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import os
# toolchains options
ARCH ='arm'
CPU ='cortex-a'
CROSS_TOOL = 'gcc'
PLATFORM = 'gcc'
EXEC_PATH = os.getenv('RTT_EXEC_PATH') or r'/usr/bin'
BUILD = 'debug'
LINK_SCRIPT = 'link.lds'
if PLATFORM == 'gcc':
PREFIX = os.getenv('RTT_CC_PREFIX') or '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'
CFPFLAGS = ' -msoft-float'
AFPFLAGS = ' -mfloat-abi=softfp -mfpu=neon'
DEVICE = ' -march=armv7-a -mtune=cortex-a7 -ftree-vectorize -ffast-math -funwind-tables -fno-strict-aliasing'
CXXFLAGS= DEVICE + CFPFLAGS + ' -Wall -fdiagnostics-color=always'
CFLAGS = DEVICE + CFPFLAGS + ' -Wall -Wno-cpp -std=gnu99 -D_POSIX_SOURCE -fdiagnostics-color=always'
AFLAGS = DEVICE + ' -c' + AFPFLAGS + ' -x assembler-with-cpp'
LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,system_vectors -T '+ LINK_SCRIPT + ' -lsupc++ -lgcc -static'
CPATH = ''
LPATH = ''
if BUILD == 'debug':
CFLAGS += ' -O0 -gdwarf-2'
CXXFLAGS += ' -O0 -gdwarf-2'
AFLAGS += ' -gdwarf-2'
else:
CFLAGS += ' -Os'
CXXFLAGS += ' -Os'
CXXFLAGS += ' -Woverloaded-virtual -fno-rtti'
MKIMAGE = '-t imximage -b rtthread.bin -o rtthread.imx -g rtthread.img -a 0x80001000'
M_CFLAGS = CFLAGS + ' -mlong-calls -fPIC '
M_CXXFLAGS = CXXFLAGS + ' -mlong-calls -fPIC'
M_LFLAGS = DEVICE + CXXFLAGS + ' -Wl,--gc-sections,-z,max-page-size=0x4' +\
' -shared -fPIC -nostartfiles -nostdlib -static-libgcc'
M_POST_ACTION = STRIP + ' -R .hash $TARGET\n' + SIZE + ' $TARGET \n'
DUMP_ACTION = OBJDUMP + ' -D -S $TARGET > rtt.asm\n'
POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n' +\
'python3 mkimage.py ' + MKIMAGE + '\n'
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