Error: vx_tensor and VX_TYPE_TENSOR undeclared when installing OPENVX tuorial package

Question

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 the above link 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: successful

4.1. Download the open source at Open-source OpenVX on GitHub and extract it to ~/openvx_tutorial/tutorial_exercises/amdovx-core directory.

4.2. Compiling

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

Here is the log.

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

5.1. Download the OpenVX 1.1 Sample Implementation at Khronos OpenVX Resources 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

The the errors happen, reporting that the variable type vx_tensor and the value VX_TYPE_TENSOR are not declared.

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?

Thank you.

Answer 1

you have to use the khronos headers v1.2

Copy this headers into your tutorial_exercises/include/VX and rebuild all.

PS. some variables are undefined eg. VX_TENSOR_FIXED_POINT_POS & VX_TENSOR_NUM_OF_DIMS this should be VX_TENSOR_FIXED_POINT_POSITION & VX_TENSOR_NUMBER_OF_DIMS respectively.