Step 4 or 5. Select Compiler
This window will be populated with the compiler from the Atmel project, if it is available in MPLAB X IDE. You may select a different compiler from the list, but you may want to keep the original project compiler until after import to ensure your project is working correctly. Then you can select a different compiler for your project if you want.
The level of tool support for the selected device will be displayed next to the tool name.
If you do not see a compatible compiler listed, click Cancel and follow the directions under “Basic Tasks>Create New Project.”