[OE-core] what is the value of 'BBPATH ?= ""' in layer.conf?

[Robert Yang]

On 11/22/2015 05:29 PM, Robert P. J. Day wrote:
> On Sun, 22 Nov 2015, Robert Yang wrote:
>
>>
>>
>> On 11/22/2015 05:10 PM, Robert P. J. Day wrote:
>>>
>>>     perusing some wind river layers, and in the layer.conf file here:
>>>
>>> https://github.com/WindRiver-OpenSourceLabs/wr-kernel/blob/LB21_7.0_RCPL0002/conf/layer.conf
>>>
>>> i see the opening snippet:
>>>
>>>     BBPATH ?= ""
>>>     # We have a conf and classes directory, add to BBPATH
>>>     BBPATH := "${LAYERDIR}:${BBPATH}"
>>>
>>> what is the purpose of that initial assignment
>>>
>>>     BBPATH ?= ""
>>
>> There would be a warning when BBPATH is null, but that had been fixed,
>> so we don't need it nowadays.
>>
>> // Robert
>
>    i thought as much, i just wanted to be sure. i am a rabid minimalist
> in that, if a line has no value, it should be removed, mostly to avoid
> confusing people like me. :-) i noticed at least a couple WR-OSL
> layers that had that construct, you can decide if you care enough
> about it to clean it up. thanks for the clarifiation.

Thanks, we have cleaned that up in new release.

// Robert

>
> rday
>