From 1c53398b75196381e0ce914e60622d235cc4e824 Mon Sep 17 00:00:00 2001
From: Jack Andersen <jackoalan@gmail.com>
Date: Wed, 30 Dec 2015 18:54:11 -1000
Subject: [PATCH] Additional ARC header check for Cocoa

---
 lib/mac/CocoaCommon.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/mac/CocoaCommon.hpp b/lib/mac/CocoaCommon.hpp
index a8ced47..f457a54 100644
--- a/lib/mac/CocoaCommon.hpp
+++ b/lib/mac/CocoaCommon.hpp
@@ -2,6 +2,10 @@
 #define BOO_COCOACOMMON_HPP
 #if __APPLE__
 
+#if !__has_feature(objc_arc)
+#error ARC Required
+#endif
+
 #include <Availability.h>
 #include <utility>