linux-kernel - Re: [PATCH 00/13] kbuild: refactoring after Clang LTO

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Message-ID: <CAK7LNARoxA875uynQHs-HpcfXtzFvuxkzSha9tquR2uV0Za10A@mail.gmail.com>
Date:   Wed, 25 Aug 2021 13:57:51 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Cc:     Sami Tolvanen <samitolvanen@...gle.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH 00/13] kbuild: refactoring after Clang LTO

On Thu, Aug 19, 2021 at 9:58 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
>
> The introduction of Clang LTO, the kbuild code became much
> uglier due to CONFIG_LTO_CLANG conditionals.
>
> It is painful to maintain the messed-up code, and to review
> code changed on top of that.
>
>
>
> Masahiro Yamada (13):
>   kbuild: move objtool_args back to scripts/Makefile.build
>   gen_compile_commands: extract compiler command from a series of
>     commands
>   kbuild: detect objtool changes correctly and remove .SECONDEXPANSION
>   kbuild: remove unused quiet_cmd_update_lto_symversions
>   kbuild: remove stale *.symversions
>   kbuild: merge vmlinux_link() between the ordinary link and Clang LTO
>   kbuild: do not remove 'linux' link in scripts/link-vmlinux.sh
>   kbuild: merge vmlinux_link() between ARCH=um and other architectures
>   kbuild: do not create built-in.a.symversions or lib.a.symversions
>   kbuild: build modules in the same way with/without Clang LTO
>   kbuild: always postpone CRC links for module versioning
>   kbuild: merge cmd_modversions_c and cmd_modversions_S
>   kbuild: merge cmd_ar_builtin and cmd_ar_module
>


Patch 01-08 applied.

I will take some time for the rest.


-- 
Best Regards
Masahiro Yamada