Error: vx_tensor and VX_TYPE_TENSOR undeclared when installing OPENVX tuorial package


#1

I am a newbie of OpenVX and am trying to install the tutorial package for learning. I follow the instruction in Khronos OpenVX Tutorial Material to build it on my Ubuntu 16.4, the process is as followed.

1----- Download the tutorial package at https://github.com/rgiduthuri/openvx_tutorial and extract it to ~/openvx_tutorial directory

2----- Download and install OpenCV 3.1 library: successful. The output files are placed at ~/opencv/build.

3----- Install CMAKE: successful

4----- Download and install Open-source OpenVX from AMD: no error

4.1. Download the open source at https://github.com/GPUOpen-ProfessionalCompute-Libraries/amdovx-core and extract it to ~/openvx_tutorial/tutorial_exercises/amdovx-core directory.

4.2. Compiling: no error

cd ~/openvx_tutorial/tutorial_exercises/amdovx-core
cmake ../amdovx-core/ -DOpenCV_DIR="~/opencv/build/ -DCMAKE_DISABLE_FIND_PACKAGE_OpenCL=TRUE
make

5----- Download and Install Khronos OpenVX Resources

5.1. Download the OpenVX 1.1 Sample Implementation at https://www.khronos.org/registry/OpenVX/sample/openvx_sample_1.1.tar.bz2 and extract it to ~openvx_sample

5.2. Installing

cd ~/openvx_sample
make
make install

The output files are at ~/openvx_sample/out/LINUX/x86_64/release. Then the following test commands are successful.

LD_LIBRARY_PATH="~/openvx_sample/out/LINUX/x86_64/release"
cd raw
../out/LINUX/x86_64/release/vx_test
../out/LINUX/x86_64/release/vx_query
../out/LINUX/x86_64/release/vx_example

6----- Compile the tutorial package

cd ~/openvx_tutorial
mkdir build-open-source
cd build-open-source
cmake ../tutorial_exercises
make

Then the errors happen, reporting that the variable type vx_tensor and the value VX_TYPE_TENSOR are not declared in file “amdovx-core/openvx/include/VX/vx_khr_nn.h” and “amdovx-core/openvx/include/vx_ext_amd.h” respectively.
I have also tried to build the package with QT but the same errors happened. Is there anyone encountered these errors before? How can I fix it?

Thanks in advance.


#2

Hi Dan, Thanks for reporting the problem. The errors were due to header files getting out of sync.
I updated the header files in openvx_tutorial repo from Khronos OpenVX registry and it fixed the problem.
If you find any other issue, please file in issue on the github repo.

Radha


#3

Thank Radha,

Let me try it again.