Yes. You can do something like:

package MyConfiguration;

our @EXPORT = "get_config";
use base "Exporter";

our $CONFIG = load_vars();

sub get_config() {
  $CONFIG
}

sub load_vars {
 ...
}

1;
[download]

Then you just use MyConfiguration; everywhere you need to access the configuration and call get_config whenever you need it.

Update: liz was kind enough to point out that "use" isn't spelled "base" ;-)