-# Check for fnmatch.
+# Check for fnmatch - serial 2.
# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
# Foundation, Inc.
AC_DEFUN([gl_FUNC_FNMATCH_GNU],
[
dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
- AC_REQUIRE([AC_GNU_SOURCE])
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
FNMATCH_H=
_AC_FUNC_FNMATCH_IF([GNU], [ac_cv_func_fnmatch_gnu],