linux-kernel - Re: [PATCH] kbuild: rust: add `CONFIG_RUSTC_LLVM

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Message-ID: <CANiq72ng9hGcncSr62bqXPq+u4UhQgwh_BvKkv==zkyseXJpiQ@mail.gmail.com>
Date: Tue, 15 Oct 2024 00:00:09 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Gary Guo <gary@...yguo.net>
Cc: masahiroy@...nel.org, Miguel Ojeda <ojeda@...nel.org>, 
	Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...nel.org>, 
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, 
	Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, 
	Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, Petr Mladek <pmladek@...e.com>, Tejun Heo <tj@...nel.org>, 
	Yoann Congal <yoann.congal@...le.fr>, Randy Dunlap <rdunlap@...radead.org>, 
	Roman Gushchin <roman.gushchin@...ux.dev>, Jens Axboe <axboe@...nel.dk>, Jann Horn <jannh@...gle.com>, 
	Mark Rutland <mark.rutland@....com>, kees@...nel.org, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org, llvm@...ts.linux.dev, 
	rust-for-linux@...r.kernel.org, samitolvanen@...gle.com
Subject: Re: [PATCH] kbuild: rust: add `CONFIG_RUSTC_LLVM_VERSION`

On Fri, Oct 11, 2024 at 1:41 PM Gary Guo <gary@...yguo.net> wrote:
>
> Each version of Rust supports a range of LLVM versions. There are cases where
> we want to gate a config on the LLVM version instead of the Rust version.
> Normalized cfi integer tags are one example [1].
>
> The invocation of rustc-version is being moved from init/Kconfig to
> scripts/Kconfig.include for consistency with cc-version.
>
> Link: https://lore.kernel.org/all/20240925-cfi-norm-kasan-fix-v1-1-0328985cdf33@google.com/ [1]
> Signed-off-by: Gary Guo <gary@...yguo.net>

Applied to `rust-fixes` -- thanks everyone!

    [ Added missing `-llvm` to the Usage documentation. - Miguel ]

Cheers,
Miguel