Ok. I have ALSA 0.9.0beta12 but I get a bunch of errors when compiling
You'll notice that the asoundlib.h include is now in
<alsaprefix>/include/alsa/ instead of <alsaprefix>/include/sys/
if the configure script was supposed to filter out alsa 0.9.0 betas, it
should check the SND_LIB_EXTRA_VERSION define.