[Python-checkins] bpo-36707: Document "m" removal from sys.abiflags (GH-14090)
Victor Stinner
webhook-mailer at python.org
Fri Jun 14 21:24:45 EDT 2019
https://github.com/python/cpython/commit/7efc526e5cfb929a79c192ac2dcf7eb78d3a4401
commit: 7efc526e5cfb929a79c192ac2dcf7eb78d3a4401
branch: master
author: Victor Stinner <vstinner at redhat.com>
committer: GitHub <noreply at github.com>
date: 2019-06-15T03:24:41+02:00
summary:
bpo-36707: Document "m" removal from sys.abiflags (GH-14090)
files:
M Doc/library/sys.rst
M Doc/whatsnew/3.8.rst
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index 817c3f1e56f9..c073431c8948 100644
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -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
diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst
index b63bcef5de47..cc3fb76e9c55 100644
--- a/Doc/whatsnew/3.8.rst
+++ b/Doc/whatsnew/3.8.rst
@@ -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:
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