Simplified building of OpenCV on iOS is here
Check this out. Instead of several steps, some ugly CMake voodoo, and some work in the shell, now all you have to do is pull down a git repo to make OpenCV work on iOS. A couple of people have tried it out and found it functional. Let me know at "my first name at this domain dot calm" whether it works for you. If anyone would like to use the example project to make instructions on how to make it work in a new project or even generate some project templates, get in touch or give it a go and submit a pull request on github.