3 dnl Version not hardcoded here. Fetched later from ares_version.h
5 [c-ares mailing list => http://cool.haxx.se/mailman/listinfo/c-ares])
7 CARES_OVERRIDE_AUTOCONF
9 AC_CONFIG_SRCDIR([ares_ipv6.h])
10 AM_CONFIG_HEADER([config.h])
13 CARES_CHECK_OPTION_DEBUG
14 CARES_CHECK_OPTION_OPTIMIZE
15 CARES_CHECK_OPTION_WARNINGS
17 dnl SED is mandatory for configure process and libtool.
18 dnl Set it now, allowing it to be changed later.
19 AC_PATH_PROG([SED], [sed], [not_found],
20 [$PATH:/usr/bin:/usr/local/bin])
21 if test -z "$SED" || test "$SED" = "not_found"; then
22 AC_MSG_ERROR([sed not found in PATH. Cannot continue without sed.])
26 dnl GREP is mandatory for configure process and libtool.
27 dnl Set it now, allowing it to be changed later.
28 AC_PATH_PROG([GREP], [grep], [not_found],
29 [$PATH:/usr/bin:/usr/local/bin])
30 if test -z "$GREP" || test "$GREP" = "not_found"; then
31 AC_MSG_ERROR([grep not found in PATH. Cannot continue without grep.])
35 dnl EGREP is mandatory for configure process and libtool.
36 dnl Set it now, allowing it to be changed later.
37 if echo a | ($GREP -E '(a|b)') >/dev/null 2>&1; then
38 AC_MSG_CHECKING([for egrep])
40 AC_MSG_RESULT([$EGREP])
42 AC_PATH_PROG([EGREP], [egrep], [not_found],
43 [$PATH:/usr/bin:/usr/local/bin])
45 if test -z "$EGREP" || test "$EGREP" = "not_found"; then
46 AC_MSG_ERROR([egrep not found in PATH. Cannot continue without egrep.])
50 dnl AR is mandatory for configure process and libtool.
51 dnl This is target dependant, so check it as a tool.
52 AC_PATH_TOOL([AR], [ar], [not_found],
53 [$PATH:/usr/bin:/usr/local/bin])
54 if test -z "$AR" || test "$AR" = "not_found"; then
55 AC_MSG_ERROR([ar not found in PATH. Cannot continue without ar.])
59 dnl Fetch c-ares version from ares_version.h
60 VERSION=`$SED -ne 's/^#define ARES_VERSION_STR "\(.*\)"/\1/p' ${srcdir}/ares_version.h`
61 AM_INIT_AUTOMAKE([c-ares], [$VERSION])
62 AC_MSG_CHECKING([c-ares version])
63 AC_MSG_RESULT([$VERSION])
66 dnl Detect the canonical host and target build environment
70 dnl Get system canonical name
71 AC_DEFINE_UNQUOTED(OS, "${host}", [cpu-machine-OS])
77 dnl This defines _ALL_SOURCE for AIX
78 CARES_CHECK_AIX_ALL_SOURCE
80 dnl Our configure and build reentrant settings
81 CARES_CONFIGURE_REENTRANT
83 dnl check for how to do large files
88 AC_DEFINE(ETC_INET, 1, [if a /etc/inet dir is being used])
92 dnl support building of Windows DLLs
95 CARES_PROCESS_DEBUG_BUILD_OPTS
97 AM_CONDITIONAL(DEBUGBUILD, test x$want_debug = xyes)
98 AM_CONDITIONAL(CURLDEBUG, test x$want_debug = xyes)
100 dnl force libtool to build static libraries with PIC on AMD64-Linux & FreeBSD
101 AC_MSG_CHECKING([if arch-OS host is AMD64-Linux/FreeBSD (to build static libraries with PIC)])
103 x86_64*linux*|amd64*freebsd*|ia64*freebsd*)
115 AC_MSG_CHECKING([if we need -no-undefined])
117 *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
118 need_no_undefined=yes
124 AC_MSG_RESULT($need_no_undefined)
125 AM_CONDITIONAL(NO_UNDEFINED, test x$need_no_undefined = xyes)
127 dnl **********************************************************************
128 dnl platform/compiler/architecture specific checks/flags
129 dnl **********************************************************************
132 CARES_SET_COMPILER_BASIC_OPTS
133 CARES_SET_COMPILER_DEBUG_OPTS
134 CARES_SET_COMPILER_OPTIMIZE_OPTS
135 CARES_SET_COMPILER_WARNING_OPTS
139 x86_64*linux*|amd64*freebsd*|ia64*freebsd*)
141 if test "$compiler_id" = "INTEL_UNIX_C"; then
143 if test "$compiler_num" -ge "900" &&
144 test "$compiler_num" -lt "1000"; then
146 CFLAGS="$CFLAGS -i-dynamic"
149 if test "$compiler_num" -ge "1000"; then
150 dnl icc 10.X or later
151 CFLAGS="$CFLAGS -shared-intel"
159 CURL_CHECK_COMPILER_HALT_ON_ERROR
160 CURL_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE
162 dnl **********************************************************************
163 dnl Compilation based checks should not be done before this point.
164 dnl **********************************************************************
166 dnl **********************************************************************
167 dnl Make sure that our checks for headers windows.h winsock.h winsock2.h
168 dnl and ws2tcpip.h take precedence over any other further checks which
169 dnl could be done later using AC_CHECK_HEADER or AC_CHECK_HEADERS for
170 dnl this specific header files. And do them before its results are used.
171 dnl **********************************************************************
173 CURL_CHECK_HEADER_WINDOWS
174 CURL_CHECK_NATIVE_WINDOWS
175 case X-"$ac_cv_native_windows" in
177 CURL_CHECK_HEADER_WINSOCK
178 CURL_CHECK_HEADER_WINSOCK2
179 CURL_CHECK_HEADER_WS2TCPIP
182 ac_cv_header_winsock_h="no"
183 ac_cv_header_winsock2_h="no"
184 ac_cv_header_ws2tcpip_h="no"
188 dnl **********************************************************************
189 dnl Checks for libraries.
190 dnl **********************************************************************
192 dnl gethostbyname without lib or in the nsl lib?
193 AC_CHECK_FUNC(gethostbyname,
194 [HAVE_GETHOSTBYNAME="1"
196 [ AC_CHECK_LIB(nsl, gethostbyname,
197 [HAVE_GETHOSTBYNAME="1"
202 if test "$HAVE_GETHOSTBYNAME" != "1"
204 dnl gethostbyname in the socket lib?
205 AC_CHECK_LIB(socket, gethostbyname,
206 [HAVE_GETHOSTBYNAME="1"
207 LIBS="$LIBS -lsocket"
211 dnl At least one system has been identified to require BOTH nsl and socket
212 dnl libs at the same time to link properly.
213 if test "$HAVE_GETHOSTBYNAME" != "1"
215 AC_MSG_CHECKING([for gethostbyname with both nsl and socket libs])
216 my_ac_save_LIBS=$LIBS
217 LIBS="-lnsl -lsocket $LIBS"
225 HAVE_GETHOSTBYNAME="1"
228 LIBS=$my_ac_save_LIBS
232 if test "$HAVE_GETHOSTBYNAME" != "1"
234 dnl This is for winsock systems
235 if test "$ac_cv_header_windows_h" = "yes"; then
236 if test "$ac_cv_header_winsock_h" = "yes"; then
239 winsock_LIB="-lwinsock"
242 winsock_LIB="-lwsock32"
246 if test "$ac_cv_header_winsock2_h" = "yes"; then
247 winsock_LIB="-lws2_32"
249 if test ! -z "$winsock_LIB"; then
250 my_ac_save_LIBS=$LIBS
251 LIBS="$winsock_LIB $LIBS"
252 AC_MSG_CHECKING([for gethostbyname in $winsock_LIB])
255 #ifdef HAVE_WINDOWS_H
256 #ifndef WIN32_LEAN_AND_MEAN
257 #define WIN32_LEAN_AND_MEAN
260 #ifdef HAVE_WINSOCK2_H
261 #include <winsock2.h>
263 #ifdef HAVE_WINSOCK_H
269 gethostbyname("www.dummysite.com");
273 HAVE_GETHOSTBYNAME="1"
277 LIBS=$my_ac_save_LIBS
283 if test "$HAVE_GETHOSTBYNAME" != "1"
285 dnl This is for Minix 3.1
286 AC_MSG_CHECKING([for gethostbyname for Minix 3])
289 /* Older Minix versions may need <net/gen/netdb.h> here instead */
292 gethostbyname("www.dummysite.com");
296 HAVE_GETHOSTBYNAME="1"
302 if test "$HAVE_GETHOSTBYNAME" != "1"
304 dnl This is for eCos with a stubbed DNS implementation
305 AC_MSG_CHECKING([for gethostbyname for eCos])
311 gethostbyname("www.dummysite.com");
315 HAVE_GETHOSTBYNAME="1"
321 if test "$HAVE_GETHOSTBYNAME" != "1"
323 dnl gethostbyname in the net lib - for BeOS
324 AC_CHECK_LIB(net, gethostbyname,
325 [HAVE_GETHOSTBYNAME="1"
331 if test "$HAVE_GETHOSTBYNAME" = "1"; then
332 AC_DEFINE(HAVE_GETHOSTBYNAME, 1, [If you have gethostbyname])
334 AC_MSG_ERROR([couldn't find libraries for gethostbyname()])
338 AC_CHECK_FUNC(strcasecmp, , [ AC_CHECK_LIB(resolve, strcasecmp) ])
340 if test "$ac_cv_lib_resolve_strcasecmp" = "$ac_cv_func_strcasecmp"; then
341 AC_CHECK_LIB(resolve, strcasecmp,
342 [LIBS="-lresolve $LIBS"],
346 ac_cv_func_strcasecmp="no"
349 AC_CHECK_FUNC(connect, , [ AC_CHECK_LIB(socket, connect) ])
351 dnl **********************************************************************
352 dnl In case that function clock_gettime with monotonic timer is available,
353 dnl check for additional required libraries.
354 dnl **********************************************************************
355 CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC
357 AC_MSG_CHECKING([whether to use libgcc])
358 AC_ARG_ENABLE(libgcc,
359 AC_HELP_STRING([--enable-libgcc],[use libgcc when linking]),
360 [ case "$enableval" in
372 dnl Default is to try the thread-safe versions of a few functions
375 dnl detect AIX 4.3 or later
376 AC_MSG_CHECKING([AIX 4.3 or later])
378 #if defined(_AIX) && defined(_AIX43)
381 #error "this is not AIX 4.3 or later"
384 [ AC_MSG_RESULT([yes])
387 [ AC_MSG_RESULT([no]) ]
390 AC_ARG_ENABLE(thread,dnl
391 AC_HELP_STRING([--disable-thread],[don't look for thread-safe functions])
392 AC_HELP_STRING([--enable-thread],[look for thread-safe functions]),
393 [ case "$enableval" in
396 AC_MSG_WARN(c-ares will not get built using thread-safe functions)
404 if test X"$OPT_THREAD" = Xoff
406 AC_DEFINE(DISABLED_THREADSAFE, 1,
407 [Set to explicitly specify we don't want to use thread-safe functions])
410 dnl for recent AIX versions, we skip all the thread-safe checks above since
411 dnl they claim a thread-safe libc using the standard API. But there are
412 dnl some functions still not thread-safe. Check for these!
414 dnl Let's hope this split URL remains working:
415 dnl http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/aixprggd/ \
416 dnl genprogc/thread_quick_ref.htm
418 if test "x$RECENTAIX" = "xyes"; then
420 AC_DEFINE(_THREAD_SAFE, 1, [define this if you need it to compile thread-safe code])
425 dnl **********************************************************************
426 dnl Back to "normal" configuring
427 dnl **********************************************************************
429 dnl Checks for header files.
432 CURL_CHECK_HEADER_MALLOC
434 dnl check for a few basic system headers we need
452 arpa/nameser_compat.h \
454 dnl to do if not found
460 #ifdef HAVE_SYS_TYPES_H
461 #include <sys/types.h>
463 #ifdef HAVE_SYS_TIME_H
464 #include <sys/time.h>
466 dnl We do this default-include simply to make sure that the nameser_compat.h
467 dnl header *REALLY* can be include after the new nameser.h. It seems AIX 5.1
468 dnl (and others?) is not designed to allow this.
469 #ifdef HAVE_ARPA_NAMESER_H
470 #include <arpa/nameser.h>
473 dnl *Sigh* these are needed in order for net/if.h to get properly detected.
474 #ifdef HAVE_SYS_SOCKET_H
475 #include <sys/socket.h>
477 #ifdef HAVE_NETINET_IN_H
478 #include <netinet/in.h>
483 dnl Checks for typedefs, structures, and compiler characteristics.
487 CURL_CHECK_STRUCT_TIMEVAL
489 AC_CHECK_SIZEOF(size_t)
490 AC_CHECK_SIZEOF(long)
491 AC_CHECK_SIZEOF(time_t)
493 AC_CHECK_TYPE(long long,
494 [AC_DEFINE(HAVE_LONGLONG, 1,
495 [Define to 1 if the compiler supports the 'long long' data type.])]
499 if test "xyes" = "x$longlong"; then
500 AC_MSG_CHECKING([if numberLL works])
501 AC_COMPILE_IFELSE([long long val = 1000LL;],
502 [AC_DEFINE(HAVE_LL, 1, [if your compiler supports LL])]
510 AC_CHECK_TYPE(ssize_t, ,
511 AC_DEFINE(ssize_t, int, [the signed version of size_t]))
513 # check for bool type
514 AC_CHECK_TYPE([bool],[
515 AC_DEFINE(HAVE_BOOL_T, 1,
516 [Define to 1 if bool is an available type.])
518 #ifdef HAVE_SYS_TYPES_H
519 #include <sys/types.h>
521 #ifdef HAVE_STDBOOL_H
526 # Check for socklen_t or equivalent
527 CURL_CHECK_TYPE_SOCKLEN_T
531 TYPE_SOCKADDR_STORAGE
538 CURL_CHECK_FUNC_RECVFROM
540 CURL_CHECK_MSG_NOSIGNAL
542 CARES_CHECK_FUNC_FCNTL
543 CARES_CHECK_FUNC_FREEADDRINFO
544 CARES_CHECK_FUNC_GETADDRINFO
545 CARES_CHECK_FUNC_GETHOSTNAME
546 CARES_CHECK_FUNC_GETSERVBYPORT_R
547 CARES_CHECK_FUNC_INET_NTOP
548 CARES_CHECK_FUNC_INET_PTON
549 CARES_CHECK_FUNC_IOCTL
550 CARES_CHECK_FUNC_IOCTLSOCKET
551 CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL
552 CARES_CHECK_FUNC_SETSOCKOPT
553 CARES_CHECK_FUNC_STRCASECMP
554 CARES_CHECK_FUNC_STRCMPI
555 CARES_CHECK_FUNC_STRDUP
556 CARES_CHECK_FUNC_STRICMP
557 CARES_CHECK_FUNC_STRNCASECMP
558 CARES_CHECK_FUNC_STRNCMPI
559 CARES_CHECK_FUNC_STRNICMP
560 CARES_CHECK_FUNC_WRITEV
563 dnl check for AF_INET6
564 CARES_CHECK_CONSTANT(
567 #ifdef HAVE_WINDOWS_H
568 #ifndef WIN32_LEAN_AND_MEAN
569 #define WIN32_LEAN_AND_MEAN
572 #ifdef HAVE_WINSOCK2_H
573 #include <winsock2.h>
576 #ifdef HAVE_SYS_TYPES_H
577 #include <sys/types.h>
579 #ifdef HAVE_SYS_SOCKET_H
580 #include <sys/socket.h>
584 AC_DEFINE_UNQUOTED(HAVE_PF_INET6,1,[Define to 1 if you have PF_INET6.])
587 dnl check for PF_INET6
588 CARES_CHECK_CONSTANT(
591 #ifdef HAVE_WINDOWS_H
592 #ifndef WIN32_LEAN_AND_MEAN
593 #define WIN32_LEAN_AND_MEAN
596 #ifdef HAVE_WINSOCK2_H
597 #include <winsock2.h>
600 #ifdef HAVE_SYS_TYPES_H
601 #include <sys/types.h>
603 #ifdef HAVE_SYS_SOCKET_H
604 #include <sys/socket.h>
608 AC_DEFINE_UNQUOTED(HAVE_AF_INET6,1,[Define to 1 if you have AF_INET6.])
612 dnl check for the in6_addr structure
616 #ifdef HAVE_WINDOWS_H
617 #ifndef WIN32_LEAN_AND_MEAN
618 #define WIN32_LEAN_AND_MEAN
621 #ifdef HAVE_WINSOCK2_H
622 #include <winsock2.h>
623 #ifdef HAVE_WS2TCPIP_H
624 #include <ws2tcpip.h>
628 #ifdef HAVE_SYS_TYPES_H
629 #include <sys/types.h>
631 #ifdef HAVE_NETINET_IN_H
632 #include <netinet/in.h>
636 AC_DEFINE_UNQUOTED(HAVE_STRUCT_IN6_ADDR,1,[Define to 1 if you have struct in6_addr.])
639 dnl check for the sockaddr_in6 structure
643 #ifdef HAVE_WINDOWS_H
644 #ifndef WIN32_LEAN_AND_MEAN
645 #define WIN32_LEAN_AND_MEAN
648 #ifdef HAVE_WINSOCK2_H
649 #include <winsock2.h>
650 #ifdef HAVE_WS2TCPIP_H
651 #include <ws2tcpip.h>
655 #ifdef HAVE_SYS_TYPES_H
656 #include <sys/types.h>
658 #ifdef HAVE_NETINET_IN_H
659 #include <netinet/in.h>
663 AC_DEFINE_UNQUOTED(HAVE_STRUCT_SOCKADDR_IN6,1,
664 [Define to 1 if you have struct sockaddr_in6.]) ac_have_sockaddr_in6=yes
667 AC_CHECK_MEMBER(struct sockaddr_in6.sin6_scope_id,
668 AC_DEFINE_UNQUOTED(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID,1,
669 [Define to 1 if your struct sockaddr_in6 has sin6_scope_id.])
673 #ifdef HAVE_WINDOWS_H
674 #ifndef WIN32_LEAN_AND_MEAN
675 #define WIN32_LEAN_AND_MEAN
678 #ifdef HAVE_WINSOCK2_H
679 #include <winsock2.h>
680 #ifdef HAVE_WS2TCPIP_H
681 #include <ws2tcpip.h>
685 #ifdef HAVE_SYS_TYPES_H
686 #include <sys/types.h>
688 #ifdef HAVE_NETINET_IN_H
689 #include <netinet/in.h>
694 dnl check for the addrinfo structure
695 AC_CHECK_MEMBER(struct addrinfo.ai_flags,
696 AC_DEFINE_UNQUOTED(HAVE_STRUCT_ADDRINFO,1,
697 [Define to 1 if you have struct addrinfo.]),,
700 #ifdef HAVE_WINDOWS_H
701 #ifndef WIN32_LEAN_AND_MEAN
702 #define WIN32_LEAN_AND_MEAN
705 #ifdef HAVE_WINSOCK2_H
706 #include <winsock2.h>
707 #ifdef HAVE_WS2TCPIP_H
708 #include <ws2tcpip.h>
712 #ifdef HAVE_SYS_TYPES_H
713 #include <sys/types.h>
715 #ifdef HAVE_NETINET_IN_H
716 #include <netinet/in.h>
718 #ifdef HAVE_SYS_SOCKET_H
719 #include <sys/socket.h>
729 AC_CHECK_FUNCS([bitncmp \
735 AC_MSG_CHECKING([deeper for $func])
743 eval "ac_cv_func_$func=yes"
744 AC_DEFINE_UNQUOTED([AS_TR_CPP([HAVE_$func])], [1],
745 [Define to 1 if you have the $func function.])
747 AC_MSG_RESULT([but still no])
752 dnl Check for inet_net_pton
753 AC_CHECK_FUNCS(inet_net_pton)
754 dnl Again, some systems have it, but not IPv6
755 if test "$ac_cv_func_inet_net_pton" = "yes" ; then
756 AC_MSG_CHECKING(if inet_net_pton supports IPv6)
759 #ifdef HAVE_SYS_TYPES_H
760 #include <sys/types.h>
762 #ifdef HAVE_SYS_SOCKET_H
763 #include <sys/socket.h>
765 #ifdef HAVE_NETINET_IN_H
766 #include <netinet/in.h>
770 struct in6_addr addr6;
771 if (inet_net_pton(AF_INET6, "::1", &addr6, sizeof(addr6)) < 1)
778 AC_DEFINE_UNQUOTED(HAVE_INET_NET_PTON_IPV6,1,[Define to 1 if inet_net_pton supports IPv6.])
779 ], AC_MSG_RESULT(no),AC_MSG_RESULT(no))
783 AC_CHECK_SIZEOF(struct in6_addr, ,
786 #ifdef HAVE_WINDOWS_H
787 #ifndef WIN32_LEAN_AND_MEAN
788 #define WIN32_LEAN_AND_MEAN
791 #ifdef HAVE_WINSOCK2_H
792 #include <winsock2.h>
793 #ifdef HAVE_WS2TCPIP_H
794 #include <ws2tcpip.h>
798 #ifdef HAVE_SYS_TYPES_H
799 #include <sys/types.h>
801 #ifdef HAVE_SYS_SOCKET_H
802 #include <sys/socket.h>
804 #ifdef HAVE_NETINET_IN_H
805 #include <netinet/in.h>
811 AC_CHECK_SIZEOF(struct in_addr, ,
814 #ifdef HAVE_WINDOWS_H
815 #ifndef WIN32_LEAN_AND_MEAN
816 #define WIN32_LEAN_AND_MEAN
819 #ifdef HAVE_WINSOCK2_H
820 #include <winsock2.h>
821 #ifdef HAVE_WS2TCPIP_H
822 #include <ws2tcpip.h>
826 #ifdef HAVE_SYS_TYPES_H
827 #include <sys/types.h>
829 #ifdef HAVE_SYS_SOCKET_H
830 #include <sys/socket.h>
832 #ifdef HAVE_NETINET_IN_H
833 #include <netinet/in.h>
840 dnl Check if the getnameinfo function is available
841 dnl and get the types of five of its arguments.
842 CURL_CHECK_FUNC_GETNAMEINFO
846 [AC_DEFINE(ARES_BIG_ENDIAN, 1,
847 [define this if ares is built for a big endian system])],
849 [AC_MSG_WARN([couldn't figure out endianess, assuming little endian!])]
852 dnl Check for user-specified random device
854 AC_HELP_STRING([--with-random=FILE],
855 [read randomness from FILE (default=/dev/urandom)]),
856 [ RANDOM_FILE="$withval" ],
858 dnl Check for random device. If we're cross compiling, we can't
859 dnl check, and it's better to assume it doesn't exist than it is
860 dnl to fail on AC_CHECK_FILE or later.
861 if test "$cross_compiling" = "no"; then
862 AC_CHECK_FILE("/dev/urandom", [ RANDOM_FILE="/dev/urandom"] )
864 AC_MSG_WARN([cannot check for /dev/urandom while cross compiling; assuming none])
869 if test -n "$RANDOM_FILE" && test X"$RANDOM_FILE" != Xno ; then
870 AC_SUBST(RANDOM_FILE)
871 AC_DEFINE_UNQUOTED(RANDOM_FILE, "$RANDOM_FILE",
872 [a suitable file/device to read random data from])
875 CARES_CHECK_OPTION_NONBLOCKING
876 CARES_CHECK_NONBLOCKING_SOCKET
878 CARES_PRIVATE_LIBS="$LIBS"
879 AC_SUBST(CARES_PRIVATE_LIBS)
881 dnl squeeze whitespace out of some variables
889 squeeze CARES_PRIVATE_LIBS
891 AC_CONFIG_FILES([Makefile libcares.pc])