238 lines
6.6 KiB
Text
238 lines
6.6 KiB
Text
# getaddrinfo.m4 serial 34
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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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#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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#include <stddef.h>
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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="$LIBS -lws2_32"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#ifdef HAVE_WS2TCPIP_H
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#include <ws2tcpip.h>
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#endif
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#include <stddef.h>
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]], [[getaddrinfo(NULL, NULL, NULL, NULL);]])], [gl_cv_w32_getaddrinfo=yes])
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LIBS="$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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#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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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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