FindPython{Interp,Libs}: Add policy to remove these modules

The `FindPythonInterp` and `FindPythonLibs` modules have been deprecated
since CMake 3.12.  Add a policy to pretend they do not exist in order to
encourage projects to port to `FindPython` or `FindPython{2,3}`.

1 files changed, 29 insertions, 0 deletions

diff --git a/Help/policy/CMP0148.rst b/Help/policy/CMP0148.rst
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+CMP0148
+-------
+
+.. versionadded:: 3.27
+
+The :module:`FindPythonInterp` and :module:`FindPythonLibs` modules are removed.
+
+These modules have been deprecated since CMake 3.12.
+CMake 3.27 and above prefer to not provide the modules.
+This policy provides compatibility for projects that have not been
+ported away from them.
+
+Projects using the :module:`FindPythonInterp` and/or :module:`FindPythonLibs`
+modules should be updated to use one of their replacements:
+
+* :module:`FindPython3`
+* :module:`FindPython2`
+* :module:`FindPython`
+
+The ``OLD`` behavior of this policy is for ``find_package(PythonInterp)``
+and ``find_package(PythonLibs)`` to load the deprecated modules.  The ``NEW``
+behavior is for uses of the modules to fail as if they do not exist.
+
+This policy was introduced in CMake version 3.27.  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