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.hpp b/ndnboost/function.hpp
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+++ b/ndnboost/function.hpp
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+// Boost.Function library
+
+// Copyright Douglas Gregor 2001-2003. Use, modification and
+// distribution is 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)
+
+// For more information, see http://www.boost.org/libs/function
+
+// William Kempf, Jesse Jones and Karl Nelson were all very helpful in the
+// design of this library.
+
+#include <functional> // unary_function, binary_function
+
+#include <ndnboost/preprocessor/iterate.hpp>
+#include <ndnboost/detail/workaround.hpp>
+
+#ifndef BOOST_FUNCTION_MAX_ARGS
+# define BOOST_FUNCTION_MAX_ARGS 10
+#endif // BOOST_FUNCTION_MAX_ARGS
+
+// Include the prologue here so that the use of file-level iteration
+// in anything that may be included by function_template.hpp doesn't break
+#include <ndnboost/function/detail/prologue.hpp>
+
+// Older Visual Age C++ version do not handle the file iteration well
+#if BOOST_WORKAROUND(__IBMCPP__, >= 500) && BOOST_WORKAROUND(__IBMCPP__, < 800)
+# if BOOST_FUNCTION_MAX_ARGS >= 0
+# include <ndnboost/function/function0.hpp>
+# endif
+# if BOOST_FUNCTION_MAX_ARGS >= 1
+# include <ndnboost/function/function1.hpp>
+# endif
+# if BOOST_FUNCTION_MAX_ARGS >= 2
+# include <ndnboost/function/function2.hpp>
+# endif
+# if BOOST_FUNCTION_MAX_ARGS >= 3
+# include <ndnboost/function/function3.hpp>
+# endif
+# if BOOST_FUNCTION_MAX_ARGS >= 4
+# include <ndnboost/function/function4.hpp>
+# endif
+# if BOOST_FUNCTION_MAX_ARGS >= 5
+# include <ndnboost/function/function5.hpp>
+# endif
+# if BOOST_FUNCTION_MAX_ARGS >= 6
+# include <ndnboost/function/function6.hpp>
+# endif
+# if BOOST_FUNCTION_MAX_ARGS >= 7
+# include <ndnboost/function/function7.hpp>
+# endif
+# if BOOST_FUNCTION_MAX_ARGS >= 8
+# include <ndnboost/function/function8.hpp>
+# endif
+# if BOOST_FUNCTION_MAX_ARGS >= 9
+# include <ndnboost/function/function9.hpp>
+# endif
+# if BOOST_FUNCTION_MAX_ARGS >= 10
+# include <ndnboost/function/function10.hpp>
+# endif
+#else
+// What is the '3' for?
+# define BOOST_PP_ITERATION_PARAMS_1 (3,(0,BOOST_FUNCTION_MAX_ARGS,<ndnboost/function/detail/function_iterate.hpp>))
+# include BOOST_PP_ITERATE()
+# undef BOOST_PP_ITERATION_PARAMS_1
+#endif