--- boost/typeof/typeof.hpp.orig	2011-08-06 14:46:43.000000000 -0400
+++ boost/typeof/typeof.hpp	2011-11-09 11:16:17.000000000 -0500
@@ -171,6 +171,13 @@
 #         define BOOST_TYPEOF_KEYWORD __typeof__
 #     endif
 #   endif
+#elif defined(__IBMCPP__)
+#   ifndef BOOST_TYPEOF_EMULATION
+#       ifndef BOOST_TYPEOF_NATIVE
+#           define BOOST_TYPEOF_NATIVE
+#       endif
+#       define BOOST_TYPEOF_KEYWORD __typeof__
+#   endif
 #else //unknown compiler
 #   ifndef BOOST_TYPEOF_NATIVE
 #       ifndef BOOST_TYPEOF_EMULATION