I have started a pure Objective-C++/C++ project (for cross platform usage).

I can't get the incremental compilation of the source files. It seems all files are recompiled all the time.

I generate the project with a ruby script and the xcodeproj gem from CocoaPods project. So I might have missed some build settings but I'm not sure how this could happen. I think it worked in the past.

Any idea how to troubleshoot this?

[EDIT]: In the meantime i found out that incremental compile works fine in release config but not in debug configs. So some of the new automagic that Apple is doing and never really documents well seems to collide with the compilation process.