add boost on mac

macx64/include/boost/process/detail/traits/error.hpp

@@ -0,0 +1,27 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// 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_PROCESS_DETAIL_TRAITS_ERROR_HPP_
+#define BOOST_PROCESS_DETAIL_TRAITS_ERROR_HPP_
+
+#include <boost/process/detail/config.hpp>
+#include <system_error>
+#include <boost/process/detail/traits/decl.hpp>
+
+
+
+namespace boost { namespace process { namespace detail {
+
+struct error_tag;
+
+template<>
+struct initializer_tag<std::error_code>;
+
+}}}
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_HANDLER_HPP_ */