Add CVS checkout update instructions.

[gnulib.git] / m4 / mempcpy.m4

diff --git a/m4/mempcpy.m4 b/m4/mempcpy.m4
index e2b39d0..13293b5 100644 (file)
--- a/m4/mempcpy.m4
+++ b/m4/mempcpy.m4
@@ -1,4 +1,4 @@
-# mempcpy.m4 serial 6
+# mempcpy.m4 serial 8
 dnl Copyright (C) 2003, 2004, 2006, 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,
@@ -7,7 +7,10 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_MEMPCPY],
 [
   dnl Persuade glibc <string.h> to declare mempcpy().
-  AC_REQUIRE([AC_GNU_SOURCE])
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  dnl The mempcpy() declaration in lib/string_.h uses 'restrict'.
+  AC_REQUIRE([AC_C_RESTRICT])
 
   AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
   AC_REPLACE_FUNCS(mempcpy)