--- /dev/null
+--- ./Zend/acinclude.m4 2013-03-20 15:09:27.000000000 +0100
++++ ./Zend/acinclude.m4.new 2013-03-25 21:35:27.654016588 +0100
+@@ -17,12 +17,7 @@
+ if test -n "$bison_version_vars"; then
+ set $bison_version_vars
+ bison_version="${1}.${2}"
+- for bison_check_version in $bison_version_list; do
+- if test "$bison_version" = "$bison_check_version"; then
+- php_cv_bison_version="$bison_check_version (ok)"
+- break
+- fi
+- done
++ php_cv_bison_version="$bison_version (ok)"
+ fi
+ ])
+ fi