Enable file locking support for Hurd

[Fabian-Gruenbichler]

like Illumos and AIX, Hurd was missed when originally introducing locking gates per target OS. building rustc on Hurd was broken as a result since 1.91.

[Fabian-Gruenbichler]

(marked as draft for now because my test build of 1.91.1 with this backported is still running, and I want to ensure it works as expected end-to-end before it gets merged!)

[workingjubilee]

Thanks for the fix. This obviously seems fine if it fixes the issue, which you will know better, so, r=me after you verify.

r? @workingjubilee
@bors delegate+

[bors]

✌️ @Fabian-Gruenbichler, you can now approve this pull request!

If @workingjubilee told you to "r=me" after making some further change, please make that change, then do @bors r=@workingjubilee

[rustbot]

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  • d78bf36

[Fabian-Gruenbichler]

bors r=@workingjubilee

[Fabian-Gruenbichler]

can confirm that building 1.91.1 with a backport of this and --bypass-bootstrap-lock works, and a rebuild using that 1.91.1 build without --bypass-bootstrap-lock works as well, so I would consider this ready for reviewing :)