From c3cfd83f6cd3e2f54e0f601e7da038a57c16e5e0 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Mon, 17 Dec 2018 10:04:10 +0100
Subject: [PATCH] include cmath header for definition of M_PI

---
 src/Gui/WinNativeGestureRecognizers.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Gui/WinNativeGestureRecognizers.cpp b/src/Gui/WinNativeGestureRecognizers.cpp
index 76a1aee543..af4d87b21f 100644
--- a/src/Gui/WinNativeGestureRecognizers.cpp
+++ b/src/Gui/WinNativeGestureRecognizers.cpp
@@ -28,6 +28,8 @@
 # include <QWidget>
 # ifdef FC_OS_WIN32
 # include <Windows.h>
+# define _USE_MATH_DEFINES
+# include <cmath>
 # endif
 # include <cassert>
 #endif