From 8b82ec4c95855cb787e7eae91462c2798eb8006a Mon Sep 17 00:00:00 2001
From: Arjen Hiemstra <ahiemstra@heimr.nl>
Date: Thu, 16 Feb 2017 11:13:20 +0100
Subject: [PATCH] Only include OpenMP headers if we are actually compiling with
 OpenMP

Fixes building on OSX with Clang
---
 src/FffPolygonGenerator.cpp | 5 ++++-
 src/main.cpp                | 6 ++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/FffPolygonGenerator.cpp b/src/FffPolygonGenerator.cpp
index 007590a0..07e0f834 100644
--- a/src/FffPolygonGenerator.cpp
+++ b/src/FffPolygonGenerator.cpp
@@ -2,7 +2,10 @@
 
 #include <algorithm>
 #include <map> // multimap (ordered map allowing duplicate keys)
-#include <omp.h>
+
+#ifdef _OPENMP
+    #include <omp.h>"
+#endif
 
 #include "utils/math.h"
 #include "utils/algorithm.h"
diff --git a/src/main.cpp b/src/main.cpp
index 887e59bf..f68bcb19 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -20,7 +20,9 @@
 
 #include "settings/SettingsToGV.h"
 
-#include <omp.h> // omp_get_num_threads
+#ifdef _OPENMP
+    #include <omp.h> // omp_get_num_threads
+#endif
 
 namespace cura
 {
@@ -437,4 +439,4 @@ int main(int argc, char **argv)
     }
     
     return 0;
-}
\ No newline at end of file
+}