3.4.15 Cpu Option
The -mcpu=device
option must be used to specify
the target device when building. This is the only option that is mandatory.
For example -mcpu=18f6722
will select the PIC18F6722
device. To see a list of supported devices that can be used with this option, use the
-mprint-devices
option (3.4.20 Print-devices).