Or just skip the "PREFIX=..." and "make install" and upload both blib/lib and blib/arch to your perl-modules subdirectory (preserving subdirectory structure). That is, any file or subdirectories directly in blib/lib or blib/arch should go directly into your .../lib directory.
Also "make test" implies "make" so you can do just:
Also, it is best to be sure your perl-modules directory (for example, /www/lib in the original node) is not being published by the web server. Even a "permission denied" response is not as good as just having that directory outside of the directories that your web server even looks at.