Sitworld: CPAN Library for Perl Projects

robins2011

John Alvord, IBM Corporation

jalvord@us.ibm.com

Draft #4 – 5 January 2015 – Level 2.00000

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Introduction

The Sitworld blog posts include a number of Perl projects. Some of them use Comprehensive Perl Archive Network or CPAN packages.

If you are implementing a project on your own workstation adding the packages is a best practice.

However if you are implementing on a shared production system, that might be difficult or impossible. If you do not have internet access or are less experienced with Perl the challenges can be severe. To manage this issue this post has a zip file  which contains a directory which with needed CPAN packages. See the History section following the summary if you need earlier levels. These are only several of almost 25,000 useful packages.

A Perl invocation parameter causes that directory to be searched before the system libraries. For most Sitworld projects that will run ok without changing the system installed  Perl libraries.

There are two libraries. Version 1.0000 is for Perl 5.16 and version 2.00000 is for Perl 5.20. The main difference in 5.20 is absence of SOAP::Lite. The Perl 5.20 enabled packages now use LWP::UserAgent. That is needed for some future multi-threading requirements.

Limitation

This pre-system library does not work if a CPAN package contains C source code. In that case it must be compiled and such a package cannot be delivered this way. Right now the limitation applies only to the Situation Audit project.

Installation Process

The zip files are 5.20 and 5.16. It contains two sets of files.

1) Windows – a directory named “inc”

2) Linux/Unix – a file named unix-cpan-inc.tar

For Windows you simply copy the directory somewhere convenient for the project.

For Linux/Unix you transfer it [in binary!!] to the system where it will be used. Then un-tar it

tar -xf unix-cpan-inc.tar

That process will create a directory “inc”.

Usage

The following is added to the program invocation before the Perl program name “-Iinc”. For example for Agent Health survey it would look like this

perl -Iinc itm_tems_health.pl  <rest of parms>

Note: Just following the first dash is a capitol i and not a lower case L.

Summary

This CPAN library for Sitworld packages was developed for Agent Health Survey and is now used for other projects.

Sitworld: Table of Contents

History and Earlier versions

CPAN packages – if latest does not work try an earlier version and please give feedback.

cpan-inc.2.01000

Perl 5.20, remove unneeded lwp/protocol/https.pm

cpan-inc.2.00000
Perl 5.20 project CPAN library

cpan-inc.1.00000
Perl 5.16 project CPAN Libary

cpan-inc.0.99000

Photo Note: A Flutter of Robins – Spring 2011

 

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