rt-thread-official/components/libc/compilers/gcc/newlib/SConscript

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

src = []
cwd = GetCurrentDir()
group = []
LIBS = ['m'] # link libm
CPPPATH = [cwd]

if rtconfig.PLATFORM == 'gcc':
    if GetDepend('RT_USING_LIBC'):
        LIBS += ['c'] # link libc
        src += Glob('*.c')
    else:
        src += ['syscalls.c']

    #report newlib version
    print('Newlib version:' + GetNewLibVersion(rtconfig))

    # identify this is Newlib, and only enable POSIX.1-1990
    CPPDEFINES = ['RT_USING_NEWLIB', '_POSIX_C_SOURCE=1']

    group = DefineGroup('libc', src, depend = [], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES, LIBS = LIBS)


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')