It seemed a good place to start:[...]
What I'm really wondering is what you are trying to accomplish. Usually, posts in 'Cool uses for Perl' tell you what the use is. Compiling old versions of Perl is interesting but why? Are you planning to create your own new language? Are you targeting a microcontroller or embedded system of some sort? Are you planning to embed it in Lua and then embed that Lua into Perl? A game engine?
It would be interesting if there were a repository for all the old versions of Perl.