X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fsockpfaf.m4;h=391abea24f9ecd056198b7a464d05abbe4b9eff6;hb=272a4999b3891f75cec1544a46a01a59b6932053;hp=a0527f1df6e6fbb686fe64041b33775cd53fd835;hpb=63c34db808cb3e866dac9cf3e7d856a42751f064;p=gnulib.git

diff --git a/m4/sockpfaf.m4 b/m4/sockpfaf.m4
index a0527f1df..391abea24 100644
--- a/m4/sockpfaf.m4
+++ b/m4/sockpfaf.m4
@@ -1,10 +1,8 @@
-# sockpfaf.m4 serial 1
-dnl Copyright (C) 2004 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License.  As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# sockpfaf.m4 serial 4
+dnl Copyright (C) 2004, 2006 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
 
 dnl Test for some common socket protocol families (PF_INET, PF_INET6, ...)
 dnl and some common address families (AF_INET, AF_INET6, ...).
@@ -15,11 +13,21 @@ dnl From Bruno Haible.
 
 AC_DEFUN([gl_SOCKET_FAMILIES],
 [
+  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
+  AC_CHECK_HEADERS_ONCE([netinet/in.h])
+
   AC_MSG_CHECKING(for IPv4 sockets)
   AC_CACHE_VAL(gl_cv_socket_ipv4,
     [AC_TRY_COMPILE([#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
-#include <netinet/in.h>],
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif],
 [int x = AF_INET; struct in_addr y; struct sockaddr_in z;],
        gl_cv_socket_ipv4=yes, gl_cv_socket_ipv4=no)])
   AC_MSG_RESULT($gl_cv_socket_ipv4)
@@ -30,8 +38,15 @@ AC_DEFUN([gl_SOCKET_FAMILIES],
   AC_MSG_CHECKING(for IPv6 sockets)
   AC_CACHE_VAL(gl_cv_socket_ipv6,
     [AC_TRY_COMPILE([#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
-#include <netinet/in.h>],
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h>
+#endif],
 [int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;],
        gl_cv_socket_ipv6=yes, gl_cv_socket_ipv6=no)])
   AC_MSG_RESULT($gl_cv_socket_ipv6)