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[Solved] Cannot link libs statically

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    SGaist
    Lifetime Qt Champion
    wrote on 25 Feb 2015, 00:37 last edited by
    #6

    Did you check the compiler output panel to see what you have as -L parameters ?

    Interested in AI ? www.idiap.ch
    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      liimyd
      wrote on 28 Feb 2015, 21:13 last edited by
      #7

      Sorry for the slow reply! It was a busy week for school.

      This is what my compiler output says right before I get the errors, I'm not too sure what you mean by the -L parameters, is this it?

      g++ -static -static-libgcc -Wl,-s -Wl,-subsystem,windows -mthreads -o release\blood_visual.exe release/main.o release/mainwindow.o release/contours.o release/edge.o release/blood_visual_plugin_import.o release/moc_mainwindow.o release/moc_contours.o release/moc_edge.o -lmingw32 -LC:/Qt/Static/5.3/lib -lqtmain -LC:\Programs\opencvMinGW\install\x64\mingw\bin -lopencv_calib3d300 -lopencv_core300 -lopencv_features2d300 -lopencv_flann300 -lopencv_highgui300 -lopencv_imgcodecs300 -lopencv_imgproc300 -lopencv_ml300 -lopencv_objdetect300 -lopencv_photo300 -lopencv_shape300 -lopencv_stitching300 -lopencv_superres300 -lopencv_video300 -lopencv_videoio300 -lopencv_videostab300 -LC:/Qt/Static/5.3/plugins/accessible -lqtaccessiblewidgets -lQt5Widgets -LC:/Qt/Static/5.3/plugins/platforms -lqwindows -lwinspool -lshlwapi -lQt5PlatformSupport -LC:/Qt/Static/5.3/plugins/imageformats -lqdds -lqicns -lqico -lqjp2 -lqmng -lqtga -lqtiff -lqwbmp -lqwebp -lQt5Gui -lcomdlg32 -loleaut32 -limm32 -lwinmm -lglu32 -lopengl32 -lgdi32 -lQt5Core -lole32 -luuid -lws2_32 -ladvapi32 -lshell32 -luser32 -lkernel32

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        SGaist
        Lifetime Qt Champion
        wrote on 28 Feb 2015, 23:17 last edited by
        #8

        -L is used to give the linker additional folders to search for libraries. It seems that you didn't add the folder where the OpenCV libraries are located.

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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          liimyd
          wrote on 28 Feb 2015, 23:37 last edited by
          #9

          I'm slightly confused. From one of my previous posts above, didn't I correctly link the OpenCV folder containing the libraries in my .pro file? Or was I supposed to do it another way?

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            SGaist
            Lifetime Qt Champion
            wrote on 28 Feb 2015, 23:51 last edited by
            #10

            Where is opencv_calib3d300.lib located on your computer ?

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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              liimyd
              wrote on 28 Feb 2015, 23:56 last edited by
              #11

              They're all in C:\Programs\opencvMinGW\install\x64\mingw\bin, which was made with CMake.

              Perhaps I'm using the wrong types of libraries? All of the openCV files in that folder have a format like "libopencv_calib3d300.dll", for instance. Maybe I'm not supposed to be using .dll files? It works fine with my other kit though.

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                SGaist
                Lifetime Qt Champion
                wrote on 1 Mar 2015, 00:08 last edited by
                #12

                You don't link to dlls you link to lib files, where are these located ?

                Interested in AI ? www.idiap.ch
                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                  liimyd
                  wrote on 1 Mar 2015, 00:10 last edited by
                  #13

                  Ahhhhhhhh I see... :(
                  Yes, those should be in C:\Programs\opencv\build\x86\vc12\staticlib

                  Now I know why the folder was called "staticlib"... I will try this later! Thank you!!

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                    SGaist
                    Lifetime Qt Champion
                    wrote on 1 Mar 2015, 00:13 last edited by
                    #14

                    Not so fast ! Since you have dlls you probably have a second set of these in another folder. On Windows, the static libraries and the import libraries have the same extension...

                    Interested in AI ? www.idiap.ch
                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                      liimyd
                      wrote on 1 Mar 2015, 07:49 last edited by
                      #15

                      I can't find another folder containing the libs (neither in the original opencv folders, nor in the folders created by CMake), and as you predicted, the libraries in staticlib didn't work. Where can I go from here?

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                        SGaist
                        Lifetime Qt Champion
                        wrote on 2 Mar 2015, 00:03 last edited by
                        #16

                        I just realized: C:\Programs\opencv\build\x86\vc12\staticlib
                        That means that these libs are for Visual Studio not MinGW

                        Unless you built OpenCV yourself, just grab the archive again

                        Interested in AI ? www.idiap.ch
                        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                          liimyd
                          wrote on 2 Mar 2015, 06:41 last edited by
                          #17

                          Sorry, I don't quite understand. After I re-downloaded the package for opencv 3.0, I only had files with a .lib extension in the staticlib folder, which you already said not to use, and in C:\Programs\opencv\build\x86\vc12\lib, which only has opencv_ts300 and opencv_world300 (I don't know how to use these). I can't seem to find any other .lib files.

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                            SGaist
                            Lifetime Qt Champion
                            wrote on 3 Mar 2015, 00:37 last edited by
                            #18

                            Then where did you get the dlls from ?

                            Interested in AI ? www.idiap.ch
                            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                              liimyd
                              wrote on 3 Mar 2015, 01:18 last edited by
                              #19

                              The dlls were created with cmake, but I couldn't find the regular libraries from the cmake-generated folders. Do I have to rebuild opencv with cmake? I was using the cmake-gui and there were a lot of different options that I could check or uncheck. Maybe some of them will build the regular libraries?

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                                SGaist
                                Lifetime Qt Champion
                                wrote on 3 Mar 2015, 23:55 last edited by
                                #20

                                If the dlls were created with cmake then you already built it by hand so you should have the corresponding lib files somewhere

                                Interested in AI ? www.idiap.ch
                                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                  liimyd
                                  wrote on 8 Mar 2015, 19:28 last edited by liimyd 3 Aug 2015, 19:30
                                  #21

                                  I rebuilt opencv, this time with BUILD_SHARED_LIBS = Off, which made .a files.
                                  I read that .a files are the same as .lib files.
                                  My .pro file now looks like this:

                                  INCLUDEPATH += C:\\Programs\\opencvMinGW5\\install\\include
                                  
                                  LIBS += -LC:\\Programs\\opencvMinGW5\\install\\x64\\mingw\\staticlib \
                                  -lopencv_core300 \
                                  -lopencv_highgui300 \
                                  -lopencv_imgcodecs300 \
                                  -lopencv_imgproc300 \
                                  -lzlib \
                                  -lIlmImf
                                  

                                  I have a few compilation errors, and I wasn't able to google them, do you know what they mean?

                                  g++ -static -static-libgcc -Wl,-s -Wl,-subsystem,windows -mthreads -o release\blood_visual.exe release/main.o release/mainwindow.o release/contours.o release/edge.o release/blood_visual_plugin_import.o release/moc_mainwindow.o release/moc_contours.o release/moc_edge.o -lmingw32 -LC:/Qt/Static/5.3/lib -lqtmain -LC:\Programs\opencvMinGW5\install\x64\mingw\staticlib -lopencv_core300 -lopencv_highgui300 -lopencv_imgcodecs300 -lopencv_imgproc300 -lzlib -lIlmImf -LC:/Qt/Static/5.3/plugins/accessible -lqtaccessiblewidgets -lQt5Widgets -LC:/Qt/Static/5.3/plugins/platforms -lqwindows -lwinspool -lshlwapi -lQt5PlatformSupport -LC:/Qt/Static/5.3/plugins/imageformats -lqdds -lqicns -lqico -lqjp2 -lqmng -lqtga -lqtiff -lqwbmp -lqwebp -lQt5Gui -lcomdlg32 -loleaut32 -limm32 -lwinmm -lglu32 -lopengl32 -lgdi32 -lQt5Core -lole32 -luuid -lws2_32 -ladvapi32 -lshell32 -luser32 -lkernel32

                                  C:\Programs\opencvMinGW5\install\x64\mingw\staticlib\libopencv_highgui300.a(window_w32.cpp.obj):window_w32.cpp:(.text$ZL17icvCreateTrackbarPKcS0_PiiPFviEPFviPvES4+0x62f): undefined reference to `_imp__CreateToolbarEx@52'

                                  C:\Programs\opencvMinGW5\install\x64\mingw\staticlib\libopencv_imgproc300.a(imgwarp.cpp.obj):imgwarp.cpp:(.text$cvLogPolar+0x68b): undefined reference to `cvCartToPolar'

                                  C:\Programs\opencvMinGW5\install\x64\mingw\staticlib\libopencv_imgproc300.a(imgwarp.cpp.obj):imgwarp.cpp:(.text$cvLogPolar+0x6c9): undefined reference to `cvLog'

                                  C:/Qt/Tools/mingw491_32/bin/../lib/gcc/i686-w64-mingw32/4.9.1/../../../../i686-w64-mingw32/bin/ld.exe: C:\Programs\opencvMinGW5\install\x64\mingw\staticlib\libopencv_imgproc300.a(imgwarp.cpp.obj): bad reloc address 0x6c9 in section `.text$cvLogPolar'

                                  I think I might be missing some static libs or maybe the order I'm listing the libs is wrong.

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                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on 8 Mar 2015, 20:27 last edited by
                                    #22

                                    There's something not clear, I see MinGW5 in your OpenCV path and Qt uses 4.9.1, which one did you use to build OpenCV ?

                                    Interested in AI ? www.idiap.ch
                                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                      liimyd
                                      wrote on 9 Mar 2015, 05:26 last edited by liimyd 3 Sept 2015, 05:31
                                      #23

                                      OpenCVMinGW5 is just the name of the folder for my Cmake files (my sad 5th attempt at building OpenCV). I used 4.9.1 to build. Sorry for the confusion.

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                                        liimyd
                                        wrote on 18 Mar 2015, 23:02 last edited by
                                        #24

                                        Hi, I'm still looking for help with this; I was wondering if you had any suggestions. Thank you for your help so far though!

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