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Replace use of deprecated Python module distutils.sysconfig, take 2.

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With Python 3.10, configure spits out warnings about the module
distutils.sysconfig being deprecated and scheduled for removal in
Python 3.12.  Change the uses in configure to use the module sysconfig
instead.  The logic stays largely the same, although we have to
rely on INCLUDEPY instead of the deprecated get_python_inc function.

Note that sysconfig exists since Python 2.7, so this moves the minimum
required version up from Python 2.6.  Also, sysconfig didn't exist in
Python 3.1, so the minimum 3.x version is now 3.2.

We should consider back-patching this if it gives no further trouble,
as the no-longer-supported versions are old enough to probably not
be interesting to anyone.

Peter Eisentraut, Tom Lane, Andres Freund

Discussion: https://postgr.es/m/c74add3c-09c4-a9dd-1a03-a846e5b2fc52@enterprisedb.com
This commit is contained in:
Tom Lane
2022-01-25 18:52:44 -05:00
parent e221770661
commit bd233bdd8d
3 changed files with 31 additions and 45 deletions
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6
doc/src/sgml/installation.sgml
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@ -195,10 +195,10 @@ su - postgres
To build the <application>PL/Python</application> server programming
language, you need a <productname>Python</productname>
installation with the header files and
the <application>distutils</application> module. The minimum
required version is <productname>Python</productname> 2.6.
the <application>sysconfig</application> module. The minimum
required version is <productname>Python</productname> 2.7.
<productname>Python 3</productname> is supported if it's
version 3.1 or later; but see
version 3.2 or later; but see
<xref linkend="plpython-python23"/>
when using Python 3.
</para>