linux-kernel - Re: [PATCH v3] kbuild, LLVMLinux: Supress warnings unless W=1-3

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Date:	Tue, 05 Aug 2014 15:42:41 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	behanw@...verseincode.com
CC:	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	dwmw2@...radead.org,
	Jan-Simon Möller <dl9pf@....de>,
	Mark Charlebois <charlebm@...il.com>, bp@...en8.de
Subject: Re: [PATCH v3] kbuild, LLVMLinux: Supress warnings unless W=1-3

On 2014-08-01 06:08, behanw@...verseincode.com wrote:
> From: Behan Webster <behanw@...verseincode.com>
> 
> clang has more warnings enabled by default. Turn them off unless W is set.
> This patch fixes a logic bug where warnings in clang were disabled when W was set.
> 
> Signed-off-by: Behan Webster <behanw@...verseincode.com>
> Signed-off-by: Jan-Simon Möller <dl9pf@....de>
> Signed-off-by: Mark Charlebois <charlebm@...il.com>
> Cc: mmarek@...e.cz
> Cc: bp@...en8.de
> ---
>  Makefile                   |  1 +
>  scripts/Makefile.extrawarn | 22 ++++++++++++----------
>  2 files changed, 13 insertions(+), 10 deletions(-)

OK, this looks better, I applied the patch to kbuild.git#kbuild.


> +KBUILD_CFLAGS += $(call cc-disable-warning, unknown-warning-option)

Do we have -W... options in the Makefiles that clang does not understand
and that are added unconditionally?

Thanks,
Michal

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