https://github.com/Kitware/CMake
Tip revision: 0b0df2d0638c1505463039bab0669eeb550b0471 authored by Brad King on 13 October 2020, 16:40:27 UTC
CMake 3.19.0-rc1
CMake 3.19.0-rc1
Tip revision: 0b0df2d
variable_requires.rst
variable_requires
-----------------
Disallowed since version 3.0. See CMake Policy :policy:`CMP0035`.
Use the :command:`if` command instead.
Assert satisfaction of an option's required variables.
::
variable_requires(TEST_VARIABLE RESULT_VARIABLE
REQUIRED_VARIABLE1
REQUIRED_VARIABLE2 ...)
The first argument (``TEST_VARIABLE``) is the name of the variable to be
tested, if that variable is false nothing else is done. If
``TEST_VARIABLE`` is true, then the next argument (``RESULT_VARIABLE``)
is a variable that is set to true if all the required variables are set.
The rest of the arguments are variables that must be true or not set
to ``NOTFOUND`` to avoid an error. If any are not true, an error is
reported.