C++ Standards Support in GCC - GNU Project

GCC supports different dialects of C++, corresponding to the multiple published ISO standards. Which standard it implements can be selected using the -std= command-line option. C++98 C++11 C++14 C++17 C++20 C++23 C++26 Technical Specifications For information about the status of C++ defect reports, please see this page. For information about the status of the library implementation, please see the

[asari3]

GCC 6.1 から C++14 がデフォルトになっていた

[ppp-lab]

gcc の各種機能への対応状況