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When the services of an Ada DLL are no longer needed, the client code should
invoke the DLL finalization routine, if available. The DLL finalization
routine is in charge of releasing all resources acquired by the DLL. In the
case of the Ada code contained in the DLL, this is achieved by calling
routine adafinal generated by the GNAT binder
(see Binding with Non-Ada Main Programs).
See the body of Finalize_Api for an
example. As already pointed out the GNAT binder is automatically invoked
during the DLL build process by the gnatdll tool
(see Using gnatdll).