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dnl Copyright (C) 2004-2023 Free Software Foundation, Inc. |
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dnl This file is free software; the Free Software Foundation |
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dnl gives unlimited permission to copy and/or distribute it, |
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dnl with or without modifications, as long as this notice is preserved. |
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AC_DEFUN([gl_GETADDRINFO], |
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[ |
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AC_REQUIRE([gl_SYS_SOCKET_H])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H |
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AC_REQUIRE([gl_NETDB_H])dnl for HAVE_NETDB_H |
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GETADDRINFO_LIB= |
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gai_saved_LIBS="$LIBS" |
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dnl Where is getaddrinfo()? |
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dnl - On Solaris, it is in libsocket. |
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dnl - On Haiku, it is in libnetwork. |
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dnl - On BeOS, it is in libnet. |
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dnl - On native Windows, it is in ws2_32.dll. |
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dnl - Otherwise it is in libc. |
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AC_SEARCH_LIBS([getaddrinfo], [socket network net], |
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[if test "$ac_cv_search_getaddrinfo" != "none required"; then |
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GETADDRINFO_LIB="$ac_cv_search_getaddrinfo" |
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fi]) |
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LIBS="$gai_saved_LIBS $GETADDRINFO_LIB" |
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HAVE_GETADDRINFO=1 |
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AC_CACHE_CHECK([for getaddrinfo], [gl_cv_func_getaddrinfo], [ |
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[ |
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]], [[getaddrinfo("", "", NULL, NULL);]])], |
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[gl_cv_func_getaddrinfo=yes], |
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[gl_cv_func_getaddrinfo=no])]) |
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if test $gl_cv_func_getaddrinfo = no; then |
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AC_CACHE_CHECK([for getaddrinfo in ws2tcpip.h and -lws2_32], |
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gl_cv_w32_getaddrinfo, [ |
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gl_cv_w32_getaddrinfo=no |
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am_save_LIBS="$LIBS" |
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LIBS="$LIBS -lws2_32" |
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[ |
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]], [[getaddrinfo(NULL, NULL, NULL, NULL);]])], [gl_cv_w32_getaddrinfo=yes]) |
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LIBS="$am_save_LIBS" |
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]) |
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if test "$gl_cv_w32_getaddrinfo" = "yes"; then |
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GETADDRINFO_LIB="-lws2_32" |
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LIBS="$gai_saved_LIBS $GETADDRINFO_LIB" |
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dnl Check for correct signature, in particular for a cdecl-compatible |
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dnl calling convention. |
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AC_CACHE_CHECK([for getaddrinfo with POSIX signature], |
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[gl_cv_func_getaddrinfo_posix_signature], |
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[AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ |
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extern |
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"C" |
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int getaddrinfo (const char *, const char *, const struct addrinfo *, struct addrinfo **); |
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]])], |
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[gl_cv_func_getaddrinfo_posix_signature=yes], |
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[gl_cv_func_getaddrinfo_posix_signature=no]) |
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]) |
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if test $gl_cv_func_getaddrinfo_posix_signature = no; then |
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REPLACE_GETADDRINFO=1 |
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fi |
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else |
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HAVE_GETADDRINFO=0 |
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fi |
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fi |
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AC_DEFINE_UNQUOTED([HAVE_GETADDRINFO], [$HAVE_GETADDRINFO], |
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[Define to 1 if getaddrinfo exists, or to 0 otherwise.]) |
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# We can't use AC_REPLACE_FUNCS here because gai_strerror may be an |
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# inline function declared in ws2tcpip.h, so we need to get that |
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# header included somehow. |
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AC_CHECK_DECLS([gai_strerror], [], [], [[ |
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#include <sys/types.h> |
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#ifdef HAVE_SYS_SOCKET_H |
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#include <sys/socket.h> |
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#endif |
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#ifdef HAVE_NETDB_H |
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#include <netdb.h> |
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#endif |
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#ifdef HAVE_WS2TCPIP_H |
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#include <ws2tcpip.h> |
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#endif |
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#include <stddef.h> |
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]]) |
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if test $ac_cv_have_decl_gai_strerror = yes; then |
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AC_CHECK_DECLS([gai_strerrorA], [], [], [[ |
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#include <sys/types.h> |
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#ifdef HAVE_SYS_SOCKET_H |
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#include <sys/socket.h> |
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#endif |
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#ifdef HAVE_NETDB_H |
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#include <netdb.h> |
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#endif |
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#ifdef HAVE_WS2TCPIP_H |
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#include <ws2tcpip.h> |
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#endif |
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#include <stddef.h> |
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]]) |
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dnl check for correct signature |
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AC_CACHE_CHECK([for gai_strerror with POSIX signature], |
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[gl_cv_func_gai_strerror_posix_signature], [ |
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ |
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#include <sys/types.h> |
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#ifdef HAVE_SYS_SOCKET_H |
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#include <sys/socket.h> |
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#endif |
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#ifdef HAVE_NETDB_H |
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#include <netdb.h> |
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#endif |
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#ifdef HAVE_WS2TCPIP_H |
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#include <ws2tcpip.h> |
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#endif |
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#include <stddef.h> |
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extern |
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#ifdef __cplusplus |
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"C" |
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#endif |
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const char *gai_strerror(int);]])], |
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[gl_cv_func_gai_strerror_posix_signature=yes], |
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[gl_cv_func_gai_strerror_posix_signature=no])]) |
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if test $gl_cv_func_gai_strerror_posix_signature = no; then |
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REPLACE_GAI_STRERROR=1 |
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fi |
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fi |
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LIBS="$gai_saved_LIBS" |
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gl_PREREQ_GETADDRINFO |
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AC_SUBST([GETADDRINFO_LIB]) |
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]) |
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# Prerequisites of lib/netdb.in.h and lib/getaddrinfo.c. |
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AC_DEFUN([gl_PREREQ_GETADDRINFO], [ |
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AC_REQUIRE([gl_NETDB_H_DEFAULTS]) |
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AC_REQUIRE([gl_SYS_SOCKET_H])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H |
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AC_REQUIRE([gl_HOSTENT]) dnl for HOSTENT_LIB |
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AC_REQUIRE([gl_SERVENT]) dnl for SERVENT_LIB |
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AC_REQUIRE([gl_FUNC_INET_NTOP]) dnl for INET_NTOP_LIB |
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AC_REQUIRE([AC_C_RESTRICT]) |
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AC_REQUIRE([gl_SOCKET_FAMILIES]) |
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AC_REQUIRE([gl_SYS_SOCKET_H]) |
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AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) |
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dnl Including sys/socket.h is wrong for Windows, but Windows does not |
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dnl have sa_len so the result is correct anyway. |
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AC_CHECK_MEMBERS([struct sockaddr.sa_len], , , [ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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]) |
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AC_CHECK_HEADERS_ONCE([netinet/in.h]) |
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AC_CHECK_DECLS([getaddrinfo, freeaddrinfo, getnameinfo],,,[[ |
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/* sys/types.h is not needed according to POSIX, but the |
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sys/socket.h in i386-unknown-freebsd4.10 and |
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powerpc-apple-darwin5.5 required it. */ |
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#include <sys/types.h> |
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#ifdef HAVE_SYS_SOCKET_H |
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#include <sys/socket.h> |
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#endif |
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#ifdef HAVE_NETDB_H |
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#include <netdb.h> |
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#endif |
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#ifdef HAVE_WS2TCPIP_H |
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#include <ws2tcpip.h> |
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#endif |
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]]) |
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if test $ac_cv_have_decl_getaddrinfo = no; then |
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HAVE_DECL_GETADDRINFO=0 |
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fi |
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if test $ac_cv_have_decl_freeaddrinfo = no; then |
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HAVE_DECL_FREEADDRINFO=0 |
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fi |
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if test $ac_cv_have_decl_gai_strerror = no; then |
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HAVE_DECL_GAI_STRERROR=0 |
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fi |
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if test $ac_cv_have_decl_getnameinfo = no; then |
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HAVE_DECL_GETNAMEINFO=0 |
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fi |
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AC_CHECK_TYPES([struct addrinfo],,,[ |
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#include <sys/types.h> |
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#ifdef HAVE_SYS_SOCKET_H |
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#include <sys/socket.h> |
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#endif |
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#ifdef HAVE_NETDB_H |
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#include <netdb.h> |
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#endif |
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#ifdef HAVE_WS2TCPIP_H |
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#include <ws2tcpip.h> |
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#endif |
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]) |
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if test $ac_cv_type_struct_addrinfo = no; then |
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HAVE_STRUCT_ADDRINFO=0 |
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fi |
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dnl Append $HOSTENT_LIB to GETADDRINFO_LIB, avoiding gratuitous duplicates. |
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case " $GETADDRINFO_LIB " in |
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*" $HOSTENT_LIB "*) ;; |
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*) GETADDRINFO_LIB="$GETADDRINFO_LIB $HOSTENT_LIB" ;; |
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esac |
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dnl Append $SERVENT_LIB to GETADDRINFO_LIB, avoiding gratuitous duplicates. |
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case " $GETADDRINFO_LIB " in |
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*" $SERVENT_LIB "*) ;; |
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*) GETADDRINFO_LIB="$GETADDRINFO_LIB $SERVENT_LIB" ;; |
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esac |
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dnl Append $INET_NTOP_LIB to GETADDRINFO_LIB, avoiding gratuitous duplicates. |
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case " $GETADDRINFO_LIB " in |
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*" $INET_NTOP_LIB "*) ;; |
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*) GETADDRINFO_LIB="$GETADDRINFO_LIB $INET_NTOP_LIB" ;; |
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esac |
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]) |
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