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import os
import re
# toolchains options
ARCH ='risc-v'
VENDOR ='t-head'
CPU ='c908'
CROSS_TOOL ='gcc'
RTT_ROOT = os.getenv('RTT_ROOT', r'../..')
if os.getenv('RTT_CC'):
CROSS_TOOL = os.getenv('RTT_CC')
if CROSS_TOOL == 'gcc':
PLATFORM = 'gcc'
EXEC_PATH = r'/opt/toolchain/riscv64-linux-musleabi_for_x86_64-pc-linux-gnu_rtt/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')
if re.match("-DDBGLV=0", os.getenv('KCFLAGS', '-DDBGLV=0')):
BUILD = 'release'
else:
BUILD = 'debug'
if PLATFORM == 'gcc':
# toolchains
#PREFIX = 'riscv64-unknown-elf-'
PREFIX = os.getenv('RTT_CC_PREFIX') or 'riscv64-unknown-linux-musl-'
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=rv64imafdcv -mabi=lp64d'
CFLAGS = DEVICE + ' -Wno-cpp -fvar-tracking -ffreestanding -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -D_POSIX_SOURCE '
AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -D__ASSEMBLY__'
LFLAGS = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,_start -T link.lds.generated' + ' -lsupc++ -lgcc -static'
CPATH = ''
LPATH = ''
if BUILD == 'debug':
CFLAGS += ' -O0 -gdwarf-2'
AFLAGS += ' -gdwarf-2'
else:
CFLAGS += ' -O2 -g -gdwarf-2'
CFLAGS += ' ' + os.getenv('KCFLAGS', '-DDBGLV=0')
CXXFLAGS = CFLAGS
POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
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