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 AC_CONFIG_SRCDIR([ares_ipv6.h])
8 AM_CONFIG_HEADER([config.h])
11 dnl SED is mandatory for configure process and libtool.
12 dnl Set it now, allowing it to be changed later.
13 AC_PATH_PROG([SED], [sed], [not_found],
14 [$PATH:/usr/bin:/usr/local/bin])
15 if test -z "$SED" || test "$SED" = "not_found"; then
16 AC_MSG_ERROR([sed not found in PATH. Cannot continue without sed.])
20 dnl GREP is mandatory for configure process and libtool.
21 dnl Set it now, allowing it to be changed later.
22 AC_PATH_PROG([GREP], [grep], [not_found],
23 [$PATH:/usr/bin:/usr/local/bin])
24 if test -z "$GREP" || test "$GREP" = "not_found"; then
25 AC_MSG_ERROR([grep not found in PATH. Cannot continue without grep.])
29 dnl EGREP is mandatory for configure process and libtool.
30 dnl Set it now, allowing it to be changed later.
31 if echo a | ($GREP -E '(a|b)') >/dev/null 2>&1; then
32 AC_MSG_CHECKING([for egrep])
34 AC_MSG_RESULT([$EGREP])
36 AC_PATH_PROG([EGREP], [egrep], [not_found],
37 [$PATH:/usr/bin:/usr/local/bin])
39 if test -z "$EGREP" || test "$EGREP" = "not_found"; then
40 AC_MSG_ERROR([egrep not found in PATH. Cannot continue without egrep.])
44 dnl AR is mandatory for configure process and libtool.
45 dnl This is target dependant, so check it as a tool.
46 AC_PATH_TOOL([AR], [ar], [not_found],
47 [$PATH:/usr/bin:/usr/local/bin])
48 if test -z "$AR" || test "$AR" = "not_found"; then
49 AC_MSG_ERROR([ar not found in PATH. Cannot continue without ar.])
53 dnl Fetch c-ares version from ares_version.h
54 VERSION=`$SED -ne 's/^#define ARES_VERSION_STR "\(.*\)"/\1/p' ${srcdir}/ares_version.h`
55 AM_INIT_AUTOMAKE([c-ares], [$VERSION])
56 AC_MSG_CHECKING([c-ares version])
57 AC_MSG_RESULT([$VERSION])
60 dnl Detect the canonical host and target build environment
64 dnl Get system canonical name
65 AC_DEFINE_UNQUOTED(OS, "${host}", [cpu-machine-OS])
71 dnl This defines _ALL_SOURCE for AIX
72 CARES_CHECK_AIX_ALL_SOURCE
74 dnl Our configure and build reentrant settings
75 CARES_CONFIGURE_REENTRANT
77 dnl check for how to do large files
82 AC_DEFINE(ETC_INET, 1, [if a /etc/inet dir is being used])
86 dnl support building of Windows DLLs
89 dnl ************************************************************
90 dnl Option to switch on debug options. This makes an assumption that
91 dnl this is built as an 'ares' subdir in the curl source tree. Subject for
92 dnl improval in the future!
94 AC_MSG_CHECKING([whether to enable debug options])
96 AC_HELP_STRING([--enable-debug],[Enable pedantic debug options])
97 AC_HELP_STRING([--disable-debug],[Disable debug options]),
98 [ case "$enableval" in
102 *) AC_MSG_RESULT(yes)
104 dnl when doing the debug stuff, use static library only
109 dnl the entire --enable-debug is a hack that lives and runs on top of
110 dnl libcurl stuff so this BUILDING_LIBCURL is not THAT much uglier
111 AC_DEFINE(BUILDING_LIBCURL, 1, [when building as static part of libcurl])
113 CPPFLAGS="$CPPFLAGS -DCURLDEBUG -I$srcdir/../include"
116 dnl set compiler "debug" options to become more picky, and remove
117 dnl optimize options from CFLAGS
124 AM_CONDITIONAL(DEBUGBUILD, test x$debugbuild = xyes)
125 AM_CONDITIONAL(CURLDEBUG, test x$debugbuild = xyes)
127 dnl skip libtool C++ and Fortran compiler checks
128 m4_ifdef([AC_PROG_CXX], [m4_undefine([AC_PROG_CXX])])
129 m4_defun([AC_PROG_CXX],[])
130 m4_ifdef([AC_PROG_CXXCPP], [m4_undefine([AC_PROG_CXXCPP])])
131 m4_defun([AC_PROG_CXXCPP],[true])
132 m4_ifdef([AC_PROG_F77], [m4_undefine([AC_PROG_F77])])
133 m4_defun([AC_PROG_F77],[])
135 dnl skip libtool C++ and Fortran linker checks
136 m4_ifdef([AC_LIBTOOL_CXX], [m4_undefine([AC_LIBTOOL_CXX])])
137 m4_defun([AC_LIBTOOL_CXX],[])
138 m4_ifdef([AC_LIBTOOL_CXXCPP], [m4_undefine([AC_LIBTOOL_CXXCPP])])
139 m4_defun([AC_LIBTOOL_CXXCPP],[true])
140 m4_ifdef([AC_LIBTOOL_F77], [m4_undefine([AC_LIBTOOL_F77])])
141 m4_defun([AC_LIBTOOL_F77],[])
143 dnl force libtool to build static libraries with PIC on AMD64-linux
144 AC_MSG_CHECKING([if arch-OS host is AMD64-linux (to build static libraries with PIC)])
158 AC_MSG_CHECKING([if we need -no-undefined])
160 *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
161 need_no_undefined=yes
167 AC_MSG_RESULT($need_no_undefined)
168 AM_CONDITIONAL(NO_UNDEFINED, test x$need_no_undefined = xyes)
170 dnl **********************************************************************
171 dnl platform/compiler/architecture specific checks/flags
172 dnl **********************************************************************
178 dnl find out if icc is being used
179 if test "z$ICC" = "z"; then
183 if test "$ICC" = "yes"; then
184 dnl figure out icc version
185 AC_MSG_CHECKING([icc version])
186 iccver=`$CC -dumpversion`
187 iccnhi=`echo $iccver | cut -d . -f1`
188 iccnlo=`echo $iccver | cut -d . -f2`
189 iccnum=`(expr $iccnhi "*" 100 + $iccnlo) 2>/dev/null`
190 AC_MSG_RESULT($iccver)
192 if test "$iccnum" -ge "900" && test "$iccnum" -lt "1000"; then
194 CFLAGS="$CFLAGS -i-dynamic"
197 if test "$iccnum" -ge "1000"; then
198 dnl icc 10.X or later
199 CFLAGS="$CFLAGS -shared-intel"
207 AC_MSG_CHECKING([whether we are using the IBM C compiler])
208 CURL_CHECK_DEF([__IBMC__], [], [silent])
209 if test "$curl_cv_have_def___IBMC__" = "yes"; then
211 dnl Ensure that compiler optimizations are always thread-safe.
212 CFLAGS="$CFLAGS -qthreaded"
213 dnl Disable type based strict aliasing optimizations, using worst
214 dnl case aliasing assumptions when compiling. Type based aliasing
215 dnl would restrict the lvalues that could be safely used to access
217 CFLAGS="$CFLAGS -qnoansialias"
218 dnl Force compiler to stop after the compilation phase, without
219 dnl generating an object code file when compilation has errors.
220 CFLAGS="$CFLAGS -qhalt=e"
225 AC_MSG_CHECKING([whether we are using the Intel C compiler])
226 CURL_CHECK_DEF([__INTEL_COMPILER], [], [silent])
227 if test "$curl_cv_have_def___INTEL_COMPILER" = "yes"; then
229 dnl On Linux this compiler uses gcc's header files, so
230 dnl we select ANSI C89 dialect plus GNU extensions.
231 CPPFLAGS="$CPPFLAGS -std=gnu89"
232 if test "$curl_cv_def___INTEL_COMPILER" -gt "600"; then
233 dnl Show errors, warnings, and remarks
234 CPPFLAGS="$CPPFLAGS -Wall"
235 dnl Perform extra compile-time code checking
236 CPPFLAGS="$CPPFLAGS -Wcheck"
238 dnl Change some warnings into errors
239 dnl #140: too many arguments in function call
240 dnl #147: declaration is incompatible with 'previous one'
241 dnl #165: too few arguments in function call
242 dnl #266: function declared implicitly
243 CPPFLAGS="$CPPFLAGS -we 140,147,165,266"
244 dnl Disable some remarks
245 dnl #279: controlling expression is constant
246 dnl #981: operands are evaluated in unspecified order
247 dnl #1469: "cc" clobber ignored
248 if test "$curl_cv_def___INTEL_COMPILER" -lt "910"; then
249 CPPFLAGS="$CPPFLAGS -wd 279"
251 CPPFLAGS="$CPPFLAGS -wd 981,1469"
252 dnl Disable use of ANSI C aliasing rules in optimizations
253 CFLAGS="$CFLAGS -no-ansi-alias"
254 dnl Disable floating point optimizations
255 CFLAGS="$CFLAGS -fp-model precise -mp"
260 AC_MSG_CHECKING([whether we are using the DEC/Compaq C compiler])
261 CURL_CHECK_DEF([__DECC], [], [silent])
262 CURL_CHECK_DEF([__DECC_VER], [], [silent])
263 if test "$curl_cv_have_def___DECC" = "yes" &&
264 test "$curl_cv_have_def___DECC_VER" = "yes"; then
266 dnl Select strict ANSI C compiler mode
267 CFLAGS="$CFLAGS -std1"
268 dnl Turn off optimizer ANSI C aliasing rules
269 CFLAGS="$CFLAGS -noansi_alias"
270 dnl Select a higher warning level than default level2
271 CFLAGS="$CFLAGS -msg_enable level3"
272 dnl Generate warnings for missing function prototypes
273 CFLAGS="$CFLAGS -warnprotos"
274 dnl Change some warnings into fatal errors
275 CFLAGS="$CFLAGS -msg_fatal toofewargs,toomanyargs"
280 CURL_CHECK_COMPILER_HALT_ON_ERROR
281 CURL_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE
283 dnl **********************************************************************
284 dnl Compilation based checks should not be done before this point.
285 dnl **********************************************************************
287 dnl **********************************************************************
288 dnl Make sure that our checks for headers windows.h winsock.h winsock2.h
289 dnl and ws2tcpip.h take precedence over any other further checks which
290 dnl could be done later using AC_CHECK_HEADER or AC_CHECK_HEADERS for
291 dnl this specific header files. And do them before its results are used.
292 dnl **********************************************************************
294 CURL_CHECK_HEADER_WINDOWS
295 CURL_CHECK_NATIVE_WINDOWS
296 case X-"$ac_cv_native_windows" in
298 CURL_CHECK_HEADER_WINSOCK
299 CURL_CHECK_HEADER_WINSOCK2
300 CURL_CHECK_HEADER_WS2TCPIP
303 ac_cv_header_winsock_h="no"
304 ac_cv_header_winsock2_h="no"
305 ac_cv_header_ws2tcpip_h="no"
309 dnl **********************************************************************
310 dnl Checks for libraries.
311 dnl **********************************************************************
313 dnl gethostbyname without lib or in the nsl lib?
314 AC_CHECK_FUNC(gethostbyname,
315 [HAVE_GETHOSTBYNAME="1"
317 [ AC_CHECK_LIB(nsl, gethostbyname,
318 [HAVE_GETHOSTBYNAME="1"
323 if test "$HAVE_GETHOSTBYNAME" != "1"
325 dnl gethostbyname in the socket lib?
326 AC_CHECK_LIB(socket, gethostbyname,
327 [HAVE_GETHOSTBYNAME="1"
328 LIBS="$LIBS -lsocket"
332 dnl At least one system has been identified to require BOTH nsl and socket
333 dnl libs at the same time to link properly.
334 if test "$HAVE_GETHOSTBYNAME" != "1"
336 AC_MSG_CHECKING([for gethostbyname with both nsl and socket libs])
337 my_ac_save_LIBS=$LIBS
338 LIBS="-lnsl -lsocket $LIBS"
346 HAVE_GETHOSTBYNAME="1"
349 LIBS=$my_ac_save_LIBS
353 if test "$HAVE_GETHOSTBYNAME" != "1"
355 dnl This is for winsock systems
356 if test "$ac_cv_header_windows_h" = "yes"; then
357 if test "$ac_cv_header_winsock_h" = "yes"; then
360 winsock_LIB="-lwinsock"
363 winsock_LIB="-lwsock32"
367 if test "$ac_cv_header_winsock2_h" = "yes"; then
368 winsock_LIB="-lws2_32"
370 if test ! -z "$winsock_LIB"; then
371 my_ac_save_LIBS=$LIBS
372 LIBS="$winsock_LIB $LIBS"
373 AC_MSG_CHECKING([for gethostbyname in $winsock_LIB])
376 #ifdef HAVE_WINDOWS_H
377 #ifndef WIN32_LEAN_AND_MEAN
378 #define WIN32_LEAN_AND_MEAN
381 #ifdef HAVE_WINSOCK2_H
382 #include <winsock2.h>
384 #ifdef HAVE_WINSOCK_H
390 gethostbyname("www.dummysite.com");
394 HAVE_GETHOSTBYNAME="1"
398 LIBS=$my_ac_save_LIBS
404 if test "$HAVE_GETHOSTBYNAME" != "1"
406 dnl This is for Minix 3.1
407 AC_MSG_CHECKING([for gethostbyname for Minix 3])
410 /* Older Minix versions may need <net/gen/netdb.h> here instead */
413 gethostbyname("www.dummysite.com");
417 HAVE_GETHOSTBYNAME="1"
423 if test "$HAVE_GETHOSTBYNAME" != "1"
425 dnl This is for eCos with a stubbed DNS implementation
426 AC_MSG_CHECKING([for gethostbyname for eCos])
432 gethostbyname("www.dummysite.com");
436 HAVE_GETHOSTBYNAME="1"
442 if test "$HAVE_GETHOSTBYNAME" != "1"
444 dnl gethostbyname in the net lib - for BeOS
445 AC_CHECK_LIB(net, gethostbyname,
446 [HAVE_GETHOSTBYNAME="1"
452 if test "$HAVE_GETHOSTBYNAME" = "1"; then
453 AC_DEFINE(HAVE_GETHOSTBYNAME, 1, [If you have gethostbyname])
455 AC_MSG_ERROR([couldn't find libraries for gethostbyname()])
459 AC_CHECK_FUNC(strcasecmp, , [ AC_CHECK_LIB(resolve, strcasecmp) ])
461 if test "$ac_cv_lib_resolve_strcasecmp" = "$ac_cv_func_strcasecmp"; then
462 AC_CHECK_LIB(resolve, strcasecmp,
463 [LIBS="-lresolve $LIBS"],
467 ac_cv_func_strcasecmp="no"
470 AC_CHECK_FUNC(connect, , [ AC_CHECK_LIB(socket, connect) ])
472 dnl **********************************************************************
473 dnl In case that function clock_gettime with monotonic timer is available,
474 dnl check for additional required libraries.
475 dnl **********************************************************************
476 CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC
478 AC_MSG_CHECKING([whether to use libgcc])
479 AC_ARG_ENABLE(libgcc,
480 AC_HELP_STRING([--enable-libgcc],[use libgcc when linking]),
481 [ case "$enableval" in
493 dnl Default is to try the thread-safe versions of a few functions
496 dnl detect AIX 4.3 or later
497 AC_MSG_CHECKING([AIX 4.3 or later])
499 #if defined(_AIX) && defined(_AIX43)
502 #error "this is not AIX 4.3 or later"
505 [ AC_MSG_RESULT([yes])
508 [ AC_MSG_RESULT([no]) ]
511 AC_ARG_ENABLE(thread,dnl
512 AC_HELP_STRING([--disable-thread],[don't look for thread-safe functions])
513 AC_HELP_STRING([--enable-thread],[look for thread-safe functions]),
514 [ case "$enableval" in
517 AC_MSG_WARN(c-ares will not get built using thread-safe functions)
525 if test X"$OPT_THREAD" = Xoff
527 AC_DEFINE(DISABLED_THREADSAFE, 1,
528 [Set to explicitly specify we don't want to use thread-safe functions])
531 dnl for recent AIX versions, we skip all the thread-safe checks above since
532 dnl they claim a thread-safe libc using the standard API. But there are
533 dnl some functions still not thread-safe. Check for these!
535 dnl Let's hope this split URL remains working:
536 dnl http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/aixprggd/ \
537 dnl genprogc/thread_quick_ref.htm
539 if test "x$RECENTAIX" = "xyes"; then
541 AC_DEFINE(_THREAD_SAFE, 1, [define this if you need it to compile thread-safe code])
546 dnl **********************************************************************
547 dnl Back to "normal" configuring
548 dnl **********************************************************************
550 dnl Checks for header files.
553 CURL_CHECK_HEADER_MALLOC
555 dnl check for a few basic system headers we need
573 arpa/nameser_compat.h \
575 dnl to do if not found
581 #ifdef HAVE_SYS_TYPES_H
582 #include <sys/types.h>
584 #ifdef HAVE_SYS_TIME_H
585 #include <sys/time.h>
587 dnl We do this default-include simply to make sure that the nameser_compat.h
588 dnl header *REALLY* can be include after the new nameser.h. It seems AIX 5.1
589 dnl (and others?) is not designed to allow this.
590 #ifdef HAVE_ARPA_NAMESER_H
591 #include <arpa/nameser.h>
594 dnl *Sigh* these are needed in order for net/if.h to get properly detected.
595 #ifdef HAVE_SYS_SOCKET_H
596 #include <sys/socket.h>
598 #ifdef HAVE_NETINET_IN_H
599 #include <netinet/in.h>
604 dnl Checks for typedefs, structures, and compiler characteristics.
608 CURL_CHECK_STRUCT_TIMEVAL
610 AC_CHECK_SIZEOF(size_t)
611 AC_CHECK_SIZEOF(long)
612 AC_CHECK_SIZEOF(time_t)
614 AC_CHECK_TYPE(long long,
615 [AC_DEFINE(HAVE_LONGLONG, 1,
616 [Define to 1 if the compiler supports the 'long long' data type.])]
620 if test "xyes" = "x$longlong"; then
621 AC_MSG_CHECKING([if numberLL works])
622 AC_COMPILE_IFELSE([long long val = 1000LL;],
623 [AC_DEFINE(HAVE_LL, 1, [if your compiler supports LL])]
631 AC_CHECK_TYPE(ssize_t, ,
632 AC_DEFINE(ssize_t, int, [the signed version of size_t]))
634 # check for bool type
635 AC_CHECK_TYPE([bool],[
636 AC_DEFINE(HAVE_BOOL_T, 1,
637 [Define to 1 if bool is an available type.])
639 #ifdef HAVE_SYS_TYPES_H
640 #include <sys/types.h>
642 #ifdef HAVE_STDBOOL_H
647 # Check for socklen_t or equivalent
648 CURL_CHECK_TYPE_SOCKLEN_T
652 TYPE_SOCKADDR_STORAGE
659 CURL_CHECK_FUNC_RECVFROM
661 CURL_CHECK_MSG_NOSIGNAL
663 CARES_CHECK_FUNC_GETHOSTNAME
664 CARES_CHECK_FUNC_GETSERVBYPORT_R
665 CARES_CHECK_FUNC_INET_NTOP
666 CARES_CHECK_FUNC_INET_PTON
667 CARES_CHECK_FUNC_STRCASECMP
668 CARES_CHECK_FUNC_STRCMPI
669 CARES_CHECK_FUNC_STRDUP
670 CARES_CHECK_FUNC_STRICMP
671 CARES_CHECK_FUNC_STRNCASECMP
672 CARES_CHECK_FUNC_STRNCMPI
673 CARES_CHECK_FUNC_STRNICMP
674 CARES_CHECK_FUNC_WRITEV
677 dnl check for AF_INET6
678 CARES_CHECK_CONSTANT(
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>
690 #ifdef HAVE_SYS_TYPES_H
691 #include <sys/types.h>
693 #ifdef HAVE_SYS_SOCKET_H
694 #include <sys/socket.h>
698 AC_DEFINE_UNQUOTED(HAVE_PF_INET6,1,[Define to 1 if you have PF_INET6.])
701 dnl check for PF_INET6
702 CARES_CHECK_CONSTANT(
705 #ifdef HAVE_WINDOWS_H
706 #ifndef WIN32_LEAN_AND_MEAN
707 #define WIN32_LEAN_AND_MEAN
710 #ifdef HAVE_WINSOCK2_H
711 #include <winsock2.h>
714 #ifdef HAVE_SYS_TYPES_H
715 #include <sys/types.h>
717 #ifdef HAVE_SYS_SOCKET_H
718 #include <sys/socket.h>
722 AC_DEFINE_UNQUOTED(HAVE_AF_INET6,1,[Define to 1 if you have AF_INET6.])
726 dnl check for the in6_addr structure
730 #ifdef HAVE_WINDOWS_H
731 #ifndef WIN32_LEAN_AND_MEAN
732 #define WIN32_LEAN_AND_MEAN
735 #ifdef HAVE_WINSOCK2_H
736 #include <winsock2.h>
737 #ifdef HAVE_WS2TCPIP_H
738 #include <ws2tcpip.h>
742 #ifdef HAVE_SYS_TYPES_H
743 #include <sys/types.h>
745 #ifdef HAVE_NETINET_IN_H
746 #include <netinet/in.h>
750 AC_DEFINE_UNQUOTED(HAVE_STRUCT_IN6_ADDR,1,[Define to 1 if you have struct in6_addr.])
753 dnl check for the sockaddr_in6 structure
757 #ifdef HAVE_WINDOWS_H
758 #ifndef WIN32_LEAN_AND_MEAN
759 #define WIN32_LEAN_AND_MEAN
762 #ifdef HAVE_WINSOCK2_H
763 #include <winsock2.h>
764 #ifdef HAVE_WS2TCPIP_H
765 #include <ws2tcpip.h>
769 #ifdef HAVE_SYS_TYPES_H
770 #include <sys/types.h>
772 #ifdef HAVE_NETINET_IN_H
773 #include <netinet/in.h>
777 AC_DEFINE_UNQUOTED(HAVE_STRUCT_SOCKADDR_IN6,1,
778 [Define to 1 if you have struct sockaddr_in6.]) ac_have_sockaddr_in6=yes
781 AC_CHECK_MEMBER(struct sockaddr_in6.sin6_scope_id,
782 AC_DEFINE_UNQUOTED(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID,1,
783 [Define to 1 if your struct sockaddr_in6 has sin6_scope_id.])
787 #ifdef HAVE_WINDOWS_H
788 #ifndef WIN32_LEAN_AND_MEAN
789 #define WIN32_LEAN_AND_MEAN
792 #ifdef HAVE_WINSOCK2_H
793 #include <winsock2.h>
794 #ifdef HAVE_WS2TCPIP_H
795 #include <ws2tcpip.h>
799 #ifdef HAVE_SYS_TYPES_H
800 #include <sys/types.h>
802 #ifdef HAVE_NETINET_IN_H
803 #include <netinet/in.h>
808 dnl check for the addrinfo structure
809 AC_CHECK_MEMBER(struct addrinfo.ai_flags,
810 AC_DEFINE_UNQUOTED(HAVE_STRUCT_ADDRINFO,1,
811 [Define to 1 if you have struct addrinfo.]),,
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_NETINET_IN_H
830 #include <netinet/in.h>
832 #ifdef HAVE_SYS_SOCKET_H
833 #include <sys/socket.h>
843 AC_CHECK_FUNCS([bitncmp \
849 AC_MSG_CHECKING([deeper for $func])
857 eval "ac_cv_func_$func=yes"
858 AC_DEFINE_UNQUOTED([AS_TR_CPP([HAVE_$func])], [1],
859 [Define to 1 if you have the $func function.])
861 AC_MSG_RESULT([but still no])
866 dnl Check for inet_net_pton
867 AC_CHECK_FUNCS(inet_net_pton)
868 dnl Again, some systems have it, but not IPv6
869 if test "$ac_cv_func_inet_net_pton" = "yes" ; then
870 AC_MSG_CHECKING(if inet_net_pton supports IPv6)
873 #ifdef HAVE_SYS_TYPES_H
874 #include <sys/types.h>
876 #ifdef HAVE_SYS_SOCKET_H
877 #include <sys/socket.h>
879 #ifdef HAVE_NETINET_IN_H
880 #include <netinet/in.h>
884 struct in6_addr addr6;
885 if (inet_net_pton(AF_INET6, "::1", &addr6, sizeof(addr6)) < 1)
892 AC_DEFINE_UNQUOTED(HAVE_INET_NET_PTON_IPV6,1,[Define to 1 if inet_net_pton supports IPv6.])
893 ], AC_MSG_RESULT(no),AC_MSG_RESULT(no))
897 AC_CHECK_SIZEOF(struct in6_addr, ,
900 #ifdef HAVE_WINDOWS_H
901 #ifndef WIN32_LEAN_AND_MEAN
902 #define WIN32_LEAN_AND_MEAN
905 #ifdef HAVE_WINSOCK2_H
906 #include <winsock2.h>
907 #ifdef HAVE_WS2TCPIP_H
908 #include <ws2tcpip.h>
912 #ifdef HAVE_SYS_TYPES_H
913 #include <sys/types.h>
915 #ifdef HAVE_SYS_SOCKET_H
916 #include <sys/socket.h>
918 #ifdef HAVE_NETINET_IN_H
919 #include <netinet/in.h>
925 AC_CHECK_SIZEOF(struct in_addr, ,
928 #ifdef HAVE_WINDOWS_H
929 #ifndef WIN32_LEAN_AND_MEAN
930 #define WIN32_LEAN_AND_MEAN
933 #ifdef HAVE_WINSOCK2_H
934 #include <winsock2.h>
935 #ifdef HAVE_WS2TCPIP_H
936 #include <ws2tcpip.h>
940 #ifdef HAVE_SYS_TYPES_H
941 #include <sys/types.h>
943 #ifdef HAVE_SYS_SOCKET_H
944 #include <sys/socket.h>
946 #ifdef HAVE_NETINET_IN_H
947 #include <netinet/in.h>
954 dnl Check if the getnameinfo function is available
955 dnl and get the types of five of its arguments.
956 CURL_CHECK_FUNC_GETNAMEINFO
959 CURL_CHECK_NONBLOCKING_SOCKET
962 [AC_DEFINE(ARES_BIG_ENDIAN, 1,
963 [define this if ares is built for a big endian system])],
965 [AC_MSG_WARN([couldn't figure out endianess, assuming little endian!])]
968 dnl Check for user-specified random device
970 AC_HELP_STRING([--with-random=FILE],
971 [read randomness from FILE (default=/dev/urandom)]),
972 [ RANDOM_FILE="$withval" ],
974 dnl Check for random device. If we're cross compiling, we can't
975 dnl check, and it's better to assume it doesn't exist than it is
976 dnl to fail on AC_CHECK_FILE or later.
977 if test "$cross_compiling" = "no"; then
978 AC_CHECK_FILE("/dev/urandom", [ RANDOM_FILE="/dev/urandom"] )
980 AC_MSG_WARN([cannot check for /dev/urandom while cross compiling; assuming none])
985 if test -n "$RANDOM_FILE" && test X"$RANDOM_FILE" != Xno ; then
986 AC_SUBST(RANDOM_FILE)
987 AC_DEFINE_UNQUOTED(RANDOM_FILE, "$RANDOM_FILE",
988 [a suitable file/device to read random data from])
991 CARES_PRIVATE_LIBS="$LIBS"
992 AC_SUBST(CARES_PRIVATE_LIBS)
994 AC_CONFIG_FILES([Makefile libcares.pc])