Download the latest release the laste chip list. select here and review the list. The Microchip LF range is support via the F range driver - if you have a 16LF or 18LF microcontroller it is supported via the 16F or 18F microcontroller driver.
If your chip is not shown in this list please ask via the forum.
If you find an issue with a chip that is in the list, please post a message on the GCBASIC forum, and we will attempt to fix the issue as soon as possible.