install opencv on ubuntu 18.04

Question

I've been trying to install opencv , using thisreferance . But when I try to run make command, I get error as follows:

/opt/opencv/modules/videoio/src/cap_dc1394_v2.cpp:59:10: fatal error: 
dc1394/dc1394.h: No such file or directory
#include <dc1394/dc1394.h>
      ^~~~~~~~~~~~~~~~~
compilation terminated.
modules/videoio/CMakeFiles/opencv_videoio.dir/build.make:278: recipe for 
target 'modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_dc1394_v2.cpp.o' 
failed
make[2]: *** 
[modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_dc1394_v2.cpp.o] Error 
1
CMakeFiles/Makefile2:6307: recipe for target 
'modules/videoio/CMakeFiles/opencv_videoio.dir/all' failed
make[1]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2
Makefile:162: recipe for target 'all' failed
make: *** [all] Error 2

I tried so many times to install opencv , when the installation is completed, I tried to check the installation, and then I get error that there is no module named opencv .

Answer 1

I recommend to use this guide to download the OpenCV Libary to the linux. (ubuntu 18.04).

I did it today on my ubuntu 18.04 and it worked perfectly, but please read all the guide and don't just copy the terminal commands.