import os
import sys
import rtconfig

if os.path.isdir('./rt-thread'):
    RTT_ROOT = os.path.normpath(os.path.join(os.getcwd(), 'rt-thread/'))
elif os.getenv('RTT_ROOT'):
    RTT_ROOT = os.getenv('RTT_ROOT')
else:
    RTT_ROOT = os.path.normpath(os.getcwd() + '/../..')

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

TARGET = 'rtthread-zynq7000.' + 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)

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

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

# if the linker script changed, relink the target
Depends(TARGET, rtconfig.LINK_SCRIPT)

# make a building
DoBuilding(TARGET, objs)