Is there a command line switch or any other easy way that I can check the compatibility of my module with different versions of perl? I understand that if I put use 5.6.1; at the top of a script, the script will have any features later than 5.6.1 disabled. But if I have a module which uses several other modules and so on, I need a quicker way to check what minimum version of Perl to require in my Makefile.PL or Build.PL.
Run your module against Perl::MinimumVersion.