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Already on GitHub? Sign in to your account libosgViz.so : undefined reference to 'non virtual thunk to osgga:: EventHandler:: event (OSG:: nodevisitor *, OSG:: drawable *') libosgViz.so : undefined reference to 'non virtual thunk to osgga:: EventHandler:: event (OSG:: nodevisitor *, OSG:: drawable *') 1ADZX opened this issue Jun 12, 2020 · 2 comments

Scanning dependencies of target osgViz_bin
[ 89%] Building CXX object src/CMakeFiles/osgViz_bin.dir/Main.cpp.o
[ 92%] Linking CXX executable osgViz_bin
libosgViz.so：对‘non-virtual thunk to osgGA::EventHandler::event(osg::NodeVisitor*, osg::Drawable*)’未定义的引用
libosgViz.so：对‘osg::NodeCallback::run(osg::Object*, osg::Object*)’未定义的引用
libosgViz.so：对‘osgGA::EventHandler::event(osg::NodeVisitor*, osg::Drawable*)’未定义的引用
libosgViz.so：对‘virtual thunk to osg::NodeCallback::run(osg::Object*, osg::Object*)’未定义的引用
libosgViz.so：对‘typeinfo for osgGA::EventHandler’未定义的引用
libosgViz.so：对‘osg::Callback::traverse(osg::Object*, osg::Object*)’未定义的引用
libosgViz.so：对‘osgGA::GUIEventHandler::handle(osgGA::Event*, osg::Object*, osg::NodeVisitor*)’未定义的引用
libosgViz.so：对‘osgViewer::View::addEventHandler(osgGA::EventHandler*)’未定义的引用
libosgViz.so：对‘non-virtual thunk to osgViewer::View::computeIntersections(osgGA::GUIEventAdapter const&, std::multiset<osgUtil::LineSegmentIntersector::Intersection, std::lessosgUtil::LineSegmentIntersector::Intersection, std::allocatorosgUtil::LineSegmentIntersector::Intersection >&, unsigned int)’未定义的引用
libosgViz.so：对‘osgGA::EventHandler::operator()(osg::Node*, osg::NodeVisitor*)’未定义的引用
libosgViz.so：对‘non-virtual thunk to osgViewer::View::computeIntersections(osgGA::GUIEventAdapter const&, std::vector<osg::Node*, std::allocatorosg::Node* > const&, std::multiset<osgUtil::LineSegmentIntersector::Intersection, std::lessosgUtil::LineSegmentIntersector::Intersection, std::allocatorosgUtil::LineSegmentIntersector::Intersection >&, unsigned int)’未定义的引用
libosgViz.so：对‘osgGA::EventHandler::handle(osgGA::Event*, osg::Object*, osg::NodeVisitor*)’未定义的引用
libPrimitivesFactory.so：对‘osg::Group::removeChild(osg::Node*)’未定义的引用
libosgViz.so：对‘vtable for osgGA::EventHandler’未定义的引用
libosgViz.so：对‘osg::Drawable::EventCallback::run(osg::Object*, osg::Object*)’未定义的引用
libosgViz.so：对‘virtual thunk to osg::Drawable::EventCallback::run(osg::Object*, osg::Object*)’未定义的引用
libosgViz.so：对‘VTT for osgGA::EventHandler’未定义的引用
libosgViz.so：对‘osgViewer::View::removeEventHandler(osgGA::EventHandler*)’未定义的引用
libPrimitivesFactory.so：对‘osg::Group::getNumChildren() const’未定义的引用
collect2: error: ld returned 1 exit status
src/CMakeFiles/osgViz_bin.dir/build.make:210: recipe for target 'src/osgViz_bin' failed
make[2]: *** [src/osgViz_bin] Error 1
CMakeFiles/Makefile2:202: recipe for target 'src/CMakeFiles/osgViz_bin.dir/all' failed
make[1]: *** [src/CMakeFiles/osgViz_bin.dir/all] Error 2
Makefile:129: recipe for target 'all' failed
make: *** [all] Error 2

I cannot reproduce this error.

I tried it in a docker container with ubuntu 18.04 where i installed build-essential, libopenscenegraph-dev, and base-cmake ( https://github.com/rock-core/base-cmake )

Can you give me some context on which system you are trying to build?
Is there possibly a source-build install of openscenegraph somewhere in your system?