From c1d7fe3a8f01ffe47e727c7e9e05c5504e5c834e Mon Sep 17 00:00:00 2001
From: Dane Springmeyer <dane@mapbox.com>
Date: Thu, 19 Mar 2015 12:11:21 -0700
Subject: [PATCH] fix compile error on windows: error C2065: 'M_PI': undeclared
 identifier

---
 src/math.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/math.cpp b/src/math.cpp
index b27431343..1fd2a4fff 100644
--- a/src/math.cpp
+++ b/src/math.cpp
@@ -22,6 +22,7 @@
 
 // mapnik
 #include <mapnik/util/math.hpp>
+#include <mapnik/global.hpp>
 
 // stl
 #include <cmath>