In common.h, define func_lib for function objects. In configure.ac, define HAVE_STD_FUNCTION and HAVE_BOOST_FUNCTION. Include function headers in ndnboost.
diff --git a/ndnboost/mpl/numeric_cast.hpp b/ndnboost/mpl/numeric_cast.hpp
new file mode 100644
index 0000000..603bf75
--- /dev/null
+++ b/ndnboost/mpl/numeric_cast.hpp
@@ -0,0 +1,41 @@
+
+#ifndef BOOST_MPL_NUMERIC_CAST_HPP_INCLUDED
+#define BOOST_MPL_NUMERIC_CAST_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2003-2004
+//
+// 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)
+//
+// See http://www.boost.org/libs/mpl for documentation.
+
+// $Id: numeric_cast.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
+// $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
+// $Revision: 49267 $
+
+#include <ndnboost/mpl/aux_/config/msvc.hpp>
+#include <ndnboost/mpl/aux_/config/workaround.hpp>
+
+// agurt 21/sep/04: portability macro for the sake of MSVC 6.x-7.0;
+// resolves conflicts with 'ndnboost::numeric_cast' function template.
+// use it in your own code _only_ if you care about compatibility with
+// these outdated compilers!
+#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) || BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x570) )
+# define BOOST_MPL_AUX_NUMERIC_CAST numeric_cast_
+#else
+# define BOOST_MPL_AUX_NUMERIC_CAST numeric_cast
+#endif
+
+namespace ndnboost { namespace mpl {
+
+// no default implementation; the definition is needed to make MSVC happy
+
+template< typename SourceTag, typename TargetTag > struct BOOST_MPL_AUX_NUMERIC_CAST
+{
+ template< typename N > struct apply;
+};
+
+}}
+
+#endif // BOOST_MPL_NUMERIC_CAST_HPP_INCLUDED