C* Music Player

Hi, i wish to build your player under windows with msys+mingw. I've got
many of the packages needed by cmus (i've built pdcurses instead of
ncurses) and i see i can setup configure with either CONFIG_WAVEOUT or
latest libao (CONFIG_AO) which supports audio output under windows, so i
feel close to my target.
But your configure script is a bit complex to me.
It checks twice for faad.h, why?
Further it always stops after checking for <sys/soundcard.h> and
<sys/audioio.h>; i don't have them since i'm on a windows box but cmus
doesn't need them since i want to use different software for audio output
(and it already checked libao on my system).
The most important question is: why is configure not able to write a
config.log which i can read everything it checks in? This way it could be
easier to fix what i am missing.
Thank you
Elio