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Date: Wed, 21 May 2008 17:38:32 -0400
From: Andres Salomon <dilinger@queued.net>
Subject: Re: Additional kconfig targets (cloneconfig, nonint_oldconfig etc)
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To: Dave Jones <davej@codemonkey.org.uk>
Cc: Sam Ravnborg <sam@ravnborg.org>, linux-kbuild <linux-kbuild@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>, Roland McGrath <roland@redhat.com>, Roman Zippel <zippel@linux-m68k.org>

On Wed, 21 May 2008 17:11:39 -0400
Dave Jones <davej@codemonkey.org.uk> wrote:

> On Wed, May 21, 2008 at 04:47:03PM -0400, Andres Salomon wrote:
> 
>  > > 3) Implement newsymbolsconfig (any better name?)
>  > >    Shall list all new symbols and shall not write
>  > >    any config
>  > 
>  > I'm not sure I see the point of #3.
> 
> It's something we've had in Fedora kernels forever, because
> when rebasing to a new upstream version the process becomes
> 
> make newsymbolsconfig
> take list of symbols, and make decisions on them
> make oldconfig
> 
>

Ah, I see.  My process has always been:


cp arch/x86/configs/foo_defconfig .config
make oldconfig
make obvious decisions about new symbols, choose defaults if unknown
diff -u arch/x86/configs/foo_defconfig .config
figure out if any decisions or defaults are incorrect, change accordingly
make oldconfig (more decisions if there are new symbols exposed)
cp .config arch/x86/configs/foo_defconfig && commit


> without it, the process would be..
> 
> make oldconfig
> note new symbol, make decision
> make oldconfig
> note a 2nd new symbol, make decision
> make oldconfig
> note a 3rd new symbol..
> make oldconfig..
> you get the idea.
> 
> The way we have it isn't perfect, (adding a new symbol may unhide
> another set of new symbols), but it reduces the number of iterations
> needed dramatically.
> 
> 	Dave
> 

My build has broken again, which is why I'm inquiring about the status
of this; I'm not going to bother fixing it if my patches are never going
to end up upstream..