1# sockpfaf.m4 serial 2 2dnl Copyright (C) 2004 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7dnl Test for some common socket protocol families (PF_INET, PF_INET6, ...) 8dnl and some common address families (AF_INET, AF_INET6, ...). 9dnl This test assumes that a system supports an address family if and only if 10dnl it supports the corresponding protocol family. 11 12dnl From Bruno Haible. 13 14AC_DEFUN([gl_SOCKET_FAMILIES], 15[ 16 AC_MSG_CHECKING(for IPv4 sockets) 17 AC_CACHE_VAL(gl_cv_socket_ipv4, 18 [AC_TRY_COMPILE([#include <sys/types.h> 19#include <sys/socket.h> 20#include <netinet/in.h>], 21[int x = AF_INET; struct in_addr y; struct sockaddr_in z;], 22 gl_cv_socket_ipv4=yes, gl_cv_socket_ipv4=no)]) 23 AC_MSG_RESULT($gl_cv_socket_ipv4) 24 if test $gl_cv_socket_ipv4 = yes; then 25 AC_DEFINE(HAVE_IPV4, 1, [Define to 1 if <sys/socket.h> defines AF_INET.]) 26 fi 27 28 AC_MSG_CHECKING(for IPv6 sockets) 29 AC_CACHE_VAL(gl_cv_socket_ipv6, 30 [AC_TRY_COMPILE([#include <sys/types.h> 31#include <sys/socket.h> 32#include <netinet/in.h>], 33[int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;], 34 gl_cv_socket_ipv6=yes, gl_cv_socket_ipv6=no)]) 35 AC_MSG_RESULT($gl_cv_socket_ipv6) 36 if test $gl_cv_socket_ipv6 = yes; then 37 AC_DEFINE(HAVE_IPV6, 1, [Define to 1 if <sys/socket.h> defines AF_INET6.]) 38 fi 39]) 40