Can somebody please explain me what should be in the folder perl5.10/lib/site_perl/?

When one builds and installs perl from source, site_perl will be empty (if it even exists).
Any non-core modules that the user subsequently installs will go into site_perl (creating that directory in the process if needs be).
With the system perl, it's recommended that additional modules be installed using the system's package manager. I don't know if the system's package manager will put those additional modules into site_perl.

I'm not aware of any package that should require the presence of site_perl. site_perl should just be one of a number of locations that are searched when a module is to be loaded - and it doesn't matter to perl which one of those (@INC) directories contain the module, so long as least one of them does.
And it doesn't matter to perl if one or more of those directories don't exist.
If the module exists in multiple @INC directories perl will load the one that it finds first.

Cheers,
Rob

In reply to Re: site_perl files by syphilis
in thread site_perl files by yaklichk0719

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