[Bug c++/109250] Invalid configuration `loongarch64-linux-gnu': machine `loongarch64-unknown' not recognized

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109250

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Like I said, don't build in the source directory, and try a newer version of
GMP.