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
163 CARES_CHECK_COMPILER_STRUCT_MEMBER_SIZE
165 dnl **********************************************************************
166 dnl Compilation based checks should not be done before this point.
167 dnl **********************************************************************
169 dnl **********************************************************************
170 dnl Make sure that our checks for headers windows.h winsock.h winsock2.h
171 dnl and ws2tcpip.h take precedence over any other further checks which
172 dnl could be done later using AC_CHECK_HEADER or AC_CHECK_HEADERS for
173 dnl this specific header files. And do them before its results are used.
174 dnl **********************************************************************
176 CURL_CHECK_HEADER_WINDOWS
177 CURL_CHECK_NATIVE_WINDOWS
178 case X-"$ac_cv_native_windows" in
180 CURL_CHECK_HEADER_WINSOCK
181 CURL_CHECK_HEADER_WINSOCK2
182 CURL_CHECK_HEADER_WS2TCPIP
185 ac_cv_header_winsock_h="no"
186 ac_cv_header_winsock2_h="no"
187 ac_cv_header_ws2tcpip_h="no"
191 dnl **********************************************************************
192 dnl Checks for libraries.
193 dnl **********************************************************************
197 dnl gethostbyname without lib or in the nsl lib?
198 AC_CHECK_FUNC(gethostbyname,
199 [HAVE_GETHOSTBYNAME="1"
201 [ AC_CHECK_LIB(nsl, gethostbyname,
202 [HAVE_GETHOSTBYNAME="1"
207 if test "$HAVE_GETHOSTBYNAME" != "1"
209 dnl gethostbyname in the socket lib?
210 AC_CHECK_LIB(socket, gethostbyname,
211 [HAVE_GETHOSTBYNAME="1"
212 LIBS="$LIBS -lsocket"
216 dnl At least one system has been identified to require BOTH nsl and socket
217 dnl libs at the same time to link properly.
218 if test "$HAVE_GETHOSTBYNAME" != "1"
220 AC_MSG_CHECKING([for gethostbyname with both nsl and socket libs])
221 my_ac_save_LIBS=$LIBS
222 LIBS="-lnsl -lsocket $LIBS"
230 HAVE_GETHOSTBYNAME="1"
233 LIBS=$my_ac_save_LIBS
237 if test "$HAVE_GETHOSTBYNAME" != "1"
239 dnl This is for winsock systems
240 if test "$ac_cv_header_windows_h" = "yes"; then
241 if test "$ac_cv_header_winsock_h" = "yes"; then
244 winsock_LIB="-lwinsock"
247 winsock_LIB="-lwsock32"
251 if test "$ac_cv_header_winsock2_h" = "yes"; then
252 winsock_LIB="-lws2_32"
254 if test ! -z "$winsock_LIB"; then
255 my_ac_save_LIBS=$LIBS
256 LIBS="$winsock_LIB $LIBS"
257 AC_MSG_CHECKING([for gethostbyname in $winsock_LIB])
260 #ifdef HAVE_WINDOWS_H
261 #ifndef WIN32_LEAN_AND_MEAN
262 #define WIN32_LEAN_AND_MEAN
265 #ifdef HAVE_WINSOCK2_H
266 #include <winsock2.h>
268 #ifdef HAVE_WINSOCK_H
274 gethostbyname("www.dummysite.com");
278 HAVE_GETHOSTBYNAME="1"
282 LIBS=$my_ac_save_LIBS
288 if test "$HAVE_GETHOSTBYNAME" != "1"
290 dnl This is for Minix 3.1
291 AC_MSG_CHECKING([for gethostbyname for Minix 3])
294 /* Older Minix versions may need <net/gen/netdb.h> here instead */
297 gethostbyname("www.dummysite.com");
301 HAVE_GETHOSTBYNAME="1"
307 if test "$HAVE_GETHOSTBYNAME" != "1"
309 dnl This is for eCos with a stubbed DNS implementation
310 AC_MSG_CHECKING([for gethostbyname for eCos])
316 gethostbyname("www.dummysite.com");
320 HAVE_GETHOSTBYNAME="1"
326 if test "$HAVE_GETHOSTBYNAME" != "1"
328 dnl gethostbyname in the net lib - for BeOS
329 AC_CHECK_LIB(net, gethostbyname,
330 [HAVE_GETHOSTBYNAME="1"
336 if test "$HAVE_GETHOSTBYNAME" != "1"; then
337 AC_MSG_ERROR([couldn't find libraries for gethostbyname()])
341 AC_CHECK_FUNC(strcasecmp, , [ AC_CHECK_LIB(resolve, strcasecmp) ])
343 if test "$ac_cv_lib_resolve_strcasecmp" = "$ac_cv_func_strcasecmp"; then
344 AC_CHECK_LIB(resolve, strcasecmp,
345 [LIBS="-lresolve $LIBS"],
349 ac_cv_func_strcasecmp="no"
352 AC_CHECK_FUNC(connect, , [ AC_CHECK_LIB(socket, connect) ])
354 dnl **********************************************************************
355 dnl In case that function clock_gettime with monotonic timer is available,
356 dnl check for additional required libraries.
357 dnl **********************************************************************
358 CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC
360 AC_MSG_CHECKING([whether to use libgcc])
361 AC_ARG_ENABLE(libgcc,
362 AC_HELP_STRING([--enable-libgcc],[use libgcc when linking]),
363 [ case "$enableval" in
375 dnl Default is to try the thread-safe versions of a few functions
378 dnl detect AIX 4.3 or later
379 AC_MSG_CHECKING([AIX 4.3 or later])
381 #if defined(_AIX) && defined(_AIX43)
384 #error "this is not AIX 4.3 or later"
387 [ AC_MSG_RESULT([yes])
390 [ AC_MSG_RESULT([no]) ]
393 AC_ARG_ENABLE(thread,dnl
394 AC_HELP_STRING([--disable-thread],[don't look for thread-safe functions])
395 AC_HELP_STRING([--enable-thread],[look for thread-safe functions]),
396 [ case "$enableval" in
399 AC_MSG_WARN(c-ares will not get built using thread-safe functions)
407 if test X"$OPT_THREAD" = Xoff
409 AC_DEFINE(DISABLED_THREADSAFE, 1,
410 [Set to explicitly specify we don't want to use thread-safe functions])
413 dnl for recent AIX versions, we skip all the thread-safe checks above since
414 dnl they claim a thread-safe libc using the standard API. But there are
415 dnl some functions still not thread-safe. Check for these!
417 dnl Let's hope this split URL remains working:
418 dnl http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/aixprggd/ \
419 dnl genprogc/thread_quick_ref.htm
421 if test "x$RECENTAIX" = "xyes"; then
423 AC_DEFINE(_THREAD_SAFE, 1, [define this if you need it to compile thread-safe code])
428 dnl **********************************************************************
429 dnl Back to "normal" configuring
430 dnl **********************************************************************
432 dnl Checks for header files.
435 CURL_CHECK_HEADER_MALLOC
436 CURL_CHECK_HEADER_MEMORY
438 dnl check for a few basic system headers we need
457 arpa/nameser_compat.h \
459 dnl to do if not found
465 #ifdef HAVE_SYS_TYPES_H
466 #include <sys/types.h>
468 #ifdef HAVE_SYS_TIME_H
469 #include <sys/time.h>
471 dnl We do this default-include simply to make sure that the nameser_compat.h
472 dnl header *REALLY* can be include after the new nameser.h. It seems AIX 5.1
473 dnl (and others?) is not designed to allow this.
474 #ifdef HAVE_ARPA_NAMESER_H
475 #include <arpa/nameser.h>
478 dnl *Sigh* these are needed in order for net/if.h to get properly detected.
479 #ifdef HAVE_SYS_SOCKET_H
480 #include <sys/socket.h>
482 #ifdef HAVE_NETINET_IN_H
483 #include <netinet/in.h>
488 dnl Checks for typedefs, structures, and compiler characteristics.
492 CURL_CHECK_STRUCT_TIMEVAL
494 AC_CHECK_SIZEOF(size_t)
496 AC_CHECK_SIZEOF(long)
498 AC_CHECK_SIZEOF(time_t)
500 AC_CHECK_TYPE(long long,
501 [AC_DEFINE(HAVE_LONGLONG, 1,
502 [Define to 1 if the compiler supports the 'long long' data type.])]
506 if test "xyes" = "x$longlong"; then
507 AC_MSG_CHECKING([if numberLL works])
508 AC_COMPILE_IFELSE([long long val = 1000LL;],
509 [AC_DEFINE(HAVE_LL, 1, [if your compiler supports LL])]
517 AC_CHECK_TYPE(ssize_t, ,
518 AC_DEFINE(ssize_t, int, [the signed version of size_t]))
520 # check for bool type
521 AC_CHECK_TYPE([bool],[
522 AC_DEFINE(HAVE_BOOL_T, 1,
523 [Define to 1 if bool is an available type.])
525 #ifdef HAVE_SYS_TYPES_H
526 #include <sys/types.h>
528 #ifdef HAVE_STDBOOL_H
533 CARES_CONFIGURE_ARES_SOCKLEN_T
537 TYPE_SOCKADDR_STORAGE
544 CURL_CHECK_FUNC_RECVFROM
546 CURL_CHECK_MSG_NOSIGNAL
548 CARES_CHECK_FUNC_FCNTL
549 CARES_CHECK_FUNC_FREEADDRINFO
550 CARES_CHECK_FUNC_GETADDRINFO
551 CARES_CHECK_FUNC_GETHOSTBYADDR
552 CARES_CHECK_FUNC_GETHOSTBYNAME
553 CARES_CHECK_FUNC_GETHOSTNAME
554 CARES_CHECK_FUNC_GETSERVBYPORT_R
555 CARES_CHECK_FUNC_INET_NTOP
556 CARES_CHECK_FUNC_INET_PTON
557 CARES_CHECK_FUNC_IOCTL
558 CARES_CHECK_FUNC_IOCTLSOCKET
559 CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL
560 CARES_CHECK_FUNC_SETSOCKOPT
561 CARES_CHECK_FUNC_STRCASECMP
562 CARES_CHECK_FUNC_STRCMPI
563 CARES_CHECK_FUNC_STRDUP
564 CARES_CHECK_FUNC_STRICMP
565 CARES_CHECK_FUNC_STRNCASECMP
566 CARES_CHECK_FUNC_STRNCMPI
567 CARES_CHECK_FUNC_STRNICMP
568 CARES_CHECK_FUNC_WRITEV
571 dnl check for AF_INET6
572 CARES_CHECK_CONSTANT(
575 #ifdef HAVE_WINDOWS_H
576 #ifndef WIN32_LEAN_AND_MEAN
577 #define WIN32_LEAN_AND_MEAN
580 #ifdef HAVE_WINSOCK2_H
581 #include <winsock2.h>
584 #ifdef HAVE_SYS_TYPES_H
585 #include <sys/types.h>
587 #ifdef HAVE_SYS_SOCKET_H
588 #include <sys/socket.h>
592 AC_DEFINE_UNQUOTED(HAVE_PF_INET6,1,[Define to 1 if you have PF_INET6.])
595 dnl check for PF_INET6
596 CARES_CHECK_CONSTANT(
599 #ifdef HAVE_WINDOWS_H
600 #ifndef WIN32_LEAN_AND_MEAN
601 #define WIN32_LEAN_AND_MEAN
604 #ifdef HAVE_WINSOCK2_H
605 #include <winsock2.h>
608 #ifdef HAVE_SYS_TYPES_H
609 #include <sys/types.h>
611 #ifdef HAVE_SYS_SOCKET_H
612 #include <sys/socket.h>
616 AC_DEFINE_UNQUOTED(HAVE_AF_INET6,1,[Define to 1 if you have AF_INET6.])
620 dnl check for the in6_addr structure
624 #ifdef HAVE_WINDOWS_H
625 #ifndef WIN32_LEAN_AND_MEAN
626 #define WIN32_LEAN_AND_MEAN
629 #ifdef HAVE_WINSOCK2_H
630 #include <winsock2.h>
631 #ifdef HAVE_WS2TCPIP_H
632 #include <ws2tcpip.h>
636 #ifdef HAVE_SYS_TYPES_H
637 #include <sys/types.h>
639 #ifdef HAVE_NETINET_IN_H
640 #include <netinet/in.h>
644 AC_DEFINE_UNQUOTED(HAVE_STRUCT_IN6_ADDR,1,[Define to 1 if you have struct in6_addr.])
647 dnl check for the sockaddr_in6 structure
651 #ifdef HAVE_WINDOWS_H
652 #ifndef WIN32_LEAN_AND_MEAN
653 #define WIN32_LEAN_AND_MEAN
656 #ifdef HAVE_WINSOCK2_H
657 #include <winsock2.h>
658 #ifdef HAVE_WS2TCPIP_H
659 #include <ws2tcpip.h>
663 #ifdef HAVE_SYS_TYPES_H
664 #include <sys/types.h>
666 #ifdef HAVE_NETINET_IN_H
667 #include <netinet/in.h>
671 AC_DEFINE_UNQUOTED(HAVE_STRUCT_SOCKADDR_IN6,1,
672 [Define to 1 if you have struct sockaddr_in6.]) ac_have_sockaddr_in6=yes
675 AC_CHECK_MEMBER(struct sockaddr_in6.sin6_scope_id,
676 AC_DEFINE_UNQUOTED(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID,1,
677 [Define to 1 if your struct sockaddr_in6 has sin6_scope_id.])
681 #ifdef HAVE_WINDOWS_H
682 #ifndef WIN32_LEAN_AND_MEAN
683 #define WIN32_LEAN_AND_MEAN
686 #ifdef HAVE_WINSOCK2_H
687 #include <winsock2.h>
688 #ifdef HAVE_WS2TCPIP_H
689 #include <ws2tcpip.h>
693 #ifdef HAVE_SYS_TYPES_H
694 #include <sys/types.h>
696 #ifdef HAVE_NETINET_IN_H
697 #include <netinet/in.h>
702 dnl check for the addrinfo structure
703 AC_CHECK_MEMBER(struct addrinfo.ai_flags,
704 AC_DEFINE_UNQUOTED(HAVE_STRUCT_ADDRINFO,1,
705 [Define to 1 if you have struct addrinfo.]),,
708 #ifdef HAVE_WINDOWS_H
709 #ifndef WIN32_LEAN_AND_MEAN
710 #define WIN32_LEAN_AND_MEAN
713 #ifdef HAVE_WINSOCK2_H
714 #include <winsock2.h>
715 #ifdef HAVE_WS2TCPIP_H
716 #include <ws2tcpip.h>
720 #ifdef HAVE_SYS_TYPES_H
721 #include <sys/types.h>
723 #ifdef HAVE_NETINET_IN_H
724 #include <netinet/in.h>
726 #ifdef HAVE_SYS_SOCKET_H
727 #include <sys/socket.h>
737 AC_CHECK_FUNCS([bitncmp \
743 AC_MSG_CHECKING([deeper for $func])
751 eval "ac_cv_func_$func=yes"
752 AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_$func]), [1],
753 [Define to 1 if you have the $func function.])
755 AC_MSG_RESULT([but still no])
760 dnl Check for inet_net_pton
761 AC_CHECK_FUNCS(inet_net_pton)
762 dnl Again, some systems have it, but not IPv6
763 if test "$ac_cv_func_inet_net_pton" = "yes" ; then
764 AC_MSG_CHECKING(if inet_net_pton supports IPv6)
767 #ifdef HAVE_SYS_TYPES_H
768 #include <sys/types.h>
770 #ifdef HAVE_SYS_SOCKET_H
771 #include <sys/socket.h>
773 #ifdef HAVE_NETINET_IN_H
774 #include <netinet/in.h>
778 struct in6_addr addr6;
779 if (inet_net_pton(AF_INET6, "::1", &addr6, sizeof(addr6)) < 1)
786 AC_DEFINE_UNQUOTED(HAVE_INET_NET_PTON_IPV6,1,[Define to 1 if inet_net_pton supports IPv6.])
787 ], AC_MSG_RESULT(no),AC_MSG_RESULT(no))
791 AC_CHECK_SIZEOF(struct in6_addr, ,
794 #ifdef HAVE_WINDOWS_H
795 #ifndef WIN32_LEAN_AND_MEAN
796 #define WIN32_LEAN_AND_MEAN
799 #ifdef HAVE_WINSOCK2_H
800 #include <winsock2.h>
801 #ifdef HAVE_WS2TCPIP_H
802 #include <ws2tcpip.h>
806 #ifdef HAVE_SYS_TYPES_H
807 #include <sys/types.h>
809 #ifdef HAVE_SYS_SOCKET_H
810 #include <sys/socket.h>
812 #ifdef HAVE_NETINET_IN_H
813 #include <netinet/in.h>
819 AC_CHECK_SIZEOF(struct in_addr, ,
822 #ifdef HAVE_WINDOWS_H
823 #ifndef WIN32_LEAN_AND_MEAN
824 #define WIN32_LEAN_AND_MEAN
827 #ifdef HAVE_WINSOCK2_H
828 #include <winsock2.h>
829 #ifdef HAVE_WS2TCPIP_H
830 #include <ws2tcpip.h>
834 #ifdef HAVE_SYS_TYPES_H
835 #include <sys/types.h>
837 #ifdef HAVE_SYS_SOCKET_H
838 #include <sys/socket.h>
840 #ifdef HAVE_NETINET_IN_H
841 #include <netinet/in.h>
848 dnl Check if the getnameinfo function is available
849 dnl and get the types of five of its arguments.
850 CURL_CHECK_FUNC_GETNAMEINFO
854 [AC_DEFINE(ARES_BIG_ENDIAN, 1,
855 [define this if ares is built for a big endian system])],
857 [AC_MSG_WARN([couldn't figure out endianess, assuming little endian!])]
860 dnl Check for user-specified random device
862 AC_HELP_STRING([--with-random=FILE],
863 [read randomness from FILE (default=/dev/urandom)]),
864 [ RANDOM_FILE="$withval" ],
866 dnl Check for random device. If we're cross compiling, we can't
867 dnl check, and it's better to assume it doesn't exist than it is
868 dnl to fail on AC_CHECK_FILE or later.
869 if test "$cross_compiling" = "no"; then
870 AC_CHECK_FILE("/dev/urandom", [ RANDOM_FILE="/dev/urandom"] )
872 AC_MSG_WARN([cannot check for /dev/urandom while cross compiling; assuming none])
877 if test -n "$RANDOM_FILE" && test X"$RANDOM_FILE" != Xno ; then
878 AC_SUBST(RANDOM_FILE)
879 AC_DEFINE_UNQUOTED(RANDOM_FILE, "$RANDOM_FILE",
880 [a suitable file/device to read random data from])
883 CARES_CHECK_OPTION_NONBLOCKING
884 CARES_CHECK_NONBLOCKING_SOCKET
886 CARES_PRIVATE_LIBS="$LIBS"
887 AC_SUBST(CARES_PRIVATE_LIBS)
889 dnl squeeze whitespace out of some variables
897 squeeze CARES_PRIVATE_LIBS
899 AC_CONFIG_FILES([Makefile libcares.pc])