$NetBSD: patch-am,v 1.1 2008/01/04 19:58:43 jmmv Exp $

patch based on https://svn.boost.org/trac/boost/ticket/2029

--- tools/build/v2/tools/python.jam.orig	2008-07-15 07:53:41.000000000 -0600
+++ tools/build/v2/tools/python.jam
@@ -649,6 +649,8 @@
         case darwin : return ;
         case windows : return ;
 
+	case *bsd : return  <library>pthread <toolset>gcc:<library>util ;
+
         case hpux : return  <library>rt ;
 
         case aix : return  <library>pthread <library>dl ;