frombuildingimport*cwd=GetCurrentDir()src=Glob('*.c')# remove no need file.ifGetDepend('RT_USING_LWIP')==False:SrcRemove(src,'dm9161.c')ifGetDepend('RT_USING_DFS')==False:SrcRemove(src,'sdcard.c')ifGetDepend('RT_USING_RTGUI')==False:SrcRemove(src,'lcd.c')SrcRemove(src,'lcdc.c')CPPPATH=[cwd]group=DefineGroup('Drivers',src,depend=[''],CPPPATH=CPPPATH)Return('group')