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/aux_/config/has_xxx.hpp b/ndnboost/mpl/aux_/config/has_xxx.hpp
new file mode 100644
index 0000000..1cff8af
--- /dev/null
+++ b/ndnboost/mpl/aux_/config/has_xxx.hpp
@@ -0,0 +1,34 @@
+
+#ifndef BOOST_MPL_AUX_CONFIG_HAS_XXX_HPP_INCLUDED
+#define BOOST_MPL_AUX_CONFIG_HAS_XXX_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2002-2004
+// Copyright David Abrahams 2002-2003
+//
+// 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: has_xxx.hpp 63518 2010-07-02 08:32:03Z agurtovoy $
+// $Date: 2010-07-02 01:32:03 -0700 (Fri, 02 Jul 2010) $
+// $Revision: 63518 $
+
+#include <ndnboost/mpl/aux_/config/overload_resolution.hpp>
+#include <ndnboost/mpl/aux_/config/workaround.hpp>
+
+// agurt, 11/jan/03: signals a stub-only 'has_xxx' implementation
+
+#if !defined(BOOST_MPL_CFG_NO_HAS_XXX) \
+ && ( defined(BOOST_MPL_CFG_BROKEN_OVERLOAD_RESOLUTION) \
+ || BOOST_WORKAROUND(__GNUC__, <= 2) \
+ || BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x840)) \
+ )
+
+# define BOOST_MPL_CFG_NO_HAS_XXX
+# define BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE
+
+#endif
+
+#endif // BOOST_MPL_AUX_CONFIG_HAS_XXX_HPP_INCLUDED