.\Objects\project.axf: Error: L6218E: Undefined symbol __rev (referred from gui_vnc_x_startserver.o).
.\Objects\project.axf: Error: L6218E: Undefined symbol os_dly_wait (referred from gui_vnc_x_startserver.o).
.\Objects\project.axf: Error: L6218E: Undefined symbol os_tsk_create0 (referred from gui_vnc_x_startserver.o).
.\Objects\project.axf: Error: L6218E: Undefined symbol net_bsd_config (referred from net_bsd.o).
这些是在哪里定义的呢?