How do I add a configuration variable to my CMake script?

I'd like to add a variable that the us开发者_运维技巧er must set after clicking "Configure" in cmake-gui. Is there a way to do this?

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Using the set command, specify CACHE parameters, e.g.

set(NAME_INCLUDE "default value" CACHE FILEPATH "description")
set(NAME_LIB "default value" CACHE FILEPATH "description")

In the GUI CMake will group all variables with the same prefix.

See the CMake documentation for set.