From 0bf4d9ec2bebe060ab3fe89a6a917f4202a1f14b Mon Sep 17 00:00:00 2001
From: Vadim Pisarevsky <no@email>
Date: Thu, 21 Jul 2011 19:50:20 +0000
Subject: [PATCH] fixed Xcode 4.1 compile errors in png codec in highgui

---
 modules/highgui/src/grfmt_png.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/highgui/src/grfmt_png.cpp b/modules/highgui/src/grfmt_png.cpp
index 1cb37e458..c91a12748 100644
--- a/modules/highgui/src/grfmt_png.cpp
+++ b/modules/highgui/src/grfmt_png.cpp
@@ -56,6 +56,7 @@
 #else
 #include <png.h>
 #endif
+#include <zlib.h>
 #include "grfmt_png.hpp"
 
 namespace cv