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Document PGO in devguide #1153

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Aug 13, 2023
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Document PGO in devguide #1153

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8 changes: 8 additions & 0 deletions getting-started/setup-building.rst
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Expand Up @@ -237,6 +237,14 @@ build the :py:mod:`ctypes` module (without the flag the rest of CPython will
still build properly).


Optimization
''''''''''''

To get an optimized build of Python, ``configure --enable-optimizations --with-lto``. This sets the default make targets up to enable Profile Guided Optimization (PGO) and may be used to auto-enable Link Time Optimization (LTO) on some platforms. Note that configuration including this option takes time to configure. If you want to learn more about these options, please see `Configure > Performance options <https://docs.python.org/3/using/configure.html?highlight=lto#performance-options>`_ ::
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$ ./configure --enable-optimizations --with-lto


.. _windows-compiling:

Windows
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