--- /dev/null
+Warning: this is not actual API but desired API.
+
+# `uv_handle_t`
+
+This is the abstract base class of all types of handles. All handles have in
+common:
+
+* When handles are initialized, the reference count to the event loop is
+ increased by one.
+
+* The user owns the `uv_handle_t` memory and is in charge of freeing it.
+
+* In order to free resources associated with a handle, one must `uv_close()`
+ and wait for the `uv_close_cb` callback. After the close callback has been
+ made, the user is allowed to the `uv_handle_t` object.
+
+* The `uv_close_cb` is always made directly off the event loop. That is, it
+ is not called from `uv_close()`.
+
+
+
+# `uv_tcp_server_t`
+
+A TCP server class that is a subclass of `uv_handle_t`. This can be bound to
+an address and begin accepting new TCP sockets.
+
+ int uv_bind4(uv_tcp_server_t* tcp_server, struct sockaddr_in* address);
+ int uv_bind6(uv_tcp_server_t* tcp_server, struct sockaddr_in6* address);
+
+Binds the TCP server to an address. The `address` can be created with
+`uv_ip4_addr()`. Call this before `uv_listen()`
+
+Returns zero on success, -1 on failure. Errors in order of least-seriousness:
+
+* `UV_EADDRINUSE` There is already another socket bound to the specified
+ address.
+
+* `UV_EADDRNOTAVAIL` The `address` parameter is an IP address that is not
+
+* `UV_EINVAL` The server is already bound to an address.
+
+* `UV_EFAULT` Memory of `address` parameter is unintelligible.
+
+
+ int uv_listen(uv_tcp_server_t*, int backlog, uv_connection_cb cb);
+
+Begins listening for connections. The accept callback is level-triggered.
+
+
+ int uv_accept(uv_tcp_server_t* server,
+ uv_tcp_t* client);
+
+Accepts a connection. This should be called after the accept callback is
+made. The `client` parameter should be uninitialized memory; `uv_accept` is
+used instead of `uv_tcp_init` for server-side `uv_tcp_t` initialization.
+
+Return value 0 indicates success, -1 failure. Possible errors:
+
+* `UV_EAGAIN` There are no connections. Wait for the `uv_connection_cb` callback
+ to be called again.
+
+* `UV_EFAULT` The memory of either `server` is unintelligible.
+
+
+
+# `uv_stream_t`
+
+An abstract subclass of `uv_handle_t`. Streams represent something that
+reads and/or writes data. Streams can be half or full-duplex. TCP sockets
+are streams, files are streams with offsets.
+
+ int uv_read_start(uv_stream_t* stream,
+ uv_alloc_cb alloc_cb,
+ uv_read_cb read_cb);
+
+Starts the stream reading continuously. The `alloc_cb` is used to allow the
+user to implement various means of supplying the stream with buffers to
+fill. The `read_cb` returns buffers to the user filled with data.
+
+Sometimes the buffers returned to the user do not contain data. This does
+not indicate EOF as in other systems. EOF is made via the `uv_eof_cb` which
+can be set like this `uv_set_eof_cb(stream, eof_cb);`
+
+
+ int uv_read_stop(uv_stream_t* stream);
+
+Stops reading from the stream.
+
+ int uv_write_req_init(uv_write_req_t*,
+ uv_stream_t*,
+ uv_buf_t bufs[],
+ int butcnf);
+
+Initiates a write request on a stream.
+
+ int uv_shutdown_req_init(uv_shutdown_req_t*, uv_stream_t*)
+
+Initiates a shutdown of outgoing data once the write queue drains.
+
+
+
+# `uv_tcp_t`
+
+The TCP handle class represents one endpoint of a duplex TCP stream.
+`uv_tcp_t` is a subclass of `uv_stream_t`. A TCP handle can represent a
+client side connection (one that has been used with uv_connect_req_init`)
+or a server-side connection (one that was initialized with `uv_accept`)
+
+ int uv_connect_req_init(uv_connect_req_t* req,
+ uv_tcp_t* socket,
+ struct sockaddr* addr);
+
+Initiates a request to open a connection.
+
+
+
+# `uv_req_t`
+
+Abstract class represents an asynchronous request. This is a subclass of `uv_handle_t`.
+
+
+# `uv_connect_req_t`
+
+Subclass of `uv_req_t`. Represents a request for a TCP connection. Operates
+on `uv_tcp_t` handles. Like other types of requests the `close_cb` indicates
+completion of the request.
+
+ int uv_connect_req_init(uv_connect_req_t* req,
+ uv_tcp_t* socket,
+ struct sockaddr* addr);
+
+Initializes the connection request. Returning 0 indicates success, -1 if
+there was an error. The following values can be retrieved from
+`uv_last_error` in the case of an error:
+
+* ???
+
+
+# `uv_shutdown_req_t`
+
+Subclass of `uv_req_t`. Represents an ongoing shutdown request. Once the
+write queue of the parent `uv_stream_t` is drained, the outbound data
+channel is shutdown. Once a shutdown request is initiated on a stream, the
+stream will allow no more writes.
+
+ int uv_shutdown_req_init(uv_shutdown_req_t*,
+ uv_stream_t* parent);
+
+Initializes the shutdown request.
+
+
+# `uv_write_req_t`
+
+ int uv_write_req_init(uv_write_req_t*,
+ uv_stream_t*,
+ uv_buf_t bufs[],
+ int butcnf);
+
+Initiates a write request on a stream.
--- /dev/null
+<html>
+ <head>
+ <style>
+ body {
+ max-width: 40em;
+ margin: 2em;
+ }
+
+ a {
+ color: inherit;
+ }
+
+ a:hover {
+ color: red;
+ }
+
+ dt { margin-top: 1em; }
+ dd { margin-bottom: 1em; }
+
+ table {
+ margin: 1em 0;
+ padding: 0;
+ }
+
+ table th {
+ text-align: left;
+ padding: 0.2em;
+ white-space: nowrap;
+ }
+
+ table td {
+ padding: 0.2em;
+ text-align: left;
+ white-space: nowrap;
+ }
+
+ </style>
+ <title>Asynchronous I/O in Windows for Unix Programmers</title>
+ </head>
+ <body>
+<h1>Asynchronous I/O in Windows for Unix Programmers</h1>
+
+<p>Ryan Dahl ryan@joyent.com
+
+<p>This document assumes you are familiar with how non-blocking socket I/O
+is done in Unix.
+
+<p>The syscall
+<a href="http://msdn.microsoft.com/en-us/library/ms740141(v=VS.85).aspx"><code>select</code>
+ is available in Windows</a>
+but <code>select</code> processing is O(n) in the number of file descriptors
+unlike the modern constant-time multiplexers like epoll which makes select
+unacceptable for high-concurrency servers.
+This document will describe how high-concurrency programs are
+designed in Windows.
+
+<p>
+Instead of <a href="http://en.wikipedia.org/wiki/Epoll">epoll</a>
+or
+<a href="http://en.wikipedia.org/wiki/Kqueue">kqueue</a>,
+Windows has its own I/O multiplexer called
+<a href="http://msdn.microsoft.com/en-us/library/aa365198(VS.85).aspx">I/O completion ports</a>
+(IOCPs). IOCPs are the objects used to poll
+<a href="http://msdn.microsoft.com/en-us/library/ms686358(v=vs.85).aspx">overlapped I/O</a>
+for completion. IOCP polling is constant time (REF?).
+
+<p>
+The fundamental variation is that in a Unix you generally ask the kernel to
+wait for state change in a file descriptor's readability or writablity. With
+overlapped I/O and IOCPs the programmers waits for asynchronous function
+calls to complete.
+For example, instead of waiting for a socket to become writable and then
+using <a
+ href="http://www.kernel.org/doc/man-pages/online/pages/man2/send.2.html"><code>send(2)</code></a>
+on it, as you commonly would do in a Unix, with overlapped I/O you
+would rather <a
+ href="http://msdn.microsoft.com/en-us/library/ms742203(v=vs.85).aspx"><code>WSASend()</code></a>
+the data and then wait for it to have been sent.
+
+<p> Unix non-blocking I/O is not beautiful. A principle abstraction in Unix
+is the unified treatment of many things as files (or more precisely as file
+descriptors). <code>write(2)</code>, <code>read(2)</code>, and
+<code>close(2)</code> work with TCP sockets just as they do on regular
+files. Well—kind of. Synchronous operations work similarly on different
+types of file descriptors but once demands on performance drive you to world of
+<code>O_NONBLOCK</code> various types of file descriptors can act quite
+different for even the most basic operations. In particular,
+regular file system files do <i>not</i> support non-blocking operations.
+
+(Disturbingly no man page mentions this rather important fact.)
+
+For example, one cannot poll on a regular file FD for readability expecting
+it to indicate when it is safe to do a non-blocking read.
+
+Regular file are always readable and <code>read(2)</code> calls
+<i>always</i> have the possibility of blocking the calling thread for an
+unknown amount of time.
+
+<p>POSIX has defined <a
+ href="http://pubs.opengroup.org/onlinepubs/007908799/xsh/aio.h.html">an
+ asynchronous interface</a> for some operations but implementations for
+many Unixes have unclear status. On Linux the
+<code>aio_*</code> routines are implemented in userland in GNU libc using
+pthreads.
+<a
+ href="http://www.kernel.org/doc/man-pages/online/pages/man2/io_submit.2.html"><code>io_submit(2)</code></a>
+does not have a GNU libc wrapper and has been reported <a
+ href="http://voinici.ceata.org/~sana/blog/?p=248"> to be very slow and
+ possibly blocking</a>. <a
+ href="http://download.oracle.com/docs/cd/E19253-01/816-5171/aio-write-3rt/index.html">Solaris
+ has real kernel AIO</a> but it's unclear what its performance
+characteristics are for socket I/O as opposed to disk I/O.
+Contemporary high-performance Unix socket programs use non-blocking
+file descriptors with a I/O multiplexer—not POSIX AIO.
+Common practice for accessing the disk asynchronously is still done using custom
+userland thread pools—not POSIX AIO.
+
+<p>Windows IOCPs does support both sockets and regular file I/O which
+greatly simplifies the handling of disks. For example,
+<a href="http://msdn.microsoft.com/en-us/library/aa365468(v=VS.85).aspx"><code>ReadFileEx()</code></a>
+operates on both.
+As a first example let's look at how <code>ReadFile()</code> works.
+
+<pre>
+typedef void* HANDLE;
+
+BOOL ReadFile(HANDLE file,
+ void* buffer,
+ DWORD numberOfBytesToRead,
+ DWORD* numberOfBytesRead,
+ OVERLAPPED* overlapped);
+</pre>
+
+<p>
+The function has the possibility of executing the read synchronously
+or asynchronously. A synchronous operation is indicated by
+returning 0 and <a
+href="http://msdn.microsoft.com/en-us/library/ms741580(v=VS.85).aspx">WSAGetLastError()</code></a>
+returning <code>WSA_IO_PENDING</code>.
+When <code>ReadFile()</code> operates asynchronously the
+the user-supplied <a
+href="http://msdn.microsoft.com/en-us/library/ms741665(v=VS.85).aspx"><code>OVERLAPPED*</code></a>
+is a handle to the incomplete operation.
+
+<pre>
+typedef struct {
+ unsigned long* Internal;
+ unsigned long* InternalHigh;
+ union {
+ struct {
+ WORD Offset;
+ WORD OffsetHigh;
+ };
+ void* Pointer;
+ };
+ HANDLE hEvent;
+} OVERLAPPED;
+</pre>
+
+To poll on the completion of one of these functions,
+use an IOCP, <code>overlapped->hEvent</code>, and
+<a
+href="http://msdn.microsoft.com/en-us/library/aa364986(v=vs.85).aspx"><code>GetQueuedCompletionStatus()</code></a>.
+
+<h3>Simple TCP Connection Example</h3>
+
+<p>To demonstrate the use of <code>GetQueuedCompletionStatus()</code> an
+example of connecting to <code>localhost</code> at port 8000 is presented.
+
+<pre>
+char* buffer[200];
+WSABUF b = { buffer, 200 };
+size_t bytes_recvd;
+int r, total_events;
+OVERLAPPED overlapped;
+HANDLE port;
+
+port = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, NULL, 0);
+if (!port) {
+ goto error;
+}
+
+
+r = WSARecv(socket, &b, 1, &bytes_recvd, NULL, &overlapped, NULL);
+
+CreateIoCompletionPort(port, &overlapped.hEvent,
+
+if (r == 0) {
+ if (WSAGetLastError() == WSA_IO_PENDING) {
+ /* Asynchronous */
+ GetQueuedCompletionStatus()
+
+
+ if (r == WAIT_TIMEOUT) {
+ printf("Timeout\n");
+ } else {
+
+ }
+
+
+ } else {
+ /* Error */
+ printf("Error %d\n", WSAGetLastError());
+ }
+} else {
+ /* Synchronous */
+ printf("read %ld bytes from socket\n", bytes_recvd);
+}
+
+
+
+</pre>
+
+<h3>Previous Work</h3>
+
+<p> Writing code that can take advantage of the best worlds on across Unix operating
+systems and Windows is very difficult, requiring one to understand intricate
+APIs and undocumented details from many different operating systems. There
+are several projects which have made attempts to provide an abstraction
+layer but in the author's opinion, none are completely satisfactory.
+
+<p><b>Marc Lehmann's
+ <a href="http://software.schmorp.de/pkg/libev.html">libev</a> and
+ <a href="http://software.schmorp.de/pkg/libeio.html">libeio</a>.</b>
+ libev is the perfect minimal abstraction of the Unix I/O multiplexers. It
+ includes several helpful tools like <code>ev_async</code>, which is for
+ asynchronous notification, but the main piece is the <code>ev_io</code>,
+ which informs the user about the state of file descriptors. As mentioned
+ before, in general it is not possible to get state changes for regular
+ files—and even if it were the <code>write(2)</code> and
+ <code>read(2)</code> calls do not guarantee that they won't block.
+ Therefore libeio is provided for calling various disk-related
+ syscalls in a managed thread pool. Unfortunately the abstraction layer
+ which libev targets is not appropriate for IOCPs—libev works strictly
+ with file descriptors and does not the concept of a <i>socket</i>.
+ Furthermore users on Unix will be using libeio for file I/O which is not
+ ideal for porting to Windows. On windows libev currently uses
+ <code>select()</code>—which is limited to 64 file descriptors per
+ thread.
+
+<p><b><a href="http://monkey.org/~provos/libevent/">libevent</a>.</b>
+ Somewhat bulkier than libev with code for RPC, DNS, and HTTP included.
+ Does not support file I/O.
+ libev was
+ created after Lehmann <a
+ href="http://www.mail-archive.com/libevent-users@monkey.org/msg00753.html">evaluated
+ libevent and rejected it</a>—it's interesting to read his reasons
+ why. <a
+ href="http://google-opensource.blogspot.com/2010/01/libevent-20x-like-libevent-14x-only.html">A
+ major rewrite</a> was done for version 2 to support Windows IOCPs but <a
+ href="http://www.mail-archive.com/libevent-users@monkey.org/msg01730.html">anecdotal
+ evidence</a> suggests that it is still not working correctly.
+
+<p><b><a
+ href="http://www.boost.org/doc/libs/1_43_0/doc/html/boost_asio.html">Boost
+ ASIO</a>.</b> It basically does what you want on Windows and Unix for
+ sockets. That is, epoll on Linux, kqueue on Macintosh, IOCPs on Windows.
+ It does not support file I/O. In the author's opinion is it too large
+ for a not extremely difficult problem (~300 files, ~12000 semicolons).
+
+
+
+<h2>File Types</h2>
+<p>
+Almost every socket operation that you're familiar with has an
+overlapped counter-part. The following section tries to pair Windows
+overlapped I/O syscalls with non-blocking Unix ones.
+
+
+<h3>TCP Sockets</h3>
+
+TCP Sockets are by far the most important stream to get right.
+Servers should expect to be handling tens of thousands of these
+per thread, concurrently. This is possible with overlapped I/O in Windows if
+one is careful to avoid Unix-ism like file descriptors. (Windows has a
+hard limit of 2048 open file descriptors—see
+<a
+ href="http://msdn.microsoft.com/en-us/library/6e3b887c.aspx"><code>_setmaxstdio()</code></a>.)
+
+
+<dl>
+
+<dt><code>send(2)</code>, <code>write(2)</code></dt>
+<dd>Windows:
+<a href="http://msdn.microsoft.com/en-us/library/ms742203(v=vs.85).aspx"><code>WSASend()</code></a>,
+<a href="http://msdn.microsoft.com/en-us/library/aa365748(v=VS.85).aspx"><code>WriteFileEx()</code></a>
+</dd>
+
+
+<dt><code>recv(2)</code>, <code>read(2)</code></dt>
+<dd>
+Windows:
+<a href="http://msdn.microsoft.com/en-us/library/ms741688(v=VS.85).aspx"><code>WSARecv()</code></a>,
+<a href="http://msdn.microsoft.com/en-us/library/aa365468(v=VS.85).aspx"><code>ReadFileEx()</code></a>
+</dd>
+
+
+<dt><code>connect(2)</code></dt>
+<dd>
+Windows: <a href="http://msdn.microsoft.com/en-us/library/ms737606(VS.85).aspx"><code>ConnectEx()</code></a>
+
+<p>
+Non-blocking <code>connect()</code> is has difficult semantics in
+Unix. The proper way to connect to a remote host is this: call
+<code>connect(2)</code> while it returns
+<code>EINPROGRESS</code> poll on the file descriptor for writablity.
+Then use
+<pre>int error;
+socklen_t len = sizeof(int);
+getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len);</pre>
+A zero <code>error</code> indicates that the connection succeeded.
+(Documented in <code>connect(2)</code> under <code>EINPROGRESS</code>
+on the Linux man page.)
+</dd>
+
+
+<dt><code>accept(2)</code></dt>
+<dd>
+Windows: <a href="http://msdn.microsoft.com/en-us/library/ms737524(v=VS.85).aspx"><code>AcceptEx()</code></a>
+</dd>
+
+
+<dt><code>sendfile(2)</code></dt>
+<dd>
+Windows: <a href="http://msdn.microsoft.com/en-us/library/ms740565(v=VS.85).aspx"><code>TransmitFile()</code></a>
+
+<p> The exact API of <code>sendfile(2)</code> on Unix has not been agreed
+on yet. Each operating system does it slightly different. All
+<code>sendfile(2)</code> implementations (except possibly FreeBSD?) are blocking
+even on non-blocking sockets.
+<ul>
+<li><a href="http://www.kernel.org/doc/man-pages/online/pages/man2/sendfile.2.html">Linux <code>sendfile(2)</code></a>
+<li><a href="http://www.freebsd.org/cgi/man.cgi?query=sendfile&sektion=2">FreeBSD <code>sendfile(2)</code></a>
+<li><a href="http://www.manpagez.com/man/2/sendfile/">Darwin <code>sendfile(2)</code></a>
+</ul>
+Marc Lehmann has written <a
+ href="https://github.com/joyent/node/blob/2c185a9dfd3be8e718858b946333c433c375c295/deps/libeio/eio.c#L954-1080">a
+ portable version in libeio</a>.
+</dd>
+
+<dt><code>shutdown(2)</code>, graceful close, half-duplex connections</dt>
+<dd>
+<a
+ href="http://msdn.microsoft.com/en-us/library/ms738547(v=VS.85).aspx">Graceful
+ Shutdown, Linger Options, and Socket Closure</a>
+<br/>
+<a
+ href="http://msdn.microsoft.com/en-us/library/ms737757(VS.85).aspx"><code>DisconnectEx()</code></a>
+
+</dd>
+
+<dt><code>close(2)</code></dt>
+<dd>
+<a href="http://msdn.microsoft.com/en-us/library/ms737582(v=VS.85).aspx"><code>closesocket()</code></a>
+</dd>
+
+
+The following are nearly same in Windows overlapped and Unix
+non-blocking sockets. The only difference is that the Unix variants
+take integer file descriptors while Windows uses <code>SOCKET</code>.
+<ul>
+ <li><a href="http://msdn.microsoft.com/en-us/library/ms740496(v=VS.85).aspx"><code>sockaddr</code></a>
+ <li><a href="http://msdn.microsoft.com/en-us/library/ms737550(v=VS.85).aspx"><code>bind()</code></a>
+ <li><a href="http://msdn.microsoft.com/en-us/library/ms738543(v=VS.85).aspx"><code>getsockname()</code></a>
+</ul>
+
+<h3>Named Pipes</h3>
+
+Windows has "named pipes" which are more or less the same as <a
+ href="http://www.kernel.org/doc/man-pages/online/pages/man7/unix.7.html"><code>AF_Unix</code>
+ domain sockets</a>. <code>AF_Unix</code> sockets exist in the file system
+often looking like
+<pre>/tmp/<i>pipename</i></pre>
+
+Windows named pipes have a path, but they are not directly part of the file
+system; instead they look like
+
+<pre>\\.\pipe\<i>pipename</i></pre>
+
+
+<dl>
+<dt><code>socket(AF_Unix, SOCK_STREAM, 0), bind(2), listen(2)</code></dt>
+<dd>
+<a href="http://msdn.microsoft.com/en-us/library/aa365150(VS.85).aspx"><code>CreateNamedPipe()</code></a>
+
+<p>Use <code>FILE_FLAG_OVERLAPPED</code>, <code>PIPE_TYPE_BYTE</code>,
+<code>PIPE_NOWAIT</code>.
+</dd>
+
+
+<dt><code>send(2)</code>, <code>write(2)</code></dt>
+<dd>
+<a href="http://msdn.microsoft.com/en-us/library/aa365748(v=VS.85).aspx"><code>WriteFileEx()</code></a>
+</dd>
+
+
+<dt><code>recv(2)</code>, <code>read(2)</code></dt>
+<dd>
+<a href="http://msdn.microsoft.com/en-us/library/aa365468(v=VS.85).aspx"><code>ReadFileEx()</code></a>
+</dd>
+
+<dt><code>connect(2)</code></dt>
+<dd>
+<a href="http://msdn.microsoft.com/en-us/library/aa365150(VS.85).aspx"><code>CreateNamedPipe()</code></a>
+</dd>
+
+
+<dt><code>accept(2)</code></dt>
+<dd>
+<a href="http://msdn.microsoft.com/en-us/library/aa365146(v=VS.85).aspx"><code>ConnectNamedPipe()</code></a>
+</dd>
+
+
+</dl>
+
+Examples:
+<ul>
+<li><a
+ href="http://msdn.microsoft.com/en-us/library/aa365601(v=VS.85).aspx">Named
+ Pipe Server Using Completion Routines</a>
+<li><a
+ href="http://msdn.microsoft.com/en-us/library/aa365603(v=VS.85).aspx">Named
+ Pipe Server Using Overlapped I/O</a>
+</ul>
+
+
+<h3>Regular Files</h3>
+
+<p>
+In Unix file system files are not able to use non-blocking I/O. There are
+some operating systems that have asynchronous I/O but it is not standard and
+at least on Linux is done with pthreads in GNU libc. For this reason
+applications designed to be portable across different Unixes must manage a
+thread pool for issuing file I/O syscalls.
+
+<p>
+The situation is better in Windows: true overlapped I/O is available when
+reading or writing a stream of data to a file.
+
+<dl>
+
+<dt><code>write(2)</code></dt>
+<dd> Windows:
+<a href="http://msdn.microsoft.com/en-us/library/aa365748(v=VS.85).aspx"><code>WriteFileEx()</code></a>
+
+<p>Solaris's event completion ports has true in-kernel async writes with <a
+ href="http://download.oracle.com/docs/cd/E19253-01/816-5171/aio-write-3rt/index.html">aio_write(3RT)</a>
+</dd>
+
+<dt><code>read(2)</code></dt>
+<dd> Windows:
+<a href="http://msdn.microsoft.com/en-us/library/aa365468(v=VS.85).aspx"><code>ReadFileEx()</code></a>
+
+<p>Solaris's event completion ports has true in-kernel async reads with <a
+ href="http://download.oracle.com/docs/cd/E19253-01/816-5171/aio-read-3rt/index.html">aio_read(3RT)</a>
+</dd>
+
+</dl>
+
+<h3>Console/TTY</h3>
+
+<p>It is (usually?) possible to poll a Unix TTY file descriptor for
+readability or writablity just like a TCP socket—this is very helpful
+and nice. In Windows the situation is worse, not only is it a completely
+different API but there are not overlapped versions to read and write to the
+TTY. Polling for readability can be accomplished by waiting in another
+thread with <a
+ href="http://msdn.microsoft.com/en-us/library/ms685061(VS.85).aspx"><code>RegisterWaitForSingleObject()</code></a>.
+
+<dl>
+
+<dt><code>read(2)</code></dt>
+<dd>
+<a
+href="http://msdn.microsoft.com/en-us/library/ms684958(v=VS.85).aspx"><code>ReadConsole()</code></a>
+and
+<a
+href="http://msdn.microsoft.com/en-us/library/ms684961(v=VS.85).aspx"><code>ReadConsoleInput()</code></a>
+do not support overlapped I/O and there are no overlapped
+counter-parts. One strategy to get around this is
+<pre><a href="http://msdn.microsoft.com/en-us/library/ms685061(VS.85).aspx">RegisterWaitForSingleObject</a>(&tty_wait_handle, tty_handle,
+ tty_want_poll, NULL, INFINITE, WT_EXECUTEINWAITTHREAD |
+ WT_EXECUTEONLYONCE)</pre>
+which will execute <code>tty_want_poll()</code> in a different thread.
+You can use this to notify the calling thread that
+<code>ReadConsoleInput()</code> will not block.
+</dd>
+
+
+<dt><code>write(2)</code></dt>
+<dd>
+<a href="http://msdn.microsoft.com/en-us/library/ms687401(v=VS.85).aspx"><code>WriteConsole()</code></a>
+is also blocking but this is probably acceptable.
+</dd>
+
+
+<dt><a
+ href="http://www.kernel.org/doc/man-pages/online/pages/man3/tcsetattr.3.html"><code>tcsetattr(3)</code></a></dt>
+<dd>
+<a href="http://msdn.microsoft.com/en-us/library/ms686033(VS.85).aspx"><code>SetConsoleMode()</code></a>
+</dd>
+
+
+</dl>
+
+
+
+<h2>Assorted Links</h2>
+<p>
+tips
+<ul>
+<li> overlapped = non-blocking.
+<li> There is no overlapped <a href="http://msdn.microsoft.com/en-us/library/ms738518(VS.85).aspx"><code>GetAddrInfoEx()</code></a> function. It seems Asynchronous Procedure Calls must be used instead.
+<li> <a href=http://msdn.microsoft.com/en-us/library/ms740673(VS.85).aspx"><code>Windows Sockets 2</code></a>
+</ul>
+
+<p>
+IOCP:
+<ul>
+<li><a href="http://msdn.microsoft.com/en-us/library/ms686358(v=vs.85).aspx">Synchronization and Overlapped Input and Output</a>
+<li><a href="http://msdn.microsoft.com/en-us/library/ms741665(v=VS.85).aspx"><code>OVERLAPPED</code> Structure</a>
+ <ul>
+ <li><a href="http://msdn.microsoft.com/en-us/library/ms683209(v=VS.85).aspx"><code>GetOverlappedResult()</code></a>
+ <li><a href="http://msdn.microsoft.com/en-us/library/ms683244(v=VS.85).aspx"><code>HasOverlappedIoCompleted()</code></a>
+ <li><a href="http://msdn.microsoft.com/en-us/library/aa363792(v=vs.85).aspx"><code>CancelIoEx()</code></a>
+ — cancels an overlapped operation.
+ </ul>
+<li><a href="http://msdn.microsoft.com/en-us/library/ms742203(v=vs.85).aspx"><code>WSASend()</code></a>
+<li><a href="http://msdn.microsoft.com/en-us/library/ms741688(v=VS.85).aspx"><code>WSARecv()</code></a>
+<li><a href="http://msdn.microsoft.com/en-us/library/ms737606(VS.85).aspx"><code>ConnectEx()</code></a>
+<li><a href="http://msdn.microsoft.com/en-us/library/ms740565(v=VS.85).aspx"><code>TransmitFile()</code></a>
+— an async <code>sendfile()</code> for windows.
+<li><a href="http://msdn.microsoft.com/en-us/library/ms741565(v=VS.85).aspx"><code>WSADuplicateSocket()</code></a>
+— describes how to share a socket between two processes.
+<li id="setmaxstdio"><a href="http://msdn.microsoft.com/en-us/library/6e3b887c.aspx"><code>_setmaxstdio()</code></a>
+— something like setting the maximum number of file decriptors
+and <a
+ href="http://www.kernel.org/doc/man-pages/online/pages/man2/setrlimit.2.html"><code>setrlimit(3)</code></a>
+AKA <code>ulimit -n</code>. Note the file descriptor limit on windows is
+2048.
+</ul>
+
+<p>
+APC:
+<ul>
+<li><a href="http://msdn.microsoft.com/en-us/library/ms681951(v=vs.85).aspx">Asynchronous Procedure Calls</a>
+<li><a href="http://msdn.microsoft.com/en-us/library/ms682016"><code>DNSQuery()</code></a>
+— General purpose DNS query function like <code>res_query()</code> on Unix.
+</ul>
+
+
+Pipes:
+<ul>
+<li><a href="http://msdn.microsoft.com/en-us/library/aa365781(v=VS.85).aspx"><code>Pipe functions</code></a>
+<li><a href="http://msdn.microsoft.com/en-us/library/aa365150(VS.85).aspx"><code>CreateNamedPipe</code></a>
+<li><a href="http://msdn.microsoft.com/en-us/library/aa365144(v=VS.85).aspx"><code>CallNamedPipe</code></a>
+— like <code>accept</code> is for Unix pipes.
+<li><a href="http://msdn.microsoft.com/en-us/library/aa365146(v=VS.85).aspx"><code>ConnectNamedPipe</code></a>
+</ul>
+
+<code>WaitForMultipleObjectsEx</code> is pronounced "wait for multiple object sex".
+
+Also useful:
+<a
+ href="http://msdn.microsoft.com/en-us/library/xw1ew2f8(v=vs.80).aspx">Introduction
+ to Visual C++ for Unix Users</a>
+
+<br><br>
+<a
+ href="http://ebookbrowse.com/network-programming-for-microsoft-windows-2nd-edition-2002-pdf-d73663829">Network
+ Programming For Microsoft Windows 2nd Edition 2002</a>. Juicy details on
+page 119.
+
+</body></html>
--- /dev/null
+
+/* Copyright 1998, 2009 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2007-2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#ifndef ARES__H
+#define ARES__H
+
+#include "ares_version.h" /* c-ares version defines */
+
+/*
+ * Define WIN32 when build target is Win32 API
+ */
+
+#if (defined(_WIN32) || defined(__WIN32__)) && \
+ !defined(WIN32) && !defined(__SYMBIAN32__)
+# define WIN32
+#endif
+
+/*************************** libuv patch ***************/
+
+/*
+ * We want to avoid autoconf altogether since there are a finite number of
+ * operating systems and simply build c-ares. Therefore we do not want the
+ * configurations provided by ares_build.h since we are always statically
+ * linking c-ares into libuv. Having a system dependent ares_build.h forces
+ * all users of ares.h to include the correct ares_build.h. We do not care
+ * about the linking checks provided by ares_rules.h. This would complicate
+ * the libuv build process.
+ */
+
+
+#if defined(WIN32)
+/* Configure process defines this to 1 when it finds out that system */
+/* header file ws2tcpip.h must be included by the external interface. */
+/* #undef CARES_PULL_WS2TCPIP_H */
+# include <winsock2.h>
+# include <ws2tcpip.h>
+# include <windows.h>
+
+#else /* Not Windows */
+
+# include <sys/types.h>
+# include <sys/socket.h>
+#endif
+
+#if 0
+/* The size of `long', as computed by sizeof. */
+#define CARES_SIZEOF_LONG 4
+#endif
+
+/* Integral data type used for ares_socklen_t. */
+#define CARES_TYPEOF_ARES_SOCKLEN_T socklen_t
+
+#if 0
+/* The size of `ares_socklen_t', as computed by sizeof. */
+#define CARES_SIZEOF_ARES_SOCKLEN_T 4
+#endif
+
+/* Data type definition of ares_socklen_t. */
+typedef int ares_socklen_t;
+
+#if 0 /* libuv disabled */
+#include "ares_rules.h" /* c-ares rules enforcement */
+#endif
+
+/*********************** end libuv patch ***************/
+
+#include <sys/types.h>
+
+/* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish
+ libc5-based Linux systems. Only include it on system that are known to
+ require it! */
+#if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \
+ defined(__minix) || defined(__SYMBIAN32__) || defined(__INTEGRITY)
+#include <sys/select.h>
+#endif
+#if (defined(NETWARE) && !defined(__NOVELL_LIBC__))
+#include <sys/bsdskt.h>
+#endif
+
+#if defined(WATT32)
+# include <netinet/in.h>
+# include <sys/socket.h>
+# include <tcp.h>
+#elif defined(WIN32)
+# include <winsock2.h>
+# include <ws2tcpip.h>
+# include <windows.h>
+#else
+# include <sys/socket.h>
+# include <netinet/in.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+** c-ares external API function linkage decorations.
+*/
+
+#if !defined(CARES_STATICLIB) && \
+ (defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__))
+ /* __declspec function decoration for Win32 and Symbian DLL's */
+# if defined(CARES_BUILDING_LIBRARY)
+# define CARES_EXTERN __declspec(dllexport)
+# else
+# define CARES_EXTERN __declspec(dllimport)
+# endif
+#else
+ /* visibility function decoration for other cases */
+# if !defined(CARES_SYMBOL_HIDING) || \
+ defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__)
+# define CARES_EXTERN
+# else
+# define CARES_EXTERN CARES_SYMBOL_SCOPE_EXTERN
+# endif
+#endif
+
+
+#define ARES_SUCCESS 0
+
+/* Server error codes (ARES_ENODATA indicates no relevant answer) */
+#define ARES_ENODATA 1
+#define ARES_EFORMERR 2
+#define ARES_ESERVFAIL 3
+#define ARES_ENOTFOUND 4
+#define ARES_ENOTIMP 5
+#define ARES_EREFUSED 6
+
+/* Locally generated error codes */
+#define ARES_EBADQUERY 7
+#define ARES_EBADNAME 8
+#define ARES_EBADFAMILY 9
+#define ARES_EBADRESP 10
+#define ARES_ECONNREFUSED 11
+#define ARES_ETIMEOUT 12
+#define ARES_EOF 13
+#define ARES_EFILE 14
+#define ARES_ENOMEM 15
+#define ARES_EDESTRUCTION 16
+#define ARES_EBADSTR 17
+
+/* ares_getnameinfo error codes */
+#define ARES_EBADFLAGS 18
+
+/* ares_getaddrinfo error codes */
+#define ARES_ENONAME 19
+#define ARES_EBADHINTS 20
+
+/* Uninitialized library error code */
+#define ARES_ENOTINITIALIZED 21 /* introduced in 1.7.0 */
+
+/* ares_library_init error codes */
+#define ARES_ELOADIPHLPAPI 22 /* introduced in 1.7.0 */
+#define ARES_EADDRGETNETWORKPARAMS 23 /* introduced in 1.7.0 */
+
+/* More error codes */
+#define ARES_ECANCELLED 24 /* introduced in 1.7.0 */
+
+/* Flag values */
+#define ARES_FLAG_USEVC (1 << 0)
+#define ARES_FLAG_PRIMARY (1 << 1)
+#define ARES_FLAG_IGNTC (1 << 2)
+#define ARES_FLAG_NORECURSE (1 << 3)
+#define ARES_FLAG_STAYOPEN (1 << 4)
+#define ARES_FLAG_NOSEARCH (1 << 5)
+#define ARES_FLAG_NOALIASES (1 << 6)
+#define ARES_FLAG_NOCHECKRESP (1 << 7)
+
+/* Option mask values */
+#define ARES_OPT_FLAGS (1 << 0)
+#define ARES_OPT_TIMEOUT (1 << 1)
+#define ARES_OPT_TRIES (1 << 2)
+#define ARES_OPT_NDOTS (1 << 3)
+#define ARES_OPT_UDP_PORT (1 << 4)
+#define ARES_OPT_TCP_PORT (1 << 5)
+#define ARES_OPT_SERVERS (1 << 6)
+#define ARES_OPT_DOMAINS (1 << 7)
+#define ARES_OPT_LOOKUPS (1 << 8)
+#define ARES_OPT_SOCK_STATE_CB (1 << 9)
+#define ARES_OPT_SORTLIST (1 << 10)
+#define ARES_OPT_SOCK_SNDBUF (1 << 11)
+#define ARES_OPT_SOCK_RCVBUF (1 << 12)
+#define ARES_OPT_TIMEOUTMS (1 << 13)
+#define ARES_OPT_ROTATE (1 << 14)
+
+/* Nameinfo flag values */
+#define ARES_NI_NOFQDN (1 << 0)
+#define ARES_NI_NUMERICHOST (1 << 1)
+#define ARES_NI_NAMEREQD (1 << 2)
+#define ARES_NI_NUMERICSERV (1 << 3)
+#define ARES_NI_DGRAM (1 << 4)
+#define ARES_NI_TCP 0
+#define ARES_NI_UDP ARES_NI_DGRAM
+#define ARES_NI_SCTP (1 << 5)
+#define ARES_NI_DCCP (1 << 6)
+#define ARES_NI_NUMERICSCOPE (1 << 7)
+#define ARES_NI_LOOKUPHOST (1 << 8)
+#define ARES_NI_LOOKUPSERVICE (1 << 9)
+/* Reserved for future use */
+#define ARES_NI_IDN (1 << 10)
+#define ARES_NI_IDN_ALLOW_UNASSIGNED (1 << 11)
+#define ARES_NI_IDN_USE_STD3_ASCII_RULES (1 << 12)
+
+/* Addrinfo flag values */
+#define ARES_AI_CANONNAME (1 << 0)
+#define ARES_AI_NUMERICHOST (1 << 1)
+#define ARES_AI_PASSIVE (1 << 2)
+#define ARES_AI_NUMERICSERV (1 << 3)
+#define ARES_AI_V4MAPPED (1 << 4)
+#define ARES_AI_ALL (1 << 5)
+#define ARES_AI_ADDRCONFIG (1 << 6)
+/* Reserved for future use */
+#define ARES_AI_IDN (1 << 10)
+#define ARES_AI_IDN_ALLOW_UNASSIGNED (1 << 11)
+#define ARES_AI_IDN_USE_STD3_ASCII_RULES (1 << 12)
+#define ARES_AI_CANONIDN (1 << 13)
+
+#define ARES_AI_MASK (ARES_AI_CANONNAME|ARES_AI_NUMERICHOST|ARES_AI_PASSIVE| \
+ ARES_AI_NUMERICSERV|ARES_AI_V4MAPPED|ARES_AI_ALL| \
+ ARES_AI_ADDRCONFIG)
+#define ARES_GETSOCK_MAXNUM 16 /* ares_getsock() can return info about this
+ many sockets */
+#define ARES_GETSOCK_READABLE(bits,num) (bits & (1<< (num)))
+#define ARES_GETSOCK_WRITABLE(bits,num) (bits & (1 << ((num) + \
+ ARES_GETSOCK_MAXNUM)))
+
+/* c-ares library initialization flag values */
+#define ARES_LIB_INIT_NONE (0)
+#define ARES_LIB_INIT_WIN32 (1 << 0)
+#define ARES_LIB_INIT_ALL (ARES_LIB_INIT_WIN32)
+
+
+/*
+ * Typedef our socket type
+ */
+
+#ifndef ares_socket_typedef
+#ifdef WIN32
+typedef SOCKET ares_socket_t;
+#define ARES_SOCKET_BAD INVALID_SOCKET
+#else
+typedef int ares_socket_t;
+#define ARES_SOCKET_BAD -1
+#endif
+#define ares_socket_typedef
+#endif /* ares_socket_typedef */
+
+typedef void (*ares_sock_state_cb)(void *data,
+ ares_socket_t socket_fd,
+ int readable,
+ int writable);
+
+struct apattern;
+
+/* NOTE about the ares_options struct to users and developers.
+
+ This struct will remain looking like this. It will not be extended nor
+ shrunk in future releases, but all new options will be set by ares_set_*()
+ options instead of with the ares_init_options() function.
+
+ Eventually (in a galaxy far far away), all options will be settable by
+ ares_set_*() options and the ares_init_options() function will become
+ deprecated.
+
+ When new options are added to c-ares, they are not added to this
+ struct. And they are not "saved" with the ares_save_options() function but
+ instead we encourage the use of the ares_dup() function. Needless to say,
+ if you add config options to c-ares you need to make sure ares_dup()
+ duplicates this new option.
+
+ */
+struct ares_options {
+ int flags;
+ int timeout; /* in seconds or milliseconds, depending on options */
+ int tries;
+ int ndots;
+ unsigned short udp_port;
+ unsigned short tcp_port;
+ int socket_send_buffer_size;
+ int socket_receive_buffer_size;
+ struct in_addr *servers;
+ int nservers;
+ char **domains;
+ int ndomains;
+ char *lookups;
+ ares_sock_state_cb sock_state_cb;
+ void *sock_state_cb_data;
+ struct apattern *sortlist;
+ int nsort;
+};
+
+struct hostent;
+struct timeval;
+struct sockaddr;
+struct ares_channeldata;
+
+typedef struct ares_channeldata *ares_channel;
+
+typedef void (*ares_callback)(void *arg,
+ int status,
+ int timeouts,
+ unsigned char *abuf,
+ int alen);
+
+typedef void (*ares_host_callback)(void *arg,
+ int status,
+ int timeouts,
+ struct hostent *hostent);
+
+typedef void (*ares_nameinfo_callback)(void *arg,
+ int status,
+ int timeouts,
+ char *node,
+ char *service);
+
+typedef int (*ares_sock_create_callback)(ares_socket_t socket_fd,
+ int type,
+ void *data);
+
+CARES_EXTERN int ares_library_init(int flags);
+
+CARES_EXTERN void ares_library_cleanup(void);
+
+CARES_EXTERN const char *ares_version(int *version);
+
+CARES_EXTERN int ares_init(ares_channel *channelptr);
+
+CARES_EXTERN int ares_init_options(ares_channel *channelptr,
+ struct ares_options *options,
+ int optmask);
+
+CARES_EXTERN int ares_save_options(ares_channel channel,
+ struct ares_options *options,
+ int *optmask);
+
+CARES_EXTERN void ares_destroy_options(struct ares_options *options);
+
+CARES_EXTERN int ares_dup(ares_channel *dest,
+ ares_channel src);
+
+CARES_EXTERN void ares_destroy(ares_channel channel);
+
+CARES_EXTERN void ares_cancel(ares_channel channel);
+
+/* These next 3 configure local binding for the out-going socket
+ * connection. Use these to specify source IP and/or network device
+ * on multi-homed systems.
+ */
+CARES_EXTERN void ares_set_local_ip4(ares_channel channel, unsigned int local_ip);
+
+/* local_ip6 should be 16 bytes in length */
+CARES_EXTERN void ares_set_local_ip6(ares_channel channel,
+ const unsigned char* local_ip6);
+
+/* local_dev_name should be null terminated. */
+CARES_EXTERN void ares_set_local_dev(ares_channel channel,
+ const char* local_dev_name);
+
+CARES_EXTERN void ares_set_socket_callback(ares_channel channel,
+ ares_sock_create_callback callback,
+ void *user_data);
+
+CARES_EXTERN void ares_send(ares_channel channel,
+ const unsigned char *qbuf,
+ int qlen,
+ ares_callback callback,
+ void *arg);
+
+CARES_EXTERN void ares_query(ares_channel channel,
+ const char *name,
+ int dnsclass,
+ int type,
+ ares_callback callback,
+ void *arg);
+
+CARES_EXTERN void ares_search(ares_channel channel,
+ const char *name,
+ int dnsclass,
+ int type,
+ ares_callback callback,
+ void *arg);
+
+CARES_EXTERN void ares_gethostbyname(ares_channel channel,
+ const char *name,
+ int family,
+ ares_host_callback callback,
+ void *arg);
+
+CARES_EXTERN int ares_gethostbyname_file(ares_channel channel,
+ const char *name,
+ int family,
+ struct hostent **host);
+
+CARES_EXTERN void ares_gethostbyaddr(ares_channel channel,
+ const void *addr,
+ int addrlen,
+ int family,
+ ares_host_callback callback,
+ void *arg);
+
+CARES_EXTERN void ares_getnameinfo(ares_channel channel,
+ const struct sockaddr *sa,
+ ares_socklen_t salen,
+ int flags,
+ ares_nameinfo_callback callback,
+ void *arg);
+
+CARES_EXTERN int ares_fds(ares_channel channel,
+ fd_set *read_fds,
+ fd_set *write_fds);
+
+CARES_EXTERN int ares_getsock(ares_channel channel,
+ ares_socket_t *socks,
+ int numsocks);
+
+CARES_EXTERN struct timeval *ares_timeout(ares_channel channel,
+ struct timeval *maxtv,
+ struct timeval *tv);
+
+CARES_EXTERN void ares_process(ares_channel channel,
+ fd_set *read_fds,
+ fd_set *write_fds);
+
+CARES_EXTERN void ares_process_fd(ares_channel channel,
+ ares_socket_t read_fd,
+ ares_socket_t write_fd);
+
+CARES_EXTERN int ares_mkquery(const char *name,
+ int dnsclass,
+ int type,
+ unsigned short id,
+ int rd,
+ unsigned char **buf,
+ int *buflen);
+
+CARES_EXTERN int ares_expand_name(const unsigned char *encoded,
+ const unsigned char *abuf,
+ int alen,
+ char **s,
+ long *enclen);
+
+CARES_EXTERN int ares_expand_string(const unsigned char *encoded,
+ const unsigned char *abuf,
+ int alen,
+ unsigned char **s,
+ long *enclen);
+
+/*
+ * NOTE: before c-ares 1.7.0 we would most often use the system in6_addr
+ * struct below when ares itself was built, but many apps would use this
+ * private version since the header checked a HAVE_* define for it. Starting
+ * with 1.7.0 we always declare and use our own to stop relying on the
+ * system's one.
+ */
+struct ares_in6_addr {
+ union {
+ unsigned char _S6_u8[16];
+ } _S6_un;
+};
+
+struct ares_addrttl {
+ struct in_addr ipaddr;
+ int ttl;
+};
+
+struct ares_addr6ttl {
+ struct ares_in6_addr ip6addr;
+ int ttl;
+};
+
+struct ares_srv_reply {
+ struct ares_srv_reply *next;
+ char *host;
+ unsigned short priority;
+ unsigned short weight;
+ unsigned short port;
+};
+
+struct ares_mx_reply {
+ struct ares_mx_reply *next;
+ char *host;
+ unsigned short priority;
+};
+
+struct ares_txt_reply {
+ struct ares_txt_reply *next;
+ unsigned char *txt;
+ size_t length; /* length excludes null termination */
+};
+
+/*
+** Parse the buffer, starting at *abuf and of length alen bytes, previously
+** obtained from an ares_search call. Put the results in *host, if nonnull.
+** Also, if addrttls is nonnull, put up to *naddrttls IPv4 addresses along with
+** their TTLs in that array, and set *naddrttls to the number of addresses
+** so written.
+*/
+
+CARES_EXTERN int ares_parse_a_reply(const unsigned char *abuf,
+ int alen,
+ struct hostent **host,
+ struct ares_addrttl *addrttls,
+ int *naddrttls);
+
+CARES_EXTERN int ares_parse_aaaa_reply(const unsigned char *abuf,
+ int alen,
+ struct hostent **host,
+ struct ares_addr6ttl *addrttls,
+ int *naddrttls);
+
+CARES_EXTERN int ares_parse_ptr_reply(const unsigned char *abuf,
+ int alen,
+ const void *addr,
+ int addrlen,
+ int family,
+ struct hostent **host);
+
+CARES_EXTERN int ares_parse_ns_reply(const unsigned char *abuf,
+ int alen,
+ struct hostent **host);
+
+CARES_EXTERN int ares_parse_srv_reply(const unsigned char* abuf,
+ int alen,
+ struct ares_srv_reply** srv_out);
+
+CARES_EXTERN int ares_parse_mx_reply(const unsigned char* abuf,
+ int alen,
+ struct ares_mx_reply** mx_out);
+
+CARES_EXTERN int ares_parse_txt_reply(const unsigned char* abuf,
+ int alen,
+ struct ares_txt_reply** txt_out);
+
+CARES_EXTERN void ares_free_string(void *str);
+
+CARES_EXTERN void ares_free_hostent(struct hostent *host);
+
+CARES_EXTERN void ares_free_data(void *dataptr);
+
+CARES_EXTERN const char *ares_strerror(int code);
+
+/* TODO: Hold port here as well. */
+struct ares_addr_node {
+ struct ares_addr_node *next;
+ int family;
+ union {
+ struct in_addr addr4;
+ struct ares_in6_addr addr6;
+ } addr;
+};
+
+CARES_EXTERN int ares_set_servers(ares_channel channel,
+ struct ares_addr_node *servers);
+
+/* Incomming string format: host[:port][,host[:port]]... */
+CARES_EXTERN int ares_set_servers_csv(ares_channel channel,
+ const char* servers);
+
+CARES_EXTERN int ares_get_servers(ares_channel channel,
+ struct ares_addr_node **servers);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ARES__H */
--- /dev/null
+
+#ifndef ARES__VERSION_H
+#define ARES__VERSION_H
+
+/* This is the global package copyright */
+#define ARES_COPYRIGHT "2004 - 2010 Daniel Stenberg, <daniel@haxx.se>."
+
+#define ARES_VERSION_MAJOR 1
+#define ARES_VERSION_MINOR 7
+#define ARES_VERSION_PATCH 4
+#define ARES_VERSION ((ARES_VERSION_MAJOR<<16)|\
+ (ARES_VERSION_MINOR<<8)|\
+ (ARES_VERSION_PATCH))
+#define ARES_VERSION_STR "1.7.4"
+
+#if (ARES_VERSION >= 0x010700)
+# define CARES_HAVE_ARES_LIBRARY_INIT 1
+# define CARES_HAVE_ARES_LIBRARY_CLEANUP 1
+#else
+# undef CARES_HAVE_ARES_LIBRARY_INIT
+# undef CARES_HAVE_ARES_LIBRARY_CLEANUP
+#endif
+
+#endif
--- /dev/null
+/*
+ * libeio API header
+ *
+ * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libeio@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#ifndef EIO_H_
+#define EIO_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+#include <sys/types.h>
+
+#ifdef __OpenBSD__
+# include <inttypes.h>
+#endif
+
+#ifdef _WIN32
+# define uid_t int
+# define gid_t int
+#endif
+
+typedef struct eio_req eio_req;
+typedef struct eio_dirent eio_dirent;
+
+typedef int (*eio_cb)(eio_req *req);
+
+#ifndef EIO_REQ_MEMBERS
+# define EIO_REQ_MEMBERS
+#endif
+
+#ifndef EIO_STRUCT_STAT
+# ifdef _WIN32
+# define EIO_STRUCT_STAT struct _stati64
+# else
+# define EIO_STRUCT_STAT struct stat
+# endif
+#endif
+
+#ifndef EIO_STRUCT_STATVFS
+# define EIO_STRUCT_STATVFS struct statvfs
+#endif
+
+/* for readdir */
+
+/* eio_readdir flags */
+enum
+{
+ EIO_READDIR_DENTS = 0x01, /* ptr2 contains eio_dirents, not just the (unsorted) names */
+ EIO_READDIR_DIRS_FIRST = 0x02, /* dirents gets sorted into a good stat() ing order to find directories first */
+ EIO_READDIR_STAT_ORDER = 0x04, /* dirents gets sorted into a good stat() ing order to quickly stat all files */
+ EIO_READDIR_FOUND_UNKNOWN = 0x80, /* set by eio_readdir when *_ARRAY was set and any TYPE=UNKNOWN's were found */
+
+ EIO_READDIR_CUSTOM1 = 0x100, /* for use by apps */
+ EIO_READDIR_CUSTOM2 = 0x200 /* for use by apps */
+};
+
+/* using "typical" values in the hope that the compiler will do something sensible */
+enum eio_dtype
+{
+ EIO_DT_UNKNOWN = 0,
+ EIO_DT_FIFO = 1,
+ EIO_DT_CHR = 2,
+ EIO_DT_MPC = 3, /* multiplexed char device (v7+coherent) */
+ EIO_DT_DIR = 4,
+ EIO_DT_NAM = 5, /* xenix special named file */
+ EIO_DT_BLK = 6,
+ EIO_DT_MPB = 7, /* multiplexed block device (v7+coherent) */
+ EIO_DT_REG = 8,
+ EIO_DT_NWK = 9, /* HP-UX network special */
+ EIO_DT_CMP = 9, /* VxFS compressed */
+ EIO_DT_LNK = 10,
+ /* DT_SHAD = 11,*/
+ EIO_DT_SOCK = 12,
+ EIO_DT_DOOR = 13, /* solaris door */
+ EIO_DT_WHT = 14,
+ EIO_DT_MAX = 15 /* highest DT_VALUE ever, hopefully */
+};
+
+struct eio_dirent
+{
+ int nameofs; /* offset of null-terminated name string in (char *)req->ptr2 */
+ unsigned short namelen; /* size of filename without trailing 0 */
+ unsigned char type; /* one of EIO_DT_* */
+ signed char score; /* internal use */
+ ino_t inode; /* the inode number, if available, otherwise unspecified */
+};
+
+/* eio_msync flags */
+enum
+{
+ EIO_MS_ASYNC = 1,
+ EIO_MS_INVALIDATE = 2,
+ EIO_MS_SYNC = 4
+};
+
+/* eio_mtouch flags */
+
+enum
+{
+ EIO_MT_MODIFY = 1
+};
+
+/* eio_sync_file_range flags */
+
+enum
+{
+ EIO_SYNC_FILE_RANGE_WAIT_BEFORE = 1,
+ EIO_SYNC_FILE_RANGE_WRITE = 2,
+ EIO_SYNC_FILE_RANGE_WAIT_AFTER = 4
+};
+
+typedef double eio_tstamp; /* feel free to use double in your code directly */
+
+/* the eio request structure */
+
+enum
+{
+ EIO_CUSTOM,
+ EIO_OPEN, EIO_CLOSE, EIO_DUP2,
+ EIO_READ, EIO_WRITE,
+ EIO_READAHEAD, EIO_SENDFILE,
+ EIO_STAT, EIO_LSTAT, EIO_FSTAT,
+ EIO_STATVFS, EIO_FSTATVFS,
+ EIO_TRUNCATE, EIO_FTRUNCATE,
+ EIO_UTIME, EIO_FUTIME,
+ EIO_CHMOD, EIO_FCHMOD,
+ EIO_CHOWN, EIO_FCHOWN,
+ EIO_SYNC, EIO_FSYNC, EIO_FDATASYNC,
+ EIO_MSYNC, EIO_MTOUCH, EIO_SYNC_FILE_RANGE,
+ EIO_MLOCK, EIO_MLOCKALL,
+ EIO_UNLINK, EIO_RMDIR, EIO_MKDIR, EIO_RENAME,
+ EIO_MKNOD, EIO_READDIR,
+ EIO_LINK, EIO_SYMLINK, EIO_READLINK,
+ EIO_GROUP, EIO_NOP,
+ EIO_BUSY
+};
+
+/* mlockall constants */
+enum
+{
+ EIO_MCL_CURRENT = 1,
+ EIO_MCL_FUTURE = 2,
+};
+
+/* request priorities */
+
+enum {
+ EIO_PRI_MIN = -4,
+ EIO_PRI_MAX = 4,
+ EIO_PRI_DEFAULT = 0,
+};
+
+/* eio request structure */
+/* this structure is mostly read-only */
+/* when initialising it, all members must be zero-initialised */
+struct eio_req
+{
+ eio_req volatile *next; /* private ETP */
+
+ ssize_t result; /* result of syscall, e.g. result = read (... */
+ off_t offs; /* read, write, truncate, readahead, sync_file_range: file offset */
+ size_t size; /* read, write, readahead, sendfile, msync, mlock, sync_file_range: length */
+ void *ptr1; /* all applicable requests: pathname, old name; readdir: optional eio_dirents */
+ void *ptr2; /* all applicable requests: new name or memory buffer; readdir: name strings */
+ eio_tstamp nv1; /* utime, futime: atime; busy: sleep time */
+ eio_tstamp nv2; /* utime, futime: mtime */
+
+ int type; /* EIO_xxx constant ETP */
+ int int1; /* all applicable requests: file descriptor; sendfile: output fd; open, msync, mlockall, readdir: flags */
+ long int2; /* chown, fchown: uid; sendfile: input fd; open, chmod, mkdir, mknod: file mode, sync_file_range: flags */
+ long int3; /* chown, fchown: gid; mknod: dev_t */
+ int errorno; /* errno value on syscall return */
+
+ unsigned char flags; /* private */
+ signed char pri; /* the priority */
+
+ void *data;
+ eio_cb finish;
+ void (*destroy)(eio_req *req); /* called when requets no longer needed */
+ void (*feed)(eio_req *req); /* only used for group requests */
+
+ EIO_REQ_MEMBERS
+
+ eio_req *grp, *grp_prev, *grp_next, *grp_first; /* private */
+};
+
+/* _private_ request flags */
+enum {
+ EIO_FLAG_CANCELLED = 0x01, /* request was cancelled */
+ EIO_FLAG_PTR1_FREE = 0x02, /* need to free(ptr1) */
+ EIO_FLAG_PTR2_FREE = 0x04, /* need to free(ptr2) */
+ EIO_FLAG_GROUPADD = 0x08 /* some request was added to the group */
+};
+
+/* undocumented/unsupported/private helper */
+/*void eio_page_align (void **addr, size_t *length);*/
+
+/* returns < 0 on error, errno set
+ * need_poll, if non-zero, will be called when results are available
+ * and eio_poll_cb needs to be invoked (it MUST NOT call eio_poll_cb itself).
+ * done_poll is called when the need to poll is gone.
+ */
+int eio_init (void (*want_poll)(void), void (*done_poll)(void));
+
+/* must be called regularly to handle pending requests */
+/* returns 0 if all requests were handled, -1 if not, or the value of EIO_FINISH if != 0 */
+int eio_poll (void);
+
+/* stop polling if poll took longer than duration seconds */
+void eio_set_max_poll_time (eio_tstamp nseconds);
+/* do not handle more then count requests in one call to eio_poll_cb */
+void eio_set_max_poll_reqs (unsigned int nreqs);
+
+/* set minimum required number
+ * maximum wanted number
+ * or maximum idle number of threads */
+void eio_set_min_parallel (unsigned int nthreads);
+void eio_set_max_parallel (unsigned int nthreads);
+void eio_set_max_idle (unsigned int nthreads);
+
+unsigned int eio_nreqs (void); /* number of requests in-flight */
+unsigned int eio_nready (void); /* number of not-yet handled requests */
+unsigned int eio_npending (void); /* numbe rof finished but unhandled requests */
+unsigned int eio_nthreads (void); /* number of worker threads in use currently */
+
+/*****************************************************************************/
+/* convinience wrappers */
+
+#ifndef EIO_NO_WRAPPERS
+eio_req *eio_nop (int pri, eio_cb cb, void *data); /* does nothing except go through the whole process */
+eio_req *eio_busy (eio_tstamp delay, int pri, eio_cb cb, void *data); /* ties a thread for this long, simulating busyness */
+eio_req *eio_sync (int pri, eio_cb cb, void *data);
+eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data);
+eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data);
+eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data);
+eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data);
+eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data);
+eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data);
+eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data);
+eio_req *eio_close (int fd, int pri, eio_cb cb, void *data);
+eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data);
+eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
+eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data);
+eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
+eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
+eio_req *eio_futime (int fd, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data);
+eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data);
+eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data);
+eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data);
+eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data);
+eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data);
+eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data);
+eio_req *eio_utime (const char *path, eio_tstamp atime, eio_tstamp mtime, int pri, eio_cb cb, void *data);
+eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data);
+eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data);
+eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data);
+eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data);
+eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */
+eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data);
+eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data);
+eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data); /* result=ptr2 allocated dynamically */
+eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
+eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
+eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data); /* stat buffer=ptr2 allocated dynamically */
+eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data);
+eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
+eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
+eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data);
+eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data);
+#endif
+
+/*****************************************************************************/
+/* groups */
+
+eio_req *eio_grp (eio_cb cb, void *data);
+void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit);
+void eio_grp_limit (eio_req *grp, int limit);
+void eio_grp_add (eio_req *grp, eio_req *req);
+void eio_grp_cancel (eio_req *grp); /* cancels all sub requests but not the group */
+
+/*****************************************************************************/
+/* request api */
+
+/* true if the request was cancelled, useful in the invoke callback */
+#define EIO_CANCELLED(req) ((req)->flags & EIO_FLAG_CANCELLED)
+
+#define EIO_RESULT(req) ((req)->result)
+/* returns a pointer to the result buffer allocated by eio */
+#define EIO_BUF(req) ((req)->ptr2)
+#define EIO_STAT_BUF(req) ((EIO_STRUCT_STAT *)EIO_BUF(req))
+#define EIO_STATVFS_BUF(req) ((EIO_STRUCT_STATVFS *)EIO_BUF(req))
+#define EIO_PATH(req) ((char *)(req)->ptr1)
+
+/* submit a request for execution */
+void eio_submit (eio_req *req);
+/* cancel a request as soon fast as possible, if possible */
+void eio_cancel (eio_req *req);
+/* destroy a request that has never been submitted */
+void eio_destroy (eio_req *req);
+
+/*****************************************************************************/
+/* convinience functions */
+
+ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count);
+
+/*****************************************************************************/
+/* export these so node_file can use these function instead of pread/write */
+
+#if !HAVE_PREADWRITE
+ssize_t eio__pread (int fd, void *buf, size_t count, off_t offset);
+ssize_t eio__pwrite (int fd, void *buf, size_t count, off_t offset);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
--- /dev/null
+
+/*
+ * Copyright (C) Igor Sysoev
+ */
+
+
+#ifndef _NGX_QUEUE_H_INCLUDED_
+#define _NGX_QUEUE_H_INCLUDED_
+
+
+typedef struct ngx_queue_s ngx_queue_t;
+
+struct ngx_queue_s {
+ ngx_queue_t *prev;
+ ngx_queue_t *next;
+};
+
+
+#define ngx_queue_init(q) \
+ (q)->prev = q; \
+ (q)->next = q
+
+
+#define ngx_queue_empty(h) \
+ (h == (h)->prev)
+
+
+#define ngx_queue_insert_head(h, x) \
+ (x)->next = (h)->next; \
+ (x)->next->prev = x; \
+ (x)->prev = h; \
+ (h)->next = x
+
+
+#define ngx_queue_insert_after ngx_queue_insert_head
+
+
+#define ngx_queue_insert_tail(h, x) \
+ (x)->prev = (h)->prev; \
+ (x)->prev->next = x; \
+ (x)->next = h; \
+ (h)->prev = x
+
+
+#define ngx_queue_head(h) \
+ (h)->next
+
+
+#define ngx_queue_last(h) \
+ (h)->prev
+
+
+#define ngx_queue_sentinel(h) \
+ (h)
+
+
+#define ngx_queue_next(q) \
+ (q)->next
+
+
+#define ngx_queue_prev(q) \
+ (q)->prev
+
+
+#if (NGX_DEBUG)
+
+#define ngx_queue_remove(x) \
+ (x)->next->prev = (x)->prev; \
+ (x)->prev->next = (x)->next; \
+ (x)->prev = NULL; \
+ (x)->next = NULL
+
+#else
+
+#define ngx_queue_remove(x) \
+ (x)->next->prev = (x)->prev; \
+ (x)->prev->next = (x)->next
+
+#endif
+
+
+#define ngx_queue_split(h, q, n) \
+ (n)->prev = (h)->prev; \
+ (n)->prev->next = n; \
+ (n)->next = q; \
+ (h)->prev = (q)->prev; \
+ (h)->prev->next = h; \
+ (q)->prev = n;
+
+
+#define ngx_queue_add(h, n) \
+ (h)->prev->next = (n)->next; \
+ (n)->next->prev = (h)->prev; \
+ (h)->prev = (n)->prev; \
+ (h)->prev->next = h;
+
+
+#define ngx_queue_data(q, type, link) \
+ (type *) ((unsigned char *) q - offsetof(type, link))
+
+
+#endif /* _NGX_QUEUE_H_INCLUDED_ */
--- /dev/null
+/*-
+ * Copyright 2002 Niels Provos <provos@citi.umich.edu>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _UV_TREE_H_
+#define _UV_TREE_H_
+
+#define __unused
+
+/*
+ * This file defines data structures for different types of trees:
+ * splay trees and red-black trees.
+ *
+ * A splay tree is a self-organizing data structure. Every operation
+ * on the tree causes a splay to happen. The splay moves the requested
+ * node to the root of the tree and partly rebalances it.
+ *
+ * This has the benefit that request locality causes faster lookups as
+ * the requested nodes move to the top of the tree. On the other hand,
+ * every lookup causes memory writes.
+ *
+ * The Balance Theorem bounds the total access time for m operations
+ * and n inserts on an initially empty tree as O((m + n)lg n). The
+ * amortized cost for a sequence of m accesses to a splay tree is O(lg n);
+ *
+ * A red-black tree is a binary search tree with the node color as an
+ * extra attribute. It fulfills a set of conditions:
+ * - every search path from the root to a leaf consists of the
+ * same number of black nodes,
+ * - each red node (except for the root) has a black parent,
+ * - each leaf node is black.
+ *
+ * Every operation on a red-black tree is bounded as O(lg n).
+ * The maximum height of a red-black tree is 2lg (n+1).
+ */
+
+#define SPLAY_HEAD(name, type) \
+struct name { \
+ struct type *sph_root; /* root of the tree */ \
+}
+
+#define SPLAY_INITIALIZER(root) \
+ { NULL }
+
+#define SPLAY_INIT(root) do { \
+ (root)->sph_root = NULL; \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_ENTRY(type) \
+struct { \
+ struct type *spe_left; /* left element */ \
+ struct type *spe_right; /* right element */ \
+}
+
+#define SPLAY_LEFT(elm, field) (elm)->field.spe_left
+#define SPLAY_RIGHT(elm, field) (elm)->field.spe_right
+#define SPLAY_ROOT(head) (head)->sph_root
+#define SPLAY_EMPTY(head) (SPLAY_ROOT(head) == NULL)
+
+/* SPLAY_ROTATE_{LEFT,RIGHT} expect that tmp hold SPLAY_{RIGHT,LEFT} */
+#define SPLAY_ROTATE_RIGHT(head, tmp, field) do { \
+ SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(tmp, field); \
+ SPLAY_RIGHT(tmp, field) = (head)->sph_root; \
+ (head)->sph_root = tmp; \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_ROTATE_LEFT(head, tmp, field) do { \
+ SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(tmp, field); \
+ SPLAY_LEFT(tmp, field) = (head)->sph_root; \
+ (head)->sph_root = tmp; \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_LINKLEFT(head, tmp, field) do { \
+ SPLAY_LEFT(tmp, field) = (head)->sph_root; \
+ tmp = (head)->sph_root; \
+ (head)->sph_root = SPLAY_LEFT((head)->sph_root, field); \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_LINKRIGHT(head, tmp, field) do { \
+ SPLAY_RIGHT(tmp, field) = (head)->sph_root; \
+ tmp = (head)->sph_root; \
+ (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field); \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_ASSEMBLE(head, node, left, right, field) do { \
+ SPLAY_RIGHT(left, field) = SPLAY_LEFT((head)->sph_root, field); \
+ SPLAY_LEFT(right, field) = SPLAY_RIGHT((head)->sph_root, field); \
+ SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(node, field); \
+ SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(node, field); \
+} while (/*CONSTCOND*/ 0)
+
+/* Generates prototypes and inline functions */
+
+#define SPLAY_PROTOTYPE(name, type, field, cmp) \
+void name##_SPLAY(struct name *, struct type *); \
+void name##_SPLAY_MINMAX(struct name *, int); \
+struct type *name##_SPLAY_INSERT(struct name *, struct type *); \
+struct type *name##_SPLAY_REMOVE(struct name *, struct type *); \
+ \
+/* Finds the node with the same key as elm */ \
+static __inline struct type * \
+name##_SPLAY_FIND(struct name *head, struct type *elm) \
+{ \
+ if (SPLAY_EMPTY(head)) \
+ return(NULL); \
+ name##_SPLAY(head, elm); \
+ if ((cmp)(elm, (head)->sph_root) == 0) \
+ return (head->sph_root); \
+ return (NULL); \
+} \
+ \
+static __inline struct type * \
+name##_SPLAY_NEXT(struct name *head, struct type *elm) \
+{ \
+ name##_SPLAY(head, elm); \
+ if (SPLAY_RIGHT(elm, field) != NULL) { \
+ elm = SPLAY_RIGHT(elm, field); \
+ while (SPLAY_LEFT(elm, field) != NULL) { \
+ elm = SPLAY_LEFT(elm, field); \
+ } \
+ } else \
+ elm = NULL; \
+ return (elm); \
+} \
+ \
+static __inline struct type * \
+name##_SPLAY_MIN_MAX(struct name *head, int val) \
+{ \
+ name##_SPLAY_MINMAX(head, val); \
+ return (SPLAY_ROOT(head)); \
+}
+
+/* Main splay operation.
+ * Moves node close to the key of elm to top
+ */
+#define SPLAY_GENERATE(name, type, field, cmp) \
+struct type * \
+name##_SPLAY_INSERT(struct name *head, struct type *elm) \
+{ \
+ if (SPLAY_EMPTY(head)) { \
+ SPLAY_LEFT(elm, field) = SPLAY_RIGHT(elm, field) = NULL; \
+ } else { \
+ int __comp; \
+ name##_SPLAY(head, elm); \
+ __comp = (cmp)(elm, (head)->sph_root); \
+ if(__comp < 0) { \
+ SPLAY_LEFT(elm, field) = SPLAY_LEFT((head)->sph_root, field); \
+ SPLAY_RIGHT(elm, field) = (head)->sph_root; \
+ SPLAY_LEFT((head)->sph_root, field) = NULL; \
+ } else if (__comp > 0) { \
+ SPLAY_RIGHT(elm, field) = SPLAY_RIGHT((head)->sph_root, field); \
+ SPLAY_LEFT(elm, field) = (head)->sph_root; \
+ SPLAY_RIGHT((head)->sph_root, field) = NULL; \
+ } else \
+ return ((head)->sph_root); \
+ } \
+ (head)->sph_root = (elm); \
+ return (NULL); \
+} \
+ \
+struct type * \
+name##_SPLAY_REMOVE(struct name *head, struct type *elm) \
+{ \
+ struct type *__tmp; \
+ if (SPLAY_EMPTY(head)) \
+ return (NULL); \
+ name##_SPLAY(head, elm); \
+ if ((cmp)(elm, (head)->sph_root) == 0) { \
+ if (SPLAY_LEFT((head)->sph_root, field) == NULL) { \
+ (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field); \
+ } else { \
+ __tmp = SPLAY_RIGHT((head)->sph_root, field); \
+ (head)->sph_root = SPLAY_LEFT((head)->sph_root, field); \
+ name##_SPLAY(head, elm); \
+ SPLAY_RIGHT((head)->sph_root, field) = __tmp; \
+ } \
+ return (elm); \
+ } \
+ return (NULL); \
+} \
+ \
+void \
+name##_SPLAY(struct name *head, struct type *elm) \
+{ \
+ struct type __node, *__left, *__right, *__tmp; \
+ int __comp; \
+ \
+ SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL; \
+ __left = __right = &__node; \
+ \
+ while ((__comp = (cmp)(elm, (head)->sph_root)) != 0) { \
+ if (__comp < 0) { \
+ __tmp = SPLAY_LEFT((head)->sph_root, field); \
+ if (__tmp == NULL) \
+ break; \
+ if ((cmp)(elm, __tmp) < 0){ \
+ SPLAY_ROTATE_RIGHT(head, __tmp, field); \
+ if (SPLAY_LEFT((head)->sph_root, field) == NULL) \
+ break; \
+ } \
+ SPLAY_LINKLEFT(head, __right, field); \
+ } else if (__comp > 0) { \
+ __tmp = SPLAY_RIGHT((head)->sph_root, field); \
+ if (__tmp == NULL) \
+ break; \
+ if ((cmp)(elm, __tmp) > 0){ \
+ SPLAY_ROTATE_LEFT(head, __tmp, field); \
+ if (SPLAY_RIGHT((head)->sph_root, field) == NULL) \
+ break; \
+ } \
+ SPLAY_LINKRIGHT(head, __left, field); \
+ } \
+ } \
+ SPLAY_ASSEMBLE(head, &__node, __left, __right, field); \
+} \
+ \
+/* Splay with either the minimum or the maximum element \
+ * Used to find minimum or maximum element in tree. \
+ */ \
+void name##_SPLAY_MINMAX(struct name *head, int __comp) \
+{ \
+ struct type __node, *__left, *__right, *__tmp; \
+ \
+ SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL; \
+ __left = __right = &__node; \
+ \
+ while (1) { \
+ if (__comp < 0) { \
+ __tmp = SPLAY_LEFT((head)->sph_root, field); \
+ if (__tmp == NULL) \
+ break; \
+ if (__comp < 0){ \
+ SPLAY_ROTATE_RIGHT(head, __tmp, field); \
+ if (SPLAY_LEFT((head)->sph_root, field) == NULL) \
+ break; \
+ } \
+ SPLAY_LINKLEFT(head, __right, field); \
+ } else if (__comp > 0) { \
+ __tmp = SPLAY_RIGHT((head)->sph_root, field); \
+ if (__tmp == NULL) \
+ break; \
+ if (__comp > 0) { \
+ SPLAY_ROTATE_LEFT(head, __tmp, field); \
+ if (SPLAY_RIGHT((head)->sph_root, field) == NULL) \
+ break; \
+ } \
+ SPLAY_LINKRIGHT(head, __left, field); \
+ } \
+ } \
+ SPLAY_ASSEMBLE(head, &__node, __left, __right, field); \
+}
+
+#define SPLAY_NEGINF -1
+#define SPLAY_INF 1
+
+#define SPLAY_INSERT(name, x, y) name##_SPLAY_INSERT(x, y)
+#define SPLAY_REMOVE(name, x, y) name##_SPLAY_REMOVE(x, y)
+#define SPLAY_FIND(name, x, y) name##_SPLAY_FIND(x, y)
+#define SPLAY_NEXT(name, x, y) name##_SPLAY_NEXT(x, y)
+#define SPLAY_MIN(name, x) (SPLAY_EMPTY(x) ? NULL \
+ : name##_SPLAY_MIN_MAX(x, SPLAY_NEGINF))
+#define SPLAY_MAX(name, x) (SPLAY_EMPTY(x) ? NULL \
+ : name##_SPLAY_MIN_MAX(x, SPLAY_INF))
+
+#define SPLAY_FOREACH(x, name, head) \
+ for ((x) = SPLAY_MIN(name, head); \
+ (x) != NULL; \
+ (x) = SPLAY_NEXT(name, head, x))
+
+/* Macros that define a red-black tree */
+#define RB_HEAD(name, type) \
+struct name { \
+ struct type *rbh_root; /* root of the tree */ \
+}
+
+#define RB_INITIALIZER(root) \
+ { NULL }
+
+#define RB_INIT(root) do { \
+ (root)->rbh_root = NULL; \
+} while (/*CONSTCOND*/ 0)
+
+#define RB_BLACK 0
+#define RB_RED 1
+#define RB_ENTRY(type) \
+struct { \
+ struct type *rbe_left; /* left element */ \
+ struct type *rbe_right; /* right element */ \
+ struct type *rbe_parent; /* parent element */ \
+ int rbe_color; /* node color */ \
+}
+
+#define RB_LEFT(elm, field) (elm)->field.rbe_left
+#define RB_RIGHT(elm, field) (elm)->field.rbe_right
+#define RB_PARENT(elm, field) (elm)->field.rbe_parent
+#define RB_COLOR(elm, field) (elm)->field.rbe_color
+#define RB_ROOT(head) (head)->rbh_root
+#define RB_EMPTY(head) (RB_ROOT(head) == NULL)
+
+#define RB_SET(elm, parent, field) do { \
+ RB_PARENT(elm, field) = parent; \
+ RB_LEFT(elm, field) = RB_RIGHT(elm, field) = NULL; \
+ RB_COLOR(elm, field) = RB_RED; \
+} while (/*CONSTCOND*/ 0)
+
+#define RB_SET_BLACKRED(black, red, field) do { \
+ RB_COLOR(black, field) = RB_BLACK; \
+ RB_COLOR(red, field) = RB_RED; \
+} while (/*CONSTCOND*/ 0)
+
+#ifndef RB_AUGMENT
+#define RB_AUGMENT(x) do {} while (0)
+#endif
+
+#define RB_ROTATE_LEFT(head, elm, tmp, field) do { \
+ (tmp) = RB_RIGHT(elm, field); \
+ if ((RB_RIGHT(elm, field) = RB_LEFT(tmp, field)) != NULL) { \
+ RB_PARENT(RB_LEFT(tmp, field), field) = (elm); \
+ } \
+ RB_AUGMENT(elm); \
+ if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) { \
+ if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \
+ RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \
+ else \
+ RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \
+ } else \
+ (head)->rbh_root = (tmp); \
+ RB_LEFT(tmp, field) = (elm); \
+ RB_PARENT(elm, field) = (tmp); \
+ RB_AUGMENT(tmp); \
+ if ((RB_PARENT(tmp, field))) \
+ RB_AUGMENT(RB_PARENT(tmp, field)); \
+} while (/*CONSTCOND*/ 0)
+
+#define RB_ROTATE_RIGHT(head, elm, tmp, field) do { \
+ (tmp) = RB_LEFT(elm, field); \
+ if ((RB_LEFT(elm, field) = RB_RIGHT(tmp, field)) != NULL) { \
+ RB_PARENT(RB_RIGHT(tmp, field), field) = (elm); \
+ } \
+ RB_AUGMENT(elm); \
+ if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) { \
+ if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \
+ RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \
+ else \
+ RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \
+ } else \
+ (head)->rbh_root = (tmp); \
+ RB_RIGHT(tmp, field) = (elm); \
+ RB_PARENT(elm, field) = (tmp); \
+ RB_AUGMENT(tmp); \
+ if ((RB_PARENT(tmp, field))) \
+ RB_AUGMENT(RB_PARENT(tmp, field)); \
+} while (/*CONSTCOND*/ 0)
+
+/* Generates prototypes and inline functions */
+#define RB_PROTOTYPE(name, type, field, cmp) \
+ RB_PROTOTYPE_INTERNAL(name, type, field, cmp,)
+#define RB_PROTOTYPE_STATIC(name, type, field, cmp) \
+ RB_PROTOTYPE_INTERNAL(name, type, field, cmp, __unused static)
+#define RB_PROTOTYPE_INTERNAL(name, type, field, cmp, attr) \
+attr void name##_RB_INSERT_COLOR(struct name *, struct type *); \
+attr void name##_RB_REMOVE_COLOR(struct name *, struct type *, struct type *);\
+attr struct type *name##_RB_REMOVE(struct name *, struct type *); \
+attr struct type *name##_RB_INSERT(struct name *, struct type *); \
+attr struct type *name##_RB_FIND(struct name *, struct type *); \
+attr struct type *name##_RB_NFIND(struct name *, struct type *); \
+attr struct type *name##_RB_NEXT(struct type *); \
+attr struct type *name##_RB_PREV(struct type *); \
+attr struct type *name##_RB_MINMAX(struct name *, int); \
+ \
+
+/* Main rb operation.
+ * Moves node close to the key of elm to top
+ */
+#define RB_GENERATE(name, type, field, cmp) \
+ RB_GENERATE_INTERNAL(name, type, field, cmp,)
+#define RB_GENERATE_STATIC(name, type, field, cmp) \
+ RB_GENERATE_INTERNAL(name, type, field, cmp, __unused static)
+#define RB_GENERATE_INTERNAL(name, type, field, cmp, attr) \
+attr void \
+name##_RB_INSERT_COLOR(struct name *head, struct type *elm) \
+{ \
+ struct type *parent, *gparent, *tmp; \
+ while ((parent = RB_PARENT(elm, field)) != NULL && \
+ RB_COLOR(parent, field) == RB_RED) { \
+ gparent = RB_PARENT(parent, field); \
+ if (parent == RB_LEFT(gparent, field)) { \
+ tmp = RB_RIGHT(gparent, field); \
+ if (tmp && RB_COLOR(tmp, field) == RB_RED) { \
+ RB_COLOR(tmp, field) = RB_BLACK; \
+ RB_SET_BLACKRED(parent, gparent, field); \
+ elm = gparent; \
+ continue; \
+ } \
+ if (RB_RIGHT(parent, field) == elm) { \
+ RB_ROTATE_LEFT(head, parent, tmp, field); \
+ tmp = parent; \
+ parent = elm; \
+ elm = tmp; \
+ } \
+ RB_SET_BLACKRED(parent, gparent, field); \
+ RB_ROTATE_RIGHT(head, gparent, tmp, field); \
+ } else { \
+ tmp = RB_LEFT(gparent, field); \
+ if (tmp && RB_COLOR(tmp, field) == RB_RED) { \
+ RB_COLOR(tmp, field) = RB_BLACK; \
+ RB_SET_BLACKRED(parent, gparent, field); \
+ elm = gparent; \
+ continue; \
+ } \
+ if (RB_LEFT(parent, field) == elm) { \
+ RB_ROTATE_RIGHT(head, parent, tmp, field); \
+ tmp = parent; \
+ parent = elm; \
+ elm = tmp; \
+ } \
+ RB_SET_BLACKRED(parent, gparent, field); \
+ RB_ROTATE_LEFT(head, gparent, tmp, field); \
+ } \
+ } \
+ RB_COLOR(head->rbh_root, field) = RB_BLACK; \
+} \
+ \
+attr void \
+name##_RB_REMOVE_COLOR(struct name *head, struct type *parent, \
+ struct type *elm) \
+{ \
+ struct type *tmp; \
+ while ((elm == NULL || RB_COLOR(elm, field) == RB_BLACK) && \
+ elm != RB_ROOT(head)) { \
+ if (RB_LEFT(parent, field) == elm) { \
+ tmp = RB_RIGHT(parent, field); \
+ if (RB_COLOR(tmp, field) == RB_RED) { \
+ RB_SET_BLACKRED(tmp, parent, field); \
+ RB_ROTATE_LEFT(head, parent, tmp, field); \
+ tmp = RB_RIGHT(parent, field); \
+ } \
+ if ((RB_LEFT(tmp, field) == NULL || \
+ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) && \
+ (RB_RIGHT(tmp, field) == NULL || \
+ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) { \
+ RB_COLOR(tmp, field) = RB_RED; \
+ elm = parent; \
+ parent = RB_PARENT(elm, field); \
+ } else { \
+ if (RB_RIGHT(tmp, field) == NULL || \
+ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK) { \
+ struct type *oleft; \
+ if ((oleft = RB_LEFT(tmp, field)) \
+ != NULL) \
+ RB_COLOR(oleft, field) = RB_BLACK; \
+ RB_COLOR(tmp, field) = RB_RED; \
+ RB_ROTATE_RIGHT(head, tmp, oleft, field); \
+ tmp = RB_RIGHT(parent, field); \
+ } \
+ RB_COLOR(tmp, field) = RB_COLOR(parent, field); \
+ RB_COLOR(parent, field) = RB_BLACK; \
+ if (RB_RIGHT(tmp, field)) \
+ RB_COLOR(RB_RIGHT(tmp, field), field) = RB_BLACK; \
+ RB_ROTATE_LEFT(head, parent, tmp, field); \
+ elm = RB_ROOT(head); \
+ break; \
+ } \
+ } else { \
+ tmp = RB_LEFT(parent, field); \
+ if (RB_COLOR(tmp, field) == RB_RED) { \
+ RB_SET_BLACKRED(tmp, parent, field); \
+ RB_ROTATE_RIGHT(head, parent, tmp, field); \
+ tmp = RB_LEFT(parent, field); \
+ } \
+ if ((RB_LEFT(tmp, field) == NULL || \
+ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) && \
+ (RB_RIGHT(tmp, field) == NULL || \
+ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) { \
+ RB_COLOR(tmp, field) = RB_RED; \
+ elm = parent; \
+ parent = RB_PARENT(elm, field); \
+ } else { \
+ if (RB_LEFT(tmp, field) == NULL || \
+ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) { \
+ struct type *oright; \
+ if ((oright = RB_RIGHT(tmp, field)) \
+ != NULL) \
+ RB_COLOR(oright, field) = RB_BLACK; \
+ RB_COLOR(tmp, field) = RB_RED; \
+ RB_ROTATE_LEFT(head, tmp, oright, field); \
+ tmp = RB_LEFT(parent, field); \
+ } \
+ RB_COLOR(tmp, field) = RB_COLOR(parent, field); \
+ RB_COLOR(parent, field) = RB_BLACK; \
+ if (RB_LEFT(tmp, field)) \
+ RB_COLOR(RB_LEFT(tmp, field), field) = RB_BLACK; \
+ RB_ROTATE_RIGHT(head, parent, tmp, field); \
+ elm = RB_ROOT(head); \
+ break; \
+ } \
+ } \
+ } \
+ if (elm) \
+ RB_COLOR(elm, field) = RB_BLACK; \
+} \
+ \
+attr struct type * \
+name##_RB_REMOVE(struct name *head, struct type *elm) \
+{ \
+ struct type *child, *parent, *old = elm; \
+ int color; \
+ if (RB_LEFT(elm, field) == NULL) \
+ child = RB_RIGHT(elm, field); \
+ else if (RB_RIGHT(elm, field) == NULL) \
+ child = RB_LEFT(elm, field); \
+ else { \
+ struct type *left; \
+ elm = RB_RIGHT(elm, field); \
+ while ((left = RB_LEFT(elm, field)) != NULL) \
+ elm = left; \
+ child = RB_RIGHT(elm, field); \
+ parent = RB_PARENT(elm, field); \
+ color = RB_COLOR(elm, field); \
+ if (child) \
+ RB_PARENT(child, field) = parent; \
+ if (parent) { \
+ if (RB_LEFT(parent, field) == elm) \
+ RB_LEFT(parent, field) = child; \
+ else \
+ RB_RIGHT(parent, field) = child; \
+ RB_AUGMENT(parent); \
+ } else \
+ RB_ROOT(head) = child; \
+ if (RB_PARENT(elm, field) == old) \
+ parent = elm; \
+ (elm)->field = (old)->field; \
+ if (RB_PARENT(old, field)) { \
+ if (RB_LEFT(RB_PARENT(old, field), field) == old) \
+ RB_LEFT(RB_PARENT(old, field), field) = elm; \
+ else \
+ RB_RIGHT(RB_PARENT(old, field), field) = elm; \
+ RB_AUGMENT(RB_PARENT(old, field)); \
+ } else \
+ RB_ROOT(head) = elm; \
+ RB_PARENT(RB_LEFT(old, field), field) = elm; \
+ if (RB_RIGHT(old, field)) \
+ RB_PARENT(RB_RIGHT(old, field), field) = elm; \
+ if (parent) { \
+ left = parent; \
+ do { \
+ RB_AUGMENT(left); \
+ } while ((left = RB_PARENT(left, field)) != NULL); \
+ } \
+ goto color; \
+ } \
+ parent = RB_PARENT(elm, field); \
+ color = RB_COLOR(elm, field); \
+ if (child) \
+ RB_PARENT(child, field) = parent; \
+ if (parent) { \
+ if (RB_LEFT(parent, field) == elm) \
+ RB_LEFT(parent, field) = child; \
+ else \
+ RB_RIGHT(parent, field) = child; \
+ RB_AUGMENT(parent); \
+ } else \
+ RB_ROOT(head) = child; \
+color: \
+ if (color == RB_BLACK) \
+ name##_RB_REMOVE_COLOR(head, parent, child); \
+ return (old); \
+} \
+ \
+/* Inserts a node into the RB tree */ \
+attr struct type * \
+name##_RB_INSERT(struct name *head, struct type *elm) \
+{ \
+ struct type *tmp; \
+ struct type *parent = NULL; \
+ int comp = 0; \
+ tmp = RB_ROOT(head); \
+ while (tmp) { \
+ parent = tmp; \
+ comp = (cmp)(elm, parent); \
+ if (comp < 0) \
+ tmp = RB_LEFT(tmp, field); \
+ else if (comp > 0) \
+ tmp = RB_RIGHT(tmp, field); \
+ else \
+ return (tmp); \
+ } \
+ RB_SET(elm, parent, field); \
+ if (parent != NULL) { \
+ if (comp < 0) \
+ RB_LEFT(parent, field) = elm; \
+ else \
+ RB_RIGHT(parent, field) = elm; \
+ RB_AUGMENT(parent); \
+ } else \
+ RB_ROOT(head) = elm; \
+ name##_RB_INSERT_COLOR(head, elm); \
+ return (NULL); \
+} \
+ \
+/* Finds the node with the same key as elm */ \
+attr struct type * \
+name##_RB_FIND(struct name *head, struct type *elm) \
+{ \
+ struct type *tmp = RB_ROOT(head); \
+ int comp; \
+ while (tmp) { \
+ comp = cmp(elm, tmp); \
+ if (comp < 0) \
+ tmp = RB_LEFT(tmp, field); \
+ else if (comp > 0) \
+ tmp = RB_RIGHT(tmp, field); \
+ else \
+ return (tmp); \
+ } \
+ return (NULL); \
+} \
+ \
+/* Finds the first node greater than or equal to the search key */ \
+attr struct type * \
+name##_RB_NFIND(struct name *head, struct type *elm) \
+{ \
+ struct type *tmp = RB_ROOT(head); \
+ struct type *res = NULL; \
+ int comp; \
+ while (tmp) { \
+ comp = cmp(elm, tmp); \
+ if (comp < 0) { \
+ res = tmp; \
+ tmp = RB_LEFT(tmp, field); \
+ } \
+ else if (comp > 0) \
+ tmp = RB_RIGHT(tmp, field); \
+ else \
+ return (tmp); \
+ } \
+ return (res); \
+} \
+ \
+/* ARGSUSED */ \
+attr struct type * \
+name##_RB_NEXT(struct type *elm) \
+{ \
+ if (RB_RIGHT(elm, field)) { \
+ elm = RB_RIGHT(elm, field); \
+ while (RB_LEFT(elm, field)) \
+ elm = RB_LEFT(elm, field); \
+ } else { \
+ if (RB_PARENT(elm, field) && \
+ (elm == RB_LEFT(RB_PARENT(elm, field), field))) \
+ elm = RB_PARENT(elm, field); \
+ else { \
+ while (RB_PARENT(elm, field) && \
+ (elm == RB_RIGHT(RB_PARENT(elm, field), field))) \
+ elm = RB_PARENT(elm, field); \
+ elm = RB_PARENT(elm, field); \
+ } \
+ } \
+ return (elm); \
+} \
+ \
+/* ARGSUSED */ \
+attr struct type * \
+name##_RB_PREV(struct type *elm) \
+{ \
+ if (RB_LEFT(elm, field)) { \
+ elm = RB_LEFT(elm, field); \
+ while (RB_RIGHT(elm, field)) \
+ elm = RB_RIGHT(elm, field); \
+ } else { \
+ if (RB_PARENT(elm, field) && \
+ (elm == RB_RIGHT(RB_PARENT(elm, field), field))) \
+ elm = RB_PARENT(elm, field); \
+ else { \
+ while (RB_PARENT(elm, field) && \
+ (elm == RB_LEFT(RB_PARENT(elm, field), field))) \
+ elm = RB_PARENT(elm, field); \
+ elm = RB_PARENT(elm, field); \
+ } \
+ } \
+ return (elm); \
+} \
+ \
+attr struct type * \
+name##_RB_MINMAX(struct name *head, int val) \
+{ \
+ struct type *tmp = RB_ROOT(head); \
+ struct type *parent = NULL; \
+ while (tmp) { \
+ parent = tmp; \
+ if (val < 0) \
+ tmp = RB_LEFT(tmp, field); \
+ else \
+ tmp = RB_RIGHT(tmp, field); \
+ } \
+ return (parent); \
+}
+
+#define RB_NEGINF -1
+#define RB_INF 1
+
+#define RB_INSERT(name, x, y) name##_RB_INSERT(x, y)
+#define RB_REMOVE(name, x, y) name##_RB_REMOVE(x, y)
+#define RB_FIND(name, x, y) name##_RB_FIND(x, y)
+#define RB_NFIND(name, x, y) name##_RB_NFIND(x, y)
+#define RB_NEXT(name, x, y) name##_RB_NEXT(y)
+#define RB_PREV(name, x, y) name##_RB_PREV(y)
+#define RB_MIN(name, x) name##_RB_MINMAX(x, RB_NEGINF)
+#define RB_MAX(name, x) name##_RB_MINMAX(x, RB_INF)
+
+#define RB_FOREACH(x, name, head) \
+ for ((x) = RB_MIN(name, head); \
+ (x) != NULL; \
+ (x) = name##_RB_NEXT(x))
+
+#define RB_FOREACH_FROM(x, name, y) \
+ for ((x) = (y); \
+ ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL); \
+ (x) = (y))
+
+#define RB_FOREACH_SAFE(x, name, head, y) \
+ for ((x) = RB_MIN(name, head); \
+ ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL); \
+ (x) = (y))
+
+#define RB_FOREACH_REVERSE(x, name, head) \
+ for ((x) = RB_MAX(name, head); \
+ (x) != NULL; \
+ (x) = name##_RB_PREV(x))
+
+#define RB_FOREACH_REVERSE_FROM(x, name, y) \
+ for ((x) = (y); \
+ ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL); \
+ (x) = (y))
+
+#define RB_FOREACH_REVERSE_SAFE(x, name, head, y) \
+ for ((x) = RB_MAX(name, head); \
+ ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL); \
+ (x) = (y))
+
+#endif /* _UV_TREE_H_ */
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef UV_UNIX_H
+#define UV_UNIX_H
+
+#include "ngx-queue.h"
+
+#include "ev.h"
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+
+
+/* Note: May be cast to struct iovec. See writev(2). */
+typedef struct {
+ char* base;
+ size_t len;
+} uv_buf_t;
+
+#define UV_REQ_BUFSML_SIZE (4)
+
+#define UV_REQ_PRIVATE_FIELDS \
+ int write_index; \
+ ev_timer timer; \
+ ngx_queue_t queue; \
+ uv_buf_t* bufs; \
+ int bufcnt; \
+ uv_buf_t bufsml[UV_REQ_BUFSML_SIZE];
+
+
+/* TODO: union or classes please! */
+#define UV_HANDLE_PRIVATE_FIELDS \
+ int fd; \
+ int flags; \
+ ev_idle next_watcher;
+
+
+#define UV_STREAM_PRIVATE_FIELDS \
+ uv_read_cb read_cb; \
+ uv_alloc_cb alloc_cb;
+
+
+/* UV_TCP */
+#define UV_TCP_PRIVATE_FIELDS \
+ int delayed_error; \
+ uv_connection_cb connection_cb; \
+ int accepted_fd; \
+ uv_req_t *connect_req; \
+ uv_req_t *shutdown_req; \
+ ev_io read_watcher; \
+ ev_io write_watcher; \
+ ngx_queue_t write_queue; \
+ ngx_queue_t write_completed_queue;
+
+
+/* UV_PREPARE */ \
+#define UV_PREPARE_PRIVATE_FIELDS \
+ ev_prepare prepare_watcher; \
+ uv_prepare_cb prepare_cb;
+
+
+/* UV_CHECK */
+#define UV_CHECK_PRIVATE_FIELDS \
+ ev_check check_watcher; \
+ uv_check_cb check_cb;
+
+
+/* UV_IDLE */
+#define UV_IDLE_PRIVATE_FIELDS \
+ ev_idle idle_watcher; \
+ uv_idle_cb idle_cb;
+
+
+/* UV_ASYNC */
+#define UV_ASYNC_PRIVATE_FIELDS \
+ ev_async async_watcher; \
+ uv_async_cb async_cb;
+
+
+/* UV_TIMER */
+#define UV_TIMER_PRIVATE_FIELDS \
+ ev_timer timer_watcher; \
+ uv_timer_cb timer_cb;
+
+#define UV_ARES_TASK_PRIVATE_FIELDS \
+ int sock; \
+ ev_io read_watcher; \
+ ev_io write_watcher;
+
+#define UV_GETADDRINFO_PRIVATE_FIELDS \
+ uv_getaddrinfo_cb cb; \
+ struct addrinfo* hints; \
+ char* hostname; \
+ char* service; \
+ struct addrinfo* res; \
+ int retcode;
+
+#endif /* UV_UNIX_H */
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef _WIN32_WINNT
+# define _WIN32_WINNT 0x0501
+#endif
+
+#include <stdint.h>
+#include <winsock2.h>
+#include <mswsock.h>
+#include <ws2tcpip.h>
+#include <windows.h>
+
+#include "tree.h"
+
+/**
+ * It should be possible to cast uv_buf_t[] to WSABUF[]
+ * see http://msdn.microsoft.com/en-us/library/ms741542(v=vs.85).aspx
+ */
+typedef struct uv_buf_t {
+ ULONG len;
+ char* base;
+} uv_buf_t;
+
+#define UV_REQ_PRIVATE_FIELDS \
+ union { \
+ /* Used by I/O operations */ \
+ struct { \
+ OVERLAPPED overlapped; \
+ size_t queued_bytes; \
+ }; \
+ }; \
+ int flags; \
+ uv_err_t error; \
+ struct uv_req_s* next_req;
+
+#define UV_STREAM_PRIVATE_FIELDS \
+ uv_alloc_cb alloc_cb; \
+ uv_read_cb read_cb; \
+ struct uv_req_s read_req; \
+
+#define uv_tcp_connection_fields \
+ unsigned int write_reqs_pending; \
+ uv_req_t* shutdown_req;
+
+#define uv_tcp_server_fields \
+ uv_connection_cb connection_cb; \
+ SOCKET accept_socket; \
+ struct uv_req_s accept_req; \
+ char accept_buffer[sizeof(struct sockaddr_storage) * 2 + 32];
+
+#define UV_TCP_PRIVATE_FIELDS \
+ unsigned int reqs_pending; \
+ union { \
+ SOCKET socket; \
+ HANDLE handle; \
+ }; \
+ union { \
+ struct { uv_tcp_connection_fields }; \
+ struct { uv_tcp_server_fields }; \
+ };
+
+#define UV_TIMER_PRIVATE_FIELDS \
+ RB_ENTRY(uv_timer_s) tree_entry; \
+ int64_t due; \
+ int64_t repeat; \
+ uv_timer_cb timer_cb;
+
+#define UV_ASYNC_PRIVATE_FIELDS \
+ struct uv_req_s async_req; \
+ /* char to avoid alignment issues */ \
+ char volatile async_sent;
+
+#define UV_PREPARE_PRIVATE_FIELDS \
+ uv_prepare_t* prepare_prev; \
+ uv_prepare_t* prepare_next; \
+ uv_prepare_cb prepare_cb;
+
+#define UV_CHECK_PRIVATE_FIELDS \
+ uv_check_t* check_prev; \
+ uv_check_t* check_next; \
+ uv_check_cb check_cb;
+
+#define UV_IDLE_PRIVATE_FIELDS \
+ uv_idle_t* idle_prev; \
+ uv_idle_t* idle_next; \
+ uv_idle_cb idle_cb;
+
+#define UV_HANDLE_PRIVATE_FIELDS \
+ uv_handle_t* endgame_next; \
+ unsigned int flags; \
+ uv_err_t error;
+
+#define UV_ARES_TASK_PRIVATE_FIELDS \
+ struct uv_req_s ares_req; \
+ SOCKET sock; \
+ HANDLE h_wait; \
+ WSAEVENT h_event; \
+ HANDLE h_close_event;
+
+#define UV_GETADDRINFO_PRIVATE_FIELDS \
+ struct uv_req_s getadddrinfo_req; \
+ uv_getaddrinfo_cb getaddrinfo_cb; \
+ void* alloc; \
+ wchar_t* node; \
+ wchar_t* service; \
+ struct addrinfoW* hints; \
+ struct addrinfoW* res; \
+ int retcode;
+
+int uv_utf16_to_utf8(wchar_t* utf16Buffer, size_t utf16Size, char* utf8Buffer, size_t utf8Size);
+int uv_utf8_to_utf16(const char* utf8Buffer, wchar_t* utf16Buffer, size_t utf16Size);
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef UV_H
+#define UV_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define UV_VERSION_MAJOR 0
+#define UV_VERSION_MINOR 1
+
+#define CARES_STATICLIB 1
+
+#include <stdint.h> /* int64_t */
+#include <sys/types.h> /* size_t */
+
+#include "ares.h"
+
+#ifndef _SSIZE_T_
+typedef intptr_t ssize_t;
+#endif
+
+typedef struct uv_err_s uv_err_t;
+typedef struct uv_handle_s uv_handle_t;
+typedef struct uv_stream_s uv_stream_t;
+typedef struct uv_tcp_s uv_tcp_t;
+typedef struct uv_timer_s uv_timer_t;
+typedef struct uv_prepare_s uv_prepare_t;
+typedef struct uv_check_s uv_check_t;
+typedef struct uv_idle_s uv_idle_t;
+typedef struct uv_req_s uv_req_t;
+typedef struct uv_async_s uv_async_t;
+typedef struct uv_getaddrinfo_s uv_getaddrinfo_t;
+
+
+#if defined(__unix__) || defined(__POSIX__) || defined(__APPLE__)
+# include "uv-unix.h"
+#else
+# include "uv-win.h"
+#endif
+
+
+/* The status parameter is 0 if the request completed successfully,
+ * and should be -1 if the request was cancelled or failed.
+ * For uv_close_cb, -1 means that the handle was closed due to an error.
+ * Error details can be obtained by calling uv_last_error().
+ *
+ * In the case of uv_read_cb the uv_buf_t returned should be freed by the
+ * user.
+ */
+typedef uv_buf_t (*uv_alloc_cb)(uv_stream_t* tcp, size_t suggested_size);
+typedef void (*uv_read_cb)(uv_stream_t* tcp, ssize_t nread, uv_buf_t buf);
+typedef void (*uv_write_cb)(uv_req_t* req, int status);
+typedef void (*uv_connect_cb)(uv_req_t* req, int status);
+typedef void (*uv_shutdown_cb)(uv_req_t* req, int status);
+typedef void (*uv_connection_cb)(uv_handle_t* server, int status);
+typedef void (*uv_close_cb)(uv_handle_t* handle);
+typedef void (*uv_timer_cb)(uv_timer_t* handle, int status);
+/* TODO: do these really need a status argument? */
+typedef void (*uv_async_cb)(uv_async_t* handle, int status);
+typedef void (*uv_prepare_cb)(uv_prepare_t* handle, int status);
+typedef void (*uv_check_cb)(uv_check_t* handle, int status);
+typedef void (*uv_idle_cb)(uv_idle_t* handle, int status);
+typedef void (*uv_getaddrinfo_cb)(uv_getaddrinfo_t* handle, int status, struct addrinfo* res);
+
+
+/* Expand this list if necessary. */
+typedef enum {
+ UV_UNKNOWN = -1,
+ UV_OK = 0,
+ UV_EOF,
+ UV_EACCESS,
+ UV_EAGAIN,
+ UV_EADDRINUSE,
+ UV_EADDRNOTAVAIL,
+ UV_EAFNOSUPPORT,
+ UV_EALREADY,
+ UV_EBADF,
+ UV_EBUSY,
+ UV_ECONNABORTED,
+ UV_ECONNREFUSED,
+ UV_ECONNRESET,
+ UV_EDESTADDRREQ,
+ UV_EFAULT,
+ UV_EHOSTUNREACH,
+ UV_EINTR,
+ UV_EINVAL,
+ UV_EISCONN,
+ UV_EMFILE,
+ UV_ENETDOWN,
+ UV_ENETUNREACH,
+ UV_ENFILE,
+ UV_ENOBUFS,
+ UV_ENOMEM,
+ UV_ENONET,
+ UV_ENOPROTOOPT,
+ UV_ENOTCONN,
+ UV_ENOTSOCK,
+ UV_ENOTSUP,
+ UV_EPROTO,
+ UV_EPROTONOSUPPORT,
+ UV_EPROTOTYPE,
+ UV_ETIMEDOUT,
+ UV_ECHARSET,
+ UV_EAIFAMNOSUPPORT,
+ UV_EAINONAME,
+ UV_EAISERVICE,
+ UV_EAISOCKTYPE
+} uv_err_code;
+
+typedef enum {
+ UV_UNKNOWN_HANDLE = 0,
+ UV_TCP,
+ UV_NAMED_PIPE,
+ UV_TTY,
+ UV_FILE,
+ UV_TIMER,
+ UV_PREPARE,
+ UV_CHECK,
+ UV_IDLE,
+ UV_ASYNC,
+ UV_ARES,
+ UV_ARES_TASK,
+ UV_GETADDRINFO
+} uv_handle_type;
+
+typedef enum {
+ UV_UNKNOWN_REQ = 0,
+ UV_CONNECT,
+ UV_ACCEPT,
+ UV_READ,
+ UV_WRITE,
+ UV_SHUTDOWN,
+ UV_WAKEUP
+} uv_req_type;
+
+
+struct uv_err_s {
+ /* read-only */
+ uv_err_code code;
+ /* private */
+ int sys_errno_;
+};
+
+
+struct uv_req_s {
+ /* read-only */
+ uv_req_type type;
+ /* public */
+ uv_handle_t* handle;
+ void* cb;
+ void* data;
+ /* private */
+ UV_REQ_PRIVATE_FIELDS
+};
+
+/*
+ * Initialize a request for use with uv_write, uv_shutdown, or uv_connect.
+ */
+void uv_req_init(uv_req_t* req, uv_handle_t* handle, void* cb);
+
+int uv_shutdown(uv_req_t* req);
+
+
+#define UV_HANDLE_FIELDS \
+ /* read-only */ \
+ uv_handle_type type; \
+ /* public */ \
+ uv_close_cb close_cb; \
+ void* data; \
+ /* private */ \
+ UV_HANDLE_PRIVATE_FIELDS \
+
+/* The abstract base class of all handles. */
+struct uv_handle_s {
+ UV_HANDLE_FIELDS
+};
+
+/*
+ * Returns 1 if the prepare/check/idle handle has been started, 0 otherwise.
+ * For other handle types this always returns 1.
+ */
+int uv_is_active(uv_handle_t* handle);
+
+/*
+ * Request handle to be closed. close_cb will be called asynchronously after
+ * this call. This MUST be called on each handle before memory is released.
+ */
+int uv_close(uv_handle_t* handle, uv_close_cb close_cb);
+
+
+#define UV_STREAM_FIELDS \
+ /* number of bytes queued for writing */ \
+ size_t write_queue_size; \
+ /* private */ \
+ UV_STREAM_PRIVATE_FIELDS \
+
+/* The abstract base class for all streams. */
+struct uv_stream_s {
+ UV_HANDLE_FIELDS
+ UV_STREAM_FIELDS
+};
+
+/* This call is used in conjunction with uv_listen() to accept incoming
+ * connections. Call uv_accept after receiving a uv_connection_cb to accept
+ * the connection. Before calling uv_accept use uv_*_init() must be
+ * called on the client. Non-zero return value indicates an error.
+ *
+ * When the uv_connection_cb is called it is guaranteed that uv_accept will
+ * complete successfully the first time. If you attempt to use it more than
+ * once, it may fail. It is suggested to only call uv_accept once per
+ * uv_connection_cb call.
+ */
+int uv_accept(uv_handle_t* server, uv_stream_t* client);
+
+/* Read data from an incoming stream. The callback will be made several
+ * several times until there is no more data to read or uv_read_stop is
+ * called. When we've reached EOF nread will be set to -1 and the error is
+ * set to UV_EOF. When nread == -1 the buf parameter might not point to a
+ * valid buffer; in that case buf.len and buf.base are both set to 0.
+ * Note that nread might also be 0, which does *not* indicate an error or
+ * eof; it happens when libuv requested a buffer through the alloc callback
+ * but then decided that it didn't need that buffer.
+ */
+int uv_read_start(uv_stream_t*, uv_alloc_cb alloc_cb, uv_read_cb read_cb);
+
+int uv_read_stop(uv_stream_t*);
+
+/* Write data to stream. Buffers are written in order. Example:
+ *
+ * uv_buf_t a[] = {
+ * { .base = "1", .len = 1 },
+ * { .base = "2", .len = 1 }
+ * };
+ *
+ * uv_buf_t b[] = {
+ * { .base = "3", .len = 1 },
+ * { .base = "4", .len = 1 }
+ * };
+ *
+ * // writes "1234"
+ * uv_write(req, a, 2);
+ * uv_write(req, b, 2);
+ *
+ */
+int uv_write(uv_req_t* req, uv_buf_t bufs[], int bufcnt);
+
+
+/*
+ * A subclass of uv_stream_t representing a TCP stream or TCP server. In the
+ * future this will probably be split into two classes - one a stream and
+ * the other a server.
+ */
+struct uv_tcp_s {
+ UV_HANDLE_FIELDS
+ UV_STREAM_FIELDS
+ UV_TCP_PRIVATE_FIELDS
+};
+
+int uv_tcp_init(uv_tcp_t* handle);
+
+int uv_tcp_bind(uv_tcp_t* handle, struct sockaddr_in);
+int uv_tcp_bind6(uv_tcp_t* handle, struct sockaddr_in6);
+
+int uv_tcp_connect(uv_req_t* req, struct sockaddr_in);
+int uv_tcp_connect6(uv_req_t* req, struct sockaddr_in6);
+
+int uv_tcp_listen(uv_tcp_t* handle, int backlog, uv_connection_cb cb);
+
+
+/*
+ * Subclass of uv_handle_t. libev wrapper. Every active prepare handle gets
+ * its callback called exactly once per loop iteration, just before the
+ * system blocks to wait for completed i/o.
+ */
+struct uv_prepare_s {
+ UV_HANDLE_FIELDS
+ UV_PREPARE_PRIVATE_FIELDS
+};
+
+int uv_prepare_init(uv_prepare_t* prepare);
+
+int uv_prepare_start(uv_prepare_t* prepare, uv_prepare_cb cb);
+
+int uv_prepare_stop(uv_prepare_t* prepare);
+
+
+/*
+ * Subclass of uv_handle_t. libev wrapper. Every active check handle gets
+ * its callback called exactly once per loop iteration, just after the
+ * system returns from blocking.
+ */
+struct uv_check_s {
+ UV_HANDLE_FIELDS
+ UV_CHECK_PRIVATE_FIELDS
+};
+
+int uv_check_init(uv_check_t* check);
+
+int uv_check_start(uv_check_t* check, uv_check_cb cb);
+
+int uv_check_stop(uv_check_t* check);
+
+
+/*
+ * Subclass of uv_handle_t. libev wrapper. Every active idle handle gets its
+ * callback called repeatedly until it is stopped. This happens after all
+ * other types of callbacks are processed. When there are multiple "idle"
+ * handles active, their callbacks are called in turn.
+ */
+struct uv_idle_s {
+ UV_HANDLE_FIELDS
+ UV_IDLE_PRIVATE_FIELDS
+};
+
+int uv_idle_init(uv_idle_t* idle);
+
+int uv_idle_start(uv_idle_t* idle, uv_idle_cb cb);
+
+int uv_idle_stop(uv_idle_t* idle);
+
+
+/*
+ * Subclass of uv_handle_t. libev wrapper. uv_async_send wakes up the event
+ * loop and calls the async handle's callback There is no guarantee that
+ * every uv_async_send call leads to exactly one invocation of the callback;
+ * The only guarantee is that the callback function is called at least once
+ * after the call to async_send. Unlike all other libuv functions,
+ * uv_async_send can be called from another thread.
+ */
+struct uv_async_s {
+ UV_HANDLE_FIELDS
+ UV_ASYNC_PRIVATE_FIELDS
+};
+
+int uv_async_init(uv_async_t* async, uv_async_cb async_cb);
+
+int uv_async_send(uv_async_t* async);
+
+
+/*
+ * Subclass of uv_handle_t. Wraps libev's ev_timer watcher. Used to get
+ * woken up at a specified time in the future.
+ */
+struct uv_timer_s {
+ UV_HANDLE_FIELDS
+ UV_TIMER_PRIVATE_FIELDS
+};
+
+int uv_timer_init(uv_timer_t* timer);
+
+int uv_timer_start(uv_timer_t* timer, uv_timer_cb cb, int64_t timeout, int64_t repeat);
+
+int uv_timer_stop(uv_timer_t* timer);
+
+/*
+ * Stop the timer, and if it is repeating restart it using the repeat value
+ * as the timeout. If the timer has never been started before it returns -1 and
+ * sets the error to UV_EINVAL.
+ */
+int uv_timer_again(uv_timer_t* timer);
+
+/*
+ * Set the repeat value. Note that if the repeat value is set from a timer
+ * callback it does not immediately take effect. If the timer was nonrepeating
+ * before, it will have been stopped. If it was repeating, then the old repeat
+ * value will have been used to schedule the next timeout.
+ */
+void uv_timer_set_repeat(uv_timer_t* timer, int64_t repeat);
+
+int64_t uv_timer_get_repeat(uv_timer_t* timer);
+
+
+/* c-ares integration initialize and terminate */
+int uv_ares_init_options(ares_channel *channelptr,
+ struct ares_options *options,
+ int optmask);
+
+void uv_ares_destroy(ares_channel channel);
+
+
+/*
+ * Subclass of uv_handle_t. Used for integration of getaddrinfo.
+ */
+struct uv_getaddrinfo_s {
+ UV_HANDLE_FIELDS
+ UV_GETADDRINFO_PRIVATE_FIELDS
+};
+
+
+/* uv_getaddrinfo
+ * return code of UV_OK means that request is accepted,
+ * and callback will be called with result.
+ * Other return codes mean that there will not be a callback.
+ * Input arguments may be released after return from this call.
+ * Callback must not call freeaddrinfo
+ */
+ int uv_getaddrinfo(uv_getaddrinfo_t* handle,
+ uv_getaddrinfo_cb getaddrinfo_cb,
+ const char* node,
+ const char* service,
+ const struct addrinfo* hints);
+
+
+/*
+ * Most functions return boolean: 0 for success and -1 for failure.
+ * On error the user should then call uv_last_error() to determine
+ * the error code.
+ */
+uv_err_t uv_last_error();
+char* uv_strerror(uv_err_t err);
+const char* uv_err_name(uv_err_t err);
+
+void uv_init();
+int uv_run();
+
+/*
+ * Manually modify the event loop's reference count. Useful if the user wants
+ * to have a handle or timeout that doesn't keep the loop alive.
+ */
+void uv_ref();
+void uv_unref();
+
+void uv_update_time();
+int64_t uv_now();
+
+
+/* Utility */
+struct sockaddr_in uv_ip4_addr(const char* ip, int port);
+struct sockaddr_in6 uv_ip6_addr(const char* ip, int port);
+
+/* Gets the executable path */
+int uv_exepath(char* buffer, size_t* size);
+
+/*
+ * Returns the current high-resolution real time. This is expressed in
+ * nanoseconds. It is relative to an arbitrary time in the past. It is not
+ * related to the time of day and therefore not subject to clock drift. The
+ * primary use is for measuring performance between intervals.
+ *
+ * Note not every platform can support nanosecond resolution; however, this
+ * value will always be in nanoseconds.
+ */
+extern uint64_t uv_hrtime(void);
+
+
+/* the presence of this union forces similar struct layout */
+union uv_any_handle {
+ uv_tcp_t tcp;
+ uv_prepare_t prepare;
+ uv_check_t check;
+ uv_idle_t idle;
+ uv_async_t async;
+ uv_timer_t timer;
+ uv_getaddrinfo_t getaddrinfo;
+};
+
+/* Diagnostic counters */
+typedef struct {
+ uint64_t req_init;
+ uint64_t handle_init;
+ uint64_t tcp_init;
+ uint64_t prepare_init;
+ uint64_t check_init;
+ uint64_t idle_init;
+ uint64_t async_init;
+ uint64_t timer_init;
+} uv_counters_t;
+
+uv_counters_t* uv_counters();
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* UV_H */
--- /dev/null
+c-ares is based on ares, and these are the people that have worked on it since
+the fork was made:
+
+Alexander Lazic
+Alexey Simak
+Andreas Rieke
+Ashish Sharma
+Brad House
+Brad Spencer
+Bram Matthys
+Dan Fandrich
+Daniel Stenberg
+Dirk Manske
+Dominick Meglio
+Doug Goldstein
+Duncan Wilcox
+Eino Tuominen
+Erik Kline
+George Neill
+Gisle Vanem
+Guilherme Balena Versiani
+Gunter Knauf
+Henrik Stoerner
+James Bursa
+Michael Wallner
+Nick Mathewson
+Phil Blundell
+Ravi Pratap
+Robin Cornelius
+Sebastian at basti79.de
+Shmulik Regev
+Steinar H. Gunderson
+Tofu Linden
+Vlad Dinulescu
+William Ahern
+Yang Tse
+liren at vivisimo.com
--- /dev/null
+ Changelog for the c-ares project
+
+Version 1.7.4 (December 9, 2010)
+
+Changed:
+
+ o local-bind: Support binding to local interface/IPs, see
+ ares_set_local_ip4, ares_set_local_ip6, ares_set_local_dev
+
+Fixed:
+
+ o memory leak in ares_getnameinfo
+ o add missing break that caused get_ares_servers to fail
+ o ares_parse_a_reply: fix CNAME response parsing
+ o init_by_options: don't copy an empty sortlist
+ o Replaced uint32_t with unsigned int to fix broken builds
+ on a couple of platforms
+ o Fix lookup with HOSTALIASES set
+ o adig: fix NAPTR parsing
+ o compiler warning cleanups
+
+Version 1.7.3 (June 11, 2010)
+
+Fixed:
+
+ o builds on Android
+ o now includes all files necessary to build it (1.7.2 lacked a file)
+
+Version 1.7.2 (June 10, 2010)
+
+Changed:
+
+ o Added ares_parse_mx_reply()
+
+Fixed:
+
+ o ares_init: Last, not first instance of domain or search should win
+ o improve alternative definition of bool
+ o fix VS2010 compiler warnings
+
+
+Version 1.7.1 (Mar 23, 2010)
+
+* May 31, 2010 (Jakub Hrozek)
+- Use the last instance of domain/search, not the first one
+
+* March 23, 2010 (Daniel Stenberg)
+- We switched from CVS to git. See http://github.com/bagder/c-ares
+
+* March 5, 2010 (Daniel Stenberg)
+- Daniel Johnson provided fixes for building with the clang compiler.
+
+* March 5, 2010 (Yang Tse)
+- Added IPv6 name servers support. Implementation has been based on code,
+ comments and feedback provided November and December of 2008 by Daniel
+ Stenberg, Gregor Jasny, Phil Blundell and myself, December 2009 by Cedric
+ Bail, and February 2010 by Jakub Hrozek on the c-ares mailing list. On
+ March I reviewed all that, selected the best of each, and adjusted or
+ extended parts of it to make the best fit.
+
+ The external and visible result of all this is that two new functions are
+ added to the external API, ares_get_servers() and ares_set_servers(), which
+ becomes now the preferred way of getting and setting name servers for any
+ ares channel as these support both IPv4 and IPv6 name servers.
+
+ In order to not break ABI compatibility, ares_init_options() with option
+ mask ARES_OPT_SERVERS and ares_save_options() may still be used in code
+ which is intended to run on IPv4-only stacks. But remember that these
+ functions do not support IPv6 name servers. This implies that if the user
+ is capable of defining or providing an IPv6 name server, and the app is
+ using ares_init_options() or ares_save_options() at some point to handle
+ the name servers, the app will likely lose IPv6 name servers.
+
+* January 28, 2010 (Daniel Stenberg)
+- Tommie Gannert pointed out a silly bug in ares_process_fd() since it didn't
+ check for broken connections like ares_process() did. Based on that, I
+ merged the two functions into a single generic one with two front-ends.
+
+* December 29, 2009 (Yang Tse)
+- Laszlo Tamas Szabo adjusted Makefile.msvc compiler options so that where
+ run-time error checks enabling compiler option /GZ was used it is replaced
+ with equivalent /RTCsu for Visual Studio 2003 and newer versions. Option
+ /GX is replaced with equivalent /EHsc for all versions. Also fixed socket
+ data type for internal configure_socket function.
+
+* December 21, 2009 (Yang Tse)
+- Ingmar Runge noticed that Windows config-win32.h configuration file
+ did not include a definition for HAVE_CLOSESOCKET which resulted in
+ function close() being inappropriately used to close sockets.
+
+Version 1.7.0 (Nov 30, 2009)
+
+* November 26, 2009 (Yang Tse)
+- Larry Lansing fixed ares_parse_srv_reply to properly parse replies
+ which might contain non-SRV answers, skipping over potential non-SRV
+ ones such as CNAMEs.
+
+* November 23, 2009 (Yang Tse)
+- Changed naming convention for c-ares libraries built with MSVC, details
+ and build instructions provided in README.msvc file.
+
+* November 22, 2009 (Yang Tse)
+- Jakub Hrozek fixed more function prototypes in man pages to sync them
+ with the ones declared in ares.h
+
+- Jakub Hrozek renamed addrttl and addr6ttl structs to ares_addrttl and
+ ares_addr6ttl in order to prevent name space pollution, along with
+ necessary changes to code base and man pages.This change does not break
+ ABI, there is no need to recompile existing applications. But existing
+ applications using these structs with the old name will need source code
+ adjustments when recompiled using c-ares 1.7.0.
+
+* November 21, 2009 (Yang Tse)
+- Added manifest stuff to Makefile.msvc.
+
+* November 20, 2009 (Yang Tse)
+- Fixed several function prototypes in man pages that were out of sync
+ with the ones declared in ares.h. Added ares_free_data() along with
+ man page. Updated ares_parse_srv_reply() and ares_parse_txt_reply()
+ with changes from Jakub Hrozek making these now return linked lists
+ instead of arrays, and merging the ares_free_data() adjustments.
+
+* November 10, 2009 (Yang Tse)
+- Updated MSVC 6.0 project files to match settings from Makefile.msvc.
+
+* November 9, 2009 (Yang Tse)
+- Makefile.msvc is now the reference method to build c-ares and sample
+ programs with any MSVC compiler or MS Visual Studio version. If no
+ option or target are specified it builds dynamic and static c-ares
+ libraries in debug and release flavours and also builds all sample
+ programs using each of the different c-ares libraries.
+
+* November 2, 2009 (Yang Tse)
+- Renamed c-ares setup.h to ares_setup.h
+
+* October 31, 2009 (Yang Tse)
+- Symbol hiding configure options are named now --enable-symbol-hiding
+ and --disable-symbol-hiding in an attempt to make them less ambiguous.
+
+* October 30, 2009 (Yang Tse)
+- Many fixes for ares_parse_txt_reply()
+
+* October 29, 2009 (Daniel Stenberg)
+- Jakub Hrozek added ares_parse_txt_reply() for TXT parsing
+
+* October 29, 2009 (Yang Tse)
+- Updated MSVC 6.0 workspace and project files that allows building
+ dynamic and static c-ares libraries in debug and release flavours.
+ Additionally each of the three sample programs is built against
+ each of the four possible c-ares libraries, generating all this
+ a total number of 12 executables and 4 libraries.
+
+* October 28, 2009 (Yang Tse)
+- Initial step towards the ability to reduce c-ares exported symbols
+ when built as a shared library based on the 'visibility' attribute
+ for GNUC and Intel compilers and based on __global for Sun compilers,
+ taking also in account __declspec function decoration for Win32 and
+ Symbian DLL's.
+
+* October 27, 2009 (Yang Tse)
+- Fixed Pelles C Win32 target compilation issues.
+
+* October 23, 2009 (Yang Tse)
+- John Engelhart noticed an unreleased problem relative to a duplicate
+ ARES_ECANCELLED error code value and missing error code description.
+
+* October 7, 2009 (Yang Tse)
+- Overhauled ares__get_hostent() Fixing out of bounds memory overwrite
+ triggered with malformed /etc/hosts file. Improving parsing of /etc/hosts
+ file. Validating requested address family. Ensuring that failures always
+ return a NULL pointer. Adjusting header inclusions.
+
+* October 6, 2009 (Yang Tse)
+- Fix ssize_t redefinition errors on WIN64 reported by Alexey Simak.
+
+* September 29, 2009 (Yang Tse)
+- Make configure script also check if _REENTRANT definition is required to
+ make errno available as a preprocessor macro.
+
+* September 7, 2009 (Yang Tse)
+- Add T_SRV portability check to ares_parse_srv_reply.c
+
+* 4 Sep 2009 (Daniel Stenberg)
+- Jakub Hrozek added ares_parse_srv_reply() for SRV parsing
+
+* 3 Aug 2009 (Daniel Stenberg)
+- Joshua Kwan fixed the init routine to fill in the defaults for stuff that
+ fails to get inited by other means. This fixes a case of when the c-ares
+ init fails when internet access is fone.
+
+- Timo Teras changed the reason code used in the resolve callback done when
+ ares_cancel() is used, to be ARES_ECANCELLED instead of ARES_ETIMEOUT to
+ better allow the callback to know what's happening.
+
+* 14 Jul 2009 (Guenter Knauf)
+- renamed generated config.h to ares_config.h to avoid any future clashes
+ with config.h from other projects.
+
+* June 20 2009 (Yang Tse)
+- Refactor how libraries are checked for connect() function in configure
+ script and check for connect() as it is done for other functions.
+
+* June 19 2009 (Yang Tse)
+- Make sclose() function-like macro definition used to close a socket,
+ now solely based on HAVE_CLOSESOCKET and HAVE_CLOSESOCKET_CAMEL
+ config file preprocessor definitions
+
+* June 18 2009 (Yang Tse)
+- Add CloseSocket camel case function check for configure script.
+
+* June 17 2009 (Yang Tse)
+- Check for socket() and closesocket() as it is done for other functions
+ in configure script.
+
+* June 11 2009 (Yang Tse)
+- Modified buildconf so that when automake runs it copies missing files
+ instead of symlinking them.
+
+* June 8 2009 (Yang Tse)
+- Removed buildconf.bat from release and daily snapshot archives. This
+ file is only for CVS tree checkout builds.
+
+* May 26 2009 (Yang Tse)
+- Added --enable-curldebug configure option to enable and disable building
+ with the low-level curl debug memory tracking 'feature' to allow decoupled
+ setting from --enable-debug, allowing again to build c-ares independently
+ out of the CVS tree.
+
+ For the c-ares library option --enable-debug enables debug build features
+ which are _not_ related with memory tracking. For the c-ares library when
+ --enable-debug is given it does not enable the memory tracking feature. If
+ you wish to enable the curl debug memory tracking you must use configure
+ option --enable-curldebug explicitily to do so.
+
+ Internally, definition of preprocessor symbol DEBUGBUILD restricts code
+ which is only compiled for debug enabled builds. And symbol CURLDEBUG is
+ used to differentiate code which is _only_ used for memory tracking.
+
+ Make ares_init(), ares_dup() and ares_init_options() fail returning
+ ARES_ENOTINITIALIZED if library initialization has not been performed
+ calling ares_library_init().
+
+* May 20 2009 (Yang Tse)
+- Added ares_library_init() and ares_library_cleanup() man pages.
+
+* May 19 2009 (Yang Tse)
+- Introduced ares_library_init() and ares_library_cleanup() functions.
+
+ This is an API and ABI break for Win32/64 systems. Non-Win32/64 build targets
+ using c-ares 1.7.0 can still survive without calling these functions. Read all
+ the details on ares_library_init(3) and ares_library_cleanup(3) man pages that
+ are included.
+
+ curl/libcurl 7.19.5 is fully compatible with c-ares 1.7.0 on all systems.
+
+ In order to use c-ares 1.7.0 with curl/libcurl on Win32/64 systems it is
+ required that curl/libcurl is 7.19.5 or newer. In other words, it is not
+ possible on Win32/64 to use c-ares 1.7.0 with a curl/libcurl version less
+ than 7.19.5
+
+* May 11 2009 (Daniel Stenberg)
+- Gregor Jasny made c-ares link with libtool 's -export-symbols-regex option to
+ only expose functions starting with ares_.
+
+* May 7 2009 (Yang Tse)
+- Fix an m4 overquoting triggering a spurious 'AS_TR_CPP' symbol definition
+ attempt in generated config.h
+
+* May 2 2009 (Yang Tse)
+- Use a build-time configured ares_socklen_t data type instead of socklen_t.
+
+* April 21 2009 (Yang Tse)
+- Moved potential inclusion of system's malloc.h and memory.h header files to
+ setup_once.h. Inclusion of each header file is based on the definition of
+ NEED_MALLOC_H and NEED_MEMORY_H respectively.
+
+* March 11 2009 (Yang Tse)
+- Japheth Cleaver fixed acountry.c replacing u_long with unsigned long.
+
+* February 20 2009 (Yang Tse)
+- Do not halt compilation when using VS2008 to build a Windows 2000 target.
+
+* February 3 2009 (Phil Blundell)
+- If the server returns garbage or nothing at all in response to an AAAA query,
+ go on and ask for A records anyway.
+
+* January 31 2009 (Daniel Stenberg)
+- ares_gethostbyname() now accepts 'AF_UNSPEC' as a family for resolving
+ either AF_INET6 or AF_INET. It works by accepting any of the looksups in the
+ hosts file, and it resolves the AAAA field with a fallback to A.
+
+* January 14 2009 (Daniel Stenberg)
+- ares.h no longer uses the HAVE_STRUCT_IN6_ADDR define check, but instead it
+ now declares the private struct ares_in6_addr for all systems instead of
+ relying on one possibly not present in the system.
+
+* January 13 2009 (Phil Blundell)
+- ares__send_query() now varies the retry timeout pseudo-randomly to avoid
+ packet storms when several queries were started at the same time.
+
+* January 11 2009 (Daniel Stenberg)
+- Phil Blundell added the internal function ares__expand_name_for_response()
+ that is now used by the ares_parse_*_reply() functions instead of the
+ ares_expand_name() simply to easier return ARES_EBADRESP for the cases where
+ the name expansion fails as in responses that really isn't expected.
+
+Version 1.6.0 (Dec 9, 2008)
+
+* December 9 2008 (Gisle Vanem)
+
+ Fixes for Win32 targets using the Watt-32 tcp/ip stack.
+
+* Dec 4 2008 (Daniel Stenberg)
+
+ Gregor Jasny provided the patch that introduces ares_set_socket_callback(),
+ and I edited it to also get duped by ares_dup().
+
+* Dec 3 2008 (Daniel Stenberg)
+
+ API changes:
+
+ I made sure the public ares_config struct looks like before and yet it
+ supports the ROTATE option thanks to c-ares now storing the "optmask"
+ internally. Thus we should be ABI compatible with the past release(s)
+ now. My efforts mentioned below should not break backwards ABI compliance.
+
+ Here's how I suggest we proceed with the API:
+
+ ares_init() will be primary "channel creator" function.
+
+ ares_init_options() will continue to work exactly like now and before. For
+ starters, it will be the (only) way to set the existing options.
+
+ ares_save_options() will continue to work like today, but will ONLY save
+ options that you can set today (including ARES_OPT_ROTATE actually) but new
+ options that we add may not be saved with this.
+
+ Instead we introduce:
+
+ ares_dup() that instead can make a new channel and clone the config used
+ from an existing channel. It will then clone all config options, including
+ future new things we add.
+
+ ares_set_*() style functions that set (new) config options. As a start we
+ simply add these for new functionality, but over time we can also introduce
+ them for existing "struct ares_options" so that we can eventually deprecate
+ the two ares_*_options() functions.
+
+ ares_get_*() style functions for extracting info from a channel handle that
+ should be used instead of ares_save_options().
+
+* Nov 26 2008 (Yang Tse)
+- Brad Spencer provided changes to allow buildconf to work on OS X.
+
+- Gerald Combs fixed a bug in ares_parse_ptr_reply() which would cause a
+ buffer to shrink instead of expand if a reply contained 8 or more records.
+
+* Nov 25 2008 (Yang Tse)
+- In preparation for the upcomming IPv6 nameservers patch, the internal
+ ares_addr union is now changed into an internal struct which also holds
+ the address family.
+
+* Nov 19 2008 (Daniel Stenberg)
+- Brad Spencer brought the new function ares_gethostbyname_file() which simply
+ resolves a host name from the given file, using the regular hosts syntax.
+
+* Nov 1 2008 (Daniel Stenberg)
+- Carlo Contavalli added support for the glibc "rotate" option, as documented
+ in man resolv.conf:
+
+ causes round robin selection of nameservers from among those listed. This
+ has the effect of spreading the query load among all listed servers, rather
+ than having all clients try the first listed server first every time.
+
+ You can enable it with ARES_OPT_ROTATE
+
+* Oct 21 2008 (Yang Tse)
+ Charles Hardin added handling of EINPROGRESS for UDP connects.
+
+* Oct 18 2008 (Daniel Stenberg)
+ Charles Hardin made adig support a regular numerical dotted IP address for the
+ -s option as well.
+
+* Oct 7 2008 (Yang Tse)
+- Added --enable-optimize configure option to enable and disable compiler
+ optimizations to allow decoupled setting from --enable-debug.
+
+* Oct 2 2008 (Yang Tse)
+- Added --enable-warnings configure option to enable and disable strict
+ compiler warnings to allow decoupled setting from --enable-debug.
+
+* Sep 17 2008 (Yang Tse)
+- Code reorganization to allow internal/private use of "nameser.h" to any
+ system that lacks arpa/nameser.h or arpa/nameser_compat.h header files.
+
+* Sep 16 2008 (Yang Tse)
+- Code reorganization to allow internal/private use of ares_writev to any
+ system that lacks the writev function.
+
+* Sep 15 2008 (Yang Tse)
+- Code reorganization to allow internal/private use of ares_strcasecmp to any
+ system that lacks the strcasecmp function.
+
+- Improve configure detection of some string functions.
+
+* Sep 11 2008 (Yang Tse)
+- Code reorganization to allow internal/private use of ares_strdup to any
+ system that lacks the strdup function.
+
+Version 1.5.3 (Aug 29, 2008)
+
+* Aug 25 2008 (Yang Tse)
+- Improvement by Brad House:
+
+ This patch addresses an issue in which a response could be sent back to the
+ source port of a client from a different address than the request was made to.
+ This is one form of a DNS cache poisoning attack.
+
+ The patch simply uses recvfrom() rather than recv() and validates that the
+ address returned from recvfrom() matches the address of the server we have
+ connected to. Only necessary on UDP sockets as they are connection-less, TCP
+ is unaffected.
+
+- Fix by George Neill:
+ Fixed compilation of acountry sample application failure on some systems.
+
+* Aug 4 2008 (Daniel Stenberg)
+- Fix by Tofu Linden:
+
+ The symptom:
+ * Users (usually, but not always) on 2-Wire routers and the Comcast service
+ and a wired connection to their router would find that the second and
+ subsequent DNS lookups from fresh processes using c-ares to resolve the same
+ address would cause the process to never see a reply (it keeps polling for
+ around 1m15s before giving up).
+
+ The repro:
+ * On such a machine (and yeah, it took us a lot of QA to find the systems
+ that reproduce such a specific problem!), do 'ahost www.secondlife.com',
+ then do it again. The first process's lookup will work, subsequent lookups
+ will time-out and fail.
+
+ The cause:
+ * init_id_key() was calling randomize_key() *before* it initialized
+ key->state, meaning that the randomness generated by randomize_key() is
+ immediately overwritten with deterministic values. (/dev/urandom was also
+ being read incorrectly in the c-ares version we were using, but this was
+ fixed in a later version.)
+ * This makes the stream of generated query-IDs from any new c-ares process
+ be an identical and predictable sequence of IDs.
+ * This makes the 2-Wire's default built-in DNS server detect these queries
+ as probable-duplicates and (erroneously) not respond at all.
+
+
+* Aug 4 2008 (Yang Tse)
+- Autoconf 2.62 has changed the behaviour of the AC_AIX macro which we use.
+ Prior versions of autoconf defined _ALL_SOURCE if _AIX was defined. 2.62
+ version of AC_AIX defines _ALL_SOURCE and other four preprocessor symbols
+ no matter if the system is AIX or not. To keep the traditional behaviour,
+ and an uniform one across autoconf versions AC_AIX is replaced with our
+ own internal macro CARES_CHECK_AIX_ALL_SOURCE.
+
+* Aug 1 2008 (Yang Tse)
+- Configure process now checks if the preprocessor _REENTRANT symbol is already
+ defined. If it isn't currently defined a set of checks are performed to test
+ if its definition is required to make visible to the compiler a set of *_r
+ functions. Finally, if _REENTRANT is already defined or needed it takes care
+ of making adjustments necessary to ensure that it is defined equally for the
+ configure process tests and generated config file.
+
+* Jul 20 2008 (Yang Tse)
+- When recvfrom prototype uses a void pointer for arguments 2, 5 or 6 this will
+ now cause the definition, as appropriate, of RECVFROM_TYPE_ARG2_IS_VOID,
+ RECVFROM_TYPE_ARG5_IS_VOID or RECVFROM_TYPE_ARG6_IS_VOID.
+
+* Jul 17 2008 (Yang Tse)
+- RECVFROM_TYPE_ARG2, RECVFROM_TYPE_ARG5 and RECVFROM_TYPE_ARG6 are now defined
+ to the data type pointed by its respective argument and not the pointer type.
+
+* Jul 16 2008 (Yang Tse)
+- Improved configure detection of number of arguments for getservbyport_r.
+ Detection is now based on compilation checks instead of linker ones.
+
+- Configure process now checks availability of recvfrom() socket function and
+ finds out its return type and the types of its arguments. Added definitions
+ for non-configure systems config files, and introduced macro sreadfrom which
+ will be used on udp sockets as a recvfrom() wrapper in the future.
+
+* Jul 15 2008 (Yang Tse)
+- Introduce definition of _REENTRANT symbol in setup.h to improve library
+ usability. Previously the configure process only used the AC_SYS_LARGEFILE
+ macro for debug builds, now it is also used for non-debug ones enabling the
+ use of configure options --enable-largefile and --disable-largefile which
+ might be needed for library compatibility. Remove checking the size of
+ curl_off_t, it is no longer needed.
+
+* Jul 3 2008 (Daniel Stenberg)
+- Phil Blundell: If you ask ares_gethostbyname() to do an AF_INET6 lookup and
+ the target host has only A records, it automatically falls back to an
+ AF_INET lookup and gives you the A results. However, if the target host has
+ a CNAME record, this behaviour is defeated since the original query does
+ return some data even though ares_parse_aaa_reply() doesn't consider it
+ relevant. Here's a small patch to make it behave the same with and without
+ the CNAME.
+
+* Jul 2 2008 (Yang Tse)
+- Fallback to gettimeofday when monotonic clock is unavailable at run-time.
+
+* Jun 30 2008 (Daniel Stenberg)
+
+- As was pointed out to me by Andreas Schuldei, the MAXHOSTNAMELEN define is
+ not posix or anything and thus c-ares failed to build on hurd (and possibly
+ elsewhere). The define was also somewhat artificially used in the windows
+ port. Now, I instead rewrote the use of gethostbyname to enlarge the host
+ name buffer in case of need and totally avoid the use of the MAXHOSTNAMELEN
+ define. I thus also removed the defien from the namser.h file where it was
+ once added for the windows build.
+
+ I also fixed init_by_defaults() function to not leak memory in case if
+ error.
+
+* Jun 9 2008 (Yang Tse)
+
+- Make libcares.pc generated file for pkg-config include information relative
+ to the libraries needed for the static linking of c-ares.
+
+* May 30 2008 (Yang Tse)
+
+- Brad House fixed a missing header file inclusion in adig sample program.
+
+Version 1.5.2 (May 29, 2008)
+
+* May 13 2008 (Daniel Stenberg)
+
+- Introducing millisecond resolution support for the timeout option. See
+ ares_init_options()'s ARES_OPT_TIMEOUTMS.
+
+* May 9 2008 (Yang Tse)
+
+- Use monotonic time source if available, for private function ares__tvnow()
+
+* May 7 2008 (Daniel Stenberg)
+
+- Sebastian made c-ares able to return all PTR-records when doing reverse
+ lookups. It is not common practice to have multiple PTR-Records for a single
+ IP, but its perfectly legal and some sites have those.
+
+- Doug Goldstein provided a configure patch: updates autoconf 2.13 usage to
+ autoconf 2.57 usage (which is the version you have specified as the minimum
+ version). It's a minor change but it does clean up some warnings with newer
+ autoconf (specifically 2.62).
+
+* May 5 2008 (Yang Tse)
+
+- Improved parsing of resolver configuration files.
+
+* April 4 2008 (Daniel Stenberg)
+
+- Eino Tuominen improved the code when a file is used to seed the randomizer.
+
+- Alexey Simak made adig support NAPTR records
+
+- Alexey Simak fixed the VC dsp file by adding the missing source file
+ ares_expand_string.c
+
+* December 11 2007 (Gisle Vanem)
+
+- Added another sample application; acountry.c which converts an
+ IPv4-address(es) and/or host-name(s) to country-name and country-code.
+ This uses the service of the DNSBL at countries.nerd.dk.
+
+* December 3 2007 (Daniel Stenberg)
+
+- Brad Spencer fixed the configure script to assume that there's no
+ /dev/urandom when built cross-compiled as then the script cannot check for
+ it.
+
+- Erik Kline cleaned up ares_gethostbyaddr.c:next_lookup() somewhat
+
+Version 1.5.1 (Nov 21, 2007)
+
+* November 21 2007 (Daniel Stenberg)
+
+- Robin Cornelius pointed out that ares_llist.h was missing in the release
+ archive for 1.5.0
+
+Version 1.5.0 (Nov 21, 2007)
+
+* October 2 2007 (Daniel Stenberg)
+
+- ares_strerror() segfaulted if the input error number was out of the currently
+ supported range.
+
+- Yang Tse: Avoid a segfault when generating a DNS "Transaction ID" in
+ internal function init_id_key() under low memory conditions.
+
+* September 28 2007 (Daniel Stenberg)
+
+- Bumped version to 1.5.0 for next release and soname bumped to 2 due to ABI
+ and API changes in the progress callback (and possibly more coming up from
+ Steinar)
+
+* September 28 2007 (Steinar H. Gunderson)
+
+- Don't skip a server if it's the only one. (Bugfix from the Google tree.)
+
+- Made the query callbacks receive the number of timeouts that happened during
+ the execution of a query, and updated documentation accordingly. (Patch from
+ the Google tree.)
+
+- Support a few more socket options: ARES_OPT_SOCK_SNDBUF and
+ ARES_OPT_SOCK_RCVBUF
+
+- Always register for TCP events even if there are no outstanding queries, as
+ the other side could always close the connection, which is a valid event
+ which should be responded to.
+
+* September 22 2007 (Daniel Stenberg)
+
+- Steinar H. Gunderson fixed: Correctly clear sockets from the fd_set on in
+ several functions (write_tcp_data, read_tcp_data, read_udp_packets) so that
+ if it fails and the socket is closed the following code doesn't try to use
+ the file descriptor.
+
+- Steinar H. Gunderson modified c-ares to now also do to DNS retries even when
+ TCP is used since there are several edge cases where it still makes sense.
+
+- Brad House provided a fix for ares_save_options():
+
+ Apparently I overlooked something with the ares_save_options() where it
+ would try to do a malloc(0) when no options of that type needed to be saved.
+ On most platforms, this was fine because malloc(0) doesn't actually return
+ NULL, but on AIX it does, so ares_save_options would return ARES_ENOMEM.
+
+* July 14 2007 (Daniel Stenberg)
+
+- Vlad Dinulescu fixed two outstanding valgrind reports:
+
+ 1. In ares_query.c , in find_query_by_id we compare q->qid (which is a short
+ int variable) with qid, which is declared as an int variable. Moreover,
+ DNS_HEADER_SET_QID is used to set the value of qid, but DNS_HEADER_SET_QID
+ sets only the first two bytes of qid. I think that qid should be declared as
+ "unsigned short" in this function.
+
+ 2. The same problem occurs in ares_process.c, process_answer() . query->qid
+ (an unsigned short integer variable) is compared with id, which is an
+ integer variable. Moreover, id is initialized from DNS_HEADER_QID which sets
+ only the first two bytes of id. I think that the id variable should be
+ declared as "unsigned short" in this function.
+
+ Even after declaring these variables as "unsigned short", the valgrind
+ errors are still there. Which brings us to the third problem.
+
+ 3. The third problem is that Valgrind assumes that query->qid is not
+ initialised correctly. And it does that because query->qid is set from
+ DNS_HEADER_QID(qbuf); Valgrind says that qbuf has unitialised bytes. And
+ qbuf has uninitialised bytes because of channel->next_id . And next_id is
+ set by ares_init.c:ares__generate_new_id() . I found that putting short r=0
+ in this function (instead of short r) makes all Valgrind warnings go away.
+ I have studied ares__rc4() too, and this is the offending line:
+
+ buffer_ptr[counter] ^= state[xorIndex]; (ares_query.c:62)
+
+ This is what triggers Valgrind.. buffer_ptr is unitialised in this function,
+ and by applying ^= on it, it remains unitialised.
+
+Version 1.4.0 (June 8, 2007)
+
+* June 4 2007 (Daniel Stenberg)
+
+- James Bursa reported a major memory problem when resolving multi-IP names
+ and I found and fixed the problem. It was added by Ashish Sharma's patch
+ two days ago.
+
+ When I then tried to verify multiple entries in /etc/hosts after my fix, I
+ got another segfault and decided this code was not ripe for inclusion and I
+ reverted the patch.
+
+* June 2 2007
+
+- Brad Spencer found and fixed three flaws in the code, found with the new
+ gcc 4.2.0 warning: -Waddress
+
+- Brad House fixed VS2005 compiler warnings due to time_t being 64bit.
+ He also made recent Microsoft compilers use _strdup() instead of strdup().
+
+- Brad House's man pages for ares_save_options() and ares_destroy_options()
+ were added.
+
+- Ashish Sharma provided a patch for supporting multiple entries in the
+ /etc/hosts file. Patch edited for coding style and functionality by me
+ (Daniel).
+
+* May 30 2007
+
+- Shmulik Regev brought cryptographically secure transaction IDs:
+
+ The c-ares library implementation uses a DNS "Transaction ID" field that is
+ seeded with a pseudo random number (based on gettimeofday) which is
+ incremented (++) between consecutive calls and is therefore rather
+ predictable. In general, predictability of DNS Transaction ID is a well
+ known security problem (e.g.
+ http://bak.spc.org/dms/archive/dns_id_attack.txt) and makes a c-ares based
+ implementation vulnerable to DNS poisoning. Credit goes to Amit Klein
+ (Trusteer) for identifying this problem.
+
+ The patch I wrote changes the implementation to use a more secure way of
+ generating unique IDs. It starts by obtaining a key with reasonable entropy
+ which is used with an RC4 stream to generate the cryptographically secure
+ transaction IDs.
+
+ Note that the key generation code (in ares_init:randomize_key) has two
+ versions, the Windows specific one uses a cryptographically safe function
+ provided (but undocumented :) by the operating system (described at
+ http://blogs.msdn.com/michael_howard/archive/2005/01/14/353379.aspx). The
+ default implementation is a bit naive and uses the standard 'rand'
+ function. Surely a better way to generate random keys exists for other
+ platforms.
+
+ The patch can be tested by using the adig utility and using the '-s' option.
+
+- Brad House added ares_save_options() and ares_destroy_options() that can be
+ used to keep options for later re-usal when ares_init_options() is used.
+
+ Problem: Calling ares_init() for each lookup can be unnecessarily resource
+ intensive. On windows, it must LoadLibrary() or search the registry
+ on each call to ares_init(). On unix, it must read and parse
+ multiple files to obtain the necessary configuration information. In
+ a single-threaded environment, it would make sense to only
+ ares_init() once, but in a heavily multi-threaded environment, it is
+ undesirable to ares_init() and ares_destroy() for each thread created
+ and track that.
+
+ Solution: Create ares_save_options() and ares_destroy_options() functions to
+ retrieve and free options obtained from an initialized channel. The
+ options populated can be used to pass back into ares_init_options(),
+ it should populate all needed fields and not retrieve any information
+ from the system. Probably wise to destroy the cache every minute or
+ so to prevent the data from becoming stale.
+
+- Daniel S added ares_process_fd() to allow applications to ask for processing
+ on specific sockets and thus avoiding select() and associated
+ functions/macros. This function will be used by upcoming libcurl releases
+ for this very reason. It also made me export the ares_socket_t type in the
+ public ares.h header file, since ares_process_fd() uses that type for two of
+ the arguments.
+
+* May 25 2007
+
+- Ravi Pratap fixed a flaw in the init_by_resolv_conf() function for windows
+ that could cause it to return a bad return code.
+
+* April 16 2007
+
+- Yang Tse: Provide ares_getopt() command-line parser function as a source
+ code helper function, not belonging to the actual c-ares library.
+
+* February 19 2007
+
+- Vlad Dinulescu added ares_parse_ns_reply().
+
+* February 13 2007
+
+- Yang Tse: Fix failure to get the search sequence of /etc/hosts and
+ DNS from /etc/nsswitch.conf, /etc/host.conf or /etc/svc.conf when
+ /etc/resolv.conf did not exist or was unable to read it.
+
+* November 22 2006
+
+- Install ares_dns.h too
+
+- Michael Wallner fixed this problem: When I set domains in the options
+ struct, and there are domain/search entries in /etc/resolv.conf, the domains
+ of the options struct will be overridden.
+
+* November 6 2006
+
+- Yang Tse removed a couple of potential zero size memory allocations.
+
+- Andreas Rieke fixed the line endings in the areslib.dsp file that I (Daniel)
+ broke in the 1.3.2 release. We should switch to a system where that file is
+ auto-generated. We could rip some code for that from curl...
+
+Version 1.3.2 (November 3, 2006)
+
+* October 12 2006
+
+- Prevent ares_getsock() to overflow if more than 16 sockets are used.
+
+* September 11 2006
+
+- Guilherme Balena Versiani: I noted a strange BUG in Win32 port
+ (ares_init.c/get_iphlpapi_dns_info() function): when I disable the network
+ by hand or disconnect the network cable in Windows 2000 or Windows XP, my
+ application gets 127.0.0.1 as the only name server. The problem comes from
+ 'GetNetworkParams' function, that returns the empty string "" as the only
+ name server in that case. Moreover, the Windows implementation of
+ inet_addr() returns INADDR_LOOPBACK instead of INADDR_NONE.
+
+* August 29 2006
+
+- Brad Spencer did
+
+ o made ares_version.h use extern "C" for c++ compilers
+ o fixed compiler warnings in ares_getnameinfo.c
+ o fixed a buffer position init for TCP reads
+
+* August 3 2006
+
+- Ravi Pratap fixed ares_getsock() to actually return the proper bitmap and
+ not always zero!
+
+Version 1.3.1 (June 24, 2006)
+
+* July 23, 2006
+
+- Gisle Vanem added getopt() to the ahost program. Currently accepts
+ only [-t {a|aaaa}] to specify address family in ares_gethostbyname().
+
+* June 19, 2006
+
+- (wahern) Removed "big endian" DNS section and RR data integer parser
+ macros from ares_dns.h, which break c-ares on my Sparc64. Bit-wise
+ operations in C operate on logical values. And in any event the octets are
+ already in big-endian (aka network) byte order so they're being reversed
+ (thus the source of the breakage).
+
+* June 18, 2006
+
+- William Ahern handles EAGAIN/EWOULDBLOCK errors in most of the I/O calls
+ from area_process.c.
+
+ TODO: Handle one last EAGAIN for a UDP socket send(2) in
+ ares__send_query().
+
+* May 10, 2006
+
+- Bram Matthys brought my attention to a libtool peculiarity where detecting
+ things such as C++ compiler actually is a bad thing and since we don't need
+ that detection I added a work-around, much inspired by a previous patch by
+ Paolo Bonzini. This also shortens the configure script quite a lot.
+
+* May 3, 2006
+
+- Nick Mathewson added the ARES_OPT_SOCK_STATE_CB option that when set makes
+ c-ares call a callback on socket state changes. A better way than the
+ ares_getsock() to get full control over the socket state.
+
+* January 9, 2006
+
+- Alexander Lazic improved the getservbyport_r() configure check.
+
+* January 6, 2006
+
+- Alexander Lazic pointed out that the buildconf should use the ACLOCAL_FLAGS
+ variable for easier controlling what it does and how it runs.
+
+* January 5, 2006
+
+- James Bursa fixed c-ares to find the hosts file on RISC OS, and made it
+ build with newer gcc versions that no longer defines "riscos".
+
+* December 22
+
+- Daniel Stenberg added ares_getsock() that extracts the set of sockets to
+ wait for action on. Similar to ares_fds() but not restricted to using
+ select() for the waiting.
+
+* November 25
+
+- Yang Tse fixed some send() / recv() compiler warnings
+
+* September 18
+
+- Added constants that will be used by ares_getaddrinfo
+
+- Made ares_getnameinfo use the reentrant getservbyport (getservbyport_r) if it
+ is available to ensure it works properly in a threaded environment.
+
+* September 10
+
+- configure fix for detecting a member in the sockaddr_in6 struct which failed
+ on ipv6-enabled HP-UX 11.00
+
+Version 1.3.0 (August 29, 2005)
+
+* August 21
+
+- Alfredo Tupone provided a fix for the Windows code in get_iphlpapi_dns_info()
+ when getting the DNS server etc.
+
+* June 19
+
+- Added some checks for the addrinfo structure.
+
+* June 2
+
+- William Ahern:
+
+ Make UDP sockets non-blocking. I've confirmed that at least on Linux 2.4 a
+ read event can come back from poll() on a valid SOCK_DGRAM socket but
+ recv(2) will still block. This patch doesn't ignore EAGAIN in
+ read_udp_packets(), though maybe it should. (This patch was edited by Daniel
+ Stenberg and a new configure test was added (imported from curl's configure)
+ to properly detect what non-blocking socket approach to use.)
+
+ I'm not quite sure how this was happening, but I've been seeing PTR queries
+ which seem to return empty responses. At least, they were empty when calling
+ ares_expand_name() on the record. Here's a patch which guarantees to
+ NUL-terminate the expanded name. The old behavior failed to NUL-terminate if
+ len was 0, and this was causing strlen() to run past the end of the buffer
+ after calling ares_expand_name() and getting ARES_SUCCESS as the return
+ value. If q is not greater than *s then it's equal and *s is always
+ allocated with at least one byte.
+
+* May 16
+
+- Added ares_getnameinfo which mimics the getnameinfo API (another feature
+ that could use testing).
+
+* May 14
+
+- Added an inet_ntop function from BIND for systems that do not have it.
+
+* April 9
+
+- Made sortlist support IPv6 (this can probably use some testing).
+
+- Made sortlist support CIDR matching for IPv4.
+
+* April 8
+
+- Added preliminary IPv6 support to ares_gethostbyname. Currently, sortlist
+ does not work with IPv6. Also provided an implementation of bitncmp from
+ BIND for systems that do not supply this function. This will be used to add
+ IPv6 support to sortlist.
+
+- Made ares_gethostbyaddr support IPv6 by specifying AF_INET6 as the family.
+ The function can lookup IPv6 addresses both from files (/etc/hosts) and
+ DNS lookups.
+
+* April 7
+
+- Tupone Alfredo fixed includes of arpa/nameser_compat.h to build fine on Mac
+ OS X.
+
+* April 5
+
+- Dominick Meglio: Provided implementations of inet_net_pton and inet_pton
+ from BIND for systems that do not include these functions.
+
+* March 11, 2005
+
+- Dominick Meglio added ares_parse_aaaa_reply.c and did various
+ adjustments. The first little steps towards IPv6 support!
+
+* November 7
+
+- Fixed the VC project and makefile to use ares_cancel and ares_version
+
+* October 24
+
+- The released ares_version.h from 1.2.1 says 1.2.0 due to a maketgz flaw.
+ This is now fixed.
+
+Version 1.2.1 (October 20, 2004)
+
+* September 29
+
+- Henrik Stoerner fix: got a report that Tru64 Unix (the unix from Digital
+ when they made Alpha's) uses /etc/svc.conf for the purpose fixed below for
+ other OSes. He made c-ares check for and understand it if present.
+
+- Now c-ares will use local host name lookup _before_ DNS resolving by default
+ if nothing else is told.
+
+* September 26
+
+- Henrik Stoerner: found out that c-ares does not look at the /etc/host.conf
+ file to determine the sequence in which to search /etc/hosts and DNS. So on
+ systems where this order is defined by /etc/host.conf instead of a "lookup"
+ entry in /etc/resolv.conf, c-ares will always default to looking in DNS
+ first, and /etc/hosts second.
+
+ c-ares now looks at
+
+ 1) resolv.conf (for the "lookup" line);
+ 2) nsswitch.fon (for the "hosts:" line);
+ 3) host.conf (for the "order" line).
+
+ First match wins.
+
+- Dominick Meglio patched: C-ares on Windows assumed that the HOSTS file is
+ located in a static location. It assumed
+ C:\Windows\System32\Drivers\Etc. This is a poor assumption to make. In fact,
+ the location of the HOSTS file can be changed via a registry setting.
+
+ There is a key called DatabasePath which specifies the path to the HOSTS
+ file:
+ http://www.microsoft.com/technet/itsolutions/network/deploy/depovg/tcpip2k.mspx
+
+ The patch will make c-ares correctly consult the registry for the location
+ of this file.
+
+* August 29
+
+- Gisle Vanem fixed the MSVC build files.
+
+* August 20
+
+- Gisle Vanem made c-ares build and work with his Watt-32 TCP/IP stack.
+
+* August 13
+
+- Harshal Pradhan made a minor syntax change in ares_init.c to make it build
+ fine with MSVC 7.1
+
+* July 24
+
+- Made the lib get built static only if --enable-debug is used.
+
+- Gisle Vanem fixed:
+
+ Basically in loops like handle_errors(), 'query->next' was assigned a local
+ variable and then query was referenced after the memory was freed by
+ next_server(). I've changed that so next_server() and end_query() returns
+ the next query. So callers should use this ret-value.
+
+ The next problem was that 'server->tcp_buffer_pos' had a random value at
+ entry to 1st recv() (luckily causing Winsock to return ENOBUFS).
+
+ I've also added a ares_writev() for Windows to streamline the code a bit
+ more.
+
+* July 20
+- Fixed a few variable return types for some system calls. Made configure
+ check for ssize_t to make it possible to use that when receiving the send()
+ error code. This is necessary to prevent compiler warnings on some systems.
+
+- Made configure create config.h, and all source files now include setup.h that
+ might include the proper config.h (or a handicrafted alternative).
+
+- Switched to 'ares_socket_t' type for sockets in ares, since Windows don't
+ use 'int' for that.
+
+- automake-ified and libool-ified c-ares. Now it builds libcares as a shared
+ lib on most platforms if wanted. (This bloated the size of the release
+ archive with another 200K!)
+
+- Makefile.am now uses Makefile.inc for the c sources, h headers and man
+ pages, to make it easier for other makefiles to use the exact same set of
+ files.
+
+- Adjusted 'maketgz' to use the new automake magic when building distribution
+ archives.
+
+- Anyone desires HTML and/or PDF versions of the man pages in the release
+ archives?
+
+* July 3
+- Günter Knauf made c-ares build and run on Novell Netware.
+
+* July 1
+- Gisle Vanem provided Makefile.dj to build with djgpp, added a few more djgpp
+ fixes and made ares not use 'errno' to provide further info on Windows.
+
+* June 30
+- Gisle Vanem made it build with djgpp and run fine with the Watt-32 stack.
+
+* June 10
+- Gisle Vanem's init patch for Windows:
+
+ The init_by_resolv_conf() function fetches the DNS-server(s)
+ from a series of registry branches.
+
+ This can be wrong in the case where DHCP has assigned nameservers, but the
+ user has overridden these servers with other prefered settings. Then it's
+ wrong to use the DHCPNAMESERVER setting in registry.
+
+ In the case of no global DHCP-assigned or fixed servers, but DNS server(s)
+ per adapter, one has to query the adapter branches. But how can c-ares know
+ which adapter is valid for use? AFAICS it can't. There could be one adapter
+ that is down (e.g. a VPN adapter).
+
+ So it's better to leave this to the IP Helper API (iphlapi) available in
+ Win-98/2000 and later. My patch falls-back to the old way if not available.
+
+* June 8
+- James Bursa fixed an init issue for RISC OS.
+
+* May 11
+- Nico Stappenbelt reported that when processing domain and search lines in
+ the resolv.conf file, the first entry encountered is processed and used as
+ the search list. According to the manual pages for both Linux, Solaris and
+ Tru64, the last entry of either a domain or a search field is used.
+
+ This is now adjusted in the code
+
+Version 1.2.0 (April 13, 2004)
+
+* April 2, 2004
+- Updated various man pages to look nicer when converted to HTML on the web
+ site.
+
+* April 1, 2004
+- Dirk Manske provided a new function that is now named ares_cancel(). It is
+ used to cancel/cleanup a resolve/request made using ares functions on the
+ given ares channel. It does not destroy/kill the ares channel itself.
+
+- Dominick Meglio cleaned up the formatting in several man pages.
+
+* March 30, 2004
+- Dominick Meglio's new ares_expand_string. A helper function when decoding
+ incoming DNS packages.
+
+- Daniel Stenberg modified the Makefile.in to use a for loop for the man page
+ installation to improve overview and make it easier to add man pages.
+
+Version 1.1.0 (March 11, 2004)
+
+* March 9, 2004
+- Gisle Vanem improved build on Windows.
+
+* February 25, 2004
+- Dan Fandrich found a flaw in the Feb 22 fix.
+
+- Added better configure --enable-debug logic (taken from the curl configure
+ script). Added acinclude.m4 to the tarball.
+
+* February 23, 2004
+- Removed ares_free_errmem(), the function, the file and the man page. It was
+ not used and it did nothing.
+
+- Fixed a lot of code that wasn't "64bit clean" and thus caused a lot of
+ compiler warnings on picky compilers.
+
+* February 22, 2004
+- Dominick Meglio made ares init support multiple name servers in the
+ NameServer key on Windows.
+
+* February 16, 2004
+- Modified ares_private.h to include libcurl's memory debug header if
+ CURLDEBUG is set. This makes all the ares-functions supervised properly by
+ the curl test suite. This also forced me to add inclusion of the
+ ares_private.h header in a few more files that are using some kind of
+ memory-related resources.
+
+- Made the makefile only build ahost and adig if 'make demos' is used.
+
+* February 10, 2004
+- Dirk Manske made ares_version.h installed with 'make install'
+
+* February 4, 2004
+- ares_free_errmem() is subject for removal, it is simply present for future
+ purposes, and since we removed the extra parameter in strerror() it won't
+ be used by c-ares!
+- configure --enable-debug now enables picky compiler options if gcc is used
+- fixed several compiler warnings --enable-debug showed and Joerg Mueller-Tolk
+ reported
+
+Version 1.0.0 (February 3, 2004)
+
+* February 3, 2004
+- now we produce the libcares.a library instead of the previous libares.a
+ since we are no longer compatible
+
+* February 2, 2004
+
+- ares_strerror() has one argument less. This is the first official
+ modification of the existing provided ares API.
+
+* January 29, 2004
+
+- Dirk Manske fixed how the socket is set non-blocking.
+
+* January 4, 2004
+
+- Dominick Meglio made the private gettimeofday() become ares_gettimeofday()
+ instead in order to not pollute the name space and risk colliding with
+ other libraries' versions of this function.
+
+* October 24, 2003. Daniel Stenberg
+
+ Added ares_version().
+
+Version 1.0-pre1 (8 October 2003)
+
+- James Bursa made it run on RISC OS
+
+- Dominick Meglio made it run fine on NT4
+
+- Duncan Wilcox made it work fine on Mac OS X
+
+- Daniel Stenberg adjusted the windows port
+
+- liren at vivisimo.com made the initial windows port
+
+* Imported the sources from ares 1.1.1
--- /dev/null
+include_directories(${CMAKE_CURRENT_SOURCE_DIR})
+include_directories(${node_platform}-${cares_arch})
+add_definitions(-DHAVE_CONFIG_H=1)
+
+include(CheckLibraryExists)
+check_library_exists(socket socket "" HAVE_SOCKET_LIB)
+check_library_exists(nsl gethostbyname "" HAVE_NSL_LIB)
+
+file(GLOB lib_sources *.c)
+add_library(cares ${lib_sources})
+
+if(${HAVE_SOCKET_LIB})
+ set(cares_libs ${cares_libs} socket)
+endif()
+
+if(${HAVE_NSL_LIB})
+ set(cares_libs ${cares_libs} nsl)
+endif()
+
+if(cares_libs)
+ target_link_libraries(cares ${cares_libs})
+endif()
--- /dev/null
+Major changes since:
+* see the CHANGES file
+
+Major changes in release 1.1.1:
+* ares should now compile as C++ code (no longer uses reserved word
+ "class").
+* Added SRV support to adig test program.
+* Fixed a few error handling bugs in query processing.
+
+Major changes in release 1.1.0:
+* Added ares_free_string() function so that memory can be freed in the
+ same layer as it is allocated, a desirable feature in some
+ environments.
+* A few of the ares_dns.h macros are fixed to use the proper bitwise
+ operator.
+* Fixed a couple of fenceposts fixed in ares_expand_name()'s
+ bounds-checking.
+* In process_timeouts(), extract query->next before calling
+ next_server() and possibly freeing the query structure.
+* Casted arguments to ctype macros casted to unsigned char, since not
+ all char values are valid inputs to those macros according to ANSI.
--- /dev/null
+c-ares
+======
+
+This is c-ares, an asynchronous resolver library. It is intended for
+applications which need to perform DNS queries without blocking, or need to
+perform multiple DNS queries in parallel. The primary examples of such
+applications are servers which communicate with multiple clients and programs
+with graphical user interfaces.
+
+The full source code is available in the 'c-ares' release archives, and in a
+git repository: http://github.com/bagder/c-ares
+
+If you find bugs, correct flaws, have questions or have comments in general in
+regard to c-ares (or by all means the original ares too), get in touch with us
+on the c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares
+
+c-ares is of course distributed under the same MIT-style license as the
+original ares.
+
+You'll find all c-ares details and news here:
+
+ http://c-ares.haxx.se/
+
+
+NOTES FOR C-ARES HACKERS
+
+The following notes apply to c-ares version 1.7.0 and later.
+
+* The distributed ares_build.h file is only intended to be used on systems
+ which can not run the also distributed configure script.
+
+* The distributed ares_build.h file is generated as a copy of ares_build.h.dist
+ when the c-ares source code distribution archive file is originally created.
+
+* If you check out from git on a non-configure platform, you must run the
+ appropriate buildconf* script to set up ares_build.h and other local files
+ before being able of compiling the library.
+
+* On systems capable of running the configure script, the configure process
+ will overwrite the distributed ares_build.h file with one that is suitable
+ and specific to the library being configured and built, this new file is
+ generated from the ares_build.h.in template file.
+
+* If you intend to distribute an already compiled c-ares library you _MUST_
+ also distribute along with it the generated ares_build.h which has been
+ used to compile it. Otherwise the library will be of no use for the users of
+ the library that you have built. It is _your_ responsibility to provide this
+ file. No one at the c-ares project can know how you have built the library.
+
+* File ares_build.h includes platform and configuration dependent info,
+ and must not be modified by anyone. Configure script generates it for you.
+
+* We cannot assume anything else but very basic compiler features being
+ present. While c-ares requires an ANSI C compiler to build, some of the
+ earlier ANSI compilers clearly can't deal with some preprocessor operators.
+
+* Newlines must remain unix-style for older compilers' sake.
+
+* Comments must be written in the old-style /* unnested C-fashion */
+
--- /dev/null
+c-ares
+======
+
+This package is based on ares 1.1.1 (written by Greg Hudson). I decided to
+fork and release a separate project since the ares author didn't want the
+improvements that were vital for our use of it.
+
+This package is dubbed 'c-ares' since I (Daniel Stenberg) wanted this for use
+within the curl project (hence the letter C) and it makes a nice pun. Also,
+c-ares is not API compatible with ares: a new name makes that more obvious to
+the public.
+
+The original libares was distributed at athena-dist.mit.edu:pub/ATHENA/ares.
--- /dev/null
+
+
+ ___ __ _ _ __ ___ ___
+ / __| ___ / _` | '__/ _ \/ __|
+ | (_ |___| (_| | | | __/\__ \
+ \___| \__,_|_| \___||___/
+
+
+ How to build c-ares using MSVC or Visual Studio
+ =================================================
+
+
+
+ How to build using MSVC from the command line
+ ---------------------------------------------
+
+ Open a command prompt window and ensure that the environment is properly
+ set up in order to use MSVC or Visual Studio compiler tools.
+
+ Change to c-ares source folder where Makefile.msvc file is located and run:
+
+ > nmake -f Makefile.msvc
+
+ This will build all c-ares libraries as well as three sample programs.
+
+ Once the above command has finished a new folder named MSVCXX will exist
+ below the folder where makefile.msvc is found. The name of the folder
+ depends on the MSVC compiler version being used to build c-ares.
+
+ Below the MSVCXX folder there will exist four folders named 'cares',
+ 'ahost', 'acountry', and 'adig'. The 'cares' folder is the one that
+ holds the c-ares libraries you have just generated, the other three
+ hold sample programs that use the libraries.
+
+ The above command builds four versions of the c-ares library, dynamic
+ and static versions and each one in release and debug flavours. Each
+ of these is found in folders named dll-release, dll-debug, lib-release,
+ and lib-debug, which hang from the 'cares' folder mentioned above. Each
+ sample program also has folders with the same names to reflect which
+ library version it is using.
+
+
+ How to build using Visual Studio 6 IDE
+ --------------------------------------
+
+ A VC++ 6.0 reference workspace (vc6aws.dsw) is available within the 'vc'
+ folder to allow proper building of the library and sample programs.
+
+ 1) Open the vc6aws.dsw workspace with MSVC6's IDE.
+ 2) Select 'Build' from top menu.
+ 3) Select 'Batch Build' from dropdown menu.
+ 4) Make sure that the sixteen project configurations are 'checked'.
+ 5) Click on the 'Build' button.
+ 6) Once the sixteen project configurations are built you are done.
+
+ Dynamic and static c-ares libraries are built in debug and release flavours,
+ and can be located each one in its own subdirectory, dll-debug, dll-release,
+ lib-debug and lib-release, all of them below the 'vc\cares' subdirectory.
+
+ In the same way four executable versions of each sample program are built,
+ each using its respective library. The resulting sample executables are
+ located in its own subdirectory, dll-debug, dll-release, lib-debug and
+ lib-release, below the 'vc\acountry', 'vc\adig' and 'vc\ahost'folders.
+
+ These reference VC++ 6.0 configurations are generated using the dynamic CRT.
+
+
+ How to build using Visual Studio 2003 or newer IDE
+ --------------------------------------------------
+
+ First you have to convert the VC++ 6.0 reference workspace and project files
+ to the Visual Studio IDE version you are using, following next steps:
+
+ 1) Open vc\vc6aws.dsw with VS20XX.
+ 2) Allow VS20XX to update all projects and workspaces.
+ 3) Save ALL and close VS20XX.
+ 4) Open vc\vc6aws.sln with VS20XX.
+ 5) Select batch build, check 'all' projects and click 'build' button.
+
+ Same comments relative to generated files and folders as done above for
+ Visual Studio 6 IDE apply here.
+
+
+ Relationship between c-ares library file names and versions
+ -----------------------------------------------------------
+
+ c-ares static release library version files:
+
+ libcares.lib -> static release library
+
+ c-ares static debug library version files:
+
+ libcaresd.lib -> static debug library
+
+ c-ares dynamic release library version files:
+
+ cares.dll -> dynamic release library
+ cares.lib -> import library for the dynamic release library
+ cares.exp -> export file for the dynamic release library
+
+ c-ares dynamic debug library version files:
+
+ caresd.dll -> dynamic debug library
+ caresd.lib -> import library for the dynamic debug library
+ caresd.exp -> export file for the dynamic debug library
+ caresd.pdb -> debug symbol file for the dynamic debug library
+
+
+ How to use c-ares static libraries
+ ----------------------------------
+
+ When using the c-ares static library in your program, you will have to
+ define preprocessor symbol CARES_STATICLIB while building your program,
+ otherwise you will get errors at linkage stage.
+
+
+Have Fun!
+
--- /dev/null
+Library: c-ares, DNS resolver
+
+Version: 1.7.3 (11 June, 2010)
+
+Authors: Greg Hudson, Daniel Stenberg
+
+License: MIT
+
+Notes:
+
+Just use waf instead of the autoconf based configure script. Delete most of
+the documentation and other files distributed with it. To upgrade, run
+./configure on linux, macintosh, solaris (and other supported platforms) and
+copy
+- ares_config.h
+- ares_setup.h
+- ares_build.h
+into the appropriate directory.
+
+
+
--- /dev/null
+c-ares version 1.7.4
+
+Changed:
+
+ o local-bind: Support binding to local interface/IPs, see
+ ares_set_local_ip4, ares_set_local_ip6, ares_set_local_dev
+
+Fixed:
+
+ o memory leak in ares_getnameinfo
+ o add missing break that caused get_ares_servers to fail
+ o ares_parse_a_reply: fix CNAME response parsing
+ o init_by_options: don't copy an empty sortlist
+ o Replaced uint32_t with unsigned int to fix broken builds
+ on a couple of platforms
+ o Fix lookup with HOSTALIASES set
+ o adig: fix NAPTR parsing
+ o compiler warning cleanups
+
+Thanks go to these friendly people for their efforts and contributions:
+
+ Andrew C. Morrow, Ben Greear, Ben Noordhuis, Daniel Stenberg,
+ Guenter Knauf, Mike Crowe, Patrik Thunstrom, Yang Tse
+
+Have fun!
--- /dev/null
+TODO
+====
+
+ares_reinit()
+
+- To allow an app to force a re-read of /etc/resolv.conf etc, pretty much
+ like the res_init() resolver function offers
+
+ares_gethostbyname
+
+- When built to support IPv6, it needs to also support PF_UNSPEC or similar,
+ so that an application can ask for any protocol and then c-ares would return
+ all known resolves and not just explicitly IPv4 _or_ IPv6 resolves.
+
+ares_process
+
+- Upon next ABI breakage ares_process() should be changed to return 'int'
+ and return ARES_ENOTINITIALIZED if ares_library_init() has not been called.
+
+ares_process_fd
+
+- Upon next ABI breakage ares_process_fd() should be changed to return
+ 'int' and return ARES_ENOTINITIALIZED if library has not been initialized.
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#include <stdlib.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "ares.h"
+#include "ares_private.h"
+
+void ares__close_sockets(ares_channel channel, struct server_state *server)
+{
+ struct send_request *sendreq;
+
+ /* Free all pending output buffers. */
+ while (server->qhead)
+ {
+ /* Advance server->qhead; pull out query as we go. */
+ sendreq = server->qhead;
+ server->qhead = sendreq->next;
+ if (sendreq->data_storage != NULL)
+ free(sendreq->data_storage);
+ free(sendreq);
+ }
+ server->qtail = NULL;
+
+ /* Reset any existing input buffer. */
+ if (server->tcp_buffer)
+ free(server->tcp_buffer);
+ server->tcp_buffer = NULL;
+ server->tcp_lenbuf_pos = 0;
+
+ /* Reset brokenness */
+ server->is_broken = 0;
+
+ /* Close the TCP and UDP sockets. */
+ if (server->tcp_socket != ARES_SOCKET_BAD)
+ {
+ SOCK_STATE_CALLBACK(channel, server->tcp_socket, 0, 0);
+ sclose(server->tcp_socket);
+ server->tcp_socket = ARES_SOCKET_BAD;
+ server->tcp_connection_generation = ++channel->tcp_connection_generation;
+ }
+ if (server->udp_socket != ARES_SOCKET_BAD)
+ {
+ SOCK_STATE_CALLBACK(channel, server->udp_socket, 0, 0);
+ sclose(server->udp_socket);
+ server->udp_socket = ARES_SOCKET_BAD;
+ }
+}
--- /dev/null
+
+/* Copyright 1998, 2010 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+
+#include "ares.h"
+#include "inet_net_pton.h"
+#include "ares_private.h"
+
+int ares__get_hostent(FILE *fp, int family, struct hostent **host)
+{
+ char *line = NULL, *p, *q, **alias;
+ char *txtaddr, *txthost, *txtalias;
+ int status;
+ size_t addrlen, linesize, naliases;
+ struct ares_addr addr;
+ struct hostent *hostent = NULL;
+
+ *host = NULL; /* Assume failure */
+
+ /* Validate family */
+ switch (family) {
+ case AF_INET:
+ case AF_INET6:
+ case AF_UNSPEC:
+ break;
+ default:
+ return ARES_EBADFAMILY;
+ }
+
+ while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS)
+ {
+
+ /* Trim line comment. */
+ p = line;
+ while (*p && (*p != '#'))
+ p++;
+ *p = '\0';
+
+ /* Trim trailing whitespace. */
+ q = p - 1;
+ while ((q >= line) && ISSPACE(*q))
+ q--;
+ *++q = '\0';
+
+ /* Skip leading whitespace. */
+ p = line;
+ while (*p && ISSPACE(*p))
+ p++;
+ if (!*p)
+ /* Ignore line if empty. */
+ continue;
+
+ /* Pointer to start of IPv4 or IPv6 address part. */
+ txtaddr = p;
+
+ /* Advance past address part. */
+ while (*p && !ISSPACE(*p))
+ p++;
+ if (!*p)
+ /* Ignore line if reached end of line. */
+ continue;
+
+ /* Null terminate address part. */
+ *p = '\0';
+
+ /* Advance to host name */
+ p++;
+ while (*p && ISSPACE(*p))
+ p++;
+ if (!*p)
+ /* Ignore line if reached end of line. */
+ continue;
+
+ /* Pointer to start of host name. */
+ txthost = p;
+
+ /* Advance past host name. */
+ while (*p && !ISSPACE(*p))
+ p++;
+
+ /* Pointer to start of first alias. */
+ txtalias = NULL;
+ if (*p)
+ {
+ q = p + 1;
+ while (*q && ISSPACE(*q))
+ q++;
+ if (*q)
+ txtalias = q;
+ }
+
+ /* Null terminate host name. */
+ *p = '\0';
+
+ /* find out number of aliases. */
+ naliases = 0;
+ if (txtalias)
+ {
+ p = txtalias;
+ while (*p)
+ {
+ while (*p && !ISSPACE(*p))
+ p++;
+ while (*p && ISSPACE(*p))
+ p++;
+ naliases++;
+ }
+ }
+
+ /* Convert address string to network address for the requested family. */
+ addrlen = 0;
+ addr.family = AF_UNSPEC;
+ addr.addrV4.s_addr = INADDR_NONE;
+ if ((family == AF_INET) || (family == AF_UNSPEC))
+ {
+ addr.addrV4.s_addr = inet_addr(txtaddr);
+ if (addr.addrV4.s_addr != INADDR_NONE)
+ {
+ /* Actual network address family and length. */
+ addr.family = AF_INET;
+ addrlen = sizeof(addr.addrV4);
+ }
+ }
+ if ((family == AF_INET6) || ((family == AF_UNSPEC) && (!addrlen)))
+ {
+ if (ares_inet_pton(AF_INET6, txtaddr, &addr.addrV6) > 0)
+ {
+ /* Actual network address family and length. */
+ addr.family = AF_INET6;
+ addrlen = sizeof(addr.addrV6);
+ }
+ }
+ if (!addrlen)
+ /* Ignore line if invalid address string for the requested family. */
+ continue;
+
+ /*
+ ** Actual address family possible values are AF_INET and AF_INET6 only.
+ */
+
+ /* Allocate memory for the hostent structure. */
+ hostent = malloc(sizeof(struct hostent));
+ if (!hostent)
+ break;
+
+ /* Initialize fields for out of memory condition. */
+ hostent->h_aliases = NULL;
+ hostent->h_addr_list = NULL;
+
+ /* Copy official host name. */
+ hostent->h_name = strdup(txthost);
+ if (!hostent->h_name)
+ break;
+
+ /* Copy network address. */
+ hostent->h_addr_list = malloc(2 * sizeof(char *));
+ if (!hostent->h_addr_list)
+ break;
+ hostent->h_addr_list[1] = NULL;
+ hostent->h_addr_list[0] = malloc(addrlen);
+ if (!hostent->h_addr_list[0])
+ break;
+ if (addr.family == AF_INET)
+ memcpy(hostent->h_addr_list[0], &addr.addrV4, sizeof(addr.addrV4));
+ else
+ memcpy(hostent->h_addr_list[0], &addr.addrV6, sizeof(addr.addrV6));
+
+ /* Copy aliases. */
+ hostent->h_aliases = malloc((naliases + 1) * sizeof(char *));
+ if (!hostent->h_aliases)
+ break;
+ alias = hostent->h_aliases;
+ while (naliases)
+ *(alias + naliases--) = NULL;
+ *alias = NULL;
+ while (txtalias)
+ {
+ p = txtalias;
+ while (*p && !ISSPACE(*p))
+ p++;
+ q = p;
+ while (*q && ISSPACE(*q))
+ q++;
+ *p = '\0';
+ if ((*alias = strdup(txtalias)) == NULL)
+ break;
+ alias++;
+ txtalias = *q ? q : NULL;
+ }
+ if (txtalias)
+ /* Alias memory allocation failure. */
+ break;
+
+ /* Copy actual network address family and length. */
+ hostent->h_addrtype = addr.family;
+ hostent->h_length = (int)addrlen;
+
+ /* Free line buffer. */
+ free(line);
+
+ /* Return hostent successfully */
+ *host = hostent;
+ return ARES_SUCCESS;
+
+ }
+
+ /* If allocated, free line buffer. */
+ if (line)
+ free(line);
+
+ if (status == ARES_SUCCESS)
+ {
+ /* Memory allocation failure; clean up. */
+ if (hostent)
+ {
+ if (hostent->h_name)
+ free((char *) hostent->h_name);
+ if (hostent->h_aliases)
+ {
+ for (alias = hostent->h_aliases; *alias; alias++)
+ free(*alias);
+ free(hostent->h_aliases);
+ }
+ if (hostent->h_addr_list)
+ {
+ if (hostent->h_addr_list[0])
+ free(hostent->h_addr_list[0]);
+ free(hostent->h_addr_list);
+ }
+ free(hostent);
+ }
+ return ARES_ENOMEM;
+ }
+
+ return status;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "ares.h"
+#include "ares_nowarn.h"
+#include "ares_private.h"
+
+/* This is an internal function. Its contract is to read a line from
+ * a file into a dynamically allocated buffer, zeroing the trailing
+ * newline if there is one. The calling routine may call
+ * ares__read_line multiple times with the same buf and bufsize
+ * pointers; *buf will be reallocated and *bufsize adjusted as
+ * appropriate. The initial value of *buf should be NULL. After the
+ * calling routine is done reading lines, it should free *buf.
+ */
+int ares__read_line(FILE *fp, char **buf, size_t *bufsize)
+{
+ char *newbuf;
+ size_t offset = 0;
+ size_t len;
+
+ if (*buf == NULL)
+ {
+ *buf = malloc(128);
+ if (!*buf)
+ return ARES_ENOMEM;
+ *bufsize = 128;
+ }
+
+ for (;;)
+ {
+ int bytestoread = aresx_uztosi(*bufsize - offset);
+
+ if (!fgets(*buf + offset, bytestoread, fp))
+ return (offset != 0) ? 0 : (ferror(fp)) ? ARES_EFILE : ARES_EOF;
+ len = offset + strlen(*buf + offset);
+ if ((*buf)[len - 1] == '\n')
+ {
+ (*buf)[len - 1] = 0;
+ break;
+ }
+ offset = len;
+ if(len < *bufsize - 1)
+ continue;
+
+ /* Allocate more space. */
+ newbuf = realloc(*buf, *bufsize * 2);
+ if (!newbuf)
+ return ARES_ENOMEM;
+ *buf = newbuf;
+ *bufsize *= 2;
+ }
+ return ARES_SUCCESS;
+}
--- /dev/null
+
+/* Copyright (C) 2008 by Daniel Stenberg et al
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. M.I.T. makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+#include "ares.h"
+#include "ares_private.h"
+
+#if defined(WIN32) && !defined(MSDOS)
+
+struct timeval ares__tvnow(void)
+{
+ /*
+ ** GetTickCount() is available on _all_ Windows versions from W95 up
+ ** to nowadays. Returns milliseconds elapsed since last system boot,
+ ** increases monotonically and wraps once 49.7 days have elapsed.
+ */
+ struct timeval now;
+ DWORD milliseconds = GetTickCount();
+ now.tv_sec = milliseconds / 1000;
+ now.tv_usec = (milliseconds % 1000) * 1000;
+ return now;
+}
+
+#elif defined(HAVE_CLOCK_GETTIME_MONOTONIC)
+
+struct timeval ares__tvnow(void)
+{
+ /*
+ ** clock_gettime() is granted to be increased monotonically when the
+ ** monotonic clock is queried. Time starting point is unspecified, it
+ ** could be the system start-up time, the Epoch, or something else,
+ ** in any case the time starting point does not change once that the
+ ** system has started up.
+ */
+ struct timeval now;
+ struct timespec tsnow;
+ if(0 == clock_gettime(CLOCK_MONOTONIC, &tsnow)) {
+ now.tv_sec = tsnow.tv_sec;
+ now.tv_usec = tsnow.tv_nsec / 1000;
+ }
+ /*
+ ** Even when the configure process has truly detected monotonic clock
+ ** availability, it might happen that it is not actually available at
+ ** run-time. When this occurs simply fallback to other time source.
+ */
+#ifdef HAVE_GETTIMEOFDAY
+ else
+ (void)gettimeofday(&now, NULL);
+#else
+ else {
+ now.tv_sec = (long)time(NULL);
+ now.tv_usec = 0;
+ }
+#endif
+ return now;
+}
+
+#elif defined(HAVE_GETTIMEOFDAY)
+
+struct timeval ares__tvnow(void)
+{
+ /*
+ ** gettimeofday() is not granted to be increased monotonically, due to
+ ** clock drifting and external source time synchronization it can jump
+ ** forward or backward in time.
+ */
+ struct timeval now;
+ (void)gettimeofday(&now, NULL);
+ return now;
+}
+
+#else
+
+struct timeval ares__tvnow(void)
+{
+ /*
+ ** time() returns the value of time in seconds since the Epoch.
+ */
+ struct timeval now;
+ now.tv_sec = (long)time(NULL);
+ now.tv_usec = 0;
+ return now;
+}
+
+#endif
+
+#if 0 /* Not used */
+/*
+ * Make sure that the first argument is the more recent time, as otherwise
+ * we'll get a weird negative time-diff back...
+ *
+ * Returns: the time difference in number of milliseconds.
+ */
+long ares__tvdiff(struct timeval newer, struct timeval older)
+{
+ return (newer.tv_sec-older.tv_sec)*1000+
+ (newer.tv_usec-older.tv_usec)/1000;
+}
+#endif
+
--- /dev/null
+
+/* Copyright (C) 2004 by Daniel Stenberg et al
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. M.I.T. makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+#include <assert.h>
+#include <stdlib.h>
+#include "ares.h"
+#include "ares_private.h"
+
+/*
+ * ares_cancel() cancels all ongoing requests/resolves that might be going on
+ * on the given channel. It does NOT kill the channel, use ares_destroy() for
+ * that.
+ */
+void ares_cancel(ares_channel channel)
+{
+ struct query *query;
+ struct list_node* list_head;
+ struct list_node* list_node;
+ int i;
+
+ list_head = &(channel->all_queries);
+ for (list_node = list_head->next; list_node != list_head; )
+ {
+ query = list_node->data;
+ list_node = list_node->next; /* since we're deleting the query */
+ query->callback(query->arg, ARES_ECANCELLED, 0, NULL, 0);
+ ares__free_query(query);
+ }
+#ifndef NDEBUG
+ /* Freeing the query should remove it from all the lists in which it sits,
+ * so all query lists should be empty now.
+ */
+ assert(ares__is_list_empty(&(channel->all_queries)));
+ for (i = 0; i < ARES_QID_TABLE_SIZE; i++)
+ {
+ assert(ares__is_list_empty(&(channel->queries_by_qid[i])));
+ }
+ for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++)
+ {
+ assert(ares__is_list_empty(&(channel->queries_by_timeout[i])));
+ }
+#endif
+ if (!(channel->flags & ARES_FLAG_STAYOPEN))
+ {
+ if (channel->servers)
+ {
+ for (i = 0; i < channel->nservers; i++)
+ ares__close_sockets(channel, &channel->servers[i]);
+ }
+ }
+}
--- /dev/null
+
+/* Copyright (C) 2009-2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+
+#include "ares_setup.h"
+
+#include <stddef.h>
+
+#include "ares.h"
+#include "ares_data.h"
+#include "ares_private.h"
+
+
+/*
+** ares_free_data() - c-ares external API function.
+**
+** This function must be used by the application to free data memory that
+** has been internally allocated by some c-ares function and for which a
+** pointer has already been returned to the calling application. The list
+** of c-ares functions returning pointers that must be free'ed using this
+** function is:
+**
+** ares_get_servers()
+** ares_parse_srv_reply()
+** ares_parse_txt_reply()
+*/
+
+void ares_free_data(void *dataptr)
+{
+ struct ares_data *ptr;
+
+ if (!dataptr)
+ return;
+
+#ifdef __INTEL_COMPILER
+# pragma warning(push)
+# pragma warning(disable:1684)
+ /* 1684: conversion from pointer to same-sized integral type */
+#endif
+
+ ptr = (void *)((char *)dataptr - offsetof(struct ares_data, data));
+
+#ifdef __INTEL_COMPILER
+# pragma warning(pop)
+#endif
+
+ if (ptr->mark != ARES_DATATYPE_MARK)
+ return;
+
+ switch (ptr->type)
+ {
+ case ARES_DATATYPE_MX_REPLY:
+
+ if (ptr->data.mx_reply.next)
+ ares_free_data(ptr->data.mx_reply.next);
+ if (ptr->data.mx_reply.host)
+ free(ptr->data.mx_reply.host);
+ break;
+
+ case ARES_DATATYPE_SRV_REPLY:
+
+ if (ptr->data.srv_reply.next)
+ ares_free_data(ptr->data.srv_reply.next);
+ if (ptr->data.srv_reply.host)
+ free(ptr->data.srv_reply.host);
+ break;
+
+ case ARES_DATATYPE_TXT_REPLY:
+
+ if (ptr->data.txt_reply.next)
+ ares_free_data(ptr->data.txt_reply.next);
+ if (ptr->data.txt_reply.txt)
+ free(ptr->data.txt_reply.txt);
+ break;
+
+ case ARES_DATATYPE_ADDR_NODE:
+
+ if (ptr->data.addr_node.next)
+ ares_free_data(ptr->data.addr_node.next);
+ break;
+
+ default:
+ return;
+ }
+
+ free(ptr);
+}
+
+
+/*
+** ares_malloc_data() - c-ares internal helper function.
+**
+** This function allocates memory for a c-ares private ares_data struct
+** for the specified ares_datatype, initializes c-ares private fields
+** and zero initializes those which later might be used from the public
+** API. It returns an interior pointer which can be passed by c-ares
+** functions to the calling application, and that must be free'ed using
+** c-ares external API function ares_free_data().
+*/
+
+void *ares_malloc_data(ares_datatype type)
+{
+ struct ares_data *ptr;
+
+ ptr = malloc(sizeof(struct ares_data));
+ if (!ptr)
+ return NULL;
+
+ switch (type)
+ {
+ case ARES_DATATYPE_MX_REPLY:
+ ptr->data.mx_reply.next = NULL;
+ ptr->data.mx_reply.host = NULL;
+ ptr->data.mx_reply.priority = 0;
+ break;
+
+ case ARES_DATATYPE_SRV_REPLY:
+ ptr->data.srv_reply.next = NULL;
+ ptr->data.srv_reply.host = NULL;
+ ptr->data.srv_reply.priority = 0;
+ ptr->data.srv_reply.weight = 0;
+ ptr->data.srv_reply.port = 0;
+ break;
+
+ case ARES_DATATYPE_TXT_REPLY:
+ ptr->data.txt_reply.next = NULL;
+ ptr->data.txt_reply.txt = NULL;
+ ptr->data.txt_reply.length = 0;
+ break;
+
+ case ARES_DATATYPE_ADDR_NODE:
+ ptr->data.addr_node.next = NULL;
+ ptr->data.addr_node.family = 0;
+ memset(&ptr->data.addr_node.addrV6, 0,
+ sizeof(ptr->data.addr_node.addrV6));
+ break;
+
+ default:
+ free(ptr);
+ return NULL;
+ }
+
+ ptr->mark = ARES_DATATYPE_MARK;
+ ptr->type = type;
+
+ return &ptr->data;
+}
+
+
+/*
+** ares_get_datatype() - c-ares internal helper function.
+**
+** This function returns the ares_datatype of the data stored in a
+** private ares_data struct when given the public API pointer.
+*/
+
+ares_datatype ares_get_datatype(void * dataptr)
+{
+ struct ares_data *ptr;
+
+#ifdef __INTEL_COMPILER
+# pragma warning(push)
+# pragma warning(disable:1684)
+ /* 1684: conversion from pointer to same-sized integral type */
+#endif
+
+ ptr = (void *)((char *)dataptr - offsetof(struct ares_data, data));
+
+#ifdef __INTEL_COMPILER
+# pragma warning(pop)
+#endif
+
+ if (ptr->mark == ARES_DATATYPE_MARK)
+ return ptr->type;
+
+ return ARES_DATATYPE_UNKNOWN;
+}
--- /dev/null
+
+/* Copyright (C) 2009-2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+typedef enum {
+ ARES_DATATYPE_UNKNOWN = 1, /* unknown data type - introduced in 1.7.0 */
+ ARES_DATATYPE_SRV_REPLY, /* struct ares_srv_reply - introduced in 1.7.0 */
+ ARES_DATATYPE_TXT_REPLY, /* struct ares_txt_reply - introduced in 1.7.0 */
+ ARES_DATATYPE_ADDR_NODE, /* struct ares_addr_node - introduced in 1.7.1 */
+ ARES_DATATYPE_MX_REPLY, /* struct ares_mx_reply - introduced in 1.7.2 */
+#if 0
+ ARES_DATATYPE_ADDR6TTL, /* struct ares_addrttl */
+ ARES_DATATYPE_ADDRTTL, /* struct ares_addr6ttl */
+ ARES_DATATYPE_HOSTENT, /* struct hostent */
+ ARES_DATATYPE_OPTIONS, /* struct ares_options */
+#endif
+ ARES_DATATYPE_LAST /* not used - introduced in 1.7.0 */
+} ares_datatype;
+
+#define ARES_DATATYPE_MARK 0xbead
+
+/*
+ * ares_data struct definition is internal to c-ares and shall not
+ * be exposed by the public API in order to allow future changes
+ * and extensions to it without breaking ABI. This will be used
+ * internally by c-ares as the container of multiple types of data
+ * dynamically allocated for which a reference will be returned
+ * to the calling application.
+ *
+ * c-ares API functions returning a pointer to c-ares internally
+ * allocated data will actually be returning an interior pointer
+ * into this ares_data struct.
+ *
+ * All this is 'invisible' to the calling application, the only
+ * requirement is that this kind of data must be free'ed by the
+ * calling application using ares_free_data() with the pointer
+ * it has received from a previous c-ares function call.
+ */
+
+struct ares_data {
+ ares_datatype type; /* Actual data type identifier. */
+ unsigned int mark; /* Private ares_data signature. */
+ union {
+ struct ares_txt_reply txt_reply;
+ struct ares_srv_reply srv_reply;
+ struct ares_addr_node addr_node;
+ struct ares_mx_reply mx_reply;
+ } data;
+};
+
+void *ares_malloc_data(ares_datatype type);
+
+ares_datatype ares_get_datatype(void * dataptr);
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2004-2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+#include <assert.h>
+#include <stdlib.h>
+#include "ares.h"
+#include "ares_private.h"
+
+void ares_destroy_options(struct ares_options *options)
+{
+ int i;
+
+ if(options->servers)
+ free(options->servers);
+ for (i = 0; i < options->ndomains; i++)
+ free(options->domains[i]);
+ free(options->domains);
+ if(options->sortlist)
+ free(options->sortlist);
+ free(options->lookups);
+}
+
+void ares_destroy(ares_channel channel)
+{
+ int i;
+ struct query *query;
+ struct list_node* list_head;
+ struct list_node* list_node;
+
+ if (!channel)
+ return;
+
+ list_head = &(channel->all_queries);
+ for (list_node = list_head->next; list_node != list_head; )
+ {
+ query = list_node->data;
+ list_node = list_node->next; /* since we're deleting the query */
+ query->callback(query->arg, ARES_EDESTRUCTION, 0, NULL, 0);
+ ares__free_query(query);
+ }
+#ifndef NDEBUG
+ /* Freeing the query should remove it from all the lists in which it sits,
+ * so all query lists should be empty now.
+ */
+ assert(ares__is_list_empty(&(channel->all_queries)));
+ for (i = 0; i < ARES_QID_TABLE_SIZE; i++)
+ {
+ assert(ares__is_list_empty(&(channel->queries_by_qid[i])));
+ }
+ for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++)
+ {
+ assert(ares__is_list_empty(&(channel->queries_by_timeout[i])));
+ }
+#endif
+
+ ares__destroy_servers_state(channel);
+
+ if (channel->domains) {
+ for (i = 0; i < channel->ndomains; i++)
+ free(channel->domains[i]);
+ free(channel->domains);
+ }
+
+ if(channel->sortlist)
+ free(channel->sortlist);
+
+ if (channel->lookups)
+ free(channel->lookups);
+
+ free(channel);
+}
+
+void ares__destroy_servers_state(ares_channel channel)
+{
+ struct server_state *server;
+ int i;
+
+ if (channel->servers)
+ {
+ for (i = 0; i < channel->nservers; i++)
+ {
+ server = &channel->servers[i];
+ ares__close_sockets(channel, server);
+ assert(ares__is_list_empty(&server->queries_to_server));
+ }
+ free(channel->servers);
+ channel->servers = NULL;
+ }
+ channel->nservers = -1;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#ifndef ARES__DNS_H
+#define ARES__DNS_H
+
+#define DNS__16BIT(p) (((p)[0] << 8) | (p)[1])
+#define DNS__32BIT(p) (((p)[0] << 24) | ((p)[1] << 16) | \
+ ((p)[2] << 8) | (p)[3])
+
+#define DNS__SET16BIT(p, v) (((p)[0] = (unsigned char)(((v) >> 8) & 0xff)), \
+ ((p)[1] = (unsigned char)((v) & 0xff)))
+#define DNS__SET32BIT(p, v) (((p)[0] = (unsigned char)(((v) >> 24) & 0xff)), \
+ ((p)[1] = (unsigned char)(((v) >> 16) & 0xff)), \
+ ((p)[2] = (unsigned char)(((v) >> 8) & 0xff)), \
+ ((p)[3] = (unsigned char)((v) & 0xff)))
+
+#if 0
+/* we cannot use this approach on systems where we can't access 16/32 bit
+ data on un-aligned addresses */
+#define DNS__16BIT(p) ntohs(*(unsigned short*)(p))
+#define DNS__32BIT(p) ntohl(*(unsigned long*)(p))
+#define DNS__SET16BIT(p, v) *(unsigned short*)(p) = htons(v)
+#define DNS__SET32BIT(p, v) *(unsigned long*)(p) = htonl(v)
+#endif
+
+/* Macros for parsing a DNS header */
+#define DNS_HEADER_QID(h) DNS__16BIT(h)
+#define DNS_HEADER_QR(h) (((h)[2] >> 7) & 0x1)
+#define DNS_HEADER_OPCODE(h) (((h)[2] >> 3) & 0xf)
+#define DNS_HEADER_AA(h) (((h)[2] >> 2) & 0x1)
+#define DNS_HEADER_TC(h) (((h)[2] >> 1) & 0x1)
+#define DNS_HEADER_RD(h) ((h)[2] & 0x1)
+#define DNS_HEADER_RA(h) (((h)[3] >> 7) & 0x1)
+#define DNS_HEADER_Z(h) (((h)[3] >> 4) & 0x7)
+#define DNS_HEADER_RCODE(h) ((h)[3] & 0xf)
+#define DNS_HEADER_QDCOUNT(h) DNS__16BIT((h) + 4)
+#define DNS_HEADER_ANCOUNT(h) DNS__16BIT((h) + 6)
+#define DNS_HEADER_NSCOUNT(h) DNS__16BIT((h) + 8)
+#define DNS_HEADER_ARCOUNT(h) DNS__16BIT((h) + 10)
+
+/* Macros for constructing a DNS header */
+#define DNS_HEADER_SET_QID(h, v) DNS__SET16BIT(h, v)
+#define DNS_HEADER_SET_QR(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 7))
+#define DNS_HEADER_SET_OPCODE(h, v) ((h)[2] |= (unsigned char)(((v) & 0xf) << 3))
+#define DNS_HEADER_SET_AA(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 2))
+#define DNS_HEADER_SET_TC(h, v) ((h)[2] |= (unsigned char)(((v) & 0x1) << 1))
+#define DNS_HEADER_SET_RD(h, v) ((h)[2] |= (unsigned char)((v) & 0x1))
+#define DNS_HEADER_SET_RA(h, v) ((h)[3] |= (unsigned char)(((v) & 0x1) << 7))
+#define DNS_HEADER_SET_Z(h, v) ((h)[3] |= (unsigned char)(((v) & 0x7) << 4))
+#define DNS_HEADER_SET_RCODE(h, v) ((h)[3] |= (unsigned char)((v) & 0xf))
+#define DNS_HEADER_SET_QDCOUNT(h, v) DNS__SET16BIT((h) + 4, v)
+#define DNS_HEADER_SET_ANCOUNT(h, v) DNS__SET16BIT((h) + 6, v)
+#define DNS_HEADER_SET_NSCOUNT(h, v) DNS__SET16BIT((h) + 8, v)
+#define DNS_HEADER_SET_ARCOUNT(h, v) DNS__SET16BIT((h) + 10, v)
+
+/* Macros for parsing the fixed part of a DNS question */
+#define DNS_QUESTION_TYPE(q) DNS__16BIT(q)
+#define DNS_QUESTION_CLASS(q) DNS__16BIT((q) + 2)
+
+/* Macros for constructing the fixed part of a DNS question */
+#define DNS_QUESTION_SET_TYPE(q, v) DNS__SET16BIT(q, v)
+#define DNS_QUESTION_SET_CLASS(q, v) DNS__SET16BIT((q) + 2, v)
+
+/* Macros for parsing the fixed part of a DNS resource record */
+#define DNS_RR_TYPE(r) DNS__16BIT(r)
+#define DNS_RR_CLASS(r) DNS__16BIT((r) + 2)
+#define DNS_RR_TTL(r) DNS__32BIT((r) + 4)
+#define DNS_RR_LEN(r) DNS__16BIT((r) + 8)
+
+/* Macros for constructing the fixed part of a DNS resource record */
+#define DNS_RR_SET_TYPE(r) DNS__SET16BIT(r, v)
+#define DNS_RR_SET_CLASS(r) DNS__SET16BIT((r) + 2, v)
+#define DNS_RR_SET_TTL(r) DNS__SET32BIT((r) + 4, v)
+#define DNS_RR_SET_LEN(r) DNS__SET16BIT((r) + 8, v)
+
+#endif /* ARES__DNS_H */
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#include <stdlib.h>
+#include "ares.h"
+#include "ares_private.h" /* for the memdebug */
+
+static int name_length(const unsigned char *encoded, const unsigned char *abuf,
+ int alen);
+
+/* Expand an RFC1035-encoded domain name given by encoded. The
+ * containing message is given by abuf and alen. The result given by
+ * *s, which is set to a NUL-terminated allocated buffer. *enclen is
+ * set to the length of the encoded name (not the length of the
+ * expanded name; the goal is to tell the caller how many bytes to
+ * move forward to get past the encoded name).
+ *
+ * In the simple case, an encoded name is a series of labels, each
+ * composed of a one-byte length (limited to values between 0 and 63
+ * inclusive) followed by the label contents. The name is terminated
+ * by a zero-length label.
+ *
+ * In the more complicated case, a label may be terminated by an
+ * indirection pointer, specified by two bytes with the high bits of
+ * the first byte (corresponding to INDIR_MASK) set to 11. With the
+ * two high bits of the first byte stripped off, the indirection
+ * pointer gives an offset from the beginning of the containing
+ * message with more labels to decode. Indirection can happen an
+ * arbitrary number of times, so we have to detect loops.
+ *
+ * Since the expanded name uses '.' as a label separator, we use
+ * backslashes to escape periods or backslashes in the expanded name.
+ */
+
+int ares_expand_name(const unsigned char *encoded, const unsigned char *abuf,
+ int alen, char **s, long *enclen)
+{
+ int len, indir = 0;
+ char *q;
+ const unsigned char *p;
+ union {
+ ssize_t sig;
+ size_t uns;
+ } nlen;
+
+ nlen.sig = name_length(encoded, abuf, alen);
+ if (nlen.sig < 0)
+ return ARES_EBADNAME;
+
+ *s = malloc(nlen.uns + 1);
+ if (!*s)
+ return ARES_ENOMEM;
+ q = *s;
+
+ if (nlen.uns == 0) {
+ /* RFC2181 says this should be ".": the root of the DNS tree.
+ * Since this function strips trailing dots though, it becomes ""
+ */
+ q[0] = '\0';
+ *enclen = 1; /* the caller should move one byte to get past this */
+ return ARES_SUCCESS;
+ }
+
+ /* No error-checking necessary; it was all done by name_length(). */
+ p = encoded;
+ while (*p)
+ {
+ if ((*p & INDIR_MASK) == INDIR_MASK)
+ {
+ if (!indir)
+ {
+ *enclen = p + 2 - encoded;
+ indir = 1;
+ }
+ p = abuf + ((*p & ~INDIR_MASK) << 8 | *(p + 1));
+ }
+ else
+ {
+ len = *p;
+ p++;
+ while (len--)
+ {
+ if (*p == '.' || *p == '\\')
+ *q++ = '\\';
+ *q++ = *p;
+ p++;
+ }
+ *q++ = '.';
+ }
+ }
+ if (!indir)
+ *enclen = p + 1 - encoded;
+
+ /* Nuke the trailing period if we wrote one. */
+ if (q > *s)
+ *(q - 1) = 0;
+ else
+ *q = 0; /* zero terminate */
+
+ return ARES_SUCCESS;
+}
+
+/* Return the length of the expansion of an encoded domain name, or
+ * -1 if the encoding is invalid.
+ */
+static int name_length(const unsigned char *encoded, const unsigned char *abuf,
+ int alen)
+{
+ int n = 0, offset, indir = 0;
+
+ /* Allow the caller to pass us abuf + alen and have us check for it. */
+ if (encoded == abuf + alen)
+ return -1;
+
+ while (*encoded)
+ {
+ if ((*encoded & INDIR_MASK) == INDIR_MASK)
+ {
+ /* Check the offset and go there. */
+ if (encoded + 1 >= abuf + alen)
+ return -1;
+ offset = (*encoded & ~INDIR_MASK) << 8 | *(encoded + 1);
+ if (offset >= alen)
+ return -1;
+ encoded = abuf + offset;
+
+ /* If we've seen more indirects than the message length,
+ * then there's a loop.
+ */
+ if (++indir > alen)
+ return -1;
+ }
+ else
+ {
+ offset = *encoded;
+ if (encoded + offset + 1 >= abuf + alen)
+ return -1;
+ encoded++;
+ while (offset--)
+ {
+ n += (*encoded == '.' || *encoded == '\\') ? 2 : 1;
+ encoded++;
+ }
+ n++;
+ }
+ }
+
+ /* If there were any labels at all, then the number of dots is one
+ * less than the number of labels, so subtract one.
+ */
+ return (n) ? n - 1 : n;
+}
+
+/* Like ares_expand_name but returns EBADRESP in case of invalid input. */
+int ares__expand_name_for_response(const unsigned char *encoded,
+ const unsigned char *abuf, int alen,
+ char **s, long *enclen)
+{
+ int status = ares_expand_name(encoded, abuf, alen, s, enclen);
+ if (status == ARES_EBADNAME)
+ status = ARES_EBADRESP;
+ return status;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+
+#include <string.h>
+#include <stdlib.h>
+#include "ares.h"
+#include "ares_private.h" /* for the memdebug */
+
+/* Simply decodes a length-encoded character string. The first byte of the
+ * input is the length of the string to be returned and the bytes thereafter
+ * are the characters of the string. The returned result will be NULL
+ * terminated.
+ */
+int ares_expand_string(const unsigned char *encoded,
+ const unsigned char *abuf,
+ int alen,
+ unsigned char **s,
+ long *enclen)
+{
+ unsigned char *q;
+ union {
+ ssize_t sig;
+ size_t uns;
+ } elen;
+
+ if (encoded == abuf+alen)
+ return ARES_EBADSTR;
+
+ elen.uns = *encoded;
+ if (encoded+elen.sig+1 > abuf+alen)
+ return ARES_EBADSTR;
+
+ encoded++;
+
+ *s = malloc(elen.uns+1);
+ if (*s == NULL)
+ return ARES_ENOMEM;
+ q = *s;
+ strncpy((char *)q, (char *)encoded, elen.uns);
+ q[elen.uns] = '\0';
+
+ *s = q;
+
+ *enclen = (long)(elen.sig+1);
+
+ return ARES_SUCCESS;
+}
+
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+
+#include "ares.h"
+#include "ares_private.h"
+
+int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds)
+{
+ struct server_state *server;
+ ares_socket_t nfds;
+ int i;
+
+ /* Are there any active queries? */
+ int active_queries = !ares__is_list_empty(&(channel->all_queries));
+
+ nfds = 0;
+ for (i = 0; i < channel->nservers; i++)
+ {
+ server = &channel->servers[i];
+ /* We only need to register interest in UDP sockets if we have
+ * outstanding queries.
+ */
+ if (active_queries && server->udp_socket != ARES_SOCKET_BAD)
+ {
+ FD_SET(server->udp_socket, read_fds);
+ if (server->udp_socket >= nfds)
+ nfds = server->udp_socket + 1;
+ }
+ /* We always register for TCP events, because we want to know
+ * when the other side closes the connection, so we don't waste
+ * time trying to use a broken connection.
+ */
+ if (server->tcp_socket != ARES_SOCKET_BAD)
+ {
+ FD_SET(server->tcp_socket, read_fds);
+ if (server->qhead)
+ FD_SET(server->tcp_socket, write_fds);
+ if (server->tcp_socket >= nfds)
+ nfds = server->tcp_socket + 1;
+ }
+ }
+ return (int)nfds;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+#include <stdlib.h>
+
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+
+#include "ares.h"
+#include "ares_private.h" /* for memdebug */
+
+void ares_free_hostent(struct hostent *host)
+{
+ char **p;
+
+ free((char *)(host->h_name));
+ for (p = host->h_aliases; *p; p++)
+ free(*p);
+ free(host->h_aliases);
+ free(host->h_addr_list[0]); /* no matter if there is one or many entries,
+ there is only one malloc for all of them */
+ free(host->h_addr_list);
+ free(host);
+}
--- /dev/null
+
+/* Copyright 2000 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+#include <stdlib.h>
+#include "ares.h"
+#include "ares_private.h"
+
+void ares_free_string(void *str)
+{
+ free(str);
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "ares.h"
+#include "inet_net_pton.h"
+#include "ares_private.h"
+
+#ifdef WATT32
+#undef WIN32
+#endif
+
+struct addr_query {
+ /* Arguments passed to ares_gethostbyaddr() */
+ ares_channel channel;
+ struct ares_addr addr;
+ ares_host_callback callback;
+ void *arg;
+
+ const char *remaining_lookups;
+ int timeouts;
+};
+
+static void next_lookup(struct addr_query *aquery);
+static void addr_callback(void *arg, int status, int timeouts,
+ unsigned char *abuf, int alen);
+static void end_aquery(struct addr_query *aquery, int status,
+ struct hostent *host);
+static int file_lookup(struct ares_addr *addr, struct hostent **host);
+static void ptr_rr_name(char *name, const struct ares_addr *addr);
+
+void ares_gethostbyaddr(ares_channel channel, const void *addr, int addrlen,
+ int family, ares_host_callback callback, void *arg)
+{
+ struct addr_query *aquery;
+
+ if (family != AF_INET && family != AF_INET6)
+ {
+ callback(arg, ARES_ENOTIMP, 0, NULL);
+ return;
+ }
+
+ if ((family == AF_INET && addrlen != sizeof(aquery->addr.addrV4)) ||
+ (family == AF_INET6 && addrlen != sizeof(aquery->addr.addrV6)))
+ {
+ callback(arg, ARES_ENOTIMP, 0, NULL);
+ return;
+ }
+
+ aquery = malloc(sizeof(struct addr_query));
+ if (!aquery)
+ {
+ callback(arg, ARES_ENOMEM, 0, NULL);
+ return;
+ }
+ aquery->channel = channel;
+ if (family == AF_INET)
+ memcpy(&aquery->addr.addrV4, addr, sizeof(aquery->addr.addrV4));
+ else
+ memcpy(&aquery->addr.addrV6, addr, sizeof(aquery->addr.addrV6));
+ aquery->addr.family = family;
+ aquery->callback = callback;
+ aquery->arg = arg;
+ aquery->remaining_lookups = channel->lookups;
+ aquery->timeouts = 0;
+
+ next_lookup(aquery);
+}
+
+static void next_lookup(struct addr_query *aquery)
+{
+ const char *p;
+ char name[128];
+ int status;
+ struct hostent *host;
+
+ for (p = aquery->remaining_lookups; *p; p++)
+ {
+ switch (*p)
+ {
+ case 'b':
+ ptr_rr_name(name, &aquery->addr);
+ aquery->remaining_lookups = p + 1;
+ ares_query(aquery->channel, name, C_IN, T_PTR, addr_callback,
+ aquery);
+ return;
+ case 'f':
+ status = file_lookup(&aquery->addr, &host);
+
+ /* this status check below previously checked for !ARES_ENOTFOUND,
+ but we should not assume that this single error code is the one
+ that can occur, as that is in fact no longer the case */
+ if (status == ARES_SUCCESS)
+ {
+ end_aquery(aquery, status, host);
+ return;
+ }
+ break;
+ }
+ }
+ end_aquery(aquery, ARES_ENOTFOUND, NULL);
+}
+
+static void addr_callback(void *arg, int status, int timeouts,
+ unsigned char *abuf, int alen)
+{
+ struct addr_query *aquery = (struct addr_query *) arg;
+ struct hostent *host;
+ size_t addrlen;
+
+ aquery->timeouts += timeouts;
+ if (status == ARES_SUCCESS)
+ {
+ if (aquery->addr.family == AF_INET)
+ {
+ addrlen = sizeof(aquery->addr.addrV4);
+ status = ares_parse_ptr_reply(abuf, alen, &aquery->addr.addrV4,
+ (int)addrlen, AF_INET, &host);
+ }
+ else
+ {
+ addrlen = sizeof(aquery->addr.addrV6);
+ status = ares_parse_ptr_reply(abuf, alen, &aquery->addr.addrV6,
+ (int)addrlen, AF_INET6, &host);
+ }
+ end_aquery(aquery, status, host);
+ }
+ else if (status == ARES_EDESTRUCTION)
+ end_aquery(aquery, status, NULL);
+ else
+ next_lookup(aquery);
+}
+
+static void end_aquery(struct addr_query *aquery, int status,
+ struct hostent *host)
+{
+ aquery->callback(aquery->arg, status, aquery->timeouts, host);
+ if (host)
+ ares_free_hostent(host);
+ free(aquery);
+}
+
+static int file_lookup(struct ares_addr *addr, struct hostent **host)
+{
+ FILE *fp;
+ int status;
+ int error;
+
+#ifdef WIN32
+ char PATH_HOSTS[MAX_PATH];
+ if (IS_NT()) {
+ char tmp[MAX_PATH];
+ HKEY hkeyHosts;
+
+ if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ,
+ &hkeyHosts) == ERROR_SUCCESS)
+ {
+ DWORD dwLength = MAX_PATH;
+ RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, (LPBYTE)tmp,
+ &dwLength);
+ ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH);
+ RegCloseKey(hkeyHosts);
+ }
+ }
+ else
+ GetWindowsDirectory(PATH_HOSTS, MAX_PATH);
+
+ strcat(PATH_HOSTS, WIN_PATH_HOSTS);
+
+#elif defined(WATT32)
+ extern const char *_w32_GetHostsFile (void);
+ const char *PATH_HOSTS = _w32_GetHostsFile();
+
+ if (!PATH_HOSTS)
+ return ARES_ENOTFOUND;
+#endif
+
+ fp = fopen(PATH_HOSTS, "r");
+ if (!fp)
+ {
+ error = ERRNO;
+ switch(error)
+ {
+ case ENOENT:
+ case ESRCH:
+ return ARES_ENOTFOUND;
+ default:
+ DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n",
+ error, strerror(error)));
+ DEBUGF(fprintf(stderr, "Error opening file: %s\n",
+ PATH_HOSTS));
+ *host = NULL;
+ return ARES_EFILE;
+ }
+ }
+ while ((status = ares__get_hostent(fp, addr->family, host)) == ARES_SUCCESS)
+ {
+ if (addr->family != (*host)->h_addrtype)
+ {
+ ares_free_hostent(*host);
+ continue;
+ }
+ if (addr->family == AF_INET)
+ {
+ if (memcmp((*host)->h_addr, &addr->addrV4,
+ sizeof(addr->addrV4)) == 0)
+ break;
+ }
+ else if (addr->family == AF_INET6)
+ {
+ if (memcmp((*host)->h_addr, &addr->addrV6,
+ sizeof(addr->addrV6)) == 0)
+ break;
+ }
+ ares_free_hostent(*host);
+ }
+ fclose(fp);
+ if (status == ARES_EOF)
+ status = ARES_ENOTFOUND;
+ if (status != ARES_SUCCESS)
+ *host = NULL;
+ return status;
+}
+
+static void ptr_rr_name(char *name, const struct ares_addr *addr)
+{
+ if (addr->family == AF_INET)
+ {
+ unsigned long laddr = ntohl(addr->addrV4.s_addr);
+ unsigned long a1 = (laddr >> 24UL) & 0xFFUL;
+ unsigned long a2 = (laddr >> 16UL) & 0xFFUL;
+ unsigned long a3 = (laddr >> 8UL) & 0xFFUL;
+ unsigned long a4 = laddr & 0xFFUL;
+ sprintf(name, "%lu.%lu.%lu.%lu.in-addr.arpa", a4, a3, a2, a1);
+ }
+ else
+ {
+ unsigned char *bytes = (unsigned char *)&addr->addrV6;
+ /* There are too many arguments to do this in one line using
+ * minimally C89-compliant compilers */
+ sprintf(name,
+ "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.",
+ bytes[15]&0xf, bytes[15] >> 4, bytes[14]&0xf, bytes[14] >> 4,
+ bytes[13]&0xf, bytes[13] >> 4, bytes[12]&0xf, bytes[12] >> 4,
+ bytes[11]&0xf, bytes[11] >> 4, bytes[10]&0xf, bytes[10] >> 4,
+ bytes[9]&0xf, bytes[9] >> 4, bytes[8]&0xf, bytes[8] >> 4);
+ sprintf(name+strlen(name),
+ "%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.%x.ip6.arpa",
+ bytes[7]&0xf, bytes[7] >> 4, bytes[6]&0xf, bytes[6] >> 4,
+ bytes[5]&0xf, bytes[5] >> 4, bytes[4]&0xf, bytes[4] >> 4,
+ bytes[3]&0xf, bytes[3] >> 4, bytes[2]&0xf, bytes[2] >> 4,
+ bytes[1]&0xf, bytes[1] >> 4, bytes[0]&0xf, bytes[0] >> 4);
+ }
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+
+#include "ares.h"
+#include "inet_net_pton.h"
+#include "bitncmp.h"
+#include "ares_private.h"
+
+#ifdef WATT32
+#undef WIN32
+#endif
+
+struct host_query {
+ /* Arguments passed to ares_gethostbyname() */
+ ares_channel channel;
+ char *name;
+ ares_host_callback callback;
+ void *arg;
+ int sent_family; /* this family is what was is being used */
+ int want_family; /* this family is what is asked for in the API */
+ const char *remaining_lookups;
+ int timeouts;
+};
+
+static void next_lookup(struct host_query *hquery, int status_code);
+static void host_callback(void *arg, int status, int timeouts,
+ unsigned char *abuf, int alen);
+static void end_hquery(struct host_query *hquery, int status,
+ struct hostent *host);
+static int fake_hostent(const char *name, int family,
+ ares_host_callback callback, void *arg);
+static int file_lookup(const char *name, int family, struct hostent **host);
+static void sort_addresses(struct hostent *host,
+ const struct apattern *sortlist, int nsort);
+static void sort6_addresses(struct hostent *host,
+ const struct apattern *sortlist, int nsort);
+static int get_address_index(const struct in_addr *addr,
+ const struct apattern *sortlist, int nsort);
+static int get6_address_index(const struct ares_in6_addr *addr,
+ const struct apattern *sortlist, int nsort);
+
+void ares_gethostbyname(ares_channel channel, const char *name, int family,
+ ares_host_callback callback, void *arg)
+{
+ struct host_query *hquery;
+
+ /* Right now we only know how to look up Internet addresses - and unspec
+ means try both basically. */
+ switch (family) {
+ case AF_INET:
+ case AF_INET6:
+ case AF_UNSPEC:
+ break;
+ default:
+ callback(arg, ARES_ENOTIMP, 0, NULL);
+ return;
+ }
+
+ if (fake_hostent(name, family, callback, arg))
+ return;
+
+ /* Allocate and fill in the host query structure. */
+ hquery = malloc(sizeof(struct host_query));
+ if (!hquery)
+ {
+ callback(arg, ARES_ENOMEM, 0, NULL);
+ return;
+ }
+ hquery->channel = channel;
+ hquery->name = strdup(name);
+ hquery->want_family = family;
+ hquery->sent_family = -1; /* nothing is sent yet */
+ if (!hquery->name) {
+ free(hquery);
+ callback(arg, ARES_ENOMEM, 0, NULL);
+ return;
+ }
+ hquery->callback = callback;
+ hquery->arg = arg;
+ hquery->remaining_lookups = channel->lookups;
+ hquery->timeouts = 0;
+
+ /* Start performing lookups according to channel->lookups. */
+ next_lookup(hquery, ARES_ECONNREFUSED /* initial error code */);
+}
+
+static void next_lookup(struct host_query *hquery, int status_code)
+{
+ const char *p;
+ struct hostent *host;
+ int status = status_code;
+
+ for (p = hquery->remaining_lookups; *p; p++)
+ {
+ switch (*p)
+ {
+ case 'b':
+ /* DNS lookup */
+ hquery->remaining_lookups = p + 1;
+ if ((hquery->want_family == AF_INET6) ||
+ (hquery->want_family == AF_UNSPEC)) {
+ /* if inet6 or unspec, start out with AAAA */
+ hquery->sent_family = AF_INET6;
+ ares_search(hquery->channel, hquery->name, C_IN, T_AAAA,
+ host_callback, hquery);
+ }
+ else {
+ hquery->sent_family = AF_INET;
+ ares_search(hquery->channel, hquery->name, C_IN, T_A,
+ host_callback, hquery);
+ }
+ return;
+
+ case 'f':
+ /* Host file lookup */
+ status = file_lookup(hquery->name, hquery->want_family, &host);
+
+ /* this status check below previously checked for !ARES_ENOTFOUND,
+ but we should not assume that this single error code is the one
+ that can occur, as that is in fact no longer the case */
+ if (status == ARES_SUCCESS)
+ {
+ end_hquery(hquery, status, host);
+ return;
+ }
+ status = status_code; /* Use original status code */
+ break;
+ }
+ }
+ end_hquery(hquery, status, NULL);
+}
+
+static void host_callback(void *arg, int status, int timeouts,
+ unsigned char *abuf, int alen)
+{
+ struct host_query *hquery = (struct host_query *) arg;
+ ares_channel channel = hquery->channel;
+ struct hostent *host = NULL;
+
+ hquery->timeouts += timeouts;
+ if (status == ARES_SUCCESS)
+ {
+ if (hquery->sent_family == AF_INET)
+ {
+ status = ares_parse_a_reply(abuf, alen, &host, NULL, NULL);
+ if (host && channel->nsort)
+ sort_addresses(host, channel->sortlist, channel->nsort);
+ }
+ else if (hquery->sent_family == AF_INET6)
+ {
+ status = ares_parse_aaaa_reply(abuf, alen, &host, NULL, NULL);
+ if (status == ARES_ENODATA || status == ARES_EBADRESP) {
+ /* The query returned something but either there were no AAAA
+ records (e.g. just CNAME) or the response was malformed. Try
+ looking up A instead. We should possibly limit this
+ attempt-next logic to AF_UNSPEC lookups only. */
+ hquery->sent_family = AF_INET;
+ ares_search(hquery->channel, hquery->name, C_IN, T_A,
+ host_callback, hquery);
+ return;
+ }
+ if (host && channel->nsort)
+ sort6_addresses(host, channel->sortlist, channel->nsort);
+ }
+ end_hquery(hquery, status, host);
+ }
+ else if ((status == ARES_ENODATA || status == ARES_EBADRESP ||
+ status == ARES_ETIMEOUT) && hquery->sent_family == AF_INET6)
+ {
+ /* The AAAA query yielded no useful result. Now look up an A instead.
+ We should possibly limit this attempt-next logic to AF_UNSPEC lookups
+ only. */
+ hquery->sent_family = AF_INET;
+ ares_search(hquery->channel, hquery->name, C_IN, T_A, host_callback,
+ hquery);
+ }
+ else if (status == ARES_EDESTRUCTION)
+ end_hquery(hquery, status, NULL);
+ else
+ next_lookup(hquery, status);
+}
+
+static void end_hquery(struct host_query *hquery, int status,
+ struct hostent *host)
+{
+ hquery->callback(hquery->arg, status, hquery->timeouts, host);
+ if (host)
+ ares_free_hostent(host);
+ free(hquery->name);
+ free(hquery);
+}
+
+/* If the name looks like an IP address, fake up a host entry, end the
+ * query immediately, and return true. Otherwise return false.
+ */
+static int fake_hostent(const char *name, int family,
+ ares_host_callback callback, void *arg)
+{
+ struct hostent hostent;
+ char *aliases[1] = { NULL };
+ char *addrs[2];
+ int result = 0;
+ struct in_addr in;
+ struct ares_in6_addr in6;
+
+ if (family == AF_INET || family == AF_INET6)
+ {
+ /* It only looks like an IP address if it's all numbers and dots. */
+ int numdots = 0, valid = 1;
+ const char *p;
+ for (p = name; *p; p++)
+ {
+ if (!ISDIGIT(*p) && *p != '.') {
+ valid = 0;
+ break;
+ } else if (*p == '.') {
+ numdots++;
+ }
+ }
+
+ /* if we don't have 3 dots, it is illegal
+ * (although inet_addr doesn't think so).
+ */
+ if (numdots != 3 || !valid)
+ result = 0;
+ else
+ result = ((in.s_addr = inet_addr(name)) == INADDR_NONE ? 0 : 1);
+
+ if (result)
+ family = AF_INET;
+ }
+ if (family == AF_INET6)
+ result = (ares_inet_pton(AF_INET6, name, &in6) < 1 ? 0 : 1);
+
+ if (!result)
+ return 0;
+
+ if (family == AF_INET)
+ {
+ hostent.h_length = (int)sizeof(struct in_addr);
+ addrs[0] = (char *)∈
+ }
+ else if (family == AF_INET6)
+ {
+ hostent.h_length = (int)sizeof(struct ares_in6_addr);
+ addrs[0] = (char *)&in6;
+ }
+ /* Duplicate the name, to avoid a constness violation. */
+ hostent.h_name = strdup(name);
+ if (!hostent.h_name)
+ {
+ callback(arg, ARES_ENOMEM, 0, NULL);
+ return 1;
+ }
+
+ /* Fill in the rest of the host structure and terminate the query. */
+ addrs[1] = NULL;
+ hostent.h_aliases = aliases;
+ hostent.h_addrtype = family;
+ hostent.h_addr_list = addrs;
+ callback(arg, ARES_SUCCESS, 0, &hostent);
+
+ free((char *)(hostent.h_name));
+ return 1;
+}
+
+/* This is an API method */
+int ares_gethostbyname_file(ares_channel channel, const char *name,
+ int family, struct hostent **host)
+{
+ int result;
+
+ /* We only take the channel to ensure that ares_init() been called. */
+ if(channel == NULL)
+ {
+ /* Anything will do, really. This seems fine, and is consistent with
+ other error cases. */
+ *host = NULL;
+ return ARES_ENOTFOUND;
+ }
+
+ /* Just chain to the internal implementation we use here; it's exactly
+ * what we want.
+ */
+ result = file_lookup(name, family, host);
+ if(result != ARES_SUCCESS)
+ {
+ /* We guarantee a NULL hostent on failure. */
+ *host = NULL;
+ }
+ return result;
+}
+
+static int file_lookup(const char *name, int family, struct hostent **host)
+{
+ FILE *fp;
+ char **alias;
+ int status;
+ int error;
+
+#ifdef WIN32
+ char PATH_HOSTS[MAX_PATH];
+ if (IS_NT()) {
+ char tmp[MAX_PATH];
+ HKEY hkeyHosts;
+
+ if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0, KEY_READ,
+ &hkeyHosts) == ERROR_SUCCESS)
+ {
+ DWORD dwLength = MAX_PATH;
+ RegQueryValueEx(hkeyHosts, DATABASEPATH, NULL, NULL, (LPBYTE)tmp,
+ &dwLength);
+ ExpandEnvironmentStrings(tmp, PATH_HOSTS, MAX_PATH);
+ RegCloseKey(hkeyHosts);
+ }
+ }
+ else
+ GetWindowsDirectory(PATH_HOSTS, MAX_PATH);
+
+ strcat(PATH_HOSTS, WIN_PATH_HOSTS);
+
+#elif defined(WATT32)
+ extern const char *_w32_GetHostsFile (void);
+ const char *PATH_HOSTS = _w32_GetHostsFile();
+
+ if (!PATH_HOSTS)
+ return ARES_ENOTFOUND;
+#endif
+
+ fp = fopen(PATH_HOSTS, "r");
+ if (!fp)
+ {
+ error = ERRNO;
+ switch(error)
+ {
+ case ENOENT:
+ case ESRCH:
+ return ARES_ENOTFOUND;
+ default:
+ DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n",
+ error, strerror(error)));
+ DEBUGF(fprintf(stderr, "Error opening file: %s\n",
+ PATH_HOSTS));
+ *host = NULL;
+ return ARES_EFILE;
+ }
+ }
+ while ((status = ares__get_hostent(fp, family, host)) == ARES_SUCCESS)
+ {
+ if (strcasecmp((*host)->h_name, name) == 0)
+ break;
+ for (alias = (*host)->h_aliases; *alias; alias++)
+ {
+ if (strcasecmp(*alias, name) == 0)
+ break;
+ }
+ if (*alias)
+ break;
+ ares_free_hostent(*host);
+ }
+ fclose(fp);
+ if (status == ARES_EOF)
+ status = ARES_ENOTFOUND;
+ if (status != ARES_SUCCESS)
+ *host = NULL;
+ return status;
+}
+
+static void sort_addresses(struct hostent *host,
+ const struct apattern *sortlist, int nsort)
+{
+ struct in_addr a1, a2;
+ int i1, i2, ind1, ind2;
+
+ /* This is a simple insertion sort, not optimized at all. i1 walks
+ * through the address list, with the loop invariant that everything
+ * to the left of i1 is sorted. In the loop body, the value at i1 is moved
+ * back through the list (via i2) until it is in sorted order.
+ */
+ for (i1 = 0; host->h_addr_list[i1]; i1++)
+ {
+ memcpy(&a1, host->h_addr_list[i1], sizeof(struct in_addr));
+ ind1 = get_address_index(&a1, sortlist, nsort);
+ for (i2 = i1 - 1; i2 >= 0; i2--)
+ {
+ memcpy(&a2, host->h_addr_list[i2], sizeof(struct in_addr));
+ ind2 = get_address_index(&a2, sortlist, nsort);
+ if (ind2 <= ind1)
+ break;
+ memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct in_addr));
+ }
+ memcpy(host->h_addr_list[i2 + 1], &a1, sizeof(struct in_addr));
+ }
+}
+
+/* Find the first entry in sortlist which matches addr. Return nsort
+ * if none of them match.
+ */
+static int get_address_index(const struct in_addr *addr,
+ const struct apattern *sortlist,
+ int nsort)
+{
+ int i;
+
+ for (i = 0; i < nsort; i++)
+ {
+ if (sortlist[i].family != AF_INET)
+ continue;
+ if (sortlist[i].type == PATTERN_MASK)
+ {
+ if ((addr->s_addr & sortlist[i].mask.addr4.s_addr)
+ == sortlist[i].addrV4.s_addr)
+ break;
+ }
+ else
+ {
+ if (!ares_bitncmp(&addr->s_addr, &sortlist[i].addrV4.s_addr,
+ sortlist[i].mask.bits))
+ break;
+ }
+ }
+ return i;
+}
+
+static void sort6_addresses(struct hostent *host,
+ const struct apattern *sortlist, int nsort)
+{
+ struct ares_in6_addr a1, a2;
+ int i1, i2, ind1, ind2;
+
+ /* This is a simple insertion sort, not optimized at all. i1 walks
+ * through the address list, with the loop invariant that everything
+ * to the left of i1 is sorted. In the loop body, the value at i1 is moved
+ * back through the list (via i2) until it is in sorted order.
+ */
+ for (i1 = 0; host->h_addr_list[i1]; i1++)
+ {
+ memcpy(&a1, host->h_addr_list[i1], sizeof(struct ares_in6_addr));
+ ind1 = get6_address_index(&a1, sortlist, nsort);
+ for (i2 = i1 - 1; i2 >= 0; i2--)
+ {
+ memcpy(&a2, host->h_addr_list[i2], sizeof(struct ares_in6_addr));
+ ind2 = get6_address_index(&a2, sortlist, nsort);
+ if (ind2 <= ind1)
+ break;
+ memcpy(host->h_addr_list[i2 + 1], &a2, sizeof(struct ares_in6_addr));
+ }
+ memcpy(host->h_addr_list[i2 + 1], &a1, sizeof(struct ares_in6_addr));
+ }
+}
+
+/* Find the first entry in sortlist which matches addr. Return nsort
+ * if none of them match.
+ */
+static int get6_address_index(const struct ares_in6_addr *addr,
+ const struct apattern *sortlist,
+ int nsort)
+{
+ int i;
+
+ for (i = 0; i < nsort; i++)
+ {
+ if (sortlist[i].family != AF_INET6)
+ continue;
+ if (!ares_bitncmp(addr,
+ &sortlist[i].addrV6,
+ sortlist[i].mask.bits))
+ break;
+ }
+ return i;
+}
--- /dev/null
+
+/* Copyright 2005 by Dominick Meglio
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+#include "ares_setup.h"
+
+#ifdef HAVE_GETSERVBYPORT_R
+# if !defined(GETSERVBYPORT_R_ARGS) || \
+ (GETSERVBYPORT_R_ARGS < 4) || (GETSERVBYPORT_R_ARGS > 6)
+# error "you MUST specifiy a valid number of arguments for getservbyport_r"
+# endif
+#endif
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#ifdef HAVE_NET_IF_H
+#include <net/if.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "ares.h"
+#include "ares_ipv6.h"
+#include "inet_ntop.h"
+#include "ares_private.h"
+
+struct nameinfo_query {
+ ares_nameinfo_callback callback;
+ void *arg;
+ union {
+ struct sockaddr_in addr4;
+ struct sockaddr_in6 addr6;
+ } addr;
+ int family;
+ int flags;
+ int timeouts;
+};
+
+#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
+#define IPBUFSIZ \
+ (sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255") + IF_NAMESIZE)
+#else
+#define IPBUFSIZ \
+ (sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"))
+#endif
+
+static void nameinfo_callback(void *arg, int status, int timeouts,
+ struct hostent *host);
+static char *lookup_service(unsigned short port, int flags,
+ char *buf, size_t buflen);
+#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
+static void append_scopeid(struct sockaddr_in6 *addr6, unsigned int scopeid,
+ char *buf, size_t buflen);
+#endif
+static char *ares_striendstr(const char *s1, const char *s2);
+
+void ares_getnameinfo(ares_channel channel, const struct sockaddr *sa,
+ ares_socklen_t salen,
+ int flags, ares_nameinfo_callback callback, void *arg)
+{
+ struct sockaddr_in *addr = NULL;
+ struct sockaddr_in6 *addr6 = NULL;
+ struct nameinfo_query *niquery;
+ unsigned int port = 0;
+
+ /* Validate socket address family and length */
+ if ((sa->sa_family == AF_INET) &&
+ (salen == sizeof(struct sockaddr_in)))
+ {
+ addr = (struct sockaddr_in *)sa;
+ port = addr->sin_port;
+ }
+ else if ((sa->sa_family == AF_INET6) &&
+ (salen == sizeof(struct sockaddr_in6)))
+ {
+ addr6 = (struct sockaddr_in6 *)sa;
+ port = addr6->sin6_port;
+ }
+ else
+ {
+ callback(arg, ARES_ENOTIMP, 0, NULL, NULL);
+ return;
+ }
+
+ /* If neither, assume they want a host */
+ if (!(flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST))
+ flags |= ARES_NI_LOOKUPHOST;
+
+ /* All they want is a service, no need for DNS */
+ if ((flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST))
+ {
+ char buf[33], *service;
+
+ service = lookup_service((unsigned short)(port & 0xffff),
+ flags, buf, sizeof(buf));
+ callback(arg, ARES_SUCCESS, 0, NULL, service);
+ return;
+ }
+
+ /* They want a host lookup */
+ if ((flags & ARES_NI_LOOKUPHOST))
+ {
+ /* A numeric host can be handled without DNS */
+ if ((flags & ARES_NI_NUMERICHOST))
+ {
+ char ipbuf[IPBUFSIZ];
+ char srvbuf[33];
+ char *service = NULL;
+ ipbuf[0] = 0;
+
+ /* Specifying not to lookup a host, but then saying a host
+ * is required has to be illegal.
+ */
+ if (flags & ARES_NI_NAMEREQD)
+ {
+ callback(arg, ARES_EBADFLAGS, 0, NULL, NULL);
+ return;
+ }
+ if (salen == sizeof(struct sockaddr_in6))
+ {
+ ares_inet_ntop(AF_INET6, &addr6->sin6_addr, ipbuf, IPBUFSIZ);
+ /* If the system supports scope IDs, use it */
+#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
+ append_scopeid(addr6, flags, ipbuf, sizeof(ipbuf));
+#endif
+ }
+ else
+ {
+ ares_inet_ntop(AF_INET, &addr->sin_addr, ipbuf, IPBUFSIZ);
+ }
+ /* They also want a service */
+ if (flags & ARES_NI_LOOKUPSERVICE)
+ service = lookup_service((unsigned short)(port & 0xffff),
+ flags, srvbuf, sizeof(srvbuf));
+ callback(arg, ARES_SUCCESS, 0, ipbuf, service);
+ return;
+ }
+ /* This is where a DNS lookup becomes necessary */
+ else
+ {
+ niquery = malloc(sizeof(struct nameinfo_query));
+ if (!niquery)
+ {
+ callback(arg, ARES_ENOMEM, 0, NULL, NULL);
+ return;
+ }
+ niquery->callback = callback;
+ niquery->arg = arg;
+ niquery->flags = flags;
+ niquery->timeouts = 0;
+ if (sa->sa_family == AF_INET)
+ {
+ niquery->family = AF_INET;
+ memcpy(&niquery->addr.addr4, addr, sizeof(addr));
+ ares_gethostbyaddr(channel, &addr->sin_addr,
+ sizeof(struct in_addr), AF_INET,
+ nameinfo_callback, niquery);
+ }
+ else
+ {
+ niquery->family = AF_INET6;
+ memcpy(&niquery->addr.addr6, addr6, sizeof(addr6));
+ ares_gethostbyaddr(channel, &addr6->sin6_addr,
+ sizeof(struct ares_in6_addr), AF_INET6,
+ nameinfo_callback, niquery);
+ }
+ }
+ }
+}
+
+static void nameinfo_callback(void *arg, int status, int timeouts,
+ struct hostent *host)
+{
+ struct nameinfo_query *niquery = (struct nameinfo_query *) arg;
+ char srvbuf[33];
+ char *service = NULL;
+
+ niquery->timeouts += timeouts;
+ if (status == ARES_SUCCESS)
+ {
+ /* They want a service too */
+ if (niquery->flags & ARES_NI_LOOKUPSERVICE)
+ {
+ if (niquery->family == AF_INET)
+ service = lookup_service(niquery->addr.addr4.sin_port,
+ niquery->flags, srvbuf, sizeof(srvbuf));
+ else
+ service = lookup_service(niquery->addr.addr6.sin6_port,
+ niquery->flags, srvbuf, sizeof(srvbuf));
+ }
+ /* NOFQDN means we have to strip off the domain name portion. We do
+ this by determining our own domain name, then searching the string
+ for this domain name and removing it.
+ */
+#ifdef HAVE_GETHOSTNAME
+ if (niquery->flags & ARES_NI_NOFQDN)
+ {
+ char buf[255];
+ char *domain;
+ gethostname(buf, 255);
+ if ((domain = strchr(buf, '.')) != NULL)
+ {
+ char *end = ares_striendstr(host->h_name, domain);
+ if (end)
+ *end = 0;
+ }
+ }
+#endif
+ niquery->callback(niquery->arg, ARES_SUCCESS, niquery->timeouts,
+ (char *)(host->h_name),
+ service);
+ free(niquery);
+ return;
+ }
+ /* We couldn't find the host, but it's OK, we can use the IP */
+ else if (status == ARES_ENOTFOUND && !(niquery->flags & ARES_NI_NAMEREQD))
+ {
+ char ipbuf[IPBUFSIZ];
+ if (niquery->family == AF_INET)
+ ares_inet_ntop(AF_INET, &niquery->addr.addr4.sin_addr, ipbuf,
+ IPBUFSIZ);
+ else
+ {
+ ares_inet_ntop(AF_INET6, &niquery->addr.addr6.sin6_addr, ipbuf,
+ IPBUFSIZ);
+#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
+ append_scopeid(&niquery->addr.addr6, niquery->flags, ipbuf,
+ sizeof(ipbuf));
+#endif
+ }
+ /* They want a service too */
+ if (niquery->flags & ARES_NI_LOOKUPSERVICE)
+ {
+ if (niquery->family == AF_INET)
+ service = lookup_service(niquery->addr.addr4.sin_port,
+ niquery->flags, srvbuf, sizeof(srvbuf));
+ else
+ service = lookup_service(niquery->addr.addr6.sin6_port,
+ niquery->flags, srvbuf, sizeof(srvbuf));
+ }
+ niquery->callback(niquery->arg, ARES_SUCCESS, niquery->timeouts, ipbuf,
+ service);
+ free(niquery);
+ return;
+ }
+ niquery->callback(niquery->arg, status, niquery->timeouts, NULL, NULL);
+ free(niquery);
+}
+
+static char *lookup_service(unsigned short port, int flags,
+ char *buf, size_t buflen)
+{
+ const char *proto;
+ struct servent *sep;
+#ifdef HAVE_GETSERVBYPORT_R
+ struct servent se;
+#endif
+ char tmpbuf[4096];
+
+ if (port)
+ {
+ if (flags & ARES_NI_NUMERICSERV)
+ sep = NULL;
+ else
+ {
+ if (flags & ARES_NI_UDP)
+ proto = "udp";
+ else if (flags & ARES_NI_SCTP)
+ proto = "sctp";
+ else if (flags & ARES_NI_DCCP)
+ proto = "dccp";
+ else
+ proto = "tcp";
+#ifdef HAVE_GETSERVBYPORT_R
+ sep = &se;
+ memset(tmpbuf, 0, sizeof(tmpbuf));
+#if GETSERVBYPORT_R_ARGS == 6
+ if (getservbyport_r(port, proto, &se, (void *)tmpbuf,
+ sizeof(tmpbuf), &sep) != 0)
+ sep = NULL;
+#elif GETSERVBYPORT_R_ARGS == 5
+ sep = getservbyport_r(port, proto, &se, (void *)tmpbuf,
+ sizeof(tmpbuf));
+#elif GETSERVBYPORT_R_ARGS == 4
+ if (getservbyport_r(port, proto, &se, (void *)tmpbuf) != 0)
+ sep = NULL;
+#else
+ /* Lets just hope the OS uses TLS! */
+ sep = getservbyport(port, proto);
+#endif
+#else
+ /* Lets just hope the OS uses TLS! */
+#if (defined(NETWARE) && !defined(__NOVELL_LIBC__))
+ sep = getservbyport(port, (char*)proto);
+#else
+ sep = getservbyport(port, proto);
+#endif
+#endif
+ }
+ if (sep && sep->s_name)
+ /* get service name */
+ strcpy(tmpbuf, sep->s_name);
+ else
+ /* get port as a string */
+ sprintf(tmpbuf, "%u", (unsigned int)ntohs(port));
+ if (strlen(tmpbuf) < buflen)
+ /* return it if buffer big enough */
+ strcpy(buf, tmpbuf);
+ else
+ /* avoid reusing previous one */
+ buf[0] = '\0';
+ return buf;
+ }
+ buf[0] = '\0';
+ return NULL;
+}
+
+#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
+static void append_scopeid(struct sockaddr_in6 *addr6, unsigned int flags,
+ char *buf, size_t buflen)
+{
+#ifdef HAVE_IF_INDEXTONAME
+ int is_ll, is_mcll;
+#endif
+ static const char fmt_u[] = "%u";
+ static const char fmt_lu[] = "%lu";
+ char tmpbuf[IF_NAMESIZE + 2];
+ size_t bufl;
+ const char *fmt = (sizeof(addr6->sin6_scope_id) > sizeof(unsigned int))?
+ fmt_lu:fmt_u;
+
+ tmpbuf[0] = '%';
+
+#ifdef HAVE_IF_INDEXTONAME
+ is_ll = IN6_IS_ADDR_LINKLOCAL(&addr6->sin6_addr);
+ is_mcll = IN6_IS_ADDR_MC_LINKLOCAL(&addr6->sin6_addr);
+ if ((flags & ARES_NI_NUMERICSCOPE) ||
+ (!is_ll && !is_mcll))
+ {
+ sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id);
+ }
+ else
+ {
+ if (if_indextoname(addr6->sin6_scope_id, &tmpbuf[1]) == NULL)
+ sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id);
+ }
+#else
+ sprintf(&tmpbuf[1], fmt, addr6->sin6_scope_id);
+ (void) flags;
+#endif
+ tmpbuf[IF_NAMESIZE + 1] = '\0';
+ bufl = strlen(buf);
+
+ if(bufl + strlen(tmpbuf) < buflen)
+ /* only append the scopeid string if it fits in the target buffer */
+ strcpy(&buf[bufl], tmpbuf);
+}
+#endif
+
+/* Determines if s1 ends with the string in s2 (case-insensitive) */
+static char *ares_striendstr(const char *s1, const char *s2)
+{
+ const char *c1, *c2, *c1_begin;
+ int lo1, lo2;
+ size_t s1_len = strlen(s1), s2_len = strlen(s2);
+
+ /* If the substr is longer than the full str, it can't match */
+ if (s2_len > s1_len)
+ return NULL;
+
+ /* Jump to the end of s1 minus the length of s2 */
+ c1_begin = s1+s1_len-s2_len;
+ c1 = (const char *)c1_begin;
+ c2 = s2;
+ while (c2 < s2+s2_len)
+ {
+ lo1 = TOLOWER(*c1);
+ lo2 = TOLOWER(*c2);
+ if (lo1 != lo2)
+ return NULL;
+ else
+ {
+ c1++;
+ c2++;
+ }
+ }
+ if (c2 == c1 && c2 == NULL)
+ return (char *)c1_begin;
+ return NULL;
+}
--- /dev/null
+/*
+ * Original file name getopt.c Initial import into the c-ares source tree
+ * on 2007-04-11. Lifted from version 5.2 of the 'Open Mash' project with
+ * the modified BSD license, BSD license without the advertising clause.
+ *
+ */
+
+/*
+ * getopt.c --
+ *
+ * Standard UNIX getopt function. Code is from BSD.
+ *
+ * Copyright (c) 1987-2001 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * A. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * B. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * C. Neither the names of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
+ * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* #if !defined(lint)
+ * static char sccsid[] = "@(#)getopt.c 8.2 (Berkeley) 4/2/94";
+ * #endif
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "ares_getopt.h"
+
+int opterr = 1, /* if error message should be printed */
+ optind = 1; /* index into parent argv vector */
+int optopt = 0; /* character checked for validity */
+static int optreset; /* reset getopt */
+char *optarg; /* argument associated with option */
+
+#define BADCH (int)'?'
+#define BADARG (int)':'
+#define EMSG (char *)""
+
+/*
+ * ares_getopt --
+ * Parse argc/argv argument vector.
+ */
+int
+ares_getopt(int nargc, char * const nargv[], const char *ostr)
+{
+ static char *place = EMSG; /* option letter processing */
+ char *oli; /* option letter list index */
+
+ if (optreset || !*place) { /* update scanning pointer */
+ optreset = 0;
+ if (optind >= nargc || *(place = nargv[optind]) != '-') {
+ place = EMSG;
+ return (EOF);
+ }
+ if (place[1] && *++place == '-') { /* found "--" */
+ ++optind;
+ place = EMSG;
+ return (EOF);
+ }
+ } /* option letter okay? */
+ if ((optopt = (int)*place++) == (int)':' ||
+ (oli = strchr(ostr, optopt)) == NULL) {
+ /*
+ * if the user didn't specify '-' as an option,
+ * assume it means EOF.
+ */
+ if (optopt == (int)'-')
+ return (EOF);
+ if (!*place)
+ ++optind;
+ if (opterr && *ostr != ':')
+ (void)fprintf(stderr,
+ "%s: illegal option -- %c\n", __FILE__, optopt);
+ return (BADCH);
+ }
+ if (*++oli != ':') { /* don't need argument */
+ optarg = NULL;
+ if (!*place)
+ ++optind;
+ }
+ else { /* need an argument */
+ if (*place) /* no white space */
+ optarg = place;
+ else if (nargc <= ++optind) { /* no arg */
+ place = EMSG;
+ if (*ostr == ':')
+ return (BADARG);
+ if (opterr)
+ (void)fprintf(stderr,
+ "%s: option requires an argument -- %c\n",
+ __FILE__, optopt);
+ return (BADCH);
+ }
+ else /* white space */
+ optarg = nargv[optind];
+ place = EMSG;
+ ++optind;
+ }
+ return (optopt); /* dump back option letter */
+}
--- /dev/null
+#ifndef ARES_GETOPT_H
+#define ARES_GETOPT_H
+
+/*
+ * Copyright (c) 1987-2001 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * A. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * B. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * C. Neither the names of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
+ * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+int ares_getopt(int nargc, char * const nargv[], const char *ostr);
+
+#undef optarg
+#undef optind
+#undef opterr
+#undef optopt
+#undef optreset
+
+#define optarg ares_optarg
+#define optind ares_optind
+#define opterr ares_opterr
+#define optopt ares_optopt
+#define optreset ares_optreset
+
+extern char *optarg;
+extern int optind;
+extern int opterr;
+extern int optopt;
+
+#endif /* ARES_GETOPT_H */
--- /dev/null
+
+/* Copyright (C) 2005 - 2010, Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. M.I.T. makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+
+#include "ares.h"
+#include "ares_private.h"
+
+int ares_getsock(ares_channel channel,
+ ares_socket_t *socks,
+ int numsocks) /* size of the 'socks' array */
+{
+ struct server_state *server;
+ int i;
+ int sockindex=0;
+ int bitmap = 0;
+ unsigned int setbits = 0xffffffff;
+
+ /* Are there any active queries? */
+ int active_queries = !ares__is_list_empty(&(channel->all_queries));
+
+ for (i = 0;
+ (i < channel->nservers) && (sockindex < ARES_GETSOCK_MAXNUM);
+ i++)
+ {
+ server = &channel->servers[i];
+ /* We only need to register interest in UDP sockets if we have
+ * outstanding queries.
+ */
+ if (active_queries && server->udp_socket != ARES_SOCKET_BAD)
+ {
+ if(sockindex >= numsocks)
+ break;
+ socks[sockindex] = server->udp_socket;
+ bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex);
+ sockindex++;
+ }
+ /* We always register for TCP events, because we want to know
+ * when the other side closes the connection, so we don't waste
+ * time trying to use a broken connection.
+ */
+ if (server->tcp_socket != ARES_SOCKET_BAD)
+ {
+ if(sockindex >= numsocks)
+ break;
+ socks[sockindex] = server->tcp_socket;
+ bitmap |= ARES_GETSOCK_READABLE(setbits, sockindex);
+
+ if (server->qhead && active_queries)
+ /* then the tcp socket is also writable! */
+ bitmap |= ARES_GETSOCK_WRITABLE(setbits, sockindex);
+
+ sockindex++;
+ }
+ }
+ return bitmap;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2007-2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef USE_WINSOCK
+#include <iphlpapi.h>
+#endif
+
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
+
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <time.h>
+#include <errno.h>
+#include "ares.h"
+#include "inet_net_pton.h"
+#include "ares_library_init.h"
+#include "ares_nowarn.h"
+#include "ares_private.h"
+
+#ifdef ANDROID
+#include <sys/system_properties.h>
+#endif
+
+#ifdef WATT32
+#undef WIN32 /* Redefined in MingW/MSVC headers */
+#endif
+
+static int init_by_options(ares_channel channel, const struct ares_options *options,
+ int optmask);
+static int init_by_environment(ares_channel channel);
+static int init_by_resolv_conf(ares_channel channel);
+static int init_by_defaults(ares_channel channel);
+
+#ifndef WATT32
+static int config_nameserver(struct server_state **servers, int *nservers,
+ char *str);
+#endif
+static int set_search(ares_channel channel, const char *str);
+static int set_options(ares_channel channel, const char *str);
+static const char *try_option(const char *p, const char *q, const char *opt);
+static int init_id_key(rc4_key* key,int key_data_len);
+
+#if !defined(WIN32) && !defined(WATT32)
+static int sortlist_alloc(struct apattern **sortlist, int *nsort, struct apattern *pat);
+static int ip_addr(const char *s, ssize_t len, struct in_addr *addr);
+static void natural_mask(struct apattern *pat);
+static int config_domain(ares_channel channel, char *str);
+static int config_lookup(ares_channel channel, const char *str,
+ const char *bindch, const char *filech);
+static int config_sortlist(struct apattern **sortlist, int *nsort,
+ const char *str);
+static char *try_config(char *s, const char *opt);
+#endif
+
+#define ARES_CONFIG_CHECK(x) (x->lookups && x->nsort > -1 && \
+ x->nservers > -1 && \
+ x->ndomains > -1 && \
+ x->ndots > -1 && x->timeout > -1 && \
+ x->tries > -1)
+
+int ares_init(ares_channel *channelptr)
+{
+ return ares_init_options(channelptr, NULL, 0);
+}
+
+int ares_init_options(ares_channel *channelptr, struct ares_options *options,
+ int optmask)
+{
+ ares_channel channel;
+ int i;
+ int status = ARES_SUCCESS;
+ struct timeval now;
+
+#ifdef CURLDEBUG
+ const char *env = getenv("CARES_MEMDEBUG");
+
+ if (env)
+ curl_memdebug(env);
+ env = getenv("CARES_MEMLIMIT");
+ if (env) {
+ char *endptr;
+ long num = strtol(env, &endptr, 10);
+ if((endptr != env) && (endptr == env + strlen(env)) && (num > 0))
+ curl_memlimit(num);
+ }
+#endif
+
+ if (ares_library_initialized() != ARES_SUCCESS)
+ return ARES_ENOTINITIALIZED;
+
+ channel = malloc(sizeof(struct ares_channeldata));
+ if (!channel) {
+ *channelptr = NULL;
+ return ARES_ENOMEM;
+ }
+
+ now = ares__tvnow();
+
+ /* Set everything to distinguished values so we know they haven't
+ * been set yet.
+ */
+ channel->flags = -1;
+ channel->timeout = -1;
+ channel->tries = -1;
+ channel->ndots = -1;
+ channel->rotate = -1;
+ channel->udp_port = -1;
+ channel->tcp_port = -1;
+ channel->socket_send_buffer_size = -1;
+ channel->socket_receive_buffer_size = -1;
+ channel->nservers = -1;
+ channel->ndomains = -1;
+ channel->nsort = -1;
+ channel->tcp_connection_generation = 0;
+ channel->lookups = NULL;
+ channel->domains = NULL;
+ channel->sortlist = NULL;
+ channel->servers = NULL;
+ channel->sock_state_cb = NULL;
+ channel->sock_state_cb_data = NULL;
+ channel->sock_create_cb = NULL;
+ channel->sock_create_cb_data = NULL;
+
+ channel->last_server = 0;
+ channel->last_timeout_processed = (time_t)now.tv_sec;
+
+ memset(&channel->local_dev_name, 0, sizeof(channel->local_dev_name));
+ channel->local_ip4 = 0;
+ memset(&channel->local_ip6, 0, sizeof(channel->local_ip6));
+
+ /* Initialize our lists of queries */
+ ares__init_list_head(&(channel->all_queries));
+ for (i = 0; i < ARES_QID_TABLE_SIZE; i++)
+ {
+ ares__init_list_head(&(channel->queries_by_qid[i]));
+ }
+ for (i = 0; i < ARES_TIMEOUT_TABLE_SIZE; i++)
+ {
+ ares__init_list_head(&(channel->queries_by_timeout[i]));
+ }
+
+ /* Initialize configuration by each of the four sources, from highest
+ * precedence to lowest.
+ */
+
+ if (status == ARES_SUCCESS) {
+ status = init_by_options(channel, options, optmask);
+ if (status != ARES_SUCCESS)
+ DEBUGF(fprintf(stderr, "Error: init_by_options failed: %s\n",
+ ares_strerror(status)));
+ }
+ if (status == ARES_SUCCESS) {
+ status = init_by_environment(channel);
+ if (status != ARES_SUCCESS)
+ DEBUGF(fprintf(stderr, "Error: init_by_environment failed: %s\n",
+ ares_strerror(status)));
+ }
+ if (status == ARES_SUCCESS) {
+ status = init_by_resolv_conf(channel);
+ if (status != ARES_SUCCESS)
+ DEBUGF(fprintf(stderr, "Error: init_by_resolv_conf failed: %s\n",
+ ares_strerror(status)));
+ }
+
+ /*
+ * No matter what failed or succeeded, seed defaults to provide
+ * useful behavior for things that we missed.
+ */
+ status = init_by_defaults(channel);
+ if (status != ARES_SUCCESS)
+ DEBUGF(fprintf(stderr, "Error: init_by_defaults failed: %s\n",
+ ares_strerror(status)));
+
+ /* Generate random key */
+
+ if (status == ARES_SUCCESS) {
+ status = init_id_key(&channel->id_key, ARES_ID_KEY_LEN);
+ if (status == ARES_SUCCESS)
+ channel->next_id = ares__generate_new_id(&channel->id_key);
+ else
+ DEBUGF(fprintf(stderr, "Error: init_id_key failed: %s\n",
+ ares_strerror(status)));
+ }
+
+ if (status != ARES_SUCCESS)
+ {
+ /* Something failed; clean up memory we may have allocated. */
+ if (channel->servers)
+ free(channel->servers);
+ if (channel->domains)
+ {
+ for (i = 0; i < channel->ndomains; i++)
+ free(channel->domains[i]);
+ free(channel->domains);
+ }
+ if (channel->sortlist)
+ free(channel->sortlist);
+ if(channel->lookups)
+ free(channel->lookups);
+ free(channel);
+ return status;
+ }
+
+ /* Trim to one server if ARES_FLAG_PRIMARY is set. */
+ if ((channel->flags & ARES_FLAG_PRIMARY) && channel->nservers > 1)
+ channel->nservers = 1;
+
+ ares__init_servers_state(channel);
+
+ *channelptr = channel;
+ return ARES_SUCCESS;
+}
+
+/* ares_dup() duplicates a channel handle with all its options and returns a
+ new channel handle */
+int ares_dup(ares_channel *dest, ares_channel src)
+{
+ struct ares_options opts;
+ struct ares_addr_node *servers;
+ int ipv6_nservers = 0;
+ int i, rc;
+ int optmask;
+
+ *dest = NULL; /* in case of failure return NULL explicitly */
+
+ /* First get the options supported by the old ares_save_options() function,
+ which is most of them */
+ rc = ares_save_options(src, &opts, &optmask);
+ if(rc)
+ return rc;
+
+ /* Then create the new channel with those options */
+ rc = ares_init_options(dest, &opts, optmask);
+
+ /* destroy the options copy to not leak any memory */
+ ares_destroy_options(&opts);
+
+ if(rc)
+ return rc;
+
+ /* Now clone the options that ares_save_options() doesn't support. */
+ (*dest)->sock_create_cb = src->sock_create_cb;
+ (*dest)->sock_create_cb_data = src->sock_create_cb_data;
+
+ strncpy((*dest)->local_dev_name, src->local_dev_name, sizeof(src->local_dev_name));
+ (*dest)->local_ip4 = src->local_ip4;
+ memcpy((*dest)->local_ip6, src->local_ip6, sizeof(src->local_ip6));
+
+ /* Full name server cloning required when not all are IPv4 */
+ for (i = 0; i < src->nservers; i++)
+ {
+ if (src->servers[i].addr.family != AF_INET) {
+ ipv6_nservers++;
+ break;
+ }
+ }
+ if (ipv6_nservers) {
+ rc = ares_get_servers(src, &servers);
+ if (rc != ARES_SUCCESS)
+ return rc;
+ rc = ares_set_servers(*dest, servers);
+ ares_free_data(servers);
+ if (rc != ARES_SUCCESS)
+ return rc;
+ }
+
+ return ARES_SUCCESS; /* everything went fine */
+}
+
+/* Save options from initialized channel */
+int ares_save_options(ares_channel channel, struct ares_options *options,
+ int *optmask)
+{
+ int i, j;
+ int ipv4_nservers = 0;
+
+ /* Zero everything out */
+ memset(options, 0, sizeof(struct ares_options));
+
+ if (!ARES_CONFIG_CHECK(channel))
+ return ARES_ENODATA;
+
+ /* Traditionally the optmask wasn't saved in the channel struct so it was
+ recreated here. ROTATE is the first option that has no struct field of
+ its own in the public config struct */
+ (*optmask) = (ARES_OPT_FLAGS|ARES_OPT_TRIES|ARES_OPT_NDOTS|
+ ARES_OPT_UDP_PORT|ARES_OPT_TCP_PORT|ARES_OPT_SOCK_STATE_CB|
+ ARES_OPT_SERVERS|ARES_OPT_DOMAINS|ARES_OPT_LOOKUPS|
+ ARES_OPT_SORTLIST|ARES_OPT_TIMEOUTMS) |
+ (channel->optmask & ARES_OPT_ROTATE);
+
+ /* Copy easy stuff */
+ options->flags = channel->flags;
+
+ /* We return full millisecond resolution but that's only because we don't
+ set the ARES_OPT_TIMEOUT anymore, only the new ARES_OPT_TIMEOUTMS */
+ options->timeout = channel->timeout;
+ options->tries = channel->tries;
+ options->ndots = channel->ndots;
+ options->udp_port = (unsigned short)channel->udp_port;
+ options->tcp_port = (unsigned short)channel->tcp_port;
+ options->sock_state_cb = channel->sock_state_cb;
+ options->sock_state_cb_data = channel->sock_state_cb_data;
+
+ /* Copy IPv4 servers */
+ if (channel->nservers) {
+ for (i = 0; i < channel->nservers; i++)
+ {
+ if (channel->servers[i].addr.family == AF_INET)
+ ipv4_nservers++;
+ }
+ if (ipv4_nservers) {
+ options->servers = malloc(ipv4_nservers * sizeof(struct server_state));
+ if (!options->servers)
+ return ARES_ENOMEM;
+ for (i = j = 0; i < channel->nservers; i++)
+ {
+ if (channel->servers[i].addr.family == AF_INET)
+ memcpy(&options->servers[j++],
+ &channel->servers[i].addr.addrV4,
+ sizeof(channel->servers[i].addr.addrV4));
+ }
+ }
+ }
+ options->nservers = ipv4_nservers;
+
+ /* copy domains */
+ if (channel->ndomains) {
+ options->domains = malloc(channel->ndomains * sizeof(char *));
+ if (!options->domains)
+ return ARES_ENOMEM;
+
+ for (i = 0; i < channel->ndomains; i++)
+ {
+ options->ndomains = i;
+ options->domains[i] = strdup(channel->domains[i]);
+ if (!options->domains[i])
+ return ARES_ENOMEM;
+ }
+ }
+ options->ndomains = channel->ndomains;
+
+ /* copy lookups */
+ if (channel->lookups) {
+ options->lookups = strdup(channel->lookups);
+ if (!options->lookups && channel->lookups)
+ return ARES_ENOMEM;
+ }
+
+ /* copy sortlist */
+ if (channel->nsort) {
+ options->sortlist = malloc(channel->nsort * sizeof(struct apattern));
+ if (!options->sortlist)
+ return ARES_ENOMEM;
+ for (i = 0; i < channel->nsort; i++)
+ options->sortlist[i] = channel->sortlist[i];
+ }
+ options->nsort = channel->nsort;
+
+ return ARES_SUCCESS;
+}
+
+static int init_by_options(ares_channel channel,
+ const struct ares_options *options,
+ int optmask)
+{
+ int i;
+
+ /* Easy stuff. */
+ if ((optmask & ARES_OPT_FLAGS) && channel->flags == -1)
+ channel->flags = options->flags;
+ if ((optmask & ARES_OPT_TIMEOUTMS) && channel->timeout == -1)
+ channel->timeout = options->timeout;
+ else if ((optmask & ARES_OPT_TIMEOUT) && channel->timeout == -1)
+ channel->timeout = options->timeout * 1000;
+ if ((optmask & ARES_OPT_TRIES) && channel->tries == -1)
+ channel->tries = options->tries;
+ if ((optmask & ARES_OPT_NDOTS) && channel->ndots == -1)
+ channel->ndots = options->ndots;
+ if ((optmask & ARES_OPT_ROTATE) && channel->rotate == -1)
+ channel->rotate = 1;
+ if ((optmask & ARES_OPT_UDP_PORT) && channel->udp_port == -1)
+ channel->udp_port = options->udp_port;
+ if ((optmask & ARES_OPT_TCP_PORT) && channel->tcp_port == -1)
+ channel->tcp_port = options->tcp_port;
+ if ((optmask & ARES_OPT_SOCK_STATE_CB) && channel->sock_state_cb == NULL)
+ {
+ channel->sock_state_cb = options->sock_state_cb;
+ channel->sock_state_cb_data = options->sock_state_cb_data;
+ }
+ if ((optmask & ARES_OPT_SOCK_SNDBUF)
+ && channel->socket_send_buffer_size == -1)
+ channel->socket_send_buffer_size = options->socket_send_buffer_size;
+ if ((optmask & ARES_OPT_SOCK_RCVBUF)
+ && channel->socket_receive_buffer_size == -1)
+ channel->socket_receive_buffer_size = options->socket_receive_buffer_size;
+
+ /* Copy the IPv4 servers, if given. */
+ if ((optmask & ARES_OPT_SERVERS) && channel->nservers == -1)
+ {
+ /* Avoid zero size allocations at any cost */
+ if (options->nservers > 0)
+ {
+ channel->servers =
+ malloc(options->nservers * sizeof(struct server_state));
+ if (!channel->servers)
+ return ARES_ENOMEM;
+ for (i = 0; i < options->nservers; i++)
+ {
+ channel->servers[i].addr.family = AF_INET;
+ memcpy(&channel->servers[i].addr.addrV4,
+ &options->servers[i],
+ sizeof(channel->servers[i].addr.addrV4));
+ }
+ }
+ channel->nservers = options->nservers;
+ }
+
+ /* Copy the domains, if given. Keep channel->ndomains consistent so
+ * we can clean up in case of error.
+ */
+ if ((optmask & ARES_OPT_DOMAINS) && channel->ndomains == -1)
+ {
+ /* Avoid zero size allocations at any cost */
+ if (options->ndomains > 0)
+ {
+ channel->domains = malloc(options->ndomains * sizeof(char *));
+ if (!channel->domains)
+ return ARES_ENOMEM;
+ for (i = 0; i < options->ndomains; i++)
+ {
+ channel->ndomains = i;
+ channel->domains[i] = strdup(options->domains[i]);
+ if (!channel->domains[i])
+ return ARES_ENOMEM;
+ }
+ }
+ channel->ndomains = options->ndomains;
+ }
+
+ /* Set lookups, if given. */
+ if ((optmask & ARES_OPT_LOOKUPS) && !channel->lookups)
+ {
+ channel->lookups = strdup(options->lookups);
+ if (!channel->lookups)
+ return ARES_ENOMEM;
+ }
+
+ /* copy sortlist */
+ if ((optmask & ARES_OPT_SORTLIST) && (channel->nsort == -1) &&
+ (options->nsort>0)) {
+ channel->sortlist = malloc(options->nsort * sizeof(struct apattern));
+ if (!channel->sortlist)
+ return ARES_ENOMEM;
+ for (i = 0; i < options->nsort; i++)
+ channel->sortlist[i] = options->sortlist[i];
+ channel->nsort = options->nsort;
+ }
+
+ channel->optmask = optmask;
+
+ return ARES_SUCCESS;
+}
+
+static int init_by_environment(ares_channel channel)
+{
+ const char *localdomain, *res_options;
+ int status;
+
+ localdomain = getenv("LOCALDOMAIN");
+ if (localdomain && channel->ndomains == -1)
+ {
+ status = set_search(channel, localdomain);
+ if (status != ARES_SUCCESS)
+ return status;
+ }
+
+ res_options = getenv("RES_OPTIONS");
+ if (res_options)
+ {
+ status = set_options(channel, res_options);
+ if (status != ARES_SUCCESS)
+ return status;
+ }
+
+ return ARES_SUCCESS;
+}
+
+#ifdef WIN32
+/*
+ * Warning: returns a dynamically allocated buffer, the user MUST
+ * use free() if the function returns 1
+ */
+static int get_res_nt(HKEY hKey, const char *subkey, char **obuf)
+{
+ /* Test for the size we need */
+ DWORD size = 0;
+ int result;
+
+ result = RegQueryValueEx(hKey, subkey, 0, NULL, NULL, &size);
+ if ((result != ERROR_SUCCESS && result != ERROR_MORE_DATA) || !size)
+ return 0;
+ *obuf = malloc(size+1);
+ if (!*obuf)
+ return 0;
+
+ if (RegQueryValueEx(hKey, subkey, 0, NULL,
+ (LPBYTE)*obuf, &size) != ERROR_SUCCESS)
+ {
+ free(*obuf);
+ return 0;
+ }
+ if (size == 1)
+ {
+ free(*obuf);
+ return 0;
+ }
+ return 1;
+}
+
+static int get_res_interfaces_nt(HKEY hKey, const char *subkey, char **obuf)
+{
+ char enumbuf[39]; /* GUIDs are 38 chars + 1 for NULL */
+ DWORD enum_size = 39;
+ int idx = 0;
+ HKEY hVal;
+
+ while (RegEnumKeyEx(hKey, idx++, enumbuf, &enum_size, 0,
+ NULL, NULL, NULL) != ERROR_NO_MORE_ITEMS)
+ {
+ int rc;
+
+ enum_size = 39;
+ if (RegOpenKeyEx(hKey, enumbuf, 0, KEY_QUERY_VALUE, &hVal) !=
+ ERROR_SUCCESS)
+ continue;
+ rc = get_res_nt(hVal, subkey, obuf);
+ RegCloseKey(hVal);
+ if (rc)
+ return 1;
+ }
+ return 0;
+}
+
+static int get_iphlpapi_dns_info (char *ret_buf, size_t ret_size)
+{
+ FIXED_INFO *fi, *newfi;
+ DWORD size = sizeof (*fi);
+ IP_ADDR_STRING *ipAddr;
+ int i, count = 0;
+ int debug = 0;
+ size_t ip_size = sizeof("255.255.255.255,")-1;
+ size_t left = ret_size;
+ char *ret = ret_buf;
+ HRESULT res;
+
+ fi = malloc(size);
+ if (!fi)
+ return 0;
+
+ res = (*ares_fpGetNetworkParams) (fi, &size);
+ if ((res != ERROR_BUFFER_OVERFLOW) && (res != ERROR_SUCCESS))
+ goto quit;
+
+ newfi = realloc(fi, size);
+ if (!newfi)
+ goto quit;
+
+ fi = newfi;
+ res = (*ares_fpGetNetworkParams) (fi, &size);
+ if (res != ERROR_SUCCESS)
+ goto quit;
+
+ if (debug)
+ {
+ printf ("Host Name: %s\n", fi->HostName);
+ printf ("Domain Name: %s\n", fi->DomainName);
+ printf ("DNS Servers:\n"
+ " %s (primary)\n", fi->DnsServerList.IpAddress.String);
+ }
+ if (strlen(fi->DnsServerList.IpAddress.String) > 0 &&
+ inet_addr(fi->DnsServerList.IpAddress.String) != INADDR_NONE &&
+ left > ip_size)
+ {
+ ret += sprintf (ret, "%s,", fi->DnsServerList.IpAddress.String);
+ left -= ret - ret_buf;
+ count++;
+ }
+
+ for (i = 0, ipAddr = fi->DnsServerList.Next; ipAddr && left > ip_size;
+ ipAddr = ipAddr->Next, i++)
+ {
+ if (inet_addr(ipAddr->IpAddress.String) != INADDR_NONE)
+ {
+ ret += sprintf (ret, "%s,", ipAddr->IpAddress.String);
+ left -= ret - ret_buf;
+ count++;
+ }
+ if (debug)
+ printf (" %s (secondary %d)\n", ipAddr->IpAddress.String, i+1);
+ }
+
+quit:
+ if (fi)
+ free(fi);
+
+ if (debug && left <= ip_size)
+ printf ("Too many nameservers. Truncating to %d addressess", count);
+ if (ret > ret_buf)
+ ret[-1] = '\0';
+ return count;
+}
+#endif
+
+static int init_by_resolv_conf(ares_channel channel)
+{
+#ifndef WATT32
+ char *line = NULL;
+#endif
+ int status = -1, nservers = 0, nsort = 0;
+ struct server_state *servers = NULL;
+ struct apattern *sortlist = NULL;
+
+#ifdef WIN32
+
+ /*
+ NameServer info via IPHLPAPI (IP helper API):
+ GetNetworkParams() should be the trusted source for this.
+ Available in Win-98/2000 and later. If that fail, fall-back to
+ registry information.
+
+ NameServer Registry:
+
+ On Windows 9X, the DNS server can be found in:
+HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP\NameServer
+
+ On Windows NT/2000/XP/2003:
+HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\NameServer
+ or
+HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DhcpNameServer
+ or
+HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\
+NameServer
+ or
+HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\{AdapterID}\
+DhcpNameServer
+ */
+
+ HKEY mykey;
+ HKEY subkey;
+ DWORD data_type;
+ DWORD bytes;
+ DWORD result;
+ char buf[256];
+
+ if (channel->nservers > -1) /* don't override ARES_OPT_SERVER */
+ return ARES_SUCCESS;
+
+ if (get_iphlpapi_dns_info(buf,sizeof(buf)) > 0)
+ {
+ status = config_nameserver(&servers, &nservers, buf);
+ if (status == ARES_SUCCESS)
+ goto okay;
+ }
+
+ if (IS_NT())
+ {
+ if (RegOpenKeyEx(
+ HKEY_LOCAL_MACHINE, WIN_NS_NT_KEY, 0,
+ KEY_READ, &mykey
+ ) == ERROR_SUCCESS)
+ {
+ RegOpenKeyEx(mykey, "Interfaces", 0,
+ KEY_QUERY_VALUE|KEY_ENUMERATE_SUB_KEYS, &subkey);
+ if (get_res_nt(mykey, NAMESERVER, &line))
+ {
+ status = config_nameserver(&servers, &nservers, line);
+ free(line);
+ }
+ else if (get_res_nt(mykey, DHCPNAMESERVER, &line))
+ {
+ status = config_nameserver(&servers, &nservers, line);
+ free(line);
+ }
+ /* Try the interfaces */
+ else if (get_res_interfaces_nt(subkey, NAMESERVER, &line))
+ {
+ status = config_nameserver(&servers, &nservers, line);
+ free(line);
+ }
+ else if (get_res_interfaces_nt(subkey, DHCPNAMESERVER, &line))
+ {
+ status = config_nameserver(&servers, &nservers, line);
+ free(line);
+ }
+ RegCloseKey(subkey);
+ RegCloseKey(mykey);
+ }
+ }
+ else
+ {
+ if (RegOpenKeyEx(
+ HKEY_LOCAL_MACHINE, WIN_NS_9X, 0,
+ KEY_READ, &mykey
+ ) == ERROR_SUCCESS)
+ {
+ if ((result = RegQueryValueEx(
+ mykey, NAMESERVER, NULL, &data_type,
+ NULL, &bytes
+ )
+ ) == ERROR_SUCCESS ||
+ result == ERROR_MORE_DATA)
+ {
+ if (bytes)
+ {
+ line = malloc(bytes+1);
+ if (RegQueryValueEx(mykey, NAMESERVER, NULL, &data_type,
+ (unsigned char *)line, &bytes) ==
+ ERROR_SUCCESS)
+ {
+ status = config_nameserver(&servers, &nservers, line);
+ }
+ free(line);
+ }
+ }
+ }
+ RegCloseKey(mykey);
+ }
+
+ if (status == ARES_SUCCESS)
+ status = ARES_EOF;
+ else
+ /* Catch the case when all the above checks fail (which happens when there
+ is no network card or the cable is unplugged) */
+ status = ARES_EFILE;
+
+#elif defined(__riscos__)
+
+ /* Under RISC OS, name servers are listed in the
+ system variable Inet$Resolvers, space separated. */
+
+ line = getenv("Inet$Resolvers");
+ status = ARES_EOF;
+ if (line) {
+ char *resolvers = strdup(line), *pos, *space;
+
+ if (!resolvers)
+ return ARES_ENOMEM;
+
+ pos = resolvers;
+ do {
+ space = strchr(pos, ' ');
+ if (space)
+ *space = '\0';
+ status = config_nameserver(&servers, &nservers, pos);
+ if (status != ARES_SUCCESS)
+ break;
+ pos = space + 1;
+ } while (space);
+
+ if (status == ARES_SUCCESS)
+ status = ARES_EOF;
+
+ free(resolvers);
+ }
+
+#elif defined(WATT32)
+ int i;
+
+ sock_init();
+ for (i = 0; def_nameservers[i]; i++)
+ ;
+ if (i == 0)
+ return ARES_SUCCESS; /* use localhost DNS server */
+
+ nservers = i;
+ servers = calloc(i, sizeof(struct server_state));
+ if (!servers)
+ return ARES_ENOMEM;
+
+ for (i = 0; def_nameservers[i]; i++)
+ servers[i].addr.addrV4.s_addr = htonl(def_nameservers[i]);
+ status = ARES_EOF;
+
+#elif defined(ANDROID)
+ char value[PROP_VALUE_MAX]="";
+ __system_property_get("net.dns1", value);
+ status = config_nameserver(&servers, &nservers, value);
+ if (status == ARES_SUCCESS)
+ status = ARES_EOF;
+#else
+ {
+ char *p;
+ FILE *fp;
+ size_t linesize;
+ int error;
+
+ /* Don't read resolv.conf and friends if we don't have to */
+ if (ARES_CONFIG_CHECK(channel))
+ return ARES_SUCCESS;
+
+ fp = fopen(PATH_RESOLV_CONF, "r");
+ if (fp) {
+ while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS)
+ {
+ if ((p = try_config(line, "domain")))
+ status = config_domain(channel, p);
+ else if ((p = try_config(line, "lookup")) && !channel->lookups)
+ status = config_lookup(channel, p, "bind", "file");
+ else if ((p = try_config(line, "search")))
+ status = set_search(channel, p);
+ else if ((p = try_config(line, "nameserver")) && channel->nservers == -1)
+ status = config_nameserver(&servers, &nservers, p);
+ else if ((p = try_config(line, "sortlist")) && channel->nsort == -1)
+ status = config_sortlist(&sortlist, &nsort, p);
+ else if ((p = try_config(line, "options")))
+ status = set_options(channel, p);
+ else
+ status = ARES_SUCCESS;
+ if (status != ARES_SUCCESS)
+ break;
+ }
+ fclose(fp);
+ }
+ else {
+ error = ERRNO;
+ switch(error) {
+ case ENOENT:
+ case ESRCH:
+ status = ARES_EOF;
+ break;
+ default:
+ DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n",
+ error, strerror(error)));
+ DEBUGF(fprintf(stderr, "Error opening file: %s\n", PATH_RESOLV_CONF));
+ status = ARES_EFILE;
+ }
+ }
+
+ if ((status == ARES_EOF) && (!channel->lookups)) {
+ /* Many systems (Solaris, Linux, BSD's) use nsswitch.conf */
+ fp = fopen("/etc/nsswitch.conf", "r");
+ if (fp) {
+ while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS)
+ {
+ if ((p = try_config(line, "hosts:")) && !channel->lookups)
+ status = config_lookup(channel, p, "dns", "files");
+ }
+ fclose(fp);
+ }
+ else {
+ error = ERRNO;
+ switch(error) {
+ case ENOENT:
+ case ESRCH:
+ status = ARES_EOF;
+ break;
+ default:
+ DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n",
+ error, strerror(error)));
+ DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/nsswitch.conf"));
+ status = ARES_EFILE;
+ }
+ }
+ }
+
+ if ((status == ARES_EOF) && (!channel->lookups)) {
+ /* Linux / GNU libc 2.x and possibly others have host.conf */
+ fp = fopen("/etc/host.conf", "r");
+ if (fp) {
+ while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS)
+ {
+ if ((p = try_config(line, "order")) && !channel->lookups)
+ status = config_lookup(channel, p, "bind", "hosts");
+ }
+ fclose(fp);
+ }
+ else {
+ error = ERRNO;
+ switch(error) {
+ case ENOENT:
+ case ESRCH:
+ status = ARES_EOF;
+ break;
+ default:
+ DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n",
+ error, strerror(error)));
+ DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/host.conf"));
+ status = ARES_EFILE;
+ }
+ }
+ }
+
+ if ((status == ARES_EOF) && (!channel->lookups)) {
+ /* Tru64 uses /etc/svc.conf */
+ fp = fopen("/etc/svc.conf", "r");
+ if (fp) {
+ while ((status = ares__read_line(fp, &line, &linesize)) == ARES_SUCCESS)
+ {
+ if ((p = try_config(line, "hosts=")) && !channel->lookups)
+ status = config_lookup(channel, p, "bind", "local");
+ }
+ fclose(fp);
+ }
+ else {
+ error = ERRNO;
+ switch(error) {
+ case ENOENT:
+ case ESRCH:
+ status = ARES_EOF;
+ break;
+ default:
+ DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n",
+ error, strerror(error)));
+ DEBUGF(fprintf(stderr, "Error opening file: %s\n", "/etc/svc.conf"));
+ status = ARES_EFILE;
+ }
+ }
+ }
+
+ if(line)
+ free(line);
+ }
+
+#endif
+
+ /* Handle errors. */
+ if (status != ARES_EOF)
+ {
+ if (servers != NULL)
+ free(servers);
+ if (sortlist != NULL)
+ free(sortlist);
+ return status;
+ }
+
+ /* If we got any name server entries, fill them in. */
+#ifdef WIN32
+okay:
+#endif
+ if (servers)
+ {
+ channel->servers = servers;
+ channel->nservers = nservers;
+ }
+
+ /* If we got any sortlist entries, fill them in. */
+ if (sortlist)
+ {
+ channel->sortlist = sortlist;
+ channel->nsort = nsort;
+ }
+
+ return ARES_SUCCESS;
+}
+
+static int init_by_defaults(ares_channel channel)
+{
+ char *hostname = NULL;
+ int rc = ARES_SUCCESS;
+#ifdef HAVE_GETHOSTNAME
+ char *dot;
+#endif
+
+ if (channel->flags == -1)
+ channel->flags = 0;
+ if (channel->timeout == -1)
+ channel->timeout = DEFAULT_TIMEOUT;
+ if (channel->tries == -1)
+ channel->tries = DEFAULT_TRIES;
+ if (channel->ndots == -1)
+ channel->ndots = 1;
+ if (channel->rotate == -1)
+ channel->rotate = 0;
+ if (channel->udp_port == -1)
+ channel->udp_port = htons(NAMESERVER_PORT);
+ if (channel->tcp_port == -1)
+ channel->tcp_port = htons(NAMESERVER_PORT);
+
+ if (channel->nservers == -1) {
+ /* If nobody specified servers, try a local named. */
+ channel->servers = malloc(sizeof(struct server_state));
+ if (!channel->servers) {
+ rc = ARES_ENOMEM;
+ goto error;
+ }
+ channel->servers[0].addr.family = AF_INET;
+ channel->servers[0].addr.addrV4.s_addr = htonl(INADDR_LOOPBACK);
+ channel->nservers = 1;
+ }
+
+#ifdef ENAMETOOLONG
+#define toolong(x) (x == -1) && ((ENAMETOOLONG == errno) || (EINVAL == errno))
+#else
+#define toolong(x) (x == -1) && (EINVAL == errno)
+#endif
+
+ if (channel->ndomains == -1) {
+ /* Derive a default domain search list from the kernel hostname,
+ * or set it to empty if the hostname isn't helpful.
+ */
+ size_t len = 64;
+ int res;
+ channel->ndomains = 0; /* default to none */
+
+#ifdef HAVE_GETHOSTNAME
+ hostname = malloc(len);
+ if(!hostname) {
+ rc = ARES_ENOMEM;
+ goto error;
+ }
+
+ do {
+ res = gethostname(hostname, len);
+
+ if(toolong(res)) {
+ char *p;
+ len *= 2;
+ p = realloc(hostname, len);
+ if(!p) {
+ rc = ARES_ENOMEM;
+ goto error;
+ }
+ hostname = p;
+ continue;
+ }
+ else if(res) {
+ rc = ARES_EBADNAME;
+ goto error;
+ }
+
+ } while(0);
+
+ dot = strchr(hostname, '.');
+ if (dot) {
+ /* a dot was found */
+ channel->domains = malloc(sizeof(char *));
+ if (!channel->domains) {
+ rc = ARES_ENOMEM;
+ goto error;
+ }
+ channel->domains[0] = strdup(dot + 1);
+ if (!channel->domains[0]) {
+ rc = ARES_ENOMEM;
+ goto error;
+ }
+ channel->ndomains = 1;
+ }
+#endif
+ }
+
+ if (channel->nsort == -1) {
+ channel->sortlist = NULL;
+ channel->nsort = 0;
+ }
+
+ if (!channel->lookups) {
+ channel->lookups = strdup("fb");
+ if (!channel->lookups)
+ rc = ARES_ENOMEM;
+ }
+
+ error:
+ if(rc) {
+ if(channel->servers)
+ free(channel->servers);
+
+ if(channel->domains && channel->domains[0])
+ free(channel->domains[0]);
+ if(channel->domains)
+ free(channel->domains);
+ if(channel->lookups)
+ free(channel->lookups);
+ }
+
+ if(hostname)
+ free(hostname);
+
+ return rc;
+}
+
+#if !defined(WIN32) && !defined(WATT32)
+static int config_domain(ares_channel channel, char *str)
+{
+ char *q;
+
+ /* Set a single search domain. */
+ q = str;
+ while (*q && !ISSPACE(*q))
+ q++;
+ *q = '\0';
+ return set_search(channel, str);
+}
+
+#if defined(__INTEL_COMPILER) && (__INTEL_COMPILER == 910) && \
+ defined(__OPTIMIZE__) && defined(__unix__) && defined(__i386__)
+ /* workaround icc 9.1 optimizer issue */
+# define vqualifier volatile
+#else
+# define vqualifier
+#endif
+
+static int config_lookup(ares_channel channel, const char *str,
+ const char *bindch, const char *filech)
+{
+ char lookups[3], *l;
+ const char *vqualifier p;
+
+ /* Set the lookup order. Only the first letter of each work
+ * is relevant, and it has to be "b" for DNS or "f" for the
+ * host file. Ignore everything else.
+ */
+ l = lookups;
+ p = str;
+ while (*p)
+ {
+ if ((*p == *bindch || *p == *filech) && l < lookups + 2) {
+ if (*p == *bindch) *l++ = 'b';
+ else *l++ = 'f';
+ }
+ while (*p && !ISSPACE(*p) && (*p != ','))
+ p++;
+ while (*p && (ISSPACE(*p) || (*p == ',')))
+ p++;
+ }
+ *l = '\0';
+ channel->lookups = strdup(lookups);
+ return (channel->lookups) ? ARES_SUCCESS : ARES_ENOMEM;
+}
+#endif /* !WIN32 & !WATT32 */
+
+#ifndef WATT32
+static int config_nameserver(struct server_state **servers, int *nservers,
+ char *str)
+{
+ struct ares_addr host;
+ struct server_state *newserv;
+ char *p, *txtaddr;
+ /* On Windows, there may be more than one nameserver specified in the same
+ * registry key, so we parse input as a space or comma seperated list.
+ */
+ for (p = str; p;)
+ {
+ /* Skip whitespace and commas. */
+ while (*p && (ISSPACE(*p) || (*p == ',')))
+ p++;
+ if (!*p)
+ /* No more input, done. */
+ break;
+
+ /* Pointer to start of IPv4 or IPv6 address part. */
+ txtaddr = p;
+
+ /* Advance past this address. */
+ while (*p && !ISSPACE(*p) && (*p != ','))
+ p++;
+ if (*p)
+ /* Null terminate this address. */
+ *p++ = '\0';
+ else
+ /* Reached end of input, done when this address is processed. */
+ p = NULL;
+
+ /* Convert textual address to binary format. */
+ if (ares_inet_pton(AF_INET, txtaddr, &host.addrV4) == 1)
+ host.family = AF_INET;
+ else if (ares_inet_pton(AF_INET6, txtaddr, &host.addrV6) == 1)
+ host.family = AF_INET6;
+ else
+ continue;
+
+ /* Resize servers state array. */
+ newserv = realloc(*servers, (*nservers + 1) *
+ sizeof(struct server_state));
+ if (!newserv)
+ return ARES_ENOMEM;
+
+ /* Store address data. */
+ newserv[*nservers].addr.family = host.family;
+ if (host.family == AF_INET)
+ memcpy(&newserv[*nservers].addr.addrV4, &host.addrV4,
+ sizeof(host.addrV4));
+ else
+ memcpy(&newserv[*nservers].addr.addrV6, &host.addrV6,
+ sizeof(host.addrV6));
+
+ /* Update arguments. */
+ *servers = newserv;
+ *nservers += 1;
+ }
+
+ return ARES_SUCCESS;
+}
+
+#ifndef WIN32
+static int config_sortlist(struct apattern **sortlist, int *nsort,
+ const char *str)
+{
+ struct apattern pat;
+ const char *q;
+
+ /* Add sortlist entries. */
+ while (*str && *str != ';')
+ {
+ int bits;
+ char ipbuf[16], ipbufpfx[32];
+ /* Find just the IP */
+ q = str;
+ while (*q && *q != '/' && *q != ';' && !ISSPACE(*q))
+ q++;
+ memcpy(ipbuf, str, q-str);
+ ipbuf[q-str] = '\0';
+ /* Find the prefix */
+ if (*q == '/')
+ {
+ const char *str2 = q+1;
+ while (*q && *q != ';' && !ISSPACE(*q))
+ q++;
+ memcpy(ipbufpfx, str, q-str);
+ ipbufpfx[q-str] = '\0';
+ str = str2;
+ }
+ else
+ ipbufpfx[0] = '\0';
+ /* Lets see if it is CIDR */
+ /* First we'll try IPv6 */
+ if ((bits = ares_inet_net_pton(AF_INET6, ipbufpfx[0] ? ipbufpfx : ipbuf,
+ &pat.addrV6,
+ sizeof(pat.addrV6))) > 0)
+ {
+ pat.type = PATTERN_CIDR;
+ pat.mask.bits = (unsigned short)bits;
+ pat.family = AF_INET6;
+ if (!sortlist_alloc(sortlist, nsort, &pat))
+ return ARES_ENOMEM;
+ }
+ if (ipbufpfx[0] &&
+ (bits = ares_inet_net_pton(AF_INET, ipbufpfx, &pat.addrV4,
+ sizeof(pat.addrV4))) > 0)
+ {
+ pat.type = PATTERN_CIDR;
+ pat.mask.bits = (unsigned short)bits;
+ pat.family = AF_INET;
+ if (!sortlist_alloc(sortlist, nsort, &pat))
+ return ARES_ENOMEM;
+ }
+ /* See if it is just a regular IP */
+ else if (ip_addr(ipbuf, q-str, &pat.addrV4) == 0)
+ {
+ if (ipbufpfx[0])
+ {
+ memcpy(ipbuf, str, q-str);
+ ipbuf[q-str] = '\0';
+ if (ip_addr(ipbuf, q-str, &pat.mask.addr4) != 0)
+ natural_mask(&pat);
+ }
+ else
+ natural_mask(&pat);
+ pat.family = AF_INET;
+ pat.type = PATTERN_MASK;
+ if (!sortlist_alloc(sortlist, nsort, &pat))
+ return ARES_ENOMEM;
+ }
+ else
+ {
+ while (*q && *q != ';' && !ISSPACE(*q))
+ q++;
+ }
+ str = q;
+ while (ISSPACE(*str))
+ str++;
+ }
+
+ return ARES_SUCCESS;
+}
+#endif /* !WIN32 */
+#endif /* !WATT32 */
+
+static int set_search(ares_channel channel, const char *str)
+{
+ int n;
+ const char *p, *q;
+
+ if(channel->ndomains != -1) {
+ /* if we already have some domains present, free them first */
+ for(n=0; n < channel->ndomains; n++)
+ free(channel->domains[n]);
+ free(channel->domains);
+ channel->domains = NULL;
+ channel->ndomains = -1;
+ }
+
+ /* Count the domains given. */
+ n = 0;
+ p = str;
+ while (*p)
+ {
+ while (*p && !ISSPACE(*p))
+ p++;
+ while (ISSPACE(*p))
+ p++;
+ n++;
+ }
+
+ if (!n)
+ {
+ channel->ndomains = 0;
+ return ARES_SUCCESS;
+ }
+
+ channel->domains = malloc(n * sizeof(char *));
+ if (!channel->domains)
+ return ARES_ENOMEM;
+
+ /* Now copy the domains. */
+ n = 0;
+ p = str;
+ while (*p)
+ {
+ channel->ndomains = n;
+ q = p;
+ while (*q && !ISSPACE(*q))
+ q++;
+ channel->domains[n] = malloc(q - p + 1);
+ if (!channel->domains[n])
+ return ARES_ENOMEM;
+ memcpy(channel->domains[n], p, q - p);
+ channel->domains[n][q - p] = 0;
+ p = q;
+ while (ISSPACE(*p))
+ p++;
+ n++;
+ }
+ channel->ndomains = n;
+
+ return ARES_SUCCESS;
+}
+
+static int set_options(ares_channel channel, const char *str)
+{
+ const char *p, *q, *val;
+
+ p = str;
+ while (*p)
+ {
+ q = p;
+ while (*q && !ISSPACE(*q))
+ q++;
+ val = try_option(p, q, "ndots:");
+ if (val && channel->ndots == -1)
+ channel->ndots = aresx_sltosi(strtol(val, NULL, 10));
+ val = try_option(p, q, "retrans:");
+ if (val && channel->timeout == -1)
+ channel->timeout = aresx_sltosi(strtol(val, NULL, 10));
+ val = try_option(p, q, "retry:");
+ if (val && channel->tries == -1)
+ channel->tries = aresx_sltosi(strtol(val, NULL, 10));
+ val = try_option(p, q, "rotate");
+ if (val && channel->rotate == -1)
+ channel->rotate = 1;
+ p = q;
+ while (ISSPACE(*p))
+ p++;
+ }
+
+ return ARES_SUCCESS;
+}
+
+static const char *try_option(const char *p, const char *q, const char *opt)
+{
+ size_t len = strlen(opt);
+ return ((size_t)(q - p) >= len && !strncmp(p, opt, len)) ? &p[len] : NULL;
+}
+
+#if !defined(WIN32) && !defined(WATT32)
+static char *try_config(char *s, const char *opt)
+{
+ size_t len;
+ char *p;
+ char *q;
+
+ if (!s || !opt)
+ /* no line or no option */
+ return NULL;
+
+ /* trim line comment */
+ p = s;
+ while (*p && (*p != '#'))
+ p++;
+ *p = '\0';
+
+ /* trim trailing whitespace */
+ q = p - 1;
+ while ((q >= s) && ISSPACE(*q))
+ q--;
+ *++q = '\0';
+
+ /* skip leading whitespace */
+ p = s;
+ while (*p && ISSPACE(*p))
+ p++;
+
+ if (!*p)
+ /* empty line */
+ return NULL;
+
+ if ((len = strlen(opt)) == 0)
+ /* empty option */
+ return NULL;
+
+ if (strncmp(p, opt, len) != 0)
+ /* line and option do not match */
+ return NULL;
+
+ /* skip over given option name */
+ p += len;
+
+ if (!*p)
+ /* no option value */
+ return NULL;
+
+ if ((opt[len-1] != ':') && (opt[len-1] != '=') && !ISSPACE(*p))
+ /* whitespace between option name and value is mandatory
+ for given option names which do not end with ':' or '=' */
+ return NULL;
+
+ /* skip over whitespace */
+ while (*p && ISSPACE(*p))
+ p++;
+
+ if (!*p)
+ /* no option value */
+ return NULL;
+
+ /* return pointer to option value */
+ return p;
+}
+
+static int sortlist_alloc(struct apattern **sortlist, int *nsort,
+ struct apattern *pat)
+{
+ struct apattern *newsort;
+ newsort = realloc(*sortlist, (*nsort + 1) * sizeof(struct apattern));
+ if (!newsort)
+ return 0;
+ newsort[*nsort] = *pat;
+ *sortlist = newsort;
+ (*nsort)++;
+ return 1;
+}
+
+static int ip_addr(const char *ipbuf, ssize_t len, struct in_addr *addr)
+{
+
+ /* Four octets and three periods yields at most 15 characters. */
+ if (len > 15)
+ return -1;
+
+ addr->s_addr = inet_addr(ipbuf);
+ if (addr->s_addr == INADDR_NONE && strcmp(ipbuf, "255.255.255.255") != 0)
+ return -1;
+ return 0;
+}
+
+static void natural_mask(struct apattern *pat)
+{
+ struct in_addr addr;
+
+ /* Store a host-byte-order copy of pat in a struct in_addr. Icky,
+ * but portable.
+ */
+ addr.s_addr = ntohl(pat->addrV4.s_addr);
+
+ /* This is out of date in the CIDR world, but some people might
+ * still rely on it.
+ */
+ if (IN_CLASSA(addr.s_addr))
+ pat->mask.addr4.s_addr = htonl(IN_CLASSA_NET);
+ else if (IN_CLASSB(addr.s_addr))
+ pat->mask.addr4.s_addr = htonl(IN_CLASSB_NET);
+ else
+ pat->mask.addr4.s_addr = htonl(IN_CLASSC_NET);
+}
+#endif /* !WIN32 && !WATT32 */
+
+/* initialize an rc4 key. If possible a cryptographically secure random key
+ is generated using a suitable function (for example win32's RtlGenRandom as
+ described in
+ http://blogs.msdn.com/michael_howard/archive/2005/01/14/353379.aspx
+ otherwise the code defaults to cross-platform albeit less secure mechanism
+ using rand
+*/
+static void randomize_key(unsigned char* key,int key_data_len)
+{
+ int randomized = 0;
+ int counter=0;
+#ifdef WIN32
+ BOOLEAN res;
+ if (ares_fpSystemFunction036)
+ {
+ res = (*ares_fpSystemFunction036) (key, key_data_len);
+ if (res)
+ randomized = 1;
+ }
+#else /* !WIN32 */
+#ifdef RANDOM_FILE
+ FILE *f = fopen(RANDOM_FILE, "rb");
+ if(f) {
+ counter = aresx_uztosi(fread(key, 1, key_data_len, f));
+ fclose(f);
+ }
+#endif
+#endif /* WIN32 */
+
+ if ( !randomized ) {
+ for (;counter<key_data_len;counter++)
+ key[counter]=(unsigned char)(rand() % 256);
+ }
+}
+
+static int init_id_key(rc4_key* key,int key_data_len)
+{
+ unsigned char index1;
+ unsigned char index2;
+ unsigned char* state;
+ short counter;
+ unsigned char *key_data_ptr = 0;
+
+ key_data_ptr = calloc(1,key_data_len);
+ if (!key_data_ptr)
+ return ARES_ENOMEM;
+
+ state = &key->state[0];
+ for(counter = 0; counter < 256; counter++)
+ /* unnecessary AND but it keeps some compilers happier */
+ state[counter] = (unsigned char)(counter & 0xff);
+ randomize_key(key->state,key_data_len);
+ key->x = 0;
+ key->y = 0;
+ index1 = 0;
+ index2 = 0;
+ for(counter = 0; counter < 256; counter++)
+ {
+ index2 = (unsigned char)((key_data_ptr[index1] + state[counter] +
+ index2) % 256);
+ ARES_SWAP_BYTE(&state[counter], &state[index2]);
+
+ index1 = (unsigned char)((index1 + 1) % key_data_len);
+ }
+ free(key_data_ptr);
+ return ARES_SUCCESS;
+}
+
+unsigned short ares__generate_new_id(rc4_key* key)
+{
+ unsigned short r=0;
+ ares__rc4(key, (unsigned char *)&r, sizeof(r));
+ return r;
+}
+
+void ares_set_local_ip4(ares_channel channel, unsigned int local_ip)
+{
+ channel->local_ip4 = local_ip;
+}
+
+/* local_ip6 should be 16 bytes in length */
+void ares_set_local_ip6(ares_channel channel,
+ const unsigned char* local_ip6)
+{
+ memcpy(&channel->local_ip6, local_ip6, sizeof(channel->local_ip6));
+}
+
+/* local_dev_name should be null terminated. */
+void ares_set_local_dev(ares_channel channel,
+ const char* local_dev_name)
+{
+ strncpy(channel->local_dev_name, local_dev_name,
+ sizeof(channel->local_dev_name));
+ channel->local_dev_name[sizeof(channel->local_dev_name) - 1] = 0;
+}
+
+
+void ares_set_socket_callback(ares_channel channel,
+ ares_sock_create_callback cb,
+ void *data)
+{
+ channel->sock_create_cb = cb;
+ channel->sock_create_cb_data = data;
+}
+
+void ares__init_servers_state(ares_channel channel)
+{
+ struct server_state *server;
+ int i;
+
+ for (i = 0; i < channel->nservers; i++)
+ {
+ server = &channel->servers[i];
+ server->udp_socket = ARES_SOCKET_BAD;
+ server->tcp_socket = ARES_SOCKET_BAD;
+ server->tcp_connection_generation = ++channel->tcp_connection_generation;
+ server->tcp_lenbuf_pos = 0;
+ server->tcp_buffer_pos = 0;
+ server->tcp_buffer = NULL;
+ server->tcp_length = 0;
+ server->qhead = NULL;
+ server->qtail = NULL;
+ ares__init_list_head(&server->queries_to_server);
+ server->channel = channel;
+ server->is_broken = 0;
+ }
+}
--- /dev/null
+
+/* Copyright (C) 2005 by Dominick Meglio
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#ifndef ARES_IPV6_H
+#define ARES_IPV6_H
+
+#ifndef HAVE_PF_INET6
+#define PF_INET6 AF_INET6
+#endif
+
+#ifndef HAVE_STRUCT_SOCKADDR_IN6
+struct sockaddr_in6
+{
+ unsigned short sin6_family;
+ unsigned short sin6_port;
+ unsigned long sin6_flowinfo;
+ struct ares_in6_addr sin6_addr;
+ unsigned int sin6_scope_id;
+};
+#endif
+
+#ifndef HAVE_STRUCT_ADDRINFO
+struct addrinfo
+{
+ int ai_flags;
+ int ai_family;
+ int ai_socktype;
+ int ai_protocol;
+ ares_socklen_t ai_addrlen; /* Follow rfc3493 struct addrinfo */
+ char *ai_canonname;
+ struct sockaddr *ai_addr;
+ struct addrinfo *ai_next;
+};
+#endif
+
+#ifndef NS_IN6ADDRSZ
+#if SIZEOF_STRUCT_IN6_ADDR == 0
+/* We cannot have it set to zero, so we pick a fixed value here */
+#define NS_IN6ADDRSZ 16
+#else
+#define NS_IN6ADDRSZ SIZEOF_STRUCT_IN6_ADDR
+#endif
+#endif
+
+#ifndef NS_INADDRSZ
+#define NS_INADDRSZ SIZEOF_STRUCT_IN_ADDR
+#endif
+
+#ifndef NS_INT16SZ
+#define NS_INT16SZ 2
+#endif
+
+#ifndef IF_NAMESIZE
+#ifdef IFNAMSIZ
+#define IF_NAMESIZE IFNAMSIZ
+#else
+#define IF_NAMESIZE 256
+#endif
+#endif
+
+/* Defined in ares_net_pton.c for no particular reason. */
+extern const struct ares_in6_addr ares_in6addr_any; /* :: */
+
+
+#endif /* ARES_IPV6_H */
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2004-2009 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#include "ares.h"
+#include "ares_library_init.h"
+#include "ares_private.h"
+
+/* library-private global and unique instance vars */
+
+#ifdef USE_WINSOCK
+fpGetNetworkParams_t ares_fpGetNetworkParams = ZERO_NULL;
+fpSystemFunction036_t ares_fpSystemFunction036 = ZERO_NULL;
+#endif
+
+/* library-private global vars with source visibility restricted to this file */
+
+static unsigned int ares_initialized;
+static int ares_init_flags;
+
+#ifdef USE_WINSOCK
+static HMODULE hnd_iphlpapi;
+static HMODULE hnd_advapi32;
+#endif
+
+
+static int ares_win32_init(void)
+{
+#ifdef USE_WINSOCK
+
+ hnd_iphlpapi = 0;
+ hnd_iphlpapi = LoadLibrary("iphlpapi.dll");
+ if (!hnd_iphlpapi)
+ return ARES_ELOADIPHLPAPI;
+
+ ares_fpGetNetworkParams = (fpGetNetworkParams_t)
+ GetProcAddress(hnd_iphlpapi, "GetNetworkParams");
+ if (!ares_fpGetNetworkParams)
+ {
+ FreeLibrary(hnd_iphlpapi);
+ return ARES_EADDRGETNETWORKPARAMS;
+ }
+
+ /*
+ * When advapi32.dll is unavailable or advapi32.dll has no SystemFunction036,
+ * also known as RtlGenRandom, which is the case for Windows versions prior
+ * to WinXP then c-ares uses portable rand() function. Then don't error here.
+ */
+
+ hnd_advapi32 = 0;
+ hnd_advapi32 = LoadLibrary("advapi32.dll");
+ if (hnd_advapi32)
+ {
+ ares_fpSystemFunction036 = (fpSystemFunction036_t)
+ GetProcAddress(hnd_advapi32, "SystemFunction036");
+ }
+
+#endif
+ return ARES_SUCCESS;
+}
+
+
+static void ares_win32_cleanup(void)
+{
+#ifdef USE_WINSOCK
+ if (hnd_advapi32)
+ FreeLibrary(hnd_advapi32);
+ if (hnd_iphlpapi)
+ FreeLibrary(hnd_iphlpapi);
+#endif
+}
+
+
+int ares_library_init(int flags)
+{
+ int res;
+
+ if (ares_initialized)
+ return ARES_SUCCESS;
+ ares_initialized++;
+
+ if (flags & ARES_LIB_INIT_WIN32)
+ {
+ res = ares_win32_init();
+ if (res != ARES_SUCCESS)
+ return res;
+ }
+
+ ares_init_flags = flags;
+
+ return ARES_SUCCESS;
+}
+
+
+void ares_library_cleanup(void)
+{
+ if (!ares_initialized)
+ return;
+ ares_initialized--;
+
+ if (ares_init_flags & ARES_LIB_INIT_WIN32)
+ ares_win32_cleanup();
+
+ ares_init_flags = ARES_LIB_INIT_NONE;
+}
+
+
+int ares_library_initialized(void)
+{
+#ifdef USE_WINSOCK
+ if (!ares_initialized)
+ return ARES_ENOTINITIALIZED;
+#endif
+ return ARES_SUCCESS;
+}
+
+
--- /dev/null
+#ifndef HEADER_CARES_LIBRARY_INIT_H
+#define HEADER_CARES_LIBRARY_INIT_H
+
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2004-2009 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef USE_WINSOCK
+
+#include <iphlpapi.h>
+
+typedef DWORD (WINAPI *fpGetNetworkParams_t) (FIXED_INFO*, DWORD*);
+typedef BOOLEAN (APIENTRY *fpSystemFunction036_t) (void*, ULONG);
+
+/* Forward-declaration of variables defined in ares_library_init.c */
+/* that are global and unique instances for whole c-ares library. */
+
+extern fpGetNetworkParams_t ares_fpGetNetworkParams;
+extern fpSystemFunction036_t ares_fpSystemFunction036;
+
+#endif /* USE_WINSOCK */
+
+#endif /* HEADER_CARES_LIBRARY_INIT_H */
+
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#include "ares.h"
+#include "ares_private.h"
+
+/* Routines for managing doubly-linked circular linked lists with a
+ * dummy head.
+ */
+
+/* Initialize a new head node */
+void ares__init_list_head(struct list_node* head) {
+ head->prev = head;
+ head->next = head;
+ head->data = NULL;
+}
+
+/* Initialize a list node */
+void ares__init_list_node(struct list_node* node, void* d) {
+ node->prev = NULL;
+ node->next = NULL;
+ node->data = d;
+}
+
+/* Returns true iff the given list is empty */
+int ares__is_list_empty(struct list_node* head) {
+ return ((head->next == head) && (head->prev == head));
+}
+
+/* Inserts new_node before old_node */
+void ares__insert_in_list(struct list_node* new_node,
+ struct list_node* old_node) {
+ new_node->next = old_node;
+ new_node->prev = old_node->prev;
+ old_node->prev->next = new_node;
+ old_node->prev = new_node;
+}
+
+/* Removes the node from the list it's in, if any */
+void ares__remove_from_list(struct list_node* node) {
+ if (node->next != NULL) {
+ node->prev->next = node->next;
+ node->next->prev = node->prev;
+ node->prev = NULL;
+ node->next = NULL;
+ }
+}
+
+/* Swap the contents of two lists */
+void ares__swap_lists(struct list_node* head_a,
+ struct list_node* head_b) {
+ int is_a_empty = ares__is_list_empty(head_a);
+ int is_b_empty = ares__is_list_empty(head_b);
+ struct list_node old_a = *head_a;
+ struct list_node old_b = *head_b;
+
+ if (is_a_empty) {
+ ares__init_list_head(head_b);
+ } else {
+ *head_b = old_a;
+ old_a.next->prev = head_b;
+ old_a.prev->next = head_b;
+ }
+ if (is_b_empty) {
+ ares__init_list_head(head_a);
+ } else {
+ *head_a = old_b;
+ old_b.next->prev = head_a;
+ old_b.prev->next = head_a;
+ }
+}
--- /dev/null
+#ifndef __ARES_LLIST_H
+#define __ARES_LLIST_H
+
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+
+/* Node definition for circular, doubly-linked list */
+struct list_node {
+ struct list_node *prev;
+ struct list_node *next;
+ void* data;
+};
+
+void ares__init_list_head(struct list_node* head);
+
+void ares__init_list_node(struct list_node* node, void* d);
+
+int ares__is_list_empty(struct list_node* head);
+
+void ares__insert_in_list(struct list_node* new_node,
+ struct list_node* old_node);
+
+void ares__remove_from_list(struct list_node* node);
+
+void ares__swap_lists(struct list_node* head_a,
+ struct list_node* head_b);
+
+#endif /* __ARES_LLIST_H */
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include "ares.h"
+#include "ares_dns.h"
+#include "ares_private.h"
+
+/* Header format, from RFC 1035:
+ * 1 1 1 1 1 1
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ * | ID |
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ * |QR| Opcode |AA|TC|RD|RA| Z | RCODE |
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ * | QDCOUNT |
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ * | ANCOUNT |
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ * | NSCOUNT |
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ * | ARCOUNT |
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ *
+ * AA, TC, RA, and RCODE are only set in responses. Brief description
+ * of the remaining fields:
+ * ID Identifier to match responses with queries
+ * QR Query (0) or response (1)
+ * Opcode For our purposes, always QUERY
+ * RD Recursion desired
+ * Z Reserved (zero)
+ * QDCOUNT Number of queries
+ * ANCOUNT Number of answers
+ * NSCOUNT Number of name server records
+ * ARCOUNT Number of additional records
+ *
+ * Question format, from RFC 1035:
+ * 1 1 1 1 1 1
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ * | |
+ * / QNAME /
+ * / /
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ * | QTYPE |
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ * | QCLASS |
+ * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+ *
+ * The query name is encoded as a series of labels, each represented
+ * as a one-byte length (maximum 63) followed by the text of the
+ * label. The list is terminated by a label of length zero (which can
+ * be thought of as the root domain).
+ */
+
+int ares_mkquery(const char *name, int dnsclass, int type, unsigned short id,
+ int rd, unsigned char **buf, int *buflen)
+{
+ int len;
+ unsigned char *q;
+ const char *p;
+
+ /* Set our results early, in case we bail out early with an error. */
+ *buflen = 0;
+ *buf = NULL;
+
+ /* Compute the length of the encoded name so we can check buflen.
+ * Start counting at 1 for the zero-length label at the end. */
+ len = 1;
+ for (p = name; *p; p++)
+ {
+ if (*p == '\\' && *(p + 1) != 0)
+ p++;
+ len++;
+ }
+ /* If there are n periods in the name, there are n + 1 labels, and
+ * thus n + 1 length fields, unless the name is empty or ends with a
+ * period. So add 1 unless name is empty or ends with a period.
+ */
+ if (*name && *(p - 1) != '.')
+ len++;
+
+ /* Immediately reject names that are longer than the maximum of 255
+ * bytes that's specified in RFC 1035 ("To simplify implementations,
+ * the total length of a domain name (i.e., label octets and label
+ * length octets) is restricted to 255 octets or less."). We aren't
+ * doing this just to be a stickler about RFCs. For names that are
+ * too long, 'dnscache' closes its TCP connection to us immediately
+ * (when using TCP) and ignores the request when using UDP, and
+ * BIND's named returns ServFail (TCP or UDP). Sending a request
+ * that we know will cause 'dnscache' to close the TCP connection is
+ * painful, since that makes any other outstanding requests on that
+ * connection fail. And sending a UDP request that we know
+ * 'dnscache' will ignore is bad because resources will be tied up
+ * until we time-out the request.
+ */
+ if (len > MAXCDNAME)
+ return ARES_EBADNAME;
+
+ *buflen = len + HFIXEDSZ + QFIXEDSZ;
+ *buf = malloc(*buflen);
+ if (!*buf)
+ return ARES_ENOMEM;
+
+ /* Set up the header. */
+ q = *buf;
+ memset(q, 0, HFIXEDSZ);
+ DNS_HEADER_SET_QID(q, id);
+ DNS_HEADER_SET_OPCODE(q, QUERY);
+ if (rd) {
+ DNS_HEADER_SET_RD(q, 1);
+ }
+ else {
+ DNS_HEADER_SET_RD(q, 0);
+ }
+ DNS_HEADER_SET_QDCOUNT(q, 1);
+
+ /* A name of "." is a screw case for the loop below, so adjust it. */
+ if (strcmp(name, ".") == 0)
+ name++;
+
+ /* Start writing out the name after the header. */
+ q += HFIXEDSZ;
+ while (*name)
+ {
+ if (*name == '.')
+ return ARES_EBADNAME;
+
+ /* Count the number of bytes in this label. */
+ len = 0;
+ for (p = name; *p && *p != '.'; p++)
+ {
+ if (*p == '\\' && *(p + 1) != 0)
+ p++;
+ len++;
+ }
+ if (len > MAXLABEL)
+ return ARES_EBADNAME;
+
+ /* Encode the length and copy the data. */
+ *q++ = (unsigned char)len;
+ for (p = name; *p && *p != '.'; p++)
+ {
+ if (*p == '\\' && *(p + 1) != 0)
+ p++;
+ *q++ = *p;
+ }
+
+ /* Go to the next label and repeat, unless we hit the end. */
+ if (!*p)
+ break;
+ name = p + 1;
+ }
+
+ /* Add the zero-length label at the end. */
+ *q++ = 0;
+
+ /* Finish off the question with the type and class. */
+ DNS_QUESTION_SET_TYPE(q, type);
+ DNS_QUESTION_SET_CLASS(q, dnsclass);
+
+ return ARES_SUCCESS;
+}
--- /dev/null
+
+/* Copyright (C) 2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+
+#include "ares_setup.h"
+
+#include "ares_nowarn.h"
+
+#define CARES_MASK_UINT (~(unsigned int) 0)
+#define CARES_MASK_SINT (CARES_MASK_UINT >> 1)
+
+/*
+** size_t to signed int
+*/
+
+int aresx_uztosi(size_t uznum)
+{
+#ifdef __INTEL_COMPILER
+# pragma warning(push)
+# pragma warning(disable:810) /* conversion may lose significant bits */
+#endif
+
+ return (int)(uznum & (size_t) CARES_MASK_SINT);
+
+#ifdef __INTEL_COMPILER
+# pragma warning(pop)
+#endif
+}
+
+/*
+** signed long to signed int
+*/
+
+int aresx_sltosi(long slnum)
+{
+#ifdef __INTEL_COMPILER
+# pragma warning(push)
+# pragma warning(disable:810) /* conversion may lose significant bits */
+#endif
+
+ return (int)(slnum & (long) CARES_MASK_SINT);
+
+#ifdef __INTEL_COMPILER
+# pragma warning(pop)
+#endif
+}
--- /dev/null
+#ifndef HEADER_CARES_NOWARN_H
+#define HEADER_CARES_NOWARN_H
+
+
+/* Copyright (C) 2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+int aresx_uztosi(size_t uznum);
+
+int aresx_sltosi(long slnum);
+
+#endif /* HEADER_CARES_NOWARN_H */
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2008-2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+
+#include "ares_setup.h"
+
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+
+#include "ares.h"
+#include "ares_data.h"
+#include "inet_net_pton.h"
+#include "ares_private.h"
+
+
+int ares_get_servers(ares_channel channel,
+ struct ares_addr_node **servers)
+{
+ struct ares_addr_node *srvr_head = NULL;
+ struct ares_addr_node *srvr_last = NULL;
+ struct ares_addr_node *srvr_curr;
+ int status = ARES_SUCCESS;
+ int i;
+
+ if (!channel)
+ return ARES_ENODATA;
+
+ for (i = 0; i < channel->nservers; i++)
+ {
+ /* Allocate storage for this server node appending it to the list */
+ srvr_curr = ares_malloc_data(ARES_DATATYPE_ADDR_NODE);
+ if (!srvr_curr)
+ {
+ status = ARES_ENOMEM;
+ break;
+ }
+ if (srvr_last)
+ {
+ srvr_last->next = srvr_curr;
+ }
+ else
+ {
+ srvr_head = srvr_curr;
+ }
+ srvr_last = srvr_curr;
+
+ /* Fill this server node data */
+ srvr_curr->family = channel->servers[i].addr.family;
+ if (srvr_curr->family == AF_INET)
+ memcpy(&srvr_curr->addrV4, &channel->servers[i].addr.addrV4,
+ sizeof(srvr_curr->addrV4));
+ else
+ memcpy(&srvr_curr->addrV6, &channel->servers[i].addr.addrV6,
+ sizeof(srvr_curr->addrV6));
+ }
+
+ if (status != ARES_SUCCESS)
+ {
+ if (srvr_head)
+ {
+ ares_free_data(srvr_head);
+ srvr_head = NULL;
+ }
+ }
+
+ *servers = srvr_head;
+
+ return status;
+}
+
+
+int ares_set_servers(ares_channel channel,
+ struct ares_addr_node *servers)
+{
+ struct ares_addr_node *srvr;
+ int num_srvrs = 0;
+ int i;
+
+ if (ares_library_initialized() != ARES_SUCCESS)
+ return ARES_ENOTINITIALIZED;
+
+ if (!channel)
+ return ARES_ENODATA;
+
+ ares__destroy_servers_state(channel);
+
+ for (srvr = servers; srvr; srvr = srvr->next)
+ {
+ num_srvrs++;
+ }
+
+ if (num_srvrs > 0)
+ {
+ /* Allocate storage for servers state */
+ channel->servers = malloc(num_srvrs * sizeof(struct server_state));
+ if (!channel->servers)
+ {
+ return ARES_ENOMEM;
+ }
+ channel->nservers = num_srvrs;
+ /* Fill servers state address data */
+ for (i = 0, srvr = servers; srvr; i++, srvr = srvr->next)
+ {
+ channel->servers[i].addr.family = srvr->family;
+ if (srvr->family == AF_INET)
+ memcpy(&channel->servers[i].addr.addrV4, &srvr->addrV4,
+ sizeof(srvr->addrV4));
+ else
+ memcpy(&channel->servers[i].addr.addrV6, &srvr->addrV6,
+ sizeof(srvr->addrV6));
+ }
+ /* Initialize servers state remaining data */
+ ares__init_servers_state(channel);
+ }
+
+ return ARES_SUCCESS;
+}
+
+/* Incomming string format: host[:port][,host[:port]]... */
+int ares_set_servers_csv(ares_channel channel,
+ const char* _csv)
+{
+ int i;
+ char* csv = NULL;
+ char* ptr;
+ char* start_host;
+ long port;
+ bool found_port;
+ int rv = ARES_SUCCESS;
+ struct ares_addr_node *servers = NULL;
+ struct ares_addr_node *last = NULL;
+
+ if (ares_library_initialized() != ARES_SUCCESS)
+ return ARES_ENOTINITIALIZED;
+
+ if (!channel)
+ return ARES_ENODATA;
+
+ ares__destroy_servers_state(channel);
+
+ i = strlen(_csv);
+ if (i == 0)
+ return ARES_SUCCESS; /* blank all servers */
+
+ csv = malloc(i + 2);
+ strcpy(csv, _csv);
+ if (csv[i-1] != ',') { /* make parsing easier by ensuring ending ',' */
+ csv[i] = ',';
+ csv[i+1] = 0;
+ }
+
+ start_host = csv;
+ found_port = false;
+ for (ptr = csv; *ptr; ptr++) {
+ if (*ptr == ',') {
+ char* pp = ptr - 1;
+ struct in_addr in4;
+ struct ares_in6_addr in6;
+ struct ares_addr_node *s = NULL;
+
+ *ptr = 0; /* null terminate host:port string */
+ /* Got an entry..see if port was specified. */
+ while (pp > start_host) {
+ if (*pp == ':')
+ break; /* yes */
+ if (!ISDIGIT(*pp)) {
+ /* Found end of digits before we found :, so wasn't a port */
+ pp = ptr;
+ break;
+ }
+ pp--;
+ }
+ if ((pp != start_host) && ((pp + 1) < ptr)) {
+ /* Found it. */
+ found_port = true;
+ port = strtol(pp + 1, NULL, 10);
+ *pp = 0; /* null terminate host */
+ }
+ /* resolve host, try ipv4 first, rslt is in network byte order */
+ rv = ares_inet_pton(AF_INET, start_host, &in4);
+ if (!rv) {
+ /* Ok, try IPv6 then */
+ rv = ares_inet_pton(AF_INET6, start_host, &in6);
+ if (!rv) {
+ rv = ARES_EBADSTR;
+ goto out;
+ }
+ /* was ipv6, add new server */
+ s = malloc(sizeof(*s));
+ if (!s) {
+ rv = ARES_ENOMEM;
+ goto out;
+ }
+ s->family = AF_INET6;
+ memcpy(&s->addr, &in6, sizeof(struct ares_in6_addr));
+ }
+ else {
+ /* was ipv4, add new server */
+ s = malloc(sizeof(*s));
+ if (!s) {
+ rv = ARES_ENOMEM;
+ goto out;
+ }
+ s->family = AF_INET;
+ memcpy(&s->addr, &in4, sizeof(struct in_addr));
+ }
+ if (s) {
+ /* TODO: Add port to ares_addr_node and assign it here. */
+
+ s->next = NULL;
+ if (last) {
+ last->next = s;
+ }
+ else {
+ servers = s;
+ last = s;
+ }
+ }
+
+ /* Set up for next one */
+ found_port = false;
+ start_host = ptr + 1;
+ }
+ }
+
+ rv = ares_set_servers(channel, servers);
+
+ out:
+ if (csv)
+ free(csv);
+ while (servers) {
+ struct ares_addr_node *s = servers;
+ servers = servers->next;
+ free(s);
+ }
+
+ return rv;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#include "ares.h"
+#include "ares_dns.h"
+#include "ares_private.h"
+
+int ares_parse_a_reply(const unsigned char *abuf, int alen,
+ struct hostent **host,
+ struct ares_addrttl *addrttls, int *naddrttls)
+{
+ unsigned int qdcount, ancount;
+ int status, i, rr_type, rr_class, rr_len, rr_ttl, naddrs;
+ int cname_ttl = INT_MAX; /* the TTL imposed by the CNAME chain */
+ int naliases;
+ long len;
+ const unsigned char *aptr;
+ char *hostname, *rr_name, *rr_data, **aliases;
+ struct in_addr *addrs;
+ struct hostent *hostent;
+ const int max_addr_ttls = (addrttls && naddrttls) ? *naddrttls : 0;
+
+ /* Set *host to NULL for all failure cases. */
+ if (host)
+ *host = NULL;
+ /* Same with *naddrttls. */
+ if (naddrttls)
+ *naddrttls = 0;
+
+ /* Give up if abuf doesn't have room for a header. */
+ if (alen < HFIXEDSZ)
+ return ARES_EBADRESP;
+
+ /* Fetch the question and answer count from the header. */
+ qdcount = DNS_HEADER_QDCOUNT(abuf);
+ ancount = DNS_HEADER_ANCOUNT(abuf);
+ if (qdcount != 1)
+ return ARES_EBADRESP;
+
+ /* Expand the name from the question, and skip past the question. */
+ aptr = abuf + HFIXEDSZ;
+ status = ares__expand_name_for_response(aptr, abuf, alen, &hostname, &len);
+ if (status != ARES_SUCCESS)
+ return status;
+ if (aptr + len + QFIXEDSZ > abuf + alen)
+ {
+ free(hostname);
+ return ARES_EBADRESP;
+ }
+ aptr += len + QFIXEDSZ;
+
+ if (host)
+ {
+ /* Allocate addresses and aliases; ancount gives an upper bound for
+ both. */
+ addrs = malloc(ancount * sizeof(struct in_addr));
+ if (!addrs)
+ {
+ free(hostname);
+ return ARES_ENOMEM;
+ }
+ aliases = malloc((ancount + 1) * sizeof(char *));
+ if (!aliases)
+ {
+ free(hostname);
+ free(addrs);
+ return ARES_ENOMEM;
+ }
+ }
+ else
+ {
+ addrs = NULL;
+ aliases = NULL;
+ }
+
+ naddrs = 0;
+ naliases = 0;
+
+ /* Examine each answer resource record (RR) in turn. */
+ for (i = 0; i < (int)ancount; i++)
+ {
+ /* Decode the RR up to the data field. */
+ status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len);
+ if (status != ARES_SUCCESS)
+ break;
+ aptr += len;
+ if (aptr + RRFIXEDSZ > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ rr_type = DNS_RR_TYPE(aptr);
+ rr_class = DNS_RR_CLASS(aptr);
+ rr_len = DNS_RR_LEN(aptr);
+ rr_ttl = DNS_RR_TTL(aptr);
+ aptr += RRFIXEDSZ;
+
+ if (rr_class == C_IN && rr_type == T_A
+ && rr_len == sizeof(struct in_addr)
+ && strcasecmp(rr_name, hostname) == 0)
+ {
+ if (addrs)
+ {
+ if (aptr + sizeof(struct in_addr) > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ memcpy(&addrs[naddrs], aptr, sizeof(struct in_addr));
+ }
+ if (naddrs < max_addr_ttls)
+ {
+ struct ares_addrttl * const at = &addrttls[naddrs];
+ if (aptr + sizeof(struct in_addr) > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ memcpy(&at->ipaddr, aptr, sizeof(struct in_addr));
+ at->ttl = rr_ttl;
+ }
+ naddrs++;
+ status = ARES_SUCCESS;
+ }
+
+ if (rr_class == C_IN && rr_type == T_CNAME)
+ {
+ /* Record the RR name as an alias. */
+ if (aliases)
+ aliases[naliases] = rr_name;
+ else
+ free(rr_name);
+ naliases++;
+
+ /* Decode the RR data and replace the hostname with it. */
+ status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data,
+ &len);
+ if (status != ARES_SUCCESS)
+ break;
+ free(hostname);
+ hostname = rr_data;
+
+ /* Take the min of the TTLs we see in the CNAME chain. */
+ if (cname_ttl > rr_ttl)
+ cname_ttl = rr_ttl;
+ }
+ else
+ free(rr_name);
+
+ aptr += rr_len;
+ if (aptr > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ }
+
+ if (status == ARES_SUCCESS && naddrs == 0 && naliases == 0)
+ /* the check for naliases to be zero is to make sure CNAME responses
+ don't get caught here */
+ status = ARES_ENODATA;
+ if (status == ARES_SUCCESS)
+ {
+ /* We got our answer. */
+ if (naddrttls)
+ {
+ const int n = naddrs < max_addr_ttls ? naddrs : max_addr_ttls;
+ for (i = 0; i < n; i++)
+ {
+ /* Ensure that each A TTL is no larger than the CNAME TTL. */
+ if (addrttls[i].ttl > cname_ttl)
+ addrttls[i].ttl = cname_ttl;
+ }
+ *naddrttls = n;
+ }
+ if (aliases)
+ aliases[naliases] = NULL;
+ if (host)
+ {
+ /* Allocate memory to build the host entry. */
+ hostent = malloc(sizeof(struct hostent));
+ if (hostent)
+ {
+ hostent->h_addr_list = malloc((naddrs + 1) * sizeof(char *));
+ if (hostent->h_addr_list)
+ {
+ /* Fill in the hostent and return successfully. */
+ hostent->h_name = hostname;
+ hostent->h_aliases = aliases;
+ hostent->h_addrtype = AF_INET;
+ hostent->h_length = sizeof(struct in_addr);
+ for (i = 0; i < naddrs; i++)
+ hostent->h_addr_list[i] = (char *) &addrs[i];
+ hostent->h_addr_list[naddrs] = NULL;
+ *host = hostent;
+ return ARES_SUCCESS;
+ }
+ free(hostent);
+ }
+ status = ARES_ENOMEM;
+ }
+ }
+ if (aliases)
+ {
+ for (i = 0; i < naliases; i++)
+ free(aliases[i]);
+ free(aliases);
+ }
+ free(addrs);
+ free(hostname);
+ return status;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright 2005 Dominick Meglio
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#include "ares.h"
+#include "ares_dns.h"
+#include "inet_net_pton.h"
+#include "ares_private.h"
+
+int ares_parse_aaaa_reply(const unsigned char *abuf, int alen,
+ struct hostent **host, struct ares_addr6ttl *addrttls,
+ int *naddrttls)
+{
+ unsigned int qdcount, ancount;
+ int status, i, rr_type, rr_class, rr_len, rr_ttl, naddrs;
+ int cname_ttl = INT_MAX; /* the TTL imposed by the CNAME chain */
+ int naliases;
+ long len;
+ const unsigned char *aptr;
+ char *hostname, *rr_name, *rr_data, **aliases;
+ struct ares_in6_addr *addrs;
+ struct hostent *hostent;
+ const int max_addr_ttls = (addrttls && naddrttls) ? *naddrttls : 0;
+
+ /* Set *host to NULL for all failure cases. */
+ if (host)
+ *host = NULL;
+ /* Same with *naddrttls. */
+ if (naddrttls)
+ *naddrttls = 0;
+
+ /* Give up if abuf doesn't have room for a header. */
+ if (alen < HFIXEDSZ)
+ return ARES_EBADRESP;
+
+ /* Fetch the question and answer count from the header. */
+ qdcount = DNS_HEADER_QDCOUNT(abuf);
+ ancount = DNS_HEADER_ANCOUNT(abuf);
+ if (qdcount != 1)
+ return ARES_EBADRESP;
+
+ /* Expand the name from the question, and skip past the question. */
+ aptr = abuf + HFIXEDSZ;
+ status = ares__expand_name_for_response(aptr, abuf, alen, &hostname, &len);
+ if (status != ARES_SUCCESS)
+ return status;
+ if (aptr + len + QFIXEDSZ > abuf + alen)
+ {
+ free(hostname);
+ return ARES_EBADRESP;
+ }
+ aptr += len + QFIXEDSZ;
+
+ /* Allocate addresses and aliases; ancount gives an upper bound for both. */
+ if (host)
+ {
+ addrs = malloc(ancount * sizeof(struct ares_in6_addr));
+ if (!addrs)
+ {
+ free(hostname);
+ return ARES_ENOMEM;
+ }
+ aliases = malloc((ancount + 1) * sizeof(char *));
+ if (!aliases)
+ {
+ free(hostname);
+ free(addrs);
+ return ARES_ENOMEM;
+ }
+ }
+ else
+ {
+ addrs = NULL;
+ aliases = NULL;
+ }
+ naddrs = 0;
+ naliases = 0;
+
+ /* Examine each answer resource record (RR) in turn. */
+ for (i = 0; i < (int)ancount; i++)
+ {
+ /* Decode the RR up to the data field. */
+ status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len);
+ if (status != ARES_SUCCESS)
+ break;
+ aptr += len;
+ if (aptr + RRFIXEDSZ > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ rr_type = DNS_RR_TYPE(aptr);
+ rr_class = DNS_RR_CLASS(aptr);
+ rr_len = DNS_RR_LEN(aptr);
+ rr_ttl = DNS_RR_TTL(aptr);
+ aptr += RRFIXEDSZ;
+
+ if (rr_class == C_IN && rr_type == T_AAAA
+ && rr_len == sizeof(struct ares_in6_addr)
+ && strcasecmp(rr_name, hostname) == 0)
+ {
+ if (addrs)
+ {
+ if (aptr + sizeof(struct ares_in6_addr) > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ memcpy(&addrs[naddrs], aptr, sizeof(struct ares_in6_addr));
+ }
+ if (naddrs < max_addr_ttls)
+ {
+ struct ares_addr6ttl * const at = &addrttls[naddrs];
+ if (aptr + sizeof(struct ares_in6_addr) > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ memcpy(&at->ip6addr, aptr, sizeof(struct ares_in6_addr));
+ at->ttl = rr_ttl;
+ }
+ naddrs++;
+ status = ARES_SUCCESS;
+ }
+
+ if (rr_class == C_IN && rr_type == T_CNAME)
+ {
+ /* Record the RR name as an alias. */
+ if (aliases)
+ aliases[naliases] = rr_name;
+ else
+ free(rr_name);
+ naliases++;
+
+ /* Decode the RR data and replace the hostname with it. */
+ status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data,
+ &len);
+ if (status != ARES_SUCCESS)
+ break;
+ free(hostname);
+ hostname = rr_data;
+
+ /* Take the min of the TTLs we see in the CNAME chain. */
+ if (cname_ttl > rr_ttl)
+ cname_ttl = rr_ttl;
+ }
+ else
+ free(rr_name);
+
+ aptr += rr_len;
+ if (aptr > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ }
+
+ if (status == ARES_SUCCESS && naddrs == 0)
+ status = ARES_ENODATA;
+ if (status == ARES_SUCCESS)
+ {
+ /* We got our answer. */
+ if (naddrttls)
+ {
+ const int n = naddrs < max_addr_ttls ? naddrs : max_addr_ttls;
+ for (i = 0; i < n; i++)
+ {
+ /* Ensure that each A TTL is no larger than the CNAME TTL. */
+ if (addrttls[i].ttl > cname_ttl)
+ addrttls[i].ttl = cname_ttl;
+ }
+ *naddrttls = n;
+ }
+ if (aliases)
+ aliases[naliases] = NULL;
+ if (host)
+ {
+ /* Allocate memory to build the host entry. */
+ hostent = malloc(sizeof(struct hostent));
+ if (hostent)
+ {
+ hostent->h_addr_list = malloc((naddrs + 1) * sizeof(char *));
+ if (hostent->h_addr_list)
+ {
+ /* Fill in the hostent and return successfully. */
+ hostent->h_name = hostname;
+ hostent->h_aliases = aliases;
+ hostent->h_addrtype = AF_INET6;
+ hostent->h_length = sizeof(struct ares_in6_addr);
+ for (i = 0; i < naddrs; i++)
+ hostent->h_addr_list[i] = (char *) &addrs[i];
+ hostent->h_addr_list[naddrs] = NULL;
+ *host = hostent;
+ return ARES_SUCCESS;
+ }
+ free(hostent);
+ }
+ status = ARES_ENOMEM;
+ }
+ }
+ if (aliases)
+ {
+ for (i = 0; i < naliases; i++)
+ free(aliases[i]);
+ free(aliases);
+ }
+ free(addrs);
+ free(hostname);
+ return status;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2010 Jeremy Lal <kapouer@melix.org>
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include "ares.h"
+#include "ares_dns.h"
+#include "ares_data.h"
+#include "ares_private.h"
+
+int
+ares_parse_mx_reply (const unsigned char *abuf, int alen,
+ struct ares_mx_reply **mx_out)
+{
+ unsigned int qdcount, ancount, i;
+ const unsigned char *aptr, *vptr;
+ int status, rr_type, rr_class, rr_len;
+ long len;
+ char *hostname = NULL, *rr_name = NULL;
+ struct ares_mx_reply *mx_head = NULL;
+ struct ares_mx_reply *mx_last = NULL;
+ struct ares_mx_reply *mx_curr;
+
+ /* Set *mx_out to NULL for all failure cases. */
+ *mx_out = NULL;
+
+ /* Give up if abuf doesn't have room for a header. */
+ if (alen < HFIXEDSZ)
+ return ARES_EBADRESP;
+
+ /* Fetch the question and answer count from the header. */
+ qdcount = DNS_HEADER_QDCOUNT (abuf);
+ ancount = DNS_HEADER_ANCOUNT (abuf);
+ if (qdcount != 1)
+ return ARES_EBADRESP;
+ if (ancount == 0)
+ return ARES_ENODATA;
+
+ /* Expand the name from the question, and skip past the question. */
+ aptr = abuf + HFIXEDSZ;
+ status = ares_expand_name (aptr, abuf, alen, &hostname, &len);
+ if (status != ARES_SUCCESS)
+ return status;
+
+ if (aptr + len + QFIXEDSZ > abuf + alen)
+ {
+ free (hostname);
+ return ARES_EBADRESP;
+ }
+ aptr += len + QFIXEDSZ;
+
+ /* Examine each answer resource record (RR) in turn. */
+ for (i = 0; i < ancount; i++)
+ {
+ /* Decode the RR up to the data field. */
+ status = ares_expand_name (aptr, abuf, alen, &rr_name, &len);
+ if (status != ARES_SUCCESS)
+ {
+ break;
+ }
+ aptr += len;
+ if (aptr + RRFIXEDSZ > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ rr_type = DNS_RR_TYPE (aptr);
+ rr_class = DNS_RR_CLASS (aptr);
+ rr_len = DNS_RR_LEN (aptr);
+ aptr += RRFIXEDSZ;
+
+ /* Check if we are really looking at a MX record */
+ if (rr_class == C_IN && rr_type == T_MX)
+ {
+ /* parse the MX record itself */
+ if (rr_len < 2)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+
+ /* Allocate storage for this MX answer appending it to the list */
+ mx_curr = ares_malloc_data(ARES_DATATYPE_MX_REPLY);
+ if (!mx_curr)
+ {
+ status = ARES_ENOMEM;
+ break;
+ }
+ if (mx_last)
+ {
+ mx_last->next = mx_curr;
+ }
+ else
+ {
+ mx_head = mx_curr;
+ }
+ mx_last = mx_curr;
+
+ vptr = aptr;
+ mx_curr->priority = ntohs (*((unsigned short *)vptr));
+ vptr += sizeof(unsigned short);
+
+ status = ares_expand_name (vptr, abuf, alen, &mx_curr->host, &len);
+ if (status != ARES_SUCCESS)
+ break;
+ }
+
+ /* Don't lose memory in the next iteration */
+ free (rr_name);
+ rr_name = NULL;
+
+ /* Move on to the next record */
+ aptr += rr_len;
+ }
+
+ if (hostname)
+ free (hostname);
+ if (rr_name)
+ free (rr_name);
+
+ /* clean up on error */
+ if (status != ARES_SUCCESS)
+ {
+ if (mx_head)
+ ares_free_data (mx_head);
+ return status;
+ }
+
+ /* everything looks fine, return the data */
+ *mx_out = mx_head;
+
+ return ARES_SUCCESS;
+}
--- /dev/null
+/* $Id */
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+/*
+ * ares_parse_ns_reply created by Vlad Dinulescu <vlad.dinulescu@avira.com>
+ * on behalf of AVIRA Gmbh - http://www.avira.com
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include "ares.h"
+#include "ares_dns.h"
+#include "ares_private.h"
+
+int ares_parse_ns_reply( const unsigned char* abuf, int alen,
+ struct hostent** host )
+{
+ unsigned int qdcount, ancount;
+ int status, i, rr_type, rr_class, rr_len;
+ int nameservers_num;
+ long len;
+ const unsigned char *aptr;
+ char* hostname, *rr_name, *rr_data, **nameservers;
+ struct hostent *hostent;
+
+ /* Set *host to NULL for all failure cases. */
+ *host = NULL;
+
+ /* Give up if abuf doesn't have room for a header. */
+ if ( alen < HFIXEDSZ )
+ return ARES_EBADRESP;
+
+ /* Fetch the question and answer count from the header. */
+ qdcount = DNS_HEADER_QDCOUNT( abuf );
+ ancount = DNS_HEADER_ANCOUNT( abuf );
+ if ( qdcount != 1 )
+ return ARES_EBADRESP;
+
+ /* Expand the name from the question, and skip past the question. */
+ aptr = abuf + HFIXEDSZ;
+ status = ares__expand_name_for_response( aptr, abuf, alen, &hostname, &len);
+ if ( status != ARES_SUCCESS )
+ return status;
+ if ( aptr + len + QFIXEDSZ > abuf + alen )
+ {
+ free( hostname );
+ return ARES_EBADRESP;
+ }
+ aptr += len + QFIXEDSZ;
+
+ /* Allocate nameservers array; ancount gives an upper bound */
+ nameservers = malloc( ( ancount + 1 ) * sizeof( char * ) );
+ if ( !nameservers )
+ {
+ free( hostname );
+ return ARES_ENOMEM;
+ }
+ nameservers_num = 0;
+
+ /* Examine each answer resource record (RR) in turn. */
+ for ( i = 0; i < ( int ) ancount; i++ )
+ {
+ /* Decode the RR up to the data field. */
+ status = ares__expand_name_for_response( aptr, abuf, alen, &rr_name, &len );
+ if ( status != ARES_SUCCESS )
+ break;
+ aptr += len;
+ if ( aptr + RRFIXEDSZ > abuf + alen )
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ rr_type = DNS_RR_TYPE( aptr );
+ rr_class = DNS_RR_CLASS( aptr );
+ rr_len = DNS_RR_LEN( aptr );
+ aptr += RRFIXEDSZ;
+
+ if ( rr_class == C_IN && rr_type == T_NS )
+ {
+ /* Decode the RR data and add it to the nameservers list */
+ status = ares__expand_name_for_response( aptr, abuf, alen, &rr_data,
+ &len);
+ if ( status != ARES_SUCCESS )
+ {
+ break;
+ }
+
+ nameservers[nameservers_num] = malloc(strlen(rr_data)+1);
+
+ if (nameservers[nameservers_num]==NULL)
+ {
+ free(rr_name);
+ free(rr_data);
+ status=ARES_ENOMEM;
+ break;
+ }
+ strcpy(nameservers[nameservers_num],rr_data);
+ free(rr_data);
+
+ nameservers_num++;
+ }
+
+ free( rr_name );
+
+ aptr += rr_len;
+ if ( aptr > abuf + alen )
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ }
+
+ if ( status == ARES_SUCCESS && nameservers_num == 0 )
+ {
+ status = ARES_ENODATA;
+ }
+ if ( status == ARES_SUCCESS )
+ {
+ /* We got our answer. Allocate memory to build the host entry. */
+ nameservers[nameservers_num] = NULL;
+ hostent = malloc( sizeof( struct hostent ) );
+ if ( hostent )
+ {
+ hostent->h_addr_list = malloc( 1 * sizeof( char * ) );
+ if ( hostent->h_addr_list )
+ {
+ /* Fill in the hostent and return successfully. */
+ hostent->h_name = hostname;
+ hostent->h_aliases = nameservers;
+ hostent->h_addrtype = AF_INET;
+ hostent->h_length = sizeof( struct in_addr );
+ hostent->h_addr_list[0] = NULL;
+ *host = hostent;
+ return ARES_SUCCESS;
+ }
+ free( hostent );
+ }
+ status = ARES_ENOMEM;
+ }
+ for ( i = 0; i < nameservers_num; i++ )
+ free( nameservers[i] );
+ free( nameservers );
+ free( hostname );
+ return status;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include "ares.h"
+#include "ares_dns.h"
+#include "ares_private.h"
+
+int ares_parse_ptr_reply(const unsigned char *abuf, int alen, const void *addr,
+ int addrlen, int family, struct hostent **host)
+{
+ unsigned int qdcount, ancount;
+ int status, i, rr_type, rr_class, rr_len;
+ long len;
+ const unsigned char *aptr;
+ char *ptrname, *hostname, *rr_name, *rr_data;
+ struct hostent *hostent;
+ int aliascnt = 0;
+ int alias_alloc = 8;
+ char ** aliases;
+
+ /* Set *host to NULL for all failure cases. */
+ *host = NULL;
+
+ /* Give up if abuf doesn't have room for a header. */
+ if (alen < HFIXEDSZ)
+ return ARES_EBADRESP;
+
+ /* Fetch the question and answer count from the header. */
+ qdcount = DNS_HEADER_QDCOUNT(abuf);
+ ancount = DNS_HEADER_ANCOUNT(abuf);
+ if (qdcount != 1)
+ return ARES_EBADRESP;
+
+ /* Expand the name from the question, and skip past the question. */
+ aptr = abuf + HFIXEDSZ;
+ status = ares__expand_name_for_response(aptr, abuf, alen, &ptrname, &len);
+ if (status != ARES_SUCCESS)
+ return status;
+ if (aptr + len + QFIXEDSZ > abuf + alen)
+ {
+ free(ptrname);
+ return ARES_EBADRESP;
+ }
+ aptr += len + QFIXEDSZ;
+
+ /* Examine each answer resource record (RR) in turn. */
+ hostname = NULL;
+ aliases = malloc(alias_alloc * sizeof(char *));
+ if (!aliases)
+ {
+ free(ptrname);
+ return ARES_ENOMEM;
+ }
+ for (i = 0; i < (int)ancount; i++)
+ {
+ /* Decode the RR up to the data field. */
+ status = ares__expand_name_for_response(aptr, abuf, alen, &rr_name, &len);
+ if (status != ARES_SUCCESS)
+ break;
+ aptr += len;
+ if (aptr + RRFIXEDSZ > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ rr_type = DNS_RR_TYPE(aptr);
+ rr_class = DNS_RR_CLASS(aptr);
+ rr_len = DNS_RR_LEN(aptr);
+ aptr += RRFIXEDSZ;
+
+ if (rr_class == C_IN && rr_type == T_PTR
+ && strcasecmp(rr_name, ptrname) == 0)
+ {
+ /* Decode the RR data and set hostname to it. */
+ status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data,
+ &len);
+ if (status != ARES_SUCCESS)
+ break;
+ if (hostname)
+ free(hostname);
+ hostname = rr_data;
+ aliases[aliascnt] = malloc((strlen(rr_data)+1) * sizeof(char *));
+ if (!aliases[aliascnt])
+ {
+ status = ARES_ENOMEM;
+ break;
+ }
+ strncpy(aliases[aliascnt], rr_data, strlen(rr_data)+1);
+ aliascnt++;
+ if (aliascnt >= alias_alloc) {
+ char **ptr;
+ alias_alloc *= 2;
+ ptr = realloc(aliases, alias_alloc * sizeof(char *));
+ if(!ptr) {
+ status = ARES_ENOMEM;
+ break;
+ }
+ aliases = ptr;
+ }
+ }
+
+ if (rr_class == C_IN && rr_type == T_CNAME)
+ {
+ /* Decode the RR data and replace ptrname with it. */
+ status = ares__expand_name_for_response(aptr, abuf, alen, &rr_data,
+ &len);
+ if (status != ARES_SUCCESS)
+ break;
+ free(ptrname);
+ ptrname = rr_data;
+ }
+
+ free(rr_name);
+ aptr += rr_len;
+ if (aptr > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ }
+
+ if (status == ARES_SUCCESS && !hostname)
+ status = ARES_ENODATA;
+ if (status == ARES_SUCCESS)
+ {
+ /* We got our answer. Allocate memory to build the host entry. */
+ hostent = malloc(sizeof(struct hostent));
+ if (hostent)
+ {
+ hostent->h_addr_list = malloc(2 * sizeof(char *));
+ if (hostent->h_addr_list)
+ {
+ hostent->h_addr_list[0] = malloc(addrlen);
+ if (hostent->h_addr_list[0])
+ {
+ hostent->h_aliases = malloc((aliascnt+1) * sizeof (char *));
+ if (hostent->h_aliases)
+ {
+ /* Fill in the hostent and return successfully. */
+ hostent->h_name = hostname;
+ for (i=0 ; i<aliascnt ; i++)
+ hostent->h_aliases[i] = aliases[i];
+ hostent->h_aliases[aliascnt] = NULL;
+ hostent->h_addrtype = family;
+ hostent->h_length = addrlen;
+ memcpy(hostent->h_addr_list[0], addr, addrlen);
+ hostent->h_addr_list[1] = NULL;
+ *host = hostent;
+ free(aliases);
+ free(ptrname);
+ return ARES_SUCCESS;
+ }
+ free(hostent->h_addr_list[0]);
+ }
+ free(hostent->h_addr_list);
+ }
+ free(hostent);
+ }
+ status = ARES_ENOMEM;
+ }
+ for (i=0 ; i<aliascnt ; i++)
+ if (aliases[i])
+ free(aliases[i]);
+ free(aliases);
+ if (hostname)
+ free(hostname);
+ free(ptrname);
+ return status;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2009 by Jakub Hrozek <jhrozek@redhat.com>
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include "ares.h"
+#include "ares_dns.h"
+#include "ares_data.h"
+#include "ares_private.h"
+
+/* AIX portability check */
+#ifndef T_SRV
+# define T_SRV 33 /* server selection */
+#endif
+
+int
+ares_parse_srv_reply (const unsigned char *abuf, int alen,
+ struct ares_srv_reply **srv_out)
+{
+ unsigned int qdcount, ancount, i;
+ const unsigned char *aptr, *vptr;
+ int status, rr_type, rr_class, rr_len;
+ long len;
+ char *hostname = NULL, *rr_name = NULL;
+ struct ares_srv_reply *srv_head = NULL;
+ struct ares_srv_reply *srv_last = NULL;
+ struct ares_srv_reply *srv_curr;
+
+ /* Set *srv_out to NULL for all failure cases. */
+ *srv_out = NULL;
+
+ /* Give up if abuf doesn't have room for a header. */
+ if (alen < HFIXEDSZ)
+ return ARES_EBADRESP;
+
+ /* Fetch the question and answer count from the header. */
+ qdcount = DNS_HEADER_QDCOUNT (abuf);
+ ancount = DNS_HEADER_ANCOUNT (abuf);
+ if (qdcount != 1)
+ return ARES_EBADRESP;
+ if (ancount == 0)
+ return ARES_ENODATA;
+
+ /* Expand the name from the question, and skip past the question. */
+ aptr = abuf + HFIXEDSZ;
+ status = ares_expand_name (aptr, abuf, alen, &hostname, &len);
+ if (status != ARES_SUCCESS)
+ return status;
+
+ if (aptr + len + QFIXEDSZ > abuf + alen)
+ {
+ free (hostname);
+ return ARES_EBADRESP;
+ }
+ aptr += len + QFIXEDSZ;
+
+ /* Examine each answer resource record (RR) in turn. */
+ for (i = 0; i < ancount; i++)
+ {
+ /* Decode the RR up to the data field. */
+ status = ares_expand_name (aptr, abuf, alen, &rr_name, &len);
+ if (status != ARES_SUCCESS)
+ {
+ break;
+ }
+ aptr += len;
+ if (aptr + RRFIXEDSZ > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ rr_type = DNS_RR_TYPE (aptr);
+ rr_class = DNS_RR_CLASS (aptr);
+ rr_len = DNS_RR_LEN (aptr);
+ aptr += RRFIXEDSZ;
+
+ /* Check if we are really looking at a SRV record */
+ if (rr_class == C_IN && rr_type == T_SRV)
+ {
+ /* parse the SRV record itself */
+ if (rr_len < 6)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+
+ /* Allocate storage for this SRV answer appending it to the list */
+ srv_curr = ares_malloc_data(ARES_DATATYPE_SRV_REPLY);
+ if (!srv_curr)
+ {
+ status = ARES_ENOMEM;
+ break;
+ }
+ if (srv_last)
+ {
+ srv_last->next = srv_curr;
+ }
+ else
+ {
+ srv_head = srv_curr;
+ }
+ srv_last = srv_curr;
+
+ vptr = aptr;
+ srv_curr->priority = ntohs (*((unsigned short *)vptr));
+ vptr += sizeof(unsigned short);
+ srv_curr->weight = ntohs (*((unsigned short *)vptr));
+ vptr += sizeof(unsigned short);
+ srv_curr->port = ntohs (*((unsigned short *)vptr));
+ vptr += sizeof(unsigned short);
+
+ status = ares_expand_name (vptr, abuf, alen, &srv_curr->host, &len);
+ if (status != ARES_SUCCESS)
+ break;
+ }
+
+ /* Don't lose memory in the next iteration */
+ free (rr_name);
+ rr_name = NULL;
+
+ /* Move on to the next record */
+ aptr += rr_len;
+ }
+
+ if (hostname)
+ free (hostname);
+ if (rr_name)
+ free (rr_name);
+
+ /* clean up on error */
+ if (status != ARES_SUCCESS)
+ {
+ if (srv_head)
+ ares_free_data (srv_head);
+ return status;
+ }
+
+ /* everything looks fine, return the data */
+ *srv_out = srv_head;
+
+ return ARES_SUCCESS;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2009 by Jakub Hrozek <jhrozek@redhat.com>
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "ares.h"
+#include "ares_dns.h"
+#include "ares_data.h"
+#include "ares_private.h"
+
+int
+ares_parse_txt_reply (const unsigned char *abuf, int alen,
+ struct ares_txt_reply **txt_out)
+{
+ size_t substr_len, str_len;
+ unsigned int qdcount, ancount, i;
+ const unsigned char *aptr;
+ const unsigned char *strptr;
+ int status, rr_type, rr_class, rr_len;
+ long len;
+ char *hostname = NULL, *rr_name = NULL;
+ struct ares_txt_reply *txt_head = NULL;
+ struct ares_txt_reply *txt_last = NULL;
+ struct ares_txt_reply *txt_curr;
+
+ /* Set *txt_out to NULL for all failure cases. */
+ *txt_out = NULL;
+
+ /* Give up if abuf doesn't have room for a header. */
+ if (alen < HFIXEDSZ)
+ return ARES_EBADRESP;
+
+ /* Fetch the question and answer count from the header. */
+ qdcount = DNS_HEADER_QDCOUNT (abuf);
+ ancount = DNS_HEADER_ANCOUNT (abuf);
+ if (qdcount != 1)
+ return ARES_EBADRESP;
+ if (ancount == 0)
+ return ARES_ENODATA;
+
+ /* Expand the name from the question, and skip past the question. */
+ aptr = abuf + HFIXEDSZ;
+ status = ares_expand_name (aptr, abuf, alen, &hostname, &len);
+ if (status != ARES_SUCCESS)
+ return status;
+
+ if (aptr + len + QFIXEDSZ > abuf + alen)
+ {
+ free (hostname);
+ return ARES_EBADRESP;
+ }
+ aptr += len + QFIXEDSZ;
+
+ /* Examine each answer resource record (RR) in turn. */
+ for (i = 0; i < ancount; i++)
+ {
+ /* Decode the RR up to the data field. */
+ status = ares_expand_name (aptr, abuf, alen, &rr_name, &len);
+ if (status != ARES_SUCCESS)
+ {
+ break;
+ }
+ aptr += len;
+ if (aptr + RRFIXEDSZ > abuf + alen)
+ {
+ status = ARES_EBADRESP;
+ break;
+ }
+ rr_type = DNS_RR_TYPE (aptr);
+ rr_class = DNS_RR_CLASS (aptr);
+ rr_len = DNS_RR_LEN (aptr);
+ aptr += RRFIXEDSZ;
+
+ /* Check if we are really looking at a TXT record */
+ if (rr_class == C_IN && rr_type == T_TXT)
+ {
+ /* Allocate storage for this TXT answer appending it to the list */
+ txt_curr = ares_malloc_data(ARES_DATATYPE_TXT_REPLY);
+ if (!txt_curr)
+ {
+ status = ARES_ENOMEM;
+ break;
+ }
+ if (txt_last)
+ {
+ txt_last->next = txt_curr;
+ }
+ else
+ {
+ txt_head = txt_curr;
+ }
+ txt_last = txt_curr;
+
+ /*
+ * There may be multiple substrings in a single TXT record. Each
+ * substring may be up to 255 characters in length, with a
+ * "length byte" indicating the size of the substring payload.
+ * RDATA contains both the length-bytes and payloads of all
+ * substrings contained therein.
+ */
+
+ /* Compute total length to allow a single memory allocation */
+ strptr = aptr;
+ while (strptr < (aptr + rr_len))
+ {
+ substr_len = (unsigned char)*strptr;
+ txt_curr->length += substr_len;
+ strptr += substr_len + 1;
+ }
+
+ /* Including null byte */
+ txt_curr->txt = malloc (txt_curr->length + 1);
+ if (txt_curr->txt == NULL)
+ {
+ status = ARES_ENOMEM;
+ break;
+ }
+
+ /* Step through the list of substrings, concatenating them */
+ str_len = 0;
+ strptr = aptr;
+ while (strptr < (aptr + rr_len))
+ {
+ substr_len = (unsigned char)*strptr;
+ strptr++;
+ memcpy ((char *) txt_curr->txt + str_len, strptr, substr_len);
+ str_len += substr_len;
+ strptr += substr_len;
+ }
+ /* Make sure we NULL-terminate */
+ *((char *) txt_curr->txt + txt_curr->length) = '\0';
+ }
+
+ /* Don't lose memory in the next iteration */
+ free (rr_name);
+ rr_name = NULL;
+
+ /* Move on to the next record */
+ aptr += rr_len;
+ }
+
+ if (hostname)
+ free (hostname);
+ if (rr_name)
+ free (rr_name);
+
+ /* clean up on error */
+ if (status != ARES_SUCCESS)
+ {
+ if (txt_head)
+ ares_free_data (txt_head);
+ return status;
+ }
+
+ /* everything looks fine, return the data */
+ *txt_out = txt_head;
+
+ return ARES_SUCCESS;
+}
--- /dev/null
+#ifndef __ARES_PRIVATE_H
+#define __ARES_PRIVATE_H
+
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2004-2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+/*
+ * Define WIN32 when build target is Win32 API
+ */
+
+#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32)
+#define WIN32
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#ifdef WATT32
+#include <tcp.h>
+#include <sys/ioctl.h>
+#define writev(s,v,c) writev_s(s,v,c)
+#define HAVE_WRITEV 1
+#endif
+
+#ifdef NETWARE
+#include <time.h>
+#endif
+
+#define DEFAULT_TIMEOUT 5000 /* milliseconds */
+#define DEFAULT_TRIES 4
+#ifndef INADDR_NONE
+#define INADDR_NONE 0xffffffff
+#endif
+
+#if defined(WIN32) && !defined(WATT32)
+
+#define IS_NT() ((int)GetVersion() > 0)
+#define WIN_NS_9X "System\\CurrentControlSet\\Services\\VxD\\MSTCP"
+#define WIN_NS_NT_KEY "System\\CurrentControlSet\\Services\\Tcpip\\Parameters"
+#define NAMESERVER "NameServer"
+#define DHCPNAMESERVER "DhcpNameServer"
+#define DATABASEPATH "DatabasePath"
+#define WIN_PATH_HOSTS "\\hosts"
+
+#elif defined(WATT32)
+
+#define PATH_RESOLV_CONF "/dev/ENV/etc/resolv.conf"
+
+#elif defined(NETWARE)
+
+#define PATH_RESOLV_CONF "sys:/etc/resolv.cfg"
+#define PATH_HOSTS "sys:/etc/hosts"
+
+#elif defined(__riscos__)
+
+#define PATH_HOSTS "InetDBase:Hosts"
+
+#else
+
+#define PATH_RESOLV_CONF "/etc/resolv.conf"
+#ifdef ETC_INET
+#define PATH_HOSTS "/etc/inet/hosts"
+#else
+#define PATH_HOSTS "/etc/hosts"
+#endif
+
+#endif
+
+#define ARES_ID_KEY_LEN 31
+
+#include "ares_ipv6.h"
+#include "ares_llist.h"
+
+#ifndef HAVE_STRDUP
+# include "ares_strdup.h"
+# define strdup(ptr) ares_strdup(ptr)
+#endif
+
+#ifndef HAVE_STRCASECMP
+# include "ares_strcasecmp.h"
+# define strcasecmp(p1,p2) ares_strcasecmp(p1,p2)
+#endif
+
+#ifndef HAVE_STRNCASECMP
+# include "ares_strcasecmp.h"
+# define strncasecmp(p1,p2,n) ares_strncasecmp(p1,p2,n)
+#endif
+
+#ifndef HAVE_WRITEV
+# include "ares_writev.h"
+# define writev(s,ptr,cnt) ares_writev(s,ptr,cnt)
+#endif
+
+struct ares_addr {
+ int family;
+ union {
+ struct in_addr addr4;
+ struct ares_in6_addr addr6;
+ } addr;
+};
+#define addrV4 addr.addr4
+#define addrV6 addr.addr6
+
+struct query;
+
+struct send_request {
+ /* Remaining data to send */
+ const unsigned char *data;
+ size_t len;
+
+ /* The query for which we're sending this data */
+ struct query* owner_query;
+ /* The buffer we're using, if we have our own copy of the packet */
+ unsigned char *data_storage;
+
+ /* Next request in queue */
+ struct send_request *next;
+};
+
+struct server_state {
+ struct ares_addr addr;
+ ares_socket_t udp_socket;
+ ares_socket_t tcp_socket;
+
+ /* Mini-buffer for reading the length word */
+ unsigned char tcp_lenbuf[2];
+ int tcp_lenbuf_pos;
+ int tcp_length;
+
+ /* Buffer for reading actual TCP data */
+ unsigned char *tcp_buffer;
+ int tcp_buffer_pos;
+
+ /* TCP output queue */
+ struct send_request *qhead;
+ struct send_request *qtail;
+
+ /* Which incarnation of this connection is this? We don't want to
+ * retransmit requests into the very same socket, but if the server
+ * closes on us and we re-open the connection, then we do want to
+ * re-send. */
+ int tcp_connection_generation;
+
+ /* Circular, doubly-linked list of outstanding queries to this server */
+ struct list_node queries_to_server;
+
+ /* Link back to owning channel */
+ ares_channel channel;
+
+ /* Is this server broken? We mark connections as broken when a
+ * request that is queued for sending times out.
+ */
+ int is_broken;
+};
+
+/* State to represent a DNS query */
+struct query {
+ /* Query ID from qbuf, for faster lookup, and current timeout */
+ unsigned short qid;
+ struct timeval timeout;
+
+ /*
+ * Links for the doubly-linked lists in which we insert a query.
+ * These circular, doubly-linked lists that are hash-bucketed based
+ * the attributes we care about, help making most important
+ * operations O(1).
+ */
+ struct list_node queries_by_qid; /* hopefully in same cache line as qid */
+ struct list_node queries_by_timeout;
+ struct list_node queries_to_server;
+ struct list_node all_queries;
+
+ /* Query buf with length at beginning, for TCP transmission */
+ unsigned char *tcpbuf;
+ int tcplen;
+
+ /* Arguments passed to ares_send() (qbuf points into tcpbuf) */
+ const unsigned char *qbuf;
+ int qlen;
+ ares_callback callback;
+ void *arg;
+
+ /* Query status */
+ int try; /* Number of times we tried this query already. */
+ int server; /* Server this query has last been sent to. */
+ struct query_server_info *server_info; /* per-server state */
+ int using_tcp;
+ int error_status;
+ int timeouts; /* number of timeouts we saw for this request */
+};
+
+/* Per-server state for a query */
+struct query_server_info {
+ int skip_server; /* should we skip server, due to errors, etc? */
+ int tcp_connection_generation; /* into which TCP connection did we send? */
+};
+
+/* An IP address pattern; matches an IP address X if X & mask == addr */
+#define PATTERN_MASK 0x1
+#define PATTERN_CIDR 0x2
+
+struct apattern {
+ union
+ {
+ struct in_addr addr4;
+ struct ares_in6_addr addr6;
+ } addr;
+ union
+ {
+ struct in_addr addr4;
+ struct ares_in6_addr addr6;
+ unsigned short bits;
+ } mask;
+ int family;
+ unsigned short type;
+};
+
+typedef struct rc4_key
+{
+ unsigned char state[256];
+ unsigned char x;
+ unsigned char y;
+} rc4_key;
+
+struct ares_channeldata {
+ /* Configuration data */
+ int flags;
+ int timeout; /* in milliseconds */
+ int tries;
+ int ndots;
+ int rotate; /* if true, all servers specified are used */
+ int udp_port;
+ int tcp_port;
+ int socket_send_buffer_size;
+ int socket_receive_buffer_size;
+ char **domains;
+ int ndomains;
+ struct apattern *sortlist;
+ int nsort;
+ char *lookups;
+
+ /* For binding to local devices and/or IP addresses. Leave
+ * them null/zero for no binding.
+ */
+ char local_dev_name[32];
+ unsigned int local_ip4;
+ unsigned char local_ip6[16];
+
+ int optmask; /* the option bitfield passed in at init time */
+
+ /* Server addresses and communications state */
+ struct server_state *servers;
+ int nservers;
+
+ /* ID to use for next query */
+ unsigned short next_id;
+ /* key to use when generating new ids */
+ rc4_key id_key;
+
+ /* Generation number to use for the next TCP socket open/close */
+ int tcp_connection_generation;
+
+ /* The time at which we last called process_timeouts(). Uses integer seconds
+ just to draw the line somewhere. */
+ time_t last_timeout_processed;
+
+ /* Last server we sent a query to. */
+ int last_server;
+
+ /* Circular, doubly-linked list of queries, bucketed various ways.... */
+ /* All active queries in a single list: */
+ struct list_node all_queries;
+ /* Queries bucketed by qid, for quickly dispatching DNS responses: */
+#define ARES_QID_TABLE_SIZE 2048
+ struct list_node queries_by_qid[ARES_QID_TABLE_SIZE];
+ /* Queries bucketed by timeout, for quickly handling timeouts: */
+#define ARES_TIMEOUT_TABLE_SIZE 1024
+ struct list_node queries_by_timeout[ARES_TIMEOUT_TABLE_SIZE];
+
+ ares_sock_state_cb sock_state_cb;
+ void *sock_state_cb_data;
+
+ ares_sock_create_callback sock_create_cb;
+ void *sock_create_cb_data;
+};
+
+/* return true if now is exactly check time or later */
+int ares__timedout(struct timeval *now,
+ struct timeval *check);
+/* add the specific number of milliseconds to the time in the first argument */
+int ares__timeadd(struct timeval *now,
+ int millisecs);
+/* return time offset between now and (future) check, in milliseconds */
+long ares__timeoffset(struct timeval *now,
+ struct timeval *check);
+/* returns ARES_SUCCESS if library has been initialized */
+int ares_library_initialized(void);
+void ares__rc4(rc4_key* key,unsigned char *buffer_ptr, int buffer_len);
+void ares__send_query(ares_channel channel, struct query *query,
+ struct timeval *now);
+void ares__close_sockets(ares_channel channel, struct server_state *server);
+int ares__get_hostent(FILE *fp, int family, struct hostent **host);
+int ares__read_line(FILE *fp, char **buf, size_t *bufsize);
+void ares__free_query(struct query *query);
+unsigned short ares__generate_new_id(rc4_key* key);
+struct timeval ares__tvnow(void);
+int ares__expand_name_for_response(const unsigned char *encoded,
+ const unsigned char *abuf, int alen,
+ char **s, long *enclen);
+void ares__init_servers_state(ares_channel channel);
+void ares__destroy_servers_state(ares_channel channel);
+#if 0 /* Not used */
+long ares__tvdiff(struct timeval t1, struct timeval t2);
+#endif
+
+#define ARES_SWAP_BYTE(a,b) \
+ { unsigned char swapByte = *(a); *(a) = *(b); *(b) = swapByte; }
+
+#define SOCK_STATE_CALLBACK(c, s, r, w) \
+ do { \
+ if ((c)->sock_state_cb) \
+ (c)->sock_state_cb((c)->sock_state_cb_data, (s), (r), (w)); \
+ } while (0)
+
+#ifdef CURLDEBUG
+/* This is low-level hard-hacking memory leak tracking and similar. Using the
+ libcurl lowlevel code from within library is ugly and only works when
+ c-ares is built and linked with a similarly curldebug-enabled libcurl,
+ but we do this anyway for convenience. */
+#include "../lib/memdebug.h"
+#endif
+
+#endif /* __ARES_PRIVATE_H */
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ * Copyright (C) 2004-2010 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_SYS_UIO_H
+# include <sys/uio.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_NETINET_TCP_H
+# include <netinet/tcp.h>
+#endif
+#ifdef HAVE_NETDB_H
+# include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#ifdef HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+# include <sys/ioctl.h>
+#endif
+#ifdef NETWARE
+# include <sys/filio.h>
+#endif
+
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <time.h>
+#include <errno.h>
+
+#include "ares.h"
+#include "ares_dns.h"
+#include "ares_private.h"
+
+
+static int try_again(int errnum);
+static void write_tcp_data(ares_channel channel, fd_set *write_fds,
+ ares_socket_t write_fd, struct timeval *now);
+static void read_tcp_data(ares_channel channel, fd_set *read_fds,
+ ares_socket_t read_fd, struct timeval *now);
+static void read_udp_packets(ares_channel channel, fd_set *read_fds,
+ ares_socket_t read_fd, struct timeval *now);
+static void advance_tcp_send_queue(ares_channel channel, int whichserver,
+ ssize_t num_bytes);
+static void process_timeouts(ares_channel channel, struct timeval *now);
+static void process_broken_connections(ares_channel channel,
+ struct timeval *now);
+static void process_answer(ares_channel channel, unsigned char *abuf,
+ int alen, int whichserver, int tcp,
+ struct timeval *now);
+static void handle_error(ares_channel channel, int whichserver,
+ struct timeval *now);
+static void skip_server(ares_channel channel, struct query *query,
+ int whichserver);
+static void next_server(ares_channel channel, struct query *query,
+ struct timeval *now);
+static int open_tcp_socket(ares_channel channel, struct server_state *server);
+static int open_udp_socket(ares_channel channel, struct server_state *server);
+static int same_questions(const unsigned char *qbuf, int qlen,
+ const unsigned char *abuf, int alen);
+static int same_address(struct sockaddr *sa, struct ares_addr *aa);
+static void end_query(ares_channel channel, struct query *query, int status,
+ unsigned char *abuf, int alen);
+
+/* return true if now is exactly check time or later */
+int ares__timedout(struct timeval *now,
+ struct timeval *check)
+{
+ long secs = (now->tv_sec - check->tv_sec);
+
+ if(secs > 0)
+ return 1; /* yes, timed out */
+ if(secs < 0)
+ return 0; /* nope, not timed out */
+
+ /* if the full seconds were identical, check the sub second parts */
+ return (now->tv_usec - check->tv_usec >= 0);
+}
+
+/* add the specific number of milliseconds to the time in the first argument */
+int ares__timeadd(struct timeval *now,
+ int millisecs)
+{
+ now->tv_sec += millisecs/1000;
+ now->tv_usec += (millisecs%1000)*1000;
+
+ if(now->tv_usec >= 1000000) {
+ ++(now->tv_sec);
+ now->tv_usec -= 1000000;
+ }
+
+ return 0;
+}
+
+/* return time offset between now and (future) check, in milliseconds */
+long ares__timeoffset(struct timeval *now,
+ struct timeval *check)
+{
+ return (check->tv_sec - now->tv_sec)*1000 +
+ (check->tv_usec - now->tv_usec)/1000;
+}
+
+
+/*
+ * generic process function
+ */
+static void processfds(ares_channel channel,
+ fd_set *read_fds, ares_socket_t read_fd,
+ fd_set *write_fds, ares_socket_t write_fd)
+{
+ struct timeval now = ares__tvnow();
+
+ write_tcp_data(channel, write_fds, write_fd, &now);
+ read_tcp_data(channel, read_fds, read_fd, &now);
+ read_udp_packets(channel, read_fds, read_fd, &now);
+ process_timeouts(channel, &now);
+ process_broken_connections(channel, &now);
+}
+
+/* Something interesting happened on the wire, or there was a timeout.
+ * See what's up and respond accordingly.
+ */
+void ares_process(ares_channel channel, fd_set *read_fds, fd_set *write_fds)
+{
+ processfds(channel, read_fds, ARES_SOCKET_BAD, write_fds, ARES_SOCKET_BAD);
+}
+
+/* Something interesting happened on the wire, or there was a timeout.
+ * See what's up and respond accordingly.
+ */
+void ares_process_fd(ares_channel channel,
+ ares_socket_t read_fd, /* use ARES_SOCKET_BAD or valid
+ file descriptors */
+ ares_socket_t write_fd)
+{
+ processfds(channel, NULL, read_fd, NULL, write_fd);
+}
+
+
+/* Return 1 if the specified error number describes a readiness error, or 0
+ * otherwise. This is mostly for HP-UX, which could return EAGAIN or
+ * EWOULDBLOCK. See this man page
+ *
+ * http://devrsrc1.external.hp.com/STKS/cgi-bin/man2html?
+ * manpage=/usr/share/man/man2.Z/send.2
+ */
+static int try_again(int errnum)
+{
+#if !defined EWOULDBLOCK && !defined EAGAIN
+#error "Neither EWOULDBLOCK nor EAGAIN defined"
+#endif
+ switch (errnum)
+ {
+#ifdef EWOULDBLOCK
+ case EWOULDBLOCK:
+ return 1;
+#endif
+#if defined EAGAIN && EAGAIN != EWOULDBLOCK
+ case EAGAIN:
+ return 1;
+#endif
+ }
+ return 0;
+}
+
+/* If any TCP sockets select true for writing, write out queued data
+ * we have for them.
+ */
+static void write_tcp_data(ares_channel channel,
+ fd_set *write_fds,
+ ares_socket_t write_fd,
+ struct timeval *now)
+{
+ struct server_state *server;
+ struct send_request *sendreq;
+ struct iovec *vec;
+ int i;
+ ssize_t scount;
+ ssize_t wcount;
+ size_t n;
+
+ if(!write_fds && (write_fd == ARES_SOCKET_BAD))
+ /* no possible action */
+ return;
+
+ for (i = 0; i < channel->nservers; i++)
+ {
+ /* Make sure server has data to send and is selected in write_fds or
+ write_fd. */
+ server = &channel->servers[i];
+ if (!server->qhead || server->tcp_socket == ARES_SOCKET_BAD ||
+ server->is_broken)
+ continue;
+
+ if(write_fds) {
+ if(!FD_ISSET(server->tcp_socket, write_fds))
+ continue;
+ }
+ else {
+ if(server->tcp_socket != write_fd)
+ continue;
+ }
+
+ if(write_fds)
+ /* If there's an error and we close this socket, then open
+ * another with the same fd to talk to another server, then we
+ * don't want to think that it was the new socket that was
+ * ready. This is not disastrous, but is likely to result in
+ * extra system calls and confusion. */
+ FD_CLR(server->tcp_socket, write_fds);
+
+ /* Count the number of send queue items. */
+ n = 0;
+ for (sendreq = server->qhead; sendreq; sendreq = sendreq->next)
+ n++;
+
+ /* Allocate iovecs so we can send all our data at once. */
+ vec = malloc(n * sizeof(struct iovec));
+ if (vec)
+ {
+ /* Fill in the iovecs and send. */
+ n = 0;
+ for (sendreq = server->qhead; sendreq; sendreq = sendreq->next)
+ {
+ vec[n].iov_base = (char *) sendreq->data;
+ vec[n].iov_len = sendreq->len;
+ n++;
+ }
+ wcount = (ssize_t)writev(server->tcp_socket, vec, (int)n);
+ free(vec);
+ if (wcount < 0)
+ {
+ if (!try_again(SOCKERRNO))
+ handle_error(channel, i, now);
+ continue;
+ }
+
+ /* Advance the send queue by as many bytes as we sent. */
+ advance_tcp_send_queue(channel, i, wcount);
+ }
+ else
+ {
+ /* Can't allocate iovecs; just send the first request. */
+ sendreq = server->qhead;
+
+ scount = swrite(server->tcp_socket, sendreq->data, sendreq->len);
+ if (scount < 0)
+ {
+ if (!try_again(SOCKERRNO))
+ handle_error(channel, i, now);
+ continue;
+ }
+
+ /* Advance the send queue by as many bytes as we sent. */
+ advance_tcp_send_queue(channel, i, scount);
+ }
+ }
+}
+
+/* Consume the given number of bytes from the head of the TCP send queue. */
+static void advance_tcp_send_queue(ares_channel channel, int whichserver,
+ ssize_t num_bytes)
+{
+ struct send_request *sendreq;
+ struct server_state *server = &channel->servers[whichserver];
+ while (num_bytes > 0)
+ {
+ sendreq = server->qhead;
+ if ((size_t)num_bytes >= sendreq->len)
+ {
+ num_bytes -= sendreq->len;
+ server->qhead = sendreq->next;
+ if (server->qhead == NULL)
+ {
+ SOCK_STATE_CALLBACK(channel, server->tcp_socket, 1, 0);
+ server->qtail = NULL;
+ }
+ if (sendreq->data_storage != NULL)
+ free(sendreq->data_storage);
+ free(sendreq);
+ }
+ else
+ {
+ sendreq->data += num_bytes;
+ sendreq->len -= num_bytes;
+ num_bytes = 0;
+ }
+ }
+}
+
+/* If any TCP socket selects true for reading, read some data,
+ * allocate a buffer if we finish reading the length word, and process
+ * a packet if we finish reading one.
+ */
+static void read_tcp_data(ares_channel channel, fd_set *read_fds,
+ ares_socket_t read_fd, struct timeval *now)
+{
+ struct server_state *server;
+ int i;
+ ssize_t count;
+
+ if(!read_fds && (read_fd == ARES_SOCKET_BAD))
+ /* no possible action */
+ return;
+
+ for (i = 0; i < channel->nservers; i++)
+ {
+ /* Make sure the server has a socket and is selected in read_fds. */
+ server = &channel->servers[i];
+ if (server->tcp_socket == ARES_SOCKET_BAD || server->is_broken)
+ continue;
+
+ if(read_fds) {
+ if(!FD_ISSET(server->tcp_socket, read_fds))
+ continue;
+ }
+ else {
+ if(server->tcp_socket != read_fd)
+ continue;
+ }
+
+ if(read_fds)
+ /* If there's an error and we close this socket, then open
+ * another with the same fd to talk to another server, then we
+ * don't want to think that it was the new socket that was
+ * ready. This is not disastrous, but is likely to result in
+ * extra system calls and confusion. */
+ FD_CLR(server->tcp_socket, read_fds);
+
+ if (server->tcp_lenbuf_pos != 2)
+ {
+ /* We haven't yet read a length word, so read that (or
+ * what's left to read of it).
+ */
+ count = sread(server->tcp_socket,
+ server->tcp_lenbuf + server->tcp_lenbuf_pos,
+ 2 - server->tcp_lenbuf_pos);
+ if (count <= 0)
+ {
+ if (!(count == -1 && try_again(SOCKERRNO)))
+ handle_error(channel, i, now);
+ continue;
+ }
+
+ server->tcp_lenbuf_pos += (int)count;
+ if (server->tcp_lenbuf_pos == 2)
+ {
+ /* We finished reading the length word. Decode the
+ * length and allocate a buffer for the data.
+ */
+ server->tcp_length = server->tcp_lenbuf[0] << 8
+ | server->tcp_lenbuf[1];
+ server->tcp_buffer = malloc(server->tcp_length);
+ if (!server->tcp_buffer)
+ handle_error(channel, i, now);
+ server->tcp_buffer_pos = 0;
+ }
+ }
+ else
+ {
+ /* Read data into the allocated buffer. */
+ count = sread(server->tcp_socket,
+ server->tcp_buffer + server->tcp_buffer_pos,
+ server->tcp_length - server->tcp_buffer_pos);
+ if (count <= 0)
+ {
+ if (!(count == -1 && try_again(SOCKERRNO)))
+ handle_error(channel, i, now);
+ continue;
+ }
+
+ server->tcp_buffer_pos += (int)count;
+ if (server->tcp_buffer_pos == server->tcp_length)
+ {
+ /* We finished reading this answer; process it and
+ * prepare to read another length word.
+ */
+ process_answer(channel, server->tcp_buffer, server->tcp_length,
+ i, 1, now);
+ if (server->tcp_buffer)
+ free(server->tcp_buffer);
+ server->tcp_buffer = NULL;
+ server->tcp_lenbuf_pos = 0;
+ server->tcp_buffer_pos = 0;
+ }
+ }
+ }
+}
+
+/* If any UDP sockets select true for reading, process them. */
+static void read_udp_packets(ares_channel channel, fd_set *read_fds,
+ ares_socket_t read_fd, struct timeval *now)
+{
+ struct server_state *server;
+ int i;
+ ssize_t count;
+ unsigned char buf[PACKETSZ + 1];
+#ifdef HAVE_RECVFROM
+ ares_socklen_t fromlen;
+ union {
+ struct sockaddr sa;
+ struct sockaddr_in sa4;
+ struct sockaddr_in6 sa6;
+ } from;
+#endif
+
+ if(!read_fds && (read_fd == ARES_SOCKET_BAD))
+ /* no possible action */
+ return;
+
+ for (i = 0; i < channel->nservers; i++)
+ {
+ /* Make sure the server has a socket and is selected in read_fds. */
+ server = &channel->servers[i];
+
+ if (server->udp_socket == ARES_SOCKET_BAD || server->is_broken)
+ continue;
+
+ if(read_fds) {
+ if(!FD_ISSET(server->udp_socket, read_fds))
+ continue;
+ }
+ else {
+ if(server->udp_socket != read_fd)
+ continue;
+ }
+
+ if(read_fds)
+ /* If there's an error and we close this socket, then open
+ * another with the same fd to talk to another server, then we
+ * don't want to think that it was the new socket that was
+ * ready. This is not disastrous, but is likely to result in
+ * extra system calls and confusion. */
+ FD_CLR(server->udp_socket, read_fds);
+
+ /* To reduce event loop overhead, read and process as many
+ * packets as we can. */
+ do {
+#ifdef HAVE_RECVFROM
+ if (server->addr.family == AF_INET)
+ fromlen = sizeof(from.sa4);
+ else
+ fromlen = sizeof(from.sa6);
+ count = (ssize_t)recvfrom(server->udp_socket, (void *)buf, sizeof(buf),
+ 0, &from.sa, &fromlen);
+#else
+ count = sread(server->udp_socket, buf, sizeof(buf));
+#endif
+ if (count == -1 && try_again(SOCKERRNO))
+ continue;
+ else if (count <= 0)
+ handle_error(channel, i, now);
+#ifdef HAVE_RECVFROM
+ else if (!same_address(&from.sa, &server->addr))
+ /* The address the response comes from does not match
+ * the address we sent the request to. Someone may be
+ * attempting to perform a cache poisoning attack. */
+ break;
+#endif
+ else
+ process_answer(channel, buf, (int)count, i, 0, now);
+ } while (count > 0);
+ }
+}
+
+/* If any queries have timed out, note the timeout and move them on. */
+static void process_timeouts(ares_channel channel, struct timeval *now)
+{
+ time_t t; /* the time of the timeouts we're processing */
+ struct query *query;
+ struct list_node* list_head;
+ struct list_node* list_node;
+
+ /* Process all the timeouts that have fired since the last time we
+ * processed timeouts. If things are going well, then we'll have
+ * hundreds/thousands of queries that fall into future buckets, and
+ * only a handful of requests that fall into the "now" bucket, so
+ * this should be quite quick.
+ */
+ for (t = channel->last_timeout_processed; t <= now->tv_sec; t++)
+ {
+ list_head = &(channel->queries_by_timeout[t % ARES_TIMEOUT_TABLE_SIZE]);
+ for (list_node = list_head->next; list_node != list_head; )
+ {
+ query = list_node->data;
+ list_node = list_node->next; /* in case the query gets deleted */
+ if (query->timeout.tv_sec && ares__timedout(now, &query->timeout))
+ {
+ query->error_status = ARES_ETIMEOUT;
+ ++query->timeouts;
+ next_server(channel, query, now);
+ }
+ }
+ }
+ channel->last_timeout_processed = now->tv_sec;
+}
+
+/* Handle an answer from a server. */
+static void process_answer(ares_channel channel, unsigned char *abuf,
+ int alen, int whichserver, int tcp,
+ struct timeval *now)
+{
+ int tc, rcode;
+ unsigned short id;
+ struct query *query;
+ struct list_node* list_head;
+ struct list_node* list_node;
+
+ /* If there's no room in the answer for a header, we can't do much
+ * with it. */
+ if (alen < HFIXEDSZ)
+ return;
+
+ /* Grab the query ID, truncate bit, and response code from the packet. */
+ id = DNS_HEADER_QID(abuf);
+ tc = DNS_HEADER_TC(abuf);
+ rcode = DNS_HEADER_RCODE(abuf);
+
+ /* Find the query corresponding to this packet. The queries are
+ * hashed/bucketed by query id, so this lookup should be quick.
+ * Note that both the query id and the questions must be the same;
+ * when the query id wraps around we can have multiple outstanding
+ * queries with the same query id, so we need to check both the id and
+ * question.
+ */
+ query = NULL;
+ list_head = &(channel->queries_by_qid[id % ARES_QID_TABLE_SIZE]);
+ for (list_node = list_head->next; list_node != list_head;
+ list_node = list_node->next)
+ {
+ struct query *q = list_node->data;
+ if ((q->qid == id) && same_questions(q->qbuf, q->qlen, abuf, alen))
+ {
+ query = q;
+ break;
+ }
+ }
+ if (!query)
+ return;
+
+ /* If we got a truncated UDP packet and are not ignoring truncation,
+ * don't accept the packet, and switch the query to TCP if we hadn't
+ * done so already.
+ */
+ if ((tc || alen > PACKETSZ) && !tcp && !(channel->flags & ARES_FLAG_IGNTC))
+ {
+ if (!query->using_tcp)
+ {
+ query->using_tcp = 1;
+ ares__send_query(channel, query, now);
+ }
+ return;
+ }
+
+ /* Limit alen to PACKETSZ if we aren't using TCP (only relevant if we
+ * are ignoring truncation.
+ */
+ if (alen > PACKETSZ && !tcp)
+ alen = PACKETSZ;
+
+ /* If we aren't passing through all error packets, discard packets
+ * with SERVFAIL, NOTIMP, or REFUSED response codes.
+ */
+ if (!(channel->flags & ARES_FLAG_NOCHECKRESP))
+ {
+ if (rcode == SERVFAIL || rcode == NOTIMP || rcode == REFUSED)
+ {
+ skip_server(channel, query, whichserver);
+ if (query->server == whichserver)
+ next_server(channel, query, now);
+ return;
+ }
+ }
+
+ end_query(channel, query, ARES_SUCCESS, abuf, alen);
+}
+
+/* Close all the connections that are no longer usable. */
+static void process_broken_connections(ares_channel channel,
+ struct timeval *now)
+{
+ int i;
+ for (i = 0; i < channel->nservers; i++)
+ {
+ struct server_state *server = &channel->servers[i];
+ if (server->is_broken)
+ {
+ handle_error(channel, i, now);
+ }
+ }
+}
+
+static void handle_error(ares_channel channel, int whichserver,
+ struct timeval *now)
+{
+ struct server_state *server;
+ struct query *query;
+ struct list_node list_head;
+ struct list_node* list_node;
+
+ server = &channel->servers[whichserver];
+
+ /* Reset communications with this server. */
+ ares__close_sockets(channel, server);
+
+ /* Tell all queries talking to this server to move on and not try
+ * this server again. We steal the current list of queries that were
+ * in-flight to this server, since when we call next_server this can
+ * cause the queries to be re-sent to this server, which will
+ * re-insert these queries in that same server->queries_to_server
+ * list.
+ */
+ ares__init_list_head(&list_head);
+ ares__swap_lists(&list_head, &(server->queries_to_server));
+ for (list_node = list_head.next; list_node != &list_head; )
+ {
+ query = list_node->data;
+ list_node = list_node->next; /* in case the query gets deleted */
+ assert(query->server == whichserver);
+ skip_server(channel, query, whichserver);
+ next_server(channel, query, now);
+ }
+ /* Each query should have removed itself from our temporary list as
+ * it re-sent itself or finished up...
+ */
+ assert(ares__is_list_empty(&list_head));
+}
+
+static void skip_server(ares_channel channel, struct query *query,
+ int whichserver) {
+ /* The given server gave us problems with this query, so if we have
+ * the luxury of using other servers, then let's skip the
+ * potentially broken server and just use the others. If we only
+ * have one server and we need to retry then we should just go ahead
+ * and re-use that server, since it's our only hope; perhaps we
+ * just got unlucky, and retrying will work (eg, the server timed
+ * out our TCP connection just as we were sending another request).
+ */
+ if (channel->nservers > 1)
+ {
+ query->server_info[whichserver].skip_server = 1;
+ }
+}
+
+static void next_server(ares_channel channel, struct query *query,
+ struct timeval *now)
+{
+ /* We need to try each server channel->tries times. We have channel->nservers
+ * servers to try. In total, we need to do channel->nservers * channel->tries
+ * attempts. Use query->try to remember how many times we already attempted
+ * this query. Use modular arithmetic to find the next server to try. */
+ while (++(query->try) < (channel->nservers * channel->tries))
+ {
+ struct server_state *server;
+
+ /* Move on to the next server. */
+ query->server = (query->server + 1) % channel->nservers;
+ server = &channel->servers[query->server];
+
+ /* We don't want to use this server if (1) we decided this
+ * connection is broken, and thus about to be closed, (2)
+ * we've decided to skip this server because of earlier
+ * errors we encountered, or (3) we already sent this query
+ * over this exact connection.
+ */
+ if (!server->is_broken &&
+ !query->server_info[query->server].skip_server &&
+ !(query->using_tcp &&
+ (query->server_info[query->server].tcp_connection_generation ==
+ server->tcp_connection_generation)))
+ {
+ ares__send_query(channel, query, now);
+ return;
+ }
+
+ /* You might think that with TCP we only need one try. However,
+ * even when using TCP, servers can time-out our connection just
+ * as we're sending a request, or close our connection because
+ * they die, or never send us a reply because they get wedged or
+ * tickle a bug that drops our request.
+ */
+ }
+
+ /* If we are here, all attempts to perform query failed. */
+ end_query(channel, query, query->error_status, NULL, 0);
+}
+
+void ares__send_query(ares_channel channel, struct query *query,
+ struct timeval *now)
+{
+ struct send_request *sendreq;
+ struct server_state *server;
+ int timeplus;
+
+ server = &channel->servers[query->server];
+ if (query->using_tcp)
+ {
+ /* Make sure the TCP socket for this server is set up and queue
+ * a send request.
+ */
+ if (server->tcp_socket == ARES_SOCKET_BAD)
+ {
+ if (open_tcp_socket(channel, server) == -1)
+ {
+ skip_server(channel, query, query->server);
+ next_server(channel, query, now);
+ return;
+ }
+ }
+ sendreq = calloc(1, sizeof(struct send_request));
+ if (!sendreq)
+ {
+ end_query(channel, query, ARES_ENOMEM, NULL, 0);
+ return;
+ }
+ /* To make the common case fast, we avoid copies by using the
+ * query's tcpbuf for as long as the query is alive. In the rare
+ * case where the query ends while it's queued for transmission,
+ * then we give the sendreq its own copy of the request packet
+ * and put it in sendreq->data_storage.
+ */
+ sendreq->data_storage = NULL;
+ sendreq->data = query->tcpbuf;
+ sendreq->len = query->tcplen;
+ sendreq->owner_query = query;
+ sendreq->next = NULL;
+ if (server->qtail)
+ server->qtail->next = sendreq;
+ else
+ {
+ SOCK_STATE_CALLBACK(channel, server->tcp_socket, 1, 1);
+ server->qhead = sendreq;
+ }
+ server->qtail = sendreq;
+ query->server_info[query->server].tcp_connection_generation =
+ server->tcp_connection_generation;
+ }
+ else
+ {
+ if (server->udp_socket == ARES_SOCKET_BAD)
+ {
+ if (open_udp_socket(channel, server) == -1)
+ {
+ skip_server(channel, query, query->server);
+ next_server(channel, query, now);
+ return;
+ }
+ }
+ if (swrite(server->udp_socket, query->qbuf, query->qlen) == -1)
+ {
+ /* FIXME: Handle EAGAIN here since it likely can happen. */
+ skip_server(channel, query, query->server);
+ next_server(channel, query, now);
+ return;
+ }
+ }
+ timeplus = channel->timeout << (query->try / channel->nservers);
+ timeplus = (timeplus * (9 + (rand () & 7))) / 16;
+ query->timeout = *now;
+ ares__timeadd(&query->timeout,
+ timeplus);
+ /* Keep track of queries bucketed by timeout, so we can process
+ * timeout events quickly.
+ */
+ ares__remove_from_list(&(query->queries_by_timeout));
+ ares__insert_in_list(
+ &(query->queries_by_timeout),
+ &(channel->queries_by_timeout[query->timeout.tv_sec %
+ ARES_TIMEOUT_TABLE_SIZE]));
+
+ /* Keep track of queries bucketed by server, so we can process server
+ * errors quickly.
+ */
+ ares__remove_from_list(&(query->queries_to_server));
+ ares__insert_in_list(&(query->queries_to_server),
+ &(server->queries_to_server));
+}
+
+/*
+ * setsocknonblock sets the given socket to either blocking or non-blocking
+ * mode based on the 'nonblock' boolean argument. This function is highly
+ * portable.
+ */
+static int setsocknonblock(ares_socket_t sockfd, /* operate on this */
+ int nonblock /* TRUE or FALSE */)
+{
+#if defined(USE_BLOCKING_SOCKETS)
+
+ return 0; /* returns success */
+
+#elif defined(HAVE_FCNTL_O_NONBLOCK)
+
+ /* most recent unix versions */
+ int flags;
+ flags = fcntl(sockfd, F_GETFL, 0);
+ if (FALSE != nonblock)
+ return fcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
+ else
+ return fcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK));
+
+#elif defined(HAVE_IOCTL_FIONBIO)
+
+ /* older unix versions */
+ int flags;
+ flags = nonblock;
+ return ioctl(sockfd, FIONBIO, &flags);
+
+#elif defined(HAVE_IOCTLSOCKET_FIONBIO)
+
+#ifdef WATT32
+ char flags;
+#else
+ /* Windows */
+ unsigned long flags;
+#endif
+ flags = nonblock;
+ return ioctlsocket(sockfd, FIONBIO, &flags);
+
+#elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO)
+
+ /* Amiga */
+ return IoctlSocket(sockfd, FIONBIO, (long)nonblock);
+
+#elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK)
+
+ /* BeOS */
+ long b = nonblock ? 1 : 0;
+ return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
+
+#else
+# error "no non-blocking method was found/used/set"
+#endif
+}
+
+static int configure_socket(ares_socket_t s, int family, ares_channel channel)
+{
+ union {
+ struct sockaddr sa;
+ struct sockaddr_in sa4;
+ struct sockaddr_in6 sa6;
+ } local;
+
+ setsocknonblock(s, TRUE);
+
+#if defined(FD_CLOEXEC) && !defined(MSDOS)
+ /* Configure the socket fd as close-on-exec. */
+ if (fcntl(s, F_SETFD, FD_CLOEXEC) == -1)
+ return -1;
+#endif
+
+ /* Set the socket's send and receive buffer sizes. */
+ if ((channel->socket_send_buffer_size > 0) &&
+ setsockopt(s, SOL_SOCKET, SO_SNDBUF,
+ (void *)&channel->socket_send_buffer_size,
+ sizeof(channel->socket_send_buffer_size)) == -1)
+ return -1;
+
+ if ((channel->socket_receive_buffer_size > 0) &&
+ setsockopt(s, SOL_SOCKET, SO_RCVBUF,
+ (void *)&channel->socket_receive_buffer_size,
+ sizeof(channel->socket_receive_buffer_size)) == -1)
+ return -1;
+
+#ifdef SO_BINDTODEVICE
+ if (channel->local_dev_name[0]) {
+ if (setsockopt(s, SOL_SOCKET, SO_BINDTODEVICE,
+ channel->local_dev_name, sizeof(channel->local_dev_name))) {
+ /* Only root can do this, and usually not fatal if it doesn't work, so */
+ /* just continue on. */
+ }
+ }
+#endif
+
+ if (family == AF_INET) {
+ if (channel->local_ip4) {
+ memset(&local.sa4, 0, sizeof(local.sa4));
+ local.sa4.sin_family = AF_INET;
+ local.sa4.sin_addr.s_addr = htonl(channel->local_ip4);
+ if (bind(s, &local.sa, sizeof(local.sa4)) < 0)
+ return -1;
+ }
+ }
+ else if (family == AF_INET6) {
+ if (memcmp(channel->local_ip6, &ares_in6addr_any, sizeof(channel->local_ip6)) != 0) {
+ memset(&local.sa6, 0, sizeof(local.sa6));
+ local.sa6.sin6_family = AF_INET6;
+ memcpy(&local.sa6.sin6_addr, channel->local_ip6, sizeof(channel->local_ip6));
+ if (bind(s, &local.sa, sizeof(local.sa6)) < 0)
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int open_tcp_socket(ares_channel channel, struct server_state *server)
+{
+ ares_socket_t s;
+ int opt;
+ ares_socklen_t salen;
+ union {
+ struct sockaddr_in sa4;
+ struct sockaddr_in6 sa6;
+ } saddr;
+ struct sockaddr *sa;
+
+ switch (server->addr.family)
+ {
+ case AF_INET:
+ sa = (void *)&saddr.sa4;
+ salen = sizeof(saddr.sa4);
+ memset(sa, 0, salen);
+ saddr.sa4.sin_family = AF_INET;
+ saddr.sa4.sin_port = (unsigned short)(channel->tcp_port & 0xffff);
+ memcpy(&saddr.sa4.sin_addr, &server->addr.addrV4,
+ sizeof(server->addr.addrV4));
+ break;
+ case AF_INET6:
+ sa = (void *)&saddr.sa6;
+ salen = sizeof(saddr.sa6);
+ memset(sa, 0, salen);
+ saddr.sa6.sin6_family = AF_INET6;
+ saddr.sa6.sin6_port = (unsigned short)(channel->tcp_port & 0xffff);
+ memcpy(&saddr.sa6.sin6_addr, &server->addr.addrV6,
+ sizeof(server->addr.addrV6));
+ break;
+ default:
+ return -1;
+ }
+
+ /* Acquire a socket. */
+ s = socket(server->addr.family, SOCK_STREAM, 0);
+ if (s == ARES_SOCKET_BAD)
+ return -1;
+
+ /* Configure it. */
+ if (configure_socket(s, server->addr.family, channel) < 0)
+ {
+ sclose(s);
+ return -1;
+ }
+
+#ifdef TCP_NODELAY
+ /*
+ * Disable the Nagle algorithm (only relevant for TCP sockets, and thus not
+ * in configure_socket). In general, in DNS lookups we're pretty much
+ * interested in firing off a single request and then waiting for a reply,
+ * so batching isn't very interesting.
+ */
+ opt = 1;
+ if (setsockopt(s, IPPROTO_TCP, TCP_NODELAY,
+ (void *)&opt, sizeof(opt)) == -1)
+ {
+ sclose(s);
+ return -1;
+ }
+#endif
+
+ /* Connect to the server. */
+ if (connect(s, sa, salen) == -1)
+ {
+ int err = SOCKERRNO;
+
+ if (err != EINPROGRESS && err != EWOULDBLOCK)
+ {
+ sclose(s);
+ return -1;
+ }
+ }
+
+ if (channel->sock_create_cb)
+ {
+ int err = channel->sock_create_cb(s, SOCK_STREAM,
+ channel->sock_create_cb_data);
+ if (err < 0)
+ {
+ sclose(s);
+ return err;
+ }
+ }
+
+ SOCK_STATE_CALLBACK(channel, s, 1, 0);
+ server->tcp_buffer_pos = 0;
+ server->tcp_socket = s;
+ server->tcp_connection_generation = ++channel->tcp_connection_generation;
+ return 0;
+}
+
+static int open_udp_socket(ares_channel channel, struct server_state *server)
+{
+ ares_socket_t s;
+ ares_socklen_t salen;
+ union {
+ struct sockaddr_in sa4;
+ struct sockaddr_in6 sa6;
+ } saddr;
+ struct sockaddr *sa;
+
+ switch (server->addr.family)
+ {
+ case AF_INET:
+ sa = (void *)&saddr.sa4;
+ salen = sizeof(saddr.sa4);
+ memset(sa, 0, salen);
+ saddr.sa4.sin_family = AF_INET;
+ saddr.sa4.sin_port = (unsigned short)(channel->udp_port & 0xffff);
+ memcpy(&saddr.sa4.sin_addr, &server->addr.addrV4,
+ sizeof(server->addr.addrV4));
+ break;
+ case AF_INET6:
+ sa = (void *)&saddr.sa6;
+ salen = sizeof(saddr.sa6);
+ memset(sa, 0, salen);
+ saddr.sa6.sin6_family = AF_INET6;
+ saddr.sa6.sin6_port = (unsigned short)(channel->udp_port & 0xffff);
+ memcpy(&saddr.sa6.sin6_addr, &server->addr.addrV6,
+ sizeof(server->addr.addrV6));
+ break;
+ default:
+ return -1;
+ }
+
+ /* Acquire a socket. */
+ s = socket(server->addr.family, SOCK_DGRAM, 0);
+ if (s == ARES_SOCKET_BAD)
+ return -1;
+
+ /* Set the socket non-blocking. */
+ if (configure_socket(s, server->addr.family, channel) < 0)
+ {
+ sclose(s);
+ return -1;
+ }
+
+ /* Connect to the server. */
+ if (connect(s, sa, salen) == -1)
+ {
+ int err = SOCKERRNO;
+
+ if (err != EINPROGRESS && err != EWOULDBLOCK)
+ {
+ sclose(s);
+ return -1;
+ }
+ }
+
+ if (channel->sock_create_cb)
+ {
+ int err = channel->sock_create_cb(s, SOCK_DGRAM,
+ channel->sock_create_cb_data);
+ if (err < 0)
+ {
+ sclose(s);
+ return err;
+ }
+ }
+
+ SOCK_STATE_CALLBACK(channel, s, 1, 0);
+
+ server->udp_socket = s;
+ return 0;
+}
+
+static int same_questions(const unsigned char *qbuf, int qlen,
+ const unsigned char *abuf, int alen)
+{
+ struct {
+ const unsigned char *p;
+ int qdcount;
+ char *name;
+ long namelen;
+ int type;
+ int dnsclass;
+ } q, a;
+ int i, j;
+
+ if (qlen < HFIXEDSZ || alen < HFIXEDSZ)
+ return 0;
+
+ /* Extract qdcount from the request and reply buffers and compare them. */
+ q.qdcount = DNS_HEADER_QDCOUNT(qbuf);
+ a.qdcount = DNS_HEADER_QDCOUNT(abuf);
+ if (q.qdcount != a.qdcount)
+ return 0;
+
+ /* For each question in qbuf, find it in abuf. */
+ q.p = qbuf + HFIXEDSZ;
+ for (i = 0; i < q.qdcount; i++)
+ {
+ /* Decode the question in the query. */
+ if (ares_expand_name(q.p, qbuf, qlen, &q.name, &q.namelen)
+ != ARES_SUCCESS)
+ return 0;
+ q.p += q.namelen;
+ if (q.p + QFIXEDSZ > qbuf + qlen)
+ {
+ free(q.name);
+ return 0;
+ }
+ q.type = DNS_QUESTION_TYPE(q.p);
+ q.dnsclass = DNS_QUESTION_CLASS(q.p);
+ q.p += QFIXEDSZ;
+
+ /* Search for this question in the answer. */
+ a.p = abuf + HFIXEDSZ;
+ for (j = 0; j < a.qdcount; j++)
+ {
+ /* Decode the question in the answer. */
+ if (ares_expand_name(a.p, abuf, alen, &a.name, &a.namelen)
+ != ARES_SUCCESS)
+ {
+ free(q.name);
+ return 0;
+ }
+ a.p += a.namelen;
+ if (a.p + QFIXEDSZ > abuf + alen)
+ {
+ free(q.name);
+ free(a.name);
+ return 0;
+ }
+ a.type = DNS_QUESTION_TYPE(a.p);
+ a.dnsclass = DNS_QUESTION_CLASS(a.p);
+ a.p += QFIXEDSZ;
+
+ /* Compare the decoded questions. */
+ if (strcasecmp(q.name, a.name) == 0 && q.type == a.type
+ && q.dnsclass == a.dnsclass)
+ {
+ free(a.name);
+ break;
+ }
+ free(a.name);
+ }
+
+ free(q.name);
+ if (j == a.qdcount)
+ return 0;
+ }
+ return 1;
+}
+
+static int same_address(struct sockaddr *sa, struct ares_addr *aa)
+{
+ void *addr1;
+ void *addr2;
+
+ if (sa->sa_family == aa->family)
+ {
+ switch (aa->family)
+ {
+ case AF_INET:
+ addr1 = &aa->addrV4;
+ addr2 = &((struct sockaddr_in *)sa)->sin_addr;
+ if (memcmp(addr1, addr2, sizeof(aa->addrV4)) == 0)
+ return 1; /* match */
+ break;
+ case AF_INET6:
+ addr1 = &aa->addrV6;
+ addr2 = &((struct sockaddr_in6 *)sa)->sin6_addr;
+ if (memcmp(addr1, addr2, sizeof(aa->addrV6)) == 0)
+ return 1; /* match */
+ break;
+ default:
+ break;
+ }
+ }
+ return 0; /* different */
+}
+
+static void end_query (ares_channel channel, struct query *query, int status,
+ unsigned char *abuf, int alen)
+{
+ int i;
+
+ /* First we check to see if this query ended while one of our send
+ * queues still has pointers to it.
+ */
+ for (i = 0; i < channel->nservers; i++)
+ {
+ struct server_state *server = &channel->servers[i];
+ struct send_request *sendreq;
+ for (sendreq = server->qhead; sendreq; sendreq = sendreq->next)
+ if (sendreq->owner_query == query)
+ {
+ sendreq->owner_query = NULL;
+ assert(sendreq->data_storage == NULL);
+ if (status == ARES_SUCCESS)
+ {
+ /* We got a reply for this query, but this queued
+ * sendreq points into this soon-to-be-gone query's
+ * tcpbuf. Probably this means we timed out and queued
+ * the query for retransmission, then received a
+ * response before actually retransmitting. This is
+ * perfectly fine, so we want to keep the connection
+ * running smoothly if we can. But in the worst case
+ * we may have sent only some prefix of the query,
+ * with some suffix of the query left to send. Also,
+ * the buffer may be queued on multiple queues. To
+ * prevent dangling pointers to the query's tcpbuf and
+ * handle these cases, we just give such sendreqs
+ * their own copy of the query packet.
+ */
+ sendreq->data_storage = malloc(sendreq->len);
+ if (sendreq->data_storage != NULL)
+ {
+ memcpy(sendreq->data_storage, sendreq->data, sendreq->len);
+ sendreq->data = sendreq->data_storage;
+ }
+ }
+ if ((status != ARES_SUCCESS) || (sendreq->data_storage == NULL))
+ {
+ /* We encountered an error (probably a timeout,
+ * suggesting the DNS server we're talking to is
+ * probably unreachable, wedged, or severely
+ * overloaded) or we couldn't copy the request, so
+ * mark the connection as broken. When we get to
+ * process_broken_connections() we'll close the
+ * connection and try to re-send requests to another
+ * server.
+ */
+ server->is_broken = 1;
+ /* Just to be paranoid, zero out this sendreq... */
+ sendreq->data = NULL;
+ sendreq->len = 0;
+ }
+ }
+ }
+
+ /* Invoke the callback */
+ query->callback(query->arg, status, query->timeouts, abuf, alen);
+ ares__free_query(query);
+
+ /* Simple cleanup policy: if no queries are remaining, close all
+ * network sockets unless STAYOPEN is set.
+ */
+ if (!(channel->flags & ARES_FLAG_STAYOPEN) &&
+ ares__is_list_empty(&(channel->all_queries)))
+ {
+ for (i = 0; i < channel->nservers; i++)
+ ares__close_sockets(channel, &channel->servers[i]);
+ }
+}
+
+void ares__free_query(struct query *query)
+{
+ /* Remove the query from all the lists in which it is linked */
+ ares__remove_from_list(&(query->queries_by_qid));
+ ares__remove_from_list(&(query->queries_by_timeout));
+ ares__remove_from_list(&(query->queries_to_server));
+ ares__remove_from_list(&(query->all_queries));
+ /* Zero out some important stuff, to help catch bugs */
+ query->callback = NULL;
+ query->arg = NULL;
+ /* Deallocate the memory associated with the query */
+ free(query->tcpbuf);
+ free(query->server_info);
+ free(query);
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#include <stdlib.h>
+#include "ares.h"
+#include "ares_dns.h"
+#include "ares_private.h"
+
+struct qquery {
+ ares_callback callback;
+ void *arg;
+};
+
+static void qcallback(void *arg, int status, int timeouts, unsigned char *abuf, int alen);
+
+void ares__rc4(rc4_key* key, unsigned char *buffer_ptr, int buffer_len)
+{
+ unsigned char x;
+ unsigned char y;
+ unsigned char* state;
+ unsigned char xorIndex;
+ short counter;
+
+ x = key->x;
+ y = key->y;
+
+ state = &key->state[0];
+ for(counter = 0; counter < buffer_len; counter ++)
+ {
+ x = (unsigned char)((x + 1) % 256);
+ y = (unsigned char)((state[x] + y) % 256);
+ ARES_SWAP_BYTE(&state[x], &state[y]);
+
+ xorIndex = (unsigned char)((state[x] + state[y]) % 256);
+
+ buffer_ptr[counter] = (unsigned char)(buffer_ptr[counter]^state[xorIndex]);
+ }
+ key->x = x;
+ key->y = y;
+}
+
+static struct query* find_query_by_id(ares_channel channel, unsigned short id)
+{
+ unsigned short qid;
+ struct list_node* list_head;
+ struct list_node* list_node;
+ DNS_HEADER_SET_QID(((unsigned char*)&qid), id);
+
+ /* Find the query corresponding to this packet. */
+ list_head = &(channel->queries_by_qid[qid % ARES_QID_TABLE_SIZE]);
+ for (list_node = list_head->next; list_node != list_head;
+ list_node = list_node->next)
+ {
+ struct query *q = list_node->data;
+ if (q->qid == qid)
+ return q;
+ }
+ return NULL;
+}
+
+
+/* a unique query id is generated using an rc4 key. Since the id may already
+ be used by a running query (as infrequent as it may be), a lookup is
+ performed per id generation. In practice this search should happen only
+ once per newly generated id
+*/
+static unsigned short generate_unique_id(ares_channel channel)
+{
+ unsigned short id;
+
+ do {
+ id = ares__generate_new_id(&channel->id_key);
+ } while (find_query_by_id(channel, id));
+
+ return (unsigned short)id;
+}
+
+void ares_query(ares_channel channel, const char *name, int dnsclass,
+ int type, ares_callback callback, void *arg)
+{
+ struct qquery *qquery;
+ unsigned char *qbuf;
+ int qlen, rd, status;
+
+ /* Compose the query. */
+ rd = !(channel->flags & ARES_FLAG_NORECURSE);
+ status = ares_mkquery(name, dnsclass, type, channel->next_id, rd, &qbuf,
+ &qlen);
+ if (status != ARES_SUCCESS)
+ {
+ if (qbuf != NULL) free(qbuf);
+ callback(arg, status, 0, NULL, 0);
+ return;
+ }
+
+ channel->next_id = generate_unique_id(channel);
+
+ /* Allocate and fill in the query structure. */
+ qquery = malloc(sizeof(struct qquery));
+ if (!qquery)
+ {
+ ares_free_string(qbuf);
+ callback(arg, ARES_ENOMEM, 0, NULL, 0);
+ return;
+ }
+ qquery->callback = callback;
+ qquery->arg = arg;
+
+ /* Send it off. qcallback will be called when we get an answer. */
+ ares_send(channel, qbuf, qlen, qcallback, qquery);
+ ares_free_string(qbuf);
+}
+
+static void qcallback(void *arg, int status, int timeouts, unsigned char *abuf, int alen)
+{
+ struct qquery *qquery = (struct qquery *) arg;
+ unsigned int ancount;
+ int rcode;
+
+ if (status != ARES_SUCCESS)
+ qquery->callback(qquery->arg, status, timeouts, abuf, alen);
+ else
+ {
+ /* Pull the response code and answer count from the packet. */
+ rcode = DNS_HEADER_RCODE(abuf);
+ ancount = DNS_HEADER_ANCOUNT(abuf);
+
+ /* Convert errors. */
+ switch (rcode)
+ {
+ case NOERROR:
+ status = (ancount > 0) ? ARES_SUCCESS : ARES_ENODATA;
+ break;
+ case FORMERR:
+ status = ARES_EFORMERR;
+ break;
+ case SERVFAIL:
+ status = ARES_ESERVFAIL;
+ break;
+ case NXDOMAIN:
+ status = ARES_ENOTFOUND;
+ break;
+ case NOTIMP:
+ status = ARES_ENOTIMP;
+ break;
+ case REFUSED:
+ status = ARES_EREFUSED;
+ break;
+ }
+ qquery->callback(qquery->arg, status, timeouts, abuf, alen);
+ }
+ free(qquery);
+}
--- /dev/null
+#ifndef __CARES_RULES_H
+#define __CARES_RULES_H
+
+
+/* Copyright (C) 2009 by Daniel Stenberg et al
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. M.I.T. makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+/* ================================================================ */
+/* COMPILE TIME SANITY CHECKS */
+/* ================================================================ */
+
+/*
+ * NOTE 1:
+ * -------
+ *
+ * All checks done in this file are intentionally placed in a public
+ * header file which is pulled by ares.h when an application is
+ * being built using an already built c-ares library. Additionally
+ * this file is also included and used when building the library.
+ *
+ * If compilation fails on this file it is certainly sure that the
+ * problem is elsewhere. It could be a problem in the ares_build.h
+ * header file, or simply that you are using different compilation
+ * settings than those used to build the library.
+ *
+ * Nothing in this file is intended to be modified or adjusted by the
+ * c-ares library user nor by the c-ares library builder.
+ *
+ * Do not deactivate any check, these are done to make sure that the
+ * library is properly built and used.
+ *
+ * You can find further help on the c-ares development mailing list:
+ * http://cool.haxx.se/mailman/listinfo/c-ares/
+ *
+ * NOTE 2
+ * ------
+ *
+ * Some of the following compile time checks are based on the fact
+ * that the dimension of a constant array can not be a negative one.
+ * In this way if the compile time verification fails, the compilation
+ * will fail issuing an error. The error description wording is compiler
+ * dependent but it will be quite similar to one of the following:
+ *
+ * "negative subscript or subscript is too large"
+ * "array must have at least one element"
+ * "-1 is an illegal array size"
+ * "size of array is negative"
+ *
+ * If you are building an application which tries to use an already
+ * built c-ares library and you are getting this kind of errors on
+ * this file, it is a clear indication that there is a mismatch between
+ * how the library was built and how you are trying to use it for your
+ * application. Your already compiled or binary library provider is the
+ * only one who can give you the details you need to properly use it.
+ */
+
+/*
+ * Verify that some macros are actually defined.
+ */
+
+#ifndef CARES_SIZEOF_LONG
+# error "CARES_SIZEOF_LONG definition is missing!"
+ Error Compilation_aborted_CARES_SIZEOF_LONG_is_missing
+#endif
+
+#ifndef CARES_TYPEOF_ARES_SOCKLEN_T
+# error "CARES_TYPEOF_ARES_SOCKLEN_T definition is missing!"
+ Error Compilation_aborted_CARES_TYPEOF_ARES_SOCKLEN_T_is_missing
+#endif
+
+#ifndef CARES_SIZEOF_ARES_SOCKLEN_T
+# error "CARES_SIZEOF_ARES_SOCKLEN_T definition is missing!"
+ Error Compilation_aborted_CARES_SIZEOF_ARES_SOCKLEN_T_is_missing
+#endif
+
+/*
+ * Macros private to this header file.
+ */
+
+#define CareschkszEQ(t, s) sizeof(t) == s ? 1 : -1
+
+#define CareschkszGE(t1, t2) sizeof(t1) >= sizeof(t2) ? 1 : -1
+
+/*
+ * Verify that the size previously defined and expected for long
+ * is the same as the one reported by sizeof() at compile time.
+ */
+
+typedef char
+ __cares_rule_01__
+ [CareschkszEQ(long, CARES_SIZEOF_LONG)];
+
+/*
+ * Verify that the size previously defined and expected for
+ * ares_socklen_t is actually the the same as the one reported
+ * by sizeof() at compile time.
+ */
+
+typedef char
+ __cares_rule_02__
+ [CareschkszEQ(ares_socklen_t, CARES_SIZEOF_ARES_SOCKLEN_T)];
+
+/*
+ * Verify at compile time that the size of ares_socklen_t as reported
+ * by sizeof() is greater or equal than the one reported for int for
+ * the current compilation.
+ */
+
+typedef char
+ __cares_rule_03__
+ [CareschkszGE(ares_socklen_t, int)];
+
+/* ================================================================ */
+/* EXTERNALLY AND INTERNALLY VISIBLE DEFINITIONS */
+/* ================================================================ */
+
+/*
+ * Get rid of macros private to this header file.
+ */
+
+#undef CareschkszEQ
+#undef CareschkszGE
+
+/*
+ * Get rid of macros not intended to exist beyond this point.
+ */
+
+#undef CARES_PULL_WS2TCPIP_H
+#undef CARES_PULL_SYS_TYPES_H
+#undef CARES_PULL_SYS_SOCKET_H
+
+#undef CARES_TYPEOF_ARES_SOCKLEN_T
+
+#endif /* __CARES_RULES_H */
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+
+#include "ares.h"
+#include "ares_private.h"
+
+struct search_query {
+ /* Arguments passed to ares_search */
+ ares_channel channel;
+ char *name; /* copied into an allocated buffer */
+ int dnsclass;
+ int type;
+ ares_callback callback;
+ void *arg;
+
+ int status_as_is; /* error status from trying as-is */
+ int next_domain; /* next search domain to try */
+ int trying_as_is; /* current query is for name as-is */
+ int timeouts; /* number of timeouts we saw for this request */
+ int ever_got_nodata; /* did we ever get ARES_ENODATA along the way? */
+};
+
+static void search_callback(void *arg, int status, int timeouts,
+ unsigned char *abuf, int alen);
+static void end_squery(struct search_query *squery, int status,
+ unsigned char *abuf, int alen);
+static int cat_domain(const char *name, const char *domain, char **s);
+static int single_domain(ares_channel channel, const char *name, char **s);
+
+void ares_search(ares_channel channel, const char *name, int dnsclass,
+ int type, ares_callback callback, void *arg)
+{
+ struct search_query *squery;
+ char *s;
+ const char *p;
+ int status, ndots;
+
+ /* If name only yields one domain to search, then we don't have
+ * to keep extra state, so just do an ares_query().
+ */
+ status = single_domain(channel, name, &s);
+ if (status != ARES_SUCCESS)
+ {
+ callback(arg, status, 0, NULL, 0);
+ return;
+ }
+ if (s)
+ {
+ ares_query(channel, s, dnsclass, type, callback, arg);
+ free(s);
+ return;
+ }
+
+ /* Allocate a search_query structure to hold the state necessary for
+ * doing multiple lookups.
+ */
+ squery = malloc(sizeof(struct search_query));
+ if (!squery)
+ {
+ callback(arg, ARES_ENOMEM, 0, NULL, 0);
+ return;
+ }
+ squery->channel = channel;
+ squery->name = strdup(name);
+ if (!squery->name)
+ {
+ free(squery);
+ callback(arg, ARES_ENOMEM, 0, NULL, 0);
+ return;
+ }
+ squery->dnsclass = dnsclass;
+ squery->type = type;
+ squery->status_as_is = -1;
+ squery->callback = callback;
+ squery->arg = arg;
+ squery->timeouts = 0;
+ squery->ever_got_nodata = 0;
+
+ /* Count the number of dots in name. */
+ ndots = 0;
+ for (p = name; *p; p++)
+ {
+ if (*p == '.')
+ ndots++;
+ }
+
+ /* If ndots is at least the channel ndots threshold (usually 1),
+ * then we try the name as-is first. Otherwise, we try the name
+ * as-is last.
+ */
+ if (ndots >= channel->ndots)
+ {
+ /* Try the name as-is first. */
+ squery->next_domain = 0;
+ squery->trying_as_is = 1;
+ ares_query(channel, name, dnsclass, type, search_callback, squery);
+ }
+ else
+ {
+ /* Try the name as-is last; start with the first search domain. */
+ squery->next_domain = 1;
+ squery->trying_as_is = 0;
+ status = cat_domain(name, channel->domains[0], &s);
+ if (status == ARES_SUCCESS)
+ {
+ ares_query(channel, s, dnsclass, type, search_callback, squery);
+ free(s);
+ }
+ else
+ {
+ /* failed, free the malloc()ed memory */
+ free(squery->name);
+ free(squery);
+ callback(arg, status, 0, NULL, 0);
+ }
+ }
+}
+
+static void search_callback(void *arg, int status, int timeouts,
+ unsigned char *abuf, int alen)
+{
+ struct search_query *squery = (struct search_query *) arg;
+ ares_channel channel = squery->channel;
+ char *s;
+
+ squery->timeouts += timeouts;
+
+ /* Stop searching unless we got a non-fatal error. */
+ if (status != ARES_ENODATA && status != ARES_ESERVFAIL
+ && status != ARES_ENOTFOUND)
+ end_squery(squery, status, abuf, alen);
+ else
+ {
+ /* Save the status if we were trying as-is. */
+ if (squery->trying_as_is)
+ squery->status_as_is = status;
+
+ /*
+ * If we ever get ARES_ENODATA along the way, record that; if the search
+ * should run to the very end and we got at least one ARES_ENODATA,
+ * then callers like ares_gethostbyname() may want to try a T_A search
+ * even if the last domain we queried for T_AAAA resource records
+ * returned ARES_ENOTFOUND.
+ */
+ if (status == ARES_ENODATA)
+ squery->ever_got_nodata = 1;
+
+ if (squery->next_domain < channel->ndomains)
+ {
+ /* Try the next domain. */
+ status = cat_domain(squery->name,
+ channel->domains[squery->next_domain], &s);
+ if (status != ARES_SUCCESS)
+ end_squery(squery, status, NULL, 0);
+ else
+ {
+ squery->trying_as_is = 0;
+ squery->next_domain++;
+ ares_query(channel, s, squery->dnsclass, squery->type,
+ search_callback, squery);
+ free(s);
+ }
+ }
+ else if (squery->status_as_is == -1)
+ {
+ /* Try the name as-is at the end. */
+ squery->trying_as_is = 1;
+ ares_query(channel, squery->name, squery->dnsclass, squery->type,
+ search_callback, squery);
+ }
+ else {
+ if (squery->status_as_is == ARES_ENOTFOUND && squery->ever_got_nodata) {
+ end_squery(squery, ARES_ENODATA, NULL, 0);
+ }
+ else
+ end_squery(squery, squery->status_as_is, NULL, 0);
+ }
+ }
+}
+
+static void end_squery(struct search_query *squery, int status,
+ unsigned char *abuf, int alen)
+{
+ squery->callback(squery->arg, status, squery->timeouts, abuf, alen);
+ free(squery->name);
+ free(squery);
+}
+
+/* Concatenate two domains. */
+static int cat_domain(const char *name, const char *domain, char **s)
+{
+ size_t nlen = strlen(name);
+ size_t dlen = strlen(domain);
+
+ *s = malloc(nlen + 1 + dlen + 1);
+ if (!*s)
+ return ARES_ENOMEM;
+ memcpy(*s, name, nlen);
+ (*s)[nlen] = '.';
+ memcpy(*s + nlen + 1, domain, dlen);
+ (*s)[nlen + 1 + dlen] = 0;
+ return ARES_SUCCESS;
+}
+
+/* Determine if this name only yields one query. If it does, set *s to
+ * the string we should query, in an allocated buffer. If not, set *s
+ * to NULL.
+ */
+static int single_domain(ares_channel channel, const char *name, char **s)
+{
+ size_t len = strlen(name);
+ const char *hostaliases;
+ FILE *fp;
+ char *line = NULL;
+ int status;
+ size_t linesize;
+ const char *p, *q;
+ int error;
+
+ /* If the name contains a trailing dot, then the single query is the name
+ * sans the trailing dot.
+ */
+ if (name[len - 1] == '.')
+ {
+ *s = strdup(name);
+ return (*s) ? ARES_SUCCESS : ARES_ENOMEM;
+ }
+
+ if (!(channel->flags & ARES_FLAG_NOALIASES) && !strchr(name, '.'))
+ {
+ /* The name might be a host alias. */
+ hostaliases = getenv("HOSTALIASES");
+ if (hostaliases)
+ {
+ fp = fopen(hostaliases, "r");
+ if (fp)
+ {
+ while ((status = ares__read_line(fp, &line, &linesize))
+ == ARES_SUCCESS)
+ {
+ if (strncasecmp(line, name, len) != 0 ||
+ !ISSPACE(line[len]))
+ continue;
+ p = line + len;
+ while (ISSPACE(*p))
+ p++;
+ if (*p)
+ {
+ q = p + 1;
+ while (*q && !ISSPACE(*q))
+ q++;
+ *s = malloc(q - p + 1);
+ if (*s)
+ {
+ memcpy(*s, p, q - p);
+ (*s)[q - p] = 0;
+ }
+ free(line);
+ fclose(fp);
+ return (*s) ? ARES_SUCCESS : ARES_ENOMEM;
+ }
+ }
+ free(line);
+ fclose(fp);
+ if (status != ARES_SUCCESS && status != ARES_EOF)
+ return status;
+ }
+ else
+ {
+ error = errno;
+ switch(error)
+ {
+ case ENOENT:
+ case ESRCH:
+ break;
+ default:
+ DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n",
+ error, strerror(error)));
+ DEBUGF(fprintf(stderr, "Error opening file: %s\n",
+ hostaliases));
+ *s = NULL;
+ return ARES_EFILE;
+ }
+ }
+ }
+ }
+
+ if (channel->flags & ARES_FLAG_NOSEARCH || channel->ndomains == 0)
+ {
+ /* No domain search to do; just try the name as-is. */
+ *s = strdup(name);
+ return (*s) ? ARES_SUCCESS : ARES_ENOMEM;
+ }
+
+ *s = NULL;
+ return ARES_SUCCESS;
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include "ares.h"
+#include "ares_dns.h"
+#include "ares_private.h"
+
+void ares_send(ares_channel channel, const unsigned char *qbuf, int qlen,
+ ares_callback callback, void *arg)
+{
+ struct query *query;
+ int i;
+ struct timeval now;
+
+ /* Verify that the query is at least long enough to hold the header. */
+ if (qlen < HFIXEDSZ || qlen >= (1 << 16))
+ {
+ callback(arg, ARES_EBADQUERY, 0, NULL, 0);
+ return;
+ }
+
+ /* Allocate space for query and allocated fields. */
+ query = malloc(sizeof(struct query));
+ if (!query)
+ {
+ callback(arg, ARES_ENOMEM, 0, NULL, 0);
+ return;
+ }
+ query->tcpbuf = malloc(qlen + 2);
+ if (!query->tcpbuf)
+ {
+ free(query);
+ callback(arg, ARES_ENOMEM, 0, NULL, 0);
+ return;
+ }
+ query->server_info = malloc(channel->nservers *
+ sizeof(query->server_info[0]));
+ if (!query->server_info)
+ {
+ free(query->tcpbuf);
+ free(query);
+ callback(arg, ARES_ENOMEM, 0, NULL, 0);
+ return;
+ }
+
+ /* Compute the query ID. Start with no timeout. */
+ query->qid = (unsigned short)DNS_HEADER_QID(qbuf);
+ query->timeout.tv_sec = 0;
+ query->timeout.tv_usec = 0;
+
+ /* Form the TCP query buffer by prepending qlen (as two
+ * network-order bytes) to qbuf.
+ */
+ query->tcpbuf[0] = (unsigned char)((qlen >> 8) & 0xff);
+ query->tcpbuf[1] = (unsigned char)(qlen & 0xff);
+ memcpy(query->tcpbuf + 2, qbuf, qlen);
+ query->tcplen = qlen + 2;
+
+ /* Fill in query arguments. */
+ query->qbuf = query->tcpbuf + 2;
+ query->qlen = qlen;
+ query->callback = callback;
+ query->arg = arg;
+
+ /* Initialize query status. */
+ query->try = 0;
+
+ /* Choose the server to send the query to. If rotation is enabled, keep track
+ * of the next server we want to use. */
+ query->server = channel->last_server;
+ if (channel->rotate == 1)
+ channel->last_server = (channel->last_server + 1) % channel->nservers;
+
+ for (i = 0; i < channel->nservers; i++)
+ {
+ query->server_info[i].skip_server = 0;
+ query->server_info[i].tcp_connection_generation = 0;
+ }
+ query->using_tcp = (channel->flags & ARES_FLAG_USEVC) || qlen > PACKETSZ;
+ query->error_status = ARES_ECONNREFUSED;
+ query->timeouts = 0;
+
+ /* Initialize our list nodes. */
+ ares__init_list_node(&(query->queries_by_qid), query);
+ ares__init_list_node(&(query->queries_by_timeout), query);
+ ares__init_list_node(&(query->queries_to_server), query);
+ ares__init_list_node(&(query->all_queries), query);
+
+ /* Chain the query into the list of all queries. */
+ ares__insert_in_list(&(query->all_queries), &(channel->all_queries));
+ /* Keep track of queries bucketed by qid, so we can process DNS
+ * responses quickly.
+ */
+ ares__insert_in_list(
+ &(query->queries_by_qid),
+ &(channel->queries_by_qid[query->qid % ARES_QID_TABLE_SIZE]));
+
+ /* Perform the first query action. */
+ now = ares__tvnow();
+ ares__send_query(channel, query, &now);
+}
--- /dev/null
+#ifndef HEADER_CARES_SETUP_H
+#define HEADER_CARES_SETUP_H
+
+/* $Id$ */
+
+/* Copyright (C) 2004 - 2009 by Daniel Stenberg et al
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. M.I.T. makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+/*
+ * Define WIN32 when build target is Win32 API
+ */
+
+#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32)
+#define WIN32
+#endif
+
+/*
+ * Include configuration script results or hand-crafted
+ * configuration file for platforms which lack config tool.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "ares_config.h"
+#else
+
+#ifdef WIN32
+#include "config-win32.h"
+#endif
+
+#endif /* HAVE_CONFIG_H */
+
+/* ================================================================ */
+/* Definition of preprocessor macros/symbols which modify compiler */
+/* behaviour or generated code characteristics must be done here, */
+/* as appropriate, before any system header file is included. It is */
+/* also possible to have them defined in the config file included */
+/* before this point. As a result of all this we frown inclusion of */
+/* system header files in our config files, avoid this at any cost. */
+/* ================================================================ */
+
+/*
+ * AIX 4.3 and newer needs _THREAD_SAFE defined to build
+ * proper reentrant code. Others may also need it.
+ */
+
+#ifdef NEED_THREAD_SAFE
+# ifndef _THREAD_SAFE
+# define _THREAD_SAFE
+# endif
+#endif
+
+/*
+ * Tru64 needs _REENTRANT set for a few function prototypes and
+ * things to appear in the system header files. Unixware needs it
+ * to build proper reentrant code. Others may also need it.
+ */
+
+#ifdef NEED_REENTRANT
+# ifndef _REENTRANT
+# define _REENTRANT
+# endif
+#endif
+
+/* ================================================================ */
+/* If you need to include a system header file for your platform, */
+/* please, do it beyond the point further indicated in this file. */
+/* ================================================================ */
+
+#if 0 /* libuv disabled */
+/*
+ * c-ares external interface definitions are also used internally,
+ * and might also include required system header files to define them.
+ */
+
+#include <ares_build.h>
+
+/*
+ * Compile time sanity checks must also be done when building the library.
+ */
+
+#include <ares_rules.h>
+#endif
+
+/* ================================================================= */
+/* No system header file shall be included in this file before this */
+/* point. The only allowed ones are those included from ares_build.h */
+/* ================================================================= */
+
+/*
+ * Include header files for windows builds before redefining anything.
+ * Use this preproessor block only to include or exclude windows.h,
+ * winsock2.h, ws2tcpip.h or winsock.h. Any other windows thing belongs
+ * to any other further and independent block. Under Cygwin things work
+ * just as under linux (e.g. <sys/socket.h>) and the winsock headers should
+ * never be included when __CYGWIN__ is defined. configure script takes
+ * care of this, not defining HAVE_WINDOWS_H, HAVE_WINSOCK_H, HAVE_WINSOCK2_H,
+ * neither HAVE_WS2TCPIP_H when __CYGWIN__ is defined.
+ */
+
+#ifdef HAVE_WINDOWS_H
+# ifdef HAVE_WINSOCK2_H
+# include <winsock2.h>
+# ifdef HAVE_WS2TCPIP_H
+# include <ws2tcpip.h>
+# endif
+# else
+# ifdef HAVE_WINSOCK_H
+# include <winsock.h>
+# endif
+# endif
+# include <windows.h>
+#endif
+
+/*
+ * Define USE_WINSOCK to 2 if we have and use WINSOCK2 API, else
+ * define USE_WINSOCK to 1 if we have and use WINSOCK API, else
+ * undefine USE_WINSOCK.
+ */
+
+#undef USE_WINSOCK
+
+#ifdef HAVE_WINSOCK2_H
+# define USE_WINSOCK 2
+#else
+# ifdef HAVE_WINSOCK_H
+# define USE_WINSOCK 1
+# endif
+#endif
+
+/*
+ * Work-arounds for systems without configure support
+ */
+
+#ifndef HAVE_CONFIG_H
+
+#if !defined(HAVE_SYS_TIME_H) && !defined(_MSC_VER) && !defined(__WATCOMC__)
+#define HAVE_SYS_TIME_H
+#endif
+
+#if !defined(HAVE_UNISTD_H) && !defined(_MSC_VER)
+#define HAVE_UNISTD_H 1
+#endif
+
+#if !defined(HAVE_SYS_UIO_H) && !defined(WIN32) && !defined(MSDOS)
+#define HAVE_SYS_UIO_H
+#endif
+
+#endif /* HAVE_CONFIG_H */
+
+#ifdef __POCC__
+# include <sys/types.h>
+# include <unistd.h>
+# define ESRCH 3
+#endif
+
+/*
+ * Recent autoconf versions define these symbols in ares_config.h. We don't
+ * want them (since they collide with the libcurl ones when we build
+ * --enable-debug) so we undef them again here.
+ */
+
+#undef PACKAGE_STRING
+#undef PACKAGE_TARNAME
+#undef PACKAGE_VERSION
+#undef PACKAGE_BUGREPORT
+#undef PACKAGE_NAME
+#undef VERSION
+#undef PACKAGE
+
+/* IPv6 compatibility */
+#if !defined(HAVE_AF_INET6)
+#if defined(HAVE_PF_INET6)
+#define AF_INET6 PF_INET6
+#else
+#define AF_INET6 AF_MAX+1
+#endif
+#endif
+
+/*
+ * Include macros and defines that should only be processed once.
+ */
+
+#ifndef __SETUP_ONCE_H
+#include "setup_once.h"
+#endif
+
+#endif /* HEADER_CARES_SETUP_H */
--- /dev/null
+
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+#include "ares_strcasecmp.h"
+
+#ifndef HAVE_STRCASECMP
+int ares_strcasecmp(const char *a, const char *b)
+{
+#if defined(HAVE_STRCMPI)
+ return strcmpi(a, b);
+#elif defined(HAVE_STRICMP)
+ return stricmp(a, b);
+#else
+ size_t i;
+
+ for (i = 0; i < (size_t)-1; i++) {
+ int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i];
+ int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i];
+ if (c1 != c2)
+ return c1-c2;
+ if (!c1)
+ break;
+ }
+ return 0;
+#endif
+}
+#endif
+
+#ifndef HAVE_STRNCASECMP
+int ares_strncasecmp(const char *a, const char *b, size_t n)
+{
+#if defined(HAVE_STRNCMPI)
+ return strncmpi(a, b, n);
+#elif defined(HAVE_STRNICMP)
+ return strnicmp(a, b, n);
+#else
+ size_t i;
+
+ for (i = 0; i < n; i++) {
+ int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i];
+ int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i];
+ if (c1 != c2)
+ return c1-c2;
+ if (!c1)
+ break;
+ }
+ return 0;
+#endif
+}
+#endif
+
--- /dev/null
+#ifndef HEADER_CARES_STRCASECMP_H
+#define HEADER_CARES_STRCASECMP_H
+
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifndef HAVE_STRCASECMP
+extern int ares_strcasecmp(const char *a, const char *b);
+#endif
+
+#ifndef HAVE_STRNCASECMP
+extern int ares_strncasecmp(const char *a, const char *b, size_t n);
+#endif
+
+#endif /* HEADER_CARES_STRCASECMP_H */
--- /dev/null
+
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+#include "ares_strdup.h"
+
+#ifndef HAVE_STRDUP
+char *ares_strdup(const char *s1)
+{
+ size_t sz;
+ char * s2;
+
+ if(s1) {
+ sz = strlen(s1);
+ if(sz < (size_t)-1) {
+ sz++;
+ if(sz < ((size_t)-1) / sizeof(char)) {
+ s2 = malloc(sz * sizeof(char));
+ if(s2) {
+ memcpy(s2, s1, sz * sizeof(char));
+ return s2;
+ }
+ }
+ }
+ }
+ return (char *)NULL;
+}
+#endif
--- /dev/null
+#ifndef HEADER_CARES_STRDUP_H
+#define HEADER_CARES_STRDUP_H
+
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifndef HAVE_STRDUP
+extern char *ares_strdup(const char *s1);
+#endif
+
+#endif /* HEADER_CARES_STRDUP_H */
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+#include <assert.h>
+#include "ares.h"
+
+const char *ares_strerror(int code)
+{
+ /* Return a string literal from a table. */
+ const char *errtext[] = {
+ "Successful completion",
+ "DNS server returned answer with no data",
+ "DNS server claims query was misformatted",
+ "DNS server returned general failure",
+ "Domain name not found",
+ "DNS server does not implement requested operation",
+ "DNS server refused query",
+ "Misformatted DNS query",
+ "Misformatted domain name",
+ "Unsupported address family",
+ "Misformatted DNS reply",
+ "Could not contact DNS servers",
+ "Timeout while contacting DNS servers",
+ "End of file",
+ "Error reading file",
+ "Out of memory",
+ "Channel is being destroyed",
+ "Misformatted string",
+ "Illegal flags specified",
+ "Given hostname is not numeric",
+ "Illegal hints flags specified",
+ "c-ares library initialization not yet performed",
+ "Error loading iphlpapi.dll",
+ "Could not find GetNetworkParams function",
+ "DNS query cancelled"
+ };
+
+ if(code >= 0 && code < (int)(sizeof(errtext) / sizeof(*errtext)))
+ return errtext[code];
+ else
+ return "unknown";
+}
--- /dev/null
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+
+#include <time.h>
+
+#include "ares.h"
+#include "ares_private.h"
+
+/* WARNING: Beware that this is linear in the number of outstanding
+ * requests! You are probably far better off just calling ares_process()
+ * once per second, rather than calling ares_timeout() to figure out
+ * when to next call ares_process().
+ */
+struct timeval *ares_timeout(ares_channel channel, struct timeval *maxtv,
+ struct timeval *tvbuf)
+{
+ struct query *query;
+ struct list_node* list_head;
+ struct list_node* list_node;
+ struct timeval now;
+ struct timeval nextstop;
+ long offset, min_offset;
+
+ /* No queries, no timeout (and no fetch of the current time). */
+ if (ares__is_list_empty(&(channel->all_queries)))
+ return maxtv;
+
+ /* Find the minimum timeout for the current set of queries. */
+ now = ares__tvnow();
+ min_offset = -1;
+
+ list_head = &(channel->all_queries);
+ for (list_node = list_head->next; list_node != list_head;
+ list_node = list_node->next)
+ {
+ query = list_node->data;
+ if (query->timeout.tv_sec == 0)
+ continue;
+ offset = ares__timeoffset(&now, &query->timeout);
+ if (offset < 0)
+ offset = 0;
+ if (min_offset == -1 || offset < min_offset)
+ min_offset = offset;
+ }
+
+ if(min_offset != -1) {
+ nextstop.tv_sec = min_offset/1000;
+ nextstop.tv_usec = (min_offset%1000)*1000;
+ }
+
+ /* If we found a minimum timeout and it's sooner than the one specified in
+ * maxtv (if any), return it. Otherwise go with maxtv.
+ */
+ if (min_offset != -1 && (!maxtv || ares__timedout(maxtv, &nextstop)))
+ {
+ *tvbuf = nextstop;
+ return tvbuf;
+ }
+ else
+ return maxtv;
+}
--- /dev/null
+
+#include "ares_setup.h"
+#include "ares.h"
+
+const char *ares_version(int *version)
+{
+ if(version)
+ *version = ARES_VERSION;
+
+ return ARES_VERSION_STR;
+}
--- /dev/null
+
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#include "ares.h"
+#include "ares_private.h"
+
+#ifndef HAVE_WRITEV
+ssize_t ares_writev(ares_socket_t s, const struct iovec *iov, int iovcnt)
+{
+ char *buffer, *bp;
+ int i;
+ size_t bytes = 0;
+ ssize_t result;
+
+ /* Validate iovcnt */
+ if (iovcnt <= 0)
+ {
+ SET_ERRNO(EINVAL);
+ return (-1);
+ }
+
+ /* Validate and find the sum of the iov_len values in the iov array */
+ for (i = 0; i < iovcnt; i++)
+ {
+ if (iov[i].iov_len > INT_MAX - bytes)
+ {
+ SET_ERRNO(EINVAL);
+ return (-1);
+ }
+ bytes += iov[i].iov_len;
+ }
+
+ if (bytes == 0)
+ return (0);
+
+ /* Allocate a temporary buffer to hold the data */
+ buffer = malloc(bytes);
+ if (!buffer)
+ {
+ SET_ERRNO(ENOMEM);
+ return (-1);
+ }
+
+ /* Copy the data into buffer */
+ for (bp = buffer, i = 0; i < iovcnt; ++i)
+ {
+ memcpy (bp, iov[i].iov_base, iov[i].iov_len);
+ bp += iov[i].iov_len;
+ }
+
+ /* Send buffer contents */
+ result = swrite(s, buffer, bytes);
+
+ free(buffer);
+
+ return (result);
+}
+#endif
+
--- /dev/null
+#ifndef HEADER_CARES_WRITEV_H
+#define HEADER_CARES_WRITEV_H
+
+
+/* Copyright 1998 by the Massachusetts Institute of Technology.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#include "ares_setup.h"
+#include "ares.h"
+
+#ifndef HAVE_WRITEV
+
+/* Structure for scatter/gather I/O. */
+struct iovec
+{
+ void *iov_base; /* Pointer to data. */
+ size_t iov_len; /* Length of data. */
+};
+
+extern ssize_t ares_writev(ares_socket_t s, const struct iovec *iov, int iovcnt);
+
+#endif
+
+#endif /* HEADER_CARES_WRITEV_H */
--- /dev/null
+
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1996,1999 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef HAVE_BITNCMP
+
+#include "ares_setup.h"
+#include "bitncmp.h"
+
+/*
+ * int
+ * bitncmp(l, r, n)
+ * compare bit masks l and r, for n bits.
+ * return:
+ * -1, 1, or 0 in the libc tradition.
+ * note:
+ * network byte order assumed. this means 192.5.5.240/28 has
+ * 0x11110000 in its fourth octet.
+ * author:
+ * Paul Vixie (ISC), June 1996
+ */
+int
+ares_bitncmp(const void *l, const void *r, int n) {
+ unsigned int lb, rb;
+ int x, b;
+
+ b = n / 8;
+ x = memcmp(l, r, b);
+ if (x || (n % 8) == 0)
+ return (x);
+
+ lb = ((const unsigned char *)l)[b];
+ rb = ((const unsigned char *)r)[b];
+ for (b = n % 8; b > 0; b--) {
+ if ((lb & 0x80) != (rb & 0x80)) {
+ if (lb & 0x80)
+ return (1);
+ return (-1);
+ }
+ lb <<= 1;
+ rb <<= 1;
+ }
+ return (0);
+}
+#endif
--- /dev/null
+#ifndef __ARES_BITNCMP_H
+#define __ARES_BITNCMP_H
+
+
+/* Copyright (C) 2005 by Dominick Meglio
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#ifndef HAVE_BITNCMP
+int ares_bitncmp(const void *l, const void *r, int n);
+#else
+#define ares_bitncmp(x,y,z) bitncmp(x,y,z)
+#endif
+
+#endif /* __ARES_BITNCMP_H */
--- /dev/null
+#ifndef __ARES_CONFIG_WIN32_H
+#define __ARES_CONFIG_WIN32_H
+
+
+/* Copyright (C) 2004 - 2008 by Daniel Stenberg et al
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. M.I.T. makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+/* ================================================================ */
+/* ares/config-win32.h - Hand crafted config file for Windows */
+/* ================================================================ */
+
+/* ---------------------------------------------------------------- */
+/* HEADER FILES */
+/* ---------------------------------------------------------------- */
+
+/* Define if you have the <getopt.h> header file. */
+#if defined(__MINGW32__) || defined(__POCC__)
+#define HAVE_GETOPT_H 1
+#endif
+
+/* Define if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define if you have the <process.h> header file. */
+#ifndef __SALFORDC__
+#define HAVE_PROCESS_H 1
+#endif
+
+/* Define if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define if you have the <sys/time.h> header file */
+/* #define HAVE_SYS_TIME_H 1 */
+
+/* Define if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define if you have the <unistd.h> header file. */
+#if defined(__MINGW32__) || defined(__WATCOMC__) || defined(__LCC__) || \
+ defined(__POCC__)
+#define HAVE_UNISTD_H 1
+#endif
+
+/* Define if you have the <winsock.h> header file. */
+#define HAVE_WINSOCK_H 1
+
+/* Define if you have the <winsock2.h> header file. */
+#ifndef __SALFORDC__
+#define HAVE_WINSOCK2_H 1
+#endif
+
+/* Define if you have the <ws2tcpip.h> header file. */
+#ifndef __SALFORDC__
+#define HAVE_WS2TCPIP_H 1
+#endif
+
+/* ---------------------------------------------------------------- */
+/* OTHER HEADER INFO */
+/* ---------------------------------------------------------------- */
+
+/* Define if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if you can safely include both <sys/time.h> and <time.h>. */
+/* #define TIME_WITH_SYS_TIME 1 */
+
+/* ---------------------------------------------------------------- */
+/* FUNCTIONS */
+/* ---------------------------------------------------------------- */
+
+/* Define if you have the closesocket function. */
+#define HAVE_CLOSESOCKET 1
+
+/* Define if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define if you have the ioctlsocket function. */
+#define HAVE_IOCTLSOCKET 1
+
+/* Define if you have a working ioctlsocket FIONBIO function. */
+#define HAVE_IOCTLSOCKET_FIONBIO 1
+
+/* Define if you have the strcasecmp function. */
+/* #define HAVE_STRCASECMP 1 */
+
+/* Define if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define if you have the stricmp function. */
+#define HAVE_STRICMP 1
+
+/* Define if you have the strncasecmp function. */
+/* #define HAVE_STRNCASECMP 1 */
+
+/* Define if you have the strnicmp function. */
+#define HAVE_STRNICMP 1
+
+/* Define if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 SOCKET
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 char *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 int
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV int
+
+/* Define if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 SOCKET
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 char
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 int
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 int
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV int
+
+/* Define if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 SOCKET
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 char *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 int
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV int
+
+/* Specifics for the Watt-32 tcp/ip stack */
+#ifdef WATT32
+ #define SOCKET int
+ #define NS_INADDRSZ 4
+ #define HAVE_ARPA_NAMESER_H 1
+ #define HAVE_ARPA_INET_H 1
+ #define HAVE_NETDB_H 1
+ #define HAVE_NETINET_IN_H 1
+ #define HAVE_SYS_SOCKET_H 1
+ #define HAVE_NETINET_TCP_H 1
+ #define HAVE_AF_INET6 1
+ #define HAVE_PF_INET6 1
+ #define HAVE_STRUCT_IN6_ADDR 1
+ #define HAVE_STRUCT_SOCKADDR_IN6 1
+ #undef HAVE_WINSOCK_H
+ #undef HAVE_WINSOCK2_H
+ #undef HAVE_WS2TCPIP_H
+#endif
+
+/* ---------------------------------------------------------------- */
+/* TYPEDEF REPLACEMENTS */
+/* ---------------------------------------------------------------- */
+
+/* Define this if in_addr_t is not an available 'typedefed' type */
+#define in_addr_t unsigned long
+
+/* Define as the return type of signal handlers (int or void). */
+#define RETSIGTYPE void
+
+/* Define ssize_t if it is not an available 'typedefed' type */
+#ifndef _SSIZE_T_DEFINED
+# if (defined(__WATCOMC__) && (__WATCOMC__ >= 1240)) || \
+ defined(__POCC__) || \
+ defined(__MINGW32__)
+# elif defined(_WIN64)
+# define _SSIZE_T_DEFINED
+# define ssize_t __int64
+# else
+# define _SSIZE_T_DEFINED
+# define ssize_t int
+# endif
+#endif
+
+/* ---------------------------------------------------------------- */
+/* TYPE SIZES */
+/* ---------------------------------------------------------------- */
+
+/* The size of `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of `short', as computed by sizeof. */
+#define SIZEOF_SHORT 2
+
+/* The size of `size_t', as computed by sizeof. */
+#if defined(_WIN64)
+# define SIZEOF_SIZE_T 8
+#else
+# define SIZEOF_SIZE_T 4
+#endif
+
+/* ---------------------------------------------------------------- */
+/* STRUCT RELATED */
+/* ---------------------------------------------------------------- */
+
+/* Define this if you have struct addrinfo */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define this if you have struct sockaddr_storage */
+#ifndef __SALFORDC__
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+#endif
+
+/* Define this if you have struct timeval */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* ---------------------------------------------------------------- */
+/* COMPILER SPECIFIC */
+/* ---------------------------------------------------------------- */
+
+/* Define to avoid VS2005 complaining about portable C functions */
+#if defined(_MSC_VER) && (_MSC_VER >= 1400)
+#define _CRT_SECURE_NO_DEPRECATE 1
+#define _CRT_NONSTDC_NO_DEPRECATE 1
+#endif
+
+/* Officially, Microsoft's Windows SDK versions 6.X do not support Windows
+ 2000 as a supported build target. VS2008 default installations provide an
+ embedded Windows SDK v6.0A along with the claim that Windows 2000 is a
+ valid build target for VS2008. Popular belief is that binaries built using
+ Windows SDK versions 6.X and Windows 2000 as a build target are functional */
+#if defined(_MSC_VER) && (_MSC_VER >= 1500)
+# define VS2008_MINIMUM_TARGET 0x0500
+#endif
+
+/* When no build target is specified VS2008 default build target is Windows
+ Vista, which leaves out even Winsows XP. If no build target has been given
+ for VS2008 we will target the minimum Officially supported build target,
+ which happens to be Windows XP. */
+#if defined(_MSC_VER) && (_MSC_VER >= 1500)
+# define VS2008_DEFAULT_TARGET 0x0501
+#endif
+
+/* VS2008 default target settings and minimum build target check */
+#if defined(_MSC_VER) && (_MSC_VER >= 1500)
+# ifndef _WIN32_WINNT
+# define _WIN32_WINNT VS2008_DEFAULT_TARGET
+# endif
+# ifndef WINVER
+# define WINVER VS2008_DEFAULT_TARGET
+# endif
+# if (_WIN32_WINNT < VS2008_MINIMUM_TARGET) || (WINVER < VS2008_MINIMUM_TARGET)
+# error VS2008 does not support Windows build targets prior to Windows 2000
+# endif
+#endif
+
+/* When no build target is specified Pelles C 5.00 and later default build
+ target is Windows Vista. We override default target to be Windows 2000. */
+#if defined(__POCC__) && (__POCC__ >= 500)
+# ifndef _WIN32_WINNT
+# define _WIN32_WINNT 0x0500
+# endif
+# ifndef WINVER
+# define WINVER 0x0500
+# endif
+#endif
+
+/* Availability of freeaddrinfo, getaddrinfo and getnameinfo functions is
+ quite convoluted, compiler dependent and even build target dependent. */
+#if defined(HAVE_WS2TCPIP_H)
+# if defined(__POCC__)
+# define HAVE_FREEADDRINFO 1
+# define HAVE_GETADDRINFO 1
+# define HAVE_GETNAMEINFO 1
+# elif defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0501)
+# define HAVE_FREEADDRINFO 1
+# define HAVE_GETADDRINFO 1
+# define HAVE_GETNAMEINFO 1
+# elif defined(_MSC_VER) && (_MSC_VER >= 1200)
+# define HAVE_FREEADDRINFO 1
+# define HAVE_GETADDRINFO 1
+# define HAVE_GETNAMEINFO 1
+# endif
+#endif
+
+#if defined(__POCC__)
+# ifndef _MSC_VER
+# error Microsoft extensions /Ze compiler option is required
+# endif
+# ifndef __POCC__OLDNAMES
+# error Compatibility names /Go compiler option is required
+# endif
+#endif
+
+/* ---------------------------------------------------------------- */
+/* IPV6 COMPATIBILITY */
+/* ---------------------------------------------------------------- */
+
+/* Define this if you have address family AF_INET6 */
+#ifdef HAVE_WINSOCK2_H
+#define HAVE_AF_INET6 1
+#endif
+
+/* Define this if you have protocol family PF_INET6 */
+#ifdef HAVE_WINSOCK2_H
+#define HAVE_PF_INET6 1
+#endif
+
+/* Define this if you have struct in6_addr */
+#ifdef HAVE_WS2TCPIP_H
+#define HAVE_STRUCT_IN6_ADDR 1
+#endif
+
+/* Define this if you have struct sockaddr_in6 */
+#ifdef HAVE_WS2TCPIP_H
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+#endif
+
+/* Define this if you have sockaddr_in6 with scopeid */
+#ifdef HAVE_WS2TCPIP_H
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+#endif
+
+
+#endif /* __ARES_CONFIG_WIN32_H */
--- /dev/null
+/* ares_config.h. Generated from ares_config.h.in by configure. */
+/* ares_config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define if building universal (internal helper macro) */
+/* #undef AC_APPLE_UNIVERSAL_BUILD */
+
+/* define this if ares is built for a big endian system */
+/* #undef ARES_BIG_ENDIAN */
+
+/* when building as static part of libcurl */
+/* #undef BUILDING_LIBCURL */
+
+/* when building c-ares library */
+/* #undef CARES_BUILDING_LIBRARY */
+
+/* when not building a shared library */
+/* #undef CARES_STATICLIB */
+
+/* Define to 1 to enable hiding of library internal symbols. */
+#define CARES_SYMBOL_HIDING 1
+
+/* Definition to make a library symbol externally visible. */
+#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((visibility ("default")))
+
+/* if a /etc/inet dir is being used */
+/* #undef ETC_INET */
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+#define GETNAMEINFO_QUAL_ARG1 const
+
+/* Define to the type of arg 1 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
+
+/* Define to the type of arg 2 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG2 socklen_t
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG46 int
+
+/* Define to the type of arg 7 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG7 int
+
+/* Specifies the number of arguments to getservbyport_r */
+/* #undef GETSERVBYPORT_R_ARGS */
+
+/* Specifies the size of the buffer to pass to getservbyport_r */
+/* #undef GETSERVBYPORT_R_BUFSIZE */
+
+/* Define to 1 if you have AF_INET6. */
+#define HAVE_AF_INET6 1
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#define HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+#define HAVE_ARPA_NAMESER_COMPAT_H 1
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+#define HAVE_ARPA_NAMESER_H 1
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the `bitncmp' function. */
+/* #undef HAVE_BITNCMP */
+
+/* Define to 1 if bool is an available type. */
+#define HAVE_BOOL_T 1
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+/* #undef HAVE_CLOCK_GETTIME_MONOTONIC */
+
+/* Define to 1 if you have the closesocket function. */
+/* #undef HAVE_CLOSESOCKET */
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+/* #undef HAVE_CLOSESOCKET_CAMEL */
+
+/* Define to 1 if you have the connect function. */
+#define HAVE_CONNECT 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the fcntl function. */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+#define HAVE_FCNTL_O_NONBLOCK 1
+
+/* Define to 1 if you have the freeaddrinfo function. */
+#define HAVE_FREEADDRINFO 1
+
+/* Define to 1 if you have a working getaddrinfo function. */
+#define HAVE_GETADDRINFO 1
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+/* #undef HAVE_GETADDRINFO_THREADSAFE */
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#define HAVE_GETHOSTBYADDR 1
+
+/* Define to 1 if you have the gethostbyname function. */
+#define HAVE_GETHOSTBYNAME 1
+
+/* Define to 1 if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define to 1 if you have the getnameinfo function. */
+#define HAVE_GETNAMEINFO 1
+
+/* Define to 1 if you have the getservbyport_r function. */
+/* #undef HAVE_GETSERVBYPORT_R */
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the `if_indextoname' function. */
+#define HAVE_IF_INDEXTONAME 1
+
+/* Define to 1 if you have the `inet_net_pton' function. */
+/* #undef HAVE_INET_NET_PTON */
+
+/* Define to 1 if inet_net_pton supports IPv6. */
+/* #undef HAVE_INET_NET_PTON_IPV6 */
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+#define HAVE_INET_NTOP 1
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+#define HAVE_INET_PTON 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the ioctl function. */
+#define HAVE_IOCTL 1
+
+/* Define to 1 if you have the ioctlsocket function. */
+/* #undef HAVE_IOCTLSOCKET */
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+/* #undef HAVE_IOCTLSOCKET_CAMEL */
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+ */
+/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+/* #undef HAVE_IOCTLSOCKET_FIONBIO */
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+#define HAVE_IOCTL_FIONBIO 1
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+#define HAVE_IOCTL_SIOCGIFADDR 1
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+/* #undef HAVE_LIBRESOLVE */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* if your compiler supports LL */
+#define HAVE_LL 1
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#define HAVE_LONGLONG 1
+
+/* Define to 1 if you have the malloc.h header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if you have the memory.h header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+#define HAVE_MSG_NOSIGNAL 1
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#define HAVE_NETDB_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#define HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+#define HAVE_NETINET_TCP_H 1
+
+/* Define to 1 if you have the <net/if.h> header file. */
+#define HAVE_NET_IF_H 1
+
+/* Define to 1 if you have PF_INET6. */
+#define HAVE_PF_INET6 1
+
+/* Define to 1 if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to 1 if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to 1 if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to 1 if you have the setsockopt function. */
+#define HAVE_SETSOCKOPT 1
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
+
+/* Define to 1 if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+/* Define to 1 if you have the socket function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <socket.h> header file. */
+/* #undef HAVE_SOCKET_H */
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the strcasecmp function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the stricmp function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the strncasecmp function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the strncmpi function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the strnicmp function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the <stropts.h> header file. */
+/* #undef HAVE_STROPTS_H */
+
+/* Define to 1 if you have struct addrinfo. */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define to 1 if you have struct in6_addr. */
+#define HAVE_STRUCT_IN6_ADDR 1
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+
+/* if struct sockaddr_storage is defined */
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+
+/* Define to 1 if you have the timeval struct. */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#define HAVE_SYS_IOCTL_H 1
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#define HAVE_SYS_UIO_H 1
+
+/* Define to 1 if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the windows.h header file. */
+/* #undef HAVE_WINDOWS_H */
+
+/* Define to 1 if you have the winsock2.h header file. */
+/* #undef HAVE_WINSOCK2_H */
+
+/* Define to 1 if you have the winsock.h header file. */
+/* #undef HAVE_WINSOCK_H */
+
+/* Define to 1 if you have the writev function. */
+#define HAVE_WRITEV 1
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+/* #undef HAVE_WS2TCPIP_H */
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Define to 1 if you are building a native Windows target. */
+/* #undef NATIVE_WINDOWS */
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+/* #undef NEED_MALLOC_H */
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+/* #undef NEED_MEMORY_H */
+
+/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
+/* #undef NEED_REENTRANT */
+
+/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
+/* #undef NEED_THREAD_SAFE */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* cpu-machine-OS */
+#define OS "i686-pc-cygwin"
+
+/* Name of package */
+#define PACKAGE "c-ares"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "c-ares"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "c-ares 1.7.1"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "c-ares"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "1.7.1"
+
+/* a suitable file/device to read random data from */
+#define RANDOM_FILE "/dev/urandom"
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 int
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 void
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+#define RECVFROM_TYPE_ARG2_IS_VOID 1
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 socklen_t
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG6_IS_VOID */
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV int
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV int
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV int
+
+/* The size of `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of `long', as computed by sizeof. */
+#define SIZEOF_LONG 4
+
+/* The size of `size_t', as computed by sizeof. */
+#define SIZEOF_SIZE_T 4
+
+/* The size of `struct in6_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN6_ADDR 16
+
+/* The size of `struct in_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN_ADDR 4
+
+/* The size of `time_t', as computed by sizeof. */
+#define SIZEOF_TIME_T 4
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to disable non-blocking sockets. */
+/* #undef USE_BLOCKING_SOCKETS */
+
+/* Version number of package */
+#define VERSION "1.7.1"
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+ significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+# define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+/* # undef WORDS_BIGENDIAN */
+# endif
+#endif
+
+/* Define to 1 if OS is AIX. */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+/* #undef in_addr_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* the signed version of size_t */
+/* #undef ssize_t */
--- /dev/null
+/* ares_config.h. Generated from ares_config.h.in by configure. */
+/* ares_config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define if building universal (internal helper macro) */
+/* #undef AC_APPLE_UNIVERSAL_BUILD */
+
+/* define this if ares is built for a big endian system */
+/* #undef ARES_BIG_ENDIAN */
+
+/* when building as static part of libcurl */
+/* #undef BUILDING_LIBCURL */
+
+/* when building c-ares library */
+/* #undef CARES_BUILDING_LIBRARY */
+
+/* when not building a shared library */
+/* #undef CARES_STATICLIB */
+
+/* Define to 1 to enable hiding of library internal symbols. */
+#define CARES_SYMBOL_HIDING 1
+
+/* Definition to make a library symbol externally visible. */
+#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((visibility ("default")))
+
+/* if a /etc/inet dir is being used */
+/* #undef ETC_INET */
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+#define GETNAMEINFO_QUAL_ARG1 const
+
+/* Define to the type of arg 1 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
+
+/* Define to the type of arg 2 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG2 socklen_t
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG46 socklen_t
+
+/* Define to the type of arg 7 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG7 int
+
+/* Specifies the number of arguments to getservbyport_r */
+/* #undef GETSERVBYPORT_R_ARGS */
+
+/* Specifies the size of the buffer to pass to getservbyport_r */
+/* #undef GETSERVBYPORT_R_BUFSIZE */
+
+/* Define to 1 if you have AF_INET6. */
+#define HAVE_AF_INET6 1
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#define HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+#define HAVE_ARPA_NAMESER_COMPAT_H 1
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+#define HAVE_ARPA_NAMESER_H 1
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the `bitncmp' function. */
+/* #undef HAVE_BITNCMP */
+
+/* Define to 1 if bool is an available type. */
+#define HAVE_BOOL_T 1
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+/* #undef HAVE_CLOCK_GETTIME_MONOTONIC */
+
+/* Define to 1 if you have the closesocket function. */
+/* #undef HAVE_CLOSESOCKET */
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+/* #undef HAVE_CLOSESOCKET_CAMEL */
+
+/* Define to 1 if you have the connect function. */
+#define HAVE_CONNECT 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the fcntl function. */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+#define HAVE_FCNTL_O_NONBLOCK 1
+
+/* Define to 1 if you have the freeaddrinfo function. */
+#define HAVE_FREEADDRINFO 1
+
+/* Define to 1 if you have a working getaddrinfo function. */
+#define HAVE_GETADDRINFO 1
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+#define HAVE_GETADDRINFO_THREADSAFE 1
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#define HAVE_GETHOSTBYADDR 1
+
+/* Define to 1 if you have the gethostbyname function. */
+#define HAVE_GETHOSTBYNAME 1
+
+/* Define to 1 if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define to 1 if you have the getnameinfo function. */
+#define HAVE_GETNAMEINFO 1
+
+/* Define to 1 if you have the getservbyport_r function. */
+/* #undef HAVE_GETSERVBYPORT_R */
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the `if_indextoname' function. */
+#define HAVE_IF_INDEXTONAME 1
+
+/* Define to 1 if you have the `inet_net_pton' function. */
+#define HAVE_INET_NET_PTON 1
+
+/* Define to 1 if inet_net_pton supports IPv6. */
+#define HAVE_INET_NET_PTON_IPV6 1
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+#define HAVE_INET_NTOP 1
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+#define HAVE_INET_PTON 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the ioctl function. */
+#define HAVE_IOCTL 1
+
+/* Define to 1 if you have the ioctlsocket function. */
+/* #undef HAVE_IOCTLSOCKET */
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+/* #undef HAVE_IOCTLSOCKET_CAMEL */
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+ */
+/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+/* #undef HAVE_IOCTLSOCKET_FIONBIO */
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+#define HAVE_IOCTL_FIONBIO 1
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+#define HAVE_IOCTL_SIOCGIFADDR 1
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+/* #undef HAVE_LIBRESOLVE */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* if your compiler supports LL */
+#define HAVE_LL 1
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#define HAVE_LONGLONG 1
+
+/* Define to 1 if you have the malloc.h header file. */
+/* #undef HAVE_MALLOC_H */
+
+/* Define to 1 if you have the memory.h header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+/* #undef HAVE_MSG_NOSIGNAL */
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#define HAVE_NETDB_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#define HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+#define HAVE_NETINET_TCP_H 1
+
+/* Define to 1 if you have the <net/if.h> header file. */
+#define HAVE_NET_IF_H 1
+
+/* Define to 1 if you have PF_INET6. */
+#define HAVE_PF_INET6 1
+
+/* Define to 1 if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to 1 if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to 1 if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to 1 if you have the setsockopt function. */
+#define HAVE_SETSOCKOPT 1
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
+
+/* Define to 1 if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+/* Define to 1 if you have the socket function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <socket.h> header file. */
+/* #undef HAVE_SOCKET_H */
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the strcasecmp function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the stricmp function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the strncasecmp function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the strncmpi function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the strnicmp function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the <stropts.h> header file. */
+/* #undef HAVE_STROPTS_H */
+
+/* Define to 1 if you have struct addrinfo. */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define to 1 if you have struct in6_addr. */
+#define HAVE_STRUCT_IN6_ADDR 1
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+
+/* if struct sockaddr_storage is defined */
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+
+/* Define to 1 if you have the timeval struct. */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#define HAVE_SYS_IOCTL_H 1
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#define HAVE_SYS_UIO_H 1
+
+/* Define to 1 if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the windows.h header file. */
+/* #undef HAVE_WINDOWS_H */
+
+/* Define to 1 if you have the winsock2.h header file. */
+/* #undef HAVE_WINSOCK2_H */
+
+/* Define to 1 if you have the winsock.h header file. */
+/* #undef HAVE_WINSOCK_H */
+
+/* Define to 1 if you have the writev function. */
+#define HAVE_WRITEV 1
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+/* #undef HAVE_WS2TCPIP_H */
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Define to 1 if you are building a native Windows target. */
+/* #undef NATIVE_WINDOWS */
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+/* #undef NEED_MALLOC_H */
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+/* #undef NEED_MEMORY_H */
+
+/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
+/* #undef NEED_REENTRANT */
+
+/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
+/* #undef NEED_THREAD_SAFE */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* cpu-machine-OS */
+#define OS "i386-apple-darwin9.8.0"
+
+/* Name of package */
+#define PACKAGE "c-ares"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "c-ares"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "c-ares 1.7.1"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "c-ares"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "1.7.1"
+
+/* a suitable file/device to read random data from */
+#define RANDOM_FILE "/dev/urandom"
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 int
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 void
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+#define RECVFROM_TYPE_ARG2_IS_VOID 1
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 socklen_t
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG6_IS_VOID */
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV ssize_t
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV ssize_t
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV ssize_t
+
+/* The size of `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of `long', as computed by sizeof. */
+#define SIZEOF_LONG 4
+
+/* The size of `size_t', as computed by sizeof. */
+#define SIZEOF_SIZE_T 4
+
+/* The size of `struct in6_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN6_ADDR 16
+
+/* The size of `struct in_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN_ADDR 4
+
+/* The size of `time_t', as computed by sizeof. */
+#define SIZEOF_TIME_T 4
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to disable non-blocking sockets. */
+/* #undef USE_BLOCKING_SOCKETS */
+
+/* Version number of package */
+#define VERSION "1.7.1"
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+ significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+# define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+/* # undef WORDS_BIGENDIAN */
+# endif
+#endif
+
+/* Define to 1 if OS is AIX. */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+/* #undef in_addr_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* the signed version of size_t */
+/* #undef ssize_t */
--- /dev/null
+/* ares_config.h. Generated from ares_config.h.in by configure. */
+/* ares_config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define if building universal (internal helper macro) */
+/* #undef AC_APPLE_UNIVERSAL_BUILD */
+
+/* define this if ares is built for a big endian system */
+/* #undef ARES_BIG_ENDIAN */
+
+/* when building as static part of libcurl */
+/* #undef BUILDING_LIBCURL */
+
+/* when building c-ares library */
+/* #undef CARES_BUILDING_LIBRARY */
+
+/* when not building a shared library */
+/* #undef CARES_STATICLIB */
+
+/* Define to 1 to enable hiding of library internal symbols. */
+#define CARES_SYMBOL_HIDING 1
+
+/* Definition to make a library symbol externally visible. */
+#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((visibility ("default")))
+
+/* if a /etc/inet dir is being used */
+/* #undef ETC_INET */
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+#define GETNAMEINFO_QUAL_ARG1 const
+
+/* Define to the type of arg 1 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
+
+/* Define to the type of arg 2 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG2 socklen_t
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG46 size_t
+
+/* Define to the type of arg 7 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG7 int
+
+/* Specifies the number of arguments to getservbyport_r */
+#define GETSERVBYPORT_R_ARGS 6
+
+/* Specifies the size of the buffer to pass to getservbyport_r */
+#define GETSERVBYPORT_R_BUFSIZE 4096
+
+/* Define to 1 if you have AF_INET6. */
+#define HAVE_AF_INET6 1
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#define HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+#define HAVE_ARPA_NAMESER_COMPAT_H 1
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+#define HAVE_ARPA_NAMESER_H 1
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the `bitncmp' function. */
+/* #undef HAVE_BITNCMP */
+
+/* Define to 1 if bool is an available type. */
+#define HAVE_BOOL_T 1
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+#define HAVE_CLOCK_GETTIME_MONOTONIC 1
+
+/* Define to 1 if you have the closesocket function. */
+/* #undef HAVE_CLOSESOCKET */
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+/* #undef HAVE_CLOSESOCKET_CAMEL */
+
+/* Define to 1 if you have the connect function. */
+#define HAVE_CONNECT 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the fcntl function. */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+#define HAVE_FCNTL_O_NONBLOCK 1
+
+/* Define to 1 if you have the freeaddrinfo function. */
+#define HAVE_FREEADDRINFO 1
+
+/* Define to 1 if you have a working getaddrinfo function. */
+#define HAVE_GETADDRINFO 1
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+#define HAVE_GETADDRINFO_THREADSAFE 1
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#define HAVE_GETHOSTBYADDR 1
+
+/* Define to 1 if you have the gethostbyname function. */
+#define HAVE_GETHOSTBYNAME 1
+
+/* Define to 1 if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define to 1 if you have the getnameinfo function. */
+#define HAVE_GETNAMEINFO 1
+
+/* Define to 1 if you have the getservbyport_r function. */
+#define HAVE_GETSERVBYPORT_R 1
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the `if_indextoname' function. */
+#define HAVE_IF_INDEXTONAME 1
+
+/* Define to 1 if you have the `inet_net_pton' function. */
+#define HAVE_INET_NET_PTON 1
+
+/* Define to 1 if inet_net_pton supports IPv6. */
+/* #undef HAVE_INET_NET_PTON_IPV6 */
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+#define HAVE_INET_NTOP 1
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+#define HAVE_INET_PTON 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the ioctl function. */
+#define HAVE_IOCTL 1
+
+/* Define to 1 if you have the ioctlsocket function. */
+/* #undef HAVE_IOCTLSOCKET */
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+/* #undef HAVE_IOCTLSOCKET_CAMEL */
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+ */
+/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+/* #undef HAVE_IOCTLSOCKET_FIONBIO */
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+#define HAVE_IOCTL_FIONBIO 1
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+#define HAVE_IOCTL_SIOCGIFADDR 1
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+/* #undef HAVE_LIBRESOLVE */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* if your compiler supports LL */
+#define HAVE_LL 1
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#define HAVE_LONGLONG 1
+
+/* Define to 1 if you have the malloc.h header file. */
+/* #undef HAVE_MALLOC_H */
+
+/* Define to 1 if you have the memory.h header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+#define HAVE_MSG_NOSIGNAL 1
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#define HAVE_NETDB_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#define HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+#define HAVE_NETINET_TCP_H 1
+
+/* Define to 1 if you have the <net/if.h> header file. */
+#define HAVE_NET_IF_H 1
+
+/* Define to 1 if you have PF_INET6. */
+#define HAVE_PF_INET6 1
+
+/* Define to 1 if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to 1 if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to 1 if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to 1 if you have the setsockopt function. */
+#define HAVE_SETSOCKOPT 1
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
+
+/* Define to 1 if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+/* Define to 1 if you have the socket function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <socket.h> header file. */
+/* #undef HAVE_SOCKET_H */
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the strcasecmp function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the stricmp function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the strncasecmp function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the strncmpi function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the strnicmp function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the <stropts.h> header file. */
+/* #undef HAVE_STROPTS_H */
+
+/* Define to 1 if you have struct addrinfo. */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define to 1 if you have struct in6_addr. */
+#define HAVE_STRUCT_IN6_ADDR 1
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+
+/* if struct sockaddr_storage is defined */
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+
+/* Define to 1 if you have the timeval struct. */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#define HAVE_SYS_IOCTL_H 1
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#define HAVE_SYS_UIO_H 1
+
+/* Define to 1 if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the windows.h header file. */
+/* #undef HAVE_WINDOWS_H */
+
+/* Define to 1 if you have the winsock2.h header file. */
+/* #undef HAVE_WINSOCK2_H */
+
+/* Define to 1 if you have the winsock.h header file. */
+/* #undef HAVE_WINSOCK_H */
+
+/* Define to 1 if you have the writev function. */
+#define HAVE_WRITEV 1
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+/* #undef HAVE_WS2TCPIP_H */
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Define to 1 if you are building a native Windows target. */
+/* #undef NATIVE_WINDOWS */
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+/* #undef NEED_MALLOC_H */
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+/* #undef NEED_MEMORY_H */
+
+/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
+/* #undef NEED_REENTRANT */
+
+/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
+/* #undef NEED_THREAD_SAFE */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* cpu-machine-OS */
+#define OS "i386-portbld-freebsd8.0"
+
+/* Name of package */
+#define PACKAGE "c-ares"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "c-ares"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "c-ares 1.7.1"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "c-ares"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "1.7.1"
+
+/* a suitable file/device to read random data from */
+#define RANDOM_FILE "/dev/urandom"
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 int
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 void
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+#define RECVFROM_TYPE_ARG2_IS_VOID 1
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 socklen_t
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG6_IS_VOID */
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV int
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV int
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV int
+
+/* The size of `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of `long', as computed by sizeof. */
+#define SIZEOF_LONG 4
+
+/* The size of `size_t', as computed by sizeof. */
+#define SIZEOF_SIZE_T 4
+
+/* The size of `struct in6_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN6_ADDR 16
+
+/* The size of `struct in_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN_ADDR 4
+
+/* The size of `time_t', as computed by sizeof. */
+#define SIZEOF_TIME_T 4
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to disable non-blocking sockets. */
+/* #undef USE_BLOCKING_SOCKETS */
+
+/* Version number of package */
+#define VERSION "1.7.1"
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+ significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+# define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+/* # undef WORDS_BIGENDIAN */
+# endif
+#endif
+
+/* Define to 1 if OS is AIX. */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+/* #undef in_addr_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* the signed version of size_t */
+/* #undef ssize_t */
--- /dev/null
+/* ares_config.h. Generated from ares_config.h.in by configure. */
+/* ares_config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define if building universal (internal helper macro) */
+/* #undef AC_APPLE_UNIVERSAL_BUILD */
+
+/* define this if ares is built for a big endian system */
+/* #undef ARES_BIG_ENDIAN */
+
+/* when building as static part of libcurl */
+/* #undef BUILDING_LIBCURL */
+
+/* when building c-ares library */
+/* #undef CARES_BUILDING_LIBRARY */
+
+/* when not building a shared library */
+/* #undef CARES_STATICLIB */
+
+/* Define to 1 to enable hiding of library internal symbols. */
+#define CARES_SYMBOL_HIDING 1
+
+/* Definition to make a library symbol externally visible. */
+#define CARES_SYMBOL_SCOPE_EXTERN __attribute__ ((visibility ("default")))
+
+/* if a /etc/inet dir is being used */
+/* #undef ETC_INET */
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+#define GETNAMEINFO_QUAL_ARG1 const
+
+/* Define to the type of arg 1 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
+
+/* Define to the type of arg 2 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG2 socklen_t
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG46 size_t
+
+/* Define to the type of arg 7 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG7 unsigned int
+
+/* Specifies the number of arguments to getservbyport_r */
+#define GETSERVBYPORT_R_ARGS 6
+
+/* Specifies the size of the buffer to pass to getservbyport_r */
+#define GETSERVBYPORT_R_BUFSIZE 4096
+
+/* Define to 1 if you have AF_INET6. */
+#define HAVE_AF_INET6 1
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#define HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+#define HAVE_ARPA_NAMESER_COMPAT_H 1
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+#define HAVE_ARPA_NAMESER_H 1
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the `bitncmp' function. */
+/* #undef HAVE_BITNCMP */
+
+/* Define to 1 if bool is an available type. */
+#define HAVE_BOOL_T 1
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+#define HAVE_CLOCK_GETTIME_MONOTONIC 1
+
+/* Define to 1 if you have the closesocket function. */
+/* #undef HAVE_CLOSESOCKET */
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+/* #undef HAVE_CLOSESOCKET_CAMEL */
+
+/* Define to 1 if you have the connect function. */
+#define HAVE_CONNECT 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the fcntl function. */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+#define HAVE_FCNTL_O_NONBLOCK 1
+
+/* Define to 1 if you have the freeaddrinfo function. */
+#define HAVE_FREEADDRINFO 1
+
+/* Define to 1 if you have a working getaddrinfo function. */
+#define HAVE_GETADDRINFO 1
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+#define HAVE_GETADDRINFO_THREADSAFE 1
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#define HAVE_GETHOSTBYADDR 1
+
+/* Define to 1 if you have the gethostbyname function. */
+#define HAVE_GETHOSTBYNAME 1
+
+/* Define to 1 if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define to 1 if you have the getnameinfo function. */
+#define HAVE_GETNAMEINFO 1
+
+/* Define to 1 if you have the getservbyport_r function. */
+#define HAVE_GETSERVBYPORT_R 1
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the `if_indextoname' function. */
+#define HAVE_IF_INDEXTONAME 1
+
+/* Define to 1 if you have the `inet_net_pton' function. */
+/* #undef HAVE_INET_NET_PTON */
+
+/* Define to 1 if inet_net_pton supports IPv6. */
+/* #undef HAVE_INET_NET_PTON_IPV6 */
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+#define HAVE_INET_NTOP 1
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+#define HAVE_INET_PTON 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the ioctl function. */
+#define HAVE_IOCTL 1
+
+/* Define to 1 if you have the ioctlsocket function. */
+/* #undef HAVE_IOCTLSOCKET */
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+/* #undef HAVE_IOCTLSOCKET_CAMEL */
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+ */
+/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+/* #undef HAVE_IOCTLSOCKET_FIONBIO */
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+#define HAVE_IOCTL_FIONBIO 1
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+#define HAVE_IOCTL_SIOCGIFADDR 1
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+/* #undef HAVE_LIBRESOLVE */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* if your compiler supports LL */
+#define HAVE_LL 1
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#define HAVE_LONGLONG 1
+
+/* Define to 1 if you have the malloc.h header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if you have the memory.h header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+#define HAVE_MSG_NOSIGNAL 1
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#define HAVE_NETDB_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#define HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+#define HAVE_NETINET_TCP_H 1
+
+/* Define to 1 if you have the <net/if.h> header file. */
+#define HAVE_NET_IF_H 1
+
+/* Define to 1 if you have PF_INET6. */
+#define HAVE_PF_INET6 1
+
+/* Define to 1 if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to 1 if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to 1 if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to 1 if you have the setsockopt function. */
+#define HAVE_SETSOCKOPT 1
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
+
+/* Define to 1 if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+/* Define to 1 if you have the socket function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <socket.h> header file. */
+/* #undef HAVE_SOCKET_H */
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the strcasecmp function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the stricmp function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the strncasecmp function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the strncmpi function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the strnicmp function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the <stropts.h> header file. */
+#define HAVE_STROPTS_H 1
+
+/* Define to 1 if you have struct addrinfo. */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define to 1 if you have struct in6_addr. */
+#define HAVE_STRUCT_IN6_ADDR 1
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+
+/* if struct sockaddr_storage is defined */
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+
+/* Define to 1 if you have the timeval struct. */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#define HAVE_SYS_IOCTL_H 1
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#define HAVE_SYS_UIO_H 1
+
+/* Define to 1 if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the windows.h header file. */
+/* #undef HAVE_WINDOWS_H */
+
+/* Define to 1 if you have the winsock2.h header file. */
+/* #undef HAVE_WINSOCK2_H */
+
+/* Define to 1 if you have the winsock.h header file. */
+/* #undef HAVE_WINSOCK_H */
+
+/* Define to 1 if you have the writev function. */
+#define HAVE_WRITEV 1
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+/* #undef HAVE_WS2TCPIP_H */
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Define to 1 if you are building a native Windows target. */
+/* #undef NATIVE_WINDOWS */
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+/* #undef NEED_MALLOC_H */
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+/* #undef NEED_MEMORY_H */
+
+/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
+/* #undef NEED_REENTRANT */
+
+/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
+/* #undef NEED_THREAD_SAFE */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* cpu-machine-OS */
+#define OS "i686-pc-linux-gnu"
+
+/* Name of package */
+#define PACKAGE "c-ares"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "c-ares"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "c-ares 1.7.1"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "c-ares"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "1.7.1"
+
+/* a suitable file/device to read random data from */
+#define RANDOM_FILE "/dev/urandom"
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 int
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 void
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+#define RECVFROM_TYPE_ARG2_IS_VOID 1
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 socklen_t
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG6_IS_VOID */
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV int
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV int
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV int
+
+/* The size of `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of `long', as computed by sizeof. */
+#define SIZEOF_LONG 4
+
+/* The size of `size_t', as computed by sizeof. */
+#define SIZEOF_SIZE_T 4
+
+/* The size of `struct in6_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN6_ADDR 16
+
+/* The size of `struct in_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN_ADDR 4
+
+/* The size of `time_t', as computed by sizeof. */
+#define SIZEOF_TIME_T 4
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to disable non-blocking sockets. */
+/* #undef USE_BLOCKING_SOCKETS */
+
+/* Version number of package */
+#define VERSION "1.7.1"
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+ significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+# define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+/* # undef WORDS_BIGENDIAN */
+# endif
+#endif
+
+/* Define to 1 if OS is AIX. */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#define _FILE_OFFSET_BITS 64
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+/* #undef in_addr_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* the signed version of size_t */
+/* #undef ssize_t */
--- /dev/null
+/* ares_config.h. Generated from ares_config.h.in by configure. */
+/* ares_config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define if building universal (internal helper macro) */
+/* #undef AC_APPLE_UNIVERSAL_BUILD */
+
+/* define this if ares is built for a big endian system */
+/* #undef ARES_BIG_ENDIAN */
+
+/* when building as static part of libcurl */
+/* #undef BUILDING_LIBCURL */
+
+/* when building c-ares library */
+/* #undef CARES_BUILDING_LIBRARY */
+
+/* when not building a shared library */
+/* #undef CARES_STATICLIB */
+
+/* Define to 1 to enable hiding of library internal symbols. */
+/* #undef CARES_SYMBOL_HIDING */
+
+/* Definition to make a library symbol externally visible. */
+/* #undef CARES_SYMBOL_SCOPE_EXTERN */
+
+/* if a /etc/inet dir is being used */
+/* #undef ETC_INET */
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+#define GETNAMEINFO_QUAL_ARG1 const
+
+/* Define to the type of arg 1 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
+
+/* Define to the type of arg 2 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG2 socklen_t
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG46 size_t
+
+/* Define to the type of arg 7 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG7 int
+
+/* Specifies the number of arguments to getservbyport_r */
+#define GETSERVBYPORT_R_ARGS 4
+
+/* Specifies the size of the buffer to pass to getservbyport_r */
+#define GETSERVBYPORT_R_BUFSIZE sizeof(struct servent_data)
+
+/* Define to 1 if you have AF_INET6. */
+#define HAVE_AF_INET6 1
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#define HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+/* #undef HAVE_ARPA_NAMESER_COMPAT_H */
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+#define HAVE_ARPA_NAMESER_H 1
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the `bitncmp' function. */
+/* #undef HAVE_BITNCMP */
+
+/* Define to 1 if bool is an available type. */
+#define HAVE_BOOL_T 1
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+#define HAVE_CLOCK_GETTIME_MONOTONIC 1
+
+/* Define to 1 if you have the closesocket function. */
+/* #undef HAVE_CLOSESOCKET */
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+/* #undef HAVE_CLOSESOCKET_CAMEL */
+
+/* Define to 1 if you have the connect function. */
+#define HAVE_CONNECT 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the fcntl function. */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+#define HAVE_FCNTL_O_NONBLOCK 1
+
+/* Define to 1 if you have the freeaddrinfo function. */
+#define HAVE_FREEADDRINFO 1
+
+/* Define to 1 if you have a working getaddrinfo function. */
+#define HAVE_GETADDRINFO 1
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+/* #undef HAVE_GETADDRINFO_THREADSAFE */
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#define HAVE_GETHOSTBYADDR 1
+
+/* Define to 1 if you have the gethostbyname function. */
+#define HAVE_GETHOSTBYNAME 1
+
+/* Define to 1 if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define to 1 if you have the getnameinfo function. */
+#define HAVE_GETNAMEINFO 1
+
+/* Define to 1 if you have the getservbyport_r function. */
+#define HAVE_GETSERVBYPORT_R 1
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the `if_indextoname' function. */
+#define HAVE_IF_INDEXTONAME 1
+
+/* Define to 1 if you have the `inet_net_pton' function. */
+#define HAVE_INET_NET_PTON 1
+
+/* Define to 1 if inet_net_pton supports IPv6. */
+/* #undef HAVE_INET_NET_PTON_IPV6 */
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+#define HAVE_INET_NTOP 1
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+#define HAVE_INET_PTON 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the ioctl function. */
+#define HAVE_IOCTL 1
+
+/* Define to 1 if you have the ioctlsocket function. */
+/* #undef HAVE_IOCTLSOCKET */
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+/* #undef HAVE_IOCTLSOCKET_CAMEL */
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+ */
+/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+/* #undef HAVE_IOCTLSOCKET_FIONBIO */
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+#define HAVE_IOCTL_FIONBIO 1
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+#define HAVE_IOCTL_SIOCGIFADDR 1
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+/* #undef HAVE_LIBRESOLVE */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* if your compiler supports LL */
+#define HAVE_LL 1
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#define HAVE_LONGLONG 1
+
+/* Define to 1 if you have the malloc.h header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if you have the memory.h header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+/* #undef HAVE_MSG_NOSIGNAL */
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#define HAVE_NETDB_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#define HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+#define HAVE_NETINET_TCP_H 1
+
+/* Define to 1 if you have the <net/if.h> header file. */
+#define HAVE_NET_IF_H 1
+
+/* Define to 1 if you have PF_INET6. */
+#define HAVE_PF_INET6 1
+
+/* Define to 1 if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to 1 if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to 1 if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to 1 if you have the setsockopt function. */
+#define HAVE_SETSOCKOPT 1
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
+
+/* Define to 1 if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+/* Define to 1 if you have the socket function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <socket.h> header file. */
+/* #undef HAVE_SOCKET_H */
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the strcasecmp function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the stricmp function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the strncasecmp function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the strncmpi function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the strnicmp function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the <stropts.h> header file. */
+/* #undef HAVE_STROPTS_H */
+
+/* Define to 1 if you have struct addrinfo. */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define to 1 if you have struct in6_addr. */
+#define HAVE_STRUCT_IN6_ADDR 1
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+
+/* if struct sockaddr_storage is defined */
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+
+/* Define to 1 if you have the timeval struct. */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#define HAVE_SYS_IOCTL_H 1
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#define HAVE_SYS_UIO_H 1
+
+/* Define to 1 if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the windows.h header file. */
+/* #undef HAVE_WINDOWS_H */
+
+/* Define to 1 if you have the winsock2.h header file. */
+/* #undef HAVE_WINSOCK2_H */
+
+/* Define to 1 if you have the winsock.h header file. */
+/* #undef HAVE_WINSOCK_H */
+
+/* Define to 1 if you have the writev function. */
+#define HAVE_WRITEV 1
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+/* #undef HAVE_WS2TCPIP_H */
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Define to 1 if you are building a native Windows target. */
+/* #undef NATIVE_WINDOWS */
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+/* #undef NEED_MALLOC_H */
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+/* #undef NEED_MEMORY_H */
+
+/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
+/* #undef NEED_REENTRANT */
+
+/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
+/* #undef NEED_THREAD_SAFE */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* cpu-machine-OS */
+#define OS "i386-unknown-openbsd4.7"
+
+/* Name of package */
+#define PACKAGE "c-ares"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "c-ares"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "c-ares 1.7.1"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "c-ares"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "1.7.1"
+
+/* a suitable file/device to read random data from */
+#define RANDOM_FILE "/dev/urandom"
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 int
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 void
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+#define RECVFROM_TYPE_ARG2_IS_VOID 1
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 socklen_t
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG6_IS_VOID */
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV int
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV int
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV int
+
+/* The size of `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of `long', as computed by sizeof. */
+#define SIZEOF_LONG 4
+
+/* The size of `size_t', as computed by sizeof. */
+#define SIZEOF_SIZE_T 4
+
+/* The size of `struct in6_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN6_ADDR 16
+
+/* The size of `struct in_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN_ADDR 4
+
+/* The size of `time_t', as computed by sizeof. */
+#define SIZEOF_TIME_T 4
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to disable non-blocking sockets. */
+/* #undef USE_BLOCKING_SOCKETS */
+
+/* Version number of package */
+#define VERSION "1.7.1"
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+ significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+# define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+/* # undef WORDS_BIGENDIAN */
+# endif
+#endif
+
+/* Define to 1 if OS is AIX. */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+/* #undef in_addr_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* the signed version of size_t */
+/* #undef ssize_t */
--- /dev/null
+/* ares_config.h. Generated from ares_config.h.in by configure. */
+/* ares_config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define if building universal (internal helper macro) */
+/* #undef AC_APPLE_UNIVERSAL_BUILD */
+
+/* define this if ares is built for a big endian system */
+/* #undef ARES_BIG_ENDIAN */
+
+/* when building as static part of libcurl */
+/* #undef BUILDING_LIBCURL */
+
+/* when building c-ares library */
+/* #undef CARES_BUILDING_LIBRARY */
+
+/* when not building a shared library */
+/* #undef CARES_STATICLIB */
+
+/* Define to 1 to enable hiding of library internal symbols. */
+/* #undef CARES_SYMBOL_HIDING */
+
+/* Definition to make a library symbol externally visible. */
+/* #undef CARES_SYMBOL_SCOPE_EXTERN */
+
+/* if a /etc/inet dir is being used */
+#define ETC_INET 1
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+#define GETNAMEINFO_QUAL_ARG1 const
+
+/* Define to the type of arg 1 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG1 struct sockaddr *
+
+/* Define to the type of arg 2 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG2 socklen_t
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG46 size_t
+
+/* Define to the type of arg 7 for getnameinfo. */
+#define GETNAMEINFO_TYPE_ARG7 int
+
+/* Specifies the number of arguments to getservbyport_r */
+#define GETSERVBYPORT_R_ARGS 5
+
+/* Specifies the size of the buffer to pass to getservbyport_r */
+#define GETSERVBYPORT_R_BUFSIZE 4096
+
+/* Define to 1 if you have AF_INET6. */
+#define HAVE_AF_INET6 1
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+#define HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+#define HAVE_ARPA_NAMESER_COMPAT_H 1
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+#define HAVE_ARPA_NAMESER_H 1
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the `bitncmp' function. */
+/* #undef HAVE_BITNCMP */
+
+/* Define to 1 if bool is an available type. */
+#define HAVE_BOOL_T 1
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+#define HAVE_CLOCK_GETTIME_MONOTONIC 1
+
+/* Define to 1 if you have the closesocket function. */
+/* #undef HAVE_CLOSESOCKET */
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+/* #undef HAVE_CLOSESOCKET_CAMEL */
+
+/* Define to 1 if you have the connect function. */
+#define HAVE_CONNECT 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the fcntl function. */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+#define HAVE_FCNTL_O_NONBLOCK 1
+
+/* Define to 1 if you have the freeaddrinfo function. */
+#define HAVE_FREEADDRINFO 1
+
+/* Define to 1 if you have a working getaddrinfo function. */
+#define HAVE_GETADDRINFO 1
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+#define HAVE_GETADDRINFO_THREADSAFE 1
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#define HAVE_GETHOSTBYADDR 1
+
+/* Define to 1 if you have the gethostbyname function. */
+#define HAVE_GETHOSTBYNAME 1
+
+/* Define to 1 if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define to 1 if you have the getnameinfo function. */
+#define HAVE_GETNAMEINFO 1
+
+/* Define to 1 if you have the getservbyport_r function. */
+#define HAVE_GETSERVBYPORT_R 1
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the `if_indextoname' function. */
+#define HAVE_IF_INDEXTONAME 1
+
+/* Define to 1 if you have the `inet_net_pton' function. */
+/* #undef HAVE_INET_NET_PTON */
+
+/* Define to 1 if inet_net_pton supports IPv6. */
+/* #undef HAVE_INET_NET_PTON_IPV6 */
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+#define HAVE_INET_NTOP 1
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+#define HAVE_INET_PTON 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the ioctl function. */
+#define HAVE_IOCTL 1
+
+/* Define to 1 if you have the ioctlsocket function. */
+/* #undef HAVE_IOCTLSOCKET */
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+/* #undef HAVE_IOCTLSOCKET_CAMEL */
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+ */
+/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+/* #undef HAVE_IOCTLSOCKET_FIONBIO */
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+/* #undef HAVE_IOCTL_FIONBIO */
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+/* #undef HAVE_IOCTL_SIOCGIFADDR */
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+/* #undef HAVE_LIBRESOLVE */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* if your compiler supports LL */
+#define HAVE_LL 1
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#define HAVE_LONGLONG 1
+
+/* Define to 1 if you have the malloc.h header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if you have the memory.h header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+/* #undef HAVE_MSG_NOSIGNAL */
+
+/* Define to 1 if you have the <netdb.h> header file. */
+#define HAVE_NETDB_H 1
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+#define HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+#define HAVE_NETINET_TCP_H 1
+
+/* Define to 1 if you have the <net/if.h> header file. */
+#define HAVE_NET_IF_H 1
+
+/* Define to 1 if you have PF_INET6. */
+#define HAVE_PF_INET6 1
+
+/* Define to 1 if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to 1 if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to 1 if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to 1 if you have the setsockopt function. */
+#define HAVE_SETSOCKOPT 1
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
+
+/* Define to 1 if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+/* Define to 1 if you have the socket function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <socket.h> header file. */
+/* #undef HAVE_SOCKET_H */
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the strcasecmp function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function. */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the stricmp function. */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the strncasecmp function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the strncmpi function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the strnicmp function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the <stropts.h> header file. */
+#define HAVE_STROPTS_H 1
+
+/* Define to 1 if you have struct addrinfo. */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define to 1 if you have struct in6_addr. */
+#define HAVE_STRUCT_IN6_ADDR 1
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+
+/* if struct sockaddr_storage is defined */
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+
+/* Define to 1 if you have the timeval struct. */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+#define HAVE_SYS_IOCTL_H 1
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+#define HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+#define HAVE_SYS_UIO_H 1
+
+/* Define to 1 if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the windows.h header file. */
+/* #undef HAVE_WINDOWS_H */
+
+/* Define to 1 if you have the winsock2.h header file. */
+/* #undef HAVE_WINSOCK2_H */
+
+/* Define to 1 if you have the winsock.h header file. */
+/* #undef HAVE_WINSOCK_H */
+
+/* Define to 1 if you have the writev function. */
+#define HAVE_WRITEV 1
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+/* #undef HAVE_WS2TCPIP_H */
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Define to 1 if you are building a native Windows target. */
+/* #undef NATIVE_WINDOWS */
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+/* #undef NEED_MALLOC_H */
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+/* #undef NEED_MEMORY_H */
+
+/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
+#define NEED_REENTRANT 1
+
+/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
+/* #undef NEED_THREAD_SAFE */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* cpu-machine-OS */
+#define OS "i386-pc-solaris2.11"
+
+/* Name of package */
+#define PACKAGE "c-ares"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "c-ares"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "c-ares 1.7.1"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "c-ares"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "1.7.1"
+
+/* a suitable file/device to read random data from */
+#define RANDOM_FILE "/dev/urandom"
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 int
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 void
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+#define RECVFROM_TYPE_ARG2_IS_VOID 1
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 void
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+#define RECVFROM_TYPE_ARG6_IS_VOID 1
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV int
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV int
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 int
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 void *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 size_t
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV int
+
+/* The size of `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of `long', as computed by sizeof. */
+#define SIZEOF_LONG 4
+
+/* The size of `size_t', as computed by sizeof. */
+#define SIZEOF_SIZE_T 4
+
+/* The size of `struct in6_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN6_ADDR 16
+
+/* The size of `struct in_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN_ADDR 4
+
+/* The size of `time_t', as computed by sizeof. */
+#define SIZEOF_TIME_T 4
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to disable non-blocking sockets. */
+/* #undef USE_BLOCKING_SOCKETS */
+
+/* Version number of package */
+#define VERSION "1.7.1"
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+ significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+# define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+/* # undef WORDS_BIGENDIAN */
+# endif
+#endif
+
+/* Define to 1 if OS is AIX. */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#define _FILE_OFFSET_BITS 64
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+/* #undef in_addr_t */
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* the signed version of size_t */
+/* #undef ssize_t */
--- /dev/null
+/* ares_config.h. Generated from ares_config.h.in by configure. */
+/* ares_config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define if building universal (internal helper macro) */
+/* #undef AC_APPLE_UNIVERSAL_BUILD */
+
+/* define this if ares is built for a big endian system */
+/* #undef ARES_BIG_ENDIAN */
+
+/* when building as static part of libcurl */
+/* #undef BUILDING_LIBCURL */
+
+/* when building c-ares library */
+/* #undef CARES_BUILDING_LIBRARY */
+
+/* when not building a shared library */
+#define CARES_STATICLIB 1
+
+/* Define to 1 to enable hiding of library internal symbols. */
+/* #undef CARES_SYMBOL_HIDING */
+
+/* Definition to make a library symbol externally visible. */
+/* #undef CARES_SYMBOL_SCOPE_EXTERN */
+
+/* if a /etc/inet dir is being used */
+/* #undef ETC_INET */
+
+/* Define to the type qualifier of arg 1 for getnameinfo. */
+/* #undef GETNAMEINFO_QUAL_ARG1 */
+
+/* Define to the type of arg 1 for getnameinfo. */
+/* #undef GETNAMEINFO_TYPE_ARG1 */
+
+/* Define to the type of arg 2 for getnameinfo. */
+/* #undef GETNAMEINFO_TYPE_ARG2 */
+
+/* Define to the type of args 4 and 6 for getnameinfo. */
+/* #undef GETNAMEINFO_TYPE_ARG46 */
+
+/* Define to the type of arg 7 for getnameinfo. */
+/* #undef GETNAMEINFO_TYPE_ARG7 */
+
+/* Specifies the number of arguments to getservbyport_r */
+/* #undef GETSERVBYPORT_R_ARGS */
+
+/* Specifies the size of the buffer to pass to getservbyport_r */
+/* #undef GETSERVBYPORT_R_BUFSIZE */
+
+/* Define to 1 if you have AF_INET6. */
+#define HAVE_AF_INET6 1
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+/* #undef HAVE_ARPA_INET_H */
+
+/* Define to 1 if you have the <arpa/nameser_compat.h> header file. */
+/* #undef HAVE_ARPA_NAMESER_COMPAT_H */
+
+/* Define to 1 if you have the <arpa/nameser.h> header file. */
+/* #undef HAVE_ARPA_NAMESER_H */
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the `bitncmp' function. */
+/* #undef HAVE_BITNCMP */
+
+/* Define to 1 if bool is an available type. */
+#define HAVE_BOOL_T 1
+
+/* Define to 1 if you have the clock_gettime function and monotonic timer. */
+/* #undef HAVE_CLOCK_GETTIME_MONOTONIC */
+
+/* Define to 1 if you have the closesocket function. */
+#define HAVE_CLOSESOCKET 1
+
+/* Define to 1 if you have the CloseSocket camel case function. */
+/* #undef HAVE_CLOSESOCKET_CAMEL */
+
+/* Define to 1 if you have the connect function. */
+#define HAVE_CONNECT 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+/* #undef HAVE_DLFCN_H */
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the fcntl function. */
+/* #undef HAVE_FCNTL */
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
+/* #undef HAVE_FCNTL_O_NONBLOCK */
+
+/* Define to 1 if you have the freeaddrinfo function. */
+/* #undef HAVE_FREEADDRINFO */
+
+/* Define to 1 if you have a working getaddrinfo function. */
+/* #undef HAVE_GETADDRINFO */
+
+/* Define to 1 if the getaddrinfo function is threadsafe. */
+/* #undef HAVE_GETADDRINFO_THREADSAFE */
+
+/* Define to 1 if you have the gethostbyaddr function. */
+#define HAVE_GETHOSTBYADDR 1
+
+/* Define to 1 if you have the gethostbyname function. */
+#define HAVE_GETHOSTBYNAME 1
+
+/* Define to 1 if you have the gethostname function. */
+#define HAVE_GETHOSTNAME 1
+
+/* Define to 1 if you have the getnameinfo function. */
+/* #undef HAVE_GETNAMEINFO */
+
+/* Define to 1 if you have the getservbyport_r function. */
+/* #undef HAVE_GETSERVBYPORT_R */
+
+/* Define to 1 if you have the `gettimeofday' function. */
+#define HAVE_GETTIMEOFDAY 1
+
+/* Define to 1 if you have the `if_indextoname' function. */
+/* #undef HAVE_IF_INDEXTONAME */
+
+/* Define to 1 if you have the `inet_net_pton' function. */
+/* #undef HAVE_INET_NET_PTON */
+
+/* Define to 1 if inet_net_pton supports IPv6. */
+/* #undef HAVE_INET_NET_PTON_IPV6 */
+
+/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
+/* #undef HAVE_INET_NTOP */
+
+/* Define to 1 if you have a IPv6 capable working inet_pton function. */
+/* #undef HAVE_INET_PTON */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the ioctl function. */
+/* #undef HAVE_IOCTL */
+
+/* Define to 1 if you have the ioctlsocket function. */
+#define HAVE_IOCTLSOCKET 1
+
+/* Define to 1 if you have the IoctlSocket camel case function. */
+/* #undef HAVE_IOCTLSOCKET_CAMEL */
+
+/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
+ */
+/* #undef HAVE_IOCTLSOCKET_CAMEL_FIONBIO */
+
+/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
+#define HAVE_IOCTLSOCKET_FIONBIO 1
+
+/* Define to 1 if you have a working ioctl FIONBIO function. */
+/* #undef HAVE_IOCTL_FIONBIO */
+
+/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
+/* #undef HAVE_IOCTL_SIOCGIFADDR */
+
+/* Define to 1 if you have the `resolve' library (-lresolve). */
+/* #undef HAVE_LIBRESOLVE */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* if your compiler supports LL */
+#define HAVE_LL 1
+
+/* Define to 1 if the compiler supports the 'long long' data type. */
+#define HAVE_LONGLONG 1
+
+/* Define to 1 if you have the malloc.h header file. */
+#define HAVE_MALLOC_H 1
+
+/* Define to 1 if you have the memory.h header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the MSG_NOSIGNAL flag. */
+/* #undef HAVE_MSG_NOSIGNAL */
+
+/* Define to 1 if you have the <netdb.h> header file. */
+/* #undef HAVE_NETDB_H */
+
+/* Define to 1 if you have the <netinet/in.h> header file. */
+/* #undef HAVE_NETINET_IN_H */
+
+/* Define to 1 if you have the <netinet/tcp.h> header file. */
+/* #undef HAVE_NETINET_TCP_H */
+
+/* Define to 1 if you have the <net/if.h> header file. */
+/* #undef HAVE_NET_IF_H */
+
+/* Define to 1 if you have PF_INET6. */
+#define HAVE_PF_INET6 1
+
+/* Define to 1 if you have the recv function. */
+#define HAVE_RECV 1
+
+/* Define to 1 if you have the recvfrom function. */
+#define HAVE_RECVFROM 1
+
+/* Define to 1 if you have the send function. */
+#define HAVE_SEND 1
+
+/* Define to 1 if you have the setsockopt function. */
+#define HAVE_SETSOCKOPT 1
+
+/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
+/* #undef HAVE_SETSOCKOPT_SO_NONBLOCK */
+
+/* Define to 1 if you have the <signal.h> header file. */
+#define HAVE_SIGNAL_H 1
+
+/* Define to 1 if sig_atomic_t is an available typedef. */
+#define HAVE_SIG_ATOMIC_T 1
+
+/* Define to 1 if sig_atomic_t is already defined as volatile. */
+/* #undef HAVE_SIG_ATOMIC_T_VOLATILE */
+
+/* Define to 1 if your struct sockaddr_in6 has sin6_scope_id. */
+#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
+
+/* Define to 1 if you have the socket function. */
+#define HAVE_SOCKET 1
+
+/* Define to 1 if you have the <socket.h> header file. */
+/* #undef HAVE_SOCKET_H */
+
+/* Define to 1 if you have the <stdbool.h> header file. */
+#define HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the strcasecmp function. */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function. */
+#define HAVE_STRCMPI 1
+
+/* Define to 1 if you have the strdup function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the stricmp function. */
+#define HAVE_STRICMP 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the strncasecmp function. */
+#define HAVE_STRNCASECMP 1
+
+/* Define to 1 if you have the strncmpi function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the strnicmp function. */
+/* #undef HAVE_STRNICMP */
+
+/* Define to 1 if you have the <stropts.h> header file. */
+/* #undef HAVE_STROPTS_H */
+
+/* Define to 1 if you have struct addrinfo. */
+#define HAVE_STRUCT_ADDRINFO 1
+
+/* Define to 1 if you have struct in6_addr. */
+#define HAVE_STRUCT_IN6_ADDR 1
+
+/* Define to 1 if you have struct sockaddr_in6. */
+#define HAVE_STRUCT_SOCKADDR_IN6 1
+
+/* if struct sockaddr_storage is defined */
+#define HAVE_STRUCT_SOCKADDR_STORAGE 1
+
+/* Define to 1 if you have the timeval struct. */
+#define HAVE_STRUCT_TIMEVAL 1
+
+/* Define to 1 if you have the <sys/ioctl.h> header file. */
+/* #undef HAVE_SYS_IOCTL_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#define HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+/* #undef HAVE_SYS_SELECT_H */
+
+/* Define to 1 if you have the <sys/socket.h> header file. */
+/* #undef HAVE_SYS_SOCKET_H */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#define HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/uio.h> header file. */
+/* #undef HAVE_SYS_UIO_H */
+
+/* Define to 1 if you have the <time.h> header file. */
+#define HAVE_TIME_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the windows.h header file. */
+#define HAVE_WINDOWS_H 1
+
+/* Define to 1 if you have the winsock2.h header file. */
+#define HAVE_WINSOCK2_H 1
+
+/* Define to 1 if you have the winsock.h header file. */
+#define HAVE_WINSOCK_H 1
+
+/* Define to 1 if you have the writev function. */
+/* #undef HAVE_WRITEV */
+
+/* Define to 1 if you have the ws2tcpip.h header file. */
+#define HAVE_WS2TCPIP_H 1
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Define to 1 if you are building a native Windows target. */
+#define NATIVE_WINDOWS 1
+
+/* Define to 1 if you need the malloc.h header file even with stdlib.h */
+/* #undef NEED_MALLOC_H */
+
+/* Define to 1 if you need the memory.h header file even with stdlib.h */
+/* #undef NEED_MEMORY_H */
+
+/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
+/* #undef NEED_REENTRANT */
+
+/* Define to 1 if _THREAD_SAFE preprocessor symbol must be defined. */
+/* #undef NEED_THREAD_SAFE */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* cpu-machine-OS */
+#define OS "i686-pc-mingw32"
+
+/* Name of package */
+#define PACKAGE "c-ares"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "c-ares"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "c-ares 1.7.3"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "c-ares"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "1.7.3"
+
+/* a suitable file/device to read random data from */
+#define RANDOM_FILE "/dev/urandom"
+
+/* Define to the type of arg 1 for recvfrom. */
+#define RECVFROM_TYPE_ARG1 SOCKET
+
+/* Define to the type pointed by arg 2 for recvfrom. */
+#define RECVFROM_TYPE_ARG2 char
+
+/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG2_IS_VOID */
+
+/* Define to the type of arg 3 for recvfrom. */
+#define RECVFROM_TYPE_ARG3 int
+
+/* Define to the type of arg 4 for recvfrom. */
+#define RECVFROM_TYPE_ARG4 int
+
+/* Define to the type pointed by arg 5 for recvfrom. */
+#define RECVFROM_TYPE_ARG5 struct sockaddr
+
+/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG5_IS_VOID */
+
+/* Define to the type pointed by arg 6 for recvfrom. */
+#define RECVFROM_TYPE_ARG6 int
+
+/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
+/* #undef RECVFROM_TYPE_ARG6_IS_VOID */
+
+/* Define to the function return type for recvfrom. */
+#define RECVFROM_TYPE_RETV int
+
+/* Define to the type of arg 1 for recv. */
+#define RECV_TYPE_ARG1 SOCKET
+
+/* Define to the type of arg 2 for recv. */
+#define RECV_TYPE_ARG2 char *
+
+/* Define to the type of arg 3 for recv. */
+#define RECV_TYPE_ARG3 int
+
+/* Define to the type of arg 4 for recv. */
+#define RECV_TYPE_ARG4 int
+
+/* Define to the function return type for recv. */
+#define RECV_TYPE_RETV int
+
+/* Define as the return type of signal handlers (`int' or `void'). */
+#define RETSIGTYPE void
+
+/* Define to the type qualifier of arg 2 for send. */
+#define SEND_QUAL_ARG2 const
+
+/* Define to the type of arg 1 for send. */
+#define SEND_TYPE_ARG1 SOCKET
+
+/* Define to the type of arg 2 for send. */
+#define SEND_TYPE_ARG2 char *
+
+/* Define to the type of arg 3 for send. */
+#define SEND_TYPE_ARG3 int
+
+/* Define to the type of arg 4 for send. */
+#define SEND_TYPE_ARG4 int
+
+/* Define to the function return type for send. */
+#define SEND_TYPE_RETV int
+
+/* The size of `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of `long', as computed by sizeof. */
+#define SIZEOF_LONG 4
+
+/* The size of `size_t', as computed by sizeof. */
+#define SIZEOF_SIZE_T 4
+
+/* The size of `struct in6_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN6_ADDR 16
+
+/* The size of `struct in_addr', as computed by sizeof. */
+#define SIZEOF_STRUCT_IN_ADDR 4
+
+/* The size of `time_t', as computed by sizeof. */
+#define SIZEOF_TIME_T 4
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#define TIME_WITH_SYS_TIME 1
+
+/* Define to disable non-blocking sockets. */
+/* #undef USE_BLOCKING_SOCKETS */
+
+/* Version number of package */
+#define VERSION "1.7.3"
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+ significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+# define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+/* # undef WORDS_BIGENDIAN */
+# endif
+#endif
+
+/* Define to 1 if OS is AIX. */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Type to use in place of in_addr_t when system does not provide it. */
+#define in_addr_t unsigned long
+
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+/* #undef size_t */
+
+/* the signed version of size_t */
+/* #undef ssize_t */
--- /dev/null
+# ***************************************************************************
+# * Project: c-ares
+# *
+# ***************************************************************************
+# awk script which fetches c-ares version number and string from input
+# file and writes them to STDOUT. Here you can get an awk version for Win32:
+# http://www.gknw.net/development/prgtools/awk-20070501.zip
+#
+BEGIN {
+ if (match (ARGV[1], /ares_version.h/)) {
+ while ((getline < ARGV[1]) > 0) {
+ if (match ($0, /^#define ARES_COPYRIGHT "[^"]+"$/)) {
+ libcares_copyright_str = substr($0, 25, length($0)-25);
+ }
+ else if (match ($0, /^#define ARES_VERSION_STR "[^"]+"$/)) {
+ libcares_ver_str = substr($3, 2, length($3)-2);
+ }
+ else if (match ($0, /^#define ARES_VERSION_MAJOR [0-9]+$/)) {
+ libcares_ver_major = substr($3, 1, length($3));
+ }
+ else if (match ($0, /^#define ARES_VERSION_MINOR [0-9]+$/)) {
+ libcares_ver_minor = substr($3, 1, length($3));
+ }
+ else if (match ($0, /^#define ARES_VERSION_PATCH [0-9]+$/)) {
+ libcares_ver_patch = substr($3, 1, length($3));
+ }
+ }
+ libcares_ver = libcares_ver_major "," libcares_ver_minor "," libcares_ver_patch;
+ print "LIBCARES_VERSION = " libcares_ver "";
+ print "LIBCARES_VERSION_STR = " libcares_ver_str "";
+ print "LIBCARES_COPYRIGHT_STR = " libcares_copyright_str "";
+ }
+}
+
+
--- /dev/null
+
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1996,1999 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "ares.h"
+#include "ares_ipv6.h"
+#include "inet_net_pton.h"
+
+
+const struct ares_in6_addr ares_in6addr_any = { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } };
+
+
+#if !defined(HAVE_INET_NET_PTON) || !defined(HAVE_INET_NET_PTON_IPV6)
+
+/*
+ * static int
+ * inet_net_pton_ipv4(src, dst, size)
+ * convert IPv4 network number from presentation to network format.
+ * accepts hex octets, hex strings, decimal octets, and /CIDR.
+ * "size" is in bytes and describes "dst".
+ * return:
+ * number of bits, either imputed classfully or specified with /CIDR,
+ * or -1 if some failure occurred (check errno). ENOENT means it was
+ * not an IPv4 network specification.
+ * note:
+ * network byte order assumed. this means 192.5.5.240/28 has
+ * 0b11110000 in its fourth octet.
+ * note:
+ * On Windows we store the error in the thread errno, not
+ * in the winsock error code. This is to avoid loosing the
+ * actual last winsock error. So use macro ERRNO to fetch the
+ * errno this funtion sets when returning (-1), not SOCKERRNO.
+ * author:
+ * Paul Vixie (ISC), June 1996
+ */
+static int
+inet_net_pton_ipv4(const char *src, unsigned char *dst, size_t size)
+{
+ static const char xdigits[] = "0123456789abcdef";
+ static const char digits[] = "0123456789";
+ int n, ch, tmp = 0, dirty, bits;
+ const unsigned char *odst = dst;
+
+ ch = *src++;
+ if (ch == '0' && (src[0] == 'x' || src[0] == 'X')
+ && ISXDIGIT(src[1])) {
+ /* Hexadecimal: Eat nybble string. */
+ if (!size)
+ goto emsgsize;
+ dirty = 0;
+ src++; /* skip x or X. */
+ while ((ch = *src++) != '\0' && ISXDIGIT(ch)) {
+ if (ISUPPER(ch))
+ ch = tolower(ch);
+ n = (int)(strchr(xdigits, ch) - xdigits);
+ if (dirty == 0)
+ tmp = n;
+ else
+ tmp = (tmp << 4) | n;
+ if (++dirty == 2) {
+ if (!size--)
+ goto emsgsize;
+ *dst++ = (unsigned char) tmp;
+ dirty = 0;
+ }
+ }
+ if (dirty) { /* Odd trailing nybble? */
+ if (!size--)
+ goto emsgsize;
+ *dst++ = (unsigned char) (tmp << 4);
+ }
+ } else if (ISDIGIT(ch)) {
+ /* Decimal: eat dotted digit string. */
+ for (;;) {
+ tmp = 0;
+ do {
+ n = (int)(strchr(digits, ch) - digits);
+ tmp *= 10;
+ tmp += n;
+ if (tmp > 255)
+ goto enoent;
+ } while ((ch = *src++) != '\0' &&
+ ISDIGIT(ch));
+ if (!size--)
+ goto emsgsize;
+ *dst++ = (unsigned char) tmp;
+ if (ch == '\0' || ch == '/')
+ break;
+ if (ch != '.')
+ goto enoent;
+ ch = *src++;
+ if (!ISDIGIT(ch))
+ goto enoent;
+ }
+ } else
+ goto enoent;
+
+ bits = -1;
+ if (ch == '/' &&
+ ISDIGIT(src[0]) && dst > odst) {
+ /* CIDR width specifier. Nothing can follow it. */
+ ch = *src++; /* Skip over the /. */
+ bits = 0;
+ do {
+ n = (int)(strchr(digits, ch) - digits);
+ bits *= 10;
+ bits += n;
+ } while ((ch = *src++) != '\0' && ISDIGIT(ch));
+ if (ch != '\0')
+ goto enoent;
+ if (bits > 32)
+ goto emsgsize;
+ }
+
+ /* Firey death and destruction unless we prefetched EOS. */
+ if (ch != '\0')
+ goto enoent;
+
+ /* If nothing was written to the destination, we found no address. */
+ if (dst == odst)
+ goto enoent;
+ /* If no CIDR spec was given, infer width from net class. */
+ if (bits == -1) {
+ if (*odst >= 240) /* Class E */
+ bits = 32;
+ else if (*odst >= 224) /* Class D */
+ bits = 8;
+ else if (*odst >= 192) /* Class C */
+ bits = 24;
+ else if (*odst >= 128) /* Class B */
+ bits = 16;
+ else /* Class A */
+ bits = 8;
+ /* If imputed mask is narrower than specified octets, widen. */
+ if (bits < ((dst - odst) * 8))
+ bits = (int)(dst - odst) * 8;
+ /*
+ * If there are no additional bits specified for a class D
+ * address adjust bits to 4.
+ */
+ if (bits == 8 && *odst == 224)
+ bits = 4;
+ }
+ /* Extend network to cover the actual mask. */
+ while (bits > ((dst - odst) * 8)) {
+ if (!size--)
+ goto emsgsize;
+ *dst++ = '\0';
+ }
+ return (bits);
+
+ enoent:
+ SET_ERRNO(ENOENT);
+ return (-1);
+
+ emsgsize:
+ SET_ERRNO(EMSGSIZE);
+ return (-1);
+}
+
+static int
+getbits(const char *src, int *bitsp)
+{
+ static const char digits[] = "0123456789";
+ int n;
+ int val;
+ char ch;
+
+ val = 0;
+ n = 0;
+ while ((ch = *src++) != '\0') {
+ const char *pch;
+
+ pch = strchr(digits, ch);
+ if (pch != NULL) {
+ if (n++ != 0 && val == 0) /* no leading zeros */
+ return (0);
+ val *= 10;
+ val += (pch - digits);
+ if (val > 128) /* range */
+ return (0);
+ continue;
+ }
+ return (0);
+ }
+ if (n == 0)
+ return (0);
+ *bitsp = val;
+ return (1);
+}
+
+static int
+getv4(const char *src, unsigned char *dst, int *bitsp)
+{
+ static const char digits[] = "0123456789";
+ unsigned char *odst = dst;
+ int n;
+ unsigned int val;
+ char ch;
+
+ val = 0;
+ n = 0;
+ while ((ch = *src++) != '\0') {
+ const char *pch;
+
+ pch = strchr(digits, ch);
+ if (pch != NULL) {
+ if (n++ != 0 && val == 0) /* no leading zeros */
+ return (0);
+ val *= 10;
+ val += (pch - digits);
+ if (val > 255) /* range */
+ return (0);
+ continue;
+ }
+ if (ch == '.' || ch == '/') {
+ if (dst - odst > 3) /* too many octets? */
+ return (0);
+ *dst++ = (unsigned char)val;
+ if (ch == '/')
+ return (getbits(src, bitsp));
+ val = 0;
+ n = 0;
+ continue;
+ }
+ return (0);
+ }
+ if (n == 0)
+ return (0);
+ if (dst - odst > 3) /* too many octets? */
+ return (0);
+ *dst++ = (unsigned char)val;
+ return (1);
+}
+
+static int
+inet_net_pton_ipv6(const char *src, unsigned char *dst, size_t size)
+{
+ static const char xdigits_l[] = "0123456789abcdef",
+ xdigits_u[] = "0123456789ABCDEF";
+ unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
+ const char *xdigits, *curtok;
+ int ch, saw_xdigit;
+ unsigned int val;
+ int digits;
+ int bits;
+ size_t bytes;
+ int words;
+ int ipv4;
+
+ memset((tp = tmp), '\0', NS_IN6ADDRSZ);
+ endp = tp + NS_IN6ADDRSZ;
+ colonp = NULL;
+ /* Leading :: requires some special handling. */
+ if (*src == ':')
+ if (*++src != ':')
+ goto enoent;
+ curtok = src;
+ saw_xdigit = 0;
+ val = 0;
+ digits = 0;
+ bits = -1;
+ ipv4 = 0;
+ while ((ch = *src++) != '\0') {
+ const char *pch;
+
+ if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
+ pch = strchr((xdigits = xdigits_u), ch);
+ if (pch != NULL) {
+ val <<= 4;
+ val |= (pch - xdigits);
+ if (++digits > 4)
+ goto enoent;
+ saw_xdigit = 1;
+ continue;
+ }
+ if (ch == ':') {
+ curtok = src;
+ if (!saw_xdigit) {
+ if (colonp)
+ goto enoent;
+ colonp = tp;
+ continue;
+ } else if (*src == '\0')
+ goto enoent;
+ if (tp + NS_INT16SZ > endp)
+ return (0);
+ *tp++ = (unsigned char)((val >> 8) & 0xff);
+ *tp++ = (unsigned char)(val & 0xff);
+ saw_xdigit = 0;
+ digits = 0;
+ val = 0;
+ continue;
+ }
+ if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
+ getv4(curtok, tp, &bits) > 0) {
+ tp += NS_INADDRSZ;
+ saw_xdigit = 0;
+ ipv4 = 1;
+ break; /* '\0' was seen by inet_pton4(). */
+ }
+ if (ch == '/' && getbits(src, &bits) > 0)
+ break;
+ goto enoent;
+ }
+ if (saw_xdigit) {
+ if (tp + NS_INT16SZ > endp)
+ goto enoent;
+ *tp++ = (unsigned char)((val >> 8) & 0xff);
+ *tp++ = (unsigned char)(val & 0xff);
+ }
+ if (bits == -1)
+ bits = 128;
+
+ words = (bits + 15) / 16;
+ if (words < 2)
+ words = 2;
+ if (ipv4)
+ words = 8;
+ endp = tmp + 2 * words;
+
+ if (colonp != NULL) {
+ /*
+ * Since some memmove()'s erroneously fail to handle
+ * overlapping regions, we'll do the shift by hand.
+ */
+ const ssize_t n = tp - colonp;
+ ssize_t i;
+
+ if (tp == endp)
+ goto enoent;
+ for (i = 1; i <= n; i++) {
+ *(endp - i) = *(colonp + n - i);
+ *(colonp + n - i) = 0;
+ }
+ tp = endp;
+ }
+ if (tp != endp)
+ goto enoent;
+
+ bytes = (bits + 7) / 8;
+ if (bytes > size)
+ goto emsgsize;
+ memcpy(dst, tmp, bytes);
+ return (bits);
+
+ enoent:
+ SET_ERRNO(ENOENT);
+ return (-1);
+
+ emsgsize:
+ SET_ERRNO(EMSGSIZE);
+ return (-1);
+}
+
+/*
+ * int
+ * inet_net_pton(af, src, dst, size)
+ * convert network number from presentation to network format.
+ * accepts hex octets, hex strings, decimal octets, and /CIDR.
+ * "size" is in bytes and describes "dst".
+ * return:
+ * number of bits, either imputed classfully or specified with /CIDR,
+ * or -1 if some failure occurred (check errno). ENOENT means it was
+ * not a valid network specification.
+ * note:
+ * On Windows we store the error in the thread errno, not
+ * in the winsock error code. This is to avoid loosing the
+ * actual last winsock error. So use macro ERRNO to fetch the
+ * errno this funtion sets when returning (-1), not SOCKERRNO.
+ * author:
+ * Paul Vixie (ISC), June 1996
+ */
+int
+ares_inet_net_pton(int af, const char *src, void *dst, size_t size)
+{
+ switch (af) {
+ case AF_INET:
+ return (inet_net_pton_ipv4(src, dst, size));
+ case AF_INET6:
+ return (inet_net_pton_ipv6(src, dst, size));
+ default:
+ SET_ERRNO(EAFNOSUPPORT);
+ return (-1);
+ }
+}
+
+#endif
+
+#ifndef HAVE_INET_PTON
+int ares_inet_pton(int af, const char *src, void *dst)
+{
+ int result;
+ size_t size;
+
+ if (af == AF_INET)
+ size = sizeof(struct in_addr);
+ else if (af == AF_INET6)
+ size = sizeof(struct ares_in6_addr);
+ else
+ {
+ SET_ERRNO(EAFNOSUPPORT);
+ return -1;
+ }
+ result = ares_inet_net_pton(af, src, dst, size);
+ if (result == -1 && ERRNO == ENOENT)
+ return 0;
+ return (result > -1 ? 1 : -1);
+}
+#endif
--- /dev/null
+#ifndef __ARES_INET_NET_PTON_H
+#define __ARES_INET_NET_PTON_H
+
+
+/* Copyright (C) 2005 by Daniel Stenberg
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#ifdef HAVE_INET_PTON
+#define ares_inet_pton(x,y,z) inet_pton(x,y,z)
+#else
+int ares_inet_pton(int af, const char *src, void *dst);
+#endif
+#if defined(HAVE_INET_NET_PTON) && defined(HAVE_INET_NET_PTON_IPV6)
+#define ares_inet_net_pton(w,x,y,z) inet_net_pton(w,x,y,z)
+#else
+int ares_inet_net_pton(int af, const char *src, void *dst, size_t size);
+#endif
+
+#endif /* __ARES_INET_NET_PTON_H */
--- /dev/null
+
+/* Copyright (c) 1996 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#include "ares_setup.h"
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+# include <arpa/nameser.h>
+#else
+# include "nameser.h"
+#endif
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+# include <arpa/nameser_compat.h>
+#endif
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "ares.h"
+#include "ares_ipv6.h"
+#include "inet_ntop.h"
+
+
+#ifndef HAVE_INET_NTOP
+
+#ifdef SPRINTF_CHAR
+# define SPRINTF(x) strlen(sprintf/**/x)
+#else
+# define SPRINTF(x) ((size_t)sprintf x)
+#endif
+
+/*
+ * WARNING: Don't even consider trying to compile this on a system where
+ * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
+ */
+
+static const char *inet_ntop4(const unsigned char *src, char *dst, size_t size);
+static const char *inet_ntop6(const unsigned char *src, char *dst, size_t size);
+
+/* char *
+ * inet_ntop(af, src, dst, size)
+ * convert a network format address to presentation format.
+ * return:
+ * pointer to presentation format address (`dst'), or NULL (see errno).
+ * note:
+ * On Windows we store the error in the thread errno, not
+ * in the winsock error code. This is to avoid loosing the
+ * actual last winsock error. So use macro ERRNO to fetch the
+ * errno this funtion sets when returning NULL, not SOCKERRNO.
+ * author:
+ * Paul Vixie, 1996.
+ */
+const char *
+ares_inet_ntop(int af, const void *src, char *dst, size_t size)
+{
+ switch (af)
+ {
+ case AF_INET:
+ return (inet_ntop4(src, dst, size));
+ case AF_INET6:
+ return (inet_ntop6(src, dst, size));
+ default:
+ SET_ERRNO(EAFNOSUPPORT);
+ return (NULL);
+ }
+ /* NOTREACHED */
+}
+
+/* const char *
+ * inet_ntop4(src, dst, size)
+ * format an IPv4 address, more or less like inet_ntoa()
+ * return:
+ * `dst' (as a const)
+ * notes:
+ * (1) uses no statics
+ * (2) takes a unsigned char* not an in_addr as input
+ * author:
+ * Paul Vixie, 1996.
+ */
+static const char *
+inet_ntop4(const unsigned char *src, char *dst, size_t size)
+{
+ static const char fmt[] = "%u.%u.%u.%u";
+ char tmp[sizeof "255.255.255.255"];
+
+ if (SPRINTF((tmp, fmt, src[0], src[1], src[2], src[3])) > size)
+ {
+ SET_ERRNO(ENOSPC);
+ return (NULL);
+ }
+ strcpy(dst, tmp);
+ return (dst);
+}
+
+/* const char *
+ * inet_ntop6(src, dst, size)
+ * convert IPv6 binary address into presentation (printable) format
+ * author:
+ * Paul Vixie, 1996.
+ */
+static const char *
+inet_ntop6(const unsigned char *src, char *dst, size_t size)
+{
+ /*
+ * Note that int32_t and int16_t need only be "at least" large enough
+ * to contain a value of the specified size. On some systems, like
+ * Crays, there is no such thing as an integer variable with 16 bits.
+ * Keep this in mind if you think this function should have been coded
+ * to use pointer overlays. All the world's not a VAX.
+ */
+ char tmp[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")];
+ char *tp;
+ struct {
+ long base;
+ long len;
+ } best, cur;
+ unsigned long words[NS_IN6ADDRSZ / NS_INT16SZ];
+ int i;
+
+ /*
+ * Preprocess:
+ * Copy the input (bytewise) array into a wordwise array.
+ * Find the longest run of 0x00's in src[] for :: shorthanding.
+ */
+ memset(words, '\0', sizeof(words));
+ for (i = 0; i < NS_IN6ADDRSZ; i++)
+ words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3));
+
+ best.base = -1;
+ cur.base = -1;
+ best.len = 0;
+ cur.len = 0;
+
+ for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++)
+ {
+ if (words[i] == 0)
+ {
+ if (cur.base == -1)
+ cur.base = i, cur.len = 1;
+ else
+ cur.len++;
+ }
+ else
+ {
+ if (cur.base != -1)
+ {
+ if (best.base == -1 || cur.len > best.len)
+ best = cur;
+ cur.base = -1;
+ }
+ }
+ }
+ if (cur.base != -1)
+ {
+ if (best.base == -1 || cur.len > best.len)
+ best = cur;
+ }
+ if (best.base != -1 && best.len < 2)
+ best.base = -1;
+
+ /*
+ * Format the result.
+ */
+ tp = tmp;
+ for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++)
+ {
+ /* Are we inside the best run of 0x00's? */
+ if (best.base != -1 && i >= best.base &&
+ i < (best.base + best.len))
+ {
+ if (i == best.base)
+ *tp++ = ':';
+ continue;
+ }
+ /* Are we following an initial run of 0x00s or any real hex? */
+ if (i != 0)
+ *tp++ = ':';
+ /* Is this address an encapsulated IPv4? */
+ if (i == 6 && best.base == 0 &&
+ (best.len == 6 || (best.len == 5 && words[5] == 0xffff)))
+ {
+ if (!inet_ntop4(src+12, tp, sizeof(tmp) - (tp - tmp)))
+ return (NULL);
+ tp += strlen(tp);
+ break;
+ }
+ tp += SPRINTF((tp, "%lx", words[i]));
+ }
+
+ /* Was it a trailing run of 0x00's? */
+ if (best.base != -1 && (best.base + best.len) == (NS_IN6ADDRSZ / NS_INT16SZ))
+ *tp++ = ':';
+ *tp++ = '\0';
+
+ /*
+ * Check for overflow, copy, and we're done.
+ */
+ if ((size_t)(tp - tmp) > size)
+ {
+ SET_ERRNO(ENOSPC);
+ return (NULL);
+ }
+ strcpy(dst, tmp);
+ return (dst);
+}
+#endif
+
--- /dev/null
+#ifndef __ARES_INET_NTOP_H
+#define __ARES_INET_NTOP_H
+
+
+/* Copyright (C) 2005 by Dominick Meglio
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software and its documentation for any purpose and without
+ * fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in
+ * advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+#ifdef HAVE_INET_NTOP
+#define ares_inet_ntop(w,x,y,z) inet_ntop(w,x,y,z)
+#else
+const char *ares_inet_ntop(int af, const void *src, char *dst, size_t size);
+#endif
+
+#endif /* __ARES_INET_NTOP_H */
--- /dev/null
+
+#ifndef ARES_NAMESER_H
+#define ARES_NAMESER_H
+
+/* header file provided by liren@vivisimo.com */
+
+#ifndef HAVE_ARPA_NAMESER_H
+
+#define NS_PACKETSZ 512 /* maximum packet size */
+#define NS_MAXDNAME 256 /* maximum domain name */
+#define NS_MAXCDNAME 255 /* maximum compressed domain name */
+#define NS_MAXLABEL 63
+#define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */
+#define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */
+#define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */
+#define NS_INT16SZ 2
+#define NS_INADDRSZ 4
+#define NS_IN6ADDRSZ 16
+#define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */
+#define NS_DEFAULTPORT 53 /* For both TCP and UDP. */
+
+typedef enum __ns_class {
+ ns_c_invalid = 0, /* Cookie. */
+ ns_c_in = 1, /* Internet. */
+ ns_c_2 = 2, /* unallocated/unsupported. */
+ ns_c_chaos = 3, /* MIT Chaos-net. */
+ ns_c_hs = 4, /* MIT Hesiod. */
+ /* Query class values which do not appear in resource records */
+ ns_c_none = 254, /* for prereq. sections in update requests */
+ ns_c_any = 255, /* Wildcard match. */
+ ns_c_max = 65536
+} ns_class;
+
+typedef enum __ns_type {
+ ns_t_invalid = 0, /* Cookie. */
+ ns_t_a = 1, /* Host address. */
+ ns_t_ns = 2, /* Authoritative server. */
+ ns_t_md = 3, /* Mail destination. */
+ ns_t_mf = 4, /* Mail forwarder. */
+ ns_t_cname = 5, /* Canonical name. */
+ ns_t_soa = 6, /* Start of authority zone. */
+ ns_t_mb = 7, /* Mailbox domain name. */
+ ns_t_mg = 8, /* Mail group member. */
+ ns_t_mr = 9, /* Mail rename name. */
+ ns_t_null = 10, /* Null resource record. */
+ ns_t_wks = 11, /* Well known service. */
+ ns_t_ptr = 12, /* Domain name pointer. */
+ ns_t_hinfo = 13, /* Host information. */
+ ns_t_minfo = 14, /* Mailbox information. */
+ ns_t_mx = 15, /* Mail routing information. */
+ ns_t_txt = 16, /* Text strings. */
+ ns_t_rp = 17, /* Responsible person. */
+ ns_t_afsdb = 18, /* AFS cell database. */
+ ns_t_x25 = 19, /* X_25 calling address. */
+ ns_t_isdn = 20, /* ISDN calling address. */
+ ns_t_rt = 21, /* Router. */
+ ns_t_nsap = 22, /* NSAP address. */
+ ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */
+ ns_t_sig = 24, /* Security signature. */
+ ns_t_key = 25, /* Security key. */
+ ns_t_px = 26, /* X.400 mail mapping. */
+ ns_t_gpos = 27, /* Geographical position (withdrawn). */
+ ns_t_aaaa = 28, /* Ip6 Address. */
+ ns_t_loc = 29, /* Location Information. */
+ ns_t_nxt = 30, /* Next domain (security). */
+ ns_t_eid = 31, /* Endpoint identifier. */
+ ns_t_nimloc = 32, /* Nimrod Locator. */
+ ns_t_srv = 33, /* Server Selection. */
+ ns_t_atma = 34, /* ATM Address */
+ ns_t_naptr = 35, /* Naming Authority PoinTeR */
+ ns_t_kx = 36, /* Key Exchange */
+ ns_t_cert = 37, /* Certification record */
+ ns_t_a6 = 38, /* IPv6 address (deprecates AAAA) */
+ ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */
+ ns_t_sink = 40, /* Kitchen sink (experimentatl) */
+ ns_t_opt = 41, /* EDNS0 option (meta-RR) */
+ ns_t_apl = 42, /* Address prefix list (RFC3123) */
+ ns_t_tkey = 249, /* Transaction key */
+ ns_t_tsig = 250, /* Transaction signature. */
+ ns_t_ixfr = 251, /* Incremental zone transfer. */
+ ns_t_axfr = 252, /* Transfer zone of authority. */
+ ns_t_mailb = 253, /* Transfer mailbox records. */
+ ns_t_maila = 254, /* Transfer mail agent records. */
+ ns_t_any = 255, /* Wildcard match. */
+ ns_t_zxfr = 256, /* BIND-specific, nonstandard. */
+ ns_t_max = 65536
+} ns_type;
+
+typedef enum __ns_opcode {
+ ns_o_query = 0, /* Standard query. */
+ ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */
+ ns_o_status = 2, /* Name server status query (unsupported). */
+ /* Opcode 3 is undefined/reserved. */
+ ns_o_notify = 4, /* Zone change notification. */
+ ns_o_update = 5, /* Zone update message. */
+ ns_o_max = 6
+} ns_opcode;
+
+typedef enum __ns_rcode {
+ ns_r_noerror = 0, /* No error occurred. */
+ ns_r_formerr = 1, /* Format error. */
+ ns_r_servfail = 2, /* Server failure. */
+ ns_r_nxdomain = 3, /* Name error. */
+ ns_r_notimpl = 4, /* Unimplemented. */
+ ns_r_refused = 5, /* Operation refused. */
+ /* these are for BIND_UPDATE */
+ ns_r_yxdomain = 6, /* Name exists */
+ ns_r_yxrrset = 7, /* RRset exists */
+ ns_r_nxrrset = 8, /* RRset does not exist */
+ ns_r_notauth = 9, /* Not authoritative for zone */
+ ns_r_notzone = 10, /* Zone of record different from zone section */
+ ns_r_max = 11,
+ /* The following are TSIG extended errors */
+ ns_r_badsig = 16,
+ ns_r_badkey = 17,
+ ns_r_badtime = 18
+} ns_rcode;
+
+#endif /* HAVE_ARPA_NAMESER_H */
+
+#ifndef HAVE_ARPA_NAMESER_COMPAT_H
+
+#define PACKETSZ NS_PACKETSZ
+#define MAXDNAME NS_MAXDNAME
+#define MAXCDNAME NS_MAXCDNAME
+#define MAXLABEL NS_MAXLABEL
+#define HFIXEDSZ NS_HFIXEDSZ
+#define QFIXEDSZ NS_QFIXEDSZ
+#define RRFIXEDSZ NS_RRFIXEDSZ
+#define INDIR_MASK NS_CMPRSFLGS
+#define NAMESERVER_PORT NS_DEFAULTPORT
+
+#define QUERY ns_o_query
+
+#define SERVFAIL ns_r_servfail
+#define NOTIMP ns_r_notimpl
+#define REFUSED ns_r_refused
+#undef NOERROR /* it seems this is already defined in winerror.h */
+#define NOERROR ns_r_noerror
+#define FORMERR ns_r_formerr
+#define NXDOMAIN ns_r_nxdomain
+
+#define C_IN ns_c_in
+#define C_CHAOS ns_c_chaos
+#define C_HS ns_c_hs
+#define C_NONE ns_c_none
+#define C_ANY ns_c_any
+
+#define T_A ns_t_a
+#define T_NS ns_t_ns
+#define T_MD ns_t_md
+#define T_MF ns_t_mf
+#define T_CNAME ns_t_cname
+#define T_SOA ns_t_soa
+#define T_MB ns_t_mb
+#define T_MG ns_t_mg
+#define T_MR ns_t_mr
+#define T_NULL ns_t_null
+#define T_WKS ns_t_wks
+#define T_PTR ns_t_ptr
+#define T_HINFO ns_t_hinfo
+#define T_MINFO ns_t_minfo
+#define T_MX ns_t_mx
+#define T_TXT ns_t_txt
+#define T_RP ns_t_rp
+#define T_AFSDB ns_t_afsdb
+#define T_X25 ns_t_x25
+#define T_ISDN ns_t_isdn
+#define T_RT ns_t_rt
+#define T_NSAP ns_t_nsap
+#define T_NSAP_PTR ns_t_nsap_ptr
+#define T_SIG ns_t_sig
+#define T_KEY ns_t_key
+#define T_PX ns_t_px
+#define T_GPOS ns_t_gpos
+#define T_AAAA ns_t_aaaa
+#define T_LOC ns_t_loc
+#define T_NXT ns_t_nxt
+#define T_EID ns_t_eid
+#define T_NIMLOC ns_t_nimloc
+#define T_SRV ns_t_srv
+#define T_ATMA ns_t_atma
+#define T_NAPTR ns_t_naptr
+#define T_TSIG ns_t_tsig
+#define T_IXFR ns_t_ixfr
+#define T_AXFR ns_t_axfr
+#define T_MAILB ns_t_mailb
+#define T_MAILA ns_t_maila
+#define T_ANY ns_t_any
+
+#endif /* HAVE_ARPA_NAMESER_COMPAT_H */
+
+#endif /* ARES_NAMESER_H */
--- /dev/null
+#ifndef __SETUP_ONCE_H
+#define __SETUP_ONCE_H
+
+
+/* Copyright (C) 2004 - 2010 by Daniel Stenberg et al
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of M.I.T. not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. M.I.T. makes no representations about the
+ * suitability of this software for any purpose. It is provided "as is"
+ * without express or implied warranty.
+ */
+
+
+/********************************************************************
+ * NOTICE *
+ * ======== *
+ * *
+ * Content of header files lib/setup_once.h and ares/setup_once.h *
+ * must be kept in sync. Modify the other one if you change this. *
+ * *
+ ********************************************************************/
+
+
+/*
+ * Inclusion of common header files.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <errno.h>
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef NEED_MALLOC_H
+#include <malloc.h>
+#endif
+
+#ifdef NEED_MEMORY_H
+#include <memory.h>
+#endif
+
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#ifdef TIME_WITH_SYS_TIME
+#include <time.h>
+#endif
+#else
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+#endif
+
+#ifdef WIN32
+#include <io.h>
+#include <fcntl.h>
+#endif
+
+#ifdef HAVE_STDBOOL_H
+#include <stdbool.h>
+#endif
+
+
+/*
+ * Definition of timeval struct for platforms that don't have it.
+ */
+
+#ifndef HAVE_STRUCT_TIMEVAL
+struct timeval {
+ long tv_sec;
+ long tv_usec;
+};
+#endif
+
+
+/*
+ * If we have the MSG_NOSIGNAL define, make sure we use
+ * it as the fourth argument of function send()
+ */
+
+#ifdef HAVE_MSG_NOSIGNAL
+#define SEND_4TH_ARG MSG_NOSIGNAL
+#else
+#define SEND_4TH_ARG 0
+#endif
+
+
+#if defined(__minix)
+/* Minix doesn't support recv on TCP sockets */
+#define sread(x,y,z) (ssize_t)read((RECV_TYPE_ARG1)(x), \
+ (RECV_TYPE_ARG2)(y), \
+ (RECV_TYPE_ARG3)(z))
+
+#elif defined(HAVE_RECV)
+/*
+ * The definitions for the return type and arguments types
+ * of functions recv() and send() belong and come from the
+ * configuration file. Do not define them in any other place.
+ *
+ * HAVE_RECV is defined if you have a function named recv()
+ * which is used to read incoming data from sockets. If your
+ * function has another name then don't define HAVE_RECV.
+ *
+ * If HAVE_RECV is defined then RECV_TYPE_ARG1, RECV_TYPE_ARG2,
+ * RECV_TYPE_ARG3, RECV_TYPE_ARG4 and RECV_TYPE_RETV must also
+ * be defined.
+ *
+ * HAVE_SEND is defined if you have a function named send()
+ * which is used to write outgoing data on a connected socket.
+ * If yours has another name then don't define HAVE_SEND.
+ *
+ * If HAVE_SEND is defined then SEND_TYPE_ARG1, SEND_QUAL_ARG2,
+ * SEND_TYPE_ARG2, SEND_TYPE_ARG3, SEND_TYPE_ARG4 and
+ * SEND_TYPE_RETV must also be defined.
+ */
+
+#if !defined(RECV_TYPE_ARG1) || \
+ !defined(RECV_TYPE_ARG2) || \
+ !defined(RECV_TYPE_ARG3) || \
+ !defined(RECV_TYPE_ARG4) || \
+ !defined(RECV_TYPE_RETV)
+ /* */
+ Error Missing_definition_of_return_and_arguments_types_of_recv
+ /* */
+#else
+#define sread(x,y,z) (ssize_t)recv((RECV_TYPE_ARG1)(x), \
+ (RECV_TYPE_ARG2)(y), \
+ (RECV_TYPE_ARG3)(z), \
+ (RECV_TYPE_ARG4)(0))
+#endif
+#else /* HAVE_RECV */
+#ifndef sread
+ /* */
+ Error Missing_definition_of_macro_sread
+ /* */
+#endif
+#endif /* HAVE_RECV */
+
+
+#if defined(__minix)
+/* Minix doesn't support send on TCP sockets */
+#define swrite(x,y,z) (ssize_t)write((SEND_TYPE_ARG1)(x), \
+ (SEND_TYPE_ARG2)(y), \
+ (SEND_TYPE_ARG3)(z))
+
+#elif defined(HAVE_SEND)
+#if !defined(SEND_TYPE_ARG1) || \
+ !defined(SEND_QUAL_ARG2) || \
+ !defined(SEND_TYPE_ARG2) || \
+ !defined(SEND_TYPE_ARG3) || \
+ !defined(SEND_TYPE_ARG4) || \
+ !defined(SEND_TYPE_RETV)
+ /* */
+ Error Missing_definition_of_return_and_arguments_types_of_send
+ /* */
+#else
+#define swrite(x,y,z) (ssize_t)send((SEND_TYPE_ARG1)(x), \
+ (SEND_TYPE_ARG2)(y), \
+ (SEND_TYPE_ARG3)(z), \
+ (SEND_TYPE_ARG4)(SEND_4TH_ARG))
+#endif
+#else /* HAVE_SEND */
+#ifndef swrite
+ /* */
+ Error Missing_definition_of_macro_swrite
+ /* */
+#endif
+#endif /* HAVE_SEND */
+
+
+#if 0
+#if defined(HAVE_RECVFROM)
+/*
+ * Currently recvfrom is only used on udp sockets.
+ */
+#if !defined(RECVFROM_TYPE_ARG1) || \
+ !defined(RECVFROM_TYPE_ARG2) || \
+ !defined(RECVFROM_TYPE_ARG3) || \
+ !defined(RECVFROM_TYPE_ARG4) || \
+ !defined(RECVFROM_TYPE_ARG5) || \
+ !defined(RECVFROM_TYPE_ARG6) || \
+ !defined(RECVFROM_TYPE_RETV)
+ /* */
+ Error Missing_definition_of_return_and_arguments_types_of_recvfrom
+ /* */
+#else
+#define sreadfrom(s,b,bl,f,fl) (ssize_t)recvfrom((RECVFROM_TYPE_ARG1) (s), \
+ (RECVFROM_TYPE_ARG2 *)(b), \
+ (RECVFROM_TYPE_ARG3) (bl), \
+ (RECVFROM_TYPE_ARG4) (0), \
+ (RECVFROM_TYPE_ARG5 *)(f), \
+ (RECVFROM_TYPE_ARG6 *)(fl))
+#endif
+#else /* HAVE_RECVFROM */
+#ifndef sreadfrom
+ /* */
+ Error Missing_definition_of_macro_sreadfrom
+ /* */
+#endif
+#endif /* HAVE_RECVFROM */
+
+
+#ifdef RECVFROM_TYPE_ARG6_IS_VOID
+# define RECVFROM_ARG6_T int
+#else
+# define RECVFROM_ARG6_T RECVFROM_TYPE_ARG6
+#endif
+#endif /* if 0 */
+
+
+/*
+ * Function-like macro definition used to close a socket.
+ */
+
+#if defined(HAVE_CLOSESOCKET)
+# define sclose(x) closesocket((x))
+#elif defined(HAVE_CLOSESOCKET_CAMEL)
+# define sclose(x) CloseSocket((x))
+#else
+# define sclose(x) close((x))
+#endif
+
+
+/*
+ * Uppercase macro versions of ANSI/ISO is*() functions/macros which
+ * avoid negative number inputs with argument byte codes > 127.
+ */
+
+#define ISSPACE(x) (isspace((int) ((unsigned char)x)))
+#define ISDIGIT(x) (isdigit((int) ((unsigned char)x)))
+#define ISALNUM(x) (isalnum((int) ((unsigned char)x)))
+#define ISXDIGIT(x) (isxdigit((int) ((unsigned char)x)))
+#define ISGRAPH(x) (isgraph((int) ((unsigned char)x)))
+#define ISALPHA(x) (isalpha((int) ((unsigned char)x)))
+#define ISPRINT(x) (isprint((int) ((unsigned char)x)))
+#define ISUPPER(x) (isupper((int) ((unsigned char)x)))
+#define ISLOWER(x) (islower((int) ((unsigned char)x)))
+
+#define ISBLANK(x) (int)((((unsigned char)x) == ' ') || \
+ (((unsigned char)x) == '\t'))
+
+#define TOLOWER(x) (tolower((int) ((unsigned char)x)))
+
+
+/*
+ * 'bool' exists on platforms with <stdbool.h>, i.e. C99 platforms.
+ * On non-C99 platforms there's no bool, so define an enum for that.
+ * On C99 platforms 'false' and 'true' also exist. Enum uses a
+ * global namespace though, so use bool_false and bool_true.
+ */
+
+#ifndef HAVE_BOOL_T
+ typedef enum {
+ bool_false = 0,
+ bool_true = 1
+ } bool;
+
+/*
+ * Use a define to let 'true' and 'false' use those enums. There
+ * are currently no use of true and false in libcurl proper, but
+ * there are some in the examples. This will cater for any later
+ * code happening to use true and false.
+ */
+# define false bool_false
+# define true bool_true
+# define HAVE_BOOL_T
+#endif
+
+
+/*
+ * Redefine TRUE and FALSE too, to catch current use. With this
+ * change, 'bool found = 1' will give a warning on MIPSPro, but
+ * 'bool found = TRUE' will not. Change tested on IRIX/MIPSPro,
+ * AIX 5.1/Xlc, Tru64 5.1/cc, w/make test too.
+ */
+
+#ifndef TRUE
+#define TRUE true
+#endif
+#ifndef FALSE
+#define FALSE false
+#endif
+
+
+/*
+ * Typedef to 'int' if sig_atomic_t is not an available 'typedefed' type.
+ */
+
+#ifndef HAVE_SIG_ATOMIC_T
+typedef int sig_atomic_t;
+#define HAVE_SIG_ATOMIC_T
+#endif
+
+
+/*
+ * Convenience SIG_ATOMIC_T definition
+ */
+
+#ifdef HAVE_SIG_ATOMIC_T_VOLATILE
+#define SIG_ATOMIC_T static sig_atomic_t
+#else
+#define SIG_ATOMIC_T static volatile sig_atomic_t
+#endif
+
+
+/*
+ * Default return type for signal handlers.
+ */
+
+#ifndef RETSIGTYPE
+#define RETSIGTYPE void
+#endif
+
+
+/*
+ * Macro used to include code only in debug builds.
+ */
+
+#ifdef DEBUGBUILD
+#define DEBUGF(x) x
+#else
+#define DEBUGF(x) do { } while (0)
+#endif
+
+
+/*
+ * Macro used to include assertion code only in debug builds.
+ */
+
+#if defined(DEBUGBUILD) && defined(HAVE_ASSERT_H)
+#define DEBUGASSERT(x) assert(x)
+#else
+#define DEBUGASSERT(x) do { } while (0)
+#endif
+
+
+/*
+ * Macro SOCKERRNO / SET_SOCKERRNO() returns / sets the *socket-related* errno
+ * (or equivalent) on this platform to hide platform details to code using it.
+ */
+
+#ifdef USE_WINSOCK
+#define SOCKERRNO ((int)WSAGetLastError())
+#define SET_SOCKERRNO(x) (WSASetLastError((int)(x)))
+#else
+#define SOCKERRNO (errno)
+#define SET_SOCKERRNO(x) (errno = (x))
+#endif
+
+
+/*
+ * Macro ERRNO / SET_ERRNO() returns / sets the NOT *socket-related* errno
+ * (or equivalent) on this platform to hide platform details to code using it.
+ */
+
+#ifdef WIN32
+#define ERRNO ((int)GetLastError())
+#define SET_ERRNO(x) (SetLastError((DWORD)(x)))
+#else
+#define ERRNO (errno)
+#define SET_ERRNO(x) (errno = (x))
+#endif
+
+
+/*
+ * Portable error number symbolic names defined to Winsock error codes.
+ */
+
+#ifdef USE_WINSOCK
+#undef EBADF /* override definition in errno.h */
+#define EBADF WSAEBADF
+#undef EINTR /* override definition in errno.h */
+#define EINTR WSAEINTR
+#undef EINVAL /* override definition in errno.h */
+#define EINVAL WSAEINVAL
+#undef EWOULDBLOCK /* override definition in errno.h */
+#define EWOULDBLOCK WSAEWOULDBLOCK
+#undef EINPROGRESS /* override definition in errno.h */
+#define EINPROGRESS WSAEINPROGRESS
+#undef EALREADY /* override definition in errno.h */
+#define EALREADY WSAEALREADY
+#undef ENOTSOCK /* override definition in errno.h */
+#define ENOTSOCK WSAENOTSOCK
+#undef EDESTADDRREQ /* override definition in errno.h */
+#define EDESTADDRREQ WSAEDESTADDRREQ
+#undef EMSGSIZE /* override definition in errno.h */
+#define EMSGSIZE WSAEMSGSIZE
+#undef EPROTOTYPE /* override definition in errno.h */
+#define EPROTOTYPE WSAEPROTOTYPE
+#undef ENOPROTOOPT /* override definition in errno.h */
+#define ENOPROTOOPT WSAENOPROTOOPT
+#undef EPROTONOSUPPORT /* override definition in errno.h */
+#define EPROTONOSUPPORT WSAEPROTONOSUPPORT
+#define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
+#undef EOPNOTSUPP /* override definition in errno.h */
+#define EOPNOTSUPP WSAEOPNOTSUPP
+#define EPFNOSUPPORT WSAEPFNOSUPPORT
+#undef EAFNOSUPPORT /* override definition in errno.h */
+#define EAFNOSUPPORT WSAEAFNOSUPPORT
+#undef EADDRINUSE /* override definition in errno.h */
+#define EADDRINUSE WSAEADDRINUSE
+#undef EADDRNOTAVAIL /* override definition in errno.h */
+#define EADDRNOTAVAIL WSAEADDRNOTAVAIL
+#undef ENETDOWN /* override definition in errno.h */
+#define ENETDOWN WSAENETDOWN
+#undef ENETUNREACH /* override definition in errno.h */
+#define ENETUNREACH WSAENETUNREACH
+#undef ENETRESET /* override definition in errno.h */
+#define ENETRESET WSAENETRESET
+#undef ECONNABORTED /* override definition in errno.h */
+#define ECONNABORTED WSAECONNABORTED
+#undef ECONNRESET /* override definition in errno.h */
+#define ECONNRESET WSAECONNRESET
+#undef ENOBUFS /* override definition in errno.h */
+#define ENOBUFS WSAENOBUFS
+#undef EISCONN /* override definition in errno.h */
+#define EISCONN WSAEISCONN
+#undef ENOTCONN /* override definition in errno.h */
+#define ENOTCONN WSAENOTCONN
+#define ESHUTDOWN WSAESHUTDOWN
+#define ETOOMANYREFS WSAETOOMANYREFS
+#undef ETIMEDOUT /* override definition in errno.h */
+#define ETIMEDOUT WSAETIMEDOUT
+#undef ECONNREFUSED /* override definition in errno.h */
+#define ECONNREFUSED WSAECONNREFUSED
+#undef ELOOP /* override definition in errno.h */
+#define ELOOP WSAELOOP
+#ifndef ENAMETOOLONG /* possible previous definition in errno.h */
+#define ENAMETOOLONG WSAENAMETOOLONG
+#endif
+#define EHOSTDOWN WSAEHOSTDOWN
+#undef EHOSTUNREACH /* override definition in errno.h */
+#define EHOSTUNREACH WSAEHOSTUNREACH
+#ifndef ENOTEMPTY /* possible previous definition in errno.h */
+#define ENOTEMPTY WSAENOTEMPTY
+#endif
+#define EPROCLIM WSAEPROCLIM
+#define EUSERS WSAEUSERS
+#define EDQUOT WSAEDQUOT
+#define ESTALE WSAESTALE
+#define EREMOTE WSAEREMOTE
+#endif
+
+
+/*
+ * Actually use __32_getpwuid() on 64-bit VMS builds for getpwuid()
+ */
+
+#if defined(__VMS) && \
+ defined(__INITIAL_POINTER_SIZE) && (__INITIAL_POINTER_SIZE == 64)
+#define getpwuid __32_getpwuid
+#endif
+
+
+/*
+ * Macro argv_item_t hides platform details to code using it.
+ */
+
+#ifdef __VMS
+#define argv_item_t __char_ptr32
+#else
+#define argv_item_t char *
+#endif
+
+
+/*
+ * We use this ZERO_NULL to avoid picky compiler warnings,
+ * when assigning a NULL pointer to a function pointer var.
+ */
+
+#define ZERO_NULL 0
+
+
+#endif /* __SETUP_ONCE_H */
+
--- /dev/null
+#include "ares_setup.h"
+
+
+/* only do the following on windows
+ */
+#if (defined(WIN32) || defined(WATT32)) && !defined(MSDOS)
+
+#ifdef __WATCOMC__
+/*
+ * Watcom needs a DllMain() in order to initialise the clib startup code.
+ */
+BOOL
+WINAPI DllMain (HINSTANCE hnd, DWORD reason, LPVOID reserved)
+{
+ (void) hnd;
+ (void) reason;
+ (void) reserved;
+ return (TRUE);
+}
+#endif
+
+#endif /* WIN32 builds only */
--- /dev/null
+Revision history for libeio
+
+TODO: maybe add mincore support? available on at least darwin, solaris, linux, freebsd
+TODO: openbsd requites stdint.h for intptr_t - why posix?
+
+1.0
+ - readdir: correctly handle malloc failures.
+ - readdir: new flags argument, can return inode
+ and possibly filetype, can sort in various ways.
+ - readdir: stop immediately when cancelled, do
+ not continue reading the directory.
+ - fix return value of eio_sendfile_sync.
+ - include sys/mman.h for msync.
+ - added EIO_STACKSIZE.
+ - added msync, mtouch support (untested).
+ - added sync_file_range (untested).
+ - fixed custom support.
+ - use a more robust feed-add detection method.
+ - "outbundled" from IO::AIO.
+ - eio_set_max_polltime did not properly convert time to ticks.
+ - tentatively support darwin in sendfile.
+ - fix freebsd/darwin sendfile.
+ - also use sendfile emulation for ENOTSUP and EOPNOTSUPP
+ error codes.
+ - add OS-independent EIO_MT_* and EIO_MS_* flag enums.
+ - add eio_statvfs/eio_fstatvfs.
+ - add eio_mlock/eio_mlockall and OS-independent MCL_* flag enums.
+ - no longer set errno to 0 before making syscalls, this only lures
+ people into the trap of believing errno shows success or failure.
+ - "fix" demo.c so that it works as non-root.
+ - suppoert utimes seperately from futimes, as some systems have
+ utimes but not futimes.
+ - use _POSIX_MEMLOCK_RANGE for mlock.
+ - do not (errornously) overwrite CFLAGS in configure.ac.
+
--- /dev/null
+All files in libeio are Copyright (C)2007,2008 Marc Alexander Lehmann.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the following
+ disclaimer in the documentation and/or other materials provided
+ with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Alternatively, the contents of this package may be used under the terms
+of the GNU General Public License ("GPL") version 2 or any later version,
+in which case the provisions of the GPL are applicable instead of the
+above. If you wish to allow the use of your version of this package only
+under the terms of the GPL and not to allow others to use your version of
+this file under the BSD license, indicate your decision by deleting the
+provisions above and replace them with the notice and other provisions
+required by the GPL in this and the other files of this package. If you do
+not delete the provisions above, a recipient may use your version of this
+file under either the BSD or the GPL.
--- /dev/null
+AUTOMAKE_OPTIONS = foreign no-dependencies
+
+VERSION_INFO = 1:0
+
+EXTRA_DIST = LICENSE Changes autogen.sh
+
+#man_MANS = ev.3
+
+include_HEADERS = eio.h
+
+lib_LTLIBRARIES = libeio.la
+
+libeio_la_SOURCES = eio.c xthread.h config.h
+libeio_la_LDFLAGS = -version-info $(VERSION_INFO)
+
--- /dev/null
+# generated automatically by aclocal 1.11.1 -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+m4_ifndef([AC_AUTOCONF_VERSION],
+ [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
+m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.67],,
+[m4_warning([this file was generated for autoconf 2.67.
+You have another version of autoconf. It may work, but is not guaranteed to.
+If you have problems, you may need to regenerate the build system entirely.
+To do so, use the procedure documented by the package, typically `autoreconf'.])])
+
+# libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
+#
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+# 2006, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gordon Matzigkeit, 1996
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+m4_define([_LT_COPYING], [dnl
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+# 2006, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gordon Matzigkeit, 1996
+#
+# This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING. If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
+# obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+])
+
+# serial 56 LT_INIT
+
+
+# LT_PREREQ(VERSION)
+# ------------------
+# Complain and exit if this libtool version is less that VERSION.
+m4_defun([LT_PREREQ],
+[m4_if(m4_version_compare(m4_defn([LT_PACKAGE_VERSION]), [$1]), -1,
+ [m4_default([$3],
+ [m4_fatal([Libtool version $1 or higher is required],
+ 63)])],
+ [$2])])
+
+
+# _LT_CHECK_BUILDDIR
+# ------------------
+# Complain if the absolute build directory name contains unusual characters
+m4_defun([_LT_CHECK_BUILDDIR],
+[case `pwd` in
+ *\ * | *\ *)
+ AC_MSG_WARN([Libtool does not cope well with whitespace in `pwd`]) ;;
+esac
+])
+
+
+# LT_INIT([OPTIONS])
+# ------------------
+AC_DEFUN([LT_INIT],
+[AC_PREREQ([2.58])dnl We use AC_INCLUDES_DEFAULT
+AC_BEFORE([$0], [LT_LANG])dnl
+AC_BEFORE([$0], [LT_OUTPUT])dnl
+AC_BEFORE([$0], [LTDL_INIT])dnl
+m4_require([_LT_CHECK_BUILDDIR])dnl
+
+dnl Autoconf doesn't catch unexpanded LT_ macros by default:
+m4_pattern_forbid([^_?LT_[A-Z_]+$])dnl
+m4_pattern_allow([^(_LT_EOF|LT_DLGLOBAL|LT_DLLAZY_OR_NOW|LT_MULTI_MODULE)$])dnl
+dnl aclocal doesn't pull ltoptions.m4, ltsugar.m4, or ltversion.m4
+dnl unless we require an AC_DEFUNed macro:
+AC_REQUIRE([LTOPTIONS_VERSION])dnl
+AC_REQUIRE([LTSUGAR_VERSION])dnl
+AC_REQUIRE([LTVERSION_VERSION])dnl
+AC_REQUIRE([LTOBSOLETE_VERSION])dnl
+m4_require([_LT_PROG_LTMAIN])dnl
+
+dnl Parse OPTIONS
+_LT_SET_OPTIONS([$0], [$1])
+
+# This can be used to rebuild libtool when needed
+LIBTOOL_DEPS="$ltmain"
+
+# Always use our own libtool.
+LIBTOOL='$(SHELL) $(top_builddir)/libtool'
+AC_SUBST(LIBTOOL)dnl
+
+_LT_SETUP
+
+# Only expand once:
+m4_define([LT_INIT])
+])# LT_INIT
+
+# Old names:
+AU_ALIAS([AC_PROG_LIBTOOL], [LT_INIT])
+AU_ALIAS([AM_PROG_LIBTOOL], [LT_INIT])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_PROG_LIBTOOL], [])
+dnl AC_DEFUN([AM_PROG_LIBTOOL], [])
+
+
+# _LT_CC_BASENAME(CC)
+# -------------------
+# Calculate cc_basename. Skip known compiler wrappers and cross-prefix.
+m4_defun([_LT_CC_BASENAME],
+[for cc_temp in $1""; do
+ case $cc_temp in
+ compile | *[[\\/]]compile | ccache | *[[\\/]]ccache ) ;;
+ distcc | *[[\\/]]distcc | purify | *[[\\/]]purify ) ;;
+ \-*) ;;
+ *) break;;
+ esac
+done
+cc_basename=`$ECHO "X$cc_temp" | $Xsed -e 's%.*/%%' -e "s%^$host_alias-%%"`
+])
+
+
+# _LT_FILEUTILS_DEFAULTS
+# ----------------------
+# It is okay to use these file commands and assume they have been set
+# sensibly after `m4_require([_LT_FILEUTILS_DEFAULTS])'.
+m4_defun([_LT_FILEUTILS_DEFAULTS],
+[: ${CP="cp -f"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+])# _LT_FILEUTILS_DEFAULTS
+
+
+# _LT_SETUP
+# ---------
+m4_defun([_LT_SETUP],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+_LT_DECL([], [host_alias], [0], [The host system])dnl
+_LT_DECL([], [host], [0])dnl
+_LT_DECL([], [host_os], [0])dnl
+dnl
+_LT_DECL([], [build_alias], [0], [The build system])dnl
+_LT_DECL([], [build], [0])dnl
+_LT_DECL([], [build_os], [0])dnl
+dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([LT_PATH_LD])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+dnl
+AC_REQUIRE([AC_PROG_LN_S])dnl
+test -z "$LN_S" && LN_S="ln -s"
+_LT_DECL([], [LN_S], [1], [Whether we need soft or hard links])dnl
+dnl
+AC_REQUIRE([LT_CMD_MAX_LEN])dnl
+_LT_DECL([objext], [ac_objext], [0], [Object file suffix (normally "o")])dnl
+_LT_DECL([], [exeext], [0], [Executable file suffix (normally "")])dnl
+dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_CHECK_SHELL_FEATURES])dnl
+m4_require([_LT_CMD_RELOAD])dnl
+m4_require([_LT_CHECK_MAGIC_METHOD])dnl
+m4_require([_LT_CMD_OLD_ARCHIVE])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+
+_LT_CONFIG_LIBTOOL_INIT([
+# See if we are running on zsh, and set the options which allow our
+# commands through without removal of \ escapes INIT.
+if test -n "\${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+fi
+])
+if test -n "${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+fi
+
+_LT_CHECK_OBJDIR
+
+m4_require([_LT_TAG_COMPILER])dnl
+_LT_PROG_ECHO_BACKSLASH
+
+case $host_os in
+aix3*)
+ # AIX sometimes has problems with the GCC collect2 program. For some
+ # reason, if we set the COLLECT_NAMES environment variable, the problems
+ # vanish in a puff of smoke.
+ if test "X${COLLECT_NAMES+set}" != Xset; then
+ COLLECT_NAMES=
+ export COLLECT_NAMES
+ fi
+ ;;
+esac
+
+# Sed substitution that helps us do robust quoting. It backslashifies
+# metacharacters that are still active within double-quoted strings.
+sed_quote_subst='s/\([["`$\\]]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\([["`\\]]\)/\\\1/g'
+
+# Sed substitution to delay expansion of an escaped shell variable in a
+# double_quote_subst'ed string.
+delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
+
+# Sed substitution to delay expansion of an escaped single quote.
+delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
+
+# Sed substitution to avoid accidental globbing in evaled expressions
+no_glob_subst='s/\*/\\\*/g'
+
+# Global variables:
+ofile=libtool
+can_build_shared=yes
+
+# All known linkers require a `.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+
+with_gnu_ld="$lt_cv_prog_gnu_ld"
+
+old_CC="$CC"
+old_CFLAGS="$CFLAGS"
+
+# Set sane defaults for various variables
+test -z "$CC" && CC=cc
+test -z "$LTCC" && LTCC=$CC
+test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
+test -z "$LD" && LD=ld
+test -z "$ac_objext" && ac_objext=o
+
+_LT_CC_BASENAME([$compiler])
+
+# Only perform the check for file, if the check method requires it
+test -z "$MAGIC_CMD" && MAGIC_CMD=file
+case $deplibs_check_method in
+file_magic*)
+ if test "$file_magic_cmd" = '$MAGIC_CMD'; then
+ _LT_PATH_MAGIC
+ fi
+ ;;
+esac
+
+# Use C for the default configuration in the libtool script
+LT_SUPPORTED_TAG([CC])
+_LT_LANG_C_CONFIG
+_LT_LANG_DEFAULT_CONFIG
+_LT_CONFIG_COMMANDS
+])# _LT_SETUP
+
+
+# _LT_PROG_LTMAIN
+# ---------------
+# Note that this code is called both from `configure', and `config.status'
+# now that we use AC_CONFIG_COMMANDS to generate libtool. Notably,
+# `config.status' has no value for ac_aux_dir unless we are using Automake,
+# so we pass a copy along to make sure it has a sensible value anyway.
+m4_defun([_LT_PROG_LTMAIN],
+[m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([ltmain.sh])])dnl
+_LT_CONFIG_LIBTOOL_INIT([ac_aux_dir='$ac_aux_dir'])
+ltmain="$ac_aux_dir/ltmain.sh"
+])# _LT_PROG_LTMAIN
+
+
+
+# So that we can recreate a full libtool script including additional
+# tags, we accumulate the chunks of code to send to AC_CONFIG_COMMANDS
+# in macros and then make a single call at the end using the `libtool'
+# label.
+
+
+# _LT_CONFIG_LIBTOOL_INIT([INIT-COMMANDS])
+# ----------------------------------------
+# Register INIT-COMMANDS to be passed to AC_CONFIG_COMMANDS later.
+m4_define([_LT_CONFIG_LIBTOOL_INIT],
+[m4_ifval([$1],
+ [m4_append([_LT_OUTPUT_LIBTOOL_INIT],
+ [$1
+])])])
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_INIT])
+
+
+# _LT_CONFIG_LIBTOOL([COMMANDS])
+# ------------------------------
+# Register COMMANDS to be passed to AC_CONFIG_COMMANDS later.
+m4_define([_LT_CONFIG_LIBTOOL],
+[m4_ifval([$1],
+ [m4_append([_LT_OUTPUT_LIBTOOL_COMMANDS],
+ [$1
+])])])
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS])
+
+
+# _LT_CONFIG_SAVE_COMMANDS([COMMANDS], [INIT_COMMANDS])
+# -----------------------------------------------------
+m4_defun([_LT_CONFIG_SAVE_COMMANDS],
+[_LT_CONFIG_LIBTOOL([$1])
+_LT_CONFIG_LIBTOOL_INIT([$2])
+])
+
+
+# _LT_FORMAT_COMMENT([COMMENT])
+# -----------------------------
+# Add leading comment marks to the start of each line, and a trailing
+# full-stop to the whole comment if one is not present already.
+m4_define([_LT_FORMAT_COMMENT],
+[m4_ifval([$1], [
+m4_bpatsubst([m4_bpatsubst([$1], [^ *], [# ])],
+ [['`$\]], [\\\&])]m4_bmatch([$1], [[!?.]$], [], [.])
+)])
+
+
+
+
+
+# _LT_DECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION], [IS-TAGGED?])
+# -------------------------------------------------------------------
+# CONFIGNAME is the name given to the value in the libtool script.
+# VARNAME is the (base) name used in the configure script.
+# VALUE may be 0, 1 or 2 for a computed quote escaped value based on
+# VARNAME. Any other value will be used directly.
+m4_define([_LT_DECL],
+[lt_if_append_uniq([lt_decl_varnames], [$2], [, ],
+ [lt_dict_add_subkey([lt_decl_dict], [$2], [libtool_name],
+ [m4_ifval([$1], [$1], [$2])])
+ lt_dict_add_subkey([lt_decl_dict], [$2], [value], [$3])
+ m4_ifval([$4],
+ [lt_dict_add_subkey([lt_decl_dict], [$2], [description], [$4])])
+ lt_dict_add_subkey([lt_decl_dict], [$2],
+ [tagged?], [m4_ifval([$5], [yes], [no])])])
+])
+
+
+# _LT_TAGDECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION])
+# --------------------------------------------------------
+m4_define([_LT_TAGDECL], [_LT_DECL([$1], [$2], [$3], [$4], [yes])])
+
+
+# lt_decl_tag_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_tag_varnames],
+[_lt_decl_filter([tagged?], [yes], $@)])
+
+
+# _lt_decl_filter(SUBKEY, VALUE, [SEPARATOR], [VARNAME1..])
+# ---------------------------------------------------------
+m4_define([_lt_decl_filter],
+[m4_case([$#],
+ [0], [m4_fatal([$0: too few arguments: $#])],
+ [1], [m4_fatal([$0: too few arguments: $#: $1])],
+ [2], [lt_dict_filter([lt_decl_dict], [$1], [$2], [], lt_decl_varnames)],
+ [3], [lt_dict_filter([lt_decl_dict], [$1], [$2], [$3], lt_decl_varnames)],
+ [lt_dict_filter([lt_decl_dict], $@)])[]dnl
+])
+
+
+# lt_decl_quote_varnames([SEPARATOR], [VARNAME1...])
+# --------------------------------------------------
+m4_define([lt_decl_quote_varnames],
+[_lt_decl_filter([value], [1], $@)])
+
+
+# lt_decl_dquote_varnames([SEPARATOR], [VARNAME1...])
+# ---------------------------------------------------
+m4_define([lt_decl_dquote_varnames],
+[_lt_decl_filter([value], [2], $@)])
+
+
+# lt_decl_varnames_tagged([SEPARATOR], [VARNAME1...])
+# ---------------------------------------------------
+m4_define([lt_decl_varnames_tagged],
+[m4_assert([$# <= 2])dnl
+_$0(m4_quote(m4_default([$1], [[, ]])),
+ m4_ifval([$2], [[$2]], [m4_dquote(lt_decl_tag_varnames)]),
+ m4_split(m4_normalize(m4_quote(_LT_TAGS)), [ ]))])
+m4_define([_lt_decl_varnames_tagged],
+[m4_ifval([$3], [lt_combine([$1], [$2], [_], $3)])])
+
+
+# lt_decl_all_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_all_varnames],
+[_$0(m4_quote(m4_default([$1], [[, ]])),
+ m4_if([$2], [],
+ m4_quote(lt_decl_varnames),
+ m4_quote(m4_shift($@))))[]dnl
+])
+m4_define([_lt_decl_all_varnames],
+[lt_join($@, lt_decl_varnames_tagged([$1],
+ lt_decl_tag_varnames([[, ]], m4_shift($@))))dnl
+])
+
+
+# _LT_CONFIG_STATUS_DECLARE([VARNAME])
+# ------------------------------------
+# Quote a variable value, and forward it to `config.status' so that its
+# declaration there will have the same value as in `configure'. VARNAME
+# must have a single quote delimited value for this to work.
+m4_define([_LT_CONFIG_STATUS_DECLARE],
+[$1='`$ECHO "X$][$1" | $Xsed -e "$delay_single_quote_subst"`'])
+
+
+# _LT_CONFIG_STATUS_DECLARATIONS
+# ------------------------------
+# We delimit libtool config variables with single quotes, so when
+# we write them to config.status, we have to be sure to quote all
+# embedded single quotes properly. In configure, this macro expands
+# each variable declared with _LT_DECL (and _LT_TAGDECL) into:
+#
+# <var>='`$ECHO "X$<var>" | $Xsed -e "$delay_single_quote_subst"`'
+m4_defun([_LT_CONFIG_STATUS_DECLARATIONS],
+[m4_foreach([_lt_var], m4_quote(lt_decl_all_varnames),
+ [m4_n([_LT_CONFIG_STATUS_DECLARE(_lt_var)])])])
+
+
+# _LT_LIBTOOL_TAGS
+# ----------------
+# Output comment and list of tags supported by the script
+m4_defun([_LT_LIBTOOL_TAGS],
+[_LT_FORMAT_COMMENT([The names of the tagged configurations supported by this script])dnl
+available_tags="_LT_TAGS"dnl
+])
+
+
+# _LT_LIBTOOL_DECLARE(VARNAME, [TAG])
+# -----------------------------------
+# Extract the dictionary values for VARNAME (optionally with TAG) and
+# expand to a commented shell variable setting:
+#
+# # Some comment about what VAR is for.
+# visible_name=$lt_internal_name
+m4_define([_LT_LIBTOOL_DECLARE],
+[_LT_FORMAT_COMMENT(m4_quote(lt_dict_fetch([lt_decl_dict], [$1],
+ [description])))[]dnl
+m4_pushdef([_libtool_name],
+ m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [libtool_name])))[]dnl
+m4_case(m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [value])),
+ [0], [_libtool_name=[$]$1],
+ [1], [_libtool_name=$lt_[]$1],
+ [2], [_libtool_name=$lt_[]$1],
+ [_libtool_name=lt_dict_fetch([lt_decl_dict], [$1], [value])])[]dnl
+m4_ifval([$2], [_$2])[]m4_popdef([_libtool_name])[]dnl
+])
+
+
+# _LT_LIBTOOL_CONFIG_VARS
+# -----------------------
+# Produce commented declarations of non-tagged libtool config variables
+# suitable for insertion in the LIBTOOL CONFIG section of the `libtool'
+# script. Tagged libtool config variables (even for the LIBTOOL CONFIG
+# section) are produced by _LT_LIBTOOL_TAG_VARS.
+m4_defun([_LT_LIBTOOL_CONFIG_VARS],
+[m4_foreach([_lt_var],
+ m4_quote(_lt_decl_filter([tagged?], [no], [], lt_decl_varnames)),
+ [m4_n([_LT_LIBTOOL_DECLARE(_lt_var)])])])
+
+
+# _LT_LIBTOOL_TAG_VARS(TAG)
+# -------------------------
+m4_define([_LT_LIBTOOL_TAG_VARS],
+[m4_foreach([_lt_var], m4_quote(lt_decl_tag_varnames),
+ [m4_n([_LT_LIBTOOL_DECLARE(_lt_var, [$1])])])])
+
+
+# _LT_TAGVAR(VARNAME, [TAGNAME])
+# ------------------------------
+m4_define([_LT_TAGVAR], [m4_ifval([$2], [$1_$2], [$1])])
+
+
+# _LT_CONFIG_COMMANDS
+# -------------------
+# Send accumulated output to $CONFIG_STATUS. Thanks to the lists of
+# variables for single and double quote escaping we saved from calls
+# to _LT_DECL, we can put quote escaped variables declarations
+# into `config.status', and then the shell code to quote escape them in
+# for loops in `config.status'. Finally, any additional code accumulated
+# from calls to _LT_CONFIG_LIBTOOL_INIT is expanded.
+m4_defun([_LT_CONFIG_COMMANDS],
+[AC_PROVIDE_IFELSE([LT_OUTPUT],
+ dnl If the libtool generation code has been placed in $CONFIG_LT,
+ dnl instead of duplicating it all over again into config.status,
+ dnl then we will have config.status run $CONFIG_LT later, so it
+ dnl needs to know what name is stored there:
+ [AC_CONFIG_COMMANDS([libtool],
+ [$SHELL $CONFIG_LT || AS_EXIT(1)], [CONFIG_LT='$CONFIG_LT'])],
+ dnl If the libtool generation code is destined for config.status,
+ dnl expand the accumulated commands and init code now:
+ [AC_CONFIG_COMMANDS([libtool],
+ [_LT_OUTPUT_LIBTOOL_COMMANDS], [_LT_OUTPUT_LIBTOOL_COMMANDS_INIT])])
+])#_LT_CONFIG_COMMANDS
+
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS_INIT],
+[
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+sed_quote_subst='$sed_quote_subst'
+double_quote_subst='$double_quote_subst'
+delay_variable_subst='$delay_variable_subst'
+_LT_CONFIG_STATUS_DECLARATIONS
+LTCC='$LTCC'
+LTCFLAGS='$LTCFLAGS'
+compiler='$compiler_DEFAULT'
+
+# Quote evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_quote_varnames); do
+ case \`eval \\\\\$ECHO "X\\\\\$\$var"\` in
+ *[[\\\\\\\`\\"\\\$]]*)
+ eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"X\\\$\$var\\" | \\\$Xsed -e \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
+ ;;
+ *)
+ eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+ ;;
+ esac
+done
+
+# Double-quote double-evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_dquote_varnames); do
+ case \`eval \\\\\$ECHO "X\\\\\$\$var"\` in
+ *[[\\\\\\\`\\"\\\$]]*)
+ eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"X\\\$\$var\\" | \\\$Xsed -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
+ ;;
+ *)
+ eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+ ;;
+ esac
+done
+
+# Fix-up fallback echo if it was mangled by the above quoting rules.
+case \$lt_ECHO in
+*'\\\[$]0 --fallback-echo"')dnl "
+ lt_ECHO=\`\$ECHO "X\$lt_ECHO" | \$Xsed -e 's/\\\\\\\\\\\\\\\[$]0 --fallback-echo"\[$]/\[$]0 --fallback-echo"/'\`
+ ;;
+esac
+
+_LT_OUTPUT_LIBTOOL_INIT
+])
+
+
+# LT_OUTPUT
+# ---------
+# This macro allows early generation of the libtool script (before
+# AC_OUTPUT is called), incase it is used in configure for compilation
+# tests.
+AC_DEFUN([LT_OUTPUT],
+[: ${CONFIG_LT=./config.lt}
+AC_MSG_NOTICE([creating $CONFIG_LT])
+cat >"$CONFIG_LT" <<_LTEOF
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate a libtool stub with the current configuration.
+
+lt_cl_silent=false
+SHELL=\${CONFIG_SHELL-$SHELL}
+_LTEOF
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+AS_SHELL_SANITIZE
+_AS_PREPARE
+
+exec AS_MESSAGE_FD>&1
+exec AS_MESSAGE_LOG_FD>>config.log
+{
+ echo
+ AS_BOX([Running $as_me.])
+} >&AS_MESSAGE_LOG_FD
+
+lt_cl_help="\
+\`$as_me' creates a local libtool stub from the current configuration,
+for use in further configure time tests before the real libtool is
+generated.
+
+Usage: $[0] [[OPTIONS]]
+
+ -h, --help print this help, then exit
+ -V, --version print version number, then exit
+ -q, --quiet do not print progress messages
+ -d, --debug don't remove temporary files
+
+Report bugs to <bug-libtool@gnu.org>."
+
+lt_cl_version="\
+m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])config.lt[]dnl
+m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
+configured by $[0], generated by m4_PACKAGE_STRING.
+
+Copyright (C) 2008 Free Software Foundation, Inc.
+This config.lt script is free software; the Free Software Foundation
+gives unlimited permision to copy, distribute and modify it."
+
+while test $[#] != 0
+do
+ case $[1] in
+ --version | --v* | -V )
+ echo "$lt_cl_version"; exit 0 ;;
+ --help | --h* | -h )
+ echo "$lt_cl_help"; exit 0 ;;
+ --debug | --d* | -d )
+ debug=: ;;
+ --quiet | --q* | --silent | --s* | -q )
+ lt_cl_silent=: ;;
+
+ -*) AC_MSG_ERROR([unrecognized option: $[1]
+Try \`$[0] --help' for more information.]) ;;
+
+ *) AC_MSG_ERROR([unrecognized argument: $[1]
+Try \`$[0] --help' for more information.]) ;;
+ esac
+ shift
+done
+
+if $lt_cl_silent; then
+ exec AS_MESSAGE_FD>/dev/null
+fi
+_LTEOF
+
+cat >>"$CONFIG_LT" <<_LTEOF
+_LT_OUTPUT_LIBTOOL_COMMANDS_INIT
+_LTEOF
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+AC_MSG_NOTICE([creating $ofile])
+_LT_OUTPUT_LIBTOOL_COMMANDS
+AS_EXIT(0)
+_LTEOF
+chmod +x "$CONFIG_LT"
+
+# configure is writing to config.log, but config.lt does its own redirection,
+# appending to config.log, which fails on DOS, as config.log is still kept
+# open by configure. Here we exec the FD to /dev/null, effectively closing
+# config.log, so it can be properly (re)opened and appended to by config.lt.
+if test "$no_create" != yes; then
+ lt_cl_success=:
+ test "$silent" = yes &&
+ lt_config_lt_args="$lt_config_lt_args --quiet"
+ exec AS_MESSAGE_LOG_FD>/dev/null
+ $SHELL "$CONFIG_LT" $lt_config_lt_args || lt_cl_success=false
+ exec AS_MESSAGE_LOG_FD>>config.log
+ $lt_cl_success || AS_EXIT(1)
+fi
+])# LT_OUTPUT
+
+
+# _LT_CONFIG(TAG)
+# ---------------
+# If TAG is the built-in tag, create an initial libtool script with a
+# default configuration from the untagged config vars. Otherwise add code
+# to config.status for appending the configuration named by TAG from the
+# matching tagged config vars.
+m4_defun([_LT_CONFIG],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_CONFIG_SAVE_COMMANDS([
+ m4_define([_LT_TAG], m4_if([$1], [], [C], [$1]))dnl
+ m4_if(_LT_TAG, [C], [
+ # See if we are running on zsh, and set the options which allow our
+ # commands through without removal of \ escapes.
+ if test -n "${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+ fi
+
+ cfgfile="${ofile}T"
+ trap "$RM \"$cfgfile\"; exit 1" 1 2 15
+ $RM "$cfgfile"
+
+ cat <<_LT_EOF >> "$cfgfile"
+#! $SHELL
+
+# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
+# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
+# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+# NOTE: Changes made to this file will be lost: look at ltmain.sh.
+#
+_LT_COPYING
+_LT_LIBTOOL_TAGS
+
+# ### BEGIN LIBTOOL CONFIG
+_LT_LIBTOOL_CONFIG_VARS
+_LT_LIBTOOL_TAG_VARS
+# ### END LIBTOOL CONFIG
+
+_LT_EOF
+
+ case $host_os in
+ aix3*)
+ cat <<\_LT_EOF >> "$cfgfile"
+# AIX sometimes has problems with the GCC collect2 program. For some
+# reason, if we set the COLLECT_NAMES environment variable, the problems
+# vanish in a puff of smoke.
+if test "X${COLLECT_NAMES+set}" != Xset; then
+ COLLECT_NAMES=
+ export COLLECT_NAMES
+fi
+_LT_EOF
+ ;;
+ esac
+
+ _LT_PROG_LTMAIN
+
+ # We use sed instead of cat because bash on DJGPP gets confused if
+ # if finds mixed CR/LF and LF-only lines. Since sed operates in
+ # text mode, it properly converts lines to CR/LF. This bash problem
+ # is reportedly fixed, but why not run on old versions too?
+ sed '/^# Generated shell functions inserted here/q' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
+
+ _LT_PROG_XSI_SHELLFNS
+
+ sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
+
+ mv -f "$cfgfile" "$ofile" ||
+ (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
+ chmod +x "$ofile"
+],
+[cat <<_LT_EOF >> "$ofile"
+
+dnl Unfortunately we have to use $1 here, since _LT_TAG is not expanded
+dnl in a comment (ie after a #).
+# ### BEGIN LIBTOOL TAG CONFIG: $1
+_LT_LIBTOOL_TAG_VARS(_LT_TAG)
+# ### END LIBTOOL TAG CONFIG: $1
+_LT_EOF
+])dnl /m4_if
+],
+[m4_if([$1], [], [
+ PACKAGE='$PACKAGE'
+ VERSION='$VERSION'
+ TIMESTAMP='$TIMESTAMP'
+ RM='$RM'
+ ofile='$ofile'], [])
+])dnl /_LT_CONFIG_SAVE_COMMANDS
+])# _LT_CONFIG
+
+
+# LT_SUPPORTED_TAG(TAG)
+# ---------------------
+# Trace this macro to discover what tags are supported by the libtool
+# --tag option, using:
+# autoconf --trace 'LT_SUPPORTED_TAG:$1'
+AC_DEFUN([LT_SUPPORTED_TAG], [])
+
+
+# C support is built-in for now
+m4_define([_LT_LANG_C_enabled], [])
+m4_define([_LT_TAGS], [])
+
+
+# LT_LANG(LANG)
+# -------------
+# Enable libtool support for the given language if not already enabled.
+AC_DEFUN([LT_LANG],
+[AC_BEFORE([$0], [LT_OUTPUT])dnl
+m4_case([$1],
+ [C], [_LT_LANG(C)],
+ [C++], [_LT_LANG(CXX)],
+ [Java], [_LT_LANG(GCJ)],
+ [Fortran 77], [_LT_LANG(F77)],
+ [Fortran], [_LT_LANG(FC)],
+ [Windows Resource], [_LT_LANG(RC)],
+ [m4_ifdef([_LT_LANG_]$1[_CONFIG],
+ [_LT_LANG($1)],
+ [m4_fatal([$0: unsupported language: "$1"])])])dnl
+])# LT_LANG
+
+
+# _LT_LANG(LANGNAME)
+# ------------------
+m4_defun([_LT_LANG],
+[m4_ifdef([_LT_LANG_]$1[_enabled], [],
+ [LT_SUPPORTED_TAG([$1])dnl
+ m4_append([_LT_TAGS], [$1 ])dnl
+ m4_define([_LT_LANG_]$1[_enabled], [])dnl
+ _LT_LANG_$1_CONFIG($1)])dnl
+])# _LT_LANG
+
+
+# _LT_LANG_DEFAULT_CONFIG
+# -----------------------
+m4_defun([_LT_LANG_DEFAULT_CONFIG],
+[AC_PROVIDE_IFELSE([AC_PROG_CXX],
+ [LT_LANG(CXX)],
+ [m4_define([AC_PROG_CXX], defn([AC_PROG_CXX])[LT_LANG(CXX)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_F77],
+ [LT_LANG(F77)],
+ [m4_define([AC_PROG_F77], defn([AC_PROG_F77])[LT_LANG(F77)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_FC],
+ [LT_LANG(FC)],
+ [m4_define([AC_PROG_FC], defn([AC_PROG_FC])[LT_LANG(FC)])])
+
+dnl The call to [A][M_PROG_GCJ] is quoted like that to stop aclocal
+dnl pulling things in needlessly.
+AC_PROVIDE_IFELSE([AC_PROG_GCJ],
+ [LT_LANG(GCJ)],
+ [AC_PROVIDE_IFELSE([A][M_PROG_GCJ],
+ [LT_LANG(GCJ)],
+ [AC_PROVIDE_IFELSE([LT_PROG_GCJ],
+ [LT_LANG(GCJ)],
+ [m4_ifdef([AC_PROG_GCJ],
+ [m4_define([AC_PROG_GCJ], defn([AC_PROG_GCJ])[LT_LANG(GCJ)])])
+ m4_ifdef([A][M_PROG_GCJ],
+ [m4_define([A][M_PROG_GCJ], defn([A][M_PROG_GCJ])[LT_LANG(GCJ)])])
+ m4_ifdef([LT_PROG_GCJ],
+ [m4_define([LT_PROG_GCJ], defn([LT_PROG_GCJ])[LT_LANG(GCJ)])])])])])
+
+AC_PROVIDE_IFELSE([LT_PROG_RC],
+ [LT_LANG(RC)],
+ [m4_define([LT_PROG_RC], defn([LT_PROG_RC])[LT_LANG(RC)])])
+])# _LT_LANG_DEFAULT_CONFIG
+
+# Obsolete macros:
+AU_DEFUN([AC_LIBTOOL_CXX], [LT_LANG(C++)])
+AU_DEFUN([AC_LIBTOOL_F77], [LT_LANG(Fortran 77)])
+AU_DEFUN([AC_LIBTOOL_FC], [LT_LANG(Fortran)])
+AU_DEFUN([AC_LIBTOOL_GCJ], [LT_LANG(Java)])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_CXX], [])
+dnl AC_DEFUN([AC_LIBTOOL_F77], [])
+dnl AC_DEFUN([AC_LIBTOOL_FC], [])
+dnl AC_DEFUN([AC_LIBTOOL_GCJ], [])
+
+
+# _LT_TAG_COMPILER
+# ----------------
+m4_defun([_LT_TAG_COMPILER],
+[AC_REQUIRE([AC_PROG_CC])dnl
+
+_LT_DECL([LTCC], [CC], [1], [A C compiler])dnl
+_LT_DECL([LTCFLAGS], [CFLAGS], [1], [LTCC compiler flags])dnl
+_LT_TAGDECL([CC], [compiler], [1], [A language specific compiler])dnl
+_LT_TAGDECL([with_gcc], [GCC], [0], [Is the compiler the GNU compiler?])dnl
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+])# _LT_TAG_COMPILER
+
+
+# _LT_COMPILER_BOILERPLATE
+# ------------------------
+# Check for compiler boilerplate output or warnings with
+# the simple compiler test code.
+m4_defun([_LT_COMPILER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_compile_test_code" >conftest.$ac_ext
+eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_compiler_boilerplate=`cat conftest.err`
+$RM conftest*
+])# _LT_COMPILER_BOILERPLATE
+
+
+# _LT_LINKER_BOILERPLATE
+# ----------------------
+# Check for linker boilerplate output or warnings with
+# the simple link test code.
+m4_defun([_LT_LINKER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_link_test_code" >conftest.$ac_ext
+eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_linker_boilerplate=`cat conftest.err`
+$RM -r conftest*
+])# _LT_LINKER_BOILERPLATE
+
+# _LT_REQUIRED_DARWIN_CHECKS
+# -------------------------
+m4_defun_once([_LT_REQUIRED_DARWIN_CHECKS],[
+ case $host_os in
+ rhapsody* | darwin*)
+ AC_CHECK_TOOL([DSYMUTIL], [dsymutil], [:])
+ AC_CHECK_TOOL([NMEDIT], [nmedit], [:])
+ AC_CHECK_TOOL([LIPO], [lipo], [:])
+ AC_CHECK_TOOL([OTOOL], [otool], [:])
+ AC_CHECK_TOOL([OTOOL64], [otool64], [:])
+ _LT_DECL([], [DSYMUTIL], [1],
+ [Tool to manipulate archived DWARF debug symbol files on Mac OS X])
+ _LT_DECL([], [NMEDIT], [1],
+ [Tool to change global to local symbols on Mac OS X])
+ _LT_DECL([], [LIPO], [1],
+ [Tool to manipulate fat objects and archives on Mac OS X])
+ _LT_DECL([], [OTOOL], [1],
+ [ldd/readelf like tool for Mach-O binaries on Mac OS X])
+ _LT_DECL([], [OTOOL64], [1],
+ [ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4])
+
+ AC_CACHE_CHECK([for -single_module linker flag],[lt_cv_apple_cc_single_mod],
+ [lt_cv_apple_cc_single_mod=no
+ if test -z "${LT_MULTI_MODULE}"; then
+ # By default we will add the -single_module flag. You can override
+ # by either setting the environment variable LT_MULTI_MODULE
+ # non-empty at configure time, or by adding -multi_module to the
+ # link flags.
+ rm -rf libconftest.dylib*
+ echo "int foo(void){return 1;}" > conftest.c
+ echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+-dynamiclib -Wl,-single_module conftest.c" >&AS_MESSAGE_LOG_FD
+ $LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+ -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
+ _lt_result=$?
+ if test -f libconftest.dylib && test ! -s conftest.err && test $_lt_result = 0; then
+ lt_cv_apple_cc_single_mod=yes
+ else
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ fi
+ rm -rf libconftest.dylib*
+ rm -f conftest.*
+ fi])
+ AC_CACHE_CHECK([for -exported_symbols_list linker flag],
+ [lt_cv_ld_exported_symbols_list],
+ [lt_cv_ld_exported_symbols_list=no
+ save_LDFLAGS=$LDFLAGS
+ echo "_main" > conftest.sym
+ LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+ [lt_cv_ld_exported_symbols_list=yes],
+ [lt_cv_ld_exported_symbols_list=no])
+ LDFLAGS="$save_LDFLAGS"
+ ])
+ case $host_os in
+ rhapsody* | darwin1.[[012]])
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
+ darwin1.*)
+ _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+ darwin*) # darwin 5.x on
+ # if running on 10.5 or later, the deployment target defaults
+ # to the OS version, if on x86, and 10.4, the deployment
+ # target defaults to 10.4. Don't you love it?
+ case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
+ 10.0,*86*-darwin8*|10.0,*-darwin[[91]]*)
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+ 10.[[012]]*)
+ _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+ 10.*)
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+ esac
+ ;;
+ esac
+ if test "$lt_cv_apple_cc_single_mod" = "yes"; then
+ _lt_dar_single_mod='$single_module'
+ fi
+ if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
+ _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
+ else
+ _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
+ fi
+ if test "$DSYMUTIL" != ":"; then
+ _lt_dsymutil='~$DSYMUTIL $lib || :'
+ else
+ _lt_dsymutil=
+ fi
+ ;;
+ esac
+])
+
+
+# _LT_DARWIN_LINKER_FEATURES
+# --------------------------
+# Checks for linker and compiler features on darwin
+m4_defun([_LT_DARWIN_LINKER_FEATURES],
+[
+ m4_require([_LT_REQUIRED_DARWIN_CHECKS])
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_automatic, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=''
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(allow_undefined_flag, $1)="$_lt_dar_allow_undefined"
+ case $cc_basename in
+ ifort*) _lt_dar_can_shared=yes ;;
+ *) _lt_dar_can_shared=$GCC ;;
+ esac
+ if test "$_lt_dar_can_shared" = "yes"; then
+ output_verbose_link_cmd=echo
+ _LT_TAGVAR(archive_cmds, $1)="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+ _LT_TAGVAR(module_cmds, $1)="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+ _LT_TAGVAR(module_expsym_cmds, $1)="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+ m4_if([$1], [CXX],
+[ if test "$lt_cv_apple_cc_single_mod" != "yes"; then
+ _LT_TAGVAR(archive_cmds, $1)="\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dsymutil}"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dar_export_syms}${_lt_dsymutil}"
+ fi
+],[])
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+])
+
+# _LT_SYS_MODULE_PATH_AIX
+# -----------------------
+# Links a minimal program and checks the executable
+# for the system default hardcoded library path. In most cases,
+# this is /usr/lib:/lib, but when the MPI compilers are used
+# the location of the communication and MPI libs are included too.
+# If we don't find anything, use the default library path according
+# to the aix ld manual.
+m4_defun([_LT_SYS_MODULE_PATH_AIX],
+[m4_require([_LT_DECL_SED])dnl
+AC_LINK_IFELSE(AC_LANG_PROGRAM,[
+lt_aix_libpath_sed='
+ /Import File Strings/,/^$/ {
+ /^0/ {
+ s/^0 *\(.*\)$/\1/
+ p
+ }
+ }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+ aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi],[])
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+])# _LT_SYS_MODULE_PATH_AIX
+
+
+# _LT_SHELL_INIT(ARG)
+# -------------------
+m4_define([_LT_SHELL_INIT],
+[ifdef([AC_DIVERSION_NOTICE],
+ [AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)],
+ [AC_DIVERT_PUSH(NOTICE)])
+$1
+AC_DIVERT_POP
+])# _LT_SHELL_INIT
+
+
+# _LT_PROG_ECHO_BACKSLASH
+# -----------------------
+# Add some code to the start of the generated configure script which
+# will find an echo command which doesn't interpret backslashes.
+m4_defun([_LT_PROG_ECHO_BACKSLASH],
+[_LT_SHELL_INIT([
+# Check that we are running under the correct shell.
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+case X$lt_ECHO in
+X*--fallback-echo)
+ # Remove one level of quotation (which was required for Make).
+ ECHO=`echo "$lt_ECHO" | sed 's,\\\\\[$]\\[$]0,'[$]0','`
+ ;;
+esac
+
+ECHO=${lt_ECHO-echo}
+if test "X[$]1" = X--no-reexec; then
+ # Discard the --no-reexec flag, and continue.
+ shift
+elif test "X[$]1" = X--fallback-echo; then
+ # Avoid inline document here, it may be left over
+ :
+elif test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' ; then
+ # Yippee, $ECHO works!
+ :
+else
+ # Restart under the correct shell.
+ exec $SHELL "[$]0" --no-reexec ${1+"[$]@"}
+fi
+
+if test "X[$]1" = X--fallback-echo; then
+ # used as fallback echo
+ shift
+ cat <<_LT_EOF
+[$]*
+_LT_EOF
+ exit 0
+fi
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+if test -z "$lt_ECHO"; then
+ if test "X${echo_test_string+set}" != Xset; then
+ # find a string as large as possible, as long as the shell can cope with it
+ for cmd in 'sed 50q "[$]0"' 'sed 20q "[$]0"' 'sed 10q "[$]0"' 'sed 2q "[$]0"' 'echo test'; do
+ # expected sizes: less than 2Kb, 1Kb, 512 bytes, 16 bytes, ...
+ if { echo_test_string=`eval $cmd`; } 2>/dev/null &&
+ { test "X$echo_test_string" = "X$echo_test_string"; } 2>/dev/null
+ then
+ break
+ fi
+ done
+ fi
+
+ if test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ $ECHO "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ :
+ else
+ # The Solaris, AIX, and Digital Unix default echo programs unquote
+ # backslashes. This makes it impossible to quote backslashes using
+ # echo "$something" | sed 's/\\/\\\\/g'
+ #
+ # So, first we look for a working echo in the user's PATH.
+
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for dir in $PATH /usr/ucb; do
+ IFS="$lt_save_ifs"
+ if (test -f $dir/echo || test -f $dir/echo$ac_exeext) &&
+ test "X`($dir/echo '\t') 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`($dir/echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ ECHO="$dir/echo"
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+
+ if test "X$ECHO" = Xecho; then
+ # We didn't find a better echo, so look for alternatives.
+ if test "X`{ print -r '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ print -r "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ # This shell has a builtin print -r that does the trick.
+ ECHO='print -r'
+ elif { test -f /bin/ksh || test -f /bin/ksh$ac_exeext; } &&
+ test "X$CONFIG_SHELL" != X/bin/ksh; then
+ # If we have ksh, try running configure again with it.
+ ORIGINAL_CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+ export ORIGINAL_CONFIG_SHELL
+ CONFIG_SHELL=/bin/ksh
+ export CONFIG_SHELL
+ exec $CONFIG_SHELL "[$]0" --no-reexec ${1+"[$]@"}
+ else
+ # Try using printf.
+ ECHO='printf %s\n'
+ if test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ $ECHO "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ # Cool, printf works
+ :
+ elif echo_testing_string=`($ORIGINAL_CONFIG_SHELL "[$]0" --fallback-echo '\t') 2>/dev/null` &&
+ test "X$echo_testing_string" = 'X\t' &&
+ echo_testing_string=`($ORIGINAL_CONFIG_SHELL "[$]0" --fallback-echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ CONFIG_SHELL=$ORIGINAL_CONFIG_SHELL
+ export CONFIG_SHELL
+ SHELL="$CONFIG_SHELL"
+ export SHELL
+ ECHO="$CONFIG_SHELL [$]0 --fallback-echo"
+ elif echo_testing_string=`($CONFIG_SHELL "[$]0" --fallback-echo '\t') 2>/dev/null` &&
+ test "X$echo_testing_string" = 'X\t' &&
+ echo_testing_string=`($CONFIG_SHELL "[$]0" --fallback-echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ ECHO="$CONFIG_SHELL [$]0 --fallback-echo"
+ else
+ # maybe with a smaller string...
+ prev=:
+
+ for cmd in 'echo test' 'sed 2q "[$]0"' 'sed 10q "[$]0"' 'sed 20q "[$]0"' 'sed 50q "[$]0"'; do
+ if { test "X$echo_test_string" = "X`eval $cmd`"; } 2>/dev/null
+ then
+ break
+ fi
+ prev="$cmd"
+ done
+
+ if test "$prev" != 'sed 50q "[$]0"'; then
+ echo_test_string=`eval $prev`
+ export echo_test_string
+ exec ${ORIGINAL_CONFIG_SHELL-${CONFIG_SHELL-/bin/sh}} "[$]0" ${1+"[$]@"}
+ else
+ # Oops. We lost completely, so just stick with echo.
+ ECHO=echo
+ fi
+ fi
+ fi
+ fi
+ fi
+fi
+
+# Copy echo and quote the copy suitably for passing to libtool from
+# the Makefile, instead of quoting the original, which is used later.
+lt_ECHO=$ECHO
+if test "X$lt_ECHO" = "X$CONFIG_SHELL [$]0 --fallback-echo"; then
+ lt_ECHO="$CONFIG_SHELL \\\$\[$]0 --fallback-echo"
+fi
+
+AC_SUBST(lt_ECHO)
+])
+_LT_DECL([], [SHELL], [1], [Shell to use when invoking shell scripts])
+_LT_DECL([], [ECHO], [1],
+ [An echo program that does not interpret backslashes])
+])# _LT_PROG_ECHO_BACKSLASH
+
+
+# _LT_ENABLE_LOCK
+# ---------------
+m4_defun([_LT_ENABLE_LOCK],
+[AC_ARG_ENABLE([libtool-lock],
+ [AS_HELP_STRING([--disable-libtool-lock],
+ [avoid locking (might break parallel builds)])])
+test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
+
+# Some flags need to be propagated to the compiler or linker for good
+# libtool support.
+case $host in
+ia64-*-hpux*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ case `/usr/bin/file conftest.$ac_objext` in
+ *ELF-32*)
+ HPUX_IA64_MODE="32"
+ ;;
+ *ELF-64*)
+ HPUX_IA64_MODE="64"
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+*-*-irix6*)
+ # Find out which ABI we are using.
+ echo '[#]line __oline__ "configure"' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ if test "$lt_cv_prog_gnu_ld" = yes; then
+ case `/usr/bin/file conftest.$ac_objext` in
+ *32-bit*)
+ LD="${LD-ld} -melf32bsmip"
+ ;;
+ *N32*)
+ LD="${LD-ld} -melf32bmipn32"
+ ;;
+ *64-bit*)
+ LD="${LD-ld} -melf64bmip"
+ ;;
+ esac
+ else
+ case `/usr/bin/file conftest.$ac_objext` in
+ *32-bit*)
+ LD="${LD-ld} -32"
+ ;;
+ *N32*)
+ LD="${LD-ld} -n32"
+ ;;
+ *64-bit*)
+ LD="${LD-ld} -64"
+ ;;
+ esac
+ fi
+ fi
+ rm -rf conftest*
+ ;;
+
+x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ case `/usr/bin/file conftest.o` in
+ *32-bit*)
+ case $host in
+ x86_64-*kfreebsd*-gnu)
+ LD="${LD-ld} -m elf_i386_fbsd"
+ ;;
+ x86_64-*linux*)
+ LD="${LD-ld} -m elf_i386"
+ ;;
+ ppc64-*linux*|powerpc64-*linux*)
+ LD="${LD-ld} -m elf32ppclinux"
+ ;;
+ s390x-*linux*)
+ LD="${LD-ld} -m elf_s390"
+ ;;
+ sparc64-*linux*)
+ LD="${LD-ld} -m elf32_sparc"
+ ;;
+ esac
+ ;;
+ *64-bit*)
+ case $host in
+ x86_64-*kfreebsd*-gnu)
+ LD="${LD-ld} -m elf_x86_64_fbsd"
+ ;;
+ x86_64-*linux*)
+ LD="${LD-ld} -m elf_x86_64"
+ ;;
+ ppc*-*linux*|powerpc*-*linux*)
+ LD="${LD-ld} -m elf64ppc"
+ ;;
+ s390*-*linux*|s390*-*tpf*)
+ LD="${LD-ld} -m elf64_s390"
+ ;;
+ sparc*-*linux*)
+ LD="${LD-ld} -m elf64_sparc"
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+
+*-*-sco3.2v5*)
+ # On SCO OpenServer 5, we need -belf to get full-featured binaries.
+ SAVE_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -belf"
+ AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf,
+ [AC_LANG_PUSH(C)
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no])
+ AC_LANG_POP])
+ if test x"$lt_cv_cc_needs_belf" != x"yes"; then
+ # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
+ CFLAGS="$SAVE_CFLAGS"
+ fi
+ ;;
+sparc*-*solaris*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ case `/usr/bin/file conftest.o` in
+ *64-bit*)
+ case $lt_cv_prog_gnu_ld in
+ yes*) LD="${LD-ld} -m elf64_sparc" ;;
+ *)
+ if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
+ LD="${LD-ld} -64"
+ fi
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+esac
+
+need_locks="$enable_libtool_lock"
+])# _LT_ENABLE_LOCK
+
+
+# _LT_CMD_OLD_ARCHIVE
+# -------------------
+m4_defun([_LT_CMD_OLD_ARCHIVE],
+[AC_CHECK_TOOL(AR, ar, false)
+test -z "$AR" && AR=ar
+test -z "$AR_FLAGS" && AR_FLAGS=cru
+_LT_DECL([], [AR], [1], [The archiver])
+_LT_DECL([], [AR_FLAGS], [1])
+
+AC_CHECK_TOOL(STRIP, strip, :)
+test -z "$STRIP" && STRIP=:
+_LT_DECL([], [STRIP], [1], [A symbol stripping program])
+
+AC_CHECK_TOOL(RANLIB, ranlib, :)
+test -z "$RANLIB" && RANLIB=:
+_LT_DECL([], [RANLIB], [1],
+ [Commands used to install an old-style archive])
+
+# Determine commands to create old-style static archives.
+old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
+old_postinstall_cmds='chmod 644 $oldlib'
+old_postuninstall_cmds=
+
+if test -n "$RANLIB"; then
+ case $host_os in
+ openbsd*)
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
+ ;;
+ *)
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$oldlib"
+ ;;
+ esac
+ old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
+fi
+_LT_DECL([], [old_postinstall_cmds], [2])
+_LT_DECL([], [old_postuninstall_cmds], [2])
+_LT_TAGDECL([], [old_archive_cmds], [2],
+ [Commands used to build an old-style archive])
+])# _LT_CMD_OLD_ARCHIVE
+
+
+# _LT_COMPILER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+# [OUTPUT-FILE], [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------------------
+# Check whether the given compiler option works
+AC_DEFUN([_LT_COMPILER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+ [$2=no
+ m4_if([$4], , [ac_outfile=conftest.$ac_objext], [ac_outfile=$4])
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+ lt_compiler_flag="$3"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ # The option is referenced via a variable to avoid confusing sed.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:__oline__: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$lt_compile" 2>conftest.err)
+ ac_status=$?
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ echo "$as_me:__oline__: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+ if (exit $ac_status) && test -s "$ac_outfile"; then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings other than the usual output.
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' >conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+ $2=yes
+ fi
+ fi
+ $RM conftest*
+])
+
+if test x"[$]$2" = xyes; then
+ m4_if([$5], , :, [$5])
+else
+ m4_if([$6], , :, [$6])
+fi
+])# _LT_COMPILER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_COMPILER_OPTION], [_LT_COMPILER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_COMPILER_OPTION], [])
+
+
+# _LT_LINKER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+# [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------
+# Check whether the given linker option works
+AC_DEFUN([_LT_LINKER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+ [$2=no
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS $3"
+ echo "$lt_simple_link_test_code" > conftest.$ac_ext
+ if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+ # The linker can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ if test -s conftest.err; then
+ # Append any errors to the config.log.
+ cat conftest.err 1>&AS_MESSAGE_LOG_FD
+ $ECHO "X$_lt_linker_boilerplate" | $Xsed -e '/^$/d' > conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if diff conftest.exp conftest.er2 >/dev/null; then
+ $2=yes
+ fi
+ else
+ $2=yes
+ fi
+ fi
+ $RM -r conftest*
+ LDFLAGS="$save_LDFLAGS"
+])
+
+if test x"[$]$2" = xyes; then
+ m4_if([$4], , :, [$4])
+else
+ m4_if([$5], , :, [$5])
+fi
+])# _LT_LINKER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_LINKER_OPTION], [_LT_LINKER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_LINKER_OPTION], [])
+
+
+# LT_CMD_MAX_LEN
+#---------------
+AC_DEFUN([LT_CMD_MAX_LEN],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+# find the maximum length of command line arguments
+AC_MSG_CHECKING([the maximum length of command line arguments])
+AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
+ i=0
+ teststring="ABCD"
+
+ case $build_os in
+ msdosdjgpp*)
+ # On DJGPP, this test can blow up pretty badly due to problems in libc
+ # (any single argument exceeding 2000 bytes causes a buffer overrun
+ # during glob expansion). Even if it were fixed, the result of this
+ # check would be larger than it should be.
+ lt_cv_sys_max_cmd_len=12288; # 12K is about right
+ ;;
+
+ gnu*)
+ # Under GNU Hurd, this test is not required because there is
+ # no limit to the length of command line arguments.
+ # Libtool will interpret -1 as no limit whatsoever
+ lt_cv_sys_max_cmd_len=-1;
+ ;;
+
+ cygwin* | mingw* | cegcc*)
+ # On Win9x/ME, this test blows up -- it succeeds, but takes
+ # about 5 minutes as the teststring grows exponentially.
+ # Worse, since 9x/ME are not pre-emptively multitasking,
+ # you end up with a "frozen" computer, even though with patience
+ # the test eventually succeeds (with a max line length of 256k).
+ # Instead, let's just punt: use the minimum linelength reported by
+ # all of the supported platforms: 8192 (on NT/2K/XP).
+ lt_cv_sys_max_cmd_len=8192;
+ ;;
+
+ amigaos*)
+ # On AmigaOS with pdksh, this test takes hours, literally.
+ # So we just punt and use a minimum line length of 8192.
+ lt_cv_sys_max_cmd_len=8192;
+ ;;
+
+ netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+ # This has been around since 386BSD, at least. Likely further.
+ if test -x /sbin/sysctl; then
+ lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+ elif test -x /usr/sbin/sysctl; then
+ lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+ else
+ lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs
+ fi
+ # And add a safety zone
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+ ;;
+
+ interix*)
+ # We know the value 262144 and hardcode it with a safety zone (like BSD)
+ lt_cv_sys_max_cmd_len=196608
+ ;;
+
+ osf*)
+ # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
+ # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
+ # nice to cause kernel panics so lets avoid the loop below.
+ # First set a reasonable default.
+ lt_cv_sys_max_cmd_len=16384
+ #
+ if test -x /sbin/sysconfig; then
+ case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
+ *1*) lt_cv_sys_max_cmd_len=-1 ;;
+ esac
+ fi
+ ;;
+ sco3.2v5*)
+ lt_cv_sys_max_cmd_len=102400
+ ;;
+ sysv5* | sco5v6* | sysv4.2uw2*)
+ kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
+ if test -n "$kargmax"; then
+ lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[[ ]]//'`
+ else
+ lt_cv_sys_max_cmd_len=32768
+ fi
+ ;;
+ *)
+ lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
+ if test -n "$lt_cv_sys_max_cmd_len"; then
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+ else
+ # Make teststring a little bigger before we do anything with it.
+ # a 1K string should be a reasonable start.
+ for i in 1 2 3 4 5 6 7 8 ; do
+ teststring=$teststring$teststring
+ done
+ SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
+ # If test is not a shell built-in, we'll probably end up computing a
+ # maximum length that is only half of the actual maximum length, but
+ # we can't tell.
+ while { test "X"`$SHELL [$]0 --fallback-echo "X$teststring$teststring" 2>/dev/null` \
+ = "XX$teststring$teststring"; } >/dev/null 2>&1 &&
+ test $i != 17 # 1/2 MB should be enough
+ do
+ i=`expr $i + 1`
+ teststring=$teststring$teststring
+ done
+ # Only check the string length outside the loop.
+ lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
+ teststring=
+ # Add a significant safety factor because C++ compilers can tack on
+ # massive amounts of additional arguments before passing them to the
+ # linker. It appears as though 1/2 is a usable value.
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
+ fi
+ ;;
+ esac
+])
+if test -n $lt_cv_sys_max_cmd_len ; then
+ AC_MSG_RESULT($lt_cv_sys_max_cmd_len)
+else
+ AC_MSG_RESULT(none)
+fi
+max_cmd_len=$lt_cv_sys_max_cmd_len
+_LT_DECL([], [max_cmd_len], [0],
+ [What is the maximum length of a command?])
+])# LT_CMD_MAX_LEN
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_SYS_MAX_CMD_LEN], [LT_CMD_MAX_LEN])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_SYS_MAX_CMD_LEN], [])
+
+
+# _LT_HEADER_DLFCN
+# ----------------
+m4_defun([_LT_HEADER_DLFCN],
+[AC_CHECK_HEADERS([dlfcn.h], [], [], [AC_INCLUDES_DEFAULT])dnl
+])# _LT_HEADER_DLFCN
+
+
+# _LT_TRY_DLOPEN_SELF (ACTION-IF-TRUE, ACTION-IF-TRUE-W-USCORE,
+# ACTION-IF-FALSE, ACTION-IF-CROSS-COMPILING)
+# ----------------------------------------------------------------
+m4_defun([_LT_TRY_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "$cross_compiling" = yes; then :
+ [$4]
+else
+ lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+ lt_status=$lt_dlunknown
+ cat > conftest.$ac_ext <<_LT_EOF
+[#line __oline__ "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+# define LT_DLGLOBAL RTLD_GLOBAL
+#else
+# ifdef DL_GLOBAL
+# define LT_DLGLOBAL DL_GLOBAL
+# else
+# define LT_DLGLOBAL 0
+# endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+ find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+# ifdef RTLD_LAZY
+# define LT_DLLAZY_OR_NOW RTLD_LAZY
+# else
+# ifdef DL_LAZY
+# define LT_DLLAZY_OR_NOW DL_LAZY
+# else
+# ifdef RTLD_NOW
+# define LT_DLLAZY_OR_NOW RTLD_NOW
+# else
+# ifdef DL_NOW
+# define LT_DLLAZY_OR_NOW DL_NOW
+# else
+# define LT_DLLAZY_OR_NOW 0
+# endif
+# endif
+# endif
+# endif
+#endif
+
+void fnord() { int i=42;}
+int main ()
+{
+ void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+ int status = $lt_dlunknown;
+
+ if (self)
+ {
+ if (dlsym (self,"fnord")) status = $lt_dlno_uscore;
+ else if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore;
+ /* dlclose (self); */
+ }
+ else
+ puts (dlerror ());
+
+ return status;
+}]
+_LT_EOF
+ if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} 2>/dev/null; then
+ (./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null
+ lt_status=$?
+ case x$lt_status in
+ x$lt_dlno_uscore) $1 ;;
+ x$lt_dlneed_uscore) $2 ;;
+ x$lt_dlunknown|x*) $3 ;;
+ esac
+ else :
+ # compilation failed
+ $3
+ fi
+fi
+rm -fr conftest*
+])# _LT_TRY_DLOPEN_SELF
+
+
+# LT_SYS_DLOPEN_SELF
+# ------------------
+AC_DEFUN([LT_SYS_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "x$enable_dlopen" != xyes; then
+ enable_dlopen=unknown
+ enable_dlopen_self=unknown
+ enable_dlopen_self_static=unknown
+else
+ lt_cv_dlopen=no
+ lt_cv_dlopen_libs=
+
+ case $host_os in
+ beos*)
+ lt_cv_dlopen="load_add_on"
+ lt_cv_dlopen_libs=
+ lt_cv_dlopen_self=yes
+ ;;
+
+ mingw* | pw32* | cegcc*)
+ lt_cv_dlopen="LoadLibrary"
+ lt_cv_dlopen_libs=
+ ;;
+
+ cygwin*)
+ lt_cv_dlopen="dlopen"
+ lt_cv_dlopen_libs=
+ ;;
+
+ darwin*)
+ # if libdl is installed we need to link against it
+ AC_CHECK_LIB([dl], [dlopen],
+ [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],[
+ lt_cv_dlopen="dyld"
+ lt_cv_dlopen_libs=
+ lt_cv_dlopen_self=yes
+ ])
+ ;;
+
+ *)
+ AC_CHECK_FUNC([shl_load],
+ [lt_cv_dlopen="shl_load"],
+ [AC_CHECK_LIB([dld], [shl_load],
+ [lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"],
+ [AC_CHECK_FUNC([dlopen],
+ [lt_cv_dlopen="dlopen"],
+ [AC_CHECK_LIB([dl], [dlopen],
+ [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],
+ [AC_CHECK_LIB([svld], [dlopen],
+ [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"],
+ [AC_CHECK_LIB([dld], [dld_link],
+ [lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"])
+ ])
+ ])
+ ])
+ ])
+ ])
+ ;;
+ esac
+
+ if test "x$lt_cv_dlopen" != xno; then
+ enable_dlopen=yes
+ else
+ enable_dlopen=no
+ fi
+
+ case $lt_cv_dlopen in
+ dlopen)
+ save_CPPFLAGS="$CPPFLAGS"
+ test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+ save_LDFLAGS="$LDFLAGS"
+ wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+ save_LIBS="$LIBS"
+ LIBS="$lt_cv_dlopen_libs $LIBS"
+
+ AC_CACHE_CHECK([whether a program can dlopen itself],
+ lt_cv_dlopen_self, [dnl
+ _LT_TRY_DLOPEN_SELF(
+ lt_cv_dlopen_self=yes, lt_cv_dlopen_self=yes,
+ lt_cv_dlopen_self=no, lt_cv_dlopen_self=cross)
+ ])
+
+ if test "x$lt_cv_dlopen_self" = xyes; then
+ wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
+ AC_CACHE_CHECK([whether a statically linked program can dlopen itself],
+ lt_cv_dlopen_self_static, [dnl
+ _LT_TRY_DLOPEN_SELF(
+ lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=yes,
+ lt_cv_dlopen_self_static=no, lt_cv_dlopen_self_static=cross)
+ ])
+ fi
+
+ CPPFLAGS="$save_CPPFLAGS"
+ LDFLAGS="$save_LDFLAGS"
+ LIBS="$save_LIBS"
+ ;;
+ esac
+
+ case $lt_cv_dlopen_self in
+ yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+ *) enable_dlopen_self=unknown ;;
+ esac
+
+ case $lt_cv_dlopen_self_static in
+ yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+ *) enable_dlopen_self_static=unknown ;;
+ esac
+fi
+_LT_DECL([dlopen_support], [enable_dlopen], [0],
+ [Whether dlopen is supported])
+_LT_DECL([dlopen_self], [enable_dlopen_self], [0],
+ [Whether dlopen of programs is supported])
+_LT_DECL([dlopen_self_static], [enable_dlopen_self_static], [0],
+ [Whether dlopen of statically linked programs is supported])
+])# LT_SYS_DLOPEN_SELF
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_DLOPEN_SELF], [LT_SYS_DLOPEN_SELF])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN_SELF], [])
+
+
+# _LT_COMPILER_C_O([TAGNAME])
+# ---------------------------
+# Check to see if options -c and -o are simultaneously supported by compiler.
+# This macro does not hard code the compiler like AC_PROG_CC_C_O.
+m4_defun([_LT_COMPILER_C_O],
+[m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_CACHE_CHECK([if $compiler supports -c -o file.$ac_objext],
+ [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)],
+ [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=no
+ $RM -r conftest 2>/dev/null
+ mkdir conftest
+ cd conftest
+ mkdir out
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ lt_compiler_flag="-o out/conftest2.$ac_objext"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:__oline__: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$lt_compile" 2>out/conftest.err)
+ ac_status=$?
+ cat out/conftest.err >&AS_MESSAGE_LOG_FD
+ echo "$as_me:__oline__: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+ if (exit $ac_status) && test -s out/conftest2.$ac_objext
+ then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' > out/conftest.exp
+ $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+ if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+ _LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+ fi
+ fi
+ chmod u+w . 2>&AS_MESSAGE_LOG_FD
+ $RM conftest*
+ # SGI C++ compiler will create directory out/ii_files/ for
+ # template instantiation
+ test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+ $RM out/* && rmdir out
+ cd ..
+ $RM -r conftest
+ $RM conftest*
+])
+_LT_TAGDECL([compiler_c_o], [lt_cv_prog_compiler_c_o], [1],
+ [Does compiler simultaneously support -c and -o options?])
+])# _LT_COMPILER_C_O
+
+
+# _LT_COMPILER_FILE_LOCKS([TAGNAME])
+# ----------------------------------
+# Check to see if we can do hard links to lock some files if needed
+m4_defun([_LT_COMPILER_FILE_LOCKS],
+[m4_require([_LT_ENABLE_LOCK])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_COMPILER_C_O([$1])
+
+hard_links="nottested"
+if test "$_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)" = no && test "$need_locks" != no; then
+ # do not overwrite the value of need_locks provided by the user
+ AC_MSG_CHECKING([if we can lock with hard links])
+ hard_links=yes
+ $RM conftest*
+ ln conftest.a conftest.b 2>/dev/null && hard_links=no
+ touch conftest.a
+ ln conftest.a conftest.b 2>&5 || hard_links=no
+ ln conftest.a conftest.b 2>/dev/null && hard_links=no
+ AC_MSG_RESULT([$hard_links])
+ if test "$hard_links" = no; then
+ AC_MSG_WARN([`$CC' does not support `-c -o', so `make -j' may be unsafe])
+ need_locks=warn
+ fi
+else
+ need_locks=no
+fi
+_LT_DECL([], [need_locks], [1], [Must we lock files when doing compilation?])
+])# _LT_COMPILER_FILE_LOCKS
+
+
+# _LT_CHECK_OBJDIR
+# ----------------
+m4_defun([_LT_CHECK_OBJDIR],
+[AC_CACHE_CHECK([for objdir], [lt_cv_objdir],
+[rm -f .libs 2>/dev/null
+mkdir .libs 2>/dev/null
+if test -d .libs; then
+ lt_cv_objdir=.libs
+else
+ # MS-DOS does not allow filenames that begin with a dot.
+ lt_cv_objdir=_libs
+fi
+rmdir .libs 2>/dev/null])
+objdir=$lt_cv_objdir
+_LT_DECL([], [objdir], [0],
+ [The name of the directory that contains temporary libtool files])dnl
+m4_pattern_allow([LT_OBJDIR])dnl
+AC_DEFINE_UNQUOTED(LT_OBJDIR, "$lt_cv_objdir/",
+ [Define to the sub-directory in which libtool stores uninstalled libraries.])
+])# _LT_CHECK_OBJDIR
+
+
+# _LT_LINKER_HARDCODE_LIBPATH([TAGNAME])
+# --------------------------------------
+# Check hardcoding attributes.
+m4_defun([_LT_LINKER_HARDCODE_LIBPATH],
+[AC_MSG_CHECKING([how to hardcode library paths into programs])
+_LT_TAGVAR(hardcode_action, $1)=
+if test -n "$_LT_TAGVAR(hardcode_libdir_flag_spec, $1)" ||
+ test -n "$_LT_TAGVAR(runpath_var, $1)" ||
+ test "X$_LT_TAGVAR(hardcode_automatic, $1)" = "Xyes" ; then
+
+ # We can hardcode non-existent directories.
+ if test "$_LT_TAGVAR(hardcode_direct, $1)" != no &&
+ # If the only mechanism to avoid hardcoding is shlibpath_var, we
+ # have to relink, otherwise we might link with an installed library
+ # when we should be linking with a yet-to-be-installed one
+ ## test "$_LT_TAGVAR(hardcode_shlibpath_var, $1)" != no &&
+ test "$_LT_TAGVAR(hardcode_minus_L, $1)" != no; then
+ # Linking always hardcodes the temporary library directory.
+ _LT_TAGVAR(hardcode_action, $1)=relink
+ else
+ # We can link without hardcoding, and we can hardcode nonexisting dirs.
+ _LT_TAGVAR(hardcode_action, $1)=immediate
+ fi
+else
+ # We cannot hardcode anything, or else we can only hardcode existing
+ # directories.
+ _LT_TAGVAR(hardcode_action, $1)=unsupported
+fi
+AC_MSG_RESULT([$_LT_TAGVAR(hardcode_action, $1)])
+
+if test "$_LT_TAGVAR(hardcode_action, $1)" = relink ||
+ test "$_LT_TAGVAR(inherit_rpath, $1)" = yes; then
+ # Fast installation is not supported
+ enable_fast_install=no
+elif test "$shlibpath_overrides_runpath" = yes ||
+ test "$enable_shared" = no; then
+ # Fast installation is not necessary
+ enable_fast_install=needless
+fi
+_LT_TAGDECL([], [hardcode_action], [0],
+ [How to hardcode a shared library path into an executable])
+])# _LT_LINKER_HARDCODE_LIBPATH
+
+
+# _LT_CMD_STRIPLIB
+# ----------------
+m4_defun([_LT_CMD_STRIPLIB],
+[m4_require([_LT_DECL_EGREP])
+striplib=
+old_striplib=
+AC_MSG_CHECKING([whether stripping libraries is possible])
+if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+ test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
+ test -z "$striplib" && striplib="$STRIP --strip-unneeded"
+ AC_MSG_RESULT([yes])
+else
+# FIXME - insert some real tests, host_os isn't really good enough
+ case $host_os in
+ darwin*)
+ if test -n "$STRIP" ; then
+ striplib="$STRIP -x"
+ old_striplib="$STRIP -S"
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ fi
+ ;;
+ *)
+ AC_MSG_RESULT([no])
+ ;;
+ esac
+fi
+_LT_DECL([], [old_striplib], [1], [Commands to strip libraries])
+_LT_DECL([], [striplib], [1])
+])# _LT_CMD_STRIPLIB
+
+
+# _LT_SYS_DYNAMIC_LINKER([TAG])
+# -----------------------------
+# PORTME Fill in your ld.so characteristics
+m4_defun([_LT_SYS_DYNAMIC_LINKER],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_OBJDUMP])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_MSG_CHECKING([dynamic linker characteristics])
+m4_if([$1],
+ [], [
+if test "$GCC" = yes; then
+ case $host_os in
+ darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
+ *) lt_awk_arg="/^libraries:/" ;;
+ esac
+ lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e "s,=/,/,g"`
+ if $ECHO "$lt_search_path_spec" | $GREP ';' >/dev/null ; then
+ # if the path contains ";" then we assume it to be the separator
+ # otherwise default to the standard path separator (i.e. ":") - it is
+ # assumed that no part of a normal pathname contains ";" but that should
+ # okay in the real world where ";" in dirpaths is itself problematic.
+ lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ # Ok, now we have the path, separated by spaces, we can step through it
+ # and add multilib dir if necessary.
+ lt_tmp_lt_search_path_spec=
+ lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
+ for lt_sys_path in $lt_search_path_spec; do
+ if test -d "$lt_sys_path/$lt_multi_os_dir"; then
+ lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
+ else
+ test -d "$lt_sys_path" && \
+ lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
+ fi
+ done
+ lt_search_path_spec=`$ECHO $lt_tmp_lt_search_path_spec | awk '
+BEGIN {RS=" "; FS="/|\n";} {
+ lt_foo="";
+ lt_count=0;
+ for (lt_i = NF; lt_i > 0; lt_i--) {
+ if ($lt_i != "" && $lt_i != ".") {
+ if ($lt_i == "..") {
+ lt_count++;
+ } else {
+ if (lt_count == 0) {
+ lt_foo="/" $lt_i lt_foo;
+ } else {
+ lt_count--;
+ }
+ }
+ }
+ }
+ if (lt_foo != "") { lt_freq[[lt_foo]]++; }
+ if (lt_freq[[lt_foo]] == 1) { print lt_foo; }
+}'`
+ sys_lib_search_path_spec=`$ECHO $lt_search_path_spec`
+else
+ sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+fi])
+library_names_spec=
+libname_spec='lib$name'
+soname_spec=
+shrext_cmds=".so"
+postinstall_cmds=
+postuninstall_cmds=
+finish_cmds=
+finish_eval=
+shlibpath_var=
+shlibpath_overrides_runpath=unknown
+version_type=none
+dynamic_linker="$host_os ld.so"
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+need_lib_prefix=unknown
+hardcode_into_libs=no
+
+# when you set need_version to no, make sure it does not cause -set_version
+# flags to be left without arguments
+need_version=unknown
+
+case $host_os in
+aix3*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
+ shlibpath_var=LIBPATH
+
+ # AIX 3 has no versioning support, so we append a major version to the name.
+ soname_spec='${libname}${release}${shared_ext}$major'
+ ;;
+
+aix[[4-9]]*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ hardcode_into_libs=yes
+ if test "$host_cpu" = ia64; then
+ # AIX 5 supports IA64
+ library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ else
+ # With GCC up to 2.95.x, collect2 would create an import file
+ # for dependence libraries. The import file would start with
+ # the line `#! .'. This would cause the generated library to
+ # depend on `.', always an invalid library. This was fixed in
+ # development snapshots of GCC prior to 3.0.
+ case $host_os in
+ aix4 | aix4.[[01]] | aix4.[[01]].*)
+ if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
+ echo ' yes '
+ echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
+ :
+ else
+ can_build_shared=no
+ fi
+ ;;
+ esac
+ # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
+ # soname into executable. Probably we can add versioning support to
+ # collect2, so additional links can be useful in future.
+ if test "$aix_use_runtimelinking" = yes; then
+ # If using run time linking (on AIX 4.2 or later) use lib<name>.so
+ # instead of lib<name>.a to let people know that these are not
+ # typical AIX shared libraries.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ else
+ # We preserve .a as extension for shared libraries through AIX4.2
+ # and later when we are not doing run time linking.
+ library_names_spec='${libname}${release}.a $libname.a'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ fi
+ shlibpath_var=LIBPATH
+ fi
+ ;;
+
+amigaos*)
+ case $host_cpu in
+ powerpc)
+ # Since July 2007 AmigaOS4 officially supports .so libraries.
+ # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ ;;
+ m68k)
+ library_names_spec='$libname.ixlibrary $libname.a'
+ # Create ${libname}_ixlibrary.a entries in /sys/libs.
+ finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`$ECHO "X$lib" | $Xsed -e '\''s%^.*/\([[^/]]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
+ ;;
+ esac
+ ;;
+
+beos*)
+ library_names_spec='${libname}${shared_ext}'
+ dynamic_linker="$host_os ld.so"
+ shlibpath_var=LIBRARY_PATH
+ ;;
+
+bsdi[[45]]*)
+ version_type=linux
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+ sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+ # the default ld.so.conf also contains /usr/contrib/lib and
+ # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
+ # libtool to hard-code these into programs
+ ;;
+
+cygwin* | mingw* | pw32* | cegcc*)
+ version_type=windows
+ shrext_cmds=".dll"
+ need_version=no
+ need_lib_prefix=no
+
+ case $GCC,$host_os in
+ yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
+ library_names_spec='$libname.dll.a'
+ # DLL is installed to $(libdir)/../bin by postinstall_cmds
+ postinstall_cmds='base_file=`basename \${file}`~
+ dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+ dldir=$destdir/`dirname \$dlpath`~
+ test -d \$dldir || mkdir -p \$dldir~
+ $install_prog $dir/$dlname \$dldir/$dlname~
+ chmod a+x \$dldir/$dlname~
+ if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
+ eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
+ fi'
+ postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+ dlpath=$dir/\$dldll~
+ $RM \$dlpath'
+ shlibpath_overrides_runpath=yes
+
+ case $host_os in
+ cygwin*)
+ # Cygwin DLLs use 'cyg' prefix rather than 'lib'
+ soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+ sys_lib_search_path_spec="/usr/lib /lib/w32api /lib /usr/local/lib"
+ ;;
+ mingw* | cegcc*)
+ # MinGW DLLs use traditional 'lib' prefix
+ soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+ sys_lib_search_path_spec=`$CC -print-search-dirs | $GREP "^libraries:" | $SED -e "s/^libraries://" -e "s,=/,/,g"`
+ if $ECHO "$sys_lib_search_path_spec" | [$GREP ';[c-zC-Z]:/' >/dev/null]; then
+ # It is most probably a Windows format PATH printed by
+ # mingw gcc, but we are running on Cygwin. Gcc prints its search
+ # path with ; separators, and with drive letters. We can handle the
+ # drive letters (cygwin fileutils understands them), so leave them,
+ # especially as we might pass files found there to a mingw objdump,
+ # which wouldn't understand a cygwinified path. Ahh.
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ ;;
+ pw32*)
+ # pw32 DLLs use 'pw' prefix rather than 'lib'
+ library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+ ;;
+ esac
+ ;;
+
+ *)
+ library_names_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext} $libname.lib'
+ ;;
+ esac
+ dynamic_linker='Win32 ld.exe'
+ # FIXME: first we should search . and the directory the executable is in
+ shlibpath_var=PATH
+ ;;
+
+darwin* | rhapsody*)
+ dynamic_linker="$host_os dyld"
+ version_type=darwin
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
+ soname_spec='${libname}${release}${major}$shared_ext'
+ shlibpath_overrides_runpath=yes
+ shlibpath_var=DYLD_LIBRARY_PATH
+ shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
+m4_if([$1], [],[
+ sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"])
+ sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
+ ;;
+
+dgux*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ ;;
+
+freebsd1*)
+ dynamic_linker=no
+ ;;
+
+freebsd* | dragonfly*)
+ # DragonFly does not have aout. When/if they implement a new
+ # versioning mechanism, adjust this.
+ if test -x /usr/bin/objformat; then
+ objformat=`/usr/bin/objformat`
+ else
+ case $host_os in
+ freebsd[[123]]*) objformat=aout ;;
+ *) objformat=elf ;;
+ esac
+ fi
+ version_type=freebsd-$objformat
+ case $version_type in
+ freebsd-elf*)
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+ need_version=no
+ need_lib_prefix=no
+ ;;
+ freebsd-*)
+ library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
+ need_version=yes
+ ;;
+ esac
+ shlibpath_var=LD_LIBRARY_PATH
+ case $host_os in
+ freebsd2*)
+ shlibpath_overrides_runpath=yes
+ ;;
+ freebsd3.[[01]]* | freebsdelf3.[[01]]*)
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+ freebsd3.[[2-9]]* | freebsdelf3.[[2-9]]* | \
+ freebsd4.[[0-5]] | freebsdelf4.[[0-5]] | freebsd4.1.1 | freebsdelf4.1.1)
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+ *) # from 4.6 on, and DragonFly
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+ esac
+ ;;
+
+gnu*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ hardcode_into_libs=yes
+ ;;
+
+hpux9* | hpux10* | hpux11*)
+ # Give a soname corresponding to the major version so that dld.sl refuses to
+ # link against other versions.
+ version_type=sunos
+ need_lib_prefix=no
+ need_version=no
+ case $host_cpu in
+ ia64*)
+ shrext_cmds='.so'
+ hardcode_into_libs=yes
+ dynamic_linker="$host_os dld.so"
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ if test "X$HPUX_IA64_MODE" = X32; then
+ sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
+ else
+ sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
+ fi
+ sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+ ;;
+ hppa*64*)
+ shrext_cmds='.sl'
+ hardcode_into_libs=yes
+ dynamic_linker="$host_os dld.sl"
+ shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
+ shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
+ sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+ ;;
+ *)
+ shrext_cmds='.sl'
+ dynamic_linker="$host_os dld.sl"
+ shlibpath_var=SHLIB_PATH
+ shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ ;;
+ esac
+ # HP-UX runs *really* slowly unless shared libraries are mode 555.
+ postinstall_cmds='chmod 555 $lib'
+ ;;
+
+interix[[3-9]]*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+
+irix5* | irix6* | nonstopux*)
+ case $host_os in
+ nonstopux*) version_type=nonstopux ;;
+ *)
+ if test "$lt_cv_prog_gnu_ld" = yes; then
+ version_type=linux
+ else
+ version_type=irix
+ fi ;;
+ esac
+ need_lib_prefix=no
+ need_version=no
+ soname_spec='${libname}${release}${shared_ext}$major'
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
+ case $host_os in
+ irix5* | nonstopux*)
+ libsuff= shlibsuff=
+ ;;
+ *)
+ case $LD in # libtool.m4 will add one of these switches to LD
+ *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
+ libsuff= shlibsuff= libmagic=32-bit;;
+ *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
+ libsuff=32 shlibsuff=N32 libmagic=N32;;
+ *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
+ libsuff=64 shlibsuff=64 libmagic=64-bit;;
+ *) libsuff= shlibsuff= libmagic=never-match;;
+ esac
+ ;;
+ esac
+ shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
+ shlibpath_overrides_runpath=no
+ sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+ sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+ hardcode_into_libs=yes
+ ;;
+
+# No shared lib support for Linux oldld, aout, or coff.
+linux*oldld* | linux*aout* | linux*coff*)
+ dynamic_linker=no
+ ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ # Some binutils ld are patched to set DT_RUNPATH
+ save_LDFLAGS=$LDFLAGS
+ save_libdir=$libdir
+ eval "libdir=/foo; wl=\"$_LT_TAGVAR(lt_prog_compiler_wl, $1)\"; \
+ LDFLAGS=\"\$LDFLAGS $_LT_TAGVAR(hardcode_libdir_flag_spec, $1)\""
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+ [AS_IF([ ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null],
+ [shlibpath_overrides_runpath=yes])])
+ LDFLAGS=$save_LDFLAGS
+ libdir=$save_libdir
+
+ # This implies no fast_install, which is unacceptable.
+ # Some rework will be needed to allow for fast_install
+ # before this can be enabled.
+ hardcode_into_libs=yes
+
+ # Append ld.so.conf contents to the search path
+ if test -f /etc/ld.so.conf; then
+ lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;/^$/d' | tr '\n' ' '`
+ sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+ fi
+
+ # We used to test for /lib/ld.so.1 and disable shared libraries on
+ # powerpc, because MkLinux only supported shared libraries with the
+ # GNU dynamic linker. Since this was broken with cross compilers,
+ # most powerpc-linux boxes support dynamic linking these days and
+ # people can always --disable-shared, the test was removed, and we
+ # assume the GNU/Linux dynamic linker is in use.
+ dynamic_linker='GNU/Linux ld.so'
+ ;;
+
+netbsdelf*-gnu)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ dynamic_linker='NetBSD ld.elf_so'
+ ;;
+
+netbsd*)
+ version_type=sunos
+ need_lib_prefix=no
+ need_version=no
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+ dynamic_linker='NetBSD (a.out) ld.so'
+ else
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ dynamic_linker='NetBSD ld.elf_so'
+ fi
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+
+newsos6)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ ;;
+
+*nto* | *qnx*)
+ version_type=qnx
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ dynamic_linker='ldqnx.so'
+ ;;
+
+openbsd*)
+ version_type=sunos
+ sys_lib_dlsearch_path_spec="/usr/lib"
+ need_lib_prefix=no
+ # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
+ case $host_os in
+ openbsd3.3 | openbsd3.3.*) need_version=yes ;;
+ *) need_version=no ;;
+ esac
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ case $host_os in
+ openbsd2.[[89]] | openbsd2.[[89]].*)
+ shlibpath_overrides_runpath=no
+ ;;
+ *)
+ shlibpath_overrides_runpath=yes
+ ;;
+ esac
+ else
+ shlibpath_overrides_runpath=yes
+ fi
+ ;;
+
+os2*)
+ libname_spec='$name'
+ shrext_cmds=".dll"
+ need_lib_prefix=no
+ library_names_spec='$libname${shared_ext} $libname.a'
+ dynamic_linker='OS/2 ld.exe'
+ shlibpath_var=LIBPATH
+ ;;
+
+osf3* | osf4* | osf5*)
+ version_type=osf
+ need_lib_prefix=no
+ need_version=no
+ soname_spec='${libname}${release}${shared_ext}$major'
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+ sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+ ;;
+
+rdos*)
+ dynamic_linker=no
+ ;;
+
+solaris*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ # ldd complains unless libraries are executable
+ postinstall_cmds='chmod +x $lib'
+ ;;
+
+sunos4*)
+ version_type=sunos
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ if test "$with_gnu_ld" = yes; then
+ need_lib_prefix=no
+ fi
+ need_version=yes
+ ;;
+
+sysv4 | sysv4.3*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ case $host_vendor in
+ sni)
+ shlibpath_overrides_runpath=no
+ need_lib_prefix=no
+ runpath_var=LD_RUN_PATH
+ ;;
+ siemens)
+ need_lib_prefix=no
+ ;;
+ motorola)
+ need_lib_prefix=no
+ need_version=no
+ shlibpath_overrides_runpath=no
+ sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+ ;;
+ esac
+ ;;
+
+sysv4*MP*)
+ if test -d /usr/nec ;then
+ version_type=linux
+ library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
+ soname_spec='$libname${shared_ext}.$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ fi
+ ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+ version_type=freebsd-elf
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ if test "$with_gnu_ld" = yes; then
+ sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
+ else
+ sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
+ case $host_os in
+ sco3.2v5*)
+ sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
+ ;;
+ esac
+ fi
+ sys_lib_dlsearch_path_spec='/usr/lib'
+ ;;
+
+tpf*)
+ # TPF is a cross-target only. Preferred cross-host = GNU/Linux.
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+
+uts4*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ ;;
+
+*)
+ dynamic_linker=no
+ ;;
+esac
+AC_MSG_RESULT([$dynamic_linker])
+test "$dynamic_linker" = no && can_build_shared=no
+
+variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
+if test "$GCC" = yes; then
+ variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
+fi
+
+if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
+ sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
+fi
+if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
+ sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
+fi
+
+_LT_DECL([], [variables_saved_for_relink], [1],
+ [Variables whose values should be saved in libtool wrapper scripts and
+ restored at link time])
+_LT_DECL([], [need_lib_prefix], [0],
+ [Do we need the "lib" prefix for modules?])
+_LT_DECL([], [need_version], [0], [Do we need a version for libraries?])
+_LT_DECL([], [version_type], [0], [Library versioning type])
+_LT_DECL([], [runpath_var], [0], [Shared library runtime path variable])
+_LT_DECL([], [shlibpath_var], [0],[Shared library path variable])
+_LT_DECL([], [shlibpath_overrides_runpath], [0],
+ [Is shlibpath searched before the hard-coded library search path?])
+_LT_DECL([], [libname_spec], [1], [Format of library name prefix])
+_LT_DECL([], [library_names_spec], [1],
+ [[List of archive names. First name is the real one, the rest are links.
+ The last name is the one that the linker finds with -lNAME]])
+_LT_DECL([], [soname_spec], [1],
+ [[The coded name of the library, if different from the real name]])
+_LT_DECL([], [postinstall_cmds], [2],
+ [Command to use after installation of a shared archive])
+_LT_DECL([], [postuninstall_cmds], [2],
+ [Command to use after uninstallation of a shared archive])
+_LT_DECL([], [finish_cmds], [2],
+ [Commands used to finish a libtool library installation in a directory])
+_LT_DECL([], [finish_eval], [1],
+ [[As "finish_cmds", except a single script fragment to be evaled but
+ not shown]])
+_LT_DECL([], [hardcode_into_libs], [0],
+ [Whether we should hardcode library paths into libraries])
+_LT_DECL([], [sys_lib_search_path_spec], [2],
+ [Compile-time system search path for libraries])
+_LT_DECL([], [sys_lib_dlsearch_path_spec], [2],
+ [Run-time system search path for libraries])
+])# _LT_SYS_DYNAMIC_LINKER
+
+
+# _LT_PATH_TOOL_PREFIX(TOOL)
+# --------------------------
+# find a file program which can recognize shared library
+AC_DEFUN([_LT_PATH_TOOL_PREFIX],
+[m4_require([_LT_DECL_EGREP])dnl
+AC_MSG_CHECKING([for $1])
+AC_CACHE_VAL(lt_cv_path_MAGIC_CMD,
+[case $MAGIC_CMD in
+[[\\/*] | ?:[\\/]*])
+ lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+ ;;
+*)
+ lt_save_MAGIC_CMD="$MAGIC_CMD"
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+dnl $ac_dummy forces splitting on constant user-supplied paths.
+dnl POSIX.2 word splitting is done only on the output of word expansions,
+dnl not every word. This closes a longstanding sh security hole.
+ ac_dummy="m4_if([$2], , $PATH, [$2])"
+ for ac_dir in $ac_dummy; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/$1; then
+ lt_cv_path_MAGIC_CMD="$ac_dir/$1"
+ if test -n "$file_magic_test_file"; then
+ case $deplibs_check_method in
+ "file_magic "*)
+ file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+ MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+ if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+ $EGREP "$file_magic_regex" > /dev/null; then
+ :
+ else
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such. This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem. Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+ fi ;;
+ esac
+ fi
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+ MAGIC_CMD="$lt_save_MAGIC_CMD"
+ ;;
+esac])
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+ AC_MSG_RESULT($MAGIC_CMD)
+else
+ AC_MSG_RESULT(no)
+fi
+_LT_DECL([], [MAGIC_CMD], [0],
+ [Used to examine libraries when file_magic_cmd begins with "file"])dnl
+])# _LT_PATH_TOOL_PREFIX
+
+# Old name:
+AU_ALIAS([AC_PATH_TOOL_PREFIX], [_LT_PATH_TOOL_PREFIX])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_PATH_TOOL_PREFIX], [])
+
+
+# _LT_PATH_MAGIC
+# --------------
+# find a file program which can recognize a shared library
+m4_defun([_LT_PATH_MAGIC],
+[_LT_PATH_TOOL_PREFIX(${ac_tool_prefix}file, /usr/bin$PATH_SEPARATOR$PATH)
+if test -z "$lt_cv_path_MAGIC_CMD"; then
+ if test -n "$ac_tool_prefix"; then
+ _LT_PATH_TOOL_PREFIX(file, /usr/bin$PATH_SEPARATOR$PATH)
+ else
+ MAGIC_CMD=:
+ fi
+fi
+])# _LT_PATH_MAGIC
+
+
+# LT_PATH_LD
+# ----------
+# find the pathname to the GNU or non-GNU linker
+AC_DEFUN([LT_PATH_LD],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+
+AC_ARG_WITH([gnu-ld],
+ [AS_HELP_STRING([--with-gnu-ld],
+ [assume the C compiler uses GNU ld @<:@default=no@:>@])],
+ [test "$withval" = no || with_gnu_ld=yes],
+ [with_gnu_ld=no])dnl
+
+ac_prog=ld
+if test "$GCC" = yes; then
+ # Check if gcc -print-prog-name=ld gives a path.
+ AC_MSG_CHECKING([for ld used by $CC])
+ case $host in
+ *-*-mingw*)
+ # gcc leaves a trailing carriage return which upsets mingw
+ ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+ *)
+ ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+ esac
+ case $ac_prog in
+ # Accept absolute paths.
+ [[\\/]]* | ?:[[\\/]]*)
+ re_direlt='/[[^/]][[^/]]*/\.\./'
+ # Canonicalize the pathname of ld
+ ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
+ while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
+ ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
+ done
+ test -z "$LD" && LD="$ac_prog"
+ ;;
+ "")
+ # If it fails, then pretend we aren't using GCC.
+ ac_prog=ld
+ ;;
+ *)
+ # If it is relative, then search for the first ld in PATH.
+ with_gnu_ld=unknown
+ ;;
+ esac
+elif test "$with_gnu_ld" = yes; then
+ AC_MSG_CHECKING([for GNU ld])
+else
+ AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL(lt_cv_path_LD,
+[if test -z "$LD"; then
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for ac_dir in $PATH; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+ lt_cv_path_LD="$ac_dir/$ac_prog"
+ # Check to see if the program is GNU ld. I'd rather use --version,
+ # but apparently some variants of GNU ld only accept -v.
+ # Break only if it was the GNU/non-GNU ld that we prefer.
+ case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
+ *GNU* | *'with BFD'*)
+ test "$with_gnu_ld" != no && break
+ ;;
+ *)
+ test "$with_gnu_ld" != yes && break
+ ;;
+ esac
+ fi
+ done
+ IFS="$lt_save_ifs"
+else
+ lt_cv_path_LD="$LD" # Let the user override the test with a path.
+fi])
+LD="$lt_cv_path_LD"
+if test -n "$LD"; then
+ AC_MSG_RESULT($LD)
+else
+ AC_MSG_RESULT(no)
+fi
+test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
+_LT_PATH_LD_GNU
+AC_SUBST([LD])
+
+_LT_TAGDECL([], [LD], [1], [The linker used to build libraries])
+])# LT_PATH_LD
+
+# Old names:
+AU_ALIAS([AM_PROG_LD], [LT_PATH_LD])
+AU_ALIAS([AC_PROG_LD], [LT_PATH_LD])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_PROG_LD], [])
+dnl AC_DEFUN([AC_PROG_LD], [])
+
+
+# _LT_PATH_LD_GNU
+#- --------------
+m4_defun([_LT_PATH_LD_GNU],
+[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], lt_cv_prog_gnu_ld,
+[# I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+ lt_cv_prog_gnu_ld=yes
+ ;;
+*)
+ lt_cv_prog_gnu_ld=no
+ ;;
+esac])
+with_gnu_ld=$lt_cv_prog_gnu_ld
+])# _LT_PATH_LD_GNU
+
+
+# _LT_CMD_RELOAD
+# --------------
+# find reload flag for linker
+# -- PORTME Some linkers may need a different reload flag.
+m4_defun([_LT_CMD_RELOAD],
+[AC_CACHE_CHECK([for $LD option to reload object files],
+ lt_cv_ld_reload_flag,
+ [lt_cv_ld_reload_flag='-r'])
+reload_flag=$lt_cv_ld_reload_flag
+case $reload_flag in
+"" | " "*) ;;
+*) reload_flag=" $reload_flag" ;;
+esac
+reload_cmds='$LD$reload_flag -o $output$reload_objs'
+case $host_os in
+ darwin*)
+ if test "$GCC" = yes; then
+ reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
+ else
+ reload_cmds='$LD$reload_flag -o $output$reload_objs'
+ fi
+ ;;
+esac
+_LT_DECL([], [reload_flag], [1], [How to create reloadable object files])dnl
+_LT_DECL([], [reload_cmds], [2])dnl
+])# _LT_CMD_RELOAD
+
+
+# _LT_CHECK_MAGIC_METHOD
+# ----------------------
+# how to check for library dependencies
+# -- PORTME fill in with the dynamic library characteristics
+m4_defun([_LT_CHECK_MAGIC_METHOD],
+[m4_require([_LT_DECL_EGREP])
+m4_require([_LT_DECL_OBJDUMP])
+AC_CACHE_CHECK([how to recognize dependent libraries],
+lt_cv_deplibs_check_method,
+[lt_cv_file_magic_cmd='$MAGIC_CMD'
+lt_cv_file_magic_test_file=
+lt_cv_deplibs_check_method='unknown'
+# Need to set the preceding variable on all platforms that support
+# interlibrary dependencies.
+# 'none' -- dependencies not supported.
+# `unknown' -- same as none, but documents that we really don't know.
+# 'pass_all' -- all dependencies passed with no checks.
+# 'test_compile' -- check by making test program.
+# 'file_magic [[regex]]' -- check by looking for files in library path
+# which responds to the $file_magic_cmd with a given extended regex.
+# If you have `file' or equivalent on your system and you're not sure
+# whether `pass_all' will *always* work, you probably want this one.
+
+case $host_os in
+aix[[4-9]]*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+beos*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+bsdi[[45]]*)
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib)'
+ lt_cv_file_magic_cmd='/usr/bin/file -L'
+ lt_cv_file_magic_test_file=/shlib/libc.so
+ ;;
+
+cygwin*)
+ # func_win32_libid is a shell function defined in ltmain.sh
+ lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+ lt_cv_file_magic_cmd='func_win32_libid'
+ ;;
+
+mingw* | pw32*)
+ # Base MSYS/MinGW do not provide the 'file' command needed by
+ # func_win32_libid shell function, so use a weaker test based on 'objdump',
+ # unless we find 'file', for example because we are cross-compiling.
+ if ( file / ) >/dev/null 2>&1; then
+ lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+ lt_cv_file_magic_cmd='func_win32_libid'
+ else
+ lt_cv_deplibs_check_method='file_magic file format pei*-i386(.*architecture: i386)?'
+ lt_cv_file_magic_cmd='$OBJDUMP -f'
+ fi
+ ;;
+
+cegcc)
+ # use the weaker test based on 'objdump'. See mingw*.
+ lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
+ lt_cv_file_magic_cmd='$OBJDUMP -f'
+ ;;
+
+darwin* | rhapsody*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+freebsd* | dragonfly*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+ case $host_cpu in
+ i*86 )
+ # Not sure whether the presence of OpenBSD here was a mistake.
+ # Let's accept both of them until this is cleared up.
+ lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[[3-9]]86 (compact )?demand paged shared library'
+ lt_cv_file_magic_cmd=/usr/bin/file
+ lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
+ ;;
+ esac
+ else
+ lt_cv_deplibs_check_method=pass_all
+ fi
+ ;;
+
+gnu*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+hpux10.20* | hpux11*)
+ lt_cv_file_magic_cmd=/usr/bin/file
+ case $host_cpu in
+ ia64*)
+ lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|ELF-[[0-9]][[0-9]]) shared object file - IA64'
+ lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
+ ;;
+ hppa*64*)
+ [lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - PA-RISC [0-9].[0-9]']
+ lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
+ ;;
+ *)
+ lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|PA-RISC[[0-9]].[[0-9]]) shared library'
+ lt_cv_file_magic_test_file=/usr/lib/libc.sl
+ ;;
+ esac
+ ;;
+
+interix[[3-9]]*)
+ # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|\.a)$'
+ ;;
+
+irix5* | irix6* | nonstopux*)
+ case $LD in
+ *-32|*"-32 ") libmagic=32-bit;;
+ *-n32|*"-n32 ") libmagic=N32;;
+ *-64|*"-64 ") libmagic=64-bit;;
+ *) libmagic=never-match;;
+ esac
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+netbsd* | netbsdelf*-gnu)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+ else
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|_pic\.a)$'
+ fi
+ ;;
+
+newos6*)
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (executable|dynamic lib)'
+ lt_cv_file_magic_cmd=/usr/bin/file
+ lt_cv_file_magic_test_file=/usr/lib/libnls.so
+ ;;
+
+*nto* | *qnx*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+openbsd*)
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|\.so|_pic\.a)$'
+ else
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+ fi
+ ;;
+
+osf3* | osf4* | osf5*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+rdos*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+solaris*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+sysv4 | sysv4.3*)
+ case $host_vendor in
+ motorola)
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib) M[[0-9]][[0-9]]* Version [[0-9]]'
+ lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
+ ;;
+ ncr)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ sequent)
+ lt_cv_file_magic_cmd='/bin/file'
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB (shared object|dynamic lib )'
+ ;;
+ sni)
+ lt_cv_file_magic_cmd='/bin/file'
+ lt_cv_deplibs_check_method="file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB dynamic lib"
+ lt_cv_file_magic_test_file=/lib/libc.so
+ ;;
+ siemens)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ pc)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ esac
+ ;;
+
+tpf*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+esac
+])
+file_magic_cmd=$lt_cv_file_magic_cmd
+deplibs_check_method=$lt_cv_deplibs_check_method
+test -z "$deplibs_check_method" && deplibs_check_method=unknown
+
+_LT_DECL([], [deplibs_check_method], [1],
+ [Method to check whether dependent libraries are shared objects])
+_LT_DECL([], [file_magic_cmd], [1],
+ [Command to use when deplibs_check_method == "file_magic"])
+])# _LT_CHECK_MAGIC_METHOD
+
+
+# LT_PATH_NM
+# ----------
+# find the pathname to a BSD- or MS-compatible name lister
+AC_DEFUN([LT_PATH_NM],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_CACHE_CHECK([for BSD- or MS-compatible name lister (nm)], lt_cv_path_NM,
+[if test -n "$NM"; then
+ # Let the user override the test.
+ lt_cv_path_NM="$NM"
+else
+ lt_nm_to_check="${ac_tool_prefix}nm"
+ if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
+ lt_nm_to_check="$lt_nm_to_check nm"
+ fi
+ for lt_tmp_nm in $lt_nm_to_check; do
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ tmp_nm="$ac_dir/$lt_tmp_nm"
+ if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
+ # Check to see if the nm accepts a BSD-compat flag.
+ # Adding the `sed 1q' prevents false positives on HP-UX, which says:
+ # nm: unknown option "B" ignored
+ # Tru64's nm complains that /dev/null is an invalid object file
+ case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
+ */dev/null* | *'Invalid file or object type'*)
+ lt_cv_path_NM="$tmp_nm -B"
+ break
+ ;;
+ *)
+ case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+ */dev/null*)
+ lt_cv_path_NM="$tmp_nm -p"
+ break
+ ;;
+ *)
+ lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
+ continue # so that we can try to find one that supports BSD flags
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ done
+ IFS="$lt_save_ifs"
+ done
+ : ${lt_cv_path_NM=no}
+fi])
+if test "$lt_cv_path_NM" != "no"; then
+ NM="$lt_cv_path_NM"
+else
+ # Didn't find any BSD compatible name lister, look for dumpbin.
+ AC_CHECK_TOOLS(DUMPBIN, ["dumpbin -symbols" "link -dump -symbols"], :)
+ AC_SUBST([DUMPBIN])
+ if test "$DUMPBIN" != ":"; then
+ NM="$DUMPBIN"
+ fi
+fi
+test -z "$NM" && NM=nm
+AC_SUBST([NM])
+_LT_DECL([], [NM], [1], [A BSD- or MS-compatible name lister])dnl
+
+AC_CACHE_CHECK([the name lister ($NM) interface], [lt_cv_nm_interface],
+ [lt_cv_nm_interface="BSD nm"
+ echo "int some_variable = 0;" > conftest.$ac_ext
+ (eval echo "\"\$as_me:__oline__: $ac_compile\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$ac_compile" 2>conftest.err)
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ (eval echo "\"\$as_me:__oline__: $NM \\\"conftest.$ac_objext\\\"\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ (eval echo "\"\$as_me:__oline__: output\"" >&AS_MESSAGE_LOG_FD)
+ cat conftest.out >&AS_MESSAGE_LOG_FD
+ if $GREP 'External.*some_variable' conftest.out > /dev/null; then
+ lt_cv_nm_interface="MS dumpbin"
+ fi
+ rm -f conftest*])
+])# LT_PATH_NM
+
+# Old names:
+AU_ALIAS([AM_PROG_NM], [LT_PATH_NM])
+AU_ALIAS([AC_PROG_NM], [LT_PATH_NM])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_PROG_NM], [])
+dnl AC_DEFUN([AC_PROG_NM], [])
+
+
+# LT_LIB_M
+# --------
+# check for math library
+AC_DEFUN([LT_LIB_M],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+LIBM=
+case $host in
+*-*-beos* | *-*-cygwin* | *-*-pw32* | *-*-darwin*)
+ # These system don't have libm, or don't need it
+ ;;
+*-ncr-sysv4.3*)
+ AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw")
+ AC_CHECK_LIB(m, cos, LIBM="$LIBM -lm")
+ ;;
+*)
+ AC_CHECK_LIB(m, cos, LIBM="-lm")
+ ;;
+esac
+AC_SUBST([LIBM])
+])# LT_LIB_M
+
+# Old name:
+AU_ALIAS([AC_CHECK_LIBM], [LT_LIB_M])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_CHECK_LIBM], [])
+
+
+# _LT_COMPILER_NO_RTTI([TAGNAME])
+# -------------------------------
+m4_defun([_LT_COMPILER_NO_RTTI],
+[m4_require([_LT_TAG_COMPILER])dnl
+
+_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+
+if test "$GCC" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin'
+
+ _LT_COMPILER_OPTION([if $compiler supports -fno-rtti -fno-exceptions],
+ lt_cv_prog_compiler_rtti_exceptions,
+ [-fno-rtti -fno-exceptions], [],
+ [_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)="$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1) -fno-rtti -fno-exceptions"])
+fi
+_LT_TAGDECL([no_builtin_flag], [lt_prog_compiler_no_builtin_flag], [1],
+ [Compiler flag to turn off builtin functions])
+])# _LT_COMPILER_NO_RTTI
+
+
+# _LT_CMD_GLOBAL_SYMBOLS
+# ----------------------
+m4_defun([_LT_CMD_GLOBAL_SYMBOLS],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+AC_REQUIRE([LT_PATH_LD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+
+# Check for command to grab the raw symbol name followed by C symbol from nm.
+AC_MSG_CHECKING([command to parse $NM output from $compiler object])
+AC_CACHE_VAL([lt_cv_sys_global_symbol_pipe],
+[
+# These are sane defaults that work on at least a few old systems.
+# [They come from Ultrix. What could be older than Ultrix?!! ;)]
+
+# Character class describing NM global symbol codes.
+symcode='[[BCDEGRST]]'
+
+# Regexp to match symbols that can be accessed directly from C.
+sympat='\([[_A-Za-z]][[_A-Za-z0-9]]*\)'
+
+# Define system-specific variables.
+case $host_os in
+aix*)
+ symcode='[[BCDT]]'
+ ;;
+cygwin* | mingw* | pw32* | cegcc*)
+ symcode='[[ABCDGISTW]]'
+ ;;
+hpux*)
+ if test "$host_cpu" = ia64; then
+ symcode='[[ABCDEGRST]]'
+ fi
+ ;;
+irix* | nonstopux*)
+ symcode='[[BCDEGRST]]'
+ ;;
+osf*)
+ symcode='[[BCDEGQRST]]'
+ ;;
+solaris*)
+ symcode='[[BDRT]]'
+ ;;
+sco3.2v5*)
+ symcode='[[DT]]'
+ ;;
+sysv4.2uw2*)
+ symcode='[[DT]]'
+ ;;
+sysv5* | sco5v6* | unixware* | OpenUNIX*)
+ symcode='[[ABDT]]'
+ ;;
+sysv4)
+ symcode='[[DFNSTU]]'
+ ;;
+esac
+
+# If we're using GNU nm, then use its standard symbol codes.
+case `$NM -V 2>&1` in
+*GNU* | *'with BFD'*)
+ symcode='[[ABCDGIRSTW]]' ;;
+esac
+
+# Transform an extracted symbol line into a proper C declaration.
+# Some systems (esp. on ia64) link data and code symbols differently,
+# so use this general approach.
+lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
+
+# Transform an extracted symbol line into symbol name and symbol address
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([[^ ]]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([[^ ]]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \(lib[[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"lib\2\", (void *) \&\2},/p'"
+
+# Handle CRLF in mingw tool chain
+opt_cr=
+case $build_os in
+mingw*)
+ opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
+ ;;
+esac
+
+# Try without a prefix underscore, then with it.
+for ac_symprfx in "" "_"; do
+
+ # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
+ symxfrm="\\1 $ac_symprfx\\2 \\2"
+
+ # Write the raw and C identifiers.
+ if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+ # Fake it for dumpbin and say T for any non-static function
+ # and D for any global variable.
+ # Also find C++ and __fastcall symbols from MSVC++,
+ # which start with @ or ?.
+ lt_cv_sys_global_symbol_pipe="$AWK ['"\
+" {last_section=section; section=\$ 3};"\
+" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
+" \$ 0!~/External *\|/{next};"\
+" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
+" {if(hide[section]) next};"\
+" {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
+" {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
+" s[1]~/^[@?]/{print s[1], s[1]; next};"\
+" s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
+" ' prfx=^$ac_symprfx]"
+ else
+ lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[[ ]]\($symcode$symcode*\)[[ ]][[ ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+ fi
+
+ # Check to see that the pipe works correctly.
+ pipe_works=no
+
+ rm -f conftest*
+ cat > conftest.$ac_ext <<_LT_EOF
+#ifdef __cplusplus
+extern "C" {
+#endif
+char nm_test_var;
+void nm_test_func(void);
+void nm_test_func(void){}
+#ifdef __cplusplus
+}
+#endif
+int main(){nm_test_var='a';nm_test_func();return(0);}
+_LT_EOF
+
+ if AC_TRY_EVAL(ac_compile); then
+ # Now try to grab the symbols.
+ nlist=conftest.nm
+ if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $nlist) && test -s "$nlist"; then
+ # Try sorting and uniquifying the output.
+ if sort "$nlist" | uniq > "$nlist"T; then
+ mv -f "$nlist"T "$nlist"
+ else
+ rm -f "$nlist"T
+ fi
+
+ # Make sure that we snagged all the symbols we need.
+ if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
+ if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
+ cat <<_LT_EOF > conftest.$ac_ext
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_LT_EOF
+ # Now generate the symbol file.
+ eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
+
+ cat <<_LT_EOF >> conftest.$ac_ext
+
+/* The mapping between symbol names and symbols. */
+const struct {
+ const char *name;
+ void *address;
+}
+lt__PROGRAM__LTX_preloaded_symbols[[]] =
+{
+ { "@PROGRAM@", (void *) 0 },
+_LT_EOF
+ $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/ {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
+ cat <<\_LT_EOF >> conftest.$ac_ext
+ {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+ return lt__PROGRAM__LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+_LT_EOF
+ # Now try linking the two files.
+ mv conftest.$ac_objext conftstm.$ac_objext
+ lt_save_LIBS="$LIBS"
+ lt_save_CFLAGS="$CFLAGS"
+ LIBS="conftstm.$ac_objext"
+ CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)"
+ if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
+ pipe_works=yes
+ fi
+ LIBS="$lt_save_LIBS"
+ CFLAGS="$lt_save_CFLAGS"
+ else
+ echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD
+ fi
+ else
+ echo "cannot find nm_test_var in $nlist" >&AS_MESSAGE_LOG_FD
+ fi
+ else
+ echo "cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
+ fi
+ else
+ echo "$progname: failed program was:" >&AS_MESSAGE_LOG_FD
+ cat conftest.$ac_ext >&5
+ fi
+ rm -rf conftest* conftst*
+
+ # Do not use the global_symbol_pipe unless it works.
+ if test "$pipe_works" = yes; then
+ break
+ else
+ lt_cv_sys_global_symbol_pipe=
+ fi
+done
+])
+if test -z "$lt_cv_sys_global_symbol_pipe"; then
+ lt_cv_sys_global_symbol_to_cdecl=
+fi
+if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
+ AC_MSG_RESULT(failed)
+else
+ AC_MSG_RESULT(ok)
+fi
+
+_LT_DECL([global_symbol_pipe], [lt_cv_sys_global_symbol_pipe], [1],
+ [Take the output of nm and produce a listing of raw symbols and C names])
+_LT_DECL([global_symbol_to_cdecl], [lt_cv_sys_global_symbol_to_cdecl], [1],
+ [Transform the output of nm in a proper C declaration])
+_LT_DECL([global_symbol_to_c_name_address],
+ [lt_cv_sys_global_symbol_to_c_name_address], [1],
+ [Transform the output of nm in a C name address pair])
+_LT_DECL([global_symbol_to_c_name_address_lib_prefix],
+ [lt_cv_sys_global_symbol_to_c_name_address_lib_prefix], [1],
+ [Transform the output of nm in a C name address pair when lib prefix is needed])
+]) # _LT_CMD_GLOBAL_SYMBOLS
+
+
+# _LT_COMPILER_PIC([TAGNAME])
+# ---------------------------
+m4_defun([_LT_COMPILER_PIC],
+[m4_require([_LT_TAG_COMPILER])dnl
+_LT_TAGVAR(lt_prog_compiler_wl, $1)=
+_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+_LT_TAGVAR(lt_prog_compiler_static, $1)=
+
+AC_MSG_CHECKING([for $compiler option to produce PIC])
+m4_if([$1], [CXX], [
+ # C++ specific cases for pic, static, wl, etc.
+ if test "$GXX" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+ case $host_os in
+ aix*)
+ # All AIX code is PIC.
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ m68k)
+ # FIXME: we need at least 68020 code to build shared libraries, but
+ # adding the `-m68020' flag to GCC prevents building anything better,
+ # like `-m68040'.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+ ;;
+ esac
+ ;;
+
+ beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+ # PIC is the default for these OSes.
+ ;;
+ mingw* | cygwin* | os2* | pw32* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ # Although the cygwin gcc ignores -fPIC, still need this for old-style
+ # (--disable-auto-import) libraries
+ m4_if([$1], [GCJ], [],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+ ;;
+ darwin* | rhapsody*)
+ # PIC is the default on this platform
+ # Common symbols not allowed in MH_DYLIB files
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+ ;;
+ *djgpp*)
+ # DJGPP does not support shared libraries at all
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ ;;
+ interix[[3-9]]*)
+ # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+ # Instead, we relocate shared libraries at runtime.
+ ;;
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+ fi
+ ;;
+ hpux*)
+ # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+ # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag
+ # sets the default TLS model and affects inlining.
+ case $host_cpu in
+ hppa*64*)
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ ;;
+ *qnx* | *nto*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ else
+ case $host_os in
+ aix[[4-9]]*)
+ # All AIX code is PIC.
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ else
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+ fi
+ ;;
+ chorus*)
+ case $cc_basename in
+ cxch68*)
+ # Green Hills C++ Compiler
+ # _LT_TAGVAR(lt_prog_compiler_static, $1)="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a"
+ ;;
+ esac
+ ;;
+ dgux*)
+ case $cc_basename in
+ ec++*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ ;;
+ ghcx*)
+ # Green Hills C++ Compiler
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ freebsd* | dragonfly*)
+ # FreeBSD uses GNU C++
+ ;;
+ hpux9* | hpux10* | hpux11*)
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+ if test "$host_cpu" != ia64; then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+ fi
+ ;;
+ aCC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+ case $host_cpu in
+ hppa*64*|ia64*)
+ # +Z the default
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+ ;;
+ esac
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ interix*)
+ # This is c89, which is MS Visual C++ (no shared libs)
+ # Anyone wants to do a port?
+ ;;
+ irix5* | irix6* | nonstopux*)
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ # CC pic flag -KPIC is the default.
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ case $cc_basename in
+ KCC*)
+ # KAI C++ Compiler
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ ecpc* )
+ # old Intel C++ for x86_64 which still supported -KPIC.
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ icpc* )
+ # Intel C++, used to be incompatible with GCC.
+ # ICC 10 doesn't accept -KPIC any more.
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ pgCC* | pgcpp*)
+ # Portland Group C++ compiler
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ cxx*)
+ # Compaq C++
+ # Make sure the PIC flag is empty. It appears that all Alpha
+ # Linux and Compaq Tru64 Unix objects are PIC.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+ xlc* | xlC*)
+ # IBM XL 8.0 on PPC
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+ ;;
+ *)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C++ 5.9
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+ lynxos*)
+ ;;
+ m88k*)
+ ;;
+ mvs*)
+ case $cc_basename in
+ cxx*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-W c,exportall'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ netbsd* | netbsdelf*-gnu)
+ ;;
+ *qnx* | *nto*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+ osf3* | osf4* | osf5*)
+ case $cc_basename in
+ KCC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+ ;;
+ RCC*)
+ # Rational C++ 2.4.1
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ ;;
+ cxx*)
+ # Digital/Compaq C++
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # Make sure the PIC flag is empty. It appears that all Alpha
+ # Linux and Compaq Tru64 Unix objects are PIC.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ psos*)
+ ;;
+ solaris*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.2, 5.x and Centerline C++
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+ ;;
+ gcx*)
+ # Green Hills C++ Compiler
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ sunos4*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.x
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ lcc*)
+ # Lucid
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ esac
+ ;;
+ tandem*)
+ case $cc_basename in
+ NCC*)
+ # NonStop-UX NCC 3.20
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ vxworks*)
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ ;;
+ esac
+ fi
+],
+[
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+ case $host_os in
+ aix*)
+ # All AIX code is PIC.
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ m68k)
+ # FIXME: we need at least 68020 code to build shared libraries, but
+ # adding the `-m68020' flag to GCC prevents building anything better,
+ # like `-m68040'.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+ ;;
+ esac
+ ;;
+
+ beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+ # PIC is the default for these OSes.
+ ;;
+
+ mingw* | cygwin* | pw32* | os2* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ # Although the cygwin gcc ignores -fPIC, still need this for old-style
+ # (--disable-auto-import) libraries
+ m4_if([$1], [GCJ], [],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+ ;;
+
+ darwin* | rhapsody*)
+ # PIC is the default on this platform
+ # Common symbols not allowed in MH_DYLIB files
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+ ;;
+
+ hpux*)
+ # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+ # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag
+ # sets the default TLS model and affects inlining.
+ case $host_cpu in
+ hppa*64*)
+ # +Z the default
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ ;;
+
+ interix[[3-9]]*)
+ # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+ # Instead, we relocate shared libraries at runtime.
+ ;;
+
+ msdosdjgpp*)
+ # Just because we use GCC doesn't mean we suddenly get shared libraries
+ # on systems that don't support them.
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ enable_shared=no
+ ;;
+
+ *nto* | *qnx*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+ fi
+ ;;
+
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ else
+ # PORTME Check for flag to pass linker flags through the system compiler.
+ case $host_os in
+ aix*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ else
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+ fi
+ ;;
+
+ mingw* | cygwin* | pw32* | os2* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ m4_if([$1], [GCJ], [],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+ ;;
+
+ hpux9* | hpux10* | hpux11*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
+ # not for PA HP-UX.
+ case $host_cpu in
+ hppa*64*|ia64*)
+ # +Z the default
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+ ;;
+ esac
+ # Is there a better lt_prog_compiler_static that works with the bundled CC?
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+ ;;
+
+ irix5* | irix6* | nonstopux*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # PIC (with -KPIC) is the default.
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+
+ linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ case $cc_basename in
+ # old Intel for x86_64 which still supported -KPIC.
+ ecc*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ # icc used to be incompatible with GCC.
+ # ICC 10 doesn't accept -KPIC any more.
+ icc* | ifort*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ # Lahey Fortran 8.1.
+ lf95*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='--shared'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='--static'
+ ;;
+ pgcc* | pgf77* | pgf90* | pgf95*)
+ # Portland Group compilers (*not* the Pentium gcc compiler,
+ # which looks to be a dead project)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ ccc*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # All Alpha code is PIC.
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+ xl*)
+ # IBM XL C 8.0/Fortran 10.1 on PPC
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+ ;;
+ *)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C 5.9
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ ;;
+ *Sun\ F*)
+ # Sun Fortran 8.3 passes all unrecognized flags to the linker
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)=''
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+
+ newsos6)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ *nto* | *qnx*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+
+ osf3* | osf4* | osf5*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # All OSF/1 code is PIC.
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+
+ rdos*)
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+
+ solaris*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ case $cc_basename in
+ f77* | f90* | f95*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ';;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,';;
+ esac
+ ;;
+
+ sunos4*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ sysv4 | sysv4.2uw2* | sysv4.3*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec ;then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-Kconform_pic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ fi
+ ;;
+
+ sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ unicos*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ ;;
+
+ uts4*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ *)
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ ;;
+ esac
+ fi
+])
+case $host_os in
+ # For platforms which do not support PIC, -DPIC is meaningless:
+ *djgpp*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)="$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])"
+ ;;
+esac
+AC_MSG_RESULT([$_LT_TAGVAR(lt_prog_compiler_pic, $1)])
+_LT_TAGDECL([wl], [lt_prog_compiler_wl], [1],
+ [How to pass a linker flag through the compiler])
+
+#
+# Check to make sure the PIC flag actually works.
+#
+if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then
+ _LT_COMPILER_OPTION([if $compiler PIC flag $_LT_TAGVAR(lt_prog_compiler_pic, $1) works],
+ [_LT_TAGVAR(lt_cv_prog_compiler_pic_works, $1)],
+ [$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])], [],
+ [case $_LT_TAGVAR(lt_prog_compiler_pic, $1) in
+ "" | " "*) ;;
+ *) _LT_TAGVAR(lt_prog_compiler_pic, $1)=" $_LT_TAGVAR(lt_prog_compiler_pic, $1)" ;;
+ esac],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no])
+fi
+_LT_TAGDECL([pic_flag], [lt_prog_compiler_pic], [1],
+ [Additional compiler flags for building library objects])
+
+#
+# Check to make sure the static flag actually works.
+#
+wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1) eval lt_tmp_static_flag=\"$_LT_TAGVAR(lt_prog_compiler_static, $1)\"
+_LT_LINKER_OPTION([if $compiler static flag $lt_tmp_static_flag works],
+ _LT_TAGVAR(lt_cv_prog_compiler_static_works, $1),
+ $lt_tmp_static_flag,
+ [],
+ [_LT_TAGVAR(lt_prog_compiler_static, $1)=])
+_LT_TAGDECL([link_static_flag], [lt_prog_compiler_static], [1],
+ [Compiler flag to prevent dynamic linking])
+])# _LT_COMPILER_PIC
+
+
+# _LT_LINKER_SHLIBS([TAGNAME])
+# ----------------------------
+# See if the linker supports building shared libraries.
+m4_defun([_LT_LINKER_SHLIBS],
+[AC_REQUIRE([LT_PATH_LD])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+m4_if([$1], [CXX], [
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ case $host_os in
+ aix[[4-9]]*)
+ # If we're using GNU nm, then we don't want the "-C" option.
+ # -C means demangle to AIX nm, but means don't demangle with GNU nm
+ if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ else
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ fi
+ ;;
+ pw32*)
+ _LT_TAGVAR(export_symbols_cmds, $1)="$ltdll_cmds"
+ ;;
+ cygwin* | mingw* | cegcc*)
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;/^.*[[ ]]__nm__/s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
+ ;;
+ linux* | k*bsd*-gnu)
+ _LT_TAGVAR(link_all_deplibs, $1)=no
+ ;;
+ *)
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ ;;
+ esac
+ _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+], [
+ runpath_var=
+ _LT_TAGVAR(allow_undefined_flag, $1)=
+ _LT_TAGVAR(always_export_symbols, $1)=no
+ _LT_TAGVAR(archive_cmds, $1)=
+ _LT_TAGVAR(archive_expsym_cmds, $1)=
+ _LT_TAGVAR(compiler_needs_object, $1)=no
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ _LT_TAGVAR(hardcode_automatic, $1)=no
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+ _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=
+ _LT_TAGVAR(hardcode_minus_L, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+ _LT_TAGVAR(inherit_rpath, $1)=no
+ _LT_TAGVAR(link_all_deplibs, $1)=unknown
+ _LT_TAGVAR(module_cmds, $1)=
+ _LT_TAGVAR(module_expsym_cmds, $1)=
+ _LT_TAGVAR(old_archive_from_new_cmds, $1)=
+ _LT_TAGVAR(old_archive_from_expsyms_cmds, $1)=
+ _LT_TAGVAR(thread_safe_flag_spec, $1)=
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ # include_expsyms should be a list of space-separated symbols to be *always*
+ # included in the symbol list
+ _LT_TAGVAR(include_expsyms, $1)=
+ # exclude_expsyms can be an extended regexp of symbols to exclude
+ # it will be wrapped by ` (' and `)$', so one must not match beginning or
+ # end of line. Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
+ # as well as any symbol that contains `d'.
+ _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+ # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+ # platforms (ab)use it in PIC code, but their linkers get confused if
+ # the symbol is explicitly referenced. Since portable code cannot
+ # rely on this symbol name, it's probably fine to never include it in
+ # preloaded symbol tables.
+ # Exclude shared library initialization/finalization symbols.
+dnl Note also adjust exclude_expsyms for C++ above.
+ extract_expsyms_cmds=
+
+ case $host_os in
+ cygwin* | mingw* | pw32* | cegcc*)
+ # FIXME: the MSVC++ port hasn't been tested in a loooong time
+ # When not using gcc, we currently assume that we are using
+ # Microsoft Visual C++.
+ if test "$GCC" != yes; then
+ with_gnu_ld=no
+ fi
+ ;;
+ interix*)
+ # we just hope/assume this is gcc and not c89 (= MSVC++)
+ with_gnu_ld=yes
+ ;;
+ openbsd*)
+ with_gnu_ld=no
+ ;;
+ linux* | k*bsd*-gnu)
+ _LT_TAGVAR(link_all_deplibs, $1)=no
+ ;;
+ esac
+
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ if test "$with_gnu_ld" = yes; then
+ # If archive_cmds runs LD, not CC, wlarc should be empty
+ wlarc='${wl}'
+
+ # Set some defaults for GNU ld with shared library support. These
+ # are reset later if shared libraries are not supported. Putting them
+ # here allows them to be overridden if necessary.
+ runpath_var=LD_RUN_PATH
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ # ancient GNU ld didn't support --whole-archive et. al.
+ if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
+ _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+ else
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ fi
+ supports_anon_versioning=no
+ case `$LD -v 2>&1` in
+ *GNU\ gold*) supports_anon_versioning=yes ;;
+ *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.10.*) ;; # catch versions < 2.11
+ *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
+ *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
+ *\ 2.11.*) ;; # other 2.11 versions
+ *) supports_anon_versioning=yes ;;
+ esac
+
+ # See if GNU ld supports shared libraries.
+ case $host_os in
+ aix[[3-9]]*)
+ # On AIX/PPC, the GNU linker is very broken
+ if test "$host_cpu" != ia64; then
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the GNU linker, at least up to release 2.9.1, is reported
+*** to be unable to reliably create shared libraries on AIX.
+*** Therefore, libtool is disabling shared libraries support. If you
+*** really care for shared libraries, you may want to modify your PATH
+*** so that a non-GNU linker is found, and then restart.
+
+_LT_EOF
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)=''
+ ;;
+ m68k)
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ ;;
+ esac
+ ;;
+
+ beos*)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+ # support --undefined. This deserves some investigation. FIXME
+ _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+ # as there is no search path for DLLs.
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=no
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/'\'' | $SED -e '\''/^[[AITW]][[ ]]/s/.*[[ ]]//'\'' | sort | uniq > $export_symbols'
+
+ if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ # If the export-symbols file already is a .def file (1st line
+ # is EXPORTS), use it as is; otherwise, prepend...
+ _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ cp $export_symbols $output_objdir/$soname.def;
+ else
+ echo EXPORTS > $output_objdir/$soname.def;
+ cat $export_symbols >> $output_objdir/$soname.def;
+ fi~
+ $CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ interix[[3-9]]*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+ # Instead, shared libraries are loaded at an image base (0x10000000 by
+ # default) and relocated if they conflict, which is a slow very memory
+ # consuming and fragmenting process. To avoid this, we pick a random,
+ # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+ # time. Moving up from 0x10000000 also allows more sbrk(2) space.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ ;;
+
+ gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+ tmp_diet=no
+ if test "$host_os" = linux-dietlibc; then
+ case $cc_basename in
+ diet\ *) tmp_diet=yes;; # linux-dietlibc with static linking (!diet-dyn)
+ esac
+ fi
+ if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
+ && test "$tmp_diet" = no
+ then
+ tmp_addflag=
+ tmp_sharedflag='-shared'
+ case $cc_basename,$host_cpu in
+ pgcc*) # Portland Group C compiler
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ tmp_addflag=' $pic_flag'
+ ;;
+ pgf77* | pgf90* | pgf95*) # Portland Group f77 and f90 compilers
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ tmp_addflag=' $pic_flag -Mnomain' ;;
+ ecc*,ia64* | icc*,ia64*) # Intel C compiler on ia64
+ tmp_addflag=' -i_dynamic' ;;
+ efc*,ia64* | ifort*,ia64*) # Intel Fortran compiler on ia64
+ tmp_addflag=' -i_dynamic -nofor_main' ;;
+ ifc* | ifort*) # Intel Fortran compiler
+ tmp_addflag=' -nofor_main' ;;
+ lf95*) # Lahey Fortran 8.1
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ tmp_sharedflag='--shared' ;;
+ xl[[cC]]*) # IBM XL C 8.0 on PPC (deal with xlf below)
+ tmp_sharedflag='-qmkshrobj'
+ tmp_addflag= ;;
+ esac
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*) # Sun C 5.9
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ _LT_TAGVAR(compiler_needs_object, $1)=yes
+ tmp_sharedflag='-G' ;;
+ *Sun\ F*) # Sun Fortran 8.3
+ tmp_sharedflag='-G' ;;
+ esac
+ _LT_TAGVAR(archive_cmds, $1)='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+
+ if test "x$supports_anon_versioning" = xyes; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+ fi
+
+ case $cc_basename in
+ xlf*)
+ # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='--whole-archive$convenience --no-whole-archive'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+ _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='-rpath $libdir'
+ _LT_TAGVAR(archive_cmds, $1)='$LD -shared $libobjs $deplibs $compiler_flags -soname $soname -o $lib'
+ if test "x$supports_anon_versioning" = xyes; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $LD -shared $libobjs $deplibs $compiler_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
+ fi
+ ;;
+ esac
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ netbsd* | netbsdelf*-gnu)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
+ wlarc=
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ fi
+ ;;
+
+ solaris*)
+ if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: The releases 2.8.* of the GNU linker cannot reliably
+*** create shared libraries on Solaris systems. Therefore, libtool
+*** is disabling shared libraries support. We urge you to upgrade GNU
+*** binutils to release 2.9.1 or newer. Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+ elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+ case `$LD -v 2>&1` in
+ *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.1[[0-5]].*)
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
+*** reliably create shared libraries on SCO systems. Therefore, libtool
+*** is disabling shared libraries support. We urge you to upgrade GNU
+*** binutils to release 2.16.91.0.3 or newer. Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+ ;;
+ *)
+ # For security reasons, it is highly recommended that you always
+ # use absolute paths for naming shared libraries, and exclude the
+ # DT_RUNPATH tag from executables and libraries. But doing so
+ # requires that you compile everything twice, which is a pain.
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ sunos4*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ wlarc=
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ *)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+
+ if test "$_LT_TAGVAR(ld_shlibs, $1)" = no; then
+ runpath_var=
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ fi
+ else
+ # PORTME fill in a description of your system's linker (not GNU ld)
+ case $host_os in
+ aix3*)
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=yes
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
+ # Note: this linker hardcodes the directories in LIBPATH if there
+ # are no directories specified by -L.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
+ # Neither direct hardcoding nor static linking is supported with a
+ # broken collect2.
+ _LT_TAGVAR(hardcode_direct, $1)=unsupported
+ fi
+ ;;
+
+ aix[[4-9]]*)
+ if test "$host_cpu" = ia64; then
+ # On IA64, the linker does run time linking by default, so we don't
+ # have to do anything special.
+ aix_use_runtimelinking=no
+ exp_sym_flag='-Bexport'
+ no_entry_flag=""
+ else
+ # If we're using GNU nm, then we don't want the "-C" option.
+ # -C means demangle to AIX nm, but means don't demangle with GNU nm
+ if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ else
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ fi
+ aix_use_runtimelinking=no
+
+ # Test if we are trying to use run time linking or normal
+ # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+ # need to do runtime linking.
+ case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+ for ld_flag in $LDFLAGS; do
+ if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+ aix_use_runtimelinking=yes
+ break
+ fi
+ done
+ ;;
+ esac
+
+ exp_sym_flag='-bexport'
+ no_entry_flag='-bnoentry'
+ fi
+
+ # When large executables or shared objects are built, AIX ld can
+ # have problems creating the table of contents. If linking a library
+ # or program results in "error TOC overflow" add -mminimal-toc to
+ # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not
+ # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+ _LT_TAGVAR(archive_cmds, $1)=''
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+ if test "$GCC" = yes; then
+ case $host_os in aix4.[[012]]|aix4.[[012]].*)
+ # We only want to do this on AIX 4.2 and lower, the check
+ # below for broken collect2 doesn't work under 4.3+
+ collect2name=`${CC} -print-prog-name=collect2`
+ if test -f "$collect2name" &&
+ strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+ then
+ # We have reworked collect2
+ :
+ else
+ # We have old collect2
+ _LT_TAGVAR(hardcode_direct, $1)=unsupported
+ # It fails to find uninstalled libraries when the uninstalled
+ # path is not listed in the libpath. Setting hardcode_minus_L
+ # to unsupported forces relinking
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=
+ fi
+ ;;
+ esac
+ shared_flag='-shared'
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag="$shared_flag "'${wl}-G'
+ fi
+ _LT_TAGVAR(link_all_deplibs, $1)=no
+ else
+ # not using gcc
+ if test "$host_cpu" = ia64; then
+ # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+ # chokes on -Wl,-G. The following line is correct:
+ shared_flag='-G'
+ else
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag='${wl}-G'
+ else
+ shared_flag='${wl}-bM:SRE'
+ fi
+ fi
+ fi
+
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+ # It seems that -bexpall does not export symbols beginning with
+ # underscore (_), so it is better to generate a list of symbols to export.
+ _LT_TAGVAR(always_export_symbols, $1)=yes
+ if test "$aix_use_runtimelinking" = yes; then
+ # Warning - without using the other runtime loading flags (-brtl),
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then $ECHO "X${wl}${allow_undefined_flag}" | $Xsed; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+ else
+ if test "$host_cpu" = ia64; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+ _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+ else
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+ # Warning - without using the other run time loading flags,
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+ # Exported symbols can be pulled into shared objects from archives
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+ # This is similar to how AIX traditionally builds its shared libraries.
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+ fi
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)=''
+ ;;
+ m68k)
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ ;;
+ esac
+ ;;
+
+ bsdi[[45]]*)
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)=-rdynamic
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # When not using gcc, we currently assume that we are using
+ # Microsoft Visual C++.
+ # hardcode_libdir_flag_spec is actually meaningless, as there is
+ # no search path for DLLs.
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ # Tell ltmain to make .lib files, not .a files.
+ libext=lib
+ # Tell ltmain to make .dll files, not .so files.
+ shrext_cmds=".dll"
+ # FIXME: Setting linknames here is a bad hack.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -o $lib $libobjs $compiler_flags `$ECHO "X$deplibs" | $Xsed -e '\''s/ -lc$//'\''` -link -dll~linknames='
+ # The linker will automatically build a .lib file if we build a DLL.
+ _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
+ # FIXME: Should let the user specify the lib program.
+ _LT_TAGVAR(old_archive_cmds, $1)='lib -OUT:$oldlib$oldobjs$old_deplibs'
+ _LT_TAGVAR(fix_srcfile_path, $1)='`cygpath -w "$srcfile"`'
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+ ;;
+
+ darwin* | rhapsody*)
+ _LT_DARWIN_LINKER_FEATURES($1)
+ ;;
+
+ dgux*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ freebsd1*)
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
+ # support. Future versions do this automatically, but an explicit c++rt0.o
+ # does not break anything, and helps significantly (at the cost of a little
+ # extra space).
+ freebsd2.2*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ # Unfortunately, older versions of FreeBSD 2 do not have this feature.
+ freebsd2*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
+ freebsd* | dragonfly*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ hpux9*)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ ;;
+
+ hpux10*)
+ if test "$GCC" = yes -a "$with_gnu_ld" = no; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+ fi
+ if test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='+b $libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ fi
+ ;;
+
+ hpux11*)
+ if test "$GCC" = yes -a "$with_gnu_ld" = no; then
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ else
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ fi
+ if test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ case $host_cpu in
+ hppa*64*|ia64*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+ *)
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ ;;
+ esac
+ fi
+ ;;
+
+ irix5* | irix6* | nonstopux*)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ # Try to use the -exported_symbol ld option, if it does not
+ # work, assume that -exports_file does not work either and
+ # implicitly export all symbols.
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+ AC_LINK_IFELSE(int foo(void) {},
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+ )
+ LDFLAGS="$save_LDFLAGS"
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
+ fi
+ _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(inherit_rpath, $1)=yes
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ ;;
+
+ netbsd* | netbsdelf*-gnu)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' # a.out
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$LD -shared -o $lib $libobjs $deplibs $linker_flags' # ELF
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ newsos6)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ *nto* | *qnx*)
+ ;;
+
+ openbsd*)
+ if test -f /usr/libexec/ld.so; then
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ else
+ case $host_os in
+ openbsd[[01]].* | openbsd2.[[0-7]] | openbsd2.[[0-7]].*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ ;;
+ esac
+ fi
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ os2*)
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(archive_cmds, $1)='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~$ECHO DATA >> $output_objdir/$libname.def~$ECHO " SINGLE NONSHARED" >> $output_objdir/$libname.def~$ECHO EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
+ _LT_TAGVAR(old_archive_from_new_cmds, $1)='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
+ ;;
+
+ osf3*)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ else
+ _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ fi
+ _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ ;;
+
+ osf4* | osf5*) # as osf3* with the addition of -msym flag
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ else
+ _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
+ $CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
+
+ # Both c and cxx compiler support -rpath directly
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+ fi
+ _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ ;;
+
+ solaris*)
+ _LT_TAGVAR(no_undefined_flag, $1)=' -z defs'
+ if test "$GCC" = yes; then
+ wlarc='${wl}'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -shared ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ else
+ case `$CC -V 2>&1` in
+ *"Compilers 5.0"*)
+ wlarc=''
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
+ ;;
+ *)
+ wlarc='${wl}'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ ;;
+ esac
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ case $host_os in
+ solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+ *)
+ # The compiler driver will combine and reorder linker options,
+ # but understands `-z linker_flag'. GCC discards it without `$wl',
+ # but is careful enough not to reorder.
+ # Supported since Solaris 2.6 (maybe 2.5.1?)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+ else
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+ fi
+ ;;
+ esac
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ ;;
+
+ sunos4*)
+ if test "x$host_vendor" = xsequent; then
+ # Use $CC to link under sequent, because it throws in some extra .o
+ # files that make .init and .fini sections work.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ sysv4)
+ case $host_vendor in
+ sni)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=yes # is this really true???
+ ;;
+ siemens)
+ ## LD is ld it makes a PLAMLIB
+ ## CC just makes a GrossModule.
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(reload_cmds, $1)='$CC -r -o $output$reload_objs'
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ ;;
+ motorola)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=no #Motorola manual says yes, but my tests say they lie
+ ;;
+ esac
+ runpath_var='LD_RUN_PATH'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ sysv4.3*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='-Bexport'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ runpath_var=LD_RUN_PATH
+ hardcode_runpath_var=yes
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ fi
+ ;;
+
+ sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ runpath_var='LD_RUN_PATH'
+
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ fi
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6*)
+ # Note: We can NOT use -z defs as we might desire, because we do not
+ # link with -lc, and that would cause any symbols used from libc to
+ # always be unresolved, which means just about no library would
+ # ever link correctly. If we're not using GNU ld we use -z text
+ # though, which does catch some bad symbols but isn't as heavy-handed
+ # as -z defs.
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+ runpath_var='LD_RUN_PATH'
+
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ fi
+ ;;
+
+ uts4*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ *)
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+
+ if test x$host_vendor = xsni; then
+ case $host in
+ sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Blargedynsym'
+ ;;
+ esac
+ fi
+ fi
+])
+AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+_LT_TAGVAR(with_gnu_ld, $1)=$with_gnu_ld
+
+_LT_DECL([], [libext], [0], [Old archive suffix (normally "a")])dnl
+_LT_DECL([], [shrext_cmds], [1], [Shared library suffix (normally ".so")])dnl
+_LT_DECL([], [extract_expsyms_cmds], [2],
+ [The commands to extract the exported symbol list from a shared archive])
+
+#
+# Do we need to explicitly link libc?
+#
+case "x$_LT_TAGVAR(archive_cmds_need_lc, $1)" in
+x|xyes)
+ # Assume -lc should be added
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+
+ if test "$enable_shared" = yes && test "$GCC" = yes; then
+ case $_LT_TAGVAR(archive_cmds, $1) in
+ *'~'*)
+ # FIXME: we may have to deal with multi-command sequences.
+ ;;
+ '$CC '*)
+ # Test whether the compiler implicitly links with -lc since on some
+ # systems, -lgcc has to come before -lc. If gcc already passes -lc
+ # to ld, don't add -lc before -lgcc.
+ AC_MSG_CHECKING([whether -lc should be explicitly linked in])
+ $RM conftest*
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ if AC_TRY_EVAL(ac_compile) 2>conftest.err; then
+ soname=conftest
+ lib=conftest
+ libobjs=conftest.$ac_objext
+ deplibs=
+ wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1)
+ pic_flag=$_LT_TAGVAR(lt_prog_compiler_pic, $1)
+ compiler_flags=-v
+ linker_flags=-v
+ verstring=
+ output_objdir=.
+ libname=conftest
+ lt_save_allow_undefined_flag=$_LT_TAGVAR(allow_undefined_flag, $1)
+ _LT_TAGVAR(allow_undefined_flag, $1)=
+ if AC_TRY_EVAL(_LT_TAGVAR(archive_cmds, $1) 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1)
+ then
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ else
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+ fi
+ _LT_TAGVAR(allow_undefined_flag, $1)=$lt_save_allow_undefined_flag
+ else
+ cat conftest.err 1>&5
+ fi
+ $RM conftest*
+ AC_MSG_RESULT([$_LT_TAGVAR(archive_cmds_need_lc, $1)])
+ ;;
+ esac
+ fi
+ ;;
+esac
+
+_LT_TAGDECL([build_libtool_need_lc], [archive_cmds_need_lc], [0],
+ [Whether or not to add -lc for building shared libraries])
+_LT_TAGDECL([allow_libtool_libs_with_static_runtimes],
+ [enable_shared_with_static_runtimes], [0],
+ [Whether or not to disallow shared libs when runtime libs are static])
+_LT_TAGDECL([], [export_dynamic_flag_spec], [1],
+ [Compiler flag to allow reflexive dlopens])
+_LT_TAGDECL([], [whole_archive_flag_spec], [1],
+ [Compiler flag to generate shared objects directly from archives])
+_LT_TAGDECL([], [compiler_needs_object], [1],
+ [Whether the compiler copes with passing no objects directly])
+_LT_TAGDECL([], [old_archive_from_new_cmds], [2],
+ [Create an old-style archive from a shared archive])
+_LT_TAGDECL([], [old_archive_from_expsyms_cmds], [2],
+ [Create a temporary old-style archive to link instead of a shared archive])
+_LT_TAGDECL([], [archive_cmds], [2], [Commands used to build a shared archive])
+_LT_TAGDECL([], [archive_expsym_cmds], [2])
+_LT_TAGDECL([], [module_cmds], [2],
+ [Commands used to build a loadable module if different from building
+ a shared archive.])
+_LT_TAGDECL([], [module_expsym_cmds], [2])
+_LT_TAGDECL([], [with_gnu_ld], [1],
+ [Whether we are building with GNU ld or not])
+_LT_TAGDECL([], [allow_undefined_flag], [1],
+ [Flag that allows shared libraries with undefined symbols to be built])
+_LT_TAGDECL([], [no_undefined_flag], [1],
+ [Flag that enforces no undefined symbols])
+_LT_TAGDECL([], [hardcode_libdir_flag_spec], [1],
+ [Flag to hardcode $libdir into a binary during linking.
+ This must work even if $libdir does not exist])
+_LT_TAGDECL([], [hardcode_libdir_flag_spec_ld], [1],
+ [[If ld is used when linking, flag to hardcode $libdir into a binary
+ during linking. This must work even if $libdir does not exist]])
+_LT_TAGDECL([], [hardcode_libdir_separator], [1],
+ [Whether we need a single "-rpath" flag with a separated argument])
+_LT_TAGDECL([], [hardcode_direct], [0],
+ [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+ DIR into the resulting binary])
+_LT_TAGDECL([], [hardcode_direct_absolute], [0],
+ [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+ DIR into the resulting binary and the resulting library dependency is
+ "absolute", i.e impossible to change by setting ${shlibpath_var} if the
+ library is relocated])
+_LT_TAGDECL([], [hardcode_minus_L], [0],
+ [Set to "yes" if using the -LDIR flag during linking hardcodes DIR
+ into the resulting binary])
+_LT_TAGDECL([], [hardcode_shlibpath_var], [0],
+ [Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
+ into the resulting binary])
+_LT_TAGDECL([], [hardcode_automatic], [0],
+ [Set to "yes" if building a shared library automatically hardcodes DIR
+ into the library and all subsequent libraries and executables linked
+ against it])
+_LT_TAGDECL([], [inherit_rpath], [0],
+ [Set to yes if linker adds runtime paths of dependent libraries
+ to runtime path list])
+_LT_TAGDECL([], [link_all_deplibs], [0],
+ [Whether libtool must link a program against all its dependency libraries])
+_LT_TAGDECL([], [fix_srcfile_path], [1],
+ [Fix the shell variable $srcfile for the compiler])
+_LT_TAGDECL([], [always_export_symbols], [0],
+ [Set to "yes" if exported symbols are required])
+_LT_TAGDECL([], [export_symbols_cmds], [2],
+ [The commands to list exported symbols])
+_LT_TAGDECL([], [exclude_expsyms], [1],
+ [Symbols that should not be listed in the preloaded symbols])
+_LT_TAGDECL([], [include_expsyms], [1],
+ [Symbols that must always be exported])
+_LT_TAGDECL([], [prelink_cmds], [2],
+ [Commands necessary for linking programs (against libraries) with templates])
+_LT_TAGDECL([], [file_list_spec], [1],
+ [Specify filename containing input files])
+dnl FIXME: Not yet implemented
+dnl _LT_TAGDECL([], [thread_safe_flag_spec], [1],
+dnl [Compiler flag to generate thread safe objects])
+])# _LT_LINKER_SHLIBS
+
+
+# _LT_LANG_C_CONFIG([TAG])
+# ------------------------
+# Ensure that the configuration variables for a C compiler are suitably
+# defined. These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_C_CONFIG],
+[m4_require([_LT_DECL_EGREP])dnl
+lt_save_CC="$CC"
+AC_LANG_PUSH(C)
+
+# Source file extension for C test sources.
+ac_ext=c
+
+# Object file extension for compiled C test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="int some_variable = 0;"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='int main(){return(0);}'
+
+_LT_TAG_COMPILER
+# Save the default compiler, since it gets overwritten when the other
+# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
+compiler_DEFAULT=$CC
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+if test -n "$compiler"; then
+ _LT_COMPILER_NO_RTTI($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+ LT_SYS_DLOPEN_SELF
+ _LT_CMD_STRIPLIB
+
+ # Report which library types will actually be built
+ AC_MSG_CHECKING([if libtool supports shared libraries])
+ AC_MSG_RESULT([$can_build_shared])
+
+ AC_MSG_CHECKING([whether to build shared libraries])
+ test "$can_build_shared" = "no" && enable_shared=no
+
+ # On AIX, shared libraries and static libraries use the same namespace, and
+ # are all built from PIC.
+ case $host_os in
+ aix3*)
+ test "$enable_shared" = yes && enable_static=no
+ if test -n "$RANLIB"; then
+ archive_cmds="$archive_cmds~\$RANLIB \$lib"
+ postinstall_cmds='$RANLIB $lib'
+ fi
+ ;;
+
+ aix[[4-9]]*)
+ if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+ test "$enable_shared" = yes && enable_static=no
+ fi
+ ;;
+ esac
+ AC_MSG_RESULT([$enable_shared])
+
+ AC_MSG_CHECKING([whether to build static libraries])
+ # Make sure either enable_shared or enable_static is yes.
+ test "$enable_shared" = yes || enable_static=yes
+ AC_MSG_RESULT([$enable_static])
+
+ _LT_CONFIG($1)
+fi
+AC_LANG_POP
+CC="$lt_save_CC"
+])# _LT_LANG_C_CONFIG
+
+
+# _LT_PROG_CXX
+# ------------
+# Since AC_PROG_CXX is broken, in that it returns g++ if there is no c++
+# compiler, we have our own version here.
+m4_defun([_LT_PROG_CXX],
+[
+pushdef([AC_MSG_ERROR], [_lt_caught_CXX_error=yes])
+AC_PROG_CXX
+if test -n "$CXX" && ( test "X$CXX" != "Xno" &&
+ ( (test "X$CXX" = "Xg++" && `g++ -v >/dev/null 2>&1` ) ||
+ (test "X$CXX" != "Xg++"))) ; then
+ AC_PROG_CXXCPP
+else
+ _lt_caught_CXX_error=yes
+fi
+popdef([AC_MSG_ERROR])
+])# _LT_PROG_CXX
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([_LT_PROG_CXX], [])
+
+
+# _LT_LANG_CXX_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a C++ compiler are suitably
+# defined. These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_CXX_CONFIG],
+[AC_REQUIRE([_LT_PROG_CXX])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+
+AC_LANG_PUSH(C++)
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(compiler_needs_object, $1)=no
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for C++ test sources.
+ac_ext=cpp
+
+# Object file extension for compiled C++ test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the CXX compiler isn't working. Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_caught_CXX_error" != yes; then
+ # Code to be used in simple compile tests
+ lt_simple_compile_test_code="int some_variable = 0;"
+
+ # Code to be used in simple link tests
+ lt_simple_link_test_code='int main(int, char *[[]]) { return(0); }'
+
+ # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+ _LT_TAG_COMPILER
+
+ # save warnings/boilerplate of simple test code
+ _LT_COMPILER_BOILERPLATE
+ _LT_LINKER_BOILERPLATE
+
+ # Allow CC to be a program name with arguments.
+ lt_save_CC=$CC
+ lt_save_LD=$LD
+ lt_save_GCC=$GCC
+ GCC=$GXX
+ lt_save_with_gnu_ld=$with_gnu_ld
+ lt_save_path_LD=$lt_cv_path_LD
+ if test -n "${lt_cv_prog_gnu_ldcxx+set}"; then
+ lt_cv_prog_gnu_ld=$lt_cv_prog_gnu_ldcxx
+ else
+ $as_unset lt_cv_prog_gnu_ld
+ fi
+ if test -n "${lt_cv_path_LDCXX+set}"; then
+ lt_cv_path_LD=$lt_cv_path_LDCXX
+ else
+ $as_unset lt_cv_path_LD
+ fi
+ test -z "${LDCXX+set}" || LD=$LDCXX
+ CC=${CXX-"c++"}
+ compiler=$CC
+ _LT_TAGVAR(compiler, $1)=$CC
+ _LT_CC_BASENAME([$compiler])
+
+ if test -n "$compiler"; then
+ # We don't want -fno-exception when compiling C++ code, so set the
+ # no_builtin_flag separately
+ if test "$GXX" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin'
+ else
+ _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+ fi
+
+ if test "$GXX" = yes; then
+ # Set up default GNU C++ configuration
+
+ LT_PATH_LD
+
+ # Check if GNU C++ uses GNU ld as the underlying linker, since the
+ # archiving commands below assume that GNU ld is being used.
+ if test "$with_gnu_ld" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+ # If archive_cmds runs LD, not CC, wlarc should be empty
+ # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to
+ # investigate it a little bit more. (MM)
+ wlarc='${wl}'
+
+ # ancient GNU ld didn't support --whole-archive et. al.
+ if eval "`$CC -print-prog-name=ld` --help 2>&1" |
+ $GREP 'no-whole-archive' > /dev/null; then
+ _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+ else
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ fi
+ else
+ with_gnu_ld=no
+ wlarc=
+
+ # A generic and very simple default shared library creation
+ # command for GNU C++ for the case where it uses the native
+ # linker, instead of GNU ld. If possible, this setting should
+ # overridden to take advantage of the native linker features on
+ # the platform it is being used on.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+ fi
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+
+ else
+ GXX=no
+ with_gnu_ld=no
+ wlarc=
+ fi
+
+ # PORTME: fill in a description of your system's C++ link characteristics
+ AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ case $host_os in
+ aix3*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ aix[[4-9]]*)
+ if test "$host_cpu" = ia64; then
+ # On IA64, the linker does run time linking by default, so we don't
+ # have to do anything special.
+ aix_use_runtimelinking=no
+ exp_sym_flag='-Bexport'
+ no_entry_flag=""
+ else
+ aix_use_runtimelinking=no
+
+ # Test if we are trying to use run time linking or normal
+ # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+ # need to do runtime linking.
+ case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+ for ld_flag in $LDFLAGS; do
+ case $ld_flag in
+ *-brtl*)
+ aix_use_runtimelinking=yes
+ break
+ ;;
+ esac
+ done
+ ;;
+ esac
+
+ exp_sym_flag='-bexport'
+ no_entry_flag='-bnoentry'
+ fi
+
+ # When large executables or shared objects are built, AIX ld can
+ # have problems creating the table of contents. If linking a library
+ # or program results in "error TOC overflow" add -mminimal-toc to
+ # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not
+ # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+ _LT_TAGVAR(archive_cmds, $1)=''
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+ if test "$GXX" = yes; then
+ case $host_os in aix4.[[012]]|aix4.[[012]].*)
+ # We only want to do this on AIX 4.2 and lower, the check
+ # below for broken collect2 doesn't work under 4.3+
+ collect2name=`${CC} -print-prog-name=collect2`
+ if test -f "$collect2name" &&
+ strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+ then
+ # We have reworked collect2
+ :
+ else
+ # We have old collect2
+ _LT_TAGVAR(hardcode_direct, $1)=unsupported
+ # It fails to find uninstalled libraries when the uninstalled
+ # path is not listed in the libpath. Setting hardcode_minus_L
+ # to unsupported forces relinking
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=
+ fi
+ esac
+ shared_flag='-shared'
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag="$shared_flag "'${wl}-G'
+ fi
+ else
+ # not using gcc
+ if test "$host_cpu" = ia64; then
+ # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+ # chokes on -Wl,-G. The following line is correct:
+ shared_flag='-G'
+ else
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag='${wl}-G'
+ else
+ shared_flag='${wl}-bM:SRE'
+ fi
+ fi
+ fi
+
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+ # It seems that -bexpall does not export symbols beginning with
+ # underscore (_), so it is better to generate a list of symbols to
+ # export.
+ _LT_TAGVAR(always_export_symbols, $1)=yes
+ if test "$aix_use_runtimelinking" = yes; then
+ # Warning - without using the other runtime loading flags (-brtl),
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+ # Determine the default libpath from the value encoded in an empty
+ # executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then $ECHO "X${wl}${allow_undefined_flag}" | $Xsed; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+ else
+ if test "$host_cpu" = ia64; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+ _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+ else
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+ # Warning - without using the other run time loading flags,
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+ # Exported symbols can be pulled into shared objects from archives
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+ # This is similar to how AIX traditionally builds its shared
+ # libraries.
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+ fi
+ fi
+ ;;
+
+ beos*)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+ # support --undefined. This deserves some investigation. FIXME
+ _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ chorus*)
+ case $cc_basename in
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+ # as there is no search path for DLLs.
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=no
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+
+ if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ # If the export-symbols file already is a .def file (1st line
+ # is EXPORTS), use it as is; otherwise, prepend...
+ _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ cp $export_symbols $output_objdir/$soname.def;
+ else
+ echo EXPORTS > $output_objdir/$soname.def;
+ cat $export_symbols >> $output_objdir/$soname.def;
+ fi~
+ $CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ darwin* | rhapsody*)
+ _LT_DARWIN_LINKER_FEATURES($1)
+ ;;
+
+ dgux*)
+ case $cc_basename in
+ ec++*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ ghcx*)
+ # Green Hills C++ Compiler
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ freebsd[[12]]*)
+ # C++ shared libraries reported to be fairly broken before
+ # switch to ELF
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ freebsd-elf*)
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ ;;
+
+ freebsd* | dragonfly*)
+ # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
+ # conventions
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ ;;
+
+ gnu*)
+ ;;
+
+ hpux9*)
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+ # but as the default
+ # location of the library.
+
+ case $cc_basename in
+ CC*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ aCC*)
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -b ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ *)
+ if test "$GXX" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -nostdlib -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ else
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ hpux10*|hpux11*)
+ if test $with_gnu_ld = no; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ case $host_cpu in
+ hppa*64*|ia64*)
+ ;;
+ *)
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ ;;
+ esac
+ fi
+ case $host_cpu in
+ hppa*64*|ia64*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+ *)
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+ # but as the default
+ # location of the library.
+ ;;
+ esac
+
+ case $cc_basename in
+ CC*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ aCC*)
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ esac
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ *)
+ if test "$GXX" = yes; then
+ if test $with_gnu_ld = no; then
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ esac
+ fi
+ else
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ interix[[3-9]]*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+ # Instead, shared libraries are loaded at an image base (0x10000000 by
+ # default) and relocated if they conflict, which is a slow very memory
+ # consuming and fragmenting process. To avoid this, we pick a random,
+ # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+ # time. Moving up from 0x10000000 also allows more sbrk(2) space.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ ;;
+ irix5* | irix6*)
+ case $cc_basename in
+ CC*)
+ # SGI C++
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -all -multigot $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+
+ # Archives containing C++ object files must be created using
+ # "CC -ar", where "CC" is the IRIX C++ compiler. This is
+ # necessary to make sure instantiated templates are included
+ # in the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -ar -WR,-u -o $oldlib $oldobjs'
+ ;;
+ *)
+ if test "$GXX" = yes; then
+ if test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` -o $lib'
+ fi
+ fi
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ ;;
+ esac
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(inherit_rpath, $1)=yes
+ ;;
+
+ linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ case $cc_basename in
+ KCC*)
+ # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+ # KCC will only create a shared library if the output file
+ # ends with ".so" (or ".sl" for HP-UX), so rename the library
+ # to its proper name (with version) after linking.
+ _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib ${wl}-retain-symbols-file,$export_symbols; mv \$templib $lib'
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 | $GREP "ld"`; rm -f libconftest$shared_ext; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+ # Archives containing C++ object files must be created using
+ # "CC -Bstatic", where "CC" is the KAI C++ compiler.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs'
+ ;;
+ icpc* | ecpc* )
+ # Intel C++
+ with_gnu_ld=yes
+ # version 8.0 and above of icpc choke on multiply defined symbols
+ # if we add $predep_objects and $postdep_objects, however 7.1 and
+ # earlier do not add the objects themselves.
+ case `$CC -V 2>&1` in
+ *"Version 7."*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ ;;
+ *) # Version 8.0 or newer
+ tmp_idyn=
+ case $host_cpu in
+ ia64*) tmp_idyn=' -i_dynamic';;
+ esac
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ ;;
+ esac
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+ ;;
+ pgCC* | pgcpp*)
+ # Portland Group C++ compiler
+ case `$CC -V` in
+ *pgCC\ [[1-5]]* | *pgcpp\ [[1-5]]*)
+ _LT_TAGVAR(prelink_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $objs $libobjs $compile_deplibs~
+ compile_command="$compile_command `find $tpldir -name \*.o | $NL2SP`"'
+ _LT_TAGVAR(old_archive_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $oldobjs$old_deplibs~
+ $AR $AR_FLAGS $oldlib$oldobjs$old_deplibs `find $tpldir -name \*.o | $NL2SP`~
+ $RANLIB $oldlib'
+ _LT_TAGVAR(archive_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+ $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+ $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+ ;;
+ *) # Version 6 will use weak symbols
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+ ;;
+ esac
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}--rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ ;;
+ cxx*)
+ # Compaq C++
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib ${wl}-retain-symbols-file $wl$export_symbols'
+
+ runpath_var=LD_RUN_PATH
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld"`; templist=`$ECHO "X$templist" | $Xsed -e "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ xl*)
+ # IBM XL 8.0 on PPC, with GNU ld
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ if test "x$supports_anon_versioning" = xyes; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+ fi
+ ;;
+ *)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C++ 5.9
+ _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file ${wl}$export_symbols'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ _LT_TAGVAR(compiler_needs_object, $1)=yes
+
+ # Not sure whether something based on
+ # $CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1
+ # would be better.
+ output_verbose_link_cmd='echo'
+
+ # Archives containing C++ object files must be created using
+ # "CC -xar", where "CC" is the Sun C++ compiler. This is
+ # necessary to make sure instantiated templates are included
+ # in the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+
+ lynxos*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ m88k*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ mvs*)
+ case $cc_basename in
+ cxx*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ netbsd*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags'
+ wlarc=
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ fi
+ # Workaround some broken pre-1.5 toolchains
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP conftest.$objext | $SED -e "s:-lgcc -lc -lgcc::"'
+ ;;
+
+ *nto* | *qnx*)
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ ;;
+
+ openbsd2*)
+ # C++ shared libraries are fairly broken
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ openbsd*)
+ if test -f /usr/libexec/ld.so; then
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file,$export_symbols -o $lib'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+ fi
+ output_verbose_link_cmd=echo
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ osf3* | osf4* | osf5*)
+ case $cc_basename in
+ KCC*)
+ # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+ # KCC will only create a shared library if the output file
+ # ends with ".so" (or ".sl" for HP-UX), so rename the library
+ # to its proper name (with version) after linking.
+ _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo "$lib" | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Archives containing C++ object files must be created using
+ # the KAI C++ compiler.
+ case $host in
+ osf3*) _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs' ;;
+ *) _LT_TAGVAR(old_archive_cmds, $1)='$CC -o $oldlib $oldobjs' ;;
+ esac
+ ;;
+ RCC*)
+ # Rational C++ 2.4.1
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ cxx*)
+ case $host in
+ osf3*)
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $soname `test -n "$verstring" && $ECHO "X${wl}-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ ;;
+ *)
+ _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done~
+ echo "-hidden">> $lib.exp~
+ $CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname ${wl}-input ${wl}$lib.exp `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib~
+ $RM $lib.exp'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+ ;;
+ esac
+
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld" | $GREP -v "ld:"`; templist=`$ECHO "X$templist" | $Xsed -e "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ *)
+ if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ case $host in
+ osf3*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ ;;
+ esac
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+
+ else
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ psos*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ sunos4*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.x
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ lcc*)
+ # Lucid
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ solaris*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.2, 5.x and Centerline C++
+ _LT_TAGVAR(archive_cmds_need_lc,$1)=yes
+ _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -G${allow_undefined_flag} ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ case $host_os in
+ solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+ *)
+ # The compiler driver will combine and reorder linker options,
+ # but understands `-z linker_flag'.
+ # Supported since Solaris 2.6 (maybe 2.5.1?)
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+ ;;
+ esac
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+
+ output_verbose_link_cmd='echo'
+
+ # Archives containing C++ object files must be created using
+ # "CC -xar", where "CC" is the Sun C++ compiler. This is
+ # necessary to make sure instantiated templates are included
+ # in the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+ ;;
+ gcx*)
+ # Green Hills C++ Compiler
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+
+ # The C++ compiler must be used to create the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
+ ;;
+ *)
+ # GNU C++ compiler with Solaris linker
+ if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-z ${wl}defs'
+ if $CC --version | $GREP -v '^2\.7' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+ else
+ # g++ 2.7 appears to require `-G' NOT `-shared' on this
+ # platform.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+ fi
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $wl$libdir'
+ case $host_os in
+ solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+ *)
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+ ;;
+ esac
+ fi
+ ;;
+ esac
+ ;;
+
+ sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ runpath_var='LD_RUN_PATH'
+
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6*)
+ # Note: We can NOT use -z defs as we might desire, because we do not
+ # link with -lc, and that would cause any symbols used from libc to
+ # always be unresolved, which means just about no library would
+ # ever link correctly. If we're not using GNU ld we use -z text
+ # though, which does catch some bad symbols but isn't as heavy-handed
+ # as -z defs.
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+ runpath_var='LD_RUN_PATH'
+
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ ;;
+
+ tandem*)
+ case $cc_basename in
+ NCC*)
+ # NonStop-UX NCC 3.20
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ vxworks*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+
+ AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+ test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+ _LT_TAGVAR(GCC, $1)="$GXX"
+ _LT_TAGVAR(LD, $1)="$LD"
+
+ ## CAVEAT EMPTOR:
+ ## There is no encapsulation within the following macros, do not change
+ ## the running order or otherwise move them around unless you know exactly
+ ## what you are doing...
+ _LT_SYS_HIDDEN_LIBDEPS($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+ fi # test -n "$compiler"
+
+ CC=$lt_save_CC
+ LDCXX=$LD
+ LD=$lt_save_LD
+ GCC=$lt_save_GCC
+ with_gnu_ld=$lt_save_with_gnu_ld
+ lt_cv_path_LDCXX=$lt_cv_path_LD
+ lt_cv_path_LD=$lt_save_path_LD
+ lt_cv_prog_gnu_ldcxx=$lt_cv_prog_gnu_ld
+ lt_cv_prog_gnu_ld=$lt_save_with_gnu_ld
+fi # test "$_lt_caught_CXX_error" != yes
+
+AC_LANG_POP
+])# _LT_LANG_CXX_CONFIG
+
+
+# _LT_SYS_HIDDEN_LIBDEPS([TAGNAME])
+# ---------------------------------
+# Figure out "hidden" library dependencies from verbose
+# compiler output when linking a shared library.
+# Parse the compiler output and extract the necessary
+# objects, libraries and library flags.
+m4_defun([_LT_SYS_HIDDEN_LIBDEPS],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+# Dependencies to place before and after the object being linked:
+_LT_TAGVAR(predep_objects, $1)=
+_LT_TAGVAR(postdep_objects, $1)=
+_LT_TAGVAR(predeps, $1)=
+_LT_TAGVAR(postdeps, $1)=
+_LT_TAGVAR(compiler_lib_search_path, $1)=
+
+dnl we can't use the lt_simple_compile_test_code here,
+dnl because it contains code intended for an executable,
+dnl not a library. It's possible we should let each
+dnl tag define a new lt_????_link_test_code variable,
+dnl but it's only used here...
+m4_if([$1], [], [cat > conftest.$ac_ext <<_LT_EOF
+int a;
+void foo (void) { a = 0; }
+_LT_EOF
+], [$1], [CXX], [cat > conftest.$ac_ext <<_LT_EOF
+class Foo
+{
+public:
+ Foo (void) { a = 0; }
+private:
+ int a;
+};
+_LT_EOF
+], [$1], [F77], [cat > conftest.$ac_ext <<_LT_EOF
+ subroutine foo
+ implicit none
+ integer*4 a
+ a=0
+ return
+ end
+_LT_EOF
+], [$1], [FC], [cat > conftest.$ac_ext <<_LT_EOF
+ subroutine foo
+ implicit none
+ integer a
+ a=0
+ return
+ end
+_LT_EOF
+], [$1], [GCJ], [cat > conftest.$ac_ext <<_LT_EOF
+public class foo {
+ private int a;
+ public void bar (void) {
+ a = 0;
+ }
+};
+_LT_EOF
+])
+dnl Parse the compiler output and extract the necessary
+dnl objects, libraries and library flags.
+if AC_TRY_EVAL(ac_compile); then
+ # Parse the compiler output and extract the necessary
+ # objects, libraries and library flags.
+
+ # Sentinel used to keep track of whether or not we are before
+ # the conftest object file.
+ pre_test_object_deps_done=no
+
+ for p in `eval "$output_verbose_link_cmd"`; do
+ case $p in
+
+ -L* | -R* | -l*)
+ # Some compilers place space between "-{L,R}" and the path.
+ # Remove the space.
+ if test $p = "-L" ||
+ test $p = "-R"; then
+ prev=$p
+ continue
+ else
+ prev=
+ fi
+
+ if test "$pre_test_object_deps_done" = no; then
+ case $p in
+ -L* | -R*)
+ # Internal compiler library paths should come after those
+ # provided the user. The postdeps already come after the
+ # user supplied libs so there is no need to process them.
+ if test -z "$_LT_TAGVAR(compiler_lib_search_path, $1)"; then
+ _LT_TAGVAR(compiler_lib_search_path, $1)="${prev}${p}"
+ else
+ _LT_TAGVAR(compiler_lib_search_path, $1)="${_LT_TAGVAR(compiler_lib_search_path, $1)} ${prev}${p}"
+ fi
+ ;;
+ # The "-l" case would never come before the object being
+ # linked, so don't bother handling this case.
+ esac
+ else
+ if test -z "$_LT_TAGVAR(postdeps, $1)"; then
+ _LT_TAGVAR(postdeps, $1)="${prev}${p}"
+ else
+ _LT_TAGVAR(postdeps, $1)="${_LT_TAGVAR(postdeps, $1)} ${prev}${p}"
+ fi
+ fi
+ ;;
+
+ *.$objext)
+ # This assumes that the test object file only shows up
+ # once in the compiler output.
+ if test "$p" = "conftest.$objext"; then
+ pre_test_object_deps_done=yes
+ continue
+ fi
+
+ if test "$pre_test_object_deps_done" = no; then
+ if test -z "$_LT_TAGVAR(predep_objects, $1)"; then
+ _LT_TAGVAR(predep_objects, $1)="$p"
+ else
+ _LT_TAGVAR(predep_objects, $1)="$_LT_TAGVAR(predep_objects, $1) $p"
+ fi
+ else
+ if test -z "$_LT_TAGVAR(postdep_objects, $1)"; then
+ _LT_TAGVAR(postdep_objects, $1)="$p"
+ else
+ _LT_TAGVAR(postdep_objects, $1)="$_LT_TAGVAR(postdep_objects, $1) $p"
+ fi
+ fi
+ ;;
+
+ *) ;; # Ignore the rest.
+
+ esac
+ done
+
+ # Clean up.
+ rm -f a.out a.exe
+else
+ echo "libtool.m4: error: problem compiling $1 test program"
+fi
+
+$RM -f confest.$objext
+
+# PORTME: override above test on systems where it is broken
+m4_if([$1], [CXX],
+[case $host_os in
+interix[[3-9]]*)
+ # Interix 3.5 installs completely hosed .la files for C++, so rather than
+ # hack all around it, let's just trust "g++" to DTRT.
+ _LT_TAGVAR(predep_objects,$1)=
+ _LT_TAGVAR(postdep_objects,$1)=
+ _LT_TAGVAR(postdeps,$1)=
+ ;;
+
+linux*)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C++ 5.9
+
+ # The more standards-conforming stlport4 library is
+ # incompatible with the Cstd library. Avoid specifying
+ # it if it's in CXXFLAGS. Ignore libCrun as
+ # -library=stlport4 depends on it.
+ case " $CXX $CXXFLAGS " in
+ *" -library=stlport4 "*)
+ solaris_use_stlport4=yes
+ ;;
+ esac
+
+ if test "$solaris_use_stlport4" != yes; then
+ _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+ fi
+ ;;
+ esac
+ ;;
+
+solaris*)
+ case $cc_basename in
+ CC*)
+ # The more standards-conforming stlport4 library is
+ # incompatible with the Cstd library. Avoid specifying
+ # it if it's in CXXFLAGS. Ignore libCrun as
+ # -library=stlport4 depends on it.
+ case " $CXX $CXXFLAGS " in
+ *" -library=stlport4 "*)
+ solaris_use_stlport4=yes
+ ;;
+ esac
+
+ # Adding this requires a known-good setup of shared libraries for
+ # Sun compiler versions before 5.6, else PIC objects from an old
+ # archive will be linked into the output, leading to subtle bugs.
+ if test "$solaris_use_stlport4" != yes; then
+ _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+ fi
+ ;;
+ esac
+ ;;
+esac
+])
+
+case " $_LT_TAGVAR(postdeps, $1) " in
+*" -lc "*) _LT_TAGVAR(archive_cmds_need_lc, $1)=no ;;
+esac
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=
+if test -n "${_LT_TAGVAR(compiler_lib_search_path, $1)}"; then
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=`echo " ${_LT_TAGVAR(compiler_lib_search_path, $1)}" | ${SED} -e 's! -L! !g' -e 's!^ !!'`
+fi
+_LT_TAGDECL([], [compiler_lib_search_dirs], [1],
+ [The directories searched by this compiler when creating a shared library])
+_LT_TAGDECL([], [predep_objects], [1],
+ [Dependencies to place before and after the objects being linked to
+ create a shared library])
+_LT_TAGDECL([], [postdep_objects], [1])
+_LT_TAGDECL([], [predeps], [1])
+_LT_TAGDECL([], [postdeps], [1])
+_LT_TAGDECL([], [compiler_lib_search_path], [1],
+ [The library search path used internally by the compiler when linking
+ a shared library])
+])# _LT_SYS_HIDDEN_LIBDEPS
+
+
+# _LT_PROG_F77
+# ------------
+# Since AC_PROG_F77 is broken, in that it returns the empty string
+# if there is no fortran compiler, we have our own version here.
+m4_defun([_LT_PROG_F77],
+[
+pushdef([AC_MSG_ERROR], [_lt_disable_F77=yes])
+AC_PROG_F77
+if test -z "$F77" || test "X$F77" = "Xno"; then
+ _lt_disable_F77=yes
+fi
+popdef([AC_MSG_ERROR])
+])# _LT_PROG_F77
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([_LT_PROG_F77], [])
+
+
+# _LT_LANG_F77_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a Fortran 77 compiler are
+# suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_F77_CONFIG],
+[AC_REQUIRE([_LT_PROG_F77])dnl
+AC_LANG_PUSH(Fortran 77)
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for f77 test sources.
+ac_ext=f
+
+# Object file extension for compiled f77 test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the F77 compiler isn't working. Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_F77" != yes; then
+ # Code to be used in simple compile tests
+ lt_simple_compile_test_code="\
+ subroutine t
+ return
+ end
+"
+
+ # Code to be used in simple link tests
+ lt_simple_link_test_code="\
+ program t
+ end
+"
+
+ # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+ _LT_TAG_COMPILER
+
+ # save warnings/boilerplate of simple test code
+ _LT_COMPILER_BOILERPLATE
+ _LT_LINKER_BOILERPLATE
+
+ # Allow CC to be a program name with arguments.
+ lt_save_CC="$CC"
+ lt_save_GCC=$GCC
+ CC=${F77-"f77"}
+ compiler=$CC
+ _LT_TAGVAR(compiler, $1)=$CC
+ _LT_CC_BASENAME([$compiler])
+ GCC=$G77
+ if test -n "$compiler"; then
+ AC_MSG_CHECKING([if libtool supports shared libraries])
+ AC_MSG_RESULT([$can_build_shared])
+
+ AC_MSG_CHECKING([whether to build shared libraries])
+ test "$can_build_shared" = "no" && enable_shared=no
+
+ # On AIX, shared libraries and static libraries use the same namespace, and
+ # are all built from PIC.
+ case $host_os in
+ aix3*)
+ test "$enable_shared" = yes && enable_static=no
+ if test -n "$RANLIB"; then
+ archive_cmds="$archive_cmds~\$RANLIB \$lib"
+ postinstall_cmds='$RANLIB $lib'
+ fi
+ ;;
+ aix[[4-9]]*)
+ if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+ test "$enable_shared" = yes && enable_static=no
+ fi
+ ;;
+ esac
+ AC_MSG_RESULT([$enable_shared])
+
+ AC_MSG_CHECKING([whether to build static libraries])
+ # Make sure either enable_shared or enable_static is yes.
+ test "$enable_shared" = yes || enable_static=yes
+ AC_MSG_RESULT([$enable_static])
+
+ _LT_TAGVAR(GCC, $1)="$G77"
+ _LT_TAGVAR(LD, $1)="$LD"
+
+ ## CAVEAT EMPTOR:
+ ## There is no encapsulation within the following macros, do not change
+ ## the running order or otherwise move them around unless you know exactly
+ ## what you are doing...
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+ fi # test -n "$compiler"
+
+ GCC=$lt_save_GCC
+ CC="$lt_save_CC"
+fi # test "$_lt_disable_F77" != yes
+
+AC_LANG_POP
+])# _LT_LANG_F77_CONFIG
+
+
+# _LT_PROG_FC
+# -----------
+# Since AC_PROG_FC is broken, in that it returns the empty string
+# if there is no fortran compiler, we have our own version here.
+m4_defun([_LT_PROG_FC],
+[
+pushdef([AC_MSG_ERROR], [_lt_disable_FC=yes])
+AC_PROG_FC
+if test -z "$FC" || test "X$FC" = "Xno"; then
+ _lt_disable_FC=yes
+fi
+popdef([AC_MSG_ERROR])
+])# _LT_PROG_FC
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([_LT_PROG_FC], [])
+
+
+# _LT_LANG_FC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for a Fortran compiler are
+# suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_FC_CONFIG],
+[AC_REQUIRE([_LT_PROG_FC])dnl
+AC_LANG_PUSH(Fortran)
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for fc test sources.
+ac_ext=${ac_fc_srcext-f}
+
+# Object file extension for compiled fc test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the FC compiler isn't working. Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_FC" != yes; then
+ # Code to be used in simple compile tests
+ lt_simple_compile_test_code="\
+ subroutine t
+ return
+ end
+"
+
+ # Code to be used in simple link tests
+ lt_simple_link_test_code="\
+ program t
+ end
+"
+
+ # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+ _LT_TAG_COMPILER
+
+ # save warnings/boilerplate of simple test code
+ _LT_COMPILER_BOILERPLATE
+ _LT_LINKER_BOILERPLATE
+
+ # Allow CC to be a program name with arguments.
+ lt_save_CC="$CC"
+ lt_save_GCC=$GCC
+ CC=${FC-"f95"}
+ compiler=$CC
+ GCC=$ac_cv_fc_compiler_gnu
+
+ _LT_TAGVAR(compiler, $1)=$CC
+ _LT_CC_BASENAME([$compiler])
+
+ if test -n "$compiler"; then
+ AC_MSG_CHECKING([if libtool supports shared libraries])
+ AC_MSG_RESULT([$can_build_shared])
+
+ AC_MSG_CHECKING([whether to build shared libraries])
+ test "$can_build_shared" = "no" && enable_shared=no
+
+ # On AIX, shared libraries and static libraries use the same namespace, and
+ # are all built from PIC.
+ case $host_os in
+ aix3*)
+ test "$enable_shared" = yes && enable_static=no
+ if test -n "$RANLIB"; then
+ archive_cmds="$archive_cmds~\$RANLIB \$lib"
+ postinstall_cmds='$RANLIB $lib'
+ fi
+ ;;
+ aix[[4-9]]*)
+ if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+ test "$enable_shared" = yes && enable_static=no
+ fi
+ ;;
+ esac
+ AC_MSG_RESULT([$enable_shared])
+
+ AC_MSG_CHECKING([whether to build static libraries])
+ # Make sure either enable_shared or enable_static is yes.
+ test "$enable_shared" = yes || enable_static=yes
+ AC_MSG_RESULT([$enable_static])
+
+ _LT_TAGVAR(GCC, $1)="$ac_cv_fc_compiler_gnu"
+ _LT_TAGVAR(LD, $1)="$LD"
+
+ ## CAVEAT EMPTOR:
+ ## There is no encapsulation within the following macros, do not change
+ ## the running order or otherwise move them around unless you know exactly
+ ## what you are doing...
+ _LT_SYS_HIDDEN_LIBDEPS($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+ fi # test -n "$compiler"
+
+ GCC=$lt_save_GCC
+ CC="$lt_save_CC"
+fi # test "$_lt_disable_FC" != yes
+
+AC_LANG_POP
+])# _LT_LANG_FC_CONFIG
+
+
+# _LT_LANG_GCJ_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for the GNU Java Compiler compiler
+# are suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_GCJ_CONFIG],
+[AC_REQUIRE([LT_PROG_GCJ])dnl
+AC_LANG_SAVE
+
+# Source file extension for Java test sources.
+ac_ext=java
+
+# Object file extension for compiled Java test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="class foo {}"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='public class conftest { public static void main(String[[]] argv) {}; }'
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC="$CC"
+lt_save_GCC=$GCC
+GCC=yes
+CC=${GCJ-"gcj"}
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_TAGVAR(LD, $1)="$LD"
+_LT_CC_BASENAME([$compiler])
+
+# GCJ did not exist at the time GCC didn't implicitly link libc in.
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+
+if test -n "$compiler"; then
+ _LT_COMPILER_NO_RTTI($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+fi
+
+AC_LANG_RESTORE
+
+GCC=$lt_save_GCC
+CC="$lt_save_CC"
+])# _LT_LANG_GCJ_CONFIG
+
+
+# _LT_LANG_RC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for the Windows resource compiler
+# are suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_RC_CONFIG],
+[AC_REQUIRE([LT_PROG_RC])dnl
+AC_LANG_SAVE
+
+# Source file extension for RC test sources.
+ac_ext=rc
+
+# Object file extension for compiled RC test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code='sample MENU { MENUITEM "&Soup", 100, CHECKED }'
+
+# Code to be used in simple link tests
+lt_simple_link_test_code="$lt_simple_compile_test_code"
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC="$CC"
+lt_save_GCC=$GCC
+GCC=
+CC=${RC-"windres"}
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_CC_BASENAME([$compiler])
+_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+
+if test -n "$compiler"; then
+ :
+ _LT_CONFIG($1)
+fi
+
+GCC=$lt_save_GCC
+AC_LANG_RESTORE
+CC="$lt_save_CC"
+])# _LT_LANG_RC_CONFIG
+
+
+# LT_PROG_GCJ
+# -----------
+AC_DEFUN([LT_PROG_GCJ],
+[m4_ifdef([AC_PROG_GCJ], [AC_PROG_GCJ],
+ [m4_ifdef([A][M_PROG_GCJ], [A][M_PROG_GCJ],
+ [AC_CHECK_TOOL(GCJ, gcj,)
+ test "x${GCJFLAGS+set}" = xset || GCJFLAGS="-g -O2"
+ AC_SUBST(GCJFLAGS)])])[]dnl
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_GCJ], [LT_PROG_GCJ])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_GCJ], [])
+
+
+# LT_PROG_RC
+# ----------
+AC_DEFUN([LT_PROG_RC],
+[AC_CHECK_TOOL(RC, windres,)
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_RC], [LT_PROG_RC])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_RC], [])
+
+
+# _LT_DECL_EGREP
+# --------------
+# If we don't have a new enough Autoconf to choose the best grep
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_EGREP],
+[AC_REQUIRE([AC_PROG_EGREP])dnl
+AC_REQUIRE([AC_PROG_FGREP])dnl
+test -z "$GREP" && GREP=grep
+_LT_DECL([], [GREP], [1], [A grep program that handles long lines])
+_LT_DECL([], [EGREP], [1], [An ERE matcher])
+_LT_DECL([], [FGREP], [1], [A literal string matcher])
+dnl Non-bleeding-edge autoconf doesn't subst GREP, so do it here too
+AC_SUBST([GREP])
+])
+
+
+# _LT_DECL_OBJDUMP
+# --------------
+# If we don't have a new enough Autoconf to choose the best objdump
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_OBJDUMP],
+[AC_CHECK_TOOL(OBJDUMP, objdump, false)
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [1], [An object symbol dumper])
+AC_SUBST([OBJDUMP])
+])
+
+
+# _LT_DECL_SED
+# ------------
+# Check for a fully-functional sed program, that truncates
+# as few characters as possible. Prefer GNU sed if found.
+m4_defun([_LT_DECL_SED],
+[AC_PROG_SED
+test -z "$SED" && SED=sed
+Xsed="$SED -e 1s/^X//"
+_LT_DECL([], [SED], [1], [A sed program that does not truncate output])
+_LT_DECL([], [Xsed], ["\$SED -e 1s/^X//"],
+ [Sed that helps us avoid accidentally triggering echo(1) options like -n])
+])# _LT_DECL_SED
+
+m4_ifndef([AC_PROG_SED], [
+# NOTE: This macro has been submitted for inclusion into #
+# GNU Autoconf as AC_PROG_SED. When it is available in #
+# a released version of Autoconf we should remove this #
+# macro and use it instead. #
+
+m4_defun([AC_PROG_SED],
+[AC_MSG_CHECKING([for a sed that does not truncate output])
+AC_CACHE_VAL(lt_cv_path_SED,
+[# Loop through the user's path and test for sed and gsed.
+# Then use that list of sed's as ones to test for truncation.
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for lt_ac_prog in sed gsed; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if $as_executable_p "$as_dir/$lt_ac_prog$ac_exec_ext"; then
+ lt_ac_sed_list="$lt_ac_sed_list $as_dir/$lt_ac_prog$ac_exec_ext"
+ fi
+ done
+ done
+done
+IFS=$as_save_IFS
+lt_ac_max=0
+lt_ac_count=0
+# Add /usr/xpg4/bin/sed as it is typically found on Solaris
+# along with /bin/sed that truncates output.
+for lt_ac_sed in $lt_ac_sed_list /usr/xpg4/bin/sed; do
+ test ! -f $lt_ac_sed && continue
+ cat /dev/null > conftest.in
+ lt_ac_count=0
+ echo $ECHO_N "0123456789$ECHO_C" >conftest.in
+ # Check for GNU sed and select it if it is found.
+ if "$lt_ac_sed" --version 2>&1 < /dev/null | grep 'GNU' > /dev/null; then
+ lt_cv_path_SED=$lt_ac_sed
+ break
+ fi
+ while true; do
+ cat conftest.in conftest.in >conftest.tmp
+ mv conftest.tmp conftest.in
+ cp conftest.in conftest.nl
+ echo >>conftest.nl
+ $lt_ac_sed -e 's/a$//' < conftest.nl >conftest.out || break
+ cmp -s conftest.out conftest.nl || break
+ # 10000 chars as input seems more than enough
+ test $lt_ac_count -gt 10 && break
+ lt_ac_count=`expr $lt_ac_count + 1`
+ if test $lt_ac_count -gt $lt_ac_max; then
+ lt_ac_max=$lt_ac_count
+ lt_cv_path_SED=$lt_ac_sed
+ fi
+ done
+done
+])
+SED=$lt_cv_path_SED
+AC_SUBST([SED])
+AC_MSG_RESULT([$SED])
+])#AC_PROG_SED
+])#m4_ifndef
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_SED], [AC_PROG_SED])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_SED], [])
+
+
+# _LT_CHECK_SHELL_FEATURES
+# ------------------------
+# Find out whether the shell is Bourne or XSI compatible,
+# or has some other useful features.
+m4_defun([_LT_CHECK_SHELL_FEATURES],
+[AC_MSG_CHECKING([whether the shell understands some XSI constructs])
+# Try some XSI features
+xsi_shell=no
+( _lt_dummy="a/b/c"
+ test "${_lt_dummy##*/},${_lt_dummy%/*},"${_lt_dummy%"$_lt_dummy"}, \
+ = c,a/b,, \
+ && eval 'test $(( 1 + 1 )) -eq 2 \
+ && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
+ && xsi_shell=yes
+AC_MSG_RESULT([$xsi_shell])
+_LT_CONFIG_LIBTOOL_INIT([xsi_shell='$xsi_shell'])
+
+AC_MSG_CHECKING([whether the shell understands "+="])
+lt_shell_append=no
+( foo=bar; set foo baz; eval "$[1]+=\$[2]" && test "$foo" = barbaz ) \
+ >/dev/null 2>&1 \
+ && lt_shell_append=yes
+AC_MSG_RESULT([$lt_shell_append])
+_LT_CONFIG_LIBTOOL_INIT([lt_shell_append='$lt_shell_append'])
+
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+ lt_unset=unset
+else
+ lt_unset=false
+fi
+_LT_DECL([], [lt_unset], [0], [whether the shell understands "unset"])dnl
+
+# test EBCDIC or ASCII
+case `echo X|tr X '\101'` in
+ A) # ASCII based system
+ # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
+ lt_SP2NL='tr \040 \012'
+ lt_NL2SP='tr \015\012 \040\040'
+ ;;
+ *) # EBCDIC based system
+ lt_SP2NL='tr \100 \n'
+ lt_NL2SP='tr \r\n \100\100'
+ ;;
+esac
+_LT_DECL([SP2NL], [lt_SP2NL], [1], [turn spaces into newlines])dnl
+_LT_DECL([NL2SP], [lt_NL2SP], [1], [turn newlines into spaces])dnl
+])# _LT_CHECK_SHELL_FEATURES
+
+
+# _LT_PROG_XSI_SHELLFNS
+# ---------------------
+# Bourne and XSI compatible variants of some useful shell functions.
+m4_defun([_LT_PROG_XSI_SHELLFNS],
+[case $xsi_shell in
+ yes)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE. If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac
+}
+
+# func_basename file
+func_basename ()
+{
+ func_basename_result="${1##*/}"
+}
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+# dirname: Compute the dirname of FILE. If nonempty,
+# add APPEND to the result, otherwise set result
+# to NONDIR_REPLACEMENT.
+# value returned in "$func_dirname_result"
+# basename: Compute filename of FILE.
+# value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac
+ func_basename_result="${1##*/}"
+}
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+func_stripname ()
+{
+ # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
+ # positional parameters, so assign one to ordinary parameter first.
+ func_stripname_result=${3}
+ func_stripname_result=${func_stripname_result#"${1}"}
+ func_stripname_result=${func_stripname_result%"${2}"}
+}
+
+# func_opt_split
+func_opt_split ()
+{
+ func_opt_split_opt=${1%%=*}
+ func_opt_split_arg=${1#*=}
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+ case ${1} in
+ *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
+ *) func_lo2o_result=${1} ;;
+ esac
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+ func_xform_result=${1%.*}.lo
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+ func_arith_result=$(( $[*] ))
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+ func_len_result=${#1}
+}
+
+_LT_EOF
+ ;;
+ *) # Bourne compatible functions.
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE. If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+ # Extract subdirectory from the argument.
+ func_dirname_result=`$ECHO "X${1}" | $Xsed -e "$dirname"`
+ if test "X$func_dirname_result" = "X${1}"; then
+ func_dirname_result="${3}"
+ else
+ func_dirname_result="$func_dirname_result${2}"
+ fi
+}
+
+# func_basename file
+func_basename ()
+{
+ func_basename_result=`$ECHO "X${1}" | $Xsed -e "$basename"`
+}
+
+dnl func_dirname_and_basename
+dnl A portable version of this function is already defined in general.m4sh
+dnl so there is no need for it here.
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+# func_strip_suffix prefix name
+func_stripname ()
+{
+ case ${2} in
+ .*) func_stripname_result=`$ECHO "X${3}" \
+ | $Xsed -e "s%^${1}%%" -e "s%\\\\${2}\$%%"`;;
+ *) func_stripname_result=`$ECHO "X${3}" \
+ | $Xsed -e "s%^${1}%%" -e "s%${2}\$%%"`;;
+ esac
+}
+
+# sed scripts:
+my_sed_long_opt='1s/^\(-[[^=]]*\)=.*/\1/;q'
+my_sed_long_arg='1s/^-[[^=]]*=//'
+
+# func_opt_split
+func_opt_split ()
+{
+ func_opt_split_opt=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_opt"`
+ func_opt_split_arg=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_arg"`
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+ func_lo2o_result=`$ECHO "X${1}" | $Xsed -e "$lo2o"`
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+ func_xform_result=`$ECHO "X${1}" | $Xsed -e 's/\.[[^.]]*$/.lo/'`
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+ func_arith_result=`expr "$[@]"`
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+ func_len_result=`expr "$[1]" : ".*" 2>/dev/null || echo $max_cmd_len`
+}
+
+_LT_EOF
+esac
+
+case $lt_shell_append in
+ yes)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+ eval "$[1]+=\$[2]"
+}
+_LT_EOF
+ ;;
+ *)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+ eval "$[1]=\$$[1]\$[2]"
+}
+
+_LT_EOF
+ ;;
+ esac
+])
+
+# Helper functions for option handling. -*- Autoconf -*-
+#
+# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 6 ltoptions.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])])
+
+
+# _LT_MANGLE_OPTION(MACRO-NAME, OPTION-NAME)
+# ------------------------------------------
+m4_define([_LT_MANGLE_OPTION],
+[[_LT_OPTION_]m4_bpatsubst($1__$2, [[^a-zA-Z0-9_]], [_])])
+
+
+# _LT_SET_OPTION(MACRO-NAME, OPTION-NAME)
+# ---------------------------------------
+# Set option OPTION-NAME for macro MACRO-NAME, and if there is a
+# matching handler defined, dispatch to it. Other OPTION-NAMEs are
+# saved as a flag.
+m4_define([_LT_SET_OPTION],
+[m4_define(_LT_MANGLE_OPTION([$1], [$2]))dnl
+m4_ifdef(_LT_MANGLE_DEFUN([$1], [$2]),
+ _LT_MANGLE_DEFUN([$1], [$2]),
+ [m4_warning([Unknown $1 option `$2'])])[]dnl
+])
+
+
+# _LT_IF_OPTION(MACRO-NAME, OPTION-NAME, IF-SET, [IF-NOT-SET])
+# ------------------------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+m4_define([_LT_IF_OPTION],
+[m4_ifdef(_LT_MANGLE_OPTION([$1], [$2]), [$3], [$4])])
+
+
+# _LT_UNLESS_OPTIONS(MACRO-NAME, OPTION-LIST, IF-NOT-SET)
+# -------------------------------------------------------
+# Execute IF-NOT-SET unless all options in OPTION-LIST for MACRO-NAME
+# are set.
+m4_define([_LT_UNLESS_OPTIONS],
+[m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+ [m4_ifdef(_LT_MANGLE_OPTION([$1], _LT_Option),
+ [m4_define([$0_found])])])[]dnl
+m4_ifdef([$0_found], [m4_undefine([$0_found])], [$3
+])[]dnl
+])
+
+
+# _LT_SET_OPTIONS(MACRO-NAME, OPTION-LIST)
+# ----------------------------------------
+# OPTION-LIST is a space-separated list of Libtool options associated
+# with MACRO-NAME. If any OPTION has a matching handler declared with
+# LT_OPTION_DEFINE, dispatch to that macro; otherwise complain about
+# the unknown option and exit.
+m4_defun([_LT_SET_OPTIONS],
+[# Set options
+m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+ [_LT_SET_OPTION([$1], _LT_Option)])
+
+m4_if([$1],[LT_INIT],[
+ dnl
+ dnl Simply set some default values (i.e off) if boolean options were not
+ dnl specified:
+ _LT_UNLESS_OPTIONS([LT_INIT], [dlopen], [enable_dlopen=no
+ ])
+ _LT_UNLESS_OPTIONS([LT_INIT], [win32-dll], [enable_win32_dll=no
+ ])
+ dnl
+ dnl If no reference was made to various pairs of opposing options, then
+ dnl we run the default mode handler for the pair. For example, if neither
+ dnl `shared' nor `disable-shared' was passed, we enable building of shared
+ dnl archives by default:
+ _LT_UNLESS_OPTIONS([LT_INIT], [shared disable-shared], [_LT_ENABLE_SHARED])
+ _LT_UNLESS_OPTIONS([LT_INIT], [static disable-static], [_LT_ENABLE_STATIC])
+ _LT_UNLESS_OPTIONS([LT_INIT], [pic-only no-pic], [_LT_WITH_PIC])
+ _LT_UNLESS_OPTIONS([LT_INIT], [fast-install disable-fast-install],
+ [_LT_ENABLE_FAST_INSTALL])
+ ])
+])# _LT_SET_OPTIONS
+
+
+
+# _LT_MANGLE_DEFUN(MACRO-NAME, OPTION-NAME)
+# -----------------------------------------
+m4_define([_LT_MANGLE_DEFUN],
+[[_LT_OPTION_DEFUN_]m4_bpatsubst(m4_toupper([$1__$2]), [[^A-Z0-9_]], [_])])
+
+
+# LT_OPTION_DEFINE(MACRO-NAME, OPTION-NAME, CODE)
+# -----------------------------------------------
+m4_define([LT_OPTION_DEFINE],
+[m4_define(_LT_MANGLE_DEFUN([$1], [$2]), [$3])[]dnl
+])# LT_OPTION_DEFINE
+
+
+# dlopen
+# ------
+LT_OPTION_DEFINE([LT_INIT], [dlopen], [enable_dlopen=yes
+])
+
+AU_DEFUN([AC_LIBTOOL_DLOPEN],
+[_LT_SET_OPTION([LT_INIT], [dlopen])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `dlopen' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN], [])
+
+
+# win32-dll
+# ---------
+# Declare package support for building win32 dll's.
+LT_OPTION_DEFINE([LT_INIT], [win32-dll],
+[enable_win32_dll=yes
+
+case $host in
+*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-cegcc*)
+ AC_CHECK_TOOL(AS, as, false)
+ AC_CHECK_TOOL(DLLTOOL, dlltool, false)
+ AC_CHECK_TOOL(OBJDUMP, objdump, false)
+ ;;
+esac
+
+test -z "$AS" && AS=as
+_LT_DECL([], [AS], [0], [Assembler program])dnl
+
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+_LT_DECL([], [DLLTOOL], [0], [DLL creation program])dnl
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [0], [Object dumper program])dnl
+])# win32-dll
+
+AU_DEFUN([AC_LIBTOOL_WIN32_DLL],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+_LT_SET_OPTION([LT_INIT], [win32-dll])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `win32-dll' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_WIN32_DLL], [])
+
+
+# _LT_ENABLE_SHARED([DEFAULT])
+# ----------------------------
+# implement the --enable-shared flag, and supports the `shared' and
+# `disable-shared' LT_INIT options.
+# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_SHARED],
+[m4_define([_LT_ENABLE_SHARED_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([shared],
+ [AS_HELP_STRING([--enable-shared@<:@=PKGS@:>@],
+ [build shared libraries @<:@default=]_LT_ENABLE_SHARED_DEFAULT[@:>@])],
+ [p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_shared=yes ;;
+ no) enable_shared=no ;;
+ *)
+ enable_shared=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_shared=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac],
+ [enable_shared=]_LT_ENABLE_SHARED_DEFAULT)
+
+ _LT_DECL([build_libtool_libs], [enable_shared], [0],
+ [Whether or not to build shared libraries])
+])# _LT_ENABLE_SHARED
+
+LT_OPTION_DEFINE([LT_INIT], [shared], [_LT_ENABLE_SHARED([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-shared], [_LT_ENABLE_SHARED([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[shared])
+])
+
+AC_DEFUN([AC_DISABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], [disable-shared])
+])
+
+AU_DEFUN([AM_ENABLE_SHARED], [AC_ENABLE_SHARED($@)])
+AU_DEFUN([AM_DISABLE_SHARED], [AC_DISABLE_SHARED($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_SHARED], [])
+dnl AC_DEFUN([AM_DISABLE_SHARED], [])
+
+
+
+# _LT_ENABLE_STATIC([DEFAULT])
+# ----------------------------
+# implement the --enable-static flag, and support the `static' and
+# `disable-static' LT_INIT options.
+# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_STATIC],
+[m4_define([_LT_ENABLE_STATIC_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([static],
+ [AS_HELP_STRING([--enable-static@<:@=PKGS@:>@],
+ [build static libraries @<:@default=]_LT_ENABLE_STATIC_DEFAULT[@:>@])],
+ [p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_static=yes ;;
+ no) enable_static=no ;;
+ *)
+ enable_static=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_static=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac],
+ [enable_static=]_LT_ENABLE_STATIC_DEFAULT)
+
+ _LT_DECL([build_old_libs], [enable_static], [0],
+ [Whether or not to build static libraries])
+])# _LT_ENABLE_STATIC
+
+LT_OPTION_DEFINE([LT_INIT], [static], [_LT_ENABLE_STATIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-static], [_LT_ENABLE_STATIC([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[static])
+])
+
+AC_DEFUN([AC_DISABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], [disable-static])
+])
+
+AU_DEFUN([AM_ENABLE_STATIC], [AC_ENABLE_STATIC($@)])
+AU_DEFUN([AM_DISABLE_STATIC], [AC_DISABLE_STATIC($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_STATIC], [])
+dnl AC_DEFUN([AM_DISABLE_STATIC], [])
+
+
+
+# _LT_ENABLE_FAST_INSTALL([DEFAULT])
+# ----------------------------------
+# implement the --enable-fast-install flag, and support the `fast-install'
+# and `disable-fast-install' LT_INIT options.
+# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_FAST_INSTALL],
+[m4_define([_LT_ENABLE_FAST_INSTALL_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([fast-install],
+ [AS_HELP_STRING([--enable-fast-install@<:@=PKGS@:>@],
+ [optimize for fast installation @<:@default=]_LT_ENABLE_FAST_INSTALL_DEFAULT[@:>@])],
+ [p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_fast_install=yes ;;
+ no) enable_fast_install=no ;;
+ *)
+ enable_fast_install=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_fast_install=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac],
+ [enable_fast_install=]_LT_ENABLE_FAST_INSTALL_DEFAULT)
+
+_LT_DECL([fast_install], [enable_fast_install], [0],
+ [Whether or not to optimize for fast installation])dnl
+])# _LT_ENABLE_FAST_INSTALL
+
+LT_OPTION_DEFINE([LT_INIT], [fast-install], [_LT_ENABLE_FAST_INSTALL([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-fast-install], [_LT_ENABLE_FAST_INSTALL([no])])
+
+# Old names:
+AU_DEFUN([AC_ENABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `fast-install' option into LT_INIT's first parameter.])
+])
+
+AU_DEFUN([AC_DISABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], [disable-fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `disable-fast-install' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_ENABLE_FAST_INSTALL], [])
+dnl AC_DEFUN([AM_DISABLE_FAST_INSTALL], [])
+
+
+# _LT_WITH_PIC([MODE])
+# --------------------
+# implement the --with-pic flag, and support the `pic-only' and `no-pic'
+# LT_INIT options.
+# MODE is either `yes' or `no'. If omitted, it defaults to `both'.
+m4_define([_LT_WITH_PIC],
+[AC_ARG_WITH([pic],
+ [AS_HELP_STRING([--with-pic],
+ [try to use only PIC/non-PIC objects @<:@default=use both@:>@])],
+ [pic_mode="$withval"],
+ [pic_mode=default])
+
+test -z "$pic_mode" && pic_mode=m4_default([$1], [default])
+
+_LT_DECL([], [pic_mode], [0], [What type of objects to build])dnl
+])# _LT_WITH_PIC
+
+LT_OPTION_DEFINE([LT_INIT], [pic-only], [_LT_WITH_PIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [no-pic], [_LT_WITH_PIC([no])])
+
+# Old name:
+AU_DEFUN([AC_LIBTOOL_PICMODE],
+[_LT_SET_OPTION([LT_INIT], [pic-only])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `pic-only' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_PICMODE], [])
+
+
+m4_define([_LTDL_MODE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [nonrecursive],
+ [m4_define([_LTDL_MODE], [nonrecursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [recursive],
+ [m4_define([_LTDL_MODE], [recursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [subproject],
+ [m4_define([_LTDL_MODE], [subproject])])
+
+m4_define([_LTDL_TYPE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [installable],
+ [m4_define([_LTDL_TYPE], [installable])])
+LT_OPTION_DEFINE([LTDL_INIT], [convenience],
+ [m4_define([_LTDL_TYPE], [convenience])])
+
+# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*-
+#
+# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 6 ltsugar.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
+
+
+# lt_join(SEP, ARG1, [ARG2...])
+# -----------------------------
+# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
+# associated separator.
+# Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
+# versions in m4sugar had bugs.
+m4_define([lt_join],
+[m4_if([$#], [1], [],
+ [$#], [2], [[$2]],
+ [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
+m4_define([_lt_join],
+[m4_if([$#$2], [2], [],
+ [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
+
+
+# lt_car(LIST)
+# lt_cdr(LIST)
+# ------------
+# Manipulate m4 lists.
+# These macros are necessary as long as will still need to support
+# Autoconf-2.59 which quotes differently.
+m4_define([lt_car], [[$1]])
+m4_define([lt_cdr],
+[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
+ [$#], 1, [],
+ [m4_dquote(m4_shift($@))])])
+m4_define([lt_unquote], $1)
+
+
+# lt_append(MACRO-NAME, STRING, [SEPARATOR])
+# ------------------------------------------
+# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
+# Note that neither SEPARATOR nor STRING are expanded; they are appended
+# to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
+# No SEPARATOR is output if MACRO-NAME was previously undefined (different
+# than defined and empty).
+#
+# This macro is needed until we can rely on Autoconf 2.62, since earlier
+# versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
+m4_define([lt_append],
+[m4_define([$1],
+ m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
+
+
+
+# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
+# ----------------------------------------------------------
+# Produce a SEP delimited list of all paired combinations of elements of
+# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list
+# has the form PREFIXmINFIXSUFFIXn.
+# Needed until we can rely on m4_combine added in Autoconf 2.62.
+m4_define([lt_combine],
+[m4_if(m4_eval([$# > 3]), [1],
+ [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
+[[m4_foreach([_Lt_prefix], [$2],
+ [m4_foreach([_Lt_suffix],
+ ]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
+ [_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
+
+
+# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
+# -----------------------------------------------------------------------
+# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
+# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
+m4_define([lt_if_append_uniq],
+[m4_ifdef([$1],
+ [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
+ [lt_append([$1], [$2], [$3])$4],
+ [$5])],
+ [lt_append([$1], [$2], [$3])$4])])
+
+
+# lt_dict_add(DICT, KEY, VALUE)
+# -----------------------------
+m4_define([lt_dict_add],
+[m4_define([$1($2)], [$3])])
+
+
+# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
+# --------------------------------------------
+m4_define([lt_dict_add_subkey],
+[m4_define([$1($2:$3)], [$4])])
+
+
+# lt_dict_fetch(DICT, KEY, [SUBKEY])
+# ----------------------------------
+m4_define([lt_dict_fetch],
+[m4_ifval([$3],
+ m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
+ m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
+
+
+# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
+# -----------------------------------------------------------------
+m4_define([lt_if_dict_fetch],
+[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
+ [$5],
+ [$6])])
+
+
+# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
+# --------------------------------------------------------------
+m4_define([lt_dict_filter],
+[m4_if([$5], [], [],
+ [lt_join(m4_quote(m4_default([$4], [[, ]])),
+ lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
+ [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
+])
+
+# ltversion.m4 -- version numbers -*- Autoconf -*-
+#
+# Copyright (C) 2004 Free Software Foundation, Inc.
+# Written by Scott James Remnant, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# Generated from ltversion.in.
+
+# serial 3017 ltversion.m4
+# This file is part of GNU Libtool
+
+m4_define([LT_PACKAGE_VERSION], [2.2.6b])
+m4_define([LT_PACKAGE_REVISION], [1.3017])
+
+AC_DEFUN([LTVERSION_VERSION],
+[macro_version='2.2.6b'
+macro_revision='1.3017'
+_LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?])
+_LT_DECL(, macro_revision, 0)
+])
+
+# lt~obsolete.m4 -- aclocal satisfying obsolete definitions. -*-Autoconf-*-
+#
+# Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
+# Written by Scott James Remnant, 2004.
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 4 lt~obsolete.m4
+
+# These exist entirely to fool aclocal when bootstrapping libtool.
+#
+# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN)
+# which have later been changed to m4_define as they aren't part of the
+# exported API, or moved to Autoconf or Automake where they belong.
+#
+# The trouble is, aclocal is a bit thick. It'll see the old AC_DEFUN
+# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us
+# using a macro with the same name in our local m4/libtool.m4 it'll
+# pull the old libtool.m4 in (it doesn't see our shiny new m4_define
+# and doesn't know about Autoconf macros at all.)
+#
+# So we provide this file, which has a silly filename so it's always
+# included after everything else. This provides aclocal with the
+# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything
+# because those macros already exist, or will be overwritten later.
+# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6.
+#
+# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here.
+# Yes, that means every name once taken will need to remain here until
+# we give up compatibility with versions before 1.7, at which point
+# we need to keep only those names which we still refer to.
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])])
+
+m4_ifndef([AC_LIBTOOL_LINKER_OPTION], [AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])])
+m4_ifndef([AC_PROG_EGREP], [AC_DEFUN([AC_PROG_EGREP])])
+m4_ifndef([_LT_AC_PROG_ECHO_BACKSLASH], [AC_DEFUN([_LT_AC_PROG_ECHO_BACKSLASH])])
+m4_ifndef([_LT_AC_SHELL_INIT], [AC_DEFUN([_LT_AC_SHELL_INIT])])
+m4_ifndef([_LT_AC_SYS_LIBPATH_AIX], [AC_DEFUN([_LT_AC_SYS_LIBPATH_AIX])])
+m4_ifndef([_LT_PROG_LTMAIN], [AC_DEFUN([_LT_PROG_LTMAIN])])
+m4_ifndef([_LT_AC_TAGVAR], [AC_DEFUN([_LT_AC_TAGVAR])])
+m4_ifndef([AC_LTDL_ENABLE_INSTALL], [AC_DEFUN([AC_LTDL_ENABLE_INSTALL])])
+m4_ifndef([AC_LTDL_PREOPEN], [AC_DEFUN([AC_LTDL_PREOPEN])])
+m4_ifndef([_LT_AC_SYS_COMPILER], [AC_DEFUN([_LT_AC_SYS_COMPILER])])
+m4_ifndef([_LT_AC_LOCK], [AC_DEFUN([_LT_AC_LOCK])])
+m4_ifndef([AC_LIBTOOL_SYS_OLD_ARCHIVE], [AC_DEFUN([AC_LIBTOOL_SYS_OLD_ARCHIVE])])
+m4_ifndef([_LT_AC_TRY_DLOPEN_SELF], [AC_DEFUN([_LT_AC_TRY_DLOPEN_SELF])])
+m4_ifndef([AC_LIBTOOL_PROG_CC_C_O], [AC_DEFUN([AC_LIBTOOL_PROG_CC_C_O])])
+m4_ifndef([AC_LIBTOOL_SYS_HARD_LINK_LOCKS], [AC_DEFUN([AC_LIBTOOL_SYS_HARD_LINK_LOCKS])])
+m4_ifndef([AC_LIBTOOL_OBJDIR], [AC_DEFUN([AC_LIBTOOL_OBJDIR])])
+m4_ifndef([AC_LTDL_OBJDIR], [AC_DEFUN([AC_LTDL_OBJDIR])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH], [AC_DEFUN([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH])])
+m4_ifndef([AC_LIBTOOL_SYS_LIB_STRIP], [AC_DEFUN([AC_LIBTOOL_SYS_LIB_STRIP])])
+m4_ifndef([AC_PATH_MAGIC], [AC_DEFUN([AC_PATH_MAGIC])])
+m4_ifndef([AC_PROG_LD_GNU], [AC_DEFUN([AC_PROG_LD_GNU])])
+m4_ifndef([AC_PROG_LD_RELOAD_FLAG], [AC_DEFUN([AC_PROG_LD_RELOAD_FLAG])])
+m4_ifndef([AC_DEPLIBS_CHECK_METHOD], [AC_DEFUN([AC_DEPLIBS_CHECK_METHOD])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_NO_RTTI], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_NO_RTTI])])
+m4_ifndef([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE], [AC_DEFUN([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_PIC], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_PIC])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_SHLIBS], [AC_DEFUN([AC_LIBTOOL_PROG_LD_SHLIBS])])
+m4_ifndef([AC_LIBTOOL_POSTDEP_PREDEP], [AC_DEFUN([AC_LIBTOOL_POSTDEP_PREDEP])])
+m4_ifndef([LT_AC_PROG_EGREP], [AC_DEFUN([LT_AC_PROG_EGREP])])
+m4_ifndef([LT_AC_PROG_SED], [AC_DEFUN([LT_AC_PROG_SED])])
+m4_ifndef([_LT_CC_BASENAME], [AC_DEFUN([_LT_CC_BASENAME])])
+m4_ifndef([_LT_COMPILER_BOILERPLATE], [AC_DEFUN([_LT_COMPILER_BOILERPLATE])])
+m4_ifndef([_LT_LINKER_BOILERPLATE], [AC_DEFUN([_LT_LINKER_BOILERPLATE])])
+m4_ifndef([_AC_PROG_LIBTOOL], [AC_DEFUN([_AC_PROG_LIBTOOL])])
+m4_ifndef([AC_LIBTOOL_SETUP], [AC_DEFUN([AC_LIBTOOL_SETUP])])
+m4_ifndef([_LT_AC_CHECK_DLFCN], [AC_DEFUN([_LT_AC_CHECK_DLFCN])])
+m4_ifndef([AC_LIBTOOL_SYS_DYNAMIC_LINKER], [AC_DEFUN([AC_LIBTOOL_SYS_DYNAMIC_LINKER])])
+m4_ifndef([_LT_AC_TAGCONFIG], [AC_DEFUN([_LT_AC_TAGCONFIG])])
+m4_ifndef([AC_DISABLE_FAST_INSTALL], [AC_DEFUN([AC_DISABLE_FAST_INSTALL])])
+m4_ifndef([_LT_AC_LANG_CXX], [AC_DEFUN([_LT_AC_LANG_CXX])])
+m4_ifndef([_LT_AC_LANG_F77], [AC_DEFUN([_LT_AC_LANG_F77])])
+m4_ifndef([_LT_AC_LANG_GCJ], [AC_DEFUN([_LT_AC_LANG_GCJ])])
+m4_ifndef([AC_LIBTOOL_RC], [AC_DEFUN([AC_LIBTOOL_RC])])
+m4_ifndef([AC_LIBTOOL_LANG_C_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_C_CONFIG])])
+m4_ifndef([_LT_AC_LANG_C_CONFIG], [AC_DEFUN([_LT_AC_LANG_C_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_CXX_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_CXX_CONFIG])])
+m4_ifndef([_LT_AC_LANG_CXX_CONFIG], [AC_DEFUN([_LT_AC_LANG_CXX_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_F77_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_F77_CONFIG])])
+m4_ifndef([_LT_AC_LANG_F77_CONFIG], [AC_DEFUN([_LT_AC_LANG_F77_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_GCJ_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_GCJ_CONFIG])])
+m4_ifndef([_LT_AC_LANG_GCJ_CONFIG], [AC_DEFUN([_LT_AC_LANG_GCJ_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_RC_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_RC_CONFIG])])
+m4_ifndef([_LT_AC_LANG_RC_CONFIG], [AC_DEFUN([_LT_AC_LANG_RC_CONFIG])])
+m4_ifndef([AC_LIBTOOL_CONFIG], [AC_DEFUN([AC_LIBTOOL_CONFIG])])
+m4_ifndef([_LT_AC_FILE_LTDLL_C], [AC_DEFUN([_LT_AC_FILE_LTDLL_C])])
+
+# Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_AUTOMAKE_VERSION(VERSION)
+# ----------------------------
+# Automake X.Y traces this macro to ensure aclocal.m4 has been
+# generated from the m4 files accompanying Automake X.Y.
+# (This private macro should not be called outside this file.)
+AC_DEFUN([AM_AUTOMAKE_VERSION],
+[am__api_version='1.11'
+dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
+dnl require some minimum version. Point them to the right macro.
+m4_if([$1], [1.11.1], [],
+ [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
+])
+
+# _AM_AUTOCONF_VERSION(VERSION)
+# -----------------------------
+# aclocal traces this macro to find the Autoconf version.
+# This is a private macro too. Using m4_define simplifies
+# the logic in aclocal, which can simply ignore this definition.
+m4_define([_AM_AUTOCONF_VERSION], [])
+
+# AM_SET_CURRENT_AUTOMAKE_VERSION
+# -------------------------------
+# Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
+# This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
+AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
+[AM_AUTOMAKE_VERSION([1.11.1])dnl
+m4_ifndef([AC_AUTOCONF_VERSION],
+ [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
+_AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
+
+# AM_AUX_DIR_EXPAND -*- Autoconf -*-
+
+# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
+# $ac_aux_dir to `$srcdir/foo'. In other projects, it is set to
+# `$srcdir', `$srcdir/..', or `$srcdir/../..'.
+#
+# Of course, Automake must honor this variable whenever it calls a
+# tool from the auxiliary directory. The problem is that $srcdir (and
+# therefore $ac_aux_dir as well) can be either absolute or relative,
+# depending on how configure is run. This is pretty annoying, since
+# it makes $ac_aux_dir quite unusable in subdirectories: in the top
+# source directory, any form will work fine, but in subdirectories a
+# relative path needs to be adjusted first.
+#
+# $ac_aux_dir/missing
+# fails when called from a subdirectory if $ac_aux_dir is relative
+# $top_srcdir/$ac_aux_dir/missing
+# fails if $ac_aux_dir is absolute,
+# fails when called from a subdirectory in a VPATH build with
+# a relative $ac_aux_dir
+#
+# The reason of the latter failure is that $top_srcdir and $ac_aux_dir
+# are both prefixed by $srcdir. In an in-source build this is usually
+# harmless because $srcdir is `.', but things will broke when you
+# start a VPATH build or use an absolute $srcdir.
+#
+# So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
+# iff we strip the leading $srcdir from $ac_aux_dir. That would be:
+# am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
+# and then we would define $MISSING as
+# MISSING="\${SHELL} $am_aux_dir/missing"
+# This will work as long as MISSING is not called from configure, because
+# unfortunately $(top_srcdir) has no meaning in configure.
+# However there are other variables, like CC, which are often used in
+# configure, and could therefore not use this "fixed" $ac_aux_dir.
+#
+# Another solution, used here, is to always expand $ac_aux_dir to an
+# absolute PATH. The drawback is that using absolute paths prevent a
+# configured tree to be moved without reconfiguration.
+
+AC_DEFUN([AM_AUX_DIR_EXPAND],
+[dnl Rely on autoconf to set up CDPATH properly.
+AC_PREREQ([2.50])dnl
+# expand $ac_aux_dir to an absolute path
+am_aux_dir=`cd $ac_aux_dir && pwd`
+])
+
+# AM_CONDITIONAL -*- Autoconf -*-
+
+# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 9
+
+# AM_CONDITIONAL(NAME, SHELL-CONDITION)
+# -------------------------------------
+# Define a conditional.
+AC_DEFUN([AM_CONDITIONAL],
+[AC_PREREQ(2.52)dnl
+ ifelse([$1], [TRUE], [AC_FATAL([$0: invalid condition: $1])],
+ [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
+AC_SUBST([$1_TRUE])dnl
+AC_SUBST([$1_FALSE])dnl
+_AM_SUBST_NOTMAKE([$1_TRUE])dnl
+_AM_SUBST_NOTMAKE([$1_FALSE])dnl
+m4_define([_AM_COND_VALUE_$1], [$2])dnl
+if $2; then
+ $1_TRUE=
+ $1_FALSE='#'
+else
+ $1_TRUE='#'
+ $1_FALSE=
+fi
+AC_CONFIG_COMMANDS_PRE(
+[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
+ AC_MSG_ERROR([[conditional "$1" was never defined.
+Usually this means the macro was only invoked conditionally.]])
+fi])])
+
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 10
+
+# There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
+# written in clear, in which case automake, when reading aclocal.m4,
+# will think it sees a *use*, and therefore will trigger all it's
+# C support machinery. Also note that it means that autoscan, seeing
+# CC etc. in the Makefile, will ask for an AC_PROG_CC use...
+
+
+# _AM_DEPENDENCIES(NAME)
+# ----------------------
+# See how the compiler implements dependency checking.
+# NAME is "CC", "CXX", "GCJ", or "OBJC".
+# We try a few techniques and use that to set a single cache variable.
+#
+# We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
+# modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
+# dependency, and given that the user is not expected to run this macro,
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+AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
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+AC_REQUIRE([AM_DEP_TRACK])dnl
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+AC_CACHE_CHECK([dependency style of $depcc],
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+ # Copy depcomp to subdir because otherwise we won't find it if we're
+ # using a relative directory.
+ cp "$am_depcomp" conftest.dir
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+ # side effect of compilation, but ICC will put the dependencies in
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+ if test "$am_compiler_list" = ""; then
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+ am__universal=false
+ m4_case([$1], [CC],
+ [case " $depcc " in #(
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+ [CXX],
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+ *\ -arch\ *\ -arch\ *) am__universal=true ;;
+ esac])
+
+ for depmode in $am_compiler_list; do
+ # Setup a source with many dependencies, because some compilers
+ # like to wrap large dependency lists on column 80 (with \), and
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+ # We need to recreate these files for each test, as the compiler may
+ # overwrite some of them when testing with obscure command lines.
+ # This happens at least with the AIX C compiler.
+ : > sub/conftest.c
+ for i in 1 2 3 4 5 6; do
+ echo '#include "conftst'$i'.h"' >> sub/conftest.c
+ # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+ # Solaris 8's {/usr,}/bin/sh.
+ touch sub/conftst$i.h
+ done
+ echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
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+ # We check with `-c' and `-o' for the sake of the "dashmstdout"
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+ continue
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+ break
+ fi
+ ;;
+ msvisualcpp | msvcmsys)
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+ am__minus_obj=
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+ grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
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+ # When given -MP, icc 7.0 and 7.1 complain thusly:
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+# Generate code to set up dependency tracking. -*- Autoconf -*-
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+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+#serial 5
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+
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+
+# Do all the work for Automake. -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 16
+
+# This macro actually does too much. Some checks are only needed if
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+# We support both call styles for the transition. After
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+# Copyright (C) 2001, 2003, 2005, 2008 Free Software Foundation, Inc.
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+# AM_PROG_INSTALL_SH
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+AC_SUBST(install_sh)])
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+# Copyright (C) 2003, 2005 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
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+# Add --enable-maintainer-mode option to configure. -*- Autoconf -*-
+# From Jim Meyering
+
+# Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
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+# serial 5
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+#
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+# AM_MAKE_INCLUDE()
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+# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
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+# serial 6
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+# Helper functions for option handling. -*- Autoconf -*-
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+# Copyright (C) 2001, 2002, 2003, 2005, 2008 Free Software Foundation, Inc.
+#
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+# gives unlimited permission to copy and/or distribute it,
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+# serial 4
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+# Free Software Foundation, Inc.
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+# Copyright (C) 2006, 2008 Free Software Foundation, Inc.
+#
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+# serial 2
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+# _AM_SUBST_NOTMAKE(VARIABLE)
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+# Check how to create a tarball. -*- Autoconf -*-
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+#
+# Substitute a variable $(am__untar) that extract such
+# a tarball read from stdin.
+# $(am__untar) < result.tar
+AC_DEFUN([_AM_PROG_TAR],
+[# Always define AMTAR for backward compatibility.
+AM_MISSING_PROG([AMTAR], [tar])
+m4_if([$1], [v7],
+ [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'],
+ [m4_case([$1], [ustar],, [pax],,
+ [m4_fatal([Unknown tar format])])
+AC_MSG_CHECKING([how to create a $1 tar archive])
+# Loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
+_am_tools=${am_cv_prog_tar_$1-$_am_tools}
+# Do not fold the above two line into one, because Tru64 sh and
+# Solaris sh will not grok spaces in the rhs of `-'.
+for _am_tool in $_am_tools
+do
+ case $_am_tool in
+ gnutar)
+ for _am_tar in tar gnutar gtar;
+ do
+ AM_RUN_LOG([$_am_tar --version]) && break
+ done
+ am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
+ am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
+ am__untar="$_am_tar -xf -"
+ ;;
+ plaintar)
+ # Must skip GNU tar: if it does not support --format= it doesn't create
+ # ustar tarball either.
+ (tar --version) >/dev/null 2>&1 && continue
+ am__tar='tar chf - "$$tardir"'
+ am__tar_='tar chf - "$tardir"'
+ am__untar='tar xf -'
+ ;;
+ pax)
+ am__tar='pax -L -x $1 -w "$$tardir"'
+ am__tar_='pax -L -x $1 -w "$tardir"'
+ am__untar='pax -r'
+ ;;
+ cpio)
+ am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
+ am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
+ am__untar='cpio -i -H $1 -d'
+ ;;
+ none)
+ am__tar=false
+ am__tar_=false
+ am__untar=false
+ ;;
+ esac
+
+ # If the value was cached, stop now. We just wanted to have am__tar
+ # and am__untar set.
+ test -n "${am_cv_prog_tar_$1}" && break
+
+ # tar/untar a dummy directory, and stop if the command works
+ rm -rf conftest.dir
+ mkdir conftest.dir
+ echo GrepMe > conftest.dir/file
+ AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
+ rm -rf conftest.dir
+ if test -s conftest.tar; then
+ AM_RUN_LOG([$am__untar <conftest.tar])
+ grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
+ fi
+done
+rm -rf conftest.dir
+
+AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
+AC_MSG_RESULT([$am_cv_prog_tar_$1])])
+AC_SUBST([am__tar])
+AC_SUBST([am__untar])
+]) # _AM_PROG_TAR
+
--- /dev/null
+libtoolize
+aclocal
+automake --add-missing
+autoconf
+autoheader
--- /dev/null
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* fdatasync(2) is available */
+#undef HAVE_FDATASYNC
+
+/* futimes(2) is available */
+#undef HAVE_FUTIMES
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* posix_fadvise(2) is available */
+#undef HAVE_POSIX_FADVISE
+
+/* posix_madvise(2) is available */
+#undef HAVE_POSIX_MADVISE
+
+/* pread(2) and pwrite(2) are available */
+#undef HAVE_PREADWRITE
+
+/* readahead(2) is available (linux) */
+#undef HAVE_READAHEAD
+
+/* sendfile(2) is available and supported */
+#undef HAVE_SENDFILE
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* sync_file_range(2) is available */
+#undef HAVE_SYNC_FILE_RANGE
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* utimes(2) is available */
+#undef HAVE_UTIMES
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#undef LT_OBJDIR
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
--- /dev/null
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* fdatasync(2) is available */
+#define HAVE_FDATASYNC 1
+
+/* futimes(2) is available */
+#define HAVE_FUTIMES 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* pread(2) and pwrite(2) are available */
+#define HAVE_PREADWRITE 1
+
+/* readahead(2) is available (linux) */
+/* #undef HAVE_READAHEAD */
+
+/* sendfile(2) is available and supported */
+/* #undef HAVE_SENDFILE */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* sync_file_range(2) is available */
+/* #undef HAVE_SYNC_FILE_RANGE */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Name of package */
+#define PACKAGE "libeio"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "1.0"
--- /dev/null
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* fdatasync(2) is not available on 10.5 but is on 10.6
+ * How should we deal with this? */
+/* #define HAVE_FDATASYNC 0 */
+
+/* futimes(2) is available */
+#define HAVE_FUTIMES 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* pread(2) and pwrite(2) are available */
+#define HAVE_PREADWRITE 1
+
+/* readahead(2) is available (linux) */
+/* #undef HAVE_READAHEAD */
+
+/* sendfile(2) is available and supported */
+#define HAVE_SENDFILE 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* sync_file_range(2) is available */
+/* #undef HAVE_SYNC_FILE_RANGE */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Name of package */
+#define PACKAGE "libeio"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "1.0"
--- /dev/null
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* fdatasync(2) is available */
+/* #undef HAVE_FDATASYNC */
+
+/* futimes(2) is available */
+#define HAVE_FUTIMES 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* pread(2) and pwrite(2) are available */
+#define HAVE_PREADWRITE 1
+
+/* readahead(2) is available (linux) */
+/* #undef HAVE_READAHEAD */
+
+/* sendfile(2) is available and supported */
+#define HAVE_SENDFILE 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* sync_file_range(2) is available */
+/* #undef HAVE_SYNC_FILE_RANGE */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Name of package */
+#define PACKAGE "libeio"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "1.0"
--- /dev/null
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+#include <linux/version.h>
+
+#define LINUX_VERSION_CODE_FOR(major, minor, patch) (((major & 255) >> 16) | ((minor & 255) >> 8) | (patch & 255))
+#define LINUX_VERSION_AT_LEAST(major, minor, patch) (LINUX_VERSION_CODE_FOR(major, minor, patch) >= LINUX_VERSION_CODE)
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* fdatasync(2) is available */
+#define HAVE_FDATASYNC 1
+
+/* futimes(2) is available */
+#define HAVE_FUTIMES 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* pread(2) and pwrite(2) are available */
+#define HAVE_PREADWRITE 1
+
+/* readahead(2) is available (linux) */
+#define HAVE_READAHEAD 1
+
+/* sendfile(2) is available and supported */
+#define HAVE_SENDFILE 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* sync_file_range(2) is available */
+#define HAVE_SYNC_FILE_RANGE LINUX_VERSION_AT_LEAST(2, 6, 17)
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Name of package */
+#define PACKAGE "libeio"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "1.0"
--- /dev/null
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* fdatasync(2) is available */
+#define HAVE_FDATASYNC 1
+
+/* futimes(2) is available */
+/* #undef HAVE_FUTIMES */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* pread(2) and pwrite(2) are available */
+#define HAVE_PREADWRITE 1
+
+/* readahead(2) is available (linux) */
+/* #undef HAVE_READAHEAD */
+
+/* sendfile(2) is available and supported */
+/* #undef HAVE_SENDFILE */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* sync_file_range(2) is available */
+/* #undef HAVE_SYNC_FILE_RANGE */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Name of package */
+#define PACKAGE "libeio"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "1.0"
--- /dev/null
+AC_PREREQ(2.59)
+AC_INIT
+AC_CONFIG_SRCDIR([eio.h])
+AC_CONFIG_HEADERS([config.h])
+
+AM_INIT_AUTOMAKE(libeio,1.0)
+AM_MAINTAINER_MODE
+AC_PROG_LIBTOOL
+
+AC_PROG_CC
+
+if test "x$GCC" = xyes ; then
+ CFLAGS="$CFLAGS -O3"
+fi
+
+dnl somebody will forgive me
+CFLAGS="-D_GNU_SOURCE $CFLAGS"
+
+m4_include([libeio.m4])
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
--- /dev/null
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <poll.h>
+#include <string.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "eio.h"
+
+int respipe [2];
+
+void
+want_poll (void)
+{
+ char dummy;
+ printf ("want_poll ()\n");
+ write (respipe [1], &dummy, 1);
+}
+
+void
+done_poll (void)
+{
+ char dummy;
+ printf ("done_poll ()\n");
+ read (respipe [0], &dummy, 1);
+}
+
+void
+event_loop (void)
+{
+ // an event loop. yeah.
+ struct pollfd pfd;
+ pfd.fd = respipe [0];
+ pfd.events = POLLIN;
+
+ printf ("\nentering event loop\n");
+ while (eio_nreqs ())
+ {
+ poll (&pfd, 1, -1);
+ printf ("eio_poll () = %d\n", eio_poll ());
+ }
+ printf ("leaving event loop\n");
+}
+
+int
+res_cb (eio_req *req)
+{
+ printf ("res_cb(%d|%s) = %d\n", req->type, req->data ? req->data : "?", EIO_RESULT (req));
+
+ if (req->result < 0)
+ abort ();
+
+ return 0;
+}
+
+int
+readdir_cb (eio_req *req)
+{
+ char *buf = (char *)EIO_BUF (req);
+
+ printf ("readdir_cb = %d\n", EIO_RESULT (req));
+
+ if (EIO_RESULT (req) < 0)
+ return 0;
+
+ while (EIO_RESULT (req)--)
+ {
+ printf ("readdir = <%s>\n", buf);
+ buf += strlen (buf) + 1;
+ }
+
+ return 0;
+}
+
+int
+stat_cb (eio_req *req)
+{
+ struct stat *buf = EIO_STAT_BUF (req);
+
+ if (req->type == EIO_FSTAT)
+ printf ("fstat_cb = %d\n", EIO_RESULT (req));
+ else
+ printf ("stat_cb(%s) = %d\n", EIO_PATH (req), EIO_RESULT (req));
+
+ if (!EIO_RESULT (req))
+ printf ("stat size %d perm 0%o\n", buf->st_size, buf->st_mode & 0777);
+
+ return 0;
+}
+
+int
+read_cb (eio_req *req)
+{
+ unsigned char *buf = (unsigned char *)EIO_BUF (req);
+
+ printf ("read_cb = %d (%02x%02x%02x%02x %02x%02x%02x%02x)\n",
+ EIO_RESULT (req),
+ buf [0], buf [1], buf [2], buf [3],
+ buf [4], buf [5], buf [6], buf [7]);
+
+ return 0;
+}
+
+int last_fd;
+
+int
+open_cb (eio_req *req)
+{
+ printf ("open_cb = %d\n", EIO_RESULT (req));
+
+ last_fd = EIO_RESULT (req);
+
+ return 0;
+}
+
+int
+main (void)
+{
+ printf ("pipe ()\n");
+ if (pipe (respipe)) abort ();
+
+ printf ("eio_init ()\n");
+ if (eio_init (want_poll, done_poll)) abort ();
+
+ do
+ {
+ /* avoid relative paths yourself(!) */
+ eio_mkdir ("eio-test-dir", 0777, 0, res_cb, "mkdir");
+ eio_nop (0, res_cb, "nop");
+ event_loop ();
+
+ eio_stat ("eio-test-dir", 0, stat_cb, "stat");
+ eio_lstat ("eio-test-dir", 0, stat_cb, "stat");
+ eio_open ("eio-test-dir/eio-test-file", O_RDWR | O_CREAT, 0777, 0, open_cb, "open");
+ eio_symlink ("test", "eio-test-dir/eio-symlink", 0, res_cb, "symlink");
+ eio_mknod ("eio-test-dir/eio-fifo", S_IFIFO, 0, 0, res_cb, "mknod");
+ event_loop ();
+
+ eio_utime ("eio-test-dir", 12345.678, 23456.789, 0, res_cb, "utime");
+ eio_futime (last_fd, 92345.678, 93456.789, 0, res_cb, "futime");
+ eio_chown ("eio-test-dir", getuid (), getgid (), 0, res_cb, "chown");
+ eio_fchown (last_fd, getuid (), getgid (), 0, res_cb, "fchown");
+ eio_fchmod (last_fd, 0723, 0, res_cb, "fchmod");
+ eio_readdir ("eio-test-dir", 0, 0, readdir_cb, "readdir");
+ eio_readdir ("/nonexistant", 0, 0, readdir_cb, "readdir");
+ eio_fstat (last_fd, 0, stat_cb, "stat");
+ eio_write (last_fd, "test\nfail\n", 10, 4, 0, res_cb, "write");
+ event_loop ();
+
+ eio_read (last_fd, 0, 8, 0, EIO_PRI_DEFAULT, read_cb, "read");
+ eio_readlink ("eio-test-dir/eio-symlink", 0, res_cb, "readlink");
+ event_loop ();
+
+ eio_dup2 (1, 2, EIO_PRI_DEFAULT, res_cb, "dup"); // dup stdout to stderr
+ eio_chmod ("eio-test-dir", 0765, 0, res_cb, "chmod");
+ eio_ftruncate (last_fd, 9, 0, res_cb, "ftruncate");
+ eio_fdatasync (last_fd, 0, res_cb, "fdatasync");
+ eio_fsync (last_fd, 0, res_cb, "fsync");
+ eio_sync (0, res_cb, "sync");
+ eio_busy (0.5, 0, res_cb, "busy");
+ event_loop ();
+
+ eio_sendfile (1, last_fd, 4, 5, 0, res_cb, "sendfile"); // write "test\n" to stdout
+ eio_fstat (last_fd, 0, stat_cb, "stat");
+ event_loop ();
+
+ eio_truncate ("eio-test-dir/eio-test-file", 6, 0, res_cb, "truncate");
+ eio_readahead (last_fd, 0, 64, 0, res_cb, "readahead");
+ event_loop ();
+
+ eio_close (last_fd, 0, res_cb, "close");
+ eio_link ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-2", 0, res_cb, "link");
+ event_loop ();
+
+ eio_rename ("eio-test-dir/eio-test-file", "eio-test-dir/eio-test-file-renamed", 0, res_cb, "rename");
+ event_loop ();
+
+ eio_unlink ("eio-test-dir/eio-fifo", 0, res_cb, "unlink");
+ eio_unlink ("eio-test-dir/eio-symlink", 0, res_cb, "unlink");
+ eio_unlink ("eio-test-dir/eio-test-file-2", 0, res_cb, "unlink");
+ eio_unlink ("eio-test-dir/eio-test-file-renamed", 0, res_cb, "unlink");
+ event_loop ();
+
+ eio_rmdir ("eio-test-dir", 0, res_cb, "rmdir");
+ event_loop ();
+ }
+ while (0);
+
+ return 0;
+}
+
--- /dev/null
+.\" Automatically generated by Pod::Man 2.16 (Pod::Simple 3.05)
+.\"
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+.\" ========================================================================
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+.PP
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+. ds -- \|\(em\|
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+.el .ds Aq '
+.\"
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+..
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+.\}
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+. de IX
+..
+.\}
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+. ds #] \&
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+. ds ' \&
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+. ds ^ \&
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+. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
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+. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
+.\}
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+.ds ae a\h'-(\w'a'u*4/10)'e
+.ds Ae A\h'-(\w'A'u*4/10)'E
+. \" corrections for vroff
+.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
+.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
+. \" for low resolution devices (crt and lpr)
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+\{\
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+. ds ae ae
+. ds Ae AE
+.\}
+.rm #[ #] #H #V #F C
+.\" ========================================================================
+.\"
+.IX Title "LIBEIO 3"
+.TH LIBEIO 3 "2008-05-11" "libeio-1.0" "libeio - truly asynchronous POSIX I/O"
+.\" For nroff, turn off justification. Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH "NAME"
+libev \- a high performance full\-featured event loop written in C
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+.Vb 1
+\& #include <ev.h>
+.Ve
+.Sh "\s-1EXAMPLE\s0 \s-1PROGRAM\s0"
+.IX Subsection "EXAMPLE PROGRAM"
+.Vb 2
+\& // a single header file is required
+\& #include <ev.h>
+\&
+\& // every watcher type has its own typedef\*(Aqd struct
+\& // with the name ev_<type>
+\& ev_io stdin_watcher;
+\& ev_timer timeout_watcher;
+\&
+\& // all watcher callbacks have a similar signature
+\& // this callback is called when data is readable on stdin
+\& static void
+\& stdin_cb (EV_P_ struct ev_io *w, int revents)
+\& {
+\& puts ("stdin ready");
+\& // for one\-shot events, one must manually stop the watcher
+\& // with its corresponding stop function.
+\& ev_io_stop (EV_A_ w);
+\&
+\& // this causes all nested ev_loop\*(Aqs to stop iterating
+\& ev_unloop (EV_A_ EVUNLOOP_ALL);
+\& }
+\&
+\& // another callback, this time for a time\-out
+\& static void
+\& timeout_cb (EV_P_ struct ev_timer *w, int revents)
+\& {
+\& puts ("timeout");
+\& // this causes the innermost ev_loop to stop iterating
+\& ev_unloop (EV_A_ EVUNLOOP_ONE);
+\& }
+\&
+\& int
+\& main (void)
+\& {
+\& // use the default event loop unless you have special needs
+\& struct ev_loop *loop = ev_default_loop (0);
+\&
+\& // initialise an io watcher, then start it
+\& // this one will watch for stdin to become readable
+\& ev_io_init (&stdin_watcher, stdin_cb, /*STDIN_FILENO*/ 0, EV_READ);
+\& ev_io_start (loop, &stdin_watcher);
+\&
+\& // initialise a timer watcher, then start it
+\& // simple non\-repeating 5.5 second timeout
+\& ev_timer_init (&timeout_watcher, timeout_cb, 5.5, 0.);
+\& ev_timer_start (loop, &timeout_watcher);
+\&
+\& // now wait for events to arrive
+\& ev_loop (loop, 0);
+\&
+\& // unloop was called, so exit
+\& return 0;
+\& }
+.Ve
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+The newest version of this document is also available as an html-formatted
+web page you might find easier to navigate when reading it for the first
+time: <http://cvs.schmorp.de/libev/ev.html>.
+.PP
+Libev is an event loop: you register interest in certain events (such as a
+file descriptor being readable or a timeout occurring), and it will manage
+these event sources and provide your program with events.
+.PP
+To do this, it must take more or less complete control over your process
+(or thread) by executing the \fIevent loop\fR handler, and will then
+communicate events via a callback mechanism.
+.PP
+You register interest in certain events by registering so-called \fIevent
+watchers\fR, which are relatively small C structures you initialise with the
+details of the event, and then hand it over to libev by \fIstarting\fR the
+watcher.
+.Sh "\s-1FEATURES\s0"
+.IX Subsection "FEATURES"
+Libev supports \f(CW\*(C`select\*(C'\fR, \f(CW\*(C`poll\*(C'\fR, the Linux-specific \f(CW\*(C`epoll\*(C'\fR, the
+BSD-specific \f(CW\*(C`kqueue\*(C'\fR and the Solaris-specific event port mechanisms
+for file descriptor events (\f(CW\*(C`ev_io\*(C'\fR), the Linux \f(CW\*(C`inotify\*(C'\fR interface
+(for \f(CW\*(C`ev_stat\*(C'\fR), relative timers (\f(CW\*(C`ev_timer\*(C'\fR), absolute timers
+with customised rescheduling (\f(CW\*(C`ev_periodic\*(C'\fR), synchronous signals
+(\f(CW\*(C`ev_signal\*(C'\fR), process status change events (\f(CW\*(C`ev_child\*(C'\fR), and event
+watchers dealing with the event loop mechanism itself (\f(CW\*(C`ev_idle\*(C'\fR,
+\&\f(CW\*(C`ev_embed\*(C'\fR, \f(CW\*(C`ev_prepare\*(C'\fR and \f(CW\*(C`ev_check\*(C'\fR watchers) as well as
+file watchers (\f(CW\*(C`ev_stat\*(C'\fR) and even limited support for fork events
+(\f(CW\*(C`ev_fork\*(C'\fR).
+.PP
+It also is quite fast (see this
+benchmark comparing it to libevent
+for example).
+.Sh "\s-1CONVENTIONS\s0"
+.IX Subsection "CONVENTIONS"
+Libev is very configurable. In this manual the default (and most common)
+configuration will be described, which supports multiple event loops. For
+more info about various configuration options please have a look at
+\&\fB\s-1EMBED\s0\fR section in this manual. If libev was configured without support
+for multiple event loops, then all functions taking an initial argument of
+name \f(CW\*(C`loop\*(C'\fR (which is always of type \f(CW\*(C`struct ev_loop *\*(C'\fR) will not have
+this argument.
+.Sh "\s-1TIME\s0 \s-1REPRESENTATION\s0"
+.IX Subsection "TIME REPRESENTATION"
+Libev represents time as a single floating point number, representing the
+(fractional) number of seconds since the (\s-1POSIX\s0) epoch (somewhere near
+the beginning of 1970, details are complicated, don't ask). This type is
+called \f(CW\*(C`ev_tstamp\*(C'\fR, which is what you should use too. It usually aliases
+to the \f(CW\*(C`double\*(C'\fR type in C, and when you need to do any calculations on
+it, you should treat it as some floatingpoint value. Unlike the name
+component \f(CW\*(C`stamp\*(C'\fR might indicate, it is also used for time differences
+throughout libev.
+.SH "GLOBAL FUNCTIONS"
+.IX Header "GLOBAL FUNCTIONS"
+These functions can be called anytime, even before initialising the
+library in any way.
+.IP "ev_tstamp ev_time ()" 4
+.IX Item "ev_tstamp ev_time ()"
+Returns the current time as libev would use it. Please note that the
+\&\f(CW\*(C`ev_now\*(C'\fR function is usually faster and also often returns the timestamp
+you actually want to know.
+.IP "ev_sleep (ev_tstamp interval)" 4
+.IX Item "ev_sleep (ev_tstamp interval)"
+Sleep for the given interval: The current thread will be blocked until
+either it is interrupted or the given time interval has passed. Basically
+this is a subsecond-resolution \f(CW\*(C`sleep ()\*(C'\fR.
+.IP "int ev_version_major ()" 4
+.IX Item "int ev_version_major ()"
+.PD 0
+.IP "int ev_version_minor ()" 4
+.IX Item "int ev_version_minor ()"
+.PD
+You can find out the major and minor \s-1ABI\s0 version numbers of the library
+you linked against by calling the functions \f(CW\*(C`ev_version_major\*(C'\fR and
+\&\f(CW\*(C`ev_version_minor\*(C'\fR. If you want, you can compare against the global
+symbols \f(CW\*(C`EV_VERSION_MAJOR\*(C'\fR and \f(CW\*(C`EV_VERSION_MINOR\*(C'\fR, which specify the
+version of the library your program was compiled against.
+.Sp
+These version numbers refer to the \s-1ABI\s0 version of the library, not the
+release version.
+.Sp
+Usually, it's a good idea to terminate if the major versions mismatch,
+as this indicates an incompatible change. Minor versions are usually
+compatible to older versions, so a larger minor version alone is usually
+not a problem.
+.Sp
+Example: Make sure we haven't accidentally been linked against the wrong
+version.
+.Sp
+.Vb 3
+\& assert (("libev version mismatch",
+\& ev_version_major () == EV_VERSION_MAJOR
+\& && ev_version_minor () >= EV_VERSION_MINOR));
+.Ve
+.IP "unsigned int ev_supported_backends ()" 4
+.IX Item "unsigned int ev_supported_backends ()"
+Return the set of all backends (i.e. their corresponding \f(CW\*(C`EV_BACKEND_*\*(C'\fR
+value) compiled into this binary of libev (independent of their
+availability on the system you are running on). See \f(CW\*(C`ev_default_loop\*(C'\fR for
+a description of the set values.
+.Sp
+Example: make sure we have the epoll method, because yeah this is cool and
+a must have and can we have a torrent of it please!!!11
+.Sp
+.Vb 2
+\& assert (("sorry, no epoll, no sex",
+\& ev_supported_backends () & EVBACKEND_EPOLL));
+.Ve
+.IP "unsigned int ev_recommended_backends ()" 4
+.IX Item "unsigned int ev_recommended_backends ()"
+Return the set of all backends compiled into this binary of libev and also
+recommended for this platform. This set is often smaller than the one
+returned by \f(CW\*(C`ev_supported_backends\*(C'\fR, as for example kqueue is broken on
+most BSDs and will not be autodetected unless you explicitly request it
+(assuming you know what you are doing). This is the set of backends that
+libev will probe for if you specify no backends explicitly.
+.IP "unsigned int ev_embeddable_backends ()" 4
+.IX Item "unsigned int ev_embeddable_backends ()"
+Returns the set of backends that are embeddable in other event loops. This
+is the theoretical, all-platform, value. To find which backends
+might be supported on the current system, you would need to look at
+\&\f(CW\*(C`ev_embeddable_backends () & ev_supported_backends ()\*(C'\fR, likewise for
+recommended ones.
+.Sp
+See the description of \f(CW\*(C`ev_embed\*(C'\fR watchers for more info.
+.IP "ev_set_allocator (void *(*cb)(void *ptr, long size))" 4
+.IX Item "ev_set_allocator (void *(*cb)(void *ptr, long size))"
+Sets the allocation function to use (the prototype is similar \- the
+semantics are identical to the \f(CW\*(C`realloc\*(C'\fR C89/SuS/POSIX function). It is
+used to allocate and free memory (no surprises here). If it returns zero
+when memory needs to be allocated (\f(CW\*(C`size != 0\*(C'\fR), the library might abort
+or take some potentially destructive action.
+.Sp
+Since some systems (at least OpenBSD and Darwin) fail to implement
+correct \f(CW\*(C`realloc\*(C'\fR semantics, libev will use a wrapper around the system
+\&\f(CW\*(C`realloc\*(C'\fR and \f(CW\*(C`free\*(C'\fR functions by default.
+.Sp
+You could override this function in high-availability programs to, say,
+free some memory if it cannot allocate memory, to use a special allocator,
+or even to sleep a while and retry until some memory is available.
+.Sp
+Example: Replace the libev allocator with one that waits a bit and then
+retries (example requires a standards-compliant \f(CW\*(C`realloc\*(C'\fR).
+.Sp
+.Vb 6
+\& static void *
+\& persistent_realloc (void *ptr, size_t size)
+\& {
+\& for (;;)
+\& {
+\& void *newptr = realloc (ptr, size);
+\&
+\& if (newptr)
+\& return newptr;
+\&
+\& sleep (60);
+\& }
+\& }
+\&
+\& ...
+\& ev_set_allocator (persistent_realloc);
+.Ve
+.IP "ev_set_syserr_cb (void (*cb)(const char *msg));" 4
+.IX Item "ev_set_syserr_cb (void (*cb)(const char *msg));"
+Set the callback function to call on a retryable syscall error (such
+as failed select, poll, epoll_wait). The message is a printable string
+indicating the system call or subsystem causing the problem. If this
+callback is set, then libev will expect it to remedy the sitution, no
+matter what, when it returns. That is, libev will generally retry the
+requested operation, or, if the condition doesn't go away, do bad stuff
+(such as abort).
+.Sp
+Example: This is basically the same thing that libev does internally, too.
+.Sp
+.Vb 6
+\& static void
+\& fatal_error (const char *msg)
+\& {
+\& perror (msg);
+\& abort ();
+\& }
+\&
+\& ...
+\& ev_set_syserr_cb (fatal_error);
+.Ve
+.SH "FUNCTIONS CONTROLLING THE EVENT LOOP"
+.IX Header "FUNCTIONS CONTROLLING THE EVENT LOOP"
+An event loop is described by a \f(CW\*(C`struct ev_loop *\*(C'\fR. The library knows two
+types of such loops, the \fIdefault\fR loop, which supports signals and child
+events, and dynamically created loops which do not.
+.IP "struct ev_loop *ev_default_loop (unsigned int flags)" 4
+.IX Item "struct ev_loop *ev_default_loop (unsigned int flags)"
+This will initialise the default event loop if it hasn't been initialised
+yet and return it. If the default loop could not be initialised, returns
+false. If it already was initialised it simply returns it (and ignores the
+flags. If that is troubling you, check \f(CW\*(C`ev_backend ()\*(C'\fR afterwards).
+.Sp
+If you don't know what event loop to use, use the one returned from this
+function.
+.Sp
+Note that this function is \fInot\fR thread-safe, so if you want to use it
+from multiple threads, you have to lock (note also that this is unlikely,
+as loops cannot bes hared easily between threads anyway).
+.Sp
+The default loop is the only loop that can handle \f(CW\*(C`ev_signal\*(C'\fR and
+\&\f(CW\*(C`ev_child\*(C'\fR watchers, and to do this, it always registers a handler
+for \f(CW\*(C`SIGCHLD\*(C'\fR. If this is a problem for your app you can either
+create a dynamic loop with \f(CW\*(C`ev_loop_new\*(C'\fR that doesn't do that, or you
+can simply overwrite the \f(CW\*(C`SIGCHLD\*(C'\fR signal handler \fIafter\fR calling
+\&\f(CW\*(C`ev_default_init\*(C'\fR.
+.Sp
+The flags argument can be used to specify special behaviour or specific
+backends to use, and is usually specified as \f(CW0\fR (or \f(CW\*(C`EVFLAG_AUTO\*(C'\fR).
+.Sp
+The following flags are supported:
+.RS 4
+.ie n .IP """EVFLAG_AUTO""" 4
+.el .IP "\f(CWEVFLAG_AUTO\fR" 4
+.IX Item "EVFLAG_AUTO"
+The default flags value. Use this if you have no clue (it's the right
+thing, believe me).
+.ie n .IP """EVFLAG_NOENV""" 4
+.el .IP "\f(CWEVFLAG_NOENV\fR" 4
+.IX Item "EVFLAG_NOENV"
+If this flag bit is ored into the flag value (or the program runs setuid
+or setgid) then libev will \fInot\fR look at the environment variable
+\&\f(CW\*(C`LIBEV_FLAGS\*(C'\fR. Otherwise (the default), this environment variable will
+override the flags completely if it is found in the environment. This is
+useful to try out specific backends to test their performance, or to work
+around bugs.
+.ie n .IP """EVFLAG_FORKCHECK""" 4
+.el .IP "\f(CWEVFLAG_FORKCHECK\fR" 4
+.IX Item "EVFLAG_FORKCHECK"
+Instead of calling \f(CW\*(C`ev_default_fork\*(C'\fR or \f(CW\*(C`ev_loop_fork\*(C'\fR manually after
+a fork, you can also make libev check for a fork in each iteration by
+enabling this flag.
+.Sp
+This works by calling \f(CW\*(C`getpid ()\*(C'\fR on every iteration of the loop,
+and thus this might slow down your event loop if you do a lot of loop
+iterations and little real work, but is usually not noticeable (on my
+GNU/Linux system for example, \f(CW\*(C`getpid\*(C'\fR is actually a simple 5\-insn sequence
+without a syscall and thus \fIvery\fR fast, but my GNU/Linux system also has
+\&\f(CW\*(C`pthread_atfork\*(C'\fR which is even faster).
+.Sp
+The big advantage of this flag is that you can forget about fork (and
+forget about forgetting to tell libev about forking) when you use this
+flag.
+.Sp
+This flag setting cannot be overriden or specified in the \f(CW\*(C`LIBEV_FLAGS\*(C'\fR
+environment variable.
+.ie n .IP """EVBACKEND_SELECT"" (value 1, portable select backend)" 4
+.el .IP "\f(CWEVBACKEND_SELECT\fR (value 1, portable select backend)" 4
+.IX Item "EVBACKEND_SELECT (value 1, portable select backend)"
+This is your standard \fIselect\fR\|(2) backend. Not \fIcompletely\fR standard, as
+libev tries to roll its own fd_set with no limits on the number of fds,
+but if that fails, expect a fairly low limit on the number of fds when
+using this backend. It doesn't scale too well (O(highest_fd)), but its
+usually the fastest backend for a low number of (low-numbered :) fds.
+.Sp
+To get good performance out of this backend you need a high amount of
+parallelity (most of the file descriptors should be busy). If you are
+writing a server, you should \f(CW\*(C`accept ()\*(C'\fR in a loop to accept as many
+connections as possible during one iteration. You might also want to have
+a look at \f(CW\*(C`ev_set_io_collect_interval ()\*(C'\fR to increase the amount of
+readyness notifications you get per iteration.
+.ie n .IP """EVBACKEND_POLL"" (value 2, poll backend, available everywhere except on windows)" 4
+.el .IP "\f(CWEVBACKEND_POLL\fR (value 2, poll backend, available everywhere except on windows)" 4
+.IX Item "EVBACKEND_POLL (value 2, poll backend, available everywhere except on windows)"
+And this is your standard \fIpoll\fR\|(2) backend. It's more complicated
+than select, but handles sparse fds better and has no artificial
+limit on the number of fds you can use (except it will slow down
+considerably with a lot of inactive fds). It scales similarly to select,
+i.e. O(total_fds). See the entry for \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR, above, for
+performance tips.
+.ie n .IP """EVBACKEND_EPOLL"" (value 4, Linux)" 4
+.el .IP "\f(CWEVBACKEND_EPOLL\fR (value 4, Linux)" 4
+.IX Item "EVBACKEND_EPOLL (value 4, Linux)"
+For few fds, this backend is a bit little slower than poll and select,
+but it scales phenomenally better. While poll and select usually scale
+like O(total_fds) where n is the total number of fds (or the highest fd),
+epoll scales either O(1) or O(active_fds). The epoll design has a number
+of shortcomings, such as silently dropping events in some hard-to-detect
+cases and requiring a syscall per fd change, no fork support and bad
+support for dup.
+.Sp
+While stopping, setting and starting an I/O watcher in the same iteration
+will result in some caching, there is still a syscall per such incident
+(because the fd could point to a different file description now), so its
+best to avoid that. Also, \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors might not work
+very well if you register events for both fds.
+.Sp
+Please note that epoll sometimes generates spurious notifications, so you
+need to use non-blocking I/O or other means to avoid blocking when no data
+(or space) is available.
+.Sp
+Best performance from this backend is achieved by not unregistering all
+watchers for a file descriptor until it has been closed, if possible, i.e.
+keep at least one watcher active per fd at all times.
+.Sp
+While nominally embeddeble in other event loops, this feature is broken in
+all kernel versions tested so far.
+.ie n .IP """EVBACKEND_KQUEUE"" (value 8, most \s-1BSD\s0 clones)" 4
+.el .IP "\f(CWEVBACKEND_KQUEUE\fR (value 8, most \s-1BSD\s0 clones)" 4
+.IX Item "EVBACKEND_KQUEUE (value 8, most BSD clones)"
+Kqueue deserves special mention, as at the time of this writing, it
+was broken on all BSDs except NetBSD (usually it doesn't work reliably
+with anything but sockets and pipes, except on Darwin, where of course
+it's completely useless). For this reason it's not being \*(L"autodetected\*(R"
+unless you explicitly specify it explicitly in the flags (i.e. using
+\&\f(CW\*(C`EVBACKEND_KQUEUE\*(C'\fR) or libev was compiled on a known-to-be-good (\-enough)
+system like NetBSD.
+.Sp
+You still can embed kqueue into a normal poll or select backend and use it
+only for sockets (after having made sure that sockets work with kqueue on
+the target platform). See \f(CW\*(C`ev_embed\*(C'\fR watchers for more info.
+.Sp
+It scales in the same way as the epoll backend, but the interface to the
+kernel is more efficient (which says nothing about its actual speed, of
+course). While stopping, setting and starting an I/O watcher does never
+cause an extra syscall as with \f(CW\*(C`EVBACKEND_EPOLL\*(C'\fR, it still adds up to
+two event changes per incident, support for \f(CW\*(C`fork ()\*(C'\fR is very bad and it
+drops fds silently in similarly hard-to-detect cases.
+.Sp
+This backend usually performs well under most conditions.
+.Sp
+While nominally embeddable in other event loops, this doesn't work
+everywhere, so you might need to test for this. And since it is broken
+almost everywhere, you should only use it when you have a lot of sockets
+(for which it usually works), by embedding it into another event loop
+(e.g. \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR) and using it only for
+sockets.
+.ie n .IP """EVBACKEND_DEVPOLL"" (value 16, Solaris 8)" 4
+.el .IP "\f(CWEVBACKEND_DEVPOLL\fR (value 16, Solaris 8)" 4
+.IX Item "EVBACKEND_DEVPOLL (value 16, Solaris 8)"
+This is not implemented yet (and might never be, unless you send me an
+implementation). According to reports, \f(CW\*(C`/dev/poll\*(C'\fR only supports sockets
+and is not embeddable, which would limit the usefulness of this backend
+immensely.
+.ie n .IP """EVBACKEND_PORT"" (value 32, Solaris 10)" 4
+.el .IP "\f(CWEVBACKEND_PORT\fR (value 32, Solaris 10)" 4
+.IX Item "EVBACKEND_PORT (value 32, Solaris 10)"
+This uses the Solaris 10 event port mechanism. As with everything on Solaris,
+it's really slow, but it still scales very well (O(active_fds)).
+.Sp
+Please note that solaris event ports can deliver a lot of spurious
+notifications, so you need to use non-blocking I/O or other means to avoid
+blocking when no data (or space) is available.
+.Sp
+While this backend scales well, it requires one system call per active
+file descriptor per loop iteration. For small and medium numbers of file
+descriptors a \*(L"slow\*(R" \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR backend
+might perform better.
+.Sp
+On the positive side, ignoring the spurious readyness notifications, this
+backend actually performed to specification in all tests and is fully
+embeddable, which is a rare feat among the OS-specific backends.
+.ie n .IP """EVBACKEND_ALL""" 4
+.el .IP "\f(CWEVBACKEND_ALL\fR" 4
+.IX Item "EVBACKEND_ALL"
+Try all backends (even potentially broken ones that wouldn't be tried
+with \f(CW\*(C`EVFLAG_AUTO\*(C'\fR). Since this is a mask, you can do stuff such as
+\&\f(CW\*(C`EVBACKEND_ALL & ~EVBACKEND_KQUEUE\*(C'\fR.
+.Sp
+It is definitely not recommended to use this flag.
+.RE
+.RS 4
+.Sp
+If one or more of these are ored into the flags value, then only these
+backends will be tried (in the reverse order as listed here). If none are
+specified, all backends in \f(CW\*(C`ev_recommended_backends ()\*(C'\fR will be tried.
+.Sp
+The most typical usage is like this:
+.Sp
+.Vb 2
+\& if (!ev_default_loop (0))
+\& fatal ("could not initialise libev, bad $LIBEV_FLAGS in environment?");
+.Ve
+.Sp
+Restrict libev to the select and poll backends, and do not allow
+environment settings to be taken into account:
+.Sp
+.Vb 1
+\& ev_default_loop (EVBACKEND_POLL | EVBACKEND_SELECT | EVFLAG_NOENV);
+.Ve
+.Sp
+Use whatever libev has to offer, but make sure that kqueue is used if
+available (warning, breaks stuff, best use only with your own private
+event loop and only if you know the \s-1OS\s0 supports your types of fds):
+.Sp
+.Vb 1
+\& ev_default_loop (ev_recommended_backends () | EVBACKEND_KQUEUE);
+.Ve
+.RE
+.IP "struct ev_loop *ev_loop_new (unsigned int flags)" 4
+.IX Item "struct ev_loop *ev_loop_new (unsigned int flags)"
+Similar to \f(CW\*(C`ev_default_loop\*(C'\fR, but always creates a new event loop that is
+always distinct from the default loop. Unlike the default loop, it cannot
+handle signal and child watchers, and attempts to do so will be greeted by
+undefined behaviour (or a failed assertion if assertions are enabled).
+.Sp
+Note that this function \fIis\fR thread-safe, and the recommended way to use
+libev with threads is indeed to create one loop per thread, and using the
+default loop in the \*(L"main\*(R" or \*(L"initial\*(R" thread.
+.Sp
+Example: Try to create a event loop that uses epoll and nothing else.
+.Sp
+.Vb 3
+\& struct ev_loop *epoller = ev_loop_new (EVBACKEND_EPOLL | EVFLAG_NOENV);
+\& if (!epoller)
+\& fatal ("no epoll found here, maybe it hides under your chair");
+.Ve
+.IP "ev_default_destroy ()" 4
+.IX Item "ev_default_destroy ()"
+Destroys the default loop again (frees all memory and kernel state
+etc.). None of the active event watchers will be stopped in the normal
+sense, so e.g. \f(CW\*(C`ev_is_active\*(C'\fR might still return true. It is your
+responsibility to either stop all watchers cleanly yoursef \fIbefore\fR
+calling this function, or cope with the fact afterwards (which is usually
+the easiest thing, you can just ignore the watchers and/or \f(CW\*(C`free ()\*(C'\fR them
+for example).
+.Sp
+Note that certain global state, such as signal state, will not be freed by
+this function, and related watchers (such as signal and child watchers)
+would need to be stopped manually.
+.Sp
+In general it is not advisable to call this function except in the
+rare occasion where you really need to free e.g. the signal handling
+pipe fds. If you need dynamically allocated loops it is better to use
+\&\f(CW\*(C`ev_loop_new\*(C'\fR and \f(CW\*(C`ev_loop_destroy\*(C'\fR).
+.IP "ev_loop_destroy (loop)" 4
+.IX Item "ev_loop_destroy (loop)"
+Like \f(CW\*(C`ev_default_destroy\*(C'\fR, but destroys an event loop created by an
+earlier call to \f(CW\*(C`ev_loop_new\*(C'\fR.
+.IP "ev_default_fork ()" 4
+.IX Item "ev_default_fork ()"
+This function sets a flag that causes subsequent \f(CW\*(C`ev_loop\*(C'\fR iterations
+to reinitialise the kernel state for backends that have one. Despite the
+name, you can call it anytime, but it makes most sense after forking, in
+the child process (or both child and parent, but that again makes little
+sense). You \fImust\fR call it in the child before using any of the libev
+functions, and it will only take effect at the next \f(CW\*(C`ev_loop\*(C'\fR iteration.
+.Sp
+On the other hand, you only need to call this function in the child
+process if and only if you want to use the event library in the child. If
+you just fork+exec, you don't have to call it at all.
+.Sp
+The function itself is quite fast and it's usually not a problem to call
+it just in case after a fork. To make this easy, the function will fit in
+quite nicely into a call to \f(CW\*(C`pthread_atfork\*(C'\fR:
+.Sp
+.Vb 1
+\& pthread_atfork (0, 0, ev_default_fork);
+.Ve
+.IP "ev_loop_fork (loop)" 4
+.IX Item "ev_loop_fork (loop)"
+Like \f(CW\*(C`ev_default_fork\*(C'\fR, but acts on an event loop created by
+\&\f(CW\*(C`ev_loop_new\*(C'\fR. Yes, you have to call this on every allocated event loop
+after fork, and how you do this is entirely your own problem.
+.IP "int ev_is_default_loop (loop)" 4
+.IX Item "int ev_is_default_loop (loop)"
+Returns true when the given loop actually is the default loop, false otherwise.
+.IP "unsigned int ev_loop_count (loop)" 4
+.IX Item "unsigned int ev_loop_count (loop)"
+Returns the count of loop iterations for the loop, which is identical to
+the number of times libev did poll for new events. It starts at \f(CW0\fR and
+happily wraps around with enough iterations.
+.Sp
+This value can sometimes be useful as a generation counter of sorts (it
+\&\*(L"ticks\*(R" the number of loop iterations), as it roughly corresponds with
+\&\f(CW\*(C`ev_prepare\*(C'\fR and \f(CW\*(C`ev_check\*(C'\fR calls.
+.IP "unsigned int ev_backend (loop)" 4
+.IX Item "unsigned int ev_backend (loop)"
+Returns one of the \f(CW\*(C`EVBACKEND_*\*(C'\fR flags indicating the event backend in
+use.
+.IP "ev_tstamp ev_now (loop)" 4
+.IX Item "ev_tstamp ev_now (loop)"
+Returns the current \*(L"event loop time\*(R", which is the time the event loop
+received events and started processing them. This timestamp does not
+change as long as callbacks are being processed, and this is also the base
+time used for relative timers. You can treat it as the timestamp of the
+event occurring (or more correctly, libev finding out about it).
+.IP "ev_loop (loop, int flags)" 4
+.IX Item "ev_loop (loop, int flags)"
+Finally, this is it, the event handler. This function usually is called
+after you initialised all your watchers and you want to start handling
+events.
+.Sp
+If the flags argument is specified as \f(CW0\fR, it will not return until
+either no event watchers are active anymore or \f(CW\*(C`ev_unloop\*(C'\fR was called.
+.Sp
+Please note that an explicit \f(CW\*(C`ev_unloop\*(C'\fR is usually better than
+relying on all watchers to be stopped when deciding when a program has
+finished (especially in interactive programs), but having a program that
+automatically loops as long as it has to and no longer by virtue of
+relying on its watchers stopping correctly is a thing of beauty.
+.Sp
+A flags value of \f(CW\*(C`EVLOOP_NONBLOCK\*(C'\fR will look for new events, will handle
+those events and any outstanding ones, but will not block your process in
+case there are no events and will return after one iteration of the loop.
+.Sp
+A flags value of \f(CW\*(C`EVLOOP_ONESHOT\*(C'\fR will look for new events (waiting if
+neccessary) and will handle those and any outstanding ones. It will block
+your process until at least one new event arrives, and will return after
+one iteration of the loop. This is useful if you are waiting for some
+external event in conjunction with something not expressible using other
+libev watchers. However, a pair of \f(CW\*(C`ev_prepare\*(C'\fR/\f(CW\*(C`ev_check\*(C'\fR watchers is
+usually a better approach for this kind of thing.
+.Sp
+Here are the gory details of what \f(CW\*(C`ev_loop\*(C'\fR does:
+.Sp
+.Vb 10
+\& \- Before the first iteration, call any pending watchers.
+\& * If EVFLAG_FORKCHECK was used, check for a fork.
+\& \- If a fork was detected, queue and call all fork watchers.
+\& \- Queue and call all prepare watchers.
+\& \- If we have been forked, recreate the kernel state.
+\& \- Update the kernel state with all outstanding changes.
+\& \- Update the "event loop time".
+\& \- Calculate for how long to sleep or block, if at all
+\& (active idle watchers, EVLOOP_NONBLOCK or not having
+\& any active watchers at all will result in not sleeping).
+\& \- Sleep if the I/O and timer collect interval say so.
+\& \- Block the process, waiting for any events.
+\& \- Queue all outstanding I/O (fd) events.
+\& \- Update the "event loop time" and do time jump handling.
+\& \- Queue all outstanding timers.
+\& \- Queue all outstanding periodics.
+\& \- If no events are pending now, queue all idle watchers.
+\& \- Queue all check watchers.
+\& \- Call all queued watchers in reverse order (i.e. check watchers first).
+\& Signals and child watchers are implemented as I/O watchers, and will
+\& be handled here by queueing them when their watcher gets executed.
+\& \- If ev_unloop has been called, or EVLOOP_ONESHOT or EVLOOP_NONBLOCK
+\& were used, or there are no active watchers, return, otherwise
+\& continue with step *.
+.Ve
+.Sp
+Example: Queue some jobs and then loop until no events are outstanding
+anymore.
+.Sp
+.Vb 4
+\& ... queue jobs here, make sure they register event watchers as long
+\& ... as they still have work to do (even an idle watcher will do..)
+\& ev_loop (my_loop, 0);
+\& ... jobs done. yeah!
+.Ve
+.IP "ev_unloop (loop, how)" 4
+.IX Item "ev_unloop (loop, how)"
+Can be used to make a call to \f(CW\*(C`ev_loop\*(C'\fR return early (but only after it
+has processed all outstanding events). The \f(CW\*(C`how\*(C'\fR argument must be either
+\&\f(CW\*(C`EVUNLOOP_ONE\*(C'\fR, which will make the innermost \f(CW\*(C`ev_loop\*(C'\fR call return, or
+\&\f(CW\*(C`EVUNLOOP_ALL\*(C'\fR, which will make all nested \f(CW\*(C`ev_loop\*(C'\fR calls return.
+.Sp
+This \*(L"unloop state\*(R" will be cleared when entering \f(CW\*(C`ev_loop\*(C'\fR again.
+.IP "ev_ref (loop)" 4
+.IX Item "ev_ref (loop)"
+.PD 0
+.IP "ev_unref (loop)" 4
+.IX Item "ev_unref (loop)"
+.PD
+Ref/unref can be used to add or remove a reference count on the event
+loop: Every watcher keeps one reference, and as long as the reference
+count is nonzero, \f(CW\*(C`ev_loop\*(C'\fR will not return on its own. If you have
+a watcher you never unregister that should not keep \f(CW\*(C`ev_loop\*(C'\fR from
+returning, \fIev_unref()\fR after starting, and \fIev_ref()\fR before stopping it. For
+example, libev itself uses this for its internal signal pipe: It is not
+visible to the libev user and should not keep \f(CW\*(C`ev_loop\*(C'\fR from exiting if
+no event watchers registered by it are active. It is also an excellent
+way to do this for generic recurring timers or from within third-party
+libraries. Just remember to \fIunref after start\fR and \fIref before stop\fR
+(but only if the watcher wasn't active before, or was active before,
+respectively).
+.Sp
+Example: Create a signal watcher, but keep it from keeping \f(CW\*(C`ev_loop\*(C'\fR
+running when nothing else is active.
+.Sp
+.Vb 4
+\& struct ev_signal exitsig;
+\& ev_signal_init (&exitsig, sig_cb, SIGINT);
+\& ev_signal_start (loop, &exitsig);
+\& evf_unref (loop);
+.Ve
+.Sp
+Example: For some weird reason, unregister the above signal handler again.
+.Sp
+.Vb 2
+\& ev_ref (loop);
+\& ev_signal_stop (loop, &exitsig);
+.Ve
+.IP "ev_set_io_collect_interval (loop, ev_tstamp interval)" 4
+.IX Item "ev_set_io_collect_interval (loop, ev_tstamp interval)"
+.PD 0
+.IP "ev_set_timeout_collect_interval (loop, ev_tstamp interval)" 4
+.IX Item "ev_set_timeout_collect_interval (loop, ev_tstamp interval)"
+.PD
+These advanced functions influence the time that libev will spend waiting
+for events. Both are by default \f(CW0\fR, meaning that libev will try to
+invoke timer/periodic callbacks and I/O callbacks with minimum latency.
+.Sp
+Setting these to a higher value (the \f(CW\*(C`interval\*(C'\fR \fImust\fR be >= \f(CW0\fR)
+allows libev to delay invocation of I/O and timer/periodic callbacks to
+increase efficiency of loop iterations.
+.Sp
+The background is that sometimes your program runs just fast enough to
+handle one (or very few) event(s) per loop iteration. While this makes
+the program responsive, it also wastes a lot of \s-1CPU\s0 time to poll for new
+events, especially with backends like \f(CW\*(C`select ()\*(C'\fR which have a high
+overhead for the actual polling but can deliver many events at once.
+.Sp
+By setting a higher \fIio collect interval\fR you allow libev to spend more
+time collecting I/O events, so you can handle more events per iteration,
+at the cost of increasing latency. Timeouts (both \f(CW\*(C`ev_periodic\*(C'\fR and
+\&\f(CW\*(C`ev_timer\*(C'\fR) will be not affected. Setting this to a non-null value will
+introduce an additional \f(CW\*(C`ev_sleep ()\*(C'\fR call into most loop iterations.
+.Sp
+Likewise, by setting a higher \fItimeout collect interval\fR you allow libev
+to spend more time collecting timeouts, at the expense of increased
+latency (the watcher callback will be called later). \f(CW\*(C`ev_io\*(C'\fR watchers
+will not be affected. Setting this to a non-null value will not introduce
+any overhead in libev.
+.Sp
+Many (busy) programs can usually benefit by setting the io collect
+interval to a value near \f(CW0.1\fR or so, which is often enough for
+interactive servers (of course not for games), likewise for timeouts. It
+usually doesn't make much sense to set it to a lower value than \f(CW0.01\fR,
+as this approsaches the timing granularity of most systems.
+.SH "ANATOMY OF A WATCHER"
+.IX Header "ANATOMY OF A WATCHER"
+A watcher is a structure that you create and register to record your
+interest in some event. For instance, if you want to wait for \s-1STDIN\s0 to
+become readable, you would create an \f(CW\*(C`ev_io\*(C'\fR watcher for that:
+.PP
+.Vb 5
+\& static void my_cb (struct ev_loop *loop, struct ev_io *w, int revents)
+\& {
+\& ev_io_stop (w);
+\& ev_unloop (loop, EVUNLOOP_ALL);
+\& }
+\&
+\& struct ev_loop *loop = ev_default_loop (0);
+\& struct ev_io stdin_watcher;
+\& ev_init (&stdin_watcher, my_cb);
+\& ev_io_set (&stdin_watcher, STDIN_FILENO, EV_READ);
+\& ev_io_start (loop, &stdin_watcher);
+\& ev_loop (loop, 0);
+.Ve
+.PP
+As you can see, you are responsible for allocating the memory for your
+watcher structures (and it is usually a bad idea to do this on the stack,
+although this can sometimes be quite valid).
+.PP
+Each watcher structure must be initialised by a call to \f(CW\*(C`ev_init
+(watcher *, callback)\*(C'\fR, which expects a callback to be provided. This
+callback gets invoked each time the event occurs (or, in the case of io
+watchers, each time the event loop detects that the file descriptor given
+is readable and/or writable).
+.PP
+Each watcher type has its own \f(CW\*(C`ev_<type>_set (watcher *, ...)\*(C'\fR macro
+with arguments specific to this watcher type. There is also a macro
+to combine initialisation and setting in one call: \f(CW\*(C`ev_<type>_init
+(watcher *, callback, ...)\*(C'\fR.
+.PP
+To make the watcher actually watch out for events, you have to start it
+with a watcher-specific start function (\f(CW\*(C`ev_<type>_start (loop, watcher
+*)\*(C'\fR), and you can stop watching for events at any time by calling the
+corresponding stop function (\f(CW\*(C`ev_<type>_stop (loop, watcher *)\*(C'\fR.
+.PP
+As long as your watcher is active (has been started but not stopped) you
+must not touch the values stored in it. Most specifically you must never
+reinitialise it or call its \f(CW\*(C`set\*(C'\fR macro.
+.PP
+Each and every callback receives the event loop pointer as first, the
+registered watcher structure as second, and a bitset of received events as
+third argument.
+.PP
+The received events usually include a single bit per event type received
+(you can receive multiple events at the same time). The possible bit masks
+are:
+.ie n .IP """EV_READ""" 4
+.el .IP "\f(CWEV_READ\fR" 4
+.IX Item "EV_READ"
+.PD 0
+.ie n .IP """EV_WRITE""" 4
+.el .IP "\f(CWEV_WRITE\fR" 4
+.IX Item "EV_WRITE"
+.PD
+The file descriptor in the \f(CW\*(C`ev_io\*(C'\fR watcher has become readable and/or
+writable.
+.ie n .IP """EV_TIMEOUT""" 4
+.el .IP "\f(CWEV_TIMEOUT\fR" 4
+.IX Item "EV_TIMEOUT"
+The \f(CW\*(C`ev_timer\*(C'\fR watcher has timed out.
+.ie n .IP """EV_PERIODIC""" 4
+.el .IP "\f(CWEV_PERIODIC\fR" 4
+.IX Item "EV_PERIODIC"
+The \f(CW\*(C`ev_periodic\*(C'\fR watcher has timed out.
+.ie n .IP """EV_SIGNAL""" 4
+.el .IP "\f(CWEV_SIGNAL\fR" 4
+.IX Item "EV_SIGNAL"
+The signal specified in the \f(CW\*(C`ev_signal\*(C'\fR watcher has been received by a thread.
+.ie n .IP """EV_CHILD""" 4
+.el .IP "\f(CWEV_CHILD\fR" 4
+.IX Item "EV_CHILD"
+The pid specified in the \f(CW\*(C`ev_child\*(C'\fR watcher has received a status change.
+.ie n .IP """EV_STAT""" 4
+.el .IP "\f(CWEV_STAT\fR" 4
+.IX Item "EV_STAT"
+The path specified in the \f(CW\*(C`ev_stat\*(C'\fR watcher changed its attributes somehow.
+.ie n .IP """EV_IDLE""" 4
+.el .IP "\f(CWEV_IDLE\fR" 4
+.IX Item "EV_IDLE"
+The \f(CW\*(C`ev_idle\*(C'\fR watcher has determined that you have nothing better to do.
+.ie n .IP """EV_PREPARE""" 4
+.el .IP "\f(CWEV_PREPARE\fR" 4
+.IX Item "EV_PREPARE"
+.PD 0
+.ie n .IP """EV_CHECK""" 4
+.el .IP "\f(CWEV_CHECK\fR" 4
+.IX Item "EV_CHECK"
+.PD
+All \f(CW\*(C`ev_prepare\*(C'\fR watchers are invoked just \fIbefore\fR \f(CW\*(C`ev_loop\*(C'\fR starts
+to gather new events, and all \f(CW\*(C`ev_check\*(C'\fR watchers are invoked just after
+\&\f(CW\*(C`ev_loop\*(C'\fR has gathered them, but before it invokes any callbacks for any
+received events. Callbacks of both watcher types can start and stop as
+many watchers as they want, and all of them will be taken into account
+(for example, a \f(CW\*(C`ev_prepare\*(C'\fR watcher might start an idle watcher to keep
+\&\f(CW\*(C`ev_loop\*(C'\fR from blocking).
+.ie n .IP """EV_EMBED""" 4
+.el .IP "\f(CWEV_EMBED\fR" 4
+.IX Item "EV_EMBED"
+The embedded event loop specified in the \f(CW\*(C`ev_embed\*(C'\fR watcher needs attention.
+.ie n .IP """EV_FORK""" 4
+.el .IP "\f(CWEV_FORK\fR" 4
+.IX Item "EV_FORK"
+The event loop has been resumed in the child process after fork (see
+\&\f(CW\*(C`ev_fork\*(C'\fR).
+.ie n .IP """EV_ASYNC""" 4
+.el .IP "\f(CWEV_ASYNC\fR" 4
+.IX Item "EV_ASYNC"
+The given async watcher has been asynchronously notified (see \f(CW\*(C`ev_async\*(C'\fR).
+.ie n .IP """EV_ERROR""" 4
+.el .IP "\f(CWEV_ERROR\fR" 4
+.IX Item "EV_ERROR"
+An unspecified error has occured, the watcher has been stopped. This might
+happen because the watcher could not be properly started because libev
+ran out of memory, a file descriptor was found to be closed or any other
+problem. You best act on it by reporting the problem and somehow coping
+with the watcher being stopped.
+.Sp
+Libev will usually signal a few \*(L"dummy\*(R" events together with an error,
+for example it might indicate that a fd is readable or writable, and if
+your callbacks is well-written it can just attempt the operation and cope
+with the error from \fIread()\fR or \fIwrite()\fR. This will not work in multithreaded
+programs, though, so beware.
+.Sh "\s-1GENERIC\s0 \s-1WATCHER\s0 \s-1FUNCTIONS\s0"
+.IX Subsection "GENERIC WATCHER FUNCTIONS"
+In the following description, \f(CW\*(C`TYPE\*(C'\fR stands for the watcher type,
+e.g. \f(CW\*(C`timer\*(C'\fR for \f(CW\*(C`ev_timer\*(C'\fR watchers and \f(CW\*(C`io\*(C'\fR for \f(CW\*(C`ev_io\*(C'\fR watchers.
+.ie n .IP """ev_init"" (ev_TYPE *watcher, callback)" 4
+.el .IP "\f(CWev_init\fR (ev_TYPE *watcher, callback)" 4
+.IX Item "ev_init (ev_TYPE *watcher, callback)"
+This macro initialises the generic portion of a watcher. The contents
+of the watcher object can be arbitrary (so \f(CW\*(C`malloc\*(C'\fR will do). Only
+the generic parts of the watcher are initialised, you \fIneed\fR to call
+the type-specific \f(CW\*(C`ev_TYPE_set\*(C'\fR macro afterwards to initialise the
+type-specific parts. For each type there is also a \f(CW\*(C`ev_TYPE_init\*(C'\fR macro
+which rolls both calls into one.
+.Sp
+You can reinitialise a watcher at any time as long as it has been stopped
+(or never started) and there are no pending events outstanding.
+.Sp
+The callback is always of type \f(CW\*(C`void (*)(ev_loop *loop, ev_TYPE *watcher,
+int revents)\*(C'\fR.
+.ie n .IP """ev_TYPE_set"" (ev_TYPE *, [args])" 4
+.el .IP "\f(CWev_TYPE_set\fR (ev_TYPE *, [args])" 4
+.IX Item "ev_TYPE_set (ev_TYPE *, [args])"
+This macro initialises the type-specific parts of a watcher. You need to
+call \f(CW\*(C`ev_init\*(C'\fR at least once before you call this macro, but you can
+call \f(CW\*(C`ev_TYPE_set\*(C'\fR any number of times. You must not, however, call this
+macro on a watcher that is active (it can be pending, however, which is a
+difference to the \f(CW\*(C`ev_init\*(C'\fR macro).
+.Sp
+Although some watcher types do not have type-specific arguments
+(e.g. \f(CW\*(C`ev_prepare\*(C'\fR) you still need to call its \f(CW\*(C`set\*(C'\fR macro.
+.ie n .IP """ev_TYPE_init"" (ev_TYPE *watcher, callback, [args])" 4
+.el .IP "\f(CWev_TYPE_init\fR (ev_TYPE *watcher, callback, [args])" 4
+.IX Item "ev_TYPE_init (ev_TYPE *watcher, callback, [args])"
+This convinience macro rolls both \f(CW\*(C`ev_init\*(C'\fR and \f(CW\*(C`ev_TYPE_set\*(C'\fR macro
+calls into a single call. This is the most convinient method to initialise
+a watcher. The same limitations apply, of course.
+.ie n .IP """ev_TYPE_start"" (loop *, ev_TYPE *watcher)" 4
+.el .IP "\f(CWev_TYPE_start\fR (loop *, ev_TYPE *watcher)" 4
+.IX Item "ev_TYPE_start (loop *, ev_TYPE *watcher)"
+Starts (activates) the given watcher. Only active watchers will receive
+events. If the watcher is already active nothing will happen.
+.ie n .IP """ev_TYPE_stop"" (loop *, ev_TYPE *watcher)" 4
+.el .IP "\f(CWev_TYPE_stop\fR (loop *, ev_TYPE *watcher)" 4
+.IX Item "ev_TYPE_stop (loop *, ev_TYPE *watcher)"
+Stops the given watcher again (if active) and clears the pending
+status. It is possible that stopped watchers are pending (for example,
+non-repeating timers are being stopped when they become pending), but
+\&\f(CW\*(C`ev_TYPE_stop\*(C'\fR ensures that the watcher is neither active nor pending. If
+you want to free or reuse the memory used by the watcher it is therefore a
+good idea to always call its \f(CW\*(C`ev_TYPE_stop\*(C'\fR function.
+.IP "bool ev_is_active (ev_TYPE *watcher)" 4
+.IX Item "bool ev_is_active (ev_TYPE *watcher)"
+Returns a true value iff the watcher is active (i.e. it has been started
+and not yet been stopped). As long as a watcher is active you must not modify
+it.
+.IP "bool ev_is_pending (ev_TYPE *watcher)" 4
+.IX Item "bool ev_is_pending (ev_TYPE *watcher)"
+Returns a true value iff the watcher is pending, (i.e. it has outstanding
+events but its callback has not yet been invoked). As long as a watcher
+is pending (but not active) you must not call an init function on it (but
+\&\f(CW\*(C`ev_TYPE_set\*(C'\fR is safe), you must not change its priority, and you must
+make sure the watcher is available to libev (e.g. you cannot \f(CW\*(C`free ()\*(C'\fR
+it).
+.IP "callback ev_cb (ev_TYPE *watcher)" 4
+.IX Item "callback ev_cb (ev_TYPE *watcher)"
+Returns the callback currently set on the watcher.
+.IP "ev_cb_set (ev_TYPE *watcher, callback)" 4
+.IX Item "ev_cb_set (ev_TYPE *watcher, callback)"
+Change the callback. You can change the callback at virtually any time
+(modulo threads).
+.IP "ev_set_priority (ev_TYPE *watcher, priority)" 4
+.IX Item "ev_set_priority (ev_TYPE *watcher, priority)"
+.PD 0
+.IP "int ev_priority (ev_TYPE *watcher)" 4
+.IX Item "int ev_priority (ev_TYPE *watcher)"
+.PD
+Set and query the priority of the watcher. The priority is a small
+integer between \f(CW\*(C`EV_MAXPRI\*(C'\fR (default: \f(CW2\fR) and \f(CW\*(C`EV_MINPRI\*(C'\fR
+(default: \f(CW\*(C`\-2\*(C'\fR). Pending watchers with higher priority will be invoked
+before watchers with lower priority, but priority will not keep watchers
+from being executed (except for \f(CW\*(C`ev_idle\*(C'\fR watchers).
+.Sp
+This means that priorities are \fIonly\fR used for ordering callback
+invocation after new events have been received. This is useful, for
+example, to reduce latency after idling, or more often, to bind two
+watchers on the same event and make sure one is called first.
+.Sp
+If you need to suppress invocation when higher priority events are pending
+you need to look at \f(CW\*(C`ev_idle\*(C'\fR watchers, which provide this functionality.
+.Sp
+You \fImust not\fR change the priority of a watcher as long as it is active or
+pending.
+.Sp
+The default priority used by watchers when no priority has been set is
+always \f(CW0\fR, which is supposed to not be too high and not be too low :).
+.Sp
+Setting a priority outside the range of \f(CW\*(C`EV_MINPRI\*(C'\fR to \f(CW\*(C`EV_MAXPRI\*(C'\fR is
+fine, as long as you do not mind that the priority value you query might
+or might not have been adjusted to be within valid range.
+.IP "ev_invoke (loop, ev_TYPE *watcher, int revents)" 4
+.IX Item "ev_invoke (loop, ev_TYPE *watcher, int revents)"
+Invoke the \f(CW\*(C`watcher\*(C'\fR with the given \f(CW\*(C`loop\*(C'\fR and \f(CW\*(C`revents\*(C'\fR. Neither
+\&\f(CW\*(C`loop\*(C'\fR nor \f(CW\*(C`revents\*(C'\fR need to be valid as long as the watcher callback
+can deal with that fact.
+.IP "int ev_clear_pending (loop, ev_TYPE *watcher)" 4
+.IX Item "int ev_clear_pending (loop, ev_TYPE *watcher)"
+If the watcher is pending, this function returns clears its pending status
+and returns its \f(CW\*(C`revents\*(C'\fR bitset (as if its callback was invoked). If the
+watcher isn't pending it does nothing and returns \f(CW0\fR.
+.Sh "\s-1ASSOCIATING\s0 \s-1CUSTOM\s0 \s-1DATA\s0 \s-1WITH\s0 A \s-1WATCHER\s0"
+.IX Subsection "ASSOCIATING CUSTOM DATA WITH A WATCHER"
+Each watcher has, by default, a member \f(CW\*(C`void *data\*(C'\fR that you can change
+and read at any time, libev will completely ignore it. This can be used
+to associate arbitrary data with your watcher. If you need more data and
+don't want to allocate memory and store a pointer to it in that data
+member, you can also \*(L"subclass\*(R" the watcher type and provide your own
+data:
+.PP
+.Vb 7
+\& struct my_io
+\& {
+\& struct ev_io io;
+\& int otherfd;
+\& void *somedata;
+\& struct whatever *mostinteresting;
+\& }
+.Ve
+.PP
+And since your callback will be called with a pointer to the watcher, you
+can cast it back to your own type:
+.PP
+.Vb 5
+\& static void my_cb (struct ev_loop *loop, struct ev_io *w_, int revents)
+\& {
+\& struct my_io *w = (struct my_io *)w_;
+\& ...
+\& }
+.Ve
+.PP
+More interesting and less C\-conformant ways of casting your callback type
+instead have been omitted.
+.PP
+Another common scenario is having some data structure with multiple
+watchers:
+.PP
+.Vb 6
+\& struct my_biggy
+\& {
+\& int some_data;
+\& ev_timer t1;
+\& ev_timer t2;
+\& }
+.Ve
+.PP
+In this case getting the pointer to \f(CW\*(C`my_biggy\*(C'\fR is a bit more complicated,
+you need to use \f(CW\*(C`offsetof\*(C'\fR:
+.PP
+.Vb 1
+\& #include <stddef.h>
+\&
+\& static void
+\& t1_cb (EV_P_ struct ev_timer *w, int revents)
+\& {
+\& struct my_biggy big = (struct my_biggy *
+\& (((char *)w) \- offsetof (struct my_biggy, t1));
+\& }
+\&
+\& static void
+\& t2_cb (EV_P_ struct ev_timer *w, int revents)
+\& {
+\& struct my_biggy big = (struct my_biggy *
+\& (((char *)w) \- offsetof (struct my_biggy, t2));
+\& }
+.Ve
+.SH "WATCHER TYPES"
+.IX Header "WATCHER TYPES"
+This section describes each watcher in detail, but will not repeat
+information given in the last section. Any initialisation/set macros,
+functions and members specific to the watcher type are explained.
+.PP
+Members are additionally marked with either \fI[read\-only]\fR, meaning that,
+while the watcher is active, you can look at the member and expect some
+sensible content, but you must not modify it (you can modify it while the
+watcher is stopped to your hearts content), or \fI[read\-write]\fR, which
+means you can expect it to have some sensible content while the watcher
+is active, but you can also modify it. Modifying it may not do something
+sensible or take immediate effect (or do anything at all), but libev will
+not crash or malfunction in any way.
+.ie n .Sh """ev_io"" \- is this file descriptor readable or writable?"
+.el .Sh "\f(CWev_io\fP \- is this file descriptor readable or writable?"
+.IX Subsection "ev_io - is this file descriptor readable or writable?"
+I/O watchers check whether a file descriptor is readable or writable
+in each iteration of the event loop, or, more precisely, when reading
+would not block the process and writing would at least be able to write
+some data. This behaviour is called level-triggering because you keep
+receiving events as long as the condition persists. Remember you can stop
+the watcher if you don't want to act on the event and neither want to
+receive future events.
+.PP
+In general you can register as many read and/or write event watchers per
+fd as you want (as long as you don't confuse yourself). Setting all file
+descriptors to non-blocking mode is also usually a good idea (but not
+required if you know what you are doing).
+.PP
+If you must do this, then force the use of a known-to-be-good backend
+(at the time of this writing, this includes only \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR and
+\&\f(CW\*(C`EVBACKEND_POLL\*(C'\fR).
+.PP
+Another thing you have to watch out for is that it is quite easy to
+receive \*(L"spurious\*(R" readyness notifications, that is your callback might
+be called with \f(CW\*(C`EV_READ\*(C'\fR but a subsequent \f(CW\*(C`read\*(C'\fR(2) will actually block
+because there is no data. Not only are some backends known to create a
+lot of those (for example solaris ports), it is very easy to get into
+this situation even with a relatively standard program structure. Thus
+it is best to always use non-blocking I/O: An extra \f(CW\*(C`read\*(C'\fR(2) returning
+\&\f(CW\*(C`EAGAIN\*(C'\fR is far preferable to a program hanging until some data arrives.
+.PP
+If you cannot run the fd in non-blocking mode (for example you should not
+play around with an Xlib connection), then you have to seperately re-test
+whether a file descriptor is really ready with a known-to-be good interface
+such as poll (fortunately in our Xlib example, Xlib already does this on
+its own, so its quite safe to use).
+.PP
+\fIThe special problem of disappearing file descriptors\fR
+.IX Subsection "The special problem of disappearing file descriptors"
+.PP
+Some backends (e.g. kqueue, epoll) need to be told about closing a file
+descriptor (either by calling \f(CW\*(C`close\*(C'\fR explicitly or by any other means,
+such as \f(CW\*(C`dup\*(C'\fR). The reason is that you register interest in some file
+descriptor, but when it goes away, the operating system will silently drop
+this interest. If another file descriptor with the same number then is
+registered with libev, there is no efficient way to see that this is, in
+fact, a different file descriptor.
+.PP
+To avoid having to explicitly tell libev about such cases, libev follows
+the following policy: Each time \f(CW\*(C`ev_io_set\*(C'\fR is being called, libev
+will assume that this is potentially a new file descriptor, otherwise
+it is assumed that the file descriptor stays the same. That means that
+you \fIhave\fR to call \f(CW\*(C`ev_io_set\*(C'\fR (or \f(CW\*(C`ev_io_init\*(C'\fR) when you change the
+descriptor even if the file descriptor number itself did not change.
+.PP
+This is how one would do it normally anyway, the important point is that
+the libev application should not optimise around libev but should leave
+optimisations to libev.
+.PP
+\fIThe special problem of dup'ed file descriptors\fR
+.IX Subsection "The special problem of dup'ed file descriptors"
+.PP
+Some backends (e.g. epoll), cannot register events for file descriptors,
+but only events for the underlying file descriptions. That means when you
+have \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors or weirder constellations, and register
+events for them, only one file descriptor might actually receive events.
+.PP
+There is no workaround possible except not registering events
+for potentially \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors, or to resort to
+\&\f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR.
+.PP
+\fIThe special problem of fork\fR
+.IX Subsection "The special problem of fork"
+.PP
+Some backends (epoll, kqueue) do not support \f(CW\*(C`fork ()\*(C'\fR at all or exhibit
+useless behaviour. Libev fully supports fork, but needs to be told about
+it in the child.
+.PP
+To support fork in your programs, you either have to call
+\&\f(CW\*(C`ev_default_fork ()\*(C'\fR or \f(CW\*(C`ev_loop_fork ()\*(C'\fR after a fork in the child,
+enable \f(CW\*(C`EVFLAG_FORKCHECK\*(C'\fR, or resort to \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or
+\&\f(CW\*(C`EVBACKEND_POLL\*(C'\fR.
+.PP
+\fIThe special problem of \s-1SIGPIPE\s0\fR
+.IX Subsection "The special problem of SIGPIPE"
+.PP
+While not really specific to libev, it is easy to forget about \s-1SIGPIPE:\s0
+when reading from a pipe whose other end has been closed, your program
+gets send a \s-1SIGPIPE\s0, which, by default, aborts your program. For most
+programs this is sensible behaviour, for daemons, this is usually
+undesirable.
+.PP
+So when you encounter spurious, unexplained daemon exits, make sure you
+ignore \s-1SIGPIPE\s0 (and maybe make sure you log the exit status of your daemon
+somewhere, as that would have given you a big clue).
+.PP
+\fIWatcher-Specific Functions\fR
+.IX Subsection "Watcher-Specific Functions"
+.IP "ev_io_init (ev_io *, callback, int fd, int events)" 4
+.IX Item "ev_io_init (ev_io *, callback, int fd, int events)"
+.PD 0
+.IP "ev_io_set (ev_io *, int fd, int events)" 4
+.IX Item "ev_io_set (ev_io *, int fd, int events)"
+.PD
+Configures an \f(CW\*(C`ev_io\*(C'\fR watcher. The \f(CW\*(C`fd\*(C'\fR is the file descriptor to
+rceeive events for and events is either \f(CW\*(C`EV_READ\*(C'\fR, \f(CW\*(C`EV_WRITE\*(C'\fR or
+\&\f(CW\*(C`EV_READ | EV_WRITE\*(C'\fR to receive the given events.
+.IP "int fd [read\-only]" 4
+.IX Item "int fd [read-only]"
+The file descriptor being watched.
+.IP "int events [read\-only]" 4
+.IX Item "int events [read-only]"
+The events being watched.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Call \f(CW\*(C`stdin_readable_cb\*(C'\fR when \s-1STDIN_FILENO\s0 has become, well
+readable, but only once. Since it is likely line-buffered, you could
+attempt to read a whole line in the callback.
+.PP
+.Vb 6
+\& static void
+\& stdin_readable_cb (struct ev_loop *loop, struct ev_io *w, int revents)
+\& {
+\& ev_io_stop (loop, w);
+\& .. read from stdin here (or from w\->fd) and haqndle any I/O errors
+\& }
+\&
+\& ...
+\& struct ev_loop *loop = ev_default_init (0);
+\& struct ev_io stdin_readable;
+\& ev_io_init (&stdin_readable, stdin_readable_cb, STDIN_FILENO, EV_READ);
+\& ev_io_start (loop, &stdin_readable);
+\& ev_loop (loop, 0);
+.Ve
+.ie n .Sh """ev_timer"" \- relative and optionally repeating timeouts"
+.el .Sh "\f(CWev_timer\fP \- relative and optionally repeating timeouts"
+.IX Subsection "ev_timer - relative and optionally repeating timeouts"
+Timer watchers are simple relative timers that generate an event after a
+given time, and optionally repeating in regular intervals after that.
+.PP
+The timers are based on real time, that is, if you register an event that
+times out after an hour and you reset your system clock to last years
+time, it will still time out after (roughly) and hour. \*(L"Roughly\*(R" because
+detecting time jumps is hard, and some inaccuracies are unavoidable (the
+monotonic clock option helps a lot here).
+.PP
+The relative timeouts are calculated relative to the \f(CW\*(C`ev_now ()\*(C'\fR
+time. This is usually the right thing as this timestamp refers to the time
+of the event triggering whatever timeout you are modifying/starting. If
+you suspect event processing to be delayed and you \fIneed\fR to base the timeout
+on the current time, use something like this to adjust for this:
+.PP
+.Vb 1
+\& ev_timer_set (&timer, after + ev_now () \- ev_time (), 0.);
+.Ve
+.PP
+The callback is guarenteed to be invoked only when its timeout has passed,
+but if multiple timers become ready during the same loop iteration then
+order of execution is undefined.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat)" 4
+.IX Item "ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat)"
+.PD 0
+.IP "ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat)" 4
+.IX Item "ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat)"
+.PD
+Configure the timer to trigger after \f(CW\*(C`after\*(C'\fR seconds. If \f(CW\*(C`repeat\*(C'\fR is
+\&\f(CW0.\fR, then it will automatically be stopped. If it is positive, then the
+timer will automatically be configured to trigger again \f(CW\*(C`repeat\*(C'\fR seconds
+later, again, and again, until stopped manually.
+.Sp
+The timer itself will do a best-effort at avoiding drift, that is, if you
+configure a timer to trigger every 10 seconds, then it will trigger at
+exactly 10 second intervals. If, however, your program cannot keep up with
+the timer (because it takes longer than those 10 seconds to do stuff) the
+timer will not fire more than once per event loop iteration.
+.IP "ev_timer_again (loop, ev_timer *)" 4
+.IX Item "ev_timer_again (loop, ev_timer *)"
+This will act as if the timer timed out and restart it again if it is
+repeating. The exact semantics are:
+.Sp
+If the timer is pending, its pending status is cleared.
+.Sp
+If the timer is started but nonrepeating, stop it (as if it timed out).
+.Sp
+If the timer is repeating, either start it if necessary (with the
+\&\f(CW\*(C`repeat\*(C'\fR value), or reset the running timer to the \f(CW\*(C`repeat\*(C'\fR value.
+.Sp
+This sounds a bit complicated, but here is a useful and typical
+example: Imagine you have a tcp connection and you want a so-called idle
+timeout, that is, you want to be called when there have been, say, 60
+seconds of inactivity on the socket. The easiest way to do this is to
+configure an \f(CW\*(C`ev_timer\*(C'\fR with a \f(CW\*(C`repeat\*(C'\fR value of \f(CW60\fR and then call
+\&\f(CW\*(C`ev_timer_again\*(C'\fR each time you successfully read or write some data. If
+you go into an idle state where you do not expect data to travel on the
+socket, you can \f(CW\*(C`ev_timer_stop\*(C'\fR the timer, and \f(CW\*(C`ev_timer_again\*(C'\fR will
+automatically restart it if need be.
+.Sp
+That means you can ignore the \f(CW\*(C`after\*(C'\fR value and \f(CW\*(C`ev_timer_start\*(C'\fR
+altogether and only ever use the \f(CW\*(C`repeat\*(C'\fR value and \f(CW\*(C`ev_timer_again\*(C'\fR:
+.Sp
+.Vb 8
+\& ev_timer_init (timer, callback, 0., 5.);
+\& ev_timer_again (loop, timer);
+\& ...
+\& timer\->again = 17.;
+\& ev_timer_again (loop, timer);
+\& ...
+\& timer\->again = 10.;
+\& ev_timer_again (loop, timer);
+.Ve
+.Sp
+This is more slightly efficient then stopping/starting the timer each time
+you want to modify its timeout value.
+.IP "ev_tstamp repeat [read\-write]" 4
+.IX Item "ev_tstamp repeat [read-write]"
+The current \f(CW\*(C`repeat\*(C'\fR value. Will be used each time the watcher times out
+or \f(CW\*(C`ev_timer_again\*(C'\fR is called and determines the next timeout (if any),
+which is also when any modifications are taken into account.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Create a timer that fires after 60 seconds.
+.PP
+.Vb 5
+\& static void
+\& one_minute_cb (struct ev_loop *loop, struct ev_timer *w, int revents)
+\& {
+\& .. one minute over, w is actually stopped right here
+\& }
+\&
+\& struct ev_timer mytimer;
+\& ev_timer_init (&mytimer, one_minute_cb, 60., 0.);
+\& ev_timer_start (loop, &mytimer);
+.Ve
+.PP
+Example: Create a timeout timer that times out after 10 seconds of
+inactivity.
+.PP
+.Vb 5
+\& static void
+\& timeout_cb (struct ev_loop *loop, struct ev_timer *w, int revents)
+\& {
+\& .. ten seconds without any activity
+\& }
+\&
+\& struct ev_timer mytimer;
+\& ev_timer_init (&mytimer, timeout_cb, 0., 10.); /* note, only repeat used */
+\& ev_timer_again (&mytimer); /* start timer */
+\& ev_loop (loop, 0);
+\&
+\& // and in some piece of code that gets executed on any "activity":
+\& // reset the timeout to start ticking again at 10 seconds
+\& ev_timer_again (&mytimer);
+.Ve
+.ie n .Sh """ev_periodic"" \- to cron or not to cron?"
+.el .Sh "\f(CWev_periodic\fP \- to cron or not to cron?"
+.IX Subsection "ev_periodic - to cron or not to cron?"
+Periodic watchers are also timers of a kind, but they are very versatile
+(and unfortunately a bit complex).
+.PP
+Unlike \f(CW\*(C`ev_timer\*(C'\fR's, they are not based on real time (or relative time)
+but on wallclock time (absolute time). You can tell a periodic watcher
+to trigger \*(L"at\*(R" some specific point in time. For example, if you tell a
+periodic watcher to trigger in 10 seconds (by specifiying e.g. \f(CW\*(C`ev_now ()
++ 10.\*(C'\fR) and then reset your system clock to the last year, then it will
+take a year to trigger the event (unlike an \f(CW\*(C`ev_timer\*(C'\fR, which would trigger
+roughly 10 seconds later).
+.PP
+They can also be used to implement vastly more complex timers, such as
+triggering an event on each midnight, local time or other, complicated,
+rules.
+.PP
+As with timers, the callback is guarenteed to be invoked only when the
+time (\f(CW\*(C`at\*(C'\fR) has been passed, but if multiple periodic timers become ready
+during the same loop iteration then order of execution is undefined.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_periodic_init (ev_periodic *, callback, ev_tstamp at, ev_tstamp interval, reschedule_cb)" 4
+.IX Item "ev_periodic_init (ev_periodic *, callback, ev_tstamp at, ev_tstamp interval, reschedule_cb)"
+.PD 0
+.IP "ev_periodic_set (ev_periodic *, ev_tstamp after, ev_tstamp repeat, reschedule_cb)" 4
+.IX Item "ev_periodic_set (ev_periodic *, ev_tstamp after, ev_tstamp repeat, reschedule_cb)"
+.PD
+Lots of arguments, lets sort it out... There are basically three modes of
+operation, and we will explain them from simplest to complex:
+.RS 4
+.IP "\(bu" 4
+absolute timer (at = time, interval = reschedule_cb = 0)
+.Sp
+In this configuration the watcher triggers an event at the wallclock time
+\&\f(CW\*(C`at\*(C'\fR and doesn't repeat. It will not adjust when a time jump occurs,
+that is, if it is to be run at January 1st 2011 then it will run when the
+system time reaches or surpasses this time.
+.IP "\(bu" 4
+repeating interval timer (at = offset, interval > 0, reschedule_cb = 0)
+.Sp
+In this mode the watcher will always be scheduled to time out at the next
+\&\f(CW\*(C`at + N * interval\*(C'\fR time (for some integer N, which can also be negative)
+and then repeat, regardless of any time jumps.
+.Sp
+This can be used to create timers that do not drift with respect to system
+time:
+.Sp
+.Vb 1
+\& ev_periodic_set (&periodic, 0., 3600., 0);
+.Ve
+.Sp
+This doesn't mean there will always be 3600 seconds in between triggers,
+but only that the the callback will be called when the system time shows a
+full hour (\s-1UTC\s0), or more correctly, when the system time is evenly divisible
+by 3600.
+.Sp
+Another way to think about it (for the mathematically inclined) is that
+\&\f(CW\*(C`ev_periodic\*(C'\fR will try to run the callback in this mode at the next possible
+time where \f(CW\*(C`time = at (mod interval)\*(C'\fR, regardless of any time jumps.
+.Sp
+For numerical stability it is preferable that the \f(CW\*(C`at\*(C'\fR value is near
+\&\f(CW\*(C`ev_now ()\*(C'\fR (the current time), but there is no range requirement for
+this value.
+.IP "\(bu" 4
+manual reschedule mode (at and interval ignored, reschedule_cb = callback)
+.Sp
+In this mode the values for \f(CW\*(C`interval\*(C'\fR and \f(CW\*(C`at\*(C'\fR are both being
+ignored. Instead, each time the periodic watcher gets scheduled, the
+reschedule callback will be called with the watcher as first, and the
+current time as second argument.
+.Sp
+\&\s-1NOTE:\s0 \fIThis callback \s-1MUST\s0 \s-1NOT\s0 stop or destroy any periodic watcher,
+ever, or make any event loop modifications\fR. If you need to stop it,
+return \f(CW\*(C`now + 1e30\*(C'\fR (or so, fudge fudge) and stop it afterwards (e.g. by
+starting an \f(CW\*(C`ev_prepare\*(C'\fR watcher, which is legal).
+.Sp
+Its prototype is \f(CW\*(C`ev_tstamp (*reschedule_cb)(struct ev_periodic *w,
+ev_tstamp now)\*(C'\fR, e.g.:
+.Sp
+.Vb 4
+\& static ev_tstamp my_rescheduler (struct ev_periodic *w, ev_tstamp now)
+\& {
+\& return now + 60.;
+\& }
+.Ve
+.Sp
+It must return the next time to trigger, based on the passed time value
+(that is, the lowest time value larger than to the second argument). It
+will usually be called just before the callback will be triggered, but
+might be called at other times, too.
+.Sp
+\&\s-1NOTE:\s0 \fIThis callback must always return a time that is later than the
+passed \f(CI\*(C`now\*(C'\fI value\fR. Not even \f(CW\*(C`now\*(C'\fR itself will do, it \fImust\fR be larger.
+.Sp
+This can be used to create very complex timers, such as a timer that
+triggers on each midnight, local time. To do this, you would calculate the
+next midnight after \f(CW\*(C`now\*(C'\fR and return the timestamp value for this. How
+you do this is, again, up to you (but it is not trivial, which is the main
+reason I omitted it as an example).
+.RE
+.RS 4
+.RE
+.IP "ev_periodic_again (loop, ev_periodic *)" 4
+.IX Item "ev_periodic_again (loop, ev_periodic *)"
+Simply stops and restarts the periodic watcher again. This is only useful
+when you changed some parameters or the reschedule callback would return
+a different time than the last time it was called (e.g. in a crond like
+program when the crontabs have changed).
+.IP "ev_tstamp ev_periodic_at (ev_periodic *)" 4
+.IX Item "ev_tstamp ev_periodic_at (ev_periodic *)"
+When active, returns the absolute time that the watcher is supposed to
+trigger next.
+.IP "ev_tstamp offset [read\-write]" 4
+.IX Item "ev_tstamp offset [read-write]"
+When repeating, this contains the offset value, otherwise this is the
+absolute point in time (the \f(CW\*(C`at\*(C'\fR value passed to \f(CW\*(C`ev_periodic_set\*(C'\fR).
+.Sp
+Can be modified any time, but changes only take effect when the periodic
+timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being called.
+.IP "ev_tstamp interval [read\-write]" 4
+.IX Item "ev_tstamp interval [read-write]"
+The current interval value. Can be modified any time, but changes only
+take effect when the periodic timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being
+called.
+.IP "ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now) [read\-write]" 4
+.IX Item "ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now) [read-write]"
+The current reschedule callback, or \f(CW0\fR, if this functionality is
+switched off. Can be changed any time, but changes only take effect when
+the periodic timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being called.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Call a callback every hour, or, more precisely, whenever the
+system clock is divisible by 3600. The callback invocation times have
+potentially a lot of jittering, but good long-term stability.
+.PP
+.Vb 5
+\& static void
+\& clock_cb (struct ev_loop *loop, struct ev_io *w, int revents)
+\& {
+\& ... its now a full hour (UTC, or TAI or whatever your clock follows)
+\& }
+\&
+\& struct ev_periodic hourly_tick;
+\& ev_periodic_init (&hourly_tick, clock_cb, 0., 3600., 0);
+\& ev_periodic_start (loop, &hourly_tick);
+.Ve
+.PP
+Example: The same as above, but use a reschedule callback to do it:
+.PP
+.Vb 1
+\& #include <math.h>
+\&
+\& static ev_tstamp
+\& my_scheduler_cb (struct ev_periodic *w, ev_tstamp now)
+\& {
+\& return fmod (now, 3600.) + 3600.;
+\& }
+\&
+\& ev_periodic_init (&hourly_tick, clock_cb, 0., 0., my_scheduler_cb);
+.Ve
+.PP
+Example: Call a callback every hour, starting now:
+.PP
+.Vb 4
+\& struct ev_periodic hourly_tick;
+\& ev_periodic_init (&hourly_tick, clock_cb,
+\& fmod (ev_now (loop), 3600.), 3600., 0);
+\& ev_periodic_start (loop, &hourly_tick);
+.Ve
+.ie n .Sh """ev_signal"" \- signal me when a signal gets signalled!"
+.el .Sh "\f(CWev_signal\fP \- signal me when a signal gets signalled!"
+.IX Subsection "ev_signal - signal me when a signal gets signalled!"
+Signal watchers will trigger an event when the process receives a specific
+signal one or more times. Even though signals are very asynchronous, libev
+will try it's best to deliver signals synchronously, i.e. as part of the
+normal event processing, like any other event.
+.PP
+You can configure as many watchers as you like per signal. Only when the
+first watcher gets started will libev actually register a signal watcher
+with the kernel (thus it coexists with your own signal handlers as long
+as you don't register any with libev). Similarly, when the last signal
+watcher for a signal is stopped libev will reset the signal handler to
+\&\s-1SIG_DFL\s0 (regardless of what it was set to before).
+.PP
+If possible and supported, libev will install its handlers with
+\&\f(CW\*(C`SA_RESTART\*(C'\fR behaviour enabled, so syscalls should not be unduly
+interrupted. If you have a problem with syscalls getting interrupted by
+signals you can block all signals in an \f(CW\*(C`ev_check\*(C'\fR watcher and unblock
+them in an \f(CW\*(C`ev_prepare\*(C'\fR watcher.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_signal_init (ev_signal *, callback, int signum)" 4
+.IX Item "ev_signal_init (ev_signal *, callback, int signum)"
+.PD 0
+.IP "ev_signal_set (ev_signal *, int signum)" 4
+.IX Item "ev_signal_set (ev_signal *, int signum)"
+.PD
+Configures the watcher to trigger on the given signal number (usually one
+of the \f(CW\*(C`SIGxxx\*(C'\fR constants).
+.IP "int signum [read\-only]" 4
+.IX Item "int signum [read-only]"
+The signal the watcher watches out for.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Try to exit cleanly on \s-1SIGINT\s0 and \s-1SIGTERM\s0.
+.PP
+.Vb 5
+\& static void
+\& sigint_cb (struct ev_loop *loop, struct ev_signal *w, int revents)
+\& {
+\& ev_unloop (loop, EVUNLOOP_ALL);
+\& }
+\&
+\& struct ev_signal signal_watcher;
+\& ev_signal_init (&signal_watcher, sigint_cb, SIGINT);
+\& ev_signal_start (loop, &sigint_cb);
+.Ve
+.ie n .Sh """ev_child"" \- watch out for process status changes"
+.el .Sh "\f(CWev_child\fP \- watch out for process status changes"
+.IX Subsection "ev_child - watch out for process status changes"
+Child watchers trigger when your process receives a \s-1SIGCHLD\s0 in response to
+some child status changes (most typically when a child of yours dies). It
+is permissible to install a child watcher \fIafter\fR the child has been
+forked (which implies it might have already exited), as long as the event
+loop isn't entered (or is continued from a watcher).
+.PP
+Only the default event loop is capable of handling signals, and therefore
+you can only rgeister child watchers in the default event loop.
+.PP
+\fIProcess Interaction\fR
+.IX Subsection "Process Interaction"
+.PP
+Libev grabs \f(CW\*(C`SIGCHLD\*(C'\fR as soon as the default event loop is
+initialised. This is necessary to guarantee proper behaviour even if
+the first child watcher is started after the child exits. The occurance
+of \f(CW\*(C`SIGCHLD\*(C'\fR is recorded asynchronously, but child reaping is done
+synchronously as part of the event loop processing. Libev always reaps all
+children, even ones not watched.
+.PP
+\fIOverriding the Built-In Processing\fR
+.IX Subsection "Overriding the Built-In Processing"
+.PP
+Libev offers no special support for overriding the built-in child
+processing, but if your application collides with libev's default child
+handler, you can override it easily by installing your own handler for
+\&\f(CW\*(C`SIGCHLD\*(C'\fR after initialising the default loop, and making sure the
+default loop never gets destroyed. You are encouraged, however, to use an
+event-based approach to child reaping and thus use libev's support for
+that, so other libev users can use \f(CW\*(C`ev_child\*(C'\fR watchers freely.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_child_init (ev_child *, callback, int pid, int trace)" 4
+.IX Item "ev_child_init (ev_child *, callback, int pid, int trace)"
+.PD 0
+.IP "ev_child_set (ev_child *, int pid, int trace)" 4
+.IX Item "ev_child_set (ev_child *, int pid, int trace)"
+.PD
+Configures the watcher to wait for status changes of process \f(CW\*(C`pid\*(C'\fR (or
+\&\fIany\fR process if \f(CW\*(C`pid\*(C'\fR is specified as \f(CW0\fR). The callback can look
+at the \f(CW\*(C`rstatus\*(C'\fR member of the \f(CW\*(C`ev_child\*(C'\fR watcher structure to see
+the status word (use the macros from \f(CW\*(C`sys/wait.h\*(C'\fR and see your systems
+\&\f(CW\*(C`waitpid\*(C'\fR documentation). The \f(CW\*(C`rpid\*(C'\fR member contains the pid of the
+process causing the status change. \f(CW\*(C`trace\*(C'\fR must be either \f(CW0\fR (only
+activate the watcher when the process terminates) or \f(CW1\fR (additionally
+activate the watcher when the process is stopped or continued).
+.IP "int pid [read\-only]" 4
+.IX Item "int pid [read-only]"
+The process id this watcher watches out for, or \f(CW0\fR, meaning any process id.
+.IP "int rpid [read\-write]" 4
+.IX Item "int rpid [read-write]"
+The process id that detected a status change.
+.IP "int rstatus [read\-write]" 4
+.IX Item "int rstatus [read-write]"
+The process exit/trace status caused by \f(CW\*(C`rpid\*(C'\fR (see your systems
+\&\f(CW\*(C`waitpid\*(C'\fR and \f(CW\*(C`sys/wait.h\*(C'\fR documentation for details).
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: \f(CW\*(C`fork()\*(C'\fR a new process and install a child handler to wait for
+its completion.
+.PP
+.Vb 1
+\& ev_child cw;
+\&
+\& static void
+\& child_cb (EV_P_ struct ev_child *w, int revents)
+\& {
+\& ev_child_stop (EV_A_ w);
+\& printf ("process %d exited with status %x\en", w\->rpid, w\->rstatus);
+\& }
+\&
+\& pid_t pid = fork ();
+\&
+\& if (pid < 0)
+\& // error
+\& else if (pid == 0)
+\& {
+\& // the forked child executes here
+\& exit (1);
+\& }
+\& else
+\& {
+\& ev_child_init (&cw, child_cb, pid, 0);
+\& ev_child_start (EV_DEFAULT_ &cw);
+\& }
+.Ve
+.ie n .Sh """ev_stat"" \- did the file attributes just change?"
+.el .Sh "\f(CWev_stat\fP \- did the file attributes just change?"
+.IX Subsection "ev_stat - did the file attributes just change?"
+This watches a filesystem path for attribute changes. That is, it calls
+\&\f(CW\*(C`stat\*(C'\fR regularly (or when the \s-1OS\s0 says it changed) and sees if it changed
+compared to the last time, invoking the callback if it did.
+.PP
+The path does not need to exist: changing from \*(L"path exists\*(R" to \*(L"path does
+not exist\*(R" is a status change like any other. The condition \*(L"path does
+not exist\*(R" is signified by the \f(CW\*(C`st_nlink\*(C'\fR field being zero (which is
+otherwise always forced to be at least one) and all the other fields of
+the stat buffer having unspecified contents.
+.PP
+The path \fIshould\fR be absolute and \fImust not\fR end in a slash. If it is
+relative and your working directory changes, the behaviour is undefined.
+.PP
+Since there is no standard to do this, the portable implementation simply
+calls \f(CW\*(C`stat (2)\*(C'\fR regularly on the path to see if it changed somehow. You
+can specify a recommended polling interval for this case. If you specify
+a polling interval of \f(CW0\fR (highly recommended!) then a \fIsuitable,
+unspecified default\fR value will be used (which you can expect to be around
+five seconds, although this might change dynamically). Libev will also
+impose a minimum interval which is currently around \f(CW0.1\fR, but thats
+usually overkill.
+.PP
+This watcher type is not meant for massive numbers of stat watchers,
+as even with OS-supported change notifications, this can be
+resource-intensive.
+.PP
+At the time of this writing, only the Linux inotify interface is
+implemented (implementing kqueue support is left as an exercise for the
+reader, note, however, that the author sees no way of implementing ev_stat
+semantics with kqueue). Inotify will be used to give hints only and should
+not change the semantics of \f(CW\*(C`ev_stat\*(C'\fR watchers, which means that libev
+sometimes needs to fall back to regular polling again even with inotify,
+but changes are usually detected immediately, and if the file exists there
+will be no polling.
+.PP
+\fI\s-1ABI\s0 Issues (Largefile Support)\fR
+.IX Subsection "ABI Issues (Largefile Support)"
+.PP
+Libev by default (unless the user overrides this) uses the default
+compilation environment, which means that on systems with optionally
+disabled large file support, you get the 32 bit version of the stat
+structure. When using the library from programs that change the \s-1ABI\s0 to
+use 64 bit file offsets the programs will fail. In that case you have to
+compile libev with the same flags to get binary compatibility. This is
+obviously the case with any flags that change the \s-1ABI\s0, but the problem is
+most noticably with ev_stat and largefile support.
+.PP
+\fIInotify\fR
+.IX Subsection "Inotify"
+.PP
+When \f(CW\*(C`inotify (7)\*(C'\fR support has been compiled into libev (generally only
+available on Linux) and present at runtime, it will be used to speed up
+change detection where possible. The inotify descriptor will be created lazily
+when the first \f(CW\*(C`ev_stat\*(C'\fR watcher is being started.
+.PP
+Inotify presence does not change the semantics of \f(CW\*(C`ev_stat\*(C'\fR watchers
+except that changes might be detected earlier, and in some cases, to avoid
+making regular \f(CW\*(C`stat\*(C'\fR calls. Even in the presence of inotify support
+there are many cases where libev has to resort to regular \f(CW\*(C`stat\*(C'\fR polling.
+.PP
+(There is no support for kqueue, as apparently it cannot be used to
+implement this functionality, due to the requirement of having a file
+descriptor open on the object at all times).
+.PP
+\fIThe special problem of stat time resolution\fR
+.IX Subsection "The special problem of stat time resolution"
+.PP
+The \f(CW\*(C`stat ()\*(C'\fR syscall only supports full-second resolution portably, and
+even on systems where the resolution is higher, many filesystems still
+only support whole seconds.
+.PP
+That means that, if the time is the only thing that changes, you can
+easily miss updates: on the first update, \f(CW\*(C`ev_stat\*(C'\fR detects a change and
+calls your callback, which does something. When there is another update
+within the same second, \f(CW\*(C`ev_stat\*(C'\fR will be unable to detect it as the stat
+data does not change.
+.PP
+The solution to this is to delay acting on a change for slightly more
+than second (or till slightly after the next full second boundary), using
+a roughly one-second-delay \f(CW\*(C`ev_timer\*(C'\fR (e.g. \f(CW\*(C`ev_timer_set (w, 0., 1.02);
+ev_timer_again (loop, w)\*(C'\fR).
+.PP
+The \f(CW.02\fR offset is added to work around small timing inconsistencies
+of some operating systems (where the second counter of the current time
+might be be delayed. One such system is the Linux kernel, where a call to
+\&\f(CW\*(C`gettimeofday\*(C'\fR might return a timestamp with a full second later than
+a subsequent \f(CW\*(C`time\*(C'\fR call \- if the equivalent of \f(CW\*(C`time ()\*(C'\fR is used to
+update file times then there will be a small window where the kernel uses
+the previous second to update file times but libev might already execute
+the timer callback).
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_stat_init (ev_stat *, callback, const char *path, ev_tstamp interval)" 4
+.IX Item "ev_stat_init (ev_stat *, callback, const char *path, ev_tstamp interval)"
+.PD 0
+.IP "ev_stat_set (ev_stat *, const char *path, ev_tstamp interval)" 4
+.IX Item "ev_stat_set (ev_stat *, const char *path, ev_tstamp interval)"
+.PD
+Configures the watcher to wait for status changes of the given
+\&\f(CW\*(C`path\*(C'\fR. The \f(CW\*(C`interval\*(C'\fR is a hint on how quickly a change is expected to
+be detected and should normally be specified as \f(CW0\fR to let libev choose
+a suitable value. The memory pointed to by \f(CW\*(C`path\*(C'\fR must point to the same
+path for as long as the watcher is active.
+.Sp
+The callback will receive \f(CW\*(C`EV_STAT\*(C'\fR when a change was detected, relative
+to the attributes at the time the watcher was started (or the last change
+was detected).
+.IP "ev_stat_stat (loop, ev_stat *)" 4
+.IX Item "ev_stat_stat (loop, ev_stat *)"
+Updates the stat buffer immediately with new values. If you change the
+watched path in your callback, you could call this function to avoid
+detecting this change (while introducing a race condition if you are not
+the only one changing the path). Can also be useful simply to find out the
+new values.
+.IP "ev_statdata attr [read\-only]" 4
+.IX Item "ev_statdata attr [read-only]"
+The most-recently detected attributes of the file. Although the type is
+\&\f(CW\*(C`ev_statdata\*(C'\fR, this is usually the (or one of the) \f(CW\*(C`struct stat\*(C'\fR types
+suitable for your system, but you can only rely on the POSIX-standardised
+members to be present. If the \f(CW\*(C`st_nlink\*(C'\fR member is \f(CW0\fR, then there was
+some error while \f(CW\*(C`stat\*(C'\fRing the file.
+.IP "ev_statdata prev [read\-only]" 4
+.IX Item "ev_statdata prev [read-only]"
+The previous attributes of the file. The callback gets invoked whenever
+\&\f(CW\*(C`prev\*(C'\fR != \f(CW\*(C`attr\*(C'\fR, or, more precisely, one or more of these members
+differ: \f(CW\*(C`st_dev\*(C'\fR, \f(CW\*(C`st_ino\*(C'\fR, \f(CW\*(C`st_mode\*(C'\fR, \f(CW\*(C`st_nlink\*(C'\fR, \f(CW\*(C`st_uid\*(C'\fR,
+\&\f(CW\*(C`st_gid\*(C'\fR, \f(CW\*(C`st_rdev\*(C'\fR, \f(CW\*(C`st_size\*(C'\fR, \f(CW\*(C`st_atime\*(C'\fR, \f(CW\*(C`st_mtime\*(C'\fR, \f(CW\*(C`st_ctime\*(C'\fR.
+.IP "ev_tstamp interval [read\-only]" 4
+.IX Item "ev_tstamp interval [read-only]"
+The specified interval.
+.IP "const char *path [read\-only]" 4
+.IX Item "const char *path [read-only]"
+The filesystem path that is being watched.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Watch \f(CW\*(C`/etc/passwd\*(C'\fR for attribute changes.
+.PP
+.Vb 10
+\& static void
+\& passwd_cb (struct ev_loop *loop, ev_stat *w, int revents)
+\& {
+\& /* /etc/passwd changed in some way */
+\& if (w\->attr.st_nlink)
+\& {
+\& printf ("passwd current size %ld\en", (long)w\->attr.st_size);
+\& printf ("passwd current atime %ld\en", (long)w\->attr.st_mtime);
+\& printf ("passwd current mtime %ld\en", (long)w\->attr.st_mtime);
+\& }
+\& else
+\& /* you shalt not abuse printf for puts */
+\& puts ("wow, /etc/passwd is not there, expect problems. "
+\& "if this is windows, they already arrived\en");
+\& }
+\&
+\& ...
+\& ev_stat passwd;
+\&
+\& ev_stat_init (&passwd, passwd_cb, "/etc/passwd", 0.);
+\& ev_stat_start (loop, &passwd);
+.Ve
+.PP
+Example: Like above, but additionally use a one-second delay so we do not
+miss updates (however, frequent updates will delay processing, too, so
+one might do the work both on \f(CW\*(C`ev_stat\*(C'\fR callback invocation \fIand\fR on
+\&\f(CW\*(C`ev_timer\*(C'\fR callback invocation).
+.PP
+.Vb 2
+\& static ev_stat passwd;
+\& static ev_timer timer;
+\&
+\& static void
+\& timer_cb (EV_P_ ev_timer *w, int revents)
+\& {
+\& ev_timer_stop (EV_A_ w);
+\&
+\& /* now it\*(Aqs one second after the most recent passwd change */
+\& }
+\&
+\& static void
+\& stat_cb (EV_P_ ev_stat *w, int revents)
+\& {
+\& /* reset the one\-second timer */
+\& ev_timer_again (EV_A_ &timer);
+\& }
+\&
+\& ...
+\& ev_stat_init (&passwd, stat_cb, "/etc/passwd", 0.);
+\& ev_stat_start (loop, &passwd);
+\& ev_timer_init (&timer, timer_cb, 0., 1.02);
+.Ve
+.ie n .Sh """ev_idle"" \- when you've got nothing better to do..."
+.el .Sh "\f(CWev_idle\fP \- when you've got nothing better to do..."
+.IX Subsection "ev_idle - when you've got nothing better to do..."
+Idle watchers trigger events when no other events of the same or higher
+priority are pending (prepare, check and other idle watchers do not
+count).
+.PP
+That is, as long as your process is busy handling sockets or timeouts
+(or even signals, imagine) of the same or higher priority it will not be
+triggered. But when your process is idle (or only lower-priority watchers
+are pending), the idle watchers are being called once per event loop
+iteration \- until stopped, that is, or your process receives more events
+and becomes busy again with higher priority stuff.
+.PP
+The most noteworthy effect is that as long as any idle watchers are
+active, the process will not block when waiting for new events.
+.PP
+Apart from keeping your process non-blocking (which is a useful
+effect on its own sometimes), idle watchers are a good place to do
+\&\*(L"pseudo-background processing\*(R", or delay processing stuff to after the
+event loop has handled all outstanding events.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_idle_init (ev_signal *, callback)" 4
+.IX Item "ev_idle_init (ev_signal *, callback)"
+Initialises and configures the idle watcher \- it has no parameters of any
+kind. There is a \f(CW\*(C`ev_idle_set\*(C'\fR macro, but using it is utterly pointless,
+believe me.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Dynamically allocate an \f(CW\*(C`ev_idle\*(C'\fR watcher, start it, and in the
+callback, free it. Also, use no error checking, as usual.
+.PP
+.Vb 7
+\& static void
+\& idle_cb (struct ev_loop *loop, struct ev_idle *w, int revents)
+\& {
+\& free (w);
+\& // now do something you wanted to do when the program has
+\& // no longer anything immediate to do.
+\& }
+\&
+\& struct ev_idle *idle_watcher = malloc (sizeof (struct ev_idle));
+\& ev_idle_init (idle_watcher, idle_cb);
+\& ev_idle_start (loop, idle_cb);
+.Ve
+.ie n .Sh """ev_prepare""\fP and \f(CW""ev_check"" \- customise your event loop!"
+.el .Sh "\f(CWev_prepare\fP and \f(CWev_check\fP \- customise your event loop!"
+.IX Subsection "ev_prepare and ev_check - customise your event loop!"
+Prepare and check watchers are usually (but not always) used in tandem:
+prepare watchers get invoked before the process blocks and check watchers
+afterwards.
+.PP
+You \fImust not\fR call \f(CW\*(C`ev_loop\*(C'\fR or similar functions that enter
+the current event loop from either \f(CW\*(C`ev_prepare\*(C'\fR or \f(CW\*(C`ev_check\*(C'\fR
+watchers. Other loops than the current one are fine, however. The
+rationale behind this is that you do not need to check for recursion in
+those watchers, i.e. the sequence will always be \f(CW\*(C`ev_prepare\*(C'\fR, blocking,
+\&\f(CW\*(C`ev_check\*(C'\fR so if you have one watcher of each kind they will always be
+called in pairs bracketing the blocking call.
+.PP
+Their main purpose is to integrate other event mechanisms into libev and
+their use is somewhat advanced. This could be used, for example, to track
+variable changes, implement your own watchers, integrate net-snmp or a
+coroutine library and lots more. They are also occasionally useful if
+you cache some data and want to flush it before blocking (for example,
+in X programs you might want to do an \f(CW\*(C`XFlush ()\*(C'\fR in an \f(CW\*(C`ev_prepare\*(C'\fR
+watcher).
+.PP
+This is done by examining in each prepare call which file descriptors need
+to be watched by the other library, registering \f(CW\*(C`ev_io\*(C'\fR watchers for
+them and starting an \f(CW\*(C`ev_timer\*(C'\fR watcher for any timeouts (many libraries
+provide just this functionality). Then, in the check watcher you check for
+any events that occured (by checking the pending status of all watchers
+and stopping them) and call back into the library. The I/O and timer
+callbacks will never actually be called (but must be valid nevertheless,
+because you never know, you know?).
+.PP
+As another example, the Perl Coro module uses these hooks to integrate
+coroutines into libev programs, by yielding to other active coroutines
+during each prepare and only letting the process block if no coroutines
+are ready to run (it's actually more complicated: it only runs coroutines
+with priority higher than or equal to the event loop and one coroutine
+of lower priority, but only once, using idle watchers to keep the event
+loop from blocking if lower-priority coroutines are active, thus mapping
+low-priority coroutines to idle/background tasks).
+.PP
+It is recommended to give \f(CW\*(C`ev_check\*(C'\fR watchers highest (\f(CW\*(C`EV_MAXPRI\*(C'\fR)
+priority, to ensure that they are being run before any other watchers
+after the poll. Also, \f(CW\*(C`ev_check\*(C'\fR watchers (and \f(CW\*(C`ev_prepare\*(C'\fR watchers,
+too) should not activate (\*(L"feed\*(R") events into libev. While libev fully
+supports this, they might get executed before other \f(CW\*(C`ev_check\*(C'\fR watchers
+did their job. As \f(CW\*(C`ev_check\*(C'\fR watchers are often used to embed other
+(non-libev) event loops those other event loops might be in an unusable
+state until their \f(CW\*(C`ev_check\*(C'\fR watcher ran (always remind yourself to
+coexist peacefully with others).
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_prepare_init (ev_prepare *, callback)" 4
+.IX Item "ev_prepare_init (ev_prepare *, callback)"
+.PD 0
+.IP "ev_check_init (ev_check *, callback)" 4
+.IX Item "ev_check_init (ev_check *, callback)"
+.PD
+Initialises and configures the prepare or check watcher \- they have no
+parameters of any kind. There are \f(CW\*(C`ev_prepare_set\*(C'\fR and \f(CW\*(C`ev_check_set\*(C'\fR
+macros, but using them is utterly, utterly and completely pointless.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+There are a number of principal ways to embed other event loops or modules
+into libev. Here are some ideas on how to include libadns into libev
+(there is a Perl module named \f(CW\*(C`EV::ADNS\*(C'\fR that does this, which you could
+use as a working example. Another Perl module named \f(CW\*(C`EV::Glib\*(C'\fR embeds a
+Glib main context into libev, and finally, \f(CW\*(C`Glib::EV\*(C'\fR embeds \s-1EV\s0 into the
+Glib event loop).
+.PP
+Method 1: Add \s-1IO\s0 watchers and a timeout watcher in a prepare handler,
+and in a check watcher, destroy them and call into libadns. What follows
+is pseudo-code only of course. This requires you to either use a low
+priority for the check watcher or use \f(CW\*(C`ev_clear_pending\*(C'\fR explicitly, as
+the callbacks for the IO/timeout watchers might not have been called yet.
+.PP
+.Vb 2
+\& static ev_io iow [nfd];
+\& static ev_timer tw;
+\&
+\& static void
+\& io_cb (ev_loop *loop, ev_io *w, int revents)
+\& {
+\& }
+\&
+\& // create io watchers for each fd and a timer before blocking
+\& static void
+\& adns_prepare_cb (ev_loop *loop, ev_prepare *w, int revents)
+\& {
+\& int timeout = 3600000;
+\& struct pollfd fds [nfd];
+\& // actual code will need to loop here and realloc etc.
+\& adns_beforepoll (ads, fds, &nfd, &timeout, timeval_from (ev_time ()));
+\&
+\& /* the callback is illegal, but won\*(Aqt be called as we stop during check */
+\& ev_timer_init (&tw, 0, timeout * 1e\-3);
+\& ev_timer_start (loop, &tw);
+\&
+\& // create one ev_io per pollfd
+\& for (int i = 0; i < nfd; ++i)
+\& {
+\& ev_io_init (iow + i, io_cb, fds [i].fd,
+\& ((fds [i].events & POLLIN ? EV_READ : 0)
+\& | (fds [i].events & POLLOUT ? EV_WRITE : 0)));
+\&
+\& fds [i].revents = 0;
+\& ev_io_start (loop, iow + i);
+\& }
+\& }
+\&
+\& // stop all watchers after blocking
+\& static void
+\& adns_check_cb (ev_loop *loop, ev_check *w, int revents)
+\& {
+\& ev_timer_stop (loop, &tw);
+\&
+\& for (int i = 0; i < nfd; ++i)
+\& {
+\& // set the relevant poll flags
+\& // could also call adns_processreadable etc. here
+\& struct pollfd *fd = fds + i;
+\& int revents = ev_clear_pending (iow + i);
+\& if (revents & EV_READ ) fd\->revents |= fd\->events & POLLIN;
+\& if (revents & EV_WRITE) fd\->revents |= fd\->events & POLLOUT;
+\&
+\& // now stop the watcher
+\& ev_io_stop (loop, iow + i);
+\& }
+\&
+\& adns_afterpoll (adns, fds, nfd, timeval_from (ev_now (loop));
+\& }
+.Ve
+.PP
+Method 2: This would be just like method 1, but you run \f(CW\*(C`adns_afterpoll\*(C'\fR
+in the prepare watcher and would dispose of the check watcher.
+.PP
+Method 3: If the module to be embedded supports explicit event
+notification (adns does), you can also make use of the actual watcher
+callbacks, and only destroy/create the watchers in the prepare watcher.
+.PP
+.Vb 5
+\& static void
+\& timer_cb (EV_P_ ev_timer *w, int revents)
+\& {
+\& adns_state ads = (adns_state)w\->data;
+\& update_now (EV_A);
+\&
+\& adns_processtimeouts (ads, &tv_now);
+\& }
+\&
+\& static void
+\& io_cb (EV_P_ ev_io *w, int revents)
+\& {
+\& adns_state ads = (adns_state)w\->data;
+\& update_now (EV_A);
+\&
+\& if (revents & EV_READ ) adns_processreadable (ads, w\->fd, &tv_now);
+\& if (revents & EV_WRITE) adns_processwriteable (ads, w\->fd, &tv_now);
+\& }
+\&
+\& // do not ever call adns_afterpoll
+.Ve
+.PP
+Method 4: Do not use a prepare or check watcher because the module you
+want to embed is too inflexible to support it. Instead, youc na override
+their poll function. The drawback with this solution is that the main
+loop is now no longer controllable by \s-1EV\s0. The \f(CW\*(C`Glib::EV\*(C'\fR module does
+this.
+.PP
+.Vb 4
+\& static gint
+\& event_poll_func (GPollFD *fds, guint nfds, gint timeout)
+\& {
+\& int got_events = 0;
+\&
+\& for (n = 0; n < nfds; ++n)
+\& // create/start io watcher that sets the relevant bits in fds[n] and increment got_events
+\&
+\& if (timeout >= 0)
+\& // create/start timer
+\&
+\& // poll
+\& ev_loop (EV_A_ 0);
+\&
+\& // stop timer again
+\& if (timeout >= 0)
+\& ev_timer_stop (EV_A_ &to);
+\&
+\& // stop io watchers again \- their callbacks should have set
+\& for (n = 0; n < nfds; ++n)
+\& ev_io_stop (EV_A_ iow [n]);
+\&
+\& return got_events;
+\& }
+.Ve
+.ie n .Sh """ev_embed"" \- when one backend isn't enough..."
+.el .Sh "\f(CWev_embed\fP \- when one backend isn't enough..."
+.IX Subsection "ev_embed - when one backend isn't enough..."
+This is a rather advanced watcher type that lets you embed one event loop
+into another (currently only \f(CW\*(C`ev_io\*(C'\fR events are supported in the embedded
+loop, other types of watchers might be handled in a delayed or incorrect
+fashion and must not be used).
+.PP
+There are primarily two reasons you would want that: work around bugs and
+prioritise I/O.
+.PP
+As an example for a bug workaround, the kqueue backend might only support
+sockets on some platform, so it is unusable as generic backend, but you
+still want to make use of it because you have many sockets and it scales
+so nicely. In this case, you would create a kqueue-based loop and embed it
+into your default loop (which might use e.g. poll). Overall operation will
+be a bit slower because first libev has to poll and then call kevent, but
+at least you can use both at what they are best.
+.PP
+As for prioritising I/O: rarely you have the case where some fds have
+to be watched and handled very quickly (with low latency), and even
+priorities and idle watchers might have too much overhead. In this case
+you would put all the high priority stuff in one loop and all the rest in
+a second one, and embed the second one in the first.
+.PP
+As long as the watcher is active, the callback will be invoked every time
+there might be events pending in the embedded loop. The callback must then
+call \f(CW\*(C`ev_embed_sweep (mainloop, watcher)\*(C'\fR to make a single sweep and invoke
+their callbacks (you could also start an idle watcher to give the embedded
+loop strictly lower priority for example). You can also set the callback
+to \f(CW0\fR, in which case the embed watcher will automatically execute the
+embedded loop sweep.
+.PP
+As long as the watcher is started it will automatically handle events. The
+callback will be invoked whenever some events have been handled. You can
+set the callback to \f(CW0\fR to avoid having to specify one if you are not
+interested in that.
+.PP
+Also, there have not currently been made special provisions for forking:
+when you fork, you not only have to call \f(CW\*(C`ev_loop_fork\*(C'\fR on both loops,
+but you will also have to stop and restart any \f(CW\*(C`ev_embed\*(C'\fR watchers
+yourself.
+.PP
+Unfortunately, not all backends are embeddable, only the ones returned by
+\&\f(CW\*(C`ev_embeddable_backends\*(C'\fR are, which, unfortunately, does not include any
+portable one.
+.PP
+So when you want to use this feature you will always have to be prepared
+that you cannot get an embeddable loop. The recommended way to get around
+this is to have a separate variables for your embeddable loop, try to
+create it, and if that fails, use the normal loop for everything.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_embed_init (ev_embed *, callback, struct ev_loop *embedded_loop)" 4
+.IX Item "ev_embed_init (ev_embed *, callback, struct ev_loop *embedded_loop)"
+.PD 0
+.IP "ev_embed_set (ev_embed *, callback, struct ev_loop *embedded_loop)" 4
+.IX Item "ev_embed_set (ev_embed *, callback, struct ev_loop *embedded_loop)"
+.PD
+Configures the watcher to embed the given loop, which must be
+embeddable. If the callback is \f(CW0\fR, then \f(CW\*(C`ev_embed_sweep\*(C'\fR will be
+invoked automatically, otherwise it is the responsibility of the callback
+to invoke it (it will continue to be called until the sweep has been done,
+if you do not want thta, you need to temporarily stop the embed watcher).
+.IP "ev_embed_sweep (loop, ev_embed *)" 4
+.IX Item "ev_embed_sweep (loop, ev_embed *)"
+Make a single, non-blocking sweep over the embedded loop. This works
+similarly to \f(CW\*(C`ev_loop (embedded_loop, EVLOOP_NONBLOCK)\*(C'\fR, but in the most
+apropriate way for embedded loops.
+.IP "struct ev_loop *other [read\-only]" 4
+.IX Item "struct ev_loop *other [read-only]"
+The embedded event loop.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Try to get an embeddable event loop and embed it into the default
+event loop. If that is not possible, use the default loop. The default
+loop is stored in \f(CW\*(C`loop_hi\*(C'\fR, while the mebeddable loop is stored in
+\&\f(CW\*(C`loop_lo\*(C'\fR (which is \f(CW\*(C`loop_hi\*(C'\fR in the acse no embeddable loop can be
+used).
+.PP
+.Vb 3
+\& struct ev_loop *loop_hi = ev_default_init (0);
+\& struct ev_loop *loop_lo = 0;
+\& struct ev_embed embed;
+\&
+\& // see if there is a chance of getting one that works
+\& // (remember that a flags value of 0 means autodetection)
+\& loop_lo = ev_embeddable_backends () & ev_recommended_backends ()
+\& ? ev_loop_new (ev_embeddable_backends () & ev_recommended_backends ())
+\& : 0;
+\&
+\& // if we got one, then embed it, otherwise default to loop_hi
+\& if (loop_lo)
+\& {
+\& ev_embed_init (&embed, 0, loop_lo);
+\& ev_embed_start (loop_hi, &embed);
+\& }
+\& else
+\& loop_lo = loop_hi;
+.Ve
+.PP
+Example: Check if kqueue is available but not recommended and create
+a kqueue backend for use with sockets (which usually work with any
+kqueue implementation). Store the kqueue/socket\-only event loop in
+\&\f(CW\*(C`loop_socket\*(C'\fR. (One might optionally use \f(CW\*(C`EVFLAG_NOENV\*(C'\fR, too).
+.PP
+.Vb 3
+\& struct ev_loop *loop = ev_default_init (0);
+\& struct ev_loop *loop_socket = 0;
+\& struct ev_embed embed;
+\&
+\& if (ev_supported_backends () & ~ev_recommended_backends () & EVBACKEND_KQUEUE)
+\& if ((loop_socket = ev_loop_new (EVBACKEND_KQUEUE))
+\& {
+\& ev_embed_init (&embed, 0, loop_socket);
+\& ev_embed_start (loop, &embed);
+\& }
+\&
+\& if (!loop_socket)
+\& loop_socket = loop;
+\&
+\& // now use loop_socket for all sockets, and loop for everything else
+.Ve
+.ie n .Sh """ev_fork"" \- the audacity to resume the event loop after a fork"
+.el .Sh "\f(CWev_fork\fP \- the audacity to resume the event loop after a fork"
+.IX Subsection "ev_fork - the audacity to resume the event loop after a fork"
+Fork watchers are called when a \f(CW\*(C`fork ()\*(C'\fR was detected (usually because
+whoever is a good citizen cared to tell libev about it by calling
+\&\f(CW\*(C`ev_default_fork\*(C'\fR or \f(CW\*(C`ev_loop_fork\*(C'\fR). The invocation is done before the
+event loop blocks next and before \f(CW\*(C`ev_check\*(C'\fR watchers are being called,
+and only in the child after the fork. If whoever good citizen calling
+\&\f(CW\*(C`ev_default_fork\*(C'\fR cheats and calls it in the wrong process, the fork
+handlers will be invoked, too, of course.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_fork_init (ev_signal *, callback)" 4
+.IX Item "ev_fork_init (ev_signal *, callback)"
+Initialises and configures the fork watcher \- it has no parameters of any
+kind. There is a \f(CW\*(C`ev_fork_set\*(C'\fR macro, but using it is utterly pointless,
+believe me.
+.ie n .Sh """ev_async"" \- how to wake up another event loop"
+.el .Sh "\f(CWev_async\fP \- how to wake up another event loop"
+.IX Subsection "ev_async - how to wake up another event loop"
+In general, you cannot use an \f(CW\*(C`ev_loop\*(C'\fR from multiple threads or other
+asynchronous sources such as signal handlers (as opposed to multiple event
+loops \- those are of course safe to use in different threads).
+.PP
+Sometimes, however, you need to wake up another event loop you do not
+control, for example because it belongs to another thread. This is what
+\&\f(CW\*(C`ev_async\*(C'\fR watchers do: as long as the \f(CW\*(C`ev_async\*(C'\fR watcher is active, you
+can signal it by calling \f(CW\*(C`ev_async_send\*(C'\fR, which is thread\- and signal
+safe.
+.PP
+This functionality is very similar to \f(CW\*(C`ev_signal\*(C'\fR watchers, as signals,
+too, are asynchronous in nature, and signals, too, will be compressed
+(i.e. the number of callback invocations may be less than the number of
+\&\f(CW\*(C`ev_async_sent\*(C'\fR calls).
+.PP
+Unlike \f(CW\*(C`ev_signal\*(C'\fR watchers, \f(CW\*(C`ev_async\*(C'\fR works with any event loop, not
+just the default loop.
+.PP
+\fIQueueing\fR
+.IX Subsection "Queueing"
+.PP
+\&\f(CW\*(C`ev_async\*(C'\fR does not support queueing of data in any way. The reason
+is that the author does not know of a simple (or any) algorithm for a
+multiple-writer-single-reader queue that works in all cases and doesn't
+need elaborate support such as pthreads.
+.PP
+That means that if you want to queue data, you have to provide your own
+queue. But at least I can tell you would implement locking around your
+queue:
+.IP "queueing from a signal handler context" 4
+.IX Item "queueing from a signal handler context"
+To implement race-free queueing, you simply add to the queue in the signal
+handler but you block the signal handler in the watcher callback. Here is an example that does that for
+some fictitiuous \s-1SIGUSR1\s0 handler:
+.Sp
+.Vb 1
+\& static ev_async mysig;
+\&
+\& static void
+\& sigusr1_handler (void)
+\& {
+\& sometype data;
+\&
+\& // no locking etc.
+\& queue_put (data);
+\& ev_async_send (EV_DEFAULT_ &mysig);
+\& }
+\&
+\& static void
+\& mysig_cb (EV_P_ ev_async *w, int revents)
+\& {
+\& sometype data;
+\& sigset_t block, prev;
+\&
+\& sigemptyset (&block);
+\& sigaddset (&block, SIGUSR1);
+\& sigprocmask (SIG_BLOCK, &block, &prev);
+\&
+\& while (queue_get (&data))
+\& process (data);
+\&
+\& if (sigismember (&prev, SIGUSR1)
+\& sigprocmask (SIG_UNBLOCK, &block, 0);
+\& }
+.Ve
+.Sp
+(Note: pthreads in theory requires you to use \f(CW\*(C`pthread_setmask\*(C'\fR
+instead of \f(CW\*(C`sigprocmask\*(C'\fR when you use threads, but libev doesn't do it
+either...).
+.IP "queueing from a thread context" 4
+.IX Item "queueing from a thread context"
+The strategy for threads is different, as you cannot (easily) block
+threads but you can easily preempt them, so to queue safely you need to
+employ a traditional mutex lock, such as in this pthread example:
+.Sp
+.Vb 2
+\& static ev_async mysig;
+\& static pthread_mutex_t mymutex = PTHREAD_MUTEX_INITIALIZER;
+\&
+\& static void
+\& otherthread (void)
+\& {
+\& // only need to lock the actual queueing operation
+\& pthread_mutex_lock (&mymutex);
+\& queue_put (data);
+\& pthread_mutex_unlock (&mymutex);
+\&
+\& ev_async_send (EV_DEFAULT_ &mysig);
+\& }
+\&
+\& static void
+\& mysig_cb (EV_P_ ev_async *w, int revents)
+\& {
+\& pthread_mutex_lock (&mymutex);
+\&
+\& while (queue_get (&data))
+\& process (data);
+\&
+\& pthread_mutex_unlock (&mymutex);
+\& }
+.Ve
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_async_init (ev_async *, callback)" 4
+.IX Item "ev_async_init (ev_async *, callback)"
+Initialises and configures the async watcher \- it has no parameters of any
+kind. There is a \f(CW\*(C`ev_asynd_set\*(C'\fR macro, but using it is utterly pointless,
+believe me.
+.IP "ev_async_send (loop, ev_async *)" 4
+.IX Item "ev_async_send (loop, ev_async *)"
+Sends/signals/activates the given \f(CW\*(C`ev_async\*(C'\fR watcher, that is, feeds
+an \f(CW\*(C`EV_ASYNC\*(C'\fR event on the watcher into the event loop. Unlike
+\&\f(CW\*(C`ev_feed_event\*(C'\fR, this call is safe to do in other threads, signal or
+similar contexts (see the dicusssion of \f(CW\*(C`EV_ATOMIC_T\*(C'\fR in the embedding
+section below on what exactly this means).
+.Sp
+This call incurs the overhead of a syscall only once per loop iteration,
+so while the overhead might be noticable, it doesn't apply to repeated
+calls to \f(CW\*(C`ev_async_send\*(C'\fR.
+.IP "bool = ev_async_pending (ev_async *)" 4
+.IX Item "bool = ev_async_pending (ev_async *)"
+Returns a non-zero value when \f(CW\*(C`ev_async_send\*(C'\fR has been called on the
+watcher but the event has not yet been processed (or even noted) by the
+event loop.
+.Sp
+\&\f(CW\*(C`ev_async_send\*(C'\fR sets a flag in the watcher and wakes up the loop. When
+the loop iterates next and checks for the watcher to have become active,
+it will reset the flag again. \f(CW\*(C`ev_async_pending\*(C'\fR can be used to very
+quickly check wether invoking the loop might be a good idea.
+.Sp
+Not that this does \fInot\fR check wether the watcher itself is pending, only
+wether it has been requested to make this watcher pending.
+.SH "OTHER FUNCTIONS"
+.IX Header "OTHER FUNCTIONS"
+There are some other functions of possible interest. Described. Here. Now.
+.IP "ev_once (loop, int fd, int events, ev_tstamp timeout, callback)" 4
+.IX Item "ev_once (loop, int fd, int events, ev_tstamp timeout, callback)"
+This function combines a simple timer and an I/O watcher, calls your
+callback on whichever event happens first and automatically stop both
+watchers. This is useful if you want to wait for a single event on an fd
+or timeout without having to allocate/configure/start/stop/free one or
+more watchers yourself.
+.Sp
+If \f(CW\*(C`fd\*(C'\fR is less than 0, then no I/O watcher will be started and events
+is being ignored. Otherwise, an \f(CW\*(C`ev_io\*(C'\fR watcher for the given \f(CW\*(C`fd\*(C'\fR and
+\&\f(CW\*(C`events\*(C'\fR set will be craeted and started.
+.Sp
+If \f(CW\*(C`timeout\*(C'\fR is less than 0, then no timeout watcher will be
+started. Otherwise an \f(CW\*(C`ev_timer\*(C'\fR watcher with after = \f(CW\*(C`timeout\*(C'\fR (and
+repeat = 0) will be started. While \f(CW0\fR is a valid timeout, it is of
+dubious value.
+.Sp
+The callback has the type \f(CW\*(C`void (*cb)(int revents, void *arg)\*(C'\fR and gets
+passed an \f(CW\*(C`revents\*(C'\fR set like normal event callbacks (a combination of
+\&\f(CW\*(C`EV_ERROR\*(C'\fR, \f(CW\*(C`EV_READ\*(C'\fR, \f(CW\*(C`EV_WRITE\*(C'\fR or \f(CW\*(C`EV_TIMEOUT\*(C'\fR) and the \f(CW\*(C`arg\*(C'\fR
+value passed to \f(CW\*(C`ev_once\*(C'\fR:
+.Sp
+.Vb 7
+\& static void stdin_ready (int revents, void *arg)
+\& {
+\& if (revents & EV_TIMEOUT)
+\& /* doh, nothing entered */;
+\& else if (revents & EV_READ)
+\& /* stdin might have data for us, joy! */;
+\& }
+\&
+\& ev_once (STDIN_FILENO, EV_READ, 10., stdin_ready, 0);
+.Ve
+.IP "ev_feed_event (ev_loop *, watcher *, int revents)" 4
+.IX Item "ev_feed_event (ev_loop *, watcher *, int revents)"
+Feeds the given event set into the event loop, as if the specified event
+had happened for the specified watcher (which must be a pointer to an
+initialised but not necessarily started event watcher).
+.IP "ev_feed_fd_event (ev_loop *, int fd, int revents)" 4
+.IX Item "ev_feed_fd_event (ev_loop *, int fd, int revents)"
+Feed an event on the given fd, as if a file descriptor backend detected
+the given events it.
+.IP "ev_feed_signal_event (ev_loop *loop, int signum)" 4
+.IX Item "ev_feed_signal_event (ev_loop *loop, int signum)"
+Feed an event as if the given signal occured (\f(CW\*(C`loop\*(C'\fR must be the default
+loop!).
+.SH "LIBEVENT EMULATION"
+.IX Header "LIBEVENT EMULATION"
+Libev offers a compatibility emulation layer for libevent. It cannot
+emulate the internals of libevent, so here are some usage hints:
+.IP "\(bu" 4
+Use it by including <event.h>, as usual.
+.IP "\(bu" 4
+The following members are fully supported: ev_base, ev_callback,
+ev_arg, ev_fd, ev_res, ev_events.
+.IP "\(bu" 4
+Avoid using ev_flags and the EVLIST_*\-macros, while it is
+maintained by libev, it does not work exactly the same way as in libevent (consider
+it a private \s-1API\s0).
+.IP "\(bu" 4
+Priorities are not currently supported. Initialising priorities
+will fail and all watchers will have the same priority, even though there
+is an ev_pri field.
+.IP "\(bu" 4
+In libevent, the last base created gets the signals, in libev, the
+first base created (== the default loop) gets the signals.
+.IP "\(bu" 4
+Other members are not supported.
+.IP "\(bu" 4
+The libev emulation is \fInot\fR \s-1ABI\s0 compatible to libevent, you need
+to use the libev header file and library.
+.SH "\*(C+ SUPPORT"
+.IX Header " SUPPORT"
+Libev comes with some simplistic wrapper classes for \*(C+ that mainly allow
+you to use some convinience methods to start/stop watchers and also change
+the callback model to a model using method callbacks on objects.
+.PP
+To use it,
+.PP
+.Vb 1
+\& #include <ev++.h>
+.Ve
+.PP
+This automatically includes \fIev.h\fR and puts all of its definitions (many
+of them macros) into the global namespace. All \*(C+ specific things are
+put into the \f(CW\*(C`ev\*(C'\fR namespace. It should support all the same embedding
+options as \fIev.h\fR, most notably \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR.
+.PP
+Care has been taken to keep the overhead low. The only data member the \*(C+
+classes add (compared to plain C\-style watchers) is the event loop pointer
+that the watcher is associated with (or no additional members at all if
+you disable \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR when embedding libev).
+.PP
+Currently, functions, and static and non-static member functions can be
+used as callbacks. Other types should be easy to add as long as they only
+need one additional pointer for context. If you need support for other
+types of functors please contact the author (preferably after implementing
+it).
+.PP
+Here is a list of things available in the \f(CW\*(C`ev\*(C'\fR namespace:
+.ie n .IP """ev::READ""\fR, \f(CW""ev::WRITE"" etc." 4
+.el .IP "\f(CWev::READ\fR, \f(CWev::WRITE\fR etc." 4
+.IX Item "ev::READ, ev::WRITE etc."
+These are just enum values with the same values as the \f(CW\*(C`EV_READ\*(C'\fR etc.
+macros from \fIev.h\fR.
+.ie n .IP """ev::tstamp""\fR, \f(CW""ev::now""" 4
+.el .IP "\f(CWev::tstamp\fR, \f(CWev::now\fR" 4
+.IX Item "ev::tstamp, ev::now"
+Aliases to the same types/functions as with the \f(CW\*(C`ev_\*(C'\fR prefix.
+.ie n .IP """ev::io""\fR, \f(CW""ev::timer""\fR, \f(CW""ev::periodic""\fR, \f(CW""ev::idle""\fR, \f(CW""ev::sig"" etc." 4
+.el .IP "\f(CWev::io\fR, \f(CWev::timer\fR, \f(CWev::periodic\fR, \f(CWev::idle\fR, \f(CWev::sig\fR etc." 4
+.IX Item "ev::io, ev::timer, ev::periodic, ev::idle, ev::sig etc."
+For each \f(CW\*(C`ev_TYPE\*(C'\fR watcher in \fIev.h\fR there is a corresponding class of
+the same name in the \f(CW\*(C`ev\*(C'\fR namespace, with the exception of \f(CW\*(C`ev_signal\*(C'\fR
+which is called \f(CW\*(C`ev::sig\*(C'\fR to avoid clashes with the \f(CW\*(C`signal\*(C'\fR macro
+defines by many implementations.
+.Sp
+All of those classes have these methods:
+.RS 4
+.IP "ev::TYPE::TYPE ()" 4
+.IX Item "ev::TYPE::TYPE ()"
+.PD 0
+.IP "ev::TYPE::TYPE (struct ev_loop *)" 4
+.IX Item "ev::TYPE::TYPE (struct ev_loop *)"
+.IP "ev::TYPE::~TYPE" 4
+.IX Item "ev::TYPE::~TYPE"
+.PD
+The constructor (optionally) takes an event loop to associate the watcher
+with. If it is omitted, it will use \f(CW\*(C`EV_DEFAULT\*(C'\fR.
+.Sp
+The constructor calls \f(CW\*(C`ev_init\*(C'\fR for you, which means you have to call the
+\&\f(CW\*(C`set\*(C'\fR method before starting it.
+.Sp
+It will not set a callback, however: You have to call the templated \f(CW\*(C`set\*(C'\fR
+method to set a callback before you can start the watcher.
+.Sp
+(The reason why you have to use a method is a limitation in \*(C+ which does
+not allow explicit template arguments for constructors).
+.Sp
+The destructor automatically stops the watcher if it is active.
+.IP "w\->set<class, &class::method> (object *)" 4
+.IX Item "w->set<class, &class::method> (object *)"
+This method sets the callback method to call. The method has to have a
+signature of \f(CW\*(C`void (*)(ev_TYPE &, int)\*(C'\fR, it receives the watcher as
+first argument and the \f(CW\*(C`revents\*(C'\fR as second. The object must be given as
+parameter and is stored in the \f(CW\*(C`data\*(C'\fR member of the watcher.
+.Sp
+This method synthesizes efficient thunking code to call your method from
+the C callback that libev requires. If your compiler can inline your
+callback (i.e. it is visible to it at the place of the \f(CW\*(C`set\*(C'\fR call and
+your compiler is good :), then the method will be fully inlined into the
+thunking function, making it as fast as a direct C callback.
+.Sp
+Example: simple class declaration and watcher initialisation
+.Sp
+.Vb 4
+\& struct myclass
+\& {
+\& void io_cb (ev::io &w, int revents) { }
+\& }
+\&
+\& myclass obj;
+\& ev::io iow;
+\& iow.set <myclass, &myclass::io_cb> (&obj);
+.Ve
+.IP "w\->set<function> (void *data = 0)" 4
+.IX Item "w->set<function> (void *data = 0)"
+Also sets a callback, but uses a static method or plain function as
+callback. The optional \f(CW\*(C`data\*(C'\fR argument will be stored in the watcher's
+\&\f(CW\*(C`data\*(C'\fR member and is free for you to use.
+.Sp
+The prototype of the \f(CW\*(C`function\*(C'\fR must be \f(CW\*(C`void (*)(ev::TYPE &w, int)\*(C'\fR.
+.Sp
+See the method\-\f(CW\*(C`set\*(C'\fR above for more details.
+.Sp
+Example:
+.Sp
+.Vb 2
+\& static void io_cb (ev::io &w, int revents) { }
+\& iow.set <io_cb> ();
+.Ve
+.IP "w\->set (struct ev_loop *)" 4
+.IX Item "w->set (struct ev_loop *)"
+Associates a different \f(CW\*(C`struct ev_loop\*(C'\fR with this watcher. You can only
+do this when the watcher is inactive (and not pending either).
+.IP "w\->set ([args])" 4
+.IX Item "w->set ([args])"
+Basically the same as \f(CW\*(C`ev_TYPE_set\*(C'\fR, with the same args. Must be
+called at least once. Unlike the C counterpart, an active watcher gets
+automatically stopped and restarted when reconfiguring it with this
+method.
+.IP "w\->start ()" 4
+.IX Item "w->start ()"
+Starts the watcher. Note that there is no \f(CW\*(C`loop\*(C'\fR argument, as the
+constructor already stores the event loop.
+.IP "w\->stop ()" 4
+.IX Item "w->stop ()"
+Stops the watcher if it is active. Again, no \f(CW\*(C`loop\*(C'\fR argument.
+.ie n .IP "w\->again () (""ev::timer""\fR, \f(CW""ev::periodic"" only)" 4
+.el .IP "w\->again () (\f(CWev::timer\fR, \f(CWev::periodic\fR only)" 4
+.IX Item "w->again () (ev::timer, ev::periodic only)"
+For \f(CW\*(C`ev::timer\*(C'\fR and \f(CW\*(C`ev::periodic\*(C'\fR, this invokes the corresponding
+\&\f(CW\*(C`ev_TYPE_again\*(C'\fR function.
+.ie n .IP "w\->sweep () (""ev::embed"" only)" 4
+.el .IP "w\->sweep () (\f(CWev::embed\fR only)" 4
+.IX Item "w->sweep () (ev::embed only)"
+Invokes \f(CW\*(C`ev_embed_sweep\*(C'\fR.
+.ie n .IP "w\->update () (""ev::stat"" only)" 4
+.el .IP "w\->update () (\f(CWev::stat\fR only)" 4
+.IX Item "w->update () (ev::stat only)"
+Invokes \f(CW\*(C`ev_stat_stat\*(C'\fR.
+.RE
+.RS 4
+.RE
+.PP
+Example: Define a class with an \s-1IO\s0 and idle watcher, start one of them in
+the constructor.
+.PP
+.Vb 4
+\& class myclass
+\& {
+\& ev::io io; void io_cb (ev::io &w, int revents);
+\& ev:idle idle void idle_cb (ev::idle &w, int revents);
+\&
+\& myclass (int fd)
+\& {
+\& io .set <myclass, &myclass::io_cb > (this);
+\& idle.set <myclass, &myclass::idle_cb> (this);
+\&
+\& io.start (fd, ev::READ);
+\& }
+\& };
+.Ve
+.SH "OTHER LANGUAGE BINDINGS"
+.IX Header "OTHER LANGUAGE BINDINGS"
+Libev does not offer other language bindings itself, but bindings for a
+numbe rof languages exist in the form of third-party packages. If you know
+any interesting language binding in addition to the ones listed here, drop
+me a note.
+.IP "Perl" 4
+.IX Item "Perl"
+The \s-1EV\s0 module implements the full libev \s-1API\s0 and is actually used to test
+libev. \s-1EV\s0 is developed together with libev. Apart from the \s-1EV\s0 core module,
+there are additional modules that implement libev-compatible interfaces
+to \f(CW\*(C`libadns\*(C'\fR (\f(CW\*(C`EV::ADNS\*(C'\fR), \f(CW\*(C`Net::SNMP\*(C'\fR (\f(CW\*(C`Net::SNMP::EV\*(C'\fR) and the
+\&\f(CW\*(C`libglib\*(C'\fR event core (\f(CW\*(C`Glib::EV\*(C'\fR and \f(CW\*(C`EV::Glib\*(C'\fR).
+.Sp
+It can be found and installed via \s-1CPAN\s0, its homepage is found at
+<http://software.schmorp.de/pkg/EV>.
+.IP "Ruby" 4
+.IX Item "Ruby"
+Tony Arcieri has written a ruby extension that offers access to a subset
+of the libev \s-1API\s0 and adds filehandle abstractions, asynchronous \s-1DNS\s0 and
+more on top of it. It can be found via gem servers. Its homepage is at
+<http://rev.rubyforge.org/>.
+.IP "D" 4
+.IX Item "D"
+Leandro Lucarella has written a D language binding (\fIev.d\fR) for libev, to
+be found at <http://git.llucax.com.ar/?p=software/ev.d.git;a=summary>.
+.SH "MACRO MAGIC"
+.IX Header "MACRO MAGIC"
+Libev can be compiled with a variety of options, the most fundamantal
+of which is \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR. This option determines whether (most)
+functions and callbacks have an initial \f(CW\*(C`struct ev_loop *\*(C'\fR argument.
+.PP
+To make it easier to write programs that cope with either variant, the
+following macros are defined:
+.ie n .IP """EV_A""\fR, \f(CW""EV_A_""" 4
+.el .IP "\f(CWEV_A\fR, \f(CWEV_A_\fR" 4
+.IX Item "EV_A, EV_A_"
+This provides the loop \fIargument\fR for functions, if one is required (\*(L"ev
+loop argument\*(R"). The \f(CW\*(C`EV_A\*(C'\fR form is used when this is the sole argument,
+\&\f(CW\*(C`EV_A_\*(C'\fR is used when other arguments are following. Example:
+.Sp
+.Vb 3
+\& ev_unref (EV_A);
+\& ev_timer_add (EV_A_ watcher);
+\& ev_loop (EV_A_ 0);
+.Ve
+.Sp
+It assumes the variable \f(CW\*(C`loop\*(C'\fR of type \f(CW\*(C`struct ev_loop *\*(C'\fR is in scope,
+which is often provided by the following macro.
+.ie n .IP """EV_P""\fR, \f(CW""EV_P_""" 4
+.el .IP "\f(CWEV_P\fR, \f(CWEV_P_\fR" 4
+.IX Item "EV_P, EV_P_"
+This provides the loop \fIparameter\fR for functions, if one is required (\*(L"ev
+loop parameter\*(R"). The \f(CW\*(C`EV_P\*(C'\fR form is used when this is the sole parameter,
+\&\f(CW\*(C`EV_P_\*(C'\fR is used when other parameters are following. Example:
+.Sp
+.Vb 2
+\& // this is how ev_unref is being declared
+\& static void ev_unref (EV_P);
+\&
+\& // this is how you can declare your typical callback
+\& static void cb (EV_P_ ev_timer *w, int revents)
+.Ve
+.Sp
+It declares a parameter \f(CW\*(C`loop\*(C'\fR of type \f(CW\*(C`struct ev_loop *\*(C'\fR, quite
+suitable for use with \f(CW\*(C`EV_A\*(C'\fR.
+.ie n .IP """EV_DEFAULT""\fR, \f(CW""EV_DEFAULT_""" 4
+.el .IP "\f(CWEV_DEFAULT\fR, \f(CWEV_DEFAULT_\fR" 4
+.IX Item "EV_DEFAULT, EV_DEFAULT_"
+Similar to the other two macros, this gives you the value of the default
+loop, if multiple loops are supported (\*(L"ev loop default\*(R").
+.ie n .IP """EV_DEFAULT_UC""\fR, \f(CW""EV_DEFAULT_UC_""" 4
+.el .IP "\f(CWEV_DEFAULT_UC\fR, \f(CWEV_DEFAULT_UC_\fR" 4
+.IX Item "EV_DEFAULT_UC, EV_DEFAULT_UC_"
+Usage identical to \f(CW\*(C`EV_DEFAULT\*(C'\fR and \f(CW\*(C`EV_DEFAULT_\*(C'\fR, but requires that the
+default loop has been initialised (\f(CW\*(C`UC\*(C'\fR == unchecked). Their behaviour
+is undefined when the default loop has not been initialised by a previous
+execution of \f(CW\*(C`EV_DEFAULT\*(C'\fR, \f(CW\*(C`EV_DEFAULT_\*(C'\fR or \f(CW\*(C`ev_default_init (...)\*(C'\fR.
+.Sp
+It is often prudent to use \f(CW\*(C`EV_DEFAULT\*(C'\fR when initialising the first
+watcher in a function but use \f(CW\*(C`EV_DEFAULT_UC\*(C'\fR afterwards.
+.PP
+Example: Declare and initialise a check watcher, utilising the above
+macros so it will work regardless of whether multiple loops are supported
+or not.
+.PP
+.Vb 5
+\& static void
+\& check_cb (EV_P_ ev_timer *w, int revents)
+\& {
+\& ev_check_stop (EV_A_ w);
+\& }
+\&
+\& ev_check check;
+\& ev_check_init (&check, check_cb);
+\& ev_check_start (EV_DEFAULT_ &check);
+\& ev_loop (EV_DEFAULT_ 0);
+.Ve
+.SH "EMBEDDING"
+.IX Header "EMBEDDING"
+Libev can (and often is) directly embedded into host
+applications. Examples of applications that embed it include the Deliantra
+Game Server, the \s-1EV\s0 perl module, the \s-1GNU\s0 Virtual Private Ethernet (gvpe)
+and rxvt-unicode.
+.PP
+The goal is to enable you to just copy the necessary files into your
+source directory without having to change even a single line in them, so
+you can easily upgrade by simply copying (or having a checked-out copy of
+libev somewhere in your source tree).
+.Sh "\s-1FILESETS\s0"
+.IX Subsection "FILESETS"
+Depending on what features you need you need to include one or more sets of files
+in your app.
+.PP
+\fI\s-1CORE\s0 \s-1EVENT\s0 \s-1LOOP\s0\fR
+.IX Subsection "CORE EVENT LOOP"
+.PP
+To include only the libev core (all the \f(CW\*(C`ev_*\*(C'\fR functions), with manual
+configuration (no autoconf):
+.PP
+.Vb 2
+\& #define EV_STANDALONE 1
+\& #include "ev.c"
+.Ve
+.PP
+This will automatically include \fIev.h\fR, too, and should be done in a
+single C source file only to provide the function implementations. To use
+it, do the same for \fIev.h\fR in all files wishing to use this \s-1API\s0 (best
+done by writing a wrapper around \fIev.h\fR that you can include instead and
+where you can put other configuration options):
+.PP
+.Vb 2
+\& #define EV_STANDALONE 1
+\& #include "ev.h"
+.Ve
+.PP
+Both header files and implementation files can be compiled with a \*(C+
+compiler (at least, thats a stated goal, and breakage will be treated
+as a bug).
+.PP
+You need the following files in your source tree, or in a directory
+in your include path (e.g. in libev/ when using \-Ilibev):
+.PP
+.Vb 4
+\& ev.h
+\& ev.c
+\& ev_vars.h
+\& ev_wrap.h
+\&
+\& ev_win32.c required on win32 platforms only
+\&
+\& ev_select.c only when select backend is enabled (which is enabled by default)
+\& ev_poll.c only when poll backend is enabled (disabled by default)
+\& ev_epoll.c only when the epoll backend is enabled (disabled by default)
+\& ev_kqueue.c only when the kqueue backend is enabled (disabled by default)
+\& ev_port.c only when the solaris port backend is enabled (disabled by default)
+.Ve
+.PP
+\&\fIev.c\fR includes the backend files directly when enabled, so you only need
+to compile this single file.
+.PP
+\fI\s-1LIBEVENT\s0 \s-1COMPATIBILITY\s0 \s-1API\s0\fR
+.IX Subsection "LIBEVENT COMPATIBILITY API"
+.PP
+To include the libevent compatibility \s-1API\s0, also include:
+.PP
+.Vb 1
+\& #include "event.c"
+.Ve
+.PP
+in the file including \fIev.c\fR, and:
+.PP
+.Vb 1
+\& #include "event.h"
+.Ve
+.PP
+in the files that want to use the libevent \s-1API\s0. This also includes \fIev.h\fR.
+.PP
+You need the following additional files for this:
+.PP
+.Vb 2
+\& event.h
+\& event.c
+.Ve
+.PP
+\fI\s-1AUTOCONF\s0 \s-1SUPPORT\s0\fR
+.IX Subsection "AUTOCONF SUPPORT"
+.PP
+Instead of using \f(CW\*(C`EV_STANDALONE=1\*(C'\fR and providing your config in
+whatever way you want, you can also \f(CW\*(C`m4_include([libev.m4])\*(C'\fR in your
+\&\fIconfigure.ac\fR and leave \f(CW\*(C`EV_STANDALONE\*(C'\fR undefined. \fIev.c\fR will then
+include \fIconfig.h\fR and configure itself accordingly.
+.PP
+For this of course you need the m4 file:
+.PP
+.Vb 1
+\& libev.m4
+.Ve
+.Sh "\s-1PREPROCESSOR\s0 \s-1SYMBOLS/MACROS\s0"
+.IX Subsection "PREPROCESSOR SYMBOLS/MACROS"
+Libev can be configured via a variety of preprocessor symbols you have to
+define before including any of its files. The default in the absense of
+autoconf is noted for every option.
+.IP "\s-1EV_STANDALONE\s0" 4
+.IX Item "EV_STANDALONE"
+Must always be \f(CW1\fR if you do not use autoconf configuration, which
+keeps libev from including \fIconfig.h\fR, and it also defines dummy
+implementations for some libevent functions (such as logging, which is not
+supported). It will also not define any of the structs usually found in
+\&\fIevent.h\fR that are not directly supported by the libev core alone.
+.IP "\s-1EV_USE_MONOTONIC\s0" 4
+.IX Item "EV_USE_MONOTONIC"
+If defined to be \f(CW1\fR, libev will try to detect the availability of the
+monotonic clock option at both compiletime and runtime. Otherwise no use
+of the monotonic clock option will be attempted. If you enable this, you
+usually have to link against librt or something similar. Enabling it when
+the functionality isn't available is safe, though, although you have
+to make sure you link against any libraries where the \f(CW\*(C`clock_gettime\*(C'\fR
+function is hiding in (often \fI\-lrt\fR).
+.IP "\s-1EV_USE_REALTIME\s0" 4
+.IX Item "EV_USE_REALTIME"
+If defined to be \f(CW1\fR, libev will try to detect the availability of the
+realtime clock option at compiletime (and assume its availability at
+runtime if successful). Otherwise no use of the realtime clock option will
+be attempted. This effectively replaces \f(CW\*(C`gettimeofday\*(C'\fR by \f(CW\*(C`clock_get
+(CLOCK_REALTIME, ...)\*(C'\fR and will not normally affect correctness. See the
+note about libraries in the description of \f(CW\*(C`EV_USE_MONOTONIC\*(C'\fR, though.
+.IP "\s-1EV_USE_NANOSLEEP\s0" 4
+.IX Item "EV_USE_NANOSLEEP"
+If defined to be \f(CW1\fR, libev will assume that \f(CW\*(C`nanosleep ()\*(C'\fR is available
+and will use it for delays. Otherwise it will use \f(CW\*(C`select ()\*(C'\fR.
+.IP "\s-1EV_USE_EVENTFD\s0" 4
+.IX Item "EV_USE_EVENTFD"
+If defined to be \f(CW1\fR, then libev will assume that \f(CW\*(C`eventfd ()\*(C'\fR is
+available and will probe for kernel support at runtime. This will improve
+\&\f(CW\*(C`ev_signal\*(C'\fR and \f(CW\*(C`ev_async\*(C'\fR performance and reduce resource consumption.
+If undefined, it will be enabled if the headers indicate GNU/Linux + Glibc
+2.7 or newer, otherwise disabled.
+.IP "\s-1EV_USE_SELECT\s0" 4
+.IX Item "EV_USE_SELECT"
+If undefined or defined to be \f(CW1\fR, libev will compile in support for the
+\&\f(CW\*(C`select\*(C'\fR(2) backend. No attempt at autodetection will be done: if no
+other method takes over, select will be it. Otherwise the select backend
+will not be compiled in.
+.IP "\s-1EV_SELECT_USE_FD_SET\s0" 4
+.IX Item "EV_SELECT_USE_FD_SET"
+If defined to \f(CW1\fR, then the select backend will use the system \f(CW\*(C`fd_set\*(C'\fR
+structure. This is useful if libev doesn't compile due to a missing
+\&\f(CW\*(C`NFDBITS\*(C'\fR or \f(CW\*(C`fd_mask\*(C'\fR definition or it misguesses the bitset layout on
+exotic systems. This usually limits the range of file descriptors to some
+low limit such as 1024 or might have other limitations (winsocket only
+allows 64 sockets). The \f(CW\*(C`FD_SETSIZE\*(C'\fR macro, set before compilation, might
+influence the size of the \f(CW\*(C`fd_set\*(C'\fR used.
+.IP "\s-1EV_SELECT_IS_WINSOCKET\s0" 4
+.IX Item "EV_SELECT_IS_WINSOCKET"
+When defined to \f(CW1\fR, the select backend will assume that
+select/socket/connect etc. don't understand file descriptors but
+wants osf handles on win32 (this is the case when the select to
+be used is the winsock select). This means that it will call
+\&\f(CW\*(C`_get_osfhandle\*(C'\fR on the fd to convert it to an \s-1OS\s0 handle. Otherwise,
+it is assumed that all these functions actually work on fds, even
+on win32. Should not be defined on non\-win32 platforms.
+.IP "\s-1EV_FD_TO_WIN32_HANDLE\s0" 4
+.IX Item "EV_FD_TO_WIN32_HANDLE"
+If \f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR is enabled, then libev needs a way to map
+file descriptors to socket handles. When not defining this symbol (the
+default), then libev will call \f(CW\*(C`_get_osfhandle\*(C'\fR, which is usually
+correct. In some cases, programs use their own file descriptor management,
+in which case they can provide this function to map fds to socket handles.
+.IP "\s-1EV_USE_POLL\s0" 4
+.IX Item "EV_USE_POLL"
+If defined to be \f(CW1\fR, libev will compile in support for the \f(CW\*(C`poll\*(C'\fR(2)
+backend. Otherwise it will be enabled on non\-win32 platforms. It
+takes precedence over select.
+.IP "\s-1EV_USE_EPOLL\s0" 4
+.IX Item "EV_USE_EPOLL"
+If defined to be \f(CW1\fR, libev will compile in support for the Linux
+\&\f(CW\*(C`epoll\*(C'\fR(7) backend. Its availability will be detected at runtime,
+otherwise another method will be used as fallback. This is the preferred
+backend for GNU/Linux systems. If undefined, it will be enabled if the
+headers indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled.
+.IP "\s-1EV_USE_KQUEUE\s0" 4
+.IX Item "EV_USE_KQUEUE"
+If defined to be \f(CW1\fR, libev will compile in support for the \s-1BSD\s0 style
+\&\f(CW\*(C`kqueue\*(C'\fR(2) backend. Its actual availability will be detected at runtime,
+otherwise another method will be used as fallback. This is the preferred
+backend for \s-1BSD\s0 and BSD-like systems, although on most BSDs kqueue only
+supports some types of fds correctly (the only platform we found that
+supports ptys for example was NetBSD), so kqueue might be compiled in, but
+not be used unless explicitly requested. The best way to use it is to find
+out whether kqueue supports your type of fd properly and use an embedded
+kqueue loop.
+.IP "\s-1EV_USE_PORT\s0" 4
+.IX Item "EV_USE_PORT"
+If defined to be \f(CW1\fR, libev will compile in support for the Solaris
+10 port style backend. Its availability will be detected at runtime,
+otherwise another method will be used as fallback. This is the preferred
+backend for Solaris 10 systems.
+.IP "\s-1EV_USE_DEVPOLL\s0" 4
+.IX Item "EV_USE_DEVPOLL"
+reserved for future expansion, works like the \s-1USE\s0 symbols above.
+.IP "\s-1EV_USE_INOTIFY\s0" 4
+.IX Item "EV_USE_INOTIFY"
+If defined to be \f(CW1\fR, libev will compile in support for the Linux inotify
+interface to speed up \f(CW\*(C`ev_stat\*(C'\fR watchers. Its actual availability will
+be detected at runtime. If undefined, it will be enabled if the headers
+indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled.
+.IP "\s-1EV_ATOMIC_T\s0" 4
+.IX Item "EV_ATOMIC_T"
+Libev requires an integer type (suitable for storing \f(CW0\fR or \f(CW1\fR) whose
+access is atomic with respect to other threads or signal contexts. No such
+type is easily found in the C language, so you can provide your own type
+that you know is safe for your purposes. It is used both for signal handler \*(L"locking\*(R"
+as well as for signal and thread safety in \f(CW\*(C`ev_async\*(C'\fR watchers.
+.Sp
+In the absense of this define, libev will use \f(CW\*(C`sig_atomic_t volatile\*(C'\fR
+(from \fIsignal.h\fR), which is usually good enough on most platforms.
+.IP "\s-1EV_H\s0" 4
+.IX Item "EV_H"
+The name of the \fIev.h\fR header file used to include it. The default if
+undefined is \f(CW"ev.h"\fR in \fIevent.h\fR, \fIev.c\fR and \fIev++.h\fR. This can be
+used to virtually rename the \fIev.h\fR header file in case of conflicts.
+.IP "\s-1EV_CONFIG_H\s0" 4
+.IX Item "EV_CONFIG_H"
+If \f(CW\*(C`EV_STANDALONE\*(C'\fR isn't \f(CW1\fR, this variable can be used to override
+\&\fIev.c\fR's idea of where to find the \fIconfig.h\fR file, similarly to
+\&\f(CW\*(C`EV_H\*(C'\fR, above.
+.IP "\s-1EV_EVENT_H\s0" 4
+.IX Item "EV_EVENT_H"
+Similarly to \f(CW\*(C`EV_H\*(C'\fR, this macro can be used to override \fIevent.c\fR's idea
+of how the \fIevent.h\fR header can be found, the default is \f(CW"event.h"\fR.
+.IP "\s-1EV_PROTOTYPES\s0" 4
+.IX Item "EV_PROTOTYPES"
+If defined to be \f(CW0\fR, then \fIev.h\fR will not define any function
+prototypes, but still define all the structs and other symbols. This is
+occasionally useful if you want to provide your own wrapper functions
+around libev functions.
+.IP "\s-1EV_MULTIPLICITY\s0" 4
+.IX Item "EV_MULTIPLICITY"
+If undefined or defined to \f(CW1\fR, then all event-loop-specific functions
+will have the \f(CW\*(C`struct ev_loop *\*(C'\fR as first argument, and you can create
+additional independent event loops. Otherwise there will be no support
+for multiple event loops and there is no first event loop pointer
+argument. Instead, all functions act on the single default loop.
+.IP "\s-1EV_MINPRI\s0" 4
+.IX Item "EV_MINPRI"
+.PD 0
+.IP "\s-1EV_MAXPRI\s0" 4
+.IX Item "EV_MAXPRI"
+.PD
+The range of allowed priorities. \f(CW\*(C`EV_MINPRI\*(C'\fR must be smaller or equal to
+\&\f(CW\*(C`EV_MAXPRI\*(C'\fR, but otherwise there are no non-obvious limitations. You can
+provide for more priorities by overriding those symbols (usually defined
+to be \f(CW\*(C`\-2\*(C'\fR and \f(CW2\fR, respectively).
+.Sp
+When doing priority-based operations, libev usually has to linearly search
+all the priorities, so having many of them (hundreds) uses a lot of space
+and time, so using the defaults of five priorities (\-2 .. +2) is usually
+fine.
+.Sp
+If your embedding app does not need any priorities, defining these both to
+\&\f(CW0\fR will save some memory and cpu.
+.IP "\s-1EV_PERIODIC_ENABLE\s0" 4
+.IX Item "EV_PERIODIC_ENABLE"
+If undefined or defined to be \f(CW1\fR, then periodic timers are supported. If
+defined to be \f(CW0\fR, then they are not. Disabling them saves a few kB of
+code.
+.IP "\s-1EV_IDLE_ENABLE\s0" 4
+.IX Item "EV_IDLE_ENABLE"
+If undefined or defined to be \f(CW1\fR, then idle watchers are supported. If
+defined to be \f(CW0\fR, then they are not. Disabling them saves a few kB of
+code.
+.IP "\s-1EV_EMBED_ENABLE\s0" 4
+.IX Item "EV_EMBED_ENABLE"
+If undefined or defined to be \f(CW1\fR, then embed watchers are supported. If
+defined to be \f(CW0\fR, then they are not.
+.IP "\s-1EV_STAT_ENABLE\s0" 4
+.IX Item "EV_STAT_ENABLE"
+If undefined or defined to be \f(CW1\fR, then stat watchers are supported. If
+defined to be \f(CW0\fR, then they are not.
+.IP "\s-1EV_FORK_ENABLE\s0" 4
+.IX Item "EV_FORK_ENABLE"
+If undefined or defined to be \f(CW1\fR, then fork watchers are supported. If
+defined to be \f(CW0\fR, then they are not.
+.IP "\s-1EV_ASYNC_ENABLE\s0" 4
+.IX Item "EV_ASYNC_ENABLE"
+If undefined or defined to be \f(CW1\fR, then async watchers are supported. If
+defined to be \f(CW0\fR, then they are not.
+.IP "\s-1EV_MINIMAL\s0" 4
+.IX Item "EV_MINIMAL"
+If you need to shave off some kilobytes of code at the expense of some
+speed, define this symbol to \f(CW1\fR. Currently this is used to override some
+inlining decisions, saves roughly 30% codesize of amd64. It also selects a
+much smaller 2\-heap for timer management over the default 4\-heap.
+.IP "\s-1EV_PID_HASHSIZE\s0" 4
+.IX Item "EV_PID_HASHSIZE"
+\&\f(CW\*(C`ev_child\*(C'\fR watchers use a small hash table to distribute workload by
+pid. The default size is \f(CW16\fR (or \f(CW1\fR with \f(CW\*(C`EV_MINIMAL\*(C'\fR), usually more
+than enough. If you need to manage thousands of children you might want to
+increase this value (\fImust\fR be a power of two).
+.IP "\s-1EV_INOTIFY_HASHSIZE\s0" 4
+.IX Item "EV_INOTIFY_HASHSIZE"
+\&\f(CW\*(C`ev_stat\*(C'\fR watchers use a small hash table to distribute workload by
+inotify watch id. The default size is \f(CW16\fR (or \f(CW1\fR with \f(CW\*(C`EV_MINIMAL\*(C'\fR),
+usually more than enough. If you need to manage thousands of \f(CW\*(C`ev_stat\*(C'\fR
+watchers you might want to increase this value (\fImust\fR be a power of
+two).
+.IP "\s-1EV_USE_4HEAP\s0" 4
+.IX Item "EV_USE_4HEAP"
+Heaps are not very cache-efficient. To improve the cache-efficiency of the
+timer and periodics heap, libev uses a 4\-heap when this symbol is defined
+to \f(CW1\fR. The 4\-heap uses more complicated (longer) code but has a
+noticable after performance with many (thousands) of watchers.
+.Sp
+The default is \f(CW1\fR unless \f(CW\*(C`EV_MINIMAL\*(C'\fR is set in which case it is \f(CW0\fR
+(disabled).
+.IP "\s-1EV_HEAP_CACHE_AT\s0" 4
+.IX Item "EV_HEAP_CACHE_AT"
+Heaps are not very cache-efficient. To improve the cache-efficiency of the
+timer and periodics heap, libev can cache the timestamp (\fIat\fR) within
+the heap structure (selected by defining \f(CW\*(C`EV_HEAP_CACHE_AT\*(C'\fR to \f(CW1\fR),
+which uses 8\-12 bytes more per watcher and a few hundred bytes more code,
+but avoids random read accesses on heap changes. This noticably improves
+performance noticably with with many (hundreds) of watchers.
+.Sp
+The default is \f(CW1\fR unless \f(CW\*(C`EV_MINIMAL\*(C'\fR is set in which case it is \f(CW0\fR
+(disabled).
+.IP "\s-1EV_COMMON\s0" 4
+.IX Item "EV_COMMON"
+By default, all watchers have a \f(CW\*(C`void *data\*(C'\fR member. By redefining
+this macro to a something else you can include more and other types of
+members. You have to define it each time you include one of the files,
+though, and it must be identical each time.
+.Sp
+For example, the perl \s-1EV\s0 module uses something like this:
+.Sp
+.Vb 3
+\& #define EV_COMMON \e
+\& SV *self; /* contains this struct */ \e
+\& SV *cb_sv, *fh /* note no trailing ";" */
+.Ve
+.IP "\s-1EV_CB_DECLARE\s0 (type)" 4
+.IX Item "EV_CB_DECLARE (type)"
+.PD 0
+.IP "\s-1EV_CB_INVOKE\s0 (watcher, revents)" 4
+.IX Item "EV_CB_INVOKE (watcher, revents)"
+.IP "ev_set_cb (ev, cb)" 4
+.IX Item "ev_set_cb (ev, cb)"
+.PD
+Can be used to change the callback member declaration in each watcher,
+and the way callbacks are invoked and set. Must expand to a struct member
+definition and a statement, respectively. See the \fIev.h\fR header file for
+their default definitions. One possible use for overriding these is to
+avoid the \f(CW\*(C`struct ev_loop *\*(C'\fR as first argument in all cases, or to use
+method calls instead of plain function calls in \*(C+.
+.Sh "\s-1EXPORTED\s0 \s-1API\s0 \s-1SYMBOLS\s0"
+.IX Subsection "EXPORTED API SYMBOLS"
+If you need to re-export the \s-1API\s0 (e.g. via a dll) and you need a list of
+exported symbols, you can use the provided \fISymbol.*\fR files which list
+all public symbols, one per line:
+.PP
+.Vb 2
+\& Symbols.ev for libev proper
+\& Symbols.event for the libevent emulation
+.Ve
+.PP
+This can also be used to rename all public symbols to avoid clashes with
+multiple versions of libev linked together (which is obviously bad in
+itself, but sometimes it is inconvinient to avoid this).
+.PP
+A sed command like this will create wrapper \f(CW\*(C`#define\*(C'\fR's that you need to
+include before including \fIev.h\fR:
+.PP
+.Vb 1
+\& <Symbols.ev sed \-e "s/.*/#define & myprefix_&/" >wrap.h
+.Ve
+.PP
+This would create a file \fIwrap.h\fR which essentially looks like this:
+.PP
+.Vb 4
+\& #define ev_backend myprefix_ev_backend
+\& #define ev_check_start myprefix_ev_check_start
+\& #define ev_check_stop myprefix_ev_check_stop
+\& ...
+.Ve
+.Sh "\s-1EXAMPLES\s0"
+.IX Subsection "EXAMPLES"
+For a real-world example of a program the includes libev
+verbatim, you can have a look at the \s-1EV\s0 perl module
+(<http://software.schmorp.de/pkg/EV.html>). It has the libev files in
+the \fIlibev/\fR subdirectory and includes them in the \fI\s-1EV/EVAPI\s0.h\fR (public
+interface) and \fI\s-1EV\s0.xs\fR (implementation) files. Only the \fI\s-1EV\s0.xs\fR file
+will be compiled. It is pretty complex because it provides its own header
+file.
+.PP
+The usage in rxvt-unicode is simpler. It has a \fIev_cpp.h\fR header file
+that everybody includes and which overrides some configure choices:
+.PP
+.Vb 9
+\& #define EV_MINIMAL 1
+\& #define EV_USE_POLL 0
+\& #define EV_MULTIPLICITY 0
+\& #define EV_PERIODIC_ENABLE 0
+\& #define EV_STAT_ENABLE 0
+\& #define EV_FORK_ENABLE 0
+\& #define EV_CONFIG_H <config.h>
+\& #define EV_MINPRI 0
+\& #define EV_MAXPRI 0
+\&
+\& #include "ev++.h"
+.Ve
+.PP
+And a \fIev_cpp.C\fR implementation file that contains libev proper and is compiled:
+.PP
+.Vb 2
+\& #include "ev_cpp.h"
+\& #include "ev.c"
+.Ve
+.SH "THREADS AND COROUTINES"
+.IX Header "THREADS AND COROUTINES"
+.Sh "\s-1THREADS\s0"
+.IX Subsection "THREADS"
+Libev itself is completely threadsafe, but it uses no locking. This
+means that you can use as many loops as you want in parallel, as long as
+only one thread ever calls into one libev function with the same loop
+parameter.
+.PP
+Or put differently: calls with different loop parameters can be done in
+parallel from multiple threads, calls with the same loop parameter must be
+done serially (but can be done from different threads, as long as only one
+thread ever is inside a call at any point in time, e.g. by using a mutex
+per loop).
+.PP
+If you want to know which design is best for your problem, then I cannot
+help you but by giving some generic advice:
+.IP "\(bu" 4
+most applications have a main thread: use the default libev loop
+in that thread, or create a seperate thread running only the default loop.
+.Sp
+This helps integrating other libraries or software modules that use libev
+themselves and don't care/know about threading.
+.IP "\(bu" 4
+one loop per thread is usually a good model.
+.Sp
+Doing this is almost never wrong, sometimes a better-performance model
+exists, but it is always a good start.
+.IP "\(bu" 4
+other models exist, such as the leader/follower pattern, where one
+loop is handed through multiple threads in a kind of round-robbin fashion.
+.Sp
+Chosing a model is hard \- look around, learn, know that usually you cna do
+better than you currently do :\-)
+.IP "\(bu" 4
+often you need to talk to some other thread which blocks in the
+event loop \- \f(CW\*(C`ev_async\*(C'\fR watchers can be used to wake them up from other
+threads safely (or from signal contexts...).
+.Sh "\s-1COROUTINES\s0"
+.IX Subsection "COROUTINES"
+Libev is much more accomodating to coroutines (\*(L"cooperative threads\*(R"):
+libev fully supports nesting calls to it's functions from different
+coroutines (e.g. you can call \f(CW\*(C`ev_loop\*(C'\fR on the same loop from two
+different coroutines and switch freely between both coroutines running the
+loop, as long as you don't confuse yourself). The only exception is that
+you must not do this from \f(CW\*(C`ev_periodic\*(C'\fR reschedule callbacks.
+.PP
+Care has been invested into making sure that libev does not keep local
+state inside \f(CW\*(C`ev_loop\*(C'\fR, and other calls do not usually allow coroutine
+switches.
+.SH "COMPLEXITIES"
+.IX Header "COMPLEXITIES"
+In this section the complexities of (many of) the algorithms used inside
+libev will be explained. For complexity discussions about backends see the
+documentation for \f(CW\*(C`ev_default_init\*(C'\fR.
+.PP
+All of the following are about amortised time: If an array needs to be
+extended, libev needs to realloc and move the whole array, but this
+happens asymptotically never with higher number of elements, so O(1) might
+mean it might do a lengthy realloc operation in rare cases, but on average
+it is much faster and asymptotically approaches constant time.
+.IP "Starting and stopping timer/periodic watchers: O(log skipped_other_timers)" 4
+.IX Item "Starting and stopping timer/periodic watchers: O(log skipped_other_timers)"
+This means that, when you have a watcher that triggers in one hour and
+there are 100 watchers that would trigger before that then inserting will
+have to skip roughly seven (\f(CW\*(C`ld 100\*(C'\fR) of these watchers.
+.IP "Changing timer/periodic watchers (by autorepeat or calling again): O(log skipped_other_timers)" 4
+.IX Item "Changing timer/periodic watchers (by autorepeat or calling again): O(log skipped_other_timers)"
+That means that changing a timer costs less than removing/adding them
+as only the relative motion in the event queue has to be paid for.
+.IP "Starting io/check/prepare/idle/signal/child/fork/async watchers: O(1)" 4
+.IX Item "Starting io/check/prepare/idle/signal/child/fork/async watchers: O(1)"
+These just add the watcher into an array or at the head of a list.
+.IP "Stopping check/prepare/idle/fork/async watchers: O(1)" 4
+.IX Item "Stopping check/prepare/idle/fork/async watchers: O(1)"
+.PD 0
+.IP "Stopping an io/signal/child watcher: O(number_of_watchers_for_this_(fd/signal/pid % \s-1EV_PID_HASHSIZE\s0))" 4
+.IX Item "Stopping an io/signal/child watcher: O(number_of_watchers_for_this_(fd/signal/pid % EV_PID_HASHSIZE))"
+.PD
+These watchers are stored in lists then need to be walked to find the
+correct watcher to remove. The lists are usually short (you don't usually
+have many watchers waiting for the same fd or signal).
+.IP "Finding the next timer in each loop iteration: O(1)" 4
+.IX Item "Finding the next timer in each loop iteration: O(1)"
+By virtue of using a binary or 4\-heap, the next timer is always found at a
+fixed position in the storage array.
+.IP "Each change on a file descriptor per loop iteration: O(number_of_watchers_for_this_fd)" 4
+.IX Item "Each change on a file descriptor per loop iteration: O(number_of_watchers_for_this_fd)"
+A change means an I/O watcher gets started or stopped, which requires
+libev to recalculate its status (and possibly tell the kernel, depending
+on backend and wether \f(CW\*(C`ev_io_set\*(C'\fR was used).
+.IP "Activating one watcher (putting it into the pending state): O(1)" 4
+.IX Item "Activating one watcher (putting it into the pending state): O(1)"
+.PD 0
+.IP "Priority handling: O(number_of_priorities)" 4
+.IX Item "Priority handling: O(number_of_priorities)"
+.PD
+Priorities are implemented by allocating some space for each
+priority. When doing priority-based operations, libev usually has to
+linearly search all the priorities, but starting/stopping and activating
+watchers becomes O(1) w.r.t. priority handling.
+.IP "Sending an ev_async: O(1)" 4
+.IX Item "Sending an ev_async: O(1)"
+.PD 0
+.IP "Processing ev_async_send: O(number_of_async_watchers)" 4
+.IX Item "Processing ev_async_send: O(number_of_async_watchers)"
+.IP "Processing signals: O(max_signal_number)" 4
+.IX Item "Processing signals: O(max_signal_number)"
+.PD
+Sending involves a syscall \fIiff\fR there were no other \f(CW\*(C`ev_async_send\*(C'\fR
+calls in the current loop iteration. Checking for async and signal events
+involves iterating over all running async watchers or all signal numbers.
+.SH "Win32 platform limitations and workarounds"
+.IX Header "Win32 platform limitations and workarounds"
+Win32 doesn't support any of the standards (e.g. \s-1POSIX\s0) that libev
+requires, and its I/O model is fundamentally incompatible with the \s-1POSIX\s0
+model. Libev still offers limited functionality on this platform in
+the form of the \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR backend, and only supports socket
+descriptors. This only applies when using Win32 natively, not when using
+e.g. cygwin.
+.PP
+Lifting these limitations would basically require the full
+re-implementation of the I/O system. If you are into these kinds of
+things, then note that glib does exactly that for you in a very portable
+way (note also that glib is the slowest event library known to man).
+.PP
+There is no supported compilation method available on windows except
+embedding it into other applications.
+.PP
+Due to the many, low, and arbitrary limits on the win32 platform and
+the abysmal performance of winsockets, using a large number of sockets
+is not recommended (and not reasonable). If your program needs to use
+more than a hundred or so sockets, then likely it needs to use a totally
+different implementation for windows, as libev offers the \s-1POSIX\s0 readyness
+notification model, which cannot be implemented efficiently on windows
+(microsoft monopoly games).
+.IP "The winsocket select function" 4
+.IX Item "The winsocket select function"
+The winsocket \f(CW\*(C`select\*(C'\fR function doesn't follow \s-1POSIX\s0 in that it requires
+socket \fIhandles\fR and not socket \fIfile descriptors\fR. This makes select
+very inefficient, and also requires a mapping from file descriptors
+to socket handles. See the discussion of the \f(CW\*(C`EV_SELECT_USE_FD_SET\*(C'\fR,
+\&\f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR and \f(CW\*(C`EV_FD_TO_WIN32_HANDLE\*(C'\fR preprocessor
+symbols for more info.
+.Sp
+The configuration for a \*(L"naked\*(R" win32 using the microsoft runtime
+libraries and raw winsocket select is:
+.Sp
+.Vb 2
+\& #define EV_USE_SELECT 1
+\& #define EV_SELECT_IS_WINSOCKET 1 /* forces EV_SELECT_USE_FD_SET, too */
+.Ve
+.Sp
+Note that winsockets handling of fd sets is O(n), so you can easily get a
+complexity in the O(nA\*^X) range when using win32.
+.IP "Limited number of file descriptors" 4
+.IX Item "Limited number of file descriptors"
+Windows has numerous arbitrary (and low) limits on things.
+.Sp
+Early versions of winsocket's select only supported waiting for a maximum
+of \f(CW64\fR handles (probably owning to the fact that all windows kernels
+can only wait for \f(CW64\fR things at the same time internally; microsoft
+recommends spawning a chain of threads and wait for 63 handles and the
+previous thread in each. Great).
+.Sp
+Newer versions support more handles, but you need to define \f(CW\*(C`FD_SETSIZE\*(C'\fR
+to some high number (e.g. \f(CW2048\fR) before compiling the winsocket select
+call (which might be in libev or elsewhere, for example, perl does its own
+select emulation on windows).
+.Sp
+Another limit is the number of file descriptors in the microsoft runtime
+libraries, which by default is \f(CW64\fR (there must be a hidden \fI64\fR fetish
+or something like this inside microsoft). You can increase this by calling
+\&\f(CW\*(C`_setmaxstdio\*(C'\fR, which can increase this limit to \f(CW2048\fR (another
+arbitrary limit), but is broken in many versions of the microsoft runtime
+libraries.
+.Sp
+This might get you to about \f(CW512\fR or \f(CW2048\fR sockets (depending on
+windows version and/or the phase of the moon). To get more, you need to
+wrap all I/O functions and provide your own fd management, but the cost of
+calling select (O(nA\*^X)) will likely make this unworkable.
+.SH "PORTABILITY REQUIREMENTS"
+.IX Header "PORTABILITY REQUIREMENTS"
+In addition to a working ISO-C implementation, libev relies on a few
+additional extensions:
+.ie n .IP """sig_atomic_t volatile"" must be thread-atomic as well" 4
+.el .IP "\f(CWsig_atomic_t volatile\fR must be thread-atomic as well" 4
+.IX Item "sig_atomic_t volatile must be thread-atomic as well"
+The type \f(CW\*(C`sig_atomic_t volatile\*(C'\fR (or whatever is defined as
+\&\f(CW\*(C`EV_ATOMIC_T\*(C'\fR) must be atomic w.r.t. accesses from different
+threads. This is not part of the specification for \f(CW\*(C`sig_atomic_t\*(C'\fR, but is
+believed to be sufficiently portable.
+.ie n .IP """sigprocmask"" must work in a threaded environment" 4
+.el .IP "\f(CWsigprocmask\fR must work in a threaded environment" 4
+.IX Item "sigprocmask must work in a threaded environment"
+Libev uses \f(CW\*(C`sigprocmask\*(C'\fR to temporarily block signals. This is not
+allowed in a threaded program (\f(CW\*(C`pthread_sigmask\*(C'\fR has to be used). Typical
+pthread implementations will either allow \f(CW\*(C`sigprocmask\*(C'\fR in the \*(L"main
+thread\*(R" or will block signals process-wide, both behaviours would
+be compatible with libev. Interaction between \f(CW\*(C`sigprocmask\*(C'\fR and
+\&\f(CW\*(C`pthread_sigmask\*(C'\fR could complicate things, however.
+.Sp
+The most portable way to handle signals is to block signals in all threads
+except the initial one, and run the default loop in the initial thread as
+well.
+.ie n .IP """long"" must be large enough for common memory allocation sizes" 4
+.el .IP "\f(CWlong\fR must be large enough for common memory allocation sizes" 4
+.IX Item "long must be large enough for common memory allocation sizes"
+To improve portability and simplify using libev, libev uses \f(CW\*(C`long\*(C'\fR
+internally instead of \f(CW\*(C`size_t\*(C'\fR when allocating its data structures. On
+non-POSIX systems (Microsoft...) this might be unexpectedly low, but
+is still at least 31 bits everywhere, which is enough for hundreds of
+millions of watchers.
+.ie n .IP """double"" must hold a time value in seconds with enough accuracy" 4
+.el .IP "\f(CWdouble\fR must hold a time value in seconds with enough accuracy" 4
+.IX Item "double must hold a time value in seconds with enough accuracy"
+The type \f(CW\*(C`double\*(C'\fR is used to represent timestamps. It is required to
+have at least 51 bits of mantissa (and 9 bits of exponent), which is good
+enough for at least into the year 4000. This requirement is fulfilled by
+implementations implementing \s-1IEEE\s0 754 (basically all existing ones).
+.PP
+If you know of other additional requirements drop me a note.
+.SH "AUTHOR"
+.IX Header "AUTHOR"
+Marc Lehmann <libev@schmorp.de>.
+.SH "POD ERRORS"
+.IX Header "POD ERRORS"
+Hey! \fBThe above document had some coding errors, which are explained below:\fR
+.IP "Around line 3052:" 4
+.IX Item "Around line 3052:"
+You forgot a '=back' before '=head2'
--- /dev/null
+/*
+ * libeio implementation
+ *
+ * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libeio@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#include "eio.h"
+
+#ifdef EIO_STACKSIZE
+# define XTHREAD_STACKSIZE EIO_STACKSIZE
+#endif
+
+// For statically-linked pthreads-w32, use:
+// #ifdef _WIN32
+// # define PTW32_STATIC_LIB 1
+// #endif
+#include "xthread.h"
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <limits.h>
+#include <fcntl.h>
+#include <assert.h>
+
+#ifndef _WIN32
+#include <sys/statvfs.h>
+#endif
+
+#ifndef EIO_FINISH
+# define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0
+#endif
+
+#ifndef EIO_DESTROY
+# define EIO_DESTROY(req) do { if ((req)->destroy) (req)->destroy (req); } while (0)
+#endif
+
+#ifndef EIO_FEED
+# define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0)
+#endif
+
+#ifdef _WIN32
+
+# include <errno.h>
+# include <sys/time.h>
+# include <unistd.h>
+# include <utime.h>
+# include <signal.h>
+# include <dirent.h>
+# include <windows.h>
+
+# define ENOTSOCK WSAENOTSOCK
+# define EOPNOTSUPP WSAEOPNOTSUPP
+# define ECANCELED 140
+
+# ifndef EIO_STRUCT_DIRENT
+# define EIO_STRUCT_DIRENT struct dirent
+# endif
+
+#else
+
+# ifdef EIO_CONFIG_H
+# include EIO_CONFIG_H
+# else
+# include "config.h"
+# endif
+
+# include <sys/time.h>
+# include <sys/select.h>
+# include <unistd.h>
+# include <utime.h>
+# include <signal.h>
+# include <dirent.h>
+
+#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
+# include <sys/mman.h>
+#endif
+
+/* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */
+# if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__
+# define _DIRENT_HAVE_D_TYPE /* sigh */
+# define D_INO(de) (de)->d_fileno
+# define D_NAMLEN(de) (de)->d_namlen
+# elif __linux || defined d_ino || _XOPEN_SOURCE >= 600
+# define D_INO(de) (de)->d_ino
+# endif
+
+#ifdef _D_EXACT_NAMLEN
+# undef D_NAMLEN
+# define D_NAMLEN(de) _D_EXACT_NAMLEN (de)
+#endif
+
+# ifdef _DIRENT_HAVE_D_TYPE
+# define D_TYPE(de) (de)->d_type
+# endif
+
+# ifndef EIO_STRUCT_DIRENT
+# define EIO_STRUCT_DIRENT struct dirent
+# endif
+
+#endif
+
+#if HAVE_SENDFILE
+# if __linux
+# include <sys/sendfile.h>
+# elif __FreeBSD__ || defined __APPLE__
+# include <sys/socket.h>
+# include <sys/uio.h>
+# elif __hpux
+# include <sys/socket.h>
+# elif __solaris
+# include <sys/sendfile.h>
+# else
+# error sendfile support requested but not available
+# endif
+#endif
+
+#ifndef D_TYPE
+# define D_TYPE(de) 0
+#endif
+#ifndef D_INO
+# define D_INO(de) 0
+#endif
+#ifndef D_NAMLEN
+# define D_NAMLEN(de) strlen ((de)->d_name)
+#endif
+
+/* number of seconds after which an idle threads exit */
+#define IDLE_TIMEOUT 10
+
+/* used for struct dirent, AIX doesn't provide it */
+#ifndef NAME_MAX
+# define NAME_MAX 4096
+#endif
+
+/* used for readlink etc. */
+#ifndef PATH_MAX
+# define PATH_MAX 4096
+#endif
+
+/* buffer size for various temporary buffers */
+#define EIO_BUFSIZE 65536
+
+#define dBUF \
+ char *eio_buf; \
+ ETP_WORKER_LOCK (self); \
+ self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \
+ ETP_WORKER_UNLOCK (self); \
+ errno = ENOMEM; \
+ if (!eio_buf) \
+ return -1;
+
+#define EIO_TICKS ((1000000 + 1023) >> 10)
+
+/*****************************************************************************/
+
+#if __GNUC__ >= 3
+# define expect(expr,value) __builtin_expect ((expr),(value))
+#else
+# define expect(expr,value) (expr)
+#endif
+
+#define expect_false(expr) expect ((expr) != 0, 0)
+#define expect_true(expr) expect ((expr) != 0, 1)
+
+/*****************************************************************************/
+
+#define ETP_PRI_MIN EIO_PRI_MIN
+#define ETP_PRI_MAX EIO_PRI_MAX
+
+struct etp_worker;
+
+#define ETP_REQ eio_req
+#define ETP_DESTROY(req) eio_destroy (req)
+static int eio_finish (eio_req *req);
+#define ETP_FINISH(req) eio_finish (req)
+static void eio_execute (struct etp_worker *self, eio_req *req);
+#define ETP_EXECUTE(wrk,req) eio_execute (wrk,req)
+
+#define ETP_WORKER_CLEAR(req) \
+ if (wrk->dbuf) \
+ { \
+ free (wrk->dbuf); \
+ wrk->dbuf = 0; \
+ } \
+ \
+ if (wrk->dirp) \
+ { \
+ closedir (wrk->dirp); \
+ wrk->dirp = 0; \
+ }
+
+#define ETP_WORKER_COMMON \
+ void *dbuf; \
+ DIR *dirp;
+
+/*****************************************************************************/
+
+#define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1)
+
+/* calculate time difference in ~1/EIO_TICKS of a second */
+static int tvdiff (struct timeval *tv1, struct timeval *tv2)
+{
+ return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS
+ + ((tv2->tv_usec - tv1->tv_usec) >> 10);
+}
+
+static unsigned int started, idle, wanted = 4;
+
+static void (*want_poll_cb) (void);
+static void (*done_poll_cb) (void);
+
+static unsigned int max_poll_time; /* reslock */
+static unsigned int max_poll_reqs; /* reslock */
+
+static volatile unsigned int nreqs; /* reqlock */
+static volatile unsigned int nready; /* reqlock */
+static volatile unsigned int npending; /* reqlock */
+static volatile unsigned int max_idle = 4;
+
+static xmutex_t wrklock = X_MUTEX_INIT;
+static xmutex_t reslock = X_MUTEX_INIT;
+static xmutex_t reqlock = X_MUTEX_INIT;
+static xcond_t reqwait = X_COND_INIT;
+
+#if defined (__APPLE__)
+static xmutex_t apple_bug_writelock = X_MUTEX_INIT;
+#endif
+
+#if !HAVE_PREADWRITE
+/*
+ * make our pread/pwrite emulation safe against themselves, but not against
+ * normal read/write by using a mutex. slows down execution a lot,
+ * but that's your problem, not mine.
+ */
+static xmutex_t preadwritelock = X_MUTEX_INIT;
+#endif
+
+typedef struct etp_worker
+{
+ /* locked by wrklock */
+ struct etp_worker *prev, *next;
+
+ xthread_t tid;
+
+ /* locked by reslock, reqlock or wrklock */
+ ETP_REQ *req; /* currently processed request */
+
+ ETP_WORKER_COMMON
+} etp_worker;
+
+static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */
+
+#define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock)
+#define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock)
+
+/* worker threads management */
+
+static void etp_worker_clear (etp_worker *wrk)
+{
+ ETP_WORKER_CLEAR (wrk);
+}
+
+static void etp_worker_free (etp_worker *wrk)
+{
+ wrk->next->prev = wrk->prev;
+ wrk->prev->next = wrk->next;
+
+ free (wrk);
+}
+
+static unsigned int etp_nreqs (void)
+{
+ int retval;
+ if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
+ retval = nreqs;
+ if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
+ return retval;
+}
+
+static unsigned int etp_nready (void)
+{
+ unsigned int retval;
+
+ if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
+ retval = nready;
+ if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
+
+ return retval;
+}
+
+static unsigned int etp_npending (void)
+{
+ unsigned int retval;
+
+ if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
+ retval = npending;
+ if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
+
+ return retval;
+}
+
+static unsigned int etp_nthreads (void)
+{
+ unsigned int retval;
+
+ if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
+ retval = started;
+ if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
+
+ return retval;
+}
+
+/*
+ * a somewhat faster data structure might be nice, but
+ * with 8 priorities this actually needs <20 insns
+ * per shift, the most expensive operation.
+ */
+typedef struct {
+ ETP_REQ *qs[ETP_NUM_PRI], *qe[ETP_NUM_PRI]; /* qstart, qend */
+ int size;
+} etp_reqq;
+
+static etp_reqq req_queue;
+static etp_reqq res_queue;
+
+static int reqq_push (etp_reqq *q, ETP_REQ *req)
+{
+ int pri = req->pri;
+ req->next = 0;
+
+ if (q->qe[pri])
+ {
+ q->qe[pri]->next = req;
+ q->qe[pri] = req;
+ }
+ else
+ q->qe[pri] = q->qs[pri] = req;
+
+ return q->size++;
+}
+
+static ETP_REQ *reqq_shift (etp_reqq *q)
+{
+ int pri;
+
+ if (!q->size)
+ return 0;
+
+ --q->size;
+
+ for (pri = ETP_NUM_PRI; pri--; )
+ {
+ eio_req *req = q->qs[pri];
+
+ if (req)
+ {
+ if (!(q->qs[pri] = (eio_req *)req->next))
+ q->qe[pri] = 0;
+
+ return req;
+ }
+ }
+
+ abort ();
+}
+
+static void etp_atfork_prepare (void)
+{
+ X_LOCK (wrklock);
+ X_LOCK (reqlock);
+ X_LOCK (reslock);
+#if !HAVE_PREADWRITE
+ X_LOCK (preadwritelock);
+#endif
+}
+
+static void etp_atfork_parent (void)
+{
+#if !HAVE_PREADWRITE
+ X_UNLOCK (preadwritelock);
+#endif
+ X_UNLOCK (reslock);
+ X_UNLOCK (reqlock);
+ X_UNLOCK (wrklock);
+}
+
+static void etp_atfork_child (void)
+{
+ ETP_REQ *prv;
+
+ while ((prv = reqq_shift (&req_queue)))
+ ETP_DESTROY (prv);
+
+ while ((prv = reqq_shift (&res_queue)))
+ ETP_DESTROY (prv);
+
+ while (wrk_first.next != &wrk_first)
+ {
+ etp_worker *wrk = wrk_first.next;
+
+ if (wrk->req)
+ ETP_DESTROY (wrk->req);
+
+ etp_worker_clear (wrk);
+ etp_worker_free (wrk);
+ }
+
+ started = 0;
+ idle = 0;
+ nreqs = 0;
+ nready = 0;
+ npending = 0;
+
+ etp_atfork_parent ();
+}
+
+static void
+etp_once_init (void)
+{
+ X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child);
+}
+
+static int
+etp_init (void (*want_poll)(void), void (*done_poll)(void))
+{
+ static pthread_once_t doinit = PTHREAD_ONCE_INIT;
+
+ pthread_once (&doinit, etp_once_init);
+
+ want_poll_cb = want_poll;
+ done_poll_cb = done_poll;
+
+ return 0;
+}
+
+X_THREAD_PROC (etp_proc);
+
+static void etp_start_thread (void)
+{
+ etp_worker *wrk = calloc (1, sizeof (etp_worker));
+
+ /*TODO*/
+ assert (("unable to allocate worker thread data", wrk));
+
+ X_LOCK (wrklock);
+
+ if (thread_create (&wrk->tid, etp_proc, (void *)wrk))
+ {
+ wrk->prev = &wrk_first;
+ wrk->next = wrk_first.next;
+ wrk_first.next->prev = wrk;
+ wrk_first.next = wrk;
+ ++started;
+ }
+ else
+ free (wrk);
+
+ X_UNLOCK (wrklock);
+}
+
+static void etp_maybe_start_thread (void)
+{
+ if (expect_true (etp_nthreads () >= wanted))
+ return;
+
+ /* todo: maybe use idle here, but might be less exact */
+ if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()))
+ return;
+
+ etp_start_thread ();
+}
+
+static void etp_end_thread (void)
+{
+ eio_req *req = calloc (1, sizeof (eio_req));
+
+ req->type = -1;
+ req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
+
+ X_LOCK (reqlock);
+ reqq_push (&req_queue, req);
+ X_COND_SIGNAL (reqwait);
+ X_UNLOCK (reqlock);
+
+ X_LOCK (wrklock);
+ --started;
+ X_UNLOCK (wrklock);
+}
+
+static int etp_poll (void)
+{
+ unsigned int maxreqs;
+ unsigned int maxtime;
+ struct timeval tv_start, tv_now;
+
+ X_LOCK (reslock);
+ maxreqs = max_poll_reqs;
+ maxtime = max_poll_time;
+ X_UNLOCK (reslock);
+
+ if (maxtime)
+ gettimeofday (&tv_start, 0);
+
+ for (;;)
+ {
+ ETP_REQ *req;
+
+ etp_maybe_start_thread ();
+
+ X_LOCK (reslock);
+ req = reqq_shift (&res_queue);
+
+ if (req)
+ {
+ --npending;
+
+ if (!res_queue.size && done_poll_cb)
+ done_poll_cb ();
+ }
+
+ X_UNLOCK (reslock);
+
+ if (!req)
+ return 0;
+
+ X_LOCK (reqlock);
+ --nreqs;
+ X_UNLOCK (reqlock);
+
+ if (expect_false (req->type == EIO_GROUP && req->size))
+ {
+ req->int1 = 1; /* mark request as delayed */
+ continue;
+ }
+ else
+ {
+ int res = ETP_FINISH (req);
+ if (expect_false (res))
+ return res;
+ }
+
+ if (expect_false (maxreqs && !--maxreqs))
+ break;
+
+ if (maxtime)
+ {
+ gettimeofday (&tv_now, 0);
+
+ if (tvdiff (&tv_start, &tv_now) >= maxtime)
+ break;
+ }
+ }
+
+ errno = EAGAIN;
+ return -1;
+}
+
+static void etp_cancel (ETP_REQ *req)
+{
+ X_LOCK (wrklock);
+ req->flags |= EIO_FLAG_CANCELLED;
+ X_UNLOCK (wrklock);
+
+ eio_grp_cancel (req);
+}
+
+static void etp_submit (ETP_REQ *req)
+{
+ req->pri -= ETP_PRI_MIN;
+
+ if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN;
+ if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN;
+
+ if (expect_false (req->type == EIO_GROUP))
+ {
+ /* I hope this is worth it :/ */
+ X_LOCK (reqlock);
+ ++nreqs;
+ X_UNLOCK (reqlock);
+
+ X_LOCK (reslock);
+
+ ++npending;
+
+ if (!reqq_push (&res_queue, req) && want_poll_cb)
+ want_poll_cb ();
+
+ X_UNLOCK (reslock);
+ }
+ else
+ {
+ X_LOCK (reqlock);
+ ++nreqs;
+ ++nready;
+ reqq_push (&req_queue, req);
+ X_COND_SIGNAL (reqwait);
+ X_UNLOCK (reqlock);
+
+ etp_maybe_start_thread ();
+ }
+}
+
+static void etp_set_max_poll_time (double nseconds)
+{
+ if (WORDACCESS_UNSAFE) X_LOCK (reslock);
+ max_poll_time = nseconds * EIO_TICKS;
+ if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
+}
+
+static void etp_set_max_poll_reqs (unsigned int maxreqs)
+{
+ if (WORDACCESS_UNSAFE) X_LOCK (reslock);
+ max_poll_reqs = maxreqs;
+ if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
+}
+
+static void etp_set_max_idle (unsigned int nthreads)
+{
+ if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
+ max_idle = nthreads <= 0 ? 1 : nthreads;
+ if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
+}
+
+static void etp_set_min_parallel (unsigned int nthreads)
+{
+ if (wanted < nthreads)
+ wanted = nthreads;
+}
+
+static void etp_set_max_parallel (unsigned int nthreads)
+{
+ if (wanted > nthreads)
+ wanted = nthreads;
+
+ while (started > wanted)
+ etp_end_thread ();
+}
+
+/*****************************************************************************/
+
+static void grp_try_feed (eio_req *grp)
+{
+ while (grp->size < grp->int2 && !EIO_CANCELLED (grp))
+ {
+ grp->flags &= ~EIO_FLAG_GROUPADD;
+
+ EIO_FEED (grp);
+
+ /* stop if no progress has been made */
+ if (!(grp->flags & EIO_FLAG_GROUPADD))
+ {
+ grp->feed = 0;
+ break;
+ }
+ }
+}
+
+static int grp_dec (eio_req *grp)
+{
+ --grp->size;
+
+ /* call feeder, if applicable */
+ grp_try_feed (grp);
+
+ /* finish, if done */
+ if (!grp->size && grp->int1)
+ return eio_finish (grp);
+ else
+ return 0;
+}
+
+void eio_destroy (eio_req *req)
+{
+ if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1);
+ if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2);
+
+ EIO_DESTROY (req);
+}
+
+static int eio_finish (eio_req *req)
+{
+ int res = EIO_FINISH (req);
+
+ if (req->grp)
+ {
+ int res2;
+ eio_req *grp = req->grp;
+
+ /* unlink request */
+ if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
+ if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
+
+ if (grp->grp_first == req)
+ grp->grp_first = req->grp_next;
+
+ res2 = grp_dec (grp);
+
+ if (!res && res2)
+ res = res2;
+ }
+
+ eio_destroy (req);
+
+ return res;
+}
+
+void eio_grp_cancel (eio_req *grp)
+{
+ for (grp = grp->grp_first; grp; grp = grp->grp_next)
+ eio_cancel (grp);
+}
+
+void eio_cancel (eio_req *req)
+{
+ etp_cancel (req);
+}
+
+void eio_submit (eio_req *req)
+{
+ etp_submit (req);
+}
+
+unsigned int eio_nreqs (void)
+{
+ return etp_nreqs ();
+}
+
+unsigned int eio_nready (void)
+{
+ return etp_nready ();
+}
+
+unsigned int eio_npending (void)
+{
+ return etp_npending ();
+}
+
+unsigned int eio_nthreads (void)
+{
+ return etp_nthreads ();
+}
+
+void eio_set_max_poll_time (double nseconds)
+{
+ etp_set_max_poll_time (nseconds);
+}
+
+void eio_set_max_poll_reqs (unsigned int maxreqs)
+{
+ etp_set_max_poll_reqs (maxreqs);
+}
+
+void eio_set_max_idle (unsigned int nthreads)
+{
+ etp_set_max_idle (nthreads);
+}
+
+void eio_set_min_parallel (unsigned int nthreads)
+{
+ etp_set_min_parallel (nthreads);
+}
+
+void eio_set_max_parallel (unsigned int nthreads)
+{
+ etp_set_max_parallel (nthreads);
+}
+
+int eio_poll (void)
+{
+ return etp_poll ();
+}
+
+/*****************************************************************************/
+/* work around various missing functions */
+
+#if !HAVE_PREADWRITE
+# undef pread
+# undef pwrite
+# define pread eio__pread
+# define pwrite eio__pwrite
+
+ssize_t
+eio__pread (int fd, void *buf, size_t count, off_t offset)
+{
+ ssize_t res;
+ off_t ooffset;
+
+ X_LOCK (preadwritelock);
+ ooffset = lseek (fd, 0, SEEK_CUR);
+ lseek (fd, offset, SEEK_SET);
+ res = read (fd, buf, count);
+ lseek (fd, ooffset, SEEK_SET);
+ X_UNLOCK (preadwritelock);
+
+ return res;
+}
+
+ssize_t
+eio__pwrite (int fd, void *buf, size_t count, off_t offset)
+{
+ ssize_t res;
+ off_t ooffset;
+
+ X_LOCK (preadwritelock);
+ ooffset = lseek (fd, 0, SEEK_CUR);
+ lseek (fd, offset, SEEK_SET);
+ res = write (fd, buf, count);
+ lseek (fd, ooffset, SEEK_SET);
+ X_UNLOCK (preadwritelock);
+
+ return res;
+}
+#endif
+
+#ifndef HAVE_UTIMES
+
+# undef utimes
+# define utimes(path,times) eio__utimes (path, times)
+
+static int
+eio__utimes (const char *filename, const struct timeval times[2])
+{
+ if (times)
+ {
+ struct utimbuf buf;
+
+ buf.actime = times[0].tv_sec;
+ buf.modtime = times[1].tv_sec;
+
+ return utime (filename, &buf);
+ }
+ else
+ return utime (filename, 0);
+}
+
+#endif
+
+#ifndef HAVE_FUTIMES
+
+# undef futimes
+# define futimes(fd,times) eio__futimes (fd, times)
+
+static int eio__futimes (int fd, const struct timeval tv[2])
+{
+ errno = ENOSYS;
+ return -1;
+}
+
+#endif
+
+#ifdef _WIN32
+# define fsync(fd) (FlushFileBuffers((HANDLE)_get_osfhandle(fd)) ? 0 : -1)
+#endif
+
+#if !HAVE_FDATASYNC
+# undef fdatasync
+# define fdatasync(fd) fsync (fd)
+#endif
+
+// Use unicode and big file aware stat on windows
+#ifdef _WIN32
+# undef stat
+# undef fstat
+# define stat _stati64
+# define fstat _fstati64
+#endif
+
+/* sync_file_range always needs emulation */
+int
+eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags)
+{
+#if HAVE_SYNC_FILE_RANGE
+ int res;
+
+ if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE
+ || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE
+ || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER)
+ {
+ flags = 0
+ | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0)
+ | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0)
+ | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0);
+ }
+
+ res = sync_file_range (fd, offset, nbytes, flags);
+
+ if (!res || errno != ENOSYS)
+ return res;
+#endif
+
+ /* even though we could play tricks with the flags, it's better to always
+ * call fdatasync, as that matches the expectation of its users best */
+ return fdatasync (fd);
+}
+
+#if !HAVE_READAHEAD
+# undef readahead
+# define readahead(fd,offset,count) eio__readahead (fd, offset, count, self)
+
+static ssize_t
+eio__readahead (int fd, off_t offset, size_t count, etp_worker *self)
+{
+ size_t todo = count;
+ dBUF;
+
+ while (todo > 0)
+ {
+ size_t len = todo < EIO_BUFSIZE ? todo : EIO_BUFSIZE;
+
+ pread (fd, eio_buf, len, offset);
+ offset += len;
+ todo -= len;
+ }
+
+ errno = 0;
+ return count;
+}
+
+#endif
+
+/* sendfile always needs emulation */
+static ssize_t
+eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self)
+{
+ ssize_t res;
+
+ if (!count)
+ return 0;
+
+#if HAVE_SENDFILE
+# if __linux
+ res = sendfile (ofd, ifd, &offset, count);
+
+# elif __FreeBSD__
+ /*
+ * Of course, the freebsd sendfile is a dire hack with no thoughts
+ * wasted on making it similar to other I/O functions.
+ */
+ {
+ off_t sbytes;
+ res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
+
+ #if 0 /* according to the manpage, this is correct, but broken behaviour */
+ /* freebsd' sendfile will return 0 on success */
+ /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */
+ /* not on e.g. EIO or EPIPE - sounds broken */
+ if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0)
+ res = sbytes;
+ #endif
+
+ /* according to source inspection, this is correct, and useful behaviour */
+ if (sbytes)
+ res = sbytes;
+ }
+
+# elif defined (__APPLE__)
+
+ {
+ off_t sbytes = count;
+ res = sendfile (ifd, ofd, offset, &sbytes, 0, 0);
+
+ /* according to the manpage, sbytes is always valid */
+ if (sbytes)
+ res = sbytes;
+ }
+
+# elif __hpux
+ res = sendfile (ofd, ifd, offset, count, 0, 0);
+
+# elif __solaris
+ {
+ struct sendfilevec vec;
+ size_t sbytes;
+
+ vec.sfv_fd = ifd;
+ vec.sfv_flag = 0;
+ vec.sfv_off = offset;
+ vec.sfv_len = count;
+
+ res = sendfilev (ofd, &vec, 1, &sbytes);
+
+ if (res < 0 && sbytes)
+ res = sbytes;
+ }
+
+# endif
+
+//#elif defined (_WIN32)
+//
+// /* does not work, just for documentation of what would need to be done */
+// {
+// HANDLE h = TO_SOCKET (ifd);
+// SetFilePointer (h, offset, 0, FILE_BEGIN);
+// res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0);
+// }
+
+#else
+ res = -1;
+ errno = ENOSYS;
+#endif
+
+ if (res < 0
+ && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
+ /* BSDs */
+#ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */
+ || errno == ENOTSUP
+#endif
+ || errno == EOPNOTSUPP /* BSDs */
+#if __solaris
+ || errno == EAFNOSUPPORT || errno == EPROTOTYPE
+#endif
+ )
+ )
+ {
+ /* emulate sendfile. this is a major pain in the ass */
+ dBUF;
+
+ res = 0;
+
+ while (count)
+ {
+ ssize_t cnt;
+
+ cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset);
+
+ if (cnt <= 0)
+ {
+ if (cnt && !res) res = -1;
+ break;
+ }
+
+ cnt = write (ofd, eio_buf, cnt);
+
+ if (cnt <= 0)
+ {
+ if (cnt && !res) res = -1;
+ break;
+ }
+
+ offset += cnt;
+ res += cnt;
+ count -= cnt;
+ }
+ }
+
+ return res;
+}
+
+static signed char
+eio_dent_cmp (const eio_dirent *a, const eio_dirent *b)
+{
+ return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */
+ : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0;
+}
+
+#define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0
+
+#define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */
+#define EIO_SORT_FAST 60 /* when to only use insertion sort */
+
+static void
+eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)
+{
+ unsigned char bits [9 + sizeof (ino_t) * 8];
+ unsigned char *bit = bits;
+
+ assert (CHAR_BIT == 8);
+ assert (sizeof (eio_dirent) * 8 < 256);
+ assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */
+ assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */
+
+ if (size <= EIO_SORT_FAST)
+ return;
+
+ /* first prepare an array of bits to test in our radix sort */
+ /* try to take endianness into account, as well as differences in ino_t sizes */
+ /* inode_bits must contain all inodes ORed together */
+ /* which is used to skip bits that are 0 everywhere, which is very common */
+ {
+ ino_t endianness;
+ int i, j;
+
+ /* we store the byte offset of byte n into byte n of "endianness" */
+ for (i = 0; i < sizeof (ino_t); ++i)
+ ((unsigned char *)&endianness)[i] = i;
+
+ *bit++ = 0;
+
+ for (i = 0; i < sizeof (ino_t); ++i)
+ {
+ /* shifting off the byte offsets out of "endianness" */
+ int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8;
+ endianness >>= 8;
+
+ for (j = 0; j < 8; ++j)
+ if (inode_bits & (((ino_t)1) << (i * 8 + j)))
+ *bit++ = offs + j;
+ }
+
+ for (j = 0; j < 8; ++j)
+ if (score_bits & (1 << j))
+ *bit++ = offsetof (eio_dirent, score) * 8 + j;
+ }
+
+ /* now actually do the sorting (a variant of MSD radix sort) */
+ {
+ eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base;
+ eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end;
+ unsigned char *bit_stk [9 + sizeof (ino_t) * 8];
+ int stk_idx = 0;
+
+ base_stk [stk_idx] = dents;
+ end_stk [stk_idx] = dents + size;
+ bit_stk [stk_idx] = bit - 1;
+
+ do
+ {
+ base = base_stk [stk_idx];
+ end = end_stk [stk_idx];
+ bit = bit_stk [stk_idx];
+
+ for (;;)
+ {
+ unsigned char O = *bit >> 3;
+ unsigned char M = 1 << (*bit & 7);
+
+ eio_dirent *a = base;
+ eio_dirent *b = end;
+
+ if (b - a < EIO_SORT_CUTOFF)
+ break;
+
+ /* now bit-partition the array on the bit */
+ /* this ugly asymmetric loop seems to perform much better than typical */
+ /* partition algos found in the literature */
+ do
+ if (!(((unsigned char *)a)[O] & M))
+ ++a;
+ else if (!(((unsigned char *)--b)[O] & M))
+ {
+ eio_dirent tmp = *a; *a = *b; *b = tmp;
+ ++a;
+ }
+ while (b > a);
+
+ /* next bit, or stop, if no bits left in this path */
+ if (!*--bit)
+ break;
+
+ base_stk [stk_idx] = a;
+ end_stk [stk_idx] = end;
+ bit_stk [stk_idx] = bit;
+ ++stk_idx;
+
+ end = a;
+ }
+ }
+ while (stk_idx--);
+ }
+}
+
+static void
+eio_dent_insertion_sort (eio_dirent *dents, int size)
+{
+ /* first move the smallest element to the front, to act as a sentinel */
+ {
+ int i;
+ eio_dirent *min = dents;
+
+ /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */
+ for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; )
+ if (EIO_DENT_CMP (dents [i], <, *min))
+ min = &dents [i];
+
+ /* swap elements 0 and j (minimum) */
+ {
+ eio_dirent tmp = *dents; *dents = *min; *min = tmp;
+ }
+ }
+
+ /* then do standard insertion sort, assuming that all elements are >= dents [0] */
+ {
+ eio_dirent *i, *j;
+
+ for (i = dents + 1; i < dents + size; ++i)
+ {
+ eio_dirent value = *i;
+
+ for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j)
+ j [1] = j [0];
+
+ j [1] = value;
+ }
+ }
+}
+
+static void
+eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits)
+{
+ if (size <= 1)
+ return; /* our insertion sort relies on size > 0 */
+
+ /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */
+ /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */
+ eio_dent_radix_sort (dents, size, score_bits, inode_bits);
+
+ /* use an insertion sort at the end, or for small arrays, */
+ /* as insertion sort is more efficient for small partitions */
+ eio_dent_insertion_sort (dents, size);
+}
+
+/* read a full directory */
+static void
+eio__scandir (eio_req *req, etp_worker *self)
+{
+ DIR *dirp;
+ EIO_STRUCT_DIRENT *entp;
+ char *name, *names;
+ int namesalloc = 4096;
+ int namesoffs = 0;
+ int flags = req->int1;
+ eio_dirent *dents = 0;
+ int dentalloc = 128;
+ int dentoffs = 0;
+ ino_t inode_bits = 0;
+
+ req->result = -1;
+
+ if (!(flags & EIO_READDIR_DENTS))
+ flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER);
+
+ X_LOCK (wrklock);
+ /* the corresponding closedir is in ETP_WORKER_CLEAR */
+ self->dirp = dirp = opendir (req->ptr1);
+ req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE;
+ req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0;
+ req->ptr2 = names = malloc (namesalloc);
+ X_UNLOCK (wrklock);
+
+ if (dirp && names && (!flags || dents))
+ for (;;)
+ {
+ errno = 0;
+ entp = readdir (dirp);
+
+ if (!entp)
+ {
+ if (errno)
+ break;
+
+ /* sort etc. */
+ req->int1 = flags;
+ req->result = dentoffs;
+
+ if (flags & EIO_READDIR_STAT_ORDER)
+ eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */
+ else if (flags & EIO_READDIR_DIRS_FIRST)
+ if (flags & EIO_READDIR_FOUND_UNKNOWN)
+ eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */
+ else
+ {
+ /* in this case, all is known, and we just put dirs first and sort them */
+ eio_dirent *oth = dents + dentoffs;
+ eio_dirent *dir = dents;
+
+ /* now partition dirs to the front, and non-dirs to the back */
+ /* by walking from both sides and swapping if necessary */
+ /* also clear score, so it doesn't influence sorting */
+ while (oth > dir)
+ {
+ if (dir->type == EIO_DT_DIR)
+ ++dir;
+ else if ((--oth)->type == EIO_DT_DIR)
+ {
+ eio_dirent tmp = *dir; *dir = *oth; *oth = tmp;
+
+ ++dir;
+ }
+ }
+
+ /* now sort the dirs only */
+ eio_dent_sort (dents, dir - dents, 0, inode_bits);
+ }
+
+ break;
+ }
+
+ /* now add the entry to our list(s) */
+ name = entp->d_name;
+
+ /* skip . and .. entries */
+ if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
+ {
+ int len = D_NAMLEN (entp) + 1;
+
+ while (expect_false (namesoffs + len > namesalloc))
+ {
+ namesalloc *= 2;
+ X_LOCK (wrklock);
+ req->ptr2 = names = realloc (names, namesalloc);
+ X_UNLOCK (wrklock);
+
+ if (!names)
+ break;
+ }
+
+ memcpy (names + namesoffs, name, len);
+
+ if (dents)
+ {
+ struct eio_dirent *ent;
+
+ if (expect_false (dentoffs == dentalloc))
+ {
+ dentalloc *= 2;
+ X_LOCK (wrklock);
+ req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent));
+ X_UNLOCK (wrklock);
+
+ if (!dents)
+ break;
+ }
+
+ ent = dents + dentoffs;
+
+ ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */
+ ent->namelen = len - 1;
+ ent->inode = D_INO (entp);
+
+ inode_bits |= ent->inode;
+
+ switch (D_TYPE (entp))
+ {
+ default:
+ ent->type = EIO_DT_UNKNOWN;
+ flags |= EIO_READDIR_FOUND_UNKNOWN;
+ break;
+
+ #ifdef DT_FIFO
+ case DT_FIFO: ent->type = EIO_DT_FIFO; break;
+ #endif
+ #ifdef DT_CHR
+ case DT_CHR: ent->type = EIO_DT_CHR; break;
+ #endif
+ #ifdef DT_MPC
+ case DT_MPC: ent->type = EIO_DT_MPC; break;
+ #endif
+ #ifdef DT_DIR
+ case DT_DIR: ent->type = EIO_DT_DIR; break;
+ #endif
+ #ifdef DT_NAM
+ case DT_NAM: ent->type = EIO_DT_NAM; break;
+ #endif
+ #ifdef DT_BLK
+ case DT_BLK: ent->type = EIO_DT_BLK; break;
+ #endif
+ #ifdef DT_MPB
+ case DT_MPB: ent->type = EIO_DT_MPB; break;
+ #endif
+ #ifdef DT_REG
+ case DT_REG: ent->type = EIO_DT_REG; break;
+ #endif
+ #ifdef DT_NWK
+ case DT_NWK: ent->type = EIO_DT_NWK; break;
+ #endif
+ #ifdef DT_CMP
+ case DT_CMP: ent->type = EIO_DT_CMP; break;
+ #endif
+ #ifdef DT_LNK
+ case DT_LNK: ent->type = EIO_DT_LNK; break;
+ #endif
+ #ifdef DT_SOCK
+ case DT_SOCK: ent->type = EIO_DT_SOCK; break;
+ #endif
+ #ifdef DT_DOOR
+ case DT_DOOR: ent->type = EIO_DT_DOOR; break;
+ #endif
+ #ifdef DT_WHT
+ case DT_WHT: ent->type = EIO_DT_WHT; break;
+ #endif
+ }
+
+ ent->score = 7;
+
+ if (flags & EIO_READDIR_DIRS_FIRST)
+ {
+ if (ent->type == EIO_DT_UNKNOWN)
+ {
+ if (*name == '.') /* leading dots are likely directories, and, in any case, rare */
+ ent->score = 1;
+ else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */
+ ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */
+ }
+ else if (ent->type == EIO_DT_DIR)
+ ent->score = 0;
+ }
+ }
+
+ namesoffs += len;
+ ++dentoffs;
+ }
+
+ if (EIO_CANCELLED (req))
+ {
+ errno = ECANCELED;
+ break;
+ }
+ }
+}
+
+#ifdef PAGESIZE
+# define eio_pagesize() PAGESIZE
+
+#elif defined(_WIN32)
+ /* Windows */
+ static intptr_t
+ eio_pagesize (void)
+ {
+ SYSTEM_INFO si;
+ GetSystemInfo(&si);
+ return si.dwPageSize;
+ }
+
+#else
+ /* POSIX */
+ static intptr_t
+ eio_pagesize (void)
+ {
+ static intptr_t page;
+
+ if (!page)
+ page = sysconf (_SC_PAGESIZE);
+
+ return page;
+ }
+#endif
+
+static void
+eio_page_align (void **addr, size_t *length)
+{
+ intptr_t mask = eio_pagesize () - 1;
+
+ /* round down addr */
+ intptr_t adj = mask & (intptr_t)*addr;
+
+ *addr = (void *)((intptr_t)*addr - adj);
+ *length += adj;
+
+ /* round up length */
+ *length = (*length + mask) & ~mask;
+}
+
+#if !_POSIX_MEMLOCK
+# define eio__mlockall(a) ((errno = ENOSYS), -1)
+#else
+
+static int
+eio__mlockall (int flags)
+{
+ #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
+ extern int mallopt (int, int);
+ mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
+ #endif
+
+ if (EIO_MCL_CURRENT != MCL_CURRENT
+ || EIO_MCL_FUTURE != MCL_FUTURE)
+ {
+ flags = 0
+ | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0)
+ | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0);
+ }
+
+ return mlockall (flags);
+}
+#endif
+
+#if !_POSIX_MEMLOCK_RANGE
+# define eio__mlock(a,b) ((errno = ENOSYS), -1)
+#else
+
+static int
+eio__mlock (void *addr, size_t length)
+{
+ eio_page_align (&addr, &length);
+
+ return mlock (addr, length);
+}
+
+#endif
+
+#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
+# define eio__msync(a,b,c) ((errno = ENOSYS), -1)
+#else
+
+int
+eio__msync (void *mem, size_t len, int flags)
+{
+ eio_page_align (&mem, &len);
+
+ if (EIO_MS_ASYNC != MS_SYNC
+ || EIO_MS_INVALIDATE != MS_INVALIDATE
+ || EIO_MS_SYNC != MS_SYNC)
+ {
+ flags = 0
+ | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0)
+ | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0)
+ | (flags & EIO_MS_SYNC ? MS_SYNC : 0);
+ }
+
+ return msync (mem, len, flags);
+}
+
+#endif
+
+int
+eio__mtouch (void *mem, size_t len, int flags)
+{
+ eio_page_align (&mem, &len);
+
+ {
+ intptr_t addr = (intptr_t)mem;
+ intptr_t end = addr + len;
+ intptr_t page = eio_pagesize ();
+
+ if (addr < end)
+ if (flags & EIO_MT_MODIFY) /* modify */
+ do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
+ else
+ do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len);
+ }
+
+ return 0;
+}
+
+/*****************************************************************************/
+
+#define ALLOC(len) \
+ if (!req->ptr2) \
+ { \
+ X_LOCK (wrklock); \
+ req->flags |= EIO_FLAG_PTR2_FREE; \
+ X_UNLOCK (wrklock); \
+ req->ptr2 = malloc (len); \
+ if (!req->ptr2) \
+ { \
+ errno = ENOMEM; \
+ req->result = -1; \
+ break; \
+ } \
+ }
+
+X_THREAD_PROC (etp_proc)
+{
+ ETP_REQ *req;
+ struct timespec ts;
+ etp_worker *self = (etp_worker *)thr_arg;
+
+ /* try to distribute timeouts somewhat randomly */
+ ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
+
+ for (;;)
+ {
+ X_LOCK (reqlock);
+
+ for (;;)
+ {
+ self->req = req = reqq_shift (&req_queue);
+
+ if (req)
+ break;
+
+ ++idle;
+
+ ts.tv_sec = time (0) + IDLE_TIMEOUT;
+ if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT)
+ {
+ if (idle > max_idle)
+ {
+ --idle;
+ X_UNLOCK (reqlock);
+ X_LOCK (wrklock);
+ --started;
+ X_UNLOCK (wrklock);
+ goto quit;
+ }
+
+ /* we are allowed to idle, so do so without any timeout */
+ X_COND_WAIT (reqwait, reqlock);
+ }
+
+ --idle;
+ }
+
+ --nready;
+
+ X_UNLOCK (reqlock);
+
+ if (req->type < 0)
+ goto quit;
+
+ if (!EIO_CANCELLED (req))
+ ETP_EXECUTE (self, req);
+
+ X_LOCK (reslock);
+
+ ++npending;
+
+ if (!reqq_push (&res_queue, req) && want_poll_cb)
+ want_poll_cb ();
+
+ self->req = 0;
+ etp_worker_clear (self);
+
+ X_UNLOCK (reslock);
+ }
+
+quit:
+ X_LOCK (wrklock);
+ etp_worker_free (self);
+ X_UNLOCK (wrklock);
+
+ return 0;
+}
+
+/*****************************************************************************/
+
+int eio_init (void (*want_poll)(void), void (*done_poll)(void))
+{
+ return etp_init (want_poll, done_poll);
+}
+
+static void eio_api_destroy (eio_req *req)
+{
+ free (req);
+}
+
+#define REQ(rtype) \
+ eio_req *req; \
+ \
+ req = (eio_req *)calloc (1, sizeof *req); \
+ if (!req) \
+ return 0; \
+ \
+ req->type = rtype; \
+ req->pri = pri; \
+ req->finish = cb; \
+ req->data = data; \
+ req->destroy = eio_api_destroy;
+
+#define SEND eio_submit (req); return req
+
+#define PATH \
+ req->flags |= EIO_FLAG_PTR1_FREE; \
+ req->ptr1 = strdup (path); \
+ if (!req->ptr1) \
+ { \
+ eio_api_destroy (req); \
+ return 0; \
+ }
+
+static void eio_execute (etp_worker *self, eio_req *req)
+{
+ switch (req->type)
+ {
+ case EIO_READ: ALLOC (req->size);
+ req->result = req->offs >= 0
+ ? pread (req->int1, req->ptr2, req->size, req->offs)
+ : read (req->int1, req->ptr2, req->size); break;
+ case EIO_WRITE:
+#if defined (__APPLE__)
+ pthread_mutex_lock (&apple_bug_writelock);
+#endif
+
+ req->result = req->offs >= 0
+ ? pwrite (req->int1, req->ptr2, req->size, req->offs)
+ : write (req->int1, req->ptr2, req->size);
+
+#if defined (__APPLE__)
+ pthread_mutex_unlock (&apple_bug_writelock);
+#endif
+ break;
+
+ case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
+ case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break;
+
+ case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT));
+ req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
+#ifndef _WIN32
+ case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
+ req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break;
+#endif
+ case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT));
+ req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break;
+
+#ifndef _WIN32
+ case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
+ req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
+ case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS));
+ req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break;
+
+ case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
+ case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
+#endif
+ case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break;
+#ifndef _WIN32
+ case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break;
+ case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
+#endif
+ case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
+
+ case EIO_OPEN: req->result = open (req->ptr1, req->int1, (mode_t)req->int2); break;
+ case EIO_CLOSE: req->result = close (req->int1); break;
+ case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break;
+ case EIO_UNLINK: req->result = unlink (req->ptr1); break;
+ case EIO_RMDIR: req->result = rmdir (req->ptr1); break;
+#ifdef _WIN32
+ case EIO_MKDIR: req->result = mkdir (req->ptr1); break;
+#else
+ case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break;
+#endif
+ case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break;
+#ifndef _WIN32
+ case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break;
+ case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break;
+ case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break;
+#endif
+
+#ifndef _WIN32
+ case EIO_READLINK: ALLOC (PATH_MAX);
+ req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break;
+#endif
+
+#ifndef _WIN32
+ case EIO_SYNC: req->result = 0; sync (); break;
+#endif
+ case EIO_FSYNC: req->result = fsync (req->int1); break;
+ case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
+ case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break;
+ case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;
+ case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break;
+ case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break;
+ case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break;
+
+ case EIO_READDIR: eio__scandir (req, self); break;
+
+ case EIO_BUSY:
+#ifdef _WIN32
+ Sleep (req->nv1 * 1e3);
+#else
+ {
+ struct timeval tv;
+
+ tv.tv_sec = req->nv1;
+ tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6;
+
+ req->result = select (0, 0, 0, 0, &tv);
+ }
+#endif
+ break;
+
+ case EIO_UTIME:
+ case EIO_FUTIME:
+ {
+ struct timeval tv[2];
+ struct timeval *times;
+
+ if (req->nv1 != -1. || req->nv2 != -1.)
+ {
+ tv[0].tv_sec = req->nv1;
+ tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
+ tv[1].tv_sec = req->nv2;
+ tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
+
+ times = tv;
+ }
+ else
+ times = 0;
+
+ req->result = req->type == EIO_FUTIME
+ ? futimes (req->int1, times)
+ : utimes (req->ptr1, times);
+ }
+ break;
+
+ case EIO_GROUP:
+ abort (); /* handled in eio_request */
+
+ case EIO_NOP:
+ req->result = 0;
+ break;
+
+ case EIO_CUSTOM:
+ ((void (*)(eio_req *))req->feed) (req);
+ break;
+
+ default:
+ errno = ENOSYS;
+ req->result = -1;
+ break;
+ }
+
+ req->errorno = errno;
+}
+
+#ifndef EIO_NO_WRAPPERS
+
+eio_req *eio_nop (int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_NOP); SEND;
+}
+
+eio_req *eio_busy (double delay, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_BUSY); req->nv1 = delay; SEND;
+}
+
+eio_req *eio_sync (int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_SYNC); SEND;
+}
+
+eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_FSYNC); req->int1 = fd; SEND;
+}
+
+eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
+}
+
+eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
+}
+
+eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND;
+}
+
+eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_MLOCKALL); req->int1 = flags; SEND;
+}
+
+eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND;
+}
+
+eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
+}
+
+eio_req *eio_close (int fd, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_CLOSE); req->int1 = fd; SEND;
+}
+
+eio_req *eio_readahead (int fd, off_t offset, size_t length, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_READAHEAD); req->int1 = fd; req->offs = offset; req->size = length; SEND;
+}
+
+eio_req *eio_read (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_READ); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
+}
+
+eio_req *eio_write (int fd, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_WRITE); req->int1 = fd; req->offs = offset; req->size = length; req->ptr2 = buf; SEND;
+}
+
+eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_FSTAT); req->int1 = fd; SEND;
+}
+
+eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_FSTATVFS); req->int1 = fd; SEND;
+}
+
+eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND;
+}
+
+eio_req *eio_ftruncate (int fd, off_t offset, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_FTRUNCATE); req->int1 = fd; req->offs = offset; SEND;
+}
+
+eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND;
+}
+
+eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
+}
+
+eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_DUP2); req->int1 = fd; req->int2 = fd2; SEND;
+}
+
+eio_req *eio_sendfile (int out_fd, int in_fd, off_t in_offset, size_t length, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_SENDFILE); req->int1 = out_fd; req->int2 = in_fd; req->offs = in_offset; req->size = length; SEND;
+}
+
+eio_req *eio_open (const char *path, int flags, mode_t mode, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_OPEN); PATH; req->int1 = flags; req->int2 = (long)mode; SEND;
+}
+
+eio_req *eio_utime (const char *path, double atime, double mtime, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_UTIME); PATH; req->nv1 = atime; req->nv2 = mtime; SEND;
+}
+
+eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND;
+}
+
+eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND;
+}
+
+eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_CHMOD); PATH; req->int2 = (long)mode; SEND;
+}
+
+eio_req *eio_mkdir (const char *path, mode_t mode, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_MKDIR); PATH; req->int2 = (long)mode; SEND;
+}
+
+static eio_req *
+eio__1path (int type, const char *path, int pri, eio_cb cb, void *data)
+{
+ REQ (type); PATH; SEND;
+}
+
+eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data)
+{
+ return eio__1path (EIO_READLINK, path, pri, cb, data);
+}
+
+eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data)
+{
+ return eio__1path (EIO_STAT, path, pri, cb, data);
+}
+
+eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data)
+{
+ return eio__1path (EIO_LSTAT, path, pri, cb, data);
+}
+
+eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data)
+{
+ return eio__1path (EIO_STATVFS, path, pri, cb, data);
+}
+
+eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data)
+{
+ return eio__1path (EIO_UNLINK, path, pri, cb, data);
+}
+
+eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data)
+{
+ return eio__1path (EIO_RMDIR, path, pri, cb, data);
+}
+
+eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_READDIR); PATH; req->int1 = flags; SEND;
+}
+
+eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND;
+}
+
+static eio_req *
+eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data)
+{
+ REQ (type); PATH;
+
+ req->flags |= EIO_FLAG_PTR2_FREE;
+ req->ptr2 = strdup (new_path);
+ if (!req->ptr2)
+ {
+ eio_api_destroy (req);
+ return 0;
+ }
+
+ SEND;
+}
+
+eio_req *eio_link (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
+{
+ return eio__2path (EIO_LINK, path, new_path, pri, cb, data);
+}
+
+eio_req *eio_symlink (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
+{
+ return eio__2path (EIO_SYMLINK, path, new_path, pri, cb, data);
+}
+
+eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data)
+{
+ return eio__2path (EIO_RENAME, path, new_path, pri, cb, data);
+}
+
+eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data)
+{
+ REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND;
+}
+
+#endif
+
+eio_req *eio_grp (eio_cb cb, void *data)
+{
+ const int pri = EIO_PRI_MAX;
+
+ REQ (EIO_GROUP); SEND;
+}
+
+#undef REQ
+#undef PATH
+#undef SEND
+
+/*****************************************************************************/
+/* grp functions */
+
+void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit)
+{
+ grp->int2 = limit;
+ grp->feed = feed;
+
+ grp_try_feed (grp);
+}
+
+void eio_grp_limit (eio_req *grp, int limit)
+{
+ grp->int2 = limit;
+
+ grp_try_feed (grp);
+}
+
+void eio_grp_add (eio_req *grp, eio_req *req)
+{
+ assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2));
+
+ grp->flags |= EIO_FLAG_GROUPADD;
+
+ ++grp->size;
+ req->grp = grp;
+
+ req->grp_prev = 0;
+ req->grp_next = grp->grp_first;
+
+ if (grp->grp_first)
+ grp->grp_first->grp_prev = req;
+
+ grp->grp_first = req;
+}
+
+/*****************************************************************************/
+/* misc garbage */
+
+ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count)
+{
+ etp_worker wrk;
+ ssize_t ret;
+
+ wrk.dbuf = 0;
+
+ ret = eio__sendfile (ofd, ifd, offset, count, &wrk);
+
+ if (wrk.dbuf)
+ free (wrk.dbuf);
+
+ return ret;
+}
+
--- /dev/null
+=head1 NAME
+
+libeio - truly asynchronous POSIX I/O
+
+=head1 SYNOPSIS
+
+ #include <eio.h>
+
+=head1 DESCRIPTION
+
+The newest version of this document is also available as an html-formatted
+web page you might find easier to navigate when reading it for the first
+time: L<http://pod.tst.eu/http://cvs.schmorp.de/libeio/eio.pod>.
+
+Note that this library is a by-product of the C<IO::AIO> perl
+module, and many of the subtler points regarding requets lifetime
+and so on are only documented in its documentation at the
+moment: L<http://pod.tst.eu/http://cvs.schmorp.de/IO-AIO/AIO.pm>.
+
+=head2 FEATURES
+
+This library provides fully asynchronous versions of most POSIX functions
+dealign with I/O. Unlike most asynchronous libraries, this not only
+includes C<read> and C<write>, but also C<open>, C<stat>, C<unlink> and
+similar functions, as well as less rarely ones such as C<mknod>, C<futime>
+or C<readlink>.
+
+It also offers wrappers around C<sendfile> (Solaris, Linux, HP-UX and
+FreeBSD, with emulation on other platforms) and C<readahead> (Linux, with
+emulation elsewhere>).
+
+The goal is to enable you to write fully non-blocking programs. For
+example, in a game server, you would not want to freeze for a few seconds
+just because the server is running a backup and you happen to call
+C<readdir>.
+
+=head2 TIME REPRESENTATION
+
+Libeio represents time as a single floating point number, representing the
+(fractional) number of seconds since the (POSIX) epoch (somewhere near
+the beginning of 1970, details are complicated, don't ask). This type is
+called C<eio_tstamp>, but it is guarenteed to be of type C<double> (or
+better), so you can freely use C<double> yourself.
+
+Unlike the name component C<stamp> might indicate, it is also used for
+time differences throughout libeio.
+
+=head2 FORK SUPPORT
+
+Calling C<fork ()> is fully supported by this module. It is implemented in these steps:
+
+ 1. wait till all requests in "execute" state have been handled
+ (basically requests that are already handed over to the kernel).
+ 2. fork
+ 3. in the parent, continue business as usual, done
+ 4. in the child, destroy all ready and pending requests and free the
+ memory used by the worker threads. This gives you a fully empty
+ libeio queue.
+
+=head1 INITIALISATION/INTEGRATION
+
+Before you can call any eio functions you first have to initialise the
+library. The library integrates into any event loop, but can also be used
+without one, including in polling mode.
+
+You have to provide the necessary glue yourself, however.
+
+=over 4
+
+=item int eio_init (void (*want_poll)(void), void (*done_poll)(void))
+
+This function initialises the library. On success it returns C<0>, on
+failure it returns C<-1> and sets C<errno> appropriately.
+
+It accepts two function pointers specifying callbacks as argument, both of
+which can be C<0>, in which case the callback isn't called.
+
+=item want_poll callback
+
+The C<want_poll> callback is invoked whenever libeio wants attention (i.e.
+it wants to be polled by calling C<eio_poll>). It is "edge-triggered",
+that is, it will only be called once when eio wants attention, until all
+pending requests have been handled.
+
+This callback is called while locks are being held, so I<you must
+not call any libeio functions inside this callback>. That includes
+C<eio_poll>. What you should do is notify some other thread, or wake up
+your event loop, and then call C<eio_poll>.
+
+=item done_poll callback
+
+This callback is invoked when libeio detects that all pending requests
+have been handled. It is "edge-triggered", that is, it will only be
+called once after C<want_poll>. To put it differently, C<want_poll> and
+C<done_poll> are invoked in pairs: after C<want_poll> you have to call
+C<eio_poll ()> until either C<eio_poll> indicates that everything has been
+handled or C<done_poll> has been called, which signals the same.
+
+Note that C<eio_poll> might return after C<done_poll> and C<want_poll>
+have been called again, so watch out for races in your code.
+
+As with C<want_poll>, this callback is called while lcoks are being held,
+so you I<must not call any libeio functions form within this callback>.
+
+=item int eio_poll ()
+
+This function has to be called whenever there are pending requests that
+need finishing. You usually call this after C<want_poll> has indicated
+that you should do so, but you can also call this function regularly to
+poll for new results.
+
+If any request invocation returns a non-zero value, then C<eio_poll ()>
+immediately returns with that value as return value.
+
+Otherwise, if all requests could be handled, it returns C<0>. If for some
+reason not all requests have been handled, i.e. some are still pending, it
+returns C<-1>.
+
+=back
+
+For libev, you would typically use an C<ev_async> watcher: the
+C<want_poll> callback would invoke C<ev_async_send> to wake up the event
+loop. Inside the callback set for the watcher, one would call C<eio_poll
+()> (followed by C<ev_async_send> again if C<eio_poll> indicates that not
+all requests have been handled yet). The race is taken care of because
+libev resets/rearms the async watcher before calling your callback,
+and therefore, before calling C<eio_poll>. This might result in (some)
+spurious wake-ups, but is generally harmless.
+
+For most other event loops, you would typically use a pipe - the event
+loop should be told to wait for read readyness on the read end. In
+C<want_poll> you would write a single byte, in C<done_poll> you would try
+to read that byte, and in the callback for the read end, you would call
+C<eio_poll>. The race is avoided here because the event loop should invoke
+your callback again and again until the byte has been read (as the pipe
+read callback does not read it, only C<done_poll>).
+
+=head2 CONFIGURATION
+
+The functions in this section can sometimes be useful, but the default
+configuration will do in most case, so you should skip this section on
+first reading.
+
+=over 4
+
+=item eio_set_max_poll_time (eio_tstamp nseconds)
+
+This causes C<eio_poll ()> to return after it has detected that it was
+running for C<nsecond> seconds or longer (this number can be fractional).
+
+This can be used to limit the amount of time spent handling eio requests,
+for example, in interactive programs, you might want to limit this time to
+C<0.01> seconds or so.
+
+Note that:
+
+a) libeio doesn't know how long your request callbacks take, so the time
+spent in C<eio_poll> is up to one callback invocation longer then this
+interval.
+
+b) this is implemented by calling C<gettimeofday> after each request,
+which can be costly.
+
+c) at least one request will be handled.
+
+=item eio_set_max_poll_reqs (unsigned int nreqs)
+
+When C<nreqs> is non-zero, then C<eio_poll> will not handle more than
+C<nreqs> requests per invocation. This is a less costly way to limit the
+amount of work done by C<eio_poll> then setting a time limit.
+
+If you know your callbacks are generally fast, you could use this to
+encourage interactiveness in your programs by setting it to C<10>, C<100>
+or even C<1000>.
+
+=item eio_set_min_parallel (unsigned int nthreads)
+
+Make sure libeio can handle at least this many requests in parallel. It
+might be able handle more.
+
+=item eio_set_max_parallel (unsigned int nthreads)
+
+Set the maximum number of threads that libeio will spawn.
+
+=item eio_set_max_idle (unsigned int nthreads)
+
+Libeio uses threads internally to handle most requests, and will start and stop threads on demand.
+
+This call can be used to limit the number of idle threads (threads without
+work to do): libeio will keep some threads idle in preperation for more
+requests, but never longer than C<nthreads> threads.
+
+In addition to this, libeio will also stop threads when they are idle for
+a few seconds, regardless of this setting.
+
+=item unsigned int eio_nthreads ()
+
+Return the number of worker threads currently running.
+
+=item unsigned int eio_nreqs ()
+
+Return the number of requests currently handled by libeio. This is the
+total number of requests that have been submitted to libeio, but not yet
+destroyed.
+
+=item unsigned int eio_nready ()
+
+Returns the number of ready requests, i.e. requests that have been
+submitted but have not yet entered the execution phase.
+
+=item unsigned int eio_npending ()
+
+Returns the number of pending requests, i.e. requests that have been
+executed and have results, but have not been finished yet by a call to
+C<eio_poll>).
+
+=back
+
+
+=head1 ANATOMY OF AN EIO REQUEST
+
+#TODO
+
+
+=head1 HIGH LEVEL REQUEST API
+
+#TODO
+
+=back
+
+
+=head1 LOW LEVEL REQUEST API
+
+#TODO
+
+=head1 EMBEDDING
+
+Libeio can be embedded directly into programs. This functionality is not
+documented and not (yet) officially supported.
+
+Note that, when including C<libeio.m4>, you are responsible for defining
+the compilation environment (C<_LARGEFILE_SOURCE>, C<_GNU_SOURCE> etc.).
+
+If you need to know how, check the C<IO::AIO> perl module, which does
+exactly that.
+
+
+=head1 COMPILETIME CONFIGURATION
+
+These symbols, if used, must be defined when compiling F<eio.c>.
+
+=over 4
+
+=item EIO_STACKSIZE
+
+This symbol governs the stack size for each eio thread. Libeio itself
+was written to use very little stackspace, but when using C<EIO_CUSTOM>
+requests, you might want to increase this.
+
+If this symbol is undefined (the default) then libeio will use its default
+stack size (C<sizeof (long) * 4096> currently). If it is defined, but
+C<0>, then the default operating system stack size will be used. In all
+other cases, the value must be an expression that evaluates to the desired
+stack size.
+
+=back
+
+
+=head1 PORTABILITY REQUIREMENTS
+
+In addition to a working ISO-C implementation, libeio relies on a few
+additional extensions:
+
+=over 4
+
+=item POSIX threads
+
+To be portable, this module uses threads, specifically, the POSIX threads
+library must be available (and working, which partially excludes many xBSD
+systems, where C<fork ()> is buggy).
+
+=item POSIX-compatible filesystem API
+
+This is actually a harder portability requirement: The libeio API is quite
+demanding regarding POSIX API calls (symlinks, user/group management
+etc.).
+
+=item C<double> must hold a time value in seconds with enough accuracy
+
+The type C<double> is used to represent timestamps. It is required to
+have at least 51 bits of mantissa (and 9 bits of exponent), which is good
+enough for at least into the year 4000. This requirement is fulfilled by
+implementations implementing IEEE 754 (basically all existing ones).
+
+=back
+
+If you know of other additional requirements drop me a note.
+
+
+=head1 AUTHOR
+
+Marc Lehmann <libeio@schmorp.de>.
+
--- /dev/null
+AC_SEARCH_LIBS(
+ pthread_create,
+ [pthread pthreads pthreadVC2],
+ ,
+ [AC_MSG_ERROR(pthread functions not found)]
+)
+
+AC_CACHE_CHECK(for utimes, ac_cv_utimes, [AC_LINK_IFELSE([[
+#include <sys/types.h>
+#include <sys/time.h>
+#include <utime.h>
+struct timeval tv[2];
+int res;
+int main (void)
+{
+ res = utimes ("/", tv);
+ return 0;
+}
+]],ac_cv_utimes=yes,ac_cv_utimes=no)])
+test $ac_cv_utimes = yes && AC_DEFINE(HAVE_UTIMES, 1, utimes(2) is available)
+
+AC_CACHE_CHECK(for futimes, ac_cv_futimes, [AC_LINK_IFELSE([[
+#include <sys/types.h>
+#include <sys/time.h>
+#include <utime.h>
+struct timeval tv[2];
+int res;
+int fd;
+int main (void)
+{
+ res = futimes (fd, tv);
+ return 0;
+}
+]],ac_cv_futimes=yes,ac_cv_futimes=no)])
+test $ac_cv_futimes = yes && AC_DEFINE(HAVE_FUTIMES, 1, futimes(2) is available)
+
+AC_CACHE_CHECK(for readahead, ac_cv_readahead, [AC_LINK_IFELSE([
+#include <fcntl.h>
+int main (void)
+{
+ int fd = 0;
+ size_t count = 2;
+ ssize_t res;
+ res = readahead (fd, 0, count);
+ return 0;
+}
+],ac_cv_readahead=yes,ac_cv_readahead=no)])
+test $ac_cv_readahead = yes && AC_DEFINE(HAVE_READAHEAD, 1, readahead(2) is available (linux))
+
+AC_CACHE_CHECK(for fdatasync, ac_cv_fdatasync, [AC_LINK_IFELSE([
+#include <unistd.h>
+int main (void)
+{
+ int fd = 0;
+ fdatasync (fd);
+ return 0;
+}
+],ac_cv_fdatasync=yes,ac_cv_fdatasync=no)])
+test $ac_cv_fdatasync = yes && AC_DEFINE(HAVE_FDATASYNC, 1, fdatasync(2) is available)
+
+AC_CACHE_CHECK(for pread and pwrite, ac_cv_preadwrite, [AC_LINK_IFELSE([
+#include <unistd.h>
+int main (void)
+{
+ int fd = 0;
+ size_t count = 1;
+ char buf;
+ off_t offset = 1;
+ ssize_t res;
+ res = pread (fd, &buf, count, offset);
+ res = pwrite (fd, &buf, count, offset);
+ return 0;
+}
+],ac_cv_preadwrite=yes,ac_cv_preadwrite=no)])
+test $ac_cv_preadwrite = yes && AC_DEFINE(HAVE_PREADWRITE, 1, pread(2) and pwrite(2) are available)
+
+AC_CACHE_CHECK(for sendfile, ac_cv_sendfile, [AC_LINK_IFELSE([
+# include <sys/types.h>
+#if __linux
+# include <sys/sendfile.h>
+#elif __FreeBSD__ || defined __APPLE__
+# include <sys/socket.h>
+# include <sys/uio.h>
+#elif __hpux
+# include <sys/socket.h>
+#else
+# error unsupported architecture
+#endif
+int main (void)
+{
+ int fd = 0;
+ off_t offset = 1;
+ size_t count = 2;
+ ssize_t res;
+#if __linux
+ res = sendfile (fd, fd, offset, count);
+#elif __FreeBSD__
+ res = sendfile (fd, fd, offset, count, 0, &offset, 0);
+#elif __hpux
+ res = sendfile (fd, fd, offset, count, 0, 0);
+#endif
+ return 0;
+}
+],ac_cv_sendfile=yes,ac_cv_sendfile=no)])
+test $ac_cv_sendfile = yes && AC_DEFINE(HAVE_SENDFILE, 1, sendfile(2) is available and supported)
+
+AC_CACHE_CHECK(for sync_file_range, ac_cv_sync_file_range, [AC_LINK_IFELSE([
+#include <fcntl.h>
+int main (void)
+{
+ int fd = 0;
+ off64_t offset = 1;
+ off64_t nbytes = 1;
+ unsigned int flags = SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE|SYNC_FILE_RANGE_WAIT_AFTER;
+ ssize_t res;
+ res = sync_file_range (fd, offset, nbytes, flags);
+ return 0;
+}
+],ac_cv_sync_file_range=yes,ac_cv_sync_file_range=no)])
+test $ac_cv_sync_file_range = yes && AC_DEFINE(HAVE_SYNC_FILE_RANGE, 1, sync_file_range(2) is available)
+
+dnl #############################################################################
+dnl # these checks exist for the benefit of IO::AIO
+
+dnl at least uclibc defines _POSIX_ADVISORY_INFO without *any* of the required
+dnl functionality actually being present. ugh.
+AC_CACHE_CHECK(for posix_madvise, ac_cv_posix_madvise, [AC_LINK_IFELSE([
+#include <sys/mman.h>
+int main (void)
+{
+ int res = posix_madvise ((void *)0, (size_t)0, POSIX_MADV_NORMAL);
+ int a = POSIX_MADV_SEQUENTIAL;
+ int b = POSIX_MADV_RANDOM;
+ int c = POSIX_MADV_WILLNEED;
+ int d = POSIX_MADV_DONTNEED;
+ return 0;
+}
+],ac_cv_posix_madvise=yes,ac_cv_posix_madvise=no)])
+test $ac_cv_posix_madvise = yes && AC_DEFINE(HAVE_POSIX_MADVISE, 1, posix_madvise(2) is available)
+
+AC_CACHE_CHECK(for posix_fadvise, ac_cv_posix_fadvise, [AC_LINK_IFELSE([
+#define _XOPEN_SOURCE 600
+#include <fcntl.h>
+int main (void)
+{
+ int res = posix_fadvise ((int)0, (off_t)0, (off_t)0, POSIX_FADV_NORMAL);
+ int a = POSIX_FADV_SEQUENTIAL;
+ int b = POSIX_FADV_NOREUSE;
+ int c = POSIX_FADV_RANDOM;
+ int d = POSIX_FADV_WILLNEED;
+ int e = POSIX_FADV_DONTNEED;
+ return 0;
+}
+],ac_cv_posix_fadvise=yes,ac_cv_posix_fadvise=no)])
+test $ac_cv_posix_fadvise = yes && AC_DEFINE(HAVE_POSIX_FADVISE, 1, posix_fadvise(2) is available)
+
--- /dev/null
+#ifndef XTHREAD_H_
+#define XTHREAD_H_
+
+/* whether word reads are potentially non-atomic.
+ * this is conservatice, likely most arches this runs
+ * on have atomic word read/writes.
+ */
+#ifndef WORDACCESS_UNSAFE
+# if __i386 || __x86_64
+# define WORDACCESS_UNSAFE 0
+# else
+# define WORDACCESS_UNSAFE 1
+# endif
+#endif
+
+/////////////////////////////////////////////////////////////////////////////
+
+#ifdef _WIN32
+
+#ifndef __MINGW32__
+typedef int ssize_t
+#endif
+
+#define NTDDI_VERSION NTDDI_WIN2K // needed to get win2000 api calls
+#ifndef _WIN32_WINNT
+#define _WIN32_WINNT 0x400
+#endif
+#include <stdio.h>//D
+#include <fcntl.h>
+#include <io.h>
+#include <time.h>
+#include <winsock2.h>
+#include <process.h>
+#include <windows.h>
+#include <pthread.h>
+#define sigset_t int
+#define pthread_sigmask(a,b,c)
+#define sigaddset(a,b)
+#define sigemptyset(s)
+#define sigfillset(s)
+
+typedef pthread_mutex_t xmutex_t;
+#define X_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
+#define X_LOCK(mutex) pthread_mutex_lock (&(mutex))
+#define X_UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
+
+typedef pthread_cond_t xcond_t;
+#define X_COND_INIT PTHREAD_COND_INITIALIZER
+#define X_COND_SIGNAL(cond) pthread_cond_signal (&(cond))
+#define X_COND_WAIT(cond,mutex) pthread_cond_wait (&(cond), &(mutex))
+#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to))
+
+typedef pthread_t xthread_t;
+#define X_THREAD_PROC(name) void *name (void *thr_arg)
+#define X_THREAD_ATFORK(a,b,c)
+
+static int
+thread_create (xthread_t *tid, void *(*proc)(void *), void *arg)
+{
+ int retval;
+ pthread_attr_t attr;
+
+ pthread_attr_init (&attr);
+ pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
+
+ retval = pthread_create (tid, &attr, proc, arg) == 0;
+
+ pthread_attr_destroy (&attr);
+
+ return retval;
+}
+
+#define respipe_read(a,b,c) PerlSock_recv ((a), (b), (c), 0)
+#define respipe_write(a,b,c) send ((a), (b), (c), 0)
+#define respipe_close(a) PerlSock_closesocket ((a))
+
+#else
+/////////////////////////////////////////////////////////////////////////////
+
+#if __linux && !defined(_GNU_SOURCE)
+# define _GNU_SOURCE
+#endif
+
+/* just in case */
+#define _REENTRANT 1
+
+#if __solaris
+# define _POSIX_PTHREAD_SEMANTICS 1
+/* try to bribe solaris headers into providing a current pthread API
+ * despite environment being configured for an older version.
+ */
+# define __EXTENSIONS__ 1
+#endif
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <limits.h>
+#include <pthread.h>
+
+typedef pthread_mutex_t xmutex_t;
+#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
+# define X_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
+#else
+# define X_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
+#endif
+#define X_LOCK(mutex) pthread_mutex_lock (&(mutex))
+#define X_UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
+
+typedef pthread_cond_t xcond_t;
+#define X_COND_INIT PTHREAD_COND_INITIALIZER
+#define X_COND_SIGNAL(cond) pthread_cond_signal (&(cond))
+#define X_COND_WAIT(cond,mutex) pthread_cond_wait (&(cond), &(mutex))
+#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to))
+
+typedef pthread_t xthread_t;
+#define X_THREAD_PROC(name) static void *name (void *thr_arg)
+#define X_THREAD_ATFORK(prepare,parent,child) pthread_atfork (prepare, parent, child)
+
+// the broken bsd's once more
+#ifndef PTHREAD_STACK_MIN
+# define PTHREAD_STACK_MIN 0
+#endif
+
+#ifndef X_STACKSIZE
+# define X_STACKSIZE sizeof (long) * 4096
+#endif
+
+static int
+thread_create (xthread_t *tid, void *(*proc)(void *), void *arg)
+{
+ int retval;
+ sigset_t fullsigset, oldsigset;
+ pthread_attr_t attr;
+
+ pthread_attr_init (&attr);
+ pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
+ pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < X_STACKSIZE ? X_STACKSIZE : PTHREAD_STACK_MIN);
+#ifdef PTHREAD_SCOPE_PROCESS
+ pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
+#endif
+
+ sigfillset (&fullsigset);
+
+ pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
+ retval = pthread_create (tid, &attr, proc, arg) == 0;
+ pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
+
+ pthread_attr_destroy (&attr);
+
+ return retval;
+}
+
+#define respipe_read(a,b,c) read ((a), (b), (c))
+#define respipe_write(a,b,c) write ((a), (b), (c))
+#define respipe_close(a) close ((a))
+
+#endif
+
+#endif
+
--- /dev/null
+Revision history for libev, a high-performance and full-featured event loop.
+
+4.04 Wed Feb 16 09:01:51 CET 2011
+ - fix two problems in the native win32 backend, where reuse of fd's
+ with different underlying handles caused handles not to be removed
+ or added to the select set (analyzed and tested by Bert Belder).
+ - do no rely on ceil() in ev_e?poll.c.
+ - backport libev to HP-UX versions before 11 v3.
+ - configure did not detect nanosleep and clock_gettime properly when
+ they are available in the libc (as opposed to -lrt).
+
+4.03 Tue Jan 11 14:37:25 CET 2011
+ - officially support polling files with all backends.
+ - support files, /dev/zero etc. the same way as select in the epoll
+ backend, by generating events on our own.
+ - ports backend: work around solaris bug 6874410 and many related ones
+ (EINTR, maybe more), with no performance loss (note that the solaris
+ bug report is actually wrong, reality is far more bizarre and broken
+ than that).
+ - define EV_READ/EV_WRITE as macros in event.h, as some programs use
+ #ifdef to test for them.
+ - new (experimental) function: ev_feed_signal.
+ - new (to become default) EVFLAG_NOSIGMASK flag.
+ - new EVBACKEND_MASK symbol.
+ - updated COMMON IDIOMS SECTION.
+
+4.01 Fri Nov 5 21:51:29 CET 2010
+ - automake fucked it up, apparently, --add-missing -f is not quite enough
+ to make it update its files, so 4.00 didn't install ev++.h and
+ event.h on make install. grrr.
+ - ev_loop(count|depth) didn't return anything (Robin Haberkorn).
+ - change EV_UNDEF to 0xffffffff to silence some overzealous compilers.
+ - use "(libev) " prefix for all libev error messages now.
+
+4.00 Mon Oct 25 12:32:12 CEST 2010
+ - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading.
+ - ev_embed_stop did not correctly stop the watcher (very good
+ testcase by Vladimir Timofeev).
+ - ev_run will now always update the current loop time - it erroneously
+ didn't when idle watchers were active, causing timers not to fire.
+ - fix a bug where a timeout of zero caused the timer not to fire
+ in the libevent emulation (testcase by Péter Szabó).
+ - applied win32 fixes by Michael Lenaghan (also James Mansion).
+ - replace EV_MINIMAL by EV_FEATURES.
+ - prefer EPOLL_CTL_ADD over EPOLL_CTL_MOD in some more cases, as it
+ seems the former is *much* faster than the latter.
+ - linux kernel version detection (for inotify bug workarounds)
+ did not work properly.
+ - reduce the number of spurious wake-ups with the ports backend.
+ - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu).
+ - do async init within ev_async_start, not ev_async_set, which avoids
+ an API quirk where the set function must be called in the C++ API
+ even when there is nothing to set.
+ - add (undocumented) EV_ENABLE when adding events with kqueue,
+ this might help with OS X, which seems to need it despite documenting
+ not to need it (helpfully pointed out by Tilghman Lesher).
+ - do not use poll by default on freebsd, it's broken (what isn't
+ on freebsd...).
+ - allow to embed epoll on kernels >= 2.6.32.
+ - configure now prepends -O3, not appends it, so one can still
+ override it.
+ - ev.pod: greatly expanded the portability section, added a porting
+ section, a description of watcher states and made lots of minor fixes.
+ - disable poll backend on AIX, the poll header spams the namespace
+ and it's not worth working around dead platforms (reported
+ and analyzed by Aivars Kalvans).
+ - improve header file compatibility of the standalone eventfd code
+ in an obscure case.
+ - implement EV_AVOID_STDIO option.
+ - do not use sscanf to parse linux version number (smaller, faster,
+ no sscanf dependency).
+ - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings.
+ - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs.
+ - add section on accept() problems to the manpage.
+ - rename EV_TIMEOUT to EV_TIMER.
+ - rename ev_loop_count/depth/verify/loop/unloop.
+ - remove ev_default_destroy and ev_default_fork.
+ - switch to two-digit minor version.
+ - work around an apparent gentoo compiler bug.
+ - define _DARWIN_UNLIMITED_SELECT. just so.
+ - use enum instead of #define for most constants.
+ - improve compatibility to older C++ compilers.
+ - (experimental) ev_run/ev_default_loop/ev_break/ev_loop_new have now
+ default arguments when compiled as C++.
+ - enable automake dependency tracking.
+ - ev_loop_new no longer leaks memory when loop creation failed.
+ - new ev_cleanup watcher type.
+
+3.9 Thu Dec 31 07:59:59 CET 2009
+ - signalfd is no longer used by default and has to be requested
+ explicitly - this means that easy to catch bugs become hard to
+ catch race conditions, but the users have spoken.
+ - point out the unspecified signal mask in the documentation, and
+ that this is a race condition regardless of EV_SIGNALFD.
+ - backport inotify code to C89.
+ - inotify file descriptors could leak into child processes.
+ - ev_stat watchers could keep an errornous extra ref on the loop,
+ preventing exit when unregistering all watchers (testcases
+ provided by ry@tinyclouds.org).
+ - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
+ symbols to make it easier for apps to do their own fd management.
+ - support EV_IDLE_ENABLE being disabled in ev++.h
+ (patch by Didier Spezia).
+ - take advantage of inotify_init1, if available, to set cloexec/nonblock
+ on fd creation, to avoid races.
+ - the signal handling pipe wasn't always initialised under windows
+ (analysed by lekma).
+ - changed minimum glibc requirement from glibc 2.9 to 2.7, for
+ signalfd.
+ - add missing string.h include (Denis F. Latypoff).
+ - only replace ev_stat.prev when we detect an actual difference,
+ so prev is (almost) always different to attr. this might
+ have caused the problems with 04_stat.t.
+ - add ev::timer->remaining () method to C++ API.
+
+3.8 Sun Aug 9 14:30:45 CEST 2009
+ - incompatible change: do not necessarily reset signal handler
+ to SIG_DFL when a sighandler is stopped.
+ - ev_default_destroy did not properly free or zero some members,
+ potentially causing crashes and memory corruption on repeated
+ ev_default_destroy/ev_default_loop calls.
+ - take advantage of signalfd on GNU/Linux systems.
+ - document that the signal mask might be in an unspecified
+ state when using libev's signal handling.
+ - take advantage of some GNU/Linux calls to set cloexec/nonblock
+ on fd creation, to avoid race conditions.
+
+3.7 Fri Jul 17 16:36:32 CEST 2009
+ - ev_unloop and ev_loop wrongly used a global variable to exit loops,
+ instead of using a per-loop variable (bug caught by accident...).
+ - the ev_set_io_collect_interval interpretation has changed.
+ - add new functionality: ev_set_userdata, ev_userdata,
+ ev_set_invoke_pending_cb, ev_set_loop_release_cb,
+ ev_invoke_pending, ev_pending_count, together with a long example
+ about thread locking.
+ - add ev_timer_remaining (as requested by Denis F. Latypoff).
+ - add ev_loop_depth.
+ - calling ev_unloop in fork/prepare watchers will no longer poll
+ for new events.
+ - Denis F. Latypoff corrected many typos in example code snippets.
+ - honor autoconf detection of EV_USE_CLOCK_SYSCALL, also double-
+ check that the syscall number is available before trying to
+ use it (reported by ry@tinyclouds).
+ - use GetSystemTimeAsFileTime instead of _timeb on windows, for
+ slightly higher accuracy.
+ - properly declare ev_loop_verify and ev_now_update even when
+ !EV_MULTIPLICITY.
+ - do not compile in any priority code when EV_MAXPRI == EV_MINPRI.
+ - support EV_MINIMAL==2 for a reduced API.
+ - actually 0-initialise struct sigaction when installing signals.
+ - add section on hibernate and stopped processes to ev_timer docs.
+
+3.6 Tue Apr 28 02:49:30 CEST 2009
+ - multiple timers becoming ready within an event loop iteration
+ will be invoked in the "correct" order now.
+ - do not leave the event loop early just because we have no active
+ watchers, fixing a problem when embedding a kqueue loop
+ that has active kernel events but no registered watchers
+ (reported by blacksand blacksand).
+ - correctly zero the idx values for arrays, so destroying and
+ reinitialising the default loop actually works (patch by
+ Malek Hadj-Ali).
+ - implement ev_suspend and ev_resume.
+ - new EV_CUSTOM revents flag for use by applications.
+ - add documentation section about priorites.
+ - add a glossary to the dcoumentation.
+ - extend the ev_fork description slightly.
+ - optimize a jump out of call_pending.
+
+3.53 Sun Feb 15 02:38:20 CET 2009
+ - fix a bug in event pipe creation on win32 that would cause a
+ failed assertion on event loop creation (patch by Malek Hadj-Ali).
+ - probe for CLOCK_REALTIME support at runtime as well and fall
+ back to gettimeofday if there is an error, to support older
+ operating systems with newer header files/libraries.
+ - prefer gettimeofday over clock_gettime with USE_CLOCK_SYSCALL
+ (default most everywhere), otherwise not.
+
+3.52 Wed Jan 7 21:43:02 CET 2009
+ - fix compilation of select backend in fd_set mode when NFDBITS is
+ missing (to get it to compile on QNX, reported by Rodrigo Campos).
+ - better select-nfds handling when select backend is in fd_set mode.
+ - diagnose fd_set overruns when select backend is in fd_set mode.
+ - due to a thinko, instead of disabling everything but
+ select on the borked OS X platform, everything but select was
+ allowed (reported by Emanuele Giaquinta).
+ - actually verify that local and remote port are matching in
+ libev's socketpair emulation, which makes denial-of-service
+ attacks harder (but not impossible - it's windows). Make sure
+ it even works under vista, which thinks that getpeer/sockname
+ should return fantasy port numbers.
+ - include "libev" in all assertion messages for potentially
+ clearer diagnostics.
+ - event_get_version (libevent compatibility) returned
+ a useless string instead of the expected version string
+ (patch by W.C.A. Wijngaards).
+
+3.51 Wed Dec 24 23:00:11 CET 2008
+ - fix a bug where an inotify watcher was added twice, causing
+ freezes on hash collisions (reported and analysed by Graham Leggett).
+ - new config symbol, EV_USE_CLOCK_SYSCALL, to make libev use
+ a direct syscall - slower, but no dependency on librt et al.
+ - assume negative return values != -1 signals success of port_getn
+ (http://cvs.epicsol.org/cgi/viewcvs.cgi/epic5/source/newio.c?rev=1.52)
+ (no known failure reports, but it doesn't hurt).
+ - fork detection in ev_embed now stops and restarts the watcher
+ automatically.
+ - EXPERIMENTAL: default the method to operator () in ev++.h,
+ to make it nicer to use functors (requested by Benedek László).
+ - fixed const object callbacks in ev++.h.
+ - replaced loop_ref argument of watcher.set (loop) by a direct
+ ev_loop * in ev++.h, to avoid clashes with functor patch.
+ - do not try to watch the empty string via inotify.
+ - inotify watchers could be leaked under certain circumstances.
+ - OS X 10.5 is actually even more broken than earlier versions,
+ so fall back to select on that piece of garbage.
+ - fixed some weirdness in the ev_embed documentation.
+
+3.49 Wed Nov 19 11:26:53 CET 2008
+ - ev_stat watchers will now use inotify as a mere hint on
+ kernels <2.6.25, or if the filesystem is not in the
+ "known to be good" list.
+ - better mingw32 compatibility (it's not as borked as native win32)
+ (analysed by Roger Pack).
+ - include stdio.h in the example program, as too many people are
+ confused by the weird C language otherwise. I guess the next thing
+ I get told is that the "..." ellipses in the examples don't compile
+ with their C compiler.
+
+3.48 Thu Oct 30 09:02:37 CET 2008
+ - further optimise away the EPOLL_CTL_ADD/MOD combo in the epoll
+ backend by assuming the kernel event mask hasn't changed if
+ ADD fails with EEXIST.
+ - work around spurious event notification bugs in epoll by using
+ a 32-bit generation counter. recreate kernel state if we receive
+ spurious notifications or unwanted events. this is very costly,
+ but I didn't come up with this horrible design.
+ - use memset to initialise most arrays now and do away with the
+ init functions.
+ - expand time-out strategies into a "Be smart about timeouts" section.
+ - drop the "struct" from all ev_watcher declarations in the
+ documentation and did other clarifications (yeah, it was a mistake
+ to have a struct AND a function called ev_loop).
+ - fix a bug where ev_default would not initialise the default
+ loop again after it was destroyed with ev_default_destroy.
+ - rename syserr to ev_syserr to avoid name clashes when embedding,
+ do similar changes for event.c.
+
+3.45 Tue Oct 21 21:59:26 CEST 2008
+ - disable inotify usage on linux <2.6.25, as it is broken
+ (reported by Yoann Vandoorselaere).
+ - ev_stat erroneously would try to add inotify watchers
+ even when inotify wasn't available (this should only
+ have a performance impact).
+ - ev_once now passes both timeout and io to the callback if both
+ occur concurrently, instead of giving timeouts precedence.
+ - disable EV_USE_INOTIFY when sys/inotify.h is too old.
+
+3.44 Mon Sep 29 05:18:39 CEST 2008
+ - embed watchers now automatically invoke ev_loop_fork on the
+ embedded loop when the parent loop forks.
+ - new function: ev_now_update (loop).
+ - verify_watcher was not marked static.
+ - improve the "associating..." manpage section.
+ - documentation tweaks here and there.
+
+3.43 Sun Jul 6 05:34:41 CEST 2008
+ - include more include files on windows to get struct _stati64
+ (reported by Chris Hulbert, but doesn't quite fix his issue).
+ - add missing #include <io.h> in ev.c on windows (reported by
+ Matt Tolton).
+
+3.42 Tue Jun 17 12:12:07 CEST 2008
+ - work around yet another windows bug: FD_SET actually adds fd's
+ multiple times to the fd_*SET*, despite official MSN docs claiming
+ otherwise. Reported and well-analysed by Matt Tolton.
+ - define NFDBITS to 0 when EV_SELECT_IS_WINSOCKET to make it compile
+ (reported any analysed by Chris Hulbert).
+ - fix a bug in ev_ebadf (this function is only used to catch
+ programming errors in the libev user). reported by Matt Tolton.
+ - fix a bug in fd_intern on win32 (could lead to compile errors
+ under some circumstances, but would work correctly if it compiles).
+ reported by Matt Tolton.
+ - (try to) work around missing lstat on windows.
+ - pass in the write fd set as except fd set under windows. windows
+ is so uncontrollably lame that it requires this. this means that
+ switching off oobinline is not supported (but tcp/ip doesn't
+ have oob, so that would be stupid anyways.
+ - use posix module symbol to auto-detect monotonic clock presence
+ and some other default values.
+
+3.41 Fri May 23 18:42:54 CEST 2008
+ - work around an obscure bug in winsocket select: if you
+ provide only empty fd sets then select returns WSAEINVAL. how sucky.
+ - improve timer scheduling stability and reduce use of time_epsilon.
+ - use 1-based 2-heap for EV_MINIMAL, simplifies code, reduces
+ codesize and makes for better cache-efficiency.
+ - use 3-based 4-heap for !EV_MINIMAL. this makes better use
+ of cpu cache lines and gives better growth behaviour than
+ 2-based heaps.
+ - cache timestamp within heap for !EV_MINIMAL, to avoid random
+ memory accesses.
+ - document/add EV_USE_4HEAP and EV_HEAP_CACHE_AT.
+ - fix a potential aliasing issue in ev_timer_again.
+ - add/document ev_periodic_at, retract direct access to ->at.
+ - improve ev_stat docs.
+ - add portability requirements section.
+ - fix manpage headers etc.
+ - normalise WSA error codes to lower range on windows.
+ - add consistency check code that can be called automatically
+ or on demand to check for internal structures (ev_loop_verify).
+
+3.31 Wed Apr 16 20:45:04 CEST 2008
+ - added last minute fix for ev_poll.c by Brandon Black.
+
+3.3 Wed Apr 16 19:04:10 CEST 2008
+ - event_base_loopexit should return 0 on success
+ (W.C.A. Wijngaards).
+ - added linux eventfd support.
+ - try to autodetect epoll and inotify support
+ by libc header version if not using autoconf.
+ - new symbols: EV_DEFAULT_UC and EV_DEFAULT_UC_.
+ - declare functions defined in ev.h as inline if
+ C99 or gcc are available.
+ - enable inlining with gcc versions 2 and 3.
+ - work around broken poll implementations potentially
+ not clearing revents field in ev_poll (Brandon Black)
+ (no such systems are known at this time).
+ - work around a bug in realloc on openbsd and darwin,
+ also makes the erroneous valgrind complaints
+ go away (noted by various people).
+ - fix ev_async_pending, add c++ wrapper for ev_async
+ (based on patch sent by Johannes Deisenhofer).
+ - add sensible set method to ev::embed.
+ - made integer constants type int in ev.h.
+
+3.2 Wed Apr 2 17:11:19 CEST 2008
+ - fix a 64 bit overflow issue in the select backend,
+ by using fd_mask instead of int for the mask.
+ - rename internal sighandler to avoid clash with very old perls.
+ - entering ev_loop will not clear the ONESHOT or NONBLOCKING
+ flags of any outer loops anymore.
+ - add ev_async_pending.
+
+3.1 Thu Mar 13 13:45:22 CET 2008
+ - implement ev_async watchers.
+ - only initialise signal pipe on demand.
+ - make use of sig_atomic_t configurable.
+ - improved documentation.
+
+3.0 Mon Jan 28 13:14:47 CET 2008
+ - API/ABI bump to version 3.0.
+ - ev++.h includes "ev.h" by default now, not <ev.h>.
+ - slightly improved documentation.
+ - speed up signal detection after a fork.
+ - only optionally return trace status changed in ev_child
+ watchers.
+ - experimental (and undocumented) loop wrappers for ev++.h.
+
+2.01 Tue Dec 25 08:04:41 CET 2007
+ - separate Changes file.
+ - fix ev_path_set => ev_stat_set typo.
+ - remove event_compat.h from the libev tarball.
+ - change how include files are found.
+ - doc updates.
+ - update licenses, explicitly allow for GPL relicensing.
+
+2.0 Sat Dec 22 17:47:03 CET 2007
+ - new ev_sleep, ev_set_(io|timeout)_collect_interval.
+ - removed epoll from embeddable fd set.
+ - fix embed watchers.
+ - renamed ev_embed.loop to other.
+ - added exported Symbol tables.
+ - undefine member wrapper macros at the end of ev.c.
+ - respect EV_H in ev++.h.
+
+1.86 Tue Dec 18 02:36:57 CET 2007
+ - fix memleak on loop destroy (not relevant for perl).
+
+1.85 Fri Dec 14 20:32:40 CET 2007
+ - fix some aliasing issues w.r.t. timers and periodics
+ (not relevant for perl).
+
+(for historic versions refer to EV/Changes, found in the Perl interface)
+
+0.1 Wed Oct 31 21:31:48 CET 2007
+ - original version; hacked together in <24h.
+
--- /dev/null
+All files in libev are Copyright (C)2007,2008,2009 Marc Alexander Lehmann.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the following
+ disclaimer in the documentation and/or other materials provided
+ with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Alternatively, the contents of this package may be used under the terms
+of the GNU General Public License ("GPL") version 2 or any later version,
+in which case the provisions of the GPL are applicable instead of the
+above. If you wish to allow the use of your version of this package only
+under the terms of the GPL and not to allow others to use your version of
+this file under the BSD license, indicate your decision by deleting the
+provisions above and replace them with the notice and other provisions
+required by the GPL in this and the other files of this package. If you do
+not delete the provisions above, a recipient may use your version of this
+file under either the BSD or the GPL.
--- /dev/null
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+ -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
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+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- /dev/null
+libev is a high-performance event loop/event model with lots of features.
+(see benchmark at http://libev.schmorp.de/bench.html)
+
+
+ABOUT
+
+ Homepage: http://software.schmorp.de/pkg/libev
+ Mailinglist: libev@lists.schmorp.de
+ http://lists.schmorp.de/cgi-bin/mailman/listinfo/libev
+ Library Documentation: http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod
+
+ Libev is modelled (very losely) after libevent and the Event perl
+ module, but is faster, scales better and is more correct, and also more
+ featureful. And also smaller. Yay.
+
+ Some of the specialties of libev not commonly found elsewhere are:
+
+ - extensive and detailed, readable documentation (not doxygen garbage).
+ - fully supports fork, can detect fork in various ways and automatically
+ re-arms kernel mechanisms that do not support fork.
+ - highly optimised select, poll, epoll, kqueue and event ports backends.
+ - filesystem object (path) watching (with optional linux inotify support).
+ - wallclock-based times (using absolute time, cron-like).
+ - relative timers/timeouts (handle time jumps).
+ - fast intra-thread communication between multiple
+ event loops (with optional fast linux eventfd backend).
+ - extremely easy to embed.
+ - very small codebase, no bloated library.
+ - fully extensible by being able to plug into the event loop,
+ integrate other event loops, integrate other event loop users.
+ - very little memory use (small watchers, small event loop data).
+ - optional C++ interface allowing method and function callbacks
+ at no extra memory or runtime overhead.
+ - optional Perl interface with similar characteristics (capable
+ of running Glib/Gtk2 on libev, interfaces with Net::SNMP and
+ libadns).
+ - support for other languages (multiple C++ interfaces, D, Ruby,
+ Python) available from third-parties.
+
+ Examples of programs that embed libev: the EV perl module,
+ rxvt-unicode, gvpe (GNU Virtual Private Ethernet), the Deliantra MMORPG
+ server (http://www.deliantra.net/), Rubinius (a next-generation Ruby
+ VM), the Ebb web server, the Rev event toolkit.
+
+
+CONTRIBUTORS
+
+ libev was written and designed by Marc Lehmann and Emanuele Giaquinta.
+
+ The following people sent in patches or made other noteworthy
+ contributions to the design (for minor patches, see the Changes
+ file. If I forgot to include you, please shout at me, it was an
+ accident):
+
+ W.C.A. Wijngaards
+ Christopher Layne
+ Chris Brody
+
--- /dev/null
+# generated automatically by aclocal 1.11.1 -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+m4_ifndef([AC_AUTOCONF_VERSION],
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+If you have problems, you may need to regenerate the build system entirely.
+To do so, use the procedure documented by the package, typically `autoreconf'.])])
+
+# libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
+#
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+# 2006, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gordon Matzigkeit, 1996
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+m4_define([_LT_COPYING], [dnl
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+# 2006, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gordon Matzigkeit, 1996
+#
+# This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING. If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
+# obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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+
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+_LT_SET_OPTIONS([$0], [$1])
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+ *) break;;
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+
+
+# _LT_FILEUTILS_DEFAULTS
+# ----------------------
+# It is okay to use these file commands and assume they have been set
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+m4_defun([_LT_FILEUTILS_DEFAULTS],
+[: ${CP="cp -f"}
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+: ${RM="rm -f"}
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+
+
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+m4_require([_LT_CHECK_MAGIC_METHOD])dnl
+m4_require([_LT_CMD_OLD_ARCHIVE])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
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+# See if we are running on zsh, and set the options which allow our
+# commands through without removal of \ escapes INIT.
+if test -n "\${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
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+
+_LT_CHECK_OBJDIR
+
+m4_require([_LT_TAG_COMPILER])dnl
+_LT_PROG_ECHO_BACKSLASH
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+aix3*)
+ # AIX sometimes has problems with the GCC collect2 program. For some
+ # reason, if we set the COLLECT_NAMES environment variable, the problems
+ # vanish in a puff of smoke.
+ if test "X${COLLECT_NAMES+set}" != Xset; then
+ COLLECT_NAMES=
+ export COLLECT_NAMES
+ fi
+ ;;
+esac
+
+# Sed substitution that helps us do robust quoting. It backslashifies
+# metacharacters that are still active within double-quoted strings.
+sed_quote_subst='s/\([["`$\\]]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
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+
+# Sed substitution to delay expansion of an escaped shell variable in a
+# double_quote_subst'ed string.
+delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
+
+# Sed substitution to delay expansion of an escaped single quote.
+delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
+
+# Sed substitution to avoid accidental globbing in evaled expressions
+no_glob_subst='s/\*/\\\*/g'
+
+# Global variables:
+ofile=libtool
+can_build_shared=yes
+
+# All known linkers require a `.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+
+with_gnu_ld="$lt_cv_prog_gnu_ld"
+
+old_CC="$CC"
+old_CFLAGS="$CFLAGS"
+
+# Set sane defaults for various variables
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+test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
+test -z "$LD" && LD=ld
+test -z "$ac_objext" && ac_objext=o
+
+_LT_CC_BASENAME([$compiler])
+
+# Only perform the check for file, if the check method requires it
+test -z "$MAGIC_CMD" && MAGIC_CMD=file
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+file_magic*)
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+ fi
+ ;;
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+
+# Use C for the default configuration in the libtool script
+LT_SUPPORTED_TAG([CC])
+_LT_LANG_C_CONFIG
+_LT_LANG_DEFAULT_CONFIG
+_LT_CONFIG_COMMANDS
+])# _LT_SETUP
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+
+# _LT_PROG_LTMAIN
+# ---------------
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+# now that we use AC_CONFIG_COMMANDS to generate libtool. Notably,
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+ltmain="$ac_aux_dir/ltmain.sh"
+])# _LT_PROG_LTMAIN
+
+
+
+# So that we can recreate a full libtool script including additional
+# tags, we accumulate the chunks of code to send to AC_CONFIG_COMMANDS
+# in macros and then make a single call at the end using the `libtool'
+# label.
+
+
+# _LT_CONFIG_LIBTOOL_INIT([INIT-COMMANDS])
+# ----------------------------------------
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+
+# Initialize.
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+
+
+# _LT_CONFIG_SAVE_COMMANDS([COMMANDS], [INIT_COMMANDS])
+# -----------------------------------------------------
+m4_defun([_LT_CONFIG_SAVE_COMMANDS],
+[_LT_CONFIG_LIBTOOL([$1])
+_LT_CONFIG_LIBTOOL_INIT([$2])
+])
+
+
+# _LT_FORMAT_COMMENT([COMMENT])
+# -----------------------------
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+
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+
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+# _LT_DECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION], [IS-TAGGED?])
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+# CONFIGNAME is the name given to the value in the libtool script.
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+ lt_dict_add_subkey([lt_decl_dict], [$2], [value], [$3])
+ m4_ifval([$4],
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+ lt_dict_add_subkey([lt_decl_dict], [$2],
+ [tagged?], [m4_ifval([$5], [yes], [no])])])
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+
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+# _LT_TAGDECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION])
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+m4_define([_LT_TAGDECL], [_LT_DECL([$1], [$2], [$3], [$4], [yes])])
+
+
+# lt_decl_tag_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_tag_varnames],
+[_lt_decl_filter([tagged?], [yes], $@)])
+
+
+# _lt_decl_filter(SUBKEY, VALUE, [SEPARATOR], [VARNAME1..])
+# ---------------------------------------------------------
+m4_define([_lt_decl_filter],
+[m4_case([$#],
+ [0], [m4_fatal([$0: too few arguments: $#])],
+ [1], [m4_fatal([$0: too few arguments: $#: $1])],
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+
+
+# lt_decl_quote_varnames([SEPARATOR], [VARNAME1...])
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+m4_define([lt_decl_quote_varnames],
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+
+
+# lt_decl_dquote_varnames([SEPARATOR], [VARNAME1...])
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+
+
+# lt_decl_varnames_tagged([SEPARATOR], [VARNAME1...])
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+m4_define([_lt_decl_varnames_tagged],
+[m4_ifval([$3], [lt_combine([$1], [$2], [_], $3)])])
+
+
+# lt_decl_all_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_all_varnames],
+[_$0(m4_quote(m4_default([$1], [[, ]])),
+ m4_if([$2], [],
+ m4_quote(lt_decl_varnames),
+ m4_quote(m4_shift($@))))[]dnl
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+
+# _LT_CONFIG_STATUS_DECLARATIONS
+# ------------------------------
+# We delimit libtool config variables with single quotes, so when
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+m4_defun([_LT_CONFIG_STATUS_DECLARATIONS],
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+# _LT_LIBTOOL_DECLARE(VARNAME, [TAG])
+# -----------------------------------
+# Extract the dictionary values for VARNAME (optionally with TAG) and
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+#
+# # Some comment about what VAR is for.
+# visible_name=$lt_internal_name
+m4_define([_LT_LIBTOOL_DECLARE],
+[_LT_FORMAT_COMMENT(m4_quote(lt_dict_fetch([lt_decl_dict], [$1],
+ [description])))[]dnl
+m4_pushdef([_libtool_name],
+ m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [libtool_name])))[]dnl
+m4_case(m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [value])),
+ [0], [_libtool_name=[$]$1],
+ [1], [_libtool_name=$lt_[]$1],
+ [2], [_libtool_name=$lt_[]$1],
+ [_libtool_name=lt_dict_fetch([lt_decl_dict], [$1], [value])])[]dnl
+m4_ifval([$2], [_$2])[]m4_popdef([_libtool_name])[]dnl
+])
+
+
+# _LT_LIBTOOL_CONFIG_VARS
+# -----------------------
+# Produce commented declarations of non-tagged libtool config variables
+# suitable for insertion in the LIBTOOL CONFIG section of the `libtool'
+# script. Tagged libtool config variables (even for the LIBTOOL CONFIG
+# section) are produced by _LT_LIBTOOL_TAG_VARS.
+m4_defun([_LT_LIBTOOL_CONFIG_VARS],
+[m4_foreach([_lt_var],
+ m4_quote(_lt_decl_filter([tagged?], [no], [], lt_decl_varnames)),
+ [m4_n([_LT_LIBTOOL_DECLARE(_lt_var)])])])
+
+
+# _LT_LIBTOOL_TAG_VARS(TAG)
+# -------------------------
+m4_define([_LT_LIBTOOL_TAG_VARS],
+[m4_foreach([_lt_var], m4_quote(lt_decl_tag_varnames),
+ [m4_n([_LT_LIBTOOL_DECLARE(_lt_var, [$1])])])])
+
+
+# _LT_TAGVAR(VARNAME, [TAGNAME])
+# ------------------------------
+m4_define([_LT_TAGVAR], [m4_ifval([$2], [$1_$2], [$1])])
+
+
+# _LT_CONFIG_COMMANDS
+# -------------------
+# Send accumulated output to $CONFIG_STATUS. Thanks to the lists of
+# variables for single and double quote escaping we saved from calls
+# to _LT_DECL, we can put quote escaped variables declarations
+# into `config.status', and then the shell code to quote escape them in
+# for loops in `config.status'. Finally, any additional code accumulated
+# from calls to _LT_CONFIG_LIBTOOL_INIT is expanded.
+m4_defun([_LT_CONFIG_COMMANDS],
+[AC_PROVIDE_IFELSE([LT_OUTPUT],
+ dnl If the libtool generation code has been placed in $CONFIG_LT,
+ dnl instead of duplicating it all over again into config.status,
+ dnl then we will have config.status run $CONFIG_LT later, so it
+ dnl needs to know what name is stored there:
+ [AC_CONFIG_COMMANDS([libtool],
+ [$SHELL $CONFIG_LT || AS_EXIT(1)], [CONFIG_LT='$CONFIG_LT'])],
+ dnl If the libtool generation code is destined for config.status,
+ dnl expand the accumulated commands and init code now:
+ [AC_CONFIG_COMMANDS([libtool],
+ [_LT_OUTPUT_LIBTOOL_COMMANDS], [_LT_OUTPUT_LIBTOOL_COMMANDS_INIT])])
+])#_LT_CONFIG_COMMANDS
+
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS_INIT],
+[
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+sed_quote_subst='$sed_quote_subst'
+double_quote_subst='$double_quote_subst'
+delay_variable_subst='$delay_variable_subst'
+_LT_CONFIG_STATUS_DECLARATIONS
+LTCC='$LTCC'
+LTCFLAGS='$LTCFLAGS'
+compiler='$compiler_DEFAULT'
+
+# Quote evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_quote_varnames); do
+ case \`eval \\\\\$ECHO "X\\\\\$\$var"\` in
+ *[[\\\\\\\`\\"\\\$]]*)
+ eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"X\\\$\$var\\" | \\\$Xsed -e \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
+ ;;
+ *)
+ eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+ ;;
+ esac
+done
+
+# Double-quote double-evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_dquote_varnames); do
+ case \`eval \\\\\$ECHO "X\\\\\$\$var"\` in
+ *[[\\\\\\\`\\"\\\$]]*)
+ eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"X\\\$\$var\\" | \\\$Xsed -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
+ ;;
+ *)
+ eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+ ;;
+ esac
+done
+
+# Fix-up fallback echo if it was mangled by the above quoting rules.
+case \$lt_ECHO in
+*'\\\[$]0 --fallback-echo"')dnl "
+ lt_ECHO=\`\$ECHO "X\$lt_ECHO" | \$Xsed -e 's/\\\\\\\\\\\\\\\[$]0 --fallback-echo"\[$]/\[$]0 --fallback-echo"/'\`
+ ;;
+esac
+
+_LT_OUTPUT_LIBTOOL_INIT
+])
+
+
+# LT_OUTPUT
+# ---------
+# This macro allows early generation of the libtool script (before
+# AC_OUTPUT is called), incase it is used in configure for compilation
+# tests.
+AC_DEFUN([LT_OUTPUT],
+[: ${CONFIG_LT=./config.lt}
+AC_MSG_NOTICE([creating $CONFIG_LT])
+cat >"$CONFIG_LT" <<_LTEOF
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate a libtool stub with the current configuration.
+
+lt_cl_silent=false
+SHELL=\${CONFIG_SHELL-$SHELL}
+_LTEOF
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+AS_SHELL_SANITIZE
+_AS_PREPARE
+
+exec AS_MESSAGE_FD>&1
+exec AS_MESSAGE_LOG_FD>>config.log
+{
+ echo
+ AS_BOX([Running $as_me.])
+} >&AS_MESSAGE_LOG_FD
+
+lt_cl_help="\
+\`$as_me' creates a local libtool stub from the current configuration,
+for use in further configure time tests before the real libtool is
+generated.
+
+Usage: $[0] [[OPTIONS]]
+
+ -h, --help print this help, then exit
+ -V, --version print version number, then exit
+ -q, --quiet do not print progress messages
+ -d, --debug don't remove temporary files
+
+Report bugs to <bug-libtool@gnu.org>."
+
+lt_cl_version="\
+m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])config.lt[]dnl
+m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
+configured by $[0], generated by m4_PACKAGE_STRING.
+
+Copyright (C) 2008 Free Software Foundation, Inc.
+This config.lt script is free software; the Free Software Foundation
+gives unlimited permision to copy, distribute and modify it."
+
+while test $[#] != 0
+do
+ case $[1] in
+ --version | --v* | -V )
+ echo "$lt_cl_version"; exit 0 ;;
+ --help | --h* | -h )
+ echo "$lt_cl_help"; exit 0 ;;
+ --debug | --d* | -d )
+ debug=: ;;
+ --quiet | --q* | --silent | --s* | -q )
+ lt_cl_silent=: ;;
+
+ -*) AC_MSG_ERROR([unrecognized option: $[1]
+Try \`$[0] --help' for more information.]) ;;
+
+ *) AC_MSG_ERROR([unrecognized argument: $[1]
+Try \`$[0] --help' for more information.]) ;;
+ esac
+ shift
+done
+
+if $lt_cl_silent; then
+ exec AS_MESSAGE_FD>/dev/null
+fi
+_LTEOF
+
+cat >>"$CONFIG_LT" <<_LTEOF
+_LT_OUTPUT_LIBTOOL_COMMANDS_INIT
+_LTEOF
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+AC_MSG_NOTICE([creating $ofile])
+_LT_OUTPUT_LIBTOOL_COMMANDS
+AS_EXIT(0)
+_LTEOF
+chmod +x "$CONFIG_LT"
+
+# configure is writing to config.log, but config.lt does its own redirection,
+# appending to config.log, which fails on DOS, as config.log is still kept
+# open by configure. Here we exec the FD to /dev/null, effectively closing
+# config.log, so it can be properly (re)opened and appended to by config.lt.
+if test "$no_create" != yes; then
+ lt_cl_success=:
+ test "$silent" = yes &&
+ lt_config_lt_args="$lt_config_lt_args --quiet"
+ exec AS_MESSAGE_LOG_FD>/dev/null
+ $SHELL "$CONFIG_LT" $lt_config_lt_args || lt_cl_success=false
+ exec AS_MESSAGE_LOG_FD>>config.log
+ $lt_cl_success || AS_EXIT(1)
+fi
+])# LT_OUTPUT
+
+
+# _LT_CONFIG(TAG)
+# ---------------
+# If TAG is the built-in tag, create an initial libtool script with a
+# default configuration from the untagged config vars. Otherwise add code
+# to config.status for appending the configuration named by TAG from the
+# matching tagged config vars.
+m4_defun([_LT_CONFIG],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_CONFIG_SAVE_COMMANDS([
+ m4_define([_LT_TAG], m4_if([$1], [], [C], [$1]))dnl
+ m4_if(_LT_TAG, [C], [
+ # See if we are running on zsh, and set the options which allow our
+ # commands through without removal of \ escapes.
+ if test -n "${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+ fi
+
+ cfgfile="${ofile}T"
+ trap "$RM \"$cfgfile\"; exit 1" 1 2 15
+ $RM "$cfgfile"
+
+ cat <<_LT_EOF >> "$cfgfile"
+#! $SHELL
+
+# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
+# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
+# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+# NOTE: Changes made to this file will be lost: look at ltmain.sh.
+#
+_LT_COPYING
+_LT_LIBTOOL_TAGS
+
+# ### BEGIN LIBTOOL CONFIG
+_LT_LIBTOOL_CONFIG_VARS
+_LT_LIBTOOL_TAG_VARS
+# ### END LIBTOOL CONFIG
+
+_LT_EOF
+
+ case $host_os in
+ aix3*)
+ cat <<\_LT_EOF >> "$cfgfile"
+# AIX sometimes has problems with the GCC collect2 program. For some
+# reason, if we set the COLLECT_NAMES environment variable, the problems
+# vanish in a puff of smoke.
+if test "X${COLLECT_NAMES+set}" != Xset; then
+ COLLECT_NAMES=
+ export COLLECT_NAMES
+fi
+_LT_EOF
+ ;;
+ esac
+
+ _LT_PROG_LTMAIN
+
+ # We use sed instead of cat because bash on DJGPP gets confused if
+ # if finds mixed CR/LF and LF-only lines. Since sed operates in
+ # text mode, it properly converts lines to CR/LF. This bash problem
+ # is reportedly fixed, but why not run on old versions too?
+ sed '/^# Generated shell functions inserted here/q' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
+
+ _LT_PROG_XSI_SHELLFNS
+
+ sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
+
+ mv -f "$cfgfile" "$ofile" ||
+ (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
+ chmod +x "$ofile"
+],
+[cat <<_LT_EOF >> "$ofile"
+
+dnl Unfortunately we have to use $1 here, since _LT_TAG is not expanded
+dnl in a comment (ie after a #).
+# ### BEGIN LIBTOOL TAG CONFIG: $1
+_LT_LIBTOOL_TAG_VARS(_LT_TAG)
+# ### END LIBTOOL TAG CONFIG: $1
+_LT_EOF
+])dnl /m4_if
+],
+[m4_if([$1], [], [
+ PACKAGE='$PACKAGE'
+ VERSION='$VERSION'
+ TIMESTAMP='$TIMESTAMP'
+ RM='$RM'
+ ofile='$ofile'], [])
+])dnl /_LT_CONFIG_SAVE_COMMANDS
+])# _LT_CONFIG
+
+
+# LT_SUPPORTED_TAG(TAG)
+# ---------------------
+# Trace this macro to discover what tags are supported by the libtool
+# --tag option, using:
+# autoconf --trace 'LT_SUPPORTED_TAG:$1'
+AC_DEFUN([LT_SUPPORTED_TAG], [])
+
+
+# C support is built-in for now
+m4_define([_LT_LANG_C_enabled], [])
+m4_define([_LT_TAGS], [])
+
+
+# LT_LANG(LANG)
+# -------------
+# Enable libtool support for the given language if not already enabled.
+AC_DEFUN([LT_LANG],
+[AC_BEFORE([$0], [LT_OUTPUT])dnl
+m4_case([$1],
+ [C], [_LT_LANG(C)],
+ [C++], [_LT_LANG(CXX)],
+ [Java], [_LT_LANG(GCJ)],
+ [Fortran 77], [_LT_LANG(F77)],
+ [Fortran], [_LT_LANG(FC)],
+ [Windows Resource], [_LT_LANG(RC)],
+ [m4_ifdef([_LT_LANG_]$1[_CONFIG],
+ [_LT_LANG($1)],
+ [m4_fatal([$0: unsupported language: "$1"])])])dnl
+])# LT_LANG
+
+
+# _LT_LANG(LANGNAME)
+# ------------------
+m4_defun([_LT_LANG],
+[m4_ifdef([_LT_LANG_]$1[_enabled], [],
+ [LT_SUPPORTED_TAG([$1])dnl
+ m4_append([_LT_TAGS], [$1 ])dnl
+ m4_define([_LT_LANG_]$1[_enabled], [])dnl
+ _LT_LANG_$1_CONFIG($1)])dnl
+])# _LT_LANG
+
+
+# _LT_LANG_DEFAULT_CONFIG
+# -----------------------
+m4_defun([_LT_LANG_DEFAULT_CONFIG],
+[AC_PROVIDE_IFELSE([AC_PROG_CXX],
+ [LT_LANG(CXX)],
+ [m4_define([AC_PROG_CXX], defn([AC_PROG_CXX])[LT_LANG(CXX)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_F77],
+ [LT_LANG(F77)],
+ [m4_define([AC_PROG_F77], defn([AC_PROG_F77])[LT_LANG(F77)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_FC],
+ [LT_LANG(FC)],
+ [m4_define([AC_PROG_FC], defn([AC_PROG_FC])[LT_LANG(FC)])])
+
+dnl The call to [A][M_PROG_GCJ] is quoted like that to stop aclocal
+dnl pulling things in needlessly.
+AC_PROVIDE_IFELSE([AC_PROG_GCJ],
+ [LT_LANG(GCJ)],
+ [AC_PROVIDE_IFELSE([A][M_PROG_GCJ],
+ [LT_LANG(GCJ)],
+ [AC_PROVIDE_IFELSE([LT_PROG_GCJ],
+ [LT_LANG(GCJ)],
+ [m4_ifdef([AC_PROG_GCJ],
+ [m4_define([AC_PROG_GCJ], defn([AC_PROG_GCJ])[LT_LANG(GCJ)])])
+ m4_ifdef([A][M_PROG_GCJ],
+ [m4_define([A][M_PROG_GCJ], defn([A][M_PROG_GCJ])[LT_LANG(GCJ)])])
+ m4_ifdef([LT_PROG_GCJ],
+ [m4_define([LT_PROG_GCJ], defn([LT_PROG_GCJ])[LT_LANG(GCJ)])])])])])
+
+AC_PROVIDE_IFELSE([LT_PROG_RC],
+ [LT_LANG(RC)],
+ [m4_define([LT_PROG_RC], defn([LT_PROG_RC])[LT_LANG(RC)])])
+])# _LT_LANG_DEFAULT_CONFIG
+
+# Obsolete macros:
+AU_DEFUN([AC_LIBTOOL_CXX], [LT_LANG(C++)])
+AU_DEFUN([AC_LIBTOOL_F77], [LT_LANG(Fortran 77)])
+AU_DEFUN([AC_LIBTOOL_FC], [LT_LANG(Fortran)])
+AU_DEFUN([AC_LIBTOOL_GCJ], [LT_LANG(Java)])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_CXX], [])
+dnl AC_DEFUN([AC_LIBTOOL_F77], [])
+dnl AC_DEFUN([AC_LIBTOOL_FC], [])
+dnl AC_DEFUN([AC_LIBTOOL_GCJ], [])
+
+
+# _LT_TAG_COMPILER
+# ----------------
+m4_defun([_LT_TAG_COMPILER],
+[AC_REQUIRE([AC_PROG_CC])dnl
+
+_LT_DECL([LTCC], [CC], [1], [A C compiler])dnl
+_LT_DECL([LTCFLAGS], [CFLAGS], [1], [LTCC compiler flags])dnl
+_LT_TAGDECL([CC], [compiler], [1], [A language specific compiler])dnl
+_LT_TAGDECL([with_gcc], [GCC], [0], [Is the compiler the GNU compiler?])dnl
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+])# _LT_TAG_COMPILER
+
+
+# _LT_COMPILER_BOILERPLATE
+# ------------------------
+# Check for compiler boilerplate output or warnings with
+# the simple compiler test code.
+m4_defun([_LT_COMPILER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_compile_test_code" >conftest.$ac_ext
+eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_compiler_boilerplate=`cat conftest.err`
+$RM conftest*
+])# _LT_COMPILER_BOILERPLATE
+
+
+# _LT_LINKER_BOILERPLATE
+# ----------------------
+# Check for linker boilerplate output or warnings with
+# the simple link test code.
+m4_defun([_LT_LINKER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_link_test_code" >conftest.$ac_ext
+eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_linker_boilerplate=`cat conftest.err`
+$RM -r conftest*
+])# _LT_LINKER_BOILERPLATE
+
+# _LT_REQUIRED_DARWIN_CHECKS
+# -------------------------
+m4_defun_once([_LT_REQUIRED_DARWIN_CHECKS],[
+ case $host_os in
+ rhapsody* | darwin*)
+ AC_CHECK_TOOL([DSYMUTIL], [dsymutil], [:])
+ AC_CHECK_TOOL([NMEDIT], [nmedit], [:])
+ AC_CHECK_TOOL([LIPO], [lipo], [:])
+ AC_CHECK_TOOL([OTOOL], [otool], [:])
+ AC_CHECK_TOOL([OTOOL64], [otool64], [:])
+ _LT_DECL([], [DSYMUTIL], [1],
+ [Tool to manipulate archived DWARF debug symbol files on Mac OS X])
+ _LT_DECL([], [NMEDIT], [1],
+ [Tool to change global to local symbols on Mac OS X])
+ _LT_DECL([], [LIPO], [1],
+ [Tool to manipulate fat objects and archives on Mac OS X])
+ _LT_DECL([], [OTOOL], [1],
+ [ldd/readelf like tool for Mach-O binaries on Mac OS X])
+ _LT_DECL([], [OTOOL64], [1],
+ [ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4])
+
+ AC_CACHE_CHECK([for -single_module linker flag],[lt_cv_apple_cc_single_mod],
+ [lt_cv_apple_cc_single_mod=no
+ if test -z "${LT_MULTI_MODULE}"; then
+ # By default we will add the -single_module flag. You can override
+ # by either setting the environment variable LT_MULTI_MODULE
+ # non-empty at configure time, or by adding -multi_module to the
+ # link flags.
+ rm -rf libconftest.dylib*
+ echo "int foo(void){return 1;}" > conftest.c
+ echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+-dynamiclib -Wl,-single_module conftest.c" >&AS_MESSAGE_LOG_FD
+ $LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+ -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
+ _lt_result=$?
+ if test -f libconftest.dylib && test ! -s conftest.err && test $_lt_result = 0; then
+ lt_cv_apple_cc_single_mod=yes
+ else
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ fi
+ rm -rf libconftest.dylib*
+ rm -f conftest.*
+ fi])
+ AC_CACHE_CHECK([for -exported_symbols_list linker flag],
+ [lt_cv_ld_exported_symbols_list],
+ [lt_cv_ld_exported_symbols_list=no
+ save_LDFLAGS=$LDFLAGS
+ echo "_main" > conftest.sym
+ LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+ [lt_cv_ld_exported_symbols_list=yes],
+ [lt_cv_ld_exported_symbols_list=no])
+ LDFLAGS="$save_LDFLAGS"
+ ])
+ case $host_os in
+ rhapsody* | darwin1.[[012]])
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
+ darwin1.*)
+ _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+ darwin*) # darwin 5.x on
+ # if running on 10.5 or later, the deployment target defaults
+ # to the OS version, if on x86, and 10.4, the deployment
+ # target defaults to 10.4. Don't you love it?
+ case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
+ 10.0,*86*-darwin8*|10.0,*-darwin[[91]]*)
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+ 10.[[012]]*)
+ _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+ 10.*)
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+ esac
+ ;;
+ esac
+ if test "$lt_cv_apple_cc_single_mod" = "yes"; then
+ _lt_dar_single_mod='$single_module'
+ fi
+ if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
+ _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
+ else
+ _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
+ fi
+ if test "$DSYMUTIL" != ":"; then
+ _lt_dsymutil='~$DSYMUTIL $lib || :'
+ else
+ _lt_dsymutil=
+ fi
+ ;;
+ esac
+])
+
+
+# _LT_DARWIN_LINKER_FEATURES
+# --------------------------
+# Checks for linker and compiler features on darwin
+m4_defun([_LT_DARWIN_LINKER_FEATURES],
+[
+ m4_require([_LT_REQUIRED_DARWIN_CHECKS])
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_automatic, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=''
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(allow_undefined_flag, $1)="$_lt_dar_allow_undefined"
+ case $cc_basename in
+ ifort*) _lt_dar_can_shared=yes ;;
+ *) _lt_dar_can_shared=$GCC ;;
+ esac
+ if test "$_lt_dar_can_shared" = "yes"; then
+ output_verbose_link_cmd=echo
+ _LT_TAGVAR(archive_cmds, $1)="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+ _LT_TAGVAR(module_cmds, $1)="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+ _LT_TAGVAR(module_expsym_cmds, $1)="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+ m4_if([$1], [CXX],
+[ if test "$lt_cv_apple_cc_single_mod" != "yes"; then
+ _LT_TAGVAR(archive_cmds, $1)="\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dsymutil}"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dar_export_syms}${_lt_dsymutil}"
+ fi
+],[])
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+])
+
+# _LT_SYS_MODULE_PATH_AIX
+# -----------------------
+# Links a minimal program and checks the executable
+# for the system default hardcoded library path. In most cases,
+# this is /usr/lib:/lib, but when the MPI compilers are used
+# the location of the communication and MPI libs are included too.
+# If we don't find anything, use the default library path according
+# to the aix ld manual.
+m4_defun([_LT_SYS_MODULE_PATH_AIX],
+[m4_require([_LT_DECL_SED])dnl
+AC_LINK_IFELSE(AC_LANG_PROGRAM,[
+lt_aix_libpath_sed='
+ /Import File Strings/,/^$/ {
+ /^0/ {
+ s/^0 *\(.*\)$/\1/
+ p
+ }
+ }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+ aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi],[])
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+])# _LT_SYS_MODULE_PATH_AIX
+
+
+# _LT_SHELL_INIT(ARG)
+# -------------------
+m4_define([_LT_SHELL_INIT],
+[ifdef([AC_DIVERSION_NOTICE],
+ [AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)],
+ [AC_DIVERT_PUSH(NOTICE)])
+$1
+AC_DIVERT_POP
+])# _LT_SHELL_INIT
+
+
+# _LT_PROG_ECHO_BACKSLASH
+# -----------------------
+# Add some code to the start of the generated configure script which
+# will find an echo command which doesn't interpret backslashes.
+m4_defun([_LT_PROG_ECHO_BACKSLASH],
+[_LT_SHELL_INIT([
+# Check that we are running under the correct shell.
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+case X$lt_ECHO in
+X*--fallback-echo)
+ # Remove one level of quotation (which was required for Make).
+ ECHO=`echo "$lt_ECHO" | sed 's,\\\\\[$]\\[$]0,'[$]0','`
+ ;;
+esac
+
+ECHO=${lt_ECHO-echo}
+if test "X[$]1" = X--no-reexec; then
+ # Discard the --no-reexec flag, and continue.
+ shift
+elif test "X[$]1" = X--fallback-echo; then
+ # Avoid inline document here, it may be left over
+ :
+elif test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' ; then
+ # Yippee, $ECHO works!
+ :
+else
+ # Restart under the correct shell.
+ exec $SHELL "[$]0" --no-reexec ${1+"[$]@"}
+fi
+
+if test "X[$]1" = X--fallback-echo; then
+ # used as fallback echo
+ shift
+ cat <<_LT_EOF
+[$]*
+_LT_EOF
+ exit 0
+fi
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+if test -z "$lt_ECHO"; then
+ if test "X${echo_test_string+set}" != Xset; then
+ # find a string as large as possible, as long as the shell can cope with it
+ for cmd in 'sed 50q "[$]0"' 'sed 20q "[$]0"' 'sed 10q "[$]0"' 'sed 2q "[$]0"' 'echo test'; do
+ # expected sizes: less than 2Kb, 1Kb, 512 bytes, 16 bytes, ...
+ if { echo_test_string=`eval $cmd`; } 2>/dev/null &&
+ { test "X$echo_test_string" = "X$echo_test_string"; } 2>/dev/null
+ then
+ break
+ fi
+ done
+ fi
+
+ if test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ $ECHO "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ :
+ else
+ # The Solaris, AIX, and Digital Unix default echo programs unquote
+ # backslashes. This makes it impossible to quote backslashes using
+ # echo "$something" | sed 's/\\/\\\\/g'
+ #
+ # So, first we look for a working echo in the user's PATH.
+
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for dir in $PATH /usr/ucb; do
+ IFS="$lt_save_ifs"
+ if (test -f $dir/echo || test -f $dir/echo$ac_exeext) &&
+ test "X`($dir/echo '\t') 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`($dir/echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ ECHO="$dir/echo"
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+
+ if test "X$ECHO" = Xecho; then
+ # We didn't find a better echo, so look for alternatives.
+ if test "X`{ print -r '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ print -r "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ # This shell has a builtin print -r that does the trick.
+ ECHO='print -r'
+ elif { test -f /bin/ksh || test -f /bin/ksh$ac_exeext; } &&
+ test "X$CONFIG_SHELL" != X/bin/ksh; then
+ # If we have ksh, try running configure again with it.
+ ORIGINAL_CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+ export ORIGINAL_CONFIG_SHELL
+ CONFIG_SHELL=/bin/ksh
+ export CONFIG_SHELL
+ exec $CONFIG_SHELL "[$]0" --no-reexec ${1+"[$]@"}
+ else
+ # Try using printf.
+ ECHO='printf %s\n'
+ if test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ $ECHO "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ # Cool, printf works
+ :
+ elif echo_testing_string=`($ORIGINAL_CONFIG_SHELL "[$]0" --fallback-echo '\t') 2>/dev/null` &&
+ test "X$echo_testing_string" = 'X\t' &&
+ echo_testing_string=`($ORIGINAL_CONFIG_SHELL "[$]0" --fallback-echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ CONFIG_SHELL=$ORIGINAL_CONFIG_SHELL
+ export CONFIG_SHELL
+ SHELL="$CONFIG_SHELL"
+ export SHELL
+ ECHO="$CONFIG_SHELL [$]0 --fallback-echo"
+ elif echo_testing_string=`($CONFIG_SHELL "[$]0" --fallback-echo '\t') 2>/dev/null` &&
+ test "X$echo_testing_string" = 'X\t' &&
+ echo_testing_string=`($CONFIG_SHELL "[$]0" --fallback-echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ ECHO="$CONFIG_SHELL [$]0 --fallback-echo"
+ else
+ # maybe with a smaller string...
+ prev=:
+
+ for cmd in 'echo test' 'sed 2q "[$]0"' 'sed 10q "[$]0"' 'sed 20q "[$]0"' 'sed 50q "[$]0"'; do
+ if { test "X$echo_test_string" = "X`eval $cmd`"; } 2>/dev/null
+ then
+ break
+ fi
+ prev="$cmd"
+ done
+
+ if test "$prev" != 'sed 50q "[$]0"'; then
+ echo_test_string=`eval $prev`
+ export echo_test_string
+ exec ${ORIGINAL_CONFIG_SHELL-${CONFIG_SHELL-/bin/sh}} "[$]0" ${1+"[$]@"}
+ else
+ # Oops. We lost completely, so just stick with echo.
+ ECHO=echo
+ fi
+ fi
+ fi
+ fi
+ fi
+fi
+
+# Copy echo and quote the copy suitably for passing to libtool from
+# the Makefile, instead of quoting the original, which is used later.
+lt_ECHO=$ECHO
+if test "X$lt_ECHO" = "X$CONFIG_SHELL [$]0 --fallback-echo"; then
+ lt_ECHO="$CONFIG_SHELL \\\$\[$]0 --fallback-echo"
+fi
+
+AC_SUBST(lt_ECHO)
+])
+_LT_DECL([], [SHELL], [1], [Shell to use when invoking shell scripts])
+_LT_DECL([], [ECHO], [1],
+ [An echo program that does not interpret backslashes])
+])# _LT_PROG_ECHO_BACKSLASH
+
+
+# _LT_ENABLE_LOCK
+# ---------------
+m4_defun([_LT_ENABLE_LOCK],
+[AC_ARG_ENABLE([libtool-lock],
+ [AS_HELP_STRING([--disable-libtool-lock],
+ [avoid locking (might break parallel builds)])])
+test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
+
+# Some flags need to be propagated to the compiler or linker for good
+# libtool support.
+case $host in
+ia64-*-hpux*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ case `/usr/bin/file conftest.$ac_objext` in
+ *ELF-32*)
+ HPUX_IA64_MODE="32"
+ ;;
+ *ELF-64*)
+ HPUX_IA64_MODE="64"
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+*-*-irix6*)
+ # Find out which ABI we are using.
+ echo '[#]line __oline__ "configure"' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ if test "$lt_cv_prog_gnu_ld" = yes; then
+ case `/usr/bin/file conftest.$ac_objext` in
+ *32-bit*)
+ LD="${LD-ld} -melf32bsmip"
+ ;;
+ *N32*)
+ LD="${LD-ld} -melf32bmipn32"
+ ;;
+ *64-bit*)
+ LD="${LD-ld} -melf64bmip"
+ ;;
+ esac
+ else
+ case `/usr/bin/file conftest.$ac_objext` in
+ *32-bit*)
+ LD="${LD-ld} -32"
+ ;;
+ *N32*)
+ LD="${LD-ld} -n32"
+ ;;
+ *64-bit*)
+ LD="${LD-ld} -64"
+ ;;
+ esac
+ fi
+ fi
+ rm -rf conftest*
+ ;;
+
+x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ case `/usr/bin/file conftest.o` in
+ *32-bit*)
+ case $host in
+ x86_64-*kfreebsd*-gnu)
+ LD="${LD-ld} -m elf_i386_fbsd"
+ ;;
+ x86_64-*linux*)
+ LD="${LD-ld} -m elf_i386"
+ ;;
+ ppc64-*linux*|powerpc64-*linux*)
+ LD="${LD-ld} -m elf32ppclinux"
+ ;;
+ s390x-*linux*)
+ LD="${LD-ld} -m elf_s390"
+ ;;
+ sparc64-*linux*)
+ LD="${LD-ld} -m elf32_sparc"
+ ;;
+ esac
+ ;;
+ *64-bit*)
+ case $host in
+ x86_64-*kfreebsd*-gnu)
+ LD="${LD-ld} -m elf_x86_64_fbsd"
+ ;;
+ x86_64-*linux*)
+ LD="${LD-ld} -m elf_x86_64"
+ ;;
+ ppc*-*linux*|powerpc*-*linux*)
+ LD="${LD-ld} -m elf64ppc"
+ ;;
+ s390*-*linux*|s390*-*tpf*)
+ LD="${LD-ld} -m elf64_s390"
+ ;;
+ sparc*-*linux*)
+ LD="${LD-ld} -m elf64_sparc"
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+
+*-*-sco3.2v5*)
+ # On SCO OpenServer 5, we need -belf to get full-featured binaries.
+ SAVE_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -belf"
+ AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf,
+ [AC_LANG_PUSH(C)
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no])
+ AC_LANG_POP])
+ if test x"$lt_cv_cc_needs_belf" != x"yes"; then
+ # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
+ CFLAGS="$SAVE_CFLAGS"
+ fi
+ ;;
+sparc*-*solaris*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if AC_TRY_EVAL(ac_compile); then
+ case `/usr/bin/file conftest.o` in
+ *64-bit*)
+ case $lt_cv_prog_gnu_ld in
+ yes*) LD="${LD-ld} -m elf64_sparc" ;;
+ *)
+ if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
+ LD="${LD-ld} -64"
+ fi
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+esac
+
+need_locks="$enable_libtool_lock"
+])# _LT_ENABLE_LOCK
+
+
+# _LT_CMD_OLD_ARCHIVE
+# -------------------
+m4_defun([_LT_CMD_OLD_ARCHIVE],
+[AC_CHECK_TOOL(AR, ar, false)
+test -z "$AR" && AR=ar
+test -z "$AR_FLAGS" && AR_FLAGS=cru
+_LT_DECL([], [AR], [1], [The archiver])
+_LT_DECL([], [AR_FLAGS], [1])
+
+AC_CHECK_TOOL(STRIP, strip, :)
+test -z "$STRIP" && STRIP=:
+_LT_DECL([], [STRIP], [1], [A symbol stripping program])
+
+AC_CHECK_TOOL(RANLIB, ranlib, :)
+test -z "$RANLIB" && RANLIB=:
+_LT_DECL([], [RANLIB], [1],
+ [Commands used to install an old-style archive])
+
+# Determine commands to create old-style static archives.
+old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
+old_postinstall_cmds='chmod 644 $oldlib'
+old_postuninstall_cmds=
+
+if test -n "$RANLIB"; then
+ case $host_os in
+ openbsd*)
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
+ ;;
+ *)
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$oldlib"
+ ;;
+ esac
+ old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
+fi
+_LT_DECL([], [old_postinstall_cmds], [2])
+_LT_DECL([], [old_postuninstall_cmds], [2])
+_LT_TAGDECL([], [old_archive_cmds], [2],
+ [Commands used to build an old-style archive])
+])# _LT_CMD_OLD_ARCHIVE
+
+
+# _LT_COMPILER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+# [OUTPUT-FILE], [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------------------
+# Check whether the given compiler option works
+AC_DEFUN([_LT_COMPILER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+ [$2=no
+ m4_if([$4], , [ac_outfile=conftest.$ac_objext], [ac_outfile=$4])
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+ lt_compiler_flag="$3"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ # The option is referenced via a variable to avoid confusing sed.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:__oline__: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$lt_compile" 2>conftest.err)
+ ac_status=$?
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ echo "$as_me:__oline__: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+ if (exit $ac_status) && test -s "$ac_outfile"; then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings other than the usual output.
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' >conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+ $2=yes
+ fi
+ fi
+ $RM conftest*
+])
+
+if test x"[$]$2" = xyes; then
+ m4_if([$5], , :, [$5])
+else
+ m4_if([$6], , :, [$6])
+fi
+])# _LT_COMPILER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_COMPILER_OPTION], [_LT_COMPILER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_COMPILER_OPTION], [])
+
+
+# _LT_LINKER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+# [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------
+# Check whether the given linker option works
+AC_DEFUN([_LT_LINKER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+ [$2=no
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS $3"
+ echo "$lt_simple_link_test_code" > conftest.$ac_ext
+ if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+ # The linker can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ if test -s conftest.err; then
+ # Append any errors to the config.log.
+ cat conftest.err 1>&AS_MESSAGE_LOG_FD
+ $ECHO "X$_lt_linker_boilerplate" | $Xsed -e '/^$/d' > conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if diff conftest.exp conftest.er2 >/dev/null; then
+ $2=yes
+ fi
+ else
+ $2=yes
+ fi
+ fi
+ $RM -r conftest*
+ LDFLAGS="$save_LDFLAGS"
+])
+
+if test x"[$]$2" = xyes; then
+ m4_if([$4], , :, [$4])
+else
+ m4_if([$5], , :, [$5])
+fi
+])# _LT_LINKER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_LINKER_OPTION], [_LT_LINKER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_LINKER_OPTION], [])
+
+
+# LT_CMD_MAX_LEN
+#---------------
+AC_DEFUN([LT_CMD_MAX_LEN],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+# find the maximum length of command line arguments
+AC_MSG_CHECKING([the maximum length of command line arguments])
+AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
+ i=0
+ teststring="ABCD"
+
+ case $build_os in
+ msdosdjgpp*)
+ # On DJGPP, this test can blow up pretty badly due to problems in libc
+ # (any single argument exceeding 2000 bytes causes a buffer overrun
+ # during glob expansion). Even if it were fixed, the result of this
+ # check would be larger than it should be.
+ lt_cv_sys_max_cmd_len=12288; # 12K is about right
+ ;;
+
+ gnu*)
+ # Under GNU Hurd, this test is not required because there is
+ # no limit to the length of command line arguments.
+ # Libtool will interpret -1 as no limit whatsoever
+ lt_cv_sys_max_cmd_len=-1;
+ ;;
+
+ cygwin* | mingw* | cegcc*)
+ # On Win9x/ME, this test blows up -- it succeeds, but takes
+ # about 5 minutes as the teststring grows exponentially.
+ # Worse, since 9x/ME are not pre-emptively multitasking,
+ # you end up with a "frozen" computer, even though with patience
+ # the test eventually succeeds (with a max line length of 256k).
+ # Instead, let's just punt: use the minimum linelength reported by
+ # all of the supported platforms: 8192 (on NT/2K/XP).
+ lt_cv_sys_max_cmd_len=8192;
+ ;;
+
+ amigaos*)
+ # On AmigaOS with pdksh, this test takes hours, literally.
+ # So we just punt and use a minimum line length of 8192.
+ lt_cv_sys_max_cmd_len=8192;
+ ;;
+
+ netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+ # This has been around since 386BSD, at least. Likely further.
+ if test -x /sbin/sysctl; then
+ lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+ elif test -x /usr/sbin/sysctl; then
+ lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+ else
+ lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs
+ fi
+ # And add a safety zone
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+ ;;
+
+ interix*)
+ # We know the value 262144 and hardcode it with a safety zone (like BSD)
+ lt_cv_sys_max_cmd_len=196608
+ ;;
+
+ osf*)
+ # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
+ # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
+ # nice to cause kernel panics so lets avoid the loop below.
+ # First set a reasonable default.
+ lt_cv_sys_max_cmd_len=16384
+ #
+ if test -x /sbin/sysconfig; then
+ case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
+ *1*) lt_cv_sys_max_cmd_len=-1 ;;
+ esac
+ fi
+ ;;
+ sco3.2v5*)
+ lt_cv_sys_max_cmd_len=102400
+ ;;
+ sysv5* | sco5v6* | sysv4.2uw2*)
+ kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
+ if test -n "$kargmax"; then
+ lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[[ ]]//'`
+ else
+ lt_cv_sys_max_cmd_len=32768
+ fi
+ ;;
+ *)
+ lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
+ if test -n "$lt_cv_sys_max_cmd_len"; then
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+ else
+ # Make teststring a little bigger before we do anything with it.
+ # a 1K string should be a reasonable start.
+ for i in 1 2 3 4 5 6 7 8 ; do
+ teststring=$teststring$teststring
+ done
+ SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
+ # If test is not a shell built-in, we'll probably end up computing a
+ # maximum length that is only half of the actual maximum length, but
+ # we can't tell.
+ while { test "X"`$SHELL [$]0 --fallback-echo "X$teststring$teststring" 2>/dev/null` \
+ = "XX$teststring$teststring"; } >/dev/null 2>&1 &&
+ test $i != 17 # 1/2 MB should be enough
+ do
+ i=`expr $i + 1`
+ teststring=$teststring$teststring
+ done
+ # Only check the string length outside the loop.
+ lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
+ teststring=
+ # Add a significant safety factor because C++ compilers can tack on
+ # massive amounts of additional arguments before passing them to the
+ # linker. It appears as though 1/2 is a usable value.
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
+ fi
+ ;;
+ esac
+])
+if test -n $lt_cv_sys_max_cmd_len ; then
+ AC_MSG_RESULT($lt_cv_sys_max_cmd_len)
+else
+ AC_MSG_RESULT(none)
+fi
+max_cmd_len=$lt_cv_sys_max_cmd_len
+_LT_DECL([], [max_cmd_len], [0],
+ [What is the maximum length of a command?])
+])# LT_CMD_MAX_LEN
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_SYS_MAX_CMD_LEN], [LT_CMD_MAX_LEN])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_SYS_MAX_CMD_LEN], [])
+
+
+# _LT_HEADER_DLFCN
+# ----------------
+m4_defun([_LT_HEADER_DLFCN],
+[AC_CHECK_HEADERS([dlfcn.h], [], [], [AC_INCLUDES_DEFAULT])dnl
+])# _LT_HEADER_DLFCN
+
+
+# _LT_TRY_DLOPEN_SELF (ACTION-IF-TRUE, ACTION-IF-TRUE-W-USCORE,
+# ACTION-IF-FALSE, ACTION-IF-CROSS-COMPILING)
+# ----------------------------------------------------------------
+m4_defun([_LT_TRY_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "$cross_compiling" = yes; then :
+ [$4]
+else
+ lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+ lt_status=$lt_dlunknown
+ cat > conftest.$ac_ext <<_LT_EOF
+[#line __oline__ "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+# define LT_DLGLOBAL RTLD_GLOBAL
+#else
+# ifdef DL_GLOBAL
+# define LT_DLGLOBAL DL_GLOBAL
+# else
+# define LT_DLGLOBAL 0
+# endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+ find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+# ifdef RTLD_LAZY
+# define LT_DLLAZY_OR_NOW RTLD_LAZY
+# else
+# ifdef DL_LAZY
+# define LT_DLLAZY_OR_NOW DL_LAZY
+# else
+# ifdef RTLD_NOW
+# define LT_DLLAZY_OR_NOW RTLD_NOW
+# else
+# ifdef DL_NOW
+# define LT_DLLAZY_OR_NOW DL_NOW
+# else
+# define LT_DLLAZY_OR_NOW 0
+# endif
+# endif
+# endif
+# endif
+#endif
+
+void fnord() { int i=42;}
+int main ()
+{
+ void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+ int status = $lt_dlunknown;
+
+ if (self)
+ {
+ if (dlsym (self,"fnord")) status = $lt_dlno_uscore;
+ else if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore;
+ /* dlclose (self); */
+ }
+ else
+ puts (dlerror ());
+
+ return status;
+}]
+_LT_EOF
+ if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} 2>/dev/null; then
+ (./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null
+ lt_status=$?
+ case x$lt_status in
+ x$lt_dlno_uscore) $1 ;;
+ x$lt_dlneed_uscore) $2 ;;
+ x$lt_dlunknown|x*) $3 ;;
+ esac
+ else :
+ # compilation failed
+ $3
+ fi
+fi
+rm -fr conftest*
+])# _LT_TRY_DLOPEN_SELF
+
+
+# LT_SYS_DLOPEN_SELF
+# ------------------
+AC_DEFUN([LT_SYS_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "x$enable_dlopen" != xyes; then
+ enable_dlopen=unknown
+ enable_dlopen_self=unknown
+ enable_dlopen_self_static=unknown
+else
+ lt_cv_dlopen=no
+ lt_cv_dlopen_libs=
+
+ case $host_os in
+ beos*)
+ lt_cv_dlopen="load_add_on"
+ lt_cv_dlopen_libs=
+ lt_cv_dlopen_self=yes
+ ;;
+
+ mingw* | pw32* | cegcc*)
+ lt_cv_dlopen="LoadLibrary"
+ lt_cv_dlopen_libs=
+ ;;
+
+ cygwin*)
+ lt_cv_dlopen="dlopen"
+ lt_cv_dlopen_libs=
+ ;;
+
+ darwin*)
+ # if libdl is installed we need to link against it
+ AC_CHECK_LIB([dl], [dlopen],
+ [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],[
+ lt_cv_dlopen="dyld"
+ lt_cv_dlopen_libs=
+ lt_cv_dlopen_self=yes
+ ])
+ ;;
+
+ *)
+ AC_CHECK_FUNC([shl_load],
+ [lt_cv_dlopen="shl_load"],
+ [AC_CHECK_LIB([dld], [shl_load],
+ [lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"],
+ [AC_CHECK_FUNC([dlopen],
+ [lt_cv_dlopen="dlopen"],
+ [AC_CHECK_LIB([dl], [dlopen],
+ [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],
+ [AC_CHECK_LIB([svld], [dlopen],
+ [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"],
+ [AC_CHECK_LIB([dld], [dld_link],
+ [lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"])
+ ])
+ ])
+ ])
+ ])
+ ])
+ ;;
+ esac
+
+ if test "x$lt_cv_dlopen" != xno; then
+ enable_dlopen=yes
+ else
+ enable_dlopen=no
+ fi
+
+ case $lt_cv_dlopen in
+ dlopen)
+ save_CPPFLAGS="$CPPFLAGS"
+ test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+ save_LDFLAGS="$LDFLAGS"
+ wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+ save_LIBS="$LIBS"
+ LIBS="$lt_cv_dlopen_libs $LIBS"
+
+ AC_CACHE_CHECK([whether a program can dlopen itself],
+ lt_cv_dlopen_self, [dnl
+ _LT_TRY_DLOPEN_SELF(
+ lt_cv_dlopen_self=yes, lt_cv_dlopen_self=yes,
+ lt_cv_dlopen_self=no, lt_cv_dlopen_self=cross)
+ ])
+
+ if test "x$lt_cv_dlopen_self" = xyes; then
+ wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
+ AC_CACHE_CHECK([whether a statically linked program can dlopen itself],
+ lt_cv_dlopen_self_static, [dnl
+ _LT_TRY_DLOPEN_SELF(
+ lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=yes,
+ lt_cv_dlopen_self_static=no, lt_cv_dlopen_self_static=cross)
+ ])
+ fi
+
+ CPPFLAGS="$save_CPPFLAGS"
+ LDFLAGS="$save_LDFLAGS"
+ LIBS="$save_LIBS"
+ ;;
+ esac
+
+ case $lt_cv_dlopen_self in
+ yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+ *) enable_dlopen_self=unknown ;;
+ esac
+
+ case $lt_cv_dlopen_self_static in
+ yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+ *) enable_dlopen_self_static=unknown ;;
+ esac
+fi
+_LT_DECL([dlopen_support], [enable_dlopen], [0],
+ [Whether dlopen is supported])
+_LT_DECL([dlopen_self], [enable_dlopen_self], [0],
+ [Whether dlopen of programs is supported])
+_LT_DECL([dlopen_self_static], [enable_dlopen_self_static], [0],
+ [Whether dlopen of statically linked programs is supported])
+])# LT_SYS_DLOPEN_SELF
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_DLOPEN_SELF], [LT_SYS_DLOPEN_SELF])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN_SELF], [])
+
+
+# _LT_COMPILER_C_O([TAGNAME])
+# ---------------------------
+# Check to see if options -c and -o are simultaneously supported by compiler.
+# This macro does not hard code the compiler like AC_PROG_CC_C_O.
+m4_defun([_LT_COMPILER_C_O],
+[m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_CACHE_CHECK([if $compiler supports -c -o file.$ac_objext],
+ [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)],
+ [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=no
+ $RM -r conftest 2>/dev/null
+ mkdir conftest
+ cd conftest
+ mkdir out
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ lt_compiler_flag="-o out/conftest2.$ac_objext"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:__oline__: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$lt_compile" 2>out/conftest.err)
+ ac_status=$?
+ cat out/conftest.err >&AS_MESSAGE_LOG_FD
+ echo "$as_me:__oline__: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+ if (exit $ac_status) && test -s out/conftest2.$ac_objext
+ then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' > out/conftest.exp
+ $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+ if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+ _LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+ fi
+ fi
+ chmod u+w . 2>&AS_MESSAGE_LOG_FD
+ $RM conftest*
+ # SGI C++ compiler will create directory out/ii_files/ for
+ # template instantiation
+ test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+ $RM out/* && rmdir out
+ cd ..
+ $RM -r conftest
+ $RM conftest*
+])
+_LT_TAGDECL([compiler_c_o], [lt_cv_prog_compiler_c_o], [1],
+ [Does compiler simultaneously support -c and -o options?])
+])# _LT_COMPILER_C_O
+
+
+# _LT_COMPILER_FILE_LOCKS([TAGNAME])
+# ----------------------------------
+# Check to see if we can do hard links to lock some files if needed
+m4_defun([_LT_COMPILER_FILE_LOCKS],
+[m4_require([_LT_ENABLE_LOCK])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_COMPILER_C_O([$1])
+
+hard_links="nottested"
+if test "$_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)" = no && test "$need_locks" != no; then
+ # do not overwrite the value of need_locks provided by the user
+ AC_MSG_CHECKING([if we can lock with hard links])
+ hard_links=yes
+ $RM conftest*
+ ln conftest.a conftest.b 2>/dev/null && hard_links=no
+ touch conftest.a
+ ln conftest.a conftest.b 2>&5 || hard_links=no
+ ln conftest.a conftest.b 2>/dev/null && hard_links=no
+ AC_MSG_RESULT([$hard_links])
+ if test "$hard_links" = no; then
+ AC_MSG_WARN([`$CC' does not support `-c -o', so `make -j' may be unsafe])
+ need_locks=warn
+ fi
+else
+ need_locks=no
+fi
+_LT_DECL([], [need_locks], [1], [Must we lock files when doing compilation?])
+])# _LT_COMPILER_FILE_LOCKS
+
+
+# _LT_CHECK_OBJDIR
+# ----------------
+m4_defun([_LT_CHECK_OBJDIR],
+[AC_CACHE_CHECK([for objdir], [lt_cv_objdir],
+[rm -f .libs 2>/dev/null
+mkdir .libs 2>/dev/null
+if test -d .libs; then
+ lt_cv_objdir=.libs
+else
+ # MS-DOS does not allow filenames that begin with a dot.
+ lt_cv_objdir=_libs
+fi
+rmdir .libs 2>/dev/null])
+objdir=$lt_cv_objdir
+_LT_DECL([], [objdir], [0],
+ [The name of the directory that contains temporary libtool files])dnl
+m4_pattern_allow([LT_OBJDIR])dnl
+AC_DEFINE_UNQUOTED(LT_OBJDIR, "$lt_cv_objdir/",
+ [Define to the sub-directory in which libtool stores uninstalled libraries.])
+])# _LT_CHECK_OBJDIR
+
+
+# _LT_LINKER_HARDCODE_LIBPATH([TAGNAME])
+# --------------------------------------
+# Check hardcoding attributes.
+m4_defun([_LT_LINKER_HARDCODE_LIBPATH],
+[AC_MSG_CHECKING([how to hardcode library paths into programs])
+_LT_TAGVAR(hardcode_action, $1)=
+if test -n "$_LT_TAGVAR(hardcode_libdir_flag_spec, $1)" ||
+ test -n "$_LT_TAGVAR(runpath_var, $1)" ||
+ test "X$_LT_TAGVAR(hardcode_automatic, $1)" = "Xyes" ; then
+
+ # We can hardcode non-existent directories.
+ if test "$_LT_TAGVAR(hardcode_direct, $1)" != no &&
+ # If the only mechanism to avoid hardcoding is shlibpath_var, we
+ # have to relink, otherwise we might link with an installed library
+ # when we should be linking with a yet-to-be-installed one
+ ## test "$_LT_TAGVAR(hardcode_shlibpath_var, $1)" != no &&
+ test "$_LT_TAGVAR(hardcode_minus_L, $1)" != no; then
+ # Linking always hardcodes the temporary library directory.
+ _LT_TAGVAR(hardcode_action, $1)=relink
+ else
+ # We can link without hardcoding, and we can hardcode nonexisting dirs.
+ _LT_TAGVAR(hardcode_action, $1)=immediate
+ fi
+else
+ # We cannot hardcode anything, or else we can only hardcode existing
+ # directories.
+ _LT_TAGVAR(hardcode_action, $1)=unsupported
+fi
+AC_MSG_RESULT([$_LT_TAGVAR(hardcode_action, $1)])
+
+if test "$_LT_TAGVAR(hardcode_action, $1)" = relink ||
+ test "$_LT_TAGVAR(inherit_rpath, $1)" = yes; then
+ # Fast installation is not supported
+ enable_fast_install=no
+elif test "$shlibpath_overrides_runpath" = yes ||
+ test "$enable_shared" = no; then
+ # Fast installation is not necessary
+ enable_fast_install=needless
+fi
+_LT_TAGDECL([], [hardcode_action], [0],
+ [How to hardcode a shared library path into an executable])
+])# _LT_LINKER_HARDCODE_LIBPATH
+
+
+# _LT_CMD_STRIPLIB
+# ----------------
+m4_defun([_LT_CMD_STRIPLIB],
+[m4_require([_LT_DECL_EGREP])
+striplib=
+old_striplib=
+AC_MSG_CHECKING([whether stripping libraries is possible])
+if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+ test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
+ test -z "$striplib" && striplib="$STRIP --strip-unneeded"
+ AC_MSG_RESULT([yes])
+else
+# FIXME - insert some real tests, host_os isn't really good enough
+ case $host_os in
+ darwin*)
+ if test -n "$STRIP" ; then
+ striplib="$STRIP -x"
+ old_striplib="$STRIP -S"
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ fi
+ ;;
+ *)
+ AC_MSG_RESULT([no])
+ ;;
+ esac
+fi
+_LT_DECL([], [old_striplib], [1], [Commands to strip libraries])
+_LT_DECL([], [striplib], [1])
+])# _LT_CMD_STRIPLIB
+
+
+# _LT_SYS_DYNAMIC_LINKER([TAG])
+# -----------------------------
+# PORTME Fill in your ld.so characteristics
+m4_defun([_LT_SYS_DYNAMIC_LINKER],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_OBJDUMP])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_MSG_CHECKING([dynamic linker characteristics])
+m4_if([$1],
+ [], [
+if test "$GCC" = yes; then
+ case $host_os in
+ darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
+ *) lt_awk_arg="/^libraries:/" ;;
+ esac
+ lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e "s,=/,/,g"`
+ if $ECHO "$lt_search_path_spec" | $GREP ';' >/dev/null ; then
+ # if the path contains ";" then we assume it to be the separator
+ # otherwise default to the standard path separator (i.e. ":") - it is
+ # assumed that no part of a normal pathname contains ";" but that should
+ # okay in the real world where ";" in dirpaths is itself problematic.
+ lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ # Ok, now we have the path, separated by spaces, we can step through it
+ # and add multilib dir if necessary.
+ lt_tmp_lt_search_path_spec=
+ lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
+ for lt_sys_path in $lt_search_path_spec; do
+ if test -d "$lt_sys_path/$lt_multi_os_dir"; then
+ lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
+ else
+ test -d "$lt_sys_path" && \
+ lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
+ fi
+ done
+ lt_search_path_spec=`$ECHO $lt_tmp_lt_search_path_spec | awk '
+BEGIN {RS=" "; FS="/|\n";} {
+ lt_foo="";
+ lt_count=0;
+ for (lt_i = NF; lt_i > 0; lt_i--) {
+ if ($lt_i != "" && $lt_i != ".") {
+ if ($lt_i == "..") {
+ lt_count++;
+ } else {
+ if (lt_count == 0) {
+ lt_foo="/" $lt_i lt_foo;
+ } else {
+ lt_count--;
+ }
+ }
+ }
+ }
+ if (lt_foo != "") { lt_freq[[lt_foo]]++; }
+ if (lt_freq[[lt_foo]] == 1) { print lt_foo; }
+}'`
+ sys_lib_search_path_spec=`$ECHO $lt_search_path_spec`
+else
+ sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+fi])
+library_names_spec=
+libname_spec='lib$name'
+soname_spec=
+shrext_cmds=".so"
+postinstall_cmds=
+postuninstall_cmds=
+finish_cmds=
+finish_eval=
+shlibpath_var=
+shlibpath_overrides_runpath=unknown
+version_type=none
+dynamic_linker="$host_os ld.so"
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+need_lib_prefix=unknown
+hardcode_into_libs=no
+
+# when you set need_version to no, make sure it does not cause -set_version
+# flags to be left without arguments
+need_version=unknown
+
+case $host_os in
+aix3*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
+ shlibpath_var=LIBPATH
+
+ # AIX 3 has no versioning support, so we append a major version to the name.
+ soname_spec='${libname}${release}${shared_ext}$major'
+ ;;
+
+aix[[4-9]]*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ hardcode_into_libs=yes
+ if test "$host_cpu" = ia64; then
+ # AIX 5 supports IA64
+ library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ else
+ # With GCC up to 2.95.x, collect2 would create an import file
+ # for dependence libraries. The import file would start with
+ # the line `#! .'. This would cause the generated library to
+ # depend on `.', always an invalid library. This was fixed in
+ # development snapshots of GCC prior to 3.0.
+ case $host_os in
+ aix4 | aix4.[[01]] | aix4.[[01]].*)
+ if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
+ echo ' yes '
+ echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
+ :
+ else
+ can_build_shared=no
+ fi
+ ;;
+ esac
+ # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
+ # soname into executable. Probably we can add versioning support to
+ # collect2, so additional links can be useful in future.
+ if test "$aix_use_runtimelinking" = yes; then
+ # If using run time linking (on AIX 4.2 or later) use lib<name>.so
+ # instead of lib<name>.a to let people know that these are not
+ # typical AIX shared libraries.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ else
+ # We preserve .a as extension for shared libraries through AIX4.2
+ # and later when we are not doing run time linking.
+ library_names_spec='${libname}${release}.a $libname.a'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ fi
+ shlibpath_var=LIBPATH
+ fi
+ ;;
+
+amigaos*)
+ case $host_cpu in
+ powerpc)
+ # Since July 2007 AmigaOS4 officially supports .so libraries.
+ # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ ;;
+ m68k)
+ library_names_spec='$libname.ixlibrary $libname.a'
+ # Create ${libname}_ixlibrary.a entries in /sys/libs.
+ finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`$ECHO "X$lib" | $Xsed -e '\''s%^.*/\([[^/]]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
+ ;;
+ esac
+ ;;
+
+beos*)
+ library_names_spec='${libname}${shared_ext}'
+ dynamic_linker="$host_os ld.so"
+ shlibpath_var=LIBRARY_PATH
+ ;;
+
+bsdi[[45]]*)
+ version_type=linux
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+ sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+ # the default ld.so.conf also contains /usr/contrib/lib and
+ # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
+ # libtool to hard-code these into programs
+ ;;
+
+cygwin* | mingw* | pw32* | cegcc*)
+ version_type=windows
+ shrext_cmds=".dll"
+ need_version=no
+ need_lib_prefix=no
+
+ case $GCC,$host_os in
+ yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
+ library_names_spec='$libname.dll.a'
+ # DLL is installed to $(libdir)/../bin by postinstall_cmds
+ postinstall_cmds='base_file=`basename \${file}`~
+ dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+ dldir=$destdir/`dirname \$dlpath`~
+ test -d \$dldir || mkdir -p \$dldir~
+ $install_prog $dir/$dlname \$dldir/$dlname~
+ chmod a+x \$dldir/$dlname~
+ if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
+ eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
+ fi'
+ postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+ dlpath=$dir/\$dldll~
+ $RM \$dlpath'
+ shlibpath_overrides_runpath=yes
+
+ case $host_os in
+ cygwin*)
+ # Cygwin DLLs use 'cyg' prefix rather than 'lib'
+ soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+ sys_lib_search_path_spec="/usr/lib /lib/w32api /lib /usr/local/lib"
+ ;;
+ mingw* | cegcc*)
+ # MinGW DLLs use traditional 'lib' prefix
+ soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+ sys_lib_search_path_spec=`$CC -print-search-dirs | $GREP "^libraries:" | $SED -e "s/^libraries://" -e "s,=/,/,g"`
+ if $ECHO "$sys_lib_search_path_spec" | [$GREP ';[c-zC-Z]:/' >/dev/null]; then
+ # It is most probably a Windows format PATH printed by
+ # mingw gcc, but we are running on Cygwin. Gcc prints its search
+ # path with ; separators, and with drive letters. We can handle the
+ # drive letters (cygwin fileutils understands them), so leave them,
+ # especially as we might pass files found there to a mingw objdump,
+ # which wouldn't understand a cygwinified path. Ahh.
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ ;;
+ pw32*)
+ # pw32 DLLs use 'pw' prefix rather than 'lib'
+ library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+ ;;
+ esac
+ ;;
+
+ *)
+ library_names_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext} $libname.lib'
+ ;;
+ esac
+ dynamic_linker='Win32 ld.exe'
+ # FIXME: first we should search . and the directory the executable is in
+ shlibpath_var=PATH
+ ;;
+
+darwin* | rhapsody*)
+ dynamic_linker="$host_os dyld"
+ version_type=darwin
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
+ soname_spec='${libname}${release}${major}$shared_ext'
+ shlibpath_overrides_runpath=yes
+ shlibpath_var=DYLD_LIBRARY_PATH
+ shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
+m4_if([$1], [],[
+ sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"])
+ sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
+ ;;
+
+dgux*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ ;;
+
+freebsd1*)
+ dynamic_linker=no
+ ;;
+
+freebsd* | dragonfly*)
+ # DragonFly does not have aout. When/if they implement a new
+ # versioning mechanism, adjust this.
+ if test -x /usr/bin/objformat; then
+ objformat=`/usr/bin/objformat`
+ else
+ case $host_os in
+ freebsd[[123]]*) objformat=aout ;;
+ *) objformat=elf ;;
+ esac
+ fi
+ version_type=freebsd-$objformat
+ case $version_type in
+ freebsd-elf*)
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+ need_version=no
+ need_lib_prefix=no
+ ;;
+ freebsd-*)
+ library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
+ need_version=yes
+ ;;
+ esac
+ shlibpath_var=LD_LIBRARY_PATH
+ case $host_os in
+ freebsd2*)
+ shlibpath_overrides_runpath=yes
+ ;;
+ freebsd3.[[01]]* | freebsdelf3.[[01]]*)
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+ freebsd3.[[2-9]]* | freebsdelf3.[[2-9]]* | \
+ freebsd4.[[0-5]] | freebsdelf4.[[0-5]] | freebsd4.1.1 | freebsdelf4.1.1)
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+ *) # from 4.6 on, and DragonFly
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+ esac
+ ;;
+
+gnu*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ hardcode_into_libs=yes
+ ;;
+
+hpux9* | hpux10* | hpux11*)
+ # Give a soname corresponding to the major version so that dld.sl refuses to
+ # link against other versions.
+ version_type=sunos
+ need_lib_prefix=no
+ need_version=no
+ case $host_cpu in
+ ia64*)
+ shrext_cmds='.so'
+ hardcode_into_libs=yes
+ dynamic_linker="$host_os dld.so"
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ if test "X$HPUX_IA64_MODE" = X32; then
+ sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
+ else
+ sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
+ fi
+ sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+ ;;
+ hppa*64*)
+ shrext_cmds='.sl'
+ hardcode_into_libs=yes
+ dynamic_linker="$host_os dld.sl"
+ shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
+ shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
+ sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+ ;;
+ *)
+ shrext_cmds='.sl'
+ dynamic_linker="$host_os dld.sl"
+ shlibpath_var=SHLIB_PATH
+ shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ ;;
+ esac
+ # HP-UX runs *really* slowly unless shared libraries are mode 555.
+ postinstall_cmds='chmod 555 $lib'
+ ;;
+
+interix[[3-9]]*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+
+irix5* | irix6* | nonstopux*)
+ case $host_os in
+ nonstopux*) version_type=nonstopux ;;
+ *)
+ if test "$lt_cv_prog_gnu_ld" = yes; then
+ version_type=linux
+ else
+ version_type=irix
+ fi ;;
+ esac
+ need_lib_prefix=no
+ need_version=no
+ soname_spec='${libname}${release}${shared_ext}$major'
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
+ case $host_os in
+ irix5* | nonstopux*)
+ libsuff= shlibsuff=
+ ;;
+ *)
+ case $LD in # libtool.m4 will add one of these switches to LD
+ *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
+ libsuff= shlibsuff= libmagic=32-bit;;
+ *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
+ libsuff=32 shlibsuff=N32 libmagic=N32;;
+ *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
+ libsuff=64 shlibsuff=64 libmagic=64-bit;;
+ *) libsuff= shlibsuff= libmagic=never-match;;
+ esac
+ ;;
+ esac
+ shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
+ shlibpath_overrides_runpath=no
+ sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+ sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+ hardcode_into_libs=yes
+ ;;
+
+# No shared lib support for Linux oldld, aout, or coff.
+linux*oldld* | linux*aout* | linux*coff*)
+ dynamic_linker=no
+ ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ # Some binutils ld are patched to set DT_RUNPATH
+ save_LDFLAGS=$LDFLAGS
+ save_libdir=$libdir
+ eval "libdir=/foo; wl=\"$_LT_TAGVAR(lt_prog_compiler_wl, $1)\"; \
+ LDFLAGS=\"\$LDFLAGS $_LT_TAGVAR(hardcode_libdir_flag_spec, $1)\""
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+ [AS_IF([ ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null],
+ [shlibpath_overrides_runpath=yes])])
+ LDFLAGS=$save_LDFLAGS
+ libdir=$save_libdir
+
+ # This implies no fast_install, which is unacceptable.
+ # Some rework will be needed to allow for fast_install
+ # before this can be enabled.
+ hardcode_into_libs=yes
+
+ # Append ld.so.conf contents to the search path
+ if test -f /etc/ld.so.conf; then
+ lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;/^$/d' | tr '\n' ' '`
+ sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+ fi
+
+ # We used to test for /lib/ld.so.1 and disable shared libraries on
+ # powerpc, because MkLinux only supported shared libraries with the
+ # GNU dynamic linker. Since this was broken with cross compilers,
+ # most powerpc-linux boxes support dynamic linking these days and
+ # people can always --disable-shared, the test was removed, and we
+ # assume the GNU/Linux dynamic linker is in use.
+ dynamic_linker='GNU/Linux ld.so'
+ ;;
+
+netbsdelf*-gnu)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ dynamic_linker='NetBSD ld.elf_so'
+ ;;
+
+netbsd*)
+ version_type=sunos
+ need_lib_prefix=no
+ need_version=no
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+ dynamic_linker='NetBSD (a.out) ld.so'
+ else
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ dynamic_linker='NetBSD ld.elf_so'
+ fi
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+
+newsos6)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ ;;
+
+*nto* | *qnx*)
+ version_type=qnx
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ dynamic_linker='ldqnx.so'
+ ;;
+
+openbsd*)
+ version_type=sunos
+ sys_lib_dlsearch_path_spec="/usr/lib"
+ need_lib_prefix=no
+ # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
+ case $host_os in
+ openbsd3.3 | openbsd3.3.*) need_version=yes ;;
+ *) need_version=no ;;
+ esac
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ case $host_os in
+ openbsd2.[[89]] | openbsd2.[[89]].*)
+ shlibpath_overrides_runpath=no
+ ;;
+ *)
+ shlibpath_overrides_runpath=yes
+ ;;
+ esac
+ else
+ shlibpath_overrides_runpath=yes
+ fi
+ ;;
+
+os2*)
+ libname_spec='$name'
+ shrext_cmds=".dll"
+ need_lib_prefix=no
+ library_names_spec='$libname${shared_ext} $libname.a'
+ dynamic_linker='OS/2 ld.exe'
+ shlibpath_var=LIBPATH
+ ;;
+
+osf3* | osf4* | osf5*)
+ version_type=osf
+ need_lib_prefix=no
+ need_version=no
+ soname_spec='${libname}${release}${shared_ext}$major'
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+ sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+ ;;
+
+rdos*)
+ dynamic_linker=no
+ ;;
+
+solaris*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ # ldd complains unless libraries are executable
+ postinstall_cmds='chmod +x $lib'
+ ;;
+
+sunos4*)
+ version_type=sunos
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ if test "$with_gnu_ld" = yes; then
+ need_lib_prefix=no
+ fi
+ need_version=yes
+ ;;
+
+sysv4 | sysv4.3*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ case $host_vendor in
+ sni)
+ shlibpath_overrides_runpath=no
+ need_lib_prefix=no
+ runpath_var=LD_RUN_PATH
+ ;;
+ siemens)
+ need_lib_prefix=no
+ ;;
+ motorola)
+ need_lib_prefix=no
+ need_version=no
+ shlibpath_overrides_runpath=no
+ sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+ ;;
+ esac
+ ;;
+
+sysv4*MP*)
+ if test -d /usr/nec ;then
+ version_type=linux
+ library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
+ soname_spec='$libname${shared_ext}.$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ fi
+ ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+ version_type=freebsd-elf
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ if test "$with_gnu_ld" = yes; then
+ sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
+ else
+ sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
+ case $host_os in
+ sco3.2v5*)
+ sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
+ ;;
+ esac
+ fi
+ sys_lib_dlsearch_path_spec='/usr/lib'
+ ;;
+
+tpf*)
+ # TPF is a cross-target only. Preferred cross-host = GNU/Linux.
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+
+uts4*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ ;;
+
+*)
+ dynamic_linker=no
+ ;;
+esac
+AC_MSG_RESULT([$dynamic_linker])
+test "$dynamic_linker" = no && can_build_shared=no
+
+variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
+if test "$GCC" = yes; then
+ variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
+fi
+
+if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
+ sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
+fi
+if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
+ sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
+fi
+
+_LT_DECL([], [variables_saved_for_relink], [1],
+ [Variables whose values should be saved in libtool wrapper scripts and
+ restored at link time])
+_LT_DECL([], [need_lib_prefix], [0],
+ [Do we need the "lib" prefix for modules?])
+_LT_DECL([], [need_version], [0], [Do we need a version for libraries?])
+_LT_DECL([], [version_type], [0], [Library versioning type])
+_LT_DECL([], [runpath_var], [0], [Shared library runtime path variable])
+_LT_DECL([], [shlibpath_var], [0],[Shared library path variable])
+_LT_DECL([], [shlibpath_overrides_runpath], [0],
+ [Is shlibpath searched before the hard-coded library search path?])
+_LT_DECL([], [libname_spec], [1], [Format of library name prefix])
+_LT_DECL([], [library_names_spec], [1],
+ [[List of archive names. First name is the real one, the rest are links.
+ The last name is the one that the linker finds with -lNAME]])
+_LT_DECL([], [soname_spec], [1],
+ [[The coded name of the library, if different from the real name]])
+_LT_DECL([], [postinstall_cmds], [2],
+ [Command to use after installation of a shared archive])
+_LT_DECL([], [postuninstall_cmds], [2],
+ [Command to use after uninstallation of a shared archive])
+_LT_DECL([], [finish_cmds], [2],
+ [Commands used to finish a libtool library installation in a directory])
+_LT_DECL([], [finish_eval], [1],
+ [[As "finish_cmds", except a single script fragment to be evaled but
+ not shown]])
+_LT_DECL([], [hardcode_into_libs], [0],
+ [Whether we should hardcode library paths into libraries])
+_LT_DECL([], [sys_lib_search_path_spec], [2],
+ [Compile-time system search path for libraries])
+_LT_DECL([], [sys_lib_dlsearch_path_spec], [2],
+ [Run-time system search path for libraries])
+])# _LT_SYS_DYNAMIC_LINKER
+
+
+# _LT_PATH_TOOL_PREFIX(TOOL)
+# --------------------------
+# find a file program which can recognize shared library
+AC_DEFUN([_LT_PATH_TOOL_PREFIX],
+[m4_require([_LT_DECL_EGREP])dnl
+AC_MSG_CHECKING([for $1])
+AC_CACHE_VAL(lt_cv_path_MAGIC_CMD,
+[case $MAGIC_CMD in
+[[\\/*] | ?:[\\/]*])
+ lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+ ;;
+*)
+ lt_save_MAGIC_CMD="$MAGIC_CMD"
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+dnl $ac_dummy forces splitting on constant user-supplied paths.
+dnl POSIX.2 word splitting is done only on the output of word expansions,
+dnl not every word. This closes a longstanding sh security hole.
+ ac_dummy="m4_if([$2], , $PATH, [$2])"
+ for ac_dir in $ac_dummy; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/$1; then
+ lt_cv_path_MAGIC_CMD="$ac_dir/$1"
+ if test -n "$file_magic_test_file"; then
+ case $deplibs_check_method in
+ "file_magic "*)
+ file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+ MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+ if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+ $EGREP "$file_magic_regex" > /dev/null; then
+ :
+ else
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such. This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem. Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+ fi ;;
+ esac
+ fi
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+ MAGIC_CMD="$lt_save_MAGIC_CMD"
+ ;;
+esac])
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+ AC_MSG_RESULT($MAGIC_CMD)
+else
+ AC_MSG_RESULT(no)
+fi
+_LT_DECL([], [MAGIC_CMD], [0],
+ [Used to examine libraries when file_magic_cmd begins with "file"])dnl
+])# _LT_PATH_TOOL_PREFIX
+
+# Old name:
+AU_ALIAS([AC_PATH_TOOL_PREFIX], [_LT_PATH_TOOL_PREFIX])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_PATH_TOOL_PREFIX], [])
+
+
+# _LT_PATH_MAGIC
+# --------------
+# find a file program which can recognize a shared library
+m4_defun([_LT_PATH_MAGIC],
+[_LT_PATH_TOOL_PREFIX(${ac_tool_prefix}file, /usr/bin$PATH_SEPARATOR$PATH)
+if test -z "$lt_cv_path_MAGIC_CMD"; then
+ if test -n "$ac_tool_prefix"; then
+ _LT_PATH_TOOL_PREFIX(file, /usr/bin$PATH_SEPARATOR$PATH)
+ else
+ MAGIC_CMD=:
+ fi
+fi
+])# _LT_PATH_MAGIC
+
+
+# LT_PATH_LD
+# ----------
+# find the pathname to the GNU or non-GNU linker
+AC_DEFUN([LT_PATH_LD],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+
+AC_ARG_WITH([gnu-ld],
+ [AS_HELP_STRING([--with-gnu-ld],
+ [assume the C compiler uses GNU ld @<:@default=no@:>@])],
+ [test "$withval" = no || with_gnu_ld=yes],
+ [with_gnu_ld=no])dnl
+
+ac_prog=ld
+if test "$GCC" = yes; then
+ # Check if gcc -print-prog-name=ld gives a path.
+ AC_MSG_CHECKING([for ld used by $CC])
+ case $host in
+ *-*-mingw*)
+ # gcc leaves a trailing carriage return which upsets mingw
+ ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+ *)
+ ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+ esac
+ case $ac_prog in
+ # Accept absolute paths.
+ [[\\/]]* | ?:[[\\/]]*)
+ re_direlt='/[[^/]][[^/]]*/\.\./'
+ # Canonicalize the pathname of ld
+ ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
+ while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
+ ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
+ done
+ test -z "$LD" && LD="$ac_prog"
+ ;;
+ "")
+ # If it fails, then pretend we aren't using GCC.
+ ac_prog=ld
+ ;;
+ *)
+ # If it is relative, then search for the first ld in PATH.
+ with_gnu_ld=unknown
+ ;;
+ esac
+elif test "$with_gnu_ld" = yes; then
+ AC_MSG_CHECKING([for GNU ld])
+else
+ AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL(lt_cv_path_LD,
+[if test -z "$LD"; then
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for ac_dir in $PATH; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+ lt_cv_path_LD="$ac_dir/$ac_prog"
+ # Check to see if the program is GNU ld. I'd rather use --version,
+ # but apparently some variants of GNU ld only accept -v.
+ # Break only if it was the GNU/non-GNU ld that we prefer.
+ case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
+ *GNU* | *'with BFD'*)
+ test "$with_gnu_ld" != no && break
+ ;;
+ *)
+ test "$with_gnu_ld" != yes && break
+ ;;
+ esac
+ fi
+ done
+ IFS="$lt_save_ifs"
+else
+ lt_cv_path_LD="$LD" # Let the user override the test with a path.
+fi])
+LD="$lt_cv_path_LD"
+if test -n "$LD"; then
+ AC_MSG_RESULT($LD)
+else
+ AC_MSG_RESULT(no)
+fi
+test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
+_LT_PATH_LD_GNU
+AC_SUBST([LD])
+
+_LT_TAGDECL([], [LD], [1], [The linker used to build libraries])
+])# LT_PATH_LD
+
+# Old names:
+AU_ALIAS([AM_PROG_LD], [LT_PATH_LD])
+AU_ALIAS([AC_PROG_LD], [LT_PATH_LD])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_PROG_LD], [])
+dnl AC_DEFUN([AC_PROG_LD], [])
+
+
+# _LT_PATH_LD_GNU
+#- --------------
+m4_defun([_LT_PATH_LD_GNU],
+[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], lt_cv_prog_gnu_ld,
+[# I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+ lt_cv_prog_gnu_ld=yes
+ ;;
+*)
+ lt_cv_prog_gnu_ld=no
+ ;;
+esac])
+with_gnu_ld=$lt_cv_prog_gnu_ld
+])# _LT_PATH_LD_GNU
+
+
+# _LT_CMD_RELOAD
+# --------------
+# find reload flag for linker
+# -- PORTME Some linkers may need a different reload flag.
+m4_defun([_LT_CMD_RELOAD],
+[AC_CACHE_CHECK([for $LD option to reload object files],
+ lt_cv_ld_reload_flag,
+ [lt_cv_ld_reload_flag='-r'])
+reload_flag=$lt_cv_ld_reload_flag
+case $reload_flag in
+"" | " "*) ;;
+*) reload_flag=" $reload_flag" ;;
+esac
+reload_cmds='$LD$reload_flag -o $output$reload_objs'
+case $host_os in
+ darwin*)
+ if test "$GCC" = yes; then
+ reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
+ else
+ reload_cmds='$LD$reload_flag -o $output$reload_objs'
+ fi
+ ;;
+esac
+_LT_DECL([], [reload_flag], [1], [How to create reloadable object files])dnl
+_LT_DECL([], [reload_cmds], [2])dnl
+])# _LT_CMD_RELOAD
+
+
+# _LT_CHECK_MAGIC_METHOD
+# ----------------------
+# how to check for library dependencies
+# -- PORTME fill in with the dynamic library characteristics
+m4_defun([_LT_CHECK_MAGIC_METHOD],
+[m4_require([_LT_DECL_EGREP])
+m4_require([_LT_DECL_OBJDUMP])
+AC_CACHE_CHECK([how to recognize dependent libraries],
+lt_cv_deplibs_check_method,
+[lt_cv_file_magic_cmd='$MAGIC_CMD'
+lt_cv_file_magic_test_file=
+lt_cv_deplibs_check_method='unknown'
+# Need to set the preceding variable on all platforms that support
+# interlibrary dependencies.
+# 'none' -- dependencies not supported.
+# `unknown' -- same as none, but documents that we really don't know.
+# 'pass_all' -- all dependencies passed with no checks.
+# 'test_compile' -- check by making test program.
+# 'file_magic [[regex]]' -- check by looking for files in library path
+# which responds to the $file_magic_cmd with a given extended regex.
+# If you have `file' or equivalent on your system and you're not sure
+# whether `pass_all' will *always* work, you probably want this one.
+
+case $host_os in
+aix[[4-9]]*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+beos*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+bsdi[[45]]*)
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib)'
+ lt_cv_file_magic_cmd='/usr/bin/file -L'
+ lt_cv_file_magic_test_file=/shlib/libc.so
+ ;;
+
+cygwin*)
+ # func_win32_libid is a shell function defined in ltmain.sh
+ lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+ lt_cv_file_magic_cmd='func_win32_libid'
+ ;;
+
+mingw* | pw32*)
+ # Base MSYS/MinGW do not provide the 'file' command needed by
+ # func_win32_libid shell function, so use a weaker test based on 'objdump',
+ # unless we find 'file', for example because we are cross-compiling.
+ if ( file / ) >/dev/null 2>&1; then
+ lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+ lt_cv_file_magic_cmd='func_win32_libid'
+ else
+ lt_cv_deplibs_check_method='file_magic file format pei*-i386(.*architecture: i386)?'
+ lt_cv_file_magic_cmd='$OBJDUMP -f'
+ fi
+ ;;
+
+cegcc)
+ # use the weaker test based on 'objdump'. See mingw*.
+ lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
+ lt_cv_file_magic_cmd='$OBJDUMP -f'
+ ;;
+
+darwin* | rhapsody*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+freebsd* | dragonfly*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+ case $host_cpu in
+ i*86 )
+ # Not sure whether the presence of OpenBSD here was a mistake.
+ # Let's accept both of them until this is cleared up.
+ lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[[3-9]]86 (compact )?demand paged shared library'
+ lt_cv_file_magic_cmd=/usr/bin/file
+ lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
+ ;;
+ esac
+ else
+ lt_cv_deplibs_check_method=pass_all
+ fi
+ ;;
+
+gnu*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+hpux10.20* | hpux11*)
+ lt_cv_file_magic_cmd=/usr/bin/file
+ case $host_cpu in
+ ia64*)
+ lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|ELF-[[0-9]][[0-9]]) shared object file - IA64'
+ lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
+ ;;
+ hppa*64*)
+ [lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - PA-RISC [0-9].[0-9]']
+ lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
+ ;;
+ *)
+ lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|PA-RISC[[0-9]].[[0-9]]) shared library'
+ lt_cv_file_magic_test_file=/usr/lib/libc.sl
+ ;;
+ esac
+ ;;
+
+interix[[3-9]]*)
+ # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|\.a)$'
+ ;;
+
+irix5* | irix6* | nonstopux*)
+ case $LD in
+ *-32|*"-32 ") libmagic=32-bit;;
+ *-n32|*"-n32 ") libmagic=N32;;
+ *-64|*"-64 ") libmagic=64-bit;;
+ *) libmagic=never-match;;
+ esac
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+netbsd* | netbsdelf*-gnu)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+ else
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|_pic\.a)$'
+ fi
+ ;;
+
+newos6*)
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (executable|dynamic lib)'
+ lt_cv_file_magic_cmd=/usr/bin/file
+ lt_cv_file_magic_test_file=/usr/lib/libnls.so
+ ;;
+
+*nto* | *qnx*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+openbsd*)
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|\.so|_pic\.a)$'
+ else
+ lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+ fi
+ ;;
+
+osf3* | osf4* | osf5*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+rdos*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+solaris*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+sysv4 | sysv4.3*)
+ case $host_vendor in
+ motorola)
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib) M[[0-9]][[0-9]]* Version [[0-9]]'
+ lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
+ ;;
+ ncr)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ sequent)
+ lt_cv_file_magic_cmd='/bin/file'
+ lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB (shared object|dynamic lib )'
+ ;;
+ sni)
+ lt_cv_file_magic_cmd='/bin/file'
+ lt_cv_deplibs_check_method="file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB dynamic lib"
+ lt_cv_file_magic_test_file=/lib/libc.so
+ ;;
+ siemens)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ pc)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ esac
+ ;;
+
+tpf*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+esac
+])
+file_magic_cmd=$lt_cv_file_magic_cmd
+deplibs_check_method=$lt_cv_deplibs_check_method
+test -z "$deplibs_check_method" && deplibs_check_method=unknown
+
+_LT_DECL([], [deplibs_check_method], [1],
+ [Method to check whether dependent libraries are shared objects])
+_LT_DECL([], [file_magic_cmd], [1],
+ [Command to use when deplibs_check_method == "file_magic"])
+])# _LT_CHECK_MAGIC_METHOD
+
+
+# LT_PATH_NM
+# ----------
+# find the pathname to a BSD- or MS-compatible name lister
+AC_DEFUN([LT_PATH_NM],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_CACHE_CHECK([for BSD- or MS-compatible name lister (nm)], lt_cv_path_NM,
+[if test -n "$NM"; then
+ # Let the user override the test.
+ lt_cv_path_NM="$NM"
+else
+ lt_nm_to_check="${ac_tool_prefix}nm"
+ if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
+ lt_nm_to_check="$lt_nm_to_check nm"
+ fi
+ for lt_tmp_nm in $lt_nm_to_check; do
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ tmp_nm="$ac_dir/$lt_tmp_nm"
+ if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
+ # Check to see if the nm accepts a BSD-compat flag.
+ # Adding the `sed 1q' prevents false positives on HP-UX, which says:
+ # nm: unknown option "B" ignored
+ # Tru64's nm complains that /dev/null is an invalid object file
+ case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
+ */dev/null* | *'Invalid file or object type'*)
+ lt_cv_path_NM="$tmp_nm -B"
+ break
+ ;;
+ *)
+ case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+ */dev/null*)
+ lt_cv_path_NM="$tmp_nm -p"
+ break
+ ;;
+ *)
+ lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
+ continue # so that we can try to find one that supports BSD flags
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ done
+ IFS="$lt_save_ifs"
+ done
+ : ${lt_cv_path_NM=no}
+fi])
+if test "$lt_cv_path_NM" != "no"; then
+ NM="$lt_cv_path_NM"
+else
+ # Didn't find any BSD compatible name lister, look for dumpbin.
+ AC_CHECK_TOOLS(DUMPBIN, ["dumpbin -symbols" "link -dump -symbols"], :)
+ AC_SUBST([DUMPBIN])
+ if test "$DUMPBIN" != ":"; then
+ NM="$DUMPBIN"
+ fi
+fi
+test -z "$NM" && NM=nm
+AC_SUBST([NM])
+_LT_DECL([], [NM], [1], [A BSD- or MS-compatible name lister])dnl
+
+AC_CACHE_CHECK([the name lister ($NM) interface], [lt_cv_nm_interface],
+ [lt_cv_nm_interface="BSD nm"
+ echo "int some_variable = 0;" > conftest.$ac_ext
+ (eval echo "\"\$as_me:__oline__: $ac_compile\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$ac_compile" 2>conftest.err)
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ (eval echo "\"\$as_me:__oline__: $NM \\\"conftest.$ac_objext\\\"\"" >&AS_MESSAGE_LOG_FD)
+ (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
+ cat conftest.err >&AS_MESSAGE_LOG_FD
+ (eval echo "\"\$as_me:__oline__: output\"" >&AS_MESSAGE_LOG_FD)
+ cat conftest.out >&AS_MESSAGE_LOG_FD
+ if $GREP 'External.*some_variable' conftest.out > /dev/null; then
+ lt_cv_nm_interface="MS dumpbin"
+ fi
+ rm -f conftest*])
+])# LT_PATH_NM
+
+# Old names:
+AU_ALIAS([AM_PROG_NM], [LT_PATH_NM])
+AU_ALIAS([AC_PROG_NM], [LT_PATH_NM])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_PROG_NM], [])
+dnl AC_DEFUN([AC_PROG_NM], [])
+
+
+# LT_LIB_M
+# --------
+# check for math library
+AC_DEFUN([LT_LIB_M],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+LIBM=
+case $host in
+*-*-beos* | *-*-cygwin* | *-*-pw32* | *-*-darwin*)
+ # These system don't have libm, or don't need it
+ ;;
+*-ncr-sysv4.3*)
+ AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw")
+ AC_CHECK_LIB(m, cos, LIBM="$LIBM -lm")
+ ;;
+*)
+ AC_CHECK_LIB(m, cos, LIBM="-lm")
+ ;;
+esac
+AC_SUBST([LIBM])
+])# LT_LIB_M
+
+# Old name:
+AU_ALIAS([AC_CHECK_LIBM], [LT_LIB_M])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_CHECK_LIBM], [])
+
+
+# _LT_COMPILER_NO_RTTI([TAGNAME])
+# -------------------------------
+m4_defun([_LT_COMPILER_NO_RTTI],
+[m4_require([_LT_TAG_COMPILER])dnl
+
+_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+
+if test "$GCC" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin'
+
+ _LT_COMPILER_OPTION([if $compiler supports -fno-rtti -fno-exceptions],
+ lt_cv_prog_compiler_rtti_exceptions,
+ [-fno-rtti -fno-exceptions], [],
+ [_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)="$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1) -fno-rtti -fno-exceptions"])
+fi
+_LT_TAGDECL([no_builtin_flag], [lt_prog_compiler_no_builtin_flag], [1],
+ [Compiler flag to turn off builtin functions])
+])# _LT_COMPILER_NO_RTTI
+
+
+# _LT_CMD_GLOBAL_SYMBOLS
+# ----------------------
+m4_defun([_LT_CMD_GLOBAL_SYMBOLS],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+AC_REQUIRE([LT_PATH_LD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+
+# Check for command to grab the raw symbol name followed by C symbol from nm.
+AC_MSG_CHECKING([command to parse $NM output from $compiler object])
+AC_CACHE_VAL([lt_cv_sys_global_symbol_pipe],
+[
+# These are sane defaults that work on at least a few old systems.
+# [They come from Ultrix. What could be older than Ultrix?!! ;)]
+
+# Character class describing NM global symbol codes.
+symcode='[[BCDEGRST]]'
+
+# Regexp to match symbols that can be accessed directly from C.
+sympat='\([[_A-Za-z]][[_A-Za-z0-9]]*\)'
+
+# Define system-specific variables.
+case $host_os in
+aix*)
+ symcode='[[BCDT]]'
+ ;;
+cygwin* | mingw* | pw32* | cegcc*)
+ symcode='[[ABCDGISTW]]'
+ ;;
+hpux*)
+ if test "$host_cpu" = ia64; then
+ symcode='[[ABCDEGRST]]'
+ fi
+ ;;
+irix* | nonstopux*)
+ symcode='[[BCDEGRST]]'
+ ;;
+osf*)
+ symcode='[[BCDEGQRST]]'
+ ;;
+solaris*)
+ symcode='[[BDRT]]'
+ ;;
+sco3.2v5*)
+ symcode='[[DT]]'
+ ;;
+sysv4.2uw2*)
+ symcode='[[DT]]'
+ ;;
+sysv5* | sco5v6* | unixware* | OpenUNIX*)
+ symcode='[[ABDT]]'
+ ;;
+sysv4)
+ symcode='[[DFNSTU]]'
+ ;;
+esac
+
+# If we're using GNU nm, then use its standard symbol codes.
+case `$NM -V 2>&1` in
+*GNU* | *'with BFD'*)
+ symcode='[[ABCDGIRSTW]]' ;;
+esac
+
+# Transform an extracted symbol line into a proper C declaration.
+# Some systems (esp. on ia64) link data and code symbols differently,
+# so use this general approach.
+lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
+
+# Transform an extracted symbol line into symbol name and symbol address
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([[^ ]]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([[^ ]]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \(lib[[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"lib\2\", (void *) \&\2},/p'"
+
+# Handle CRLF in mingw tool chain
+opt_cr=
+case $build_os in
+mingw*)
+ opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
+ ;;
+esac
+
+# Try without a prefix underscore, then with it.
+for ac_symprfx in "" "_"; do
+
+ # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
+ symxfrm="\\1 $ac_symprfx\\2 \\2"
+
+ # Write the raw and C identifiers.
+ if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+ # Fake it for dumpbin and say T for any non-static function
+ # and D for any global variable.
+ # Also find C++ and __fastcall symbols from MSVC++,
+ # which start with @ or ?.
+ lt_cv_sys_global_symbol_pipe="$AWK ['"\
+" {last_section=section; section=\$ 3};"\
+" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
+" \$ 0!~/External *\|/{next};"\
+" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
+" {if(hide[section]) next};"\
+" {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
+" {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
+" s[1]~/^[@?]/{print s[1], s[1]; next};"\
+" s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
+" ' prfx=^$ac_symprfx]"
+ else
+ lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[[ ]]\($symcode$symcode*\)[[ ]][[ ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+ fi
+
+ # Check to see that the pipe works correctly.
+ pipe_works=no
+
+ rm -f conftest*
+ cat > conftest.$ac_ext <<_LT_EOF
+#ifdef __cplusplus
+extern "C" {
+#endif
+char nm_test_var;
+void nm_test_func(void);
+void nm_test_func(void){}
+#ifdef __cplusplus
+}
+#endif
+int main(){nm_test_var='a';nm_test_func();return(0);}
+_LT_EOF
+
+ if AC_TRY_EVAL(ac_compile); then
+ # Now try to grab the symbols.
+ nlist=conftest.nm
+ if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $nlist) && test -s "$nlist"; then
+ # Try sorting and uniquifying the output.
+ if sort "$nlist" | uniq > "$nlist"T; then
+ mv -f "$nlist"T "$nlist"
+ else
+ rm -f "$nlist"T
+ fi
+
+ # Make sure that we snagged all the symbols we need.
+ if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
+ if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
+ cat <<_LT_EOF > conftest.$ac_ext
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_LT_EOF
+ # Now generate the symbol file.
+ eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
+
+ cat <<_LT_EOF >> conftest.$ac_ext
+
+/* The mapping between symbol names and symbols. */
+const struct {
+ const char *name;
+ void *address;
+}
+lt__PROGRAM__LTX_preloaded_symbols[[]] =
+{
+ { "@PROGRAM@", (void *) 0 },
+_LT_EOF
+ $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/ {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
+ cat <<\_LT_EOF >> conftest.$ac_ext
+ {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+ return lt__PROGRAM__LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+_LT_EOF
+ # Now try linking the two files.
+ mv conftest.$ac_objext conftstm.$ac_objext
+ lt_save_LIBS="$LIBS"
+ lt_save_CFLAGS="$CFLAGS"
+ LIBS="conftstm.$ac_objext"
+ CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)"
+ if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
+ pipe_works=yes
+ fi
+ LIBS="$lt_save_LIBS"
+ CFLAGS="$lt_save_CFLAGS"
+ else
+ echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD
+ fi
+ else
+ echo "cannot find nm_test_var in $nlist" >&AS_MESSAGE_LOG_FD
+ fi
+ else
+ echo "cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
+ fi
+ else
+ echo "$progname: failed program was:" >&AS_MESSAGE_LOG_FD
+ cat conftest.$ac_ext >&5
+ fi
+ rm -rf conftest* conftst*
+
+ # Do not use the global_symbol_pipe unless it works.
+ if test "$pipe_works" = yes; then
+ break
+ else
+ lt_cv_sys_global_symbol_pipe=
+ fi
+done
+])
+if test -z "$lt_cv_sys_global_symbol_pipe"; then
+ lt_cv_sys_global_symbol_to_cdecl=
+fi
+if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
+ AC_MSG_RESULT(failed)
+else
+ AC_MSG_RESULT(ok)
+fi
+
+_LT_DECL([global_symbol_pipe], [lt_cv_sys_global_symbol_pipe], [1],
+ [Take the output of nm and produce a listing of raw symbols and C names])
+_LT_DECL([global_symbol_to_cdecl], [lt_cv_sys_global_symbol_to_cdecl], [1],
+ [Transform the output of nm in a proper C declaration])
+_LT_DECL([global_symbol_to_c_name_address],
+ [lt_cv_sys_global_symbol_to_c_name_address], [1],
+ [Transform the output of nm in a C name address pair])
+_LT_DECL([global_symbol_to_c_name_address_lib_prefix],
+ [lt_cv_sys_global_symbol_to_c_name_address_lib_prefix], [1],
+ [Transform the output of nm in a C name address pair when lib prefix is needed])
+]) # _LT_CMD_GLOBAL_SYMBOLS
+
+
+# _LT_COMPILER_PIC([TAGNAME])
+# ---------------------------
+m4_defun([_LT_COMPILER_PIC],
+[m4_require([_LT_TAG_COMPILER])dnl
+_LT_TAGVAR(lt_prog_compiler_wl, $1)=
+_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+_LT_TAGVAR(lt_prog_compiler_static, $1)=
+
+AC_MSG_CHECKING([for $compiler option to produce PIC])
+m4_if([$1], [CXX], [
+ # C++ specific cases for pic, static, wl, etc.
+ if test "$GXX" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+ case $host_os in
+ aix*)
+ # All AIX code is PIC.
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ m68k)
+ # FIXME: we need at least 68020 code to build shared libraries, but
+ # adding the `-m68020' flag to GCC prevents building anything better,
+ # like `-m68040'.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+ ;;
+ esac
+ ;;
+
+ beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+ # PIC is the default for these OSes.
+ ;;
+ mingw* | cygwin* | os2* | pw32* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ # Although the cygwin gcc ignores -fPIC, still need this for old-style
+ # (--disable-auto-import) libraries
+ m4_if([$1], [GCJ], [],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+ ;;
+ darwin* | rhapsody*)
+ # PIC is the default on this platform
+ # Common symbols not allowed in MH_DYLIB files
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+ ;;
+ *djgpp*)
+ # DJGPP does not support shared libraries at all
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ ;;
+ interix[[3-9]]*)
+ # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+ # Instead, we relocate shared libraries at runtime.
+ ;;
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+ fi
+ ;;
+ hpux*)
+ # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+ # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag
+ # sets the default TLS model and affects inlining.
+ case $host_cpu in
+ hppa*64*)
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ ;;
+ *qnx* | *nto*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ else
+ case $host_os in
+ aix[[4-9]]*)
+ # All AIX code is PIC.
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ else
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+ fi
+ ;;
+ chorus*)
+ case $cc_basename in
+ cxch68*)
+ # Green Hills C++ Compiler
+ # _LT_TAGVAR(lt_prog_compiler_static, $1)="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a"
+ ;;
+ esac
+ ;;
+ dgux*)
+ case $cc_basename in
+ ec++*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ ;;
+ ghcx*)
+ # Green Hills C++ Compiler
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ freebsd* | dragonfly*)
+ # FreeBSD uses GNU C++
+ ;;
+ hpux9* | hpux10* | hpux11*)
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+ if test "$host_cpu" != ia64; then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+ fi
+ ;;
+ aCC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+ case $host_cpu in
+ hppa*64*|ia64*)
+ # +Z the default
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+ ;;
+ esac
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ interix*)
+ # This is c89, which is MS Visual C++ (no shared libs)
+ # Anyone wants to do a port?
+ ;;
+ irix5* | irix6* | nonstopux*)
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ # CC pic flag -KPIC is the default.
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ case $cc_basename in
+ KCC*)
+ # KAI C++ Compiler
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ ecpc* )
+ # old Intel C++ for x86_64 which still supported -KPIC.
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ icpc* )
+ # Intel C++, used to be incompatible with GCC.
+ # ICC 10 doesn't accept -KPIC any more.
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ pgCC* | pgcpp*)
+ # Portland Group C++ compiler
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ cxx*)
+ # Compaq C++
+ # Make sure the PIC flag is empty. It appears that all Alpha
+ # Linux and Compaq Tru64 Unix objects are PIC.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+ xlc* | xlC*)
+ # IBM XL 8.0 on PPC
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+ ;;
+ *)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C++ 5.9
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+ lynxos*)
+ ;;
+ m88k*)
+ ;;
+ mvs*)
+ case $cc_basename in
+ cxx*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-W c,exportall'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ netbsd* | netbsdelf*-gnu)
+ ;;
+ *qnx* | *nto*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+ osf3* | osf4* | osf5*)
+ case $cc_basename in
+ KCC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+ ;;
+ RCC*)
+ # Rational C++ 2.4.1
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ ;;
+ cxx*)
+ # Digital/Compaq C++
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # Make sure the PIC flag is empty. It appears that all Alpha
+ # Linux and Compaq Tru64 Unix objects are PIC.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ psos*)
+ ;;
+ solaris*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.2, 5.x and Centerline C++
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+ ;;
+ gcx*)
+ # Green Hills C++ Compiler
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ sunos4*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.x
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ lcc*)
+ # Lucid
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ esac
+ ;;
+ tandem*)
+ case $cc_basename in
+ NCC*)
+ # NonStop-UX NCC 3.20
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ ;;
+ *)
+ ;;
+ esac
+ ;;
+ vxworks*)
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ ;;
+ esac
+ fi
+],
+[
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+ case $host_os in
+ aix*)
+ # All AIX code is PIC.
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ m68k)
+ # FIXME: we need at least 68020 code to build shared libraries, but
+ # adding the `-m68020' flag to GCC prevents building anything better,
+ # like `-m68040'.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+ ;;
+ esac
+ ;;
+
+ beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+ # PIC is the default for these OSes.
+ ;;
+
+ mingw* | cygwin* | pw32* | os2* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ # Although the cygwin gcc ignores -fPIC, still need this for old-style
+ # (--disable-auto-import) libraries
+ m4_if([$1], [GCJ], [],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+ ;;
+
+ darwin* | rhapsody*)
+ # PIC is the default on this platform
+ # Common symbols not allowed in MH_DYLIB files
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+ ;;
+
+ hpux*)
+ # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+ # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag
+ # sets the default TLS model and affects inlining.
+ case $host_cpu in
+ hppa*64*)
+ # +Z the default
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ ;;
+
+ interix[[3-9]]*)
+ # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+ # Instead, we relocate shared libraries at runtime.
+ ;;
+
+ msdosdjgpp*)
+ # Just because we use GCC doesn't mean we suddenly get shared libraries
+ # on systems that don't support them.
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ enable_shared=no
+ ;;
+
+ *nto* | *qnx*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+ fi
+ ;;
+
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ ;;
+ esac
+ else
+ # PORTME Check for flag to pass linker flags through the system compiler.
+ case $host_os in
+ aix*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ else
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+ fi
+ ;;
+
+ mingw* | cygwin* | pw32* | os2* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ m4_if([$1], [GCJ], [],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+ ;;
+
+ hpux9* | hpux10* | hpux11*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
+ # not for PA HP-UX.
+ case $host_cpu in
+ hppa*64*|ia64*)
+ # +Z the default
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+ ;;
+ esac
+ # Is there a better lt_prog_compiler_static that works with the bundled CC?
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+ ;;
+
+ irix5* | irix6* | nonstopux*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # PIC (with -KPIC) is the default.
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+
+ linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ case $cc_basename in
+ # old Intel for x86_64 which still supported -KPIC.
+ ecc*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ # icc used to be incompatible with GCC.
+ # ICC 10 doesn't accept -KPIC any more.
+ icc* | ifort*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
+ # Lahey Fortran 8.1.
+ lf95*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='--shared'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='--static'
+ ;;
+ pgcc* | pgf77* | pgf90* | pgf95*)
+ # Portland Group compilers (*not* the Pentium gcc compiler,
+ # which looks to be a dead project)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+ ccc*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # All Alpha code is PIC.
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+ xl*)
+ # IBM XL C 8.0/Fortran 10.1 on PPC
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+ ;;
+ *)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C 5.9
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ ;;
+ *Sun\ F*)
+ # Sun Fortran 8.3 passes all unrecognized flags to the linker
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)=''
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+
+ newsos6)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ *nto* | *qnx*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+ ;;
+
+ osf3* | osf4* | osf5*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ # All OSF/1 code is PIC.
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+
+ rdos*)
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+ ;;
+
+ solaris*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ case $cc_basename in
+ f77* | f90* | f95*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ';;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,';;
+ esac
+ ;;
+
+ sunos4*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ sysv4 | sysv4.2uw2* | sysv4.3*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec ;then
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-Kconform_pic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ fi
+ ;;
+
+ sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ unicos*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ ;;
+
+ uts4*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+ ;;
+
+ *)
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+ ;;
+ esac
+ fi
+])
+case $host_os in
+ # For platforms which do not support PIC, -DPIC is meaningless:
+ *djgpp*)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ ;;
+ *)
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)="$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])"
+ ;;
+esac
+AC_MSG_RESULT([$_LT_TAGVAR(lt_prog_compiler_pic, $1)])
+_LT_TAGDECL([wl], [lt_prog_compiler_wl], [1],
+ [How to pass a linker flag through the compiler])
+
+#
+# Check to make sure the PIC flag actually works.
+#
+if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then
+ _LT_COMPILER_OPTION([if $compiler PIC flag $_LT_TAGVAR(lt_prog_compiler_pic, $1) works],
+ [_LT_TAGVAR(lt_cv_prog_compiler_pic_works, $1)],
+ [$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])], [],
+ [case $_LT_TAGVAR(lt_prog_compiler_pic, $1) in
+ "" | " "*) ;;
+ *) _LT_TAGVAR(lt_prog_compiler_pic, $1)=" $_LT_TAGVAR(lt_prog_compiler_pic, $1)" ;;
+ esac],
+ [_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+ _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no])
+fi
+_LT_TAGDECL([pic_flag], [lt_prog_compiler_pic], [1],
+ [Additional compiler flags for building library objects])
+
+#
+# Check to make sure the static flag actually works.
+#
+wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1) eval lt_tmp_static_flag=\"$_LT_TAGVAR(lt_prog_compiler_static, $1)\"
+_LT_LINKER_OPTION([if $compiler static flag $lt_tmp_static_flag works],
+ _LT_TAGVAR(lt_cv_prog_compiler_static_works, $1),
+ $lt_tmp_static_flag,
+ [],
+ [_LT_TAGVAR(lt_prog_compiler_static, $1)=])
+_LT_TAGDECL([link_static_flag], [lt_prog_compiler_static], [1],
+ [Compiler flag to prevent dynamic linking])
+])# _LT_COMPILER_PIC
+
+
+# _LT_LINKER_SHLIBS([TAGNAME])
+# ----------------------------
+# See if the linker supports building shared libraries.
+m4_defun([_LT_LINKER_SHLIBS],
+[AC_REQUIRE([LT_PATH_LD])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+m4_if([$1], [CXX], [
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ case $host_os in
+ aix[[4-9]]*)
+ # If we're using GNU nm, then we don't want the "-C" option.
+ # -C means demangle to AIX nm, but means don't demangle with GNU nm
+ if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ else
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ fi
+ ;;
+ pw32*)
+ _LT_TAGVAR(export_symbols_cmds, $1)="$ltdll_cmds"
+ ;;
+ cygwin* | mingw* | cegcc*)
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;/^.*[[ ]]__nm__/s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
+ ;;
+ linux* | k*bsd*-gnu)
+ _LT_TAGVAR(link_all_deplibs, $1)=no
+ ;;
+ *)
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ ;;
+ esac
+ _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+], [
+ runpath_var=
+ _LT_TAGVAR(allow_undefined_flag, $1)=
+ _LT_TAGVAR(always_export_symbols, $1)=no
+ _LT_TAGVAR(archive_cmds, $1)=
+ _LT_TAGVAR(archive_expsym_cmds, $1)=
+ _LT_TAGVAR(compiler_needs_object, $1)=no
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ _LT_TAGVAR(hardcode_automatic, $1)=no
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+ _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=
+ _LT_TAGVAR(hardcode_minus_L, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+ _LT_TAGVAR(inherit_rpath, $1)=no
+ _LT_TAGVAR(link_all_deplibs, $1)=unknown
+ _LT_TAGVAR(module_cmds, $1)=
+ _LT_TAGVAR(module_expsym_cmds, $1)=
+ _LT_TAGVAR(old_archive_from_new_cmds, $1)=
+ _LT_TAGVAR(old_archive_from_expsyms_cmds, $1)=
+ _LT_TAGVAR(thread_safe_flag_spec, $1)=
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ # include_expsyms should be a list of space-separated symbols to be *always*
+ # included in the symbol list
+ _LT_TAGVAR(include_expsyms, $1)=
+ # exclude_expsyms can be an extended regexp of symbols to exclude
+ # it will be wrapped by ` (' and `)$', so one must not match beginning or
+ # end of line. Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
+ # as well as any symbol that contains `d'.
+ _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+ # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+ # platforms (ab)use it in PIC code, but their linkers get confused if
+ # the symbol is explicitly referenced. Since portable code cannot
+ # rely on this symbol name, it's probably fine to never include it in
+ # preloaded symbol tables.
+ # Exclude shared library initialization/finalization symbols.
+dnl Note also adjust exclude_expsyms for C++ above.
+ extract_expsyms_cmds=
+
+ case $host_os in
+ cygwin* | mingw* | pw32* | cegcc*)
+ # FIXME: the MSVC++ port hasn't been tested in a loooong time
+ # When not using gcc, we currently assume that we are using
+ # Microsoft Visual C++.
+ if test "$GCC" != yes; then
+ with_gnu_ld=no
+ fi
+ ;;
+ interix*)
+ # we just hope/assume this is gcc and not c89 (= MSVC++)
+ with_gnu_ld=yes
+ ;;
+ openbsd*)
+ with_gnu_ld=no
+ ;;
+ linux* | k*bsd*-gnu)
+ _LT_TAGVAR(link_all_deplibs, $1)=no
+ ;;
+ esac
+
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ if test "$with_gnu_ld" = yes; then
+ # If archive_cmds runs LD, not CC, wlarc should be empty
+ wlarc='${wl}'
+
+ # Set some defaults for GNU ld with shared library support. These
+ # are reset later if shared libraries are not supported. Putting them
+ # here allows them to be overridden if necessary.
+ runpath_var=LD_RUN_PATH
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ # ancient GNU ld didn't support --whole-archive et. al.
+ if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
+ _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+ else
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ fi
+ supports_anon_versioning=no
+ case `$LD -v 2>&1` in
+ *GNU\ gold*) supports_anon_versioning=yes ;;
+ *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.10.*) ;; # catch versions < 2.11
+ *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
+ *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
+ *\ 2.11.*) ;; # other 2.11 versions
+ *) supports_anon_versioning=yes ;;
+ esac
+
+ # See if GNU ld supports shared libraries.
+ case $host_os in
+ aix[[3-9]]*)
+ # On AIX/PPC, the GNU linker is very broken
+ if test "$host_cpu" != ia64; then
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the GNU linker, at least up to release 2.9.1, is reported
+*** to be unable to reliably create shared libraries on AIX.
+*** Therefore, libtool is disabling shared libraries support. If you
+*** really care for shared libraries, you may want to modify your PATH
+*** so that a non-GNU linker is found, and then restart.
+
+_LT_EOF
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)=''
+ ;;
+ m68k)
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ ;;
+ esac
+ ;;
+
+ beos*)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+ # support --undefined. This deserves some investigation. FIXME
+ _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+ # as there is no search path for DLLs.
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=no
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/'\'' | $SED -e '\''/^[[AITW]][[ ]]/s/.*[[ ]]//'\'' | sort | uniq > $export_symbols'
+
+ if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ # If the export-symbols file already is a .def file (1st line
+ # is EXPORTS), use it as is; otherwise, prepend...
+ _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ cp $export_symbols $output_objdir/$soname.def;
+ else
+ echo EXPORTS > $output_objdir/$soname.def;
+ cat $export_symbols >> $output_objdir/$soname.def;
+ fi~
+ $CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ interix[[3-9]]*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+ # Instead, shared libraries are loaded at an image base (0x10000000 by
+ # default) and relocated if they conflict, which is a slow very memory
+ # consuming and fragmenting process. To avoid this, we pick a random,
+ # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+ # time. Moving up from 0x10000000 also allows more sbrk(2) space.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ ;;
+
+ gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+ tmp_diet=no
+ if test "$host_os" = linux-dietlibc; then
+ case $cc_basename in
+ diet\ *) tmp_diet=yes;; # linux-dietlibc with static linking (!diet-dyn)
+ esac
+ fi
+ if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
+ && test "$tmp_diet" = no
+ then
+ tmp_addflag=
+ tmp_sharedflag='-shared'
+ case $cc_basename,$host_cpu in
+ pgcc*) # Portland Group C compiler
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ tmp_addflag=' $pic_flag'
+ ;;
+ pgf77* | pgf90* | pgf95*) # Portland Group f77 and f90 compilers
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ tmp_addflag=' $pic_flag -Mnomain' ;;
+ ecc*,ia64* | icc*,ia64*) # Intel C compiler on ia64
+ tmp_addflag=' -i_dynamic' ;;
+ efc*,ia64* | ifort*,ia64*) # Intel Fortran compiler on ia64
+ tmp_addflag=' -i_dynamic -nofor_main' ;;
+ ifc* | ifort*) # Intel Fortran compiler
+ tmp_addflag=' -nofor_main' ;;
+ lf95*) # Lahey Fortran 8.1
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ tmp_sharedflag='--shared' ;;
+ xl[[cC]]*) # IBM XL C 8.0 on PPC (deal with xlf below)
+ tmp_sharedflag='-qmkshrobj'
+ tmp_addflag= ;;
+ esac
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*) # Sun C 5.9
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ _LT_TAGVAR(compiler_needs_object, $1)=yes
+ tmp_sharedflag='-G' ;;
+ *Sun\ F*) # Sun Fortran 8.3
+ tmp_sharedflag='-G' ;;
+ esac
+ _LT_TAGVAR(archive_cmds, $1)='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+
+ if test "x$supports_anon_versioning" = xyes; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+ fi
+
+ case $cc_basename in
+ xlf*)
+ # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='--whole-archive$convenience --no-whole-archive'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+ _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='-rpath $libdir'
+ _LT_TAGVAR(archive_cmds, $1)='$LD -shared $libobjs $deplibs $compiler_flags -soname $soname -o $lib'
+ if test "x$supports_anon_versioning" = xyes; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $LD -shared $libobjs $deplibs $compiler_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
+ fi
+ ;;
+ esac
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ netbsd* | netbsdelf*-gnu)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
+ wlarc=
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ fi
+ ;;
+
+ solaris*)
+ if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: The releases 2.8.* of the GNU linker cannot reliably
+*** create shared libraries on Solaris systems. Therefore, libtool
+*** is disabling shared libraries support. We urge you to upgrade GNU
+*** binutils to release 2.9.1 or newer. Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+ elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+ case `$LD -v 2>&1` in
+ *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.1[[0-5]].*)
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
+*** reliably create shared libraries on SCO systems. Therefore, libtool
+*** is disabling shared libraries support. We urge you to upgrade GNU
+*** binutils to release 2.16.91.0.3 or newer. Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+ ;;
+ *)
+ # For security reasons, it is highly recommended that you always
+ # use absolute paths for naming shared libraries, and exclude the
+ # DT_RUNPATH tag from executables and libraries. But doing so
+ # requires that you compile everything twice, which is a pain.
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ sunos4*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ wlarc=
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ *)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+
+ if test "$_LT_TAGVAR(ld_shlibs, $1)" = no; then
+ runpath_var=
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ fi
+ else
+ # PORTME fill in a description of your system's linker (not GNU ld)
+ case $host_os in
+ aix3*)
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=yes
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
+ # Note: this linker hardcodes the directories in LIBPATH if there
+ # are no directories specified by -L.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
+ # Neither direct hardcoding nor static linking is supported with a
+ # broken collect2.
+ _LT_TAGVAR(hardcode_direct, $1)=unsupported
+ fi
+ ;;
+
+ aix[[4-9]]*)
+ if test "$host_cpu" = ia64; then
+ # On IA64, the linker does run time linking by default, so we don't
+ # have to do anything special.
+ aix_use_runtimelinking=no
+ exp_sym_flag='-Bexport'
+ no_entry_flag=""
+ else
+ # If we're using GNU nm, then we don't want the "-C" option.
+ # -C means demangle to AIX nm, but means don't demangle with GNU nm
+ if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ else
+ _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ fi
+ aix_use_runtimelinking=no
+
+ # Test if we are trying to use run time linking or normal
+ # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+ # need to do runtime linking.
+ case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+ for ld_flag in $LDFLAGS; do
+ if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+ aix_use_runtimelinking=yes
+ break
+ fi
+ done
+ ;;
+ esac
+
+ exp_sym_flag='-bexport'
+ no_entry_flag='-bnoentry'
+ fi
+
+ # When large executables or shared objects are built, AIX ld can
+ # have problems creating the table of contents. If linking a library
+ # or program results in "error TOC overflow" add -mminimal-toc to
+ # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not
+ # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+ _LT_TAGVAR(archive_cmds, $1)=''
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+ if test "$GCC" = yes; then
+ case $host_os in aix4.[[012]]|aix4.[[012]].*)
+ # We only want to do this on AIX 4.2 and lower, the check
+ # below for broken collect2 doesn't work under 4.3+
+ collect2name=`${CC} -print-prog-name=collect2`
+ if test -f "$collect2name" &&
+ strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+ then
+ # We have reworked collect2
+ :
+ else
+ # We have old collect2
+ _LT_TAGVAR(hardcode_direct, $1)=unsupported
+ # It fails to find uninstalled libraries when the uninstalled
+ # path is not listed in the libpath. Setting hardcode_minus_L
+ # to unsupported forces relinking
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=
+ fi
+ ;;
+ esac
+ shared_flag='-shared'
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag="$shared_flag "'${wl}-G'
+ fi
+ _LT_TAGVAR(link_all_deplibs, $1)=no
+ else
+ # not using gcc
+ if test "$host_cpu" = ia64; then
+ # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+ # chokes on -Wl,-G. The following line is correct:
+ shared_flag='-G'
+ else
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag='${wl}-G'
+ else
+ shared_flag='${wl}-bM:SRE'
+ fi
+ fi
+ fi
+
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+ # It seems that -bexpall does not export symbols beginning with
+ # underscore (_), so it is better to generate a list of symbols to export.
+ _LT_TAGVAR(always_export_symbols, $1)=yes
+ if test "$aix_use_runtimelinking" = yes; then
+ # Warning - without using the other runtime loading flags (-brtl),
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then $ECHO "X${wl}${allow_undefined_flag}" | $Xsed; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+ else
+ if test "$host_cpu" = ia64; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+ _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+ else
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+ # Warning - without using the other run time loading flags,
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+ # Exported symbols can be pulled into shared objects from archives
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+ # This is similar to how AIX traditionally builds its shared libraries.
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+ fi
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)=''
+ ;;
+ m68k)
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ ;;
+ esac
+ ;;
+
+ bsdi[[45]]*)
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)=-rdynamic
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # When not using gcc, we currently assume that we are using
+ # Microsoft Visual C++.
+ # hardcode_libdir_flag_spec is actually meaningless, as there is
+ # no search path for DLLs.
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ # Tell ltmain to make .lib files, not .a files.
+ libext=lib
+ # Tell ltmain to make .dll files, not .so files.
+ shrext_cmds=".dll"
+ # FIXME: Setting linknames here is a bad hack.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -o $lib $libobjs $compiler_flags `$ECHO "X$deplibs" | $Xsed -e '\''s/ -lc$//'\''` -link -dll~linknames='
+ # The linker will automatically build a .lib file if we build a DLL.
+ _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
+ # FIXME: Should let the user specify the lib program.
+ _LT_TAGVAR(old_archive_cmds, $1)='lib -OUT:$oldlib$oldobjs$old_deplibs'
+ _LT_TAGVAR(fix_srcfile_path, $1)='`cygpath -w "$srcfile"`'
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+ ;;
+
+ darwin* | rhapsody*)
+ _LT_DARWIN_LINKER_FEATURES($1)
+ ;;
+
+ dgux*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ freebsd1*)
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
+ # support. Future versions do this automatically, but an explicit c++rt0.o
+ # does not break anything, and helps significantly (at the cost of a little
+ # extra space).
+ freebsd2.2*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ # Unfortunately, older versions of FreeBSD 2 do not have this feature.
+ freebsd2*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
+ freebsd* | dragonfly*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ hpux9*)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ ;;
+
+ hpux10*)
+ if test "$GCC" = yes -a "$with_gnu_ld" = no; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+ fi
+ if test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='+b $libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ fi
+ ;;
+
+ hpux11*)
+ if test "$GCC" = yes -a "$with_gnu_ld" = no; then
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ else
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ fi
+ if test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ case $host_cpu in
+ hppa*64*|ia64*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+ *)
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ ;;
+ esac
+ fi
+ ;;
+
+ irix5* | irix6* | nonstopux*)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ # Try to use the -exported_symbol ld option, if it does not
+ # work, assume that -exports_file does not work either and
+ # implicitly export all symbols.
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+ AC_LINK_IFELSE(int foo(void) {},
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+ )
+ LDFLAGS="$save_LDFLAGS"
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
+ fi
+ _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(inherit_rpath, $1)=yes
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ ;;
+
+ netbsd* | netbsdelf*-gnu)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' # a.out
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$LD -shared -o $lib $libobjs $deplibs $linker_flags' # ELF
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ newsos6)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ *nto* | *qnx*)
+ ;;
+
+ openbsd*)
+ if test -f /usr/libexec/ld.so; then
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ else
+ case $host_os in
+ openbsd[[01]].* | openbsd2.[[0-7]] | openbsd2.[[0-7]].*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ ;;
+ esac
+ fi
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ os2*)
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(archive_cmds, $1)='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~$ECHO DATA >> $output_objdir/$libname.def~$ECHO " SINGLE NONSHARED" >> $output_objdir/$libname.def~$ECHO EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
+ _LT_TAGVAR(old_archive_from_new_cmds, $1)='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
+ ;;
+
+ osf3*)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ else
+ _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ fi
+ _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ ;;
+
+ osf4* | osf5*) # as osf3* with the addition of -msym flag
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ else
+ _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
+ $CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
+
+ # Both c and cxx compiler support -rpath directly
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+ fi
+ _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ ;;
+
+ solaris*)
+ _LT_TAGVAR(no_undefined_flag, $1)=' -z defs'
+ if test "$GCC" = yes; then
+ wlarc='${wl}'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -shared ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ else
+ case `$CC -V 2>&1` in
+ *"Compilers 5.0"*)
+ wlarc=''
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
+ ;;
+ *)
+ wlarc='${wl}'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ ;;
+ esac
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ case $host_os in
+ solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+ *)
+ # The compiler driver will combine and reorder linker options,
+ # but understands `-z linker_flag'. GCC discards it without `$wl',
+ # but is careful enough not to reorder.
+ # Supported since Solaris 2.6 (maybe 2.5.1?)
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+ else
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+ fi
+ ;;
+ esac
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ ;;
+
+ sunos4*)
+ if test "x$host_vendor" = xsequent; then
+ # Use $CC to link under sequent, because it throws in some extra .o
+ # files that make .init and .fini sections work.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
+ fi
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ sysv4)
+ case $host_vendor in
+ sni)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=yes # is this really true???
+ ;;
+ siemens)
+ ## LD is ld it makes a PLAMLIB
+ ## CC just makes a GrossModule.
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(reload_cmds, $1)='$CC -r -o $output$reload_objs'
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ ;;
+ motorola)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_direct, $1)=no #Motorola manual says yes, but my tests say they lie
+ ;;
+ esac
+ runpath_var='LD_RUN_PATH'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ sysv4.3*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='-Bexport'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ runpath_var=LD_RUN_PATH
+ hardcode_runpath_var=yes
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ fi
+ ;;
+
+ sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ runpath_var='LD_RUN_PATH'
+
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ fi
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6*)
+ # Note: We can NOT use -z defs as we might desire, because we do not
+ # link with -lc, and that would cause any symbols used from libc to
+ # always be unresolved, which means just about no library would
+ # ever link correctly. If we're not using GNU ld we use -z text
+ # though, which does catch some bad symbols but isn't as heavy-handed
+ # as -z defs.
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+ runpath_var='LD_RUN_PATH'
+
+ if test "$GCC" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ fi
+ ;;
+
+ uts4*)
+ _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+
+ *)
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+
+ if test x$host_vendor = xsni; then
+ case $host in
+ sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Blargedynsym'
+ ;;
+ esac
+ fi
+ fi
+])
+AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+_LT_TAGVAR(with_gnu_ld, $1)=$with_gnu_ld
+
+_LT_DECL([], [libext], [0], [Old archive suffix (normally "a")])dnl
+_LT_DECL([], [shrext_cmds], [1], [Shared library suffix (normally ".so")])dnl
+_LT_DECL([], [extract_expsyms_cmds], [2],
+ [The commands to extract the exported symbol list from a shared archive])
+
+#
+# Do we need to explicitly link libc?
+#
+case "x$_LT_TAGVAR(archive_cmds_need_lc, $1)" in
+x|xyes)
+ # Assume -lc should be added
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+
+ if test "$enable_shared" = yes && test "$GCC" = yes; then
+ case $_LT_TAGVAR(archive_cmds, $1) in
+ *'~'*)
+ # FIXME: we may have to deal with multi-command sequences.
+ ;;
+ '$CC '*)
+ # Test whether the compiler implicitly links with -lc since on some
+ # systems, -lgcc has to come before -lc. If gcc already passes -lc
+ # to ld, don't add -lc before -lgcc.
+ AC_MSG_CHECKING([whether -lc should be explicitly linked in])
+ $RM conftest*
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ if AC_TRY_EVAL(ac_compile) 2>conftest.err; then
+ soname=conftest
+ lib=conftest
+ libobjs=conftest.$ac_objext
+ deplibs=
+ wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1)
+ pic_flag=$_LT_TAGVAR(lt_prog_compiler_pic, $1)
+ compiler_flags=-v
+ linker_flags=-v
+ verstring=
+ output_objdir=.
+ libname=conftest
+ lt_save_allow_undefined_flag=$_LT_TAGVAR(allow_undefined_flag, $1)
+ _LT_TAGVAR(allow_undefined_flag, $1)=
+ if AC_TRY_EVAL(_LT_TAGVAR(archive_cmds, $1) 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1)
+ then
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ else
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+ fi
+ _LT_TAGVAR(allow_undefined_flag, $1)=$lt_save_allow_undefined_flag
+ else
+ cat conftest.err 1>&5
+ fi
+ $RM conftest*
+ AC_MSG_RESULT([$_LT_TAGVAR(archive_cmds_need_lc, $1)])
+ ;;
+ esac
+ fi
+ ;;
+esac
+
+_LT_TAGDECL([build_libtool_need_lc], [archive_cmds_need_lc], [0],
+ [Whether or not to add -lc for building shared libraries])
+_LT_TAGDECL([allow_libtool_libs_with_static_runtimes],
+ [enable_shared_with_static_runtimes], [0],
+ [Whether or not to disallow shared libs when runtime libs are static])
+_LT_TAGDECL([], [export_dynamic_flag_spec], [1],
+ [Compiler flag to allow reflexive dlopens])
+_LT_TAGDECL([], [whole_archive_flag_spec], [1],
+ [Compiler flag to generate shared objects directly from archives])
+_LT_TAGDECL([], [compiler_needs_object], [1],
+ [Whether the compiler copes with passing no objects directly])
+_LT_TAGDECL([], [old_archive_from_new_cmds], [2],
+ [Create an old-style archive from a shared archive])
+_LT_TAGDECL([], [old_archive_from_expsyms_cmds], [2],
+ [Create a temporary old-style archive to link instead of a shared archive])
+_LT_TAGDECL([], [archive_cmds], [2], [Commands used to build a shared archive])
+_LT_TAGDECL([], [archive_expsym_cmds], [2])
+_LT_TAGDECL([], [module_cmds], [2],
+ [Commands used to build a loadable module if different from building
+ a shared archive.])
+_LT_TAGDECL([], [module_expsym_cmds], [2])
+_LT_TAGDECL([], [with_gnu_ld], [1],
+ [Whether we are building with GNU ld or not])
+_LT_TAGDECL([], [allow_undefined_flag], [1],
+ [Flag that allows shared libraries with undefined symbols to be built])
+_LT_TAGDECL([], [no_undefined_flag], [1],
+ [Flag that enforces no undefined symbols])
+_LT_TAGDECL([], [hardcode_libdir_flag_spec], [1],
+ [Flag to hardcode $libdir into a binary during linking.
+ This must work even if $libdir does not exist])
+_LT_TAGDECL([], [hardcode_libdir_flag_spec_ld], [1],
+ [[If ld is used when linking, flag to hardcode $libdir into a binary
+ during linking. This must work even if $libdir does not exist]])
+_LT_TAGDECL([], [hardcode_libdir_separator], [1],
+ [Whether we need a single "-rpath" flag with a separated argument])
+_LT_TAGDECL([], [hardcode_direct], [0],
+ [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+ DIR into the resulting binary])
+_LT_TAGDECL([], [hardcode_direct_absolute], [0],
+ [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+ DIR into the resulting binary and the resulting library dependency is
+ "absolute", i.e impossible to change by setting ${shlibpath_var} if the
+ library is relocated])
+_LT_TAGDECL([], [hardcode_minus_L], [0],
+ [Set to "yes" if using the -LDIR flag during linking hardcodes DIR
+ into the resulting binary])
+_LT_TAGDECL([], [hardcode_shlibpath_var], [0],
+ [Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
+ into the resulting binary])
+_LT_TAGDECL([], [hardcode_automatic], [0],
+ [Set to "yes" if building a shared library automatically hardcodes DIR
+ into the library and all subsequent libraries and executables linked
+ against it])
+_LT_TAGDECL([], [inherit_rpath], [0],
+ [Set to yes if linker adds runtime paths of dependent libraries
+ to runtime path list])
+_LT_TAGDECL([], [link_all_deplibs], [0],
+ [Whether libtool must link a program against all its dependency libraries])
+_LT_TAGDECL([], [fix_srcfile_path], [1],
+ [Fix the shell variable $srcfile for the compiler])
+_LT_TAGDECL([], [always_export_symbols], [0],
+ [Set to "yes" if exported symbols are required])
+_LT_TAGDECL([], [export_symbols_cmds], [2],
+ [The commands to list exported symbols])
+_LT_TAGDECL([], [exclude_expsyms], [1],
+ [Symbols that should not be listed in the preloaded symbols])
+_LT_TAGDECL([], [include_expsyms], [1],
+ [Symbols that must always be exported])
+_LT_TAGDECL([], [prelink_cmds], [2],
+ [Commands necessary for linking programs (against libraries) with templates])
+_LT_TAGDECL([], [file_list_spec], [1],
+ [Specify filename containing input files])
+dnl FIXME: Not yet implemented
+dnl _LT_TAGDECL([], [thread_safe_flag_spec], [1],
+dnl [Compiler flag to generate thread safe objects])
+])# _LT_LINKER_SHLIBS
+
+
+# _LT_LANG_C_CONFIG([TAG])
+# ------------------------
+# Ensure that the configuration variables for a C compiler are suitably
+# defined. These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_C_CONFIG],
+[m4_require([_LT_DECL_EGREP])dnl
+lt_save_CC="$CC"
+AC_LANG_PUSH(C)
+
+# Source file extension for C test sources.
+ac_ext=c
+
+# Object file extension for compiled C test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="int some_variable = 0;"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='int main(){return(0);}'
+
+_LT_TAG_COMPILER
+# Save the default compiler, since it gets overwritten when the other
+# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
+compiler_DEFAULT=$CC
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+if test -n "$compiler"; then
+ _LT_COMPILER_NO_RTTI($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+ LT_SYS_DLOPEN_SELF
+ _LT_CMD_STRIPLIB
+
+ # Report which library types will actually be built
+ AC_MSG_CHECKING([if libtool supports shared libraries])
+ AC_MSG_RESULT([$can_build_shared])
+
+ AC_MSG_CHECKING([whether to build shared libraries])
+ test "$can_build_shared" = "no" && enable_shared=no
+
+ # On AIX, shared libraries and static libraries use the same namespace, and
+ # are all built from PIC.
+ case $host_os in
+ aix3*)
+ test "$enable_shared" = yes && enable_static=no
+ if test -n "$RANLIB"; then
+ archive_cmds="$archive_cmds~\$RANLIB \$lib"
+ postinstall_cmds='$RANLIB $lib'
+ fi
+ ;;
+
+ aix[[4-9]]*)
+ if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+ test "$enable_shared" = yes && enable_static=no
+ fi
+ ;;
+ esac
+ AC_MSG_RESULT([$enable_shared])
+
+ AC_MSG_CHECKING([whether to build static libraries])
+ # Make sure either enable_shared or enable_static is yes.
+ test "$enable_shared" = yes || enable_static=yes
+ AC_MSG_RESULT([$enable_static])
+
+ _LT_CONFIG($1)
+fi
+AC_LANG_POP
+CC="$lt_save_CC"
+])# _LT_LANG_C_CONFIG
+
+
+# _LT_PROG_CXX
+# ------------
+# Since AC_PROG_CXX is broken, in that it returns g++ if there is no c++
+# compiler, we have our own version here.
+m4_defun([_LT_PROG_CXX],
+[
+pushdef([AC_MSG_ERROR], [_lt_caught_CXX_error=yes])
+AC_PROG_CXX
+if test -n "$CXX" && ( test "X$CXX" != "Xno" &&
+ ( (test "X$CXX" = "Xg++" && `g++ -v >/dev/null 2>&1` ) ||
+ (test "X$CXX" != "Xg++"))) ; then
+ AC_PROG_CXXCPP
+else
+ _lt_caught_CXX_error=yes
+fi
+popdef([AC_MSG_ERROR])
+])# _LT_PROG_CXX
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([_LT_PROG_CXX], [])
+
+
+# _LT_LANG_CXX_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a C++ compiler are suitably
+# defined. These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_CXX_CONFIG],
+[AC_REQUIRE([_LT_PROG_CXX])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+
+AC_LANG_PUSH(C++)
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(compiler_needs_object, $1)=no
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for C++ test sources.
+ac_ext=cpp
+
+# Object file extension for compiled C++ test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the CXX compiler isn't working. Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_caught_CXX_error" != yes; then
+ # Code to be used in simple compile tests
+ lt_simple_compile_test_code="int some_variable = 0;"
+
+ # Code to be used in simple link tests
+ lt_simple_link_test_code='int main(int, char *[[]]) { return(0); }'
+
+ # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+ _LT_TAG_COMPILER
+
+ # save warnings/boilerplate of simple test code
+ _LT_COMPILER_BOILERPLATE
+ _LT_LINKER_BOILERPLATE
+
+ # Allow CC to be a program name with arguments.
+ lt_save_CC=$CC
+ lt_save_LD=$LD
+ lt_save_GCC=$GCC
+ GCC=$GXX
+ lt_save_with_gnu_ld=$with_gnu_ld
+ lt_save_path_LD=$lt_cv_path_LD
+ if test -n "${lt_cv_prog_gnu_ldcxx+set}"; then
+ lt_cv_prog_gnu_ld=$lt_cv_prog_gnu_ldcxx
+ else
+ $as_unset lt_cv_prog_gnu_ld
+ fi
+ if test -n "${lt_cv_path_LDCXX+set}"; then
+ lt_cv_path_LD=$lt_cv_path_LDCXX
+ else
+ $as_unset lt_cv_path_LD
+ fi
+ test -z "${LDCXX+set}" || LD=$LDCXX
+ CC=${CXX-"c++"}
+ compiler=$CC
+ _LT_TAGVAR(compiler, $1)=$CC
+ _LT_CC_BASENAME([$compiler])
+
+ if test -n "$compiler"; then
+ # We don't want -fno-exception when compiling C++ code, so set the
+ # no_builtin_flag separately
+ if test "$GXX" = yes; then
+ _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin'
+ else
+ _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+ fi
+
+ if test "$GXX" = yes; then
+ # Set up default GNU C++ configuration
+
+ LT_PATH_LD
+
+ # Check if GNU C++ uses GNU ld as the underlying linker, since the
+ # archiving commands below assume that GNU ld is being used.
+ if test "$with_gnu_ld" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+ # If archive_cmds runs LD, not CC, wlarc should be empty
+ # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to
+ # investigate it a little bit more. (MM)
+ wlarc='${wl}'
+
+ # ancient GNU ld didn't support --whole-archive et. al.
+ if eval "`$CC -print-prog-name=ld` --help 2>&1" |
+ $GREP 'no-whole-archive' > /dev/null; then
+ _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+ else
+ _LT_TAGVAR(whole_archive_flag_spec, $1)=
+ fi
+ else
+ with_gnu_ld=no
+ wlarc=
+
+ # A generic and very simple default shared library creation
+ # command for GNU C++ for the case where it uses the native
+ # linker, instead of GNU ld. If possible, this setting should
+ # overridden to take advantage of the native linker features on
+ # the platform it is being used on.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+ fi
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+
+ else
+ GXX=no
+ with_gnu_ld=no
+ wlarc=
+ fi
+
+ # PORTME: fill in a description of your system's C++ link characteristics
+ AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ case $host_os in
+ aix3*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ aix[[4-9]]*)
+ if test "$host_cpu" = ia64; then
+ # On IA64, the linker does run time linking by default, so we don't
+ # have to do anything special.
+ aix_use_runtimelinking=no
+ exp_sym_flag='-Bexport'
+ no_entry_flag=""
+ else
+ aix_use_runtimelinking=no
+
+ # Test if we are trying to use run time linking or normal
+ # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+ # need to do runtime linking.
+ case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+ for ld_flag in $LDFLAGS; do
+ case $ld_flag in
+ *-brtl*)
+ aix_use_runtimelinking=yes
+ break
+ ;;
+ esac
+ done
+ ;;
+ esac
+
+ exp_sym_flag='-bexport'
+ no_entry_flag='-bnoentry'
+ fi
+
+ # When large executables or shared objects are built, AIX ld can
+ # have problems creating the table of contents. If linking a library
+ # or program results in "error TOC overflow" add -mminimal-toc to
+ # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not
+ # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+ _LT_TAGVAR(archive_cmds, $1)=''
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+ if test "$GXX" = yes; then
+ case $host_os in aix4.[[012]]|aix4.[[012]].*)
+ # We only want to do this on AIX 4.2 and lower, the check
+ # below for broken collect2 doesn't work under 4.3+
+ collect2name=`${CC} -print-prog-name=collect2`
+ if test -f "$collect2name" &&
+ strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+ then
+ # We have reworked collect2
+ :
+ else
+ # We have old collect2
+ _LT_TAGVAR(hardcode_direct, $1)=unsupported
+ # It fails to find uninstalled libraries when the uninstalled
+ # path is not listed in the libpath. Setting hardcode_minus_L
+ # to unsupported forces relinking
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=
+ fi
+ esac
+ shared_flag='-shared'
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag="$shared_flag "'${wl}-G'
+ fi
+ else
+ # not using gcc
+ if test "$host_cpu" = ia64; then
+ # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+ # chokes on -Wl,-G. The following line is correct:
+ shared_flag='-G'
+ else
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag='${wl}-G'
+ else
+ shared_flag='${wl}-bM:SRE'
+ fi
+ fi
+ fi
+
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+ # It seems that -bexpall does not export symbols beginning with
+ # underscore (_), so it is better to generate a list of symbols to
+ # export.
+ _LT_TAGVAR(always_export_symbols, $1)=yes
+ if test "$aix_use_runtimelinking" = yes; then
+ # Warning - without using the other runtime loading flags (-brtl),
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+ # Determine the default libpath from the value encoded in an empty
+ # executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then $ECHO "X${wl}${allow_undefined_flag}" | $Xsed; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+ else
+ if test "$host_cpu" = ia64; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+ _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+ else
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ _LT_SYS_MODULE_PATH_AIX
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+ # Warning - without using the other run time loading flags,
+ # -berok will link without error, but may produce a broken library.
+ _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+ # Exported symbols can be pulled into shared objects from archives
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+ # This is similar to how AIX traditionally builds its shared
+ # libraries.
+ _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+ fi
+ fi
+ ;;
+
+ beos*)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+ # support --undefined. This deserves some investigation. FIXME
+ _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ chorus*)
+ case $cc_basename in
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+ # as there is no search path for DLLs.
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+ _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+ _LT_TAGVAR(always_export_symbols, $1)=no
+ _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+
+ if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ # If the export-symbols file already is a .def file (1st line
+ # is EXPORTS), use it as is; otherwise, prepend...
+ _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ cp $export_symbols $output_objdir/$soname.def;
+ else
+ echo EXPORTS > $output_objdir/$soname.def;
+ cat $export_symbols >> $output_objdir/$soname.def;
+ fi~
+ $CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ darwin* | rhapsody*)
+ _LT_DARWIN_LINKER_FEATURES($1)
+ ;;
+
+ dgux*)
+ case $cc_basename in
+ ec++*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ ghcx*)
+ # Green Hills C++ Compiler
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ freebsd[[12]]*)
+ # C++ shared libraries reported to be fairly broken before
+ # switch to ELF
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ freebsd-elf*)
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ ;;
+
+ freebsd* | dragonfly*)
+ # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
+ # conventions
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ ;;
+
+ gnu*)
+ ;;
+
+ hpux9*)
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+ # but as the default
+ # location of the library.
+
+ case $cc_basename in
+ CC*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ aCC*)
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -b ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ *)
+ if test "$GXX" = yes; then
+ _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -nostdlib -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ else
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ hpux10*|hpux11*)
+ if test $with_gnu_ld = no; then
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ case $host_cpu in
+ hppa*64*|ia64*)
+ ;;
+ *)
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ ;;
+ esac
+ fi
+ case $host_cpu in
+ hppa*64*|ia64*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ ;;
+ *)
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+ # but as the default
+ # location of the library.
+ ;;
+ esac
+
+ case $cc_basename in
+ CC*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ aCC*)
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ esac
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ *)
+ if test "$GXX" = yes; then
+ if test $with_gnu_ld = no; then
+ case $host_cpu in
+ hppa*64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ ia64*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ ;;
+ esac
+ fi
+ else
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ interix[[3-9]]*)
+ _LT_TAGVAR(hardcode_direct, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+ # Instead, shared libraries are loaded at an image base (0x10000000 by
+ # default) and relocated if they conflict, which is a slow very memory
+ # consuming and fragmenting process. To avoid this, we pick a random,
+ # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+ # time. Moving up from 0x10000000 also allows more sbrk(2) space.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ ;;
+ irix5* | irix6*)
+ case $cc_basename in
+ CC*)
+ # SGI C++
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -all -multigot $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+
+ # Archives containing C++ object files must be created using
+ # "CC -ar", where "CC" is the IRIX C++ compiler. This is
+ # necessary to make sure instantiated templates are included
+ # in the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -ar -WR,-u -o $oldlib $oldobjs'
+ ;;
+ *)
+ if test "$GXX" = yes; then
+ if test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ else
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` -o $lib'
+ fi
+ fi
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ ;;
+ esac
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+ _LT_TAGVAR(inherit_rpath, $1)=yes
+ ;;
+
+ linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ case $cc_basename in
+ KCC*)
+ # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+ # KCC will only create a shared library if the output file
+ # ends with ".so" (or ".sl" for HP-UX), so rename the library
+ # to its proper name (with version) after linking.
+ _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib ${wl}-retain-symbols-file,$export_symbols; mv \$templib $lib'
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 | $GREP "ld"`; rm -f libconftest$shared_ext; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+ # Archives containing C++ object files must be created using
+ # "CC -Bstatic", where "CC" is the KAI C++ compiler.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs'
+ ;;
+ icpc* | ecpc* )
+ # Intel C++
+ with_gnu_ld=yes
+ # version 8.0 and above of icpc choke on multiply defined symbols
+ # if we add $predep_objects and $postdep_objects, however 7.1 and
+ # earlier do not add the objects themselves.
+ case `$CC -V 2>&1` in
+ *"Version 7."*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ ;;
+ *) # Version 8.0 or newer
+ tmp_idyn=
+ case $host_cpu in
+ ia64*) tmp_idyn=' -i_dynamic';;
+ esac
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ ;;
+ esac
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+ ;;
+ pgCC* | pgcpp*)
+ # Portland Group C++ compiler
+ case `$CC -V` in
+ *pgCC\ [[1-5]]* | *pgcpp\ [[1-5]]*)
+ _LT_TAGVAR(prelink_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $objs $libobjs $compile_deplibs~
+ compile_command="$compile_command `find $tpldir -name \*.o | $NL2SP`"'
+ _LT_TAGVAR(old_archive_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $oldobjs$old_deplibs~
+ $AR $AR_FLAGS $oldlib$oldobjs$old_deplibs `find $tpldir -name \*.o | $NL2SP`~
+ $RANLIB $oldlib'
+ _LT_TAGVAR(archive_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+ $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='tpldir=Template.dir~
+ rm -rf $tpldir~
+ $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+ $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+ ;;
+ *) # Version 6 will use weak symbols
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+ ;;
+ esac
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}--rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ ;;
+ cxx*)
+ # Compaq C++
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib ${wl}-retain-symbols-file $wl$export_symbols'
+
+ runpath_var=LD_RUN_PATH
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld"`; templist=`$ECHO "X$templist" | $Xsed -e "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ xl*)
+ # IBM XL 8.0 on PPC, with GNU ld
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ if test "x$supports_anon_versioning" = xyes; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+ fi
+ ;;
+ *)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C++ 5.9
+ _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file ${wl}$export_symbols'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ _LT_TAGVAR(compiler_needs_object, $1)=yes
+
+ # Not sure whether something based on
+ # $CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1
+ # would be better.
+ output_verbose_link_cmd='echo'
+
+ # Archives containing C++ object files must be created using
+ # "CC -xar", where "CC" is the Sun C++ compiler. This is
+ # necessary to make sure instantiated templates are included
+ # in the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+
+ lynxos*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ m88k*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ mvs*)
+ case $cc_basename in
+ cxx*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ netbsd*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags'
+ wlarc=
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ fi
+ # Workaround some broken pre-1.5 toolchains
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP conftest.$objext | $SED -e "s:-lgcc -lc -lgcc::"'
+ ;;
+
+ *nto* | *qnx*)
+ _LT_TAGVAR(ld_shlibs, $1)=yes
+ ;;
+
+ openbsd2*)
+ # C++ shared libraries are fairly broken
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ openbsd*)
+ if test -f /usr/libexec/ld.so; then
+ _LT_TAGVAR(hardcode_direct, $1)=yes
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file,$export_symbols -o $lib'
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+ fi
+ output_verbose_link_cmd=echo
+ else
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+
+ osf3* | osf4* | osf5*)
+ case $cc_basename in
+ KCC*)
+ # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+ # KCC will only create a shared library if the output file
+ # ends with ".so" (or ".sl" for HP-UX), so rename the library
+ # to its proper name (with version) after linking.
+ _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo "$lib" | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Archives containing C++ object files must be created using
+ # the KAI C++ compiler.
+ case $host in
+ osf3*) _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs' ;;
+ *) _LT_TAGVAR(old_archive_cmds, $1)='$CC -o $oldlib $oldobjs' ;;
+ esac
+ ;;
+ RCC*)
+ # Rational C++ 2.4.1
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ cxx*)
+ case $host in
+ osf3*)
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $soname `test -n "$verstring" && $ECHO "X${wl}-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ ;;
+ *)
+ _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done~
+ echo "-hidden">> $lib.exp~
+ $CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname ${wl}-input ${wl}$lib.exp `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib~
+ $RM $lib.exp'
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+ ;;
+ esac
+
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ #
+ # There doesn't appear to be a way to prevent this compiler from
+ # explicitly linking system object files so we need to strip them
+ # from the output so that they don't get included in the library
+ # dependencies.
+ output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld" | $GREP -v "ld:"`; templist=`$ECHO "X$templist" | $Xsed -e "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; $ECHO "X$list" | $Xsed'
+ ;;
+ *)
+ if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+ case $host in
+ osf3*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ ;;
+ esac
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+
+ else
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ fi
+ ;;
+ esac
+ ;;
+
+ psos*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ sunos4*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.x
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ lcc*)
+ # Lucid
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ solaris*)
+ case $cc_basename in
+ CC*)
+ # Sun C++ 4.2, 5.x and Centerline C++
+ _LT_TAGVAR(archive_cmds_need_lc,$1)=yes
+ _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -G${allow_undefined_flag} ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ case $host_os in
+ solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+ *)
+ # The compiler driver will combine and reorder linker options,
+ # but understands `-z linker_flag'.
+ # Supported since Solaris 2.6 (maybe 2.5.1?)
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+ ;;
+ esac
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+
+ output_verbose_link_cmd='echo'
+
+ # Archives containing C++ object files must be created using
+ # "CC -xar", where "CC" is the Sun C++ compiler. This is
+ # necessary to make sure instantiated templates are included
+ # in the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+ ;;
+ gcx*)
+ # Green Hills C++ Compiler
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+
+ # The C++ compiler must be used to create the archive.
+ _LT_TAGVAR(old_archive_cmds, $1)='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
+ ;;
+ *)
+ # GNU C++ compiler with Solaris linker
+ if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+ _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-z ${wl}defs'
+ if $CC --version | $GREP -v '^2\.7' > /dev/null; then
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+ else
+ # g++ 2.7 appears to require `-G' NOT `-shared' on this
+ # platform.
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+ # Commands to make compiler produce verbose output that lists
+ # what "hidden" libraries, object files and flags are used when
+ # linking a shared library.
+ output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP "\-L"'
+ fi
+
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $wl$libdir'
+ case $host_os in
+ solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+ *)
+ _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+ ;;
+ esac
+ fi
+ ;;
+ esac
+ ;;
+
+ sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ runpath_var='LD_RUN_PATH'
+
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6*)
+ # Note: We can NOT use -z defs as we might desire, because we do not
+ # link with -lc, and that would cause any symbols used from libc to
+ # always be unresolved, which means just about no library would
+ # ever link correctly. If we're not using GNU ld we use -z text
+ # though, which does catch some bad symbols but isn't as heavy-handed
+ # as -z defs.
+ _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+ _LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+ _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+ _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+ _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+ _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+ _LT_TAGVAR(link_all_deplibs, $1)=yes
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+ runpath_var='LD_RUN_PATH'
+
+ case $cc_basename in
+ CC*)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ ;;
+
+ tandem*)
+ case $cc_basename in
+ NCC*)
+ # NonStop-UX NCC 3.20
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+ ;;
+
+ vxworks*)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+
+ *)
+ # FIXME: insert proper C++ library support
+ _LT_TAGVAR(ld_shlibs, $1)=no
+ ;;
+ esac
+
+ AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+ test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+ _LT_TAGVAR(GCC, $1)="$GXX"
+ _LT_TAGVAR(LD, $1)="$LD"
+
+ ## CAVEAT EMPTOR:
+ ## There is no encapsulation within the following macros, do not change
+ ## the running order or otherwise move them around unless you know exactly
+ ## what you are doing...
+ _LT_SYS_HIDDEN_LIBDEPS($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+ fi # test -n "$compiler"
+
+ CC=$lt_save_CC
+ LDCXX=$LD
+ LD=$lt_save_LD
+ GCC=$lt_save_GCC
+ with_gnu_ld=$lt_save_with_gnu_ld
+ lt_cv_path_LDCXX=$lt_cv_path_LD
+ lt_cv_path_LD=$lt_save_path_LD
+ lt_cv_prog_gnu_ldcxx=$lt_cv_prog_gnu_ld
+ lt_cv_prog_gnu_ld=$lt_save_with_gnu_ld
+fi # test "$_lt_caught_CXX_error" != yes
+
+AC_LANG_POP
+])# _LT_LANG_CXX_CONFIG
+
+
+# _LT_SYS_HIDDEN_LIBDEPS([TAGNAME])
+# ---------------------------------
+# Figure out "hidden" library dependencies from verbose
+# compiler output when linking a shared library.
+# Parse the compiler output and extract the necessary
+# objects, libraries and library flags.
+m4_defun([_LT_SYS_HIDDEN_LIBDEPS],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+# Dependencies to place before and after the object being linked:
+_LT_TAGVAR(predep_objects, $1)=
+_LT_TAGVAR(postdep_objects, $1)=
+_LT_TAGVAR(predeps, $1)=
+_LT_TAGVAR(postdeps, $1)=
+_LT_TAGVAR(compiler_lib_search_path, $1)=
+
+dnl we can't use the lt_simple_compile_test_code here,
+dnl because it contains code intended for an executable,
+dnl not a library. It's possible we should let each
+dnl tag define a new lt_????_link_test_code variable,
+dnl but it's only used here...
+m4_if([$1], [], [cat > conftest.$ac_ext <<_LT_EOF
+int a;
+void foo (void) { a = 0; }
+_LT_EOF
+], [$1], [CXX], [cat > conftest.$ac_ext <<_LT_EOF
+class Foo
+{
+public:
+ Foo (void) { a = 0; }
+private:
+ int a;
+};
+_LT_EOF
+], [$1], [F77], [cat > conftest.$ac_ext <<_LT_EOF
+ subroutine foo
+ implicit none
+ integer*4 a
+ a=0
+ return
+ end
+_LT_EOF
+], [$1], [FC], [cat > conftest.$ac_ext <<_LT_EOF
+ subroutine foo
+ implicit none
+ integer a
+ a=0
+ return
+ end
+_LT_EOF
+], [$1], [GCJ], [cat > conftest.$ac_ext <<_LT_EOF
+public class foo {
+ private int a;
+ public void bar (void) {
+ a = 0;
+ }
+};
+_LT_EOF
+])
+dnl Parse the compiler output and extract the necessary
+dnl objects, libraries and library flags.
+if AC_TRY_EVAL(ac_compile); then
+ # Parse the compiler output and extract the necessary
+ # objects, libraries and library flags.
+
+ # Sentinel used to keep track of whether or not we are before
+ # the conftest object file.
+ pre_test_object_deps_done=no
+
+ for p in `eval "$output_verbose_link_cmd"`; do
+ case $p in
+
+ -L* | -R* | -l*)
+ # Some compilers place space between "-{L,R}" and the path.
+ # Remove the space.
+ if test $p = "-L" ||
+ test $p = "-R"; then
+ prev=$p
+ continue
+ else
+ prev=
+ fi
+
+ if test "$pre_test_object_deps_done" = no; then
+ case $p in
+ -L* | -R*)
+ # Internal compiler library paths should come after those
+ # provided the user. The postdeps already come after the
+ # user supplied libs so there is no need to process them.
+ if test -z "$_LT_TAGVAR(compiler_lib_search_path, $1)"; then
+ _LT_TAGVAR(compiler_lib_search_path, $1)="${prev}${p}"
+ else
+ _LT_TAGVAR(compiler_lib_search_path, $1)="${_LT_TAGVAR(compiler_lib_search_path, $1)} ${prev}${p}"
+ fi
+ ;;
+ # The "-l" case would never come before the object being
+ # linked, so don't bother handling this case.
+ esac
+ else
+ if test -z "$_LT_TAGVAR(postdeps, $1)"; then
+ _LT_TAGVAR(postdeps, $1)="${prev}${p}"
+ else
+ _LT_TAGVAR(postdeps, $1)="${_LT_TAGVAR(postdeps, $1)} ${prev}${p}"
+ fi
+ fi
+ ;;
+
+ *.$objext)
+ # This assumes that the test object file only shows up
+ # once in the compiler output.
+ if test "$p" = "conftest.$objext"; then
+ pre_test_object_deps_done=yes
+ continue
+ fi
+
+ if test "$pre_test_object_deps_done" = no; then
+ if test -z "$_LT_TAGVAR(predep_objects, $1)"; then
+ _LT_TAGVAR(predep_objects, $1)="$p"
+ else
+ _LT_TAGVAR(predep_objects, $1)="$_LT_TAGVAR(predep_objects, $1) $p"
+ fi
+ else
+ if test -z "$_LT_TAGVAR(postdep_objects, $1)"; then
+ _LT_TAGVAR(postdep_objects, $1)="$p"
+ else
+ _LT_TAGVAR(postdep_objects, $1)="$_LT_TAGVAR(postdep_objects, $1) $p"
+ fi
+ fi
+ ;;
+
+ *) ;; # Ignore the rest.
+
+ esac
+ done
+
+ # Clean up.
+ rm -f a.out a.exe
+else
+ echo "libtool.m4: error: problem compiling $1 test program"
+fi
+
+$RM -f confest.$objext
+
+# PORTME: override above test on systems where it is broken
+m4_if([$1], [CXX],
+[case $host_os in
+interix[[3-9]]*)
+ # Interix 3.5 installs completely hosed .la files for C++, so rather than
+ # hack all around it, let's just trust "g++" to DTRT.
+ _LT_TAGVAR(predep_objects,$1)=
+ _LT_TAGVAR(postdep_objects,$1)=
+ _LT_TAGVAR(postdeps,$1)=
+ ;;
+
+linux*)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C++ 5.9
+
+ # The more standards-conforming stlport4 library is
+ # incompatible with the Cstd library. Avoid specifying
+ # it if it's in CXXFLAGS. Ignore libCrun as
+ # -library=stlport4 depends on it.
+ case " $CXX $CXXFLAGS " in
+ *" -library=stlport4 "*)
+ solaris_use_stlport4=yes
+ ;;
+ esac
+
+ if test "$solaris_use_stlport4" != yes; then
+ _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+ fi
+ ;;
+ esac
+ ;;
+
+solaris*)
+ case $cc_basename in
+ CC*)
+ # The more standards-conforming stlport4 library is
+ # incompatible with the Cstd library. Avoid specifying
+ # it if it's in CXXFLAGS. Ignore libCrun as
+ # -library=stlport4 depends on it.
+ case " $CXX $CXXFLAGS " in
+ *" -library=stlport4 "*)
+ solaris_use_stlport4=yes
+ ;;
+ esac
+
+ # Adding this requires a known-good setup of shared libraries for
+ # Sun compiler versions before 5.6, else PIC objects from an old
+ # archive will be linked into the output, leading to subtle bugs.
+ if test "$solaris_use_stlport4" != yes; then
+ _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+ fi
+ ;;
+ esac
+ ;;
+esac
+])
+
+case " $_LT_TAGVAR(postdeps, $1) " in
+*" -lc "*) _LT_TAGVAR(archive_cmds_need_lc, $1)=no ;;
+esac
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=
+if test -n "${_LT_TAGVAR(compiler_lib_search_path, $1)}"; then
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=`echo " ${_LT_TAGVAR(compiler_lib_search_path, $1)}" | ${SED} -e 's! -L! !g' -e 's!^ !!'`
+fi
+_LT_TAGDECL([], [compiler_lib_search_dirs], [1],
+ [The directories searched by this compiler when creating a shared library])
+_LT_TAGDECL([], [predep_objects], [1],
+ [Dependencies to place before and after the objects being linked to
+ create a shared library])
+_LT_TAGDECL([], [postdep_objects], [1])
+_LT_TAGDECL([], [predeps], [1])
+_LT_TAGDECL([], [postdeps], [1])
+_LT_TAGDECL([], [compiler_lib_search_path], [1],
+ [The library search path used internally by the compiler when linking
+ a shared library])
+])# _LT_SYS_HIDDEN_LIBDEPS
+
+
+# _LT_PROG_F77
+# ------------
+# Since AC_PROG_F77 is broken, in that it returns the empty string
+# if there is no fortran compiler, we have our own version here.
+m4_defun([_LT_PROG_F77],
+[
+pushdef([AC_MSG_ERROR], [_lt_disable_F77=yes])
+AC_PROG_F77
+if test -z "$F77" || test "X$F77" = "Xno"; then
+ _lt_disable_F77=yes
+fi
+popdef([AC_MSG_ERROR])
+])# _LT_PROG_F77
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([_LT_PROG_F77], [])
+
+
+# _LT_LANG_F77_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a Fortran 77 compiler are
+# suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_F77_CONFIG],
+[AC_REQUIRE([_LT_PROG_F77])dnl
+AC_LANG_PUSH(Fortran 77)
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for f77 test sources.
+ac_ext=f
+
+# Object file extension for compiled f77 test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the F77 compiler isn't working. Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_F77" != yes; then
+ # Code to be used in simple compile tests
+ lt_simple_compile_test_code="\
+ subroutine t
+ return
+ end
+"
+
+ # Code to be used in simple link tests
+ lt_simple_link_test_code="\
+ program t
+ end
+"
+
+ # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+ _LT_TAG_COMPILER
+
+ # save warnings/boilerplate of simple test code
+ _LT_COMPILER_BOILERPLATE
+ _LT_LINKER_BOILERPLATE
+
+ # Allow CC to be a program name with arguments.
+ lt_save_CC="$CC"
+ lt_save_GCC=$GCC
+ CC=${F77-"f77"}
+ compiler=$CC
+ _LT_TAGVAR(compiler, $1)=$CC
+ _LT_CC_BASENAME([$compiler])
+ GCC=$G77
+ if test -n "$compiler"; then
+ AC_MSG_CHECKING([if libtool supports shared libraries])
+ AC_MSG_RESULT([$can_build_shared])
+
+ AC_MSG_CHECKING([whether to build shared libraries])
+ test "$can_build_shared" = "no" && enable_shared=no
+
+ # On AIX, shared libraries and static libraries use the same namespace, and
+ # are all built from PIC.
+ case $host_os in
+ aix3*)
+ test "$enable_shared" = yes && enable_static=no
+ if test -n "$RANLIB"; then
+ archive_cmds="$archive_cmds~\$RANLIB \$lib"
+ postinstall_cmds='$RANLIB $lib'
+ fi
+ ;;
+ aix[[4-9]]*)
+ if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+ test "$enable_shared" = yes && enable_static=no
+ fi
+ ;;
+ esac
+ AC_MSG_RESULT([$enable_shared])
+
+ AC_MSG_CHECKING([whether to build static libraries])
+ # Make sure either enable_shared or enable_static is yes.
+ test "$enable_shared" = yes || enable_static=yes
+ AC_MSG_RESULT([$enable_static])
+
+ _LT_TAGVAR(GCC, $1)="$G77"
+ _LT_TAGVAR(LD, $1)="$LD"
+
+ ## CAVEAT EMPTOR:
+ ## There is no encapsulation within the following macros, do not change
+ ## the running order or otherwise move them around unless you know exactly
+ ## what you are doing...
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+ fi # test -n "$compiler"
+
+ GCC=$lt_save_GCC
+ CC="$lt_save_CC"
+fi # test "$_lt_disable_F77" != yes
+
+AC_LANG_POP
+])# _LT_LANG_F77_CONFIG
+
+
+# _LT_PROG_FC
+# -----------
+# Since AC_PROG_FC is broken, in that it returns the empty string
+# if there is no fortran compiler, we have our own version here.
+m4_defun([_LT_PROG_FC],
+[
+pushdef([AC_MSG_ERROR], [_lt_disable_FC=yes])
+AC_PROG_FC
+if test -z "$FC" || test "X$FC" = "Xno"; then
+ _lt_disable_FC=yes
+fi
+popdef([AC_MSG_ERROR])
+])# _LT_PROG_FC
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([_LT_PROG_FC], [])
+
+
+# _LT_LANG_FC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for a Fortran compiler are
+# suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_FC_CONFIG],
+[AC_REQUIRE([_LT_PROG_FC])dnl
+AC_LANG_PUSH(Fortran)
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for fc test sources.
+ac_ext=${ac_fc_srcext-f}
+
+# Object file extension for compiled fc test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the FC compiler isn't working. Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_FC" != yes; then
+ # Code to be used in simple compile tests
+ lt_simple_compile_test_code="\
+ subroutine t
+ return
+ end
+"
+
+ # Code to be used in simple link tests
+ lt_simple_link_test_code="\
+ program t
+ end
+"
+
+ # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+ _LT_TAG_COMPILER
+
+ # save warnings/boilerplate of simple test code
+ _LT_COMPILER_BOILERPLATE
+ _LT_LINKER_BOILERPLATE
+
+ # Allow CC to be a program name with arguments.
+ lt_save_CC="$CC"
+ lt_save_GCC=$GCC
+ CC=${FC-"f95"}
+ compiler=$CC
+ GCC=$ac_cv_fc_compiler_gnu
+
+ _LT_TAGVAR(compiler, $1)=$CC
+ _LT_CC_BASENAME([$compiler])
+
+ if test -n "$compiler"; then
+ AC_MSG_CHECKING([if libtool supports shared libraries])
+ AC_MSG_RESULT([$can_build_shared])
+
+ AC_MSG_CHECKING([whether to build shared libraries])
+ test "$can_build_shared" = "no" && enable_shared=no
+
+ # On AIX, shared libraries and static libraries use the same namespace, and
+ # are all built from PIC.
+ case $host_os in
+ aix3*)
+ test "$enable_shared" = yes && enable_static=no
+ if test -n "$RANLIB"; then
+ archive_cmds="$archive_cmds~\$RANLIB \$lib"
+ postinstall_cmds='$RANLIB $lib'
+ fi
+ ;;
+ aix[[4-9]]*)
+ if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+ test "$enable_shared" = yes && enable_static=no
+ fi
+ ;;
+ esac
+ AC_MSG_RESULT([$enable_shared])
+
+ AC_MSG_CHECKING([whether to build static libraries])
+ # Make sure either enable_shared or enable_static is yes.
+ test "$enable_shared" = yes || enable_static=yes
+ AC_MSG_RESULT([$enable_static])
+
+ _LT_TAGVAR(GCC, $1)="$ac_cv_fc_compiler_gnu"
+ _LT_TAGVAR(LD, $1)="$LD"
+
+ ## CAVEAT EMPTOR:
+ ## There is no encapsulation within the following macros, do not change
+ ## the running order or otherwise move them around unless you know exactly
+ ## what you are doing...
+ _LT_SYS_HIDDEN_LIBDEPS($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_SYS_DYNAMIC_LINKER($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+ fi # test -n "$compiler"
+
+ GCC=$lt_save_GCC
+ CC="$lt_save_CC"
+fi # test "$_lt_disable_FC" != yes
+
+AC_LANG_POP
+])# _LT_LANG_FC_CONFIG
+
+
+# _LT_LANG_GCJ_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for the GNU Java Compiler compiler
+# are suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_GCJ_CONFIG],
+[AC_REQUIRE([LT_PROG_GCJ])dnl
+AC_LANG_SAVE
+
+# Source file extension for Java test sources.
+ac_ext=java
+
+# Object file extension for compiled Java test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="class foo {}"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='public class conftest { public static void main(String[[]] argv) {}; }'
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC="$CC"
+lt_save_GCC=$GCC
+GCC=yes
+CC=${GCJ-"gcj"}
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_TAGVAR(LD, $1)="$LD"
+_LT_CC_BASENAME([$compiler])
+
+# GCJ did not exist at the time GCC didn't implicitly link libc in.
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+
+if test -n "$compiler"; then
+ _LT_COMPILER_NO_RTTI($1)
+ _LT_COMPILER_PIC($1)
+ _LT_COMPILER_C_O($1)
+ _LT_COMPILER_FILE_LOCKS($1)
+ _LT_LINKER_SHLIBS($1)
+ _LT_LINKER_HARDCODE_LIBPATH($1)
+
+ _LT_CONFIG($1)
+fi
+
+AC_LANG_RESTORE
+
+GCC=$lt_save_GCC
+CC="$lt_save_CC"
+])# _LT_LANG_GCJ_CONFIG
+
+
+# _LT_LANG_RC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for the Windows resource compiler
+# are suitably defined. These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_RC_CONFIG],
+[AC_REQUIRE([LT_PROG_RC])dnl
+AC_LANG_SAVE
+
+# Source file extension for RC test sources.
+ac_ext=rc
+
+# Object file extension for compiled RC test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code='sample MENU { MENUITEM "&Soup", 100, CHECKED }'
+
+# Code to be used in simple link tests
+lt_simple_link_test_code="$lt_simple_compile_test_code"
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC="$CC"
+lt_save_GCC=$GCC
+GCC=
+CC=${RC-"windres"}
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_CC_BASENAME([$compiler])
+_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+
+if test -n "$compiler"; then
+ :
+ _LT_CONFIG($1)
+fi
+
+GCC=$lt_save_GCC
+AC_LANG_RESTORE
+CC="$lt_save_CC"
+])# _LT_LANG_RC_CONFIG
+
+
+# LT_PROG_GCJ
+# -----------
+AC_DEFUN([LT_PROG_GCJ],
+[m4_ifdef([AC_PROG_GCJ], [AC_PROG_GCJ],
+ [m4_ifdef([A][M_PROG_GCJ], [A][M_PROG_GCJ],
+ [AC_CHECK_TOOL(GCJ, gcj,)
+ test "x${GCJFLAGS+set}" = xset || GCJFLAGS="-g -O2"
+ AC_SUBST(GCJFLAGS)])])[]dnl
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_GCJ], [LT_PROG_GCJ])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_GCJ], [])
+
+
+# LT_PROG_RC
+# ----------
+AC_DEFUN([LT_PROG_RC],
+[AC_CHECK_TOOL(RC, windres,)
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_RC], [LT_PROG_RC])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_RC], [])
+
+
+# _LT_DECL_EGREP
+# --------------
+# If we don't have a new enough Autoconf to choose the best grep
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_EGREP],
+[AC_REQUIRE([AC_PROG_EGREP])dnl
+AC_REQUIRE([AC_PROG_FGREP])dnl
+test -z "$GREP" && GREP=grep
+_LT_DECL([], [GREP], [1], [A grep program that handles long lines])
+_LT_DECL([], [EGREP], [1], [An ERE matcher])
+_LT_DECL([], [FGREP], [1], [A literal string matcher])
+dnl Non-bleeding-edge autoconf doesn't subst GREP, so do it here too
+AC_SUBST([GREP])
+])
+
+
+# _LT_DECL_OBJDUMP
+# --------------
+# If we don't have a new enough Autoconf to choose the best objdump
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_OBJDUMP],
+[AC_CHECK_TOOL(OBJDUMP, objdump, false)
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [1], [An object symbol dumper])
+AC_SUBST([OBJDUMP])
+])
+
+
+# _LT_DECL_SED
+# ------------
+# Check for a fully-functional sed program, that truncates
+# as few characters as possible. Prefer GNU sed if found.
+m4_defun([_LT_DECL_SED],
+[AC_PROG_SED
+test -z "$SED" && SED=sed
+Xsed="$SED -e 1s/^X//"
+_LT_DECL([], [SED], [1], [A sed program that does not truncate output])
+_LT_DECL([], [Xsed], ["\$SED -e 1s/^X//"],
+ [Sed that helps us avoid accidentally triggering echo(1) options like -n])
+])# _LT_DECL_SED
+
+m4_ifndef([AC_PROG_SED], [
+# NOTE: This macro has been submitted for inclusion into #
+# GNU Autoconf as AC_PROG_SED. When it is available in #
+# a released version of Autoconf we should remove this #
+# macro and use it instead. #
+
+m4_defun([AC_PROG_SED],
+[AC_MSG_CHECKING([for a sed that does not truncate output])
+AC_CACHE_VAL(lt_cv_path_SED,
+[# Loop through the user's path and test for sed and gsed.
+# Then use that list of sed's as ones to test for truncation.
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for lt_ac_prog in sed gsed; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if $as_executable_p "$as_dir/$lt_ac_prog$ac_exec_ext"; then
+ lt_ac_sed_list="$lt_ac_sed_list $as_dir/$lt_ac_prog$ac_exec_ext"
+ fi
+ done
+ done
+done
+IFS=$as_save_IFS
+lt_ac_max=0
+lt_ac_count=0
+# Add /usr/xpg4/bin/sed as it is typically found on Solaris
+# along with /bin/sed that truncates output.
+for lt_ac_sed in $lt_ac_sed_list /usr/xpg4/bin/sed; do
+ test ! -f $lt_ac_sed && continue
+ cat /dev/null > conftest.in
+ lt_ac_count=0
+ echo $ECHO_N "0123456789$ECHO_C" >conftest.in
+ # Check for GNU sed and select it if it is found.
+ if "$lt_ac_sed" --version 2>&1 < /dev/null | grep 'GNU' > /dev/null; then
+ lt_cv_path_SED=$lt_ac_sed
+ break
+ fi
+ while true; do
+ cat conftest.in conftest.in >conftest.tmp
+ mv conftest.tmp conftest.in
+ cp conftest.in conftest.nl
+ echo >>conftest.nl
+ $lt_ac_sed -e 's/a$//' < conftest.nl >conftest.out || break
+ cmp -s conftest.out conftest.nl || break
+ # 10000 chars as input seems more than enough
+ test $lt_ac_count -gt 10 && break
+ lt_ac_count=`expr $lt_ac_count + 1`
+ if test $lt_ac_count -gt $lt_ac_max; then
+ lt_ac_max=$lt_ac_count
+ lt_cv_path_SED=$lt_ac_sed
+ fi
+ done
+done
+])
+SED=$lt_cv_path_SED
+AC_SUBST([SED])
+AC_MSG_RESULT([$SED])
+])#AC_PROG_SED
+])#m4_ifndef
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_SED], [AC_PROG_SED])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_SED], [])
+
+
+# _LT_CHECK_SHELL_FEATURES
+# ------------------------
+# Find out whether the shell is Bourne or XSI compatible,
+# or has some other useful features.
+m4_defun([_LT_CHECK_SHELL_FEATURES],
+[AC_MSG_CHECKING([whether the shell understands some XSI constructs])
+# Try some XSI features
+xsi_shell=no
+( _lt_dummy="a/b/c"
+ test "${_lt_dummy##*/},${_lt_dummy%/*},"${_lt_dummy%"$_lt_dummy"}, \
+ = c,a/b,, \
+ && eval 'test $(( 1 + 1 )) -eq 2 \
+ && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
+ && xsi_shell=yes
+AC_MSG_RESULT([$xsi_shell])
+_LT_CONFIG_LIBTOOL_INIT([xsi_shell='$xsi_shell'])
+
+AC_MSG_CHECKING([whether the shell understands "+="])
+lt_shell_append=no
+( foo=bar; set foo baz; eval "$[1]+=\$[2]" && test "$foo" = barbaz ) \
+ >/dev/null 2>&1 \
+ && lt_shell_append=yes
+AC_MSG_RESULT([$lt_shell_append])
+_LT_CONFIG_LIBTOOL_INIT([lt_shell_append='$lt_shell_append'])
+
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+ lt_unset=unset
+else
+ lt_unset=false
+fi
+_LT_DECL([], [lt_unset], [0], [whether the shell understands "unset"])dnl
+
+# test EBCDIC or ASCII
+case `echo X|tr X '\101'` in
+ A) # ASCII based system
+ # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
+ lt_SP2NL='tr \040 \012'
+ lt_NL2SP='tr \015\012 \040\040'
+ ;;
+ *) # EBCDIC based system
+ lt_SP2NL='tr \100 \n'
+ lt_NL2SP='tr \r\n \100\100'
+ ;;
+esac
+_LT_DECL([SP2NL], [lt_SP2NL], [1], [turn spaces into newlines])dnl
+_LT_DECL([NL2SP], [lt_NL2SP], [1], [turn newlines into spaces])dnl
+])# _LT_CHECK_SHELL_FEATURES
+
+
+# _LT_PROG_XSI_SHELLFNS
+# ---------------------
+# Bourne and XSI compatible variants of some useful shell functions.
+m4_defun([_LT_PROG_XSI_SHELLFNS],
+[case $xsi_shell in
+ yes)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE. If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac
+}
+
+# func_basename file
+func_basename ()
+{
+ func_basename_result="${1##*/}"
+}
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+# dirname: Compute the dirname of FILE. If nonempty,
+# add APPEND to the result, otherwise set result
+# to NONDIR_REPLACEMENT.
+# value returned in "$func_dirname_result"
+# basename: Compute filename of FILE.
+# value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac
+ func_basename_result="${1##*/}"
+}
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+func_stripname ()
+{
+ # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
+ # positional parameters, so assign one to ordinary parameter first.
+ func_stripname_result=${3}
+ func_stripname_result=${func_stripname_result#"${1}"}
+ func_stripname_result=${func_stripname_result%"${2}"}
+}
+
+# func_opt_split
+func_opt_split ()
+{
+ func_opt_split_opt=${1%%=*}
+ func_opt_split_arg=${1#*=}
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+ case ${1} in
+ *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
+ *) func_lo2o_result=${1} ;;
+ esac
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+ func_xform_result=${1%.*}.lo
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+ func_arith_result=$(( $[*] ))
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+ func_len_result=${#1}
+}
+
+_LT_EOF
+ ;;
+ *) # Bourne compatible functions.
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE. If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+ # Extract subdirectory from the argument.
+ func_dirname_result=`$ECHO "X${1}" | $Xsed -e "$dirname"`
+ if test "X$func_dirname_result" = "X${1}"; then
+ func_dirname_result="${3}"
+ else
+ func_dirname_result="$func_dirname_result${2}"
+ fi
+}
+
+# func_basename file
+func_basename ()
+{
+ func_basename_result=`$ECHO "X${1}" | $Xsed -e "$basename"`
+}
+
+dnl func_dirname_and_basename
+dnl A portable version of this function is already defined in general.m4sh
+dnl so there is no need for it here.
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+# func_strip_suffix prefix name
+func_stripname ()
+{
+ case ${2} in
+ .*) func_stripname_result=`$ECHO "X${3}" \
+ | $Xsed -e "s%^${1}%%" -e "s%\\\\${2}\$%%"`;;
+ *) func_stripname_result=`$ECHO "X${3}" \
+ | $Xsed -e "s%^${1}%%" -e "s%${2}\$%%"`;;
+ esac
+}
+
+# sed scripts:
+my_sed_long_opt='1s/^\(-[[^=]]*\)=.*/\1/;q'
+my_sed_long_arg='1s/^-[[^=]]*=//'
+
+# func_opt_split
+func_opt_split ()
+{
+ func_opt_split_opt=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_opt"`
+ func_opt_split_arg=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_arg"`
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+ func_lo2o_result=`$ECHO "X${1}" | $Xsed -e "$lo2o"`
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+ func_xform_result=`$ECHO "X${1}" | $Xsed -e 's/\.[[^.]]*$/.lo/'`
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+ func_arith_result=`expr "$[@]"`
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+ func_len_result=`expr "$[1]" : ".*" 2>/dev/null || echo $max_cmd_len`
+}
+
+_LT_EOF
+esac
+
+case $lt_shell_append in
+ yes)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+ eval "$[1]+=\$[2]"
+}
+_LT_EOF
+ ;;
+ *)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+ eval "$[1]=\$$[1]\$[2]"
+}
+
+_LT_EOF
+ ;;
+ esac
+])
+
+# Helper functions for option handling. -*- Autoconf -*-
+#
+# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 6 ltoptions.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])])
+
+
+# _LT_MANGLE_OPTION(MACRO-NAME, OPTION-NAME)
+# ------------------------------------------
+m4_define([_LT_MANGLE_OPTION],
+[[_LT_OPTION_]m4_bpatsubst($1__$2, [[^a-zA-Z0-9_]], [_])])
+
+
+# _LT_SET_OPTION(MACRO-NAME, OPTION-NAME)
+# ---------------------------------------
+# Set option OPTION-NAME for macro MACRO-NAME, and if there is a
+# matching handler defined, dispatch to it. Other OPTION-NAMEs are
+# saved as a flag.
+m4_define([_LT_SET_OPTION],
+[m4_define(_LT_MANGLE_OPTION([$1], [$2]))dnl
+m4_ifdef(_LT_MANGLE_DEFUN([$1], [$2]),
+ _LT_MANGLE_DEFUN([$1], [$2]),
+ [m4_warning([Unknown $1 option `$2'])])[]dnl
+])
+
+
+# _LT_IF_OPTION(MACRO-NAME, OPTION-NAME, IF-SET, [IF-NOT-SET])
+# ------------------------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+m4_define([_LT_IF_OPTION],
+[m4_ifdef(_LT_MANGLE_OPTION([$1], [$2]), [$3], [$4])])
+
+
+# _LT_UNLESS_OPTIONS(MACRO-NAME, OPTION-LIST, IF-NOT-SET)
+# -------------------------------------------------------
+# Execute IF-NOT-SET unless all options in OPTION-LIST for MACRO-NAME
+# are set.
+m4_define([_LT_UNLESS_OPTIONS],
+[m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+ [m4_ifdef(_LT_MANGLE_OPTION([$1], _LT_Option),
+ [m4_define([$0_found])])])[]dnl
+m4_ifdef([$0_found], [m4_undefine([$0_found])], [$3
+])[]dnl
+])
+
+
+# _LT_SET_OPTIONS(MACRO-NAME, OPTION-LIST)
+# ----------------------------------------
+# OPTION-LIST is a space-separated list of Libtool options associated
+# with MACRO-NAME. If any OPTION has a matching handler declared with
+# LT_OPTION_DEFINE, dispatch to that macro; otherwise complain about
+# the unknown option and exit.
+m4_defun([_LT_SET_OPTIONS],
+[# Set options
+m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+ [_LT_SET_OPTION([$1], _LT_Option)])
+
+m4_if([$1],[LT_INIT],[
+ dnl
+ dnl Simply set some default values (i.e off) if boolean options were not
+ dnl specified:
+ _LT_UNLESS_OPTIONS([LT_INIT], [dlopen], [enable_dlopen=no
+ ])
+ _LT_UNLESS_OPTIONS([LT_INIT], [win32-dll], [enable_win32_dll=no
+ ])
+ dnl
+ dnl If no reference was made to various pairs of opposing options, then
+ dnl we run the default mode handler for the pair. For example, if neither
+ dnl `shared' nor `disable-shared' was passed, we enable building of shared
+ dnl archives by default:
+ _LT_UNLESS_OPTIONS([LT_INIT], [shared disable-shared], [_LT_ENABLE_SHARED])
+ _LT_UNLESS_OPTIONS([LT_INIT], [static disable-static], [_LT_ENABLE_STATIC])
+ _LT_UNLESS_OPTIONS([LT_INIT], [pic-only no-pic], [_LT_WITH_PIC])
+ _LT_UNLESS_OPTIONS([LT_INIT], [fast-install disable-fast-install],
+ [_LT_ENABLE_FAST_INSTALL])
+ ])
+])# _LT_SET_OPTIONS
+
+
+
+# _LT_MANGLE_DEFUN(MACRO-NAME, OPTION-NAME)
+# -----------------------------------------
+m4_define([_LT_MANGLE_DEFUN],
+[[_LT_OPTION_DEFUN_]m4_bpatsubst(m4_toupper([$1__$2]), [[^A-Z0-9_]], [_])])
+
+
+# LT_OPTION_DEFINE(MACRO-NAME, OPTION-NAME, CODE)
+# -----------------------------------------------
+m4_define([LT_OPTION_DEFINE],
+[m4_define(_LT_MANGLE_DEFUN([$1], [$2]), [$3])[]dnl
+])# LT_OPTION_DEFINE
+
+
+# dlopen
+# ------
+LT_OPTION_DEFINE([LT_INIT], [dlopen], [enable_dlopen=yes
+])
+
+AU_DEFUN([AC_LIBTOOL_DLOPEN],
+[_LT_SET_OPTION([LT_INIT], [dlopen])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `dlopen' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN], [])
+
+
+# win32-dll
+# ---------
+# Declare package support for building win32 dll's.
+LT_OPTION_DEFINE([LT_INIT], [win32-dll],
+[enable_win32_dll=yes
+
+case $host in
+*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-cegcc*)
+ AC_CHECK_TOOL(AS, as, false)
+ AC_CHECK_TOOL(DLLTOOL, dlltool, false)
+ AC_CHECK_TOOL(OBJDUMP, objdump, false)
+ ;;
+esac
+
+test -z "$AS" && AS=as
+_LT_DECL([], [AS], [0], [Assembler program])dnl
+
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+_LT_DECL([], [DLLTOOL], [0], [DLL creation program])dnl
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [0], [Object dumper program])dnl
+])# win32-dll
+
+AU_DEFUN([AC_LIBTOOL_WIN32_DLL],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+_LT_SET_OPTION([LT_INIT], [win32-dll])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `win32-dll' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_WIN32_DLL], [])
+
+
+# _LT_ENABLE_SHARED([DEFAULT])
+# ----------------------------
+# implement the --enable-shared flag, and supports the `shared' and
+# `disable-shared' LT_INIT options.
+# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_SHARED],
+[m4_define([_LT_ENABLE_SHARED_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([shared],
+ [AS_HELP_STRING([--enable-shared@<:@=PKGS@:>@],
+ [build shared libraries @<:@default=]_LT_ENABLE_SHARED_DEFAULT[@:>@])],
+ [p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_shared=yes ;;
+ no) enable_shared=no ;;
+ *)
+ enable_shared=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_shared=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac],
+ [enable_shared=]_LT_ENABLE_SHARED_DEFAULT)
+
+ _LT_DECL([build_libtool_libs], [enable_shared], [0],
+ [Whether or not to build shared libraries])
+])# _LT_ENABLE_SHARED
+
+LT_OPTION_DEFINE([LT_INIT], [shared], [_LT_ENABLE_SHARED([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-shared], [_LT_ENABLE_SHARED([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[shared])
+])
+
+AC_DEFUN([AC_DISABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], [disable-shared])
+])
+
+AU_DEFUN([AM_ENABLE_SHARED], [AC_ENABLE_SHARED($@)])
+AU_DEFUN([AM_DISABLE_SHARED], [AC_DISABLE_SHARED($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_SHARED], [])
+dnl AC_DEFUN([AM_DISABLE_SHARED], [])
+
+
+
+# _LT_ENABLE_STATIC([DEFAULT])
+# ----------------------------
+# implement the --enable-static flag, and support the `static' and
+# `disable-static' LT_INIT options.
+# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_STATIC],
+[m4_define([_LT_ENABLE_STATIC_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([static],
+ [AS_HELP_STRING([--enable-static@<:@=PKGS@:>@],
+ [build static libraries @<:@default=]_LT_ENABLE_STATIC_DEFAULT[@:>@])],
+ [p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_static=yes ;;
+ no) enable_static=no ;;
+ *)
+ enable_static=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_static=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac],
+ [enable_static=]_LT_ENABLE_STATIC_DEFAULT)
+
+ _LT_DECL([build_old_libs], [enable_static], [0],
+ [Whether or not to build static libraries])
+])# _LT_ENABLE_STATIC
+
+LT_OPTION_DEFINE([LT_INIT], [static], [_LT_ENABLE_STATIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-static], [_LT_ENABLE_STATIC([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[static])
+])
+
+AC_DEFUN([AC_DISABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], [disable-static])
+])
+
+AU_DEFUN([AM_ENABLE_STATIC], [AC_ENABLE_STATIC($@)])
+AU_DEFUN([AM_DISABLE_STATIC], [AC_DISABLE_STATIC($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_STATIC], [])
+dnl AC_DEFUN([AM_DISABLE_STATIC], [])
+
+
+
+# _LT_ENABLE_FAST_INSTALL([DEFAULT])
+# ----------------------------------
+# implement the --enable-fast-install flag, and support the `fast-install'
+# and `disable-fast-install' LT_INIT options.
+# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_FAST_INSTALL],
+[m4_define([_LT_ENABLE_FAST_INSTALL_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([fast-install],
+ [AS_HELP_STRING([--enable-fast-install@<:@=PKGS@:>@],
+ [optimize for fast installation @<:@default=]_LT_ENABLE_FAST_INSTALL_DEFAULT[@:>@])],
+ [p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_fast_install=yes ;;
+ no) enable_fast_install=no ;;
+ *)
+ enable_fast_install=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_fast_install=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac],
+ [enable_fast_install=]_LT_ENABLE_FAST_INSTALL_DEFAULT)
+
+_LT_DECL([fast_install], [enable_fast_install], [0],
+ [Whether or not to optimize for fast installation])dnl
+])# _LT_ENABLE_FAST_INSTALL
+
+LT_OPTION_DEFINE([LT_INIT], [fast-install], [_LT_ENABLE_FAST_INSTALL([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-fast-install], [_LT_ENABLE_FAST_INSTALL([no])])
+
+# Old names:
+AU_DEFUN([AC_ENABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `fast-install' option into LT_INIT's first parameter.])
+])
+
+AU_DEFUN([AC_DISABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], [disable-fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `disable-fast-install' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_ENABLE_FAST_INSTALL], [])
+dnl AC_DEFUN([AM_DISABLE_FAST_INSTALL], [])
+
+
+# _LT_WITH_PIC([MODE])
+# --------------------
+# implement the --with-pic flag, and support the `pic-only' and `no-pic'
+# LT_INIT options.
+# MODE is either `yes' or `no'. If omitted, it defaults to `both'.
+m4_define([_LT_WITH_PIC],
+[AC_ARG_WITH([pic],
+ [AS_HELP_STRING([--with-pic],
+ [try to use only PIC/non-PIC objects @<:@default=use both@:>@])],
+ [pic_mode="$withval"],
+ [pic_mode=default])
+
+test -z "$pic_mode" && pic_mode=m4_default([$1], [default])
+
+_LT_DECL([], [pic_mode], [0], [What type of objects to build])dnl
+])# _LT_WITH_PIC
+
+LT_OPTION_DEFINE([LT_INIT], [pic-only], [_LT_WITH_PIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [no-pic], [_LT_WITH_PIC([no])])
+
+# Old name:
+AU_DEFUN([AC_LIBTOOL_PICMODE],
+[_LT_SET_OPTION([LT_INIT], [pic-only])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `pic-only' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_PICMODE], [])
+
+
+m4_define([_LTDL_MODE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [nonrecursive],
+ [m4_define([_LTDL_MODE], [nonrecursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [recursive],
+ [m4_define([_LTDL_MODE], [recursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [subproject],
+ [m4_define([_LTDL_MODE], [subproject])])
+
+m4_define([_LTDL_TYPE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [installable],
+ [m4_define([_LTDL_TYPE], [installable])])
+LT_OPTION_DEFINE([LTDL_INIT], [convenience],
+ [m4_define([_LTDL_TYPE], [convenience])])
+
+# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*-
+#
+# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 6 ltsugar.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
+
+
+# lt_join(SEP, ARG1, [ARG2...])
+# -----------------------------
+# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
+# associated separator.
+# Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
+# versions in m4sugar had bugs.
+m4_define([lt_join],
+[m4_if([$#], [1], [],
+ [$#], [2], [[$2]],
+ [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
+m4_define([_lt_join],
+[m4_if([$#$2], [2], [],
+ [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
+
+
+# lt_car(LIST)
+# lt_cdr(LIST)
+# ------------
+# Manipulate m4 lists.
+# These macros are necessary as long as will still need to support
+# Autoconf-2.59 which quotes differently.
+m4_define([lt_car], [[$1]])
+m4_define([lt_cdr],
+[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
+ [$#], 1, [],
+ [m4_dquote(m4_shift($@))])])
+m4_define([lt_unquote], $1)
+
+
+# lt_append(MACRO-NAME, STRING, [SEPARATOR])
+# ------------------------------------------
+# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
+# Note that neither SEPARATOR nor STRING are expanded; they are appended
+# to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
+# No SEPARATOR is output if MACRO-NAME was previously undefined (different
+# than defined and empty).
+#
+# This macro is needed until we can rely on Autoconf 2.62, since earlier
+# versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
+m4_define([lt_append],
+[m4_define([$1],
+ m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
+
+
+
+# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
+# ----------------------------------------------------------
+# Produce a SEP delimited list of all paired combinations of elements of
+# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list
+# has the form PREFIXmINFIXSUFFIXn.
+# Needed until we can rely on m4_combine added in Autoconf 2.62.
+m4_define([lt_combine],
+[m4_if(m4_eval([$# > 3]), [1],
+ [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
+[[m4_foreach([_Lt_prefix], [$2],
+ [m4_foreach([_Lt_suffix],
+ ]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
+ [_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
+
+
+# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
+# -----------------------------------------------------------------------
+# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
+# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
+m4_define([lt_if_append_uniq],
+[m4_ifdef([$1],
+ [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
+ [lt_append([$1], [$2], [$3])$4],
+ [$5])],
+ [lt_append([$1], [$2], [$3])$4])])
+
+
+# lt_dict_add(DICT, KEY, VALUE)
+# -----------------------------
+m4_define([lt_dict_add],
+[m4_define([$1($2)], [$3])])
+
+
+# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
+# --------------------------------------------
+m4_define([lt_dict_add_subkey],
+[m4_define([$1($2:$3)], [$4])])
+
+
+# lt_dict_fetch(DICT, KEY, [SUBKEY])
+# ----------------------------------
+m4_define([lt_dict_fetch],
+[m4_ifval([$3],
+ m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
+ m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
+
+
+# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
+# -----------------------------------------------------------------
+m4_define([lt_if_dict_fetch],
+[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
+ [$5],
+ [$6])])
+
+
+# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
+# --------------------------------------------------------------
+m4_define([lt_dict_filter],
+[m4_if([$5], [], [],
+ [lt_join(m4_quote(m4_default([$4], [[, ]])),
+ lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
+ [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
+])
+
+# ltversion.m4 -- version numbers -*- Autoconf -*-
+#
+# Copyright (C) 2004 Free Software Foundation, Inc.
+# Written by Scott James Remnant, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# Generated from ltversion.in.
+
+# serial 3017 ltversion.m4
+# This file is part of GNU Libtool
+
+m4_define([LT_PACKAGE_VERSION], [2.2.6b])
+m4_define([LT_PACKAGE_REVISION], [1.3017])
+
+AC_DEFUN([LTVERSION_VERSION],
+[macro_version='2.2.6b'
+macro_revision='1.3017'
+_LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?])
+_LT_DECL(, macro_revision, 0)
+])
+
+# lt~obsolete.m4 -- aclocal satisfying obsolete definitions. -*-Autoconf-*-
+#
+# Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
+# Written by Scott James Remnant, 2004.
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 4 lt~obsolete.m4
+
+# These exist entirely to fool aclocal when bootstrapping libtool.
+#
+# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN)
+# which have later been changed to m4_define as they aren't part of the
+# exported API, or moved to Autoconf or Automake where they belong.
+#
+# The trouble is, aclocal is a bit thick. It'll see the old AC_DEFUN
+# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us
+# using a macro with the same name in our local m4/libtool.m4 it'll
+# pull the old libtool.m4 in (it doesn't see our shiny new m4_define
+# and doesn't know about Autoconf macros at all.)
+#
+# So we provide this file, which has a silly filename so it's always
+# included after everything else. This provides aclocal with the
+# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything
+# because those macros already exist, or will be overwritten later.
+# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6.
+#
+# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here.
+# Yes, that means every name once taken will need to remain here until
+# we give up compatibility with versions before 1.7, at which point
+# we need to keep only those names which we still refer to.
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])])
+
+m4_ifndef([AC_LIBTOOL_LINKER_OPTION], [AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])])
+m4_ifndef([AC_PROG_EGREP], [AC_DEFUN([AC_PROG_EGREP])])
+m4_ifndef([_LT_AC_PROG_ECHO_BACKSLASH], [AC_DEFUN([_LT_AC_PROG_ECHO_BACKSLASH])])
+m4_ifndef([_LT_AC_SHELL_INIT], [AC_DEFUN([_LT_AC_SHELL_INIT])])
+m4_ifndef([_LT_AC_SYS_LIBPATH_AIX], [AC_DEFUN([_LT_AC_SYS_LIBPATH_AIX])])
+m4_ifndef([_LT_PROG_LTMAIN], [AC_DEFUN([_LT_PROG_LTMAIN])])
+m4_ifndef([_LT_AC_TAGVAR], [AC_DEFUN([_LT_AC_TAGVAR])])
+m4_ifndef([AC_LTDL_ENABLE_INSTALL], [AC_DEFUN([AC_LTDL_ENABLE_INSTALL])])
+m4_ifndef([AC_LTDL_PREOPEN], [AC_DEFUN([AC_LTDL_PREOPEN])])
+m4_ifndef([_LT_AC_SYS_COMPILER], [AC_DEFUN([_LT_AC_SYS_COMPILER])])
+m4_ifndef([_LT_AC_LOCK], [AC_DEFUN([_LT_AC_LOCK])])
+m4_ifndef([AC_LIBTOOL_SYS_OLD_ARCHIVE], [AC_DEFUN([AC_LIBTOOL_SYS_OLD_ARCHIVE])])
+m4_ifndef([_LT_AC_TRY_DLOPEN_SELF], [AC_DEFUN([_LT_AC_TRY_DLOPEN_SELF])])
+m4_ifndef([AC_LIBTOOL_PROG_CC_C_O], [AC_DEFUN([AC_LIBTOOL_PROG_CC_C_O])])
+m4_ifndef([AC_LIBTOOL_SYS_HARD_LINK_LOCKS], [AC_DEFUN([AC_LIBTOOL_SYS_HARD_LINK_LOCKS])])
+m4_ifndef([AC_LIBTOOL_OBJDIR], [AC_DEFUN([AC_LIBTOOL_OBJDIR])])
+m4_ifndef([AC_LTDL_OBJDIR], [AC_DEFUN([AC_LTDL_OBJDIR])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH], [AC_DEFUN([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH])])
+m4_ifndef([AC_LIBTOOL_SYS_LIB_STRIP], [AC_DEFUN([AC_LIBTOOL_SYS_LIB_STRIP])])
+m4_ifndef([AC_PATH_MAGIC], [AC_DEFUN([AC_PATH_MAGIC])])
+m4_ifndef([AC_PROG_LD_GNU], [AC_DEFUN([AC_PROG_LD_GNU])])
+m4_ifndef([AC_PROG_LD_RELOAD_FLAG], [AC_DEFUN([AC_PROG_LD_RELOAD_FLAG])])
+m4_ifndef([AC_DEPLIBS_CHECK_METHOD], [AC_DEFUN([AC_DEPLIBS_CHECK_METHOD])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_NO_RTTI], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_NO_RTTI])])
+m4_ifndef([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE], [AC_DEFUN([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_PIC], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_PIC])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_SHLIBS], [AC_DEFUN([AC_LIBTOOL_PROG_LD_SHLIBS])])
+m4_ifndef([AC_LIBTOOL_POSTDEP_PREDEP], [AC_DEFUN([AC_LIBTOOL_POSTDEP_PREDEP])])
+m4_ifndef([LT_AC_PROG_EGREP], [AC_DEFUN([LT_AC_PROG_EGREP])])
+m4_ifndef([LT_AC_PROG_SED], [AC_DEFUN([LT_AC_PROG_SED])])
+m4_ifndef([_LT_CC_BASENAME], [AC_DEFUN([_LT_CC_BASENAME])])
+m4_ifndef([_LT_COMPILER_BOILERPLATE], [AC_DEFUN([_LT_COMPILER_BOILERPLATE])])
+m4_ifndef([_LT_LINKER_BOILERPLATE], [AC_DEFUN([_LT_LINKER_BOILERPLATE])])
+m4_ifndef([_AC_PROG_LIBTOOL], [AC_DEFUN([_AC_PROG_LIBTOOL])])
+m4_ifndef([AC_LIBTOOL_SETUP], [AC_DEFUN([AC_LIBTOOL_SETUP])])
+m4_ifndef([_LT_AC_CHECK_DLFCN], [AC_DEFUN([_LT_AC_CHECK_DLFCN])])
+m4_ifndef([AC_LIBTOOL_SYS_DYNAMIC_LINKER], [AC_DEFUN([AC_LIBTOOL_SYS_DYNAMIC_LINKER])])
+m4_ifndef([_LT_AC_TAGCONFIG], [AC_DEFUN([_LT_AC_TAGCONFIG])])
+m4_ifndef([AC_DISABLE_FAST_INSTALL], [AC_DEFUN([AC_DISABLE_FAST_INSTALL])])
+m4_ifndef([_LT_AC_LANG_CXX], [AC_DEFUN([_LT_AC_LANG_CXX])])
+m4_ifndef([_LT_AC_LANG_F77], [AC_DEFUN([_LT_AC_LANG_F77])])
+m4_ifndef([_LT_AC_LANG_GCJ], [AC_DEFUN([_LT_AC_LANG_GCJ])])
+m4_ifndef([AC_LIBTOOL_RC], [AC_DEFUN([AC_LIBTOOL_RC])])
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+# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
+# loop where config.status creates the headers, so we can generate
+# our stamp files there.
+AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
+[# Compute $1's index in $config_headers.
+_am_arg=$1
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+ case $_am_header in
+ $_am_arg | $_am_arg:* )
+ break ;;
+ * )
+ _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+ esac
+done
+echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
+
+# Copyright (C) 2001, 2003, 2005, 2008 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_SH
+# ------------------
+# Define $install_sh.
+AC_DEFUN([AM_PROG_INSTALL_SH],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+if test x"${install_sh}" != xset; then
+ case $am_aux_dir in
+ *\ * | *\ *)
+ install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+ *)
+ install_sh="\${SHELL} $am_aux_dir/install-sh"
+ esac
+fi
+AC_SUBST(install_sh)])
+
+# Copyright (C) 2003, 2005 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# Check whether the underlying file-system supports filenames
+# with a leading dot. For instance MS-DOS doesn't.
+AC_DEFUN([AM_SET_LEADING_DOT],
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+mkdir .tst 2>/dev/null
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+ am__leading_dot=.
+else
+ am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+AC_SUBST([am__leading_dot])])
+
+# Add --enable-maintainer-mode option to configure. -*- Autoconf -*-
+# From Jim Meyering
+
+# Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 5
+
+# AM_MAINTAINER_MODE([DEFAULT-MODE])
+# ----------------------------------
+# Control maintainer-specific portions of Makefiles.
+# Default is to disable them, unless `enable' is passed literally.
+# For symmetry, `disable' may be passed as well. Anyway, the user
+# can override the default with the --enable/--disable switch.
+AC_DEFUN([AM_MAINTAINER_MODE],
+[m4_case(m4_default([$1], [disable]),
+ [enable], [m4_define([am_maintainer_other], [disable])],
+ [disable], [m4_define([am_maintainer_other], [enable])],
+ [m4_define([am_maintainer_other], [enable])
+ m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
+AC_MSG_CHECKING([whether to am_maintainer_other maintainer-specific portions of Makefiles])
+ dnl maintainer-mode's default is 'disable' unless 'enable' is passed
+ AC_ARG_ENABLE([maintainer-mode],
+[ --][am_maintainer_other][-maintainer-mode am_maintainer_other make rules and dependencies not useful
+ (and sometimes confusing) to the casual installer],
+ [USE_MAINTAINER_MODE=$enableval],
+ [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
+ AC_MSG_RESULT([$USE_MAINTAINER_MODE])
+ AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
+ MAINT=$MAINTAINER_MODE_TRUE
+ AC_SUBST([MAINT])dnl
+]
+)
+
+AU_DEFUN([jm_MAINTAINER_MODE], [AM_MAINTAINER_MODE])
+
+# Check to see how 'make' treats includes. -*- Autoconf -*-
+
+# Copyright (C) 2001, 2002, 2003, 2005, 2009 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 4
+
+# AM_MAKE_INCLUDE()
+# -----------------
+# Check to see how make treats includes.
+AC_DEFUN([AM_MAKE_INCLUDE],
+[am_make=${MAKE-make}
+cat > confinc << 'END'
+am__doit:
+ @echo this is the am__doit target
+.PHONY: am__doit
+END
+# If we don't find an include directive, just comment out the code.
+AC_MSG_CHECKING([for style of include used by $am_make])
+am__include="#"
+am__quote=
+_am_result=none
+# First try GNU make style include.
+echo "include confinc" > confmf
+# Ignore all kinds of additional output from `make'.
+case `$am_make -s -f confmf 2> /dev/null` in #(
+*the\ am__doit\ target*)
+ am__include=include
+ am__quote=
+ _am_result=GNU
+ ;;
+esac
+# Now try BSD make style include.
+if test "$am__include" = "#"; then
+ echo '.include "confinc"' > confmf
+ case `$am_make -s -f confmf 2> /dev/null` in #(
+ *the\ am__doit\ target*)
+ am__include=.include
+ am__quote="\""
+ _am_result=BSD
+ ;;
+ esac
+fi
+AC_SUBST([am__include])
+AC_SUBST([am__quote])
+AC_MSG_RESULT([$_am_result])
+rm -f confinc confmf
+])
+
+# Fake the existence of programs that GNU maintainers use. -*- Autoconf -*-
+
+# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 6
+
+# AM_MISSING_PROG(NAME, PROGRAM)
+# ------------------------------
+AC_DEFUN([AM_MISSING_PROG],
+[AC_REQUIRE([AM_MISSING_HAS_RUN])
+$1=${$1-"${am_missing_run}$2"}
+AC_SUBST($1)])
+
+
+# AM_MISSING_HAS_RUN
+# ------------------
+# Define MISSING if not defined so far and test if it supports --run.
+# If it does, set am_missing_run to use it, otherwise, to nothing.
+AC_DEFUN([AM_MISSING_HAS_RUN],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+AC_REQUIRE_AUX_FILE([missing])dnl
+if test x"${MISSING+set}" != xset; then
+ case $am_aux_dir in
+ *\ * | *\ *)
+ MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
+ *)
+ MISSING="\${SHELL} $am_aux_dir/missing" ;;
+ esac
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --run true"; then
+ am_missing_run="$MISSING --run "
+else
+ am_missing_run=
+ AC_MSG_WARN([`missing' script is too old or missing])
+fi
+])
+
+# Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_MKDIR_P
+# ---------------
+# Check for `mkdir -p'.
+AC_DEFUN([AM_PROG_MKDIR_P],
+[AC_PREREQ([2.60])dnl
+AC_REQUIRE([AC_PROG_MKDIR_P])dnl
+dnl Automake 1.8 to 1.9.6 used to define mkdir_p. We now use MKDIR_P,
+dnl while keeping a definition of mkdir_p for backward compatibility.
+dnl @MKDIR_P@ is magic: AC_OUTPUT adjusts its value for each Makefile.
+dnl However we cannot define mkdir_p as $(MKDIR_P) for the sake of
+dnl Makefile.ins that do not define MKDIR_P, so we do our own
+dnl adjustment using top_builddir (which is defined more often than
+dnl MKDIR_P).
+AC_SUBST([mkdir_p], ["$MKDIR_P"])dnl
+case $mkdir_p in
+ [[\\/$]]* | ?:[[\\/]]*) ;;
+ */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
+esac
+])
+
+# Helper functions for option handling. -*- Autoconf -*-
+
+# Copyright (C) 2001, 2002, 2003, 2005, 2008 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 4
+
+# _AM_MANGLE_OPTION(NAME)
+# -----------------------
+AC_DEFUN([_AM_MANGLE_OPTION],
+[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
+
+# _AM_SET_OPTION(NAME)
+# ------------------------------
+# Set option NAME. Presently that only means defining a flag for this option.
+AC_DEFUN([_AM_SET_OPTION],
+[m4_define(_AM_MANGLE_OPTION([$1]), 1)])
+
+# _AM_SET_OPTIONS(OPTIONS)
+# ----------------------------------
+# OPTIONS is a space-separated list of Automake options.
+AC_DEFUN([_AM_SET_OPTIONS],
+[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
+
+# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
+# -------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+AC_DEFUN([_AM_IF_OPTION],
+[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
+
+# Check to make sure that the build environment is sane. -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 5
+
+# AM_SANITY_CHECK
+# ---------------
+AC_DEFUN([AM_SANITY_CHECK],
+[AC_MSG_CHECKING([whether build environment is sane])
+# Just in case
+sleep 1
+echo timestamp > conftest.file
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name. Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+ *[[\\\"\#\$\&\'\`$am_lf]]*)
+ AC_MSG_ERROR([unsafe absolute working directory name]);;
+esac
+case $srcdir in
+ *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
+ AC_MSG_ERROR([unsafe srcdir value: `$srcdir']);;
+esac
+
+# Do `set' in a subshell so we don't clobber the current shell's
+# arguments. Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+ set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+ if test "$[*]" = "X"; then
+ # -L didn't work.
+ set X `ls -t "$srcdir/configure" conftest.file`
+ fi
+ rm -f conftest.file
+ if test "$[*]" != "X $srcdir/configure conftest.file" \
+ && test "$[*]" != "X conftest.file $srcdir/configure"; then
+
+ # If neither matched, then we have a broken ls. This can happen
+ # if, for instance, CONFIG_SHELL is bash and it inherits a
+ # broken ls alias from the environment. This has actually
+ # happened. Such a system could not be considered "sane".
+ AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
+alias in your environment])
+ fi
+
+ test "$[2]" = conftest.file
+ )
+then
+ # Ok.
+ :
+else
+ AC_MSG_ERROR([newly created file is older than distributed files!
+Check your system clock])
+fi
+AC_MSG_RESULT(yes)])
+
+# Copyright (C) 2001, 2003, 2005 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_STRIP
+# ---------------------
+# One issue with vendor `install' (even GNU) is that you can't
+# specify the program used to strip binaries. This is especially
+# annoying in cross-compiling environments, where the build's strip
+# is unlikely to handle the host's binaries.
+# Fortunately install-sh will honor a STRIPPROG variable, so we
+# always use install-sh in `make install-strip', and initialize
+# STRIPPROG with the value of the STRIP variable (set by the user).
+AC_DEFUN([AM_PROG_INSTALL_STRIP],
+[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+# Installed binaries are usually stripped using `strip' when the user
+# run `make install-strip'. However `strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the `STRIP' environment variable to overrule this program.
+dnl Don't test for $cross_compiling = yes, because it might be `maybe'.
+if test "$cross_compiling" != no; then
+ AC_CHECK_TOOL([STRIP], [strip], :)
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+AC_SUBST([INSTALL_STRIP_PROGRAM])])
+
+# Copyright (C) 2006, 2008 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# _AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
+# This macro is traced by Automake.
+AC_DEFUN([_AM_SUBST_NOTMAKE])
+
+# AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Public sister of _AM_SUBST_NOTMAKE.
+AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
+
+# Check how to create a tarball. -*- Autoconf -*-
+
+# Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# _AM_PROG_TAR(FORMAT)
+# --------------------
+# Check how to create a tarball in format FORMAT.
+# FORMAT should be one of `v7', `ustar', or `pax'.
+#
+# Substitute a variable $(am__tar) that is a command
+# writing to stdout a FORMAT-tarball containing the directory
+# $tardir.
+# tardir=directory && $(am__tar) > result.tar
+#
+# Substitute a variable $(am__untar) that extract such
+# a tarball read from stdin.
+# $(am__untar) < result.tar
+AC_DEFUN([_AM_PROG_TAR],
+[# Always define AMTAR for backward compatibility.
+AM_MISSING_PROG([AMTAR], [tar])
+m4_if([$1], [v7],
+ [am__tar='${AMTAR} chof - "$$tardir"'; am__untar='${AMTAR} xf -'],
+ [m4_case([$1], [ustar],, [pax],,
+ [m4_fatal([Unknown tar format])])
+AC_MSG_CHECKING([how to create a $1 tar archive])
+# Loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
+_am_tools=${am_cv_prog_tar_$1-$_am_tools}
+# Do not fold the above two line into one, because Tru64 sh and
+# Solaris sh will not grok spaces in the rhs of `-'.
+for _am_tool in $_am_tools
+do
+ case $_am_tool in
+ gnutar)
+ for _am_tar in tar gnutar gtar;
+ do
+ AM_RUN_LOG([$_am_tar --version]) && break
+ done
+ am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
+ am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
+ am__untar="$_am_tar -xf -"
+ ;;
+ plaintar)
+ # Must skip GNU tar: if it does not support --format= it doesn't create
+ # ustar tarball either.
+ (tar --version) >/dev/null 2>&1 && continue
+ am__tar='tar chf - "$$tardir"'
+ am__tar_='tar chf - "$tardir"'
+ am__untar='tar xf -'
+ ;;
+ pax)
+ am__tar='pax -L -x $1 -w "$$tardir"'
+ am__tar_='pax -L -x $1 -w "$tardir"'
+ am__untar='pax -r'
+ ;;
+ cpio)
+ am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
+ am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
+ am__untar='cpio -i -H $1 -d'
+ ;;
+ none)
+ am__tar=false
+ am__tar_=false
+ am__untar=false
+ ;;
+ esac
+
+ # If the value was cached, stop now. We just wanted to have am__tar
+ # and am__untar set.
+ test -n "${am_cv_prog_tar_$1}" && break
+
+ # tar/untar a dummy directory, and stop if the command works
+ rm -rf conftest.dir
+ mkdir conftest.dir
+ echo GrepMe > conftest.dir/file
+ AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
+ rm -rf conftest.dir
+ if test -s conftest.tar; then
+ AM_RUN_LOG([$am__untar <conftest.tar])
+ grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
+ fi
+done
+rm -rf conftest.dir
+
+AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
+AC_MSG_RESULT([$am_cv_prog_tar_$1])])
+AC_SUBST([am__tar])
+AC_SUBST([am__untar])
+]) # _AM_PROG_TAR
+
--- /dev/null
+#!/bin/sh
+
+libtoolize --force
+automake --add-missing --force-missing
+autoreconf
+
--- /dev/null
+#! /bin/sh
+# Attempt to guess a canonical system name.
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+# Free Software Foundation, Inc.
+
+timestamp='2008-01-23'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+# 02110-1301, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+
+# Originally written by Per Bothner <per@bothner.com>.
+# Please send patches to <config-patches@gnu.org>. Submit a context
+# diff and a properly formatted ChangeLog entry.
+#
+# This script attempts to guess a canonical system name similar to
+# config.sub. If it succeeds, it prints the system name on stdout, and
+# exits with 0. Otherwise, it exits with 1.
+#
+# The plan is that this can be called by configure scripts if you
+# don't specify an explicit build system type.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION]
+
+Output the configuration name of the system \`$me' is run on.
+
+Operation modes:
+ -h, --help print this help, then exit
+ -t, --time-stamp print date of last modification, then exit
+ -v, --version print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.guess ($timestamp)
+
+Originally written by Per Bothner.
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions. There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+ case $1 in
+ --time-stamp | --time* | -t )
+ echo "$timestamp" ; exit ;;
+ --version | -v )
+ echo "$version" ; exit ;;
+ --help | --h* | -h )
+ echo "$usage"; exit ;;
+ -- ) # Stop option processing
+ shift; break ;;
+ - ) # Use stdin as input.
+ break ;;
+ -* )
+ echo "$me: invalid option $1$help" >&2
+ exit 1 ;;
+ * )
+ break ;;
+ esac
+done
+
+if test $# != 0; then
+ echo "$me: too many arguments$help" >&2
+ exit 1
+fi
+
+trap 'exit 1' 1 2 15
+
+# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
+# compiler to aid in system detection is discouraged as it requires
+# temporary files to be created and, as you can see below, it is a
+# headache to deal with in a portable fashion.
+
+# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
+# use `HOST_CC' if defined, but it is deprecated.
+
+# Portable tmp directory creation inspired by the Autoconf team.
+
+set_cc_for_build='
+trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ;
+trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ;
+: ${TMPDIR=/tmp} ;
+ { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
+ { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } ||
+ { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+ { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ;
+dummy=$tmp/dummy ;
+tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ;
+case $CC_FOR_BUILD,$HOST_CC,$CC in
+ ,,) echo "int x;" > $dummy.c ;
+ for c in cc gcc c89 c99 ; do
+ if ($c -c -o $dummy.o $dummy.c) >/dev/null 2>&1 ; then
+ CC_FOR_BUILD="$c"; break ;
+ fi ;
+ done ;
+ if test x"$CC_FOR_BUILD" = x ; then
+ CC_FOR_BUILD=no_compiler_found ;
+ fi
+ ;;
+ ,,*) CC_FOR_BUILD=$CC ;;
+ ,*,*) CC_FOR_BUILD=$HOST_CC ;;
+esac ; set_cc_for_build= ;'
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 1994-08-24)
+if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
+ PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
+UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
+UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown
+UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
+
+# Note: order is significant - the case branches are not exclusive.
+
+case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
+ *:NetBSD:*:*)
+ # NetBSD (nbsd) targets should (where applicable) match one or
+ # more of the tupples: *-*-netbsdelf*, *-*-netbsdaout*,
+ # *-*-netbsdecoff* and *-*-netbsd*. For targets that recently
+ # switched to ELF, *-*-netbsd* would select the old
+ # object file format. This provides both forward
+ # compatibility and a consistent mechanism for selecting the
+ # object file format.
+ #
+ # Note: NetBSD doesn't particularly care about the vendor
+ # portion of the name. We always set it to "unknown".
+ sysctl="sysctl -n hw.machine_arch"
+ UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \
+ /usr/sbin/$sysctl 2>/dev/null || echo unknown)`
+ case "${UNAME_MACHINE_ARCH}" in
+ armeb) machine=armeb-unknown ;;
+ arm*) machine=arm-unknown ;;
+ sh3el) machine=shl-unknown ;;
+ sh3eb) machine=sh-unknown ;;
+ sh5el) machine=sh5le-unknown ;;
+ *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
+ esac
+ # The Operating System including object format, if it has switched
+ # to ELF recently, or will in the future.
+ case "${UNAME_MACHINE_ARCH}" in
+ arm*|i386|m68k|ns32k|sh3*|sparc|vax)
+ eval $set_cc_for_build
+ if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
+ | grep __ELF__ >/dev/null
+ then
+ # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
+ # Return netbsd for either. FIX?
+ os=netbsd
+ else
+ os=netbsdelf
+ fi
+ ;;
+ *)
+ os=netbsd
+ ;;
+ esac
+ # The OS release
+ # Debian GNU/NetBSD machines have a different userland, and
+ # thus, need a distinct triplet. However, they do not need
+ # kernel version information, so it can be replaced with a
+ # suitable tag, in the style of linux-gnu.
+ case "${UNAME_VERSION}" in
+ Debian*)
+ release='-gnu'
+ ;;
+ *)
+ release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
+ ;;
+ esac
+ # Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
+ # contains redundant information, the shorter form:
+ # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
+ echo "${machine}-${os}${release}"
+ exit ;;
+ *:OpenBSD:*:*)
+ UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
+ echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
+ exit ;;
+ *:ekkoBSD:*:*)
+ echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
+ exit ;;
+ *:SolidBSD:*:*)
+ echo ${UNAME_MACHINE}-unknown-solidbsd${UNAME_RELEASE}
+ exit ;;
+ macppc:MirBSD:*:*)
+ echo powerpc-unknown-mirbsd${UNAME_RELEASE}
+ exit ;;
+ *:MirBSD:*:*)
+ echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
+ exit ;;
+ alpha:OSF1:*:*)
+ case $UNAME_RELEASE in
+ *4.0)
+ UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+ ;;
+ *5.*)
+ UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+ ;;
+ esac
+ # According to Compaq, /usr/sbin/psrinfo has been available on
+ # OSF/1 and Tru64 systems produced since 1995. I hope that
+ # covers most systems running today. This code pipes the CPU
+ # types through head -n 1, so we only detect the type of CPU 0.
+ ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^ The alpha \(.*\) processor.*$/\1/p' | head -n 1`
+ case "$ALPHA_CPU_TYPE" in
+ "EV4 (21064)")
+ UNAME_MACHINE="alpha" ;;
+ "EV4.5 (21064)")
+ UNAME_MACHINE="alpha" ;;
+ "LCA4 (21066/21068)")
+ UNAME_MACHINE="alpha" ;;
+ "EV5 (21164)")
+ UNAME_MACHINE="alphaev5" ;;
+ "EV5.6 (21164A)")
+ UNAME_MACHINE="alphaev56" ;;
+ "EV5.6 (21164PC)")
+ UNAME_MACHINE="alphapca56" ;;
+ "EV5.7 (21164PC)")
+ UNAME_MACHINE="alphapca57" ;;
+ "EV6 (21264)")
+ UNAME_MACHINE="alphaev6" ;;
+ "EV6.7 (21264A)")
+ UNAME_MACHINE="alphaev67" ;;
+ "EV6.8CB (21264C)")
+ UNAME_MACHINE="alphaev68" ;;
+ "EV6.8AL (21264B)")
+ UNAME_MACHINE="alphaev68" ;;
+ "EV6.8CX (21264D)")
+ UNAME_MACHINE="alphaev68" ;;
+ "EV6.9A (21264/EV69A)")
+ UNAME_MACHINE="alphaev69" ;;
+ "EV7 (21364)")
+ UNAME_MACHINE="alphaev7" ;;
+ "EV7.9 (21364A)")
+ UNAME_MACHINE="alphaev79" ;;
+ esac
+ # A Pn.n version is a patched version.
+ # A Vn.n version is a released version.
+ # A Tn.n version is a released field test version.
+ # A Xn.n version is an unreleased experimental baselevel.
+ # 1.2 uses "1.2" for uname -r.
+ echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+ exit ;;
+ Alpha\ *:Windows_NT*:*)
+ # How do we know it's Interix rather than the generic POSIX subsystem?
+ # Should we change UNAME_MACHINE based on the output of uname instead
+ # of the specific Alpha model?
+ echo alpha-pc-interix
+ exit ;;
+ 21064:Windows_NT:50:3)
+ echo alpha-dec-winnt3.5
+ exit ;;
+ Amiga*:UNIX_System_V:4.0:*)
+ echo m68k-unknown-sysv4
+ exit ;;
+ *:[Aa]miga[Oo][Ss]:*:*)
+ echo ${UNAME_MACHINE}-unknown-amigaos
+ exit ;;
+ *:[Mm]orph[Oo][Ss]:*:*)
+ echo ${UNAME_MACHINE}-unknown-morphos
+ exit ;;
+ *:OS/390:*:*)
+ echo i370-ibm-openedition
+ exit ;;
+ *:z/VM:*:*)
+ echo s390-ibm-zvmoe
+ exit ;;
+ *:OS400:*:*)
+ echo powerpc-ibm-os400
+ exit ;;
+ arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+ echo arm-acorn-riscix${UNAME_RELEASE}
+ exit ;;
+ arm:riscos:*:*|arm:RISCOS:*:*)
+ echo arm-unknown-riscos
+ exit ;;
+ SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
+ echo hppa1.1-hitachi-hiuxmpp
+ exit ;;
+ Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
+ # akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
+ if test "`(/bin/universe) 2>/dev/null`" = att ; then
+ echo pyramid-pyramid-sysv3
+ else
+ echo pyramid-pyramid-bsd
+ fi
+ exit ;;
+ NILE*:*:*:dcosx)
+ echo pyramid-pyramid-svr4
+ exit ;;
+ DRS?6000:unix:4.0:6*)
+ echo sparc-icl-nx6
+ exit ;;
+ DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
+ case `/usr/bin/uname -p` in
+ sparc) echo sparc-icl-nx7; exit ;;
+ esac ;;
+ sun4H:SunOS:5.*:*)
+ echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+ exit ;;
+ sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+ echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+ exit ;;
+ i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
+ echo i386-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+ exit ;;
+ sun4*:SunOS:6*:*)
+ # According to config.sub, this is the proper way to canonicalize
+ # SunOS6. Hard to guess exactly what SunOS6 will be like, but
+ # it's likely to be more like Solaris than SunOS4.
+ echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+ exit ;;
+ sun4*:SunOS:*:*)
+ case "`/usr/bin/arch -k`" in
+ Series*|S4*)
+ UNAME_RELEASE=`uname -v`
+ ;;
+ esac
+ # Japanese Language versions have a version number like `4.1.3-JL'.
+ echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'`
+ exit ;;
+ sun3*:SunOS:*:*)
+ echo m68k-sun-sunos${UNAME_RELEASE}
+ exit ;;
+ sun*:*:4.2BSD:*)
+ UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
+ test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3
+ case "`/bin/arch`" in
+ sun3)
+ echo m68k-sun-sunos${UNAME_RELEASE}
+ ;;
+ sun4)
+ echo sparc-sun-sunos${UNAME_RELEASE}
+ ;;
+ esac
+ exit ;;
+ aushp:SunOS:*:*)
+ echo sparc-auspex-sunos${UNAME_RELEASE}
+ exit ;;
+ # The situation for MiNT is a little confusing. The machine name
+ # can be virtually everything (everything which is not
+ # "atarist" or "atariste" at least should have a processor
+ # > m68000). The system name ranges from "MiNT" over "FreeMiNT"
+ # to the lowercase version "mint" (or "freemint"). Finally
+ # the system name "TOS" denotes a system which is actually not
+ # MiNT. But MiNT is downward compatible to TOS, so this should
+ # be no problem.
+ atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
+ echo m68k-atari-mint${UNAME_RELEASE}
+ exit ;;
+ atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
+ echo m68k-atari-mint${UNAME_RELEASE}
+ exit ;;
+ *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
+ echo m68k-atari-mint${UNAME_RELEASE}
+ exit ;;
+ milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
+ echo m68k-milan-mint${UNAME_RELEASE}
+ exit ;;
+ hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
+ echo m68k-hades-mint${UNAME_RELEASE}
+ exit ;;
+ *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
+ echo m68k-unknown-mint${UNAME_RELEASE}
+ exit ;;
+ m68k:machten:*:*)
+ echo m68k-apple-machten${UNAME_RELEASE}
+ exit ;;
+ powerpc:machten:*:*)
+ echo powerpc-apple-machten${UNAME_RELEASE}
+ exit ;;
+ RISC*:Mach:*:*)
+ echo mips-dec-mach_bsd4.3
+ exit ;;
+ RISC*:ULTRIX:*:*)
+ echo mips-dec-ultrix${UNAME_RELEASE}
+ exit ;;
+ VAX*:ULTRIX*:*:*)
+ echo vax-dec-ultrix${UNAME_RELEASE}
+ exit ;;
+ 2020:CLIX:*:* | 2430:CLIX:*:*)
+ echo clipper-intergraph-clix${UNAME_RELEASE}
+ exit ;;
+ mips:*:*:UMIPS | mips:*:*:RISCos)
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+#ifdef __cplusplus
+#include <stdio.h> /* for printf() prototype */
+ int main (int argc, char *argv[]) {
+#else
+ int main (argc, argv) int argc; char *argv[]; {
+#endif
+ #if defined (host_mips) && defined (MIPSEB)
+ #if defined (SYSTYPE_SYSV)
+ printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0);
+ #endif
+ #if defined (SYSTYPE_SVR4)
+ printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0);
+ #endif
+ #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
+ printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0);
+ #endif
+ #endif
+ exit (-1);
+ }
+EOF
+ $CC_FOR_BUILD -o $dummy $dummy.c &&
+ dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` &&
+ SYSTEM_NAME=`$dummy $dummyarg` &&
+ { echo "$SYSTEM_NAME"; exit; }
+ echo mips-mips-riscos${UNAME_RELEASE}
+ exit ;;
+ Motorola:PowerMAX_OS:*:*)
+ echo powerpc-motorola-powermax
+ exit ;;
+ Motorola:*:4.3:PL8-*)
+ echo powerpc-harris-powermax
+ exit ;;
+ Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
+ echo powerpc-harris-powermax
+ exit ;;
+ Night_Hawk:Power_UNIX:*:*)
+ echo powerpc-harris-powerunix
+ exit ;;
+ m88k:CX/UX:7*:*)
+ echo m88k-harris-cxux7
+ exit ;;
+ m88k:*:4*:R4*)
+ echo m88k-motorola-sysv4
+ exit ;;
+ m88k:*:3*:R3*)
+ echo m88k-motorola-sysv3
+ exit ;;
+ AViiON:dgux:*:*)
+ # DG/UX returns AViiON for all architectures
+ UNAME_PROCESSOR=`/usr/bin/uname -p`
+ if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
+ then
+ if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
+ [ ${TARGET_BINARY_INTERFACE}x = x ]
+ then
+ echo m88k-dg-dgux${UNAME_RELEASE}
+ else
+ echo m88k-dg-dguxbcs${UNAME_RELEASE}
+ fi
+ else
+ echo i586-dg-dgux${UNAME_RELEASE}
+ fi
+ exit ;;
+ M88*:DolphinOS:*:*) # DolphinOS (SVR3)
+ echo m88k-dolphin-sysv3
+ exit ;;
+ M88*:*:R3*:*)
+ # Delta 88k system running SVR3
+ echo m88k-motorola-sysv3
+ exit ;;
+ XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+ echo m88k-tektronix-sysv3
+ exit ;;
+ Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+ echo m68k-tektronix-bsd
+ exit ;;
+ *:IRIX*:*:*)
+ echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'`
+ exit ;;
+ ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
+ echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id
+ exit ;; # Note that: echo "'`uname -s`'" gives 'AIX '
+ i*86:AIX:*:*)
+ echo i386-ibm-aix
+ exit ;;
+ ia64:AIX:*:*)
+ if [ -x /usr/bin/oslevel ] ; then
+ IBM_REV=`/usr/bin/oslevel`
+ else
+ IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+ fi
+ echo ${UNAME_MACHINE}-ibm-aix${IBM_REV}
+ exit ;;
+ *:AIX:2:3)
+ if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+ #include <sys/systemcfg.h>
+
+ main()
+ {
+ if (!__power_pc())
+ exit(1);
+ puts("powerpc-ibm-aix3.2.5");
+ exit(0);
+ }
+EOF
+ if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy`
+ then
+ echo "$SYSTEM_NAME"
+ else
+ echo rs6000-ibm-aix3.2.5
+ fi
+ elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+ echo rs6000-ibm-aix3.2.4
+ else
+ echo rs6000-ibm-aix3.2
+ fi
+ exit ;;
+ *:AIX:*:[456])
+ IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
+ if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
+ IBM_ARCH=rs6000
+ else
+ IBM_ARCH=powerpc
+ fi
+ if [ -x /usr/bin/oslevel ] ; then
+ IBM_REV=`/usr/bin/oslevel`
+ else
+ IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+ fi
+ echo ${IBM_ARCH}-ibm-aix${IBM_REV}
+ exit ;;
+ *:AIX:*:*)
+ echo rs6000-ibm-aix
+ exit ;;
+ ibmrt:4.4BSD:*|romp-ibm:BSD:*)
+ echo romp-ibm-bsd4.4
+ exit ;;
+ ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and
+ echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to
+ exit ;; # report: romp-ibm BSD 4.3
+ *:BOSX:*:*)
+ echo rs6000-bull-bosx
+ exit ;;
+ DPX/2?00:B.O.S.:*:*)
+ echo m68k-bull-sysv3
+ exit ;;
+ 9000/[34]??:4.3bsd:1.*:*)
+ echo m68k-hp-bsd
+ exit ;;
+ hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+ echo m68k-hp-bsd4.4
+ exit ;;
+ 9000/[34678]??:HP-UX:*:*)
+ HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+ case "${UNAME_MACHINE}" in
+ 9000/31? ) HP_ARCH=m68000 ;;
+ 9000/[34]?? ) HP_ARCH=m68k ;;
+ 9000/[678][0-9][0-9])
+ if [ -x /usr/bin/getconf ]; then
+ sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
+ sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+ case "${sc_cpu_version}" in
+ 523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
+ 528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
+ 532) # CPU_PA_RISC2_0
+ case "${sc_kernel_bits}" in
+ 32) HP_ARCH="hppa2.0n" ;;
+ 64) HP_ARCH="hppa2.0w" ;;
+ '') HP_ARCH="hppa2.0" ;; # HP-UX 10.20
+ esac ;;
+ esac
+ fi
+ if [ "${HP_ARCH}" = "" ]; then
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+
+ #define _HPUX_SOURCE
+ #include <stdlib.h>
+ #include <unistd.h>
+
+ int main ()
+ {
+ #if defined(_SC_KERNEL_BITS)
+ long bits = sysconf(_SC_KERNEL_BITS);
+ #endif
+ long cpu = sysconf (_SC_CPU_VERSION);
+
+ switch (cpu)
+ {
+ case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+ case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+ case CPU_PA_RISC2_0:
+ #if defined(_SC_KERNEL_BITS)
+ switch (bits)
+ {
+ case 64: puts ("hppa2.0w"); break;
+ case 32: puts ("hppa2.0n"); break;
+ default: puts ("hppa2.0"); break;
+ } break;
+ #else /* !defined(_SC_KERNEL_BITS) */
+ puts ("hppa2.0"); break;
+ #endif
+ default: puts ("hppa1.0"); break;
+ }
+ exit (0);
+ }
+EOF
+ (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
+ test -z "$HP_ARCH" && HP_ARCH=hppa
+ fi ;;
+ esac
+ if [ ${HP_ARCH} = "hppa2.0w" ]
+ then
+ eval $set_cc_for_build
+
+ # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
+ # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler
+ # generating 64-bit code. GNU and HP use different nomenclature:
+ #
+ # $ CC_FOR_BUILD=cc ./config.guess
+ # => hppa2.0w-hp-hpux11.23
+ # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
+ # => hppa64-hp-hpux11.23
+
+ if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) |
+ grep __LP64__ >/dev/null
+ then
+ HP_ARCH="hppa2.0w"
+ else
+ HP_ARCH="hppa64"
+ fi
+ fi
+ echo ${HP_ARCH}-hp-hpux${HPUX_REV}
+ exit ;;
+ ia64:HP-UX:*:*)
+ HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+ echo ia64-hp-hpux${HPUX_REV}
+ exit ;;
+ 3050*:HI-UX:*:*)
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+ #include <unistd.h>
+ int
+ main ()
+ {
+ long cpu = sysconf (_SC_CPU_VERSION);
+ /* The order matters, because CPU_IS_HP_MC68K erroneously returns
+ true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct
+ results, however. */
+ if (CPU_IS_PA_RISC (cpu))
+ {
+ switch (cpu)
+ {
+ case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
+ case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
+ case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
+ default: puts ("hppa-hitachi-hiuxwe2"); break;
+ }
+ }
+ else if (CPU_IS_HP_MC68K (cpu))
+ puts ("m68k-hitachi-hiuxwe2");
+ else puts ("unknown-hitachi-hiuxwe2");
+ exit (0);
+ }
+EOF
+ $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` &&
+ { echo "$SYSTEM_NAME"; exit; }
+ echo unknown-hitachi-hiuxwe2
+ exit ;;
+ 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
+ echo hppa1.1-hp-bsd
+ exit ;;
+ 9000/8??:4.3bsd:*:*)
+ echo hppa1.0-hp-bsd
+ exit ;;
+ *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
+ echo hppa1.0-hp-mpeix
+ exit ;;
+ hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
+ echo hppa1.1-hp-osf
+ exit ;;
+ hp8??:OSF1:*:*)
+ echo hppa1.0-hp-osf
+ exit ;;
+ i*86:OSF1:*:*)
+ if [ -x /usr/sbin/sysversion ] ; then
+ echo ${UNAME_MACHINE}-unknown-osf1mk
+ else
+ echo ${UNAME_MACHINE}-unknown-osf1
+ fi
+ exit ;;
+ parisc*:Lites*:*:*)
+ echo hppa1.1-hp-lites
+ exit ;;
+ C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+ echo c1-convex-bsd
+ exit ;;
+ C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+ if getsysinfo -f scalar_acc
+ then echo c32-convex-bsd
+ else echo c2-convex-bsd
+ fi
+ exit ;;
+ C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+ echo c34-convex-bsd
+ exit ;;
+ C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+ echo c38-convex-bsd
+ exit ;;
+ C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+ echo c4-convex-bsd
+ exit ;;
+ CRAY*Y-MP:*:*:*)
+ echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+ exit ;;
+ CRAY*[A-Z]90:*:*:*)
+ echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \
+ | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+ -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
+ -e 's/\.[^.]*$/.X/'
+ exit ;;
+ CRAY*TS:*:*:*)
+ echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+ exit ;;
+ CRAY*T3E:*:*:*)
+ echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+ exit ;;
+ CRAY*SV1:*:*:*)
+ echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+ exit ;;
+ *:UNICOS/mp:*:*)
+ echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+ exit ;;
+ F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
+ FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+ FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+ FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
+ echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+ exit ;;
+ 5000:UNIX_System_V:4.*:*)
+ FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+ FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
+ echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+ exit ;;
+ i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
+ echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
+ exit ;;
+ sparc*:BSD/OS:*:*)
+ echo sparc-unknown-bsdi${UNAME_RELEASE}
+ exit ;;
+ *:BSD/OS:*:*)
+ echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
+ exit ;;
+ *:FreeBSD:*:*)
+ case ${UNAME_MACHINE} in
+ pc98)
+ echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+ amd64)
+ echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+ *)
+ echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+ esac
+ exit ;;
+ i*:CYGWIN*:*)
+ echo ${UNAME_MACHINE}-pc-cygwin
+ exit ;;
+ *:MINGW*:*)
+ echo ${UNAME_MACHINE}-pc-mingw32
+ exit ;;
+ i*:windows32*:*)
+ # uname -m includes "-pc" on this system.
+ echo ${UNAME_MACHINE}-mingw32
+ exit ;;
+ i*:PW*:*)
+ echo ${UNAME_MACHINE}-pc-pw32
+ exit ;;
+ *:Interix*:[3456]*)
+ case ${UNAME_MACHINE} in
+ x86)
+ echo i586-pc-interix${UNAME_RELEASE}
+ exit ;;
+ EM64T | authenticamd)
+ echo x86_64-unknown-interix${UNAME_RELEASE}
+ exit ;;
+ IA64)
+ echo ia64-unknown-interix${UNAME_RELEASE}
+ exit ;;
+ esac ;;
+ [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
+ echo i${UNAME_MACHINE}-pc-mks
+ exit ;;
+ i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
+ # How do we know it's Interix rather than the generic POSIX subsystem?
+ # It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
+ # UNAME_MACHINE based on the output of uname instead of i386?
+ echo i586-pc-interix
+ exit ;;
+ i*:UWIN*:*)
+ echo ${UNAME_MACHINE}-pc-uwin
+ exit ;;
+ amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
+ echo x86_64-unknown-cygwin
+ exit ;;
+ p*:CYGWIN*:*)
+ echo powerpcle-unknown-cygwin
+ exit ;;
+ prep*:SunOS:5.*:*)
+ echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+ exit ;;
+ *:GNU:*:*)
+ # the GNU system
+ echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
+ exit ;;
+ *:GNU/*:*:*)
+ # other systems with GNU libc and userland
+ echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu
+ exit ;;
+ i*86:Minix:*:*)
+ echo ${UNAME_MACHINE}-pc-minix
+ exit ;;
+ arm*:Linux:*:*)
+ eval $set_cc_for_build
+ if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
+ | grep -q __ARM_EABI__
+ then
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ else
+ echo ${UNAME_MACHINE}-unknown-linux-gnueabi
+ fi
+ exit ;;
+ avr32*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ cris:Linux:*:*)
+ echo cris-axis-linux-gnu
+ exit ;;
+ crisv32:Linux:*:*)
+ echo crisv32-axis-linux-gnu
+ exit ;;
+ frv:Linux:*:*)
+ echo frv-unknown-linux-gnu
+ exit ;;
+ ia64:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ m32r*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ m68*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ mips:Linux:*:*)
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+ #undef CPU
+ #undef mips
+ #undef mipsel
+ #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+ CPU=mipsel
+ #else
+ #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+ CPU=mips
+ #else
+ CPU=
+ #endif
+ #endif
+EOF
+ eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
+ /^CPU/{
+ s: ::g
+ p
+ }'`"
+ test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
+ ;;
+ mips64:Linux:*:*)
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+ #undef CPU
+ #undef mips64
+ #undef mips64el
+ #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+ CPU=mips64el
+ #else
+ #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+ CPU=mips64
+ #else
+ CPU=
+ #endif
+ #endif
+EOF
+ eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
+ /^CPU/{
+ s: ::g
+ p
+ }'`"
+ test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
+ ;;
+ or32:Linux:*:*)
+ echo or32-unknown-linux-gnu
+ exit ;;
+ ppc:Linux:*:*)
+ echo powerpc-unknown-linux-gnu
+ exit ;;
+ ppc64:Linux:*:*)
+ echo powerpc64-unknown-linux-gnu
+ exit ;;
+ alpha:Linux:*:*)
+ case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
+ EV5) UNAME_MACHINE=alphaev5 ;;
+ EV56) UNAME_MACHINE=alphaev56 ;;
+ PCA56) UNAME_MACHINE=alphapca56 ;;
+ PCA57) UNAME_MACHINE=alphapca56 ;;
+ EV6) UNAME_MACHINE=alphaev6 ;;
+ EV67) UNAME_MACHINE=alphaev67 ;;
+ EV68*) UNAME_MACHINE=alphaev68 ;;
+ esac
+ objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null
+ if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
+ echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
+ exit ;;
+ parisc:Linux:*:* | hppa:Linux:*:*)
+ # Look for CPU level
+ case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
+ PA7*) echo hppa1.1-unknown-linux-gnu ;;
+ PA8*) echo hppa2.0-unknown-linux-gnu ;;
+ *) echo hppa-unknown-linux-gnu ;;
+ esac
+ exit ;;
+ parisc64:Linux:*:* | hppa64:Linux:*:*)
+ echo hppa64-unknown-linux-gnu
+ exit ;;
+ s390:Linux:*:* | s390x:Linux:*:*)
+ echo ${UNAME_MACHINE}-ibm-linux
+ exit ;;
+ sh64*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ sh*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ sparc:Linux:*:* | sparc64:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ vax:Linux:*:*)
+ echo ${UNAME_MACHINE}-dec-linux-gnu
+ exit ;;
+ x86_64:Linux:*:*)
+ echo x86_64-unknown-linux-gnu
+ exit ;;
+ xtensa*:Linux:*:*)
+ echo ${UNAME_MACHINE}-unknown-linux-gnu
+ exit ;;
+ i*86:Linux:*:*)
+ # The BFD linker knows what the default object file format is, so
+ # first see if it will tell us. cd to the root directory to prevent
+ # problems with other programs or directories called `ld' in the path.
+ # Set LC_ALL=C to ensure ld outputs messages in English.
+ ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \
+ | sed -ne '/supported targets:/!d
+ s/[ ][ ]*/ /g
+ s/.*supported targets: *//
+ s/ .*//
+ p'`
+ case "$ld_supported_targets" in
+ elf32-i386)
+ TENTATIVE="${UNAME_MACHINE}-pc-linux-gnu"
+ ;;
+ a.out-i386-linux)
+ echo "${UNAME_MACHINE}-pc-linux-gnuaout"
+ exit ;;
+ coff-i386)
+ echo "${UNAME_MACHINE}-pc-linux-gnucoff"
+ exit ;;
+ "")
+ # Either a pre-BFD a.out linker (linux-gnuoldld) or
+ # one that does not give us useful --help.
+ echo "${UNAME_MACHINE}-pc-linux-gnuoldld"
+ exit ;;
+ esac
+ # Determine whether the default compiler is a.out or elf
+ eval $set_cc_for_build
+ sed 's/^ //' << EOF >$dummy.c
+ #include <features.h>
+ #ifdef __ELF__
+ # ifdef __GLIBC__
+ # if __GLIBC__ >= 2
+ LIBC=gnu
+ # else
+ LIBC=gnulibc1
+ # endif
+ # else
+ LIBC=gnulibc1
+ # endif
+ #else
+ #if defined(__INTEL_COMPILER) || defined(__PGI) || defined(__SUNPRO_C) || defined(__SUNPRO_CC)
+ LIBC=gnu
+ #else
+ LIBC=gnuaout
+ #endif
+ #endif
+ #ifdef __dietlibc__
+ LIBC=dietlibc
+ #endif
+EOF
+ eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
+ /^LIBC/{
+ s: ::g
+ p
+ }'`"
+ test x"${LIBC}" != x && {
+ echo "${UNAME_MACHINE}-pc-linux-${LIBC}"
+ exit
+ }
+ test x"${TENTATIVE}" != x && { echo "${TENTATIVE}"; exit; }
+ ;;
+ i*86:DYNIX/ptx:4*:*)
+ # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
+ # earlier versions are messed up and put the nodename in both
+ # sysname and nodename.
+ echo i386-sequent-sysv4
+ exit ;;
+ i*86:UNIX_SV:4.2MP:2.*)
+ # Unixware is an offshoot of SVR4, but it has its own version
+ # number series starting with 2...
+ # I am not positive that other SVR4 systems won't match this,
+ # I just have to hope. -- rms.
+ # Use sysv4.2uw... so that sysv4* matches it.
+ echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
+ exit ;;
+ i*86:OS/2:*:*)
+ # If we were able to find `uname', then EMX Unix compatibility
+ # is probably installed.
+ echo ${UNAME_MACHINE}-pc-os2-emx
+ exit ;;
+ i*86:XTS-300:*:STOP)
+ echo ${UNAME_MACHINE}-unknown-stop
+ exit ;;
+ i*86:atheos:*:*)
+ echo ${UNAME_MACHINE}-unknown-atheos
+ exit ;;
+ i*86:syllable:*:*)
+ echo ${UNAME_MACHINE}-pc-syllable
+ exit ;;
+ i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*)
+ echo i386-unknown-lynxos${UNAME_RELEASE}
+ exit ;;
+ i*86:*DOS:*:*)
+ echo ${UNAME_MACHINE}-pc-msdosdjgpp
+ exit ;;
+ i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*)
+ UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'`
+ if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+ echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL}
+ else
+ echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL}
+ fi
+ exit ;;
+ i*86:*:5:[678]*)
+ # UnixWare 7.x, OpenUNIX and OpenServer 6.
+ case `/bin/uname -X | grep "^Machine"` in
+ *486*) UNAME_MACHINE=i486 ;;
+ *Pentium) UNAME_MACHINE=i586 ;;
+ *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
+ esac
+ echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
+ exit ;;
+ i*86:*:3.2:*)
+ if test -f /usr/options/cb.name; then
+ UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
+ echo ${UNAME_MACHINE}-pc-isc$UNAME_REL
+ elif /bin/uname -X 2>/dev/null >/dev/null ; then
+ UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
+ (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
+ (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
+ && UNAME_MACHINE=i586
+ (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
+ && UNAME_MACHINE=i686
+ (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
+ && UNAME_MACHINE=i686
+ echo ${UNAME_MACHINE}-pc-sco$UNAME_REL
+ else
+ echo ${UNAME_MACHINE}-pc-sysv32
+ fi
+ exit ;;
+ pc:*:*:*)
+ # Left here for compatibility:
+ # uname -m prints for DJGPP always 'pc', but it prints nothing about
+ # the processor, so we play safe by assuming i386.
+ echo i386-pc-msdosdjgpp
+ exit ;;
+ Intel:Mach:3*:*)
+ echo i386-pc-mach3
+ exit ;;
+ paragon:*:*:*)
+ echo i860-intel-osf1
+ exit ;;
+ i860:*:4.*:*) # i860-SVR4
+ if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+ echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4
+ else # Add other i860-SVR4 vendors below as they are discovered.
+ echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4
+ fi
+ exit ;;
+ mini*:CTIX:SYS*5:*)
+ # "miniframe"
+ echo m68010-convergent-sysv
+ exit ;;
+ mc68k:UNIX:SYSTEM5:3.51m)
+ echo m68k-convergent-sysv
+ exit ;;
+ M680?0:D-NIX:5.3:*)
+ echo m68k-diab-dnix
+ exit ;;
+ M68*:*:R3V[5678]*:*)
+ test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
+ 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
+ OS_REL=''
+ test -r /etc/.relid \
+ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+ /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+ && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
+ /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
+ 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+ /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+ && { echo i486-ncr-sysv4; exit; } ;;
+ m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
+ echo m68k-unknown-lynxos${UNAME_RELEASE}
+ exit ;;
+ mc68030:UNIX_System_V:4.*:*)
+ echo m68k-atari-sysv4
+ exit ;;
+ TSUNAMI:LynxOS:2.*:*)
+ echo sparc-unknown-lynxos${UNAME_RELEASE}
+ exit ;;
+ rs6000:LynxOS:2.*:*)
+ echo rs6000-unknown-lynxos${UNAME_RELEASE}
+ exit ;;
+ PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*)
+ echo powerpc-unknown-lynxos${UNAME_RELEASE}
+ exit ;;
+ SM[BE]S:UNIX_SV:*:*)
+ echo mips-dde-sysv${UNAME_RELEASE}
+ exit ;;
+ RM*:ReliantUNIX-*:*:*)
+ echo mips-sni-sysv4
+ exit ;;
+ RM*:SINIX-*:*:*)
+ echo mips-sni-sysv4
+ exit ;;
+ *:SINIX-*:*:*)
+ if uname -p 2>/dev/null >/dev/null ; then
+ UNAME_MACHINE=`(uname -p) 2>/dev/null`
+ echo ${UNAME_MACHINE}-sni-sysv4
+ else
+ echo ns32k-sni-sysv
+ fi
+ exit ;;
+ PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+ # says <Richard.M.Bartel@ccMail.Census.GOV>
+ echo i586-unisys-sysv4
+ exit ;;
+ *:UNIX_System_V:4*:FTX*)
+ # From Gerald Hewes <hewes@openmarket.com>.
+ # How about differentiating between stratus architectures? -djm
+ echo hppa1.1-stratus-sysv4
+ exit ;;
+ *:*:*:FTX*)
+ # From seanf@swdc.stratus.com.
+ echo i860-stratus-sysv4
+ exit ;;
+ i*86:VOS:*:*)
+ # From Paul.Green@stratus.com.
+ echo ${UNAME_MACHINE}-stratus-vos
+ exit ;;
+ *:VOS:*:*)
+ # From Paul.Green@stratus.com.
+ echo hppa1.1-stratus-vos
+ exit ;;
+ mc68*:A/UX:*:*)
+ echo m68k-apple-aux${UNAME_RELEASE}
+ exit ;;
+ news*:NEWS-OS:6*:*)
+ echo mips-sony-newsos6
+ exit ;;
+ R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
+ if [ -d /usr/nec ]; then
+ echo mips-nec-sysv${UNAME_RELEASE}
+ else
+ echo mips-unknown-sysv${UNAME_RELEASE}
+ fi
+ exit ;;
+ BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only.
+ echo powerpc-be-beos
+ exit ;;
+ BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only.
+ echo powerpc-apple-beos
+ exit ;;
+ BePC:BeOS:*:*) # BeOS running on Intel PC compatible.
+ echo i586-pc-beos
+ exit ;;
+ SX-4:SUPER-UX:*:*)
+ echo sx4-nec-superux${UNAME_RELEASE}
+ exit ;;
+ SX-5:SUPER-UX:*:*)
+ echo sx5-nec-superux${UNAME_RELEASE}
+ exit ;;
+ SX-6:SUPER-UX:*:*)
+ echo sx6-nec-superux${UNAME_RELEASE}
+ exit ;;
+ SX-7:SUPER-UX:*:*)
+ echo sx7-nec-superux${UNAME_RELEASE}
+ exit ;;
+ SX-8:SUPER-UX:*:*)
+ echo sx8-nec-superux${UNAME_RELEASE}
+ exit ;;
+ SX-8R:SUPER-UX:*:*)
+ echo sx8r-nec-superux${UNAME_RELEASE}
+ exit ;;
+ Power*:Rhapsody:*:*)
+ echo powerpc-apple-rhapsody${UNAME_RELEASE}
+ exit ;;
+ *:Rhapsody:*:*)
+ echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE}
+ exit ;;
+ *:Darwin:*:*)
+ UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
+ case $UNAME_PROCESSOR in
+ unknown) UNAME_PROCESSOR=powerpc ;;
+ esac
+ echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
+ exit ;;
+ *:procnto*:*:* | *:QNX:[0123456789]*:*)
+ UNAME_PROCESSOR=`uname -p`
+ if test "$UNAME_PROCESSOR" = "x86"; then
+ UNAME_PROCESSOR=i386
+ UNAME_MACHINE=pc
+ fi
+ echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE}
+ exit ;;
+ *:QNX:*:4*)
+ echo i386-pc-qnx
+ exit ;;
+ NSE-?:NONSTOP_KERNEL:*:*)
+ echo nse-tandem-nsk${UNAME_RELEASE}
+ exit ;;
+ NSR-?:NONSTOP_KERNEL:*:*)
+ echo nsr-tandem-nsk${UNAME_RELEASE}
+ exit ;;
+ *:NonStop-UX:*:*)
+ echo mips-compaq-nonstopux
+ exit ;;
+ BS2000:POSIX*:*:*)
+ echo bs2000-siemens-sysv
+ exit ;;
+ DS/*:UNIX_System_V:*:*)
+ echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE}
+ exit ;;
+ *:Plan9:*:*)
+ # "uname -m" is not consistent, so use $cputype instead. 386
+ # is converted to i386 for consistency with other x86
+ # operating systems.
+ if test "$cputype" = "386"; then
+ UNAME_MACHINE=i386
+ else
+ UNAME_MACHINE="$cputype"
+ fi
+ echo ${UNAME_MACHINE}-unknown-plan9
+ exit ;;
+ *:TOPS-10:*:*)
+ echo pdp10-unknown-tops10
+ exit ;;
+ *:TENEX:*:*)
+ echo pdp10-unknown-tenex
+ exit ;;
+ KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
+ echo pdp10-dec-tops20
+ exit ;;
+ XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
+ echo pdp10-xkl-tops20
+ exit ;;
+ *:TOPS-20:*:*)
+ echo pdp10-unknown-tops20
+ exit ;;
+ *:ITS:*:*)
+ echo pdp10-unknown-its
+ exit ;;
+ SEI:*:*:SEIUX)
+ echo mips-sei-seiux${UNAME_RELEASE}
+ exit ;;
+ *:DragonFly:*:*)
+ echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
+ exit ;;
+ *:*VMS:*:*)
+ UNAME_MACHINE=`(uname -p) 2>/dev/null`
+ case "${UNAME_MACHINE}" in
+ A*) echo alpha-dec-vms ; exit ;;
+ I*) echo ia64-dec-vms ; exit ;;
+ V*) echo vax-dec-vms ; exit ;;
+ esac ;;
+ *:XENIX:*:SysV)
+ echo i386-pc-xenix
+ exit ;;
+ i*86:skyos:*:*)
+ echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//'
+ exit ;;
+ i*86:rdos:*:*)
+ echo ${UNAME_MACHINE}-pc-rdos
+ exit ;;
+esac
+
+#echo '(No uname command or uname output not recognized.)' 1>&2
+#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
+
+eval $set_cc_for_build
+cat >$dummy.c <<EOF
+#ifdef _SEQUENT_
+# include <sys/types.h>
+# include <sys/utsname.h>
+#endif
+main ()
+{
+#if defined (sony)
+#if defined (MIPSEB)
+ /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed,
+ I don't know.... */
+ printf ("mips-sony-bsd\n"); exit (0);
+#else
+#include <sys/param.h>
+ printf ("m68k-sony-newsos%s\n",
+#ifdef NEWSOS4
+ "4"
+#else
+ ""
+#endif
+ ); exit (0);
+#endif
+#endif
+
+#if defined (__arm) && defined (__acorn) && defined (__unix)
+ printf ("arm-acorn-riscix\n"); exit (0);
+#endif
+
+#if defined (hp300) && !defined (hpux)
+ printf ("m68k-hp-bsd\n"); exit (0);
+#endif
+
+#if defined (NeXT)
+#if !defined (__ARCHITECTURE__)
+#define __ARCHITECTURE__ "m68k"
+#endif
+ int version;
+ version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
+ if (version < 4)
+ printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
+ else
+ printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
+ exit (0);
+#endif
+
+#if defined (MULTIMAX) || defined (n16)
+#if defined (UMAXV)
+ printf ("ns32k-encore-sysv\n"); exit (0);
+#else
+#if defined (CMU)
+ printf ("ns32k-encore-mach\n"); exit (0);
+#else
+ printf ("ns32k-encore-bsd\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (__386BSD__)
+ printf ("i386-pc-bsd\n"); exit (0);
+#endif
+
+#if defined (sequent)
+#if defined (i386)
+ printf ("i386-sequent-dynix\n"); exit (0);
+#endif
+#if defined (ns32000)
+ printf ("ns32k-sequent-dynix\n"); exit (0);
+#endif
+#endif
+
+#if defined (_SEQUENT_)
+ struct utsname un;
+
+ uname(&un);
+
+ if (strncmp(un.version, "V2", 2) == 0) {
+ printf ("i386-sequent-ptx2\n"); exit (0);
+ }
+ if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
+ printf ("i386-sequent-ptx1\n"); exit (0);
+ }
+ printf ("i386-sequent-ptx\n"); exit (0);
+
+#endif
+
+#if defined (vax)
+# if !defined (ultrix)
+# include <sys/param.h>
+# if defined (BSD)
+# if BSD == 43
+ printf ("vax-dec-bsd4.3\n"); exit (0);
+# else
+# if BSD == 199006
+ printf ("vax-dec-bsd4.3reno\n"); exit (0);
+# else
+ printf ("vax-dec-bsd\n"); exit (0);
+# endif
+# endif
+# else
+ printf ("vax-dec-bsd\n"); exit (0);
+# endif
+# else
+ printf ("vax-dec-ultrix\n"); exit (0);
+# endif
+#endif
+
+#if defined (alliant) && defined (i860)
+ printf ("i860-alliant-bsd\n"); exit (0);
+#endif
+
+ exit (1);
+}
+EOF
+
+$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` &&
+ { echo "$SYSTEM_NAME"; exit; }
+
+# Apollos put the system type in the environment.
+
+test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; }
+
+# Convex versions that predate uname can use getsysinfo(1)
+
+if [ -x /usr/convex/getsysinfo ]
+then
+ case `getsysinfo -f cpu_type` in
+ c1*)
+ echo c1-convex-bsd
+ exit ;;
+ c2*)
+ if getsysinfo -f scalar_acc
+ then echo c32-convex-bsd
+ else echo c2-convex-bsd
+ fi
+ exit ;;
+ c34*)
+ echo c34-convex-bsd
+ exit ;;
+ c38*)
+ echo c38-convex-bsd
+ exit ;;
+ c4*)
+ echo c4-convex-bsd
+ exit ;;
+ esac
+fi
+
+cat >&2 <<EOF
+$0: unable to guess system type
+
+This script, last modified $timestamp, has failed to recognize
+the operating system you are using. It is advised that you
+download the most up to date version of the config scripts from
+
+ http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
+and
+ http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
+
+If the version you run ($0) is already up to date, please
+send the following data and any information you think might be
+pertinent to <config-patches@gnu.org> in order to provide the needed
+information to handle your system.
+
+config.guess timestamp = $timestamp
+
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
+/bin/uname -X = `(/bin/uname -X) 2>/dev/null`
+
+hostinfo = `(hostinfo) 2>/dev/null`
+/bin/universe = `(/bin/universe) 2>/dev/null`
+/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null`
+/bin/arch = `(/bin/arch) 2>/dev/null`
+/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
+
+UNAME_MACHINE = ${UNAME_MACHINE}
+UNAME_RELEASE = ${UNAME_RELEASE}
+UNAME_SYSTEM = ${UNAME_SYSTEM}
+UNAME_VERSION = ${UNAME_VERSION}
+EOF
+
+exit 1
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
--- /dev/null
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the `clock_gettime' function. */
+#undef HAVE_CLOCK_GETTIME
+
+/* "use syscall interface for clock_gettime" */
+#undef HAVE_CLOCK_SYSCALL
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* Define to 1 if you have the `epoll_ctl' function. */
+#undef HAVE_EPOLL_CTL
+
+/* Define to 1 if you have the `eventfd' function. */
+#undef HAVE_EVENTFD
+
+/* Define to 1 if you have the `inotify_init' function. */
+#undef HAVE_INOTIFY_INIT
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the `kqueue' function. */
+#undef HAVE_KQUEUE
+
+/* Define to 1 if you have the `m' library (-lm). */
+#undef HAVE_LIBM
+
+/* Define to 1 if you have the `rt' library (-lrt). */
+#undef HAVE_LIBRT
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* Define to 1 if you have the `nanosleep' function. */
+#undef HAVE_NANOSLEEP
+
+/* Define to 1 if you have the `poll' function. */
+#undef HAVE_POLL
+
+/* Define to 1 if you have the <poll.h> header file. */
+#undef HAVE_POLL_H
+
+/* Define to 1 if you have the `port_create' function. */
+#undef HAVE_PORT_CREATE
+
+/* Define to 1 if you have the <port.h> header file. */
+#undef HAVE_PORT_H
+
+/* Define to 1 if you have the `select' function. */
+#undef HAVE_SELECT
+
+/* Define to 1 if you have the `signalfd' function. */
+#undef HAVE_SIGNALFD
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the <sys/epoll.h> header file. */
+#undef HAVE_SYS_EPOLL_H
+
+/* Define to 1 if you have the <sys/eventfd.h> header file. */
+#undef HAVE_SYS_EVENTFD_H
+
+/* Define to 1 if you have the <sys/event.h> header file. */
+#undef HAVE_SYS_EVENT_H
+
+/* Define to 1 if you have the <sys/inotify.h> header file. */
+#undef HAVE_SYS_INOTIFY_H
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#undef HAVE_SYS_SELECT_H
+
+/* Define to 1 if you have the <sys/signalfd.h> header file. */
+#undef HAVE_SYS_SIGNALFD_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#undef LT_OBJDIR
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Version number of package */
+#undef VERSION
--- /dev/null
+#! /bin/sh
+# Configuration validation subroutine script.
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+# Free Software Foundation, Inc.
+
+timestamp='2008-01-16'
+
+# This file is (in principle) common to ALL GNU software.
+# The presence of a machine in this file suggests that SOME GNU software
+# can handle that machine. It does not imply ALL GNU software can.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
+# 02110-1301, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+
+# Please send patches to <config-patches@gnu.org>. Submit a context
+# diff and a properly formatted ChangeLog entry.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support. The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+# CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS
+ $0 [OPTION] ALIAS
+
+Canonicalize a configuration name.
+
+Operation modes:
+ -h, --help print this help, then exit
+ -t, --time-stamp print date of last modification, then exit
+ -v, --version print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions. There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+ case $1 in
+ --time-stamp | --time* | -t )
+ echo "$timestamp" ; exit ;;
+ --version | -v )
+ echo "$version" ; exit ;;
+ --help | --h* | -h )
+ echo "$usage"; exit ;;
+ -- ) # Stop option processing
+ shift; break ;;
+ - ) # Use stdin as input.
+ break ;;
+ -* )
+ echo "$me: invalid option $1$help"
+ exit 1 ;;
+
+ *local*)
+ # First pass through any local machine types.
+ echo $1
+ exit ;;
+
+ * )
+ break ;;
+ esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+ exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+ exit 1;;
+esac
+
+# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
+# Here we must recognize all the valid KERNEL-OS combinations.
+maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
+case $maybe_os in
+ nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \
+ uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \
+ storm-chaos* | os2-emx* | rtmk-nova*)
+ os=-$maybe_os
+ basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
+ ;;
+ *)
+ basic_machine=`echo $1 | sed 's/-[^-]*$//'`
+ if [ $basic_machine != $1 ]
+ then os=`echo $1 | sed 's/.*-/-/'`
+ else os=; fi
+ ;;
+esac
+
+### Let's recognize common machines as not being operating systems so
+### that things like config.sub decstation-3100 work. We also
+### recognize some manufacturers as not being operating systems, so we
+### can provide default operating systems below.
+case $os in
+ -sun*os*)
+ # Prevent following clause from handling this invalid input.
+ ;;
+ -dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \
+ -att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \
+ -unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \
+ -convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
+ -c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
+ -harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
+ -apple | -axis | -knuth | -cray)
+ os=
+ basic_machine=$1
+ ;;
+ -sim | -cisco | -oki | -wec | -winbond)
+ os=
+ basic_machine=$1
+ ;;
+ -scout)
+ ;;
+ -wrs)
+ os=-vxworks
+ basic_machine=$1
+ ;;
+ -chorusos*)
+ os=-chorusos
+ basic_machine=$1
+ ;;
+ -chorusrdb)
+ os=-chorusrdb
+ basic_machine=$1
+ ;;
+ -hiux*)
+ os=-hiuxwe2
+ ;;
+ -sco6)
+ os=-sco5v6
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco5)
+ os=-sco3.2v5
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco4)
+ os=-sco3.2v4
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco3.2.[4-9]*)
+ os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco3.2v[4-9]*)
+ # Don't forget version if it is 3.2v4 or newer.
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco5v6*)
+ # Don't forget version if it is 3.2v4 or newer.
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -sco*)
+ os=-sco3.2v2
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -udk*)
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -isc)
+ os=-isc2.2
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -clix*)
+ basic_machine=clipper-intergraph
+ ;;
+ -isc*)
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+ ;;
+ -lynx*)
+ os=-lynxos
+ ;;
+ -ptx*)
+ basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'`
+ ;;
+ -windowsnt*)
+ os=`echo $os | sed -e 's/windowsnt/winnt/'`
+ ;;
+ -psos*)
+ os=-psos
+ ;;
+ -mint | -mint[0-9]*)
+ basic_machine=m68k-atari
+ os=-mint
+ ;;
+esac
+
+# Decode aliases for certain CPU-COMPANY combinations.
+case $basic_machine in
+ # Recognize the basic CPU types without company name.
+ # Some are omitted here because they have special meanings below.
+ 1750a | 580 \
+ | a29k \
+ | alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
+ | alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
+ | am33_2.0 \
+ | arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \
+ | bfin \
+ | c4x | clipper \
+ | d10v | d30v | dlx | dsp16xx \
+ | fido | fr30 | frv \
+ | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+ | i370 | i860 | i960 | ia64 \
+ | ip2k | iq2000 \
+ | m32c | m32r | m32rle | m68000 | m68k | m88k \
+ | maxq | mb | microblaze | mcore | mep \
+ | mips | mipsbe | mipseb | mipsel | mipsle \
+ | mips16 \
+ | mips64 | mips64el \
+ | mips64vr | mips64vrel \
+ | mips64orion | mips64orionel \
+ | mips64vr4100 | mips64vr4100el \
+ | mips64vr4300 | mips64vr4300el \
+ | mips64vr5000 | mips64vr5000el \
+ | mips64vr5900 | mips64vr5900el \
+ | mipsisa32 | mipsisa32el \
+ | mipsisa32r2 | mipsisa32r2el \
+ | mipsisa64 | mipsisa64el \
+ | mipsisa64r2 | mipsisa64r2el \
+ | mipsisa64sb1 | mipsisa64sb1el \
+ | mipsisa64sr71k | mipsisa64sr71kel \
+ | mipstx39 | mipstx39el \
+ | mn10200 | mn10300 \
+ | mt \
+ | msp430 \
+ | nios | nios2 \
+ | ns16k | ns32k \
+ | or32 \
+ | pdp10 | pdp11 | pj | pjl \
+ | powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
+ | pyramid \
+ | score \
+ | sh | sh[1234] | sh[24]a | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
+ | sh64 | sh64le \
+ | sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
+ | sparcv8 | sparcv9 | sparcv9b | sparcv9v \
+ | spu | strongarm \
+ | tahoe | thumb | tic4x | tic80 | tron \
+ | v850 | v850e \
+ | we32k \
+ | x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \
+ | z8k)
+ basic_machine=$basic_machine-unknown
+ ;;
+ m6811 | m68hc11 | m6812 | m68hc12)
+ # Motorola 68HC11/12.
+ basic_machine=$basic_machine-unknown
+ os=-none
+ ;;
+ m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
+ ;;
+ ms1)
+ basic_machine=mt-unknown
+ ;;
+
+ # We use `pc' rather than `unknown'
+ # because (1) that's what they normally are, and
+ # (2) the word "unknown" tends to confuse beginning users.
+ i*86 | x86_64)
+ basic_machine=$basic_machine-pc
+ ;;
+ # Object if more than one company name word.
+ *-*-*)
+ echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+ exit 1
+ ;;
+ # Recognize the basic CPU types with company name.
+ 580-* \
+ | a29k-* \
+ | alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
+ | alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
+ | alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
+ | arm-* | armbe-* | armle-* | armeb-* | armv*-* \
+ | avr-* | avr32-* \
+ | bfin-* | bs2000-* \
+ | c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
+ | clipper-* | craynv-* | cydra-* \
+ | d10v-* | d30v-* | dlx-* \
+ | elxsi-* \
+ | f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
+ | h8300-* | h8500-* \
+ | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
+ | i*86-* | i860-* | i960-* | ia64-* \
+ | ip2k-* | iq2000-* \
+ | m32c-* | m32r-* | m32rle-* \
+ | m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
+ | m88110-* | m88k-* | maxq-* | mcore-* \
+ | mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
+ | mips16-* \
+ | mips64-* | mips64el-* \
+ | mips64vr-* | mips64vrel-* \
+ | mips64orion-* | mips64orionel-* \
+ | mips64vr4100-* | mips64vr4100el-* \
+ | mips64vr4300-* | mips64vr4300el-* \
+ | mips64vr5000-* | mips64vr5000el-* \
+ | mips64vr5900-* | mips64vr5900el-* \
+ | mipsisa32-* | mipsisa32el-* \
+ | mipsisa32r2-* | mipsisa32r2el-* \
+ | mipsisa64-* | mipsisa64el-* \
+ | mipsisa64r2-* | mipsisa64r2el-* \
+ | mipsisa64sb1-* | mipsisa64sb1el-* \
+ | mipsisa64sr71k-* | mipsisa64sr71kel-* \
+ | mipstx39-* | mipstx39el-* \
+ | mmix-* \
+ | mt-* \
+ | msp430-* \
+ | nios-* | nios2-* \
+ | none-* | np1-* | ns16k-* | ns32k-* \
+ | orion-* \
+ | pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
+ | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
+ | pyramid-* \
+ | romp-* | rs6000-* \
+ | sh-* | sh[1234]-* | sh[24]a-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
+ | shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
+ | sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
+ | sparclite-* \
+ | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | strongarm-* | sv1-* | sx?-* \
+ | tahoe-* | thumb-* \
+ | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
+ | tron-* \
+ | v850-* | v850e-* | vax-* \
+ | we32k-* \
+ | x86-* | x86_64-* | xc16x-* | xps100-* | xscale-* | xscalee[bl]-* \
+ | xstormy16-* | xtensa*-* \
+ | ymp-* \
+ | z8k-*)
+ ;;
+ # Recognize the basic CPU types without company name, with glob match.
+ xtensa*)
+ basic_machine=$basic_machine-unknown
+ ;;
+ # Recognize the various machine names and aliases which stand
+ # for a CPU type and a company and sometimes even an OS.
+ 386bsd)
+ basic_machine=i386-unknown
+ os=-bsd
+ ;;
+ 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+ basic_machine=m68000-att
+ ;;
+ 3b*)
+ basic_machine=we32k-att
+ ;;
+ a29khif)
+ basic_machine=a29k-amd
+ os=-udi
+ ;;
+ abacus)
+ basic_machine=abacus-unknown
+ ;;
+ adobe68k)
+ basic_machine=m68010-adobe
+ os=-scout
+ ;;
+ alliant | fx80)
+ basic_machine=fx80-alliant
+ ;;
+ altos | altos3068)
+ basic_machine=m68k-altos
+ ;;
+ am29k)
+ basic_machine=a29k-none
+ os=-bsd
+ ;;
+ amd64)
+ basic_machine=x86_64-pc
+ ;;
+ amd64-*)
+ basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ amdahl)
+ basic_machine=580-amdahl
+ os=-sysv
+ ;;
+ amiga | amiga-*)
+ basic_machine=m68k-unknown
+ ;;
+ amigaos | amigados)
+ basic_machine=m68k-unknown
+ os=-amigaos
+ ;;
+ amigaunix | amix)
+ basic_machine=m68k-unknown
+ os=-sysv4
+ ;;
+ apollo68)
+ basic_machine=m68k-apollo
+ os=-sysv
+ ;;
+ apollo68bsd)
+ basic_machine=m68k-apollo
+ os=-bsd
+ ;;
+ aux)
+ basic_machine=m68k-apple
+ os=-aux
+ ;;
+ balance)
+ basic_machine=ns32k-sequent
+ os=-dynix
+ ;;
+ blackfin)
+ basic_machine=bfin-unknown
+ os=-linux
+ ;;
+ blackfin-*)
+ basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'`
+ os=-linux
+ ;;
+ c90)
+ basic_machine=c90-cray
+ os=-unicos
+ ;;
+ convex-c1)
+ basic_machine=c1-convex
+ os=-bsd
+ ;;
+ convex-c2)
+ basic_machine=c2-convex
+ os=-bsd
+ ;;
+ convex-c32)
+ basic_machine=c32-convex
+ os=-bsd
+ ;;
+ convex-c34)
+ basic_machine=c34-convex
+ os=-bsd
+ ;;
+ convex-c38)
+ basic_machine=c38-convex
+ os=-bsd
+ ;;
+ cray | j90)
+ basic_machine=j90-cray
+ os=-unicos
+ ;;
+ craynv)
+ basic_machine=craynv-cray
+ os=-unicosmp
+ ;;
+ cr16)
+ basic_machine=cr16-unknown
+ os=-elf
+ ;;
+ crds | unos)
+ basic_machine=m68k-crds
+ ;;
+ crisv32 | crisv32-* | etraxfs*)
+ basic_machine=crisv32-axis
+ ;;
+ cris | cris-* | etrax*)
+ basic_machine=cris-axis
+ ;;
+ crx)
+ basic_machine=crx-unknown
+ os=-elf
+ ;;
+ da30 | da30-*)
+ basic_machine=m68k-da30
+ ;;
+ decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
+ basic_machine=mips-dec
+ ;;
+ decsystem10* | dec10*)
+ basic_machine=pdp10-dec
+ os=-tops10
+ ;;
+ decsystem20* | dec20*)
+ basic_machine=pdp10-dec
+ os=-tops20
+ ;;
+ delta | 3300 | motorola-3300 | motorola-delta \
+ | 3300-motorola | delta-motorola)
+ basic_machine=m68k-motorola
+ ;;
+ delta88)
+ basic_machine=m88k-motorola
+ os=-sysv3
+ ;;
+ djgpp)
+ basic_machine=i586-pc
+ os=-msdosdjgpp
+ ;;
+ dpx20 | dpx20-*)
+ basic_machine=rs6000-bull
+ os=-bosx
+ ;;
+ dpx2* | dpx2*-bull)
+ basic_machine=m68k-bull
+ os=-sysv3
+ ;;
+ ebmon29k)
+ basic_machine=a29k-amd
+ os=-ebmon
+ ;;
+ elxsi)
+ basic_machine=elxsi-elxsi
+ os=-bsd
+ ;;
+ encore | umax | mmax)
+ basic_machine=ns32k-encore
+ ;;
+ es1800 | OSE68k | ose68k | ose | OSE)
+ basic_machine=m68k-ericsson
+ os=-ose
+ ;;
+ fx2800)
+ basic_machine=i860-alliant
+ ;;
+ genix)
+ basic_machine=ns32k-ns
+ ;;
+ gmicro)
+ basic_machine=tron-gmicro
+ os=-sysv
+ ;;
+ go32)
+ basic_machine=i386-pc
+ os=-go32
+ ;;
+ h3050r* | hiux*)
+ basic_machine=hppa1.1-hitachi
+ os=-hiuxwe2
+ ;;
+ h8300hms)
+ basic_machine=h8300-hitachi
+ os=-hms
+ ;;
+ h8300xray)
+ basic_machine=h8300-hitachi
+ os=-xray
+ ;;
+ h8500hms)
+ basic_machine=h8500-hitachi
+ os=-hms
+ ;;
+ harris)
+ basic_machine=m88k-harris
+ os=-sysv3
+ ;;
+ hp300-*)
+ basic_machine=m68k-hp
+ ;;
+ hp300bsd)
+ basic_machine=m68k-hp
+ os=-bsd
+ ;;
+ hp300hpux)
+ basic_machine=m68k-hp
+ os=-hpux
+ ;;
+ hp3k9[0-9][0-9] | hp9[0-9][0-9])
+ basic_machine=hppa1.0-hp
+ ;;
+ hp9k2[0-9][0-9] | hp9k31[0-9])
+ basic_machine=m68000-hp
+ ;;
+ hp9k3[2-9][0-9])
+ basic_machine=m68k-hp
+ ;;
+ hp9k6[0-9][0-9] | hp6[0-9][0-9])
+ basic_machine=hppa1.0-hp
+ ;;
+ hp9k7[0-79][0-9] | hp7[0-79][0-9])
+ basic_machine=hppa1.1-hp
+ ;;
+ hp9k78[0-9] | hp78[0-9])
+ # FIXME: really hppa2.0-hp
+ basic_machine=hppa1.1-hp
+ ;;
+ hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+ # FIXME: really hppa2.0-hp
+ basic_machine=hppa1.1-hp
+ ;;
+ hp9k8[0-9][13679] | hp8[0-9][13679])
+ basic_machine=hppa1.1-hp
+ ;;
+ hp9k8[0-9][0-9] | hp8[0-9][0-9])
+ basic_machine=hppa1.0-hp
+ ;;
+ hppa-next)
+ os=-nextstep3
+ ;;
+ hppaosf)
+ basic_machine=hppa1.1-hp
+ os=-osf
+ ;;
+ hppro)
+ basic_machine=hppa1.1-hp
+ os=-proelf
+ ;;
+ i370-ibm* | ibm*)
+ basic_machine=i370-ibm
+ ;;
+# I'm not sure what "Sysv32" means. Should this be sysv3.2?
+ i*86v32)
+ basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+ os=-sysv32
+ ;;
+ i*86v4*)
+ basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+ os=-sysv4
+ ;;
+ i*86v)
+ basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+ os=-sysv
+ ;;
+ i*86sol2)
+ basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+ os=-solaris2
+ ;;
+ i386mach)
+ basic_machine=i386-mach
+ os=-mach
+ ;;
+ i386-vsta | vsta)
+ basic_machine=i386-unknown
+ os=-vsta
+ ;;
+ iris | iris4d)
+ basic_machine=mips-sgi
+ case $os in
+ -irix*)
+ ;;
+ *)
+ os=-irix4
+ ;;
+ esac
+ ;;
+ isi68 | isi)
+ basic_machine=m68k-isi
+ os=-sysv
+ ;;
+ m68knommu)
+ basic_machine=m68k-unknown
+ os=-linux
+ ;;
+ m68knommu-*)
+ basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'`
+ os=-linux
+ ;;
+ m88k-omron*)
+ basic_machine=m88k-omron
+ ;;
+ magnum | m3230)
+ basic_machine=mips-mips
+ os=-sysv
+ ;;
+ merlin)
+ basic_machine=ns32k-utek
+ os=-sysv
+ ;;
+ mingw32)
+ basic_machine=i386-pc
+ os=-mingw32
+ ;;
+ mingw32ce)
+ basic_machine=arm-unknown
+ os=-mingw32ce
+ ;;
+ miniframe)
+ basic_machine=m68000-convergent
+ ;;
+ *mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
+ basic_machine=m68k-atari
+ os=-mint
+ ;;
+ mips3*-*)
+ basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
+ ;;
+ mips3*)
+ basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
+ ;;
+ monitor)
+ basic_machine=m68k-rom68k
+ os=-coff
+ ;;
+ morphos)
+ basic_machine=powerpc-unknown
+ os=-morphos
+ ;;
+ msdos)
+ basic_machine=i386-pc
+ os=-msdos
+ ;;
+ ms1-*)
+ basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
+ ;;
+ mvs)
+ basic_machine=i370-ibm
+ os=-mvs
+ ;;
+ ncr3000)
+ basic_machine=i486-ncr
+ os=-sysv4
+ ;;
+ netbsd386)
+ basic_machine=i386-unknown
+ os=-netbsd
+ ;;
+ netwinder)
+ basic_machine=armv4l-rebel
+ os=-linux
+ ;;
+ news | news700 | news800 | news900)
+ basic_machine=m68k-sony
+ os=-newsos
+ ;;
+ news1000)
+ basic_machine=m68030-sony
+ os=-newsos
+ ;;
+ news-3600 | risc-news)
+ basic_machine=mips-sony
+ os=-newsos
+ ;;
+ necv70)
+ basic_machine=v70-nec
+ os=-sysv
+ ;;
+ next | m*-next )
+ basic_machine=m68k-next
+ case $os in
+ -nextstep* )
+ ;;
+ -ns2*)
+ os=-nextstep2
+ ;;
+ *)
+ os=-nextstep3
+ ;;
+ esac
+ ;;
+ nh3000)
+ basic_machine=m68k-harris
+ os=-cxux
+ ;;
+ nh[45]000)
+ basic_machine=m88k-harris
+ os=-cxux
+ ;;
+ nindy960)
+ basic_machine=i960-intel
+ os=-nindy
+ ;;
+ mon960)
+ basic_machine=i960-intel
+ os=-mon960
+ ;;
+ nonstopux)
+ basic_machine=mips-compaq
+ os=-nonstopux
+ ;;
+ np1)
+ basic_machine=np1-gould
+ ;;
+ nsr-tandem)
+ basic_machine=nsr-tandem
+ ;;
+ op50n-* | op60c-*)
+ basic_machine=hppa1.1-oki
+ os=-proelf
+ ;;
+ openrisc | openrisc-*)
+ basic_machine=or32-unknown
+ ;;
+ os400)
+ basic_machine=powerpc-ibm
+ os=-os400
+ ;;
+ OSE68000 | ose68000)
+ basic_machine=m68000-ericsson
+ os=-ose
+ ;;
+ os68k)
+ basic_machine=m68k-none
+ os=-os68k
+ ;;
+ pa-hitachi)
+ basic_machine=hppa1.1-hitachi
+ os=-hiuxwe2
+ ;;
+ paragon)
+ basic_machine=i860-intel
+ os=-osf
+ ;;
+ parisc)
+ basic_machine=hppa-unknown
+ os=-linux
+ ;;
+ parisc-*)
+ basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'`
+ os=-linux
+ ;;
+ pbd)
+ basic_machine=sparc-tti
+ ;;
+ pbb)
+ basic_machine=m68k-tti
+ ;;
+ pc532 | pc532-*)
+ basic_machine=ns32k-pc532
+ ;;
+ pc98)
+ basic_machine=i386-pc
+ ;;
+ pc98-*)
+ basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ pentium | p5 | k5 | k6 | nexgen | viac3)
+ basic_machine=i586-pc
+ ;;
+ pentiumpro | p6 | 6x86 | athlon | athlon_*)
+ basic_machine=i686-pc
+ ;;
+ pentiumii | pentium2 | pentiumiii | pentium3)
+ basic_machine=i686-pc
+ ;;
+ pentium4)
+ basic_machine=i786-pc
+ ;;
+ pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+ basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ pentiumpro-* | p6-* | 6x86-* | athlon-*)
+ basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+ basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ pentium4-*)
+ basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ pn)
+ basic_machine=pn-gould
+ ;;
+ power) basic_machine=power-ibm
+ ;;
+ ppc) basic_machine=powerpc-unknown
+ ;;
+ ppc-*) basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ ppcle | powerpclittle | ppc-le | powerpc-little)
+ basic_machine=powerpcle-unknown
+ ;;
+ ppcle-* | powerpclittle-*)
+ basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ ppc64) basic_machine=powerpc64-unknown
+ ;;
+ ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ ppc64le | powerpc64little | ppc64-le | powerpc64-little)
+ basic_machine=powerpc64le-unknown
+ ;;
+ ppc64le-* | powerpc64little-*)
+ basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
+ ;;
+ ps2)
+ basic_machine=i386-ibm
+ ;;
+ pw32)
+ basic_machine=i586-unknown
+ os=-pw32
+ ;;
+ rdos)
+ basic_machine=i386-pc
+ os=-rdos
+ ;;
+ rom68k)
+ basic_machine=m68k-rom68k
+ os=-coff
+ ;;
+ rm[46]00)
+ basic_machine=mips-siemens
+ ;;
+ rtpc | rtpc-*)
+ basic_machine=romp-ibm
+ ;;
+ s390 | s390-*)
+ basic_machine=s390-ibm
+ ;;
+ s390x | s390x-*)
+ basic_machine=s390x-ibm
+ ;;
+ sa29200)
+ basic_machine=a29k-amd
+ os=-udi
+ ;;
+ sb1)
+ basic_machine=mipsisa64sb1-unknown
+ ;;
+ sb1el)
+ basic_machine=mipsisa64sb1el-unknown
+ ;;
+ sde)
+ basic_machine=mipsisa32-sde
+ os=-elf
+ ;;
+ sei)
+ basic_machine=mips-sei
+ os=-seiux
+ ;;
+ sequent)
+ basic_machine=i386-sequent
+ ;;
+ sh)
+ basic_machine=sh-hitachi
+ os=-hms
+ ;;
+ sh5el)
+ basic_machine=sh5le-unknown
+ ;;
+ sh64)
+ basic_machine=sh64-unknown
+ ;;
+ sparclite-wrs | simso-wrs)
+ basic_machine=sparclite-wrs
+ os=-vxworks
+ ;;
+ sps7)
+ basic_machine=m68k-bull
+ os=-sysv2
+ ;;
+ spur)
+ basic_machine=spur-unknown
+ ;;
+ st2000)
+ basic_machine=m68k-tandem
+ ;;
+ stratus)
+ basic_machine=i860-stratus
+ os=-sysv4
+ ;;
+ sun2)
+ basic_machine=m68000-sun
+ ;;
+ sun2os3)
+ basic_machine=m68000-sun
+ os=-sunos3
+ ;;
+ sun2os4)
+ basic_machine=m68000-sun
+ os=-sunos4
+ ;;
+ sun3os3)
+ basic_machine=m68k-sun
+ os=-sunos3
+ ;;
+ sun3os4)
+ basic_machine=m68k-sun
+ os=-sunos4
+ ;;
+ sun4os3)
+ basic_machine=sparc-sun
+ os=-sunos3
+ ;;
+ sun4os4)
+ basic_machine=sparc-sun
+ os=-sunos4
+ ;;
+ sun4sol2)
+ basic_machine=sparc-sun
+ os=-solaris2
+ ;;
+ sun3 | sun3-*)
+ basic_machine=m68k-sun
+ ;;
+ sun4)
+ basic_machine=sparc-sun
+ ;;
+ sun386 | sun386i | roadrunner)
+ basic_machine=i386-sun
+ ;;
+ sv1)
+ basic_machine=sv1-cray
+ os=-unicos
+ ;;
+ symmetry)
+ basic_machine=i386-sequent
+ os=-dynix
+ ;;
+ t3e)
+ basic_machine=alphaev5-cray
+ os=-unicos
+ ;;
+ t90)
+ basic_machine=t90-cray
+ os=-unicos
+ ;;
+ tic54x | c54x*)
+ basic_machine=tic54x-unknown
+ os=-coff
+ ;;
+ tic55x | c55x*)
+ basic_machine=tic55x-unknown
+ os=-coff
+ ;;
+ tic6x | c6x*)
+ basic_machine=tic6x-unknown
+ os=-coff
+ ;;
+ tile*)
+ basic_machine=tile-unknown
+ os=-linux-gnu
+ ;;
+ tx39)
+ basic_machine=mipstx39-unknown
+ ;;
+ tx39el)
+ basic_machine=mipstx39el-unknown
+ ;;
+ toad1)
+ basic_machine=pdp10-xkl
+ os=-tops20
+ ;;
+ tower | tower-32)
+ basic_machine=m68k-ncr
+ ;;
+ tpf)
+ basic_machine=s390x-ibm
+ os=-tpf
+ ;;
+ udi29k)
+ basic_machine=a29k-amd
+ os=-udi
+ ;;
+ ultra3)
+ basic_machine=a29k-nyu
+ os=-sym1
+ ;;
+ v810 | necv810)
+ basic_machine=v810-nec
+ os=-none
+ ;;
+ vaxv)
+ basic_machine=vax-dec
+ os=-sysv
+ ;;
+ vms)
+ basic_machine=vax-dec
+ os=-vms
+ ;;
+ vpp*|vx|vx-*)
+ basic_machine=f301-fujitsu
+ ;;
+ vxworks960)
+ basic_machine=i960-wrs
+ os=-vxworks
+ ;;
+ vxworks68)
+ basic_machine=m68k-wrs
+ os=-vxworks
+ ;;
+ vxworks29k)
+ basic_machine=a29k-wrs
+ os=-vxworks
+ ;;
+ w65*)
+ basic_machine=w65-wdc
+ os=-none
+ ;;
+ w89k-*)
+ basic_machine=hppa1.1-winbond
+ os=-proelf
+ ;;
+ xbox)
+ basic_machine=i686-pc
+ os=-mingw32
+ ;;
+ xps | xps100)
+ basic_machine=xps100-honeywell
+ ;;
+ ymp)
+ basic_machine=ymp-cray
+ os=-unicos
+ ;;
+ z8k-*-coff)
+ basic_machine=z8k-unknown
+ os=-sim
+ ;;
+ none)
+ basic_machine=none-none
+ os=-none
+ ;;
+
+# Here we handle the default manufacturer of certain CPU types. It is in
+# some cases the only manufacturer, in others, it is the most popular.
+ w89k)
+ basic_machine=hppa1.1-winbond
+ ;;
+ op50n)
+ basic_machine=hppa1.1-oki
+ ;;
+ op60c)
+ basic_machine=hppa1.1-oki
+ ;;
+ romp)
+ basic_machine=romp-ibm
+ ;;
+ mmix)
+ basic_machine=mmix-knuth
+ ;;
+ rs6000)
+ basic_machine=rs6000-ibm
+ ;;
+ vax)
+ basic_machine=vax-dec
+ ;;
+ pdp10)
+ # there are many clones, so DEC is not a safe bet
+ basic_machine=pdp10-unknown
+ ;;
+ pdp11)
+ basic_machine=pdp11-dec
+ ;;
+ we32k)
+ basic_machine=we32k-att
+ ;;
+ sh[1234] | sh[24]a | sh[34]eb | sh[1234]le | sh[23]ele)
+ basic_machine=sh-unknown
+ ;;
+ sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v)
+ basic_machine=sparc-sun
+ ;;
+ cydra)
+ basic_machine=cydra-cydrome
+ ;;
+ orion)
+ basic_machine=orion-highlevel
+ ;;
+ orion105)
+ basic_machine=clipper-highlevel
+ ;;
+ mac | mpw | mac-mpw)
+ basic_machine=m68k-apple
+ ;;
+ pmac | pmac-mpw)
+ basic_machine=powerpc-apple
+ ;;
+ *-unknown)
+ # Make sure to match an already-canonicalized machine name.
+ ;;
+ *)
+ echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+ exit 1
+ ;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $basic_machine in
+ *-digital*)
+ basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'`
+ ;;
+ *-commodore*)
+ basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'`
+ ;;
+ *)
+ ;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if [ x"$os" != x"" ]
+then
+case $os in
+ # First match some system type aliases
+ # that might get confused with valid system types.
+ # -solaris* is a basic system type, with this one exception.
+ -solaris1 | -solaris1.*)
+ os=`echo $os | sed -e 's|solaris1|sunos4|'`
+ ;;
+ -solaris)
+ os=-solaris2
+ ;;
+ -svr4*)
+ os=-sysv4
+ ;;
+ -unixware*)
+ os=-sysv4.2uw
+ ;;
+ -gnu/linux*)
+ os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
+ ;;
+ # First accept the basic system types.
+ # The portable systems comes first.
+ # Each alternative MUST END IN A *, to match a version number.
+ # -sysv* is not here because it comes later, after sysvr4.
+ -gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
+ | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\
+ | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
+ | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
+ | -aos* \
+ | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
+ | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
+ | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
+ | -openbsd* | -solidbsd* \
+ | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
+ | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
+ | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
+ | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
+ | -chorusos* | -chorusrdb* \
+ | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+ | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \
+ | -uxpv* | -beos* | -mpeix* | -udk* \
+ | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+ | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
+ | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
+ | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
+ | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
+ | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
+ | -skyos* | -haiku* | -rdos* | -toppers* | -drops*)
+ # Remember, each alternative MUST END IN *, to match a version number.
+ ;;
+ -qnx*)
+ case $basic_machine in
+ x86-* | i*86-*)
+ ;;
+ *)
+ os=-nto$os
+ ;;
+ esac
+ ;;
+ -nto-qnx*)
+ ;;
+ -nto*)
+ os=`echo $os | sed -e 's|nto|nto-qnx|'`
+ ;;
+ -sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
+ | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \
+ | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
+ ;;
+ -mac*)
+ os=`echo $os | sed -e 's|mac|macos|'`
+ ;;
+ -linux-dietlibc)
+ os=-linux-dietlibc
+ ;;
+ -linux*)
+ os=`echo $os | sed -e 's|linux|linux-gnu|'`
+ ;;
+ -sunos5*)
+ os=`echo $os | sed -e 's|sunos5|solaris2|'`
+ ;;
+ -sunos6*)
+ os=`echo $os | sed -e 's|sunos6|solaris3|'`
+ ;;
+ -opened*)
+ os=-openedition
+ ;;
+ -os400*)
+ os=-os400
+ ;;
+ -wince*)
+ os=-wince
+ ;;
+ -osfrose*)
+ os=-osfrose
+ ;;
+ -osf*)
+ os=-osf
+ ;;
+ -utek*)
+ os=-bsd
+ ;;
+ -dynix*)
+ os=-bsd
+ ;;
+ -acis*)
+ os=-aos
+ ;;
+ -atheos*)
+ os=-atheos
+ ;;
+ -syllable*)
+ os=-syllable
+ ;;
+ -386bsd)
+ os=-bsd
+ ;;
+ -ctix* | -uts*)
+ os=-sysv
+ ;;
+ -nova*)
+ os=-rtmk-nova
+ ;;
+ -ns2 )
+ os=-nextstep2
+ ;;
+ -nsk*)
+ os=-nsk
+ ;;
+ # Preserve the version number of sinix5.
+ -sinix5.*)
+ os=`echo $os | sed -e 's|sinix|sysv|'`
+ ;;
+ -sinix*)
+ os=-sysv4
+ ;;
+ -tpf*)
+ os=-tpf
+ ;;
+ -triton*)
+ os=-sysv3
+ ;;
+ -oss*)
+ os=-sysv3
+ ;;
+ -svr4)
+ os=-sysv4
+ ;;
+ -svr3)
+ os=-sysv3
+ ;;
+ -sysvr4)
+ os=-sysv4
+ ;;
+ # This must come after -sysvr4.
+ -sysv*)
+ ;;
+ -ose*)
+ os=-ose
+ ;;
+ -es1800*)
+ os=-ose
+ ;;
+ -xenix)
+ os=-xenix
+ ;;
+ -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+ os=-mint
+ ;;
+ -aros*)
+ os=-aros
+ ;;
+ -kaos*)
+ os=-kaos
+ ;;
+ -zvmoe)
+ os=-zvmoe
+ ;;
+ -none)
+ ;;
+ *)
+ # Get rid of the `-' at the beginning of $os.
+ os=`echo $os | sed 's/[^-]*-//'`
+ echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
+ exit 1
+ ;;
+esac
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system. Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+case $basic_machine in
+ score-*)
+ os=-elf
+ ;;
+ spu-*)
+ os=-elf
+ ;;
+ *-acorn)
+ os=-riscix1.2
+ ;;
+ arm*-rebel)
+ os=-linux
+ ;;
+ arm*-semi)
+ os=-aout
+ ;;
+ c4x-* | tic4x-*)
+ os=-coff
+ ;;
+ # This must come before the *-dec entry.
+ pdp10-*)
+ os=-tops20
+ ;;
+ pdp11-*)
+ os=-none
+ ;;
+ *-dec | vax-*)
+ os=-ultrix4.2
+ ;;
+ m68*-apollo)
+ os=-domain
+ ;;
+ i386-sun)
+ os=-sunos4.0.2
+ ;;
+ m68000-sun)
+ os=-sunos3
+ # This also exists in the configure program, but was not the
+ # default.
+ # os=-sunos4
+ ;;
+ m68*-cisco)
+ os=-aout
+ ;;
+ mep-*)
+ os=-elf
+ ;;
+ mips*-cisco)
+ os=-elf
+ ;;
+ mips*-*)
+ os=-elf
+ ;;
+ or32-*)
+ os=-coff
+ ;;
+ *-tti) # must be before sparc entry or we get the wrong os.
+ os=-sysv3
+ ;;
+ sparc-* | *-sun)
+ os=-sunos4.1.1
+ ;;
+ *-be)
+ os=-beos
+ ;;
+ *-haiku)
+ os=-haiku
+ ;;
+ *-ibm)
+ os=-aix
+ ;;
+ *-knuth)
+ os=-mmixware
+ ;;
+ *-wec)
+ os=-proelf
+ ;;
+ *-winbond)
+ os=-proelf
+ ;;
+ *-oki)
+ os=-proelf
+ ;;
+ *-hp)
+ os=-hpux
+ ;;
+ *-hitachi)
+ os=-hiux
+ ;;
+ i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+ os=-sysv
+ ;;
+ *-cbm)
+ os=-amigaos
+ ;;
+ *-dg)
+ os=-dgux
+ ;;
+ *-dolphin)
+ os=-sysv3
+ ;;
+ m68k-ccur)
+ os=-rtu
+ ;;
+ m88k-omron*)
+ os=-luna
+ ;;
+ *-next )
+ os=-nextstep
+ ;;
+ *-sequent)
+ os=-ptx
+ ;;
+ *-crds)
+ os=-unos
+ ;;
+ *-ns)
+ os=-genix
+ ;;
+ i370-*)
+ os=-mvs
+ ;;
+ *-next)
+ os=-nextstep3
+ ;;
+ *-gould)
+ os=-sysv
+ ;;
+ *-highlevel)
+ os=-bsd
+ ;;
+ *-encore)
+ os=-bsd
+ ;;
+ *-sgi)
+ os=-irix
+ ;;
+ *-siemens)
+ os=-sysv4
+ ;;
+ *-masscomp)
+ os=-rtu
+ ;;
+ f30[01]-fujitsu | f700-fujitsu)
+ os=-uxpv
+ ;;
+ *-rom68k)
+ os=-coff
+ ;;
+ *-*bug)
+ os=-coff
+ ;;
+ *-apple)
+ os=-macos
+ ;;
+ *-atari*)
+ os=-mint
+ ;;
+ *)
+ os=-none
+ ;;
+esac
+fi
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer. We pick the logical manufacturer.
+vendor=unknown
+case $basic_machine in
+ *-unknown)
+ case $os in
+ -riscix*)
+ vendor=acorn
+ ;;
+ -sunos*)
+ vendor=sun
+ ;;
+ -aix*)
+ vendor=ibm
+ ;;
+ -beos*)
+ vendor=be
+ ;;
+ -hpux*)
+ vendor=hp
+ ;;
+ -mpeix*)
+ vendor=hp
+ ;;
+ -hiux*)
+ vendor=hitachi
+ ;;
+ -unos*)
+ vendor=crds
+ ;;
+ -dgux*)
+ vendor=dg
+ ;;
+ -luna*)
+ vendor=omron
+ ;;
+ -genix*)
+ vendor=ns
+ ;;
+ -mvs* | -opened*)
+ vendor=ibm
+ ;;
+ -os400*)
+ vendor=ibm
+ ;;
+ -ptx*)
+ vendor=sequent
+ ;;
+ -tpf*)
+ vendor=ibm
+ ;;
+ -vxsim* | -vxworks* | -windiss*)
+ vendor=wrs
+ ;;
+ -aux*)
+ vendor=apple
+ ;;
+ -hms*)
+ vendor=hitachi
+ ;;
+ -mpw* | -macos*)
+ vendor=apple
+ ;;
+ -*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+ vendor=atari
+ ;;
+ -vos*)
+ vendor=stratus
+ ;;
+ esac
+ basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
+ ;;
+esac
+
+echo $basic_machine$os
+exit
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
--- /dev/null
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the `clock_gettime' function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* "use syscall interface for clock_gettime" */
+/* #undef HAVE_CLOCK_SYSCALL */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the `epoll_ctl' function. */
+/* #undef HAVE_EPOLL_CTL */
+
+/* Define to 1 if you have the `eventfd' function. */
+/* #undef HAVE_EVENTFD */
+
+/* Define to 1 if you have the `inotify_init' function. */
+/* #undef HAVE_INOTIFY_INIT */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `kqueue' function. */
+/* #undef HAVE_KQUEUE */
+
+/* Define to 1 if you have the `m' library (-lm). */
+#define HAVE_LIBM 1
+
+/* Define to 1 if you have the `rt' library (-lrt). */
+/* #undef HAVE_LIBRT */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `nanosleep' function. */
+/* #undef HAVE_NANOSLEEP */
+
+/* Define to 1 if you have the `poll' function. */
+#define HAVE_POLL 1
+
+/* Define to 1 if you have the <poll.h> header file. */
+#define HAVE_POLL_H 1
+
+/* Define to 1 if you have the `port_create' function. */
+/* #undef HAVE_PORT_CREATE */
+
+/* Define to 1 if you have the <port.h> header file. */
+/* #undef HAVE_PORT_H */
+
+/* Define to 1 if you have the `select' function. */
+#define HAVE_SELECT 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/epoll.h> header file. */
+/* #undef HAVE_SYS_EPOLL_H */
+
+/* Define to 1 if you have the <sys/eventfd.h> header file. */
+/* #undef HAVE_SYS_EVENTFD_H */
+
+/* Define to 1 if you have the <sys/event.h> header file. */
+/* #undef HAVE_SYS_EVENT_H */
+
+/* Define to 1 if you have the <sys/inotify.h> header file. */
+/* #undef HAVE_SYS_INOTIFY_H */
+
+/* Define to 1 if you have the <sys/queue.h> header file. */
+#define HAVE_SYS_QUEUE_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Name of package */
+#define PACKAGE "libev"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "3.9"
--- /dev/null
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the `clock_gettime' function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* "use syscall interface for clock_gettime" */
+/* #undef HAVE_CLOCK_SYSCALL */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the `epoll_ctl' function. */
+/* #undef HAVE_EPOLL_CTL */
+
+/* Define to 1 if you have the `eventfd' function. */
+/* #undef HAVE_EVENTFD */
+
+/* Define to 1 if you have the `inotify_init' function. */
+/* #undef HAVE_INOTIFY_INIT */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `kqueue' function. */
+#define HAVE_KQUEUE 1
+
+/* Define to 1 if you have the `m' library (-lm). */
+#define HAVE_LIBM 1
+
+/* Define to 1 if you have the `rt' library (-lrt). */
+/* #undef HAVE_LIBRT */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `nanosleep' function. */
+/* #undef HAVE_NANOSLEEP */
+
+/* Define to 1 if you have the `poll' function. */
+#define HAVE_POLL 1
+
+/* Define to 1 if you have the <poll.h> header file. */
+#define HAVE_POLL_H 1
+
+/* Define to 1 if you have the `port_create' function. */
+/* #undef HAVE_PORT_CREATE */
+
+/* Define to 1 if you have the <port.h> header file. */
+/* #undef HAVE_PORT_H */
+
+/* Define to 1 if you have the `select' function. */
+#define HAVE_SELECT 1
+
+/* Define to 1 if you have the `signalfd' function. */
+/* #undef HAVE_SIGNALFD */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/epoll.h> header file. */
+/* #undef HAVE_SYS_EPOLL_H */
+
+/* Define to 1 if you have the <sys/eventfd.h> header file. */
+/* #undef HAVE_SYS_EVENTFD_H */
+
+/* Define to 1 if you have the <sys/event.h> header file. */
+#define HAVE_SYS_EVENT_H 1
+
+/* Define to 1 if you have the <sys/inotify.h> header file. */
+/* #undef HAVE_SYS_INOTIFY_H */
+
+/* Define to 1 if you have the <sys/queue.h> header file. */
+#define HAVE_SYS_QUEUE_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/signalfd.h> header file. */
+/* #undef HAVE_SYS_SIGNALFD_H */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Name of package */
+#define PACKAGE "libev"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "3.9"
--- /dev/null
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the `clock_gettime' function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* "use syscall interface for clock_gettime" */
+/* #undef HAVE_CLOCK_SYSCALL */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the `epoll_ctl' function. */
+/* #undef HAVE_EPOLL_CTL */
+
+/* Define to 1 if you have the `eventfd' function. */
+/* #undef HAVE_EVENTFD */
+
+/* Define to 1 if you have the `inotify_init' function. */
+/* #undef HAVE_INOTIFY_INIT */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `kqueue' function. */
+#define HAVE_KQUEUE 1
+
+/* Define to 1 if you have the `m' library (-lm). */
+#define HAVE_LIBM 1
+
+/* Define to 1 if you have the `rt' library (-lrt). */
+/* #undef HAVE_LIBRT */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `nanosleep' function. */
+/* #undef HAVE_NANOSLEEP */
+
+/* Define to 1 if you have the `poll' function. */
+#define HAVE_POLL 1
+
+/* Define to 1 if you have the <poll.h> header file. */
+#define HAVE_POLL_H 1
+
+/* Define to 1 if you have the `port_create' function. */
+/* #undef HAVE_PORT_CREATE */
+
+/* Define to 1 if you have the <port.h> header file. */
+/* #undef HAVE_PORT_H */
+
+/* Define to 1 if you have the `select' function. */
+#define HAVE_SELECT 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/epoll.h> header file. */
+/* #undef HAVE_SYS_EPOLL_H */
+
+/* Define to 1 if you have the <sys/eventfd.h> header file. */
+/* #undef HAVE_SYS_EVENTFD_H */
+
+/* Define to 1 if you have the <sys/event.h> header file. */
+#define HAVE_SYS_EVENT_H 1
+
+/* Define to 1 if you have the <sys/inotify.h> header file. */
+/* #undef HAVE_SYS_INOTIFY_H */
+
+/* Define to 1 if you have the <sys/queue.h> header file. */
+#define HAVE_SYS_QUEUE_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Name of package */
+#define PACKAGE "libev"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "3.9"
--- /dev/null
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+#include <linux/version.h>
+
+#define LINUX_VERSION_CODE_FOR(major, minor, patch) (((major & 255) >> 16) | ((minor & 255) >> 8) | (patch & 255))
+#define LINUX_VERSION_AT_LEAST(major, minor, patch) (LINUX_VERSION_CODE_FOR(major, minor, patch) >= LINUX_VERSION_CODE)
+
+/* Define to 1 if you have the `clock_gettime' function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* "use syscall interface for clock_gettime" */
+#define HAVE_CLOCK_SYSCALL 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the `epoll_ctl' function. */
+#define HAVE_EPOLL_CTL 1
+
+/* Define to 1 if you have the `eventfd' function. */
+#define HAVE_EVENTFD LINUX_VERSION_AT_LEAST(2, 6, 22)
+
+/* Define to 1 if you have the `inotify_init' function. */
+#define HAVE_INOTIFY_INIT LINUX_VERSION_AT_LEAST(2, 6, 13)
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `kqueue' function. */
+/* #undef HAVE_KQUEUE */
+
+/* Define to 1 if you have the `m' library (-lm). */
+#define HAVE_LIBM 1
+
+/* Define to 1 if you have the `rt' library (-lrt). */
+/* #undef HAVE_LIBRT */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `nanosleep' function. */
+/* #undef HAVE_NANOSLEEP */
+
+/* Define to 1 if you have the `poll' function. */
+#define HAVE_POLL 1
+
+/* Define to 1 if you have the <poll.h> header file. */
+#define HAVE_POLL_H 1
+
+/* Define to 1 if you have the `port_create' function. */
+/* #undef HAVE_PORT_CREATE */
+
+/* Define to 1 if you have the <port.h> header file. */
+/* #undef HAVE_PORT_H */
+
+/* Define to 1 if you have the `select' function. */
+#define HAVE_SELECT 1
+
+/* Define to 1 if you have the `signalfd' function. */
+#define HAVE_SIGNALFD LINUX_VERSION_AT_LEAST(2, 6, 22)
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/epoll.h> header file. */
+#define HAVE_SYS_EPOLL_H 1
+
+/* Define to 1 if you have the <sys/eventfd.h> header file. */
+#define HAVE_SYS_EVENTFD_H 1
+
+/* Define to 1 if you have the <sys/event.h> header file. */
+/* #undef HAVE_SYS_EVENT_H */
+
+/* Define to 1 if you have the <sys/inotify.h> header file. */
+#define HAVE_SYS_INOTIFY_H 1
+
+/* Define to 1 if you have the <sys/queue.h> header file. */
+#define HAVE_SYS_QUEUE_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/signalfd.h> header file. */
+#define HAVE_SYS_SIGNALFD_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Name of package */
+#define PACKAGE "libev"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "3.9"
--- /dev/null
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the `clock_gettime' function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* "use syscall interface for clock_gettime" */
+/* #undef HAVE_CLOCK_SYSCALL */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the `epoll_ctl' function. */
+/* #undef HAVE_EPOLL_CTL */
+
+/* Define to 1 if you have the `eventfd' function. */
+/* #undef HAVE_EVENTFD */
+
+/* Define to 1 if you have the `inotify_init' function. */
+/* #undef HAVE_INOTIFY_INIT */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `kqueue' function. */
+/* #undef HAVE_KQUEUE */
+
+/* Define to 1 if you have the `m' library (-lm). */
+#define HAVE_LIBM 1
+
+/* Define to 1 if you have the `rt' library (-lrt). */
+/* #undef HAVE_LIBRT */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `nanosleep' function. */
+/* #undef HAVE_NANOSLEEP */
+
+/* Define to 1 if you have the `poll' function. */
+#define HAVE_POLL 1
+
+/* Define to 1 if you have the <poll.h> header file. */
+#define HAVE_POLL_H 1
+
+/* Define to 1 if you have the `port_create' function. */
+#define HAVE_PORT_CREATE 1
+
+/* Define to 1 if you have the <port.h> header file. */
+#define HAVE_PORT_H 1
+
+/* Define to 1 if you have the `select' function. */
+#define HAVE_SELECT 1
+
+/* Define to 1 if you have the `signalfd' function. */
+/* #undef HAVE_SIGNALFD */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/epoll.h> header file. */
+/* #undef HAVE_SYS_EPOLL_H */
+
+/* Define to 1 if you have the <sys/eventfd.h> header file. */
+/* #undef HAVE_SYS_EVENTFD_H */
+
+/* Define to 1 if you have the <sys/event.h> header file. */
+/* #undef HAVE_SYS_EVENT_H */
+
+/* Define to 1 if you have the <sys/inotify.h> header file. */
+/* #undef HAVE_SYS_INOTIFY_H */
+
+/* Define to 1 if you have the <sys/queue.h> header file. */
+#define HAVE_SYS_QUEUE_H 1
+
+/* Define to 1 if you have the <sys/select.h> header file. */
+#define HAVE_SYS_SELECT_H 1
+
+/* Define to 1 if you have the <sys/signalfd.h> header file. */
+/* #undef HAVE_SYS_SIGNALFD_H */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Name of package */
+#define PACKAGE "libev"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME ""
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING ""
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION ""
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "3.9"
--- /dev/null
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.67.
+#
+#
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
+# Foundation, Inc.
+#
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+ emulate sh
+ NULLCMD=:
+ # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '${1+"$@"}'='"$@"'
+ setopt NO_GLOB_SUBST
+else
+ case `(set -o) 2>/dev/null` in #(
+ *posix*) :
+ set -o posix ;; #(
+ *) :
+ ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+ && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='print -r --'
+ as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='printf %s\n'
+ as_echo_n='printf %s'
+else
+ if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+ as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+ as_echo_n='/usr/ucb/echo -n'
+ else
+ as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+ as_echo_n_body='eval
+ arg=$1;
+ case $arg in #(
+ *"$as_nl"*)
+ expr "X$arg" : "X\\(.*\\)$as_nl";
+ arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+ esac;
+ expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+ '
+ export as_echo_n_body
+ as_echo_n='sh -c $as_echo_n_body as_echo'
+ fi
+ export as_echo_body
+ as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+ PATH_SEPARATOR=:
+ (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+ (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+ PATH_SEPARATOR=';'
+ }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order. Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" "" $as_nl"
+
+# Find who we are. Look in the path if we contain no directory separator.
+case $0 in #((
+ *[\\/]* ) as_myself=$0 ;;
+ *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+ done
+IFS=$as_save_IFS
+
+ ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+ as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+ $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+ exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there. '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+ && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+if test "x$CONFIG_SHELL" = x; then
+ as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
+ emulate sh
+ NULLCMD=:
+ # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '\${1+\"\$@\"}'='\"\$@\"'
+ setopt NO_GLOB_SUBST
+else
+ case \`(set -o) 2>/dev/null\` in #(
+ *posix*) :
+ set -o posix ;; #(
+ *) :
+ ;;
+esac
+fi
+"
+ as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
+
+else
+ exitcode=1; echo positional parameters were not saved.
+fi
+test x\$exitcode = x0 || exit 1"
+ as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+ as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+ eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
+ test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
+test \$(( 1 + 1 )) = 2 || exit 1"
+ if (eval "$as_required") 2>/dev/null; then :
+ as_have_required=yes
+else
+ as_have_required=no
+fi
+ if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :
+
+else
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ as_found=:
+ case $as_dir in #(
+ /*)
+ for as_base in sh bash ksh sh5; do
+ # Try only shells that exist, to save several forks.
+ as_shell=$as_dir/$as_base
+ if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+ { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :
+ CONFIG_SHELL=$as_shell as_have_required=yes
+ if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :
+ break 2
+fi
+fi
+ done;;
+ esac
+ as_found=false
+done
+$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+ { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :
+ CONFIG_SHELL=$SHELL as_have_required=yes
+fi; }
+IFS=$as_save_IFS
+
+
+ if test "x$CONFIG_SHELL" != x; then :
+ # We cannot yet assume a decent shell, so we have to provide a
+ # neutralization value for shells without unset; and this also
+ # works around shells that cannot unset nonexistent variables.
+ BASH_ENV=/dev/null
+ ENV=/dev/null
+ (unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+ export CONFIG_SHELL
+ exec "$CONFIG_SHELL" "$as_myself" ${1+"$@"}
+fi
+
+ if test x$as_have_required = xno; then :
+ $as_echo "$0: This script requires a shell more modern than all"
+ $as_echo "$0: the shells that I found on your system."
+ if test x${ZSH_VERSION+set} = xset ; then
+ $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+ $as_echo "$0: be upgraded to zsh 4.3.4 or later."
+ else
+ $as_echo "$0: Please tell bug-autoconf@gnu.org about your system,
+$0: including any error possibly output before this
+$0: message. Then install a modern shell, or manually run
+$0: the script under such a shell if you do have one."
+ fi
+ exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+ { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+ return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+ set +e
+ as_fn_set_status $1
+ exit $1
+} # as_fn_exit
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+ case $as_dir in #(
+ -*) as_dir=./$as_dir;;
+ esac
+ test -d "$as_dir" || eval $as_mkdir_p || {
+ as_dirs=
+ while :; do
+ case $as_dir in #(
+ *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+ *) as_qdir=$as_dir;;
+ esac
+ as_dirs="'$as_qdir' $as_dirs"
+ as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$as_dir" : 'X\(//\)[^/]' \| \
+ X"$as_dir" : 'X\(//\)$' \| \
+ X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ test -d "$as_dir" && break
+ done
+ test -z "$as_dirs" || eval "mkdir $as_dirs"
+ } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+ eval 'as_fn_append ()
+ {
+ eval $1+=\$2
+ }'
+else
+ as_fn_append ()
+ {
+ eval $1=\$$1\$2
+ }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+ eval 'as_fn_arith ()
+ {
+ as_val=$(( $* ))
+ }'
+else
+ as_fn_arith ()
+ {
+ as_val=`expr "$@" || test $? -eq 1`
+ }
+fi # as_fn_arith
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+ as_status=$1; test $as_status -eq 0 && as_status=1
+ if test "$4"; then
+ as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+ fi
+ $as_echo "$as_me: error: $2" >&2
+ as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+ test "X`expr 00001 : '.*\(...\)'`" = X001; then
+ as_expr=expr
+else
+ as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+ as_basename=basename
+else
+ as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+ as_dirname=dirname
+else
+ as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+ X"$0" : 'X\(//\)$' \| \
+ X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+ sed '/^.*\/\([^/][^/]*\)\/*$/{
+ s//\1/
+ q
+ }
+ /^X\/\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\/\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+ as_lineno_1=$LINENO as_lineno_1a=$LINENO
+ as_lineno_2=$LINENO as_lineno_2a=$LINENO
+ eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+ test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+ # Blame Lee E. McMahon (1931-1989) for sed's syntax. :-)
+ sed -n '
+ p
+ /[$]LINENO/=
+ ' <$as_myself |
+ sed '
+ s/[$]LINENO.*/&-/
+ t lineno
+ b
+ :lineno
+ N
+ :loop
+ s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+ t loop
+ s/-\n.*//
+ ' >$as_me.lineno &&
+ chmod +x "$as_me.lineno" ||
+ { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+ # Don't try to exec as it changes $[0], causing all sort of problems
+ # (the dirname of $[0] is not the place where we might find the
+ # original and so on. Autoconf is especially sensitive to this).
+ . "./$as_me.lineno"
+ # Exit status is that of the last command.
+ exit
+}
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+ case `echo 'xy\c'` in
+ *c*) ECHO_T=' ';; # ECHO_T is single tab character.
+ xy) ECHO_C='\c';;
+ *) echo `echo ksh88 bug on AIX 6.1` > /dev/null
+ ECHO_T=' ';;
+ esac;;
+*)
+ ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+ rm -f conf$$.dir/conf$$.file
+else
+ rm -f conf$$.dir
+ mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+ if ln -s conf$$.file conf$$ 2>/dev/null; then
+ as_ln_s='ln -s'
+ # ... but there are two gotchas:
+ # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+ # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+ # In both cases, we have to default to `cp -p'.
+ ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+ as_ln_s='cp -p'
+ elif ln conf$$.file conf$$ 2>/dev/null; then
+ as_ln_s=ln
+ else
+ as_ln_s='cp -p'
+ fi
+else
+ as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
+ as_mkdir_p='mkdir -p "$as_dir"'
+else
+ test -d ./-p && rmdir ./-p
+ as_mkdir_p=false
+fi
+
+if test -x / >/dev/null 2>&1; then
+ as_test_x='test -x'
+else
+ if ls -dL / >/dev/null 2>&1; then
+ as_ls_L_option=L
+ else
+ as_ls_L_option=
+ fi
+ as_test_x='
+ eval sh -c '\''
+ if test -d "$1"; then
+ test -d "$1/.";
+ else
+ case $1 in #(
+ -*)set "./$1";;
+ esac;
+ case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+ ???[sx]*):;;*)false;;esac;fi
+ '\'' sh
+ '
+fi
+as_executable_p=$as_test_x
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+
+# Check that we are running under the correct shell.
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+case X$lt_ECHO in
+X*--fallback-echo)
+ # Remove one level of quotation (which was required for Make).
+ ECHO=`echo "$lt_ECHO" | sed 's,\\\\\$\\$0,'$0','`
+ ;;
+esac
+
+ECHO=${lt_ECHO-echo}
+if test "X$1" = X--no-reexec; then
+ # Discard the --no-reexec flag, and continue.
+ shift
+elif test "X$1" = X--fallback-echo; then
+ # Avoid inline document here, it may be left over
+ :
+elif test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' ; then
+ # Yippee, $ECHO works!
+ :
+else
+ # Restart under the correct shell.
+ exec $SHELL "$0" --no-reexec ${1+"$@"}
+fi
+
+if test "X$1" = X--fallback-echo; then
+ # used as fallback echo
+ shift
+ cat <<_LT_EOF
+$*
+_LT_EOF
+ exit 0
+fi
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+if test -z "$lt_ECHO"; then
+ if test "X${echo_test_string+set}" != Xset; then
+ # find a string as large as possible, as long as the shell can cope with it
+ for cmd in 'sed 50q "$0"' 'sed 20q "$0"' 'sed 10q "$0"' 'sed 2q "$0"' 'echo test'; do
+ # expected sizes: less than 2Kb, 1Kb, 512 bytes, 16 bytes, ...
+ if { echo_test_string=`eval $cmd`; } 2>/dev/null &&
+ { test "X$echo_test_string" = "X$echo_test_string"; } 2>/dev/null
+ then
+ break
+ fi
+ done
+ fi
+
+ if test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ $ECHO "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ :
+ else
+ # The Solaris, AIX, and Digital Unix default echo programs unquote
+ # backslashes. This makes it impossible to quote backslashes using
+ # echo "$something" | sed 's/\\/\\\\/g'
+ #
+ # So, first we look for a working echo in the user's PATH.
+
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for dir in $PATH /usr/ucb; do
+ IFS="$lt_save_ifs"
+ if (test -f $dir/echo || test -f $dir/echo$ac_exeext) &&
+ test "X`($dir/echo '\t') 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`($dir/echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ ECHO="$dir/echo"
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+
+ if test "X$ECHO" = Xecho; then
+ # We didn't find a better echo, so look for alternatives.
+ if test "X`{ print -r '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ print -r "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ # This shell has a builtin print -r that does the trick.
+ ECHO='print -r'
+ elif { test -f /bin/ksh || test -f /bin/ksh$ac_exeext; } &&
+ test "X$CONFIG_SHELL" != X/bin/ksh; then
+ # If we have ksh, try running configure again with it.
+ ORIGINAL_CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+ export ORIGINAL_CONFIG_SHELL
+ CONFIG_SHELL=/bin/ksh
+ export CONFIG_SHELL
+ exec $CONFIG_SHELL "$0" --no-reexec ${1+"$@"}
+ else
+ # Try using printf.
+ ECHO='printf %s\n'
+ if test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t' &&
+ echo_testing_string=`{ $ECHO "$echo_test_string"; } 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ # Cool, printf works
+ :
+ elif echo_testing_string=`($ORIGINAL_CONFIG_SHELL "$0" --fallback-echo '\t') 2>/dev/null` &&
+ test "X$echo_testing_string" = 'X\t' &&
+ echo_testing_string=`($ORIGINAL_CONFIG_SHELL "$0" --fallback-echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ CONFIG_SHELL=$ORIGINAL_CONFIG_SHELL
+ export CONFIG_SHELL
+ SHELL="$CONFIG_SHELL"
+ export SHELL
+ ECHO="$CONFIG_SHELL $0 --fallback-echo"
+ elif echo_testing_string=`($CONFIG_SHELL "$0" --fallback-echo '\t') 2>/dev/null` &&
+ test "X$echo_testing_string" = 'X\t' &&
+ echo_testing_string=`($CONFIG_SHELL "$0" --fallback-echo "$echo_test_string") 2>/dev/null` &&
+ test "X$echo_testing_string" = "X$echo_test_string"; then
+ ECHO="$CONFIG_SHELL $0 --fallback-echo"
+ else
+ # maybe with a smaller string...
+ prev=:
+
+ for cmd in 'echo test' 'sed 2q "$0"' 'sed 10q "$0"' 'sed 20q "$0"' 'sed 50q "$0"'; do
+ if { test "X$echo_test_string" = "X`eval $cmd`"; } 2>/dev/null
+ then
+ break
+ fi
+ prev="$cmd"
+ done
+
+ if test "$prev" != 'sed 50q "$0"'; then
+ echo_test_string=`eval $prev`
+ export echo_test_string
+ exec ${ORIGINAL_CONFIG_SHELL-${CONFIG_SHELL-/bin/sh}} "$0" ${1+"$@"}
+ else
+ # Oops. We lost completely, so just stick with echo.
+ ECHO=echo
+ fi
+ fi
+ fi
+ fi
+ fi
+fi
+
+# Copy echo and quote the copy suitably for passing to libtool from
+# the Makefile, instead of quoting the original, which is used later.
+lt_ECHO=$ECHO
+if test "X$lt_ECHO" = "X$CONFIG_SHELL $0 --fallback-echo"; then
+ lt_ECHO="$CONFIG_SHELL \\\$\$0 --fallback-echo"
+fi
+
+
+
+
+test -n "$DJDIR" || exec 7<&0 </dev/null
+exec 6>&1
+
+# Name of the host.
+# hostname on some systems (SVR3.2, old GNU/Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_clean_files=
+ac_config_libobj_dir=.
+LIBOBJS=
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+
+# Identity of this package.
+PACKAGE_NAME=
+PACKAGE_TARNAME=
+PACKAGE_VERSION=
+PACKAGE_STRING=
+PACKAGE_BUGREPORT=
+PACKAGE_URL=
+
+ac_unique_file="ev_epoll.c"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stdio.h>
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_STRING_H
+# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
+# include <memory.h>
+# endif
+# include <string.h>
+#endif
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_subst_vars='am__EXEEXT_FALSE
+am__EXEEXT_TRUE
+LTLIBOBJS
+LIBOBJS
+CPP
+OTOOL64
+OTOOL
+LIPO
+NMEDIT
+DSYMUTIL
+lt_ECHO
+RANLIB
+AR
+OBJDUMP
+LN_S
+NM
+ac_ct_DUMPBIN
+DUMPBIN
+LD
+FGREP
+EGREP
+GREP
+SED
+am__fastdepCC_FALSE
+am__fastdepCC_TRUE
+CCDEPMODE
+AMDEPBACKSLASH
+AMDEP_FALSE
+AMDEP_TRUE
+am__quote
+am__include
+DEPDIR
+OBJEXT
+EXEEXT
+ac_ct_CC
+CPPFLAGS
+LDFLAGS
+CFLAGS
+CC
+host_os
+host_vendor
+host_cpu
+host
+build_os
+build_vendor
+build_cpu
+build
+LIBTOOL
+MAINT
+MAINTAINER_MODE_FALSE
+MAINTAINER_MODE_TRUE
+am__untar
+am__tar
+AMTAR
+am__leading_dot
+SET_MAKE
+AWK
+mkdir_p
+MKDIR_P
+INSTALL_STRIP_PROGRAM
+STRIP
+install_sh
+MAKEINFO
+AUTOHEADER
+AUTOMAKE
+AUTOCONF
+ACLOCAL
+VERSION
+PACKAGE
+CYGPATH_W
+am__isrc
+INSTALL_DATA
+INSTALL_SCRIPT
+INSTALL_PROGRAM
+target_alias
+host_alias
+build_alias
+LIBS
+ECHO_T
+ECHO_N
+ECHO_C
+DEFS
+mandir
+localedir
+libdir
+psdir
+pdfdir
+dvidir
+htmldir
+infodir
+docdir
+oldincludedir
+includedir
+localstatedir
+sharedstatedir
+sysconfdir
+datadir
+datarootdir
+libexecdir
+sbindir
+bindir
+program_transform_name
+prefix
+exec_prefix
+PACKAGE_URL
+PACKAGE_BUGREPORT
+PACKAGE_STRING
+PACKAGE_VERSION
+PACKAGE_TARNAME
+PACKAGE_NAME
+PATH_SEPARATOR
+SHELL'
+ac_subst_files=''
+ac_user_opts='
+enable_option_checking
+enable_maintainer_mode
+enable_shared
+enable_static
+with_pic
+enable_fast_install
+enable_dependency_tracking
+with_gnu_ld
+enable_libtool_lock
+'
+ ac_precious_vars='build_alias
+host_alias
+target_alias
+CC
+CFLAGS
+LDFLAGS
+LIBS
+CPPFLAGS
+CPP'
+
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+ac_unrecognized_opts=
+ac_unrecognized_sep=
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+# (The list follows the same order as the GNU Coding Standards.)
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datarootdir='${prefix}/share'
+datadir='${datarootdir}'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+docdir='${datarootdir}/doc/${PACKAGE}'
+infodir='${datarootdir}/info'
+htmldir='${docdir}'
+dvidir='${docdir}'
+pdfdir='${docdir}'
+psdir='${docdir}'
+libdir='${exec_prefix}/lib'
+localedir='${datarootdir}/locale'
+mandir='${datarootdir}/man'
+
+ac_prev=
+ac_dashdash=
+for ac_option
+do
+ # If the previous option needs an argument, assign it.
+ if test -n "$ac_prev"; then
+ eval $ac_prev=\$ac_option
+ ac_prev=
+ continue
+ fi
+
+ case $ac_option in
+ *=?*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+ *=) ac_optarg= ;;
+ *) ac_optarg=yes ;;
+ esac
+
+ # Accept the important Cygnus configure options, so we can diagnose typos.
+
+ case $ac_dashdash$ac_option in
+ --)
+ ac_dashdash=yes ;;
+
+ -bindir | --bindir | --bindi | --bind | --bin | --bi)
+ ac_prev=bindir ;;
+ -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+ bindir=$ac_optarg ;;
+
+ -build | --build | --buil | --bui | --bu)
+ ac_prev=build_alias ;;
+ -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+ build_alias=$ac_optarg ;;
+
+ -cache-file | --cache-file | --cache-fil | --cache-fi \
+ | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+ ac_prev=cache_file ;;
+ -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+ | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+ cache_file=$ac_optarg ;;
+
+ --config-cache | -C)
+ cache_file=config.cache ;;
+
+ -datadir | --datadir | --datadi | --datad)
+ ac_prev=datadir ;;
+ -datadir=* | --datadir=* | --datadi=* | --datad=*)
+ datadir=$ac_optarg ;;
+
+ -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
+ | --dataroo | --dataro | --datar)
+ ac_prev=datarootdir ;;
+ -datarootdir=* | --datarootdir=* | --datarootdi=* | --datarootd=* \
+ | --dataroot=* | --dataroo=* | --dataro=* | --datar=*)
+ datarootdir=$ac_optarg ;;
+
+ -disable-* | --disable-*)
+ ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+ # Reject names that are not valid shell variable names.
+ expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+ as_fn_error $? "invalid feature name: $ac_useropt"
+ ac_useropt_orig=$ac_useropt
+ ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+ case $ac_user_opts in
+ *"
+"enable_$ac_useropt"
+"*) ;;
+ *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--disable-$ac_useropt_orig"
+ ac_unrecognized_sep=', ';;
+ esac
+ eval enable_$ac_useropt=no ;;
+
+ -docdir | --docdir | --docdi | --doc | --do)
+ ac_prev=docdir ;;
+ -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
+ docdir=$ac_optarg ;;
+
+ -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
+ ac_prev=dvidir ;;
+ -dvidir=* | --dvidir=* | --dvidi=* | --dvid=* | --dvi=* | --dv=*)
+ dvidir=$ac_optarg ;;
+
+ -enable-* | --enable-*)
+ ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+ # Reject names that are not valid shell variable names.
+ expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+ as_fn_error $? "invalid feature name: $ac_useropt"
+ ac_useropt_orig=$ac_useropt
+ ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+ case $ac_user_opts in
+ *"
+"enable_$ac_useropt"
+"*) ;;
+ *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--enable-$ac_useropt_orig"
+ ac_unrecognized_sep=', ';;
+ esac
+ eval enable_$ac_useropt=\$ac_optarg ;;
+
+ -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+ | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+ | --exec | --exe | --ex)
+ ac_prev=exec_prefix ;;
+ -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+ | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+ | --exec=* | --exe=* | --ex=*)
+ exec_prefix=$ac_optarg ;;
+
+ -gas | --gas | --ga | --g)
+ # Obsolete; use --with-gas.
+ with_gas=yes ;;
+
+ -help | --help | --hel | --he | -h)
+ ac_init_help=long ;;
+ -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+ ac_init_help=recursive ;;
+ -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+ ac_init_help=short ;;
+
+ -host | --host | --hos | --ho)
+ ac_prev=host_alias ;;
+ -host=* | --host=* | --hos=* | --ho=*)
+ host_alias=$ac_optarg ;;
+
+ -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
+ ac_prev=htmldir ;;
+ -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
+ | --ht=*)
+ htmldir=$ac_optarg ;;
+
+ -includedir | --includedir | --includedi | --included | --include \
+ | --includ | --inclu | --incl | --inc)
+ ac_prev=includedir ;;
+ -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+ | --includ=* | --inclu=* | --incl=* | --inc=*)
+ includedir=$ac_optarg ;;
+
+ -infodir | --infodir | --infodi | --infod | --info | --inf)
+ ac_prev=infodir ;;
+ -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+ infodir=$ac_optarg ;;
+
+ -libdir | --libdir | --libdi | --libd)
+ ac_prev=libdir ;;
+ -libdir=* | --libdir=* | --libdi=* | --libd=*)
+ libdir=$ac_optarg ;;
+
+ -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+ | --libexe | --libex | --libe)
+ ac_prev=libexecdir ;;
+ -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+ | --libexe=* | --libex=* | --libe=*)
+ libexecdir=$ac_optarg ;;
+
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+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_retval=1
+fi
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_compile
+
+# ac_fn_c_try_link LINENO
+# -----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_link ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ rm -f conftest.$ac_objext conftest$ac_exeext
+ if { { ac_try="$ac_link"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link") 2>conftest.err
+ ac_status=$?
+ if test -s conftest.err; then
+ grep -v '^ *+' conftest.err >conftest.er1
+ cat conftest.er1 >&5
+ mv -f conftest.er1 conftest.err
+ fi
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && {
+ test -z "$ac_c_werror_flag" ||
+ test ! -s conftest.err
+ } && test -s conftest$ac_exeext && {
+ test "$cross_compiling" = yes ||
+ $as_test_x conftest$ac_exeext
+ }; then :
+ ac_retval=0
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_retval=1
+fi
+ # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+ # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+ # interfere with the next link command; also delete a directory that is
+ # left behind by Apple's compiler. We do this before executing the actions.
+ rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_link
+
+# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists and can be compiled using the include files in
+# INCLUDES, setting the cache variable VAR accordingly.
+ac_fn_c_check_header_compile ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval "test \"\${$3+set}\"" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ eval "$3=yes"
+else
+ eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+
+} # ac_fn_c_check_header_compile
+
+# ac_fn_c_try_cpp LINENO
+# ----------------------
+# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_cpp ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ if { { ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
+ ac_status=$?
+ if test -s conftest.err; then
+ grep -v '^ *+' conftest.err >conftest.er1
+ cat conftest.er1 >&5
+ mv -f conftest.er1 conftest.err
+ fi
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } > conftest.i && {
+ test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+ test ! -s conftest.err
+ }; then :
+ ac_retval=0
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_retval=1
+fi
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_cpp
+
+# ac_fn_c_try_run LINENO
+# ----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
+# that executables *can* be run.
+ac_fn_c_try_run ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ if { { ac_try="$ac_link"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
+ { { case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_try") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }; then :
+ ac_retval=0
+else
+ $as_echo "$as_me: program exited with status $ac_status" >&5
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_retval=$ac_status
+fi
+ rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+ as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_run
+
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval "test \"\${$3+set}\"" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
+ For example, HP-UX 11i <limits.h> declares gettimeofday. */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char $2 (); below.
+ Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+ <limits.h> exists even on freestanding compilers. */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $2
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char $2 ();
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main ()
+{
+return $2 ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ eval "$3=yes"
+else
+ eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+
+} # ac_fn_c_check_func
+
+# ac_fn_c_check_header_mongrel LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists, giving a warning if it cannot be compiled using
+# the include files in INCLUDES and setting the cache variable VAR
+# accordingly.
+ac_fn_c_check_header_mongrel ()
+{
+ as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ if eval "test \"\${$3+set}\"" = set; then :
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval "test \"\${$3+set}\"" = set; then :
+ $as_echo_n "(cached) " >&6
+fi
+eval ac_res=\$$3
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+else
+ # Is the header compilable?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 usability" >&5
+$as_echo_n "checking $2 usability... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_header_compiler=yes
+else
+ ac_header_compiler=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_compiler" >&5
+$as_echo "$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 presence" >&5
+$as_echo_n "checking $2 presence... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <$2>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ ac_header_preproc=yes
+else
+ ac_header_preproc=no
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_preproc" >&5
+$as_echo "$ac_header_preproc" >&6; }
+
+# So? What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in #((
+ yes:no: )
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&5
+$as_echo "$as_me: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+ ;;
+ no:yes:* )
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: present but cannot be compiled" >&5
+$as_echo "$as_me: WARNING: $2: present but cannot be compiled" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: check for missing prerequisite headers?" >&5
+$as_echo "$as_me: WARNING: $2: check for missing prerequisite headers?" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: see the Autoconf documentation" >&5
+$as_echo "$as_me: WARNING: $2: see the Autoconf documentation" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: section \"Present But Cannot Be Compiled\"" >&5
+$as_echo "$as_me: WARNING: $2: section \"Present But Cannot Be Compiled\"" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+ ;;
+esac
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval "test \"\${$3+set}\"" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ eval "$3=\$ac_header_compiler"
+fi
+eval ac_res=\$$3
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+fi
+ eval $as_lineno_stack; test "x$as_lineno_stack" = x && { as_lineno=; unset as_lineno;}
+
+} # ac_fn_c_check_header_mongrel
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by $as_me, which was
+generated by GNU Autoconf 2.67. Invocation command line was
+
+ $ $0 $@
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X = `(/bin/uname -X) 2>/dev/null || echo unknown`
+
+/bin/arch = `(/bin/arch) 2>/dev/null || echo unknown`
+/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo = `(/usr/bin/hostinfo) 2>/dev/null || echo unknown`
+/bin/machine = `(/bin/machine) 2>/dev/null || echo unknown`
+/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null || echo unknown`
+/bin/universe = `(/bin/universe) 2>/dev/null || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ $as_echo "PATH: $as_dir"
+ done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+ for ac_arg
+ do
+ case $ac_arg in
+ -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+ | -silent | --silent | --silen | --sile | --sil)
+ continue ;;
+ *\'*)
+ ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ esac
+ case $ac_pass in
+ 1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+ 2)
+ as_fn_append ac_configure_args1 " '$ac_arg'"
+ if test $ac_must_keep_next = true; then
+ ac_must_keep_next=false # Got value, back to normal.
+ else
+ case $ac_arg in
+ *=* | --config-cache | -C | -disable-* | --disable-* \
+ | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+ | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+ | -with-* | --with-* | -without-* | --without-* | --x)
+ case "$ac_configure_args0 " in
+ "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+ esac
+ ;;
+ -* ) ac_must_keep_next=true ;;
+ esac
+ fi
+ as_fn_append ac_configure_args " '$ac_arg'"
+ ;;
+ esac
+ done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log. We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+ # Save into config.log some information that might help in debugging.
+ {
+ echo
+
+ $as_echo "## ---------------- ##
+## Cache variables. ##
+## ---------------- ##"
+ echo
+ # The following way of writing the cache mishandles newlines in values,
+(
+ for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+ eval ac_val=\$$ac_var
+ case $ac_val in #(
+ *${as_nl}*)
+ case $ac_var in #(
+ *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+ esac
+ case $ac_var in #(
+ _ | IFS | as_nl) ;; #(
+ BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+ *) { eval $ac_var=; unset $ac_var;} ;;
+ esac ;;
+ esac
+ done
+ (set) 2>&1 |
+ case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+ *${as_nl}ac_space=\ *)
+ sed -n \
+ "s/'\''/'\''\\\\'\'''\''/g;
+ s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+ ;; #(
+ *)
+ sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+ ;;
+ esac |
+ sort
+)
+ echo
+
+ $as_echo "## ----------------- ##
+## Output variables. ##
+## ----------------- ##"
+ echo
+ for ac_var in $ac_subst_vars
+ do
+ eval ac_val=\$$ac_var
+ case $ac_val in
+ *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+ esac
+ $as_echo "$ac_var='\''$ac_val'\''"
+ done | sort
+ echo
+
+ if test -n "$ac_subst_files"; then
+ $as_echo "## ------------------- ##
+## File substitutions. ##
+## ------------------- ##"
+ echo
+ for ac_var in $ac_subst_files
+ do
+ eval ac_val=\$$ac_var
+ case $ac_val in
+ *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+ esac
+ $as_echo "$ac_var='\''$ac_val'\''"
+ done | sort
+ echo
+ fi
+
+ if test -s confdefs.h; then
+ $as_echo "## ----------- ##
+## confdefs.h. ##
+## ----------- ##"
+ echo
+ cat confdefs.h
+ echo
+ fi
+ test "$ac_signal" != 0 &&
+ $as_echo "$as_me: caught signal $ac_signal"
+ $as_echo "$as_me: exit $exit_status"
+ } >&5
+ rm -f core *.core core.conftest.* &&
+ rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+ exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+ trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+$as_echo "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_URL "$PACKAGE_URL"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+ac_site_file1=NONE
+ac_site_file2=NONE
+if test -n "$CONFIG_SITE"; then
+ # We do not want a PATH search for config.site.
+ case $CONFIG_SITE in #((
+ -*) ac_site_file1=./$CONFIG_SITE;;
+ */*) ac_site_file1=$CONFIG_SITE;;
+ *) ac_site_file1=./$CONFIG_SITE;;
+ esac
+elif test "x$prefix" != xNONE; then
+ ac_site_file1=$prefix/share/config.site
+ ac_site_file2=$prefix/etc/config.site
+else
+ ac_site_file1=$ac_default_prefix/share/config.site
+ ac_site_file2=$ac_default_prefix/etc/config.site
+fi
+for ac_site_file in "$ac_site_file1" "$ac_site_file2"
+do
+ test "x$ac_site_file" = xNONE && continue
+ if test /dev/null != "$ac_site_file" && test -r "$ac_site_file"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+$as_echo "$as_me: loading site script $ac_site_file" >&6;}
+ sed 's/^/| /' "$ac_site_file" >&5
+ . "$ac_site_file" \
+ || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "failed to load site script $ac_site_file
+See \`config.log' for more details" "$LINENO" 5 ; }
+ fi
+done
+
+if test -r "$cache_file"; then
+ # Some versions of bash will fail to source /dev/null (special files
+ # actually), so we avoid doing that. DJGPP emulates it as a regular file.
+ if test /dev/null != "$cache_file" && test -f "$cache_file"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+$as_echo "$as_me: loading cache $cache_file" >&6;}
+ case $cache_file in
+ [\\/]* | ?:[\\/]* ) . "$cache_file";;
+ *) . "./$cache_file";;
+ esac
+ fi
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+$as_echo "$as_me: creating cache $cache_file" >&6;}
+ >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+ eval ac_old_set=\$ac_cv_env_${ac_var}_set
+ eval ac_new_set=\$ac_env_${ac_var}_set
+ eval ac_old_val=\$ac_cv_env_${ac_var}_value
+ eval ac_new_val=\$ac_env_${ac_var}_value
+ case $ac_old_set,$ac_new_set in
+ set,)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+ ac_cache_corrupted=: ;;
+ ,set)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+ ac_cache_corrupted=: ;;
+ ,);;
+ *)
+ if test "x$ac_old_val" != "x$ac_new_val"; then
+ # differences in whitespace do not lead to failure.
+ ac_old_val_w=`echo x $ac_old_val`
+ ac_new_val_w=`echo x $ac_new_val`
+ if test "$ac_old_val_w" != "$ac_new_val_w"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+ ac_cache_corrupted=:
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+ eval $ac_var=\$ac_old_val
+ fi
+ { $as_echo "$as_me:${as_lineno-$LINENO}: former value: \`$ac_old_val'" >&5
+$as_echo "$as_me: former value: \`$ac_old_val'" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: current value: \`$ac_new_val'" >&5
+$as_echo "$as_me: current value: \`$ac_new_val'" >&2;}
+ fi;;
+ esac
+ # Pass precious variables to config.status.
+ if test "$ac_new_set" = set; then
+ case $ac_new_val in
+ *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+ *) ac_arg=$ac_var=$ac_new_val ;;
+ esac
+ case " $ac_configure_args " in
+ *" '$ac_arg' "*) ;; # Avoid dups. Use of quotes ensures accuracy.
+ *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+ esac
+ fi
+done
+if $ac_cache_corrupted; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+ { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+ as_fn_error $? "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+am__api_version='1.11'
+
+ac_aux_dir=
+for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
+ if test -f "$ac_dir/install-sh"; then
+ ac_aux_dir=$ac_dir
+ ac_install_sh="$ac_aux_dir/install-sh -c"
+ break
+ elif test -f "$ac_dir/install.sh"; then
+ ac_aux_dir=$ac_dir
+ ac_install_sh="$ac_aux_dir/install.sh -c"
+ break
+ elif test -f "$ac_dir/shtool"; then
+ ac_aux_dir=$ac_dir
+ ac_install_sh="$ac_aux_dir/shtool install -c"
+ break
+ fi
+done
+if test -z "$ac_aux_dir"; then
+ as_fn_error $? "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5
+fi
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+ac_config_guess="$SHELL $ac_aux_dir/config.guess" # Please don't use this var.
+ac_config_sub="$SHELL $ac_aux_dir/config.sub" # Please don't use this var.
+ac_configure="$SHELL $ac_aux_dir/configure" # Please don't use this var.
+
+
+# Find a good install program. We prefer a C program (faster),
+# so one script is as good as another. But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+# Reject install programs that cannot install multiple files.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+$as_echo_n "checking for a BSD-compatible install... " >&6; }
+if test -z "$INSTALL"; then
+if test "${ac_cv_path_install+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ # Account for people who put trailing slashes in PATH elements.
+case $as_dir/ in #((
+ ./ | .// | /[cC]/* | \
+ /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+ ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
+ /usr/ucb/* ) ;;
+ *)
+ # OSF1 and SCO ODT 3.0 have their own names for install.
+ # Don't use installbsd from OSF since it installs stuff as root
+ # by default.
+ for ac_prog in ginstall scoinst install; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
+ if test $ac_prog = install &&
+ grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+ # AIX install. It has an incompatible calling convention.
+ :
+ elif test $ac_prog = install &&
+ grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+ # program-specific install script used by HP pwplus--don't use.
+ :
+ else
+ rm -rf conftest.one conftest.two conftest.dir
+ echo one > conftest.one
+ echo two > conftest.two
+ mkdir conftest.dir
+ if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" &&
+ test -s conftest.one && test -s conftest.two &&
+ test -s conftest.dir/conftest.one &&
+ test -s conftest.dir/conftest.two
+ then
+ ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+ break 3
+ fi
+ fi
+ fi
+ done
+ done
+ ;;
+esac
+
+ done
+IFS=$as_save_IFS
+
+rm -rf conftest.one conftest.two conftest.dir
+
+fi
+ if test "${ac_cv_path_install+set}" = set; then
+ INSTALL=$ac_cv_path_install
+ else
+ # As a last resort, use the slow shell script. Don't cache a
+ # value for INSTALL within a source directory, because that will
+ # break other packages using the cache if that directory is
+ # removed, or if the value is a relative name.
+ INSTALL=$ac_install_sh
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+$as_echo "$INSTALL" >&6; }
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether build environment is sane" >&5
+$as_echo_n "checking whether build environment is sane... " >&6; }
+# Just in case
+sleep 1
+echo timestamp > conftest.file
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name. Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+ *[\\\"\#\$\&\'\`$am_lf]*)
+ as_fn_error $? "unsafe absolute working directory name" "$LINENO" 5 ;;
+esac
+case $srcdir in
+ *[\\\"\#\$\&\'\`$am_lf\ \ ]*)
+ as_fn_error $? "unsafe srcdir value: \`$srcdir'" "$LINENO" 5 ;;
+esac
+
+# Do `set' in a subshell so we don't clobber the current shell's
+# arguments. Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+ set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+ if test "$*" = "X"; then
+ # -L didn't work.
+ set X `ls -t "$srcdir/configure" conftest.file`
+ fi
+ rm -f conftest.file
+ if test "$*" != "X $srcdir/configure conftest.file" \
+ && test "$*" != "X conftest.file $srcdir/configure"; then
+
+ # If neither matched, then we have a broken ls. This can happen
+ # if, for instance, CONFIG_SHELL is bash and it inherits a
+ # broken ls alias from the environment. This has actually
+ # happened. Such a system could not be considered "sane".
+ as_fn_error $? "ls -t appears to fail. Make sure there is not a broken
+alias in your environment" "$LINENO" 5
+ fi
+
+ test "$2" = conftest.file
+ )
+then
+ # Ok.
+ :
+else
+ as_fn_error $? "newly created file is older than distributed files!
+Check your system clock" "$LINENO" 5
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+test "$program_prefix" != NONE &&
+ program_transform_name="s&^&$program_prefix&;$program_transform_name"
+# Use a double $ so make ignores it.
+test "$program_suffix" != NONE &&
+ program_transform_name="s&\$&$program_suffix&;$program_transform_name"
+# Double any \ or $.
+# By default was `s,x,x', remove it if useless.
+ac_script='s/[\\$]/&&/g;s/;s,x,x,$//'
+program_transform_name=`$as_echo "$program_transform_name" | sed "$ac_script"`
+
+# expand $ac_aux_dir to an absolute path
+am_aux_dir=`cd $ac_aux_dir && pwd`
+
+if test x"${MISSING+set}" != xset; then
+ case $am_aux_dir in
+ *\ * | *\ *)
+ MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
+ *)
+ MISSING="\${SHELL} $am_aux_dir/missing" ;;
+ esac
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --run true"; then
+ am_missing_run="$MISSING --run "
+else
+ am_missing_run=
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \`missing' script is too old or missing" >&5
+$as_echo "$as_me: WARNING: \`missing' script is too old or missing" >&2;}
+fi
+
+if test x"${install_sh}" != xset; then
+ case $am_aux_dir in
+ *\ * | *\ *)
+ install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+ *)
+ install_sh="\${SHELL} $am_aux_dir/install-sh"
+ esac
+fi
+
+# Installed binaries are usually stripped using `strip' when the user
+# run `make install-strip'. However `strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the `STRIP' environment variable to overrule this program.
+if test "$cross_compiling" != no; then
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_STRIP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$STRIP"; then
+ ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+$as_echo "$STRIP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+ ac_ct_STRIP=$STRIP
+ # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_STRIP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_STRIP"; then
+ ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_STRIP="strip"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+$as_echo "$ac_ct_STRIP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_STRIP" = x; then
+ STRIP=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ STRIP=$ac_ct_STRIP
+ fi
+else
+ STRIP="$ac_cv_prog_STRIP"
+fi
+
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a thread-safe mkdir -p" >&5
+$as_echo_n "checking for a thread-safe mkdir -p... " >&6; }
+if test -z "$MKDIR_P"; then
+ if test "${ac_cv_path_mkdir+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/opt/sfw/bin
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_prog in mkdir gmkdir; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; } || continue
+ case `"$as_dir/$ac_prog$ac_exec_ext" --version 2>&1` in #(
+ 'mkdir (GNU coreutils) '* | \
+ 'mkdir (coreutils) '* | \
+ 'mkdir (fileutils) '4.1*)
+ ac_cv_path_mkdir=$as_dir/$ac_prog$ac_exec_ext
+ break 3;;
+ esac
+ done
+ done
+ done
+IFS=$as_save_IFS
+
+fi
+
+ test -d ./--version && rmdir ./--version
+ if test "${ac_cv_path_mkdir+set}" = set; then
+ MKDIR_P="$ac_cv_path_mkdir -p"
+ else
+ # As a last resort, use the slow shell script. Don't cache a
+ # value for MKDIR_P within a source directory, because that will
+ # break other packages using the cache if that directory is
+ # removed, or if the value is a relative name.
+ MKDIR_P="$ac_install_sh -d"
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5
+$as_echo "$MKDIR_P" >&6; }
+
+mkdir_p="$MKDIR_P"
+case $mkdir_p in
+ [\\/$]* | ?:[\\/]*) ;;
+ */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
+esac
+
+for ac_prog in gawk mawk nawk awk
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AWK+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$AWK"; then
+ ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_AWK="$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+$as_echo "$AWK" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$AWK" && break
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5
+$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
+set x ${MAKE-make}
+ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
+if eval "test \"\${ac_cv_prog_make_${ac_make}_set+set}\"" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat >conftest.make <<\_ACEOF
+SHELL = /bin/sh
+all:
+ @echo '@@@%%%=$(MAKE)=@@@%%%'
+_ACEOF
+# GNU make sometimes prints "make[1]: Entering ...", which would confuse us.
+case `${MAKE-make} -f conftest.make 2>/dev/null` in
+ *@@@%%%=?*=@@@%%%*)
+ eval ac_cv_prog_make_${ac_make}_set=yes;;
+ *)
+ eval ac_cv_prog_make_${ac_make}_set=no;;
+esac
+rm -f conftest.make
+fi
+if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ SET_MAKE=
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+ am__leading_dot=.
+else
+ am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+
+if test "`cd $srcdir && pwd`" != "`pwd`"; then
+ # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
+ # is not polluted with repeated "-I."
+ am__isrc=' -I$(srcdir)'
+ # test to see if srcdir already configured
+ if test -f $srcdir/config.status; then
+ as_fn_error $? "source directory already configured; run \"make distclean\" there first" "$LINENO" 5
+ fi
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+ if (cygpath --version) >/dev/null 2>/dev/null; then
+ CYGPATH_W='cygpath -w'
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+ CYGPATH_W=echo
+ fi
+fi
+
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+
+
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+_ACEOF
+
+
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+
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+ # Check whether --enable-maintainer-mode was given.
+if test "${enable_maintainer_mode+set}" = set; then :
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+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $USE_MAINTAINER_MODE" >&5
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+
+DEPDIR="${am__leading_dot}deps"
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+ac_config_commands="$ac_config_commands depfiles"
+
+
+am_make=${MAKE-make}
+cat > confinc << 'END'
+am__doit:
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+# If we don't find an include directive, just comment out the code.
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+ am__quote=
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+rm -f confinc confmf
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+# Check whether --enable-dependency-tracking was given.
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+if test "x$enable_dependency_tracking" != xno; then
+ am_depcomp="$ac_aux_dir/depcomp"
+ AMDEPBACKSLASH='\'
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+ac_compiler_gnu=$ac_cv_c_compiler_gnu
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+$as_echo_n "checking for $ac_word... " >&6; }
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+ ac_cv_prog_CC="${ac_tool_prefix}gcc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
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+
+fi
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+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
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+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+ ac_ct_CC=$CC
+ # Extract the first word of "gcc", so it can be a program name with args.
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+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_CC"; then
+ ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
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+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_CC="gcc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_CC" = x; then
+ CC=""
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ CC=$ac_ct_CC
+ fi
+else
+ CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_CC="${ac_tool_prefix}cc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ fi
+fi
+if test -z "$CC"; then
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+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+ ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
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+ continue
+ fi
+ ac_cv_prog_CC="cc"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
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+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
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+ shift
+ ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+ fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
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+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+ if test -n "$ac_tool_prefix"; then
+ for ac_prog in cl.exe
+ do
+ # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
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+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$CC"; then
+ ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
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+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$CC" && break
+ done
+fi
+if test -z "$CC"; then
+ ac_ct_CC=$CC
+ for ac_prog in cl.exe
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
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+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
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+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
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+done
+ done
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+
+fi
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+ac_ct_CC=$ac_cv_prog_ac_ct_CC
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+$as_echo "$ac_ct_CC" >&6; }
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+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$ac_ct_CC" && break
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+
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+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ CC=$ac_ct_CC
+ fi
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+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
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+for ac_option in --version -v -V -qversion; do
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+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+ ac_status=$?
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+ cat conftest.er1 >&5
+ fi
+ rm -f conftest.er1 conftest.err
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
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+int
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+ return 0;
+}
+_ACEOF
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+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
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+$as_echo_n "checking whether the C compiler works... " >&6; }
+ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+
+# The possible output files:
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+
+ac_rmfiles=
+for ac_file in $ac_files
+do
+ case $ac_file in
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+ * ) ac_rmfiles="$ac_rmfiles $ac_file";;
+ esac
+done
+rm -f $ac_rmfiles
+
+if { { ac_try="$ac_link_default"
+case "(($ac_try" in
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+ *) ac_try_echo=$ac_try;;
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+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
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+ (eval "$ac_link_default") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then :
+ # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
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+# in a Makefile. We should not override ac_cv_exeext if it was cached,
+# so that the user can short-circuit this test for compilers unknown to
+# Autoconf.
+for ac_file in $ac_files ''
+do
+ test -f "$ac_file" || continue
+ case $ac_file in
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+ ;;
+ [ab].out )
+ # We found the default executable, but exeext='' is most
+ # certainly right.
+ break;;
+ *.* )
+ if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no;
+ then :; else
+ ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+ fi
+ # We set ac_cv_exeext here because the later test for it is not
+ # safe: cross compilers may not add the suffix if given an `-o'
+ # argument, so we may need to know it at that point already.
+ # Even if this section looks crufty: it has the advantage of
+ # actually working.
+ break;;
+ * )
+ break;;
+ esac
+done
+test "$ac_cv_exeext" = no && ac_cv_exeext=
+
+else
+ ac_file=''
+fi
+if test -z "$ac_file"; then :
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+$as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "C compiler cannot create executables
+See \`config.log' for more details" "$LINENO" 5 ; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+$as_echo_n "checking for C compiler default output file name... " >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+$as_echo "$ac_file" >&6; }
+ac_exeext=$ac_cv_exeext
+
+rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+$as_echo_n "checking for suffix of executables... " >&6; }
+if { { ac_try="$ac_link"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then :
+ # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'. For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+ test -f "$ac_file" || continue
+ case $ac_file in
+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+ *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+ break;;
+ * ) break;;
+ esac
+done
+else
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details" "$LINENO" 5 ; }
+fi
+rm -f conftest conftest$ac_cv_exeext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+$as_echo "$ac_cv_exeext" >&6; }
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdio.h>
+int
+main ()
+{
+FILE *f = fopen ("conftest.out", "w");
+ return ferror (f) || fclose (f) != 0;
+
+ ;
+ return 0;
+}
+_ACEOF
+ac_clean_files="$ac_clean_files conftest.out"
+# Check that the compiler produces executables we can run. If not, either
+# the compiler is broken, or we cross compile.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+$as_echo_n "checking whether we are cross compiling... " >&6; }
+if test "$cross_compiling" != yes; then
+ { { ac_try="$ac_link"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_link") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }
+ if { ac_try='./conftest$ac_cv_exeext'
+ { { case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_try") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }; then
+ cross_compiling=no
+ else
+ if test "$cross_compiling" = maybe; then
+ cross_compiling=yes
+ else
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details" "$LINENO" 5 ; }
+ fi
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+$as_echo "$cross_compiling" >&6; }
+
+rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+$as_echo_n "checking for suffix of object files... " >&6; }
+if test "${ac_cv_objext+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { { ac_try="$ac_compile"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+ (eval "$ac_compile") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then :
+ for ac_file in conftest.o conftest.obj conftest.*; do
+ test -f "$ac_file" || continue;
+ case $ac_file in
+ *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;
+ *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+ break;;
+ esac
+done
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details" "$LINENO" 5 ; }
+fi
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+$as_echo "$ac_cv_objext" >&6; }
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if test "${ac_cv_c_compiler_gnu+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+#ifndef __GNUC__
+ choke me
+#endif
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_compiler_gnu=yes
+else
+ ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+ GCC=yes
+else
+ GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if test "${ac_cv_prog_cc_g+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_save_c_werror_flag=$ac_c_werror_flag
+ ac_c_werror_flag=yes
+ ac_cv_prog_cc_g=no
+ CFLAGS="-g"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_prog_cc_g=yes
+else
+ CFLAGS=""
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+ ac_c_werror_flag=$ac_save_c_werror_flag
+ CFLAGS="-g"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+ CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+ if test "$GCC" = yes; then
+ CFLAGS="-g -O2"
+ else
+ CFLAGS="-g"
+ fi
+else
+ if test "$GCC" = yes; then
+ CFLAGS="-O2"
+ else
+ CFLAGS=
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if test "${ac_cv_prog_cc_c89+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+ char **p;
+ int i;
+{
+ return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+ char *s;
+ va_list v;
+ va_start (v,p);
+ s = g (p, va_arg (v,int));
+ va_end (v);
+ return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default. It has
+ function prototypes and stuff, but not '\xHH' hex character constants.
+ These don't provoke an error unfortunately, instead are silently treated
+ as 'x'. The following induces an error, until -std is added to get
+ proper ANSI mode. Curiously '\x00'!='x' always comes out true, for an
+ array size at least. It's necessary to write '\x00'==0 to get something
+ that's true only with -std. */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+ inside strings and character constants. */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1];
+ ;
+ return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+ -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+ CC="$ac_save_CC $ac_arg"
+ if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+ test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+ x)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+ xno)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+ *)
+ CC="$CC $ac_cv_prog_cc_c89"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+depcc="$CC" am_compiler_list=
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking dependency style of $depcc" >&5
+$as_echo_n "checking dependency style of $depcc... " >&6; }
+if test "${am_cv_CC_dependencies_compiler_type+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+ # We make a subdir and do the tests there. Otherwise we can end up
+ # making bogus files that we don't know about and never remove. For
+ # instance it was reported that on HP-UX the gcc test will end up
+ # making a dummy file named `D' -- because `-MD' means `put the output
+ # in D'.
+ mkdir conftest.dir
+ # Copy depcomp to subdir because otherwise we won't find it if we're
+ # using a relative directory.
+ cp "$am_depcomp" conftest.dir
+ cd conftest.dir
+ # We will build objects and dependencies in a subdirectory because
+ # it helps to detect inapplicable dependency modes. For instance
+ # both Tru64's cc and ICC support -MD to output dependencies as a
+ # side effect of compilation, but ICC will put the dependencies in
+ # the current directory while Tru64 will put them in the object
+ # directory.
+ mkdir sub
+
+ am_cv_CC_dependencies_compiler_type=none
+ if test "$am_compiler_list" = ""; then
+ am_compiler_list=`sed -n 's/^#*\([a-zA-Z0-9]*\))$/\1/p' < ./depcomp`
+ fi
+ am__universal=false
+ case " $depcc " in #(
+ *\ -arch\ *\ -arch\ *) am__universal=true ;;
+ esac
+
+ for depmode in $am_compiler_list; do
+ # Setup a source with many dependencies, because some compilers
+ # like to wrap large dependency lists on column 80 (with \), and
+ # we should not choose a depcomp mode which is confused by this.
+ #
+ # We need to recreate these files for each test, as the compiler may
+ # overwrite some of them when testing with obscure command lines.
+ # This happens at least with the AIX C compiler.
+ : > sub/conftest.c
+ for i in 1 2 3 4 5 6; do
+ echo '#include "conftst'$i'.h"' >> sub/conftest.c
+ # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+ # Solaris 8's {/usr,}/bin/sh.
+ touch sub/conftst$i.h
+ done
+ echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+ # We check with `-c' and `-o' for the sake of the "dashmstdout"
+ # mode. It turns out that the SunPro C++ compiler does not properly
+ # handle `-M -o', and we need to detect this. Also, some Intel
+ # versions had trouble with output in subdirs
+ am__obj=sub/conftest.${OBJEXT-o}
+ am__minus_obj="-o $am__obj"
+ case $depmode in
+ gcc)
+ # This depmode causes a compiler race in universal mode.
+ test "$am__universal" = false || continue
+ ;;
+ nosideeffect)
+ # after this tag, mechanisms are not by side-effect, so they'll
+ # only be used when explicitly requested
+ if test "x$enable_dependency_tracking" = xyes; then
+ continue
+ else
+ break
+ fi
+ ;;
+ msvisualcpp | msvcmsys)
+ # This compiler won't grok `-c -o', but also, the minuso test has
+ # not run yet. These depmodes are late enough in the game, and
+ # so weak that their functioning should not be impacted.
+ am__obj=conftest.${OBJEXT-o}
+ am__minus_obj=
+ ;;
+ none) break ;;
+ esac
+ if depmode=$depmode \
+ source=sub/conftest.c object=$am__obj \
+ depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+ $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+ >/dev/null 2>conftest.err &&
+ grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+ grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+ ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+ # icc doesn't choke on unknown options, it will just issue warnings
+ # or remarks (even with -Werror). So we grep stderr for any message
+ # that says an option was ignored or not supported.
+ # When given -MP, icc 7.0 and 7.1 complain thusly:
+ # icc: Command line warning: ignoring option '-M'; no argument required
+ # The diagnosis changed in icc 8.0:
+ # icc: Command line remark: option '-MP' not supported
+ if (grep 'ignoring option' conftest.err ||
+ grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+ am_cv_CC_dependencies_compiler_type=$depmode
+ break
+ fi
+ fi
+ done
+
+ cd ..
+ rm -rf conftest.dir
+else
+ am_cv_CC_dependencies_compiler_type=none
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_CC_dependencies_compiler_type" >&5
+$as_echo "$am_cv_CC_dependencies_compiler_type" >&6; }
+CCDEPMODE=depmode=$am_cv_CC_dependencies_compiler_type
+
+ if
+ test "x$enable_dependency_tracking" != xno \
+ && test "$am_cv_CC_dependencies_compiler_type" = gcc3; then
+ am__fastdepCC_TRUE=
+ am__fastdepCC_FALSE='#'
+else
+ am__fastdepCC_TRUE='#'
+ am__fastdepCC_FALSE=
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a sed that does not truncate output" >&5
+$as_echo_n "checking for a sed that does not truncate output... " >&6; }
+if test "${ac_cv_path_SED+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
+ for ac_i in 1 2 3 4 5 6 7; do
+ ac_script="$ac_script$as_nl$ac_script"
+ done
+ echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed
+ { ac_script=; unset ac_script;}
+ if test -z "$SED"; then
+ ac_path_SED_found=false
+ # Loop through the user's path and test for each of PROGNAME-LIST
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_prog in sed gsed; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ ac_path_SED="$as_dir/$ac_prog$ac_exec_ext"
+ { test -f "$ac_path_SED" && $as_test_x "$ac_path_SED"; } || continue
+# Check for GNU ac_path_SED and select it if it is found.
+ # Check for GNU $ac_path_SED
+case `"$ac_path_SED" --version 2>&1` in
+*GNU*)
+ ac_cv_path_SED="$ac_path_SED" ac_path_SED_found=:;;
+*)
+ ac_count=0
+ $as_echo_n 0123456789 >"conftest.in"
+ while :
+ do
+ cat "conftest.in" "conftest.in" >"conftest.tmp"
+ mv "conftest.tmp" "conftest.in"
+ cp "conftest.in" "conftest.nl"
+ $as_echo '' >> "conftest.nl"
+ "$ac_path_SED" -f conftest.sed < "conftest.nl" >"conftest.out" 2>/dev/null || break
+ diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+ as_fn_arith $ac_count + 1 && ac_count=$as_val
+ if test $ac_count -gt ${ac_path_SED_max-0}; then
+ # Best one so far, save it but keep looking for a better one
+ ac_cv_path_SED="$ac_path_SED"
+ ac_path_SED_max=$ac_count
+ fi
+ # 10*(2^10) chars as input seems more than enough
+ test $ac_count -gt 10 && break
+ done
+ rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+ $ac_path_SED_found && break 3
+ done
+ done
+ done
+IFS=$as_save_IFS
+ if test -z "$ac_cv_path_SED"; then
+ as_fn_error $? "no acceptable sed could be found in \$PATH" "$LINENO" 5
+ fi
+else
+ ac_cv_path_SED=$SED
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_SED" >&5
+$as_echo "$ac_cv_path_SED" >&6; }
+ SED="$ac_cv_path_SED"
+ rm -f conftest.sed
+
+test -z "$SED" && SED=sed
+Xsed="$SED -e 1s/^X//"
+
+
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+if test "${ac_cv_path_GREP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -z "$GREP"; then
+ ac_path_GREP_found=false
+ # Loop through the user's path and test for each of PROGNAME-LIST
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_prog in grep ggrep; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+ { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+ # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+ ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+ ac_count=0
+ $as_echo_n 0123456789 >"conftest.in"
+ while :
+ do
+ cat "conftest.in" "conftest.in" >"conftest.tmp"
+ mv "conftest.tmp" "conftest.in"
+ cp "conftest.in" "conftest.nl"
+ $as_echo 'GREP' >> "conftest.nl"
+ "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+ diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+ as_fn_arith $ac_count + 1 && ac_count=$as_val
+ if test $ac_count -gt ${ac_path_GREP_max-0}; then
+ # Best one so far, save it but keep looking for a better one
+ ac_cv_path_GREP="$ac_path_GREP"
+ ac_path_GREP_max=$ac_count
+ fi
+ # 10*(2^10) chars as input seems more than enough
+ test $ac_count -gt 10 && break
+ done
+ rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+ $ac_path_GREP_found && break 3
+ done
+ done
+ done
+IFS=$as_save_IFS
+ if test -z "$ac_cv_path_GREP"; then
+ as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+ fi
+else
+ ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+$as_echo "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+$as_echo_n "checking for egrep... " >&6; }
+if test "${ac_cv_path_EGREP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+ then ac_cv_path_EGREP="$GREP -E"
+ else
+ if test -z "$EGREP"; then
+ ac_path_EGREP_found=false
+ # Loop through the user's path and test for each of PROGNAME-LIST
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_prog in egrep; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+ { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+ # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+ ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+ ac_count=0
+ $as_echo_n 0123456789 >"conftest.in"
+ while :
+ do
+ cat "conftest.in" "conftest.in" >"conftest.tmp"
+ mv "conftest.tmp" "conftest.in"
+ cp "conftest.in" "conftest.nl"
+ $as_echo 'EGREP' >> "conftest.nl"
+ "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+ diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+ as_fn_arith $ac_count + 1 && ac_count=$as_val
+ if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+ # Best one so far, save it but keep looking for a better one
+ ac_cv_path_EGREP="$ac_path_EGREP"
+ ac_path_EGREP_max=$ac_count
+ fi
+ # 10*(2^10) chars as input seems more than enough
+ test $ac_count -gt 10 && break
+ done
+ rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+ $ac_path_EGREP_found && break 3
+ done
+ done
+ done
+IFS=$as_save_IFS
+ if test -z "$ac_cv_path_EGREP"; then
+ as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+ fi
+else
+ ac_cv_path_EGREP=$EGREP
+fi
+
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+$as_echo "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fgrep" >&5
+$as_echo_n "checking for fgrep... " >&6; }
+if test "${ac_cv_path_FGREP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if echo 'ab*c' | $GREP -F 'ab*c' >/dev/null 2>&1
+ then ac_cv_path_FGREP="$GREP -F"
+ else
+ if test -z "$FGREP"; then
+ ac_path_FGREP_found=false
+ # Loop through the user's path and test for each of PROGNAME-LIST
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_prog in fgrep; do
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ ac_path_FGREP="$as_dir/$ac_prog$ac_exec_ext"
+ { test -f "$ac_path_FGREP" && $as_test_x "$ac_path_FGREP"; } || continue
+# Check for GNU ac_path_FGREP and select it if it is found.
+ # Check for GNU $ac_path_FGREP
+case `"$ac_path_FGREP" --version 2>&1` in
+*GNU*)
+ ac_cv_path_FGREP="$ac_path_FGREP" ac_path_FGREP_found=:;;
+*)
+ ac_count=0
+ $as_echo_n 0123456789 >"conftest.in"
+ while :
+ do
+ cat "conftest.in" "conftest.in" >"conftest.tmp"
+ mv "conftest.tmp" "conftest.in"
+ cp "conftest.in" "conftest.nl"
+ $as_echo 'FGREP' >> "conftest.nl"
+ "$ac_path_FGREP" FGREP < "conftest.nl" >"conftest.out" 2>/dev/null || break
+ diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+ as_fn_arith $ac_count + 1 && ac_count=$as_val
+ if test $ac_count -gt ${ac_path_FGREP_max-0}; then
+ # Best one so far, save it but keep looking for a better one
+ ac_cv_path_FGREP="$ac_path_FGREP"
+ ac_path_FGREP_max=$ac_count
+ fi
+ # 10*(2^10) chars as input seems more than enough
+ test $ac_count -gt 10 && break
+ done
+ rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+ $ac_path_FGREP_found && break 3
+ done
+ done
+ done
+IFS=$as_save_IFS
+ if test -z "$ac_cv_path_FGREP"; then
+ as_fn_error $? "no acceptable fgrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+ fi
+else
+ ac_cv_path_FGREP=$FGREP
+fi
+
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_FGREP" >&5
+$as_echo "$ac_cv_path_FGREP" >&6; }
+ FGREP="$ac_cv_path_FGREP"
+
+
+test -z "$GREP" && GREP=grep
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-gnu-ld was given.
+if test "${with_gnu_ld+set}" = set; then :
+ withval=$with_gnu_ld; test "$withval" = no || with_gnu_ld=yes
+else
+ with_gnu_ld=no
+fi
+
+ac_prog=ld
+if test "$GCC" = yes; then
+ # Check if gcc -print-prog-name=ld gives a path.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld used by $CC" >&5
+$as_echo_n "checking for ld used by $CC... " >&6; }
+ case $host in
+ *-*-mingw*)
+ # gcc leaves a trailing carriage return which upsets mingw
+ ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+ *)
+ ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+ esac
+ case $ac_prog in
+ # Accept absolute paths.
+ [\\/]* | ?:[\\/]*)
+ re_direlt='/[^/][^/]*/\.\./'
+ # Canonicalize the pathname of ld
+ ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
+ while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
+ ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
+ done
+ test -z "$LD" && LD="$ac_prog"
+ ;;
+ "")
+ # If it fails, then pretend we aren't using GCC.
+ ac_prog=ld
+ ;;
+ *)
+ # If it is relative, then search for the first ld in PATH.
+ with_gnu_ld=unknown
+ ;;
+ esac
+elif test "$with_gnu_ld" = yes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5
+$as_echo_n "checking for GNU ld... " >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for non-GNU ld" >&5
+$as_echo_n "checking for non-GNU ld... " >&6; }
+fi
+if test "${lt_cv_path_LD+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -z "$LD"; then
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for ac_dir in $PATH; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+ lt_cv_path_LD="$ac_dir/$ac_prog"
+ # Check to see if the program is GNU ld. I'd rather use --version,
+ # but apparently some variants of GNU ld only accept -v.
+ # Break only if it was the GNU/non-GNU ld that we prefer.
+ case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
+ *GNU* | *'with BFD'*)
+ test "$with_gnu_ld" != no && break
+ ;;
+ *)
+ test "$with_gnu_ld" != yes && break
+ ;;
+ esac
+ fi
+ done
+ IFS="$lt_save_ifs"
+else
+ lt_cv_path_LD="$LD" # Let the user override the test with a path.
+fi
+fi
+
+LD="$lt_cv_path_LD"
+if test -n "$LD"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LD" >&5
+$as_echo "$LD" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+test -z "$LD" && as_fn_error $? "no acceptable ld found in \$PATH" "$LINENO" 5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5
+$as_echo_n "checking if the linker ($LD) is GNU ld... " >&6; }
+if test "${lt_cv_prog_gnu_ld+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ # I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+ lt_cv_prog_gnu_ld=yes
+ ;;
+*)
+ lt_cv_prog_gnu_ld=no
+ ;;
+esac
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_gnu_ld" >&5
+$as_echo "$lt_cv_prog_gnu_ld" >&6; }
+with_gnu_ld=$lt_cv_prog_gnu_ld
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for BSD- or MS-compatible name lister (nm)" >&5
+$as_echo_n "checking for BSD- or MS-compatible name lister (nm)... " >&6; }
+if test "${lt_cv_path_NM+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$NM"; then
+ # Let the user override the test.
+ lt_cv_path_NM="$NM"
+else
+ lt_nm_to_check="${ac_tool_prefix}nm"
+ if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
+ lt_nm_to_check="$lt_nm_to_check nm"
+ fi
+ for lt_tmp_nm in $lt_nm_to_check; do
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ tmp_nm="$ac_dir/$lt_tmp_nm"
+ if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
+ # Check to see if the nm accepts a BSD-compat flag.
+ # Adding the `sed 1q' prevents false positives on HP-UX, which says:
+ # nm: unknown option "B" ignored
+ # Tru64's nm complains that /dev/null is an invalid object file
+ case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
+ */dev/null* | *'Invalid file or object type'*)
+ lt_cv_path_NM="$tmp_nm -B"
+ break
+ ;;
+ *)
+ case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+ */dev/null*)
+ lt_cv_path_NM="$tmp_nm -p"
+ break
+ ;;
+ *)
+ lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
+ continue # so that we can try to find one that supports BSD flags
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ done
+ IFS="$lt_save_ifs"
+ done
+ : ${lt_cv_path_NM=no}
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_NM" >&5
+$as_echo "$lt_cv_path_NM" >&6; }
+if test "$lt_cv_path_NM" != "no"; then
+ NM="$lt_cv_path_NM"
+else
+ # Didn't find any BSD compatible name lister, look for dumpbin.
+ if test -n "$ac_tool_prefix"; then
+ for ac_prog in "dumpbin -symbols" "link -dump -symbols"
+ do
+ # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_DUMPBIN+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$DUMPBIN"; then
+ ac_cv_prog_DUMPBIN="$DUMPBIN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_DUMPBIN="$ac_tool_prefix$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+DUMPBIN=$ac_cv_prog_DUMPBIN
+if test -n "$DUMPBIN"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DUMPBIN" >&5
+$as_echo "$DUMPBIN" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$DUMPBIN" && break
+ done
+fi
+if test -z "$DUMPBIN"; then
+ ac_ct_DUMPBIN=$DUMPBIN
+ for ac_prog in "dumpbin -symbols" "link -dump -symbols"
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_DUMPBIN+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_DUMPBIN"; then
+ ac_cv_prog_ac_ct_DUMPBIN="$ac_ct_DUMPBIN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_DUMPBIN="$ac_prog"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DUMPBIN=$ac_cv_prog_ac_ct_DUMPBIN
+if test -n "$ac_ct_DUMPBIN"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DUMPBIN" >&5
+$as_echo "$ac_ct_DUMPBIN" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ test -n "$ac_ct_DUMPBIN" && break
+done
+
+ if test "x$ac_ct_DUMPBIN" = x; then
+ DUMPBIN=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ DUMPBIN=$ac_ct_DUMPBIN
+ fi
+fi
+
+
+ if test "$DUMPBIN" != ":"; then
+ NM="$DUMPBIN"
+ fi
+fi
+test -z "$NM" && NM=nm
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5
+$as_echo_n "checking the name lister ($NM) interface... " >&6; }
+if test "${lt_cv_nm_interface+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_nm_interface="BSD nm"
+ echo "int some_variable = 0;" > conftest.$ac_ext
+ (eval echo "\"\$as_me:4494: $ac_compile\"" >&5)
+ (eval "$ac_compile" 2>conftest.err)
+ cat conftest.err >&5
+ (eval echo "\"\$as_me:4497: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
+ (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
+ cat conftest.err >&5
+ (eval echo "\"\$as_me:4500: output\"" >&5)
+ cat conftest.out >&5
+ if $GREP 'External.*some_variable' conftest.out > /dev/null; then
+ lt_cv_nm_interface="MS dumpbin"
+ fi
+ rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_nm_interface" >&5
+$as_echo "$lt_cv_nm_interface" >&6; }
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ln -s works" >&5
+$as_echo_n "checking whether ln -s works... " >&6; }
+LN_S=$as_ln_s
+if test "$LN_S" = "ln -s"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, using $LN_S" >&5
+$as_echo "no, using $LN_S" >&6; }
+fi
+
+# find the maximum length of command line arguments
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the maximum length of command line arguments" >&5
+$as_echo_n "checking the maximum length of command line arguments... " >&6; }
+if test "${lt_cv_sys_max_cmd_len+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ i=0
+ teststring="ABCD"
+
+ case $build_os in
+ msdosdjgpp*)
+ # On DJGPP, this test can blow up pretty badly due to problems in libc
+ # (any single argument exceeding 2000 bytes causes a buffer overrun
+ # during glob expansion). Even if it were fixed, the result of this
+ # check would be larger than it should be.
+ lt_cv_sys_max_cmd_len=12288; # 12K is about right
+ ;;
+
+ gnu*)
+ # Under GNU Hurd, this test is not required because there is
+ # no limit to the length of command line arguments.
+ # Libtool will interpret -1 as no limit whatsoever
+ lt_cv_sys_max_cmd_len=-1;
+ ;;
+
+ cygwin* | mingw* | cegcc*)
+ # On Win9x/ME, this test blows up -- it succeeds, but takes
+ # about 5 minutes as the teststring grows exponentially.
+ # Worse, since 9x/ME are not pre-emptively multitasking,
+ # you end up with a "frozen" computer, even though with patience
+ # the test eventually succeeds (with a max line length of 256k).
+ # Instead, let's just punt: use the minimum linelength reported by
+ # all of the supported platforms: 8192 (on NT/2K/XP).
+ lt_cv_sys_max_cmd_len=8192;
+ ;;
+
+ amigaos*)
+ # On AmigaOS with pdksh, this test takes hours, literally.
+ # So we just punt and use a minimum line length of 8192.
+ lt_cv_sys_max_cmd_len=8192;
+ ;;
+
+ netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+ # This has been around since 386BSD, at least. Likely further.
+ if test -x /sbin/sysctl; then
+ lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+ elif test -x /usr/sbin/sysctl; then
+ lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+ else
+ lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs
+ fi
+ # And add a safety zone
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+ ;;
+
+ interix*)
+ # We know the value 262144 and hardcode it with a safety zone (like BSD)
+ lt_cv_sys_max_cmd_len=196608
+ ;;
+
+ osf*)
+ # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
+ # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
+ # nice to cause kernel panics so lets avoid the loop below.
+ # First set a reasonable default.
+ lt_cv_sys_max_cmd_len=16384
+ #
+ if test -x /sbin/sysconfig; then
+ case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
+ *1*) lt_cv_sys_max_cmd_len=-1 ;;
+ esac
+ fi
+ ;;
+ sco3.2v5*)
+ lt_cv_sys_max_cmd_len=102400
+ ;;
+ sysv5* | sco5v6* | sysv4.2uw2*)
+ kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
+ if test -n "$kargmax"; then
+ lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[ ]//'`
+ else
+ lt_cv_sys_max_cmd_len=32768
+ fi
+ ;;
+ *)
+ lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
+ if test -n "$lt_cv_sys_max_cmd_len"; then
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+ else
+ # Make teststring a little bigger before we do anything with it.
+ # a 1K string should be a reasonable start.
+ for i in 1 2 3 4 5 6 7 8 ; do
+ teststring=$teststring$teststring
+ done
+ SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
+ # If test is not a shell built-in, we'll probably end up computing a
+ # maximum length that is only half of the actual maximum length, but
+ # we can't tell.
+ while { test "X"`$SHELL $0 --fallback-echo "X$teststring$teststring" 2>/dev/null` \
+ = "XX$teststring$teststring"; } >/dev/null 2>&1 &&
+ test $i != 17 # 1/2 MB should be enough
+ do
+ i=`expr $i + 1`
+ teststring=$teststring$teststring
+ done
+ # Only check the string length outside the loop.
+ lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
+ teststring=
+ # Add a significant safety factor because C++ compilers can tack on
+ # massive amounts of additional arguments before passing them to the
+ # linker. It appears as though 1/2 is a usable value.
+ lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
+ fi
+ ;;
+ esac
+
+fi
+
+if test -n $lt_cv_sys_max_cmd_len ; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sys_max_cmd_len" >&5
+$as_echo "$lt_cv_sys_max_cmd_len" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: none" >&5
+$as_echo "none" >&6; }
+fi
+max_cmd_len=$lt_cv_sys_max_cmd_len
+
+
+
+
+
+
+: ${CP="cp -f"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands some XSI constructs" >&5
+$as_echo_n "checking whether the shell understands some XSI constructs... " >&6; }
+# Try some XSI features
+xsi_shell=no
+( _lt_dummy="a/b/c"
+ test "${_lt_dummy##*/},${_lt_dummy%/*},"${_lt_dummy%"$_lt_dummy"}, \
+ = c,a/b,, \
+ && eval 'test $(( 1 + 1 )) -eq 2 \
+ && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
+ && xsi_shell=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $xsi_shell" >&5
+$as_echo "$xsi_shell" >&6; }
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands \"+=\"" >&5
+$as_echo_n "checking whether the shell understands \"+=\"... " >&6; }
+lt_shell_append=no
+( foo=bar; set foo baz; eval "$1+=\$2" && test "$foo" = barbaz ) \
+ >/dev/null 2>&1 \
+ && lt_shell_append=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_shell_append" >&5
+$as_echo "$lt_shell_append" >&6; }
+
+
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+ lt_unset=unset
+else
+ lt_unset=false
+fi
+
+
+
+
+
+# test EBCDIC or ASCII
+case `echo X|tr X '\101'` in
+ A) # ASCII based system
+ # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
+ lt_SP2NL='tr \040 \012'
+ lt_NL2SP='tr \015\012 \040\040'
+ ;;
+ *) # EBCDIC based system
+ lt_SP2NL='tr \100 \n'
+ lt_NL2SP='tr \r\n \100\100'
+ ;;
+esac
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LD option to reload object files" >&5
+$as_echo_n "checking for $LD option to reload object files... " >&6; }
+if test "${lt_cv_ld_reload_flag+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_ld_reload_flag='-r'
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_reload_flag" >&5
+$as_echo "$lt_cv_ld_reload_flag" >&6; }
+reload_flag=$lt_cv_ld_reload_flag
+case $reload_flag in
+"" | " "*) ;;
+*) reload_flag=" $reload_flag" ;;
+esac
+reload_cmds='$LD$reload_flag -o $output$reload_objs'
+case $host_os in
+ darwin*)
+ if test "$GCC" = yes; then
+ reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
+ else
+ reload_cmds='$LD$reload_flag -o $output$reload_objs'
+ fi
+ ;;
+esac
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
+set dummy ${ac_tool_prefix}objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OBJDUMP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$OBJDUMP"; then
+ ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+OBJDUMP=$ac_cv_prog_OBJDUMP
+if test -n "$OBJDUMP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5
+$as_echo "$OBJDUMP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OBJDUMP"; then
+ ac_ct_OBJDUMP=$OBJDUMP
+ # Extract the first word of "objdump", so it can be a program name with args.
+set dummy objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_OBJDUMP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_OBJDUMP"; then
+ ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_OBJDUMP="objdump"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP
+if test -n "$ac_ct_OBJDUMP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5
+$as_echo "$ac_ct_OBJDUMP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_OBJDUMP" = x; then
+ OBJDUMP="false"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ OBJDUMP=$ac_ct_OBJDUMP
+ fi
+else
+ OBJDUMP="$ac_cv_prog_OBJDUMP"
+fi
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to recognize dependent libraries" >&5
+$as_echo_n "checking how to recognize dependent libraries... " >&6; }
+if test "${lt_cv_deplibs_check_method+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_file_magic_cmd='$MAGIC_CMD'
+lt_cv_file_magic_test_file=
+lt_cv_deplibs_check_method='unknown'
+# Need to set the preceding variable on all platforms that support
+# interlibrary dependencies.
+# 'none' -- dependencies not supported.
+# `unknown' -- same as none, but documents that we really don't know.
+# 'pass_all' -- all dependencies passed with no checks.
+# 'test_compile' -- check by making test program.
+# 'file_magic [[regex]]' -- check by looking for files in library path
+# which responds to the $file_magic_cmd with a given extended regex.
+# If you have `file' or equivalent on your system and you're not sure
+# whether `pass_all' will *always* work, you probably want this one.
+
+case $host_os in
+aix[4-9]*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+beos*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+bsdi[45]*)
+ lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib)'
+ lt_cv_file_magic_cmd='/usr/bin/file -L'
+ lt_cv_file_magic_test_file=/shlib/libc.so
+ ;;
+
+cygwin*)
+ # func_win32_libid is a shell function defined in ltmain.sh
+ lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+ lt_cv_file_magic_cmd='func_win32_libid'
+ ;;
+
+mingw* | pw32*)
+ # Base MSYS/MinGW do not provide the 'file' command needed by
+ # func_win32_libid shell function, so use a weaker test based on 'objdump',
+ # unless we find 'file', for example because we are cross-compiling.
+ if ( file / ) >/dev/null 2>&1; then
+ lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+ lt_cv_file_magic_cmd='func_win32_libid'
+ else
+ lt_cv_deplibs_check_method='file_magic file format pei*-i386(.*architecture: i386)?'
+ lt_cv_file_magic_cmd='$OBJDUMP -f'
+ fi
+ ;;
+
+cegcc)
+ # use the weaker test based on 'objdump'. See mingw*.
+ lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
+ lt_cv_file_magic_cmd='$OBJDUMP -f'
+ ;;
+
+darwin* | rhapsody*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+freebsd* | dragonfly*)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+ case $host_cpu in
+ i*86 )
+ # Not sure whether the presence of OpenBSD here was a mistake.
+ # Let's accept both of them until this is cleared up.
+ lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[3-9]86 (compact )?demand paged shared library'
+ lt_cv_file_magic_cmd=/usr/bin/file
+ lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
+ ;;
+ esac
+ else
+ lt_cv_deplibs_check_method=pass_all
+ fi
+ ;;
+
+gnu*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+hpux10.20* | hpux11*)
+ lt_cv_file_magic_cmd=/usr/bin/file
+ case $host_cpu in
+ ia64*)
+ lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - IA64'
+ lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
+ ;;
+ hppa*64*)
+ lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - PA-RISC [0-9].[0-9]'
+ lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
+ ;;
+ *)
+ lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|PA-RISC[0-9].[0-9]) shared library'
+ lt_cv_file_magic_test_file=/usr/lib/libc.sl
+ ;;
+ esac
+ ;;
+
+interix[3-9]*)
+ # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
+ lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|\.a)$'
+ ;;
+
+irix5* | irix6* | nonstopux*)
+ case $LD in
+ *-32|*"-32 ") libmagic=32-bit;;
+ *-n32|*"-n32 ") libmagic=N32;;
+ *-64|*"-64 ") libmagic=64-bit;;
+ *) libmagic=never-match;;
+ esac
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+netbsd* | netbsdelf*-gnu)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+ lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
+ else
+ lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|_pic\.a)$'
+ fi
+ ;;
+
+newos6*)
+ lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (executable|dynamic lib)'
+ lt_cv_file_magic_cmd=/usr/bin/file
+ lt_cv_file_magic_test_file=/usr/lib/libnls.so
+ ;;
+
+*nto* | *qnx*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+openbsd*)
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|\.so|_pic\.a)$'
+ else
+ lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
+ fi
+ ;;
+
+osf3* | osf4* | osf5*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+rdos*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+solaris*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+
+sysv4 | sysv4.3*)
+ case $host_vendor in
+ motorola)
+ lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib) M[0-9][0-9]* Version [0-9]'
+ lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
+ ;;
+ ncr)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ sequent)
+ lt_cv_file_magic_cmd='/bin/file'
+ lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )'
+ ;;
+ sni)
+ lt_cv_file_magic_cmd='/bin/file'
+ lt_cv_deplibs_check_method="file_magic ELF [0-9][0-9]*-bit [LM]SB dynamic lib"
+ lt_cv_file_magic_test_file=/lib/libc.so
+ ;;
+ siemens)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ pc)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+ esac
+ ;;
+
+tpf*)
+ lt_cv_deplibs_check_method=pass_all
+ ;;
+esac
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_deplibs_check_method" >&5
+$as_echo "$lt_cv_deplibs_check_method" >&6; }
+file_magic_cmd=$lt_cv_file_magic_cmd
+deplibs_check_method=$lt_cv_deplibs_check_method
+test -z "$deplibs_check_method" && deplibs_check_method=unknown
+
+
+
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_AR+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$AR"; then
+ ac_cv_prog_AR="$AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_AR="${ac_tool_prefix}ar"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+AR=$ac_cv_prog_AR
+if test -n "$AR"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
+$as_echo "$AR" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AR"; then
+ ac_ct_AR=$AR
+ # Extract the first word of "ar", so it can be a program name with args.
+set dummy ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_AR+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_AR"; then
+ ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_AR="ar"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AR=$ac_cv_prog_ac_ct_AR
+if test -n "$ac_ct_AR"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
+$as_echo "$ac_ct_AR" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_AR" = x; then
+ AR="false"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ AR=$ac_ct_AR
+ fi
+else
+ AR="$ac_cv_prog_AR"
+fi
+
+test -z "$AR" && AR=ar
+test -z "$AR_FLAGS" && AR_FLAGS=cru
+
+
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_STRIP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$STRIP"; then
+ ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+$as_echo "$STRIP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+ ac_ct_STRIP=$STRIP
+ # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_STRIP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_STRIP"; then
+ ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_STRIP="strip"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+$as_echo "$ac_ct_STRIP" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_STRIP" = x; then
+ STRIP=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ STRIP=$ac_ct_STRIP
+ fi
+else
+ STRIP="$ac_cv_prog_STRIP"
+fi
+
+test -z "$STRIP" && STRIP=:
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_RANLIB+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$RANLIB"; then
+ ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+$as_echo "$RANLIB" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+ ac_ct_RANLIB=$RANLIB
+ # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_RANLIB+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_RANLIB"; then
+ ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_RANLIB="ranlib"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+$as_echo "$ac_ct_RANLIB" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_RANLIB" = x; then
+ RANLIB=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ RANLIB=$ac_ct_RANLIB
+ fi
+else
+ RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+test -z "$RANLIB" && RANLIB=:
+
+
+
+
+
+
+# Determine commands to create old-style static archives.
+old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
+old_postinstall_cmds='chmod 644 $oldlib'
+old_postuninstall_cmds=
+
+if test -n "$RANLIB"; then
+ case $host_os in
+ openbsd*)
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
+ ;;
+ *)
+ old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$oldlib"
+ ;;
+ esac
+ old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+
+
+# Check for command to grab the raw symbol name followed by C symbol from nm.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking command to parse $NM output from $compiler object" >&5
+$as_echo_n "checking command to parse $NM output from $compiler object... " >&6; }
+if test "${lt_cv_sys_global_symbol_pipe+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+
+# These are sane defaults that work on at least a few old systems.
+# [They come from Ultrix. What could be older than Ultrix?!! ;)]
+
+# Character class describing NM global symbol codes.
+symcode='[BCDEGRST]'
+
+# Regexp to match symbols that can be accessed directly from C.
+sympat='\([_A-Za-z][_A-Za-z0-9]*\)'
+
+# Define system-specific variables.
+case $host_os in
+aix*)
+ symcode='[BCDT]'
+ ;;
+cygwin* | mingw* | pw32* | cegcc*)
+ symcode='[ABCDGISTW]'
+ ;;
+hpux*)
+ if test "$host_cpu" = ia64; then
+ symcode='[ABCDEGRST]'
+ fi
+ ;;
+irix* | nonstopux*)
+ symcode='[BCDEGRST]'
+ ;;
+osf*)
+ symcode='[BCDEGQRST]'
+ ;;
+solaris*)
+ symcode='[BDRT]'
+ ;;
+sco3.2v5*)
+ symcode='[DT]'
+ ;;
+sysv4.2uw2*)
+ symcode='[DT]'
+ ;;
+sysv5* | sco5v6* | unixware* | OpenUNIX*)
+ symcode='[ABDT]'
+ ;;
+sysv4)
+ symcode='[DFNSTU]'
+ ;;
+esac
+
+# If we're using GNU nm, then use its standard symbol codes.
+case `$NM -V 2>&1` in
+*GNU* | *'with BFD'*)
+ symcode='[ABCDGIRSTW]' ;;
+esac
+
+# Transform an extracted symbol line into a proper C declaration.
+# Some systems (esp. on ia64) link data and code symbols differently,
+# so use this general approach.
+lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
+
+# Transform an extracted symbol line into symbol name and symbol address
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([^ ]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([^ ]*\) $/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \(lib[^ ]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"lib\2\", (void *) \&\2},/p'"
+
+# Handle CRLF in mingw tool chain
+opt_cr=
+case $build_os in
+mingw*)
+ opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
+ ;;
+esac
+
+# Try without a prefix underscore, then with it.
+for ac_symprfx in "" "_"; do
+
+ # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
+ symxfrm="\\1 $ac_symprfx\\2 \\2"
+
+ # Write the raw and C identifiers.
+ if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+ # Fake it for dumpbin and say T for any non-static function
+ # and D for any global variable.
+ # Also find C++ and __fastcall symbols from MSVC++,
+ # which start with @ or ?.
+ lt_cv_sys_global_symbol_pipe="$AWK '"\
+" {last_section=section; section=\$ 3};"\
+" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
+" \$ 0!~/External *\|/{next};"\
+" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
+" {if(hide[section]) next};"\
+" {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
+" {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
+" s[1]~/^[@?]/{print s[1], s[1]; next};"\
+" s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
+" ' prfx=^$ac_symprfx"
+ else
+ lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[ ]\($symcode$symcode*\)[ ][ ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+ fi
+
+ # Check to see that the pipe works correctly.
+ pipe_works=no
+
+ rm -f conftest*
+ cat > conftest.$ac_ext <<_LT_EOF
+#ifdef __cplusplus
+extern "C" {
+#endif
+char nm_test_var;
+void nm_test_func(void);
+void nm_test_func(void){}
+#ifdef __cplusplus
+}
+#endif
+int main(){nm_test_var='a';nm_test_func();return(0);}
+_LT_EOF
+
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ # Now try to grab the symbols.
+ nlist=conftest.nm
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $nlist\""; } >&5
+ (eval $NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $nlist) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && test -s "$nlist"; then
+ # Try sorting and uniquifying the output.
+ if sort "$nlist" | uniq > "$nlist"T; then
+ mv -f "$nlist"T "$nlist"
+ else
+ rm -f "$nlist"T
+ fi
+
+ # Make sure that we snagged all the symbols we need.
+ if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
+ if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
+ cat <<_LT_EOF > conftest.$ac_ext
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_LT_EOF
+ # Now generate the symbol file.
+ eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
+
+ cat <<_LT_EOF >> conftest.$ac_ext
+
+/* The mapping between symbol names and symbols. */
+const struct {
+ const char *name;
+ void *address;
+}
+lt__PROGRAM__LTX_preloaded_symbols[] =
+{
+ { "@PROGRAM@", (void *) 0 },
+_LT_EOF
+ $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/ {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
+ cat <<\_LT_EOF >> conftest.$ac_ext
+ {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+ return lt__PROGRAM__LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+_LT_EOF
+ # Now try linking the two files.
+ mv conftest.$ac_objext conftstm.$ac_objext
+ lt_save_LIBS="$LIBS"
+ lt_save_CFLAGS="$CFLAGS"
+ LIBS="conftstm.$ac_objext"
+ CFLAGS="$CFLAGS$lt_prog_compiler_no_builtin_flag"
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && test -s conftest${ac_exeext}; then
+ pipe_works=yes
+ fi
+ LIBS="$lt_save_LIBS"
+ CFLAGS="$lt_save_CFLAGS"
+ else
+ echo "cannot find nm_test_func in $nlist" >&5
+ fi
+ else
+ echo "cannot find nm_test_var in $nlist" >&5
+ fi
+ else
+ echo "cannot run $lt_cv_sys_global_symbol_pipe" >&5
+ fi
+ else
+ echo "$progname: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ fi
+ rm -rf conftest* conftst*
+
+ # Do not use the global_symbol_pipe unless it works.
+ if test "$pipe_works" = yes; then
+ break
+ else
+ lt_cv_sys_global_symbol_pipe=
+ fi
+done
+
+fi
+
+if test -z "$lt_cv_sys_global_symbol_pipe"; then
+ lt_cv_sys_global_symbol_to_cdecl=
+fi
+if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: failed" >&5
+$as_echo "failed" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: ok" >&5
+$as_echo "ok" >&6; }
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# Check whether --enable-libtool-lock was given.
+if test "${enable_libtool_lock+set}" = set; then :
+ enableval=$enable_libtool_lock;
+fi
+
+test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
+
+# Some flags need to be propagated to the compiler or linker for good
+# libtool support.
+case $host in
+ia64-*-hpux*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ case `/usr/bin/file conftest.$ac_objext` in
+ *ELF-32*)
+ HPUX_IA64_MODE="32"
+ ;;
+ *ELF-64*)
+ HPUX_IA64_MODE="64"
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+*-*-irix6*)
+ # Find out which ABI we are using.
+ echo '#line 5706 "configure"' > conftest.$ac_ext
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ if test "$lt_cv_prog_gnu_ld" = yes; then
+ case `/usr/bin/file conftest.$ac_objext` in
+ *32-bit*)
+ LD="${LD-ld} -melf32bsmip"
+ ;;
+ *N32*)
+ LD="${LD-ld} -melf32bmipn32"
+ ;;
+ *64-bit*)
+ LD="${LD-ld} -melf64bmip"
+ ;;
+ esac
+ else
+ case `/usr/bin/file conftest.$ac_objext` in
+ *32-bit*)
+ LD="${LD-ld} -32"
+ ;;
+ *N32*)
+ LD="${LD-ld} -n32"
+ ;;
+ *64-bit*)
+ LD="${LD-ld} -64"
+ ;;
+ esac
+ fi
+ fi
+ rm -rf conftest*
+ ;;
+
+x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ case `/usr/bin/file conftest.o` in
+ *32-bit*)
+ case $host in
+ x86_64-*kfreebsd*-gnu)
+ LD="${LD-ld} -m elf_i386_fbsd"
+ ;;
+ x86_64-*linux*)
+ LD="${LD-ld} -m elf_i386"
+ ;;
+ ppc64-*linux*|powerpc64-*linux*)
+ LD="${LD-ld} -m elf32ppclinux"
+ ;;
+ s390x-*linux*)
+ LD="${LD-ld} -m elf_s390"
+ ;;
+ sparc64-*linux*)
+ LD="${LD-ld} -m elf32_sparc"
+ ;;
+ esac
+ ;;
+ *64-bit*)
+ case $host in
+ x86_64-*kfreebsd*-gnu)
+ LD="${LD-ld} -m elf_x86_64_fbsd"
+ ;;
+ x86_64-*linux*)
+ LD="${LD-ld} -m elf_x86_64"
+ ;;
+ ppc*-*linux*|powerpc*-*linux*)
+ LD="${LD-ld} -m elf64ppc"
+ ;;
+ s390*-*linux*|s390*-*tpf*)
+ LD="${LD-ld} -m elf64_s390"
+ ;;
+ sparc*-*linux*)
+ LD="${LD-ld} -m elf64_sparc"
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+
+*-*-sco3.2v5*)
+ # On SCO OpenServer 5, we need -belf to get full-featured binaries.
+ SAVE_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -belf"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler needs -belf" >&5
+$as_echo_n "checking whether the C compiler needs -belf... " >&6; }
+if test "${lt_cv_cc_needs_belf+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ lt_cv_cc_needs_belf=yes
+else
+ lt_cv_cc_needs_belf=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_cc_needs_belf" >&5
+$as_echo "$lt_cv_cc_needs_belf" >&6; }
+ if test x"$lt_cv_cc_needs_belf" != x"yes"; then
+ # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
+ CFLAGS="$SAVE_CFLAGS"
+ fi
+ ;;
+sparc*-*solaris*)
+ # Find out which ABI we are using.
+ echo 'int i;' > conftest.$ac_ext
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ case `/usr/bin/file conftest.o` in
+ *64-bit*)
+ case $lt_cv_prog_gnu_ld in
+ yes*) LD="${LD-ld} -m elf64_sparc" ;;
+ *)
+ if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
+ LD="${LD-ld} -64"
+ fi
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ rm -rf conftest*
+ ;;
+esac
+
+need_locks="$enable_libtool_lock"
+
+
+ case $host_os in
+ rhapsody* | darwin*)
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}dsymutil", so it can be a program name with args.
+set dummy ${ac_tool_prefix}dsymutil; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_DSYMUTIL+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$DSYMUTIL"; then
+ ac_cv_prog_DSYMUTIL="$DSYMUTIL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_DSYMUTIL="${ac_tool_prefix}dsymutil"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+DSYMUTIL=$ac_cv_prog_DSYMUTIL
+if test -n "$DSYMUTIL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL" >&5
+$as_echo "$DSYMUTIL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_DSYMUTIL"; then
+ ac_ct_DSYMUTIL=$DSYMUTIL
+ # Extract the first word of "dsymutil", so it can be a program name with args.
+set dummy dsymutil; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_DSYMUTIL+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_DSYMUTIL"; then
+ ac_cv_prog_ac_ct_DSYMUTIL="$ac_ct_DSYMUTIL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_DSYMUTIL="dsymutil"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DSYMUTIL=$ac_cv_prog_ac_ct_DSYMUTIL
+if test -n "$ac_ct_DSYMUTIL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DSYMUTIL" >&5
+$as_echo "$ac_ct_DSYMUTIL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_DSYMUTIL" = x; then
+ DSYMUTIL=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ DSYMUTIL=$ac_ct_DSYMUTIL
+ fi
+else
+ DSYMUTIL="$ac_cv_prog_DSYMUTIL"
+fi
+
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}nmedit", so it can be a program name with args.
+set dummy ${ac_tool_prefix}nmedit; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_NMEDIT+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$NMEDIT"; then
+ ac_cv_prog_NMEDIT="$NMEDIT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_NMEDIT="${ac_tool_prefix}nmedit"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+NMEDIT=$ac_cv_prog_NMEDIT
+if test -n "$NMEDIT"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NMEDIT" >&5
+$as_echo "$NMEDIT" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_NMEDIT"; then
+ ac_ct_NMEDIT=$NMEDIT
+ # Extract the first word of "nmedit", so it can be a program name with args.
+set dummy nmedit; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_NMEDIT+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_NMEDIT"; then
+ ac_cv_prog_ac_ct_NMEDIT="$ac_ct_NMEDIT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_NMEDIT="nmedit"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_NMEDIT=$ac_cv_prog_ac_ct_NMEDIT
+if test -n "$ac_ct_NMEDIT"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NMEDIT" >&5
+$as_echo "$ac_ct_NMEDIT" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_NMEDIT" = x; then
+ NMEDIT=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ NMEDIT=$ac_ct_NMEDIT
+ fi
+else
+ NMEDIT="$ac_cv_prog_NMEDIT"
+fi
+
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}lipo", so it can be a program name with args.
+set dummy ${ac_tool_prefix}lipo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_LIPO+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$LIPO"; then
+ ac_cv_prog_LIPO="$LIPO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_LIPO="${ac_tool_prefix}lipo"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+LIPO=$ac_cv_prog_LIPO
+if test -n "$LIPO"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIPO" >&5
+$as_echo "$LIPO" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_LIPO"; then
+ ac_ct_LIPO=$LIPO
+ # Extract the first word of "lipo", so it can be a program name with args.
+set dummy lipo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_LIPO+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_LIPO"; then
+ ac_cv_prog_ac_ct_LIPO="$ac_ct_LIPO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_LIPO="lipo"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_LIPO=$ac_cv_prog_ac_ct_LIPO
+if test -n "$ac_ct_LIPO"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_LIPO" >&5
+$as_echo "$ac_ct_LIPO" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_LIPO" = x; then
+ LIPO=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ LIPO=$ac_ct_LIPO
+ fi
+else
+ LIPO="$ac_cv_prog_LIPO"
+fi
+
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}otool", so it can be a program name with args.
+set dummy ${ac_tool_prefix}otool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OTOOL+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$OTOOL"; then
+ ac_cv_prog_OTOOL="$OTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_OTOOL="${ac_tool_prefix}otool"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+OTOOL=$ac_cv_prog_OTOOL
+if test -n "$OTOOL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL" >&5
+$as_echo "$OTOOL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OTOOL"; then
+ ac_ct_OTOOL=$OTOOL
+ # Extract the first word of "otool", so it can be a program name with args.
+set dummy otool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_OTOOL+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_OTOOL"; then
+ ac_cv_prog_ac_ct_OTOOL="$ac_ct_OTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_OTOOL="otool"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OTOOL=$ac_cv_prog_ac_ct_OTOOL
+if test -n "$ac_ct_OTOOL"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL" >&5
+$as_echo "$ac_ct_OTOOL" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_OTOOL" = x; then
+ OTOOL=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ OTOOL=$ac_ct_OTOOL
+ fi
+else
+ OTOOL="$ac_cv_prog_OTOOL"
+fi
+
+ if test -n "$ac_tool_prefix"; then
+ # Extract the first word of "${ac_tool_prefix}otool64", so it can be a program name with args.
+set dummy ${ac_tool_prefix}otool64; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_OTOOL64+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$OTOOL64"; then
+ ac_cv_prog_OTOOL64="$OTOOL64" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_OTOOL64="${ac_tool_prefix}otool64"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+OTOOL64=$ac_cv_prog_OTOOL64
+if test -n "$OTOOL64"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL64" >&5
+$as_echo "$OTOOL64" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OTOOL64"; then
+ ac_ct_OTOOL64=$OTOOL64
+ # Extract the first word of "otool64", so it can be a program name with args.
+set dummy otool64; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_OTOOL64+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test -n "$ac_ct_OTOOL64"; then
+ ac_cv_prog_ac_ct_OTOOL64="$ac_ct_OTOOL64" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ ac_cv_prog_ac_ct_OTOOL64="otool64"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
+ done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OTOOL64=$ac_cv_prog_ac_ct_OTOOL64
+if test -n "$ac_ct_OTOOL64"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL64" >&5
+$as_echo "$ac_ct_OTOOL64" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+ if test "x$ac_ct_OTOOL64" = x; then
+ OTOOL64=":"
+ else
+ case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+ OTOOL64=$ac_ct_OTOOL64
+ fi
+else
+ OTOOL64="$ac_cv_prog_OTOOL64"
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -single_module linker flag" >&5
+$as_echo_n "checking for -single_module linker flag... " >&6; }
+if test "${lt_cv_apple_cc_single_mod+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_apple_cc_single_mod=no
+ if test -z "${LT_MULTI_MODULE}"; then
+ # By default we will add the -single_module flag. You can override
+ # by either setting the environment variable LT_MULTI_MODULE
+ # non-empty at configure time, or by adding -multi_module to the
+ # link flags.
+ rm -rf libconftest.dylib*
+ echo "int foo(void){return 1;}" > conftest.c
+ echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+-dynamiclib -Wl,-single_module conftest.c" >&5
+ $LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+ -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
+ _lt_result=$?
+ if test -f libconftest.dylib && test ! -s conftest.err && test $_lt_result = 0; then
+ lt_cv_apple_cc_single_mod=yes
+ else
+ cat conftest.err >&5
+ fi
+ rm -rf libconftest.dylib*
+ rm -f conftest.*
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_apple_cc_single_mod" >&5
+$as_echo "$lt_cv_apple_cc_single_mod" >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -exported_symbols_list linker flag" >&5
+$as_echo_n "checking for -exported_symbols_list linker flag... " >&6; }
+if test "${lt_cv_ld_exported_symbols_list+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_ld_exported_symbols_list=no
+ save_LDFLAGS=$LDFLAGS
+ echo "_main" > conftest.sym
+ LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ lt_cv_ld_exported_symbols_list=yes
+else
+ lt_cv_ld_exported_symbols_list=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_exported_symbols_list" >&5
+$as_echo "$lt_cv_ld_exported_symbols_list" >&6; }
+ case $host_os in
+ rhapsody* | darwin1.[012])
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
+ darwin1.*)
+ _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+ darwin*) # darwin 5.x on
+ # if running on 10.5 or later, the deployment target defaults
+ # to the OS version, if on x86, and 10.4, the deployment
+ # target defaults to 10.4. Don't you love it?
+ case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
+ 10.0,*86*-darwin8*|10.0,*-darwin[91]*)
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+ 10.[012]*)
+ _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+ 10.*)
+ _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+ esac
+ ;;
+ esac
+ if test "$lt_cv_apple_cc_single_mod" = "yes"; then
+ _lt_dar_single_mod='$single_module'
+ fi
+ if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
+ _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
+ else
+ _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
+ fi
+ if test "$DSYMUTIL" != ":"; then
+ _lt_dsymutil='~$DSYMUTIL $lib || :'
+ else
+ _lt_dsymutil=
+ fi
+ ;;
+ esac
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+$as_echo_n "checking how to run the C preprocessor... " >&6; }
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+ CPP=
+fi
+if test -z "$CPP"; then
+ if test "${ac_cv_prog_CPP+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ # Double quotes because CPP needs to be expanded
+ for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+ do
+ ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+ # Use a header file that comes with gcc, so configuring glibc
+ # with a fresh cross-compiler works.
+ # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+ # <limits.h> exists even on freestanding compilers.
+ # On the NeXT, cc -E runs the code through the compiler's parser,
+ # not just through cpp. "Syntax error" is here to catch this case.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+ Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+ # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+ # OK, works on sane cases. Now check whether nonexistent headers
+ # can be detected and how.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ # Broken: success on invalid input.
+continue
+else
+ # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+ break
+fi
+
+ done
+ ac_cv_prog_CPP=$CPP
+
+fi
+ CPP=$ac_cv_prog_CPP
+else
+ ac_cv_prog_CPP=$CPP
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+$as_echo "$CPP" >&6; }
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+ # Use a header file that comes with gcc, so configuring glibc
+ # with a fresh cross-compiler works.
+ # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+ # <limits.h> exists even on freestanding compilers.
+ # On the NeXT, cc -E runs the code through the compiler's parser,
+ # not just through cpp. "Syntax error" is here to catch this case.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+ Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+ # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+ # OK, works on sane cases. Now check whether nonexistent headers
+ # can be detected and how.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+ # Broken: success on invalid input.
+continue
+else
+ # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+
+else
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details" "$LINENO" 5 ; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+$as_echo_n "checking for ANSI C header files... " >&6; }
+if test "${ac_cv_header_stdc+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ ac_cv_header_stdc=yes
+else
+ ac_cv_header_stdc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+ # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "memchr" >/dev/null 2>&1; then :
+
+else
+ ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+ # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "free" >/dev/null 2>&1; then :
+
+else
+ ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+ # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+ if test "$cross_compiling" = yes; then :
+ :
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <ctype.h>
+#include <stdlib.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+ (('a' <= (c) && (c) <= 'i') \
+ || ('j' <= (c) && (c) <= 'r') \
+ || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+ int i;
+ for (i = 0; i < 256; i++)
+ if (XOR (islower (i), ISLOWER (i))
+ || toupper (i) != TOUPPER (i))
+ return 2;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+else
+ ac_cv_header_stdc=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+ conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+$as_echo "$ac_cv_header_stdc" >&6; }
+if test $ac_cv_header_stdc = yes; then
+
+$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+ inttypes.h stdint.h unistd.h
+do :
+ as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
+"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+ cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in dlfcn.h
+do :
+ ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default
+"
+if test "x$ac_cv_header_dlfcn_h" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_DLFCN_H 1
+_ACEOF
+
+fi
+
+done
+
+
+
+# Set options
+
+
+
+ enable_dlopen=no
+
+
+ enable_win32_dll=no
+
+
+ # Check whether --enable-shared was given.
+if test "${enable_shared+set}" = set; then :
+ enableval=$enable_shared; p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_shared=yes ;;
+ no) enable_shared=no ;;
+ *)
+ enable_shared=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_shared=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac
+else
+ enable_shared=yes
+fi
+
+
+
+
+
+
+
+
+
+ # Check whether --enable-static was given.
+if test "${enable_static+set}" = set; then :
+ enableval=$enable_static; p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_static=yes ;;
+ no) enable_static=no ;;
+ *)
+ enable_static=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_static=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac
+else
+ enable_static=yes
+fi
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-pic was given.
+if test "${with_pic+set}" = set; then :
+ withval=$with_pic; pic_mode="$withval"
+else
+ pic_mode=default
+fi
+
+
+test -z "$pic_mode" && pic_mode=default
+
+
+
+
+
+
+
+ # Check whether --enable-fast-install was given.
+if test "${enable_fast_install+set}" = set; then :
+ enableval=$enable_fast_install; p=${PACKAGE-default}
+ case $enableval in
+ yes) enable_fast_install=yes ;;
+ no) enable_fast_install=no ;;
+ *)
+ enable_fast_install=no
+ # Look at the argument we got. We use all the common list separators.
+ lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+ for pkg in $enableval; do
+ IFS="$lt_save_ifs"
+ if test "X$pkg" = "X$p"; then
+ enable_fast_install=yes
+ fi
+ done
+ IFS="$lt_save_ifs"
+ ;;
+ esac
+else
+ enable_fast_install=yes
+fi
+
+
+
+
+
+
+
+
+
+
+
+# This can be used to rebuild libtool when needed
+LIBTOOL_DEPS="$ltmain"
+
+# Always use our own libtool.
+LIBTOOL='$(SHELL) $(top_builddir)/libtool'
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+test -z "$LN_S" && LN_S="ln -s"
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+if test -n "${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for objdir" >&5
+$as_echo_n "checking for objdir... " >&6; }
+if test "${lt_cv_objdir+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ rm -f .libs 2>/dev/null
+mkdir .libs 2>/dev/null
+if test -d .libs; then
+ lt_cv_objdir=.libs
+else
+ # MS-DOS does not allow filenames that begin with a dot.
+ lt_cv_objdir=_libs
+fi
+rmdir .libs 2>/dev/null
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_objdir" >&5
+$as_echo "$lt_cv_objdir" >&6; }
+objdir=$lt_cv_objdir
+
+
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define LT_OBJDIR "$lt_cv_objdir/"
+_ACEOF
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+case $host_os in
+aix3*)
+ # AIX sometimes has problems with the GCC collect2 program. For some
+ # reason, if we set the COLLECT_NAMES environment variable, the problems
+ # vanish in a puff of smoke.
+ if test "X${COLLECT_NAMES+set}" != Xset; then
+ COLLECT_NAMES=
+ export COLLECT_NAMES
+ fi
+ ;;
+esac
+
+# Sed substitution that helps us do robust quoting. It backslashifies
+# metacharacters that are still active within double-quoted strings.
+sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\(["`\\]\)/\\\1/g'
+
+# Sed substitution to delay expansion of an escaped shell variable in a
+# double_quote_subst'ed string.
+delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
+
+# Sed substitution to delay expansion of an escaped single quote.
+delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
+
+# Sed substitution to avoid accidental globbing in evaled expressions
+no_glob_subst='s/\*/\\\*/g'
+
+# Global variables:
+ofile=libtool
+can_build_shared=yes
+
+# All known linkers require a `.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+
+with_gnu_ld="$lt_cv_prog_gnu_ld"
+
+old_CC="$CC"
+old_CFLAGS="$CFLAGS"
+
+# Set sane defaults for various variables
+test -z "$CC" && CC=cc
+test -z "$LTCC" && LTCC=$CC
+test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
+test -z "$LD" && LD=ld
+test -z "$ac_objext" && ac_objext=o
+
+for cc_temp in $compiler""; do
+ case $cc_temp in
+ compile | *[\\/]compile | ccache | *[\\/]ccache ) ;;
+ distcc | *[\\/]distcc | purify | *[\\/]purify ) ;;
+ \-*) ;;
+ *) break;;
+ esac
+done
+cc_basename=`$ECHO "X$cc_temp" | $Xsed -e 's%.*/%%' -e "s%^$host_alias-%%"`
+
+
+# Only perform the check for file, if the check method requires it
+test -z "$MAGIC_CMD" && MAGIC_CMD=file
+case $deplibs_check_method in
+file_magic*)
+ if test "$file_magic_cmd" = '$MAGIC_CMD'; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${ac_tool_prefix}file" >&5
+$as_echo_n "checking for ${ac_tool_prefix}file... " >&6; }
+if test "${lt_cv_path_MAGIC_CMD+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ case $MAGIC_CMD in
+[\\/*] | ?:[\\/]*)
+ lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+ ;;
+*)
+ lt_save_MAGIC_CMD="$MAGIC_CMD"
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
+ for ac_dir in $ac_dummy; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/${ac_tool_prefix}file; then
+ lt_cv_path_MAGIC_CMD="$ac_dir/${ac_tool_prefix}file"
+ if test -n "$file_magic_test_file"; then
+ case $deplibs_check_method in
+ "file_magic "*)
+ file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+ MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+ if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+ $EGREP "$file_magic_regex" > /dev/null; then
+ :
+ else
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such. This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem. Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+ fi ;;
+ esac
+ fi
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+ MAGIC_CMD="$lt_save_MAGIC_CMD"
+ ;;
+esac
+fi
+
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
+$as_echo "$MAGIC_CMD" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+
+
+
+if test -z "$lt_cv_path_MAGIC_CMD"; then
+ if test -n "$ac_tool_prefix"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for file" >&5
+$as_echo_n "checking for file... " >&6; }
+if test "${lt_cv_path_MAGIC_CMD+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ case $MAGIC_CMD in
+[\\/*] | ?:[\\/]*)
+ lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+ ;;
+*)
+ lt_save_MAGIC_CMD="$MAGIC_CMD"
+ lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+ ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
+ for ac_dir in $ac_dummy; do
+ IFS="$lt_save_ifs"
+ test -z "$ac_dir" && ac_dir=.
+ if test -f $ac_dir/file; then
+ lt_cv_path_MAGIC_CMD="$ac_dir/file"
+ if test -n "$file_magic_test_file"; then
+ case $deplibs_check_method in
+ "file_magic "*)
+ file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+ MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+ if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+ $EGREP "$file_magic_regex" > /dev/null; then
+ :
+ else
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such. This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem. Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+ fi ;;
+ esac
+ fi
+ break
+ fi
+ done
+ IFS="$lt_save_ifs"
+ MAGIC_CMD="$lt_save_MAGIC_CMD"
+ ;;
+esac
+fi
+
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
+$as_echo "$MAGIC_CMD" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ else
+ MAGIC_CMD=:
+ fi
+fi
+
+ fi
+ ;;
+esac
+
+# Use C for the default configuration in the libtool script
+
+lt_save_CC="$CC"
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+# Source file extension for C test sources.
+ac_ext=c
+
+# Object file extension for compiled C test sources.
+objext=o
+objext=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="int some_variable = 0;"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='int main(){return(0);}'
+
+
+
+
+
+
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+
+# Save the default compiler, since it gets overwritten when the other
+# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
+compiler_DEFAULT=$CC
+
+# save warnings/boilerplate of simple test code
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_compile_test_code" >conftest.$ac_ext
+eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_compiler_boilerplate=`cat conftest.err`
+$RM conftest*
+
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_link_test_code" >conftest.$ac_ext
+eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_linker_boilerplate=`cat conftest.err`
+$RM -r conftest*
+
+
+if test -n "$compiler"; then
+
+lt_prog_compiler_no_builtin_flag=
+
+if test "$GCC" = yes; then
+ lt_prog_compiler_no_builtin_flag=' -fno-builtin'
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -fno-rtti -fno-exceptions" >&5
+$as_echo_n "checking if $compiler supports -fno-rtti -fno-exceptions... " >&6; }
+if test "${lt_cv_prog_compiler_rtti_exceptions+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_prog_compiler_rtti_exceptions=no
+ ac_outfile=conftest.$ac_objext
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+ lt_compiler_flag="-fno-rtti -fno-exceptions"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ # The option is referenced via a variable to avoid confusing sed.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:7231: $lt_compile\"" >&5)
+ (eval "$lt_compile" 2>conftest.err)
+ ac_status=$?
+ cat conftest.err >&5
+ echo "$as_me:7235: \$? = $ac_status" >&5
+ if (exit $ac_status) && test -s "$ac_outfile"; then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings other than the usual output.
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' >conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+ lt_cv_prog_compiler_rtti_exceptions=yes
+ fi
+ fi
+ $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_rtti_exceptions" >&5
+$as_echo "$lt_cv_prog_compiler_rtti_exceptions" >&6; }
+
+if test x"$lt_cv_prog_compiler_rtti_exceptions" = xyes; then
+ lt_prog_compiler_no_builtin_flag="$lt_prog_compiler_no_builtin_flag -fno-rtti -fno-exceptions"
+else
+ :
+fi
+
+fi
+
+
+
+
+
+
+ lt_prog_compiler_wl=
+lt_prog_compiler_pic=
+lt_prog_compiler_static=
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $compiler option to produce PIC" >&5
+$as_echo_n "checking for $compiler option to produce PIC... " >&6; }
+
+ if test "$GCC" = yes; then
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_static='-static'
+
+ case $host_os in
+ aix*)
+ # All AIX code is PIC.
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ lt_prog_compiler_static='-Bstatic'
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ lt_prog_compiler_pic='-fPIC'
+ ;;
+ m68k)
+ # FIXME: we need at least 68020 code to build shared libraries, but
+ # adding the `-m68020' flag to GCC prevents building anything better,
+ # like `-m68040'.
+ lt_prog_compiler_pic='-m68020 -resident32 -malways-restore-a4'
+ ;;
+ esac
+ ;;
+
+ beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+ # PIC is the default for these OSes.
+ ;;
+
+ mingw* | cygwin* | pw32* | os2* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ # Although the cygwin gcc ignores -fPIC, still need this for old-style
+ # (--disable-auto-import) libraries
+ lt_prog_compiler_pic='-DDLL_EXPORT'
+ ;;
+
+ darwin* | rhapsody*)
+ # PIC is the default on this platform
+ # Common symbols not allowed in MH_DYLIB files
+ lt_prog_compiler_pic='-fno-common'
+ ;;
+
+ hpux*)
+ # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+ # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag
+ # sets the default TLS model and affects inlining.
+ case $host_cpu in
+ hppa*64*)
+ # +Z the default
+ ;;
+ *)
+ lt_prog_compiler_pic='-fPIC'
+ ;;
+ esac
+ ;;
+
+ interix[3-9]*)
+ # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+ # Instead, we relocate shared libraries at runtime.
+ ;;
+
+ msdosdjgpp*)
+ # Just because we use GCC doesn't mean we suddenly get shared libraries
+ # on systems that don't support them.
+ lt_prog_compiler_can_build_shared=no
+ enable_shared=no
+ ;;
+
+ *nto* | *qnx*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ lt_prog_compiler_pic='-fPIC -shared'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ lt_prog_compiler_pic=-Kconform_pic
+ fi
+ ;;
+
+ *)
+ lt_prog_compiler_pic='-fPIC'
+ ;;
+ esac
+ else
+ # PORTME Check for flag to pass linker flags through the system compiler.
+ case $host_os in
+ aix*)
+ lt_prog_compiler_wl='-Wl,'
+ if test "$host_cpu" = ia64; then
+ # AIX 5 now supports IA64 processor
+ lt_prog_compiler_static='-Bstatic'
+ else
+ lt_prog_compiler_static='-bnso -bI:/lib/syscalls.exp'
+ fi
+ ;;
+
+ mingw* | cygwin* | pw32* | os2* | cegcc*)
+ # This hack is so that the source file can tell whether it is being
+ # built for inclusion in a dll (and should export symbols for example).
+ lt_prog_compiler_pic='-DDLL_EXPORT'
+ ;;
+
+ hpux9* | hpux10* | hpux11*)
+ lt_prog_compiler_wl='-Wl,'
+ # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
+ # not for PA HP-UX.
+ case $host_cpu in
+ hppa*64*|ia64*)
+ # +Z the default
+ ;;
+ *)
+ lt_prog_compiler_pic='+Z'
+ ;;
+ esac
+ # Is there a better lt_prog_compiler_static that works with the bundled CC?
+ lt_prog_compiler_static='${wl}-a ${wl}archive'
+ ;;
+
+ irix5* | irix6* | nonstopux*)
+ lt_prog_compiler_wl='-Wl,'
+ # PIC (with -KPIC) is the default.
+ lt_prog_compiler_static='-non_shared'
+ ;;
+
+ linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ case $cc_basename in
+ # old Intel for x86_64 which still supported -KPIC.
+ ecc*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-static'
+ ;;
+ # icc used to be incompatible with GCC.
+ # ICC 10 doesn't accept -KPIC any more.
+ icc* | ifort*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-fPIC'
+ lt_prog_compiler_static='-static'
+ ;;
+ # Lahey Fortran 8.1.
+ lf95*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='--shared'
+ lt_prog_compiler_static='--static'
+ ;;
+ pgcc* | pgf77* | pgf90* | pgf95*)
+ # Portland Group compilers (*not* the Pentium gcc compiler,
+ # which looks to be a dead project)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-fpic'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+ ccc*)
+ lt_prog_compiler_wl='-Wl,'
+ # All Alpha code is PIC.
+ lt_prog_compiler_static='-non_shared'
+ ;;
+ xl*)
+ # IBM XL C 8.0/Fortran 10.1 on PPC
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-qpic'
+ lt_prog_compiler_static='-qstaticlink'
+ ;;
+ *)
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*)
+ # Sun C 5.9
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ lt_prog_compiler_wl='-Wl,'
+ ;;
+ *Sun\ F*)
+ # Sun Fortran 8.3 passes all unrecognized flags to the linker
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ lt_prog_compiler_wl=''
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+
+ newsos6)
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+
+ *nto* | *qnx*)
+ # QNX uses GNU C++, but need to define -shared option too, otherwise
+ # it will coredump.
+ lt_prog_compiler_pic='-fPIC -shared'
+ ;;
+
+ osf3* | osf4* | osf5*)
+ lt_prog_compiler_wl='-Wl,'
+ # All OSF/1 code is PIC.
+ lt_prog_compiler_static='-non_shared'
+ ;;
+
+ rdos*)
+ lt_prog_compiler_static='-non_shared'
+ ;;
+
+ solaris*)
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ case $cc_basename in
+ f77* | f90* | f95*)
+ lt_prog_compiler_wl='-Qoption ld ';;
+ *)
+ lt_prog_compiler_wl='-Wl,';;
+ esac
+ ;;
+
+ sunos4*)
+ lt_prog_compiler_wl='-Qoption ld '
+ lt_prog_compiler_pic='-PIC'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+
+ sysv4 | sysv4.2uw2* | sysv4.3*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec ;then
+ lt_prog_compiler_pic='-Kconform_pic'
+ lt_prog_compiler_static='-Bstatic'
+ fi
+ ;;
+
+ sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_pic='-KPIC'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+
+ unicos*)
+ lt_prog_compiler_wl='-Wl,'
+ lt_prog_compiler_can_build_shared=no
+ ;;
+
+ uts4*)
+ lt_prog_compiler_pic='-pic'
+ lt_prog_compiler_static='-Bstatic'
+ ;;
+
+ *)
+ lt_prog_compiler_can_build_shared=no
+ ;;
+ esac
+ fi
+
+case $host_os in
+ # For platforms which do not support PIC, -DPIC is meaningless:
+ *djgpp*)
+ lt_prog_compiler_pic=
+ ;;
+ *)
+ lt_prog_compiler_pic="$lt_prog_compiler_pic -DPIC"
+ ;;
+esac
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_prog_compiler_pic" >&5
+$as_echo "$lt_prog_compiler_pic" >&6; }
+
+
+
+
+
+
+#
+# Check to make sure the PIC flag actually works.
+#
+if test -n "$lt_prog_compiler_pic"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler PIC flag $lt_prog_compiler_pic works" >&5
+$as_echo_n "checking if $compiler PIC flag $lt_prog_compiler_pic works... " >&6; }
+if test "${lt_cv_prog_compiler_pic_works+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_prog_compiler_pic_works=no
+ ac_outfile=conftest.$ac_objext
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+ lt_compiler_flag="$lt_prog_compiler_pic -DPIC"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ # The option is referenced via a variable to avoid confusing sed.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:7570: $lt_compile\"" >&5)
+ (eval "$lt_compile" 2>conftest.err)
+ ac_status=$?
+ cat conftest.err >&5
+ echo "$as_me:7574: \$? = $ac_status" >&5
+ if (exit $ac_status) && test -s "$ac_outfile"; then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings other than the usual output.
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' >conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+ lt_cv_prog_compiler_pic_works=yes
+ fi
+ fi
+ $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic_works" >&5
+$as_echo "$lt_cv_prog_compiler_pic_works" >&6; }
+
+if test x"$lt_cv_prog_compiler_pic_works" = xyes; then
+ case $lt_prog_compiler_pic in
+ "" | " "*) ;;
+ *) lt_prog_compiler_pic=" $lt_prog_compiler_pic" ;;
+ esac
+else
+ lt_prog_compiler_pic=
+ lt_prog_compiler_can_build_shared=no
+fi
+
+fi
+
+
+
+
+
+
+#
+# Check to make sure the static flag actually works.
+#
+wl=$lt_prog_compiler_wl eval lt_tmp_static_flag=\"$lt_prog_compiler_static\"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler static flag $lt_tmp_static_flag works" >&5
+$as_echo_n "checking if $compiler static flag $lt_tmp_static_flag works... " >&6; }
+if test "${lt_cv_prog_compiler_static_works+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_prog_compiler_static_works=no
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS $lt_tmp_static_flag"
+ echo "$lt_simple_link_test_code" > conftest.$ac_ext
+ if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+ # The linker can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ if test -s conftest.err; then
+ # Append any errors to the config.log.
+ cat conftest.err 1>&5
+ $ECHO "X$_lt_linker_boilerplate" | $Xsed -e '/^$/d' > conftest.exp
+ $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+ if diff conftest.exp conftest.er2 >/dev/null; then
+ lt_cv_prog_compiler_static_works=yes
+ fi
+ else
+ lt_cv_prog_compiler_static_works=yes
+ fi
+ fi
+ $RM -r conftest*
+ LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_static_works" >&5
+$as_echo "$lt_cv_prog_compiler_static_works" >&6; }
+
+if test x"$lt_cv_prog_compiler_static_works" = xyes; then
+ :
+else
+ lt_prog_compiler_static=
+fi
+
+
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
+$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
+if test "${lt_cv_prog_compiler_c_o+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_prog_compiler_c_o=no
+ $RM -r conftest 2>/dev/null
+ mkdir conftest
+ cd conftest
+ mkdir out
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ lt_compiler_flag="-o out/conftest2.$ac_objext"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:7675: $lt_compile\"" >&5)
+ (eval "$lt_compile" 2>out/conftest.err)
+ ac_status=$?
+ cat out/conftest.err >&5
+ echo "$as_me:7679: \$? = $ac_status" >&5
+ if (exit $ac_status) && test -s out/conftest2.$ac_objext
+ then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' > out/conftest.exp
+ $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+ if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+ lt_cv_prog_compiler_c_o=yes
+ fi
+ fi
+ chmod u+w . 2>&5
+ $RM conftest*
+ # SGI C++ compiler will create directory out/ii_files/ for
+ # template instantiation
+ test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+ $RM out/* && rmdir out
+ cd ..
+ $RM -r conftest
+ $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5
+$as_echo "$lt_cv_prog_compiler_c_o" >&6; }
+
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
+$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
+if test "${lt_cv_prog_compiler_c_o+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ lt_cv_prog_compiler_c_o=no
+ $RM -r conftest 2>/dev/null
+ mkdir conftest
+ cd conftest
+ mkdir out
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ lt_compiler_flag="-o out/conftest2.$ac_objext"
+ # Insert the option either (1) after the last *FLAGS variable, or
+ # (2) before a word containing "conftest.", or (3) at the end.
+ # Note that $ac_compile itself does not contain backslashes and begins
+ # with a dollar sign (not a hyphen), so the echo should work correctly.
+ lt_compile=`echo "$ac_compile" | $SED \
+ -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+ -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+ -e 's:$: $lt_compiler_flag:'`
+ (eval echo "\"\$as_me:7730: $lt_compile\"" >&5)
+ (eval "$lt_compile" 2>out/conftest.err)
+ ac_status=$?
+ cat out/conftest.err >&5
+ echo "$as_me:7734: \$? = $ac_status" >&5
+ if (exit $ac_status) && test -s out/conftest2.$ac_objext
+ then
+ # The compiler can only warn and ignore the option if not recognized
+ # So say no if there are warnings
+ $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' > out/conftest.exp
+ $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+ if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+ lt_cv_prog_compiler_c_o=yes
+ fi
+ fi
+ chmod u+w . 2>&5
+ $RM conftest*
+ # SGI C++ compiler will create directory out/ii_files/ for
+ # template instantiation
+ test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+ $RM out/* && rmdir out
+ cd ..
+ $RM -r conftest
+ $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5
+$as_echo "$lt_cv_prog_compiler_c_o" >&6; }
+
+
+
+
+hard_links="nottested"
+if test "$lt_cv_prog_compiler_c_o" = no && test "$need_locks" != no; then
+ # do not overwrite the value of need_locks provided by the user
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can lock with hard links" >&5
+$as_echo_n "checking if we can lock with hard links... " >&6; }
+ hard_links=yes
+ $RM conftest*
+ ln conftest.a conftest.b 2>/dev/null && hard_links=no
+ touch conftest.a
+ ln conftest.a conftest.b 2>&5 || hard_links=no
+ ln conftest.a conftest.b 2>/dev/null && hard_links=no
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $hard_links" >&5
+$as_echo "$hard_links" >&6; }
+ if test "$hard_links" = no; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&5
+$as_echo "$as_me: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&2;}
+ need_locks=warn
+ fi
+else
+ need_locks=no
+fi
+
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $compiler linker ($LD) supports shared libraries" >&5
+$as_echo_n "checking whether the $compiler linker ($LD) supports shared libraries... " >&6; }
+
+ runpath_var=
+ allow_undefined_flag=
+ always_export_symbols=no
+ archive_cmds=
+ archive_expsym_cmds=
+ compiler_needs_object=no
+ enable_shared_with_static_runtimes=no
+ export_dynamic_flag_spec=
+ export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+ hardcode_automatic=no
+ hardcode_direct=no
+ hardcode_direct_absolute=no
+ hardcode_libdir_flag_spec=
+ hardcode_libdir_flag_spec_ld=
+ hardcode_libdir_separator=
+ hardcode_minus_L=no
+ hardcode_shlibpath_var=unsupported
+ inherit_rpath=no
+ link_all_deplibs=unknown
+ module_cmds=
+ module_expsym_cmds=
+ old_archive_from_new_cmds=
+ old_archive_from_expsyms_cmds=
+ thread_safe_flag_spec=
+ whole_archive_flag_spec=
+ # include_expsyms should be a list of space-separated symbols to be *always*
+ # included in the symbol list
+ include_expsyms=
+ # exclude_expsyms can be an extended regexp of symbols to exclude
+ # it will be wrapped by ` (' and `)$', so one must not match beginning or
+ # end of line. Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
+ # as well as any symbol that contains `d'.
+ exclude_expsyms='_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*'
+ # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+ # platforms (ab)use it in PIC code, but their linkers get confused if
+ # the symbol is explicitly referenced. Since portable code cannot
+ # rely on this symbol name, it's probably fine to never include it in
+ # preloaded symbol tables.
+ # Exclude shared library initialization/finalization symbols.
+ extract_expsyms_cmds=
+
+ case $host_os in
+ cygwin* | mingw* | pw32* | cegcc*)
+ # FIXME: the MSVC++ port hasn't been tested in a loooong time
+ # When not using gcc, we currently assume that we are using
+ # Microsoft Visual C++.
+ if test "$GCC" != yes; then
+ with_gnu_ld=no
+ fi
+ ;;
+ interix*)
+ # we just hope/assume this is gcc and not c89 (= MSVC++)
+ with_gnu_ld=yes
+ ;;
+ openbsd*)
+ with_gnu_ld=no
+ ;;
+ linux* | k*bsd*-gnu)
+ link_all_deplibs=no
+ ;;
+ esac
+
+ ld_shlibs=yes
+ if test "$with_gnu_ld" = yes; then
+ # If archive_cmds runs LD, not CC, wlarc should be empty
+ wlarc='${wl}'
+
+ # Set some defaults for GNU ld with shared library support. These
+ # are reset later if shared libraries are not supported. Putting them
+ # here allows them to be overridden if necessary.
+ runpath_var=LD_RUN_PATH
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ export_dynamic_flag_spec='${wl}--export-dynamic'
+ # ancient GNU ld didn't support --whole-archive et. al.
+ if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
+ whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+ else
+ whole_archive_flag_spec=
+ fi
+ supports_anon_versioning=no
+ case `$LD -v 2>&1` in
+ *GNU\ gold*) supports_anon_versioning=yes ;;
+ *\ [01].* | *\ 2.[0-9].* | *\ 2.10.*) ;; # catch versions < 2.11
+ *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
+ *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
+ *\ 2.11.*) ;; # other 2.11 versions
+ *) supports_anon_versioning=yes ;;
+ esac
+
+ # See if GNU ld supports shared libraries.
+ case $host_os in
+ aix[3-9]*)
+ # On AIX/PPC, the GNU linker is very broken
+ if test "$host_cpu" != ia64; then
+ ld_shlibs=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: the GNU linker, at least up to release 2.9.1, is reported
+*** to be unable to reliably create shared libraries on AIX.
+*** Therefore, libtool is disabling shared libraries support. If you
+*** really care for shared libraries, you may want to modify your PATH
+*** so that a non-GNU linker is found, and then restart.
+
+_LT_EOF
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds=''
+ ;;
+ m68k)
+ archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_minus_L=yes
+ ;;
+ esac
+ ;;
+
+ beos*)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ allow_undefined_flag=unsupported
+ # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+ # support --undefined. This deserves some investigation. FIXME
+ archive_cmds='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ else
+ ld_shlibs=no
+ fi
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # _LT_TAGVAR(hardcode_libdir_flag_spec, ) is actually meaningless,
+ # as there is no search path for DLLs.
+ hardcode_libdir_flag_spec='-L$libdir'
+ allow_undefined_flag=unsupported
+ always_export_symbols=no
+ enable_shared_with_static_runtimes=yes
+ export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1 DATA/'\'' | $SED -e '\''/^[AITW][ ]/s/.*[ ]//'\'' | sort | uniq > $export_symbols'
+
+ if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ # If the export-symbols file already is a .def file (1st line
+ # is EXPORTS), use it as is; otherwise, prepend...
+ archive_expsym_cmds='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+ cp $export_symbols $output_objdir/$soname.def;
+ else
+ echo EXPORTS > $output_objdir/$soname.def;
+ cat $export_symbols >> $output_objdir/$soname.def;
+ fi~
+ $CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+ else
+ ld_shlibs=no
+ fi
+ ;;
+
+ interix[3-9]*)
+ hardcode_direct=no
+ hardcode_shlibpath_var=no
+ hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+ export_dynamic_flag_spec='${wl}-E'
+ # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+ # Instead, shared libraries are loaded at an image base (0x10000000 by
+ # default) and relocated if they conflict, which is a slow very memory
+ # consuming and fragmenting process. To avoid this, we pick a random,
+ # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+ # time. Moving up from 0x10000000 also allows more sbrk(2) space.
+ archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ archive_expsym_cmds='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ ;;
+
+ gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+ tmp_diet=no
+ if test "$host_os" = linux-dietlibc; then
+ case $cc_basename in
+ diet\ *) tmp_diet=yes;; # linux-dietlibc with static linking (!diet-dyn)
+ esac
+ fi
+ if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
+ && test "$tmp_diet" = no
+ then
+ tmp_addflag=
+ tmp_sharedflag='-shared'
+ case $cc_basename,$host_cpu in
+ pgcc*) # Portland Group C compiler
+ whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ tmp_addflag=' $pic_flag'
+ ;;
+ pgf77* | pgf90* | pgf95*) # Portland Group f77 and f90 compilers
+ whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ tmp_addflag=' $pic_flag -Mnomain' ;;
+ ecc*,ia64* | icc*,ia64*) # Intel C compiler on ia64
+ tmp_addflag=' -i_dynamic' ;;
+ efc*,ia64* | ifort*,ia64*) # Intel Fortran compiler on ia64
+ tmp_addflag=' -i_dynamic -nofor_main' ;;
+ ifc* | ifort*) # Intel Fortran compiler
+ tmp_addflag=' -nofor_main' ;;
+ lf95*) # Lahey Fortran 8.1
+ whole_archive_flag_spec=
+ tmp_sharedflag='--shared' ;;
+ xl[cC]*) # IBM XL C 8.0 on PPC (deal with xlf below)
+ tmp_sharedflag='-qmkshrobj'
+ tmp_addflag= ;;
+ esac
+ case `$CC -V 2>&1 | sed 5q` in
+ *Sun\ C*) # Sun C 5.9
+ whole_archive_flag_spec='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; $ECHO \"$new_convenience\"` ${wl}--no-whole-archive'
+ compiler_needs_object=yes
+ tmp_sharedflag='-G' ;;
+ *Sun\ F*) # Sun Fortran 8.3
+ tmp_sharedflag='-G' ;;
+ esac
+ archive_cmds='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+
+ if test "x$supports_anon_versioning" = xyes; then
+ archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+ fi
+
+ case $cc_basename in
+ xlf*)
+ # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
+ whole_archive_flag_spec='--whole-archive$convenience --no-whole-archive'
+ hardcode_libdir_flag_spec=
+ hardcode_libdir_flag_spec_ld='-rpath $libdir'
+ archive_cmds='$LD -shared $libobjs $deplibs $compiler_flags -soname $soname -o $lib'
+ if test "x$supports_anon_versioning" = xyes; then
+ archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
+ cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+ echo "local: *; };" >> $output_objdir/$libname.ver~
+ $LD -shared $libobjs $deplibs $compiler_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
+ fi
+ ;;
+ esac
+ else
+ ld_shlibs=no
+ fi
+ ;;
+
+ netbsd* | netbsdelf*-gnu)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
+ wlarc=
+ else
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ fi
+ ;;
+
+ solaris*)
+ if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
+ ld_shlibs=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: The releases 2.8.* of the GNU linker cannot reliably
+*** create shared libraries on Solaris systems. Therefore, libtool
+*** is disabling shared libraries support. We urge you to upgrade GNU
+*** binutils to release 2.9.1 or newer. Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+ elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ ld_shlibs=no
+ fi
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+ case `$LD -v 2>&1` in
+ *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*)
+ ld_shlibs=no
+ cat <<_LT_EOF 1>&2
+
+*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
+*** reliably create shared libraries on SCO systems. Therefore, libtool
+*** is disabling shared libraries support. We urge you to upgrade GNU
+*** binutils to release 2.16.91.0.3 or newer. Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+ ;;
+ *)
+ # For security reasons, it is highly recommended that you always
+ # use absolute paths for naming shared libraries, and exclude the
+ # DT_RUNPATH tag from executables and libraries. But doing so
+ # requires that you compile everything twice, which is a pain.
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ ld_shlibs=no
+ fi
+ ;;
+ esac
+ ;;
+
+ sunos4*)
+ archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ wlarc=
+ hardcode_direct=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ *)
+ if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+ else
+ ld_shlibs=no
+ fi
+ ;;
+ esac
+
+ if test "$ld_shlibs" = no; then
+ runpath_var=
+ hardcode_libdir_flag_spec=
+ export_dynamic_flag_spec=
+ whole_archive_flag_spec=
+ fi
+ else
+ # PORTME fill in a description of your system's linker (not GNU ld)
+ case $host_os in
+ aix3*)
+ allow_undefined_flag=unsupported
+ always_export_symbols=yes
+ archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
+ # Note: this linker hardcodes the directories in LIBPATH if there
+ # are no directories specified by -L.
+ hardcode_minus_L=yes
+ if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
+ # Neither direct hardcoding nor static linking is supported with a
+ # broken collect2.
+ hardcode_direct=unsupported
+ fi
+ ;;
+
+ aix[4-9]*)
+ if test "$host_cpu" = ia64; then
+ # On IA64, the linker does run time linking by default, so we don't
+ # have to do anything special.
+ aix_use_runtimelinking=no
+ exp_sym_flag='-Bexport'
+ no_entry_flag=""
+ else
+ # If we're using GNU nm, then we don't want the "-C" option.
+ # -C means demangle to AIX nm, but means don't demangle with GNU nm
+ if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+ export_symbols_cmds='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ else
+ export_symbols_cmds='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+ fi
+ aix_use_runtimelinking=no
+
+ # Test if we are trying to use run time linking or normal
+ # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+ # need to do runtime linking.
+ case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*)
+ for ld_flag in $LDFLAGS; do
+ if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+ aix_use_runtimelinking=yes
+ break
+ fi
+ done
+ ;;
+ esac
+
+ exp_sym_flag='-bexport'
+ no_entry_flag='-bnoentry'
+ fi
+
+ # When large executables or shared objects are built, AIX ld can
+ # have problems creating the table of contents. If linking a library
+ # or program results in "error TOC overflow" add -mminimal-toc to
+ # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not
+ # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+ archive_cmds=''
+ hardcode_direct=yes
+ hardcode_direct_absolute=yes
+ hardcode_libdir_separator=':'
+ link_all_deplibs=yes
+ file_list_spec='${wl}-f,'
+
+ if test "$GCC" = yes; then
+ case $host_os in aix4.[012]|aix4.[012].*)
+ # We only want to do this on AIX 4.2 and lower, the check
+ # below for broken collect2 doesn't work under 4.3+
+ collect2name=`${CC} -print-prog-name=collect2`
+ if test -f "$collect2name" &&
+ strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+ then
+ # We have reworked collect2
+ :
+ else
+ # We have old collect2
+ hardcode_direct=unsupported
+ # It fails to find uninstalled libraries when the uninstalled
+ # path is not listed in the libpath. Setting hardcode_minus_L
+ # to unsupported forces relinking
+ hardcode_minus_L=yes
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_libdir_separator=
+ fi
+ ;;
+ esac
+ shared_flag='-shared'
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag="$shared_flag "'${wl}-G'
+ fi
+ link_all_deplibs=no
+ else
+ # not using gcc
+ if test "$host_cpu" = ia64; then
+ # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+ # chokes on -Wl,-G. The following line is correct:
+ shared_flag='-G'
+ else
+ if test "$aix_use_runtimelinking" = yes; then
+ shared_flag='${wl}-G'
+ else
+ shared_flag='${wl}-bM:SRE'
+ fi
+ fi
+ fi
+
+ export_dynamic_flag_spec='${wl}-bexpall'
+ # It seems that -bexpall does not export symbols beginning with
+ # underscore (_), so it is better to generate a list of symbols to export.
+ always_export_symbols=yes
+ if test "$aix_use_runtimelinking" = yes; then
+ # Warning - without using the other runtime loading flags (-brtl),
+ # -berok will link without error, but may produce a broken library.
+ allow_undefined_flag='-berok'
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+lt_aix_libpath_sed='
+ /Import File Strings/,/^$/ {
+ /^0/ {
+ s/^0 *\(.*\)$/\1/
+ p
+ }
+ }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+ aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+
+ hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+ archive_expsym_cmds='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then $ECHO "X${wl}${allow_undefined_flag}" | $Xsed; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+ else
+ if test "$host_cpu" = ia64; then
+ hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
+ allow_undefined_flag="-z nodefs"
+ archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+ else
+ # Determine the default libpath from the value encoded in an
+ # empty executable.
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+lt_aix_libpath_sed='
+ /Import File Strings/,/^$/ {
+ /^0/ {
+ s/^0 *\(.*\)$/\1/
+ p
+ }
+ }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+ aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+
+ hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+ # Warning - without using the other run time loading flags,
+ # -berok will link without error, but may produce a broken library.
+ no_undefined_flag=' ${wl}-bernotok'
+ allow_undefined_flag=' ${wl}-berok'
+ # Exported symbols can be pulled into shared objects from archives
+ whole_archive_flag_spec='$convenience'
+ archive_cmds_need_lc=yes
+ # This is similar to how AIX traditionally builds its shared libraries.
+ archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+ fi
+ fi
+ ;;
+
+ amigaos*)
+ case $host_cpu in
+ powerpc)
+ # see comment about AmigaOS4 .so support
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+ archive_expsym_cmds=''
+ ;;
+ m68k)
+ archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_minus_L=yes
+ ;;
+ esac
+ ;;
+
+ bsdi[45]*)
+ export_dynamic_flag_spec=-rdynamic
+ ;;
+
+ cygwin* | mingw* | pw32* | cegcc*)
+ # When not using gcc, we currently assume that we are using
+ # Microsoft Visual C++.
+ # hardcode_libdir_flag_spec is actually meaningless, as there is
+ # no search path for DLLs.
+ hardcode_libdir_flag_spec=' '
+ allow_undefined_flag=unsupported
+ # Tell ltmain to make .lib files, not .a files.
+ libext=lib
+ # Tell ltmain to make .dll files, not .so files.
+ shrext_cmds=".dll"
+ # FIXME: Setting linknames here is a bad hack.
+ archive_cmds='$CC -o $lib $libobjs $compiler_flags `$ECHO "X$deplibs" | $Xsed -e '\''s/ -lc$//'\''` -link -dll~linknames='
+ # The linker will automatically build a .lib file if we build a DLL.
+ old_archive_from_new_cmds='true'
+ # FIXME: Should let the user specify the lib program.
+ old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs'
+ fix_srcfile_path='`cygpath -w "$srcfile"`'
+ enable_shared_with_static_runtimes=yes
+ ;;
+
+ darwin* | rhapsody*)
+
+
+ archive_cmds_need_lc=no
+ hardcode_direct=no
+ hardcode_automatic=yes
+ hardcode_shlibpath_var=unsupported
+ whole_archive_flag_spec=''
+ link_all_deplibs=yes
+ allow_undefined_flag="$_lt_dar_allow_undefined"
+ case $cc_basename in
+ ifort*) _lt_dar_can_shared=yes ;;
+ *) _lt_dar_can_shared=$GCC ;;
+ esac
+ if test "$_lt_dar_can_shared" = "yes"; then
+ output_verbose_link_cmd=echo
+ archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+ module_cmds="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+ archive_expsym_cmds="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+ module_expsym_cmds="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+
+ else
+ ld_shlibs=no
+ fi
+
+ ;;
+
+ dgux*)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_shlibpath_var=no
+ ;;
+
+ freebsd1*)
+ ld_shlibs=no
+ ;;
+
+ # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
+ # support. Future versions do this automatically, but an explicit c++rt0.o
+ # does not break anything, and helps significantly (at the cost of a little
+ # extra space).
+ freebsd2.2*)
+ archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
+ hardcode_libdir_flag_spec='-R$libdir'
+ hardcode_direct=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ # Unfortunately, older versions of FreeBSD 2 do not have this feature.
+ freebsd2*)
+ archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_direct=yes
+ hardcode_minus_L=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
+ freebsd* | dragonfly*)
+ archive_cmds='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
+ hardcode_libdir_flag_spec='-R$libdir'
+ hardcode_direct=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ hpux9*)
+ if test "$GCC" = yes; then
+ archive_cmds='$RM $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ else
+ archive_cmds='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+ fi
+ hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+ hardcode_libdir_separator=:
+ hardcode_direct=yes
+
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ hardcode_minus_L=yes
+ export_dynamic_flag_spec='${wl}-E'
+ ;;
+
+ hpux10*)
+ if test "$GCC" = yes -a "$with_gnu_ld" = no; then
+ archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+ fi
+ if test "$with_gnu_ld" = no; then
+ hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+ hardcode_libdir_flag_spec_ld='+b $libdir'
+ hardcode_libdir_separator=:
+ hardcode_direct=yes
+ hardcode_direct_absolute=yes
+ export_dynamic_flag_spec='${wl}-E'
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ hardcode_minus_L=yes
+ fi
+ ;;
+
+ hpux11*)
+ if test "$GCC" = yes -a "$with_gnu_ld" = no; then
+ case $host_cpu in
+ hppa*64*)
+ archive_cmds='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ ia64*)
+ archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ else
+ case $host_cpu in
+ hppa*64*)
+ archive_cmds='$CC -b ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ ia64*)
+ archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ *)
+ archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+ ;;
+ esac
+ fi
+ if test "$with_gnu_ld" = no; then
+ hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+ hardcode_libdir_separator=:
+
+ case $host_cpu in
+ hppa*64*|ia64*)
+ hardcode_direct=no
+ hardcode_shlibpath_var=no
+ ;;
+ *)
+ hardcode_direct=yes
+ hardcode_direct_absolute=yes
+ export_dynamic_flag_spec='${wl}-E'
+
+ # hardcode_minus_L: Not really in the search PATH,
+ # but as the default location of the library.
+ hardcode_minus_L=yes
+ ;;
+ esac
+ fi
+ ;;
+
+ irix5* | irix6* | nonstopux*)
+ if test "$GCC" = yes; then
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ # Try to use the -exported_symbol ld option, if it does not
+ # work, assume that -exports_file does not work either and
+ # implicitly export all symbols.
+ save_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int foo(void) {}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ LDFLAGS="$save_LDFLAGS"
+ else
+ archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
+ fi
+ archive_cmds_need_lc='no'
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ hardcode_libdir_separator=:
+ inherit_rpath=yes
+ link_all_deplibs=yes
+ ;;
+
+ netbsd* | netbsdelf*-gnu)
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' # a.out
+ else
+ archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags' # ELF
+ fi
+ hardcode_libdir_flag_spec='-R$libdir'
+ hardcode_direct=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ newsos6)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_direct=yes
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ hardcode_libdir_separator=:
+ hardcode_shlibpath_var=no
+ ;;
+
+ *nto* | *qnx*)
+ ;;
+
+ openbsd*)
+ if test -f /usr/libexec/ld.so; then
+ hardcode_direct=yes
+ hardcode_shlibpath_var=no
+ hardcode_direct_absolute=yes
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
+ hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+ export_dynamic_flag_spec='${wl}-E'
+ else
+ case $host_os in
+ openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
+ archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_libdir_flag_spec='-R$libdir'
+ ;;
+ *)
+ archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+ hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+ ;;
+ esac
+ fi
+ else
+ ld_shlibs=no
+ fi
+ ;;
+
+ os2*)
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_minus_L=yes
+ allow_undefined_flag=unsupported
+ archive_cmds='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~$ECHO DATA >> $output_objdir/$libname.def~$ECHO " SINGLE NONSHARED" >> $output_objdir/$libname.def~$ECHO EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
+ old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
+ ;;
+
+ osf3*)
+ if test "$GCC" = yes; then
+ allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
+ archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ else
+ allow_undefined_flag=' -expect_unresolved \*'
+ archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ fi
+ archive_cmds_need_lc='no'
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ hardcode_libdir_separator=:
+ ;;
+
+ osf4* | osf5*) # as osf3* with the addition of -msym flag
+ if test "$GCC" = yes; then
+ allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
+ archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && $ECHO "X${wl}-set_version ${wl}$verstring" | $Xsed` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+ hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+ else
+ allow_undefined_flag=' -expect_unresolved \*'
+ archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib'
+ archive_expsym_cmds='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
+ $CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "X-set_version $verstring" | $Xsed` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
+
+ # Both c and cxx compiler support -rpath directly
+ hardcode_libdir_flag_spec='-rpath $libdir'
+ fi
+ archive_cmds_need_lc='no'
+ hardcode_libdir_separator=:
+ ;;
+
+ solaris*)
+ no_undefined_flag=' -z defs'
+ if test "$GCC" = yes; then
+ wlarc='${wl}'
+ archive_cmds='$CC -shared ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -shared ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ else
+ case `$CC -V 2>&1` in
+ *"Compilers 5.0"*)
+ wlarc=''
+ archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
+ ;;
+ *)
+ wlarc='${wl}'
+ archive_cmds='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+ $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ ;;
+ esac
+ fi
+ hardcode_libdir_flag_spec='-R$libdir'
+ hardcode_shlibpath_var=no
+ case $host_os in
+ solaris2.[0-5] | solaris2.[0-5].*) ;;
+ *)
+ # The compiler driver will combine and reorder linker options,
+ # but understands `-z linker_flag'. GCC discards it without `$wl',
+ # but is careful enough not to reorder.
+ # Supported since Solaris 2.6 (maybe 2.5.1?)
+ if test "$GCC" = yes; then
+ whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+ else
+ whole_archive_flag_spec='-z allextract$convenience -z defaultextract'
+ fi
+ ;;
+ esac
+ link_all_deplibs=yes
+ ;;
+
+ sunos4*)
+ if test "x$host_vendor" = xsequent; then
+ # Use $CC to link under sequent, because it throws in some extra .o
+ # files that make .init and .fini sections work.
+ archive_cmds='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
+ fi
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_direct=yes
+ hardcode_minus_L=yes
+ hardcode_shlibpath_var=no
+ ;;
+
+ sysv4)
+ case $host_vendor in
+ sni)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_direct=yes # is this really true???
+ ;;
+ siemens)
+ ## LD is ld it makes a PLAMLIB
+ ## CC just makes a GrossModule.
+ archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
+ reload_cmds='$CC -r -o $output$reload_objs'
+ hardcode_direct=no
+ ;;
+ motorola)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_direct=no #Motorola manual says yes, but my tests say they lie
+ ;;
+ esac
+ runpath_var='LD_RUN_PATH'
+ hardcode_shlibpath_var=no
+ ;;
+
+ sysv4.3*)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_shlibpath_var=no
+ export_dynamic_flag_spec='-Bexport'
+ ;;
+
+ sysv4*MP*)
+ if test -d /usr/nec; then
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_shlibpath_var=no
+ runpath_var=LD_RUN_PATH
+ hardcode_runpath_var=yes
+ ld_shlibs=yes
+ fi
+ ;;
+
+ sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*)
+ no_undefined_flag='${wl}-z,text'
+ archive_cmds_need_lc=no
+ hardcode_shlibpath_var=no
+ runpath_var='LD_RUN_PATH'
+
+ if test "$GCC" = yes; then
+ archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ fi
+ ;;
+
+ sysv5* | sco3.2v5* | sco5v6*)
+ # Note: We can NOT use -z defs as we might desire, because we do not
+ # link with -lc, and that would cause any symbols used from libc to
+ # always be unresolved, which means just about no library would
+ # ever link correctly. If we're not using GNU ld we use -z text
+ # though, which does catch some bad symbols but isn't as heavy-handed
+ # as -z defs.
+ no_undefined_flag='${wl}-z,text'
+ allow_undefined_flag='${wl}-z,nodefs'
+ archive_cmds_need_lc=no
+ hardcode_shlibpath_var=no
+ hardcode_libdir_flag_spec='${wl}-R,$libdir'
+ hardcode_libdir_separator=':'
+ link_all_deplibs=yes
+ export_dynamic_flag_spec='${wl}-Bexport'
+ runpath_var='LD_RUN_PATH'
+
+ if test "$GCC" = yes; then
+ archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ else
+ archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+ fi
+ ;;
+
+ uts4*)
+ archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+ hardcode_libdir_flag_spec='-L$libdir'
+ hardcode_shlibpath_var=no
+ ;;
+
+ *)
+ ld_shlibs=no
+ ;;
+ esac
+
+ if test x$host_vendor = xsni; then
+ case $host in
+ sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+ export_dynamic_flag_spec='${wl}-Blargedynsym'
+ ;;
+ esac
+ fi
+ fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ld_shlibs" >&5
+$as_echo "$ld_shlibs" >&6; }
+test "$ld_shlibs" = no && can_build_shared=no
+
+with_gnu_ld=$with_gnu_ld
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+#
+# Do we need to explicitly link libc?
+#
+case "x$archive_cmds_need_lc" in
+x|xyes)
+ # Assume -lc should be added
+ archive_cmds_need_lc=yes
+
+ if test "$enable_shared" = yes && test "$GCC" = yes; then
+ case $archive_cmds in
+ *'~'*)
+ # FIXME: we may have to deal with multi-command sequences.
+ ;;
+ '$CC '*)
+ # Test whether the compiler implicitly links with -lc since on some
+ # systems, -lgcc has to come before -lc. If gcc already passes -lc
+ # to ld, don't add -lc before -lgcc.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -lc should be explicitly linked in" >&5
+$as_echo_n "checking whether -lc should be explicitly linked in... " >&6; }
+ $RM conftest*
+ echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } 2>conftest.err; then
+ soname=conftest
+ lib=conftest
+ libobjs=conftest.$ac_objext
+ deplibs=
+ wl=$lt_prog_compiler_wl
+ pic_flag=$lt_prog_compiler_pic
+ compiler_flags=-v
+ linker_flags=-v
+ verstring=
+ output_objdir=.
+ libname=conftest
+ lt_save_allow_undefined_flag=$allow_undefined_flag
+ allow_undefined_flag=
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1\""; } >&5
+ (eval $archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }
+ then
+ archive_cmds_need_lc=no
+ else
+ archive_cmds_need_lc=yes
+ fi
+ allow_undefined_flag=$lt_save_allow_undefined_flag
+ else
+ cat conftest.err 1>&5
+ fi
+ $RM conftest*
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $archive_cmds_need_lc" >&5
+$as_echo "$archive_cmds_need_lc" >&6; }
+ ;;
+ esac
+ fi
+ ;;
+esac
+
+
+
+
+
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+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking dynamic linker characteristics" >&5
+$as_echo_n "checking dynamic linker characteristics... " >&6; }
+
+if test "$GCC" = yes; then
+ case $host_os in
+ darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
+ *) lt_awk_arg="/^libraries:/" ;;
+ esac
+ lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e "s,=/,/,g"`
+ if $ECHO "$lt_search_path_spec" | $GREP ';' >/dev/null ; then
+ # if the path contains ";" then we assume it to be the separator
+ # otherwise default to the standard path separator (i.e. ":") - it is
+ # assumed that no part of a normal pathname contains ";" but that should
+ # okay in the real world where ";" in dirpaths is itself problematic.
+ lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ # Ok, now we have the path, separated by spaces, we can step through it
+ # and add multilib dir if necessary.
+ lt_tmp_lt_search_path_spec=
+ lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
+ for lt_sys_path in $lt_search_path_spec; do
+ if test -d "$lt_sys_path/$lt_multi_os_dir"; then
+ lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
+ else
+ test -d "$lt_sys_path" && \
+ lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
+ fi
+ done
+ lt_search_path_spec=`$ECHO $lt_tmp_lt_search_path_spec | awk '
+BEGIN {RS=" "; FS="/|\n";} {
+ lt_foo="";
+ lt_count=0;
+ for (lt_i = NF; lt_i > 0; lt_i--) {
+ if ($lt_i != "" && $lt_i != ".") {
+ if ($lt_i == "..") {
+ lt_count++;
+ } else {
+ if (lt_count == 0) {
+ lt_foo="/" $lt_i lt_foo;
+ } else {
+ lt_count--;
+ }
+ }
+ }
+ }
+ if (lt_foo != "") { lt_freq[lt_foo]++; }
+ if (lt_freq[lt_foo] == 1) { print lt_foo; }
+}'`
+ sys_lib_search_path_spec=`$ECHO $lt_search_path_spec`
+else
+ sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+fi
+library_names_spec=
+libname_spec='lib$name'
+soname_spec=
+shrext_cmds=".so"
+postinstall_cmds=
+postuninstall_cmds=
+finish_cmds=
+finish_eval=
+shlibpath_var=
+shlibpath_overrides_runpath=unknown
+version_type=none
+dynamic_linker="$host_os ld.so"
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+need_lib_prefix=unknown
+hardcode_into_libs=no
+
+# when you set need_version to no, make sure it does not cause -set_version
+# flags to be left without arguments
+need_version=unknown
+
+case $host_os in
+aix3*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
+ shlibpath_var=LIBPATH
+
+ # AIX 3 has no versioning support, so we append a major version to the name.
+ soname_spec='${libname}${release}${shared_ext}$major'
+ ;;
+
+aix[4-9]*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ hardcode_into_libs=yes
+ if test "$host_cpu" = ia64; then
+ # AIX 5 supports IA64
+ library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ else
+ # With GCC up to 2.95.x, collect2 would create an import file
+ # for dependence libraries. The import file would start with
+ # the line `#! .'. This would cause the generated library to
+ # depend on `.', always an invalid library. This was fixed in
+ # development snapshots of GCC prior to 3.0.
+ case $host_os in
+ aix4 | aix4.[01] | aix4.[01].*)
+ if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
+ echo ' yes '
+ echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
+ :
+ else
+ can_build_shared=no
+ fi
+ ;;
+ esac
+ # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
+ # soname into executable. Probably we can add versioning support to
+ # collect2, so additional links can be useful in future.
+ if test "$aix_use_runtimelinking" = yes; then
+ # If using run time linking (on AIX 4.2 or later) use lib<name>.so
+ # instead of lib<name>.a to let people know that these are not
+ # typical AIX shared libraries.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ else
+ # We preserve .a as extension for shared libraries through AIX4.2
+ # and later when we are not doing run time linking.
+ library_names_spec='${libname}${release}.a $libname.a'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ fi
+ shlibpath_var=LIBPATH
+ fi
+ ;;
+
+amigaos*)
+ case $host_cpu in
+ powerpc)
+ # Since July 2007 AmigaOS4 officially supports .so libraries.
+ # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ ;;
+ m68k)
+ library_names_spec='$libname.ixlibrary $libname.a'
+ # Create ${libname}_ixlibrary.a entries in /sys/libs.
+ finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`$ECHO "X$lib" | $Xsed -e '\''s%^.*/\([^/]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
+ ;;
+ esac
+ ;;
+
+beos*)
+ library_names_spec='${libname}${shared_ext}'
+ dynamic_linker="$host_os ld.so"
+ shlibpath_var=LIBRARY_PATH
+ ;;
+
+bsdi[45]*)
+ version_type=linux
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+ sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+ # the default ld.so.conf also contains /usr/contrib/lib and
+ # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
+ # libtool to hard-code these into programs
+ ;;
+
+cygwin* | mingw* | pw32* | cegcc*)
+ version_type=windows
+ shrext_cmds=".dll"
+ need_version=no
+ need_lib_prefix=no
+
+ case $GCC,$host_os in
+ yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
+ library_names_spec='$libname.dll.a'
+ # DLL is installed to $(libdir)/../bin by postinstall_cmds
+ postinstall_cmds='base_file=`basename \${file}`~
+ dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+ dldir=$destdir/`dirname \$dlpath`~
+ test -d \$dldir || mkdir -p \$dldir~
+ $install_prog $dir/$dlname \$dldir/$dlname~
+ chmod a+x \$dldir/$dlname~
+ if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
+ eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
+ fi'
+ postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+ dlpath=$dir/\$dldll~
+ $RM \$dlpath'
+ shlibpath_overrides_runpath=yes
+
+ case $host_os in
+ cygwin*)
+ # Cygwin DLLs use 'cyg' prefix rather than 'lib'
+ soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+ sys_lib_search_path_spec="/usr/lib /lib/w32api /lib /usr/local/lib"
+ ;;
+ mingw* | cegcc*)
+ # MinGW DLLs use traditional 'lib' prefix
+ soname_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+ sys_lib_search_path_spec=`$CC -print-search-dirs | $GREP "^libraries:" | $SED -e "s/^libraries://" -e "s,=/,/,g"`
+ if $ECHO "$sys_lib_search_path_spec" | $GREP ';[c-zC-Z]:/' >/dev/null; then
+ # It is most probably a Windows format PATH printed by
+ # mingw gcc, but we are running on Cygwin. Gcc prints its search
+ # path with ; separators, and with drive letters. We can handle the
+ # drive letters (cygwin fileutils understands them), so leave them,
+ # especially as we might pass files found there to a mingw objdump,
+ # which wouldn't understand a cygwinified path. Ahh.
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'`
+ else
+ sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+ fi
+ ;;
+ pw32*)
+ # pw32 DLLs use 'pw' prefix rather than 'lib'
+ library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+ ;;
+ esac
+ ;;
+
+ *)
+ library_names_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext} $libname.lib'
+ ;;
+ esac
+ dynamic_linker='Win32 ld.exe'
+ # FIXME: first we should search . and the directory the executable is in
+ shlibpath_var=PATH
+ ;;
+
+darwin* | rhapsody*)
+ dynamic_linker="$host_os dyld"
+ version_type=darwin
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
+ soname_spec='${libname}${release}${major}$shared_ext'
+ shlibpath_overrides_runpath=yes
+ shlibpath_var=DYLD_LIBRARY_PATH
+ shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
+
+ sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"
+ sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
+ ;;
+
+dgux*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ ;;
+
+freebsd1*)
+ dynamic_linker=no
+ ;;
+
+freebsd* | dragonfly*)
+ # DragonFly does not have aout. When/if they implement a new
+ # versioning mechanism, adjust this.
+ if test -x /usr/bin/objformat; then
+ objformat=`/usr/bin/objformat`
+ else
+ case $host_os in
+ freebsd[123]*) objformat=aout ;;
+ *) objformat=elf ;;
+ esac
+ fi
+ version_type=freebsd-$objformat
+ case $version_type in
+ freebsd-elf*)
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+ need_version=no
+ need_lib_prefix=no
+ ;;
+ freebsd-*)
+ library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
+ need_version=yes
+ ;;
+ esac
+ shlibpath_var=LD_LIBRARY_PATH
+ case $host_os in
+ freebsd2*)
+ shlibpath_overrides_runpath=yes
+ ;;
+ freebsd3.[01]* | freebsdelf3.[01]*)
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+ freebsd3.[2-9]* | freebsdelf3.[2-9]* | \
+ freebsd4.[0-5] | freebsdelf4.[0-5] | freebsd4.1.1 | freebsdelf4.1.1)
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+ *) # from 4.6 on, and DragonFly
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+ esac
+ ;;
+
+gnu*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ hardcode_into_libs=yes
+ ;;
+
+hpux9* | hpux10* | hpux11*)
+ # Give a soname corresponding to the major version so that dld.sl refuses to
+ # link against other versions.
+ version_type=sunos
+ need_lib_prefix=no
+ need_version=no
+ case $host_cpu in
+ ia64*)
+ shrext_cmds='.so'
+ hardcode_into_libs=yes
+ dynamic_linker="$host_os dld.so"
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ if test "X$HPUX_IA64_MODE" = X32; then
+ sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
+ else
+ sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
+ fi
+ sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+ ;;
+ hppa*64*)
+ shrext_cmds='.sl'
+ hardcode_into_libs=yes
+ dynamic_linker="$host_os dld.sl"
+ shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
+ shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
+ sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+ ;;
+ *)
+ shrext_cmds='.sl'
+ dynamic_linker="$host_os dld.sl"
+ shlibpath_var=SHLIB_PATH
+ shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ ;;
+ esac
+ # HP-UX runs *really* slowly unless shared libraries are mode 555.
+ postinstall_cmds='chmod 555 $lib'
+ ;;
+
+interix[3-9]*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+
+irix5* | irix6* | nonstopux*)
+ case $host_os in
+ nonstopux*) version_type=nonstopux ;;
+ *)
+ if test "$lt_cv_prog_gnu_ld" = yes; then
+ version_type=linux
+ else
+ version_type=irix
+ fi ;;
+ esac
+ need_lib_prefix=no
+ need_version=no
+ soname_spec='${libname}${release}${shared_ext}$major'
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
+ case $host_os in
+ irix5* | nonstopux*)
+ libsuff= shlibsuff=
+ ;;
+ *)
+ case $LD in # libtool.m4 will add one of these switches to LD
+ *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
+ libsuff= shlibsuff= libmagic=32-bit;;
+ *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
+ libsuff=32 shlibsuff=N32 libmagic=N32;;
+ *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
+ libsuff=64 shlibsuff=64 libmagic=64-bit;;
+ *) libsuff= shlibsuff= libmagic=never-match;;
+ esac
+ ;;
+ esac
+ shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
+ shlibpath_overrides_runpath=no
+ sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+ sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+ hardcode_into_libs=yes
+ ;;
+
+# No shared lib support for Linux oldld, aout, or coff.
+linux*oldld* | linux*aout* | linux*coff*)
+ dynamic_linker=no
+ ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ # Some binutils ld are patched to set DT_RUNPATH
+ save_LDFLAGS=$LDFLAGS
+ save_libdir=$libdir
+ eval "libdir=/foo; wl=\"$lt_prog_compiler_wl\"; \
+ LDFLAGS=\"\$LDFLAGS $hardcode_libdir_flag_spec\""
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ if ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null; then :
+ shlibpath_overrides_runpath=yes
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ LDFLAGS=$save_LDFLAGS
+ libdir=$save_libdir
+
+ # This implies no fast_install, which is unacceptable.
+ # Some rework will be needed to allow for fast_install
+ # before this can be enabled.
+ hardcode_into_libs=yes
+
+ # Append ld.so.conf contents to the search path
+ if test -f /etc/ld.so.conf; then
+ lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \$2)); skip = 1; } { if (!skip) print \$0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;/^$/d' | tr '\n' ' '`
+ sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+ fi
+
+ # We used to test for /lib/ld.so.1 and disable shared libraries on
+ # powerpc, because MkLinux only supported shared libraries with the
+ # GNU dynamic linker. Since this was broken with cross compilers,
+ # most powerpc-linux boxes support dynamic linking these days and
+ # people can always --disable-shared, the test was removed, and we
+ # assume the GNU/Linux dynamic linker is in use.
+ dynamic_linker='GNU/Linux ld.so'
+ ;;
+
+netbsdelf*-gnu)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ dynamic_linker='NetBSD ld.elf_so'
+ ;;
+
+netbsd*)
+ version_type=sunos
+ need_lib_prefix=no
+ need_version=no
+ if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+ dynamic_linker='NetBSD (a.out) ld.so'
+ else
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ dynamic_linker='NetBSD ld.elf_so'
+ fi
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ ;;
+
+newsos6)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ ;;
+
+*nto* | *qnx*)
+ version_type=qnx
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ dynamic_linker='ldqnx.so'
+ ;;
+
+openbsd*)
+ version_type=sunos
+ sys_lib_dlsearch_path_spec="/usr/lib"
+ need_lib_prefix=no
+ # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
+ case $host_os in
+ openbsd3.3 | openbsd3.3.*) need_version=yes ;;
+ *) need_version=no ;;
+ esac
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+ case $host_os in
+ openbsd2.[89] | openbsd2.[89].*)
+ shlibpath_overrides_runpath=no
+ ;;
+ *)
+ shlibpath_overrides_runpath=yes
+ ;;
+ esac
+ else
+ shlibpath_overrides_runpath=yes
+ fi
+ ;;
+
+os2*)
+ libname_spec='$name'
+ shrext_cmds=".dll"
+ need_lib_prefix=no
+ library_names_spec='$libname${shared_ext} $libname.a'
+ dynamic_linker='OS/2 ld.exe'
+ shlibpath_var=LIBPATH
+ ;;
+
+osf3* | osf4* | osf5*)
+ version_type=osf
+ need_lib_prefix=no
+ need_version=no
+ soname_spec='${libname}${release}${shared_ext}$major'
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+ sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+ ;;
+
+rdos*)
+ dynamic_linker=no
+ ;;
+
+solaris*)
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ # ldd complains unless libraries are executable
+ postinstall_cmds='chmod +x $lib'
+ ;;
+
+sunos4*)
+ version_type=sunos
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+ finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ if test "$with_gnu_ld" = yes; then
+ need_lib_prefix=no
+ fi
+ need_version=yes
+ ;;
+
+sysv4 | sysv4.3*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ case $host_vendor in
+ sni)
+ shlibpath_overrides_runpath=no
+ need_lib_prefix=no
+ runpath_var=LD_RUN_PATH
+ ;;
+ siemens)
+ need_lib_prefix=no
+ ;;
+ motorola)
+ need_lib_prefix=no
+ need_version=no
+ shlibpath_overrides_runpath=no
+ sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+ ;;
+ esac
+ ;;
+
+sysv4*MP*)
+ if test -d /usr/nec ;then
+ version_type=linux
+ library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
+ soname_spec='$libname${shared_ext}.$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ fi
+ ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+ version_type=freebsd-elf
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=yes
+ hardcode_into_libs=yes
+ if test "$with_gnu_ld" = yes; then
+ sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
+ else
+ sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
+ case $host_os in
+ sco3.2v5*)
+ sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
+ ;;
+ esac
+ fi
+ sys_lib_dlsearch_path_spec='/usr/lib'
+ ;;
+
+tpf*)
+ # TPF is a cross-target only. Preferred cross-host = GNU/Linux.
+ version_type=linux
+ need_lib_prefix=no
+ need_version=no
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ shlibpath_var=LD_LIBRARY_PATH
+ shlibpath_overrides_runpath=no
+ hardcode_into_libs=yes
+ ;;
+
+uts4*)
+ version_type=linux
+ library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+ soname_spec='${libname}${release}${shared_ext}$major'
+ shlibpath_var=LD_LIBRARY_PATH
+ ;;
+
+*)
+ dynamic_linker=no
+ ;;
+esac
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $dynamic_linker" >&5
+$as_echo "$dynamic_linker" >&6; }
+test "$dynamic_linker" = no && can_build_shared=no
+
+variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
+if test "$GCC" = yes; then
+ variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
+fi
+
+if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
+ sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
+fi
+if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
+ sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to hardcode library paths into programs" >&5
+$as_echo_n "checking how to hardcode library paths into programs... " >&6; }
+hardcode_action=
+if test -n "$hardcode_libdir_flag_spec" ||
+ test -n "$runpath_var" ||
+ test "X$hardcode_automatic" = "Xyes" ; then
+
+ # We can hardcode non-existent directories.
+ if test "$hardcode_direct" != no &&
+ # If the only mechanism to avoid hardcoding is shlibpath_var, we
+ # have to relink, otherwise we might link with an installed library
+ # when we should be linking with a yet-to-be-installed one
+ ## test "$_LT_TAGVAR(hardcode_shlibpath_var, )" != no &&
+ test "$hardcode_minus_L" != no; then
+ # Linking always hardcodes the temporary library directory.
+ hardcode_action=relink
+ else
+ # We can link without hardcoding, and we can hardcode nonexisting dirs.
+ hardcode_action=immediate
+ fi
+else
+ # We cannot hardcode anything, or else we can only hardcode existing
+ # directories.
+ hardcode_action=unsupported
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $hardcode_action" >&5
+$as_echo "$hardcode_action" >&6; }
+
+if test "$hardcode_action" = relink ||
+ test "$inherit_rpath" = yes; then
+ # Fast installation is not supported
+ enable_fast_install=no
+elif test "$shlibpath_overrides_runpath" = yes ||
+ test "$enable_shared" = no; then
+ # Fast installation is not necessary
+ enable_fast_install=needless
+fi
+
+
+
+
+
+
+ if test "x$enable_dlopen" != xyes; then
+ enable_dlopen=unknown
+ enable_dlopen_self=unknown
+ enable_dlopen_self_static=unknown
+else
+ lt_cv_dlopen=no
+ lt_cv_dlopen_libs=
+
+ case $host_os in
+ beos*)
+ lt_cv_dlopen="load_add_on"
+ lt_cv_dlopen_libs=
+ lt_cv_dlopen_self=yes
+ ;;
+
+ mingw* | pw32* | cegcc*)
+ lt_cv_dlopen="LoadLibrary"
+ lt_cv_dlopen_libs=
+ ;;
+
+ cygwin*)
+ lt_cv_dlopen="dlopen"
+ lt_cv_dlopen_libs=
+ ;;
+
+ darwin*)
+ # if libdl is installed we need to link against it
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+$as_echo_n "checking for dlopen in -ldl... " >&6; }
+if test "${ac_cv_lib_dl_dlopen+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_dl_dlopen=yes
+else
+ ac_cv_lib_dl_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
+$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
+if test "x$ac_cv_lib_dl_dlopen" = x""yes; then :
+ lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
+else
+
+ lt_cv_dlopen="dyld"
+ lt_cv_dlopen_libs=
+ lt_cv_dlopen_self=yes
+
+fi
+
+ ;;
+
+ *)
+ ac_fn_c_check_func "$LINENO" "shl_load" "ac_cv_func_shl_load"
+if test "x$ac_cv_func_shl_load" = x""yes; then :
+ lt_cv_dlopen="shl_load"
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5
+$as_echo_n "checking for shl_load in -ldld... " >&6; }
+if test "${ac_cv_lib_dld_shl_load+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char shl_load ();
+int
+main ()
+{
+return shl_load ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_dld_shl_load=yes
+else
+ ac_cv_lib_dld_shl_load=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5
+$as_echo "$ac_cv_lib_dld_shl_load" >&6; }
+if test "x$ac_cv_lib_dld_shl_load" = x""yes; then :
+ lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"
+else
+ ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen"
+if test "x$ac_cv_func_dlopen" = x""yes; then :
+ lt_cv_dlopen="dlopen"
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+$as_echo_n "checking for dlopen in -ldl... " >&6; }
+if test "${ac_cv_lib_dl_dlopen+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_dl_dlopen=yes
+else
+ ac_cv_lib_dl_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
+$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
+if test "x$ac_cv_lib_dl_dlopen" = x""yes; then :
+ lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -lsvld" >&5
+$as_echo_n "checking for dlopen in -lsvld... " >&6; }
+if test "${ac_cv_lib_svld_dlopen+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lsvld $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_svld_dlopen=yes
+else
+ ac_cv_lib_svld_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_svld_dlopen" >&5
+$as_echo "$ac_cv_lib_svld_dlopen" >&6; }
+if test "x$ac_cv_lib_svld_dlopen" = x""yes; then :
+ lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dld_link in -ldld" >&5
+$as_echo_n "checking for dld_link in -ldld... " >&6; }
+if test "${ac_cv_lib_dld_dld_link+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dld_link ();
+int
+main ()
+{
+return dld_link ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_dld_dld_link=yes
+else
+ ac_cv_lib_dld_dld_link=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_dld_link" >&5
+$as_echo "$ac_cv_lib_dld_dld_link" >&6; }
+if test "x$ac_cv_lib_dld_dld_link" = x""yes; then :
+ lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+ ;;
+ esac
+
+ if test "x$lt_cv_dlopen" != xno; then
+ enable_dlopen=yes
+ else
+ enable_dlopen=no
+ fi
+
+ case $lt_cv_dlopen in
+ dlopen)
+ save_CPPFLAGS="$CPPFLAGS"
+ test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+ save_LDFLAGS="$LDFLAGS"
+ wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+ save_LIBS="$LIBS"
+ LIBS="$lt_cv_dlopen_libs $LIBS"
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a program can dlopen itself" >&5
+$as_echo_n "checking whether a program can dlopen itself... " >&6; }
+if test "${lt_cv_dlopen_self+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test "$cross_compiling" = yes; then :
+ lt_cv_dlopen_self=cross
+else
+ lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+ lt_status=$lt_dlunknown
+ cat > conftest.$ac_ext <<_LT_EOF
+#line 10114 "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+# define LT_DLGLOBAL RTLD_GLOBAL
+#else
+# ifdef DL_GLOBAL
+# define LT_DLGLOBAL DL_GLOBAL
+# else
+# define LT_DLGLOBAL 0
+# endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+ find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+# ifdef RTLD_LAZY
+# define LT_DLLAZY_OR_NOW RTLD_LAZY
+# else
+# ifdef DL_LAZY
+# define LT_DLLAZY_OR_NOW DL_LAZY
+# else
+# ifdef RTLD_NOW
+# define LT_DLLAZY_OR_NOW RTLD_NOW
+# else
+# ifdef DL_NOW
+# define LT_DLLAZY_OR_NOW DL_NOW
+# else
+# define LT_DLLAZY_OR_NOW 0
+# endif
+# endif
+# endif
+# endif
+#endif
+
+void fnord() { int i=42;}
+int main ()
+{
+ void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+ int status = $lt_dlunknown;
+
+ if (self)
+ {
+ if (dlsym (self,"fnord")) status = $lt_dlno_uscore;
+ else if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore;
+ /* dlclose (self); */
+ }
+ else
+ puts (dlerror ());
+
+ return status;
+}
+_LT_EOF
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
+ (./conftest; exit; ) >&5 2>/dev/null
+ lt_status=$?
+ case x$lt_status in
+ x$lt_dlno_uscore) lt_cv_dlopen_self=yes ;;
+ x$lt_dlneed_uscore) lt_cv_dlopen_self=yes ;;
+ x$lt_dlunknown|x*) lt_cv_dlopen_self=no ;;
+ esac
+ else :
+ # compilation failed
+ lt_cv_dlopen_self=no
+ fi
+fi
+rm -fr conftest*
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self" >&5
+$as_echo "$lt_cv_dlopen_self" >&6; }
+
+ if test "x$lt_cv_dlopen_self" = xyes; then
+ wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a statically linked program can dlopen itself" >&5
+$as_echo_n "checking whether a statically linked program can dlopen itself... " >&6; }
+if test "${lt_cv_dlopen_self_static+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test "$cross_compiling" = yes; then :
+ lt_cv_dlopen_self_static=cross
+else
+ lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+ lt_status=$lt_dlunknown
+ cat > conftest.$ac_ext <<_LT_EOF
+#line 10210 "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+# define LT_DLGLOBAL RTLD_GLOBAL
+#else
+# ifdef DL_GLOBAL
+# define LT_DLGLOBAL DL_GLOBAL
+# else
+# define LT_DLGLOBAL 0
+# endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+ find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+# ifdef RTLD_LAZY
+# define LT_DLLAZY_OR_NOW RTLD_LAZY
+# else
+# ifdef DL_LAZY
+# define LT_DLLAZY_OR_NOW DL_LAZY
+# else
+# ifdef RTLD_NOW
+# define LT_DLLAZY_OR_NOW RTLD_NOW
+# else
+# ifdef DL_NOW
+# define LT_DLLAZY_OR_NOW DL_NOW
+# else
+# define LT_DLLAZY_OR_NOW 0
+# endif
+# endif
+# endif
+# endif
+#endif
+
+void fnord() { int i=42;}
+int main ()
+{
+ void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+ int status = $lt_dlunknown;
+
+ if (self)
+ {
+ if (dlsym (self,"fnord")) status = $lt_dlno_uscore;
+ else if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore;
+ /* dlclose (self); */
+ }
+ else
+ puts (dlerror ());
+
+ return status;
+}
+_LT_EOF
+ if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
+ (./conftest; exit; ) >&5 2>/dev/null
+ lt_status=$?
+ case x$lt_status in
+ x$lt_dlno_uscore) lt_cv_dlopen_self_static=yes ;;
+ x$lt_dlneed_uscore) lt_cv_dlopen_self_static=yes ;;
+ x$lt_dlunknown|x*) lt_cv_dlopen_self_static=no ;;
+ esac
+ else :
+ # compilation failed
+ lt_cv_dlopen_self_static=no
+ fi
+fi
+rm -fr conftest*
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self_static" >&5
+$as_echo "$lt_cv_dlopen_self_static" >&6; }
+ fi
+
+ CPPFLAGS="$save_CPPFLAGS"
+ LDFLAGS="$save_LDFLAGS"
+ LIBS="$save_LIBS"
+ ;;
+ esac
+
+ case $lt_cv_dlopen_self in
+ yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+ *) enable_dlopen_self=unknown ;;
+ esac
+
+ case $lt_cv_dlopen_self_static in
+ yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+ *) enable_dlopen_self_static=unknown ;;
+ esac
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+striplib=
+old_striplib=
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether stripping libraries is possible" >&5
+$as_echo_n "checking whether stripping libraries is possible... " >&6; }
+if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+ test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
+ test -z "$striplib" && striplib="$STRIP --strip-unneeded"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+# FIXME - insert some real tests, host_os isn't really good enough
+ case $host_os in
+ darwin*)
+ if test -n "$STRIP" ; then
+ striplib="$STRIP -x"
+ old_striplib="$STRIP -S"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ fi
+ ;;
+ *)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ ;;
+ esac
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+ # Report which library types will actually be built
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if libtool supports shared libraries" >&5
+$as_echo_n "checking if libtool supports shared libraries... " >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $can_build_shared" >&5
+$as_echo "$can_build_shared" >&6; }
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build shared libraries" >&5
+$as_echo_n "checking whether to build shared libraries... " >&6; }
+ test "$can_build_shared" = "no" && enable_shared=no
+
+ # On AIX, shared libraries and static libraries use the same namespace, and
+ # are all built from PIC.
+ case $host_os in
+ aix3*)
+ test "$enable_shared" = yes && enable_static=no
+ if test -n "$RANLIB"; then
+ archive_cmds="$archive_cmds~\$RANLIB \$lib"
+ postinstall_cmds='$RANLIB $lib'
+ fi
+ ;;
+
+ aix[4-9]*)
+ if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+ test "$enable_shared" = yes && enable_static=no
+ fi
+ ;;
+ esac
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_shared" >&5
+$as_echo "$enable_shared" >&6; }
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build static libraries" >&5
+$as_echo_n "checking whether to build static libraries... " >&6; }
+ # Make sure either enable_shared or enable_static is yes.
+ test "$enable_shared" = yes || enable_static=yes
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_static" >&5
+$as_echo "$enable_static" >&6; }
+
+
+
+
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+CC="$lt_save_CC"
+
+
+
+
+
+
+
+
+
+
+
+
+
+ ac_config_commands="$ac_config_commands libtool"
+
+
+
+
+# Only expand once:
+
+
+
+if test "x$GCC" = xyes ; then
+ CFLAGS="-O3 $CFLAGS"
+fi
+
+
+for ac_header in sys/inotify.h sys/epoll.h sys/event.h port.h poll.h sys/select.h sys/eventfd.h sys/signalfd.h
+do :
+ as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+ cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_func in inotify_init epoll_ctl kqueue port_create poll select eventfd signalfd
+do :
+ as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
+if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
+ cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+for ac_func in clock_gettime
+do :
+ ac_fn_c_check_func "$LINENO" "clock_gettime" "ac_cv_func_clock_gettime"
+if test "x$ac_cv_func_clock_gettime" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_CLOCK_GETTIME 1
+_ACEOF
+
+else
+
+ if test $(uname) = Linux; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for clock_gettime syscall" >&5
+$as_echo_n "checking for clock_gettime syscall... " >&6; }
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <unistd.h>
+ #include <sys/syscall.h>
+ #include <time.h>
+int
+main ()
+{
+struct timespec ts; int status = syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts)
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_have_clock_syscall=1
+
+$as_echo "#define HAVE_CLOCK_SYSCALL 1" >>confdefs.h
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+ fi
+ if test -z "$LIBEV_M4_AVOID_LIBRT" && test -z "$ac_have_clock_syscall"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for clock_gettime in -lrt" >&5
+$as_echo_n "checking for clock_gettime in -lrt... " >&6; }
+if test "${ac_cv_lib_rt_clock_gettime+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lrt $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char clock_gettime ();
+int
+main ()
+{
+return clock_gettime ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_rt_clock_gettime=yes
+else
+ ac_cv_lib_rt_clock_gettime=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_gettime" >&5
+$as_echo "$ac_cv_lib_rt_clock_gettime" >&6; }
+if test "x$ac_cv_lib_rt_clock_gettime" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBRT 1
+_ACEOF
+
+ LIBS="-lrt $LIBS"
+
+fi
+
+ unset ac_cv_func_clock_gettime
+ for ac_func in clock_gettime
+do :
+ ac_fn_c_check_func "$LINENO" "clock_gettime" "ac_cv_func_clock_gettime"
+if test "x$ac_cv_func_clock_gettime" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_CLOCK_GETTIME 1
+_ACEOF
+
+fi
+done
+
+ fi
+
+fi
+done
+
+
+for ac_func in nanosleep
+do :
+ ac_fn_c_check_func "$LINENO" "nanosleep" "ac_cv_func_nanosleep"
+if test "x$ac_cv_func_nanosleep" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_NANOSLEEP 1
+_ACEOF
+
+else
+
+ if test -z "$LIBEV_M4_AVOID_LIBRT"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for nanosleep in -lrt" >&5
+$as_echo_n "checking for nanosleep in -lrt... " >&6; }
+if test "${ac_cv_lib_rt_nanosleep+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lrt $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char nanosleep ();
+int
+main ()
+{
+return nanosleep ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_rt_nanosleep=yes
+else
+ ac_cv_lib_rt_nanosleep=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_nanosleep" >&5
+$as_echo "$ac_cv_lib_rt_nanosleep" >&6; }
+if test "x$ac_cv_lib_rt_nanosleep" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBRT 1
+_ACEOF
+
+ LIBS="-lrt $LIBS"
+
+fi
+
+ unset ac_cv_func_nanosleep
+ for ac_func in nanosleep
+do :
+ ac_fn_c_check_func "$LINENO" "nanosleep" "ac_cv_func_nanosleep"
+if test "x$ac_cv_func_nanosleep" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_NANOSLEEP 1
+_ACEOF
+
+fi
+done
+
+ fi
+
+fi
+done
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ceil in -lm" >&5
+$as_echo_n "checking for ceil in -lm... " >&6; }
+if test "${ac_cv_lib_m_ceil+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char ceil ();
+int
+main ()
+{
+return ceil ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_m_ceil=yes
+else
+ ac_cv_lib_m_ceil=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_ceil" >&5
+$as_echo "$ac_cv_lib_m_ceil" >&6; }
+if test "x$ac_cv_lib_m_ceil" = x""yes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBM 1
+_ACEOF
+
+ LIBS="-lm $LIBS"
+
+fi
+
+
+
+
+ac_config_files="$ac_config_files Makefile"
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems. If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+ for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+ eval ac_val=\$$ac_var
+ case $ac_val in #(
+ *${as_nl}*)
+ case $ac_var in #(
+ *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+ esac
+ case $ac_var in #(
+ _ | IFS | as_nl) ;; #(
+ BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+ *) { eval $ac_var=; unset $ac_var;} ;;
+ esac ;;
+ esac
+ done
+
+ (set) 2>&1 |
+ case $as_nl`(ac_space=' '; set) 2>&1` in #(
+ *${as_nl}ac_space=\ *)
+ # `set' does not quote correctly, so add quotes: double-quote
+ # substitution turns \\\\ into \\, and sed turns \\ into \.
+ sed -n \
+ "s/'/'\\\\''/g;
+ s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+ ;; #(
+ *)
+ # `set' quotes correctly as required by POSIX, so do not add quotes.
+ sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+ ;;
+ esac |
+ sort
+) |
+ sed '
+ /^ac_cv_env_/b end
+ t clear
+ :clear
+ s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+ t end
+ s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+ :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+ if test -w "$cache_file"; then
+ test "x$cache_file" != "x/dev/null" &&
+ { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+$as_echo "$as_me: updating cache $cache_file" >&6;}
+ cat confcache >$cache_file
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
+ fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+U=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+ # 1. Remove the extension, and $U if already installed.
+ ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+ ac_i=`$as_echo "$ac_i" | sed "$ac_script"`
+ # 2. Prepend LIBOBJDIR. When used with automake>=1.10 LIBOBJDIR
+ # will be set to the directory where LIBOBJS objects are built.
+ as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+ as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+ if test -n "$EXEEXT"; then
+ am__EXEEXT_TRUE=
+ am__EXEEXT_FALSE='#'
+else
+ am__EXEEXT_TRUE='#'
+ am__EXEEXT_FALSE=
+fi
+
+if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then
+ as_fn_error $? "conditional \"MAINTAINER_MODE\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${AMDEP_TRUE}" && test -z "${AMDEP_FALSE}"; then
+ as_fn_error $? "conditional \"AMDEP\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${am__fastdepCC_TRUE}" && test -z "${am__fastdepCC_FALSE}"; then
+ as_fn_error $? "conditional \"am__fastdepCC\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+
+: ${CONFIG_STATUS=./config.status}
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+$as_echo "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+ emulate sh
+ NULLCMD=:
+ # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '${1+"$@"}'='"$@"'
+ setopt NO_GLOB_SUBST
+else
+ case `(set -o) 2>/dev/null` in #(
+ *posix*) :
+ set -o posix ;; #(
+ *) :
+ ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+ && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='print -r --'
+ as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+ as_echo='printf %s\n'
+ as_echo_n='printf %s'
+else
+ if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+ as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+ as_echo_n='/usr/ucb/echo -n'
+ else
+ as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+ as_echo_n_body='eval
+ arg=$1;
+ case $arg in #(
+ *"$as_nl"*)
+ expr "X$arg" : "X\\(.*\\)$as_nl";
+ arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+ esac;
+ expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+ '
+ export as_echo_n_body
+ as_echo_n='sh -c $as_echo_n_body as_echo'
+ fi
+ export as_echo_body
+ as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+ PATH_SEPARATOR=:
+ (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+ (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+ PATH_SEPARATOR=';'
+ }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order. Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" "" $as_nl"
+
+# Find who we are. Look in the path if we contain no directory separator.
+case $0 in #((
+ *[\\/]* ) as_myself=$0 ;;
+ *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+ done
+IFS=$as_save_IFS
+
+ ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+ as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+ $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+ exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there. '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+ && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+ as_status=$1; test $as_status -eq 0 && as_status=1
+ if test "$4"; then
+ as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+ $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+ fi
+ $as_echo "$as_me: error: $2" >&2
+ as_fn_exit $as_status
+} # as_fn_error
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+ return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+ set +e
+ as_fn_set_status $1
+ exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+ { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+ eval 'as_fn_append ()
+ {
+ eval $1+=\$2
+ }'
+else
+ as_fn_append ()
+ {
+ eval $1=\$$1\$2
+ }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+ eval 'as_fn_arith ()
+ {
+ as_val=$(( $* ))
+ }'
+else
+ as_fn_arith ()
+ {
+ as_val=`expr "$@" || test $? -eq 1`
+ }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+ test "X`expr 00001 : '.*\(...\)'`" = X001; then
+ as_expr=expr
+else
+ as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+ as_basename=basename
+else
+ as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+ as_dirname=dirname
+else
+ as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+ X"$0" : 'X\(//\)$' \| \
+ X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+ sed '/^.*\/\([^/][^/]*\)\/*$/{
+ s//\1/
+ q
+ }
+ /^X\/\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\/\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+ case `echo 'xy\c'` in
+ *c*) ECHO_T=' ';; # ECHO_T is single tab character.
+ xy) ECHO_C='\c';;
+ *) echo `echo ksh88 bug on AIX 6.1` > /dev/null
+ ECHO_T=' ';;
+ esac;;
+*)
+ ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+ rm -f conf$$.dir/conf$$.file
+else
+ rm -f conf$$.dir
+ mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+ if ln -s conf$$.file conf$$ 2>/dev/null; then
+ as_ln_s='ln -s'
+ # ... but there are two gotchas:
+ # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+ # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+ # In both cases, we have to default to `cp -p'.
+ ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+ as_ln_s='cp -p'
+ elif ln conf$$.file conf$$ 2>/dev/null; then
+ as_ln_s=ln
+ else
+ as_ln_s='cp -p'
+ fi
+else
+ as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+ case $as_dir in #(
+ -*) as_dir=./$as_dir;;
+ esac
+ test -d "$as_dir" || eval $as_mkdir_p || {
+ as_dirs=
+ while :; do
+ case $as_dir in #(
+ *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+ *) as_qdir=$as_dir;;
+ esac
+ as_dirs="'$as_qdir' $as_dirs"
+ as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$as_dir" : 'X\(//\)[^/]' \| \
+ X"$as_dir" : 'X\(//\)$' \| \
+ X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ test -d "$as_dir" && break
+ done
+ test -z "$as_dirs" || eval "mkdir $as_dirs"
+ } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+ as_mkdir_p='mkdir -p "$as_dir"'
+else
+ test -d ./-p && rmdir ./-p
+ as_mkdir_p=false
+fi
+
+if test -x / >/dev/null 2>&1; then
+ as_test_x='test -x'
+else
+ if ls -dL / >/dev/null 2>&1; then
+ as_ls_L_option=L
+ else
+ as_ls_L_option=
+ fi
+ as_test_x='
+ eval sh -c '\''
+ if test -d "$1"; then
+ test -d "$1/.";
+ else
+ case $1 in #(
+ -*)set "./$1";;
+ esac;
+ case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+ ???[sx]*):;;*)false;;esac;fi
+ '\'' sh
+ '
+fi
+as_executable_p=$as_test_x
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by $as_me, which was
+generated by GNU Autoconf 2.67. Invocation command line was
+
+ CONFIG_FILES = $CONFIG_FILES
+ CONFIG_HEADERS = $CONFIG_HEADERS
+ CONFIG_LINKS = $CONFIG_LINKS
+ CONFIG_COMMANDS = $CONFIG_COMMANDS
+ $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
+config_commands="$ac_config_commands"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration. Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+ -h, --help print this help, then exit
+ -V, --version print version number and configuration settings, then exit
+ --config print configuration, then exit
+ -q, --quiet, --silent
+ do not print progress messages
+ -d, --debug don't remove temporary files
+ --recheck update $as_me by reconfiguring in the same conditions
+ --file=FILE[:TEMPLATE]
+ instantiate the configuration file FILE
+ --header=FILE[:TEMPLATE]
+ instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Configuration commands:
+$config_commands
+
+Report bugs to the package provider."
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
+ac_cs_version="\\
+config.status
+configured by $0, generated by GNU Autoconf 2.67,
+ with options \\"\$ac_cs_config\\"
+
+Copyright (C) 2010 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+INSTALL='$INSTALL'
+MKDIR_P='$MKDIR_P'
+AWK='$AWK'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+ case $1 in
+ --*=?*)
+ ac_option=`expr "X$1" : 'X\([^=]*\)='`
+ ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+ ac_shift=:
+ ;;
+ --*=)
+ ac_option=`expr "X$1" : 'X\([^=]*\)='`
+ ac_optarg=
+ ac_shift=:
+ ;;
+ *)
+ ac_option=$1
+ ac_optarg=$2
+ ac_shift=shift
+ ;;
+ esac
+
+ case $ac_option in
+ # Handling of the options.
+ -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+ ac_cs_recheck=: ;;
+ --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+ $as_echo "$ac_cs_version"; exit ;;
+ --config | --confi | --conf | --con | --co | --c )
+ $as_echo "$ac_cs_config"; exit ;;
+ --debug | --debu | --deb | --de | --d | -d )
+ debug=: ;;
+ --file | --fil | --fi | --f )
+ $ac_shift
+ case $ac_optarg in
+ *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ '') as_fn_error $? "missing file argument" ;;
+ esac
+ as_fn_append CONFIG_FILES " '$ac_optarg'"
+ ac_need_defaults=false;;
+ --header | --heade | --head | --hea )
+ $ac_shift
+ case $ac_optarg in
+ *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ esac
+ as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+ ac_need_defaults=false;;
+ --he | --h)
+ # Conflict between --help and --header
+ as_fn_error $? "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+ --help | --hel | -h )
+ $as_echo "$ac_cs_usage"; exit ;;
+ -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+ | -silent | --silent | --silen | --sile | --sil | --si | --s)
+ ac_cs_silent=: ;;
+
+ # This is an error.
+ -*) as_fn_error $? "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+ *) as_fn_append ac_config_targets " $1"
+ ac_need_defaults=false ;;
+
+ esac
+ shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+ exec 6>/dev/null
+ ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+ set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+ shift
+ \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
+ CONFIG_SHELL='$SHELL'
+ export CONFIG_SHELL
+ exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+ echo
+ sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+ $as_echo "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+#
+# INIT-COMMANDS
+#
+AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"
+
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+sed_quote_subst='$sed_quote_subst'
+double_quote_subst='$double_quote_subst'
+delay_variable_subst='$delay_variable_subst'
+macro_version='`$ECHO "X$macro_version" | $Xsed -e "$delay_single_quote_subst"`'
+macro_revision='`$ECHO "X$macro_revision" | $Xsed -e "$delay_single_quote_subst"`'
+enable_shared='`$ECHO "X$enable_shared" | $Xsed -e "$delay_single_quote_subst"`'
+enable_static='`$ECHO "X$enable_static" | $Xsed -e "$delay_single_quote_subst"`'
+pic_mode='`$ECHO "X$pic_mode" | $Xsed -e "$delay_single_quote_subst"`'
+enable_fast_install='`$ECHO "X$enable_fast_install" | $Xsed -e "$delay_single_quote_subst"`'
+host_alias='`$ECHO "X$host_alias" | $Xsed -e "$delay_single_quote_subst"`'
+host='`$ECHO "X$host" | $Xsed -e "$delay_single_quote_subst"`'
+host_os='`$ECHO "X$host_os" | $Xsed -e "$delay_single_quote_subst"`'
+build_alias='`$ECHO "X$build_alias" | $Xsed -e "$delay_single_quote_subst"`'
+build='`$ECHO "X$build" | $Xsed -e "$delay_single_quote_subst"`'
+build_os='`$ECHO "X$build_os" | $Xsed -e "$delay_single_quote_subst"`'
+SED='`$ECHO "X$SED" | $Xsed -e "$delay_single_quote_subst"`'
+Xsed='`$ECHO "X$Xsed" | $Xsed -e "$delay_single_quote_subst"`'
+GREP='`$ECHO "X$GREP" | $Xsed -e "$delay_single_quote_subst"`'
+EGREP='`$ECHO "X$EGREP" | $Xsed -e "$delay_single_quote_subst"`'
+FGREP='`$ECHO "X$FGREP" | $Xsed -e "$delay_single_quote_subst"`'
+LD='`$ECHO "X$LD" | $Xsed -e "$delay_single_quote_subst"`'
+NM='`$ECHO "X$NM" | $Xsed -e "$delay_single_quote_subst"`'
+LN_S='`$ECHO "X$LN_S" | $Xsed -e "$delay_single_quote_subst"`'
+max_cmd_len='`$ECHO "X$max_cmd_len" | $Xsed -e "$delay_single_quote_subst"`'
+ac_objext='`$ECHO "X$ac_objext" | $Xsed -e "$delay_single_quote_subst"`'
+exeext='`$ECHO "X$exeext" | $Xsed -e "$delay_single_quote_subst"`'
+lt_unset='`$ECHO "X$lt_unset" | $Xsed -e "$delay_single_quote_subst"`'
+lt_SP2NL='`$ECHO "X$lt_SP2NL" | $Xsed -e "$delay_single_quote_subst"`'
+lt_NL2SP='`$ECHO "X$lt_NL2SP" | $Xsed -e "$delay_single_quote_subst"`'
+reload_flag='`$ECHO "X$reload_flag" | $Xsed -e "$delay_single_quote_subst"`'
+reload_cmds='`$ECHO "X$reload_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+OBJDUMP='`$ECHO "X$OBJDUMP" | $Xsed -e "$delay_single_quote_subst"`'
+deplibs_check_method='`$ECHO "X$deplibs_check_method" | $Xsed -e "$delay_single_quote_subst"`'
+file_magic_cmd='`$ECHO "X$file_magic_cmd" | $Xsed -e "$delay_single_quote_subst"`'
+AR='`$ECHO "X$AR" | $Xsed -e "$delay_single_quote_subst"`'
+AR_FLAGS='`$ECHO "X$AR_FLAGS" | $Xsed -e "$delay_single_quote_subst"`'
+STRIP='`$ECHO "X$STRIP" | $Xsed -e "$delay_single_quote_subst"`'
+RANLIB='`$ECHO "X$RANLIB" | $Xsed -e "$delay_single_quote_subst"`'
+old_postinstall_cmds='`$ECHO "X$old_postinstall_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+old_postuninstall_cmds='`$ECHO "X$old_postuninstall_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+old_archive_cmds='`$ECHO "X$old_archive_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+CC='`$ECHO "X$CC" | $Xsed -e "$delay_single_quote_subst"`'
+CFLAGS='`$ECHO "X$CFLAGS" | $Xsed -e "$delay_single_quote_subst"`'
+compiler='`$ECHO "X$compiler" | $Xsed -e "$delay_single_quote_subst"`'
+GCC='`$ECHO "X$GCC" | $Xsed -e "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_pipe='`$ECHO "X$lt_cv_sys_global_symbol_pipe" | $Xsed -e "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_cdecl='`$ECHO "X$lt_cv_sys_global_symbol_to_cdecl" | $Xsed -e "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_c_name_address='`$ECHO "X$lt_cv_sys_global_symbol_to_c_name_address" | $Xsed -e "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix='`$ECHO "X$lt_cv_sys_global_symbol_to_c_name_address_lib_prefix" | $Xsed -e "$delay_single_quote_subst"`'
+objdir='`$ECHO "X$objdir" | $Xsed -e "$delay_single_quote_subst"`'
+SHELL='`$ECHO "X$SHELL" | $Xsed -e "$delay_single_quote_subst"`'
+ECHO='`$ECHO "X$ECHO" | $Xsed -e "$delay_single_quote_subst"`'
+MAGIC_CMD='`$ECHO "X$MAGIC_CMD" | $Xsed -e "$delay_single_quote_subst"`'
+lt_prog_compiler_no_builtin_flag='`$ECHO "X$lt_prog_compiler_no_builtin_flag" | $Xsed -e "$delay_single_quote_subst"`'
+lt_prog_compiler_wl='`$ECHO "X$lt_prog_compiler_wl" | $Xsed -e "$delay_single_quote_subst"`'
+lt_prog_compiler_pic='`$ECHO "X$lt_prog_compiler_pic" | $Xsed -e "$delay_single_quote_subst"`'
+lt_prog_compiler_static='`$ECHO "X$lt_prog_compiler_static" | $Xsed -e "$delay_single_quote_subst"`'
+lt_cv_prog_compiler_c_o='`$ECHO "X$lt_cv_prog_compiler_c_o" | $Xsed -e "$delay_single_quote_subst"`'
+need_locks='`$ECHO "X$need_locks" | $Xsed -e "$delay_single_quote_subst"`'
+DSYMUTIL='`$ECHO "X$DSYMUTIL" | $Xsed -e "$delay_single_quote_subst"`'
+NMEDIT='`$ECHO "X$NMEDIT" | $Xsed -e "$delay_single_quote_subst"`'
+LIPO='`$ECHO "X$LIPO" | $Xsed -e "$delay_single_quote_subst"`'
+OTOOL='`$ECHO "X$OTOOL" | $Xsed -e "$delay_single_quote_subst"`'
+OTOOL64='`$ECHO "X$OTOOL64" | $Xsed -e "$delay_single_quote_subst"`'
+libext='`$ECHO "X$libext" | $Xsed -e "$delay_single_quote_subst"`'
+shrext_cmds='`$ECHO "X$shrext_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+extract_expsyms_cmds='`$ECHO "X$extract_expsyms_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+archive_cmds_need_lc='`$ECHO "X$archive_cmds_need_lc" | $Xsed -e "$delay_single_quote_subst"`'
+enable_shared_with_static_runtimes='`$ECHO "X$enable_shared_with_static_runtimes" | $Xsed -e "$delay_single_quote_subst"`'
+export_dynamic_flag_spec='`$ECHO "X$export_dynamic_flag_spec" | $Xsed -e "$delay_single_quote_subst"`'
+whole_archive_flag_spec='`$ECHO "X$whole_archive_flag_spec" | $Xsed -e "$delay_single_quote_subst"`'
+compiler_needs_object='`$ECHO "X$compiler_needs_object" | $Xsed -e "$delay_single_quote_subst"`'
+old_archive_from_new_cmds='`$ECHO "X$old_archive_from_new_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+old_archive_from_expsyms_cmds='`$ECHO "X$old_archive_from_expsyms_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+archive_cmds='`$ECHO "X$archive_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+archive_expsym_cmds='`$ECHO "X$archive_expsym_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+module_cmds='`$ECHO "X$module_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+module_expsym_cmds='`$ECHO "X$module_expsym_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+with_gnu_ld='`$ECHO "X$with_gnu_ld" | $Xsed -e "$delay_single_quote_subst"`'
+allow_undefined_flag='`$ECHO "X$allow_undefined_flag" | $Xsed -e "$delay_single_quote_subst"`'
+no_undefined_flag='`$ECHO "X$no_undefined_flag" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_libdir_flag_spec='`$ECHO "X$hardcode_libdir_flag_spec" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_libdir_flag_spec_ld='`$ECHO "X$hardcode_libdir_flag_spec_ld" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_libdir_separator='`$ECHO "X$hardcode_libdir_separator" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_direct='`$ECHO "X$hardcode_direct" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_direct_absolute='`$ECHO "X$hardcode_direct_absolute" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_minus_L='`$ECHO "X$hardcode_minus_L" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_shlibpath_var='`$ECHO "X$hardcode_shlibpath_var" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_automatic='`$ECHO "X$hardcode_automatic" | $Xsed -e "$delay_single_quote_subst"`'
+inherit_rpath='`$ECHO "X$inherit_rpath" | $Xsed -e "$delay_single_quote_subst"`'
+link_all_deplibs='`$ECHO "X$link_all_deplibs" | $Xsed -e "$delay_single_quote_subst"`'
+fix_srcfile_path='`$ECHO "X$fix_srcfile_path" | $Xsed -e "$delay_single_quote_subst"`'
+always_export_symbols='`$ECHO "X$always_export_symbols" | $Xsed -e "$delay_single_quote_subst"`'
+export_symbols_cmds='`$ECHO "X$export_symbols_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+exclude_expsyms='`$ECHO "X$exclude_expsyms" | $Xsed -e "$delay_single_quote_subst"`'
+include_expsyms='`$ECHO "X$include_expsyms" | $Xsed -e "$delay_single_quote_subst"`'
+prelink_cmds='`$ECHO "X$prelink_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+file_list_spec='`$ECHO "X$file_list_spec" | $Xsed -e "$delay_single_quote_subst"`'
+variables_saved_for_relink='`$ECHO "X$variables_saved_for_relink" | $Xsed -e "$delay_single_quote_subst"`'
+need_lib_prefix='`$ECHO "X$need_lib_prefix" | $Xsed -e "$delay_single_quote_subst"`'
+need_version='`$ECHO "X$need_version" | $Xsed -e "$delay_single_quote_subst"`'
+version_type='`$ECHO "X$version_type" | $Xsed -e "$delay_single_quote_subst"`'
+runpath_var='`$ECHO "X$runpath_var" | $Xsed -e "$delay_single_quote_subst"`'
+shlibpath_var='`$ECHO "X$shlibpath_var" | $Xsed -e "$delay_single_quote_subst"`'
+shlibpath_overrides_runpath='`$ECHO "X$shlibpath_overrides_runpath" | $Xsed -e "$delay_single_quote_subst"`'
+libname_spec='`$ECHO "X$libname_spec" | $Xsed -e "$delay_single_quote_subst"`'
+library_names_spec='`$ECHO "X$library_names_spec" | $Xsed -e "$delay_single_quote_subst"`'
+soname_spec='`$ECHO "X$soname_spec" | $Xsed -e "$delay_single_quote_subst"`'
+postinstall_cmds='`$ECHO "X$postinstall_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+postuninstall_cmds='`$ECHO "X$postuninstall_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+finish_cmds='`$ECHO "X$finish_cmds" | $Xsed -e "$delay_single_quote_subst"`'
+finish_eval='`$ECHO "X$finish_eval" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_into_libs='`$ECHO "X$hardcode_into_libs" | $Xsed -e "$delay_single_quote_subst"`'
+sys_lib_search_path_spec='`$ECHO "X$sys_lib_search_path_spec" | $Xsed -e "$delay_single_quote_subst"`'
+sys_lib_dlsearch_path_spec='`$ECHO "X$sys_lib_dlsearch_path_spec" | $Xsed -e "$delay_single_quote_subst"`'
+hardcode_action='`$ECHO "X$hardcode_action" | $Xsed -e "$delay_single_quote_subst"`'
+enable_dlopen='`$ECHO "X$enable_dlopen" | $Xsed -e "$delay_single_quote_subst"`'
+enable_dlopen_self='`$ECHO "X$enable_dlopen_self" | $Xsed -e "$delay_single_quote_subst"`'
+enable_dlopen_self_static='`$ECHO "X$enable_dlopen_self_static" | $Xsed -e "$delay_single_quote_subst"`'
+old_striplib='`$ECHO "X$old_striplib" | $Xsed -e "$delay_single_quote_subst"`'
+striplib='`$ECHO "X$striplib" | $Xsed -e "$delay_single_quote_subst"`'
+
+LTCC='$LTCC'
+LTCFLAGS='$LTCFLAGS'
+compiler='$compiler_DEFAULT'
+
+# Quote evaled strings.
+for var in SED \
+GREP \
+EGREP \
+FGREP \
+LD \
+NM \
+LN_S \
+lt_SP2NL \
+lt_NL2SP \
+reload_flag \
+OBJDUMP \
+deplibs_check_method \
+file_magic_cmd \
+AR \
+AR_FLAGS \
+STRIP \
+RANLIB \
+CC \
+CFLAGS \
+compiler \
+lt_cv_sys_global_symbol_pipe \
+lt_cv_sys_global_symbol_to_cdecl \
+lt_cv_sys_global_symbol_to_c_name_address \
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix \
+SHELL \
+ECHO \
+lt_prog_compiler_no_builtin_flag \
+lt_prog_compiler_wl \
+lt_prog_compiler_pic \
+lt_prog_compiler_static \
+lt_cv_prog_compiler_c_o \
+need_locks \
+DSYMUTIL \
+NMEDIT \
+LIPO \
+OTOOL \
+OTOOL64 \
+shrext_cmds \
+export_dynamic_flag_spec \
+whole_archive_flag_spec \
+compiler_needs_object \
+with_gnu_ld \
+allow_undefined_flag \
+no_undefined_flag \
+hardcode_libdir_flag_spec \
+hardcode_libdir_flag_spec_ld \
+hardcode_libdir_separator \
+fix_srcfile_path \
+exclude_expsyms \
+include_expsyms \
+file_list_spec \
+variables_saved_for_relink \
+libname_spec \
+library_names_spec \
+soname_spec \
+finish_eval \
+old_striplib \
+striplib; do
+ case \`eval \\\\\$ECHO "X\\\\\$\$var"\` in
+ *[\\\\\\\`\\"\\\$]*)
+ eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"X\\\$\$var\\" | \\\$Xsed -e \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
+ ;;
+ *)
+ eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+ ;;
+ esac
+done
+
+# Double-quote double-evaled strings.
+for var in reload_cmds \
+old_postinstall_cmds \
+old_postuninstall_cmds \
+old_archive_cmds \
+extract_expsyms_cmds \
+old_archive_from_new_cmds \
+old_archive_from_expsyms_cmds \
+archive_cmds \
+archive_expsym_cmds \
+module_cmds \
+module_expsym_cmds \
+export_symbols_cmds \
+prelink_cmds \
+postinstall_cmds \
+postuninstall_cmds \
+finish_cmds \
+sys_lib_search_path_spec \
+sys_lib_dlsearch_path_spec; do
+ case \`eval \\\\\$ECHO "X\\\\\$\$var"\` in
+ *[\\\\\\\`\\"\\\$]*)
+ eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"X\\\$\$var\\" | \\\$Xsed -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
+ ;;
+ *)
+ eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+ ;;
+ esac
+done
+
+# Fix-up fallback echo if it was mangled by the above quoting rules.
+case \$lt_ECHO in
+*'\\\$0 --fallback-echo"') lt_ECHO=\`\$ECHO "X\$lt_ECHO" | \$Xsed -e 's/\\\\\\\\\\\\\\\$0 --fallback-echo"\$/\$0 --fallback-echo"/'\`
+ ;;
+esac
+
+ac_aux_dir='$ac_aux_dir'
+xsi_shell='$xsi_shell'
+lt_shell_append='$lt_shell_append'
+
+# See if we are running on zsh, and set the options which allow our
+# commands through without removal of \ escapes INIT.
+if test -n "\${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+fi
+
+
+ PACKAGE='$PACKAGE'
+ VERSION='$VERSION'
+ TIMESTAMP='$TIMESTAMP'
+ RM='$RM'
+ ofile='$ofile'
+
+
+
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+ case $ac_config_target in
+ "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;;
+ "depfiles") CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
+ "libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;;
+ "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+
+ *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5 ;;
+ esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used. Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+ test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+ test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+ test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience. Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+ tmp=
+ trap 'exit_status=$?
+ { test -z "$tmp" || test ! -d "$tmp" || rm -fr "$tmp"; } && exit $exit_status
+' 0
+ trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+ tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+ test -n "$tmp" && test -d "$tmp"
+} ||
+{
+ tmp=./conf$$-$RANDOM
+ (umask 077 && mkdir "$tmp")
+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+ eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+ ac_cs_awk_cr='\\r'
+else
+ ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+ echo "cat >conf$$subs.awk <<_ACEOF" &&
+ echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+ echo "_ACEOF"
+} >conf$$subs.sh ||
+ as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+ . ./conf$$subs.sh ||
+ as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+
+ ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+ if test $ac_delim_n = $ac_delim_num; then
+ break
+ elif $ac_last_try; then
+ as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+ else
+ ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+ fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\)..*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\)..*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' <conf$$subs.awk | sed '
+/^[^""]/{
+ N
+ s/\n//
+}
+' >>$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$tmp/subs1.awk" <<_ACAWK &&
+ for (key in S) S_is_set[key] = 1
+ FS = "\a"
+
+}
+{
+ line = $ 0
+ nfields = split(line, field, "@")
+ substed = 0
+ len = length(field[1])
+ for (i = 2; i < nfields; i++) {
+ key = field[i]
+ keylen = length(key)
+ if (S_is_set[key]) {
+ value = S[key]
+ line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+ len += length(value) + length(field[++i])
+ substed = 1
+ } else
+ len += 1 + keylen
+ }
+
+ print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+ sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+ cat
+fi < "$tmp/subs1.awk" > "$tmp/subs.awk" \
+ || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove sole $(srcdir),
+# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+ ac_vpsub='/^[ ]*VPATH[ ]*=[ ]*/{
+h
+s///
+s/^/:/
+s/[ ]*$/:/
+s/:\$(srcdir):/:/g
+s/:\${srcdir}:/:/g
+s/:@srcdir@:/:/g
+s/^:*//
+s/:*$//
+x
+s/\(=[ ]*\).*/\1/
+G
+s/\n//
+s/^[^=]*=[ ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+ ac_t=`sed -n "/$ac_delim/p" confdefs.h`
+ if test -z "$ac_t"; then
+ break
+ elif $ac_last_try; then
+ as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5
+ else
+ ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+ fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any. Preserve backslash
+# newline sequences.
+
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[ ]*#[ ]*define[ ][ ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[ ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[ ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' <confdefs.h | sed '
+s/'"$ac_delim"'/"\\\
+"/g' >>$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ for (key in D) D_is_set[key] = 1
+ FS = "\a"
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+ line = \$ 0
+ split(line, arg, " ")
+ if (arg[1] == "#") {
+ defundef = arg[2]
+ mac1 = arg[3]
+ } else {
+ defundef = substr(arg[1], 2)
+ mac1 = arg[2]
+ }
+ split(mac1, mac2, "(") #)
+ macro = mac2[1]
+ prefix = substr(line, 1, index(line, defundef) - 1)
+ if (D_is_set[macro]) {
+ # Preserve the white space surrounding the "#".
+ print prefix "define", macro P[macro] D[macro]
+ next
+ } else {
+ # Replace #undef with comments. This is necessary, for example,
+ # in the case of _POSIX_SOURCE, which is predefined and required
+ # on some systems where configure will not decide to define it.
+ if (defundef == "undef") {
+ print "/*", prefix defundef, macro, "*/"
+ next
+ }
+ }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X " :F $CONFIG_FILES :H $CONFIG_HEADERS :C $CONFIG_COMMANDS"
+shift
+for ac_tag
+do
+ case $ac_tag in
+ :[FHLC]) ac_mode=$ac_tag; continue;;
+ esac
+ case $ac_mode$ac_tag in
+ :[FHL]*:*);;
+ :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5 ;;
+ :[FH]-) ac_tag=-:-;;
+ :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+ esac
+ ac_save_IFS=$IFS
+ IFS=:
+ set x $ac_tag
+ IFS=$ac_save_IFS
+ shift
+ ac_file=$1
+ shift
+
+ case $ac_mode in
+ :L) ac_source=$1;;
+ :[FH])
+ ac_file_inputs=
+ for ac_f
+ do
+ case $ac_f in
+ -) ac_f="$tmp/stdin";;
+ *) # Look for the file first in the build tree, then in the source tree
+ # (if the path is not absolute). The absolute path cannot be DOS-style,
+ # because $ac_f cannot contain `:'.
+ test -f "$ac_f" ||
+ case $ac_f in
+ [\\/$]*) false;;
+ *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+ esac ||
+ as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5 ;;
+ esac
+ case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+ as_fn_append ac_file_inputs " '$ac_f'"
+ done
+
+ # Let's still pretend it is `configure' which instantiates (i.e., don't
+ # use $as_me), people would be surprised to read:
+ # /* config.h. Generated by config.status. */
+ configure_input='Generated from '`
+ $as_echo "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+ `' by configure.'
+ if test x"$ac_file" != x-; then
+ configure_input="$ac_file. $configure_input"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+$as_echo "$as_me: creating $ac_file" >&6;}
+ fi
+ # Neutralize special characters interpreted by sed in replacement strings.
+ case $configure_input in #(
+ *\&* | *\|* | *\\* )
+ ac_sed_conf_input=`$as_echo "$configure_input" |
+ sed 's/[\\\\&|]/\\\\&/g'`;; #(
+ *) ac_sed_conf_input=$configure_input;;
+ esac
+
+ case $ac_tag in
+ *:-:* | *:-) cat >"$tmp/stdin" \
+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
+ esac
+ ;;
+ esac
+
+ ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$ac_file" : 'X\(//\)[^/]' \| \
+ X"$ac_file" : 'X\(//\)$' \| \
+ X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$ac_file" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ as_dir="$ac_dir"; as_fn_mkdir_p
+ ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+ ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+ # A ".." for each directory in $ac_dir_suffix.
+ ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+ case $ac_top_builddir_sub in
+ "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+ *) ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+ esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+ .) # We are building in place.
+ ac_srcdir=.
+ ac_top_srcdir=$ac_top_builddir_sub
+ ac_abs_top_srcdir=$ac_pwd ;;
+ [\\/]* | ?:[\\/]* ) # Absolute name.
+ ac_srcdir=$srcdir$ac_dir_suffix;
+ ac_top_srcdir=$srcdir
+ ac_abs_top_srcdir=$srcdir ;;
+ *) # Relative name.
+ ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+ ac_top_srcdir=$ac_top_build_prefix$srcdir
+ ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+ case $ac_mode in
+ :F)
+ #
+ # CONFIG_FILE
+ #
+
+ case $INSTALL in
+ [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+ *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
+ esac
+ ac_MKDIR_P=$MKDIR_P
+ case $MKDIR_P in
+ [\\/$]* | ?:[\\/]* ) ;;
+ */*) ac_MKDIR_P=$ac_top_build_prefix$MKDIR_P ;;
+ esac
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+ p
+ q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ ac_datarootdir_hack='
+ s&@datadir@&$datadir&g
+ s&@docdir@&$docdir&g
+ s&@infodir@&$infodir&g
+ s&@localedir@&$localedir&g
+ s&@mandir@&$mandir&g
+ s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+s&@INSTALL@&$ac_INSTALL&;t t
+s&@MKDIR_P@&$ac_MKDIR_P&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$tmp/subs.awk" >$tmp/out \
+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+ { ac_out=`sed -n '/\${datarootdir}/p' "$tmp/out"`; test -n "$ac_out"; } &&
+ { ac_out=`sed -n '/^[ ]*datarootdir[ ]*:*=/p' "$tmp/out"`; test -z "$ac_out"; } &&
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined. Please make sure it is defined" >&5
+$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined. Please make sure it is defined" >&2;}
+
+ rm -f "$tmp/stdin"
+ case $ac_file in
+ -) cat "$tmp/out" && rm -f "$tmp/out";;
+ *) rm -f "$ac_file" && mv "$tmp/out" "$ac_file";;
+ esac \
+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+ ;;
+ :H)
+ #
+ # CONFIG_HEADER
+ #
+ if test x"$ac_file" != x-; then
+ {
+ $as_echo "/* $configure_input */" \
+ && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs"
+ } >"$tmp/config.h" \
+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+ if diff "$ac_file" "$tmp/config.h" >/dev/null 2>&1; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+$as_echo "$as_me: $ac_file is unchanged" >&6;}
+ else
+ rm -f "$ac_file"
+ mv "$tmp/config.h" "$ac_file" \
+ || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+ fi
+ else
+ $as_echo "/* $configure_input */" \
+ && eval '$AWK -f "$tmp/defines.awk"' "$ac_file_inputs" \
+ || as_fn_error $? "could not create -" "$LINENO" 5
+ fi
+# Compute "$ac_file"'s index in $config_headers.
+_am_arg="$ac_file"
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+ case $_am_header in
+ $_am_arg | $_am_arg:* )
+ break ;;
+ * )
+ _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+ esac
+done
+echo "timestamp for $_am_arg" >`$as_dirname -- "$_am_arg" ||
+$as_expr X"$_am_arg" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$_am_arg" : 'X\(//\)[^/]' \| \
+ X"$_am_arg" : 'X\(//\)$' \| \
+ X"$_am_arg" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$_am_arg" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`/stamp-h$_am_stamp_count
+ ;;
+
+ :C) { $as_echo "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
+$as_echo "$as_me: executing $ac_file commands" >&6;}
+ ;;
+ esac
+
+
+ case $ac_file$ac_mode in
+ "depfiles":C) test x"$AMDEP_TRUE" != x"" || {
+ # Autoconf 2.62 quotes --file arguments for eval, but not when files
+ # are listed without --file. Let's play safe and only enable the eval
+ # if we detect the quoting.
+ case $CONFIG_FILES in
+ *\'*) eval set x "$CONFIG_FILES" ;;
+ *) set x $CONFIG_FILES ;;
+ esac
+ shift
+ for mf
+ do
+ # Strip MF so we end up with the name of the file.
+ mf=`echo "$mf" | sed -e 's/:.*$//'`
+ # Check whether this is an Automake generated Makefile or not.
+ # We used to match only the files named `Makefile.in', but
+ # some people rename them; so instead we look at the file content.
+ # Grep'ing the first line is not enough: some people post-process
+ # each Makefile.in and add a new line on top of each file to say so.
+ # Grep'ing the whole file is not good either: AIX grep has a line
+ # limit of 2048, but all sed's we know have understand at least 4000.
+ if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
+ dirpart=`$as_dirname -- "$mf" ||
+$as_expr X"$mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$mf" : 'X\(//\)[^/]' \| \
+ X"$mf" : 'X\(//\)$' \| \
+ X"$mf" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$mf" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ else
+ continue
+ fi
+ # Extract the definition of DEPDIR, am__include, and am__quote
+ # from the Makefile without running `make'.
+ DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
+ test -z "$DEPDIR" && continue
+ am__include=`sed -n 's/^am__include = //p' < "$mf"`
+ test -z "am__include" && continue
+ am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
+ # When using ansi2knr, U may be empty or an underscore; expand it
+ U=`sed -n 's/^U = //p' < "$mf"`
+ # Find all dependency output files, they are included files with
+ # $(DEPDIR) in their names. We invoke sed twice because it is the
+ # simplest approach to changing $(DEPDIR) to its actual value in the
+ # expansion.
+ for file in `sed -n "
+ s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
+ sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
+ # Make sure the directory exists.
+ test -f "$dirpart/$file" && continue
+ fdir=`$as_dirname -- "$file" ||
+$as_expr X"$file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+ X"$file" : 'X\(//\)[^/]' \| \
+ X"$file" : 'X\(//\)$' \| \
+ X"$file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$file" |
+ sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)[^/].*/{
+ s//\1/
+ q
+ }
+ /^X\(\/\/\)$/{
+ s//\1/
+ q
+ }
+ /^X\(\/\).*/{
+ s//\1/
+ q
+ }
+ s/.*/./; q'`
+ as_dir=$dirpart/$fdir; as_fn_mkdir_p
+ # echo "creating $dirpart/$file"
+ echo '# dummy' > "$dirpart/$file"
+ done
+ done
+}
+ ;;
+ "libtool":C)
+
+ # See if we are running on zsh, and set the options which allow our
+ # commands through without removal of \ escapes.
+ if test -n "${ZSH_VERSION+set}" ; then
+ setopt NO_GLOB_SUBST
+ fi
+
+ cfgfile="${ofile}T"
+ trap "$RM \"$cfgfile\"; exit 1" 1 2 15
+ $RM "$cfgfile"
+
+ cat <<_LT_EOF >> "$cfgfile"
+#! $SHELL
+
+# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
+# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
+# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+# NOTE: Changes made to this file will be lost: look at ltmain.sh.
+#
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+# 2006, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gordon Matzigkeit, 1996
+#
+# This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING. If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
+# obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+
+# The names of the tagged configurations supported by this script.
+available_tags=""
+
+# ### BEGIN LIBTOOL CONFIG
+
+# Which release of libtool.m4 was used?
+macro_version=$macro_version
+macro_revision=$macro_revision
+
+# Whether or not to build shared libraries.
+build_libtool_libs=$enable_shared
+
+# Whether or not to build static libraries.
+build_old_libs=$enable_static
+
+# What type of objects to build.
+pic_mode=$pic_mode
+
+# Whether or not to optimize for fast installation.
+fast_install=$enable_fast_install
+
+# The host system.
+host_alias=$host_alias
+host=$host
+host_os=$host_os
+
+# The build system.
+build_alias=$build_alias
+build=$build
+build_os=$build_os
+
+# A sed program that does not truncate output.
+SED=$lt_SED
+
+# Sed that helps us avoid accidentally triggering echo(1) options like -n.
+Xsed="\$SED -e 1s/^X//"
+
+# A grep program that handles long lines.
+GREP=$lt_GREP
+
+# An ERE matcher.
+EGREP=$lt_EGREP
+
+# A literal string matcher.
+FGREP=$lt_FGREP
+
+# A BSD- or MS-compatible name lister.
+NM=$lt_NM
+
+# Whether we need soft or hard links.
+LN_S=$lt_LN_S
+
+# What is the maximum length of a command?
+max_cmd_len=$max_cmd_len
+
+# Object file suffix (normally "o").
+objext=$ac_objext
+
+# Executable file suffix (normally "").
+exeext=$exeext
+
+# whether the shell understands "unset".
+lt_unset=$lt_unset
+
+# turn spaces into newlines.
+SP2NL=$lt_lt_SP2NL
+
+# turn newlines into spaces.
+NL2SP=$lt_lt_NL2SP
+
+# How to create reloadable object files.
+reload_flag=$lt_reload_flag
+reload_cmds=$lt_reload_cmds
+
+# An object symbol dumper.
+OBJDUMP=$lt_OBJDUMP
+
+# Method to check whether dependent libraries are shared objects.
+deplibs_check_method=$lt_deplibs_check_method
+
+# Command to use when deplibs_check_method == "file_magic".
+file_magic_cmd=$lt_file_magic_cmd
+
+# The archiver.
+AR=$lt_AR
+AR_FLAGS=$lt_AR_FLAGS
+
+# A symbol stripping program.
+STRIP=$lt_STRIP
+
+# Commands used to install an old-style archive.
+RANLIB=$lt_RANLIB
+old_postinstall_cmds=$lt_old_postinstall_cmds
+old_postuninstall_cmds=$lt_old_postuninstall_cmds
+
+# A C compiler.
+LTCC=$lt_CC
+
+# LTCC compiler flags.
+LTCFLAGS=$lt_CFLAGS
+
+# Take the output of nm and produce a listing of raw symbols and C names.
+global_symbol_pipe=$lt_lt_cv_sys_global_symbol_pipe
+
+# Transform the output of nm in a proper C declaration.
+global_symbol_to_cdecl=$lt_lt_cv_sys_global_symbol_to_cdecl
+
+# Transform the output of nm in a C name address pair.
+global_symbol_to_c_name_address=$lt_lt_cv_sys_global_symbol_to_c_name_address
+
+# Transform the output of nm in a C name address pair when lib prefix is needed.
+global_symbol_to_c_name_address_lib_prefix=$lt_lt_cv_sys_global_symbol_to_c_name_address_lib_prefix
+
+# The name of the directory that contains temporary libtool files.
+objdir=$objdir
+
+# Shell to use when invoking shell scripts.
+SHELL=$lt_SHELL
+
+# An echo program that does not interpret backslashes.
+ECHO=$lt_ECHO
+
+# Used to examine libraries when file_magic_cmd begins with "file".
+MAGIC_CMD=$MAGIC_CMD
+
+# Must we lock files when doing compilation?
+need_locks=$lt_need_locks
+
+# Tool to manipulate archived DWARF debug symbol files on Mac OS X.
+DSYMUTIL=$lt_DSYMUTIL
+
+# Tool to change global to local symbols on Mac OS X.
+NMEDIT=$lt_NMEDIT
+
+# Tool to manipulate fat objects and archives on Mac OS X.
+LIPO=$lt_LIPO
+
+# ldd/readelf like tool for Mach-O binaries on Mac OS X.
+OTOOL=$lt_OTOOL
+
+# ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4.
+OTOOL64=$lt_OTOOL64
+
+# Old archive suffix (normally "a").
+libext=$libext
+
+# Shared library suffix (normally ".so").
+shrext_cmds=$lt_shrext_cmds
+
+# The commands to extract the exported symbol list from a shared archive.
+extract_expsyms_cmds=$lt_extract_expsyms_cmds
+
+# Variables whose values should be saved in libtool wrapper scripts and
+# restored at link time.
+variables_saved_for_relink=$lt_variables_saved_for_relink
+
+# Do we need the "lib" prefix for modules?
+need_lib_prefix=$need_lib_prefix
+
+# Do we need a version for libraries?
+need_version=$need_version
+
+# Library versioning type.
+version_type=$version_type
+
+# Shared library runtime path variable.
+runpath_var=$runpath_var
+
+# Shared library path variable.
+shlibpath_var=$shlibpath_var
+
+# Is shlibpath searched before the hard-coded library search path?
+shlibpath_overrides_runpath=$shlibpath_overrides_runpath
+
+# Format of library name prefix.
+libname_spec=$lt_libname_spec
+
+# List of archive names. First name is the real one, the rest are links.
+# The last name is the one that the linker finds with -lNAME
+library_names_spec=$lt_library_names_spec
+
+# The coded name of the library, if different from the real name.
+soname_spec=$lt_soname_spec
+
+# Command to use after installation of a shared archive.
+postinstall_cmds=$lt_postinstall_cmds
+
+# Command to use after uninstallation of a shared archive.
+postuninstall_cmds=$lt_postuninstall_cmds
+
+# Commands used to finish a libtool library installation in a directory.
+finish_cmds=$lt_finish_cmds
+
+# As "finish_cmds", except a single script fragment to be evaled but
+# not shown.
+finish_eval=$lt_finish_eval
+
+# Whether we should hardcode library paths into libraries.
+hardcode_into_libs=$hardcode_into_libs
+
+# Compile-time system search path for libraries.
+sys_lib_search_path_spec=$lt_sys_lib_search_path_spec
+
+# Run-time system search path for libraries.
+sys_lib_dlsearch_path_spec=$lt_sys_lib_dlsearch_path_spec
+
+# Whether dlopen is supported.
+dlopen_support=$enable_dlopen
+
+# Whether dlopen of programs is supported.
+dlopen_self=$enable_dlopen_self
+
+# Whether dlopen of statically linked programs is supported.
+dlopen_self_static=$enable_dlopen_self_static
+
+# Commands to strip libraries.
+old_striplib=$lt_old_striplib
+striplib=$lt_striplib
+
+
+# The linker used to build libraries.
+LD=$lt_LD
+
+# Commands used to build an old-style archive.
+old_archive_cmds=$lt_old_archive_cmds
+
+# A language specific compiler.
+CC=$lt_compiler
+
+# Is the compiler the GNU compiler?
+with_gcc=$GCC
+
+# Compiler flag to turn off builtin functions.
+no_builtin_flag=$lt_lt_prog_compiler_no_builtin_flag
+
+# How to pass a linker flag through the compiler.
+wl=$lt_lt_prog_compiler_wl
+
+# Additional compiler flags for building library objects.
+pic_flag=$lt_lt_prog_compiler_pic
+
+# Compiler flag to prevent dynamic linking.
+link_static_flag=$lt_lt_prog_compiler_static
+
+# Does compiler simultaneously support -c and -o options?
+compiler_c_o=$lt_lt_cv_prog_compiler_c_o
+
+# Whether or not to add -lc for building shared libraries.
+build_libtool_need_lc=$archive_cmds_need_lc
+
+# Whether or not to disallow shared libs when runtime libs are static.
+allow_libtool_libs_with_static_runtimes=$enable_shared_with_static_runtimes
+
+# Compiler flag to allow reflexive dlopens.
+export_dynamic_flag_spec=$lt_export_dynamic_flag_spec
+
+# Compiler flag to generate shared objects directly from archives.
+whole_archive_flag_spec=$lt_whole_archive_flag_spec
+
+# Whether the compiler copes with passing no objects directly.
+compiler_needs_object=$lt_compiler_needs_object
+
+# Create an old-style archive from a shared archive.
+old_archive_from_new_cmds=$lt_old_archive_from_new_cmds
+
+# Create a temporary old-style archive to link instead of a shared archive.
+old_archive_from_expsyms_cmds=$lt_old_archive_from_expsyms_cmds
+
+# Commands used to build a shared archive.
+archive_cmds=$lt_archive_cmds
+archive_expsym_cmds=$lt_archive_expsym_cmds
+
+# Commands used to build a loadable module if different from building
+# a shared archive.
+module_cmds=$lt_module_cmds
+module_expsym_cmds=$lt_module_expsym_cmds
+
+# Whether we are building with GNU ld or not.
+with_gnu_ld=$lt_with_gnu_ld
+
+# Flag that allows shared libraries with undefined symbols to be built.
+allow_undefined_flag=$lt_allow_undefined_flag
+
+# Flag that enforces no undefined symbols.
+no_undefined_flag=$lt_no_undefined_flag
+
+# Flag to hardcode \$libdir into a binary during linking.
+# This must work even if \$libdir does not exist
+hardcode_libdir_flag_spec=$lt_hardcode_libdir_flag_spec
+
+# If ld is used when linking, flag to hardcode \$libdir into a binary
+# during linking. This must work even if \$libdir does not exist.
+hardcode_libdir_flag_spec_ld=$lt_hardcode_libdir_flag_spec_ld
+
+# Whether we need a single "-rpath" flag with a separated argument.
+hardcode_libdir_separator=$lt_hardcode_libdir_separator
+
+# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
+# DIR into the resulting binary.
+hardcode_direct=$hardcode_direct
+
+# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
+# DIR into the resulting binary and the resulting library dependency is
+# "absolute",i.e impossible to change by setting \${shlibpath_var} if the
+# library is relocated.
+hardcode_direct_absolute=$hardcode_direct_absolute
+
+# Set to "yes" if using the -LDIR flag during linking hardcodes DIR
+# into the resulting binary.
+hardcode_minus_L=$hardcode_minus_L
+
+# Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
+# into the resulting binary.
+hardcode_shlibpath_var=$hardcode_shlibpath_var
+
+# Set to "yes" if building a shared library automatically hardcodes DIR
+# into the library and all subsequent libraries and executables linked
+# against it.
+hardcode_automatic=$hardcode_automatic
+
+# Set to yes if linker adds runtime paths of dependent libraries
+# to runtime path list.
+inherit_rpath=$inherit_rpath
+
+# Whether libtool must link a program against all its dependency libraries.
+link_all_deplibs=$link_all_deplibs
+
+# Fix the shell variable \$srcfile for the compiler.
+fix_srcfile_path=$lt_fix_srcfile_path
+
+# Set to "yes" if exported symbols are required.
+always_export_symbols=$always_export_symbols
+
+# The commands to list exported symbols.
+export_symbols_cmds=$lt_export_symbols_cmds
+
+# Symbols that should not be listed in the preloaded symbols.
+exclude_expsyms=$lt_exclude_expsyms
+
+# Symbols that must always be exported.
+include_expsyms=$lt_include_expsyms
+
+# Commands necessary for linking programs (against libraries) with templates.
+prelink_cmds=$lt_prelink_cmds
+
+# Specify filename containing input files.
+file_list_spec=$lt_file_list_spec
+
+# How to hardcode a shared library path into an executable.
+hardcode_action=$hardcode_action
+
+# ### END LIBTOOL CONFIG
+
+_LT_EOF
+
+ case $host_os in
+ aix3*)
+ cat <<\_LT_EOF >> "$cfgfile"
+# AIX sometimes has problems with the GCC collect2 program. For some
+# reason, if we set the COLLECT_NAMES environment variable, the problems
+# vanish in a puff of smoke.
+if test "X${COLLECT_NAMES+set}" != Xset; then
+ COLLECT_NAMES=
+ export COLLECT_NAMES
+fi
+_LT_EOF
+ ;;
+ esac
+
+
+ltmain="$ac_aux_dir/ltmain.sh"
+
+
+ # We use sed instead of cat because bash on DJGPP gets confused if
+ # if finds mixed CR/LF and LF-only lines. Since sed operates in
+ # text mode, it properly converts lines to CR/LF. This bash problem
+ # is reportedly fixed, but why not run on old versions too?
+ sed '/^# Generated shell functions inserted here/q' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
+
+ case $xsi_shell in
+ yes)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE. If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac
+}
+
+# func_basename file
+func_basename ()
+{
+ func_basename_result="${1##*/}"
+}
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+# dirname: Compute the dirname of FILE. If nonempty,
+# add APPEND to the result, otherwise set result
+# to NONDIR_REPLACEMENT.
+# value returned in "$func_dirname_result"
+# basename: Compute filename of FILE.
+# value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+ case ${1} in
+ */*) func_dirname_result="${1%/*}${2}" ;;
+ * ) func_dirname_result="${3}" ;;
+ esac
+ func_basename_result="${1##*/}"
+}
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+func_stripname ()
+{
+ # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
+ # positional parameters, so assign one to ordinary parameter first.
+ func_stripname_result=${3}
+ func_stripname_result=${func_stripname_result#"${1}"}
+ func_stripname_result=${func_stripname_result%"${2}"}
+}
+
+# func_opt_split
+func_opt_split ()
+{
+ func_opt_split_opt=${1%%=*}
+ func_opt_split_arg=${1#*=}
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+ case ${1} in
+ *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
+ *) func_lo2o_result=${1} ;;
+ esac
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+ func_xform_result=${1%.*}.lo
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+ func_arith_result=$(( $* ))
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+ func_len_result=${#1}
+}
+
+_LT_EOF
+ ;;
+ *) # Bourne compatible functions.
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE. If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+ # Extract subdirectory from the argument.
+ func_dirname_result=`$ECHO "X${1}" | $Xsed -e "$dirname"`
+ if test "X$func_dirname_result" = "X${1}"; then
+ func_dirname_result="${3}"
+ else
+ func_dirname_result="$func_dirname_result${2}"
+ fi
+}
+
+# func_basename file
+func_basename ()
+{
+ func_basename_result=`$ECHO "X${1}" | $Xsed -e "$basename"`
+}
+
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+# func_strip_suffix prefix name
+func_stripname ()
+{
+ case ${2} in
+ .*) func_stripname_result=`$ECHO "X${3}" \
+ | $Xsed -e "s%^${1}%%" -e "s%\\\\${2}\$%%"`;;
+ *) func_stripname_result=`$ECHO "X${3}" \
+ | $Xsed -e "s%^${1}%%" -e "s%${2}\$%%"`;;
+ esac
+}
+
+# sed scripts:
+my_sed_long_opt='1s/^\(-[^=]*\)=.*/\1/;q'
+my_sed_long_arg='1s/^-[^=]*=//'
+
+# func_opt_split
+func_opt_split ()
+{
+ func_opt_split_opt=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_opt"`
+ func_opt_split_arg=`$ECHO "X${1}" | $Xsed -e "$my_sed_long_arg"`
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+ func_lo2o_result=`$ECHO "X${1}" | $Xsed -e "$lo2o"`
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+ func_xform_result=`$ECHO "X${1}" | $Xsed -e 's/\.[^.]*$/.lo/'`
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+ func_arith_result=`expr "$@"`
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+ func_len_result=`expr "$1" : ".*" 2>/dev/null || echo $max_cmd_len`
+}
+
+_LT_EOF
+esac
+
+case $lt_shell_append in
+ yes)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+ eval "$1+=\$2"
+}
+_LT_EOF
+ ;;
+ *)
+ cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+ eval "$1=\$$1\$2"
+}
+
+_LT_EOF
+ ;;
+ esac
+
+
+ sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \
+ || (rm -f "$cfgfile"; exit 1)
+
+ mv -f "$cfgfile" "$ofile" ||
+ (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
+ chmod +x "$ofile"
+
+ ;;
+
+ esac
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+ as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded. So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status. When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+ ac_cs_success=:
+ ac_config_status_args=
+ test "$silent" = yes &&
+ ac_config_status_args="$ac_config_status_args --quiet"
+ exec 5>/dev/null
+ $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+ exec 5>>config.log
+ # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+ # would make configure fail if this is the last instruction.
+ $ac_cs_success || as_fn_exit 1
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+fi
+
--- /dev/null
+AC_INIT
+AC_CONFIG_SRCDIR([ev_epoll.c])
+
+AM_INIT_AUTOMAKE(libev,4.04) dnl also update ev.h!
+AC_CONFIG_HEADERS([config.h])
+AM_MAINTAINER_MODE
+
+AC_PROG_INSTALL
+AC_PROG_LIBTOOL
+
+if test "x$GCC" = xyes ; then
+ CFLAGS="-O3 $CFLAGS"
+fi
+
+m4_include([libev.m4])
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
--- /dev/null
+#! /bin/sh
+# depcomp - compile a program generating dependencies as side-effects
+
+scriptversion=2009-04-28.21; # UTC
+
+# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 Free
+# Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
+
+case $1 in
+ '')
+ echo "$0: No command. Try \`$0 --help' for more information." 1>&2
+ exit 1;
+ ;;
+ -h | --h*)
+ cat <<\EOF
+Usage: depcomp [--help] [--version] PROGRAM [ARGS]
+
+Run PROGRAMS ARGS to compile a file, generating dependencies
+as side-effects.
+
+Environment variables:
+ depmode Dependency tracking mode.
+ source Source file read by `PROGRAMS ARGS'.
+ object Object file output by `PROGRAMS ARGS'.
+ DEPDIR directory where to store dependencies.
+ depfile Dependency file to output.
+ tmpdepfile Temporary file to use when outputing dependencies.
+ libtool Whether libtool is used (yes/no).
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+ exit $?
+ ;;
+ -v | --v*)
+ echo "depcomp $scriptversion"
+ exit $?
+ ;;
+esac
+
+if test -z "$depmode" || test -z "$source" || test -z "$object"; then
+ echo "depcomp: Variables source, object and depmode must be set" 1>&2
+ exit 1
+fi
+
+# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" |
+ sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
+tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
+
+rm -f "$tmpdepfile"
+
+# Some modes work just like other modes, but use different flags. We
+# parameterize here, but still list the modes in the big case below,
+# to make depend.m4 easier to write. Note that we *cannot* use a case
+# here, because this file can only contain one case statement.
+if test "$depmode" = hp; then
+ # HP compiler uses -M and no extra arg.
+ gccflag=-M
+ depmode=gcc
+fi
+
+if test "$depmode" = dashXmstdout; then
+ # This is just like dashmstdout with a different argument.
+ dashmflag=-xM
+ depmode=dashmstdout
+fi
+
+cygpath_u="cygpath -u -f -"
+if test "$depmode" = msvcmsys; then
+ # This is just like msvisualcpp but w/o cygpath translation.
+ # Just convert the backslash-escaped backslashes to single forward
+ # slashes to satisfy depend.m4
+ cygpath_u="sed s,\\\\\\\\,/,g"
+ depmode=msvisualcpp
+fi
+
+case "$depmode" in
+gcc3)
+## gcc 3 implements dependency tracking that does exactly what
+## we want. Yay! Note: for some reason libtool 1.4 doesn't like
+## it if -MD -MP comes after the -MF stuff. Hmm.
+## Unfortunately, FreeBSD c89 acceptance of flags depends upon
+## the command line argument order; so add the flags where they
+## appear in depend2.am. Note that the slowdown incurred here
+## affects only configure: in makefiles, %FASTDEP% shortcuts this.
+ for arg
+ do
+ case $arg in
+ -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
+ *) set fnord "$@" "$arg" ;;
+ esac
+ shift # fnord
+ shift # $arg
+ done
+ "$@"
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ mv "$tmpdepfile" "$depfile"
+ ;;
+
+gcc)
+## There are various ways to get dependency output from gcc. Here's
+## why we pick this rather obscure method:
+## - Don't want to use -MD because we'd like the dependencies to end
+## up in a subdir. Having to rename by hand is ugly.
+## (We might end up doing this anyway to support other compilers.)
+## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
+## -MM, not -M (despite what the docs say).
+## - Using -M directly means running the compiler twice (even worse
+## than renaming).
+ if test -z "$gccflag"; then
+ gccflag=-MD,
+ fi
+ "$@" -Wp,"$gccflag$tmpdepfile"
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ rm -f "$depfile"
+ echo "$object : \\" > "$depfile"
+ alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
+## The second -e expression handles DOS-style file names with drive letters.
+ sed -e 's/^[^:]*: / /' \
+ -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
+## This next piece of magic avoids the `deleted header file' problem.
+## The problem is that when a header file which appears in a .P file
+## is deleted, the dependency causes make to die (because there is
+## typically no way to rebuild the header). We avoid this by adding
+## dummy dependencies for each header file. Too bad gcc doesn't do
+## this for us directly.
+ tr ' ' '
+' < "$tmpdepfile" |
+## Some versions of gcc put a space before the `:'. On the theory
+## that the space means something, we add a space to the output as
+## well.
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly. Breaking it into two sed invocations is a workaround.
+ sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+hp)
+ # This case exists only to let depend.m4 do its work. It works by
+ # looking at the text of this script. This case will never be run,
+ # since it is checked for above.
+ exit 1
+ ;;
+
+sgi)
+ if test "$libtool" = yes; then
+ "$@" "-Wp,-MDupdate,$tmpdepfile"
+ else
+ "$@" -MDupdate "$tmpdepfile"
+ fi
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ rm -f "$depfile"
+
+ if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
+ echo "$object : \\" > "$depfile"
+
+ # Clip off the initial element (the dependent). Don't try to be
+ # clever and replace this with sed code, as IRIX sed won't handle
+ # lines with more than a fixed number of characters (4096 in
+ # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
+ # the IRIX cc adds comments like `#:fec' to the end of the
+ # dependency line.
+ tr ' ' '
+' < "$tmpdepfile" \
+ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
+ tr '
+' ' ' >> "$depfile"
+ echo >> "$depfile"
+
+ # The second pass generates a dummy entry for each header file.
+ tr ' ' '
+' < "$tmpdepfile" \
+ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+ >> "$depfile"
+ else
+ # The sourcefile does not contain any dependencies, so just
+ # store a dummy comment line, to avoid errors with the Makefile
+ # "include basename.Plo" scheme.
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile"
+ ;;
+
+aix)
+ # The C for AIX Compiler uses -M and outputs the dependencies
+ # in a .u file. In older versions, this file always lives in the
+ # current directory. Also, the AIX compiler puts `$object:' at the
+ # start of each line; $object doesn't have directory information.
+ # Version 6 uses the directory in both cases.
+ dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+ test "x$dir" = "x$object" && dir=
+ base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+ if test "$libtool" = yes; then
+ tmpdepfile1=$dir$base.u
+ tmpdepfile2=$base.u
+ tmpdepfile3=$dir.libs/$base.u
+ "$@" -Wc,-M
+ else
+ tmpdepfile1=$dir$base.u
+ tmpdepfile2=$dir$base.u
+ tmpdepfile3=$dir$base.u
+ "$@" -M
+ fi
+ stat=$?
+
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+ exit $stat
+ fi
+
+ for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+ do
+ test -f "$tmpdepfile" && break
+ done
+ if test -f "$tmpdepfile"; then
+ # Each line is of the form `foo.o: dependent.h'.
+ # Do two passes, one to just change these to
+ # `$object: dependent.h' and one to simply `dependent.h:'.
+ sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
+ # That's a tab and a space in the [].
+ sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+ else
+ # The sourcefile does not contain any dependencies, so just
+ # store a dummy comment line, to avoid errors with the Makefile
+ # "include basename.Plo" scheme.
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile"
+ ;;
+
+icc)
+ # Intel's C compiler understands `-MD -MF file'. However on
+ # icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
+ # ICC 7.0 will fill foo.d with something like
+ # foo.o: sub/foo.c
+ # foo.o: sub/foo.h
+ # which is wrong. We want:
+ # sub/foo.o: sub/foo.c
+ # sub/foo.o: sub/foo.h
+ # sub/foo.c:
+ # sub/foo.h:
+ # ICC 7.1 will output
+ # foo.o: sub/foo.c sub/foo.h
+ # and will wrap long lines using \ :
+ # foo.o: sub/foo.c ... \
+ # sub/foo.h ... \
+ # ...
+
+ "$@" -MD -MF "$tmpdepfile"
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile"
+ exit $stat
+ fi
+ rm -f "$depfile"
+ # Each line is of the form `foo.o: dependent.h',
+ # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+ # Do two passes, one to just change these to
+ # `$object: dependent.h' and one to simply `dependent.h:'.
+ sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
+ # Some versions of the HPUX 10.20 sed can't process this invocation
+ # correctly. Breaking it into two sed invocations is a workaround.
+ sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
+ sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+hp2)
+ # The "hp" stanza above does not work with aCC (C++) and HP's ia64
+ # compilers, which have integrated preprocessors. The correct option
+ # to use with these is +Maked; it writes dependencies to a file named
+ # 'foo.d', which lands next to the object file, wherever that
+ # happens to be.
+ # Much of this is similar to the tru64 case; see comments there.
+ dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+ test "x$dir" = "x$object" && dir=
+ base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+ if test "$libtool" = yes; then
+ tmpdepfile1=$dir$base.d
+ tmpdepfile2=$dir.libs/$base.d
+ "$@" -Wc,+Maked
+ else
+ tmpdepfile1=$dir$base.d
+ tmpdepfile2=$dir$base.d
+ "$@" +Maked
+ fi
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile1" "$tmpdepfile2"
+ exit $stat
+ fi
+
+ for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
+ do
+ test -f "$tmpdepfile" && break
+ done
+ if test -f "$tmpdepfile"; then
+ sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
+ # Add `dependent.h:' lines.
+ sed -ne '2,${
+ s/^ *//
+ s/ \\*$//
+ s/$/:/
+ p
+ }' "$tmpdepfile" >> "$depfile"
+ else
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile" "$tmpdepfile2"
+ ;;
+
+tru64)
+ # The Tru64 compiler uses -MD to generate dependencies as a side
+ # effect. `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
+ # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+ # dependencies in `foo.d' instead, so we check for that too.
+ # Subdirectories are respected.
+ dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+ test "x$dir" = "x$object" && dir=
+ base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+
+ if test "$libtool" = yes; then
+ # With Tru64 cc, shared objects can also be used to make a
+ # static library. This mechanism is used in libtool 1.4 series to
+ # handle both shared and static libraries in a single compilation.
+ # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
+ #
+ # With libtool 1.5 this exception was removed, and libtool now
+ # generates 2 separate objects for the 2 libraries. These two
+ # compilations output dependencies in $dir.libs/$base.o.d and
+ # in $dir$base.o.d. We have to check for both files, because
+ # one of the two compilations can be disabled. We should prefer
+ # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
+ # automatically cleaned when .libs/ is deleted, while ignoring
+ # the former would cause a distcleancheck panic.
+ tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
+ tmpdepfile2=$dir$base.o.d # libtool 1.5
+ tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
+ tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
+ "$@" -Wc,-MD
+ else
+ tmpdepfile1=$dir$base.o.d
+ tmpdepfile2=$dir$base.d
+ tmpdepfile3=$dir$base.d
+ tmpdepfile4=$dir$base.d
+ "$@" -MD
+ fi
+
+ stat=$?
+ if test $stat -eq 0; then :
+ else
+ rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
+ exit $stat
+ fi
+
+ for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
+ do
+ test -f "$tmpdepfile" && break
+ done
+ if test -f "$tmpdepfile"; then
+ sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
+ # That's a tab and a space in the [].
+ sed -e 's,^.*\.[a-z]*:[ ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+ else
+ echo "#dummy" > "$depfile"
+ fi
+ rm -f "$tmpdepfile"
+ ;;
+
+#nosideeffect)
+ # This comment above is used by automake to tell side-effect
+ # dependency tracking mechanisms from slower ones.
+
+dashmstdout)
+ # Important note: in order to support this mode, a compiler *must*
+ # always write the preprocessed file to stdout, regardless of -o.
+ "$@" || exit $?
+
+ # Remove the call to Libtool.
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+
+ # Remove `-o $object'.
+ IFS=" "
+ for arg
+ do
+ case $arg in
+ -o)
+ shift
+ ;;
+ $object)
+ shift
+ ;;
+ *)
+ set fnord "$@" "$arg"
+ shift # fnord
+ shift # $arg
+ ;;
+ esac
+ done
+
+ test -z "$dashmflag" && dashmflag=-M
+ # Require at least two characters before searching for `:'
+ # in the target name. This is to cope with DOS-style filenames:
+ # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
+ "$@" $dashmflag |
+ sed 's:^[ ]*[^: ][^:][^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
+ rm -f "$depfile"
+ cat < "$tmpdepfile" > "$depfile"
+ tr ' ' '
+' < "$tmpdepfile" | \
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly. Breaking it into two sed invocations is a workaround.
+ sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+dashXmstdout)
+ # This case only exists to satisfy depend.m4. It is never actually
+ # run, as this mode is specially recognized in the preamble.
+ exit 1
+ ;;
+
+makedepend)
+ "$@" || exit $?
+ # Remove any Libtool call
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+ # X makedepend
+ shift
+ cleared=no eat=no
+ for arg
+ do
+ case $cleared in
+ no)
+ set ""; shift
+ cleared=yes ;;
+ esac
+ if test $eat = yes; then
+ eat=no
+ continue
+ fi
+ case "$arg" in
+ -D*|-I*)
+ set fnord "$@" "$arg"; shift ;;
+ # Strip any option that makedepend may not understand. Remove
+ # the object too, otherwise makedepend will parse it as a source file.
+ -arch)
+ eat=yes ;;
+ -*|$object)
+ ;;
+ *)
+ set fnord "$@" "$arg"; shift ;;
+ esac
+ done
+ obj_suffix=`echo "$object" | sed 's/^.*\././'`
+ touch "$tmpdepfile"
+ ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
+ rm -f "$depfile"
+ cat < "$tmpdepfile" > "$depfile"
+ sed '1,2d' "$tmpdepfile" | tr ' ' '
+' | \
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly. Breaking it into two sed invocations is a workaround.
+ sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile" "$tmpdepfile".bak
+ ;;
+
+cpp)
+ # Important note: in order to support this mode, a compiler *must*
+ # always write the preprocessed file to stdout.
+ "$@" || exit $?
+
+ # Remove the call to Libtool.
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+
+ # Remove `-o $object'.
+ IFS=" "
+ for arg
+ do
+ case $arg in
+ -o)
+ shift
+ ;;
+ $object)
+ shift
+ ;;
+ *)
+ set fnord "$@" "$arg"
+ shift # fnord
+ shift # $arg
+ ;;
+ esac
+ done
+
+ "$@" -E |
+ sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+ -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
+ sed '$ s: \\$::' > "$tmpdepfile"
+ rm -f "$depfile"
+ echo "$object : \\" > "$depfile"
+ cat < "$tmpdepfile" >> "$depfile"
+ sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+msvisualcpp)
+ # Important note: in order to support this mode, a compiler *must*
+ # always write the preprocessed file to stdout.
+ "$@" || exit $?
+
+ # Remove the call to Libtool.
+ if test "$libtool" = yes; then
+ while test "X$1" != 'X--mode=compile'; do
+ shift
+ done
+ shift
+ fi
+
+ IFS=" "
+ for arg
+ do
+ case "$arg" in
+ -o)
+ shift
+ ;;
+ $object)
+ shift
+ ;;
+ "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
+ set fnord "$@"
+ shift
+ shift
+ ;;
+ *)
+ set fnord "$@" "$arg"
+ shift
+ shift
+ ;;
+ esac
+ done
+ "$@" -E 2>/dev/null |
+ sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
+ rm -f "$depfile"
+ echo "$object : \\" > "$depfile"
+ sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s:: \1 \\:p' >> "$depfile"
+ echo " " >> "$depfile"
+ sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+ rm -f "$tmpdepfile"
+ ;;
+
+msvcmsys)
+ # This case exists only to let depend.m4 do its work. It works by
+ # looking at the text of this script. This case will never be run,
+ # since it is checked for above.
+ exit 1
+ ;;
+
+none)
+ exec "$@"
+ ;;
+
+*)
+ echo "Unknown depmode $depmode" 1>&2
+ exit 1
+ ;;
+esac
+
+exit 0
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
--- /dev/null
+/*
+ * libev simple C++ wrapper classes
+ *
+ * Copyright (c) 2007,2008,2010 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#ifndef EVPP_H__
+#define EVPP_H__
+
+#ifdef EV_H
+# include EV_H
+#else
+# include "ev.h"
+#endif
+
+#ifndef EV_USE_STDEXCEPT
+# define EV_USE_STDEXCEPT 1
+#endif
+
+#if EV_USE_STDEXCEPT
+# include <stdexcept>
+#endif
+
+namespace ev {
+
+ typedef ev_tstamp tstamp;
+
+ enum {
+ UNDEF = EV_UNDEF,
+ NONE = EV_NONE,
+ READ = EV_READ,
+ WRITE = EV_WRITE,
+#if EV_COMPAT3
+ TIMEOUT = EV_TIMEOUT,
+#endif
+ TIMER = EV_TIMER,
+ PERIODIC = EV_PERIODIC,
+ SIGNAL = EV_SIGNAL,
+ CHILD = EV_CHILD,
+ STAT = EV_STAT,
+ IDLE = EV_IDLE,
+ CHECK = EV_CHECK,
+ PREPARE = EV_PREPARE,
+ FORK = EV_FORK,
+ ASYNC = EV_ASYNC,
+ EMBED = EV_EMBED,
+# undef ERROR // some systems stupidly #define ERROR
+ ERROR = EV_ERROR
+ };
+
+ enum
+ {
+ AUTO = EVFLAG_AUTO,
+ NOENV = EVFLAG_NOENV,
+ FORKCHECK = EVFLAG_FORKCHECK,
+
+ SELECT = EVBACKEND_SELECT,
+ POLL = EVBACKEND_POLL,
+ EPOLL = EVBACKEND_EPOLL,
+ KQUEUE = EVBACKEND_KQUEUE,
+ DEVPOLL = EVBACKEND_DEVPOLL,
+ PORT = EVBACKEND_PORT
+ };
+
+ enum
+ {
+#if EV_COMPAT3
+ NONBLOCK = EVLOOP_NONBLOCK,
+ ONESHOT = EVLOOP_ONESHOT,
+#endif
+ NOWAIT = EVRUN_NOWAIT,
+ ONCE = EVRUN_ONCE
+ };
+
+ enum how_t
+ {
+ ONE = EVBREAK_ONE,
+ ALL = EVBREAK_ALL
+ };
+
+ struct bad_loop
+#if EV_USE_STDEXCEPT
+ : std::runtime_error
+#endif
+ {
+#if EV_USE_STDEXCEPT
+ bad_loop ()
+ : std::runtime_error ("libev event loop cannot be initialized, bad value of LIBEV_FLAGS?")
+ {
+ }
+#endif
+ };
+
+#ifdef EV_AX
+# undef EV_AX
+#endif
+
+#ifdef EV_AX_
+# undef EV_AX_
+#endif
+
+#if EV_MULTIPLICITY
+# define EV_AX raw_loop
+# define EV_AX_ raw_loop,
+#else
+# define EV_AX
+# define EV_AX_
+#endif
+
+ struct loop_ref
+ {
+ loop_ref (EV_P) throw ()
+#if EV_MULTIPLICITY
+ : EV_AX (EV_A)
+#endif
+ {
+ }
+
+ bool operator == (const loop_ref &other) const throw ()
+ {
+#if EV_MULTIPLICITY
+ return EV_AX == other.EV_AX;
+#else
+ return true;
+#endif
+ }
+
+ bool operator != (const loop_ref &other) const throw ()
+ {
+#if EV_MULTIPLICITY
+ return ! (*this == other);
+#else
+ return false;
+#endif
+ }
+
+#if EV_MULTIPLICITY
+ bool operator == (const EV_P) const throw ()
+ {
+ return this->EV_AX == EV_A;
+ }
+
+ bool operator != (const EV_P) const throw ()
+ {
+ return (*this == EV_A);
+ }
+
+ operator struct ev_loop * () const throw ()
+ {
+ return EV_AX;
+ }
+
+ operator const struct ev_loop * () const throw ()
+ {
+ return EV_AX;
+ }
+
+ bool is_default () const throw ()
+ {
+ return EV_AX == ev_default_loop (0);
+ }
+#endif
+
+#if EV_COMPAT3
+ void loop (int flags = 0)
+ {
+ ev_run (EV_AX_ flags);
+ }
+
+ void unloop (how_t how = ONE) throw ()
+ {
+ ev_break (EV_AX_ how);
+ }
+#endif
+
+ void run (int flags = 0)
+ {
+ ev_run (EV_AX_ flags);
+ }
+
+ void break_loop (how_t how = ONE) throw ()
+ {
+ ev_break (EV_AX_ how);
+ }
+
+ void post_fork () throw ()
+ {
+ ev_loop_fork (EV_AX);
+ }
+
+ unsigned int backend () const throw ()
+ {
+ return ev_backend (EV_AX);
+ }
+
+ tstamp now () const throw ()
+ {
+ return ev_now (EV_AX);
+ }
+
+ void ref () throw ()
+ {
+ ev_ref (EV_AX);
+ }
+
+ void unref () throw ()
+ {
+ ev_unref (EV_AX);
+ }
+
+#if EV_FEATURE_API
+ unsigned int iteration () const throw ()
+ {
+ return ev_iteration (EV_AX);
+ }
+
+ unsigned int depth () const throw ()
+ {
+ return ev_depth (EV_AX);
+ }
+
+ void set_io_collect_interval (tstamp interval) throw ()
+ {
+ ev_set_io_collect_interval (EV_AX_ interval);
+ }
+
+ void set_timeout_collect_interval (tstamp interval) throw ()
+ {
+ ev_set_timeout_collect_interval (EV_AX_ interval);
+ }
+#endif
+
+ // function callback
+ void once (int fd, int events, tstamp timeout, void (*cb)(int, void *), void *arg = 0) throw ()
+ {
+ ev_once (EV_AX_ fd, events, timeout, cb, arg);
+ }
+
+ // method callback
+ template<class K, void (K::*method)(int)>
+ void once (int fd, int events, tstamp timeout, K *object) throw ()
+ {
+ once (fd, events, timeout, method_thunk<K, method>, object);
+ }
+
+ // default method == operator ()
+ template<class K>
+ void once (int fd, int events, tstamp timeout, K *object) throw ()
+ {
+ once (fd, events, timeout, method_thunk<K, &K::operator ()>, object);
+ }
+
+ template<class K, void (K::*method)(int)>
+ static void method_thunk (int revents, void *arg)
+ {
+ static_cast<K *>(arg)->*method
+ (revents);
+ }
+
+ // no-argument method callback
+ template<class K, void (K::*method)()>
+ void once (int fd, int events, tstamp timeout, K *object) throw ()
+ {
+ once (fd, events, timeout, method_noargs_thunk<K, method>, object);
+ }
+
+ template<class K, void (K::*method)()>
+ static void method_noargs_thunk (int revents, void *arg)
+ {
+ static_cast<K *>(arg)->*method
+ ();
+ }
+
+ // simpler function callback
+ template<void (*cb)(int)>
+ void once (int fd, int events, tstamp timeout) throw ()
+ {
+ once (fd, events, timeout, simpler_func_thunk<cb>);
+ }
+
+ template<void (*cb)(int)>
+ static void simpler_func_thunk (int revents, void *arg)
+ {
+ (*cb)
+ (revents);
+ }
+
+ // simplest function callback
+ template<void (*cb)()>
+ void once (int fd, int events, tstamp timeout) throw ()
+ {
+ once (fd, events, timeout, simplest_func_thunk<cb>);
+ }
+
+ template<void (*cb)()>
+ static void simplest_func_thunk (int revents, void *arg)
+ {
+ (*cb)
+ ();
+ }
+
+ void feed_fd_event (int fd, int revents) throw ()
+ {
+ ev_feed_fd_event (EV_AX_ fd, revents);
+ }
+
+ void feed_signal_event (int signum) throw ()
+ {
+ ev_feed_signal_event (EV_AX_ signum);
+ }
+
+#if EV_MULTIPLICITY
+ struct ev_loop* EV_AX;
+#endif
+
+ };
+
+#if EV_MULTIPLICITY
+ struct dynamic_loop : loop_ref
+ {
+
+ dynamic_loop (unsigned int flags = AUTO) throw (bad_loop)
+ : loop_ref (ev_loop_new (flags))
+ {
+ if (!EV_AX)
+ throw bad_loop ();
+ }
+
+ ~dynamic_loop () throw ()
+ {
+ ev_loop_destroy (EV_AX);
+ EV_AX = 0;
+ }
+
+ private:
+
+ dynamic_loop (const dynamic_loop &);
+
+ dynamic_loop & operator= (const dynamic_loop &);
+
+ };
+#endif
+
+ struct default_loop : loop_ref
+ {
+ default_loop (unsigned int flags = AUTO) throw (bad_loop)
+#if EV_MULTIPLICITY
+ : loop_ref (ev_default_loop (flags))
+#endif
+ {
+ if (
+#if EV_MULTIPLICITY
+ !EV_AX
+#else
+ !ev_default_loop (flags)
+#endif
+ )
+ throw bad_loop ();
+ }
+
+ private:
+ default_loop (const default_loop &);
+ default_loop &operator = (const default_loop &);
+ };
+
+ inline loop_ref get_default_loop () throw ()
+ {
+#if EV_MULTIPLICITY
+ return ev_default_loop (0);
+#else
+ return loop_ref ();
+#endif
+ }
+
+#undef EV_AX
+#undef EV_AX_
+
+#undef EV_PX
+#undef EV_PX_
+#if EV_MULTIPLICITY
+# define EV_PX loop_ref EV_A
+# define EV_PX_ loop_ref EV_A_
+#else
+# define EV_PX
+# define EV_PX_
+#endif
+
+ template<class ev_watcher, class watcher>
+ struct base : ev_watcher
+ {
+ #if EV_MULTIPLICITY
+ EV_PX;
+
+ // loop set
+ void set (EV_P) throw ()
+ {
+ this->EV_A = EV_A;
+ }
+ #endif
+
+ base (EV_PX) throw ()
+ #if EV_MULTIPLICITY
+ : EV_A (EV_A)
+ #endif
+ {
+ ev_init (this, 0);
+ }
+
+ void set_ (const void *data, void (*cb)(EV_P_ ev_watcher *w, int revents)) throw ()
+ {
+ this->data = (void *)data;
+ ev_set_cb (static_cast<ev_watcher *>(this), cb);
+ }
+
+ // function callback
+ template<void (*function)(watcher &w, int)>
+ void set (void *data = 0) throw ()
+ {
+ set_ (data, function_thunk<function>);
+ }
+
+ template<void (*function)(watcher &w, int)>
+ static void function_thunk (EV_P_ ev_watcher *w, int revents)
+ {
+ function
+ (*static_cast<watcher *>(w), revents);
+ }
+
+ // method callback
+ template<class K, void (K::*method)(watcher &w, int)>
+ void set (K *object) throw ()
+ {
+ set_ (object, method_thunk<K, method>);
+ }
+
+ // default method == operator ()
+ template<class K>
+ void set (K *object) throw ()
+ {
+ set_ (object, method_thunk<K, &K::operator ()>);
+ }
+
+ template<class K, void (K::*method)(watcher &w, int)>
+ static void method_thunk (EV_P_ ev_watcher *w, int revents)
+ {
+ (static_cast<K *>(w->data)->*method)
+ (*static_cast<watcher *>(w), revents);
+ }
+
+ // no-argument callback
+ template<class K, void (K::*method)()>
+ void set (K *object) throw ()
+ {
+ set_ (object, method_noargs_thunk<K, method>);
+ }
+
+ template<class K, void (K::*method)()>
+ static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
+ {
+ (static_cast<K *>(w->data)->*method)
+ ();
+ }
+
+ void operator ()(int events = EV_UNDEF)
+ {
+ return
+ ev_cb (static_cast<ev_watcher *>(this))
+ (static_cast<ev_watcher *>(this), events);
+ }
+
+ bool is_active () const throw ()
+ {
+ return ev_is_active (static_cast<const ev_watcher *>(this));
+ }
+
+ bool is_pending () const throw ()
+ {
+ return ev_is_pending (static_cast<const ev_watcher *>(this));
+ }
+
+ void feed_event (int revents) throw ()
+ {
+ ev_feed_event (EV_A_ static_cast<const ev_watcher *>(this), revents);
+ }
+ };
+
+ inline tstamp now () throw ()
+ {
+ return ev_time ();
+ }
+
+ inline void delay (tstamp interval) throw ()
+ {
+ ev_sleep (interval);
+ }
+
+ inline int version_major () throw ()
+ {
+ return ev_version_major ();
+ }
+
+ inline int version_minor () throw ()
+ {
+ return ev_version_minor ();
+ }
+
+ inline unsigned int supported_backends () throw ()
+ {
+ return ev_supported_backends ();
+ }
+
+ inline unsigned int recommended_backends () throw ()
+ {
+ return ev_recommended_backends ();
+ }
+
+ inline unsigned int embeddable_backends () throw ()
+ {
+ return ev_embeddable_backends ();
+ }
+
+ inline void set_allocator (void *(*cb)(void *ptr, long size)) throw ()
+ {
+ ev_set_allocator (cb);
+ }
+
+ inline void set_syserr_cb (void (*cb)(const char *msg)) throw ()
+ {
+ ev_set_syserr_cb (cb);
+ }
+
+ #if EV_MULTIPLICITY
+ #define EV_CONSTRUCT(cppstem,cstem) \
+ (EV_PX = get_default_loop ()) throw () \
+ : base<ev_ ## cstem, cppstem> (EV_A) \
+ { \
+ }
+ #else
+ #define EV_CONSTRUCT(cppstem,cstem) \
+ () throw () \
+ { \
+ }
+ #endif
+
+ /* using a template here would require quite a bit more lines,
+ * so a macro solution was chosen */
+ #define EV_BEGIN_WATCHER(cppstem,cstem) \
+ \
+ struct cppstem : base<ev_ ## cstem, cppstem> \
+ { \
+ void start () throw () \
+ { \
+ ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
+ } \
+ \
+ void stop () throw () \
+ { \
+ ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
+ } \
+ \
+ cppstem EV_CONSTRUCT(cppstem,cstem) \
+ \
+ ~cppstem () throw () \
+ { \
+ stop (); \
+ } \
+ \
+ using base<ev_ ## cstem, cppstem>::set; \
+ \
+ private: \
+ \
+ cppstem (const cppstem &o); \
+ \
+ cppstem &operator =(const cppstem &o); \
+ \
+ public:
+
+ #define EV_END_WATCHER(cppstem,cstem) \
+ };
+
+ EV_BEGIN_WATCHER (io, io)
+ void set (int fd, int events) throw ()
+ {
+ int active = is_active ();
+ if (active) stop ();
+ ev_io_set (static_cast<ev_io *>(this), fd, events);
+ if (active) start ();
+ }
+
+ void set (int events) throw ()
+ {
+ int active = is_active ();
+ if (active) stop ();
+ ev_io_set (static_cast<ev_io *>(this), fd, events);
+ if (active) start ();
+ }
+
+ void start (int fd, int events) throw ()
+ {
+ set (fd, events);
+ start ();
+ }
+ EV_END_WATCHER (io, io)
+
+ EV_BEGIN_WATCHER (timer, timer)
+ void set (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
+ {
+ int active = is_active ();
+ if (active) stop ();
+ ev_timer_set (static_cast<ev_timer *>(this), after, repeat);
+ if (active) start ();
+ }
+
+ void start (ev_tstamp after, ev_tstamp repeat = 0.) throw ()
+ {
+ set (after, repeat);
+ start ();
+ }
+
+ void again () throw ()
+ {
+ ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
+ }
+
+ ev_tstamp remaining ()
+ {
+ return ev_timer_remaining (EV_A_ static_cast<ev_timer *>(this));
+ }
+ EV_END_WATCHER (timer, timer)
+
+ #if EV_PERIODIC_ENABLE
+ EV_BEGIN_WATCHER (periodic, periodic)
+ void set (ev_tstamp at, ev_tstamp interval = 0.) throw ()
+ {
+ int active = is_active ();
+ if (active) stop ();
+ ev_periodic_set (static_cast<ev_periodic *>(this), at, interval, 0);
+ if (active) start ();
+ }
+
+ void start (ev_tstamp at, ev_tstamp interval = 0.) throw ()
+ {
+ set (at, interval);
+ start ();
+ }
+
+ void again () throw ()
+ {
+ ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
+ }
+ EV_END_WATCHER (periodic, periodic)
+ #endif
+
+ #if EV_SIGNAL_ENABLE
+ EV_BEGIN_WATCHER (sig, signal)
+ void set (int signum) throw ()
+ {
+ int active = is_active ();
+ if (active) stop ();
+ ev_signal_set (static_cast<ev_signal *>(this), signum);
+ if (active) start ();
+ }
+
+ void start (int signum) throw ()
+ {
+ set (signum);
+ start ();
+ }
+ EV_END_WATCHER (sig, signal)
+ #endif
+
+ #if EV_CHILD_ENABLE
+ EV_BEGIN_WATCHER (child, child)
+ void set (int pid, int trace = 0) throw ()
+ {
+ int active = is_active ();
+ if (active) stop ();
+ ev_child_set (static_cast<ev_child *>(this), pid, trace);
+ if (active) start ();
+ }
+
+ void start (int pid, int trace = 0) throw ()
+ {
+ set (pid, trace);
+ start ();
+ }
+ EV_END_WATCHER (child, child)
+ #endif
+
+ #if EV_STAT_ENABLE
+ EV_BEGIN_WATCHER (stat, stat)
+ void set (const char *path, ev_tstamp interval = 0.) throw ()
+ {
+ int active = is_active ();
+ if (active) stop ();
+ ev_stat_set (static_cast<ev_stat *>(this), path, interval);
+ if (active) start ();
+ }
+
+ void start (const char *path, ev_tstamp interval = 0.) throw ()
+ {
+ stop ();
+ set (path, interval);
+ start ();
+ }
+
+ void update () throw ()
+ {
+ ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
+ }
+ EV_END_WATCHER (stat, stat)
+ #endif
+
+ #if EV_IDLE_ENABLE
+ EV_BEGIN_WATCHER (idle, idle)
+ void set () throw () { }
+ EV_END_WATCHER (idle, idle)
+ #endif
+
+ #if EV_PREPARE_ENABLE
+ EV_BEGIN_WATCHER (prepare, prepare)
+ void set () throw () { }
+ EV_END_WATCHER (prepare, prepare)
+ #endif
+
+ #if EV_CHECK_ENABLE
+ EV_BEGIN_WATCHER (check, check)
+ void set () throw () { }
+ EV_END_WATCHER (check, check)
+ #endif
+
+ #if EV_EMBED_ENABLE
+ EV_BEGIN_WATCHER (embed, embed)
+ void set (struct ev_loop *embedded_loop) throw ()
+ {
+ int active = is_active ();
+ if (active) stop ();
+ ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
+ if (active) start ();
+ }
+
+ void start (struct ev_loop *embedded_loop) throw ()
+ {
+ set (embedded_loop);
+ start ();
+ }
+
+ void sweep ()
+ {
+ ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
+ }
+ EV_END_WATCHER (embed, embed)
+ #endif
+
+ #if EV_FORK_ENABLE
+ EV_BEGIN_WATCHER (fork, fork)
+ void set () throw () { }
+ EV_END_WATCHER (fork, fork)
+ #endif
+
+ #if EV_ASYNC_ENABLE
+ EV_BEGIN_WATCHER (async, async)
+ void send () throw ()
+ {
+ ev_async_send (EV_A_ static_cast<ev_async *>(this));
+ }
+
+ bool async_pending () throw ()
+ {
+ return ev_async_pending (static_cast<ev_async *>(this));
+ }
+ EV_END_WATCHER (async, async)
+ #endif
+
+ #undef EV_PX
+ #undef EV_PX_
+ #undef EV_CONSTRUCT
+ #undef EV_BEGIN_WATCHER
+ #undef EV_END_WATCHER
+}
+
+#endif
+
--- /dev/null
+.\" Automatically generated by Pod::Man 2.22 (Pod::Simple 3.07)
+.\"
+.\" Standard preamble:
+.\" ========================================================================
+.de Sp \" Vertical space (when we can't use .PP)
+.if t .sp .5v
+.if n .sp
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+.nf
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+..
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+.fi
+..
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+.\" double quote, and \*(R" will give a right double quote. \*(C+ will
+.\" give a nicer C++. Capital omega is used to do unbreakable dashes and
+.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
+.\" nothing in troff, for use with C<>.
+.tr \(*W-
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+. ds C' ""
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+.el\{\
+. ds -- \|\(em\|
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+. ds R" ''
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+.\"
+.\" Escape single quotes in literal strings from groff's Unicode transform.
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.\"
+.\" If the F register is turned on, we'll generate index entries on stderr for
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+.ie \nF \{\
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+..
+.\}
+.\"
+.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
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+. \" fudge factors for nroff and troff
+.if n \{\
+. ds #H 0
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+. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
+. ds #V .6m
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+. ds #] \&
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+. \" simple accents for nroff and troff
+.if n \{\
+. ds ' \&
+. ds ` \&
+. ds ^ \&
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+. ds /
+.\}
+.if t \{\
+. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
+. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
+. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
+. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
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+. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
+.\}
+. \" troff and (daisy-wheel) nroff accents
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+.ds Ae A\h'-(\w'A'u*4/10)'E
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+.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
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+\{\
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+.rm #[ #] #H #V #F C
+.\" ========================================================================
+.\"
+.IX Title "LIBEV 3"
+.TH LIBEV 3 "2011-02-16" "libev-4.04" "libev - high performance full featured event loop"
+.\" For nroff, turn off justification. Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH "NAME"
+libev \- a high performance full\-featured event loop written in C
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+.Vb 1
+\& #include <ev.h>
+.Ve
+.SS "\s-1EXAMPLE\s0 \s-1PROGRAM\s0"
+.IX Subsection "EXAMPLE PROGRAM"
+.Vb 2
+\& // a single header file is required
+\& #include <ev.h>
+\&
+\& #include <stdio.h> // for puts
+\&
+\& // every watcher type has its own typedef\*(Aqd struct
+\& // with the name ev_TYPE
+\& ev_io stdin_watcher;
+\& ev_timer timeout_watcher;
+\&
+\& // all watcher callbacks have a similar signature
+\& // this callback is called when data is readable on stdin
+\& static void
+\& stdin_cb (EV_P_ ev_io *w, int revents)
+\& {
+\& puts ("stdin ready");
+\& // for one\-shot events, one must manually stop the watcher
+\& // with its corresponding stop function.
+\& ev_io_stop (EV_A_ w);
+\&
+\& // this causes all nested ev_run\*(Aqs to stop iterating
+\& ev_break (EV_A_ EVBREAK_ALL);
+\& }
+\&
+\& // another callback, this time for a time\-out
+\& static void
+\& timeout_cb (EV_P_ ev_timer *w, int revents)
+\& {
+\& puts ("timeout");
+\& // this causes the innermost ev_run to stop iterating
+\& ev_break (EV_A_ EVBREAK_ONE);
+\& }
+\&
+\& int
+\& main (void)
+\& {
+\& // use the default event loop unless you have special needs
+\& struct ev_loop *loop = EV_DEFAULT;
+\&
+\& // initialise an io watcher, then start it
+\& // this one will watch for stdin to become readable
+\& ev_io_init (&stdin_watcher, stdin_cb, /*STDIN_FILENO*/ 0, EV_READ);
+\& ev_io_start (loop, &stdin_watcher);
+\&
+\& // initialise a timer watcher, then start it
+\& // simple non\-repeating 5.5 second timeout
+\& ev_timer_init (&timeout_watcher, timeout_cb, 5.5, 0.);
+\& ev_timer_start (loop, &timeout_watcher);
+\&
+\& // now wait for events to arrive
+\& ev_run (loop, 0);
+\&
+\& // break was called, so exit
+\& return 0;
+\& }
+.Ve
+.SH "ABOUT THIS DOCUMENT"
+.IX Header "ABOUT THIS DOCUMENT"
+This document documents the libev software package.
+.PP
+The newest version of this document is also available as an html-formatted
+web page you might find easier to navigate when reading it for the first
+time: <http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod>.
+.PP
+While this document tries to be as complete as possible in documenting
+libev, its usage and the rationale behind its design, it is not a tutorial
+on event-based programming, nor will it introduce event-based programming
+with libev.
+.PP
+Familiarity with event based programming techniques in general is assumed
+throughout this document.
+.SH "WHAT TO READ WHEN IN A HURRY"
+.IX Header "WHAT TO READ WHEN IN A HURRY"
+This manual tries to be very detailed, but unfortunately, this also makes
+it very long. If you just want to know the basics of libev, I suggest
+reading \*(L"\s-1ANATOMY\s0 \s-1OF\s0 A \s-1WATCHER\s0\*(R", then the \*(L"\s-1EXAMPLE\s0 \s-1PROGRAM\s0\*(R" above and
+look up the missing functions in \*(L"\s-1GLOBAL\s0 \s-1FUNCTIONS\s0\*(R" and the \f(CW\*(C`ev_io\*(C'\fR and
+\&\f(CW\*(C`ev_timer\*(C'\fR sections in \*(L"\s-1WATCHER\s0 \s-1TYPES\s0\*(R".
+.SH "ABOUT LIBEV"
+.IX Header "ABOUT LIBEV"
+Libev is an event loop: you register interest in certain events (such as a
+file descriptor being readable or a timeout occurring), and it will manage
+these event sources and provide your program with events.
+.PP
+To do this, it must take more or less complete control over your process
+(or thread) by executing the \fIevent loop\fR handler, and will then
+communicate events via a callback mechanism.
+.PP
+You register interest in certain events by registering so-called \fIevent
+watchers\fR, which are relatively small C structures you initialise with the
+details of the event, and then hand it over to libev by \fIstarting\fR the
+watcher.
+.SS "\s-1FEATURES\s0"
+.IX Subsection "FEATURES"
+Libev supports \f(CW\*(C`select\*(C'\fR, \f(CW\*(C`poll\*(C'\fR, the Linux-specific \f(CW\*(C`epoll\*(C'\fR, the
+BSD-specific \f(CW\*(C`kqueue\*(C'\fR and the Solaris-specific event port mechanisms
+for file descriptor events (\f(CW\*(C`ev_io\*(C'\fR), the Linux \f(CW\*(C`inotify\*(C'\fR interface
+(for \f(CW\*(C`ev_stat\*(C'\fR), Linux eventfd/signalfd (for faster and cleaner
+inter-thread wakeup (\f(CW\*(C`ev_async\*(C'\fR)/signal handling (\f(CW\*(C`ev_signal\*(C'\fR)) relative
+timers (\f(CW\*(C`ev_timer\*(C'\fR), absolute timers with customised rescheduling
+(\f(CW\*(C`ev_periodic\*(C'\fR), synchronous signals (\f(CW\*(C`ev_signal\*(C'\fR), process status
+change events (\f(CW\*(C`ev_child\*(C'\fR), and event watchers dealing with the event
+loop mechanism itself (\f(CW\*(C`ev_idle\*(C'\fR, \f(CW\*(C`ev_embed\*(C'\fR, \f(CW\*(C`ev_prepare\*(C'\fR and
+\&\f(CW\*(C`ev_check\*(C'\fR watchers) as well as file watchers (\f(CW\*(C`ev_stat\*(C'\fR) and even
+limited support for fork events (\f(CW\*(C`ev_fork\*(C'\fR).
+.PP
+It also is quite fast (see this
+<benchmark> comparing it to libevent
+for example).
+.SS "\s-1CONVENTIONS\s0"
+.IX Subsection "CONVENTIONS"
+Libev is very configurable. In this manual the default (and most common)
+configuration will be described, which supports multiple event loops. For
+more info about various configuration options please have a look at
+\&\fB\s-1EMBED\s0\fR section in this manual. If libev was configured without support
+for multiple event loops, then all functions taking an initial argument of
+name \f(CW\*(C`loop\*(C'\fR (which is always of type \f(CW\*(C`struct ev_loop *\*(C'\fR) will not have
+this argument.
+.SS "\s-1TIME\s0 \s-1REPRESENTATION\s0"
+.IX Subsection "TIME REPRESENTATION"
+Libev represents time as a single floating point number, representing
+the (fractional) number of seconds since the (\s-1POSIX\s0) epoch (in practice
+somewhere near the beginning of 1970, details are complicated, don't
+ask). This type is called \f(CW\*(C`ev_tstamp\*(C'\fR, which is what you should use
+too. It usually aliases to the \f(CW\*(C`double\*(C'\fR type in C. When you need to do
+any calculations on it, you should treat it as some floating point value.
+.PP
+Unlike the name component \f(CW\*(C`stamp\*(C'\fR might indicate, it is also used for
+time differences (e.g. delays) throughout libev.
+.SH "ERROR HANDLING"
+.IX Header "ERROR HANDLING"
+Libev knows three classes of errors: operating system errors, usage errors
+and internal errors (bugs).
+.PP
+When libev catches an operating system error it cannot handle (for example
+a system call indicating a condition libev cannot fix), it calls the callback
+set via \f(CW\*(C`ev_set_syserr_cb\*(C'\fR, which is supposed to fix the problem or
+abort. The default is to print a diagnostic message and to call \f(CW\*(C`abort
+()\*(C'\fR.
+.PP
+When libev detects a usage error such as a negative timer interval, then
+it will print a diagnostic message and abort (via the \f(CW\*(C`assert\*(C'\fR mechanism,
+so \f(CW\*(C`NDEBUG\*(C'\fR will disable this checking): these are programming errors in
+the libev caller and need to be fixed there.
+.PP
+Libev also has a few internal error-checking \f(CW\*(C`assert\*(C'\fRions, and also has
+extensive consistency checking code. These do not trigger under normal
+circumstances, as they indicate either a bug in libev or worse.
+.SH "GLOBAL FUNCTIONS"
+.IX Header "GLOBAL FUNCTIONS"
+These functions can be called anytime, even before initialising the
+library in any way.
+.IP "ev_tstamp ev_time ()" 4
+.IX Item "ev_tstamp ev_time ()"
+Returns the current time as libev would use it. Please note that the
+\&\f(CW\*(C`ev_now\*(C'\fR function is usually faster and also often returns the timestamp
+you actually want to know. Also interesting is the combination of
+\&\f(CW\*(C`ev_update_now\*(C'\fR and \f(CW\*(C`ev_now\*(C'\fR.
+.IP "ev_sleep (ev_tstamp interval)" 4
+.IX Item "ev_sleep (ev_tstamp interval)"
+Sleep for the given interval: The current thread will be blocked until
+either it is interrupted or the given time interval has passed. Basically
+this is a sub-second-resolution \f(CW\*(C`sleep ()\*(C'\fR.
+.IP "int ev_version_major ()" 4
+.IX Item "int ev_version_major ()"
+.PD 0
+.IP "int ev_version_minor ()" 4
+.IX Item "int ev_version_minor ()"
+.PD
+You can find out the major and minor \s-1ABI\s0 version numbers of the library
+you linked against by calling the functions \f(CW\*(C`ev_version_major\*(C'\fR and
+\&\f(CW\*(C`ev_version_minor\*(C'\fR. If you want, you can compare against the global
+symbols \f(CW\*(C`EV_VERSION_MAJOR\*(C'\fR and \f(CW\*(C`EV_VERSION_MINOR\*(C'\fR, which specify the
+version of the library your program was compiled against.
+.Sp
+These version numbers refer to the \s-1ABI\s0 version of the library, not the
+release version.
+.Sp
+Usually, it's a good idea to terminate if the major versions mismatch,
+as this indicates an incompatible change. Minor versions are usually
+compatible to older versions, so a larger minor version alone is usually
+not a problem.
+.Sp
+Example: Make sure we haven't accidentally been linked against the wrong
+version (note, however, that this will not detect other \s-1ABI\s0 mismatches,
+such as \s-1LFS\s0 or reentrancy).
+.Sp
+.Vb 3
+\& assert (("libev version mismatch",
+\& ev_version_major () == EV_VERSION_MAJOR
+\& && ev_version_minor () >= EV_VERSION_MINOR));
+.Ve
+.IP "unsigned int ev_supported_backends ()" 4
+.IX Item "unsigned int ev_supported_backends ()"
+Return the set of all backends (i.e. their corresponding \f(CW\*(C`EV_BACKEND_*\*(C'\fR
+value) compiled into this binary of libev (independent of their
+availability on the system you are running on). See \f(CW\*(C`ev_default_loop\*(C'\fR for
+a description of the set values.
+.Sp
+Example: make sure we have the epoll method, because yeah this is cool and
+a must have and can we have a torrent of it please!!!11
+.Sp
+.Vb 2
+\& assert (("sorry, no epoll, no sex",
+\& ev_supported_backends () & EVBACKEND_EPOLL));
+.Ve
+.IP "unsigned int ev_recommended_backends ()" 4
+.IX Item "unsigned int ev_recommended_backends ()"
+Return the set of all backends compiled into this binary of libev and
+also recommended for this platform, meaning it will work for most file
+descriptor types. This set is often smaller than the one returned by
+\&\f(CW\*(C`ev_supported_backends\*(C'\fR, as for example kqueue is broken on most BSDs
+and will not be auto-detected unless you explicitly request it (assuming
+you know what you are doing). This is the set of backends that libev will
+probe for if you specify no backends explicitly.
+.IP "unsigned int ev_embeddable_backends ()" 4
+.IX Item "unsigned int ev_embeddable_backends ()"
+Returns the set of backends that are embeddable in other event loops. This
+value is platform-specific but can include backends not available on the
+current system. To find which embeddable backends might be supported on
+the current system, you would need to look at \f(CW\*(C`ev_embeddable_backends ()
+& ev_supported_backends ()\*(C'\fR, likewise for recommended ones.
+.Sp
+See the description of \f(CW\*(C`ev_embed\*(C'\fR watchers for more info.
+.IP "ev_set_allocator (void *(*cb)(void *ptr, long size))" 4
+.IX Item "ev_set_allocator (void *(*cb)(void *ptr, long size))"
+Sets the allocation function to use (the prototype is similar \- the
+semantics are identical to the \f(CW\*(C`realloc\*(C'\fR C89/SuS/POSIX function). It is
+used to allocate and free memory (no surprises here). If it returns zero
+when memory needs to be allocated (\f(CW\*(C`size != 0\*(C'\fR), the library might abort
+or take some potentially destructive action.
+.Sp
+Since some systems (at least OpenBSD and Darwin) fail to implement
+correct \f(CW\*(C`realloc\*(C'\fR semantics, libev will use a wrapper around the system
+\&\f(CW\*(C`realloc\*(C'\fR and \f(CW\*(C`free\*(C'\fR functions by default.
+.Sp
+You could override this function in high-availability programs to, say,
+free some memory if it cannot allocate memory, to use a special allocator,
+or even to sleep a while and retry until some memory is available.
+.Sp
+Example: Replace the libev allocator with one that waits a bit and then
+retries (example requires a standards-compliant \f(CW\*(C`realloc\*(C'\fR).
+.Sp
+.Vb 6
+\& static void *
+\& persistent_realloc (void *ptr, size_t size)
+\& {
+\& for (;;)
+\& {
+\& void *newptr = realloc (ptr, size);
+\&
+\& if (newptr)
+\& return newptr;
+\&
+\& sleep (60);
+\& }
+\& }
+\&
+\& ...
+\& ev_set_allocator (persistent_realloc);
+.Ve
+.IP "ev_set_syserr_cb (void (*cb)(const char *msg))" 4
+.IX Item "ev_set_syserr_cb (void (*cb)(const char *msg))"
+Set the callback function to call on a retryable system call error (such
+as failed select, poll, epoll_wait). The message is a printable string
+indicating the system call or subsystem causing the problem. If this
+callback is set, then libev will expect it to remedy the situation, no
+matter what, when it returns. That is, libev will generally retry the
+requested operation, or, if the condition doesn't go away, do bad stuff
+(such as abort).
+.Sp
+Example: This is basically the same thing that libev does internally, too.
+.Sp
+.Vb 6
+\& static void
+\& fatal_error (const char *msg)
+\& {
+\& perror (msg);
+\& abort ();
+\& }
+\&
+\& ...
+\& ev_set_syserr_cb (fatal_error);
+.Ve
+.IP "ev_feed_signal (int signum)" 4
+.IX Item "ev_feed_signal (int signum)"
+This function can be used to \*(L"simulate\*(R" a signal receive. It is completely
+safe to call this function at any time, from any context, including signal
+handlers or random threads.
+.Sp
+Its main use is to customise signal handling in your process, especially
+in the presence of threads. For example, you could block signals
+by default in all threads (and specifying \f(CW\*(C`EVFLAG_NOSIGMASK\*(C'\fR when
+creating any loops), and in one thread, use \f(CW\*(C`sigwait\*(C'\fR or any other
+mechanism to wait for signals, then \*(L"deliver\*(R" them to libev by calling
+\&\f(CW\*(C`ev_feed_signal\*(C'\fR.
+.SH "FUNCTIONS CONTROLLING EVENT LOOPS"
+.IX Header "FUNCTIONS CONTROLLING EVENT LOOPS"
+An event loop is described by a \f(CW\*(C`struct ev_loop *\*(C'\fR (the \f(CW\*(C`struct\*(C'\fR is
+\&\fInot\fR optional in this case unless libev 3 compatibility is disabled, as
+libev 3 had an \f(CW\*(C`ev_loop\*(C'\fR function colliding with the struct name).
+.PP
+The library knows two types of such loops, the \fIdefault\fR loop, which
+supports child process events, and dynamically created event loops which
+do not.
+.IP "struct ev_loop *ev_default_loop (unsigned int flags)" 4
+.IX Item "struct ev_loop *ev_default_loop (unsigned int flags)"
+This returns the \*(L"default\*(R" event loop object, which is what you should
+normally use when you just need \*(L"the event loop\*(R". Event loop objects and
+the \f(CW\*(C`flags\*(C'\fR parameter are described in more detail in the entry for
+\&\f(CW\*(C`ev_loop_new\*(C'\fR.
+.Sp
+If the default loop is already initialised then this function simply
+returns it (and ignores the flags. If that is troubling you, check
+\&\f(CW\*(C`ev_backend ()\*(C'\fR afterwards). Otherwise it will create it with the given
+flags, which should almost always be \f(CW0\fR, unless the caller is also the
+one calling \f(CW\*(C`ev_run\*(C'\fR or otherwise qualifies as \*(L"the main program\*(R".
+.Sp
+If you don't know what event loop to use, use the one returned from this
+function (or via the \f(CW\*(C`EV_DEFAULT\*(C'\fR macro).
+.Sp
+Note that this function is \fInot\fR thread-safe, so if you want to use it
+from multiple threads, you have to employ some kind of mutex (note also
+that this case is unlikely, as loops cannot be shared easily between
+threads anyway).
+.Sp
+The default loop is the only loop that can handle \f(CW\*(C`ev_child\*(C'\fR watchers,
+and to do this, it always registers a handler for \f(CW\*(C`SIGCHLD\*(C'\fR. If this is
+a problem for your application you can either create a dynamic loop with
+\&\f(CW\*(C`ev_loop_new\*(C'\fR which doesn't do that, or you can simply overwrite the
+\&\f(CW\*(C`SIGCHLD\*(C'\fR signal handler \fIafter\fR calling \f(CW\*(C`ev_default_init\*(C'\fR.
+.Sp
+Example: This is the most typical usage.
+.Sp
+.Vb 2
+\& if (!ev_default_loop (0))
+\& fatal ("could not initialise libev, bad $LIBEV_FLAGS in environment?");
+.Ve
+.Sp
+Example: Restrict libev to the select and poll backends, and do not allow
+environment settings to be taken into account:
+.Sp
+.Vb 1
+\& ev_default_loop (EVBACKEND_POLL | EVBACKEND_SELECT | EVFLAG_NOENV);
+.Ve
+.IP "struct ev_loop *ev_loop_new (unsigned int flags)" 4
+.IX Item "struct ev_loop *ev_loop_new (unsigned int flags)"
+This will create and initialise a new event loop object. If the loop
+could not be initialised, returns false.
+.Sp
+This function is thread-safe, and one common way to use libev with
+threads is indeed to create one loop per thread, and using the default
+loop in the \*(L"main\*(R" or \*(L"initial\*(R" thread.
+.Sp
+The flags argument can be used to specify special behaviour or specific
+backends to use, and is usually specified as \f(CW0\fR (or \f(CW\*(C`EVFLAG_AUTO\*(C'\fR).
+.Sp
+The following flags are supported:
+.RS 4
+.ie n .IP """EVFLAG_AUTO""" 4
+.el .IP "\f(CWEVFLAG_AUTO\fR" 4
+.IX Item "EVFLAG_AUTO"
+The default flags value. Use this if you have no clue (it's the right
+thing, believe me).
+.ie n .IP """EVFLAG_NOENV""" 4
+.el .IP "\f(CWEVFLAG_NOENV\fR" 4
+.IX Item "EVFLAG_NOENV"
+If this flag bit is or'ed into the flag value (or the program runs setuid
+or setgid) then libev will \fInot\fR look at the environment variable
+\&\f(CW\*(C`LIBEV_FLAGS\*(C'\fR. Otherwise (the default), this environment variable will
+override the flags completely if it is found in the environment. This is
+useful to try out specific backends to test their performance, or to work
+around bugs.
+.ie n .IP """EVFLAG_FORKCHECK""" 4
+.el .IP "\f(CWEVFLAG_FORKCHECK\fR" 4
+.IX Item "EVFLAG_FORKCHECK"
+Instead of calling \f(CW\*(C`ev_loop_fork\*(C'\fR manually after a fork, you can also
+make libev check for a fork in each iteration by enabling this flag.
+.Sp
+This works by calling \f(CW\*(C`getpid ()\*(C'\fR on every iteration of the loop,
+and thus this might slow down your event loop if you do a lot of loop
+iterations and little real work, but is usually not noticeable (on my
+GNU/Linux system for example, \f(CW\*(C`getpid\*(C'\fR is actually a simple 5\-insn sequence
+without a system call and thus \fIvery\fR fast, but my GNU/Linux system also has
+\&\f(CW\*(C`pthread_atfork\*(C'\fR which is even faster).
+.Sp
+The big advantage of this flag is that you can forget about fork (and
+forget about forgetting to tell libev about forking) when you use this
+flag.
+.Sp
+This flag setting cannot be overridden or specified in the \f(CW\*(C`LIBEV_FLAGS\*(C'\fR
+environment variable.
+.ie n .IP """EVFLAG_NOINOTIFY""" 4
+.el .IP "\f(CWEVFLAG_NOINOTIFY\fR" 4
+.IX Item "EVFLAG_NOINOTIFY"
+When this flag is specified, then libev will not attempt to use the
+\&\fIinotify\fR \s-1API\s0 for its \f(CW\*(C`ev_stat\*(C'\fR watchers. Apart from debugging and
+testing, this flag can be useful to conserve inotify file descriptors, as
+otherwise each loop using \f(CW\*(C`ev_stat\*(C'\fR watchers consumes one inotify handle.
+.ie n .IP """EVFLAG_SIGNALFD""" 4
+.el .IP "\f(CWEVFLAG_SIGNALFD\fR" 4
+.IX Item "EVFLAG_SIGNALFD"
+When this flag is specified, then libev will attempt to use the
+\&\fIsignalfd\fR \s-1API\s0 for its \f(CW\*(C`ev_signal\*(C'\fR (and \f(CW\*(C`ev_child\*(C'\fR) watchers. This \s-1API\s0
+delivers signals synchronously, which makes it both faster and might make
+it possible to get the queued signal data. It can also simplify signal
+handling with threads, as long as you properly block signals in your
+threads that are not interested in handling them.
+.Sp
+Signalfd will not be used by default as this changes your signal mask, and
+there are a lot of shoddy libraries and programs (glib's threadpool for
+example) that can't properly initialise their signal masks.
+.ie n .IP """EVFLAG_NOSIGMASK""" 4
+.el .IP "\f(CWEVFLAG_NOSIGMASK\fR" 4
+.IX Item "EVFLAG_NOSIGMASK"
+When this flag is specified, then libev will avoid to modify the signal
+mask. Specifically, this means you ahve to make sure signals are unblocked
+when you want to receive them.
+.Sp
+This behaviour is useful when you want to do your own signal handling, or
+want to handle signals only in specific threads and want to avoid libev
+unblocking the signals.
+.Sp
+It's also required by \s-1POSIX\s0 in a threaded program, as libev calls
+\&\f(CW\*(C`sigprocmask\*(C'\fR, whose behaviour is officially unspecified.
+.Sp
+This flag's behaviour will become the default in future versions of libev.
+.ie n .IP """EVBACKEND_SELECT"" (value 1, portable select backend)" 4
+.el .IP "\f(CWEVBACKEND_SELECT\fR (value 1, portable select backend)" 4
+.IX Item "EVBACKEND_SELECT (value 1, portable select backend)"
+This is your standard \fIselect\fR\|(2) backend. Not \fIcompletely\fR standard, as
+libev tries to roll its own fd_set with no limits on the number of fds,
+but if that fails, expect a fairly low limit on the number of fds when
+using this backend. It doesn't scale too well (O(highest_fd)), but its
+usually the fastest backend for a low number of (low-numbered :) fds.
+.Sp
+To get good performance out of this backend you need a high amount of
+parallelism (most of the file descriptors should be busy). If you are
+writing a server, you should \f(CW\*(C`accept ()\*(C'\fR in a loop to accept as many
+connections as possible during one iteration. You might also want to have
+a look at \f(CW\*(C`ev_set_io_collect_interval ()\*(C'\fR to increase the amount of
+readiness notifications you get per iteration.
+.Sp
+This backend maps \f(CW\*(C`EV_READ\*(C'\fR to the \f(CW\*(C`readfds\*(C'\fR set and \f(CW\*(C`EV_WRITE\*(C'\fR to the
+\&\f(CW\*(C`writefds\*(C'\fR set (and to work around Microsoft Windows bugs, also onto the
+\&\f(CW\*(C`exceptfds\*(C'\fR set on that platform).
+.ie n .IP """EVBACKEND_POLL"" (value 2, poll backend, available everywhere except on windows)" 4
+.el .IP "\f(CWEVBACKEND_POLL\fR (value 2, poll backend, available everywhere except on windows)" 4
+.IX Item "EVBACKEND_POLL (value 2, poll backend, available everywhere except on windows)"
+And this is your standard \fIpoll\fR\|(2) backend. It's more complicated
+than select, but handles sparse fds better and has no artificial
+limit on the number of fds you can use (except it will slow down
+considerably with a lot of inactive fds). It scales similarly to select,
+i.e. O(total_fds). See the entry for \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR, above, for
+performance tips.
+.Sp
+This backend maps \f(CW\*(C`EV_READ\*(C'\fR to \f(CW\*(C`POLLIN | POLLERR | POLLHUP\*(C'\fR, and
+\&\f(CW\*(C`EV_WRITE\*(C'\fR to \f(CW\*(C`POLLOUT | POLLERR | POLLHUP\*(C'\fR.
+.ie n .IP """EVBACKEND_EPOLL"" (value 4, Linux)" 4
+.el .IP "\f(CWEVBACKEND_EPOLL\fR (value 4, Linux)" 4
+.IX Item "EVBACKEND_EPOLL (value 4, Linux)"
+Use the linux-specific \fIepoll\fR\|(7) interface (for both pre\- and post\-2.6.9
+kernels).
+.Sp
+For few fds, this backend is a bit little slower than poll and select,
+but it scales phenomenally better. While poll and select usually scale
+like O(total_fds) where n is the total number of fds (or the highest fd),
+epoll scales either O(1) or O(active_fds).
+.Sp
+The epoll mechanism deserves honorable mention as the most misdesigned
+of the more advanced event mechanisms: mere annoyances include silently
+dropping file descriptors, requiring a system call per change per file
+descriptor (and unnecessary guessing of parameters), problems with dup,
+returning before the timeout value, resulting in additional iterations
+(and only giving 5ms accuracy while select on the same platform gives
+0.1ms) and so on. The biggest issue is fork races, however \- if a program
+forks then \fIboth\fR parent and child process have to recreate the epoll
+set, which can take considerable time (one syscall per file descriptor)
+and is of course hard to detect.
+.Sp
+Epoll is also notoriously buggy \- embedding epoll fds \fIshould\fR work, but
+of course \fIdoesn't\fR, and epoll just loves to report events for totally
+\&\fIdifferent\fR file descriptors (even already closed ones, so one cannot
+even remove them from the set) than registered in the set (especially
+on \s-1SMP\s0 systems). Libev tries to counter these spurious notifications by
+employing an additional generation counter and comparing that against the
+events to filter out spurious ones, recreating the set when required. Last
+not least, it also refuses to work with some file descriptors which work
+perfectly fine with \f(CW\*(C`select\*(C'\fR (files, many character devices...).
+.Sp
+Epoll is truly the train wreck analog among event poll mechanisms,
+a frankenpoll, cobbled together in a hurry, no thought to design or
+interaction with others.
+.Sp
+While stopping, setting and starting an I/O watcher in the same iteration
+will result in some caching, there is still a system call per such
+incident (because the same \fIfile descriptor\fR could point to a different
+\&\fIfile description\fR now), so its best to avoid that. Also, \f(CW\*(C`dup ()\*(C'\fR'ed
+file descriptors might not work very well if you register events for both
+file descriptors.
+.Sp
+Best performance from this backend is achieved by not unregistering all
+watchers for a file descriptor until it has been closed, if possible,
+i.e. keep at least one watcher active per fd at all times. Stopping and
+starting a watcher (without re-setting it) also usually doesn't cause
+extra overhead. A fork can both result in spurious notifications as well
+as in libev having to destroy and recreate the epoll object, which can
+take considerable time and thus should be avoided.
+.Sp
+All this means that, in practice, \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR can be as fast or
+faster than epoll for maybe up to a hundred file descriptors, depending on
+the usage. So sad.
+.Sp
+While nominally embeddable in other event loops, this feature is broken in
+all kernel versions tested so far.
+.Sp
+This backend maps \f(CW\*(C`EV_READ\*(C'\fR and \f(CW\*(C`EV_WRITE\*(C'\fR in the same way as
+\&\f(CW\*(C`EVBACKEND_POLL\*(C'\fR.
+.ie n .IP """EVBACKEND_KQUEUE"" (value 8, most \s-1BSD\s0 clones)" 4
+.el .IP "\f(CWEVBACKEND_KQUEUE\fR (value 8, most \s-1BSD\s0 clones)" 4
+.IX Item "EVBACKEND_KQUEUE (value 8, most BSD clones)"
+Kqueue deserves special mention, as at the time of this writing, it
+was broken on all BSDs except NetBSD (usually it doesn't work reliably
+with anything but sockets and pipes, except on Darwin, where of course
+it's completely useless). Unlike epoll, however, whose brokenness
+is by design, these kqueue bugs can (and eventually will) be fixed
+without \s-1API\s0 changes to existing programs. For this reason it's not being
+\&\*(L"auto-detected\*(R" unless you explicitly specify it in the flags (i.e. using
+\&\f(CW\*(C`EVBACKEND_KQUEUE\*(C'\fR) or libev was compiled on a known-to-be-good (\-enough)
+system like NetBSD.
+.Sp
+You still can embed kqueue into a normal poll or select backend and use it
+only for sockets (after having made sure that sockets work with kqueue on
+the target platform). See \f(CW\*(C`ev_embed\*(C'\fR watchers for more info.
+.Sp
+It scales in the same way as the epoll backend, but the interface to the
+kernel is more efficient (which says nothing about its actual speed, of
+course). While stopping, setting and starting an I/O watcher does never
+cause an extra system call as with \f(CW\*(C`EVBACKEND_EPOLL\*(C'\fR, it still adds up to
+two event changes per incident. Support for \f(CW\*(C`fork ()\*(C'\fR is very bad (but
+sane, unlike epoll) and it drops fds silently in similarly hard-to-detect
+cases
+.Sp
+This backend usually performs well under most conditions.
+.Sp
+While nominally embeddable in other event loops, this doesn't work
+everywhere, so you might need to test for this. And since it is broken
+almost everywhere, you should only use it when you have a lot of sockets
+(for which it usually works), by embedding it into another event loop
+(e.g. \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR (but \f(CW\*(C`poll\*(C'\fR is of course
+also broken on \s-1OS\s0 X)) and, did I mention it, using it only for sockets.
+.Sp
+This backend maps \f(CW\*(C`EV_READ\*(C'\fR into an \f(CW\*(C`EVFILT_READ\*(C'\fR kevent with
+\&\f(CW\*(C`NOTE_EOF\*(C'\fR, and \f(CW\*(C`EV_WRITE\*(C'\fR into an \f(CW\*(C`EVFILT_WRITE\*(C'\fR kevent with
+\&\f(CW\*(C`NOTE_EOF\*(C'\fR.
+.ie n .IP """EVBACKEND_DEVPOLL"" (value 16, Solaris 8)" 4
+.el .IP "\f(CWEVBACKEND_DEVPOLL\fR (value 16, Solaris 8)" 4
+.IX Item "EVBACKEND_DEVPOLL (value 16, Solaris 8)"
+This is not implemented yet (and might never be, unless you send me an
+implementation). According to reports, \f(CW\*(C`/dev/poll\*(C'\fR only supports sockets
+and is not embeddable, which would limit the usefulness of this backend
+immensely.
+.ie n .IP """EVBACKEND_PORT"" (value 32, Solaris 10)" 4
+.el .IP "\f(CWEVBACKEND_PORT\fR (value 32, Solaris 10)" 4
+.IX Item "EVBACKEND_PORT (value 32, Solaris 10)"
+This uses the Solaris 10 event port mechanism. As with everything on Solaris,
+it's really slow, but it still scales very well (O(active_fds)).
+.Sp
+While this backend scales well, it requires one system call per active
+file descriptor per loop iteration. For small and medium numbers of file
+descriptors a \*(L"slow\*(R" \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR backend
+might perform better.
+.Sp
+On the positive side, this backend actually performed fully to
+specification in all tests and is fully embeddable, which is a rare feat
+among the OS-specific backends (I vastly prefer correctness over speed
+hacks).
+.Sp
+On the negative side, the interface is \fIbizarre\fR \- so bizarre that
+even sun itself gets it wrong in their code examples: The event polling
+function sometimes returning events to the caller even though an error
+occurred, but with no indication whether it has done so or not (yes, it's
+even documented that way) \- deadly for edge-triggered interfaces where
+you absolutely have to know whether an event occurred or not because you
+have to re-arm the watcher.
+.Sp
+Fortunately libev seems to be able to work around these idiocies.
+.Sp
+This backend maps \f(CW\*(C`EV_READ\*(C'\fR and \f(CW\*(C`EV_WRITE\*(C'\fR in the same way as
+\&\f(CW\*(C`EVBACKEND_POLL\*(C'\fR.
+.ie n .IP """EVBACKEND_ALL""" 4
+.el .IP "\f(CWEVBACKEND_ALL\fR" 4
+.IX Item "EVBACKEND_ALL"
+Try all backends (even potentially broken ones that wouldn't be tried
+with \f(CW\*(C`EVFLAG_AUTO\*(C'\fR). Since this is a mask, you can do stuff such as
+\&\f(CW\*(C`EVBACKEND_ALL & ~EVBACKEND_KQUEUE\*(C'\fR.
+.Sp
+It is definitely not recommended to use this flag, use whatever
+\&\f(CW\*(C`ev_recommended_backends ()\*(C'\fR returns, or simply do not specify a backend
+at all.
+.ie n .IP """EVBACKEND_MASK""" 4
+.el .IP "\f(CWEVBACKEND_MASK\fR" 4
+.IX Item "EVBACKEND_MASK"
+Not a backend at all, but a mask to select all backend bits from a
+\&\f(CW\*(C`flags\*(C'\fR value, in case you want to mask out any backends from a flags
+value (e.g. when modifying the \f(CW\*(C`LIBEV_FLAGS\*(C'\fR environment variable).
+.RE
+.RS 4
+.Sp
+If one or more of the backend flags are or'ed into the flags value,
+then only these backends will be tried (in the reverse order as listed
+here). If none are specified, all backends in \f(CW\*(C`ev_recommended_backends
+()\*(C'\fR will be tried.
+.Sp
+Example: Try to create a event loop that uses epoll and nothing else.
+.Sp
+.Vb 3
+\& struct ev_loop *epoller = ev_loop_new (EVBACKEND_EPOLL | EVFLAG_NOENV);
+\& if (!epoller)
+\& fatal ("no epoll found here, maybe it hides under your chair");
+.Ve
+.Sp
+Example: Use whatever libev has to offer, but make sure that kqueue is
+used if available.
+.Sp
+.Vb 1
+\& struct ev_loop *loop = ev_loop_new (ev_recommended_backends () | EVBACKEND_KQUEUE);
+.Ve
+.RE
+.IP "ev_loop_destroy (loop)" 4
+.IX Item "ev_loop_destroy (loop)"
+Destroys an event loop object (frees all memory and kernel state
+etc.). None of the active event watchers will be stopped in the normal
+sense, so e.g. \f(CW\*(C`ev_is_active\*(C'\fR might still return true. It is your
+responsibility to either stop all watchers cleanly yourself \fIbefore\fR
+calling this function, or cope with the fact afterwards (which is usually
+the easiest thing, you can just ignore the watchers and/or \f(CW\*(C`free ()\*(C'\fR them
+for example).
+.Sp
+Note that certain global state, such as signal state (and installed signal
+handlers), will not be freed by this function, and related watchers (such
+as signal and child watchers) would need to be stopped manually.
+.Sp
+This function is normally used on loop objects allocated by
+\&\f(CW\*(C`ev_loop_new\*(C'\fR, but it can also be used on the default loop returned by
+\&\f(CW\*(C`ev_default_loop\*(C'\fR, in which case it is not thread-safe.
+.Sp
+Note that it is not advisable to call this function on the default loop
+except in the rare occasion where you really need to free its resources.
+If you need dynamically allocated loops it is better to use \f(CW\*(C`ev_loop_new\*(C'\fR
+and \f(CW\*(C`ev_loop_destroy\*(C'\fR.
+.IP "ev_loop_fork (loop)" 4
+.IX Item "ev_loop_fork (loop)"
+This function sets a flag that causes subsequent \f(CW\*(C`ev_run\*(C'\fR iterations to
+reinitialise the kernel state for backends that have one. Despite the
+name, you can call it anytime, but it makes most sense after forking, in
+the child process. You \fImust\fR call it (or use \f(CW\*(C`EVFLAG_FORKCHECK\*(C'\fR) in the
+child before resuming or calling \f(CW\*(C`ev_run\*(C'\fR.
+.Sp
+Again, you \fIhave\fR to call it on \fIany\fR loop that you want to re-use after
+a fork, \fIeven if you do not plan to use the loop in the parent\fR. This is
+because some kernel interfaces *cough* \fIkqueue\fR *cough* do funny things
+during fork.
+.Sp
+On the other hand, you only need to call this function in the child
+process if and only if you want to use the event loop in the child. If
+you just fork+exec or create a new loop in the child, you don't have to
+call it at all (in fact, \f(CW\*(C`epoll\*(C'\fR is so badly broken that it makes a
+difference, but libev will usually detect this case on its own and do a
+costly reset of the backend).
+.Sp
+The function itself is quite fast and it's usually not a problem to call
+it just in case after a fork.
+.Sp
+Example: Automate calling \f(CW\*(C`ev_loop_fork\*(C'\fR on the default loop when
+using pthreads.
+.Sp
+.Vb 5
+\& static void
+\& post_fork_child (void)
+\& {
+\& ev_loop_fork (EV_DEFAULT);
+\& }
+\&
+\& ...
+\& pthread_atfork (0, 0, post_fork_child);
+.Ve
+.IP "int ev_is_default_loop (loop)" 4
+.IX Item "int ev_is_default_loop (loop)"
+Returns true when the given loop is, in fact, the default loop, and false
+otherwise.
+.IP "unsigned int ev_iteration (loop)" 4
+.IX Item "unsigned int ev_iteration (loop)"
+Returns the current iteration count for the event loop, which is identical
+to the number of times libev did poll for new events. It starts at \f(CW0\fR
+and happily wraps around with enough iterations.
+.Sp
+This value can sometimes be useful as a generation counter of sorts (it
+\&\*(L"ticks\*(R" the number of loop iterations), as it roughly corresponds with
+\&\f(CW\*(C`ev_prepare\*(C'\fR and \f(CW\*(C`ev_check\*(C'\fR calls \- and is incremented between the
+prepare and check phases.
+.IP "unsigned int ev_depth (loop)" 4
+.IX Item "unsigned int ev_depth (loop)"
+Returns the number of times \f(CW\*(C`ev_run\*(C'\fR was entered minus the number of
+times \f(CW\*(C`ev_run\*(C'\fR was exited normally, in other words, the recursion depth.
+.Sp
+Outside \f(CW\*(C`ev_run\*(C'\fR, this number is zero. In a callback, this number is
+\&\f(CW1\fR, unless \f(CW\*(C`ev_run\*(C'\fR was invoked recursively (or from another thread),
+in which case it is higher.
+.Sp
+Leaving \f(CW\*(C`ev_run\*(C'\fR abnormally (setjmp/longjmp, cancelling the thread,
+throwing an exception etc.), doesn't count as \*(L"exit\*(R" \- consider this
+as a hint to avoid such ungentleman-like behaviour unless it's really
+convenient, in which case it is fully supported.
+.IP "unsigned int ev_backend (loop)" 4
+.IX Item "unsigned int ev_backend (loop)"
+Returns one of the \f(CW\*(C`EVBACKEND_*\*(C'\fR flags indicating the event backend in
+use.
+.IP "ev_tstamp ev_now (loop)" 4
+.IX Item "ev_tstamp ev_now (loop)"
+Returns the current \*(L"event loop time\*(R", which is the time the event loop
+received events and started processing them. This timestamp does not
+change as long as callbacks are being processed, and this is also the base
+time used for relative timers. You can treat it as the timestamp of the
+event occurring (or more correctly, libev finding out about it).
+.IP "ev_now_update (loop)" 4
+.IX Item "ev_now_update (loop)"
+Establishes the current time by querying the kernel, updating the time
+returned by \f(CW\*(C`ev_now ()\*(C'\fR in the progress. This is a costly operation and
+is usually done automatically within \f(CW\*(C`ev_run ()\*(C'\fR.
+.Sp
+This function is rarely useful, but when some event callback runs for a
+very long time without entering the event loop, updating libev's idea of
+the current time is a good idea.
+.Sp
+See also \*(L"The special problem of time updates\*(R" in the \f(CW\*(C`ev_timer\*(C'\fR section.
+.IP "ev_suspend (loop)" 4
+.IX Item "ev_suspend (loop)"
+.PD 0
+.IP "ev_resume (loop)" 4
+.IX Item "ev_resume (loop)"
+.PD
+These two functions suspend and resume an event loop, for use when the
+loop is not used for a while and timeouts should not be processed.
+.Sp
+A typical use case would be an interactive program such as a game: When
+the user presses \f(CW\*(C`^Z\*(C'\fR to suspend the game and resumes it an hour later it
+would be best to handle timeouts as if no time had actually passed while
+the program was suspended. This can be achieved by calling \f(CW\*(C`ev_suspend\*(C'\fR
+in your \f(CW\*(C`SIGTSTP\*(C'\fR handler, sending yourself a \f(CW\*(C`SIGSTOP\*(C'\fR and calling
+\&\f(CW\*(C`ev_resume\*(C'\fR directly afterwards to resume timer processing.
+.Sp
+Effectively, all \f(CW\*(C`ev_timer\*(C'\fR watchers will be delayed by the time spend
+between \f(CW\*(C`ev_suspend\*(C'\fR and \f(CW\*(C`ev_resume\*(C'\fR, and all \f(CW\*(C`ev_periodic\*(C'\fR watchers
+will be rescheduled (that is, they will lose any events that would have
+occurred while suspended).
+.Sp
+After calling \f(CW\*(C`ev_suspend\*(C'\fR you \fBmust not\fR call \fIany\fR function on the
+given loop other than \f(CW\*(C`ev_resume\*(C'\fR, and you \fBmust not\fR call \f(CW\*(C`ev_resume\*(C'\fR
+without a previous call to \f(CW\*(C`ev_suspend\*(C'\fR.
+.Sp
+Calling \f(CW\*(C`ev_suspend\*(C'\fR/\f(CW\*(C`ev_resume\*(C'\fR has the side effect of updating the
+event loop time (see \f(CW\*(C`ev_now_update\*(C'\fR).
+.IP "ev_run (loop, int flags)" 4
+.IX Item "ev_run (loop, int flags)"
+Finally, this is it, the event handler. This function usually is called
+after you have initialised all your watchers and you want to start
+handling events. It will ask the operating system for any new events, call
+the watcher callbacks, an then repeat the whole process indefinitely: This
+is why event loops are called \fIloops\fR.
+.Sp
+If the flags argument is specified as \f(CW0\fR, it will keep handling events
+until either no event watchers are active anymore or \f(CW\*(C`ev_break\*(C'\fR was
+called.
+.Sp
+Please note that an explicit \f(CW\*(C`ev_break\*(C'\fR is usually better than
+relying on all watchers to be stopped when deciding when a program has
+finished (especially in interactive programs), but having a program
+that automatically loops as long as it has to and no longer by virtue
+of relying on its watchers stopping correctly, that is truly a thing of
+beauty.
+.Sp
+This function is also \fImostly\fR exception-safe \- you can break out of
+a \f(CW\*(C`ev_run\*(C'\fR call by calling \f(CW\*(C`longjmp\*(C'\fR in a callback, throwing a \*(C+
+exception and so on. This does not decrement the \f(CW\*(C`ev_depth\*(C'\fR value, nor
+will it clear any outstanding \f(CW\*(C`EVBREAK_ONE\*(C'\fR breaks.
+.Sp
+A flags value of \f(CW\*(C`EVRUN_NOWAIT\*(C'\fR will look for new events, will handle
+those events and any already outstanding ones, but will not wait and
+block your process in case there are no events and will return after one
+iteration of the loop. This is sometimes useful to poll and handle new
+events while doing lengthy calculations, to keep the program responsive.
+.Sp
+A flags value of \f(CW\*(C`EVRUN_ONCE\*(C'\fR will look for new events (waiting if
+necessary) and will handle those and any already outstanding ones. It
+will block your process until at least one new event arrives (which could
+be an event internal to libev itself, so there is no guarantee that a
+user-registered callback will be called), and will return after one
+iteration of the loop.
+.Sp
+This is useful if you are waiting for some external event in conjunction
+with something not expressible using other libev watchers (i.e. "roll your
+own \f(CW\*(C`ev_run\*(C'\fR"). However, a pair of \f(CW\*(C`ev_prepare\*(C'\fR/\f(CW\*(C`ev_check\*(C'\fR watchers is
+usually a better approach for this kind of thing.
+.Sp
+Here are the gory details of what \f(CW\*(C`ev_run\*(C'\fR does:
+.Sp
+.Vb 10
+\& \- Increment loop depth.
+\& \- Reset the ev_break status.
+\& \- Before the first iteration, call any pending watchers.
+\& LOOP:
+\& \- If EVFLAG_FORKCHECK was used, check for a fork.
+\& \- If a fork was detected (by any means), queue and call all fork watchers.
+\& \- Queue and call all prepare watchers.
+\& \- If ev_break was called, goto FINISH.
+\& \- If we have been forked, detach and recreate the kernel state
+\& as to not disturb the other process.
+\& \- Update the kernel state with all outstanding changes.
+\& \- Update the "event loop time" (ev_now ()).
+\& \- Calculate for how long to sleep or block, if at all
+\& (active idle watchers, EVRUN_NOWAIT or not having
+\& any active watchers at all will result in not sleeping).
+\& \- Sleep if the I/O and timer collect interval say so.
+\& \- Increment loop iteration counter.
+\& \- Block the process, waiting for any events.
+\& \- Queue all outstanding I/O (fd) events.
+\& \- Update the "event loop time" (ev_now ()), and do time jump adjustments.
+\& \- Queue all expired timers.
+\& \- Queue all expired periodics.
+\& \- Queue all idle watchers with priority higher than that of pending events.
+\& \- Queue all check watchers.
+\& \- Call all queued watchers in reverse order (i.e. check watchers first).
+\& Signals and child watchers are implemented as I/O watchers, and will
+\& be handled here by queueing them when their watcher gets executed.
+\& \- If ev_break has been called, or EVRUN_ONCE or EVRUN_NOWAIT
+\& were used, or there are no active watchers, goto FINISH, otherwise
+\& continue with step LOOP.
+\& FINISH:
+\& \- Reset the ev_break status iff it was EVBREAK_ONE.
+\& \- Decrement the loop depth.
+\& \- Return.
+.Ve
+.Sp
+Example: Queue some jobs and then loop until no events are outstanding
+anymore.
+.Sp
+.Vb 4
+\& ... queue jobs here, make sure they register event watchers as long
+\& ... as they still have work to do (even an idle watcher will do..)
+\& ev_run (my_loop, 0);
+\& ... jobs done or somebody called break. yeah!
+.Ve
+.IP "ev_break (loop, how)" 4
+.IX Item "ev_break (loop, how)"
+Can be used to make a call to \f(CW\*(C`ev_run\*(C'\fR return early (but only after it
+has processed all outstanding events). The \f(CW\*(C`how\*(C'\fR argument must be either
+\&\f(CW\*(C`EVBREAK_ONE\*(C'\fR, which will make the innermost \f(CW\*(C`ev_run\*(C'\fR call return, or
+\&\f(CW\*(C`EVBREAK_ALL\*(C'\fR, which will make all nested \f(CW\*(C`ev_run\*(C'\fR calls return.
+.Sp
+This \*(L"break state\*(R" will be cleared on the next call to \f(CW\*(C`ev_run\*(C'\fR.
+.Sp
+It is safe to call \f(CW\*(C`ev_break\*(C'\fR from outside any \f(CW\*(C`ev_run\*(C'\fR calls, too, in
+which case it will have no effect.
+.IP "ev_ref (loop)" 4
+.IX Item "ev_ref (loop)"
+.PD 0
+.IP "ev_unref (loop)" 4
+.IX Item "ev_unref (loop)"
+.PD
+Ref/unref can be used to add or remove a reference count on the event
+loop: Every watcher keeps one reference, and as long as the reference
+count is nonzero, \f(CW\*(C`ev_run\*(C'\fR will not return on its own.
+.Sp
+This is useful when you have a watcher that you never intend to
+unregister, but that nevertheless should not keep \f(CW\*(C`ev_run\*(C'\fR from
+returning. In such a case, call \f(CW\*(C`ev_unref\*(C'\fR after starting, and \f(CW\*(C`ev_ref\*(C'\fR
+before stopping it.
+.Sp
+As an example, libev itself uses this for its internal signal pipe: It
+is not visible to the libev user and should not keep \f(CW\*(C`ev_run\*(C'\fR from
+exiting if no event watchers registered by it are active. It is also an
+excellent way to do this for generic recurring timers or from within
+third-party libraries. Just remember to \fIunref after start\fR and \fIref
+before stop\fR (but only if the watcher wasn't active before, or was active
+before, respectively. Note also that libev might stop watchers itself
+(e.g. non-repeating timers) in which case you have to \f(CW\*(C`ev_ref\*(C'\fR
+in the callback).
+.Sp
+Example: Create a signal watcher, but keep it from keeping \f(CW\*(C`ev_run\*(C'\fR
+running when nothing else is active.
+.Sp
+.Vb 4
+\& ev_signal exitsig;
+\& ev_signal_init (&exitsig, sig_cb, SIGINT);
+\& ev_signal_start (loop, &exitsig);
+\& ev_unref (loop);
+.Ve
+.Sp
+Example: For some weird reason, unregister the above signal handler again.
+.Sp
+.Vb 2
+\& ev_ref (loop);
+\& ev_signal_stop (loop, &exitsig);
+.Ve
+.IP "ev_set_io_collect_interval (loop, ev_tstamp interval)" 4
+.IX Item "ev_set_io_collect_interval (loop, ev_tstamp interval)"
+.PD 0
+.IP "ev_set_timeout_collect_interval (loop, ev_tstamp interval)" 4
+.IX Item "ev_set_timeout_collect_interval (loop, ev_tstamp interval)"
+.PD
+These advanced functions influence the time that libev will spend waiting
+for events. Both time intervals are by default \f(CW0\fR, meaning that libev
+will try to invoke timer/periodic callbacks and I/O callbacks with minimum
+latency.
+.Sp
+Setting these to a higher value (the \f(CW\*(C`interval\*(C'\fR \fImust\fR be >= \f(CW0\fR)
+allows libev to delay invocation of I/O and timer/periodic callbacks
+to increase efficiency of loop iterations (or to increase power-saving
+opportunities).
+.Sp
+The idea is that sometimes your program runs just fast enough to handle
+one (or very few) event(s) per loop iteration. While this makes the
+program responsive, it also wastes a lot of \s-1CPU\s0 time to poll for new
+events, especially with backends like \f(CW\*(C`select ()\*(C'\fR which have a high
+overhead for the actual polling but can deliver many events at once.
+.Sp
+By setting a higher \fIio collect interval\fR you allow libev to spend more
+time collecting I/O events, so you can handle more events per iteration,
+at the cost of increasing latency. Timeouts (both \f(CW\*(C`ev_periodic\*(C'\fR and
+\&\f(CW\*(C`ev_timer\*(C'\fR) will be not affected. Setting this to a non-null value will
+introduce an additional \f(CW\*(C`ev_sleep ()\*(C'\fR call into most loop iterations. The
+sleep time ensures that libev will not poll for I/O events more often then
+once per this interval, on average.
+.Sp
+Likewise, by setting a higher \fItimeout collect interval\fR you allow libev
+to spend more time collecting timeouts, at the expense of increased
+latency/jitter/inexactness (the watcher callback will be called
+later). \f(CW\*(C`ev_io\*(C'\fR watchers will not be affected. Setting this to a non-null
+value will not introduce any overhead in libev.
+.Sp
+Many (busy) programs can usually benefit by setting the I/O collect
+interval to a value near \f(CW0.1\fR or so, which is often enough for
+interactive servers (of course not for games), likewise for timeouts. It
+usually doesn't make much sense to set it to a lower value than \f(CW0.01\fR,
+as this approaches the timing granularity of most systems. Note that if
+you do transactions with the outside world and you can't increase the
+parallelity, then this setting will limit your transaction rate (if you
+need to poll once per transaction and the I/O collect interval is 0.01,
+then you can't do more than 100 transactions per second).
+.Sp
+Setting the \fItimeout collect interval\fR can improve the opportunity for
+saving power, as the program will \*(L"bundle\*(R" timer callback invocations that
+are \*(L"near\*(R" in time together, by delaying some, thus reducing the number of
+times the process sleeps and wakes up again. Another useful technique to
+reduce iterations/wake\-ups is to use \f(CW\*(C`ev_periodic\*(C'\fR watchers and make sure
+they fire on, say, one-second boundaries only.
+.Sp
+Example: we only need 0.1s timeout granularity, and we wish not to poll
+more often than 100 times per second:
+.Sp
+.Vb 2
+\& ev_set_timeout_collect_interval (EV_DEFAULT_UC_ 0.1);
+\& ev_set_io_collect_interval (EV_DEFAULT_UC_ 0.01);
+.Ve
+.IP "ev_invoke_pending (loop)" 4
+.IX Item "ev_invoke_pending (loop)"
+This call will simply invoke all pending watchers while resetting their
+pending state. Normally, \f(CW\*(C`ev_run\*(C'\fR does this automatically when required,
+but when overriding the invoke callback this call comes handy. This
+function can be invoked from a watcher \- this can be useful for example
+when you want to do some lengthy calculation and want to pass further
+event handling to another thread (you still have to make sure only one
+thread executes within \f(CW\*(C`ev_invoke_pending\*(C'\fR or \f(CW\*(C`ev_run\*(C'\fR of course).
+.IP "int ev_pending_count (loop)" 4
+.IX Item "int ev_pending_count (loop)"
+Returns the number of pending watchers \- zero indicates that no watchers
+are pending.
+.IP "ev_set_invoke_pending_cb (loop, void (*invoke_pending_cb)(\s-1EV_P\s0))" 4
+.IX Item "ev_set_invoke_pending_cb (loop, void (*invoke_pending_cb)(EV_P))"
+This overrides the invoke pending functionality of the loop: Instead of
+invoking all pending watchers when there are any, \f(CW\*(C`ev_run\*(C'\fR will call
+this callback instead. This is useful, for example, when you want to
+invoke the actual watchers inside another context (another thread etc.).
+.Sp
+If you want to reset the callback, use \f(CW\*(C`ev_invoke_pending\*(C'\fR as new
+callback.
+.IP "ev_set_loop_release_cb (loop, void (*release)(\s-1EV_P\s0), void (*acquire)(\s-1EV_P\s0))" 4
+.IX Item "ev_set_loop_release_cb (loop, void (*release)(EV_P), void (*acquire)(EV_P))"
+Sometimes you want to share the same loop between multiple threads. This
+can be done relatively simply by putting mutex_lock/unlock calls around
+each call to a libev function.
+.Sp
+However, \f(CW\*(C`ev_run\*(C'\fR can run an indefinite time, so it is not feasible
+to wait for it to return. One way around this is to wake up the event
+loop via \f(CW\*(C`ev_break\*(C'\fR and \f(CW\*(C`av_async_send\*(C'\fR, another way is to set these
+\&\fIrelease\fR and \fIacquire\fR callbacks on the loop.
+.Sp
+When set, then \f(CW\*(C`release\*(C'\fR will be called just before the thread is
+suspended waiting for new events, and \f(CW\*(C`acquire\*(C'\fR is called just
+afterwards.
+.Sp
+Ideally, \f(CW\*(C`release\*(C'\fR will just call your mutex_unlock function, and
+\&\f(CW\*(C`acquire\*(C'\fR will just call the mutex_lock function again.
+.Sp
+While event loop modifications are allowed between invocations of
+\&\f(CW\*(C`release\*(C'\fR and \f(CW\*(C`acquire\*(C'\fR (that's their only purpose after all), no
+modifications done will affect the event loop, i.e. adding watchers will
+have no effect on the set of file descriptors being watched, or the time
+waited. Use an \f(CW\*(C`ev_async\*(C'\fR watcher to wake up \f(CW\*(C`ev_run\*(C'\fR when you want it
+to take note of any changes you made.
+.Sp
+In theory, threads executing \f(CW\*(C`ev_run\*(C'\fR will be async-cancel safe between
+invocations of \f(CW\*(C`release\*(C'\fR and \f(CW\*(C`acquire\*(C'\fR.
+.Sp
+See also the locking example in the \f(CW\*(C`THREADS\*(C'\fR section later in this
+document.
+.IP "ev_set_userdata (loop, void *data)" 4
+.IX Item "ev_set_userdata (loop, void *data)"
+.PD 0
+.IP "void *ev_userdata (loop)" 4
+.IX Item "void *ev_userdata (loop)"
+.PD
+Set and retrieve a single \f(CW\*(C`void *\*(C'\fR associated with a loop. When
+\&\f(CW\*(C`ev_set_userdata\*(C'\fR has never been called, then \f(CW\*(C`ev_userdata\*(C'\fR returns
+\&\f(CW0\fR.
+.Sp
+These two functions can be used to associate arbitrary data with a loop,
+and are intended solely for the \f(CW\*(C`invoke_pending_cb\*(C'\fR, \f(CW\*(C`release\*(C'\fR and
+\&\f(CW\*(C`acquire\*(C'\fR callbacks described above, but of course can be (ab\-)used for
+any other purpose as well.
+.IP "ev_verify (loop)" 4
+.IX Item "ev_verify (loop)"
+This function only does something when \f(CW\*(C`EV_VERIFY\*(C'\fR support has been
+compiled in, which is the default for non-minimal builds. It tries to go
+through all internal structures and checks them for validity. If anything
+is found to be inconsistent, it will print an error message to standard
+error and call \f(CW\*(C`abort ()\*(C'\fR.
+.Sp
+This can be used to catch bugs inside libev itself: under normal
+circumstances, this function will never abort as of course libev keeps its
+data structures consistent.
+.SH "ANATOMY OF A WATCHER"
+.IX Header "ANATOMY OF A WATCHER"
+In the following description, uppercase \f(CW\*(C`TYPE\*(C'\fR in names stands for the
+watcher type, e.g. \f(CW\*(C`ev_TYPE_start\*(C'\fR can mean \f(CW\*(C`ev_timer_start\*(C'\fR for timer
+watchers and \f(CW\*(C`ev_io_start\*(C'\fR for I/O watchers.
+.PP
+A watcher is an opaque structure that you allocate and register to record
+your interest in some event. To make a concrete example, imagine you want
+to wait for \s-1STDIN\s0 to become readable, you would create an \f(CW\*(C`ev_io\*(C'\fR watcher
+for that:
+.PP
+.Vb 5
+\& static void my_cb (struct ev_loop *loop, ev_io *w, int revents)
+\& {
+\& ev_io_stop (w);
+\& ev_break (loop, EVBREAK_ALL);
+\& }
+\&
+\& struct ev_loop *loop = ev_default_loop (0);
+\&
+\& ev_io stdin_watcher;
+\&
+\& ev_init (&stdin_watcher, my_cb);
+\& ev_io_set (&stdin_watcher, STDIN_FILENO, EV_READ);
+\& ev_io_start (loop, &stdin_watcher);
+\&
+\& ev_run (loop, 0);
+.Ve
+.PP
+As you can see, you are responsible for allocating the memory for your
+watcher structures (and it is \fIusually\fR a bad idea to do this on the
+stack).
+.PP
+Each watcher has an associated watcher structure (called \f(CW\*(C`struct ev_TYPE\*(C'\fR
+or simply \f(CW\*(C`ev_TYPE\*(C'\fR, as typedefs are provided for all watcher structs).
+.PP
+Each watcher structure must be initialised by a call to \f(CW\*(C`ev_init (watcher
+*, callback)\*(C'\fR, which expects a callback to be provided. This callback is
+invoked each time the event occurs (or, in the case of I/O watchers, each
+time the event loop detects that the file descriptor given is readable
+and/or writable).
+.PP
+Each watcher type further has its own \f(CW\*(C`ev_TYPE_set (watcher *, ...)\*(C'\fR
+macro to configure it, with arguments specific to the watcher type. There
+is also a macro to combine initialisation and setting in one call: \f(CW\*(C`ev_TYPE_init (watcher *, callback, ...)\*(C'\fR.
+.PP
+To make the watcher actually watch out for events, you have to start it
+with a watcher-specific start function (\f(CW\*(C`ev_TYPE_start (loop, watcher
+*)\*(C'\fR), and you can stop watching for events at any time by calling the
+corresponding stop function (\f(CW\*(C`ev_TYPE_stop (loop, watcher *)\*(C'\fR.
+.PP
+As long as your watcher is active (has been started but not stopped) you
+must not touch the values stored in it. Most specifically you must never
+reinitialise it or call its \f(CW\*(C`ev_TYPE_set\*(C'\fR macro.
+.PP
+Each and every callback receives the event loop pointer as first, the
+registered watcher structure as second, and a bitset of received events as
+third argument.
+.PP
+The received events usually include a single bit per event type received
+(you can receive multiple events at the same time). The possible bit masks
+are:
+.ie n .IP """EV_READ""" 4
+.el .IP "\f(CWEV_READ\fR" 4
+.IX Item "EV_READ"
+.PD 0
+.ie n .IP """EV_WRITE""" 4
+.el .IP "\f(CWEV_WRITE\fR" 4
+.IX Item "EV_WRITE"
+.PD
+The file descriptor in the \f(CW\*(C`ev_io\*(C'\fR watcher has become readable and/or
+writable.
+.ie n .IP """EV_TIMER""" 4
+.el .IP "\f(CWEV_TIMER\fR" 4
+.IX Item "EV_TIMER"
+The \f(CW\*(C`ev_timer\*(C'\fR watcher has timed out.
+.ie n .IP """EV_PERIODIC""" 4
+.el .IP "\f(CWEV_PERIODIC\fR" 4
+.IX Item "EV_PERIODIC"
+The \f(CW\*(C`ev_periodic\*(C'\fR watcher has timed out.
+.ie n .IP """EV_SIGNAL""" 4
+.el .IP "\f(CWEV_SIGNAL\fR" 4
+.IX Item "EV_SIGNAL"
+The signal specified in the \f(CW\*(C`ev_signal\*(C'\fR watcher has been received by a thread.
+.ie n .IP """EV_CHILD""" 4
+.el .IP "\f(CWEV_CHILD\fR" 4
+.IX Item "EV_CHILD"
+The pid specified in the \f(CW\*(C`ev_child\*(C'\fR watcher has received a status change.
+.ie n .IP """EV_STAT""" 4
+.el .IP "\f(CWEV_STAT\fR" 4
+.IX Item "EV_STAT"
+The path specified in the \f(CW\*(C`ev_stat\*(C'\fR watcher changed its attributes somehow.
+.ie n .IP """EV_IDLE""" 4
+.el .IP "\f(CWEV_IDLE\fR" 4
+.IX Item "EV_IDLE"
+The \f(CW\*(C`ev_idle\*(C'\fR watcher has determined that you have nothing better to do.
+.ie n .IP """EV_PREPARE""" 4
+.el .IP "\f(CWEV_PREPARE\fR" 4
+.IX Item "EV_PREPARE"
+.PD 0
+.ie n .IP """EV_CHECK""" 4
+.el .IP "\f(CWEV_CHECK\fR" 4
+.IX Item "EV_CHECK"
+.PD
+All \f(CW\*(C`ev_prepare\*(C'\fR watchers are invoked just \fIbefore\fR \f(CW\*(C`ev_run\*(C'\fR starts
+to gather new events, and all \f(CW\*(C`ev_check\*(C'\fR watchers are invoked just after
+\&\f(CW\*(C`ev_run\*(C'\fR has gathered them, but before it invokes any callbacks for any
+received events. Callbacks of both watcher types can start and stop as
+many watchers as they want, and all of them will be taken into account
+(for example, a \f(CW\*(C`ev_prepare\*(C'\fR watcher might start an idle watcher to keep
+\&\f(CW\*(C`ev_run\*(C'\fR from blocking).
+.ie n .IP """EV_EMBED""" 4
+.el .IP "\f(CWEV_EMBED\fR" 4
+.IX Item "EV_EMBED"
+The embedded event loop specified in the \f(CW\*(C`ev_embed\*(C'\fR watcher needs attention.
+.ie n .IP """EV_FORK""" 4
+.el .IP "\f(CWEV_FORK\fR" 4
+.IX Item "EV_FORK"
+The event loop has been resumed in the child process after fork (see
+\&\f(CW\*(C`ev_fork\*(C'\fR).
+.ie n .IP """EV_CLEANUP""" 4
+.el .IP "\f(CWEV_CLEANUP\fR" 4
+.IX Item "EV_CLEANUP"
+The event loop is about to be destroyed (see \f(CW\*(C`ev_cleanup\*(C'\fR).
+.ie n .IP """EV_ASYNC""" 4
+.el .IP "\f(CWEV_ASYNC\fR" 4
+.IX Item "EV_ASYNC"
+The given async watcher has been asynchronously notified (see \f(CW\*(C`ev_async\*(C'\fR).
+.ie n .IP """EV_CUSTOM""" 4
+.el .IP "\f(CWEV_CUSTOM\fR" 4
+.IX Item "EV_CUSTOM"
+Not ever sent (or otherwise used) by libev itself, but can be freely used
+by libev users to signal watchers (e.g. via \f(CW\*(C`ev_feed_event\*(C'\fR).
+.ie n .IP """EV_ERROR""" 4
+.el .IP "\f(CWEV_ERROR\fR" 4
+.IX Item "EV_ERROR"
+An unspecified error has occurred, the watcher has been stopped. This might
+happen because the watcher could not be properly started because libev
+ran out of memory, a file descriptor was found to be closed or any other
+problem. Libev considers these application bugs.
+.Sp
+You best act on it by reporting the problem and somehow coping with the
+watcher being stopped. Note that well-written programs should not receive
+an error ever, so when your watcher receives it, this usually indicates a
+bug in your program.
+.Sp
+Libev will usually signal a few \*(L"dummy\*(R" events together with an error, for
+example it might indicate that a fd is readable or writable, and if your
+callbacks is well-written it can just attempt the operation and cope with
+the error from \fIread()\fR or \fIwrite()\fR. This will not work in multi-threaded
+programs, though, as the fd could already be closed and reused for another
+thing, so beware.
+.SS "\s-1GENERIC\s0 \s-1WATCHER\s0 \s-1FUNCTIONS\s0"
+.IX Subsection "GENERIC WATCHER FUNCTIONS"
+.ie n .IP """ev_init"" (ev_TYPE *watcher, callback)" 4
+.el .IP "\f(CWev_init\fR (ev_TYPE *watcher, callback)" 4
+.IX Item "ev_init (ev_TYPE *watcher, callback)"
+This macro initialises the generic portion of a watcher. The contents
+of the watcher object can be arbitrary (so \f(CW\*(C`malloc\*(C'\fR will do). Only
+the generic parts of the watcher are initialised, you \fIneed\fR to call
+the type-specific \f(CW\*(C`ev_TYPE_set\*(C'\fR macro afterwards to initialise the
+type-specific parts. For each type there is also a \f(CW\*(C`ev_TYPE_init\*(C'\fR macro
+which rolls both calls into one.
+.Sp
+You can reinitialise a watcher at any time as long as it has been stopped
+(or never started) and there are no pending events outstanding.
+.Sp
+The callback is always of type \f(CW\*(C`void (*)(struct ev_loop *loop, ev_TYPE *watcher,
+int revents)\*(C'\fR.
+.Sp
+Example: Initialise an \f(CW\*(C`ev_io\*(C'\fR watcher in two steps.
+.Sp
+.Vb 3
+\& ev_io w;
+\& ev_init (&w, my_cb);
+\& ev_io_set (&w, STDIN_FILENO, EV_READ);
+.Ve
+.ie n .IP """ev_TYPE_set"" (ev_TYPE *watcher, [args])" 4
+.el .IP "\f(CWev_TYPE_set\fR (ev_TYPE *watcher, [args])" 4
+.IX Item "ev_TYPE_set (ev_TYPE *watcher, [args])"
+This macro initialises the type-specific parts of a watcher. You need to
+call \f(CW\*(C`ev_init\*(C'\fR at least once before you call this macro, but you can
+call \f(CW\*(C`ev_TYPE_set\*(C'\fR any number of times. You must not, however, call this
+macro on a watcher that is active (it can be pending, however, which is a
+difference to the \f(CW\*(C`ev_init\*(C'\fR macro).
+.Sp
+Although some watcher types do not have type-specific arguments
+(e.g. \f(CW\*(C`ev_prepare\*(C'\fR) you still need to call its \f(CW\*(C`set\*(C'\fR macro.
+.Sp
+See \f(CW\*(C`ev_init\*(C'\fR, above, for an example.
+.ie n .IP """ev_TYPE_init"" (ev_TYPE *watcher, callback, [args])" 4
+.el .IP "\f(CWev_TYPE_init\fR (ev_TYPE *watcher, callback, [args])" 4
+.IX Item "ev_TYPE_init (ev_TYPE *watcher, callback, [args])"
+This convenience macro rolls both \f(CW\*(C`ev_init\*(C'\fR and \f(CW\*(C`ev_TYPE_set\*(C'\fR macro
+calls into a single call. This is the most convenient method to initialise
+a watcher. The same limitations apply, of course.
+.Sp
+Example: Initialise and set an \f(CW\*(C`ev_io\*(C'\fR watcher in one step.
+.Sp
+.Vb 1
+\& ev_io_init (&w, my_cb, STDIN_FILENO, EV_READ);
+.Ve
+.ie n .IP """ev_TYPE_start"" (loop, ev_TYPE *watcher)" 4
+.el .IP "\f(CWev_TYPE_start\fR (loop, ev_TYPE *watcher)" 4
+.IX Item "ev_TYPE_start (loop, ev_TYPE *watcher)"
+Starts (activates) the given watcher. Only active watchers will receive
+events. If the watcher is already active nothing will happen.
+.Sp
+Example: Start the \f(CW\*(C`ev_io\*(C'\fR watcher that is being abused as example in this
+whole section.
+.Sp
+.Vb 1
+\& ev_io_start (EV_DEFAULT_UC, &w);
+.Ve
+.ie n .IP """ev_TYPE_stop"" (loop, ev_TYPE *watcher)" 4
+.el .IP "\f(CWev_TYPE_stop\fR (loop, ev_TYPE *watcher)" 4
+.IX Item "ev_TYPE_stop (loop, ev_TYPE *watcher)"
+Stops the given watcher if active, and clears the pending status (whether
+the watcher was active or not).
+.Sp
+It is possible that stopped watchers are pending \- for example,
+non-repeating timers are being stopped when they become pending \- but
+calling \f(CW\*(C`ev_TYPE_stop\*(C'\fR ensures that the watcher is neither active nor
+pending. If you want to free or reuse the memory used by the watcher it is
+therefore a good idea to always call its \f(CW\*(C`ev_TYPE_stop\*(C'\fR function.
+.IP "bool ev_is_active (ev_TYPE *watcher)" 4
+.IX Item "bool ev_is_active (ev_TYPE *watcher)"
+Returns a true value iff the watcher is active (i.e. it has been started
+and not yet been stopped). As long as a watcher is active you must not modify
+it.
+.IP "bool ev_is_pending (ev_TYPE *watcher)" 4
+.IX Item "bool ev_is_pending (ev_TYPE *watcher)"
+Returns a true value iff the watcher is pending, (i.e. it has outstanding
+events but its callback has not yet been invoked). As long as a watcher
+is pending (but not active) you must not call an init function on it (but
+\&\f(CW\*(C`ev_TYPE_set\*(C'\fR is safe), you must not change its priority, and you must
+make sure the watcher is available to libev (e.g. you cannot \f(CW\*(C`free ()\*(C'\fR
+it).
+.IP "callback ev_cb (ev_TYPE *watcher)" 4
+.IX Item "callback ev_cb (ev_TYPE *watcher)"
+Returns the callback currently set on the watcher.
+.IP "ev_cb_set (ev_TYPE *watcher, callback)" 4
+.IX Item "ev_cb_set (ev_TYPE *watcher, callback)"
+Change the callback. You can change the callback at virtually any time
+(modulo threads).
+.IP "ev_set_priority (ev_TYPE *watcher, int priority)" 4
+.IX Item "ev_set_priority (ev_TYPE *watcher, int priority)"
+.PD 0
+.IP "int ev_priority (ev_TYPE *watcher)" 4
+.IX Item "int ev_priority (ev_TYPE *watcher)"
+.PD
+Set and query the priority of the watcher. The priority is a small
+integer between \f(CW\*(C`EV_MAXPRI\*(C'\fR (default: \f(CW2\fR) and \f(CW\*(C`EV_MINPRI\*(C'\fR
+(default: \f(CW\*(C`\-2\*(C'\fR). Pending watchers with higher priority will be invoked
+before watchers with lower priority, but priority will not keep watchers
+from being executed (except for \f(CW\*(C`ev_idle\*(C'\fR watchers).
+.Sp
+If you need to suppress invocation when higher priority events are pending
+you need to look at \f(CW\*(C`ev_idle\*(C'\fR watchers, which provide this functionality.
+.Sp
+You \fImust not\fR change the priority of a watcher as long as it is active or
+pending.
+.Sp
+Setting a priority outside the range of \f(CW\*(C`EV_MINPRI\*(C'\fR to \f(CW\*(C`EV_MAXPRI\*(C'\fR is
+fine, as long as you do not mind that the priority value you query might
+or might not have been clamped to the valid range.
+.Sp
+The default priority used by watchers when no priority has been set is
+always \f(CW0\fR, which is supposed to not be too high and not be too low :).
+.Sp
+See \*(L"\s-1WATCHER\s0 \s-1PRIORITY\s0 \s-1MODELS\s0\*(R", below, for a more thorough treatment of
+priorities.
+.IP "ev_invoke (loop, ev_TYPE *watcher, int revents)" 4
+.IX Item "ev_invoke (loop, ev_TYPE *watcher, int revents)"
+Invoke the \f(CW\*(C`watcher\*(C'\fR with the given \f(CW\*(C`loop\*(C'\fR and \f(CW\*(C`revents\*(C'\fR. Neither
+\&\f(CW\*(C`loop\*(C'\fR nor \f(CW\*(C`revents\*(C'\fR need to be valid as long as the watcher callback
+can deal with that fact, as both are simply passed through to the
+callback.
+.IP "int ev_clear_pending (loop, ev_TYPE *watcher)" 4
+.IX Item "int ev_clear_pending (loop, ev_TYPE *watcher)"
+If the watcher is pending, this function clears its pending status and
+returns its \f(CW\*(C`revents\*(C'\fR bitset (as if its callback was invoked). If the
+watcher isn't pending it does nothing and returns \f(CW0\fR.
+.Sp
+Sometimes it can be useful to \*(L"poll\*(R" a watcher instead of waiting for its
+callback to be invoked, which can be accomplished with this function.
+.IP "ev_feed_event (loop, ev_TYPE *watcher, int revents)" 4
+.IX Item "ev_feed_event (loop, ev_TYPE *watcher, int revents)"
+Feeds the given event set into the event loop, as if the specified event
+had happened for the specified watcher (which must be a pointer to an
+initialised but not necessarily started event watcher). Obviously you must
+not free the watcher as long as it has pending events.
+.Sp
+Stopping the watcher, letting libev invoke it, or calling
+\&\f(CW\*(C`ev_clear_pending\*(C'\fR will clear the pending event, even if the watcher was
+not started in the first place.
+.Sp
+See also \f(CW\*(C`ev_feed_fd_event\*(C'\fR and \f(CW\*(C`ev_feed_signal_event\*(C'\fR for related
+functions that do not need a watcher.
+.PP
+See also the \*(L"\s-1ASSOCIATING\s0 \s-1CUSTOM\s0 \s-1DATA\s0 \s-1WITH\s0 A \s-1WATCHER\s0\*(R" and \*(L"\s-1BUILDING\s0 \s-1YOUR\s0
+\&\s-1OWN\s0 \s-1COMPOSITE\s0 \s-1WATCHERS\s0\*(R" idioms.
+.SS "\s-1WATCHER\s0 \s-1STATES\s0"
+.IX Subsection "WATCHER STATES"
+There are various watcher states mentioned throughout this manual \-
+active, pending and so on. In this section these states and the rules to
+transition between them will be described in more detail \- and while these
+rules might look complicated, they usually do \*(L"the right thing\*(R".
+.IP "initialiased" 4
+.IX Item "initialiased"
+Before a watcher can be registered with the event looop it has to be
+initialised. This can be done with a call to \f(CW\*(C`ev_TYPE_init\*(C'\fR, or calls to
+\&\f(CW\*(C`ev_init\*(C'\fR followed by the watcher-specific \f(CW\*(C`ev_TYPE_set\*(C'\fR function.
+.Sp
+In this state it is simply some block of memory that is suitable for
+use in an event loop. It can be moved around, freed, reused etc. at
+will \- as long as you either keep the memory contents intact, or call
+\&\f(CW\*(C`ev_TYPE_init\*(C'\fR again.
+.IP "started/running/active" 4
+.IX Item "started/running/active"
+Once a watcher has been started with a call to \f(CW\*(C`ev_TYPE_start\*(C'\fR it becomes
+property of the event loop, and is actively waiting for events. While in
+this state it cannot be accessed (except in a few documented ways), moved,
+freed or anything else \- the only legal thing is to keep a pointer to it,
+and call libev functions on it that are documented to work on active watchers.
+.IP "pending" 4
+.IX Item "pending"
+If a watcher is active and libev determines that an event it is interested
+in has occurred (such as a timer expiring), it will become pending. It will
+stay in this pending state until either it is stopped or its callback is
+about to be invoked, so it is not normally pending inside the watcher
+callback.
+.Sp
+The watcher might or might not be active while it is pending (for example,
+an expired non-repeating timer can be pending but no longer active). If it
+is stopped, it can be freely accessed (e.g. by calling \f(CW\*(C`ev_TYPE_set\*(C'\fR),
+but it is still property of the event loop at this time, so cannot be
+moved, freed or reused. And if it is active the rules described in the
+previous item still apply.
+.Sp
+It is also possible to feed an event on a watcher that is not active (e.g.
+via \f(CW\*(C`ev_feed_event\*(C'\fR), in which case it becomes pending without being
+active.
+.IP "stopped" 4
+.IX Item "stopped"
+A watcher can be stopped implicitly by libev (in which case it might still
+be pending), or explicitly by calling its \f(CW\*(C`ev_TYPE_stop\*(C'\fR function. The
+latter will clear any pending state the watcher might be in, regardless
+of whether it was active or not, so stopping a watcher explicitly before
+freeing it is often a good idea.
+.Sp
+While stopped (and not pending) the watcher is essentially in the
+initialised state, that is, it can be reused, moved, modified in any way
+you wish (but when you trash the memory block, you need to \f(CW\*(C`ev_TYPE_init\*(C'\fR
+it again).
+.SS "\s-1WATCHER\s0 \s-1PRIORITY\s0 \s-1MODELS\s0"
+.IX Subsection "WATCHER PRIORITY MODELS"
+Many event loops support \fIwatcher priorities\fR, which are usually small
+integers that influence the ordering of event callback invocation
+between watchers in some way, all else being equal.
+.PP
+In libev, Watcher priorities can be set using \f(CW\*(C`ev_set_priority\*(C'\fR. See its
+description for the more technical details such as the actual priority
+range.
+.PP
+There are two common ways how these these priorities are being interpreted
+by event loops:
+.PP
+In the more common lock-out model, higher priorities \*(L"lock out\*(R" invocation
+of lower priority watchers, which means as long as higher priority
+watchers receive events, lower priority watchers are not being invoked.
+.PP
+The less common only-for-ordering model uses priorities solely to order
+callback invocation within a single event loop iteration: Higher priority
+watchers are invoked before lower priority ones, but they all get invoked
+before polling for new events.
+.PP
+Libev uses the second (only-for-ordering) model for all its watchers
+except for idle watchers (which use the lock-out model).
+.PP
+The rationale behind this is that implementing the lock-out model for
+watchers is not well supported by most kernel interfaces, and most event
+libraries will just poll for the same events again and again as long as
+their callbacks have not been executed, which is very inefficient in the
+common case of one high-priority watcher locking out a mass of lower
+priority ones.
+.PP
+Static (ordering) priorities are most useful when you have two or more
+watchers handling the same resource: a typical usage example is having an
+\&\f(CW\*(C`ev_io\*(C'\fR watcher to receive data, and an associated \f(CW\*(C`ev_timer\*(C'\fR to handle
+timeouts. Under load, data might be received while the program handles
+other jobs, but since timers normally get invoked first, the timeout
+handler will be executed before checking for data. In that case, giving
+the timer a lower priority than the I/O watcher ensures that I/O will be
+handled first even under adverse conditions (which is usually, but not
+always, what you want).
+.PP
+Since idle watchers use the \*(L"lock-out\*(R" model, meaning that idle watchers
+will only be executed when no same or higher priority watchers have
+received events, they can be used to implement the \*(L"lock-out\*(R" model when
+required.
+.PP
+For example, to emulate how many other event libraries handle priorities,
+you can associate an \f(CW\*(C`ev_idle\*(C'\fR watcher to each such watcher, and in
+the normal watcher callback, you just start the idle watcher. The real
+processing is done in the idle watcher callback. This causes libev to
+continuously poll and process kernel event data for the watcher, but when
+the lock-out case is known to be rare (which in turn is rare :), this is
+workable.
+.PP
+Usually, however, the lock-out model implemented that way will perform
+miserably under the type of load it was designed to handle. In that case,
+it might be preferable to stop the real watcher before starting the
+idle watcher, so the kernel will not have to process the event in case
+the actual processing will be delayed for considerable time.
+.PP
+Here is an example of an I/O watcher that should run at a strictly lower
+priority than the default, and which should only process data when no
+other events are pending:
+.PP
+.Vb 2
+\& ev_idle idle; // actual processing watcher
+\& ev_io io; // actual event watcher
+\&
+\& static void
+\& io_cb (EV_P_ ev_io *w, int revents)
+\& {
+\& // stop the I/O watcher, we received the event, but
+\& // are not yet ready to handle it.
+\& ev_io_stop (EV_A_ w);
+\&
+\& // start the idle watcher to handle the actual event.
+\& // it will not be executed as long as other watchers
+\& // with the default priority are receiving events.
+\& ev_idle_start (EV_A_ &idle);
+\& }
+\&
+\& static void
+\& idle_cb (EV_P_ ev_idle *w, int revents)
+\& {
+\& // actual processing
+\& read (STDIN_FILENO, ...);
+\&
+\& // have to start the I/O watcher again, as
+\& // we have handled the event
+\& ev_io_start (EV_P_ &io);
+\& }
+\&
+\& // initialisation
+\& ev_idle_init (&idle, idle_cb);
+\& ev_io_init (&io, io_cb, STDIN_FILENO, EV_READ);
+\& ev_io_start (EV_DEFAULT_ &io);
+.Ve
+.PP
+In the \*(L"real\*(R" world, it might also be beneficial to start a timer, so that
+low-priority connections can not be locked out forever under load. This
+enables your program to keep a lower latency for important connections
+during short periods of high load, while not completely locking out less
+important ones.
+.SH "WATCHER TYPES"
+.IX Header "WATCHER TYPES"
+This section describes each watcher in detail, but will not repeat
+information given in the last section. Any initialisation/set macros,
+functions and members specific to the watcher type are explained.
+.PP
+Members are additionally marked with either \fI[read\-only]\fR, meaning that,
+while the watcher is active, you can look at the member and expect some
+sensible content, but you must not modify it (you can modify it while the
+watcher is stopped to your hearts content), or \fI[read\-write]\fR, which
+means you can expect it to have some sensible content while the watcher
+is active, but you can also modify it. Modifying it may not do something
+sensible or take immediate effect (or do anything at all), but libev will
+not crash or malfunction in any way.
+.ie n .SS """ev_io"" \- is this file descriptor readable or writable?"
+.el .SS "\f(CWev_io\fP \- is this file descriptor readable or writable?"
+.IX Subsection "ev_io - is this file descriptor readable or writable?"
+I/O watchers check whether a file descriptor is readable or writable
+in each iteration of the event loop, or, more precisely, when reading
+would not block the process and writing would at least be able to write
+some data. This behaviour is called level-triggering because you keep
+receiving events as long as the condition persists. Remember you can stop
+the watcher if you don't want to act on the event and neither want to
+receive future events.
+.PP
+In general you can register as many read and/or write event watchers per
+fd as you want (as long as you don't confuse yourself). Setting all file
+descriptors to non-blocking mode is also usually a good idea (but not
+required if you know what you are doing).
+.PP
+Another thing you have to watch out for is that it is quite easy to
+receive \*(L"spurious\*(R" readiness notifications, that is, your callback might
+be called with \f(CW\*(C`EV_READ\*(C'\fR but a subsequent \f(CW\*(C`read\*(C'\fR(2) will actually block
+because there is no data. It is very easy to get into this situation even
+with a relatively standard program structure. Thus it is best to always
+use non-blocking I/O: An extra \f(CW\*(C`read\*(C'\fR(2) returning \f(CW\*(C`EAGAIN\*(C'\fR is far
+preferable to a program hanging until some data arrives.
+.PP
+If you cannot run the fd in non-blocking mode (for example you should
+not play around with an Xlib connection), then you have to separately
+re-test whether a file descriptor is really ready with a known-to-be good
+interface such as poll (fortunately in the case of Xlib, it already does
+this on its own, so its quite safe to use). Some people additionally
+use \f(CW\*(C`SIGALRM\*(C'\fR and an interval timer, just to be sure you won't block
+indefinitely.
+.PP
+But really, best use non-blocking mode.
+.PP
+\fIThe special problem of disappearing file descriptors\fR
+.IX Subsection "The special problem of disappearing file descriptors"
+.PP
+Some backends (e.g. kqueue, epoll) need to be told about closing a file
+descriptor (either due to calling \f(CW\*(C`close\*(C'\fR explicitly or any other means,
+such as \f(CW\*(C`dup2\*(C'\fR). The reason is that you register interest in some file
+descriptor, but when it goes away, the operating system will silently drop
+this interest. If another file descriptor with the same number then is
+registered with libev, there is no efficient way to see that this is, in
+fact, a different file descriptor.
+.PP
+To avoid having to explicitly tell libev about such cases, libev follows
+the following policy: Each time \f(CW\*(C`ev_io_set\*(C'\fR is being called, libev
+will assume that this is potentially a new file descriptor, otherwise
+it is assumed that the file descriptor stays the same. That means that
+you \fIhave\fR to call \f(CW\*(C`ev_io_set\*(C'\fR (or \f(CW\*(C`ev_io_init\*(C'\fR) when you change the
+descriptor even if the file descriptor number itself did not change.
+.PP
+This is how one would do it normally anyway, the important point is that
+the libev application should not optimise around libev but should leave
+optimisations to libev.
+.PP
+\fIThe special problem of dup'ed file descriptors\fR
+.IX Subsection "The special problem of dup'ed file descriptors"
+.PP
+Some backends (e.g. epoll), cannot register events for file descriptors,
+but only events for the underlying file descriptions. That means when you
+have \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors or weirder constellations, and register
+events for them, only one file descriptor might actually receive events.
+.PP
+There is no workaround possible except not registering events
+for potentially \f(CW\*(C`dup ()\*(C'\fR'ed file descriptors, or to resort to
+\&\f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR.
+.PP
+\fIThe special problem of files\fR
+.IX Subsection "The special problem of files"
+.PP
+Many people try to use \f(CW\*(C`select\*(C'\fR (or libev) on file descriptors
+representing files, and expect it to become ready when their program
+doesn't block on disk accesses (which can take a long time on their own).
+.PP
+However, this cannot ever work in the \*(L"expected\*(R" way \- you get a readiness
+notification as soon as the kernel knows whether and how much data is
+there, and in the case of open files, that's always the case, so you
+always get a readiness notification instantly, and your read (or possibly
+write) will still block on the disk I/O.
+.PP
+Another way to view it is that in the case of sockets, pipes, character
+devices and so on, there is another party (the sender) that delivers data
+on its own, but in the case of files, there is no such thing: the disk
+will not send data on its own, simply because it doesn't know what you
+wish to read \- you would first have to request some data.
+.PP
+Since files are typically not-so-well supported by advanced notification
+mechanism, libev tries hard to emulate \s-1POSIX\s0 behaviour with respect
+to files, even though you should not use it. The reason for this is
+convenience: sometimes you want to watch \s-1STDIN\s0 or \s-1STDOUT\s0, which is
+usually a tty, often a pipe, but also sometimes files or special devices
+(for example, \f(CW\*(C`epoll\*(C'\fR on Linux works with \fI/dev/random\fR but not with
+\&\fI/dev/urandom\fR), and even though the file might better be served with
+asynchronous I/O instead of with non-blocking I/O, it is still useful when
+it \*(L"just works\*(R" instead of freezing.
+.PP
+So avoid file descriptors pointing to files when you know it (e.g. use
+libeio), but use them when it is convenient, e.g. for \s-1STDIN/STDOUT\s0, or
+when you rarely read from a file instead of from a socket, and want to
+reuse the same code path.
+.PP
+\fIThe special problem of fork\fR
+.IX Subsection "The special problem of fork"
+.PP
+Some backends (epoll, kqueue) do not support \f(CW\*(C`fork ()\*(C'\fR at all or exhibit
+useless behaviour. Libev fully supports fork, but needs to be told about
+it in the child if you want to continue to use it in the child.
+.PP
+To support fork in your child processes, you have to call \f(CW\*(C`ev_loop_fork
+()\*(C'\fR after a fork in the child, enable \f(CW\*(C`EVFLAG_FORKCHECK\*(C'\fR, or resort to
+\&\f(CW\*(C`EVBACKEND_SELECT\*(C'\fR or \f(CW\*(C`EVBACKEND_POLL\*(C'\fR.
+.PP
+\fIThe special problem of \s-1SIGPIPE\s0\fR
+.IX Subsection "The special problem of SIGPIPE"
+.PP
+While not really specific to libev, it is easy to forget about \f(CW\*(C`SIGPIPE\*(C'\fR:
+when writing to a pipe whose other end has been closed, your program gets
+sent a \s-1SIGPIPE\s0, which, by default, aborts your program. For most programs
+this is sensible behaviour, for daemons, this is usually undesirable.
+.PP
+So when you encounter spurious, unexplained daemon exits, make sure you
+ignore \s-1SIGPIPE\s0 (and maybe make sure you log the exit status of your daemon
+somewhere, as that would have given you a big clue).
+.PP
+\fIThe special problem of \fIaccept()\fIing when you can't\fR
+.IX Subsection "The special problem of accept()ing when you can't"
+.PP
+Many implementations of the \s-1POSIX\s0 \f(CW\*(C`accept\*(C'\fR function (for example,
+found in post\-2004 Linux) have the peculiar behaviour of not removing a
+connection from the pending queue in all error cases.
+.PP
+For example, larger servers often run out of file descriptors (because
+of resource limits), causing \f(CW\*(C`accept\*(C'\fR to fail with \f(CW\*(C`ENFILE\*(C'\fR but not
+rejecting the connection, leading to libev signalling readiness on
+the next iteration again (the connection still exists after all), and
+typically causing the program to loop at 100% \s-1CPU\s0 usage.
+.PP
+Unfortunately, the set of errors that cause this issue differs between
+operating systems, there is usually little the app can do to remedy the
+situation, and no known thread-safe method of removing the connection to
+cope with overload is known (to me).
+.PP
+One of the easiest ways to handle this situation is to just ignore it
+\&\- when the program encounters an overload, it will just loop until the
+situation is over. While this is a form of busy waiting, no \s-1OS\s0 offers an
+event-based way to handle this situation, so it's the best one can do.
+.PP
+A better way to handle the situation is to log any errors other than
+\&\f(CW\*(C`EAGAIN\*(C'\fR and \f(CW\*(C`EWOULDBLOCK\*(C'\fR, making sure not to flood the log with such
+messages, and continue as usual, which at least gives the user an idea of
+what could be wrong (\*(L"raise the ulimit!\*(R"). For extra points one could stop
+the \f(CW\*(C`ev_io\*(C'\fR watcher on the listening fd \*(L"for a while\*(R", which reduces \s-1CPU\s0
+usage.
+.PP
+If your program is single-threaded, then you could also keep a dummy file
+descriptor for overload situations (e.g. by opening \fI/dev/null\fR), and
+when you run into \f(CW\*(C`ENFILE\*(C'\fR or \f(CW\*(C`EMFILE\*(C'\fR, close it, run \f(CW\*(C`accept\*(C'\fR,
+close that fd, and create a new dummy fd. This will gracefully refuse
+clients under typical overload conditions.
+.PP
+The last way to handle it is to simply log the error and \f(CW\*(C`exit\*(C'\fR, as
+is often done with \f(CW\*(C`malloc\*(C'\fR failures, but this results in an easy
+opportunity for a DoS attack.
+.PP
+\fIWatcher-Specific Functions\fR
+.IX Subsection "Watcher-Specific Functions"
+.IP "ev_io_init (ev_io *, callback, int fd, int events)" 4
+.IX Item "ev_io_init (ev_io *, callback, int fd, int events)"
+.PD 0
+.IP "ev_io_set (ev_io *, int fd, int events)" 4
+.IX Item "ev_io_set (ev_io *, int fd, int events)"
+.PD
+Configures an \f(CW\*(C`ev_io\*(C'\fR watcher. The \f(CW\*(C`fd\*(C'\fR is the file descriptor to
+receive events for and \f(CW\*(C`events\*(C'\fR is either \f(CW\*(C`EV_READ\*(C'\fR, \f(CW\*(C`EV_WRITE\*(C'\fR or
+\&\f(CW\*(C`EV_READ | EV_WRITE\*(C'\fR, to express the desire to receive the given events.
+.IP "int fd [read\-only]" 4
+.IX Item "int fd [read-only]"
+The file descriptor being watched.
+.IP "int events [read\-only]" 4
+.IX Item "int events [read-only]"
+The events being watched.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Call \f(CW\*(C`stdin_readable_cb\*(C'\fR when \s-1STDIN_FILENO\s0 has become, well
+readable, but only once. Since it is likely line-buffered, you could
+attempt to read a whole line in the callback.
+.PP
+.Vb 6
+\& static void
+\& stdin_readable_cb (struct ev_loop *loop, ev_io *w, int revents)
+\& {
+\& ev_io_stop (loop, w);
+\& .. read from stdin here (or from w\->fd) and handle any I/O errors
+\& }
+\&
+\& ...
+\& struct ev_loop *loop = ev_default_init (0);
+\& ev_io stdin_readable;
+\& ev_io_init (&stdin_readable, stdin_readable_cb, STDIN_FILENO, EV_READ);
+\& ev_io_start (loop, &stdin_readable);
+\& ev_run (loop, 0);
+.Ve
+.ie n .SS """ev_timer"" \- relative and optionally repeating timeouts"
+.el .SS "\f(CWev_timer\fP \- relative and optionally repeating timeouts"
+.IX Subsection "ev_timer - relative and optionally repeating timeouts"
+Timer watchers are simple relative timers that generate an event after a
+given time, and optionally repeating in regular intervals after that.
+.PP
+The timers are based on real time, that is, if you register an event that
+times out after an hour and you reset your system clock to January last
+year, it will still time out after (roughly) one hour. \*(L"Roughly\*(R" because
+detecting time jumps is hard, and some inaccuracies are unavoidable (the
+monotonic clock option helps a lot here).
+.PP
+The callback is guaranteed to be invoked only \fIafter\fR its timeout has
+passed (not \fIat\fR, so on systems with very low-resolution clocks this
+might introduce a small delay). If multiple timers become ready during the
+same loop iteration then the ones with earlier time-out values are invoked
+before ones of the same priority with later time-out values (but this is
+no longer true when a callback calls \f(CW\*(C`ev_run\*(C'\fR recursively).
+.PP
+\fIBe smart about timeouts\fR
+.IX Subsection "Be smart about timeouts"
+.PP
+Many real-world problems involve some kind of timeout, usually for error
+recovery. A typical example is an \s-1HTTP\s0 request \- if the other side hangs,
+you want to raise some error after a while.
+.PP
+What follows are some ways to handle this problem, from obvious and
+inefficient to smart and efficient.
+.PP
+In the following, a 60 second activity timeout is assumed \- a timeout that
+gets reset to 60 seconds each time there is activity (e.g. each time some
+data or other life sign was received).
+.IP "1. Use a timer and stop, reinitialise and start it on activity." 4
+.IX Item "1. Use a timer and stop, reinitialise and start it on activity."
+This is the most obvious, but not the most simple way: In the beginning,
+start the watcher:
+.Sp
+.Vb 2
+\& ev_timer_init (timer, callback, 60., 0.);
+\& ev_timer_start (loop, timer);
+.Ve
+.Sp
+Then, each time there is some activity, \f(CW\*(C`ev_timer_stop\*(C'\fR it, initialise it
+and start it again:
+.Sp
+.Vb 3
+\& ev_timer_stop (loop, timer);
+\& ev_timer_set (timer, 60., 0.);
+\& ev_timer_start (loop, timer);
+.Ve
+.Sp
+This is relatively simple to implement, but means that each time there is
+some activity, libev will first have to remove the timer from its internal
+data structure and then add it again. Libev tries to be fast, but it's
+still not a constant-time operation.
+.ie n .IP "2. Use a timer and re-start it with ""ev_timer_again"" inactivity." 4
+.el .IP "2. Use a timer and re-start it with \f(CWev_timer_again\fR inactivity." 4
+.IX Item "2. Use a timer and re-start it with ev_timer_again inactivity."
+This is the easiest way, and involves using \f(CW\*(C`ev_timer_again\*(C'\fR instead of
+\&\f(CW\*(C`ev_timer_start\*(C'\fR.
+.Sp
+To implement this, configure an \f(CW\*(C`ev_timer\*(C'\fR with a \f(CW\*(C`repeat\*(C'\fR value
+of \f(CW60\fR and then call \f(CW\*(C`ev_timer_again\*(C'\fR at start and each time you
+successfully read or write some data. If you go into an idle state where
+you do not expect data to travel on the socket, you can \f(CW\*(C`ev_timer_stop\*(C'\fR
+the timer, and \f(CW\*(C`ev_timer_again\*(C'\fR will automatically restart it if need be.
+.Sp
+That means you can ignore both the \f(CW\*(C`ev_timer_start\*(C'\fR function and the
+\&\f(CW\*(C`after\*(C'\fR argument to \f(CW\*(C`ev_timer_set\*(C'\fR, and only ever use the \f(CW\*(C`repeat\*(C'\fR
+member and \f(CW\*(C`ev_timer_again\*(C'\fR.
+.Sp
+At start:
+.Sp
+.Vb 3
+\& ev_init (timer, callback);
+\& timer\->repeat = 60.;
+\& ev_timer_again (loop, timer);
+.Ve
+.Sp
+Each time there is some activity:
+.Sp
+.Vb 1
+\& ev_timer_again (loop, timer);
+.Ve
+.Sp
+It is even possible to change the time-out on the fly, regardless of
+whether the watcher is active or not:
+.Sp
+.Vb 2
+\& timer\->repeat = 30.;
+\& ev_timer_again (loop, timer);
+.Ve
+.Sp
+This is slightly more efficient then stopping/starting the timer each time
+you want to modify its timeout value, as libev does not have to completely
+remove and re-insert the timer from/into its internal data structure.
+.Sp
+It is, however, even simpler than the \*(L"obvious\*(R" way to do it.
+.IP "3. Let the timer time out, but then re-arm it as required." 4
+.IX Item "3. Let the timer time out, but then re-arm it as required."
+This method is more tricky, but usually most efficient: Most timeouts are
+relatively long compared to the intervals between other activity \- in
+our example, within 60 seconds, there are usually many I/O events with
+associated activity resets.
+.Sp
+In this case, it would be more efficient to leave the \f(CW\*(C`ev_timer\*(C'\fR alone,
+but remember the time of last activity, and check for a real timeout only
+within the callback:
+.Sp
+.Vb 1
+\& ev_tstamp last_activity; // time of last activity
+\&
+\& static void
+\& callback (EV_P_ ev_timer *w, int revents)
+\& {
+\& ev_tstamp now = ev_now (EV_A);
+\& ev_tstamp timeout = last_activity + 60.;
+\&
+\& // if last_activity + 60. is older than now, we did time out
+\& if (timeout < now)
+\& {
+\& // timeout occurred, take action
+\& }
+\& else
+\& {
+\& // callback was invoked, but there was some activity, re\-arm
+\& // the watcher to fire in last_activity + 60, which is
+\& // guaranteed to be in the future, so "again" is positive:
+\& w\->repeat = timeout \- now;
+\& ev_timer_again (EV_A_ w);
+\& }
+\& }
+.Ve
+.Sp
+To summarise the callback: first calculate the real timeout (defined
+as \*(L"60 seconds after the last activity\*(R"), then check if that time has
+been reached, which means something \fIdid\fR, in fact, time out. Otherwise
+the callback was invoked too early (\f(CW\*(C`timeout\*(C'\fR is in the future), so
+re-schedule the timer to fire at that future time, to see if maybe we have
+a timeout then.
+.Sp
+Note how \f(CW\*(C`ev_timer_again\*(C'\fR is used, taking advantage of the
+\&\f(CW\*(C`ev_timer_again\*(C'\fR optimisation when the timer is already running.
+.Sp
+This scheme causes more callback invocations (about one every 60 seconds
+minus half the average time between activity), but virtually no calls to
+libev to change the timeout.
+.Sp
+To start the timer, simply initialise the watcher and set \f(CW\*(C`last_activity\*(C'\fR
+to the current time (meaning we just have some activity :), then call the
+callback, which will \*(L"do the right thing\*(R" and start the timer:
+.Sp
+.Vb 3
+\& ev_init (timer, callback);
+\& last_activity = ev_now (loop);
+\& callback (loop, timer, EV_TIMER);
+.Ve
+.Sp
+And when there is some activity, simply store the current time in
+\&\f(CW\*(C`last_activity\*(C'\fR, no libev calls at all:
+.Sp
+.Vb 1
+\& last_activity = ev_now (loop);
+.Ve
+.Sp
+This technique is slightly more complex, but in most cases where the
+time-out is unlikely to be triggered, much more efficient.
+.Sp
+Changing the timeout is trivial as well (if it isn't hard-coded in the
+callback :) \- just change the timeout and invoke the callback, which will
+fix things for you.
+.IP "4. Wee, just use a double-linked list for your timeouts." 4
+.IX Item "4. Wee, just use a double-linked list for your timeouts."
+If there is not one request, but many thousands (millions...), all
+employing some kind of timeout with the same timeout value, then one can
+do even better:
+.Sp
+When starting the timeout, calculate the timeout value and put the timeout
+at the \fIend\fR of the list.
+.Sp
+Then use an \f(CW\*(C`ev_timer\*(C'\fR to fire when the timeout at the \fIbeginning\fR of
+the list is expected to fire (for example, using the technique #3).
+.Sp
+When there is some activity, remove the timer from the list, recalculate
+the timeout, append it to the end of the list again, and make sure to
+update the \f(CW\*(C`ev_timer\*(C'\fR if it was taken from the beginning of the list.
+.Sp
+This way, one can manage an unlimited number of timeouts in O(1) time for
+starting, stopping and updating the timers, at the expense of a major
+complication, and having to use a constant timeout. The constant timeout
+ensures that the list stays sorted.
+.PP
+So which method the best?
+.PP
+Method #2 is a simple no-brain-required solution that is adequate in most
+situations. Method #3 requires a bit more thinking, but handles many cases
+better, and isn't very complicated either. In most case, choosing either
+one is fine, with #3 being better in typical situations.
+.PP
+Method #1 is almost always a bad idea, and buys you nothing. Method #4 is
+rather complicated, but extremely efficient, something that really pays
+off after the first million or so of active timers, i.e. it's usually
+overkill :)
+.PP
+\fIThe special problem of time updates\fR
+.IX Subsection "The special problem of time updates"
+.PP
+Establishing the current time is a costly operation (it usually takes at
+least two system calls): \s-1EV\s0 therefore updates its idea of the current
+time only before and after \f(CW\*(C`ev_run\*(C'\fR collects new events, which causes a
+growing difference between \f(CW\*(C`ev_now ()\*(C'\fR and \f(CW\*(C`ev_time ()\*(C'\fR when handling
+lots of events in one iteration.
+.PP
+The relative timeouts are calculated relative to the \f(CW\*(C`ev_now ()\*(C'\fR
+time. This is usually the right thing as this timestamp refers to the time
+of the event triggering whatever timeout you are modifying/starting. If
+you suspect event processing to be delayed and you \fIneed\fR to base the
+timeout on the current time, use something like this to adjust for this:
+.PP
+.Vb 1
+\& ev_timer_set (&timer, after + ev_now () \- ev_time (), 0.);
+.Ve
+.PP
+If the event loop is suspended for a long time, you can also force an
+update of the time returned by \f(CW\*(C`ev_now ()\*(C'\fR by calling \f(CW\*(C`ev_now_update
+()\*(C'\fR.
+.PP
+\fIThe special problems of suspended animation\fR
+.IX Subsection "The special problems of suspended animation"
+.PP
+When you leave the server world it is quite customary to hit machines that
+can suspend/hibernate \- what happens to the clocks during such a suspend?
+.PP
+Some quick tests made with a Linux 2.6.28 indicate that a suspend freezes
+all processes, while the clocks (\f(CW\*(C`times\*(C'\fR, \f(CW\*(C`CLOCK_MONOTONIC\*(C'\fR) continue
+to run until the system is suspended, but they will not advance while the
+system is suspended. That means, on resume, it will be as if the program
+was frozen for a few seconds, but the suspend time will not be counted
+towards \f(CW\*(C`ev_timer\*(C'\fR when a monotonic clock source is used. The real time
+clock advanced as expected, but if it is used as sole clocksource, then a
+long suspend would be detected as a time jump by libev, and timers would
+be adjusted accordingly.
+.PP
+I would not be surprised to see different behaviour in different between
+operating systems, \s-1OS\s0 versions or even different hardware.
+.PP
+The other form of suspend (job control, or sending a \s-1SIGSTOP\s0) will see a
+time jump in the monotonic clocks and the realtime clock. If the program
+is suspended for a very long time, and monotonic clock sources are in use,
+then you can expect \f(CW\*(C`ev_timer\*(C'\fRs to expire as the full suspension time
+will be counted towards the timers. When no monotonic clock source is in
+use, then libev will again assume a timejump and adjust accordingly.
+.PP
+It might be beneficial for this latter case to call \f(CW\*(C`ev_suspend\*(C'\fR
+and \f(CW\*(C`ev_resume\*(C'\fR in code that handles \f(CW\*(C`SIGTSTP\*(C'\fR, to at least get
+deterministic behaviour in this case (you can do nothing against
+\&\f(CW\*(C`SIGSTOP\*(C'\fR).
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat)" 4
+.IX Item "ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat)"
+.PD 0
+.IP "ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat)" 4
+.IX Item "ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat)"
+.PD
+Configure the timer to trigger after \f(CW\*(C`after\*(C'\fR seconds. If \f(CW\*(C`repeat\*(C'\fR
+is \f(CW0.\fR, then it will automatically be stopped once the timeout is
+reached. If it is positive, then the timer will automatically be
+configured to trigger again \f(CW\*(C`repeat\*(C'\fR seconds later, again, and again,
+until stopped manually.
+.Sp
+The timer itself will do a best-effort at avoiding drift, that is, if
+you configure a timer to trigger every 10 seconds, then it will normally
+trigger at exactly 10 second intervals. If, however, your program cannot
+keep up with the timer (because it takes longer than those 10 seconds to
+do stuff) the timer will not fire more than once per event loop iteration.
+.IP "ev_timer_again (loop, ev_timer *)" 4
+.IX Item "ev_timer_again (loop, ev_timer *)"
+This will act as if the timer timed out and restart it again if it is
+repeating. The exact semantics are:
+.Sp
+If the timer is pending, its pending status is cleared.
+.Sp
+If the timer is started but non-repeating, stop it (as if it timed out).
+.Sp
+If the timer is repeating, either start it if necessary (with the
+\&\f(CW\*(C`repeat\*(C'\fR value), or reset the running timer to the \f(CW\*(C`repeat\*(C'\fR value.
+.Sp
+This sounds a bit complicated, see \*(L"Be smart about timeouts\*(R", above, for a
+usage example.
+.IP "ev_tstamp ev_timer_remaining (loop, ev_timer *)" 4
+.IX Item "ev_tstamp ev_timer_remaining (loop, ev_timer *)"
+Returns the remaining time until a timer fires. If the timer is active,
+then this time is relative to the current event loop time, otherwise it's
+the timeout value currently configured.
+.Sp
+That is, after an \f(CW\*(C`ev_timer_set (w, 5, 7)\*(C'\fR, \f(CW\*(C`ev_timer_remaining\*(C'\fR returns
+\&\f(CW5\fR. When the timer is started and one second passes, \f(CW\*(C`ev_timer_remaining\*(C'\fR
+will return \f(CW4\fR. When the timer expires and is restarted, it will return
+roughly \f(CW7\fR (likely slightly less as callback invocation takes some time,
+too), and so on.
+.IP "ev_tstamp repeat [read\-write]" 4
+.IX Item "ev_tstamp repeat [read-write]"
+The current \f(CW\*(C`repeat\*(C'\fR value. Will be used each time the watcher times out
+or \f(CW\*(C`ev_timer_again\*(C'\fR is called, and determines the next timeout (if any),
+which is also when any modifications are taken into account.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Create a timer that fires after 60 seconds.
+.PP
+.Vb 5
+\& static void
+\& one_minute_cb (struct ev_loop *loop, ev_timer *w, int revents)
+\& {
+\& .. one minute over, w is actually stopped right here
+\& }
+\&
+\& ev_timer mytimer;
+\& ev_timer_init (&mytimer, one_minute_cb, 60., 0.);
+\& ev_timer_start (loop, &mytimer);
+.Ve
+.PP
+Example: Create a timeout timer that times out after 10 seconds of
+inactivity.
+.PP
+.Vb 5
+\& static void
+\& timeout_cb (struct ev_loop *loop, ev_timer *w, int revents)
+\& {
+\& .. ten seconds without any activity
+\& }
+\&
+\& ev_timer mytimer;
+\& ev_timer_init (&mytimer, timeout_cb, 0., 10.); /* note, only repeat used */
+\& ev_timer_again (&mytimer); /* start timer */
+\& ev_run (loop, 0);
+\&
+\& // and in some piece of code that gets executed on any "activity":
+\& // reset the timeout to start ticking again at 10 seconds
+\& ev_timer_again (&mytimer);
+.Ve
+.ie n .SS """ev_periodic"" \- to cron or not to cron?"
+.el .SS "\f(CWev_periodic\fP \- to cron or not to cron?"
+.IX Subsection "ev_periodic - to cron or not to cron?"
+Periodic watchers are also timers of a kind, but they are very versatile
+(and unfortunately a bit complex).
+.PP
+Unlike \f(CW\*(C`ev_timer\*(C'\fR, periodic watchers are not based on real time (or
+relative time, the physical time that passes) but on wall clock time
+(absolute time, the thing you can read on your calender or clock). The
+difference is that wall clock time can run faster or slower than real
+time, and time jumps are not uncommon (e.g. when you adjust your
+wrist-watch).
+.PP
+You can tell a periodic watcher to trigger after some specific point
+in time: for example, if you tell a periodic watcher to trigger \*(L"in 10
+seconds\*(R" (by specifying e.g. \f(CW\*(C`ev_now () + 10.\*(C'\fR, that is, an absolute time
+not a delay) and then reset your system clock to January of the previous
+year, then it will take a year or more to trigger the event (unlike an
+\&\f(CW\*(C`ev_timer\*(C'\fR, which would still trigger roughly 10 seconds after starting
+it, as it uses a relative timeout).
+.PP
+\&\f(CW\*(C`ev_periodic\*(C'\fR watchers can also be used to implement vastly more complex
+timers, such as triggering an event on each \*(L"midnight, local time\*(R", or
+other complicated rules. This cannot be done with \f(CW\*(C`ev_timer\*(C'\fR watchers, as
+those cannot react to time jumps.
+.PP
+As with timers, the callback is guaranteed to be invoked only when the
+point in time where it is supposed to trigger has passed. If multiple
+timers become ready during the same loop iteration then the ones with
+earlier time-out values are invoked before ones with later time-out values
+(but this is no longer true when a callback calls \f(CW\*(C`ev_run\*(C'\fR recursively).
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_periodic_init (ev_periodic *, callback, ev_tstamp offset, ev_tstamp interval, reschedule_cb)" 4
+.IX Item "ev_periodic_init (ev_periodic *, callback, ev_tstamp offset, ev_tstamp interval, reschedule_cb)"
+.PD 0
+.IP "ev_periodic_set (ev_periodic *, ev_tstamp offset, ev_tstamp interval, reschedule_cb)" 4
+.IX Item "ev_periodic_set (ev_periodic *, ev_tstamp offset, ev_tstamp interval, reschedule_cb)"
+.PD
+Lots of arguments, let's sort it out... There are basically three modes of
+operation, and we will explain them from simplest to most complex:
+.RS 4
+.IP "\(bu" 4
+absolute timer (offset = absolute time, interval = 0, reschedule_cb = 0)
+.Sp
+In this configuration the watcher triggers an event after the wall clock
+time \f(CW\*(C`offset\*(C'\fR has passed. It will not repeat and will not adjust when a
+time jump occurs, that is, if it is to be run at January 1st 2011 then it
+will be stopped and invoked when the system clock reaches or surpasses
+this point in time.
+.IP "\(bu" 4
+repeating interval timer (offset = offset within interval, interval > 0, reschedule_cb = 0)
+.Sp
+In this mode the watcher will always be scheduled to time out at the next
+\&\f(CW\*(C`offset + N * interval\*(C'\fR time (for some integer N, which can also be
+negative) and then repeat, regardless of any time jumps. The \f(CW\*(C`offset\*(C'\fR
+argument is merely an offset into the \f(CW\*(C`interval\*(C'\fR periods.
+.Sp
+This can be used to create timers that do not drift with respect to the
+system clock, for example, here is an \f(CW\*(C`ev_periodic\*(C'\fR that triggers each
+hour, on the hour (with respect to \s-1UTC\s0):
+.Sp
+.Vb 1
+\& ev_periodic_set (&periodic, 0., 3600., 0);
+.Ve
+.Sp
+This doesn't mean there will always be 3600 seconds in between triggers,
+but only that the callback will be called when the system time shows a
+full hour (\s-1UTC\s0), or more correctly, when the system time is evenly divisible
+by 3600.
+.Sp
+Another way to think about it (for the mathematically inclined) is that
+\&\f(CW\*(C`ev_periodic\*(C'\fR will try to run the callback in this mode at the next possible
+time where \f(CW\*(C`time = offset (mod interval)\*(C'\fR, regardless of any time jumps.
+.Sp
+For numerical stability it is preferable that the \f(CW\*(C`offset\*(C'\fR value is near
+\&\f(CW\*(C`ev_now ()\*(C'\fR (the current time), but there is no range requirement for
+this value, and in fact is often specified as zero.
+.Sp
+Note also that there is an upper limit to how often a timer can fire (\s-1CPU\s0
+speed for example), so if \f(CW\*(C`interval\*(C'\fR is very small then timing stability
+will of course deteriorate. Libev itself tries to be exact to be about one
+millisecond (if the \s-1OS\s0 supports it and the machine is fast enough).
+.IP "\(bu" 4
+manual reschedule mode (offset ignored, interval ignored, reschedule_cb = callback)
+.Sp
+In this mode the values for \f(CW\*(C`interval\*(C'\fR and \f(CW\*(C`offset\*(C'\fR are both being
+ignored. Instead, each time the periodic watcher gets scheduled, the
+reschedule callback will be called with the watcher as first, and the
+current time as second argument.
+.Sp
+\&\s-1NOTE:\s0 \fIThis callback \s-1MUST\s0 \s-1NOT\s0 stop or destroy any periodic watcher, ever,
+or make \s-1ANY\s0 other event loop modifications whatsoever, unless explicitly
+allowed by documentation here\fR.
+.Sp
+If you need to stop it, return \f(CW\*(C`now + 1e30\*(C'\fR (or so, fudge fudge) and stop
+it afterwards (e.g. by starting an \f(CW\*(C`ev_prepare\*(C'\fR watcher, which is the
+only event loop modification you are allowed to do).
+.Sp
+The callback prototype is \f(CW\*(C`ev_tstamp (*reschedule_cb)(ev_periodic
+*w, ev_tstamp now)\*(C'\fR, e.g.:
+.Sp
+.Vb 5
+\& static ev_tstamp
+\& my_rescheduler (ev_periodic *w, ev_tstamp now)
+\& {
+\& return now + 60.;
+\& }
+.Ve
+.Sp
+It must return the next time to trigger, based on the passed time value
+(that is, the lowest time value larger than to the second argument). It
+will usually be called just before the callback will be triggered, but
+might be called at other times, too.
+.Sp
+\&\s-1NOTE:\s0 \fIThis callback must always return a time that is higher than or
+equal to the passed \f(CI\*(C`now\*(C'\fI value\fR.
+.Sp
+This can be used to create very complex timers, such as a timer that
+triggers on \*(L"next midnight, local time\*(R". To do this, you would calculate the
+next midnight after \f(CW\*(C`now\*(C'\fR and return the timestamp value for this. How
+you do this is, again, up to you (but it is not trivial, which is the main
+reason I omitted it as an example).
+.RE
+.RS 4
+.RE
+.IP "ev_periodic_again (loop, ev_periodic *)" 4
+.IX Item "ev_periodic_again (loop, ev_periodic *)"
+Simply stops and restarts the periodic watcher again. This is only useful
+when you changed some parameters or the reschedule callback would return
+a different time than the last time it was called (e.g. in a crond like
+program when the crontabs have changed).
+.IP "ev_tstamp ev_periodic_at (ev_periodic *)" 4
+.IX Item "ev_tstamp ev_periodic_at (ev_periodic *)"
+When active, returns the absolute time that the watcher is supposed
+to trigger next. This is not the same as the \f(CW\*(C`offset\*(C'\fR argument to
+\&\f(CW\*(C`ev_periodic_set\*(C'\fR, but indeed works even in interval and manual
+rescheduling modes.
+.IP "ev_tstamp offset [read\-write]" 4
+.IX Item "ev_tstamp offset [read-write]"
+When repeating, this contains the offset value, otherwise this is the
+absolute point in time (the \f(CW\*(C`offset\*(C'\fR value passed to \f(CW\*(C`ev_periodic_set\*(C'\fR,
+although libev might modify this value for better numerical stability).
+.Sp
+Can be modified any time, but changes only take effect when the periodic
+timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being called.
+.IP "ev_tstamp interval [read\-write]" 4
+.IX Item "ev_tstamp interval [read-write]"
+The current interval value. Can be modified any time, but changes only
+take effect when the periodic timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being
+called.
+.IP "ev_tstamp (*reschedule_cb)(ev_periodic *w, ev_tstamp now) [read\-write]" 4
+.IX Item "ev_tstamp (*reschedule_cb)(ev_periodic *w, ev_tstamp now) [read-write]"
+The current reschedule callback, or \f(CW0\fR, if this functionality is
+switched off. Can be changed any time, but changes only take effect when
+the periodic timer fires or \f(CW\*(C`ev_periodic_again\*(C'\fR is being called.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Call a callback every hour, or, more precisely, whenever the
+system time is divisible by 3600. The callback invocation times have
+potentially a lot of jitter, but good long-term stability.
+.PP
+.Vb 5
+\& static void
+\& clock_cb (struct ev_loop *loop, ev_periodic *w, int revents)
+\& {
+\& ... its now a full hour (UTC, or TAI or whatever your clock follows)
+\& }
+\&
+\& ev_periodic hourly_tick;
+\& ev_periodic_init (&hourly_tick, clock_cb, 0., 3600., 0);
+\& ev_periodic_start (loop, &hourly_tick);
+.Ve
+.PP
+Example: The same as above, but use a reschedule callback to do it:
+.PP
+.Vb 1
+\& #include <math.h>
+\&
+\& static ev_tstamp
+\& my_scheduler_cb (ev_periodic *w, ev_tstamp now)
+\& {
+\& return now + (3600. \- fmod (now, 3600.));
+\& }
+\&
+\& ev_periodic_init (&hourly_tick, clock_cb, 0., 0., my_scheduler_cb);
+.Ve
+.PP
+Example: Call a callback every hour, starting now:
+.PP
+.Vb 4
+\& ev_periodic hourly_tick;
+\& ev_periodic_init (&hourly_tick, clock_cb,
+\& fmod (ev_now (loop), 3600.), 3600., 0);
+\& ev_periodic_start (loop, &hourly_tick);
+.Ve
+.ie n .SS """ev_signal"" \- signal me when a signal gets signalled!"
+.el .SS "\f(CWev_signal\fP \- signal me when a signal gets signalled!"
+.IX Subsection "ev_signal - signal me when a signal gets signalled!"
+Signal watchers will trigger an event when the process receives a specific
+signal one or more times. Even though signals are very asynchronous, libev
+will try its best to deliver signals synchronously, i.e. as part of the
+normal event processing, like any other event.
+.PP
+If you want signals to be delivered truly asynchronously, just use
+\&\f(CW\*(C`sigaction\*(C'\fR as you would do without libev and forget about sharing
+the signal. You can even use \f(CW\*(C`ev_async\*(C'\fR from a signal handler to
+synchronously wake up an event loop.
+.PP
+You can configure as many watchers as you like for the same signal, but
+only within the same loop, i.e. you can watch for \f(CW\*(C`SIGINT\*(C'\fR in your
+default loop and for \f(CW\*(C`SIGIO\*(C'\fR in another loop, but you cannot watch for
+\&\f(CW\*(C`SIGINT\*(C'\fR in both the default loop and another loop at the same time. At
+the moment, \f(CW\*(C`SIGCHLD\*(C'\fR is permanently tied to the default loop.
+.PP
+When the first watcher gets started will libev actually register something
+with the kernel (thus it coexists with your own signal handlers as long as
+you don't register any with libev for the same signal).
+.PP
+If possible and supported, libev will install its handlers with
+\&\f(CW\*(C`SA_RESTART\*(C'\fR (or equivalent) behaviour enabled, so system calls should
+not be unduly interrupted. If you have a problem with system calls getting
+interrupted by signals you can block all signals in an \f(CW\*(C`ev_check\*(C'\fR watcher
+and unblock them in an \f(CW\*(C`ev_prepare\*(C'\fR watcher.
+.PP
+\fIThe special problem of inheritance over fork/execve/pthread_create\fR
+.IX Subsection "The special problem of inheritance over fork/execve/pthread_create"
+.PP
+Both the signal mask (\f(CW\*(C`sigprocmask\*(C'\fR) and the signal disposition
+(\f(CW\*(C`sigaction\*(C'\fR) are unspecified after starting a signal watcher (and after
+stopping it again), that is, libev might or might not block the signal,
+and might or might not set or restore the installed signal handler (but
+see \f(CW\*(C`EVFLAG_NOSIGMASK\*(C'\fR).
+.PP
+While this does not matter for the signal disposition (libev never
+sets signals to \f(CW\*(C`SIG_IGN\*(C'\fR, so handlers will be reset to \f(CW\*(C`SIG_DFL\*(C'\fR on
+\&\f(CW\*(C`execve\*(C'\fR), this matters for the signal mask: many programs do not expect
+certain signals to be blocked.
+.PP
+This means that before calling \f(CW\*(C`exec\*(C'\fR (from the child) you should reset
+the signal mask to whatever \*(L"default\*(R" you expect (all clear is a good
+choice usually).
+.PP
+The simplest way to ensure that the signal mask is reset in the child is
+to install a fork handler with \f(CW\*(C`pthread_atfork\*(C'\fR that resets it. That will
+catch fork calls done by libraries (such as the libc) as well.
+.PP
+In current versions of libev, the signal will not be blocked indefinitely
+unless you use the \f(CW\*(C`signalfd\*(C'\fR \s-1API\s0 (\f(CW\*(C`EV_SIGNALFD\*(C'\fR). While this reduces
+the window of opportunity for problems, it will not go away, as libev
+\&\fIhas\fR to modify the signal mask, at least temporarily.
+.PP
+So I can't stress this enough: \fIIf you do not reset your signal mask when
+you expect it to be empty, you have a race condition in your code\fR. This
+is not a libev-specific thing, this is true for most event libraries.
+.PP
+\fIThe special problem of threads signal handling\fR
+.IX Subsection "The special problem of threads signal handling"
+.PP
+\&\s-1POSIX\s0 threads has problematic signal handling semantics, specifically,
+a lot of functionality (sigfd, sigwait etc.) only really works if all
+threads in a process block signals, which is hard to achieve.
+.PP
+When you want to use sigwait (or mix libev signal handling with your own
+for the same signals), you can tackle this problem by globally blocking
+all signals before creating any threads (or creating them with a fully set
+sigprocmask) and also specifying the \f(CW\*(C`EVFLAG_NOSIGMASK\*(C'\fR when creating
+loops. Then designate one thread as \*(L"signal receiver thread\*(R" which handles
+these signals. You can pass on any signals that libev might be interested
+in by calling \f(CW\*(C`ev_feed_signal\*(C'\fR.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_signal_init (ev_signal *, callback, int signum)" 4
+.IX Item "ev_signal_init (ev_signal *, callback, int signum)"
+.PD 0
+.IP "ev_signal_set (ev_signal *, int signum)" 4
+.IX Item "ev_signal_set (ev_signal *, int signum)"
+.PD
+Configures the watcher to trigger on the given signal number (usually one
+of the \f(CW\*(C`SIGxxx\*(C'\fR constants).
+.IP "int signum [read\-only]" 4
+.IX Item "int signum [read-only]"
+The signal the watcher watches out for.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Try to exit cleanly on \s-1SIGINT\s0.
+.PP
+.Vb 5
+\& static void
+\& sigint_cb (struct ev_loop *loop, ev_signal *w, int revents)
+\& {
+\& ev_break (loop, EVBREAK_ALL);
+\& }
+\&
+\& ev_signal signal_watcher;
+\& ev_signal_init (&signal_watcher, sigint_cb, SIGINT);
+\& ev_signal_start (loop, &signal_watcher);
+.Ve
+.ie n .SS """ev_child"" \- watch out for process status changes"
+.el .SS "\f(CWev_child\fP \- watch out for process status changes"
+.IX Subsection "ev_child - watch out for process status changes"
+Child watchers trigger when your process receives a \s-1SIGCHLD\s0 in response to
+some child status changes (most typically when a child of yours dies or
+exits). It is permissible to install a child watcher \fIafter\fR the child
+has been forked (which implies it might have already exited), as long
+as the event loop isn't entered (or is continued from a watcher), i.e.,
+forking and then immediately registering a watcher for the child is fine,
+but forking and registering a watcher a few event loop iterations later or
+in the next callback invocation is not.
+.PP
+Only the default event loop is capable of handling signals, and therefore
+you can only register child watchers in the default event loop.
+.PP
+Due to some design glitches inside libev, child watchers will always be
+handled at maximum priority (their priority is set to \f(CW\*(C`EV_MAXPRI\*(C'\fR by
+libev)
+.PP
+\fIProcess Interaction\fR
+.IX Subsection "Process Interaction"
+.PP
+Libev grabs \f(CW\*(C`SIGCHLD\*(C'\fR as soon as the default event loop is
+initialised. This is necessary to guarantee proper behaviour even if the
+first child watcher is started after the child exits. The occurrence
+of \f(CW\*(C`SIGCHLD\*(C'\fR is recorded asynchronously, but child reaping is done
+synchronously as part of the event loop processing. Libev always reaps all
+children, even ones not watched.
+.PP
+\fIOverriding the Built-In Processing\fR
+.IX Subsection "Overriding the Built-In Processing"
+.PP
+Libev offers no special support for overriding the built-in child
+processing, but if your application collides with libev's default child
+handler, you can override it easily by installing your own handler for
+\&\f(CW\*(C`SIGCHLD\*(C'\fR after initialising the default loop, and making sure the
+default loop never gets destroyed. You are encouraged, however, to use an
+event-based approach to child reaping and thus use libev's support for
+that, so other libev users can use \f(CW\*(C`ev_child\*(C'\fR watchers freely.
+.PP
+\fIStopping the Child Watcher\fR
+.IX Subsection "Stopping the Child Watcher"
+.PP
+Currently, the child watcher never gets stopped, even when the
+child terminates, so normally one needs to stop the watcher in the
+callback. Future versions of libev might stop the watcher automatically
+when a child exit is detected (calling \f(CW\*(C`ev_child_stop\*(C'\fR twice is not a
+problem).
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_child_init (ev_child *, callback, int pid, int trace)" 4
+.IX Item "ev_child_init (ev_child *, callback, int pid, int trace)"
+.PD 0
+.IP "ev_child_set (ev_child *, int pid, int trace)" 4
+.IX Item "ev_child_set (ev_child *, int pid, int trace)"
+.PD
+Configures the watcher to wait for status changes of process \f(CW\*(C`pid\*(C'\fR (or
+\&\fIany\fR process if \f(CW\*(C`pid\*(C'\fR is specified as \f(CW0\fR). The callback can look
+at the \f(CW\*(C`rstatus\*(C'\fR member of the \f(CW\*(C`ev_child\*(C'\fR watcher structure to see
+the status word (use the macros from \f(CW\*(C`sys/wait.h\*(C'\fR and see your systems
+\&\f(CW\*(C`waitpid\*(C'\fR documentation). The \f(CW\*(C`rpid\*(C'\fR member contains the pid of the
+process causing the status change. \f(CW\*(C`trace\*(C'\fR must be either \f(CW0\fR (only
+activate the watcher when the process terminates) or \f(CW1\fR (additionally
+activate the watcher when the process is stopped or continued).
+.IP "int pid [read\-only]" 4
+.IX Item "int pid [read-only]"
+The process id this watcher watches out for, or \f(CW0\fR, meaning any process id.
+.IP "int rpid [read\-write]" 4
+.IX Item "int rpid [read-write]"
+The process id that detected a status change.
+.IP "int rstatus [read\-write]" 4
+.IX Item "int rstatus [read-write]"
+The process exit/trace status caused by \f(CW\*(C`rpid\*(C'\fR (see your systems
+\&\f(CW\*(C`waitpid\*(C'\fR and \f(CW\*(C`sys/wait.h\*(C'\fR documentation for details).
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: \f(CW\*(C`fork()\*(C'\fR a new process and install a child handler to wait for
+its completion.
+.PP
+.Vb 1
+\& ev_child cw;
+\&
+\& static void
+\& child_cb (EV_P_ ev_child *w, int revents)
+\& {
+\& ev_child_stop (EV_A_ w);
+\& printf ("process %d exited with status %x\en", w\->rpid, w\->rstatus);
+\& }
+\&
+\& pid_t pid = fork ();
+\&
+\& if (pid < 0)
+\& // error
+\& else if (pid == 0)
+\& {
+\& // the forked child executes here
+\& exit (1);
+\& }
+\& else
+\& {
+\& ev_child_init (&cw, child_cb, pid, 0);
+\& ev_child_start (EV_DEFAULT_ &cw);
+\& }
+.Ve
+.ie n .SS """ev_stat"" \- did the file attributes just change?"
+.el .SS "\f(CWev_stat\fP \- did the file attributes just change?"
+.IX Subsection "ev_stat - did the file attributes just change?"
+This watches a file system path for attribute changes. That is, it calls
+\&\f(CW\*(C`stat\*(C'\fR on that path in regular intervals (or when the \s-1OS\s0 says it changed)
+and sees if it changed compared to the last time, invoking the callback if
+it did.
+.PP
+The path does not need to exist: changing from \*(L"path exists\*(R" to \*(L"path does
+not exist\*(R" is a status change like any other. The condition \*(L"path does not
+exist\*(R" (or more correctly \*(L"path cannot be stat'ed\*(R") is signified by the
+\&\f(CW\*(C`st_nlink\*(C'\fR field being zero (which is otherwise always forced to be at
+least one) and all the other fields of the stat buffer having unspecified
+contents.
+.PP
+The path \fImust not\fR end in a slash or contain special components such as
+\&\f(CW\*(C`.\*(C'\fR or \f(CW\*(C`..\*(C'\fR. The path \fIshould\fR be absolute: If it is relative and
+your working directory changes, then the behaviour is undefined.
+.PP
+Since there is no portable change notification interface available, the
+portable implementation simply calls \f(CWstat(2)\fR regularly on the path
+to see if it changed somehow. You can specify a recommended polling
+interval for this case. If you specify a polling interval of \f(CW0\fR (highly
+recommended!) then a \fIsuitable, unspecified default\fR value will be used
+(which you can expect to be around five seconds, although this might
+change dynamically). Libev will also impose a minimum interval which is
+currently around \f(CW0.1\fR, but that's usually overkill.
+.PP
+This watcher type is not meant for massive numbers of stat watchers,
+as even with OS-supported change notifications, this can be
+resource-intensive.
+.PP
+At the time of this writing, the only OS-specific interface implemented
+is the Linux inotify interface (implementing kqueue support is left as an
+exercise for the reader. Note, however, that the author sees no way of
+implementing \f(CW\*(C`ev_stat\*(C'\fR semantics with kqueue, except as a hint).
+.PP
+\fI\s-1ABI\s0 Issues (Largefile Support)\fR
+.IX Subsection "ABI Issues (Largefile Support)"
+.PP
+Libev by default (unless the user overrides this) uses the default
+compilation environment, which means that on systems with large file
+support disabled by default, you get the 32 bit version of the stat
+structure. When using the library from programs that change the \s-1ABI\s0 to
+use 64 bit file offsets the programs will fail. In that case you have to
+compile libev with the same flags to get binary compatibility. This is
+obviously the case with any flags that change the \s-1ABI\s0, but the problem is
+most noticeably displayed with ev_stat and large file support.
+.PP
+The solution for this is to lobby your distribution maker to make large
+file interfaces available by default (as e.g. FreeBSD does) and not
+optional. Libev cannot simply switch on large file support because it has
+to exchange stat structures with application programs compiled using the
+default compilation environment.
+.PP
+\fIInotify and Kqueue\fR
+.IX Subsection "Inotify and Kqueue"
+.PP
+When \f(CW\*(C`inotify (7)\*(C'\fR support has been compiled into libev and present at
+runtime, it will be used to speed up change detection where possible. The
+inotify descriptor will be created lazily when the first \f(CW\*(C`ev_stat\*(C'\fR
+watcher is being started.
+.PP
+Inotify presence does not change the semantics of \f(CW\*(C`ev_stat\*(C'\fR watchers
+except that changes might be detected earlier, and in some cases, to avoid
+making regular \f(CW\*(C`stat\*(C'\fR calls. Even in the presence of inotify support
+there are many cases where libev has to resort to regular \f(CW\*(C`stat\*(C'\fR polling,
+but as long as kernel 2.6.25 or newer is used (2.6.24 and older have too
+many bugs), the path exists (i.e. stat succeeds), and the path resides on
+a local filesystem (libev currently assumes only ext2/3, jfs, reiserfs and
+xfs are fully working) libev usually gets away without polling.
+.PP
+There is no support for kqueue, as apparently it cannot be used to
+implement this functionality, due to the requirement of having a file
+descriptor open on the object at all times, and detecting renames, unlinks
+etc. is difficult.
+.PP
+\fI\f(CI\*(C`stat ()\*(C'\fI is a synchronous operation\fR
+.IX Subsection "stat () is a synchronous operation"
+.PP
+Libev doesn't normally do any kind of I/O itself, and so is not blocking
+the process. The exception are \f(CW\*(C`ev_stat\*(C'\fR watchers \- those call \f(CW\*(C`stat
+()\*(C'\fR, which is a synchronous operation.
+.PP
+For local paths, this usually doesn't matter: unless the system is very
+busy or the intervals between stat's are large, a stat call will be fast,
+as the path data is usually in memory already (except when starting the
+watcher).
+.PP
+For networked file systems, calling \f(CW\*(C`stat ()\*(C'\fR can block an indefinite
+time due to network issues, and even under good conditions, a stat call
+often takes multiple milliseconds.
+.PP
+Therefore, it is best to avoid using \f(CW\*(C`ev_stat\*(C'\fR watchers on networked
+paths, although this is fully supported by libev.
+.PP
+\fIThe special problem of stat time resolution\fR
+.IX Subsection "The special problem of stat time resolution"
+.PP
+The \f(CW\*(C`stat ()\*(C'\fR system call only supports full-second resolution portably,
+and even on systems where the resolution is higher, most file systems
+still only support whole seconds.
+.PP
+That means that, if the time is the only thing that changes, you can
+easily miss updates: on the first update, \f(CW\*(C`ev_stat\*(C'\fR detects a change and
+calls your callback, which does something. When there is another update
+within the same second, \f(CW\*(C`ev_stat\*(C'\fR will be unable to detect unless the
+stat data does change in other ways (e.g. file size).
+.PP
+The solution to this is to delay acting on a change for slightly more
+than a second (or till slightly after the next full second boundary), using
+a roughly one-second-delay \f(CW\*(C`ev_timer\*(C'\fR (e.g. \f(CW\*(C`ev_timer_set (w, 0., 1.02);
+ev_timer_again (loop, w)\*(C'\fR).
+.PP
+The \f(CW.02\fR offset is added to work around small timing inconsistencies
+of some operating systems (where the second counter of the current time
+might be be delayed. One such system is the Linux kernel, where a call to
+\&\f(CW\*(C`gettimeofday\*(C'\fR might return a timestamp with a full second later than
+a subsequent \f(CW\*(C`time\*(C'\fR call \- if the equivalent of \f(CW\*(C`time ()\*(C'\fR is used to
+update file times then there will be a small window where the kernel uses
+the previous second to update file times but libev might already execute
+the timer callback).
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_stat_init (ev_stat *, callback, const char *path, ev_tstamp interval)" 4
+.IX Item "ev_stat_init (ev_stat *, callback, const char *path, ev_tstamp interval)"
+.PD 0
+.IP "ev_stat_set (ev_stat *, const char *path, ev_tstamp interval)" 4
+.IX Item "ev_stat_set (ev_stat *, const char *path, ev_tstamp interval)"
+.PD
+Configures the watcher to wait for status changes of the given
+\&\f(CW\*(C`path\*(C'\fR. The \f(CW\*(C`interval\*(C'\fR is a hint on how quickly a change is expected to
+be detected and should normally be specified as \f(CW0\fR to let libev choose
+a suitable value. The memory pointed to by \f(CW\*(C`path\*(C'\fR must point to the same
+path for as long as the watcher is active.
+.Sp
+The callback will receive an \f(CW\*(C`EV_STAT\*(C'\fR event when a change was detected,
+relative to the attributes at the time the watcher was started (or the
+last change was detected).
+.IP "ev_stat_stat (loop, ev_stat *)" 4
+.IX Item "ev_stat_stat (loop, ev_stat *)"
+Updates the stat buffer immediately with new values. If you change the
+watched path in your callback, you could call this function to avoid
+detecting this change (while introducing a race condition if you are not
+the only one changing the path). Can also be useful simply to find out the
+new values.
+.IP "ev_statdata attr [read\-only]" 4
+.IX Item "ev_statdata attr [read-only]"
+The most-recently detected attributes of the file. Although the type is
+\&\f(CW\*(C`ev_statdata\*(C'\fR, this is usually the (or one of the) \f(CW\*(C`struct stat\*(C'\fR types
+suitable for your system, but you can only rely on the POSIX-standardised
+members to be present. If the \f(CW\*(C`st_nlink\*(C'\fR member is \f(CW0\fR, then there was
+some error while \f(CW\*(C`stat\*(C'\fRing the file.
+.IP "ev_statdata prev [read\-only]" 4
+.IX Item "ev_statdata prev [read-only]"
+The previous attributes of the file. The callback gets invoked whenever
+\&\f(CW\*(C`prev\*(C'\fR != \f(CW\*(C`attr\*(C'\fR, or, more precisely, one or more of these members
+differ: \f(CW\*(C`st_dev\*(C'\fR, \f(CW\*(C`st_ino\*(C'\fR, \f(CW\*(C`st_mode\*(C'\fR, \f(CW\*(C`st_nlink\*(C'\fR, \f(CW\*(C`st_uid\*(C'\fR,
+\&\f(CW\*(C`st_gid\*(C'\fR, \f(CW\*(C`st_rdev\*(C'\fR, \f(CW\*(C`st_size\*(C'\fR, \f(CW\*(C`st_atime\*(C'\fR, \f(CW\*(C`st_mtime\*(C'\fR, \f(CW\*(C`st_ctime\*(C'\fR.
+.IP "ev_tstamp interval [read\-only]" 4
+.IX Item "ev_tstamp interval [read-only]"
+The specified interval.
+.IP "const char *path [read\-only]" 4
+.IX Item "const char *path [read-only]"
+The file system path that is being watched.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Watch \f(CW\*(C`/etc/passwd\*(C'\fR for attribute changes.
+.PP
+.Vb 10
+\& static void
+\& passwd_cb (struct ev_loop *loop, ev_stat *w, int revents)
+\& {
+\& /* /etc/passwd changed in some way */
+\& if (w\->attr.st_nlink)
+\& {
+\& printf ("passwd current size %ld\en", (long)w\->attr.st_size);
+\& printf ("passwd current atime %ld\en", (long)w\->attr.st_mtime);
+\& printf ("passwd current mtime %ld\en", (long)w\->attr.st_mtime);
+\& }
+\& else
+\& /* you shalt not abuse printf for puts */
+\& puts ("wow, /etc/passwd is not there, expect problems. "
+\& "if this is windows, they already arrived\en");
+\& }
+\&
+\& ...
+\& ev_stat passwd;
+\&
+\& ev_stat_init (&passwd, passwd_cb, "/etc/passwd", 0.);
+\& ev_stat_start (loop, &passwd);
+.Ve
+.PP
+Example: Like above, but additionally use a one-second delay so we do not
+miss updates (however, frequent updates will delay processing, too, so
+one might do the work both on \f(CW\*(C`ev_stat\*(C'\fR callback invocation \fIand\fR on
+\&\f(CW\*(C`ev_timer\*(C'\fR callback invocation).
+.PP
+.Vb 2
+\& static ev_stat passwd;
+\& static ev_timer timer;
+\&
+\& static void
+\& timer_cb (EV_P_ ev_timer *w, int revents)
+\& {
+\& ev_timer_stop (EV_A_ w);
+\&
+\& /* now it\*(Aqs one second after the most recent passwd change */
+\& }
+\&
+\& static void
+\& stat_cb (EV_P_ ev_stat *w, int revents)
+\& {
+\& /* reset the one\-second timer */
+\& ev_timer_again (EV_A_ &timer);
+\& }
+\&
+\& ...
+\& ev_stat_init (&passwd, stat_cb, "/etc/passwd", 0.);
+\& ev_stat_start (loop, &passwd);
+\& ev_timer_init (&timer, timer_cb, 0., 1.02);
+.Ve
+.ie n .SS """ev_idle"" \- when you've got nothing better to do..."
+.el .SS "\f(CWev_idle\fP \- when you've got nothing better to do..."
+.IX Subsection "ev_idle - when you've got nothing better to do..."
+Idle watchers trigger events when no other events of the same or higher
+priority are pending (prepare, check and other idle watchers do not count
+as receiving \*(L"events\*(R").
+.PP
+That is, as long as your process is busy handling sockets or timeouts
+(or even signals, imagine) of the same or higher priority it will not be
+triggered. But when your process is idle (or only lower-priority watchers
+are pending), the idle watchers are being called once per event loop
+iteration \- until stopped, that is, or your process receives more events
+and becomes busy again with higher priority stuff.
+.PP
+The most noteworthy effect is that as long as any idle watchers are
+active, the process will not block when waiting for new events.
+.PP
+Apart from keeping your process non-blocking (which is a useful
+effect on its own sometimes), idle watchers are a good place to do
+\&\*(L"pseudo-background processing\*(R", or delay processing stuff to after the
+event loop has handled all outstanding events.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_idle_init (ev_idle *, callback)" 4
+.IX Item "ev_idle_init (ev_idle *, callback)"
+Initialises and configures the idle watcher \- it has no parameters of any
+kind. There is a \f(CW\*(C`ev_idle_set\*(C'\fR macro, but using it is utterly pointless,
+believe me.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Dynamically allocate an \f(CW\*(C`ev_idle\*(C'\fR watcher, start it, and in the
+callback, free it. Also, use no error checking, as usual.
+.PP
+.Vb 7
+\& static void
+\& idle_cb (struct ev_loop *loop, ev_idle *w, int revents)
+\& {
+\& free (w);
+\& // now do something you wanted to do when the program has
+\& // no longer anything immediate to do.
+\& }
+\&
+\& ev_idle *idle_watcher = malloc (sizeof (ev_idle));
+\& ev_idle_init (idle_watcher, idle_cb);
+\& ev_idle_start (loop, idle_watcher);
+.Ve
+.ie n .SS """ev_prepare"" and ""ev_check"" \- customise your event loop!"
+.el .SS "\f(CWev_prepare\fP and \f(CWev_check\fP \- customise your event loop!"
+.IX Subsection "ev_prepare and ev_check - customise your event loop!"
+Prepare and check watchers are usually (but not always) used in pairs:
+prepare watchers get invoked before the process blocks and check watchers
+afterwards.
+.PP
+You \fImust not\fR call \f(CW\*(C`ev_run\*(C'\fR or similar functions that enter
+the current event loop from either \f(CW\*(C`ev_prepare\*(C'\fR or \f(CW\*(C`ev_check\*(C'\fR
+watchers. Other loops than the current one are fine, however. The
+rationale behind this is that you do not need to check for recursion in
+those watchers, i.e. the sequence will always be \f(CW\*(C`ev_prepare\*(C'\fR, blocking,
+\&\f(CW\*(C`ev_check\*(C'\fR so if you have one watcher of each kind they will always be
+called in pairs bracketing the blocking call.
+.PP
+Their main purpose is to integrate other event mechanisms into libev and
+their use is somewhat advanced. They could be used, for example, to track
+variable changes, implement your own watchers, integrate net-snmp or a
+coroutine library and lots more. They are also occasionally useful if
+you cache some data and want to flush it before blocking (for example,
+in X programs you might want to do an \f(CW\*(C`XFlush ()\*(C'\fR in an \f(CW\*(C`ev_prepare\*(C'\fR
+watcher).
+.PP
+This is done by examining in each prepare call which file descriptors
+need to be watched by the other library, registering \f(CW\*(C`ev_io\*(C'\fR watchers
+for them and starting an \f(CW\*(C`ev_timer\*(C'\fR watcher for any timeouts (many
+libraries provide exactly this functionality). Then, in the check watcher,
+you check for any events that occurred (by checking the pending status
+of all watchers and stopping them) and call back into the library. The
+I/O and timer callbacks will never actually be called (but must be valid
+nevertheless, because you never know, you know?).
+.PP
+As another example, the Perl Coro module uses these hooks to integrate
+coroutines into libev programs, by yielding to other active coroutines
+during each prepare and only letting the process block if no coroutines
+are ready to run (it's actually more complicated: it only runs coroutines
+with priority higher than or equal to the event loop and one coroutine
+of lower priority, but only once, using idle watchers to keep the event
+loop from blocking if lower-priority coroutines are active, thus mapping
+low-priority coroutines to idle/background tasks).
+.PP
+It is recommended to give \f(CW\*(C`ev_check\*(C'\fR watchers highest (\f(CW\*(C`EV_MAXPRI\*(C'\fR)
+priority, to ensure that they are being run before any other watchers
+after the poll (this doesn't matter for \f(CW\*(C`ev_prepare\*(C'\fR watchers).
+.PP
+Also, \f(CW\*(C`ev_check\*(C'\fR watchers (and \f(CW\*(C`ev_prepare\*(C'\fR watchers, too) should not
+activate (\*(L"feed\*(R") events into libev. While libev fully supports this, they
+might get executed before other \f(CW\*(C`ev_check\*(C'\fR watchers did their job. As
+\&\f(CW\*(C`ev_check\*(C'\fR watchers are often used to embed other (non-libev) event
+loops those other event loops might be in an unusable state until their
+\&\f(CW\*(C`ev_check\*(C'\fR watcher ran (always remind yourself to coexist peacefully with
+others).
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_prepare_init (ev_prepare *, callback)" 4
+.IX Item "ev_prepare_init (ev_prepare *, callback)"
+.PD 0
+.IP "ev_check_init (ev_check *, callback)" 4
+.IX Item "ev_check_init (ev_check *, callback)"
+.PD
+Initialises and configures the prepare or check watcher \- they have no
+parameters of any kind. There are \f(CW\*(C`ev_prepare_set\*(C'\fR and \f(CW\*(C`ev_check_set\*(C'\fR
+macros, but using them is utterly, utterly, utterly and completely
+pointless.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+There are a number of principal ways to embed other event loops or modules
+into libev. Here are some ideas on how to include libadns into libev
+(there is a Perl module named \f(CW\*(C`EV::ADNS\*(C'\fR that does this, which you could
+use as a working example. Another Perl module named \f(CW\*(C`EV::Glib\*(C'\fR embeds a
+Glib main context into libev, and finally, \f(CW\*(C`Glib::EV\*(C'\fR embeds \s-1EV\s0 into the
+Glib event loop).
+.PP
+Method 1: Add \s-1IO\s0 watchers and a timeout watcher in a prepare handler,
+and in a check watcher, destroy them and call into libadns. What follows
+is pseudo-code only of course. This requires you to either use a low
+priority for the check watcher or use \f(CW\*(C`ev_clear_pending\*(C'\fR explicitly, as
+the callbacks for the IO/timeout watchers might not have been called yet.
+.PP
+.Vb 2
+\& static ev_io iow [nfd];
+\& static ev_timer tw;
+\&
+\& static void
+\& io_cb (struct ev_loop *loop, ev_io *w, int revents)
+\& {
+\& }
+\&
+\& // create io watchers for each fd and a timer before blocking
+\& static void
+\& adns_prepare_cb (struct ev_loop *loop, ev_prepare *w, int revents)
+\& {
+\& int timeout = 3600000;
+\& struct pollfd fds [nfd];
+\& // actual code will need to loop here and realloc etc.
+\& adns_beforepoll (ads, fds, &nfd, &timeout, timeval_from (ev_time ()));
+\&
+\& /* the callback is illegal, but won\*(Aqt be called as we stop during check */
+\& ev_timer_init (&tw, 0, timeout * 1e\-3, 0.);
+\& ev_timer_start (loop, &tw);
+\&
+\& // create one ev_io per pollfd
+\& for (int i = 0; i < nfd; ++i)
+\& {
+\& ev_io_init (iow + i, io_cb, fds [i].fd,
+\& ((fds [i].events & POLLIN ? EV_READ : 0)
+\& | (fds [i].events & POLLOUT ? EV_WRITE : 0)));
+\&
+\& fds [i].revents = 0;
+\& ev_io_start (loop, iow + i);
+\& }
+\& }
+\&
+\& // stop all watchers after blocking
+\& static void
+\& adns_check_cb (struct ev_loop *loop, ev_check *w, int revents)
+\& {
+\& ev_timer_stop (loop, &tw);
+\&
+\& for (int i = 0; i < nfd; ++i)
+\& {
+\& // set the relevant poll flags
+\& // could also call adns_processreadable etc. here
+\& struct pollfd *fd = fds + i;
+\& int revents = ev_clear_pending (iow + i);
+\& if (revents & EV_READ ) fd\->revents |= fd\->events & POLLIN;
+\& if (revents & EV_WRITE) fd\->revents |= fd\->events & POLLOUT;
+\&
+\& // now stop the watcher
+\& ev_io_stop (loop, iow + i);
+\& }
+\&
+\& adns_afterpoll (adns, fds, nfd, timeval_from (ev_now (loop));
+\& }
+.Ve
+.PP
+Method 2: This would be just like method 1, but you run \f(CW\*(C`adns_afterpoll\*(C'\fR
+in the prepare watcher and would dispose of the check watcher.
+.PP
+Method 3: If the module to be embedded supports explicit event
+notification (libadns does), you can also make use of the actual watcher
+callbacks, and only destroy/create the watchers in the prepare watcher.
+.PP
+.Vb 5
+\& static void
+\& timer_cb (EV_P_ ev_timer *w, int revents)
+\& {
+\& adns_state ads = (adns_state)w\->data;
+\& update_now (EV_A);
+\&
+\& adns_processtimeouts (ads, &tv_now);
+\& }
+\&
+\& static void
+\& io_cb (EV_P_ ev_io *w, int revents)
+\& {
+\& adns_state ads = (adns_state)w\->data;
+\& update_now (EV_A);
+\&
+\& if (revents & EV_READ ) adns_processreadable (ads, w\->fd, &tv_now);
+\& if (revents & EV_WRITE) adns_processwriteable (ads, w\->fd, &tv_now);
+\& }
+\&
+\& // do not ever call adns_afterpoll
+.Ve
+.PP
+Method 4: Do not use a prepare or check watcher because the module you
+want to embed is not flexible enough to support it. Instead, you can
+override their poll function. The drawback with this solution is that the
+main loop is now no longer controllable by \s-1EV\s0. The \f(CW\*(C`Glib::EV\*(C'\fR module uses
+this approach, effectively embedding \s-1EV\s0 as a client into the horrible
+libglib event loop.
+.PP
+.Vb 4
+\& static gint
+\& event_poll_func (GPollFD *fds, guint nfds, gint timeout)
+\& {
+\& int got_events = 0;
+\&
+\& for (n = 0; n < nfds; ++n)
+\& // create/start io watcher that sets the relevant bits in fds[n] and increment got_events
+\&
+\& if (timeout >= 0)
+\& // create/start timer
+\&
+\& // poll
+\& ev_run (EV_A_ 0);
+\&
+\& // stop timer again
+\& if (timeout >= 0)
+\& ev_timer_stop (EV_A_ &to);
+\&
+\& // stop io watchers again \- their callbacks should have set
+\& for (n = 0; n < nfds; ++n)
+\& ev_io_stop (EV_A_ iow [n]);
+\&
+\& return got_events;
+\& }
+.Ve
+.ie n .SS """ev_embed"" \- when one backend isn't enough..."
+.el .SS "\f(CWev_embed\fP \- when one backend isn't enough..."
+.IX Subsection "ev_embed - when one backend isn't enough..."
+This is a rather advanced watcher type that lets you embed one event loop
+into another (currently only \f(CW\*(C`ev_io\*(C'\fR events are supported in the embedded
+loop, other types of watchers might be handled in a delayed or incorrect
+fashion and must not be used).
+.PP
+There are primarily two reasons you would want that: work around bugs and
+prioritise I/O.
+.PP
+As an example for a bug workaround, the kqueue backend might only support
+sockets on some platform, so it is unusable as generic backend, but you
+still want to make use of it because you have many sockets and it scales
+so nicely. In this case, you would create a kqueue-based loop and embed
+it into your default loop (which might use e.g. poll). Overall operation
+will be a bit slower because first libev has to call \f(CW\*(C`poll\*(C'\fR and then
+\&\f(CW\*(C`kevent\*(C'\fR, but at least you can use both mechanisms for what they are
+best: \f(CW\*(C`kqueue\*(C'\fR for scalable sockets and \f(CW\*(C`poll\*(C'\fR if you want it to work :)
+.PP
+As for prioritising I/O: under rare circumstances you have the case where
+some fds have to be watched and handled very quickly (with low latency),
+and even priorities and idle watchers might have too much overhead. In
+this case you would put all the high priority stuff in one loop and all
+the rest in a second one, and embed the second one in the first.
+.PP
+As long as the watcher is active, the callback will be invoked every
+time there might be events pending in the embedded loop. The callback
+must then call \f(CW\*(C`ev_embed_sweep (mainloop, watcher)\*(C'\fR to make a single
+sweep and invoke their callbacks (the callback doesn't need to invoke the
+\&\f(CW\*(C`ev_embed_sweep\*(C'\fR function directly, it could also start an idle watcher
+to give the embedded loop strictly lower priority for example).
+.PP
+You can also set the callback to \f(CW0\fR, in which case the embed watcher
+will automatically execute the embedded loop sweep whenever necessary.
+.PP
+Fork detection will be handled transparently while the \f(CW\*(C`ev_embed\*(C'\fR watcher
+is active, i.e., the embedded loop will automatically be forked when the
+embedding loop forks. In other cases, the user is responsible for calling
+\&\f(CW\*(C`ev_loop_fork\*(C'\fR on the embedded loop.
+.PP
+Unfortunately, not all backends are embeddable: only the ones returned by
+\&\f(CW\*(C`ev_embeddable_backends\*(C'\fR are, which, unfortunately, does not include any
+portable one.
+.PP
+So when you want to use this feature you will always have to be prepared
+that you cannot get an embeddable loop. The recommended way to get around
+this is to have a separate variables for your embeddable loop, try to
+create it, and if that fails, use the normal loop for everything.
+.PP
+\fI\f(CI\*(C`ev_embed\*(C'\fI and fork\fR
+.IX Subsection "ev_embed and fork"
+.PP
+While the \f(CW\*(C`ev_embed\*(C'\fR watcher is running, forks in the embedding loop will
+automatically be applied to the embedded loop as well, so no special
+fork handling is required in that case. When the watcher is not running,
+however, it is still the task of the libev user to call \f(CW\*(C`ev_loop_fork ()\*(C'\fR
+as applicable.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_embed_init (ev_embed *, callback, struct ev_loop *embedded_loop)" 4
+.IX Item "ev_embed_init (ev_embed *, callback, struct ev_loop *embedded_loop)"
+.PD 0
+.IP "ev_embed_set (ev_embed *, callback, struct ev_loop *embedded_loop)" 4
+.IX Item "ev_embed_set (ev_embed *, callback, struct ev_loop *embedded_loop)"
+.PD
+Configures the watcher to embed the given loop, which must be
+embeddable. If the callback is \f(CW0\fR, then \f(CW\*(C`ev_embed_sweep\*(C'\fR will be
+invoked automatically, otherwise it is the responsibility of the callback
+to invoke it (it will continue to be called until the sweep has been done,
+if you do not want that, you need to temporarily stop the embed watcher).
+.IP "ev_embed_sweep (loop, ev_embed *)" 4
+.IX Item "ev_embed_sweep (loop, ev_embed *)"
+Make a single, non-blocking sweep over the embedded loop. This works
+similarly to \f(CW\*(C`ev_run (embedded_loop, EVRUN_NOWAIT)\*(C'\fR, but in the most
+appropriate way for embedded loops.
+.IP "struct ev_loop *other [read\-only]" 4
+.IX Item "struct ev_loop *other [read-only]"
+The embedded event loop.
+.PP
+\fIExamples\fR
+.IX Subsection "Examples"
+.PP
+Example: Try to get an embeddable event loop and embed it into the default
+event loop. If that is not possible, use the default loop. The default
+loop is stored in \f(CW\*(C`loop_hi\*(C'\fR, while the embeddable loop is stored in
+\&\f(CW\*(C`loop_lo\*(C'\fR (which is \f(CW\*(C`loop_hi\*(C'\fR in the case no embeddable loop can be
+used).
+.PP
+.Vb 3
+\& struct ev_loop *loop_hi = ev_default_init (0);
+\& struct ev_loop *loop_lo = 0;
+\& ev_embed embed;
+\&
+\& // see if there is a chance of getting one that works
+\& // (remember that a flags value of 0 means autodetection)
+\& loop_lo = ev_embeddable_backends () & ev_recommended_backends ()
+\& ? ev_loop_new (ev_embeddable_backends () & ev_recommended_backends ())
+\& : 0;
+\&
+\& // if we got one, then embed it, otherwise default to loop_hi
+\& if (loop_lo)
+\& {
+\& ev_embed_init (&embed, 0, loop_lo);
+\& ev_embed_start (loop_hi, &embed);
+\& }
+\& else
+\& loop_lo = loop_hi;
+.Ve
+.PP
+Example: Check if kqueue is available but not recommended and create
+a kqueue backend for use with sockets (which usually work with any
+kqueue implementation). Store the kqueue/socket\-only event loop in
+\&\f(CW\*(C`loop_socket\*(C'\fR. (One might optionally use \f(CW\*(C`EVFLAG_NOENV\*(C'\fR, too).
+.PP
+.Vb 3
+\& struct ev_loop *loop = ev_default_init (0);
+\& struct ev_loop *loop_socket = 0;
+\& ev_embed embed;
+\&
+\& if (ev_supported_backends () & ~ev_recommended_backends () & EVBACKEND_KQUEUE)
+\& if ((loop_socket = ev_loop_new (EVBACKEND_KQUEUE))
+\& {
+\& ev_embed_init (&embed, 0, loop_socket);
+\& ev_embed_start (loop, &embed);
+\& }
+\&
+\& if (!loop_socket)
+\& loop_socket = loop;
+\&
+\& // now use loop_socket for all sockets, and loop for everything else
+.Ve
+.ie n .SS """ev_fork"" \- the audacity to resume the event loop after a fork"
+.el .SS "\f(CWev_fork\fP \- the audacity to resume the event loop after a fork"
+.IX Subsection "ev_fork - the audacity to resume the event loop after a fork"
+Fork watchers are called when a \f(CW\*(C`fork ()\*(C'\fR was detected (usually because
+whoever is a good citizen cared to tell libev about it by calling
+\&\f(CW\*(C`ev_default_fork\*(C'\fR or \f(CW\*(C`ev_loop_fork\*(C'\fR). The invocation is done before the
+event loop blocks next and before \f(CW\*(C`ev_check\*(C'\fR watchers are being called,
+and only in the child after the fork. If whoever good citizen calling
+\&\f(CW\*(C`ev_default_fork\*(C'\fR cheats and calls it in the wrong process, the fork
+handlers will be invoked, too, of course.
+.PP
+\fIThe special problem of life after fork \- how is it possible?\fR
+.IX Subsection "The special problem of life after fork - how is it possible?"
+.PP
+Most uses of \f(CW\*(C`fork()\*(C'\fR consist of forking, then some simple calls to set
+up/change the process environment, followed by a call to \f(CW\*(C`exec()\*(C'\fR. This
+sequence should be handled by libev without any problems.
+.PP
+This changes when the application actually wants to do event handling
+in the child, or both parent in child, in effect \*(L"continuing\*(R" after the
+fork.
+.PP
+The default mode of operation (for libev, with application help to detect
+forks) is to duplicate all the state in the child, as would be expected
+when \fIeither\fR the parent \fIor\fR the child process continues.
+.PP
+When both processes want to continue using libev, then this is usually the
+wrong result. In that case, usually one process (typically the parent) is
+supposed to continue with all watchers in place as before, while the other
+process typically wants to start fresh, i.e. without any active watchers.
+.PP
+The cleanest and most efficient way to achieve that with libev is to
+simply create a new event loop, which of course will be \*(L"empty\*(R", and
+use that for new watchers. This has the advantage of not touching more
+memory than necessary, and thus avoiding the copy-on-write, and the
+disadvantage of having to use multiple event loops (which do not support
+signal watchers).
+.PP
+When this is not possible, or you want to use the default loop for
+other reasons, then in the process that wants to start \*(L"fresh\*(R", call
+\&\f(CW\*(C`ev_loop_destroy (EV_DEFAULT)\*(C'\fR followed by \f(CW\*(C`ev_default_loop (...)\*(C'\fR.
+Destroying the default loop will \*(L"orphan\*(R" (not stop) all registered
+watchers, so you have to be careful not to execute code that modifies
+those watchers. Note also that in that case, you have to re-register any
+signal watchers.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_fork_init (ev_fork *, callback)" 4
+.IX Item "ev_fork_init (ev_fork *, callback)"
+Initialises and configures the fork watcher \- it has no parameters of any
+kind. There is a \f(CW\*(C`ev_fork_set\*(C'\fR macro, but using it is utterly pointless,
+really.
+.ie n .SS """ev_cleanup"" \- even the best things end"
+.el .SS "\f(CWev_cleanup\fP \- even the best things end"
+.IX Subsection "ev_cleanup - even the best things end"
+Cleanup watchers are called just before the event loop is being destroyed
+by a call to \f(CW\*(C`ev_loop_destroy\*(C'\fR.
+.PP
+While there is no guarantee that the event loop gets destroyed, cleanup
+watchers provide a convenient method to install cleanup hooks for your
+program, worker threads and so on \- you just to make sure to destroy the
+loop when you want them to be invoked.
+.PP
+Cleanup watchers are invoked in the same way as any other watcher. Unlike
+all other watchers, they do not keep a reference to the event loop (which
+makes a lot of sense if you think about it). Like all other watchers, you
+can call libev functions in the callback, except \f(CW\*(C`ev_cleanup_start\*(C'\fR.
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_cleanup_init (ev_cleanup *, callback)" 4
+.IX Item "ev_cleanup_init (ev_cleanup *, callback)"
+Initialises and configures the cleanup watcher \- it has no parameters of
+any kind. There is a \f(CW\*(C`ev_cleanup_set\*(C'\fR macro, but using it is utterly
+pointless, I assure you.
+.PP
+Example: Register an atexit handler to destroy the default loop, so any
+cleanup functions are called.
+.PP
+.Vb 5
+\& static void
+\& program_exits (void)
+\& {
+\& ev_loop_destroy (EV_DEFAULT_UC);
+\& }
+\&
+\& ...
+\& atexit (program_exits);
+.Ve
+.ie n .SS """ev_async"" \- how to wake up an event loop"
+.el .SS "\f(CWev_async\fP \- how to wake up an event loop"
+.IX Subsection "ev_async - how to wake up an event loop"
+In general, you cannot use an \f(CW\*(C`ev_loop\*(C'\fR from multiple threads or other
+asynchronous sources such as signal handlers (as opposed to multiple event
+loops \- those are of course safe to use in different threads).
+.PP
+Sometimes, however, you need to wake up an event loop you do not control,
+for example because it belongs to another thread. This is what \f(CW\*(C`ev_async\*(C'\fR
+watchers do: as long as the \f(CW\*(C`ev_async\*(C'\fR watcher is active, you can signal
+it by calling \f(CW\*(C`ev_async_send\*(C'\fR, which is thread\- and signal safe.
+.PP
+This functionality is very similar to \f(CW\*(C`ev_signal\*(C'\fR watchers, as signals,
+too, are asynchronous in nature, and signals, too, will be compressed
+(i.e. the number of callback invocations may be less than the number of
+\&\f(CW\*(C`ev_async_sent\*(C'\fR calls). In fact, you could use signal watchers as a kind
+of \*(L"global async watchers\*(R" by using a watcher on an otherwise unused
+signal, and \f(CW\*(C`ev_feed_signal\*(C'\fR to signal this watcher from another thread,
+even without knowing which loop owns the signal.
+.PP
+Unlike \f(CW\*(C`ev_signal\*(C'\fR watchers, \f(CW\*(C`ev_async\*(C'\fR works with any event loop, not
+just the default loop.
+.PP
+\fIQueueing\fR
+.IX Subsection "Queueing"
+.PP
+\&\f(CW\*(C`ev_async\*(C'\fR does not support queueing of data in any way. The reason
+is that the author does not know of a simple (or any) algorithm for a
+multiple-writer-single-reader queue that works in all cases and doesn't
+need elaborate support such as pthreads or unportable memory access
+semantics.
+.PP
+That means that if you want to queue data, you have to provide your own
+queue. But at least I can tell you how to implement locking around your
+queue:
+.IP "queueing from a signal handler context" 4
+.IX Item "queueing from a signal handler context"
+To implement race-free queueing, you simply add to the queue in the signal
+handler but you block the signal handler in the watcher callback. Here is
+an example that does that for some fictitious \s-1SIGUSR1\s0 handler:
+.Sp
+.Vb 1
+\& static ev_async mysig;
+\&
+\& static void
+\& sigusr1_handler (void)
+\& {
+\& sometype data;
+\&
+\& // no locking etc.
+\& queue_put (data);
+\& ev_async_send (EV_DEFAULT_ &mysig);
+\& }
+\&
+\& static void
+\& mysig_cb (EV_P_ ev_async *w, int revents)
+\& {
+\& sometype data;
+\& sigset_t block, prev;
+\&
+\& sigemptyset (&block);
+\& sigaddset (&block, SIGUSR1);
+\& sigprocmask (SIG_BLOCK, &block, &prev);
+\&
+\& while (queue_get (&data))
+\& process (data);
+\&
+\& if (sigismember (&prev, SIGUSR1)
+\& sigprocmask (SIG_UNBLOCK, &block, 0);
+\& }
+.Ve
+.Sp
+(Note: pthreads in theory requires you to use \f(CW\*(C`pthread_setmask\*(C'\fR
+instead of \f(CW\*(C`sigprocmask\*(C'\fR when you use threads, but libev doesn't do it
+either...).
+.IP "queueing from a thread context" 4
+.IX Item "queueing from a thread context"
+The strategy for threads is different, as you cannot (easily) block
+threads but you can easily preempt them, so to queue safely you need to
+employ a traditional mutex lock, such as in this pthread example:
+.Sp
+.Vb 2
+\& static ev_async mysig;
+\& static pthread_mutex_t mymutex = PTHREAD_MUTEX_INITIALIZER;
+\&
+\& static void
+\& otherthread (void)
+\& {
+\& // only need to lock the actual queueing operation
+\& pthread_mutex_lock (&mymutex);
+\& queue_put (data);
+\& pthread_mutex_unlock (&mymutex);
+\&
+\& ev_async_send (EV_DEFAULT_ &mysig);
+\& }
+\&
+\& static void
+\& mysig_cb (EV_P_ ev_async *w, int revents)
+\& {
+\& pthread_mutex_lock (&mymutex);
+\&
+\& while (queue_get (&data))
+\& process (data);
+\&
+\& pthread_mutex_unlock (&mymutex);
+\& }
+.Ve
+.PP
+\fIWatcher-Specific Functions and Data Members\fR
+.IX Subsection "Watcher-Specific Functions and Data Members"
+.IP "ev_async_init (ev_async *, callback)" 4
+.IX Item "ev_async_init (ev_async *, callback)"
+Initialises and configures the async watcher \- it has no parameters of any
+kind. There is a \f(CW\*(C`ev_async_set\*(C'\fR macro, but using it is utterly pointless,
+trust me.
+.IP "ev_async_send (loop, ev_async *)" 4
+.IX Item "ev_async_send (loop, ev_async *)"
+Sends/signals/activates the given \f(CW\*(C`ev_async\*(C'\fR watcher, that is, feeds
+an \f(CW\*(C`EV_ASYNC\*(C'\fR event on the watcher into the event loop, and instantly
+returns.
+.Sp
+Unlike \f(CW\*(C`ev_feed_event\*(C'\fR, this call is safe to do from other threads,
+signal or similar contexts (see the discussion of \f(CW\*(C`EV_ATOMIC_T\*(C'\fR in the
+embedding section below on what exactly this means).
+.Sp
+Note that, as with other watchers in libev, multiple events might get
+compressed into a single callback invocation (another way to look at this
+is that \f(CW\*(C`ev_async\*(C'\fR watchers are level-triggered, set on \f(CW\*(C`ev_async_send\*(C'\fR,
+reset when the event loop detects that).
+.Sp
+This call incurs the overhead of a system call only once per event loop
+iteration, so while the overhead might be noticeable, it doesn't apply to
+repeated calls to \f(CW\*(C`ev_async_send\*(C'\fR for the same event loop.
+.IP "bool = ev_async_pending (ev_async *)" 4
+.IX Item "bool = ev_async_pending (ev_async *)"
+Returns a non-zero value when \f(CW\*(C`ev_async_send\*(C'\fR has been called on the
+watcher but the event has not yet been processed (or even noted) by the
+event loop.
+.Sp
+\&\f(CW\*(C`ev_async_send\*(C'\fR sets a flag in the watcher and wakes up the loop. When
+the loop iterates next and checks for the watcher to have become active,
+it will reset the flag again. \f(CW\*(C`ev_async_pending\*(C'\fR can be used to very
+quickly check whether invoking the loop might be a good idea.
+.Sp
+Not that this does \fInot\fR check whether the watcher itself is pending,
+only whether it has been requested to make this watcher pending: there
+is a time window between the event loop checking and resetting the async
+notification, and the callback being invoked.
+.SH "OTHER FUNCTIONS"
+.IX Header "OTHER FUNCTIONS"
+There are some other functions of possible interest. Described. Here. Now.
+.IP "ev_once (loop, int fd, int events, ev_tstamp timeout, callback)" 4
+.IX Item "ev_once (loop, int fd, int events, ev_tstamp timeout, callback)"
+This function combines a simple timer and an I/O watcher, calls your
+callback on whichever event happens first and automatically stops both
+watchers. This is useful if you want to wait for a single event on an fd
+or timeout without having to allocate/configure/start/stop/free one or
+more watchers yourself.
+.Sp
+If \f(CW\*(C`fd\*(C'\fR is less than 0, then no I/O watcher will be started and the
+\&\f(CW\*(C`events\*(C'\fR argument is being ignored. Otherwise, an \f(CW\*(C`ev_io\*(C'\fR watcher for
+the given \f(CW\*(C`fd\*(C'\fR and \f(CW\*(C`events\*(C'\fR set will be created and started.
+.Sp
+If \f(CW\*(C`timeout\*(C'\fR is less than 0, then no timeout watcher will be
+started. Otherwise an \f(CW\*(C`ev_timer\*(C'\fR watcher with after = \f(CW\*(C`timeout\*(C'\fR (and
+repeat = 0) will be started. \f(CW0\fR is a valid timeout.
+.Sp
+The callback has the type \f(CW\*(C`void (*cb)(int revents, void *arg)\*(C'\fR and is
+passed an \f(CW\*(C`revents\*(C'\fR set like normal event callbacks (a combination of
+\&\f(CW\*(C`EV_ERROR\*(C'\fR, \f(CW\*(C`EV_READ\*(C'\fR, \f(CW\*(C`EV_WRITE\*(C'\fR or \f(CW\*(C`EV_TIMER\*(C'\fR) and the \f(CW\*(C`arg\*(C'\fR
+value passed to \f(CW\*(C`ev_once\*(C'\fR. Note that it is possible to receive \fIboth\fR
+a timeout and an io event at the same time \- you probably should give io
+events precedence.
+.Sp
+Example: wait up to ten seconds for data to appear on \s-1STDIN_FILENO\s0.
+.Sp
+.Vb 7
+\& static void stdin_ready (int revents, void *arg)
+\& {
+\& if (revents & EV_READ)
+\& /* stdin might have data for us, joy! */;
+\& else if (revents & EV_TIMER)
+\& /* doh, nothing entered */;
+\& }
+\&
+\& ev_once (STDIN_FILENO, EV_READ, 10., stdin_ready, 0);
+.Ve
+.IP "ev_feed_fd_event (loop, int fd, int revents)" 4
+.IX Item "ev_feed_fd_event (loop, int fd, int revents)"
+Feed an event on the given fd, as if a file descriptor backend detected
+the given events it.
+.IP "ev_feed_signal_event (loop, int signum)" 4
+.IX Item "ev_feed_signal_event (loop, int signum)"
+Feed an event as if the given signal occurred. See also \f(CW\*(C`ev_feed_signal\*(C'\fR,
+which is async-safe.
+.SH "COMMON OR USEFUL IDIOMS (OR BOTH)"
+.IX Header "COMMON OR USEFUL IDIOMS (OR BOTH)"
+This section explains some common idioms that are not immediately
+obvious. Note that examples are sprinkled over the whole manual, and this
+section only contains stuff that wouldn't fit anywhere else.
+.SS "\s-1ASSOCIATING\s0 \s-1CUSTOM\s0 \s-1DATA\s0 \s-1WITH\s0 A \s-1WATCHER\s0"
+.IX Subsection "ASSOCIATING CUSTOM DATA WITH A WATCHER"
+Each watcher has, by default, a \f(CW\*(C`void *data\*(C'\fR member that you can read
+or modify at any time: libev will completely ignore it. This can be used
+to associate arbitrary data with your watcher. If you need more data and
+don't want to allocate memory separately and store a pointer to it in that
+data member, you can also \*(L"subclass\*(R" the watcher type and provide your own
+data:
+.PP
+.Vb 7
+\& struct my_io
+\& {
+\& ev_io io;
+\& int otherfd;
+\& void *somedata;
+\& struct whatever *mostinteresting;
+\& };
+\&
+\& ...
+\& struct my_io w;
+\& ev_io_init (&w.io, my_cb, fd, EV_READ);
+.Ve
+.PP
+And since your callback will be called with a pointer to the watcher, you
+can cast it back to your own type:
+.PP
+.Vb 5
+\& static void my_cb (struct ev_loop *loop, ev_io *w_, int revents)
+\& {
+\& struct my_io *w = (struct my_io *)w_;
+\& ...
+\& }
+.Ve
+.PP
+More interesting and less C\-conformant ways of casting your callback
+function type instead have been omitted.
+.SS "\s-1BUILDING\s0 \s-1YOUR\s0 \s-1OWN\s0 \s-1COMPOSITE\s0 \s-1WATCHERS\s0"
+.IX Subsection "BUILDING YOUR OWN COMPOSITE WATCHERS"
+Another common scenario is to use some data structure with multiple
+embedded watchers, in effect creating your own watcher that combines
+multiple libev event sources into one \*(L"super-watcher\*(R":
+.PP
+.Vb 6
+\& struct my_biggy
+\& {
+\& int some_data;
+\& ev_timer t1;
+\& ev_timer t2;
+\& }
+.Ve
+.PP
+In this case getting the pointer to \f(CW\*(C`my_biggy\*(C'\fR is a bit more
+complicated: Either you store the address of your \f(CW\*(C`my_biggy\*(C'\fR struct in
+the \f(CW\*(C`data\*(C'\fR member of the watcher (for woozies or \*(C+ coders), or you need
+to use some pointer arithmetic using \f(CW\*(C`offsetof\*(C'\fR inside your watchers (for
+real programmers):
+.PP
+.Vb 1
+\& #include <stddef.h>
+\&
+\& static void
+\& t1_cb (EV_P_ ev_timer *w, int revents)
+\& {
+\& struct my_biggy big = (struct my_biggy *)
+\& (((char *)w) \- offsetof (struct my_biggy, t1));
+\& }
+\&
+\& static void
+\& t2_cb (EV_P_ ev_timer *w, int revents)
+\& {
+\& struct my_biggy big = (struct my_biggy *)
+\& (((char *)w) \- offsetof (struct my_biggy, t2));
+\& }
+.Ve
+.SS "\s-1MODEL/NESTED\s0 \s-1EVENT\s0 \s-1LOOP\s0 \s-1INVOCATIONS\s0 \s-1AND\s0 \s-1EXIT\s0 \s-1CONDITIONS\s0"
+.IX Subsection "MODEL/NESTED EVENT LOOP INVOCATIONS AND EXIT CONDITIONS"
+Often (especially in \s-1GUI\s0 toolkits) there are places where you have
+\&\fImodal\fR interaction, which is most easily implemented by recursively
+invoking \f(CW\*(C`ev_run\*(C'\fR.
+.PP
+This brings the problem of exiting \- a callback might want to finish the
+main \f(CW\*(C`ev_run\*(C'\fR call, but not the nested one (e.g. user clicked \*(L"Quit\*(R", but
+a modal \*(L"Are you sure?\*(R" dialog is still waiting), or just the nested one
+and not the main one (e.g. user clocked \*(L"Ok\*(R" in a modal dialog), or some
+other combination: In these cases, \f(CW\*(C`ev_break\*(C'\fR will not work alone.
+.PP
+The solution is to maintain \*(L"break this loop\*(R" variable for each \f(CW\*(C`ev_run\*(C'\fR
+invocation, and use a loop around \f(CW\*(C`ev_run\*(C'\fR until the condition is
+triggered, using \f(CW\*(C`EVRUN_ONCE\*(C'\fR:
+.PP
+.Vb 2
+\& // main loop
+\& int exit_main_loop = 0;
+\&
+\& while (!exit_main_loop)
+\& ev_run (EV_DEFAULT_ EVRUN_ONCE);
+\&
+\& // in a model watcher
+\& int exit_nested_loop = 0;
+\&
+\& while (!exit_nested_loop)
+\& ev_run (EV_A_ EVRUN_ONCE);
+.Ve
+.PP
+To exit from any of these loops, just set the corresponding exit variable:
+.PP
+.Vb 2
+\& // exit modal loop
+\& exit_nested_loop = 1;
+\&
+\& // exit main program, after modal loop is finished
+\& exit_main_loop = 1;
+\&
+\& // exit both
+\& exit_main_loop = exit_nested_loop = 1;
+.Ve
+.SS "\s-1THREAD\s0 \s-1LOCKING\s0 \s-1EXAMPLE\s0"
+.IX Subsection "THREAD LOCKING EXAMPLE"
+Here is a fictitious example of how to run an event loop in a different
+thread from where callbacks are being invoked and watchers are
+created/added/removed.
+.PP
+For a real-world example, see the \f(CW\*(C`EV::Loop::Async\*(C'\fR perl module,
+which uses exactly this technique (which is suited for many high-level
+languages).
+.PP
+The example uses a pthread mutex to protect the loop data, a condition
+variable to wait for callback invocations, an async watcher to notify the
+event loop thread and an unspecified mechanism to wake up the main thread.
+.PP
+First, you need to associate some data with the event loop:
+.PP
+.Vb 6
+\& typedef struct {
+\& mutex_t lock; /* global loop lock */
+\& ev_async async_w;
+\& thread_t tid;
+\& cond_t invoke_cv;
+\& } userdata;
+\&
+\& void prepare_loop (EV_P)
+\& {
+\& // for simplicity, we use a static userdata struct.
+\& static userdata u;
+\&
+\& ev_async_init (&u\->async_w, async_cb);
+\& ev_async_start (EV_A_ &u\->async_w);
+\&
+\& pthread_mutex_init (&u\->lock, 0);
+\& pthread_cond_init (&u\->invoke_cv, 0);
+\&
+\& // now associate this with the loop
+\& ev_set_userdata (EV_A_ u);
+\& ev_set_invoke_pending_cb (EV_A_ l_invoke);
+\& ev_set_loop_release_cb (EV_A_ l_release, l_acquire);
+\&
+\& // then create the thread running ev_run
+\& pthread_create (&u\->tid, 0, l_run, EV_A);
+\& }
+.Ve
+.PP
+The callback for the \f(CW\*(C`ev_async\*(C'\fR watcher does nothing: the watcher is used
+solely to wake up the event loop so it takes notice of any new watchers
+that might have been added:
+.PP
+.Vb 5
+\& static void
+\& async_cb (EV_P_ ev_async *w, int revents)
+\& {
+\& // just used for the side effects
+\& }
+.Ve
+.PP
+The \f(CW\*(C`l_release\*(C'\fR and \f(CW\*(C`l_acquire\*(C'\fR callbacks simply unlock/lock the mutex
+protecting the loop data, respectively.
+.PP
+.Vb 6
+\& static void
+\& l_release (EV_P)
+\& {
+\& userdata *u = ev_userdata (EV_A);
+\& pthread_mutex_unlock (&u\->lock);
+\& }
+\&
+\& static void
+\& l_acquire (EV_P)
+\& {
+\& userdata *u = ev_userdata (EV_A);
+\& pthread_mutex_lock (&u\->lock);
+\& }
+.Ve
+.PP
+The event loop thread first acquires the mutex, and then jumps straight
+into \f(CW\*(C`ev_run\*(C'\fR:
+.PP
+.Vb 4
+\& void *
+\& l_run (void *thr_arg)
+\& {
+\& struct ev_loop *loop = (struct ev_loop *)thr_arg;
+\&
+\& l_acquire (EV_A);
+\& pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
+\& ev_run (EV_A_ 0);
+\& l_release (EV_A);
+\&
+\& return 0;
+\& }
+.Ve
+.PP
+Instead of invoking all pending watchers, the \f(CW\*(C`l_invoke\*(C'\fR callback will
+signal the main thread via some unspecified mechanism (signals? pipe
+writes? \f(CW\*(C`Async::Interrupt\*(C'\fR?) and then waits until all pending watchers
+have been called (in a while loop because a) spurious wakeups are possible
+and b) skipping inter-thread-communication when there are no pending
+watchers is very beneficial):
+.PP
+.Vb 4
+\& static void
+\& l_invoke (EV_P)
+\& {
+\& userdata *u = ev_userdata (EV_A);
+\&
+\& while (ev_pending_count (EV_A))
+\& {
+\& wake_up_other_thread_in_some_magic_or_not_so_magic_way ();
+\& pthread_cond_wait (&u\->invoke_cv, &u\->lock);
+\& }
+\& }
+.Ve
+.PP
+Now, whenever the main thread gets told to invoke pending watchers, it
+will grab the lock, call \f(CW\*(C`ev_invoke_pending\*(C'\fR and then signal the loop
+thread to continue:
+.PP
+.Vb 4
+\& static void
+\& real_invoke_pending (EV_P)
+\& {
+\& userdata *u = ev_userdata (EV_A);
+\&
+\& pthread_mutex_lock (&u\->lock);
+\& ev_invoke_pending (EV_A);
+\& pthread_cond_signal (&u\->invoke_cv);
+\& pthread_mutex_unlock (&u\->lock);
+\& }
+.Ve
+.PP
+Whenever you want to start/stop a watcher or do other modifications to an
+event loop, you will now have to lock:
+.PP
+.Vb 2
+\& ev_timer timeout_watcher;
+\& userdata *u = ev_userdata (EV_A);
+\&
+\& ev_timer_init (&timeout_watcher, timeout_cb, 5.5, 0.);
+\&
+\& pthread_mutex_lock (&u\->lock);
+\& ev_timer_start (EV_A_ &timeout_watcher);
+\& ev_async_send (EV_A_ &u\->async_w);
+\& pthread_mutex_unlock (&u\->lock);
+.Ve
+.PP
+Note that sending the \f(CW\*(C`ev_async\*(C'\fR watcher is required because otherwise
+an event loop currently blocking in the kernel will have no knowledge
+about the newly added timer. By waking up the loop it will pick up any new
+watchers in the next event loop iteration.
+.SS "\s-1THREADS\s0, \s-1COROUTINES\s0, \s-1CONTINUATIONS\s0, \s-1QUEUES\s0... \s-1INSTEAD\s0 \s-1OF\s0 \s-1CALLBACKS\s0"
+.IX Subsection "THREADS, COROUTINES, CONTINUATIONS, QUEUES... INSTEAD OF CALLBACKS"
+While the overhead of a callback that e.g. schedules a thread is small, it
+is still an overhead. If you embed libev, and your main usage is with some
+kind of threads or coroutines, you might want to customise libev so that
+doesn't need callbacks anymore.
+.PP
+Imagine you have coroutines that you can switch to using a function
+\&\f(CW\*(C`switch_to (coro)\*(C'\fR, that libev runs in a coroutine called \f(CW\*(C`libev_coro\*(C'\fR
+and that due to some magic, the currently active coroutine is stored in a
+global called \f(CW\*(C`current_coro\*(C'\fR. Then you can build your own \*(L"wait for libev
+event\*(R" primitive by changing \f(CW\*(C`EV_CB_DECLARE\*(C'\fR and \f(CW\*(C`EV_CB_INVOKE\*(C'\fR (note
+the differing \f(CW\*(C`;\*(C'\fR conventions):
+.PP
+.Vb 2
+\& #define EV_CB_DECLARE(type) struct my_coro *cb;
+\& #define EV_CB_INVOKE(watcher) switch_to ((watcher)\->cb)
+.Ve
+.PP
+That means instead of having a C callback function, you store the
+coroutine to switch to in each watcher, and instead of having libev call
+your callback, you instead have it switch to that coroutine.
+.PP
+A coroutine might now wait for an event with a function called
+\&\f(CW\*(C`wait_for_event\*(C'\fR. (the watcher needs to be started, as always, but it doesn't
+matter when, or whether the watcher is active or not when this function is
+called):
+.PP
+.Vb 6
+\& void
+\& wait_for_event (ev_watcher *w)
+\& {
+\& ev_cb_set (w) = current_coro;
+\& switch_to (libev_coro);
+\& }
+.Ve
+.PP
+That basically suspends the coroutine inside \f(CW\*(C`wait_for_event\*(C'\fR and
+continues the libev coroutine, which, when appropriate, switches back to
+this or any other coroutine. I am sure if you sue this your own :)
+.PP
+You can do similar tricks if you have, say, threads with an event queue \-
+instead of storing a coroutine, you store the queue object and instead of
+switching to a coroutine, you push the watcher onto the queue and notify
+any waiters.
+.PP
+To embed libev, see \s-1EMBEDDING\s0, but in short, it's easiest to create two
+files, \fImy_ev.h\fR and \fImy_ev.c\fR that include the respective libev files:
+.PP
+.Vb 4
+\& // my_ev.h
+\& #define EV_CB_DECLARE(type) struct my_coro *cb;
+\& #define EV_CB_INVOKE(watcher) switch_to ((watcher)\->cb);
+\& #include "../libev/ev.h"
+\&
+\& // my_ev.c
+\& #define EV_H "my_ev.h"
+\& #include "../libev/ev.c"
+.Ve
+.PP
+And then use \fImy_ev.h\fR when you would normally use \fIev.h\fR, and compile
+\&\fImy_ev.c\fR into your project. When properly specifying include paths, you
+can even use \fIev.h\fR as header file name directly.
+.SH "LIBEVENT EMULATION"
+.IX Header "LIBEVENT EMULATION"
+Libev offers a compatibility emulation layer for libevent. It cannot
+emulate the internals of libevent, so here are some usage hints:
+.IP "\(bu" 4
+Only the libevent\-1.4.1\-beta \s-1API\s0 is being emulated.
+.Sp
+This was the newest libevent version available when libev was implemented,
+and is still mostly unchanged in 2010.
+.IP "\(bu" 4
+Use it by including <event.h>, as usual.
+.IP "\(bu" 4
+The following members are fully supported: ev_base, ev_callback,
+ev_arg, ev_fd, ev_res, ev_events.
+.IP "\(bu" 4
+Avoid using ev_flags and the EVLIST_*\-macros, while it is
+maintained by libev, it does not work exactly the same way as in libevent (consider
+it a private \s-1API\s0).
+.IP "\(bu" 4
+Priorities are not currently supported. Initialising priorities
+will fail and all watchers will have the same priority, even though there
+is an ev_pri field.
+.IP "\(bu" 4
+In libevent, the last base created gets the signals, in libev, the
+base that registered the signal gets the signals.
+.IP "\(bu" 4
+Other members are not supported.
+.IP "\(bu" 4
+The libev emulation is \fInot\fR \s-1ABI\s0 compatible to libevent, you need
+to use the libev header file and library.
+.SH "\*(C+ SUPPORT"
+.IX Header " SUPPORT"
+Libev comes with some simplistic wrapper classes for \*(C+ that mainly allow
+you to use some convenience methods to start/stop watchers and also change
+the callback model to a model using method callbacks on objects.
+.PP
+To use it,
+.PP
+.Vb 1
+\& #include <ev++.h>
+.Ve
+.PP
+This automatically includes \fIev.h\fR and puts all of its definitions (many
+of them macros) into the global namespace. All \*(C+ specific things are
+put into the \f(CW\*(C`ev\*(C'\fR namespace. It should support all the same embedding
+options as \fIev.h\fR, most notably \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR.
+.PP
+Care has been taken to keep the overhead low. The only data member the \*(C+
+classes add (compared to plain C\-style watchers) is the event loop pointer
+that the watcher is associated with (or no additional members at all if
+you disable \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR when embedding libev).
+.PP
+Currently, functions, static and non-static member functions and classes
+with \f(CW\*(C`operator ()\*(C'\fR can be used as callbacks. Other types should be easy
+to add as long as they only need one additional pointer for context. If
+you need support for other types of functors please contact the author
+(preferably after implementing it).
+.PP
+Here is a list of things available in the \f(CW\*(C`ev\*(C'\fR namespace:
+.ie n .IP """ev::READ"", ""ev::WRITE"" etc." 4
+.el .IP "\f(CWev::READ\fR, \f(CWev::WRITE\fR etc." 4
+.IX Item "ev::READ, ev::WRITE etc."
+These are just enum values with the same values as the \f(CW\*(C`EV_READ\*(C'\fR etc.
+macros from \fIev.h\fR.
+.ie n .IP """ev::tstamp"", ""ev::now""" 4
+.el .IP "\f(CWev::tstamp\fR, \f(CWev::now\fR" 4
+.IX Item "ev::tstamp, ev::now"
+Aliases to the same types/functions as with the \f(CW\*(C`ev_\*(C'\fR prefix.
+.ie n .IP """ev::io"", ""ev::timer"", ""ev::periodic"", ""ev::idle"", ""ev::sig"" etc." 4
+.el .IP "\f(CWev::io\fR, \f(CWev::timer\fR, \f(CWev::periodic\fR, \f(CWev::idle\fR, \f(CWev::sig\fR etc." 4
+.IX Item "ev::io, ev::timer, ev::periodic, ev::idle, ev::sig etc."
+For each \f(CW\*(C`ev_TYPE\*(C'\fR watcher in \fIev.h\fR there is a corresponding class of
+the same name in the \f(CW\*(C`ev\*(C'\fR namespace, with the exception of \f(CW\*(C`ev_signal\*(C'\fR
+which is called \f(CW\*(C`ev::sig\*(C'\fR to avoid clashes with the \f(CW\*(C`signal\*(C'\fR macro
+defines by many implementations.
+.Sp
+All of those classes have these methods:
+.RS 4
+.IP "ev::TYPE::TYPE ()" 4
+.IX Item "ev::TYPE::TYPE ()"
+.PD 0
+.IP "ev::TYPE::TYPE (loop)" 4
+.IX Item "ev::TYPE::TYPE (loop)"
+.IP "ev::TYPE::~TYPE" 4
+.IX Item "ev::TYPE::~TYPE"
+.PD
+The constructor (optionally) takes an event loop to associate the watcher
+with. If it is omitted, it will use \f(CW\*(C`EV_DEFAULT\*(C'\fR.
+.Sp
+The constructor calls \f(CW\*(C`ev_init\*(C'\fR for you, which means you have to call the
+\&\f(CW\*(C`set\*(C'\fR method before starting it.
+.Sp
+It will not set a callback, however: You have to call the templated \f(CW\*(C`set\*(C'\fR
+method to set a callback before you can start the watcher.
+.Sp
+(The reason why you have to use a method is a limitation in \*(C+ which does
+not allow explicit template arguments for constructors).
+.Sp
+The destructor automatically stops the watcher if it is active.
+.IP "w\->set<class, &class::method> (object *)" 4
+.IX Item "w->set<class, &class::method> (object *)"
+This method sets the callback method to call. The method has to have a
+signature of \f(CW\*(C`void (*)(ev_TYPE &, int)\*(C'\fR, it receives the watcher as
+first argument and the \f(CW\*(C`revents\*(C'\fR as second. The object must be given as
+parameter and is stored in the \f(CW\*(C`data\*(C'\fR member of the watcher.
+.Sp
+This method synthesizes efficient thunking code to call your method from
+the C callback that libev requires. If your compiler can inline your
+callback (i.e. it is visible to it at the place of the \f(CW\*(C`set\*(C'\fR call and
+your compiler is good :), then the method will be fully inlined into the
+thunking function, making it as fast as a direct C callback.
+.Sp
+Example: simple class declaration and watcher initialisation
+.Sp
+.Vb 4
+\& struct myclass
+\& {
+\& void io_cb (ev::io &w, int revents) { }
+\& }
+\&
+\& myclass obj;
+\& ev::io iow;
+\& iow.set <myclass, &myclass::io_cb> (&obj);
+.Ve
+.IP "w\->set (object *)" 4
+.IX Item "w->set (object *)"
+This is a variation of a method callback \- leaving out the method to call
+will default the method to \f(CW\*(C`operator ()\*(C'\fR, which makes it possible to use
+functor objects without having to manually specify the \f(CW\*(C`operator ()\*(C'\fR all
+the time. Incidentally, you can then also leave out the template argument
+list.
+.Sp
+The \f(CW\*(C`operator ()\*(C'\fR method prototype must be \f(CW\*(C`void operator ()(watcher &w,
+int revents)\*(C'\fR.
+.Sp
+See the method\-\f(CW\*(C`set\*(C'\fR above for more details.
+.Sp
+Example: use a functor object as callback.
+.Sp
+.Vb 7
+\& struct myfunctor
+\& {
+\& void operator() (ev::io &w, int revents)
+\& {
+\& ...
+\& }
+\& }
+\&
+\& myfunctor f;
+\&
+\& ev::io w;
+\& w.set (&f);
+.Ve
+.IP "w\->set<function> (void *data = 0)" 4
+.IX Item "w->set<function> (void *data = 0)"
+Also sets a callback, but uses a static method or plain function as
+callback. The optional \f(CW\*(C`data\*(C'\fR argument will be stored in the watcher's
+\&\f(CW\*(C`data\*(C'\fR member and is free for you to use.
+.Sp
+The prototype of the \f(CW\*(C`function\*(C'\fR must be \f(CW\*(C`void (*)(ev::TYPE &w, int)\*(C'\fR.
+.Sp
+See the method\-\f(CW\*(C`set\*(C'\fR above for more details.
+.Sp
+Example: Use a plain function as callback.
+.Sp
+.Vb 2
+\& static void io_cb (ev::io &w, int revents) { }
+\& iow.set <io_cb> ();
+.Ve
+.IP "w\->set (loop)" 4
+.IX Item "w->set (loop)"
+Associates a different \f(CW\*(C`struct ev_loop\*(C'\fR with this watcher. You can only
+do this when the watcher is inactive (and not pending either).
+.IP "w\->set ([arguments])" 4
+.IX Item "w->set ([arguments])"
+Basically the same as \f(CW\*(C`ev_TYPE_set\*(C'\fR, with the same arguments. Either this
+method or a suitable start method must be called at least once. Unlike the
+C counterpart, an active watcher gets automatically stopped and restarted
+when reconfiguring it with this method.
+.IP "w\->start ()" 4
+.IX Item "w->start ()"
+Starts the watcher. Note that there is no \f(CW\*(C`loop\*(C'\fR argument, as the
+constructor already stores the event loop.
+.IP "w\->start ([arguments])" 4
+.IX Item "w->start ([arguments])"
+Instead of calling \f(CW\*(C`set\*(C'\fR and \f(CW\*(C`start\*(C'\fR methods separately, it is often
+convenient to wrap them in one call. Uses the same type of arguments as
+the configure \f(CW\*(C`set\*(C'\fR method of the watcher.
+.IP "w\->stop ()" 4
+.IX Item "w->stop ()"
+Stops the watcher if it is active. Again, no \f(CW\*(C`loop\*(C'\fR argument.
+.ie n .IP "w\->again () (""ev::timer"", ""ev::periodic"" only)" 4
+.el .IP "w\->again () (\f(CWev::timer\fR, \f(CWev::periodic\fR only)" 4
+.IX Item "w->again () (ev::timer, ev::periodic only)"
+For \f(CW\*(C`ev::timer\*(C'\fR and \f(CW\*(C`ev::periodic\*(C'\fR, this invokes the corresponding
+\&\f(CW\*(C`ev_TYPE_again\*(C'\fR function.
+.ie n .IP "w\->sweep () (""ev::embed"" only)" 4
+.el .IP "w\->sweep () (\f(CWev::embed\fR only)" 4
+.IX Item "w->sweep () (ev::embed only)"
+Invokes \f(CW\*(C`ev_embed_sweep\*(C'\fR.
+.ie n .IP "w\->update () (""ev::stat"" only)" 4
+.el .IP "w\->update () (\f(CWev::stat\fR only)" 4
+.IX Item "w->update () (ev::stat only)"
+Invokes \f(CW\*(C`ev_stat_stat\*(C'\fR.
+.RE
+.RS 4
+.RE
+.PP
+Example: Define a class with two I/O and idle watchers, start the I/O
+watchers in the constructor.
+.PP
+.Vb 5
+\& class myclass
+\& {
+\& ev::io io ; void io_cb (ev::io &w, int revents);
+\& ev::io2 io2 ; void io2_cb (ev::io &w, int revents);
+\& ev::idle idle; void idle_cb (ev::idle &w, int revents);
+\&
+\& myclass (int fd)
+\& {
+\& io .set <myclass, &myclass::io_cb > (this);
+\& io2 .set <myclass, &myclass::io2_cb > (this);
+\& idle.set <myclass, &myclass::idle_cb> (this);
+\&
+\& io.set (fd, ev::WRITE); // configure the watcher
+\& io.start (); // start it whenever convenient
+\&
+\& io2.start (fd, ev::READ); // set + start in one call
+\& }
+\& };
+.Ve
+.SH "OTHER LANGUAGE BINDINGS"
+.IX Header "OTHER LANGUAGE BINDINGS"
+Libev does not offer other language bindings itself, but bindings for a
+number of languages exist in the form of third-party packages. If you know
+any interesting language binding in addition to the ones listed here, drop
+me a note.
+.IP "Perl" 4
+.IX Item "Perl"
+The \s-1EV\s0 module implements the full libev \s-1API\s0 and is actually used to test
+libev. \s-1EV\s0 is developed together with libev. Apart from the \s-1EV\s0 core module,
+there are additional modules that implement libev-compatible interfaces
+to \f(CW\*(C`libadns\*(C'\fR (\f(CW\*(C`EV::ADNS\*(C'\fR, but \f(CW\*(C`AnyEvent::DNS\*(C'\fR is preferred nowadays),
+\&\f(CW\*(C`Net::SNMP\*(C'\fR (\f(CW\*(C`Net::SNMP::EV\*(C'\fR) and the \f(CW\*(C`libglib\*(C'\fR event core (\f(CW\*(C`Glib::EV\*(C'\fR
+and \f(CW\*(C`EV::Glib\*(C'\fR).
+.Sp
+It can be found and installed via \s-1CPAN\s0, its homepage is at
+<http://software.schmorp.de/pkg/EV>.
+.IP "Python" 4
+.IX Item "Python"
+Python bindings can be found at <http://code.google.com/p/pyev/>. It
+seems to be quite complete and well-documented.
+.IP "Ruby" 4
+.IX Item "Ruby"
+Tony Arcieri has written a ruby extension that offers access to a subset
+of the libev \s-1API\s0 and adds file handle abstractions, asynchronous \s-1DNS\s0 and
+more on top of it. It can be found via gem servers. Its homepage is at
+<http://rev.rubyforge.org/>.
+.Sp
+Roger Pack reports that using the link order \f(CW\*(C`\-lws2_32 \-lmsvcrt\-ruby\-190\*(C'\fR
+makes rev work even on mingw.
+.IP "Haskell" 4
+.IX Item "Haskell"
+A haskell binding to libev is available at
+<http://hackage.haskell.org/cgi\-bin/hackage\-scripts/package/hlibev>.
+.IP "D" 4
+.IX Item "D"
+Leandro Lucarella has written a D language binding (\fIev.d\fR) for libev, to
+be found at <http://proj.llucax.com.ar/wiki/evd>.
+.IP "Ocaml" 4
+.IX Item "Ocaml"
+Erkki Seppala has written Ocaml bindings for libev, to be found at
+<http://modeemi.cs.tut.fi/~flux/software/ocaml\-ev/>.
+.IP "Lua" 4
+.IX Item "Lua"
+Brian Maher has written a partial interface to libev for lua (at the
+time of this writing, only \f(CW\*(C`ev_io\*(C'\fR and \f(CW\*(C`ev_timer\*(C'\fR), to be found at
+<http://github.com/brimworks/lua\-ev>.
+.SH "MACRO MAGIC"
+.IX Header "MACRO MAGIC"
+Libev can be compiled with a variety of options, the most fundamental
+of which is \f(CW\*(C`EV_MULTIPLICITY\*(C'\fR. This option determines whether (most)
+functions and callbacks have an initial \f(CW\*(C`struct ev_loop *\*(C'\fR argument.
+.PP
+To make it easier to write programs that cope with either variant, the
+following macros are defined:
+.ie n .IP """EV_A"", ""EV_A_""" 4
+.el .IP "\f(CWEV_A\fR, \f(CWEV_A_\fR" 4
+.IX Item "EV_A, EV_A_"
+This provides the loop \fIargument\fR for functions, if one is required (\*(L"ev
+loop argument\*(R"). The \f(CW\*(C`EV_A\*(C'\fR form is used when this is the sole argument,
+\&\f(CW\*(C`EV_A_\*(C'\fR is used when other arguments are following. Example:
+.Sp
+.Vb 3
+\& ev_unref (EV_A);
+\& ev_timer_add (EV_A_ watcher);
+\& ev_run (EV_A_ 0);
+.Ve
+.Sp
+It assumes the variable \f(CW\*(C`loop\*(C'\fR of type \f(CW\*(C`struct ev_loop *\*(C'\fR is in scope,
+which is often provided by the following macro.
+.ie n .IP """EV_P"", ""EV_P_""" 4
+.el .IP "\f(CWEV_P\fR, \f(CWEV_P_\fR" 4
+.IX Item "EV_P, EV_P_"
+This provides the loop \fIparameter\fR for functions, if one is required (\*(L"ev
+loop parameter\*(R"). The \f(CW\*(C`EV_P\*(C'\fR form is used when this is the sole parameter,
+\&\f(CW\*(C`EV_P_\*(C'\fR is used when other parameters are following. Example:
+.Sp
+.Vb 2
+\& // this is how ev_unref is being declared
+\& static void ev_unref (EV_P);
+\&
+\& // this is how you can declare your typical callback
+\& static void cb (EV_P_ ev_timer *w, int revents)
+.Ve
+.Sp
+It declares a parameter \f(CW\*(C`loop\*(C'\fR of type \f(CW\*(C`struct ev_loop *\*(C'\fR, quite
+suitable for use with \f(CW\*(C`EV_A\*(C'\fR.
+.ie n .IP """EV_DEFAULT"", ""EV_DEFAULT_""" 4
+.el .IP "\f(CWEV_DEFAULT\fR, \f(CWEV_DEFAULT_\fR" 4
+.IX Item "EV_DEFAULT, EV_DEFAULT_"
+Similar to the other two macros, this gives you the value of the default
+loop, if multiple loops are supported (\*(L"ev loop default\*(R").
+.ie n .IP """EV_DEFAULT_UC"", ""EV_DEFAULT_UC_""" 4
+.el .IP "\f(CWEV_DEFAULT_UC\fR, \f(CWEV_DEFAULT_UC_\fR" 4
+.IX Item "EV_DEFAULT_UC, EV_DEFAULT_UC_"
+Usage identical to \f(CW\*(C`EV_DEFAULT\*(C'\fR and \f(CW\*(C`EV_DEFAULT_\*(C'\fR, but requires that the
+default loop has been initialised (\f(CW\*(C`UC\*(C'\fR == unchecked). Their behaviour
+is undefined when the default loop has not been initialised by a previous
+execution of \f(CW\*(C`EV_DEFAULT\*(C'\fR, \f(CW\*(C`EV_DEFAULT_\*(C'\fR or \f(CW\*(C`ev_default_init (...)\*(C'\fR.
+.Sp
+It is often prudent to use \f(CW\*(C`EV_DEFAULT\*(C'\fR when initialising the first
+watcher in a function but use \f(CW\*(C`EV_DEFAULT_UC\*(C'\fR afterwards.
+.PP
+Example: Declare and initialise a check watcher, utilising the above
+macros so it will work regardless of whether multiple loops are supported
+or not.
+.PP
+.Vb 5
+\& static void
+\& check_cb (EV_P_ ev_timer *w, int revents)
+\& {
+\& ev_check_stop (EV_A_ w);
+\& }
+\&
+\& ev_check check;
+\& ev_check_init (&check, check_cb);
+\& ev_check_start (EV_DEFAULT_ &check);
+\& ev_run (EV_DEFAULT_ 0);
+.Ve
+.SH "EMBEDDING"
+.IX Header "EMBEDDING"
+Libev can (and often is) directly embedded into host
+applications. Examples of applications that embed it include the Deliantra
+Game Server, the \s-1EV\s0 perl module, the \s-1GNU\s0 Virtual Private Ethernet (gvpe)
+and rxvt-unicode.
+.PP
+The goal is to enable you to just copy the necessary files into your
+source directory without having to change even a single line in them, so
+you can easily upgrade by simply copying (or having a checked-out copy of
+libev somewhere in your source tree).
+.SS "\s-1FILESETS\s0"
+.IX Subsection "FILESETS"
+Depending on what features you need you need to include one or more sets of files
+in your application.
+.PP
+\fI\s-1CORE\s0 \s-1EVENT\s0 \s-1LOOP\s0\fR
+.IX Subsection "CORE EVENT LOOP"
+.PP
+To include only the libev core (all the \f(CW\*(C`ev_*\*(C'\fR functions), with manual
+configuration (no autoconf):
+.PP
+.Vb 2
+\& #define EV_STANDALONE 1
+\& #include "ev.c"
+.Ve
+.PP
+This will automatically include \fIev.h\fR, too, and should be done in a
+single C source file only to provide the function implementations. To use
+it, do the same for \fIev.h\fR in all files wishing to use this \s-1API\s0 (best
+done by writing a wrapper around \fIev.h\fR that you can include instead and
+where you can put other configuration options):
+.PP
+.Vb 2
+\& #define EV_STANDALONE 1
+\& #include "ev.h"
+.Ve
+.PP
+Both header files and implementation files can be compiled with a \*(C+
+compiler (at least, that's a stated goal, and breakage will be treated
+as a bug).
+.PP
+You need the following files in your source tree, or in a directory
+in your include path (e.g. in libev/ when using \-Ilibev):
+.PP
+.Vb 4
+\& ev.h
+\& ev.c
+\& ev_vars.h
+\& ev_wrap.h
+\&
+\& ev_win32.c required on win32 platforms only
+\&
+\& ev_select.c only when select backend is enabled (which is enabled by default)
+\& ev_poll.c only when poll backend is enabled (disabled by default)
+\& ev_epoll.c only when the epoll backend is enabled (disabled by default)
+\& ev_kqueue.c only when the kqueue backend is enabled (disabled by default)
+\& ev_port.c only when the solaris port backend is enabled (disabled by default)
+.Ve
+.PP
+\&\fIev.c\fR includes the backend files directly when enabled, so you only need
+to compile this single file.
+.PP
+\fI\s-1LIBEVENT\s0 \s-1COMPATIBILITY\s0 \s-1API\s0\fR
+.IX Subsection "LIBEVENT COMPATIBILITY API"
+.PP
+To include the libevent compatibility \s-1API\s0, also include:
+.PP
+.Vb 1
+\& #include "event.c"
+.Ve
+.PP
+in the file including \fIev.c\fR, and:
+.PP
+.Vb 1
+\& #include "event.h"
+.Ve
+.PP
+in the files that want to use the libevent \s-1API\s0. This also includes \fIev.h\fR.
+.PP
+You need the following additional files for this:
+.PP
+.Vb 2
+\& event.h
+\& event.c
+.Ve
+.PP
+\fI\s-1AUTOCONF\s0 \s-1SUPPORT\s0\fR
+.IX Subsection "AUTOCONF SUPPORT"
+.PP
+Instead of using \f(CW\*(C`EV_STANDALONE=1\*(C'\fR and providing your configuration in
+whatever way you want, you can also \f(CW\*(C`m4_include([libev.m4])\*(C'\fR in your
+\&\fIconfigure.ac\fR and leave \f(CW\*(C`EV_STANDALONE\*(C'\fR undefined. \fIev.c\fR will then
+include \fIconfig.h\fR and configure itself accordingly.
+.PP
+For this of course you need the m4 file:
+.PP
+.Vb 1
+\& libev.m4
+.Ve
+.SS "\s-1PREPROCESSOR\s0 \s-1SYMBOLS/MACROS\s0"
+.IX Subsection "PREPROCESSOR SYMBOLS/MACROS"
+Libev can be configured via a variety of preprocessor symbols you have to
+define before including (or compiling) any of its files. The default in
+the absence of autoconf is documented for every option.
+.PP
+Symbols marked with \*(L"(h)\*(R" do not change the \s-1ABI\s0, and can have different
+values when compiling libev vs. including \fIev.h\fR, so it is permissible
+to redefine them before including \fIev.h\fR without breaking compatibility
+to a compiled library. All other symbols change the \s-1ABI\s0, which means all
+users of libev and the libev code itself must be compiled with compatible
+settings.
+.IP "\s-1EV_COMPAT3\s0 (h)" 4
+.IX Item "EV_COMPAT3 (h)"
+Backwards compatibility is a major concern for libev. This is why this
+release of libev comes with wrappers for the functions and symbols that
+have been renamed between libev version 3 and 4.
+.Sp
+You can disable these wrappers (to test compatibility with future
+versions) by defining \f(CW\*(C`EV_COMPAT3\*(C'\fR to \f(CW0\fR when compiling your
+sources. This has the additional advantage that you can drop the \f(CW\*(C`struct\*(C'\fR
+from \f(CW\*(C`struct ev_loop\*(C'\fR declarations, as libev will provide an \f(CW\*(C`ev_loop\*(C'\fR
+typedef in that case.
+.Sp
+In some future version, the default for \f(CW\*(C`EV_COMPAT3\*(C'\fR will become \f(CW0\fR,
+and in some even more future version the compatibility code will be
+removed completely.
+.IP "\s-1EV_STANDALONE\s0 (h)" 4
+.IX Item "EV_STANDALONE (h)"
+Must always be \f(CW1\fR if you do not use autoconf configuration, which
+keeps libev from including \fIconfig.h\fR, and it also defines dummy
+implementations for some libevent functions (such as logging, which is not
+supported). It will also not define any of the structs usually found in
+\&\fIevent.h\fR that are not directly supported by the libev core alone.
+.Sp
+In standalone mode, libev will still try to automatically deduce the
+configuration, but has to be more conservative.
+.IP "\s-1EV_USE_MONOTONIC\s0" 4
+.IX Item "EV_USE_MONOTONIC"
+If defined to be \f(CW1\fR, libev will try to detect the availability of the
+monotonic clock option at both compile time and runtime. Otherwise no
+use of the monotonic clock option will be attempted. If you enable this,
+you usually have to link against librt or something similar. Enabling it
+when the functionality isn't available is safe, though, although you have
+to make sure you link against any libraries where the \f(CW\*(C`clock_gettime\*(C'\fR
+function is hiding in (often \fI\-lrt\fR). See also \f(CW\*(C`EV_USE_CLOCK_SYSCALL\*(C'\fR.
+.IP "\s-1EV_USE_REALTIME\s0" 4
+.IX Item "EV_USE_REALTIME"
+If defined to be \f(CW1\fR, libev will try to detect the availability of the
+real-time clock option at compile time (and assume its availability
+at runtime if successful). Otherwise no use of the real-time clock
+option will be attempted. This effectively replaces \f(CW\*(C`gettimeofday\*(C'\fR
+by \f(CW\*(C`clock_get (CLOCK_REALTIME, ...)\*(C'\fR and will not normally affect
+correctness. See the note about libraries in the description of
+\&\f(CW\*(C`EV_USE_MONOTONIC\*(C'\fR, though. Defaults to the opposite value of
+\&\f(CW\*(C`EV_USE_CLOCK_SYSCALL\*(C'\fR.
+.IP "\s-1EV_USE_CLOCK_SYSCALL\s0" 4
+.IX Item "EV_USE_CLOCK_SYSCALL"
+If defined to be \f(CW1\fR, libev will try to use a direct syscall instead
+of calling the system-provided \f(CW\*(C`clock_gettime\*(C'\fR function. This option
+exists because on GNU/Linux, \f(CW\*(C`clock_gettime\*(C'\fR is in \f(CW\*(C`librt\*(C'\fR, but \f(CW\*(C`librt\*(C'\fR
+unconditionally pulls in \f(CW\*(C`libpthread\*(C'\fR, slowing down single-threaded
+programs needlessly. Using a direct syscall is slightly slower (in
+theory), because no optimised vdso implementation can be used, but avoids
+the pthread dependency. Defaults to \f(CW1\fR on GNU/Linux with glibc 2.x or
+higher, as it simplifies linking (no need for \f(CW\*(C`\-lrt\*(C'\fR).
+.IP "\s-1EV_USE_NANOSLEEP\s0" 4
+.IX Item "EV_USE_NANOSLEEP"
+If defined to be \f(CW1\fR, libev will assume that \f(CW\*(C`nanosleep ()\*(C'\fR is available
+and will use it for delays. Otherwise it will use \f(CW\*(C`select ()\*(C'\fR.
+.IP "\s-1EV_USE_EVENTFD\s0" 4
+.IX Item "EV_USE_EVENTFD"
+If defined to be \f(CW1\fR, then libev will assume that \f(CW\*(C`eventfd ()\*(C'\fR is
+available and will probe for kernel support at runtime. This will improve
+\&\f(CW\*(C`ev_signal\*(C'\fR and \f(CW\*(C`ev_async\*(C'\fR performance and reduce resource consumption.
+If undefined, it will be enabled if the headers indicate GNU/Linux + Glibc
+2.7 or newer, otherwise disabled.
+.IP "\s-1EV_USE_SELECT\s0" 4
+.IX Item "EV_USE_SELECT"
+If undefined or defined to be \f(CW1\fR, libev will compile in support for the
+\&\f(CW\*(C`select\*(C'\fR(2) backend. No attempt at auto-detection will be done: if no
+other method takes over, select will be it. Otherwise the select backend
+will not be compiled in.
+.IP "\s-1EV_SELECT_USE_FD_SET\s0" 4
+.IX Item "EV_SELECT_USE_FD_SET"
+If defined to \f(CW1\fR, then the select backend will use the system \f(CW\*(C`fd_set\*(C'\fR
+structure. This is useful if libev doesn't compile due to a missing
+\&\f(CW\*(C`NFDBITS\*(C'\fR or \f(CW\*(C`fd_mask\*(C'\fR definition or it mis-guesses the bitset layout
+on exotic systems. This usually limits the range of file descriptors to
+some low limit such as 1024 or might have other limitations (winsocket
+only allows 64 sockets). The \f(CW\*(C`FD_SETSIZE\*(C'\fR macro, set before compilation,
+configures the maximum size of the \f(CW\*(C`fd_set\*(C'\fR.
+.IP "\s-1EV_SELECT_IS_WINSOCKET\s0" 4
+.IX Item "EV_SELECT_IS_WINSOCKET"
+When defined to \f(CW1\fR, the select backend will assume that
+select/socket/connect etc. don't understand file descriptors but
+wants osf handles on win32 (this is the case when the select to
+be used is the winsock select). This means that it will call
+\&\f(CW\*(C`_get_osfhandle\*(C'\fR on the fd to convert it to an \s-1OS\s0 handle. Otherwise,
+it is assumed that all these functions actually work on fds, even
+on win32. Should not be defined on non\-win32 platforms.
+.IP "\s-1EV_FD_TO_WIN32_HANDLE\s0(fd)" 4
+.IX Item "EV_FD_TO_WIN32_HANDLE(fd)"
+If \f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR is enabled, then libev needs a way to map
+file descriptors to socket handles. When not defining this symbol (the
+default), then libev will call \f(CW\*(C`_get_osfhandle\*(C'\fR, which is usually
+correct. In some cases, programs use their own file descriptor management,
+in which case they can provide this function to map fds to socket handles.
+.IP "\s-1EV_WIN32_HANDLE_TO_FD\s0(handle)" 4
+.IX Item "EV_WIN32_HANDLE_TO_FD(handle)"
+If \f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR then libev maps handles to file descriptors
+using the standard \f(CW\*(C`_open_osfhandle\*(C'\fR function. For programs implementing
+their own fd to handle mapping, overwriting this function makes it easier
+to do so. This can be done by defining this macro to an appropriate value.
+.IP "\s-1EV_WIN32_CLOSE_FD\s0(fd)" 4
+.IX Item "EV_WIN32_CLOSE_FD(fd)"
+If programs implement their own fd to handle mapping on win32, then this
+macro can be used to override the \f(CW\*(C`close\*(C'\fR function, useful to unregister
+file descriptors again. Note that the replacement function has to close
+the underlying \s-1OS\s0 handle.
+.IP "\s-1EV_USE_POLL\s0" 4
+.IX Item "EV_USE_POLL"
+If defined to be \f(CW1\fR, libev will compile in support for the \f(CW\*(C`poll\*(C'\fR(2)
+backend. Otherwise it will be enabled on non\-win32 platforms. It
+takes precedence over select.
+.IP "\s-1EV_USE_EPOLL\s0" 4
+.IX Item "EV_USE_EPOLL"
+If defined to be \f(CW1\fR, libev will compile in support for the Linux
+\&\f(CW\*(C`epoll\*(C'\fR(7) backend. Its availability will be detected at runtime,
+otherwise another method will be used as fallback. This is the preferred
+backend for GNU/Linux systems. If undefined, it will be enabled if the
+headers indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled.
+.IP "\s-1EV_USE_KQUEUE\s0" 4
+.IX Item "EV_USE_KQUEUE"
+If defined to be \f(CW1\fR, libev will compile in support for the \s-1BSD\s0 style
+\&\f(CW\*(C`kqueue\*(C'\fR(2) backend. Its actual availability will be detected at runtime,
+otherwise another method will be used as fallback. This is the preferred
+backend for \s-1BSD\s0 and BSD-like systems, although on most BSDs kqueue only
+supports some types of fds correctly (the only platform we found that
+supports ptys for example was NetBSD), so kqueue might be compiled in, but
+not be used unless explicitly requested. The best way to use it is to find
+out whether kqueue supports your type of fd properly and use an embedded
+kqueue loop.
+.IP "\s-1EV_USE_PORT\s0" 4
+.IX Item "EV_USE_PORT"
+If defined to be \f(CW1\fR, libev will compile in support for the Solaris
+10 port style backend. Its availability will be detected at runtime,
+otherwise another method will be used as fallback. This is the preferred
+backend for Solaris 10 systems.
+.IP "\s-1EV_USE_DEVPOLL\s0" 4
+.IX Item "EV_USE_DEVPOLL"
+Reserved for future expansion, works like the \s-1USE\s0 symbols above.
+.IP "\s-1EV_USE_INOTIFY\s0" 4
+.IX Item "EV_USE_INOTIFY"
+If defined to be \f(CW1\fR, libev will compile in support for the Linux inotify
+interface to speed up \f(CW\*(C`ev_stat\*(C'\fR watchers. Its actual availability will
+be detected at runtime. If undefined, it will be enabled if the headers
+indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled.
+.IP "\s-1EV_ATOMIC_T\s0" 4
+.IX Item "EV_ATOMIC_T"
+Libev requires an integer type (suitable for storing \f(CW0\fR or \f(CW1\fR) whose
+access is atomic with respect to other threads or signal contexts. No such
+type is easily found in the C language, so you can provide your own type
+that you know is safe for your purposes. It is used both for signal handler \*(L"locking\*(R"
+as well as for signal and thread safety in \f(CW\*(C`ev_async\*(C'\fR watchers.
+.Sp
+In the absence of this define, libev will use \f(CW\*(C`sig_atomic_t volatile\*(C'\fR
+(from \fIsignal.h\fR), which is usually good enough on most platforms.
+.IP "\s-1EV_H\s0 (h)" 4
+.IX Item "EV_H (h)"
+The name of the \fIev.h\fR header file used to include it. The default if
+undefined is \f(CW"ev.h"\fR in \fIevent.h\fR, \fIev.c\fR and \fIev++.h\fR. This can be
+used to virtually rename the \fIev.h\fR header file in case of conflicts.
+.IP "\s-1EV_CONFIG_H\s0 (h)" 4
+.IX Item "EV_CONFIG_H (h)"
+If \f(CW\*(C`EV_STANDALONE\*(C'\fR isn't \f(CW1\fR, this variable can be used to override
+\&\fIev.c\fR's idea of where to find the \fIconfig.h\fR file, similarly to
+\&\f(CW\*(C`EV_H\*(C'\fR, above.
+.IP "\s-1EV_EVENT_H\s0 (h)" 4
+.IX Item "EV_EVENT_H (h)"
+Similarly to \f(CW\*(C`EV_H\*(C'\fR, this macro can be used to override \fIevent.c\fR's idea
+of how the \fIevent.h\fR header can be found, the default is \f(CW"event.h"\fR.
+.IP "\s-1EV_PROTOTYPES\s0 (h)" 4
+.IX Item "EV_PROTOTYPES (h)"
+If defined to be \f(CW0\fR, then \fIev.h\fR will not define any function
+prototypes, but still define all the structs and other symbols. This is
+occasionally useful if you want to provide your own wrapper functions
+around libev functions.
+.IP "\s-1EV_MULTIPLICITY\s0" 4
+.IX Item "EV_MULTIPLICITY"
+If undefined or defined to \f(CW1\fR, then all event-loop-specific functions
+will have the \f(CW\*(C`struct ev_loop *\*(C'\fR as first argument, and you can create
+additional independent event loops. Otherwise there will be no support
+for multiple event loops and there is no first event loop pointer
+argument. Instead, all functions act on the single default loop.
+.IP "\s-1EV_MINPRI\s0" 4
+.IX Item "EV_MINPRI"
+.PD 0
+.IP "\s-1EV_MAXPRI\s0" 4
+.IX Item "EV_MAXPRI"
+.PD
+The range of allowed priorities. \f(CW\*(C`EV_MINPRI\*(C'\fR must be smaller or equal to
+\&\f(CW\*(C`EV_MAXPRI\*(C'\fR, but otherwise there are no non-obvious limitations. You can
+provide for more priorities by overriding those symbols (usually defined
+to be \f(CW\*(C`\-2\*(C'\fR and \f(CW2\fR, respectively).
+.Sp
+When doing priority-based operations, libev usually has to linearly search
+all the priorities, so having many of them (hundreds) uses a lot of space
+and time, so using the defaults of five priorities (\-2 .. +2) is usually
+fine.
+.Sp
+If your embedding application does not need any priorities, defining these
+both to \f(CW0\fR will save some memory and \s-1CPU\s0.
+.IP "\s-1EV_PERIODIC_ENABLE\s0, \s-1EV_IDLE_ENABLE\s0, \s-1EV_EMBED_ENABLE\s0, \s-1EV_STAT_ENABLE\s0, \s-1EV_PREPARE_ENABLE\s0, \s-1EV_CHECK_ENABLE\s0, \s-1EV_FORK_ENABLE\s0, \s-1EV_SIGNAL_ENABLE\s0, \s-1EV_ASYNC_ENABLE\s0, \s-1EV_CHILD_ENABLE\s0." 4
+.IX Item "EV_PERIODIC_ENABLE, EV_IDLE_ENABLE, EV_EMBED_ENABLE, EV_STAT_ENABLE, EV_PREPARE_ENABLE, EV_CHECK_ENABLE, EV_FORK_ENABLE, EV_SIGNAL_ENABLE, EV_ASYNC_ENABLE, EV_CHILD_ENABLE."
+If undefined or defined to be \f(CW1\fR (and the platform supports it), then
+the respective watcher type is supported. If defined to be \f(CW0\fR, then it
+is not. Disabling watcher types mainly saves code size.
+.IP "\s-1EV_FEATURES\s0" 4
+.IX Item "EV_FEATURES"
+If you need to shave off some kilobytes of code at the expense of some
+speed (but with the full \s-1API\s0), you can define this symbol to request
+certain subsets of functionality. The default is to enable all features
+that can be enabled on the platform.
+.Sp
+A typical way to use this symbol is to define it to \f(CW0\fR (or to a bitset
+with some broad features you want) and then selectively re-enable
+additional parts you want, for example if you want everything minimal,
+but multiple event loop support, async and child watchers and the poll
+backend, use this:
+.Sp
+.Vb 5
+\& #define EV_FEATURES 0
+\& #define EV_MULTIPLICITY 1
+\& #define EV_USE_POLL 1
+\& #define EV_CHILD_ENABLE 1
+\& #define EV_ASYNC_ENABLE 1
+.Ve
+.Sp
+The actual value is a bitset, it can be a combination of the following
+values:
+.RS 4
+.ie n .IP "1 \- faster/larger code" 4
+.el .IP "\f(CW1\fR \- faster/larger code" 4
+.IX Item "1 - faster/larger code"
+Use larger code to speed up some operations.
+.Sp
+Currently this is used to override some inlining decisions (enlarging the
+code size by roughly 30% on amd64).
+.Sp
+When optimising for size, use of compiler flags such as \f(CW\*(C`\-Os\*(C'\fR with
+gcc is recommended, as well as \f(CW\*(C`\-DNDEBUG\*(C'\fR, as libev contains a number of
+assertions.
+.ie n .IP "2 \- faster/larger data structures" 4
+.el .IP "\f(CW2\fR \- faster/larger data structures" 4
+.IX Item "2 - faster/larger data structures"
+Replaces the small 2\-heap for timer management by a faster 4\-heap, larger
+hash table sizes and so on. This will usually further increase code size
+and can additionally have an effect on the size of data structures at
+runtime.
+.ie n .IP "4 \- full \s-1API\s0 configuration" 4
+.el .IP "\f(CW4\fR \- full \s-1API\s0 configuration" 4
+.IX Item "4 - full API configuration"
+This enables priorities (sets \f(CW\*(C`EV_MAXPRI\*(C'\fR=2 and \f(CW\*(C`EV_MINPRI\*(C'\fR=\-2), and
+enables multiplicity (\f(CW\*(C`EV_MULTIPLICITY\*(C'\fR=1).
+.ie n .IP "8 \- full \s-1API\s0" 4
+.el .IP "\f(CW8\fR \- full \s-1API\s0" 4
+.IX Item "8 - full API"
+This enables a lot of the \*(L"lesser used\*(R" \s-1API\s0 functions. See \f(CW\*(C`ev.h\*(C'\fR for
+details on which parts of the \s-1API\s0 are still available without this
+feature, and do not complain if this subset changes over time.
+.ie n .IP "16 \- enable all optional watcher types" 4
+.el .IP "\f(CW16\fR \- enable all optional watcher types" 4
+.IX Item "16 - enable all optional watcher types"
+Enables all optional watcher types. If you want to selectively enable
+only some watcher types other than I/O and timers (e.g. prepare,
+embed, async, child...) you can enable them manually by defining
+\&\f(CW\*(C`EV_watchertype_ENABLE\*(C'\fR to \f(CW1\fR instead.
+.ie n .IP "32 \- enable all backends" 4
+.el .IP "\f(CW32\fR \- enable all backends" 4
+.IX Item "32 - enable all backends"
+This enables all backends \- without this feature, you need to enable at
+least one backend manually (\f(CW\*(C`EV_USE_SELECT\*(C'\fR is a good choice).
+.ie n .IP "64 \- enable OS-specific ""helper"" APIs" 4
+.el .IP "\f(CW64\fR \- enable OS-specific ``helper'' APIs" 4
+.IX Item "64 - enable OS-specific helper APIs"
+Enable inotify, eventfd, signalfd and similar OS-specific helper APIs by
+default.
+.RE
+.RS 4
+.Sp
+Compiling with \f(CW\*(C`gcc \-Os \-DEV_STANDALONE \-DEV_USE_EPOLL=1 \-DEV_FEATURES=0\*(C'\fR
+reduces the compiled size of libev from 24.7Kb code/2.8Kb data to 6.5Kb
+code/0.3Kb data on my GNU/Linux amd64 system, while still giving you I/O
+watchers, timers and monotonic clock support.
+.Sp
+With an intelligent-enough linker (gcc+binutils are intelligent enough
+when you use \f(CW\*(C`\-Wl,\-\-gc\-sections \-ffunction\-sections\*(C'\fR) functions unused by
+your program might be left out as well \- a binary starting a timer and an
+I/O watcher then might come out at only 5Kb.
+.RE
+.IP "\s-1EV_AVOID_STDIO\s0" 4
+.IX Item "EV_AVOID_STDIO"
+If this is set to \f(CW1\fR at compiletime, then libev will avoid using stdio
+functions (printf, scanf, perror etc.). This will increase the code size
+somewhat, but if your program doesn't otherwise depend on stdio and your
+libc allows it, this avoids linking in the stdio library which is quite
+big.
+.Sp
+Note that error messages might become less precise when this option is
+enabled.
+.IP "\s-1EV_NSIG\s0" 4
+.IX Item "EV_NSIG"
+The highest supported signal number, +1 (or, the number of
+signals): Normally, libev tries to deduce the maximum number of signals
+automatically, but sometimes this fails, in which case it can be
+specified. Also, using a lower number than detected (\f(CW32\fR should be
+good for about any system in existence) can save some memory, as libev
+statically allocates some 12\-24 bytes per signal number.
+.IP "\s-1EV_PID_HASHSIZE\s0" 4
+.IX Item "EV_PID_HASHSIZE"
+\&\f(CW\*(C`ev_child\*(C'\fR watchers use a small hash table to distribute workload by
+pid. The default size is \f(CW16\fR (or \f(CW1\fR with \f(CW\*(C`EV_FEATURES\*(C'\fR disabled),
+usually more than enough. If you need to manage thousands of children you
+might want to increase this value (\fImust\fR be a power of two).
+.IP "\s-1EV_INOTIFY_HASHSIZE\s0" 4
+.IX Item "EV_INOTIFY_HASHSIZE"
+\&\f(CW\*(C`ev_stat\*(C'\fR watchers use a small hash table to distribute workload by
+inotify watch id. The default size is \f(CW16\fR (or \f(CW1\fR with \f(CW\*(C`EV_FEATURES\*(C'\fR
+disabled), usually more than enough. If you need to manage thousands of
+\&\f(CW\*(C`ev_stat\*(C'\fR watchers you might want to increase this value (\fImust\fR be a
+power of two).
+.IP "\s-1EV_USE_4HEAP\s0" 4
+.IX Item "EV_USE_4HEAP"
+Heaps are not very cache-efficient. To improve the cache-efficiency of the
+timer and periodics heaps, libev uses a 4\-heap when this symbol is defined
+to \f(CW1\fR. The 4\-heap uses more complicated (longer) code but has noticeably
+faster performance with many (thousands) of watchers.
+.Sp
+The default is \f(CW1\fR, unless \f(CW\*(C`EV_FEATURES\*(C'\fR overrides it, in which case it
+will be \f(CW0\fR.
+.IP "\s-1EV_HEAP_CACHE_AT\s0" 4
+.IX Item "EV_HEAP_CACHE_AT"
+Heaps are not very cache-efficient. To improve the cache-efficiency of the
+timer and periodics heaps, libev can cache the timestamp (\fIat\fR) within
+the heap structure (selected by defining \f(CW\*(C`EV_HEAP_CACHE_AT\*(C'\fR to \f(CW1\fR),
+which uses 8\-12 bytes more per watcher and a few hundred bytes more code,
+but avoids random read accesses on heap changes. This improves performance
+noticeably with many (hundreds) of watchers.
+.Sp
+The default is \f(CW1\fR, unless \f(CW\*(C`EV_FEATURES\*(C'\fR overrides it, in which case it
+will be \f(CW0\fR.
+.IP "\s-1EV_VERIFY\s0" 4
+.IX Item "EV_VERIFY"
+Controls how much internal verification (see \f(CW\*(C`ev_verify ()\*(C'\fR) will
+be done: If set to \f(CW0\fR, no internal verification code will be compiled
+in. If set to \f(CW1\fR, then verification code will be compiled in, but not
+called. If set to \f(CW2\fR, then the internal verification code will be
+called once per loop, which can slow down libev. If set to \f(CW3\fR, then the
+verification code will be called very frequently, which will slow down
+libev considerably.
+.Sp
+The default is \f(CW1\fR, unless \f(CW\*(C`EV_FEATURES\*(C'\fR overrides it, in which case it
+will be \f(CW0\fR.
+.IP "\s-1EV_COMMON\s0" 4
+.IX Item "EV_COMMON"
+By default, all watchers have a \f(CW\*(C`void *data\*(C'\fR member. By redefining
+this macro to something else you can include more and other types of
+members. You have to define it each time you include one of the files,
+though, and it must be identical each time.
+.Sp
+For example, the perl \s-1EV\s0 module uses something like this:
+.Sp
+.Vb 3
+\& #define EV_COMMON \e
+\& SV *self; /* contains this struct */ \e
+\& SV *cb_sv, *fh /* note no trailing ";" */
+.Ve
+.IP "\s-1EV_CB_DECLARE\s0 (type)" 4
+.IX Item "EV_CB_DECLARE (type)"
+.PD 0
+.IP "\s-1EV_CB_INVOKE\s0 (watcher, revents)" 4
+.IX Item "EV_CB_INVOKE (watcher, revents)"
+.IP "ev_set_cb (ev, cb)" 4
+.IX Item "ev_set_cb (ev, cb)"
+.PD
+Can be used to change the callback member declaration in each watcher,
+and the way callbacks are invoked and set. Must expand to a struct member
+definition and a statement, respectively. See the \fIev.h\fR header file for
+their default definitions. One possible use for overriding these is to
+avoid the \f(CW\*(C`struct ev_loop *\*(C'\fR as first argument in all cases, or to use
+method calls instead of plain function calls in \*(C+.
+.SS "\s-1EXPORTED\s0 \s-1API\s0 \s-1SYMBOLS\s0"
+.IX Subsection "EXPORTED API SYMBOLS"
+If you need to re-export the \s-1API\s0 (e.g. via a \s-1DLL\s0) and you need a list of
+exported symbols, you can use the provided \fISymbol.*\fR files which list
+all public symbols, one per line:
+.PP
+.Vb 2
+\& Symbols.ev for libev proper
+\& Symbols.event for the libevent emulation
+.Ve
+.PP
+This can also be used to rename all public symbols to avoid clashes with
+multiple versions of libev linked together (which is obviously bad in
+itself, but sometimes it is inconvenient to avoid this).
+.PP
+A sed command like this will create wrapper \f(CW\*(C`#define\*(C'\fR's that you need to
+include before including \fIev.h\fR:
+.PP
+.Vb 1
+\& <Symbols.ev sed \-e "s/.*/#define & myprefix_&/" >wrap.h
+.Ve
+.PP
+This would create a file \fIwrap.h\fR which essentially looks like this:
+.PP
+.Vb 4
+\& #define ev_backend myprefix_ev_backend
+\& #define ev_check_start myprefix_ev_check_start
+\& #define ev_check_stop myprefix_ev_check_stop
+\& ...
+.Ve
+.SS "\s-1EXAMPLES\s0"
+.IX Subsection "EXAMPLES"
+For a real-world example of a program the includes libev
+verbatim, you can have a look at the \s-1EV\s0 perl module
+(<http://software.schmorp.de/pkg/EV.html>). It has the libev files in
+the \fIlibev/\fR subdirectory and includes them in the \fI\s-1EV/EVAPI\s0.h\fR (public
+interface) and \fI\s-1EV\s0.xs\fR (implementation) files. Only the \fI\s-1EV\s0.xs\fR file
+will be compiled. It is pretty complex because it provides its own header
+file.
+.PP
+The usage in rxvt-unicode is simpler. It has a \fIev_cpp.h\fR header file
+that everybody includes and which overrides some configure choices:
+.PP
+.Vb 8
+\& #define EV_FEATURES 8
+\& #define EV_USE_SELECT 1
+\& #define EV_PREPARE_ENABLE 1
+\& #define EV_IDLE_ENABLE 1
+\& #define EV_SIGNAL_ENABLE 1
+\& #define EV_CHILD_ENABLE 1
+\& #define EV_USE_STDEXCEPT 0
+\& #define EV_CONFIG_H <config.h>
+\&
+\& #include "ev++.h"
+.Ve
+.PP
+And a \fIev_cpp.C\fR implementation file that contains libev proper and is compiled:
+.PP
+.Vb 2
+\& #include "ev_cpp.h"
+\& #include "ev.c"
+.Ve
+.SH "INTERACTION WITH OTHER PROGRAMS, LIBRARIES OR THE ENVIRONMENT"
+.IX Header "INTERACTION WITH OTHER PROGRAMS, LIBRARIES OR THE ENVIRONMENT"
+.SS "\s-1THREADS\s0 \s-1AND\s0 \s-1COROUTINES\s0"
+.IX Subsection "THREADS AND COROUTINES"
+\fI\s-1THREADS\s0\fR
+.IX Subsection "THREADS"
+.PP
+All libev functions are reentrant and thread-safe unless explicitly
+documented otherwise, but libev implements no locking itself. This means
+that you can use as many loops as you want in parallel, as long as there
+are no concurrent calls into any libev function with the same loop
+parameter (\f(CW\*(C`ev_default_*\*(C'\fR calls have an implicit default loop parameter,
+of course): libev guarantees that different event loops share no data
+structures that need any locking.
+.PP
+Or to put it differently: calls with different loop parameters can be done
+concurrently from multiple threads, calls with the same loop parameter
+must be done serially (but can be done from different threads, as long as
+only one thread ever is inside a call at any point in time, e.g. by using
+a mutex per loop).
+.PP
+Specifically to support threads (and signal handlers), libev implements
+so-called \f(CW\*(C`ev_async\*(C'\fR watchers, which allow some limited form of
+concurrency on the same event loop, namely waking it up \*(L"from the
+outside\*(R".
+.PP
+If you want to know which design (one loop, locking, or multiple loops
+without or something else still) is best for your problem, then I cannot
+help you, but here is some generic advice:
+.IP "\(bu" 4
+most applications have a main thread: use the default libev loop
+in that thread, or create a separate thread running only the default loop.
+.Sp
+This helps integrating other libraries or software modules that use libev
+themselves and don't care/know about threading.
+.IP "\(bu" 4
+one loop per thread is usually a good model.
+.Sp
+Doing this is almost never wrong, sometimes a better-performance model
+exists, but it is always a good start.
+.IP "\(bu" 4
+other models exist, such as the leader/follower pattern, where one
+loop is handed through multiple threads in a kind of round-robin fashion.
+.Sp
+Choosing a model is hard \- look around, learn, know that usually you can do
+better than you currently do :\-)
+.IP "\(bu" 4
+often you need to talk to some other thread which blocks in the
+event loop.
+.Sp
+\&\f(CW\*(C`ev_async\*(C'\fR watchers can be used to wake them up from other threads safely
+(or from signal contexts...).
+.Sp
+An example use would be to communicate signals or other events that only
+work in the default loop by registering the signal watcher with the
+default loop and triggering an \f(CW\*(C`ev_async\*(C'\fR watcher from the default loop
+watcher callback into the event loop interested in the signal.
+.PP
+See also \*(L"\s-1THREAD\s0 \s-1LOCKING\s0 \s-1EXAMPLE\s0\*(R".
+.PP
+\fI\s-1COROUTINES\s0\fR
+.IX Subsection "COROUTINES"
+.PP
+Libev is very accommodating to coroutines (\*(L"cooperative threads\*(R"):
+libev fully supports nesting calls to its functions from different
+coroutines (e.g. you can call \f(CW\*(C`ev_run\*(C'\fR on the same loop from two
+different coroutines, and switch freely between both coroutines running
+the loop, as long as you don't confuse yourself). The only exception is
+that you must not do this from \f(CW\*(C`ev_periodic\*(C'\fR reschedule callbacks.
+.PP
+Care has been taken to ensure that libev does not keep local state inside
+\&\f(CW\*(C`ev_run\*(C'\fR, and other calls do not usually allow for coroutine switches as
+they do not call any callbacks.
+.SS "\s-1COMPILER\s0 \s-1WARNINGS\s0"
+.IX Subsection "COMPILER WARNINGS"
+Depending on your compiler and compiler settings, you might get no or a
+lot of warnings when compiling libev code. Some people are apparently
+scared by this.
+.PP
+However, these are unavoidable for many reasons. For one, each compiler
+has different warnings, and each user has different tastes regarding
+warning options. \*(L"Warn-free\*(R" code therefore cannot be a goal except when
+targeting a specific compiler and compiler-version.
+.PP
+Another reason is that some compiler warnings require elaborate
+workarounds, or other changes to the code that make it less clear and less
+maintainable.
+.PP
+And of course, some compiler warnings are just plain stupid, or simply
+wrong (because they don't actually warn about the condition their message
+seems to warn about). For example, certain older gcc versions had some
+warnings that resulted in an extreme number of false positives. These have
+been fixed, but some people still insist on making code warn-free with
+such buggy versions.
+.PP
+While libev is written to generate as few warnings as possible,
+\&\*(L"warn-free\*(R" code is not a goal, and it is recommended not to build libev
+with any compiler warnings enabled unless you are prepared to cope with
+them (e.g. by ignoring them). Remember that warnings are just that:
+warnings, not errors, or proof of bugs.
+.SS "\s-1VALGRIND\s0"
+.IX Subsection "VALGRIND"
+Valgrind has a special section here because it is a popular tool that is
+highly useful. Unfortunately, valgrind reports are very hard to interpret.
+.PP
+If you think you found a bug (memory leak, uninitialised data access etc.)
+in libev, then check twice: If valgrind reports something like:
+.PP
+.Vb 3
+\& ==2274== definitely lost: 0 bytes in 0 blocks.
+\& ==2274== possibly lost: 0 bytes in 0 blocks.
+\& ==2274== still reachable: 256 bytes in 1 blocks.
+.Ve
+.PP
+Then there is no memory leak, just as memory accounted to global variables
+is not a memleak \- the memory is still being referenced, and didn't leak.
+.PP
+Similarly, under some circumstances, valgrind might report kernel bugs
+as if it were a bug in libev (e.g. in realloc or in the poll backend,
+although an acceptable workaround has been found here), or it might be
+confused.
+.PP
+Keep in mind that valgrind is a very good tool, but only a tool. Don't
+make it into some kind of religion.
+.PP
+If you are unsure about something, feel free to contact the mailing list
+with the full valgrind report and an explanation on why you think this
+is a bug in libev (best check the archives, too :). However, don't be
+annoyed when you get a brisk \*(L"this is no bug\*(R" answer and take the chance
+of learning how to interpret valgrind properly.
+.PP
+If you need, for some reason, empty reports from valgrind for your project
+I suggest using suppression lists.
+.SH "PORTABILITY NOTES"
+.IX Header "PORTABILITY NOTES"
+.SS "\s-1GNU/LINUX\s0 32 \s-1BIT\s0 \s-1LIMITATIONS\s0"
+.IX Subsection "GNU/LINUX 32 BIT LIMITATIONS"
+GNU/Linux is the only common platform that supports 64 bit file/large file
+interfaces but \fIdisables\fR them by default.
+.PP
+That means that libev compiled in the default environment doesn't support
+files larger than 2GiB or so, which mainly affects \f(CW\*(C`ev_stat\*(C'\fR watchers.
+.PP
+Unfortunately, many programs try to work around this GNU/Linux issue
+by enabling the large file \s-1API\s0, which makes them incompatible with the
+standard libev compiled for their system.
+.PP
+Likewise, libev cannot enable the large file \s-1API\s0 itself as this would
+suddenly make it incompatible to the default compile time environment,
+i.e. all programs not using special compile switches.
+.SS "\s-1OS/X\s0 \s-1AND\s0 \s-1DARWIN\s0 \s-1BUGS\s0"
+.IX Subsection "OS/X AND DARWIN BUGS"
+The whole thing is a bug if you ask me \- basically any system interface
+you touch is broken, whether it is locales, poll, kqueue or even the
+OpenGL drivers.
+.PP
+\fI\f(CI\*(C`kqueue\*(C'\fI is buggy\fR
+.IX Subsection "kqueue is buggy"
+.PP
+The kqueue syscall is broken in all known versions \- most versions support
+only sockets, many support pipes.
+.PP
+Libev tries to work around this by not using \f(CW\*(C`kqueue\*(C'\fR by default on this
+rotten platform, but of course you can still ask for it when creating a
+loop \- embedding a socket-only kqueue loop into a select-based one is
+probably going to work well.
+.PP
+\fI\f(CI\*(C`poll\*(C'\fI is buggy\fR
+.IX Subsection "poll is buggy"
+.PP
+Instead of fixing \f(CW\*(C`kqueue\*(C'\fR, Apple replaced their (working) \f(CW\*(C`poll\*(C'\fR
+implementation by something calling \f(CW\*(C`kqueue\*(C'\fR internally around the 10.5.6
+release, so now \f(CW\*(C`kqueue\*(C'\fR \fIand\fR \f(CW\*(C`poll\*(C'\fR are broken.
+.PP
+Libev tries to work around this by not using \f(CW\*(C`poll\*(C'\fR by default on
+this rotten platform, but of course you can still ask for it when creating
+a loop.
+.PP
+\fI\f(CI\*(C`select\*(C'\fI is buggy\fR
+.IX Subsection "select is buggy"
+.PP
+All that's left is \f(CW\*(C`select\*(C'\fR, and of course Apple found a way to fuck this
+one up as well: On \s-1OS/X\s0, \f(CW\*(C`select\*(C'\fR actively limits the number of file
+descriptors you can pass in to 1024 \- your program suddenly crashes when
+you use more.
+.PP
+There is an undocumented \*(L"workaround\*(R" for this \- defining
+\&\f(CW\*(C`_DARWIN_UNLIMITED_SELECT\*(C'\fR, which libev tries to use, so select \fIshould\fR
+work on \s-1OS/X\s0.
+.SS "\s-1SOLARIS\s0 \s-1PROBLEMS\s0 \s-1AND\s0 \s-1WORKAROUNDS\s0"
+.IX Subsection "SOLARIS PROBLEMS AND WORKAROUNDS"
+\fI\f(CI\*(C`errno\*(C'\fI reentrancy\fR
+.IX Subsection "errno reentrancy"
+.PP
+The default compile environment on Solaris is unfortunately so
+thread-unsafe that you can't even use components/libraries compiled
+without \f(CW\*(C`\-D_REENTRANT\*(C'\fR in a threaded program, which, of course, isn't
+defined by default. A valid, if stupid, implementation choice.
+.PP
+If you want to use libev in threaded environments you have to make sure
+it's compiled with \f(CW\*(C`_REENTRANT\*(C'\fR defined.
+.PP
+\fIEvent port backend\fR
+.IX Subsection "Event port backend"
+.PP
+The scalable event interface for Solaris is called \*(L"event
+ports\*(R". Unfortunately, this mechanism is very buggy in all major
+releases. If you run into high \s-1CPU\s0 usage, your program freezes or you get
+a large number of spurious wakeups, make sure you have all the relevant
+and latest kernel patches applied. No, I don't know which ones, but there
+are multiple ones to apply, and afterwards, event ports actually work
+great.
+.PP
+If you can't get it to work, you can try running the program by setting
+the environment variable \f(CW\*(C`LIBEV_FLAGS=3\*(C'\fR to only allow \f(CW\*(C`poll\*(C'\fR and
+\&\f(CW\*(C`select\*(C'\fR backends.
+.SS "\s-1AIX\s0 \s-1POLL\s0 \s-1BUG\s0"
+.IX Subsection "AIX POLL BUG"
+\&\s-1AIX\s0 unfortunately has a broken \f(CW\*(C`poll.h\*(C'\fR header. Libev works around
+this by trying to avoid the poll backend altogether (i.e. it's not even
+compiled in), which normally isn't a big problem as \f(CW\*(C`select\*(C'\fR works fine
+with large bitsets on \s-1AIX\s0, and \s-1AIX\s0 is dead anyway.
+.SS "\s-1WIN32\s0 \s-1PLATFORM\s0 \s-1LIMITATIONS\s0 \s-1AND\s0 \s-1WORKAROUNDS\s0"
+.IX Subsection "WIN32 PLATFORM LIMITATIONS AND WORKAROUNDS"
+\fIGeneral issues\fR
+.IX Subsection "General issues"
+.PP
+Win32 doesn't support any of the standards (e.g. \s-1POSIX\s0) that libev
+requires, and its I/O model is fundamentally incompatible with the \s-1POSIX\s0
+model. Libev still offers limited functionality on this platform in
+the form of the \f(CW\*(C`EVBACKEND_SELECT\*(C'\fR backend, and only supports socket
+descriptors. This only applies when using Win32 natively, not when using
+e.g. cygwin. Actually, it only applies to the microsofts own compilers,
+as every compielr comes with a slightly differently broken/incompatible
+environment.
+.PP
+Lifting these limitations would basically require the full
+re-implementation of the I/O system. If you are into this kind of thing,
+then note that glib does exactly that for you in a very portable way (note
+also that glib is the slowest event library known to man).
+.PP
+There is no supported compilation method available on windows except
+embedding it into other applications.
+.PP
+Sensible signal handling is officially unsupported by Microsoft \- libev
+tries its best, but under most conditions, signals will simply not work.
+.PP
+Not a libev limitation but worth mentioning: windows apparently doesn't
+accept large writes: instead of resulting in a partial write, windows will
+either accept everything or return \f(CW\*(C`ENOBUFS\*(C'\fR if the buffer is too large,
+so make sure you only write small amounts into your sockets (less than a
+megabyte seems safe, but this apparently depends on the amount of memory
+available).
+.PP
+Due to the many, low, and arbitrary limits on the win32 platform and
+the abysmal performance of winsockets, using a large number of sockets
+is not recommended (and not reasonable). If your program needs to use
+more than a hundred or so sockets, then likely it needs to use a totally
+different implementation for windows, as libev offers the \s-1POSIX\s0 readiness
+notification model, which cannot be implemented efficiently on windows
+(due to Microsoft monopoly games).
+.PP
+A typical way to use libev under windows is to embed it (see the embedding
+section for details) and use the following \fIevwrap.h\fR header file instead
+of \fIev.h\fR:
+.PP
+.Vb 2
+\& #define EV_STANDALONE /* keeps ev from requiring config.h */
+\& #define EV_SELECT_IS_WINSOCKET 1 /* configure libev for windows select */
+\&
+\& #include "ev.h"
+.Ve
+.PP
+And compile the following \fIevwrap.c\fR file into your project (make sure
+you do \fInot\fR compile the \fIev.c\fR or any other embedded source files!):
+.PP
+.Vb 2
+\& #include "evwrap.h"
+\& #include "ev.c"
+.Ve
+.PP
+\fIThe winsocket \f(CI\*(C`select\*(C'\fI function\fR
+.IX Subsection "The winsocket select function"
+.PP
+The winsocket \f(CW\*(C`select\*(C'\fR function doesn't follow \s-1POSIX\s0 in that it
+requires socket \fIhandles\fR and not socket \fIfile descriptors\fR (it is
+also extremely buggy). This makes select very inefficient, and also
+requires a mapping from file descriptors to socket handles (the Microsoft
+C runtime provides the function \f(CW\*(C`_open_osfhandle\*(C'\fR for this). See the
+discussion of the \f(CW\*(C`EV_SELECT_USE_FD_SET\*(C'\fR, \f(CW\*(C`EV_SELECT_IS_WINSOCKET\*(C'\fR and
+\&\f(CW\*(C`EV_FD_TO_WIN32_HANDLE\*(C'\fR preprocessor symbols for more info.
+.PP
+The configuration for a \*(L"naked\*(R" win32 using the Microsoft runtime
+libraries and raw winsocket select is:
+.PP
+.Vb 2
+\& #define EV_USE_SELECT 1
+\& #define EV_SELECT_IS_WINSOCKET 1 /* forces EV_SELECT_USE_FD_SET, too */
+.Ve
+.PP
+Note that winsockets handling of fd sets is O(n), so you can easily get a
+complexity in the O(nA\*^X) range when using win32.
+.PP
+\fILimited number of file descriptors\fR
+.IX Subsection "Limited number of file descriptors"
+.PP
+Windows has numerous arbitrary (and low) limits on things.
+.PP
+Early versions of winsocket's select only supported waiting for a maximum
+of \f(CW64\fR handles (probably owning to the fact that all windows kernels
+can only wait for \f(CW64\fR things at the same time internally; Microsoft
+recommends spawning a chain of threads and wait for 63 handles and the
+previous thread in each. Sounds great!).
+.PP
+Newer versions support more handles, but you need to define \f(CW\*(C`FD_SETSIZE\*(C'\fR
+to some high number (e.g. \f(CW2048\fR) before compiling the winsocket select
+call (which might be in libev or elsewhere, for example, perl and many
+other interpreters do their own select emulation on windows).
+.PP
+Another limit is the number of file descriptors in the Microsoft runtime
+libraries, which by default is \f(CW64\fR (there must be a hidden \fI64\fR
+fetish or something like this inside Microsoft). You can increase this
+by calling \f(CW\*(C`_setmaxstdio\*(C'\fR, which can increase this limit to \f(CW2048\fR
+(another arbitrary limit), but is broken in many versions of the Microsoft
+runtime libraries. This might get you to about \f(CW512\fR or \f(CW2048\fR sockets
+(depending on windows version and/or the phase of the moon). To get more,
+you need to wrap all I/O functions and provide your own fd management, but
+the cost of calling select (O(nA\*^X)) will likely make this unworkable.
+.SS "\s-1PORTABILITY\s0 \s-1REQUIREMENTS\s0"
+.IX Subsection "PORTABILITY REQUIREMENTS"
+In addition to a working ISO-C implementation and of course the
+backend-specific APIs, libev relies on a few additional extensions:
+.ie n .IP """void (*)(ev_watcher_type *, int revents)"" must have compatible calling conventions regardless of ""ev_watcher_type *""." 4
+.el .IP "\f(CWvoid (*)(ev_watcher_type *, int revents)\fR must have compatible calling conventions regardless of \f(CWev_watcher_type *\fR." 4
+.IX Item "void (*)(ev_watcher_type *, int revents) must have compatible calling conventions regardless of ev_watcher_type *."
+Libev assumes not only that all watcher pointers have the same internal
+structure (guaranteed by \s-1POSIX\s0 but not by \s-1ISO\s0 C for example), but it also
+assumes that the same (machine) code can be used to call any watcher
+callback: The watcher callbacks have different type signatures, but libev
+calls them using an \f(CW\*(C`ev_watcher *\*(C'\fR internally.
+.IP "pointer accesses must be thread-atomic" 4
+.IX Item "pointer accesses must be thread-atomic"
+Accessing a pointer value must be atomic, it must both be readable and
+writable in one piece \- this is the case on all current architectures.
+.ie n .IP """sig_atomic_t volatile"" must be thread-atomic as well" 4
+.el .IP "\f(CWsig_atomic_t volatile\fR must be thread-atomic as well" 4
+.IX Item "sig_atomic_t volatile must be thread-atomic as well"
+The type \f(CW\*(C`sig_atomic_t volatile\*(C'\fR (or whatever is defined as
+\&\f(CW\*(C`EV_ATOMIC_T\*(C'\fR) must be atomic with respect to accesses from different
+threads. This is not part of the specification for \f(CW\*(C`sig_atomic_t\*(C'\fR, but is
+believed to be sufficiently portable.
+.ie n .IP """sigprocmask"" must work in a threaded environment" 4
+.el .IP "\f(CWsigprocmask\fR must work in a threaded environment" 4
+.IX Item "sigprocmask must work in a threaded environment"
+Libev uses \f(CW\*(C`sigprocmask\*(C'\fR to temporarily block signals. This is not
+allowed in a threaded program (\f(CW\*(C`pthread_sigmask\*(C'\fR has to be used). Typical
+pthread implementations will either allow \f(CW\*(C`sigprocmask\*(C'\fR in the \*(L"main
+thread\*(R" or will block signals process-wide, both behaviours would
+be compatible with libev. Interaction between \f(CW\*(C`sigprocmask\*(C'\fR and
+\&\f(CW\*(C`pthread_sigmask\*(C'\fR could complicate things, however.
+.Sp
+The most portable way to handle signals is to block signals in all threads
+except the initial one, and run the default loop in the initial thread as
+well.
+.ie n .IP """long"" must be large enough for common memory allocation sizes" 4
+.el .IP "\f(CWlong\fR must be large enough for common memory allocation sizes" 4
+.IX Item "long must be large enough for common memory allocation sizes"
+To improve portability and simplify its \s-1API\s0, libev uses \f(CW\*(C`long\*(C'\fR internally
+instead of \f(CW\*(C`size_t\*(C'\fR when allocating its data structures. On non-POSIX
+systems (Microsoft...) this might be unexpectedly low, but is still at
+least 31 bits everywhere, which is enough for hundreds of millions of
+watchers.
+.ie n .IP """double"" must hold a time value in seconds with enough accuracy" 4
+.el .IP "\f(CWdouble\fR must hold a time value in seconds with enough accuracy" 4
+.IX Item "double must hold a time value in seconds with enough accuracy"
+The type \f(CW\*(C`double\*(C'\fR is used to represent timestamps. It is required to
+have at least 51 bits of mantissa (and 9 bits of exponent), which is
+good enough for at least into the year 4000 with millisecond accuracy
+(the design goal for libev). This requirement is overfulfilled by
+implementations using \s-1IEEE\s0 754, which is basically all existing ones. With
+\&\s-1IEEE\s0 754 doubles, you get microsecond accuracy until at least 2200.
+.PP
+If you know of other additional requirements drop me a note.
+.SH "ALGORITHMIC COMPLEXITIES"
+.IX Header "ALGORITHMIC COMPLEXITIES"
+In this section the complexities of (many of) the algorithms used inside
+libev will be documented. For complexity discussions about backends see
+the documentation for \f(CW\*(C`ev_default_init\*(C'\fR.
+.PP
+All of the following are about amortised time: If an array needs to be
+extended, libev needs to realloc and move the whole array, but this
+happens asymptotically rarer with higher number of elements, so O(1) might
+mean that libev does a lengthy realloc operation in rare cases, but on
+average it is much faster and asymptotically approaches constant time.
+.IP "Starting and stopping timer/periodic watchers: O(log skipped_other_timers)" 4
+.IX Item "Starting and stopping timer/periodic watchers: O(log skipped_other_timers)"
+This means that, when you have a watcher that triggers in one hour and
+there are 100 watchers that would trigger before that, then inserting will
+have to skip roughly seven (\f(CW\*(C`ld 100\*(C'\fR) of these watchers.
+.IP "Changing timer/periodic watchers (by autorepeat or calling again): O(log skipped_other_timers)" 4
+.IX Item "Changing timer/periodic watchers (by autorepeat or calling again): O(log skipped_other_timers)"
+That means that changing a timer costs less than removing/adding them,
+as only the relative motion in the event queue has to be paid for.
+.IP "Starting io/check/prepare/idle/signal/child/fork/async watchers: O(1)" 4
+.IX Item "Starting io/check/prepare/idle/signal/child/fork/async watchers: O(1)"
+These just add the watcher into an array or at the head of a list.
+.IP "Stopping check/prepare/idle/fork/async watchers: O(1)" 4
+.IX Item "Stopping check/prepare/idle/fork/async watchers: O(1)"
+.PD 0
+.IP "Stopping an io/signal/child watcher: O(number_of_watchers_for_this_(fd/signal/pid % \s-1EV_PID_HASHSIZE\s0))" 4
+.IX Item "Stopping an io/signal/child watcher: O(number_of_watchers_for_this_(fd/signal/pid % EV_PID_HASHSIZE))"
+.PD
+These watchers are stored in lists, so they need to be walked to find the
+correct watcher to remove. The lists are usually short (you don't usually
+have many watchers waiting for the same fd or signal: one is typical, two
+is rare).
+.IP "Finding the next timer in each loop iteration: O(1)" 4
+.IX Item "Finding the next timer in each loop iteration: O(1)"
+By virtue of using a binary or 4\-heap, the next timer is always found at a
+fixed position in the storage array.
+.IP "Each change on a file descriptor per loop iteration: O(number_of_watchers_for_this_fd)" 4
+.IX Item "Each change on a file descriptor per loop iteration: O(number_of_watchers_for_this_fd)"
+A change means an I/O watcher gets started or stopped, which requires
+libev to recalculate its status (and possibly tell the kernel, depending
+on backend and whether \f(CW\*(C`ev_io_set\*(C'\fR was used).
+.IP "Activating one watcher (putting it into the pending state): O(1)" 4
+.IX Item "Activating one watcher (putting it into the pending state): O(1)"
+.PD 0
+.IP "Priority handling: O(number_of_priorities)" 4
+.IX Item "Priority handling: O(number_of_priorities)"
+.PD
+Priorities are implemented by allocating some space for each
+priority. When doing priority-based operations, libev usually has to
+linearly search all the priorities, but starting/stopping and activating
+watchers becomes O(1) with respect to priority handling.
+.IP "Sending an ev_async: O(1)" 4
+.IX Item "Sending an ev_async: O(1)"
+.PD 0
+.IP "Processing ev_async_send: O(number_of_async_watchers)" 4
+.IX Item "Processing ev_async_send: O(number_of_async_watchers)"
+.IP "Processing signals: O(max_signal_number)" 4
+.IX Item "Processing signals: O(max_signal_number)"
+.PD
+Sending involves a system call \fIiff\fR there were no other \f(CW\*(C`ev_async_send\*(C'\fR
+calls in the current loop iteration. Checking for async and signal events
+involves iterating over all running async watchers or all signal numbers.
+.SH "PORTING FROM LIBEV 3.X TO 4.X"
+.IX Header "PORTING FROM LIBEV 3.X TO 4.X"
+The major version 4 introduced some incompatible changes to the \s-1API\s0.
+.PP
+At the moment, the \f(CW\*(C`ev.h\*(C'\fR header file provides compatibility definitions
+for all changes, so most programs should still compile. The compatibility
+layer might be removed in later versions of libev, so better update to the
+new \s-1API\s0 early than late.
+.ie n .IP """EV_COMPAT3"" backwards compatibility mechanism" 4
+.el .IP "\f(CWEV_COMPAT3\fR backwards compatibility mechanism" 4
+.IX Item "EV_COMPAT3 backwards compatibility mechanism"
+The backward compatibility mechanism can be controlled by
+\&\f(CW\*(C`EV_COMPAT3\*(C'\fR. See \*(L"\s-1MACROS\s0\*(R" in \s-1PREPROCESSOR\s0 \s-1SYMBOLS\s0 in the \s-1EMBEDDING\s0
+section.
+.ie n .IP """ev_default_destroy"" and ""ev_default_fork"" have been removed" 4
+.el .IP "\f(CWev_default_destroy\fR and \f(CWev_default_fork\fR have been removed" 4
+.IX Item "ev_default_destroy and ev_default_fork have been removed"
+These calls can be replaced easily by their \f(CW\*(C`ev_loop_xxx\*(C'\fR counterparts:
+.Sp
+.Vb 2
+\& ev_loop_destroy (EV_DEFAULT_UC);
+\& ev_loop_fork (EV_DEFAULT);
+.Ve
+.IP "function/symbol renames" 4
+.IX Item "function/symbol renames"
+A number of functions and symbols have been renamed:
+.Sp
+.Vb 3
+\& ev_loop => ev_run
+\& EVLOOP_NONBLOCK => EVRUN_NOWAIT
+\& EVLOOP_ONESHOT => EVRUN_ONCE
+\&
+\& ev_unloop => ev_break
+\& EVUNLOOP_CANCEL => EVBREAK_CANCEL
+\& EVUNLOOP_ONE => EVBREAK_ONE
+\& EVUNLOOP_ALL => EVBREAK_ALL
+\&
+\& EV_TIMEOUT => EV_TIMER
+\&
+\& ev_loop_count => ev_iteration
+\& ev_loop_depth => ev_depth
+\& ev_loop_verify => ev_verify
+.Ve
+.Sp
+Most functions working on \f(CW\*(C`struct ev_loop\*(C'\fR objects don't have an
+\&\f(CW\*(C`ev_loop_\*(C'\fR prefix, so it was removed; \f(CW\*(C`ev_loop\*(C'\fR, \f(CW\*(C`ev_unloop\*(C'\fR and
+associated constants have been renamed to not collide with the \f(CW\*(C`struct
+ev_loop\*(C'\fR anymore and \f(CW\*(C`EV_TIMER\*(C'\fR now follows the same naming scheme
+as all other watcher types. Note that \f(CW\*(C`ev_loop_fork\*(C'\fR is still called
+\&\f(CW\*(C`ev_loop_fork\*(C'\fR because it would otherwise clash with the \f(CW\*(C`ev_fork\*(C'\fR
+typedef.
+.ie n .IP """EV_MINIMAL"" mechanism replaced by ""EV_FEATURES""" 4
+.el .IP "\f(CWEV_MINIMAL\fR mechanism replaced by \f(CWEV_FEATURES\fR" 4
+.IX Item "EV_MINIMAL mechanism replaced by EV_FEATURES"
+The preprocessor symbol \f(CW\*(C`EV_MINIMAL\*(C'\fR has been replaced by a different
+mechanism, \f(CW\*(C`EV_FEATURES\*(C'\fR. Programs using \f(CW\*(C`EV_MINIMAL\*(C'\fR usually compile
+and work, but the library code will of course be larger.
+.SH "GLOSSARY"
+.IX Header "GLOSSARY"
+.IP "active" 4
+.IX Item "active"
+A watcher is active as long as it has been started and not yet stopped.
+See \*(L"\s-1WATCHER\s0 \s-1STATES\s0\*(R" for details.
+.IP "application" 4
+.IX Item "application"
+In this document, an application is whatever is using libev.
+.IP "backend" 4
+.IX Item "backend"
+The part of the code dealing with the operating system interfaces.
+.IP "callback" 4
+.IX Item "callback"
+The address of a function that is called when some event has been
+detected. Callbacks are being passed the event loop, the watcher that
+received the event, and the actual event bitset.
+.IP "callback/watcher invocation" 4
+.IX Item "callback/watcher invocation"
+The act of calling the callback associated with a watcher.
+.IP "event" 4
+.IX Item "event"
+A change of state of some external event, such as data now being available
+for reading on a file descriptor, time having passed or simply not having
+any other events happening anymore.
+.Sp
+In libev, events are represented as single bits (such as \f(CW\*(C`EV_READ\*(C'\fR or
+\&\f(CW\*(C`EV_TIMER\*(C'\fR).
+.IP "event library" 4
+.IX Item "event library"
+A software package implementing an event model and loop.
+.IP "event loop" 4
+.IX Item "event loop"
+An entity that handles and processes external events and converts them
+into callback invocations.
+.IP "event model" 4
+.IX Item "event model"
+The model used to describe how an event loop handles and processes
+watchers and events.
+.IP "pending" 4
+.IX Item "pending"
+A watcher is pending as soon as the corresponding event has been
+detected. See \*(L"\s-1WATCHER\s0 \s-1STATES\s0\*(R" for details.
+.IP "real time" 4
+.IX Item "real time"
+The physical time that is observed. It is apparently strictly monotonic :)
+.IP "wall-clock time" 4
+.IX Item "wall-clock time"
+The time and date as shown on clocks. Unlike real time, it can actually
+be wrong and jump forwards and backwards, e.g. when you adjust your
+clock.
+.IP "watcher" 4
+.IX Item "watcher"
+A data structure that describes interest in certain events. Watchers need
+to be started (attached to an event loop) before they can receive events.
+.SH "AUTHOR"
+.IX Header "AUTHOR"
+Marc Lehmann <libev@schmorp.de>, with repeated corrections by Mikael
+Magnusson and Emanuele Giaquinta, and minor corrections by many others.
--- /dev/null
+/*
+ * libev event processing core, watcher management
+ *
+ * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+/* this big block deduces configuration from config.h */
+#ifndef EV_STANDALONE
+# ifdef EV_CONFIG_H
+# include EV_CONFIG_H
+# else
+# include "config.h"
+# endif
+
+# if HAVE_CLOCK_SYSCALL
+# ifndef EV_USE_CLOCK_SYSCALL
+# define EV_USE_CLOCK_SYSCALL 1
+# ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME 0
+# endif
+# ifndef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 1
+# endif
+# endif
+# elif !defined(EV_USE_CLOCK_SYSCALL)
+# define EV_USE_CLOCK_SYSCALL 0
+# endif
+
+# if HAVE_CLOCK_GETTIME
+# ifndef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 1
+# endif
+# ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME 0
+# endif
+# else
+# ifndef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 0
+# endif
+# ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME 0
+# endif
+# endif
+
+# if HAVE_NANOSLEEP
+# ifndef EV_USE_NANOSLEEP
+# define EV_USE_NANOSLEEP EV_FEATURE_OS
+# endif
+# else
+# undef EV_USE_NANOSLEEP
+# define EV_USE_NANOSLEEP 0
+# endif
+
+# if HAVE_SELECT && HAVE_SYS_SELECT_H
+# ifndef EV_USE_SELECT
+# define EV_USE_SELECT EV_FEATURE_BACKENDS
+# endif
+# else
+# undef EV_USE_SELECT
+# define EV_USE_SELECT 0
+# endif
+
+# if HAVE_POLL && HAVE_POLL_H
+# ifndef EV_USE_POLL
+# define EV_USE_POLL EV_FEATURE_BACKENDS
+# endif
+# else
+# undef EV_USE_POLL
+# define EV_USE_POLL 0
+# endif
+
+# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
+# ifndef EV_USE_EPOLL
+# define EV_USE_EPOLL EV_FEATURE_BACKENDS
+# endif
+# else
+# undef EV_USE_EPOLL
+# define EV_USE_EPOLL 0
+# endif
+
+# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
+# ifndef EV_USE_KQUEUE
+# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
+# endif
+# else
+# undef EV_USE_KQUEUE
+# define EV_USE_KQUEUE 0
+# endif
+
+# if HAVE_PORT_H && HAVE_PORT_CREATE
+# ifndef EV_USE_PORT
+# define EV_USE_PORT EV_FEATURE_BACKENDS
+# endif
+# else
+# undef EV_USE_PORT
+# define EV_USE_PORT 0
+# endif
+
+# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
+# ifndef EV_USE_INOTIFY
+# define EV_USE_INOTIFY EV_FEATURE_OS
+# endif
+# else
+# undef EV_USE_INOTIFY
+# define EV_USE_INOTIFY 0
+# endif
+
+# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
+# ifndef EV_USE_SIGNALFD
+# define EV_USE_SIGNALFD EV_FEATURE_OS
+# endif
+# else
+# undef EV_USE_SIGNALFD
+# define EV_USE_SIGNALFD 0
+# endif
+
+# if HAVE_EVENTFD
+# ifndef EV_USE_EVENTFD
+# define EV_USE_EVENTFD EV_FEATURE_OS
+# endif
+# else
+# undef EV_USE_EVENTFD
+# define EV_USE_EVENTFD 0
+# endif
+
+#endif
+
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stddef.h>
+
+#include <stdio.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <time.h>
+#include <limits.h>
+
+#include <signal.h>
+
+#ifdef EV_H
+# include EV_H
+#else
+# include "ev.h"
+#endif
+
+EV_CPP(extern "C" {)
+
+#ifndef _WIN32
+# include <sys/time.h>
+# include <sys/wait.h>
+# include <unistd.h>
+#else
+# include <io.h>
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# ifndef EV_SELECT_IS_WINSOCKET
+# define EV_SELECT_IS_WINSOCKET 1
+# endif
+# undef EV_AVOID_STDIO
+#endif
+
+/* OS X, in its infinite idiocy, actually HARDCODES
+ * a limit of 1024 into their select. Where people have brains,
+ * OS X engineers apparently have a vacuum. Or maybe they were
+ * ordered to have a vacuum, or they do anything for money.
+ * This might help. Or not.
+ */
+#define _DARWIN_UNLIMITED_SELECT 1
+
+/* this block tries to deduce configuration from header-defined symbols and defaults */
+
+/* try to deduce the maximum number of signals on this platform */
+#if defined (EV_NSIG)
+/* use what's provided */
+#elif defined (NSIG)
+# define EV_NSIG (NSIG)
+#elif defined(_NSIG)
+# define EV_NSIG (_NSIG)
+#elif defined (SIGMAX)
+# define EV_NSIG (SIGMAX+1)
+#elif defined (SIG_MAX)
+# define EV_NSIG (SIG_MAX+1)
+#elif defined (_SIG_MAX)
+# define EV_NSIG (_SIG_MAX+1)
+#elif defined (MAXSIG)
+# define EV_NSIG (MAXSIG+1)
+#elif defined (MAX_SIG)
+# define EV_NSIG (MAX_SIG+1)
+#elif defined (SIGARRAYSIZE)
+# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
+#elif defined (_sys_nsig)
+# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
+#else
+# error "unable to find value for NSIG, please report"
+/* to make it compile regardless, just remove the above line, */
+/* but consider reporting it, too! :) */
+# define EV_NSIG 65
+#endif
+
+#ifndef EV_USE_CLOCK_SYSCALL
+# if __linux && __GLIBC__ >= 2
+# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
+# else
+# define EV_USE_CLOCK_SYSCALL 0
+# endif
+#endif
+
+#ifndef EV_USE_MONOTONIC
+# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
+# define EV_USE_MONOTONIC EV_FEATURE_OS
+# else
+# define EV_USE_MONOTONIC 0
+# endif
+#endif
+
+#ifndef EV_USE_REALTIME
+# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
+#endif
+
+#ifndef EV_USE_NANOSLEEP
+# if _POSIX_C_SOURCE >= 199309L
+# define EV_USE_NANOSLEEP EV_FEATURE_OS
+# else
+# define EV_USE_NANOSLEEP 0
+# endif
+#endif
+
+#ifndef EV_USE_SELECT
+# define EV_USE_SELECT EV_FEATURE_BACKENDS
+#endif
+
+#ifndef EV_USE_POLL
+# ifdef _WIN32
+# define EV_USE_POLL 0
+# else
+# define EV_USE_POLL EV_FEATURE_BACKENDS
+# endif
+#endif
+
+#ifndef EV_USE_EPOLL
+# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
+# define EV_USE_EPOLL EV_FEATURE_BACKENDS
+# else
+# define EV_USE_EPOLL 0
+# endif
+#endif
+
+#ifndef EV_USE_KQUEUE
+# define EV_USE_KQUEUE 0
+#endif
+
+#ifndef EV_USE_PORT
+# define EV_USE_PORT 0
+#endif
+
+#ifndef EV_USE_INOTIFY
+# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
+# define EV_USE_INOTIFY EV_FEATURE_OS
+# else
+# define EV_USE_INOTIFY 0
+# endif
+#endif
+
+#ifndef EV_PID_HASHSIZE
+# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
+#endif
+
+#ifndef EV_INOTIFY_HASHSIZE
+# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
+#endif
+
+#ifndef EV_USE_EVENTFD
+# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
+# define EV_USE_EVENTFD EV_FEATURE_OS
+# else
+# define EV_USE_EVENTFD 0
+# endif
+#endif
+
+#ifndef EV_USE_SIGNALFD
+# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
+# define EV_USE_SIGNALFD EV_FEATURE_OS
+# else
+# define EV_USE_SIGNALFD 0
+# endif
+#endif
+
+#if 0 /* debugging */
+# define EV_VERIFY 3
+# define EV_USE_4HEAP 1
+# define EV_HEAP_CACHE_AT 1
+#endif
+
+#ifndef EV_VERIFY
+# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
+#endif
+
+#ifndef EV_USE_4HEAP
+# define EV_USE_4HEAP EV_FEATURE_DATA
+#endif
+
+#ifndef EV_HEAP_CACHE_AT
+# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
+#endif
+
+/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
+/* which makes programs even slower. might work on other unices, too. */
+#if EV_USE_CLOCK_SYSCALL
+# include <syscall.h>
+# ifdef SYS_clock_gettime
+# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
+# undef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 1
+# else
+# undef EV_USE_CLOCK_SYSCALL
+# define EV_USE_CLOCK_SYSCALL 0
+# endif
+#endif
+
+/* this block fixes any misconfiguration where we know we run into trouble otherwise */
+
+#ifdef _AIX
+/* AIX has a completely broken poll.h header */
+# undef EV_USE_POLL
+# define EV_USE_POLL 0
+#endif
+
+#ifndef CLOCK_MONOTONIC
+# undef EV_USE_MONOTONIC
+# define EV_USE_MONOTONIC 0
+#endif
+
+#ifndef CLOCK_REALTIME
+# undef EV_USE_REALTIME
+# define EV_USE_REALTIME 0
+#endif
+
+#if !EV_STAT_ENABLE
+# undef EV_USE_INOTIFY
+# define EV_USE_INOTIFY 0
+#endif
+
+#if !EV_USE_NANOSLEEP
+/* hp-ux has it in sys/time.h, which we unconditionally include above */
+# if !defined(_WIN32) && !defined(__hpux)
+# include <sys/select.h>
+# endif
+#endif
+
+#if EV_USE_INOTIFY
+# include <sys/statfs.h>
+# include <sys/inotify.h>
+/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
+# ifndef IN_DONT_FOLLOW
+# undef EV_USE_INOTIFY
+# define EV_USE_INOTIFY 0
+# endif
+#endif
+
+#if EV_SELECT_IS_WINSOCKET
+# include <winsock.h>
+#endif
+
+#if EV_USE_EVENTFD
+/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
+# include <stdint.h>
+# ifndef EFD_NONBLOCK
+# define EFD_NONBLOCK O_NONBLOCK
+# endif
+# ifndef EFD_CLOEXEC
+# ifdef O_CLOEXEC
+# define EFD_CLOEXEC O_CLOEXEC
+# else
+# define EFD_CLOEXEC 02000000
+# endif
+# endif
+EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
+#endif
+
+#if EV_USE_SIGNALFD
+/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
+# include <stdint.h>
+# ifndef SFD_NONBLOCK
+# define SFD_NONBLOCK O_NONBLOCK
+# endif
+# ifndef SFD_CLOEXEC
+# ifdef O_CLOEXEC
+# define SFD_CLOEXEC O_CLOEXEC
+# else
+# define SFD_CLOEXEC 02000000
+# endif
+# endif
+EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
+
+struct signalfd_siginfo
+{
+ uint32_t ssi_signo;
+ char pad[128 - sizeof (uint32_t)];
+};
+#endif
+
+/**/
+
+#if EV_VERIFY >= 3
+# define EV_FREQUENT_CHECK ev_verify (EV_A)
+#else
+# define EV_FREQUENT_CHECK do { } while (0)
+#endif
+
+/*
+ * This is used to avoid floating point rounding problems.
+ * It is added to ev_rt_now when scheduling periodics
+ * to ensure progress, time-wise, even when rounding
+ * errors are against us.
+ * This value is good at least till the year 4000.
+ * Better solutions welcome.
+ */
+#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
+
+#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
+#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
+
+#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
+#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
+
+#if __GNUC__ >= 4
+# define expect(expr,value) __builtin_expect ((expr),(value))
+# define noinline __attribute__ ((noinline))
+#else
+# define expect(expr,value) (expr)
+# define noinline
+# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
+# define inline
+# endif
+#endif
+
+#define expect_false(expr) expect ((expr) != 0, 0)
+#define expect_true(expr) expect ((expr) != 0, 1)
+#define inline_size static inline
+
+#if EV_FEATURE_CODE
+# define inline_speed static inline
+#else
+# define inline_speed static noinline
+#endif
+
+#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
+
+#if EV_MINPRI == EV_MAXPRI
+# define ABSPRI(w) (((W)w), 0)
+#else
+# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
+#endif
+
+#define EMPTY /* required for microsofts broken pseudo-c compiler */
+#define EMPTY2(a,b) /* used to suppress some warnings */
+
+typedef ev_watcher *W;
+typedef ev_watcher_list *WL;
+typedef ev_watcher_time *WT;
+
+#define ev_active(w) ((W)(w))->active
+#define ev_at(w) ((WT)(w))->at
+
+#if EV_USE_REALTIME
+/* sig_atomic_t is used to avoid per-thread variables or locking but still */
+/* giving it a reasonably high chance of working on typical architectures */
+static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
+#endif
+
+#if EV_USE_MONOTONIC
+static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
+#endif
+
+#ifndef EV_FD_TO_WIN32_HANDLE
+# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
+#endif
+#ifndef EV_WIN32_HANDLE_TO_FD
+# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
+#endif
+#ifndef EV_WIN32_CLOSE_FD
+# define EV_WIN32_CLOSE_FD(fd) close (fd)
+#endif
+
+#ifdef _WIN32
+# include "ev_win32.c"
+#endif
+
+/*****************************************************************************/
+
+#ifdef __linux
+# include <sys/utsname.h>
+#endif
+
+static unsigned int noinline
+ev_linux_version (void)
+{
+#ifdef __linux
+ unsigned int v = 0;
+ struct utsname buf;
+ int i;
+ char *p = buf.release;
+
+ if (uname (&buf))
+ return 0;
+
+ for (i = 3+1; --i; )
+ {
+ unsigned int c = 0;
+
+ for (;;)
+ {
+ if (*p >= '0' && *p <= '9')
+ c = c * 10 + *p++ - '0';
+ else
+ {
+ p += *p == '.';
+ break;
+ }
+ }
+
+ v = (v << 8) | c;
+ }
+
+ return v;
+#else
+ return 0;
+#endif
+}
+
+/*****************************************************************************/
+
+#if EV_AVOID_STDIO
+static void noinline
+ev_printerr (const char *msg)
+{
+ write (STDERR_FILENO, msg, strlen (msg));
+}
+#endif
+
+static void (*syserr_cb)(const char *msg);
+
+void
+ev_set_syserr_cb (void (*cb)(const char *msg))
+{
+ syserr_cb = cb;
+}
+
+static void noinline
+ev_syserr (const char *msg)
+{
+ if (!msg)
+ msg = "(libev) system error";
+
+ if (syserr_cb)
+ syserr_cb (msg);
+ else
+ {
+#if EV_AVOID_STDIO
+ ev_printerr (msg);
+ ev_printerr (": ");
+ ev_printerr (strerror (errno));
+ ev_printerr ("\n");
+#else
+ perror (msg);
+#endif
+ abort ();
+ }
+}
+
+static void *
+ev_realloc_emul (void *ptr, long size)
+{
+#if __GLIBC__
+ return realloc (ptr, size);
+#else
+ /* some systems, notably openbsd and darwin, fail to properly
+ * implement realloc (x, 0) (as required by both ansi c-89 and
+ * the single unix specification, so work around them here.
+ */
+
+ if (size)
+ return realloc (ptr, size);
+
+ free (ptr);
+ return 0;
+#endif
+}
+
+static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
+
+void
+ev_set_allocator (void *(*cb)(void *ptr, long size))
+{
+ alloc = cb;
+}
+
+inline_speed void *
+ev_realloc (void *ptr, long size)
+{
+ ptr = alloc (ptr, size);
+
+ if (!ptr && size)
+ {
+#if EV_AVOID_STDIO
+ ev_printerr ("(libev) memory allocation failed, aborting.\n");
+#else
+ fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
+#endif
+ abort ();
+ }
+
+ return ptr;
+}
+
+#define ev_malloc(size) ev_realloc (0, (size))
+#define ev_free(ptr) ev_realloc ((ptr), 0)
+
+/*****************************************************************************/
+
+/* set in reify when reification needed */
+#define EV_ANFD_REIFY 1
+
+/* file descriptor info structure */
+typedef struct
+{
+ WL head;
+ unsigned char events; /* the events watched for */
+ unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
+ unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
+ unsigned char unused;
+#if EV_USE_EPOLL
+ unsigned int egen; /* generation counter to counter epoll bugs */
+#endif
+#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
+ SOCKET handle;
+#endif
+#if EV_USE_IOCP
+ OVERLAPPED or, ow;
+#endif
+} ANFD;
+
+/* stores the pending event set for a given watcher */
+typedef struct
+{
+ W w;
+ int events; /* the pending event set for the given watcher */
+} ANPENDING;
+
+#if EV_USE_INOTIFY
+/* hash table entry per inotify-id */
+typedef struct
+{
+ WL head;
+} ANFS;
+#endif
+
+/* Heap Entry */
+#if EV_HEAP_CACHE_AT
+ /* a heap element */
+ typedef struct {
+ ev_tstamp at;
+ WT w;
+ } ANHE;
+
+ #define ANHE_w(he) (he).w /* access watcher, read-write */
+ #define ANHE_at(he) (he).at /* access cached at, read-only */
+ #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
+#else
+ /* a heap element */
+ typedef WT ANHE;
+
+ #define ANHE_w(he) (he)
+ #define ANHE_at(he) (he)->at
+ #define ANHE_at_cache(he)
+#endif
+
+#if EV_MULTIPLICITY
+
+ struct ev_loop
+ {
+ ev_tstamp ev_rt_now;
+ #define ev_rt_now ((loop)->ev_rt_now)
+ #define VAR(name,decl) decl;
+ #include "ev_vars.h"
+ #undef VAR
+ };
+ #include "ev_wrap.h"
+
+ static struct ev_loop default_loop_struct;
+ struct ev_loop *ev_default_loop_ptr;
+
+#else
+
+ ev_tstamp ev_rt_now;
+ #define VAR(name,decl) static decl;
+ #include "ev_vars.h"
+ #undef VAR
+
+ static int ev_default_loop_ptr;
+
+#endif
+
+#if EV_FEATURE_API
+# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
+# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
+# define EV_INVOKE_PENDING invoke_cb (EV_A)
+#else
+# define EV_RELEASE_CB (void)0
+# define EV_ACQUIRE_CB (void)0
+# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
+#endif
+
+#define EVBREAK_RECURSE 0x80
+
+/*****************************************************************************/
+
+#ifndef EV_HAVE_EV_TIME
+ev_tstamp
+ev_time (void)
+{
+#if EV_USE_REALTIME
+ if (expect_true (have_realtime))
+ {
+ struct timespec ts;
+ clock_gettime (CLOCK_REALTIME, &ts);
+ return ts.tv_sec + ts.tv_nsec * 1e-9;
+ }
+#endif
+
+ struct timeval tv;
+ gettimeofday (&tv, 0);
+ return tv.tv_sec + tv.tv_usec * 1e-6;
+}
+#endif
+
+inline_size ev_tstamp
+get_clock (void)
+{
+#if EV_USE_MONOTONIC
+ if (expect_true (have_monotonic))
+ {
+ struct timespec ts;
+ clock_gettime (CLOCK_MONOTONIC, &ts);
+ return ts.tv_sec + ts.tv_nsec * 1e-9;
+ }
+#endif
+
+ return ev_time ();
+}
+
+#if EV_MULTIPLICITY
+ev_tstamp
+ev_now (EV_P)
+{
+ return ev_rt_now;
+}
+#endif
+
+void
+ev_sleep (ev_tstamp delay)
+{
+ if (delay > 0.)
+ {
+#if EV_USE_NANOSLEEP
+ struct timespec ts;
+
+ EV_TS_SET (ts, delay);
+ nanosleep (&ts, 0);
+#elif defined(_WIN32)
+ Sleep ((unsigned long)(delay * 1e3));
+#else
+ struct timeval tv;
+
+ /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
+ /* something not guaranteed by newer posix versions, but guaranteed */
+ /* by older ones */
+ EV_TV_SET (tv, delay);
+ select (0, 0, 0, 0, &tv);
+#endif
+ }
+}
+
+inline_speed int
+ev_timeout_to_ms (ev_tstamp timeout)
+{
+ int ms = timeout * 1000. + .999999;
+
+ return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
+}
+
+/*****************************************************************************/
+
+#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
+
+/* find a suitable new size for the given array, */
+/* hopefully by rounding to a nice-to-malloc size */
+inline_size int
+array_nextsize (int elem, int cur, int cnt)
+{
+ int ncur = cur + 1;
+
+ do
+ ncur <<= 1;
+ while (cnt > ncur);
+
+ /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
+ if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
+ {
+ ncur *= elem;
+ ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
+ ncur = ncur - sizeof (void *) * 4;
+ ncur /= elem;
+ }
+
+ return ncur;
+}
+
+static noinline void *
+array_realloc (int elem, void *base, int *cur, int cnt)
+{
+ *cur = array_nextsize (elem, *cur, cnt);
+ return ev_realloc (base, elem * *cur);
+}
+
+#define array_init_zero(base,count) \
+ memset ((void *)(base), 0, sizeof (*(base)) * (count))
+
+#define array_needsize(type,base,cur,cnt,init) \
+ if (expect_false ((cnt) > (cur))) \
+ { \
+ int ocur_ = (cur); \
+ (base) = (type *)array_realloc \
+ (sizeof (type), (base), &(cur), (cnt)); \
+ init ((base) + (ocur_), (cur) - ocur_); \
+ }
+
+#if 0
+#define array_slim(type,stem) \
+ if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
+ { \
+ stem ## max = array_roundsize (stem ## cnt >> 1); \
+ base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
+ fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
+ }
+#endif
+
+#define array_free(stem, idx) \
+ ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
+
+/*****************************************************************************/
+
+/* dummy callback for pending events */
+static void noinline
+pendingcb (EV_P_ ev_prepare *w, int revents)
+{
+}
+
+void noinline
+ev_feed_event (EV_P_ void *w, int revents)
+{
+ W w_ = (W)w;
+ int pri = ABSPRI (w_);
+
+ if (expect_false (w_->pending))
+ pendings [pri][w_->pending - 1].events |= revents;
+ else
+ {
+ w_->pending = ++pendingcnt [pri];
+ array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
+ pendings [pri][w_->pending - 1].w = w_;
+ pendings [pri][w_->pending - 1].events = revents;
+ }
+}
+
+inline_speed void
+feed_reverse (EV_P_ W w)
+{
+ array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
+ rfeeds [rfeedcnt++] = w;
+}
+
+inline_size void
+feed_reverse_done (EV_P_ int revents)
+{
+ do
+ ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
+ while (rfeedcnt);
+}
+
+inline_speed void
+queue_events (EV_P_ W *events, int eventcnt, int type)
+{
+ int i;
+
+ for (i = 0; i < eventcnt; ++i)
+ ev_feed_event (EV_A_ events [i], type);
+}
+
+/*****************************************************************************/
+
+inline_speed void
+fd_event_nocheck (EV_P_ int fd, int revents)
+{
+ ANFD *anfd = anfds + fd;
+ ev_io *w;
+
+ for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
+ {
+ int ev = w->events & revents;
+
+ if (ev)
+ ev_feed_event (EV_A_ (W)w, ev);
+ }
+}
+
+/* do not submit kernel events for fds that have reify set */
+/* because that means they changed while we were polling for new events */
+inline_speed void
+fd_event (EV_P_ int fd, int revents)
+{
+ ANFD *anfd = anfds + fd;
+
+ if (expect_true (!anfd->reify))
+ fd_event_nocheck (EV_A_ fd, revents);
+}
+
+void
+ev_feed_fd_event (EV_P_ int fd, int revents)
+{
+ if (fd >= 0 && fd < anfdmax)
+ fd_event_nocheck (EV_A_ fd, revents);
+}
+
+/* make sure the external fd watch events are in-sync */
+/* with the kernel/libev internal state */
+inline_size void
+fd_reify (EV_P)
+{
+ int i;
+
+#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
+ for (i = 0; i < fdchangecnt; ++i)
+ {
+ int fd = fdchanges [i];
+ ANFD *anfd = anfds + fd;
+
+ if (anfd->reify & EV__IOFDSET)
+ {
+ SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
+
+ if (handle != anfd->handle)
+ {
+ unsigned long arg;
+
+ assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
+
+ /* handle changed, but fd didn't - we need to do it in two steps */
+ backend_modify (EV_A_ fd, anfd->events, 0);
+ anfd->events = 0;
+ anfd->handle = handle;
+ }
+ }
+ }
+#endif
+
+ for (i = 0; i < fdchangecnt; ++i)
+ {
+ int fd = fdchanges [i];
+ ANFD *anfd = anfds + fd;
+ ev_io *w;
+
+ unsigned char o_events = anfd->events;
+ unsigned char o_reify = anfd->reify;
+
+ anfd->reify = 0;
+
+ /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
+ {
+ anfd->events = 0;
+
+ for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
+ anfd->events |= (unsigned char)w->events;
+
+ if (o_events != anfd->events)
+ o_reify = EV__IOFDSET; /* actually |= */
+ }
+
+ if (o_reify & EV__IOFDSET)
+ backend_modify (EV_A_ fd, o_events, anfd->events);
+ }
+
+ fdchangecnt = 0;
+}
+
+/* something about the given fd changed */
+inline_size void
+fd_change (EV_P_ int fd, int flags)
+{
+ unsigned char reify = anfds [fd].reify;
+ anfds [fd].reify |= flags;
+
+ if (expect_true (!reify))
+ {
+ ++fdchangecnt;
+ array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
+ fdchanges [fdchangecnt - 1] = fd;
+ }
+}
+
+/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
+inline_speed void
+fd_kill (EV_P_ int fd)
+{
+ ev_io *w;
+
+ while ((w = (ev_io *)anfds [fd].head))
+ {
+ ev_io_stop (EV_A_ w);
+ ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
+ }
+}
+
+/* check whether the given fd is actually valid, for error recovery */
+inline_size int
+fd_valid (int fd)
+{
+#ifdef _WIN32
+ return EV_FD_TO_WIN32_HANDLE (fd) != -1;
+#else
+ return fcntl (fd, F_GETFD) != -1;
+#endif
+}
+
+/* called on EBADF to verify fds */
+static void noinline
+fd_ebadf (EV_P)
+{
+ int fd;
+
+ for (fd = 0; fd < anfdmax; ++fd)
+ if (anfds [fd].events)
+ if (!fd_valid (fd) && errno == EBADF)
+ fd_kill (EV_A_ fd);
+}
+
+/* called on ENOMEM in select/poll to kill some fds and retry */
+static void noinline
+fd_enomem (EV_P)
+{
+ int fd;
+
+ for (fd = anfdmax; fd--; )
+ if (anfds [fd].events)
+ {
+ fd_kill (EV_A_ fd);
+ break;
+ }
+}
+
+/* usually called after fork if backend needs to re-arm all fds from scratch */
+static void noinline
+fd_rearm_all (EV_P)
+{
+ int fd;
+
+ for (fd = 0; fd < anfdmax; ++fd)
+ if (anfds [fd].events)
+ {
+ anfds [fd].events = 0;
+ anfds [fd].emask = 0;
+ fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
+ }
+}
+
+/* used to prepare libev internal fd's */
+/* this is not fork-safe */
+inline_speed void
+fd_intern (int fd)
+{
+#ifdef _WIN32
+ unsigned long arg = 1;
+ ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
+#else
+ fcntl (fd, F_SETFD, FD_CLOEXEC);
+ fcntl (fd, F_SETFL, O_NONBLOCK);
+#endif
+}
+
+/*****************************************************************************/
+
+/*
+ * the heap functions want a real array index. array index 0 is guaranteed to not
+ * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
+ * the branching factor of the d-tree.
+ */
+
+/*
+ * at the moment we allow libev the luxury of two heaps,
+ * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
+ * which is more cache-efficient.
+ * the difference is about 5% with 50000+ watchers.
+ */
+#if EV_USE_4HEAP
+
+#define DHEAP 4
+#define HEAP0 (DHEAP - 1) /* index of first element in heap */
+#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
+#define UPHEAP_DONE(p,k) ((p) == (k))
+
+/* away from the root */
+inline_speed void
+downheap (ANHE *heap, int N, int k)
+{
+ ANHE he = heap [k];
+ ANHE *E = heap + N + HEAP0;
+
+ for (;;)
+ {
+ ev_tstamp minat;
+ ANHE *minpos;
+ ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
+
+ /* find minimum child */
+ if (expect_true (pos + DHEAP - 1 < E))
+ {
+ /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
+ if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
+ if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
+ if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
+ }
+ else if (pos < E)
+ {
+ /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
+ if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
+ if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
+ if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
+ }
+ else
+ break;
+
+ if (ANHE_at (he) <= minat)
+ break;
+
+ heap [k] = *minpos;
+ ev_active (ANHE_w (*minpos)) = k;
+
+ k = minpos - heap;
+ }
+
+ heap [k] = he;
+ ev_active (ANHE_w (he)) = k;
+}
+
+#else /* 4HEAP */
+
+#define HEAP0 1
+#define HPARENT(k) ((k) >> 1)
+#define UPHEAP_DONE(p,k) (!(p))
+
+/* away from the root */
+inline_speed void
+downheap (ANHE *heap, int N, int k)
+{
+ ANHE he = heap [k];
+
+ for (;;)
+ {
+ int c = k << 1;
+
+ if (c >= N + HEAP0)
+ break;
+
+ c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
+ ? 1 : 0;
+
+ if (ANHE_at (he) <= ANHE_at (heap [c]))
+ break;
+
+ heap [k] = heap [c];
+ ev_active (ANHE_w (heap [k])) = k;
+
+ k = c;
+ }
+
+ heap [k] = he;
+ ev_active (ANHE_w (he)) = k;
+}
+#endif
+
+/* towards the root */
+inline_speed void
+upheap (ANHE *heap, int k)
+{
+ ANHE he = heap [k];
+
+ for (;;)
+ {
+ int p = HPARENT (k);
+
+ if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
+ break;
+
+ heap [k] = heap [p];
+ ev_active (ANHE_w (heap [k])) = k;
+ k = p;
+ }
+
+ heap [k] = he;
+ ev_active (ANHE_w (he)) = k;
+}
+
+/* move an element suitably so it is in a correct place */
+inline_size void
+adjustheap (ANHE *heap, int N, int k)
+{
+ if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
+ upheap (heap, k);
+ else
+ downheap (heap, N, k);
+}
+
+/* rebuild the heap: this function is used only once and executed rarely */
+inline_size void
+reheap (ANHE *heap, int N)
+{
+ int i;
+
+ /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
+ /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
+ for (i = 0; i < N; ++i)
+ upheap (heap, i + HEAP0);
+}
+
+/*****************************************************************************/
+
+/* associate signal watchers to a signal signal */
+typedef struct
+{
+ EV_ATOMIC_T pending;
+#if EV_MULTIPLICITY
+ EV_P;
+#endif
+ WL head;
+} ANSIG;
+
+static ANSIG signals [EV_NSIG - 1];
+
+/*****************************************************************************/
+
+#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
+
+static void noinline
+evpipe_init (EV_P)
+{
+ if (!ev_is_active (&pipe_w))
+ {
+# if EV_USE_EVENTFD
+ evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
+ if (evfd < 0 && errno == EINVAL)
+ evfd = eventfd (0, 0);
+
+ if (evfd >= 0)
+ {
+ evpipe [0] = -1;
+ fd_intern (evfd); /* doing it twice doesn't hurt */
+ ev_io_set (&pipe_w, evfd, EV_READ);
+ }
+ else
+# endif
+ {
+ while (pipe (evpipe))
+ ev_syserr ("(libev) error creating signal/async pipe");
+
+ fd_intern (evpipe [0]);
+ fd_intern (evpipe [1]);
+ ev_io_set (&pipe_w, evpipe [0], EV_READ);
+ }
+
+ ev_io_start (EV_A_ &pipe_w);
+ ev_unref (EV_A); /* watcher should not keep loop alive */
+ }
+}
+
+inline_size void
+evpipe_write (EV_P_ EV_ATOMIC_T *flag)
+{
+ if (!*flag)
+ {
+ int old_errno = errno; /* save errno because write might clobber it */
+ char dummy;
+
+ *flag = 1;
+
+#if EV_USE_EVENTFD
+ if (evfd >= 0)
+ {
+ uint64_t counter = 1;
+ write (evfd, &counter, sizeof (uint64_t));
+ }
+ else
+#endif
+ /* win32 people keep sending patches that change this write() to send() */
+ /* and then run away. but send() is wrong, it wants a socket handle on win32 */
+ /* so when you think this write should be a send instead, please find out */
+ /* where your send() is from - it's definitely not the microsoft send, and */
+ /* tell me. thank you. */
+ write (evpipe [1], &dummy, 1);
+
+ errno = old_errno;
+ }
+}
+
+/* called whenever the libev signal pipe */
+/* got some events (signal, async) */
+static void
+pipecb (EV_P_ ev_io *iow, int revents)
+{
+ int i;
+
+#if EV_USE_EVENTFD
+ if (evfd >= 0)
+ {
+ uint64_t counter;
+ read (evfd, &counter, sizeof (uint64_t));
+ }
+ else
+#endif
+ {
+ char dummy;
+ /* see discussion in evpipe_write when you think this read should be recv in win32 */
+ read (evpipe [0], &dummy, 1);
+ }
+
+#if EV_SIGNAL_ENABLE
+ if (sig_pending)
+ {
+ sig_pending = 0;
+
+ for (i = EV_NSIG - 1; i--; )
+ if (expect_false (signals [i].pending))
+ ev_feed_signal_event (EV_A_ i + 1);
+ }
+#endif
+
+#if EV_ASYNC_ENABLE
+ if (async_pending)
+ {
+ async_pending = 0;
+
+ for (i = asynccnt; i--; )
+ if (asyncs [i]->sent)
+ {
+ asyncs [i]->sent = 0;
+ ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
+ }
+ }
+#endif
+}
+
+/*****************************************************************************/
+
+void
+ev_feed_signal (int signum)
+{
+#if EV_MULTIPLICITY
+ EV_P = signals [signum - 1].loop;
+
+ if (!EV_A)
+ return;
+#endif
+
+ signals [signum - 1].pending = 1;
+ evpipe_write (EV_A_ &sig_pending);
+}
+
+static void
+ev_sighandler (int signum)
+{
+#ifdef _WIN32
+ signal (signum, ev_sighandler);
+#endif
+
+ ev_feed_signal (signum);
+}
+
+void noinline
+ev_feed_signal_event (EV_P_ int signum)
+{
+ WL w;
+
+ if (expect_false (signum <= 0 || signum > EV_NSIG))
+ return;
+
+ --signum;
+
+#if EV_MULTIPLICITY
+ /* it is permissible to try to feed a signal to the wrong loop */
+ /* or, likely more useful, feeding a signal nobody is waiting for */
+
+ if (expect_false (signals [signum].loop != EV_A))
+ return;
+#endif
+
+ signals [signum].pending = 0;
+
+ for (w = signals [signum].head; w; w = w->next)
+ ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
+}
+
+#if EV_USE_SIGNALFD
+static void
+sigfdcb (EV_P_ ev_io *iow, int revents)
+{
+ struct signalfd_siginfo si[2], *sip; /* these structs are big */
+
+ for (;;)
+ {
+ ssize_t res = read (sigfd, si, sizeof (si));
+
+ /* not ISO-C, as res might be -1, but works with SuS */
+ for (sip = si; (char *)sip < (char *)si + res; ++sip)
+ ev_feed_signal_event (EV_A_ sip->ssi_signo);
+
+ if (res < (ssize_t)sizeof (si))
+ break;
+ }
+}
+#endif
+
+#endif
+
+/*****************************************************************************/
+
+#if EV_CHILD_ENABLE
+static WL childs [EV_PID_HASHSIZE];
+
+static ev_signal childev;
+
+#ifndef WIFCONTINUED
+# define WIFCONTINUED(status) 0
+#endif
+
+/* handle a single child status event */
+inline_speed void
+child_reap (EV_P_ int chain, int pid, int status)
+{
+ ev_child *w;
+ int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
+
+ for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
+ {
+ if ((w->pid == pid || !w->pid)
+ && (!traced || (w->flags & 1)))
+ {
+ ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
+ w->rpid = pid;
+ w->rstatus = status;
+ ev_feed_event (EV_A_ (W)w, EV_CHILD);
+ }
+ }
+}
+
+#ifndef WCONTINUED
+# define WCONTINUED 0
+#endif
+
+/* called on sigchld etc., calls waitpid */
+static void
+childcb (EV_P_ ev_signal *sw, int revents)
+{
+ int pid, status;
+
+ /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
+ if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
+ if (!WCONTINUED
+ || errno != EINVAL
+ || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
+ return;
+
+ /* make sure we are called again until all children have been reaped */
+ /* we need to do it this way so that the callback gets called before we continue */
+ ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
+
+ child_reap (EV_A_ pid, pid, status);
+ if ((EV_PID_HASHSIZE) > 1)
+ child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
+}
+
+#endif
+
+/*****************************************************************************/
+
+#if EV_USE_IOCP
+# include "ev_iocp.c"
+#endif
+#if EV_USE_PORT
+# include "ev_port.c"
+#endif
+#if EV_USE_KQUEUE
+# include "ev_kqueue.c"
+#endif
+#if EV_USE_EPOLL
+# include "ev_epoll.c"
+#endif
+#if EV_USE_POLL
+# include "ev_poll.c"
+#endif
+#if EV_USE_SELECT
+# include "ev_select.c"
+#endif
+
+int
+ev_version_major (void)
+{
+ return EV_VERSION_MAJOR;
+}
+
+int
+ev_version_minor (void)
+{
+ return EV_VERSION_MINOR;
+}
+
+/* return true if we are running with elevated privileges and should ignore env variables */
+int inline_size
+enable_secure (void)
+{
+#ifdef _WIN32
+ return 0;
+#else
+ return getuid () != geteuid ()
+ || getgid () != getegid ();
+#endif
+}
+
+unsigned int
+ev_supported_backends (void)
+{
+ unsigned int flags = 0;
+
+ if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
+ if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
+ if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
+ if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
+ if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
+
+ return flags;
+}
+
+unsigned int
+ev_recommended_backends (void)
+{
+ unsigned int flags = ev_supported_backends ();
+
+#ifndef __NetBSD__
+ /* kqueue is borked on everything but netbsd apparently */
+ /* it usually doesn't work correctly on anything but sockets and pipes */
+ flags &= ~EVBACKEND_KQUEUE;
+#endif
+#ifdef __APPLE__
+ /* only select works correctly on that "unix-certified" platform */
+ flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
+ flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
+#endif
+#ifdef __FreeBSD__
+ flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
+#endif
+
+ return flags;
+}
+
+unsigned int
+ev_embeddable_backends (void)
+{
+ int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
+
+ /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
+ if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
+ flags &= ~EVBACKEND_EPOLL;
+
+ return flags;
+}
+
+unsigned int
+ev_backend (EV_P)
+{
+ return backend;
+}
+
+#if EV_FEATURE_API
+unsigned int
+ev_iteration (EV_P)
+{
+ return loop_count;
+}
+
+unsigned int
+ev_depth (EV_P)
+{
+ return loop_depth;
+}
+
+void
+ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
+{
+ io_blocktime = interval;
+}
+
+void
+ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
+{
+ timeout_blocktime = interval;
+}
+
+void
+ev_set_userdata (EV_P_ void *data)
+{
+ userdata = data;
+}
+
+void *
+ev_userdata (EV_P)
+{
+ return userdata;
+}
+
+void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
+{
+ invoke_cb = invoke_pending_cb;
+}
+
+void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
+{
+ release_cb = release;
+ acquire_cb = acquire;
+}
+#endif
+
+/* initialise a loop structure, must be zero-initialised */
+static void noinline
+loop_init (EV_P_ unsigned int flags)
+{
+ if (!backend)
+ {
+ origflags = flags;
+
+#if EV_USE_REALTIME
+ if (!have_realtime)
+ {
+ struct timespec ts;
+
+ if (!clock_gettime (CLOCK_REALTIME, &ts))
+ have_realtime = 1;
+ }
+#endif
+
+#if EV_USE_MONOTONIC
+ if (!have_monotonic)
+ {
+ struct timespec ts;
+
+ if (!clock_gettime (CLOCK_MONOTONIC, &ts))
+ have_monotonic = 1;
+ }
+#endif
+
+ /* pid check not overridable via env */
+#ifndef _WIN32
+ if (flags & EVFLAG_FORKCHECK)
+ curpid = getpid ();
+#endif
+
+ if (!(flags & EVFLAG_NOENV)
+ && !enable_secure ()
+ && getenv ("LIBEV_FLAGS"))
+ flags = atoi (getenv ("LIBEV_FLAGS"));
+
+ ev_rt_now = ev_time ();
+ mn_now = get_clock ();
+ now_floor = mn_now;
+ rtmn_diff = ev_rt_now - mn_now;
+#if EV_FEATURE_API
+ invoke_cb = ev_invoke_pending;
+#endif
+
+ io_blocktime = 0.;
+ timeout_blocktime = 0.;
+ backend = 0;
+ backend_fd = -1;
+ sig_pending = 0;
+#if EV_ASYNC_ENABLE
+ async_pending = 0;
+#endif
+#if EV_USE_INOTIFY
+ fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
+#endif
+#if EV_USE_SIGNALFD
+ sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
+#endif
+
+ if (!(flags & EVBACKEND_MASK))
+ flags |= ev_recommended_backends ();
+
+#if EV_USE_IOCP
+ if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
+#endif
+#if EV_USE_PORT
+ if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
+#endif
+#if EV_USE_KQUEUE
+ if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
+#endif
+#if EV_USE_EPOLL
+ if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
+#endif
+#if EV_USE_POLL
+ if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
+#endif
+#if EV_USE_SELECT
+ if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
+#endif
+
+ ev_prepare_init (&pending_w, pendingcb);
+
+#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
+ ev_init (&pipe_w, pipecb);
+ ev_set_priority (&pipe_w, EV_MAXPRI);
+#endif
+ }
+}
+
+/* free up a loop structure */
+void
+ev_loop_destroy (EV_P)
+{
+ int i;
+
+#if EV_MULTIPLICITY
+ /* mimic free (0) */
+ if (!EV_A)
+ return;
+#endif
+
+#if EV_CLEANUP_ENABLE
+ /* queue cleanup watchers (and execute them) */
+ if (expect_false (cleanupcnt))
+ {
+ queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
+ EV_INVOKE_PENDING;
+ }
+#endif
+
+#if EV_CHILD_ENABLE
+ if (ev_is_active (&childev))
+ {
+ ev_ref (EV_A); /* child watcher */
+ ev_signal_stop (EV_A_ &childev);
+ }
+#endif
+
+ if (ev_is_active (&pipe_w))
+ {
+ /*ev_ref (EV_A);*/
+ /*ev_io_stop (EV_A_ &pipe_w);*/
+
+#if EV_USE_EVENTFD
+ if (evfd >= 0)
+ close (evfd);
+#endif
+
+ if (evpipe [0] >= 0)
+ {
+ EV_WIN32_CLOSE_FD (evpipe [0]);
+ EV_WIN32_CLOSE_FD (evpipe [1]);
+ }
+ }
+
+#if EV_USE_SIGNALFD
+ if (ev_is_active (&sigfd_w))
+ close (sigfd);
+#endif
+
+#if EV_USE_INOTIFY
+ if (fs_fd >= 0)
+ close (fs_fd);
+#endif
+
+ if (backend_fd >= 0)
+ close (backend_fd);
+
+#if EV_USE_IOCP
+ if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
+#endif
+#if EV_USE_PORT
+ if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
+#endif
+#if EV_USE_KQUEUE
+ if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
+#endif
+#if EV_USE_EPOLL
+ if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
+#endif
+#if EV_USE_POLL
+ if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
+#endif
+#if EV_USE_SELECT
+ if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
+#endif
+
+ for (i = NUMPRI; i--; )
+ {
+ array_free (pending, [i]);
+#if EV_IDLE_ENABLE
+ array_free (idle, [i]);
+#endif
+ }
+
+ ev_free (anfds); anfds = 0; anfdmax = 0;
+
+ /* have to use the microsoft-never-gets-it-right macro */
+ array_free (rfeed, EMPTY);
+ array_free (fdchange, EMPTY);
+ array_free (timer, EMPTY);
+#if EV_PERIODIC_ENABLE
+ array_free (periodic, EMPTY);
+#endif
+#if EV_FORK_ENABLE
+ array_free (fork, EMPTY);
+#endif
+#if EV_CLEANUP_ENABLE
+ array_free (cleanup, EMPTY);
+#endif
+ array_free (prepare, EMPTY);
+ array_free (check, EMPTY);
+#if EV_ASYNC_ENABLE
+ array_free (async, EMPTY);
+#endif
+
+ backend = 0;
+
+#if EV_MULTIPLICITY
+ if (ev_is_default_loop (EV_A))
+#endif
+ ev_default_loop_ptr = 0;
+#if EV_MULTIPLICITY
+ else
+ ev_free (EV_A);
+#endif
+}
+
+#if EV_USE_INOTIFY
+inline_size void infy_fork (EV_P);
+#endif
+
+inline_size void
+loop_fork (EV_P)
+{
+#if EV_USE_PORT
+ if (backend == EVBACKEND_PORT ) port_fork (EV_A);
+#endif
+#if EV_USE_KQUEUE
+ if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
+#endif
+#if EV_USE_EPOLL
+ if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
+#endif
+#if EV_USE_INOTIFY
+ infy_fork (EV_A);
+#endif
+
+ if (ev_is_active (&pipe_w))
+ {
+ /* this "locks" the handlers against writing to the pipe */
+ /* while we modify the fd vars */
+ sig_pending = 1;
+#if EV_ASYNC_ENABLE
+ async_pending = 1;
+#endif
+
+ ev_ref (EV_A);
+ ev_io_stop (EV_A_ &pipe_w);
+
+#if EV_USE_EVENTFD
+ if (evfd >= 0)
+ close (evfd);
+#endif
+
+ if (evpipe [0] >= 0)
+ {
+ EV_WIN32_CLOSE_FD (evpipe [0]);
+ EV_WIN32_CLOSE_FD (evpipe [1]);
+ }
+
+#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
+ evpipe_init (EV_A);
+ /* now iterate over everything, in case we missed something */
+ pipecb (EV_A_ &pipe_w, EV_READ);
+#endif
+ }
+
+ postfork = 0;
+}
+
+#if EV_MULTIPLICITY
+
+struct ev_loop *
+ev_loop_new (unsigned int flags)
+{
+ EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
+
+ memset (EV_A, 0, sizeof (struct ev_loop));
+ loop_init (EV_A_ flags);
+
+ if (ev_backend (EV_A))
+ return EV_A;
+
+ ev_free (EV_A);
+ return 0;
+}
+
+#endif /* multiplicity */
+
+#if EV_VERIFY
+static void noinline
+verify_watcher (EV_P_ W w)
+{
+ assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
+
+ if (w->pending)
+ assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
+}
+
+static void noinline
+verify_heap (EV_P_ ANHE *heap, int N)
+{
+ int i;
+
+ for (i = HEAP0; i < N + HEAP0; ++i)
+ {
+ assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
+ assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
+ assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
+
+ verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
+ }
+}
+
+static void noinline
+array_verify (EV_P_ W *ws, int cnt)
+{
+ while (cnt--)
+ {
+ assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
+ verify_watcher (EV_A_ ws [cnt]);
+ }
+}
+#endif
+
+#if EV_FEATURE_API
+void
+ev_verify (EV_P)
+{
+#if EV_VERIFY
+ int i;
+ WL w;
+
+ assert (activecnt >= -1);
+
+ assert (fdchangemax >= fdchangecnt);
+ for (i = 0; i < fdchangecnt; ++i)
+ assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
+
+ assert (anfdmax >= 0);
+ for (i = 0; i < anfdmax; ++i)
+ for (w = anfds [i].head; w; w = w->next)
+ {
+ verify_watcher (EV_A_ (W)w);
+ assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
+ assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
+ }
+
+ assert (timermax >= timercnt);
+ verify_heap (EV_A_ timers, timercnt);
+
+#if EV_PERIODIC_ENABLE
+ assert (periodicmax >= periodiccnt);
+ verify_heap (EV_A_ periodics, periodiccnt);
+#endif
+
+ for (i = NUMPRI; i--; )
+ {
+ assert (pendingmax [i] >= pendingcnt [i]);
+#if EV_IDLE_ENABLE
+ assert (idleall >= 0);
+ assert (idlemax [i] >= idlecnt [i]);
+ array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
+#endif
+ }
+
+#if EV_FORK_ENABLE
+ assert (forkmax >= forkcnt);
+ array_verify (EV_A_ (W *)forks, forkcnt);
+#endif
+
+#if EV_CLEANUP_ENABLE
+ assert (cleanupmax >= cleanupcnt);
+ array_verify (EV_A_ (W *)cleanups, cleanupcnt);
+#endif
+
+#if EV_ASYNC_ENABLE
+ assert (asyncmax >= asynccnt);
+ array_verify (EV_A_ (W *)asyncs, asynccnt);
+#endif
+
+#if EV_PREPARE_ENABLE
+ assert (preparemax >= preparecnt);
+ array_verify (EV_A_ (W *)prepares, preparecnt);
+#endif
+
+#if EV_CHECK_ENABLE
+ assert (checkmax >= checkcnt);
+ array_verify (EV_A_ (W *)checks, checkcnt);
+#endif
+
+# if 0
+#if EV_CHILD_ENABLE
+ for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
+ for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
+#endif
+# endif
+#endif
+}
+#endif
+
+#if EV_MULTIPLICITY
+struct ev_loop *
+#else
+int
+#endif
+ev_default_loop (unsigned int flags)
+{
+ if (!ev_default_loop_ptr)
+ {
+#if EV_MULTIPLICITY
+ EV_P = ev_default_loop_ptr = &default_loop_struct;
+#else
+ ev_default_loop_ptr = 1;
+#endif
+
+ loop_init (EV_A_ flags);
+
+ if (ev_backend (EV_A))
+ {
+#if EV_CHILD_ENABLE
+ ev_signal_init (&childev, childcb, SIGCHLD);
+ ev_set_priority (&childev, EV_MAXPRI);
+ ev_signal_start (EV_A_ &childev);
+ ev_unref (EV_A); /* child watcher should not keep loop alive */
+#endif
+ }
+ else
+ ev_default_loop_ptr = 0;
+ }
+
+ return ev_default_loop_ptr;
+}
+
+void
+ev_loop_fork (EV_P)
+{
+ postfork = 1; /* must be in line with ev_default_fork */
+}
+
+/*****************************************************************************/
+
+void
+ev_invoke (EV_P_ void *w, int revents)
+{
+ EV_CB_INVOKE ((W)w, revents);
+}
+
+unsigned int
+ev_pending_count (EV_P)
+{
+ int pri;
+ unsigned int count = 0;
+
+ for (pri = NUMPRI; pri--; )
+ count += pendingcnt [pri];
+
+ return count;
+}
+
+void noinline
+ev_invoke_pending (EV_P)
+{
+ int pri;
+
+ for (pri = NUMPRI; pri--; )
+ while (pendingcnt [pri])
+ {
+ ANPENDING *p = pendings [pri] + --pendingcnt [pri];
+
+ p->w->pending = 0;
+ EV_CB_INVOKE (p->w, p->events);
+ EV_FREQUENT_CHECK;
+ }
+}
+
+#if EV_IDLE_ENABLE
+/* make idle watchers pending. this handles the "call-idle */
+/* only when higher priorities are idle" logic */
+inline_size void
+idle_reify (EV_P)
+{
+ if (expect_false (idleall))
+ {
+ int pri;
+
+ for (pri = NUMPRI; pri--; )
+ {
+ if (pendingcnt [pri])
+ break;
+
+ if (idlecnt [pri])
+ {
+ queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
+ break;
+ }
+ }
+ }
+}
+#endif
+
+/* make timers pending */
+inline_size void
+timers_reify (EV_P)
+{
+ EV_FREQUENT_CHECK;
+
+ if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
+ {
+ do
+ {
+ ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
+
+ /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
+
+ /* first reschedule or stop timer */
+ if (w->repeat)
+ {
+ ev_at (w) += w->repeat;
+ if (ev_at (w) < mn_now)
+ ev_at (w) = mn_now;
+
+ assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
+
+ ANHE_at_cache (timers [HEAP0]);
+ downheap (timers, timercnt, HEAP0);
+ }
+ else
+ ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
+
+ EV_FREQUENT_CHECK;
+ feed_reverse (EV_A_ (W)w);
+ }
+ while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
+
+ feed_reverse_done (EV_A_ EV_TIMER);
+ }
+}
+
+#if EV_PERIODIC_ENABLE
+
+inline_speed void
+periodic_recalc (EV_P_ ev_periodic *w)
+{
+ /* TODO: use slow but potentially more correct incremental algo, */
+ /* also do not rely on ceil */
+ ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
+}
+
+/* make periodics pending */
+inline_size void
+periodics_reify (EV_P)
+{
+ EV_FREQUENT_CHECK;
+
+ while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
+ {
+ int feed_count = 0;
+
+ do
+ {
+ ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
+
+ /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
+
+ /* first reschedule or stop timer */
+ if (w->reschedule_cb)
+ {
+ ev_at (w) = w->reschedule_cb (w, ev_rt_now);
+
+ assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
+
+ ANHE_at_cache (periodics [HEAP0]);
+ downheap (periodics, periodiccnt, HEAP0);
+ }
+ else if (w->interval)
+ {
+ periodic_recalc (EV_A_ w);
+
+ /* if next trigger time is not sufficiently in the future, put it there */
+ /* this might happen because of floating point inexactness */
+ if (ev_at (w) - ev_rt_now < TIME_EPSILON)
+ {
+ ev_at (w) += w->interval;
+
+ /* if interval is unreasonably low we might still have a time in the past */
+ /* so correct this. this will make the periodic very inexact, but the user */
+ /* has effectively asked to get triggered more often than possible */
+ if (ev_at (w) < ev_rt_now)
+ ev_at (w) = ev_rt_now;
+ }
+
+ ANHE_at_cache (periodics [HEAP0]);
+ downheap (periodics, periodiccnt, HEAP0);
+ }
+ else
+ ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
+
+ EV_FREQUENT_CHECK;
+ feed_reverse (EV_A_ (W)w);
+ }
+ while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
+
+ feed_reverse_done (EV_A_ EV_PERIODIC);
+ }
+}
+
+/* simply recalculate all periodics */
+/* TODO: maybe ensure that at least one event happens when jumping forward? */
+static void noinline
+periodics_reschedule (EV_P)
+{
+ int i;
+
+ /* adjust periodics after time jump */
+ for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
+ {
+ ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
+
+ if (w->reschedule_cb)
+ ev_at (w) = w->reschedule_cb (w, ev_rt_now);
+ else if (w->interval)
+ periodic_recalc (EV_A_ w);
+
+ ANHE_at_cache (periodics [i]);
+ }
+
+ reheap (periodics, periodiccnt);
+}
+#endif
+
+/* adjust all timers by a given offset */
+static void noinline
+timers_reschedule (EV_P_ ev_tstamp adjust)
+{
+ int i;
+
+ for (i = 0; i < timercnt; ++i)
+ {
+ ANHE *he = timers + i + HEAP0;
+ ANHE_w (*he)->at += adjust;
+ ANHE_at_cache (*he);
+ }
+}
+
+/* fetch new monotonic and realtime times from the kernel */
+/* also detect if there was a timejump, and act accordingly */
+inline_speed void
+time_update (EV_P_ ev_tstamp max_block)
+{
+#if EV_USE_MONOTONIC
+ if (expect_true (have_monotonic))
+ {
+ int i;
+ ev_tstamp odiff = rtmn_diff;
+
+ mn_now = get_clock ();
+
+ /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
+ /* interpolate in the meantime */
+ if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
+ {
+ ev_rt_now = rtmn_diff + mn_now;
+ return;
+ }
+
+ now_floor = mn_now;
+ ev_rt_now = ev_time ();
+
+ /* loop a few times, before making important decisions.
+ * on the choice of "4": one iteration isn't enough,
+ * in case we get preempted during the calls to
+ * ev_time and get_clock. a second call is almost guaranteed
+ * to succeed in that case, though. and looping a few more times
+ * doesn't hurt either as we only do this on time-jumps or
+ * in the unlikely event of having been preempted here.
+ */
+ for (i = 4; --i; )
+ {
+ rtmn_diff = ev_rt_now - mn_now;
+
+ if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
+ return; /* all is well */
+
+ ev_rt_now = ev_time ();
+ mn_now = get_clock ();
+ now_floor = mn_now;
+ }
+
+ /* no timer adjustment, as the monotonic clock doesn't jump */
+ /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
+# if EV_PERIODIC_ENABLE
+ periodics_reschedule (EV_A);
+# endif
+ }
+ else
+#endif
+ {
+ ev_rt_now = ev_time ();
+
+ if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
+ {
+ /* adjust timers. this is easy, as the offset is the same for all of them */
+ timers_reschedule (EV_A_ ev_rt_now - mn_now);
+#if EV_PERIODIC_ENABLE
+ periodics_reschedule (EV_A);
+#endif
+ }
+
+ mn_now = ev_rt_now;
+ }
+}
+
+void
+ev_run (EV_P_ int flags)
+{
+#if EV_FEATURE_API
+ ++loop_depth;
+#endif
+
+ assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
+
+ loop_done = EVBREAK_CANCEL;
+
+ EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
+
+ do
+ {
+#if EV_VERIFY >= 2
+ ev_verify (EV_A);
+#endif
+
+#ifndef _WIN32
+ if (expect_false (curpid)) /* penalise the forking check even more */
+ if (expect_false (getpid () != curpid))
+ {
+ curpid = getpid ();
+ postfork = 1;
+ }
+#endif
+
+#if EV_FORK_ENABLE
+ /* we might have forked, so queue fork handlers */
+ if (expect_false (postfork))
+ if (forkcnt)
+ {
+ queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
+ EV_INVOKE_PENDING;
+ }
+#endif
+
+#if EV_PREPARE_ENABLE
+ /* queue prepare watchers (and execute them) */
+ if (expect_false (preparecnt))
+ {
+ queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
+ EV_INVOKE_PENDING;
+ }
+#endif
+
+ if (expect_false (loop_done))
+ break;
+
+ /* we might have forked, so reify kernel state if necessary */
+ if (expect_false (postfork))
+ loop_fork (EV_A);
+
+ /* update fd-related kernel structures */
+ fd_reify (EV_A);
+
+ /* calculate blocking time */
+ {
+ ev_tstamp waittime = 0.;
+ ev_tstamp sleeptime = 0.;
+
+ /* remember old timestamp for io_blocktime calculation */
+ ev_tstamp prev_mn_now = mn_now;
+
+ /* update time to cancel out callback processing overhead */
+ time_update (EV_A_ 1e100);
+
+ if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
+ {
+ waittime = MAX_BLOCKTIME;
+
+ if (timercnt)
+ {
+ ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
+ if (waittime > to) waittime = to;
+ }
+
+#if EV_PERIODIC_ENABLE
+ if (periodiccnt)
+ {
+ ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
+ if (waittime > to) waittime = to;
+ }
+#endif
+
+ /* don't let timeouts decrease the waittime below timeout_blocktime */
+ if (expect_false (waittime < timeout_blocktime))
+ waittime = timeout_blocktime;
+
+ /* extra check because io_blocktime is commonly 0 */
+ if (expect_false (io_blocktime))
+ {
+ sleeptime = io_blocktime - (mn_now - prev_mn_now);
+
+ if (sleeptime > waittime - backend_fudge)
+ sleeptime = waittime - backend_fudge;
+
+ if (expect_true (sleeptime > 0.))
+ {
+ ev_sleep (sleeptime);
+ waittime -= sleeptime;
+ }
+ }
+ }
+
+#if EV_FEATURE_API
+ ++loop_count;
+#endif
+ assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
+ backend_poll (EV_A_ waittime);
+ assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
+
+ /* update ev_rt_now, do magic */
+ time_update (EV_A_ waittime + sleeptime);
+ }
+
+ /* queue pending timers and reschedule them */
+ timers_reify (EV_A); /* relative timers called last */
+#if EV_PERIODIC_ENABLE
+ periodics_reify (EV_A); /* absolute timers called first */
+#endif
+
+#if EV_IDLE_ENABLE
+ /* queue idle watchers unless other events are pending */
+ idle_reify (EV_A);
+#endif
+
+#if EV_CHECK_ENABLE
+ /* queue check watchers, to be executed first */
+ if (expect_false (checkcnt))
+ queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
+#endif
+
+ EV_INVOKE_PENDING;
+ }
+ while (expect_true (
+ activecnt
+ && !loop_done
+ && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
+ ));
+
+ if (loop_done == EVBREAK_ONE)
+ loop_done = EVBREAK_CANCEL;
+
+#if EV_FEATURE_API
+ --loop_depth;
+#endif
+}
+
+void
+ev_break (EV_P_ int how)
+{
+ loop_done = how;
+}
+
+void
+ev_ref (EV_P)
+{
+ ++activecnt;
+}
+
+void
+ev_unref (EV_P)
+{
+ --activecnt;
+}
+
+void
+ev_now_update (EV_P)
+{
+ time_update (EV_A_ 1e100);
+}
+
+void
+ev_suspend (EV_P)
+{
+ ev_now_update (EV_A);
+}
+
+void
+ev_resume (EV_P)
+{
+ ev_tstamp mn_prev = mn_now;
+
+ ev_now_update (EV_A);
+ timers_reschedule (EV_A_ mn_now - mn_prev);
+#if EV_PERIODIC_ENABLE
+ /* TODO: really do this? */
+ periodics_reschedule (EV_A);
+#endif
+}
+
+/*****************************************************************************/
+/* singly-linked list management, used when the expected list length is short */
+
+inline_size void
+wlist_add (WL *head, WL elem)
+{
+ elem->next = *head;
+ *head = elem;
+}
+
+inline_size void
+wlist_del (WL *head, WL elem)
+{
+ while (*head)
+ {
+ if (expect_true (*head == elem))
+ {
+ *head = elem->next;
+ break;
+ }
+
+ head = &(*head)->next;
+ }
+}
+
+/* internal, faster, version of ev_clear_pending */
+inline_speed void
+clear_pending (EV_P_ W w)
+{
+ if (w->pending)
+ {
+ pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
+ w->pending = 0;
+ }
+}
+
+int
+ev_clear_pending (EV_P_ void *w)
+{
+ W w_ = (W)w;
+ int pending = w_->pending;
+
+ if (expect_true (pending))
+ {
+ ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
+ p->w = (W)&pending_w;
+ w_->pending = 0;
+ return p->events;
+ }
+ else
+ return 0;
+}
+
+inline_size void
+pri_adjust (EV_P_ W w)
+{
+ int pri = ev_priority (w);
+ pri = pri < EV_MINPRI ? EV_MINPRI : pri;
+ pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
+ ev_set_priority (w, pri);
+}
+
+inline_speed void
+ev_start (EV_P_ W w, int active)
+{
+ pri_adjust (EV_A_ w);
+ w->active = active;
+ ev_ref (EV_A);
+}
+
+inline_size void
+ev_stop (EV_P_ W w)
+{
+ ev_unref (EV_A);
+ w->active = 0;
+}
+
+/*****************************************************************************/
+
+void noinline
+ev_io_start (EV_P_ ev_io *w)
+{
+ int fd = w->fd;
+
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ assert (("libev: ev_io_start called with negative fd", fd >= 0));
+ assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
+
+ EV_FREQUENT_CHECK;
+
+ ev_start (EV_A_ (W)w, 1);
+ array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
+ wlist_add (&anfds[fd].head, (WL)w);
+
+ fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
+ w->events &= ~EV__IOFDSET;
+
+ EV_FREQUENT_CHECK;
+}
+
+void noinline
+ev_io_stop (EV_P_ ev_io *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
+
+ EV_FREQUENT_CHECK;
+
+ wlist_del (&anfds[w->fd].head, (WL)w);
+ ev_stop (EV_A_ (W)w);
+
+ fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
+
+ EV_FREQUENT_CHECK;
+}
+
+void noinline
+ev_timer_start (EV_P_ ev_timer *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ ev_at (w) += mn_now;
+
+ assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
+
+ EV_FREQUENT_CHECK;
+
+ ++timercnt;
+ ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
+ array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
+ ANHE_w (timers [ev_active (w)]) = (WT)w;
+ ANHE_at_cache (timers [ev_active (w)]);
+ upheap (timers, ev_active (w));
+
+ EV_FREQUENT_CHECK;
+
+ /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
+}
+
+void noinline
+ev_timer_stop (EV_P_ ev_timer *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
+
+ --timercnt;
+
+ if (expect_true (active < timercnt + HEAP0))
+ {
+ timers [active] = timers [timercnt + HEAP0];
+ adjustheap (timers, timercnt, active);
+ }
+ }
+
+ ev_at (w) -= mn_now;
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+
+void noinline
+ev_timer_again (EV_P_ ev_timer *w)
+{
+ EV_FREQUENT_CHECK;
+
+ if (ev_is_active (w))
+ {
+ if (w->repeat)
+ {
+ ev_at (w) = mn_now + w->repeat;
+ ANHE_at_cache (timers [ev_active (w)]);
+ adjustheap (timers, timercnt, ev_active (w));
+ }
+ else
+ ev_timer_stop (EV_A_ w);
+ }
+ else if (w->repeat)
+ {
+ ev_at (w) = w->repeat;
+ ev_timer_start (EV_A_ w);
+ }
+
+ EV_FREQUENT_CHECK;
+}
+
+ev_tstamp
+ev_timer_remaining (EV_P_ ev_timer *w)
+{
+ return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
+}
+
+#if EV_PERIODIC_ENABLE
+void noinline
+ev_periodic_start (EV_P_ ev_periodic *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ if (w->reschedule_cb)
+ ev_at (w) = w->reschedule_cb (w, ev_rt_now);
+ else if (w->interval)
+ {
+ assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
+ periodic_recalc (EV_A_ w);
+ }
+ else
+ ev_at (w) = w->offset;
+
+ EV_FREQUENT_CHECK;
+
+ ++periodiccnt;
+ ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
+ array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
+ ANHE_w (periodics [ev_active (w)]) = (WT)w;
+ ANHE_at_cache (periodics [ev_active (w)]);
+ upheap (periodics, ev_active (w));
+
+ EV_FREQUENT_CHECK;
+
+ /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
+}
+
+void noinline
+ev_periodic_stop (EV_P_ ev_periodic *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
+
+ --periodiccnt;
+
+ if (expect_true (active < periodiccnt + HEAP0))
+ {
+ periodics [active] = periodics [periodiccnt + HEAP0];
+ adjustheap (periodics, periodiccnt, active);
+ }
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+
+void noinline
+ev_periodic_again (EV_P_ ev_periodic *w)
+{
+ /* TODO: use adjustheap and recalculation */
+ ev_periodic_stop (EV_A_ w);
+ ev_periodic_start (EV_A_ w);
+}
+#endif
+
+#ifndef SA_RESTART
+# define SA_RESTART 0
+#endif
+
+#if EV_SIGNAL_ENABLE
+
+void noinline
+ev_signal_start (EV_P_ ev_signal *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
+
+#if EV_MULTIPLICITY
+ assert (("libev: a signal must not be attached to two different loops",
+ !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
+
+ signals [w->signum - 1].loop = EV_A;
+#endif
+
+ EV_FREQUENT_CHECK;
+
+#if EV_USE_SIGNALFD
+ if (sigfd == -2)
+ {
+ sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
+ if (sigfd < 0 && errno == EINVAL)
+ sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
+
+ if (sigfd >= 0)
+ {
+ fd_intern (sigfd); /* doing it twice will not hurt */
+
+ sigemptyset (&sigfd_set);
+
+ ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
+ ev_set_priority (&sigfd_w, EV_MAXPRI);
+ ev_io_start (EV_A_ &sigfd_w);
+ ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
+ }
+ }
+
+ if (sigfd >= 0)
+ {
+ /* TODO: check .head */
+ sigaddset (&sigfd_set, w->signum);
+ sigprocmask (SIG_BLOCK, &sigfd_set, 0);
+
+ signalfd (sigfd, &sigfd_set, 0);
+ }
+#endif
+
+ ev_start (EV_A_ (W)w, 1);
+ wlist_add (&signals [w->signum - 1].head, (WL)w);
+
+ if (!((WL)w)->next)
+# if EV_USE_SIGNALFD
+ if (sigfd < 0) /*TODO*/
+# endif
+ {
+# ifdef _WIN32
+ evpipe_init (EV_A);
+
+ signal (w->signum, ev_sighandler);
+# else
+ struct sigaction sa;
+
+ evpipe_init (EV_A);
+
+ sa.sa_handler = ev_sighandler;
+ sigfillset (&sa.sa_mask);
+ sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
+ sigaction (w->signum, &sa, 0);
+
+ if (origflags & EVFLAG_NOSIGMASK)
+ {
+ sigemptyset (&sa.sa_mask);
+ sigaddset (&sa.sa_mask, w->signum);
+ sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
+ }
+#endif
+ }
+
+ EV_FREQUENT_CHECK;
+}
+
+void noinline
+ev_signal_stop (EV_P_ ev_signal *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ wlist_del (&signals [w->signum - 1].head, (WL)w);
+ ev_stop (EV_A_ (W)w);
+
+ if (!signals [w->signum - 1].head)
+ {
+#if EV_MULTIPLICITY
+ signals [w->signum - 1].loop = 0; /* unattach from signal */
+#endif
+#if EV_USE_SIGNALFD
+ if (sigfd >= 0)
+ {
+ sigset_t ss;
+
+ sigemptyset (&ss);
+ sigaddset (&ss, w->signum);
+ sigdelset (&sigfd_set, w->signum);
+
+ signalfd (sigfd, &sigfd_set, 0);
+ sigprocmask (SIG_UNBLOCK, &ss, 0);
+ }
+ else
+#endif
+ signal (w->signum, SIG_DFL);
+ }
+
+ EV_FREQUENT_CHECK;
+}
+
+#endif
+
+#if EV_CHILD_ENABLE
+
+void
+ev_child_start (EV_P_ ev_child *w)
+{
+#if EV_MULTIPLICITY
+ assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
+#endif
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ ev_start (EV_A_ (W)w, 1);
+ wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_child_stop (EV_P_ ev_child *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+
+#endif
+
+#if EV_STAT_ENABLE
+
+# ifdef _WIN32
+# undef lstat
+# define lstat(a,b) _stati64 (a,b)
+# endif
+
+#define DEF_STAT_INTERVAL 5.0074891
+#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
+#define MIN_STAT_INTERVAL 0.1074891
+
+static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
+
+#if EV_USE_INOTIFY
+
+/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
+# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
+
+static void noinline
+infy_add (EV_P_ ev_stat *w)
+{
+ w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
+
+ if (w->wd >= 0)
+ {
+ struct statfs sfs;
+
+ /* now local changes will be tracked by inotify, but remote changes won't */
+ /* unless the filesystem is known to be local, we therefore still poll */
+ /* also do poll on <2.6.25, but with normal frequency */
+
+ if (!fs_2625)
+ w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
+ else if (!statfs (w->path, &sfs)
+ && (sfs.f_type == 0x1373 /* devfs */
+ || sfs.f_type == 0xEF53 /* ext2/3 */
+ || sfs.f_type == 0x3153464a /* jfs */
+ || sfs.f_type == 0x52654973 /* reiser3 */
+ || sfs.f_type == 0x01021994 /* tempfs */
+ || sfs.f_type == 0x58465342 /* xfs */))
+ w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
+ else
+ w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
+ }
+ else
+ {
+ /* can't use inotify, continue to stat */
+ w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
+
+ /* if path is not there, monitor some parent directory for speedup hints */
+ /* note that exceeding the hardcoded path limit is not a correctness issue, */
+ /* but an efficiency issue only */
+ if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
+ {
+ char path [4096];
+ strcpy (path, w->path);
+
+ do
+ {
+ int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
+ | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
+
+ char *pend = strrchr (path, '/');
+
+ if (!pend || pend == path)
+ break;
+
+ *pend = 0;
+ w->wd = inotify_add_watch (fs_fd, path, mask);
+ }
+ while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
+ }
+ }
+
+ if (w->wd >= 0)
+ wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
+
+ /* now re-arm timer, if required */
+ if (ev_is_active (&w->timer)) ev_ref (EV_A);
+ ev_timer_again (EV_A_ &w->timer);
+ if (ev_is_active (&w->timer)) ev_unref (EV_A);
+}
+
+static void noinline
+infy_del (EV_P_ ev_stat *w)
+{
+ int slot;
+ int wd = w->wd;
+
+ if (wd < 0)
+ return;
+
+ w->wd = -2;
+ slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
+ wlist_del (&fs_hash [slot].head, (WL)w);
+
+ /* remove this watcher, if others are watching it, they will rearm */
+ inotify_rm_watch (fs_fd, wd);
+}
+
+static void noinline
+infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
+{
+ if (slot < 0)
+ /* overflow, need to check for all hash slots */
+ for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
+ infy_wd (EV_A_ slot, wd, ev);
+ else
+ {
+ WL w_;
+
+ for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
+ {
+ ev_stat *w = (ev_stat *)w_;
+ w_ = w_->next; /* lets us remove this watcher and all before it */
+
+ if (w->wd == wd || wd == -1)
+ {
+ if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
+ {
+ wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
+ w->wd = -1;
+ infy_add (EV_A_ w); /* re-add, no matter what */
+ }
+
+ stat_timer_cb (EV_A_ &w->timer, 0);
+ }
+ }
+ }
+}
+
+static void
+infy_cb (EV_P_ ev_io *w, int revents)
+{
+ char buf [EV_INOTIFY_BUFSIZE];
+ int ofs;
+ int len = read (fs_fd, buf, sizeof (buf));
+
+ for (ofs = 0; ofs < len; )
+ {
+ struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
+ infy_wd (EV_A_ ev->wd, ev->wd, ev);
+ ofs += sizeof (struct inotify_event) + ev->len;
+ }
+}
+
+inline_size void
+ev_check_2625 (EV_P)
+{
+ /* kernels < 2.6.25 are borked
+ * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
+ */
+ if (ev_linux_version () < 0x020619)
+ return;
+
+ fs_2625 = 1;
+}
+
+inline_size int
+infy_newfd (void)
+{
+#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
+ int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
+ if (fd >= 0)
+ return fd;
+#endif
+ return inotify_init ();
+}
+
+inline_size void
+infy_init (EV_P)
+{
+ if (fs_fd != -2)
+ return;
+
+ fs_fd = -1;
+
+ ev_check_2625 (EV_A);
+
+ fs_fd = infy_newfd ();
+
+ if (fs_fd >= 0)
+ {
+ fd_intern (fs_fd);
+ ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
+ ev_set_priority (&fs_w, EV_MAXPRI);
+ ev_io_start (EV_A_ &fs_w);
+ ev_unref (EV_A);
+ }
+}
+
+inline_size void
+infy_fork (EV_P)
+{
+ int slot;
+
+ if (fs_fd < 0)
+ return;
+
+ ev_ref (EV_A);
+ ev_io_stop (EV_A_ &fs_w);
+ close (fs_fd);
+ fs_fd = infy_newfd ();
+
+ if (fs_fd >= 0)
+ {
+ fd_intern (fs_fd);
+ ev_io_set (&fs_w, fs_fd, EV_READ);
+ ev_io_start (EV_A_ &fs_w);
+ ev_unref (EV_A);
+ }
+
+ for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
+ {
+ WL w_ = fs_hash [slot].head;
+ fs_hash [slot].head = 0;
+
+ while (w_)
+ {
+ ev_stat *w = (ev_stat *)w_;
+ w_ = w_->next; /* lets us add this watcher */
+
+ w->wd = -1;
+
+ if (fs_fd >= 0)
+ infy_add (EV_A_ w); /* re-add, no matter what */
+ else
+ {
+ w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
+ if (ev_is_active (&w->timer)) ev_ref (EV_A);
+ ev_timer_again (EV_A_ &w->timer);
+ if (ev_is_active (&w->timer)) ev_unref (EV_A);
+ }
+ }
+ }
+}
+
+#endif
+
+#ifdef _WIN32
+# define EV_LSTAT(p,b) _stati64 (p, b)
+#else
+# define EV_LSTAT(p,b) lstat (p, b)
+#endif
+
+void
+ev_stat_stat (EV_P_ ev_stat *w)
+{
+ if (lstat (w->path, &w->attr) < 0)
+ w->attr.st_nlink = 0;
+ else if (!w->attr.st_nlink)
+ w->attr.st_nlink = 1;
+}
+
+static void noinline
+stat_timer_cb (EV_P_ ev_timer *w_, int revents)
+{
+ ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
+
+ ev_statdata prev = w->attr;
+ ev_stat_stat (EV_A_ w);
+
+ /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
+ if (
+ prev.st_dev != w->attr.st_dev
+ || prev.st_ino != w->attr.st_ino
+ || prev.st_mode != w->attr.st_mode
+ || prev.st_nlink != w->attr.st_nlink
+ || prev.st_uid != w->attr.st_uid
+ || prev.st_gid != w->attr.st_gid
+ || prev.st_rdev != w->attr.st_rdev
+ || prev.st_size != w->attr.st_size
+ || prev.st_atime != w->attr.st_atime
+ || prev.st_mtime != w->attr.st_mtime
+ || prev.st_ctime != w->attr.st_ctime
+ ) {
+ /* we only update w->prev on actual differences */
+ /* in case we test more often than invoke the callback, */
+ /* to ensure that prev is always different to attr */
+ w->prev = prev;
+
+ #if EV_USE_INOTIFY
+ if (fs_fd >= 0)
+ {
+ infy_del (EV_A_ w);
+ infy_add (EV_A_ w);
+ ev_stat_stat (EV_A_ w); /* avoid race... */
+ }
+ #endif
+
+ ev_feed_event (EV_A_ w, EV_STAT);
+ }
+}
+
+void
+ev_stat_start (EV_P_ ev_stat *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ ev_stat_stat (EV_A_ w);
+
+ if (w->interval < MIN_STAT_INTERVAL && w->interval)
+ w->interval = MIN_STAT_INTERVAL;
+
+ ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
+ ev_set_priority (&w->timer, ev_priority (w));
+
+#if EV_USE_INOTIFY
+ infy_init (EV_A);
+
+ if (fs_fd >= 0)
+ infy_add (EV_A_ w);
+ else
+#endif
+ {
+ ev_timer_again (EV_A_ &w->timer);
+ ev_unref (EV_A);
+ }
+
+ ev_start (EV_A_ (W)w, 1);
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_stat_stop (EV_P_ ev_stat *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+#if EV_USE_INOTIFY
+ infy_del (EV_A_ w);
+#endif
+
+ if (ev_is_active (&w->timer))
+ {
+ ev_ref (EV_A);
+ ev_timer_stop (EV_A_ &w->timer);
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_IDLE_ENABLE
+void
+ev_idle_start (EV_P_ ev_idle *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ pri_adjust (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ++idlecnt [ABSPRI (w)];
+
+ ++idleall;
+ ev_start (EV_A_ (W)w, active);
+
+ array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
+ idles [ABSPRI (w)][active - 1] = w;
+ }
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_idle_stop (EV_P_ ev_idle *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
+ ev_active (idles [ABSPRI (w)][active - 1]) = active;
+
+ ev_stop (EV_A_ (W)w);
+ --idleall;
+ }
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_PREPARE_ENABLE
+void
+ev_prepare_start (EV_P_ ev_prepare *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ ev_start (EV_A_ (W)w, ++preparecnt);
+ array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
+ prepares [preparecnt - 1] = w;
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_prepare_stop (EV_P_ ev_prepare *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ prepares [active - 1] = prepares [--preparecnt];
+ ev_active (prepares [active - 1]) = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_CHECK_ENABLE
+void
+ev_check_start (EV_P_ ev_check *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ ev_start (EV_A_ (W)w, ++checkcnt);
+ array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
+ checks [checkcnt - 1] = w;
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_check_stop (EV_P_ ev_check *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ checks [active - 1] = checks [--checkcnt];
+ ev_active (checks [active - 1]) = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_EMBED_ENABLE
+void noinline
+ev_embed_sweep (EV_P_ ev_embed *w)
+{
+ ev_run (w->other, EVRUN_NOWAIT);
+}
+
+static void
+embed_io_cb (EV_P_ ev_io *io, int revents)
+{
+ ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
+
+ if (ev_cb (w))
+ ev_feed_event (EV_A_ (W)w, EV_EMBED);
+ else
+ ev_run (w->other, EVRUN_NOWAIT);
+}
+
+static void
+embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
+{
+ ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
+
+ {
+ EV_P = w->other;
+
+ while (fdchangecnt)
+ {
+ fd_reify (EV_A);
+ ev_run (EV_A_ EVRUN_NOWAIT);
+ }
+ }
+}
+
+static void
+embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
+{
+ ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
+
+ ev_embed_stop (EV_A_ w);
+
+ {
+ EV_P = w->other;
+
+ ev_loop_fork (EV_A);
+ ev_run (EV_A_ EVRUN_NOWAIT);
+ }
+
+ ev_embed_start (EV_A_ w);
+}
+
+#if 0
+static void
+embed_idle_cb (EV_P_ ev_idle *idle, int revents)
+{
+ ev_idle_stop (EV_A_ idle);
+}
+#endif
+
+void
+ev_embed_start (EV_P_ ev_embed *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ {
+ EV_P = w->other;
+ assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
+ ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
+ }
+
+ EV_FREQUENT_CHECK;
+
+ ev_set_priority (&w->io, ev_priority (w));
+ ev_io_start (EV_A_ &w->io);
+
+ ev_prepare_init (&w->prepare, embed_prepare_cb);
+ ev_set_priority (&w->prepare, EV_MINPRI);
+ ev_prepare_start (EV_A_ &w->prepare);
+
+ ev_fork_init (&w->fork, embed_fork_cb);
+ ev_fork_start (EV_A_ &w->fork);
+
+ /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
+
+ ev_start (EV_A_ (W)w, 1);
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_embed_stop (EV_P_ ev_embed *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ ev_io_stop (EV_A_ &w->io);
+ ev_prepare_stop (EV_A_ &w->prepare);
+ ev_fork_stop (EV_A_ &w->fork);
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_FORK_ENABLE
+void
+ev_fork_start (EV_P_ ev_fork *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ ev_start (EV_A_ (W)w, ++forkcnt);
+ array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
+ forks [forkcnt - 1] = w;
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_fork_stop (EV_P_ ev_fork *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ forks [active - 1] = forks [--forkcnt];
+ ev_active (forks [active - 1]) = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_CLEANUP_ENABLE
+void
+ev_cleanup_start (EV_P_ ev_cleanup *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ ev_start (EV_A_ (W)w, ++cleanupcnt);
+ array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
+ cleanups [cleanupcnt - 1] = w;
+
+ /* cleanup watchers should never keep a refcount on the loop */
+ ev_unref (EV_A);
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_cleanup_stop (EV_P_ ev_cleanup *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+ ev_ref (EV_A);
+
+ {
+ int active = ev_active (w);
+
+ cleanups [active - 1] = cleanups [--cleanupcnt];
+ ev_active (cleanups [active - 1]) = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+#endif
+
+#if EV_ASYNC_ENABLE
+void
+ev_async_start (EV_P_ ev_async *w)
+{
+ if (expect_false (ev_is_active (w)))
+ return;
+
+ w->sent = 0;
+
+ evpipe_init (EV_A);
+
+ EV_FREQUENT_CHECK;
+
+ ev_start (EV_A_ (W)w, ++asynccnt);
+ array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
+ asyncs [asynccnt - 1] = w;
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_async_stop (EV_P_ ev_async *w)
+{
+ clear_pending (EV_A_ (W)w);
+ if (expect_false (!ev_is_active (w)))
+ return;
+
+ EV_FREQUENT_CHECK;
+
+ {
+ int active = ev_active (w);
+
+ asyncs [active - 1] = asyncs [--asynccnt];
+ ev_active (asyncs [active - 1]) = active;
+ }
+
+ ev_stop (EV_A_ (W)w);
+
+ EV_FREQUENT_CHECK;
+}
+
+void
+ev_async_send (EV_P_ ev_async *w)
+{
+ w->sent = 1;
+ evpipe_write (EV_A_ &async_pending);
+}
+#endif
+
+/*****************************************************************************/
+
+struct ev_once
+{
+ ev_io io;
+ ev_timer to;
+ void (*cb)(int revents, void *arg);
+ void *arg;
+};
+
+static void
+once_cb (EV_P_ struct ev_once *once, int revents)
+{
+ void (*cb)(int revents, void *arg) = once->cb;
+ void *arg = once->arg;
+
+ ev_io_stop (EV_A_ &once->io);
+ ev_timer_stop (EV_A_ &once->to);
+ ev_free (once);
+
+ cb (revents, arg);
+}
+
+static void
+once_cb_io (EV_P_ ev_io *w, int revents)
+{
+ struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
+
+ once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
+}
+
+static void
+once_cb_to (EV_P_ ev_timer *w, int revents)
+{
+ struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
+
+ once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
+}
+
+void
+ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
+{
+ struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
+
+ if (expect_false (!once))
+ {
+ cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
+ return;
+ }
+
+ once->cb = cb;
+ once->arg = arg;
+
+ ev_init (&once->io, once_cb_io);
+ if (fd >= 0)
+ {
+ ev_io_set (&once->io, fd, events);
+ ev_io_start (EV_A_ &once->io);
+ }
+
+ ev_init (&once->to, once_cb_to);
+ if (timeout >= 0.)
+ {
+ ev_timer_set (&once->to, timeout, 0.);
+ ev_timer_start (EV_A_ &once->to);
+ }
+}
+
+/*****************************************************************************/
+
+#if EV_WALK_ENABLE
+void
+ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
+{
+ int i, j;
+ ev_watcher_list *wl, *wn;
+
+ if (types & (EV_IO | EV_EMBED))
+ for (i = 0; i < anfdmax; ++i)
+ for (wl = anfds [i].head; wl; )
+ {
+ wn = wl->next;
+
+#if EV_EMBED_ENABLE
+ if (ev_cb ((ev_io *)wl) == embed_io_cb)
+ {
+ if (types & EV_EMBED)
+ cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
+ }
+ else
+#endif
+#if EV_USE_INOTIFY
+ if (ev_cb ((ev_io *)wl) == infy_cb)
+ ;
+ else
+#endif
+ if ((ev_io *)wl != &pipe_w)
+ if (types & EV_IO)
+ cb (EV_A_ EV_IO, wl);
+
+ wl = wn;
+ }
+
+ if (types & (EV_TIMER | EV_STAT))
+ for (i = timercnt + HEAP0; i-- > HEAP0; )
+#if EV_STAT_ENABLE
+ /*TODO: timer is not always active*/
+ if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
+ {
+ if (types & EV_STAT)
+ cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
+ }
+ else
+#endif
+ if (types & EV_TIMER)
+ cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
+
+#if EV_PERIODIC_ENABLE
+ if (types & EV_PERIODIC)
+ for (i = periodiccnt + HEAP0; i-- > HEAP0; )
+ cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
+#endif
+
+#if EV_IDLE_ENABLE
+ if (types & EV_IDLE)
+ for (j = NUMPRI; i--; )
+ for (i = idlecnt [j]; i--; )
+ cb (EV_A_ EV_IDLE, idles [j][i]);
+#endif
+
+#if EV_FORK_ENABLE
+ if (types & EV_FORK)
+ for (i = forkcnt; i--; )
+ if (ev_cb (forks [i]) != embed_fork_cb)
+ cb (EV_A_ EV_FORK, forks [i]);
+#endif
+
+#if EV_ASYNC_ENABLE
+ if (types & EV_ASYNC)
+ for (i = asynccnt; i--; )
+ cb (EV_A_ EV_ASYNC, asyncs [i]);
+#endif
+
+#if EV_PREPARE_ENABLE
+ if (types & EV_PREPARE)
+ for (i = preparecnt; i--; )
+# if EV_EMBED_ENABLE
+ if (ev_cb (prepares [i]) != embed_prepare_cb)
+# endif
+ cb (EV_A_ EV_PREPARE, prepares [i]);
+#endif
+
+#if EV_CHECK_ENABLE
+ if (types & EV_CHECK)
+ for (i = checkcnt; i--; )
+ cb (EV_A_ EV_CHECK, checks [i]);
+#endif
+
+#if EV_SIGNAL_ENABLE
+ if (types & EV_SIGNAL)
+ for (i = 0; i < EV_NSIG - 1; ++i)
+ for (wl = signals [i].head; wl; )
+ {
+ wn = wl->next;
+ cb (EV_A_ EV_SIGNAL, wl);
+ wl = wn;
+ }
+#endif
+
+#if EV_CHILD_ENABLE
+ if (types & EV_CHILD)
+ for (i = (EV_PID_HASHSIZE); i--; )
+ for (wl = childs [i]; wl; )
+ {
+ wn = wl->next;
+ cb (EV_A_ EV_CHILD, wl);
+ wl = wn;
+ }
+#endif
+/* EV_STAT 0x00001000 /* stat data changed */
+/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
+}
+#endif
+
+#if EV_MULTIPLICITY
+ #include "ev_wrap.h"
+#endif
+
+EV_CPP(})
+
--- /dev/null
+/*
+ * libev native API header
+ *
+ * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#ifndef EV_H_
+#define EV_H_
+
+#ifdef __cplusplus
+# define EV_CPP(x) x
+#else
+# define EV_CPP(x)
+#endif
+
+EV_CPP(extern "C" {)
+
+/*****************************************************************************/
+
+/* pre-4.0 compatibility */
+#ifndef EV_COMPAT3
+# define EV_COMPAT3 1
+#endif
+
+#ifndef EV_FEATURES
+# define EV_FEATURES 0x7f
+#endif
+
+#define EV_FEATURE_CODE ((EV_FEATURES) & 1)
+#define EV_FEATURE_DATA ((EV_FEATURES) & 2)
+#define EV_FEATURE_CONFIG ((EV_FEATURES) & 4)
+#define EV_FEATURE_API ((EV_FEATURES) & 8)
+#define EV_FEATURE_WATCHERS ((EV_FEATURES) & 16)
+#define EV_FEATURE_BACKENDS ((EV_FEATURES) & 32)
+#define EV_FEATURE_OS ((EV_FEATURES) & 64)
+
+/* these priorities are inclusive, higher priorities will be invoked earlier */
+#ifndef EV_MINPRI
+# define EV_MINPRI (EV_FEATURE_CONFIG ? -2 : 0)
+#endif
+#ifndef EV_MAXPRI
+# define EV_MAXPRI (EV_FEATURE_CONFIG ? +2 : 0)
+#endif
+
+#ifndef EV_MULTIPLICITY
+# define EV_MULTIPLICITY EV_FEATURE_CONFIG
+#endif
+
+#ifndef EV_PERIODIC_ENABLE
+# define EV_PERIODIC_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_STAT_ENABLE
+# define EV_STAT_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_PREPARE_ENABLE
+# define EV_PREPARE_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_CHECK_ENABLE
+# define EV_CHECK_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_IDLE_ENABLE
+# define EV_IDLE_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_FORK_ENABLE
+# define EV_FORK_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_CLEANUP_ENABLE
+# define EV_CLEANUP_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_SIGNAL_ENABLE
+# define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_CHILD_ENABLE
+# ifdef _WIN32
+# define EV_CHILD_ENABLE 0
+# else
+# define EV_CHILD_ENABLE EV_FEATURE_WATCHERS
+#endif
+#endif
+
+#ifndef EV_ASYNC_ENABLE
+# define EV_ASYNC_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_EMBED_ENABLE
+# define EV_EMBED_ENABLE EV_FEATURE_WATCHERS
+#endif
+
+#ifndef EV_WALK_ENABLE
+# define EV_WALK_ENABLE 0 /* not yet */
+#endif
+
+/*****************************************************************************/
+
+#if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE
+# undef EV_SIGNAL_ENABLE
+# define EV_SIGNAL_ENABLE 1
+#endif
+
+/*****************************************************************************/
+
+typedef double ev_tstamp;
+
+#ifndef EV_ATOMIC_T
+# include <signal.h>
+# define EV_ATOMIC_T sig_atomic_t volatile
+#endif
+
+#if EV_STAT_ENABLE
+# ifdef _WIN32
+# include <time.h>
+# include <sys/types.h>
+# endif
+# include <sys/stat.h>
+#endif
+
+/* support multiple event loops? */
+#if EV_MULTIPLICITY
+struct ev_loop;
+# define EV_P struct ev_loop *loop /* a loop as sole parameter in a declaration */
+# define EV_P_ EV_P, /* a loop as first of multiple parameters */
+# define EV_A loop /* a loop as sole argument to a function call */
+# define EV_A_ EV_A, /* a loop as first of multiple arguments */
+# define EV_DEFAULT_UC ev_default_loop_uc_ () /* the default loop, if initialised, as sole arg */
+# define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */
+# define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */
+# define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */
+#else
+# define EV_P void
+# define EV_P_
+# define EV_A
+# define EV_A_
+# define EV_DEFAULT
+# define EV_DEFAULT_
+# define EV_DEFAULT_UC
+# define EV_DEFAULT_UC_
+# undef EV_EMBED_ENABLE
+#endif
+
+/* EV_INLINE is used for functions in header files */
+#if __STDC_VERSION__ >= 199901L && __GNUC__ >= 3
+# define EV_INLINE static inline
+#else
+# define EV_INLINE static
+#endif
+
+/* EV_PROTOTYPES can be used to switch of prototype declarations */
+#ifndef EV_PROTOTYPES
+# define EV_PROTOTYPES 1
+#endif
+
+/*****************************************************************************/
+
+#define EV_VERSION_MAJOR 4
+#define EV_VERSION_MINOR 4
+
+/* eventmask, revents, events... */
+enum {
+ EV_UNDEF = 0xFFFFFFFF, /* guaranteed to be invalid */
+ EV_NONE = 0x00, /* no events */
+ EV_READ = 0x01, /* ev_io detected read will not block */
+ EV_WRITE = 0x02, /* ev_io detected write will not block */
+ EV__IOFDSET = 0x80, /* internal use only */
+ EV_IO = EV_READ, /* alias for type-detection */
+ EV_TIMER = 0x00000100, /* timer timed out */
+#if EV_COMPAT3
+ EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */
+#endif
+ EV_PERIODIC = 0x00000200, /* periodic timer timed out */
+ EV_SIGNAL = 0x00000400, /* signal was received */
+ EV_CHILD = 0x00000800, /* child/pid had status change */
+ EV_STAT = 0x00001000, /* stat data changed */
+ EV_IDLE = 0x00002000, /* event loop is idling */
+ EV_PREPARE = 0x00004000, /* event loop about to poll */
+ EV_CHECK = 0x00008000, /* event loop finished poll */
+ EV_EMBED = 0x00010000, /* embedded event loop needs sweep */
+ EV_FORK = 0x00020000, /* event loop resumed in child */
+ EV_CLEANUP = 0x00040000, /* event loop resumed in child */
+ EV_ASYNC = 0x00080000, /* async intra-loop signal */
+ EV_CUSTOM = 0x01000000, /* for use by user code */
+ EV_ERROR = 0x80000000 /* sent when an error occurs */
+};
+
+/* can be used to add custom fields to all watchers, while losing binary compatibility */
+#ifndef EV_COMMON
+# define EV_COMMON void *data;
+#endif
+
+#ifndef EV_CB_DECLARE
+# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
+#endif
+#ifndef EV_CB_INVOKE
+# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
+#endif
+
+/* not official, do not use */
+#define EV_CB(type,name) void name (EV_P_ struct ev_ ## type *w, int revents)
+
+/*
+ * struct member types:
+ * private: you may look at them, but not change them,
+ * and they might not mean anything to you.
+ * ro: can be read anytime, but only changed when the watcher isn't active.
+ * rw: can be read and modified anytime, even when the watcher is active.
+ *
+ * some internal details that might be helpful for debugging:
+ *
+ * active is either 0, which means the watcher is not active,
+ * or the array index of the watcher (periodics, timers)
+ * or the array index + 1 (most other watchers)
+ * or simply 1 for watchers that aren't in some array.
+ * pending is either 0, in which case the watcher isn't,
+ * or the array index + 1 in the pendings array.
+ */
+
+#if EV_MINPRI == EV_MAXPRI
+# define EV_DECL_PRIORITY
+#elif !defined (EV_DECL_PRIORITY)
+# define EV_DECL_PRIORITY int priority;
+#endif
+
+/* shared by all watchers */
+#define EV_WATCHER(type) \
+ int active; /* private */ \
+ int pending; /* private */ \
+ EV_DECL_PRIORITY /* private */ \
+ EV_COMMON /* rw */ \
+ EV_CB_DECLARE (type) /* private */
+
+#define EV_WATCHER_LIST(type) \
+ EV_WATCHER (type) \
+ struct ev_watcher_list *next; /* private */
+
+#define EV_WATCHER_TIME(type) \
+ EV_WATCHER (type) \
+ ev_tstamp at; /* private */
+
+/* base class, nothing to see here unless you subclass */
+typedef struct ev_watcher
+{
+ EV_WATCHER (ev_watcher)
+} ev_watcher;
+
+/* base class, nothing to see here unless you subclass */
+typedef struct ev_watcher_list
+{
+ EV_WATCHER_LIST (ev_watcher_list)
+} ev_watcher_list;
+
+/* base class, nothing to see here unless you subclass */
+typedef struct ev_watcher_time
+{
+ EV_WATCHER_TIME (ev_watcher_time)
+} ev_watcher_time;
+
+/* invoked when fd is either EV_READable or EV_WRITEable */
+/* revent EV_READ, EV_WRITE */
+typedef struct ev_io
+{
+ EV_WATCHER_LIST (ev_io)
+
+ int fd; /* ro */
+ int events; /* ro */
+} ev_io;
+
+/* invoked after a specific time, repeatable (based on monotonic clock) */
+/* revent EV_TIMEOUT */
+typedef struct ev_timer
+{
+ EV_WATCHER_TIME (ev_timer)
+
+ ev_tstamp repeat; /* rw */
+} ev_timer;
+
+/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
+/* revent EV_PERIODIC */
+typedef struct ev_periodic
+{
+ EV_WATCHER_TIME (ev_periodic)
+
+ ev_tstamp offset; /* rw */
+ ev_tstamp interval; /* rw */
+ ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
+} ev_periodic;
+
+/* invoked when the given signal has been received */
+/* revent EV_SIGNAL */
+typedef struct ev_signal
+{
+ EV_WATCHER_LIST (ev_signal)
+
+ int signum; /* ro */
+} ev_signal;
+
+/* invoked when sigchld is received and waitpid indicates the given pid */
+/* revent EV_CHILD */
+/* does not support priorities */
+typedef struct ev_child
+{
+ EV_WATCHER_LIST (ev_child)
+
+ int flags; /* private */
+ int pid; /* ro */
+ int rpid; /* rw, holds the received pid */
+ int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
+} ev_child;
+
+#if EV_STAT_ENABLE
+/* st_nlink = 0 means missing file or other error */
+# ifdef _WIN32
+typedef struct _stati64 ev_statdata;
+# else
+typedef struct stat ev_statdata;
+# endif
+
+/* invoked each time the stat data changes for a given path */
+/* revent EV_STAT */
+typedef struct ev_stat
+{
+ EV_WATCHER_LIST (ev_stat)
+
+ ev_timer timer; /* private */
+ ev_tstamp interval; /* ro */
+ const char *path; /* ro */
+ ev_statdata prev; /* ro */
+ ev_statdata attr; /* ro */
+
+ int wd; /* wd for inotify, fd for kqueue */
+} ev_stat;
+#endif
+
+#if EV_IDLE_ENABLE
+/* invoked when the nothing else needs to be done, keeps the process from blocking */
+/* revent EV_IDLE */
+typedef struct ev_idle
+{
+ EV_WATCHER (ev_idle)
+} ev_idle;
+#endif
+
+/* invoked for each run of the mainloop, just before the blocking call */
+/* you can still change events in any way you like */
+/* revent EV_PREPARE */
+typedef struct ev_prepare
+{
+ EV_WATCHER (ev_prepare)
+} ev_prepare;
+
+/* invoked for each run of the mainloop, just after the blocking call */
+/* revent EV_CHECK */
+typedef struct ev_check
+{
+ EV_WATCHER (ev_check)
+} ev_check;
+
+#if EV_FORK_ENABLE
+/* the callback gets invoked before check in the child process when a fork was detected */
+/* revent EV_FORK */
+typedef struct ev_fork
+{
+ EV_WATCHER (ev_fork)
+} ev_fork;
+#endif
+
+#if EV_CLEANUP_ENABLE
+/* is invoked just before the loop gets destroyed */
+/* revent EV_CLEANUP */
+typedef struct ev_cleanup
+{
+ EV_WATCHER (ev_cleanup)
+} ev_cleanup;
+#endif
+
+#if EV_EMBED_ENABLE
+/* used to embed an event loop inside another */
+/* the callback gets invoked when the event loop has handled events, and can be 0 */
+typedef struct ev_embed
+{
+ EV_WATCHER (ev_embed)
+
+ struct ev_loop *other; /* ro */
+ ev_io io; /* private */
+ ev_prepare prepare; /* private */
+ ev_check check; /* unused */
+ ev_timer timer; /* unused */
+ ev_periodic periodic; /* unused */
+ ev_idle idle; /* unused */
+ ev_fork fork; /* private */
+#if EV_CLEANUP_ENABLE
+ ev_cleanup cleanup; /* unused */
+#endif
+} ev_embed;
+#endif
+
+#if EV_ASYNC_ENABLE
+/* invoked when somebody calls ev_async_send on the watcher */
+/* revent EV_ASYNC */
+typedef struct ev_async
+{
+ EV_WATCHER (ev_async)
+
+ EV_ATOMIC_T sent; /* private */
+} ev_async;
+
+# define ev_async_pending(w) (+(w)->sent)
+#endif
+
+/* the presence of this union forces similar struct layout */
+union ev_any_watcher
+{
+ struct ev_watcher w;
+ struct ev_watcher_list wl;
+
+ struct ev_io io;
+ struct ev_timer timer;
+ struct ev_periodic periodic;
+ struct ev_signal signal;
+ struct ev_child child;
+#if EV_STAT_ENABLE
+ struct ev_stat stat;
+#endif
+#if EV_IDLE_ENABLE
+ struct ev_idle idle;
+#endif
+ struct ev_prepare prepare;
+ struct ev_check check;
+#if EV_FORK_ENABLE
+ struct ev_fork fork;
+#endif
+#if EV_CLEANUP_ENABLE
+ struct ev_cleanup cleanup;
+#endif
+#if EV_EMBED_ENABLE
+ struct ev_embed embed;
+#endif
+#if EV_ASYNC_ENABLE
+ struct ev_async async;
+#endif
+};
+
+/* flag bits for ev_default_loop and ev_loop_new */
+enum {
+ /* the default */
+ EVFLAG_AUTO = 0x00000000U, /* not quite a mask */
+ /* flag bits */
+ EVFLAG_NOENV = 0x01000000U, /* do NOT consult environment */
+ EVFLAG_FORKCHECK = 0x02000000U, /* check for a fork in each iteration */
+ /* debugging/feature disable */
+ EVFLAG_NOINOTIFY = 0x00100000U, /* do not attempt to use inotify */
+#if EV_COMPAT3
+ EVFLAG_NOSIGFD = 0, /* compatibility to pre-3.9 */
+#endif
+ EVFLAG_SIGNALFD = 0x00200000U, /* attempt to use signalfd */
+ EVFLAG_NOSIGMASK = 0x00400000U /* avoid modifying the signal mask */
+};
+
+/* method bits to be ored together */
+enum {
+ EVBACKEND_SELECT = 0x00000001U, /* about anywhere */
+ EVBACKEND_POLL = 0x00000002U, /* !win */
+ EVBACKEND_EPOLL = 0x00000004U, /* linux */
+ EVBACKEND_KQUEUE = 0x00000008U, /* bsd */
+ EVBACKEND_DEVPOLL = 0x00000010U, /* solaris 8 */ /* NYI */
+ EVBACKEND_PORT = 0x00000020U, /* solaris 10 */
+ EVBACKEND_ALL = 0x0000003FU, /* all known backends */
+ EVBACKEND_MASK = 0x0000FFFFU /* all future backends */
+};
+
+#if EV_PROTOTYPES
+int ev_version_major (void);
+int ev_version_minor (void);
+
+unsigned int ev_supported_backends (void);
+unsigned int ev_recommended_backends (void);
+unsigned int ev_embeddable_backends (void);
+
+ev_tstamp ev_time (void);
+void ev_sleep (ev_tstamp delay); /* sleep for a while */
+
+/* Sets the allocation function to use, works like realloc.
+ * It is used to allocate and free memory.
+ * If it returns zero when memory needs to be allocated, the library might abort
+ * or take some potentially destructive action.
+ * The default is your system realloc function.
+ */
+void ev_set_allocator (void *(*cb)(void *ptr, long size));
+
+/* set the callback function to call on a
+ * retryable syscall error
+ * (such as failed select, poll, epoll_wait)
+ */
+void ev_set_syserr_cb (void (*cb)(const char *msg));
+
+#if EV_MULTIPLICITY
+
+/* the default loop is the only one that handles signals and child watchers */
+/* you can call this as often as you like */
+struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0));
+
+EV_INLINE struct ev_loop *
+ev_default_loop_uc_ (void)
+{
+ extern struct ev_loop *ev_default_loop_ptr;
+
+ return ev_default_loop_ptr;
+}
+
+EV_INLINE int
+ev_is_default_loop (EV_P)
+{
+ return EV_A == EV_DEFAULT_UC;
+}
+
+/* create and destroy alternative loops that don't handle signals */
+struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0));
+
+ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
+
+#else
+
+int ev_default_loop (unsigned int flags EV_CPP (= 0)); /* returns true when successful */
+
+EV_INLINE ev_tstamp
+ev_now (void)
+{
+ extern ev_tstamp ev_rt_now;
+
+ return ev_rt_now;
+}
+
+/* looks weird, but ev_is_default_loop (EV_A) still works if this exists */
+EV_INLINE int
+ev_is_default_loop (void)
+{
+ return 1;
+}
+
+#endif /* multiplicity */
+
+/* destroy event loops, also works for the default loop */
+void ev_loop_destroy (EV_P);
+
+/* this needs to be called after fork, to duplicate the loop */
+/* when you want to re-use it in the child */
+/* you can call it in either the parent or the child */
+/* you can actually call it at any time, anywhere :) */
+void ev_loop_fork (EV_P);
+
+unsigned int ev_backend (EV_P); /* backend in use by loop */
+
+void ev_now_update (EV_P); /* update event loop time */
+
+#if EV_WALK_ENABLE
+/* walk (almost) all watchers in the loop of a given type, invoking the */
+/* callback on every such watcher. The callback might stop the watcher, */
+/* but do nothing else with the loop */
+void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w));
+#endif
+
+#endif /* prototypes */
+
+/* ev_run flags values */
+enum {
+ EVRUN_NOWAIT = 1, /* do not block/wait */
+ EVRUN_ONCE = 2 /* block *once* only */
+};
+
+/* ev_break how values */
+enum {
+ EVBREAK_CANCEL = 0, /* undo unloop */
+ EVBREAK_ONE = 1, /* unloop once */
+ EVBREAK_ALL = 2 /* unloop all loops */
+};
+
+#if EV_PROTOTYPES
+void ev_run (EV_P_ int flags EV_CPP (= 0));
+void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)); /* break out of the loop */
+
+/*
+ * ref/unref can be used to add or remove a refcount on the mainloop. every watcher
+ * keeps one reference. if you have a long-running watcher you never unregister that
+ * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
+ */
+void ev_ref (EV_P);
+void ev_unref (EV_P);
+
+/*
+ * convenience function, wait for a single event, without registering an event watcher
+ * if timeout is < 0, do wait indefinitely
+ */
+void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
+
+# if EV_FEATURE_API
+unsigned int ev_iteration (EV_P); /* number of loop iterations */
+unsigned int ev_depth (EV_P); /* #ev_loop enters - #ev_loop leaves */
+void ev_verify (EV_P); /* abort if loop data corrupted */
+
+void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
+void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
+
+/* advanced stuff for threading etc. support, see docs */
+void ev_set_userdata (EV_P_ void *data);
+void *ev_userdata (EV_P);
+void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P));
+void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P));
+
+unsigned int ev_pending_count (EV_P); /* number of pending events, if any */
+void ev_invoke_pending (EV_P); /* invoke all pending watchers */
+
+/*
+ * stop/start the timer handling.
+ */
+void ev_suspend (EV_P);
+void ev_resume (EV_P);
+#endif
+
+#endif
+
+/* these may evaluate ev multiple times, and the other arguments at most once */
+/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
+#define ev_init(ev,cb_) do { \
+ ((ev_watcher *)(void *)(ev))->active = \
+ ((ev_watcher *)(void *)(ev))->pending = 0; \
+ ev_set_priority ((ev), 0); \
+ ev_set_cb ((ev), cb_); \
+} while (0)
+
+#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0)
+#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
+#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
+#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
+#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
+#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
+#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
+#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_cleanup_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_async_set(ev) /* nop, yes, this is a serious in-joke */
+
+#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
+#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
+#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
+#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
+#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
+#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
+#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
+#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
+#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
+#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
+#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
+#define ev_cleanup_init(ev,cb) do { ev_init ((ev), (cb)); ev_cleanup_set ((ev)); } while (0)
+#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
+
+#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
+#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
+
+#define ev_cb(ev) (ev)->cb /* rw */
+
+#if EV_MINPRI == EV_MAXPRI
+# define ev_priority(ev) ((ev), EV_MINPRI)
+# define ev_set_priority(ev,pri) ((ev), (pri))
+#else
+# define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority))
+# define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri)
+#endif
+
+#define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at)
+
+#ifndef ev_set_cb
+# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
+#endif
+
+/* stopping (enabling, adding) a watcher does nothing if it is already running */
+/* stopping (disabling, deleting) a watcher does nothing unless its already running */
+#if EV_PROTOTYPES
+
+/* feeds an event into a watcher as if the event actually occured */
+/* accepts any ev_watcher type */
+void ev_feed_event (EV_P_ void *w, int revents);
+void ev_feed_fd_event (EV_P_ int fd, int revents);
+#if EV_SIGNAL_ENABLE
+void ev_feed_signal (int signum);
+void ev_feed_signal_event (EV_P_ int signum);
+#endif
+void ev_invoke (EV_P_ void *w, int revents);
+int ev_clear_pending (EV_P_ void *w);
+
+void ev_io_start (EV_P_ ev_io *w);
+void ev_io_stop (EV_P_ ev_io *w);
+
+void ev_timer_start (EV_P_ ev_timer *w);
+void ev_timer_stop (EV_P_ ev_timer *w);
+/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
+void ev_timer_again (EV_P_ ev_timer *w);
+/* return remaining time */
+ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w);
+
+#if EV_PERIODIC_ENABLE
+void ev_periodic_start (EV_P_ ev_periodic *w);
+void ev_periodic_stop (EV_P_ ev_periodic *w);
+void ev_periodic_again (EV_P_ ev_periodic *w);
+#endif
+
+/* only supported in the default loop */
+#if EV_SIGNAL_ENABLE
+void ev_signal_start (EV_P_ ev_signal *w);
+void ev_signal_stop (EV_P_ ev_signal *w);
+#endif
+
+/* only supported in the default loop */
+# if EV_CHILD_ENABLE
+void ev_child_start (EV_P_ ev_child *w);
+void ev_child_stop (EV_P_ ev_child *w);
+# endif
+
+# if EV_STAT_ENABLE
+void ev_stat_start (EV_P_ ev_stat *w);
+void ev_stat_stop (EV_P_ ev_stat *w);
+void ev_stat_stat (EV_P_ ev_stat *w);
+# endif
+
+# if EV_IDLE_ENABLE
+void ev_idle_start (EV_P_ ev_idle *w);
+void ev_idle_stop (EV_P_ ev_idle *w);
+# endif
+
+#if EV_PREPARE_ENABLE
+void ev_prepare_start (EV_P_ ev_prepare *w);
+void ev_prepare_stop (EV_P_ ev_prepare *w);
+#endif
+
+#if EV_CHECK_ENABLE
+void ev_check_start (EV_P_ ev_check *w);
+void ev_check_stop (EV_P_ ev_check *w);
+#endif
+
+# if EV_FORK_ENABLE
+void ev_fork_start (EV_P_ ev_fork *w);
+void ev_fork_stop (EV_P_ ev_fork *w);
+# endif
+
+# if EV_CLEANUP_ENABLE
+void ev_cleanup_start (EV_P_ ev_cleanup *w);
+void ev_cleanup_stop (EV_P_ ev_cleanup *w);
+# endif
+
+# if EV_EMBED_ENABLE
+/* only supported when loop to be embedded is in fact embeddable */
+void ev_embed_start (EV_P_ ev_embed *w);
+void ev_embed_stop (EV_P_ ev_embed *w);
+void ev_embed_sweep (EV_P_ ev_embed *w);
+# endif
+
+# if EV_ASYNC_ENABLE
+void ev_async_start (EV_P_ ev_async *w);
+void ev_async_stop (EV_P_ ev_async *w);
+void ev_async_send (EV_P_ ev_async *w);
+# endif
+
+#if EV_COMPAT3
+ #define EVLOOP_NONBLOCK EVRUN_NOWAIT
+ #define EVLOOP_ONESHOT EVRUN_ONCE
+ #define EVUNLOOP_CANCEL EVBREAK_CANCEL
+ #define EVUNLOOP_ONE EVBREAK_ONE
+ #define EVUNLOOP_ALL EVBREAK_ALL
+ #if EV_PROTOTYPES
+ EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); }
+ EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); }
+ EV_INLINE void ev_default_destroy (void) { ev_loop_destroy (EV_DEFAULT); }
+ EV_INLINE void ev_default_fork (void) { ev_loop_fork (EV_DEFAULT); }
+ #if EV_FEATURE_API
+ EV_INLINE unsigned int ev_loop_count (EV_P) { return ev_iteration (EV_A); }
+ EV_INLINE unsigned int ev_loop_depth (EV_P) { return ev_depth (EV_A); }
+ EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_A); }
+ #endif
+ #endif
+#else
+ typedef struct ev_loop ev_loop;
+#endif
+
+#endif
+
+EV_CPP(})
+
+#endif
+
--- /dev/null
+=head1 NAME
+
+libev - a high performance full-featured event loop written in C
+
+=head1 SYNOPSIS
+
+ #include <ev.h>
+
+=head2 EXAMPLE PROGRAM
+
+ // a single header file is required
+ #include <ev.h>
+
+ #include <stdio.h> // for puts
+
+ // every watcher type has its own typedef'd struct
+ // with the name ev_TYPE
+ ev_io stdin_watcher;
+ ev_timer timeout_watcher;
+
+ // all watcher callbacks have a similar signature
+ // this callback is called when data is readable on stdin
+ static void
+ stdin_cb (EV_P_ ev_io *w, int revents)
+ {
+ puts ("stdin ready");
+ // for one-shot events, one must manually stop the watcher
+ // with its corresponding stop function.
+ ev_io_stop (EV_A_ w);
+
+ // this causes all nested ev_run's to stop iterating
+ ev_break (EV_A_ EVBREAK_ALL);
+ }
+
+ // another callback, this time for a time-out
+ static void
+ timeout_cb (EV_P_ ev_timer *w, int revents)
+ {
+ puts ("timeout");
+ // this causes the innermost ev_run to stop iterating
+ ev_break (EV_A_ EVBREAK_ONE);
+ }
+
+ int
+ main (void)
+ {
+ // use the default event loop unless you have special needs
+ struct ev_loop *loop = EV_DEFAULT;
+
+ // initialise an io watcher, then start it
+ // this one will watch for stdin to become readable
+ ev_io_init (&stdin_watcher, stdin_cb, /*STDIN_FILENO*/ 0, EV_READ);
+ ev_io_start (loop, &stdin_watcher);
+
+ // initialise a timer watcher, then start it
+ // simple non-repeating 5.5 second timeout
+ ev_timer_init (&timeout_watcher, timeout_cb, 5.5, 0.);
+ ev_timer_start (loop, &timeout_watcher);
+
+ // now wait for events to arrive
+ ev_run (loop, 0);
+
+ // break was called, so exit
+ return 0;
+ }
+
+=head1 ABOUT THIS DOCUMENT
+
+This document documents the libev software package.
+
+The newest version of this document is also available as an html-formatted
+web page you might find easier to navigate when reading it for the first
+time: L<http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod>.
+
+While this document tries to be as complete as possible in documenting
+libev, its usage and the rationale behind its design, it is not a tutorial
+on event-based programming, nor will it introduce event-based programming
+with libev.
+
+Familiarity with event based programming techniques in general is assumed
+throughout this document.
+
+=head1 WHAT TO READ WHEN IN A HURRY
+
+This manual tries to be very detailed, but unfortunately, this also makes
+it very long. If you just want to know the basics of libev, I suggest
+reading L<ANATOMY OF A WATCHER>, then the L<EXAMPLE PROGRAM> above and
+look up the missing functions in L<GLOBAL FUNCTIONS> and the C<ev_io> and
+C<ev_timer> sections in L<WATCHER TYPES>.
+
+=head1 ABOUT LIBEV
+
+Libev is an event loop: you register interest in certain events (such as a
+file descriptor being readable or a timeout occurring), and it will manage
+these event sources and provide your program with events.
+
+To do this, it must take more or less complete control over your process
+(or thread) by executing the I<event loop> handler, and will then
+communicate events via a callback mechanism.
+
+You register interest in certain events by registering so-called I<event
+watchers>, which are relatively small C structures you initialise with the
+details of the event, and then hand it over to libev by I<starting> the
+watcher.
+
+=head2 FEATURES
+
+Libev supports C<select>, C<poll>, the Linux-specific C<epoll>, the
+BSD-specific C<kqueue> and the Solaris-specific event port mechanisms
+for file descriptor events (C<ev_io>), the Linux C<inotify> interface
+(for C<ev_stat>), Linux eventfd/signalfd (for faster and cleaner
+inter-thread wakeup (C<ev_async>)/signal handling (C<ev_signal>)) relative
+timers (C<ev_timer>), absolute timers with customised rescheduling
+(C<ev_periodic>), synchronous signals (C<ev_signal>), process status
+change events (C<ev_child>), and event watchers dealing with the event
+loop mechanism itself (C<ev_idle>, C<ev_embed>, C<ev_prepare> and
+C<ev_check> watchers) as well as file watchers (C<ev_stat>) and even
+limited support for fork events (C<ev_fork>).
+
+It also is quite fast (see this
+L<benchmark|http://libev.schmorp.de/bench.html> comparing it to libevent
+for example).
+
+=head2 CONVENTIONS
+
+Libev is very configurable. In this manual the default (and most common)
+configuration will be described, which supports multiple event loops. For
+more info about various configuration options please have a look at
+B<EMBED> section in this manual. If libev was configured without support
+for multiple event loops, then all functions taking an initial argument of
+name C<loop> (which is always of type C<struct ev_loop *>) will not have
+this argument.
+
+=head2 TIME REPRESENTATION
+
+Libev represents time as a single floating point number, representing
+the (fractional) number of seconds since the (POSIX) epoch (in practice
+somewhere near the beginning of 1970, details are complicated, don't
+ask). This type is called C<ev_tstamp>, which is what you should use
+too. It usually aliases to the C<double> type in C. When you need to do
+any calculations on it, you should treat it as some floating point value.
+
+Unlike the name component C<stamp> might indicate, it is also used for
+time differences (e.g. delays) throughout libev.
+
+=head1 ERROR HANDLING
+
+Libev knows three classes of errors: operating system errors, usage errors
+and internal errors (bugs).
+
+When libev catches an operating system error it cannot handle (for example
+a system call indicating a condition libev cannot fix), it calls the callback
+set via C<ev_set_syserr_cb>, which is supposed to fix the problem or
+abort. The default is to print a diagnostic message and to call C<abort
+()>.
+
+When libev detects a usage error such as a negative timer interval, then
+it will print a diagnostic message and abort (via the C<assert> mechanism,
+so C<NDEBUG> will disable this checking): these are programming errors in
+the libev caller and need to be fixed there.
+
+Libev also has a few internal error-checking C<assert>ions, and also has
+extensive consistency checking code. These do not trigger under normal
+circumstances, as they indicate either a bug in libev or worse.
+
+
+=head1 GLOBAL FUNCTIONS
+
+These functions can be called anytime, even before initialising the
+library in any way.
+
+=over 4
+
+=item ev_tstamp ev_time ()
+
+Returns the current time as libev would use it. Please note that the
+C<ev_now> function is usually faster and also often returns the timestamp
+you actually want to know. Also interesting is the combination of
+C<ev_update_now> and C<ev_now>.
+
+=item ev_sleep (ev_tstamp interval)
+
+Sleep for the given interval: The current thread will be blocked until
+either it is interrupted or the given time interval has passed. Basically
+this is a sub-second-resolution C<sleep ()>.
+
+=item int ev_version_major ()
+
+=item int ev_version_minor ()
+
+You can find out the major and minor ABI version numbers of the library
+you linked against by calling the functions C<ev_version_major> and
+C<ev_version_minor>. If you want, you can compare against the global
+symbols C<EV_VERSION_MAJOR> and C<EV_VERSION_MINOR>, which specify the
+version of the library your program was compiled against.
+
+These version numbers refer to the ABI version of the library, not the
+release version.
+
+Usually, it's a good idea to terminate if the major versions mismatch,
+as this indicates an incompatible change. Minor versions are usually
+compatible to older versions, so a larger minor version alone is usually
+not a problem.
+
+Example: Make sure we haven't accidentally been linked against the wrong
+version (note, however, that this will not detect other ABI mismatches,
+such as LFS or reentrancy).
+
+ assert (("libev version mismatch",
+ ev_version_major () == EV_VERSION_MAJOR
+ && ev_version_minor () >= EV_VERSION_MINOR));
+
+=item unsigned int ev_supported_backends ()
+
+Return the set of all backends (i.e. their corresponding C<EV_BACKEND_*>
+value) compiled into this binary of libev (independent of their
+availability on the system you are running on). See C<ev_default_loop> for
+a description of the set values.
+
+Example: make sure we have the epoll method, because yeah this is cool and
+a must have and can we have a torrent of it please!!!11
+
+ assert (("sorry, no epoll, no sex",
+ ev_supported_backends () & EVBACKEND_EPOLL));
+
+=item unsigned int ev_recommended_backends ()
+
+Return the set of all backends compiled into this binary of libev and
+also recommended for this platform, meaning it will work for most file
+descriptor types. This set is often smaller than the one returned by
+C<ev_supported_backends>, as for example kqueue is broken on most BSDs
+and will not be auto-detected unless you explicitly request it (assuming
+you know what you are doing). This is the set of backends that libev will
+probe for if you specify no backends explicitly.
+
+=item unsigned int ev_embeddable_backends ()
+
+Returns the set of backends that are embeddable in other event loops. This
+value is platform-specific but can include backends not available on the
+current system. To find which embeddable backends might be supported on
+the current system, you would need to look at C<ev_embeddable_backends ()
+& ev_supported_backends ()>, likewise for recommended ones.
+
+See the description of C<ev_embed> watchers for more info.
+
+=item ev_set_allocator (void *(*cb)(void *ptr, long size))
+
+Sets the allocation function to use (the prototype is similar - the
+semantics are identical to the C<realloc> C89/SuS/POSIX function). It is
+used to allocate and free memory (no surprises here). If it returns zero
+when memory needs to be allocated (C<size != 0>), the library might abort
+or take some potentially destructive action.
+
+Since some systems (at least OpenBSD and Darwin) fail to implement
+correct C<realloc> semantics, libev will use a wrapper around the system
+C<realloc> and C<free> functions by default.
+
+You could override this function in high-availability programs to, say,
+free some memory if it cannot allocate memory, to use a special allocator,
+or even to sleep a while and retry until some memory is available.
+
+Example: Replace the libev allocator with one that waits a bit and then
+retries (example requires a standards-compliant C<realloc>).
+
+ static void *
+ persistent_realloc (void *ptr, size_t size)
+ {
+ for (;;)
+ {
+ void *newptr = realloc (ptr, size);
+
+ if (newptr)
+ return newptr;
+
+ sleep (60);
+ }
+ }
+
+ ...
+ ev_set_allocator (persistent_realloc);
+
+=item ev_set_syserr_cb (void (*cb)(const char *msg))
+
+Set the callback function to call on a retryable system call error (such
+as failed select, poll, epoll_wait). The message is a printable string
+indicating the system call or subsystem causing the problem. If this
+callback is set, then libev will expect it to remedy the situation, no
+matter what, when it returns. That is, libev will generally retry the
+requested operation, or, if the condition doesn't go away, do bad stuff
+(such as abort).
+
+Example: This is basically the same thing that libev does internally, too.
+
+ static void
+ fatal_error (const char *msg)
+ {
+ perror (msg);
+ abort ();
+ }
+
+ ...
+ ev_set_syserr_cb (fatal_error);
+
+=item ev_feed_signal (int signum)
+
+This function can be used to "simulate" a signal receive. It is completely
+safe to call this function at any time, from any context, including signal
+handlers or random threads.
+
+Its main use is to customise signal handling in your process, especially
+in the presence of threads. For example, you could block signals
+by default in all threads (and specifying C<EVFLAG_NOSIGMASK> when
+creating any loops), and in one thread, use C<sigwait> or any other
+mechanism to wait for signals, then "deliver" them to libev by calling
+C<ev_feed_signal>.
+
+=back
+
+=head1 FUNCTIONS CONTROLLING EVENT LOOPS
+
+An event loop is described by a C<struct ev_loop *> (the C<struct> is
+I<not> optional in this case unless libev 3 compatibility is disabled, as
+libev 3 had an C<ev_loop> function colliding with the struct name).
+
+The library knows two types of such loops, the I<default> loop, which
+supports child process events, and dynamically created event loops which
+do not.
+
+=over 4
+
+=item struct ev_loop *ev_default_loop (unsigned int flags)
+
+This returns the "default" event loop object, which is what you should
+normally use when you just need "the event loop". Event loop objects and
+the C<flags> parameter are described in more detail in the entry for
+C<ev_loop_new>.
+
+If the default loop is already initialised then this function simply
+returns it (and ignores the flags. If that is troubling you, check
+C<ev_backend ()> afterwards). Otherwise it will create it with the given
+flags, which should almost always be C<0>, unless the caller is also the
+one calling C<ev_run> or otherwise qualifies as "the main program".
+
+If you don't know what event loop to use, use the one returned from this
+function (or via the C<EV_DEFAULT> macro).
+
+Note that this function is I<not> thread-safe, so if you want to use it
+from multiple threads, you have to employ some kind of mutex (note also
+that this case is unlikely, as loops cannot be shared easily between
+threads anyway).
+
+The default loop is the only loop that can handle C<ev_child> watchers,
+and to do this, it always registers a handler for C<SIGCHLD>. If this is
+a problem for your application you can either create a dynamic loop with
+C<ev_loop_new> which doesn't do that, or you can simply overwrite the
+C<SIGCHLD> signal handler I<after> calling C<ev_default_init>.
+
+Example: This is the most typical usage.
+
+ if (!ev_default_loop (0))
+ fatal ("could not initialise libev, bad $LIBEV_FLAGS in environment?");
+
+Example: Restrict libev to the select and poll backends, and do not allow
+environment settings to be taken into account:
+
+ ev_default_loop (EVBACKEND_POLL | EVBACKEND_SELECT | EVFLAG_NOENV);
+
+=item struct ev_loop *ev_loop_new (unsigned int flags)
+
+This will create and initialise a new event loop object. If the loop
+could not be initialised, returns false.
+
+This function is thread-safe, and one common way to use libev with
+threads is indeed to create one loop per thread, and using the default
+loop in the "main" or "initial" thread.
+
+The flags argument can be used to specify special behaviour or specific
+backends to use, and is usually specified as C<0> (or C<EVFLAG_AUTO>).
+
+The following flags are supported:
+
+=over 4
+
+=item C<EVFLAG_AUTO>
+
+The default flags value. Use this if you have no clue (it's the right
+thing, believe me).
+
+=item C<EVFLAG_NOENV>
+
+If this flag bit is or'ed into the flag value (or the program runs setuid
+or setgid) then libev will I<not> look at the environment variable
+C<LIBEV_FLAGS>. Otherwise (the default), this environment variable will
+override the flags completely if it is found in the environment. This is
+useful to try out specific backends to test their performance, or to work
+around bugs.
+
+=item C<EVFLAG_FORKCHECK>
+
+Instead of calling C<ev_loop_fork> manually after a fork, you can also
+make libev check for a fork in each iteration by enabling this flag.
+
+This works by calling C<getpid ()> on every iteration of the loop,
+and thus this might slow down your event loop if you do a lot of loop
+iterations and little real work, but is usually not noticeable (on my
+GNU/Linux system for example, C<getpid> is actually a simple 5-insn sequence
+without a system call and thus I<very> fast, but my GNU/Linux system also has
+C<pthread_atfork> which is even faster).
+
+The big advantage of this flag is that you can forget about fork (and
+forget about forgetting to tell libev about forking) when you use this
+flag.
+
+This flag setting cannot be overridden or specified in the C<LIBEV_FLAGS>
+environment variable.
+
+=item C<EVFLAG_NOINOTIFY>
+
+When this flag is specified, then libev will not attempt to use the
+I<inotify> API for its C<ev_stat> watchers. Apart from debugging and
+testing, this flag can be useful to conserve inotify file descriptors, as
+otherwise each loop using C<ev_stat> watchers consumes one inotify handle.
+
+=item C<EVFLAG_SIGNALFD>
+
+When this flag is specified, then libev will attempt to use the
+I<signalfd> API for its C<ev_signal> (and C<ev_child>) watchers. This API
+delivers signals synchronously, which makes it both faster and might make
+it possible to get the queued signal data. It can also simplify signal
+handling with threads, as long as you properly block signals in your
+threads that are not interested in handling them.
+
+Signalfd will not be used by default as this changes your signal mask, and
+there are a lot of shoddy libraries and programs (glib's threadpool for
+example) that can't properly initialise their signal masks.
+
+=item C<EVFLAG_NOSIGMASK>
+
+When this flag is specified, then libev will avoid to modify the signal
+mask. Specifically, this means you ahve to make sure signals are unblocked
+when you want to receive them.
+
+This behaviour is useful when you want to do your own signal handling, or
+want to handle signals only in specific threads and want to avoid libev
+unblocking the signals.
+
+It's also required by POSIX in a threaded program, as libev calls
+C<sigprocmask>, whose behaviour is officially unspecified.
+
+This flag's behaviour will become the default in future versions of libev.
+
+=item C<EVBACKEND_SELECT> (value 1, portable select backend)
+
+This is your standard select(2) backend. Not I<completely> standard, as
+libev tries to roll its own fd_set with no limits on the number of fds,
+but if that fails, expect a fairly low limit on the number of fds when
+using this backend. It doesn't scale too well (O(highest_fd)), but its
+usually the fastest backend for a low number of (low-numbered :) fds.
+
+To get good performance out of this backend you need a high amount of
+parallelism (most of the file descriptors should be busy). If you are
+writing a server, you should C<accept ()> in a loop to accept as many
+connections as possible during one iteration. You might also want to have
+a look at C<ev_set_io_collect_interval ()> to increase the amount of
+readiness notifications you get per iteration.
+
+This backend maps C<EV_READ> to the C<readfds> set and C<EV_WRITE> to the
+C<writefds> set (and to work around Microsoft Windows bugs, also onto the
+C<exceptfds> set on that platform).
+
+=item C<EVBACKEND_POLL> (value 2, poll backend, available everywhere except on windows)
+
+And this is your standard poll(2) backend. It's more complicated
+than select, but handles sparse fds better and has no artificial
+limit on the number of fds you can use (except it will slow down
+considerably with a lot of inactive fds). It scales similarly to select,
+i.e. O(total_fds). See the entry for C<EVBACKEND_SELECT>, above, for
+performance tips.
+
+This backend maps C<EV_READ> to C<POLLIN | POLLERR | POLLHUP>, and
+C<EV_WRITE> to C<POLLOUT | POLLERR | POLLHUP>.
+
+=item C<EVBACKEND_EPOLL> (value 4, Linux)
+
+Use the linux-specific epoll(7) interface (for both pre- and post-2.6.9
+kernels).
+
+For few fds, this backend is a bit little slower than poll and select,
+but it scales phenomenally better. While poll and select usually scale
+like O(total_fds) where n is the total number of fds (or the highest fd),
+epoll scales either O(1) or O(active_fds).
+
+The epoll mechanism deserves honorable mention as the most misdesigned
+of the more advanced event mechanisms: mere annoyances include silently
+dropping file descriptors, requiring a system call per change per file
+descriptor (and unnecessary guessing of parameters), problems with dup,
+returning before the timeout value, resulting in additional iterations
+(and only giving 5ms accuracy while select on the same platform gives
+0.1ms) and so on. The biggest issue is fork races, however - if a program
+forks then I<both> parent and child process have to recreate the epoll
+set, which can take considerable time (one syscall per file descriptor)
+and is of course hard to detect.
+
+Epoll is also notoriously buggy - embedding epoll fds I<should> work, but
+of course I<doesn't>, and epoll just loves to report events for totally
+I<different> file descriptors (even already closed ones, so one cannot
+even remove them from the set) than registered in the set (especially
+on SMP systems). Libev tries to counter these spurious notifications by
+employing an additional generation counter and comparing that against the
+events to filter out spurious ones, recreating the set when required. Last
+not least, it also refuses to work with some file descriptors which work
+perfectly fine with C<select> (files, many character devices...).
+
+Epoll is truly the train wreck analog among event poll mechanisms,
+a frankenpoll, cobbled together in a hurry, no thought to design or
+interaction with others.
+
+While stopping, setting and starting an I/O watcher in the same iteration
+will result in some caching, there is still a system call per such
+incident (because the same I<file descriptor> could point to a different
+I<file description> now), so its best to avoid that. Also, C<dup ()>'ed
+file descriptors might not work very well if you register events for both
+file descriptors.
+
+Best performance from this backend is achieved by not unregistering all
+watchers for a file descriptor until it has been closed, if possible,
+i.e. keep at least one watcher active per fd at all times. Stopping and
+starting a watcher (without re-setting it) also usually doesn't cause
+extra overhead. A fork can both result in spurious notifications as well
+as in libev having to destroy and recreate the epoll object, which can
+take considerable time and thus should be avoided.
+
+All this means that, in practice, C<EVBACKEND_SELECT> can be as fast or
+faster than epoll for maybe up to a hundred file descriptors, depending on
+the usage. So sad.
+
+While nominally embeddable in other event loops, this feature is broken in
+all kernel versions tested so far.
+
+This backend maps C<EV_READ> and C<EV_WRITE> in the same way as
+C<EVBACKEND_POLL>.
+
+=item C<EVBACKEND_KQUEUE> (value 8, most BSD clones)
+
+Kqueue deserves special mention, as at the time of this writing, it
+was broken on all BSDs except NetBSD (usually it doesn't work reliably
+with anything but sockets and pipes, except on Darwin, where of course
+it's completely useless). Unlike epoll, however, whose brokenness
+is by design, these kqueue bugs can (and eventually will) be fixed
+without API changes to existing programs. For this reason it's not being
+"auto-detected" unless you explicitly specify it in the flags (i.e. using
+C<EVBACKEND_KQUEUE>) or libev was compiled on a known-to-be-good (-enough)
+system like NetBSD.
+
+You still can embed kqueue into a normal poll or select backend and use it
+only for sockets (after having made sure that sockets work with kqueue on
+the target platform). See C<ev_embed> watchers for more info.
+
+It scales in the same way as the epoll backend, but the interface to the
+kernel is more efficient (which says nothing about its actual speed, of
+course). While stopping, setting and starting an I/O watcher does never
+cause an extra system call as with C<EVBACKEND_EPOLL>, it still adds up to
+two event changes per incident. Support for C<fork ()> is very bad (but
+sane, unlike epoll) and it drops fds silently in similarly hard-to-detect
+cases
+
+This backend usually performs well under most conditions.
+
+While nominally embeddable in other event loops, this doesn't work
+everywhere, so you might need to test for this. And since it is broken
+almost everywhere, you should only use it when you have a lot of sockets
+(for which it usually works), by embedding it into another event loop
+(e.g. C<EVBACKEND_SELECT> or C<EVBACKEND_POLL> (but C<poll> is of course
+also broken on OS X)) and, did I mention it, using it only for sockets.
+
+This backend maps C<EV_READ> into an C<EVFILT_READ> kevent with
+C<NOTE_EOF>, and C<EV_WRITE> into an C<EVFILT_WRITE> kevent with
+C<NOTE_EOF>.
+
+=item C<EVBACKEND_DEVPOLL> (value 16, Solaris 8)
+
+This is not implemented yet (and might never be, unless you send me an
+implementation). According to reports, C</dev/poll> only supports sockets
+and is not embeddable, which would limit the usefulness of this backend
+immensely.
+
+=item C<EVBACKEND_PORT> (value 32, Solaris 10)
+
+This uses the Solaris 10 event port mechanism. As with everything on Solaris,
+it's really slow, but it still scales very well (O(active_fds)).
+
+While this backend scales well, it requires one system call per active
+file descriptor per loop iteration. For small and medium numbers of file
+descriptors a "slow" C<EVBACKEND_SELECT> or C<EVBACKEND_POLL> backend
+might perform better.
+
+On the positive side, this backend actually performed fully to
+specification in all tests and is fully embeddable, which is a rare feat
+among the OS-specific backends (I vastly prefer correctness over speed
+hacks).
+
+On the negative side, the interface is I<bizarre> - so bizarre that
+even sun itself gets it wrong in their code examples: The event polling
+function sometimes returning events to the caller even though an error
+occurred, but with no indication whether it has done so or not (yes, it's
+even documented that way) - deadly for edge-triggered interfaces where
+you absolutely have to know whether an event occurred or not because you
+have to re-arm the watcher.
+
+Fortunately libev seems to be able to work around these idiocies.
+
+This backend maps C<EV_READ> and C<EV_WRITE> in the same way as
+C<EVBACKEND_POLL>.
+
+=item C<EVBACKEND_ALL>
+
+Try all backends (even potentially broken ones that wouldn't be tried
+with C<EVFLAG_AUTO>). Since this is a mask, you can do stuff such as
+C<EVBACKEND_ALL & ~EVBACKEND_KQUEUE>.
+
+It is definitely not recommended to use this flag, use whatever
+C<ev_recommended_backends ()> returns, or simply do not specify a backend
+at all.
+
+=item C<EVBACKEND_MASK>
+
+Not a backend at all, but a mask to select all backend bits from a
+C<flags> value, in case you want to mask out any backends from a flags
+value (e.g. when modifying the C<LIBEV_FLAGS> environment variable).
+
+=back
+
+If one or more of the backend flags are or'ed into the flags value,
+then only these backends will be tried (in the reverse order as listed
+here). If none are specified, all backends in C<ev_recommended_backends
+()> will be tried.
+
+Example: Try to create a event loop that uses epoll and nothing else.
+
+ struct ev_loop *epoller = ev_loop_new (EVBACKEND_EPOLL | EVFLAG_NOENV);
+ if (!epoller)
+ fatal ("no epoll found here, maybe it hides under your chair");
+
+Example: Use whatever libev has to offer, but make sure that kqueue is
+used if available.
+
+ struct ev_loop *loop = ev_loop_new (ev_recommended_backends () | EVBACKEND_KQUEUE);
+
+=item ev_loop_destroy (loop)
+
+Destroys an event loop object (frees all memory and kernel state
+etc.). None of the active event watchers will be stopped in the normal
+sense, so e.g. C<ev_is_active> might still return true. It is your
+responsibility to either stop all watchers cleanly yourself I<before>
+calling this function, or cope with the fact afterwards (which is usually
+the easiest thing, you can just ignore the watchers and/or C<free ()> them
+for example).
+
+Note that certain global state, such as signal state (and installed signal
+handlers), will not be freed by this function, and related watchers (such
+as signal and child watchers) would need to be stopped manually.
+
+This function is normally used on loop objects allocated by
+C<ev_loop_new>, but it can also be used on the default loop returned by
+C<ev_default_loop>, in which case it is not thread-safe.
+
+Note that it is not advisable to call this function on the default loop
+except in the rare occasion where you really need to free its resources.
+If you need dynamically allocated loops it is better to use C<ev_loop_new>
+and C<ev_loop_destroy>.
+
+=item ev_loop_fork (loop)
+
+This function sets a flag that causes subsequent C<ev_run> iterations to
+reinitialise the kernel state for backends that have one. Despite the
+name, you can call it anytime, but it makes most sense after forking, in
+the child process. You I<must> call it (or use C<EVFLAG_FORKCHECK>) in the
+child before resuming or calling C<ev_run>.
+
+Again, you I<have> to call it on I<any> loop that you want to re-use after
+a fork, I<even if you do not plan to use the loop in the parent>. This is
+because some kernel interfaces *cough* I<kqueue> *cough* do funny things
+during fork.
+
+On the other hand, you only need to call this function in the child
+process if and only if you want to use the event loop in the child. If
+you just fork+exec or create a new loop in the child, you don't have to
+call it at all (in fact, C<epoll> is so badly broken that it makes a
+difference, but libev will usually detect this case on its own and do a
+costly reset of the backend).
+
+The function itself is quite fast and it's usually not a problem to call
+it just in case after a fork.
+
+Example: Automate calling C<ev_loop_fork> on the default loop when
+using pthreads.
+
+ static void
+ post_fork_child (void)
+ {
+ ev_loop_fork (EV_DEFAULT);
+ }
+
+ ...
+ pthread_atfork (0, 0, post_fork_child);
+
+=item int ev_is_default_loop (loop)
+
+Returns true when the given loop is, in fact, the default loop, and false
+otherwise.
+
+=item unsigned int ev_iteration (loop)
+
+Returns the current iteration count for the event loop, which is identical
+to the number of times libev did poll for new events. It starts at C<0>
+and happily wraps around with enough iterations.
+
+This value can sometimes be useful as a generation counter of sorts (it
+"ticks" the number of loop iterations), as it roughly corresponds with
+C<ev_prepare> and C<ev_check> calls - and is incremented between the
+prepare and check phases.
+
+=item unsigned int ev_depth (loop)
+
+Returns the number of times C<ev_run> was entered minus the number of
+times C<ev_run> was exited normally, in other words, the recursion depth.
+
+Outside C<ev_run>, this number is zero. In a callback, this number is
+C<1>, unless C<ev_run> was invoked recursively (or from another thread),
+in which case it is higher.
+
+Leaving C<ev_run> abnormally (setjmp/longjmp, cancelling the thread,
+throwing an exception etc.), doesn't count as "exit" - consider this
+as a hint to avoid such ungentleman-like behaviour unless it's really
+convenient, in which case it is fully supported.
+
+=item unsigned int ev_backend (loop)
+
+Returns one of the C<EVBACKEND_*> flags indicating the event backend in
+use.
+
+=item ev_tstamp ev_now (loop)
+
+Returns the current "event loop time", which is the time the event loop
+received events and started processing them. This timestamp does not
+change as long as callbacks are being processed, and this is also the base
+time used for relative timers. You can treat it as the timestamp of the
+event occurring (or more correctly, libev finding out about it).
+
+=item ev_now_update (loop)
+
+Establishes the current time by querying the kernel, updating the time
+returned by C<ev_now ()> in the progress. This is a costly operation and
+is usually done automatically within C<ev_run ()>.
+
+This function is rarely useful, but when some event callback runs for a
+very long time without entering the event loop, updating libev's idea of
+the current time is a good idea.
+
+See also L<The special problem of time updates> in the C<ev_timer> section.
+
+=item ev_suspend (loop)
+
+=item ev_resume (loop)
+
+These two functions suspend and resume an event loop, for use when the
+loop is not used for a while and timeouts should not be processed.
+
+A typical use case would be an interactive program such as a game: When
+the user presses C<^Z> to suspend the game and resumes it an hour later it
+would be best to handle timeouts as if no time had actually passed while
+the program was suspended. This can be achieved by calling C<ev_suspend>
+in your C<SIGTSTP> handler, sending yourself a C<SIGSTOP> and calling
+C<ev_resume> directly afterwards to resume timer processing.
+
+Effectively, all C<ev_timer> watchers will be delayed by the time spend
+between C<ev_suspend> and C<ev_resume>, and all C<ev_periodic> watchers
+will be rescheduled (that is, they will lose any events that would have
+occurred while suspended).
+
+After calling C<ev_suspend> you B<must not> call I<any> function on the
+given loop other than C<ev_resume>, and you B<must not> call C<ev_resume>
+without a previous call to C<ev_suspend>.
+
+Calling C<ev_suspend>/C<ev_resume> has the side effect of updating the
+event loop time (see C<ev_now_update>).
+
+=item ev_run (loop, int flags)
+
+Finally, this is it, the event handler. This function usually is called
+after you have initialised all your watchers and you want to start
+handling events. It will ask the operating system for any new events, call
+the watcher callbacks, an then repeat the whole process indefinitely: This
+is why event loops are called I<loops>.
+
+If the flags argument is specified as C<0>, it will keep handling events
+until either no event watchers are active anymore or C<ev_break> was
+called.
+
+Please note that an explicit C<ev_break> is usually better than
+relying on all watchers to be stopped when deciding when a program has
+finished (especially in interactive programs), but having a program
+that automatically loops as long as it has to and no longer by virtue
+of relying on its watchers stopping correctly, that is truly a thing of
+beauty.
+
+This function is also I<mostly> exception-safe - you can break out of
+a C<ev_run> call by calling C<longjmp> in a callback, throwing a C++
+exception and so on. This does not decrement the C<ev_depth> value, nor
+will it clear any outstanding C<EVBREAK_ONE> breaks.
+
+A flags value of C<EVRUN_NOWAIT> will look for new events, will handle
+those events and any already outstanding ones, but will not wait and
+block your process in case there are no events and will return after one
+iteration of the loop. This is sometimes useful to poll and handle new
+events while doing lengthy calculations, to keep the program responsive.
+
+A flags value of C<EVRUN_ONCE> will look for new events (waiting if
+necessary) and will handle those and any already outstanding ones. It
+will block your process until at least one new event arrives (which could
+be an event internal to libev itself, so there is no guarantee that a
+user-registered callback will be called), and will return after one
+iteration of the loop.
+
+This is useful if you are waiting for some external event in conjunction
+with something not expressible using other libev watchers (i.e. "roll your
+own C<ev_run>"). However, a pair of C<ev_prepare>/C<ev_check> watchers is
+usually a better approach for this kind of thing.
+
+Here are the gory details of what C<ev_run> does:
+
+ - Increment loop depth.
+ - Reset the ev_break status.
+ - Before the first iteration, call any pending watchers.
+ LOOP:
+ - If EVFLAG_FORKCHECK was used, check for a fork.
+ - If a fork was detected (by any means), queue and call all fork watchers.
+ - Queue and call all prepare watchers.
+ - If ev_break was called, goto FINISH.
+ - If we have been forked, detach and recreate the kernel state
+ as to not disturb the other process.
+ - Update the kernel state with all outstanding changes.
+ - Update the "event loop time" (ev_now ()).
+ - Calculate for how long to sleep or block, if at all
+ (active idle watchers, EVRUN_NOWAIT or not having
+ any active watchers at all will result in not sleeping).
+ - Sleep if the I/O and timer collect interval say so.
+ - Increment loop iteration counter.
+ - Block the process, waiting for any events.
+ - Queue all outstanding I/O (fd) events.
+ - Update the "event loop time" (ev_now ()), and do time jump adjustments.
+ - Queue all expired timers.
+ - Queue all expired periodics.
+ - Queue all idle watchers with priority higher than that of pending events.
+ - Queue all check watchers.
+ - Call all queued watchers in reverse order (i.e. check watchers first).
+ Signals and child watchers are implemented as I/O watchers, and will
+ be handled here by queueing them when their watcher gets executed.
+ - If ev_break has been called, or EVRUN_ONCE or EVRUN_NOWAIT
+ were used, or there are no active watchers, goto FINISH, otherwise
+ continue with step LOOP.
+ FINISH:
+ - Reset the ev_break status iff it was EVBREAK_ONE.
+ - Decrement the loop depth.
+ - Return.
+
+Example: Queue some jobs and then loop until no events are outstanding
+anymore.
+
+ ... queue jobs here, make sure they register event watchers as long
+ ... as they still have work to do (even an idle watcher will do..)
+ ev_run (my_loop, 0);
+ ... jobs done or somebody called break. yeah!
+
+=item ev_break (loop, how)
+
+Can be used to make a call to C<ev_run> return early (but only after it
+has processed all outstanding events). The C<how> argument must be either
+C<EVBREAK_ONE>, which will make the innermost C<ev_run> call return, or
+C<EVBREAK_ALL>, which will make all nested C<ev_run> calls return.
+
+This "break state" will be cleared on the next call to C<ev_run>.
+
+It is safe to call C<ev_break> from outside any C<ev_run> calls, too, in
+which case it will have no effect.
+
+=item ev_ref (loop)
+
+=item ev_unref (loop)
+
+Ref/unref can be used to add or remove a reference count on the event
+loop: Every watcher keeps one reference, and as long as the reference
+count is nonzero, C<ev_run> will not return on its own.
+
+This is useful when you have a watcher that you never intend to
+unregister, but that nevertheless should not keep C<ev_run> from
+returning. In such a case, call C<ev_unref> after starting, and C<ev_ref>
+before stopping it.
+
+As an example, libev itself uses this for its internal signal pipe: It
+is not visible to the libev user and should not keep C<ev_run> from
+exiting if no event watchers registered by it are active. It is also an
+excellent way to do this for generic recurring timers or from within
+third-party libraries. Just remember to I<unref after start> and I<ref
+before stop> (but only if the watcher wasn't active before, or was active
+before, respectively. Note also that libev might stop watchers itself
+(e.g. non-repeating timers) in which case you have to C<ev_ref>
+in the callback).
+
+Example: Create a signal watcher, but keep it from keeping C<ev_run>
+running when nothing else is active.
+
+ ev_signal exitsig;
+ ev_signal_init (&exitsig, sig_cb, SIGINT);
+ ev_signal_start (loop, &exitsig);
+ ev_unref (loop);
+
+Example: For some weird reason, unregister the above signal handler again.
+
+ ev_ref (loop);
+ ev_signal_stop (loop, &exitsig);
+
+=item ev_set_io_collect_interval (loop, ev_tstamp interval)
+
+=item ev_set_timeout_collect_interval (loop, ev_tstamp interval)
+
+These advanced functions influence the time that libev will spend waiting
+for events. Both time intervals are by default C<0>, meaning that libev
+will try to invoke timer/periodic callbacks and I/O callbacks with minimum
+latency.
+
+Setting these to a higher value (the C<interval> I<must> be >= C<0>)
+allows libev to delay invocation of I/O and timer/periodic callbacks
+to increase efficiency of loop iterations (or to increase power-saving
+opportunities).
+
+The idea is that sometimes your program runs just fast enough to handle
+one (or very few) event(s) per loop iteration. While this makes the
+program responsive, it also wastes a lot of CPU time to poll for new
+events, especially with backends like C<select ()> which have a high
+overhead for the actual polling but can deliver many events at once.
+
+By setting a higher I<io collect interval> you allow libev to spend more
+time collecting I/O events, so you can handle more events per iteration,
+at the cost of increasing latency. Timeouts (both C<ev_periodic> and
+C<ev_timer>) will be not affected. Setting this to a non-null value will
+introduce an additional C<ev_sleep ()> call into most loop iterations. The
+sleep time ensures that libev will not poll for I/O events more often then
+once per this interval, on average.
+
+Likewise, by setting a higher I<timeout collect interval> you allow libev
+to spend more time collecting timeouts, at the expense of increased
+latency/jitter/inexactness (the watcher callback will be called
+later). C<ev_io> watchers will not be affected. Setting this to a non-null
+value will not introduce any overhead in libev.
+
+Many (busy) programs can usually benefit by setting the I/O collect
+interval to a value near C<0.1> or so, which is often enough for
+interactive servers (of course not for games), likewise for timeouts. It
+usually doesn't make much sense to set it to a lower value than C<0.01>,
+as this approaches the timing granularity of most systems. Note that if
+you do transactions with the outside world and you can't increase the
+parallelity, then this setting will limit your transaction rate (if you
+need to poll once per transaction and the I/O collect interval is 0.01,
+then you can't do more than 100 transactions per second).
+
+Setting the I<timeout collect interval> can improve the opportunity for
+saving power, as the program will "bundle" timer callback invocations that
+are "near" in time together, by delaying some, thus reducing the number of
+times the process sleeps and wakes up again. Another useful technique to
+reduce iterations/wake-ups is to use C<ev_periodic> watchers and make sure
+they fire on, say, one-second boundaries only.
+
+Example: we only need 0.1s timeout granularity, and we wish not to poll
+more often than 100 times per second:
+
+ ev_set_timeout_collect_interval (EV_DEFAULT_UC_ 0.1);
+ ev_set_io_collect_interval (EV_DEFAULT_UC_ 0.01);
+
+=item ev_invoke_pending (loop)
+
+This call will simply invoke all pending watchers while resetting their
+pending state. Normally, C<ev_run> does this automatically when required,
+but when overriding the invoke callback this call comes handy. This
+function can be invoked from a watcher - this can be useful for example
+when you want to do some lengthy calculation and want to pass further
+event handling to another thread (you still have to make sure only one
+thread executes within C<ev_invoke_pending> or C<ev_run> of course).
+
+=item int ev_pending_count (loop)
+
+Returns the number of pending watchers - zero indicates that no watchers
+are pending.
+
+=item ev_set_invoke_pending_cb (loop, void (*invoke_pending_cb)(EV_P))
+
+This overrides the invoke pending functionality of the loop: Instead of
+invoking all pending watchers when there are any, C<ev_run> will call
+this callback instead. This is useful, for example, when you want to
+invoke the actual watchers inside another context (another thread etc.).
+
+If you want to reset the callback, use C<ev_invoke_pending> as new
+callback.
+
+=item ev_set_loop_release_cb (loop, void (*release)(EV_P), void (*acquire)(EV_P))
+
+Sometimes you want to share the same loop between multiple threads. This
+can be done relatively simply by putting mutex_lock/unlock calls around
+each call to a libev function.
+
+However, C<ev_run> can run an indefinite time, so it is not feasible
+to wait for it to return. One way around this is to wake up the event
+loop via C<ev_break> and C<av_async_send>, another way is to set these
+I<release> and I<acquire> callbacks on the loop.
+
+When set, then C<release> will be called just before the thread is
+suspended waiting for new events, and C<acquire> is called just
+afterwards.
+
+Ideally, C<release> will just call your mutex_unlock function, and
+C<acquire> will just call the mutex_lock function again.
+
+While event loop modifications are allowed between invocations of
+C<release> and C<acquire> (that's their only purpose after all), no
+modifications done will affect the event loop, i.e. adding watchers will
+have no effect on the set of file descriptors being watched, or the time
+waited. Use an C<ev_async> watcher to wake up C<ev_run> when you want it
+to take note of any changes you made.
+
+In theory, threads executing C<ev_run> will be async-cancel safe between
+invocations of C<release> and C<acquire>.
+
+See also the locking example in the C<THREADS> section later in this
+document.
+
+=item ev_set_userdata (loop, void *data)
+
+=item void *ev_userdata (loop)
+
+Set and retrieve a single C<void *> associated with a loop. When
+C<ev_set_userdata> has never been called, then C<ev_userdata> returns
+C<0>.
+
+These two functions can be used to associate arbitrary data with a loop,
+and are intended solely for the C<invoke_pending_cb>, C<release> and
+C<acquire> callbacks described above, but of course can be (ab-)used for
+any other purpose as well.
+
+=item ev_verify (loop)
+
+This function only does something when C<EV_VERIFY> support has been
+compiled in, which is the default for non-minimal builds. It tries to go
+through all internal structures and checks them for validity. If anything
+is found to be inconsistent, it will print an error message to standard
+error and call C<abort ()>.
+
+This can be used to catch bugs inside libev itself: under normal
+circumstances, this function will never abort as of course libev keeps its
+data structures consistent.
+
+=back
+
+
+=head1 ANATOMY OF A WATCHER
+
+In the following description, uppercase C<TYPE> in names stands for the
+watcher type, e.g. C<ev_TYPE_start> can mean C<ev_timer_start> for timer
+watchers and C<ev_io_start> for I/O watchers.
+
+A watcher is an opaque structure that you allocate and register to record
+your interest in some event. To make a concrete example, imagine you want
+to wait for STDIN to become readable, you would create an C<ev_io> watcher
+for that:
+
+ static void my_cb (struct ev_loop *loop, ev_io *w, int revents)
+ {
+ ev_io_stop (w);
+ ev_break (loop, EVBREAK_ALL);
+ }
+
+ struct ev_loop *loop = ev_default_loop (0);
+
+ ev_io stdin_watcher;
+
+ ev_init (&stdin_watcher, my_cb);
+ ev_io_set (&stdin_watcher, STDIN_FILENO, EV_READ);
+ ev_io_start (loop, &stdin_watcher);
+
+ ev_run (loop, 0);
+
+As you can see, you are responsible for allocating the memory for your
+watcher structures (and it is I<usually> a bad idea to do this on the
+stack).
+
+Each watcher has an associated watcher structure (called C<struct ev_TYPE>
+or simply C<ev_TYPE>, as typedefs are provided for all watcher structs).
+
+Each watcher structure must be initialised by a call to C<ev_init (watcher
+*, callback)>, which expects a callback to be provided. This callback is
+invoked each time the event occurs (or, in the case of I/O watchers, each
+time the event loop detects that the file descriptor given is readable
+and/or writable).
+
+Each watcher type further has its own C<< ev_TYPE_set (watcher *, ...) >>
+macro to configure it, with arguments specific to the watcher type. There
+is also a macro to combine initialisation and setting in one call: C<<
+ev_TYPE_init (watcher *, callback, ...) >>.
+
+To make the watcher actually watch out for events, you have to start it
+with a watcher-specific start function (C<< ev_TYPE_start (loop, watcher
+*) >>), and you can stop watching for events at any time by calling the
+corresponding stop function (C<< ev_TYPE_stop (loop, watcher *) >>.
+
+As long as your watcher is active (has been started but not stopped) you
+must not touch the values stored in it. Most specifically you must never
+reinitialise it or call its C<ev_TYPE_set> macro.
+
+Each and every callback receives the event loop pointer as first, the
+registered watcher structure as second, and a bitset of received events as
+third argument.
+
+The received events usually include a single bit per event type received
+(you can receive multiple events at the same time). The possible bit masks
+are:
+
+=over 4
+
+=item C<EV_READ>
+
+=item C<EV_WRITE>
+
+The file descriptor in the C<ev_io> watcher has become readable and/or
+writable.
+
+=item C<EV_TIMER>
+
+The C<ev_timer> watcher has timed out.
+
+=item C<EV_PERIODIC>
+
+The C<ev_periodic> watcher has timed out.
+
+=item C<EV_SIGNAL>
+
+The signal specified in the C<ev_signal> watcher has been received by a thread.
+
+=item C<EV_CHILD>
+
+The pid specified in the C<ev_child> watcher has received a status change.
+
+=item C<EV_STAT>
+
+The path specified in the C<ev_stat> watcher changed its attributes somehow.
+
+=item C<EV_IDLE>
+
+The C<ev_idle> watcher has determined that you have nothing better to do.
+
+=item C<EV_PREPARE>
+
+=item C<EV_CHECK>
+
+All C<ev_prepare> watchers are invoked just I<before> C<ev_run> starts
+to gather new events, and all C<ev_check> watchers are invoked just after
+C<ev_run> has gathered them, but before it invokes any callbacks for any
+received events. Callbacks of both watcher types can start and stop as
+many watchers as they want, and all of them will be taken into account
+(for example, a C<ev_prepare> watcher might start an idle watcher to keep
+C<ev_run> from blocking).
+
+=item C<EV_EMBED>
+
+The embedded event loop specified in the C<ev_embed> watcher needs attention.
+
+=item C<EV_FORK>
+
+The event loop has been resumed in the child process after fork (see
+C<ev_fork>).
+
+=item C<EV_CLEANUP>
+
+The event loop is about to be destroyed (see C<ev_cleanup>).
+
+=item C<EV_ASYNC>
+
+The given async watcher has been asynchronously notified (see C<ev_async>).
+
+=item C<EV_CUSTOM>
+
+Not ever sent (or otherwise used) by libev itself, but can be freely used
+by libev users to signal watchers (e.g. via C<ev_feed_event>).
+
+=item C<EV_ERROR>
+
+An unspecified error has occurred, the watcher has been stopped. This might
+happen because the watcher could not be properly started because libev
+ran out of memory, a file descriptor was found to be closed or any other
+problem. Libev considers these application bugs.
+
+You best act on it by reporting the problem and somehow coping with the
+watcher being stopped. Note that well-written programs should not receive
+an error ever, so when your watcher receives it, this usually indicates a
+bug in your program.
+
+Libev will usually signal a few "dummy" events together with an error, for
+example it might indicate that a fd is readable or writable, and if your
+callbacks is well-written it can just attempt the operation and cope with
+the error from read() or write(). This will not work in multi-threaded
+programs, though, as the fd could already be closed and reused for another
+thing, so beware.
+
+=back
+
+=head2 GENERIC WATCHER FUNCTIONS
+
+=over 4
+
+=item C<ev_init> (ev_TYPE *watcher, callback)
+
+This macro initialises the generic portion of a watcher. The contents
+of the watcher object can be arbitrary (so C<malloc> will do). Only
+the generic parts of the watcher are initialised, you I<need> to call
+the type-specific C<ev_TYPE_set> macro afterwards to initialise the
+type-specific parts. For each type there is also a C<ev_TYPE_init> macro
+which rolls both calls into one.
+
+You can reinitialise a watcher at any time as long as it has been stopped
+(or never started) and there are no pending events outstanding.
+
+The callback is always of type C<void (*)(struct ev_loop *loop, ev_TYPE *watcher,
+int revents)>.
+
+Example: Initialise an C<ev_io> watcher in two steps.
+
+ ev_io w;
+ ev_init (&w, my_cb);
+ ev_io_set (&w, STDIN_FILENO, EV_READ);
+
+=item C<ev_TYPE_set> (ev_TYPE *watcher, [args])
+
+This macro initialises the type-specific parts of a watcher. You need to
+call C<ev_init> at least once before you call this macro, but you can
+call C<ev_TYPE_set> any number of times. You must not, however, call this
+macro on a watcher that is active (it can be pending, however, which is a
+difference to the C<ev_init> macro).
+
+Although some watcher types do not have type-specific arguments
+(e.g. C<ev_prepare>) you still need to call its C<set> macro.
+
+See C<ev_init>, above, for an example.
+
+=item C<ev_TYPE_init> (ev_TYPE *watcher, callback, [args])
+
+This convenience macro rolls both C<ev_init> and C<ev_TYPE_set> macro
+calls into a single call. This is the most convenient method to initialise
+a watcher. The same limitations apply, of course.
+
+Example: Initialise and set an C<ev_io> watcher in one step.
+
+ ev_io_init (&w, my_cb, STDIN_FILENO, EV_READ);
+
+=item C<ev_TYPE_start> (loop, ev_TYPE *watcher)
+
+Starts (activates) the given watcher. Only active watchers will receive
+events. If the watcher is already active nothing will happen.
+
+Example: Start the C<ev_io> watcher that is being abused as example in this
+whole section.
+
+ ev_io_start (EV_DEFAULT_UC, &w);
+
+=item C<ev_TYPE_stop> (loop, ev_TYPE *watcher)
+
+Stops the given watcher if active, and clears the pending status (whether
+the watcher was active or not).
+
+It is possible that stopped watchers are pending - for example,
+non-repeating timers are being stopped when they become pending - but
+calling C<ev_TYPE_stop> ensures that the watcher is neither active nor
+pending. If you want to free or reuse the memory used by the watcher it is
+therefore a good idea to always call its C<ev_TYPE_stop> function.
+
+=item bool ev_is_active (ev_TYPE *watcher)
+
+Returns a true value iff the watcher is active (i.e. it has been started
+and not yet been stopped). As long as a watcher is active you must not modify
+it.
+
+=item bool ev_is_pending (ev_TYPE *watcher)
+
+Returns a true value iff the watcher is pending, (i.e. it has outstanding
+events but its callback has not yet been invoked). As long as a watcher
+is pending (but not active) you must not call an init function on it (but
+C<ev_TYPE_set> is safe), you must not change its priority, and you must
+make sure the watcher is available to libev (e.g. you cannot C<free ()>
+it).
+
+=item callback ev_cb (ev_TYPE *watcher)
+
+Returns the callback currently set on the watcher.
+
+=item ev_cb_set (ev_TYPE *watcher, callback)
+
+Change the callback. You can change the callback at virtually any time
+(modulo threads).
+
+=item ev_set_priority (ev_TYPE *watcher, int priority)
+
+=item int ev_priority (ev_TYPE *watcher)
+
+Set and query the priority of the watcher. The priority is a small
+integer between C<EV_MAXPRI> (default: C<2>) and C<EV_MINPRI>
+(default: C<-2>). Pending watchers with higher priority will be invoked
+before watchers with lower priority, but priority will not keep watchers
+from being executed (except for C<ev_idle> watchers).
+
+If you need to suppress invocation when higher priority events are pending
+you need to look at C<ev_idle> watchers, which provide this functionality.
+
+You I<must not> change the priority of a watcher as long as it is active or
+pending.
+
+Setting a priority outside the range of C<EV_MINPRI> to C<EV_MAXPRI> is
+fine, as long as you do not mind that the priority value you query might
+or might not have been clamped to the valid range.
+
+The default priority used by watchers when no priority has been set is
+always C<0>, which is supposed to not be too high and not be too low :).
+
+See L<WATCHER PRIORITY MODELS>, below, for a more thorough treatment of
+priorities.
+
+=item ev_invoke (loop, ev_TYPE *watcher, int revents)
+
+Invoke the C<watcher> with the given C<loop> and C<revents>. Neither
+C<loop> nor C<revents> need to be valid as long as the watcher callback
+can deal with that fact, as both are simply passed through to the
+callback.
+
+=item int ev_clear_pending (loop, ev_TYPE *watcher)
+
+If the watcher is pending, this function clears its pending status and
+returns its C<revents> bitset (as if its callback was invoked). If the
+watcher isn't pending it does nothing and returns C<0>.
+
+Sometimes it can be useful to "poll" a watcher instead of waiting for its
+callback to be invoked, which can be accomplished with this function.
+
+=item ev_feed_event (loop, ev_TYPE *watcher, int revents)
+
+Feeds the given event set into the event loop, as if the specified event
+had happened for the specified watcher (which must be a pointer to an
+initialised but not necessarily started event watcher). Obviously you must
+not free the watcher as long as it has pending events.
+
+Stopping the watcher, letting libev invoke it, or calling
+C<ev_clear_pending> will clear the pending event, even if the watcher was
+not started in the first place.
+
+See also C<ev_feed_fd_event> and C<ev_feed_signal_event> for related
+functions that do not need a watcher.
+
+=back
+
+See also the L<ASSOCIATING CUSTOM DATA WITH A WATCHER> and L<BUILDING YOUR
+OWN COMPOSITE WATCHERS> idioms.
+
+=head2 WATCHER STATES
+
+There are various watcher states mentioned throughout this manual -
+active, pending and so on. In this section these states and the rules to
+transition between them will be described in more detail - and while these
+rules might look complicated, they usually do "the right thing".
+
+=over 4
+
+=item initialiased
+
+Before a watcher can be registered with the event looop it has to be
+initialised. This can be done with a call to C<ev_TYPE_init>, or calls to
+C<ev_init> followed by the watcher-specific C<ev_TYPE_set> function.
+
+In this state it is simply some block of memory that is suitable for
+use in an event loop. It can be moved around, freed, reused etc. at
+will - as long as you either keep the memory contents intact, or call
+C<ev_TYPE_init> again.
+
+=item started/running/active
+
+Once a watcher has been started with a call to C<ev_TYPE_start> it becomes
+property of the event loop, and is actively waiting for events. While in
+this state it cannot be accessed (except in a few documented ways), moved,
+freed or anything else - the only legal thing is to keep a pointer to it,
+and call libev functions on it that are documented to work on active watchers.
+
+=item pending
+
+If a watcher is active and libev determines that an event it is interested
+in has occurred (such as a timer expiring), it will become pending. It will
+stay in this pending state until either it is stopped or its callback is
+about to be invoked, so it is not normally pending inside the watcher
+callback.
+
+The watcher might or might not be active while it is pending (for example,
+an expired non-repeating timer can be pending but no longer active). If it
+is stopped, it can be freely accessed (e.g. by calling C<ev_TYPE_set>),
+but it is still property of the event loop at this time, so cannot be
+moved, freed or reused. And if it is active the rules described in the
+previous item still apply.
+
+It is also possible to feed an event on a watcher that is not active (e.g.
+via C<ev_feed_event>), in which case it becomes pending without being
+active.
+
+=item stopped
+
+A watcher can be stopped implicitly by libev (in which case it might still
+be pending), or explicitly by calling its C<ev_TYPE_stop> function. The
+latter will clear any pending state the watcher might be in, regardless
+of whether it was active or not, so stopping a watcher explicitly before
+freeing it is often a good idea.
+
+While stopped (and not pending) the watcher is essentially in the
+initialised state, that is, it can be reused, moved, modified in any way
+you wish (but when you trash the memory block, you need to C<ev_TYPE_init>
+it again).
+
+=back
+
+=head2 WATCHER PRIORITY MODELS
+
+Many event loops support I<watcher priorities>, which are usually small
+integers that influence the ordering of event callback invocation
+between watchers in some way, all else being equal.
+
+In libev, Watcher priorities can be set using C<ev_set_priority>. See its
+description for the more technical details such as the actual priority
+range.
+
+There are two common ways how these these priorities are being interpreted
+by event loops:
+
+In the more common lock-out model, higher priorities "lock out" invocation
+of lower priority watchers, which means as long as higher priority
+watchers receive events, lower priority watchers are not being invoked.
+
+The less common only-for-ordering model uses priorities solely to order
+callback invocation within a single event loop iteration: Higher priority
+watchers are invoked before lower priority ones, but they all get invoked
+before polling for new events.
+
+Libev uses the second (only-for-ordering) model for all its watchers
+except for idle watchers (which use the lock-out model).
+
+The rationale behind this is that implementing the lock-out model for
+watchers is not well supported by most kernel interfaces, and most event
+libraries will just poll for the same events again and again as long as
+their callbacks have not been executed, which is very inefficient in the
+common case of one high-priority watcher locking out a mass of lower
+priority ones.
+
+Static (ordering) priorities are most useful when you have two or more
+watchers handling the same resource: a typical usage example is having an
+C<ev_io> watcher to receive data, and an associated C<ev_timer> to handle
+timeouts. Under load, data might be received while the program handles
+other jobs, but since timers normally get invoked first, the timeout
+handler will be executed before checking for data. In that case, giving
+the timer a lower priority than the I/O watcher ensures that I/O will be
+handled first even under adverse conditions (which is usually, but not
+always, what you want).
+
+Since idle watchers use the "lock-out" model, meaning that idle watchers
+will only be executed when no same or higher priority watchers have
+received events, they can be used to implement the "lock-out" model when
+required.
+
+For example, to emulate how many other event libraries handle priorities,
+you can associate an C<ev_idle> watcher to each such watcher, and in
+the normal watcher callback, you just start the idle watcher. The real
+processing is done in the idle watcher callback. This causes libev to
+continuously poll and process kernel event data for the watcher, but when
+the lock-out case is known to be rare (which in turn is rare :), this is
+workable.
+
+Usually, however, the lock-out model implemented that way will perform
+miserably under the type of load it was designed to handle. In that case,
+it might be preferable to stop the real watcher before starting the
+idle watcher, so the kernel will not have to process the event in case
+the actual processing will be delayed for considerable time.
+
+Here is an example of an I/O watcher that should run at a strictly lower
+priority than the default, and which should only process data when no
+other events are pending:
+
+ ev_idle idle; // actual processing watcher
+ ev_io io; // actual event watcher
+
+ static void
+ io_cb (EV_P_ ev_io *w, int revents)
+ {
+ // stop the I/O watcher, we received the event, but
+ // are not yet ready to handle it.
+ ev_io_stop (EV_A_ w);
+
+ // start the idle watcher to handle the actual event.
+ // it will not be executed as long as other watchers
+ // with the default priority are receiving events.
+ ev_idle_start (EV_A_ &idle);
+ }
+
+ static void
+ idle_cb (EV_P_ ev_idle *w, int revents)
+ {
+ // actual processing
+ read (STDIN_FILENO, ...);
+
+ // have to start the I/O watcher again, as
+ // we have handled the event
+ ev_io_start (EV_P_ &io);
+ }
+
+ // initialisation
+ ev_idle_init (&idle, idle_cb);
+ ev_io_init (&io, io_cb, STDIN_FILENO, EV_READ);
+ ev_io_start (EV_DEFAULT_ &io);
+
+In the "real" world, it might also be beneficial to start a timer, so that
+low-priority connections can not be locked out forever under load. This
+enables your program to keep a lower latency for important connections
+during short periods of high load, while not completely locking out less
+important ones.
+
+
+=head1 WATCHER TYPES
+
+This section describes each watcher in detail, but will not repeat
+information given in the last section. Any initialisation/set macros,
+functions and members specific to the watcher type are explained.
+
+Members are additionally marked with either I<[read-only]>, meaning that,
+while the watcher is active, you can look at the member and expect some
+sensible content, but you must not modify it (you can modify it while the
+watcher is stopped to your hearts content), or I<[read-write]>, which
+means you can expect it to have some sensible content while the watcher
+is active, but you can also modify it. Modifying it may not do something
+sensible or take immediate effect (or do anything at all), but libev will
+not crash or malfunction in any way.
+
+
+=head2 C<ev_io> - is this file descriptor readable or writable?
+
+I/O watchers check whether a file descriptor is readable or writable
+in each iteration of the event loop, or, more precisely, when reading
+would not block the process and writing would at least be able to write
+some data. This behaviour is called level-triggering because you keep
+receiving events as long as the condition persists. Remember you can stop
+the watcher if you don't want to act on the event and neither want to
+receive future events.
+
+In general you can register as many read and/or write event watchers per
+fd as you want (as long as you don't confuse yourself). Setting all file
+descriptors to non-blocking mode is also usually a good idea (but not
+required if you know what you are doing).
+
+Another thing you have to watch out for is that it is quite easy to
+receive "spurious" readiness notifications, that is, your callback might
+be called with C<EV_READ> but a subsequent C<read>(2) will actually block
+because there is no data. It is very easy to get into this situation even
+with a relatively standard program structure. Thus it is best to always
+use non-blocking I/O: An extra C<read>(2) returning C<EAGAIN> is far
+preferable to a program hanging until some data arrives.
+
+If you cannot run the fd in non-blocking mode (for example you should
+not play around with an Xlib connection), then you have to separately
+re-test whether a file descriptor is really ready with a known-to-be good
+interface such as poll (fortunately in the case of Xlib, it already does
+this on its own, so its quite safe to use). Some people additionally
+use C<SIGALRM> and an interval timer, just to be sure you won't block
+indefinitely.
+
+But really, best use non-blocking mode.
+
+=head3 The special problem of disappearing file descriptors
+
+Some backends (e.g. kqueue, epoll) need to be told about closing a file
+descriptor (either due to calling C<close> explicitly or any other means,
+such as C<dup2>). The reason is that you register interest in some file
+descriptor, but when it goes away, the operating system will silently drop
+this interest. If another file descriptor with the same number then is
+registered with libev, there is no efficient way to see that this is, in
+fact, a different file descriptor.
+
+To avoid having to explicitly tell libev about such cases, libev follows
+the following policy: Each time C<ev_io_set> is being called, libev
+will assume that this is potentially a new file descriptor, otherwise
+it is assumed that the file descriptor stays the same. That means that
+you I<have> to call C<ev_io_set> (or C<ev_io_init>) when you change the
+descriptor even if the file descriptor number itself did not change.
+
+This is how one would do it normally anyway, the important point is that
+the libev application should not optimise around libev but should leave
+optimisations to libev.
+
+=head3 The special problem of dup'ed file descriptors
+
+Some backends (e.g. epoll), cannot register events for file descriptors,
+but only events for the underlying file descriptions. That means when you
+have C<dup ()>'ed file descriptors or weirder constellations, and register
+events for them, only one file descriptor might actually receive events.
+
+There is no workaround possible except not registering events
+for potentially C<dup ()>'ed file descriptors, or to resort to
+C<EVBACKEND_SELECT> or C<EVBACKEND_POLL>.
+
+=head3 The special problem of files
+
+Many people try to use C<select> (or libev) on file descriptors
+representing files, and expect it to become ready when their program
+doesn't block on disk accesses (which can take a long time on their own).
+
+However, this cannot ever work in the "expected" way - you get a readiness
+notification as soon as the kernel knows whether and how much data is
+there, and in the case of open files, that's always the case, so you
+always get a readiness notification instantly, and your read (or possibly
+write) will still block on the disk I/O.
+
+Another way to view it is that in the case of sockets, pipes, character
+devices and so on, there is another party (the sender) that delivers data
+on its own, but in the case of files, there is no such thing: the disk
+will not send data on its own, simply because it doesn't know what you
+wish to read - you would first have to request some data.
+
+Since files are typically not-so-well supported by advanced notification
+mechanism, libev tries hard to emulate POSIX behaviour with respect
+to files, even though you should not use it. The reason for this is
+convenience: sometimes you want to watch STDIN or STDOUT, which is
+usually a tty, often a pipe, but also sometimes files or special devices
+(for example, C<epoll> on Linux works with F</dev/random> but not with
+F</dev/urandom>), and even though the file might better be served with
+asynchronous I/O instead of with non-blocking I/O, it is still useful when
+it "just works" instead of freezing.
+
+So avoid file descriptors pointing to files when you know it (e.g. use
+libeio), but use them when it is convenient, e.g. for STDIN/STDOUT, or
+when you rarely read from a file instead of from a socket, and want to
+reuse the same code path.
+
+=head3 The special problem of fork
+
+Some backends (epoll, kqueue) do not support C<fork ()> at all or exhibit
+useless behaviour. Libev fully supports fork, but needs to be told about
+it in the child if you want to continue to use it in the child.
+
+To support fork in your child processes, you have to call C<ev_loop_fork
+()> after a fork in the child, enable C<EVFLAG_FORKCHECK>, or resort to
+C<EVBACKEND_SELECT> or C<EVBACKEND_POLL>.
+
+=head3 The special problem of SIGPIPE
+
+While not really specific to libev, it is easy to forget about C<SIGPIPE>:
+when writing to a pipe whose other end has been closed, your program gets
+sent a SIGPIPE, which, by default, aborts your program. For most programs
+this is sensible behaviour, for daemons, this is usually undesirable.
+
+So when you encounter spurious, unexplained daemon exits, make sure you
+ignore SIGPIPE (and maybe make sure you log the exit status of your daemon
+somewhere, as that would have given you a big clue).
+
+=head3 The special problem of accept()ing when you can't
+
+Many implementations of the POSIX C<accept> function (for example,
+found in post-2004 Linux) have the peculiar behaviour of not removing a
+connection from the pending queue in all error cases.
+
+For example, larger servers often run out of file descriptors (because
+of resource limits), causing C<accept> to fail with C<ENFILE> but not
+rejecting the connection, leading to libev signalling readiness on
+the next iteration again (the connection still exists after all), and
+typically causing the program to loop at 100% CPU usage.
+
+Unfortunately, the set of errors that cause this issue differs between
+operating systems, there is usually little the app can do to remedy the
+situation, and no known thread-safe method of removing the connection to
+cope with overload is known (to me).
+
+One of the easiest ways to handle this situation is to just ignore it
+- when the program encounters an overload, it will just loop until the
+situation is over. While this is a form of busy waiting, no OS offers an
+event-based way to handle this situation, so it's the best one can do.
+
+A better way to handle the situation is to log any errors other than
+C<EAGAIN> and C<EWOULDBLOCK>, making sure not to flood the log with such
+messages, and continue as usual, which at least gives the user an idea of
+what could be wrong ("raise the ulimit!"). For extra points one could stop
+the C<ev_io> watcher on the listening fd "for a while", which reduces CPU
+usage.
+
+If your program is single-threaded, then you could also keep a dummy file
+descriptor for overload situations (e.g. by opening F</dev/null>), and
+when you run into C<ENFILE> or C<EMFILE>, close it, run C<accept>,
+close that fd, and create a new dummy fd. This will gracefully refuse
+clients under typical overload conditions.
+
+The last way to handle it is to simply log the error and C<exit>, as
+is often done with C<malloc> failures, but this results in an easy
+opportunity for a DoS attack.
+
+=head3 Watcher-Specific Functions
+
+=over 4
+
+=item ev_io_init (ev_io *, callback, int fd, int events)
+
+=item ev_io_set (ev_io *, int fd, int events)
+
+Configures an C<ev_io> watcher. The C<fd> is the file descriptor to
+receive events for and C<events> is either C<EV_READ>, C<EV_WRITE> or
+C<EV_READ | EV_WRITE>, to express the desire to receive the given events.
+
+=item int fd [read-only]
+
+The file descriptor being watched.
+
+=item int events [read-only]
+
+The events being watched.
+
+=back
+
+=head3 Examples
+
+Example: Call C<stdin_readable_cb> when STDIN_FILENO has become, well
+readable, but only once. Since it is likely line-buffered, you could
+attempt to read a whole line in the callback.
+
+ static void
+ stdin_readable_cb (struct ev_loop *loop, ev_io *w, int revents)
+ {
+ ev_io_stop (loop, w);
+ .. read from stdin here (or from w->fd) and handle any I/O errors
+ }
+
+ ...
+ struct ev_loop *loop = ev_default_init (0);
+ ev_io stdin_readable;
+ ev_io_init (&stdin_readable, stdin_readable_cb, STDIN_FILENO, EV_READ);
+ ev_io_start (loop, &stdin_readable);
+ ev_run (loop, 0);
+
+
+=head2 C<ev_timer> - relative and optionally repeating timeouts
+
+Timer watchers are simple relative timers that generate an event after a
+given time, and optionally repeating in regular intervals after that.
+
+The timers are based on real time, that is, if you register an event that
+times out after an hour and you reset your system clock to January last
+year, it will still time out after (roughly) one hour. "Roughly" because
+detecting time jumps is hard, and some inaccuracies are unavoidable (the
+monotonic clock option helps a lot here).
+
+The callback is guaranteed to be invoked only I<after> its timeout has
+passed (not I<at>, so on systems with very low-resolution clocks this
+might introduce a small delay). If multiple timers become ready during the
+same loop iteration then the ones with earlier time-out values are invoked
+before ones of the same priority with later time-out values (but this is
+no longer true when a callback calls C<ev_run> recursively).
+
+=head3 Be smart about timeouts
+
+Many real-world problems involve some kind of timeout, usually for error
+recovery. A typical example is an HTTP request - if the other side hangs,
+you want to raise some error after a while.
+
+What follows are some ways to handle this problem, from obvious and
+inefficient to smart and efficient.
+
+In the following, a 60 second activity timeout is assumed - a timeout that
+gets reset to 60 seconds each time there is activity (e.g. each time some
+data or other life sign was received).
+
+=over 4
+
+=item 1. Use a timer and stop, reinitialise and start it on activity.
+
+This is the most obvious, but not the most simple way: In the beginning,
+start the watcher:
+
+ ev_timer_init (timer, callback, 60., 0.);
+ ev_timer_start (loop, timer);
+
+Then, each time there is some activity, C<ev_timer_stop> it, initialise it
+and start it again:
+
+ ev_timer_stop (loop, timer);
+ ev_timer_set (timer, 60., 0.);
+ ev_timer_start (loop, timer);
+
+This is relatively simple to implement, but means that each time there is
+some activity, libev will first have to remove the timer from its internal
+data structure and then add it again. Libev tries to be fast, but it's
+still not a constant-time operation.
+
+=item 2. Use a timer and re-start it with C<ev_timer_again> inactivity.
+
+This is the easiest way, and involves using C<ev_timer_again> instead of
+C<ev_timer_start>.
+
+To implement this, configure an C<ev_timer> with a C<repeat> value
+of C<60> and then call C<ev_timer_again> at start and each time you
+successfully read or write some data. If you go into an idle state where
+you do not expect data to travel on the socket, you can C<ev_timer_stop>
+the timer, and C<ev_timer_again> will automatically restart it if need be.
+
+That means you can ignore both the C<ev_timer_start> function and the
+C<after> argument to C<ev_timer_set>, and only ever use the C<repeat>
+member and C<ev_timer_again>.
+
+At start:
+
+ ev_init (timer, callback);
+ timer->repeat = 60.;
+ ev_timer_again (loop, timer);
+
+Each time there is some activity:
+
+ ev_timer_again (loop, timer);
+
+It is even possible to change the time-out on the fly, regardless of
+whether the watcher is active or not:
+
+ timer->repeat = 30.;
+ ev_timer_again (loop, timer);
+
+This is slightly more efficient then stopping/starting the timer each time
+you want to modify its timeout value, as libev does not have to completely
+remove and re-insert the timer from/into its internal data structure.
+
+It is, however, even simpler than the "obvious" way to do it.
+
+=item 3. Let the timer time out, but then re-arm it as required.
+
+This method is more tricky, but usually most efficient: Most timeouts are
+relatively long compared to the intervals between other activity - in
+our example, within 60 seconds, there are usually many I/O events with
+associated activity resets.
+
+In this case, it would be more efficient to leave the C<ev_timer> alone,
+but remember the time of last activity, and check for a real timeout only
+within the callback:
+
+ ev_tstamp last_activity; // time of last activity
+
+ static void
+ callback (EV_P_ ev_timer *w, int revents)
+ {
+ ev_tstamp now = ev_now (EV_A);
+ ev_tstamp timeout = last_activity + 60.;
+
+ // if last_activity + 60. is older than now, we did time out
+ if (timeout < now)
+ {
+ // timeout occurred, take action
+ }
+ else
+ {
+ // callback was invoked, but there was some activity, re-arm
+ // the watcher to fire in last_activity + 60, which is
+ // guaranteed to be in the future, so "again" is positive:
+ w->repeat = timeout - now;
+ ev_timer_again (EV_A_ w);
+ }
+ }
+
+To summarise the callback: first calculate the real timeout (defined
+as "60 seconds after the last activity"), then check if that time has
+been reached, which means something I<did>, in fact, time out. Otherwise
+the callback was invoked too early (C<timeout> is in the future), so
+re-schedule the timer to fire at that future time, to see if maybe we have
+a timeout then.
+
+Note how C<ev_timer_again> is used, taking advantage of the
+C<ev_timer_again> optimisation when the timer is already running.
+
+This scheme causes more callback invocations (about one every 60 seconds
+minus half the average time between activity), but virtually no calls to
+libev to change the timeout.
+
+To start the timer, simply initialise the watcher and set C<last_activity>
+to the current time (meaning we just have some activity :), then call the
+callback, which will "do the right thing" and start the timer:
+
+ ev_init (timer, callback);
+ last_activity = ev_now (loop);
+ callback (loop, timer, EV_TIMER);
+
+And when there is some activity, simply store the current time in
+C<last_activity>, no libev calls at all:
+
+ last_activity = ev_now (loop);
+
+This technique is slightly more complex, but in most cases where the
+time-out is unlikely to be triggered, much more efficient.
+
+Changing the timeout is trivial as well (if it isn't hard-coded in the
+callback :) - just change the timeout and invoke the callback, which will
+fix things for you.
+
+=item 4. Wee, just use a double-linked list for your timeouts.
+
+If there is not one request, but many thousands (millions...), all
+employing some kind of timeout with the same timeout value, then one can
+do even better:
+
+When starting the timeout, calculate the timeout value and put the timeout
+at the I<end> of the list.
+
+Then use an C<ev_timer> to fire when the timeout at the I<beginning> of
+the list is expected to fire (for example, using the technique #3).
+
+When there is some activity, remove the timer from the list, recalculate
+the timeout, append it to the end of the list again, and make sure to
+update the C<ev_timer> if it was taken from the beginning of the list.
+
+This way, one can manage an unlimited number of timeouts in O(1) time for
+starting, stopping and updating the timers, at the expense of a major
+complication, and having to use a constant timeout. The constant timeout
+ensures that the list stays sorted.
+
+=back
+
+So which method the best?
+
+Method #2 is a simple no-brain-required solution that is adequate in most
+situations. Method #3 requires a bit more thinking, but handles many cases
+better, and isn't very complicated either. In most case, choosing either
+one is fine, with #3 being better in typical situations.
+
+Method #1 is almost always a bad idea, and buys you nothing. Method #4 is
+rather complicated, but extremely efficient, something that really pays
+off after the first million or so of active timers, i.e. it's usually
+overkill :)
+
+=head3 The special problem of time updates
+
+Establishing the current time is a costly operation (it usually takes at
+least two system calls): EV therefore updates its idea of the current
+time only before and after C<ev_run> collects new events, which causes a
+growing difference between C<ev_now ()> and C<ev_time ()> when handling
+lots of events in one iteration.
+
+The relative timeouts are calculated relative to the C<ev_now ()>
+time. This is usually the right thing as this timestamp refers to the time
+of the event triggering whatever timeout you are modifying/starting. If
+you suspect event processing to be delayed and you I<need> to base the
+timeout on the current time, use something like this to adjust for this:
+
+ ev_timer_set (&timer, after + ev_now () - ev_time (), 0.);
+
+If the event loop is suspended for a long time, you can also force an
+update of the time returned by C<ev_now ()> by calling C<ev_now_update
+()>.
+
+=head3 The special problems of suspended animation
+
+When you leave the server world it is quite customary to hit machines that
+can suspend/hibernate - what happens to the clocks during such a suspend?
+
+Some quick tests made with a Linux 2.6.28 indicate that a suspend freezes
+all processes, while the clocks (C<times>, C<CLOCK_MONOTONIC>) continue
+to run until the system is suspended, but they will not advance while the
+system is suspended. That means, on resume, it will be as if the program
+was frozen for a few seconds, but the suspend time will not be counted
+towards C<ev_timer> when a monotonic clock source is used. The real time
+clock advanced as expected, but if it is used as sole clocksource, then a
+long suspend would be detected as a time jump by libev, and timers would
+be adjusted accordingly.
+
+I would not be surprised to see different behaviour in different between
+operating systems, OS versions or even different hardware.
+
+The other form of suspend (job control, or sending a SIGSTOP) will see a
+time jump in the monotonic clocks and the realtime clock. If the program
+is suspended for a very long time, and monotonic clock sources are in use,
+then you can expect C<ev_timer>s to expire as the full suspension time
+will be counted towards the timers. When no monotonic clock source is in
+use, then libev will again assume a timejump and adjust accordingly.
+
+It might be beneficial for this latter case to call C<ev_suspend>
+and C<ev_resume> in code that handles C<SIGTSTP>, to at least get
+deterministic behaviour in this case (you can do nothing against
+C<SIGSTOP>).
+
+=head3 Watcher-Specific Functions and Data Members
+
+=over 4
+
+=item ev_timer_init (ev_timer *, callback, ev_tstamp after, ev_tstamp repeat)
+
+=item ev_timer_set (ev_timer *, ev_tstamp after, ev_tstamp repeat)
+
+Configure the timer to trigger after C<after> seconds. If C<repeat>
+is C<0.>, then it will automatically be stopped once the timeout is
+reached. If it is positive, then the timer will automatically be
+configured to trigger again C<repeat> seconds later, again, and again,
+until stopped manually.
+
+The timer itself will do a best-effort at avoiding drift, that is, if
+you configure a timer to trigger every 10 seconds, then it will normally
+trigger at exactly 10 second intervals. If, however, your program cannot
+keep up with the timer (because it takes longer than those 10 seconds to
+do stuff) the timer will not fire more than once per event loop iteration.
+
+=item ev_timer_again (loop, ev_timer *)
+
+This will act as if the timer timed out and restart it again if it is
+repeating. The exact semantics are:
+
+If the timer is pending, its pending status is cleared.
+
+If the timer is started but non-repeating, stop it (as if it timed out).
+
+If the timer is repeating, either start it if necessary (with the
+C<repeat> value), or reset the running timer to the C<repeat> value.
+
+This sounds a bit complicated, see L<Be smart about timeouts>, above, for a
+usage example.
+
+=item ev_tstamp ev_timer_remaining (loop, ev_timer *)
+
+Returns the remaining time until a timer fires. If the timer is active,
+then this time is relative to the current event loop time, otherwise it's
+the timeout value currently configured.
+
+That is, after an C<ev_timer_set (w, 5, 7)>, C<ev_timer_remaining> returns
+C<5>. When the timer is started and one second passes, C<ev_timer_remaining>
+will return C<4>. When the timer expires and is restarted, it will return
+roughly C<7> (likely slightly less as callback invocation takes some time,
+too), and so on.
+
+=item ev_tstamp repeat [read-write]
+
+The current C<repeat> value. Will be used each time the watcher times out
+or C<ev_timer_again> is called, and determines the next timeout (if any),
+which is also when any modifications are taken into account.
+
+=back
+
+=head3 Examples
+
+Example: Create a timer that fires after 60 seconds.
+
+ static void
+ one_minute_cb (struct ev_loop *loop, ev_timer *w, int revents)
+ {
+ .. one minute over, w is actually stopped right here
+ }
+
+ ev_timer mytimer;
+ ev_timer_init (&mytimer, one_minute_cb, 60., 0.);
+ ev_timer_start (loop, &mytimer);
+
+Example: Create a timeout timer that times out after 10 seconds of
+inactivity.
+
+ static void
+ timeout_cb (struct ev_loop *loop, ev_timer *w, int revents)
+ {
+ .. ten seconds without any activity
+ }
+
+ ev_timer mytimer;
+ ev_timer_init (&mytimer, timeout_cb, 0., 10.); /* note, only repeat used */
+ ev_timer_again (&mytimer); /* start timer */
+ ev_run (loop, 0);
+
+ // and in some piece of code that gets executed on any "activity":
+ // reset the timeout to start ticking again at 10 seconds
+ ev_timer_again (&mytimer);
+
+
+=head2 C<ev_periodic> - to cron or not to cron?
+
+Periodic watchers are also timers of a kind, but they are very versatile
+(and unfortunately a bit complex).
+
+Unlike C<ev_timer>, periodic watchers are not based on real time (or
+relative time, the physical time that passes) but on wall clock time
+(absolute time, the thing you can read on your calender or clock). The
+difference is that wall clock time can run faster or slower than real
+time, and time jumps are not uncommon (e.g. when you adjust your
+wrist-watch).
+
+You can tell a periodic watcher to trigger after some specific point
+in time: for example, if you tell a periodic watcher to trigger "in 10
+seconds" (by specifying e.g. C<ev_now () + 10.>, that is, an absolute time
+not a delay) and then reset your system clock to January of the previous
+year, then it will take a year or more to trigger the event (unlike an
+C<ev_timer>, which would still trigger roughly 10 seconds after starting
+it, as it uses a relative timeout).
+
+C<ev_periodic> watchers can also be used to implement vastly more complex
+timers, such as triggering an event on each "midnight, local time", or
+other complicated rules. This cannot be done with C<ev_timer> watchers, as
+those cannot react to time jumps.
+
+As with timers, the callback is guaranteed to be invoked only when the
+point in time where it is supposed to trigger has passed. If multiple
+timers become ready during the same loop iteration then the ones with
+earlier time-out values are invoked before ones with later time-out values
+(but this is no longer true when a callback calls C<ev_run> recursively).
+
+=head3 Watcher-Specific Functions and Data Members
+
+=over 4
+
+=item ev_periodic_init (ev_periodic *, callback, ev_tstamp offset, ev_tstamp interval, reschedule_cb)
+
+=item ev_periodic_set (ev_periodic *, ev_tstamp offset, ev_tstamp interval, reschedule_cb)
+
+Lots of arguments, let's sort it out... There are basically three modes of
+operation, and we will explain them from simplest to most complex:
+
+=over 4
+
+=item * absolute timer (offset = absolute time, interval = 0, reschedule_cb = 0)
+
+In this configuration the watcher triggers an event after the wall clock
+time C<offset> has passed. It will not repeat and will not adjust when a
+time jump occurs, that is, if it is to be run at January 1st 2011 then it
+will be stopped and invoked when the system clock reaches or surpasses
+this point in time.
+
+=item * repeating interval timer (offset = offset within interval, interval > 0, reschedule_cb = 0)
+
+In this mode the watcher will always be scheduled to time out at the next
+C<offset + N * interval> time (for some integer N, which can also be
+negative) and then repeat, regardless of any time jumps. The C<offset>
+argument is merely an offset into the C<interval> periods.
+
+This can be used to create timers that do not drift with respect to the
+system clock, for example, here is an C<ev_periodic> that triggers each
+hour, on the hour (with respect to UTC):
+
+ ev_periodic_set (&periodic, 0., 3600., 0);
+
+This doesn't mean there will always be 3600 seconds in between triggers,
+but only that the callback will be called when the system time shows a
+full hour (UTC), or more correctly, when the system time is evenly divisible
+by 3600.
+
+Another way to think about it (for the mathematically inclined) is that
+C<ev_periodic> will try to run the callback in this mode at the next possible
+time where C<time = offset (mod interval)>, regardless of any time jumps.
+
+For numerical stability it is preferable that the C<offset> value is near
+C<ev_now ()> (the current time), but there is no range requirement for
+this value, and in fact is often specified as zero.
+
+Note also that there is an upper limit to how often a timer can fire (CPU
+speed for example), so if C<interval> is very small then timing stability
+will of course deteriorate. Libev itself tries to be exact to be about one
+millisecond (if the OS supports it and the machine is fast enough).
+
+=item * manual reschedule mode (offset ignored, interval ignored, reschedule_cb = callback)
+
+In this mode the values for C<interval> and C<offset> are both being
+ignored. Instead, each time the periodic watcher gets scheduled, the
+reschedule callback will be called with the watcher as first, and the
+current time as second argument.
+
+NOTE: I<This callback MUST NOT stop or destroy any periodic watcher, ever,
+or make ANY other event loop modifications whatsoever, unless explicitly
+allowed by documentation here>.
+
+If you need to stop it, return C<now + 1e30> (or so, fudge fudge) and stop
+it afterwards (e.g. by starting an C<ev_prepare> watcher, which is the
+only event loop modification you are allowed to do).
+
+The callback prototype is C<ev_tstamp (*reschedule_cb)(ev_periodic
+*w, ev_tstamp now)>, e.g.:
+
+ static ev_tstamp
+ my_rescheduler (ev_periodic *w, ev_tstamp now)
+ {
+ return now + 60.;
+ }
+
+It must return the next time to trigger, based on the passed time value
+(that is, the lowest time value larger than to the second argument). It
+will usually be called just before the callback will be triggered, but
+might be called at other times, too.
+
+NOTE: I<< This callback must always return a time that is higher than or
+equal to the passed C<now> value >>.
+
+This can be used to create very complex timers, such as a timer that
+triggers on "next midnight, local time". To do this, you would calculate the
+next midnight after C<now> and return the timestamp value for this. How
+you do this is, again, up to you (but it is not trivial, which is the main
+reason I omitted it as an example).
+
+=back
+
+=item ev_periodic_again (loop, ev_periodic *)
+
+Simply stops and restarts the periodic watcher again. This is only useful
+when you changed some parameters or the reschedule callback would return
+a different time than the last time it was called (e.g. in a crond like
+program when the crontabs have changed).
+
+=item ev_tstamp ev_periodic_at (ev_periodic *)
+
+When active, returns the absolute time that the watcher is supposed
+to trigger next. This is not the same as the C<offset> argument to
+C<ev_periodic_set>, but indeed works even in interval and manual
+rescheduling modes.
+
+=item ev_tstamp offset [read-write]
+
+When repeating, this contains the offset value, otherwise this is the
+absolute point in time (the C<offset> value passed to C<ev_periodic_set>,
+although libev might modify this value for better numerical stability).
+
+Can be modified any time, but changes only take effect when the periodic
+timer fires or C<ev_periodic_again> is being called.
+
+=item ev_tstamp interval [read-write]
+
+The current interval value. Can be modified any time, but changes only
+take effect when the periodic timer fires or C<ev_periodic_again> is being
+called.
+
+=item ev_tstamp (*reschedule_cb)(ev_periodic *w, ev_tstamp now) [read-write]
+
+The current reschedule callback, or C<0>, if this functionality is
+switched off. Can be changed any time, but changes only take effect when
+the periodic timer fires or C<ev_periodic_again> is being called.
+
+=back
+
+=head3 Examples
+
+Example: Call a callback every hour, or, more precisely, whenever the
+system time is divisible by 3600. The callback invocation times have
+potentially a lot of jitter, but good long-term stability.
+
+ static void
+ clock_cb (struct ev_loop *loop, ev_periodic *w, int revents)
+ {
+ ... its now a full hour (UTC, or TAI or whatever your clock follows)
+ }
+
+ ev_periodic hourly_tick;
+ ev_periodic_init (&hourly_tick, clock_cb, 0., 3600., 0);
+ ev_periodic_start (loop, &hourly_tick);
+
+Example: The same as above, but use a reschedule callback to do it:
+
+ #include <math.h>
+
+ static ev_tstamp
+ my_scheduler_cb (ev_periodic *w, ev_tstamp now)
+ {
+ return now + (3600. - fmod (now, 3600.));
+ }
+
+ ev_periodic_init (&hourly_tick, clock_cb, 0., 0., my_scheduler_cb);
+
+Example: Call a callback every hour, starting now:
+
+ ev_periodic hourly_tick;
+ ev_periodic_init (&hourly_tick, clock_cb,
+ fmod (ev_now (loop), 3600.), 3600., 0);
+ ev_periodic_start (loop, &hourly_tick);
+
+
+=head2 C<ev_signal> - signal me when a signal gets signalled!
+
+Signal watchers will trigger an event when the process receives a specific
+signal one or more times. Even though signals are very asynchronous, libev
+will try its best to deliver signals synchronously, i.e. as part of the
+normal event processing, like any other event.
+
+If you want signals to be delivered truly asynchronously, just use
+C<sigaction> as you would do without libev and forget about sharing
+the signal. You can even use C<ev_async> from a signal handler to
+synchronously wake up an event loop.
+
+You can configure as many watchers as you like for the same signal, but
+only within the same loop, i.e. you can watch for C<SIGINT> in your
+default loop and for C<SIGIO> in another loop, but you cannot watch for
+C<SIGINT> in both the default loop and another loop at the same time. At
+the moment, C<SIGCHLD> is permanently tied to the default loop.
+
+When the first watcher gets started will libev actually register something
+with the kernel (thus it coexists with your own signal handlers as long as
+you don't register any with libev for the same signal).
+
+If possible and supported, libev will install its handlers with
+C<SA_RESTART> (or equivalent) behaviour enabled, so system calls should
+not be unduly interrupted. If you have a problem with system calls getting
+interrupted by signals you can block all signals in an C<ev_check> watcher
+and unblock them in an C<ev_prepare> watcher.
+
+=head3 The special problem of inheritance over fork/execve/pthread_create
+
+Both the signal mask (C<sigprocmask>) and the signal disposition
+(C<sigaction>) are unspecified after starting a signal watcher (and after
+stopping it again), that is, libev might or might not block the signal,
+and might or might not set or restore the installed signal handler (but
+see C<EVFLAG_NOSIGMASK>).
+
+While this does not matter for the signal disposition (libev never
+sets signals to C<SIG_IGN>, so handlers will be reset to C<SIG_DFL> on
+C<execve>), this matters for the signal mask: many programs do not expect
+certain signals to be blocked.
+
+This means that before calling C<exec> (from the child) you should reset
+the signal mask to whatever "default" you expect (all clear is a good
+choice usually).
+
+The simplest way to ensure that the signal mask is reset in the child is
+to install a fork handler with C<pthread_atfork> that resets it. That will
+catch fork calls done by libraries (such as the libc) as well.
+
+In current versions of libev, the signal will not be blocked indefinitely
+unless you use the C<signalfd> API (C<EV_SIGNALFD>). While this reduces
+the window of opportunity for problems, it will not go away, as libev
+I<has> to modify the signal mask, at least temporarily.
+
+So I can't stress this enough: I<If you do not reset your signal mask when
+you expect it to be empty, you have a race condition in your code>. This
+is not a libev-specific thing, this is true for most event libraries.
+
+=head3 The special problem of threads signal handling
+
+POSIX threads has problematic signal handling semantics, specifically,
+a lot of functionality (sigfd, sigwait etc.) only really works if all
+threads in a process block signals, which is hard to achieve.
+
+When you want to use sigwait (or mix libev signal handling with your own
+for the same signals), you can tackle this problem by globally blocking
+all signals before creating any threads (or creating them with a fully set
+sigprocmask) and also specifying the C<EVFLAG_NOSIGMASK> when creating
+loops. Then designate one thread as "signal receiver thread" which handles
+these signals. You can pass on any signals that libev might be interested
+in by calling C<ev_feed_signal>.
+
+=head3 Watcher-Specific Functions and Data Members
+
+=over 4
+
+=item ev_signal_init (ev_signal *, callback, int signum)
+
+=item ev_signal_set (ev_signal *, int signum)
+
+Configures the watcher to trigger on the given signal number (usually one
+of the C<SIGxxx> constants).
+
+=item int signum [read-only]
+
+The signal the watcher watches out for.
+
+=back
+
+=head3 Examples
+
+Example: Try to exit cleanly on SIGINT.
+
+ static void
+ sigint_cb (struct ev_loop *loop, ev_signal *w, int revents)
+ {
+ ev_break (loop, EVBREAK_ALL);
+ }
+
+ ev_signal signal_watcher;
+ ev_signal_init (&signal_watcher, sigint_cb, SIGINT);
+ ev_signal_start (loop, &signal_watcher);
+
+
+=head2 C<ev_child> - watch out for process status changes
+
+Child watchers trigger when your process receives a SIGCHLD in response to
+some child status changes (most typically when a child of yours dies or
+exits). It is permissible to install a child watcher I<after> the child
+has been forked (which implies it might have already exited), as long
+as the event loop isn't entered (or is continued from a watcher), i.e.,
+forking and then immediately registering a watcher for the child is fine,
+but forking and registering a watcher a few event loop iterations later or
+in the next callback invocation is not.
+
+Only the default event loop is capable of handling signals, and therefore
+you can only register child watchers in the default event loop.
+
+Due to some design glitches inside libev, child watchers will always be
+handled at maximum priority (their priority is set to C<EV_MAXPRI> by
+libev)
+
+=head3 Process Interaction
+
+Libev grabs C<SIGCHLD> as soon as the default event loop is
+initialised. This is necessary to guarantee proper behaviour even if the
+first child watcher is started after the child exits. The occurrence
+of C<SIGCHLD> is recorded asynchronously, but child reaping is done
+synchronously as part of the event loop processing. Libev always reaps all
+children, even ones not watched.
+
+=head3 Overriding the Built-In Processing
+
+Libev offers no special support for overriding the built-in child
+processing, but if your application collides with libev's default child
+handler, you can override it easily by installing your own handler for
+C<SIGCHLD> after initialising the default loop, and making sure the
+default loop never gets destroyed. You are encouraged, however, to use an
+event-based approach to child reaping and thus use libev's support for
+that, so other libev users can use C<ev_child> watchers freely.
+
+=head3 Stopping the Child Watcher
+
+Currently, the child watcher never gets stopped, even when the
+child terminates, so normally one needs to stop the watcher in the
+callback. Future versions of libev might stop the watcher automatically
+when a child exit is detected (calling C<ev_child_stop> twice is not a
+problem).
+
+=head3 Watcher-Specific Functions and Data Members
+
+=over 4
+
+=item ev_child_init (ev_child *, callback, int pid, int trace)
+
+=item ev_child_set (ev_child *, int pid, int trace)
+
+Configures the watcher to wait for status changes of process C<pid> (or
+I<any> process if C<pid> is specified as C<0>). The callback can look
+at the C<rstatus> member of the C<ev_child> watcher structure to see
+the status word (use the macros from C<sys/wait.h> and see your systems
+C<waitpid> documentation). The C<rpid> member contains the pid of the
+process causing the status change. C<trace> must be either C<0> (only
+activate the watcher when the process terminates) or C<1> (additionally
+activate the watcher when the process is stopped or continued).
+
+=item int pid [read-only]
+
+The process id this watcher watches out for, or C<0>, meaning any process id.
+
+=item int rpid [read-write]
+
+The process id that detected a status change.
+
+=item int rstatus [read-write]
+
+The process exit/trace status caused by C<rpid> (see your systems
+C<waitpid> and C<sys/wait.h> documentation for details).
+
+=back
+
+=head3 Examples
+
+Example: C<fork()> a new process and install a child handler to wait for
+its completion.
+
+ ev_child cw;
+
+ static void
+ child_cb (EV_P_ ev_child *w, int revents)
+ {
+ ev_child_stop (EV_A_ w);
+ printf ("process %d exited with status %x\n", w->rpid, w->rstatus);
+ }
+
+ pid_t pid = fork ();
+
+ if (pid < 0)
+ // error
+ else if (pid == 0)
+ {
+ // the forked child executes here
+ exit (1);
+ }
+ else
+ {
+ ev_child_init (&cw, child_cb, pid, 0);
+ ev_child_start (EV_DEFAULT_ &cw);
+ }
+
+
+=head2 C<ev_stat> - did the file attributes just change?
+
+This watches a file system path for attribute changes. That is, it calls
+C<stat> on that path in regular intervals (or when the OS says it changed)
+and sees if it changed compared to the last time, invoking the callback if
+it did.
+
+The path does not need to exist: changing from "path exists" to "path does
+not exist" is a status change like any other. The condition "path does not
+exist" (or more correctly "path cannot be stat'ed") is signified by the
+C<st_nlink> field being zero (which is otherwise always forced to be at
+least one) and all the other fields of the stat buffer having unspecified
+contents.
+
+The path I<must not> end in a slash or contain special components such as
+C<.> or C<..>. The path I<should> be absolute: If it is relative and
+your working directory changes, then the behaviour is undefined.
+
+Since there is no portable change notification interface available, the
+portable implementation simply calls C<stat(2)> regularly on the path
+to see if it changed somehow. You can specify a recommended polling
+interval for this case. If you specify a polling interval of C<0> (highly
+recommended!) then a I<suitable, unspecified default> value will be used
+(which you can expect to be around five seconds, although this might
+change dynamically). Libev will also impose a minimum interval which is
+currently around C<0.1>, but that's usually overkill.
+
+This watcher type is not meant for massive numbers of stat watchers,
+as even with OS-supported change notifications, this can be
+resource-intensive.
+
+At the time of this writing, the only OS-specific interface implemented
+is the Linux inotify interface (implementing kqueue support is left as an
+exercise for the reader. Note, however, that the author sees no way of
+implementing C<ev_stat> semantics with kqueue, except as a hint).
+
+=head3 ABI Issues (Largefile Support)
+
+Libev by default (unless the user overrides this) uses the default
+compilation environment, which means that on systems with large file
+support disabled by default, you get the 32 bit version of the stat
+structure. When using the library from programs that change the ABI to
+use 64 bit file offsets the programs will fail. In that case you have to
+compile libev with the same flags to get binary compatibility. This is
+obviously the case with any flags that change the ABI, but the problem is
+most noticeably displayed with ev_stat and large file support.
+
+The solution for this is to lobby your distribution maker to make large
+file interfaces available by default (as e.g. FreeBSD does) and not
+optional. Libev cannot simply switch on large file support because it has
+to exchange stat structures with application programs compiled using the
+default compilation environment.
+
+=head3 Inotify and Kqueue
+
+When C<inotify (7)> support has been compiled into libev and present at
+runtime, it will be used to speed up change detection where possible. The
+inotify descriptor will be created lazily when the first C<ev_stat>
+watcher is being started.
+
+Inotify presence does not change the semantics of C<ev_stat> watchers
+except that changes might be detected earlier, and in some cases, to avoid
+making regular C<stat> calls. Even in the presence of inotify support
+there are many cases where libev has to resort to regular C<stat> polling,
+but as long as kernel 2.6.25 or newer is used (2.6.24 and older have too
+many bugs), the path exists (i.e. stat succeeds), and the path resides on
+a local filesystem (libev currently assumes only ext2/3, jfs, reiserfs and
+xfs are fully working) libev usually gets away without polling.
+
+There is no support for kqueue, as apparently it cannot be used to
+implement this functionality, due to the requirement of having a file
+descriptor open on the object at all times, and detecting renames, unlinks
+etc. is difficult.
+
+=head3 C<stat ()> is a synchronous operation
+
+Libev doesn't normally do any kind of I/O itself, and so is not blocking
+the process. The exception are C<ev_stat> watchers - those call C<stat
+()>, which is a synchronous operation.
+
+For local paths, this usually doesn't matter: unless the system is very
+busy or the intervals between stat's are large, a stat call will be fast,
+as the path data is usually in memory already (except when starting the
+watcher).
+
+For networked file systems, calling C<stat ()> can block an indefinite
+time due to network issues, and even under good conditions, a stat call
+often takes multiple milliseconds.
+
+Therefore, it is best to avoid using C<ev_stat> watchers on networked
+paths, although this is fully supported by libev.
+
+=head3 The special problem of stat time resolution
+
+The C<stat ()> system call only supports full-second resolution portably,
+and even on systems where the resolution is higher, most file systems
+still only support whole seconds.
+
+That means that, if the time is the only thing that changes, you can
+easily miss updates: on the first update, C<ev_stat> detects a change and
+calls your callback, which does something. When there is another update
+within the same second, C<ev_stat> will be unable to detect unless the
+stat data does change in other ways (e.g. file size).
+
+The solution to this is to delay acting on a change for slightly more
+than a second (or till slightly after the next full second boundary), using
+a roughly one-second-delay C<ev_timer> (e.g. C<ev_timer_set (w, 0., 1.02);
+ev_timer_again (loop, w)>).
+
+The C<.02> offset is added to work around small timing inconsistencies
+of some operating systems (where the second counter of the current time
+might be be delayed. One such system is the Linux kernel, where a call to
+C<gettimeofday> might return a timestamp with a full second later than
+a subsequent C<time> call - if the equivalent of C<time ()> is used to
+update file times then there will be a small window where the kernel uses
+the previous second to update file times but libev might already execute
+the timer callback).
+
+=head3 Watcher-Specific Functions and Data Members
+
+=over 4
+
+=item ev_stat_init (ev_stat *, callback, const char *path, ev_tstamp interval)
+
+=item ev_stat_set (ev_stat *, const char *path, ev_tstamp interval)
+
+Configures the watcher to wait for status changes of the given
+C<path>. The C<interval> is a hint on how quickly a change is expected to
+be detected and should normally be specified as C<0> to let libev choose
+a suitable value. The memory pointed to by C<path> must point to the same
+path for as long as the watcher is active.
+
+The callback will receive an C<EV_STAT> event when a change was detected,
+relative to the attributes at the time the watcher was started (or the
+last change was detected).
+
+=item ev_stat_stat (loop, ev_stat *)
+
+Updates the stat buffer immediately with new values. If you change the
+watched path in your callback, you could call this function to avoid
+detecting this change (while introducing a race condition if you are not
+the only one changing the path). Can also be useful simply to find out the
+new values.
+
+=item ev_statdata attr [read-only]
+
+The most-recently detected attributes of the file. Although the type is
+C<ev_statdata>, this is usually the (or one of the) C<struct stat> types
+suitable for your system, but you can only rely on the POSIX-standardised
+members to be present. If the C<st_nlink> member is C<0>, then there was
+some error while C<stat>ing the file.
+
+=item ev_statdata prev [read-only]
+
+The previous attributes of the file. The callback gets invoked whenever
+C<prev> != C<attr>, or, more precisely, one or more of these members
+differ: C<st_dev>, C<st_ino>, C<st_mode>, C<st_nlink>, C<st_uid>,
+C<st_gid>, C<st_rdev>, C<st_size>, C<st_atime>, C<st_mtime>, C<st_ctime>.
+
+=item ev_tstamp interval [read-only]
+
+The specified interval.
+
+=item const char *path [read-only]
+
+The file system path that is being watched.
+
+=back
+
+=head3 Examples
+
+Example: Watch C</etc/passwd> for attribute changes.
+
+ static void
+ passwd_cb (struct ev_loop *loop, ev_stat *w, int revents)
+ {
+ /* /etc/passwd changed in some way */
+ if (w->attr.st_nlink)
+ {
+ printf ("passwd current size %ld\n", (long)w->attr.st_size);
+ printf ("passwd current atime %ld\n", (long)w->attr.st_mtime);
+ printf ("passwd current mtime %ld\n", (long)w->attr.st_mtime);
+ }
+ else
+ /* you shalt not abuse printf for puts */
+ puts ("wow, /etc/passwd is not there, expect problems. "
+ "if this is windows, they already arrived\n");
+ }
+
+ ...
+ ev_stat passwd;
+
+ ev_stat_init (&passwd, passwd_cb, "/etc/passwd", 0.);
+ ev_stat_start (loop, &passwd);
+
+Example: Like above, but additionally use a one-second delay so we do not
+miss updates (however, frequent updates will delay processing, too, so
+one might do the work both on C<ev_stat> callback invocation I<and> on
+C<ev_timer> callback invocation).
+
+ static ev_stat passwd;
+ static ev_timer timer;
+
+ static void
+ timer_cb (EV_P_ ev_timer *w, int revents)
+ {
+ ev_timer_stop (EV_A_ w);
+
+ /* now it's one second after the most recent passwd change */
+ }
+
+ static void
+ stat_cb (EV_P_ ev_stat *w, int revents)
+ {
+ /* reset the one-second timer */
+ ev_timer_again (EV_A_ &timer);
+ }
+
+ ...
+ ev_stat_init (&passwd, stat_cb, "/etc/passwd", 0.);
+ ev_stat_start (loop, &passwd);
+ ev_timer_init (&timer, timer_cb, 0., 1.02);
+
+
+=head2 C<ev_idle> - when you've got nothing better to do...
+
+Idle watchers trigger events when no other events of the same or higher
+priority are pending (prepare, check and other idle watchers do not count
+as receiving "events").
+
+That is, as long as your process is busy handling sockets or timeouts
+(or even signals, imagine) of the same or higher priority it will not be
+triggered. But when your process is idle (or only lower-priority watchers
+are pending), the idle watchers are being called once per event loop
+iteration - until stopped, that is, or your process receives more events
+and becomes busy again with higher priority stuff.
+
+The most noteworthy effect is that as long as any idle watchers are
+active, the process will not block when waiting for new events.
+
+Apart from keeping your process non-blocking (which is a useful
+effect on its own sometimes), idle watchers are a good place to do
+"pseudo-background processing", or delay processing stuff to after the
+event loop has handled all outstanding events.
+
+=head3 Watcher-Specific Functions and Data Members
+
+=over 4
+
+=item ev_idle_init (ev_idle *, callback)
+
+Initialises and configures the idle watcher - it has no parameters of any
+kind. There is a C<ev_idle_set> macro, but using it is utterly pointless,
+believe me.
+
+=back
+
+=head3 Examples
+
+Example: Dynamically allocate an C<ev_idle> watcher, start it, and in the
+callback, free it. Also, use no error checking, as usual.
+
+ static void
+ idle_cb (struct ev_loop *loop, ev_idle *w, int revents)
+ {
+ free (w);
+ // now do something you wanted to do when the program has
+ // no longer anything immediate to do.
+ }
+
+ ev_idle *idle_watcher = malloc (sizeof (ev_idle));
+ ev_idle_init (idle_watcher, idle_cb);
+ ev_idle_start (loop, idle_watcher);
+
+
+=head2 C<ev_prepare> and C<ev_check> - customise your event loop!
+
+Prepare and check watchers are usually (but not always) used in pairs:
+prepare watchers get invoked before the process blocks and check watchers
+afterwards.
+
+You I<must not> call C<ev_run> or similar functions that enter
+the current event loop from either C<ev_prepare> or C<ev_check>
+watchers. Other loops than the current one are fine, however. The
+rationale behind this is that you do not need to check for recursion in
+those watchers, i.e. the sequence will always be C<ev_prepare>, blocking,
+C<ev_check> so if you have one watcher of each kind they will always be
+called in pairs bracketing the blocking call.
+
+Their main purpose is to integrate other event mechanisms into libev and
+their use is somewhat advanced. They could be used, for example, to track
+variable changes, implement your own watchers, integrate net-snmp or a
+coroutine library and lots more. They are also occasionally useful if
+you cache some data and want to flush it before blocking (for example,
+in X programs you might want to do an C<XFlush ()> in an C<ev_prepare>
+watcher).
+
+This is done by examining in each prepare call which file descriptors
+need to be watched by the other library, registering C<ev_io> watchers
+for them and starting an C<ev_timer> watcher for any timeouts (many
+libraries provide exactly this functionality). Then, in the check watcher,
+you check for any events that occurred (by checking the pending status
+of all watchers and stopping them) and call back into the library. The
+I/O and timer callbacks will never actually be called (but must be valid
+nevertheless, because you never know, you know?).
+
+As another example, the Perl Coro module uses these hooks to integrate
+coroutines into libev programs, by yielding to other active coroutines
+during each prepare and only letting the process block if no coroutines
+are ready to run (it's actually more complicated: it only runs coroutines
+with priority higher than or equal to the event loop and one coroutine
+of lower priority, but only once, using idle watchers to keep the event
+loop from blocking if lower-priority coroutines are active, thus mapping
+low-priority coroutines to idle/background tasks).
+
+It is recommended to give C<ev_check> watchers highest (C<EV_MAXPRI>)
+priority, to ensure that they are being run before any other watchers
+after the poll (this doesn't matter for C<ev_prepare> watchers).
+
+Also, C<ev_check> watchers (and C<ev_prepare> watchers, too) should not
+activate ("feed") events into libev. While libev fully supports this, they
+might get executed before other C<ev_check> watchers did their job. As
+C<ev_check> watchers are often used to embed other (non-libev) event
+loops those other event loops might be in an unusable state until their
+C<ev_check> watcher ran (always remind yourself to coexist peacefully with
+others).
+
+=head3 Watcher-Specific Functions and Data Members
+
+=over 4
+
+=item ev_prepare_init (ev_prepare *, callback)
+
+=item ev_check_init (ev_check *, callback)
+
+Initialises and configures the prepare or check watcher - they have no
+parameters of any kind. There are C<ev_prepare_set> and C<ev_check_set>
+macros, but using them is utterly, utterly, utterly and completely
+pointless.
+
+=back
+
+=head3 Examples
+
+There are a number of principal ways to embed other event loops or modules
+into libev. Here are some ideas on how to include libadns into libev
+(there is a Perl module named C<EV::ADNS> that does this, which you could
+use as a working example. Another Perl module named C<EV::Glib> embeds a
+Glib main context into libev, and finally, C<Glib::EV> embeds EV into the
+Glib event loop).
+
+Method 1: Add IO watchers and a timeout watcher in a prepare handler,
+and in a check watcher, destroy them and call into libadns. What follows
+is pseudo-code only of course. This requires you to either use a low
+priority for the check watcher or use C<ev_clear_pending> explicitly, as
+the callbacks for the IO/timeout watchers might not have been called yet.
+
+ static ev_io iow [nfd];
+ static ev_timer tw;
+
+ static void
+ io_cb (struct ev_loop *loop, ev_io *w, int revents)
+ {
+ }
+
+ // create io watchers for each fd and a timer before blocking
+ static void
+ adns_prepare_cb (struct ev_loop *loop, ev_prepare *w, int revents)
+ {
+ int timeout = 3600000;
+ struct pollfd fds [nfd];
+ // actual code will need to loop here and realloc etc.
+ adns_beforepoll (ads, fds, &nfd, &timeout, timeval_from (ev_time ()));
+
+ /* the callback is illegal, but won't be called as we stop during check */
+ ev_timer_init (&tw, 0, timeout * 1e-3, 0.);
+ ev_timer_start (loop, &tw);
+
+ // create one ev_io per pollfd
+ for (int i = 0; i < nfd; ++i)
+ {
+ ev_io_init (iow + i, io_cb, fds [i].fd,
+ ((fds [i].events & POLLIN ? EV_READ : 0)
+ | (fds [i].events & POLLOUT ? EV_WRITE : 0)));
+
+ fds [i].revents = 0;
+ ev_io_start (loop, iow + i);
+ }
+ }
+
+ // stop all watchers after blocking
+ static void
+ adns_check_cb (struct ev_loop *loop, ev_check *w, int revents)
+ {
+ ev_timer_stop (loop, &tw);
+
+ for (int i = 0; i < nfd; ++i)
+ {
+ // set the relevant poll flags
+ // could also call adns_processreadable etc. here
+ struct pollfd *fd = fds + i;
+ int revents = ev_clear_pending (iow + i);
+ if (revents & EV_READ ) fd->revents |= fd->events & POLLIN;
+ if (revents & EV_WRITE) fd->revents |= fd->events & POLLOUT;
+
+ // now stop the watcher
+ ev_io_stop (loop, iow + i);
+ }
+
+ adns_afterpoll (adns, fds, nfd, timeval_from (ev_now (loop));
+ }
+
+Method 2: This would be just like method 1, but you run C<adns_afterpoll>
+in the prepare watcher and would dispose of the check watcher.
+
+Method 3: If the module to be embedded supports explicit event
+notification (libadns does), you can also make use of the actual watcher
+callbacks, and only destroy/create the watchers in the prepare watcher.
+
+ static void
+ timer_cb (EV_P_ ev_timer *w, int revents)
+ {
+ adns_state ads = (adns_state)w->data;
+ update_now (EV_A);
+
+ adns_processtimeouts (ads, &tv_now);
+ }
+
+ static void
+ io_cb (EV_P_ ev_io *w, int revents)
+ {
+ adns_state ads = (adns_state)w->data;
+ update_now (EV_A);
+
+ if (revents & EV_READ ) adns_processreadable (ads, w->fd, &tv_now);
+ if (revents & EV_WRITE) adns_processwriteable (ads, w->fd, &tv_now);
+ }
+
+ // do not ever call adns_afterpoll
+
+Method 4: Do not use a prepare or check watcher because the module you
+want to embed is not flexible enough to support it. Instead, you can
+override their poll function. The drawback with this solution is that the
+main loop is now no longer controllable by EV. The C<Glib::EV> module uses
+this approach, effectively embedding EV as a client into the horrible
+libglib event loop.
+
+ static gint
+ event_poll_func (GPollFD *fds, guint nfds, gint timeout)
+ {
+ int got_events = 0;
+
+ for (n = 0; n < nfds; ++n)
+ // create/start io watcher that sets the relevant bits in fds[n] and increment got_events
+
+ if (timeout >= 0)
+ // create/start timer
+
+ // poll
+ ev_run (EV_A_ 0);
+
+ // stop timer again
+ if (timeout >= 0)
+ ev_timer_stop (EV_A_ &to);
+
+ // stop io watchers again - their callbacks should have set
+ for (n = 0; n < nfds; ++n)
+ ev_io_stop (EV_A_ iow [n]);
+
+ return got_events;
+ }
+
+
+=head2 C<ev_embed> - when one backend isn't enough...
+
+This is a rather advanced watcher type that lets you embed one event loop
+into another (currently only C<ev_io> events are supported in the embedded
+loop, other types of watchers might be handled in a delayed or incorrect
+fashion and must not be used).
+
+There are primarily two reasons you would want that: work around bugs and
+prioritise I/O.
+
+As an example for a bug workaround, the kqueue backend might only support
+sockets on some platform, so it is unusable as generic backend, but you
+still want to make use of it because you have many sockets and it scales
+so nicely. In this case, you would create a kqueue-based loop and embed
+it into your default loop (which might use e.g. poll). Overall operation
+will be a bit slower because first libev has to call C<poll> and then
+C<kevent>, but at least you can use both mechanisms for what they are
+best: C<kqueue> for scalable sockets and C<poll> if you want it to work :)
+
+As for prioritising I/O: under rare circumstances you have the case where
+some fds have to be watched and handled very quickly (with low latency),
+and even priorities and idle watchers might have too much overhead. In
+this case you would put all the high priority stuff in one loop and all
+the rest in a second one, and embed the second one in the first.
+
+As long as the watcher is active, the callback will be invoked every
+time there might be events pending in the embedded loop. The callback
+must then call C<ev_embed_sweep (mainloop, watcher)> to make a single
+sweep and invoke their callbacks (the callback doesn't need to invoke the
+C<ev_embed_sweep> function directly, it could also start an idle watcher
+to give the embedded loop strictly lower priority for example).
+
+You can also set the callback to C<0>, in which case the embed watcher
+will automatically execute the embedded loop sweep whenever necessary.
+
+Fork detection will be handled transparently while the C<ev_embed> watcher
+is active, i.e., the embedded loop will automatically be forked when the
+embedding loop forks. In other cases, the user is responsible for calling
+C<ev_loop_fork> on the embedded loop.
+
+Unfortunately, not all backends are embeddable: only the ones returned by
+C<ev_embeddable_backends> are, which, unfortunately, does not include any
+portable one.
+
+So when you want to use this feature you will always have to be prepared
+that you cannot get an embeddable loop. The recommended way to get around
+this is to have a separate variables for your embeddable loop, try to
+create it, and if that fails, use the normal loop for everything.
+
+=head3 C<ev_embed> and fork
+
+While the C<ev_embed> watcher is running, forks in the embedding loop will
+automatically be applied to the embedded loop as well, so no special
+fork handling is required in that case. When the watcher is not running,
+however, it is still the task of the libev user to call C<ev_loop_fork ()>
+as applicable.
+
+=head3 Watcher-Specific Functions and Data Members
+
+=over 4
+
+=item ev_embed_init (ev_embed *, callback, struct ev_loop *embedded_loop)
+
+=item ev_embed_set (ev_embed *, callback, struct ev_loop *embedded_loop)
+
+Configures the watcher to embed the given loop, which must be
+embeddable. If the callback is C<0>, then C<ev_embed_sweep> will be
+invoked automatically, otherwise it is the responsibility of the callback
+to invoke it (it will continue to be called until the sweep has been done,
+if you do not want that, you need to temporarily stop the embed watcher).
+
+=item ev_embed_sweep (loop, ev_embed *)
+
+Make a single, non-blocking sweep over the embedded loop. This works
+similarly to C<ev_run (embedded_loop, EVRUN_NOWAIT)>, but in the most
+appropriate way for embedded loops.
+
+=item struct ev_loop *other [read-only]
+
+The embedded event loop.
+
+=back
+
+=head3 Examples
+
+Example: Try to get an embeddable event loop and embed it into the default
+event loop. If that is not possible, use the default loop. The default
+loop is stored in C<loop_hi>, while the embeddable loop is stored in
+C<loop_lo> (which is C<loop_hi> in the case no embeddable loop can be
+used).
+
+ struct ev_loop *loop_hi = ev_default_init (0);
+ struct ev_loop *loop_lo = 0;
+ ev_embed embed;
+
+ // see if there is a chance of getting one that works
+ // (remember that a flags value of 0 means autodetection)
+ loop_lo = ev_embeddable_backends () & ev_recommended_backends ()
+ ? ev_loop_new (ev_embeddable_backends () & ev_recommended_backends ())
+ : 0;
+
+ // if we got one, then embed it, otherwise default to loop_hi
+ if (loop_lo)
+ {
+ ev_embed_init (&embed, 0, loop_lo);
+ ev_embed_start (loop_hi, &embed);
+ }
+ else
+ loop_lo = loop_hi;
+
+Example: Check if kqueue is available but not recommended and create
+a kqueue backend for use with sockets (which usually work with any
+kqueue implementation). Store the kqueue/socket-only event loop in
+C<loop_socket>. (One might optionally use C<EVFLAG_NOENV>, too).
+
+ struct ev_loop *loop = ev_default_init (0);
+ struct ev_loop *loop_socket = 0;
+ ev_embed embed;
+
+ if (ev_supported_backends () & ~ev_recommended_backends () & EVBACKEND_KQUEUE)
+ if ((loop_socket = ev_loop_new (EVBACKEND_KQUEUE))
+ {
+ ev_embed_init (&embed, 0, loop_socket);
+ ev_embed_start (loop, &embed);
+ }
+
+ if (!loop_socket)
+ loop_socket = loop;
+
+ // now use loop_socket for all sockets, and loop for everything else
+
+
+=head2 C<ev_fork> - the audacity to resume the event loop after a fork
+
+Fork watchers are called when a C<fork ()> was detected (usually because
+whoever is a good citizen cared to tell libev about it by calling
+C<ev_default_fork> or C<ev_loop_fork>). The invocation is done before the
+event loop blocks next and before C<ev_check> watchers are being called,
+and only in the child after the fork. If whoever good citizen calling
+C<ev_default_fork> cheats and calls it in the wrong process, the fork
+handlers will be invoked, too, of course.
+
+=head3 The special problem of life after fork - how is it possible?
+
+Most uses of C<fork()> consist of forking, then some simple calls to set
+up/change the process environment, followed by a call to C<exec()>. This
+sequence should be handled by libev without any problems.
+
+This changes when the application actually wants to do event handling
+in the child, or both parent in child, in effect "continuing" after the
+fork.
+
+The default mode of operation (for libev, with application help to detect
+forks) is to duplicate all the state in the child, as would be expected
+when I<either> the parent I<or> the child process continues.
+
+When both processes want to continue using libev, then this is usually the
+wrong result. In that case, usually one process (typically the parent) is
+supposed to continue with all watchers in place as before, while the other
+process typically wants to start fresh, i.e. without any active watchers.
+
+The cleanest and most efficient way to achieve that with libev is to
+simply create a new event loop, which of course will be "empty", and
+use that for new watchers. This has the advantage of not touching more
+memory than necessary, and thus avoiding the copy-on-write, and the
+disadvantage of having to use multiple event loops (which do not support
+signal watchers).
+
+When this is not possible, or you want to use the default loop for
+other reasons, then in the process that wants to start "fresh", call
+C<ev_loop_destroy (EV_DEFAULT)> followed by C<ev_default_loop (...)>.
+Destroying the default loop will "orphan" (not stop) all registered
+watchers, so you have to be careful not to execute code that modifies
+those watchers. Note also that in that case, you have to re-register any
+signal watchers.
+
+=head3 Watcher-Specific Functions and Data Members
+
+=over 4
+
+=item ev_fork_init (ev_fork *, callback)
+
+Initialises and configures the fork watcher - it has no parameters of any
+kind. There is a C<ev_fork_set> macro, but using it is utterly pointless,
+really.
+
+=back
+
+
+=head2 C<ev_cleanup> - even the best things end
+
+Cleanup watchers are called just before the event loop is being destroyed
+by a call to C<ev_loop_destroy>.
+
+While there is no guarantee that the event loop gets destroyed, cleanup
+watchers provide a convenient method to install cleanup hooks for your
+program, worker threads and so on - you just to make sure to destroy the
+loop when you want them to be invoked.
+
+Cleanup watchers are invoked in the same way as any other watcher. Unlike
+all other watchers, they do not keep a reference to the event loop (which
+makes a lot of sense if you think about it). Like all other watchers, you
+can call libev functions in the callback, except C<ev_cleanup_start>.
+
+=head3 Watcher-Specific Functions and Data Members
+
+=over 4
+
+=item ev_cleanup_init (ev_cleanup *, callback)
+
+Initialises and configures the cleanup watcher - it has no parameters of
+any kind. There is a C<ev_cleanup_set> macro, but using it is utterly
+pointless, I assure you.
+
+=back
+
+Example: Register an atexit handler to destroy the default loop, so any
+cleanup functions are called.
+
+ static void
+ program_exits (void)
+ {
+ ev_loop_destroy (EV_DEFAULT_UC);
+ }
+
+ ...
+ atexit (program_exits);
+
+
+=head2 C<ev_async> - how to wake up an event loop
+
+In general, you cannot use an C<ev_loop> from multiple threads or other
+asynchronous sources such as signal handlers (as opposed to multiple event
+loops - those are of course safe to use in different threads).
+
+Sometimes, however, you need to wake up an event loop you do not control,
+for example because it belongs to another thread. This is what C<ev_async>
+watchers do: as long as the C<ev_async> watcher is active, you can signal
+it by calling C<ev_async_send>, which is thread- and signal safe.
+
+This functionality is very similar to C<ev_signal> watchers, as signals,
+too, are asynchronous in nature, and signals, too, will be compressed
+(i.e. the number of callback invocations may be less than the number of
+C<ev_async_sent> calls). In fact, you could use signal watchers as a kind
+of "global async watchers" by using a watcher on an otherwise unused
+signal, and C<ev_feed_signal> to signal this watcher from another thread,
+even without knowing which loop owns the signal.
+
+Unlike C<ev_signal> watchers, C<ev_async> works with any event loop, not
+just the default loop.
+
+=head3 Queueing
+
+C<ev_async> does not support queueing of data in any way. The reason
+is that the author does not know of a simple (or any) algorithm for a
+multiple-writer-single-reader queue that works in all cases and doesn't
+need elaborate support such as pthreads or unportable memory access
+semantics.
+
+That means that if you want to queue data, you have to provide your own
+queue. But at least I can tell you how to implement locking around your
+queue:
+
+=over 4
+
+=item queueing from a signal handler context
+
+To implement race-free queueing, you simply add to the queue in the signal
+handler but you block the signal handler in the watcher callback. Here is
+an example that does that for some fictitious SIGUSR1 handler:
+
+ static ev_async mysig;
+
+ static void
+ sigusr1_handler (void)
+ {
+ sometype data;
+
+ // no locking etc.
+ queue_put (data);
+ ev_async_send (EV_DEFAULT_ &mysig);
+ }
+
+ static void
+ mysig_cb (EV_P_ ev_async *w, int revents)
+ {
+ sometype data;
+ sigset_t block, prev;
+
+ sigemptyset (&block);
+ sigaddset (&block, SIGUSR1);
+ sigprocmask (SIG_BLOCK, &block, &prev);
+
+ while (queue_get (&data))
+ process (data);
+
+ if (sigismember (&prev, SIGUSR1)
+ sigprocmask (SIG_UNBLOCK, &block, 0);
+ }
+
+(Note: pthreads in theory requires you to use C<pthread_setmask>
+instead of C<sigprocmask> when you use threads, but libev doesn't do it
+either...).
+
+=item queueing from a thread context
+
+The strategy for threads is different, as you cannot (easily) block
+threads but you can easily preempt them, so to queue safely you need to
+employ a traditional mutex lock, such as in this pthread example:
+
+ static ev_async mysig;
+ static pthread_mutex_t mymutex = PTHREAD_MUTEX_INITIALIZER;
+
+ static void
+ otherthread (void)
+ {
+ // only need to lock the actual queueing operation
+ pthread_mutex_lock (&mymutex);
+ queue_put (data);
+ pthread_mutex_unlock (&mymutex);
+
+ ev_async_send (EV_DEFAULT_ &mysig);
+ }
+
+ static void
+ mysig_cb (EV_P_ ev_async *w, int revents)
+ {
+ pthread_mutex_lock (&mymutex);
+
+ while (queue_get (&data))
+ process (data);
+
+ pthread_mutex_unlock (&mymutex);
+ }
+
+=back
+
+
+=head3 Watcher-Specific Functions and Data Members
+
+=over 4
+
+=item ev_async_init (ev_async *, callback)
+
+Initialises and configures the async watcher - it has no parameters of any
+kind. There is a C<ev_async_set> macro, but using it is utterly pointless,
+trust me.
+
+=item ev_async_send (loop, ev_async *)
+
+Sends/signals/activates the given C<ev_async> watcher, that is, feeds
+an C<EV_ASYNC> event on the watcher into the event loop, and instantly
+returns.
+
+Unlike C<ev_feed_event>, this call is safe to do from other threads,
+signal or similar contexts (see the discussion of C<EV_ATOMIC_T> in the
+embedding section below on what exactly this means).
+
+Note that, as with other watchers in libev, multiple events might get
+compressed into a single callback invocation (another way to look at this
+is that C<ev_async> watchers are level-triggered, set on C<ev_async_send>,
+reset when the event loop detects that).
+
+This call incurs the overhead of a system call only once per event loop
+iteration, so while the overhead might be noticeable, it doesn't apply to
+repeated calls to C<ev_async_send> for the same event loop.
+
+=item bool = ev_async_pending (ev_async *)
+
+Returns a non-zero value when C<ev_async_send> has been called on the
+watcher but the event has not yet been processed (or even noted) by the
+event loop.
+
+C<ev_async_send> sets a flag in the watcher and wakes up the loop. When
+the loop iterates next and checks for the watcher to have become active,
+it will reset the flag again. C<ev_async_pending> can be used to very
+quickly check whether invoking the loop might be a good idea.
+
+Not that this does I<not> check whether the watcher itself is pending,
+only whether it has been requested to make this watcher pending: there
+is a time window between the event loop checking and resetting the async
+notification, and the callback being invoked.
+
+=back
+
+
+=head1 OTHER FUNCTIONS
+
+There are some other functions of possible interest. Described. Here. Now.
+
+=over 4
+
+=item ev_once (loop, int fd, int events, ev_tstamp timeout, callback)
+
+This function combines a simple timer and an I/O watcher, calls your
+callback on whichever event happens first and automatically stops both
+watchers. This is useful if you want to wait for a single event on an fd
+or timeout without having to allocate/configure/start/stop/free one or
+more watchers yourself.
+
+If C<fd> is less than 0, then no I/O watcher will be started and the
+C<events> argument is being ignored. Otherwise, an C<ev_io> watcher for
+the given C<fd> and C<events> set will be created and started.
+
+If C<timeout> is less than 0, then no timeout watcher will be
+started. Otherwise an C<ev_timer> watcher with after = C<timeout> (and
+repeat = 0) will be started. C<0> is a valid timeout.
+
+The callback has the type C<void (*cb)(int revents, void *arg)> and is
+passed an C<revents> set like normal event callbacks (a combination of
+C<EV_ERROR>, C<EV_READ>, C<EV_WRITE> or C<EV_TIMER>) and the C<arg>
+value passed to C<ev_once>. Note that it is possible to receive I<both>
+a timeout and an io event at the same time - you probably should give io
+events precedence.
+
+Example: wait up to ten seconds for data to appear on STDIN_FILENO.
+
+ static void stdin_ready (int revents, void *arg)
+ {
+ if (revents & EV_READ)
+ /* stdin might have data for us, joy! */;
+ else if (revents & EV_TIMER)
+ /* doh, nothing entered */;
+ }
+
+ ev_once (STDIN_FILENO, EV_READ, 10., stdin_ready, 0);
+
+=item ev_feed_fd_event (loop, int fd, int revents)
+
+Feed an event on the given fd, as if a file descriptor backend detected
+the given events it.
+
+=item ev_feed_signal_event (loop, int signum)
+
+Feed an event as if the given signal occurred. See also C<ev_feed_signal>,
+which is async-safe.
+
+=back
+
+
+=head1 COMMON OR USEFUL IDIOMS (OR BOTH)
+
+This section explains some common idioms that are not immediately
+obvious. Note that examples are sprinkled over the whole manual, and this
+section only contains stuff that wouldn't fit anywhere else.
+
+=head2 ASSOCIATING CUSTOM DATA WITH A WATCHER
+
+Each watcher has, by default, a C<void *data> member that you can read
+or modify at any time: libev will completely ignore it. This can be used
+to associate arbitrary data with your watcher. If you need more data and
+don't want to allocate memory separately and store a pointer to it in that
+data member, you can also "subclass" the watcher type and provide your own
+data:
+
+ struct my_io
+ {
+ ev_io io;
+ int otherfd;
+ void *somedata;
+ struct whatever *mostinteresting;
+ };
+
+ ...
+ struct my_io w;
+ ev_io_init (&w.io, my_cb, fd, EV_READ);
+
+And since your callback will be called with a pointer to the watcher, you
+can cast it back to your own type:
+
+ static void my_cb (struct ev_loop *loop, ev_io *w_, int revents)
+ {
+ struct my_io *w = (struct my_io *)w_;
+ ...
+ }
+
+More interesting and less C-conformant ways of casting your callback
+function type instead have been omitted.
+
+=head2 BUILDING YOUR OWN COMPOSITE WATCHERS
+
+Another common scenario is to use some data structure with multiple
+embedded watchers, in effect creating your own watcher that combines
+multiple libev event sources into one "super-watcher":
+
+ struct my_biggy
+ {
+ int some_data;
+ ev_timer t1;
+ ev_timer t2;
+ }
+
+In this case getting the pointer to C<my_biggy> is a bit more
+complicated: Either you store the address of your C<my_biggy> struct in
+the C<data> member of the watcher (for woozies or C++ coders), or you need
+to use some pointer arithmetic using C<offsetof> inside your watchers (for
+real programmers):
+
+ #include <stddef.h>
+
+ static void
+ t1_cb (EV_P_ ev_timer *w, int revents)
+ {
+ struct my_biggy big = (struct my_biggy *)
+ (((char *)w) - offsetof (struct my_biggy, t1));
+ }
+
+ static void
+ t2_cb (EV_P_ ev_timer *w, int revents)
+ {
+ struct my_biggy big = (struct my_biggy *)
+ (((char *)w) - offsetof (struct my_biggy, t2));
+ }
+
+=head2 MODEL/NESTED EVENT LOOP INVOCATIONS AND EXIT CONDITIONS
+
+Often (especially in GUI toolkits) there are places where you have
+I<modal> interaction, which is most easily implemented by recursively
+invoking C<ev_run>.
+
+This brings the problem of exiting - a callback might want to finish the
+main C<ev_run> call, but not the nested one (e.g. user clicked "Quit", but
+a modal "Are you sure?" dialog is still waiting), or just the nested one
+and not the main one (e.g. user clocked "Ok" in a modal dialog), or some
+other combination: In these cases, C<ev_break> will not work alone.
+
+The solution is to maintain "break this loop" variable for each C<ev_run>
+invocation, and use a loop around C<ev_run> until the condition is
+triggered, using C<EVRUN_ONCE>:
+
+ // main loop
+ int exit_main_loop = 0;
+
+ while (!exit_main_loop)
+ ev_run (EV_DEFAULT_ EVRUN_ONCE);
+
+ // in a model watcher
+ int exit_nested_loop = 0;
+
+ while (!exit_nested_loop)
+ ev_run (EV_A_ EVRUN_ONCE);
+
+To exit from any of these loops, just set the corresponding exit variable:
+
+ // exit modal loop
+ exit_nested_loop = 1;
+
+ // exit main program, after modal loop is finished
+ exit_main_loop = 1;
+
+ // exit both
+ exit_main_loop = exit_nested_loop = 1;
+
+=head2 THREAD LOCKING EXAMPLE
+
+Here is a fictitious example of how to run an event loop in a different
+thread from where callbacks are being invoked and watchers are
+created/added/removed.
+
+For a real-world example, see the C<EV::Loop::Async> perl module,
+which uses exactly this technique (which is suited for many high-level
+languages).
+
+The example uses a pthread mutex to protect the loop data, a condition
+variable to wait for callback invocations, an async watcher to notify the
+event loop thread and an unspecified mechanism to wake up the main thread.
+
+First, you need to associate some data with the event loop:
+
+ typedef struct {
+ mutex_t lock; /* global loop lock */
+ ev_async async_w;
+ thread_t tid;
+ cond_t invoke_cv;
+ } userdata;
+
+ void prepare_loop (EV_P)
+ {
+ // for simplicity, we use a static userdata struct.
+ static userdata u;
+
+ ev_async_init (&u->async_w, async_cb);
+ ev_async_start (EV_A_ &u->async_w);
+
+ pthread_mutex_init (&u->lock, 0);
+ pthread_cond_init (&u->invoke_cv, 0);
+
+ // now associate this with the loop
+ ev_set_userdata (EV_A_ u);
+ ev_set_invoke_pending_cb (EV_A_ l_invoke);
+ ev_set_loop_release_cb (EV_A_ l_release, l_acquire);
+
+ // then create the thread running ev_run
+ pthread_create (&u->tid, 0, l_run, EV_A);
+ }
+
+The callback for the C<ev_async> watcher does nothing: the watcher is used
+solely to wake up the event loop so it takes notice of any new watchers
+that might have been added:
+
+ static void
+ async_cb (EV_P_ ev_async *w, int revents)
+ {
+ // just used for the side effects
+ }
+
+The C<l_release> and C<l_acquire> callbacks simply unlock/lock the mutex
+protecting the loop data, respectively.
+
+ static void
+ l_release (EV_P)
+ {
+ userdata *u = ev_userdata (EV_A);
+ pthread_mutex_unlock (&u->lock);
+ }
+
+ static void
+ l_acquire (EV_P)
+ {
+ userdata *u = ev_userdata (EV_A);
+ pthread_mutex_lock (&u->lock);
+ }
+
+The event loop thread first acquires the mutex, and then jumps straight
+into C<ev_run>:
+
+ void *
+ l_run (void *thr_arg)
+ {
+ struct ev_loop *loop = (struct ev_loop *)thr_arg;
+
+ l_acquire (EV_A);
+ pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
+ ev_run (EV_A_ 0);
+ l_release (EV_A);
+
+ return 0;
+ }
+
+Instead of invoking all pending watchers, the C<l_invoke> callback will
+signal the main thread via some unspecified mechanism (signals? pipe
+writes? C<Async::Interrupt>?) and then waits until all pending watchers
+have been called (in a while loop because a) spurious wakeups are possible
+and b) skipping inter-thread-communication when there are no pending
+watchers is very beneficial):
+
+ static void
+ l_invoke (EV_P)
+ {
+ userdata *u = ev_userdata (EV_A);
+
+ while (ev_pending_count (EV_A))
+ {
+ wake_up_other_thread_in_some_magic_or_not_so_magic_way ();
+ pthread_cond_wait (&u->invoke_cv, &u->lock);
+ }
+ }
+
+Now, whenever the main thread gets told to invoke pending watchers, it
+will grab the lock, call C<ev_invoke_pending> and then signal the loop
+thread to continue:
+
+ static void
+ real_invoke_pending (EV_P)
+ {
+ userdata *u = ev_userdata (EV_A);
+
+ pthread_mutex_lock (&u->lock);
+ ev_invoke_pending (EV_A);
+ pthread_cond_signal (&u->invoke_cv);
+ pthread_mutex_unlock (&u->lock);
+ }
+
+Whenever you want to start/stop a watcher or do other modifications to an
+event loop, you will now have to lock:
+
+ ev_timer timeout_watcher;
+ userdata *u = ev_userdata (EV_A);
+
+ ev_timer_init (&timeout_watcher, timeout_cb, 5.5, 0.);
+
+ pthread_mutex_lock (&u->lock);
+ ev_timer_start (EV_A_ &timeout_watcher);
+ ev_async_send (EV_A_ &u->async_w);
+ pthread_mutex_unlock (&u->lock);
+
+Note that sending the C<ev_async> watcher is required because otherwise
+an event loop currently blocking in the kernel will have no knowledge
+about the newly added timer. By waking up the loop it will pick up any new
+watchers in the next event loop iteration.
+
+=head2 THREADS, COROUTINES, CONTINUATIONS, QUEUES... INSTEAD OF CALLBACKS
+
+While the overhead of a callback that e.g. schedules a thread is small, it
+is still an overhead. If you embed libev, and your main usage is with some
+kind of threads or coroutines, you might want to customise libev so that
+doesn't need callbacks anymore.
+
+Imagine you have coroutines that you can switch to using a function
+C<switch_to (coro)>, that libev runs in a coroutine called C<libev_coro>
+and that due to some magic, the currently active coroutine is stored in a
+global called C<current_coro>. Then you can build your own "wait for libev
+event" primitive by changing C<EV_CB_DECLARE> and C<EV_CB_INVOKE> (note
+the differing C<;> conventions):
+
+ #define EV_CB_DECLARE(type) struct my_coro *cb;
+ #define EV_CB_INVOKE(watcher) switch_to ((watcher)->cb)
+
+That means instead of having a C callback function, you store the
+coroutine to switch to in each watcher, and instead of having libev call
+your callback, you instead have it switch to that coroutine.
+
+A coroutine might now wait for an event with a function called
+C<wait_for_event>. (the watcher needs to be started, as always, but it doesn't
+matter when, or whether the watcher is active or not when this function is
+called):
+
+ void
+ wait_for_event (ev_watcher *w)
+ {
+ ev_cb_set (w) = current_coro;
+ switch_to (libev_coro);
+ }
+
+That basically suspends the coroutine inside C<wait_for_event> and
+continues the libev coroutine, which, when appropriate, switches back to
+this or any other coroutine. I am sure if you sue this your own :)
+
+You can do similar tricks if you have, say, threads with an event queue -
+instead of storing a coroutine, you store the queue object and instead of
+switching to a coroutine, you push the watcher onto the queue and notify
+any waiters.
+
+To embed libev, see L<EMBEDDING>, but in short, it's easiest to create two
+files, F<my_ev.h> and F<my_ev.c> that include the respective libev files:
+
+ // my_ev.h
+ #define EV_CB_DECLARE(type) struct my_coro *cb;
+ #define EV_CB_INVOKE(watcher) switch_to ((watcher)->cb);
+ #include "../libev/ev.h"
+
+ // my_ev.c
+ #define EV_H "my_ev.h"
+ #include "../libev/ev.c"
+
+And then use F<my_ev.h> when you would normally use F<ev.h>, and compile
+F<my_ev.c> into your project. When properly specifying include paths, you
+can even use F<ev.h> as header file name directly.
+
+
+=head1 LIBEVENT EMULATION
+
+Libev offers a compatibility emulation layer for libevent. It cannot
+emulate the internals of libevent, so here are some usage hints:
+
+=over 4
+
+=item * Only the libevent-1.4.1-beta API is being emulated.
+
+This was the newest libevent version available when libev was implemented,
+and is still mostly unchanged in 2010.
+
+=item * Use it by including <event.h>, as usual.
+
+=item * The following members are fully supported: ev_base, ev_callback,
+ev_arg, ev_fd, ev_res, ev_events.
+
+=item * Avoid using ev_flags and the EVLIST_*-macros, while it is
+maintained by libev, it does not work exactly the same way as in libevent (consider
+it a private API).
+
+=item * Priorities are not currently supported. Initialising priorities
+will fail and all watchers will have the same priority, even though there
+is an ev_pri field.
+
+=item * In libevent, the last base created gets the signals, in libev, the
+base that registered the signal gets the signals.
+
+=item * Other members are not supported.
+
+=item * The libev emulation is I<not> ABI compatible to libevent, you need
+to use the libev header file and library.
+
+=back
+
+=head1 C++ SUPPORT
+
+Libev comes with some simplistic wrapper classes for C++ that mainly allow
+you to use some convenience methods to start/stop watchers and also change
+the callback model to a model using method callbacks on objects.
+
+To use it,
+
+ #include <ev++.h>
+
+This automatically includes F<ev.h> and puts all of its definitions (many
+of them macros) into the global namespace. All C++ specific things are
+put into the C<ev> namespace. It should support all the same embedding
+options as F<ev.h>, most notably C<EV_MULTIPLICITY>.
+
+Care has been taken to keep the overhead low. The only data member the C++
+classes add (compared to plain C-style watchers) is the event loop pointer
+that the watcher is associated with (or no additional members at all if
+you disable C<EV_MULTIPLICITY> when embedding libev).
+
+Currently, functions, static and non-static member functions and classes
+with C<operator ()> can be used as callbacks. Other types should be easy
+to add as long as they only need one additional pointer for context. If
+you need support for other types of functors please contact the author
+(preferably after implementing it).
+
+Here is a list of things available in the C<ev> namespace:
+
+=over 4
+
+=item C<ev::READ>, C<ev::WRITE> etc.
+
+These are just enum values with the same values as the C<EV_READ> etc.
+macros from F<ev.h>.
+
+=item C<ev::tstamp>, C<ev::now>
+
+Aliases to the same types/functions as with the C<ev_> prefix.
+
+=item C<ev::io>, C<ev::timer>, C<ev::periodic>, C<ev::idle>, C<ev::sig> etc.
+
+For each C<ev_TYPE> watcher in F<ev.h> there is a corresponding class of
+the same name in the C<ev> namespace, with the exception of C<ev_signal>
+which is called C<ev::sig> to avoid clashes with the C<signal> macro
+defines by many implementations.
+
+All of those classes have these methods:
+
+=over 4
+
+=item ev::TYPE::TYPE ()
+
+=item ev::TYPE::TYPE (loop)
+
+=item ev::TYPE::~TYPE
+
+The constructor (optionally) takes an event loop to associate the watcher
+with. If it is omitted, it will use C<EV_DEFAULT>.
+
+The constructor calls C<ev_init> for you, which means you have to call the
+C<set> method before starting it.
+
+It will not set a callback, however: You have to call the templated C<set>
+method to set a callback before you can start the watcher.
+
+(The reason why you have to use a method is a limitation in C++ which does
+not allow explicit template arguments for constructors).
+
+The destructor automatically stops the watcher if it is active.
+
+=item w->set<class, &class::method> (object *)
+
+This method sets the callback method to call. The method has to have a
+signature of C<void (*)(ev_TYPE &, int)>, it receives the watcher as
+first argument and the C<revents> as second. The object must be given as
+parameter and is stored in the C<data> member of the watcher.
+
+This method synthesizes efficient thunking code to call your method from
+the C callback that libev requires. If your compiler can inline your
+callback (i.e. it is visible to it at the place of the C<set> call and
+your compiler is good :), then the method will be fully inlined into the
+thunking function, making it as fast as a direct C callback.
+
+Example: simple class declaration and watcher initialisation
+
+ struct myclass
+ {
+ void io_cb (ev::io &w, int revents) { }
+ }
+
+ myclass obj;
+ ev::io iow;
+ iow.set <myclass, &myclass::io_cb> (&obj);
+
+=item w->set (object *)
+
+This is a variation of a method callback - leaving out the method to call
+will default the method to C<operator ()>, which makes it possible to use
+functor objects without having to manually specify the C<operator ()> all
+the time. Incidentally, you can then also leave out the template argument
+list.
+
+The C<operator ()> method prototype must be C<void operator ()(watcher &w,
+int revents)>.
+
+See the method-C<set> above for more details.
+
+Example: use a functor object as callback.
+
+ struct myfunctor
+ {
+ void operator() (ev::io &w, int revents)
+ {
+ ...
+ }
+ }
+
+ myfunctor f;
+
+ ev::io w;
+ w.set (&f);
+
+=item w->set<function> (void *data = 0)
+
+Also sets a callback, but uses a static method or plain function as
+callback. The optional C<data> argument will be stored in the watcher's
+C<data> member and is free for you to use.
+
+The prototype of the C<function> must be C<void (*)(ev::TYPE &w, int)>.
+
+See the method-C<set> above for more details.
+
+Example: Use a plain function as callback.
+
+ static void io_cb (ev::io &w, int revents) { }
+ iow.set <io_cb> ();
+
+=item w->set (loop)
+
+Associates a different C<struct ev_loop> with this watcher. You can only
+do this when the watcher is inactive (and not pending either).
+
+=item w->set ([arguments])
+
+Basically the same as C<ev_TYPE_set>, with the same arguments. Either this
+method or a suitable start method must be called at least once. Unlike the
+C counterpart, an active watcher gets automatically stopped and restarted
+when reconfiguring it with this method.
+
+=item w->start ()
+
+Starts the watcher. Note that there is no C<loop> argument, as the
+constructor already stores the event loop.
+
+=item w->start ([arguments])
+
+Instead of calling C<set> and C<start> methods separately, it is often
+convenient to wrap them in one call. Uses the same type of arguments as
+the configure C<set> method of the watcher.
+
+=item w->stop ()
+
+Stops the watcher if it is active. Again, no C<loop> argument.
+
+=item w->again () (C<ev::timer>, C<ev::periodic> only)
+
+For C<ev::timer> and C<ev::periodic>, this invokes the corresponding
+C<ev_TYPE_again> function.
+
+=item w->sweep () (C<ev::embed> only)
+
+Invokes C<ev_embed_sweep>.
+
+=item w->update () (C<ev::stat> only)
+
+Invokes C<ev_stat_stat>.
+
+=back
+
+=back
+
+Example: Define a class with two I/O and idle watchers, start the I/O
+watchers in the constructor.
+
+ class myclass
+ {
+ ev::io io ; void io_cb (ev::io &w, int revents);
+ ev::io2 io2 ; void io2_cb (ev::io &w, int revents);
+ ev::idle idle; void idle_cb (ev::idle &w, int revents);
+
+ myclass (int fd)
+ {
+ io .set <myclass, &myclass::io_cb > (this);
+ io2 .set <myclass, &myclass::io2_cb > (this);
+ idle.set <myclass, &myclass::idle_cb> (this);
+
+ io.set (fd, ev::WRITE); // configure the watcher
+ io.start (); // start it whenever convenient
+
+ io2.start (fd, ev::READ); // set + start in one call
+ }
+ };
+
+
+=head1 OTHER LANGUAGE BINDINGS
+
+Libev does not offer other language bindings itself, but bindings for a
+number of languages exist in the form of third-party packages. If you know
+any interesting language binding in addition to the ones listed here, drop
+me a note.
+
+=over 4
+
+=item Perl
+
+The EV module implements the full libev API and is actually used to test
+libev. EV is developed together with libev. Apart from the EV core module,
+there are additional modules that implement libev-compatible interfaces
+to C<libadns> (C<EV::ADNS>, but C<AnyEvent::DNS> is preferred nowadays),
+C<Net::SNMP> (C<Net::SNMP::EV>) and the C<libglib> event core (C<Glib::EV>
+and C<EV::Glib>).
+
+It can be found and installed via CPAN, its homepage is at
+L<http://software.schmorp.de/pkg/EV>.
+
+=item Python
+
+Python bindings can be found at L<http://code.google.com/p/pyev/>. It
+seems to be quite complete and well-documented.
+
+=item Ruby
+
+Tony Arcieri has written a ruby extension that offers access to a subset
+of the libev API and adds file handle abstractions, asynchronous DNS and
+more on top of it. It can be found via gem servers. Its homepage is at
+L<http://rev.rubyforge.org/>.
+
+Roger Pack reports that using the link order C<-lws2_32 -lmsvcrt-ruby-190>
+makes rev work even on mingw.
+
+=item Haskell
+
+A haskell binding to libev is available at
+L<http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hlibev>.
+
+=item D
+
+Leandro Lucarella has written a D language binding (F<ev.d>) for libev, to
+be found at L<http://proj.llucax.com.ar/wiki/evd>.
+
+=item Ocaml
+
+Erkki Seppala has written Ocaml bindings for libev, to be found at
+L<http://modeemi.cs.tut.fi/~flux/software/ocaml-ev/>.
+
+=item Lua
+
+Brian Maher has written a partial interface to libev for lua (at the
+time of this writing, only C<ev_io> and C<ev_timer>), to be found at
+L<http://github.com/brimworks/lua-ev>.
+
+=back
+
+
+=head1 MACRO MAGIC
+
+Libev can be compiled with a variety of options, the most fundamental
+of which is C<EV_MULTIPLICITY>. This option determines whether (most)
+functions and callbacks have an initial C<struct ev_loop *> argument.
+
+To make it easier to write programs that cope with either variant, the
+following macros are defined:
+
+=over 4
+
+=item C<EV_A>, C<EV_A_>
+
+This provides the loop I<argument> for functions, if one is required ("ev
+loop argument"). The C<EV_A> form is used when this is the sole argument,
+C<EV_A_> is used when other arguments are following. Example:
+
+ ev_unref (EV_A);
+ ev_timer_add (EV_A_ watcher);
+ ev_run (EV_A_ 0);
+
+It assumes the variable C<loop> of type C<struct ev_loop *> is in scope,
+which is often provided by the following macro.
+
+=item C<EV_P>, C<EV_P_>
+
+This provides the loop I<parameter> for functions, if one is required ("ev
+loop parameter"). The C<EV_P> form is used when this is the sole parameter,
+C<EV_P_> is used when other parameters are following. Example:
+
+ // this is how ev_unref is being declared
+ static void ev_unref (EV_P);
+
+ // this is how you can declare your typical callback
+ static void cb (EV_P_ ev_timer *w, int revents)
+
+It declares a parameter C<loop> of type C<struct ev_loop *>, quite
+suitable for use with C<EV_A>.
+
+=item C<EV_DEFAULT>, C<EV_DEFAULT_>
+
+Similar to the other two macros, this gives you the value of the default
+loop, if multiple loops are supported ("ev loop default").
+
+=item C<EV_DEFAULT_UC>, C<EV_DEFAULT_UC_>
+
+Usage identical to C<EV_DEFAULT> and C<EV_DEFAULT_>, but requires that the
+default loop has been initialised (C<UC> == unchecked). Their behaviour
+is undefined when the default loop has not been initialised by a previous
+execution of C<EV_DEFAULT>, C<EV_DEFAULT_> or C<ev_default_init (...)>.
+
+It is often prudent to use C<EV_DEFAULT> when initialising the first
+watcher in a function but use C<EV_DEFAULT_UC> afterwards.
+
+=back
+
+Example: Declare and initialise a check watcher, utilising the above
+macros so it will work regardless of whether multiple loops are supported
+or not.
+
+ static void
+ check_cb (EV_P_ ev_timer *w, int revents)
+ {
+ ev_check_stop (EV_A_ w);
+ }
+
+ ev_check check;
+ ev_check_init (&check, check_cb);
+ ev_check_start (EV_DEFAULT_ &check);
+ ev_run (EV_DEFAULT_ 0);
+
+=head1 EMBEDDING
+
+Libev can (and often is) directly embedded into host
+applications. Examples of applications that embed it include the Deliantra
+Game Server, the EV perl module, the GNU Virtual Private Ethernet (gvpe)
+and rxvt-unicode.
+
+The goal is to enable you to just copy the necessary files into your
+source directory without having to change even a single line in them, so
+you can easily upgrade by simply copying (or having a checked-out copy of
+libev somewhere in your source tree).
+
+=head2 FILESETS
+
+Depending on what features you need you need to include one or more sets of files
+in your application.
+
+=head3 CORE EVENT LOOP
+
+To include only the libev core (all the C<ev_*> functions), with manual
+configuration (no autoconf):
+
+ #define EV_STANDALONE 1
+ #include "ev.c"
+
+This will automatically include F<ev.h>, too, and should be done in a
+single C source file only to provide the function implementations. To use
+it, do the same for F<ev.h> in all files wishing to use this API (best
+done by writing a wrapper around F<ev.h> that you can include instead and
+where you can put other configuration options):
+
+ #define EV_STANDALONE 1
+ #include "ev.h"
+
+Both header files and implementation files can be compiled with a C++
+compiler (at least, that's a stated goal, and breakage will be treated
+as a bug).
+
+You need the following files in your source tree, or in a directory
+in your include path (e.g. in libev/ when using -Ilibev):
+
+ ev.h
+ ev.c
+ ev_vars.h
+ ev_wrap.h
+
+ ev_win32.c required on win32 platforms only
+
+ ev_select.c only when select backend is enabled (which is enabled by default)
+ ev_poll.c only when poll backend is enabled (disabled by default)
+ ev_epoll.c only when the epoll backend is enabled (disabled by default)
+ ev_kqueue.c only when the kqueue backend is enabled (disabled by default)
+ ev_port.c only when the solaris port backend is enabled (disabled by default)
+
+F<ev.c> includes the backend files directly when enabled, so you only need
+to compile this single file.
+
+=head3 LIBEVENT COMPATIBILITY API
+
+To include the libevent compatibility API, also include:
+
+ #include "event.c"
+
+in the file including F<ev.c>, and:
+
+ #include "event.h"
+
+in the files that want to use the libevent API. This also includes F<ev.h>.
+
+You need the following additional files for this:
+
+ event.h
+ event.c
+
+=head3 AUTOCONF SUPPORT
+
+Instead of using C<EV_STANDALONE=1> and providing your configuration in
+whatever way you want, you can also C<m4_include([libev.m4])> in your
+F<configure.ac> and leave C<EV_STANDALONE> undefined. F<ev.c> will then
+include F<config.h> and configure itself accordingly.
+
+For this of course you need the m4 file:
+
+ libev.m4
+
+=head2 PREPROCESSOR SYMBOLS/MACROS
+
+Libev can be configured via a variety of preprocessor symbols you have to
+define before including (or compiling) any of its files. The default in
+the absence of autoconf is documented for every option.
+
+Symbols marked with "(h)" do not change the ABI, and can have different
+values when compiling libev vs. including F<ev.h>, so it is permissible
+to redefine them before including F<ev.h> without breaking compatibility
+to a compiled library. All other symbols change the ABI, which means all
+users of libev and the libev code itself must be compiled with compatible
+settings.
+
+=over 4
+
+=item EV_COMPAT3 (h)
+
+Backwards compatibility is a major concern for libev. This is why this
+release of libev comes with wrappers for the functions and symbols that
+have been renamed between libev version 3 and 4.
+
+You can disable these wrappers (to test compatibility with future
+versions) by defining C<EV_COMPAT3> to C<0> when compiling your
+sources. This has the additional advantage that you can drop the C<struct>
+from C<struct ev_loop> declarations, as libev will provide an C<ev_loop>
+typedef in that case.
+
+In some future version, the default for C<EV_COMPAT3> will become C<0>,
+and in some even more future version the compatibility code will be
+removed completely.
+
+=item EV_STANDALONE (h)
+
+Must always be C<1> if you do not use autoconf configuration, which
+keeps libev from including F<config.h>, and it also defines dummy
+implementations for some libevent functions (such as logging, which is not
+supported). It will also not define any of the structs usually found in
+F<event.h> that are not directly supported by the libev core alone.
+
+In standalone mode, libev will still try to automatically deduce the
+configuration, but has to be more conservative.
+
+=item EV_USE_MONOTONIC
+
+If defined to be C<1>, libev will try to detect the availability of the
+monotonic clock option at both compile time and runtime. Otherwise no
+use of the monotonic clock option will be attempted. If you enable this,
+you usually have to link against librt or something similar. Enabling it
+when the functionality isn't available is safe, though, although you have
+to make sure you link against any libraries where the C<clock_gettime>
+function is hiding in (often F<-lrt>). See also C<EV_USE_CLOCK_SYSCALL>.
+
+=item EV_USE_REALTIME
+
+If defined to be C<1>, libev will try to detect the availability of the
+real-time clock option at compile time (and assume its availability
+at runtime if successful). Otherwise no use of the real-time clock
+option will be attempted. This effectively replaces C<gettimeofday>
+by C<clock_get (CLOCK_REALTIME, ...)> and will not normally affect
+correctness. See the note about libraries in the description of
+C<EV_USE_MONOTONIC>, though. Defaults to the opposite value of
+C<EV_USE_CLOCK_SYSCALL>.
+
+=item EV_USE_CLOCK_SYSCALL
+
+If defined to be C<1>, libev will try to use a direct syscall instead
+of calling the system-provided C<clock_gettime> function. This option
+exists because on GNU/Linux, C<clock_gettime> is in C<librt>, but C<librt>
+unconditionally pulls in C<libpthread>, slowing down single-threaded
+programs needlessly. Using a direct syscall is slightly slower (in
+theory), because no optimised vdso implementation can be used, but avoids
+the pthread dependency. Defaults to C<1> on GNU/Linux with glibc 2.x or
+higher, as it simplifies linking (no need for C<-lrt>).
+
+=item EV_USE_NANOSLEEP
+
+If defined to be C<1>, libev will assume that C<nanosleep ()> is available
+and will use it for delays. Otherwise it will use C<select ()>.
+
+=item EV_USE_EVENTFD
+
+If defined to be C<1>, then libev will assume that C<eventfd ()> is
+available and will probe for kernel support at runtime. This will improve
+C<ev_signal> and C<ev_async> performance and reduce resource consumption.
+If undefined, it will be enabled if the headers indicate GNU/Linux + Glibc
+2.7 or newer, otherwise disabled.
+
+=item EV_USE_SELECT
+
+If undefined or defined to be C<1>, libev will compile in support for the
+C<select>(2) backend. No attempt at auto-detection will be done: if no
+other method takes over, select will be it. Otherwise the select backend
+will not be compiled in.
+
+=item EV_SELECT_USE_FD_SET
+
+If defined to C<1>, then the select backend will use the system C<fd_set>
+structure. This is useful if libev doesn't compile due to a missing
+C<NFDBITS> or C<fd_mask> definition or it mis-guesses the bitset layout
+on exotic systems. This usually limits the range of file descriptors to
+some low limit such as 1024 or might have other limitations (winsocket
+only allows 64 sockets). The C<FD_SETSIZE> macro, set before compilation,
+configures the maximum size of the C<fd_set>.
+
+=item EV_SELECT_IS_WINSOCKET
+
+When defined to C<1>, the select backend will assume that
+select/socket/connect etc. don't understand file descriptors but
+wants osf handles on win32 (this is the case when the select to
+be used is the winsock select). This means that it will call
+C<_get_osfhandle> on the fd to convert it to an OS handle. Otherwise,
+it is assumed that all these functions actually work on fds, even
+on win32. Should not be defined on non-win32 platforms.
+
+=item EV_FD_TO_WIN32_HANDLE(fd)
+
+If C<EV_SELECT_IS_WINSOCKET> is enabled, then libev needs a way to map
+file descriptors to socket handles. When not defining this symbol (the
+default), then libev will call C<_get_osfhandle>, which is usually
+correct. In some cases, programs use their own file descriptor management,
+in which case they can provide this function to map fds to socket handles.
+
+=item EV_WIN32_HANDLE_TO_FD(handle)
+
+If C<EV_SELECT_IS_WINSOCKET> then libev maps handles to file descriptors
+using the standard C<_open_osfhandle> function. For programs implementing
+their own fd to handle mapping, overwriting this function makes it easier
+to do so. This can be done by defining this macro to an appropriate value.
+
+=item EV_WIN32_CLOSE_FD(fd)
+
+If programs implement their own fd to handle mapping on win32, then this
+macro can be used to override the C<close> function, useful to unregister
+file descriptors again. Note that the replacement function has to close
+the underlying OS handle.
+
+=item EV_USE_POLL
+
+If defined to be C<1>, libev will compile in support for the C<poll>(2)
+backend. Otherwise it will be enabled on non-win32 platforms. It
+takes precedence over select.
+
+=item EV_USE_EPOLL
+
+If defined to be C<1>, libev will compile in support for the Linux
+C<epoll>(7) backend. Its availability will be detected at runtime,
+otherwise another method will be used as fallback. This is the preferred
+backend for GNU/Linux systems. If undefined, it will be enabled if the
+headers indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled.
+
+=item EV_USE_KQUEUE
+
+If defined to be C<1>, libev will compile in support for the BSD style
+C<kqueue>(2) backend. Its actual availability will be detected at runtime,
+otherwise another method will be used as fallback. This is the preferred
+backend for BSD and BSD-like systems, although on most BSDs kqueue only
+supports some types of fds correctly (the only platform we found that
+supports ptys for example was NetBSD), so kqueue might be compiled in, but
+not be used unless explicitly requested. The best way to use it is to find
+out whether kqueue supports your type of fd properly and use an embedded
+kqueue loop.
+
+=item EV_USE_PORT
+
+If defined to be C<1>, libev will compile in support for the Solaris
+10 port style backend. Its availability will be detected at runtime,
+otherwise another method will be used as fallback. This is the preferred
+backend for Solaris 10 systems.
+
+=item EV_USE_DEVPOLL
+
+Reserved for future expansion, works like the USE symbols above.
+
+=item EV_USE_INOTIFY
+
+If defined to be C<1>, libev will compile in support for the Linux inotify
+interface to speed up C<ev_stat> watchers. Its actual availability will
+be detected at runtime. If undefined, it will be enabled if the headers
+indicate GNU/Linux + Glibc 2.4 or newer, otherwise disabled.
+
+=item EV_ATOMIC_T
+
+Libev requires an integer type (suitable for storing C<0> or C<1>) whose
+access is atomic with respect to other threads or signal contexts. No such
+type is easily found in the C language, so you can provide your own type
+that you know is safe for your purposes. It is used both for signal handler "locking"
+as well as for signal and thread safety in C<ev_async> watchers.
+
+In the absence of this define, libev will use C<sig_atomic_t volatile>
+(from F<signal.h>), which is usually good enough on most platforms.
+
+=item EV_H (h)
+
+The name of the F<ev.h> header file used to include it. The default if
+undefined is C<"ev.h"> in F<event.h>, F<ev.c> and F<ev++.h>. This can be
+used to virtually rename the F<ev.h> header file in case of conflicts.
+
+=item EV_CONFIG_H (h)
+
+If C<EV_STANDALONE> isn't C<1>, this variable can be used to override
+F<ev.c>'s idea of where to find the F<config.h> file, similarly to
+C<EV_H>, above.
+
+=item EV_EVENT_H (h)
+
+Similarly to C<EV_H>, this macro can be used to override F<event.c>'s idea
+of how the F<event.h> header can be found, the default is C<"event.h">.
+
+=item EV_PROTOTYPES (h)
+
+If defined to be C<0>, then F<ev.h> will not define any function
+prototypes, but still define all the structs and other symbols. This is
+occasionally useful if you want to provide your own wrapper functions
+around libev functions.
+
+=item EV_MULTIPLICITY
+
+If undefined or defined to C<1>, then all event-loop-specific functions
+will have the C<struct ev_loop *> as first argument, and you can create
+additional independent event loops. Otherwise there will be no support
+for multiple event loops and there is no first event loop pointer
+argument. Instead, all functions act on the single default loop.
+
+=item EV_MINPRI
+
+=item EV_MAXPRI
+
+The range of allowed priorities. C<EV_MINPRI> must be smaller or equal to
+C<EV_MAXPRI>, but otherwise there are no non-obvious limitations. You can
+provide for more priorities by overriding those symbols (usually defined
+to be C<-2> and C<2>, respectively).
+
+When doing priority-based operations, libev usually has to linearly search
+all the priorities, so having many of them (hundreds) uses a lot of space
+and time, so using the defaults of five priorities (-2 .. +2) is usually
+fine.
+
+If your embedding application does not need any priorities, defining these
+both to C<0> will save some memory and CPU.
+
+=item EV_PERIODIC_ENABLE, EV_IDLE_ENABLE, EV_EMBED_ENABLE, EV_STAT_ENABLE,
+EV_PREPARE_ENABLE, EV_CHECK_ENABLE, EV_FORK_ENABLE, EV_SIGNAL_ENABLE,
+EV_ASYNC_ENABLE, EV_CHILD_ENABLE.
+
+If undefined or defined to be C<1> (and the platform supports it), then
+the respective watcher type is supported. If defined to be C<0>, then it
+is not. Disabling watcher types mainly saves code size.
+
+=item EV_FEATURES
+
+If you need to shave off some kilobytes of code at the expense of some
+speed (but with the full API), you can define this symbol to request
+certain subsets of functionality. The default is to enable all features
+that can be enabled on the platform.
+
+A typical way to use this symbol is to define it to C<0> (or to a bitset
+with some broad features you want) and then selectively re-enable
+additional parts you want, for example if you want everything minimal,
+but multiple event loop support, async and child watchers and the poll
+backend, use this:
+
+ #define EV_FEATURES 0
+ #define EV_MULTIPLICITY 1
+ #define EV_USE_POLL 1
+ #define EV_CHILD_ENABLE 1
+ #define EV_ASYNC_ENABLE 1
+
+The actual value is a bitset, it can be a combination of the following
+values:
+
+=over 4
+
+=item C<1> - faster/larger code
+
+Use larger code to speed up some operations.
+
+Currently this is used to override some inlining decisions (enlarging the
+code size by roughly 30% on amd64).
+
+When optimising for size, use of compiler flags such as C<-Os> with
+gcc is recommended, as well as C<-DNDEBUG>, as libev contains a number of
+assertions.
+
+=item C<2> - faster/larger data structures
+
+Replaces the small 2-heap for timer management by a faster 4-heap, larger
+hash table sizes and so on. This will usually further increase code size
+and can additionally have an effect on the size of data structures at
+runtime.
+
+=item C<4> - full API configuration
+
+This enables priorities (sets C<EV_MAXPRI>=2 and C<EV_MINPRI>=-2), and
+enables multiplicity (C<EV_MULTIPLICITY>=1).
+
+=item C<8> - full API
+
+This enables a lot of the "lesser used" API functions. See C<ev.h> for
+details on which parts of the API are still available without this
+feature, and do not complain if this subset changes over time.
+
+=item C<16> - enable all optional watcher types
+
+Enables all optional watcher types. If you want to selectively enable
+only some watcher types other than I/O and timers (e.g. prepare,
+embed, async, child...) you can enable them manually by defining
+C<EV_watchertype_ENABLE> to C<1> instead.
+
+=item C<32> - enable all backends
+
+This enables all backends - without this feature, you need to enable at
+least one backend manually (C<EV_USE_SELECT> is a good choice).
+
+=item C<64> - enable OS-specific "helper" APIs
+
+Enable inotify, eventfd, signalfd and similar OS-specific helper APIs by
+default.
+
+=back
+
+Compiling with C<gcc -Os -DEV_STANDALONE -DEV_USE_EPOLL=1 -DEV_FEATURES=0>
+reduces the compiled size of libev from 24.7Kb code/2.8Kb data to 6.5Kb
+code/0.3Kb data on my GNU/Linux amd64 system, while still giving you I/O
+watchers, timers and monotonic clock support.
+
+With an intelligent-enough linker (gcc+binutils are intelligent enough
+when you use C<-Wl,--gc-sections -ffunction-sections>) functions unused by
+your program might be left out as well - a binary starting a timer and an
+I/O watcher then might come out at only 5Kb.
+
+=item EV_AVOID_STDIO
+
+If this is set to C<1> at compiletime, then libev will avoid using stdio
+functions (printf, scanf, perror etc.). This will increase the code size
+somewhat, but if your program doesn't otherwise depend on stdio and your
+libc allows it, this avoids linking in the stdio library which is quite
+big.
+
+Note that error messages might become less precise when this option is
+enabled.
+
+=item EV_NSIG
+
+The highest supported signal number, +1 (or, the number of
+signals): Normally, libev tries to deduce the maximum number of signals
+automatically, but sometimes this fails, in which case it can be
+specified. Also, using a lower number than detected (C<32> should be
+good for about any system in existence) can save some memory, as libev
+statically allocates some 12-24 bytes per signal number.
+
+=item EV_PID_HASHSIZE
+
+C<ev_child> watchers use a small hash table to distribute workload by
+pid. The default size is C<16> (or C<1> with C<EV_FEATURES> disabled),
+usually more than enough. If you need to manage thousands of children you
+might want to increase this value (I<must> be a power of two).
+
+=item EV_INOTIFY_HASHSIZE
+
+C<ev_stat> watchers use a small hash table to distribute workload by
+inotify watch id. The default size is C<16> (or C<1> with C<EV_FEATURES>
+disabled), usually more than enough. If you need to manage thousands of
+C<ev_stat> watchers you might want to increase this value (I<must> be a
+power of two).
+
+=item EV_USE_4HEAP
+
+Heaps are not very cache-efficient. To improve the cache-efficiency of the
+timer and periodics heaps, libev uses a 4-heap when this symbol is defined
+to C<1>. The 4-heap uses more complicated (longer) code but has noticeably
+faster performance with many (thousands) of watchers.
+
+The default is C<1>, unless C<EV_FEATURES> overrides it, in which case it
+will be C<0>.
+
+=item EV_HEAP_CACHE_AT
+
+Heaps are not very cache-efficient. To improve the cache-efficiency of the
+timer and periodics heaps, libev can cache the timestamp (I<at>) within
+the heap structure (selected by defining C<EV_HEAP_CACHE_AT> to C<1>),
+which uses 8-12 bytes more per watcher and a few hundred bytes more code,
+but avoids random read accesses on heap changes. This improves performance
+noticeably with many (hundreds) of watchers.
+
+The default is C<1>, unless C<EV_FEATURES> overrides it, in which case it
+will be C<0>.
+
+=item EV_VERIFY
+
+Controls how much internal verification (see C<ev_verify ()>) will
+be done: If set to C<0>, no internal verification code will be compiled
+in. If set to C<1>, then verification code will be compiled in, but not
+called. If set to C<2>, then the internal verification code will be
+called once per loop, which can slow down libev. If set to C<3>, then the
+verification code will be called very frequently, which will slow down
+libev considerably.
+
+The default is C<1>, unless C<EV_FEATURES> overrides it, in which case it
+will be C<0>.
+
+=item EV_COMMON
+
+By default, all watchers have a C<void *data> member. By redefining
+this macro to something else you can include more and other types of
+members. You have to define it each time you include one of the files,
+though, and it must be identical each time.
+
+For example, the perl EV module uses something like this:
+
+ #define EV_COMMON \
+ SV *self; /* contains this struct */ \
+ SV *cb_sv, *fh /* note no trailing ";" */
+
+=item EV_CB_DECLARE (type)
+
+=item EV_CB_INVOKE (watcher, revents)
+
+=item ev_set_cb (ev, cb)
+
+Can be used to change the callback member declaration in each watcher,
+and the way callbacks are invoked and set. Must expand to a struct member
+definition and a statement, respectively. See the F<ev.h> header file for
+their default definitions. One possible use for overriding these is to
+avoid the C<struct ev_loop *> as first argument in all cases, or to use
+method calls instead of plain function calls in C++.
+
+=back
+
+=head2 EXPORTED API SYMBOLS
+
+If you need to re-export the API (e.g. via a DLL) and you need a list of
+exported symbols, you can use the provided F<Symbol.*> files which list
+all public symbols, one per line:
+
+ Symbols.ev for libev proper
+ Symbols.event for the libevent emulation
+
+This can also be used to rename all public symbols to avoid clashes with
+multiple versions of libev linked together (which is obviously bad in
+itself, but sometimes it is inconvenient to avoid this).
+
+A sed command like this will create wrapper C<#define>'s that you need to
+include before including F<ev.h>:
+
+ <Symbols.ev sed -e "s/.*/#define & myprefix_&/" >wrap.h
+
+This would create a file F<wrap.h> which essentially looks like this:
+
+ #define ev_backend myprefix_ev_backend
+ #define ev_check_start myprefix_ev_check_start
+ #define ev_check_stop myprefix_ev_check_stop
+ ...
+
+=head2 EXAMPLES
+
+For a real-world example of a program the includes libev
+verbatim, you can have a look at the EV perl module
+(L<http://software.schmorp.de/pkg/EV.html>). It has the libev files in
+the F<libev/> subdirectory and includes them in the F<EV/EVAPI.h> (public
+interface) and F<EV.xs> (implementation) files. Only the F<EV.xs> file
+will be compiled. It is pretty complex because it provides its own header
+file.
+
+The usage in rxvt-unicode is simpler. It has a F<ev_cpp.h> header file
+that everybody includes and which overrides some configure choices:
+
+ #define EV_FEATURES 8
+ #define EV_USE_SELECT 1
+ #define EV_PREPARE_ENABLE 1
+ #define EV_IDLE_ENABLE 1
+ #define EV_SIGNAL_ENABLE 1
+ #define EV_CHILD_ENABLE 1
+ #define EV_USE_STDEXCEPT 0
+ #define EV_CONFIG_H <config.h>
+
+ #include "ev++.h"
+
+And a F<ev_cpp.C> implementation file that contains libev proper and is compiled:
+
+ #include "ev_cpp.h"
+ #include "ev.c"
+
+=head1 INTERACTION WITH OTHER PROGRAMS, LIBRARIES OR THE ENVIRONMENT
+
+=head2 THREADS AND COROUTINES
+
+=head3 THREADS
+
+All libev functions are reentrant and thread-safe unless explicitly
+documented otherwise, but libev implements no locking itself. This means
+that you can use as many loops as you want in parallel, as long as there
+are no concurrent calls into any libev function with the same loop
+parameter (C<ev_default_*> calls have an implicit default loop parameter,
+of course): libev guarantees that different event loops share no data
+structures that need any locking.
+
+Or to put it differently: calls with different loop parameters can be done
+concurrently from multiple threads, calls with the same loop parameter
+must be done serially (but can be done from different threads, as long as
+only one thread ever is inside a call at any point in time, e.g. by using
+a mutex per loop).
+
+Specifically to support threads (and signal handlers), libev implements
+so-called C<ev_async> watchers, which allow some limited form of
+concurrency on the same event loop, namely waking it up "from the
+outside".
+
+If you want to know which design (one loop, locking, or multiple loops
+without or something else still) is best for your problem, then I cannot
+help you, but here is some generic advice:
+
+=over 4
+
+=item * most applications have a main thread: use the default libev loop
+in that thread, or create a separate thread running only the default loop.
+
+This helps integrating other libraries or software modules that use libev
+themselves and don't care/know about threading.
+
+=item * one loop per thread is usually a good model.
+
+Doing this is almost never wrong, sometimes a better-performance model
+exists, but it is always a good start.
+
+=item * other models exist, such as the leader/follower pattern, where one
+loop is handed through multiple threads in a kind of round-robin fashion.
+
+Choosing a model is hard - look around, learn, know that usually you can do
+better than you currently do :-)
+
+=item * often you need to talk to some other thread which blocks in the
+event loop.
+
+C<ev_async> watchers can be used to wake them up from other threads safely
+(or from signal contexts...).
+
+An example use would be to communicate signals or other events that only
+work in the default loop by registering the signal watcher with the
+default loop and triggering an C<ev_async> watcher from the default loop
+watcher callback into the event loop interested in the signal.
+
+=back
+
+See also L<THREAD LOCKING EXAMPLE>.
+
+=head3 COROUTINES
+
+Libev is very accommodating to coroutines ("cooperative threads"):
+libev fully supports nesting calls to its functions from different
+coroutines (e.g. you can call C<ev_run> on the same loop from two
+different coroutines, and switch freely between both coroutines running
+the loop, as long as you don't confuse yourself). The only exception is
+that you must not do this from C<ev_periodic> reschedule callbacks.
+
+Care has been taken to ensure that libev does not keep local state inside
+C<ev_run>, and other calls do not usually allow for coroutine switches as
+they do not call any callbacks.
+
+=head2 COMPILER WARNINGS
+
+Depending on your compiler and compiler settings, you might get no or a
+lot of warnings when compiling libev code. Some people are apparently
+scared by this.
+
+However, these are unavoidable for many reasons. For one, each compiler
+has different warnings, and each user has different tastes regarding
+warning options. "Warn-free" code therefore cannot be a goal except when
+targeting a specific compiler and compiler-version.
+
+Another reason is that some compiler warnings require elaborate
+workarounds, or other changes to the code that make it less clear and less
+maintainable.
+
+And of course, some compiler warnings are just plain stupid, or simply
+wrong (because they don't actually warn about the condition their message
+seems to warn about). For example, certain older gcc versions had some
+warnings that resulted in an extreme number of false positives. These have
+been fixed, but some people still insist on making code warn-free with
+such buggy versions.
+
+While libev is written to generate as few warnings as possible,
+"warn-free" code is not a goal, and it is recommended not to build libev
+with any compiler warnings enabled unless you are prepared to cope with
+them (e.g. by ignoring them). Remember that warnings are just that:
+warnings, not errors, or proof of bugs.
+
+
+=head2 VALGRIND
+
+Valgrind has a special section here because it is a popular tool that is
+highly useful. Unfortunately, valgrind reports are very hard to interpret.
+
+If you think you found a bug (memory leak, uninitialised data access etc.)
+in libev, then check twice: If valgrind reports something like:
+
+ ==2274== definitely lost: 0 bytes in 0 blocks.
+ ==2274== possibly lost: 0 bytes in 0 blocks.
+ ==2274== still reachable: 256 bytes in 1 blocks.
+
+Then there is no memory leak, just as memory accounted to global variables
+is not a memleak - the memory is still being referenced, and didn't leak.
+
+Similarly, under some circumstances, valgrind might report kernel bugs
+as if it were a bug in libev (e.g. in realloc or in the poll backend,
+although an acceptable workaround has been found here), or it might be
+confused.
+
+Keep in mind that valgrind is a very good tool, but only a tool. Don't
+make it into some kind of religion.
+
+If you are unsure about something, feel free to contact the mailing list
+with the full valgrind report and an explanation on why you think this
+is a bug in libev (best check the archives, too :). However, don't be
+annoyed when you get a brisk "this is no bug" answer and take the chance
+of learning how to interpret valgrind properly.
+
+If you need, for some reason, empty reports from valgrind for your project
+I suggest using suppression lists.
+
+
+=head1 PORTABILITY NOTES
+
+=head2 GNU/LINUX 32 BIT LIMITATIONS
+
+GNU/Linux is the only common platform that supports 64 bit file/large file
+interfaces but I<disables> them by default.
+
+That means that libev compiled in the default environment doesn't support
+files larger than 2GiB or so, which mainly affects C<ev_stat> watchers.
+
+Unfortunately, many programs try to work around this GNU/Linux issue
+by enabling the large file API, which makes them incompatible with the
+standard libev compiled for their system.
+
+Likewise, libev cannot enable the large file API itself as this would
+suddenly make it incompatible to the default compile time environment,
+i.e. all programs not using special compile switches.
+
+=head2 OS/X AND DARWIN BUGS
+
+The whole thing is a bug if you ask me - basically any system interface
+you touch is broken, whether it is locales, poll, kqueue or even the
+OpenGL drivers.
+
+=head3 C<kqueue> is buggy
+
+The kqueue syscall is broken in all known versions - most versions support
+only sockets, many support pipes.
+
+Libev tries to work around this by not using C<kqueue> by default on this
+rotten platform, but of course you can still ask for it when creating a
+loop - embedding a socket-only kqueue loop into a select-based one is
+probably going to work well.
+
+=head3 C<poll> is buggy
+
+Instead of fixing C<kqueue>, Apple replaced their (working) C<poll>
+implementation by something calling C<kqueue> internally around the 10.5.6
+release, so now C<kqueue> I<and> C<poll> are broken.
+
+Libev tries to work around this by not using C<poll> by default on
+this rotten platform, but of course you can still ask for it when creating
+a loop.
+
+=head3 C<select> is buggy
+
+All that's left is C<select>, and of course Apple found a way to fuck this
+one up as well: On OS/X, C<select> actively limits the number of file
+descriptors you can pass in to 1024 - your program suddenly crashes when
+you use more.
+
+There is an undocumented "workaround" for this - defining
+C<_DARWIN_UNLIMITED_SELECT>, which libev tries to use, so select I<should>
+work on OS/X.
+
+=head2 SOLARIS PROBLEMS AND WORKAROUNDS
+
+=head3 C<errno> reentrancy
+
+The default compile environment on Solaris is unfortunately so
+thread-unsafe that you can't even use components/libraries compiled
+without C<-D_REENTRANT> in a threaded program, which, of course, isn't
+defined by default. A valid, if stupid, implementation choice.
+
+If you want to use libev in threaded environments you have to make sure
+it's compiled with C<_REENTRANT> defined.
+
+=head3 Event port backend
+
+The scalable event interface for Solaris is called "event
+ports". Unfortunately, this mechanism is very buggy in all major
+releases. If you run into high CPU usage, your program freezes or you get
+a large number of spurious wakeups, make sure you have all the relevant
+and latest kernel patches applied. No, I don't know which ones, but there
+are multiple ones to apply, and afterwards, event ports actually work
+great.
+
+If you can't get it to work, you can try running the program by setting
+the environment variable C<LIBEV_FLAGS=3> to only allow C<poll> and
+C<select> backends.
+
+=head2 AIX POLL BUG
+
+AIX unfortunately has a broken C<poll.h> header. Libev works around
+this by trying to avoid the poll backend altogether (i.e. it's not even
+compiled in), which normally isn't a big problem as C<select> works fine
+with large bitsets on AIX, and AIX is dead anyway.
+
+=head2 WIN32 PLATFORM LIMITATIONS AND WORKAROUNDS
+
+=head3 General issues
+
+Win32 doesn't support any of the standards (e.g. POSIX) that libev
+requires, and its I/O model is fundamentally incompatible with the POSIX
+model. Libev still offers limited functionality on this platform in
+the form of the C<EVBACKEND_SELECT> backend, and only supports socket
+descriptors. This only applies when using Win32 natively, not when using
+e.g. cygwin. Actually, it only applies to the microsofts own compilers,
+as every compielr comes with a slightly differently broken/incompatible
+environment.
+
+Lifting these limitations would basically require the full
+re-implementation of the I/O system. If you are into this kind of thing,
+then note that glib does exactly that for you in a very portable way (note
+also that glib is the slowest event library known to man).
+
+There is no supported compilation method available on windows except
+embedding it into other applications.
+
+Sensible signal handling is officially unsupported by Microsoft - libev
+tries its best, but under most conditions, signals will simply not work.
+
+Not a libev limitation but worth mentioning: windows apparently doesn't
+accept large writes: instead of resulting in a partial write, windows will
+either accept everything or return C<ENOBUFS> if the buffer is too large,
+so make sure you only write small amounts into your sockets (less than a
+megabyte seems safe, but this apparently depends on the amount of memory
+available).
+
+Due to the many, low, and arbitrary limits on the win32 platform and
+the abysmal performance of winsockets, using a large number of sockets
+is not recommended (and not reasonable). If your program needs to use
+more than a hundred or so sockets, then likely it needs to use a totally
+different implementation for windows, as libev offers the POSIX readiness
+notification model, which cannot be implemented efficiently on windows
+(due to Microsoft monopoly games).
+
+A typical way to use libev under windows is to embed it (see the embedding
+section for details) and use the following F<evwrap.h> header file instead
+of F<ev.h>:
+
+ #define EV_STANDALONE /* keeps ev from requiring config.h */
+ #define EV_SELECT_IS_WINSOCKET 1 /* configure libev for windows select */
+
+ #include "ev.h"
+
+And compile the following F<evwrap.c> file into your project (make sure
+you do I<not> compile the F<ev.c> or any other embedded source files!):
+
+ #include "evwrap.h"
+ #include "ev.c"
+
+=head3 The winsocket C<select> function
+
+The winsocket C<select> function doesn't follow POSIX in that it
+requires socket I<handles> and not socket I<file descriptors> (it is
+also extremely buggy). This makes select very inefficient, and also
+requires a mapping from file descriptors to socket handles (the Microsoft
+C runtime provides the function C<_open_osfhandle> for this). See the
+discussion of the C<EV_SELECT_USE_FD_SET>, C<EV_SELECT_IS_WINSOCKET> and
+C<EV_FD_TO_WIN32_HANDLE> preprocessor symbols for more info.
+
+The configuration for a "naked" win32 using the Microsoft runtime
+libraries and raw winsocket select is:
+
+ #define EV_USE_SELECT 1
+ #define EV_SELECT_IS_WINSOCKET 1 /* forces EV_SELECT_USE_FD_SET, too */
+
+Note that winsockets handling of fd sets is O(n), so you can easily get a
+complexity in the O(n²) range when using win32.
+
+=head3 Limited number of file descriptors
+
+Windows has numerous arbitrary (and low) limits on things.
+
+Early versions of winsocket's select only supported waiting for a maximum
+of C<64> handles (probably owning to the fact that all windows kernels
+can only wait for C<64> things at the same time internally; Microsoft
+recommends spawning a chain of threads and wait for 63 handles and the
+previous thread in each. Sounds great!).
+
+Newer versions support more handles, but you need to define C<FD_SETSIZE>
+to some high number (e.g. C<2048>) before compiling the winsocket select
+call (which might be in libev or elsewhere, for example, perl and many
+other interpreters do their own select emulation on windows).
+
+Another limit is the number of file descriptors in the Microsoft runtime
+libraries, which by default is C<64> (there must be a hidden I<64>
+fetish or something like this inside Microsoft). You can increase this
+by calling C<_setmaxstdio>, which can increase this limit to C<2048>
+(another arbitrary limit), but is broken in many versions of the Microsoft
+runtime libraries. This might get you to about C<512> or C<2048> sockets
+(depending on windows version and/or the phase of the moon). To get more,
+you need to wrap all I/O functions and provide your own fd management, but
+the cost of calling select (O(n²)) will likely make this unworkable.
+
+=head2 PORTABILITY REQUIREMENTS
+
+In addition to a working ISO-C implementation and of course the
+backend-specific APIs, libev relies on a few additional extensions:
+
+=over 4
+
+=item C<void (*)(ev_watcher_type *, int revents)> must have compatible
+calling conventions regardless of C<ev_watcher_type *>.
+
+Libev assumes not only that all watcher pointers have the same internal
+structure (guaranteed by POSIX but not by ISO C for example), but it also
+assumes that the same (machine) code can be used to call any watcher
+callback: The watcher callbacks have different type signatures, but libev
+calls them using an C<ev_watcher *> internally.
+
+=item pointer accesses must be thread-atomic
+
+Accessing a pointer value must be atomic, it must both be readable and
+writable in one piece - this is the case on all current architectures.
+
+=item C<sig_atomic_t volatile> must be thread-atomic as well
+
+The type C<sig_atomic_t volatile> (or whatever is defined as
+C<EV_ATOMIC_T>) must be atomic with respect to accesses from different
+threads. This is not part of the specification for C<sig_atomic_t>, but is
+believed to be sufficiently portable.
+
+=item C<sigprocmask> must work in a threaded environment
+
+Libev uses C<sigprocmask> to temporarily block signals. This is not
+allowed in a threaded program (C<pthread_sigmask> has to be used). Typical
+pthread implementations will either allow C<sigprocmask> in the "main
+thread" or will block signals process-wide, both behaviours would
+be compatible with libev. Interaction between C<sigprocmask> and
+C<pthread_sigmask> could complicate things, however.
+
+The most portable way to handle signals is to block signals in all threads
+except the initial one, and run the default loop in the initial thread as
+well.
+
+=item C<long> must be large enough for common memory allocation sizes
+
+To improve portability and simplify its API, libev uses C<long> internally
+instead of C<size_t> when allocating its data structures. On non-POSIX
+systems (Microsoft...) this might be unexpectedly low, but is still at
+least 31 bits everywhere, which is enough for hundreds of millions of
+watchers.
+
+=item C<double> must hold a time value in seconds with enough accuracy
+
+The type C<double> is used to represent timestamps. It is required to
+have at least 51 bits of mantissa (and 9 bits of exponent), which is
+good enough for at least into the year 4000 with millisecond accuracy
+(the design goal for libev). This requirement is overfulfilled by
+implementations using IEEE 754, which is basically all existing ones. With
+IEEE 754 doubles, you get microsecond accuracy until at least 2200.
+
+=back
+
+If you know of other additional requirements drop me a note.
+
+
+=head1 ALGORITHMIC COMPLEXITIES
+
+In this section the complexities of (many of) the algorithms used inside
+libev will be documented. For complexity discussions about backends see
+the documentation for C<ev_default_init>.
+
+All of the following are about amortised time: If an array needs to be
+extended, libev needs to realloc and move the whole array, but this
+happens asymptotically rarer with higher number of elements, so O(1) might
+mean that libev does a lengthy realloc operation in rare cases, but on
+average it is much faster and asymptotically approaches constant time.
+
+=over 4
+
+=item Starting and stopping timer/periodic watchers: O(log skipped_other_timers)
+
+This means that, when you have a watcher that triggers in one hour and
+there are 100 watchers that would trigger before that, then inserting will
+have to skip roughly seven (C<ld 100>) of these watchers.
+
+=item Changing timer/periodic watchers (by autorepeat or calling again): O(log skipped_other_timers)
+
+That means that changing a timer costs less than removing/adding them,
+as only the relative motion in the event queue has to be paid for.
+
+=item Starting io/check/prepare/idle/signal/child/fork/async watchers: O(1)
+
+These just add the watcher into an array or at the head of a list.
+
+=item Stopping check/prepare/idle/fork/async watchers: O(1)
+
+=item Stopping an io/signal/child watcher: O(number_of_watchers_for_this_(fd/signal/pid % EV_PID_HASHSIZE))
+
+These watchers are stored in lists, so they need to be walked to find the
+correct watcher to remove. The lists are usually short (you don't usually
+have many watchers waiting for the same fd or signal: one is typical, two
+is rare).
+
+=item Finding the next timer in each loop iteration: O(1)
+
+By virtue of using a binary or 4-heap, the next timer is always found at a
+fixed position in the storage array.
+
+=item Each change on a file descriptor per loop iteration: O(number_of_watchers_for_this_fd)
+
+A change means an I/O watcher gets started or stopped, which requires
+libev to recalculate its status (and possibly tell the kernel, depending
+on backend and whether C<ev_io_set> was used).
+
+=item Activating one watcher (putting it into the pending state): O(1)
+
+=item Priority handling: O(number_of_priorities)
+
+Priorities are implemented by allocating some space for each
+priority. When doing priority-based operations, libev usually has to
+linearly search all the priorities, but starting/stopping and activating
+watchers becomes O(1) with respect to priority handling.
+
+=item Sending an ev_async: O(1)
+
+=item Processing ev_async_send: O(number_of_async_watchers)
+
+=item Processing signals: O(max_signal_number)
+
+Sending involves a system call I<iff> there were no other C<ev_async_send>
+calls in the current loop iteration. Checking for async and signal events
+involves iterating over all running async watchers or all signal numbers.
+
+=back
+
+
+=head1 PORTING FROM LIBEV 3.X TO 4.X
+
+The major version 4 introduced some incompatible changes to the API.
+
+At the moment, the C<ev.h> header file provides compatibility definitions
+for all changes, so most programs should still compile. The compatibility
+layer might be removed in later versions of libev, so better update to the
+new API early than late.
+
+=over 4
+
+=item C<EV_COMPAT3> backwards compatibility mechanism
+
+The backward compatibility mechanism can be controlled by
+C<EV_COMPAT3>. See L<PREPROCESSOR SYMBOLS/MACROS> in the L<EMBEDDING>
+section.
+
+=item C<ev_default_destroy> and C<ev_default_fork> have been removed
+
+These calls can be replaced easily by their C<ev_loop_xxx> counterparts:
+
+ ev_loop_destroy (EV_DEFAULT_UC);
+ ev_loop_fork (EV_DEFAULT);
+
+=item function/symbol renames
+
+A number of functions and symbols have been renamed:
+
+ ev_loop => ev_run
+ EVLOOP_NONBLOCK => EVRUN_NOWAIT
+ EVLOOP_ONESHOT => EVRUN_ONCE
+
+ ev_unloop => ev_break
+ EVUNLOOP_CANCEL => EVBREAK_CANCEL
+ EVUNLOOP_ONE => EVBREAK_ONE
+ EVUNLOOP_ALL => EVBREAK_ALL
+
+ EV_TIMEOUT => EV_TIMER
+
+ ev_loop_count => ev_iteration
+ ev_loop_depth => ev_depth
+ ev_loop_verify => ev_verify
+
+Most functions working on C<struct ev_loop> objects don't have an
+C<ev_loop_> prefix, so it was removed; C<ev_loop>, C<ev_unloop> and
+associated constants have been renamed to not collide with the C<struct
+ev_loop> anymore and C<EV_TIMER> now follows the same naming scheme
+as all other watcher types. Note that C<ev_loop_fork> is still called
+C<ev_loop_fork> because it would otherwise clash with the C<ev_fork>
+typedef.
+
+=item C<EV_MINIMAL> mechanism replaced by C<EV_FEATURES>
+
+The preprocessor symbol C<EV_MINIMAL> has been replaced by a different
+mechanism, C<EV_FEATURES>. Programs using C<EV_MINIMAL> usually compile
+and work, but the library code will of course be larger.
+
+=back
+
+
+=head1 GLOSSARY
+
+=over 4
+
+=item active
+
+A watcher is active as long as it has been started and not yet stopped.
+See L<WATCHER STATES> for details.
+
+=item application
+
+In this document, an application is whatever is using libev.
+
+=item backend
+
+The part of the code dealing with the operating system interfaces.
+
+=item callback
+
+The address of a function that is called when some event has been
+detected. Callbacks are being passed the event loop, the watcher that
+received the event, and the actual event bitset.
+
+=item callback/watcher invocation
+
+The act of calling the callback associated with a watcher.
+
+=item event
+
+A change of state of some external event, such as data now being available
+for reading on a file descriptor, time having passed or simply not having
+any other events happening anymore.
+
+In libev, events are represented as single bits (such as C<EV_READ> or
+C<EV_TIMER>).
+
+=item event library
+
+A software package implementing an event model and loop.
+
+=item event loop
+
+An entity that handles and processes external events and converts them
+into callback invocations.
+
+=item event model
+
+The model used to describe how an event loop handles and processes
+watchers and events.
+
+=item pending
+
+A watcher is pending as soon as the corresponding event has been
+detected. See L<WATCHER STATES> for details.
+
+=item real time
+
+The physical time that is observed. It is apparently strictly monotonic :)
+
+=item wall-clock time
+
+The time and date as shown on clocks. Unlike real time, it can actually
+be wrong and jump forwards and backwards, e.g. when you adjust your
+clock.
+
+=item watcher
+
+A data structure that describes interest in certain events. Watchers need
+to be started (attached to an event loop) before they can receive events.
+
+=back
+
+=head1 AUTHOR
+
+Marc Lehmann <libev@schmorp.de>, with repeated corrections by Mikael
+Magnusson and Emanuele Giaquinta, and minor corrections by many others.
+
--- /dev/null
+/*
+ * libev epoll fd activity backend
+ *
+ * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+/*
+ * general notes about epoll:
+ *
+ * a) epoll silently removes fds from the fd set. as nothing tells us
+ * that an fd has been removed otherwise, we have to continually
+ * "rearm" fds that we suspect *might* have changed (same
+ * problem with kqueue, but much less costly there).
+ * b) the fact that ADD != MOD creates a lot of extra syscalls due to a)
+ * and seems not to have any advantage.
+ * c) the inability to handle fork or file descriptors (think dup)
+ * limits the applicability over poll, so this is not a generic
+ * poll replacement.
+ * d) epoll doesn't work the same as select with many file descriptors
+ * (such as files). while not critical, no other advanced interface
+ * seems to share this (rather non-unixy) limitation.
+ * e) epoll claims to be embeddable, but in practise you never get
+ * a ready event for the epoll fd (broken: <=2.6.26, working: >=2.6.32).
+ * f) epoll_ctl returning EPERM means the fd is always ready.
+ *
+ * lots of "weird code" and complication handling in this file is due
+ * to these design problems with epoll, as we try very hard to avoid
+ * epoll_ctl syscalls for common usage patterns and handle the breakage
+ * ensuing from receiving events for closed and otherwise long gone
+ * file descriptors.
+ */
+
+#include <sys/epoll.h>
+
+#define EV_EMASK_EPERM 0x80
+
+static void
+epoll_modify (EV_P_ int fd, int oev, int nev)
+{
+ struct epoll_event ev;
+ unsigned char oldmask;
+
+ /*
+ * we handle EPOLL_CTL_DEL by ignoring it here
+ * on the assumption that the fd is gone anyways
+ * if that is wrong, we have to handle the spurious
+ * event in epoll_poll.
+ * if the fd is added again, we try to ADD it, and, if that
+ * fails, we assume it still has the same eventmask.
+ */
+ if (!nev)
+ return;
+
+ oldmask = anfds [fd].emask;
+ anfds [fd].emask = nev;
+
+ /* store the generation counter in the upper 32 bits, the fd in the lower 32 bits */
+ ev.data.u64 = (uint64_t)(uint32_t)fd
+ | ((uint64_t)(uint32_t)++anfds [fd].egen << 32);
+ ev.events = (nev & EV_READ ? EPOLLIN : 0)
+ | (nev & EV_WRITE ? EPOLLOUT : 0);
+
+ if (expect_true (!epoll_ctl (backend_fd, oev && oldmask != nev ? EPOLL_CTL_MOD : EPOLL_CTL_ADD, fd, &ev)))
+ return;
+
+ if (expect_true (errno == ENOENT))
+ {
+ /* if ENOENT then the fd went away, so try to do the right thing */
+ if (!nev)
+ goto dec_egen;
+
+ if (!epoll_ctl (backend_fd, EPOLL_CTL_ADD, fd, &ev))
+ return;
+ }
+ else if (expect_true (errno == EEXIST))
+ {
+ /* EEXIST means we ignored a previous DEL, but the fd is still active */
+ /* if the kernel mask is the same as the new mask, we assume it hasn't changed */
+ if (oldmask == nev)
+ goto dec_egen;
+
+ if (!epoll_ctl (backend_fd, EPOLL_CTL_MOD, fd, &ev))
+ return;
+ }
+ else if (expect_true (errno == EPERM))
+ {
+ /* EPERM means the fd is always ready, but epoll is too snobbish */
+ /* to handle it, unlike select or poll. */
+ anfds [fd].emask = EV_EMASK_EPERM;
+
+ /* add fd to epoll_eperms, if not already inside */
+ if (!(oldmask & EV_EMASK_EPERM))
+ {
+ array_needsize (int, epoll_eperms, epoll_epermmax, epoll_epermcnt + 1, EMPTY2);
+ epoll_eperms [epoll_epermcnt++] = fd;
+ }
+
+ return;
+ }
+
+ fd_kill (EV_A_ fd);
+
+dec_egen:
+ /* we didn't successfully call epoll_ctl, so decrement the generation counter again */
+ --anfds [fd].egen;
+}
+
+static void
+epoll_poll (EV_P_ ev_tstamp timeout)
+{
+ int i;
+ int eventcnt;
+
+ /* epoll wait times cannot be larger than (LONG_MAX - 999UL) / HZ msecs, which is below */
+ /* the default libev max wait time, however. */
+ EV_RELEASE_CB;
+ eventcnt = epoll_wait (backend_fd, epoll_events, epoll_eventmax,
+ epoll_epermcnt ? 0 : ev_timeout_to_ms (timeout));
+ EV_ACQUIRE_CB;
+
+ if (expect_false (eventcnt < 0))
+ {
+ if (errno != EINTR)
+ ev_syserr ("(libev) epoll_wait");
+
+ return;
+ }
+
+ for (i = 0; i < eventcnt; ++i)
+ {
+ struct epoll_event *ev = epoll_events + i;
+
+ int fd = (uint32_t)ev->data.u64; /* mask out the lower 32 bits */
+ int want = anfds [fd].events;
+ int got = (ev->events & (EPOLLOUT | EPOLLERR | EPOLLHUP) ? EV_WRITE : 0)
+ | (ev->events & (EPOLLIN | EPOLLERR | EPOLLHUP) ? EV_READ : 0);
+
+ /* check for spurious notification */
+ /* we assume that fd is always in range, as we never shrink the anfds array */
+ if (expect_false ((uint32_t)anfds [fd].egen != (uint32_t)(ev->data.u64 >> 32)))
+ {
+ /* recreate kernel state */
+ postfork = 1;
+ continue;
+ }
+
+ if (expect_false (got & ~want))
+ {
+ anfds [fd].emask = want;
+
+ /* we received an event but are not interested in it, try mod or del */
+ /* I don't think we ever need MOD, but let's handle it anyways */
+ ev->events = (want & EV_READ ? EPOLLIN : 0)
+ | (want & EV_WRITE ? EPOLLOUT : 0);
+
+ /* pre-2.6.9 kernels require a non-null pointer with EPOLL_CTL_DEL, */
+ /* which is fortunately easy to do for us. */
+ if (epoll_ctl (backend_fd, want ? EPOLL_CTL_MOD : EPOLL_CTL_DEL, fd, ev))
+ {
+ postfork = 1; /* an error occurred, recreate kernel state */
+ continue;
+ }
+ }
+
+ fd_event (EV_A_ fd, got);
+ }
+
+ /* if the receive array was full, increase its size */
+ if (expect_false (eventcnt == epoll_eventmax))
+ {
+ ev_free (epoll_events);
+ epoll_eventmax = array_nextsize (sizeof (struct epoll_event), epoll_eventmax, epoll_eventmax + 1);
+ epoll_events = (struct epoll_event *)ev_malloc (sizeof (struct epoll_event) * epoll_eventmax);
+ }
+
+ /* now synthesize events for all fds where epoll fails, while select works... */
+ for (i = epoll_epermcnt; i--; )
+ {
+ int fd = epoll_eperms [i];
+ unsigned char events = anfds [fd].events & (EV_READ | EV_WRITE);
+
+ if (anfds [fd].emask & EV_EMASK_EPERM && events)
+ fd_event (EV_A_ fd, events);
+ else
+ epoll_eperms [i] = epoll_eperms [--epoll_epermcnt];
+ }
+}
+
+int inline_size
+epoll_init (EV_P_ int flags)
+{
+#ifdef EPOLL_CLOEXEC
+ backend_fd = epoll_create1 (EPOLL_CLOEXEC);
+
+ if (backend_fd <= 0)
+#endif
+ backend_fd = epoll_create (256);
+
+ if (backend_fd < 0)
+ return 0;
+
+ fcntl (backend_fd, F_SETFD, FD_CLOEXEC);
+
+ backend_fudge = 0.; /* kernel sources seem to indicate this to be zero */
+ backend_modify = epoll_modify;
+ backend_poll = epoll_poll;
+
+ epoll_eventmax = 64; /* initial number of events receivable per poll */
+ epoll_events = (struct epoll_event *)ev_malloc (sizeof (struct epoll_event) * epoll_eventmax);
+
+ return EVBACKEND_EPOLL;
+}
+
+void inline_size
+epoll_destroy (EV_P)
+{
+ ev_free (epoll_events);
+ array_free (epoll_eperm, EMPTY);
+}
+
+void inline_size
+epoll_fork (EV_P)
+{
+ close (backend_fd);
+
+ while ((backend_fd = epoll_create (256)) < 0)
+ ev_syserr ("(libev) epoll_create");
+
+ fcntl (backend_fd, F_SETFD, FD_CLOEXEC);
+
+ fd_rearm_all (EV_A);
+}
+
--- /dev/null
+/*
+ * libev kqueue backend
+ *
+ * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/event.h>
+#include <string.h>
+#include <errno.h>
+
+void inline_speed
+kqueue_change (EV_P_ int fd, int filter, int flags, int fflags)
+{
+ ++kqueue_changecnt;
+ array_needsize (struct kevent, kqueue_changes, kqueue_changemax, kqueue_changecnt, EMPTY2);
+
+ EV_SET (&kqueue_changes [kqueue_changecnt - 1], fd, filter, flags, fflags, 0, 0);
+}
+
+/* OS X at least needs this */
+#ifndef EV_ENABLE
+# define EV_ENABLE 0
+#endif
+#ifndef NOTE_EOF
+# define NOTE_EOF 0
+#endif
+
+static void
+kqueue_modify (EV_P_ int fd, int oev, int nev)
+{
+ if (oev != nev)
+ {
+ if (oev & EV_READ)
+ kqueue_change (EV_A_ fd, EVFILT_READ , EV_DELETE, 0);
+
+ if (oev & EV_WRITE)
+ kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_DELETE, 0);
+ }
+
+ /* to detect close/reopen reliably, we have to re-add */
+ /* event requests even when oev == nev */
+
+ if (nev & EV_READ)
+ kqueue_change (EV_A_ fd, EVFILT_READ , EV_ADD | EV_ENABLE, NOTE_EOF);
+
+ if (nev & EV_WRITE)
+ kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_ADD | EV_ENABLE, NOTE_EOF);
+}
+
+static void
+kqueue_poll (EV_P_ ev_tstamp timeout)
+{
+ int res, i;
+ struct timespec ts;
+
+ /* need to resize so there is enough space for errors */
+ if (kqueue_changecnt > kqueue_eventmax)
+ {
+ ev_free (kqueue_events);
+ kqueue_eventmax = array_nextsize (sizeof (struct kevent), kqueue_eventmax, kqueue_changecnt);
+ kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax);
+ }
+
+ EV_RELEASE_CB;
+ EV_TS_SET (ts, timeout);
+ res = kevent (backend_fd, kqueue_changes, kqueue_changecnt, kqueue_events, kqueue_eventmax, &ts);
+ EV_ACQUIRE_CB;
+ kqueue_changecnt = 0;
+
+ if (expect_false (res < 0))
+ {
+ if (errno != EINTR)
+ ev_syserr ("(libev) kevent");
+
+ return;
+ }
+
+ for (i = 0; i < res; ++i)
+ {
+ int fd = kqueue_events [i].ident;
+
+ if (expect_false (kqueue_events [i].flags & EV_ERROR))
+ {
+ int err = kqueue_events [i].data;
+
+ /* we are only interested in errors for fds that we are interested in :) */
+ if (anfds [fd].events)
+ {
+ if (err == ENOENT) /* resubmit changes on ENOENT */
+ kqueue_modify (EV_A_ fd, 0, anfds [fd].events);
+ else if (err == EBADF) /* on EBADF, we re-check the fd */
+ {
+ if (fd_valid (fd))
+ kqueue_modify (EV_A_ fd, 0, anfds [fd].events);
+ else
+ fd_kill (EV_A_ fd);
+ }
+ else /* on all other errors, we error out on the fd */
+ fd_kill (EV_A_ fd);
+ }
+ }
+ else
+ fd_event (
+ EV_A_
+ fd,
+ kqueue_events [i].filter == EVFILT_READ ? EV_READ
+ : kqueue_events [i].filter == EVFILT_WRITE ? EV_WRITE
+ : 0
+ );
+ }
+
+ if (expect_false (res == kqueue_eventmax))
+ {
+ ev_free (kqueue_events);
+ kqueue_eventmax = array_nextsize (sizeof (struct kevent), kqueue_eventmax, kqueue_eventmax + 1);
+ kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax);
+ }
+}
+
+int inline_size
+kqueue_init (EV_P_ int flags)
+{
+ /* Initialize the kernel queue */
+ if ((backend_fd = kqueue ()) < 0)
+ return 0;
+
+ fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */
+
+ backend_fudge = 0.;
+ backend_modify = kqueue_modify;
+ backend_poll = kqueue_poll;
+
+ kqueue_eventmax = 64; /* initial number of events receivable per poll */
+ kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax);
+
+ kqueue_changes = 0;
+ kqueue_changemax = 0;
+ kqueue_changecnt = 0;
+
+ return EVBACKEND_KQUEUE;
+}
+
+void inline_size
+kqueue_destroy (EV_P)
+{
+ ev_free (kqueue_events);
+ ev_free (kqueue_changes);
+}
+
+void inline_size
+kqueue_fork (EV_P)
+{
+ close (backend_fd);
+
+ while ((backend_fd = kqueue ()) < 0)
+ ev_syserr ("(libev) kqueue");
+
+ fcntl (backend_fd, F_SETFD, FD_CLOEXEC);
+
+ /* re-register interest in fds */
+ fd_rearm_all (EV_A);
+}
+
--- /dev/null
+/*
+ * libev poll fd activity backend
+ *
+ * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#include <poll.h>
+
+void inline_size
+pollidx_init (int *base, int count)
+{
+ /* consider using memset (.., -1, ...), which is practically guaranteed
+ * to work on all systems implementing poll */
+ while (count--)
+ *base++ = -1;
+}
+
+static void
+poll_modify (EV_P_ int fd, int oev, int nev)
+{
+ int idx;
+
+ if (oev == nev)
+ return;
+
+ array_needsize (int, pollidxs, pollidxmax, fd + 1, pollidx_init);
+
+ idx = pollidxs [fd];
+
+ if (idx < 0) /* need to allocate a new pollfd */
+ {
+ pollidxs [fd] = idx = pollcnt++;
+ array_needsize (struct pollfd, polls, pollmax, pollcnt, EMPTY2);
+ polls [idx].fd = fd;
+ }
+
+ assert (polls [idx].fd == fd);
+
+ if (nev)
+ polls [idx].events =
+ (nev & EV_READ ? POLLIN : 0)
+ | (nev & EV_WRITE ? POLLOUT : 0);
+ else /* remove pollfd */
+ {
+ pollidxs [fd] = -1;
+
+ if (expect_true (idx < --pollcnt))
+ {
+ polls [idx] = polls [pollcnt];
+ pollidxs [polls [idx].fd] = idx;
+ }
+ }
+}
+
+static void
+poll_poll (EV_P_ ev_tstamp timeout)
+{
+ struct pollfd *p;
+ int res;
+
+ EV_RELEASE_CB;
+ res = poll (polls, pollcnt, ev_timeout_to_ms (timeout));
+ EV_ACQUIRE_CB;
+
+ if (expect_false (res < 0))
+ {
+ if (errno == EBADF)
+ fd_ebadf (EV_A);
+ else if (errno == ENOMEM && !syserr_cb)
+ fd_enomem (EV_A);
+ else if (errno != EINTR)
+ ev_syserr ("(libev) poll");
+ }
+ else
+ for (p = polls; res; ++p)
+ {
+ assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt));
+
+ if (expect_false (p->revents)) /* this expect is debatable */
+ {
+ --res;
+
+ if (expect_false (p->revents & POLLNVAL))
+ fd_kill (EV_A_ p->fd);
+ else
+ fd_event (
+ EV_A_
+ p->fd,
+ (p->revents & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0)
+ | (p->revents & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0)
+ );
+ }
+ }
+}
+
+int inline_size
+poll_init (EV_P_ int flags)
+{
+ backend_fudge = 0.; /* posix says this is zero */
+ backend_modify = poll_modify;
+ backend_poll = poll_poll;
+
+ pollidxs = 0; pollidxmax = 0;
+ polls = 0; pollmax = 0; pollcnt = 0;
+
+ return EVBACKEND_POLL;
+}
+
+void inline_size
+poll_destroy (EV_P)
+{
+ ev_free (pollidxs);
+ ev_free (polls);
+}
+
--- /dev/null
+/*
+ * libev solaris event port backend
+ *
+ * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+/* useful reading:
+ *
+ * http://bugs.opensolaris.org/view_bug.do?bug_id=6268715 (random results)
+ * http://bugs.opensolaris.org/view_bug.do?bug_id=6455223 (just totally broken)
+ * http://bugs.opensolaris.org/view_bug.do?bug_id=6873782 (manpage ETIME)
+ * http://bugs.opensolaris.org/view_bug.do?bug_id=6874410 (implementation ETIME)
+ * http://www.mail-archive.com/networking-discuss@opensolaris.org/msg11898.html ETIME vs. nget
+ * http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/event_port.c (libc)
+ * http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/portfs/port.c#1325 (kernel)
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <poll.h>
+#include <port.h>
+#include <string.h>
+#include <errno.h>
+
+void inline_speed
+port_associate_and_check (EV_P_ int fd, int ev)
+{
+ if (0 >
+ port_associate (
+ backend_fd, PORT_SOURCE_FD, fd,
+ (ev & EV_READ ? POLLIN : 0)
+ | (ev & EV_WRITE ? POLLOUT : 0),
+ 0
+ )
+ )
+ {
+ if (errno == EBADFD)
+ fd_kill (EV_A_ fd);
+ else
+ ev_syserr ("(libev) port_associate");
+ }
+}
+
+static void
+port_modify (EV_P_ int fd, int oev, int nev)
+{
+ /* we need to reassociate no matter what, as closes are
+ * once more silently being discarded.
+ */
+ if (!nev)
+ {
+ if (oev)
+ port_dissociate (backend_fd, PORT_SOURCE_FD, fd);
+ }
+ else
+ port_associate_and_check (EV_A_ fd, nev);
+}
+
+static void
+port_poll (EV_P_ ev_tstamp timeout)
+{
+ int res, i;
+ struct timespec ts;
+ uint_t nget = 1;
+
+ /* we initialise this to something we will skip in the loop, as */
+ /* port_getn can return with nget unchanged, but no indication */
+ /* whether it was the original value or has been updated :/ */
+ port_events [0].portev_source = 0;
+
+ EV_RELEASE_CB;
+ EV_TS_SET (ts, timeout);
+ res = port_getn (backend_fd, port_events, port_eventmax, &nget, &ts);
+ EV_ACQUIRE_CB;
+
+ /* port_getn may or may not set nget on error */
+ /* so we rely on port_events [0].portev_source not being updated */
+ if (res == -1 && errno != ETIME && errno != EINTR)
+ ev_syserr ("(libev) port_getn (see http://bugs.opensolaris.org/view_bug.do?bug_id=6268715, try LIBEV_FLAGS=3 env variable)");
+
+ for (i = 0; i < nget; ++i)
+ {
+ if (port_events [i].portev_source == PORT_SOURCE_FD)
+ {
+ int fd = port_events [i].portev_object;
+
+ fd_event (
+ EV_A_
+ fd,
+ (port_events [i].portev_events & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0)
+ | (port_events [i].portev_events & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0)
+ );
+
+ fd_change (EV_A_ fd, EV__IOFDSET);
+ }
+ }
+
+ if (expect_false (nget == port_eventmax))
+ {
+ ev_free (port_events);
+ port_eventmax = array_nextsize (sizeof (port_event_t), port_eventmax, port_eventmax + 1);
+ port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax);
+ }
+}
+
+int inline_size
+port_init (EV_P_ int flags)
+{
+ /* Initialize the kernel queue */
+ if ((backend_fd = port_create ()) < 0)
+ return 0;
+
+ assert (("libev: PORT_SOURCE_FD must not be zero", PORT_SOURCE_FD));
+
+ fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */
+
+ backend_fudge = 1e-3; /* needed to compensate for port_getn returning early */
+ backend_modify = port_modify;
+ backend_poll = port_poll;
+
+ port_eventmax = 64; /* initial number of events receivable per poll */
+ port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax);
+
+ return EVBACKEND_PORT;
+}
+
+void inline_size
+port_destroy (EV_P)
+{
+ ev_free (port_events);
+}
+
+void inline_size
+port_fork (EV_P)
+{
+ close (backend_fd);
+
+ while ((backend_fd = port_create ()) < 0)
+ ev_syserr ("(libev) port");
+
+ fcntl (backend_fd, F_SETFD, FD_CLOEXEC);
+
+ /* re-register interest in fds */
+ fd_rearm_all (EV_A);
+}
+
--- /dev/null
+/*
+ * libev select fd activity backend
+ *
+ * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#ifndef _WIN32
+/* for unix systems */
+# include <inttypes.h>
+# ifndef __hpux
+/* for REAL unix systems */
+# include <sys/select.h>
+# endif
+#endif
+
+#ifndef EV_SELECT_USE_FD_SET
+# ifdef NFDBITS
+# define EV_SELECT_USE_FD_SET 0
+# else
+# define EV_SELECT_USE_FD_SET 1
+# endif
+#endif
+
+#if EV_SELECT_IS_WINSOCKET
+# undef EV_SELECT_USE_FD_SET
+# define EV_SELECT_USE_FD_SET 1
+# undef NFDBITS
+# define NFDBITS 0
+#endif
+
+#if !EV_SELECT_USE_FD_SET
+# define NFDBYTES (NFDBITS / 8)
+#endif
+
+#include <string.h>
+
+static void
+select_modify (EV_P_ int fd, int oev, int nev)
+{
+ if (oev == nev)
+ return;
+
+ {
+#if EV_SELECT_USE_FD_SET
+
+ #if EV_SELECT_IS_WINSOCKET
+ SOCKET handle = anfds [fd].handle;
+ #else
+ int handle = fd;
+ #endif
+
+ assert (("libev: fd >= FD_SETSIZE passed to fd_set-based select backend", fd < FD_SETSIZE));
+
+ /* FD_SET is broken on windows (it adds the fd to a set twice or more,
+ * which eventually leads to overflows). Need to call it only on changes.
+ */
+ #if EV_SELECT_IS_WINSOCKET
+ if ((oev ^ nev) & EV_READ)
+ #endif
+ if (nev & EV_READ)
+ FD_SET (handle, (fd_set *)vec_ri);
+ else
+ FD_CLR (handle, (fd_set *)vec_ri);
+
+ #if EV_SELECT_IS_WINSOCKET
+ if ((oev ^ nev) & EV_WRITE)
+ #endif
+ if (nev & EV_WRITE)
+ FD_SET (handle, (fd_set *)vec_wi);
+ else
+ FD_CLR (handle, (fd_set *)vec_wi);
+
+#else
+
+ int word = fd / NFDBITS;
+ fd_mask mask = 1UL << (fd % NFDBITS);
+
+ if (expect_false (vec_max <= word))
+ {
+ int new_max = word + 1;
+
+ vec_ri = ev_realloc (vec_ri, new_max * NFDBYTES);
+ vec_ro = ev_realloc (vec_ro, new_max * NFDBYTES); /* could free/malloc */
+ vec_wi = ev_realloc (vec_wi, new_max * NFDBYTES);
+ vec_wo = ev_realloc (vec_wo, new_max * NFDBYTES); /* could free/malloc */
+ #ifdef _WIN32
+ vec_eo = ev_realloc (vec_eo, new_max * NFDBYTES); /* could free/malloc */
+ #endif
+
+ for (; vec_max < new_max; ++vec_max)
+ ((fd_mask *)vec_ri) [vec_max] =
+ ((fd_mask *)vec_wi) [vec_max] = 0;
+ }
+
+ ((fd_mask *)vec_ri) [word] |= mask;
+ if (!(nev & EV_READ))
+ ((fd_mask *)vec_ri) [word] &= ~mask;
+
+ ((fd_mask *)vec_wi) [word] |= mask;
+ if (!(nev & EV_WRITE))
+ ((fd_mask *)vec_wi) [word] &= ~mask;
+#endif
+ }
+}
+
+static void
+select_poll (EV_P_ ev_tstamp timeout)
+{
+ struct timeval tv;
+ int res;
+ int fd_setsize;
+
+ EV_RELEASE_CB;
+ EV_TV_SET (tv, timeout);
+
+#if EV_SELECT_USE_FD_SET
+ fd_setsize = sizeof (fd_set);
+#else
+ fd_setsize = vec_max * NFDBYTES;
+#endif
+
+ memcpy (vec_ro, vec_ri, fd_setsize);
+ memcpy (vec_wo, vec_wi, fd_setsize);
+
+#ifdef _WIN32
+ /* pass in the write set as except set.
+ * the idea behind this is to work around a windows bug that causes
+ * errors to be reported as an exception and not by setting
+ * the writable bit. this is so uncontrollably lame.
+ */
+ memcpy (vec_eo, vec_wi, fd_setsize);
+ res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, (fd_set *)vec_eo, &tv);
+#elif EV_SELECT_USE_FD_SET
+ fd_setsize = anfdmax < FD_SETSIZE ? anfdmax : FD_SETSIZE;
+ res = select (fd_setsize, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
+#else
+ res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
+#endif
+ EV_ACQUIRE_CB;
+
+ if (expect_false (res < 0))
+ {
+ #if EV_SELECT_IS_WINSOCKET
+ errno = WSAGetLastError ();
+ #endif
+ #ifdef WSABASEERR
+ /* on windows, select returns incompatible error codes, fix this */
+ if (errno >= WSABASEERR && errno < WSABASEERR + 1000)
+ if (errno == WSAENOTSOCK)
+ errno = EBADF;
+ else
+ errno -= WSABASEERR;
+ #endif
+
+ #ifdef _WIN32
+ /* select on windows erroneously returns EINVAL when no fd sets have been
+ * provided (this is documented). what microsoft doesn't tell you that this bug
+ * exists even when the fd sets _are_ provided, so we have to check for this bug
+ * here and emulate by sleeping manually.
+ * we also get EINVAL when the timeout is invalid, but we ignore this case here
+ * and assume that EINVAL always means: you have to wait manually.
+ */
+ if (errno == EINVAL)
+ {
+ ev_sleep (timeout);
+ return;
+ }
+ #endif
+
+ if (errno == EBADF)
+ fd_ebadf (EV_A);
+ else if (errno == ENOMEM && !syserr_cb)
+ fd_enomem (EV_A);
+ else if (errno != EINTR)
+ ev_syserr ("(libev) select");
+
+ return;
+ }
+
+#if EV_SELECT_USE_FD_SET
+
+ {
+ int fd;
+
+ for (fd = 0; fd < anfdmax; ++fd)
+ if (anfds [fd].events)
+ {
+ int events = 0;
+ #if EV_SELECT_IS_WINSOCKET
+ SOCKET handle = anfds [fd].handle;
+ #else
+ int handle = fd;
+ #endif
+
+ if (FD_ISSET (handle, (fd_set *)vec_ro)) events |= EV_READ;
+ if (FD_ISSET (handle, (fd_set *)vec_wo)) events |= EV_WRITE;
+ #ifdef _WIN32
+ if (FD_ISSET (handle, (fd_set *)vec_eo)) events |= EV_WRITE;
+ #endif
+
+ if (expect_true (events))
+ fd_event (EV_A_ fd, events);
+ }
+ }
+
+#else
+
+ {
+ int word, bit;
+ for (word = vec_max; word--; )
+ {
+ fd_mask word_r = ((fd_mask *)vec_ro) [word];
+ fd_mask word_w = ((fd_mask *)vec_wo) [word];
+ #ifdef _WIN32
+ word_w |= ((fd_mask *)vec_eo) [word];
+ #endif
+
+ if (word_r || word_w)
+ for (bit = NFDBITS; bit--; )
+ {
+ fd_mask mask = 1UL << bit;
+ int events = 0;
+
+ events |= word_r & mask ? EV_READ : 0;
+ events |= word_w & mask ? EV_WRITE : 0;
+
+ if (expect_true (events))
+ fd_event (EV_A_ word * NFDBITS + bit, events);
+ }
+ }
+ }
+
+#endif
+}
+
+int inline_size
+select_init (EV_P_ int flags)
+{
+ backend_fudge = 0.; /* posix says this is zero */
+ backend_modify = select_modify;
+ backend_poll = select_poll;
+
+#if EV_SELECT_USE_FD_SET
+ vec_ri = ev_malloc (sizeof (fd_set)); FD_ZERO ((fd_set *)vec_ri);
+ vec_ro = ev_malloc (sizeof (fd_set));
+ vec_wi = ev_malloc (sizeof (fd_set)); FD_ZERO ((fd_set *)vec_wi);
+ vec_wo = ev_malloc (sizeof (fd_set));
+ #ifdef _WIN32
+ vec_eo = ev_malloc (sizeof (fd_set));
+ #endif
+#else
+ vec_max = 0;
+ vec_ri = 0;
+ vec_ro = 0;
+ vec_wi = 0;
+ vec_wo = 0;
+ #ifdef _WIN32
+ vec_eo = 0;
+ #endif
+#endif
+
+ return EVBACKEND_SELECT;
+}
+
+void inline_size
+select_destroy (EV_P)
+{
+ ev_free (vec_ri);
+ ev_free (vec_ro);
+ ev_free (vec_wi);
+ ev_free (vec_wo);
+ #ifdef _WIN32
+ ev_free (vec_eo);
+ #endif
+}
+
+
--- /dev/null
+/*
+ * loop member variable declarations
+ *
+ * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#define VARx(type,name) VAR(name, type name)
+
+VARx(ev_tstamp, now_floor) /* last time we refreshed rt_time */
+VARx(ev_tstamp, mn_now) /* monotonic clock "now" */
+VARx(ev_tstamp, rtmn_diff) /* difference realtime - monotonic time */
+
+VARx(ev_tstamp, io_blocktime)
+VARx(ev_tstamp, timeout_blocktime)
+
+VARx(int, backend)
+VARx(int, activecnt) /* total number of active events ("refcount") */
+VARx(EV_ATOMIC_T, loop_done) /* signal by ev_break */
+
+VARx(int, backend_fd)
+VARx(ev_tstamp, backend_fudge) /* assumed typical timer resolution */
+VAR (backend_modify, void (*backend_modify)(EV_P_ int fd, int oev, int nev))
+VAR (backend_poll , void (*backend_poll)(EV_P_ ev_tstamp timeout))
+
+VARx(ANFD *, anfds)
+VARx(int, anfdmax)
+
+VAR (pendings, ANPENDING *pendings [NUMPRI])
+VAR (pendingmax, int pendingmax [NUMPRI])
+VAR (pendingcnt, int pendingcnt [NUMPRI])
+VARx(ev_prepare, pending_w) /* dummy pending watcher */
+
+/* for reverse feeding of events */
+VARx(W *, rfeeds)
+VARx(int, rfeedmax)
+VARx(int, rfeedcnt)
+
+#if EV_USE_EVENTFD || EV_GENWRAP
+VARx(int, evfd)
+#endif
+VAR (evpipe, int evpipe [2])
+VARx(ev_io, pipe_w)
+
+#if !defined(_WIN32) || EV_GENWRAP
+VARx(pid_t, curpid)
+#endif
+
+VARx(char, postfork) /* true if we need to recreate kernel state after fork */
+
+#if EV_USE_SELECT || EV_GENWRAP
+VARx(void *, vec_ri)
+VARx(void *, vec_ro)
+VARx(void *, vec_wi)
+VARx(void *, vec_wo)
+#if defined(_WIN32) || EV_GENWRAP
+VARx(void *, vec_eo)
+#endif
+VARx(int, vec_max)
+#endif
+
+#if EV_USE_POLL || EV_GENWRAP
+VARx(struct pollfd *, polls)
+VARx(int, pollmax)
+VARx(int, pollcnt)
+VARx(int *, pollidxs) /* maps fds into structure indices */
+VARx(int, pollidxmax)
+#endif
+
+#if EV_USE_EPOLL || EV_GENWRAP
+VARx(struct epoll_event *, epoll_events)
+VARx(int, epoll_eventmax)
+VARx(int *, epoll_eperms)
+VARx(int, epoll_epermcnt)
+VARx(int, epoll_epermmax)
+#endif
+
+#if EV_USE_KQUEUE || EV_GENWRAP
+VARx(struct kevent *, kqueue_changes)
+VARx(int, kqueue_changemax)
+VARx(int, kqueue_changecnt)
+VARx(struct kevent *, kqueue_events)
+VARx(int, kqueue_eventmax)
+#endif
+
+#if EV_USE_PORT || EV_GENWRAP
+VARx(struct port_event *, port_events)
+VARx(int, port_eventmax)
+#endif
+
+#if EV_USE_IOCP || EV_GENWRAP
+VARx(HANDLE, iocp)
+#endif
+
+VARx(int *, fdchanges)
+VARx(int, fdchangemax)
+VARx(int, fdchangecnt)
+
+VARx(ANHE *, timers)
+VARx(int, timermax)
+VARx(int, timercnt)
+
+#if EV_PERIODIC_ENABLE || EV_GENWRAP
+VARx(ANHE *, periodics)
+VARx(int, periodicmax)
+VARx(int, periodiccnt)
+#endif
+
+#if EV_IDLE_ENABLE || EV_GENWRAP
+VAR (idles, ev_idle **idles [NUMPRI])
+VAR (idlemax, int idlemax [NUMPRI])
+VAR (idlecnt, int idlecnt [NUMPRI])
+#endif
+VARx(int, idleall) /* total number */
+
+VARx(struct ev_prepare **, prepares)
+VARx(int, preparemax)
+VARx(int, preparecnt)
+
+VARx(struct ev_check **, checks)
+VARx(int, checkmax)
+VARx(int, checkcnt)
+
+#if EV_FORK_ENABLE || EV_GENWRAP
+VARx(struct ev_fork **, forks)
+VARx(int, forkmax)
+VARx(int, forkcnt)
+#endif
+
+#if EV_CLEANUP_ENABLE || EV_GENWRAP
+VARx(struct ev_cleanup **, cleanups)
+VARx(int, cleanupmax)
+VARx(int, cleanupcnt)
+#endif
+
+#if EV_ASYNC_ENABLE || EV_GENWRAP
+VARx(EV_ATOMIC_T, async_pending)
+VARx(struct ev_async **, asyncs)
+VARx(int, asyncmax)
+VARx(int, asynccnt)
+#endif
+
+#if EV_USE_INOTIFY || EV_GENWRAP
+VARx(int, fs_fd)
+VARx(ev_io, fs_w)
+VARx(char, fs_2625) /* whether we are running in linux 2.6.25 or newer */
+VAR (fs_hash, ANFS fs_hash [EV_INOTIFY_HASHSIZE])
+#endif
+
+VARx(EV_ATOMIC_T, sig_pending)
+VARx(int, nosigmask)
+#if EV_USE_SIGNALFD || EV_GENWRAP
+VARx(int, sigfd)
+VARx(ev_io, sigfd_w)
+VARx(sigset_t, sigfd_set)
+#endif
+
+VARx(unsigned int, origflags) /* original loop flags */
+
+#if EV_FEATURE_API || EV_GENWRAP
+VARx(unsigned int, loop_count) /* total number of loop iterations/blocks */
+VARx(unsigned int, loop_depth) /* #ev_run enters - #ev_run leaves */
+
+VARx(void *, userdata)
+VAR (release_cb, void (*release_cb)(EV_P))
+VAR (acquire_cb, void (*acquire_cb)(EV_P))
+VAR (invoke_cb , void (*invoke_cb) (EV_P))
+#endif
+
+#undef VARx
+
--- /dev/null
+/*
+ * libev win32 compatibility cruft (_not_ a backend)
+ *
+ * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#ifdef _WIN32
+
+/* timeb.h is actually xsi legacy functionality */
+#include <sys/timeb.h>
+
+/* note: the comment below could not be substantiated, but what would I care */
+/* MSDN says this is required to handle SIGFPE */
+/* my wild guess would be that using something floating-pointy is required */
+/* for the crt to do something about it */
+volatile double SIGFPE_REQ = 0.0f;
+
+/* oh, the humanity! */
+static int
+ev_pipe (int filedes [2])
+{
+ struct sockaddr_in addr = { 0 };
+ int addr_size = sizeof (addr);
+ struct sockaddr_in adr2;
+ int adr2_size = sizeof (adr2);
+ SOCKET listener;
+ SOCKET sock [2] = { -1, -1 };
+
+ if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
+ return -1;
+
+ addr.sin_family = AF_INET;
+ addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
+ addr.sin_port = 0;
+
+ if (bind (listener, (struct sockaddr *)&addr, addr_size))
+ goto fail;
+
+ if (getsockname (listener, (struct sockaddr *)&addr, &addr_size))
+ goto fail;
+
+ if (listen (listener, 1))
+ goto fail;
+
+ if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
+ goto fail;
+
+ if (connect (sock [0], (struct sockaddr *)&addr, addr_size))
+ goto fail;
+
+ if ((sock [1] = accept (listener, 0, 0)) < 0)
+ goto fail;
+
+ /* windows vista returns fantasy port numbers for sockets:
+ * example for two interconnected tcp sockets:
+ *
+ * (Socket::unpack_sockaddr_in getsockname $sock0)[0] == 53364
+ * (Socket::unpack_sockaddr_in getpeername $sock0)[0] == 53363
+ * (Socket::unpack_sockaddr_in getsockname $sock1)[0] == 53363
+ * (Socket::unpack_sockaddr_in getpeername $sock1)[0] == 53365
+ *
+ * wow! tridirectional sockets!
+ *
+ * this way of checking ports seems to work:
+ */
+ if (getpeername (sock [0], (struct sockaddr *)&addr, &addr_size))
+ goto fail;
+
+ if (getsockname (sock [1], (struct sockaddr *)&adr2, &adr2_size))
+ goto fail;
+
+ errno = WSAEINVAL;
+ if (addr_size != adr2_size
+ || addr.sin_addr.s_addr != adr2.sin_addr.s_addr /* just to be sure, I mean, it's windows */
+ || addr.sin_port != adr2.sin_port)
+ goto fail;
+
+ closesocket (listener);
+
+#if EV_SELECT_IS_WINSOCKET
+ filedes [0] = EV_WIN32_HANDLE_TO_FD (sock [0]);
+ filedes [1] = EV_WIN32_HANDLE_TO_FD (sock [1]);
+#else
+ /* when select isn't winsocket, we also expect socket, connect, accept etc.
+ * to work on fds */
+ filedes [0] = sock [0];
+ filedes [1] = sock [1];
+#endif
+
+ return 0;
+
+fail:
+ closesocket (listener);
+
+ if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
+ if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
+
+ return -1;
+}
+
+#undef pipe
+#define pipe(filedes) ev_pipe (filedes)
+
+#define EV_HAVE_EV_TIME 1
+ev_tstamp
+ev_time (void)
+{
+ FILETIME ft;
+ ULARGE_INTEGER ui;
+
+ GetSystemTimeAsFileTime (&ft);
+ ui.u.LowPart = ft.dwLowDateTime;
+ ui.u.HighPart = ft.dwHighDateTime;
+
+ /* msvc cannot convert ulonglong to double... yes, it is that sucky */
+ return (LONGLONG)(ui.QuadPart - 116444736000000000) * 1e-7;
+}
+
+#endif
+
--- /dev/null
+/* DO NOT EDIT, automatically generated by update_ev_wrap */
+#ifndef EV_WRAP_H
+#define EV_WRAP_H
+#define now_floor ((loop)->now_floor)
+#define mn_now ((loop)->mn_now)
+#define rtmn_diff ((loop)->rtmn_diff)
+#define io_blocktime ((loop)->io_blocktime)
+#define timeout_blocktime ((loop)->timeout_blocktime)
+#define backend ((loop)->backend)
+#define activecnt ((loop)->activecnt)
+#define loop_done ((loop)->loop_done)
+#define backend_fd ((loop)->backend_fd)
+#define backend_fudge ((loop)->backend_fudge)
+#define backend_modify ((loop)->backend_modify)
+#define backend_poll ((loop)->backend_poll)
+#define anfds ((loop)->anfds)
+#define anfdmax ((loop)->anfdmax)
+#define pendings ((loop)->pendings)
+#define pendingmax ((loop)->pendingmax)
+#define pendingcnt ((loop)->pendingcnt)
+#define pending_w ((loop)->pending_w)
+#define rfeeds ((loop)->rfeeds)
+#define rfeedmax ((loop)->rfeedmax)
+#define rfeedcnt ((loop)->rfeedcnt)
+#define evfd ((loop)->evfd)
+#define evpipe ((loop)->evpipe)
+#define pipe_w ((loop)->pipe_w)
+#define curpid ((loop)->curpid)
+#define postfork ((loop)->postfork)
+#define vec_ri ((loop)->vec_ri)
+#define vec_ro ((loop)->vec_ro)
+#define vec_wi ((loop)->vec_wi)
+#define vec_wo ((loop)->vec_wo)
+#define vec_eo ((loop)->vec_eo)
+#define vec_max ((loop)->vec_max)
+#define polls ((loop)->polls)
+#define pollmax ((loop)->pollmax)
+#define pollcnt ((loop)->pollcnt)
+#define pollidxs ((loop)->pollidxs)
+#define pollidxmax ((loop)->pollidxmax)
+#define epoll_events ((loop)->epoll_events)
+#define epoll_eventmax ((loop)->epoll_eventmax)
+#define epoll_eperms ((loop)->epoll_eperms)
+#define epoll_epermcnt ((loop)->epoll_epermcnt)
+#define epoll_epermmax ((loop)->epoll_epermmax)
+#define kqueue_changes ((loop)->kqueue_changes)
+#define kqueue_changemax ((loop)->kqueue_changemax)
+#define kqueue_changecnt ((loop)->kqueue_changecnt)
+#define kqueue_events ((loop)->kqueue_events)
+#define kqueue_eventmax ((loop)->kqueue_eventmax)
+#define port_events ((loop)->port_events)
+#define port_eventmax ((loop)->port_eventmax)
+#define iocp ((loop)->iocp)
+#define fdchanges ((loop)->fdchanges)
+#define fdchangemax ((loop)->fdchangemax)
+#define fdchangecnt ((loop)->fdchangecnt)
+#define timers ((loop)->timers)
+#define timermax ((loop)->timermax)
+#define timercnt ((loop)->timercnt)
+#define periodics ((loop)->periodics)
+#define periodicmax ((loop)->periodicmax)
+#define periodiccnt ((loop)->periodiccnt)
+#define idles ((loop)->idles)
+#define idlemax ((loop)->idlemax)
+#define idlecnt ((loop)->idlecnt)
+#define idleall ((loop)->idleall)
+#define prepares ((loop)->prepares)
+#define preparemax ((loop)->preparemax)
+#define preparecnt ((loop)->preparecnt)
+#define checks ((loop)->checks)
+#define checkmax ((loop)->checkmax)
+#define checkcnt ((loop)->checkcnt)
+#define forks ((loop)->forks)
+#define forkmax ((loop)->forkmax)
+#define forkcnt ((loop)->forkcnt)
+#define cleanups ((loop)->cleanups)
+#define cleanupmax ((loop)->cleanupmax)
+#define cleanupcnt ((loop)->cleanupcnt)
+#define async_pending ((loop)->async_pending)
+#define asyncs ((loop)->asyncs)
+#define asyncmax ((loop)->asyncmax)
+#define asynccnt ((loop)->asynccnt)
+#define fs_fd ((loop)->fs_fd)
+#define fs_w ((loop)->fs_w)
+#define fs_2625 ((loop)->fs_2625)
+#define fs_hash ((loop)->fs_hash)
+#define sig_pending ((loop)->sig_pending)
+#define nosigmask ((loop)->nosigmask)
+#define sigfd ((loop)->sigfd)
+#define sigfd_w ((loop)->sigfd_w)
+#define sigfd_set ((loop)->sigfd_set)
+#define origflags ((loop)->origflags)
+#define loop_count ((loop)->loop_count)
+#define loop_depth ((loop)->loop_depth)
+#define userdata ((loop)->userdata)
+#define release_cb ((loop)->release_cb)
+#define acquire_cb ((loop)->acquire_cb)
+#define invoke_cb ((loop)->invoke_cb)
+#else
+#undef EV_WRAP_H
+#undef now_floor
+#undef mn_now
+#undef rtmn_diff
+#undef io_blocktime
+#undef timeout_blocktime
+#undef backend
+#undef activecnt
+#undef loop_done
+#undef backend_fd
+#undef backend_fudge
+#undef backend_modify
+#undef backend_poll
+#undef anfds
+#undef anfdmax
+#undef pendings
+#undef pendingmax
+#undef pendingcnt
+#undef pending_w
+#undef rfeeds
+#undef rfeedmax
+#undef rfeedcnt
+#undef evfd
+#undef evpipe
+#undef pipe_w
+#undef curpid
+#undef postfork
+#undef vec_ri
+#undef vec_ro
+#undef vec_wi
+#undef vec_wo
+#undef vec_eo
+#undef vec_max
+#undef polls
+#undef pollmax
+#undef pollcnt
+#undef pollidxs
+#undef pollidxmax
+#undef epoll_events
+#undef epoll_eventmax
+#undef epoll_eperms
+#undef epoll_epermcnt
+#undef epoll_epermmax
+#undef kqueue_changes
+#undef kqueue_changemax
+#undef kqueue_changecnt
+#undef kqueue_events
+#undef kqueue_eventmax
+#undef port_events
+#undef port_eventmax
+#undef iocp
+#undef fdchanges
+#undef fdchangemax
+#undef fdchangecnt
+#undef timers
+#undef timermax
+#undef timercnt
+#undef periodics
+#undef periodicmax
+#undef periodiccnt
+#undef idles
+#undef idlemax
+#undef idlecnt
+#undef idleall
+#undef prepares
+#undef preparemax
+#undef preparecnt
+#undef checks
+#undef checkmax
+#undef checkcnt
+#undef forks
+#undef forkmax
+#undef forkcnt
+#undef cleanups
+#undef cleanupmax
+#undef cleanupcnt
+#undef async_pending
+#undef asyncs
+#undef asyncmax
+#undef asynccnt
+#undef fs_fd
+#undef fs_w
+#undef fs_2625
+#undef fs_hash
+#undef sig_pending
+#undef nosigmask
+#undef sigfd
+#undef sigfd_w
+#undef sigfd_set
+#undef origflags
+#undef loop_count
+#undef loop_depth
+#undef userdata
+#undef release_cb
+#undef acquire_cb
+#undef invoke_cb
+#endif
--- /dev/null
+/*
+ * libevent compatibility layer
+ *
+ * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#ifdef EV_EVENT_H
+# include EV_EVENT_H
+#else
+# include "event.h"
+#endif
+
+#if EV_MULTIPLICITY
+# define dLOOPev struct ev_loop *loop = (struct ev_loop *)ev->ev_base
+# define dLOOPbase struct ev_loop *loop = (struct ev_loop *)base
+#else
+# define dLOOPev
+# define dLOOPbase
+#endif
+
+/* never accessed, will always be cast from/to ev_loop */
+struct event_base
+{
+ int dummy;
+};
+
+static struct event_base *ev_x_cur;
+
+static ev_tstamp
+ev_tv_get (struct timeval *tv)
+{
+ if (tv)
+ {
+ ev_tstamp after = tv->tv_sec + tv->tv_usec * 1e-6;
+ return after ? after : 1e-6;
+ }
+ else
+ return -1.;
+}
+
+#define EVENT_STRINGIFY(s) # s
+#define EVENT_VERSION(a,b) EVENT_STRINGIFY (a) "." EVENT_STRINGIFY (b)
+
+const char *event_get_version (void)
+{
+ /* returns ABI, not API or library, version */
+ return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR);
+}
+
+const char *event_get_method (void)
+{
+ return "libev";
+}
+
+void *event_init (void)
+{
+#if EV_MULTIPLICITY
+ if (ev_x_cur)
+ ev_x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
+ else
+ ev_x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
+#else
+ assert (("libev: multiple event bases not supported when not compiled with EV_MULTIPLICITY", !ev_x_cur));
+
+ ev_x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
+#endif
+
+ return ev_x_cur;
+}
+
+void event_base_free (struct event_base *base)
+{
+ dLOOPbase;
+
+#if EV_MULTIPLICITY
+ if (!ev_is_default_loop (loop))
+ ev_loop_destroy (loop);
+#endif
+}
+
+int event_dispatch (void)
+{
+ return event_base_dispatch (ev_x_cur);
+}
+
+#ifdef EV_STANDALONE
+void event_set_log_callback (event_log_cb cb)
+{
+ /* nop */
+}
+#endif
+
+int event_loop (int flags)
+{
+ return event_base_loop (ev_x_cur, flags);
+}
+
+int event_loopexit (struct timeval *tv)
+{
+ return event_base_loopexit (ev_x_cur, tv);
+}
+
+static void
+ev_x_cb (struct event *ev, int revents)
+{
+ revents &= EV_READ | EV_WRITE | EV_TIMER | EV_SIGNAL;
+
+ ev->ev_res = revents;
+ ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
+}
+
+static void
+ev_x_cb_sig (EV_P_ struct ev_signal *w, int revents)
+{
+ struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.sig));
+
+ if (revents & EV_ERROR)
+ event_del (ev);
+
+ ev_x_cb (ev, revents);
+}
+
+static void
+ev_x_cb_io (EV_P_ struct ev_io *w, int revents)
+{
+ struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io));
+
+ if ((revents & EV_ERROR) || !(ev->ev_events & EV_PERSIST))
+ event_del (ev);
+
+ ev_x_cb (ev, revents);
+}
+
+static void
+ev_x_cb_to (EV_P_ struct ev_timer *w, int revents)
+{
+ struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, to));
+
+ event_del (ev);
+
+ ev_x_cb (ev, revents);
+}
+
+void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg)
+{
+ if (events & EV_SIGNAL)
+ ev_init (&ev->iosig.sig, ev_x_cb_sig);
+ else
+ ev_init (&ev->iosig.io, ev_x_cb_io);
+
+ ev_init (&ev->to, ev_x_cb_to);
+
+ ev->ev_base = ev_x_cur; /* not threadsafe, but it's how libevent works */
+ ev->ev_fd = fd;
+ ev->ev_events = events;
+ ev->ev_pri = 0;
+ ev->ev_callback = cb;
+ ev->ev_arg = arg;
+ ev->ev_res = 0;
+ ev->ev_flags = EVLIST_INIT;
+}
+
+int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
+{
+ return event_base_once (ev_x_cur, fd, events, cb, arg, tv);
+}
+
+int event_add (struct event *ev, struct timeval *tv)
+{
+ dLOOPev;
+
+ if (ev->ev_events & EV_SIGNAL)
+ {
+ if (!ev_is_active (&ev->iosig.sig))
+ {
+ ev_signal_set (&ev->iosig.sig, ev->ev_fd);
+ ev_signal_start (EV_A_ &ev->iosig.sig);
+
+ ev->ev_flags |= EVLIST_SIGNAL;
+ }
+ }
+ else if (ev->ev_events & (EV_READ | EV_WRITE))
+ {
+ if (!ev_is_active (&ev->iosig.io))
+ {
+ ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE));
+ ev_io_start (EV_A_ &ev->iosig.io);
+
+ ev->ev_flags |= EVLIST_INSERTED;
+ }
+ }
+
+ if (tv)
+ {
+ ev->to.repeat = ev_tv_get (tv);
+ ev_timer_again (EV_A_ &ev->to);
+ ev->ev_flags |= EVLIST_TIMEOUT;
+ }
+ else
+ {
+ ev_timer_stop (EV_A_ &ev->to);
+ ev->ev_flags &= ~EVLIST_TIMEOUT;
+ }
+
+ ev->ev_flags |= EVLIST_ACTIVE;
+
+ return 0;
+}
+
+int event_del (struct event *ev)
+{
+ dLOOPev;
+
+ if (ev->ev_events & EV_SIGNAL)
+ ev_signal_stop (EV_A_ &ev->iosig.sig);
+ else if (ev->ev_events & (EV_READ | EV_WRITE))
+ ev_io_stop (EV_A_ &ev->iosig.io);
+
+ if (ev_is_active (&ev->to))
+ ev_timer_stop (EV_A_ &ev->to);
+
+ ev->ev_flags = EVLIST_INIT;
+
+ return 0;
+}
+
+void event_active (struct event *ev, int res, short ncalls)
+{
+ dLOOPev;
+
+ if (res & EV_TIMEOUT)
+ ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);
+
+ if (res & EV_SIGNAL)
+ ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);
+
+ if (res & (EV_READ | EV_WRITE))
+ ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ | EV_WRITE));
+}
+
+int event_pending (struct event *ev, short events, struct timeval *tv)
+{
+ short revents = 0;
+ dLOOPev;
+
+ if (ev->ev_events & EV_SIGNAL)
+ {
+ /* sig */
+ if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig))
+ revents |= EV_SIGNAL;
+ }
+ else if (ev->ev_events & (EV_READ | EV_WRITE))
+ {
+ /* io */
+ if (ev_is_active (&ev->iosig.io) || ev_is_pending (&ev->iosig.io))
+ revents |= ev->ev_events & (EV_READ | EV_WRITE);
+ }
+
+ if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to))
+ {
+ revents |= EV_TIMEOUT;
+
+ if (tv)
+ {
+ ev_tstamp at = ev_now (EV_A);
+
+ tv->tv_sec = (long)at;
+ tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6);
+ }
+ }
+
+ return events & revents;
+}
+
+int event_priority_init (int npri)
+{
+ return event_base_priority_init (ev_x_cur, npri);
+}
+
+int event_priority_set (struct event *ev, int pri)
+{
+ ev->ev_pri = pri;
+
+ return 0;
+}
+
+int event_base_set (struct event_base *base, struct event *ev)
+{
+ ev->ev_base = base;
+
+ return 0;
+}
+
+int event_base_loop (struct event_base *base, int flags)
+{
+ dLOOPbase;
+
+ ev_run (EV_A_ flags);
+
+ return 0;
+}
+
+int event_base_dispatch (struct event_base *base)
+{
+ return event_base_loop (base, 0);
+}
+
+static void
+ev_x_loopexit_cb (int revents, void *base)
+{
+ dLOOPbase;
+
+ ev_break (EV_A_ EVBREAK_ONE);
+}
+
+int event_base_loopexit (struct event_base *base, struct timeval *tv)
+{
+ ev_tstamp after = ev_tv_get (tv);
+ dLOOPbase;
+
+ ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., ev_x_loopexit_cb, (void *)base);
+
+ return 0;
+}
+
+struct ev_x_once
+{
+ int fd;
+ void (*cb)(int, short, void *);
+ void *arg;
+};
+
+static void
+ev_x_once_cb (int revents, void *arg)
+{
+ struct ev_x_once *once = (struct ev_x_once *)arg;
+
+ once->cb (once->fd, (short)revents, once->arg);
+ free (once);
+}
+
+int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
+{
+ struct ev_x_once *once = (struct ev_x_once *)malloc (sizeof (struct ev_x_once));
+ dLOOPbase;
+
+ if (!once)
+ return -1;
+
+ once->fd = fd;
+ once->cb = cb;
+ once->arg = arg;
+
+ ev_once (EV_A_ fd, events & (EV_READ | EV_WRITE), ev_tv_get (tv), ev_x_once_cb, (void *)once);
+
+ return 0;
+}
+
+int event_base_priority_init (struct event_base *base, int npri)
+{
+ /*dLOOPbase;*/
+
+ return 0;
+}
+
--- /dev/null
+/*
+ * libevent compatibility header, only core events supported
+ *
+ * Copyright (c) 2007,2008,2010 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#ifndef EVENT_H_
+#define EVENT_H_
+
+#ifdef EV_H
+# include EV_H
+#else
+# include "ev.h"
+#endif
+
+#ifndef EVLOOP_NONBLOCK
+# define EVLOOP_NONBLOCK EVRUN_NOWAIT
+#endif
+#ifndef EVLOOP_ONESHOT
+# define EVLOOP_ONESHOT EVRUN_ONCE
+#endif
+#ifndef EV_TIMEOUT
+# define EV_TIMEOUT EV_TIMER
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* we need sys/time.h for struct timeval only */
+#if !defined (WIN32) || defined (__MINGW32__)
+# include <time.h> /* mingw seems to need this, for whatever reason */
+# include <sys/time.h>
+#endif
+
+struct event_base;
+
+#define EVLIST_TIMEOUT 0x01
+#define EVLIST_INSERTED 0x02
+#define EVLIST_SIGNAL 0x04
+#define EVLIST_ACTIVE 0x08
+#define EVLIST_INTERNAL 0x10
+#define EVLIST_INIT 0x80
+
+struct event
+{
+ /* libev watchers we map onto */
+ union {
+ struct ev_io io;
+ struct ev_signal sig;
+ } iosig;
+ struct ev_timer to;
+
+ /* compatibility slots */
+ struct event_base *ev_base;
+ void (*ev_callback)(int, short, void *arg);
+ void *ev_arg;
+ int ev_fd;
+ int ev_pri;
+ int ev_res;
+ int ev_flags;
+ short ev_events;
+};
+
+#define EV_READ EV_READ
+#define EV_WRITE EV_WRITE
+#define EV_PERSIST 0x10
+
+#define EVENT_SIGNAL(ev) ((int) (ev)->ev_fd)
+#define EVENT_FD(ev) ((int) (ev)->ev_fd)
+
+#define event_initialized(ev) ((ev)->ev_flags & EVLIST_INIT)
+
+#define evtimer_add(ev,tv) event_add (ev, tv)
+#define evtimer_set(ev,cb,data) event_set (ev, -1, 0, cb, data)
+#define evtimer_del(ev) event_del (ev)
+#define evtimer_pending(ev,tv) event_pending (ev, EV_TIMEOUT, tv)
+#define evtimer_initialized(ev) event_initialized (ev)
+
+#define timeout_add(ev,tv) evtimer_add (ev, tv)
+#define timeout_set(ev,cb,data) evtimer_set (ev, cb, data)
+#define timeout_del(ev) evtimer_del (ev)
+#define timeout_pending(ev,tv) evtimer_pending (ev, tv)
+#define timeout_initialized(ev) evtimer_initialized (ev)
+
+#define signal_add(ev,tv) event_add (ev, tv)
+#define signal_set(ev,sig,cb,data) event_set (ev, sig, EV_SIGNAL | EV_PERSIST, cb, data)
+#define signal_del(ev) event_del (ev)
+#define signal_pending(ev,tv) event_pending (ev, EV_SIGNAL, tv)
+#define signal_initialized(ev) event_initialized (ev)
+
+const char *event_get_version (void);
+const char *event_get_method (void);
+
+void *event_init (void);
+void event_base_free (struct event_base *base);
+
+#define EVLOOP_ONCE EVLOOP_ONESHOT
+int event_loop (int);
+int event_loopexit (struct timeval *tv);
+int event_dispatch (void);
+
+#define _EVENT_LOG_DEBUG 0
+#define _EVENT_LOG_MSG 1
+#define _EVENT_LOG_WARN 2
+#define _EVENT_LOG_ERR 3
+typedef void (*event_log_cb)(int severity, const char *msg);
+void event_set_log_callback(event_log_cb cb);
+
+void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg);
+int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv);
+
+int event_add (struct event *ev, struct timeval *tv);
+int event_del (struct event *ev);
+void event_active (struct event *ev, int res, short ncalls); /* ncalls is being ignored */
+
+int event_pending (struct event *ev, short, struct timeval *tv);
+
+int event_priority_init (int npri);
+int event_priority_set (struct event *ev, int pri);
+
+int event_base_set (struct event_base *base, struct event *ev);
+int event_base_loop (struct event_base *base, int);
+int event_base_loopexit (struct event_base *base, struct timeval *tv);
+int event_base_dispatch (struct event_base *base);
+int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv);
+int event_base_priority_init (struct event_base *base, int fd);
+
+/* next line is different in the libevent+libev version */
+/*libevent-include*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
--- /dev/null
+#!/bin/sh
+#
+# install - install a program, script, or datafile
+#
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
+#
+# Copyright (C) 1994 X Consortium
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# `make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch. It can only install one file at a time, a restriction
+# shared with many OS's install programs.
+
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit="${DOITPROG-}"
+
+
+# put in absolute paths if you don't have them in your path; or use env. vars.
+
+mvprog="${MVPROG-mv}"
+cpprog="${CPPROG-cp}"
+chmodprog="${CHMODPROG-chmod}"
+chownprog="${CHOWNPROG-chown}"
+chgrpprog="${CHGRPPROG-chgrp}"
+stripprog="${STRIPPROG-strip}"
+rmprog="${RMPROG-rm}"
+mkdirprog="${MKDIRPROG-mkdir}"
+
+transformbasename=""
+transform_arg=""
+instcmd="$mvprog"
+chmodcmd="$chmodprog 0755"
+chowncmd=""
+chgrpcmd=""
+stripcmd=""
+rmcmd="$rmprog -f"
+mvcmd="$mvprog"
+src=""
+dst=""
+dir_arg=""
+
+while [ x"$1" != x ]; do
+ case $1 in
+ -c) instcmd=$cpprog
+ shift
+ continue;;
+
+ -d) dir_arg=true
+ shift
+ continue;;
+
+ -m) chmodcmd="$chmodprog $2"
+ shift
+ shift
+ continue;;
+
+ -o) chowncmd="$chownprog $2"
+ shift
+ shift
+ continue;;
+
+ -g) chgrpcmd="$chgrpprog $2"
+ shift
+ shift
+ continue;;
+
+ -s) stripcmd=$stripprog
+ shift
+ continue;;
+
+ -t=*) transformarg=`echo $1 | sed 's/-t=//'`
+ shift
+ continue;;
+
+ -b=*) transformbasename=`echo $1 | sed 's/-b=//'`
+ shift
+ continue;;
+
+ *) if [ x"$src" = x ]
+ then
+ src=$1
+ else
+ # this colon is to work around a 386BSD /bin/sh bug
+ :
+ dst=$1
+ fi
+ shift
+ continue;;
+ esac
+done
+
+if [ x"$src" = x ]
+then
+ echo "$0: no input file specified" >&2
+ exit 1
+else
+ :
+fi
+
+if [ x"$dir_arg" != x ]; then
+ dst=$src
+ src=""
+
+ if [ -d "$dst" ]; then
+ instcmd=:
+ chmodcmd=""
+ else
+ instcmd=$mkdirprog
+ fi
+else
+
+# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
+# might cause directories to be created, which would be especially bad
+# if $src (and thus $dsttmp) contains '*'.
+
+ if [ -f "$src" ] || [ -d "$src" ]
+ then
+ :
+ else
+ echo "$0: $src does not exist" >&2
+ exit 1
+ fi
+
+ if [ x"$dst" = x ]
+ then
+ echo "$0: no destination specified" >&2
+ exit 1
+ else
+ :
+ fi
+
+# If destination is a directory, append the input filename; if your system
+# does not like double slashes in filenames, you may need to add some logic
+
+ if [ -d "$dst" ]
+ then
+ dst=$dst/`basename "$src"`
+ else
+ :
+ fi
+fi
+
+## this sed command emulates the dirname command
+dstdir=`echo "$dst" | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
+
+# Make sure that the destination directory exists.
+# this part is taken from Noah Friedman's mkinstalldirs script
+
+# Skip lots of stat calls in the usual case.
+if [ ! -d "$dstdir" ]; then
+defaultIFS='
+ '
+IFS="${IFS-$defaultIFS}"
+
+oIFS=$IFS
+# Some sh's can't handle IFS=/ for some reason.
+IFS='%'
+set - `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`
+IFS=$oIFS
+
+pathcomp=''
+
+while [ $# -ne 0 ] ; do
+ pathcomp=$pathcomp$1
+ shift
+
+ if [ ! -d "$pathcomp" ] ;
+ then
+ $mkdirprog "$pathcomp"
+ else
+ :
+ fi
+
+ pathcomp=$pathcomp/
+done
+fi
+
+if [ x"$dir_arg" != x ]
+then
+ $doit $instcmd "$dst" &&
+
+ if [ x"$chowncmd" != x ]; then $doit $chowncmd "$dst"; else : ; fi &&
+ if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dst"; else : ; fi &&
+ if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dst"; else : ; fi &&
+ if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dst"; else : ; fi
+else
+
+# If we're going to rename the final executable, determine the name now.
+
+ if [ x"$transformarg" = x ]
+ then
+ dstfile=`basename "$dst"`
+ else
+ dstfile=`basename "$dst" $transformbasename |
+ sed $transformarg`$transformbasename
+ fi
+
+# don't allow the sed command to completely eliminate the filename
+
+ if [ x"$dstfile" = x ]
+ then
+ dstfile=`basename "$dst"`
+ else
+ :
+ fi
+
+# Make a couple of temp file names in the proper directory.
+
+ dsttmp=$dstdir/_inst.$$_
+ rmtmp=$dstdir/_rm.$$_
+
+# Trap to clean up temp files at exit.
+
+ trap 'status=$?; rm -f "$dsttmp" "$rmtmp" && exit $status' 0
+ trap '(exit $?); exit' 1 2 13 15
+
+# Move or copy the file name to the temp name
+
+ $doit $instcmd "$src" "$dsttmp" &&
+
+# and set any options; do chmod last to preserve setuid bits
+
+# If any of these fail, we abort the whole thing. If we want to
+# ignore errors from any of these, just make sure not to ignore
+# errors from the above "$doit $instcmd $src $dsttmp" command.
+
+ if [ x"$chowncmd" != x ]; then $doit $chowncmd "$dsttmp"; else :;fi &&
+ if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dsttmp"; else :;fi &&
+ if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dsttmp"; else :;fi &&
+ if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dsttmp"; else :;fi &&
+
+# Now remove or move aside any old file at destination location. We try this
+# two ways since rm can't unlink itself on some systems and the destination
+# file might be busy for other reasons. In this case, the final cleanup
+# might fail but the new file should still install successfully.
+
+{
+ if [ -f "$dstdir/$dstfile" ]
+ then
+ $doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null ||
+ $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null ||
+ {
+ echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2
+ (exit 1); exit
+ }
+ else
+ :
+ fi
+} &&
+
+# Now rename the file to the real destination.
+
+ $doit $mvcmd "$dsttmp" "$dstdir/$dstfile"
+
+fi &&
+
+# The final little trick to "correctly" pass the exit status to the exit trap.
+
+{
+ (exit 0); exit
+}
--- /dev/null
+dnl this file is part of libev, do not make local modifications
+dnl http://software.schmorp.de/pkg/libev
+
+dnl libev support
+AC_CHECK_HEADERS(sys/inotify.h sys/epoll.h sys/event.h port.h poll.h sys/select.h sys/eventfd.h sys/signalfd.h)
+
+AC_CHECK_FUNCS(inotify_init epoll_ctl kqueue port_create poll select eventfd signalfd)
+
+AC_CHECK_FUNCS(clock_gettime, [], [
+ dnl on linux, try syscall wrapper first
+ if test $(uname) = Linux; then
+ AC_MSG_CHECKING(for clock_gettime syscall)
+ AC_LINK_IFELSE([AC_LANG_PROGRAM(
+ [#include <unistd.h>
+ #include <sys/syscall.h>
+ #include <time.h>],
+ [struct timespec ts; int status = syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts)])],
+ [ac_have_clock_syscall=1
+ AC_DEFINE(HAVE_CLOCK_SYSCALL, 1, "use syscall interface for clock_gettime")
+ AC_MSG_RESULT(yes)],
+ [AC_MSG_RESULT(no)])
+ fi
+ if test -z "$LIBEV_M4_AVOID_LIBRT" && test -z "$ac_have_clock_syscall"; then
+ AC_CHECK_LIB(rt, clock_gettime)
+ unset ac_cv_func_clock_gettime
+ AC_CHECK_FUNCS(clock_gettime)
+ fi
+])
+
+AC_CHECK_FUNCS(nanosleep, [], [
+ if test -z "$LIBEV_M4_AVOID_LIBRT"; then
+ AC_CHECK_LIB(rt, nanosleep)
+ unset ac_cv_func_nanosleep
+ AC_CHECK_FUNCS(nanosleep)
+ fi
+])
+
+AC_CHECK_LIB(m, ceil)
+
--- /dev/null
+# Generated from ltmain.m4sh.
+
+# ltmain.sh (GNU libtool) 2.2.6b
+# Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007 2008 Free Software Foundation, Inc.
+# This is free software; see the source for copying conditions. There is NO
+# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+# GNU Libtool is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING. If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html,
+# or obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+# Usage: $progname [OPTION]... [MODE-ARG]...
+#
+# Provide generalized library-building support services.
+#
+# --config show all configuration variables
+# --debug enable verbose shell tracing
+# -n, --dry-run display commands without modifying any files
+# --features display basic configuration information and exit
+# --mode=MODE use operation mode MODE
+# --preserve-dup-deps don't remove duplicate dependency libraries
+# --quiet, --silent don't print informational messages
+# --tag=TAG use configuration variables from tag TAG
+# -v, --verbose print informational messages (default)
+# --version print version information
+# -h, --help print short or long help message
+#
+# MODE must be one of the following:
+#
+# clean remove files from the build directory
+# compile compile a source file into a libtool object
+# execute automatically set library path, then run a program
+# finish complete the installation of libtool libraries
+# install install libraries or executables
+# link create a library or an executable
+# uninstall remove libraries from an installed directory
+#
+# MODE-ARGS vary depending on the MODE.
+# Try `$progname --help --mode=MODE' for a more detailed description of MODE.
+#
+# When reporting a bug, please describe a test case to reproduce it and
+# include the following information:
+#
+# host-triplet: $host
+# shell: $SHELL
+# compiler: $LTCC
+# compiler flags: $LTCFLAGS
+# linker: $LD (gnu? $with_gnu_ld)
+# $progname: (GNU libtool) 2.2.6b Debian-2.2.6b-2
+# automake: $automake_version
+# autoconf: $autoconf_version
+#
+# Report bugs to <bug-libtool@gnu.org>.
+
+PROGRAM=ltmain.sh
+PACKAGE=libtool
+VERSION="2.2.6b Debian-2.2.6b-2"
+TIMESTAMP=""
+package_revision=1.3017
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+ emulate sh
+ NULLCMD=:
+ # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '${1+"$@"}'='"$@"'
+ setopt NO_GLOB_SUBST
+else
+ case `(set -o) 2>/dev/null` in *posix*) set -o posix;; esac
+fi
+BIN_SH=xpg4; export BIN_SH # for Tru64
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# NLS nuisances: We save the old values to restore during execute mode.
+# Only set LANG and LC_ALL to C if already set.
+# These must not be set unconditionally because not all systems understand
+# e.g. LANG=C (notably SCO).
+lt_user_locale=
+lt_safe_locale=
+for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
+do
+ eval "if test \"\${$lt_var+set}\" = set; then
+ save_$lt_var=\$$lt_var
+ $lt_var=C
+ export $lt_var
+ lt_user_locale=\"$lt_var=\\\$save_\$lt_var; \$lt_user_locale\"
+ lt_safe_locale=\"$lt_var=C; \$lt_safe_locale\"
+ fi"
+done
+
+$lt_unset CDPATH
+
+
+
+
+
+: ${CP="cp -f"}
+: ${ECHO="echo"}
+: ${EGREP="/bin/grep -E"}
+: ${FGREP="/bin/grep -F"}
+: ${GREP="/bin/grep"}
+: ${LN_S="ln -s"}
+: ${MAKE="make"}
+: ${MKDIR="mkdir"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+: ${SED="/bin/sed"}
+: ${SHELL="${CONFIG_SHELL-/bin/sh}"}
+: ${Xsed="$SED -e 1s/^X//"}
+
+# Global variables:
+EXIT_SUCCESS=0
+EXIT_FAILURE=1
+EXIT_MISMATCH=63 # $? = 63 is used to indicate version mismatch to missing.
+EXIT_SKIP=77 # $? = 77 is used to indicate a skipped test to automake.
+
+exit_status=$EXIT_SUCCESS
+
+# Make sure IFS has a sensible default
+lt_nl='
+'
+IFS=" $lt_nl"
+
+dirname="s,/[^/]*$,,"
+basename="s,^.*/,,"
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+# dirname: Compute the dirname of FILE. If nonempty,
+# add APPEND to the result, otherwise set result
+# to NONDIR_REPLACEMENT.
+# value returned in "$func_dirname_result"
+# basename: Compute filename of FILE.
+# value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+ # Extract subdirectory from the argument.
+ func_dirname_result=`$ECHO "X${1}" | $Xsed -e "$dirname"`
+ if test "X$func_dirname_result" = "X${1}"; then
+ func_dirname_result="${3}"
+ else
+ func_dirname_result="$func_dirname_result${2}"
+ fi
+ func_basename_result=`$ECHO "X${1}" | $Xsed -e "$basename"`
+}
+
+# Generated shell functions inserted here.
+
+# Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh
+# is ksh but when the shell is invoked as "sh" and the current value of
+# the _XPG environment variable is not equal to 1 (one), the special
+# positional parameter $0, within a function call, is the name of the
+# function.
+progpath="$0"
+
+# The name of this program:
+# In the unlikely event $progname began with a '-', it would play havoc with
+# func_echo (imagine progname=-n), so we prepend ./ in that case:
+func_dirname_and_basename "$progpath"
+progname=$func_basename_result
+case $progname in
+ -*) progname=./$progname ;;
+esac
+
+# Make sure we have an absolute path for reexecution:
+case $progpath in
+ [\\/]*|[A-Za-z]:\\*) ;;
+ *[\\/]*)
+ progdir=$func_dirname_result
+ progdir=`cd "$progdir" && pwd`
+ progpath="$progdir/$progname"
+ ;;
+ *)
+ save_IFS="$IFS"
+ IFS=:
+ for progdir in $PATH; do
+ IFS="$save_IFS"
+ test -x "$progdir/$progname" && break
+ done
+ IFS="$save_IFS"
+ test -n "$progdir" || progdir=`pwd`
+ progpath="$progdir/$progname"
+ ;;
+esac
+
+# Sed substitution that helps us do robust quoting. It backslashifies
+# metacharacters that are still active within double-quoted strings.
+Xsed="${SED}"' -e 1s/^X//'
+sed_quote_subst='s/\([`"$\\]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\(["`\\]\)/\\\1/g'
+
+# Re-`\' parameter expansions in output of double_quote_subst that were
+# `\'-ed in input to the same. If an odd number of `\' preceded a '$'
+# in input to double_quote_subst, that '$' was protected from expansion.
+# Since each input `\' is now two `\'s, look for any number of runs of
+# four `\'s followed by two `\'s and then a '$'. `\' that '$'.
+bs='\\'
+bs2='\\\\'
+bs4='\\\\\\\\'
+dollar='\$'
+sed_double_backslash="\
+ s/$bs4/&\\
+/g
+ s/^$bs2$dollar/$bs&/
+ s/\\([^$bs]\\)$bs2$dollar/\\1$bs2$bs$dollar/g
+ s/\n//g"
+
+# Standard options:
+opt_dry_run=false
+opt_help=false
+opt_quiet=false
+opt_verbose=false
+opt_warning=:
+
+# func_echo arg...
+# Echo program name prefixed message, along with the current mode
+# name if it has been set yet.
+func_echo ()
+{
+ $ECHO "$progname${mode+: }$mode: $*"
+}
+
+# func_verbose arg...
+# Echo program name prefixed message in verbose mode only.
+func_verbose ()
+{
+ $opt_verbose && func_echo ${1+"$@"}
+
+ # A bug in bash halts the script if the last line of a function
+ # fails when set -e is in force, so we need another command to
+ # work around that:
+ :
+}
+
+# func_error arg...
+# Echo program name prefixed message to standard error.
+func_error ()
+{
+ $ECHO "$progname${mode+: }$mode: "${1+"$@"} 1>&2
+}
+
+# func_warning arg...
+# Echo program name prefixed warning message to standard error.
+func_warning ()
+{
+ $opt_warning && $ECHO "$progname${mode+: }$mode: warning: "${1+"$@"} 1>&2
+
+ # bash bug again:
+ :
+}
+
+# func_fatal_error arg...
+# Echo program name prefixed message to standard error, and exit.
+func_fatal_error ()
+{
+ func_error ${1+"$@"}
+ exit $EXIT_FAILURE
+}
+
+# func_fatal_help arg...
+# Echo program name prefixed message to standard error, followed by
+# a help hint, and exit.
+func_fatal_help ()
+{
+ func_error ${1+"$@"}
+ func_fatal_error "$help"
+}
+help="Try \`$progname --help' for more information." ## default
+
+
+# func_grep expression filename
+# Check whether EXPRESSION matches any line of FILENAME, without output.
+func_grep ()
+{
+ $GREP "$1" "$2" >/dev/null 2>&1
+}
+
+
+# func_mkdir_p directory-path
+# Make sure the entire path to DIRECTORY-PATH is available.
+func_mkdir_p ()
+{
+ my_directory_path="$1"
+ my_dir_list=
+
+ if test -n "$my_directory_path" && test "$opt_dry_run" != ":"; then
+
+ # Protect directory names starting with `-'
+ case $my_directory_path in
+ -*) my_directory_path="./$my_directory_path" ;;
+ esac
+
+ # While some portion of DIR does not yet exist...
+ while test ! -d "$my_directory_path"; do
+ # ...make a list in topmost first order. Use a colon delimited
+ # list incase some portion of path contains whitespace.
+ my_dir_list="$my_directory_path:$my_dir_list"
+
+ # If the last portion added has no slash in it, the list is done
+ case $my_directory_path in */*) ;; *) break ;; esac
+
+ # ...otherwise throw away the child directory and loop
+ my_directory_path=`$ECHO "X$my_directory_path" | $Xsed -e "$dirname"`
+ done
+ my_dir_list=`$ECHO "X$my_dir_list" | $Xsed -e 's,:*$,,'`
+
+ save_mkdir_p_IFS="$IFS"; IFS=':'
+ for my_dir in $my_dir_list; do
+ IFS="$save_mkdir_p_IFS"
+ # mkdir can fail with a `File exist' error if two processes
+ # try to create one of the directories concurrently. Don't
+ # stop in that case!
+ $MKDIR "$my_dir" 2>/dev/null || :
+ done
+ IFS="$save_mkdir_p_IFS"
+
+ # Bail out if we (or some other process) failed to create a directory.
+ test -d "$my_directory_path" || \
+ func_fatal_error "Failed to create \`$1'"
+ fi
+}
+
+
+# func_mktempdir [string]
+# Make a temporary directory that won't clash with other running
+# libtool processes, and avoids race conditions if possible. If
+# given, STRING is the basename for that directory.
+func_mktempdir ()
+{
+ my_template="${TMPDIR-/tmp}/${1-$progname}"
+
+ if test "$opt_dry_run" = ":"; then
+ # Return a directory name, but don't create it in dry-run mode
+ my_tmpdir="${my_template}-$$"
+ else
+
+ # If mktemp works, use that first and foremost
+ my_tmpdir=`mktemp -d "${my_template}-XXXXXXXX" 2>/dev/null`
+
+ if test ! -d "$my_tmpdir"; then
+ # Failing that, at least try and use $RANDOM to avoid a race
+ my_tmpdir="${my_template}-${RANDOM-0}$$"
+
+ save_mktempdir_umask=`umask`
+ umask 0077
+ $MKDIR "$my_tmpdir"
+ umask $save_mktempdir_umask
+ fi
+
+ # If we're not in dry-run mode, bomb out on failure
+ test -d "$my_tmpdir" || \
+ func_fatal_error "cannot create temporary directory \`$my_tmpdir'"
+ fi
+
+ $ECHO "X$my_tmpdir" | $Xsed
+}
+
+
+# func_quote_for_eval arg
+# Aesthetically quote ARG to be evaled later.
+# This function returns two values: FUNC_QUOTE_FOR_EVAL_RESULT
+# is double-quoted, suitable for a subsequent eval, whereas
+# FUNC_QUOTE_FOR_EVAL_UNQUOTED_RESULT has merely all characters
+# which are still active within double quotes backslashified.
+func_quote_for_eval ()
+{
+ case $1 in
+ *[\\\`\"\$]*)
+ func_quote_for_eval_unquoted_result=`$ECHO "X$1" | $Xsed -e "$sed_quote_subst"` ;;
+ *)
+ func_quote_for_eval_unquoted_result="$1" ;;
+ esac
+
+ case $func_quote_for_eval_unquoted_result in
+ # Double-quote args containing shell metacharacters to delay
+ # word splitting, command substitution and and variable
+ # expansion for a subsequent eval.
+ # Many Bourne shells cannot handle close brackets correctly
+ # in scan sets, so we specify it separately.
+ *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"")
+ func_quote_for_eval_result="\"$func_quote_for_eval_unquoted_result\""
+ ;;
+ *)
+ func_quote_for_eval_result="$func_quote_for_eval_unquoted_result"
+ esac
+}
+
+
+# func_quote_for_expand arg
+# Aesthetically quote ARG to be evaled later; same as above,
+# but do not quote variable references.
+func_quote_for_expand ()
+{
+ case $1 in
+ *[\\\`\"]*)
+ my_arg=`$ECHO "X$1" | $Xsed \
+ -e "$double_quote_subst" -e "$sed_double_backslash"` ;;
+ *)
+ my_arg="$1" ;;
+ esac
+
+ case $my_arg in
+ # Double-quote args containing shell metacharacters to delay
+ # word splitting and command substitution for a subsequent eval.
+ # Many Bourne shells cannot handle close brackets correctly
+ # in scan sets, so we specify it separately.
+ *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"")
+ my_arg="\"$my_arg\""
+ ;;
+ esac
+
+ func_quote_for_expand_result="$my_arg"
+}
+
+
+# func_show_eval cmd [fail_exp]
+# Unless opt_silent is true, then output CMD. Then, if opt_dryrun is
+# not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP
+# is given, then evaluate it.
+func_show_eval ()
+{
+ my_cmd="$1"
+ my_fail_exp="${2-:}"
+
+ ${opt_silent-false} || {
+ func_quote_for_expand "$my_cmd"
+ eval "func_echo $func_quote_for_expand_result"
+ }
+
+ if ${opt_dry_run-false}; then :; else
+ eval "$my_cmd"
+ my_status=$?
+ if test "$my_status" -eq 0; then :; else
+ eval "(exit $my_status); $my_fail_exp"
+ fi
+ fi
+}
+
+
+# func_show_eval_locale cmd [fail_exp]
+# Unless opt_silent is true, then output CMD. Then, if opt_dryrun is
+# not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP
+# is given, then evaluate it. Use the saved locale for evaluation.
+func_show_eval_locale ()
+{
+ my_cmd="$1"
+ my_fail_exp="${2-:}"
+
+ ${opt_silent-false} || {
+ func_quote_for_expand "$my_cmd"
+ eval "func_echo $func_quote_for_expand_result"
+ }
+
+ if ${opt_dry_run-false}; then :; else
+ eval "$lt_user_locale
+ $my_cmd"
+ my_status=$?
+ eval "$lt_safe_locale"
+ if test "$my_status" -eq 0; then :; else
+ eval "(exit $my_status); $my_fail_exp"
+ fi
+ fi
+}
+
+
+
+
+
+# func_version
+# Echo version message to standard output and exit.
+func_version ()
+{
+ $SED -n '/^# '$PROGRAM' (GNU /,/# warranty; / {
+ s/^# //
+ s/^# *$//
+ s/\((C)\)[ 0-9,-]*\( [1-9][0-9]*\)/\1\2/
+ p
+ }' < "$progpath"
+ exit $?
+}
+
+# func_usage
+# Echo short help message to standard output and exit.
+func_usage ()
+{
+ $SED -n '/^# Usage:/,/# -h/ {
+ s/^# //
+ s/^# *$//
+ s/\$progname/'$progname'/
+ p
+ }' < "$progpath"
+ $ECHO
+ $ECHO "run \`$progname --help | more' for full usage"
+ exit $?
+}
+
+# func_help
+# Echo long help message to standard output and exit.
+func_help ()
+{
+ $SED -n '/^# Usage:/,/# Report bugs to/ {
+ s/^# //
+ s/^# *$//
+ s*\$progname*'$progname'*
+ s*\$host*'"$host"'*
+ s*\$SHELL*'"$SHELL"'*
+ s*\$LTCC*'"$LTCC"'*
+ s*\$LTCFLAGS*'"$LTCFLAGS"'*
+ s*\$LD*'"$LD"'*
+ s/\$with_gnu_ld/'"$with_gnu_ld"'/
+ s/\$automake_version/'"`(automake --version) 2>/dev/null |$SED 1q`"'/
+ s/\$autoconf_version/'"`(autoconf --version) 2>/dev/null |$SED 1q`"'/
+ p
+ }' < "$progpath"
+ exit $?
+}
+
+# func_missing_arg argname
+# Echo program name prefixed message to standard error and set global
+# exit_cmd.
+func_missing_arg ()
+{
+ func_error "missing argument for $1"
+ exit_cmd=exit
+}
+
+exit_cmd=:
+
+
+
+
+
+# Check that we have a working $ECHO.
+if test "X$1" = X--no-reexec; then
+ # Discard the --no-reexec flag, and continue.
+ shift
+elif test "X$1" = X--fallback-echo; then
+ # Avoid inline document here, it may be left over
+ :
+elif test "X`{ $ECHO '\t'; } 2>/dev/null`" = 'X\t'; then
+ # Yippee, $ECHO works!
+ :
+else
+ # Restart under the correct shell, and then maybe $ECHO will work.
+ exec $SHELL "$progpath" --no-reexec ${1+"$@"}
+fi
+
+if test "X$1" = X--fallback-echo; then
+ # used as fallback echo
+ shift
+ cat <<EOF
+$*
+EOF
+ exit $EXIT_SUCCESS
+fi
+
+magic="%%%MAGIC variable%%%"
+magic_exe="%%%MAGIC EXE variable%%%"
+
+# Global variables.
+# $mode is unset
+nonopt=
+execute_dlfiles=
+preserve_args=
+lo2o="s/\\.lo\$/.${objext}/"
+o2lo="s/\\.${objext}\$/.lo/"
+extracted_archives=
+extracted_serial=0
+
+opt_dry_run=false
+opt_duplicate_deps=false
+opt_silent=false
+opt_debug=:
+
+# If this variable is set in any of the actions, the command in it
+# will be execed at the end. This prevents here-documents from being
+# left over by shells.
+exec_cmd=
+
+# func_fatal_configuration arg...
+# Echo program name prefixed message to standard error, followed by
+# a configuration failure hint, and exit.
+func_fatal_configuration ()
+{
+ func_error ${1+"$@"}
+ func_error "See the $PACKAGE documentation for more information."
+ func_fatal_error "Fatal configuration error."
+}
+
+
+# func_config
+# Display the configuration for all the tags in this script.
+func_config ()
+{
+ re_begincf='^# ### BEGIN LIBTOOL'
+ re_endcf='^# ### END LIBTOOL'
+
+ # Default configuration.
+ $SED "1,/$re_begincf CONFIG/d;/$re_endcf CONFIG/,\$d" < "$progpath"
+
+ # Now print the configurations for the tags.
+ for tagname in $taglist; do
+ $SED -n "/$re_begincf TAG CONFIG: $tagname\$/,/$re_endcf TAG CONFIG: $tagname\$/p" < "$progpath"
+ done
+
+ exit $?
+}
+
+# func_features
+# Display the features supported by this script.
+func_features ()
+{
+ $ECHO "host: $host"
+ if test "$build_libtool_libs" = yes; then
+ $ECHO "enable shared libraries"
+ else
+ $ECHO "disable shared libraries"
+ fi
+ if test "$build_old_libs" = yes; then
+ $ECHO "enable static libraries"
+ else
+ $ECHO "disable static libraries"
+ fi
+
+ exit $?
+}
+
+# func_enable_tag tagname
+# Verify that TAGNAME is valid, and either flag an error and exit, or
+# enable the TAGNAME tag. We also add TAGNAME to the global $taglist
+# variable here.
+func_enable_tag ()
+{
+ # Global variable:
+ tagname="$1"
+
+ re_begincf="^# ### BEGIN LIBTOOL TAG CONFIG: $tagname\$"
+ re_endcf="^# ### END LIBTOOL TAG CONFIG: $tagname\$"
+ sed_extractcf="/$re_begincf/,/$re_endcf/p"
+
+ # Validate tagname.
+ case $tagname in
+ *[!-_A-Za-z0-9,/]*)
+ func_fatal_error "invalid tag name: $tagname"
+ ;;
+ esac
+
+ # Don't test for the "default" C tag, as we know it's
+ # there but not specially marked.
+ case $tagname in
+ CC) ;;
+ *)
+ if $GREP "$re_begincf" "$progpath" >/dev/null 2>&1; then
+ taglist="$taglist $tagname"
+
+ # Evaluate the configuration. Be careful to quote the path
+ # and the sed script, to avoid splitting on whitespace, but
+ # also don't use non-portable quotes within backquotes within
+ # quotes we have to do it in 2 steps:
+ extractedcf=`$SED -n -e "$sed_extractcf" < "$progpath"`
+ eval "$extractedcf"
+ else
+ func_error "ignoring unknown tag $tagname"
+ fi
+ ;;
+ esac
+}
+
+# Parse options once, thoroughly. This comes as soon as possible in
+# the script to make things like `libtool --version' happen quickly.
+{
+
+ # Shorthand for --mode=foo, only valid as the first argument
+ case $1 in
+ clean|clea|cle|cl)
+ shift; set dummy --mode clean ${1+"$@"}; shift
+ ;;
+ compile|compil|compi|comp|com|co|c)
+ shift; set dummy --mode compile ${1+"$@"}; shift
+ ;;
+ execute|execut|execu|exec|exe|ex|e)
+ shift; set dummy --mode execute ${1+"$@"}; shift
+ ;;
+ finish|finis|fini|fin|fi|f)
+ shift; set dummy --mode finish ${1+"$@"}; shift
+ ;;
+ install|instal|insta|inst|ins|in|i)
+ shift; set dummy --mode install ${1+"$@"}; shift
+ ;;
+ link|lin|li|l)
+ shift; set dummy --mode link ${1+"$@"}; shift
+ ;;
+ uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u)
+ shift; set dummy --mode uninstall ${1+"$@"}; shift
+ ;;
+ esac
+
+ # Parse non-mode specific arguments:
+ while test "$#" -gt 0; do
+ opt="$1"
+ shift
+
+ case $opt in
+ --config) func_config ;;
+
+ --debug) preserve_args="$preserve_args $opt"
+ func_echo "enabling shell trace mode"
+ opt_debug='set -x'
+ $opt_debug
+ ;;
+
+ -dlopen) test "$#" -eq 0 && func_missing_arg "$opt" && break
+ execute_dlfiles="$execute_dlfiles $1"
+ shift
+ ;;
+
+ --dry-run | -n) opt_dry_run=: ;;
+ --features) func_features ;;
+ --finish) mode="finish" ;;
+
+ --mode) test "$#" -eq 0 && func_missing_arg "$opt" && break
+ case $1 in
+ # Valid mode arguments:
+ clean) ;;
+ compile) ;;
+ execute) ;;
+ finish) ;;
+ install) ;;
+ link) ;;
+ relink) ;;
+ uninstall) ;;
+
+ # Catch anything else as an error
+ *) func_error "invalid argument for $opt"
+ exit_cmd=exit
+ break
+ ;;
+ esac
+
+ mode="$1"
+ shift
+ ;;
+
+ --preserve-dup-deps)
+ opt_duplicate_deps=: ;;
+
+ --quiet|--silent) preserve_args="$preserve_args $opt"
+ opt_silent=:
+ ;;
+
+ --verbose| -v) preserve_args="$preserve_args $opt"
+ opt_silent=false
+ ;;
+
+ --tag) test "$#" -eq 0 && func_missing_arg "$opt" && break
+ preserve_args="$preserve_args $opt $1"
+ func_enable_tag "$1" # tagname is set here
+ shift
+ ;;
+
+ # Separate optargs to long options:
+ -dlopen=*|--mode=*|--tag=*)
+ func_opt_split "$opt"
+ set dummy "$func_opt_split_opt" "$func_opt_split_arg" ${1+"$@"}
+ shift
+ ;;
+
+ -\?|-h) func_usage ;;
+ --help) opt_help=: ;;
+ --version) func_version ;;
+
+ -*) func_fatal_help "unrecognized option \`$opt'" ;;
+
+ *) nonopt="$opt"
+ break
+ ;;
+ esac
+ done
+
+
+ case $host in
+ *cygwin* | *mingw* | *pw32* | *cegcc*)
+ # don't eliminate duplications in $postdeps and $predeps
+ opt_duplicate_compiler_generated_deps=:
+ ;;
+ *)
+ opt_duplicate_compiler_generated_deps=$opt_duplicate_deps
+ ;;
+ esac
+
+ # Having warned about all mis-specified options, bail out if
+ # anything was wrong.
+ $exit_cmd $EXIT_FAILURE
+}
+
+# func_check_version_match
+# Ensure that we are using m4 macros, and libtool script from the same
+# release of libtool.
+func_check_version_match ()
+{
+ if test "$package_revision" != "$macro_revision"; then
+ if test "$VERSION" != "$macro_version"; then
+ if test -z "$macro_version"; then
+ cat >&2 <<_LT_EOF
+$progname: Version mismatch error. This is $PACKAGE $VERSION, but the
+$progname: definition of this LT_INIT comes from an older release.
+$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
+$progname: and run autoconf again.
+_LT_EOF
+ else
+ cat >&2 <<_LT_EOF
+$progname: Version mismatch error. This is $PACKAGE $VERSION, but the
+$progname: definition of this LT_INIT comes from $PACKAGE $macro_version.
+$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
+$progname: and run autoconf again.
+_LT_EOF
+ fi
+ else
+ cat >&2 <<_LT_EOF
+$progname: Version mismatch error. This is $PACKAGE $VERSION, revision $package_revision,
+$progname: but the definition of this LT_INIT comes from revision $macro_revision.
+$progname: You should recreate aclocal.m4 with macros from revision $package_revision
+$progname: of $PACKAGE $VERSION and run autoconf again.
+_LT_EOF
+ fi
+
+ exit $EXIT_MISMATCH
+ fi
+}
+
+
+## ----------- ##
+## Main. ##
+## ----------- ##
+
+$opt_help || {
+ # Sanity checks first:
+ func_check_version_match
+
+ if test "$build_libtool_libs" != yes && test "$build_old_libs" != yes; then
+ func_fatal_configuration "not configured to build any kind of library"
+ fi
+
+ test -z "$mode" && func_fatal_error "error: you must specify a MODE."
+
+
+ # Darwin sucks
+ eval std_shrext=\"$shrext_cmds\"
+
+
+ # Only execute mode is allowed to have -dlopen flags.
+ if test -n "$execute_dlfiles" && test "$mode" != execute; then
+ func_error "unrecognized option \`-dlopen'"
+ $ECHO "$help" 1>&2
+ exit $EXIT_FAILURE
+ fi
+
+ # Change the help message to a mode-specific one.
+ generic_help="$help"
+ help="Try \`$progname --help --mode=$mode' for more information."
+}
+
+
+# func_lalib_p file
+# True iff FILE is a libtool `.la' library or `.lo' object file.
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_lalib_p ()
+{
+ test -f "$1" &&
+ $SED -e 4q "$1" 2>/dev/null \
+ | $GREP "^# Generated by .*$PACKAGE" > /dev/null 2>&1
+}
+
+# func_lalib_unsafe_p file
+# True iff FILE is a libtool `.la' library or `.lo' object file.
+# This function implements the same check as func_lalib_p without
+# resorting to external programs. To this end, it redirects stdin and
+# closes it afterwards, without saving the original file descriptor.
+# As a safety measure, use it only where a negative result would be
+# fatal anyway. Works if `file' does not exist.
+func_lalib_unsafe_p ()
+{
+ lalib_p=no
+ if test -f "$1" && test -r "$1" && exec 5<&0 <"$1"; then
+ for lalib_p_l in 1 2 3 4
+ do
+ read lalib_p_line
+ case "$lalib_p_line" in
+ \#\ Generated\ by\ *$PACKAGE* ) lalib_p=yes; break;;
+ esac
+ done
+ exec 0<&5 5<&-
+ fi
+ test "$lalib_p" = yes
+}
+
+# func_ltwrapper_script_p file
+# True iff FILE is a libtool wrapper script
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_script_p ()
+{
+ func_lalib_p "$1"
+}
+
+# func_ltwrapper_executable_p file
+# True iff FILE is a libtool wrapper executable
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_executable_p ()
+{
+ func_ltwrapper_exec_suffix=
+ case $1 in
+ *.exe) ;;
+ *) func_ltwrapper_exec_suffix=.exe ;;
+ esac
+ $GREP "$magic_exe" "$1$func_ltwrapper_exec_suffix" >/dev/null 2>&1
+}
+
+# func_ltwrapper_scriptname file
+# Assumes file is an ltwrapper_executable
+# uses $file to determine the appropriate filename for a
+# temporary ltwrapper_script.
+func_ltwrapper_scriptname ()
+{
+ func_ltwrapper_scriptname_result=""
+ if func_ltwrapper_executable_p "$1"; then
+ func_dirname_and_basename "$1" "" "."
+ func_stripname '' '.exe' "$func_basename_result"
+ func_ltwrapper_scriptname_result="$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper"
+ fi
+}
+
+# func_ltwrapper_p file
+# True iff FILE is a libtool wrapper script or wrapper executable
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_p ()
+{
+ func_ltwrapper_script_p "$1" || func_ltwrapper_executable_p "$1"
+}
+
+
+# func_execute_cmds commands fail_cmd
+# Execute tilde-delimited COMMANDS.
+# If FAIL_CMD is given, eval that upon failure.
+# FAIL_CMD may read-access the current command in variable CMD!
+func_execute_cmds ()
+{
+ $opt_debug
+ save_ifs=$IFS; IFS='~'
+ for cmd in $1; do
+ IFS=$save_ifs
+ eval cmd=\"$cmd\"
+ func_show_eval "$cmd" "${2-:}"
+ done
+ IFS=$save_ifs
+}
+
+
+# func_source file
+# Source FILE, adding directory component if necessary.
+# Note that it is not necessary on cygwin/mingw to append a dot to
+# FILE even if both FILE and FILE.exe exist: automatic-append-.exe
+# behavior happens only for exec(3), not for open(2)! Also, sourcing
+# `FILE.' does not work on cygwin managed mounts.
+func_source ()
+{
+ $opt_debug
+ case $1 in
+ */* | *\\*) . "$1" ;;
+ *) . "./$1" ;;
+ esac
+}
+
+
+# func_infer_tag arg
+# Infer tagged configuration to use if any are available and
+# if one wasn't chosen via the "--tag" command line option.
+# Only attempt this if the compiler in the base compile
+# command doesn't match the default compiler.
+# arg is usually of the form 'gcc ...'
+func_infer_tag ()
+{
+ $opt_debug
+ if test -n "$available_tags" && test -z "$tagname"; then
+ CC_quoted=
+ for arg in $CC; do
+ func_quote_for_eval "$arg"
+ CC_quoted="$CC_quoted $func_quote_for_eval_result"
+ done
+ case $@ in
+ # Blanks in the command may have been stripped by the calling shell,
+ # but not from the CC environment variable when configure was run.
+ " $CC "* | "$CC "* | " `$ECHO $CC` "* | "`$ECHO $CC` "* | " $CC_quoted"* | "$CC_quoted "* | " `$ECHO $CC_quoted` "* | "`$ECHO $CC_quoted` "*) ;;
+ # Blanks at the start of $base_compile will cause this to fail
+ # if we don't check for them as well.
+ *)
+ for z in $available_tags; do
+ if $GREP "^# ### BEGIN LIBTOOL TAG CONFIG: $z$" < "$progpath" > /dev/null; then
+ # Evaluate the configuration.
+ eval "`${SED} -n -e '/^# ### BEGIN LIBTOOL TAG CONFIG: '$z'$/,/^# ### END LIBTOOL TAG CONFIG: '$z'$/p' < $progpath`"
+ CC_quoted=
+ for arg in $CC; do
+ # Double-quote args containing other shell metacharacters.
+ func_quote_for_eval "$arg"
+ CC_quoted="$CC_quoted $func_quote_for_eval_result"
+ done
+ case "$@ " in
+ " $CC "* | "$CC "* | " `$ECHO $CC` "* | "`$ECHO $CC` "* | " $CC_quoted"* | "$CC_quoted "* | " `$ECHO $CC_quoted` "* | "`$ECHO $CC_quoted` "*)
+ # The compiler in the base compile command matches
+ # the one in the tagged configuration.
+ # Assume this is the tagged configuration we want.
+ tagname=$z
+ break
+ ;;
+ esac
+ fi
+ done
+ # If $tagname still isn't set, then no tagged configuration
+ # was found and let the user know that the "--tag" command
+ # line option must be used.
+ if test -z "$tagname"; then
+ func_echo "unable to infer tagged configuration"
+ func_fatal_error "specify a tag with \`--tag'"
+# else
+# func_verbose "using $tagname tagged configuration"
+ fi
+ ;;
+ esac
+ fi
+}
+
+
+
+# func_write_libtool_object output_name pic_name nonpic_name
+# Create a libtool object file (analogous to a ".la" file),
+# but don't create it if we're doing a dry run.
+func_write_libtool_object ()
+{
+ write_libobj=${1}
+ if test "$build_libtool_libs" = yes; then
+ write_lobj=\'${2}\'
+ else
+ write_lobj=none
+ fi
+
+ if test "$build_old_libs" = yes; then
+ write_oldobj=\'${3}\'
+ else
+ write_oldobj=none
+ fi
+
+ $opt_dry_run || {
+ cat >${write_libobj}T <<EOF
+# $write_libobj - a libtool object file
+# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# Name of the PIC object.
+pic_object=$write_lobj
+
+# Name of the non-PIC object
+non_pic_object=$write_oldobj
+
+EOF
+ $MV "${write_libobj}T" "${write_libobj}"
+ }
+}
+
+# func_mode_compile arg...
+func_mode_compile ()
+{
+ $opt_debug
+ # Get the compilation command and the source file.
+ base_compile=
+ srcfile="$nonopt" # always keep a non-empty value in "srcfile"
+ suppress_opt=yes
+ suppress_output=
+ arg_mode=normal
+ libobj=
+ later=
+ pie_flag=
+
+ for arg
+ do
+ case $arg_mode in
+ arg )
+ # do not "continue". Instead, add this to base_compile
+ lastarg="$arg"
+ arg_mode=normal
+ ;;
+
+ target )
+ libobj="$arg"
+ arg_mode=normal
+ continue
+ ;;
+
+ normal )
+ # Accept any command-line options.
+ case $arg in
+ -o)
+ test -n "$libobj" && \
+ func_fatal_error "you cannot specify \`-o' more than once"
+ arg_mode=target
+ continue
+ ;;
+
+ -pie | -fpie | -fPIE)
+ pie_flag="$pie_flag $arg"
+ continue
+ ;;
+
+ -shared | -static | -prefer-pic | -prefer-non-pic)
+ later="$later $arg"
+ continue
+ ;;
+
+ -no-suppress)
+ suppress_opt=no
+ continue
+ ;;
+
+ -Xcompiler)
+ arg_mode=arg # the next one goes into the "base_compile" arg list
+ continue # The current "srcfile" will either be retained or
+ ;; # replaced later. I would guess that would be a bug.
+
+ -Wc,*)
+ func_stripname '-Wc,' '' "$arg"
+ args=$func_stripname_result
+ lastarg=
+ save_ifs="$IFS"; IFS=','
+ for arg in $args; do
+ IFS="$save_ifs"
+ func_quote_for_eval "$arg"
+ lastarg="$lastarg $func_quote_for_eval_result"
+ done
+ IFS="$save_ifs"
+ func_stripname ' ' '' "$lastarg"
+ lastarg=$func_stripname_result
+
+ # Add the arguments to base_compile.
+ base_compile="$base_compile $lastarg"
+ continue
+ ;;
+
+ *)
+ # Accept the current argument as the source file.
+ # The previous "srcfile" becomes the current argument.
+ #
+ lastarg="$srcfile"
+ srcfile="$arg"
+ ;;
+ esac # case $arg
+ ;;
+ esac # case $arg_mode
+
+ # Aesthetically quote the previous argument.
+ func_quote_for_eval "$lastarg"
+ base_compile="$base_compile $func_quote_for_eval_result"
+ done # for arg
+
+ case $arg_mode in
+ arg)
+ func_fatal_error "you must specify an argument for -Xcompile"
+ ;;
+ target)
+ func_fatal_error "you must specify a target with \`-o'"
+ ;;
+ *)
+ # Get the name of the library object.
+ test -z "$libobj" && {
+ func_basename "$srcfile"
+ libobj="$func_basename_result"
+ }
+ ;;
+ esac
+
+ # Recognize several different file suffixes.
+ # If the user specifies -o file.o, it is replaced with file.lo
+ case $libobj in
+ *.[cCFSifmso] | \
+ *.ada | *.adb | *.ads | *.asm | \
+ *.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \
+ *.[fF][09]? | *.for | *.java | *.obj | *.sx)
+ func_xform "$libobj"
+ libobj=$func_xform_result
+ ;;
+ esac
+
+ case $libobj in
+ *.lo) func_lo2o "$libobj"; obj=$func_lo2o_result ;;
+ *)
+ func_fatal_error "cannot determine name of library object from \`$libobj'"
+ ;;
+ esac
+
+ func_infer_tag $base_compile
+
+ for arg in $later; do
+ case $arg in
+ -shared)
+ test "$build_libtool_libs" != yes && \
+ func_fatal_configuration "can not build a shared library"
+ build_old_libs=no
+ continue
+ ;;
+
+ -static)
+ build_libtool_libs=no
+ build_old_libs=yes
+ continue
+ ;;
+
+ -prefer-pic)
+ pic_mode=yes
+ continue
+ ;;
+
+ -prefer-non-pic)
+ pic_mode=no
+ continue
+ ;;
+ esac
+ done
+
+ func_quote_for_eval "$libobj"
+ test "X$libobj" != "X$func_quote_for_eval_result" \
+ && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"' &()|`$[]' \
+ && func_warning "libobj name \`$libobj' may not contain shell special characters."
+ func_dirname_and_basename "$obj" "/" ""
+ objname="$func_basename_result"
+ xdir="$func_dirname_result"
+ lobj=${xdir}$objdir/$objname
+
+ test -z "$base_compile" && \
+ func_fatal_help "you must specify a compilation command"
+
+ # Delete any leftover library objects.
+ if test "$build_old_libs" = yes; then
+ removelist="$obj $lobj $libobj ${libobj}T"
+ else
+ removelist="$lobj $libobj ${libobj}T"
+ fi
+
+ # On Cygwin there's no "real" PIC flag so we must build both object types
+ case $host_os in
+ cygwin* | mingw* | pw32* | os2* | cegcc*)
+ pic_mode=default
+ ;;
+ esac
+ if test "$pic_mode" = no && test "$deplibs_check_method" != pass_all; then
+ # non-PIC code in shared libraries is not supported
+ pic_mode=default
+ fi
+
+ # Calculate the filename of the output object if compiler does
+ # not support -o with -c
+ if test "$compiler_c_o" = no; then
+ output_obj=`$ECHO "X$srcfile" | $Xsed -e 's%^.*/%%' -e 's%\.[^.]*$%%'`.${objext}
+ lockfile="$output_obj.lock"
+ else
+ output_obj=
+ need_locks=no
+ lockfile=
+ fi
+
+ # Lock this critical section if it is needed
+ # We use this script file to make the link, it avoids creating a new file
+ if test "$need_locks" = yes; then
+ until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do
+ func_echo "Waiting for $lockfile to be removed"
+ sleep 2
+ done
+ elif test "$need_locks" = warn; then
+ if test -f "$lockfile"; then
+ $ECHO "\
+*** ERROR, $lockfile exists and contains:
+`cat $lockfile 2>/dev/null`
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together. If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+ $opt_dry_run || $RM $removelist
+ exit $EXIT_FAILURE
+ fi
+ removelist="$removelist $output_obj"
+ $ECHO "$srcfile" > "$lockfile"
+ fi
+
+ $opt_dry_run || $RM $removelist
+ removelist="$removelist $lockfile"
+ trap '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' 1 2 15
+
+ if test -n "$fix_srcfile_path"; then
+ eval srcfile=\"$fix_srcfile_path\"
+ fi
+ func_quote_for_eval "$srcfile"
+ qsrcfile=$func_quote_for_eval_result
+
+ # Only build a PIC object if we are building libtool libraries.
+ if test "$build_libtool_libs" = yes; then
+ # Without this assignment, base_compile gets emptied.
+ fbsd_hideous_sh_bug=$base_compile
+
+ if test "$pic_mode" != no; then
+ command="$base_compile $qsrcfile $pic_flag"
+ else
+ # Don't build PIC code
+ command="$base_compile $qsrcfile"
+ fi
+
+ func_mkdir_p "$xdir$objdir"
+
+ if test -z "$output_obj"; then
+ # Place PIC objects in $objdir
+ command="$command -o $lobj"
+ fi
+
+ func_show_eval_locale "$command" \
+ 'test -n "$output_obj" && $RM $removelist; exit $EXIT_FAILURE'
+
+ if test "$need_locks" = warn &&
+ test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then
+ $ECHO "\
+*** ERROR, $lockfile contains:
+`cat $lockfile 2>/dev/null`
+
+but it should contain:
+$srcfile
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together. If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+ $opt_dry_run || $RM $removelist
+ exit $EXIT_FAILURE
+ fi
+
+ # Just move the object if needed, then go on to compile the next one
+ if test -n "$output_obj" && test "X$output_obj" != "X$lobj"; then
+ func_show_eval '$MV "$output_obj" "$lobj"' \
+ 'error=$?; $opt_dry_run || $RM $removelist; exit $error'
+ fi
+
+ # Allow error messages only from the first compilation.
+ if test "$suppress_opt" = yes; then
+ suppress_output=' >/dev/null 2>&1'
+ fi
+ fi
+
+ # Only build a position-dependent object if we build old libraries.
+ if test "$build_old_libs" = yes; then
+ if test "$pic_mode" != yes; then
+ # Don't build PIC code
+ command="$base_compile $qsrcfile$pie_flag"
+ else
+ command="$base_compile $qsrcfile $pic_flag"
+ fi
+ if test "$compiler_c_o" = yes; then
+ command="$command -o $obj"
+ fi
+
+ # Suppress compiler output if we already did a PIC compilation.
+ command="$command$suppress_output"
+ func_show_eval_locale "$command" \
+ '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE'
+
+ if test "$need_locks" = warn &&
+ test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then
+ $ECHO "\
+*** ERROR, $lockfile contains:
+`cat $lockfile 2>/dev/null`
+
+but it should contain:
+$srcfile
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together. If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+ $opt_dry_run || $RM $removelist
+ exit $EXIT_FAILURE
+ fi
+
+ # Just move the object if needed
+ if test -n "$output_obj" && test "X$output_obj" != "X$obj"; then
+ func_show_eval '$MV "$output_obj" "$obj"' \
+ 'error=$?; $opt_dry_run || $RM $removelist; exit $error'
+ fi
+ fi
+
+ $opt_dry_run || {
+ func_write_libtool_object "$libobj" "$objdir/$objname" "$objname"
+
+ # Unlock the critical section if it was locked
+ if test "$need_locks" != no; then
+ removelist=$lockfile
+ $RM "$lockfile"
+ fi
+ }
+
+ exit $EXIT_SUCCESS
+}
+
+$opt_help || {
+test "$mode" = compile && func_mode_compile ${1+"$@"}
+}
+
+func_mode_help ()
+{
+ # We need to display help for each of the modes.
+ case $mode in
+ "")
+ # Generic help is extracted from the usage comments
+ # at the start of this file.
+ func_help
+ ;;
+
+ clean)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=clean RM [RM-OPTION]... FILE...
+
+Remove files from the build directory.
+
+RM is the name of the program to use to delete files associated with each FILE
+(typically \`/bin/rm'). RM-OPTIONS are options (such as \`-f') to be passed
+to RM.
+
+If FILE is a libtool library, object or program, all the files associated
+with it are deleted. Otherwise, only FILE itself is deleted using RM."
+ ;;
+
+ compile)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=compile COMPILE-COMMAND... SOURCEFILE
+
+Compile a source file into a libtool library object.
+
+This mode accepts the following additional options:
+
+ -o OUTPUT-FILE set the output file name to OUTPUT-FILE
+ -no-suppress do not suppress compiler output for multiple passes
+ -prefer-pic try to building PIC objects only
+ -prefer-non-pic try to building non-PIC objects only
+ -shared do not build a \`.o' file suitable for static linking
+ -static only build a \`.o' file suitable for static linking
+
+COMPILE-COMMAND is a command to be used in creating a \`standard' object file
+from the given SOURCEFILE.
+
+The output file name is determined by removing the directory component from
+SOURCEFILE, then substituting the C source code suffix \`.c' with the
+library object suffix, \`.lo'."
+ ;;
+
+ execute)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=execute COMMAND [ARGS]...
+
+Automatically set library path, then run a program.
+
+This mode accepts the following additional options:
+
+ -dlopen FILE add the directory containing FILE to the library path
+
+This mode sets the library path environment variable according to \`-dlopen'
+flags.
+
+If any of the ARGS are libtool executable wrappers, then they are translated
+into their corresponding uninstalled binary, and any of their required library
+directories are added to the library path.
+
+Then, COMMAND is executed, with ARGS as arguments."
+ ;;
+
+ finish)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=finish [LIBDIR]...
+
+Complete the installation of libtool libraries.
+
+Each LIBDIR is a directory that contains libtool libraries.
+
+The commands that this mode executes may require superuser privileges. Use
+the \`--dry-run' option if you just want to see what would be executed."
+ ;;
+
+ install)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=install INSTALL-COMMAND...
+
+Install executables or libraries.
+
+INSTALL-COMMAND is the installation command. The first component should be
+either the \`install' or \`cp' program.
+
+The following components of INSTALL-COMMAND are treated specially:
+
+ -inst-prefix PREFIX-DIR Use PREFIX-DIR as a staging area for installation
+
+The rest of the components are interpreted as arguments to that command (only
+BSD-compatible install options are recognized)."
+ ;;
+
+ link)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=link LINK-COMMAND...
+
+Link object files or libraries together to form another library, or to
+create an executable program.
+
+LINK-COMMAND is a command using the C compiler that you would use to create
+a program from several object files.
+
+The following components of LINK-COMMAND are treated specially:
+
+ -all-static do not do any dynamic linking at all
+ -avoid-version do not add a version suffix if possible
+ -dlopen FILE \`-dlpreopen' FILE if it cannot be dlopened at runtime
+ -dlpreopen FILE link in FILE and add its symbols to lt_preloaded_symbols
+ -export-dynamic allow symbols from OUTPUT-FILE to be resolved with dlsym(3)
+ -export-symbols SYMFILE
+ try to export only the symbols listed in SYMFILE
+ -export-symbols-regex REGEX
+ try to export only the symbols matching REGEX
+ -LLIBDIR search LIBDIR for required installed libraries
+ -lNAME OUTPUT-FILE requires the installed library libNAME
+ -module build a library that can dlopened
+ -no-fast-install disable the fast-install mode
+ -no-install link a not-installable executable
+ -no-undefined declare that a library does not refer to external symbols
+ -o OUTPUT-FILE create OUTPUT-FILE from the specified objects
+ -objectlist FILE Use a list of object files found in FILE to specify objects
+ -precious-files-regex REGEX
+ don't remove output files matching REGEX
+ -release RELEASE specify package release information
+ -rpath LIBDIR the created library will eventually be installed in LIBDIR
+ -R[ ]LIBDIR add LIBDIR to the runtime path of programs and libraries
+ -shared only do dynamic linking of libtool libraries
+ -shrext SUFFIX override the standard shared library file extension
+ -static do not do any dynamic linking of uninstalled libtool libraries
+ -static-libtool-libs
+ do not do any dynamic linking of libtool libraries
+ -version-info CURRENT[:REVISION[:AGE]]
+ specify library version info [each variable defaults to 0]
+ -weak LIBNAME declare that the target provides the LIBNAME interface
+
+All other options (arguments beginning with \`-') are ignored.
+
+Every other argument is treated as a filename. Files ending in \`.la' are
+treated as uninstalled libtool libraries, other files are standard or library
+object files.
+
+If the OUTPUT-FILE ends in \`.la', then a libtool library is created,
+only library objects (\`.lo' files) may be specified, and \`-rpath' is
+required, except when creating a convenience library.
+
+If OUTPUT-FILE ends in \`.a' or \`.lib', then a standard library is created
+using \`ar' and \`ranlib', or on Windows using \`lib'.
+
+If OUTPUT-FILE ends in \`.lo' or \`.${objext}', then a reloadable object file
+is created, otherwise an executable program is created."
+ ;;
+
+ uninstall)
+ $ECHO \
+"Usage: $progname [OPTION]... --mode=uninstall RM [RM-OPTION]... FILE...
+
+Remove libraries from an installation directory.
+
+RM is the name of the program to use to delete files associated with each FILE
+(typically \`/bin/rm'). RM-OPTIONS are options (such as \`-f') to be passed
+to RM.
+
+If FILE is a libtool library, all the files associated with it are deleted.
+Otherwise, only FILE itself is deleted using RM."
+ ;;
+
+ *)
+ func_fatal_help "invalid operation mode \`$mode'"
+ ;;
+ esac
+
+ $ECHO
+ $ECHO "Try \`$progname --help' for more information about other modes."
+
+ exit $?
+}
+
+ # Now that we've collected a possible --mode arg, show help if necessary
+ $opt_help && func_mode_help
+
+
+# func_mode_execute arg...
+func_mode_execute ()
+{
+ $opt_debug
+ # The first argument is the command name.
+ cmd="$nonopt"
+ test -z "$cmd" && \
+ func_fatal_help "you must specify a COMMAND"
+
+ # Handle -dlopen flags immediately.
+ for file in $execute_dlfiles; do
+ test -f "$file" \
+ || func_fatal_help "\`$file' is not a file"
+
+ dir=
+ case $file in
+ *.la)
+ # Check to see that this really is a libtool archive.
+ func_lalib_unsafe_p "$file" \
+ || func_fatal_help "\`$lib' is not a valid libtool archive"
+
+ # Read the libtool library.
+ dlname=
+ library_names=
+ func_source "$file"
+
+ # Skip this library if it cannot be dlopened.
+ if test -z "$dlname"; then
+ # Warn if it was a shared library.
+ test -n "$library_names" && \
+ func_warning "\`$file' was not linked with \`-export-dynamic'"
+ continue
+ fi
+
+ func_dirname "$file" "" "."
+ dir="$func_dirname_result"
+
+ if test -f "$dir/$objdir/$dlname"; then
+ dir="$dir/$objdir"
+ else
+ if test ! -f "$dir/$dlname"; then
+ func_fatal_error "cannot find \`$dlname' in \`$dir' or \`$dir/$objdir'"
+ fi
+ fi
+ ;;
+
+ *.lo)
+ # Just add the directory containing the .lo file.
+ func_dirname "$file" "" "."
+ dir="$func_dirname_result"
+ ;;
+
+ *)
+ func_warning "\`-dlopen' is ignored for non-libtool libraries and objects"
+ continue
+ ;;
+ esac
+
+ # Get the absolute pathname.
+ absdir=`cd "$dir" && pwd`
+ test -n "$absdir" && dir="$absdir"
+
+ # Now add the directory to shlibpath_var.
+ if eval "test -z \"\$$shlibpath_var\""; then
+ eval "$shlibpath_var=\"\$dir\""
+ else
+ eval "$shlibpath_var=\"\$dir:\$$shlibpath_var\""
+ fi
+ done
+
+ # This variable tells wrapper scripts just to set shlibpath_var
+ # rather than running their programs.
+ libtool_execute_magic="$magic"
+
+ # Check if any of the arguments is a wrapper script.
+ args=
+ for file
+ do
+ case $file in
+ -*) ;;
+ *)
+ # Do a test to see if this is really a libtool program.
+ if func_ltwrapper_script_p "$file"; then
+ func_source "$file"
+ # Transform arg to wrapped name.
+ file="$progdir/$program"
+ elif func_ltwrapper_executable_p "$file"; then
+ func_ltwrapper_scriptname "$file"
+ func_source "$func_ltwrapper_scriptname_result"
+ # Transform arg to wrapped name.
+ file="$progdir/$program"
+ fi
+ ;;
+ esac
+ # Quote arguments (to preserve shell metacharacters).
+ func_quote_for_eval "$file"
+ args="$args $func_quote_for_eval_result"
+ done
+
+ if test "X$opt_dry_run" = Xfalse; then
+ if test -n "$shlibpath_var"; then
+ # Export the shlibpath_var.
+ eval "export $shlibpath_var"
+ fi
+
+ # Restore saved environment variables
+ for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
+ do
+ eval "if test \"\${save_$lt_var+set}\" = set; then
+ $lt_var=\$save_$lt_var; export $lt_var
+ else
+ $lt_unset $lt_var
+ fi"
+ done
+
+ # Now prepare to actually exec the command.
+ exec_cmd="\$cmd$args"
+ else
+ # Display what would be done.
+ if test -n "$shlibpath_var"; then
+ eval "\$ECHO \"\$shlibpath_var=\$$shlibpath_var\""
+ $ECHO "export $shlibpath_var"
+ fi
+ $ECHO "$cmd$args"
+ exit $EXIT_SUCCESS
+ fi
+}
+
+test "$mode" = execute && func_mode_execute ${1+"$@"}
+
+
+# func_mode_finish arg...
+func_mode_finish ()
+{
+ $opt_debug
+ libdirs="$nonopt"
+ admincmds=
+
+ if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then
+ for dir
+ do
+ libdirs="$libdirs $dir"
+ done
+
+ for libdir in $libdirs; do
+ if test -n "$finish_cmds"; then
+ # Do each command in the finish commands.
+ func_execute_cmds "$finish_cmds" 'admincmds="$admincmds
+'"$cmd"'"'
+ fi
+ if test -n "$finish_eval"; then
+ # Do the single finish_eval.
+ eval cmds=\"$finish_eval\"
+ $opt_dry_run || eval "$cmds" || admincmds="$admincmds
+ $cmds"
+ fi
+ done
+ fi
+
+ # Exit here if they wanted silent mode.
+ $opt_silent && exit $EXIT_SUCCESS
+
+ $ECHO "X----------------------------------------------------------------------" | $Xsed
+ $ECHO "Libraries have been installed in:"
+ for libdir in $libdirs; do
+ $ECHO " $libdir"
+ done
+ $ECHO
+ $ECHO "If you ever happen to want to link against installed libraries"
+ $ECHO "in a given directory, LIBDIR, you must either use libtool, and"
+ $ECHO "specify the full pathname of the library, or use the \`-LLIBDIR'"
+ $ECHO "flag during linking and do at least one of the following:"
+ if test -n "$shlibpath_var"; then
+ $ECHO " - add LIBDIR to the \`$shlibpath_var' environment variable"
+ $ECHO " during execution"
+ fi
+ if test -n "$runpath_var"; then
+ $ECHO " - add LIBDIR to the \`$runpath_var' environment variable"
+ $ECHO " during linking"
+ fi
+ if test -n "$hardcode_libdir_flag_spec"; then
+ libdir=LIBDIR
+ eval flag=\"$hardcode_libdir_flag_spec\"
+
+ $ECHO " - use the \`$flag' linker flag"
+ fi
+ if test -n "$admincmds"; then
+ $ECHO " - have your system administrator run these commands:$admincmds"
+ fi
+ if test -f /etc/ld.so.conf; then
+ $ECHO " - have your system administrator add LIBDIR to \`/etc/ld.so.conf'"
+ fi
+ $ECHO
+
+ $ECHO "See any operating system documentation about shared libraries for"
+ case $host in
+ solaris2.[6789]|solaris2.1[0-9])
+ $ECHO "more information, such as the ld(1), crle(1) and ld.so(8) manual"
+ $ECHO "pages."
+ ;;
+ *)
+ $ECHO "more information, such as the ld(1) and ld.so(8) manual pages."
+ ;;
+ esac
+ $ECHO "X----------------------------------------------------------------------" | $Xsed
+ exit $EXIT_SUCCESS
+}
+
+test "$mode" = finish && func_mode_finish ${1+"$@"}
+
+
+# func_mode_install arg...
+func_mode_install ()
+{
+ $opt_debug
+ # There may be an optional sh(1) argument at the beginning of
+ # install_prog (especially on Windows NT).
+ if test "$nonopt" = "$SHELL" || test "$nonopt" = /bin/sh ||
+ # Allow the use of GNU shtool's install command.
+ $ECHO "X$nonopt" | $GREP shtool >/dev/null; then
+ # Aesthetically quote it.
+ func_quote_for_eval "$nonopt"
+ install_prog="$func_quote_for_eval_result "
+ arg=$1
+ shift
+ else
+ install_prog=
+ arg=$nonopt
+ fi
+
+ # The real first argument should be the name of the installation program.
+ # Aesthetically quote it.
+ func_quote_for_eval "$arg"
+ install_prog="$install_prog$func_quote_for_eval_result"
+
+ # We need to accept at least all the BSD install flags.
+ dest=
+ files=
+ opts=
+ prev=
+ install_type=
+ isdir=no
+ stripme=
+ for arg
+ do
+ if test -n "$dest"; then
+ files="$files $dest"
+ dest=$arg
+ continue
+ fi
+
+ case $arg in
+ -d) isdir=yes ;;
+ -f)
+ case " $install_prog " in
+ *[\\\ /]cp\ *) ;;
+ *) prev=$arg ;;
+ esac
+ ;;
+ -g | -m | -o)
+ prev=$arg
+ ;;
+ -s)
+ stripme=" -s"
+ continue
+ ;;
+ -*)
+ ;;
+ *)
+ # If the previous option needed an argument, then skip it.
+ if test -n "$prev"; then
+ prev=
+ else
+ dest=$arg
+ continue
+ fi
+ ;;
+ esac
+
+ # Aesthetically quote the argument.
+ func_quote_for_eval "$arg"
+ install_prog="$install_prog $func_quote_for_eval_result"
+ done
+
+ test -z "$install_prog" && \
+ func_fatal_help "you must specify an install program"
+
+ test -n "$prev" && \
+ func_fatal_help "the \`$prev' option requires an argument"
+
+ if test -z "$files"; then
+ if test -z "$dest"; then
+ func_fatal_help "no file or destination specified"
+ else
+ func_fatal_help "you must specify a destination"
+ fi
+ fi
+
+ # Strip any trailing slash from the destination.
+ func_stripname '' '/' "$dest"
+ dest=$func_stripname_result
+
+ # Check to see that the destination is a directory.
+ test -d "$dest" && isdir=yes
+ if test "$isdir" = yes; then
+ destdir="$dest"
+ destname=
+ else
+ func_dirname_and_basename "$dest" "" "."
+ destdir="$func_dirname_result"
+ destname="$func_basename_result"
+
+ # Not a directory, so check to see that there is only one file specified.
+ set dummy $files; shift
+ test "$#" -gt 1 && \
+ func_fatal_help "\`$dest' is not a directory"
+ fi
+ case $destdir in
+ [\\/]* | [A-Za-z]:[\\/]*) ;;
+ *)
+ for file in $files; do
+ case $file in
+ *.lo) ;;
+ *)
+ func_fatal_help "\`$destdir' must be an absolute directory name"
+ ;;
+ esac
+ done
+ ;;
+ esac
+
+ # This variable tells wrapper scripts just to set variables rather
+ # than running their programs.
+ libtool_install_magic="$magic"
+
+ staticlibs=
+ future_libdirs=
+ current_libdirs=
+ for file in $files; do
+
+ # Do each installation.
+ case $file in
+ *.$libext)
+ # Do the static libraries later.
+ staticlibs="$staticlibs $file"
+ ;;
+
+ *.la)
+ # Check to see that this really is a libtool archive.
+ func_lalib_unsafe_p "$file" \
+ || func_fatal_help "\`$file' is not a valid libtool archive"
+
+ library_names=
+ old_library=
+ relink_command=
+ func_source "$file"
+
+ # Add the libdir to current_libdirs if it is the destination.
+ if test "X$destdir" = "X$libdir"; then
+ case "$current_libdirs " in
+ *" $libdir "*) ;;
+ *) current_libdirs="$current_libdirs $libdir" ;;
+ esac
+ else
+ # Note the libdir as a future libdir.
+ case "$future_libdirs " in
+ *" $libdir "*) ;;
+ *) future_libdirs="$future_libdirs $libdir" ;;
+ esac
+ fi
+
+ func_dirname "$file" "/" ""
+ dir="$func_dirname_result"
+ dir="$dir$objdir"
+
+ if test -n "$relink_command"; then
+ # Determine the prefix the user has applied to our future dir.
+ inst_prefix_dir=`$ECHO "X$destdir" | $Xsed -e "s%$libdir\$%%"`
+
+ # Don't allow the user to place us outside of our expected
+ # location b/c this prevents finding dependent libraries that
+ # are installed to the same prefix.
+ # At present, this check doesn't affect windows .dll's that
+ # are installed into $libdir/../bin (currently, that works fine)
+ # but it's something to keep an eye on.
+ test "$inst_prefix_dir" = "$destdir" && \
+ func_fatal_error "error: cannot install \`$file' to a directory not ending in $libdir"
+
+ if test -n "$inst_prefix_dir"; then
+ # Stick the inst_prefix_dir data into the link command.
+ relink_command=`$ECHO "X$relink_command" | $Xsed -e "s%@inst_prefix_dir@%-inst-prefix-dir $inst_prefix_dir%"`
+ else
+ relink_command=`$ECHO "X$relink_command" | $Xsed -e "s%@inst_prefix_dir@%%"`
+ fi
+
+ func_warning "relinking \`$file'"
+ func_show_eval "$relink_command" \
+ 'func_fatal_error "error: relink \`$file'\'' with the above command before installing it"'
+ fi
+
+ # See the names of the shared library.
+ set dummy $library_names; shift
+ if test -n "$1"; then
+ realname="$1"
+ shift
+
+ srcname="$realname"
+ test -n "$relink_command" && srcname="$realname"T
+
+ # Install the shared library and build the symlinks.
+ func_show_eval "$install_prog $dir/$srcname $destdir/$realname" \
+ 'exit $?'
+ tstripme="$stripme"
+ case $host_os in
+ cygwin* | mingw* | pw32* | cegcc*)
+ case $realname in
+ *.dll.a)
+ tstripme=""
+ ;;
+ esac
+ ;;
+ esac
+ if test -n "$tstripme" && test -n "$striplib"; then
+ func_show_eval "$striplib $destdir/$realname" 'exit $?'
+ fi
+
+ if test "$#" -gt 0; then
+ # Delete the old symlinks, and create new ones.
+ # Try `ln -sf' first, because the `ln' binary might depend on
+ # the symlink we replace! Solaris /bin/ln does not understand -f,
+ # so we also need to try rm && ln -s.
+ for linkname
+ do
+ test "$linkname" != "$realname" \
+ && func_show_eval "(cd $destdir && { $LN_S -f $realname $linkname || { $RM $linkname && $LN_S $realname $linkname; }; })"
+ done
+ fi
+
+ # Do each command in the postinstall commands.
+ lib="$destdir/$realname"
+ func_execute_cmds "$postinstall_cmds" 'exit $?'
+ fi
+
+ # Install the pseudo-library for information purposes.
+ func_basename "$file"
+ name="$func_basename_result"
+ instname="$dir/$name"i
+ func_show_eval "$install_prog $instname $destdir/$name" 'exit $?'
+
+ # Maybe install the static library, too.
+ test -n "$old_library" && staticlibs="$staticlibs $dir/$old_library"
+ ;;
+
+ *.lo)
+ # Install (i.e. copy) a libtool object.
+
+ # Figure out destination file name, if it wasn't already specified.
+ if test -n "$destname"; then
+ destfile="$destdir/$destname"
+ else
+ func_basename "$file"
+ destfile="$func_basename_result"
+ destfile="$destdir/$destfile"
+ fi
+
+ # Deduce the name of the destination old-style object file.
+ case $destfile in
+ *.lo)
+ func_lo2o "$destfile"
+ staticdest=$func_lo2o_result
+ ;;
+ *.$objext)
+ staticdest="$destfile"
+ destfile=
+ ;;
+ *)
+ func_fatal_help "cannot copy a libtool object to \`$destfile'"
+ ;;
+ esac
+
+ # Install the libtool object if requested.
+ test -n "$destfile" && \
+ func_show_eval "$install_prog $file $destfile" 'exit $?'
+
+ # Install the old object if enabled.
+ if test "$build_old_libs" = yes; then
+ # Deduce the name of the old-style object file.
+ func_lo2o "$file"
+ staticobj=$func_lo2o_result
+ func_show_eval "$install_prog \$staticobj \$staticdest" 'exit $?'
+ fi
+ exit $EXIT_SUCCESS
+ ;;
+
+ *)
+ # Figure out destination file name, if it wasn't already specified.
+ if test -n "$destname"; then
+ destfile="$destdir/$destname"
+ else
+ func_basename "$file"
+ destfile="$func_basename_result"
+ destfile="$destdir/$destfile"
+ fi
+
+ # If the file is missing, and there is a .exe on the end, strip it
+ # because it is most likely a libtool script we actually want to
+ # install
+ stripped_ext=""
+ case $file in
+ *.exe)
+ if test ! -f "$file"; then
+ func_stripname '' '.exe' "$file"
+ file=$func_stripname_result
+ stripped_ext=".exe"
+ fi
+ ;;
+ esac
+
+ # Do a test to see if this is really a libtool program.
+ case $host in
+ *cygwin* | *mingw*)
+ if func_ltwrapper_executable_p "$file"; then
+ func_ltwrapper_scriptname "$file"
+ wrapper=$func_ltwrapper_scriptname_result
+ else
+ func_stripname '' '.exe' "$file"
+ wrapper=$func_stripname_result
+ fi
+ ;;
+ *)
+ wrapper=$file
+ ;;
+ esac
+ if func_ltwrapper_script_p "$wrapper"; then
+ notinst_deplibs=
+ relink_command=
+
+ func_source "$wrapper"
+
+ # Check the variables that should have been set.
+ test -z "$generated_by_libtool_version" && \
+ func_fatal_error "invalid libtool wrapper script \`$wrapper'"
+
+ finalize=yes
+ for lib in $notinst_deplibs; do
+ # Check to see that each library is installed.
+ libdir=
+ if test -f "$lib"; then
+ func_source "$lib"
+ fi
+ libfile="$libdir/"`$ECHO "X$lib" | $Xsed -e 's%^.*/%%g'` ### testsuite: skip nested quoting test
+ if test -n "$libdir" && test ! -f "$libfile"; then
+ func_warning "\`$lib' has not been installed in \`$libdir'"
+ finalize=no
+ fi
+ done
+
+ relink_command=
+ func_source "$wrapper"
+
+ outputname=
+ if test "$fast_install" = no && test -n "$relink_command"; then
+ $opt_dry_run || {
+ if test "$finalize" = yes; then
+ tmpdir=`func_mktempdir`
+ func_basename "$file$stripped_ext"
+ file="$func_basename_result"
+ outputname="$tmpdir/$file"
+ # Replace the output file specification.
+ relink_command=`$ECHO "X$relink_command" | $Xsed -e 's%@OUTPUT@%'"$outputname"'%g'`
+
+ $opt_silent || {
+ func_quote_for_expand "$relink_command"
+ eval "func_echo $func_quote_for_expand_result"
+ }
+ if eval "$relink_command"; then :
+ else
+ func_error "error: relink \`$file' with the above command before installing it"
+ $opt_dry_run || ${RM}r "$tmpdir"
+ continue
+ fi
+ file="$outputname"
+ else
+ func_warning "cannot relink \`$file'"
+ fi
+ }
+ else
+ # Install the binary that we compiled earlier.
+ file=`$ECHO "X$file$stripped_ext" | $Xsed -e "s%\([^/]*\)$%$objdir/\1%"`
+ fi
+ fi
+
+ # remove .exe since cygwin /usr/bin/install will append another
+ # one anyway
+ case $install_prog,$host in
+ */usr/bin/install*,*cygwin*)
+ case $file:$destfile in
+ *.exe:*.exe)
+ # this is ok
+ ;;
+ *.exe:*)
+ destfile=$destfile.exe
+ ;;
+ *:*.exe)
+ func_stripname '' '.exe' "$destfile"
+ destfile=$func_stripname_result
+ ;;
+ esac
+ ;;
+ esac
+ func_show_eval "$install_prog\$stripme \$file \$destfile" 'exit $?'
+ $opt_dry_run || if test -n "$outputname"; then
+ ${RM}r "$tmpdir"
+ fi
+ ;;
+ esac
+ done
+
+ for file in $staticlibs; do
+ func_basename "$file"
+ name="$func_basename_result"
+
+ # Set up the ranlib parameters.
+ oldlib="$destdir/$name"
+
+ func_show_eval "$install_prog \$file \$oldlib" 'exit $?'
+
+ if test -n "$stripme" && test -n "$old_striplib"; then
+ func_show_eval "$old_striplib $oldlib" 'exit $?'
+ fi
+
+ # Do each command in the postinstall commands.
+ func_execute_cmds "$old_postinstall_cmds" 'exit $?'
+ done
+
+ test -n "$future_libdirs" && \
+ func_warning "remember to run \`$progname --finish$future_libdirs'"
+
+ if test -n "$current_libdirs"; then
+ # Maybe just do a dry run.
+ $opt_dry_run && current_libdirs=" -n$current_libdirs"
+ exec_cmd='$SHELL $progpath $preserve_args --finish$current_libdirs'
+ else
+ exit $EXIT_SUCCESS
+ fi
+}
+
+test "$mode" = install && func_mode_install ${1+"$@"}
+
+
+# func_generate_dlsyms outputname originator pic_p
+# Extract symbols from dlprefiles and create ${outputname}S.o with
+# a dlpreopen symbol table.
+func_generate_dlsyms ()
+{
+ $opt_debug
+ my_outputname="$1"
+ my_originator="$2"
+ my_pic_p="${3-no}"
+ my_prefix=`$ECHO "$my_originator" | sed 's%[^a-zA-Z0-9]%_%g'`
+ my_dlsyms=
+
+ if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+ if test -n "$NM" && test -n "$global_symbol_pipe"; then
+ my_dlsyms="${my_outputname}S.c"
+ else
+ func_error "not configured to extract global symbols from dlpreopened files"
+ fi
+ fi
+
+ if test -n "$my_dlsyms"; then
+ case $my_dlsyms in
+ "") ;;
+ *.c)
+ # Discover the nlist of each of the dlfiles.
+ nlist="$output_objdir/${my_outputname}.nm"
+
+ func_show_eval "$RM $nlist ${nlist}S ${nlist}T"
+
+ # Parse the name list into a source file.
+ func_verbose "creating $output_objdir/$my_dlsyms"
+
+ $opt_dry_run || $ECHO > "$output_objdir/$my_dlsyms" "\
+/* $my_dlsyms - symbol resolution table for \`$my_outputname' dlsym emulation. */
+/* Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION */
+
+#ifdef __cplusplus
+extern \"C\" {
+#endif
+
+/* External symbol declarations for the compiler. */\
+"
+
+ if test "$dlself" = yes; then
+ func_verbose "generating symbol list for \`$output'"
+
+ $opt_dry_run || echo ': @PROGRAM@ ' > "$nlist"
+
+ # Add our own program objects to the symbol list.
+ progfiles=`$ECHO "X$objs$old_deplibs" | $SP2NL | $Xsed -e "$lo2o" | $NL2SP`
+ for progfile in $progfiles; do
+ func_verbose "extracting global C symbols from \`$progfile'"
+ $opt_dry_run || eval "$NM $progfile | $global_symbol_pipe >> '$nlist'"
+ done
+
+ if test -n "$exclude_expsyms"; then
+ $opt_dry_run || {
+ eval '$EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T'
+ eval '$MV "$nlist"T "$nlist"'
+ }
+ fi
+
+ if test -n "$export_symbols_regex"; then
+ $opt_dry_run || {
+ eval '$EGREP -e "$export_symbols_regex" "$nlist" > "$nlist"T'
+ eval '$MV "$nlist"T "$nlist"'
+ }
+ fi
+
+ # Prepare the list of exported symbols
+ if test -z "$export_symbols"; then
+ export_symbols="$output_objdir/$outputname.exp"
+ $opt_dry_run || {
+ $RM $export_symbols
+ eval "${SED} -n -e '/^: @PROGRAM@ $/d' -e 's/^.* \(.*\)$/\1/p' "'< "$nlist" > "$export_symbols"'
+ case $host in
+ *cygwin* | *mingw* | *cegcc* )
+ eval "echo EXPORTS "'> "$output_objdir/$outputname.def"'
+ eval 'cat "$export_symbols" >> "$output_objdir/$outputname.def"'
+ ;;
+ esac
+ }
+ else
+ $opt_dry_run || {
+ eval "${SED} -e 's/\([].[*^$]\)/\\\\\1/g' -e 's/^/ /' -e 's/$/$/'"' < "$export_symbols" > "$output_objdir/$outputname.exp"'
+ eval '$GREP -f "$output_objdir/$outputname.exp" < "$nlist" > "$nlist"T'
+ eval '$MV "$nlist"T "$nlist"'
+ case $host in
+ *cygwin | *mingw* | *cegcc* )
+ eval "echo EXPORTS "'> "$output_objdir/$outputname.def"'
+ eval 'cat "$nlist" >> "$output_objdir/$outputname.def"'
+ ;;
+ esac
+ }
+ fi
+ fi
+
+ for dlprefile in $dlprefiles; do
+ func_verbose "extracting global C symbols from \`$dlprefile'"
+ func_basename "$dlprefile"
+ name="$func_basename_result"
+ $opt_dry_run || {
+ eval '$ECHO ": $name " >> "$nlist"'
+ eval "$NM $dlprefile 2>/dev/null | $global_symbol_pipe >> '$nlist'"
+ }
+ done
+
+ $opt_dry_run || {
+ # Make sure we have at least an empty file.
+ test -f "$nlist" || : > "$nlist"
+
+ if test -n "$exclude_expsyms"; then
+ $EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T
+ $MV "$nlist"T "$nlist"
+ fi
+
+ # Try sorting and uniquifying the output.
+ if $GREP -v "^: " < "$nlist" |
+ if sort -k 3 </dev/null >/dev/null 2>&1; then
+ sort -k 3
+ else
+ sort +2
+ fi |
+ uniq > "$nlist"S; then
+ :
+ else
+ $GREP -v "^: " < "$nlist" > "$nlist"S
+ fi
+
+ if test -f "$nlist"S; then
+ eval "$global_symbol_to_cdecl"' < "$nlist"S >> "$output_objdir/$my_dlsyms"'
+ else
+ $ECHO '/* NONE */' >> "$output_objdir/$my_dlsyms"
+ fi
+
+ $ECHO >> "$output_objdir/$my_dlsyms" "\
+
+/* The mapping between symbol names and symbols. */
+typedef struct {
+ const char *name;
+ void *address;
+} lt_dlsymlist;
+"
+ case $host in
+ *cygwin* | *mingw* | *cegcc* )
+ $ECHO >> "$output_objdir/$my_dlsyms" "\
+/* DATA imports from DLLs on WIN32 con't be const, because
+ runtime relocations are performed -- see ld's documentation
+ on pseudo-relocs. */"
+ lt_dlsym_const= ;;
+ *osf5*)
+ echo >> "$output_objdir/$my_dlsyms" "\
+/* This system does not cope well with relocations in const data */"
+ lt_dlsym_const= ;;
+ *)
+ lt_dlsym_const=const ;;
+ esac
+
+ $ECHO >> "$output_objdir/$my_dlsyms" "\
+extern $lt_dlsym_const lt_dlsymlist
+lt_${my_prefix}_LTX_preloaded_symbols[];
+$lt_dlsym_const lt_dlsymlist
+lt_${my_prefix}_LTX_preloaded_symbols[] =
+{\
+ { \"$my_originator\", (void *) 0 },"
+
+ case $need_lib_prefix in
+ no)
+ eval "$global_symbol_to_c_name_address" < "$nlist" >> "$output_objdir/$my_dlsyms"
+ ;;
+ *)
+ eval "$global_symbol_to_c_name_address_lib_prefix" < "$nlist" >> "$output_objdir/$my_dlsyms"
+ ;;
+ esac
+ $ECHO >> "$output_objdir/$my_dlsyms" "\
+ {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+ return lt_${my_prefix}_LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif\
+"
+ } # !$opt_dry_run
+
+ pic_flag_for_symtable=
+ case "$compile_command " in
+ *" -static "*) ;;
+ *)
+ case $host in
+ # compiling the symbol table file with pic_flag works around
+ # a FreeBSD bug that causes programs to crash when -lm is
+ # linked before any other PIC object. But we must not use
+ # pic_flag when linking with -static. The problem exists in
+ # FreeBSD 2.2.6 and is fixed in FreeBSD 3.1.
+ *-*-freebsd2*|*-*-freebsd3.0*|*-*-freebsdelf3.0*)
+ pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;;
+ *-*-hpux*)
+ pic_flag_for_symtable=" $pic_flag" ;;
+ *)
+ if test "X$my_pic_p" != Xno; then
+ pic_flag_for_symtable=" $pic_flag"
+ fi
+ ;;
+ esac
+ ;;
+ esac
+ symtab_cflags=
+ for arg in $LTCFLAGS; do
+ case $arg in
+ -pie | -fpie | -fPIE) ;;
+ *) symtab_cflags="$symtab_cflags $arg" ;;
+ esac
+ done
+
+ # Now compile the dynamic symbol file.
+ func_show_eval '(cd $output_objdir && $LTCC$symtab_cflags -c$no_builtin_flag$pic_flag_for_symtable "$my_dlsyms")' 'exit $?'
+
+ # Clean up the generated files.
+ func_show_eval '$RM "$output_objdir/$my_dlsyms" "$nlist" "${nlist}S" "${nlist}T"'
+
+ # Transform the symbol file into the correct name.
+ symfileobj="$output_objdir/${my_outputname}S.$objext"
+ case $host in
+ *cygwin* | *mingw* | *cegcc* )
+ if test -f "$output_objdir/$my_outputname.def"; then
+ compile_command=`$ECHO "X$compile_command" | $Xsed -e "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
+ finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
+ else
+ compile_command=`$ECHO "X$compile_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"`
+ finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"`
+ fi
+ ;;
+ *)
+ compile_command=`$ECHO "X$compile_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"`
+ finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"`
+ ;;
+ esac
+ ;;
+ *)
+ func_fatal_error "unknown suffix for \`$my_dlsyms'"
+ ;;
+ esac
+ else
+ # We keep going just in case the user didn't refer to
+ # lt_preloaded_symbols. The linker will fail if global_symbol_pipe
+ # really was required.
+
+ # Nullify the symbol file.
+ compile_command=`$ECHO "X$compile_command" | $Xsed -e "s% @SYMFILE@%%"`
+ finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s% @SYMFILE@%%"`
+ fi
+}
+
+# func_win32_libid arg
+# return the library type of file 'arg'
+#
+# Need a lot of goo to handle *both* DLLs and import libs
+# Has to be a shell function in order to 'eat' the argument
+# that is supplied when $file_magic_command is called.
+func_win32_libid ()
+{
+ $opt_debug
+ win32_libid_type="unknown"
+ win32_fileres=`file -L $1 2>/dev/null`
+ case $win32_fileres in
+ *ar\ archive\ import\ library*) # definitely import
+ win32_libid_type="x86 archive import"
+ ;;
+ *ar\ archive*) # could be an import, or static
+ if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null |
+ $EGREP 'file format pe-i386(.*architecture: i386)?' >/dev/null ; then
+ win32_nmres=`eval $NM -f posix -A $1 |
+ $SED -n -e '
+ 1,100{
+ / I /{
+ s,.*,import,
+ p
+ q
+ }
+ }'`
+ case $win32_nmres in
+ import*) win32_libid_type="x86 archive import";;
+ *) win32_libid_type="x86 archive static";;
+ esac
+ fi
+ ;;
+ *DLL*)
+ win32_libid_type="x86 DLL"
+ ;;
+ *executable*) # but shell scripts are "executable" too...
+ case $win32_fileres in
+ *MS\ Windows\ PE\ Intel*)
+ win32_libid_type="x86 DLL"
+ ;;
+ esac
+ ;;
+ esac
+ $ECHO "$win32_libid_type"
+}
+
+
+
+# func_extract_an_archive dir oldlib
+func_extract_an_archive ()
+{
+ $opt_debug
+ f_ex_an_ar_dir="$1"; shift
+ f_ex_an_ar_oldlib="$1"
+ func_show_eval "(cd \$f_ex_an_ar_dir && $AR x \"\$f_ex_an_ar_oldlib\")" 'exit $?'
+ if ($AR t "$f_ex_an_ar_oldlib" | sort | sort -uc >/dev/null 2>&1); then
+ :
+ else
+ func_fatal_error "object name conflicts in archive: $f_ex_an_ar_dir/$f_ex_an_ar_oldlib"
+ fi
+}
+
+
+# func_extract_archives gentop oldlib ...
+func_extract_archives ()
+{
+ $opt_debug
+ my_gentop="$1"; shift
+ my_oldlibs=${1+"$@"}
+ my_oldobjs=""
+ my_xlib=""
+ my_xabs=""
+ my_xdir=""
+
+ for my_xlib in $my_oldlibs; do
+ # Extract the objects.
+ case $my_xlib in
+ [\\/]* | [A-Za-z]:[\\/]*) my_xabs="$my_xlib" ;;
+ *) my_xabs=`pwd`"/$my_xlib" ;;
+ esac
+ func_basename "$my_xlib"
+ my_xlib="$func_basename_result"
+ my_xlib_u=$my_xlib
+ while :; do
+ case " $extracted_archives " in
+ *" $my_xlib_u "*)
+ func_arith $extracted_serial + 1
+ extracted_serial=$func_arith_result
+ my_xlib_u=lt$extracted_serial-$my_xlib ;;
+ *) break ;;
+ esac
+ done
+ extracted_archives="$extracted_archives $my_xlib_u"
+ my_xdir="$my_gentop/$my_xlib_u"
+
+ func_mkdir_p "$my_xdir"
+
+ case $host in
+ *-darwin*)
+ func_verbose "Extracting $my_xabs"
+ # Do not bother doing anything if just a dry run
+ $opt_dry_run || {
+ darwin_orig_dir=`pwd`
+ cd $my_xdir || exit $?
+ darwin_archive=$my_xabs
+ darwin_curdir=`pwd`
+ darwin_base_archive=`basename "$darwin_archive"`
+ darwin_arches=`$LIPO -info "$darwin_archive" 2>/dev/null | $GREP Architectures 2>/dev/null || true`
+ if test -n "$darwin_arches"; then
+ darwin_arches=`$ECHO "$darwin_arches" | $SED -e 's/.*are://'`
+ darwin_arch=
+ func_verbose "$darwin_base_archive has multiple architectures $darwin_arches"
+ for darwin_arch in $darwin_arches ; do
+ func_mkdir_p "unfat-$$/${darwin_base_archive}-${darwin_arch}"
+ $LIPO -thin $darwin_arch -output "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}" "${darwin_archive}"
+ cd "unfat-$$/${darwin_base_archive}-${darwin_arch}"
+ func_extract_an_archive "`pwd`" "${darwin_base_archive}"
+ cd "$darwin_curdir"
+ $RM "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}"
+ done # $darwin_arches
+ ## Okay now we've a bunch of thin objects, gotta fatten them up :)
+ darwin_filelist=`find unfat-$$ -type f -name \*.o -print -o -name \*.lo -print | $SED -e "$basename" | sort -u`
+ darwin_file=
+ darwin_files=
+ for darwin_file in $darwin_filelist; do
+ darwin_files=`find unfat-$$ -name $darwin_file -print | $NL2SP`
+ $LIPO -create -output "$darwin_file" $darwin_files
+ done # $darwin_filelist
+ $RM -rf unfat-$$
+ cd "$darwin_orig_dir"
+ else
+ cd $darwin_orig_dir
+ func_extract_an_archive "$my_xdir" "$my_xabs"
+ fi # $darwin_arches
+ } # !$opt_dry_run
+ ;;
+ *)
+ func_extract_an_archive "$my_xdir" "$my_xabs"
+ ;;
+ esac
+ my_oldobjs="$my_oldobjs "`find $my_xdir -name \*.$objext -print -o -name \*.lo -print | $NL2SP`
+ done
+
+ func_extract_archives_result="$my_oldobjs"
+}
+
+
+
+# func_emit_wrapper_part1 [arg=no]
+#
+# Emit the first part of a libtool wrapper script on stdout.
+# For more information, see the description associated with
+# func_emit_wrapper(), below.
+func_emit_wrapper_part1 ()
+{
+ func_emit_wrapper_part1_arg1=no
+ if test -n "$1" ; then
+ func_emit_wrapper_part1_arg1=$1
+ fi
+
+ $ECHO "\
+#! $SHELL
+
+# $output - temporary wrapper script for $objdir/$outputname
+# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+#
+# The $output program cannot be directly executed until all the libtool
+# libraries that it depends on are installed.
+#
+# This wrapper script should never be moved out of the build directory.
+# If it is, it will not operate correctly.
+
+# Sed substitution that helps us do robust quoting. It backslashifies
+# metacharacters that are still active within double-quoted strings.
+Xsed='${SED} -e 1s/^X//'
+sed_quote_subst='$sed_quote_subst'
+
+# Be Bourne compatible
+if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then
+ emulate sh
+ NULLCMD=:
+ # Zsh 3.x and 4.x performs word splitting on \${1+\"\$@\"}, which
+ # is contrary to our usage. Disable this feature.
+ alias -g '\${1+\"\$@\"}'='\"\$@\"'
+ setopt NO_GLOB_SUBST
+else
+ case \`(set -o) 2>/dev/null\` in *posix*) set -o posix;; esac
+fi
+BIN_SH=xpg4; export BIN_SH # for Tru64
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+relink_command=\"$relink_command\"
+
+# This environment variable determines our operation mode.
+if test \"\$libtool_install_magic\" = \"$magic\"; then
+ # install mode needs the following variables:
+ generated_by_libtool_version='$macro_version'
+ notinst_deplibs='$notinst_deplibs'
+else
+ # When we are sourced in execute mode, \$file and \$ECHO are already set.
+ if test \"\$libtool_execute_magic\" != \"$magic\"; then
+ ECHO=\"$qecho\"
+ file=\"\$0\"
+ # Make sure echo works.
+ if test \"X\$1\" = X--no-reexec; then
+ # Discard the --no-reexec flag, and continue.
+ shift
+ elif test \"X\`{ \$ECHO '\t'; } 2>/dev/null\`\" = 'X\t'; then
+ # Yippee, \$ECHO works!
+ :
+ else
+ # Restart under the correct shell, and then maybe \$ECHO will work.
+ exec $SHELL \"\$0\" --no-reexec \${1+\"\$@\"}
+ fi
+ fi\
+"
+ $ECHO "\
+
+ # Find the directory that this script lives in.
+ thisdir=\`\$ECHO \"X\$file\" | \$Xsed -e 's%/[^/]*$%%'\`
+ test \"x\$thisdir\" = \"x\$file\" && thisdir=.
+
+ # Follow symbolic links until we get to the real thisdir.
+ file=\`ls -ld \"\$file\" | ${SED} -n 's/.*-> //p'\`
+ while test -n \"\$file\"; do
+ destdir=\`\$ECHO \"X\$file\" | \$Xsed -e 's%/[^/]*\$%%'\`
+
+ # If there was a directory component, then change thisdir.
+ if test \"x\$destdir\" != \"x\$file\"; then
+ case \"\$destdir\" in
+ [\\\\/]* | [A-Za-z]:[\\\\/]*) thisdir=\"\$destdir\" ;;
+ *) thisdir=\"\$thisdir/\$destdir\" ;;
+ esac
+ fi
+
+ file=\`\$ECHO \"X\$file\" | \$Xsed -e 's%^.*/%%'\`
+ file=\`ls -ld \"\$thisdir/\$file\" | ${SED} -n 's/.*-> //p'\`
+ done
+"
+}
+# end: func_emit_wrapper_part1
+
+# func_emit_wrapper_part2 [arg=no]
+#
+# Emit the second part of a libtool wrapper script on stdout.
+# For more information, see the description associated with
+# func_emit_wrapper(), below.
+func_emit_wrapper_part2 ()
+{
+ func_emit_wrapper_part2_arg1=no
+ if test -n "$1" ; then
+ func_emit_wrapper_part2_arg1=$1
+ fi
+
+ $ECHO "\
+
+ # Usually 'no', except on cygwin/mingw when embedded into
+ # the cwrapper.
+ WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=$func_emit_wrapper_part2_arg1
+ if test \"\$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR\" = \"yes\"; then
+ # special case for '.'
+ if test \"\$thisdir\" = \".\"; then
+ thisdir=\`pwd\`
+ fi
+ # remove .libs from thisdir
+ case \"\$thisdir\" in
+ *[\\\\/]$objdir ) thisdir=\`\$ECHO \"X\$thisdir\" | \$Xsed -e 's%[\\\\/][^\\\\/]*$%%'\` ;;
+ $objdir ) thisdir=. ;;
+ esac
+ fi
+
+ # Try to get the absolute directory name.
+ absdir=\`cd \"\$thisdir\" && pwd\`
+ test -n \"\$absdir\" && thisdir=\"\$absdir\"
+"
+
+ if test "$fast_install" = yes; then
+ $ECHO "\
+ program=lt-'$outputname'$exeext
+ progdir=\"\$thisdir/$objdir\"
+
+ if test ! -f \"\$progdir/\$program\" ||
+ { file=\`ls -1dt \"\$progdir/\$program\" \"\$progdir/../\$program\" 2>/dev/null | ${SED} 1q\`; \\
+ test \"X\$file\" != \"X\$progdir/\$program\"; }; then
+
+ file=\"\$\$-\$program\"
+
+ if test ! -d \"\$progdir\"; then
+ $MKDIR \"\$progdir\"
+ else
+ $RM \"\$progdir/\$file\"
+ fi"
+
+ $ECHO "\
+
+ # relink executable if necessary
+ if test -n \"\$relink_command\"; then
+ if relink_command_output=\`eval \$relink_command 2>&1\`; then :
+ else
+ $ECHO \"\$relink_command_output\" >&2
+ $RM \"\$progdir/\$file\"
+ exit 1
+ fi
+ fi
+
+ $MV \"\$progdir/\$file\" \"\$progdir/\$program\" 2>/dev/null ||
+ { $RM \"\$progdir/\$program\";
+ $MV \"\$progdir/\$file\" \"\$progdir/\$program\"; }
+ $RM \"\$progdir/\$file\"
+ fi"
+ else
+ $ECHO "\
+ program='$outputname'
+ progdir=\"\$thisdir/$objdir\"
+"
+ fi
+
+ $ECHO "\
+
+ if test -f \"\$progdir/\$program\"; then"
+
+ # Export our shlibpath_var if we have one.
+ if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then
+ $ECHO "\
+ # Add our own library path to $shlibpath_var
+ $shlibpath_var=\"$temp_rpath\$$shlibpath_var\"
+
+ # Some systems cannot cope with colon-terminated $shlibpath_var
+ # The second colon is a workaround for a bug in BeOS R4 sed
+ $shlibpath_var=\`\$ECHO \"X\$$shlibpath_var\" | \$Xsed -e 's/::*\$//'\`
+
+ export $shlibpath_var
+"
+ fi
+
+ # fixup the dll searchpath if we need to.
+ if test -n "$dllsearchpath"; then
+ $ECHO "\
+ # Add the dll search path components to the executable PATH
+ PATH=$dllsearchpath:\$PATH
+"
+ fi
+
+ $ECHO "\
+ if test \"\$libtool_execute_magic\" != \"$magic\"; then
+ # Run the actual program with our arguments.
+"
+ case $host in
+ # Backslashes separate directories on plain windows
+ *-*-mingw | *-*-os2* | *-cegcc*)
+ $ECHO "\
+ exec \"\$progdir\\\\\$program\" \${1+\"\$@\"}
+"
+ ;;
+
+ *)
+ $ECHO "\
+ exec \"\$progdir/\$program\" \${1+\"\$@\"}
+"
+ ;;
+ esac
+ $ECHO "\
+ \$ECHO \"\$0: cannot exec \$program \$*\" 1>&2
+ exit 1
+ fi
+ else
+ # The program doesn't exist.
+ \$ECHO \"\$0: error: \\\`\$progdir/\$program' does not exist\" 1>&2
+ \$ECHO \"This script is just a wrapper for \$program.\" 1>&2
+ $ECHO \"See the $PACKAGE documentation for more information.\" 1>&2
+ exit 1
+ fi
+fi\
+"
+}
+# end: func_emit_wrapper_part2
+
+
+# func_emit_wrapper [arg=no]
+#
+# Emit a libtool wrapper script on stdout.
+# Don't directly open a file because we may want to
+# incorporate the script contents within a cygwin/mingw
+# wrapper executable. Must ONLY be called from within
+# func_mode_link because it depends on a number of variables
+# set therein.
+#
+# ARG is the value that the WRAPPER_SCRIPT_BELONGS_IN_OBJDIR
+# variable will take. If 'yes', then the emitted script
+# will assume that the directory in which it is stored is
+# the $objdir directory. This is a cygwin/mingw-specific
+# behavior.
+func_emit_wrapper ()
+{
+ func_emit_wrapper_arg1=no
+ if test -n "$1" ; then
+ func_emit_wrapper_arg1=$1
+ fi
+
+ # split this up so that func_emit_cwrapperexe_src
+ # can call each part independently.
+ func_emit_wrapper_part1 "${func_emit_wrapper_arg1}"
+ func_emit_wrapper_part2 "${func_emit_wrapper_arg1}"
+}
+
+
+# func_to_host_path arg
+#
+# Convert paths to host format when used with build tools.
+# Intended for use with "native" mingw (where libtool itself
+# is running under the msys shell), or in the following cross-
+# build environments:
+# $build $host
+# mingw (msys) mingw [e.g. native]
+# cygwin mingw
+# *nix + wine mingw
+# where wine is equipped with the `winepath' executable.
+# In the native mingw case, the (msys) shell automatically
+# converts paths for any non-msys applications it launches,
+# but that facility isn't available from inside the cwrapper.
+# Similar accommodations are necessary for $host mingw and
+# $build cygwin. Calling this function does no harm for other
+# $host/$build combinations not listed above.
+#
+# ARG is the path (on $build) that should be converted to
+# the proper representation for $host. The result is stored
+# in $func_to_host_path_result.
+func_to_host_path ()
+{
+ func_to_host_path_result="$1"
+ if test -n "$1" ; then
+ case $host in
+ *mingw* )
+ lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'
+ case $build in
+ *mingw* ) # actually, msys
+ # awkward: cmd appends spaces to result
+ lt_sed_strip_trailing_spaces="s/[ ]*\$//"
+ func_to_host_path_tmp1=`( cmd //c echo "$1" |\
+ $SED -e "$lt_sed_strip_trailing_spaces" ) 2>/dev/null || echo ""`
+ func_to_host_path_result=`echo "$func_to_host_path_tmp1" |\
+ $SED -e "$lt_sed_naive_backslashify"`
+ ;;
+ *cygwin* )
+ func_to_host_path_tmp1=`cygpath -w "$1"`
+ func_to_host_path_result=`echo "$func_to_host_path_tmp1" |\
+ $SED -e "$lt_sed_naive_backslashify"`
+ ;;
+ * )
+ # Unfortunately, winepath does not exit with a non-zero
+ # error code, so we are forced to check the contents of
+ # stdout. On the other hand, if the command is not
+ # found, the shell will set an exit code of 127 and print
+ # *an error message* to stdout. So we must check for both
+ # error code of zero AND non-empty stdout, which explains
+ # the odd construction:
+ func_to_host_path_tmp1=`winepath -w "$1" 2>/dev/null`
+ if test "$?" -eq 0 && test -n "${func_to_host_path_tmp1}"; then
+ func_to_host_path_result=`echo "$func_to_host_path_tmp1" |\
+ $SED -e "$lt_sed_naive_backslashify"`
+ else
+ # Allow warning below.
+ func_to_host_path_result=""
+ fi
+ ;;
+ esac
+ if test -z "$func_to_host_path_result" ; then
+ func_error "Could not determine host path corresponding to"
+ func_error " '$1'"
+ func_error "Continuing, but uninstalled executables may not work."
+ # Fallback:
+ func_to_host_path_result="$1"
+ fi
+ ;;
+ esac
+ fi
+}
+# end: func_to_host_path
+
+# func_to_host_pathlist arg
+#
+# Convert pathlists to host format when used with build tools.
+# See func_to_host_path(), above. This function supports the
+# following $build/$host combinations (but does no harm for
+# combinations not listed here):
+# $build $host
+# mingw (msys) mingw [e.g. native]
+# cygwin mingw
+# *nix + wine mingw
+#
+# Path separators are also converted from $build format to
+# $host format. If ARG begins or ends with a path separator
+# character, it is preserved (but converted to $host format)
+# on output.
+#
+# ARG is a pathlist (on $build) that should be converted to
+# the proper representation on $host. The result is stored
+# in $func_to_host_pathlist_result.
+func_to_host_pathlist ()
+{
+ func_to_host_pathlist_result="$1"
+ if test -n "$1" ; then
+ case $host in
+ *mingw* )
+ lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'
+ # Remove leading and trailing path separator characters from
+ # ARG. msys behavior is inconsistent here, cygpath turns them
+ # into '.;' and ';.', and winepath ignores them completely.
+ func_to_host_pathlist_tmp2="$1"
+ # Once set for this call, this variable should not be
+ # reassigned. It is used in tha fallback case.
+ func_to_host_pathlist_tmp1=`echo "$func_to_host_pathlist_tmp2" |\
+ $SED -e 's|^:*||' -e 's|:*$||'`
+ case $build in
+ *mingw* ) # Actually, msys.
+ # Awkward: cmd appends spaces to result.
+ lt_sed_strip_trailing_spaces="s/[ ]*\$//"
+ func_to_host_pathlist_tmp2=`( cmd //c echo "$func_to_host_pathlist_tmp1" |\
+ $SED -e "$lt_sed_strip_trailing_spaces" ) 2>/dev/null || echo ""`
+ func_to_host_pathlist_result=`echo "$func_to_host_pathlist_tmp2" |\
+ $SED -e "$lt_sed_naive_backslashify"`
+ ;;
+ *cygwin* )
+ func_to_host_pathlist_tmp2=`cygpath -w -p "$func_to_host_pathlist_tmp1"`
+ func_to_host_pathlist_result=`echo "$func_to_host_pathlist_tmp2" |\
+ $SED -e "$lt_sed_naive_backslashify"`
+ ;;
+ * )
+ # unfortunately, winepath doesn't convert pathlists
+ func_to_host_pathlist_result=""
+ func_to_host_pathlist_oldIFS=$IFS
+ IFS=:
+ for func_to_host_pathlist_f in $func_to_host_pathlist_tmp1 ; do
+ IFS=$func_to_host_pathlist_oldIFS
+ if test -n "$func_to_host_pathlist_f" ; then
+ func_to_host_path "$func_to_host_pathlist_f"
+ if test -n "$func_to_host_path_result" ; then
+ if test -z "$func_to_host_pathlist_result" ; then
+ func_to_host_pathlist_result="$func_to_host_path_result"
+ else
+ func_to_host_pathlist_result="$func_to_host_pathlist_result;$func_to_host_path_result"
+ fi
+ fi
+ fi
+ IFS=:
+ done
+ IFS=$func_to_host_pathlist_oldIFS
+ ;;
+ esac
+ if test -z "$func_to_host_pathlist_result" ; then
+ func_error "Could not determine the host path(s) corresponding to"
+ func_error " '$1'"
+ func_error "Continuing, but uninstalled executables may not work."
+ # Fallback. This may break if $1 contains DOS-style drive
+ # specifications. The fix is not to complicate the expression
+ # below, but for the user to provide a working wine installation
+ # with winepath so that path translation in the cross-to-mingw
+ # case works properly.
+ lt_replace_pathsep_nix_to_dos="s|:|;|g"
+ func_to_host_pathlist_result=`echo "$func_to_host_pathlist_tmp1" |\
+ $SED -e "$lt_replace_pathsep_nix_to_dos"`
+ fi
+ # Now, add the leading and trailing path separators back
+ case "$1" in
+ :* ) func_to_host_pathlist_result=";$func_to_host_pathlist_result"
+ ;;
+ esac
+ case "$1" in
+ *: ) func_to_host_pathlist_result="$func_to_host_pathlist_result;"
+ ;;
+ esac
+ ;;
+ esac
+ fi
+}
+# end: func_to_host_pathlist
+
+# func_emit_cwrapperexe_src
+# emit the source code for a wrapper executable on stdout
+# Must ONLY be called from within func_mode_link because
+# it depends on a number of variable set therein.
+func_emit_cwrapperexe_src ()
+{
+ cat <<EOF
+
+/* $cwrappersource - temporary wrapper executable for $objdir/$outputname
+ Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+
+ The $output program cannot be directly executed until all the libtool
+ libraries that it depends on are installed.
+
+ This wrapper executable should never be moved out of the build directory.
+ If it is, it will not operate correctly.
+
+ Currently, it simply execs the wrapper *script* "$SHELL $output",
+ but could eventually absorb all of the scripts functionality and
+ exec $objdir/$outputname directly.
+*/
+EOF
+ cat <<"EOF"
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef _MSC_VER
+# include <direct.h>
+# include <process.h>
+# include <io.h>
+# define setmode _setmode
+#else
+# include <unistd.h>
+# include <stdint.h>
+# ifdef __CYGWIN__
+# include <io.h>
+# define HAVE_SETENV
+# ifdef __STRICT_ANSI__
+char *realpath (const char *, char *);
+int putenv (char *);
+int setenv (const char *, const char *, int);
+# endif
+# endif
+#endif
+#include <malloc.h>
+#include <stdarg.h>
+#include <assert.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+#if defined(PATH_MAX)
+# define LT_PATHMAX PATH_MAX
+#elif defined(MAXPATHLEN)
+# define LT_PATHMAX MAXPATHLEN
+#else
+# define LT_PATHMAX 1024
+#endif
+
+#ifndef S_IXOTH
+# define S_IXOTH 0
+#endif
+#ifndef S_IXGRP
+# define S_IXGRP 0
+#endif
+
+#ifdef _MSC_VER
+# define S_IXUSR _S_IEXEC
+# define stat _stat
+# ifndef _INTPTR_T_DEFINED
+# define intptr_t int
+# endif
+#endif
+
+#ifndef DIR_SEPARATOR
+# define DIR_SEPARATOR '/'
+# define PATH_SEPARATOR ':'
+#endif
+
+#if defined (_WIN32) || defined (__MSDOS__) || defined (__DJGPP__) || \
+ defined (__OS2__)
+# define HAVE_DOS_BASED_FILE_SYSTEM
+# define FOPEN_WB "wb"
+# ifndef DIR_SEPARATOR_2
+# define DIR_SEPARATOR_2 '\\'
+# endif
+# ifndef PATH_SEPARATOR_2
+# define PATH_SEPARATOR_2 ';'
+# endif
+#endif
+
+#ifndef DIR_SEPARATOR_2
+# define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
+#else /* DIR_SEPARATOR_2 */
+# define IS_DIR_SEPARATOR(ch) \
+ (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
+#endif /* DIR_SEPARATOR_2 */
+
+#ifndef PATH_SEPARATOR_2
+# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR)
+#else /* PATH_SEPARATOR_2 */
+# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR_2)
+#endif /* PATH_SEPARATOR_2 */
+
+#ifdef __CYGWIN__
+# define FOPEN_WB "wb"
+#endif
+
+#ifndef FOPEN_WB
+# define FOPEN_WB "w"
+#endif
+#ifndef _O_BINARY
+# define _O_BINARY 0
+#endif
+
+#define XMALLOC(type, num) ((type *) xmalloc ((num) * sizeof(type)))
+#define XFREE(stale) do { \
+ if (stale) { free ((void *) stale); stale = 0; } \
+} while (0)
+
+#undef LTWRAPPER_DEBUGPRINTF
+#if defined DEBUGWRAPPER
+# define LTWRAPPER_DEBUGPRINTF(args) ltwrapper_debugprintf args
+static void
+ltwrapper_debugprintf (const char *fmt, ...)
+{
+ va_list args;
+ va_start (args, fmt);
+ (void) vfprintf (stderr, fmt, args);
+ va_end (args);
+}
+#else
+# define LTWRAPPER_DEBUGPRINTF(args)
+#endif
+
+const char *program_name = NULL;
+
+void *xmalloc (size_t num);
+char *xstrdup (const char *string);
+const char *base_name (const char *name);
+char *find_executable (const char *wrapper);
+char *chase_symlinks (const char *pathspec);
+int make_executable (const char *path);
+int check_executable (const char *path);
+char *strendzap (char *str, const char *pat);
+void lt_fatal (const char *message, ...);
+void lt_setenv (const char *name, const char *value);
+char *lt_extend_str (const char *orig_value, const char *add, int to_end);
+void lt_opt_process_env_set (const char *arg);
+void lt_opt_process_env_prepend (const char *arg);
+void lt_opt_process_env_append (const char *arg);
+int lt_split_name_value (const char *arg, char** name, char** value);
+void lt_update_exe_path (const char *name, const char *value);
+void lt_update_lib_path (const char *name, const char *value);
+
+static const char *script_text_part1 =
+EOF
+
+ func_emit_wrapper_part1 yes |
+ $SED -e 's/\([\\"]\)/\\\1/g' \
+ -e 's/^/ "/' -e 's/$/\\n"/'
+ echo ";"
+ cat <<EOF
+
+static const char *script_text_part2 =
+EOF
+ func_emit_wrapper_part2 yes |
+ $SED -e 's/\([\\"]\)/\\\1/g' \
+ -e 's/^/ "/' -e 's/$/\\n"/'
+ echo ";"
+
+ cat <<EOF
+const char * MAGIC_EXE = "$magic_exe";
+const char * LIB_PATH_VARNAME = "$shlibpath_var";
+EOF
+
+ if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then
+ func_to_host_pathlist "$temp_rpath"
+ cat <<EOF
+const char * LIB_PATH_VALUE = "$func_to_host_pathlist_result";
+EOF
+ else
+ cat <<"EOF"
+const char * LIB_PATH_VALUE = "";
+EOF
+ fi
+
+ if test -n "$dllsearchpath"; then
+ func_to_host_pathlist "$dllsearchpath:"
+ cat <<EOF
+const char * EXE_PATH_VARNAME = "PATH";
+const char * EXE_PATH_VALUE = "$func_to_host_pathlist_result";
+EOF
+ else
+ cat <<"EOF"
+const char * EXE_PATH_VARNAME = "";
+const char * EXE_PATH_VALUE = "";
+EOF
+ fi
+
+ if test "$fast_install" = yes; then
+ cat <<EOF
+const char * TARGET_PROGRAM_NAME = "lt-$outputname"; /* hopefully, no .exe */
+EOF
+ else
+ cat <<EOF
+const char * TARGET_PROGRAM_NAME = "$outputname"; /* hopefully, no .exe */
+EOF
+ fi
+
+
+ cat <<"EOF"
+
+#define LTWRAPPER_OPTION_PREFIX "--lt-"
+#define LTWRAPPER_OPTION_PREFIX_LENGTH 5
+
+static const size_t opt_prefix_len = LTWRAPPER_OPTION_PREFIX_LENGTH;
+static const char *ltwrapper_option_prefix = LTWRAPPER_OPTION_PREFIX;
+
+static const char *dumpscript_opt = LTWRAPPER_OPTION_PREFIX "dump-script";
+
+static const size_t env_set_opt_len = LTWRAPPER_OPTION_PREFIX_LENGTH + 7;
+static const char *env_set_opt = LTWRAPPER_OPTION_PREFIX "env-set";
+ /* argument is putenv-style "foo=bar", value of foo is set to bar */
+
+static const size_t env_prepend_opt_len = LTWRAPPER_OPTION_PREFIX_LENGTH + 11;
+static const char *env_prepend_opt = LTWRAPPER_OPTION_PREFIX "env-prepend";
+ /* argument is putenv-style "foo=bar", new value of foo is bar${foo} */
+
+static const size_t env_append_opt_len = LTWRAPPER_OPTION_PREFIX_LENGTH + 10;
+static const char *env_append_opt = LTWRAPPER_OPTION_PREFIX "env-append";
+ /* argument is putenv-style "foo=bar", new value of foo is ${foo}bar */
+
+int
+main (int argc, char *argv[])
+{
+ char **newargz;
+ int newargc;
+ char *tmp_pathspec;
+ char *actual_cwrapper_path;
+ char *actual_cwrapper_name;
+ char *target_name;
+ char *lt_argv_zero;
+ intptr_t rval = 127;
+
+ int i;
+
+ program_name = (char *) xstrdup (base_name (argv[0]));
+ LTWRAPPER_DEBUGPRINTF (("(main) argv[0] : %s\n", argv[0]));
+ LTWRAPPER_DEBUGPRINTF (("(main) program_name : %s\n", program_name));
+
+ /* very simple arg parsing; don't want to rely on getopt */
+ for (i = 1; i < argc; i++)
+ {
+ if (strcmp (argv[i], dumpscript_opt) == 0)
+ {
+EOF
+ case "$host" in
+ *mingw* | *cygwin* )
+ # make stdout use "unix" line endings
+ echo " setmode(1,_O_BINARY);"
+ ;;
+ esac
+
+ cat <<"EOF"
+ printf ("%s", script_text_part1);
+ printf ("%s", script_text_part2);
+ return 0;
+ }
+ }
+
+ newargz = XMALLOC (char *, argc + 1);
+ tmp_pathspec = find_executable (argv[0]);
+ if (tmp_pathspec == NULL)
+ lt_fatal ("Couldn't find %s", argv[0]);
+ LTWRAPPER_DEBUGPRINTF (("(main) found exe (before symlink chase) at : %s\n",
+ tmp_pathspec));
+
+ actual_cwrapper_path = chase_symlinks (tmp_pathspec);
+ LTWRAPPER_DEBUGPRINTF (("(main) found exe (after symlink chase) at : %s\n",
+ actual_cwrapper_path));
+ XFREE (tmp_pathspec);
+
+ actual_cwrapper_name = xstrdup( base_name (actual_cwrapper_path));
+ strendzap (actual_cwrapper_path, actual_cwrapper_name);
+
+ /* wrapper name transforms */
+ strendzap (actual_cwrapper_name, ".exe");
+ tmp_pathspec = lt_extend_str (actual_cwrapper_name, ".exe", 1);
+ XFREE (actual_cwrapper_name);
+ actual_cwrapper_name = tmp_pathspec;
+ tmp_pathspec = 0;
+
+ /* target_name transforms -- use actual target program name; might have lt- prefix */
+ target_name = xstrdup (base_name (TARGET_PROGRAM_NAME));
+ strendzap (target_name, ".exe");
+ tmp_pathspec = lt_extend_str (target_name, ".exe", 1);
+ XFREE (target_name);
+ target_name = tmp_pathspec;
+ tmp_pathspec = 0;
+
+ LTWRAPPER_DEBUGPRINTF (("(main) libtool target name: %s\n",
+ target_name));
+EOF
+
+ cat <<EOF
+ newargz[0] =
+ XMALLOC (char, (strlen (actual_cwrapper_path) +
+ strlen ("$objdir") + 1 + strlen (actual_cwrapper_name) + 1));
+ strcpy (newargz[0], actual_cwrapper_path);
+ strcat (newargz[0], "$objdir");
+ strcat (newargz[0], "/");
+EOF
+
+ cat <<"EOF"
+ /* stop here, and copy so we don't have to do this twice */
+ tmp_pathspec = xstrdup (newargz[0]);
+
+ /* do NOT want the lt- prefix here, so use actual_cwrapper_name */
+ strcat (newargz[0], actual_cwrapper_name);
+
+ /* DO want the lt- prefix here if it exists, so use target_name */
+ lt_argv_zero = lt_extend_str (tmp_pathspec, target_name, 1);
+ XFREE (tmp_pathspec);
+ tmp_pathspec = NULL;
+EOF
+
+ case $host_os in
+ mingw*)
+ cat <<"EOF"
+ {
+ char* p;
+ while ((p = strchr (newargz[0], '\\')) != NULL)
+ {
+ *p = '/';
+ }
+ while ((p = strchr (lt_argv_zero, '\\')) != NULL)
+ {
+ *p = '/';
+ }
+ }
+EOF
+ ;;
+ esac
+
+ cat <<"EOF"
+ XFREE (target_name);
+ XFREE (actual_cwrapper_path);
+ XFREE (actual_cwrapper_name);
+
+ lt_setenv ("BIN_SH", "xpg4"); /* for Tru64 */
+ lt_setenv ("DUALCASE", "1"); /* for MSK sh */
+ lt_update_lib_path (LIB_PATH_VARNAME, LIB_PATH_VALUE);
+ lt_update_exe_path (EXE_PATH_VARNAME, EXE_PATH_VALUE);
+
+ newargc=0;
+ for (i = 1; i < argc; i++)
+ {
+ if (strncmp (argv[i], env_set_opt, env_set_opt_len) == 0)
+ {
+ if (argv[i][env_set_opt_len] == '=')
+ {
+ const char *p = argv[i] + env_set_opt_len + 1;
+ lt_opt_process_env_set (p);
+ }
+ else if (argv[i][env_set_opt_len] == '\0' && i + 1 < argc)
+ {
+ lt_opt_process_env_set (argv[++i]); /* don't copy */
+ }
+ else
+ lt_fatal ("%s missing required argument", env_set_opt);
+ continue;
+ }
+ if (strncmp (argv[i], env_prepend_opt, env_prepend_opt_len) == 0)
+ {
+ if (argv[i][env_prepend_opt_len] == '=')
+ {
+ const char *p = argv[i] + env_prepend_opt_len + 1;
+ lt_opt_process_env_prepend (p);
+ }
+ else if (argv[i][env_prepend_opt_len] == '\0' && i + 1 < argc)
+ {
+ lt_opt_process_env_prepend (argv[++i]); /* don't copy */
+ }
+ else
+ lt_fatal ("%s missing required argument", env_prepend_opt);
+ continue;
+ }
+ if (strncmp (argv[i], env_append_opt, env_append_opt_len) == 0)
+ {
+ if (argv[i][env_append_opt_len] == '=')
+ {
+ const char *p = argv[i] + env_append_opt_len + 1;
+ lt_opt_process_env_append (p);
+ }
+ else if (argv[i][env_append_opt_len] == '\0' && i + 1 < argc)
+ {
+ lt_opt_process_env_append (argv[++i]); /* don't copy */
+ }
+ else
+ lt_fatal ("%s missing required argument", env_append_opt);
+ continue;
+ }
+ if (strncmp (argv[i], ltwrapper_option_prefix, opt_prefix_len) == 0)
+ {
+ /* however, if there is an option in the LTWRAPPER_OPTION_PREFIX
+ namespace, but it is not one of the ones we know about and
+ have already dealt with, above (inluding dump-script), then
+ report an error. Otherwise, targets might begin to believe
+ they are allowed to use options in the LTWRAPPER_OPTION_PREFIX
+ namespace. The first time any user complains about this, we'll
+ need to make LTWRAPPER_OPTION_PREFIX a configure-time option
+ or a configure.ac-settable value.
+ */
+ lt_fatal ("Unrecognized option in %s namespace: '%s'",
+ ltwrapper_option_prefix, argv[i]);
+ }
+ /* otherwise ... */
+ newargz[++newargc] = xstrdup (argv[i]);
+ }
+ newargz[++newargc] = NULL;
+
+ LTWRAPPER_DEBUGPRINTF (("(main) lt_argv_zero : %s\n", (lt_argv_zero ? lt_argv_zero : "<NULL>")));
+ for (i = 0; i < newargc; i++)
+ {
+ LTWRAPPER_DEBUGPRINTF (("(main) newargz[%d] : %s\n", i, (newargz[i] ? newargz[i] : "<NULL>")));
+ }
+
+EOF
+
+ case $host_os in
+ mingw*)
+ cat <<"EOF"
+ /* execv doesn't actually work on mingw as expected on unix */
+ rval = _spawnv (_P_WAIT, lt_argv_zero, (const char * const *) newargz);
+ if (rval == -1)
+ {
+ /* failed to start process */
+ LTWRAPPER_DEBUGPRINTF (("(main) failed to launch target \"%s\": errno = %d\n", lt_argv_zero, errno));
+ return 127;
+ }
+ return rval;
+EOF
+ ;;
+ *)
+ cat <<"EOF"
+ execv (lt_argv_zero, newargz);
+ return rval; /* =127, but avoids unused variable warning */
+EOF
+ ;;
+ esac
+
+ cat <<"EOF"
+}
+
+void *
+xmalloc (size_t num)
+{
+ void *p = (void *) malloc (num);
+ if (!p)
+ lt_fatal ("Memory exhausted");
+
+ return p;
+}
+
+char *
+xstrdup (const char *string)
+{
+ return string ? strcpy ((char *) xmalloc (strlen (string) + 1),
+ string) : NULL;
+}
+
+const char *
+base_name (const char *name)
+{
+ const char *base;
+
+#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
+ /* Skip over the disk name in MSDOS pathnames. */
+ if (isalpha ((unsigned char) name[0]) && name[1] == ':')
+ name += 2;
+#endif
+
+ for (base = name; *name; name++)
+ if (IS_DIR_SEPARATOR (*name))
+ base = name + 1;
+ return base;
+}
+
+int
+check_executable (const char *path)
+{
+ struct stat st;
+
+ LTWRAPPER_DEBUGPRINTF (("(check_executable) : %s\n",
+ path ? (*path ? path : "EMPTY!") : "NULL!"));
+ if ((!path) || (!*path))
+ return 0;
+
+ if ((stat (path, &st) >= 0)
+ && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
+ return 1;
+ else
+ return 0;
+}
+
+int
+make_executable (const char *path)
+{
+ int rval = 0;
+ struct stat st;
+
+ LTWRAPPER_DEBUGPRINTF (("(make_executable) : %s\n",
+ path ? (*path ? path : "EMPTY!") : "NULL!"));
+ if ((!path) || (!*path))
+ return 0;
+
+ if (stat (path, &st) >= 0)
+ {
+ rval = chmod (path, st.st_mode | S_IXOTH | S_IXGRP | S_IXUSR);
+ }
+ return rval;
+}
+
+/* Searches for the full path of the wrapper. Returns
+ newly allocated full path name if found, NULL otherwise
+ Does not chase symlinks, even on platforms that support them.
+*/
+char *
+find_executable (const char *wrapper)
+{
+ int has_slash = 0;
+ const char *p;
+ const char *p_next;
+ /* static buffer for getcwd */
+ char tmp[LT_PATHMAX + 1];
+ int tmp_len;
+ char *concat_name;
+
+ LTWRAPPER_DEBUGPRINTF (("(find_executable) : %s\n",
+ wrapper ? (*wrapper ? wrapper : "EMPTY!") : "NULL!"));
+
+ if ((wrapper == NULL) || (*wrapper == '\0'))
+ return NULL;
+
+ /* Absolute path? */
+#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
+ if (isalpha ((unsigned char) wrapper[0]) && wrapper[1] == ':')
+ {
+ concat_name = xstrdup (wrapper);
+ if (check_executable (concat_name))
+ return concat_name;
+ XFREE (concat_name);
+ }
+ else
+ {
+#endif
+ if (IS_DIR_SEPARATOR (wrapper[0]))
+ {
+ concat_name = xstrdup (wrapper);
+ if (check_executable (concat_name))
+ return concat_name;
+ XFREE (concat_name);
+ }
+#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
+ }
+#endif
+
+ for (p = wrapper; *p; p++)
+ if (*p == '/')
+ {
+ has_slash = 1;
+ break;
+ }
+ if (!has_slash)
+ {
+ /* no slashes; search PATH */
+ const char *path = getenv ("PATH");
+ if (path != NULL)
+ {
+ for (p = path; *p; p = p_next)
+ {
+ const char *q;
+ size_t p_len;
+ for (q = p; *q; q++)
+ if (IS_PATH_SEPARATOR (*q))
+ break;
+ p_len = q - p;
+ p_next = (*q == '\0' ? q : q + 1);
+ if (p_len == 0)
+ {
+ /* empty path: current directory */
+ if (getcwd (tmp, LT_PATHMAX) == NULL)
+ lt_fatal ("getcwd failed");
+ tmp_len = strlen (tmp);
+ concat_name =
+ XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1);
+ memcpy (concat_name, tmp, tmp_len);
+ concat_name[tmp_len] = '/';
+ strcpy (concat_name + tmp_len + 1, wrapper);
+ }
+ else
+ {
+ concat_name =
+ XMALLOC (char, p_len + 1 + strlen (wrapper) + 1);
+ memcpy (concat_name, p, p_len);
+ concat_name[p_len] = '/';
+ strcpy (concat_name + p_len + 1, wrapper);
+ }
+ if (check_executable (concat_name))
+ return concat_name;
+ XFREE (concat_name);
+ }
+ }
+ /* not found in PATH; assume curdir */
+ }
+ /* Relative path | not found in path: prepend cwd */
+ if (getcwd (tmp, LT_PATHMAX) == NULL)
+ lt_fatal ("getcwd failed");
+ tmp_len = strlen (tmp);
+ concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1);
+ memcpy (concat_name, tmp, tmp_len);
+ concat_name[tmp_len] = '/';
+ strcpy (concat_name + tmp_len + 1, wrapper);
+
+ if (check_executable (concat_name))
+ return concat_name;
+ XFREE (concat_name);
+ return NULL;
+}
+
+char *
+chase_symlinks (const char *pathspec)
+{
+#ifndef S_ISLNK
+ return xstrdup (pathspec);
+#else
+ char buf[LT_PATHMAX];
+ struct stat s;
+ char *tmp_pathspec = xstrdup (pathspec);
+ char *p;
+ int has_symlinks = 0;
+ while (strlen (tmp_pathspec) && !has_symlinks)
+ {
+ LTWRAPPER_DEBUGPRINTF (("checking path component for symlinks: %s\n",
+ tmp_pathspec));
+ if (lstat (tmp_pathspec, &s) == 0)
+ {
+ if (S_ISLNK (s.st_mode) != 0)
+ {
+ has_symlinks = 1;
+ break;
+ }
+
+ /* search backwards for last DIR_SEPARATOR */
+ p = tmp_pathspec + strlen (tmp_pathspec) - 1;
+ while ((p > tmp_pathspec) && (!IS_DIR_SEPARATOR (*p)))
+ p--;
+ if ((p == tmp_pathspec) && (!IS_DIR_SEPARATOR (*p)))
+ {
+ /* no more DIR_SEPARATORS left */
+ break;
+ }
+ *p = '\0';
+ }
+ else
+ {
+ char *errstr = strerror (errno);
+ lt_fatal ("Error accessing file %s (%s)", tmp_pathspec, errstr);
+ }
+ }
+ XFREE (tmp_pathspec);
+
+ if (!has_symlinks)
+ {
+ return xstrdup (pathspec);
+ }
+
+ tmp_pathspec = realpath (pathspec, buf);
+ if (tmp_pathspec == 0)
+ {
+ lt_fatal ("Could not follow symlinks for %s", pathspec);
+ }
+ return xstrdup (tmp_pathspec);
+#endif
+}
+
+char *
+strendzap (char *str, const char *pat)
+{
+ size_t len, patlen;
+
+ assert (str != NULL);
+ assert (pat != NULL);
+
+ len = strlen (str);
+ patlen = strlen (pat);
+
+ if (patlen <= len)
+ {
+ str += len - patlen;
+ if (strcmp (str, pat) == 0)
+ *str = '\0';
+ }
+ return str;
+}
+
+static void
+lt_error_core (int exit_status, const char *mode,
+ const char *message, va_list ap)
+{
+ fprintf (stderr, "%s: %s: ", program_name, mode);
+ vfprintf (stderr, message, ap);
+ fprintf (stderr, ".\n");
+
+ if (exit_status >= 0)
+ exit (exit_status);
+}
+
+void
+lt_fatal (const char *message, ...)
+{
+ va_list ap;
+ va_start (ap, message);
+ lt_error_core (EXIT_FAILURE, "FATAL", message, ap);
+ va_end (ap);
+}
+
+void
+lt_setenv (const char *name, const char *value)
+{
+ LTWRAPPER_DEBUGPRINTF (("(lt_setenv) setting '%s' to '%s'\n",
+ (name ? name : "<NULL>"),
+ (value ? value : "<NULL>")));
+ {
+#ifdef HAVE_SETENV
+ /* always make a copy, for consistency with !HAVE_SETENV */
+ char *str = xstrdup (value);
+ setenv (name, str, 1);
+#else
+ int len = strlen (name) + 1 + strlen (value) + 1;
+ char *str = XMALLOC (char, len);
+ sprintf (str, "%s=%s", name, value);
+ if (putenv (str) != EXIT_SUCCESS)
+ {
+ XFREE (str);
+ }
+#endif
+ }
+}
+
+char *
+lt_extend_str (const char *orig_value, const char *add, int to_end)
+{
+ char *new_value;
+ if (orig_value && *orig_value)
+ {
+ int orig_value_len = strlen (orig_value);
+ int add_len = strlen (add);
+ new_value = XMALLOC (char, add_len + orig_value_len + 1);
+ if (to_end)
+ {
+ strcpy (new_value, orig_value);
+ strcpy (new_value + orig_value_len, add);
+ }
+ else
+ {
+ strcpy (new_value, add);
+ strcpy (new_value + add_len, orig_value);
+ }
+ }
+ else
+ {
+ new_value = xstrdup (add);
+ }
+ return new_value;
+}
+
+int
+lt_split_name_value (const char *arg, char** name, char** value)
+{
+ const char *p;
+ int len;
+ if (!arg || !*arg)
+ return 1;
+
+ p = strchr (arg, (int)'=');
+
+ if (!p)
+ return 1;
+
+ *value = xstrdup (++p);
+
+ len = strlen (arg) - strlen (*value);
+ *name = XMALLOC (char, len);
+ strncpy (*name, arg, len-1);
+ (*name)[len - 1] = '\0';
+
+ return 0;
+}
+
+void
+lt_opt_process_env_set (const char *arg)
+{
+ char *name = NULL;
+ char *value = NULL;
+
+ if (lt_split_name_value (arg, &name, &value) != 0)
+ {
+ XFREE (name);
+ XFREE (value);
+ lt_fatal ("bad argument for %s: '%s'", env_set_opt, arg);
+ }
+
+ lt_setenv (name, value);
+ XFREE (name);
+ XFREE (value);
+}
+
+void
+lt_opt_process_env_prepend (const char *arg)
+{
+ char *name = NULL;
+ char *value = NULL;
+ char *new_value = NULL;
+
+ if (lt_split_name_value (arg, &name, &value) != 0)
+ {
+ XFREE (name);
+ XFREE (value);
+ lt_fatal ("bad argument for %s: '%s'", env_prepend_opt, arg);
+ }
+
+ new_value = lt_extend_str (getenv (name), value, 0);
+ lt_setenv (name, new_value);
+ XFREE (new_value);
+ XFREE (name);
+ XFREE (value);
+}
+
+void
+lt_opt_process_env_append (const char *arg)
+{
+ char *name = NULL;
+ char *value = NULL;
+ char *new_value = NULL;
+
+ if (lt_split_name_value (arg, &name, &value) != 0)
+ {
+ XFREE (name);
+ XFREE (value);
+ lt_fatal ("bad argument for %s: '%s'", env_append_opt, arg);
+ }
+
+ new_value = lt_extend_str (getenv (name), value, 1);
+ lt_setenv (name, new_value);
+ XFREE (new_value);
+ XFREE (name);
+ XFREE (value);
+}
+
+void
+lt_update_exe_path (const char *name, const char *value)
+{
+ LTWRAPPER_DEBUGPRINTF (("(lt_update_exe_path) modifying '%s' by prepending '%s'\n",
+ (name ? name : "<NULL>"),
+ (value ? value : "<NULL>")));
+
+ if (name && *name && value && *value)
+ {
+ char *new_value = lt_extend_str (getenv (name), value, 0);
+ /* some systems can't cope with a ':'-terminated path #' */
+ int len = strlen (new_value);
+ while (((len = strlen (new_value)) > 0) && IS_PATH_SEPARATOR (new_value[len-1]))
+ {
+ new_value[len-1] = '\0';
+ }
+ lt_setenv (name, new_value);
+ XFREE (new_value);
+ }
+}
+
+void
+lt_update_lib_path (const char *name, const char *value)
+{
+ LTWRAPPER_DEBUGPRINTF (("(lt_update_lib_path) modifying '%s' by prepending '%s'\n",
+ (name ? name : "<NULL>"),
+ (value ? value : "<NULL>")));
+
+ if (name && *name && value && *value)
+ {
+ char *new_value = lt_extend_str (getenv (name), value, 0);
+ lt_setenv (name, new_value);
+ XFREE (new_value);
+ }
+}
+
+
+EOF
+}
+# end: func_emit_cwrapperexe_src
+
+# func_mode_link arg...
+func_mode_link ()
+{
+ $opt_debug
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+ # It is impossible to link a dll without this setting, and
+ # we shouldn't force the makefile maintainer to figure out
+ # which system we are compiling for in order to pass an extra
+ # flag for every libtool invocation.
+ # allow_undefined=no
+
+ # FIXME: Unfortunately, there are problems with the above when trying
+ # to make a dll which has undefined symbols, in which case not
+ # even a static library is built. For now, we need to specify
+ # -no-undefined on the libtool link line when we can be certain
+ # that all symbols are satisfied, otherwise we get a static library.
+ allow_undefined=yes
+ ;;
+ *)
+ allow_undefined=yes
+ ;;
+ esac
+ libtool_args=$nonopt
+ base_compile="$nonopt $@"
+ compile_command=$nonopt
+ finalize_command=$nonopt
+
+ compile_rpath=
+ finalize_rpath=
+ compile_shlibpath=
+ finalize_shlibpath=
+ convenience=
+ old_convenience=
+ deplibs=
+ old_deplibs=
+ compiler_flags=
+ linker_flags=
+ dllsearchpath=
+ lib_search_path=`pwd`
+ inst_prefix_dir=
+ new_inherited_linker_flags=
+
+ avoid_version=no
+ dlfiles=
+ dlprefiles=
+ dlself=no
+ export_dynamic=no
+ export_symbols=
+ export_symbols_regex=
+ generated=
+ libobjs=
+ ltlibs=
+ module=no
+ no_install=no
+ objs=
+ non_pic_objects=
+ precious_files_regex=
+ prefer_static_libs=no
+ preload=no
+ prev=
+ prevarg=
+ release=
+ rpath=
+ xrpath=
+ perm_rpath=
+ temp_rpath=
+ thread_safe=no
+ vinfo=
+ vinfo_number=no
+ weak_libs=
+ single_module="${wl}-single_module"
+ func_infer_tag $base_compile
+
+ # We need to know -static, to get the right output filenames.
+ for arg
+ do
+ case $arg in
+ -shared)
+ test "$build_libtool_libs" != yes && \
+ func_fatal_configuration "can not build a shared library"
+ build_old_libs=no
+ break
+ ;;
+ -all-static | -static | -static-libtool-libs)
+ case $arg in
+ -all-static)
+ if test "$build_libtool_libs" = yes && test -z "$link_static_flag"; then
+ func_warning "complete static linking is impossible in this configuration"
+ fi
+ if test -n "$link_static_flag"; then
+ dlopen_self=$dlopen_self_static
+ fi
+ prefer_static_libs=yes
+ ;;
+ -static)
+ if test -z "$pic_flag" && test -n "$link_static_flag"; then
+ dlopen_self=$dlopen_self_static
+ fi
+ prefer_static_libs=built
+ ;;
+ -static-libtool-libs)
+ if test -z "$pic_flag" && test -n "$link_static_flag"; then
+ dlopen_self=$dlopen_self_static
+ fi
+ prefer_static_libs=yes
+ ;;
+ esac
+ build_libtool_libs=no
+ build_old_libs=yes
+ break
+ ;;
+ esac
+ done
+
+ # See if our shared archives depend on static archives.
+ test -n "$old_archive_from_new_cmds" && build_old_libs=yes
+
+ # Go through the arguments, transforming them on the way.
+ while test "$#" -gt 0; do
+ arg="$1"
+ shift
+ func_quote_for_eval "$arg"
+ qarg=$func_quote_for_eval_unquoted_result
+ func_append libtool_args " $func_quote_for_eval_result"
+
+ # If the previous option needs an argument, assign it.
+ if test -n "$prev"; then
+ case $prev in
+ output)
+ func_append compile_command " @OUTPUT@"
+ func_append finalize_command " @OUTPUT@"
+ ;;
+ esac
+
+ case $prev in
+ dlfiles|dlprefiles)
+ if test "$preload" = no; then
+ # Add the symbol object into the linking commands.
+ func_append compile_command " @SYMFILE@"
+ func_append finalize_command " @SYMFILE@"
+ preload=yes
+ fi
+ case $arg in
+ *.la | *.lo) ;; # We handle these cases below.
+ force)
+ if test "$dlself" = no; then
+ dlself=needless
+ export_dynamic=yes
+ fi
+ prev=
+ continue
+ ;;
+ self)
+ if test "$prev" = dlprefiles; then
+ dlself=yes
+ elif test "$prev" = dlfiles && test "$dlopen_self" != yes; then
+ dlself=yes
+ else
+ dlself=needless
+ export_dynamic=yes
+ fi
+ prev=
+ continue
+ ;;
+ *)
+ if test "$prev" = dlfiles; then
+ dlfiles="$dlfiles $arg"
+ else
+ dlprefiles="$dlprefiles $arg"
+ fi
+ prev=
+ continue
+ ;;
+ esac
+ ;;
+ expsyms)
+ export_symbols="$arg"
+ test -f "$arg" \
+ || func_fatal_error "symbol file \`$arg' does not exist"
+ prev=
+ continue
+ ;;
+ expsyms_regex)
+ export_symbols_regex="$arg"
+ prev=
+ continue
+ ;;
+ framework)
+ case $host in
+ *-*-darwin*)
+ case "$deplibs " in
+ *" $qarg.ltframework "*) ;;
+ *) deplibs="$deplibs $qarg.ltframework" # this is fixed later
+ ;;
+ esac
+ ;;
+ esac
+ prev=
+ continue
+ ;;
+ inst_prefix)
+ inst_prefix_dir="$arg"
+ prev=
+ continue
+ ;;
+ objectlist)
+ if test -f "$arg"; then
+ save_arg=$arg
+ moreargs=
+ for fil in `cat "$save_arg"`
+ do
+# moreargs="$moreargs $fil"
+ arg=$fil
+ # A libtool-controlled object.
+
+ # Check to see that this really is a libtool object.
+ if func_lalib_unsafe_p "$arg"; then
+ pic_object=
+ non_pic_object=
+
+ # Read the .lo file
+ func_source "$arg"
+
+ if test -z "$pic_object" ||
+ test -z "$non_pic_object" ||
+ test "$pic_object" = none &&
+ test "$non_pic_object" = none; then
+ func_fatal_error "cannot find name of object for \`$arg'"
+ fi
+
+ # Extract subdirectory from the argument.
+ func_dirname "$arg" "/" ""
+ xdir="$func_dirname_result"
+
+ if test "$pic_object" != none; then
+ # Prepend the subdirectory the object is found in.
+ pic_object="$xdir$pic_object"
+
+ if test "$prev" = dlfiles; then
+ if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
+ dlfiles="$dlfiles $pic_object"
+ prev=
+ continue
+ else
+ # If libtool objects are unsupported, then we need to preload.
+ prev=dlprefiles
+ fi
+ fi
+
+ # CHECK ME: I think I busted this. -Ossama
+ if test "$prev" = dlprefiles; then
+ # Preload the old-style object.
+ dlprefiles="$dlprefiles $pic_object"
+ prev=
+ fi
+
+ # A PIC object.
+ func_append libobjs " $pic_object"
+ arg="$pic_object"
+ fi
+
+ # Non-PIC object.
+ if test "$non_pic_object" != none; then
+ # Prepend the subdirectory the object is found in.
+ non_pic_object="$xdir$non_pic_object"
+
+ # A standard non-PIC object
+ func_append non_pic_objects " $non_pic_object"
+ if test -z "$pic_object" || test "$pic_object" = none ; then
+ arg="$non_pic_object"
+ fi
+ else
+ # If the PIC object exists, use it instead.
+ # $xdir was prepended to $pic_object above.
+ non_pic_object="$pic_object"
+ func_append non_pic_objects " $non_pic_object"
+ fi
+ else
+ # Only an error if not doing a dry-run.
+ if $opt_dry_run; then
+ # Extract subdirectory from the argument.
+ func_dirname "$arg" "/" ""
+ xdir="$func_dirname_result"
+
+ func_lo2o "$arg"
+ pic_object=$xdir$objdir/$func_lo2o_result
+ non_pic_object=$xdir$func_lo2o_result
+ func_append libobjs " $pic_object"
+ func_append non_pic_objects " $non_pic_object"
+ else
+ func_fatal_error "\`$arg' is not a valid libtool object"
+ fi
+ fi
+ done
+ else
+ func_fatal_error "link input file \`$arg' does not exist"
+ fi
+ arg=$save_arg
+ prev=
+ continue
+ ;;
+ precious_regex)
+ precious_files_regex="$arg"
+ prev=
+ continue
+ ;;
+ release)
+ release="-$arg"
+ prev=
+ continue
+ ;;
+ rpath | xrpath)
+ # We need an absolute path.
+ case $arg in
+ [\\/]* | [A-Za-z]:[\\/]*) ;;
+ *)
+ func_fatal_error "only absolute run-paths are allowed"
+ ;;
+ esac
+ if test "$prev" = rpath; then
+ case "$rpath " in
+ *" $arg "*) ;;
+ *) rpath="$rpath $arg" ;;
+ esac
+ else
+ case "$xrpath " in
+ *" $arg "*) ;;
+ *) xrpath="$xrpath $arg" ;;
+ esac
+ fi
+ prev=
+ continue
+ ;;
+ shrext)
+ shrext_cmds="$arg"
+ prev=
+ continue
+ ;;
+ weak)
+ weak_libs="$weak_libs $arg"
+ prev=
+ continue
+ ;;
+ xcclinker)
+ linker_flags="$linker_flags $qarg"
+ compiler_flags="$compiler_flags $qarg"
+ prev=
+ func_append compile_command " $qarg"
+ func_append finalize_command " $qarg"
+ continue
+ ;;
+ xcompiler)
+ compiler_flags="$compiler_flags $qarg"
+ prev=
+ func_append compile_command " $qarg"
+ func_append finalize_command " $qarg"
+ continue
+ ;;
+ xlinker)
+ linker_flags="$linker_flags $qarg"
+ compiler_flags="$compiler_flags $wl$qarg"
+ prev=
+ func_append compile_command " $wl$qarg"
+ func_append finalize_command " $wl$qarg"
+ continue
+ ;;
+ *)
+ eval "$prev=\"\$arg\""
+ prev=
+ continue
+ ;;
+ esac
+ fi # test -n "$prev"
+
+ prevarg="$arg"
+
+ case $arg in
+ -all-static)
+ if test -n "$link_static_flag"; then
+ # See comment for -static flag below, for more details.
+ func_append compile_command " $link_static_flag"
+ func_append finalize_command " $link_static_flag"
+ fi
+ continue
+ ;;
+
+ -allow-undefined)
+ # FIXME: remove this flag sometime in the future.
+ func_fatal_error "\`-allow-undefined' must not be used because it is the default"
+ ;;
+
+ -avoid-version)
+ avoid_version=yes
+ continue
+ ;;
+
+ -dlopen)
+ prev=dlfiles
+ continue
+ ;;
+
+ -dlpreopen)
+ prev=dlprefiles
+ continue
+ ;;
+
+ -export-dynamic)
+ export_dynamic=yes
+ continue
+ ;;
+
+ -export-symbols | -export-symbols-regex)
+ if test -n "$export_symbols" || test -n "$export_symbols_regex"; then
+ func_fatal_error "more than one -exported-symbols argument is not allowed"
+ fi
+ if test "X$arg" = "X-export-symbols"; then
+ prev=expsyms
+ else
+ prev=expsyms_regex
+ fi
+ continue
+ ;;
+
+ -framework)
+ prev=framework
+ continue
+ ;;
+
+ -inst-prefix-dir)
+ prev=inst_prefix
+ continue
+ ;;
+
+ # The native IRIX linker understands -LANG:*, -LIST:* and -LNO:*
+ # so, if we see these flags be careful not to treat them like -L
+ -L[A-Z][A-Z]*:*)
+ case $with_gcc/$host in
+ no/*-*-irix* | /*-*-irix*)
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ ;;
+ esac
+ continue
+ ;;
+
+ -L*)
+ func_stripname '-L' '' "$arg"
+ dir=$func_stripname_result
+ if test -z "$dir"; then
+ if test "$#" -gt 0; then
+ func_fatal_error "require no space between \`-L' and \`$1'"
+ else
+ func_fatal_error "need path for \`-L' option"
+ fi
+ fi
+ # We need an absolute path.
+ case $dir in
+ [\\/]* | [A-Za-z]:[\\/]*) ;;
+ *)
+ absdir=`cd "$dir" && pwd`
+ test -z "$absdir" && \
+ func_fatal_error "cannot determine absolute directory name of \`$dir'"
+ dir="$absdir"
+ ;;
+ esac
+ case "$deplibs " in
+ *" -L$dir "*) ;;
+ *)
+ deplibs="$deplibs -L$dir"
+ lib_search_path="$lib_search_path $dir"
+ ;;
+ esac
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+ testbindir=`$ECHO "X$dir" | $Xsed -e 's*/lib$*/bin*'`
+ case :$dllsearchpath: in
+ *":$dir:"*) ;;
+ ::) dllsearchpath=$dir;;
+ *) dllsearchpath="$dllsearchpath:$dir";;
+ esac
+ case :$dllsearchpath: in
+ *":$testbindir:"*) ;;
+ ::) dllsearchpath=$testbindir;;
+ *) dllsearchpath="$dllsearchpath:$testbindir";;
+ esac
+ ;;
+ esac
+ continue
+ ;;
+
+ -l*)
+ if test "X$arg" = "X-lc" || test "X$arg" = "X-lm"; then
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-beos* | *-cegcc*)
+ # These systems don't actually have a C or math library (as such)
+ continue
+ ;;
+ *-*-os2*)
+ # These systems don't actually have a C library (as such)
+ test "X$arg" = "X-lc" && continue
+ ;;
+ *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+ # Do not include libc due to us having libc/libc_r.
+ test "X$arg" = "X-lc" && continue
+ ;;
+ *-*-rhapsody* | *-*-darwin1.[012])
+ # Rhapsody C and math libraries are in the System framework
+ deplibs="$deplibs System.ltframework"
+ continue
+ ;;
+ *-*-sco3.2v5* | *-*-sco5v6*)
+ # Causes problems with __ctype
+ test "X$arg" = "X-lc" && continue
+ ;;
+ *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*)
+ # Compiler inserts libc in the correct place for threads to work
+ test "X$arg" = "X-lc" && continue
+ ;;
+ esac
+ elif test "X$arg" = "X-lc_r"; then
+ case $host in
+ *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+ # Do not include libc_r directly, use -pthread flag.
+ continue
+ ;;
+ esac
+ fi
+ deplibs="$deplibs $arg"
+ continue
+ ;;
+
+ -module)
+ module=yes
+ continue
+ ;;
+
+ # Tru64 UNIX uses -model [arg] to determine the layout of C++
+ # classes, name mangling, and exception handling.
+ # Darwin uses the -arch flag to determine output architecture.
+ -model|-arch|-isysroot)
+ compiler_flags="$compiler_flags $arg"
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ prev=xcompiler
+ continue
+ ;;
+
+ -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe|-threads)
+ compiler_flags="$compiler_flags $arg"
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ case "$new_inherited_linker_flags " in
+ *" $arg "*) ;;
+ * ) new_inherited_linker_flags="$new_inherited_linker_flags $arg" ;;
+ esac
+ continue
+ ;;
+
+ -multi_module)
+ single_module="${wl}-multi_module"
+ continue
+ ;;
+
+ -no-fast-install)
+ fast_install=no
+ continue
+ ;;
+
+ -no-install)
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*)
+ # The PATH hackery in wrapper scripts is required on Windows
+ # and Darwin in order for the loader to find any dlls it needs.
+ func_warning "\`-no-install' is ignored for $host"
+ func_warning "assuming \`-no-fast-install' instead"
+ fast_install=no
+ ;;
+ *) no_install=yes ;;
+ esac
+ continue
+ ;;
+
+ -no-undefined)
+ allow_undefined=no
+ continue
+ ;;
+
+ -objectlist)
+ prev=objectlist
+ continue
+ ;;
+
+ -o) prev=output ;;
+
+ -precious-files-regex)
+ prev=precious_regex
+ continue
+ ;;
+
+ -release)
+ prev=release
+ continue
+ ;;
+
+ -rpath)
+ prev=rpath
+ continue
+ ;;
+
+ -R)
+ prev=xrpath
+ continue
+ ;;
+
+ -R*)
+ func_stripname '-R' '' "$arg"
+ dir=$func_stripname_result
+ # We need an absolute path.
+ case $dir in
+ [\\/]* | [A-Za-z]:[\\/]*) ;;
+ *)
+ func_fatal_error "only absolute run-paths are allowed"
+ ;;
+ esac
+ case "$xrpath " in
+ *" $dir "*) ;;
+ *) xrpath="$xrpath $dir" ;;
+ esac
+ continue
+ ;;
+
+ -shared)
+ # The effects of -shared are defined in a previous loop.
+ continue
+ ;;
+
+ -shrext)
+ prev=shrext
+ continue
+ ;;
+
+ -static | -static-libtool-libs)
+ # The effects of -static are defined in a previous loop.
+ # We used to do the same as -all-static on platforms that
+ # didn't have a PIC flag, but the assumption that the effects
+ # would be equivalent was wrong. It would break on at least
+ # Digital Unix and AIX.
+ continue
+ ;;
+
+ -thread-safe)
+ thread_safe=yes
+ continue
+ ;;
+
+ -version-info)
+ prev=vinfo
+ continue
+ ;;
+
+ -version-number)
+ prev=vinfo
+ vinfo_number=yes
+ continue
+ ;;
+
+ -weak)
+ prev=weak
+ continue
+ ;;
+
+ -Wc,*)
+ func_stripname '-Wc,' '' "$arg"
+ args=$func_stripname_result
+ arg=
+ save_ifs="$IFS"; IFS=','
+ for flag in $args; do
+ IFS="$save_ifs"
+ func_quote_for_eval "$flag"
+ arg="$arg $wl$func_quote_for_eval_result"
+ compiler_flags="$compiler_flags $func_quote_for_eval_result"
+ done
+ IFS="$save_ifs"
+ func_stripname ' ' '' "$arg"
+ arg=$func_stripname_result
+ ;;
+
+ -Wl,*)
+ func_stripname '-Wl,' '' "$arg"
+ args=$func_stripname_result
+ arg=
+ save_ifs="$IFS"; IFS=','
+ for flag in $args; do
+ IFS="$save_ifs"
+ func_quote_for_eval "$flag"
+ arg="$arg $wl$func_quote_for_eval_result"
+ compiler_flags="$compiler_flags $wl$func_quote_for_eval_result"
+ linker_flags="$linker_flags $func_quote_for_eval_result"
+ done
+ IFS="$save_ifs"
+ func_stripname ' ' '' "$arg"
+ arg=$func_stripname_result
+ ;;
+
+ -Xcompiler)
+ prev=xcompiler
+ continue
+ ;;
+
+ -Xlinker)
+ prev=xlinker
+ continue
+ ;;
+
+ -XCClinker)
+ prev=xcclinker
+ continue
+ ;;
+
+ # -msg_* for osf cc
+ -msg_*)
+ func_quote_for_eval "$arg"
+ arg="$func_quote_for_eval_result"
+ ;;
+
+ # -64, -mips[0-9] enable 64-bit mode on the SGI compiler
+ # -r[0-9][0-9]* specifies the processor on the SGI compiler
+ # -xarch=*, -xtarget=* enable 64-bit mode on the Sun compiler
+ # +DA*, +DD* enable 64-bit mode on the HP compiler
+ # -q* pass through compiler args for the IBM compiler
+ # -m*, -t[45]*, -txscale* pass through architecture-specific
+ # compiler args for GCC
+ # -F/path gives path to uninstalled frameworks, gcc on darwin
+ # -p, -pg, --coverage, -fprofile-* pass through profiling flag for GCC
+ # @file GCC response files
+ -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
+ -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*)
+ func_quote_for_eval "$arg"
+ arg="$func_quote_for_eval_result"
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ compiler_flags="$compiler_flags $arg"
+ continue
+ ;;
+
+ # Some other compiler flag.
+ -* | +*)
+ func_quote_for_eval "$arg"
+ arg="$func_quote_for_eval_result"
+ ;;
+
+ *.$objext)
+ # A standard object.
+ objs="$objs $arg"
+ ;;
+
+ *.lo)
+ # A libtool-controlled object.
+
+ # Check to see that this really is a libtool object.
+ if func_lalib_unsafe_p "$arg"; then
+ pic_object=
+ non_pic_object=
+
+ # Read the .lo file
+ func_source "$arg"
+
+ if test -z "$pic_object" ||
+ test -z "$non_pic_object" ||
+ test "$pic_object" = none &&
+ test "$non_pic_object" = none; then
+ func_fatal_error "cannot find name of object for \`$arg'"
+ fi
+
+ # Extract subdirectory from the argument.
+ func_dirname "$arg" "/" ""
+ xdir="$func_dirname_result"
+
+ if test "$pic_object" != none; then
+ # Prepend the subdirectory the object is found in.
+ pic_object="$xdir$pic_object"
+
+ if test "$prev" = dlfiles; then
+ if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
+ dlfiles="$dlfiles $pic_object"
+ prev=
+ continue
+ else
+ # If libtool objects are unsupported, then we need to preload.
+ prev=dlprefiles
+ fi
+ fi
+
+ # CHECK ME: I think I busted this. -Ossama
+ if test "$prev" = dlprefiles; then
+ # Preload the old-style object.
+ dlprefiles="$dlprefiles $pic_object"
+ prev=
+ fi
+
+ # A PIC object.
+ func_append libobjs " $pic_object"
+ arg="$pic_object"
+ fi
+
+ # Non-PIC object.
+ if test "$non_pic_object" != none; then
+ # Prepend the subdirectory the object is found in.
+ non_pic_object="$xdir$non_pic_object"
+
+ # A standard non-PIC object
+ func_append non_pic_objects " $non_pic_object"
+ if test -z "$pic_object" || test "$pic_object" = none ; then
+ arg="$non_pic_object"
+ fi
+ else
+ # If the PIC object exists, use it instead.
+ # $xdir was prepended to $pic_object above.
+ non_pic_object="$pic_object"
+ func_append non_pic_objects " $non_pic_object"
+ fi
+ else
+ # Only an error if not doing a dry-run.
+ if $opt_dry_run; then
+ # Extract subdirectory from the argument.
+ func_dirname "$arg" "/" ""
+ xdir="$func_dirname_result"
+
+ func_lo2o "$arg"
+ pic_object=$xdir$objdir/$func_lo2o_result
+ non_pic_object=$xdir$func_lo2o_result
+ func_append libobjs " $pic_object"
+ func_append non_pic_objects " $non_pic_object"
+ else
+ func_fatal_error "\`$arg' is not a valid libtool object"
+ fi
+ fi
+ ;;
+
+ *.$libext)
+ # An archive.
+ deplibs="$deplibs $arg"
+ old_deplibs="$old_deplibs $arg"
+ continue
+ ;;
+
+ *.la)
+ # A libtool-controlled library.
+
+ if test "$prev" = dlfiles; then
+ # This library was specified with -dlopen.
+ dlfiles="$dlfiles $arg"
+ prev=
+ elif test "$prev" = dlprefiles; then
+ # The library was specified with -dlpreopen.
+ dlprefiles="$dlprefiles $arg"
+ prev=
+ else
+ deplibs="$deplibs $arg"
+ fi
+ continue
+ ;;
+
+ # Some other compiler argument.
+ *)
+ # Unknown arguments in both finalize_command and compile_command need
+ # to be aesthetically quoted because they are evaled later.
+ func_quote_for_eval "$arg"
+ arg="$func_quote_for_eval_result"
+ ;;
+ esac # arg
+
+ # Now actually substitute the argument into the commands.
+ if test -n "$arg"; then
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ fi
+ done # argument parsing loop
+
+ test -n "$prev" && \
+ func_fatal_help "the \`$prevarg' option requires an argument"
+
+ if test "$export_dynamic" = yes && test -n "$export_dynamic_flag_spec"; then
+ eval arg=\"$export_dynamic_flag_spec\"
+ func_append compile_command " $arg"
+ func_append finalize_command " $arg"
+ fi
+
+ oldlibs=
+ # calculate the name of the file, without its directory
+ func_basename "$output"
+ outputname="$func_basename_result"
+ libobjs_save="$libobjs"
+
+ if test -n "$shlibpath_var"; then
+ # get the directories listed in $shlibpath_var
+ eval shlib_search_path=\`\$ECHO \"X\${$shlibpath_var}\" \| \$Xsed -e \'s/:/ /g\'\`
+ else
+ shlib_search_path=
+ fi
+ eval sys_lib_search_path=\"$sys_lib_search_path_spec\"
+ eval sys_lib_dlsearch_path=\"$sys_lib_dlsearch_path_spec\"
+
+ func_dirname "$output" "/" ""
+ output_objdir="$func_dirname_result$objdir"
+ # Create the object directory.
+ func_mkdir_p "$output_objdir"
+
+ # Determine the type of output
+ case $output in
+ "")
+ func_fatal_help "you must specify an output file"
+ ;;
+ *.$libext) linkmode=oldlib ;;
+ *.lo | *.$objext) linkmode=obj ;;
+ *.la) linkmode=lib ;;
+ *) linkmode=prog ;; # Anything else should be a program.
+ esac
+
+ specialdeplibs=
+
+ libs=
+ # Find all interdependent deplibs by searching for libraries
+ # that are linked more than once (e.g. -la -lb -la)
+ for deplib in $deplibs; do
+ if $opt_duplicate_deps ; then
+ case "$libs " in
+ *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ esac
+ fi
+ libs="$libs $deplib"
+ done
+
+ if test "$linkmode" = lib; then
+ libs="$predeps $libs $compiler_lib_search_path $postdeps"
+
+ # Compute libraries that are listed more than once in $predeps
+ # $postdeps and mark them as special (i.e., whose duplicates are
+ # not to be eliminated).
+ pre_post_deps=
+ if $opt_duplicate_compiler_generated_deps; then
+ for pre_post_dep in $predeps $postdeps; do
+ case "$pre_post_deps " in
+ *" $pre_post_dep "*) specialdeplibs="$specialdeplibs $pre_post_deps" ;;
+ esac
+ pre_post_deps="$pre_post_deps $pre_post_dep"
+ done
+ fi
+ pre_post_deps=
+ fi
+
+ deplibs=
+ newdependency_libs=
+ newlib_search_path=
+ need_relink=no # whether we're linking any uninstalled libtool libraries
+ notinst_deplibs= # not-installed libtool libraries
+ notinst_path= # paths that contain not-installed libtool libraries
+
+ case $linkmode in
+ lib)
+ passes="conv dlpreopen link"
+ for file in $dlfiles $dlprefiles; do
+ case $file in
+ *.la) ;;
+ *)
+ func_fatal_help "libraries can \`-dlopen' only libtool libraries: $file"
+ ;;
+ esac
+ done
+ ;;
+ prog)
+ compile_deplibs=
+ finalize_deplibs=
+ alldeplibs=no
+ newdlfiles=
+ newdlprefiles=
+ passes="conv scan dlopen dlpreopen link"
+ ;;
+ *) passes="conv"
+ ;;
+ esac
+
+ for pass in $passes; do
+ # The preopen pass in lib mode reverses $deplibs; put it back here
+ # so that -L comes before libs that need it for instance...
+ if test "$linkmode,$pass" = "lib,link"; then
+ ## FIXME: Find the place where the list is rebuilt in the wrong
+ ## order, and fix it there properly
+ tmp_deplibs=
+ for deplib in $deplibs; do
+ tmp_deplibs="$deplib $tmp_deplibs"
+ done
+ deplibs="$tmp_deplibs"
+ fi
+
+ if test "$linkmode,$pass" = "lib,link" ||
+ test "$linkmode,$pass" = "prog,scan"; then
+ libs="$deplibs"
+ deplibs=
+ fi
+ if test "$linkmode" = prog; then
+ case $pass in
+ dlopen) libs="$dlfiles" ;;
+ dlpreopen) libs="$dlprefiles" ;;
+ link)
+ libs="$deplibs %DEPLIBS%"
+ test "X$link_all_deplibs" != Xno && libs="$libs $dependency_libs"
+ ;;
+ esac
+ fi
+ if test "$linkmode,$pass" = "lib,dlpreopen"; then
+ # Collect and forward deplibs of preopened libtool libs
+ for lib in $dlprefiles; do
+ # Ignore non-libtool-libs
+ dependency_libs=
+ case $lib in
+ *.la) func_source "$lib" ;;
+ esac
+
+ # Collect preopened libtool deplibs, except any this library
+ # has declared as weak libs
+ for deplib in $dependency_libs; do
+ deplib_base=`$ECHO "X$deplib" | $Xsed -e "$basename"`
+ case " $weak_libs " in
+ *" $deplib_base "*) ;;
+ *) deplibs="$deplibs $deplib" ;;
+ esac
+ done
+ done
+ libs="$dlprefiles"
+ fi
+ if test "$pass" = dlopen; then
+ # Collect dlpreopened libraries
+ save_deplibs="$deplibs"
+ deplibs=
+ fi
+
+ for deplib in $libs; do
+ lib=
+ found=no
+ case $deplib in
+ -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe|-threads)
+ if test "$linkmode,$pass" = "prog,link"; then
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ else
+ compiler_flags="$compiler_flags $deplib"
+ if test "$linkmode" = lib ; then
+ case "$new_inherited_linker_flags " in
+ *" $deplib "*) ;;
+ * ) new_inherited_linker_flags="$new_inherited_linker_flags $deplib" ;;
+ esac
+ fi
+ fi
+ continue
+ ;;
+ -l*)
+ if test "$linkmode" != lib && test "$linkmode" != prog; then
+ func_warning "\`-l' is ignored for archives/objects"
+ continue
+ fi
+ func_stripname '-l' '' "$deplib"
+ name=$func_stripname_result
+ if test "$linkmode" = lib; then
+ searchdirs="$newlib_search_path $lib_search_path $compiler_lib_search_dirs $sys_lib_search_path $shlib_search_path"
+ else
+ searchdirs="$newlib_search_path $lib_search_path $sys_lib_search_path $shlib_search_path"
+ fi
+ for searchdir in $searchdirs; do
+ for search_ext in .la $std_shrext .so .a; do
+ # Search the libtool library
+ lib="$searchdir/lib${name}${search_ext}"
+ if test -f "$lib"; then
+ if test "$search_ext" = ".la"; then
+ found=yes
+ else
+ found=no
+ fi
+ break 2
+ fi
+ done
+ done
+ if test "$found" != yes; then
+ # deplib doesn't seem to be a libtool library
+ if test "$linkmode,$pass" = "prog,link"; then
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ else
+ deplibs="$deplib $deplibs"
+ test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs"
+ fi
+ continue
+ else # deplib is a libtool library
+ # If $allow_libtool_libs_with_static_runtimes && $deplib is a stdlib,
+ # We need to do some special things here, and not later.
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ case " $predeps $postdeps " in
+ *" $deplib "*)
+ if func_lalib_p "$lib"; then
+ library_names=
+ old_library=
+ func_source "$lib"
+ for l in $old_library $library_names; do
+ ll="$l"
+ done
+ if test "X$ll" = "X$old_library" ; then # only static version available
+ found=no
+ func_dirname "$lib" "" "."
+ ladir="$func_dirname_result"
+ lib=$ladir/$old_library
+ if test "$linkmode,$pass" = "prog,link"; then
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ else
+ deplibs="$deplib $deplibs"
+ test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs"
+ fi
+ continue
+ fi
+ fi
+ ;;
+ *) ;;
+ esac
+ fi
+ fi
+ ;; # -l
+ *.ltframework)
+ if test "$linkmode,$pass" = "prog,link"; then
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ else
+ deplibs="$deplib $deplibs"
+ if test "$linkmode" = lib ; then
+ case "$new_inherited_linker_flags " in
+ *" $deplib "*) ;;
+ * ) new_inherited_linker_flags="$new_inherited_linker_flags $deplib" ;;
+ esac
+ fi
+ fi
+ continue
+ ;;
+ -L*)
+ case $linkmode in
+ lib)
+ deplibs="$deplib $deplibs"
+ test "$pass" = conv && continue
+ newdependency_libs="$deplib $newdependency_libs"
+ func_stripname '-L' '' "$deplib"
+ newlib_search_path="$newlib_search_path $func_stripname_result"
+ ;;
+ prog)
+ if test "$pass" = conv; then
+ deplibs="$deplib $deplibs"
+ continue
+ fi
+ if test "$pass" = scan; then
+ deplibs="$deplib $deplibs"
+ else
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ fi
+ func_stripname '-L' '' "$deplib"
+ newlib_search_path="$newlib_search_path $func_stripname_result"
+ ;;
+ *)
+ func_warning "\`-L' is ignored for archives/objects"
+ ;;
+ esac # linkmode
+ continue
+ ;; # -L
+ -R*)
+ if test "$pass" = link; then
+ func_stripname '-R' '' "$deplib"
+ dir=$func_stripname_result
+ # Make sure the xrpath contains only unique directories.
+ case "$xrpath " in
+ *" $dir "*) ;;
+ *) xrpath="$xrpath $dir" ;;
+ esac
+ fi
+ deplibs="$deplib $deplibs"
+ continue
+ ;;
+ *.la) lib="$deplib" ;;
+ *.$libext)
+ if test "$pass" = conv; then
+ deplibs="$deplib $deplibs"
+ continue
+ fi
+ case $linkmode in
+ lib)
+ # Linking convenience modules into shared libraries is allowed,
+ # but linking other static libraries is non-portable.
+ case " $dlpreconveniencelibs " in
+ *" $deplib "*) ;;
+ *)
+ valid_a_lib=no
+ case $deplibs_check_method in
+ match_pattern*)
+ set dummy $deplibs_check_method; shift
+ match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
+ if eval "\$ECHO \"X$deplib\"" 2>/dev/null | $Xsed -e 10q \
+ | $EGREP "$match_pattern_regex" > /dev/null; then
+ valid_a_lib=yes
+ fi
+ ;;
+ pass_all)
+ valid_a_lib=yes
+ ;;
+ esac
+ if test "$valid_a_lib" != yes; then
+ $ECHO
+ $ECHO "*** Warning: Trying to link with static lib archive $deplib."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which you do not appear to have"
+ $ECHO "*** because the file extensions .$libext of this argument makes me believe"
+ $ECHO "*** that it is just a static archive that I should not use here."
+ else
+ $ECHO
+ $ECHO "*** Warning: Linking the shared library $output against the"
+ $ECHO "*** static library $deplib is not portable!"
+ deplibs="$deplib $deplibs"
+ fi
+ ;;
+ esac
+ continue
+ ;;
+ prog)
+ if test "$pass" != link; then
+ deplibs="$deplib $deplibs"
+ else
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ fi
+ continue
+ ;;
+ esac # linkmode
+ ;; # *.$libext
+ *.lo | *.$objext)
+ if test "$pass" = conv; then
+ deplibs="$deplib $deplibs"
+ elif test "$linkmode" = prog; then
+ if test "$pass" = dlpreopen || test "$dlopen_support" != yes || test "$build_libtool_libs" = no; then
+ # If there is no dlopen support or we're linking statically,
+ # we need to preload.
+ newdlprefiles="$newdlprefiles $deplib"
+ compile_deplibs="$deplib $compile_deplibs"
+ finalize_deplibs="$deplib $finalize_deplibs"
+ else
+ newdlfiles="$newdlfiles $deplib"
+ fi
+ fi
+ continue
+ ;;
+ %DEPLIBS%)
+ alldeplibs=yes
+ continue
+ ;;
+ esac # case $deplib
+
+ if test "$found" = yes || test -f "$lib"; then :
+ else
+ func_fatal_error "cannot find the library \`$lib' or unhandled argument \`$deplib'"
+ fi
+
+ # Check to see that this really is a libtool archive.
+ func_lalib_unsafe_p "$lib" \
+ || func_fatal_error "\`$lib' is not a valid libtool archive"
+
+ func_dirname "$lib" "" "."
+ ladir="$func_dirname_result"
+
+ dlname=
+ dlopen=
+ dlpreopen=
+ libdir=
+ library_names=
+ old_library=
+ inherited_linker_flags=
+ # If the library was installed with an old release of libtool,
+ # it will not redefine variables installed, or shouldnotlink
+ installed=yes
+ shouldnotlink=no
+ avoidtemprpath=
+
+
+ # Read the .la file
+ func_source "$lib"
+
+ # Convert "-framework foo" to "foo.ltframework"
+ if test -n "$inherited_linker_flags"; then
+ tmp_inherited_linker_flags=`$ECHO "X$inherited_linker_flags" | $Xsed -e 's/-framework \([^ $]*\)/\1.ltframework/g'`
+ for tmp_inherited_linker_flag in $tmp_inherited_linker_flags; do
+ case " $new_inherited_linker_flags " in
+ *" $tmp_inherited_linker_flag "*) ;;
+ *) new_inherited_linker_flags="$new_inherited_linker_flags $tmp_inherited_linker_flag";;
+ esac
+ done
+ fi
+ dependency_libs=`$ECHO "X $dependency_libs" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ if test "$linkmode,$pass" = "lib,link" ||
+ test "$linkmode,$pass" = "prog,scan" ||
+ { test "$linkmode" != prog && test "$linkmode" != lib; }; then
+ test -n "$dlopen" && dlfiles="$dlfiles $dlopen"
+ test -n "$dlpreopen" && dlprefiles="$dlprefiles $dlpreopen"
+ fi
+
+ if test "$pass" = conv; then
+ # Only check for convenience libraries
+ deplibs="$lib $deplibs"
+ if test -z "$libdir"; then
+ if test -z "$old_library"; then
+ func_fatal_error "cannot find name of link library for \`$lib'"
+ fi
+ # It is a libtool convenience library, so add in its objects.
+ convenience="$convenience $ladir/$objdir/$old_library"
+ old_convenience="$old_convenience $ladir/$objdir/$old_library"
+ tmp_libs=
+ for deplib in $dependency_libs; do
+ deplibs="$deplib $deplibs"
+ if $opt_duplicate_deps ; then
+ case "$tmp_libs " in
+ *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ esac
+ fi
+ tmp_libs="$tmp_libs $deplib"
+ done
+ elif test "$linkmode" != prog && test "$linkmode" != lib; then
+ func_fatal_error "\`$lib' is not a convenience library"
+ fi
+ continue
+ fi # $pass = conv
+
+
+ # Get the name of the library we link against.
+ linklib=
+ for l in $old_library $library_names; do
+ linklib="$l"
+ done
+ if test -z "$linklib"; then
+ func_fatal_error "cannot find name of link library for \`$lib'"
+ fi
+
+ # This library was specified with -dlopen.
+ if test "$pass" = dlopen; then
+ if test -z "$libdir"; then
+ func_fatal_error "cannot -dlopen a convenience library: \`$lib'"
+ fi
+ if test -z "$dlname" ||
+ test "$dlopen_support" != yes ||
+ test "$build_libtool_libs" = no; then
+ # If there is no dlname, no dlopen support or we're linking
+ # statically, we need to preload. We also need to preload any
+ # dependent libraries so libltdl's deplib preloader doesn't
+ # bomb out in the load deplibs phase.
+ dlprefiles="$dlprefiles $lib $dependency_libs"
+ else
+ newdlfiles="$newdlfiles $lib"
+ fi
+ continue
+ fi # $pass = dlopen
+
+ # We need an absolute path.
+ case $ladir in
+ [\\/]* | [A-Za-z]:[\\/]*) abs_ladir="$ladir" ;;
+ *)
+ abs_ladir=`cd "$ladir" && pwd`
+ if test -z "$abs_ladir"; then
+ func_warning "cannot determine absolute directory name of \`$ladir'"
+ func_warning "passing it literally to the linker, although it might fail"
+ abs_ladir="$ladir"
+ fi
+ ;;
+ esac
+ func_basename "$lib"
+ laname="$func_basename_result"
+
+ # Find the relevant object directory and library name.
+ if test "X$installed" = Xyes; then
+ if test ! -f "$libdir/$linklib" && test -f "$abs_ladir/$linklib"; then
+ func_warning "library \`$lib' was moved."
+ dir="$ladir"
+ absdir="$abs_ladir"
+ libdir="$abs_ladir"
+ else
+ dir="$libdir"
+ absdir="$libdir"
+ fi
+ test "X$hardcode_automatic" = Xyes && avoidtemprpath=yes
+ else
+ if test ! -f "$ladir/$objdir/$linklib" && test -f "$abs_ladir/$linklib"; then
+ dir="$ladir"
+ absdir="$abs_ladir"
+ # Remove this search path later
+ notinst_path="$notinst_path $abs_ladir"
+ else
+ dir="$ladir/$objdir"
+ absdir="$abs_ladir/$objdir"
+ # Remove this search path later
+ notinst_path="$notinst_path $abs_ladir"
+ fi
+ fi # $installed = yes
+ func_stripname 'lib' '.la' "$laname"
+ name=$func_stripname_result
+
+ # This library was specified with -dlpreopen.
+ if test "$pass" = dlpreopen; then
+ if test -z "$libdir" && test "$linkmode" = prog; then
+ func_fatal_error "only libraries may -dlpreopen a convenience library: \`$lib'"
+ fi
+ # Prefer using a static library (so that no silly _DYNAMIC symbols
+ # are required to link).
+ if test -n "$old_library"; then
+ newdlprefiles="$newdlprefiles $dir/$old_library"
+ # Keep a list of preopened convenience libraries to check
+ # that they are being used correctly in the link pass.
+ test -z "$libdir" && \
+ dlpreconveniencelibs="$dlpreconveniencelibs $dir/$old_library"
+ # Otherwise, use the dlname, so that lt_dlopen finds it.
+ elif test -n "$dlname"; then
+ newdlprefiles="$newdlprefiles $dir/$dlname"
+ else
+ newdlprefiles="$newdlprefiles $dir/$linklib"
+ fi
+ fi # $pass = dlpreopen
+
+ if test -z "$libdir"; then
+ # Link the convenience library
+ if test "$linkmode" = lib; then
+ deplibs="$dir/$old_library $deplibs"
+ elif test "$linkmode,$pass" = "prog,link"; then
+ compile_deplibs="$dir/$old_library $compile_deplibs"
+ finalize_deplibs="$dir/$old_library $finalize_deplibs"
+ else
+ deplibs="$lib $deplibs" # used for prog,scan pass
+ fi
+ continue
+ fi
+
+
+ if test "$linkmode" = prog && test "$pass" != link; then
+ newlib_search_path="$newlib_search_path $ladir"
+ deplibs="$lib $deplibs"
+
+ linkalldeplibs=no
+ if test "$link_all_deplibs" != no || test -z "$library_names" ||
+ test "$build_libtool_libs" = no; then
+ linkalldeplibs=yes
+ fi
+
+ tmp_libs=
+ for deplib in $dependency_libs; do
+ case $deplib in
+ -L*) func_stripname '-L' '' "$deplib"
+ newlib_search_path="$newlib_search_path $func_stripname_result"
+ ;;
+ esac
+ # Need to link against all dependency_libs?
+ if test "$linkalldeplibs" = yes; then
+ deplibs="$deplib $deplibs"
+ else
+ # Need to hardcode shared library paths
+ # or/and link against static libraries
+ newdependency_libs="$deplib $newdependency_libs"
+ fi
+ if $opt_duplicate_deps ; then
+ case "$tmp_libs " in
+ *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ esac
+ fi
+ tmp_libs="$tmp_libs $deplib"
+ done # for deplib
+ continue
+ fi # $linkmode = prog...
+
+ if test "$linkmode,$pass" = "prog,link"; then
+ if test -n "$library_names" &&
+ { { test "$prefer_static_libs" = no ||
+ test "$prefer_static_libs,$installed" = "built,yes"; } ||
+ test -z "$old_library"; }; then
+ # We need to hardcode the library path
+ if test -n "$shlibpath_var" && test -z "$avoidtemprpath" ; then
+ # Make sure the rpath contains only unique directories.
+ case "$temp_rpath:" in
+ *"$absdir:"*) ;;
+ *) temp_rpath="$temp_rpath$absdir:" ;;
+ esac
+ fi
+
+ # Hardcode the library path.
+ # Skip directories that are in the system default run-time
+ # search path.
+ case " $sys_lib_dlsearch_path " in
+ *" $absdir "*) ;;
+ *)
+ case "$compile_rpath " in
+ *" $absdir "*) ;;
+ *) compile_rpath="$compile_rpath $absdir"
+ esac
+ ;;
+ esac
+ case " $sys_lib_dlsearch_path " in
+ *" $libdir "*) ;;
+ *)
+ case "$finalize_rpath " in
+ *" $libdir "*) ;;
+ *) finalize_rpath="$finalize_rpath $libdir"
+ esac
+ ;;
+ esac
+ fi # $linkmode,$pass = prog,link...
+
+ if test "$alldeplibs" = yes &&
+ { test "$deplibs_check_method" = pass_all ||
+ { test "$build_libtool_libs" = yes &&
+ test -n "$library_names"; }; }; then
+ # We only need to search for static libraries
+ continue
+ fi
+ fi
+
+ link_static=no # Whether the deplib will be linked statically
+ use_static_libs=$prefer_static_libs
+ if test "$use_static_libs" = built && test "$installed" = yes; then
+ use_static_libs=no
+ fi
+ if test -n "$library_names" &&
+ { test "$use_static_libs" = no || test -z "$old_library"; }; then
+ case $host in
+ *cygwin* | *mingw* | *cegcc*)
+ # No point in relinking DLLs because paths are not encoded
+ notinst_deplibs="$notinst_deplibs $lib"
+ need_relink=no
+ ;;
+ *)
+ if test "$installed" = no; then
+ notinst_deplibs="$notinst_deplibs $lib"
+ need_relink=yes
+ fi
+ ;;
+ esac
+ # This is a shared library
+
+ # Warn about portability, can't link against -module's on some
+ # systems (darwin). Don't bleat about dlopened modules though!
+ dlopenmodule=""
+ for dlpremoduletest in $dlprefiles; do
+ if test "X$dlpremoduletest" = "X$lib"; then
+ dlopenmodule="$dlpremoduletest"
+ break
+ fi
+ done
+ if test -z "$dlopenmodule" && test "$shouldnotlink" = yes && test "$pass" = link; then
+ $ECHO
+ if test "$linkmode" = prog; then
+ $ECHO "*** Warning: Linking the executable $output against the loadable module"
+ else
+ $ECHO "*** Warning: Linking the shared library $output against the loadable module"
+ fi
+ $ECHO "*** $linklib is not portable!"
+ fi
+ if test "$linkmode" = lib &&
+ test "$hardcode_into_libs" = yes; then
+ # Hardcode the library path.
+ # Skip directories that are in the system default run-time
+ # search path.
+ case " $sys_lib_dlsearch_path " in
+ *" $absdir "*) ;;
+ *)
+ case "$compile_rpath " in
+ *" $absdir "*) ;;
+ *) compile_rpath="$compile_rpath $absdir"
+ esac
+ ;;
+ esac
+ case " $sys_lib_dlsearch_path " in
+ *" $libdir "*) ;;
+ *)
+ case "$finalize_rpath " in
+ *" $libdir "*) ;;
+ *) finalize_rpath="$finalize_rpath $libdir"
+ esac
+ ;;
+ esac
+ fi
+
+ if test -n "$old_archive_from_expsyms_cmds"; then
+ # figure out the soname
+ set dummy $library_names
+ shift
+ realname="$1"
+ shift
+ libname=`eval "\\$ECHO \"$libname_spec\""`
+ # use dlname if we got it. it's perfectly good, no?
+ if test -n "$dlname"; then
+ soname="$dlname"
+ elif test -n "$soname_spec"; then
+ # bleh windows
+ case $host in
+ *cygwin* | mingw* | *cegcc*)
+ func_arith $current - $age
+ major=$func_arith_result
+ versuffix="-$major"
+ ;;
+ esac
+ eval soname=\"$soname_spec\"
+ else
+ soname="$realname"
+ fi
+
+ # Make a new name for the extract_expsyms_cmds to use
+ soroot="$soname"
+ func_basename "$soroot"
+ soname="$func_basename_result"
+ func_stripname 'lib' '.dll' "$soname"
+ newlib=libimp-$func_stripname_result.a
+
+ # If the library has no export list, then create one now
+ if test -f "$output_objdir/$soname-def"; then :
+ else
+ func_verbose "extracting exported symbol list from \`$soname'"
+ func_execute_cmds "$extract_expsyms_cmds" 'exit $?'
+ fi
+
+ # Create $newlib
+ if test -f "$output_objdir/$newlib"; then :; else
+ func_verbose "generating import library for \`$soname'"
+ func_execute_cmds "$old_archive_from_expsyms_cmds" 'exit $?'
+ fi
+ # make sure the library variables are pointing to the new library
+ dir=$output_objdir
+ linklib=$newlib
+ fi # test -n "$old_archive_from_expsyms_cmds"
+
+ if test "$linkmode" = prog || test "$mode" != relink; then
+ add_shlibpath=
+ add_dir=
+ add=
+ lib_linked=yes
+ case $hardcode_action in
+ immediate | unsupported)
+ if test "$hardcode_direct" = no; then
+ add="$dir/$linklib"
+ case $host in
+ *-*-sco3.2v5.0.[024]*) add_dir="-L$dir" ;;
+ *-*-sysv4*uw2*) add_dir="-L$dir" ;;
+ *-*-sysv5OpenUNIX* | *-*-sysv5UnixWare7.[01].[10]* | \
+ *-*-unixware7*) add_dir="-L$dir" ;;
+ *-*-darwin* )
+ # if the lib is a (non-dlopened) module then we can not
+ # link against it, someone is ignoring the earlier warnings
+ if /usr/bin/file -L $add 2> /dev/null |
+ $GREP ": [^:]* bundle" >/dev/null ; then
+ if test "X$dlopenmodule" != "X$lib"; then
+ $ECHO "*** Warning: lib $linklib is a module, not a shared library"
+ if test -z "$old_library" ; then
+ $ECHO
+ $ECHO "*** And there doesn't seem to be a static archive available"
+ $ECHO "*** The link will probably fail, sorry"
+ else
+ add="$dir/$old_library"
+ fi
+ elif test -n "$old_library"; then
+ add="$dir/$old_library"
+ fi
+ fi
+ esac
+ elif test "$hardcode_minus_L" = no; then
+ case $host in
+ *-*-sunos*) add_shlibpath="$dir" ;;
+ esac
+ add_dir="-L$dir"
+ add="-l$name"
+ elif test "$hardcode_shlibpath_var" = no; then
+ add_shlibpath="$dir"
+ add="-l$name"
+ else
+ lib_linked=no
+ fi
+ ;;
+ relink)
+ if test "$hardcode_direct" = yes &&
+ test "$hardcode_direct_absolute" = no; then
+ add="$dir/$linklib"
+ elif test "$hardcode_minus_L" = yes; then
+ add_dir="-L$dir"
+ # Try looking first in the location we're being installed to.
+ if test -n "$inst_prefix_dir"; then
+ case $libdir in
+ [\\/]*)
+ add_dir="$add_dir -L$inst_prefix_dir$libdir"
+ ;;
+ esac
+ fi
+ add="-l$name"
+ elif test "$hardcode_shlibpath_var" = yes; then
+ add_shlibpath="$dir"
+ add="-l$name"
+ else
+ lib_linked=no
+ fi
+ ;;
+ *) lib_linked=no ;;
+ esac
+
+ if test "$lib_linked" != yes; then
+ func_fatal_configuration "unsupported hardcode properties"
+ fi
+
+ if test -n "$add_shlibpath"; then
+ case :$compile_shlibpath: in
+ *":$add_shlibpath:"*) ;;
+ *) compile_shlibpath="$compile_shlibpath$add_shlibpath:" ;;
+ esac
+ fi
+ if test "$linkmode" = prog; then
+ test -n "$add_dir" && compile_deplibs="$add_dir $compile_deplibs"
+ test -n "$add" && compile_deplibs="$add $compile_deplibs"
+ else
+ test -n "$add_dir" && deplibs="$add_dir $deplibs"
+ test -n "$add" && deplibs="$add $deplibs"
+ if test "$hardcode_direct" != yes &&
+ test "$hardcode_minus_L" != yes &&
+ test "$hardcode_shlibpath_var" = yes; then
+ case :$finalize_shlibpath: in
+ *":$libdir:"*) ;;
+ *) finalize_shlibpath="$finalize_shlibpath$libdir:" ;;
+ esac
+ fi
+ fi
+ fi
+
+ if test "$linkmode" = prog || test "$mode" = relink; then
+ add_shlibpath=
+ add_dir=
+ add=
+ # Finalize command for both is simple: just hardcode it.
+ if test "$hardcode_direct" = yes &&
+ test "$hardcode_direct_absolute" = no; then
+ add="$libdir/$linklib"
+ elif test "$hardcode_minus_L" = yes; then
+ add_dir="-L$libdir"
+ add="-l$name"
+ elif test "$hardcode_shlibpath_var" = yes; then
+ case :$finalize_shlibpath: in
+ *":$libdir:"*) ;;
+ *) finalize_shlibpath="$finalize_shlibpath$libdir:" ;;
+ esac
+ add="-l$name"
+ elif test "$hardcode_automatic" = yes; then
+ if test -n "$inst_prefix_dir" &&
+ test -f "$inst_prefix_dir$libdir/$linklib" ; then
+ add="$inst_prefix_dir$libdir/$linklib"
+ else
+ add="$libdir/$linklib"
+ fi
+ else
+ # We cannot seem to hardcode it, guess we'll fake it.
+ add_dir="-L$libdir"
+ # Try looking first in the location we're being installed to.
+ if test -n "$inst_prefix_dir"; then
+ case $libdir in
+ [\\/]*)
+ add_dir="$add_dir -L$inst_prefix_dir$libdir"
+ ;;
+ esac
+ fi
+ add="-l$name"
+ fi
+
+ if test "$linkmode" = prog; then
+ test -n "$add_dir" && finalize_deplibs="$add_dir $finalize_deplibs"
+ test -n "$add" && finalize_deplibs="$add $finalize_deplibs"
+ else
+ test -n "$add_dir" && deplibs="$add_dir $deplibs"
+ test -n "$add" && deplibs="$add $deplibs"
+ fi
+ fi
+ elif test "$linkmode" = prog; then
+ # Here we assume that one of hardcode_direct or hardcode_minus_L
+ # is not unsupported. This is valid on all known static and
+ # shared platforms.
+ if test "$hardcode_direct" != unsupported; then
+ test -n "$old_library" && linklib="$old_library"
+ compile_deplibs="$dir/$linklib $compile_deplibs"
+ finalize_deplibs="$dir/$linklib $finalize_deplibs"
+ else
+ compile_deplibs="-l$name -L$dir $compile_deplibs"
+ finalize_deplibs="-l$name -L$dir $finalize_deplibs"
+ fi
+ elif test "$build_libtool_libs" = yes; then
+ # Not a shared library
+ if test "$deplibs_check_method" != pass_all; then
+ # We're trying link a shared library against a static one
+ # but the system doesn't support it.
+
+ # Just print a warning and add the library to dependency_libs so
+ # that the program can be linked against the static library.
+ $ECHO
+ $ECHO "*** Warning: This system can not link to static lib archive $lib."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which you do not appear to have."
+ if test "$module" = yes; then
+ $ECHO "*** But as you try to build a module library, libtool will still create "
+ $ECHO "*** a static module, that should work as long as the dlopening application"
+ $ECHO "*** is linked with the -dlopen flag to resolve symbols at runtime."
+ if test -z "$global_symbol_pipe"; then
+ $ECHO
+ $ECHO "*** However, this would only work if libtool was able to extract symbol"
+ $ECHO "*** lists from a program, using \`nm' or equivalent, but libtool could"
+ $ECHO "*** not find such a program. So, this module is probably useless."
+ $ECHO "*** \`nm' from GNU binutils and a full rebuild may help."
+ fi
+ if test "$build_old_libs" = no; then
+ build_libtool_libs=module
+ build_old_libs=yes
+ else
+ build_libtool_libs=no
+ fi
+ fi
+ else
+ deplibs="$dir/$old_library $deplibs"
+ link_static=yes
+ fi
+ fi # link shared/static library?
+
+ if test "$linkmode" = lib; then
+ if test -n "$dependency_libs" &&
+ { test "$hardcode_into_libs" != yes ||
+ test "$build_old_libs" = yes ||
+ test "$link_static" = yes; }; then
+ # Extract -R from dependency_libs
+ temp_deplibs=
+ for libdir in $dependency_libs; do
+ case $libdir in
+ -R*) func_stripname '-R' '' "$libdir"
+ temp_xrpath=$func_stripname_result
+ case " $xrpath " in
+ *" $temp_xrpath "*) ;;
+ *) xrpath="$xrpath $temp_xrpath";;
+ esac;;
+ *) temp_deplibs="$temp_deplibs $libdir";;
+ esac
+ done
+ dependency_libs="$temp_deplibs"
+ fi
+
+ newlib_search_path="$newlib_search_path $absdir"
+ # Link against this library
+ test "$link_static" = no && newdependency_libs="$abs_ladir/$laname $newdependency_libs"
+ # ... and its dependency_libs
+ tmp_libs=
+ for deplib in $dependency_libs; do
+ newdependency_libs="$deplib $newdependency_libs"
+ if $opt_duplicate_deps ; then
+ case "$tmp_libs " in
+ *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+ esac
+ fi
+ tmp_libs="$tmp_libs $deplib"
+ done
+
+ if test "$link_all_deplibs" != no; then
+ # Add the search paths of all dependency libraries
+ for deplib in $dependency_libs; do
+ path=
+ case $deplib in
+ -L*) path="$deplib" ;;
+ *.la)
+ func_dirname "$deplib" "" "."
+ dir="$func_dirname_result"
+ # We need an absolute path.
+ case $dir in
+ [\\/]* | [A-Za-z]:[\\/]*) absdir="$dir" ;;
+ *)
+ absdir=`cd "$dir" && pwd`
+ if test -z "$absdir"; then
+ func_warning "cannot determine absolute directory name of \`$dir'"
+ absdir="$dir"
+ fi
+ ;;
+ esac
+ if $GREP "^installed=no" $deplib > /dev/null; then
+ case $host in
+ *-*-darwin*)
+ depdepl=
+ eval deplibrary_names=`${SED} -n -e 's/^library_names=\(.*\)$/\1/p' $deplib`
+ if test -n "$deplibrary_names" ; then
+ for tmp in $deplibrary_names ; do
+ depdepl=$tmp
+ done
+ if test -f "$absdir/$objdir/$depdepl" ; then
+ depdepl="$absdir/$objdir/$depdepl"
+ darwin_install_name=`${OTOOL} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'`
+ if test -z "$darwin_install_name"; then
+ darwin_install_name=`${OTOOL64} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'`
+ fi
+ compiler_flags="$compiler_flags ${wl}-dylib_file ${wl}${darwin_install_name}:${depdepl}"
+ linker_flags="$linker_flags -dylib_file ${darwin_install_name}:${depdepl}"
+ path=
+ fi
+ fi
+ ;;
+ *)
+ path="-L$absdir/$objdir"
+ ;;
+ esac
+ else
+ eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
+ test -z "$libdir" && \
+ func_fatal_error "\`$deplib' is not a valid libtool archive"
+ test "$absdir" != "$libdir" && \
+ func_warning "\`$deplib' seems to be moved"
+
+ path="-L$absdir"
+ fi
+ ;;
+ esac
+ case " $deplibs " in
+ *" $path "*) ;;
+ *) deplibs="$path $deplibs" ;;
+ esac
+ done
+ fi # link_all_deplibs != no
+ fi # linkmode = lib
+ done # for deplib in $libs
+ if test "$pass" = link; then
+ if test "$linkmode" = "prog"; then
+ compile_deplibs="$new_inherited_linker_flags $compile_deplibs"
+ finalize_deplibs="$new_inherited_linker_flags $finalize_deplibs"
+ else
+ compiler_flags="$compiler_flags "`$ECHO "X $new_inherited_linker_flags" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ fi
+ fi
+ dependency_libs="$newdependency_libs"
+ if test "$pass" = dlpreopen; then
+ # Link the dlpreopened libraries before other libraries
+ for deplib in $save_deplibs; do
+ deplibs="$deplib $deplibs"
+ done
+ fi
+ if test "$pass" != dlopen; then
+ if test "$pass" != conv; then
+ # Make sure lib_search_path contains only unique directories.
+ lib_search_path=
+ for dir in $newlib_search_path; do
+ case "$lib_search_path " in
+ *" $dir "*) ;;
+ *) lib_search_path="$lib_search_path $dir" ;;
+ esac
+ done
+ newlib_search_path=
+ fi
+
+ if test "$linkmode,$pass" != "prog,link"; then
+ vars="deplibs"
+ else
+ vars="compile_deplibs finalize_deplibs"
+ fi
+ for var in $vars dependency_libs; do
+ # Add libraries to $var in reverse order
+ eval tmp_libs=\"\$$var\"
+ new_libs=
+ for deplib in $tmp_libs; do
+ # FIXME: Pedantically, this is the right thing to do, so
+ # that some nasty dependency loop isn't accidentally
+ # broken:
+ #new_libs="$deplib $new_libs"
+ # Pragmatically, this seems to cause very few problems in
+ # practice:
+ case $deplib in
+ -L*) new_libs="$deplib $new_libs" ;;
+ -R*) ;;
+ *)
+ # And here is the reason: when a library appears more
+ # than once as an explicit dependence of a library, or
+ # is implicitly linked in more than once by the
+ # compiler, it is considered special, and multiple
+ # occurrences thereof are not removed. Compare this
+ # with having the same library being listed as a
+ # dependency of multiple other libraries: in this case,
+ # we know (pedantically, we assume) the library does not
+ # need to be listed more than once, so we keep only the
+ # last copy. This is not always right, but it is rare
+ # enough that we require users that really mean to play
+ # such unportable linking tricks to link the library
+ # using -Wl,-lname, so that libtool does not consider it
+ # for duplicate removal.
+ case " $specialdeplibs " in
+ *" $deplib "*) new_libs="$deplib $new_libs" ;;
+ *)
+ case " $new_libs " in
+ *" $deplib "*) ;;
+ *) new_libs="$deplib $new_libs" ;;
+ esac
+ ;;
+ esac
+ ;;
+ esac
+ done
+ tmp_libs=
+ for deplib in $new_libs; do
+ case $deplib in
+ -L*)
+ case " $tmp_libs " in
+ *" $deplib "*) ;;
+ *) tmp_libs="$tmp_libs $deplib" ;;
+ esac
+ ;;
+ *) tmp_libs="$tmp_libs $deplib" ;;
+ esac
+ done
+ eval $var=\"$tmp_libs\"
+ done # for var
+ fi
+ # Last step: remove runtime libs from dependency_libs
+ # (they stay in deplibs)
+ tmp_libs=
+ for i in $dependency_libs ; do
+ case " $predeps $postdeps $compiler_lib_search_path " in
+ *" $i "*)
+ i=""
+ ;;
+ esac
+ if test -n "$i" ; then
+ tmp_libs="$tmp_libs $i"
+ fi
+ done
+ dependency_libs=$tmp_libs
+ done # for pass
+ if test "$linkmode" = prog; then
+ dlfiles="$newdlfiles"
+ fi
+ if test "$linkmode" = prog || test "$linkmode" = lib; then
+ dlprefiles="$newdlprefiles"
+ fi
+
+ case $linkmode in
+ oldlib)
+ if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+ func_warning "\`-dlopen' is ignored for archives"
+ fi
+
+ case " $deplibs" in
+ *\ -l* | *\ -L*)
+ func_warning "\`-l' and \`-L' are ignored for archives" ;;
+ esac
+
+ test -n "$rpath" && \
+ func_warning "\`-rpath' is ignored for archives"
+
+ test -n "$xrpath" && \
+ func_warning "\`-R' is ignored for archives"
+
+ test -n "$vinfo" && \
+ func_warning "\`-version-info/-version-number' is ignored for archives"
+
+ test -n "$release" && \
+ func_warning "\`-release' is ignored for archives"
+
+ test -n "$export_symbols$export_symbols_regex" && \
+ func_warning "\`-export-symbols' is ignored for archives"
+
+ # Now set the variables for building old libraries.
+ build_libtool_libs=no
+ oldlibs="$output"
+ objs="$objs$old_deplibs"
+ ;;
+
+ lib)
+ # Make sure we only generate libraries of the form `libNAME.la'.
+ case $outputname in
+ lib*)
+ func_stripname 'lib' '.la' "$outputname"
+ name=$func_stripname_result
+ eval shared_ext=\"$shrext_cmds\"
+ eval libname=\"$libname_spec\"
+ ;;
+ *)
+ test "$module" = no && \
+ func_fatal_help "libtool library \`$output' must begin with \`lib'"
+
+ if test "$need_lib_prefix" != no; then
+ # Add the "lib" prefix for modules if required
+ func_stripname '' '.la' "$outputname"
+ name=$func_stripname_result
+ eval shared_ext=\"$shrext_cmds\"
+ eval libname=\"$libname_spec\"
+ else
+ func_stripname '' '.la' "$outputname"
+ libname=$func_stripname_result
+ fi
+ ;;
+ esac
+
+ if test -n "$objs"; then
+ if test "$deplibs_check_method" != pass_all; then
+ func_fatal_error "cannot build libtool library \`$output' from non-libtool objects on this host:$objs"
+ else
+ $ECHO
+ $ECHO "*** Warning: Linking the shared library $output against the non-libtool"
+ $ECHO "*** objects $objs is not portable!"
+ libobjs="$libobjs $objs"
+ fi
+ fi
+
+ test "$dlself" != no && \
+ func_warning "\`-dlopen self' is ignored for libtool libraries"
+
+ set dummy $rpath
+ shift
+ test "$#" -gt 1 && \
+ func_warning "ignoring multiple \`-rpath's for a libtool library"
+
+ install_libdir="$1"
+
+ oldlibs=
+ if test -z "$rpath"; then
+ if test "$build_libtool_libs" = yes; then
+ # Building a libtool convenience library.
+ # Some compilers have problems with a `.al' extension so
+ # convenience libraries should have the same extension an
+ # archive normally would.
+ oldlibs="$output_objdir/$libname.$libext $oldlibs"
+ build_libtool_libs=convenience
+ build_old_libs=yes
+ fi
+
+ test -n "$vinfo" && \
+ func_warning "\`-version-info/-version-number' is ignored for convenience libraries"
+
+ test -n "$release" && \
+ func_warning "\`-release' is ignored for convenience libraries"
+ else
+
+ # Parse the version information argument.
+ save_ifs="$IFS"; IFS=':'
+ set dummy $vinfo 0 0 0
+ shift
+ IFS="$save_ifs"
+
+ test -n "$7" && \
+ func_fatal_help "too many parameters to \`-version-info'"
+
+ # convert absolute version numbers to libtool ages
+ # this retains compatibility with .la files and attempts
+ # to make the code below a bit more comprehensible
+
+ case $vinfo_number in
+ yes)
+ number_major="$1"
+ number_minor="$2"
+ number_revision="$3"
+ #
+ # There are really only two kinds -- those that
+ # use the current revision as the major version
+ # and those that subtract age and use age as
+ # a minor version. But, then there is irix
+ # which has an extra 1 added just for fun
+ #
+ case $version_type in
+ darwin|linux|osf|windows|none)
+ func_arith $number_major + $number_minor
+ current=$func_arith_result
+ age="$number_minor"
+ revision="$number_revision"
+ ;;
+ freebsd-aout|freebsd-elf|sunos)
+ current="$number_major"
+ revision="$number_minor"
+ age="0"
+ ;;
+ irix|nonstopux)
+ func_arith $number_major + $number_minor
+ current=$func_arith_result
+ age="$number_minor"
+ revision="$number_minor"
+ lt_irix_increment=no
+ ;;
+ *)
+ func_fatal_configuration "$modename: unknown library version type \`$version_type'"
+ ;;
+ esac
+ ;;
+ no)
+ current="$1"
+ revision="$2"
+ age="$3"
+ ;;
+ esac
+
+ # Check that each of the things are valid numbers.
+ case $current in
+ 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+ *)
+ func_error "CURRENT \`$current' must be a nonnegative integer"
+ func_fatal_error "\`$vinfo' is not valid version information"
+ ;;
+ esac
+
+ case $revision in
+ 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+ *)
+ func_error "REVISION \`$revision' must be a nonnegative integer"
+ func_fatal_error "\`$vinfo' is not valid version information"
+ ;;
+ esac
+
+ case $age in
+ 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+ *)
+ func_error "AGE \`$age' must be a nonnegative integer"
+ func_fatal_error "\`$vinfo' is not valid version information"
+ ;;
+ esac
+
+ if test "$age" -gt "$current"; then
+ func_error "AGE \`$age' is greater than the current interface number \`$current'"
+ func_fatal_error "\`$vinfo' is not valid version information"
+ fi
+
+ # Calculate the version variables.
+ major=
+ versuffix=
+ verstring=
+ case $version_type in
+ none) ;;
+
+ darwin)
+ # Like Linux, but with the current version available in
+ # verstring for coding it into the library header
+ func_arith $current - $age
+ major=.$func_arith_result
+ versuffix="$major.$age.$revision"
+ # Darwin ld doesn't like 0 for these options...
+ func_arith $current + 1
+ minor_current=$func_arith_result
+ xlcverstring="${wl}-compatibility_version ${wl}$minor_current ${wl}-current_version ${wl}$minor_current.$revision"
+ verstring="-compatibility_version $minor_current -current_version $minor_current.$revision"
+ ;;
+
+ freebsd-aout)
+ major=".$current"
+ versuffix=".$current.$revision";
+ ;;
+
+ freebsd-elf)
+ major=".$current"
+ versuffix=".$current"
+ ;;
+
+ irix | nonstopux)
+ if test "X$lt_irix_increment" = "Xno"; then
+ func_arith $current - $age
+ else
+ func_arith $current - $age + 1
+ fi
+ major=$func_arith_result
+
+ case $version_type in
+ nonstopux) verstring_prefix=nonstopux ;;
+ *) verstring_prefix=sgi ;;
+ esac
+ verstring="$verstring_prefix$major.$revision"
+
+ # Add in all the interfaces that we are compatible with.
+ loop=$revision
+ while test "$loop" -ne 0; do
+ func_arith $revision - $loop
+ iface=$func_arith_result
+ func_arith $loop - 1
+ loop=$func_arith_result
+ verstring="$verstring_prefix$major.$iface:$verstring"
+ done
+
+ # Before this point, $major must not contain `.'.
+ major=.$major
+ versuffix="$major.$revision"
+ ;;
+
+ linux)
+ func_arith $current - $age
+ major=.$func_arith_result
+ versuffix="$major.$age.$revision"
+ ;;
+
+ osf)
+ func_arith $current - $age
+ major=.$func_arith_result
+ versuffix=".$current.$age.$revision"
+ verstring="$current.$age.$revision"
+
+ # Add in all the interfaces that we are compatible with.
+ loop=$age
+ while test "$loop" -ne 0; do
+ func_arith $current - $loop
+ iface=$func_arith_result
+ func_arith $loop - 1
+ loop=$func_arith_result
+ verstring="$verstring:${iface}.0"
+ done
+
+ # Make executables depend on our current version.
+ verstring="$verstring:${current}.0"
+ ;;
+
+ qnx)
+ major=".$current"
+ versuffix=".$current"
+ ;;
+
+ sunos)
+ major=".$current"
+ versuffix=".$current.$revision"
+ ;;
+
+ windows)
+ # Use '-' rather than '.', since we only want one
+ # extension on DOS 8.3 filesystems.
+ func_arith $current - $age
+ major=$func_arith_result
+ versuffix="-$major"
+ ;;
+
+ *)
+ func_fatal_configuration "unknown library version type \`$version_type'"
+ ;;
+ esac
+
+ # Clear the version info if we defaulted, and they specified a release.
+ if test -z "$vinfo" && test -n "$release"; then
+ major=
+ case $version_type in
+ darwin)
+ # we can't check for "0.0" in archive_cmds due to quoting
+ # problems, so we reset it completely
+ verstring=
+ ;;
+ *)
+ verstring="0.0"
+ ;;
+ esac
+ if test "$need_version" = no; then
+ versuffix=
+ else
+ versuffix=".0.0"
+ fi
+ fi
+
+ # Remove version info from name if versioning should be avoided
+ if test "$avoid_version" = yes && test "$need_version" = no; then
+ major=
+ versuffix=
+ verstring=""
+ fi
+
+ # Check to see if the archive will have undefined symbols.
+ if test "$allow_undefined" = yes; then
+ if test "$allow_undefined_flag" = unsupported; then
+ func_warning "undefined symbols not allowed in $host shared libraries"
+ build_libtool_libs=no
+ build_old_libs=yes
+ fi
+ else
+ # Don't allow undefined symbols.
+ allow_undefined_flag="$no_undefined_flag"
+ fi
+
+ fi
+
+ func_generate_dlsyms "$libname" "$libname" "yes"
+ libobjs="$libobjs $symfileobj"
+ test "X$libobjs" = "X " && libobjs=
+
+ if test "$mode" != relink; then
+ # Remove our outputs, but don't remove object files since they
+ # may have been created when compiling PIC objects.
+ removelist=
+ tempremovelist=`$ECHO "$output_objdir/*"`
+ for p in $tempremovelist; do
+ case $p in
+ *.$objext | *.gcno)
+ ;;
+ $output_objdir/$outputname | $output_objdir/$libname.* | $output_objdir/${libname}${release}.*)
+ if test "X$precious_files_regex" != "X"; then
+ if $ECHO "$p" | $EGREP -e "$precious_files_regex" >/dev/null 2>&1
+ then
+ continue
+ fi
+ fi
+ removelist="$removelist $p"
+ ;;
+ *) ;;
+ esac
+ done
+ test -n "$removelist" && \
+ func_show_eval "${RM}r \$removelist"
+ fi
+
+ # Now set the variables for building old libraries.
+ if test "$build_old_libs" = yes && test "$build_libtool_libs" != convenience ; then
+ oldlibs="$oldlibs $output_objdir/$libname.$libext"
+
+ # Transform .lo files to .o files.
+ oldobjs="$objs "`$ECHO "X$libobjs" | $SP2NL | $Xsed -e '/\.'${libext}'$/d' -e "$lo2o" | $NL2SP`
+ fi
+
+ # Eliminate all temporary directories.
+ #for path in $notinst_path; do
+ # lib_search_path=`$ECHO "X$lib_search_path " | $Xsed -e "s% $path % %g"`
+ # deplibs=`$ECHO "X$deplibs " | $Xsed -e "s% -L$path % %g"`
+ # dependency_libs=`$ECHO "X$dependency_libs " | $Xsed -e "s% -L$path % %g"`
+ #done
+
+ if test -n "$xrpath"; then
+ # If the user specified any rpath flags, then add them.
+ temp_xrpath=
+ for libdir in $xrpath; do
+ temp_xrpath="$temp_xrpath -R$libdir"
+ case "$finalize_rpath " in
+ *" $libdir "*) ;;
+ *) finalize_rpath="$finalize_rpath $libdir" ;;
+ esac
+ done
+ if test "$hardcode_into_libs" != yes || test "$build_old_libs" = yes; then
+ dependency_libs="$temp_xrpath $dependency_libs"
+ fi
+ fi
+
+ # Make sure dlfiles contains only unique files that won't be dlpreopened
+ old_dlfiles="$dlfiles"
+ dlfiles=
+ for lib in $old_dlfiles; do
+ case " $dlprefiles $dlfiles " in
+ *" $lib "*) ;;
+ *) dlfiles="$dlfiles $lib" ;;
+ esac
+ done
+
+ # Make sure dlprefiles contains only unique files
+ old_dlprefiles="$dlprefiles"
+ dlprefiles=
+ for lib in $old_dlprefiles; do
+ case "$dlprefiles " in
+ *" $lib "*) ;;
+ *) dlprefiles="$dlprefiles $lib" ;;
+ esac
+ done
+
+ if test "$build_libtool_libs" = yes; then
+ if test -n "$rpath"; then
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-beos* | *-cegcc*)
+ # these systems don't actually have a c library (as such)!
+ ;;
+ *-*-rhapsody* | *-*-darwin1.[012])
+ # Rhapsody C library is in the System framework
+ deplibs="$deplibs System.ltframework"
+ ;;
+ *-*-netbsd*)
+ # Don't link with libc until the a.out ld.so is fixed.
+ ;;
+ *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+ # Do not include libc due to us having libc/libc_r.
+ ;;
+ *-*-sco3.2v5* | *-*-sco5v6*)
+ # Causes problems with __ctype
+ ;;
+ *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*)
+ # Compiler inserts libc in the correct place for threads to work
+ ;;
+ *)
+ # Add libc to deplibs on all other systems if necessary.
+ if test "$build_libtool_need_lc" = "yes"; then
+ deplibs="$deplibs -lc"
+ fi
+ ;;
+ esac
+ fi
+
+ # Transform deplibs into only deplibs that can be linked in shared.
+ name_save=$name
+ libname_save=$libname
+ release_save=$release
+ versuffix_save=$versuffix
+ major_save=$major
+ # I'm not sure if I'm treating the release correctly. I think
+ # release should show up in the -l (ie -lgmp5) so we don't want to
+ # add it in twice. Is that correct?
+ release=""
+ versuffix=""
+ major=""
+ newdeplibs=
+ droppeddeps=no
+ case $deplibs_check_method in
+ pass_all)
+ # Don't check for shared/static. Everything works.
+ # This might be a little naive. We might want to check
+ # whether the library exists or not. But this is on
+ # osf3 & osf4 and I'm not really sure... Just
+ # implementing what was already the behavior.
+ newdeplibs=$deplibs
+ ;;
+ test_compile)
+ # This code stresses the "libraries are programs" paradigm to its
+ # limits. Maybe even breaks it. We compile a program, linking it
+ # against the deplibs as a proxy for the library. Then we can check
+ # whether they linked in statically or dynamically with ldd.
+ $opt_dry_run || $RM conftest.c
+ cat > conftest.c <<EOF
+ int main() { return 0; }
+EOF
+ $opt_dry_run || $RM conftest
+ if $LTCC $LTCFLAGS -o conftest conftest.c $deplibs; then
+ ldd_output=`ldd conftest`
+ for i in $deplibs; do
+ case $i in
+ -l*)
+ func_stripname -l '' "$i"
+ name=$func_stripname_result
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ case " $predeps $postdeps " in
+ *" $i "*)
+ newdeplibs="$newdeplibs $i"
+ i=""
+ ;;
+ esac
+ fi
+ if test -n "$i" ; then
+ libname=`eval "\\$ECHO \"$libname_spec\""`
+ deplib_matches=`eval "\\$ECHO \"$library_names_spec\""`
+ set dummy $deplib_matches; shift
+ deplib_match=$1
+ if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0 ; then
+ newdeplibs="$newdeplibs $i"
+ else
+ droppeddeps=yes
+ $ECHO
+ $ECHO "*** Warning: dynamic linker does not accept needed library $i."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which I believe you do not have"
+ $ECHO "*** because a test_compile did reveal that the linker did not use it for"
+ $ECHO "*** its dynamic dependency list that programs get resolved with at runtime."
+ fi
+ fi
+ ;;
+ *)
+ newdeplibs="$newdeplibs $i"
+ ;;
+ esac
+ done
+ else
+ # Error occurred in the first compile. Let's try to salvage
+ # the situation: Compile a separate program for each library.
+ for i in $deplibs; do
+ case $i in
+ -l*)
+ func_stripname -l '' "$i"
+ name=$func_stripname_result
+ $opt_dry_run || $RM conftest
+ if $LTCC $LTCFLAGS -o conftest conftest.c $i; then
+ ldd_output=`ldd conftest`
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ case " $predeps $postdeps " in
+ *" $i "*)
+ newdeplibs="$newdeplibs $i"
+ i=""
+ ;;
+ esac
+ fi
+ if test -n "$i" ; then
+ libname=`eval "\\$ECHO \"$libname_spec\""`
+ deplib_matches=`eval "\\$ECHO \"$library_names_spec\""`
+ set dummy $deplib_matches; shift
+ deplib_match=$1
+ if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0 ; then
+ newdeplibs="$newdeplibs $i"
+ else
+ droppeddeps=yes
+ $ECHO
+ $ECHO "*** Warning: dynamic linker does not accept needed library $i."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which you do not appear to have"
+ $ECHO "*** because a test_compile did reveal that the linker did not use this one"
+ $ECHO "*** as a dynamic dependency that programs can get resolved with at runtime."
+ fi
+ fi
+ else
+ droppeddeps=yes
+ $ECHO
+ $ECHO "*** Warning! Library $i is needed by this library but I was not able to"
+ $ECHO "*** make it link in! You will probably need to install it or some"
+ $ECHO "*** library that it depends on before this library will be fully"
+ $ECHO "*** functional. Installing it before continuing would be even better."
+ fi
+ ;;
+ *)
+ newdeplibs="$newdeplibs $i"
+ ;;
+ esac
+ done
+ fi
+ ;;
+ file_magic*)
+ set dummy $deplibs_check_method; shift
+ file_magic_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
+ for a_deplib in $deplibs; do
+ case $a_deplib in
+ -l*)
+ func_stripname -l '' "$a_deplib"
+ name=$func_stripname_result
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ case " $predeps $postdeps " in
+ *" $a_deplib "*)
+ newdeplibs="$newdeplibs $a_deplib"
+ a_deplib=""
+ ;;
+ esac
+ fi
+ if test -n "$a_deplib" ; then
+ libname=`eval "\\$ECHO \"$libname_spec\""`
+ for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do
+ potential_libs=`ls $i/$libname[.-]* 2>/dev/null`
+ for potent_lib in $potential_libs; do
+ # Follow soft links.
+ if ls -lLd "$potent_lib" 2>/dev/null |
+ $GREP " -> " >/dev/null; then
+ continue
+ fi
+ # The statement above tries to avoid entering an
+ # endless loop below, in case of cyclic links.
+ # We might still enter an endless loop, since a link
+ # loop can be closed while we follow links,
+ # but so what?
+ potlib="$potent_lib"
+ while test -h "$potlib" 2>/dev/null; do
+ potliblink=`ls -ld $potlib | ${SED} 's/.* -> //'`
+ case $potliblink in
+ [\\/]* | [A-Za-z]:[\\/]*) potlib="$potliblink";;
+ *) potlib=`$ECHO "X$potlib" | $Xsed -e 's,[^/]*$,,'`"$potliblink";;
+ esac
+ done
+ if eval $file_magic_cmd \"\$potlib\" 2>/dev/null |
+ $SED -e 10q |
+ $EGREP "$file_magic_regex" > /dev/null; then
+ newdeplibs="$newdeplibs $a_deplib"
+ a_deplib=""
+ break 2
+ fi
+ done
+ done
+ fi
+ if test -n "$a_deplib" ; then
+ droppeddeps=yes
+ $ECHO
+ $ECHO "*** Warning: linker path does not have real file for library $a_deplib."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which you do not appear to have"
+ $ECHO "*** because I did check the linker path looking for a file starting"
+ if test -z "$potlib" ; then
+ $ECHO "*** with $libname but no candidates were found. (...for file magic test)"
+ else
+ $ECHO "*** with $libname and none of the candidates passed a file format test"
+ $ECHO "*** using a file magic. Last file checked: $potlib"
+ fi
+ fi
+ ;;
+ *)
+ # Add a -L argument.
+ newdeplibs="$newdeplibs $a_deplib"
+ ;;
+ esac
+ done # Gone through all deplibs.
+ ;;
+ match_pattern*)
+ set dummy $deplibs_check_method; shift
+ match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
+ for a_deplib in $deplibs; do
+ case $a_deplib in
+ -l*)
+ func_stripname -l '' "$a_deplib"
+ name=$func_stripname_result
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ case " $predeps $postdeps " in
+ *" $a_deplib "*)
+ newdeplibs="$newdeplibs $a_deplib"
+ a_deplib=""
+ ;;
+ esac
+ fi
+ if test -n "$a_deplib" ; then
+ libname=`eval "\\$ECHO \"$libname_spec\""`
+ for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do
+ potential_libs=`ls $i/$libname[.-]* 2>/dev/null`
+ for potent_lib in $potential_libs; do
+ potlib="$potent_lib" # see symlink-check above in file_magic test
+ if eval "\$ECHO \"X$potent_lib\"" 2>/dev/null | $Xsed -e 10q | \
+ $EGREP "$match_pattern_regex" > /dev/null; then
+ newdeplibs="$newdeplibs $a_deplib"
+ a_deplib=""
+ break 2
+ fi
+ done
+ done
+ fi
+ if test -n "$a_deplib" ; then
+ droppeddeps=yes
+ $ECHO
+ $ECHO "*** Warning: linker path does not have real file for library $a_deplib."
+ $ECHO "*** I have the capability to make that library automatically link in when"
+ $ECHO "*** you link to this library. But I can only do this if you have a"
+ $ECHO "*** shared version of the library, which you do not appear to have"
+ $ECHO "*** because I did check the linker path looking for a file starting"
+ if test -z "$potlib" ; then
+ $ECHO "*** with $libname but no candidates were found. (...for regex pattern test)"
+ else
+ $ECHO "*** with $libname and none of the candidates passed a file format test"
+ $ECHO "*** using a regex pattern. Last file checked: $potlib"
+ fi
+ fi
+ ;;
+ *)
+ # Add a -L argument.
+ newdeplibs="$newdeplibs $a_deplib"
+ ;;
+ esac
+ done # Gone through all deplibs.
+ ;;
+ none | unknown | *)
+ newdeplibs=""
+ tmp_deplibs=`$ECHO "X $deplibs" | $Xsed \
+ -e 's/ -lc$//' -e 's/ -[LR][^ ]*//g'`
+ if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+ for i in $predeps $postdeps ; do
+ # can't use Xsed below, because $i might contain '/'
+ tmp_deplibs=`$ECHO "X $tmp_deplibs" | $Xsed -e "s,$i,,"`
+ done
+ fi
+ if $ECHO "X $tmp_deplibs" | $Xsed -e 's/[ ]//g' |
+ $GREP . >/dev/null; then
+ $ECHO
+ if test "X$deplibs_check_method" = "Xnone"; then
+ $ECHO "*** Warning: inter-library dependencies are not supported in this platform."
+ else
+ $ECHO "*** Warning: inter-library dependencies are not known to be supported."
+ fi
+ $ECHO "*** All declared inter-library dependencies are being dropped."
+ droppeddeps=yes
+ fi
+ ;;
+ esac
+ versuffix=$versuffix_save
+ major=$major_save
+ release=$release_save
+ libname=$libname_save
+ name=$name_save
+
+ case $host in
+ *-*-rhapsody* | *-*-darwin1.[012])
+ # On Rhapsody replace the C library with the System framework
+ newdeplibs=`$ECHO "X $newdeplibs" | $Xsed -e 's/ -lc / System.ltframework /'`
+ ;;
+ esac
+
+ if test "$droppeddeps" = yes; then
+ if test "$module" = yes; then
+ $ECHO
+ $ECHO "*** Warning: libtool could not satisfy all declared inter-library"
+ $ECHO "*** dependencies of module $libname. Therefore, libtool will create"
+ $ECHO "*** a static module, that should work as long as the dlopening"
+ $ECHO "*** application is linked with the -dlopen flag."
+ if test -z "$global_symbol_pipe"; then
+ $ECHO
+ $ECHO "*** However, this would only work if libtool was able to extract symbol"
+ $ECHO "*** lists from a program, using \`nm' or equivalent, but libtool could"
+ $ECHO "*** not find such a program. So, this module is probably useless."
+ $ECHO "*** \`nm' from GNU binutils and a full rebuild may help."
+ fi
+ if test "$build_old_libs" = no; then
+ oldlibs="$output_objdir/$libname.$libext"
+ build_libtool_libs=module
+ build_old_libs=yes
+ else
+ build_libtool_libs=no
+ fi
+ else
+ $ECHO "*** The inter-library dependencies that have been dropped here will be"
+ $ECHO "*** automatically added whenever a program is linked with this library"
+ $ECHO "*** or is declared to -dlopen it."
+
+ if test "$allow_undefined" = no; then
+ $ECHO
+ $ECHO "*** Since this library must not contain undefined symbols,"
+ $ECHO "*** because either the platform does not support them or"
+ $ECHO "*** it was explicitly requested with -no-undefined,"
+ $ECHO "*** libtool will only create a static version of it."
+ if test "$build_old_libs" = no; then
+ oldlibs="$output_objdir/$libname.$libext"
+ build_libtool_libs=module
+ build_old_libs=yes
+ else
+ build_libtool_libs=no
+ fi
+ fi
+ fi
+ fi
+ # Done checking deplibs!
+ deplibs=$newdeplibs
+ fi
+ # Time to change all our "foo.ltframework" stuff back to "-framework foo"
+ case $host in
+ *-*-darwin*)
+ newdeplibs=`$ECHO "X $newdeplibs" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ new_inherited_linker_flags=`$ECHO "X $new_inherited_linker_flags" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ deplibs=`$ECHO "X $deplibs" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ ;;
+ esac
+
+ # move library search paths that coincide with paths to not yet
+ # installed libraries to the beginning of the library search list
+ new_libs=
+ for path in $notinst_path; do
+ case " $new_libs " in
+ *" -L$path/$objdir "*) ;;
+ *)
+ case " $deplibs " in
+ *" -L$path/$objdir "*)
+ new_libs="$new_libs -L$path/$objdir" ;;
+ esac
+ ;;
+ esac
+ done
+ for deplib in $deplibs; do
+ case $deplib in
+ -L*)
+ case " $new_libs " in
+ *" $deplib "*) ;;
+ *) new_libs="$new_libs $deplib" ;;
+ esac
+ ;;
+ *) new_libs="$new_libs $deplib" ;;
+ esac
+ done
+ deplibs="$new_libs"
+
+ # All the library-specific variables (install_libdir is set above).
+ library_names=
+ old_library=
+ dlname=
+
+ # Test again, we may have decided not to build it any more
+ if test "$build_libtool_libs" = yes; then
+ if test "$hardcode_into_libs" = yes; then
+ # Hardcode the library paths
+ hardcode_libdirs=
+ dep_rpath=
+ rpath="$finalize_rpath"
+ test "$mode" != relink && rpath="$compile_rpath$rpath"
+ for libdir in $rpath; do
+ if test -n "$hardcode_libdir_flag_spec"; then
+ if test -n "$hardcode_libdir_separator"; then
+ if test -z "$hardcode_libdirs"; then
+ hardcode_libdirs="$libdir"
+ else
+ # Just accumulate the unique libdirs.
+ case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+ *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+ ;;
+ *)
+ hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+ ;;
+ esac
+ fi
+ else
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ dep_rpath="$dep_rpath $flag"
+ fi
+ elif test -n "$runpath_var"; then
+ case "$perm_rpath " in
+ *" $libdir "*) ;;
+ *) perm_rpath="$perm_rpath $libdir" ;;
+ esac
+ fi
+ done
+ # Substitute the hardcoded libdirs into the rpath.
+ if test -n "$hardcode_libdir_separator" &&
+ test -n "$hardcode_libdirs"; then
+ libdir="$hardcode_libdirs"
+ if test -n "$hardcode_libdir_flag_spec_ld"; then
+ eval dep_rpath=\"$hardcode_libdir_flag_spec_ld\"
+ else
+ eval dep_rpath=\"$hardcode_libdir_flag_spec\"
+ fi
+ fi
+ if test -n "$runpath_var" && test -n "$perm_rpath"; then
+ # We should set the runpath_var.
+ rpath=
+ for dir in $perm_rpath; do
+ rpath="$rpath$dir:"
+ done
+ eval "$runpath_var='$rpath\$$runpath_var'; export $runpath_var"
+ fi
+ test -n "$dep_rpath" && deplibs="$dep_rpath $deplibs"
+ fi
+
+ shlibpath="$finalize_shlibpath"
+ test "$mode" != relink && shlibpath="$compile_shlibpath$shlibpath"
+ if test -n "$shlibpath"; then
+ eval "$shlibpath_var='$shlibpath\$$shlibpath_var'; export $shlibpath_var"
+ fi
+
+ # Get the real and link names of the library.
+ eval shared_ext=\"$shrext_cmds\"
+ eval library_names=\"$library_names_spec\"
+ set dummy $library_names
+ shift
+ realname="$1"
+ shift
+
+ if test -n "$soname_spec"; then
+ eval soname=\"$soname_spec\"
+ else
+ soname="$realname"
+ fi
+ if test -z "$dlname"; then
+ dlname=$soname
+ fi
+
+ lib="$output_objdir/$realname"
+ linknames=
+ for link
+ do
+ linknames="$linknames $link"
+ done
+
+ # Use standard objects if they are pic
+ test -z "$pic_flag" && libobjs=`$ECHO "X$libobjs" | $SP2NL | $Xsed -e "$lo2o" | $NL2SP`
+ test "X$libobjs" = "X " && libobjs=
+
+ delfiles=
+ if test -n "$export_symbols" && test -n "$include_expsyms"; then
+ $opt_dry_run || cp "$export_symbols" "$output_objdir/$libname.uexp"
+ export_symbols="$output_objdir/$libname.uexp"
+ delfiles="$delfiles $export_symbols"
+ fi
+
+ orig_export_symbols=
+ case $host_os in
+ cygwin* | mingw* | cegcc*)
+ if test -n "$export_symbols" && test -z "$export_symbols_regex"; then
+ # exporting using user supplied symfile
+ if test "x`$SED 1q $export_symbols`" != xEXPORTS; then
+ # and it's NOT already a .def file. Must figure out
+ # which of the given symbols are data symbols and tag
+ # them as such. So, trigger use of export_symbols_cmds.
+ # export_symbols gets reassigned inside the "prepare
+ # the list of exported symbols" if statement, so the
+ # include_expsyms logic still works.
+ orig_export_symbols="$export_symbols"
+ export_symbols=
+ always_export_symbols=yes
+ fi
+ fi
+ ;;
+ esac
+
+ # Prepare the list of exported symbols
+ if test -z "$export_symbols"; then
+ if test "$always_export_symbols" = yes || test -n "$export_symbols_regex"; then
+ func_verbose "generating symbol list for \`$libname.la'"
+ export_symbols="$output_objdir/$libname.exp"
+ $opt_dry_run || $RM $export_symbols
+ cmds=$export_symbols_cmds
+ save_ifs="$IFS"; IFS='~'
+ for cmd in $cmds; do
+ IFS="$save_ifs"
+ eval cmd=\"$cmd\"
+ func_len " $cmd"
+ len=$func_len_result
+ if test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+ func_show_eval "$cmd" 'exit $?'
+ skipped_export=false
+ else
+ # The command line is too long to execute in one step.
+ func_verbose "using reloadable object file for export list..."
+ skipped_export=:
+ # Break out early, otherwise skipped_export may be
+ # set to false by a later but shorter cmd.
+ break
+ fi
+ done
+ IFS="$save_ifs"
+ if test -n "$export_symbols_regex" && test "X$skipped_export" != "X:"; then
+ func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"'
+ func_show_eval '$MV "${export_symbols}T" "$export_symbols"'
+ fi
+ fi
+ fi
+
+ if test -n "$export_symbols" && test -n "$include_expsyms"; then
+ tmp_export_symbols="$export_symbols"
+ test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols"
+ $opt_dry_run || eval '$ECHO "X$include_expsyms" | $Xsed | $SP2NL >> "$tmp_export_symbols"'
+ fi
+
+ if test "X$skipped_export" != "X:" && test -n "$orig_export_symbols"; then
+ # The given exports_symbols file has to be filtered, so filter it.
+ func_verbose "filter symbol list for \`$libname.la' to tag DATA exports"
+ # FIXME: $output_objdir/$libname.filter potentially contains lots of
+ # 's' commands which not all seds can handle. GNU sed should be fine
+ # though. Also, the filter scales superlinearly with the number of
+ # global variables. join(1) would be nice here, but unfortunately
+ # isn't a blessed tool.
+ $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
+ delfiles="$delfiles $export_symbols $output_objdir/$libname.filter"
+ export_symbols=$output_objdir/$libname.def
+ $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
+ fi
+
+ tmp_deplibs=
+ for test_deplib in $deplibs; do
+ case " $convenience " in
+ *" $test_deplib "*) ;;
+ *)
+ tmp_deplibs="$tmp_deplibs $test_deplib"
+ ;;
+ esac
+ done
+ deplibs="$tmp_deplibs"
+
+ if test -n "$convenience"; then
+ if test -n "$whole_archive_flag_spec" &&
+ test "$compiler_needs_object" = yes &&
+ test -z "$libobjs"; then
+ # extract the archives, so we have objects to list.
+ # TODO: could optimize this to just extract one archive.
+ whole_archive_flag_spec=
+ fi
+ if test -n "$whole_archive_flag_spec"; then
+ save_libobjs=$libobjs
+ eval libobjs=\"\$libobjs $whole_archive_flag_spec\"
+ test "X$libobjs" = "X " && libobjs=
+ else
+ gentop="$output_objdir/${outputname}x"
+ generated="$generated $gentop"
+
+ func_extract_archives $gentop $convenience
+ libobjs="$libobjs $func_extract_archives_result"
+ test "X$libobjs" = "X " && libobjs=
+ fi
+ fi
+
+ if test "$thread_safe" = yes && test -n "$thread_safe_flag_spec"; then
+ eval flag=\"$thread_safe_flag_spec\"
+ linker_flags="$linker_flags $flag"
+ fi
+
+ # Make a backup of the uninstalled library when relinking
+ if test "$mode" = relink; then
+ $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}U && $MV $realname ${realname}U)' || exit $?
+ fi
+
+ # Do each of the archive commands.
+ if test "$module" = yes && test -n "$module_cmds" ; then
+ if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then
+ eval test_cmds=\"$module_expsym_cmds\"
+ cmds=$module_expsym_cmds
+ else
+ eval test_cmds=\"$module_cmds\"
+ cmds=$module_cmds
+ fi
+ else
+ if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then
+ eval test_cmds=\"$archive_expsym_cmds\"
+ cmds=$archive_expsym_cmds
+ else
+ eval test_cmds=\"$archive_cmds\"
+ cmds=$archive_cmds
+ fi
+ fi
+
+ if test "X$skipped_export" != "X:" &&
+ func_len " $test_cmds" &&
+ len=$func_len_result &&
+ test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+ :
+ else
+ # The command line is too long to link in one step, link piecewise
+ # or, if using GNU ld and skipped_export is not :, use a linker
+ # script.
+
+ # Save the value of $output and $libobjs because we want to
+ # use them later. If we have whole_archive_flag_spec, we
+ # want to use save_libobjs as it was before
+ # whole_archive_flag_spec was expanded, because we can't
+ # assume the linker understands whole_archive_flag_spec.
+ # This may have to be revisited, in case too many
+ # convenience libraries get linked in and end up exceeding
+ # the spec.
+ if test -z "$convenience" || test -z "$whole_archive_flag_spec"; then
+ save_libobjs=$libobjs
+ fi
+ save_output=$output
+ output_la=`$ECHO "X$output" | $Xsed -e "$basename"`
+
+ # Clear the reloadable object creation command queue and
+ # initialize k to one.
+ test_cmds=
+ concat_cmds=
+ objlist=
+ last_robj=
+ k=1
+
+ if test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "$with_gnu_ld" = yes; then
+ output=${output_objdir}/${output_la}.lnkscript
+ func_verbose "creating GNU ld script: $output"
+ $ECHO 'INPUT (' > $output
+ for obj in $save_libobjs
+ do
+ $ECHO "$obj" >> $output
+ done
+ $ECHO ')' >> $output
+ delfiles="$delfiles $output"
+ elif test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "X$file_list_spec" != X; then
+ output=${output_objdir}/${output_la}.lnk
+ func_verbose "creating linker input file list: $output"
+ : > $output
+ set x $save_libobjs
+ shift
+ firstobj=
+ if test "$compiler_needs_object" = yes; then
+ firstobj="$1 "
+ shift
+ fi
+ for obj
+ do
+ $ECHO "$obj" >> $output
+ done
+ delfiles="$delfiles $output"
+ output=$firstobj\"$file_list_spec$output\"
+ else
+ if test -n "$save_libobjs"; then
+ func_verbose "creating reloadable object files..."
+ output=$output_objdir/$output_la-${k}.$objext
+ eval test_cmds=\"$reload_cmds\"
+ func_len " $test_cmds"
+ len0=$func_len_result
+ len=$len0
+
+ # Loop over the list of objects to be linked.
+ for obj in $save_libobjs
+ do
+ func_len " $obj"
+ func_arith $len + $func_len_result
+ len=$func_arith_result
+ if test "X$objlist" = X ||
+ test "$len" -lt "$max_cmd_len"; then
+ func_append objlist " $obj"
+ else
+ # The command $test_cmds is almost too long, add a
+ # command to the queue.
+ if test "$k" -eq 1 ; then
+ # The first file doesn't have a previous command to add.
+ eval concat_cmds=\"$reload_cmds $objlist $last_robj\"
+ else
+ # All subsequent reloadable object files will link in
+ # the last one created.
+ eval concat_cmds=\"\$concat_cmds~$reload_cmds $objlist $last_robj~\$RM $last_robj\"
+ fi
+ last_robj=$output_objdir/$output_la-${k}.$objext
+ func_arith $k + 1
+ k=$func_arith_result
+ output=$output_objdir/$output_la-${k}.$objext
+ objlist=$obj
+ func_len " $last_robj"
+ func_arith $len0 + $func_len_result
+ len=$func_arith_result
+ fi
+ done
+ # Handle the remaining objects by creating one last
+ # reloadable object file. All subsequent reloadable object
+ # files will link in the last one created.
+ test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+ eval concat_cmds=\"\${concat_cmds}$reload_cmds $objlist $last_robj\"
+ if test -n "$last_robj"; then
+ eval concat_cmds=\"\${concat_cmds}~\$RM $last_robj\"
+ fi
+ delfiles="$delfiles $output"
+
+ else
+ output=
+ fi
+
+ if ${skipped_export-false}; then
+ func_verbose "generating symbol list for \`$libname.la'"
+ export_symbols="$output_objdir/$libname.exp"
+ $opt_dry_run || $RM $export_symbols
+ libobjs=$output
+ # Append the command to create the export file.
+ test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+ eval concat_cmds=\"\$concat_cmds$export_symbols_cmds\"
+ if test -n "$last_robj"; then
+ eval concat_cmds=\"\$concat_cmds~\$RM $last_robj\"
+ fi
+ fi
+
+ test -n "$save_libobjs" &&
+ func_verbose "creating a temporary reloadable object file: $output"
+
+ # Loop through the commands generated above and execute them.
+ save_ifs="$IFS"; IFS='~'
+ for cmd in $concat_cmds; do
+ IFS="$save_ifs"
+ $opt_silent || {
+ func_quote_for_expand "$cmd"
+ eval "func_echo $func_quote_for_expand_result"
+ }
+ $opt_dry_run || eval "$cmd" || {
+ lt_exit=$?
+
+ # Restore the uninstalled library and exit
+ if test "$mode" = relink; then
+ ( cd "$output_objdir" && \
+ $RM "${realname}T" && \
+ $MV "${realname}U" "$realname" )
+ fi
+
+ exit $lt_exit
+ }
+ done
+ IFS="$save_ifs"
+
+ if test -n "$export_symbols_regex" && ${skipped_export-false}; then
+ func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"'
+ func_show_eval '$MV "${export_symbols}T" "$export_symbols"'
+ fi
+ fi
+
+ if ${skipped_export-false}; then
+ if test -n "$export_symbols" && test -n "$include_expsyms"; then
+ tmp_export_symbols="$export_symbols"
+ test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols"
+ $opt_dry_run || eval '$ECHO "X$include_expsyms" | $Xsed | $SP2NL >> "$tmp_export_symbols"'
+ fi
+
+ if test -n "$orig_export_symbols"; then
+ # The given exports_symbols file has to be filtered, so filter it.
+ func_verbose "filter symbol list for \`$libname.la' to tag DATA exports"
+ # FIXME: $output_objdir/$libname.filter potentially contains lots of
+ # 's' commands which not all seds can handle. GNU sed should be fine
+ # though. Also, the filter scales superlinearly with the number of
+ # global variables. join(1) would be nice here, but unfortunately
+ # isn't a blessed tool.
+ $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
+ delfiles="$delfiles $export_symbols $output_objdir/$libname.filter"
+ export_symbols=$output_objdir/$libname.def
+ $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
+ fi
+ fi
+
+ libobjs=$output
+ # Restore the value of output.
+ output=$save_output
+
+ if test -n "$convenience" && test -n "$whole_archive_flag_spec"; then
+ eval libobjs=\"\$libobjs $whole_archive_flag_spec\"
+ test "X$libobjs" = "X " && libobjs=
+ fi
+ # Expand the library linking commands again to reset the
+ # value of $libobjs for piecewise linking.
+
+ # Do each of the archive commands.
+ if test "$module" = yes && test -n "$module_cmds" ; then
+ if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then
+ cmds=$module_expsym_cmds
+ else
+ cmds=$module_cmds
+ fi
+ else
+ if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then
+ cmds=$archive_expsym_cmds
+ else
+ cmds=$archive_cmds
+ fi
+ fi
+ fi
+
+ if test -n "$delfiles"; then
+ # Append the command to remove temporary files to $cmds.
+ eval cmds=\"\$cmds~\$RM $delfiles\"
+ fi
+
+ # Add any objects from preloaded convenience libraries
+ if test -n "$dlprefiles"; then
+ gentop="$output_objdir/${outputname}x"
+ generated="$generated $gentop"
+
+ func_extract_archives $gentop $dlprefiles
+ libobjs="$libobjs $func_extract_archives_result"
+ test "X$libobjs" = "X " && libobjs=
+ fi
+
+ save_ifs="$IFS"; IFS='~'
+ for cmd in $cmds; do
+ IFS="$save_ifs"
+ eval cmd=\"$cmd\"
+ $opt_silent || {
+ func_quote_for_expand "$cmd"
+ eval "func_echo $func_quote_for_expand_result"
+ }
+ $opt_dry_run || eval "$cmd" || {
+ lt_exit=$?
+
+ # Restore the uninstalled library and exit
+ if test "$mode" = relink; then
+ ( cd "$output_objdir" && \
+ $RM "${realname}T" && \
+ $MV "${realname}U" "$realname" )
+ fi
+
+ exit $lt_exit
+ }
+ done
+ IFS="$save_ifs"
+
+ # Restore the uninstalled library and exit
+ if test "$mode" = relink; then
+ $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}T && $MV $realname ${realname}T && $MV ${realname}U $realname)' || exit $?
+
+ if test -n "$convenience"; then
+ if test -z "$whole_archive_flag_spec"; then
+ func_show_eval '${RM}r "$gentop"'
+ fi
+ fi
+
+ exit $EXIT_SUCCESS
+ fi
+
+ # Create links to the real library.
+ for linkname in $linknames; do
+ if test "$realname" != "$linkname"; then
+ func_show_eval '(cd "$output_objdir" && $RM "$linkname" && $LN_S "$realname" "$linkname")' 'exit $?'
+ fi
+ done
+
+ # If -module or -export-dynamic was specified, set the dlname.
+ if test "$module" = yes || test "$export_dynamic" = yes; then
+ # On all known operating systems, these are identical.
+ dlname="$soname"
+ fi
+ fi
+ ;;
+
+ obj)
+ if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+ func_warning "\`-dlopen' is ignored for objects"
+ fi
+
+ case " $deplibs" in
+ *\ -l* | *\ -L*)
+ func_warning "\`-l' and \`-L' are ignored for objects" ;;
+ esac
+
+ test -n "$rpath" && \
+ func_warning "\`-rpath' is ignored for objects"
+
+ test -n "$xrpath" && \
+ func_warning "\`-R' is ignored for objects"
+
+ test -n "$vinfo" && \
+ func_warning "\`-version-info' is ignored for objects"
+
+ test -n "$release" && \
+ func_warning "\`-release' is ignored for objects"
+
+ case $output in
+ *.lo)
+ test -n "$objs$old_deplibs" && \
+ func_fatal_error "cannot build library object \`$output' from non-libtool objects"
+
+ libobj=$output
+ func_lo2o "$libobj"
+ obj=$func_lo2o_result
+ ;;
+ *)
+ libobj=
+ obj="$output"
+ ;;
+ esac
+
+ # Delete the old objects.
+ $opt_dry_run || $RM $obj $libobj
+
+ # Objects from convenience libraries. This assumes
+ # single-version convenience libraries. Whenever we create
+ # different ones for PIC/non-PIC, this we'll have to duplicate
+ # the extraction.
+ reload_conv_objs=
+ gentop=
+ # reload_cmds runs $LD directly, so let us get rid of
+ # -Wl from whole_archive_flag_spec and hope we can get by with
+ # turning comma into space..
+ wl=
+
+ if test -n "$convenience"; then
+ if test -n "$whole_archive_flag_spec"; then
+ eval tmp_whole_archive_flags=\"$whole_archive_flag_spec\"
+ reload_conv_objs=$reload_objs\ `$ECHO "X$tmp_whole_archive_flags" | $Xsed -e 's|,| |g'`
+ else
+ gentop="$output_objdir/${obj}x"
+ generated="$generated $gentop"
+
+ func_extract_archives $gentop $convenience
+ reload_conv_objs="$reload_objs $func_extract_archives_result"
+ fi
+ fi
+
+ # Create the old-style object.
+ reload_objs="$objs$old_deplibs "`$ECHO "X$libobjs" | $SP2NL | $Xsed -e '/\.'${libext}$'/d' -e '/\.lib$/d' -e "$lo2o" | $NL2SP`" $reload_conv_objs" ### testsuite: skip nested quoting test
+
+ output="$obj"
+ func_execute_cmds "$reload_cmds" 'exit $?'
+
+ # Exit if we aren't doing a library object file.
+ if test -z "$libobj"; then
+ if test -n "$gentop"; then
+ func_show_eval '${RM}r "$gentop"'
+ fi
+
+ exit $EXIT_SUCCESS
+ fi
+
+ if test "$build_libtool_libs" != yes; then
+ if test -n "$gentop"; then
+ func_show_eval '${RM}r "$gentop"'
+ fi
+
+ # Create an invalid libtool object if no PIC, so that we don't
+ # accidentally link it into a program.
+ # $show "echo timestamp > $libobj"
+ # $opt_dry_run || eval "echo timestamp > $libobj" || exit $?
+ exit $EXIT_SUCCESS
+ fi
+
+ if test -n "$pic_flag" || test "$pic_mode" != default; then
+ # Only do commands if we really have different PIC objects.
+ reload_objs="$libobjs $reload_conv_objs"
+ output="$libobj"
+ func_execute_cmds "$reload_cmds" 'exit $?'
+ fi
+
+ if test -n "$gentop"; then
+ func_show_eval '${RM}r "$gentop"'
+ fi
+
+ exit $EXIT_SUCCESS
+ ;;
+
+ prog)
+ case $host in
+ *cygwin*) func_stripname '' '.exe' "$output"
+ output=$func_stripname_result.exe;;
+ esac
+ test -n "$vinfo" && \
+ func_warning "\`-version-info' is ignored for programs"
+
+ test -n "$release" && \
+ func_warning "\`-release' is ignored for programs"
+
+ test "$preload" = yes \
+ && test "$dlopen_support" = unknown \
+ && test "$dlopen_self" = unknown \
+ && test "$dlopen_self_static" = unknown && \
+ func_warning "\`LT_INIT([dlopen])' not used. Assuming no dlopen support."
+
+ case $host in
+ *-*-rhapsody* | *-*-darwin1.[012])
+ # On Rhapsody replace the C library is the System framework
+ compile_deplibs=`$ECHO "X $compile_deplibs" | $Xsed -e 's/ -lc / System.ltframework /'`
+ finalize_deplibs=`$ECHO "X $finalize_deplibs" | $Xsed -e 's/ -lc / System.ltframework /'`
+ ;;
+ esac
+
+ case $host in
+ *-*-darwin*)
+ # Don't allow lazy linking, it breaks C++ global constructors
+ # But is supposedly fixed on 10.4 or later (yay!).
+ if test "$tagname" = CXX ; then
+ case ${MACOSX_DEPLOYMENT_TARGET-10.0} in
+ 10.[0123])
+ compile_command="$compile_command ${wl}-bind_at_load"
+ finalize_command="$finalize_command ${wl}-bind_at_load"
+ ;;
+ esac
+ fi
+ # Time to change all our "foo.ltframework" stuff back to "-framework foo"
+ compile_deplibs=`$ECHO "X $compile_deplibs" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ finalize_deplibs=`$ECHO "X $finalize_deplibs" | $Xsed -e 's% \([^ $]*\).ltframework% -framework \1%g'`
+ ;;
+ esac
+
+
+ # move library search paths that coincide with paths to not yet
+ # installed libraries to the beginning of the library search list
+ new_libs=
+ for path in $notinst_path; do
+ case " $new_libs " in
+ *" -L$path/$objdir "*) ;;
+ *)
+ case " $compile_deplibs " in
+ *" -L$path/$objdir "*)
+ new_libs="$new_libs -L$path/$objdir" ;;
+ esac
+ ;;
+ esac
+ done
+ for deplib in $compile_deplibs; do
+ case $deplib in
+ -L*)
+ case " $new_libs " in
+ *" $deplib "*) ;;
+ *) new_libs="$new_libs $deplib" ;;
+ esac
+ ;;
+ *) new_libs="$new_libs $deplib" ;;
+ esac
+ done
+ compile_deplibs="$new_libs"
+
+
+ compile_command="$compile_command $compile_deplibs"
+ finalize_command="$finalize_command $finalize_deplibs"
+
+ if test -n "$rpath$xrpath"; then
+ # If the user specified any rpath flags, then add them.
+ for libdir in $rpath $xrpath; do
+ # This is the magic to use -rpath.
+ case "$finalize_rpath " in
+ *" $libdir "*) ;;
+ *) finalize_rpath="$finalize_rpath $libdir" ;;
+ esac
+ done
+ fi
+
+ # Now hardcode the library paths
+ rpath=
+ hardcode_libdirs=
+ for libdir in $compile_rpath $finalize_rpath; do
+ if test -n "$hardcode_libdir_flag_spec"; then
+ if test -n "$hardcode_libdir_separator"; then
+ if test -z "$hardcode_libdirs"; then
+ hardcode_libdirs="$libdir"
+ else
+ # Just accumulate the unique libdirs.
+ case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+ *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+ ;;
+ *)
+ hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+ ;;
+ esac
+ fi
+ else
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ rpath="$rpath $flag"
+ fi
+ elif test -n "$runpath_var"; then
+ case "$perm_rpath " in
+ *" $libdir "*) ;;
+ *) perm_rpath="$perm_rpath $libdir" ;;
+ esac
+ fi
+ case $host in
+ *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+ testbindir=`${ECHO} "$libdir" | ${SED} -e 's*/lib$*/bin*'`
+ case :$dllsearchpath: in
+ *":$libdir:"*) ;;
+ ::) dllsearchpath=$libdir;;
+ *) dllsearchpath="$dllsearchpath:$libdir";;
+ esac
+ case :$dllsearchpath: in
+ *":$testbindir:"*) ;;
+ ::) dllsearchpath=$testbindir;;
+ *) dllsearchpath="$dllsearchpath:$testbindir";;
+ esac
+ ;;
+ esac
+ done
+ # Substitute the hardcoded libdirs into the rpath.
+ if test -n "$hardcode_libdir_separator" &&
+ test -n "$hardcode_libdirs"; then
+ libdir="$hardcode_libdirs"
+ eval rpath=\" $hardcode_libdir_flag_spec\"
+ fi
+ compile_rpath="$rpath"
+
+ rpath=
+ hardcode_libdirs=
+ for libdir in $finalize_rpath; do
+ if test -n "$hardcode_libdir_flag_spec"; then
+ if test -n "$hardcode_libdir_separator"; then
+ if test -z "$hardcode_libdirs"; then
+ hardcode_libdirs="$libdir"
+ else
+ # Just accumulate the unique libdirs.
+ case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+ *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+ ;;
+ *)
+ hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+ ;;
+ esac
+ fi
+ else
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ rpath="$rpath $flag"
+ fi
+ elif test -n "$runpath_var"; then
+ case "$finalize_perm_rpath " in
+ *" $libdir "*) ;;
+ *) finalize_perm_rpath="$finalize_perm_rpath $libdir" ;;
+ esac
+ fi
+ done
+ # Substitute the hardcoded libdirs into the rpath.
+ if test -n "$hardcode_libdir_separator" &&
+ test -n "$hardcode_libdirs"; then
+ libdir="$hardcode_libdirs"
+ eval rpath=\" $hardcode_libdir_flag_spec\"
+ fi
+ finalize_rpath="$rpath"
+
+ if test -n "$libobjs" && test "$build_old_libs" = yes; then
+ # Transform all the library objects into standard objects.
+ compile_command=`$ECHO "X$compile_command" | $SP2NL | $Xsed -e "$lo2o" | $NL2SP`
+ finalize_command=`$ECHO "X$finalize_command" | $SP2NL | $Xsed -e "$lo2o" | $NL2SP`
+ fi
+
+ func_generate_dlsyms "$outputname" "@PROGRAM@" "no"
+
+ # template prelinking step
+ if test -n "$prelink_cmds"; then
+ func_execute_cmds "$prelink_cmds" 'exit $?'
+ fi
+
+ wrappers_required=yes
+ case $host in
+ *cygwin* | *mingw* )
+ if test "$build_libtool_libs" != yes; then
+ wrappers_required=no
+ fi
+ ;;
+ *cegcc)
+ # Disable wrappers for cegcc, we are cross compiling anyway.
+ wrappers_required=no
+ ;;
+ *)
+ if test "$need_relink" = no || test "$build_libtool_libs" != yes; then
+ wrappers_required=no
+ fi
+ ;;
+ esac
+ if test "$wrappers_required" = no; then
+ # Replace the output file specification.
+ compile_command=`$ECHO "X$compile_command" | $Xsed -e 's%@OUTPUT@%'"$output"'%g'`
+ link_command="$compile_command$compile_rpath"
+
+ # We have no uninstalled library dependencies, so finalize right now.
+ exit_status=0
+ func_show_eval "$link_command" 'exit_status=$?'
+
+ # Delete the generated files.
+ if test -f "$output_objdir/${outputname}S.${objext}"; then
+ func_show_eval '$RM "$output_objdir/${outputname}S.${objext}"'
+ fi
+
+ exit $exit_status
+ fi
+
+ if test -n "$compile_shlibpath$finalize_shlibpath"; then
+ compile_command="$shlibpath_var=\"$compile_shlibpath$finalize_shlibpath\$$shlibpath_var\" $compile_command"
+ fi
+ if test -n "$finalize_shlibpath"; then
+ finalize_command="$shlibpath_var=\"$finalize_shlibpath\$$shlibpath_var\" $finalize_command"
+ fi
+
+ compile_var=
+ finalize_var=
+ if test -n "$runpath_var"; then
+ if test -n "$perm_rpath"; then
+ # We should set the runpath_var.
+ rpath=
+ for dir in $perm_rpath; do
+ rpath="$rpath$dir:"
+ done
+ compile_var="$runpath_var=\"$rpath\$$runpath_var\" "
+ fi
+ if test -n "$finalize_perm_rpath"; then
+ # We should set the runpath_var.
+ rpath=
+ for dir in $finalize_perm_rpath; do
+ rpath="$rpath$dir:"
+ done
+ finalize_var="$runpath_var=\"$rpath\$$runpath_var\" "
+ fi
+ fi
+
+ if test "$no_install" = yes; then
+ # We don't need to create a wrapper script.
+ link_command="$compile_var$compile_command$compile_rpath"
+ # Replace the output file specification.
+ link_command=`$ECHO "X$link_command" | $Xsed -e 's%@OUTPUT@%'"$output"'%g'`
+ # Delete the old output file.
+ $opt_dry_run || $RM $output
+ # Link the executable and exit
+ func_show_eval "$link_command" 'exit $?'
+ exit $EXIT_SUCCESS
+ fi
+
+ if test "$hardcode_action" = relink; then
+ # Fast installation is not supported
+ link_command="$compile_var$compile_command$compile_rpath"
+ relink_command="$finalize_var$finalize_command$finalize_rpath"
+
+ func_warning "this platform does not like uninstalled shared libraries"
+ func_warning "\`$output' will be relinked during installation"
+ else
+ if test "$fast_install" != no; then
+ link_command="$finalize_var$compile_command$finalize_rpath"
+ if test "$fast_install" = yes; then
+ relink_command=`$ECHO "X$compile_var$compile_command$compile_rpath" | $Xsed -e 's%@OUTPUT@%\$progdir/\$file%g'`
+ else
+ # fast_install is set to needless
+ relink_command=
+ fi
+ else
+ link_command="$compile_var$compile_command$compile_rpath"
+ relink_command="$finalize_var$finalize_command$finalize_rpath"
+ fi
+ fi
+
+ # Replace the output file specification.
+ link_command=`$ECHO "X$link_command" | $Xsed -e 's%@OUTPUT@%'"$output_objdir/$outputname"'%g'`
+
+ # Delete the old output files.
+ $opt_dry_run || $RM $output $output_objdir/$outputname $output_objdir/lt-$outputname
+
+ func_show_eval "$link_command" 'exit $?'
+
+ # Now create the wrapper script.
+ func_verbose "creating $output"
+
+ # Quote the relink command for shipping.
+ if test -n "$relink_command"; then
+ # Preserve any variables that may affect compiler behavior
+ for var in $variables_saved_for_relink; do
+ if eval test -z \"\${$var+set}\"; then
+ relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command"
+ elif eval var_value=\$$var; test -z "$var_value"; then
+ relink_command="$var=; export $var; $relink_command"
+ else
+ func_quote_for_eval "$var_value"
+ relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
+ fi
+ done
+ relink_command="(cd `pwd`; $relink_command)"
+ relink_command=`$ECHO "X$relink_command" | $Xsed -e "$sed_quote_subst"`
+ fi
+
+ # Quote $ECHO for shipping.
+ if test "X$ECHO" = "X$SHELL $progpath --fallback-echo"; then
+ case $progpath in
+ [\\/]* | [A-Za-z]:[\\/]*) qecho="$SHELL $progpath --fallback-echo";;
+ *) qecho="$SHELL `pwd`/$progpath --fallback-echo";;
+ esac
+ qecho=`$ECHO "X$qecho" | $Xsed -e "$sed_quote_subst"`
+ else
+ qecho=`$ECHO "X$ECHO" | $Xsed -e "$sed_quote_subst"`
+ fi
+
+ # Only actually do things if not in dry run mode.
+ $opt_dry_run || {
+ # win32 will think the script is a binary if it has
+ # a .exe suffix, so we strip it off here.
+ case $output in
+ *.exe) func_stripname '' '.exe' "$output"
+ output=$func_stripname_result ;;
+ esac
+ # test for cygwin because mv fails w/o .exe extensions
+ case $host in
+ *cygwin*)
+ exeext=.exe
+ func_stripname '' '.exe' "$outputname"
+ outputname=$func_stripname_result ;;
+ *) exeext= ;;
+ esac
+ case $host in
+ *cygwin* | *mingw* )
+ func_dirname_and_basename "$output" "" "."
+ output_name=$func_basename_result
+ output_path=$func_dirname_result
+ cwrappersource="$output_path/$objdir/lt-$output_name.c"
+ cwrapper="$output_path/$output_name.exe"
+ $RM $cwrappersource $cwrapper
+ trap "$RM $cwrappersource $cwrapper; exit $EXIT_FAILURE" 1 2 15
+
+ func_emit_cwrapperexe_src > $cwrappersource
+
+ # The wrapper executable is built using the $host compiler,
+ # because it contains $host paths and files. If cross-
+ # compiling, it, like the target executable, must be
+ # executed on the $host or under an emulation environment.
+ $opt_dry_run || {
+ $LTCC $LTCFLAGS -o $cwrapper $cwrappersource
+ $STRIP $cwrapper
+ }
+
+ # Now, create the wrapper script for func_source use:
+ func_ltwrapper_scriptname $cwrapper
+ $RM $func_ltwrapper_scriptname_result
+ trap "$RM $func_ltwrapper_scriptname_result; exit $EXIT_FAILURE" 1 2 15
+ $opt_dry_run || {
+ # note: this script will not be executed, so do not chmod.
+ if test "x$build" = "x$host" ; then
+ $cwrapper --lt-dump-script > $func_ltwrapper_scriptname_result
+ else
+ func_emit_wrapper no > $func_ltwrapper_scriptname_result
+ fi
+ }
+ ;;
+ * )
+ $RM $output
+ trap "$RM $output; exit $EXIT_FAILURE" 1 2 15
+
+ func_emit_wrapper no > $output
+ chmod +x $output
+ ;;
+ esac
+ }
+ exit $EXIT_SUCCESS
+ ;;
+ esac
+
+ # See if we need to build an old-fashioned archive.
+ for oldlib in $oldlibs; do
+
+ if test "$build_libtool_libs" = convenience; then
+ oldobjs="$libobjs_save $symfileobj"
+ addlibs="$convenience"
+ build_libtool_libs=no
+ else
+ if test "$build_libtool_libs" = module; then
+ oldobjs="$libobjs_save"
+ build_libtool_libs=no
+ else
+ oldobjs="$old_deplibs $non_pic_objects"
+ if test "$preload" = yes && test -f "$symfileobj"; then
+ oldobjs="$oldobjs $symfileobj"
+ fi
+ fi
+ addlibs="$old_convenience"
+ fi
+
+ if test -n "$addlibs"; then
+ gentop="$output_objdir/${outputname}x"
+ generated="$generated $gentop"
+
+ func_extract_archives $gentop $addlibs
+ oldobjs="$oldobjs $func_extract_archives_result"
+ fi
+
+ # Do each command in the archive commands.
+ if test -n "$old_archive_from_new_cmds" && test "$build_libtool_libs" = yes; then
+ cmds=$old_archive_from_new_cmds
+ else
+
+ # Add any objects from preloaded convenience libraries
+ if test -n "$dlprefiles"; then
+ gentop="$output_objdir/${outputname}x"
+ generated="$generated $gentop"
+
+ func_extract_archives $gentop $dlprefiles
+ oldobjs="$oldobjs $func_extract_archives_result"
+ fi
+
+ # POSIX demands no paths to be encoded in archives. We have
+ # to avoid creating archives with duplicate basenames if we
+ # might have to extract them afterwards, e.g., when creating a
+ # static archive out of a convenience library, or when linking
+ # the entirety of a libtool archive into another (currently
+ # not supported by libtool).
+ if (for obj in $oldobjs
+ do
+ func_basename "$obj"
+ $ECHO "$func_basename_result"
+ done | sort | sort -uc >/dev/null 2>&1); then
+ :
+ else
+ $ECHO "copying selected object files to avoid basename conflicts..."
+ gentop="$output_objdir/${outputname}x"
+ generated="$generated $gentop"
+ func_mkdir_p "$gentop"
+ save_oldobjs=$oldobjs
+ oldobjs=
+ counter=1
+ for obj in $save_oldobjs
+ do
+ func_basename "$obj"
+ objbase="$func_basename_result"
+ case " $oldobjs " in
+ " ") oldobjs=$obj ;;
+ *[\ /]"$objbase "*)
+ while :; do
+ # Make sure we don't pick an alternate name that also
+ # overlaps.
+ newobj=lt$counter-$objbase
+ func_arith $counter + 1
+ counter=$func_arith_result
+ case " $oldobjs " in
+ *[\ /]"$newobj "*) ;;
+ *) if test ! -f "$gentop/$newobj"; then break; fi ;;
+ esac
+ done
+ func_show_eval "ln $obj $gentop/$newobj || cp $obj $gentop/$newobj"
+ oldobjs="$oldobjs $gentop/$newobj"
+ ;;
+ *) oldobjs="$oldobjs $obj" ;;
+ esac
+ done
+ fi
+ eval cmds=\"$old_archive_cmds\"
+
+ func_len " $cmds"
+ len=$func_len_result
+ if test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+ cmds=$old_archive_cmds
+ else
+ # the command line is too long to link in one step, link in parts
+ func_verbose "using piecewise archive linking..."
+ save_RANLIB=$RANLIB
+ RANLIB=:
+ objlist=
+ concat_cmds=
+ save_oldobjs=$oldobjs
+ oldobjs=
+ # Is there a better way of finding the last object in the list?
+ for obj in $save_oldobjs
+ do
+ last_oldobj=$obj
+ done
+ eval test_cmds=\"$old_archive_cmds\"
+ func_len " $test_cmds"
+ len0=$func_len_result
+ len=$len0
+ for obj in $save_oldobjs
+ do
+ func_len " $obj"
+ func_arith $len + $func_len_result
+ len=$func_arith_result
+ func_append objlist " $obj"
+ if test "$len" -lt "$max_cmd_len"; then
+ :
+ else
+ # the above command should be used before it gets too long
+ oldobjs=$objlist
+ if test "$obj" = "$last_oldobj" ; then
+ RANLIB=$save_RANLIB
+ fi
+ test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+ eval concat_cmds=\"\${concat_cmds}$old_archive_cmds\"
+ objlist=
+ len=$len0
+ fi
+ done
+ RANLIB=$save_RANLIB
+ oldobjs=$objlist
+ if test "X$oldobjs" = "X" ; then
+ eval cmds=\"\$concat_cmds\"
+ else
+ eval cmds=\"\$concat_cmds~\$old_archive_cmds\"
+ fi
+ fi
+ fi
+ func_execute_cmds "$cmds" 'exit $?'
+ done
+
+ test -n "$generated" && \
+ func_show_eval "${RM}r$generated"
+
+ # Now create the libtool archive.
+ case $output in
+ *.la)
+ old_library=
+ test "$build_old_libs" = yes && old_library="$libname.$libext"
+ func_verbose "creating $output"
+
+ # Preserve any variables that may affect compiler behavior
+ for var in $variables_saved_for_relink; do
+ if eval test -z \"\${$var+set}\"; then
+ relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command"
+ elif eval var_value=\$$var; test -z "$var_value"; then
+ relink_command="$var=; export $var; $relink_command"
+ else
+ func_quote_for_eval "$var_value"
+ relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
+ fi
+ done
+ # Quote the link command for shipping.
+ relink_command="(cd `pwd`; $SHELL $progpath $preserve_args --mode=relink $libtool_args @inst_prefix_dir@)"
+ relink_command=`$ECHO "X$relink_command" | $Xsed -e "$sed_quote_subst"`
+ if test "$hardcode_automatic" = yes ; then
+ relink_command=
+ fi
+
+ # Only create the output if not a dry run.
+ $opt_dry_run || {
+ for installed in no yes; do
+ if test "$installed" = yes; then
+ if test -z "$install_libdir"; then
+ break
+ fi
+ output="$output_objdir/$outputname"i
+ # Replace all uninstalled libtool libraries with the installed ones
+ newdependency_libs=
+ for deplib in $dependency_libs; do
+ case $deplib in
+ *.la)
+ func_basename "$deplib"
+ name="$func_basename_result"
+ eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
+ test -z "$libdir" && \
+ func_fatal_error "\`$deplib' is not a valid libtool archive"
+ newdependency_libs="$newdependency_libs $libdir/$name"
+ ;;
+ *) newdependency_libs="$newdependency_libs $deplib" ;;
+ esac
+ done
+ dependency_libs="$newdependency_libs"
+ newdlfiles=
+
+ for lib in $dlfiles; do
+ case $lib in
+ *.la)
+ func_basename "$lib"
+ name="$func_basename_result"
+ eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
+ test -z "$libdir" && \
+ func_fatal_error "\`$lib' is not a valid libtool archive"
+ newdlfiles="$newdlfiles $libdir/$name"
+ ;;
+ *) newdlfiles="$newdlfiles $lib" ;;
+ esac
+ done
+ dlfiles="$newdlfiles"
+ newdlprefiles=
+ for lib in $dlprefiles; do
+ case $lib in
+ *.la)
+ # Only pass preopened files to the pseudo-archive (for
+ # eventual linking with the app. that links it) if we
+ # didn't already link the preopened objects directly into
+ # the library:
+ func_basename "$lib"
+ name="$func_basename_result"
+ eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
+ test -z "$libdir" && \
+ func_fatal_error "\`$lib' is not a valid libtool archive"
+ newdlprefiles="$newdlprefiles $libdir/$name"
+ ;;
+ esac
+ done
+ dlprefiles="$newdlprefiles"
+ else
+ newdlfiles=
+ for lib in $dlfiles; do
+ case $lib in
+ [\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
+ *) abs=`pwd`"/$lib" ;;
+ esac
+ newdlfiles="$newdlfiles $abs"
+ done
+ dlfiles="$newdlfiles"
+ newdlprefiles=
+ for lib in $dlprefiles; do
+ case $lib in
+ [\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
+ *) abs=`pwd`"/$lib" ;;
+ esac
+ newdlprefiles="$newdlprefiles $abs"
+ done
+ dlprefiles="$newdlprefiles"
+ fi
+ $RM $output
+ # place dlname in correct position for cygwin
+ tdlname=$dlname
+ case $host,$output,$installed,$module,$dlname in
+ *cygwin*,*lai,yes,no,*.dll | *mingw*,*lai,yes,no,*.dll | *cegcc*,*lai,yes,no,*.dll) tdlname=../bin/$dlname ;;
+ esac
+ $ECHO > $output "\
+# $outputname - a libtool library file
+# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname='$tdlname'
+
+# Names of this library.
+library_names='$library_names'
+
+# The name of the static archive.
+old_library='$old_library'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags='$new_inherited_linker_flags'
+
+# Libraries that this one depends upon.
+dependency_libs='$dependency_libs'
+
+# Names of additional weak libraries provided by this library
+weak_library_names='$weak_libs'
+
+# Version information for $libname.
+current=$current
+age=$age
+revision=$revision
+
+# Is this an already installed library?
+installed=$installed
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=$module
+
+# Files to dlopen/dlpreopen
+dlopen='$dlfiles'
+dlpreopen='$dlprefiles'
+
+# Directory that this library needs to be installed in:
+libdir='$install_libdir'"
+ if test "$installed" = no && test "$need_relink" = yes; then
+ $ECHO >> $output "\
+relink_command=\"$relink_command\""
+ fi
+ done
+ }
+
+ # Do a symbolic link so that the libtool archive can be found in
+ # LD_LIBRARY_PATH before the program is installed.
+ func_show_eval '( cd "$output_objdir" && $RM "$outputname" && $LN_S "../$outputname" "$outputname" )' 'exit $?'
+ ;;
+ esac
+ exit $EXIT_SUCCESS
+}
+
+{ test "$mode" = link || test "$mode" = relink; } &&
+ func_mode_link ${1+"$@"}
+
+
+# func_mode_uninstall arg...
+func_mode_uninstall ()
+{
+ $opt_debug
+ RM="$nonopt"
+ files=
+ rmforce=
+ exit_status=0
+
+ # This variable tells wrapper scripts just to set variables rather
+ # than running their programs.
+ libtool_install_magic="$magic"
+
+ for arg
+ do
+ case $arg in
+ -f) RM="$RM $arg"; rmforce=yes ;;
+ -*) RM="$RM $arg" ;;
+ *) files="$files $arg" ;;
+ esac
+ done
+
+ test -z "$RM" && \
+ func_fatal_help "you must specify an RM program"
+
+ rmdirs=
+
+ origobjdir="$objdir"
+ for file in $files; do
+ func_dirname "$file" "" "."
+ dir="$func_dirname_result"
+ if test "X$dir" = X.; then
+ objdir="$origobjdir"
+ else
+ objdir="$dir/$origobjdir"
+ fi
+ func_basename "$file"
+ name="$func_basename_result"
+ test "$mode" = uninstall && objdir="$dir"
+
+ # Remember objdir for removal later, being careful to avoid duplicates
+ if test "$mode" = clean; then
+ case " $rmdirs " in
+ *" $objdir "*) ;;
+ *) rmdirs="$rmdirs $objdir" ;;
+ esac
+ fi
+
+ # Don't error if the file doesn't exist and rm -f was used.
+ if { test -L "$file"; } >/dev/null 2>&1 ||
+ { test -h "$file"; } >/dev/null 2>&1 ||
+ test -f "$file"; then
+ :
+ elif test -d "$file"; then
+ exit_status=1
+ continue
+ elif test "$rmforce" = yes; then
+ continue
+ fi
+
+ rmfiles="$file"
+
+ case $name in
+ *.la)
+ # Possibly a libtool archive, so verify it.
+ if func_lalib_p "$file"; then
+ func_source $dir/$name
+
+ # Delete the libtool libraries and symlinks.
+ for n in $library_names; do
+ rmfiles="$rmfiles $objdir/$n"
+ done
+ test -n "$old_library" && rmfiles="$rmfiles $objdir/$old_library"
+
+ case "$mode" in
+ clean)
+ case " $library_names " in
+ # " " in the beginning catches empty $dlname
+ *" $dlname "*) ;;
+ *) rmfiles="$rmfiles $objdir/$dlname" ;;
+ esac
+ test -n "$libdir" && rmfiles="$rmfiles $objdir/$name $objdir/${name}i"
+ ;;
+ uninstall)
+ if test -n "$library_names"; then
+ # Do each command in the postuninstall commands.
+ func_execute_cmds "$postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1'
+ fi
+
+ if test -n "$old_library"; then
+ # Do each command in the old_postuninstall commands.
+ func_execute_cmds "$old_postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1'
+ fi
+ # FIXME: should reinstall the best remaining shared library.
+ ;;
+ esac
+ fi
+ ;;
+
+ *.lo)
+ # Possibly a libtool object, so verify it.
+ if func_lalib_p "$file"; then
+
+ # Read the .lo file
+ func_source $dir/$name
+
+ # Add PIC object to the list of files to remove.
+ if test -n "$pic_object" &&
+ test "$pic_object" != none; then
+ rmfiles="$rmfiles $dir/$pic_object"
+ fi
+
+ # Add non-PIC object to the list of files to remove.
+ if test -n "$non_pic_object" &&
+ test "$non_pic_object" != none; then
+ rmfiles="$rmfiles $dir/$non_pic_object"
+ fi
+ fi
+ ;;
+
+ *)
+ if test "$mode" = clean ; then
+ noexename=$name
+ case $file in
+ *.exe)
+ func_stripname '' '.exe' "$file"
+ file=$func_stripname_result
+ func_stripname '' '.exe' "$name"
+ noexename=$func_stripname_result
+ # $file with .exe has already been added to rmfiles,
+ # add $file without .exe
+ rmfiles="$rmfiles $file"
+ ;;
+ esac
+ # Do a test to see if this is a libtool program.
+ if func_ltwrapper_p "$file"; then
+ if func_ltwrapper_executable_p "$file"; then
+ func_ltwrapper_scriptname "$file"
+ relink_command=
+ func_source $func_ltwrapper_scriptname_result
+ rmfiles="$rmfiles $func_ltwrapper_scriptname_result"
+ else
+ relink_command=
+ func_source $dir/$noexename
+ fi
+
+ # note $name still contains .exe if it was in $file originally
+ # as does the version of $file that was added into $rmfiles
+ rmfiles="$rmfiles $objdir/$name $objdir/${name}S.${objext}"
+ if test "$fast_install" = yes && test -n "$relink_command"; then
+ rmfiles="$rmfiles $objdir/lt-$name"
+ fi
+ if test "X$noexename" != "X$name" ; then
+ rmfiles="$rmfiles $objdir/lt-${noexename}.c"
+ fi
+ fi
+ fi
+ ;;
+ esac
+ func_show_eval "$RM $rmfiles" 'exit_status=1'
+ done
+ objdir="$origobjdir"
+
+ # Try to remove the ${objdir}s in the directories where we deleted files
+ for dir in $rmdirs; do
+ if test -d "$dir"; then
+ func_show_eval "rmdir $dir >/dev/null 2>&1"
+ fi
+ done
+
+ exit $exit_status
+}
+
+{ test "$mode" = uninstall || test "$mode" = clean; } &&
+ func_mode_uninstall ${1+"$@"}
+
+test -z "$mode" && {
+ help="$generic_help"
+ func_fatal_help "you must specify a MODE"
+}
+
+test -z "$exec_cmd" && \
+ func_fatal_help "invalid operation mode \`$mode'"
+
+if test -n "$exec_cmd"; then
+ eval exec "$exec_cmd"
+ exit $EXIT_FAILURE
+fi
+
+exit $exit_status
+
+
+# The TAGs below are defined such that we never get into a situation
+# in which we disable both kinds of libraries. Given conflicting
+# choices, we go for a static library, that is the most portable,
+# since we can't tell whether shared libraries were disabled because
+# the user asked for that or because the platform doesn't support
+# them. This is particularly important on AIX, because we don't
+# support having both static and shared libraries enabled at the same
+# time on that platform, so we default to a shared-only configuration.
+# If a disable-shared tag is given, we'll fallback to a static-only
+# configuration. But we'll never go from static-only to shared-only.
+
+# ### BEGIN LIBTOOL TAG CONFIG: disable-shared
+build_libtool_libs=no
+build_old_libs=yes
+# ### END LIBTOOL TAG CONFIG: disable-shared
+
+# ### BEGIN LIBTOOL TAG CONFIG: disable-static
+build_old_libs=`case $build_libtool_libs in yes) echo no;; *) echo yes;; esac`
+# ### END LIBTOOL TAG CONFIG: disable-static
+
+# Local Variables:
+# mode:shell-script
+# sh-indentation:2
+# End:
+# vi:sw=2
+
--- /dev/null
+#! /bin/sh
+# Common stub for a few missing GNU programs while installing.
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
+# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+if test $# -eq 0; then
+ echo 1>&2 "Try \`$0 --help' for more information"
+ exit 1
+fi
+
+run=:
+
+# In the cases where this matters, `missing' is being run in the
+# srcdir already.
+if test -f configure.ac; then
+ configure_ac=configure.ac
+else
+ configure_ac=configure.in
+fi
+
+case "$1" in
+--run)
+ # Try to run requested program, and just exit if it succeeds.
+ run=
+ shift
+ "$@" && exit 0
+ ;;
+esac
+
+# If it does not exist, or fails to run (possibly an outdated version),
+# try to emulate it.
+case "$1" in
+
+ -h|--h|--he|--hel|--help)
+ echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
+error status if there is no known handling for PROGRAM.
+
+Options:
+ -h, --help display this help and exit
+ -v, --version output version information and exit
+ --run try to run the given command, and emulate it if it fails
+
+Supported PROGRAM values:
+ aclocal touch file \`aclocal.m4'
+ autoconf touch file \`configure'
+ autoheader touch file \`config.h.in'
+ automake touch all \`Makefile.in' files
+ bison create \`y.tab.[ch]', if possible, from existing .[ch]
+ flex create \`lex.yy.c', if possible, from existing .c
+ help2man touch the output file
+ lex create \`lex.yy.c', if possible, from existing .c
+ makeinfo touch the output file
+ tar try tar, gnutar, gtar, then tar without non-portable flags
+ yacc create \`y.tab.[ch]', if possible, from existing .[ch]"
+ ;;
+
+ -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+ echo "missing 0.4 - GNU automake"
+ ;;
+
+ -*)
+ echo 1>&2 "$0: Unknown \`$1' option"
+ echo 1>&2 "Try \`$0 --help' for more information"
+ exit 1
+ ;;
+
+ aclocal*)
+ if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+ # We have it, but it failed.
+ exit 1
+ fi
+
+ echo 1>&2 "\
+WARNING: \`$1' is missing on your system. You should only need it if
+ you modified \`acinclude.m4' or \`${configure_ac}'. You might want
+ to install the \`Automake' and \`Perl' packages. Grab them from
+ any GNU archive site."
+ touch aclocal.m4
+ ;;
+
+ autoconf)
+ if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+ # We have it, but it failed.
+ exit 1
+ fi
+
+ echo 1>&2 "\
+WARNING: \`$1' is missing on your system. You should only need it if
+ you modified \`${configure_ac}'. You might want to install the
+ \`Autoconf' and \`GNU m4' packages. Grab them from any GNU
+ archive site."
+ touch configure
+ ;;
+
+ autoheader)
+ if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+ # We have it, but it failed.
+ exit 1
+ fi
+
+ echo 1>&2 "\
+WARNING: \`$1' is missing on your system. You should only need it if
+ you modified \`acconfig.h' or \`${configure_ac}'. You might want
+ to install the \`Autoconf' and \`GNU m4' packages. Grab them
+ from any GNU archive site."
+ files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
+ test -z "$files" && files="config.h"
+ touch_files=
+ for f in $files; do
+ case "$f" in
+ *:*) touch_files="$touch_files "`echo "$f" |
+ sed -e 's/^[^:]*://' -e 's/:.*//'`;;
+ *) touch_files="$touch_files $f.in";;
+ esac
+ done
+ touch $touch_files
+ ;;
+
+ automake*)
+ if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+ # We have it, but it failed.
+ exit 1
+ fi
+
+ echo 1>&2 "\
+WARNING: \`$1' is missing on your system. You should only need it if
+ you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
+ You might want to install the \`Automake' and \`Perl' packages.
+ Grab them from any GNU archive site."
+ find . -type f -name Makefile.am -print |
+ sed 's/\.am$/.in/' |
+ while read f; do touch "$f"; done
+ ;;
+
+ autom4te)
+ if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+ # We have it, but it failed.
+ exit 1
+ fi
+
+ echo 1>&2 "\
+WARNING: \`$1' is needed, and you do not seem to have it handy on your
+ system. You might have modified some files without having the
+ proper tools for further handling them.
+ You can get \`$1' as part of \`Autoconf' from any GNU
+ archive site."
+
+ file=`echo "$*" | sed -n 's/.*--output[ =]*\([^ ]*\).*/\1/p'`
+ test -z "$file" && file=`echo "$*" | sed -n 's/.*-o[ ]*\([^ ]*\).*/\1/p'`
+ if test -f "$file"; then
+ touch $file
+ else
+ test -z "$file" || exec >$file
+ echo "#! /bin/sh"
+ echo "# Created by GNU Automake missing as a replacement of"
+ echo "# $ $@"
+ echo "exit 0"
+ chmod +x $file
+ exit 1
+ fi
+ ;;
+
+ bison|yacc)
+ echo 1>&2 "\
+WARNING: \`$1' is missing on your system. You should only need it if
+ you modified a \`.y' file. You may need the \`Bison' package
+ in order for those modifications to take effect. You can get
+ \`Bison' from any GNU archive site."
+ rm -f y.tab.c y.tab.h
+ if [ $# -ne 1 ]; then
+ eval LASTARG="\${$#}"
+ case "$LASTARG" in
+ *.y)
+ SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
+ if [ -f "$SRCFILE" ]; then
+ cp "$SRCFILE" y.tab.c
+ fi
+ SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
+ if [ -f "$SRCFILE" ]; then
+ cp "$SRCFILE" y.tab.h
+ fi
+ ;;
+ esac
+ fi
+ if [ ! -f y.tab.h ]; then
+ echo >y.tab.h
+ fi
+ if [ ! -f y.tab.c ]; then
+ echo 'main() { return 0; }' >y.tab.c
+ fi
+ ;;
+
+ lex|flex)
+ echo 1>&2 "\
+WARNING: \`$1' is missing on your system. You should only need it if
+ you modified a \`.l' file. You may need the \`Flex' package
+ in order for those modifications to take effect. You can get
+ \`Flex' from any GNU archive site."
+ rm -f lex.yy.c
+ if [ $# -ne 1 ]; then
+ eval LASTARG="\${$#}"
+ case "$LASTARG" in
+ *.l)
+ SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
+ if [ -f "$SRCFILE" ]; then
+ cp "$SRCFILE" lex.yy.c
+ fi
+ ;;
+ esac
+ fi
+ if [ ! -f lex.yy.c ]; then
+ echo 'main() { return 0; }' >lex.yy.c
+ fi
+ ;;
+
+ help2man)
+ if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+ # We have it, but it failed.
+ exit 1
+ fi
+
+ echo 1>&2 "\
+WARNING: \`$1' is missing on your system. You should only need it if
+ you modified a dependency of a manual page. You may need the
+ \`Help2man' package in order for those modifications to take
+ effect. You can get \`Help2man' from any GNU archive site."
+
+ file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
+ if test -z "$file"; then
+ file=`echo "$*" | sed -n 's/.*--output=\([^ ]*\).*/\1/p'`
+ fi
+ if [ -f "$file" ]; then
+ touch $file
+ else
+ test -z "$file" || exec >$file
+ echo ".ab help2man is required to generate this page"
+ exit 1
+ fi
+ ;;
+
+ makeinfo)
+ if test -z "$run" && (makeinfo --version) > /dev/null 2>&1; then
+ # We have makeinfo, but it failed.
+ exit 1
+ fi
+
+ echo 1>&2 "\
+WARNING: \`$1' is missing on your system. You should only need it if
+ you modified a \`.texi' or \`.texinfo' file, or any other file
+ indirectly affecting the aspect of the manual. The spurious
+ call might also be the consequence of using a buggy \`make' (AIX,
+ DU, IRIX). You might want to install the \`Texinfo' package or
+ the \`GNU make' package. Grab either from any GNU archive site."
+ file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
+ if test -z "$file"; then
+ file=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
+ file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $file`
+ fi
+ touch $file
+ ;;
+
+ tar)
+ shift
+ if test -n "$run"; then
+ echo 1>&2 "ERROR: \`tar' requires --run"
+ exit 1
+ fi
+
+ # We have already tried tar in the generic part.
+ # Look for gnutar/gtar before invocation to avoid ugly error
+ # messages.
+ if (gnutar --version > /dev/null 2>&1); then
+ gnutar "$@" && exit 0
+ fi
+ if (gtar --version > /dev/null 2>&1); then
+ gtar "$@" && exit 0
+ fi
+ firstarg="$1"
+ if shift; then
+ case "$firstarg" in
+ *o*)
+ firstarg=`echo "$firstarg" | sed s/o//`
+ tar "$firstarg" "$@" && exit 0
+ ;;
+ esac
+ case "$firstarg" in
+ *h*)
+ firstarg=`echo "$firstarg" | sed s/h//`
+ tar "$firstarg" "$@" && exit 0
+ ;;
+ esac
+ fi
+
+ echo 1>&2 "\
+WARNING: I can't seem to be able to run \`tar' with the given arguments.
+ You may want to install GNU tar or Free paxutils, or check the
+ command line arguments."
+ exit 1
+ ;;
+
+ *)
+ echo 1>&2 "\
+WARNING: \`$1' is needed, and you do not seem to have it handy on your
+ system. You might have modified some files without having the
+ proper tools for further handling them. Check the \`README' file,
+ it often tells you about the needed prerequisites for installing
+ this package. You may also peek at any GNU archive site, in case
+ some other package would contain this missing \`$1' program."
+ exit 1
+ ;;
+esac
+
+exit 0
--- /dev/null
+#! /bin/sh
+# mkinstalldirs --- make directory hierarchy
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1993-05-16
+# Public domain
+
+errstatus=0
+dirmode=""
+
+usage="\
+Usage: mkinstalldirs [-h] [--help] [-m mode] dir ..."
+
+# process command line arguments
+while test $# -gt 0 ; do
+ case $1 in
+ -h | --help | --h*) # -h for help
+ echo "$usage" 1>&2
+ exit 0
+ ;;
+ -m) # -m PERM arg
+ shift
+ test $# -eq 0 && { echo "$usage" 1>&2; exit 1; }
+ dirmode=$1
+ shift
+ ;;
+ --) # stop option processing
+ shift
+ break
+ ;;
+ -*) # unknown option
+ echo "$usage" 1>&2
+ exit 1
+ ;;
+ *) # first non-opt arg
+ break
+ ;;
+ esac
+done
+
+for file
+do
+ if test -d "$file"; then
+ shift
+ else
+ break
+ fi
+done
+
+case $# in
+ 0) exit 0 ;;
+esac
+
+case $dirmode in
+ '')
+ if mkdir -p -- . 2>/dev/null; then
+ echo "mkdir -p -- $*"
+ exec mkdir -p -- "$@"
+ fi
+ ;;
+ *)
+ if mkdir -m "$dirmode" -p -- . 2>/dev/null; then
+ echo "mkdir -m $dirmode -p -- $*"
+ exec mkdir -m "$dirmode" -p -- "$@"
+ fi
+ ;;
+esac
+
+for file
+do
+ set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`
+ shift
+
+ pathcomp=
+ for d
+ do
+ pathcomp="$pathcomp$d"
+ case $pathcomp in
+ -*) pathcomp=./$pathcomp ;;
+ esac
+
+ if test ! -d "$pathcomp"; then
+ echo "mkdir $pathcomp"
+
+ mkdir "$pathcomp" || lasterr=$?
+
+ if test ! -d "$pathcomp"; then
+ errstatus=$lasterr
+ else
+ if test ! -z "$dirmode"; then
+ echo "chmod $dirmode $pathcomp"
+ lasterr=""
+ chmod "$dirmode" "$pathcomp" || lasterr=$?
+
+ if test ! -z "$lasterr"; then
+ errstatus=$lasterr
+ fi
+ fi
+ fi
+ fi
+
+ pathcomp="$pathcomp/"
+ done
+done
+
+exit $errstatus
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# End:
+# mkinstalldirs ends here
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "uv-common.h"
+
+#include <assert.h>
+#include <stddef.h> /* NULL */
+#include <string.h> /* memset */
+
+/* use inet_pton from c-ares if necessary */
+#include "ares_config.h"
+#include "ares/inet_net_pton.h"
+
+/* list used for ares task handles */
+static uv_ares_task_t* uv_ares_handles_ = NULL;
+
+
+static uv_counters_t counters;
+
+
+uv_counters_t* uv_counters() {
+ return &counters;
+}
+
+
+const char* uv_err_name(uv_err_t err) {
+ switch (err.code) {
+ case UV_UNKNOWN: return "UNKNOWN";
+ case UV_OK: return "OK";
+ case UV_EOF: return "EOF";
+ case UV_EACCESS: return "EACCESS";
+ case UV_EAGAIN: return "EAGAIN";
+ case UV_EADDRINUSE: return "EADDRINUSE";
+ case UV_EADDRNOTAVAIL: return "EADDRNOTAVAIL";
+ case UV_EAFNOSUPPORT: return "EAFNOSUPPORT";
+ case UV_EALREADY: return "EALREADY";
+ case UV_EBADF: return "EBADF";
+ case UV_EBUSY: return "EBUSY";
+ case UV_ECONNABORTED: return "ECONNABORTED";
+ case UV_ECONNREFUSED: return "ECONNREFUSED";
+ case UV_ECONNRESET: return "ECONNRESET";
+ case UV_EDESTADDRREQ: return "EDESTADDRREQ";
+ case UV_EFAULT: return "EFAULT";
+ case UV_EHOSTUNREACH: return "EHOSTUNREACH";
+ case UV_EINTR: return "EINTR";
+ case UV_EINVAL: return "EINVAL";
+ case UV_EISCONN: return "EISCONN";
+ case UV_EMFILE: return "EMFILE";
+ case UV_ENETDOWN: return "ENETDOWN";
+ case UV_ENETUNREACH: return "ENETUNREACH";
+ case UV_ENFILE: return "ENFILE";
+ case UV_ENOBUFS: return "ENOBUFS";
+ case UV_ENOMEM: return "ENOMEM";
+ case UV_ENONET: return "ENONET";
+ case UV_ENOPROTOOPT: return "ENOPROTOOPT";
+ case UV_ENOTCONN: return "ENOTCONN";
+ case UV_ENOTSOCK: return "ENOTSOCK";
+ case UV_ENOTSUP: return "ENOTSUP";
+ case UV_EPROTO: return "EPROTO";
+ case UV_EPROTONOSUPPORT: return "EPROTONOSUPPORT";
+ case UV_EPROTOTYPE: return "EPROTOTYPE";
+ case UV_ETIMEDOUT: return "ETIMEDOUT";
+ default:
+ assert(0);
+ return NULL;
+ }
+}
+
+
+struct sockaddr_in uv_ip4_addr(const char* ip, int port) {
+ struct sockaddr_in addr;
+
+ memset(&addr, 0, sizeof(struct sockaddr_in));
+
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(port);
+ addr.sin_addr.s_addr = inet_addr(ip);
+
+ return addr;
+}
+
+
+struct sockaddr_in6 uv_ip6_addr(const char* ip, int port) {
+ struct sockaddr_in6 addr;
+
+ memset(&addr, 0, sizeof(struct sockaddr_in6));
+
+ addr.sin6_family = AF_INET6;
+ addr.sin6_port = htons(port);
+ ares_inet_pton(AF_INET6, ip, &addr.sin6_addr);
+
+ return addr;
+}
+
+
+/* find matching ares handle in list */
+void uv_add_ares_handle(uv_ares_task_t* handle) {
+ handle->ares_next = uv_ares_handles_;
+ handle->ares_prev = NULL;
+
+ if (uv_ares_handles_) {
+ uv_ares_handles_->ares_prev = handle;
+ }
+ uv_ares_handles_ = handle;
+}
+
+/* find matching ares handle in list */
+/* TODO: faster lookup */
+uv_ares_task_t* uv_find_ares_handle(ares_socket_t sock) {
+ uv_ares_task_t* handle = uv_ares_handles_;
+ while (handle != NULL) {
+ if (handle->sock == sock) {
+ break;
+ }
+ handle = handle->ares_next;
+ }
+
+ return handle;
+}
+
+/* remove ares handle in list */
+void uv_remove_ares_handle(uv_ares_task_t* handle) {
+ if (handle == uv_ares_handles_) {
+ uv_ares_handles_ = handle->ares_next;
+ }
+
+ if (handle->ares_next) {
+ handle->ares_next->ares_prev = handle->ares_prev;
+ }
+
+ if (handle->ares_prev) {
+ handle->ares_prev->ares_next = handle->ares_next;
+ }
+}
+
+
+/* Returns 1 if the uv_ares_handles_ list is empty. 0 otherwise. */
+int uv_ares_handles_empty() {
+ return uv_ares_handles_ ? 0 : 1;
+}
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+/*
+ * This file is private to libuv. It provides common functionality to both
+ * Windows and Unix backends.
+ */
+
+#ifndef UV_COMMON_H_
+#define UV_COMMON_H_
+
+#include "uv.h"
+
+/*
+ * Subclass of uv_handle_t. Used for integration of c-ares.
+ */
+typedef struct uv_ares_task_s uv_ares_task_t;
+
+struct uv_ares_task_s {
+ UV_HANDLE_FIELDS
+ UV_ARES_TASK_PRIVATE_FIELDS
+ uv_ares_task_t* ares_prev;
+ uv_ares_task_t* ares_next;
+};
+
+
+void uv_remove_ares_handle(uv_ares_task_t* handle);
+uv_ares_task_t* uv_find_ares_handle(ares_socket_t sock);
+void uv_add_ares_handle(uv_ares_task_t* handle);
+int uv_ares_handles_empty();
+
+
+#endif /* UV_COMMON_H_ */
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+
+#include <stdint.h>
+#include <stddef.h>
+#include <time.h>
+
+#undef NANOSEC
+#define NANOSEC 1000000000
+
+
+uint64_t uv_hrtime() {
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ return (ts.tv_sec * NANOSEC + ts.tv_nsec);
+}
+
+
+int uv_exepath(char* buffer, size_t* size) {
+ uint32_t usize;
+ int result;
+ char* path;
+ char* fullpath;
+
+ if (!buffer || !size) {
+ return -1;
+ }
+
+ *size = readlink("/proc/self/exe", buffer, *size - 1);
+ if (*size <= 0) return -1;
+ buffer[*size] = '\0';
+ return 0;
+}
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+
+#include <stdint.h>
+#include <CoreServices/CoreServices.h>
+#include <mach/mach.h>
+#include <mach/mach_time.h>
+
+
+uint64_t uv_hrtime() {
+ uint64_t time;
+ Nanoseconds enano;
+ time = mach_absolute_time();
+ enano = AbsoluteToNanoseconds(*(AbsoluteTime *)&time);
+ return (*(uint64_t *)&enano);
+}
+
+
+int uv_exepath(char* buffer, size_t* size) {
+ uint32_t usize;
+ int result;
+ char* path;
+ char* fullpath;
+
+ if (!buffer || !size) {
+ return -1;
+ }
+
+ usize = *size;
+ result = _NSGetExecutablePath(buffer, &usize);
+ if (result) return result;
+
+ path = (char*)malloc(2 * PATH_MAX);
+ fullpath = realpath(buffer, path);
+
+ if (fullpath == NULL) {
+ free(path);
+ return -1;
+ }
+
+ strncpy(buffer, fullpath, *size);
+ free(fullpath);
+ *size = strlen(buffer);
+ return 0;
+}
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+/* This file integrates the libuv event loop with the libeio thread pool */
+
+#include "uv.h"
+#include "eio.h"
+#include <assert.h>
+
+
+static uv_async_t uv_eio_want_poll_notifier;
+static uv_async_t uv_eio_done_poll_notifier;
+static uv_idle_t uv_eio_poller;
+static int uv_eio_init_count;
+
+
+static void uv_eio_do_poll(uv_idle_t* watcher, int status) {
+ assert(watcher == &uv_eio_poller);
+
+ /* printf("uv_eio_poller\n"); */
+
+ if (eio_poll() != -1 && uv_is_active((uv_handle_t*) &uv_eio_poller)) {
+ /* printf("uv_eio_poller stop\n"); */
+ uv_idle_stop(&uv_eio_poller);
+ uv_unref();
+ }
+}
+
+
+/* Called from the main thread. */
+static void uv_eio_want_poll_notifier_cb(uv_async_t* watcher, int status) {
+ assert(watcher == &uv_eio_want_poll_notifier);
+
+ /* printf("want poll notifier\n"); */
+
+ if (eio_poll() == -1 && !uv_is_active((uv_handle_t*) &uv_eio_poller)) {
+ /* printf("uv_eio_poller start\n"); */
+ uv_idle_start(&uv_eio_poller, uv_eio_do_poll);
+ uv_ref();
+ }
+}
+
+
+static void uv_eio_done_poll_notifier_cb(uv_async_t* watcher, int revents) {
+ assert(watcher == &uv_eio_done_poll_notifier);
+
+ /* printf("done poll notifier\n"); */
+
+ if (eio_poll() != -1 && uv_is_active((uv_handle_t*) &uv_eio_poller)) {
+ /* printf("uv_eio_poller stop\n"); */
+ uv_idle_stop(&uv_eio_poller);
+ uv_unref();
+ }
+}
+
+
+/*
+ * uv_eio_want_poll() is called from the EIO thread pool each time an EIO
+ * request (that is, one of the node.fs.* functions) has completed.
+ */
+static void uv_eio_want_poll(void) {
+ /* Signal the main thread that eio_poll need to be processed. */
+ uv_async_send(&uv_eio_want_poll_notifier);
+}
+
+
+static void uv_eio_done_poll(void) {
+ /*
+ * Signal the main thread that we should stop calling eio_poll().
+ * from the idle watcher.
+ */
+ uv_async_send(&uv_eio_done_poll_notifier);
+}
+
+
+void uv_eio_init() {
+ if (uv_eio_init_count == 0) {
+ uv_eio_init_count++;
+
+ uv_idle_init(&uv_eio_poller);
+ uv_idle_start(&uv_eio_poller, uv_eio_do_poll);
+
+ uv_async_init(&uv_eio_want_poll_notifier, uv_eio_want_poll_notifier_cb);
+ uv_unref();
+
+ uv_async_init(&uv_eio_done_poll_notifier, uv_eio_done_poll_notifier_cb);
+ uv_unref();
+
+ eio_init(uv_eio_want_poll, uv_eio_done_poll);
+ /*
+ * Don't handle more than 10 reqs on each eio_poll(). This is to avoid
+ * race conditions. See Node's test/simple/test-eio-race.js
+ */
+ eio_set_max_poll_reqs(10);
+ }
+}
--- /dev/null
+/* This header is private to libuv */
+#ifndef UV_EIO_H_
+#define UV_EIO_H_
+
+#include "eio.h"
+
+/*
+ * Call this function to integrate libeio into the libuv event loop. It is
+ * safe to call more than once.
+ * TODO: uv_eio_deinit
+ */
+void uv_eio_init(void);
+#endif
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+
+
+int uv_exepath(char* buffer, size_t* size) {
+ uint32_t usize;
+ int result;
+ char* path;
+ char* fullpath;
+
+ if (!buffer || !size) {
+ return -1;
+ }
+
+ int mib[4];
+
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_PROC;
+ mib[2] = KERN_PROC_PATHNAME;
+ mib[3] = -1;
+
+ size_t cb = *size;
+ if (sysctl(mib, 4, buffer, &cb, NULL, 0) < 0) {
+ *size = 0;
+ return -1;
+ }
+ *size = strlen(buffer);
+
+ return 0;
+}
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+
+#include <stdint.h>
+#include <stddef.h>
+#include <time.h>
+
+#undef NANOSEC
+#define NANOSEC 1000000000
+
+/*
+ * There's probably some way to get time from Linux than gettimeofday(). What
+ * it is, I don't know.
+ */
+uint64_t uv_hrtime() {
+ struct timespec ts;
+ clock_gettime(CLOCK_MONOTONIC, &ts);
+ return (ts.tv_sec * NANOSEC + ts.tv_nsec);
+}
+
+
+int uv_exepath(char* buffer, size_t* size) {
+ uint32_t usize;
+ int result;
+ char* path;
+ char* fullpath;
+
+ if (!buffer || !size) {
+ return -1;
+ }
+
+ *size = readlink("/proc/self/exe", buffer, *size - 1);
+ if (*size <= 0) return -1;
+ buffer[*size] = '\0';
+ return 0;
+}
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+
+#include <limits.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/time.h>
+
+
+uint64_t uv_hrtime() {
+ return (gethrtime());
+}
+
+
+/*
+ * We could use a static buffer for the path manipulations that we need outside
+ * of the function, but this function could be called by multiple consumers and
+ * we don't want to potentially create a race condition in the use of snprintf.
+ */
+int uv_exepath(char* buffer, size_t* size) {
+ size_t res;
+ pid_t pid;
+ char buf[PATH_MAX];
+
+ if (buffer == NULL)
+ return (-1);
+
+ if (size == NULL)
+ return (-1);
+
+ pid = getpid();
+ (void) snprintf(buf, sizeof (buf), "/proc/%d/path/a.out", pid);
+ res = readlink(buf, buffer, *size - 1);
+
+ if (res < 0)
+ return (res);
+
+ buffer[res] = '\0';
+ *size = res;
+ return (0);
+}
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "uv-common.h"
+#include "uv-eio.h"
+
+#include <stddef.h> /* NULL */
+#include <stdio.h> /* printf */
+#include <stdlib.h>
+#include <string.h> /* strerror */
+#include <errno.h>
+#include <assert.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <limits.h> /* PATH_MAX */
+
+#if defined(__APPLE__)
+#include <mach-o/dyld.h> /* _NSGetExecutablePath */
+#endif
+
+#if defined(__FreeBSD__)
+#include <sys/sysctl.h>
+#endif
+
+
+static uv_err_t last_err;
+
+struct uv_ares_data_s {
+ ares_channel channel;
+ /*
+ * While the channel is active this timer is called once per second to be sure
+ * that we're always calling ares_process. See the warning above the
+ * definition of ares_timeout().
+ */
+ ev_timer timer;
+};
+
+static struct uv_ares_data_s ares_data;
+
+
+void uv__tcp_io(EV_P_ ev_io* watcher, int revents);
+void uv__next(EV_P_ ev_idle* watcher, int revents);
+static void uv__tcp_connect(uv_tcp_t*);
+int uv_tcp_open(uv_tcp_t*, int fd);
+static void uv__finish_close(uv_handle_t* handle);
+
+/* flags */
+enum {
+ UV_CLOSING = 0x00000001, /* uv_close() called but not finished. */
+ UV_CLOSED = 0x00000002, /* close(2) finished. */
+ UV_READING = 0x00000004, /* uv_read_start() called. */
+ UV_SHUTTING = 0x00000008, /* uv_shutdown() called but not complete. */
+ UV_SHUT = 0x00000010 /* Write side closed. */
+};
+
+
+void uv_flag_set(uv_handle_t* handle, int flag) {
+ handle->flags |= flag;
+}
+
+
+/* TODO Share this code with Windows. */
+/* TODO Expose callback to user to handle fatal error like V8 does. */
+static void uv_fatal_error(const int errorno, const char* syscall) {
+ char* buf = NULL;
+ const char* errmsg;
+
+ if (buf) {
+ errmsg = buf;
+ } else {
+ errmsg = "Unknown error";
+ }
+
+ if (syscall) {
+ fprintf(stderr, "\nlibuv fatal error. %s: (%d) %s\n", syscall, errorno,
+ errmsg);
+ } else {
+ fprintf(stderr, "\nlibuv fatal error. (%d) %s\n", errorno, errmsg);
+ }
+
+ *((char*)NULL) = 0xff; /* Force debug break */
+ abort();
+}
+
+
+uv_err_t uv_last_error() {
+ return last_err;
+}
+
+
+char* uv_strerror(uv_err_t err) {
+ return strerror(err.sys_errno_);
+}
+
+
+void uv_flag_unset(uv_handle_t* handle, int flag) {
+ handle->flags = handle->flags & ~flag;
+}
+
+
+int uv_flag_is_set(uv_handle_t* handle, int flag) {
+ return (handle->flags & flag) != 0;
+}
+
+
+static uv_err_code uv_translate_sys_error(int sys_errno) {
+ switch (sys_errno) {
+ case 0: return UV_OK;
+ case EACCES: return UV_EACCESS;
+ case EAGAIN: return UV_EAGAIN;
+ case ECONNRESET: return UV_ECONNRESET;
+ case EFAULT: return UV_EFAULT;
+ case EMFILE: return UV_EMFILE;
+ case EINVAL: return UV_EINVAL;
+ case ECONNREFUSED: return UV_ECONNREFUSED;
+ case EADDRINUSE: return UV_EADDRINUSE;
+ case EADDRNOTAVAIL: return UV_EADDRNOTAVAIL;
+ default: return UV_UNKNOWN;
+ }
+}
+
+
+static uv_err_t uv_err_new_artificial(uv_handle_t* handle, int code) {
+ uv_err_t err;
+ err.sys_errno_ = 0;
+ err.code = code;
+ last_err = err;
+ return err;
+}
+
+
+static uv_err_t uv_err_new(uv_handle_t* handle, int sys_error) {
+ uv_err_t err;
+ err.sys_errno_ = sys_error;
+ err.code = uv_translate_sys_error(sys_error);
+ last_err = err;
+ return err;
+}
+
+
+int uv_close(uv_handle_t* handle, uv_close_cb close_cb) {
+ uv_tcp_t* tcp;
+ uv_async_t* async;
+ uv_timer_t* timer;
+
+ handle->close_cb = close_cb;
+
+ switch (handle->type) {
+ case UV_TCP:
+ tcp = (uv_tcp_t*) handle;
+ ev_io_stop(EV_DEFAULT_ &tcp->write_watcher);
+ ev_io_stop(EV_DEFAULT_ &tcp->read_watcher);
+ break;
+
+ case UV_PREPARE:
+ uv_prepare_stop((uv_prepare_t*) handle);
+ break;
+
+ case UV_CHECK:
+ uv_check_stop((uv_check_t*) handle);
+ break;
+
+ case UV_IDLE:
+ uv_idle_stop((uv_idle_t*) handle);
+ break;
+
+ case UV_ASYNC:
+ async = (uv_async_t*)handle;
+ ev_async_stop(EV_DEFAULT_ &async->async_watcher);
+ ev_ref(EV_DEFAULT_UC);
+ break;
+
+ case UV_TIMER:
+ timer = (uv_timer_t*)handle;
+ if (ev_is_active(&timer->timer_watcher)) {
+ ev_ref(EV_DEFAULT_UC);
+ }
+ ev_timer_stop(EV_DEFAULT_ &timer->timer_watcher);
+ break;
+
+ default:
+ assert(0);
+ return -1;
+ }
+
+ uv_flag_set(handle, UV_CLOSING);
+
+ /* This is used to call the on_close callback in the next loop. */
+ ev_idle_start(EV_DEFAULT_ &handle->next_watcher);
+ ev_feed_event(EV_DEFAULT_ &handle->next_watcher, EV_IDLE);
+ assert(ev_is_pending(&handle->next_watcher));
+
+ return 0;
+}
+
+
+void uv_init() {
+ /* Initialize the default ev loop. */
+#if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1060
+ ev_default_loop(EVBACKEND_KQUEUE);
+#else
+ ev_default_loop(EVFLAG_AUTO);
+#endif
+}
+
+
+int uv_run() {
+ ev_run(EV_DEFAULT_ 0);
+ return 0;
+}
+
+
+static void uv__handle_init(uv_handle_t* handle, uv_handle_type type) {
+ uv_counters()->handle_init++;
+
+ handle->type = type;
+ handle->flags = 0;
+
+ ev_init(&handle->next_watcher, uv__next);
+ handle->next_watcher.data = handle;
+
+ /* Ref the loop until this handle is closed. See uv__finish_close. */
+ ev_ref(EV_DEFAULT_UC);
+}
+
+
+int uv_tcp_init(uv_tcp_t* tcp) {
+ uv__handle_init((uv_handle_t*)tcp, UV_TCP);
+ uv_counters()->tcp_init++;
+
+ tcp->alloc_cb = NULL;
+ tcp->connect_req = NULL;
+ tcp->accepted_fd = -1;
+ tcp->fd = -1;
+ tcp->delayed_error = 0;
+ ngx_queue_init(&tcp->write_queue);
+ ngx_queue_init(&tcp->write_completed_queue);
+ tcp->write_queue_size = 0;
+
+ ev_init(&tcp->read_watcher, uv__tcp_io);
+ tcp->read_watcher.data = tcp;
+
+ ev_init(&tcp->write_watcher, uv__tcp_io);
+ tcp->write_watcher.data = tcp;
+
+ assert(ngx_queue_empty(&tcp->write_queue));
+ assert(ngx_queue_empty(&tcp->write_completed_queue));
+ assert(tcp->write_queue_size == 0);
+
+ return 0;
+}
+
+
+int uv__bind(uv_tcp_t* tcp, int domain, struct sockaddr* addr, int addrsize) {
+ int r;
+
+ if (tcp->fd <= 0) {
+ int fd = socket(domain, SOCK_STREAM, 0);
+
+ if (fd < 0) {
+ uv_err_new((uv_handle_t*)tcp, errno);
+ return -1;
+ }
+
+ if (uv_tcp_open(tcp, fd)) {
+ close(fd);
+ return -2;
+ }
+ }
+
+ assert(tcp->fd >= 0);
+
+ r = bind(tcp->fd, addr, addrsize);
+ tcp->delayed_error = 0;
+
+ if (r) {
+ switch (errno) {
+ case EADDRINUSE:
+ tcp->delayed_error = errno;
+ return 0;
+
+ default:
+ uv_err_new((uv_handle_t*)tcp, errno);
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+
+int uv_tcp_bind(uv_tcp_t* tcp, struct sockaddr_in addr) {
+ if (addr.sin_family != AF_INET) {
+ uv_err_new((uv_handle_t*)tcp, EFAULT);
+ return -1;
+ }
+
+ return uv__bind(tcp, AF_INET, (struct sockaddr*)&addr, sizeof(struct sockaddr_in));
+}
+
+
+int uv_tcp_bind6(uv_tcp_t* tcp, struct sockaddr_in6 addr) {
+ if (addr.sin6_family != AF_INET6) {
+ uv_err_new((uv_handle_t*)tcp, EFAULT);
+ return -1;
+ }
+
+ return uv__bind(tcp, AF_INET6, (struct sockaddr*)&addr, sizeof(struct sockaddr_in6));
+}
+
+
+int uv_tcp_open(uv_tcp_t* tcp, int fd) {
+ int yes;
+ int r;
+
+ assert(fd >= 0);
+ tcp->fd = fd;
+
+ /* Set non-blocking. */
+ yes = 1;
+ r = fcntl(fd, F_SETFL, O_NONBLOCK);
+ assert(r == 0);
+
+ /* Reuse the port address. */
+ r = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int));
+ assert(r == 0);
+
+ /* Associate the fd with each ev_io watcher. */
+ ev_io_set(&tcp->read_watcher, fd, EV_READ);
+ ev_io_set(&tcp->write_watcher, fd, EV_WRITE);
+
+ /* These should have been set up by uv_tcp_init. */
+ assert(tcp->next_watcher.data == tcp);
+ assert(tcp->write_watcher.data == tcp);
+ assert(tcp->read_watcher.data == tcp);
+ assert(tcp->read_watcher.cb == uv__tcp_io);
+ assert(tcp->write_watcher.cb == uv__tcp_io);
+
+ return 0;
+}
+
+
+void uv__server_io(EV_P_ ev_io* watcher, int revents) {
+ int fd;
+ struct sockaddr_storage addr;
+ socklen_t addrlen = sizeof(struct sockaddr_storage);
+ uv_tcp_t* tcp = watcher->data;
+
+ assert(watcher == &tcp->read_watcher ||
+ watcher == &tcp->write_watcher);
+ assert(revents == EV_READ);
+
+ assert(!uv_flag_is_set((uv_handle_t*)tcp, UV_CLOSING));
+
+ if (tcp->accepted_fd >= 0) {
+ ev_io_stop(EV_DEFAULT_ &tcp->read_watcher);
+ return;
+ }
+
+ while (1) {
+ assert(tcp->accepted_fd < 0);
+ fd = accept(tcp->fd, (struct sockaddr*)&addr, &addrlen);
+
+ if (fd < 0) {
+ if (errno == EAGAIN) {
+ /* No problem. */
+ return;
+ } else if (errno == EMFILE) {
+ /* TODO special trick. unlock reserved socket, accept, close. */
+ return;
+ } else {
+ uv_err_new((uv_handle_t*)tcp, errno);
+ tcp->connection_cb((uv_handle_t*)tcp, -1);
+ }
+
+ } else {
+ tcp->accepted_fd = fd;
+ tcp->connection_cb((uv_handle_t*)tcp, 0);
+ if (tcp->accepted_fd >= 0) {
+ /* The user hasn't yet accepted called uv_accept() */
+ ev_io_stop(EV_DEFAULT_ &tcp->read_watcher);
+ return;
+ }
+ }
+ }
+}
+
+
+int uv_accept(uv_handle_t* server, uv_stream_t* client) {
+ uv_tcp_t* tcpServer = (uv_tcp_t*)server;
+ uv_tcp_t* tcpClient = (uv_tcp_t*)client;
+
+ if (tcpServer->accepted_fd < 0) {
+ uv_err_new(server, EAGAIN);
+ return -1;
+ }
+
+ if (uv_tcp_open(tcpClient, tcpServer->accepted_fd)) {
+ /* Ignore error for now */
+ tcpServer->accepted_fd = -1;
+ close(tcpServer->accepted_fd);
+ return -1;
+ } else {
+ tcpServer->accepted_fd = -1;
+ ev_io_start(EV_DEFAULT_ &tcpServer->read_watcher);
+ return 0;
+ }
+}
+
+
+int uv_tcp_listen(uv_tcp_t* tcp, int backlog, uv_connection_cb cb) {
+ int r;
+
+ assert(tcp->fd >= 0);
+
+ if (tcp->delayed_error) {
+ uv_err_new((uv_handle_t*)tcp, tcp->delayed_error);
+ return -1;
+ }
+
+ r = listen(tcp->fd, backlog);
+ if (r < 0) {
+ uv_err_new((uv_handle_t*)tcp, errno);
+ return -1;
+ }
+
+ tcp->connection_cb = cb;
+
+ /* Start listening for connections. */
+ ev_io_set(&tcp->read_watcher, tcp->fd, EV_READ);
+ ev_set_cb(&tcp->read_watcher, uv__server_io);
+ ev_io_start(EV_DEFAULT_ &tcp->read_watcher);
+
+ return 0;
+}
+
+
+void uv__finish_close(uv_handle_t* handle) {
+ uv_tcp_t* tcp;
+
+ assert(uv_flag_is_set(handle, UV_CLOSING));
+ assert(!uv_flag_is_set(handle, UV_CLOSED));
+ uv_flag_set(handle, UV_CLOSED);
+
+ switch (handle->type) {
+ case UV_TCP:
+ /* XXX Is it necessary to stop these watchers here? weren't they
+ * supposed to be stopped in uv_close()?
+ */
+ tcp = (uv_tcp_t*)handle;
+ ev_io_stop(EV_DEFAULT_ &tcp->write_watcher);
+ ev_io_stop(EV_DEFAULT_ &tcp->read_watcher);
+
+ assert(!ev_is_active(&tcp->read_watcher));
+ assert(!ev_is_active(&tcp->write_watcher));
+
+ close(tcp->fd);
+ tcp->fd = -1;
+
+ if (tcp->accepted_fd >= 0) {
+ close(tcp->accepted_fd);
+ tcp->accepted_fd = -1;
+ }
+ break;
+
+ case UV_PREPARE:
+ assert(!ev_is_active(&((uv_prepare_t*)handle)->prepare_watcher));
+ break;
+
+ case UV_CHECK:
+ assert(!ev_is_active(&((uv_check_t*)handle)->check_watcher));
+ break;
+
+ case UV_IDLE:
+ assert(!ev_is_active(&((uv_idle_t*)handle)->idle_watcher));
+ break;
+
+ case UV_ASYNC:
+ assert(!ev_is_active(&((uv_async_t*)handle)->async_watcher));
+ break;
+
+ case UV_TIMER:
+ assert(!ev_is_active(&((uv_timer_t*)handle)->timer_watcher));
+ break;
+
+ default:
+ assert(0);
+ break;
+ }
+
+ ev_idle_stop(EV_DEFAULT_ &handle->next_watcher);
+
+ if (handle->close_cb) {
+ handle->close_cb(handle);
+ }
+
+ ev_unref(EV_DEFAULT_UC);
+}
+
+
+uv_req_t* uv_write_queue_head(uv_tcp_t* tcp) {
+ ngx_queue_t* q;
+ uv_req_t* req;
+
+ if (ngx_queue_empty(&tcp->write_queue)) {
+ return NULL;
+ }
+
+ q = ngx_queue_head(&tcp->write_queue);
+ if (!q) {
+ return NULL;
+ }
+
+ req = ngx_queue_data(q, struct uv_req_s, queue);
+ assert(req);
+
+ return req;
+}
+
+
+void uv__next(EV_P_ ev_idle* watcher, int revents) {
+ uv_handle_t* handle = watcher->data;
+ assert(watcher == &handle->next_watcher);
+ assert(revents == EV_IDLE);
+
+ /* For now this function is only to handle the closing event, but we might
+ * put more stuff here later.
+ */
+ assert(uv_flag_is_set(handle, UV_CLOSING));
+ uv__finish_close(handle);
+}
+
+
+static void uv__drain(uv_tcp_t* tcp) {
+ uv_req_t* req;
+ uv_shutdown_cb cb;
+
+ assert(!uv_write_queue_head(tcp));
+ assert(tcp->write_queue_size == 0);
+
+ ev_io_stop(EV_DEFAULT_ &tcp->write_watcher);
+
+ /* Shutdown? */
+ if (uv_flag_is_set((uv_handle_t*)tcp, UV_SHUTTING) &&
+ !uv_flag_is_set((uv_handle_t*)tcp, UV_CLOSING) &&
+ !uv_flag_is_set((uv_handle_t*)tcp, UV_SHUT)) {
+ assert(tcp->shutdown_req);
+
+ req = tcp->shutdown_req;
+ cb = (uv_shutdown_cb)req->cb;
+
+ if (shutdown(tcp->fd, SHUT_WR)) {
+ /* Error. Report it. User should call uv_close(). */
+ uv_err_new((uv_handle_t*)tcp, errno);
+ if (cb) cb(req, -1);
+ } else {
+ uv_err_new((uv_handle_t*)tcp, 0);
+ uv_flag_set((uv_handle_t*)tcp, UV_SHUT);
+ if (cb) cb(req, 0);
+ }
+ }
+}
+
+
+/* On success returns NULL. On error returns a pointer to the write request
+ * which had the error.
+ */
+static uv_req_t* uv__write(uv_tcp_t* tcp) {
+ uv_req_t* req;
+ struct iovec* iov;
+ int iovcnt;
+ ssize_t n;
+
+ assert(tcp->fd >= 0);
+
+ /* TODO: should probably while(1) here until EAGAIN */
+
+ /* Get the request at the head of the queue. */
+ req = uv_write_queue_head(tcp);
+ if (!req) {
+ assert(tcp->write_queue_size == 0);
+ return NULL;
+ }
+
+ assert(req->handle == (uv_handle_t*)tcp);
+
+ /* Cast to iovec. We had to have our own uv_buf_t instead of iovec
+ * because Windows's WSABUF is not an iovec.
+ */
+ assert(sizeof(uv_buf_t) == sizeof(struct iovec));
+ iov = (struct iovec*) &(req->bufs[req->write_index]);
+ iovcnt = req->bufcnt - req->write_index;
+
+ /* Now do the actual writev. Note that we've been updating the pointers
+ * inside the iov each time we write. So there is no need to offset it.
+ */
+
+ if (iovcnt == 1) {
+ n = write(tcp->fd, iov[0].iov_base, iov[0].iov_len);
+ }
+ else {
+ n = writev(tcp->fd, iov, iovcnt);
+ }
+
+ if (n < 0) {
+ if (errno != EAGAIN) {
+ /* Error */
+ uv_err_new((uv_handle_t*)tcp, errno);
+ return req;
+ }
+ } else {
+ /* Successful write */
+
+ /* Update the counters. */
+ while (n > 0) {
+ uv_buf_t* buf = &(req->bufs[req->write_index]);
+ size_t len = buf->len;
+
+ assert(req->write_index < req->bufcnt);
+
+ if (n < len) {
+ buf->base += n;
+ buf->len -= n;
+ tcp->write_queue_size -= n;
+ n = 0;
+
+ /* There is more to write. Break and ensure the watcher is pending. */
+ break;
+
+ } else {
+ /* Finished writing the buf at index req->write_index. */
+ req->write_index++;
+
+ assert(n >= len);
+ n -= len;
+
+ assert(tcp->write_queue_size >= len);
+ tcp->write_queue_size -= len;
+
+ if (req->write_index == req->bufcnt) {
+ /* Then we're done! */
+ assert(n == 0);
+
+ /* Pop the req off tcp->write_queue. */
+ ngx_queue_remove(&req->queue);
+ if (req->bufs != req->bufsml) {
+ free(req->bufs);
+ }
+ req->bufs = NULL;
+
+ /* Add it to the write_completed_queue where it will have its
+ * callback called in the near future.
+ * TODO: start trying to write the next request.
+ */
+ ngx_queue_insert_tail(&tcp->write_completed_queue, &req->queue);
+ ev_feed_event(EV_DEFAULT_ &tcp->write_watcher, EV_WRITE);
+ return NULL;
+ }
+ }
+ }
+ }
+
+ /* Either we've counted n down to zero or we've got EAGAIN. */
+ assert(n == 0 || n == -1);
+
+ /* We're not done. */
+ ev_io_start(EV_DEFAULT_ &tcp->write_watcher);
+
+ return NULL;
+}
+
+
+static void uv__write_callbacks(uv_tcp_t* tcp) {
+ uv_write_cb cb;
+ int callbacks_made = 0;
+ ngx_queue_t* q;
+ uv_req_t* req;
+
+ while (!ngx_queue_empty(&tcp->write_completed_queue)) {
+ /* Pop a req off write_completed_queue. */
+ q = ngx_queue_head(&tcp->write_completed_queue);
+ assert(q);
+ req = ngx_queue_data(q, struct uv_req_s, queue);
+ ngx_queue_remove(q);
+
+ cb = (uv_write_cb) req->cb;
+
+ /* NOTE: call callback AFTER freeing the request data. */
+ if (cb) {
+ cb(req, 0);
+ }
+
+ callbacks_made++;
+ }
+
+ assert(ngx_queue_empty(&tcp->write_completed_queue));
+
+ /* Write queue drained. */
+ if (!uv_write_queue_head(tcp)) {
+ uv__drain(tcp);
+ }
+}
+
+
+void uv__read(uv_tcp_t* tcp) {
+ uv_buf_t buf;
+ struct iovec* iov;
+ ssize_t nread;
+
+ /* XXX: Maybe instead of having UV_READING we just test if
+ * tcp->read_cb is NULL or not?
+ */
+ while (tcp->read_cb && uv_flag_is_set((uv_handle_t*)tcp, UV_READING)) {
+ assert(tcp->alloc_cb);
+ buf = tcp->alloc_cb((uv_stream_t*)tcp, 64 * 1024);
+
+ assert(buf.len > 0);
+ assert(buf.base);
+
+ iov = (struct iovec*) &buf;
+
+ nread = read(tcp->fd, buf.base, buf.len);
+
+ if (nread < 0) {
+ /* Error */
+ if (errno == EAGAIN) {
+ /* Wait for the next one. */
+ if (uv_flag_is_set((uv_handle_t*)tcp, UV_READING)) {
+ ev_io_start(EV_DEFAULT_UC_ &tcp->read_watcher);
+ }
+ uv_err_new((uv_handle_t*)tcp, EAGAIN);
+ tcp->read_cb((uv_stream_t*)tcp, 0, buf);
+ return;
+ } else {
+ /* Error. User should call uv_close(). */
+ uv_err_new((uv_handle_t*)tcp, errno);
+ tcp->read_cb((uv_stream_t*)tcp, -1, buf);
+ assert(!ev_is_active(&tcp->read_watcher));
+ return;
+ }
+ } else if (nread == 0) {
+ /* EOF */
+ uv_err_new_artificial((uv_handle_t*)tcp, UV_EOF);
+ ev_io_stop(EV_DEFAULT_UC_ &tcp->read_watcher);
+ tcp->read_cb((uv_stream_t*)tcp, -1, buf);
+ return;
+ } else {
+ /* Successful read */
+ tcp->read_cb((uv_stream_t*)tcp, nread, buf);
+ }
+ }
+}
+
+
+int uv_shutdown(uv_req_t* req) {
+ uv_tcp_t* tcp = (uv_tcp_t*)req->handle;
+ assert(tcp->fd >= 0);
+ assert(tcp->type == UV_TCP);
+
+ if (uv_flag_is_set((uv_handle_t*)tcp, UV_SHUT) ||
+ uv_flag_is_set((uv_handle_t*)tcp, UV_CLOSED) ||
+ uv_flag_is_set((uv_handle_t*)tcp, UV_CLOSING)) {
+ return -1;
+ }
+
+ tcp->shutdown_req = req;
+ req->type = UV_SHUTDOWN;
+
+ uv_flag_set((uv_handle_t*)tcp, UV_SHUTTING);
+
+ ev_io_start(EV_DEFAULT_UC_ &tcp->write_watcher);
+
+ return 0;
+}
+
+
+void uv__tcp_io(EV_P_ ev_io* watcher, int revents) {
+ uv_tcp_t* tcp = watcher->data;
+ assert(watcher == &tcp->read_watcher ||
+ watcher == &tcp->write_watcher);
+
+ assert(tcp->fd >= 0);
+
+ assert(!uv_flag_is_set((uv_handle_t*)tcp, UV_CLOSING));
+
+ if (tcp->connect_req) {
+ uv__tcp_connect(tcp);
+ } else {
+ if (revents & EV_READ) {
+ uv__read(tcp);
+ }
+
+ if (revents & EV_WRITE) {
+ uv_req_t* req = uv__write(tcp);
+ if (req) {
+ /* Error. Notify the user. */
+ uv_write_cb cb = (uv_write_cb) req->cb;
+
+ if (cb) {
+ cb(req, -1);
+ }
+ } else {
+ uv__write_callbacks(tcp);
+ }
+ }
+ }
+}
+
+
+/**
+ * We get called here from directly following a call to connect(2).
+ * In order to determine if we've errored out or succeeded must call
+ * getsockopt.
+ */
+static void uv__tcp_connect(uv_tcp_t* tcp) {
+ int error;
+ uv_req_t* req;
+ uv_connect_cb connect_cb;
+ socklen_t errorsize = sizeof(int);
+
+ assert(tcp->fd >= 0);
+
+ req = tcp->connect_req;
+ assert(req);
+
+ if (tcp->delayed_error) {
+ /* To smooth over the differences between unixes errors that
+ * were reported synchronously on the first connect can be delayed
+ * until the next tick--which is now.
+ */
+ error = tcp->delayed_error;
+ tcp->delayed_error = 0;
+ } else {
+ /* Normal situation: we need to get the socket error from the kernel. */
+ getsockopt(tcp->fd, SOL_SOCKET, SO_ERROR, &error, &errorsize);
+ }
+
+ if (!error) {
+ ev_io_start(EV_DEFAULT_ &tcp->read_watcher);
+
+ /* Successful connection */
+ tcp->connect_req = NULL;
+ connect_cb = (uv_connect_cb) req->cb;
+ if (connect_cb) {
+ connect_cb(req, 0);
+ }
+
+ } else if (error == EINPROGRESS) {
+ /* Still connecting. */
+ return;
+ } else {
+ /* Error */
+ uv_err_t err = uv_err_new((uv_handle_t*)tcp, error);
+
+ tcp->connect_req = NULL;
+
+ connect_cb = (uv_connect_cb) req->cb;
+ if (connect_cb) {
+ connect_cb(req, -1);
+ }
+ }
+}
+
+
+static int uv__connect(uv_req_t* req, struct sockaddr* addr,
+ socklen_t addrlen) {
+ uv_tcp_t* tcp = (uv_tcp_t*)req->handle;
+ int r;
+
+ if (tcp->fd <= 0) {
+ int fd = socket(addr->sa_family, SOCK_STREAM, 0);
+
+ if (fd < 0) {
+ uv_err_new((uv_handle_t*)tcp, errno);
+ return -1;
+ }
+
+ if (uv_tcp_open(tcp, fd)) {
+ close(fd);
+ return -2;
+ }
+ }
+
+ req->type = UV_CONNECT;
+ ngx_queue_init(&req->queue);
+
+ if (tcp->connect_req) {
+ uv_err_new((uv_handle_t*)tcp, EALREADY);
+ return -1;
+ }
+
+ if (tcp->type != UV_TCP) {
+ uv_err_new((uv_handle_t*)tcp, ENOTSOCK);
+ return -1;
+ }
+
+ tcp->connect_req = req;
+
+ r = connect(tcp->fd, addr, addrlen);
+
+ tcp->delayed_error = 0;
+
+ if (r != 0 && errno != EINPROGRESS) {
+ switch (errno) {
+ /* If we get a ECONNREFUSED wait until the next tick to report the
+ * error. Solaris wants to report immediately--other unixes want to
+ * wait.
+ */
+ case ECONNREFUSED:
+ tcp->delayed_error = errno;
+ break;
+
+ default:
+ uv_err_new((uv_handle_t*)tcp, errno);
+ return -1;
+ }
+ }
+
+ assert(tcp->write_watcher.data == tcp);
+ ev_io_start(EV_DEFAULT_ &tcp->write_watcher);
+
+ if (tcp->delayed_error) {
+ ev_feed_event(EV_DEFAULT_ &tcp->write_watcher, EV_WRITE);
+ }
+
+ return 0;
+}
+
+
+int uv_tcp_connect(uv_req_t* req, struct sockaddr_in addr) {
+ assert(addr.sin_family == AF_INET);
+ return uv__connect(req, (struct sockaddr*) &addr,
+ sizeof(struct sockaddr_in));
+}
+
+
+int uv_tcp_connect6(uv_req_t* req, struct sockaddr_in6 addr) {
+ assert(addr.sin6_family == AF_INET6);
+ return uv__connect(req, (struct sockaddr*) &addr,
+ sizeof(struct sockaddr_in6));
+}
+
+
+static size_t uv__buf_count(uv_buf_t bufs[], int bufcnt) {
+ size_t total = 0;
+ int i;
+
+ for (i = 0; i < bufcnt; i++) {
+ total += bufs[i].len;
+ }
+
+ return total;
+}
+
+
+/* The buffers to be written must remain valid until the callback is called.
+ * This is not required for the uv_buf_t array.
+ */
+int uv_write(uv_req_t* req, uv_buf_t bufs[], int bufcnt) {
+ uv_tcp_t* tcp = (uv_tcp_t*)req->handle;
+ int empty_queue = (tcp->write_queue_size == 0);
+ assert(tcp->fd >= 0);
+
+ ngx_queue_init(&req->queue);
+ req->type = UV_WRITE;
+
+
+ if (bufcnt < UV_REQ_BUFSML_SIZE) {
+ req->bufs = req->bufsml;
+ }
+ else {
+ req->bufs = malloc(sizeof(uv_buf_t) * bufcnt);
+ }
+
+ memcpy(req->bufs, bufs, bufcnt * sizeof(uv_buf_t));
+ req->bufcnt = bufcnt;
+
+ // fprintf(stderr, "cnt: %d bufs: %p bufsml: %p\n", bufcnt, req->bufs, req->bufsml);
+
+ req->write_index = 0;
+ tcp->write_queue_size += uv__buf_count(bufs, bufcnt);
+
+ /* Append the request to write_queue. */
+ ngx_queue_insert_tail(&tcp->write_queue, &req->queue);
+
+ assert(!ngx_queue_empty(&tcp->write_queue));
+ assert(tcp->write_watcher.cb == uv__tcp_io);
+ assert(tcp->write_watcher.data == tcp);
+ assert(tcp->write_watcher.fd == tcp->fd);
+
+ /* If the queue was empty when this function began, we should attempt to
+ * do the write immediately. Otherwise start the write_watcher and wait
+ * for the fd to become writable.
+ */
+ if (empty_queue) {
+ if (uv__write(tcp)) {
+ /* Error. uv_last_error has been set. */
+ return -1;
+ }
+ }
+
+ /* If the queue is now empty - we've flushed the request already. That
+ * means we need to make the callback. The callback can only be done on a
+ * fresh stack so we feed the event loop in order to service it.
+ */
+ if (ngx_queue_empty(&tcp->write_queue)) {
+ ev_feed_event(EV_DEFAULT_ &tcp->write_watcher, EV_WRITE);
+ } else {
+ /* Otherwise there is data to write - so we should wait for the file
+ * descriptor to become writable.
+ */
+ ev_io_start(EV_DEFAULT_ &tcp->write_watcher);
+ }
+
+ return 0;
+}
+
+
+void uv_ref() {
+ ev_ref(EV_DEFAULT_UC);
+}
+
+
+void uv_unref() {
+ ev_unref(EV_DEFAULT_UC);
+}
+
+
+void uv_update_time() {
+ ev_now_update(EV_DEFAULT_UC);
+}
+
+
+int64_t uv_now() {
+ return (int64_t)(ev_now(EV_DEFAULT_UC) * 1000);
+}
+
+
+int uv_read_start(uv_stream_t* stream, uv_alloc_cb alloc_cb, uv_read_cb read_cb) {
+ uv_tcp_t* tcp = (uv_tcp_t*)stream;
+
+ /* The UV_READING flag is irrelevant of the state of the tcp - it just
+ * expresses the desired state of the user.
+ */
+ uv_flag_set((uv_handle_t*)tcp, UV_READING);
+
+ /* TODO: try to do the read inline? */
+ /* TODO: keep track of tcp state. If we've gotten a EOF then we should
+ * not start the IO watcher.
+ */
+ assert(tcp->fd >= 0);
+ assert(alloc_cb);
+
+ tcp->read_cb = read_cb;
+ tcp->alloc_cb = alloc_cb;
+
+ /* These should have been set by uv_tcp_init. */
+ assert(tcp->read_watcher.data == tcp);
+ assert(tcp->read_watcher.cb == uv__tcp_io);
+
+ ev_io_start(EV_DEFAULT_UC_ &tcp->read_watcher);
+ return 0;
+}
+
+
+int uv_read_stop(uv_stream_t* stream) {
+ uv_tcp_t* tcp = (uv_tcp_t*)stream;
+
+ uv_flag_unset((uv_handle_t*)tcp, UV_READING);
+
+ ev_io_stop(EV_DEFAULT_UC_ &tcp->read_watcher);
+ tcp->read_cb = NULL;
+ tcp->alloc_cb = NULL;
+ return 0;
+}
+
+
+void uv_req_init(uv_req_t* req, uv_handle_t* handle, void* cb) {
+ uv_counters()->req_init++;
+ req->type = UV_UNKNOWN_REQ;
+ req->cb = cb;
+ req->handle = handle;
+ ngx_queue_init(&req->queue);
+}
+
+
+static void uv__prepare(EV_P_ ev_prepare* w, int revents) {
+ uv_prepare_t* prepare = w->data;
+
+ if (prepare->prepare_cb) {
+ prepare->prepare_cb(prepare, 0);
+ }
+}
+
+
+int uv_prepare_init(uv_prepare_t* prepare) {
+ uv__handle_init((uv_handle_t*)prepare, UV_PREPARE);
+ uv_counters()->prepare_init++;
+
+ ev_prepare_init(&prepare->prepare_watcher, uv__prepare);
+ prepare->prepare_watcher.data = prepare;
+
+ prepare->prepare_cb = NULL;
+
+ return 0;
+}
+
+
+int uv_prepare_start(uv_prepare_t* prepare, uv_prepare_cb cb) {
+ int was_active = ev_is_active(&prepare->prepare_watcher);
+
+ prepare->prepare_cb = cb;
+
+ ev_prepare_start(EV_DEFAULT_UC_ &prepare->prepare_watcher);
+
+ if (!was_active) {
+ ev_unref(EV_DEFAULT_UC);
+ }
+
+ return 0;
+}
+
+
+int uv_prepare_stop(uv_prepare_t* prepare) {
+ int was_active = ev_is_active(&prepare->prepare_watcher);
+
+ ev_prepare_stop(EV_DEFAULT_UC_ &prepare->prepare_watcher);
+
+ if (was_active) {
+ ev_ref(EV_DEFAULT_UC);
+ }
+ return 0;
+}
+
+
+
+static void uv__check(EV_P_ ev_check* w, int revents) {
+ uv_check_t* check = w->data;
+
+ if (check->check_cb) {
+ check->check_cb(check, 0);
+ }
+}
+
+
+int uv_check_init(uv_check_t* check) {
+ uv__handle_init((uv_handle_t*)check, UV_CHECK);
+ uv_counters()->check_init;
+
+ ev_check_init(&check->check_watcher, uv__check);
+ check->check_watcher.data = check;
+
+ check->check_cb = NULL;
+
+ return 0;
+}
+
+
+int uv_check_start(uv_check_t* check, uv_check_cb cb) {
+ int was_active = ev_is_active(&check->check_watcher);
+
+ check->check_cb = cb;
+
+ ev_check_start(EV_DEFAULT_UC_ &check->check_watcher);
+
+ if (!was_active) {
+ ev_unref(EV_DEFAULT_UC);
+ }
+
+ return 0;
+}
+
+
+int uv_check_stop(uv_check_t* check) {
+ int was_active = ev_is_active(&check->check_watcher);
+
+ ev_check_stop(EV_DEFAULT_UC_ &check->check_watcher);
+
+ if (was_active) {
+ ev_ref(EV_DEFAULT_UC);
+ }
+
+ return 0;
+}
+
+
+static void uv__idle(EV_P_ ev_idle* w, int revents) {
+ uv_idle_t* idle = (uv_idle_t*)(w->data);
+
+ if (idle->idle_cb) {
+ idle->idle_cb(idle, 0);
+ }
+}
+
+
+
+int uv_idle_init(uv_idle_t* idle) {
+ uv__handle_init((uv_handle_t*)idle, UV_IDLE);
+ uv_counters()->idle_init++;
+
+ ev_idle_init(&idle->idle_watcher, uv__idle);
+ idle->idle_watcher.data = idle;
+
+ idle->idle_cb = NULL;
+
+ return 0;
+}
+
+
+int uv_idle_start(uv_idle_t* idle, uv_idle_cb cb) {
+ int was_active = ev_is_active(&idle->idle_watcher);
+
+ idle->idle_cb = cb;
+ ev_idle_start(EV_DEFAULT_UC_ &idle->idle_watcher);
+
+ if (!was_active) {
+ ev_unref(EV_DEFAULT_UC);
+ }
+
+ return 0;
+}
+
+
+int uv_idle_stop(uv_idle_t* idle) {
+ int was_active = ev_is_active(&idle->idle_watcher);
+
+ ev_idle_stop(EV_DEFAULT_UC_ &idle->idle_watcher);
+
+ if (was_active) {
+ ev_ref(EV_DEFAULT_UC);
+ }
+
+ return 0;
+}
+
+
+int uv_is_active(uv_handle_t* handle) {
+ switch (handle->type) {
+ case UV_TIMER:
+ return ev_is_active(&((uv_timer_t*)handle)->timer_watcher);
+
+ case UV_PREPARE:
+ return ev_is_active(&((uv_prepare_t*)handle)->prepare_watcher);
+
+ case UV_CHECK:
+ return ev_is_active(&((uv_check_t*)handle)->check_watcher);
+
+ case UV_IDLE:
+ return ev_is_active(&((uv_idle_t*)handle)->idle_watcher);
+
+ default:
+ return 1;
+ }
+}
+
+
+static void uv__async(EV_P_ ev_async* w, int revents) {
+ uv_async_t* async = w->data;
+
+ if (async->async_cb) {
+ async->async_cb(async, 0);
+ }
+}
+
+
+int uv_async_init(uv_async_t* async, uv_async_cb async_cb) {
+ uv__handle_init((uv_handle_t*)async, UV_ASYNC);
+ uv_counters()->async_init++;
+
+ ev_async_init(&async->async_watcher, uv__async);
+ async->async_watcher.data = async;
+
+ async->async_cb = async_cb;
+
+ /* Note: This does not have symmetry with the other libev wrappers. */
+ ev_async_start(EV_DEFAULT_UC_ &async->async_watcher);
+ ev_unref(EV_DEFAULT_UC);
+
+ return 0;
+}
+
+
+int uv_async_send(uv_async_t* async) {
+ ev_async_send(EV_DEFAULT_UC_ &async->async_watcher);
+}
+
+
+static void uv__timer_cb(EV_P_ ev_timer* w, int revents) {
+ uv_timer_t* timer = w->data;
+
+ if (!ev_is_active(w)) {
+ ev_ref(EV_DEFAULT_UC);
+ }
+
+ if (timer->timer_cb) {
+ timer->timer_cb(timer, 0);
+ }
+}
+
+
+int uv_timer_init(uv_timer_t* timer) {
+ uv__handle_init((uv_handle_t*)timer, UV_TIMER);
+ uv_counters()->timer_init++;
+
+ ev_init(&timer->timer_watcher, uv__timer_cb);
+ timer->timer_watcher.data = timer;
+
+ return 0;
+}
+
+
+int uv_timer_start(uv_timer_t* timer, uv_timer_cb cb, int64_t timeout,
+ int64_t repeat) {
+ if (ev_is_active(&timer->timer_watcher)) {
+ return -1;
+ }
+
+ timer->timer_cb = cb;
+ ev_timer_set(&timer->timer_watcher, timeout / 1000.0, repeat / 1000.0);
+ ev_timer_start(EV_DEFAULT_UC_ &timer->timer_watcher);
+ ev_unref(EV_DEFAULT_UC);
+ return 0;
+}
+
+
+int uv_timer_stop(uv_timer_t* timer) {
+ if (ev_is_active(&timer->timer_watcher)) {
+ ev_ref(EV_DEFAULT_UC);
+ }
+
+ ev_timer_stop(EV_DEFAULT_UC_ &timer->timer_watcher);
+ return 0;
+}
+
+
+int uv_timer_again(uv_timer_t* timer) {
+ if (!ev_is_active(&timer->timer_watcher)) {
+ uv_err_new((uv_handle_t*)timer, EINVAL);
+ return -1;
+ }
+
+ ev_timer_again(EV_DEFAULT_UC_ &timer->timer_watcher);
+ return 0;
+}
+
+void uv_timer_set_repeat(uv_timer_t* timer, int64_t repeat) {
+ assert(timer->type == UV_TIMER);
+ timer->timer_watcher.repeat = repeat / 1000.0;
+}
+
+int64_t uv_timer_get_repeat(uv_timer_t* timer) {
+ assert(timer->type == UV_TIMER);
+ return (int64_t)(1000 * timer->timer_watcher.repeat);
+}
+
+
+/*
+ * This is called once per second by ares_data.timer. It is used to
+ * constantly callback into c-ares for possibly processing timeouts.
+ */
+static void uv__ares_timeout(EV_P_ struct ev_timer* watcher, int revents) {
+ assert(watcher == &ares_data.timer);
+ assert(revents == EV_TIMER);
+ assert(!uv_ares_handles_empty());
+ ares_process_fd(ares_data.channel, ARES_SOCKET_BAD, ARES_SOCKET_BAD);
+}
+
+
+static void uv__ares_io(EV_P_ struct ev_io* watcher, int revents) {
+ /* Reset the idle timer */
+ ev_timer_again(EV_A_ &ares_data.timer);
+
+ /* Process DNS responses */
+ ares_process_fd(ares_data.channel,
+ revents & EV_READ ? watcher->fd : ARES_SOCKET_BAD,
+ revents & EV_WRITE ? watcher->fd : ARES_SOCKET_BAD);
+}
+
+
+/* Allocates and returns a new uv_ares_task_t */
+static uv_ares_task_t* uv__ares_task_create(int fd) {
+ uv_ares_task_t* h = malloc(sizeof(uv_ares_task_t));
+
+ if (h == NULL) {
+ uv_fatal_error(ENOMEM, "malloc");
+ }
+
+ h->sock = fd;
+
+ ev_io_init(&h->read_watcher, uv__ares_io, fd, EV_READ);
+ ev_io_init(&h->write_watcher, uv__ares_io, fd, EV_WRITE);
+
+ h->read_watcher.data = h;
+ h->write_watcher.data = h;
+}
+
+
+/* Callback from ares when socket operation is started */
+static void uv__ares_sockstate_cb(void* data, ares_socket_t sock,
+ int read, int write) {
+ uv_ares_task_t* h = uv_find_ares_handle(sock);
+
+ if (read || write) {
+ if (!h) {
+ /* New socket */
+
+ /* If this is the first socket then start the timer. */
+ if (!ev_is_active(&ares_data.timer)) {
+ assert(uv_ares_handles_empty());
+ ev_timer_again(EV_DEFAULT_UC_ &ares_data.timer);
+ }
+
+ h = uv__ares_task_create(sock);
+ uv_add_ares_handle(h);
+ }
+
+ if (read) {
+ ev_io_start(EV_DEFAULT_UC_ &h->read_watcher);
+ } else {
+ ev_io_stop(EV_DEFAULT_UC_ &h->read_watcher);
+ }
+
+ if (write) {
+ ev_io_start(EV_DEFAULT_UC_ &h->write_watcher);
+ } else {
+ ev_io_stop(EV_DEFAULT_UC_ &h->write_watcher);
+ }
+
+ } else {
+ /*
+ * read == 0 and write == 0 this is c-ares's way of notifying us that
+ * the socket is now closed. We must free the data associated with
+ * socket.
+ */
+ assert(h && "When an ares socket is closed we should have a handle for it");
+
+ ev_io_stop(EV_DEFAULT_UC_ &h->read_watcher);
+ ev_io_stop(EV_DEFAULT_UC_ &h->write_watcher);
+
+ uv_remove_ares_handle(h);
+ free(h);
+
+ if (uv_ares_handles_empty()) {
+ ev_timer_stop(EV_DEFAULT_UC_ &ares_data.timer);
+ }
+ }
+}
+
+
+/* c-ares integration initialize and terminate */
+/* TODO: share this with windows? */
+int uv_ares_init_options(ares_channel *channelptr,
+ struct ares_options *options,
+ int optmask) {
+ int rc;
+
+ /* only allow single init at a time */
+ if (ares_data.channel != NULL) {
+ uv_err_new_artificial(NULL, UV_EALREADY);
+ return -1;
+ }
+
+ /* set our callback as an option */
+ options->sock_state_cb = uv__ares_sockstate_cb;
+ options->sock_state_cb_data = &ares_data;
+ optmask |= ARES_OPT_SOCK_STATE_CB;
+
+ /* We do the call to ares_init_option for caller. */
+ rc = ares_init_options(channelptr, options, optmask);
+
+ /* if success, save channel */
+ if (rc == ARES_SUCCESS) {
+ ares_data.channel = *channelptr;
+ }
+
+ /*
+ * Initialize the timeout timer. The timer won't be started until the
+ * first socket is opened.
+ */
+ ev_init(&ares_data.timer, uv__ares_timeout);
+ ares_data.timer.repeat = 1.0;
+
+ return rc;
+}
+
+
+/* TODO share this with windows? */
+void uv_ares_destroy(ares_channel channel) {
+ /* only allow destroy if did init */
+ if (ares_data.channel != NULL) {
+ ev_timer_stop(EV_DEFAULT_UC_ &ares_data.timer);
+ ares_destroy(channel);
+ ares_data.channel = NULL;
+ }
+}
+
+
+static int uv_getaddrinfo_done(eio_req* req) {
+ uv_getaddrinfo_t* handle = req->data;
+
+ uv_unref();
+
+ free(handle->hints);
+ free(handle->service);
+ free(handle->hostname);
+
+ if (handle->retcode != 0) {
+ /* TODO how to display gai error strings? */
+ uv_err_new(NULL, handle->retcode);
+ }
+
+ handle->cb(handle, handle->retcode, handle->res);
+
+ freeaddrinfo(handle->res);
+ handle->res = NULL;
+
+ return 0;
+}
+
+
+static int getaddrinfo_thread_proc(eio_req *req) {
+ uv_getaddrinfo_t* handle = req->data;
+
+ handle->retcode = getaddrinfo(handle->hostname,
+ handle->service,
+ &handle->hints,
+ &handle->res);
+ return 0;
+}
+
+
+/* stub implementation of uv_getaddrinfo */
+int uv_getaddrinfo(uv_getaddrinfo_t* handle,
+ uv_getaddrinfo_cb cb,
+ const char* hostname,
+ const char* service,
+ const struct addrinfo* hints) {
+ uv_eio_init();
+
+ if (handle == NULL || cb == NULL ||
+ (hostname == NULL && service == NULL)) {
+ uv_err_new_artificial(NULL, UV_EINVAL);
+ return -1;
+ }
+
+ memset(handle, 0, sizeof(uv_getaddrinfo_t));
+
+ /* TODO don't alloc so much. */
+
+ if (hints) {
+ handle->hints = malloc(sizeof(struct addrinfo));
+ memcpy(&handle->hints, hints, sizeof(struct addrinfo));
+ }
+
+ /* TODO security! check lengths, check return values. */
+
+ handle->cb = cb;
+ handle->hostname = hostname ? strdup(hostname) : NULL;
+ handle->service = service ? strdup(service) : NULL;
+
+ /* TODO check handle->hostname == NULL */
+ /* TODO check handle->service == NULL */
+
+ uv_ref();
+
+ eio_req* req = eio_custom(getaddrinfo_thread_proc, EIO_PRI_DEFAULT,
+ uv_getaddrinfo_done, handle);
+ assert(req);
+ assert(req->data == handle);
+
+ return 0;
+}
+
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <malloc.h>
+#include <stdio.h>
+
+#include "uv.h"
+#include "uv-common.h"
+#include "tree.h"
+
+/*
+ * Guids and typedefs for winsock extension functions
+ * Mingw32 doesn't have these :-(
+ */
+#ifndef WSAID_ACCEPTEX
+# define WSAID_ACCEPTEX \
+ {0xb5367df1, 0xcbac, 0x11cf, \
+ {0x95, 0xca, 0x00, 0x80, 0x5f, 0x48, 0xa1, 0x92}}
+
+# define WSAID_CONNECTEX \
+ {0x25a207b9, 0xddf3, 0x4660, \
+ {0x8e, 0xe9, 0x76, 0xe5, 0x8c, 0x74, 0x06, 0x3e}}
+
+# define WSAID_GETACCEPTEXSOCKADDRS \
+ {0xb5367df2, 0xcbac, 0x11cf, \
+ {0x95, 0xca, 0x00, 0x80, 0x5f, 0x48, 0xa1, 0x92}}
+
+# define WSAID_DISCONNECTEX \
+ {0x7fda2e11, 0x8630, 0x436f, \
+ {0xa0, 0x31, 0xf5, 0x36, 0xa6, 0xee, 0xc1, 0x57}}
+
+# define WSAID_TRANSMITFILE \
+ {0xb5367df0, 0xcbac, 0x11cf, \
+ {0x95, 0xca, 0x00, 0x80, 0x5f, 0x48, 0xa1, 0x92}}
+
+ typedef BOOL PASCAL (*LPFN_ACCEPTEX)
+ (SOCKET sListenSocket,
+ SOCKET sAcceptSocket,
+ PVOID lpOutputBuffer,
+ DWORD dwReceiveDataLength,
+ DWORD dwLocalAddressLength,
+ DWORD dwRemoteAddressLength,
+ LPDWORD lpdwBytesReceived,
+ LPOVERLAPPED lpOverlapped);
+
+ typedef BOOL PASCAL (*LPFN_CONNECTEX)
+ (SOCKET s,
+ const struct sockaddr* name,
+ int namelen,
+ PVOID lpSendBuffer,
+ DWORD dwSendDataLength,
+ LPDWORD lpdwBytesSent,
+ LPOVERLAPPED lpOverlapped);
+
+ typedef void PASCAL (*LPFN_GETACCEPTEXSOCKADDRS)
+ (PVOID lpOutputBuffer,
+ DWORD dwReceiveDataLength,
+ DWORD dwLocalAddressLength,
+ DWORD dwRemoteAddressLength,
+ LPSOCKADDR* LocalSockaddr,
+ LPINT LocalSockaddrLength,
+ LPSOCKADDR* RemoteSockaddr,
+ LPINT RemoteSockaddrLength);
+
+ typedef BOOL PASCAL (*LPFN_DISCONNECTEX)
+ (SOCKET hSocket,
+ LPOVERLAPPED lpOverlapped,
+ DWORD dwFlags,
+ DWORD reserved);
+
+ typedef BOOL PASCAL (*LPFN_TRANSMITFILE)
+ (SOCKET hSocket,
+ HANDLE hFile,
+ DWORD nNumberOfBytesToWrite,
+ DWORD nNumberOfBytesPerSend,
+ LPOVERLAPPED lpOverlapped,
+ LPTRANSMIT_FILE_BUFFERS lpTransmitBuffers,
+ DWORD dwFlags);
+#endif
+
+/*
+ * MinGW is missing this too
+ */
+#ifndef SO_UPDATE_CONNECT_CONTEXT
+# define SO_UPDATE_CONNECT_CONTEXT 0x7010
+#endif
+
+
+/*
+ * MinGW is missing this too
+ */
+#ifndef _MSC_VER
+ typedef struct addrinfoW {
+ int ai_flags;
+ int ai_family;
+ int ai_socktype;
+ int ai_protocol;
+ size_t ai_addrlen;
+ wchar_t* ai_canonname;
+ struct sockaddr* ai_addr;
+ struct addrinfoW* ai_next;
+ } ADDRINFOW, *PADDRINFOW;
+
+ DECLSPEC_IMPORT int WSAAPI GetAddrInfoW(const wchar_t* node,
+ const wchar_t* service,
+ const ADDRINFOW* hints,
+ PADDRINFOW* result);
+
+ DECLSPEC_IMPORT void WSAAPI FreeAddrInfoW(PADDRINFOW pAddrInfo);
+#endif
+
+
+/*
+ * Pointers to winsock extension functions to be retrieved dynamically
+ */
+static LPFN_CONNECTEX pConnectEx;
+static LPFN_ACCEPTEX pAcceptEx;
+static LPFN_GETACCEPTEXSOCKADDRS pGetAcceptExSockAddrs;
+static LPFN_DISCONNECTEX pDisconnectEx;
+static LPFN_TRANSMITFILE pTransmitFile;
+/* need IPv6 versions of winsock extension functions */
+static LPFN_CONNECTEX pConnectEx6;
+static LPFN_ACCEPTEX pAcceptEx6;
+static LPFN_GETACCEPTEXSOCKADDRS pGetAcceptExSockAddrs6;
+static LPFN_DISCONNECTEX pDisconnectEx6;
+static LPFN_TRANSMITFILE pTransmitFile6;
+
+
+/*
+ * Private uv_handle flags
+ */
+#define UV_HANDLE_CLOSING 0x0001
+#define UV_HANDLE_CLOSED 0x0002
+#define UV_HANDLE_BOUND 0x0004
+#define UV_HANDLE_LISTENING 0x0008
+#define UV_HANDLE_CONNECTION 0x0010
+#define UV_HANDLE_CONNECTED 0x0020
+#define UV_HANDLE_READING 0x0040
+#define UV_HANDLE_ACTIVE 0x0040
+#define UV_HANDLE_EOF 0x0080
+#define UV_HANDLE_SHUTTING 0x0100
+#define UV_HANDLE_SHUT 0x0200
+#define UV_HANDLE_ENDGAME_QUEUED 0x0400
+#define UV_HANDLE_BIND_ERROR 0x1000
+#define UV_HANDLE_IPV6 0x2000
+
+/*
+ * Private uv_req flags.
+ */
+/* The request is currently queued. */
+#define UV_REQ_PENDING 0x01
+
+
+/* Binary tree used to keep the list of timers sorted. */
+static int uv_timer_compare(uv_timer_t* handle1, uv_timer_t* handle2);
+RB_HEAD(uv_timer_tree_s, uv_timer_s);
+RB_PROTOTYPE_STATIC(uv_timer_tree_s, uv_timer_s, tree_entry, uv_timer_compare)
+
+/* The head of the timers tree */
+static struct uv_timer_tree_s uv_timers_ = RB_INITIALIZER(uv_timers_);
+
+
+/* Head of a single-linked list of closed handles */
+static uv_handle_t* uv_endgame_handles_ = NULL;
+
+
+/* Tail of a single-linked circular queue of pending reqs. If the queue is */
+/* empty, tail_ is NULL. If there is only one item, tail_->next_req == tail_ */
+static uv_req_t* uv_pending_reqs_tail_ = NULL;
+
+
+/* The current time according to the event loop. in msecs. */
+static int64_t uv_now_ = 0;
+static int64_t uv_ticks_per_msec_ = 0;
+
+
+/*
+ * Global I/O completion port
+ */
+static HANDLE uv_iocp_;
+
+
+/* Global error code */
+static const uv_err_t uv_ok_ = { UV_OK, ERROR_SUCCESS };
+static uv_err_t uv_last_error_ = { UV_OK, ERROR_SUCCESS };
+
+/* Error message string */
+static char* uv_err_str_ = NULL;
+
+
+/* Reference count that keeps the event loop alive */
+static int uv_refs_ = 0;
+
+
+/* Ip address used to bind to any port at any interface */
+static struct sockaddr_in uv_addr_ip4_any_;
+static struct sockaddr_in6 uv_addr_ip6_any_;
+
+
+/* A zero-size buffer for use by uv_read */
+static char uv_zero_[] = "";
+
+
+/* mark if IPv6 sockets are supported */
+static BOOL uv_allow_ipv6 = FALSE;
+
+/*
+ * Subclass of uv_handle_t. Used for integration of c-ares.
+ */
+typedef struct uv_ares_action_s uv_ares_action_t;
+
+struct uv_ares_action_s {
+ UV_HANDLE_FIELDS
+ struct uv_req_s ares_req;
+ SOCKET sock;
+ int read;
+ int write;
+};
+
+void uv_ares_process(uv_ares_action_t* handle, uv_req_t* req);
+void uv_ares_task_cleanup(uv_ares_task_t* handle, uv_req_t* req);
+void uv_ares_poll(uv_timer_t* handle, int status);
+
+/* memory used per ares_channel */
+struct uv_ares_channel_s {
+ ares_channel channel;
+ int activesockets;
+ uv_timer_t pollingtimer;
+};
+
+typedef struct uv_ares_channel_s uv_ares_channel_t;
+
+/* static data to hold single ares_channel */
+static uv_ares_channel_t uv_ares_data = { NULL, 0 };
+
+/* default timeout per socket request if ares does not specify value */
+/* use 20 sec */
+#define ARES_TIMEOUT_MS 20000
+
+
+/* getaddrinfo integration */
+static void uv_getaddrinfo_done(uv_getaddrinfo_t* handle, uv_req_t* req);
+/* adjust size value to be multiple of 4. Use to keep pointer aligned */
+/* Do we need different versions of this for different architectures? */
+#define ALIGNED_SIZE(X) ((((X) + 3) >> 2) << 2)
+
+
+/* Atomic set operation on char */
+#ifdef _MSC_VER /* MSVC */
+
+/* _InterlockedOr8 is supported by MSVC on x32 and x64. It is slightly less */
+/* efficient than InterlockedExchange, but InterlockedExchange8 does not */
+/* exist, and interlocked operations on larger targets might require the */
+/* target to be aligned. */
+#pragma intrinsic(_InterlockedOr8)
+
+static char __declspec(inline) uv_atomic_exchange_set(char volatile* target) {
+ return _InterlockedOr8(target, 1);
+}
+
+#else /* GCC */
+
+/* Mingw-32 version, hopefully this works for 64-bit gcc as well. */
+static inline char uv_atomic_exchange_set(char volatile* target) {
+ const char one = 1;
+ char old_value;
+ __asm__ __volatile__ ("lock xchgb %0, %1\n\t"
+ : "=r"(old_value), "=m"(*target)
+ : "0"(one), "m"(*target)
+ : "memory");
+ return old_value;
+}
+
+#endif
+
+
+/*
+ * Display an error message and abort the event loop.
+ */
+static void uv_fatal_error(const int errorno, const char* syscall) {
+ char* buf = NULL;
+ const char* errmsg;
+
+ FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS, NULL, errorno,
+ MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPSTR)&buf, 0, NULL);
+
+ if (buf) {
+ errmsg = buf;
+ } else {
+ errmsg = "Unknown error";
+ }
+
+ /* FormatMessage messages include a newline character already, */
+ /* so don't add another. */
+ if (syscall) {
+ fprintf(stderr, "%s: (%d) %s", syscall, errorno, errmsg);
+ } else {
+ fprintf(stderr, "(%d) %s", errorno, errmsg);
+ }
+
+ if (buf) {
+ LocalFree(buf);
+ }
+
+ *((char*)NULL) = 0xff; /* Force debug break */
+ abort();
+}
+
+
+uv_err_t uv_last_error() {
+ return uv_last_error_;
+}
+
+
+char* uv_strerror(uv_err_t err) {
+ if (uv_err_str_ != NULL) {
+ LocalFree((void*) uv_err_str_);
+ }
+
+ FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS, NULL, err.sys_errno_,
+ MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPSTR)&uv_err_str_, 0, NULL);
+
+ if (uv_err_str_) {
+ return uv_err_str_;
+ } else {
+ return "Unknown error";
+ }
+}
+
+
+static uv_err_code uv_translate_sys_error(int sys_errno) {
+ switch (sys_errno) {
+ case ERROR_SUCCESS: return UV_OK;
+ case ERROR_NOACCESS: return UV_EACCESS;
+ case WSAEACCES: return UV_EACCESS;
+ case ERROR_ADDRESS_ALREADY_ASSOCIATED: return UV_EADDRINUSE;
+ case WSAEADDRINUSE: return UV_EADDRINUSE;
+ case WSAEADDRNOTAVAIL: return UV_EADDRNOTAVAIL;
+ case WSAEWOULDBLOCK: return UV_EAGAIN;
+ case WSAEALREADY: return UV_EALREADY;
+ case ERROR_CONNECTION_REFUSED: return UV_ECONNREFUSED;
+ case WSAECONNREFUSED: return UV_ECONNREFUSED;
+ case WSAEFAULT: return UV_EFAULT;
+ case ERROR_INVALID_DATA: return UV_EINVAL;
+ case WSAEINVAL: return UV_EINVAL;
+ case ERROR_TOO_MANY_OPEN_FILES: return UV_EMFILE;
+ case WSAEMFILE: return UV_EMFILE;
+ case ERROR_OUTOFMEMORY: return UV_ENOMEM;
+ case ERROR_INSUFFICIENT_BUFFER: return UV_EINVAL;
+ case ERROR_INVALID_FLAGS: return UV_EBADF;
+ case ERROR_INVALID_PARAMETER: return UV_EINVAL;
+ case ERROR_NO_UNICODE_TRANSLATION: return UV_ECHARSET;
+ default: return UV_UNKNOWN;
+ }
+}
+
+
+static uv_err_t uv_new_sys_error(int sys_errno) {
+ uv_err_t e;
+ e.code = uv_translate_sys_error(sys_errno);
+ e.sys_errno_ = sys_errno;
+ return e;
+}
+
+
+static void uv_set_sys_error(int sys_errno) {
+ uv_last_error_.code = uv_translate_sys_error(sys_errno);
+ uv_last_error_.sys_errno_ = sys_errno;
+}
+
+
+/*
+ * Retrieves the pointer to a winsock extension function.
+ */
+static BOOL uv_get_extension_function(SOCKET socket, GUID guid,
+ void **target) {
+ DWORD result, bytes;
+
+ result = WSAIoctl(socket,
+ SIO_GET_EXTENSION_FUNCTION_POINTER,
+ &guid,
+ sizeof(guid),
+ (void*)target,
+ sizeof(*target),
+ &bytes,
+ NULL,
+ NULL);
+
+ if (result == SOCKET_ERROR) {
+ *target = NULL;
+ return FALSE;
+ } else {
+ return TRUE;
+ }
+}
+
+
+void uv_init() {
+ const GUID wsaid_connectex = WSAID_CONNECTEX;
+ const GUID wsaid_acceptex = WSAID_ACCEPTEX;
+ const GUID wsaid_getacceptexsockaddrs = WSAID_GETACCEPTEXSOCKADDRS;
+ const GUID wsaid_disconnectex = WSAID_DISCONNECTEX;
+ const GUID wsaid_transmitfile = WSAID_TRANSMITFILE;
+
+ WSADATA wsa_data;
+ int errorno;
+ LARGE_INTEGER timer_frequency;
+ SOCKET dummy;
+ SOCKET dummy6;
+
+ /* Initialize winsock */
+ errorno = WSAStartup(MAKEWORD(2, 2), &wsa_data);
+ if (errorno != 0) {
+ uv_fatal_error(errorno, "WSAStartup");
+ }
+
+ /* Set implicit binding address used by connectEx */
+ uv_addr_ip4_any_ = uv_ip4_addr("0.0.0.0", 0);
+ uv_addr_ip6_any_ = uv_ip6_addr("::1", 0);
+
+ /* Retrieve the needed winsock extension function pointers. */
+ dummy = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
+ if (dummy == INVALID_SOCKET) {
+ uv_fatal_error(WSAGetLastError(), "socket");
+ }
+
+ if (!uv_get_extension_function(dummy,
+ wsaid_connectex,
+ (void**)&pConnectEx) ||
+ !uv_get_extension_function(dummy,
+ wsaid_acceptex,
+ (void**)&pAcceptEx) ||
+ !uv_get_extension_function(dummy,
+ wsaid_getacceptexsockaddrs,
+ (void**)&pGetAcceptExSockAddrs) ||
+ !uv_get_extension_function(dummy,
+ wsaid_disconnectex,
+ (void**)&pDisconnectEx) ||
+ !uv_get_extension_function(dummy,
+ wsaid_transmitfile,
+ (void**)&pTransmitFile)) {
+ uv_fatal_error(WSAGetLastError(),
+ "WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER)");
+ }
+
+ if (closesocket(dummy) == SOCKET_ERROR) {
+ uv_fatal_error(WSAGetLastError(), "closesocket");
+ }
+
+/* optional IPv6 versions of winsock extension functions */
+ dummy6 = socket(AF_INET6, SOCK_STREAM, IPPROTO_IP);
+ if (dummy6 != INVALID_SOCKET) {
+ uv_allow_ipv6 = TRUE;
+
+ if (!uv_get_extension_function(dummy6,
+ wsaid_connectex,
+ (void**)&pConnectEx6) ||
+ !uv_get_extension_function(dummy6,
+ wsaid_acceptex,
+ (void**)&pAcceptEx6) ||
+ !uv_get_extension_function(dummy6,
+ wsaid_getacceptexsockaddrs,
+ (void**)&pGetAcceptExSockAddrs6) ||
+ !uv_get_extension_function(dummy6,
+ wsaid_disconnectex,
+ (void**)&pDisconnectEx6) ||
+ !uv_get_extension_function(dummy6,
+ wsaid_transmitfile,
+ (void**)&pTransmitFile6)) {
+ uv_allow_ipv6 = FALSE;
+ }
+
+ if (closesocket(dummy6) == SOCKET_ERROR) {
+ uv_fatal_error(WSAGetLastError(), "closesocket");
+ }
+ }
+
+ /* Create an I/O completion port */
+ uv_iocp_ = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, 1);
+ if (uv_iocp_ == NULL) {
+ uv_fatal_error(GetLastError(), "CreateIoCompletionPort");
+ }
+
+ /* Initialize the event loop time */
+ if (!QueryPerformanceFrequency(&timer_frequency))
+ uv_fatal_error(GetLastError(), "QueryPerformanceFrequency");
+ uv_ticks_per_msec_ = timer_frequency.QuadPart / 1000;
+
+ uv_update_time();
+}
+
+
+void uv_req_init(uv_req_t* req, uv_handle_t* handle, void* cb) {
+ uv_counters()->req_init++;
+ req->type = UV_UNKNOWN_REQ;
+ req->flags = 0;
+ req->handle = handle;
+ req->cb = cb;
+}
+
+
+static uv_req_t* uv_overlapped_to_req(OVERLAPPED* overlapped) {
+ return CONTAINING_RECORD(overlapped, uv_req_t, overlapped);
+}
+
+
+static void uv_insert_pending_req(uv_req_t* req) {
+ req->next_req = NULL;
+ if (uv_pending_reqs_tail_) {
+ req->next_req = uv_pending_reqs_tail_->next_req;
+ uv_pending_reqs_tail_ = req;
+ } else {
+ req->next_req = req;
+ uv_pending_reqs_tail_ = req;
+ }
+}
+
+
+static uv_req_t* uv_remove_pending_req() {
+ uv_req_t* req;
+
+ if (uv_pending_reqs_tail_) {
+ req = uv_pending_reqs_tail_->next_req;
+
+ if (req == uv_pending_reqs_tail_) {
+ uv_pending_reqs_tail_ = NULL;
+ } else {
+ uv_pending_reqs_tail_->next_req = req->next_req;
+ }
+
+ return req;
+
+ } else {
+ /* queue empty */
+ return NULL;
+ }
+}
+
+
+static int uv_tcp_set_socket(uv_tcp_t* handle, SOCKET socket) {
+ DWORD yes = 1;
+
+ assert(handle->socket == INVALID_SOCKET);
+
+ /* Set the socket to nonblocking mode */
+ if (ioctlsocket(socket, FIONBIO, &yes) == SOCKET_ERROR) {
+ uv_set_sys_error(WSAGetLastError());
+ return -1;
+ }
+
+ /* Make the socket non-inheritable */
+ if (!SetHandleInformation((HANDLE)socket, HANDLE_FLAG_INHERIT, 0)) {
+ uv_set_sys_error(GetLastError());
+ return -1;
+ }
+
+ /* Associate it with the I/O completion port. */
+ /* Use uv_handle_t pointer as completion key. */
+ if (CreateIoCompletionPort((HANDLE)socket,
+ uv_iocp_,
+ (ULONG_PTR)socket,
+ 0) == NULL) {
+ uv_set_sys_error(GetLastError());
+ return -1;
+ }
+
+ handle->socket = socket;
+
+ return 0;
+}
+
+
+static void uv_tcp_init_connection(uv_tcp_t* handle) {
+ handle->flags |= UV_HANDLE_CONNECTION;
+ handle->write_reqs_pending = 0;
+ uv_req_init(&(handle->read_req), (uv_handle_t*)handle, NULL);
+}
+
+
+int uv_tcp_init(uv_tcp_t* handle) {
+ handle->socket = INVALID_SOCKET;
+ handle->write_queue_size = 0;
+ handle->type = UV_TCP;
+ handle->flags = 0;
+ handle->reqs_pending = 0;
+ handle->error = uv_ok_;
+ handle->accept_socket = INVALID_SOCKET;
+
+ uv_counters()->handle_init++;
+ uv_counters()->tcp_init++;
+
+ uv_refs_++;
+
+ return 0;
+}
+
+
+static void uv_tcp_endgame(uv_tcp_t* handle) {
+ uv_err_t err;
+ int status;
+
+ if (handle->flags & UV_HANDLE_SHUTTING &&
+ !(handle->flags & UV_HANDLE_SHUT) &&
+ handle->write_reqs_pending == 0) {
+
+ if (shutdown(handle->socket, SD_SEND) != SOCKET_ERROR) {
+ status = 0;
+ handle->flags |= UV_HANDLE_SHUT;
+ } else {
+ status = -1;
+ err = uv_new_sys_error(WSAGetLastError());
+ }
+ if (handle->shutdown_req->cb) {
+ handle->shutdown_req->flags &= ~UV_REQ_PENDING;
+ if (status == -1) {
+ uv_last_error_ = err;
+ }
+ ((uv_shutdown_cb)handle->shutdown_req->cb)(handle->shutdown_req, status);
+ }
+ handle->reqs_pending--;
+ }
+
+ if (handle->flags & UV_HANDLE_CLOSING &&
+ handle->reqs_pending == 0) {
+ assert(!(handle->flags & UV_HANDLE_CLOSED));
+ handle->flags |= UV_HANDLE_CLOSED;
+
+ if (handle->close_cb) {
+ handle->close_cb((uv_handle_t*)handle);
+ }
+
+ uv_refs_--;
+ }
+}
+
+
+static void uv_timer_endgame(uv_timer_t* handle) {
+ if (handle->flags & UV_HANDLE_CLOSING) {
+ assert(!(handle->flags & UV_HANDLE_CLOSED));
+ handle->flags |= UV_HANDLE_CLOSED;
+
+ if (handle->close_cb) {
+ handle->close_cb((uv_handle_t*)handle);
+ }
+
+ uv_refs_--;
+ }
+}
+
+
+static void uv_loop_watcher_endgame(uv_handle_t* handle) {
+ if (handle->flags & UV_HANDLE_CLOSING) {
+ assert(!(handle->flags & UV_HANDLE_CLOSED));
+ handle->flags |= UV_HANDLE_CLOSED;
+
+ if (handle->close_cb) {
+ handle->close_cb(handle);
+ }
+
+ uv_refs_--;
+ }
+}
+
+
+static void uv_async_endgame(uv_async_t* handle) {
+ if (handle->flags & UV_HANDLE_CLOSING &&
+ !handle->async_sent) {
+ assert(!(handle->flags & UV_HANDLE_CLOSED));
+ handle->flags |= UV_HANDLE_CLOSED;
+
+ if (handle->close_cb) {
+ handle->close_cb((uv_handle_t*)handle);
+ }
+
+ uv_refs_--;
+ }
+}
+
+
+static void uv_process_endgames() {
+ uv_handle_t* handle;
+
+ while (uv_endgame_handles_) {
+ handle = uv_endgame_handles_;
+ uv_endgame_handles_ = handle->endgame_next;
+
+ handle->flags &= ~UV_HANDLE_ENDGAME_QUEUED;
+
+ switch (handle->type) {
+ case UV_TCP:
+ uv_tcp_endgame((uv_tcp_t*)handle);
+ break;
+
+ case UV_TIMER:
+ uv_timer_endgame((uv_timer_t*)handle);
+ break;
+
+ case UV_PREPARE:
+ case UV_CHECK:
+ case UV_IDLE:
+ uv_loop_watcher_endgame(handle);
+ break;
+
+ case UV_ASYNC:
+ uv_async_endgame((uv_async_t*)handle);
+ break;
+
+ default:
+ assert(0);
+ break;
+ }
+ }
+}
+
+
+static void uv_want_endgame(uv_handle_t* handle) {
+ if (!(handle->flags & UV_HANDLE_ENDGAME_QUEUED)) {
+ handle->flags |= UV_HANDLE_ENDGAME_QUEUED;
+
+ handle->endgame_next = uv_endgame_handles_;
+ uv_endgame_handles_ = handle;
+ }
+}
+
+
+static int uv_close_error(uv_handle_t* handle, uv_err_t e) {
+ uv_tcp_t* tcp;
+
+ if (handle->flags & UV_HANDLE_CLOSING) {
+ return 0;
+ }
+
+ handle->error = e;
+ handle->flags |= UV_HANDLE_CLOSING;
+
+ /* Handle-specific close actions */
+ switch (handle->type) {
+ case UV_TCP:
+ tcp = (uv_tcp_t*)handle;
+ tcp->flags &= ~(UV_HANDLE_READING | UV_HANDLE_LISTENING);
+ closesocket(tcp->socket);
+ if (tcp->reqs_pending == 0) {
+ uv_want_endgame(handle);
+ }
+ return 0;
+
+ case UV_TIMER:
+ uv_timer_stop((uv_timer_t*)handle);
+ uv_want_endgame(handle);
+ return 0;
+
+ case UV_PREPARE:
+ uv_prepare_stop((uv_prepare_t*)handle);
+ uv_want_endgame(handle);
+ return 0;
+
+ case UV_CHECK:
+ uv_check_stop((uv_check_t*)handle);
+ uv_want_endgame(handle);
+ return 0;
+
+ case UV_IDLE:
+ uv_idle_stop((uv_idle_t*)handle);
+ uv_want_endgame(handle);
+ return 0;
+
+ case UV_ASYNC:
+ if (!((uv_async_t*)handle)->async_sent) {
+ uv_want_endgame(handle);
+ }
+ return 0;
+
+ default:
+ /* Not supported */
+ assert(0);
+ return -1;
+ }
+}
+
+
+int uv_close(uv_handle_t* handle, uv_close_cb close_cb) {
+ handle->close_cb = close_cb;
+ return uv_close_error(handle, uv_ok_);
+}
+
+
+int uv__bind(uv_tcp_t* handle, int domain, struct sockaddr* addr, int addrsize) {
+ DWORD err;
+ int r;
+ SOCKET sock;
+
+ if (handle->socket == INVALID_SOCKET) {
+ sock = socket(domain, SOCK_STREAM, 0);
+ if (sock == INVALID_SOCKET) {
+ uv_set_sys_error(WSAGetLastError());
+ return -1;
+ }
+
+ if (uv_tcp_set_socket(handle, sock) == -1) {
+ closesocket(sock);
+ return -1;
+ }
+ }
+
+ r = bind(handle->socket, addr, addrsize);
+
+ if (r == SOCKET_ERROR) {
+ err = WSAGetLastError();
+ if (err == WSAEADDRINUSE) {
+ /* Some errors are not to be reported until connect() or listen() */
+ handle->error = uv_new_sys_error(err);
+ handle->flags |= UV_HANDLE_BIND_ERROR;
+ } else {
+ uv_set_sys_error(err);
+ return -1;
+ }
+ }
+
+ handle->flags |= UV_HANDLE_BOUND;
+
+ return 0;
+}
+
+
+int uv_tcp_bind(uv_tcp_t* handle, struct sockaddr_in addr) {
+ if (addr.sin_family != AF_INET) {
+ uv_set_sys_error(WSAEFAULT);
+ return -1;
+ }
+
+ return uv__bind(handle, AF_INET, (struct sockaddr*)&addr, sizeof(struct sockaddr_in));
+}
+
+
+int uv_tcp_bind6(uv_tcp_t* handle, struct sockaddr_in6 addr) {
+ if (addr.sin6_family != AF_INET6) {
+ uv_set_sys_error(WSAEFAULT);
+ return -1;
+ }
+ if (uv_allow_ipv6) {
+ handle->flags |= UV_HANDLE_IPV6;
+ return uv__bind(handle, AF_INET6, (struct sockaddr*)&addr, sizeof(struct sockaddr_in6));
+ } else {
+ uv_new_sys_error(UV_EAFNOSUPPORT);
+ return -1;
+ }
+}
+
+
+static void uv_queue_accept(uv_tcp_t* handle) {
+ uv_req_t* req;
+ BOOL success;
+ DWORD bytes;
+ SOCKET accept_socket;
+ short family;
+ LPFN_ACCEPTEX pAcceptExFamily;
+
+ assert(handle->flags & UV_HANDLE_LISTENING);
+ assert(handle->accept_socket == INVALID_SOCKET);
+
+ /* Prepare the uv_req structure. */
+ req = &handle->accept_req;
+ assert(!(req->flags & UV_REQ_PENDING));
+ req->type = UV_ACCEPT;
+ req->flags |= UV_REQ_PENDING;
+
+ /* choose family and extension function */
+ if ((handle->flags & UV_HANDLE_IPV6) != 0) {
+ family = AF_INET6;
+ pAcceptExFamily = pAcceptEx6;
+ } else {
+ family = AF_INET;
+ pAcceptExFamily = pAcceptEx;
+ }
+
+ /* Open a socket for the accepted connection. */
+ accept_socket = socket(family, SOCK_STREAM, 0);
+ if (accept_socket == INVALID_SOCKET) {
+ req->error = uv_new_sys_error(WSAGetLastError());
+ uv_insert_pending_req(req);
+ return;
+ }
+
+ /* Prepare the overlapped structure. */
+ memset(&(req->overlapped), 0, sizeof(req->overlapped));
+
+ success = pAcceptExFamily(handle->socket,
+ accept_socket,
+ (void*)&handle->accept_buffer,
+ 0,
+ sizeof(struct sockaddr_storage),
+ sizeof(struct sockaddr_storage),
+ &bytes,
+ &req->overlapped);
+
+ if (!success && WSAGetLastError() != ERROR_IO_PENDING) {
+ /* Make this req pending reporting an error. */
+ req->error = uv_new_sys_error(WSAGetLastError());
+ uv_insert_pending_req(req);
+ /* Destroy the preallocated client socket. */
+ closesocket(accept_socket);
+ return;
+ }
+
+ handle->accept_socket = accept_socket;
+
+ handle->reqs_pending++;
+ req->flags |= UV_REQ_PENDING;
+}
+
+
+static void uv_queue_read(uv_tcp_t* handle) {
+ uv_req_t* req;
+ uv_buf_t buf;
+ int result;
+ DWORD bytes, flags;
+
+ assert(handle->flags & UV_HANDLE_READING);
+
+ req = &handle->read_req;
+ assert(!(req->flags & UV_REQ_PENDING));
+ memset(&req->overlapped, 0, sizeof(req->overlapped));
+ req->type = UV_READ;
+
+ buf.base = (char*) &uv_zero_;
+ buf.len = 0;
+
+ flags = 0;
+ result = WSARecv(handle->socket,
+ (WSABUF*)&buf,
+ 1,
+ &bytes,
+ &flags,
+ &req->overlapped,
+ NULL);
+ if (result != 0 && WSAGetLastError() != ERROR_IO_PENDING) {
+ /* Make this req pending reporting an error. */
+ req->error = uv_new_sys_error(WSAGetLastError());
+ uv_insert_pending_req(req);
+ return;
+ }
+
+ req->flags |= UV_REQ_PENDING;
+ handle->reqs_pending++;
+}
+
+
+int uv_tcp_listen(uv_tcp_t* handle, int backlog, uv_connection_cb cb) {
+ assert(backlog > 0);
+
+ if (handle->flags & UV_HANDLE_BIND_ERROR) {
+ uv_last_error_ = handle->error;
+ return -1;
+ }
+
+ if (handle->flags & UV_HANDLE_LISTENING ||
+ handle->flags & UV_HANDLE_READING) {
+ /* Already listening. */
+ uv_set_sys_error(WSAEALREADY);
+ return -1;
+ }
+
+ if (listen(handle->socket, backlog) == SOCKET_ERROR) {
+ uv_set_sys_error(WSAGetLastError());
+ return -1;
+ }
+
+ handle->flags |= UV_HANDLE_LISTENING;
+ handle->connection_cb = cb;
+
+ uv_req_init(&(handle->accept_req), (uv_handle_t*)handle, NULL);
+ uv_queue_accept(handle);
+
+ return 0;
+}
+
+
+int uv_accept(uv_handle_t* server, uv_stream_t* client) {
+ int rv = 0;
+ uv_tcp_t* tcpServer = (uv_tcp_t*)server;
+ uv_tcp_t* tcpClient = (uv_tcp_t*)client;
+
+ if (tcpServer->accept_socket == INVALID_SOCKET) {
+ uv_set_sys_error(WSAENOTCONN);
+ return -1;
+ }
+
+ if (uv_tcp_set_socket(tcpClient, tcpServer->accept_socket) == -1) {
+ closesocket(tcpServer->accept_socket);
+ rv = -1;
+ } else {
+ uv_tcp_init_connection(tcpClient);
+ }
+
+ tcpServer->accept_socket = INVALID_SOCKET;
+
+ if (!(tcpServer->flags & UV_HANDLE_CLOSING)) {
+ uv_queue_accept(tcpServer);
+ }
+
+ return rv;
+}
+
+
+int uv_read_start(uv_stream_t* handle, uv_alloc_cb alloc_cb, uv_read_cb read_cb) {
+ if (!(handle->flags & UV_HANDLE_CONNECTION)) {
+ uv_set_sys_error(WSAEINVAL);
+ return -1;
+ }
+
+ if (handle->flags & UV_HANDLE_READING) {
+ uv_set_sys_error(WSAEALREADY);
+ return -1;
+ }
+
+ if (handle->flags & UV_HANDLE_EOF) {
+ uv_set_sys_error(WSAESHUTDOWN);
+ return -1;
+ }
+
+ handle->flags |= UV_HANDLE_READING;
+ handle->read_cb = read_cb;
+ handle->alloc_cb = alloc_cb;
+
+ /* If reading was stopped and then started again, there could stell be a */
+ /* read request pending. */
+ if (!(handle->read_req.flags & UV_REQ_PENDING))
+ uv_queue_read((uv_tcp_t*)handle);
+
+ return 0;
+}
+
+
+int uv_read_stop(uv_stream_t* handle) {
+ handle->flags &= ~UV_HANDLE_READING;
+
+ return 0;
+}
+
+
+int uv_tcp_connect(uv_req_t* req, struct sockaddr_in addr) {
+ int addrsize = sizeof(struct sockaddr_in);
+ BOOL success;
+ DWORD bytes;
+ uv_tcp_t* handle = (uv_tcp_t*)req->handle;
+
+ assert(!(req->flags & UV_REQ_PENDING));
+
+ if (handle->flags & UV_HANDLE_BIND_ERROR) {
+ uv_last_error_ = handle->error;
+ return -1;
+ }
+
+ if (addr.sin_family != AF_INET) {
+ uv_set_sys_error(WSAEFAULT);
+ return -1;
+ }
+
+ if (!(handle->flags & UV_HANDLE_BOUND) &&
+ uv_tcp_bind(handle, uv_addr_ip4_any_) < 0)
+ return -1;
+
+ memset(&req->overlapped, 0, sizeof(req->overlapped));
+ req->type = UV_CONNECT;
+
+ success = pConnectEx(handle->socket,
+ (struct sockaddr*)&addr,
+ addrsize,
+ NULL,
+ 0,
+ &bytes,
+ &req->overlapped);
+
+ if (!success && WSAGetLastError() != ERROR_IO_PENDING) {
+ uv_set_sys_error(WSAGetLastError());
+ return -1;
+ }
+
+ req->flags |= UV_REQ_PENDING;
+ handle->reqs_pending++;
+
+ return 0;
+}
+
+
+int uv_tcp_connect6(uv_req_t* req, struct sockaddr_in6 addr) {
+ int addrsize = sizeof(struct sockaddr_in6);
+ BOOL success;
+ DWORD bytes;
+ uv_tcp_t* handle = (uv_tcp_t*)req->handle;
+
+ if (!uv_allow_ipv6) {
+ uv_new_sys_error(UV_EAFNOSUPPORT);
+ return -1;
+ }
+
+ assert(!(req->flags & UV_REQ_PENDING));
+
+ if (handle->flags & UV_HANDLE_BIND_ERROR) {
+ uv_last_error_ = handle->error;
+ return -1;
+ }
+
+ if (addr.sin6_family != AF_INET6) {
+ uv_set_sys_error(WSAEFAULT);
+ return -1;
+ }
+
+ if (!(handle->flags & UV_HANDLE_BOUND) &&
+ uv_tcp_bind6(handle, uv_addr_ip6_any_) < 0)
+ return -1;
+
+ memset(&req->overlapped, 0, sizeof(req->overlapped));
+ req->type = UV_CONNECT;
+
+ success = pConnectEx6(handle->socket,
+ (struct sockaddr*)&addr,
+ addrsize,
+ NULL,
+ 0,
+ &bytes,
+ &req->overlapped);
+
+ if (!success && WSAGetLastError() != ERROR_IO_PENDING) {
+ uv_set_sys_error(WSAGetLastError());
+ return -1;
+ }
+
+ req->flags |= UV_REQ_PENDING;
+ handle->reqs_pending++;
+
+ return 0;
+}
+
+
+static size_t uv_count_bufs(uv_buf_t bufs[], int count) {
+ size_t bytes = 0;
+ int i;
+
+ for (i = 0; i < count; i++) {
+ bytes += (size_t)bufs[i].len;
+ }
+
+ return bytes;
+}
+
+
+int uv_write(uv_req_t* req, uv_buf_t bufs[], int bufcnt) {
+ int result;
+ DWORD bytes, err;
+ uv_tcp_t* handle = (uv_tcp_t*) req->handle;
+
+ assert(!(req->flags & UV_REQ_PENDING));
+
+ if (!(req->handle->flags & UV_HANDLE_CONNECTION)) {
+ uv_set_sys_error(WSAEINVAL);
+ return -1;
+ }
+
+ if (req->handle->flags & UV_HANDLE_SHUTTING) {
+ uv_set_sys_error(WSAESHUTDOWN);
+ return -1;
+ }
+
+ memset(&req->overlapped, 0, sizeof(req->overlapped));
+ req->type = UV_WRITE;
+
+ result = WSASend(handle->socket,
+ (WSABUF*)bufs,
+ bufcnt,
+ &bytes,
+ 0,
+ &req->overlapped,
+ NULL);
+ if (result != 0) {
+ err = WSAGetLastError();
+ if (err != WSA_IO_PENDING) {
+ /* Send failed due to an error. */
+ uv_set_sys_error(WSAGetLastError());
+ return -1;
+ }
+ }
+
+ if (result == 0) {
+ /* Request completed immediately. */
+ req->queued_bytes = 0;
+ } else {
+ /* Request queued by the kernel. */
+ req->queued_bytes = uv_count_bufs(bufs, bufcnt);
+ handle->write_queue_size += req->queued_bytes;
+ }
+
+ req->flags |= UV_REQ_PENDING;
+ handle->reqs_pending++;
+ handle->write_reqs_pending++;
+
+ return 0;
+}
+
+
+int uv_shutdown(uv_req_t* req) {
+ uv_tcp_t* handle = (uv_tcp_t*) req->handle;
+ int status = 0;
+
+ if (!(req->handle->flags & UV_HANDLE_CONNECTION)) {
+ uv_set_sys_error(WSAEINVAL);
+ return -1;
+ }
+
+ if (handle->flags & UV_HANDLE_SHUTTING) {
+ uv_set_sys_error(WSAESHUTDOWN);
+ return -1;
+ }
+
+ req->type = UV_SHUTDOWN;
+ req->flags |= UV_REQ_PENDING;
+
+ handle->flags |= UV_HANDLE_SHUTTING;
+ handle->shutdown_req = req;
+ handle->reqs_pending++;
+
+ uv_want_endgame((uv_handle_t*)handle);
+
+ return 0;
+}
+
+
+static void uv_tcp_return_req(uv_tcp_t* handle, uv_req_t* req) {
+ DWORD bytes, flags, err;
+ uv_buf_t buf;
+
+ assert(handle->type == UV_TCP);
+
+ /* Mark the request non-pending */
+ req->flags &= ~UV_REQ_PENDING;
+
+ switch (req->type) {
+ case UV_WRITE:
+ handle->write_queue_size -= req->queued_bytes;
+ if (req->cb) {
+ uv_last_error_ = req->error;
+ ((uv_write_cb)req->cb)(req, uv_last_error_.code == UV_OK ? 0 : -1);
+ }
+ handle->write_reqs_pending--;
+ if (handle->write_reqs_pending == 0 &&
+ handle->flags & UV_HANDLE_SHUTTING) {
+ uv_want_endgame((uv_handle_t*)handle);
+ }
+ break;
+
+ case UV_READ:
+ if (req->error.code != UV_OK) {
+ /* An error occurred doing the 0-read. */
+ if (!(handle->flags & UV_HANDLE_READING)) {
+ break;
+ }
+
+ /* Stop reading and report error. */
+ handle->flags &= ~UV_HANDLE_READING;
+ uv_last_error_ = req->error;
+ buf.base = 0;
+ buf.len = 0;
+ handle->read_cb((uv_stream_t*)handle, -1, buf);
+ break;
+ }
+
+ /* Do nonblocking reads until the buffer is empty */
+ while (handle->flags & UV_HANDLE_READING) {
+ buf = handle->alloc_cb((uv_stream_t*)handle, 65536);
+ assert(buf.len > 0);
+ flags = 0;
+ if (WSARecv(handle->socket,
+ (WSABUF*)&buf,
+ 1,
+ &bytes,
+ &flags,
+ NULL,
+ NULL) != SOCKET_ERROR) {
+ if (bytes > 0) {
+ /* Successful read */
+ handle->read_cb((uv_stream_t*)handle, bytes, buf);
+ /* Read again only if bytes == buf.len */
+ if (bytes < buf.len) {
+ break;
+ }
+ } else {
+ /* Connection closed */
+ handle->flags &= ~UV_HANDLE_READING;
+ handle->flags |= UV_HANDLE_EOF;
+ uv_last_error_.code = UV_EOF;
+ uv_last_error_.sys_errno_ = ERROR_SUCCESS;
+ handle->read_cb((uv_stream_t*)handle, -1, buf);
+ break;
+ }
+ } else {
+ err = WSAGetLastError();
+ if (err == WSAEWOULDBLOCK) {
+ /* Read buffer was completely empty, report a 0-byte read. */
+ uv_set_sys_error(WSAEWOULDBLOCK);
+ handle->read_cb((uv_stream_t*)handle, 0, buf);
+ } else {
+ /* Ouch! serious error. */
+ uv_set_sys_error(err);
+ handle->read_cb((uv_stream_t*)handle, -1, buf);
+ }
+ break;
+ }
+ }
+ /* Post another 0-read if still reading and not closing. */
+ if (handle->flags & UV_HANDLE_READING) {
+ uv_queue_read(handle);
+ }
+ break;
+
+ case UV_ACCEPT:
+ /* If handle->accepted_socket is not a valid socket, then */
+ /* uv_queue_accept must have failed. This is a serious error. We stop */
+ /* accepting connections and report this error to the connection */
+ /* callback. */
+ if (handle->accept_socket == INVALID_SOCKET) {
+ if (!(handle->flags & UV_HANDLE_LISTENING)) {
+ break;
+ }
+ handle->flags &= ~UV_HANDLE_LISTENING;
+ if (handle->connection_cb) {
+ uv_last_error_ = req->error;
+ handle->connection_cb((uv_handle_t*)handle, -1);
+ }
+ break;
+ }
+
+ if (req->error.code == UV_OK &&
+ setsockopt(handle->accept_socket,
+ SOL_SOCKET,
+ SO_UPDATE_ACCEPT_CONTEXT,
+ (char*)&handle->socket,
+ sizeof(handle->socket)) == 0) {
+ /* Accept and SO_UPDATE_ACCEPT_CONTEXT were successful. */
+ if (handle->connection_cb) {
+ handle->connection_cb((uv_handle_t*)handle, 0);
+ }
+ } else {
+ /* Error related to accepted socket is ignored because the server */
+ /* socket may still be healthy. If the server socket is broken
+ /* uv_queue_accept will detect it. */
+ closesocket(handle->accept_socket);
+ if (handle->flags & UV_HANDLE_LISTENING) {
+ uv_queue_accept(handle);
+ }
+ }
+ break;
+
+ case UV_CONNECT:
+ if (req->cb) {
+ if (req->error.code == UV_OK) {
+ if (setsockopt(handle->socket,
+ SOL_SOCKET,
+ SO_UPDATE_CONNECT_CONTEXT,
+ NULL,
+ 0) == 0) {
+ uv_tcp_init_connection(handle);
+ ((uv_connect_cb)req->cb)(req, 0);
+ } else {
+ uv_set_sys_error(WSAGetLastError());
+ ((uv_connect_cb)req->cb)(req, -1);
+ }
+ } else {
+ uv_last_error_ = req->error;
+ ((uv_connect_cb)req->cb)(req, -1);
+ }
+ }
+ break;
+
+ default:
+ assert(0);
+ }
+
+ /* The number of pending requests is now down by one */
+ handle->reqs_pending--;
+
+ /* Queue the handle's close callback if it is closing and there are no */
+ /* more pending requests. */
+ if (handle->flags & UV_HANDLE_CLOSING &&
+ handle->reqs_pending == 0) {
+ uv_want_endgame((uv_handle_t*)handle);
+ }
+}
+
+
+static int uv_timer_compare(uv_timer_t* a, uv_timer_t* b) {
+ if (a->due < b->due)
+ return -1;
+ if (a->due > b->due)
+ return 1;
+ if ((intptr_t)a < (intptr_t)b)
+ return -1;
+ if ((intptr_t)a > (intptr_t)b)
+ return 1;
+ return 0;
+}
+
+
+RB_GENERATE_STATIC(uv_timer_tree_s, uv_timer_s, tree_entry, uv_timer_compare);
+
+
+int uv_timer_init(uv_timer_t* handle) {
+ uv_counters()->handle_init++;
+ uv_counters()->timer_init++;
+
+ handle->type = UV_TIMER;
+ handle->flags = 0;
+ handle->error = uv_ok_;
+ handle->timer_cb = NULL;
+ handle->repeat = 0;
+
+ uv_refs_++;
+
+ return 0;
+}
+
+
+int uv_timer_start(uv_timer_t* handle, uv_timer_cb timer_cb, int64_t timeout, int64_t repeat) {
+ if (handle->flags & UV_HANDLE_ACTIVE) {
+ RB_REMOVE(uv_timer_tree_s, &uv_timers_, handle);
+ }
+
+ handle->timer_cb = (void*) timer_cb;
+ handle->due = uv_now_ + timeout;
+ handle->repeat = repeat;
+ handle->flags |= UV_HANDLE_ACTIVE;
+
+ if (RB_INSERT(uv_timer_tree_s, &uv_timers_, handle) != NULL) {
+ uv_fatal_error(ERROR_INVALID_DATA, "RB_INSERT");
+ }
+
+ return 0;
+}
+
+
+int uv_timer_stop(uv_timer_t* handle) {
+ if (!(handle->flags & UV_HANDLE_ACTIVE))
+ return 0;
+
+ RB_REMOVE(uv_timer_tree_s, &uv_timers_, handle);
+
+ handle->flags &= ~UV_HANDLE_ACTIVE;
+
+ return 0;
+}
+
+
+int uv_timer_again(uv_timer_t* handle) {
+ /* If timer_cb is NULL that means that the timer was never started. */
+ if (!handle->timer_cb) {
+ uv_set_sys_error(ERROR_INVALID_DATA);
+ return -1;
+ }
+
+ if (handle->flags & UV_HANDLE_ACTIVE) {
+ RB_REMOVE(uv_timer_tree_s, &uv_timers_, handle);
+ handle->flags &= ~UV_HANDLE_ACTIVE;
+ }
+
+ if (handle->repeat) {
+ handle->due = uv_now_ + handle->repeat;
+
+ if (RB_INSERT(uv_timer_tree_s, &uv_timers_, handle) != NULL) {
+ uv_fatal_error(ERROR_INVALID_DATA, "RB_INSERT");
+ }
+
+ handle->flags |= UV_HANDLE_ACTIVE;
+ }
+
+ return 0;
+}
+
+
+void uv_timer_set_repeat(uv_timer_t* handle, int64_t repeat) {
+ assert(handle->type == UV_TIMER);
+ handle->repeat = repeat;
+}
+
+
+int64_t uv_timer_get_repeat(uv_timer_t* handle) {
+ assert(handle->type == UV_TIMER);
+ return handle->repeat;
+}
+
+
+void uv_update_time() {
+ LARGE_INTEGER counter;
+
+ if (!QueryPerformanceCounter(&counter))
+ uv_fatal_error(GetLastError(), "QueryPerformanceCounter");
+
+ uv_now_ = counter.QuadPart / uv_ticks_per_msec_;
+}
+
+
+int64_t uv_now() {
+ return uv_now_;
+}
+
+
+#define UV_LOOP_WATCHER_DEFINE(name, NAME) \
+ /* Lists of active loop (prepare / check / idle) watchers */ \
+ static uv_##name##_t* uv_##name##_handles_ = NULL; \
+ \
+ /* This pointer will refer to the prepare/check/idle handle whose */ \
+ /* callback is scheduled to be called next. This is needed to allow */ \
+ /* safe removal from one of the lists above while that list being */ \
+ /* iterated over. */ \
+ static uv_##name##_t* uv_next_##name##_handle_ = NULL; \
+ \
+ \
+ int uv_##name##_init(uv_##name##_t* handle) { \
+ handle->type = UV_##NAME; \
+ handle->flags = 0; \
+ handle->error = uv_ok_; \
+ \
+ uv_refs_++; \
+ \
+ uv_counters()->handle_init++; \
+ uv_counters()->prepare_init++; \
+ \
+ return 0; \
+ } \
+ \
+ \
+ int uv_##name##_start(uv_##name##_t* handle, uv_##name##_cb cb) { \
+ uv_##name##_t* old_head; \
+ \
+ assert(handle->type == UV_##NAME); \
+ \
+ if (handle->flags & UV_HANDLE_ACTIVE) \
+ return 0; \
+ \
+ old_head = uv_##name##_handles_; \
+ \
+ handle->name##_next = old_head; \
+ handle->name##_prev = NULL; \
+ \
+ if (old_head) { \
+ old_head->name##_prev = handle; \
+ } \
+ \
+ uv_##name##_handles_ = handle; \
+ \
+ handle->name##_cb = cb; \
+ handle->flags |= UV_HANDLE_ACTIVE; \
+ \
+ return 0; \
+ } \
+ \
+ \
+ int uv_##name##_stop(uv_##name##_t* handle) { \
+ assert(handle->type == UV_##NAME); \
+ \
+ if (!(handle->flags & UV_HANDLE_ACTIVE)) \
+ return 0; \
+ \
+ /* Update loop head if needed */ \
+ if (uv_##name##_handles_ == handle) { \
+ uv_##name##_handles_ = handle->name##_next; \
+ } \
+ \
+ /* Update the iterator-next pointer of needed */ \
+ if (uv_next_##name##_handle_ == handle) { \
+ uv_next_##name##_handle_ = handle->name##_next; \
+ } \
+ \
+ if (handle->name##_prev) { \
+ handle->name##_prev->name##_next = handle->name##_next; \
+ } \
+ if (handle->name##_next) { \
+ handle->name##_next->name##_prev = handle->name##_prev; \
+ } \
+ \
+ handle->flags &= ~UV_HANDLE_ACTIVE; \
+ \
+ return 0; \
+ } \
+ \
+ \
+ static void uv_##name##_invoke() { \
+ uv_##name##_t* handle; \
+ \
+ uv_next_##name##_handle_ = uv_##name##_handles_; \
+ \
+ while (uv_next_##name##_handle_ != NULL) { \
+ handle = uv_next_##name##_handle_; \
+ uv_next_##name##_handle_ = handle->name##_next; \
+ \
+ handle->name##_cb(handle, 0); \
+ } \
+ }
+
+
+UV_LOOP_WATCHER_DEFINE(prepare, PREPARE)
+UV_LOOP_WATCHER_DEFINE(check, CHECK)
+UV_LOOP_WATCHER_DEFINE(idle, IDLE)
+
+
+int uv_is_active(uv_handle_t* handle) {
+ switch (handle->type) {
+ case UV_TIMER:
+ case UV_IDLE:
+ case UV_PREPARE:
+ case UV_CHECK:
+ return (handle->flags & UV_HANDLE_ACTIVE) ? 1 : 0;
+
+ default:
+ return 1;
+ }
+}
+
+
+int uv_async_init(uv_async_t* handle, uv_async_cb async_cb) {
+ uv_req_t* req;
+
+ uv_counters()->handle_init++;
+ uv_counters()->async_init++;
+
+ handle->type = UV_ASYNC;
+ handle->flags = 0;
+ handle->async_sent = 0;
+ handle->error = uv_ok_;
+
+ req = &handle->async_req;
+ uv_req_init(req, (uv_handle_t*)handle, async_cb);
+ req->type = UV_WAKEUP;
+
+ uv_refs_++;
+
+ return 0;
+}
+
+
+int uv_async_send(uv_async_t* handle) {
+ if (handle->type != UV_ASYNC) {
+ /* Can't set errno because that's not thread-safe. */
+ return -1;
+ }
+
+ /* The user should make sure never to call uv_async_send to a closing */
+ /* or closed handle. */
+ assert(!(handle->flags & UV_HANDLE_CLOSING));
+
+ if (!uv_atomic_exchange_set(&handle->async_sent)) {
+ if (!PostQueuedCompletionStatus(uv_iocp_,
+ 0,
+ 0,
+ &handle->async_req.overlapped)) {
+ uv_fatal_error(GetLastError(), "PostQueuedCompletionStatus");
+ }
+ }
+
+ return 0;
+}
+
+
+static void uv_async_return_req(uv_async_t* handle, uv_req_t* req) {
+ assert(handle->type == UV_ASYNC);
+ assert(req->type == UV_WAKEUP);
+
+ handle->async_sent = 0;
+ if (req->cb) {
+ ((uv_async_cb)req->cb)((uv_async_t*) handle, 0);
+ }
+ if (handle->flags & UV_HANDLE_CLOSING) {
+ uv_want_endgame((uv_handle_t*)handle);
+ }
+}
+
+
+static void uv_process_reqs() {
+ uv_req_t* req;
+ uv_handle_t* handle;
+
+ while (req = uv_remove_pending_req()) {
+ handle = req->handle;
+
+ switch (handle->type) {
+ case UV_TCP:
+ uv_tcp_return_req((uv_tcp_t*)handle, req);
+ break;
+
+ case UV_ASYNC:
+ uv_async_return_req((uv_async_t*)handle, req);
+ break;
+
+ case UV_ARES:
+ uv_ares_process((uv_ares_action_t*)handle, req);
+ break;
+
+ case UV_ARES_TASK:
+ uv_ares_task_cleanup((uv_ares_task_t*)handle, req);
+ break;
+
+ case UV_GETADDRINFO:
+ uv_getaddrinfo_done((uv_getaddrinfo_t*)handle, req);
+ break;
+
+ default:
+ assert(0);
+ }
+ }
+}
+
+
+static void uv_process_timers() {
+ uv_timer_t* timer;
+
+ /* Call timer callbacks */
+ for (timer = RB_MIN(uv_timer_tree_s, &uv_timers_);
+ timer != NULL && timer->due <= uv_now_;
+ timer = RB_MIN(uv_timer_tree_s, &uv_timers_)) {
+ RB_REMOVE(uv_timer_tree_s, &uv_timers_, timer);
+
+ if (timer->repeat != 0) {
+ /* If it is a repeating timer, reschedule with repeat timeout. */
+ timer->due += timer->repeat;
+ if (timer->due < uv_now_) {
+ timer->due = uv_now_;
+ }
+ if (RB_INSERT(uv_timer_tree_s, &uv_timers_, timer) != NULL) {
+ uv_fatal_error(ERROR_INVALID_DATA, "RB_INSERT");
+ }
+ } else {
+ /* If non-repeating, mark the timer as inactive. */
+ timer->flags &= ~UV_HANDLE_ACTIVE;
+ }
+
+ timer->timer_cb((uv_timer_t*) timer, 0);
+ }
+}
+
+
+static DWORD uv_get_poll_timeout() {
+ uv_timer_t* timer;
+ int64_t delta;
+
+ /* Check if there are any running timers */
+ timer = RB_MIN(uv_timer_tree_s, &uv_timers_);
+ if (timer) {
+ uv_update_time();
+
+ delta = timer->due - uv_now_;
+ if (delta >= UINT_MAX) {
+ /* Can't have a timeout greater than UINT_MAX, and a timeout value of */
+ /* UINT_MAX means infinite, so that's no good either. */
+ return UINT_MAX - 1;
+ } else if (delta < 0) {
+ /* Negative timeout values are not allowed */
+ return 0;
+ } else {
+ return (DWORD)delta;
+ }
+ } else {
+ /* No timers */
+ return INFINITE;
+ }
+}
+
+
+static void uv_poll() {
+ BOOL success;
+ DWORD bytes;
+ ULONG_PTR key;
+ OVERLAPPED* overlapped;
+ uv_req_t* req;
+
+ success = GetQueuedCompletionStatus(uv_iocp_,
+ &bytes,
+ &key,
+ &overlapped,
+ uv_get_poll_timeout());
+
+ uv_update_time();
+
+ if (overlapped) {
+ /* Package was dequeued */
+ req = uv_overlapped_to_req(overlapped);
+
+ if (success) {
+ req->error = uv_ok_;
+ } else {
+ req->error = uv_new_sys_error(GetLastError());
+ }
+
+ uv_insert_pending_req(req);
+
+ } else if (GetLastError() != WAIT_TIMEOUT) {
+ /* Serious error */
+ uv_fatal_error(GetLastError(), "GetQueuedCompletionStatus");
+ }
+}
+
+
+int uv_run() {
+ while (1) {
+ uv_update_time();
+ uv_process_timers();
+
+ /* Terrible: please fix me! */
+ while (uv_refs_ > 0 &&
+ (uv_idle_handles_ || uv_pending_reqs_tail_ || uv_endgame_handles_)) {
+ /* Terrible: please fix me! */
+ while (uv_pending_reqs_tail_ || uv_endgame_handles_) {
+ uv_process_endgames();
+ uv_process_reqs();
+ }
+
+ /* Call idle callbacks */
+ uv_idle_invoke();
+ }
+
+ if (uv_refs_ <= 0) {
+ break;
+ }
+
+ uv_prepare_invoke();
+
+ uv_poll();
+
+ uv_check_invoke();
+ }
+
+ assert(uv_refs_ == 0);
+ return 0;
+}
+
+
+void uv_ref() {
+ uv_refs_++;
+}
+
+
+void uv_unref() {
+ uv_refs_--;
+}
+
+
+int uv_utf16_to_utf8(wchar_t* utf16Buffer, size_t utf16Size, char* utf8Buffer, size_t utf8Size) {
+ return WideCharToMultiByte(CP_UTF8, 0, utf16Buffer, utf16Size, utf8Buffer, utf8Size, NULL, NULL);
+}
+
+int uv_utf8_to_utf16(const char* utf8Buffer, wchar_t* utf16Buffer, size_t utf16Size) {
+ return MultiByteToWideChar(CP_UTF8, 0, utf8Buffer, -1, utf16Buffer, utf16Size);
+}
+
+
+int uv_exepath(char* buffer, size_t* size) {
+ int retVal;
+ size_t utf16Size;
+ wchar_t* utf16Buffer;
+
+ if (!buffer || !size) {
+ return -1;
+ }
+
+ utf16Buffer = (wchar_t*)malloc(sizeof(wchar_t) * *size);
+ if (!utf16Buffer) {
+ retVal = -1;
+ goto done;
+ }
+
+ /* Get the path as UTF-16 */
+ utf16Size = GetModuleFileNameW(NULL, utf16Buffer, *size - 1);
+ if (utf16Size <= 0) {
+ uv_set_sys_error(GetLastError());
+ retVal = -1;
+ goto done;
+ }
+
+ utf16Buffer[utf16Size] = L'\0';
+
+ /* Convert to UTF-8 */
+ *size = uv_utf16_to_utf8(utf16Buffer, utf16Size, buffer, *size);
+ if (!*size) {
+ uv_set_sys_error(GetLastError());
+ retVal = -1;
+ goto done;
+ }
+
+ buffer[*size] = '\0';
+ retVal = 0;
+
+done:
+ if (utf16Buffer) {
+ free(utf16Buffer);
+ }
+
+ return retVal;
+}
+
+
+uint64_t uv_hrtime(void) {
+ assert(0 && "implement me");
+}
+
+
+/* thread pool callback when socket is signalled */
+VOID CALLBACK uv_ares_socksignal_tp(void* parameter, BOOLEAN timerfired) {
+ WSANETWORKEVENTS network_events;
+ uv_ares_task_t* sockhandle;
+ uv_ares_action_t* selhandle;
+ uv_req_t* uv_ares_req;
+
+ assert(parameter != NULL);
+
+ if (parameter != NULL) {
+ sockhandle = (uv_ares_task_t*)parameter;
+
+ /* clear socket status for this event */
+ /* do not fail if error, thread may run after socket close */
+ /* The code assumes that c-ares will write all pending data in the callback,
+ unless the socket would block. We can clear the state here to avoid unecessary
+ signals. */
+ WSAEnumNetworkEvents(sockhandle->sock, sockhandle->h_event, &network_events);
+
+ /* setup new handle */
+ selhandle = (uv_ares_action_t*)malloc(sizeof(uv_ares_action_t));
+ if (selhandle == NULL) {
+ uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
+ }
+ selhandle->type = UV_ARES;
+ selhandle->close_cb = NULL;
+ selhandle->data = sockhandle->data;
+ selhandle->sock = sockhandle->sock;
+ selhandle->read = (network_events.lNetworkEvents & (FD_READ | FD_CONNECT)) ? 1 : 0;
+ selhandle->write = (network_events.lNetworkEvents & (FD_WRITE | FD_CONNECT)) ? 1 : 0;
+
+ uv_ares_req = &selhandle->ares_req;
+ uv_req_init(uv_ares_req, (uv_handle_t*)selhandle, NULL);
+ uv_ares_req->type = UV_WAKEUP;
+
+ /* post ares needs to called */
+ if (!PostQueuedCompletionStatus(uv_iocp_,
+ 0,
+ 0,
+ &uv_ares_req->overlapped)) {
+ uv_fatal_error(GetLastError(), "PostQueuedCompletionStatus");
+ }
+ }
+}
+
+/* callback from ares when socket operation is started */
+void uv_ares_sockstate_cb(void *data, ares_socket_t sock, int read, int write) {
+ /* look to see if we have a handle for this socket in our list */
+ uv_ares_task_t* uv_handle_ares = uv_find_ares_handle(sock);
+ uv_ares_channel_t* uv_ares_data_ptr = (uv_ares_channel_t*)data;
+
+ struct timeval tv;
+ struct timeval* tvptr;
+ int timeoutms = 0;
+
+ if (read == 0 && write == 0) {
+ /* if read and write are 0, cleanup existing data */
+ /* The code assumes that c-ares does a callback with read = 0 and write = 0
+ when the socket is closed. After we recieve this we stop monitoring the socket. */
+ if (uv_handle_ares != NULL) {
+ uv_req_t* uv_ares_req;
+
+ uv_handle_ares->h_close_event = CreateEvent(NULL, FALSE, FALSE, NULL);
+ /* remove Wait */
+ if (uv_handle_ares->h_wait) {
+ UnregisterWaitEx(uv_handle_ares->h_wait, uv_handle_ares->h_close_event);
+ uv_handle_ares->h_wait = NULL;
+ }
+
+ /* detach socket from the event */
+ WSAEventSelect(sock, NULL, 0);
+ if (uv_handle_ares->h_event != WSA_INVALID_EVENT) {
+ WSACloseEvent(uv_handle_ares->h_event);
+ uv_handle_ares->h_event = WSA_INVALID_EVENT;
+ }
+ /* remove handle from list */
+ uv_remove_ares_handle(uv_handle_ares);
+
+ /* Post request to cleanup the Task */
+ uv_ares_req = &uv_handle_ares->ares_req;
+ uv_req_init(uv_ares_req, (uv_handle_t*)uv_handle_ares, NULL);
+ uv_ares_req->type = UV_WAKEUP;
+
+ /* post ares done with socket - finish cleanup when all threads done. */
+ if (!PostQueuedCompletionStatus(uv_iocp_,
+ 0,
+ 0,
+ &uv_ares_req->overlapped)) {
+ uv_fatal_error(GetLastError(), "PostQueuedCompletionStatus");
+ }
+ } else {
+ assert(0);
+ uv_fatal_error(ERROR_INVALID_DATA, "ares_SockStateCB");
+ }
+ } else {
+ if (uv_handle_ares == NULL) {
+ /* setup new handle */
+ /* The code assumes that c-ares will call us when it has an open socket.
+ We need to call into c-ares when there is something to read,
+ or when it becomes writable. */
+ uv_handle_ares = (uv_ares_task_t*)malloc(sizeof(uv_ares_task_t));
+ if (uv_handle_ares == NULL) {
+ uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
+ }
+ uv_handle_ares->type = UV_ARES_TASK;
+ uv_handle_ares->close_cb = NULL;
+ uv_handle_ares->data = uv_ares_data_ptr;
+ uv_handle_ares->sock = sock;
+ uv_handle_ares->h_wait = NULL;
+ uv_handle_ares->flags = 0;
+
+ /* create an event to wait on socket signal */
+ uv_handle_ares->h_event = WSACreateEvent();
+ if (uv_handle_ares->h_event == WSA_INVALID_EVENT) {
+ uv_fatal_error(WSAGetLastError(), "WSACreateEvent");
+ }
+
+ /* tie event to socket */
+ if (SOCKET_ERROR == WSAEventSelect(sock, uv_handle_ares->h_event, FD_READ | FD_WRITE | FD_CONNECT)) {
+ uv_fatal_error(WSAGetLastError(), "WSAEventSelect");
+ }
+
+ /* add handle to list */
+ uv_add_ares_handle(uv_handle_ares);
+ uv_refs_++;
+
+ /*
+ * we have a single polling timer for all ares sockets.
+ * This is preferred to using ares_timeout. See ares_timeout.c warning.
+ * if timer is not running start it, and keep socket count
+ */
+ if (uv_ares_data_ptr->activesockets == 0) {
+ uv_timer_init(&uv_ares_data_ptr->pollingtimer);
+ uv_timer_start(&uv_ares_data_ptr->pollingtimer, uv_ares_poll, 1000L, 1000L);
+ }
+ uv_ares_data_ptr->activesockets++;
+
+ /* specify thread pool function to call when event is signaled */
+ if (RegisterWaitForSingleObject(&uv_handle_ares->h_wait,
+ uv_handle_ares->h_event,
+ uv_ares_socksignal_tp,
+ (void*)uv_handle_ares,
+ INFINITE,
+ WT_EXECUTEINWAITTHREAD) == 0) {
+ uv_fatal_error(GetLastError(), "RegisterWaitForSingleObject");
+ }
+ } else {
+ /* found existing handle. */
+ assert(uv_handle_ares->type == UV_ARES_TASK);
+ assert(uv_handle_ares->data != NULL);
+ assert(uv_handle_ares->h_event != WSA_INVALID_EVENT);
+ }
+ }
+}
+
+/* called via uv_poll when ares completion port signaled */
+void uv_ares_process(uv_ares_action_t* handle, uv_req_t* req) {
+ uv_ares_channel_t* uv_ares_data_ptr = (uv_ares_channel_t*)handle->data;
+
+ ares_process_fd(uv_ares_data_ptr->channel,
+ handle->read ? handle->sock : INVALID_SOCKET,
+ handle->write ? handle->sock : INVALID_SOCKET);
+
+ /* release handle for select here */
+ free(handle);
+}
+
+/* called via uv_poll when ares is finished with socket */
+void uv_ares_task_cleanup(uv_ares_task_t* handle, uv_req_t* req) {
+ /* check for event complete without waiting */
+ unsigned int signaled = WaitForSingleObject(handle->h_close_event, 0);
+
+ if (signaled != WAIT_TIMEOUT) {
+ uv_ares_channel_t* uv_ares_data_ptr = (uv_ares_channel_t*)handle->data;
+
+ uv_refs_--;
+
+ /* close event handle and free uv handle memory */
+ CloseHandle(handle->h_close_event);
+ free(handle);
+
+ /* decrement active count. if it becomes 0 stop polling */
+ if (uv_ares_data_ptr->activesockets > 0) {
+ uv_ares_data_ptr->activesockets--;
+ if (uv_ares_data_ptr->activesockets == 0) {
+ uv_close((uv_handle_t*)&uv_ares_data_ptr->pollingtimer, NULL);
+ }
+ }
+ } else {
+ /* stil busy - repost and try again */
+ if (!PostQueuedCompletionStatus(uv_iocp_,
+ 0,
+ 0,
+ &req->overlapped)) {
+ uv_fatal_error(GetLastError(), "PostQueuedCompletionStatus");
+ }
+ }
+}
+
+/* periodically call ares to check for timeouts */
+void uv_ares_poll(uv_timer_t* handle, int status) {
+ if (uv_ares_data.channel != NULL && uv_ares_data.activesockets > 0) {
+ ares_process_fd(uv_ares_data.channel, ARES_SOCKET_BAD, ARES_SOCKET_BAD);
+ }
+}
+
+
+/* set ares SOCK_STATE callback to our handler */
+int uv_ares_init_options(ares_channel *channelptr,
+ struct ares_options *options,
+ int optmask) {
+ int rc;
+
+ /* only allow single init at a time */
+ if (uv_ares_data.channel != NULL) {
+ return UV_EALREADY;
+ }
+
+ /* set our callback as an option */
+ options->sock_state_cb = uv_ares_sockstate_cb;
+ options->sock_state_cb_data = &uv_ares_data;
+ optmask |= ARES_OPT_SOCK_STATE_CB;
+
+ /* We do the call to ares_init_option for caller. */
+ rc = ares_init_options(channelptr, options, optmask);
+
+ /* if success, save channel */
+ if (rc == ARES_SUCCESS) {
+ uv_ares_data.channel = *channelptr;
+ }
+
+ return rc;
+}
+
+
+/* release memory */
+void uv_ares_destroy(ares_channel channel) {
+ /* only allow destroy if did init */
+ if (uv_ares_data.channel != NULL) {
+ ares_destroy(channel);
+ uv_ares_data.channel = NULL;
+ }
+}
+
+
+/*
+ * getaddrinfo error code mapping
+ * Falls back to uv_translate_sys_error if no match
+ */
+
+static uv_err_code uv_translate_eai_error(int eai_errno) {
+ switch (eai_errno) {
+ case ERROR_SUCCESS: return UV_OK;
+ case EAI_BADFLAGS: return UV_EBADF;
+ case EAI_FAIL: return UV_EFAULT;
+ case EAI_FAMILY: return UV_EAIFAMNOSUPPORT;
+ case EAI_MEMORY: return UV_ENOMEM;
+ case EAI_NONAME: return UV_EAINONAME;
+ case EAI_AGAIN: return UV_EAGAIN;
+ case EAI_SERVICE: return UV_EAISERVICE;
+ case EAI_SOCKTYPE: return UV_EAISOCKTYPE;
+ default: return uv_translate_sys_error(eai_errno);
+ }
+}
+
+
+/* getaddrinfo worker thread implementation */
+static DWORD WINAPI getaddrinfo_thread_proc(void* parameter) {
+ uv_getaddrinfo_t* handle = (uv_getaddrinfo_t*)parameter;
+ int ret;
+
+ assert(handle != NULL);
+
+ if (handle != NULL) {
+ /* call OS function on this thread */
+ ret = GetAddrInfoW(handle->node, handle->service, handle->hints, &handle->res);
+ handle->retcode = ret;
+
+ /* post getaddrinfo completed */
+ if (!PostQueuedCompletionStatus(uv_iocp_,
+ 0,
+ 0,
+ &handle->getadddrinfo_req.overlapped)) {
+ uv_fatal_error(GetLastError(), "PostQueuedCompletionStatus");
+ }
+ }
+
+ return 0;
+}
+
+
+/*
+ * Called from uv_run when complete. Call user specified callback
+ * then free returned addrinfo
+ * Returned addrinfo strings are converted from UTF-16 to UTF-8.
+ *
+ * To minimize allocation we calculate total size required,
+ * and copy all structs and referenced strings into the one block.
+ * Each size calculation is adjusted to avoid unaligned pointers.
+ */
+static void uv_getaddrinfo_done(uv_getaddrinfo_t* handle, uv_req_t* req) {
+ int addrinfo_len = 0;
+ int name_len = 0;
+ size_t addrinfo_struct_len = ALIGNED_SIZE(sizeof(struct addrinfo));
+ struct addrinfoW* addrinfow_ptr;
+ struct addrinfo* addrinfo_ptr;
+ char* alloc_ptr = NULL;
+ char* cur_ptr = NULL;
+ uv_err_code uv_ret;
+
+ /* release input parameter memory */
+ if (handle->alloc != NULL) {
+ free(handle->alloc);
+ handle->alloc = NULL;
+ }
+
+ uv_ret = uv_translate_eai_error(handle->retcode);
+ if (handle->retcode == 0) {
+ /* convert addrinfoW to addrinfo */
+ /* first calculate required length */
+ addrinfow_ptr = handle->res;
+ while (addrinfow_ptr != NULL) {
+ addrinfo_len += addrinfo_struct_len + ALIGNED_SIZE(addrinfow_ptr->ai_addrlen);
+ if (addrinfow_ptr->ai_canonname != NULL) {
+ name_len = uv_utf16_to_utf8(addrinfow_ptr->ai_canonname, -1, NULL, 0);
+ if (name_len == 0) {
+ uv_ret = uv_translate_sys_error(GetLastError());
+ goto complete;
+ }
+ addrinfo_len += ALIGNED_SIZE(name_len);
+ }
+ addrinfow_ptr = addrinfow_ptr->ai_next;
+ }
+
+ /* allocate memory for addrinfo results */
+ alloc_ptr = (char*)malloc(addrinfo_len);
+
+ /* do conversions */
+ if (alloc_ptr != NULL) {
+ cur_ptr = alloc_ptr;
+ addrinfow_ptr = handle->res;
+
+ while (addrinfow_ptr != NULL) {
+ /* copy addrinfo struct data */
+ assert(cur_ptr + addrinfo_struct_len <= alloc_ptr + addrinfo_len);
+ addrinfo_ptr = (struct addrinfo*)cur_ptr;
+ addrinfo_ptr->ai_family = addrinfow_ptr->ai_family;
+ addrinfo_ptr->ai_socktype = addrinfow_ptr->ai_socktype;
+ addrinfo_ptr->ai_protocol = addrinfow_ptr->ai_protocol;
+ addrinfo_ptr->ai_flags = addrinfow_ptr->ai_flags;
+ addrinfo_ptr->ai_addrlen = addrinfow_ptr->ai_addrlen;
+ addrinfo_ptr->ai_canonname = NULL;
+ addrinfo_ptr->ai_addr = NULL;
+ addrinfo_ptr->ai_next = NULL;
+
+ cur_ptr += addrinfo_struct_len;
+
+ /* copy sockaddr */
+ if (addrinfo_ptr->ai_addrlen > 0) {
+ assert(cur_ptr + addrinfo_ptr->ai_addrlen <= alloc_ptr + addrinfo_len);
+ memcpy(cur_ptr, addrinfow_ptr->ai_addr, addrinfo_ptr->ai_addrlen);
+ addrinfo_ptr->ai_addr = (struct sockaddr*)cur_ptr;
+ cur_ptr += ALIGNED_SIZE(addrinfo_ptr->ai_addrlen);
+ }
+
+ /* convert canonical name to UTF-8 */
+ if (addrinfow_ptr->ai_canonname != NULL) {
+ name_len = uv_utf16_to_utf8(addrinfow_ptr->ai_canonname, -1, NULL, 0);
+ assert(name_len > 0);
+ assert(cur_ptr + name_len <= alloc_ptr + addrinfo_len);
+ name_len = uv_utf16_to_utf8(addrinfow_ptr->ai_canonname, -1, cur_ptr, name_len);
+ assert(name_len > 0);
+ addrinfo_ptr->ai_canonname = cur_ptr;
+ cur_ptr += ALIGNED_SIZE(name_len);
+ }
+ assert(cur_ptr <= alloc_ptr + addrinfo_len);
+
+ /* set next ptr */
+ addrinfow_ptr = addrinfow_ptr->ai_next;
+ if (addrinfow_ptr != NULL) {
+ addrinfo_ptr->ai_next = (struct addrinfo*)cur_ptr;
+ }
+ }
+ } else {
+ uv_ret = UV_ENOMEM;
+ }
+
+ }
+
+ /* return memory to system */
+ if (handle->res != NULL) {
+ FreeAddrInfoW(handle->res);
+ handle->res = NULL;
+ }
+
+complete:
+ /* finally do callback with converted result */
+ handle->getaddrinfo_cb(handle, uv_ret, (struct addrinfo*)alloc_ptr);
+
+ /* release copied result memory */
+ if (alloc_ptr != NULL) {
+ free(alloc_ptr);
+ }
+
+ uv_refs_--;
+}
+
+
+/*
+ * Entry point for getaddrinfo
+ * we convert the UTF-8 strings to UNICODE
+ * and save the UNICODE string pointers in the handle
+ * We also copy hints so that caller does not need to keep memory until the callback.
+ * return UV_OK if a callback will be made
+ * return error code if validation fails
+ *
+ * To minimize allocation we calculate total size required,
+ * and copy all structs and referenced strings into the one block.
+ * Each size calculation is adjusted to avoid unaligned pointers.
+ */
+int uv_getaddrinfo(uv_getaddrinfo_t* handle,
+ uv_getaddrinfo_cb getaddrinfo_cb,
+ const char* node,
+ const char* service,
+ const struct addrinfo* hints) {
+ int nodesize = 0;
+ int servicesize = 0;
+ int hintssize = 0;
+ char* alloc_ptr = NULL;
+
+ if (handle == NULL || getaddrinfo_cb == NULL ||
+ (node == NULL && service == NULL)) {
+ uv_set_sys_error(WSAEINVAL);
+ goto error;
+ }
+
+ handle->getaddrinfo_cb = getaddrinfo_cb;
+ handle->res = NULL;
+ handle->type = UV_GETADDRINFO;
+
+ /* calculate required memory size for all input values */
+ if (node != NULL) {
+ nodesize = ALIGNED_SIZE(uv_utf8_to_utf16(node, NULL, 0) * sizeof(wchar_t));
+ if (nodesize == 0) {
+ uv_set_sys_error(GetLastError());
+ goto error;
+ }
+ }
+
+ if (service != NULL) {
+ servicesize = ALIGNED_SIZE(uv_utf8_to_utf16(service, NULL, 0) * sizeof(wchar_t));
+ if (servicesize == 0) {
+ uv_set_sys_error(GetLastError());
+ goto error;
+ }
+ }
+ if (hints != NULL) {
+ hintssize = ALIGNED_SIZE(sizeof(struct addrinfoW));
+ }
+
+ /* allocate memory for inputs, and partition it as needed */
+ alloc_ptr = (char*)malloc(nodesize + servicesize + hintssize);
+ if (!alloc_ptr) {
+ uv_set_sys_error(WSAENOBUFS);
+ goto error;
+ }
+
+ /* save alloc_ptr now so we can free if error */
+ handle->alloc = (void*)alloc_ptr;
+
+ /* convert node string to UTF16 into allocated memory and save pointer in handle */
+ if (node != NULL) {
+ handle->node = (wchar_t*)alloc_ptr;
+ if (uv_utf8_to_utf16(node, (wchar_t*)alloc_ptr, nodesize / sizeof(wchar_t)) == 0) {
+ uv_set_sys_error(GetLastError());
+ goto error;
+ }
+ alloc_ptr += nodesize;
+ } else {
+ handle->node = NULL;
+ }
+
+ /* convert service string to UTF16 into allocated memory and save pointer in handle */
+ if (service != NULL) {
+ handle->service = (wchar_t*)alloc_ptr;
+ if (uv_utf8_to_utf16(service, (wchar_t*)alloc_ptr, servicesize / sizeof(wchar_t)) == 0) {
+ uv_set_sys_error(GetLastError());
+ goto error;
+ }
+ alloc_ptr += servicesize;
+ } else {
+ handle->service = NULL;
+ }
+
+ /* copy hints to allocated memory and save pointer in handle */
+ if (hints != NULL) {
+ handle->hints = (struct addrinfoW*)alloc_ptr;
+ handle->hints->ai_family = hints->ai_family;
+ handle->hints->ai_socktype = hints->ai_socktype;
+ handle->hints->ai_protocol = hints->ai_protocol;
+ handle->hints->ai_flags = hints->ai_flags;
+ handle->hints->ai_addrlen = 0;
+ handle->hints->ai_canonname = NULL;
+ handle->hints->ai_addr = NULL;
+ handle->hints->ai_next = NULL;
+ } else {
+ handle->hints = NULL;
+ }
+
+ /* init request for Post handling */
+ uv_req_init(&handle->getadddrinfo_req, (uv_handle_t*)handle, NULL);
+ handle->getadddrinfo_req.type = UV_WAKEUP;
+
+ /* Ask thread to run. Treat this as a long operation */
+ if (QueueUserWorkItem(&getaddrinfo_thread_proc, handle, WT_EXECUTELONGFUNCTION) == 0) {
+ uv_set_sys_error(GetLastError());
+ goto error;
+ }
+
+ uv_refs_++;
+
+ return 0;
+
+error:
+ if (handle != NULL && handle->alloc != NULL) {
+ free(handle->alloc);
+ }
+ return -1;
+}
+
projects / platform / upstream / nodejs.git / commitdiff