During the built process, scummvm checks for fluidsynth:
Checking for libfluidsynth... yes
and if found, it links against it, but fluidsynth is not listed as a
dependency. This causes problems for binary packages (which is how I noticed).
Notice from "./configure --help":
--with-fluidsynth-prefix=DIR Prefix where libfluidsynth is installed
(optional)
--disable-fluidsynth disable fluidsynth MIDI driver [autodetect]
We definitely do not want to autodetect. I didn't see a midi use flag but this
feature should either be controlled with a use flag or forced on or off.