extern int CONFIG_JOYSTICK_AXIS_X;
extern int CONFIG_JOYSTICK_AXIS_Y;
extern int CONFIG_JOYSTICK_AXIS_U;
+extern int CONFIG_JOYSTICK_AXIS_X_INVERT;
+extern int CONFIG_JOYSTICK_AXIS_Y_INVERT;
+extern int CONFIG_JOYSTICK_AXIS_U_INVERT;
extern int CONFIG_JOYSTICK_BUTTON_A;
extern int CONFIG_JOYSTICK_BUTTON_B;
extern int CONFIG_JOYSTICK_BUTTON_R;