2 installed open cv and g++ compile error

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

I wrote a cpp code and I want to compile it in my Desktop directory with g++ I have opencv library errors like:

g++ camcalib.cpp -O3 -l/usr/local/include/opencv4** -lopencv_imgproc -lopencv_highgui -lopencv_calib3d 
camcalib.cpp:1:10: fatal error: opencv2/opencv.hpp: No such file or directory
 #include <opencv2/opencv.hpp>
          ^~~~~~~~~~~~~~~~~~~~
compilation terminated.

I searched about in forum and I got some outputs:

pkg-config opencv4 --libs --cflags
-I/usr/local/include/opencv4 -L/usr/local/lib -lopencv_gapi -lopencv_stitching -lopencv_alphamat -lopencv_aruco -lopencv_bgsegm -lopencv_bioinspired -lopencv_ccalib -lopencv_cudabgsegm -lopencv_cudafeatures2d -lopencv_cudaobjdetect -lopencv_cudastereo -lopencv_dnn_objdetect -lopencv_dnn_superres -lopencv_dpm -lopencv_highgui -lopencv_face -lopencv_freetype -lopencv_fuzzy -lopencv_hfs -lopencv_img_hash -lopencv_intensity_transform -lopencv_line_descriptor -lopencv_quality -lopencv_rapid -lopencv_reg -lopencv_rgbd -lopencv_saliency -lopencv_stereo -lopencv_structured_light -lopencv_phase_unwrapping -lopencv_superres -lopencv_cudacodec -lopencv_surface_matching -lopencv_tracking -lopencv_datasets -lopencv_text -lopencv_dnn -lopencv_plot -lopencv_videostab -lopencv_cudaoptflow -lopencv_optflow -lopencv_cudalegacy -lopencv_videoio -lopencv_cudawarping -lopencv_xfeatures2d -lopencv_shape -lopencv_ml -lopencv_ximgproc -lopencv_video -lopencv_xobjdetect -lopencv_objdetect -lopencv_calib3d -lopencv_imgcodecs -lopencv_features2d -lopencv_flann -lopencv_xphoto -lopencv_photo -lopencv_cudaimgproc -lopencv_cudafilters -lopencv_imgproc -lopencv_cudaarithm -lopencv_core -lopencv_cudev

then,

dpkg -l | grep opencv
ii  libopencv                                  4.1.1-2-gd5a58aa75                         arm64        Open Computer Vision Library
ii  libopencv-calib3d3.2:arm64                 3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision Camera Calibration library
ii  libopencv-contrib3.2:arm64                 3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision contrlib library
ii  libopencv-core3.2:arm64                    3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision core library
ii  libopencv-dev                              4.1.1-2-gd5a58aa75                         arm64        Development files for Open Source Computer Vision Library
ii  libopencv-features2d3.2:arm64              3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision Feature Detection and Descriptor Extraction library
ii  libopencv-flann3.2:arm64                   3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision Clustering and Search in Multi-Dimensional spaces library
ii  libopencv-highgui3.2:arm64                 3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision High-level GUI and Media I/O library
ii  libopencv-imgcodecs3.2:arm64               3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision Image Codecs library
ii  libopencv-imgproc3.2:arm64                 3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision Image Processing library
ii  libopencv-ml3.2:arm64                      3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision Machine Learning library
ii  libopencv-objdetect3.2:arm64               3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision Object Detection library
ii  libopencv-photo3.2:arm64                   3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision computational photography library
ii  libopencv-shape3.2:arm64                   3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision shape descriptors and matchers library
ii  libopencv-stitching3.2:arm64               3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision image stitching library
ii  libopencv-superres3.2:arm64                3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision Super Resolution library
ii  libopencv-video3.2:arm64                   3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision Video analysis library
ii  libopencv-videoio3.2:arm64                 3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision Video I/O library
ii  libopencv-videostab3.2:arm64               3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision video stabilization library
ii  libopencv-viz3.2:arm64                     3.2.0+dfsg-4ubuntu0.1                      arm64        computer vision 3D data visualization library
ii  python-opencv                              3.2.0+dfsg-4ubuntu0.1                      arm64        Python bindings for the computer vision library
ii  python3-opencv                             3.2.0+dfsg-4ubuntu0.1                      arm64        Python 3 bindings for the computer vision library

I got the info also:

>>> print(cv2.getBuildInformation())

General configuration for OpenCV 4.4.0 =====================================
  Version control:               4.4.0

  Extra modules:
    Location (extra):            /tmp/build_opencv/opencv_contrib/modules
    Version control (extra):     4.4.0

  Platform:
    Timestamp:                   2022-04-04T06:39:52Z
    Host:                        Linux 4.9.253-tegra aarch64
    CMake:                       3.10.2
    CMake generator:             Unix Makefiles
    CMake build tool:            /usr/bin/make
    Configuration:               RELEASE

  CPU/HW features:
    Baseline:                    NEON FP16
      required:                  NEON
      disabled:                  VFPV3

  C/C++:
    Built as dynamic libs?:      YES
    C++ standard:                11
    C++ Compiler:                /usr/bin/c++  (ver 7.5.0)
    C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
    C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
    C Compiler:                  /usr/bin/cc
    C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
    C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
    Linker flags (Release):      -Wl,--gc-sections -Wl,--as-needed  
    Linker flags (Debug):        -Wl,--gc-sections -Wl,--as-needed  
    ccache:                      NO
    Precompiled headers:         NO
    Extra dependencies:          m pthread cudart_static -lpthread dl rt nppc nppial nppicc nppicom nppidei nppif nppig nppim nppist nppisu nppitc npps cublas cudnn cufft -L/usr/local/cuda/lib64 -L/usr/lib/aarch64-linux-gnu
    3rdparty dependencies:

  OpenCV modules:
    To be built:                 alphamat aruco 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 hfs highgui img_hash imgcodecs imgproc intensity_transform line_descriptor ml objdetect optflow phase_unwrapping photo plot python2 python3 quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking video videoio videostab xfeatures2d ximgproc xobjdetect xphoto
    Disabled:                    world
    Disabled by dependency:      -
    Unavailable:                 cnn_3dobj cvv hdf java js julia matlab ovis sfm ts viz
    Applications:                apps
    Documentation:               NO
    Non-free algorithms:         YES

  GUI: 
    GTK+:                        YES (ver 3.22.30)
      GThread :                  YES (ver 2.56.4)
      GtkGlExt:                  NO
    OpenGL support:              NO
    VTK support:                 NO

  Media I/O: 
    ZLib:                        /usr/lib/aarch64-linux-gnu/libz.so (ver 1.2.11)
    JPEG:                        /usr/lib/aarch64-linux-gnu/libjpeg.so (ver 80)
    WEBP:                        build (ver encoder: 0x020f)
    PNG:                         /usr/lib/aarch64-linux-gnu/libpng.so (ver 1.6.34)
    TIFF:                        /usr/lib/aarch64-linux-gnu/libtiff.so (ver 42 / 4.0.9)
    JPEG 2000:                   build Jasper (ver 1.900.1)
    OpenEXR:                     /usr/lib/aarch64-linux-gnu/libImath.so /usr/lib/aarch64-linux-gnu/libIlmImf.so /usr/lib/aarch64-linux-gnu/libIex.so /usr/lib/aarch64-linux-gnu/libHalf.so /usr/lib/aarch64-linux-gnu/libIlmThread.so (ver 2_2)
    HDR:                         YES
    SUNRASTER:                   YES
    PXM:                         YES
    PFM:                         YES

  Video I/O:
    DC1394:                      YES (2.2.5)
    FFMPEG:                      YES
      avcodec:                   YES (57.107.100)
      avformat:                  YES (57.83.100)
      avutil:                    YES (55.78.100)
      swscale:                   YES (4.8.100)
      avresample:                YES (3.7.0)
    GStreamer:                   YES (1.14.5)
    v4l/v4l2:                    YES (linux/videodev2.h)

  Parallel framework:            pthreads

  Trace:                         YES (with Intel ITT)

  Other third-party libraries:
    Lapack:                      YES (/usr/lib/aarch64-linux-gnu/liblapack.so /usr/lib/aarch64-linux-gnu/libcblas.so /usr/lib/aarch64-linux-gnu/libatlas.so)
    Eigen:                       YES (ver 3.3.4)
    Custom HAL:                  YES (carotene (ver 0.0.1))
    Protobuf:                    build (3.5.1)

  NVIDIA CUDA:                   YES (ver 10.2, CUFFT CUBLAS FAST_MATH)
    NVIDIA GPU arch:             53 62 72
    NVIDIA PTX archs:

  cuDNN:                         YES (ver 8.0)

  OpenCL:                        YES (no extra features)
    Include path:                /tmp/build_opencv/opencv/3rdparty/include/opencl/1.2
    Link libraries:              Dynamic load

  Python 2:
    Interpreter:                 /usr/bin/python2.7 (ver 2.7.17)
    Libraries:                   /usr/lib/aarch64-linux-gnu/libpython2.7.so (ver 2.7.17)
    numpy:                       /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.13.3)
    install path:                lib/python2.7/dist-packages/cv2/python-2.7

  Python 3:
    Interpreter:                 /usr/bin/python3 (ver 3.6.9)
    Libraries:                   /usr/lib/aarch64-linux-gnu/libpython3.6m.so (ver 3.6.9)
    numpy:                       /usr/lib/python3/dist-packages/numpy/core/include (ver 1.13.3)
    install path:                lib/python3.6/dist-packages/cv2/python-3.6

  Python (for build):            /usr/bin/python2.7

  Java:                          
    ant:                         NO
    JNI:                         NO
    Java wrappers:               NO
    Java tests:                  NO

  Install to:                    /usr/local
-----------------------------------------------------------------

it seems I have two different version of opencv , in the begining I downgraded my opencv version from opencv.4sth
to opencv3.2 but I upgraded again using this repo in github, I have still g++ issue that I mentioned aboveI recognized that I have to use opencv3 n-because ROS Melodic supports opencv3, how can Isolve my g++ issue. Could you helpme with that issue?

3

Hi,
We have OpenCV samples in
L4T Driver Package (BSP) Sources

Please check if you can compile the samples. If not we woudl suggest re-install the system image and SDK components to usedefault 4.1.1.

5

I install and go to file that I extraxted opencv folder and run like :

~/opencvgpp/opencv-sample-apps/opencv_camera$ g++ opencv_gst_camera.cpp -o opencv_gs_camera_cpp
/tmp/cc7xdTKv.o: In function `main':
opencv_gst_camera.cpp:(.text+0x238): undefined reference to `cv::VideoCapture::VideoCapture()'
opencv_gst_camera.cpp:(.text+0x290): undefined reference to `cv::CommandLineParser::CommandLineParser(int, char const* const*, cv::String const&)'
opencv_gst_camera.cpp:(.text+0x2b4): undefined reference to `cv::CommandLineParser::has(cv::String const&) const'
opencv_gst_camera.cpp:(.text+0x35c): undefined reference to `cv::CommandLineParser::check() const'
opencv_gst_camera.cpp:(.text+0x378): undefined reference to `cv::CommandLineParser::printErrors() const'
opencv_gst_camera.cpp:(.text+0x3c0): undefined reference to `cv::VideoCapture::open(cv::String const&, int)'
opencv_gst_camera.cpp:(.text+0x3d8): undefined reference to `cv::VideoCapture::isOpened() const'
opencv_gst_camera.cpp:(.text+0x430): undefined reference to `cv::VideoCapture::operator>>(cv::Mat&)'
opencv_gst_camera.cpp:(.text+0x434): undefined reference to `cv::VideoCapture::operator>>(cv::Mat&)'
opencv_gst_camera.cpp:(.text+0x468): undefined reference to `cv::imshow(cv::String const&, cv::_InputArray const&)'
opencv_gst_camera.cpp:(.text+0x480): undefined reference to `cv::waitKey(int)'
opencv_gst_camera.cpp:(.text+0x54c): undefined reference to `cv::VideoCapture::release()'
opencv_gst_camera.cpp:(.text+0x558): undefined reference to `cv::CommandLineParser::~CommandLineParser()'
opencv_gst_camera.cpp:(.text+0x570): undefined reference to `cv::VideoCapture::~VideoCapture()'
opencv_gst_camera.cpp:(.text+0x638): undefined reference to `cv::CommandLineParser::~CommandLineParser()'
opencv_gst_camera.cpp:(.text+0x658): undefined reference to `cv::VideoCapture::~VideoCapture()'
/tmp/cc7xdTKv.o: In function `cv::String::String(char const*)':
opencv_gst_camera.cpp:(.text._ZN2cv6StringC2EPKc[_ZN2cv6StringC5EPKc]+0x40): undefined reference to `cv::String::allocate(unsigned long)'
/tmp/cc7xdTKv.o: In function `cv::String::~String()':
opencv_gst_camera.cpp:(.text._ZN2cv6StringD2Ev[_ZN2cv6StringD5Ev]+0x10): undefined reference to `cv::String::deallocate()'
/tmp/cc7xdTKv.o: In function `cv::Mat::~Mat()':
opencv_gst_camera.cpp:(.text._ZN2cv3MatD2Ev[_ZN2cv3MatD5Ev]+0x34): undefined reference to `cv::fastFree(void*)'
/tmp/cc7xdTKv.o: In function `cv::Mat::release()':
opencv_gst_camera.cpp:(.text._ZN2cv3Mat7releaseEv[_ZN2cv3Mat7releaseEv]+0x58): undefined reference to `cv::Mat::deallocate()'
/tmp/cc7xdTKv.o: In function `cv::String::String(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
opencv_gst_camera.cpp:(.text._ZN2cv6StringC2ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE[_ZN2cv6StringC5ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE]+0x54): undefined reference to `cv::String::allocate(unsigned long)'
/tmp/cc7xdTKv.o: In function `cv::TickMeter::start()':
opencv_gst_camera.cpp:(.text._ZN2cv9TickMeter5startEv[_ZN2cv9TickMeter5startEv]+0xc): undefined reference to `cv::getTickCount()'
/tmp/cc7xdTKv.o: In function `cv::TickMeter::stop()':
opencv_gst_camera.cpp:(.text._ZN2cv9TickMeter4stopEv[_ZN2cv9TickMeter4stopEv]+0xc): undefined reference to `cv::getTickCount()'
/tmp/cc7xdTKv.o: In function `cv::TickMeter::getTimeSec() const':
opencv_gst_camera.cpp:(.text._ZNK2cv9TickMeter10getTimeSecEv[_ZNK2cv9TickMeter10getTimeSecEv]+0x1c): undefined reference to `cv::getTickFrequency()'
/tmp/cc7xdTKv.o: In function `unsigned int cv::CommandLineParser::get<unsigned int>(cv::String const&, bool) const':
opencv_gst_camera.cpp:(.text._ZNK2cv17CommandLineParser3getIjEET_RKNS_6StringEb[_ZNK2cv17CommandLineParser3getIjEET_RKNS_6StringEb]+0x44): undefined reference to `cv::CommandLineParser::getByName(cv::String const&, bool, int, void*) const'
/tmp/cc7xdTKv.o: In function `int cv::CommandLineParser::get<int>(cv::String const&, bool) const':
opencv_gst_camera.cpp:(.text._ZNK2cv17CommandLineParser3getIiEET_RKNS_6StringEb[_ZNK2cv17CommandLineParser3getIiEET_RKNS_6StringEb]+0x44): undefined reference to `cv::CommandLineParser::getByName(cv::String const&, bool, int, void*) const'
collect2: error: ld returned 1 exit status

Why is it happening I didn’t get it.
Do I have to do sth with MakeFile?

7

Hi,
Are you able to build on Jetson Nano? The Makefile is for building the samples on Jetson platforms.

9

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