make zig work on OSX via -DZIG_WORKAROUND_4799=ON

[timotheecour]

@andrewrk

• refs osx: error: unable to create target: 'Unable to find target for this triple (no targets are registered)' #5055
• refs homebrew and llvm 10 packages in apt.llvm.org are broken with undefined reference to getPollyPluginInfo #4799
  (what i suggested in osx: error: unable to create target: 'Unable to find target for this triple (no targets are registered)' #5055 (comment))
  after merging, could you tag a release (minor or patch, not sure) so that homebrew formula can avoid having to either patch or build from some arbitrary hash and instead use a tag?

[timotheecour]

ping @andrewrk (especially now that the overeager lock bot closed Homebrew/homebrew-core#53198)

[andrewrk]

I sincerely appreciate you taking the time to make this pull request.

However, I don't want to pile hacks upon hacks. I'm just going to leave this broken, with a documented manual workaround, until it's fixed upstream.

[andrewrk]

this is not advisable, will crash people's computers under common circumstances.

[timotheecour]

However, I don't want to pile hacks upon hacks. I'm just going to leave this broken, with a documented manual workaround, until it's fixed upstream.

this makes no sense to me. The hack can be removed as soon as it's fixed upstream, it's better in all regards compared to forcing package managers (eg homebrew) to do those manual changes. It's not piling hacks upon hacks, it's just the simplest, practical, least friction solution for everyone.

[andrewrk]

this makes no sense to me. The hack can be removed as soon as it's fixed upstream, it's better in all regards compared to forcing package managers (eg homebrew) to do those manual changes. It's not piling hacks upon hacks, it's just the simplest, practical, least friction solution for everyone.

OK, I reconsidered and I agree with you, thanks for your patience.