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Help: Explain conversion rules of $<BOOL:string>.

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This resolves #18549.
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Joachim Wuttke (h)
2018-11-04 23:00:12 +01:00
committed by Joachim Wuttke (o)
parent 2b2b41f038
commit e0f0f80f02
1 changed files with 10 additions and 2 deletions
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Help/manual/cmake-generator-expressions.7.rst
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@@ -44,8 +44,16 @@ Available boolean expressions are:
Logical Operators Logical Operators
----------------- -----------------
``$<BOOL:condition>`` ``$<BOOL:string>``
``1`` if the ``condition`` is true, else ``0`` Converts ``string`` to ``0`` or ``1`` according to the rules of the
:command:`if()` command. Evaluates to ``0`` if any of the following is true:
* ``string`` is empty,
* ``string`` is a case-insensitive equal of
``0``, ``FALSE``, ``OFF``, ``N``, ``NO``, ``IGNORE``, or ``NOTFOUND``, or
* ``string`` ends in the suffix ``-NOTFOUND`` (case-sensitive).
Otherwise evaluates to ``1``.
``$<AND:conditions>`` ``$<AND:conditions>``
where ``conditions`` is a comma-separated list of boolean expressions. where ``conditions`` is a comma-separated list of boolean expressions.