Hello,
I’m trying to compile the object_detection example inside the ai_sw_suite docker, but I get the error:
/local/workspace/Hailo-Application-Code-Examples/runtime/cpp/object_detection/utils/utils.hpp:36:10: fatal error: opencv2/highgui.hpp: No such file or directory
In debugging this, I noticed that on a first run of ./build.sh Cmake founds OpenCV at:
-- Found OpenCV: /usr/local (found version "4.5.2")
-- Found OpenCV: /usr/local/include/opencv4
however, looking inside /usr/local/include/opencv4 I see no opencv2 folder.
The full set of commands I used was:
# start a fresh docker container
sudo ./hailo_ai_sw_suite_docker_run.sh
# Instructions on repo
sudo apt-get install -y libopencv-dev python3-opencv
sudo apt-get install libboost-all-dev
git clone https://github.com/hailo-ai/Hailo-Application-Code-Examples.git
cd Hailo-Application-Code-Examples/runtime/cpp/object_detection
./download_resources.sh
./build.sh # <-- fatal error: opencv2/highgui.hpp: No such file or directory
dpkg -L libopencv-dev gives:
/.
/usr
/usr/bin
/usr/bin/opencv_annotation
/usr/bin/opencv_interactive-calibration
/usr/bin/opencv_model_diagnostics
/usr/bin/opencv_version
/usr/bin/opencv_visualisation
/usr/bin/opencv_waldboost_detector
/usr/lib
/usr/lib/x86_64-linux-gnu
/usr/lib/x86_64-linux-gnu/cmake
/usr/lib/x86_64-linux-gnu/cmake/opencv4
/usr/lib/x86_64-linux-gnu/cmake/opencv4/OpenCVConfig-version.cmake
/usr/lib/x86_64-linux-gnu/cmake/opencv4/OpenCVConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/opencv4/OpenCVModules-release.cmake
/usr/lib/x86_64-linux-gnu/cmake/opencv4/OpenCVModules.cmake
/usr/lib/x86_64-linux-gnu/pkgconfig
/usr/lib/x86_64-linux-gnu/pkgconfig/opencv4.pc
/usr/share
/usr/share/doc
/usr/share/doc/libopencv-dev
/usr/share/doc/libopencv-dev/copyright
/usr/share/licenses
/usr/share/licenses/opencv4
/usr/share/licenses/opencv4/SoftFloat-COPYING.txt
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/opencv_createsamples.1.gz
/usr/share/man/man1/opencv_haartraining.1.gz
/usr/share/man/man1/opencv_performance.1.gz
/usr/share/man/man1/opencv_traincascade.1.gz
/usr/share/doc/libopencv-dev/changelog.Debian.gz
Adding this to the CMakeFile.txt
message(STATUS "OpenCV include dirs: ${OpenCV_INCLUDE_DIRS}")
gives:
-- OpenCV include dirs: /usr/local/include/opencv4
which seems right, but running find / | grep highgui.hpp I found the file in
/usr/include/boost/compute/interop/opencv/highgui.hpp
/usr/include/opencv4/opencv2/highgui.hpp
/usr/include/opencv4/opencv2/highgui/highgui.hpp
so I did a cp -r /usr/include/opencv4/ /usr/local/include/ which solved the compilation erros, but now I get linking errors.
(hailo_virtualenv) hailo@ITBOL01LM7LC4:/local/workspace/Hailo-Application-Code-Examples/runtime/cpp/object_detection$ ./build.sh
-I- Building x86_64
-- Found OpenCV: /usr/local/include/opencv4
-- OpenCV version: 4.5.2
-- OpenCV libraries: opencv_calib3d;opencv_core;opencv_features2d;opencv_flann;opencv_imgcodecs;opencv_imgproc
-- OpenCV include dirs: /usr/local/include/opencv4
-- Configuring done
-- Generating done
-- Build files have been written to: /local/workspace/Hailo-Application-Code-Examples/runtime/cpp/object_detection/build/x86_64
[ 25%] Building CXX object CMakeFiles/obj_det.dir/object_detection.cpp.o
[ 50%] Building CXX object CMakeFiles/obj_det.dir/utils/async_inference.cpp.o
[ 75%] Building CXX object CMakeFiles/obj_det.dir/utils/utils.cpp.o
[100%] Linking CXX executable obj_det
/usr/bin/ld: CMakeFiles/obj_det.dir/utils/utils.cpp.o: warning: relocation against `_ZTVN2cv12VideoCaptureE' in read-only section `.text'
/usr/bin/ld: CMakeFiles/obj_det.dir/object_detection.cpp.o: in function `release_resources(cv::VideoCapture&, cv::VideoWriter&, InputType&)':
object_detection.cpp:(.text+0xf0): undefined reference to `cv::destroyAllWindows()'
/usr/bin/ld: CMakeFiles/obj_det.dir/object_detection.cpp.o: in function `run_post_process(InputType&, CommandLineArgs, int, int, unsigned long, cv::VideoCapture&, unsigned long, double)':
object_detection.cpp:(.text+0x1349): undefined reference to `cv::VideoWriter::VideoWriter()'
/usr/bin/ld: object_detection.cpp:(.text+0x14f2): undefined reference to `cv::VideoWriter::write(cv::_InputArray const&)'
/usr/bin/ld: object_detection.cpp:(.text+0x19a3): undefined reference to `cv::VideoWriter::~VideoWriter()'
/usr/bin/ld: CMakeFiles/obj_det.dir/object_detection.cpp.o: in function `run_post_process(InputType&, CommandLineArgs, int, int, unsigned long, cv::VideoCapture&, unsigned long, double) [clone .cold]':
object_detection.cpp:(.text.unlikely+0x2fd): undefined reference to `cv::VideoWriter::~VideoWriter()'
/usr/bin/ld: CMakeFiles/obj_det.dir/object_detection.cpp.o: in function `main.cold':
object_detection.cpp:(.text.unlikely+0x40e): undefined reference to `cv::VideoCapture::~VideoCapture()'
/usr/bin/ld: CMakeFiles/obj_det.dir/object_detection.cpp.o: in function `main':
object_detection.cpp:(.text.startup+0x24d): undefined reference to `cv::VideoCapture::VideoCapture()'
/usr/bin/ld: object_detection.cpp:(.text.startup+0x566): undefined reference to `cv::VideoCapture::~VideoCapture()'
/usr/bin/ld: CMakeFiles/obj_det.dir/utils/utils.cpp.o: in function `init_video_writer(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::VideoWriter&, double, int, int)':
utils.cpp:(.text+0x2134): undefined reference to `cv::VideoWriter::fourcc(char, char, char, char)'
/usr/bin/ld: CMakeFiles/obj_det.dir/utils/utils.cpp.o: in function `open_video_capture(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::VideoCapture, double&, double&, unsigned long&)':
utils.cpp:(.text+0x2e61): undefined reference to `cv::VideoCapture::open(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'
/usr/bin/ld: utils.cpp:(.text+0x2e69): undefined reference to `cv::VideoCapture::isOpened() const'
/usr/bin/ld: utils.cpp:(.text+0x2e7e): undefined reference to `cv::VideoCapture::get(int) const'
/usr/bin/ld: utils.cpp:(.text+0x2e90): undefined reference to `cv::VideoCapture::get(int) const'
/usr/bin/ld: utils.cpp:(.text+0x2ea3): undefined reference to `cv::VideoCapture::get(int) const'
/usr/bin/ld: utils.cpp:(.text+0x2ec1): undefined reference to `vtable for cv::VideoCapture'
/usr/bin/ld: CMakeFiles/obj_det.dir/utils/utils.cpp.o: in function `show_frame(InputType const&, cv::Mat const&)':
utils.cpp:(.text+0x2ff2): undefined reference to `cv::imshow(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&)'
/usr/bin/ld: utils.cpp:(.text+0x3014): undefined reference to `cv::waitKey(int)'
/usr/bin/ld: CMakeFiles/obj_det.dir/utils/utils.cpp.o: in function `determine_input_type(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::VideoCapture&, double&, double&, unsigned long&)':
utils.cpp:(.text+0x61d3): undefined reference to `vtable for cv::VideoCapture'
/usr/bin/ld: utils.cpp:(.text+0x630f): undefined reference to `cv::VideoCapture::~VideoCapture()'
/usr/bin/ld: utils.cpp:(.text+0x6317): undefined reference to `cv::VideoCapture::~VideoCapture()'
/usr/bin/ld: utils.cpp:(.text+0x6391): undefined reference to `vtable for cv::VideoCapture'
/usr/bin/ld: utils.cpp:(.text+0x64ca): undefined reference to `cv::VideoCapture::~VideoCapture()'
/usr/bin/ld: utils.cpp:(.text+0x64d2): undefined reference to `cv::VideoCapture::~VideoCapture()'
/usr/bin/ld: CMakeFiles/obj_det.dir/utils/utils.cpp.o: in function `determine_input_type(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::VideoCapture&, double&, double&, unsigned long&) [clone .cold]':
utils.cpp:(.text.unlikely+0x76d): undefined reference to `cv::VideoCapture::~VideoCapture()'
/usr/bin/ld: warning: creating DT_TEXTREL in a PIE
collect2: error: ld returned 1 exit status
gmake[2]: *** [CMakeFiles/obj_det.dir/build.make:136: obj_det] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/obj_det.dir/all] Error 2
gmake: *** [Makefile:91: all] Error 2
I’m confused, shouldn’t the docker file be ready to go?
What am I doing wrong?
Thank you.
Stefano