BTW, pp does not actually compile your Perl program. What is does is create a special Zip file containing copies of your Perl program source and as many of the modules and libraries your program depends on, and a copy of the Perl run time environment. If you open the executable with Zip, 7-Zip or similar tool, you can see all the files inside. Sometimes, pp can't determine all the dependencies. The -a option allows you to add any that pp doesn't by itself.

When you run the executable, it automatically extracts the files into a temporary directory on your PC, then runs the extracted Perl environment, giving it the name of your program and any parameters you supplied to the executable.