[llvm] [CMake] Factor check- target deps to reduce build.ninja size by 45% (PR #223592)

[Reid Kleckner via llvm-commits]

rnk wrote:

> Hm, another fight against cmake... is there some cmake issue about this problem? (Not that we shouldn't do this, but the proper fix is for CMake to stop doing this redundant expansion, so we should at least file an issue that this is a practical problem and reference that here.)

I'm asking some experts internally, we'll see what I can find.

https://github.com/llvm/llvm-project/pull/223592