[yocto] working my way through the kernel hands-on labs finally

[Bruce Ashfield]

On 13-04-08 12:02 PM, Robert P. J. Day wrote:
> On Mon, 8 Apr 2013, Bruce Ashfield wrote:
>
>> On 13-04-08 11:41 AM, Robert P. J. Day wrote:
>>>
>>>     finally have the time to work my way through the ELC 2013 hands on
>>> kernel labs described here:
>>>
>>> https://www.yoctoproject.org/tools-resources/presentations/working-kernel
>>>
>>> since i'll almost certainly use some of them in my next yocto course,
>>> so the occasional question for anyone who's already been down this
>>> road.  start with lab 1.
>>>
>>>     the doc mentions including the meta-yocto and meta-yocto-bsp layers
>>> -- are those strictly necessary? the layer.conf definition file for
>>> the lab1 layer doesn't list those layers as dependencies. what will
>>> happen if i leave them out? what's the policy on explicitly listing
>>> dependencies on those two layers in a new layer?
>>>
>>>     also, just doing a basic fetch for lab1 produces:
>>>
>>> ERROR: QA Issue:
>>> /home/rpjday/yocto/k_lab/layers/meta-lab1-qemux86/recipes-kernel/linux/linux_3.0.18.bb:
>>> Variable FILES is set as not being package specific, please fix this.
>>>
>>>     is that deliberate? something that will be resolved later in the
>>> lab as part of an exercise? just curious.
>>
>> Probably not deliberate, the kernel labs aren't about packaging.
>> Which branch are you using for your tests ? Even if it's an old
>> release branch, there may have been some QA backports between the
>> time the lab was done, and the time you are running it.
>
>    i'm using HEAD for everything, even though the labs dictate
> poky-danny-8.0.1; if anything breaks because of that, i'll make a note
> of it.

That's what I wondered. These were all done against 1.3, so the QA
warning (and other issues you'll see) are very likely caused by this
skew. For the next round of conferences, there are plans to update
them to use 1.4 and get required cleanup.

Bruce

>
> rday
>