I hope I installed OpenCV on Debian-8 from the Git Repository as prescribed at https://docs.opencv.org/2.4/doc/tutorials/introduction/linux_install/linux_install.html
As a result I got the following folders in my home directory: /home/a/opencv/ /home/a/opencv/build/ /home/a/opencv/build/bin/
/home/a/opencv/samples/ /home/a/opencv/samples/cpp/ (here there are test .cpp samples)
As prescribed, I moved to /home/a/opencv/build/bin/ and from there executed the following command:
../../samples/cpp/opencv_version.cpp
(opencv_version.cpp is sitting in /home/a/opencv/samples/cpp/)
At first I got "Permission denied" although I was logged in as su.
This was corrected using chmod u+x opencv_version.cpp
Yet it replies with several errors. The first one being: line 1: //: Is a directory
Indeed, the 1st line of opencv_version.cp starts with comments // . This indicates that I am doing something fundamentally wrong and even stupid as this is my first encounter with openCV. What is wrong?