ShareKit build problem on xCode5: "Undefined symbols for architecture arm7"

You may meet the problem when you use iOS 7 + xCode 5 to build your project with ShareKit.

The iPhone simulation build can work, but when you switch to iPhone target, the xCode 5 will report "linking error, Undefined symbols for architecture arm7 ......".

The Problem mainly is unsuccessful build of "libGTLTouchStaticLib.a".

the solution:   quite xcode 5,  open the GTL.xcodeproj, make a build for simulation and iOS target.

and check the "libGTLTouchStaticLib.a" generated, then go back to your project, click "Product"->"Clean",  and "Build" it again.

this should be a XCode 5 problem.