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6 changes: 3 additions & 3 deletions getting-started/setup-building.rst
Original file line number Diff line number Diff line change
Expand Up @@ -860,15 +860,15 @@ some of CPython's modules (for example, ``zlib``).

$ xcode-select --install

This will also ensure that the system header files are installed into
``/usr/include``.
This also installs the macOS SDK, which contains the system header files
(``xcrun --show-sdk-path`` prints its location).

.. _Homebrew: https://brew.sh

.. _MacPorts: https://www.macports.org

Also note that macOS does not include several libraries used by the Python
standard library, including ``libzma``, so expect to see some extension module
standard library, including ``liblzma``, so expect to see some extension module
build failures unless you install local copies of them. As of OS X 10.11,
Apple no longer provides header files for the deprecated system version of
OpenSSL which means that you will not be able to build the ``_ssl`` extension.
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