config.hpp
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//
// Copyright (c) 2012 Artyom Beilis (Tonkikh)
// Copyright (c) 2020 - 2022 Alexander Grund
//
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
// Defines macros which otherwise get defined by including <boost/config.hpp>
#if(defined(_WIN32) || defined(__WIN32__) || defined(WIN32)) && !defined(__CYGWIN__)
#define BOOST_WINDOWS
#endif
#ifdef _MSC_VER
#define BOOST_MSVC _MSC_VER
#endif
#ifdef __GNUC__
#define BOOST_SYMBOL_VISIBLE __attribute__((__visibility__("default")))
#endif
#ifndef BOOST_SYMBOL_VISIBLE
#define BOOST_SYMBOL_VISIBLE
#endif
#ifdef BOOST_WINDOWS
#define BOOST_SYMBOL_EXPORT __declspec(dllexport)
#define BOOST_SYMBOL_IMPORT __declspec(dllimport)
#elif defined(__CYGWIN__) && defined(__GNUC__) && (__GNUC__ >= 4)
#define BOOST_SYMBOL_EXPORT __attribute__((__dllexport__))
#define BOOST_SYMBOL_IMPORT __attribute__((__dllimport__))
#else
#define BOOST_SYMBOL_EXPORT BOOST_SYMBOL_VISIBLE
#define BOOST_SYMBOL_IMPORT
#endif
#if defined __GNUC__
#define BOOST_LIKELY(x) __builtin_expect(x, 1)
#define BOOST_UNLIKELY(x) __builtin_expect(x, 0)
#else
#if !defined(BOOST_LIKELY)
#define BOOST_LIKELY(x) x
#endif
#if !defined(BOOST_UNLIKELY)
#define BOOST_UNLIKELY(x) x
#endif
#endif