add boost on mac

macx64/include/boost/qvm/enable_if.hpp

@@ -0,0 +1,24 @@
+//Copyright (c) 2008-2016 Emil Dotchevski and Reverge Studios, Inc.
+
+//Distributed under the Boost Software License, Version 1.0. (See accompanying
+//file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef UUID_A4FA0794391911DF85A6622B56D89593
+#define UUID_A4FA0794391911DF85A6622B56D89593
+
+#include <boost/utility/enable_if.hpp>
+
+namespace
+boost
+    {
+    namespace
+    qvm
+        {
+        using boost::enable_if;
+        using boost::enable_if_c;
+        using boost::lazy_enable_if;
+        using boost::lazy_enable_if_c;
+        }
+    }
+
+#endif