linux-kernel - Re: [PATCH v7 21/25] Kbuild: add Rust support

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Date:   Sat, 16 Jul 2022 17:21:59 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Miguel Ojeda <ojeda@...nel.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        rust-for-linux@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Finn Behrens <me@...enk.de>,
        Adam Bratschi-Kaye <ark.email@...il.com>,
        Wedson Almeida Filho <wedsonaf@...gle.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Sven Van Asbroeck <thesven73@...il.com>,
        Gary Guo <gary@...yguo.net>,
        Boris-Chengbiao Zhou <bobo1239@....de>,
        Boqun Feng <boqun.feng@...il.com>,
        Douglas Su <d0u9.su@...look.com>,
        Dariusz Sosnowski <dsosnowski@...snowski.pl>,
        Antonio Terceiro <antonio.terceiro@...aro.org>,
        Daniel Xu <dxu@...uu.xyz>, Miguel Cano <macanroj@...il.com>,
        David Gow <davidgow@...gle.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Johannes Berg <johannes@...solutions.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        X86 ML <x86@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        "open list:SIFIVE DRIVERS" <linux-riscv@...ts.infradead.org>,
        linux-um@...ts.infradead.org
Subject: Re: [PATCH v7 21/25] Kbuild: add Rust support

On Mon, May 23, 2022 at 11:04 AM Miguel Ojeda <ojeda@...nel.org> wrote:
>
> Having all the new files in place, we now enable Rust support
> in the build system, including `Kconfig` entries related to Rust,
> the Rust configuration printer, the target specification
> generation script, the version detection script and a few
> other bits.
>
> Co-developed-by: Alex Gaynor <alex.gaynor@...il.com>
> Signed-off-by: Alex Gaynor <alex.gaynor@...il.com>
> Co-developed-by: Finn Behrens <me@...enk.de>
> Signed-off-by: Finn Behrens <me@...enk.de>
> Co-developed-by: Adam Bratschi-Kaye <ark.email@...il.com>
> Signed-off-by: Adam Bratschi-Kaye <ark.email@...il.com>
> Co-developed-by: Wedson Almeida Filho <wedsonaf@...gle.com>
> Signed-off-by: Wedson Almeida Filho <wedsonaf@...gle.com>
> Co-developed-by: Michael Ellerman <mpe@...erman.id.au>
> Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
> Co-developed-by: Sven Van Asbroeck <thesven73@...il.com>
> Signed-off-by: Sven Van Asbroeck <thesven73@...il.com>
> Co-developed-by: Gary Guo <gary@...yguo.net>
> Signed-off-by: Gary Guo <gary@...yguo.net>
> Co-developed-by: Boris-Chengbiao Zhou <bobo1239@....de>
> Signed-off-by: Boris-Chengbiao Zhou <bobo1239@....de>
> Co-developed-by: Boqun Feng <boqun.feng@...il.com>
> Signed-off-by: Boqun Feng <boqun.feng@...il.com>
> Co-developed-by: Douglas Su <d0u9.su@...look.com>
> Signed-off-by: Douglas Su <d0u9.su@...look.com>
> Co-developed-by: Dariusz Sosnowski <dsosnowski@...snowski.pl>
> Signed-off-by: Dariusz Sosnowski <dsosnowski@...snowski.pl>
> Co-developed-by: Antonio Terceiro <antonio.terceiro@...aro.org>
> Signed-off-by: Antonio Terceiro <antonio.terceiro@...aro.org>
> Co-developed-by: Daniel Xu <dxu@...uu.xyz>
> Signed-off-by: Daniel Xu <dxu@...uu.xyz>
> Co-developed-by: Miguel Cano <macanroj@...il.com>
> Signed-off-by: Miguel Cano <macanroj@...il.com>
> Co-developed-by: David Gow <davidgow@...gle.com>
> Signed-off-by: David Gow <davidgow@...gle.com>
> Signed-off-by: Miguel Ojeda <ojeda@...nel.org>
> ---





> +# Rust targets
> +# ---------------------------------------------------------------------------
> +
> +# "Is Rust available?" target
> +PHONY += rustavailable
> +rustavailable:
> +       $(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust-is-available.sh -v && echo >&2 "Rust is available!"
> +

Is it intentional to print the successful message to stderr?



-- 
Best Regards
Masahiro Yamada