You can explicitly refer to variables and functions within a package using the :: package qualifier.

Here is the below sample module.

MyModule.pm

package MyModule;

use strict;
use warnings;


sub func1  
{ 
      your code here...
}
sub func2  
{
      your code here...
}

1;
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Use the above code into you code as,

use MyModule;
use strict;
use warnings;

MyModule::funct1();
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So here MyModule::funct1() is the package qualifier, to access the function without creating object and exporting function from MyModule namespace into main namespace.