Typically, you install a Perl module from source using something like this:
In your case, you would modify the make install line with an installation path -- you could put it under /root, but under /opt might be more appropriate. No, I don't know what environment variable is appropriate -- you might have to update the Makefile to accomplish this. It's open source -- help yourself.tar zxf Digest-SHA1-2.13.tar.gz cd Digest-SHA1-2.13 perl Makefile.PL make make test make install
Then, in order to use this module, installed in a non-standard location, you would just add a use lib line in your code:
and call the module's methods. You probably don't want to mess around setting PERLLIB, as show in your example... use lib '/path/to/your/installation'; use Digest::SHA1;
Above all, it helps to understand the steps that you're taking when installing a module -- this isn't black magic, it's actually quite simple.
- You're unpacking the tarball archive into the default location;
- You're going into that location, and running the a script that will build a Makefile for your specific installation;
- You're running the Makefile in order to create all of the pieces required for testing and installation;
- You're running the tests, to make sure that the module code works correctly on your specific installation; and finally,
- You're installing the module for use in applications.