If no HAVE_STD_SHARED_PTR or HAVE_BOOST_SHARED_PTR then set ptr_lib to ndnboost in the boost headers in this distribution.
diff --git a/boost/type_traits/is_convertible.hpp b/boost/type_traits/is_convertible.hpp
new file mode 100644
index 0000000..d42a259
--- /dev/null
+++ b/boost/type_traits/is_convertible.hpp
@@ -0,0 +1,492 @@
+
+// Copyright 2000 John Maddock (john@johnmaddock.co.uk)
+// Copyright 2000 Jeremy Siek (jsiek@lsc.nd.edu)
+// Copyright 1999, 2000 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi)
+//
+// 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_IS_CONVERTIBLE_HPP_INCLUDED
+#define BOOST_TT_IS_CONVERTIBLE_HPP_INCLUDED
+
+#include <boost/type_traits/intrinsics.hpp>
+#ifndef BOOST_IS_CONVERTIBLE
+#include <boost/type_traits/detail/yes_no_type.hpp>
+#include <boost/type_traits/config.hpp>
+#include <boost/type_traits/is_array.hpp>
+#include <boost/type_traits/ice.hpp>
+#include <boost/type_traits/is_arithmetic.hpp>
+#include <boost/type_traits/is_void.hpp>
+#ifndef BOOST_NO_IS_ABSTRACT
+#include <boost/type_traits/is_abstract.hpp>
+#endif
+#include <boost/type_traits/add_lvalue_reference.hpp>
+#include <boost/type_traits/add_rvalue_reference.hpp>
+#include <boost/type_traits/is_function.hpp>
+
+#if defined(__MWERKS__)
+#include <boost/type_traits/remove_reference.hpp>
+#endif
+
+#endif // BOOST_IS_CONVERTIBLE
+
+// should be always the last #include directive
+#include <boost/type_traits/detail/bool_trait_def.hpp>
+
+namespace ndnboost {
+
+#ifndef BOOST_IS_CONVERTIBLE
+
+// is one type convertible to another?
+//
+// there are multiple versions of the is_convertible
+// template, almost every compiler seems to require its
+// own version.
+//
+// Thanks to Andrei Alexandrescu for the original version of the
+// conversion detection technique!
+//
+
+namespace detail {
+
+// MS specific version:
+
+#if defined(BOOST_MSVC) && (BOOST_MSVC <= 1300)
+
+// This workaround is necessary to handle when From is void
+// which is normally taken care of by the partial specialization
+// of the is_convertible typename.
+using ::ndnboost::type_traits::yes_type;
+using ::ndnboost::type_traits::no_type;
+
+template< typename From >
+struct does_conversion_exist
+{
+ template< typename To > struct result_
+ {
+ static no_type BOOST_TT_DECL _m_check(...);
+ static yes_type BOOST_TT_DECL _m_check(To);
+ static typename add_lvalue_reference<From>::type _m_from;
+ enum { value = sizeof( _m_check(_m_from) ) == sizeof(yes_type) };
+ };
+};
+
+template<>
+struct does_conversion_exist<void>
+{
+ template< typename To > struct result_
+ {
+ enum { value = ::ndnboost::is_void<To>::value };
+ };
+};
+
+template <typename From, typename To>
+struct is_convertible_basic_impl
+ : public does_conversion_exist<From>::template result_<To>
+{
+};
+
+#elif defined(__BORLANDC__) && (__BORLANDC__ < 0x560)
+//
+// special version for Borland compilers
+// this version breaks when used for some
+// UDT conversions:
+//
+template <typename From, typename To>
+struct is_convertible_impl
+{
+#pragma option push -w-8074
+ // This workaround for Borland breaks the EDG C++ frontend,
+ // so we only use it for Borland.
+ template <typename T> struct checker
+ {
+ static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(...);
+ static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(T);
+ };
+
+ static typename add_lvalue_reference<From>::type _m_from;
+ static bool const value = sizeof( checker<To>::_m_check(_m_from) )
+ == sizeof(::ndnboost::type_traits::yes_type);
+#pragma option pop
+};
+
+#elif defined(__GNUC__) || defined(__BORLANDC__) && (__BORLANDC__ < 0x600)
+// special version for gcc compiler + recent Borland versions
+// note that this does not pass UDT's through (...)
+
+struct any_conversion
+{
+ template <typename T> any_conversion(const volatile T&);
+ template <typename T> any_conversion(const T&);
+ template <typename T> any_conversion(volatile T&);
+ template <typename T> any_conversion(T&);
+};
+
+template <typename T> struct checker
+{
+ static ndnboost::type_traits::no_type _m_check(any_conversion ...);
+ static ndnboost::type_traits::yes_type _m_check(T, int);
+};
+
+template <typename From, typename To>
+struct is_convertible_basic_impl
+{
+ typedef typename add_lvalue_reference<From>::type lvalue_type;
+ typedef typename add_rvalue_reference<From>::type rvalue_type;
+ static lvalue_type _m_from;
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 6)))
+ static bool const value =
+ sizeof( ndnboost::detail::checker<To>::_m_check(static_cast<rvalue_type>(_m_from), 0) )
+ == sizeof(::ndnboost::type_traits::yes_type);
+#else
+ static bool const value =
+ sizeof( ndnboost::detail::checker<To>::_m_check(_m_from, 0) )
+ == sizeof(::ndnboost::type_traits::yes_type);
+#endif
+};
+
+#elif (defined(__EDG_VERSION__) && (__EDG_VERSION__ >= 245) && !defined(__ICL)) \
+ || defined(__IBMCPP__) || defined(__HP_aCC)
+//
+// This is *almost* an ideal world implementation as it doesn't rely
+// on undefined behaviour by passing UDT's through (...).
+// Unfortunately it doesn't quite pass all the tests for most compilers (sigh...)
+// Enable this for your compiler if is_convertible_test.cpp will compile it...
+//
+// Note we do not enable this for VC7.1, because even though it passes all the
+// type_traits tests it is known to cause problems when instantiation occurs
+// deep within the instantiation tree :-(
+//
+struct any_conversion
+{
+ template <typename T> any_conversion(const volatile T&);
+ template <typename T> any_conversion(const T&);
+ template <typename T> any_conversion(volatile T&);
+ // we need this constructor to catch references to functions
+ // (which can not be cv-qualified):
+ template <typename T> any_conversion(T&);
+};
+
+template <typename From, typename To>
+struct is_convertible_basic_impl
+{
+ static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(any_conversion ...);
+ static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(To, int);
+ typedef typename add_lvalue_reference<From>::type lvalue_type;
+ typedef typename add_rvalue_reference<From>::type rvalue_type;
+ static lvalue_type _m_from;
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+ BOOST_STATIC_CONSTANT(bool, value =
+ sizeof( _m_check(static_cast<rvalue_type>(_m_from), 0) ) == sizeof(::ndnboost::type_traits::yes_type)
+ );
+#else
+ BOOST_STATIC_CONSTANT(bool, value =
+ sizeof( _m_check(_m_from, 0) ) == sizeof(::ndnboost::type_traits::yes_type)
+ );
+#endif
+};
+
+#elif defined(__DMC__)
+
+struct any_conversion
+{
+ template <typename T> any_conversion(const volatile T&);
+ template <typename T> any_conversion(const T&);
+ template <typename T> any_conversion(volatile T&);
+ // we need this constructor to catch references to functions
+ // (which can not be cv-qualified):
+ template <typename T> any_conversion(T&);
+};
+
+template <typename From, typename To>
+struct is_convertible_basic_impl
+{
+ // Using '...' doesn't always work on Digital Mars. This version seems to.
+ template <class T>
+ static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(any_conversion, float, T);
+ static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(To, int, int);
+ typedef typename add_lvalue_reference<From>::type lvalue_type;
+ typedef typename add_rvalue_reference<From>::type rvalue_type;
+ static lvalue_type _m_from;
+
+ // Static constants sometime cause the conversion of _m_from to To to be
+ // called. This doesn't happen with an enum.
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+ enum { value =
+ sizeof( _m_check(static_cast<rvalue_type>(_m_from), 0, 0) ) == sizeof(::ndnboost::type_traits::yes_type)
+ };
+#else
+ enum { value =
+ sizeof( _m_check(_m_from, 0, 0) ) == sizeof(::ndnboost::type_traits::yes_type)
+ };
+#endif
+};
+
+#elif defined(__MWERKS__)
+//
+// CW works with the technique implemented above for EDG, except when From
+// is a function type (or a reference to such a type), in which case
+// any_conversion won't be accepted as a valid conversion. We detect this
+// exceptional situation and channel it through an alternative algorithm.
+//
+
+template <typename From, typename To,bool FromIsFunctionRef>
+struct is_convertible_basic_impl_aux;
+
+struct any_conversion
+{
+ template <typename T> any_conversion(const volatile T&);
+ template <typename T> any_conversion(const T&);
+ template <typename T> any_conversion(volatile T&);
+ template <typename T> any_conversion(T&);
+};
+
+template <typename From, typename To>
+struct is_convertible_basic_impl_aux<From,To,false /*FromIsFunctionRef*/>
+{
+ static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(any_conversion ...);
+ static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(To, int);
+ typedef typename add_lvalue_reference<From>::type lvalue_type;
+ typedef typename add_rvalue_reference<From>::type rvalue_type;
+ static lvalue_type _m_from;
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+ BOOST_STATIC_CONSTANT(bool, value =
+ sizeof( _m_check(static_cast<rvalue_type>(_m_from), 0) ) == sizeof(::ndnboost::type_traits::yes_type)
+ );
+#else
+ BOOST_STATIC_CONSTANT(bool, value =
+ sizeof( _m_check(_m_from, 0) ) == sizeof(::ndnboost::type_traits::yes_type)
+ );
+#endif
+};
+
+template <typename From, typename To>
+struct is_convertible_basic_impl_aux<From,To,true /*FromIsFunctionRef*/>
+{
+ static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(...);
+ static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(To);
+ typedef typename add_lvalue_reference<From>::type lvalue_type;
+ typedef typename add_rvalue_reference<From>::type rvalue_type;
+ static lvalue_type _m_from;
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+ BOOST_STATIC_CONSTANT(bool, value =
+ sizeof( _m_check(static_cast<rvalue_type>(_m_from)) ) == sizeof(::ndnboost::type_traits::yes_type)
+ );
+#else
+ BOOST_STATIC_CONSTANT(bool, value =
+ sizeof( _m_check(_m_from) ) == sizeof(::ndnboost::type_traits::yes_type)
+ );
+#endif
+};
+
+template <typename From, typename To>
+struct is_convertible_basic_impl:
+ is_convertible_basic_impl_aux<
+ From,To,
+ ::ndnboost::is_function<typename ::ndnboost::remove_reference<From>::type>::value
+ >
+{};
+
+#else
+//
+// This version seems to work pretty well for a wide spectrum of compilers,
+// however it does rely on undefined behaviour by passing UDT's through (...).
+//
+template <typename From, typename To>
+struct is_convertible_basic_impl
+{
+ static ::ndnboost::type_traits::no_type BOOST_TT_DECL _m_check(...);
+ static ::ndnboost::type_traits::yes_type BOOST_TT_DECL _m_check(To);
+ typedef typename add_lvalue_reference<From>::type lvalue_type;
+ typedef typename add_rvalue_reference<From>::type rvalue_type;
+ static lvalue_type _m_from;
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable:4244)
+#if BOOST_WORKAROUND(BOOST_MSVC_FULL_VER, >= 140050000)
+#pragma warning(disable:6334)
+#endif
+#endif
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+ BOOST_STATIC_CONSTANT(bool, value =
+ sizeof( _m_check(static_cast<rvalue_type>(_m_from)) ) == sizeof(::ndnboost::type_traits::yes_type)
+ );
+#else
+ BOOST_STATIC_CONSTANT(bool, value =
+ sizeof( _m_check(_m_from) ) == sizeof(::ndnboost::type_traits::yes_type)
+ );
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+};
+
+#endif // is_convertible_impl
+
+#if defined(__DMC__)
+// As before, a static constant sometimes causes errors on Digital Mars.
+template <typename From, typename To>
+struct is_convertible_impl
+{
+ enum { value =
+ (::ndnboost::type_traits::ice_and<
+ ::ndnboost::type_traits::ice_or<
+ ::ndnboost::detail::is_convertible_basic_impl<From,To>::value,
+ ::ndnboost::is_void<To>::value
+ >::value,
+ ::ndnboost::type_traits::ice_not<
+ ::ndnboost::is_array<To>::value
+ >::value,
+ ::ndnboost::type_traits::ice_not<
+ ::ndnboost::is_function<To>::value
+ >::value
+ >::value) };
+};
+#elif !defined(__BORLANDC__) || __BORLANDC__ > 0x551
+template <typename From, typename To>
+struct is_convertible_impl
+{
+ BOOST_STATIC_CONSTANT(bool, value =
+ (::ndnboost::type_traits::ice_and<
+ ::ndnboost::type_traits::ice_or<
+ ::ndnboost::detail::is_convertible_basic_impl<From,To>::value,
+ ::ndnboost::is_void<To>::value
+ >::value,
+ ::ndnboost::type_traits::ice_not<
+ ::ndnboost::is_array<To>::value
+ >::value,
+ ::ndnboost::type_traits::ice_not<
+ ::ndnboost::is_function<To>::value
+ >::value
+ >::value)
+ );
+};
+#endif
+
+template <bool trivial1, bool trivial2, bool abstract_target>
+struct is_convertible_impl_select
+{
+ template <class From, class To>
+ struct rebind
+ {
+ typedef is_convertible_impl<From, To> type;
+ };
+};
+
+template <>
+struct is_convertible_impl_select<true, true, false>
+{
+ template <class From, class To>
+ struct rebind
+ {
+ typedef true_type type;
+ };
+};
+
+template <>
+struct is_convertible_impl_select<false, false, true>
+{
+ template <class From, class To>
+ struct rebind
+ {
+ typedef false_type type;
+ };
+};
+
+template <>
+struct is_convertible_impl_select<true, false, true>
+{
+ template <class From, class To>
+ struct rebind
+ {
+ typedef false_type type;
+ };
+};
+
+template <typename From, typename To>
+struct is_convertible_impl_dispatch_base
+{
+#if !BOOST_WORKAROUND(__HP_aCC, < 60700)
+ typedef is_convertible_impl_select<
+ ::ndnboost::is_arithmetic<From>::value,
+ ::ndnboost::is_arithmetic<To>::value,
+#ifndef BOOST_NO_IS_ABSTRACT
+ ::ndnboost::is_abstract<To>::value
+#else
+ false
+#endif
+ > selector;
+#else
+ typedef is_convertible_impl_select<false, false, false> selector;
+#endif
+ typedef typename selector::template rebind<From, To> isc_binder;
+ typedef typename isc_binder::type type;
+};
+
+template <typename From, typename To>
+struct is_convertible_impl_dispatch
+ : public is_convertible_impl_dispatch_base<From, To>::type
+{};
+
+//
+// Now add the full and partial specialisations
+// for void types, these are common to all the
+// implementation above:
+//
+#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
+# define TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1(trait,spec1,spec2,value) \
+ BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(trait,spec1,spec2,value) \
+ BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(trait,spec1,spec2 const,value) \
+ BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(trait,spec1,spec2 volatile,value) \
+ BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(trait,spec1,spec2 const volatile,value) \
+ /**/
+
+# define TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2(trait,spec1,spec2,value) \
+ TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1(trait,spec1,spec2,value) \
+ TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1(trait,spec1 const,spec2,value) \
+ TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1(trait,spec1 volatile,spec2,value) \
+ TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1(trait,spec1 const volatile,spec2,value) \
+ /**/
+
+ TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2(is_convertible,void,void,true)
+
+# undef TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2
+# undef TT_AUX_BOOL_CV_VOID_TRAIT_SPEC2_PART1
+
+#else
+ BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(is_convertible,void,void,true)
+#endif // BOOST_NO_CV_VOID_SPECIALIZATIONS
+
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename To,is_convertible,void,To,false)
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename From,is_convertible,From,void,false)
+#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename To,is_convertible,void const,To,false)
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename To,is_convertible,void volatile,To,false)
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename To,is_convertible,void const volatile,To,false)
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename From,is_convertible,From,void const,false)
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename From,is_convertible,From,void volatile,false)
+BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(typename From,is_convertible,From,void const volatile,false)
+#endif
+#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+} // namespace detail
+
+BOOST_TT_AUX_BOOL_TRAIT_DEF2(is_convertible,From,To,(::ndnboost::detail::is_convertible_impl_dispatch<From,To>::value))
+
+#else
+
+BOOST_TT_AUX_BOOL_TRAIT_DEF2(is_convertible,From,To,BOOST_IS_CONVERTIBLE(From,To))
+
+#endif
+
+} // namespace ndnboost
+
+#include <boost/type_traits/detail/bool_trait_undef.hpp>
+
+#endif // BOOST_TT_IS_CONVERTIBLE_HPP_INCLUDED