Google colab cmake error

[temirlanzzz]

I am trying to run this on Google Colab, however cmake returns this error:
-- CUDA Architecture: -arch=sm_75
-- CUDA Version: 11.1
-- CUDA Path: /usr/local/cuda
-- CUDA Libararies: /usr/local/cuda/lib64/libcudart_static.a;Threads::Threads;dl;/usr/lib/x86_64-linux-gnu/librt.so
-- CUDA Performance Primitives: /usr/local/cuda/lib64/libnppc.so;/usr/local/cuda/lib64/libnppial.so;/usr/local/cuda/lib64/libnppicc.so;;/usr/local/cuda/lib64/libnppidei.so;/usr/local/cuda/lib64/libnppif.so;/usr/local/cuda/lib64/libnppig.so;/usr/local/cuda/lib64/libnppim.so;/usr/local/cuda/lib64/libnppist.so;/usr/local/cuda/lib64/libnppisu.so;/usr/local/cuda/lib64/libnppitc.so;/usr/local/cuda/lib64/libnpps.so
-- Found CUDNN: /usr/lib/x86_64-linux-gnu/libcudnn.so
-- Found CUDNN include: /usr/include
-- Found NVINFER: /usr/lib/x86_64-linux-gnu/libnvinfer.so
-- Found NVINFER include: /usr/include/x86_64-linux-gnu
Eigen DIR: /usr/include/eigen3
install dir:/usr/local
-- Configuring done
-- Generating done
-- Build files have been written to: /content/tkdnn/build
Consolidate compiler generated dependencies of target kernels
[ 21%] Built target kernels
Consolidate compiler generated dependencies of target tkDNN
[ 21%] Building CXX object CMakeFiles/tkDNN.dir/src/Int8BatchStream.cpp.o
/content/tkdnn/src/Int8BatchStream.cpp:4:10: fatal error: opencv2/dnn/dnn.hpp: No such file or directory
#include <opencv2/dnn/dnn.hpp>
^~~~~~~~~~~~~~~~~~~~~
compilation terminated.
CMakeFiles/tkDNN.dir/build.make:215: recipe for target 'CMakeFiles/tkDNN.dir/src/Int8BatchStream.cpp.o' failed
make[2]: *** [CMakeFiles/tkDNN.dir/src/Int8BatchStream.cpp.o] Error 1
CMakeFiles/Makefile2:214: recipe for target 'CMakeFiles/tkDNN.dir/all' failed
make[1]: *** [CMakeFiles/tkDNN.dir/all] Error 2
Makefile:135: recipe for target 'all' failed
make: *** [all] Error 2

I have installed tensorrt using pip:
!pip install --upgrade --index-url https://pypi.ngc.nvidia.com nvidia-tensorrt==8.2.5.1
and it seems to install correctly:
import tensorrt as trt
trt.version
returns: 8.2.5.1
Could you provide a guide on running this on Google Colab? Seems like I am missing something in installation.

[ceccocats]

tkDNN require opencv compled with dnn module, but is only for that Int8batchStream file.
If you cant install opencv with dnn module just comment these lines:

tkDNN/src/Int8BatchStream.cpp

Line 4 in d4f7b4a

#include <opencv2/dnn/dnn.hpp>

tkDNN/src/Int8BatchStream.cpp

Line 129 in d4f7b4a

m_LetterboxImage = cv::dnn::blobFromImage(m_LetterboxImage);

tkDNN/src/Int8BatchStream.cpp

Line 130 in d4f7b4a

res.assign(m_LetterboxImage.begin<float>(), m_LetterboxImage.end<float>());

of course int8 will not work