/usr/include/boost/system/detail
Edit: /usr/include/boost/system/detail/config.hpp (1282B)
#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
#include
// 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