Failed Xcode build: no rule to process file for architecture armv6

Question

Building my iOS App in Xcode 4.5 results in Dependency Analysis Warnings for every source file:

warning: no rule to process file of type sourcecode.c.objc for architecture armv6

This eventually results in a missing binary. Any ideas what's wrong here?

Build settings: armv6 armv7 Valid Architectures and iOS 4.3 Deployment Target.

Answer 1

Xcode 4.5 does not support building armv6 binaries anymore.

Answer 2

Set Valid Architectures to armv7.