[Bug 39165] dlls/xaudio2_7 fails to compile (unconditional dependency on OpenAL)

https://bugs.winehq.org/show_bug.cgi?id=39165

--- Comment #10 from Dmitry Timoshkov  ---
(In reply to Andrew Eikum from comment #9)
> Created attachment 52199 [details]
> Fix xaudio build
>
> Dmitry, I think this will fix it by disabling xaudio2_7 if openal-soft is
> not found. Please test (don't forget to clean the tree, run autoconf, etc).
>
> I'm not an autoconf expert, so review is welcome.

Seems to work, thanks.

Is it possible to use standard openal API instead of openal-soft, or even
implement xaudio on top of direct sound API? How many distributions provide
openal-soft in addition to (or instead of) plain openal?