I gave up on the MinGW (64) sites years ago. Ruben something used to
provide a relatively up to date compiler but as I recall he stopped
doing that. And then it was a real hassle getting a good version (there
was even someone, probably insane, who added a dependency on MFC
libraries, as I recall).
Just use the Nuwen distro.
It lacks certain features such as encoding conversion support and the
latest ubsan-support and such, but very nice, maintained by STL over at
Microsoft.
- Alf