----- Original Message -----
> From: "Artur Iwicki" <s...@fedoraproject.org>
> To: devel@lists.fedoraproject.org
> Sent: Sunday, February 24, 2019 3:27:43 PM
> Subject: Problem with cmake's PythonInterp in F29 and F28
>
> I've got a package (colobot) which has a build-time dependency on Python3.
> The program had a new upstream release today, so I updated the spec file and
> fired up the builds.
>
> Everything went smooth on rawhide and F30, whereas the F29 and F28 builds
> failed with a rather amusing error message:
> >BUILDSTDERR: CMake Error at
> >/usr/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:137 (message):
> >BUILDSTDERR: Could NOT find PythonInterp: Found unsuitable version "1.4",
> >but required
> >BUILDSTDERR: is at least "2.7" (found
> >BUILDSTDERR:
> >/builddir/build/BUILD/colobot-colobot-gold-0.1.12-alpha/build/%{__python3})
> >BUILDSTDERR: Call Stack (most recent call first):
> >BUILDSTDERR:
> >/usr/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:376
> >(_FPHSA_FAILURE_MESSAGE)
> >BUILDSTDERR: /usr/share/cmake/Modules/FindPythonInterp.cmake:159
> >(FIND_PACKAGE_HANDLE_STANDARD_ARGS)
> >BUILDSTDERR: data/CMakeLists.txt:6 (find_package)
> >-- Configuring incomplete, errors occurred!
>
> So, uh, is this in issue with cmake, python3, the project's CMakeLists, or
> something totally different?
>
> For anyone interested in the koji builds:
> rawhide: http://koji.fedoraproject.org/koji/buildinfo?buildID=1215429
> fc30: http://koji.fedoraproject.org/koji/buildinfo?buildID=1215430
> fc29: http://koji.fedoraproject.org/koji/buildinfo?buildID=1215433
> fc28: http://koji.fedoraproject.org/koji/buildinfo?buildID=1215434
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This is an issue with the build dependencies. python3 should be replaced with
python3-devel.
From the SPEC on the build section: %cmake -DCMAKE_BUILD_TYPE=Release
-DPYTHON_EXECUTABLE=%{__python3} ..
The %{__python3} macro will be defined when python3-devel is present in the
build environment (to /usr/bin/python3).
In your build logs, it evaluates correctly on F30 but it stays like that in F29
and F28, so my guess would be that
something pulls python3-devel in the buildroot of F30, either one of the other
dependencies or something else,
which is not the case for the other releases.
Nevertheless the rawhide build was basically successful by accident. I've tried
a scratch build on F28 with
python3-devel as BuildRequires and it succeeded:
https://koji.fedoraproject.org/koji/taskinfo?taskID=33010465
--
Regards,
Charalampos Stratakis
Software Engineer
Python Maintenance Team, Red Hat
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