[Buildroot] [PATCH v1 0/2] Checking whether a certain CONFIG_* is set

Yann E. MORIN yann.morin.1998 at free.fr
Wed Aug 19 19:21:57 UTC 2015


Thomas, All,

On 2015-08-19 21:08 +0200, Thomas Petazzoni spake thusly:
> On Wed, 19 Aug 2015 21:05:34 +0200, Yann E. MORIN wrote:
[--SNIP--]
> > Now, there are two questions:
> > 
> >   - will we need to _check_ for any arbitrary kernel option to be set,
> >     and offer packages a simple mean to do so?
> > 
> >   - will we need to _force_ (on or off) any other kernel option, and
> >     offer packages a simple mean to do so?
> 
> We already do your second item.

No, we are not allowing any random package to set kernel options.

We do have infra for packages to tweak their *own* options, not those
of other packages (and history has proved it was not doable, I should
know, I tried and failed miserably with the lzo stuff).

> In general, I'd like to keep the handling of the kernel configuration
> to be as minimal as possible. Otherwise, we'll quickly enter a
> situation where we need to enable different kernel options depending on
> the kernel version. It can quickly become a real nightmare. Buildroot
> has always been about the user knowing what (s)he is doing, including
> in terms of making sure that the kernel configuration matches what is
> done in userspace.

I do fully agree with you on this position. Tweaking the kernel options
is a real hornet's nest...

Regards,
Yann E. MORIN.

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