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Dir : ~/proc/1856814/root/usr/share/cmake/Help/policy/

View File Name : CMP0127.rst

CMP0127
-------

.. versionadded:: 3.22

:command:`cmake_dependent_option` supports full :ref:`Condition Syntax`.

The ``<depends>`` parameter accepts a :ref:`semicolon-separated list <CMake
Language Lists>` of conditions.  CMake 3.21 and lower evaluates each
``condition`` as ``if(${condition})``, which does not properly handle
conditions with nested paren groups.  CMake 3.22 and above instead prefer
to evaluate each ``condition`` as ``if(<condition>)``, where ``<condition>``
is re-parsed as if literally written in a call to :command:`if`.  This
allows expressions like::

  "A AND (B OR C)"

but requires expressions like::

  "FOO MATCHES (UPPER|lower)"

to be re-written as::

  "FOO MATCHES \"(UPPER|lower)\""

Policy ``CMP0127`` provides compatibility for projects that have not
been updated to expect the new behavior.

This policy was introduced in CMake version 3.22.  CMake version
|release| warns when the policy is not set and uses ``OLD`` behavior.
Use the :command:`cmake_policy` command to set it to ``OLD`` or ``NEW``
explicitly.

.. include:: DEPRECATED.txt