Other options
--cpus <n>
Specify the maximum number of cpus that should be used by the assembly process. If not set explicitly, the process assumes it has access to as much of your computer's cpus as it needs.
-v / --verbose:
This option specifies that verbose reporting should be turned on. This results in various information being written to the terminal when the process is running, include the word size used if you have chosen to allow that to be determined by the assembly program.