To use CVS, you must have it installed on your system. You may wish to use the Cygwin tools on Windows platforms, or WinCVS which provides a very nice GUI to CVS.
The source is accessed by checking out a read-only version of the CMake source code. (Only developers have write-access to the repository. Contact Kitware at kitware@kitware.com if you require write access.) Use the following commands.
cvs -d :pserver:anonymous@public.kitware.com:/insight/cmakecvsroot login
(respond with password cmake)
Follow this command by checking out the source code:
cvs -d :pserver:anonymous@public.kitware.com:/insight/cmakecvsroot co CMake