[compiler-rt] [compiler-rt/darwin] Disable building sanitizers on platforms without fork(). (PR #83485)

[Nico Weber via llvm-commits]

nico wrote:

> I think you can use sanitizer libs you build...can't you?

I'd expect them to be killed once the `fork()` is run that tries to execute `llvm-sybmbolizer` when an issue is found as you say, right?

Taking a step back, is this causing problems on your end, or is this more a hypothetical situation we're discussing? :)

https://github.com/llvm/llvm-project/pull/83485