[LEDE-DEV] Multi-Profile selection support

[Rafał Miłecki]

On 23 May 2016 at 13:59, Felix Fietkau <nbd at nbd.name> wrote:
> On 2016-05-23 13:56, Rafał Miłecki wrote:
>> On 23 May 2016 at 13:38, Felix Fietkau <nbd at nbd.name> wrote:
>>> after a long delay, I finally got around to looking into multi profile
>>> selection again. After reviewing your code and thinking about it some
>>> more, I decided to go with a slightly different approach from the one
>>> that you took.
>>>
>>> I'm working towards not only being able to build an image with support
>>> for a specific set of devices, but also being able to optionally build
>>> multiple images at once with the per-image rootfs being affected by the
>>> device profile as well.
>>>
>>> This can currently only work properly with the new image building code
>>> along with having the device profile data specified in the Device
>>> section, so I limited multi-profile selection to that.
>>>
>>> As a next step, I'm going to add some wrapper code to allow the legacy
>>> image building code to be incrementally converted as well without having
>>> to adjust everything to the new Build/* chunks right away.
>>
>> Is it worth it? If there are some targets really wanting this feature
>> I guess we could convert them to the new Device/* building system. My
>> knowledge is surely limited but I can try to help with that. I somehow
>> managed to convert brcm47xx and improve bcm53xx.
> The multi-profile stuff is something we want to have for all targets, so
> that we can avoid hackish scripts involving the image builder and
> multiple build passes.
> Converting ar71xx is going to be a lot of work, especially testing all
> those different devices - unless you can find a way to automate that by
> proving that the output stays the same with the old and the new code,
> but I don't know if our reproducible build support is quite there yet.

I don't have experience with ar71xx, but when I was converting
brcm47xx I simply used sha1sum on resulting images. We don't expect
any change in final images from the switch to the new building system,
do we?

-- 
Rafał