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_/sequence_wrapper.hpp b/ndnboost/mpl/aux_/sequence_wrapper.hpp
new file mode 100644
index 0000000..8ec8f09
--- /dev/null
+++ b/ndnboost/mpl/aux_/sequence_wrapper.hpp
@@ -0,0 +1,292 @@
+
+// NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION
+
+#if !defined(BOOST_PP_IS_ITERATING)
+
+///// header body
+
+// Copyright Aleksey Gurtovoy 2000-2008
+//
+// 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: sequence_wrapper.hpp 49271 2008-10-11 06:46:00Z agurtovoy $
+// $Date: 2008-10-10 23:46:00 -0700 (Fri, 10 Oct 2008) $
+// $Revision: 49271 $
+
+# include <ndnboost/mpl/aux_/config/ctps.hpp>
+# include <ndnboost/mpl/aux_/config/static_constant.hpp>
+# include <ndnboost/mpl/aux_/nttp_decl.hpp>
+
+# include <ndnboost/preprocessor/arithmetic/sub.hpp>
+# include <ndnboost/preprocessor/tuple/elem.hpp>
+# include <ndnboost/preprocessor/enum_params_with_a_default.hpp>
+# include <ndnboost/preprocessor/enum_params.hpp>
+# include <ndnboost/preprocessor/enum.hpp>
+# include <ndnboost/preprocessor/repeat.hpp>
+# include <ndnboost/preprocessor/comma_if.hpp>
+# include <ndnboost/preprocessor/iterate.hpp>
+
+#if defined(BOOST_MPL_PREPROCESSING_MODE)
+# undef LONG_MAX
+#endif
+
+namespace ndnboost { namespace mpl {
+
+#if !defined(AUX778076_SEQUENCE_BASE_NAME)
+# define AUX778076_SEQUENCE_BASE_NAME AUX778076_SEQUENCE_NAME
+#endif
+
+#if !defined(AUX778076_SEQUENCE_INTEGRAL_WRAPPER)
+
+# define AUX778076_SEQUENCE_PARAM_NAME T
+# define AUX778076_SEQUENCE_TEMPLATE_PARAM typename T
+# define AUX778076_SEQUENCE_DEFAULT na
+
+# define AUX778076_SEQUENCE_NAME_N(n) \
+ BOOST_PP_CAT(AUX778076_SEQUENCE_BASE_NAME,n) \
+ /**/
+
+# define AUX778076_SEQUENCE_PARAMS() \
+ BOOST_PP_ENUM_PARAMS( \
+ AUX778076_SEQUENCE_LIMIT \
+ , AUX778076_SEQUENCE_TEMPLATE_PARAM \
+ ) \
+ /**/
+
+# define AUX778076_SEQUENCE_ARGS() \
+ BOOST_PP_ENUM_PARAMS( \
+ AUX778076_SEQUENCE_LIMIT \
+ , T \
+ ) \
+ /**/
+
+# define AUX778076_SEQUENCE_DEFAULT_PARAMS() \
+ BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT( \
+ AUX778076_SEQUENCE_LIMIT \
+ , AUX778076_SEQUENCE_TEMPLATE_PARAM \
+ , AUX778076_SEQUENCE_DEFAULT \
+ ) \
+ /**/
+
+# define AUX778076_SEQUENCE_N_PARAMS(n) \
+ BOOST_PP_ENUM_PARAMS(n, AUX778076_SEQUENCE_TEMPLATE_PARAM) \
+ /**/
+
+# define AUX778076_SEQUENCE_N_ARGS(n) \
+ BOOST_PP_ENUM_PARAMS(n, T) \
+ /**/
+
+# define AUX778076_SEQUENCE_N_PARTIAL_SPEC_ARGS(n) \
+ BOOST_PP_ENUM_PARAMS(n, T) \
+ BOOST_PP_COMMA_IF(n) \
+ BOOST_PP_ENUM( \
+ BOOST_PP_SUB_D(1,AUX778076_SEQUENCE_LIMIT,n) \
+ , BOOST_PP_TUPLE_ELEM_3_2 \
+ , AUX778076_SEQUENCE_DEFAULT \
+ ) \
+ /**/
+
+#else // AUX778076_SEQUENCE_INTEGRAL_WRAPPER
+
+# define AUX778076_SEQUENCE_PARAM_NAME C
+# define AUX778076_SEQUENCE_TEMPLATE_PARAM BOOST_MPL_AUX_NTTP_DECL(long, C)
+# define AUX778076_SEQUENCE_DEFAULT LONG_MAX
+
+# define AUX778076_SEQUENCE_PARAMS() \
+ typename T, BOOST_PP_ENUM_PARAMS( \
+ AUX778076_SEQUENCE_LIMIT \
+ , AUX778076_SEQUENCE_TEMPLATE_PARAM \
+ ) \
+ /**/
+
+# define AUX778076_SEQUENCE_ARGS() \
+ T, BOOST_PP_ENUM_PARAMS( \
+ AUX778076_SEQUENCE_LIMIT \
+ , C \
+ ) \
+ /**/
+
+# define AUX778076_SEQUENCE_DEFAULT_PARAMS() \
+ typename T, \
+ BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT( \
+ AUX778076_SEQUENCE_LIMIT \
+ , AUX778076_SEQUENCE_TEMPLATE_PARAM \
+ , AUX778076_SEQUENCE_DEFAULT \
+ ) \
+ /**/
+
+# define AUX778076_SEQUENCE_N_PARAMS(n) \
+ typename T BOOST_PP_COMMA_IF(n) \
+ BOOST_PP_ENUM_PARAMS(n, AUX778076_SEQUENCE_TEMPLATE_PARAM) \
+ /**/
+
+# if !defined(AUX778076_SEQUENCE_CONVERT_CN_TO)
+# define AUX778076_SEQUENCE_CONVERT_CN_TO(z,n,TARGET) BOOST_PP_CAT(C,n)
+# endif
+
+# define AUX778076_SEQUENCE_N_ARGS(n) \
+ T BOOST_PP_COMMA_IF(n) \
+ BOOST_PP_ENUM(n,AUX778076_SEQUENCE_CONVERT_CN_TO,T) \
+ /**/
+
+# define AUX778076_SEQUENCE_N_PARTIAL_SPEC_ARGS(n) \
+ T, BOOST_PP_ENUM_PARAMS(n, C) \
+ BOOST_PP_COMMA_IF(n) \
+ BOOST_PP_ENUM( \
+ BOOST_PP_SUB_D(1,AUX778076_SEQUENCE_LIMIT,n) \
+ , BOOST_PP_TUPLE_ELEM_3_2 \
+ , AUX778076_SEQUENCE_DEFAULT \
+ ) \
+ /**/
+
+#endif // AUX778076_SEQUENCE_INTEGRAL_WRAPPER
+
+
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+// forward declaration
+template<
+ AUX778076_SEQUENCE_DEFAULT_PARAMS()
+ >
+struct AUX778076_SEQUENCE_NAME;
+#else
+namespace aux {
+template< BOOST_MPL_AUX_NTTP_DECL(int, N) >
+struct BOOST_PP_CAT(AUX778076_SEQUENCE_NAME,_chooser);
+}
+#endif
+
+#define BOOST_PP_ITERATION_PARAMS_1 \
+ (3,(0, AUX778076_SEQUENCE_LIMIT, <ndnboost/mpl/aux_/sequence_wrapper.hpp>))
+#include BOOST_PP_ITERATE()
+
+// real C++ version is already taken care of
+#if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+
+namespace aux {
+// ???_count_args
+#define AUX778076_COUNT_ARGS_PREFIX AUX778076_SEQUENCE_NAME
+#define AUX778076_COUNT_ARGS_DEFAULT AUX778076_SEQUENCE_DEFAULT
+#define AUX778076_COUNT_ARGS_PARAM_NAME AUX778076_SEQUENCE_PARAM_NAME
+#define AUX778076_COUNT_ARGS_TEMPLATE_PARAM AUX778076_SEQUENCE_TEMPLATE_PARAM
+#define AUX778076_COUNT_ARGS_ARITY AUX778076_SEQUENCE_LIMIT
+#define AUX778076_COUNT_ARGS_USE_STANDARD_PP_PRIMITIVES
+#include <ndnboost/mpl/aux_/count_args.hpp>
+
+template<
+ AUX778076_SEQUENCE_PARAMS()
+ >
+struct BOOST_PP_CAT(AUX778076_SEQUENCE_NAME,_impl)
+{
+ typedef aux::BOOST_PP_CAT(AUX778076_SEQUENCE_NAME,_count_args)<
+ BOOST_PP_ENUM_PARAMS(AUX778076_SEQUENCE_LIMIT, AUX778076_SEQUENCE_PARAM_NAME)
+ > arg_num_;
+
+ typedef typename aux::BOOST_PP_CAT(AUX778076_SEQUENCE_NAME,_chooser)< arg_num_::value >
+ ::template result_< AUX778076_SEQUENCE_ARGS() >::type type;
+};
+
+} // namespace aux
+
+template<
+ AUX778076_SEQUENCE_DEFAULT_PARAMS()
+ >
+struct AUX778076_SEQUENCE_NAME
+ : aux::BOOST_PP_CAT(AUX778076_SEQUENCE_NAME,_impl)<
+ AUX778076_SEQUENCE_ARGS()
+ >::type
+{
+ typedef typename aux::BOOST_PP_CAT(AUX778076_SEQUENCE_NAME,_impl)<
+ AUX778076_SEQUENCE_ARGS()
+ >::type type;
+};
+
+#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+# undef AUX778076_SEQUENCE_N_PARTIAL_SPEC_ARGS
+# undef AUX778076_SEQUENCE_N_ARGS
+# undef AUX778076_SEQUENCE_CONVERT_CN_TO
+# undef AUX778076_SEQUENCE_N_PARAMS
+# undef AUX778076_SEQUENCE_DEFAULT_PARAMS
+# undef AUX778076_SEQUENCE_ARGS
+# undef AUX778076_SEQUENCE_PARAMS
+# undef AUX778076_SEQUENCE_NAME_N
+# undef AUX778076_SEQUENCE_DEFAULT
+# undef AUX778076_SEQUENCE_TEMPLATE_PARAM
+# undef AUX778076_SEQUENCE_PARAM_NAME
+# undef AUX778076_SEQUENCE_LIMIT
+# undef AUX778076_SEQUENCE_BASE_NAME
+# undef AUX778076_SEQUENCE_NAME
+# undef AUX778076_SEQUENCE_INTEGRAL_WRAPPER
+
+}}
+
+///// iteration
+
+#else
+#define i_ BOOST_PP_FRAME_ITERATION(1)
+
+# if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+
+#if i_ == AUX778076_SEQUENCE_LIMIT
+
+/// primary template (not a specialization!)
+template<
+ AUX778076_SEQUENCE_N_PARAMS(i_)
+ >
+struct AUX778076_SEQUENCE_NAME
+ : AUX778076_SEQUENCE_NAME_N(i_)< AUX778076_SEQUENCE_N_ARGS(i_) >
+{
+ typedef typename AUX778076_SEQUENCE_NAME_N(i_)< AUX778076_SEQUENCE_N_ARGS(i_) >::type type;
+};
+
+#else
+
+template<
+ AUX778076_SEQUENCE_N_PARAMS(i_)
+ >
+struct AUX778076_SEQUENCE_NAME< AUX778076_SEQUENCE_N_PARTIAL_SPEC_ARGS(i_) >
+ : AUX778076_SEQUENCE_NAME_N(i_)< AUX778076_SEQUENCE_N_ARGS(i_) >
+{
+#if i_ > 0 || defined(AUX778076_SEQUENCE_INTEGRAL_WRAPPER)
+ typedef typename AUX778076_SEQUENCE_NAME_N(i_)< AUX778076_SEQUENCE_N_ARGS(i_) >::type type;
+#else
+ typedef AUX778076_SEQUENCE_NAME_N(i_)< AUX778076_SEQUENCE_N_ARGS(i_) >::type type;
+#endif
+};
+
+#endif // i_ == AUX778076_SEQUENCE_LIMIT
+
+# else
+
+namespace aux {
+
+template<>
+struct BOOST_PP_CAT(AUX778076_SEQUENCE_NAME,_chooser)<i_>
+{
+ template<
+ AUX778076_SEQUENCE_PARAMS()
+ >
+ struct result_
+ {
+#if i_ > 0 || defined(AUX778076_SEQUENCE_INTEGRAL_WRAPPER)
+ typedef typename AUX778076_SEQUENCE_NAME_N(i_)<
+ AUX778076_SEQUENCE_N_ARGS(i_)
+ >::type type;
+#else
+ typedef AUX778076_SEQUENCE_NAME_N(i_)<
+ AUX778076_SEQUENCE_N_ARGS(i_)
+ >::type type;
+#endif
+ };
+};
+
+} // namespace aux
+
+# endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+#undef i_
+#endif // BOOST_PP_IS_ITERATING