[Bug bootstrap/116730] build is broken when building in subdirectory of a subdirectory of the src directory

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116730

--- Comment #20 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Hime Haieto from comment #16)
> But you know, what...I'm just going to try and see what happens when I
> simply delete that entire part outright

That can't possibly work.