rt-thread/bsp/stm32l476-nucleo/rtconfig.py

import os

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

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

# cross_tool provides the cross compiler
# EXEC_PATH is the compiler execute path, for example, CodeSourcery, Keil MDK, IAR
if  CROSS_TOOL == 'gcc':
    PLATFORM 	= 'gcc'
    EXEC_PATH 	= '/usr/local/Cellar/arm-none-eabi-gcc/7-2017-q4-major/gcc/bin/'
elif CROSS_TOOL == 'keil':
    print('================ERROR============================')
    print('Not support iar yet!')
    print('=================================================')
    exit(0)
elif CROSS_TOOL == 'iar':
    print('================ERROR============================')
    print('Not support iar yet!')
    print('=================================================')
    exit(0)

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

BUILD = 'debug'
# BUILD = 'release'

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

    DEVICE = '  -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections'
    CFLAGS = DEVICE + ' -g -Wall'
    AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -Wa,-mimplicit-it=thumb '
    LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread-stm32.map,-cref,-u,Reset_Handler -T stm32_rom.ld'

    CPATH = ''
    LPATH = ''

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

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

    M_CFLAGS = CFLAGS + ' -mlong-calls  -Dsourcerygxx -O0 -fPIC '
    M_LFLAGS = DEVICE + ' -Wl,-z,max-page-size=0x4 -shared -fPIC -e main -nostdlib'
	
elif PLATFORM == 'armcc':
    print('================ERROR============================')
    print('Not support iar yet!')
    print('=================================================')
    exit(0)
elif PLATFORM == 'iar':
    print('================ERROR============================')
    print('Not support iar yet!')
    print('=================================================')
    exit(0)