Avoid some autoconf warnings.

[gnulib.git] / m4 / vasprintf.m4

diff --git a/m4/vasprintf.m4 b/m4/vasprintf.m4
index 4f0c79a..074b03c 100644 (file)
--- a/m4/vasprintf.m4
+++ b/m4/vasprintf.m4
@@ -1,4 +1,4 @@
-# vasprintf.m4 serial 5
+# vasprintf.m4 serial 6
 dnl Copyright (C) 2002-2003, 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,
@@ -31,7 +31,7 @@ AC_DEFUN([gl_REPLACE_VASPRINTF],
 AC_DEFUN([gl_PREREQ_VASPRINTF_H],
 [
   dnl Persuade glibc <stdio.h> to declare asprintf() and vasprintf().
-  AC_REQUIRE([AC_GNU_SOURCE])
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
 ])
 
 # Prerequisites of lib/vasprintf.c.