OpenCV.Framework does not compile for the armv7s architecture

Question

I am working on an iphone application using openCV framework. Everything was working fine. however lately with the release of iOS 6 and XCode 4.5 I was migrating my project to X

Answer 1

Clone the Xcode project for opencv and update the opencv git submodule as per the README:

https://github.com/jonmarimba/OpenCV-iOS

Check the build settings, make sure iOS6 and armv7s are present. Click build. You should now have the armv7s compatible .a files. I just tried this:

$ file libopencv_core.a 
libopencv_core.a: Mach-O universal binary with 2 architectures
libopencv_core.a (for architecture armv7):  current ar archive random library
libopencv_core.a (for architecture cputype (12) cpusubtype (11)):   current ar archive random library

The last entry is for armv7s as per my research so far.

Edit: The last entry is indeed armv7s. I ran the Xcode's own lipo info command:

$ xcrun -sdk iphoneos lipo -info libopencv_core.a 
Architectures in the fat file: libopencv_core.a are: armv7 armv7s