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CMakeDependentOption: Document that 4th parameter follows if-syntax

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This commit is contained in:
Hong Xu
2019-08-02 13:30:39 -07:00
committed by Brad King
parent 7bacf0233b
commit d192caefff
2 changed files with 5 additions and 2 deletions
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2
Help/command/if.rst
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@@ -29,6 +29,8 @@ If used, it must be a verbatim
repeat of the argument of the opening
``if`` command.
.. _`Condition Syntax`:
Condition Syntax
^^^^^^^^^^^^^^^^

5
Modules/CMakeDependentOption.cmake
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@@ -12,7 +12,7 @@ conditions are true. When the option is not presented a default value
is used, but any value set by the user is preserved for when the
option is presented again. Example invocation:
::
.. code-block:: cmake
CMAKE_DEPENDENT_OPTION(USE_FOO "Use Foo" ON
"USE_BAR;NOT USE_ZOT" OFF)
@@ -21,7 +21,8 @@ If USE_BAR is true and USE_ZOT is false, this provides an option
called USE_FOO that defaults to ON. Otherwise, it sets USE_FOO to
OFF. If the status of USE_BAR or USE_ZOT ever changes, any value for
the USE_FOO option is saved so that when the option is re-enabled it
retains its old value.
retains its old value. Each element in the fourth parameter is
evaluated as an if-condition, so :ref:`Condition Syntax` can be used.
#]=======================================================================]
macro(CMAKE_DEPENDENT_OPTION option doc default depends force)