[Mlir-commits] [mlir] [mlir][cmake] Enable -Wundef. (PR #84011)

[Mehdi Amini]

https://github.com/joker-eph approved this pull request.

Awesome :)

I had a work-in-progress to do this in LLVM itself, but let's start with MLIR indeed! :)

Can you add some documentation in mlir-config.h that describe that we want cmakedefine01 because we're relying on Wundef for finding missing includes?

https://github.com/llvm/llvm-project/pull/84011