The second issue was that the compilation of GCC did not work
for version gcc-11.2.0 on my version of MinGW. Many of the
configure flags resulted in warnings in the configure process
since they were not recognized (should these flags be in the
configure command?):
```
configure: WARNING: unrecognized options: --disable-bootstrap,
--disable-werror, --disable-libgomp, --disable-libmudflap,
--disable-libquadmath, --disable-libitm,
--disable-libsanitizer, --disable-libstdcxx-pch, --with-arch,
--with-gmp, --with-mpfr, --with-mpc, --with-isl,
--enable-libphobos
```
These are probably from the configure flags shown when running
`gcc --version`. When I use the same configure flags as the build
of gcc I am using, I also get the warning for unrecognized
options.
