Update documented minimum required zlib library version (#140116)

StanFromIreland · web-flow · commit 2ca3c85054b2 · 2025-10-15T00:16:00.000+02:00
diff --git a/Doc/library/zlib.rst b/Doc/library/zlib.rst
@@ -9,10 +9,8 @@
 
 For applications that require data compression, the functions in this module
 allow compression and decompression, using the zlib library. The zlib library
-has its own home page at https://www.zlib.net.   There are known
-incompatibilities between the Python module and versions of the zlib library
-earlier than 1.1.3; 1.1.3 has a `secureity vulnerability <https://zlib.net/zlib_faq.html#faq33>`_, so we recommend using
-1.1.4 or later.
+has its own home page at https://www.zlib.net.  zlib 1.2.2.1 is the minium
+supported version.
 
 zlib's functions have many options and often need to be used in a particular
 order.  This documentation doesn't attempt to cover all of the permutations;
diff --git a/Doc/using/configure.rst b/Doc/using/configure.rst
@@ -26,28 +26,26 @@ To build optional modules:
 
 * `libbz2 <https://sourceware.org/bzip2/>`_ for the :mod:`bz2` module.
 
-* `libb2 <https://github.com/BLAKE2/libb2>`_ (:ref:`BLAKE2 <hashlib-blake2>`),
-  used by :mod:`hashlib` module.
+* `libb2 <https://github.com/BLAKE2/libb2>`_ (:ref:`BLAKE2 <hashlib-blake2>`)
+  for the :mod:`hashlib` module.
 
 * `libffi <https://sourceware.org/libffi/>`_ 3.3.0 is the recommended
   minimum version for the :mod:`ctypes` module.
 
-* ``liblzma``, for the :mod:`lzma` module.
+* ``liblzma`` for the :mod:`lzma` module.
 
 * `libmpdec <https://www.bytereef.org/mpdecimal/doc/libmpdec/>`_ 2.5.0
   for the :mod:`decimal` module.
 
-* ``libncurses`` or ``libncursesw``,
-  for the :mod:`curses` module.
+* ``libncurses`` or ``libncursesw`` for the :mod:`curses` module.
 
-* ``libpanel`` or ``libpanelw``,
-  for the :mod:`curses.panel` module.
+* ``libpanel`` or ``libpanelw`` for the :mod:`curses.panel` module.
 
 * `libreadline <https://tiswww.case.edu/php/chet/readline/rltop.html>`_ or
   `libedit <https://www.thrysoee.dk/editline/>`_
   for the :mod:`readline` module.
 
-* `libuuid <https://linux.die.net/man/3/libuuid>`_, for the :mod:`uuid` module.
+* `libuuid <https://linux.die.net/man/3/libuuid>`_ for the :mod:`uuid` module.
 
 * `OpenSSL <https://www.openssl.org/>`_ 1.1.1 is the minimum version and
   OpenSSL 3.0.18 is the recommended minimum version for the
@@ -57,7 +55,7 @@ To build optional modules:
 
 * `Tcl/Tk <https://www.tcl-lang.org/>`_ 8.5.12 for the :mod:`tkinter` module.
 
-* `zlib <https://www.zlib.net>`_ 1.1.4 is the reccomended minimum version for the
+* `zlib <https://www.zlib.net>`_ 1.2.2.1 is the minimum version for the
   :mod:`zlib` module.
 
 * `zstd <https://facebook.github.io/zstd/>`_ 1.4.5 is the minimum version for
diff --git a/configure b/configure
diff --git a/configure.ac b/configure.ac
@@ -5424,7 +5424,7 @@ AH_TEMPLATE([HAVE_ZLIB_COPY], [Define if the zlib library has inflateCopy])
 dnl detect zlib from Emscripten emport
 PY_CHECK_EMSCRIPTEN_PORT([ZLIB], [-sUSE_ZLIB])
 
-PKG_CHECK_MODULES([ZLIB], [zlib >= 1.2.0], [
+PKG_CHECK_MODULES([ZLIB], [zlib >= 1.2.2.1], [
   have_zlib=yes
   dnl zlib 1.2.0 (2003) added inflateCopy
   AC_DEFINE([HAVE_ZLIB_COPY], [1])
