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import os
# toolchains options
ARCH='arm'
CPU='cortex-a'
CROSS_TOOL=os.getenv('RTT_CC') or 'gcc'
# only support GNU GCC compiler.
PLATFORM = 'gcc'
EXEC_PATH = os.getenv('RTT_EXEC_PATH') or '/usr/bin'
BUILD = 'debug'
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'
DEVICE = ' -march=armv7-a -mtune=cortex-a9 -mfpu=vfpv3-d16 -ftree-vectorize -ffast-math -mfloat-abi=softfp'
CFLAGS = DEVICE + ' -Wall'
AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -D__ASSEMBLY__'
LINK_SCRIPT = 'link.lds'
LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,system_vectors'+\
' -T %s' % LINK_SCRIPT
CPATH = ''
LPATH = ''
# 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'
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