Ubuntu安装 opencv 3.4.1 遇到的问题
这里说一下make阶段遇到的问题，前排感谢大佬们的智慧。
1.找不到包。
OpenCV3.3编译安装+部分问题解决 - 灰信网（软件开发博客聚合）
缺少的包 解决方法
-- No package 'gtk+-3.0' found sudo apt-get install libgtk-3-dev
-- No package 'gstreamer-base-1.0' found sudo apt-get -y install libgstreamer-plugins-base1.0-dev
-- No package 'gstreamer-video-1.0' found
-- No package 'gstreamer-app-1.0' found
-- No package 'gstreamer-riff-1.0' found （这四个装下面这个包）
-- No package 'gstreamer-pbutils-1.0' found sudo apt-get -y install libgstreamer1.0-dev
-- No package 'libavresample' found sudo apt-get -y install libavresample-dev
-- No package 'libgphoto2' found sudo apt-get -y install libgphoto2-dev
缺少库
-- Could not find OpenBLAS include. Turning OpenBLAS_FOUND off
-- Could not find OpenBLAS lib. Turning OpenBLAS_FOUND off
-- Could NOT find Atlas (missing: Atlas_CBLAS_INCLUDE_DIR Atlas_CLAPACK_INCLUDE_DIR Atlas_CBLAS_LIBRARY Atlas_BLAS_LIBRARY Atlas_LAPACK_LIBRARY)
-- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE)
-- Could NOT find JNI (missing: JAVA_AWT_LIBRARY JAVA_JVM_LIBRARY JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH)
-- Could NOT find Matlab (missing: MATLAB_MEX_SCRIPT MATLAB_INCLUDE_DIRS MATLAB_ROOT_DIR MATLAB_LIBRARIES MATLAB_LIBRARY_DIRS MATLAB_MEXEXT MATLAB_ARCH MATLAB_BIN)
-- VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file
解决：JNI和MATLAB我没有管，最后还是报没有。
sudo apt-get install libopenblas-dev
2.cmake报错
The fllowing variables are used in this project,but they are set to notfound:
CUDA_nppicom_LIBRARY(ADVANCED)
linked by ...
Opencv 4.3（CUDA11 ） 编译踩坑记录 - Geoffrey_one - 博客园
解决：在cmake 后面加
-D CUDA_nppicom_LIBRARY=stdc++ 3.找不到文件
fatal error: dynlink_nvcuvid.h: 没有那个文件或目录
#include
解决“fatal error: dynlink_nvcuvid.h: 没有那个文件或目录#include ＜dynlink_nvcuvid.h＞“问题_Sherwin He的博客-CSDN博客
解决：在cmake 后加
-D WITH_CUDA=OFF ..
由此，完整的cmake：
cmake -D CUDA_nppicom_LIBRARY=stdc++ -D WITH_CUDA=OFF ..
4.Unsupported gpu architecture 'compute_30'
据说是cuda11放弃了30，我的做法就是在报错的文件，删掉30这一行。删掉后如下图所示。这个需要多运行几遍，看看有哪些文件报这个错误。
set(CUDA_NVCC_FLAGS -gencode;arch=compute_35,code=sm_35;-gencode;arch=compute_37,code=sm_37;-gencode;arch=compute_50,code=sm_50;-gencode;arch=compute_52,code=sm_52;-gencode;arch=compute_60,code=sm_60;-gencode;arch=compute_61,code=sm_61;-gencode;arch=compute_70,code=sm_70;