They're only warnings and sometimes (in fact often) those warnings *are* harmless. It's only if you subsequently get "unresolved external symbols" in relation to symbols that are resolved by any of those import libs that you have to take any action.

If that happens, try adding $Config{libs} (see perl -V:libs for the list) to the command that's producing those unresolved external symbols.

What are you getting when you run 'nmake' (or 'dmake', if that's the flavour of make you're using) ?

Cheers,
Rob