X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fdup2.m4;h=054982359e8797502185fdd66064a47c7d3eedfd;hb=2354d5ead305b61c925e53bcfb73d47de7c53162;hp=727366946603dc63a228a717373d62fd18ba1841;hpb=53b8fa05726a7fb30010e42ce02e44a35f0d7489;p=gnulib.git

diff --git a/m4/dup2.m4 b/m4/dup2.m4
index 727366946..054982359 100644
--- a/m4/dup2.m4
+++ b/m4/dup2.m4
@@ -1,21 +1,15 @@
-# dup2.m4 serial 1
-dnl Copyright (C) 2002 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.
+#serial 5
+dnl Copyright (C) 2002, 2005, 2007 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_DUP2],
 [
-  AC_REPLACE_FUNCS(dup2)
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_CHECK_FUNCS_ONCE([dup2])
   if test $ac_cv_func_dup2 = no; then
-    gl_PREREQ_DUP2
+    HAVE_DUP2=0
+    AC_LIBOBJ([dup2])
   fi
 ])
-
-# Prerequisites of lib/dup2.c.
-AC_DEFUN([gl_PREREQ_DUP2], [
-  AC_CHECK_HEADERS_ONCE(fcntl.h unistd.h)
-])
-