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/function_fwd.hpp b/ndnboost/function/function_fwd.hpp
new file mode 100644
index 0000000..11df6eb
--- /dev/null
+++ b/ndnboost/function/function_fwd.hpp
@@ -0,0 +1,70 @@
+// Boost.Function library
+// Copyright (C) Douglas Gregor 2008
+//
+// 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
+#ifndef BOOST_FUNCTION_FWD_HPP
+#define BOOST_FUNCTION_FWD_HPP
+#include <ndnboost/config.hpp>
+
+#if defined(__sgi) && defined(_COMPILER_VERSION) && _COMPILER_VERSION <= 730 && !defined(BOOST_STRICT_CONFIG)
+// Work around a compiler bug.
+// ndnboost::python::objects::function has to be seen by the compiler before the
+// ndnboost::function class template.
+namespace ndnboost { namespace python { namespace objects {
+ class function;
+}}}
+#endif
+
+#if defined (BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \
+ || defined(BOOST_BCB_PARTIAL_SPECIALIZATION_BUG) \
+ || !(defined(BOOST_STRICT_CONFIG) || !defined(__SUNPRO_CC) || __SUNPRO_CC > 0x540)
+# define BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX
+#endif
+
+namespace ndnboost {
+ class bad_function_call;
+
+#if !defined(BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX)
+ // Preferred syntax
+ template<typename Signature> class function;
+
+ template<typename Signature>
+ inline void swap(function<Signature>& f1, function<Signature>& f2)
+ {
+ f1.swap(f2);
+ }
+#endif // have partial specialization
+
+ // Portable syntax
+ template<typename R> class function0;
+ template<typename R, typename T1> class function1;
+ template<typename R, typename T1, typename T2> class function2;
+ template<typename R, typename T1, typename T2, typename T3> class function3;
+ template<typename R, typename T1, typename T2, typename T3, typename T4>
+ class function4;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5>
+ class function5;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5, typename T6>
+ class function6;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5, typename T6, typename T7>
+ class function7;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5, typename T6, typename T7, typename T8>
+ class function8;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5, typename T6, typename T7, typename T8, typename T9>
+ class function9;
+ template<typename R, typename T1, typename T2, typename T3, typename T4,
+ typename T5, typename T6, typename T7, typename T8, typename T9,
+ typename T10>
+ class function10;
+}
+
+#endif