print("\$variable1 = $Mylib::variable1\n");  # OK

##</code><code>##

use Mylib qw( $variable1 );           # If Mylib exports $variable1
print("\$variable1 = $variable1\n");  # OK

##</code><code>##

our $variable1;
local *variable1 = \$Mylib::variable1;  # Create an alias.
print("\$variable1 = $variable1\n");    # OK

##</code><code>##

use Data::Alias qw( alias );
alias my $variable1 = $Mylib::variable1;  # Create an alias.
print("\$variable1 = $variable1\n");      # OK