Sven Joachim wrote:
> Perhaps
> Emacs' configure script should test for <alsa/asoundlib.h> first, and
> only try <asoundlib.h> if that fails?

Thanks for the suggestion. I looked into the history of this and the 
configure-time test apparently is for pre-1.0.0 alsa-lib, which Emacs no longer 
supports anyway. So I installed the attached obvious patch into master. Please 
give it a try, as I don't use alsa-lib.