############################################################# # # Copyright (C) the Massachusetts Institute of Technology. # Copyright (C) Daniel Stenberg # # Permission to use, copy, modify, and distribute this # software and its documentation for any purpose and without # fee is hereby granted, provided that the above copyright # notice appear in all copies and that both that copyright # notice and this permission notice appear in supporting # documentation, and that the name of M.I.T. not be used in # advertising or publicity pertaining to distribution of the # software without specific, written prior permission. # M.I.T. makes no representations about the suitability of # this software for any purpose. It is provided "as is" # without express or implied warranty. # # SPDX-License-Identifier: MIT # ############################################################# AC_PREREQ([2.60]) AC_INIT([c-ares], [1.22.1], [c-ares mailing list: http://lists.haxx.se/listinfo/c-ares]) CARES_VERSION_INFO="10:1:8" dnl This flag accepts an argument of the form current[:revision[:age]]. So, dnl passing -version-info 3:12:1 sets current to 3, revision to 12, and age to dnl 1. dnl dnl If either revision or age are omitted, they default to 0. Also note that age dnl must be less than or equal to the current interface number. dnl dnl Here are a set of rules to help you update your library version information: dnl dnl 1.Start with version information of 0:0:0 for each libtool library. dnl dnl 2.Update the version information only immediately before a public release of dnl your software. More frequent updates are unnecessary, and only guarantee dnl that the current interface number gets larger faster. dnl dnl 3.If the library source code has changed at all since the last update, then dnl increment revision (c:r+1:a) dnl dnl 4.If any interfaces have been added, removed, or changed since the last dnl update, increment current, and set revision to 0. (c+1:r=0:a) dnl dnl 5.If any interfaces have been added since the last public release, then dnl increment age. (c:r:a+1) dnl dnl 6.If any interfaces have been removed since the last public release, then dnl set age to 0. (c:r:a=0) dnl AC_SUBST([CARES_VERSION_INFO]) AC_CONFIG_SRCDIR([src/lib/ares_ipv6.h]) AC_CONFIG_HEADERS([src/lib/ares_config.h include/ares_build.h]) AC_CONFIG_MACRO_DIR([m4]) AM_MAINTAINER_MODE m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])]) AX_REQUIRE_DEFINED([AX_CXX_COMPILE_STDCXX_11]) CARES_CHECK_OPTION_DEBUG CARES_CHECK_OPTION_OPTIMIZE CARES_CHECK_OPTION_WARNINGS CARES_CHECK_OPTION_WERROR 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. if test -z "$AR"; then dnl allow it to be overridden AC_PATH_TOOL([AR], [ar], [not_found], [$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 fi AC_SUBST([AR]) AX_CODE_COVERAGE 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 "$want_warnings" = "yes"; then AX_APPEND_COMPILE_FLAGS([-Wall \ -Wextra \ -Wcast-align \ -Wconversion \ -Wdeclaration-after-statement \ -Wdouble-promotion \ -Wfloat-equal \ -Wformat-security \ -Winit-self \ -Wjump-misses-init \ -Wlogical-op \ -Wmissing-braces \ -Wmissing-declarations \ -Wmissing-format-attribute \ -Wmissing-include-dirs \ -Wmissing-prototypes \ -Wnested-externs \ -Wno-coverage-mismatch \ -Wold-style-definition \ -Wpacked \ -Wpointer-arith \ -Wredundant-decls \ -Wshadow \ -Wsign-conversion \ -Wstrict-overflow \ -Wstrict-prototypes \ -Wtrampolines \ -Wundef \ -Wunused \ -Wvariadic-macros \ -Wvla \ -Wwrite-strings \ -Werror=implicit-int \ -Werror=implicit-function-declaration \ -Werror=partial-availability \ ], [CFLAGS], [-Werror]) fi if test "$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 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-"$ac_cv_native_windows" in X-yes) CURL_CHECK_HEADER_WINSOCK CURL_CHECK_HEADER_WINSOCK2 CURL_CHECK_HEADER_WS2TCPIP CPPFLAGS="$CPPFLAGS -D_WIN32_WINNT=0x0602" ;; *) 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 "$HAVE_GETHOSTBYNAME" != "1"; then AC_MSG_ERROR([couldn't find libraries for gethostbyname()]) fi dnl resolv lib for Apple (MacOS and iOS) AS_IF([test "x$host_vendor" = "xapple"], [ 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]) ]) ]) dnl resolv lib for z/OS AS_IF([test "x$host_vendor" = "xibm" -a "x$host_os" = "xopenedition" ], [ AC_SEARCH_LIBS([res_init], [resolv], [ AC_DEFINE([CARES_USE_LIBRESOLV], [1], [Use resolver library to configure cares]) ], [ AC_MSG_ERROR([Unable to find libresolv which is required for z/OS]) ]) ]) 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 $LIBS"], , -lnsl) fi ac_cv_func_strcasecmp="no" dnl Windows builds require linking to iphlpapi if test "$ac_cv_header_winsock2_h" = "yes"; then LIBS="$LIBS -liphlpapi" fi CARES_CHECK_LIBS_CONNECT dnl iOS 10? AS_IF([test "x$host_vendor" = "xapple"], [ AC_MSG_CHECKING([for iOS minimum version 10 or later]) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[ #include #include #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$host_vendor" = "xapple"], [ AC_MSG_CHECKING([for macOS minimum version 10.12 or later]) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[ #include #include #include ]], [[ #ifndef MAC_OS_X_VERSION_10_12 # define MAC_OS_X_VERSION_10_12 101200 #endif #if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12 #error Not macOS 10.12 or later #endif return 0; ]]) ],[ AC_MSG_RESULT([yes]) ac_cv_macos_10_12="yes" ],[ AC_MSG_RESULT([no]) ]) ]) dnl ********************************************************************** dnl In case that function clock_gettime with monotonic timer is available, dnl check for additional required libraries. dnl ********************************************************************** dnl Xcode 8 bug: iOS when targeting less than 10, or macOS when targeting less than 10.12 will dnl say clock_gettime exists, it is a weak symbol that only exists in iOS 10 or macOS 10.12 and will dnl cause a crash at runtime when running on older versions. Skip finding CLOCK_MONOTONIC on older dnl Apple OS's. if test "x$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, AS_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 AC_PROG_EGREP 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 \ iphlpapi.h \ netioapi.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 Test and set CARES_HAVE_ARPA_NAMESER_H / CARES_HAVE_ARPA_NAMESER_COMPAT_H AC_CHECK_DECL([HAVE_ARPA_NAMESER_H], [ CARES_DEFINE_UNQUOTED([CARES_HAVE_ARPA_NAMESER_H]) ], [] ) AC_CHECK_DECL([HAVE_ARPA_NAMESER_COMPAT_H], [ CARES_DEFINE_UNQUOTED([CARES_HAVE_ARPA_NAMESER_COMPAT_H]) ], [] ) dnl Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_TYPE_SIZE_T m4_warn([obsolete], [Update your code to rely only on HAVE_SYS_TIME_H, then remove this warning and the obsolete code below it. All current systems provide time.h; it need not be checked for. Not all systems provide sys/time.h, but those that do, all allow you to include it and time.h simultaneously.])dnl AC_CHECK_HEADERS_ONCE([sys/time.h]) # Obsolete code to be removed. if test $ac_cv_header_sys_time_h = yes; then AC_DEFINE([TIME_WITH_SYS_TIME],[1],[Define to 1 if you can safely include both and . This macro is obsolete.]) fi # End of obsolete code. CURL_CHECK_STRUCT_TIMEVAL AC_CHECK_TYPE(long long, [AC_DEFINE(HAVE_LONGLONG, 1, [Define to 1 if the compiler supports the 'long long' data type.])] longlong="yes" ) if test "xyes" = "x$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, [ CARES_TYPEOF_ARES_SSIZE_T=ssize_t ], [ CARES_TYPEOF_ARES_SSIZE_T=int ]) AC_DEFINE_UNQUOTED([CARES_TYPEOF_ARES_SSIZE_T], ${CARES_TYPEOF_ARES_SSIZE_T}, [the signed version of size_t]) # check for bool type AC_CHECK_TYPE([bool],[ AC_DEFINE(HAVE_BOOL_T, 1, [Define to 1 if bool is an available type.]) ], ,[ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_STDBOOL_H #include #endif ]) CARES_CONFIGURE_ARES_SOCKLEN_T TYPE_IN_ADDR_T TYPE_SOCKADDR_STORAGE TYPE_SIG_ATOMIC_T m4_warn([obsolete], [your code may safely assume C89 semantics that RETSIGTYPE is void. Remove this warning and the `AC_CACHE_CHECK' when you adjust the code.])dnl AC_CACHE_CHECK([return type of signal handlers],[ac_cv_type_signal],[AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([#include #include ], [return *(signal (0, 0)) (0) == 1;])], [ac_cv_type_signal=int], [ac_cv_type_signal=void])]) AC_DEFINE_UNQUOTED([RETSIGTYPE],[$ac_cv_type_signal],[Define as the return type of signal handlers (`int' or `void').]) 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_GETRANDOM 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 CARES_CHECK_FUNC_ARC4RANDOM_BUF CARES_CHECK_FUNC_STAT 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 $func function.]) ],[ AC_MSG_RESULT([but still no]) ]) ]) dnl Android. Some variants like arm64 may no longer have __system_property_get dnl in libc, but they are defined in the headers. Perform a link check. AC_CHECK_FUNC([__system_property_get], [ AC_DEFINE([HAVE___SYSTEM_PROPERTY_GET], [1], [Define if __system_property_get exists.]) ]) dnl Check if the getnameinfo function is available dnl and get the types of five of its arguments. CURL_CHECK_FUNC_GETNAMEINFO AC_C_BIGENDIAN( [AC_DEFINE(ARES_BIG_ENDIAN, 1, [define this if ares is built for a big endian system])], , [AC_MSG_WARN([couldn't figure out endianness, assuming little endian!])] ) dnl Check for user-specified random device AC_ARG_WITH(random, AS_HELP_STRING([--with-random=FILE], [read randomness from FILE (default=/dev/urandom)]), [ CARES_RANDOM_FILE="$withval" ], [ CARES_RANDOM_FILE="/dev/urandom" ] ) if test -n "$CARES_RANDOM_FILE" && test X"$CARES_RANDOM_FILE" != Xno ; then AC_SUBST(CARES_RANDOM_FILE) AC_DEFINE_UNQUOTED(CARES_RANDOM_FILE, "$CARES_RANDOM_FILE", [a suitable file/device to read random data from]) fi CARES_CHECK_OPTION_NONBLOCKING CARES_CHECK_NONBLOCKING_SOCKET dnl ------------ THREADING -------------- AC_ARG_ENABLE(cares-threads, AC_HELP_STRING([--disable-cares-threads], [Disable building of thread safety support]), [ CARES_THREADS=${enableval} ], [ CARES_THREADS=yes ]) dnl windows always supports threads, only check non-windows systems. if test "${CARES_THREADS}" = "yes" -a "x${ac_cv_native_windows}" != "xyes" ; then AX_PTHREAD([ ], [ AC_MSG_WARN([threads requested but not supported]) CARES_THREADS=no ]) if test "${CARES_THREADS}" = "yes" ; then AC_CHECK_HEADERS([pthread.h pthread_np.h]) LIBS="$PTHREAD_LIBS $LIBS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" CC="$PTHREAD_CC" CXX="$PTHREAD_CXX" fi fi if test "${CARES_THREADS}" = "yes" ; then AC_DEFINE([CARES_THREADS], [ 1 ], [Threading enabled]) fi 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, AS_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([$build_tests]) BUILD_SUBDIRS="include src docs" if test "x$build_tests" = "xyes" ; then AC_CONFIG_SUBDIRS([test]) BUILD_SUBDIRS="${BUILD_SUBDIRS} test" fi AC_SUBST(BUILD_SUBDIRS) AC_CONFIG_FILES([Makefile \ include/Makefile \ src/Makefile \ src/lib/Makefile \ src/tools/Makefile \ docs/Makefile \ libcares.pc ]) AC_OUTPUT XC_AMEND_DISTCLEAN(['.'])