http://qs321.pair.com?node_id=411233


in reply to 'use lib' versus '-I'

I assume use lib loads the module at another time than -I

Testing will show that -I and use lib does exactly the same:

$ perl -IDoc -Ilib -e 'print join(":", @INC), "\n";' Doc:lib:/usr/lib/perl5/5.8.3/i586-linux-thread-multi:... $ perl -e 'use lib qw(Doc lib); print join(":", @INC), "\n";' Doc:lib:/usr/lib/perl5/5.8.3/i586-linux-thread-multi:...
So your problems must stem from something else - probably that the current directory is not what you expect when running under mod_perl.

Try using absolute paths in your use libs.