iOS - file does not contain an armv7s slice

Question

I cannot build and test on devices because Xcode gives me this error:

ld: file is universal (3 slices) but does not contain a(n) armv7s slice: /.../Classes/AddThis/libAddThis.a for architecture armv7s

How do I update this library to support armv7s?

Answer 1

Try setting the Build Active Architecture Only to 'YES' in the Project Build settings.

Answer 2

libAddThis.a needs to be built for the armv7s architecture. If you don't have control over this then you will need to remove armv7s from valid architectures as you did.