Ubuntu18.04系统下Opencv2.4.11安装CMAKE错误记录
错误显示一个三个库没找到
1、
fatal error: linux/videodev.h: 没有那个文件或目录
#include
^~~~~~~~~~~~~~~~~~
compilation terminated.
解决方法：
安装libv4l-dev库
sudo apt-get install libv4l-dev建立软映射连接
sudo ln -s /usr/include/libv4l1-videodev.h /usr/include/linux/videodev.h2、
fatal error: sys/videoio.h: 没有那个文件或目录
#include
^~~~~~~~~~~~~~~
compilation terminated.
这个不用管，不影响使用，参考：
https://blog.csdn.net/zhe_csdn/article/details/88679807
https://blog.csdn.net/Qin605/article/details/86609070
https://blog.csdn.net/xbs150/article/details/77840786#%E4%BE%8B1%E7%BC%BA%E5%B0%91videodevhlinuxvideodevh-not-found
解决方法：
让系统找到videoio.h即可
sudo mkdir /usr/include/sys/ #新建文件夹
sudo cp /usr/local/include/opencv2/videoio/videoio_c.h /usr/include/sys/
sudo ln -s /usr/include/sys/videoio_c.h /usr/include/sys/videoio.h3、
fatal error: ffmpeg/avformat.h: 没有那个文件或目录
#include
^~~~~~~~~~~~~~~~~~~
compilation terminated.
这个错误是因为缺乏ffmpeg的库
解决方法：
安装ffmpeg
sudo apt install ffmpeg建立文件夹，和软连接
sudo mkdir /usr/include/ffmpeg
sudo ln -s /usr/include/x86_64-linux-gnu/libavformat/avformat.h /usr/include/ffmpeg/avformat.h
sudo ln -s /usr/include/x86_64-linux-gnu/libavformat/avio.h /usr/include/ffmpeg/avio.h4、CUDA问题
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_test_core" in directory /home/ubuntu/Mydata/opencv-2.4.11/modules/core
linked by target "opencv_test_core" in directory /home/ubuntu/Mydata/opencv-2.4.11/modules/core
linked by target "opencv_core" in directory /home/ubuntu/Mydata/opencv-2.4.11/modules/core
linked by target "opencv_core" in directory /home/ubuntu/Mydata/opencv-2.4.11/modules/core
linked by target "opencv_perf_core" in directory /home/ubuntu/Mydata/opencv-2.4.11/modules/core
.......
解决方法：https://blog.csdn.net/qq_15505637/article/details/79622968
5、Ubuntu 18.4不支持opencv-2.4.11自带的OpenCVDetectCXXCompiler.cmake
CMake Error at cmake/OpenCVDetectCXXCompiler.cmake:85 (list):
list GET given empty list
Call Stack (most recent call first):
CMakeLists.txt:89 (include)
CMake Error at cmake/OpenCVDetectCXXCompiler.cmake:86 (list):
list GET given empty list
Call Stack (most recent call first):
CMakeLists.txt:89 (include)
CMake Error at cmake/OpenCVDetectCXXCompiler.cmake:89 (math):
math cannot parse the expression: "*100 + ": syntax error, unexpected
exp_TIMES, expecting exp_PLUS or exp_MINUS or exp_OPENPARENT or exp_NUMBER
(1)
Call Stack (most recent call first):
CMakeLists.txt:89 (include)
解决方法：
https://blog.csdn.net/u010003609/article/details/100086911
6、make出错
/usr/include/c++/7/cstdlib:75:15: fatal error: stdlib.h: 没有那个文件或目录
#include_next
^~~~~~~~~~
compilation terminated.
cmake时加上参数-D ENABLE_PRECOMPILED_HEADERS=OFF
7、NVCC出错
nvcc fatal : Unsupported gpu architecture 'compute_20'
CMake Error at cuda_compile_generated_matrix_operations.cu.o.cmake:208 (message):
Error generating
/home/ubuntu/Mydata/opencv-2.4.11/build/modules/core/CMakeFiles/cuda_compile.dir/__/dynamicuda/src/cuda/./cuda_compile_generated_matrix_operations.cu.o
解决方法：
cmake时加上参数-D CUDA_GENERATION=Kepler