rt-thread-official/bsp/qemu-vexpress-a9/applications/SConscript

import os
from building import *

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

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

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

Return('group')