I have been trying to extend python with a OpenCV module written in C++. I am encountering 2 problems during this.
1) Setup.py - How does one include cv.h library here?
libraries = ['opencv'],
library_dirs = ['/usr/local/lib'],2) Importing the cv.h in the C++ module file?
#include "cv.h"
using namespace cv;Throws compile time error -
t1.cpp:3:16: fatal error: cv.h: No such file or directory
Got it to work
1) In Setup.py
include_dirs = ['/usr/local/include'],
libraries = ['opencv_core', 'opencv_highgui'],
library_dirs = ['/usr/local/lib'],
2) C++ module
#include <opencv/cv.h>
#include <opencv/highgui.h>
The C++ header file is #include <opencv2/opencv.hpp>, if you have /usr/local/include on your header path. So what you should be doing is -
#include <opencv2/opencv.hpp>
using namespace cv;
As for including the OpenCV libarries for linking, you should look at the libraries in /usr/local/lib/libopencv*. There are several OpenCV libraries, each corresponding to one package, so you may not need to link all the libraries, if you are not using that package.
Personally, I would work by statically linking your module with a libopencv.a and the linking the entire module to Python. If you are bothered about extra code being linked, you can strip the unused symbols.
