From 742a0106fefefe5ee1638271a1f59b69fb0ba015 Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Fri, 9 Aug 2013 08:32:39 +0200
Subject: [PATCH] use $YACC instead of 'bison' as suggested by Yasuo

---
 Zend/acinclude.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Zend/acinclude.m4 b/Zend/acinclude.m4
index db6aee2f4a..fe3ab63beb 100644
--- a/Zend/acinclude.m4
+++ b/Zend/acinclude.m4
@@ -17,7 +17,7 @@ AC_DEFUN([LIBZEND_BISON_CHECK],[
   bison_version=none
   if test "$YACC"; then
     AC_CACHE_CHECK([for bison version], php_cv_bison_version, [
-      bison_version_vars=`bison --version 2> /dev/null | grep 'GNU Bison' | cut -d ' ' -f 4 | $SED -e 's/\./ /g' | tr -d a-z`
+      bison_version_vars=`$YACC --version 2> /dev/null | grep 'GNU Bison' | cut -d ' ' -f 4 | $SED -e 's/\./ /g' | tr -d a-z`
       php_cv_bison_version=invalid
       if test -n "$bison_version_vars"; then
         set $bison_version_vars
-- 
2.50.1