[Digikam-devel] [digikam] [Bug 349601] digikam compile fine with OpenCV 2.X but not with 3.x

[Viktor Jancik]

https://bugs.kde.org/show_bug.cgi?id=349601

Viktor Jancik <vjancik at redhat.com> changed:

           What    |Removed                     |Added
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                 CC|                            |vjancik at redhat.com

--- Comment #6 from Viktor Jancik <vjancik at redhat.com> ---
Created attachment 94096
  --> https://bugs.kde.org/attachment.cgi?id=94096&action=edit
libkface-15.04.2-opencv3.patch

I found an additional error,

The haarcascade files are located in /usr/share/OpenCV/haarcascades, which can
be seen by running:
rpm -ql opencv

If you have opencv version 3 installed.

However the original ${OpenCV_DIR} points to the base of the OpenCV library
directory.
As described here: http://code.opencv.org/attachments/196/FindOpenCV.cmake
Specifically /usr/lib64/OpenCV

Instead, {OpenCV_SHARED} should be used which points to /usr/share/OpenCV as
described here:
https://github.com/Itseez/opencv/blob/master/cmake/OpenCVConfig.cmake

The values of these variables can be verified after building by looking at
CMake Cache.txt

Additionally I changed the minimum required version to 3.0.0 because I am not
sure if the changes also build for OpenCV version 2.4, this needs to be
checked.

And lastly I included face.hpp instead of face/facerec.hpp but they include
each other so it's the same.


The successful build with these changes can be seen here:
https://copr.fedoraproject.org/coprs/vjancik/opencv3-deps/build/109623/

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