CMake/Help/variable/PackageName_ROOT.rst

<PackageName>_ROOT
------------------

.. versionadded:: 3.12

Calls to :command:`find_package(<PackageName>)` will search in prefixes
specified by the ``<PackageName>_ROOT`` CMake variable, where
``<PackageName>`` is the name given to the :command:`find_package` call
and ``_ROOT`` is literal.  For example, ``find_package(Foo)`` will search
prefixes specified in the ``Foo_ROOT`` CMake variable (if set).
See policy :policy:`CMP0074`.

This variable may hold a single prefix or a
:ref:`semicolon-separated list <CMake Language Lists>` of multiple prefixes.

See also the :envvar:`<PackageName>_ROOT` environment variable.