Install opencv on hifive unleashed board

HiFive Unleashed
1

Is there anyone who install opencv on hifive unleashed board???

I use fedora for operating system and i want to use opencv in C++.

Therefore i tried to install opencv with dnf command, but, it didn’t work.

Detailed command and errors are like below

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2

Last metadata expiration check: 0:14:57 ago on Tue 07 Jul 2020 06:25:13 AM EDT.
Error:
Problem: package opencv-3.4.1-6.fc29.riscv64 requires libopencv_core.so.3.4()(64bit), but none of the providers can be installed

  • package opencv-3.4.1-6.fc29.riscv64 requires libopencv_imgproc.so.3.4()(64bit), but none of the providers can be installed
  • package opencv-3.4.1-6.fc29.riscv64 requires libopencv_videoio.so.3.4()(64bit), but none of the providers can be installed
  • package opencv-3.4.1-6.fc29.riscv64 requires libopencv_imgcodecs.so.3.4()(64bit), but none of the providers can be installed
  • package opencv-3.4.1-6.fc29.riscv64 requires libopencv_features2d.so.3.4()(64bit), but none of the providers can be installed
  • package opencv-3.4.1-6.fc29.riscv64 requires libopencv_highgui.so.3.4()(64bit), but none of the providers can be installed
  • package opencv-3.4.1-6.fc29.riscv64 requires opencv-core(riscv-64) = 3.4.1-6.fc29, but none of the providers can be installed
  • conflicting requests
  • nothing provides libIlmImf-2_2.so.22()(64bit) needed by opencv-core-3.4.1-6.fc29.riscv64
    (try to add ‘–skip-broken’ to skip uninstallable packages)
3

Hi Seunghyun,

We Used linux on Hifive-Unleashed-U540 board. Built natively with no error and we got libraries.

Follow below instructions to build opencv natively on u540.

Installing OpenCV from the Source

step1:

  install the required dependencies:

build-essential cmake git pkg-config libgtk-3-dev libavcodec-dev libavformat-dev libswscale-dev libv4l-dev libxvidcore-dev libx264-dev libjpeg-dev libpng-dev libtiff-dev  gfortran openexr libatlas-base-dev python3-dev python3-numpy ibtbb2 libtbb-dev libdc1394-22-dev

step2:

  Clone the OpenCV’s and OpenCV contrib repositories:

 $mkdir ~/opencv_build && cd ~/opencv_build

 $git clone https://github.com/opencv/opencv.git

 $git clone https://github.com/opencv/opencv_contrib.git

 $cd opencv

 $git checkout 3.4

 $cd ../opencv_contrib

 $git checkout 3.4

step3:

 $cd ~/opencv_build/opencv

 $mkdir build && cd build

Set up the OpenCV build with CMake:

 $cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -DPYTHON_DEFAULT_EXECUTABLE=/usr/bin/python3 -D OPENCV_GENERATE_PKGCONFIG=ON -D OPENCV_EXTRA_MODULES_PATH=~/opencv_build/opencv_contrib/modules -D BUILD_EXAMPLES=ON ..

step4:
$make -j8
step5:
$sudo make install