diff --git a/include/boost/config/compiler/clang.hpp b/include/boost/config/compiler/clang.hpp
index 48ed3c71..5481e5ee 100644
--- a/include/boost/config/compiler/clang.hpp
+++ b/include/boost/config/compiler/clang.hpp
@@ -62,9 +62,11 @@
 // even though it defines __SIZEOF_INT128__.
 // See https://svn.boost.org/trac/boost/ticket/10418
 // Only re-enable this for nvcc if you're absolutely sure
-// of the circumstances under which it's supported:
+// of the circumstances under which it's supported.
+// Similarly __SIZEOF_INT128__ is defined when targetting msvc
+// compatibility even though the required support functions are absent.
 //
-#if defined(__SIZEOF_INT128__) && !defined(__CUDACC__)
+#if defined(__SIZEOF_INT128__) && !defined(__CUDACC__) && !defined(_MSC_VER)
 #  define BOOST_HAS_INT128
 #endif
 
diff --git a/include/boost/config/compiler/visualc.hpp b/include/boost/config/compiler/visualc.hpp
index 93908cea..baaab589 100644
--- a/include/boost/config/compiler/visualc.hpp
+++ b/include/boost/config/compiler/visualc.hpp
@@ -55,6 +55,7 @@
 #  define BOOST_NO_CXX11_EXTERN_TEMPLATE
 // Variadic macros do not exist for VC7.1 and lower
 #  define BOOST_NO_CXX11_VARIADIC_MACROS
+#  define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
 #endif
 
 #if _MSC_VER < 1500  // 140X == VC++ 8.0
diff --git a/include/boost/config/platform/macos.hpp b/include/boost/config/platform/macos.hpp
index 6d876b12..5be4e3b3 100644
--- a/include/boost/config/platform/macos.hpp
+++ b/include/boost/config/platform/macos.hpp
@@ -47,7 +47,7 @@
 #    define BOOST_NO_STDC_NAMESPACE
 #  endif
 
-#  if (__GNUC__ == 4)
+#  if (__GNUC__ >= 4)
 
 // Both gcc and intel require these.  
 #    define BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE