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I built opencv statically cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=~/Libs/opencv/static .. \ -DBUILD_SHARED_LIBS=OFF \ -DBUILD_LIST="highgui,imgproc,imgcodecs"

After linking with a test example, I get the following errors

opencl_core.cpp:-1: error : undefined reference to `dlopen'
opencl_core.cpp:-1: error : undefined reference to `dlsym'
opencv/static/lib/libopencv_core.a(persistence.cpp.o):-1: In function `cv::FileStorage::Impl::release(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*)':
file not found persistence.cpp:-1: erreur : undefined reference to `gzclose':

And many other similar undefined references, I do not use opencl at all, my example code is the following

#include <opencv4/opencv2/core.hpp>
#include <opencv4/opencv2/highgui.hpp>
#include <opencv4/opencv2/imgcodecs.hpp>
#include <opencv4/opencv2/imgproc.hpp>

int main(int argc, char **argv) {
  if (argc != 2) {
    std::cout << "usage: DisplayImage.out <Image_Path>\n" << std::endl;
    return -1;
  }

  cv::Mat image = cv::imread(std::string{argv[1]});
  if (!image.data) {
      printf("No image data \n");
      return -1;
  }

  cv::rectangle(image, cv::Point(0, 0), cv::Point(112, 112),
                cv::Scalar(0, 255, 0), 10, cv::LINE_4);
  cv::putText(image, "Opencv", cv::Point(0, 112),
              cv::FONT_HERSHEY_COMPLEX_SMALL, 0.8, cv::Scalar(255, 0, 225));
  cv::imshow("Opencv 4", image);
  cv::waitKey(0);
  return 0;
}

I built opencv statically cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=~/Libs/opencv/static .. \ -DBUILD_SHARED_LIBS=OFF \ -DBUILD_LIST="highgui,imgproc,imgcodecs"

After linking with a test example, I get the following errors

opencl_core.cpp:-1: error : undefined reference to `dlopen'
opencl_core.cpp:-1: error : undefined reference to `dlsym'
opencv/static/lib/libopencv_core.a(persistence.cpp.o):-1: In function `cv::FileStorage::Impl::release(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*)':
file not found persistence.cpp:-1: erreur : undefined reference to `gzclose':

And many other similar undefined references, I do not use opencl at all, my example code is the following

#include <opencv4/opencv2/core.hpp>
#include <opencv4/opencv2/highgui.hpp>
#include <opencv4/opencv2/imgcodecs.hpp>
#include <opencv4/opencv2/imgproc.hpp>
<opencv2/core.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/imgproc.hpp>

int main(int argc, char **argv) {
  if (argc != 2) {
    std::cout << "usage: DisplayImage.out <Image_Path>\n" << std::endl;
    return -1;
  }

  cv::Mat image = cv::imread(std::string{argv[1]});
  if (!image.data) {
      printf("No image data \n");
      return -1;
  }

  cv::rectangle(image, cv::Point(0, 0), cv::Point(112, 112),
                cv::Scalar(0, 255, 0), 10, cv::LINE_4);
  cv::putText(image, "Opencv", cv::Point(0, 112),
              cv::FONT_HERSHEY_COMPLEX_SMALL, 0.8, cv::Scalar(255, 0, 225));
  cv::imshow("Opencv 4", image);
  cv::waitKey(0);
  return 0;
}

I built opencv statically cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=~/Libs/opencv/static .. \ -DBUILD_SHARED_LIBS=OFF \ -DBUILD_LIST="highgui,imgproc,imgcodecs"

After linking with a test example, I get the following errors

opencl_core.cpp:-1: error : undefined reference to `dlopen'
opencl_core.cpp:-1: error : undefined reference to `dlsym'
opencv/static/lib/libopencv_core.a(persistence.cpp.o):-1: In function `cv::FileStorage::Impl::release(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*)':
file not found persistence.cpp:-1: erreur error : undefined reference to `gzclose':

And many other similar undefined references, I do not use opencl at all, my example code is the following

#include <opencv2/core.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/imgproc.hpp>

int main(int argc, char **argv) {
  if (argc != 2) {
    std::cout << "usage: DisplayImage.out <Image_Path>\n" << std::endl;
    return -1;
  }

  cv::Mat image = cv::imread(std::string{argv[1]});
  if (!image.data) {
      printf("No image data \n");
      return -1;
  }

  cv::rectangle(image, cv::Point(0, 0), cv::Point(112, 112),
                cv::Scalar(0, 255, 0), 10, cv::LINE_4);
  cv::putText(image, "Opencv", cv::Point(0, 112),
              cv::FONT_HERSHEY_COMPLEX_SMALL, 0.8, cv::Scalar(255, 0, 225));
  cv::imshow("Opencv 4", image);
  cv::waitKey(0);
  return 0;
}