build error on Ubuntu 18.04 & ROS melodic

[Wang-Bo-xuan]

Linking CXX executable /home/wangboxuan/Desktop/map_ws/devel/lib/interactive_slam/interactive_slam CMakeFiles/interactive_slam.dir/src/hdl_graph_slam/plane_detection_window.cpp.o:(.data.rel.ro._ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE[_ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE]+0x28): undefined reference to pcl::SampleConsensusModelPlanepcl::PointXYZI::computeModelCoefficients(std::vector<int, std::allocator > const&, Eigen::Matrix<float, -1, 1, 0, -1, 1>&) const'
CMakeFiles/interactive_slam.dir/src/hdl_graph_slam/plane_detection_window.cpp.o:(.data.rel.ro._ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE[_ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE]+0x30): undefined reference to pcl::SampleConsensusModelPlane<pcl::PointXYZI>::optimizeModelCoefficients(std::vector<int, std::allocator<int> > const&, Eigen::Matrix<float, -1, 1, 0, -1, 1> const&, Eigen::Matrix<float, -1, 1, 0, -1, 1>&) const' CMakeFiles/interactive_slam.dir/src/hdl_graph_slam/plane_detection_window.cpp.o:(.data.rel.ro._ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE[_ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE]+0x38): undefined reference to pcl::SampleConsensusModelPlanepcl::PointXYZI::getDistancesToModel(Eigen::Matrix<float, -1, 1, 0, -1, 1> const&, std::vector<double, std::allocator >&) const'
CMakeFiles/interactive_slam.dir/src/hdl_graph_slam/plane_detection_window.cpp.o:(.data.rel.ro._ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE[_ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE]+0x48): undefined reference to pcl::SampleConsensusModelPlane<pcl::PointXYZI>::countWithinDistance(Eigen::Matrix<float, -1, 1, 0, -1, 1> const&, double) const' CMakeFiles/interactive_slam.dir/src/hdl_graph_slam/plane_detection_window.cpp.o:(.data.rel.ro._ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE[_ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE]+0x50): undefined reference to pcl::SampleConsensusModelPlanepcl::PointXYZI::projectPoints(std::vector<int, std::allocator > const&, Eigen::Matrix<float, -1, 1, 0, -1, 1> const&, pcl::PointCloudpcl::PointXYZI&, bool) const'
CMakeFiles/interactive_slam.dir/src/hdl_graph_slam/plane_detection_window.cpp.o:(.data.rel.ro._ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE[_ZTVN3pcl25SampleConsensusModelPlaneINS_9PointXYZIEEE]+0x58): undefined reference to pcl::SampleConsensusModelPlane<pcl::PointXYZI>::doSamplesVerifyModel(std::set<int, std::less<int>, std::allocator<int> > const&, Eigen::Matrix<float, -1, 1, 0, -1, 1> const&, double) const' collect2: error: ld returned 1 exit status interactive_slam/CMakeFiles/interactive_slam.dir/build.make:970: recipe for target '/home/wangboxuan/Desktop/map_ws/devel/lib/interactive_slam/interactive_slam' failed make[2]: *** [/home/wangboxuan/Desktop/map_ws/devel/lib/interactive_slam/interactive_slam] Error 1 CMakeFiles/Makefile2:4845: recipe for target 'interactive_slam/CMakeFiles/interactive_slam.dir/all' failed make[1]: *** [interactive_slam/CMakeFiles/interactive_slam.dir/all] Error 2 Makefile:140: recipe for target 'all' failed make: *** [all] Error 2

As we can see, it reminds us that cmake can't find the PCL SampleConsensusModelPlane function in the link phase. I've installed PCL 1.8 and so many dependence libs, but i can't solve this problem. I'm not familiar with PCL, I want to know what's wrong.Thanks.

[Jaqen81]

To check if your pcl is correctly installed, you could use pcl-viewer to check a .pcd file

[doche]

hi, how to install imgui lib, thanks.