rt-thread/bsp/stm32/stm32f103-blue-pill/applications/SConscript

from building import *
import os

cwd = GetCurrentDir()
src = Glob('*.c')
CPPPATH = [cwd]

group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)

list = os.listdir(cwd)
for d in list:
    path = os.path.join(cwd, d)
    if os.path.isfile(os.path.join(path, 'SConscript')):
        group = group + SConscript(os.path.join(d, 'SConscript'))

Return('group')