Re: make oldnoconfig fix?

[Rob Landley]

On 11/11/2013 12:55:37 PM, David Cohen wrote:
> On 11/11/2013 10:13 AM, Yann E. MORIN wrote:
> > David, All,
>
> Hi Yann,
>
> > On 2013-11-11 10:11 -0800, David Cohen spake thusly:
> > > Is there a plan to fix 'make oldnoconfig' option?
> > > I currently have need to it :)
> > > I've tracked a thread fixing 'make olddefconfig' where 'oldnoconfig'
> > > option is reported as a known bug, right?
> >
> > Sorry, I don't understand what your problem is.
>
> Maybe I assumed it was more 'known' then it actually is :)
>
> > Care to explain in details what problem you have:
> >    - what you start with
> >    - what you do
> >    - what you get
> >    - what you expected
>
> The bug with 'oldnoconfig' is: 'make oldnoconfig' is just an alias to
> 'olddefconfig'. Any non-existent config is defined with its default
> value instead of 'N'.
>
> I work with embedded platforms. I need to maintain a set of defconfigs
> for different products (customers some times want tailored configs, so
> creating a generic one isn't an option always).

make allnoconfig KCONFIG_ALLCONFIG=oldconfigfile

I use this trick in  
http://landley.net/aboriginal/FAQ.html#dev_miniconfig

And yes, I submitted it upstream a couple times last decade, with  
documentation and everything:

  https://lwn.net/Articles/160497/
  https://lwn.net/Articles/161086/
  http://lkml.indiana.edu/hypermail/linux/kernel/0607.0/1805.html

Rob--
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