linux-kernel - Re: [PATCH v3] kbuild: check the minimum compiler version in Kconfig

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Message-ID: <CANiq72mMnQBD6eVoNjfjiwz4TrQDz=DSh+gHen=grA3YqsYKmg@mail.gmail.com>
Date:   Thu, 14 Jan 2021 19:32:03 +0100
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Nathan Chancellor <natechancellor@...il.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Will Deacon <will@...nel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] kbuild: check the minimum compiler version in Kconfig

On Thu, Jan 14, 2021 at 7:08 PM Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> I unified the similar two scripts, gcc-version.sh and clang-version.sh
> into the new cc-version.sh. The old scripts invoked the compiler multiple
> times (3 times for gcc-version.sh, 4 times for clang-version.sh). I
> refactored the code so the new one invokes the compiler just once, and
> also tried my best to use shell-builtin commands where possible.

Tested v3 with GCC, Clang and an old GCC too:

$ scripts/cc-version.sh gcc-4.6.4
***
*** Compiler is too old.
***   Your GCC version:    4.6.4
***   Minimum GCC version: 4.9.0
***

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

Cheers,
Miguel