Source
--- configure.ac.orig 2016-08-19 06:18:02.000000000 -0700
+++ configure.ac 2016-09-05 10:20:10.000000000 -0700
if [[ "x$WANT_MACOSX_GUI" = "xyes" ]]; then
CPPFLAGS="$CPPFLAGS -I../MacOSX"
+ KEYCODES="keycodes"
LIBS="$LIBS -framework CoreAudio -framework AudioUnit -framework AudioToolbox"
EXTRASYSSRCS="$EXTRASYSSRCS ../MacOSX/Controller.mm"