sdk-bsp-at32f403a-at-start/project_0/SConstruct

import os
import sys
import rtconfig

if os.getenv('RTT_ROOT'):
    RTT_ROOT = os.getenv('RTT_ROOT')
else:
    RTT_ROOT = os.path.normpath(os.getcwd() + '/../../..')

# set RTT_ROOT
if not os.getenv("RTT_ROOT"): 
    RTT_ROOT="rt-thread"

sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
try:
    from building import *
except:
    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
    print(RTT_ROOT)
    exit(-1)

TARGET = 'rtthread.' + rtconfig.TARGET_EXT

DefaultEnvironment(tools=[])
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)

if rtconfig.PLATFORM == 'iar':
    env.Replace(CCCOM = ['$CC $CCFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -o $TARGET $SOURCES'])
    env.Replace(ARFLAGS = [''])
    env.Replace(LINKCOM = env["LINKCOM"] + ' --map project.map')

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

SDK_ROOT = os.path.abspath('./')

if os.path.exists(SDK_ROOT + '/Libraries'):
    libraries_path_prefix = SDK_ROOT + '/Libraries'
else:
    libraries_path_prefix = os.path.dirname(SDK_ROOT) + '/Libraries'

SDK_LIB = libraries_path_prefix
Export('SDK_LIB')

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

at32_library = 'AT32_Std_Driver'
rtconfig.BSP_LIBRARY_TYPE = at32_library

# include libraries
objs.extend(SConscript(os.path.join(libraries_path_prefix, at32_library, 'SConscript')))

# common include drivers
objs.extend(SConscript(os.path.join(libraries_path_prefix, 'rt_drivers', 'SConscript')))

# make a building
DoBuilding(TARGET, objs)