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GH-109975: Copyedit 3.13 What's New: Build Changes by AA-Turner · Pull Request #124343 · python/cpython · GitHub

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GH-109975: Copyedit 3.13 What's New: Build Changes #124343

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Yhg1s merged 2 commits into from
Sep 23, 2024
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GH-109975: Copyedit 3.13 What's New: Build Changes #124343

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Copyedit Build Changes
AA-Turner Sep 23, 2024
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Use the right PEP number
AA-Turner Sep 23, 2024
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57 changes: 33 additions & 24 deletions Doc/whatsnew/3.13.rst
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Expand Up @@ -2504,24 +2504,48 @@ Deprecated C APIs
Build Changes
=============

* The :file:`configure` option :option:`--with-system-libmpdec` now defaults
to ``yes``. The bundled copy of ``libmpdecimal`` will be removed in Python
3.15.
* ``arm64-apple-ios`` and ``arm64-apple-ios-simulator`` are both
now :pep:`11` tier 3 platforms.
(:ref:`PEP 730 <whatsnew313-platform-support>` written
and implementation contributed by Russell Keith-Magee in :gh:`114099`.)

* ``wasm32-wasi`` is now a :pep:`11` tier 2 platform.
(Contributed by Brett Cannon in :gh:`115192`.)

* ``wasm32-emscripten`` is no longer a :pep:`11` supported platform.
(Contributed by Brett Cannon in :gh:`115192`.)

* Building CPython now requires a compiler with support for the C11 atomic
library, GCC built-in atomic functions, or MSVC interlocked intrinsics.

* Autoconf 2.71 and aclocal 1.16.4 are now required to regenerate
the :file:`configure` script.
(Contributed by Christian Heimes in :gh:`89886`.)

* SQLite 3.15.2 or newer is required to build the :mod:`sqlite3` extension module.
* SQLite 3.15.2 or newer is required to build
the :mod:`sqlite3` extension module.
(Contributed by Erlend Aasland in :gh:`105875`.)

* Python built with :file:`configure` :option:`--with-trace-refs` (tracing
references) is now ABI compatible with the Python release build and
:ref:`debug build <debug-build>`.
* CPython now bundles the `mimalloc library`_ by default.
It is licensed under the MIT license;
see :ref:`mimalloc license <mimalloc-license>`.
The bundled mimalloc has custom changes, see :gh:`113141` for details.
(Contributed by Dino Viehland in :gh:`109914`.)

.. _mimalloc library: https://github.com/microsoft/mimalloc/

* The :file:`configure` option :option:`--with-system-libmpdec`
now defaults to ``yes``.
The bundled copy of ``libmpdecimal`` will be removed in Python 3.15.

* Python built with :file:`configure` :option:`--with-trace-refs`
(tracing references) is now ABI compatible with the Python release build
and :ref:`debug build <debug-build>`.
(Contributed by Victor Stinner in :gh:`108634`.)

* Building CPython now requires a compiler with support for the C11 atomic
library, GCC built-in atomic functions, or MSVC interlocked intrinsics.
* On POSIX systems, the pkg-config (``.pc``) filenames now include the ABI
flags. For example, the free-threaded build generates ``python-3.13t.pc``
and the debug build generates ``python-3.13d.pc``.

* The ``errno``, ``fcntl``, ``grp``, ``md5``, ``pwd``, ``resource``,
``termios``, ``winsound``,
Expand All @@ -2530,21 +2554,6 @@ Build Changes
C extensions are now built with the :ref:`limited C API <limited-c-api>`.
(Contributed by Victor Stinner in :gh:`85283`.)

* ``wasm32-wasi`` is now a :pep:`11` tier 2 platform.
(Contributed by Brett Cannon in :gh:`115192`.)

* ``wasm32-emscripten`` is no longer a :pep:`11` supported platform.
(Contributed by Brett Cannon in :gh:`115192`.)

* Python now bundles the `mimalloc library <https://github.com/microsoft/mimalloc>`__.
It is licensed under the MIT license; see :ref:`mimalloc license <mimalloc-license>`.
The bundled mimalloc has custom changes, see :gh:`113141` for details.
(Contributed by Dino Viehland in :gh:`109914`.)

* On POSIX systems, the pkg-config (``.pc``) filenames now include the ABI
flags. For example, the free-threaded build generates ``python-3.13t.pc``
and the debug build generates ``python-3.13d.pc``.


Porting to Python 3.13
======================
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