How to detect & avoid the use of private APIs in third party libraries

Question

Now that Apple is running some kind of static analysis to automatically check for private API use, a number of people have been caught because of the Three20 library. I use

Answer 1

You could try running nm on the object files instead of the linked executable:

nm -g -j *.o  | sort | uniq

The objects should be in the build/<app>.build/*/<app>.build/Objects-normal sub-directory.

You're seeing a reference to AudioServicesPlaySystemSound because one of the functions you did call in turn calls AudioServicesPlaySystemSound.

Objective C calls won't generally show up in nm dumps, you'll need to use otool for that:

otool -ov <object file>

Answer 2

Use this dev tool, App Scanner. It scans your .app file for private API methods. A future release will also check for private API instance variables.