From: Borislav Petkov <bp@alien8.de>
To: Sam Ravnborg <sam@ravnborg.org>, Michal Marek <mmarek@suse.cz>
Cc: torvalds@linux-foundation.org, x86@kernel.org,
linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
linux-kbuild@vger.kernel.org, bp@amd64.org
Subject: Re: [PATCH -v4] kbuild: Add extra gcc checks
Date: Mon, 28 Feb 2011 19:24:40 +0100 [thread overview]
Message-ID: <20110228182440.GA12411@a1.tnic> (raw)
In-Reply-To: <20110221110322.GA9819@liondog.tnic>
On Mon, Feb 21, 2011 at 12:03:22PM +0100, Borislav Petkov wrote:
>
> Add a 'W=1' Makefile switch which adds additional checking per build
> object.
>
> The idea behind this option is targeted at developers who, in the
> process of writing their code, want to do the occasional
>
> make W=1 [target.o]
>
> and let gcc do more extensive code checking for them. Then, they
> could eyeball the output for valid gcc warnings about various
> bugs/discrepancies which are not reported during the normal build
> process.
>
> For more background information and a use case, read through this
> thread: http://marc.info/?l=kernel-janitors&m=129802065918147&w=2
>
> -v4: Enable this for gcc only. Also, check for options which are not
> supported by every gcc version we use to build the kernel. Adding those
> checks for _every_ option slows down the build noticeably so be sensible
> here and add it only when your gcc version chokes on a particular
> option.
>
> -v[2..3]: move to Makefile.build
>
> Cc: Michal Marek <mmarek@suse.cz>
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: linux-kbuild@vger.kernel.org
> Acked-by: Ingo Molnar <mingo@elte.hu>
> Signed-off-by: Borislav Petkov <bp@alien8.de>
Ping?
Michal, Sam,
any news here? FWIW, I've been build-testing amd64_edac.c with it and
have caught a bunch of buglets with it. IMHO, it really helps to enable
more extensive gcc checking in debugging builds.
Thanks.
--
Regards/Gruss,
Boris.
next prev parent reply other threads:[~2011-02-28 18:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-21 11:03 [PATCH -v4] kbuild: Add extra gcc checks Borislav Petkov
2011-02-28 18:24 ` Borislav Petkov [this message]
2011-02-28 18:38 ` Sam Ravnborg
2011-02-28 21:07 ` Arnd Bergmann
2011-02-28 21:31 ` Borislav Petkov
2011-03-01 11:35 ` Arnd Bergmann
2011-03-01 13:20 ` Américo Wang
2011-03-01 14:56 ` Borislav Petkov
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