opencv - libprotobuf.so.12 error

virtualdvid · ‎01-10-2020

Hi, I was using `opencv` as usual on devcloud but today I got this error:

(my_env) uxxxxxx@s001-n121:~$ python
 Python 3.6.3 |Intel Corporation| (default, Feb 12 2018, 06:37:09)
 [GCC 4.8.2 20140120 (Red Hat 4.8.2-15)] on linux
 Type "help", "copyright", "credits" or "license" for more information.
 Intel(R) Distribution for Python is brought to you by Intel Corporation.
 Please check out: https://software.intel.com/en-us/python-distribution
 >>> import cv2
 Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
 ImportError: libprotobuf.so.12: cannot open shared object file: No such file or directory

I started a new env to see if my current env is the problem and followed the steps from this question:

https://forums.intel.com/s/question/0D70P000006VnuOSAS

and got the same result.

Tried:

`pip install opencv-python`

`conda install -c anaconda opencv`

Lewis-H · ‎01-10-2020

OpenCV DNN module is "opencv_dnn" (not "opencv_dnn_modern").

"opencv_dnn_modern" is disabled in default build of OpenCV.

To force custom pre-built protobuf library you need to pass these CMake variables:

-DBUILD_PROTOBUF=OFF -DPROTOBUF_UPDATE_FILES=ON
-DProtobuf_LIBRARY=...
-DProtobuf_INCLUDE_DIR=...
-DProtobuf_PROTOC_EXECUTABLE=...

(should work fine after merging of #10092)

Regards,

Lewis

Alberto_R_Intel · ‎01-10-2020

virtualdvid, Thank you for posting in the Intel® Communities Support.

In order for you to receive the most accurate assistance on this matter you can always visit, sign in and submit your inquiry in our Intel® Software support site:

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Regards,

Alberto R.

Intel Customer Support Technician

A Contingent Worker at Intel