AC_PREREQ(2.57) dnl Version not hardcoded here. Fetched later from ares_version.h AC_INIT([c-ares], [-], [c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares]) XC_OVR_ZZ50 XC_OVR_ZZ60 CARES_OVERRIDE_AUTOCONF AC_CONFIG_SRCDIR([ares_ipv6.h]) AC_CONFIG_HEADERS([ares_config.h ares_build.h]) AC_CONFIG_MACRO_DIR([m4]) AM_MAINTAINER_MODE m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])]) CARES_CHECK_OPTION_DEBUG CARES_CHECK_OPTION_OPTIMIZE CARES_CHECK_OPTION_WARNINGS CARES_CHECK_OPTION_WERROR CARES_CHECK_OPTION_CURLDEBUG CARES_CHECK_OPTION_SYMBOL_HIDING CARES_CHECK_OPTION_EXPOSE_STATICS XC_CHECK_PATH_SEPARATOR dnl SED is mandatory for configure process and libtool. dnl Set it now, allowing it to be changed later. AC_PATH_PROG([SED], [sed], [not_found], [$PATH:/usr/bin:/usr/local/bin]) if test -z "$SED" || test "$SED" = "not_found"; then AC_MSG_ERROR([sed not found in PATH. Cannot continue without sed.]) fi AC_SUBST([SED]) dnl GREP is mandatory for configure process and libtool. dnl Set it now, allowing it to be changed later. AC_PATH_PROG([GREP], [grep], [not_found], [$PATH:/usr/bin:/usr/local/bin]) if test -z "$GREP" || test "$GREP" = "not_found"; then AC_MSG_ERROR([grep not found in PATH. Cannot continue without grep.]) fi AC_SUBST([GREP]) dnl EGREP is mandatory for configure process and libtool. dnl Set it now, allowing it to be changed later. if echo a | ($GREP -E '(a|b)') >/dev/null 2>&1; then AC_MSG_CHECKING([for egrep]) EGREP="$GREP -E" AC_MSG_RESULT([$EGREP]) else AC_PATH_PROG([EGREP], [egrep], [not_found], [$PATH:/usr/bin:/usr/local/bin]) fi if test -z "$EGREP" || test "$EGREP" = "not_found"; then AC_MSG_ERROR([egrep not found in PATH. Cannot continue without egrep.]) fi AC_SUBST([EGREP]) dnl AR is mandatory for configure process and libtool. dnl This is target dependent, so check it as a tool. AC_PATH_TOOL([AR], [ar], [not_found], [$PATH:/usr/bin:/usr/local/bin]) if test -z "$AR" || test "$AR" = "not_found"; then AC_MSG_ERROR([ar not found in PATH. Cannot continue without ar.]) fi AC_SUBST([AR]) AX_CODE_COVERAGE dnl Remove non-configure distributed ares_build.h if test -f ${srcdir}/ares_build.h; then rm -f ${srcdir}/ares_build.h fi dnl dnl Detect the canonical host and target build environment dnl AC_CANONICAL_HOST dnl Get system canonical name AC_DEFINE_UNQUOTED(OS, "${host}", [cpu-machine-OS]) XC_CHECK_PROG_CC AX_CXX_COMPILE_STDCXX_11([noext],[optional]) XC_AUTOMAKE dnl This defines _ALL_SOURCE for AIX CARES_CHECK_AIX_ALL_SOURCE dnl Our configure and build reentrant settings CARES_CONFIGURE_THREAD_SAFE CARES_CONFIGURE_REENTRANT dnl check for how to do large files AC_SYS_LARGEFILE case $host_os in solaris*) AC_DEFINE(ETC_INET, 1, [if a /etc/inet dir is being used]) ;; esac XC_LIBTOOL # # Automake conditionals based on libtool related checks # AM_CONDITIONAL([CARES_LT_SHLIB_USE_VERSION_INFO], [test "x$xc_lt_shlib_use_version_info" = 'xyes']) AM_CONDITIONAL([CARES_LT_SHLIB_USE_NO_UNDEFINED], [test "x$xc_lt_shlib_use_no_undefined" = 'xyes']) AM_CONDITIONAL([CARES_LT_SHLIB_USE_MIMPURE_TEXT], [test "x$xc_lt_shlib_use_mimpure_text" = 'xyes']) # # Due to libtool and automake machinery limitations of not allowing # specifying separate CPPFLAGS or CFLAGS when compiling objects for # inclusion of these in shared or static libraries, we are forced to # build using separate configure runs for shared and static libraries # on systems where different CPPFLAGS or CFLAGS are mandatory in order # to compile objects for each kind of library. Notice that relying on # the '-DPIC' CFLAG that libtool provides is not valid given that the # user might for example choose to build static libraries with PIC. # # # Make our Makefile.am files use the staticlib CPPFLAG only when strictly # targeting a static library and not building its shared counterpart. # AM_CONDITIONAL([USE_CPPFLAG_CARES_STATICLIB], [test "x$xc_lt_build_static_only" = 'xyes']) # # Make staticlib CPPFLAG variable and its definition visible in output # files unconditionally, providing an empty definition unless strictly # targeting a static library and not building its shared counterpart. # CPPFLAG_CARES_STATICLIB= if test "x$xc_lt_build_static_only" = 'xyes'; then CPPFLAG_CARES_STATICLIB='-DCARES_STATICLIB' fi AC_SUBST([CPPFLAG_CARES_STATICLIB]) dnl ********************************************************************** dnl platform/compiler/architecture specific checks/flags dnl ********************************************************************** CARES_CHECK_COMPILER CARES_SET_COMPILER_BASIC_OPTS CARES_SET_COMPILER_DEBUG_OPTS CARES_SET_COMPILER_OPTIMIZE_OPTS CARES_SET_COMPILER_WARNING_OPTS if test "$compiler_id" = "INTEL_UNIX_C"; then # if test "$compiler_num" -ge "1000"; then dnl icc 10.X or later CFLAGS="$CFLAGS -shared-intel" elif test "$compiler_num" -ge "900"; then dnl icc 9.X specific CFLAGS="$CFLAGS -i-dynamic" fi # fi CARES_CHECK_COMPILER_HALT_ON_ERROR CARES_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE CARES_CHECK_COMPILER_PROTOTYPE_MISMATCH CARES_CHECK_COMPILER_SYMBOL_HIDING CARES_CHECK_CURLDEBUG AM_CONDITIONAL(CURLDEBUG, test x$want_curldebug = xyes) dnl ********************************************************************** dnl Compilation based checks should not be done before this point. dnl ********************************************************************** 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_NATIVE_WINDOWS case X-"$ac_cv_native_windows" in X-yes) CURL_CHECK_HEADER_WINSOCK CURL_CHECK_HEADER_WINSOCK2 CURL_CHECK_HEADER_WS2TCPIP ;; *) ac_cv_header_winsock_h="no" ac_cv_header_winsock2_h="no" ac_cv_header_ws2tcpip_h="no" ;; esac dnl ********************************************************************** dnl Checks for libraries. dnl ********************************************************************** CARES_CHECK_LIB_XNET dnl gethostbyname without lib or in the nsl lib? AC_CHECK_FUNC(gethostbyname, [HAVE_GETHOSTBYNAME="1" ], [ AC_CHECK_LIB(nsl, gethostbyname, [HAVE_GETHOSTBYNAME="1" LIBS="$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 $LIBS" AC_LINK_IFELSE([ AC_LANG_PROGRAM([[ ]],[[ gethostbyname(); ]]) ],[ AC_MSG_RESULT([yes]) HAVE_GETHOSTBYNAME="1" ],[ AC_MSG_RESULT([no]) LIBS=$my_ac_save_LIBS ]) fi if test "$HAVE_GETHOSTBYNAME" != "1" then dnl This is for winsock systems if test "$ac_cv_header_windows_h" = "yes"; then if test "$ac_cv_header_winsock_h" = "yes"; then case $host in *-*-mingw32ce*) winsock_LIB="-lwinsock" ;; *) winsock_LIB="-lwsock32" ;; esac fi if test "$ac_cv_header_winsock2_h" = "yes"; then winsock_LIB="-lws2_32" fi if test ! -z "$winsock_LIB"; then my_ac_save_LIBS=$LIBS LIBS="$winsock_LIB $LIBS" AC_MSG_CHECKING([for gethostbyname in $winsock_LIB]) AC_LINK_IFELSE([ AC_LANG_PROGRAM([[ #ifdef HAVE_WINDOWS_H #ifndef WIN32_LEAN_AND_MEAN #define WIN32_LEAN_AND_MEAN #endif #include #ifdef HAVE_WINSOCK2_H #include #else #ifdef HAVE_WINSOCK_H #include #endif #endif #endif ]],[[ gethostbyname("www.dummysite.com"); ]]) ],[ AC_MSG_RESULT([yes]) HAVE_GETHOSTBYNAME="1" ],[ AC_MSG_RESULT([no]) winsock_LIB="" LIBS=$my_ac_save_LIBS ]) fi fi fi if test "$HAVE_GETHOSTBYNAME" != "1" then dnl This is for Minix 3.1 AC_MSG_CHECKING([for gethostbyname for Minix 3]) AC_LINK_IFELSE([ AC_LANG_PROGRAM([[ /* Older Minix versions may need here instead */ #include ]],[[ gethostbyname("www.dummysite.com"); ]]) ],[ AC_MSG_RESULT([yes]) HAVE_GETHOSTBYNAME="1" ],[ AC_MSG_RESULT([no]) ]) fi if test "$HAVE_GETHOSTBYNAME" != "1" then dnl This is for eCos with a stubbed DNS implementation AC_MSG_CHECKING([for gethostbyname for eCos]) AC_LINK_IFELSE([ AC_LANG_PROGRAM([[ #include #include ]],[[ gethostbyname("www.dummysite.com"); ]]) ],[ 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 "$HAVE_GETHOSTBYNAME" != "1"; then AC_MSG_ERROR([couldn't find libraries for gethostbyname()]) fi dnl resolv lib for iPhone AS_IF([test "x$host_vendor" = "xapple"], [ AC_MSG_CHECKING([for iPhone target]) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[ #include "TargetConditionals.h" ]], [[ #if TARGET_OS_IPHONE == 0 #error Not an iPhone target #endif return 0; ]]) ],[ AC_MSG_RESULT([yes]) AC_SEARCH_LIBS([res_servicename], [resolv], [ AC_DEFINE([CARES_USE_LIBRESOLV], [1], [Use resolver library to configure cares]) ], [ AC_MSG_ERROR([Unable to find libresolv which is required for iPhone targets]) ]) ],[ AC_MSG_RESULT([no]) ]) ]) 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 $LIBS"], , -lnsl) fi ac_cv_func_strcasecmp="no" CARES_CHECK_LIBS_CONNECT dnl iOS 10? AS_IF([test "x$host_vendor" = "xapple"], [ AC_MSG_CHECKING([for iOS minimum version 10 or later]) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[ #include #include ]], [[ #if TARGET_OS_IPHONE == 0 || __IPHONE_OS_VERSION_MIN_REQUIRED < 100000 #error Not iOS 10 or later #endif return 0; ]]) ],[ AC_MSG_RESULT([yes]) ac_cv_ios_10="yes" ],[ AC_MSG_RESULT([no]) ]) ]) dnl macOS 10.12? AS_IF([test "x$host_vendor" = "xapple"], [ AC_MSG_CHECKING([for macOS minimum version 10.12 or later]) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[ #include #include ]], [[ #ifndef MAC_OS_X_VERSION_10_12 # define MAC_OS_X_VERSION_10_12 101200 #endif #if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12 #error Not macOS 10.12 or later #endif return 0; ]]) ],[ AC_MSG_RESULT([yes]) ac_cv_macos_10_12="yes" ],[ AC_MSG_RESULT([no]) ]) ]) dnl ********************************************************************** dnl In case that function clock_gettime with monotonic timer is available, dnl check for additional required libraries. dnl ********************************************************************** dnl Xcode 8 bug: iOS when targeting less than 10, or macOS when targeting less than 10.12 will dnl say clock_gettime exists, it is a weak symbol that only exists in iOS 10 or macOS 10.12 and will dnl cause a crash at runtime when running on older versions. Skip finding CLOCK_MONOTONIC on older dnl Apple OS's. if test "x$host_vendor" != "xapple" || test "x$ac_cv_ios_10" = "xyes" || test "x$ac_cv_macos_10_12" = "xyes"; then CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC fi 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 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 dnl ********************************************************************** dnl Back to "normal" configuring dnl ********************************************************************** dnl Checks for header files. AC_HEADER_STDC CURL_CHECK_HEADER_MALLOC CURL_CHECK_HEADER_MEMORY 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 \ sys/uio.h \ assert.h \ netdb.h \ netinet/in.h \ netinet/tcp.h \ net/if.h \ errno.h \ socket.h \ strings.h \ stdbool.h \ time.h \ limits.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_TYPE(long long, [AC_DEFINE(HAVE_LONGLONG, 1, [Define to 1 if the compiler supports the 'long long' data type.])] longlong="yes" ) if test "xyes" = "x$longlong"; then AC_MSG_CHECKING([if numberLL works]) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[ ]],[[ long long val = 1000LL; ]]) ],[ AC_MSG_RESULT([yes]) AC_DEFINE(HAVE_LL, 1, [if your compiler supports LL]) ],[ 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 ]) CARES_CONFIGURE_ARES_SOCKLEN_T TYPE_IN_ADDR_T TYPE_SOCKADDR_STORAGE TYPE_SIG_ATOMIC_T AC_TYPE_SIGNAL CURL_CHECK_FUNC_RECV CURL_CHECK_FUNC_RECVFROM CURL_CHECK_FUNC_SEND CURL_CHECK_MSG_NOSIGNAL CARES_CHECK_FUNC_CLOSESOCKET CARES_CHECK_FUNC_CLOSESOCKET_CAMEL CARES_CHECK_FUNC_CONNECT CARES_CHECK_FUNC_FCNTL CARES_CHECK_FUNC_FREEADDRINFO CARES_CHECK_FUNC_GETADDRINFO CARES_CHECK_FUNC_GETENV CARES_CHECK_FUNC_GETHOSTBYADDR CARES_CHECK_FUNC_GETHOSTBYNAME CARES_CHECK_FUNC_GETHOSTNAME CARES_CHECK_FUNC_GETSERVBYPORT_R CARES_CHECK_FUNC_INET_NET_PTON CARES_CHECK_FUNC_INET_NTOP CARES_CHECK_FUNC_INET_PTON CARES_CHECK_FUNC_IOCTL CARES_CHECK_FUNC_IOCTLSOCKET CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL CARES_CHECK_FUNC_SETSOCKOPT CARES_CHECK_FUNC_SOCKET CARES_CHECK_FUNC_STRCASECMP CARES_CHECK_FUNC_STRCMPI CARES_CHECK_FUNC_STRDUP CARES_CHECK_FUNC_STRICMP CARES_CHECK_FUNC_STRNCASECMP CARES_CHECK_FUNC_STRNCMPI CARES_CHECK_FUNC_STRNICMP CARES_CHECK_FUNC_WRITEV 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 ],[ ],[ func="$ac_func" AC_MSG_CHECKING([deeper for $func]) AC_LINK_IFELSE([ AC_LANG_PROGRAM([[ ]],[[ $func (); ]]) ],[ AC_MSG_RESULT([yes]) eval "ac_cv_func_$func=yes" AC_DEFINE_UNQUOTED(XC_SH_TR_CPP([HAVE_$func]), [1], [Define to 1 if you have the $func function.]) ],[ AC_MSG_RESULT([but still no]) ]) ]) dnl Check if the getnameinfo function is available dnl and get the types of five of its arguments. CURL_CHECK_FUNC_GETNAMEINFO AC_C_BIGENDIAN( [AC_DEFINE(ARES_BIG_ENDIAN, 1, [define this if ares is built for a big endian system])], , [AC_MSG_WARN([couldn't figure out endianess, assuming little endian!])] ) dnl Check for user-specified random device AC_ARG_WITH(random, AC_HELP_STRING([--with-random=FILE], [read randomness from FILE (default=/dev/urandom)]), [ RANDOM_FILE="$withval" ], [ dnl Check for random device. If we're cross compiling, we can't dnl check, and it's better to assume it doesn't exist than it is dnl to fail on AC_CHECK_FILE or later. if test "$cross_compiling" = "no"; then AC_CHECK_FILE("/dev/urandom", [ RANDOM_FILE="/dev/urandom"] ) else AC_MSG_WARN([cannot check for /dev/urandom while cross compiling; assuming none]) fi ] ) if test -n "$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 CARES_CHECK_OPTION_NONBLOCKING CARES_CHECK_NONBLOCKING_SOCKET CARES_CONFIGURE_SYMBOL_HIDING CARES_PRIVATE_LIBS="$LIBS" AC_SUBST(CARES_PRIVATE_LIBS) CARES_CFLAG_EXTRAS="" if test X"$want_werror" = Xyes; then CARES_CFLAG_EXTRAS="-Werror" fi AC_SUBST(CARES_CFLAG_EXTRAS) dnl squeeze whitespace out of some variables squeeze CFLAGS squeeze CPPFLAGS squeeze DEFS squeeze LDFLAGS squeeze LIBS squeeze CARES_PRIVATE_LIBS XC_CHECK_BUILD_FLAGS AC_MSG_CHECKING([whether to build tests]) AC_ARG_ENABLE(tests, AC_HELP_STRING([--enable-tests], [build test suite]), [ build_tests="$enableval" ], [ if test "x$HAVE_CXX11" = "x1" && test "x$cross_compiling" = "xno" ; then build_tests="yes" else build_tests="no" fi ] ) if test "x$build_tests" = "xyes" ; then if test "x$HAVE_CXX11" = "0" ; then AC_MSG_ERROR([*** Building tests requires a CXX11 compiler]) fi if test "x$cross_compiling" = "xyes" ; then AC_MSG_ERROR([*** Tests not supported when cross compiling]) fi fi AC_MSG_RESULT([$build_tests]) if test "x$build_tests" = "xyes" ; then AC_CONFIG_SUBDIRS([test]) fi AC_CONFIG_FILES([Makefile libcares.pc]) AC_OUTPUT XC_AMEND_DISTCLEAN(['.'])