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/config/compiler/clang.hpp b/boost/config/compiler/clang.hpp
new file mode 100644
index 0000000..18d6e54
--- /dev/null
+++ b/boost/config/compiler/clang.hpp
@@ -0,0 +1,144 @@
+// (C) Copyright Douglas Gregor 2010
+//
+// 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 for most recent version.
+
+// Clang compiler setup.
+
+#if !__has_feature(cxx_exceptions) && !defined(BOOST_NO_EXCEPTIONS)
+# define BOOST_NO_EXCEPTIONS
+#endif
+
+#if !__has_feature(cxx_rtti) && !defined(BOOST_NO_RTTI)
+# define BOOST_NO_RTTI
+#endif
+
+#if !__has_feature(cxx_rtti) && !defined(BOOST_NO_TYPEID)
+# define BOOST_NO_TYPEID
+#endif
+
+#if defined(__int64)
+# define BOOST_HAS_MS_INT64
+#endif
+
+#define BOOST_HAS_NRVO
+
+// Clang supports "long long" in all compilation modes.
+#define BOOST_HAS_LONG_LONG
+
+//
+// Dynamic shared object (DSO) and dynamic-link library (DLL) support
+//
+#if !defined(_WIN32) && !defined(__WIN32__) && !defined(WIN32)
+# define BOOST_SYMBOL_EXPORT __attribute__((__visibility__("default")))
+# define BOOST_SYMBOL_IMPORT
+# define BOOST_SYMBOL_VISIBLE __attribute__((__visibility__("default")))
+#endif
+
+#if !__has_feature(cxx_auto_type)
+# define BOOST_NO_CXX11_AUTO_DECLARATIONS
+# define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#endif
+
+#if !(defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L)
+# define BOOST_NO_CXX11_CHAR16_T
+# define BOOST_NO_CXX11_CHAR32_T
+#endif
+
+#if !__has_feature(cxx_constexpr)
+# define BOOST_NO_CXX11_CONSTEXPR
+#endif
+
+#if !__has_feature(cxx_decltype)
+# define BOOST_NO_CXX11_DECLTYPE
+#endif
+
+#if !__has_feature(cxx_decltype_incomplete_return_types)
+# define BOOST_NO_CXX11_DECLTYPE_N3276
+#endif
+
+#if !__has_feature(cxx_defaulted_functions)
+# define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#endif
+
+#if !__has_feature(cxx_deleted_functions)
+# define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#endif
+
+#if !__has_feature(cxx_explicit_conversions)
+# define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#endif
+
+#if !__has_feature(cxx_default_function_template_args)
+# define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#endif
+
+#if !__has_feature(cxx_generalized_initializers)
+# define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#endif
+
+#if !__has_feature(cxx_lambdas)
+# define BOOST_NO_CXX11_LAMBDAS
+#endif
+
+#if !__has_feature(cxx_local_type_template_args)
+# define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#endif
+
+#if !__has_feature(cxx_noexcept)
+# define BOOST_NO_CXX11_NOEXCEPT
+#endif
+
+#if !__has_feature(cxx_nullptr)
+# define BOOST_NO_CXX11_NULLPTR
+#endif
+
+#if !__has_feature(cxx_range_for)
+# define BOOST_NO_CXX11_RANGE_BASED_FOR
+#endif
+
+#if !__has_feature(cxx_raw_string_literals)
+# define BOOST_NO_CXX11_RAW_LITERALS
+#endif
+
+#if !__has_feature(cxx_generalized_initializers)
+# define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#endif
+
+#if !__has_feature(cxx_rvalue_references)
+# define BOOST_NO_CXX11_RVALUE_REFERENCES
+#endif
+
+#if !__has_feature(cxx_strong_enums)
+# define BOOST_NO_CXX11_SCOPED_ENUMS
+#endif
+
+#if !__has_feature(cxx_static_assert)
+# define BOOST_NO_CXX11_STATIC_ASSERT
+#endif
+
+#if !__has_feature(cxx_alias_templates)
+# define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#endif
+
+#if !__has_feature(cxx_unicode_literals)
+# define BOOST_NO_CXX11_UNICODE_LITERALS
+#endif
+
+#if !__has_feature(cxx_variadic_templates)
+# define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#endif
+
+// Clang always supports variadic macros
+// Clang always supports extern templates
+
+#ifndef BOOST_COMPILER
+# define BOOST_COMPILER "Clang version " __clang_version__
+#endif
+
+// Macro used to identify the Clang compiler.
+#define BOOST_CLANG 1
+