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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | option
------
Provides an option that the user can optionally select.
::
option(<option_variable> "help string describing option"
[initial value])
Provide an option for the user to select as ``ON`` or ``OFF``. If no
initial value is provided, ``OFF`` is used.
If you have options that depend on the values of other options, see
the module help for :module:`CMakeDependentOption`.
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