Framework not found AudioUnit

Been banging my head agains the wall for awhile now.
My Xcode project went a little haywire while refactoring, and refused to build. I've squashed all the other errors, except one last linktime error:

Framework not found AudioUnit

I have the AudioUnit headers, the AudioUnit.framework is included in my project as it was before (Targets > Get Info > General > Linked Libraries > + ), but I cannot figure out why it does not work now. AudioToolbox.framework is also included.

Remove AudioUnit.framework and add CoreAudio.framework

I had already tried swapping out all available audio frameworks (AudioToolbox, CoreAudio and AudioUnit) and no configuration worked. Something funky with Xcode was going on.

I reinstalled Xcode and migrated the code to a new project. Now it builds fine with the exact same frameworks as I had before. A frustrating solution, but a working one nonetheless.

Helped for me: removing AudioUnit.framework, then adding AudioToolbox.framework, Clean, Build

In my case compiler lies about AudioUnit, in fact for project was required only AudioToolbox.framework.