Bug#971128: gazebo: FTBFS: ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TerrainEditorPalette::staticMetaObject'

[Lucas Nussbaum]

Source: gazebo
Version: 11.0.0+dfsg1-4
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20200926 ftbfs-bullseye

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

Relevant part (hopefully):
> /usr/bin/c++ -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2       -Wall -Wextra -Wno-long-long -Wno-unused-value -Wfloat-equal -Wshadow -Wswitch-default -Wmissing-include-dirs -pedantic -fvisibility=hidden -fvisibility-inlines-hidden -std=c++14 -Wl,-z,relro -Wl,-z,now CMakeFiles/gzclient.dir/gzclient_autogen/mocs_compilation.cpp.o CMakeFiles/gzclient.dir/main.cc.o CMakeFiles/gzclient.dir/qrc_resources.cpp.o -o gzclient-11.0.0   -L/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/test  -Wl,-rpath,/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/test:/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/gazebo/gui:/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/gazebo:/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/gazebo/util:/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/gazebo/rendering:/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/gazebo/transport:/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/gazebo/msgs:/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/gazebo/common: libgazebo_gui.so.11.0.0 -lpthread /usr/lib/libspnav.so ../libgazebo_client.so.11.0.0 ../util/libgazebo_util.so.11.0.0 -ltinyxml2 ../rendering/libgazebo_rendering.so.11.0.0 ../transport/libgazebo_transport.so.11.0.0 -ltbb -latomic /usr/lib/x86_64-linux-gnu/libGL.so /usr/lib/x86_64-linux-gnu/libGLU.so -lX11 ../msgs/libgazebo_msgs.so.11.0.0 ../common/libgazebo_common.so.11.0.0 /usr/lib/x86_64-linux-gnu/libcurl.so /usr/lib/x86_64-linux-gnu/libfreeimage.so /usr/lib/x86_64-linux-gnu/libignition-common3-graphics.so.3.5.0 /usr/lib/x86_64-linux-gnu/libignition-fuel_tools4.so.4.1.0 /usr/lib/x86_64-linux-gnu/libignition-common3.so.3.5.0 /usr/lib/x86_64-linux-gnu/libdl.so /usr/lib/x86_64-linux-gnu/libtar.so /usr/lib/x86_64-linux-gnu/libsdformat9.so.9.3.0 /usr/lib/x86_64-linux-gnu/libprotobuf.so /usr/lib/libqtpropertybrowser.so.4 /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.14.2 /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.14.2 /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.14.2 -lOgreRTShaderSystem -lOgreMain -lOgreTerrain -lOgrePaging -lOgreOverlay -lOgreMain -lOgreTerrain -lOgrePaging -lOgreOverlay /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.71.0 /usr/lib/x86_64-linux-gnu/libboost_atomic.so.1.71.0 /usr/lib/x86_64-linux-gnu/libboost_system.so.1.71.0 /usr/lib/x86_64-linux-gnu/libboost_filesystem.so.1.71.0 /usr/lib/x86_64-linux-gnu/libboost_program_options.so.1.71.0 /usr/lib/x86_64-linux-gnu/libboost_regex.so.1.71.0 /usr/lib/x86_64-linux-gnu/libboost_iostreams.so.1.71.0 /usr/lib/x86_64-linux-gnu/libboost_date_time.so.1.71.0 -ltinyxml /usr/lib/libqwt-qt5.so -lpthread /usr/lib/x86_64-linux-gnu/libignition-transport8.so.8.0.0 /usr/lib/x86_64-linux-gnu/libignition-msgs5.so.5.1.0 /usr/lib/x86_64-linux-gnu/libignition-math6.so.6.4.0 /usr/lib/x86_64-linux-gnu/libprotobuf.so -lpthread /usr/lib/x86_64-linux-gnu/libuuid.so /usr/lib/x86_64-linux-gnu/libuuid.so /usr/lib/x86_64-linux-gnu/libcdt.so /usr/lib/x86_64-linux-gnu/libcgraph.so /usr/lib/x86_64-linux-gnu/libgvc.so /usr/lib/libspnav.so 
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TerrainEditorPalette::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::IncrementalPlot'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TimePanel::SetTimeWidgetVisible(bool)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::qt_metacast(char const*)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::InsertModelWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TopicView::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ModelRightMenu'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::CloneWindow'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LevelInspectorDialog::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointForceControl::changed(double, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::DepthChanged(double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ConfigWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::ColorChanged(ignition::math::v6::Color const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ModelPluginData'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::MainWindow::Close()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::WallInspectorDialog::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::DoubleValueChanged(QString const&, double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::DataLogger'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::WallSegmentItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ImportDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::AlignWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::UserCmdHistory::StatsSignal()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::MeasureItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::BuildingModelManip::TextureChanged(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::TopicView'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::StairsItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ImageFrame::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::TopicSelector'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointPIDVelControl::pChanged(double, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::IncrementalPlot::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VideoRecorder::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::ShowPause()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::CollisionConfig::CollisionRemoved(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LinkInspector::ShowVisuals(bool)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::WallSegmentItem::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::WindowItem::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ImportImageDialog::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::EnumConfigWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::LogPlayWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::BuildingModelManip::ColorChanged(ignition::math::v6::Color const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::WindowItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ImportImageDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::DoorItem::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VisualConfig::VisualRemoved(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VisualConfig::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::EnumValueChanged(QString const&, QString const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::PosZChanged(double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointPIDVelControl::dChanged(double, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VariablePill::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ImageView'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VariablePill::VariableRemoved(unsigned int)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::PlotCanvas::CanvasDeleted()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::EditableLabel'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VisualConfig::Applied()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::VisualConfigData'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ConfigChildWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::SetEndTime(gazebo::common::Time const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::ItemDeleted()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::BuildingModelManip'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EnumConfigWidget::EnumValueChanged(QString const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::DataLogger::SetDestinationURI(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::DensityConfigWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::PlotWindow'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VideoRecorder::RecordingStarted()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::LinkConfig'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TopicSelector::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::PosYChanged(double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::InsertModelWidget::UpdateFuel(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::LevelChanged(int)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ModelEditorPalette'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointPIDPosControl::dChanged(double, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::PosXChanged(double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::HidePlay()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::WindowDoorInspectorDialog::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ModelCreator::LinkAdded()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::CollisionConfig::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ModelEditor'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ApplyWrenchDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::BuildingEditorPalette'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::StairsItem::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::BuildingEditor'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::DataLogger::SetDestinationPath(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::CollisionConfig::CollisionChanged(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::SplashScreen::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::JointData'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::LinkData'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ModelPluginInspector::Applied()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::FloorItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LinkConfig::Applied()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::SetEndTime(QString const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LevelWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::HeightChanged(double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ExtrudeDialog::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::WidthChanged(double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointPIDVelControl::changed(double, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointControlWidget::repReceived(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, ignition::msgs::JointCmd const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::DeleteAction'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::VisualConfig'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TimeWidget::SetIterations(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::RenderWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::RenderWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ImportImageView'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VideoRecorder::RecordingStopped()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::ColorValueChanged(QString const&, ignition::math::v6::Color const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VariablePillContainer::VariableRemoved(unsigned int, unsigned int)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TextView::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointInspector::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::DensityConfigWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::IncrementalPlot::VariableAdded(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::Palette::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::SaveEntityDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VariablePillContainer::VariableAdded(unsigned int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned int)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VariablePill::VariableMoved(unsigned int)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ModelListWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VariablePill::VariableAdded(unsigned int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ToolsWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::GroupWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointPIDPosControl::changed(double, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::LevelWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::CollisionConfigData::CollisionChanged(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ImportImageDialog::SetFileName(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::JointPIDVelControl'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::CollisionConfigData'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::GLWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::CloneWindow::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::JointControlWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::LogPlayView'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LinkInspector::ShowCollisions(bool)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::DensityValueChanged(double const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::SetCurrentMinutes(QString const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VariablePillContainer::VariableMoved(unsigned int, unsigned int)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::LinkInspector'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::Vector3dValueChanged(QString const&, ignition::math::v6::Vector3<double> const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::DataLogger::SetSize(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::HidePause()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::GraphScene::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::WindowDoorInspectorDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointPIDVelControl::iChanged(double, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TopToolbar::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointPIDPosControl::iChanged(double, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::PoseValueChanged(QString const&, ignition::math::v6::Pose3<double> const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::SchematicViewWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::SaveEntityDialog::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TextView::AddMsg(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::UserCmdHistory'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TimePanel::SetLogPlayWidgetVisible(bool)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ModelCreator'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::StairsInspectorDialog::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::ShowPlay()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::InsertModelWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::DataLogger::SetTime(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointControlWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::FloorItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::UIntValueChanged(QString const&, unsigned int)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ExportDialog::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::JointPIDPosControl'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::DoorItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LinkConfig::MassValueChanged(double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::PlotCanvas'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::VideoRecorder'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::VariablePillContainer'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ModelEditor::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::BuildingEditor::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::AlignWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TimeWidget::SetFPS(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::MEUserCmdManager'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VisualConfig::VisualAdded(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::GroupWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::RectItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::DataLogger::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::GLWidget::clicked()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::GraphView::itemDoubleClicked(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::GLWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::TimeWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::ConfigChildWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LinkInspector::Applied()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointPIDPosControl::pChanged(double, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::JointInspector'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::RectItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::StairsInspectorDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::TerrainEditor'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::BaseInspectorDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::MassValueChanged(double const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::metaObject() const'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VariablePill::VariableLabelChanged(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::WallInspectorDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LinkInspector::Accepted()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ExtrudeDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::MainWindow::AddPlugins()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ImagesView'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ModelCreator::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointMaker::JointAdded()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::qt_metacall(QMetaObject::Call, int, void**)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::GraphView::customContextMenuRequested(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::TransparencyChanged(float)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::BoolValueChanged(QString const&, bool)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::GeometryConfigWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::DeleteAction::DeleteSignal(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::RectItem::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LinkInspector::ShowLinkFrame(bool)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointCreationDialog::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ModelRightMenu::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ModelTreeWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::MeasureItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ImagesView::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::PositionChanged(double, double, double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::LayersWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::GraphScene'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::CollisionConfig'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::DoorItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::BaseInspectorDialog::Applied()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LaserView::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ModelPluginInspector'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TimeWidget::SetRealTime(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ExportDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::PlotCanvas::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VariablePillContainer::VariableLabelChanged(unsigned int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::TerrainEditorPalette'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointMaker::EmitLinkInserted(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LinkConfig::DensityValueChanged(double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::EditorItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::Palette::IntrospectionUpdateSignal(std::set<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointMaker::EmitLinkRemoved(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointMaker::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::DensityConfigWidget::DensityValueChanged(double const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ViewAngleWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::JointForceControl'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ScaleWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TimeWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::BuildingEditorPalette::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::GeometryValueChanged(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, ignition::math::v6::Vector3<double> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::TopToolbar'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::EditorView'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::TimePanel'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::SetStartTime(gazebo::common::Time const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::TimePanel'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::JointCreationDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::SplashScreen'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayView::Seek(gazebo::common::Time const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LinkInspector::Opened()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::Editor'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::YawChanged(double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::EnumConfigWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::GraphView'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::JointInspector::Applied()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::TextView'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::GeometryChanged()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::WallSegmentItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::Palette'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ModelListWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::VariablePill'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ApplyWrenchDialog::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ModelEditorPalette::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::LaserView'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::TimeWidget::SetSimTime(QString)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::MainWindow::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::JointMaker'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigChildWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VisualConfig::ShowVisual(bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::GeometryConfigWidget::GeometryChanged()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ImportDialog::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::LevelInspectorDialog'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ImageFrame'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::SetCurrentSeconds(QString const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::CollisionConfig::ShowCollision(bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::EditorView'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::CollisionConfig::Applied()'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::SetCurrentTime(gazebo::common::Time const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `typeinfo for gazebo::gui::StairsItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::MainWindow'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorView::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::StringValueChanged(QString const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::WindowItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::RotationChanged(double, double, double)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::SetCurrentHours(QString const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::EditorItem::TextureChanged(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ConfigWidget::IntValueChanged(QString const&, int)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ModelTreeWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::ViewState'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::CollisionConfig::CollisionAdded(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::EditorItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::GeometryConfigWidget'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::SchematicViewWidget::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LogPlayWidget::SetCurrentDays(QString const&)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::VideoRecorder::RecordingChanged(bool)'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `vtable for gazebo::gui::CurrentTimeItem'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ImageView::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::LinkInspector::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::ModelPluginInspector::staticMetaObject'
> /usr/bin/ld: libgazebo_gui.so.11.0.0: undefined reference to `gazebo::gui::MainWindow::TrackVisual(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
> collect2: error: ld returned 1 exit status

The full build log is available from:
   http://qa-logs.debian.net/2020/09/26/gazebo_11.0.0+dfsg1-4_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.