[OE-core] Qemu-native requires alsa-libs-native

[Richard Purdie]

On Mon, 2011-03-21 at 11:44 +0800, Zhai, Edwin wrote:
> Koen,
> We enabled alsa in configure for the feature of receiving sound from 
> guest. It is assumed that audio system on host is already enabled.
> 
> I'm not sure if we need add alsa native, given that they are host 
> specific. Besides alsa, we also need sound card driver on host, which is 
> beyond the scope of our build system.
> Maybe, we can check alsa lib first, and enabled "--audio-drv-list=alsa" 
> after finding it. Or we can document alsa as build prerequisite?

If we need a dependency, it needs to either be listed in ASSUME_PROVIDED
or built. In this case we can general the needed alsa library easily so
I've merged Koen's patches.

Cheers,

Richard