Check out Module::CoreList to see whether a module was part of the core perl release for any given version e.g 
BEGIN {
  for(@your_list_of_modules) {
    die "$0: $_ is unavailable in perl$]\n"
      unless exists $Module::CoreList::version{$]}{$_};
  }
}

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HTH

_________
broquaint

In reply to Re: Detecting if a script uses non-standard module by broquaint
in thread Detecting if a script uses non-standard module by Lorand

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