ARGV elements are undef, not a null string, when not supplied. Try the following to see... 
use Data::Dumper;

# Because of my C++ background
use constant PROJECT => $ARGV[0];
use constant ARCHIVE => $ARGV[1];

# debuggging
print "PROJECT value = " . PROJECT . "\n";
print "ARCHIVE value = " . Dumper(ARCHIVE) . "\n";

     if( ARCHIVE eq "") {
          warn( "No archive file was supplied.\n");
          exit 1201;
     }

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In reply to Re: Invalid use of constant pragma? by mikeB
in thread Invalid use of constant pragma? by dhable

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