linux-kernel - Re: Linux 2.6.25-rc8

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Date:	Thu, 3 Apr 2008 20:18:30 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Josh Boyer <jwboyer@...il.com>
Cc:	Paul Mackerras <paulus@...ba.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	davej@...hat.com
Subject: Re: Linux 2.6.25-rc8

> 
> > Those defconfigs would be much smaller and change much less often if
> > they could be expressed as a delta from some other defconfig.  So we'd
> > end up with a small number of base defconfigs plus a set of board
> > defconfigs that would say effectively "use the options from that other
> > defconfig, plus turn this on and that off".
> 
> IIRC, Fedora builds their kernels using such a mechanism, though it's
> done in the RPM specfile with a perl script.  Maybe that's something to
> look at to start with.
kconfig allready allow you to override values simply by appending to
the end of the .config file.
So it is a matter of creating the proper stuff around to:
1) use it
2) make is simple to update defconfigs
   A simple extract delta between two config

I'm not up to do that at the moment - but it is doable.
And I would hate to see the defconfig disappear just because
they are so visible in Linus' dirstat.
	Sam
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