I did a git pull, then built it - and this is what I get:
andre@andre-OptiPlex-990:~/Arduino/ardupilot/ArduCopter$ make
building /tmp/ArduCopter.build/ArduCopter.cpp
%% ArduCopter.cpp
%% ArduCopter.o
autogenerated:54:18: warning: 'int16_t get_heli_rate_roll(int32_t)' declared 'static' but never defined [-Wunused-function]
autogenerated:55:18: warning: 'int16_t get_heli_rate_pitch(int32_t)' declared 'static' but never defined [-Wunused-function]
autogenerated:56:18: warning: 'int16_t get_heli_rate_yaw(int32_t)' declared 'static' but never defined [-Wunused-function]
/home/andre/Arduino/ardupilot/ArduCopter/GCS_Mavlink.pde:275:22: warning: 'void send_simstate(mavlink_channel_t)' defined but not used [-Wunused-function]
/home/andre/Arduino/ardupilot/ArduCopter/Log.pde:573:13: warning: 'void Log_Write_Data(uint8_t, uint16_t)' defined but not used [-Wunused-function]
/home/andre/Arduino/ardupilot/ArduCopter/Log.pde:630:13: warning: 'void Log_Write_Data(uint8_t, float)' defined but not used [-Wunused-function]
autogenerated:165:14: warning: 'void Log_Write_DMP()' declared 'static' but never defined [-Wunused-function]
autogenerated:147:14: warning: 'void Log_Write_IMU()' declared 'static' but never defined [-Wunused-function]
autogenerated:148:14: warning: 'void Log_Write_GPS()' declared 'static' but never defined [-Wunused-function]
autogenerated:329:14: warning: 'void report_heli()' declared 'static' but never defined [-Wunused-function]
autogenerated:330:15: warning: 'void report_gyro()' declared 'static' but never defined [-Wunused-function]
autogenerated:337:23: warning: 'RC_Channel* heli_get_servo(int16_t)' declared 'static' but never defined [-Wunused-function]
autogenerated:338:17: warning: 'int16_t read_num_from_serial()' declared 'static' but never defined [-Wunused-function]
%% libraries/AC_Fence/AC_Fence.o
%% libraries/AC_PID/AC_PID.o
%% libraries/AC_WPNav/AC_WPNav.o
%% libraries/APM_PI/APM_PI.o
%% libraries/AP_ADC/AP_ADC_ADS7844.o
%% libraries/AP_ADC/AP_ADC.o
%% libraries/AP_ADC/AP_ADC_HIL.o
%% libraries/AP_ADC_AnalogSource/AP_ADC_AnalogSource.o
%% libraries/AP_AHRS/AP_AHRS.o
%% libraries/AP_AHRS/AP_AHRS_DCM.o
%% libraries/AP_AHRS/AP_AHRS_HIL.o
%% libraries/AP_AHRS/AP_AHRS_MPU6000.o
%% libraries/AP_Airspeed/AP_Airspeed.o
%% libraries/AP_Baro/AP_Baro_BMP085.o
%% libraries/AP_Baro/AP_Baro.o
%% libraries/AP_Baro/AP_Baro_HIL.o
%% libraries/AP_Baro/AP_Baro_MS5611.o
%% libraries/AP_Baro/AP_Baro_PX4.o
%% libraries/AP_Camera/AP_Camera.o
%% libraries/AP_Common/c++.o
%% libraries/AP_Compass/AP_Compass_HIL.o
%% libraries/AP_Compass/AP_Compass_HMC5843.o
%% libraries/AP_Compass/AP_Compass_PX4.o
%% libraries/AP_Compass/Compass.o
%% libraries/AP_Curve/AP_Curve.o
%% libraries/AP_Declination/AP_Declination.o
%% libraries/AP_GPS/AP_GPS_406.o
%% libraries/AP_GPS/AP_GPS_Auto.o
%% libraries/AP_GPS/AP_GPS_HIL.o
%% libraries/AP_GPS/AP_GPS_MTK19.o
%% libraries/AP_GPS/AP_GPS_MTK.o
%% libraries/AP_GPS/AP_GPS_NMEA.o
%% libraries/AP_GPS/AP_GPS_SIRF.o
%% libraries/AP_GPS/AP_GPS_UBLOX.o
%% libraries/AP_GPS/GPS.o
%% libraries/AP_HAL_AVR/AnalogIn_ADC.o
%% libraries/AP_HAL_AVR/AnalogIn_Common.o
%% libraries/AP_HAL_AVR/Console.o
%% libraries/AP_HAL_AVR/GPIO.o
%% libraries/AP_HAL_AVR/HAL_AVR_APM1_Class.o
%% libraries/AP_HAL_AVR/HAL_AVR_APM2_Class.o
%% libraries/AP_HAL_AVR/I2CDriver.o
%% libraries/AP_HAL_AVR/RCInput_APM1.o
%% libraries/AP_HAL_AVR/RCInput_APM2.o
%% libraries/AP_HAL_AVR/RCOutput_APM1.o
%% libraries/AP_HAL_AVR/RCOutput_APM2.o
%% libraries/AP_HAL_AVR/Scheduler.o
%% libraries/AP_HAL_AVR/Scheduler_Timer.o
%% libraries/AP_HAL_AVR/Semaphores.o
%% libraries/AP_HAL_AVR/SPIDeviceManager_APM1.o
%% libraries/AP_HAL_AVR/SPIDeviceManager_APM2.o
%% libraries/AP_HAL_AVR/SPIDevice_SPI0.o
%% libraries/AP_HAL_AVR/SPIDevice_SPI2.o
%% libraries/AP_HAL_AVR/SPIDevice_SPI3.o
%% libraries/AP_HAL_AVR/Storage.o
%% libraries/AP_HAL_AVR/UARTDriver.o
%% libraries/AP_HAL_AVR/Util.o
%% libraries/AP_HAL_AVR_SITL/AnalogIn.o
%% libraries/AP_HAL_AVR_SITL/Console.o
%% libraries/AP_HAL_AVR_SITL/HAL_AVR_SITL_Class.o
%% libraries/AP_HAL_AVR_SITL/RCInput.o
%% libraries/AP_HAL_AVR_SITL/RCOutput.o
%% libraries/AP_HAL_AVR_SITL/Scheduler.o
%% libraries/AP_HAL_AVR_SITL/sitl_barometer.o
%% libraries/AP_HAL_AVR_SITL/sitl_compass.o
%% libraries/AP_HAL_AVR_SITL/sitl_gps.o
%% libraries/AP_HAL_AVR_SITL/sitl_ins.o
%% libraries/AP_HAL_AVR_SITL/SITL_State.o
%% libraries/AP_HAL_AVR_SITL/Storage.o
%% libraries/AP_HAL_AVR_SITL/UARTDriver.o
%% libraries/AP_HAL_AVR_SITL/Util.o
%% libraries/AP_HAL_Empty/AnalogIn.o
%% libraries/AP_HAL_Empty/Console.o
%% libraries/AP_HAL_Empty/GPIO.o
%% libraries/AP_HAL_Empty/HAL_Empty_Class.o
%% libraries/AP_HAL_Empty/I2CDriver.o
%% libraries/AP_HAL_Empty/PrivateMember.o
%% libraries/AP_HAL_Empty/RCInput.o
%% libraries/AP_HAL_Empty/RCOutput.o
%% libraries/AP_HAL_Empty/Scheduler.o
%% libraries/AP_HAL_Empty/Semaphores.o
%% libraries/AP_HAL_Empty/SPIDriver.o
%% libraries/AP_HAL_Empty/Storage.o
%% libraries/AP_HAL_Empty/UARTDriver.o
%% libraries/AP_HAL_Empty/Util.o
%% libraries/AP_HAL_PX4/AnalogIn.o
%% libraries/AP_HAL_PX4/Console.o
%% libraries/AP_HAL_PX4/HAL_PX4_Class.o
%% libraries/AP_HAL_PX4/RCInput.o
%% libraries/AP_HAL_PX4/RCOutput.o
%% libraries/AP_HAL_PX4/Scheduler.o
%% libraries/AP_HAL_PX4/Storage.o
%% libraries/AP_HAL_PX4/UARTDriver.o
%% libraries/AP_HAL_PX4/Util.o
%% libraries/AP_HAL_SMACCM/AnalogIn.o
%% libraries/AP_HAL_SMACCM/Console.o
%% libraries/AP_HAL_SMACCM/GPIO.o
%% libraries/AP_HAL_SMACCM/HAL_SMACCM_Class.o
%% libraries/AP_HAL_SMACCM/PrivateMember.o
%% libraries/AP_HAL_SMACCM/RCOutput.o
%% libraries/AP_HAL_SMACCM/Util.o
%% libraries/AP_InertialNav/AP_InertialNav.o
%% libraries/AP_InertialSensor/AP_InertialSensor.o
%% libraries/AP_InertialSensor/AP_InertialSensor_MPU6000.o
%% libraries/AP_InertialSensor/AP_InertialSensor_Oilpan.o
%% libraries/AP_InertialSensor/AP_InertialSensor_PX4.o
%% libraries/AP_InertialSensor/AP_InertialSensor_Stub.o
%% libraries/AP_InertialSensor/AP_InertialSensor_UserInteract_MAVLink.o
%% libraries/AP_InertialSensor/AP_InertialSensor_UserInteract_Stream.o
%% libraries/AP_Math/AP_Math.o
%% libraries/AP_Math/location.o
%% libraries/AP_Math/matrix3.o
%% libraries/AP_Math/polygon.o
%% libraries/AP_Math/quaternion.o
%% libraries/AP_Math/vector2.o
%% libraries/AP_Math/vector3.o
%% libraries/AP_Menu/AP_Menu.o
%% libraries/AP_Motors/AP_Motors_Class.o
%% libraries/AP_Motors/AP_MotorsHeli.o
%% libraries/AP_Motors/AP_MotorsHexa.o
%% libraries/AP_Motors/AP_MotorsMatrix.o
%% libraries/AP_Motors/AP_MotorsOcta.o
%% libraries/AP_Motors/AP_MotorsOctaQuad.o
%% libraries/AP_Motors/AP_MotorsQuad.o
%% libraries/AP_Motors/AP_MotorsTri.o
%% libraries/AP_Motors/AP_MotorsY6.o
%% libraries/AP_Mount/AP_Mount.o
%% libraries/AP_OpticalFlow/AP_OpticalFlow_ADNS3080.o
%% libraries/AP_OpticalFlow/AP_OpticalFlow.o
%% libraries/AP_Param/AP_Param.o
%% libraries/AP_RCMapper/AP_RCMapper.o
%% libraries/AP_RangeFinder/AP_RangeFinder_analog.o
%% libraries/AP_RangeFinder/AP_RangeFinder_MaxsonarI2CXL.o
%% libraries/AP_RangeFinder/AP_RangeFinder_MaxsonarXL.o
%% libraries/AP_RangeFinder/AP_RangeFinder_SharpGP2Y.o
%% libraries/AP_RangeFinder/RangeFinder.o
%% libraries/AP_Relay/AP_Relay.o
%% libraries/AP_Scheduler/AP_Scheduler.o
%% libraries/DataFlash/DataFlash_APM1.o
%% libraries/DataFlash/DataFlash_APM2.o
%% libraries/DataFlash/DataFlash_Block.o
%% libraries/DataFlash/DataFlash_Empty.o
%% libraries/DataFlash/DataFlash_File.o
%% libraries/DataFlash/DataFlash_SITL.o
%% libraries/DataFlash/LogFile.o
%% libraries/Filter/DerivativeFilter.o
%% libraries/GCS_MAVLink/GCS_MAVLink.o
%% libraries/RC_Channel/RC_Channel_aux.o
%% libraries/RC_Channel/RC_Channel.o
%% libraries/SITL/SITL.o
%% libraries/AP_HAL/utility/Print.o
%% libraries/AP_HAL_AVR/utility/ISRRegistry.o
%% libraries/AP_HAL_AVR/utility/print_vprintf.o
%% libraries/AP_HAL_AVR_SITL/utility/print_vprintf.o
%% ArduCopter.elf
%% ArduCopter.eep
%% ArduCopter.hex
andre@andre-OptiPlex-990:~/Arduino/ardupilot/ArduCopter$ cd ..
