Note that code written for mod_perl 1 will require changes to work with mod_perl 2. See apache.org's "Reference to mod_perl 1.0 to mod_perl 2.0 Migration" for help with that, if needed.

Thank you

As resident wet-blanket trying to do you a solid I'll add, you should not be using mod_perl unless you have a specific need to do so that is impossible to satisfy without it. uWSGI—even FastCGI—is a better application engine unless you need access to apache's guts or request cycle/pipeline. If you’re not married to apache for some reason, I’d suggest looking at nginx as your webserver.