https://github.com/Kitware/CMake
Tip revision: 5e98111643e22ad515afa2bf48a92573b6987115 authored by Brad King on 12 April 2019, 12:02:19 UTC
CMake 3.14.2
CMake 3.14.2
Tip revision: 5e98111
CMP0074.rst
CMP0074
-------
:command:`find_package` uses ``<PackageName>_ROOT`` variables.
In CMake 3.12 and above the :command:`find_package(<PackageName>)` command now
searches prefixes specified by the :variable:`<PackageName>_ROOT` CMake
variable and the :envvar:`<PackageName>_ROOT` environment variable.
Package roots are maintained as a stack so nested calls to all ``find_*``
commands inside find modules also search the roots as prefixes. This policy
provides compatibility with projects that have not been updated to avoid using
``<PackageName>_ROOT`` variables for other purposes.
The ``OLD`` behavior for this policy is to ignore ``<PackageName>_ROOT``
variables. The ``NEW`` behavior for this policy is to use
``<PackageName>_ROOT`` variables.
This policy was introduced in CMake version 3.12. 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