add boost on mac

macx64/include/boost/vmd/tuple/size.hpp

@@ -0,0 +1,52 @@
+
+//  (C) Copyright Edward Diener 2015
+//  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).
+
+#if !defined(BOOST_VMD_TUPLE_SIZE_HPP)
+#define BOOST_VMD_TUPLE_SIZE_HPP
+
+#include <boost/vmd/detail/setup.hpp>
+
+#if BOOST_PP_VARIADICS
+
+#include <boost/preprocessor/control/iif.hpp>
+#include <boost/preprocessor/tuple/size.hpp>
+#include <boost/vmd/identity.hpp>
+#include <boost/vmd/is_empty.hpp>
+
+/*
+
+  The succeeding comments in this file are in doxygen format.
+
+*/
+
+/** \file
+*/
+
+/** \def BOOST_VMD_TUPLE_SIZE(tuple)
+
+    \brief  expands to the size of the tuple passed to it. 
+
+    tuple = tuple whose size is to be extracted. 
+    
+    If the tuple is an empty tuple its size is 0.
+    Otherwise the result is the number of elements in the tuple.
+*/
+
+#define BOOST_VMD_TUPLE_SIZE(tuple) \
+    BOOST_VMD_IDENTITY_RESULT \
+        ( \
+        BOOST_PP_IIF \
+            ( \
+            BOOST_VMD_IS_EMPTY(tuple), \
+            BOOST_VMD_IDENTITY(0), \
+            BOOST_PP_TUPLE_SIZE \
+            ) \
+        (tuple) \
+        ) \
+/**/
+
+#endif /* BOOST_PP_VARIADICS */
+#endif /* BOOST_VMD_TUPLE_SIZE_HPP */