[caffe2] Fails to build with OpenCV 4.0.0 #14355
Description
🐛 Bug
Caffe2 git master fails to build with OpenCV 4.0, giving the following error:
/storage/linux/abs/caffe2-git/src/pytorch/caffe2/video/optical_flow.cc: In function ‘void caffe2::OpticalFlowExtractor(const cv::Mat&, const cv::Mat&, int, cv::Mat&)’:
/storage/linux/abs/caffe2-git/src/pytorch/caffe2/video/optical_flow.cc:10:15: error: ‘DualTVL1OpticalFlow’ is not a member of ‘cv’
cv::Ptr<cv::DualTVL1OpticalFlow> tvl1 = cv::DualTVL1OpticalFlow::create();
^~~~~~~~~~~~~~~~~~~
/storage/linux/abs/caffe2-git/src/pytorch/caffe2/video/optical_flow.cc:10:15: note: suggested alternative: ‘DISOpticalFlow’
cv::Ptr<cv::DualTVL1OpticalFlow> tvl1 = cv::DualTVL1OpticalFlow::create();
^~~~~~~~~~~~~~~~~~~
DISOpticalFlow
/storage/linux/abs/caffe2-git/src/pytorch/caffe2/video/optical_flow.cc:10:15: error: ‘DualTVL1OpticalFlow’ is not a member of ‘cv’
/storage/linux/abs/caffe2-git/src/pytorch/caffe2/video/optical_flow.cc:10:15: note: suggested alternative: ‘DISOpticalFlow’
cv::Ptr<cv::DualTVL1OpticalFlow> tvl1 = cv::DualTVL1OpticalFlow::create();
^~~~~~~~~~~~~~~~~~~
DISOpticalFlow
/storage/linux/abs/caffe2-git/src/pytorch/caffe2/video/optical_flow.cc:10:34: error: template argument 1 is invalid
cv::Ptr<cv::DualTVL1OpticalFlow> tvl1 = cv::DualTVL1OpticalFlow::create();
^
/storage/linux/abs/caffe2-git/src/pytorch/caffe2/video/optical_flow.cc:10:47: error: ‘cv::DualTVL1OpticalFlow’ has not been declared
cv::Ptr<cv::DualTVL1OpticalFlow> tvl1 = cv::DualTVL1OpticalFlow::create();
^~~~~~~~~~~~~~~~~~~
/storage/linux/abs/caffe2-git/src/pytorch/caffe2/video/optical_flow.cc:32:11: error: base operand of ‘->’ is not a pointer
tvl1->calc(prev_gray, curr_gray, flow);
^~
make[2]: *** [caffe2/CMakeFiles/caffe2.dir/build.make:3400: caffe2/CMakeFiles/caffe2.dir/video/optical_flow.cc.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [CMakeFiles/Makefile2:2157: caffe2/CMakeFiles/caffe2.dir/all] Error 2
make: *** [Makefile:141: all] Error 2
To Reproduce
Steps to reproduce the behavior:
- mkdir build
- cd build
- cmake options
- make
Expected behavior
A successful build with opencv 4.0.0.
Environment
- PyTorch Version: git master (currently at 60e7d04)
- OS: Arch Linux x86_64
- How you installed PyTorch: source
- Build command you used (if compiling from source): already shown above
- Python version: 3.7.1
- CUDA/cuDNN version: not enabled in this example
- GPU models and configuration: not enabled in this example
- Compiler: gcc 8.2.1
- OpenCV: 4.0.0