Package: src:step
Version: 4:24.12.0-1
Severity: important
Tags: sid forky
User: debian-...@lists.debian.org
Usertags: ftbfs-gcc-15

[This bug is NOT targeted to the upcoming trixie release]

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-15/g++-15, but succeeds to build with gcc-14/g++-14. The
severity of this report will be raised before the forky release.

The full build log can be found at:
http://qa-logs.debian.net/2025/02/16/amd64exp/step_24.12.0-1_unstable_gccexp.log.gz
The last lines of the build log are at the end of this report.

To build with GCC 15, either set CC=gcc-15 CXX=g++-15 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

GCC 15 now defaults to the C23/C++23 standards, exposing many FTBFS.
Other Common build failures are new warnings resulting in build failures
with -Werror turned on, or new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-15/porting_to.html

[...]
/usr/include/x86_64-linux-gnu/qt6/QtCore/qnamespace.h:438:9: note: declared here
  438 |         AA_UseHighDpiPixmaps Q_DECL_ENUMERATOR_DEPRECATED_X(
      |         ^~~~~~~~~~~~~~~~~~~~
[100%] Linking CXX executable ../bin/step
cd /build/reproducible-path/step-24.12.0/obj-x86_64-linux-gnu/step && 
/usr/bin/cmake -E cmake_link_script CMakeFiles/step.dir/link.txt --verbose=1
/usr/bin/ld: CMakeFiles/step.dir/clipboard.cc.o:(.rodata+0xd8): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/mainwindow.cc.o:(.rodata+0x668): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/worldmodel.cc.o:(.rodata+0x334): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/worldscene.cc.o:(.rodata+0x81c): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/worldgraphics.cc.o:(.rodata+0x58): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/worldbrowser.cc.o:(.rodata+0x58): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/propertiesbrowser.cc.o:(.rodata+0x3c4): 
multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/infobrowser.cc.o:(.rodata+0x38c): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/undobrowser.cc.o:(.rodata+0x150): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/itempalette.cc.o:(.rodata+0x1a4): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/worldfactory.cc.o:(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/stepgraphicsitem.cc.o:(.rodata+0x80): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/particlegraphics.cc.o:(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/polygongraphics.cc.o:(.rodata+0x168): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/gasgraphics.cc.o:(.rodata+0x228): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/gascreationdialog.cc.o:(.rodata+0x5c): 
multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/softbodygraphics.cc.o:(.rodata+0x140): 
multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/springgraphics.cc.o:(.rodata+0x10): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/motorgraphics.cc.o:(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/jointgraphics.cc.o:(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
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definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/simulationthread.cc.o:(.rodata+0xac): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/latexformula.cc.o:(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/messageframe.cc.o:(.rodata+0x168): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/main.cc.o:(.rodata+0x0): multiple definition 
of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/choicesmodel.cc.o:(.rodata+0x58): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/settings.cpp.o:(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: CMakeFiles/step.dir/ECMQmLoader-step_qt.cpp.o:(.rodata+0x29): 
multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(object.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(item.cc.o):(.rodata+0x0): multiple definition 
of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(body.cc.o):(.rodata+0x0): multiple definition 
of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(objecterrors.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(force.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(itemgroup.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
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definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
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definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(particle.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(rigidbody.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(gas.cc.o):(.rodata+0x0): multiple definition 
of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(softbody.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(gravitation.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(coulombforce.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(spring.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(motor.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(tool.cc.o):(.rodata+0x0): multiple definition 
of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(joints.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(solver.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
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definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
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multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
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multiple definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(xmlfile.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(gslsolver.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(material.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
/usr/bin/ld: ../lib/libstepcore.a(joint.cc.o):(.rodata+0x0): multiple 
definition of `QtPrivate::IsFloatType_v<_Float16>'; 
CMakeFiles/step.dir/arrow.cc.o:(.rodata+0x0): first defined here
collect2: error: ld returned 1 exit status
/usr/bin/c++ -g -O2 -ffile-prefix-map=/build/reproducible-path/step-24.12.0=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 
-fno-operator-names -fno-exceptions -Wall -Wextra -Wcast-align 
-Wchar-subscripts -Wformat-security -Wno-long-long -Wpointer-arith -Wundef 
-Wnon-virtual-dtor -Woverloaded-virtual -Werror=return-type -Werror=init-self 
-Wvla -Wdate-time -Wsuggest-override -Wlogical-op -Wno-suggest-override 
-Wl,--enable-new-dtags -Wl,-z,relro -Wl,-z,now 
CMakeFiles/step.dir/step_autogen/mocs_compilation.cpp.o 
CMakeFiles/step.dir/arrow.cc.o CMakeFiles/step.dir/clipboard.cc.o 
CMakeFiles/step.dir/mainwindow.cc.o CMakeFiles/step.dir/worldmodel.cc.o 
CMakeFiles/step.dir/worldscene.cc.o CMakeFiles/step.dir/worldgraphics.cc.o 
CMakeFiles/step.dir/worldbrowser.cc.o 
CMakeFiles/step.dir/propertiesbrowser.cc.o CMakeFiles/step.dir/infobrowser.cc.o 
CMakeFiles/step.dir/undobrowser.cc.o CMakeFiles/step.dir/itempalett
 e.cc.o CMakeFiles/step.dir/worldfactory.cc.o 
CMakeFiles/step.dir/stepgraphicsitem.cc.o 
CMakeFiles/step.dir/particlegraphics.cc.o 
CMakeFiles/step.dir/polygongraphics.cc.o CMakeFiles/step.dir/gasgraphics.cc.o 
CMakeFiles/step.dir/gascreationdialog.cc.o 
CMakeFiles/step.dir/softbodygraphics.cc.o 
CMakeFiles/step.dir/springgraphics.cc.o CMakeFiles/step.dir/motorgraphics.cc.o 
CMakeFiles/step.dir/jointgraphics.cc.o CMakeFiles/step.dir/toolgraphics.cc.o 
CMakeFiles/step.dir/simulationthread.cc.o CMakeFiles/step.dir/unitscalc.cc.o 
CMakeFiles/step.dir/latexformula.cc.o CMakeFiles/step.dir/messageframe.cc.o 
CMakeFiles/step.dir/main.cc.o CMakeFiles/step.dir/choicesmodel.cc.o 
CMakeFiles/step.dir/settings.cpp.o 
"CMakeFiles/step.dir/ECMQmLoader-step_qt.cpp.o" 
CMakeFiles/step.dir/step_autogen/EWIEGA46WW/qrc_step.cpp.o -o ../bin/step  
../lib/libstepcore.a /usr/lib/x86_64-linux-gnu/libKF6KIOWidgets.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6TextWidgets.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6Plotting.s
 o.6.10.0 /usr/lib/x86_64-linux-gnu/libKF6NewStuffWidgets.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6XmlGui.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libQt6OpenGLWidgets.so.6.7.2 
/usr/lib/x86_64-linux-gnu/libgsl.so /usr/lib/x86_64-linux-gnu/libgslcblas.so 
/usr/lib/x86_64-linux-gnu/libKF6KIOGui.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6KIOCore.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6Crash.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6JobWidgets.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6Service.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6Solid.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6Completion.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6SonnetUi.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6NewStuffCore.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6Attica.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libQt6Network.so.6.7.2 
/usr/lib/x86_64-linux-gnu/libQt6Xml.so.6.7.2 
/usr/lib/x86_64-linux-gnu/libKF6ConfigWidgets.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6CoreAddons.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6IconThem
 es.so.6.10.0 /usr/lib/x86_64-linux-gnu/libKF6ColorScheme.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6I18n.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6WidgetsAddons.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6ConfigGui.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libKF6ConfigCore.so.6.10.0 
/usr/lib/x86_64-linux-gnu/libQt6DBus.so.6.7.2 
/usr/lib/x86_64-linux-gnu/libQt6Widgets.so.6.7.2 
/usr/lib/x86_64-linux-gnu/libQt6OpenGL.so.6.7.2 
/usr/lib/x86_64-linux-gnu/libQt6Gui.so.6.7.2 
/usr/lib/x86_64-linux-gnu/libQt6Core.so.6.7.2 
/usr/lib/x86_64-linux-gnu/libGLX.so /usr/lib/x86_64-linux-gnu/libOpenGL.so
make[3]: *** [step/CMakeFiles/step.dir/build.make:651: bin/step] Error 1
make[3]: Leaving directory 
'/build/reproducible-path/step-24.12.0/obj-x86_64-linux-gnu'
make[2]: *** [CMakeFiles/Makefile2:4223: step/CMakeFiles/step.dir/all] Error 2
make[2]: Leaving directory 
'/build/reproducible-path/step-24.12.0/obj-x86_64-linux-gnu'
make[1]: *** [Makefile:149: all] Error 2
make[1]: Leaving directory 
'/build/reproducible-path/step-24.12.0/obj-x86_64-linux-gnu'
dh_auto_build: error: cd obj-x86_64-linux-gnu && make -j8 "INSTALL=install 
--strip-program=true" VERBOSE=1 returned exit code 2
make: *** [debian/rules:6: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2

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