Overriding default libs

xajin24 has asked for the wisdom of the Perl Monks concerning the following question:

Hi perlmonks community, I do not have permissions to install modules on my machine so I am looking for a round-about way of doing it. Currently I downloaded the desired module from CPAN and installed it in a local directory. The current machine I am working on is running perl 5.8.8 and has the 1.07 version of threads and I need it to be 1.6+. I've tried use lib /path/ as well as BEGIN{} to try to force my perl script to use the lib I need. The problem is that whenever I try to force the use of my lib, it is still referring to the default one in /usr/lib64/perl5/5.8.8/...

!/usr/bin/perl
use lib "/tmp/custom_module/";
use warnings;
use threads;       
print $INC{'threads.pm'}."<<<< Source of threads\n";
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Re: Overriding default libs by space_monk (Chaplain) on Nov 15, 2012 at 14:23 UTC
There are lots of nodes on this, including: Yes, you can even use CPAN CPAN non-root questions Basically, setting a local version of PERL5LIB is a good way of ensuring that your libraries are used first or exclusively. A Monk aims to give answers to those who have none, and to learn from those who know more.	[reply]
Re: Overriding default libs by tobyink (Canon) on Nov 15, 2012 at 13:30 UTC
Are you sure threads.pm is in "/tmp/custom_module"? Or is it in a subdirectory like "/tmp/custom_module/lib"? `perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'`	[reply]
Re^2: Overriding default libs by xajin24 (Initiate) on Nov 15, 2012 at 13:35 UTC
The exact path of the .pm file is: /tmp/custom_module/lib/perl5/x86_64-linux-thread-multi/threads.pm	[reply]
Re^3: Overriding default libs by tobyink (Canon) on Nov 15, 2012 at 14:15 UTC
Then you should `use lib "/tmp/custom_module/lib/perl5";`. (Perl should be able to guess the "x86_64-linux-thread-multi" bit.) `perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'`	[reply] [d/l]
Re^4: Overriding default libs by xajin24 (Initiate) on Nov 15, 2012 at 14:19 UTC
Re^5: Overriding default libs by tobyink (Canon) on Nov 15, 2012 at 14:24 UTC
Re^3: Overriding default libs by Anonymous Monk on Nov 15, 2012 at 14:15 UTC
`use lib '/tmp/custom_module/lib/perl5/x86_64-linux-thread-multi/';`	[reply] [d/l]
Re^4: Overriding default libs by Anonymous Monk on Nov 16, 2012 at 03:13 UTC
Re: Overriding default libs by Anonymous Monk on Nov 15, 2012 at 14:12 UTC
Search for "installing Perl as a non-root user." Your situation is identical to the one that is faced e.g. by installing a Perl-based web site on a shared host.	[reply]