Documentation for sub cglobal assembled from the following pages:

Language documentation: Native calling interface §

From Native calling interface

(Native calling interface) sub cglobal §

sub cglobal($libname, $symbol, $target-type) is export is rw

This returns a Proxy object that provides access to the extern named $symbol that is exposed by the specified library. The library can be specified in the same ways that they can be to the native trait.