Xcode cannot run using the selected device

Question

I am receiving the following error when I try to run my Xcode iOS project:

Xcode cannot run using the selected device. Choose a destination with a supported architecture in order to run on this device.

I have had this error for a while now. I was able to get around it by using an actual device instead of a simulator, but now that doesn't work either. I haven't changed a single setting in the project since creating it, all that I have changed is the code itself. This has also happened before and the only way I fixed it was to create a new project and start from scratch and now it is happening again from that. I am so frustrated! I have no idea what to do. What info do I need to provide to help diagnose this? I am using the facebook sdk 3.1 if that means anything.

Thanks

Answer 1

Target -> Build Settings -> Build Options set the "Compiler for C/C++/Objective-C" - "Default compiler (Apple LLVM 5.0)" and the issue will be solved

Answer 2

• Clean up your project using Clean, Clean folders, Delete derived data.
• Delete all schemes from 'manage schemes'. Recreate them, and build using any of them that contains a version of iPhone simulator (the one that worked earlier).

If that doesn't work, try this:

• Clean up your project using Clean, Clean folders, Delete derived data.
• Using your favourite editor, try clearing all the profile strings from your project.pbxproj file (the one that you see when you open your xcode project using 'Show Package Contents' command).

See below image - you must delete all lines containing 'Provisioning Profile' till the ; character.

• Then restart xcode. Select the profile using automatic profile selector and build using an iphone simulator scheme.