-bfd_boolean bfd_plugin_target_p (const bfd_target *);
-bfd_boolean bfd_plugin_specified_p (void);
-bfd_boolean bfd_link_plugin_object_p (bfd *);
-void register_ld_plugin_object_p (const bfd_target *(*object_p) (bfd *));
+bool bfd_plugin_target_p (const bfd_target *);
+bool bfd_plugin_specified_p (void);
+bool bfd_link_plugin_object_p (bfd *);
+void register_ld_plugin_object_p (bfd_cleanup (*object_p) (bfd *));