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Integrating exiv2 with Qt

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    saitej
    wrote on 7 Sept 2016, 07:28 last edited by
    #7

    @SGaist

    I have added the path in the run part.Right now, the run environment reads:

    Use Build Environment and
    Set EXIVPATH to C:\Users\Sai\Desktop\trial\exifdata\exifData\libs\exif\bin

    Should I add this EXIVPATH somewhere else?

    Thanks!

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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.

      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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        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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                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 ?

                        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 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 ?

                                    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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                                      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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