--- boost_1_57_0.orig/boost/atomic/detail/caps_gcc_atomic.hpp	2014-10-01 04:30:37.000000000 -0500
+++ boost_1_57_0/boost/atomic/detail/caps_gcc_atomic.hpp	2015-05-12 17:26:04.821955497 -0500
@@ -128,7 +128,7 @@
 #define BOOST_ATOMIC_CHAR32_T_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
 #define BOOST_ATOMIC_CHAR16_T_LOCK_FREE BOOST_ATOMIC_INT16_LOCK_FREE
 
-#define BOOST_ATOMIC_THREAD_FENCE 2
-#define BOOST_ATOMIC_SIGNAL_FENCE 2
+#define BOOST_ATOMIC_THREAD_FENCE 0
+#define BOOST_ATOMIC_SIGNAL_FENCE 0
 
 #endif // BOOST_ATOMIC_DETAIL_CAPS_GCC_ATOMIC_HPP_INCLUDED_