CMake Error: The following variables are used in this project, but they are set to NOTFOUND. about dbscan-pcl-optimized

[danielTobon43]

Good day. I think may be the error is in the linking library part, try replacing:

##############################################################################
# TARGET LIBRARIES
##############################################################################
target_link_libraries(${PROJECT_NAME}  ${PCL_COMMON_LIBRARIES} ${PCL_IO_LIBRARIES} ${PCL_VISUALIZATION_LIBRARY})

with:

##############################################################################
# TARGET LIBRARIES
##############################################################################
target_link_libraries(${PROJECT_NAME}  ${PCL_LIBRARIES})

[danielTobon43]

By the way, the pcl build path should not end with "/", just: set(PCL_DIR /home/gz/pcl/release)

[defendergz]

hi!
thank u reply! after i modified cmakelist.txt:
in line 20:

and in line 89,added boost_system boost_filesystem ${PCL_LIBRARIES}:

i cmake .. && make correctly.and run this ./dbscan .......everything is ok.
but a few days later, it doesn't work.so i delete all dir/file in build.and recompile.
cmake .. is ok, but when run make, i got some error:
Scanning dependencies of target dbscan CMakeFiles/dbscan.dir/main.cpp.o: In function `readCloudFromFile(int, char**, std::vector<htr::Point3D, std::allocator<htr::Point3D> >&, boost::shared_ptr<pcl::PointCloud<pcl::PointXYZRGB> >&)': main.cpp:(.text+0x1322): undefined reference to `pcl::io::loadPolygonFile(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, pcl::PolygonMesh&)' collect2: error: ld returned 1 exit status CMakeFiles/dbscan.dir/build.make:366: recipe for target 'bin/dbscan' failed make[2]: *** [bin/dbscan] Error 1 CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/dbscan.dir/all' failed make[1]: *** [CMakeFiles/dbscan.dir/all] Error 2 Makefile:83: recipe for target 'all' failed make: *** [all] Error 2
could u plz help me fix it? thank u.

[danielTobon43]

Again, it is a problem of linking pcl correctly. I'm going to leave the general version of the CMakeList.txt project on GitHub. Go back to download again DBScan from the GitHub and try to compile it.

[danielTobon43]

When you compile the project with cmake, verify that the pcl include part (which is printed on the terminal) comes from your PCL_dir and not from the pcl of ROS

[danielTobon43]

If you use: ${PCL_LIBRARIES} it is not necessary the link to Boost library (pcl already does)