import os
import sys

if 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')]
import rtconfig
try:
    from building import *
    from env_package import packages_available
except:
    print('Cannot found RT-Thread root directory, please check RTT_ROOT')
    print(RTT_ROOT)
    exit(-1)

def bsp_pkg_check():
    if GetOption('clean'):
        return

    need_update = not packages_available(os.path.abspath('.'), ['gd32-riscv-series-latest'])

    if need_update:
        print("\n===============================================================================")
        print("Dependency packages missing, please running 'pkgs --update'...")
        print("If no packages are fetched, run 'pkgs --upgrade' first, then 'pkgs --update'...")
        print("===============================================================================")
        exit(1)

RegisterPreBuildingAction(bsp_pkg_check) 

TARGET = 'rtthread.' + rtconfig.TARGET_EXT

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

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)

gd32_library = 'GD32VW55x_Firmware_Library'
rtconfig.BSP_LIBRARY_TYPE = gd32_library

# include drivers
objs.extend(SConscript(os.path.join(libraries_path_prefix, 'gd32_drivers', 'SConscript'), variant_dir='build/libraries', duplicate=0))

# make a building
DoBuilding(TARGET, objs)