include(FlightGearComponent) set(SOURCES atmosphere.cxx environment.cxx environment_ctrl.cxx environment_mgr.cxx ephemeris.cxx fgclouds.cxx fgmetar.cxx fgwind.cxx metarairportfilter.cxx metarproperties.cxx precipitation_mgr.cxx realwx_ctrl.cxx ridge_lift.cxx terrainsampler.cxx presets.cxx gravity.cxx ) flightgear_component(Environment "${SOURCES}")