#!/your/perl/here
use strict;
use warnings;
use Getopt::Declare;
unshift @ARGV, -one => 1, -two => 2        # <- defaults
    unless "@ARGV" =~ /(-help|-version)/; 

my $options = Getopt::Declare->new(<<'SPEC');
    -one <one:i>        first param:  (default = 1) [repeatable]
                        {$::one = $one;
                         defer{
                            die "\t -one ($::one) > -two ($::two)\n"
                                if $::one > $::two
                         }
                        }
    -two <two:i>        second param: (default = 2) [repeatable]
                        {$::two = $two}
SPEC
print "one = $options->{-one}\n";
print "two = $options->{-two}\n";
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