add boost on mac

macx64/include/boost/contract/detail/name.hpp

@@ -0,0 +1,26 @@
+
+#ifndef BOOST_CONTRACT_DETAIL_NAME_HPP_
+#define BOOST_CONTRACT_DETAIL_NAME_HPP_
+
+// Copyright (C) 2008-2018 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0 (see accompanying
+// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
+// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
+
+#include <boost/contract/detail/config.hpp>
+#include <boost/preprocessor/cat.hpp>
+
+/* PUBLIC */
+
+// NOTE: Explicitly list number of names to concatenate using ..._NAME-n
+// (instead of using ..._SEQ_CAT or similar) for optimal speed and reentrancy.
+
+#define BOOST_CONTRACT_DETAIL_NAME1(name1) \
+    BOOST_PP_CAT(BOOST_CONTRACT_DETAIL_NAME_PREFIX, name1)
+
+#define BOOST_CONTRACT_DETAIL_NAME2(name1, name2) \
+    BOOST_PP_CAT(BOOST_CONTRACT_DETAIL_NAME_PREFIX, BOOST_PP_CAT(name1, \
+            BOOST_PP_CAT(BOOST_CONTRACT_DETAIL_NAME_INFIX, name2)))
+       
+#endif // #include guard
+