--- embedaddon/php/Zend/acinclude.m4	2012/05/29 12:34:36	1.1.1.2
+++ embedaddon/php/Zend/acinclude.m4	2013/10/14 08:02:46	1.1.1.4
@@ -1,10 +1,10 @@
-dnl $Id: acinclude.m4,v 1.1.1.2 2012/05/29 12:34:36 misho Exp $
+dnl $Id: acinclude.m4,v 1.1.1.4 2013/10/14 08:02:46 misho Exp $
 dnl
 dnl This file contains local autoconf functions.
 
 AC_DEFUN([LIBZEND_BISON_CHECK],[
   # we only support certain bison versions
-  bison_version_list="1.28 1.35 1.75 1.875 2.0 2.1 2.2 2.3 2.4 2.4.1 2.4.2 2.4.3 2.5"
+  bison_version_list="1.28 1.35 1.75 1.875 2.0 2.1 2.2 2.3 2.4 2.4.1 2.4.2 2.4.3 2.5 2.5.1 2.6 2.6.1 2.6.2 2.6.4"
 
   # for standalone build of Zend Engine
   test -z "$SED" && SED=sed