File::Copy::Link is a Perl extension for replacing a link by a copy of the linked file.
use File::Copy::Link qw(safecopylink);
reads the filename linked to by the argument and replaced the link with a copy of the file. It opens a filehandle to read from the link, deletes the link, and then copies the filehandle back to the link.
does the same as copylink but without the open-and-delete manouvre. Instead, it uses File::Spec::Link to find the target of the link and copies from there.
This module is mostly a wrapper round File::Spec::Link::linked and File::Copy::copy, the functionality is available in a command line script copylink.