[OE-core] Recipe versions and layer confusion

[Mike Looijmans]

On 06-10-17 00:10, Andre McCurdy wrote:
> On Thu, Oct 5, 2017 at 2:44 PM, Leonardo Sandoval
> <leonardo.sandoval.gonzalez at linux.intel.com> wrote:
>> On Thu, 5 Oct 2017 10:19:18 -0500
>> Leonardo Sandoval <leonardo.sandoval.gonzalez at linux.intel.com> wrote:
>>
>>> On Thu, 5 Oct 2017 16:49:28 +0200
>>> Mike Looijmans <mike.looijmans at topic.nl> wrote:
>>>
>>>> I'm confused.
>>>>
>>>> Layer "meta-xilinx" defines:
>>>>
>>>> recipes-bsp/arm-trusted-firmware/arm-trusted-firmware_2017.1.bb
>>>>
>>>> This recipe is too old for my liking, so I made a newer one in "meta-topic"
>>>>
>>>> recipes-bsp/arm-trusted-firmware/arm-trusted-firmware_2017.3.bb
>>>>
>>>>
>>>> Much to my surprise, when I build, OE picks the 2017.1 version and not the
>>>> 2017.3 version.
>>>>
>>>> bitbake-layers show-layers reveils:
>>>> ..
>>>> meta-xilinx           /home/mike/projects/zynq-platform/meta-xilinx  5
>>>> meta-topic            /home/mike/projects/zynq-platform/meta-topic  6
>>>> ..
>>>>
>>>> so that means that my meta-topic should win even if my PV were lower, right?
> 
> Yes. The comments in bitbake/lib/bb/providers.py -> findBestProvider()
> explain the process pretty well:
> 
>    If there is a PREFERRED_VERSION, find the highest-priority bbfile
>    providing that version.  If not, find the latest version provided by
>    an bbfile in the highest-priority set.
> 
> The only caveat is that if PREFERRED_VERSION contains a wildcard (%)
> and matches more than one available version then all bets are off and
> results may be unpredictable. It's up to the user to ensure that
> doesn't happen.
> 
> Note that looking at the meta-xilinx recipe it seems that PV is set
> manually and doesn't follow the recipe name, so depending on how you
> set PV in your new recipe, it may not be completely obvious which
> recipe is actually being used?
> 
>    https://github.com/Xilinx/meta-xilinx/blob/master/recipes-bsp/arm-trusted-firmware/arm-trusted-firmware_2017.1.bb
> 

Yeah, that turned out to be the problem. The recipe is versioned as 
"2017.1" but that is not the version it will actually build.

"bitbake-layers show-recipes arm-trusted-firmware" reveiled the true 
versions, as Paul suggested, and that explained the strange choices.

-- 
Mike Looijmans


Kind regards,

Mike Looijmans
System Expert

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