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
16 CARES_CHECK_OPTION_CURLDEBUG
18 CARES_CHECK_PATH_SEPARATOR
20 dnl SED is mandatory for configure process and libtool.
21 dnl Set it now, allowing it to be changed later.
22 AC_PATH_PROG([SED], [sed], [not_found],
23 [$PATH:/usr/bin:/usr/local/bin])
24 if test -z "$SED" || test "$SED" = "not_found"; then
25 AC_MSG_ERROR([sed not found in PATH. Cannot continue without sed.])
29 dnl GREP is mandatory for configure process and libtool.
30 dnl Set it now, allowing it to be changed later.
31 AC_PATH_PROG([GREP], [grep], [not_found],
32 [$PATH:/usr/bin:/usr/local/bin])
33 if test -z "$GREP" || test "$GREP" = "not_found"; then
34 AC_MSG_ERROR([grep not found in PATH. Cannot continue without grep.])
38 dnl EGREP is mandatory for configure process and libtool.
39 dnl Set it now, allowing it to be changed later.
40 if echo a | ($GREP -E '(a|b)') >/dev/null 2>&1; then
41 AC_MSG_CHECKING([for egrep])
43 AC_MSG_RESULT([$EGREP])
45 AC_PATH_PROG([EGREP], [egrep], [not_found],
46 [$PATH:/usr/bin:/usr/local/bin])
48 if test -z "$EGREP" || test "$EGREP" = "not_found"; then
49 AC_MSG_ERROR([egrep not found in PATH. Cannot continue without egrep.])
53 dnl AR is mandatory for configure process and libtool.
54 dnl This is target dependant, so check it as a tool.
55 AC_PATH_TOOL([AR], [ar], [not_found],
56 [$PATH:/usr/bin:/usr/local/bin])
57 if test -z "$AR" || test "$AR" = "not_found"; then
58 AC_MSG_ERROR([ar not found in PATH. Cannot continue without ar.])
62 dnl Fetch c-ares version from ares_version.h
63 VERSION=`$SED -ne 's/^#define ARES_VERSION_STR "\(.*\)"/\1/p' ${srcdir}/ares_version.h`
64 AM_INIT_AUTOMAKE([c-ares], [$VERSION])
65 AC_MSG_CHECKING([c-ares version])
66 AC_MSG_RESULT([$VERSION])
69 dnl Detect the canonical host and target build environment
73 dnl Get system canonical name
74 AC_DEFINE_UNQUOTED(OS, "${host}", [cpu-machine-OS])
80 dnl This defines _ALL_SOURCE for AIX
81 CARES_CHECK_AIX_ALL_SOURCE
83 dnl Our configure and build reentrant settings
84 CARES_CONFIGURE_REENTRANT
86 dnl check for how to do large files
91 AC_DEFINE(ETC_INET, 1, [if a /etc/inet dir is being used])
95 dnl support building of Windows DLLs
98 dnl force libtool to build static libraries with PIC on AMD64-Linux & FreeBSD
99 AC_MSG_CHECKING([if arch-OS host is AMD64-Linux/FreeBSD (to build static libraries with PIC)])
101 x86_64*linux*|amd64*freebsd*|ia64*freebsd*)
113 dnl **********************************************************************
114 dnl platform/compiler/architecture specific checks/flags
115 dnl **********************************************************************
118 CARES_SET_COMPILER_BASIC_OPTS
119 CARES_SET_COMPILER_DEBUG_OPTS
120 CARES_SET_COMPILER_OPTIMIZE_OPTS
121 CARES_SET_COMPILER_WARNING_OPTS
125 x86_64*linux*|amd64*freebsd*|ia64*freebsd*)
127 if test "$compiler_id" = "INTEL_UNIX_C"; then
129 if test "$compiler_num" -ge "900" &&
130 test "$compiler_num" -lt "1000"; then
132 CFLAGS="$CFLAGS -i-dynamic"
135 if test "$compiler_num" -ge "1000"; then
136 dnl icc 10.X or later
137 CFLAGS="$CFLAGS -shared-intel"
145 CARES_CHECK_COMPILER_HALT_ON_ERROR
146 CARES_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE
148 CARES_CHECK_NO_UNDEFINED
149 AM_CONDITIONAL(NO_UNDEFINED, test x$need_no_undefined = xyes)
151 CARES_CHECK_CURLDEBUG
152 AM_CONDITIONAL(CURLDEBUG, test x$want_curldebug = xyes)
154 dnl **********************************************************************
155 dnl Compilation based checks should not be done before this point.
156 dnl **********************************************************************
158 dnl **********************************************************************
159 dnl Make sure that our checks for headers windows.h winsock.h winsock2.h
160 dnl and ws2tcpip.h take precedence over any other further checks which
161 dnl could be done later using AC_CHECK_HEADER or AC_CHECK_HEADERS for
162 dnl this specific header files. And do them before its results are used.
163 dnl **********************************************************************
165 CURL_CHECK_HEADER_WINDOWS
166 CURL_CHECK_NATIVE_WINDOWS
167 case X-"$ac_cv_native_windows" in
169 CURL_CHECK_HEADER_WINSOCK
170 CURL_CHECK_HEADER_WINSOCK2
171 CURL_CHECK_HEADER_WS2TCPIP
174 ac_cv_header_winsock_h="no"
175 ac_cv_header_winsock2_h="no"
176 ac_cv_header_ws2tcpip_h="no"
180 dnl **********************************************************************
181 dnl Checks for libraries.
182 dnl **********************************************************************
186 dnl gethostbyname without lib or in the nsl lib?
187 AC_CHECK_FUNC(gethostbyname,
188 [HAVE_GETHOSTBYNAME="1"
190 [ AC_CHECK_LIB(nsl, gethostbyname,
191 [HAVE_GETHOSTBYNAME="1"
196 if test "$HAVE_GETHOSTBYNAME" != "1"
198 dnl gethostbyname in the socket lib?
199 AC_CHECK_LIB(socket, gethostbyname,
200 [HAVE_GETHOSTBYNAME="1"
201 LIBS="$LIBS -lsocket"
205 dnl At least one system has been identified to require BOTH nsl and socket
206 dnl libs at the same time to link properly.
207 if test "$HAVE_GETHOSTBYNAME" != "1"
209 AC_MSG_CHECKING([for gethostbyname with both nsl and socket libs])
210 my_ac_save_LIBS=$LIBS
211 LIBS="-lnsl -lsocket $LIBS"
219 HAVE_GETHOSTBYNAME="1"
222 LIBS=$my_ac_save_LIBS
226 if test "$HAVE_GETHOSTBYNAME" != "1"
228 dnl This is for winsock systems
229 if test "$ac_cv_header_windows_h" = "yes"; then
230 if test "$ac_cv_header_winsock_h" = "yes"; then
233 winsock_LIB="-lwinsock"
236 winsock_LIB="-lwsock32"
240 if test "$ac_cv_header_winsock2_h" = "yes"; then
241 winsock_LIB="-lws2_32"
243 if test ! -z "$winsock_LIB"; then
244 my_ac_save_LIBS=$LIBS
245 LIBS="$winsock_LIB $LIBS"
246 AC_MSG_CHECKING([for gethostbyname in $winsock_LIB])
249 #ifdef HAVE_WINDOWS_H
250 #ifndef WIN32_LEAN_AND_MEAN
251 #define WIN32_LEAN_AND_MEAN
254 #ifdef HAVE_WINSOCK2_H
255 #include <winsock2.h>
257 #ifdef HAVE_WINSOCK_H
263 gethostbyname("www.dummysite.com");
267 HAVE_GETHOSTBYNAME="1"
271 LIBS=$my_ac_save_LIBS
277 if test "$HAVE_GETHOSTBYNAME" != "1"
279 dnl This is for Minix 3.1
280 AC_MSG_CHECKING([for gethostbyname for Minix 3])
283 /* Older Minix versions may need <net/gen/netdb.h> here instead */
286 gethostbyname("www.dummysite.com");
290 HAVE_GETHOSTBYNAME="1"
296 if test "$HAVE_GETHOSTBYNAME" != "1"
298 dnl This is for eCos with a stubbed DNS implementation
299 AC_MSG_CHECKING([for gethostbyname for eCos])
305 gethostbyname("www.dummysite.com");
309 HAVE_GETHOSTBYNAME="1"
315 if test "$HAVE_GETHOSTBYNAME" != "1"
317 dnl gethostbyname in the net lib - for BeOS
318 AC_CHECK_LIB(net, gethostbyname,
319 [HAVE_GETHOSTBYNAME="1"
325 if test "$HAVE_GETHOSTBYNAME" != "1"; then
326 AC_MSG_ERROR([couldn't find libraries for gethostbyname()])
330 AC_CHECK_FUNC(strcasecmp, , [ AC_CHECK_LIB(resolve, strcasecmp) ])
332 if test "$ac_cv_lib_resolve_strcasecmp" = "$ac_cv_func_strcasecmp"; then
333 AC_CHECK_LIB(resolve, strcasecmp,
334 [LIBS="-lresolve $LIBS"],
338 ac_cv_func_strcasecmp="no"
341 AC_CHECK_FUNC(connect, , [ AC_CHECK_LIB(socket, connect) ])
343 dnl **********************************************************************
344 dnl In case that function clock_gettime with monotonic timer is available,
345 dnl check for additional required libraries.
346 dnl **********************************************************************
347 CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC
349 AC_MSG_CHECKING([whether to use libgcc])
350 AC_ARG_ENABLE(libgcc,
351 AC_HELP_STRING([--enable-libgcc],[use libgcc when linking]),
352 [ case "$enableval" in
364 dnl Default is to try the thread-safe versions of a few functions
367 dnl detect AIX 4.3 or later
368 AC_MSG_CHECKING([AIX 4.3 or later])
370 #if defined(_AIX) && defined(_AIX43)
373 #error "this is not AIX 4.3 or later"
376 [ AC_MSG_RESULT([yes])
379 [ AC_MSG_RESULT([no]) ]
382 AC_ARG_ENABLE(thread,dnl
383 AC_HELP_STRING([--disable-thread],[don't look for thread-safe functions])
384 AC_HELP_STRING([--enable-thread],[look for thread-safe functions]),
385 [ case "$enableval" in
388 AC_MSG_WARN(c-ares will not get built using thread-safe functions)
396 if test X"$OPT_THREAD" = Xoff
398 AC_DEFINE(DISABLED_THREADSAFE, 1,
399 [Set to explicitly specify we don't want to use thread-safe functions])
402 dnl for recent AIX versions, we skip all the thread-safe checks above since
403 dnl they claim a thread-safe libc using the standard API. But there are
404 dnl some functions still not thread-safe. Check for these!
406 dnl Let's hope this split URL remains working:
407 dnl http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/aixprggd/ \
408 dnl genprogc/thread_quick_ref.htm
410 if test "x$RECENTAIX" = "xyes"; then
412 AC_DEFINE(_THREAD_SAFE, 1, [define this if you need it to compile thread-safe code])
417 dnl **********************************************************************
418 dnl Back to "normal" configuring
419 dnl **********************************************************************
421 dnl Checks for header files.
424 CURL_CHECK_HEADER_MALLOC
425 CURL_CHECK_HEADER_MEMORY
427 dnl check for a few basic system headers we need
447 arpa/nameser_compat.h \
449 dnl to do if not found
455 #ifdef HAVE_SYS_TYPES_H
456 #include <sys/types.h>
458 #ifdef HAVE_SYS_TIME_H
459 #include <sys/time.h>
461 dnl We do this default-include simply to make sure that the nameser_compat.h
462 dnl header *REALLY* can be include after the new nameser.h. It seems AIX 5.1
463 dnl (and others?) is not designed to allow this.
464 #ifdef HAVE_ARPA_NAMESER_H
465 #include <arpa/nameser.h>
468 dnl *Sigh* these are needed in order for net/if.h to get properly detected.
469 #ifdef HAVE_SYS_SOCKET_H
470 #include <sys/socket.h>
472 #ifdef HAVE_NETINET_IN_H
473 #include <netinet/in.h>
478 dnl Checks for typedefs, structures, and compiler characteristics.
482 CURL_CHECK_STRUCT_TIMEVAL
484 AC_CHECK_SIZEOF(size_t)
486 AC_CHECK_SIZEOF(long)
488 AC_CHECK_SIZEOF(time_t)
490 AC_CHECK_TYPE(long long,
491 [AC_DEFINE(HAVE_LONGLONG, 1,
492 [Define to 1 if the compiler supports the 'long long' data type.])]
496 if test "xyes" = "x$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_FCNTL
540 CARES_CHECK_FUNC_FREEADDRINFO
541 CARES_CHECK_FUNC_GETADDRINFO
542 CARES_CHECK_FUNC_GETHOSTBYADDR
543 CARES_CHECK_FUNC_GETHOSTBYNAME
544 CARES_CHECK_FUNC_GETHOSTNAME
545 CARES_CHECK_FUNC_GETSERVBYPORT_R
546 CARES_CHECK_FUNC_INET_NTOP
547 CARES_CHECK_FUNC_INET_PTON
548 CARES_CHECK_FUNC_IOCTL
549 CARES_CHECK_FUNC_IOCTLSOCKET
550 CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL
551 CARES_CHECK_FUNC_SETSOCKOPT
552 CARES_CHECK_FUNC_SOCKET
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])