Main file:

use strict;
use warnings;
use lib '.';

use MyConfig;
use Data::Dumper;

print Dumper \%config;
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MyConfig.pm:

package MyConfig;

use strict;
use warnings;

use Exporter;
our @ISA = qw(Exporter);

our %config;
our @EXPORT = qw(%config);

%config = (
           foo => 'bar',
           baz => 'bat',
       );

1;
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And the output:

$VAR1 = {
          'baz' => 'bat',
          'foo' => 'bar'
        };
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