rt-thread/bsp/lpc43xx/M4/SConstruct

import os
import sys
import rtconfig

if os.getenv('RTT_ROOT'):
    RTT_ROOT = os.getenv('RTT_ROOT')
else:
    RTT_ROOT = os.path.join(Dir('#').get_abspath(), '..', '..', '..')

sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
from building import *

TARGET = 'build/rtthread_lpc43xx.' + rtconfig.TARGET_EXT

env = Environment(tools = ['mingw'],
    AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
    CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS,
    AR = rtconfig.AR, ARFLAGS = '-rc',
    LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
env.PrependENVPath('PATH', rtconfig.EXEC_PATH)

Export('RTT_ROOT')
Export('rtconfig')

# prepare building environment
objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)

if rtconfig.CROSS_TOOL == 'gcc':
    print('build M0 code first')
    if sys.platform.startswith('linux'):
        import glob
        ocwd = os.getcwdu()
        os.chdir('../M0')
        res = os.system('scons')
        if res:
            print('build M0 exit with code %d\n' % res)
            sys.exit(res)
        os.chdir(ocwd)
        res = os.system('cd ../Libraries/; find -name \*.o -exec rm {} \;')
        os.chdir(ocwd)
    else:
        # Assume Windows.
        ocwd = os.getcwdu()
        os.chdir('..\M0')
        os.system('scons.bat')
        os.chdir(ocwd)

    # Remove the .o for M0 left on the drivers dir.
    for i in glob.glob(GetCurrentDir() + '/../drivers/*.o'):
        print('RM %s' % i)
        os.unlink(i)

# do building 
DoBuilding(TARGET, objs)