Using addons in openFrameworks might create problems, compiler errors, files not found etc. Therefore, I recommend that you use projectGenerator, an app that comes within the openFrameworks folder (inside the “projectGenerator” folder).
More info:Â http://www.openframeworks.cc/tutorials/introduction/002_projectGenerator.html
(note: in ofxBox2d, testApp.h, there is a typo, you have to fix it (line 7):Â ofxiOS >Â ofxiOSApp)