Hi Hok,
OpenEars.framework is a totally normal compiled framework with public headers (but it is not a static library project), so I would just continue troubleshooting your issue of not being able to find the headers. Maybe you need to add the headers to Header Search Paths, or maybe you are trying to integrate the framework project as if it were a static library project instead of integrating the compiled framework as if it were something like AVFoundation.framework.