boost/system/detail/config.hpp
#ifndef BOOST_SYSTEM_DETAIL_CONFIG_HPP_INCLUDED
#define BOOST_SYSTEM_DETAIL_CONFIG_HPP_INCLUDED
// Copyright 2018 Peter Dimov
//
// 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)
//
// See http://www.boost.org/libs/system for documentation.
#include <boost/config.hpp>
#include <boost/config/workaround.hpp>
// BOOST_SYSTEM_HAS_SYSTEM_ERROR
#if !defined(BOOST_NO_CXX11_HDR_SYSTEM_ERROR)
# define BOOST_SYSTEM_HAS_SYSTEM_ERROR
#endif
#if BOOST_WORKAROUND(BOOST_GCC, < 40600)
// g++ 4.4's <map> is not good enough
# undef BOOST_SYSTEM_HAS_SYSTEM_ERROR
#endif
#if defined(BOOST_NO_CXX11_HDR_MUTEX)
// Required for thread-safe map manipulation
# undef BOOST_SYSTEM_HAS_SYSTEM_ERROR
#endif
// BOOST_SYSTEM_NOEXCEPT
// Retained for backward compatibility
#define BOOST_SYSTEM_NOEXCEPT BOOST_NOEXCEPT
// BOOST_SYSTEM_HAS_CONSTEXPR
#if !defined(BOOST_NO_CXX14_CONSTEXPR)
# define BOOST_SYSTEM_HAS_CONSTEXPR
#endif
#if BOOST_WORKAROUND(BOOST_GCC, < 60000)
# undef BOOST_SYSTEM_HAS_CONSTEXPR
#endif
#if defined(BOOST_SYSTEM_HAS_CONSTEXPR)
# define BOOST_SYSTEM_CONSTEXPR constexpr
#else
# define BOOST_SYSTEM_CONSTEXPR
#endif
// BOOST_SYSTEM_DEPRECATED
#if defined(__clang__)
# define BOOST_SYSTEM_DEPRECATED(msg) __attribute__((deprecated(msg)))
#elif defined(__GNUC__)
# if __GNUC__ * 100 + __GNUC_MINOR__ >= 405
# define BOOST_SYSTEM_DEPRECATED(msg) __attribute__((deprecated(msg)))
# else
# define BOOST_SYSTEM_DEPRECATED(msg) __attribute__((deprecated))
# endif
#elif defined(_MSC_VER)
# define BOOST_SYSTEM_DEPRECATED(msg) __declspec(deprecated(msg))
#endif
#endif // BOOST_SYSTEM_DETAIL_CONFIG_HPP_INCLUDED