Can't get the DLL to load in Editor

[Densen90]

Hi there,

I installed the mediapipe libraries and got the cpu examples to work.
I can also run your commands 'make cpu' and 'make install'.

Nonetheless I get the "DllNotFoundException: mediapipe_c" exception when running the CPU example scene. If I try to load the libmediapipe_c plugin on startup I get the following warning
"Plugins: Couldn't open Assets/MediaPipe/SDK/Plugins/libmediapipe_c.so, error: Assets/MediaPipe/SDK/Plugins/libmediapipe_c.so: undefined symbol: _ZN2cv6String8allocateEm"

I installed OpenCV as mentioned in the mediapipe installation guide. I am running on Ubuntu 18.04.5 LTS and Unity 2019.4.15f1

I would be grateful for any help.

[homuler]

Maybe OpenCV is not installed under /usr/lib (e.g. /usr/lib/x86_64-linux-gnu).
cf. https://github.com/homuler/MediaPipeUnityPlugin#opencv

In this case, please update opencv_linux.BUILD according to your environment.

[Densen90]

Hi there, thank you very much, also for your fast answer. You were right the libraries were under /usr/lib/x86_64-linux-gnu

For anyone encountering this issue maybe the following is helping:

1. update opencv_linux.BUILD for opencv, so instead of 'lib/libopencv*.so' it is 'lib/x86_64-linux-gnu/libopencv*.so'
2. rerun make cpu and make install
3. if unity was open, restart or reimport everything

That worked for me!

Thanks again!