[PATCH v4 4/4] RISC-V: fix gcc + rust builds

[Miguel Ojeda]

On Mon, Nov 24, 2025 at 1:23 AM Asuna Yang <spriteovo at gmail.com> wrote:
>
> Commit 33549fcf37ec ("RISC-V: disallow gcc + rust builds") disabled GCC
> + Rust builds for RISC-V due to differences in extension handling
> compared to LLVM.

This should mention what we are doing, i.e. re-enabling the GCC + Rust
support again.

Also, I would recommend avoiding to say "fix" in the title, unless it
is actually a fix, but perhaps the RISC-V maintainers consider it a
fix.

> Add `rust-bindgen-option` conditions for the availability of libclang to
> the RISC-V extension Kconfig symbols that depend on the `cc-option`
> function.

This is now in a different commit, right?

> Update the documentation, GCC + Rust builds for RISC-V are now
> supported.

"are now maintained" may be better to avoid confusing it with the
"Level of Support" in the table.

> Documentation/rust/arch-support.rst |  2 +-
> rust/Makefile                       |  3 ++-
> scripts/Makefile.rust               |  1 +

In any case, for the Rust bits, this seems OK (I didn't test it, though), so:

Acked-by: Miguel Ojeda <ojeda at kernel.org>

(By the way, I wouldn't mind if we started adding `MAINTAINERS`
entries on who is maintaining particular architectures for Rust,
especially if there is someone in particular involved with it etc.).

Thanks!

Cheers,
Miguel