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QSqlDatabase: QPSQL driver not loaded once again!

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  • raven-worxR raven-worx

    @mbnoimi
    the problem is this line

    QLibraryPrivate::loadPlugin failed on "C:/Qt/Qt5.7.0/5.7/mingw53_32/plugins/sqldrivers/qsqlpsqld.dll" : "Cannot load library C:\\Qt\\Qt5.7.0\\5.7\\mingw53_32\\plugins\\sqldrivers\\qsqlpsqld.dll: %1 is not a valid Win32 application."
    

    seems to be an psql specific error

    M Offline
    M Offline
    mbnoimi
    wrote on last edited by
    #9

    Thanks @raven-worx I did I mentioned in Stackoverflow link but unfortunately I still get same result.

    NOTE: I update the log of QT_DEBUG_PLUGINS output:
    https://gist.github.com/mbnoimi/154b31a77a079c45bbdd63d4c1cfe3bc

    raven-worxR 1 Reply Last reply
    0
    • M mbnoimi

      Thanks @raven-worx I did I mentioned in Stackoverflow link but unfortunately I still get same result.

      NOTE: I update the log of QT_DEBUG_PLUGINS output:
      https://gist.github.com/mbnoimi/154b31a77a079c45bbdd63d4c1cfe3bc

      raven-worxR Offline
      raven-worxR Offline
      raven-worx
      Moderators
      wrote on last edited by
      #10

      @mbnoimi
      so something is wrong with your psql binaries.

      Maybe a mismatch between x86 and x64?

      --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
      If you have a question please use the forum so others can benefit from the solution in the future

      M 1 Reply Last reply
      0
      • raven-worxR raven-worx

        @mbnoimi
        so something is wrong with your psql binaries.

        Maybe a mismatch between x86 and x64?

        M Offline
        M Offline
        mbnoimi
        wrote on last edited by
        #11

        @raven-worx

        Maybe a mismatch between x86 and x64?

        To be of mismatching between x86 and x64 I did:

        1. Uninstalled postgres-9.3.4-4-windows-x64
        2. installed postgres-9.3.13-windows
        3. Copied runtime of postgres-9.3.13-windows beside my Qt app

        I get same error message!!!

        Now I'm pretty sure this problem is related to Qt SQL plugin so I'll try to build it by myself (I'll send the result after finish it)

        raven-worxR 1 Reply Last reply
        0
        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #12

          Hi,

          Did you check that you have a MinGW build of PostgreSQL ?

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

          M 1 Reply Last reply
          0
          • SGaistS SGaist

            Hi,

            Did you check that you have a MinGW build of PostgreSQL ?

            M Offline
            M Offline
            mbnoimi
            wrote on last edited by
            #13

            @SGaist Usually Postgresql guys don't use MinGW so their binaries built using MSVS

            1 Reply Last reply
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            • M mbnoimi

              @raven-worx

              Maybe a mismatch between x86 and x64?

              To be of mismatching between x86 and x64 I did:

              1. Uninstalled postgres-9.3.4-4-windows-x64
              2. installed postgres-9.3.13-windows
              3. Copied runtime of postgres-9.3.13-windows beside my Qt app

              I get same error message!!!

              Now I'm pretty sure this problem is related to Qt SQL plugin so I'll try to build it by myself (I'll send the result after finish it)

              raven-worxR Offline
              raven-worxR Offline
              raven-worx
              Moderators
              wrote on last edited by
              #14

              @mbnoimi said:

              Now I'm pretty sure this problem is related to Qt SQL plugin so I'll try to build it by myself (I'll send the result after finish it)

              I don't know what makes you think that but try it if you want to.

              What is the content of your PATH env variable? Is there a reference to the psql install dir?

              --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
              If you have a question please use the forum so others can benefit from the solution in the future

              1 Reply Last reply
              0
              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #15

                Hence your problem: you are currently using the MinGW build of Qt, so unless you have a MinGW version of PostgreSQL your only option is to use a MSVC build of Qt matching the version used by PostgreSQL.

                In any case, the PostgreSQL folks have provided a wiki page about MinGW here.

                Hope it helps

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

                raven-worxR M 3 Replies Last reply
                1
                • SGaistS SGaist

                  Hence your problem: you are currently using the MinGW build of Qt, so unless you have a MinGW version of PostgreSQL your only option is to use a MSVC build of Qt matching the version used by PostgreSQL.

                  In any case, the PostgreSQL folks have provided a wiki page about MinGW here.

                  Hope it helps

                  raven-worxR Offline
                  raven-worxR Offline
                  raven-worx
                  Moderators
                  wrote on last edited by
                  #16

                  @SGaist
                  that makes sense of course.
                  One would expect that the Postgresql devs would export the symbols using "C-style" to avoid such problems?!

                  --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
                  If you have a question please use the forum so others can benefit from the solution in the future

                  1 Reply Last reply
                  1
                  • SGaistS SGaist

                    Hence your problem: you are currently using the MinGW build of Qt, so unless you have a MinGW version of PostgreSQL your only option is to use a MSVC build of Qt matching the version used by PostgreSQL.

                    In any case, the PostgreSQL folks have provided a wiki page about MinGW here.

                    Hope it helps

                    M Offline
                    M Offline
                    mbnoimi
                    wrote on last edited by
                    #17

                    @SGaist Do you know any binaries of PG built by MinGW?

                    1 Reply Last reply
                    0
                    • SGaistS SGaist

                      Hence your problem: you are currently using the MinGW build of Qt, so unless you have a MinGW version of PostgreSQL your only option is to use a MSVC build of Qt matching the version used by PostgreSQL.

                      In any case, the PostgreSQL folks have provided a wiki page about MinGW here.

                      Hope it helps

                      M Offline
                      M Offline
                      mbnoimi
                      wrote on last edited by
                      #18

                      Thank you very much @SGaist and @raven-worx for helping me out. I fixed this issue by using runtime libraries from this project:
                      https://sourceforge.net/projects/postgresql-mingw-w64/

                      1 Reply Last reply
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