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bpo-21536: On Cygwin, C extensions must be linked with libpython (GH-… · python/cpython@c994c8f

@@ -138,7 +138,8 @@ environment variable, can be set using the new ``./configure --with-trace-refs``

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build option.

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(Contributed by Victor Stinner in :issue:`36465`.)

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On Unix, C extensions are no longer linked to libpython except on Android.

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On Unix, C extensions are no longer linked to libpython except on Android

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and Cygwin.

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It is now possible

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for a statically linked Python to load a C extension built using a shared

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library Python.

@@ -163,8 +164,8 @@ previous command fails (replace ``X.Y`` with the Python version).

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On the other hand, ``pkg-config python3.8 --libs`` no longer contains

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``-lpython3.8``. C extensions must not be linked to libpython (except on

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Android, case handled by the script); this change is backward incompatible on

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purpose.

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Android and Cygwin, whose cases are handled by the script);

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this change is backward incompatible on purpose.

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(Contributed by Victor Stinner in :issue:`36721`.)

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f-strings now support = for quick and easy debugging

@@ -1061,12 +1062,12 @@ Changes in the C API

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instead.

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(Contributed by Victor Stinner in :issue:`36728`.)

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* On Unix, C extensions are no longer linked to libpython except on

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Android. When Python is embedded, ``libpython`` must not be loaded with

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* On Unix, C extensions are no longer linked to libpython except on Android

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and Cygwin. When Python is embedded, ``libpython`` must not be loaded with

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``RTLD_LOCAL``, but ``RTLD_GLOBAL`` instead. Previously, using

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``RTLD_LOCAL``, it was already not possible to load C extensions which were

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not linked to ``libpython``, like C extensions of the standard library built

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by the ``*shared*`` section of ``Modules/Setup``.

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``RTLD_LOCAL``, it was already not possible to load C extensions which

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were not linked to ``libpython``, like C extensions of the standard

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library built by the ``*shared*`` section of ``Modules/Setup``.

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* Use of ``#`` variants of formats in parsing or building value (e.g.

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:c:func:`PyArg_ParseTuple`, :c:func:`Py_BuildValue`, :c:func:`PyObject_CallFunction`,