arm-none-eabi-as error for STM320f on mac

Question

In terminal, I try to convert assembly code to object code

arm-none-eabi-as -o sample.s sample.o

Assembler messages:

Error: can't open main.o for reading: No such file or directory

And deletes sample.s at that directory I was operating in.

Answer 1

-o defines the output file name you need to do

arm-none-eabi-as -o sample.o sample.s