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- import os
- # toolchains options
- ARCH ='risc-v'
- CPU ='virt64'
- CROSS_TOOL ='gcc'
- RTT_ROOT = os.getenv('RTT_ROOT') or os.path.join(os.getcwd(), '..', '..')
- if os.getenv('RTT_CC'):
- CROSS_TOOL = os.getenv('RTT_CC')
- if CROSS_TOOL == 'gcc':
- PLATFORM = 'gcc'
- EXEC_PATH = os.getenv('RTT_EXEC_PATH') or '/usr/bin'
- else:
- print('Please make sure your toolchains is GNU GCC!')
- exit(0)
- BUILD = 'debug'
- if PLATFORM == 'gcc':
- # toolchains
- PREFIX = os.getenv('RTT_CC_PREFIX') or '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 = ' -mcmodel=medany -march=rv64imafdc -mabi=lp64 '
- CFLAGS = DEVICE + '-ffreestanding -flax-vector-conversions -Wno-cpp -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -fdiagnostics-color=always'
- AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -D__ASSEMBLY__ '
- LFLAGS = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,_start -T link.lds' + ' -lsupc++ -lgcc -static'
- CPATH = ''
- LPATH = ''
- if BUILD == 'debug':
- CFLAGS += ' -O0 -ggdb -fvar-tracking '
- AFLAGS += ' -ggdb'
- else:
- CFLAGS += ' -O2 -Os'
- CXXFLAGS = CFLAGS
- DUMP_ACTION = OBJDUMP + ' -D -S $TARGET > rtthread.asm\n'
- POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
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