alsa/use-case.h in needed
require at least version 1.0.24 in configure.ac
prevents the following error at compile time:
CC libalsa_util_la-alsa-util.lo
In file included from modules/alsa/alsa-mixer.h:51,
from modules/alsa/alsa-util.h:36,
from modules/alsa/alsa-util.c:46:
modules/alsa/alsa-ucm.h:27:22: error: use-case.h: No such file or directory
In file included from modules/alsa/alsa-mixer.h:51,
from modules/alsa/alsa-util.h:36,
from modules/alsa/alsa-util.c:46:
modules/alsa/alsa-ucm.h:89: error: expected ‘)’ before ‘*’ token
modules/alsa/alsa-ucm.h:169: error: expected specifier-qualifier-list before ‘snd_use_case_mgr_t’
make[3]: *** [libalsa_util_la-alsa-util.lo] Error 1