[chandlerc1024]

(disclaimer: I'm one of the authors of this)

A bunch of comments seem to be comparing and contrasting CMake+Ninja vs. Bazel. Just my two cents, but I think that's missing the real point of this work.

It isn't about whether Bazel is a better build system for LLVM. At least, that isn't my motivation.

There are users of LLVM's libraries that use Bazel. Whether for good or bad reasons, it is extremely useful to enable them to use LLVM's libraries with a fully native Bazel build. That is my motivation: enabling the users of LLVM libraries that need to use Bazel for whatever reason to have the best possible experience.