Martin, A couple of observations. Recent versions of Perl already have Digest::MD5 included ("in the core", as we say). I'm afraid I don't have the exact definition of "recent" handy, but I think it was in the 5.8 time frame. If you can run the following command without error, then you've got it:
$ perl -e "use Digest::MD5;" $ If you do need to build it, running the Makefile.PL is only the first step in building an extension. It just generates the description file for MMK or MMS. A typical complete build and install sequence looks like: $ perl Makefile.PL $ MMK $ MMK test $ MMK install