Building Perl modules that have dependencies

[T o n g <mlist4suntong@yahoo.com>]

Hi, 

How to build to Debian source packages from Perl modules that have 
(alien) dependencies? I.e., the dependencies are not exist yet.

- Can I specify multiple Perl modules to cpan2dsc/dh-make-perl?
- Or should I build the dependencies into binary packages and install 
them first? 
- Or should I build everything into Debian source packages, including the 
dependencies, as if they are independent of each other? 

Thanks