simgear/math/Makefile \
simgear/metar/Makefile \
simgear/misc/Makefile \
+ simgear/props/Makefile \
simgear/route/Makefile \
+ simgear/scene/Makefile \
+ simgear/scene/material/Makefile \
+ simgear/scene/model/Makefile \
+ simgear/scene/tgdb/Makefile \
simgear/screen/Makefile \
simgear/serial/Makefile \
simgear/sky/Makefile \
simgear/sky/clouds3d/Makefile \
+ simgear/sound/Makefile \
simgear/threads/Makefile \
simgear/timing/Makefile \
simgear/xgl/Makefile \