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/function_types/detail/encoding/undef.hpp b/ndnboost/function_types/detail/encoding/undef.hpp
new file mode 100644
index 0000000..1920d6f
--- /dev/null
+++ b/ndnboost/function_types/detail/encoding/undef.hpp
@@ -0,0 +1,38 @@
+
+// (C) Copyright Tobias Schwinger
+//
+// Use modification and distribution are subject to the boost Software License,
+// Version 1.0. (See http://www.boost.org/LICENSE_1_0.txt).
+
+//------------------------------------------------------------------------------
+
+// no include guards, this file is intended for multiple inclusion
+
+#undef BOOST_FT_type_mask
+#undef BOOST_FT_kind_mask
+#undef BOOST_FT_callable_builtin
+#undef BOOST_FT_non_member
+#undef BOOST_FT_function
+#undef BOOST_FT_pointer
+#undef BOOST_FT_reference
+#undef BOOST_FT_non_member_callable_builtin
+#undef BOOST_FT_member_pointer
+#undef BOOST_FT_member_function_pointer
+#undef BOOST_FT_member_object_pointer
+#undef BOOST_FT_member_object_pointer_flags
+
+#undef BOOST_FT_variadic
+#undef BOOST_FT_non_variadic
+#undef BOOST_FT_variadic_mask
+
+#undef BOOST_FT_const
+#undef BOOST_FT_volatile
+
+#undef BOOST_FT_default_cc
+#undef BOOST_FT_cc_mask
+
+#undef BOOST_FT_flags_mask
+#undef BOOST_FT_full_mask
+
+#undef BOOST_FT_arity_mask
+