--- boost/smart_ptr/detail/sp_counted_base.hpp.orig	2011-12-20 19:36:55.000000000 -0500
+++ boost/smart_ptr/detail/sp_counted_base.hpp	2012-02-24 11:18:41.000000000 -0500
@@ -44,6 +44,9 @@
 #elif defined(__HP_aCC) && defined(__ia64)
 # include <boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp>
 
+#elif defined( __IBMCPP__ ) && defined( __powerpc )
+# include <boost/smart_ptr/detail/sp_counted_base_vacpp_ppc.hpp>
+
 #elif defined( __MWERKS__ ) && defined( __POWERPC__ )
 # include <boost/smart_ptr/detail/sp_counted_base_cw_ppc.hpp>
 
@@ -62,9 +65,6 @@
 #elif defined( WIN32 ) || defined( _WIN32 ) || defined( __WIN32__ ) || defined(__CYGWIN__)
 # include <boost/smart_ptr/detail/sp_counted_base_w32.hpp>
 
-#elif defined( _AIX )
-# include <boost/smart_ptr/detail/sp_counted_base_aix.hpp>
-
 #elif !defined( BOOST_HAS_THREADS )
 # include <boost/smart_ptr/detail/sp_counted_base_nt.hpp>