[llvm] Fix warnings while building llvm against emscripten for web assembly (PR #118262)

[Anutosh Bhat via llvm-commits]

anutosh491 wrote:

Thanks for the discussion here. I would just say that I have been playing around with building llvm for wasm through emscripten. And I see few errors when that I done, hence I raised this and https://github.com/llvm/llvm-project/pull/118051 (approved needs merge).

This would add more convinience rather than the long list of warnings that occur during the build. If we know we need to go for a static build, I guess we can possibly force it like what has been done here.

https://github.com/llvm/llvm-project/pull/118262