Xcode: Module file was created by a newer version of the compiler

2
votes

I have a project built with Xcode 6.2. I included a new framework that was built with Xcode 6.3 and I am getting the following compile time error:

Module file was created by a newer version of the compiler

I haven't updated to 6.3 because it requires me to update my OS. I tried the following already, much to no avail.

  1. Xcode: menu Product => Clean
  2. Xcode: menu Product => Clean (while holding Option/Alt)
  3. Removed DerivedData folder.

Is this a general issue that frameworks ALWAYS need to be built into projects with the same version of Xcode?

The deployment target version of the framework is 8.0. It contains Swift code.

1
iosxcodeswiftbuildxcode6

1 Answers

3
votes

The reason this error is occurring is because there was a Swift version upgrade between Xcode 6.2 and 6.3. Xcode 6.3 introduced Swift 1.2 which apparently is not backward compatible with Swift 1.1. Since a particular Swift version ships with a particular version of Xcode you get the error above.