import os
import sys
import rtconfig

TRACE_CONFIG = ''
try:
    with open('rtconfig.h') as f:
        for line in f:
            if line.strip() == '#define RT_BACKTRACE_FUNCTION_NAME':
                TRACE_CONFIG = '-mpoke-function-name'
                break
except OSError:
    pass

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')]
from building import *

TARGET = 'rtthread.' + rtconfig.TARGET_EXT

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)

if TRACE_CONFIG:
    env.AppendUnique(CCFLAGS=[TRACE_CONFIG])
    env['ASPPCOM'] += ' ' + TRACE_CONFIG

env['ASCOM'] = env['ASPPCOM']

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

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

if GetDepend('RT_USING_SMART'):
    # use smart link.lds
    env['LINKFLAGS'] = env['LINKFLAGS'].replace('link.lds', 'link_smart.lds')

# make a building
DoBuilding(TARGET, objs)