[CMake] Hierarchical Menu for options

[Brad King]

James Bigler wrote:
> Is there a way to create hierarchical options tweakable by the build? 
> The list I currently have is getting quite long.
> 
> I want something like:
> 
> SCENE_BUILDS:
>   BUILD_SCENE_0
>   BUILD_SCENE_1
>   ...
>   BUILD_SCENE_FANCY_GEOM
> 
> ADVANCED_BUILD_OPTIONS:
>   BUILD_INTERNAL_MALLOC
>   ASSERTION_LEVEL
>   EXIT_STRATEGY
> 
> THIRD_PARTY_LIBRARY_OPTIONS:
>   THIRD_PARTY_INCLUDE_PATH
>   THIRD_PARTY_LIBRARY_PATH
>   TEEM_INSTALL_PATH
>   FOUND_TEEM_INCLUDE
>   FOUND_TEEM_LIB
>   FOX_INSTALL_PATH
>   FOX_STATIC
>   FOUND_FOX_INCLUDE
>   FOUND_FOX_LIB
> ...
> 
> SCENE_BUILDS, ADVANCED_BUILD_OPTIONS and THIRD_PARTY_LIBRARY_OPTIONS 
> appear in the main listing, and when you click or select one of them you 
> get a new menu list with the options grouped under each item.
> 
> This would provide a convenient method to group common configurations to 
> make things a bit easier for users to get to what they need.
> 
> Does such a feature exist?

Not currently, but CMake does provide two levels.  If you use the 
MARK_AS_ADVANCED command for a cache entry then it will show up only if 
"Show advanced values" is checked in the GUI.

-Brad