openpose compilation tells undefined reference to cv::VideoCapture::VideoCapture(cv::String const&)

Question

I have comipled caffe with GPU disabled,then

cp caffe/build/Makefile openpose/Makefile.conf

run

 make all -j 6

Answer 1

With CMake installer (recommended one):

This error should never occur with the CMake installer, so I would recommend you to use the recommended installer.

With Makefile installer (deprecated one):

I have compiled caffe with GPU disabled: You cannot disable GPU for OpenPose (nor the Caffe that OpenPose will use). I am sorry but the CPU code is not finished at all (and not expected to be finished at the moment given the very slow speed). You will have to use CUDA + cuDNN.

In order to fix the OpenCV not found problem, you need to enable in both Makefile.conf files (the one from OpenPose and Caffe), the use OpenCV 3 flag.