$OpenBSD: patch-configure_ac,v 1.3 2011/11/21 15:21:33 ajacoutot Exp $
--- configure.ac.orig	Sun Sep 18 15:14:26 2011
+++ configure.ac	Sun Sep 18 17:44:15 2011
@@ -80,10 +80,7 @@ AC_PROG_LEX
 if test "$LEX" != "flex"; then
 	AC_MSG_ERROR(flex is required)
 fi
-AC_PROG_YACC
-if test "$YACC" != "bison -y"; then
-	AC_MSG_ERROR(bison is required)
-fi
+YACC="bison -y"
 AC_LANG([C])
 AC_LANG([C++])
 AC_PROG_CXX
