Cmake is a makefile generator. The output of cmake is a series of makefiles. That's it. If you need to build a project and you don't have make, nmake, jmake or whatevermake in your system them cmake does nothing to get your project built.
Although you're conflating project transcoders with makefiles, nevertheless that's the whole point of cmake: generate makefiles that are used by some third-party program to actually build the software.
