Well, I searched through 96 weeks of archived alsa-devel postings to get to this one:
http://article.gmane.org/gmane.linux.alsa.devel/37120
(Which shows I am doing the right thing in any case.)
This post recommends this:
CFLAGS="-Os -m4 -ml" ./configure --prefix=/usr --host=sh4-unknown-linux-gnu --target=sh4-unknown-linux-gnu --build=i686-pc-linux-gnu
I admit to not using the additional cflags stuff before, but even if I use this:
CFLAGS="-Os -m4 -ml" ./configure --host=sh4-linux --prefix=/usr CC=/home/adrian/dreamy-linux/buildroot/build_sh4/staging_dir/bin/sh4-linux-gcc --disable-python --disable-rawmidi --enable-static --with-confdir=/home/adrian/dreamy-linux/buildroot/project_build_sh4/dreamcast/root/usr/share/alsa --disable-mixer --enable-static=yes --enable-shared=no --target=sh4-linux --build=i686-linux
Followed by:
make and make DESTDIR=/home/adrian/dreamy-linux/buildroot/project_build_sh4/dreamcast/root install
I still get this:
$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: AICA [AICA], device 0: AICA PCM [AICA PCM] Subdevices: 1/1 Subdevice #0: subdevice #0
Followed by:
$ aplay -L null Discard all samples (playback) or generate zero samples (capture)
$ aplay /aine-email.wav Playing WAVE '/aine-email.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono ALSA lib pcm_plug.c:773:(snd_pcm_plug_hw_refine_schange) Unable to find an usable access for '(null)' aplay: set_params:895: Access type not available
$ aplay -D hw:0,0 /aine-email.wav Playing WAVE '/aine-email.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono aplay: set_params:895: Access type not available
Just as before. Any clues?