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How to find MQTT examples

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  • L Offline
    L Offline
    lukutis222
    wrote on last edited by lukutis222
    #1

    Hello. I would like to learn about MQTT. I try to look for some example projects but cannot find any. I use QT 6.5

    c9c5d8e4-1626-4b93-9ec2-197b95f100e7-image.png

    I tried looking at the Qt maintenance tool but cannot seem to find MQTT component (library).

    aaed9791-965a-43c4-a240-9b1bf3f16b84-image.png

    I appreciate if someone coild clarify to me how can I access the MQTT example projects and try them out myself. Thanks in advance.

    SGaistS 1 Reply Last reply
    0
    • L lukutis222

      Hello. I would like to learn about MQTT. I try to look for some example projects but cannot find any. I use QT 6.5

      c9c5d8e4-1626-4b93-9ec2-197b95f100e7-image.png

      I tried looking at the Qt maintenance tool but cannot seem to find MQTT component (library).

      aaed9791-965a-43c4-a240-9b1bf3f16b84-image.png

      I appreciate if someone coild clarify to me how can I access the MQTT example projects and try them out myself. Thanks in advance.

      SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      The most simple would be to clone the module sources.

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

      L 1 Reply Last reply
      1
      • SGaistS SGaist

        Hi,

        The most simple would be to clone the module sources.

        L Offline
        L Offline
        lukutis222
        wrote on last edited by lukutis222
        #3

        @SGaist

        Thanks for the response but I was not able to do it succesfully. It is worth mentioning that I am using open source version of QT. Why is it not available as an example project like other examples? It would be so much easier.

        Anyways, im trying to figure out how to get it working:

        1. I have managed to clone to the whole repository:
        510928a3-53b8-4be1-b4a4-ac0247060c14-image.png

        I go to examples->mqtt->simpleclient->simpleclient.pro

        I tried to build the example project but got many errors:
        31bacbb2-88ea-4807-9d1e-434b92196626-image.png

        It does not seem to find mqtt module. Not to sure how to get it to build.

        2. I have decided to simplify things and start a brand new project

        In my project.pro file, I have added network and mqtt modules:

        QT       += core gui network mqtt
        
        greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
        
        INSTALLS += target
        
        CONFIG += c++17
        
        # You can make your code fail to compile if it uses deprecated APIs.
        # In order to do so, uncomment the following line.
        #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
        
        SOURCES += \
            main.cpp \
            mainwindow.cpp
        
        HEADERS += \
            mainwindow.h
        
        FORMS += \
            mainwindow.ui
        
        # Default rules for deployment.
        qnx: target.path = /tmp/$${TARGET}/bin
        else: unix:!android: target.path = /opt/$${TARGET}/bin
        !isEmpty(target.path): INSTALLS += target
        
        

        When I try to build it, it says that the mqtt module is missing:

        47b763cb-f5e0-4569-b5fb-a4cf3f4588be-image.png

        In the repository that I have downloaded earlierI have found the following folder:

        qtmqtt\src\mqtt
        

        e7c869b7-edd9-4b34-b929-3b51775649e2-image.png

        I assume this folder contains all the mqtt code and I must import it to my project somehow. I pasted this whole src directory into my project folder:

        e291daf9-1b44-4707-9169-76ba9f57dd54-image.png

        But I am not sure how to configure my project to include this library. Any ideas?

        It would be cool to simplify running MQTT projects as it is not very straightforward for begginners.

        I also had a look at:

        C:/Qt/6.5.0/mingw_64/include 
        

        And could not find mqtt component there. Any way to add it to the include folder of my Qt?

        Thanks in advance for any advice!

        SGaistS 1 Reply Last reply
        0
        • L lukutis222

          @SGaist

          Thanks for the response but I was not able to do it succesfully. It is worth mentioning that I am using open source version of QT. Why is it not available as an example project like other examples? It would be so much easier.

          Anyways, im trying to figure out how to get it working:

          1. I have managed to clone to the whole repository:
          510928a3-53b8-4be1-b4a4-ac0247060c14-image.png

          I go to examples->mqtt->simpleclient->simpleclient.pro

          I tried to build the example project but got many errors:
          31bacbb2-88ea-4807-9d1e-434b92196626-image.png

          It does not seem to find mqtt module. Not to sure how to get it to build.

          2. I have decided to simplify things and start a brand new project

          In my project.pro file, I have added network and mqtt modules:

          QT       += core gui network mqtt
          
          greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
          
          INSTALLS += target
          
          CONFIG += c++17
          
          # You can make your code fail to compile if it uses deprecated APIs.
          # In order to do so, uncomment the following line.
          #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
          
          SOURCES += \
              main.cpp \
              mainwindow.cpp
          
          HEADERS += \
              mainwindow.h
          
          FORMS += \
              mainwindow.ui
          
          # Default rules for deployment.
          qnx: target.path = /tmp/$${TARGET}/bin
          else: unix:!android: target.path = /opt/$${TARGET}/bin
          !isEmpty(target.path): INSTALLS += target
          
          

          When I try to build it, it says that the mqtt module is missing:

          47b763cb-f5e0-4569-b5fb-a4cf3f4588be-image.png

          In the repository that I have downloaded earlierI have found the following folder:

          qtmqtt\src\mqtt
          

          e7c869b7-edd9-4b34-b929-3b51775649e2-image.png

          I assume this folder contains all the mqtt code and I must import it to my project somehow. I pasted this whole src directory into my project folder:

          e291daf9-1b44-4707-9169-76ba9f57dd54-image.png

          But I am not sure how to configure my project to include this library. Any ideas?

          It would be cool to simplify running MQTT projects as it is not very straightforward for begginners.

          I also had a look at:

          C:/Qt/6.5.0/mingw_64/include 
          

          And could not find mqtt component there. Any way to add it to the include folder of my Qt?

          Thanks in advance for any advice!

          SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #4

          You need to build and install the module before you can use it.

          You can do that from Qt Creator (requires an additional step for the install).

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

          L 1 Reply Last reply
          1
          • SGaistS SGaist

            You need to build and install the module before you can use it.

            You can do that from Qt Creator (requires an additional step for the install).

            L Offline
            L Offline
            lukutis222
            wrote on last edited by
            #5

            @SGaist
            Oh okay.
            Would you be able to provide more information on that? How can I do this?

            SGaistS 1 Reply Last reply
            0
            • L lukutis222

              @SGaist
              Oh okay.
              Would you be able to provide more information on that? How can I do this?

              SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #6

              There is not much more to it than what I wrote:

              Open the top level CMakeLists.txt of the module with Qt Creator and use the Qt version you want to develop with to build the module.

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

              L 1 Reply Last reply
              0
              • SGaistS SGaist

                There is not much more to it than what I wrote:

                Open the top level CMakeLists.txt of the module with Qt Creator and use the Qt version you want to develop with to build the module.

                L Offline
                L Offline
                lukutis222
                wrote on last edited by lukutis222
                #7

                @SGaist

                Thanks for the help but that does not seem to be as straightforward as you say.

                I tried to open and build the top level CMakeLists.txt but there are errors.
                0e14a676-9629-47a6-84fd-dbe4a991ab5a-image.png

                I am currently looking into how to solve this cmake issue.

                jsulmJ 1 Reply Last reply
                0
                • L lukutis222

                  @SGaist

                  Thanks for the help but that does not seem to be as straightforward as you say.

                  I tried to open and build the top level CMakeLists.txt but there are errors.
                  0e14a676-9629-47a6-84fd-dbe4a991ab5a-image.png

                  I am currently looking into how to solve this cmake issue.

                  jsulmJ Offline
                  jsulmJ Offline
                  jsulm
                  Lifetime Qt Champion
                  wrote on last edited by
                  #8

                  @lukutis222 You are apparently on the dev branch, checkout the branch corresponding to your Qt version.

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

                  L 1 Reply Last reply
                  1
                  • jsulmJ jsulm

                    @lukutis222 You are apparently on the dev branch, checkout the branch corresponding to your Qt version.

                    L Offline
                    L Offline
                    lukutis222
                    wrote on last edited by lukutis222
                    #9

                    @jsulm

                    Well spotted sir!

                    After I checked out to required branch with command:

                    git checkout 6.5.0
                    

                    I have managed to build it:

                    16:51:17: Running steps for project QtMqtt...
                    16:51:17: Starting: "C:\Qt\Tools\CMake_64\bin\cmake.exe" --build C:/Users/Lukas/Desktop/Programming/QT/MQTT/build-qtmqtt-Desktop_Qt_6_5_0_MinGW_64_bit-Debug --target all
                    ninja: no work to do.
                    16:51:17: The process "C:\Qt\Tools\CMake_64\bin\cmake.exe" exited normally.
                    16:51:17: Elapsed time: 00:00.
                    

                    I have now this build folder containing all the files:

                    f7174b5f-651e-4890-8d26-1e3f60e011be-image.png

                    I assume the next step after building the module is to install it. I am looking into how this can be done at the moment

                    Additionally, I tried something else:

                    TEST#1
                    I found this stackoverflow thread:
                    https://stackoverflow.com/questions/66367858/install-mqtt-module-in-open-source-qt

                    It seems that there is some additional steps missing as this suggestion also does not seem to work:

                    C:\Users\Lukas>cd C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt
                    
                    C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt>qmake
                    Usage: qmake [mode] [options] [files]
                    
                    QMake has two modes, one mode for generating project files based on
                    some heuristics, and the other for generating makefiles. Normally you
                    shouldn't need to specify a mode, as makefile generation is the default
                    mode for qmake, but you may use this to test qmake on an existing project
                    
                    Mode:
                      -project       Put qmake into project file generation mode
                                     In this mode qmake interprets [files] as files to
                                     be added to the .pro file. By default, all files with
                                     known source extensions are added.
                                     Note: The created .pro file probably will
                                     need to be edited. For example add the QT variable to
                                     specify what modules are required.
                      -makefile      Put qmake into makefile generation mode (default)
                                     In this mode qmake interprets files as project files to
                                     be processed, if skipped qmake will try to find a project
                                     file in your current working directory
                    
                    Warnings Options:
                      -Wnone         Turn off all warnings; specific ones may be re-enabled by
                                     later -W options
                      -Wall          Turn on all warnings
                      -Wparser       Turn on parser warnings
                      -Wlogic        Turn on logic warnings (on by default)
                      -Wdeprecated   Turn on deprecation warnings (on by default)
                    
                    Options:
                       * You can place any variable assignment in options and it will be *
                       * processed as if it was in [files]. These assignments will be    *
                       * processed before [files] by default.                            *
                      -o file        Write output to file
                      -d             Increase debug level
                      -t templ       Overrides TEMPLATE as templ
                      -tp prefix     Overrides TEMPLATE so that prefix is prefixed into the value
                      -help          This help
                      -v             Version information
                      -early         All subsequent variable assignments will be
                                     parsed right before default_pre.prf
                      -before        All subsequent variable assignments will be
                                     parsed right before [files] (the default)
                      -after         All subsequent variable assignments will be
                                     parsed after [files]
                      -late          All subsequent variable assignments will be
                                     parsed right after default_post.prf
                      -norecursive   Don't do a recursive search
                      -recursive     Do a recursive search
                      -set <prop> <value> Set persistent property
                      -unset <prop>  Unset persistent property
                      -query <prop>  Query persistent property. Show all if <prop> is empty.
                      -qtconf file   Use file instead of looking for qt6.conf, then qt.conf
                      -cache file    Use file as cache           [makefile mode only]
                      -spec spec     Use spec as QMAKESPEC       [makefile mode only]
                      -nocache       Don't use a cache file      [makefile mode only]
                      -nodepend      Don't generate dependencies [makefile mode only]
                      -nomoc         Don't generate moc targets  [makefile mode only]
                      -nopwd         Don't look for files in pwd [project mode only]
                    
                    C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt>make
                    make: *** No targets specified and no makefile found.  Stop.
                    
                    C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt>make install
                    make: *** No rule to make target `install'.  Stop.
                    
                    C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt>
                    

                    TEST#2

                    I tried to follow this video:
                    https://www.youtube.com/watch?v=DGB0GfFRqPo&ab_channel=EmbeddedLaboratory

                    But also failed:

                    C:\Users\Lukas>cd C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt\build
                    
                    C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt\build>C:\Qt\Tools\CMake_64\bin\cmake --build .
                    Error: could not load cache
                    
                    C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt\build>C:\Qt\6.5.0\mingw_64\bin\qt-configure-module ..
                    'C:\Qt\6.5.0\mingw_64\bin\\qt-cmake-private.bat' '..'
                    CMake Error: CMake was unable to find a build program corresponding to "Ninja".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
                    CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
                    CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
                    -- Configuring incomplete, errors occurred!
                    See also "C:/Users/Lukas/Desktop/Programming/QT/MQTT/qtmqtt/build/CMakeFiles/CMakeOutput.log".
                    CMake Error at C:/Qt/6.5.0/mingw_64/lib/cmake/Qt6/QtProcessConfigureArgs.cmake:994 (message):
                      CMake exited with code 1.
                    
                    
                    
                    C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt\build>C:\Qt\6.5.0\mingw_64\bin\qt-configure-module ..
                    'C:\Qt\6.5.0\mingw_64\bin\\qt-cmake-private.bat' '..'
                    CMake Error: CMake was unable to find a build program corresponding to "Ninja".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
                    CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
                    CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
                    -- Configuring incomplete, errors occurred!
                    See also "C:/Users/Lukas/Desktop/Programming/QT/MQTT/qtmqtt/build/CMakeFiles/CMakeOutput.log".
                    CMake Error at C:/Qt/6.5.0/mingw_64/lib/cmake/Qt6/QtProcessConfigureArgs.cmake:994 (message):
                      CMake exited with code 1.
                    
                    SGaistS 1 Reply Last reply
                    0
                    • L lukutis222

                      @jsulm

                      Well spotted sir!

                      After I checked out to required branch with command:

                      git checkout 6.5.0
                      

                      I have managed to build it:

                      16:51:17: Running steps for project QtMqtt...
                      16:51:17: Starting: "C:\Qt\Tools\CMake_64\bin\cmake.exe" --build C:/Users/Lukas/Desktop/Programming/QT/MQTT/build-qtmqtt-Desktop_Qt_6_5_0_MinGW_64_bit-Debug --target all
                      ninja: no work to do.
                      16:51:17: The process "C:\Qt\Tools\CMake_64\bin\cmake.exe" exited normally.
                      16:51:17: Elapsed time: 00:00.
                      

                      I have now this build folder containing all the files:

                      f7174b5f-651e-4890-8d26-1e3f60e011be-image.png

                      I assume the next step after building the module is to install it. I am looking into how this can be done at the moment

                      Additionally, I tried something else:

                      TEST#1
                      I found this stackoverflow thread:
                      https://stackoverflow.com/questions/66367858/install-mqtt-module-in-open-source-qt

                      It seems that there is some additional steps missing as this suggestion also does not seem to work:

                      C:\Users\Lukas>cd C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt
                      
                      C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt>qmake
                      Usage: qmake [mode] [options] [files]
                      
                      QMake has two modes, one mode for generating project files based on
                      some heuristics, and the other for generating makefiles. Normally you
                      shouldn't need to specify a mode, as makefile generation is the default
                      mode for qmake, but you may use this to test qmake on an existing project
                      
                      Mode:
                        -project       Put qmake into project file generation mode
                                       In this mode qmake interprets [files] as files to
                                       be added to the .pro file. By default, all files with
                                       known source extensions are added.
                                       Note: The created .pro file probably will
                                       need to be edited. For example add the QT variable to
                                       specify what modules are required.
                        -makefile      Put qmake into makefile generation mode (default)
                                       In this mode qmake interprets files as project files to
                                       be processed, if skipped qmake will try to find a project
                                       file in your current working directory
                      
                      Warnings Options:
                        -Wnone         Turn off all warnings; specific ones may be re-enabled by
                                       later -W options
                        -Wall          Turn on all warnings
                        -Wparser       Turn on parser warnings
                        -Wlogic        Turn on logic warnings (on by default)
                        -Wdeprecated   Turn on deprecation warnings (on by default)
                      
                      Options:
                         * You can place any variable assignment in options and it will be *
                         * processed as if it was in [files]. These assignments will be    *
                         * processed before [files] by default.                            *
                        -o file        Write output to file
                        -d             Increase debug level
                        -t templ       Overrides TEMPLATE as templ
                        -tp prefix     Overrides TEMPLATE so that prefix is prefixed into the value
                        -help          This help
                        -v             Version information
                        -early         All subsequent variable assignments will be
                                       parsed right before default_pre.prf
                        -before        All subsequent variable assignments will be
                                       parsed right before [files] (the default)
                        -after         All subsequent variable assignments will be
                                       parsed after [files]
                        -late          All subsequent variable assignments will be
                                       parsed right after default_post.prf
                        -norecursive   Don't do a recursive search
                        -recursive     Do a recursive search
                        -set <prop> <value> Set persistent property
                        -unset <prop>  Unset persistent property
                        -query <prop>  Query persistent property. Show all if <prop> is empty.
                        -qtconf file   Use file instead of looking for qt6.conf, then qt.conf
                        -cache file    Use file as cache           [makefile mode only]
                        -spec spec     Use spec as QMAKESPEC       [makefile mode only]
                        -nocache       Don't use a cache file      [makefile mode only]
                        -nodepend      Don't generate dependencies [makefile mode only]
                        -nomoc         Don't generate moc targets  [makefile mode only]
                        -nopwd         Don't look for files in pwd [project mode only]
                      
                      C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt>make
                      make: *** No targets specified and no makefile found.  Stop.
                      
                      C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt>make install
                      make: *** No rule to make target `install'.  Stop.
                      
                      C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt>
                      

                      TEST#2

                      I tried to follow this video:
                      https://www.youtube.com/watch?v=DGB0GfFRqPo&ab_channel=EmbeddedLaboratory

                      But also failed:

                      C:\Users\Lukas>cd C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt\build
                      
                      C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt\build>C:\Qt\Tools\CMake_64\bin\cmake --build .
                      Error: could not load cache
                      
                      C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt\build>C:\Qt\6.5.0\mingw_64\bin\qt-configure-module ..
                      'C:\Qt\6.5.0\mingw_64\bin\\qt-cmake-private.bat' '..'
                      CMake Error: CMake was unable to find a build program corresponding to "Ninja".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
                      CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
                      CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
                      -- Configuring incomplete, errors occurred!
                      See also "C:/Users/Lukas/Desktop/Programming/QT/MQTT/qtmqtt/build/CMakeFiles/CMakeOutput.log".
                      CMake Error at C:/Qt/6.5.0/mingw_64/lib/cmake/Qt6/QtProcessConfigureArgs.cmake:994 (message):
                        CMake exited with code 1.
                      
                      
                      
                      C:\Users\Lukas\Desktop\Programming\QT\MQTT\qtmqtt\build>C:\Qt\6.5.0\mingw_64\bin\qt-configure-module ..
                      'C:\Qt\6.5.0\mingw_64\bin\\qt-cmake-private.bat' '..'
                      CMake Error: CMake was unable to find a build program corresponding to "Ninja".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
                      CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
                      CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
                      -- Configuring incomplete, errors occurred!
                      See also "C:/Users/Lukas/Desktop/Programming/QT/MQTT/qtmqtt/build/CMakeFiles/CMakeOutput.log".
                      CMake Error at C:/Qt/6.5.0/mingw_64/lib/cmake/Qt6/QtProcessConfigureArgs.cmake:994 (message):
                        CMake exited with code 1.
                      
                      SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #10

                      If you want to install from the command line, go to the build folder.

                      As for the cmake issue, use the ˋqt-cmake ` wrapper found in the bin folder of the 6.5.0 installation,

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

                      L 1 Reply Last reply
                      0
                      • SGaistS SGaist

                        If you want to install from the command line, go to the build folder.

                        As for the cmake issue, use the ˋqt-cmake ` wrapper found in the bin folder of the 6.5.0 installation,

                        L Offline
                        L Offline
                        lukutis222
                        wrote on last edited by lukutis222
                        #11

                        @SGaist
                        Its a little bit more confusing as there is probably more than 1 method of doing this. It would be probably better to stick to a single method ( the one that we initially started maybe ) as I am a little bit overwhelmed by complexity of building and installing mqtt module.

                        Please lets go a step backwards and continue from where we left initially.
                        So now that I managed to build the top level project after i checked out to the correct branch and I have the following build folder:

                        build-qtmqtt-Desktop_Qt_6_5_0_MinGW_64_bit-Debug
                        

                        Would you be able to provide further instructions as I didint manage to find any relevant information on youtube/stackoverflow or qt forums on what would be the next step.

                        After I figure this all out, il be sure to provide detailed step by step instructions on how to build and install this mqtt module for dummies as it is way too complex as it currently is.

                        SGaistS 1 Reply Last reply
                        0
                        • L lukutis222

                          @SGaist
                          Its a little bit more confusing as there is probably more than 1 method of doing this. It would be probably better to stick to a single method ( the one that we initially started maybe ) as I am a little bit overwhelmed by complexity of building and installing mqtt module.

                          Please lets go a step backwards and continue from where we left initially.
                          So now that I managed to build the top level project after i checked out to the correct branch and I have the following build folder:

                          build-qtmqtt-Desktop_Qt_6_5_0_MinGW_64_bit-Debug
                          

                          Would you be able to provide further instructions as I didint manage to find any relevant information on youtube/stackoverflow or qt forums on what would be the next step.

                          After I figure this all out, il be sure to provide detailed step by step instructions on how to build and install this mqtt module for dummies as it is way too complex as it currently is.

                          SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by SGaist
                          #12

                          Check the bottom right part of this image of this stack overflow post

                          alt text

                          Just add that step and it should install the module.

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

                          L 2 Replies Last reply
                          0
                          • SGaistS SGaist

                            Check the bottom right part of this image of this stack overflow post

                            alt text

                            Just add that step and it should install the module.

                            L Offline
                            L Offline
                            lukutis222
                            wrote on last edited by lukutis222
                            #13

                            @SGaist

                            I go into Projects , then under Build Steps I have tried to "Custom process step"

                            9818eb18-a42b-4fcb-bec1-042dac6485fb-image.png

                            Then I provide the following command and argument:

                            01873afc-7f3a-4539-9fd6-646601cd9f9a-image.png

                            I get the following error when trying to build the project:

                            make: *** No rule to make target `install'.  Stop.
                            15:01:39: The process "C:\Program Files (x86)\GnuWin32\bin\make.exe" exited with code 2.
                            Error while building/deploying project QtMqtt (kit: Desktop Qt 6.5.0 MinGW 64-bit)
                            When executing step "Custom Process Step"
                            15:01:39: Elapsed time: 00:00.
                            
                            

                            I also noticed that it complains about working directory:
                            72b90f93-be76-4652-af90-6bc275cc7144-image.png

                            I tried to replace it with build directory as shown below but still with little luck
                            879798b7-4246-4c2d-9bcc-aa9756621b25-image.png

                            Perhaps you know an easy method on how to setup mqtt using command line? I dont mind using command line if that is easier for you.

                            1 Reply Last reply
                            0
                            • SGaistS SGaist

                              Check the bottom right part of this image of this stack overflow post

                              alt text

                              Just add that step and it should install the module.

                              L Offline
                              L Offline
                              lukutis222
                              wrote on last edited by lukutis222
                              #14

                              @SGaist

                              UPDATE

                              I have been experimenting with Build Steps and figured something out:

                              c5c7523f-03ef-4755-bc73-81931868a0f8-image.png

                              I have added another cmake build step and just ticked "install" Target" (See image below):
                              44bcf9a9-9476-46c1-8383-87fad0422b7a-image.png

                              After building the project, I can confirm that the MQTT module has been installed. If I go to

                              C:\Qt\6.5.0\mingw_64\modules
                              

                              I can see mqtt.json module in the folder.

                              I can now build MQTT examples! Thank you for helping me out!

                              Just out of curiosity - Do you have any ideas why this process hasnt been automated yet by QT Creator? Why is it not possible to simply run mqtt projects like any other project from the example projects? Why can I not download the MQTT module via the Maintenance tool? Why do we need to go through all the extra steps to get it running? Surely it would be more convenient and simple?

                              SGaistS 1 Reply Last reply
                              0
                              • L lukutis222

                                @SGaist

                                UPDATE

                                I have been experimenting with Build Steps and figured something out:

                                c5c7523f-03ef-4755-bc73-81931868a0f8-image.png

                                I have added another cmake build step and just ticked "install" Target" (See image below):
                                44bcf9a9-9476-46c1-8383-87fad0422b7a-image.png

                                After building the project, I can confirm that the MQTT module has been installed. If I go to

                                C:\Qt\6.5.0\mingw_64\modules
                                

                                I can see mqtt.json module in the folder.

                                I can now build MQTT examples! Thank you for helping me out!

                                Just out of curiosity - Do you have any ideas why this process hasnt been automated yet by QT Creator? Why is it not possible to simply run mqtt projects like any other project from the example projects? Why can I not download the MQTT module via the Maintenance tool? Why do we need to go through all the extra steps to get it running? Surely it would be more convenient and simple?

                                SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #15

                                @lukutis222 AFAIK, pre-built binaries for that module are available for commercial license holder.

                                As for Qt Creator, most likely because Qt Creator is way younger than Qt itself and has likely not yet been used as much as other means to develop Qt. Note that having for example the qtbase completely loaded in an IDE is a pretty intensive task which might not even be doable due to the sheer size of the module.

                                However, additional documentation on that matter would be something good.

                                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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