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_/iter_fold_impl.hpp b/ndnboost/mpl/aux_/iter_fold_impl.hpp
new file mode 100644
index 0000000..c67b1e7
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+++ b/ndnboost/mpl/aux_/iter_fold_impl.hpp
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+
+#ifndef BOOST_MPL_AUX_ITER_FOLD_IMPL_HPP_INCLUDED
+#define BOOST_MPL_AUX_ITER_FOLD_IMPL_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2000-2004
+//
+// 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: iter_fold_impl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
+// $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
+// $Revision: 49267 $
+
+#if !defined(BOOST_MPL_PREPROCESSING_MODE)
+# include <ndnboost/mpl/next_prior.hpp>
+# include <ndnboost/mpl/apply.hpp>
+# include <ndnboost/mpl/aux_/config/ctps.hpp>
+# if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+# include <ndnboost/mpl/if.hpp>
+# include <ndnboost/type_traits/is_same.hpp>
+# endif
+#endif
+
+#include <ndnboost/mpl/aux_/config/use_preprocessed.hpp>
+
+#if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
+ && !defined(BOOST_MPL_PREPROCESSING_MODE)
+
+# define BOOST_MPL_PREPROCESSED_HEADER iter_fold_impl.hpp
+# include <ndnboost/mpl/aux_/include_preprocessed.hpp>
+
+#else
+
+# define AUX778076_FOLD_IMPL_OP(iter) iter
+# define AUX778076_FOLD_IMPL_NAME_PREFIX iter_fold
+# include <ndnboost/mpl/aux_/fold_impl_body.hpp>
+
+#endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
+#endif // BOOST_MPL_AUX_ITER_FOLD_IMPL_HPP_INCLUDED