$OpenBSD: patch-boost_config_suffix_hpp,v 1.6 2009/07/27 11:31:08 kurt Exp $
--- boost/config/suffix.hpp.orig	Thu Feb  9 18:29:09 2006
+++ boost/config/suffix.hpp	Mon Jan  7 20:59:55 2008
@@ -207,7 +207,7 @@
 // from here then add to the appropriate compiler section):
 //
 #if (defined(__MT__) || defined(_MT) || defined(_REENTRANT) \
-    || defined(_PTHREADS)) && !defined(BOOST_HAS_THREADS)
+    || defined(_PTHREADS) || defined(_POSIX_THREADS)) && !defined(BOOST_HAS_THREADS)
 #  define BOOST_HAS_THREADS
 #endif
 
