remove more warnings

configure

@@ -506,7 +506,9 @@ sub secondary_variables
                     my $s = remws($f->{$x});
                     my $prl = '$'.$x.' .= " ".$s." ";'; 
                     #print "PERL $prl\n";
+                    no warnings;
                     eval $prl;
+                    use warnings;
                 }
             }