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I have a application built on IOS 4.1 but recently I have upgraded my XCODE to 3.2.6 which supports IOS 4.3.

How can I run this application in this XCODE. All I am seeing is the "Base SDK Missing" message even though I am choosing the deployment target SDK as 4.1.

Please suggest.

Peter Hosey
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Abhinav
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    Next time, please try searching. For example, search for "Base SDK Missing", you might be surprised by what turns up... – user160917 Jan 28 '11 at 17:54
  • possible duplicate of [Install xCode 3.2.3 w/ iPhone SDK 4, get "Base SDK missing", can't see other SDKs](http://stackoverflow.com/questions/3161385/install-xcode-3-2-3-w-iphone-sdk-4-get-base-sdk-missing-cant-see-other-sdks) – Ben Lings Jul 25 '11 at 10:59
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    @Intentss ironically, this question is now #1 hit on Google for "Base SDK Missing" – Yule Nov 13 '12 at 14:00
  • which really shows the quality of Apples documentation :-) – Pete - MSFT Aug 16 '15 at 16:54

2 Answers2

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As well as the Deployment Target, you need to set the Base SDK.

Go to the Project menu, then Edit Project Settings. Select the Build tab, and near the top, there is a Base SDK setting.

Sometimes, you also need to clean all targets, and restart Xcode for it to work properly.

Dave
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It's also worth keeping the last released version of Xcode, and install the latest beta in a separate folder. (See Can I have multiple Xcode versions installed? for details on how this is done.) Use the beta to test beta features only, and the final for all your other development work.

Community
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SteveCaine
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