It is a byzantine path, also because gcc switched to C++ at some point (for no good reason IMHO). But there is a project that maintains such a bootstrap path:

It is a byzantine path, also because gcc switched to C++ at some point (for no good reason IMHO). But there is a project that maintains such a bootstrap path: https://www.gnu.org/software/mes/ https://www.gnu.org/software/mes/