[OE-core] [PATCH] ffmpeg: fix build when DISTRO_FEATURES doesn't contain x11

[alexander.kanavin at linux.intel.com]

>> I'd call that a bug, and should be simple to resolve (pass expand=True
>> when
>> fetching getVarFlags in the PACKAGECONFIG handling code).
>>
>> Ross
>
> Feel free to submit a patch to handle the PACKAGECONFIG expansion and
> then I can update the fix.

I think you need to solve this in a different way altogether. Write a
patch for the upstream code that turns a floating, implicit xv dependency
into something that can be explicitly turned on and off, and then add a
PACKAGECONFIG option for it to the recipe.

Alex