Fix c++11 detection.

Author: garyfurnish

config/cxx.py

@@ -15,7 +15,7 @@ def add_options(vars):
 
 def check(context):
 
-    source = r"""#if __cplusplus < 201103L
+    source = r"""#if __cplusplus < 201103L && (!defined(_MSC_VER) || _MSC_VER < 1800) 
 #error no C++11
 #endif"""
 

include/boost/python/converter/registered.hpp

@@ -76,7 +76,7 @@ namespace detail
       registry::lookup_shared_ptr(type_id<shared_ptr<T> >());
   }
 
-#if __cplusplus >= 201103L
+#if !defined(BOOST_NO_CXX11_SMART_PTR)
   template <class T>
   inline void
   register_shared_ptr0(std::shared_ptr<T>*)

include/boost/python/converter/shared_ptr_to_python.hpp

@@ -25,7 +25,7 @@ PyObject* shared_ptr_to_python(shared_ptr<T> const& x)
         return converter::registered<shared_ptr<T> const&>::converters.to_python(&x);
 }
 
-#if __cplusplus >= 201103L
+#if !defined(BOOST_NO_CXX11_SMART_PTR)
 template <class T>
 PyObject* shared_ptr_to_python(std::shared_ptr<T> const& x)
 {

include/boost/python/detail/is_shared_ptr.hpp

@@ -13,7 +13,7 @@
 namespace boost { namespace python { namespace detail { 
 
 BOOST_PYTHON_IS_XXX_DEF(shared_ptr, shared_ptr, 1)
-#if __cplusplus >= 201103L
+#if !defined(BOOST_NO_CXX11_SMART_PTR)
 template <typename T>
 struct is_shared_ptr<std::shared_ptr<T> > : std::true_type {};
 #endif

include/boost/python/detail/type_traits.hpp

@@ -7,7 +7,8 @@
 # define BOOST_PYTHON_DETAIL_TYPE_TRAITS_HPP
 
 
-#if __cplusplus < 201103L
+#if __cplusplus < 201103L && (!defined(BOOST_MSVC) || BOOST_MSVC<=1600)
+#define BOOST_PYTHON_USE_BOOST_TYPES
 # include <boost/type_traits/transform_traits.hpp>
 # include <boost/type_traits/same_traits.hpp>
 # include <boost/type_traits/cv_traits.hpp>
@@ -34,7 +35,7 @@
 
 namespace boost { namespace python { namespace detail {
 
-#if __cplusplus < 201103L
+#if defined(BOOST_PYTHON_USE_BOOST_TYPES)
     using boost::alignment_of;
     using boost::add_const;
     using boost::add_cv;

include/boost/python/object/class_metadata.hpp

@@ -83,7 +83,7 @@ inline void register_shared_ptr_from_python_and_casts(T*, Bases)
 {
   // Constructor performs registration
   python::detail::force_instantiate(converter::shared_ptr_from_python<T, boost::shared_ptr>());
-#if __cplusplus >= 201103L
+#if !defined(BOOST_NO_CXX11_SMART_PTR)
   python::detail::force_instantiate(converter::shared_ptr_from_python<T, std::shared_ptr>());
 #endif
 

include/boost/python/to_python_indirect.hpp

@@ -83,7 +83,7 @@ namespace detail
           // copy constructor.
 # if defined(__ICL) && __ICL < 600 
           typedef boost::shared_ptr<T> smart_pointer;
-# elif __cplusplus < 201103L
+# elif BOOST_NO_CXX11_SMART_PTR
           typedef std::auto_ptr<T> smart_pointer;
 # else
           typedef std::unique_ptr<T> smart_pointer;

include/boost/python/to_python_value.hpp

@@ -118,7 +118,7 @@ struct object_manager_get_pytype<true>
     PyTypeObject const* get_pytype(boost::type<shared_ptr<U> &> *) const {return converter::registered<U>::converters.to_python_target_type();}
     template <class U>
     PyTypeObject const* get_pytype(boost::type<const shared_ptr<U> &> *) const {return converter::registered<U>::converters.to_python_target_type();}
-# if __cplusplus >= 201103L
+# if !defined(BOOST_NO_CXX11_SMART_PTR)
     template <class U>
     PyTypeObject const* get_pytype(boost::type<std::shared_ptr<U> &> *) const {return converter::registered<U>::converters.to_python_target_type();}
     template <class U>