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To embed Python into an application, a new ``--embed`` option must be passed to
``python3-config --libs --embed`` to get ``-lpython3.8`` (link the application
to libpython). To support both 3.8 and older, try ``python3-config --libs
--embed`` first and fallback to ``python3-config --libs`` (without ``--embed``)
if the previous command fails.
Add a pkg-config ``python-3.8-embed`` module to embed Python into an
application: ``pkg-config python-3.8-embed --libs`` includes ``-lpython3.8``.
To support both 3.8 and older, try ``pkg-config python-X.Y-embed --libs`` first
and fallback to ``pkg-config python-X.Y --libs`` (without ``--embed``) if the
previous command fails (replace ``X.Y`` with the Python version).
On the other hand, ``pkg-config python3.8 --libs`` no longer contains
``-lpython3.8``. C extensions must not be linked to libpython (except on
Android, case handled by the script); this change is backward incompatible on
purpose.
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