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diff --git a/dev-lang/php/files/php-5.6-no-bison-warnings.patch b/dev-lang/php/files/php-5.6-no-bison-warnings.patch
new file mode 100644
index 0000000..1896659
--- /dev/null
+++ b/dev-lang/php/files/php-5.6-no-bison-warnings.patch
@@ -0,0 +1,42 @@
+From d3466a04345b31dfc62d94fe994b40321a6418ec Mon Sep 17 00:00:00 2001
+From: Michael Orlitzky <michael@orlitzky.com>
+Date: Thu, 29 Sep 2016 15:43:06 -0400
+Subject: [PATCH 1/1] Zend/acinclude.m4: don't warn about >=bison-3.0.1
+ versions.
+
+The PHP configure script will emit a warning if it thinks your bison
+version is insufficient:
+
+  WARNING: This bison version is not supported for regeneration of
+  the Zend/PHP parsers (found: 3.0, min: 204, excluded: 3.0).
+
+However, there is an error in the test that causes it to treat all
+3.0.x versions as if they were 3.0. The result is that users get
+warned about a perfectly acceptable version of bison.
+
+This patch is meant only for Gentoo, where we can require a working
+version of bison (something newer than 3.0.1). Having done so, this
+patch removes the check and the WARNING.
+
+Gentoo-Bug: 593278
+PHP-Bug: 69055
+---
+ Zend/acinclude.m4 | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Zend/acinclude.m4 b/Zend/acinclude.m4
+index 7fa8c99..9d6cb1d 100644
+--- a/Zend/acinclude.m4
++++ b/Zend/acinclude.m4
+@@ -9,7 +9,7 @@ AC_DEFUN([LIBZEND_BISON_CHECK],[
+   # non-working versions, e.g. "3.0 3.2";
+   # remove "none" when introducing the first incompatible bison version an 
+   # separate any following additions by spaces
+-  bison_version_exclude="3.0"
++  bison_version_exclude=""
+ 
+   # for standalone build of Zend Engine
+   test -z "$SED" && SED=sed
+-- 
+2.7.3
+