Thanks @craig.scott
As I mentioned, I can get build now, but weird why didn’t get such errors before.
Yes, I agreed with the slash(/), not backslash(). I guessed it might be backslash on Windows. It’s my fault 
It took me a couple of days to get building the assemble file(startup_xxx.S for the STM32 MCU), okay now.
I could fix it target_link_libraries instead of target_link_options.
Thank you