CMake: What's the usage of "make depend"?

Question

One of the targets generated by cmake is depend:

The following are some of the valid targets for this Makefile:
... all (the default if no target is provided)
... clean
... depend
... edit_cache
... rebuild_cache

What would be the effect of executing "make depend"?

Answer 1

This builds the dependencies rules of some goals of the Makefile. See http://en.wikipedia.org/wiki/Makedepend