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Integrating exiv2 with Qt

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  • S Offline
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    SGaist
    Lifetime Qt Champion
    wrote on 7 Sept 2016, 07:34 last edited by
    #8

    Again: you have to add that path to the PATH environment variable. The loader doesn't care about EXIVPATH to find the .dll it needs.

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    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      saitej
      wrote on 7 Sept 2016, 07:41 last edited by
      #9

      Sorry!

      I have now added in the Path variable. The error code has changed to 139

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      • S SGaist
        6 Sept 2016, 23:01

        Hi,

        Your .pro file is wrong. You shouldn't link to .dll files but to .lib files.

        So for exiv2 it should be something like LIBS += -lexiv2

        Did you also check that you are using the same compiler everywhere ? That's pretty important on Windows.

        On a side note, there's no need to have several time the exact same folder you your LIBS line.

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        saitej
        wrote on 7 Sept 2016, 08:02 last edited by
        #10

        @SGaist said in Integrating exiv2 with qt:

        Did you also check that you are using the same compiler everywhere ? That's pretty important on Windows.

        I have compiled it using msys and mingw. I am not able to get the mingw32 version

        I am using Qt installed from qt-opensource-windows-x86-mingw492-5.6.1-1.exe file.

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          SGaist
          Lifetime Qt Champion
          wrote on 7 Sept 2016, 20:56 last edited by
          #11

          Do you mean that you get that error 139 at startup ?

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            saitej
            wrote on 8 Sept 2016, 14:07 last edited by
            #12

            Sorry for the late reply!
            Yes

            During startup program exited with code 0x0000c139

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            • S Offline
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              SGaist
              Lifetime Qt Champion
              wrote on 8 Sept 2016, 15:08 last edited by
              #13

              AFAIK, it means that it fails to load a .dll Do you have other dependencies ?

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                saitej
                wrote on 8 Sept 2016, 15:11 last edited by
                #14

                most probably no .. coz i gave local/bin also as the path

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                  SGaist
                  Lifetime Qt Champion
                  wrote on 8 Sept 2016, 15:53 last edited by
                  #15

                  local/bin ? On Windows ?

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                    saitej
                    wrote on 8 Sept 2016, 16:12 last edited by
                    #16

                    Ya ... mingw installation path!!

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                      SGaist
                      Lifetime Qt Champion
                      wrote on 8 Sept 2016, 19:42 last edited by
                      #17

                      Just to rule out the obvious, can you copy the exiv2 .dll in the same folder as the application and check whether the application starts ?

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                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                      S 1 Reply Last reply 14 Sept 2016, 07:36
                      0
                      • S SGaist
                        8 Sept 2016, 19:42

                        Just to rule out the obvious, can you copy the exiv2 .dll in the same folder as the application and check whether the application starts ?

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                        saitej
                        wrote on 14 Sept 2016, 07:36 last edited by
                        #18

                        @SGaist

                        Sorry for the late reply!!

                        Ya .. i have tried that already but gives the same error!

                        In the mean time I actually have tried many libraries and all are having same problem. So I guess there is a problem in either the build or the way of including the library. I will brief you exactly what I have done and the versions.

                        Build:

                        • I have successfully build the source code in the qt project folder using --prefix option with msys terminal with mingw compiler.

                        mingw32-g++.exe (GCC) 5.3.0
                        mingw32-gcc-5.3.0.exe (GCC) 5.3.0

                        • I am using Qt installed from qt-opensource-windows-x86-mingw492-5.6.1-1.exe

                        • I have added mingw32-g++.exe (GCC) 5.3.0 as the compiler manually

                        • I have added the external library (libexiv2.dll.a) in Qtcreator via Add Library external library and static mode.

                        • I have also added to the PATH variable you have suggested.

                        The .pro reads this:

                        win32: LIBS += -L$$PWD/libs/exiv2build/lib/ -llibexiv2.dll
                        
                        INCLUDEPATH += $$PWD/libs/exiv2build/include
                        DEPENDPATH += $$PWD/libs/exiv2build/include
                        
                        

                        It still gives me the error During startup program exited with code 0x0000c139.

                        Any suggestion on what might have gone wrong?

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                          SGaist
                          Lifetime Qt Champion
                          wrote on 14 Sept 2016, 12:58 last edited by
                          #19

                          Do I understand understand correctly that you are trying to run application with libraries built with two different versions of MinGW ?

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                          S 1 Reply Last reply 15 Sept 2016, 06:07
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                          • S SGaist
                            14 Sept 2016, 12:58

                            Do I understand understand correctly that you are trying to run application with libraries built with two different versions of MinGW ?

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                            saitej
                            wrote on 15 Sept 2016, 06:07 last edited by saitej
                            #20

                            No.

                            I have right now changed it to the same compiler by changing the kit

                            Also, I have used the dependency walker on the dll file and have found problems in these dependencies:

                            I have attached the dependencywalker image for the same:

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                              SGaist
                              Lifetime Qt Champion
                              wrote on 15 Sept 2016, 11:43 last edited by
                              #21

                              What image format is it ?

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                                saitej
                                wrote on 16 Sept 2016, 06:27 last edited by
                                #22

                                dependency walker

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                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on 16 Sept 2016, 20:28 last edited by
                                  #23

                                  Can you provide an image that is in a more mainstream format ?

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                                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                    saitej
                                    wrote on 19 Sept 2016, 10:28 last edited by
                                    #24

                                    I can send you in text format but it might be difficult to decipher.

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                                      SGaist
                                      Lifetime Qt Champion
                                      wrote on 19 Sept 2016, 20:48 last edited by
                                      #25

                                      A screenshot of Dependency Walker's window might be simpler.

                                      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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                                        SGaist
                                        Lifetime Qt Champion
                                        wrote on 19 Sept 2016, 20:51 last edited by
                                        #26

                                        From a look at the text file. There's at least one architecture mismatch. Double check libexiv2, if I saw things correctly, it's a 64bit library and you are using a 32bit Qt.

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

                                        S 1 Reply Last reply 2 Nov 2016, 11:56
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                                        • S SGaist
                                          19 Sept 2016, 20:51

                                          From a look at the text file. There's at least one architecture mismatch. Double check libexiv2, if I saw things correctly, it's a 64bit library and you are using a 32bit Qt.

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                                          saitej
                                          wrote on 2 Nov 2016, 11:56 last edited by
                                          #27

                                          @SGaist

                                          Sorry for revoking the topic after a long time.

                                          I am using both 32 bit (QT and mingw). When I load the dll in dependency walker, these are the missing dlls.

                                          Kernel32.dll
                                          MSVCRT.DLL
                                          PSAPI.DLL
                                          USER32.DLL
                                          WS2_32.DLL

                                          I am unable to find these in the mingw bin folder also. So where can i get these dll's so that I can manually add them ?

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