[PATCH] D124106: [lld/mac] Warn that writing zippered outputs isn't implemented

[Steven Wu via Phabricator via llvm-commits]

steven_wu added a comment.

Maybe it is easier if you only warn if multiple different platforms are specified? You can preserve the last one wins for the same platform.
Or even more specifically, the only supported configuration is `macOS` + `macCatalyst` and you can only toss out a warning if this configuration is used.


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https://reviews.llvm.org/D124106