From 010e73010c504435422cf1342c6875aaaaef02cb Mon Sep 17 00:00:00 2001
From: Andrey Pavlenko <no@email>
Date: Mon, 19 Mar 2012 06:17:04 +0000
Subject: [PATCH] fixing compilation on Windows (M_PI was undefined via math.h)

---
 modules/core/include/opencv2/core/core.hpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/core/include/opencv2/core/core.hpp b/modules/core/include/opencv2/core/core.hpp
index dfb807ca2a..1c0e3014fb 100644
--- a/modules/core/include/opencv2/core/core.hpp
+++ b/modules/core/include/opencv2/core/core.hpp
@@ -46,6 +46,8 @@
 #ifndef __OPENCV_CORE_HPP__
 #define __OPENCV_CORE_HPP__
 
+#define _USE_MATH_DEFINES
+
 #include "opencv2/core/types_c.h"
 #include "opencv2/core/version.hpp"