-E CMake command mode.
For true platform independence, CMake provides a list of commands that can be used on all systems.
Run with -E help for the usage information. Commands available are: chdir, compare_files, copy,
copy_directory, copy_if_different, echo, echo_append, environment, make_directory, md5sum, remove,
remove_directory, rename, tar, time, touch, touch_nocreate. In addition, some platform specific
commands are available. On Windows: comspec, delete_regv, write_regv. On UNIX: create_symlink.
Remove matching entries from CMake cache.
This option may be used to remove one or more variables from the CMakeCache.txt file, globbing
expressions using * and ? are supported. The option may be repeated for as many cache entries as
Use with care, you can make your CMakeCache.txt non-working.