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/smart_ptr/detail/operator_bool.hpp b/boost/smart_ptr/detail/operator_bool.hpp
new file mode 100644
index 0000000..8ae1527
--- /dev/null
+++ b/boost/smart_ptr/detail/operator_bool.hpp
@@ -0,0 +1,63 @@
+// This header intentionally has no include guards.
+//
+// Copyright (c) 2001-2009, 2012 Peter Dimov
+//
+// 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
+
+#if !defined( BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS ) && !defined( BOOST_NO_CXX11_NULLPTR )
+
+ explicit operator bool () const BOOST_NOEXCEPT
+ {
+ return px != 0;
+ }
+
+#elif ( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, < 0x570) ) || defined(__CINT__)
+
+ operator bool () const BOOST_NOEXCEPT
+ {
+ return px != 0;
+ }
+
+#elif defined( _MANAGED )
+
+ static void unspecified_bool( this_type*** )
+ {
+ }
+
+ typedef void (*unspecified_bool_type)( this_type*** );
+
+ operator unspecified_bool_type() const BOOST_NOEXCEPT
+ {
+ return px == 0? 0: unspecified_bool;
+ }
+
+#elif \
+ ( defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, < 0x3200) ) || \
+ ( defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ < 304) ) || \
+ ( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x590) )
+
+ typedef element_type * (this_type::*unspecified_bool_type)() const;
+
+ operator unspecified_bool_type() const BOOST_NOEXCEPT
+ {
+ return px == 0? 0: &this_type::get;
+ }
+
+#else
+
+ typedef element_type * this_type::*unspecified_bool_type;
+
+ operator unspecified_bool_type() const BOOST_NOEXCEPT
+ {
+ return px == 0? 0: &this_type::px;
+ }
+
+#endif
+
+ // operator! is redundant, but some compilers need it
+ bool operator! () const BOOST_NOEXCEPT
+ {
+ return px == 0;
+ }