use strict;
use warnings;

use XML::Twig;
use File::Spec (qw/canonpath/);

print File::Spec->canonpath ('c:\\x/y\\z/../../p/q\\r.txt');
##</code><code>##

"canonpath" is not exported by the File::Spec module
Can't continue after import errors at noname.pl line 5
BEGIN failed--compilation aborted at noname.pl line 5.