[OE-core] static busybox?

[Mark Hatle]

On 8/1/12 11:21 AM, Stuart Yoder wrote:
> On Tue, Jul 31, 2012 at 3:07 PM, Bruce Ashfield
> <bruce.ashfield at gmail.com> wrote:
>> On Tue, Jul 31, 2012 at 3:59 PM, Mark Hatle <mark.hatle at windriver.com> wrote:
>>> On 7/31/12 1:14 PM, Stuart Yoder wrote:
>>>>
>>>> We are doing some work with LXC (containers) and one of the templates
>>>> is for busybox.  For LXC, the busybox package needs to be built statically
>>>> and
>>>> there is a config option for this.
>>>>
>>>> A couple possible approaches:
>>>>
>>>>      -create a new 'busybox_static' recipe that the lxc package
>>>>       depends on that turns on the needed build options.   Pretty
>>>>       straightforward, but now there are 2 variants of the busybox
>>>>       package.
>>>>
>>>>      -somehow propagate some configuration options through to
>>>>       the standard busybox recipe so it turns on the config
>>>>       option to build things statically.   Not sure how to
>>>>       do this, and seems like it could get pretty messy.
>>>>
>>>> Any thoughts?
>>>
>>>
>>> We've been talking about this as well..  I'm currently of the opinion that
>>> the kernel's config fragement processing be added to busybox.  This way
>>> someone can simply add a configuration fragment via a bbappend, or other
>>> approach and it'll pick it up.   That same can be used to specify how to
>>> enable other optional pieces of busybox.
>>
>> merge_config.pl can be yanked out of the kernel source tree (it's upstream) and
>> packaged as something for use by busy box.
>>
>> I wouldn't recommend all the scaffolding that the kernel has (it's
>> overkill, since
>> there are more configs, patches and git manipulations in play for the
>> kernel), but a\
>> simple scheme to collect the fragments from the SRC_URI and fire them through
>> merge_config.pl would be a pretty simple python routine.
>
> So how would this work from the user's point of view?   I somehow
> need to get busybox's CONFIG_STATIC config option set.   Does the lxc
> recipe somehow
> specify this?   Or does the lxc recipe reference a busybox-static
> dependency that sets the option?

You would be able to add a .bbappend that would have a configuration fragment in 
it.  This fragment would be added to the busybox configuration to override any 
built in items.

So you'd need to simply have a file that says:

CONFIG_STATIC = y

--Mark

> Stuart
>
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