# Fresh install, undefined references to 3rdParty stuff **URL:** \ **Category:** C++\ **Tags:** dnn, build, cuda\ **Created:** [January 31, 2023, 1:38pm UTC](https://forum.opencv.org/t/fresh-install-undefined-references-to-3rdparty-stuff/11827 "2023-01-31T13:38:40Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![VvV](https://avatars.discourse-cdn.com/v4/letter/v/41988e/32.png) [@VvV](https://forum.opencv.org/u/VvV)\ **Post date:** [January 31, 2023, 1:38pm UTC](https://forum.opencv.org/t/fresh-install-undefined-references-to-3rdparty-stuff/11827/1 "2023-01-31T13:38:40Z")
Hello, I’m trying to install **OpenCV 4.6** on my Ubuntu 22.4 Laptop (NVIDIA RTX 3070) I’m following this tutorial: [https://developer.ridgerun.com/wiki/index.php/Compiling\_OpenCV\_from\_Source](https://developer.ridgerun.com/wiki/index.php/Compiling_OpenCV_from_Source) (I tried theirs git, but the original one as well) I changed flags to ```auto cmake -D CMAKE_BUILD_TYPE=RELEASE \ *[develop] -D CMAKE_INSTALL_PREFIX=/usr/local \ -D OPENCV_GENERATE_PKGCONFIG=ON \ -D WITH_CUBLAS=1 \ -D WITH_TBB=ON \ –D WITH_VTK=OFF \ -D ENABLE_FAST_MATH=1 \ -D CUDA_FAST_MATH=1 \ -D WITH_CUDA=ON \ -D BUILD_opencv_cudacodec=ON \ -D WITH_CUDNN=ON \ -D OPENCV_DNN_CUDA=ON \ -D CUDA_ARCH_BIN=${GPU_ARCH} \ -D WITH_V4L=ON \ -D WITH_QT=OFF \ -D WITH_IPP=OFF \ -D WITH_EIGEN=OFF \ -D WITH_OPENGL=ON \ -D WITH_GSTREAMER=ON \ -D OPENCV_GENERATE_PKGCONFIG=ON \ -D OPENCV_ENABLE_NONFREE=ON \ -D PYTHON_EXECUTABLE=$(which python2) \ -D BUILD_opencv_python2=OFF \ -D PYTHON3_EXECUTABLE=$(which python3) \ -D PYTHON3_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \ -D PYTHON3_PACKAGES_PATH=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") \ -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules \ -D INSTALL_PYTHON_EXAMPLES=OFF \ -D INSTALL_C_EXAMPLES=OFF \ -D BUILD_SHARED_LIBS=OFF \ -D BUILD_EXAMPLES=OFF \ -D INSTALL_PYTHON_EXAMPLES=OFF \ -D INSTALL_C_EXAMPLES=OFF .. ``` I confirmed my CUDA and CUDNN installation - examples from both are building and running. Installation `make -> make install` is not throwing any errors and all is proceeding correctly (from what can I say) Build info: ```auto General configuration for OpenCV 4.6.0-dev ===================================== Version control: 2a4926f Extra modules: Location (extra): /home/v/Install/OpenCVRidge/opencv_contrib/modules Version control (extra): 940d910 Platform: Timestamp: 2023-01-31T12:21:32Z Host: Linux 5.15.0-58-generic x86_64 CMake: 3.22.1 CMake generator: Unix Makefiles CMake build tool: /usr/bin/gmake Configuration: RELEASE CPU/HW features: Baseline: SSE SSE2 SSE3 requested: SSE3 Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX SSE4_1 (18 files): + SSSE3 SSE4_1 SSE4_2 (2 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX AVX (5 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX AVX2 (33 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX512_SKX (8 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX C/C++: Built as dynamic libs?: NO C++ standard: 11 C++ Compiler: /usr/bin/c++ (ver 11.3.0) C++ flags (Release): -fsigned-char -ffast-math -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG C++ flags (Debug): -fsigned-char -ffast-math -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG C Compiler: /usr/bin/cc C flags (Release): -fsigned-char -ffast-math -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG C flags (Debug): -fsigned-char -ffast-math -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG Linker flags (Release): -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined Linker flags (Debug): -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined ccache: NO Precompiled headers: NO Extra dependencies: /usr/lib/x86_64-linux-gnu/libjpeg.so /usr/lib/x86_64-linux-gnu/libwebp.so /usr/lib/x86_64-linux-gnu/libpng.so /usr/lib/x86_64-linux-gnu/libtiff.so /usr/lib/x86_64-linux-gnu/libImath-2_5.so /usr/lib/x86_64-linux-gnu/libIlmImf-2_5.so /usr/lib/x86_64-linux-gnu/libIex-2_5.so /usr/lib/x86_64-linux-gnu/libHalf-2_5.so /usr/lib/x86_64-linux-gnu/libIlmThread-2_5.so /usr/lib/x86_64-linux-gnu/libfreetype.so /usr/lib/x86_64-linux-gnu/libharfbuzz.so /usr/lib/x86_64-linux-gnu/hdf5/serial/libhdf5.so /usr/lib/x86_64-linux-gnu/libcrypto.so /usr/lib/x86_64-linux-gnu/libcurl.so /usr/lib/x86_64-linux-gnu/libpthread.a /usr/lib/x86_64-linux-gnu/libsz.so /usr/lib/x86_64-linux-gnu/libz.so /usr/lib/x86_64-linux-gnu/libdl.a /usr/lib/x86_64-linux-gnu/libm.so Iconv::Iconv m pthread cudart_static dl rt nppc nppial nppicc nppidei nppif nppig nppim nppist nppisu nppitc npps cublas cudnn cufft -L/usr/local/cuda-11.8/lib64 -L/usr/lib/x86_64-linux-gnu 3rdparty dependencies: libprotobuf ade ittnotify libopenjp2 quirc OpenCV modules: To be built: aruco barcode bgsegm bioinspired calib3d ccalib core cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev datasets dnn dnn_objdetect dnn_superres dpm face features2d flann freetype fuzzy gapi hdf hfs highgui img_hash imgcodecs imgproc intensity_transform line_descriptor mcc ml objdetect optflow phase_unwrapping photo plot python3 quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts video videoio videostab wechat_qrcode xfeatures2d ximgproc xobjdetect xphoto Disabled: world Disabled by dependency: - Unavailable: alphamat cvv java julia matlab ovis python2 sfm viz Applications: tests perf_tests apps Documentation: NO Non-free algorithms: YES GUI: GTK3 GTK+: YES (ver 3.24.33) GThread : YES (ver 2.72.4) GtkGlExt: NO OpenGL support: NO VTK support: NO Media I/O: ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.11) JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver 80) WEBP: /usr/lib/x86_64-linux-gnu/libwebp.so (ver encoder: 0x020f) PNG: /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.6.37) TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 / 4.3.0) JPEG 2000: build (ver 2.4.0) OpenEXR: /usr/lib/x86_64-linux-gnu/libImath-2_5.so /usr/lib/x86_64-linux-gnu/libIlmImf-2_5.so /usr/lib/x86_64-linux-gnu/libIex-2_5.so /usr/lib/x86_64-linux-gnu/libHalf-2_5.so /usr/lib/x86_64-linux-gnu/libIlmThread-2_5.so (ver 2_5) HDR: YES SUNRASTER: YES PXM: YES PFM: YES Video I/O: DC1394: YES (2.2.6) FFMPEG: YES avcodec: YES (58.134.100) avformat: YES (58.76.100) avutil: YES (56.70.100) swscale: YES (5.9.100) avresample: NO GStreamer: YES (1.20.3) v4l/v4l2: YES (linux/videodev2.h) Parallel framework: TBB (ver 2021.5 interface 12050) Trace: YES (with Intel ITT) Other third-party libraries: VA: NO Lapack: NO Custom HAL: NO Protobuf: build (3.19.1) NVIDIA CUDA: YES (ver 11.8, CUFFT CUBLAS FAST_MATH) NVIDIA GPU arch: NVIDIA PTX archs: cuDNN: YES (ver 8.7.0) OpenCL: YES (no extra features) Include path: /home/v/Install/OpenCVRidge/opencv/3rdparty/include/opencl/1.2 Link libraries: Dynamic load Python 3: Interpreter: /usr/bin/python3 (ver 3.10.6) Libraries: /usr/lib/x86_64-linux-gnu/libpython3.10.so (ver 3.10.6) numpy: /usr/local/lib/python3.10/dist-packages/numpy/core/include (ver 1.24.1) install path: /usr/lib/python3/dist-packages/cv2/python-3.10 Python (for build): /usr/bin/python3 Java: ant: NO JNI: NO Java wrappers: NO Java tests: NO Install to: /usr/local ----------------------------------------------------------------- ``` so all what I wanted is ok - **CUDA, CUDNN, Gstreamer** My python also is seeing opencv - `import cv2` Here’s the problem tho, when I try to compile my cpp program - some video capture and Net detection (but it doesn’t seem to be related), I get a wall of **undefined referances** : I compile with this makefile ```auto cmake_minimum_required(VERSION 3.8) project(vision) set(CMAKE_CXX_STANDARD 17) set_target_properties(${TARGETS} PROPERTIES CUDA_RESOLVE_DEVICE_SYMBOLS ON) if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang") add_compile_options(-Wno-deprecated-enum-enum-conversion) endif() link_directories( /usr/local/lib /usr/local/cuda/lib64 /usr/local/lib/opencv4/3rdparty ) link_libraries( -latomic -lrt -lpthread -lstdc++fs -lcuda -lcudart -lopencv_core -lopencv_tracking -lopencv_videoio -lopencv_imgproc -lopencv_highgui -lopencv_ml -lopencv_video -lopencv_features2d -lopencv_calib3d -lopencv_objdetect -lopencv_flann -lopencv_dnn -lopencv_imgcodecs -lstdc++fs -lopencv_cudawarping -lopencv_cudev -lopencv_cudacodec ) # find dependencies find_package(ament_cmake REQUIRED) find_package(rclcpp REQUIRED) find_package(std_msgs REQUIRED) find_package(my_api REQUIRED) include_directories( src/core/ /usr/local/include/opencv4 /usr/include/opencv4 ) # include_directories(${HEADER}) file(GLOB SOURCES src/*.cpp src/core/*.cpp ) add_executable(vision ${SOURCES}) ament_target_dependencies(vision rclcpp std_msgs my_api) install(TARGETS vision DESTINATION lib/${PROJECT_NAME}) ament_package() ``` But when I try to compile I get this - [txt file](https://we.tl/t-jpsXZdM3qL) Thank you for your time, any help appreciated.