[OE-core] inheirt multi bbclass using variable

[McClintock Matthew-B29882]

On Sun, Dec 11, 2011 at 6:10 PM, Chris Larson <clarson at kergoth.com> wrote:
>> There are some issues with inherit. I've seen a similar issue with:
>>
>> IMAGE_EXTRA_CLASSES = ""
>> inherit ${IMAGE_EXTRA_CLASSES}
>>
>> ERROR: Could not inherit file classes/.bbclass
>
> To be fair, in this case, it's doing exactly what you told it to do --
> inherit an empty string.

To clarify, my case was more like this:

IMAGE_EXTRA_CLASSES = "${SOME_CFG_VAR}"
inherit some_class.bbclass ${IMAGE_EXTRA_CLASSES}

-M