import os
import sys

CROSS_TOOL = 'gcc'

if os.getenv('RTT_CC'):
    CROSS_TOOL = os.getenv('RTT_CC')
# device options
ARCH = 'arm'
CPU = 'cortex-m3'

if CROSS_TOOL == 'gcc':
    PLATFORM = 'gcc'
    EXEC_PATH = 'D:/Program/env/tools/gnu_gcc/arm_gcc/mingw/bin'
elif CROSS_TOOL == 'keil':
    PLATFORM = 'armcc'
    EXEC_PATH = 'D:/Program/Keil_v5'

if os.getenv('RTT_EXEC_PATH'):
    EXEC_PATH = os.getenv('RTT_EXEC_PATH')

# BUILD = 'debug'
BUILD = 'release'

if PLATFORM == 'gcc':
    PREFIX = 'arm-none-eabi-'
    CC = PREFIX + 'gcc'
    CXX = PREFIX + 'g++'
    AS = PREFIX + 'gcc'
    AR = PREFIX + 'ar'
    LINK = PREFIX + 'gcc'
    TARGET_EXT = 'elf'
    SIZE = PREFIX + 'size'
    OBJDUMP = PREFIX + 'objdump'
    OBJCPY = PREFIX + 'objcopy'

    DEVICE = ' -mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections -Wall'
    CFLAGS = DEVICE + ' -std=c99'
    AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -Wa,-mimplicit-it=thumb '
    # link script file path
    LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,Reset_Handler -T CMSIS/startup_gcc/debug-in-microsemi-smartfusion2-envm.ld'
    
    CPATH = ''
    LPATH = ''

    if BUILD == 'debug':
        CFLAGS += ' -O0 -gdwarf-2 -g'
        AFLAGS += ' -gdwarf-2'
    else:
        CFLAGS += ' -O2'

    POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + OBJCPY + ' -O ihex $TARGET rtthread.hex\n' + SIZE + ' $TARGET \n'

elif PLATFORM == 'armcc':
    # toolchains
    CC = 'armcc'
    AS = 'armasm'
    AR = 'armar'
    LINK = 'armlink'
    TARGET_EXT = 'axf'

    DEVICE = ' --cpu ' + CPU 
    CFLAGS = '-c ' + DEVICE + ' --apcs=interwork --c99'
    AFLAGS = DEVICE + ' --apcs=interwork '
    # link scatter file path
    LFLAGS = DEVICE + ' --scatter "applications/link.sct" --info sizes --info totals --info unused --info veneers --list rtthread.map --strict'

    CFLAGS += ' -I' + EXEC_PATH + '/ARM/ARMCC/INC'
    LFLAGS += ' --libpath ' + EXEC_PATH + '/ARM/ARMCC/LIB'

    CFLAGS += ' -D__MICROLIB '
    AFLAGS += ' --pd "__MICROLIB SETA 1" '
    LFLAGS += ' --library_type=microlib '
    EXEC_PATH += '/arm/armcc/bin/'

    if BUILD == 'debug':
        CFLAGS += ' -g -O0'
        AFLAGS += ' -g'
    else:
        CFLAGS += ' -O2'

    POST_ACTION = 'fromelf --bin $TARGET --output rtthread.bin \nfromelf -z $TARGET'