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How to create the plugin of MYSQL for Qt

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #10

    Hi both,

    Like written in the post, these instructions are for Windows. Linux and OS X are far less problematic. On OS X install mysql through e.g. macports with sudo port install mysql56 and on Linux, install the mysql dev packages.

    For the rest just follow Qt's Sql Driver documentation

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

    1 Reply Last reply
    4
    • K Offline
      K Offline
      kshots
      wrote on last edited by
      #11

      I recently ran into an issue with mysql (mariadb) in a linux environment - apparently, the 5.3.1 release ties to an older version of mysql that my system no longer supports (apparently, qt-5.3.1-release wants version .16, while my system uses .18). If you have this problem, an ldd of /path/to/qt5/plugins/sqldrivers/libqsqlmysql.so should show that it can't find your mysql libs. To fix this, go into the source directory at qtbase/src/plugins/sqldrivers/mysql, run qmake (specifically for 5.3.1, not the system qmake), and then make install.

      1 Reply Last reply
      0
      • A Offline
        A Offline
        arsinte_andrei
        wrote on last edited by
        #12

        Even today Qt doesn't have a MySql proper plugin delivered with? any way.. thanks for this great job... that save me a lot of trouble I wish to do something similar with HeidiSql and this was a good start point.. Thanks again

        1 Reply Last reply
        0
        • B Offline
          B Offline
          BlackStar
          wrote on last edited by
          #13

          You're all welcome :), for the guys who are asking for linux or Os X, but i don't know :(, try to fetch the doc.

          1 Reply Last reply
          1
          • D Offline
            D Offline
            danny36
            wrote on last edited by
            #14

            Hello, I'm new to QT and I have installed QT from this installer on Windows 7 64bit:
            qt-opensource-windows-x86-1.6.0-5-online.exe

            but I don't see the src folder and I don't have a QT Sdk. How can I install the sdk? thanks.

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

              Hi and welcome to devnet,

              You need to first install the sources. Use the installer for that

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

              1 Reply Last reply
              0
              • D Offline
                D Offline
                danny36
                wrote on last edited by
                #16

                OK now I have installed the sources (maybe) and I have a folder called Src, this is my path: C:\Qt\5.3\Src.

                I try to follow the tutorial but in my situation when prompt "reimp libmysql.dll" I receive this message:

                "reimp: libmysql.dll: invalid or corrupt import library"

                but if prompt "reimp libmysql.lib" seems to work.

                1 Reply Last reply
                0
                • D Offline
                  D Offline
                  danny36
                  wrote on last edited by
                  #17

                  now I'm arrived to step 5 but I think I have some problem, this is the ouput after lunch the command:

                  configure.exe -debug-and-release -platform win32-g++ -qt-sql-mysql -l mysql -I C:\mysql\include -L C:\mysql\lib

                  Creating qmake...
                  mingw32-make: Nothing to be done for 'first'.
                  Running configuration tests...
                  g++: error: CreateProcess: No such file or directory
                  mingw32-make: *** [arch.o] Error 1
                  Could not find output file: No such file or directory
                  WARNING: The DirectX SDK could not be detected:
                  There is no Direct X SDK installed or the environment variable "DXSDK_DIR" is
                  not set.
                  Disabling the ANGLE backend.

                  WARNING: Using OpenGL ES 2.0 without ANGLE.
                  Specify -opengl desktop to use Open GL.
                  The build will most likely fail.

                  1 Reply Last reply
                  0
                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #18

                    Either install the Direct X SDK or pass -opengl desktop to configure

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

                    1 Reply Last reply
                    0
                    • D Offline
                      D Offline
                      danny36
                      wrote on last edited by
                      #19

                      I'm sorry and frustrated but
                      but unfortunately for me it is the first time with C++ and QT.
                      I lunch configure:

                      configure.exe -opengl desktop

                      and the result is:

                      g++ -c -o qlibraryinfo.o -DUNICODE -ffunction-sections -g -IC:\Qt\5.3\Src\qtbas
                      e/qmake -IC:\Qt\5.3\Src\qtbase/qmake/library -IC:\Qt\5.3\Src\qtbase/qmake/genera
                      tors -IC:\Qt\5.3\Src\qtbase/qmake/generators/unix -IC:\Qt\5.3\Src\qtbase/qmake/g
                      enerators/win32 -IC:\Qt\5.3\Src\qtbase/qmake/generators/mac -IC:\Qt\5.3\Src\qtba
                      se/qmake/generators/integrity -IC:\Qt\5.3\Src\qtbase\include -IC:\Qt\5.3\Src\qtb
                      ase\include/QtCore -IC:\Qt\5.3\Src\qtbase\include/QtCore/5.3.2 -IC:\Qt\5.3\Src\q
                      tbase\include/QtCore/5.3.2/QtCore -IC:\Qt\5.3\Src\qtbase/src/corelib/global -DHA
                      VE_QCONFIG_CPP -IC:\Qt\5.3\Src\qtbase\mkspecs\win32-g++ -IC:\Qt\5.3\Src\qtbase/t
                      ools/shared -DQT_BUILD_QMAKE -DQT_BOOTSTRAPPED -DPROEVALUATOR_FULL -DQT_NO_TEXTC
                      ODEC -DQT_NO_UNICODETABLES -DQT_NO_COMPONENT -DQT_NO_COMPRESS -DQT_NO_THREAD -DQ
                      T_NO_QOBJECT -DQT_NO_GEOM_VARIANT -DQT_NO_DATASTREAM -DQT_CRYPTOGRAPHICHASH_ONLY
                      SHA1 -DQT_JSON_READONLY C:\Qt\5.3\Src\qtbase/src/corelib/global/qlibraryinfo.cp
                      p
                      g++: error: CreateProcess: No such file or directory
                      Makefile:275: recipe for target 'qlibraryinfo.o' failed
                      mingw32-make: *** [qlibraryinfo.o] Error 1
                      rm -f project.o option.o property.o main.o ioutils.o proitems.o qmakevfs.o qmake
                      globals.o qmakeparser.o qmakeevaluator.o qmakebuiltins.o makefile.o unixmake2.o
                      unixmake.o mingw_make.o winmakefile.o projectgenerator.o meta.o makefiledeps.o m
                      etamakefile.o xmloutput.o pbuilder_pbx.o msvc_vcproj.o msvc_vcxproj.o msvc_nmake
                      .o msvc_objectmodel.o msbuild_objectmodel.o gbuild.o cesdkhandler.o qtextcodec.o
                      qutfcodec.o qstring.o qstring_compat.o qstringbuilder.o qtextstream.o qiodevice
                      .o qmalloc.o qglobal.o qarraydata.o qbytearray.o qbytearraymatcher.o qdatastream
                      .o qbuffer.o qlist.o qfiledevice.o qfile.o qfilesystementry.o qfilesystemengine.
                      o qfsfileengine.o qfsfileengine_iterator.o qregexp.o qvector.o qbitarray.o qdir.
                      o qdiriterator.o quuid.o qhash.o qfileinfo.o qdatetime.o qstringlist.o qabstract
                      fileengine.o qtemporaryfile.o qmap.o qmetatype.o qsettings.o qsystemerror.o qlib
                      raryinfo.o qvariant.o qvsnprintf.o qlocale.o qlocale_tools.o qlinkedlist.o qnume
                      ric.o qcryptographichash.o qxmlstream.o qxmlutils.o qlogging.o qjson.o qjsondocument.o qjsonparser.o qjsonarray.o qjsonobject.o qjsonvalue.o qfilesystemengine_w
                      in.o qfilesystemiterator_win.o qfsfileengine_win.o qlocale_win.o qsettings_win.o
                      qsystemlibrary.o registry.o
                      g++ -c -o project.o -DUNICODE -ffunction-sections -g -IC:\Qt\5.3\Src\qtbase/qma
                      ke -IC:\Qt\5.3\Src\qtbase/qmake/library -IC:\Qt\5.3\Src\qtbase/qmake/generators
                      -IC:\Qt\5.3\Src\qtbase/qmake/generators/unix -IC:\Qt\5.3\Src\qtbase/qmake/genera
                      tors/win32 -IC:\Qt\5.3\Src\qtbase/qmake/generators/mac -IC:\Qt\5.3\Src\qtbase/qm
                      ake/generators/integrity -IC:\Qt\5.3\Src\qtbase\include -IC:\Qt\5.3\Src\qtbase\i
                      nclude/QtCore -IC:\Qt\5.3\Src\qtbase\include/QtCore/5.3.2 -IC:\Qt\5.3\Src\qtbase
                      \include/QtCore/5.3.2/QtCore -IC:\Qt\5.3\Src\qtbase/src/corelib/global -DHAVE_QC
                      ONFIG_CPP -IC:\Qt\5.3\Src\qtbase\mkspecs\win32-g++ -IC:\Qt\5.3\Src\qtbase/tools/
                      shared -DQT_BUILD_QMAKE -DQT_BOOTSTRAPPED -DPROEVALUATOR_FULL -DQT_NO_TEXTCODEC
                      -DQT_NO_UNICODETABLES -DQT_NO_COMPONENT -DQT_NO_COMPRESS -DQT_NO_THREAD -DQT_NO

                      QOBJECT -DQT_NO_GEOM_VARIANT -DQT_NO_DATASTREAM -DQT_CRYPTOGRAPHICHASH_ONLY_SHA1
                      -DQT_JSON_READONLY C:\Qt\5.3\Src\qtbase/qmake/project.cpp
                      g++: error: CreateProcess:* No such file or directory*
                      Makefile:196: recipe for target 'project.o' failed
                      mingw32-make: *** [project.o] Error 1
                      Building qmake failed, return code 2

                      1 Reply Last reply
                      1
                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #20

                        Just one question, do you only need to build the MySQL plugin ? If so, there's no need to rebuild Qt completely

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

                        1 Reply Last reply
                        0
                        • D Offline
                          D Offline
                          danny36
                          wrote on last edited by
                          #21

                          This is the first time for me with C++ and QT so for me it's all new and I do not know what are the requirements needed to achieve my goal.
                          I want to make a windows application that keep some signal from a RFID antenna attached to notebook from serial and store data in a mysql database.
                          To start I want only to connect to mysql database and read a table data.

                          So I guess I need only mysql plugin.

                          1 Reply Last reply
                          0
                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #22

                            Then just compile the MySQL plugin like described in the documentation, no need to rebuild everything.

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

                            1 Reply Last reply
                            0
                            • K Offline
                              K Offline
                              kambokdol
                              wrote on last edited by
                              #23

                              @
                              case "re":
                              include("$folderPath_php/write.php");
                              break;
                              case "re_ok":
                              include("$folderPath_php/write_ok.php");
                              break;
                              case "del":
                              include("$folderPath_php/del_ok.php");
                              break;
                              case "all_del_ok":
                              include("$folderPath_php/all_del_ok.php");
                              break;
                              case "all_move_ok":
                              include("$folderPath_php/all_move_ok.php");
                              break;
                              default:
                              include("$folderPath_php/list.php");
                              break;
                              @

                              1 Reply Last reply
                              -1
                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #24

                                What does that message have to do with the current question ?

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

                                1 Reply Last reply
                                0
                                • M Offline
                                  M Offline
                                  masum
                                  wrote on last edited by
                                  #25

                                  what about other platform?

                                  Kind Regards

                                  Md. Rashidul Hasan
                                  Software Architect
                                  OnnoRokom Software Ltd.
                                  Cell: 8801836885252

                                  1 Reply Last reply
                                  -1
                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #26

                                    Can you be more specific ?

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

                                    1 Reply Last reply
                                    0
                                    • D Offline
                                      D Offline
                                      danny36
                                      wrote on last edited by
                                      #27

                                      Hi all,

                                      after trying to build mysql plugin now I cannot to compile a simple hello world project, the error is:

                                      g++: error: CreateProcess: No such file or directory

                                      this is my debugger output:

                                      @11:46:35: Running steps for project CEV-Crono...
                                      11:46:35: Configuration unchanged, skipping qmake step.
                                      11:46:35: Starting: "C:\Qt\5.3\mingw482_32\bin\mingw32-make.exe"
                                      C:/Qt/5.3/mingw482_32/bin/mingw32-make -f Makefile.Debug
                                      mingw32-make[1]: Entering directory 'F:/WORKSPACE/CPP/build-CEV-Crono-Desktop_Qt_5_3_MinGW_32bit-Debug'
                                      g++ -c -pipe -fno-keep-inline-dllexport -g -frtti -Wall -Wextra -fexceptions -mthreads -DUNICODE -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_NEEDS_QMAIN -I..\CEV-Crono -I"C:\Qt\5.3\mingw482_32\include" -I"C:\Qt\5.3\mingw482_32\include\QtWidgets" -I"C:\Qt\5.3\mingw482_32\include\QtGui" -I"C:\Qt\5.3\mingw482_32\include\QtCore" -I"debug" -I"." -I"." -I"C:\Qt\5.3\mingw482_32\mkspecs\win32-g++" -o debug\main.o ..\CEV-Crono\main.cpp
                                      g++: error: CreateProcess: No such file or directory
                                      Makefile.Debug:341: recipe for target 'debug/main.o' failed
                                      mingw32-make[1]: *** [debug/main.o] Error 1
                                      mingw32-make[1]: Leaving directory 'F:/WORKSPACE/CPP/build-CEV-Crono-Desktop_Qt_5_3_MinGW_32bit-Debug'
                                      Makefile:34: recipe for target 'debug' failed
                                      mingw32-make: *** [debug] Error 2
                                      11:46:35: The process "C:\Qt\5.3\mingw482_32\bin\mingw32-make.exe" exited with code 2.
                                      Error while building/deploying project CEV-Crono (kit: Desktop Qt 5.3 MinGW 32bit)
                                      When executing step "Make"
                                      11:46:35: Elapsed time: 00:01.@

                                      1 Reply Last reply
                                      0
                                      • R Offline
                                        R Offline
                                        root0x
                                        wrote on last edited by
                                        #28

                                        That would of been useful about 2 months ago, but thanks for posting it

                                        1 Reply Last reply
                                        0
                                        • B Offline
                                          B Offline
                                          BlackStar
                                          wrote on last edited by
                                          #29

                                          I m sorry for not being able to reply ^^ cause i ve moved to the web development world for a moment, thus i have forgotten about this post! anyway the instructions i did were for Windows, but i never tried the other platforms tough :/ sorry! @massum, and a big thanks to @SGaist ^^

                                          1 Reply Last reply
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