gh-115119: Recommend upstream libmpdec in build requirements (#136205)

skirpichev · StanFromIreland · vstinner · web-flow · commit b2e498ac26ba · 2025-07-03T14:44:59.000+02:00
Co-authored-by: Stan Ulbrych &lt;89152624+StanFromIreland@users.noreply.github.com&gt;
Co-authored-by: Victor Stinner &lt;vstinner@python.org&gt;
diff --git a/Doc/using/configure.rst b/Doc/using/configure.rst
@@ -29,6 +29,9 @@ Features and minimum versions required to build CPython:
 
 * Tcl/Tk 8.5.12 for the :mod:`tkinter` module.
 
+* `libmpdec <https://www.bytereef.org/mpdecimal/doc/libmpdec/>`_ 2.5.0
+  for the :mod:`decimal` module.
+
 * Autoconf 2.72 and aclocal 1.16.5 are required to regenerate the
   :file:`configure` script.
 
