linux-kernel - Re: [PATCH 1/3] MIPS: Fix CONFIG_CPU_DADDI_WORKAROUNDS `modules

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Date:   Wed, 19 Jul 2023 13:34:27 +0200
From:   Philippe Mathieu-Daudé <philmd@...aro.org>
To:     "Maciej W. Rozycki" <macro@...am.me.uk>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     Jan-Benedict Glaw <jbglaw@...-owl.de>,
        Guillaume Tucker <guillaume.tucker@...labora.com>,
        Huacai Chen <chenhuacai@...ngson.cn>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] MIPS: Fix CONFIG_CPU_DADDI_WORKAROUNDS
 `modules_install' regression

On 18/7/23 16:37, Maciej W. Rozycki wrote:
> Remove a build-time check for the presence of the GCC `-msym32' option.
> This option has been there since GCC 4.1.0, which is below the minimum
> required as at commit 805b2e1d427a ("kbuild: include Makefile.compiler
> only when compiler is needed"), when an error message:
> 
> arch/mips/Makefile:306: *** CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32.  Stop.
> 
> started to trigger for the `modules_install' target with configurations
> such as `decstation_64_defconfig' that set CONFIG_CPU_DADDI_WORKAROUNDS,
> because said commit has made `cc-option-yn' an undefined function for
> non-build targets.
> 
> Reported-by: Jan-Benedict Glaw <jbglaw@...-owl.de>
> Signed-off-by: Maciej W. Rozycki <macro@...am.me.uk>
> Fixes: 805b2e1d427a ("kbuild: include Makefile.compiler only when compiler is needed")
> Cc: stable@...r.kernel.org # v5.13+
> ---
>   arch/mips/Makefile |    4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@...aro.org>