import os
import sys

if os.getenv('RTT_ROOT'):
    RTT_ROOT = os.getenv('RTT_ROOT')
else:
    RTT_ROOT = os.path.join(os.getcwd(), '..', '..', '..')

sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools'), os.path.join(os.getcwd(), '../tools')]

from building import *
from buildutil import *

import rtconfig

TARGET = 'rtthread.' + rtconfig.TARGET_EXT

ld_dst = 'gcc_xip_off.ld'
cmd = '{cppcmd} -P -C -E -I. -D__ASSEMBLY__ {ld_src} -o {ld_dst}'.format(
                  cppcmd = os.path.join(rtconfig.EXEC_PATH, 'arm-none-eabi-gcc'),
                  ld_src = rtconfig.LINK_SCRIPT,
                  ld_dst = ld_dst)
if os.system(cmd) != 0:
        print('failed to generate linker script %s' % ld_dst)
        sys.exit(255)
# if the linker script changed, relink the target
Depends(TARGET, ld_dst)

DefaultEnvironment(tools=[])
env = Environment(tools = ['mingw'],
    AS   = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
    CC   = rtconfig.CC, CFLAGS = rtconfig.CFLAGS,
    CXX  = rtconfig.CXX, CXXFLAGS = rtconfig.CXXFLAGS,
    AR   = rtconfig.AR, ARFLAGS = '-rc',
    LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
env['ASCOM'] = env['ASPPCOM']
env['LINKCOM'] = '$LINK -o $TARGET $LINKFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS -Wl,--start-group $_LIBFLAGS -Wl,--end-group'

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

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

# make a building
DoBuilding(TARGET, objs)