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_apply.hpp b/ndnboost/mpl/aux_/config/has_apply.hpp
new file mode 100644
index 0000000..0daed5a
--- /dev/null
+++ b/ndnboost/mpl/aux_/config/has_apply.hpp
@@ -0,0 +1,32 @@
+
+#ifndef BOOST_MPL_AUX_CONFIG_HAS_APPLY_HPP_INCLUDED
+#define BOOST_MPL_AUX_CONFIG_HAS_APPLY_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 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: has_apply.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/has_xxx.hpp>
+#include <ndnboost/mpl/aux_/config/msvc.hpp>
+#include <ndnboost/mpl/aux_/config/workaround.hpp>
+
+#if !defined(BOOST_MPL_CFG_NO_HAS_APPLY) \
+ && ( defined(BOOST_MPL_CFG_NO_HAS_XXX) \
+ || BOOST_WORKAROUND(__EDG_VERSION__, < 300) \
+ || BOOST_WORKAROUND(BOOST_MSVC, <= 1300) \
+ || BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3202)) \
+ )
+
+# define BOOST_MPL_CFG_NO_HAS_APPLY
+
+#endif
+
+#endif // BOOST_MPL_AUX_CONFIG_HAS_APPLY_HPP_INCLUDED