rt-thread/bsp/sparkfun-redv/rtconfig.py

import os

ARCH     = 'risc-v'
CPU      = 'e310'
VENDOR   = 'sifive'
# toolchains options
CROSS_TOOL  = 'gcc'

#------- toolchains path -------------------------------------------------------
if os.getenv('RTT_CC'):
    CROSS_TOOL = os.getenv('RTT_CC')

if  CROSS_TOOL == 'gcc':
    PLATFORM    = 'gcc'
    EXEC_PATH   = r'/opt/FreedomStudio/SiFive/riscv64-unknown-elf-gcc-8.3.0-2019.08.0/bin/'
else:
    print('Please make sure your toolchains is GNU GCC!')
    exit(0)

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

BUILD = 'debug'
#BUILD = 'release'

CORE = 'risc-v'
MAP_FILE = 'rtthread.map'
LINK_FILE = './freedom-e-sdk/bsp/env/freedom-e300-hifive1/flash.lds'
TARGET_NAME = 'rtthread.bin'
TARGET_NAME_HEX = 'rtthread.hex'

#------- GCC settings ----------------------------------------------------------
if PLATFORM == 'gcc':
    # toolchains
    PREFIX = 'riscv64-unknown-elf-'
    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 = ' -march=rv32imac -mabi=ilp32 -DUSE_PLIC -DUSE_M_TIME -DNO_INIT -mcmodel=medany -msmall-data-limit=8 -L.  -nostartfiles  -lc '
    CFLAGS = DEVICE
    CFLAGS += ' -save-temps=obj'
    AFLAGS = '-c'+ DEVICE + ' -x assembler-with-cpp'
    AFLAGS += ' -Iplatform -Ifreedom-e-sdk/bsp/include -Ifreedom-e-sdk/bsp/env'
    LFLAGS = DEVICE
    LFLAGS += ' -Wl,--gc-sections,-cref,-Map=' + MAP_FILE
    LFLAGS += ' -T ' + LINK_FILE
    LFLAGS += ' -Wl,-wrap=memset'

    CPATH = ''
    LPATH = ''

    if BUILD == 'debug':
        CFLAGS += ' -O0 -g3'
        AFLAGS += ' -g3'
    else:
        CFLAGS += ' -O2'

    CXXFLAGS = CFLAGS

    POST_ACTION = OBJCPY + ' -O binary $TARGET ' + TARGET_NAME + '\n'
    POST_ACTION += OBJCPY + ' -O ihex   $TARGET ' + TARGET_NAME_HEX + '\n'
    #POST_ACTION += OBJCPY + ' -I binary -O ihex ' + TARGET_NAME + ' ' + TARGET_NAME_HEX + '\n'
    POST_ACTION += SIZE + ' $TARGET\n'