Re: [PATCH 2/3] kbuild: rust: apply `CONFIG_WERROR` to all Rust targets

Miguel Ojeda
2025-01-12T18:32:52Z

On Fri, Jan 10, 2025 at 2:33 PM Andreas Hindborg <a.hindborg@kernel.org> wrote:
>
> @Miguel: Should I look into exempting host programs, or do you already
> have an idea of how to implement?

I will send a v2. I may take the chance to already apply the first
patch into `rust-next`, since that could go in already.

> Regarding host programs, it would be nice to set werror for those. How
> does C do this? Is W=e enough?

Neither `CONFIG_WERROR` nor `W=e` apply to C host programs.

However, you may already do:

make ... HOSTCFLAGS=-Werror

And for Rust:

make ... HOSTRUSTFLAGS=-Dwarnings

I could perhaps add that into the docs.

I hope that helps, and thanks for the tags!

Cheers,
Miguel