dnl Process this file with autoconf to produce a configure script. AC_PREREQ(2.57) AC_INIT(ares_init.c) AC_CONFIG_SRCDIR([ares_ipv6.h]) AM_CONFIG_HEADER(config.h) AM_MAINTAINER_MODE AM_INIT_AUTOMAKE(c-ares, CVS) dnl dnl Detect the canonical host and target build environment dnl AC_CANONICAL_HOST dnl Get system canonical name AC_DEFINE_UNQUOTED(OS, "${host}", [cpu-machine-OS]) AC_AIX AC_PROG_CC AC_PROG_INSTALL case $host_os in solaris*) AC_DEFINE(ETC_INET, 1, [if a /etc/inet dir is being used]) ;; esac dnl support building of Windows DLLs AC_LIBTOOL_WIN32_DLL dnl ************************************************************ dnl Option to switch on debug options. This makes an assumption that dnl this is built as an 'ares' subdir in the curl source tree. Subject for dnl improval in the future! dnl AC_MSG_CHECKING([whether to enable debug options]) AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug],[Enable pedantic debug options]) AC_HELP_STRING([--disable-debug],[Disable debug options]), [ case "$enableval" in no) AC_MSG_RESULT(no) ;; *) AC_MSG_RESULT(yes) dnl when doing the debug stuff, use static library only AC_DISABLE_SHARED dnl the entire --enable-debug is a hack that lives and runs on top of dnl libcurl stuff so this BUILDING_LIBCURL is not THAT much uglier AC_DEFINE(BUILDING_LIBCURL, 1, [when building as static part of libcurl]) CPPFLAGS="$CPPFLAGS -DCURLDEBUG -I$srcdir/../include" CFLAGS="$CFLAGS -g" dnl check for how to do large files, needed to get the curl_off_t check dnl done right AC_SYS_LARGEFILE AC_CHECK_SIZEOF(curl_off_t, ,[ #include #include "$srcdir/../include/curl/curl.h" ]) dnl set compiler "debug" options to become more picky, and remove dnl optimize options from CFLAGS CURL_CC_DEBUG_OPTS ;; esac ], AC_MSG_RESULT(no) ) dnl skip libtool C++ and Fortran compiler checks m4_ifdef([AC_PROG_CXX], [m4_undefine([AC_PROG_CXX])]) m4_defun([AC_PROG_CXX],[]) m4_ifdef([AC_PROG_F77], [m4_undefine([AC_PROG_F77])]) m4_defun([AC_PROG_F77],[]) dnl skip libtool C++ and Fortran linker checks m4_ifdef([AC_LIBTOOL_CXX], [m4_undefine([AC_LIBTOOL_CXX])]) m4_defun([AC_LIBTOOL_CXX],[]) m4_ifdef([AC_LIBTOOL_F77], [m4_undefine([AC_LIBTOOL_F77])]) m4_defun([AC_LIBTOOL_F77],[]) dnl force libtool to build static libraries with PIC on AMD64-linux AC_MSG_CHECKING([if arch-OS host is AMD64-linux (to build static libraries with PIC)]) case $host in x86_64*linux*) AC_MSG_RESULT([yes]) with_pic=yes ;; *) AC_MSG_RESULT([no]) ;; esac dnl libtool setup AC_PROG_LIBTOOL AC_MSG_CHECKING([if we need -no-undefined]) case $host in *-*-cygwin | *-*-mingw* | *-*-pw32*) need_no_undefined=yes ;; *) need_no_undefined=no ;; esac AC_MSG_RESULT($need_no_undefined) AM_CONDITIONAL(NO_UNDEFINED, test x$need_no_undefined = xyes) dnl ********************************************************************** dnl check if this is the Intel ICC compiler, and if so make it stricter dnl (convert warning 147 into an error) so that it properly can detect the dnl gethostbyname_r() version dnl ********************************************************************** CURL_DETECT_ICC([CFLAGS="$CFLAGS -we 147"]) dnl ********************************************************************** dnl platform/compiler/architecture specific checks/flags dnl ********************************************************************** case $host in # x86_64*linux*) # dnl find out if icc is being used if test "z$ICC" = "z"; then CURL_DETECT_ICC fi # if test "$ICC" = "yes"; then dnl figure out icc version AC_MSG_CHECKING([icc version]) iccver=`$CC -dumpversion` iccnhi=`echo $iccver | cut -d . -f1` iccnlo=`echo $iccver | cut -d . -f2` iccnum=`(expr $iccnhi "*" 100 + $iccnlo) 2>/dev/null` AC_MSG_RESULT($iccver) # if test "$iccnum" -ge "900" && test "$iccnum" -lt "1000"; then dnl icc 9.X specific CFLAGS="$CFLAGS -i-dynamic" fi # if test "$iccnum" -ge "1000"; then dnl icc 10.X or later CFLAGS="$CFLAGS -shared-intel" fi # fi ;; # esac dnl ********************************************************************** dnl Checks for libraries. dnl ********************************************************************** dnl gethostbyname without lib or in the nsl lib? AC_CHECK_FUNC(gethostbyname, [HAVE_GETHOSTBYNAME="1" ], [ AC_CHECK_LIB(nsl, gethostbyname, [HAVE_GETHOSTBYNAME="1" LIBS="$LIBS -lnsl" ]) ]) if test "$HAVE_GETHOSTBYNAME" != "1" then dnl gethostbyname in the socket lib? AC_CHECK_LIB(socket, gethostbyname, [HAVE_GETHOSTBYNAME="1" LIBS="$LIBS -lsocket" ]) fi dnl At least one system has been identified to require BOTH nsl and socket dnl libs at the same time to link properly. if test "$HAVE_GETHOSTBYNAME" != "1" then AC_MSG_CHECKING([for gethostbyname with both nsl and socket libs]) my_ac_save_LIBS=$LIBS LIBS="-lnsl -lsocket $LIBS" AC_TRY_LINK( , [gethostbyname();], [ dnl found it! HAVE_GETHOSTBYNAME="1" AC_MSG_RESULT([yes])], [ dnl failed! AC_MSG_RESULT([no]) dnl restore LIBS LIBS=$my_ac_save_LIBS] ) fi if test "$HAVE_GETHOSTBYNAME" != "1" then dnl This is for Msys/Mingw AC_MSG_CHECKING([for gethostbyname in ws2_32]) my_ac_save_LIBS=$LIBS LIBS="-lws2_32 $LIBS" AC_TRY_LINK([#include ], [gethostbyname("www.dummysite.com");], [ dnl worked! ws2="yes" AC_MSG_RESULT([yes]) HAVE_GETHOSTBYNAME="1"], [ dnl failed, restore LIBS LIBS=$my_ac_save_LIBS AC_MSG_RESULT(no)] ) fi if test "$HAVE_GETHOSTBYNAME" != "1" then dnl This is for eCos with a stubbed DNS implementation AC_MSG_CHECKING([for gethostbyname for eCos]) AC_TRY_LINK([ #include #include ], [gethostbyname("www.dummysite.com");], [ dnl worked! AC_MSG_RESULT([yes]) HAVE_GETHOSTBYNAME="1"], AC_MSG_RESULT(no) ) fi if test "$HAVE_GETHOSTBYNAME" != "1" then dnl gethostbyname in the net lib - for BeOS AC_CHECK_LIB(net, gethostbyname, [HAVE_GETHOSTBYNAME="1" LIBS="$LIBS -lnet" ]) fi if test "$HAVE_GETHOSTBYNAME" = "1"; then AC_DEFINE(HAVE_GETHOSTBYNAME, 1, [If you have gethostbyname]) else AC_MSG_ERROR([couldn't find libraries for gethostbyname()]) fi dnl resolve lib? AC_CHECK_FUNC(strcasecmp, , [ AC_CHECK_LIB(resolve, strcasecmp) ]) if test "$ac_cv_lib_resolve_strcasecmp" = "$ac_cv_func_strcasecmp"; then AC_CHECK_LIB(resolve, strcasecmp, [LIBS="-lresolve $LIBS"], , -lnsl) fi dnl socket lib? AC_CHECK_FUNC(connect, , [ AC_CHECK_LIB(socket, connect) ]) AC_MSG_CHECKING([whether to use libgcc]) AC_ARG_ENABLE(libgcc, AC_HELP_STRING([--enable-libgcc],[use libgcc when linking]), [ case "$enableval" in yes) LIBS="$LIBS -lgcc" AC_MSG_RESULT(yes) ;; *) AC_MSG_RESULT(no) ;; esac ], AC_MSG_RESULT(no) ) dnl Default is to try the thread-safe versions of a few functions OPT_THREAD=on dnl detect AIX 4.3 or later AC_MSG_CHECKING([AIX 4.3 or later]) AC_PREPROC_IFELSE([ #if defined(_AIX) && defined(_AIX43) printf("just fine"); #else #error "this is not AIX 4.3 or later" #endif ], [ AC_MSG_RESULT([yes]) RECENTAIX=yes OPT_THREAD=off ], [ AC_MSG_RESULT([no]) ] ) AC_ARG_ENABLE(thread,dnl AC_HELP_STRING([--disable-thread],[don't look for thread-safe functions]) AC_HELP_STRING([--enable-thread],[look for thread-safe functions]), [ case "$enableval" in no) OPT_THREAD=off AC_MSG_WARN(c-ares will not get built using thread-safe functions) ;; *) ;; esac ] ) if test X"$OPT_THREAD" = Xoff then AC_DEFINE(DISABLED_THREADSAFE, 1, [Set to explicitly specify we don't want to use thread-safe functions]) fi dnl for recent AIX versions, we skip all the thread-safe checks above since dnl they claim a thread-safe libc using the standard API. But there are dnl some functions still not thread-safe. Check for these! dnl Let's hope this split URL remains working: dnl http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/aixprggd/ \ dnl genprogc/thread_quick_ref.htm if test "x$RECENTAIX" = "xyes"; then AC_DEFINE(_THREAD_SAFE, 1, [define this if you need it to compile thread-safe code]) dnl check if this is the IBM xlc compiler dnl Details thanks to => http://predef.sourceforge.net/ AC_MSG_CHECKING([if this is the xlc compiler]) AC_EGREP_CPP([^__xlC__], [__xlC__], dnl action if the text is found, this it has not been replaced by the dnl cpp XLC="no" AC_MSG_RESULT([no]), dnl the text was not found, it was replaced by the cpp XLC="yes" AC_MSG_RESULT([yes]) CFLAGS="$CFLAGS -qthreaded" dnl AIX xlc has to have strict aliasing turned off. If not, dnl the optimizer assumes that pointers can only point to dnl an object of the same type. CFLAGS="$CFLAGS -qnoansialias" ) fi dnl ********************************************************************** dnl Back to "normal" configuring dnl ********************************************************************** dnl Checks for header files. AC_HEADER_STDC dnl ********************************************************************** dnl Make sure that our checks for headers windows.h winsock.h winsock2.h dnl and ws2tcpip.h take precedence over any other further checks which dnl could be done later using AC_CHECK_HEADER or AC_CHECK_HEADERS for dnl this specific header files. And do them before its results are used. dnl ********************************************************************** CURL_CHECK_HEADER_WINDOWS CURL_CHECK_HEADER_WINSOCK CURL_CHECK_HEADER_WINSOCK2 CURL_CHECK_HEADER_WS2TCPIP CURL_CHECK_HEADER_MALLOC dnl check for a few basic system headers we need AC_CHECK_HEADERS( sys/types.h \ sys/time.h \ sys/select.h \ sys/socket.h \ sys/ioctl.h \ sys/param.h \ netdb.h \ netinet/in.h \ netinet/tcp.h \ net/if.h \ errno.h \ stdbool.h \ arpa/nameser.h \ arpa/nameser_compat.h \ arpa/inet.h, dnl to do if not found [], dnl to do if found [], dnl default includes [ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_TIME_H #include #endif dnl We do this default-include simply to make sure that the nameser_compat.h dnl header *REALLY* can be include after the new nameser.h. It seems AIX 5.1 dnl (and others?) is not designed to allow this. #ifdef HAVE_ARPA_NAMESER_H #include #endif dnl *Sigh* these are needed in order for net/if.h to get properly detected. #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif ] ) dnl Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_TYPE_SIZE_T AC_HEADER_TIME CURL_CHECK_STRUCT_TIMEVAL AC_CHECK_SIZEOF(size_t) AC_CHECK_SIZEOF(long) AC_CHECK_SIZEOF(time_t) AC_CHECK_TYPE(long long, [AC_DEFINE(HAVE_LONGLONG, 1, [if your compiler supports long long])] longlong="yes" ) if test "xyes" = "x$longlong"; then AC_MSG_CHECKING([if numberLL works]) AC_COMPILE_IFELSE([long long val = 1000LL;], [AC_DEFINE(HAVE_LL, 1, [if your compiler supports LL])] AC_MSG_RESULT(yes), AC_MSG_RESULT(no) ) fi # check for ssize_t AC_CHECK_TYPE(ssize_t, , AC_DEFINE(ssize_t, int, [the signed version of size_t])) # check for bool type AC_CHECK_TYPE([bool],[ AC_DEFINE(HAVE_BOOL_T, 1, [Define to 1 if bool is an available type.]) ], ,[ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_STDBOOL_H #include #endif ]) # Check for socklen_t or equivalent CURL_CHECK_TYPE_SOCKLEN_T TYPE_IN_ADDR_T TYPE_SOCKADDR_STORAGE TYPE_SIG_ATOMIC_T AC_TYPE_SIGNAL CURL_CHECK_FUNC_RECV CURL_CHECK_FUNC_SEND CURL_CHECK_MSG_NOSIGNAL dnl check for AF_INET6 CARES_CHECK_CONSTANT( [ #undef inline #ifdef HAVE_WINDOWS_H #ifndef WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN #endif #include #ifdef HAVE_WINSOCK2_H #include #endif #else #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #endif ], [PF_INET6], AC_DEFINE_UNQUOTED(HAVE_PF_INET6,1,[Define to 1 if you have PF_INET6.]) ) dnl check for PF_INET6 CARES_CHECK_CONSTANT( [ #undef inline #ifdef HAVE_WINDOWS_H #ifndef WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN #endif #include #ifdef HAVE_WINSOCK2_H #include #endif #else #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #endif ], [AF_INET6], AC_DEFINE_UNQUOTED(HAVE_AF_INET6,1,[Define to 1 if you have AF_INET6.]) ) dnl check for the in6_addr structure CARES_CHECK_STRUCT( [ #undef inline #ifdef HAVE_WINDOWS_H #ifndef WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN #endif #include #ifdef HAVE_WINSOCK2_H #include #ifdef HAVE_WS2TCPIP_H #include #endif #endif #else #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif #endif ], [in6_addr], AC_DEFINE_UNQUOTED(HAVE_STRUCT_IN6_ADDR,1,[Define to 1 if you have struct in6_addr.]) ) dnl check for the sockaddr_in6 structure CARES_CHECK_STRUCT( [ #undef inline #ifdef HAVE_WINDOWS_H #ifndef WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN #endif #include #ifdef HAVE_WINSOCK2_H #include #ifdef HAVE_WS2TCPIP_H #include #endif #endif #else #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif #endif ], [sockaddr_in6], AC_DEFINE_UNQUOTED(HAVE_STRUCT_SOCKADDR_IN6,1, [Define to 1 if you have struct sockaddr_in6.]) ac_have_sockaddr_in6=yes ) AC_CHECK_MEMBER(struct sockaddr_in6.sin6_scope_id, AC_DEFINE_UNQUOTED(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID,1, [Define to 1 if your struct sockaddr_in6 has sin6_scope_id.]) , , [ #undef inline #ifdef HAVE_WINDOWS_H #ifndef WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN #endif #include #ifdef HAVE_WINSOCK2_H #include #ifdef HAVE_WS2TCPIP_H #include #endif #endif #else #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif #endif ]) dnl check for the addrinfo structure AC_CHECK_MEMBER(struct addrinfo.ai_flags, AC_DEFINE_UNQUOTED(HAVE_STRUCT_ADDRINFO,1, [Define to 1 if you have struct addrinfo.]),, [ #undef inline #ifdef HAVE_WINDOWS_H #ifndef WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN #endif #include #ifdef HAVE_WINSOCK2_H #include #ifdef HAVE_WS2TCPIP_H #include #endif #endif #else #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_NETDB_H #include #endif #endif ] ) AC_CHECK_FUNCS( bitncmp \ gettimeofday \ if_indextoname, dnl if found [], dnl if not found, $ac_func is the name we check for func="$ac_func" AC_MSG_CHECKING([deeper for $func]) AC_TRY_LINK( [], [ $func ();], AC_MSG_RESULT(yes!) eval "ac_cv_func_$func=yes" def=`echo "HAVE_$func" | tr 'a-z' 'A-Z'` AC_DEFINE_UNQUOTED($def, 1, [If you have $func]), AC_MSG_RESULT(but still no) ) ) dnl check for inet_pton AC_CHECK_FUNCS(inet_pton) dnl Some systems have it, but not IPv6 if test "$ac_cv_func_inet_pton" = "yes" ; then AC_MSG_CHECKING(if inet_pton supports IPv6) AC_TRY_RUN( [ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif int main() { struct in6_addr addr6; if (inet_pton(AF_INET6, "::1", &addr6) < 1) exit(1); else exit(0); } ], [ AC_MSG_RESULT(yes) AC_DEFINE_UNQUOTED(HAVE_INET_PTON_IPV6,1,[Define to 1 if inet_pton supports IPv6.]) ], AC_MSG_RESULT(no),AC_MSG_RESULT(no)) fi dnl Check for inet_net_pton AC_CHECK_FUNCS(inet_net_pton) dnl Again, some systems have it, but not IPv6 if test "$ac_cv_func_inet_net_pton" = "yes" ; then AC_MSG_CHECKING(if inet_net_pton supports IPv6) AC_TRY_RUN( [ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif int main() { struct in6_addr addr6; if (inet_net_pton(AF_INET6, "::1", &addr6, sizeof(addr6)) < 1) exit(1); else exit(0); } ], [ AC_MSG_RESULT(yes) AC_DEFINE_UNQUOTED(HAVE_INET_NET_PTON_IPV6,1,[Define to 1 if inet_net_pton supports IPv6.]) ], AC_MSG_RESULT(no),AC_MSG_RESULT(no)) fi dnl Check for inet_ntop AC_CHECK_FUNCS(inet_ntop) dnl Again, some systems have it, but not IPv6 if test "$ac_cv_func_inet_ntop" = "yes" ; then AC_MSG_CHECKING(if inet_ntop supports IPv6) AC_TRY_RUN( [ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif #include int main() { struct in6_addr addr6; char buf[128]; if (inet_ntop(AF_INET6, &addr6, buf, 128) == 0 && errno == EAFNOSUPPORT) exit(1); else exit(0); } ], [ AC_MSG_RESULT(yes) AC_DEFINE_UNQUOTED(HAVE_INET_NTOP_IPV6,1, [Define to 1 if inet_ntop supports IPv6.]) ], AC_MSG_RESULT(no),AC_MSG_RESULT(no)) fi AC_CHECK_SIZEOF(struct in6_addr, , [ #undef inline #ifdef HAVE_WINDOWS_H #ifndef WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN #endif #include #ifdef HAVE_WINSOCK2_H #include #ifdef HAVE_WS2TCPIP_H #include #endif #endif #else #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif #endif ] ) AC_CHECK_SIZEOF(struct in_addr, , [ #undef inline #ifdef HAVE_WINDOWS_H #ifndef WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN #endif #include #ifdef HAVE_WINSOCK2_H #include #ifdef HAVE_WS2TCPIP_H #include #endif #endif #else #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef HAVE_NETINET_IN_H #include #endif #endif ] ) dnl Check if the getnameinfo function is available dnl and get the types of five of its arguments. CURL_CHECK_FUNC_GETNAMEINFO dnl God bless non-standardized functions! We need to see which getservbyport_r dnl variant is available CARES_CHECK_GETSERVBYPORT_R CURL_CHECK_NONBLOCKING_SOCKET AC_C_BIGENDIAN( [AC_DEFINE(ARES_BIG_ENDIAN, 1, [define this if ares is built for a big endian system])], , [AC_MSG_WARN([couldn't figure out endianess, assuming little endian!])] ) dnl Check for user-specified random device AC_ARG_WITH(random, AC_HELP_STRING([--with-random=FILE], [read randomness from FILE (default=/dev/urandom)]), [ RANDOM_FILE="$withval" ], [ dnl Check for random device AC_CHECK_FILE("/dev/urandom", [ RANDOM_FILE="/dev/urandom"] ) ] ) if test -n "$RANDOM_FILE" && test X"$RANDOM_FILE" != Xno ; then AC_SUBST(RANDOM_FILE) AC_DEFINE_UNQUOTED(RANDOM_FILE, "$RANDOM_FILE", [a suitable file/device to read random data from]) fi AC_OUTPUT(Makefile libcares.pc)