can't link with a main executable file

Question

Changed my deployment target to from 8.0 to 7.0.

Using Xcode 6 with latest iOS8 as base sdk. Getting this error when building for iOS7.1 device:

ld: can\'t l

Answer 1

I had a mismatch in values between on "Build Active Architecture Only" which was "Yes" for my test app, but "No" for my unit test target. Make sure these values are identical.