FAQ 8.49 How do I add a directory to my include path (@INC) at runtime?

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8.49: How do I add a directory to my include path (@INC) at runtime?

Here are the suggested ways of modifying your include path, including
environment variables, run-time switches, and in-code statements:

the PERLLIB environment variable
$ export PERLLIB=/path/to/my/dir
$ perl program.pl

the PERL5LIB environment variable
$ export PERL5LIB=/path/to/my/dir
$ perl program.pl

the perl -Idir command line flag
$ perl -I/path/to/my/dir program.pl

the use lib pragma:
use lib "$ENV{HOME}/myown_perllib";

The last is particularly useful because it knows about machine dependent
architectures. The lib.pm pragmatic module was first included with the
5.002 release of Perl.



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