Bug 1898932 - qgis fails to build with Python 3.10: CMake cannot find Python
Summary: qgis fails to build with Python 3.10: CMake cannot find Python
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: qgis
Version: rawhide
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Volker Fröhlich
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: PYTHON3.10
TreeView+ depends on / blocked
 
Reported: 2020-11-18 10:52 UTC by Miro Hrončok
Modified: 2021-02-09 16:23 UTC (History)
6 users (show)

Fixed In Version:
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Type: Bug


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Description Miro Hrončok 2020-11-18 10:52:47 UTC
qgis fails to build with Python 3.10.0a2.

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
PYTHON_LIBRARY
    linked by target "qgispython" in directory /builddir/build/BUILD/qgis-3.16.0/src/python
    linked by target "python_module_qgis__server" in directory /builddir/build/BUILD/qgis-3.16.0/python
    linked by target "python_module_qgis__gui" in directory /builddir/build/BUILD/qgis-3.16.0/python
    linked by target "python_module_qgis__core" in directory /builddir/build/BUILD/qgis-3.16.0/python
    linked by target "python_module_qgis__3d" in directory /builddir/build/BUILD/qgis-3.16.0/python
    linked by target "python_module_qgis__analysis" in directory /builddir/build/BUILD/qgis-3.16.0/python

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.10/fedora-rawhide-x86_64/01766919-qgis/

For all our attempts to build qgis with Python 3.10, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.10/package/qgis/

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 3.10:
https://copr.fedorainfracloud.org/coprs/g/python/python3.10/

Let us know here if you have any questions.

Python 3.10 will be included in Fedora 35. To make that update smoother, we're building Fedora packages with early pre-releases of Python 3.10.
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.

Comment 1 Ben Cotton 2021-02-09 15:25:40 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 34 development cycle.
Changing version to 34.


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