Usr/bin/ld cannot find -lopencv_contrib

1

I use opencv 4.5.1.
When I tried to compile caffe , it show the error “usr/bin/ld cannot find -lopencv_contrib”.
I was wondering whether the opencv_contrib 4.5.1 has libopencv_contrib.so.
Do I have to use opencv2.x or opencv3.x?

2

welcome.

there is no “opencv_contrib” library. the contrib repository contains several modules, each becomes a library, same as the modules in the main repository.

who instructed you to pass this identifier to the linker?

1 Like
3

Thanks for your reply ,sir
I was trying to build the caffe which was used to train openpose model .
When it built the caffe module , it show this error.

4

well there was an opencv_contrib library in opencv2.4,
also the caffe github is full of complaints about using outdated opencv versions there.
but i have doubts, if this is actually used, maybe you can get away with simply removing it from the linker cmdline

5

Thanks for your help.
I’ll try it again by using the opencv2.4 because I have to train the model of openpose .
I must solve this error.