Dear maintainer,

During a test rebuild for CMake 4, musescore-sftools failed to rebuild.

Log Summary:
-------------------------------------------------------------------------------
[...]

//Value Computed by CMake
sf3convert_SOURCE_DIR:STATIC=/build/reproducible-path/musescore-sftools-20201011


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dh_auto_configure: error: cd obj-aarch64-linux-gnu && DEB_PYTHON_INSTALL_LAYOUT=deb PKG_CONFIG=/usr/bin/pkg-config cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=None -DCMAKE_INSTALL_SYSCONFDIR=/etc -DCMAKE_INSTALL_LOCALSTATEDIR=/var -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON -DCMAKE_FIND_USE_PACKAGE_REGISTRY=OFF -DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON -DFETCHCONTENT_FULLY_DISCONNECTED=ON -DCMAKE_INSTALL_RUNSTATEDIR=/run -DCMAKE_SKIP_INSTALL_ALL_DEPENDENCY=ON "-GUnix Makefiles" -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_INSTALL_LIBDIR=lib/aarch64-linux-gnu .. returned exit code 1
make: *** [debian/rules:18: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
--------------------------------------------------------------------------------
Build finished at 2025-08-30T08:49:36Z
-------------------------------------------------------------------------------

The above is just how the build ends and not necessarily the most relevant part.
If required, the full build log is available here (for the next 30 days):
https://debusine.debian.net/artifact/2404632/

The most likely cause of build failures is the removed backwards compatibility for
CMake versions earlier than 3.5. You can find additional information in my
debian-devel announcement:

https://lists.debian.org/debian-devel/2025/04/msg00310.html

About the archive rebuild: The build was made on debusine.debian.net,
using sbuild.

You can find the build task here:
https://debusine.debian.net/work-request/154174/

If this is really a bug in one of the build-depends, please use
reassign and affects, so that this is still visible in the BTS web
page for this package.

Thanks,
Timo

tags 1113305 + help
tags 1113306 + help
tags 1113307 + help
thanks

Ouch!

I need help with that. I don’t d̲o̲ cmake, and I already know I cannot
rely on upstream for anything regarding this. (Also, I’m pretty sure
upstream wouldn’t know either…)

I’d welcome something that I could simply slap into d/patches/ for
these packages (and comment out when building backports).

Every time I’ve tried to do something with cmake, I found myself
“steamrolled” by the docs, and especially the compatibility parts
I never got. (Not that I even tried to deal with it often at all…)

If it helps: the patch for src:musescore{2,3} will likely be only
one piece of work (even if the actual files and directories differ),
and -sftools is very likely just copied from musescore2 in the past
and trimmed down.

Thanks in advance,
//mirabilos

Hi Thorsten,

* Thorsten Glaser <tg@debian.org> [2025-09-01 02:37]:
Would it also be acceptable to have a small d/rules snippet? In that
case,

override_dh_auto_configure:
	dh_auto_configure --buildsystem=cmake -- \
	-DCMAKE_POLICY_VERSION_MINIMUM=3.5

will most likely be sufficient. There is a small chance that the build
relies on deprecated behavior and will still fail with this override. If
that is the case, I'll help you diagnose the issue and come up with a
more in-depth fix.

Cheers
Timo

I have downgraded the bug to non-RC severity temporarily and reverted
CMake in unstable to version 3.31.6. I plan to re-upgrade in about a
month's time. I realize that despite my April announcement, the upload
to unstable came rather surprising, and I don't want to cause
unnecessary pain.

Also, the build log URL has an unfortunate mistake. The correct URL
should include the workspace, i.e.,

https://debusine.debian.net/debian/developers/artifact/XXXX

CMake 4 will also be available in experimental again, so it can be
used to verify that the bug is fixed.

Cheers
Timo

Hi Timo,

Yes, of course!

OK, will try that in experimental, thanks.

That’s nice, thank you.

bye,
//mirabilos