linux-kernel - Re: [PATCH] docs: rust: remove `CC=clang` mentions

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Date: Fri, 15 Dec 2023 13:51:41 +0100
From: Alice Ryhl <aliceryhl@...gle.com>
To: Miguel Ojeda <ojeda@...nel.org>
Cc: Wedson Almeida Filho <wedsonaf@...il.com>, Alex Gaynor <alex.gaynor@...il.com>, 
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...sung.com>, 
	rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org, 
	patches@...ts.linux.dev, Jonathan Corbet <corbet@....net>, 
	Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, 
	Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, linux-doc@...r.kernel.org, 
	llvm@...ts.linux.dev
Subject: Re: [PATCH] docs: rust: remove `CC=clang` mentions

On Fri, Dec 15, 2023 at 1:48 PM Miguel Ojeda <ojeda@...nel.org> wrote:
>
> Nowadays all architectures except s390 recommend using `LLVM=1` instead of
> `CC=clang`, and since commit a3c6bfba4429 ("Documentation/llvm: refresh
> docs") the Kbuild LLVM documentation makes `LLVM=1` the way to go:
>
>     We want to encourage the use of ``LLVM=1`` rather than just
>     ``CC=clang``. Make that suggestion "above the fold" and "front and
>     center" in our docs.
>
> In particular, that commit removes the examples with `CC=clang`.
>
> Thus do the same in the Rust Quick Start guide, i.e. remove the `CC=clang`
> mentions, especially since the architectures that have had their Rust
> support upstreamed (or soon to be upstreamed) are all `LLVM=1` ones
> anyway. And perhaps by the time Rust is supported for s390 (or new
> architectures), it may have moved to `LLVM=1` anyway. Otherwise,
> this can be added back if needed (or perhaps an extra link to
> Documentation/kbuild/llvm.rst).
>
> This should also help avoiding potential confusion around `CC=clang` [1].
>
> Link: https://lore.kernel.org/rust-for-linux/6df6e8e5-8d5b-4d3d-91b5-bc0e90c424ea@nvidia.com/ [1]
> Signed-off-by: Miguel Ojeda <ojeda@...nel.org>

Reviewed-by: Alice Ryhl <aliceryhl@...gle.com>