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_/preprocessed/gcc/apply.hpp b/ndnboost/mpl/aux_/preprocessed/gcc/apply.hpp
new file mode 100644
index 0000000..e4b1cd2
--- /dev/null
+++ b/ndnboost/mpl/aux_/preprocessed/gcc/apply.hpp
@@ -0,0 +1,169 @@
+
+// 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)
+//
+
+// Preprocessed version of "ndnboost/mpl/apply.hpp" header
+// -- DO NOT modify by hand!
+
+namespace ndnboost { namespace mpl {
+
+template<
+ typename F
+ >
+struct apply0
+
+ : apply_wrap0<
+ typename lambda<F>::type
+
+ >
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(
+ 1
+ , apply0
+ , (F )
+ )
+};
+
+template<
+ typename F
+ >
+struct apply< F,na,na,na,na,na >
+ : apply0<F>
+{
+};
+
+template<
+ typename F, typename T1
+ >
+struct apply1
+
+ : apply_wrap1<
+ typename lambda<F>::type
+ , T1
+ >
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(
+ 2
+ , apply1
+ , (F, T1)
+ )
+};
+
+template<
+ typename F, typename T1
+ >
+struct apply< F,T1,na,na,na,na >
+ : apply1< F,T1 >
+{
+};
+
+template<
+ typename F, typename T1, typename T2
+ >
+struct apply2
+
+ : apply_wrap2<
+ typename lambda<F>::type
+ , T1, T2
+ >
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(
+ 3
+ , apply2
+ , (F, T1, T2)
+ )
+};
+
+template<
+ typename F, typename T1, typename T2
+ >
+struct apply< F,T1,T2,na,na,na >
+ : apply2< F,T1,T2 >
+{
+};
+
+template<
+ typename F, typename T1, typename T2, typename T3
+ >
+struct apply3
+
+ : apply_wrap3<
+ typename lambda<F>::type
+ , T1, T2, T3
+ >
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(
+ 4
+ , apply3
+ , (F, T1, T2, T3)
+ )
+};
+
+template<
+ typename F, typename T1, typename T2, typename T3
+ >
+struct apply< F,T1,T2,T3,na,na >
+ : apply3< F,T1,T2,T3 >
+{
+};
+
+template<
+ typename F, typename T1, typename T2, typename T3, typename T4
+ >
+struct apply4
+
+ : apply_wrap4<
+ typename lambda<F>::type
+ , T1, T2, T3, T4
+ >
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(
+ 5
+ , apply4
+ , (F, T1, T2, T3, T4)
+ )
+};
+
+template<
+ typename F, typename T1, typename T2, typename T3, typename T4
+ >
+struct apply< F,T1,T2,T3,T4,na >
+ : apply4< F,T1,T2,T3,T4 >
+{
+};
+
+template<
+ typename F, typename T1, typename T2, typename T3, typename T4
+ , typename T5
+ >
+struct apply5
+
+ : apply_wrap5<
+ typename lambda<F>::type
+ , T1, T2, T3, T4, T5
+ >
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(
+ 6
+ , apply5
+ , (F, T1, T2, T3, T4, T5)
+ )
+};
+
+/// primary template (not a specialization!)
+
+template<
+ typename F, typename T1, typename T2, typename T3, typename T4
+ , typename T5
+ >
+struct apply
+ : apply5< F,T1,T2,T3,T4,T5 >
+{
+};
+
+}}
+