[Bug other/116119] Error building gcc 8.3.0

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116119

--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oh I see you already said you're using contrib/download_prerequisites so that's
all you need.