linux-kernel - Re: [PATCH 1/6] kbuild: specify output names separately for each emission type from rustc

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Date:   Sat, 7 Jan 2023 18:09:49 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>, Tom Rix <trix@...hat.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        llvm@...ts.linux.dev, rust-for-linux@...r.kernel.org
Subject: Re: [PATCH 1/6] kbuild: specify output names separately for each
 emission type from rustc

On Wed, Jan 4, 2023 at 5:45 AM Miguel Ojeda
<miguel.ojeda.sandonis@...il.com> wrote:
>
> On Sat, Dec 31, 2022 at 7:42 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
> >
> >   $ make -j$(nproc) samples/rust/rust_minimal.o samples/rust/rust_minimal.rsi \
> >                     samples/rust/rust_minimal.s samples/rust/rust_minimal.ll
>
> Yeah, we were testing the single targets, but not multiple at once, thanks!
>
> > +               --emit=dep-info=$(depfile) --emit=obj=$@ --emit=metadata=$(dir $@)$(patsubst %.o,lib%.rmeta,$(notdir $@)) \
>
> Perhaps a newline here to avoid the lengthy line?


OK, I will wrap it in v2.


>
> >  hostc_flags    = -Wp,-MMD,$(depfile) $(_hostc_flags)
> >  hostcxx_flags  = -Wp,-MMD,$(depfile) $(_hostcxx_flags)
> > -hostrust_flags = $(_hostrust_flags)
>
> This was originally meant to be consistent with C and C++ indeed, but
> if you prefer less variables, I guess it is fine, in which case,
> should we update the C/C++ side too (in another series)?


Yup, we could do this with less variables.
I will send a clean up.


> Reviewed-by: Miguel Ojeda <ojeda@...nel.org>
> Tested-by: Miguel Ojeda <ojeda@...nel.org>
>
> Cheers,
> Miguel



-- 
Best Regards
Masahiro Yamada