CMake Error: The following variables are used in this project, but they are set to NOTFOUND.

[JoshVarty]

After installing Docker and running:

git clone https://github.com/saiprashanths/dl-docker.git
cd dl-docker
docker build -t floydhub/dl-docker:gpu -f Dockerfile.gpu .

It builds for a long time but ultimately seems to fail with:

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
CUDA_CUDA_LIBRARY (ADVANCED)
    linked by target "example_gpu_alpha_comp" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_bgfg_segm" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_cascadeclassifier" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_cascadeclassifier_nvidia_api" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_driver_api_multi" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_driver_api_stereo_multi" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_farneback_optical_flow" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_generalized_hough" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_hog" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_houghlines" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_morphology" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_multi" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_opengl" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_optical_flow" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_opticalflow_nvidia_api" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_pyrlk_optical_flow" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_stereo_match" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_stereo_multi" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_super_resolution" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_surf_keypoint_matcher" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_video_reader" in directory /root/opencv/samples/gpu
    linked by target "example_gpu_video_writer" in directory /root/opencv/samples/gpu

-- Configuring incomplete, errors occurred!
See also "/root/opencv/build/CMakeFiles/CMakeOutput.log".
See also "/root/opencv/build/CMakeFiles/CMakeError.log".
The command '/bin/sh -c git clone --depth 1 https://github.com/opencv/opencv.git /root/opencv &&  cd /root/opencv && mkdir build && cd build && cmake -DWITH_QT=ON -DWITH_OPENGL=ON -DFORCE_VTK=ON -DWITH_TBB=ON -DWITH_GDAL=ON -DWITH_XINE=ON -DBUILD_EXAMPLES=ON .. &&      make -j"$(nproc)"  &&   make install && ldconfig &&   echo 'ln /dev/null /dev/raw1394' >> ~/.bashrc' returned a non-zero code: 1

[dferrante]

same here

[vegard]

See #48 and #50

[rivalak]

This problem caused by your OS miss this lib, so installing it can solve this problem. Just as my experience. :)