Over this past weekend I ported the build system for chemkit from QMake to CMake. You can see the commit here (it's quite big). CMake is a great system and it is much more powerful and configurable than QMake was.
The impact for users is minimal and the only real change is that now to compile chemkit from source you need to use the following commands:
CMake uses out of source builds which eliminates the clutter of object files in the source directories and moves them all under the build/ directory.
Another nice feature of CMake is its integration with CTest. This allows for all the chemkit auto-tests to be run with just a single command like so:
CTest replaces the old, custom autotest.py script and works quite well.
Overall I am pleased with CMake's performance. I haven't tested it on Windows yet but hopefully, due to its cross-platform nature, it will "Just Work". Let me know if you have any issues building chemkit with the new build system.