Skip to content

bpo-36707: Document "m" removed from sys.abiflags #14090

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
vstinner merged 3 commits into from
Jun 15, 2019
Merged

bpo-36707: Document "m" removed from sys.abiflags #14090

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
195fdf9
bpo-36707: Document "m" removed from sys.abiflags
vstinner Jun 14, 2019
988dd51
Address Ned's comment
vstinner Jun 14, 2019
014343b
Fix typo
vstinner Jun 15, 2019
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions Doc/library/sys.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -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


Expand Down
16 changes: 16 additions & 0 deletions Doc/whatsnew/3.8.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -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.

Copy link
Member

@ned-deily ned-deily Jun 14, 2019

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

It should also be noted that this affects extension modules in the standard library as well as those produced and installed by third-party packages, like those downloaded from PyPI.

Copy link
Member Author

@vstinner vstinner Jun 14, 2019

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I updated my PR. Does it look better now?

* The header files have been reorganized to better separate the different kinds
of APIs:

Expand Down