--- /dev/null
+if ENABLE_OLD_WEATHER
+WEATHER_DIR = Weather
+else
+WEATHER_DIR = WeatherCM
+endif
+
+if ENABLE_NETWORK_OLK
+NETWORK_DIRS = Network NetworkOLK
+else
+NETWORK_DIRS = Network
+endif
+
+SUBDIRS = \
+ Include \
+ Aircraft \
+ Airports \
+ Astro \
+ Autopilot \
+ Clouds \
+ Cockpit \
+ Controls \
+ FDM \
+ GUI \
+ Joystick \
+ $(NETWORK_DIRS) \
+ Objects \
+ Scenery \
+ Time \
+ $(WEATHER_DIR) \
+ Main