From fb8d9adf4f00fda87b607384a728993caa6d1aaa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20H=C3=A4ggstr=C3=B6m?= <kalvdans@gmail.com>
Date: Sun, 28 May 2017 21:47:25 +0200
Subject: [PATCH] Include declaration of fsincos.

Fix compilation warning about fsincos undeclared on Linux by defining
_GNU_SOURCE before including <math.h>
---
 mcpwm_foc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mcpwm_foc.c b/mcpwm_foc.c
index 00dfc4bb..6814da3e 100644
--- a/mcpwm_foc.c
+++ b/mcpwm_foc.c
@@ -22,6 +22,8 @@
  *      Author: benjamin
  */
 
+#define _GNU_SOURCE         /* for sincosf */
+
 #include "mcpwm_foc.h"
 #include "mc_interface.h"
 #include "ch.h"