This distribution generates a Errno package which will define and optionally export all E* constants defined in your system file. The d/Errno.pm file included in the distribution is only a dummy file to emsure CPAN file find a VERSION number. The real Errno.pm file will be created when you run make To build run perl Makefile.PL make make test COPYRIGHT © 1997-8 Graham Barr . All rights reserved. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. Share and Enjoy!