コンパイラ・C++ 標準の判定

main.cpp

#include <iostream>

int main(int, char**) {

    #if __cplusplus > 199711L
    system("uname -a");
    #endif

    // コンパイラの判定
    #ifdef __clang_version__
    std::cout << "Compiled by Clang " << __clang_version__ << std::endl;
    #elif defined __GNUC__
    std::cout << "Compiled by GCC " << __GNUC__ << "." << __GNUC_MINOR__ << "." << __GNUC_PATCHLEVEL__ << std::endl;
    #elif defined _MSC_VER
    std::cout << "Compiled by Microsoft Visual C++ (MSVC) " << _MSC_VER << "(" << _MSC_FULL_VER << ")" << std::endl;
    #else
    std::cout << "Compiled by unknown compiler" << std::endl;
    #endif

    // C++ 標準の判定
    #if __cplusplus == 199711L
    std::cout << "C++98 or C++03, 'ISO C++ 1998 with amendments' standard";
    #elif __cplusplus == 201103L
    std::cout << "C++11, 'ISO C++ 2011 with amendments' standard";
    #elif __cplusplus == 201402L
    std::cout << "C++14, 'ISO C++ 2014 with amendments' standard";
    #elif __cplusplus == 201703L
    std::cout << "C++17, 'ISO C++ 2017 with amendments' standard";
    #elif __cplusplus == 201707L
    std::cout << "C++2a, 'Working draft for ISO C++ 2020' standard";
    #elif __cplusplus == 201709L
    std::cout << "C++2a, 'Working draft for ISO C++ 2020' standard";
    #elif __cplusplus == 202002L
    std::cout << "C++20, 'ISO C++ 2020 with amendments' standard";
    #else
    std::cout << "C++??";
    #endif
    std::cout << "  (__cplusplus: " << __cplusplus << ")" << std::endl;

    return 0;
}