::::::::::::::
perlexe.pl
::::::::::::::
#!/usr/bin/perl
use strict;
use warnings;


BEGIN { 
  $perlpkg::var_our = "foo";
  $perlpkg::var_my  = "foo";
  $perlpkg::var_lcl = "foo";
}
print "\noml : $perlpkg::var_our $perlpkg::var_my $perlpkg::var_lcl\n";

require "perlpkg.pm";

$perlpkg::var_our = "bar";
$perlpkg::var_my  = "bar";
$perlpkg::var_lcl = "bar";
print "oml : $perlpkg::var_our $perlpkg::var_my $perkpkg::var_lcl\n\n";
::::::::::::::
perlpkg.pm
::::::::::::::
package perlpkg;

our $var_our;
my  $var_my ;
local  $var_lcl;
print "    oml : $var_our $var_my $var_lcl\n";

$var_our = "baz";
$var_my  = "baz";
$var_lcl = "baz";
print "    oml : $var_our $var_my $var_lcl\n";

1;

STDOUT :

oml : foo foo foo
    oml : foo  
    oml : baz baz baz
oml : bar bar