[RFC PATCH] Kconfig: Enable Kconfig fragments to be used for defconfig

Grant Likely grant.likely at secretlab.ca
Sat Jul 17 03:57:55 EST 2010

On Fri, Jul 16, 2010 at 10:03 AM, Catalin Marinas
<catalin.marinas at arm.com> wrote:
> On Wed, 2010-07-14 at 00:04 +0100, Grant Likely wrote:
>> - It still doesn't resolve dependencies.  A solver would help with this.
>>   For the time being I work around the problem by running the generated
>>   config through 'oldconfig' and looking for differences.  If the files
>>   differ (ignoring comments and generateconfig_* options) after oldconfig,
>>   then the <board>_defconfig target returns a failure.  (but leaves the
>>   new .config intact so the user can resolve it with menuconfig).  This
>>   way at least the user is told when a Kconfig fragment is invalid.
> It's not a solver but I'm pushing a patch to warn on selecting symbols
> with unmet dependencies so that you can select further symbols (manual
> solving). The patch is in linux-next but you also can grab it from:
> http://git.kernel.org/?p=linux/kernel/git/cmarinas/linux-2.6-cm.git;a=commitdiff_plain;h=5d87db2d2a332784bbf2b1ec3e141486f4d41d6f

sfr and I were talking about your patch the other day.  Just warning
on incomplete dependencies is enough to make it actually workable for
me (without my ugly post-processing step).  I was very happy to hear
that it is in linux-next.

Last missing piece is being able to do "select FOO = n", which Stephen
is currently working on.


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