add boost on mac

macx64/include/boost/fiber/detail/is_all_same.hpp

@@ -0,0 +1,44 @@
+
+//          Copyright Oliver Kowalke 2017.
+// Distributed under 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)
+
+#ifndef BOOST_FIBERS_DETAIL_IS_ALL_SAME_H
+#define BOOST_FIBERS_DETAIL_IS_ALL_SAME_H
+
+#include <type_traits>
+
+#include <boost/config.hpp>
+
+#include <boost/fiber/detail/config.hpp>
+
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+
+namespace boost {
+namespace fibers {
+namespace detail {
+
+template< typename X, typename ... Y >
+struct is_all_same;
+
+template< typename X, typename Y0, typename ... Y >
+struct is_all_same< X, Y0, Y ... > {
+    static constexpr bool value =
+        std::is_same< X, Y0 >::value && is_all_same< X, Y ... >::value;
+};
+
+template< typename X, typename Y0 >
+struct is_all_same< X, Y0 > {
+    static constexpr bool value = std::is_same< X, Y0 >::value;
+};
+
+}}}
+
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+
+#endif // BOOST_FIBERS_DETAIL_IS_ALL_SAME_H