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Alien::Base is a base class and framework for creating Alien 
distributions.  The goal of the project is to make things as simple and 
easy as possible for both developers and users of Alien modules.

Alien is a Perl namespace for defining dependencies in CPAN for 
libraries and tools which are not "native" to CPAN.  Alien modules will 
typically use the system libraries if they are available, or download 
the latest version from the internet and build them from source code. 
These libraries can then be used by other Perl modules, usually modules 
that are implemented with XS or FFI.