Compiling a basic OpenCV + Cuda program on linux

Question

I\'ve worked with opencv on linux in the past, but not with cuda. I\'ve struggled with the following compilation error for months. And after trying many solutions i gave up

Answer 1

This looks like a linker problem. I don't know, if nvcc follows the same conventions as gcc, but I would try:

nvcc `pkg-config --cflags opencv` -L. -L/usr/local/cuda/lib -I. -I/usr/local/cuda/include -o threshold threshold.cpp `pkg-config --libs opencv` -lcuda -lcudart

More in general: If you write

gcc t.cpp -lB -lA

it means that libB depends on symbols from libA; t.cpp can depend on symbols from libA and libB.