I have a base module that I want to auto-generate information depending on the package that is originating the call. However, I cannot think of anything that provides that context. Here is my non-working example: 
#!/usr/bin/perl

use strict;
use warnings;

print "Calling: " . Calling::package_name() . "\n"; # Displays 'main' 
+and needs to be 'Calling'
print "Calling2: " . Calling2::package_name() . "\n"; # Displays 'main
+' and needs to be 'Calling2'

package Test;

sub package_name { return (caller)[0] } # What to replace caller with?

package Calling;

use base 'Test';

package Calling2;

use base 'Test';

[download]

Suggestions?

Update: kyle pointed out, that it complains about an undefined subroutine. It appears that you cannot inherit a subroutine and try to call it without passing either a blessed reference or the package name to it.

In reply to Identify the package a subroutine is being called from by Herkum

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