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() + '/../../..')

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)

def bsp_pkg_check():
    import subprocess
    
    need_update = True
    for p in os.listdir("packages"):
        if p.startswith("hpm_sdk-"):
            need_update = False
            break
    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

AddOption('--run',
        dest = 'run',
        type='string',
        nargs=1,
        action = 'store',
        default = "",
        help = 'Upload or debug application using openocd')

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,
    CXXCOM = '$CXX -o $TARGET -c $CXXFLAGS $_CCCOMCOM $SOURCES')

env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
env['ASCOM'] = env['ASPPCOM']

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

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

if os.path.exists(os.path.join(SDK_ROOT, 'libraries')):
    libraries_path_prefix = os.path.join(SDK_ROOT, 'libraries')
else:
    libraries_path_prefix = os.path.join(os.path.dirname(SDK_ROOT), 'libraries')

SDK_LIB = libraries_path_prefix
Export('SDK_LIB')


GDB = rtconfig.GDB

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



# includes rtt drivers
objs.extend(SConscript(os.path.join(libraries_path_prefix, 'drivers',  'SConscript')))

# make a building
DoBuilding(TARGET, objs)