linux-kernel - Re: [PATCH] kbuild: Add extra gcc checks

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Message-ID: <20110220175709.GA5178@merkur.ravnborg.org>
Date:	Sun, 20 Feb 2011 18:57:09 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Borislav Petkov <bp@...en8.de>
Cc:	Michal Marek <mmarek@...e.cz>, torvalds@...ux-foundation.org,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>, linux-kbuild@...r.kernel.org
Subject: Re: [PATCH] kbuild: Add extra gcc checks

On Sun, Feb 20, 2011 at 05:35:10PM +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/?i=20110218091716.GA4384@bicker
> 
> Cc: Ingo Molnar <mingo@...e.hu>
> Cc: Michal Marek <mmarek@...e.cz>
> Cc: linux-kbuild@...r.kernel.org
> Signed-off-by: Borislav Petkov <bp@...en8.de>
> ---
>  Makefile |   31 +++++++++++++++++++++++++++++++
>  1 files changed, 31 insertions(+), 0 deletions(-)

I like the idea.
But can we avoid polluting the top-level Makefile?
That file is full of unreadable stuff, and adding more
is not good.

Makefile.lib or Makefile.build seems like a better place for this.

	Sam
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