From 0e242ad72c2ace53b3fb7d2a42b19deb8db3f667 Mon Sep 17 00:00:00 2001
From: Lorenz Meier <lm@inf.ethz.ch>
Date: Tue, 9 Jul 2013 18:25:18 +0200
Subject: [PATCH] Fixed windows compile error

---
 libs/mavlink/include/mavlink/v1.0/mavlink_conversions.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libs/mavlink/include/mavlink/v1.0/mavlink_conversions.h b/libs/mavlink/include/mavlink/v1.0/mavlink_conversions.h
index 1dc9088..d893635 100644
--- a/libs/mavlink/include/mavlink/v1.0/mavlink_conversions.h
+++ b/libs/mavlink/include/mavlink/v1.0/mavlink_conversions.h
@@ -1,6 +1,12 @@
 #ifndef  _MAVLINK_CONVERSIONS_H_
 #define  _MAVLINK_CONVERSIONS_H_
 
+/* enable math defines on Windows */
+#ifdef _MSC_VER
+#ifndef _USE_MATH_DEFINES
+#define _USE_MATH_DEFINES
+#endif
+#endif
 #include <math.h>
 
 /**