void cvInitSubdivDelaunay2D(CvSubdiv2D* subdiv, CvRect rect) {
    void *fptr;

    fptr = dlsym(_Chcv_handle, "cvInitSubdivDelaunay2D_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return;
    }
    dlrunfun(fptr, NULL, cvInitSubdivDelaunay2D, subdiv, rect);
}
