[oe] Using EXTERNALSRC in practice

[Jérémy Rosen]

On 20/06/2016 15:48, Ulf Samuelsson wrote:
> Den 2016-06-20 kl. 14:37, skrev Jérémy Rosen:
>>
>> On 20/06/2016 14:08, Ulf Samuelsson wrote:
>>> We have a meta-layer which builds the kernel.
>>>
>>> This contains among other things:
>>>
>>> FILESEXTRAPATHS_prepend_<machine> = "${THIS_DIR}/<machine>"
>>>
>>> SRC_URI = "git://<server>/<repo.git>;protocol=ssh;branch=<branch>"
>>> SRC_URI += "file://defconfig"
>>>
>>> PV = "...+git${SRCPV}"
>>> SRCREV = "<shaid>"
>>> ...
>>>
>>> Would like to have an option to build the kernel with external source.
>>> That option should be easy to enable/disable
>>>
>> [skip the rest]
>>
>> What you are describing here is very close to how the devtool works. 
>> I think it can deal with kernel packages in its latest iteration
>>
>> did you have a look at that tool ? does it satisfy your need ? if 
>> not, what would it need to do what you want...
>
> No, where can I find more information?
>
The yocto manual has quite a section on that tool

> The customer does not use the latest version of Yocto right now, so 
> that might be a problem,

depends on how old "not the latest" is... but if you can do a sandbox 
with the latest version, you can probably see how devtool works and 
manually do the same thing...
>
> so It would be good to have an example ".bbappend" to start with.
>
> BR
>
> Ulf
>
>