Xcode 4.5 : Undefined symbols for architecture armv7s?

Facebook sdk isn't compiled for armv7s, but you can compile yourself.

As an interim solution you can remove armv7s from the Architectures in the Xcode project. Change "$(ARCHS_STANDARD_32_BIT)" to "armv7". When the libraries are updated change back to re-add armv7s support.

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