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References: <20231214222253.116734-1-ojeda@kernel.org>
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From: Alice Ryhl <aliceryhl@google.com>
Date: Fri, 15 Dec 2023 11:33:48 +0100
Message-ID: <CAH5fLgjPznV1pjaxoXovnfwSBOv6sKZc3G_MwfELbmwH0-Xf8Q@mail.gmail.com>
Subject: Re: [PATCH] kbuild: rust: add `rustupoverride` target
To: Miguel Ojeda <ojeda@kernel.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>, Wedson Almeida Filho <wedsonaf@gmail.com>, 
	Alex Gaynor <alex.gaynor@gmail.com>, Nathan Chancellor <nathan@kernel.org>, 
	Nick Desaulniers <ndesaulniers@google.com>, Nicolas Schier <nicolas@fjasle.eu>, 
	Boqun Feng <boqun.feng@gmail.com>, Gary Guo <gary@garyguo.net>, 
	=?UTF-8?Q?Bj=C3=B6rn_Roy_Baron?= <bjorn3_gh@protonmail.com>, 
	Benno Lossin <benno.lossin@proton.me>, Andreas Hindborg <a.hindborg@samsung.com>, 
	linux-kbuild@vger.kernel.org, rust-for-linux@vger.kernel.org, 
	linux-kernel@vger.kernel.org, patches@lists.linux.dev
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On Thu, Dec 14, 2023 at 11:23=E2=80=AFPM Miguel Ojeda <ojeda@kernel.org> wr=
ote:
>
> When setting up the Rust support via `rustup`, one may use an override
> in order to select the right version of the Rust toolchain.
>
> The current instructions at Documentation/rust/quick-start.rst assume
> one is using an in-tree kernel build (i.e. no `O=3D`) [1]. We would like
> to provide also the way to do so for `O=3D` builds, but ideally in a way
> that keeps the one-liner copy-pastable and without duplication [2].
>
> Thus provide a new Make target, `rustupoverride`, that sets it up for
> the user given their build options/variables.
>
> Link: https://lore.kernel.org/rust-for-linux/20231207084846.faset66xzuoyv=
dlg@vireshk-i7/ [1]
> Link: https://lore.kernel.org/rust-for-linux/CANiq72=3Dmvca8PXoxwzSao+QFb=
AHDCecSKCDtV+ffd+YgZNFaww@mail.gmail.com/ [2]
> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

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