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Help/command/include/UNSET_NOTE.rst
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Alex Turbov
Help: Use `*.rst` extension for included files
14 апр 2025, 02:07
Не верифицирован
14 апр 2025, 02:07
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.. note:: When evaluating :ref:`Variable References` of the form ``${VAR}``, CMake first searches for a normal variable with that name. If no such normal variable exists, CMake will then search for a cache entry with that name. Because of this, **unsetting a normal variable can expose a cache variable that was previously hidden**. To force a variable reference of the form ``${VAR}`` to return an empty string, use ``set(<variable> "")``, which clears the normal variable but leaves it defined.