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luca_l_
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Intel Compiler: warning #11021: unresoved Referenced in

I built [opencv][1] with the following cmake options:

    cmake  -G "Eclipse CDT4 - Unix Makefiles" -D CMAKE_BUILD_TYPE=RelWithDebInfo -DWITH_TBB=OFF -DWITH_OPENMP=ON -DCMAKE_C_COMPILER=icc -DCMAKE_CXX_COMPILER=icpc -DCMAKE_CXX_FLAGS="-debug inline-debug-info -parallel-source-info=2 -ipo -parallel -xCORE-AVX2 -Bdynamic" ..

However, when I try to build (with `icpc`) the application which uses opencv (built with `icpc`) these warning messages appears:

    icpc -shared-intel -L/home/luca/ParallelOpenCV/originalOpenCV/lib -parallel -o "SURFAllInOne"  ./main.o ./surf.o   -lopencv_core -lopencv_xfeatures2d -lopencv_highgui -lopencv_imgproc -lopencv_imgcodecs
    ipo: warning #11021: unresolved gzeof
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_core.so
    ipo: warning #11021: unresolved gzrewind
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_core.so
    ipo: warning #11021: unresolved gzopen
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_core.so
    ipo: warning #11021: unresolved gzclose
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_core.so
    ipo: warning #11021: unresolved gzgets
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_core.so
    ipo: warning #11021: unresolved gzputs
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_core.so
    ipo: warning #11021: unresolved _ZNK2cv9Feature2D14descriptorSizeEv
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZN2cv9Feature2D4readERKNS_8FileNodeE
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZNK2cv9Feature2D14descriptorTypeEv
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZN2cv9Feature2D7computeERKNS_11_InputArrayERSt6vectorINS_8KeyPointESaIS5_EERKNS_12_OutputArrayE
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZTTN2cv9Feature2DE
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZN2cv15KeyPointsFilter16runByImageBorderERSt6vectorINS_8KeyPointESaIS2_EENS_5Size_IiEEi
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZN2cv15KeyPointsFilter10retainBestERSt6vectorINS_8KeyPointESaIS2_EEi
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZN2cv9Feature2DD2Ev
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZN2cv9Feature2D16detectAndComputeERKNS_11_InputArrayES3_RSt6vectorINS_8KeyPointESaIS5_EERKNS_12_OutputArrayEb
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZN2cv15KeyPointsFilter16removeDuplicatedERSt6vectorINS_8KeyPointESaIS2_EE
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZN2cv9Feature2D6detectERKNS_11_InputArrayERSt6vectorINS_8KeyPointESaIS5_EES3_
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZN2cv9Feature2D6detectERKNS_11_InputArrayERSt6vectorIS4_INS_8KeyPointESaIS5_EESaIS7_EES3_
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZTIN2cv9Feature2DE
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZN2cv9Feature2D7computeERKNS_11_InputArrayERSt6vectorIS4_INS_8KeyPointESaIS5_EESaIS7_EERKNS_12_OutputArrayE
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZNK2cv9Feature2D5emptyEv
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZNK2cv9Feature2D11defaultNormEv
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZNK2cv9Feature2D5writeERNS_11FileStorageE
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved _ZN2cv15KeyPointsFilter15runByPixelsMaskERSt6vectorINS_8KeyPointESaIS2_EERKNS_3MatE
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_xfeatures2d.so
    ipo: warning #11021: unresolved gtk_file_chooser_set_do_overwrite_confirmation
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_mutex_lock
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_main_iteration
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_window_resize
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_get_current_time
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_file_chooser_set_current_name
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_type_check_instance_cast
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_destroy
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_window_fullscreen
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_mutex_unlock
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_box_pack_end
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_get_colormap
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_cond_broadcast
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_box_pack_start
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gdk_cairo_set_source_pixbuf
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_signal_connect_data
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_add_events
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_window_set_title
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved cairo_paint
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_free
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_dialog_run
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gdk_window_move_resize
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_range_set_range
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_source_remove
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_range_get_type
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_main_iteration_do
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_cond_new
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_init
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_file_chooser_add_filter
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_range_set_value
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_window_get_title
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_cond_timed_wait
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_file_filter_new
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_thread_yield
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_return_if_fail_warning
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_window_set_geometry_hints
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_window_set_resizable
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_queue_resize
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_get_events
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_file_chooser_set_filter
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_label_new
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_dialog_get_type
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_file_filter_add_pattern
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_time_val_add
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_object_get_type
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_box_get_type
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gdk_window_set_user_data
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_window_move
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_new
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_file_chooser_get_type
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_container_get_type
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_type_class_peek
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_get_visual
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_file_chooser_get_filename
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_type_register_static_simple
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_scale_set_draw_value
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_get_window
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_vbox_new
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_range_get_value
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gdk_cairo_create
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_style_set_background
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_type_check_class_cast
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_thread_new
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_timeout_add
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_file_filter_set_name
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gdk_window_new
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_hbox_new
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_object_unref
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_type_check_instance_is_a
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_events_pending
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_window_new
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_scale_get_type
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_window_unfullscreen
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_usleep
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_queue_draw
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_thread_self
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_show
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_file_chooser_dialog_new
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_get_realized
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_hscale_new_with_range
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_container_add
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_cond_wait
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved cairo_destroy
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gdk_pixbuf_new_from_data
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_scale_set_digits
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_window_get_type
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_get_type
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_style_attach
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved g_mutex_new
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved gtk_widget_set_realized
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_highgui.so
    ipo: warning #11021: unresolved deflateParams
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so
    ipo: warning #11021: unresolved inflate
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so
    ipo: warning #11021: unresolved deflateReset
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so
    ipo: warning #11021: unresolved inflateInit_
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so
    ipo: warning #11021: unresolved deflateInit_
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so
    ipo: warning #11021: unresolved inflateReset
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so
    ipo: warning #11021: unresolved deflate
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so
    ipo: warning #11021: unresolved uncompress
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so
    ipo: warning #11021: unresolved deflateEnd
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so
    ipo: warning #11021: unresolved compress
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so
    ipo: warning #11021: unresolved inflateSync
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so
    ipo: warning #11021: unresolved inflateEnd
            Referenced in /home/luca/ParallelOpenCV/originalOpenCV/lib/libopencv_imgcodecs.so

What does this means? The code is correct but I wonder if I should bother about this (especially if this make the code slower, I talk about it [here][2])


  [1]: http://opencv.org
  [2]: https://software.intel.com/en-us/forums/intel-c-compiler/topic/712626

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