linux-kernel - Re: [PATCH] kbuild: rust: avoid creating temporary files

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Date:   Sun, 23 Jul 2023 22:35:25 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:     Miguel Ojeda <ojeda@...nel.org>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Benno Lossin <benno.lossin@...ton.me>,
        Alice Ryhl <aliceryhl@...gle.com>,
        Andreas Hindborg <a.hindborg@...sung.com>,
        linux-kbuild@...r.kernel.org, rust-for-linux@...r.kernel.org,
        linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
        Raphael Nestler <raphael.nestler@...il.com>,
        Andrea Righi <andrea.righi@...onical.com>,
        stable@...r.kernel.org
Subject: Re: [PATCH] kbuild: rust: avoid creating temporary files

On Sun, Jul 23, 2023 at 2:05 PM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> On Sun, Jul 23, 2023 at 12:52 AM Miguel Ojeda
> <miguel.ojeda.sandonis@...il.com> wrote:
> >
> > On Thu, Jul 20, 2023 at 8:35 PM Masahiro Yamada <masahiroy@...nel.org> wrote:
> > >
> > > Maybe, the following was a breakage.
> > >
> > > commit 295d8398c67e314d99bb070f38883f83fe94a97a
> > > Author: Masahiro Yamada <masahiroy@...nel.org>
> > > Date:   Sat Jan 7 18:18:15 2023 +0900
> > >
> > >     kbuild: specify output names separately for each emission type from rustc
> > >
> > > Before that, rust_common_cmd had --out-dir.
> >
> > That's right, good catch!
> >
> > > BTW, do we also need to fix scripts/Makefile.host
> > > in case the external module Makefile creates host programs?
> >
> > Indeed, we need it too. [1] would fix it (tested it with a trivial
> > out-of-tree Rust hostprog).
> >
> > Do you want me to send it separately? i.e. to avoid losing the
> > `Tested-by`s etc. that we already got for this one, which is the
> > important one since that actually has users.
> >
> > The hostprogs fix is not really critical for stable, since it is
> > unlikely there are users at all (we just got the first in-tree real
> > user in the Rust+KUnit integration coming into 6.6), but I guess it
> > does not hurt for the same reason.
>
>
> Can you send v2 with the following squashed?
>
>
> I think it makes sense to fix both if we add
> Fixes: 295d8398c67e ("kbuild: specify output names separately for each
> emission type from rustc")


I dropped v1 for now,
expecting to get v2 soon.


-- 
Best Regards
Masahiro Yamada