While I can understand where your concern could arise from, the different versions of GCC should work nicely with each other... The compiler should generally be of little concern as far as program intercompatibility is concerned except for certain things, which are really more operating system specific than compiler specific. In general, very few issues, if any, should arise. The main key being that everything gives the right output and takes the right input... and they should under all versions of GCC. It's much more of a problem when you are dealing with binaries and files on different OS's, but hey, you're not ;-)

Just Another Perl Backpacker