how to stop xcode5.1 building for 64bit

OP is posted the solution along with the question itself. But I feel it would be better to add it as an answer. In Xcode 5.1 apple made significant changes to the architecture section. They made arm64 as part of Standard architectures. That means the projects using the default setting will be automatically build for arm64 also. So what you will do if your app does not support arm64?.

Doc says:

Projects not able to support 64-bit need to specifically set the architectures build setting to not include 64-bit.

How to do that?

  1. Goto Targets–>Build Settings–>Architectures–>Architectures

  2. Double click on the architecture will popup a menu. Choose others

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  3. Delete the existing row – $(ARCH_STANDARD). Add the required architectures one by one

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  4. Now your architecture section will look like this

    enter image description here

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