linux-kernel - Re: [GIT] kbuild: kconfig changes

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Date:	Thu, 5 Aug 2010 19:08:52 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"Justin P. Mattock" <justinmattock@...il.com>
Cc:	Michal Marek <mmarek@...e.cz>, JBeulich@...ell.com,
	aris@...hat.com, catalin.marinas@....com, jacmet@...site.dk,
	lizf@...fujitsu.com, sam@...nborg.org, ulfalizer.lkml@...il.com,
	zippel@...ux-m68k.org, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [GIT] kbuild: kconfig changes

On Thu, Aug 5, 2010 at 6:27 PM, Justin P. Mattock
<justinmattock@...il.com> wrote:
>
> With what I submitted I did not test make oldconfig, only make menuconfig
> due to gcc 4.6.0 giving me a slew of warnings.
> From looking at make oldconfig I do see a more detailed explanation of what
> each option is(last I remember it was more of a line with y/n)but then again
> you could be seeing something completly different.

Just test what I described:  do a "make oldconfig" (do it twice, if
the first one needs to actually get some input). Do it on 2.6.35, and
then on the current tree. Look at the _huge_ difference in output.

> Now if this is with what I submitted then I'll have a look at it and see if I can get this fixed.

I just did a quick git bisect. It's introduced by commit 4062f1a4c030
("kconfig: use long options in conf") by Sam Ravnborg. Apparently that
thing is totally buggy, and doesn't just change the option names, but
actively breaks them.

                 Linus
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