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FindPythonInterp: Document lack of version filtering for plain python

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Also drop the `CMakeOnly.MajorVersionSelection-PythonInterp_2` test
because some environments now have a plain `python` executable for
Python 3.

Fixes: #19536
This commit is contained in:
Brad King 2019-07-30 12:07:37 -04:00
parent 0e2e3e0f9f
commit 800c3ab2e0
2 changed files with 10 additions and 1 deletions
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9
Modules/FindPythonInterp.cmake
View File

@ -39,6 +39,15 @@ If calling both ``find_package(PythonInterp)`` and
``find_package(PythonLibs)``, call ``find_package(PythonInterp)`` first to
get the currently active Python version by default with a consistent version
of PYTHON_LIBRARIES.
.. note::
A call to ``find_package(PythonInterp ${V})`` for python version ``V``
may find a ``python`` executable with no version suffix. In this case
no attempt is made to avoid python executables from other versions.
Use :module:`FindPython3`, :module:`FindPython2` or :module:`FindPython`
instead.
#]=======================================================================]
unset(_Python_NAMES)

2
Tests/CMakeOnly/CMakeLists.txt
View File

@ -84,5 +84,5 @@ function(add_major_test module)
endfunction()
add_major_test(PythonLibs VERSIONS 2 3 VERSION_VAR PYTHONLIBS_VERSION_STRING)
add_major_test(PythonInterp NOLANG VERSIONS 2 3 VERSION_VAR PYTHON_VERSION_STRING)
add_major_test(PythonInterp NOLANG VERSIONS 3 VERSION_VAR PYTHON_VERSION_STRING)
add_major_test(Qt VERSIONS 3 4 VERSION_VAR QT_VERSION_STRING)