using my module.pm in different directory error

[t-rex]

Hello Monks, This is my directory structure

urs.pl
src
now this src contains server and client directories
src-> server client
and client contains Yaml_Lib.pm Client_lib.pm Run_lib.pm

now the urs.pl uses the files Yaml_libm.pm and others in the client folder.

I want to know how should I include them in my urs.pl , I checked on this site and I got to know about use lib ‘..’;

but when I do it I still get error that Yaml_Lib.pm and others not found in @INC

use lib ‘src/client/’;
use Yaml_Lib.pm
use Client_lib.pm

Note that this structure (entire scripts) can be in any directory eg; now my pwd is different it could be different on other machine but inside structure(scr/client/) remians constant.

[haukex]

Hi t-rex,

If your module files are always located in the same place in the file system, use

use lib '/absolute/path/to/modules';

If your module files are always located in the same place relative to the script, use

use FindBin;
use lib "$FindBin::Bin/path/to/modules";

Both solutions are independent of the current working directory because they use absolute paths.

Also, you wrote "use Yaml_Lib.pm", I'm assuming you meant "use Yaml_Lib;" because the .pm extension is added automatically by Perl.

Hope this helps,
-- Hauke D

[beech]

See docs for File::FindLib, use use File::FindLib 'src/client';

[hippo]

Quick and dirty: PERL5LIB

Long and clean: use proper namespaces and package your script and modules into a distribution as you would for CPAN. eg. put your modules under a namespace like "App::URS::" which would equate to a directory like App/URS/, install them into the site_perl tree and then your script should use them with lines like:

use App::URS::YAML;

You'll probably have to read up on packages and it would benefit to look at Module::Starter or similar. See also Simple Module Tutorial and How to make a CPAN Module Distribution. It's a long road for sure but well worth it and will make problems like the one you currently have just vanish.

[duyet]

Add a BEGIN{} to your urs.pl which add paths of your pm files to @INC:

BEGIN {
    unshift @INC, './path/to/lib/dir1';
    unshift @INC, '/full/path/to/lib/dir2';
}

[t-rex]

path to lib which change as in lets say i launch script from /tmp/ something and next i launch it from /home/userx/run_auto.... so the path inside run_auto remains constant but where i launch the script from keeps changing...

[Laurent_R]

I am not sure to understand. Are you saying that your modules will not always be in the same place? Or the opposite?