2 dnl Copyright (C) 2004, 2006 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 dnl Test for some common socket protocol families (PF_INET, PF_INET6, ...)
8 dnl and some common address families (AF_INET, AF_INET6, ...).
9 dnl This test assumes that a system supports an address family if and only if
10 dnl it supports the corresponding protocol family.
12 dnl From Bruno Haible.
14 AC_DEFUN([gl_SOCKET_FAMILIES],
16 AC_CHECK_HEADERS_ONCE(sys/socket.h netinet/in.h winsock2.h)
18 AC_MSG_CHECKING(for IPv4 sockets)
19 AC_CACHE_VAL(gl_cv_socket_ipv4,
20 [AC_TRY_COMPILE([#include <sys/types.h>
21 #ifdef HAVE_SYS_SOCKET_H
22 #include <sys/socket.h>
24 #ifdef HAVE_NETINET_IN_H
25 #include <netinet/in.h>
27 #ifdef HAVE_WINSOCK2_H
30 [int x = AF_INET; struct in_addr y; struct sockaddr_in z;],
31 gl_cv_socket_ipv4=yes, gl_cv_socket_ipv4=no)])
32 AC_MSG_RESULT($gl_cv_socket_ipv4)
33 if test $gl_cv_socket_ipv4 = yes; then
34 AC_DEFINE(HAVE_IPV4, 1, [Define to 1 if <sys/socket.h> defines AF_INET.])
37 AC_MSG_CHECKING(for IPv6 sockets)
38 AC_CACHE_VAL(gl_cv_socket_ipv6,
39 [AC_TRY_COMPILE([#include <sys/types.h>
40 #ifdef HAVE_SYS_SOCKET_H
41 #include <sys/socket.h>
43 #ifdef HAVE_NETINET_IN_H
44 #include <netinet/in.h>
46 #ifdef HAVE_WINSOCK2_H
49 [int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;],
50 gl_cv_socket_ipv6=yes, gl_cv_socket_ipv6=no)])
51 AC_MSG_RESULT($gl_cv_socket_ipv6)
52 if test $gl_cv_socket_ipv6 = yes; then
53 AC_DEFINE(HAVE_IPV6, 1, [Define to 1 if <sys/socket.h> defines AF_INET6.])