cmake cannot find -lopencv_dep_cudart

[Eyshika]

Firstly I was getting error:
cmake cannot find -lopencv_dep_cudart

then i changed CMakeLists.txt file by this:
set(CUDA_USE_STATIC_CUDA_RUNTIME OFF)

After that I got an error:
ERROR: Unable to open:… /tutorial_videos/PETS09-S!-L1-View.avi

[AastaLLL]

Hi,

This error message is not a bug.
Your application can’t find the required video.

Please recheck the sample.
Thanks.

[Eyshika]

I have cloned direcly from here: GitHub - rgiduthuri/openvx_tutorial: Khronos OpenVX Tutorial Material
and did all the required steps to run it.

[AastaLLL]

Hi,

It looks like you should download the video via this script.

rgiduthuri/openvx_tutorial/blob/master/scripts/download-videos.sh

[ericksonlushan]

The actual problem is that ld is asking for “-lopencv_dep_cudart”
There is no library named “opencv_dep_cudart.”
There may be a pkg-config or cmake token named opencv_dep_cudart, which is supposed to resolve to the appropriate .so file, but that’s not happening here.
The bug is not in the paths or search paths for libcudart.so; the bug is in the cmake build system support files for cuda, or perhaps with how your CMakeFile.txt is set up (but I’ve seen correct CMakeFiles break like this.)

A short-term hack that fixes this for me is the following patch:

--- /tmp/unpatched      2017-07-27 05:35:44.164961655 +0000
+++ /usr/share/OpenCV/OpenCVConfig.cmake        2017-07-27 05:34:06.129390969 +0000
@@ -281,6 +281,11 @@
       set_target_properties("opencv_dep_${_tmp}" PROPERTIES IMPORTED_LOCATION "${l}")
     endif()
   endforeach()
+
+  # HACK jwatte 2017-07-26 trying to find the dynamic library
+  add_library("opencv_dep_cudart" UNKNOWN IMPORTED)
+  set_target_properties("opencv_dep_cudart" PROPERTIES IMPORTED_LOCATION /usr/local/cuda-8.0/targets/aarch64-linux/lib/libcudart.so)
+
 endif()

 # ==============================================================

I think that’s a really problem where it is, and the diff file helped me.
Thanks!!! I think your answer is a better one.

[taylor3h6vy]

I had this issue when trying to compile a version of DBoW2 and had multiple versions of opencv installed (although im unsure if the number of opencv versions installed had any effect). To fix i specified the version of OpenCV (3.0.0) in find_package() in CMakeLists.txt and it built no problem.

[sin2lee]

The system does not possess shared object :opencv_dep_cudart, so there is no way that cmake can link to the object.

Trick Solution: make a soft link to a random object in opencv lib directory [ie :ln -s libopencv_ml.so libopencv_dep_cudart.so]