如何在Travis CI上安装OpenCV 4？

Question

我尝试使用Travis CI为我使用OpenCV 4.0的程序构建和运行测试。

我在我的install .travis.yml文件部分尝试了一下：

install:
  - sudo apt-get install -qq g++-7
  - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-7 90

  # OpenCV dependencies - Details available at: http://docs.opencv.org/trunk/doc/tutorials/introduction/linux_install/linux_install.html
  - sudo apt-get install -y build-essential
  - sudo apt-get install -y cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
  - sudo apt-get install -y python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

  - git clone https://github.com/opencv/opencv.git
  - git clone https://github.com/opencv/opencv_contrib.git
  - cd opencv

  # Create a new 'build' folder.
  - mkdir build
  - cd build

  # Set build instructions for Ubuntu distro.
  - cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_OPENGL=ON ..

  # Run 'make' with four threads.
  - make -j4

  # Install to OS.
  - sudo make install

  # Add configuration to OpenCV to tell it where the library files are located on the file system (/usr/local/lib)
  - sudo sh -c 'echo "/usr/local/lib" > /etc/ld.so.conf.d/opencv.conf'

  - sudo ldconfig
  - echo "OpenCV installed."

但它给了我68%的make超时错误：The job exceeded the maximum time limit for jobs, and has been terminated.

有没有更好的方法在Travis CI上安装OpenCV？

也许是一些内置的机制？

或者是否有某种方法可以禁用此超时保护？

Answer 1

禁用BUILD_EXAMPLES、BUILD_TESTS和BUILD_PERF_TESTS

Answer 2

最后，我使用以下命令在Travis CI上构建OpenCV而没有超时：

cmake -D CMAKE_BUILD_TYPE=RELEASE -D BUILD_EXAMPLES=OFF -D BUILD_opencv_apps=OFF -D BUILD_DOCS=OFF -D BUILD_PERF_TESTS=OFF -D BUILD_TESTS=OFF -D CMAKE_INSTALL_PREFIX=/usr/local ..