rt-thread/bsp/ESP32_C3/rtconfig.py

import os

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

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

if CROSS_TOOL == 'gcc': 
    PLATFORM    = 'gcc'
    EXEC_PATH   = r'~/.espressif/tools/riscv32-esp-elf/esp-2022r1-11.2.0/riscv32-esp-elf/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'

if PLATFORM == 'gcc':
    # toolchains
    PREFIX = 'riscv32-esp-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'
    STRIP = PREFIX + 'strip'

    CFLAGS = ''
    AFLAGS = ''
    LFLAGS = ''
    CXXFLAGS = ''

    POST_ACTION = ''