Mark cmake cached variables as advanced.
mark_as_advanced([CLEAR|FORCE] <var1> ...)
Sets the advanced/non-advanced state of the named cached variables.
An advanced variable will not be displayed in any of the cmake GUIs unless the show advanced option is on. In script mode, the advanced/non-advanced state has no effect.
If the keyword CLEAR is given then advanced variables are changed back to unadvanced. If the keyword FORCE is given then the variables are made advanced. If neither FORCE nor CLEAR is specified, new values will be marked as advanced, but if a variable already has an advanced/non-advanced state, it will not be changed.
Note
Policy CMP0102 affects the behavior of the mark_as_advanced call. When set to NEW, variables passed to this command which are not already in the cache are ignored. See policy CMP0102.
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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.19/command/mark_as_advanced.html