1import os
2
3# toolchains options
4ARCH        ='risc-v'
5CPU         ='virt64'
6CROSS_TOOL  ='gcc'
7
8RTT_ROOT = os.getenv('RTT_ROOT') or os.path.join(os.getcwd(), '..', '..')
9
10if os.getenv('RTT_CC'):
11    CROSS_TOOL = os.getenv('RTT_CC')
12
13if  CROSS_TOOL == 'gcc':
14    PLATFORM    = 'gcc'
15    EXEC_PATH   = os.getenv('RTT_EXEC_PATH') or '/usr/bin'
16else:
17    print('Please make sure your toolchains is GNU GCC!')
18    exit(0)
19
20BUILD = 'debug'
21
22if PLATFORM == 'gcc':
23    # toolchains
24    PREFIX  = os.getenv('RTT_CC_PREFIX') or 'riscv64-unknown-elf-'
25    CC      = PREFIX + 'gcc'
26    CXX     = PREFIX + 'g++'
27    AS      = PREFIX + 'gcc'
28    AR      = PREFIX + 'ar'
29    LINK    = PREFIX + 'gcc'
30    TARGET_EXT = 'elf'
31    SIZE    = PREFIX + 'size'
32    OBJDUMP = PREFIX + 'objdump'
33    OBJCPY  = PREFIX + 'objcopy'
34
35    DEVICE  = ' -mcmodel=medany -march=rv64imafdc -mabi=lp64 '
36    CFLAGS  = DEVICE + '-ffreestanding -flax-vector-conversions -Wno-cpp -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -fdiagnostics-color=always'
37    AFLAGS  = ' -c' + DEVICE + ' -x assembler-with-cpp -D__ASSEMBLY__ '
38    LFLAGS  = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,_start -T link.lds' + ' -lsupc++ -lgcc -static'
39    CPATH   = ''
40    LPATH   = ''
41
42    if BUILD == 'debug':
43        CFLAGS += ' -O0 -ggdb -fvar-tracking '
44        AFLAGS += ' -ggdb'
45    else:
46        CFLAGS += ' -O2 -Os'
47
48    CXXFLAGS = CFLAGS
49
50DUMP_ACTION = OBJDUMP + ' -D -S $TARGET > rtthread.asm\n'
51POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'
52