Can't find opencv.hpp, however it is not installed in /usr/include/

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I tried /usr/local/include, but it wasn't there either. The larger issue is trying to install caffe. So in the makefile.config of caffe I tried adding to the "INCLUDE_DIRS": /home/myName/Documents/my\ folder/opencv/include. However this didn't work either,still it couldn't find it, although that folder does contain "opencv2/opencv.hpp". As an aside: in the mean time I discovered that I had CUDA turned off in the makefile. When I turned it back on it couldn't find "cudnn.h". This was solved by adding the relevant folder to INCLUDE_DIRS. The only difference I could find is that this file wasn't in a subfolder and that this path didn't contain a space. Could either be the cause of the problem?

again, the src/include folder contains "opencv2/opencv.hpp", but none of the other required module headers.

(also, you should not use backslashes (\) on linux)

then, unfortunately, we can't help you installing caffe, here ;(

I don't quite understand your comment. If src/include contains opencv2/opencv.hpp (and it does), why can't caffe find that specific file? And if also all files in the modules folder are necessary, how are the paths to those files usually added? And finally: I was trying to use the backslash to escape the space character, is that wrong?

make install copies all headers to whatever CMAKE_INSTALL_PREFIX points to (again, usually /usr/local/include).

you should not try to use any includes from the src folder at all.

Thank you! After double checking it appears I indeed either forgot to use make install in my final attempt at installing openCV, or missed that it failed due to lack of root access. Now it works!