I would like to implement/use-existing a cross platform configuration settings tool like about:config in Firefox. It would have to work on Windows and Mac. Are there any libraries or design patterns out there that people recommend?
Also, if I were to use a library, it would have to be "free as in beer" and couldn't be a GPL license. The apache license would be ok.
The Windows side uses C++/MFC and the Mac side uses Objective-C. The configuration file would have to be read on both platforms, but they don't have to share the same library.