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/type_traits/has_plus_assign.hpp b/ndnboost/type_traits/has_plus_assign.hpp
new file mode 100644
index 0000000..d97d477
--- /dev/null
+++ b/ndnboost/type_traits/has_plus_assign.hpp
@@ -0,0 +1,66 @@
+// (C) Copyright 2009-2011 Frederic Bron.
+//
+// Use, modification and distribution are subject to 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/type_traits for most recent version including documentation.
+
+#ifndef BOOST_TT_HAS_PLUS_ASSIGN_HPP_INCLUDED
+#define BOOST_TT_HAS_PLUS_ASSIGN_HPP_INCLUDED
+
+#define BOOST_TT_TRAIT_NAME has_plus_assign
+#define BOOST_TT_TRAIT_OP +=
+#define BOOST_TT_FORBIDDEN_IF\
+ ::ndnboost::type_traits::ice_or<\
+ /* Lhs==pointer and Rhs==pointer */\
+ ::ndnboost::type_traits::ice_and<\
+ ::ndnboost::is_pointer< Lhs_noref >::value,\
+ ::ndnboost::is_pointer< Rhs_noref >::value\
+ >::value,\
+ /* Lhs==void* and Rhs==fundamental */\
+ ::ndnboost::type_traits::ice_and<\
+ ::ndnboost::is_pointer< Lhs_noref >::value,\
+ ::ndnboost::is_void< Lhs_noptr >::value,\
+ ::ndnboost::is_fundamental< Rhs_nocv >::value\
+ >::value,\
+ /* Rhs==void* and Lhs==fundamental */\
+ ::ndnboost::type_traits::ice_and<\
+ ::ndnboost::is_pointer< Rhs_noref >::value,\
+ ::ndnboost::is_void< Rhs_noptr >::value,\
+ ::ndnboost::is_fundamental< Lhs_nocv >::value\
+ >::value,\
+ /* Lhs==pointer and Rhs==fundamental and Rhs!=integral */\
+ ::ndnboost::type_traits::ice_and<\
+ ::ndnboost::is_pointer< Lhs_noref >::value,\
+ ::ndnboost::is_fundamental< Rhs_nocv >::value,\
+ ::ndnboost::type_traits::ice_not< ::ndnboost::is_integral< Rhs_noref >::value >::value\
+ >::value,\
+ /* Rhs==pointer and Lhs==fundamental and Lhs!=bool */\
+ ::ndnboost::type_traits::ice_and<\
+ ::ndnboost::is_pointer< Rhs_noref >::value,\
+ ::ndnboost::is_fundamental< Lhs_nocv >::value,\
+ ::ndnboost::type_traits::ice_not< ::ndnboost::is_same< Lhs_nocv, bool >::value >::value\
+ >::value,\
+ /* (Lhs==fundamental or Lhs==pointer) and (Rhs==fundamental or Rhs==pointer) and (Lhs==const) */\
+ ::ndnboost::type_traits::ice_and<\
+ ::ndnboost::type_traits::ice_or<\
+ ::ndnboost::is_fundamental< Lhs_nocv >::value,\
+ ::ndnboost::is_pointer< Lhs_noref >::value\
+ >::value,\
+ ::ndnboost::type_traits::ice_or<\
+ ::ndnboost::is_fundamental< Rhs_nocv >::value,\
+ ::ndnboost::is_pointer< Rhs_noref >::value\
+ >::value,\
+ ::ndnboost::is_const< Lhs_noref >::value\
+ >::value\
+ >::value
+
+
+#include <ndnboost/type_traits/detail/has_binary_operator.hpp>
+
+#undef BOOST_TT_TRAIT_NAME
+#undef BOOST_TT_TRAIT_OP
+#undef BOOST_TT_FORBIDDEN_IF
+
+#endif