One Quickie

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Fixing undefined symbols when building plugins (Xcode->General)

If you have a plugin defined as a "Cocoa Bundle" target in Xcode, and your plug-in inherits from a class that's defined in the application, you may get a build error like:

ld: Undefined symbols:
.objc_class_name_BWTrackerPlugin

You can fix this by adding -undefined dynamic_lookup to the "Other Linker Flags" of the Build Tab of the Target Settings for your plugin (whew!). You also need to make sure that the "Mac OS X Deployment Target" is 10.2 or later before using this flag.