linux-kernel - Re: [PATCH 2/4] kbuild: collect minimum tool versions into scripts/tool-version.sh

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Date:   Thu, 4 Mar 2021 17:10:02 -0500 (EST)
From:   Nicolas Pitre <nico@...xnic.net>
To:     Masahiro Yamada <masahiroy@...nel.org>
cc:     linux-kbuild@...r.kernel.org, clang-built-linux@...glegroups.com,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nathan Chancellor <nathan@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] kbuild: collect minimum tool versions into
 scripts/tool-version.sh

On Thu, 4 Mar 2021, Masahiro Yamada wrote:

> The kernel build uses various tools, many of which are provided by the
> same software suite, for example, LLVM and Binutils.
> 
> When we raise the minimal version of Clang/LLVM, we need to update
> clang_min_version in scripts/cc-version.sh and also lld_min_version in
> scripts/ld-version.sh.
> 
> In fact, Kbuild can handle CC=clang and LD=ld.lld independently, and we
> could manage their minimal version separately, but it does not make
> much sense.
> 
> Make scripts/tool-version.sh a central place of minimum tool versions
> so that we do not need to touch multiple files.

It would be better and self-explanatory if a script that provides the 
minimum version of a tool was actually called ... min_tool-version.sh or 
the like. Otherwise one might think it would give e.g. the current 
version of installed tools.


Nicolas