linux-kernel - Re: [PATCH 1/3] [v3] Kbuild: move to -std=gnu11

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Date:   Sun, 6 Mar 2022 16:31:24 +0100
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Marco Elver <elver@...gle.com>,
        Jani Nikula <jani.nikula@...el.com>,
        David Sterba <dsterba@...e.com>, Alex Shi <alexs@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Miguel Ojeda <ojeda@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-kbuild@...r.kernel.org, llvm@...ts.linux.dev,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] [v3] Kbuild: move to -std=gnu11

On Fri, Mar 4, 2022 at 5:25 PM Sedat Dilek <sedat.dilek@...il.com> wrote:
[ ... ]
> When I saw the first patches in this area, I was thinking what about
> the tools/ build-system?
> This ECO system has its own rules.
>

My other goal was to build perf with my selfmade or distro LLVM/Clang
and -std=gnu11.

I was able to do so:

$ git log --oneline --no-merges v5.17-rc6..for-5.17/tools-std_gnu11-dileks-v2
2d99b1cfa897 (for-5.17/tools-std_gnu11-dileks-v2) perf: Use -std=gnu11
c345a183c4ef tools: libtraceevent: Use -std=gnu11
26f77082f233 tools: libsubcmd: Use -std=gnu11
aaba58ec81c8 tools: libbpf: Use -std=gnu11
ffc800af3be4 tools: libapi: Use -std=gnu11

For perf/libperl-support I needed an extra patch:

$ git log --oneline --no-merges
v5.17-rc6..for-5.17/perf-libperl_support-clang-dileks
316a1917ec05 (for-5.17/perf-libperl_support-clang-dileks) perf: Fix
libperl support with clang and perl v5.34

For details see [1].

I can send the patches if someone wants them.

[1] https://marc.info/?t=164646683300002&r=1&w=2