linux-kernel - Re: [PATCH 2/6] kbuild: rust: make command for `RUSTC_VERSION

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Message-ID: <CANiq72kXNCww6oHKNiPr-mGq3gQsH-kUbK-C9B_3bY-ozkiznA@mail.gmail.com>
Date: Sat, 10 Aug 2024 16:45:11 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Björn Roy Baron <bjorn3_gh@...tonmail.com>
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Wedson Almeida Filho <wedsonaf@...il.com>, Masahiro Yamada <masahiroy@...nel.org>, 
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...sung.com>, 
	Alice Ryhl <aliceryhl@...gle.com>, rust-for-linux@...r.kernel.org, 
	Nathan Chancellor <nathan@...nel.org>, Nicolas Schier <nicolas@...sle.eu>, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org, patches@...ts.linux.dev
Subject: Re: [PATCH 2/6] kbuild: rust: make command for `RUSTC_VERSION_TEXT`
 closer to the `CC` one

On Sat, Aug 10, 2024 at 3:44 PM Björn Roy Baron
<bjorn3_gh@...tonmail.com> wrote:
>
> Cargo depends on the rustc version string not getting localized. Or to be precise it depends on the version string being fixed for a given rustc version, which would not be the case if the value of LC_ALL could change the version string. If the version string changes, cargo will rebuild everything from scratch. There is also not really anything to localize in the non-verbose version string. I guess setting LC_ALL doesn't hurt either though.

Thanks Björn -- yeah, I agree it works either way (also for `head` as
Masahiro mentioned).

I made this commit to make it as close as possible to the C one, since
in the next patch it gets moved to another place where both commands
go together.

It is reasonable to argue that it makes it more complex and slower, so
I am happy dropping it.

Cheers,
Miguel