linux-kernel - Re: problem with ccflags := -Werror in Makefiles when building with gcc 4.6.0

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Date:	Wed, 09 Mar 2011 09:22:50 -0800
From:	Joe Perches <joe@...ches.com>
To:	Douglas Mencken <dougmencken@...il.com>
Cc:	linux-kernel@...r.kernel.org, Borislav Petkov <bp@...en8.de>,
	Michal Marek <mmarek@...e.cz>, Sam Ravnborg <sam@...nborg.org>,
	Ingo Molnar <mingo@...e.hu>,
	linux-kbuild <linux-kbuild@...r.kernel.org>
Subject: Re: problem with ccflags := -Werror in Makefiles when building
 with gcc 4.6.0

On Wed, 2011-03-09 at 17:28 +0100, Douglas Mencken wrote:
> When building with gcc 4.6.0 with the new type of warnings introduced,
> -Wunused-but-set-variable, many directories with ccflags set to
> -Werror in Makefile fail to build.

After the kbuild W=<level> gets accepted,
it might be reasonable to add another W
level to make warnings fatal and remove
all -Werror entries from the various Makefiles.

See Borislav's patch
https://lkml.org/lkml/2011/3/1/76

and Ingo's idea
https://lkml.org/lkml/2011/3/9/186


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