Import('RTT_ROOT') Import('rtconfig') from building import * cwd = GetCurrentDir() # add the general drivers. src = Split(""" board.c stm32f4xx_it.c usart.c drv_sdram.c drv_lcd.c """) CPPPATH = [cwd] group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH) Return('group')