linux-kernel - Re: [PATCH 2/6] kbuild: rust_is_available: print docs reference

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Message-ID: <CANiq72mYHzHVk9s6Tf+vbG5ToChzCTBh0vX67s87P5sxbD-PVQ@mail.gmail.com>
Date:   Tue, 10 Jan 2023 13:28:25 +0100
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Finn Behrens <fin@...ntec.com>
Cc:     Miguel Ojeda <ojeda@...nel.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        linux-kbuild@...r.kernel.org,
        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,
        patches@...ts.linux.dev, Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>
Subject: Re: [PATCH 2/6] kbuild: rust_is_available: print docs reference

On Tue, Jan 10, 2023 at 11:16 AM Finn Behrens <fin@...ntec.com> wrote:
>
> As I always use my systems rustc/bindgen, I always get the warning, which already clutters the build output a bit. But I see why it is helpful, so not a fan, but this patch is reasonable.

Indeed, if one uses a different version, it may end up becoming too
annoying when running it during build -- it is something I worried
about when adding it back then in commit 11c0cf1e8c06 ("rust: run
rust-is-available on build") in our repository.

I think, for a while, until more people is accustomed to dealing with
Rust, it may be worth the pain for some of us in order to help to
catch bad setups, since otherwise users may not attempt to check with
the `rustavailable` target themselves.

In any case, of course, the "too new" warnings will go away when we
reach a stable version situation since they will not be needed anymore
(but we can also do it sooner than that, for the build step
especially).

Thanks for the review!

Cheers,
Miguel