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+//  (C) Copyright 2008-10 Anthony Williams
+//  (C) Copyright 2011-2012,2015 Vicente J. Botet Escriba
+//
+//  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_THREAD_FUTURES_FUTURE_ERROR_CODE_HPP
+#define BOOST_THREAD_FUTURES_FUTURE_ERROR_CODE_HPP
+
+#include <boost/thread/detail/config.hpp>
+#include <boost/core/scoped_enum.hpp>
+#include <boost/system/error_code.hpp>
+#include <boost/type_traits/integral_constant.hpp>
+
+namespace boost
+{
+
+  //enum class future_errc
+  BOOST_SCOPED_ENUM_DECLARE_BEGIN(future_errc)
+  {
+      broken_promise = 1,
+      future_already_retrieved,
+      promise_already_satisfied,
+      no_state
+  }
+  BOOST_SCOPED_ENUM_DECLARE_END(future_errc)
+
+  namespace system
+  {
+    template <>
+    struct BOOST_SYMBOL_VISIBLE is_error_code_enum< ::boost::future_errc> : public true_type {};
+
+    #ifdef BOOST_NO_CXX11_SCOPED_ENUMS
+    template <>
+    struct BOOST_SYMBOL_VISIBLE is_error_code_enum< ::boost::future_errc::enum_type> : public true_type { };
+    #endif
+  } // system
+
+  BOOST_THREAD_DECL
+  const system::error_category& future_category() BOOST_NOEXCEPT;
+
+  namespace system
+  {
+    inline
+    error_code
+    make_error_code(future_errc e) BOOST_NOEXCEPT
+    {
+        return error_code(underlying_cast<int>(e), boost::future_category());
+    }
+
+    inline
+    error_condition
+    make_error_condition(future_errc e) BOOST_NOEXCEPT
+    {
+        return error_condition(underlying_cast<int>(e), boost::future_category());
+    }
+  } // system
+} // boost
+
+#endif // header