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.append(os.path.join(RTT_ROOT, 'tools'))
try:
    from building import *
except ImportError:
    print('Cannot find the RT-Thread root directory:')
    print(RTT_ROOT)
    exit(-1)


def bsp_pkg_check():
    package_files = [
        os.path.join(rtconfig.NXP_MCX_CMSIS_ROOT, 'Core', 'Include', 'core_cm23.h'),
        os.path.join(rtconfig.NXP_MCX_SERIES_ROOT, 'MCXC162', 'gcc', 'MCXC162_flash.ld'),
    ]
    if not all(os.path.isfile(path) for path in package_files):
        print('Required NXP packages are missing. Run pkgs --update first.')
        exit(1)


RegisterPreBuildingAction(bsp_pkg_check)

TARGET = 'rtthread.' + rtconfig.TARGET_EXT
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,
    CXXCOM='$CXX -o $TARGET -c $CXXFLAGS $_CCCOMCOM $SOURCES',
)

env.PrependENVPath('PATH', rtconfig.EXEC_PATH)

if rtconfig.PLATFORM == 'iccarm':
    env.Replace(CCCOM=['$CC $CFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -o $TARGET $SOURCES'])
    env.Replace(ARFLAGS=[])
    env.Replace(LINKCOM=env['LINKCOM'] + ' --map rtthread.map')

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

SDK_ROOT = os.path.abspath('.')
libraries_path = SDK_ROOT + '/libraries' if os.path.exists(SDK_ROOT + '/libraries') else os.path.dirname(SDK_ROOT) + '/libraries'
SDK_LIB = libraries_path
Export('SDK_LIB')

objs = PrepareBuilding(env, RTT_ROOT, has_libcpu=False)
if rtconfig.PLATFORM == 'iccarm':
    env.Replace(ASCOM='$AS $ASFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -o $TARGET $SOURCES')
objs.extend(SConscript(os.path.join(libraries_path, 'drivers', 'SConscript'),
                       variant_dir='build/libraries/drivers', duplicate=0))
DoBuilding(TARGET, objs)