add boost on mac

macx64/include/boost/fiber/future/detail/task_base.hpp

@@ -0,0 +1,41 @@
+//          Copyright Oliver Kowalke 2013.
+// 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_TASK_BASE_H
+#define BOOST_FIBERS_DETAIL_TASK_BASE_H
+
+#include <boost/config.hpp>
+#include <boost/intrusive_ptr.hpp>
+
+#include <boost/fiber/detail/config.hpp>
+#include <boost/fiber/future/detail/shared_state.hpp>
+
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+
+namespace boost {
+namespace fibers {
+namespace detail {
+
+template< typename R, typename ... Args >
+struct task_base : public shared_state< R > {
+    typedef intrusive_ptr< task_base >  ptr_type;
+
+    virtual ~task_base() {
+    }
+
+    virtual void run( Args && ... args) = 0;
+
+    virtual ptr_type reset() = 0;
+};
+
+}}}
+
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+
+#endif // BOOST_FIBERS_DETAIL_TASK_BASE_H