c++ - OpenCV, Undefined symbols for architecture x86_64 error -

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i'm trying opencv work on computer - simple programs can work program i'm unable to. error getting follow:

    undefined symbols architecture x86_64:   "cv::namedwindow(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)", referenced from:       _main in ccux28ge.o   "cv::split(cv::mat const&, std::vector<cv::mat, std::allocator<cv::mat> >&)", referenced from:       computefocusdpc(std::vector<r_image, std::allocator<r_image> >, int, float, int, int, int, int, cv::mat*) in ccux28ge.o       qdpc_loop(std::vector<cv::mat, std::allocator<cv::mat> >, std::vector<cv::mat, std::allocator<cv::mat> >, double) in ccux28ge.o   "cv::imread(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)", referenced from:       _main in ccux28ge.o   "cv::imshow(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_inputarray const&)", referenced from:       _main in ccux28ge.o ld: symbol(s) not found architecture x86_64

i'm trying compile file command line

g++-5.1.0 -o qdpc_desktop qdpc.cpp -i. -std=c++11 -ggdb -fopenmp -lopencv_core -lopencv_imgproc -lopencv_highgui -lopencv_ml -lopencv_video -lopencv_features2d -lopencv_calib3d -lopencv_objdetect -lopencv_contrib -lopencv_legacy -lopencv_stitching

i know error not in code of qdpc.cpp since can compile on friend's ubuntu (i'm working on mac) - wondering if there's wrong opencv? i've read online online might linker problem can't life of me figure problem out. version of opencv have 2.4.11, , version friend able compile 2.4.9.

all appreciated!


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