rt-thread-official/components/libc/compilers/common/extension/SConscript

import os
from building import *
Import('rtconfig')

src   = []
cwd   = GetCurrentDir()
CPPPATH = [cwd]
group = []

src += Glob('*.c')

if rtconfig.PLATFORM not in ['gcc', 'llvm-arm']:
    group = DefineGroup('Compiler', 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')