ardupilot/libraries/AP_VisualOdom/AP_VisualOdom_config.h

#pragma once

#include <AP_HAL/AP_HAL_Boards.h>

#ifndef HAL_VISUALODOM_ENABLED
#define HAL_VISUALODOM_ENABLED (!HAL_MINIMIZE_FEATURES && BOARD_FLASH_SIZE > 1024)
#endif