diff --git a/getting-started/setup-building.rst b/getting-started/setup-building.rst
index 110d718e95..60c7cbb859 100644
--- a/getting-started/setup-building.rst
+++ b/getting-started/setup-building.rst
@@ -197,6 +197,16 @@ Configuration is typically::
 More flags are available to ``configure``, but this is the minimum you should
 do to get a pydebug build of CPython.
 
+.. tip::
+   To speed up repeated ``configure`` runs, use ``--config-cache`` (short:
+   ``-C``, equivalent: ``--cache-file=config.cache``)::
+
+      $ ./configure --config-cache --with-pydebug
+
+   This caches results in a ``config.cache`` file. If you switch compilers or
+   significantly change your build environment, delete ``config.cache`` before
+   re-running ``configure``.
+
 .. note::
    You might need to run ``make clean`` before or after re-running ``configure``
    in a particular build directory.
@@ -864,7 +874,8 @@ some of CPython's modules (for example, ``zlib``).
 
             $ GDBM_CFLAGS="-I$(brew --prefix gdbm)/include" \
                GDBM_LIBS="-L$(brew --prefix gdbm)/lib -lgdbm" \
-               ./configure --with-pydebug \
+               ./configure --config-cache \
+                           --with-pydebug \
                            --with-openssl="$(brew --prefix openssl@3)"
 
       .. tab:: Python 3.10
@@ -873,7 +884,8 @@ some of CPython's modules (for example, ``zlib``).
 
             $ CPPFLAGS="-I$(brew --prefix gdbm)/include -I$(brew --prefix xz)/include" \
                LDFLAGS="-L$(brew --prefix gdbm)/lib -L$(brew --prefix xz)/lib" \
-               ./configure --with-pydebug \
+               ./configure --config-cache \
+                           --with-pydebug \
                            --with-openssl="$(brew --prefix openssl@3)" \
                            --with-tcltk-libs="$(pkg-config --libs tcl tk)" \
                            --with-tcltk-includes="$(pkg-config --cflags tcl tk)" \
@@ -895,7 +907,8 @@ some of CPython's modules (for example, ``zlib``).
 
             $ GDBM_CFLAGS="-I$(dirname $(dirname $(which port)))/include" \
                GDBM_LIBS="-L$(dirname $(dirname $(which port)))/lib -lgdbm" \
-               ./configure --with-pydebug \
+               ./configure --config-cache \
+                           --with-pydebug \
                            --with-system-libmpdec
 
       .. tab:: Python 3.11-3.12
@@ -904,7 +917,8 @@ some of CPython's modules (for example, ``zlib``).
 
             $ GDBM_CFLAGS="-I$(dirname $(dirname $(which port)))/include" \
                GDBM_LIBS="-L$(dirname $(dirname $(which port)))/lib -lgdbm" \
-               ./configure --with-pydebug
+               ./configure --config-cache \
+                           --with-pydebug
 
    And finally, run ``make``::
 
diff --git a/index.rst b/index.rst
index 997f599327..75de6b405e 100644
--- a/index.rst
+++ b/index.rst
@@ -43,13 +43,13 @@ instructions please see the :ref:`setup guide <setup>`.
 
       .. code-block:: shell
 
-         ./configure --with-pydebug && make -j $(nproc)
+         ./configure --config-cache --with-pydebug && make -j $(nproc)
 
    .. tab:: macOS
 
       .. code-block:: shell
 
-         ./configure --with-pydebug && make -j8
+         ./configure --config-cache --with-pydebug && make -j8
 
    .. tab:: Windows