4.5.17 Which Libraries Get Included by Default?
The compiler automatically includes any applicable standard library into the build process when you compile. So, you never need to control these files. However, there are some libraries you must remember to include, such as any libraries that do not come with the compiler. One can tell which standard libraries have been used in the resulting compiled image by inspecting the MAP file. Archive members included from the standard library will be in a listing that is associated with the symbol that prompted the inclusion of a particular standard library archive within the MAP. For details on standard libraries, consult the following documents. It is available for download from the Microchip Technology website, www.microchip.com.
Microchip Unified Standard Library Reference Guide (DS-50003209)
“MPLAB® XC-DSC Language Tools Libraries Reference Manual” (DS-50003591)