X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fmemrchr.m4;h=8070d5fece2b3368e221fbdc6deabd668d105dec;hb=f1fcb8539c9d1c7d9cefb25ce5c07a099ea1f148;hp=8d511b06187167f4ce3eaa1dd713edb9617dd048;hpb=1e4ece4ab9850fbfa88c9ec43ea518c7bc266792;p=gnulib.git

diff --git a/m4/memrchr.m4 b/m4/memrchr.m4
index 8d511b061..8070d5fec 100644
--- a/m4/memrchr.m4
+++ b/m4/memrchr.m4
@@ -1,4 +1,4 @@
-# memrchr.m4 serial 6
+# memrchr.m4 serial 8
 dnl Copyright (C) 2002, 2003, 2005, 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,
@@ -7,8 +7,9 @@ dnl with or without modifications, as long as this notice is preserved.
 AC_DEFUN([gl_FUNC_MEMRCHR],
 [
   dnl Persuade glibc <string.h> to declare memrchr().
-  AC_REQUIRE([AC_GNU_SOURCE])
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
 
+  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
   AC_CHECK_DECLS_ONCE([memrchr])
   if test $ac_cv_have_decl_memrchr = no; then
     HAVE_DECL_MEMRCHR=0