linkers: Disable -rpath-link with ld.zigcc

[RossComputerGuy]

Requires #12293

Zig issue ziglang/zig#18713

Draft until I figure out how to test this with Nix

[tristan957]

Can we grep the help output from zig to know if it supports this?

[tristan957]

Or we can do a version check

[RossComputerGuy]

Version check yes, help check would probably be slower and might display the wrong thing (not 100% sure).

[tristan957]

Hmm I guess support for this flag hasn't been planned, so the id check makes sense for now.

[RossComputerGuy]

Yeah hence the comment with the link. We can change it once the flag exists in a release version.

[RossComputerGuy]

Looks like the tests are working with this PR.

[tristan957]

So we need to merge this PR into the other one?

[RossComputerGuy]

Yeah, probably.

[eli-schwartz]

What we really need here is to have a single PR that contains all the necessary changes:

• this patch
• the patch from linkers: basic support for the 'zig cc' linker #12293
• a patch to enable zig in the CI workflows, see Add Zig to ubuntu-rolling image, CI test #12953

And a second PR that adds zig to the CI images without adding it to the CI workflows, see #12953 again.

Currently everything is spread out quite a bit and it's difficult to get a handle on whether it all works.

[RossComputerGuy]

What we really need here is to have a single PR that contains all the necessary changes

I can work on that this evening. I already have a branch that I was testing with that has this PR and the main one merged in.

[RossComputerGuy]

@eli-schwartz I've opened #13515, going to let CI run and test locally when I have the time. Will fix things tonight if there's any problems.