Module file was created by an older version of the compiler

Question

Using Carthage to manage my dependencies, everything runs fine in the simulator.

However, when building for a device I get the following error:

Answer 1

Are you using the right version of xcodebuild? What do you see when you run xcode-select -p? It should be pointed at Xcode 7 if you want to use the frameworks in Xcode 7.

Remove all the derive data rm -rf ~/Library/Developer/Xcode/DerivedData/ && carthage build

Also, When you use carthage update without --no-use-binaries option then it downloads the pre built frameworks which may be built using the old version of xcodebuild.

Alternative way is to use carthage update --no-use-binaries. This way it will compile all the frameworks with the latest Xcode build installed on your Mac.