import os

# toolchains options
ARCH='arm'
CPU='cortex-m4'
CROSS_TOOL='gcc'
BOARD_NAME = 'lpc54114'

if os.getenv('RTT_CC'):
    CROSS_TOOL = os.getenv('RTT_CC')

if  CROSS_TOOL == 'gcc':
    PLATFORM    = 'gcc'
    EXEC_PATH   = r'D:/Program Files/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_EABI/bin'
elif CROSS_TOOL == 'keil':
    PLATFORM    = 'armcc'
    EXEC_PATH   = r'D:/Keil_v5'
elif CROSS_TOOL == 'iar':
    PLATFORM    = 'iccarm'
    EXEC_PATH  = 'C:/Program Files (x86)/IAR Systems/Embedded Workbench 7.2'

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

BUILD = 'debug'

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

    DEVICE = ' -mcpu=cortex-m4 -mthumb -ffunction-sections -fdata-sections -mfpu=fpv4-sp-d16 -mfloat-abi=hard'
    CFLAGS = DEVICE + ' -g -Wall -eentry'
    AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -Wa,-mimplicit-it=thumb -D__STARTUP_CLEAR_BSS'
    LFLAGS = DEVICE + ' -lm -lgcc -lc' + ' -nostartfiles  -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,ResetISR -T drivers/linker_scripts/link.lds'

    CPATH = ''
    LPATH = ''

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

    CXXFLAGS = CFLAGS

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

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

    DEVICE = ' --cpu Cortex-M4.fp'
    CFLAGS = DEVICE + ' --apcs=interwork'
    AFLAGS = DEVICE
    LFLAGS = DEVICE + ' --info sizes --info totals --info unused --info veneers --list rtthread_' + \
        BOARD_NAME + '.map --scatter \drivers\linker_scripts\link.scf'

    CFLAGS += ' -I' + EXEC_PATH + '/ARM/RV31/INC'
    LFLAGS += ' --libpath ' + EXEC_PATH + '/ARM/RV31/LIB'
    
    EXEC_PATH += '/arm/bin40/'

    if BUILD == 'debug':
        CFLAGS += ' -g -O0'
        AFLAGS += ' -g'
    else:
        CFLAGS += ' -O2'
        
    CXXFLAGS = CFLAGS
    CFLAGS += ' --c99'
    
    POST_ACTION = 'fromelf --bin $TARGET --output rtthread.bin \nfromelf -z $TARGET'
    
elif PLATFORM == 'iccarm':
    # toolchains
    CC = 'iccarm'
    AS = 'iasmarm'
    AR = 'iarchive'
    LINK = 'ilinkarm'
    TARGET_EXT = 'out'

    DEVICE = '-Dewarm' # + ' -D' + PART_TYPE

    CFLAGS = DEVICE
    CFLAGS += ' --diag_suppress Pa050'
    CFLAGS += ' --no_cse' 
    CFLAGS += ' --no_unroll' 
    CFLAGS += ' --no_inline' 
    CFLAGS += ' --no_code_motion' 
    CFLAGS += ' --no_tbaa' 
    CFLAGS += ' --no_clustering' 
    CFLAGS += ' --no_scheduling' 

    CFLAGS += ' --endian=little' 
    CFLAGS += ' --cpu=Cortex-M4' 
    CFLAGS += ' -e' 
    CFLAGS += ' --fpu=VFPv4_sp'
    CFLAGS += ' --dlib_config "' + EXEC_PATH + '/arm/INC/c/DLib_Config_Normal.h"'    
    CFLAGS += ' --silent'
        
    AFLAGS = DEVICE
    AFLAGS += ' -s+' 
    AFLAGS += ' -w+' 
    AFLAGS += ' -r' 
    AFLAGS += ' --cpu Cortex-M4' 
    AFLAGS += ' --fpu VFPv4_sp' 
    AFLAGS += ' -S'
    
    if BUILD == 'debug':
        CFLAGS += ' --debug' 
        CFLAGS += ' -On'    
    else:
        CFLAGS += ' -Oh'    	
    
    LFLAGS = ' --config "\drivers\linker_scripts\link.icf"' 
    LFLAGS += ' --entry __iar_program_start'    
    #LFLAGS += ' --silent'
    
    EXEC_PATH = EXEC_PATH + '/arm/bin/'
    POST_ACTION = ''