New subject: [Bug 2247028] fonttools fails to build with Python 3.13: error: implicit declaration of function ‘_PyLong_Copy’

30 Oct 2023

      https://bugzilla.redhat.com/show_bug.cgi?id=2247028
Bug ID: 2247028
           Summary: fonttools fails to build with Python 3.13: error:
                    implicit declaration of function ‘_PyLong_Copy’
           Product: Fedora
           Version: rawhide
            Status: NEW
         Component: fonttools
          Assignee: pnemade@redhat.com
          Reporter: ksurma@redhat.com
        QA Contact: extras-qa@fedoraproject.org
                CC: fonts-bugs@lists.fedoraproject.org, ksurma@redhat.com,
                    mhroncok@redhat.com, pnemade@redhat.com,
                    tagoh@redhat.com
            Blocks: 2244836 (PYTHON3.13)
  Target Milestone: ---
    Classification: Fedora
fonttools fails to build with Python 3.13.0a1.
This report is automated and not very verbose, but we'll try to get back here
with details.
Lib/fontTools/qu2cu/qu2cu.c: In function ‘__Pyx_PyLong_AbsNeg’:
Lib/fontTools/qu2cu/qu2cu.c:10421:26: error: implicit declaration of function
‘_PyLong_Copy’ [-Werror=implicit-function-declaration]
10421 |         PyObject *copy = _PyLong_Copy((PyLongObject*)n);
      |                          ^~~~~~~~~~~~
https://docs.python.org/3.13/whatsnew/3.13.html
For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.13/fedora-ra...
For all our attempts to build fonttools with Python 3.13, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.13/package/fonttool...
Testing and mass rebuild of packages is happening in copr.
You can follow these instructions to test locally in mock if your package
builds with Python 3.13:
https://copr.fedorainfracloud.org/coprs/g/python/python3.13/
Let us know here if you have any questions.
Python 3.13 is planned to be included in Fedora 41.
To make that update smoother, we're building Fedora packages with all
pre-releases of Python 3.13.
A build failure prevents us from testing all dependent packages (transitive
[Build]Requires),
so if this package is required a lot, it's important for us to get it fixed
soon.
We'd appreciate help from the people who know this package best,
but if you don't want to work on this now, let us know so we can try to work
around it on our side.
Referenced Bugs:
https://bugzilla.redhat.com/show_bug.cgi?id=2244836
[Bug 2244836] Python 3.13
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[Bug 2247028] New: fonttools fails to build with Python 3.13: error: implicit declaration of function ‘_PyLong_Copy’