Compilation error: Opencv undefined reference about 4dface HOT 5 CLOSED

Hi,

I'm not sure I've personally tested 4dface on 16.04 yet, but I think this is a problem with your local build setup and/or OpenCV and not 4dface. I would suggest you check your CMake and linker settings and seek for help in OpenCV forums / Stackoverflow or a page like that.

from 4dface.

Thank you. I release that I have install both opencv2 and opencv3 on my machine. I guess this mess up the compilation. Is there a way to specify the location or the version of Opencv in CMake? I think I would be better if you could provide a variable to specify this.

from 4dface.

OpenCV/CMake already provide this, see initial_cache.cmake, and/or the documentation of FindOpenCV.cmake (in the cmake system folder).

from 4dface.

I'm going to close this, as it does not look like it's a 4dface issue. Feel free to re-open if it is. Thanks.

from 4dface.

I experienced the same problem with a locally compiled and installed OpenCV 3.2 on Ubuntu 16.04. I went to my opencv build directory and ran sudo make uninstall which completely removed my opencv installation. Following the procedures described in the README then was successful.

from 4dface.