with Link I setup simulation. in steps specific branch of ardupilot cloned. how to update to last version Copter-3.4.6 releases and so..
for example I update ArduCopter and library folder with last ardupilot releases, in "../Tools/autotest/sim_vehicle.sh -j 4 -f Gazebo" occur some error:
make: *** [/tmp/ArduCopter.build/libraries/AP_Common/Location.o] Error 1
make: *** Waiting for unfinished jobs....
make: *** [/tmp/ArduCopter.build/libraries/GCS_MAVLink/GCS_Common.o] Error 1
make: *** [/tmp/ArduCopter.build/libraries/AP_AdvancedFailsafe/AP_AdvancedFailsafe.o] Error 1
make: *** [/tmp/ArduCopter.build/libraries/AP_Param/AP_Param.o] Error 1
../Tools/autotest/sim_vehicle.sh: Build failed
What is the certain way to update software ؟