[OE-core] static busybox?
Darren Hart
dvhart at linux.intel.com
Wed Aug 1 16:49:48 UTC 2012
On 08/01/2012 09:36 AM, Mark Hatle wrote:
> 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
Exactly.
And merge_config is a .sh, no perl required :-)
--
Darren Hart
Intel Open Source Technology Center
Yocto Project - Technical Lead - Linux Kernel
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