2.3 Hosts and Licenses
The MPLAB XC8 C Compiler is available for several popular operating systems. See the compiler release notes for those that apply to your compiler version.
The compiler can be run with or without a license. A license can be purchased and applied at any time, permitting a higher level of optimization to be employed. Otherwise, the basic compiler operation, supported devices and available memory when using an unlicensed compiler are identical to those when using a licensed compiler.