4.6.1.5 Cpu Option
The -mcpu=device
option is mandatory and
must be used to specify the target device when building. 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 (Print-devices).
This option selects only the target device; it does not indicate what version of the device
support files to use. Additionally, use the -mdfp
option (see Dfp Option) for this purpose.