TYPE

Widget type for entry in GUIs.

Cache entry values are always strings, but CMake GUIs present widgets to help users set values. The GUIs use this property as a hint to determine the widget type. Valid TYPE values are:

`BOOL`	Boolean ON/OFF value.
`PATH`	Path to a directory.
`FILEPATH`	Path to a file.
`STRING`	Generic string value.
`INTERNAL`	Do not present in GUI at all.
`STATIC`	Value managed by CMake, do not change.
`UNINITIALIZED`	Type not yet specified.

Generally the TYPE of a cache entry should be set by the command which creates it (set(), option(), find_library(), etc.).

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https://cmake.org/cmake/help/latest/prop_cache/TYPE.html