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<1>错误现象 cmake … 时发生报错
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
opencv_dep_CUDA_nppi_LIBRARY
linked by target "opencv_core" in directory /home/bruce/software/opencv-2.4.13.6/modules/core
linked by target "opencv_core" in directory /home/bruce/software/opencv-2.4.13.6/modules/core
linked by target "opencv_core" in directory /home/bruce/software/opencv-2.4.13.6/modules/core
linked by target "opencv_test_core" in directory /home/bruce/software/opencv-2.4.13.6/modules/core
<2>解决办法
打开cmake-gui，去掉对cuda的选项
<3>报错现象 在make -j4时发生报错
[100%] Building CXX object modules/contrib/CMakeFiles/opencv_contrib.dir/src/selfsimilarity.cpp.o
/home/bruce/software/opencv-2.4.13.6/modules/contrib/src/rgbdodometry.cpp:65:47: fatal error: unsupported/Eigen/MatrixFunctions: 没有那个文件或目录
compilation terminated.
modules/contrib/CMakeFiles/opencv_contrib.dir/build.make:710: recipe for target 'modules/contrib/CMakeFiles/opencv_contrib.dir/src/rgbdodometry.cpp.o' failed
make[2]: *** [modules/contrib/CMakeFiles/opencv_contrib.dir/src/rgbdodometry.cpp.o] Error 1
make[2]: *** 正在等待未完成的任务....
[100%] Linking CXX executable ../../bin/opencv_test_stitching
CMakeFiles/Makefile2:5876: recipe for target 'modules/contrib/CMakeFiles/opencv_contrib.dir/all' failed
make[1]: *** [modules/contrib/CMakeFiles/opencv_contrib.dir/all] Error 2
make[1]: *** 正在等待未完成的任务....
[100%] Built target opencv_test_stitching
[100%] Linking CXX executable ../../bin/opencv_perf_stitching
[100%] Built target opencv_perf_stitching
Makefile:162: recipe for target 'all' failed
make: *** [all] Error 2
<4>解决办法
根据错误提示/home/bruce/software/opencv-2.4.13.6/modules/contrib/src/rgbdodometry.cpp
找到该cpp文件，进行修改。
把# include <unsupported/Eigen/MatrixFunctions>
替换为把eigen3安装库的路径加进去，如下：
# include </usr/local/include/eigen3/unsupported/Eigen/MatrixFunctions>