X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fgetdomainname.m4;h=94a8717ca01aad9777043c67463aaa2394865bc7;hb=42d1eda5dcce2d68deab7a642e7f29bcd7144a0d;hp=744d646c9445d0820b33a6a660647ffeb01fb687;hpb=9859974cc496b2bd84d80476e347ea866251261b;p=gnulib.git

diff --git a/m4/getdomainname.m4 b/m4/getdomainname.m4
index 744d646c9..94a8717ca 100644
--- a/m4/getdomainname.m4
+++ b/m4/getdomainname.m4
@@ -1,15 +1,19 @@
-# getdomainname.m4 serial 1
-dnl Copyright (C) 2002, 2003 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.
+# getdomainname.m4 serial 4
+dnl Copyright (C) 2002-2003, 2008, 2009 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.
 
 AC_DEFUN([gl_FUNC_GETDOMAINNAME],
 [
-  AC_REPLACE_FUNCS(getdomainname)
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
+  dnl Persuade glibc <unistd.h> to declare getdomainname().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_REPLACE_FUNCS([getdomainname])
   if test $ac_cv_func_getdomainname = no; then
+    HAVE_GETDOMAINNAME=0
     gl_PREREQ_GETDOMAINNAME
   fi
 ])