Track CVS Autoconf on AC_USE_SYSTEM_EXTENSIONS.

[gnulib.git] / m4 / memmem.m4

diff --git a/m4/memmem.m4 b/m4/memmem.m4
index e6d4006..e6a3da1 100644 (file)
--- a/m4/memmem.m4
+++ b/m4/memmem.m4
@@ -1,4 +1,4 @@
-# memmem.m4 serial 4
+# memmem.m4 serial 5
 dnl Copyright (C) 2002, 2003, 2004, 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 +7,7 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_MEMMEM],
 [
   dnl Persuade glibc <string.h> to declare memmem().
-  AC_REQUIRE([AC_GNU_SOURCE])
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
 
   AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
   AC_REPLACE_FUNCS(memmem)