what do you want to know?
Ahem, everything? :-) ;-) :-)
recompile with DEBUG_ENABLED defined at the top of engine.c and then
if necessary client.c as well.
There is a missing ";" in line 544 of libjack/client.c that triggers a
build error if debugging is enabled.
Correct line is:
client->control->pid = getpid() ;
-- Fernando