１.系统中已经提前安装过cuda和cudnn等，直接按照以下命令配置即可：
依赖安装：
sudo apt-get install cmake
sudo apt-get install build-essential libgtk2.0-dev libavcodec-dev libavformat-dev libjpeg.dev libtiff4.dev libswscale-dev libjasper-dev cd opencv-4.1.0
mkdir build
cd buildcmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local/opencv4.1.0 -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib-4.1.0/modules -D WITH_CUDA=ON -D WITH_CUBLAS=1 -D CUDA_ARCH_BIN="6.1" -D CUDA_ARCH_PTX="6.1" -D INSTALL_C_EXAMPLES=OFF -D INSTALL_PYTHON_EXAMPLES=ON -D WITH_OPENGL=ON -D WITH_V4L=ON WITH_NVCUVID=ON -D -DBUILD_TIFF=ON ..注意,opencv-contrib模块版本要与opencv版本匹配。
问题1：
age-6.2.so.6.2: undefined reference to `TIFFReadDirectory@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFGetFieldDefaulted@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFNumberOfDirectories@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFIsTiled@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFOpen@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFDefaultStripSize@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFReadRGBAImage@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFReadTile@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFSetField@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFWriteScanline@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `_TIFFfree@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFGetField@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFScanlineSize@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFSetWarningHandler@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFTileSize@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `_TIFFmalloc@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFSetErrorHandler@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFSetDirectory@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFReadScanline@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFClose@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFNumberOfTiles@LIBTIFF_4.0'
//usr/lib/x86_64-linux-gnu/libvtkIOImage-6.2.so.6.2: undefined reference to `TIFFClientOpen@LIBTIFF_4.0
--------------------- 解决方法是：重新安装libtiff.
sudo apt-get remove libtiff5-devsudo apt-get install libtiff5-dev问题２：
fatal error: unsupported/Eigen/MatrixFunctions: 没有那个文件或目录解决方法：
sudo apt-get install libeigen3-dev //默认安装路径是：/usr/include/eigen3sudo cp -r usr/include/eigen3/unsported usr/local/include/问题3:
fatal error: opencv2/viz/widgets.hpp: 没有那个文件或目录解决方法：opencv-4.1.0目录下
python ./modules/python/src2/gen2.py ./build/modules/python_bindings_generator ./build/modules/python_bindings_generator/headers.txt