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how to add library(qmqtt.h) in qmqtt client for windows

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  • S shravani

    @raven-worx
    thank you,
    im new to qt could you please tell me how to execute qmake and mingw32-make in windows?

    raven-worxR Offline
    raven-worxR Offline
    raven-worx
    Moderators
    wrote on last edited by raven-worx
    #19

    @shravani
    open a console window and execute "qmake" let it finished and afterwards execute one of the two (the correct one corresponding to your used compiler!) make commands for building.

    Make sure that the executable can be found by the system (add the paths to the PATH environment variable)
    But those a pretty basics. Probably you should go on reading some learning material first before trying to build a software which is based on a 3rd party library.

    --- 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

    S 1 Reply Last reply
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    • raven-worxR raven-worx

      @shravani
      open a console window and execute "qmake" let it finished and afterwards execute one of the two (the correct one corresponding to your used compiler!) make commands for building.

      Make sure that the executable can be found by the system (add the paths to the PATH environment variable)
      But those a pretty basics. Probably you should go on reading some learning material first before trying to build a software which is based on a 3rd party library.

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      shravani
      wrote on last edited by shravani
      #20

      @raven-worx
      can u give any link to read? and where .lib will be created? in same folder?

      raven-worxR 1 Reply Last reply
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      • S shravani

        @raven-worx
        can u give any link to read? and where .lib will be created? in same folder?

        raven-worxR Offline
        raven-worxR Offline
        raven-worx
        Moderators
        wrote on last edited by
        #21

        @shravani
        Getting started.
        Probably you should consider buying a book about Qt also

        --- 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

        S 1 Reply Last reply
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        • raven-worxR raven-worx

          @shravani
          Getting started.
          Probably you should consider buying a book about Qt also

          S Offline
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          shravani
          wrote on last edited by
          #22

          @raven-worx
          but using qtcreator also, run qmake is possible right?why am i not getting .lib file file?can you see screenshots of my debug folder (above)after building.

          raven-worxR 1 Reply Last reply
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          • S shravani

            @raven-worx
            but using qtcreator also, run qmake is possible right?why am i not getting .lib file file?can you see screenshots of my debug folder (above)after building.

            raven-worxR Offline
            raven-worxR Offline
            raven-worx
            Moderators
            wrote on last edited by
            #23

            @shravani
            yes, but especially when you are not completley sure what you are doing there are some pitfalls.
            You can try to build using QtCreator, but then do not press the Run/Debug button, but the Build button below.

            --- 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

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            • raven-worxR raven-worx

              @shravani
              yes, but especially when you are not completley sure what you are doing there are some pitfalls.
              You can try to build using QtCreator, but then do not press the Run/Debug button, but the Build button below.

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              shravani
              wrote on last edited by shravani
              #24

              @raven-worx
              hi,
              after building i came to know qmqtt.lib was created(5th line from last).but i could not find it inorder to add that path to .pro file.can u please tell by default where it will be stored? in build/debug also it is not present(see above post).

              thank you

              0_1498707021202_build_log.PNG

              raven-worxR 1 Reply Last reply
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              • dheerendraD Offline
                dheerendraD Offline
                dheerendra
                Qt Champions 2022
                wrote on last edited by
                #25

                Most easiest way is to hit windows search button, search that file and find that directory. Specify this directory in pro file.

                Dheerendra
                @Community Service
                Certified Qt Specialist
                http://www.pthinks.com

                1 Reply Last reply
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                • S shravani

                  @raven-worx
                  hi,
                  after building i came to know qmqtt.lib was created(5th line from last).but i could not find it inorder to add that path to .pro file.can u please tell by default where it will be stored? in build/debug also it is not present(see above post).

                  thank you

                  0_1498707021202_build_log.PNG

                  raven-worxR Offline
                  raven-worxR Offline
                  raven-worx
                  Moderators
                  wrote on last edited by
                  #26

                  @shravani
                  according to this log in the \bin directory.

                  --- 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

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                  • raven-worxR raven-worx

                    @shravani
                    according to this log in the \bin directory.

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                    shravani
                    wrote on last edited by shravani
                    #27

                    @raven-worx
                    thank you very much. now i added that .lib file to .pro file and build all is successful.but as the program start executing im getting this error while debugging.can u please look into it?
                    i dont understand which dll file is missing and where to add it?

                    0_1498793774462_Capture.PNG

                    jsulmJ 1 Reply Last reply
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                    • S shravani

                      @raven-worx
                      thank you very much. now i added that .lib file to .pro file and build all is successful.but as the program start executing im getting this error while debugging.can u please look into it?
                      i dont understand which dll file is missing and where to add it?

                      0_1498793774462_Capture.PNG

                      jsulmJ Offline
                      jsulmJ Offline
                      jsulm
                      Lifetime Qt Champion
                      wrote on last edited by
                      #28

                      @shravani How do you start the app? From QtCreator?
                      On Windows you can use http://www.dependencywalker.com/ to find out which libraries an application needs.
                      If you want to start your app outside of QtCreator then you first need to deploy it: http://doc.qt.io/qt-5/windows-deployment.html

                      https://forum.qt.io/topic/113070/qt-code-of-conduct

                      S 1 Reply Last reply
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                      • jsulmJ jsulm

                        @shravani How do you start the app? From QtCreator?
                        On Windows you can use http://www.dependencywalker.com/ to find out which libraries an application needs.
                        If you want to start your app outside of QtCreator then you first need to deploy it: http://doc.qt.io/qt-5/windows-deployment.html

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                        shravani
                        wrote on last edited by
                        #29

                        @jsulm

                        im running it in qtcreator, not outside.inside qt also do i need to include?

                        jsulmJ 1 Reply Last reply
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                        • S shravani

                          @jsulm

                          im running it in qtcreator, not outside.inside qt also do i need to include?

                          jsulmJ Offline
                          jsulmJ Offline
                          jsulm
                          Lifetime Qt Champion
                          wrote on last edited by
                          #30

                          @shravani In QtCreator it should work. Use http://www.dependencywalker.com to see what is missing.
                          Besides the lib file - do you have the DLL? Lib file is needed for linking, but DLL is needed at runtime.
                          Also can you show how you added the lib to pro file?

                          https://forum.qt.io/topic/113070/qt-code-of-conduct

                          S 1 Reply Last reply
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                          • jsulmJ jsulm

                            @shravani In QtCreator it should work. Use http://www.dependencywalker.com to see what is missing.
                            Besides the lib file - do you have the DLL? Lib file is needed for linking, but DLL is needed at runtime.
                            Also can you show how you added the lib to pro file?

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                            shravani
                            wrote on last edited by
                            #31

                            @jsulm
                            in this src/ qmqtt.h,.. and .lib files are there.so added that path.

                            INCLUDEPATH += C:\Qt\qmqtt-master\src
                            LIBS += -LC:\Qt\qmqtt-master\src -lqmqtt

                            jsulmJ 1 Reply Last reply
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                            • S shravani

                              @jsulm
                              in this src/ qmqtt.h,.. and .lib files are there.so added that path.

                              INCLUDEPATH += C:\Qt\qmqtt-master\src
                              LIBS += -LC:\Qt\qmqtt-master\src -lqmqtt

                              jsulmJ Offline
                              jsulmJ Offline
                              jsulm
                              Lifetime Qt Champion
                              wrote on last edited by
                              #32

                              @shravani
                              Again: you need the DLL file to be able to execute your app. Where is qmqtt.dll (or libqmqtt.dll)?

                              https://forum.qt.io/topic/113070/qt-code-of-conduct

                              S 1 Reply Last reply
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                              • jsulmJ jsulm

                                @shravani
                                Again: you need the DLL file to be able to execute your app. Where is qmqtt.dll (or libqmqtt.dll)?

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                                shravani
                                wrote on last edited by shravani
                                #33

                                @jsulm
                                it is inside src only.do i need to add anywhere else again?
                                after building library it created in /bin so i copied from there to src folder

                                jsulmJ 1 Reply Last reply
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                                • S shravani

                                  @jsulm
                                  it is inside src only.do i need to add anywhere else again?
                                  after building library it created in /bin so i copied from there to src folder

                                  jsulmJ Offline
                                  jsulmJ Offline
                                  jsulm
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #34

                                  @shravani The DLL must be in a directory where the operating system is looking for shared libraries when loading an app. Fastest way is to copy it to the build directory of your app (where your executable is).

                                  https://forum.qt.io/topic/113070/qt-code-of-conduct

                                  S 2 Replies Last reply
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                                  • jsulmJ jsulm

                                    @shravani The DLL must be in a directory where the operating system is looking for shared libraries when loading an app. Fastest way is to copy it to the build directory of your app (where your executable is).

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                                    shravani
                                    wrote on last edited by
                                    #35
                                    This post is deleted!
                                    1 Reply Last reply
                                    1
                                    • jsulmJ jsulm

                                      @shravani The DLL must be in a directory where the operating system is looking for shared libraries when loading an app. Fastest way is to copy it to the build directory of your app (where your executable is).

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                                      shravani
                                      wrote on last edited by
                                      #36

                                      @jsulm
                                      i added all dlls but now getting this error
                                      0_1498976658348_error.png

                                      1 Reply Last reply
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                                      • SGaistS Offline
                                        SGaistS Offline
                                        SGaist
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #37

                                        Hi,

                                        You can't start an application like that from explorer, you first have to follow the same steps you would before deploying your application on another computer.

                                        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
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                                        • SGaistS SGaist

                                          Hi,

                                          You can't start an application like that from explorer, you first have to follow the same steps you would before deploying your application on another computer.

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                                          shravani
                                          wrote on last edited by shravani
                                          #38

                                          @SGaist
                                          In Qt creator also I'm getting same error after adding ucrtbased.dll to debug folder.
                                          i tried executing examples given in qt but getting same error.
                                          recently i installed this qt 5.8.1 msvc2015 new version because in qt 5.0 it(mqtt) is not working.

                                          0_1499045791448_error2.png 0_1499045799223_path.png

                                          jsulmJ 1 Reply Last reply
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