bpo-36707: Document "m" removal from sys.abiflags (GH-14090)

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Victor Stinner 2019-06-15 03:24:41 +02:00 committed by GitHub
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@ -16,6 +16,10 @@ always available.
On POSIX systems where Python was built with the standard ``configure``
script, this contains the ABI flags as specified by :pep:`3149`.
.. versionchanged:: 3.8
Default flags became an empty string (``m`` flag for pymalloc has been
removed).
.. versionadded:: 3.2

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@ -955,6 +955,22 @@ Optimizations
Build and C API Changes
=======================
* Default :data:`sys.abiflags` became an empty string: the ``m`` flag for
pymalloc became useless (builds with and without pymalloc are ABI compatible)
and so has been removed. (Contributed by Victor Stinner in :issue:`36707`.)
Example of changes:
* Only ``python3.8`` program is installed, ``python3.8m`` program is gone.
* Only ``python3.8-config`` script is installed, ``python3.8m-config`` script
is gone.
* The ``m`` flag has been removed from the suffix of dynamic library
filenames: extension modules in the standard library as well as those
produced and installed by third-party packages, like those downloaded from
PyPI. On Linux, for example, the Python 3.7 suffix
``.cpython-37m-x86_64-linux-gnu.so`` became
``.cpython-38-x86_64-linux-gnu.so`` in Python 3.8.
* The header files have been reorganized to better separate the different kinds
of APIs: