#! /bin/sh
-# Copyright (C) 2010-2012 Free Software Foundation, Inc.
+# Copyright (C) 2010-2013 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# Remove Yacc from the environment, so that it won't interfere
# with 'make -e' below.
-unset YACC || :
+unset YACC
cat >> configure.ac <<'END'
AC_SUBST([CC], [false])