On 16/05/13 16:11, Artem Bityutskiy wrote:
> On Thu, 2013-05-16 at 18:25 +0530, Viresh Kumar wrote:
>> On 16 May 2013 17:27, Artem Bityutskiy <dedekind1@gmail.com> wrote:
>>> On Thu, 2013-05-16 at 13:15 +0200, Wolfram Sang wrote:
>>>> Despite various architectures and platform dependencies, I managed to
>>>> compile
>>>> test 45 out of 57 modified files locally using heuristics and
>>>> defconfigs.
>>>> If somebody knows how to create a minimal .config with a certain
>>>> kconfig symbol
>>>> (and its dependencies) set, I'd love to hear about it.
>>>
>>> If you find this out, please, share!
>>
>> Are you guys looking for "make savedefconfig" ??
> 
> No. It is more like:
> 
> I have changed this strange driver.
> 
> I want to compile-test my changes.
> 
> I need a defconfig which would have this driver enabled. I also want to
> know <arch> for my "make ARCH=<arch>" command.

Not quite the same thing, but I sent this a while ago:

http://lkml.indiana.edu/hypermail/linux/kernel/1304.3/02847.html

My "softdepends" feature is probably not needed, as pointed out in the
thread, as the behavior can be implemented with the current Kconfig
language just fine.

I had a quick look at fbdev drivers, and some of them compile fine on
all (well, arm and x86) archs. But many do have real arch dependencies.

I think it'd be a good long term goal to make drivers arch-independent,
and add CONFIG_SHOW_ALL_DRIVERS or such, which would allow compiling
drivers that are not used on your arch, but still compile fine.

 Tomi