Obj-C Modules don't work in workspace

Question

I have some classes that use the new @import module directive and it works fine in my non-workspace project but once I move those files over to a project in a workspace I get the error Unexpected '@' in program similar to this question: @import "Unexpected '@' in program" However I DO have Enable Modules build settings ticked to Yes. The static library in my workspace project also has this option enabled. I tired cleaning the build as well with no luck. Are there any other settings I'm missing?

Answer 1

Make sure you have ticked the enable modules in both your project and target of your static library and main project.

Answer 2

Are you using Objective-C++? @import does not work in .mm files.