Xcode 8 Objective-C category warning

Question

I\'m using Xcode 8 and Swift 3.0. What does this error message mean?

ld: warning: Some object files have incompatible Objective-C category definition

Answer 1

For me the issue was that I was using a third-party framework from a vendor built with Xcode 7 in my Swift 3 application built with Xcode 8. Because the framework was a compiled binary, the only option I had was to ask my vendor for a new framework built with the latest version of Xcode.