linux-kernel - Re: [PATCH] rust: Suppress searching builtin sysroot

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Message-ID: <CAH5fLgjFGTfWr-O9LPBtvwkwo5o=jYMByjqS+7gogGoYT4=x3g@mail.gmail.com>
Date:   Mon, 27 Nov 2023 14:58:25 +0100
From:   Alice Ryhl <aliceryhl@...gle.com>
To:     Matthew Maurer <mmaurer@...gle.com>
Cc:     Jamie.Cunliffe@....com, Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Masahiro Yamada <masahiroy@...nel.org>, will@...nel.org,
        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>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-kbuild@...r.kernel.org
Subject: Re: [PATCH] rust: Suppress searching builtin sysroot

On Tue, Oct 31, 2023 at 9:18 PM Matthew Maurer <mmaurer@...gle.com> wrote:
>
> By default, if Rust is passed `--target=foo` rather than a target.json
> file, it will infer a default sysroot if that component is installed. As
> the proposed aarch64 support uses `aarch64-unknown-none` rather than a
> target.json file, this is needed to prevent rustc from being confused
> between the custom kernel sysroot and the pre-installed one.
>
> Signed-off-by: Matthew Maurer <mmaurer@...gle.com>

I guess these are the only places where we need the sysroot parameter
because the other rustc invocations compile for the host target
instead?

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