doc: replace deprecated distutils version parsing

[ upstream commit 2654ce5 ]

When using Python 3.10, this warning appears:
  DeprecationWarning: The distutils package is deprecated
  and slated for removal in Python 3.12.
  Use setuptools or check PEP 632 for potential alternatives

The PEP 632 recommends replacing "distutils.version" with "packaging".

Bugzilla ID: 914

Reported-by: Jerin Jacob <jerinj@marvell.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Tested-by: Jerin Jacob <jerinj@marvell.com>

buildtools/call-sphinx-build.py

@@ -7,7 +7,7 @@
 import os
 from os.path import join
 from subprocess import run, PIPE, STDOUT
-from distutils.version import StrictVersion
+from packaging.version import Version
 
 # assign parameters to variables
 (sphinx, version, src, dst, *extra_args) = sys.argv[1:]
@@ -19,7 +19,7 @@
 ver = run([sphinx, '--version'], stdout=PIPE,
           stderr=STDOUT).stdout.decode().split()[-1]
 sphinx_cmd = [sphinx] + extra_args
-if StrictVersion(ver) >= StrictVersion('1.7'):
+if Version(ver) >= Version('1.7'):
     sphinx_cmd += ['-j', 'auto']
 
 # find all the files sphinx will process so we can write them as dependencies

doc/guides/conf.py

@@ -3,7 +3,7 @@
 # Copyright(c) 2010-2015 Intel Corporation
 
 from docutils import nodes
-from distutils.version import LooseVersion
+from packaging.version import Version
 from sphinx import __version__ as sphinx_version
 from os import listdir
 from os import environ
@@ -28,7 +28,7 @@
 
 project = 'Data Plane Development Kit'
 html_logo = '../logo/DPDK_logo_vertical_rev_small.png'
-if LooseVersion(sphinx_version) >= LooseVersion('3.5'):
+if Version(sphinx_version) >= Version('3.5'):
     html_permalinks = False
 else:
     html_add_permalinks = ""
@@ -385,7 +385,7 @@ def setup(app):
                             'Features availability in bbdev drivers',
                             'Feature')
 
-    if LooseVersion(sphinx_version) < LooseVersion('1.3.1'):
+    if Version(sphinx_version) < Version('1.3.1'):
         print('Upgrade sphinx to version >= 1.3.1 for '
               'improved Figure/Table number handling.',
               file=stderr)