编译出错string.h

Mr_wang

cJSON.c.text.parse_value+0xee): undefined reference to `__muldf3'
cJSON.c.text.parse_value+0xf8): undefined reference to `__floatsidf'
cJSON.c.text.parse_value+0x104): undefined reference to `__adddf3'
cJSON.c.text.parse_value+0x174): undefined reference to `__muldf3'
cJSON.c.text.parse_value+0x17e): undefined reference to `__floatsidf'
cJSON.c.text.parse_value+0x186): undefined reference to `__adddf3'
cJSON.c.text.parse_value+0x18a): undefined reference to `__fixdfsi'
cJSON.c.text.parse_value+0x1a0): undefined reference to `__muldf3'
cJSON.c.text.parse_value+0x1ca): undefined reference to `__fixdfsi'
cJSON.c.text.parse_value+0x36a): undefined reference to `__muldf3'
cJSON.c:(.text.parse_value+0x374): undefined reference to `__floatsidf'
cJSON.c:(.text.parse_value+0x380): undefined reference to `__adddf3'
cJSON.c:(.text.parse_value+0x392): undefined reference to `__subdf3'
./apps/sampleGW_uart/cJSON/c_fun_lib.o: In function `power_unsigned_exp':
c_fun_lib.c:(.text.power_unsigned_exp+0x18): undefined reference to `__muldf3'
c_fun_lib.c:(.text.power_unsigned_exp+0x24): undefined reference to `__muldf3'
./apps/sampleGW_uart/cJSON/c_fun_lib.o: In function `_pow':
c_fun_lib.c:(.text._pow+0x1e): undefined reference to `__divdf3'
make[1]: *** [sampleGW_uart.elf] Error 1
make: *** [all] Error 2


这种情况如何解决

TL_YB

你好，
8258不支持数学库