Cannot build ufomap_rviz_plugins

[cmakelabs]

Hello, I am trying to build ufomap, but I encountered the following issue:

Errors     << ufomap_rviz_plugins:make /home/nuc/ufo_ws/logs/ufomap_rviz_plugins/build.make.001.log                                        
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:48,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /opt/ros/noetic/include/rviz/properties/property.h:34,
                 from /opt/ros/noetic/include/rviz/properties/status_property.h:32,
                 from /opt/ros/noetic/include/rviz/display.h:38,
                 from /home/nuc/ufo_ws/src/ufomap/ufomap_ros/ufomap_rviz_plugins/include/ufomap_rviz_plugins/ufomap_display.h:56,
                 from /home/nuc/ufo_ws/src/ufomap/ufomap_ros/ufomap_rviz_plugins/src/ufomap_display.cpp:44:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h: In instantiation of ‘static typename std::enable_if<(QtPrivate::FunctionPointer<Func2>::ArgumentCount == -1), QMetaObject::Connection>::type QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, const QObject*, Func2, Qt::ConnectionType) [with Func1 = void (rviz::Property::*)(); Func2 = std::nullptr_t; typename std::enable_if<(QtPrivate::FunctionPointer<Func2>::ArgumentCount == -1), QMetaObject::Connection>::type = QMetaObject::Connection; typename QtPrivate::FunctionPointer<Func>::Object = rviz::Property]’:
/opt/ros/noetic/include/rviz/properties/property.h:187:94:   required from ‘typename std::enable_if<(! QtPrivate::FunctionPointer<Func>::IsPointerToMemberFunction), QMetaObject::Connection>::type rviz::Property::connect(const QObject*, Func&&, Qt::ConnectionType) [with Func = std::nullptr_t; typename std::enable_if<(! QtPrivate::FunctionPointer<Func>::IsPointerToMemberFunction), QMetaObject::Connection>::type = QMetaObject::Connection]’
/opt/ros/noetic/include/rviz/properties/string_property.h:56:5:   required from ‘rviz::StringProperty::StringProperty(const QString&, const QString&, const QString&, rviz::Property*, Func&&, const R*) [with Func = std::nullptr_t; R = ufomap_ros::rviz_plugins::UFOMapDisplay]’
/home/nuc/ufo_ws/src/ufomap/ufomap_ros/ufomap_rviz_plugins/src/ufomap_display.cpp:80:88:   required from here
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:314:9: error: static assertion failed: Signal and slot arguments are not compatible.
  314 |         Q_STATIC_ASSERT_X((FunctorArgumentCount >= 0),
      |         ^~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:50,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /opt/ros/noetic/include/rviz/properties/property.h:34,
                 from /opt/ros/noetic/include/rviz/properties/status_property.h:32,
                 from /opt/ros/noetic/include/rviz/display.h:38,
                 from /home/nuc/ufo_ws/src/ufomap/ufomap_ros/ufomap_rviz_plugins/include/ufomap_rviz_plugins/ufomap_display.h:56,
                 from /home/nuc/ufo_ws/src/ufomap/ufomap_ros/ufomap_rviz_plugins/src/ufomap_display.cpp:44:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h: In instantiation of ‘struct QtPrivate::FunctorReturnType<std::nullptr_t, QtPrivate::List<> >’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:317:158:   required from ‘static typename std::enable_if<(QtPrivate::FunctionPointer<Func2>::ArgumentCount == -1), QMetaObject::Connection>::type QObject::connect(const typename QtPrivate::FunctionPointer<Func>::Object*, Func1, const QObject*, Func2, Qt::ConnectionType) [with Func1 = void (rviz::Property::*)(); Func2 = std::nullptr_t; typename std::enable_if<(QtPrivate::FunctionPointer<Func2>::ArgumentCount == -1), QMetaObject::Connection>::type = QMetaObject::Connection; typename QtPrivate::FunctionPointer<Func>::Object = rviz::Property]’
/opt/ros/noetic/include/rviz/properties/property.h:187:94:   required from ‘typename std::enable_if<(! QtPrivate::FunctionPointer<Func>::IsPointerToMemberFunction), QMetaObject::Connection>::type rviz::Property::connect(const QObject*, Func&&, Qt::ConnectionType) [with Func = std::nullptr_t; typename std::enable_if<(! QtPrivate::FunctionPointer<Func>::IsPointerToMemberFunction), QMetaObject::Connection>::type = QMetaObject::Connection]’
/opt/ros/noetic/include/rviz/properties/string_property.h:56:5:   required from ‘rviz::StringProperty::StringProperty(const QString&, const QString&, const QString&, rviz::Property*, Func&&, const R*) [with Func = std::nullptr_t; R = ufomap_ros::rviz_plugins::UFOMapDisplay]’
/home/nuc/ufo_ws/src/ufomap/ufomap_ros/ufomap_rviz_plugins/src/ufomap_display.cpp:80:88:   required from here
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:367:52: error: request for member ‘operator()’ in ‘QtPrivate::FunctorReturnType<std::nullptr_t, QtPrivate::List<> >::dummy<std::nullptr_t>()’, which is of non-class type ‘std::nullptr_t’
  367 |         typedef decltype(dummy<Functor>().operator()((dummy<ArgList>())...)) Value;
      |                          ~~~~~~~~~~~~~~~~~~~~~~~~~~^
make[2]: *** [CMakeFiles/ufomap_rviz_plugins.dir/build.make:80: CMakeFiles/ufomap_rviz_plugins.dir/src/ufomap_display.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:216: CMakeFiles/ufomap_rviz_plugins.dir/all] Error 2
make: *** [Makefile:141: all] Error 2

Everything else seems to be fine, but this issue is a bit ambiguous, may you please help overcoming it?

[gityeezy]

I have the same problem, have you solved it?

[cmakelabs]

Unfortunately, not yet

[gityeezy]

Actually, I don't know what the problem is exactly, but I figured out that it might be an issue with the device. I use two other computers, both of which are pure ubuntu systems, and they can compile successfully. But only my computer doesn't work. You can try changing the device.

[cmakelabs]

Thanks for informing, but there certainly should be a software solution or at least workaround, I hope the authors can suggest something in that regard, at least for me to understand what usually could cause such issues

[bit-lsj]

Hello, you can replace lines 79-88 of the ufomap_display.cpp file with the following code： resolution_property_ = new rviz::StringProperty( "Resolution", "", "Resolution of the occupancy map", info_property_); num_leaf_nodes_property_ = new rviz::StringProperty("# Leaf Nodes", "", "Number of leaf nodes in the octree", info_property_); num_inner_nodes_property_ = new rviz::StringProperty("# Inner Nodes", "", "Number of inner nodes in the octree", info_property_); size_property_ = new rviz::StringProperty("Size", "", "Size of the octree", info_property_);

[cmakelabs]

Thank you, it works!