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/mpl/if.hpp b/boost/mpl/if.hpp
new file mode 100644
index 0000000..c533e96
--- /dev/null
+++ b/boost/mpl/if.hpp
@@ -0,0 +1,135 @@
+
+#ifndef BOOST_MPL_IF_HPP_INCLUDED
+#define BOOST_MPL_IF_HPP_INCLUDED
+
+// 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)
+//
+// See http://www.boost.org/libs/mpl for documentation.
+
+// $Id: if.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
+// $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
+// $Revision: 49267 $
+
+#include <boost/mpl/aux_/value_wknd.hpp>
+#include <boost/mpl/aux_/static_cast.hpp>
+#include <boost/mpl/aux_/na_spec.hpp>
+#include <boost/mpl/aux_/lambda_support.hpp>
+#include <boost/mpl/aux_/config/integral.hpp>
+#include <boost/mpl/aux_/config/ctps.hpp>
+#include <boost/mpl/aux_/config/workaround.hpp>
+
+namespace ndnboost { namespace mpl {
+
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+
+template<
+ bool C
+ , typename T1
+ , typename T2
+ >
+struct if_c
+{
+ typedef T1 type;
+};
+
+template<
+ typename T1
+ , typename T2
+ >
+struct if_c<false,T1,T2>
+{
+ typedef T2 type;
+};
+
+// agurt, 05/sep/04: nondescriptive parameter names for the sake of DigitalMars
+// (and possibly MWCW < 8.0); see http://article.gmane.org/gmane.comp.lib.boost.devel/108959
+template<
+ typename BOOST_MPL_AUX_NA_PARAM(T1)
+ , typename BOOST_MPL_AUX_NA_PARAM(T2)
+ , typename BOOST_MPL_AUX_NA_PARAM(T3)
+ >
+struct if_
+{
+ private:
+ // agurt, 02/jan/03: two-step 'type' definition for the sake of aCC
+ typedef if_c<
+#if defined(BOOST_MPL_CFG_BCC_INTEGRAL_CONSTANTS)
+ BOOST_MPL_AUX_VALUE_WKND(T1)::value
+#else
+ BOOST_MPL_AUX_STATIC_CAST(bool, BOOST_MPL_AUX_VALUE_WKND(T1)::value)
+#endif
+ , T2
+ , T3
+ > almost_type_;
+
+ public:
+ typedef typename almost_type_::type type;
+
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(3,if_,(T1,T2,T3))
+};
+
+#else
+
+// no partial class template specialization
+
+namespace aux {
+
+template< bool C >
+struct if_impl
+{
+ template< typename T1, typename T2 > struct result_
+ {
+ typedef T1 type;
+ };
+};
+
+template<>
+struct if_impl<false>
+{
+ template< typename T1, typename T2 > struct result_
+ {
+ typedef T2 type;
+ };
+};
+
+} // namespace aux
+
+template<
+ bool C_
+ , typename T1
+ , typename T2
+ >
+struct if_c
+{
+ typedef typename aux::if_impl< C_ >
+ ::template result_<T1,T2>::type type;
+};
+
+// (almost) copy & paste in order to save one more
+// recursively nested template instantiation to user
+template<
+ typename BOOST_MPL_AUX_NA_PARAM(C_)
+ , typename BOOST_MPL_AUX_NA_PARAM(T1)
+ , typename BOOST_MPL_AUX_NA_PARAM(T2)
+ >
+struct if_
+{
+ enum { msvc_wknd_ = BOOST_MPL_AUX_MSVC_VALUE_WKND(C_)::value };
+
+ typedef typename aux::if_impl< BOOST_MPL_AUX_STATIC_CAST(bool, msvc_wknd_) >
+ ::template result_<T1,T2>::type type;
+
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(3,if_,(C_,T1,T2))
+};
+
+#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+BOOST_MPL_AUX_NA_SPEC(3, if_)
+
+}}
+
+#endif // BOOST_MPL_IF_HPP_INCLUDED