$OpenBSD: patch-src_include_thread_h,v 1.1 2012/05/16 12:09:35 sthen Exp $
--- src/include/thread.h.orig	Wed May 16 05:35:18 2012
+++ src/include/thread.h	Wed May 16 05:36:30 2012
@@ -103,7 +103,7 @@
 #endif
 
 #if defined(__GNUC__) && (defined(_GLIBCXX_ATOMIC_BUILTINS) || (__GNUC__ * 100 + __GNUC_MINOR__ >= 401))
-#if !defined(__FreeBSD__) || defined(__x86_64__)
+#if !(defined(__FreeBSD__) || defined(__OpenBSD__)) || defined(__x86_64__)
 #define USE_GCC_ATOMICS
 #endif
 #endif
