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 ares_build.h])
13 CARES_CHECK_OPTION_DEBUG
14 CARES_CHECK_OPTION_OPTIMIZE
15 CARES_CHECK_OPTION_WARNINGS
17 CARES_CHECK_PATH_SEPARATOR
19 dnl SED is mandatory for configure process and libtool.
20 dnl Set it now, allowing it to be changed later.
21 AC_PATH_PROG([SED], [sed], [not_found],
22 [$PATH:/usr/bin:/usr/local/bin])
23 if test -z "$SED" || test "$SED" = "not_found"; then
24 AC_MSG_ERROR([sed not found in PATH. Cannot continue without sed.])
28 dnl GREP is mandatory for configure process and libtool.
29 dnl Set it now, allowing it to be changed later.
30 AC_PATH_PROG([GREP], [grep], [not_found],
31 [$PATH:/usr/bin:/usr/local/bin])
32 if test -z "$GREP" || test "$GREP" = "not_found"; then
33 AC_MSG_ERROR([grep not found in PATH. Cannot continue without grep.])
37 dnl EGREP is mandatory for configure process and libtool.
38 dnl Set it now, allowing it to be changed later.
39 if echo a | ($GREP -E '(a|b)') >/dev/null 2>&1; then
40 AC_MSG_CHECKING([for egrep])
42 AC_MSG_RESULT([$EGREP])
44 AC_PATH_PROG([EGREP], [egrep], [not_found],
45 [$PATH:/usr/bin:/usr/local/bin])
47 if test -z "$EGREP" || test "$EGREP" = "not_found"; then
48 AC_MSG_ERROR([egrep not found in PATH. Cannot continue without egrep.])
52 dnl AR is mandatory for configure process and libtool.
53 dnl This is target dependant, so check it as a tool.
54 AC_PATH_TOOL([AR], [ar], [not_found],
55 [$PATH:/usr/bin:/usr/local/bin])
56 if test -z "$AR" || test "$AR" = "not_found"; then
57 AC_MSG_ERROR([ar not found in PATH. Cannot continue without ar.])
61 dnl Fetch c-ares version from ares_version.h
62 VERSION=`$SED -ne 's/^#define ARES_VERSION_STR "\(.*\)"/\1/p' ${srcdir}/ares_version.h`
63 AM_INIT_AUTOMAKE([c-ares], [$VERSION])
64 AC_MSG_CHECKING([c-ares version])
65 AC_MSG_RESULT([$VERSION])
68 dnl Detect the canonical host and target build environment
72 dnl Get system canonical name
73 AC_DEFINE_UNQUOTED(OS, "${host}", [cpu-machine-OS])
79 dnl This defines _ALL_SOURCE for AIX
80 CARES_CHECK_AIX_ALL_SOURCE
82 dnl Our configure and build reentrant settings
83 CARES_CONFIGURE_REENTRANT
85 dnl check for how to do large files
90 AC_DEFINE(ETC_INET, 1, [if a /etc/inet dir is being used])
94 dnl support building of Windows DLLs
97 CARES_PROCESS_DEBUG_BUILD_OPTS
99 AM_CONDITIONAL(DEBUGBUILD, test x$want_debug = xyes)
100 AM_CONDITIONAL(CURLDEBUG, test x$want_debug = xyes)
102 dnl force libtool to build static libraries with PIC on AMD64-Linux & FreeBSD
103 AC_MSG_CHECKING([if arch-OS host is AMD64-Linux/FreeBSD (to build static libraries with PIC)])
105 x86_64*linux*|amd64*freebsd*|ia64*freebsd*)
117 AC_MSG_CHECKING([if we need -no-undefined])
119 *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
120 need_no_undefined=yes
126 AC_MSG_RESULT($need_no_undefined)
127 AM_CONDITIONAL(NO_UNDEFINED, test x$need_no_undefined = xyes)
129 dnl **********************************************************************
130 dnl platform/compiler/architecture specific checks/flags
131 dnl **********************************************************************
134 CARES_SET_COMPILER_BASIC_OPTS
135 CARES_SET_COMPILER_DEBUG_OPTS
136 CARES_SET_COMPILER_OPTIMIZE_OPTS
137 CARES_SET_COMPILER_WARNING_OPTS
141 x86_64*linux*|amd64*freebsd*|ia64*freebsd*)
143 if test "$compiler_id" = "INTEL_UNIX_C"; then
145 if test "$compiler_num" -ge "900" &&
146 test "$compiler_num" -lt "1000"; then
148 CFLAGS="$CFLAGS -i-dynamic"
151 if test "$compiler_num" -ge "1000"; then
152 dnl icc 10.X or later
153 CFLAGS="$CFLAGS -shared-intel"
161 CARES_CHECK_COMPILER_HALT_ON_ERROR
162 CARES_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE
164 dnl **********************************************************************
165 dnl Compilation based checks should not be done before this point.
166 dnl **********************************************************************
168 dnl **********************************************************************
169 dnl Make sure that our checks for headers windows.h winsock.h winsock2.h
170 dnl and ws2tcpip.h take precedence over any other further checks which
171 dnl could be done later using AC_CHECK_HEADER or AC_CHECK_HEADERS for
172 dnl this specific header files. And do them before its results are used.
173 dnl **********************************************************************
175 CURL_CHECK_HEADER_WINDOWS
176 CURL_CHECK_NATIVE_WINDOWS
177 case X-"$ac_cv_native_windows" in
179 CURL_CHECK_HEADER_WINSOCK
180 CURL_CHECK_HEADER_WINSOCK2
181 CURL_CHECK_HEADER_WS2TCPIP
184 ac_cv_header_winsock_h="no"
185 ac_cv_header_winsock2_h="no"
186 ac_cv_header_ws2tcpip_h="no"
190 dnl **********************************************************************
191 dnl Checks for libraries.
192 dnl **********************************************************************
196 dnl gethostbyname without lib or in the nsl lib?
197 AC_CHECK_FUNC(gethostbyname,
198 [HAVE_GETHOSTBYNAME="1"
200 [ AC_CHECK_LIB(nsl, gethostbyname,
201 [HAVE_GETHOSTBYNAME="1"
206 if test "$HAVE_GETHOSTBYNAME" != "1"
208 dnl gethostbyname in the socket lib?
209 AC_CHECK_LIB(socket, gethostbyname,
210 [HAVE_GETHOSTBYNAME="1"
211 LIBS="$LIBS -lsocket"
215 dnl At least one system has been identified to require BOTH nsl and socket
216 dnl libs at the same time to link properly.
217 if test "$HAVE_GETHOSTBYNAME" != "1"
219 AC_MSG_CHECKING([for gethostbyname with both nsl and socket libs])
220 my_ac_save_LIBS=$LIBS
221 LIBS="-lnsl -lsocket $LIBS"
229 HAVE_GETHOSTBYNAME="1"
232 LIBS=$my_ac_save_LIBS
236 if test "$HAVE_GETHOSTBYNAME" != "1"
238 dnl This is for winsock systems
239 if test "$ac_cv_header_windows_h" = "yes"; then
240 if test "$ac_cv_header_winsock_h" = "yes"; then
243 winsock_LIB="-lwinsock"
246 winsock_LIB="-lwsock32"
250 if test "$ac_cv_header_winsock2_h" = "yes"; then
251 winsock_LIB="-lws2_32"
253 if test ! -z "$winsock_LIB"; then
254 my_ac_save_LIBS=$LIBS
255 LIBS="$winsock_LIB $LIBS"
256 AC_MSG_CHECKING([for gethostbyname in $winsock_LIB])
259 #ifdef HAVE_WINDOWS_H
260 #ifndef WIN32_LEAN_AND_MEAN
261 #define WIN32_LEAN_AND_MEAN
264 #ifdef HAVE_WINSOCK2_H
265 #include <winsock2.h>
267 #ifdef HAVE_WINSOCK_H
273 gethostbyname("www.dummysite.com");
277 HAVE_GETHOSTBYNAME="1"
281 LIBS=$my_ac_save_LIBS
287 if test "$HAVE_GETHOSTBYNAME" != "1"
289 dnl This is for Minix 3.1
290 AC_MSG_CHECKING([for gethostbyname for Minix 3])
293 /* Older Minix versions may need <net/gen/netdb.h> here instead */
296 gethostbyname("www.dummysite.com");
300 HAVE_GETHOSTBYNAME="1"
306 if test "$HAVE_GETHOSTBYNAME" != "1"
308 dnl This is for eCos with a stubbed DNS implementation
309 AC_MSG_CHECKING([for gethostbyname for eCos])
315 gethostbyname("www.dummysite.com");
319 HAVE_GETHOSTBYNAME="1"
325 if test "$HAVE_GETHOSTBYNAME" != "1"
327 dnl gethostbyname in the net lib - for BeOS
328 AC_CHECK_LIB(net, gethostbyname,
329 [HAVE_GETHOSTBYNAME="1"
335 if test "$HAVE_GETHOSTBYNAME" != "1"; then
336 AC_MSG_ERROR([couldn't find libraries for gethostbyname()])
340 AC_CHECK_FUNC(strcasecmp, , [ AC_CHECK_LIB(resolve, strcasecmp) ])
342 if test "$ac_cv_lib_resolve_strcasecmp" = "$ac_cv_func_strcasecmp"; then
343 AC_CHECK_LIB(resolve, strcasecmp,
344 [LIBS="-lresolve $LIBS"],
348 ac_cv_func_strcasecmp="no"
351 AC_CHECK_FUNC(connect, , [ AC_CHECK_LIB(socket, connect) ])
353 dnl **********************************************************************
354 dnl In case that function clock_gettime with monotonic timer is available,
355 dnl check for additional required libraries.
356 dnl **********************************************************************
357 CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC
359 AC_MSG_CHECKING([whether to use libgcc])
360 AC_ARG_ENABLE(libgcc,
361 AC_HELP_STRING([--enable-libgcc],[use libgcc when linking]),
362 [ case "$enableval" in
374 dnl Default is to try the thread-safe versions of a few functions
377 dnl detect AIX 4.3 or later
378 AC_MSG_CHECKING([AIX 4.3 or later])
380 #if defined(_AIX) && defined(_AIX43)
383 #error "this is not AIX 4.3 or later"
386 [ AC_MSG_RESULT([yes])
389 [ AC_MSG_RESULT([no]) ]
392 AC_ARG_ENABLE(thread,dnl
393 AC_HELP_STRING([--disable-thread],[don't look for thread-safe functions])
394 AC_HELP_STRING([--enable-thread],[look for thread-safe functions]),
395 [ case "$enableval" in
398 AC_MSG_WARN(c-ares will not get built using thread-safe functions)
406 if test X"$OPT_THREAD" = Xoff
408 AC_DEFINE(DISABLED_THREADSAFE, 1,
409 [Set to explicitly specify we don't want to use thread-safe functions])
412 dnl for recent AIX versions, we skip all the thread-safe checks above since
413 dnl they claim a thread-safe libc using the standard API. But there are
414 dnl some functions still not thread-safe. Check for these!
416 dnl Let's hope this split URL remains working:
417 dnl http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/aixprggd/ \
418 dnl genprogc/thread_quick_ref.htm
420 if test "x$RECENTAIX" = "xyes"; then
422 AC_DEFINE(_THREAD_SAFE, 1, [define this if you need it to compile thread-safe code])
427 dnl **********************************************************************
428 dnl Back to "normal" configuring
429 dnl **********************************************************************
431 dnl Checks for header files.
434 CURL_CHECK_HEADER_MALLOC
435 CURL_CHECK_HEADER_MEMORY
437 dnl check for a few basic system headers we need
456 arpa/nameser_compat.h \
458 dnl to do if not found
464 #ifdef HAVE_SYS_TYPES_H
465 #include <sys/types.h>
467 #ifdef HAVE_SYS_TIME_H
468 #include <sys/time.h>
470 dnl We do this default-include simply to make sure that the nameser_compat.h
471 dnl header *REALLY* can be include after the new nameser.h. It seems AIX 5.1
472 dnl (and others?) is not designed to allow this.
473 #ifdef HAVE_ARPA_NAMESER_H
474 #include <arpa/nameser.h>
477 dnl *Sigh* these are needed in order for net/if.h to get properly detected.
478 #ifdef HAVE_SYS_SOCKET_H
479 #include <sys/socket.h>
481 #ifdef HAVE_NETINET_IN_H
482 #include <netinet/in.h>
487 dnl Checks for typedefs, structures, and compiler characteristics.
491 CURL_CHECK_STRUCT_TIMEVAL
493 AC_CHECK_SIZEOF(size_t)
495 AC_CHECK_SIZEOF(long)
497 AC_CHECK_SIZEOF(time_t)
499 AC_CHECK_TYPE(long long,
500 [AC_DEFINE(HAVE_LONGLONG, 1,
501 [Define to 1 if the compiler supports the 'long long' data type.])]
505 if test "xyes" = "x$longlong"; then
506 AC_MSG_CHECKING([if numberLL works])
507 AC_COMPILE_IFELSE([long long val = 1000LL;],
508 [AC_DEFINE(HAVE_LL, 1, [if your compiler supports LL])]
516 AC_CHECK_TYPE(ssize_t, ,
517 AC_DEFINE(ssize_t, int, [the signed version of size_t]))
519 # check for bool type
520 AC_CHECK_TYPE([bool],[
521 AC_DEFINE(HAVE_BOOL_T, 1,
522 [Define to 1 if bool is an available type.])
524 #ifdef HAVE_SYS_TYPES_H
525 #include <sys/types.h>
527 #ifdef HAVE_STDBOOL_H
532 CARES_CONFIGURE_ARES_SOCKLEN_T
536 TYPE_SOCKADDR_STORAGE
543 CURL_CHECK_FUNC_RECVFROM
545 CURL_CHECK_MSG_NOSIGNAL
547 CARES_CHECK_FUNC_FCNTL
548 CARES_CHECK_FUNC_FREEADDRINFO
549 CARES_CHECK_FUNC_GETADDRINFO
550 CARES_CHECK_FUNC_GETHOSTBYADDR
551 CARES_CHECK_FUNC_GETHOSTBYNAME
552 CARES_CHECK_FUNC_GETHOSTNAME
553 CARES_CHECK_FUNC_GETSERVBYPORT_R
554 CARES_CHECK_FUNC_INET_NTOP
555 CARES_CHECK_FUNC_INET_PTON
556 CARES_CHECK_FUNC_IOCTL
557 CARES_CHECK_FUNC_IOCTLSOCKET
558 CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL
559 CARES_CHECK_FUNC_SETSOCKOPT
560 CARES_CHECK_FUNC_STRCASECMP
561 CARES_CHECK_FUNC_STRCMPI
562 CARES_CHECK_FUNC_STRDUP
563 CARES_CHECK_FUNC_STRICMP
564 CARES_CHECK_FUNC_STRNCASECMP
565 CARES_CHECK_FUNC_STRNCMPI
566 CARES_CHECK_FUNC_STRNICMP
567 CARES_CHECK_FUNC_WRITEV
570 dnl check for AF_INET6
571 CARES_CHECK_CONSTANT(
574 #ifdef HAVE_WINDOWS_H
575 #ifndef WIN32_LEAN_AND_MEAN
576 #define WIN32_LEAN_AND_MEAN
579 #ifdef HAVE_WINSOCK2_H
580 #include <winsock2.h>
583 #ifdef HAVE_SYS_TYPES_H
584 #include <sys/types.h>
586 #ifdef HAVE_SYS_SOCKET_H
587 #include <sys/socket.h>
591 AC_DEFINE_UNQUOTED(HAVE_PF_INET6,1,[Define to 1 if you have PF_INET6.])
594 dnl check for PF_INET6
595 CARES_CHECK_CONSTANT(
598 #ifdef HAVE_WINDOWS_H
599 #ifndef WIN32_LEAN_AND_MEAN
600 #define WIN32_LEAN_AND_MEAN
603 #ifdef HAVE_WINSOCK2_H
604 #include <winsock2.h>
607 #ifdef HAVE_SYS_TYPES_H
608 #include <sys/types.h>
610 #ifdef HAVE_SYS_SOCKET_H
611 #include <sys/socket.h>
615 AC_DEFINE_UNQUOTED(HAVE_AF_INET6,1,[Define to 1 if you have AF_INET6.])
619 dnl check for the in6_addr structure
623 #ifdef HAVE_WINDOWS_H
624 #ifndef WIN32_LEAN_AND_MEAN
625 #define WIN32_LEAN_AND_MEAN
628 #ifdef HAVE_WINSOCK2_H
629 #include <winsock2.h>
630 #ifdef HAVE_WS2TCPIP_H
631 #include <ws2tcpip.h>
635 #ifdef HAVE_SYS_TYPES_H
636 #include <sys/types.h>
638 #ifdef HAVE_NETINET_IN_H
639 #include <netinet/in.h>
643 AC_DEFINE_UNQUOTED(HAVE_STRUCT_IN6_ADDR,1,[Define to 1 if you have struct in6_addr.])
646 dnl check for the sockaddr_in6 structure
650 #ifdef HAVE_WINDOWS_H
651 #ifndef WIN32_LEAN_AND_MEAN
652 #define WIN32_LEAN_AND_MEAN
655 #ifdef HAVE_WINSOCK2_H
656 #include <winsock2.h>
657 #ifdef HAVE_WS2TCPIP_H
658 #include <ws2tcpip.h>
662 #ifdef HAVE_SYS_TYPES_H
663 #include <sys/types.h>
665 #ifdef HAVE_NETINET_IN_H
666 #include <netinet/in.h>
670 AC_DEFINE_UNQUOTED(HAVE_STRUCT_SOCKADDR_IN6,1,
671 [Define to 1 if you have struct sockaddr_in6.]) ac_have_sockaddr_in6=yes
674 AC_CHECK_MEMBER(struct sockaddr_in6.sin6_scope_id,
675 AC_DEFINE_UNQUOTED(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID,1,
676 [Define to 1 if your struct sockaddr_in6 has sin6_scope_id.])
680 #ifdef HAVE_WINDOWS_H
681 #ifndef WIN32_LEAN_AND_MEAN
682 #define WIN32_LEAN_AND_MEAN
685 #ifdef HAVE_WINSOCK2_H
686 #include <winsock2.h>
687 #ifdef HAVE_WS2TCPIP_H
688 #include <ws2tcpip.h>
692 #ifdef HAVE_SYS_TYPES_H
693 #include <sys/types.h>
695 #ifdef HAVE_NETINET_IN_H
696 #include <netinet/in.h>
701 dnl check for the addrinfo structure
702 AC_CHECK_MEMBER(struct addrinfo.ai_flags,
703 AC_DEFINE_UNQUOTED(HAVE_STRUCT_ADDRINFO,1,
704 [Define to 1 if you have struct addrinfo.]),,
707 #ifdef HAVE_WINDOWS_H
708 #ifndef WIN32_LEAN_AND_MEAN
709 #define WIN32_LEAN_AND_MEAN
712 #ifdef HAVE_WINSOCK2_H
713 #include <winsock2.h>
714 #ifdef HAVE_WS2TCPIP_H
715 #include <ws2tcpip.h>
719 #ifdef HAVE_SYS_TYPES_H
720 #include <sys/types.h>
722 #ifdef HAVE_NETINET_IN_H
723 #include <netinet/in.h>
725 #ifdef HAVE_SYS_SOCKET_H
726 #include <sys/socket.h>
736 AC_CHECK_FUNCS([bitncmp \
742 AC_MSG_CHECKING([deeper for $func])
750 eval "ac_cv_func_$func=yes"
751 AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$func]), [1],
752 [Define to 1 if you have the $func function.])
754 AC_MSG_RESULT([but still no])
759 dnl Check for inet_net_pton
760 AC_CHECK_FUNCS(inet_net_pton)
761 dnl Again, some systems have it, but not IPv6
762 if test "$ac_cv_func_inet_net_pton" = "yes" ; then
763 AC_MSG_CHECKING(if inet_net_pton supports IPv6)
766 #ifdef HAVE_SYS_TYPES_H
767 #include <sys/types.h>
769 #ifdef HAVE_SYS_SOCKET_H
770 #include <sys/socket.h>
772 #ifdef HAVE_NETINET_IN_H
773 #include <netinet/in.h>
777 struct in6_addr addr6;
778 if (inet_net_pton(AF_INET6, "::1", &addr6, sizeof(addr6)) < 1)
785 AC_DEFINE_UNQUOTED(HAVE_INET_NET_PTON_IPV6,1,[Define to 1 if inet_net_pton supports IPv6.])
786 ], AC_MSG_RESULT(no),AC_MSG_RESULT(no))
790 AC_CHECK_SIZEOF(struct in6_addr, ,
793 #ifdef HAVE_WINDOWS_H
794 #ifndef WIN32_LEAN_AND_MEAN
795 #define WIN32_LEAN_AND_MEAN
798 #ifdef HAVE_WINSOCK2_H
799 #include <winsock2.h>
800 #ifdef HAVE_WS2TCPIP_H
801 #include <ws2tcpip.h>
805 #ifdef HAVE_SYS_TYPES_H
806 #include <sys/types.h>
808 #ifdef HAVE_SYS_SOCKET_H
809 #include <sys/socket.h>
811 #ifdef HAVE_NETINET_IN_H
812 #include <netinet/in.h>
818 AC_CHECK_SIZEOF(struct in_addr, ,
821 #ifdef HAVE_WINDOWS_H
822 #ifndef WIN32_LEAN_AND_MEAN
823 #define WIN32_LEAN_AND_MEAN
826 #ifdef HAVE_WINSOCK2_H
827 #include <winsock2.h>
828 #ifdef HAVE_WS2TCPIP_H
829 #include <ws2tcpip.h>
833 #ifdef HAVE_SYS_TYPES_H
834 #include <sys/types.h>
836 #ifdef HAVE_SYS_SOCKET_H
837 #include <sys/socket.h>
839 #ifdef HAVE_NETINET_IN_H
840 #include <netinet/in.h>
847 dnl Check if the getnameinfo function is available
848 dnl and get the types of five of its arguments.
849 CURL_CHECK_FUNC_GETNAMEINFO
853 [AC_DEFINE(ARES_BIG_ENDIAN, 1,
854 [define this if ares is built for a big endian system])],
856 [AC_MSG_WARN([couldn't figure out endianess, assuming little endian!])]
859 dnl Check for user-specified random device
861 AC_HELP_STRING([--with-random=FILE],
862 [read randomness from FILE (default=/dev/urandom)]),
863 [ RANDOM_FILE="$withval" ],
865 dnl Check for random device. If we're cross compiling, we can't
866 dnl check, and it's better to assume it doesn't exist than it is
867 dnl to fail on AC_CHECK_FILE or later.
868 if test "$cross_compiling" = "no"; then
869 AC_CHECK_FILE("/dev/urandom", [ RANDOM_FILE="/dev/urandom"] )
871 AC_MSG_WARN([cannot check for /dev/urandom while cross compiling; assuming none])
876 if test -n "$RANDOM_FILE" && test X"$RANDOM_FILE" != Xno ; then
877 AC_SUBST(RANDOM_FILE)
878 AC_DEFINE_UNQUOTED(RANDOM_FILE, "$RANDOM_FILE",
879 [a suitable file/device to read random data from])
882 CARES_CHECK_OPTION_NONBLOCKING
883 CARES_CHECK_NONBLOCKING_SOCKET
885 CARES_PRIVATE_LIBS="$LIBS"
886 AC_SUBST(CARES_PRIVATE_LIBS)
888 dnl squeeze whitespace out of some variables
896 squeeze CARES_PRIVATE_LIBS
898 AC_CONFIG_FILES([Makefile libcares.pc])