CLICOLORΒΆ
Added in version 3.21.
This is a CMake Environment Variable. Its initial value is taken from the calling process environment.
Set to 0 to tell command-line tools not to print color
messages even if connected to a terminal.
This is a common convention among command-line tools in general.
See also the CLICOLOR_FORCE environment variable.
CLICOLOR_FORCE, if activated, takes precedence over
CLICOLOR.
See the CMAKE_COLOR_DIAGNOSTICS variable to control
color in a generated build system.