[issue12081] Remove distributed copy of libffi

[STINNER Victor]

New submission from Benjamin Peterson <[hidden email]>:

I believe the bugs which the patched version of libffi used have been fixed in recent versions. We should stop distributing an old version.

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components: ctypes
messages: 136034
nosy: benjamin.peterson
priority: normal
severity: normal
status: open
title: Remove distributed copy of libffi
versions: Python 3.3

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[STINNER Victor]

Changes by Nadeem Vawda <[hidden email]>:


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nosy: +nadeem.vawda

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[STINNER Victor]

Changes by Ross Lagerwall <[hidden email]>:


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nosy: +rosslagerwall

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[STINNER Victor]

Georg Brandl <[hidden email]> added the comment:

Sounds reasonable.  How will this work on Windows?

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nosy: +georg.brandl

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[STINNER Victor]

Changes by Arfrever Frehtes Taifersar Arahesis <[hidden email]>:


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nosy: +Arfrever

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[STINNER Victor]

Roumen Petrov <[hidden email]> added the comment:

On windows work with patched version of library . Unpatched does not work but I cannot remember python issue number.

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nosy: +rpetrov

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[STINNER Victor]

Arfrever Frehtes Taifersar Arahesis <[hidden email]> added the comment:

Has the patch been sent to libffi upstream? What was the response from libffi upstream?

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Changes by Jesús Cea Avión <[hidden email]>:


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nosy: +jcea

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[STINNER Victor]

Matthias Klose <[hidden email]> added the comment:

iirc after merging 3.0.9, we still had to use the internal libffi bits for windows and macosx. I didn't check 3.0.10rc8

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nosy: +doko

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[STINNER Victor]

Ross Lagerwall <[hidden email]> added the comment:

In any case, it should be OK to remove libffi_arm_wince?

Is WinCE supported?

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Changes by Antoine Pitrou <[hidden email]>:


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nosy: +meador.inge

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[STINNER Victor]

Antoine Pitrou <[hidden email]> added the comment:

I don't think we have ever "supported" WinCE (which is apparently named "Windows Embedded Compact 7" nowadays). It only provides a subset of the Win32 API so the current tree may not even compile.

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nosy: +brian.curtin, loewis, pitrou

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[STINNER Victor]

Martin v. Löwis <[hidden email]> added the comment:

Arfrever: I doubt anybody has contributed patches back, or that anybody is interested in doing so.

I personally don't see a problem in using an old libffi version, so I fail to see Benjamin's issue. Figuring out how exactly to use the system libffi is more hassle than keeping our own copy.

Please understand that ctypes is unmaintained. Anybody actively taking over maintenance of ctypes would have to decide on how integration with libffi is supposed to work. Without a maintainer, falling back to the sytem libffi is a too high risk, IMO, since this will certainly produce tons of new bug reports, with nobody prepared to deal with them.

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[STINNER Victor]

Matthias Klose <[hidden email]> added the comment:

The last time I merged libffi, we were not able to build the MacOS X and Windows libffi from the upstream sources, but used the internal copy of the copy. Now that libffi 3.0.11 is released, we could

 - update to this new version, see if the MacOS X and Windows
   builds work (there are upstream related changes)

 - start defaulting to the system libffi for at least some targets
   (e.g. linux), for which we know that almost nobody will use the
   internal copy

No, I don't volunteer to maintain ctypes itself.

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Changes by Éric Araujo <[hidden email]>:


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nosy: +amaury.forgeotdarc, belopolsky, eric.araujo

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