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build QMYSQL driver under windows 10, a sample solution for QSqlDatabase: QMYSQL driver not loaded

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  • Christian EhrlicherC Christian Ehrlicher

    @hehedaozuiteng said in QMYSQL driver not loaded, how to get the qsqlmysql.dll for qt5.12.6 ?:

    I tried the following code on cmd, but nothing work.

    I'm giving up - you simply don't care about the instructions and don't show us what we need to show and what we suggest you to do... why do you think anything will work inside C:\Qt\5.12.6\mingw73_32\bin\ when you want to compile the sql driver? Did you make sure the incdir and libdir are containing the files mentioned in my (second) instruction link?

    H Offline
    H Offline
    hehedaozuiteng
    wrote on last edited by hehedaozuiteng
    #12

    @Christian-Ehrlicher
    Do not be mad man. I just not realize how to build sql-driver.
    the cmd does not running the qmake, I do not install qmake before I used it so I though I have to move to the where qmake.exe is.
    Now I am install the qmake, perhep this time work and reinstall the mysql. Mysql is combine into differents programs, I cannot find the include and "/lib/opt" folder in it.

    1 Reply Last reply
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    • Christian EhrlicherC Christian Ehrlicher

      @hehedaozuiteng said in QMYSQL driver not loaded, how to get the qsqlmysql.dll for qt5.12.6 ?:

      I tried the following code on cmd, but nothing work.

      I'm giving up - you simply don't care about the instructions and don't show us what we need to show and what we suggest you to do... why do you think anything will work inside C:\Qt\5.12.6\mingw73_32\bin\ when you want to compile the sql driver? Did you make sure the incdir and libdir are containing the files mentioned in my (second) instruction link?

      H Offline
      H Offline
      hehedaozuiteng
      wrote on last edited by hehedaozuiteng
      #13

      @Christian-Ehrlicher

      Can you tell me what is the file that include in the "incdir" and "libdir" folder ?
      I reinstalled the mysql, but cannot find the folder such as your described in instruction. Thank you very much.

      1 Reply Last reply
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      • T Offline
        T Offline
        thecodemonkey
        wrote on last edited by
        #14

        in the hope i can help someone: I provide various versions of qsqlmysql.dll here on Github

        H C C 3 Replies Last reply
        0
        • T thecodemonkey

          in the hope i can help someone: I provide various versions of qsqlmysql.dll here on Github

          H Offline
          H Offline
          hehedaozuiteng
          wrote on last edited by hehedaozuiteng
          #15

          @thecodemonkey
          Thank for you help anyway.
          I solved it two days ago. BTW, I do not think 32 bit vision is useful, ( if I am wrong please point out.) Mysql's serves is only offer 64 bit, so the libmysql.dll is also 64 bits. That is why I cannot build the drive at first 2 days lol.

          If someone like me do not know this, he will kill his two days beautiful life XD.

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          • M Offline
            M Offline
            Malibob
            wrote on last edited by
            #16

            When I run this "qmake -- MYSQL_INCDIR="%Mysql%/MySQL Server 8.0/include" MYSQL_LIBDIR="%Mysql%/MySQL Server 8.0/lib" " it's show me the message " 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 " How can i solve this?

            1 Reply Last reply
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            • T thecodemonkey

              in the hope i can help someone: I provide various versions of qsqlmysql.dll here on Github

              C Offline
              C Offline
              Camilo Quijano
              wrote on last edited by
              #17

              @thecodemonkey Thank you so much. Your files solved my problem.

              1 Reply Last reply
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              • terma.abaT Offline
                terma.abaT Offline
                terma.aba
                wrote on last edited by
                #18
                This post is deleted!
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                • T thecodemonkey

                  in the hope i can help someone: I provide various versions of qsqlmysql.dll here on Github

                  C Offline
                  C Offline
                  cpplegend
                  wrote on last edited by
                  #19

                  @thecodemonkey man I am using qt6.5.1, when I try to compile the driver it says that it doesn't recognize some lines of code when trying to build it... I am following this (the official qt documentation).. I think it doesn't find the mingw compiler.. I installed a new one but it does not work, it isn't recognized by the system also I'm using windows 11.. should I show you what are the errors? (I warn you, they are a lot)

                  jsulmJ 1 Reply Last reply
                  0
                  • C cpplegend

                    @thecodemonkey man I am using qt6.5.1, when I try to compile the driver it says that it doesn't recognize some lines of code when trying to build it... I am following this (the official qt documentation).. I think it doesn't find the mingw compiler.. I installed a new one but it does not work, it isn't recognized by the system also I'm using windows 11.. should I show you what are the errors? (I warn you, they are a lot)

                    jsulmJ Offline
                    jsulmJ Offline
                    jsulm
                    Lifetime Qt Champion
                    wrote on last edited by
                    #20

                    @cpplegend said in build QMYSQL driver under windows 10, a sample solution for QSqlDatabase: QMYSQL driver not loaded:

                    it isn't recognized by the system

                    If you want to build in a terminal on Windows then you should always use the terminal provided by Qt. If you installed Qt for MinGW you should have an entry in Windows Start menu to open the terminal preconfigured to use MinGW and Qt.

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

                    C 1 Reply Last reply
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                    • jsulmJ jsulm

                      @cpplegend said in build QMYSQL driver under windows 10, a sample solution for QSqlDatabase: QMYSQL driver not loaded:

                      it isn't recognized by the system

                      If you want to build in a terminal on Windows then you should always use the terminal provided by Qt. If you installed Qt for MinGW you should have an entry in Windows Start menu to open the terminal preconfigured to use MinGW and Qt.

                      C Offline
                      C Offline
                      cpplegend
                      wrote on last edited by
                      #21

                      @jsulm ok now I know I am stupid

                      jsulmJ 1 Reply Last reply
                      0
                      • C cpplegend

                        @jsulm ok now I know I am stupid

                        jsulmJ Offline
                        jsulmJ Offline
                        jsulm
                        Lifetime Qt Champion
                        wrote on last edited by
                        #22

                        @cpplegend No, there are always things one has to learn when doing something for the first time :-)

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

                        C 1 Reply Last reply
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                        • jsulmJ jsulm

                          @cpplegend No, there are always things one has to learn when doing something for the first time :-)

                          C Offline
                          C Offline
                          cpplegend
                          wrote on last edited by
                          #23

                          @jsulm thank you..
                          by the way it doesn't work

                          when I build it I get this:
                          [15/25] Building RC object mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                          FAILED: mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                          C:\Qt\Tools\mingw1120_64\bin\windres.exe -O coff -DMINGW_HAS_SECURE_API=1 -DQMYSQLDriverPlugin_EXPORTS -DQT_CORE_LIB -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_UP_TO=0x040800 -DQT_EXPLICIT_QFILE_CONSTRUCTION_FROM_PATH -DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_TO_ASCII -DQT_NO_DEBUG -DQT_NO_EXCEPTIONS -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_PLUGIN -DQT_SQL_LIB -DQT_WARN_DEPRECATED_UP_TO=0x070000 -DUNICODE -DWIN32 -DWIN64 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -D_UNICODE -D_WIN64 -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql/QMYSQLDriverPlugin_autogen/include -I C:/Qt/6.5.1/Src/qtbase/src/plugins/sqldrivers/mysql -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/include -I "C:/Program Files/MySQL/MySQL Connector C 6.1/include" -I C:/Qt/6.5.1/mingw_64/include/QtCore -I C:/Qt/6.5.1/mingw_64/include -I C:/Qt/6.5.1/mingw_64/mkspecs/win32-g++ -I C:/Qt/6.5.1/mingw_64/include/QtCore/6.5.1 -I C:/Qt/6.5.1/mingw_64/include/QtCore/6.5.1/QtCore -I C:/Qt/6.5.1/mingw_64/include/QtSql/6.5.1 -I C:/Qt/6.5.1/mingw_64/include/QtSql/6.5.1/QtSql -I C:/Qt/6.5.1/mingw_64/include/QtSql C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql/QMYSQLDriverPlugin_resource.rc mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                          cc1.exe: fatal error: Files/MySQL/MySQL: No such file or directory
                          compilation terminated.
                          cc1.exe: fatal error: Connector: No such file or directory
                          compilation terminated.
                          cc1.exe: fatal error: C: No such file or directory
                          compilation terminated.
                          cc1.exe: fatal error: 6.1/include: No such file or directory
                          compilation terminated.
                          C:\Qt\Tools\mingw1120_64\bin\windres.exe: preprocessing failed.
                          [22/25] Building C object sqlite/CMakeFiles/QSQLiteDriverPlugin.dir/C_/Qt/6.5.1/Src/qtbase/src/3rdparty/sqlite/sqlite3.c.obj
                          ninja: build stopped: subcommand failed.

                          jsulmJ 1 Reply Last reply
                          0
                          • C cpplegend

                            @jsulm thank you..
                            by the way it doesn't work

                            when I build it I get this:
                            [15/25] Building RC object mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                            FAILED: mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                            C:\Qt\Tools\mingw1120_64\bin\windres.exe -O coff -DMINGW_HAS_SECURE_API=1 -DQMYSQLDriverPlugin_EXPORTS -DQT_CORE_LIB -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_UP_TO=0x040800 -DQT_EXPLICIT_QFILE_CONSTRUCTION_FROM_PATH -DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_TO_ASCII -DQT_NO_DEBUG -DQT_NO_EXCEPTIONS -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_PLUGIN -DQT_SQL_LIB -DQT_WARN_DEPRECATED_UP_TO=0x070000 -DUNICODE -DWIN32 -DWIN64 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -D_UNICODE -D_WIN64 -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql/QMYSQLDriverPlugin_autogen/include -I C:/Qt/6.5.1/Src/qtbase/src/plugins/sqldrivers/mysql -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/include -I "C:/Program Files/MySQL/MySQL Connector C 6.1/include" -I C:/Qt/6.5.1/mingw_64/include/QtCore -I C:/Qt/6.5.1/mingw_64/include -I C:/Qt/6.5.1/mingw_64/mkspecs/win32-g++ -I C:/Qt/6.5.1/mingw_64/include/QtCore/6.5.1 -I C:/Qt/6.5.1/mingw_64/include/QtCore/6.5.1/QtCore -I C:/Qt/6.5.1/mingw_64/include/QtSql/6.5.1 -I C:/Qt/6.5.1/mingw_64/include/QtSql/6.5.1/QtSql -I C:/Qt/6.5.1/mingw_64/include/QtSql C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql/QMYSQLDriverPlugin_resource.rc mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                            cc1.exe: fatal error: Files/MySQL/MySQL: No such file or directory
                            compilation terminated.
                            cc1.exe: fatal error: Connector: No such file or directory
                            compilation terminated.
                            cc1.exe: fatal error: C: No such file or directory
                            compilation terminated.
                            cc1.exe: fatal error: 6.1/include: No such file or directory
                            compilation terminated.
                            C:\Qt\Tools\mingw1120_64\bin\windres.exe: preprocessing failed.
                            [22/25] Building C object sqlite/CMakeFiles/QSQLiteDriverPlugin.dir/C_/Qt/6.5.1/Src/qtbase/src/3rdparty/sqlite/sqlite3.c.obj
                            ninja: build stopped: subcommand failed.

                            jsulmJ Offline
                            jsulmJ Offline
                            jsulm
                            Lifetime Qt Champion
                            wrote on last edited by
                            #24

                            @cpplegend said in build QMYSQL driver under windows 10, a sample solution for QSqlDatabase: QMYSQL driver not loaded:

                            cc1.exe: fatal error: Files/MySQL/MySQL: No such file or directory

                            You have paths with spaces which are often problematic, just like in this case.
                            Install the MySQL client lib in a folder without spaces.

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

                            C 1 Reply Last reply
                            0
                            • jsulmJ jsulm

                              @cpplegend said in build QMYSQL driver under windows 10, a sample solution for QSqlDatabase: QMYSQL driver not loaded:

                              cc1.exe: fatal error: Files/MySQL/MySQL: No such file or directory

                              You have paths with spaces which are often problematic, just like in this case.
                              Install the MySQL client lib in a folder without spaces.

                              C Offline
                              C Offline
                              cpplegend
                              wrote on last edited by
                              #25

                              @jsulm it still doesn't work, it's another error now: [15/25] Building RC object mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                              FAILED: mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                              C:\Qt\Tools\mingw1120_64\bin\windres.exe -O coff -DMINGW_HAS_SECURE_API=1 -DQMYSQLDriverPlugin_EXPORTS -DQT_CORE_LIB -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_UP_TO=0x040800 -DQT_EXPLICIT_QFILE_CONSTRUCTION_FROM_PATH -DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_TO_ASCII -DQT_NO_DEBUG -DQT_NO_EXCEPTIONS -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_PLUGIN -DQT_SQL_LIB -DQT_WARN_DEPRECATED_UP_TO=0x070000 -DUNICODE -DWIN32 -DWIN64 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -D_UNICODE -D_WIN64 -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql/QMYSQLDriverPlugin_autogen/include -I C:/Qt/6.5.1/Src/qtbase/src/plugins/sqldrivers/mysql -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/include -I "C:/Program Files/MySQL/MySQL_ConnectorC6.1/include" -I C:/Qt/6.5.1/mingw_64/include/QtCore -I C:/Qt/6.5.1/mingw_64/include -I C:/Qt/6.5.1/mingw_64/mkspecs/win32-g++ -I C:/Qt/6.5.1/mingw_64/include/QtCore/6.5.1 -I C:/Qt/6.5.1/mingw_64/include/QtCore/6.5.1/QtCore -I C:/Qt/6.5.1/mingw_64/include/QtSql/6.5.1 -I C:/Qt/6.5.1/mingw_64/include/QtSql/6.5.1/QtSql -I C:/Qt/6.5.1/mingw_64/include/QtSql C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql/QMYSQLDriverPlugin_resource.rc mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                              cc1.exe: fatal error: Files/MySQL/MySQL_ConnectorC6.1/include: No such file or directory
                              compilation terminated.
                              C:\Qt\Tools\mingw1120_64\bin\windres.exe: preprocessing failed.
                              [22/25] Building C object sqlite/CMakeFiles/QSQLiteDriverPlugin.dir/C_/Qt/6.5.1/Src/qtbase/src/3rdparty/sqlite/sqlite3.c.obj
                              ninja: build stopped: subcommand failed.

                              jsulmJ 1 Reply Last reply
                              0
                              • C cpplegend

                                @jsulm it still doesn't work, it's another error now: [15/25] Building RC object mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                                FAILED: mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                                C:\Qt\Tools\mingw1120_64\bin\windres.exe -O coff -DMINGW_HAS_SECURE_API=1 -DQMYSQLDriverPlugin_EXPORTS -DQT_CORE_LIB -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_UP_TO=0x040800 -DQT_EXPLICIT_QFILE_CONSTRUCTION_FROM_PATH -DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_TO_ASCII -DQT_NO_DEBUG -DQT_NO_EXCEPTIONS -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_PLUGIN -DQT_SQL_LIB -DQT_WARN_DEPRECATED_UP_TO=0x070000 -DUNICODE -DWIN32 -DWIN64 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -D_UNICODE -D_WIN64 -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql/QMYSQLDriverPlugin_autogen/include -I C:/Qt/6.5.1/Src/qtbase/src/plugins/sqldrivers/mysql -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql -I C:/Qt/6.5.1/mingw_64/build-sqldrivers/include -I "C:/Program Files/MySQL/MySQL_ConnectorC6.1/include" -I C:/Qt/6.5.1/mingw_64/include/QtCore -I C:/Qt/6.5.1/mingw_64/include -I C:/Qt/6.5.1/mingw_64/mkspecs/win32-g++ -I C:/Qt/6.5.1/mingw_64/include/QtCore/6.5.1 -I C:/Qt/6.5.1/mingw_64/include/QtCore/6.5.1/QtCore -I C:/Qt/6.5.1/mingw_64/include/QtSql/6.5.1 -I C:/Qt/6.5.1/mingw_64/include/QtSql/6.5.1/QtSql -I C:/Qt/6.5.1/mingw_64/include/QtSql C:/Qt/6.5.1/mingw_64/build-sqldrivers/mysql/QMYSQLDriverPlugin_resource.rc mysql/CMakeFiles/QMYSQLDriverPlugin.dir/QMYSQLDriverPlugin_resource.rc.obj
                                cc1.exe: fatal error: Files/MySQL/MySQL_ConnectorC6.1/include: No such file or directory
                                compilation terminated.
                                C:\Qt\Tools\mingw1120_64\bin\windres.exe: preprocessing failed.
                                [22/25] Building C object sqlite/CMakeFiles/QSQLiteDriverPlugin.dir/C_/Qt/6.5.1/Src/qtbase/src/3rdparty/sqlite/sqlite3.c.obj
                                ninja: build stopped: subcommand failed.

                                jsulmJ Offline
                                jsulmJ Offline
                                jsulm
                                Lifetime Qt Champion
                                wrote on last edited by
                                #26

                                @cpplegend said in build QMYSQL driver under windows 10, a sample solution for QSqlDatabase: QMYSQL driver not loaded:

                                it's another error now

                                It's same type of error - you have spaces in your paths.
                                Did you install the client library in a path without spaces?
                                If so then please start from clean build folder.

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

                                1 Reply Last reply
                                0
                                • hskoglundH Online
                                  hskoglundH Online
                                  hskoglund
                                  wrote on last edited by hskoglund
                                  #27

                                  Just want to confirm @jsulm is correct, I see a space here:
                                  -I "C:/Program Files/MySQL/MySQL_ConnectorC6.1/include" -

                                  C 1 Reply Last reply
                                  0
                                  • hskoglundH hskoglund

                                    Just want to confirm @jsulm is correct, I see a space here:
                                    -I "C:/Program Files/MySQL/MySQL_ConnectorC6.1/include" -

                                    C Offline
                                    C Offline
                                    cpplegend
                                    wrote on last edited by cpplegend
                                    #28

                                    @hskoglund lol program files hahahhaha haven't seen it, because I am italian the name was "programmi" without any space, thank you by the way

                                    jsulmJ 1 Reply Last reply
                                    0
                                    • C cpplegend

                                      @hskoglund lol program files hahahhaha haven't seen it, because I am italian the name was "programmi" without any space, thank you by the way

                                      jsulmJ Offline
                                      jsulmJ Offline
                                      jsulm
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #29

                                      @cpplegend said in build QMYSQL driver under windows 10, a sample solution for QSqlDatabase: QMYSQL driver not loaded:

                                      because I am italian the name was "programmi"

                                      Yes, Windows tries to hide things from the user :-)

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

                                      C 1 Reply Last reply
                                      0
                                      • jsulmJ jsulm

                                        @cpplegend said in build QMYSQL driver under windows 10, a sample solution for QSqlDatabase: QMYSQL driver not loaded:

                                        because I am italian the name was "programmi"

                                        Yes, Windows tries to hide things from the user :-)

                                        C Offline
                                        C Offline
                                        cpplegend
                                        wrote on last edited by cpplegend
                                        #30

                                        @jsulm yeah... now it worked thank you I am so happy, I have been trying to build this driver for 4 days, now it worked and I have the build, now it should work or I have to do anything else? because I tried to instantiate a connection to a database in mysql and it doesn't work, it still says Driver not loaded.

                                        jsulmJ 1 Reply Last reply
                                        0
                                        • C cpplegend

                                          @jsulm yeah... now it worked thank you I am so happy, I have been trying to build this driver for 4 days, now it worked and I have the build, now it should work or I have to do anything else? because I tried to instantiate a connection to a database in mysql and it doesn't work, it still says Driver not loaded.

                                          jsulmJ Offline
                                          jsulmJ Offline
                                          jsulm
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #31

                                          @cpplegend Did you also did "make install" step?
                                          To debug plug-in problems you can set QT_DEBUG_PLUGINS variable before running the app and check the output. See https://doc.qt.io/qt-6/debug.html
                                          My guess is that the MySQL client library cannot be found. I'm not sure, but I think you need to copy it to same location as the plug-in.

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

                                          C 2 Replies Last reply
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