mirror of https://github.com/haya3218/SDfmL.git
43 lines
1.6 KiB
C++
43 lines
1.6 KiB
C++
#ifndef TOML11_VERSION_HPP
|
|
#define TOML11_VERSION_HPP
|
|
|
|
// This file checks C++ version.
|
|
|
|
#ifndef __cplusplus
|
|
# error "__cplusplus is not defined"
|
|
#endif
|
|
|
|
// Since MSVC does not define `__cplusplus` correctly unless you pass
|
|
// `/Zc:__cplusplus` when compiling, the workaround macros are added.
|
|
// Those enables you to define version manually or to use MSVC specific
|
|
// version macro automatically.
|
|
//
|
|
// The value of `__cplusplus` macro is defined in the C++ standard spec, but
|
|
// MSVC ignores the value, maybe because of backward compatibility. Instead,
|
|
// MSVC defines _MSVC_LANG that has the same value as __cplusplus defined in
|
|
// the C++ standard. First we check the manual version definition, and then
|
|
// we check if _MSVC_LANG is defined. If neither, use normal `__cplusplus`.
|
|
//
|
|
// FYI: https://docs.microsoft.com/en-us/cpp/build/reference/zc-cplusplus?view=msvc-170
|
|
// https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros?view=msvc-170
|
|
//
|
|
#if defined(TOML11_ENFORCE_CXX11)
|
|
# define TOML11_CPLUSPLUS_STANDARD_VERSION 201103L
|
|
#elif defined(TOML11_ENFORCE_CXX14)
|
|
# define TOML11_CPLUSPLUS_STANDARD_VERSION 201402L
|
|
#elif defined(TOML11_ENFORCE_CXX17)
|
|
# define TOML11_CPLUSPLUS_STANDARD_VERSION 201703L
|
|
#elif defined(TOML11_ENFORCE_CXX20)
|
|
# define TOML11_CPLUSPLUS_STANDARD_VERSION 202002L
|
|
#elif defined(_MSVC_LANG) && defined(_MSC_VER) && 1910 <= _MSC_VER
|
|
# define TOML11_CPLUSPLUS_STANDARD_VERSION _MSVC_LANG
|
|
#else
|
|
# define TOML11_CPLUSPLUS_STANDARD_VERSION __cplusplus
|
|
#endif
|
|
|
|
#if TOML11_CPLUSPLUS_STANDARD_VERSION < 201103L && _MSC_VER < 1900
|
|
# error "toml11 requires C++11 or later."
|
|
#endif
|
|
|
|
#endif// TOML11_VERSION_HPP
|