6.1.29 Edf

The --edf=file specifies the message description file to use when displaying warning or error messages. The argument to this option should be the full path to the message file. Most applications contain an internal copy of the message file, so this option is not normally required. Use this option if you want to specify an alternate file with updated contents.

A message description file is shipped with the MPLAB XC8 C Compiler and is located in the compiler's pic/dat directory. The shipped file is called build_en.msgs. A build date (yyyymmddhhmmss format) will appear in the file's name and may help you identify more up to date files.