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([ares_config.h ares_build.h])
13 CARES_CHECK_OPTION_DEBUG
14 CARES_CHECK_OPTION_OPTIMIZE
15 CARES_CHECK_OPTION_WARNINGS
16 CARES_CHECK_OPTION_CURLDEBUG
17 CARES_CHECK_OPTION_SYMBOL_HIDING
19 CARES_CHECK_PATH_SEPARATOR_REQUIRED
21 dnl SED is mandatory for configure process and libtool.
22 dnl Set it now, allowing it to be changed later.
23 AC_PATH_PROG([SED], [sed], [not_found],
24 [$PATH:/usr/bin:/usr/local/bin])
25 if test -z "$SED" || test "$SED" = "not_found"; then
26 AC_MSG_ERROR([sed not found in PATH. Cannot continue without sed.])
30 dnl GREP is mandatory for configure process and libtool.
31 dnl Set it now, allowing it to be changed later.
32 AC_PATH_PROG([GREP], [grep], [not_found],
33 [$PATH:/usr/bin:/usr/local/bin])
34 if test -z "$GREP" || test "$GREP" = "not_found"; then
35 AC_MSG_ERROR([grep not found in PATH. Cannot continue without grep.])
39 dnl EGREP is mandatory for configure process and libtool.
40 dnl Set it now, allowing it to be changed later.
41 if echo a | ($GREP -E '(a|b)') >/dev/null 2>&1; then
42 AC_MSG_CHECKING([for egrep])
44 AC_MSG_RESULT([$EGREP])
46 AC_PATH_PROG([EGREP], [egrep], [not_found],
47 [$PATH:/usr/bin:/usr/local/bin])
49 if test -z "$EGREP" || test "$EGREP" = "not_found"; then
50 AC_MSG_ERROR([egrep not found in PATH. Cannot continue without egrep.])
54 dnl AR is mandatory for configure process and libtool.
55 dnl This is target dependent, so check it as a tool.
56 AC_PATH_TOOL([AR], [ar], [not_found],
57 [$PATH:/usr/bin:/usr/local/bin])
58 if test -z "$AR" || test "$AR" = "not_found"; then
59 AC_MSG_ERROR([ar not found in PATH. Cannot continue without ar.])
63 dnl Fetch c-ares version from ares_version.h
64 VERSION=`$SED -ne 's/^#define ARES_VERSION_STR "\(.*\)"/\1/p' ${srcdir}/ares_version.h`
65 AM_INIT_AUTOMAKE([c-ares], [$VERSION])
66 AC_MSG_CHECKING([c-ares version])
67 AC_MSG_RESULT([$VERSION])
70 dnl Detect the canonical host and target build environment
74 dnl Get system canonical name
75 AC_DEFINE_UNQUOTED(OS, "${host}", [cpu-machine-OS])
81 dnl This defines _ALL_SOURCE for AIX
82 CARES_CHECK_AIX_ALL_SOURCE
84 dnl Our configure and build reentrant settings
85 CARES_CONFIGURE_THREAD_SAFE
86 CARES_CONFIGURE_REENTRANT
88 dnl check for how to do large files
93 AC_DEFINE(ETC_INET, 1, [if a /etc/inet dir is being used])
97 dnl support building of Windows DLLs
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 CARES_BUILDING_LIBRARY])
118 AC_DEFINE(CARES_BUILDING_LIBRARY, 1, [when building c-ares library])
120 AC_MSG_CHECKING([if we need CARES_STATICLIB])
121 if test "X$enable_shared" = "Xno"
123 AC_DEFINE(CARES_STATICLIB, 1, [when not building a shared library])
134 dnl **********************************************************************
135 dnl platform/compiler/architecture specific checks/flags
136 dnl **********************************************************************
139 CARES_SET_COMPILER_BASIC_OPTS
140 CARES_SET_COMPILER_DEBUG_OPTS
141 CARES_SET_COMPILER_OPTIMIZE_OPTS
142 CARES_SET_COMPILER_WARNING_OPTS
146 x86_64*linux*|amd64*freebsd*|ia64*freebsd*)
148 if test "$compiler_id" = "INTEL_UNIX_C"; then
150 if test "$compiler_num" -ge "900" &&
151 test "$compiler_num" -lt "1000"; then
153 CFLAGS="$CFLAGS -i-dynamic"
156 if test "$compiler_num" -ge "1000"; then
157 dnl icc 10.X or later
158 CFLAGS="$CFLAGS -shared-intel"
166 CARES_CHECK_COMPILER_HALT_ON_ERROR
167 CARES_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE
168 CARES_CHECK_COMPILER_SYMBOL_HIDING
170 CARES_CHECK_NO_UNDEFINED
171 AM_CONDITIONAL(NO_UNDEFINED, test x$need_no_undefined = xyes)
173 CARES_CHECK_CURLDEBUG
174 AM_CONDITIONAL(CURLDEBUG, test x$want_curldebug = xyes)
176 dnl **********************************************************************
177 dnl Compilation based checks should not be done before this point.
178 dnl **********************************************************************
180 dnl **********************************************************************
181 dnl Make sure that our checks for headers windows.h winsock.h winsock2.h
182 dnl and ws2tcpip.h take precedence over any other further checks which
183 dnl could be done later using AC_CHECK_HEADER or AC_CHECK_HEADERS for
184 dnl this specific header files. And do them before its results are used.
185 dnl **********************************************************************
187 CURL_CHECK_HEADER_WINDOWS
188 CURL_CHECK_NATIVE_WINDOWS
189 case X-"$ac_cv_native_windows" in
191 CURL_CHECK_HEADER_WINSOCK
192 CURL_CHECK_HEADER_WINSOCK2
193 CURL_CHECK_HEADER_WS2TCPIP
196 ac_cv_header_winsock_h="no"
197 ac_cv_header_winsock2_h="no"
198 ac_cv_header_ws2tcpip_h="no"
202 dnl **********************************************************************
203 dnl Checks for libraries.
204 dnl **********************************************************************
208 dnl gethostbyname without lib or in the nsl lib?
209 AC_CHECK_FUNC(gethostbyname,
210 [HAVE_GETHOSTBYNAME="1"
212 [ AC_CHECK_LIB(nsl, gethostbyname,
213 [HAVE_GETHOSTBYNAME="1"
218 if test "$HAVE_GETHOSTBYNAME" != "1"
220 dnl gethostbyname in the socket lib?
221 AC_CHECK_LIB(socket, gethostbyname,
222 [HAVE_GETHOSTBYNAME="1"
223 LIBS="$LIBS -lsocket"
227 dnl At least one system has been identified to require BOTH nsl and socket
228 dnl libs at the same time to link properly.
229 if test "$HAVE_GETHOSTBYNAME" != "1"
231 AC_MSG_CHECKING([for gethostbyname with both nsl and socket libs])
232 my_ac_save_LIBS=$LIBS
233 LIBS="-lnsl -lsocket $LIBS"
241 HAVE_GETHOSTBYNAME="1"
244 LIBS=$my_ac_save_LIBS
248 if test "$HAVE_GETHOSTBYNAME" != "1"
250 dnl This is for winsock systems
251 if test "$ac_cv_header_windows_h" = "yes"; then
252 if test "$ac_cv_header_winsock_h" = "yes"; then
255 winsock_LIB="-lwinsock"
258 winsock_LIB="-lwsock32"
262 if test "$ac_cv_header_winsock2_h" = "yes"; then
263 winsock_LIB="-lws2_32"
265 if test ! -z "$winsock_LIB"; then
266 my_ac_save_LIBS=$LIBS
267 LIBS="$winsock_LIB $LIBS"
268 AC_MSG_CHECKING([for gethostbyname in $winsock_LIB])
271 #ifdef HAVE_WINDOWS_H
272 #ifndef WIN32_LEAN_AND_MEAN
273 #define WIN32_LEAN_AND_MEAN
276 #ifdef HAVE_WINSOCK2_H
277 #include <winsock2.h>
279 #ifdef HAVE_WINSOCK_H
285 gethostbyname("www.dummysite.com");
289 HAVE_GETHOSTBYNAME="1"
293 LIBS=$my_ac_save_LIBS
299 if test "$HAVE_GETHOSTBYNAME" != "1"
301 dnl This is for Minix 3.1
302 AC_MSG_CHECKING([for gethostbyname for Minix 3])
305 /* Older Minix versions may need <net/gen/netdb.h> here instead */
308 gethostbyname("www.dummysite.com");
312 HAVE_GETHOSTBYNAME="1"
318 if test "$HAVE_GETHOSTBYNAME" != "1"
320 dnl This is for eCos with a stubbed DNS implementation
321 AC_MSG_CHECKING([for gethostbyname for eCos])
327 gethostbyname("www.dummysite.com");
331 HAVE_GETHOSTBYNAME="1"
337 if test "$HAVE_GETHOSTBYNAME" != "1"
339 dnl gethostbyname in the net lib - for BeOS
340 AC_CHECK_LIB(net, gethostbyname,
341 [HAVE_GETHOSTBYNAME="1"
347 if test "$HAVE_GETHOSTBYNAME" != "1"; then
348 AC_MSG_ERROR([couldn't find libraries for gethostbyname()])
352 AC_CHECK_FUNC(strcasecmp, , [ AC_CHECK_LIB(resolve, strcasecmp) ])
354 if test "$ac_cv_lib_resolve_strcasecmp" = "$ac_cv_func_strcasecmp"; then
355 AC_CHECK_LIB(resolve, strcasecmp,
356 [LIBS="-lresolve $LIBS"],
360 ac_cv_func_strcasecmp="no"
362 CARES_CHECK_LIBS_CONNECT
364 dnl **********************************************************************
365 dnl In case that function clock_gettime with monotonic timer is available,
366 dnl check for additional required libraries.
367 dnl **********************************************************************
368 CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC
370 AC_MSG_CHECKING([whether to use libgcc])
371 AC_ARG_ENABLE(libgcc,
372 AC_HELP_STRING([--enable-libgcc],[use libgcc when linking]),
373 [ case "$enableval" in
385 dnl Default is to try the thread-safe versions of a few functions
388 AC_ARG_ENABLE(thread,dnl
389 AC_HELP_STRING([--disable-thread],[don't look for thread-safe functions])
390 AC_HELP_STRING([--enable-thread],[look for thread-safe functions]),
391 [ case "$enableval" in
394 AC_MSG_WARN(c-ares will not get built using thread-safe functions)
402 if test X"$OPT_THREAD" = Xoff
404 AC_DEFINE(DISABLED_THREADSAFE, 1,
405 [Set to explicitly specify we don't want to use thread-safe functions])
408 dnl for recent AIX versions, we skip all the thread-safe checks above since
409 dnl they claim a thread-safe libc using the standard API. But there are
410 dnl some functions still not thread-safe. Check for these!
412 dnl Let's hope this split URL remains working:
413 dnl http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/aixprggd/ \
414 dnl genprogc/thread_quick_ref.htm
417 dnl **********************************************************************
418 dnl Back to "normal" configuring
419 dnl **********************************************************************
421 dnl Checks for header files.
424 CURL_CHECK_HEADER_MALLOC
425 CURL_CHECK_HEADER_MEMORY
427 dnl check for a few basic system headers we need
447 arpa/nameser_compat.h \
449 dnl to do if not found
455 #ifdef HAVE_SYS_TYPES_H
456 #include <sys/types.h>
458 #ifdef HAVE_SYS_TIME_H
459 #include <sys/time.h>
461 dnl We do this default-include simply to make sure that the nameser_compat.h
462 dnl header *REALLY* can be include after the new nameser.h. It seems AIX 5.1
463 dnl (and others?) is not designed to allow this.
464 #ifdef HAVE_ARPA_NAMESER_H
465 #include <arpa/nameser.h>
468 dnl *Sigh* these are needed in order for net/if.h to get properly detected.
469 #ifdef HAVE_SYS_SOCKET_H
470 #include <sys/socket.h>
472 #ifdef HAVE_NETINET_IN_H
473 #include <netinet/in.h>
478 dnl Checks for typedefs, structures, and compiler characteristics.
482 CURL_CHECK_STRUCT_TIMEVAL
484 AC_CHECK_SIZEOF(size_t)
486 AC_CHECK_SIZEOF(long)
488 AC_CHECK_SIZEOF(time_t)
490 AC_CHECK_TYPE(long long,
491 [AC_DEFINE(HAVE_LONGLONG, 1,
492 [Define to 1 if the compiler supports the 'long long' data type.])]
496 if test "xyes" = "x$longlong"; then
497 AC_MSG_CHECKING([if numberLL works])
498 AC_COMPILE_IFELSE([long long val = 1000LL;],
499 [AC_DEFINE(HAVE_LL, 1, [if your compiler supports LL])]
507 AC_CHECK_TYPE(ssize_t, ,
508 AC_DEFINE(ssize_t, int, [the signed version of size_t]))
510 # check for bool type
511 AC_CHECK_TYPE([bool],[
512 AC_DEFINE(HAVE_BOOL_T, 1,
513 [Define to 1 if bool is an available type.])
515 #ifdef HAVE_SYS_TYPES_H
516 #include <sys/types.h>
518 #ifdef HAVE_STDBOOL_H
523 CARES_CONFIGURE_ARES_SOCKLEN_T
527 TYPE_SOCKADDR_STORAGE
534 CURL_CHECK_FUNC_RECVFROM
536 CURL_CHECK_MSG_NOSIGNAL
538 CARES_CHECK_FUNC_CLOSESOCKET
539 CARES_CHECK_FUNC_CLOSESOCKET_CAMEL
540 CARES_CHECK_FUNC_CONNECT
541 CARES_CHECK_FUNC_FCNTL
542 CARES_CHECK_FUNC_FREEADDRINFO
543 CARES_CHECK_FUNC_GETADDRINFO
544 CARES_CHECK_FUNC_GETHOSTBYADDR
545 CARES_CHECK_FUNC_GETHOSTBYNAME
546 CARES_CHECK_FUNC_GETHOSTNAME
547 CARES_CHECK_FUNC_GETSERVBYPORT_R
548 CARES_CHECK_FUNC_INET_NTOP
549 CARES_CHECK_FUNC_INET_PTON
550 CARES_CHECK_FUNC_IOCTL
551 CARES_CHECK_FUNC_IOCTLSOCKET
552 CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL
553 CARES_CHECK_FUNC_SETSOCKOPT
554 CARES_CHECK_FUNC_SOCKET
555 CARES_CHECK_FUNC_STRCASECMP
556 CARES_CHECK_FUNC_STRCMPI
557 CARES_CHECK_FUNC_STRDUP
558 CARES_CHECK_FUNC_STRICMP
559 CARES_CHECK_FUNC_STRNCASECMP
560 CARES_CHECK_FUNC_STRNCMPI
561 CARES_CHECK_FUNC_STRNICMP
562 CARES_CHECK_FUNC_WRITEV
565 dnl check for AF_INET6
566 CARES_CHECK_CONSTANT(
569 #ifdef HAVE_WINDOWS_H
570 #ifndef WIN32_LEAN_AND_MEAN
571 #define WIN32_LEAN_AND_MEAN
574 #ifdef HAVE_WINSOCK2_H
575 #include <winsock2.h>
578 #ifdef HAVE_SYS_TYPES_H
579 #include <sys/types.h>
581 #ifdef HAVE_SYS_SOCKET_H
582 #include <sys/socket.h>
586 AC_DEFINE_UNQUOTED(HAVE_PF_INET6,1,[Define to 1 if you have PF_INET6.])
589 dnl check for PF_INET6
590 CARES_CHECK_CONSTANT(
593 #ifdef HAVE_WINDOWS_H
594 #ifndef WIN32_LEAN_AND_MEAN
595 #define WIN32_LEAN_AND_MEAN
598 #ifdef HAVE_WINSOCK2_H
599 #include <winsock2.h>
602 #ifdef HAVE_SYS_TYPES_H
603 #include <sys/types.h>
605 #ifdef HAVE_SYS_SOCKET_H
606 #include <sys/socket.h>
610 AC_DEFINE_UNQUOTED(HAVE_AF_INET6,1,[Define to 1 if you have AF_INET6.])
614 dnl check for the in6_addr structure
618 #ifdef HAVE_WINDOWS_H
619 #ifndef WIN32_LEAN_AND_MEAN
620 #define WIN32_LEAN_AND_MEAN
623 #ifdef HAVE_WINSOCK2_H
624 #include <winsock2.h>
625 #ifdef HAVE_WS2TCPIP_H
626 #include <ws2tcpip.h>
630 #ifdef HAVE_SYS_TYPES_H
631 #include <sys/types.h>
633 #ifdef HAVE_NETINET_IN_H
634 #include <netinet/in.h>
638 AC_DEFINE_UNQUOTED(HAVE_STRUCT_IN6_ADDR,1,[Define to 1 if you have struct in6_addr.])
641 dnl check for the sockaddr_in6 structure
645 #ifdef HAVE_WINDOWS_H
646 #ifndef WIN32_LEAN_AND_MEAN
647 #define WIN32_LEAN_AND_MEAN
650 #ifdef HAVE_WINSOCK2_H
651 #include <winsock2.h>
652 #ifdef HAVE_WS2TCPIP_H
653 #include <ws2tcpip.h>
657 #ifdef HAVE_SYS_TYPES_H
658 #include <sys/types.h>
660 #ifdef HAVE_NETINET_IN_H
661 #include <netinet/in.h>
665 AC_DEFINE_UNQUOTED(HAVE_STRUCT_SOCKADDR_IN6,1,
666 [Define to 1 if you have struct sockaddr_in6.]) ac_have_sockaddr_in6=yes
669 AC_CHECK_MEMBER(struct sockaddr_in6.sin6_scope_id,
670 AC_DEFINE_UNQUOTED(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID,1,
671 [Define to 1 if your struct sockaddr_in6 has sin6_scope_id.])
675 #ifdef HAVE_WINDOWS_H
676 #ifndef WIN32_LEAN_AND_MEAN
677 #define WIN32_LEAN_AND_MEAN
680 #ifdef HAVE_WINSOCK2_H
681 #include <winsock2.h>
682 #ifdef HAVE_WS2TCPIP_H
683 #include <ws2tcpip.h>
687 #ifdef HAVE_SYS_TYPES_H
688 #include <sys/types.h>
690 #ifdef HAVE_NETINET_IN_H
691 #include <netinet/in.h>
696 dnl check for the addrinfo structure
697 AC_CHECK_MEMBER(struct addrinfo.ai_flags,
698 AC_DEFINE_UNQUOTED(HAVE_STRUCT_ADDRINFO,1,
699 [Define to 1 if you have struct addrinfo.]),,
702 #ifdef HAVE_WINDOWS_H
703 #ifndef WIN32_LEAN_AND_MEAN
704 #define WIN32_LEAN_AND_MEAN
707 #ifdef HAVE_WINSOCK2_H
708 #include <winsock2.h>
709 #ifdef HAVE_WS2TCPIP_H
710 #include <ws2tcpip.h>
714 #ifdef HAVE_SYS_TYPES_H
715 #include <sys/types.h>
717 #ifdef HAVE_NETINET_IN_H
718 #include <netinet/in.h>
720 #ifdef HAVE_SYS_SOCKET_H
721 #include <sys/socket.h>
731 AC_CHECK_FUNCS([bitncmp \
737 AC_MSG_CHECKING([deeper for $func])
745 eval "ac_cv_func_$func=yes"
746 AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$func]), [1],
747 [Define to 1 if you have the $func function.])
749 AC_MSG_RESULT([but still no])
754 dnl Check for inet_net_pton
755 AC_CHECK_FUNCS(inet_net_pton)
756 dnl Again, some systems have it, but not IPv6
757 if test "$ac_cv_func_inet_net_pton" = "yes" ; then
758 AC_MSG_CHECKING(if inet_net_pton supports IPv6)
761 #ifdef HAVE_SYS_TYPES_H
762 #include <sys/types.h>
764 #ifdef HAVE_SYS_SOCKET_H
765 #include <sys/socket.h>
767 #ifdef HAVE_NETINET_IN_H
768 #include <netinet/in.h>
772 struct in6_addr addr6;
773 if (inet_net_pton(AF_INET6, "::1", &addr6, sizeof(addr6)) < 1)
780 AC_DEFINE_UNQUOTED(HAVE_INET_NET_PTON_IPV6,1,[Define to 1 if inet_net_pton supports IPv6.])
781 ], AC_MSG_RESULT(no),AC_MSG_RESULT(no))
785 AC_CHECK_SIZEOF(struct in6_addr, ,
788 #ifdef HAVE_WINDOWS_H
789 #ifndef WIN32_LEAN_AND_MEAN
790 #define WIN32_LEAN_AND_MEAN
793 #ifdef HAVE_WINSOCK2_H
794 #include <winsock2.h>
795 #ifdef HAVE_WS2TCPIP_H
796 #include <ws2tcpip.h>
800 #ifdef HAVE_SYS_TYPES_H
801 #include <sys/types.h>
803 #ifdef HAVE_SYS_SOCKET_H
804 #include <sys/socket.h>
806 #ifdef HAVE_NETINET_IN_H
807 #include <netinet/in.h>
813 AC_CHECK_SIZEOF(struct in_addr, ,
816 #ifdef HAVE_WINDOWS_H
817 #ifndef WIN32_LEAN_AND_MEAN
818 #define WIN32_LEAN_AND_MEAN
821 #ifdef HAVE_WINSOCK2_H
822 #include <winsock2.h>
823 #ifdef HAVE_WS2TCPIP_H
824 #include <ws2tcpip.h>
828 #ifdef HAVE_SYS_TYPES_H
829 #include <sys/types.h>
831 #ifdef HAVE_SYS_SOCKET_H
832 #include <sys/socket.h>
834 #ifdef HAVE_NETINET_IN_H
835 #include <netinet/in.h>
842 dnl Check if the getnameinfo function is available
843 dnl and get the types of five of its arguments.
844 CURL_CHECK_FUNC_GETNAMEINFO
848 [AC_DEFINE(ARES_BIG_ENDIAN, 1,
849 [define this if ares is built for a big endian system])],
851 [AC_MSG_WARN([couldn't figure out endianess, assuming little endian!])]
854 dnl Check for user-specified random device
856 AC_HELP_STRING([--with-random=FILE],
857 [read randomness from FILE (default=/dev/urandom)]),
858 [ RANDOM_FILE="$withval" ],
860 dnl Check for random device. If we're cross compiling, we can't
861 dnl check, and it's better to assume it doesn't exist than it is
862 dnl to fail on AC_CHECK_FILE or later.
863 if test "$cross_compiling" = "no"; then
864 AC_CHECK_FILE("/dev/urandom", [ RANDOM_FILE="/dev/urandom"] )
866 AC_MSG_WARN([cannot check for /dev/urandom while cross compiling; assuming none])
871 if test -n "$RANDOM_FILE" && test X"$RANDOM_FILE" != Xno ; then
872 AC_SUBST(RANDOM_FILE)
873 AC_DEFINE_UNQUOTED(RANDOM_FILE, "$RANDOM_FILE",
874 [a suitable file/device to read random data from])
877 CARES_CHECK_OPTION_NONBLOCKING
878 CARES_CHECK_NONBLOCKING_SOCKET
880 CARES_CONFIGURE_SYMBOL_HIDING
882 CARES_PRIVATE_LIBS="$LIBS"
883 AC_SUBST(CARES_PRIVATE_LIBS)
885 dnl squeeze whitespace out of some variables
893 squeeze CARES_PRIVATE_LIBS
895 AC_CONFIG_FILES([Makefile libcares.pc])