Update configure.rst

Author: StanFromIreland

Doc/using/configure.rst

@@ -311,6 +311,13 @@ General Options
 
    By convention, ``--enable-experimental-jit`` is a shorthand for ``--enable-experimental-jit=yes``.
 
+   .. note::
+
+      When building CPython with JIT enabled, ensure that your system has Python 3.11 or later installed.
+
+      Additionally, note that the JIT compiler is incompatible with the ``--disable-gil`` option.
+      If ``--disable-gil`` is enabled, the JIT will be disabled at runtime, even if it was compiled in.
+
    .. versionadded:: 3.13
 
 .. option:: PKG_CONFIG