Config.hpp

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//          Copyright Dominic (DNKpp) Koepke 2024-2026.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE_1_0.txt or copy at
//          https://www.boost.org/LICENSE_1_0.txt)
 
#ifndef MIMICPP_CONFIG_CONFIG_HPP
#define MIMICPP_CONFIG_CONFIG_HPP
 
#pragma once
 
#ifndef MIMICPP_DETAIL_IS_MODULE
    #include <cstdint>
    #include <version>
#endif
 
#ifdef MIMICPP_DETAIL_IS_MODULE
    #define MIMICPP_DETAIL_MODULE_EXPORT export
#else
    #define MIMICPP_DETAIL_MODULE_EXPORT
#endif
 
#if INTPTR_MAX < INT64_MAX
    #define MIMICPP_DETAIL_IS_32BIT 1
#endif
 
#ifdef __GNUC__
    #ifdef __clang__
        #define MIMICPP_DETAIL_IS_CLANG 1
        #ifdef __apple_build_version__
            #define MIMICPP_DETAIL_IS_APPLE_CLANG 1
        #endif
    #else
        #define MIMICPP_DETAIL_IS_GCC 1
    #endif
#endif
 
#ifdef _LIBCPP_VERSION
    #define MIMICPP_DETAIL_USES_LIBCXX 1
#endif
 
#ifdef _WIN32
    #define MIMICPP_DETAIL_IS_WINDOWS 1
#endif
 
#ifdef _MSC_VER
    #ifdef __clang__
        #define MIMICPP_DETAIL_IS_CLANG_CL 1
    #else
        #define MIMICPP_DETAIL_IS_MSVC 1
    #endif
#endif
 
#ifndef MIMICPP_ASSERT
    #define MIMICPP_ASSERT(condition, msg) (void(0))
#endif
 
// clang-format off
// Prevent number from getting decorated with '.
#if 201907L <= __cpp_lib_constexpr_string
    // clang-format on
    #define MIMICPP_DETAIL_CONSTEXPR_STRING constexpr
#else
    #define MIMICPP_DETAIL_CONSTEXPR_STRING inline
#endif
 
// clang-format off
// Prevent number from getting decorated with '.
#if 201907L <= __cpp_lib_constexpr_vector
    // clang-format on
    #define MIMICPP_DETAIL_CONSTEXPR_VECTOR constexpr
#else
    #define MIMICPP_DETAIL_CONSTEXPR_VECTOR inline
#endif
 
// Requires constexpr vector and constexpr optional
// clang-format off
// Prevent number from getting decorated with '.
#if 201907L <= __cpp_lib_constexpr_vector \
    && 202106L <= __cpp_lib_optional
    // clang-format on
 
    // std::optional is not fully constexpr on libc++ < 19.
    // clang-format off
    // Prevent number from getting decorated with '.
    #if !MIMICPP_DETAIL_USES_LIBCXX \
        || 190000 <= _LIBCPP_VERSION
        // clang-format on
        #define MIMICPP_DETAIL_CONSTEXPR_PRETTY_TYPES constexpr
    #endif
#endif
 
#ifndef MIMICPP_DETAIL_CONSTEXPR_PRETTY_TYPES
    #define MIMICPP_DETAIL_CONSTEXPR_PRETTY_TYPES inline
#endif
 
// gcc 10 requires a workaround, due to some ambiguities.
// see: https://github.com/DNKpp/mimicpp/issues/151
#if MIMICPP_DETAIL_IS_GCC \
    && __GNUC__ <= 10
    #define MIMICPP_DETAIL_STD_GET_WORKAROUND 1
#endif
 
#ifdef __cpp_lib_source_location
    #define MIMICPP_DETAIL_HAS_SOURCE_LOCATION 1
#endif
 
#endif