import os # toolchains options ARCH='arm' CPU='cortex-a' CROSS_TOOL='gcc' if os.getenv('RTT_CC'): CROSS_TOOL = os.getenv('RTT_CC') # only support GNU GCC compiler. PLATFORM = 'gcc' EXEC_PATH = r'/usr/lib/arm-none-eabi/bin' if os.getenv('RTT_EXEC_PATH'): EXEC_PATH = os.getenv('RTT_EXEC_PATH') BUILD = 'debug' LIBPATH = '/usr/lib/arm-none-eabi/lib' if PLATFORM == 'gcc': # toolchains PREFIX = 'arm-none-eabi-' 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' DEVICE = ' -march=armv8-a -mfpu=vfpv4-d16 -ftree-vectorize -ffast-math -mfloat-abi=soft --specs=nano.specs --specs=nosys.specs -fno-builtin ' CFLAGS = DEVICE + ' -Wall' AFLAGS = ' -c'+ DEVICE + ' -fsingle-precision-constant -fno-builtin -x assembler-with-cpp -D__ASSEMBLY__' LINK_SCRIPT = 'ft_aarch32.lds' LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,system_vectors'+\ ' -T %s' % LINK_SCRIPT CPATH = '' LPATH = LIBPATH # generate debug info in all cases AFLAGS += ' -gdwarf-2' CFLAGS += ' -g -gdwarf-2' if BUILD == 'debug': CFLAGS += ' -O0' else: CFLAGS += ' -O2' POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' +\ SIZE + ' $TARGET \n'