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/preprocessor/facilities/identity.hpp b/boost/preprocessor/facilities/identity.hpp
new file mode 100644
index 0000000..13ec4ca
--- /dev/null
+++ b/boost/preprocessor/facilities/identity.hpp
@@ -0,0 +1,23 @@
+# /* Copyright (C) 2001
+# * Housemarque Oy
+# * http://www.housemarque.com
+# *
+# * Distributed under 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)
+# */
+#
+# /* Revised by Paul Mensonides (2002) */
+#
+# /* See http://www.boost.org for most recent version. */
+#
+# ifndef BOOST_PREPROCESSOR_FACILITIES_IDENTITY_HPP
+# define BOOST_PREPROCESSOR_FACILITIES_IDENTITY_HPP
+#
+# include <boost/preprocessor/facilities/empty.hpp>
+#
+# /* BOOST_PP_IDENTITY */
+#
+# define BOOST_PP_IDENTITY(item) item BOOST_PP_EMPTY
+#
+# endif