global: use static method to construct Compass

APMrover2/Rover.h

@@ -153,7 +153,7 @@ private:
     // sensor drivers
     AP_GPS gps;
     AP_Baro barometer = AP_Baro::create();
-    Compass compass;
+    Compass compass = Compass::create();
     AP_InertialSensor ins;
     RangeFinder rangefinder { serial_manager, ROTATION_NONE };
     AP_Button button;

AntennaTracker/Tracker.h

@@ -108,7 +108,7 @@ private:
 
     AP_Baro barometer = AP_Baro::create();
 
-    Compass compass;
+    Compass compass = Compass::create();
 
     AP_InertialSensor ins;
 

ArduCopter/Copter.h

@@ -198,7 +198,7 @@ private:
     AP_Int8 *flight_modes;
 
     AP_Baro barometer = AP_Baro::create();
-    Compass compass;
+    Compass compass = Compass::create();
     AP_InertialSensor ins;
 
     RangeFinder rangefinder {serial_manager, ROTATION_PITCH_270};

ArduPlane/Plane.h

@@ -201,7 +201,7 @@ private:
     AP_Int8 *flight_modes = &g.flight_mode1;
 
     AP_Baro barometer = AP_Baro::create();
-    Compass compass;
+    Compass compass = Compass::create();
 
     AP_InertialSensor ins;
 

ArduSub/Sub.h

@@ -167,7 +167,7 @@ private:
 
     TSYS01 celsius;
     AP_Baro barometer = AP_Baro::create();
-    Compass compass;
+    Compass compass = Compass::create();
     AP_InertialSensor ins;
 
     RangeFinder rangefinder {serial_manager, ROTATION_PITCH_270};

Tools/Replay/Replay.h

@@ -61,7 +61,7 @@ public:
     AP_InertialSensor ins;
     AP_Baro barometer = AP_Baro::create();
     AP_GPS gps;
-    Compass compass;
+    Compass compass = Compass::create();
     AP_SerialManager serial_manager;
     RangeFinder rng {serial_manager, ROTATION_PITCH_270};
     NavEKF2 EKF2{&ahrs, barometer, rng};

libraries/AP_AHRS/examples/AHRS_Test/AHRS_Test.cpp

@@ -16,7 +16,7 @@ const AP_HAL::HAL& hal = AP_HAL::get_HAL();
 // INS and Baro declaration
 AP_InertialSensor ins;
 
-Compass compass;
+static Compass compass = Compass::create();
 
 AP_GPS gps;
 static AP_Baro barometer = AP_Baro::create();

libraries/AP_Compass/examples/AP_Compass_test/AP_Compass_test.cpp

@@ -9,7 +9,7 @@
 
 const AP_HAL::HAL& hal = AP_HAL::get_HAL();
 
-static Compass compass;
+static Compass compass = Compass::create();
 
 uint32_t timer;
 

libraries/AP_Mission/examples/AP_Mission_test/AP_Mission_test.cpp

@@ -17,7 +17,7 @@ private:
     AP_InertialSensor ins;
     AP_Baro baro = AP_Baro::create();
     AP_GPS  gps;
-    Compass compass;
+    Compass compass = Compass::create();
     AP_AHRS_DCM ahrs{ins, baro, gps};
 
     // global constants that control how many verify calls must be made for a command before it completes

libraries/AP_OpticalFlow/examples/AP_OpticalFlow_test/AP_OpticalFlow_test.cpp

@@ -23,7 +23,7 @@ class DummyVehicle {
 public:
     AP_GPS gps;
     AP_Baro barometer = AP_Baro::create();
-    Compass compass;
+    Compass compass = Compass::create();
     AP_InertialSensor ins;
     AP_SerialManager serial_manager;
     RangeFinder sonar {serial_manager, ROTATION_PITCH_270};