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 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 CURL_CHECK_COMPILER_HALT_ON_ERROR
162 CURL_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-"$ac_cv_native_windows" in
179 CURL_CHECK_HEADER_WINSOCK
180 CURL_CHECK_HEADER_WINSOCK2
181 CURL_CHECK_HEADER_WS2TCPIP
184 ac_cv_header_winsock_h="no"
185 ac_cv_header_winsock2_h="no"
186 ac_cv_header_ws2tcpip_h="no"
190 dnl **********************************************************************
191 dnl Checks for libraries.
192 dnl **********************************************************************
194 dnl gethostbyname without lib or in the nsl lib?
195 AC_CHECK_FUNC(gethostbyname,
196 [HAVE_GETHOSTBYNAME="1"
198 [ AC_CHECK_LIB(nsl, gethostbyname,
199 [HAVE_GETHOSTBYNAME="1"
204 if test "$HAVE_GETHOSTBYNAME" != "1"
206 dnl gethostbyname in the socket lib?
207 AC_CHECK_LIB(socket, gethostbyname,
208 [HAVE_GETHOSTBYNAME="1"
209 LIBS="$LIBS -lsocket"
213 dnl At least one system has been identified to require BOTH nsl and socket
214 dnl libs at the same time to link properly.
215 if test "$HAVE_GETHOSTBYNAME" != "1"
217 AC_MSG_CHECKING([for gethostbyname with both nsl and socket libs])
218 my_ac_save_LIBS=$LIBS
219 LIBS="-lnsl -lsocket $LIBS"
227 HAVE_GETHOSTBYNAME="1"
230 LIBS=$my_ac_save_LIBS
234 if test "$HAVE_GETHOSTBYNAME" != "1"
236 dnl This is for winsock systems
237 if test "$ac_cv_header_windows_h" = "yes"; then
238 if test "$ac_cv_header_winsock_h" = "yes"; then
241 winsock_LIB="-lwinsock"
244 winsock_LIB="-lwsock32"
248 if test "$ac_cv_header_winsock2_h" = "yes"; then
249 winsock_LIB="-lws2_32"
251 if test ! -z "$winsock_LIB"; then
252 my_ac_save_LIBS=$LIBS
253 LIBS="$winsock_LIB $LIBS"
254 AC_MSG_CHECKING([for gethostbyname in $winsock_LIB])
257 #ifdef HAVE_WINDOWS_H
258 #ifndef WIN32_LEAN_AND_MEAN
259 #define WIN32_LEAN_AND_MEAN
262 #ifdef HAVE_WINSOCK2_H
263 #include <winsock2.h>
265 #ifdef HAVE_WINSOCK_H
271 gethostbyname("www.dummysite.com");
275 HAVE_GETHOSTBYNAME="1"
279 LIBS=$my_ac_save_LIBS
285 if test "$HAVE_GETHOSTBYNAME" != "1"
287 dnl This is for Minix 3.1
288 AC_MSG_CHECKING([for gethostbyname for Minix 3])
291 /* Older Minix versions may need <net/gen/netdb.h> here instead */
294 gethostbyname("www.dummysite.com");
298 HAVE_GETHOSTBYNAME="1"
304 if test "$HAVE_GETHOSTBYNAME" != "1"
306 dnl This is for eCos with a stubbed DNS implementation
307 AC_MSG_CHECKING([for gethostbyname for eCos])
313 gethostbyname("www.dummysite.com");
317 HAVE_GETHOSTBYNAME="1"
323 if test "$HAVE_GETHOSTBYNAME" != "1"
325 dnl gethostbyname in the net lib - for BeOS
326 AC_CHECK_LIB(net, gethostbyname,
327 [HAVE_GETHOSTBYNAME="1"
333 if test "$HAVE_GETHOSTBYNAME" != "1"; then
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_GETHOSTBYADDR
546 CARES_CHECK_FUNC_GETHOSTBYNAME
547 CARES_CHECK_FUNC_GETHOSTNAME
548 CARES_CHECK_FUNC_GETSERVBYPORT_R
549 CARES_CHECK_FUNC_INET_NTOP
550 CARES_CHECK_FUNC_INET_PTON
551 CARES_CHECK_FUNC_IOCTL
552 CARES_CHECK_FUNC_IOCTLSOCKET
553 CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL
554 CARES_CHECK_FUNC_SETSOCKOPT
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, "$RANDOM_FILE",
874 [a suitable file/device to read random data from])
877 CARES_CHECK_OPTION_NONBLOCKING
878 CARES_CHECK_NONBLOCKING_SOCKET
880 CARES_PRIVATE_LIBS="$LIBS"
881 AC_SUBST(CARES_PRIVATE_LIBS)
883 dnl squeeze whitespace out of some variables
891 squeeze CARES_PRIVATE_LIBS
893 AC_CONFIG_FILES([Makefile libcares.pc])