If no HAVE_STD_SHARED_PTR or HAVE_BOOST_SHARED_PTR then set ptr_lib to ndnboost in the boost headers in this distribution.
diff --git a/boost/config/compiler/greenhills.hpp b/boost/config/compiler/greenhills.hpp
new file mode 100644
index 0000000..038b6b2
--- /dev/null
+++ b/boost/config/compiler/greenhills.hpp
@@ -0,0 +1,28 @@
+// (C) Copyright John Maddock 2001.
+// Use, modification and distribution are subject to the
+// Boost Software License, Version 1.0. (See accompanying file
+// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// See http://www.boost.org for most recent version.
+
+// Greenhills C++ compiler setup:
+
+#define BOOST_COMPILER "Greenhills C++ version " BOOST_STRINGIZE(__ghs)
+
+#include "boost/config/compiler/common_edg.hpp"
+
+//
+// versions check:
+// we don't support Greenhills prior to version 0:
+#if __ghs < 0
+# error "Compiler not supported or configured - please reconfigure"
+#endif
+//
+// last known and checked version is 0:
+#if (__ghs > 0)
+# if defined(BOOST_ASSERT_CONFIG)
+# error "Unknown compiler version - please run the configure tests and report the results"
+# endif
+#endif
+
+