Install and manage Simulator runtimes from the command line Download the Simulator runtime you want to install from the developer website. You can run projects on previous versions of the Simulator runtime, but you need to install the current version to build them. Applications/Xcode. Select a version, and click Download & Install. I followed Apple’s instructions, and I get this: If you’ve gotten Xcode from channels other than the Mac App Store or Apple’s Developer website, make sure to check your copy. Whether you downloaded Xcode from Apple or received Xcode from another source, such as a USB or Thunderbolt disk, or over a local network, you can easily verify the integrity of your copy of Xcode. When you download Xcode from the Apple Developer website, the code signature is also automatically checked and validated by default as long as you have not disabled Gatekeeper.
When you download Xcode from the Mac App Store, OS X automatically checks the code signature for Xcode and validates that it is code signed by Apple.
This was caused by developers, mostly in China, installing tweaked versions of Xcode, the app used to develop apps for iOS and OS X.Īpple has published instructions explaining how to validate your version of Xcode. Apple’s App Store has seen a number of compromised apps being introduced, infected with the XcodeGhost malware.
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