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# sockpfaf.m4 serial 10 |
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dnl Copyright (C) 2004, 2006, 2009-2023 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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dnl Test for some common socket protocol families (PF_INET, PF_INET6, ...) |
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dnl and some common address families (AF_INET, AF_INET6, ...). |
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dnl This test assumes that a system supports an address family if and only if |
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dnl it supports the corresponding protocol family. |
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dnl From Bruno Haible. |
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AC_DEFUN([gl_SOCKET_FAMILIES], |
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[ |
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AC_REQUIRE([gl_SYS_SOCKET_H]) |
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AC_CHECK_HEADERS_ONCE([netinet/in.h]) |
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AC_CACHE_CHECK([for IPv4 sockets], |
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[gl_cv_socket_ipv4], |
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#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_NETINET_IN_H |
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#include <netinet/in.h> |
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#endif |
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#ifdef HAVE_WINSOCK2_H |
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#include <winsock2.h> |
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#endif]], |
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[[int x = AF_INET; struct in_addr y; struct sockaddr_in z; |
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if (&x && &y && &z) return 0;]])], |
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gl_cv_socket_ipv4=yes, gl_cv_socket_ipv4=no)]) |
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if test $gl_cv_socket_ipv4 = yes; then |
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AC_DEFINE([HAVE_IPV4], [1], [Define to 1 if <sys/socket.h> defines AF_INET.]) |
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fi |
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AC_CACHE_CHECK([for IPv6 sockets], |
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[gl_cv_socket_ipv6], |
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#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_NETINET_IN_H |
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#include <netinet/in.h> |
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#endif |
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#ifdef HAVE_WINSOCK2_H |
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#include <winsock2.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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[[int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z; |
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if (&x && &y && &z) return 0;]])], |
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gl_cv_socket_ipv6=yes, gl_cv_socket_ipv6=no)]) |
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if test $gl_cv_socket_ipv6 = yes; then |
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AC_DEFINE([HAVE_IPV6], [1], [Define to 1 if <sys/socket.h> defines AF_INET6.]) |
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fi |
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]) |
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AC_DEFUN([gl_SOCKET_FAMILY_UNIX], |
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[ |
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AC_REQUIRE([gl_SYS_SOCKET_H]) |
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AC_CHECK_HEADERS_ONCE([sys/un.h]) |
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AC_CACHE_CHECK([for UNIX domain sockets], |
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[gl_cv_socket_unix], |
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#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_SYS_UN_H |
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#include <sys/un.h> |
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#endif |
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#ifdef HAVE_WINSOCK2_H |
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#include <winsock2.h> |
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#endif]], |
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[[int x = AF_UNIX; struct sockaddr_un y; |
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if (&x && &y) return 0;]])], |
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gl_cv_socket_unix=yes, gl_cv_socket_unix=no)]) |
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if test $gl_cv_socket_unix = yes; then |
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AC_DEFINE([HAVE_UNIXSOCKET], [1], [Define to 1 if <sys/socket.h> defines AF_UNIX.]) |
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fi |
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]) |
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