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Cant connect to mysql database: QMYSQL driver not loaded

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  • GuapoG Offline
    GuapoG Offline
    Guapo
    wrote on last edited by
    #2

    Hi, I think you need to build your mysql driver to use it.

    Here there is how could you build this driver
    http://doc.qt.io/qt-5/sql-driver.html

    or Look this video:
    https://www.youtube.com/watch?v=r1TbNjJSlX8

    []s

    1 Reply Last reply
    2
    • C Offline
      C Offline
      cdwijs
      wrote on last edited by
      #3

      Thanks Guapo,

      I have watched the video, but I did not succeed yet.
      I have run the maintenance tool, and added QT5.11.1-source.

      In the video, the file c:\qtSDK\4.8.1\src\plugins\sqldrivers\mysql\mysql.pro is used.
      On my system it has moved to here: C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\mysql\mysql.pro
      When I open the .pro file, I get the following messages:
      Cannot read C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/qtsqldrivers-config.pri: No such file or directory
      Project ERROR: Project has no top-level .qmake.conf file.
      Error while parsing file C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\mysql\mysql.pro. Giving up.
      Cannot read C:/qtsqldrivers-config.pri: No such file or directory
      Cannot read /mkspecs/modules-inst/qt_plugin_qsqlmysql.pri: No such file or directory
      C:/Qt/5.11.1/mingw53_32/mkspecs/features/qt_plugin.prf(81): Variable QT_PLUGINS is not defined.
      Project ERROR: Library 'mysql' is not defined.

      I don't have the file qtsqldrivers-config.pri anywhere below c:\qt.

      What can I do/check next?

      Cheers,
      Cedric

      1 Reply Last reply
      0
      • C Offline
        C Offline
        cdwijs
        wrote on last edited by
        #4

        Hi All,

        I am trying to follow the instructions here, but I'm not successful yet. Configure reports MySql .................................. no

        I have taken the following steps:
        1)Add C:\Qt\Tools\mingw530_32\bin and C:\Qt\5.11.1\mingw53_32\bin to the path
        2)Open cmd.exe, and enter the following commands:

        cd c:\qt\5.11.1\Src\qtbase\src\plugins\sqldrivers
        c:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers>qmake -- MYSQL_INCDIR="c:\Program Files\MySQL\Connector C++ 1.1\lib\opt"
        
        Running configuration tests...
        Checking for DB2 (IBM)... no
        Checking for InterBase... no
        Checking for MySQL... no
        Checking for OCI (Oracle)... no
        Checking for ODBC... yes
        Checking for PostgreSQL... no
        Checking for SQLite (version 2)... no
        Checking for TDS (Sybase)... no
        Done running configuration tests.
        
        Configure summary:
        
        Qt Sql:
          DB2 (IBM) .............................. no
          InterBase .............................. no
          MySql .................................. no
          OCI (Oracle) ........................... no
          ODBC ................................... yes
          PostgreSQL ............................. no
          SQLite2 ................................ no
          SQLite ................................. yes
            Using system provided SQLite ......... no
          TDS (Sybase) ........................... no
        
        Qt is now configured for building. Just run 'mingw32-make'.
        Once everything is built, Qt is installed.
        You should NOT run 'mingw32-make install'.
        Note that this build cannot be deployed to other machines or devices.
        Prior to reconfiguration, make sure you remove any leftovers from the previous build.
        c:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers>
        

        What did I miss?
        Cheers,
        Cedric

        1 Reply Last reply
        0
        • C Offline
          C Offline
          cdwijs
          wrote on last edited by
          #5

          hi All,

          I also have installed the "MySQL Connector C 6.1", but configure still does not see mySQL:

          c:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers>qmake -- MYSQL_INCDIR="c:\Program
           Files\MySQL\MySQL Connector C 6.1\lib"
          
          Running configuration tests...
          Done running configuration tests.
          
          Configure summary:
          
          Qt Sql:
            DB2 (IBM) .............................. no
            InterBase .............................. no
            MySql .................................. no
            OCI (Oracle) ........................... no
            ODBC ................................... yes
            PostgreSQL ............................. no
            SQLite2 ................................ no
            SQLite ................................. yes
              Using system provided SQLite ......... no
            TDS (Sybase) ........................... no
          
          Qt is now configured for building. Just run 'mingw32-make'.
          Once everything is built, Qt is installed.
          You should NOT run 'mingw32-make install'.
          Note that this build cannot be deployed to other machines or devices.
          
          Prior to reconfiguration, make sure you remove any leftovers from
          the previous build.
          
          
          c:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers>qmake -- MYSQL_INCDIR="c:\Program
           Files\MySQL\MySQL Connector C 6.1\lib"
          Info: creating stash file C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\.qmake.
          stash
          
          Running configuration tests...
          Checking for DB2 (IBM)... no
          Checking for InterBase... no
          Checking for MySQL... no
          Checking for OCI (Oracle)... no
          Checking for ODBC... yes
          Checking for PostgreSQL... no
          Checking for SQLite (version 2)... no
          Checking for TDS (Sybase)... no
          Done running configuration tests.
          
          Configure summary:
          
          Qt Sql:
            DB2 (IBM) .............................. no
            InterBase .............................. no
            MySql .................................. no
            OCI (Oracle) ........................... no
            ODBC ................................... yes
            PostgreSQL ............................. no
            SQLite2 ................................ no
            SQLite ................................. yes
              Using system provided SQLite ......... no
            TDS (Sybase) ........................... no
          
          Qt is now configured for building. Just run 'mingw32-make'.
          Once everything is built, Qt is installed.
          You should NOT run 'mingw32-make install'.
          Note that this build cannot be deployed to other machines or devices.
          
          Prior to reconfiguration, make sure you remove any leftovers from
          the previous build.
          
          
          c:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers>
          

          Cheers,
          Cedric

          1 Reply Last reply
          0
          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #6

            Hi,

            Did you check that your MySQL Connector is built for 32bit ?

            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
            1
            • C Offline
              C Offline
              cdwijs
              wrote on last edited by
              #7

              Hi Sgaist,

              My further experiments:
              I have downloaded the 32 bit C connector:https://downloads.mysql.com/archives/get/file/mysql-connector-c-6.1.11-win32.msi and installed it. Now I have this directory:
              C:\Program Files (x86)\MySQL\MySQL Connector C 6.1\lib
              Due to the location it installed into, I'm confident that it's indeed 32 bits. So here we go again :-) I deleted all the generated files from C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers

              C:\Users\cedric>cd c:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers
              c:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers>qmake -- MYSQL_INCDIR="c:\Program Files (x86)\MySQL\MySQL Connector C 6.1\lib"
              
              Running configuration tests...
              Checking for DB2 (IBM)... no
              Checking for InterBase... no
              Checking for MySQL... no
              Checking for OCI (Oracle)... no
              Checking for ODBC... yes
              Checking for PostgreSQL... no
              Checking for SQLite (version 2)... no
              Checking for TDS (Sybase)... no
              Done running configuration tests.
              

              My config.log:

              Command line: "MYSQL_INCDIR=c:\Program Files (x86)\MySQL\MySQL Connector C 6.1\lib"
              looking for library db2
              Trying source 0 (type inline) of library db2 ...
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\db2 && C:\Qt\5.11.1\mingw53_32\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_LIBDIR += C:\\openssl\\lib C:\\Utils\\my_sql\\mysql-5.6.11-win32\\lib C:\\Utils\\postgresql\\pgsql\\lib" "INCLUDEPATH += C:\\openssl\\include C:\\Utils\\my_sql\\mysql-5.6.11-win32\\include C:\\Utils\\postgresql\\pgsql\\include" "LIBS += -ldb2cli" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/db2
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\db2 && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make
              > del main.o
              > Could Not Find C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\db2\main.o
              > g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-win32\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\5.11.1\mingw53_32\mkspecs\win32-g++  -o main.o main.cpp
              > main.cpp:2:20: fatal error: sqlcli.h: No such file or directory
              > compilation terminated.
              > Makefile:415: recipe for target 'main.o' failed
              > mingw32-make: *** [main.o] Error 1
               => source failed verification.
              Trying source 1 (type inline) of library db2 ...
                => source failed condition '!config.win32'.
              test config.sqldrivers.libraries.db2 FAILED
              looking for library ibase
              Trying source 0 (type inline) of library ibase ...
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\ibase && C:\Qt\5.11.1\mingw53_32\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_LIBDIR += C:\\openssl\\lib C:\\Utils\\my_sql\\mysql-5.6.11-win32\\lib C:\\Utils\\postgresql\\pgsql\\lib" "INCLUDEPATH += C:\\openssl\\include C:\\Utils\\my_sql\\mysql-5.6.11-win32\\include C:\\Utils\\postgresql\\pgsql\\include" "LIBS += -lgds32_ms" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/ibase
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\ibase && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make
              > del main.o
              > Could Not Find C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\ibase\main.o
              > g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-win32\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\5.11.1\mingw53_32\mkspecs\win32-g++  -o main.o main.cpp
              > main.cpp:2:19: fatal error: ibase.h: No such file or directory
              > compilation terminated.
              > Makefile:415: recipe for target 'main.o' failed
              > mingw32-make: *** [main.o] Error 1
               => source failed verification.
              Trying source 1 (type inline) of library ibase ...
                => source failed condition '!config.win32'.
              test config.sqldrivers.libraries.ibase FAILED
              looking for library mysql
              Trying source 0 (type mysqlConfig) of library mysql ...
              mysql_config not found.
                => source produced no result.
              Trying source 1 (type mysqlConfig) of library mysql ...
              mysql_config not found.
                => source produced no result.
              Trying source 2 (type mysqlConfig) of library mysql ...
              mysql_config not found.
                => source produced no result.
              Trying source 3 (type mysqlConfig) of library mysql ...
              mysql_config not found.
                => source produced no result.
              Trying source 4 (type inline) of library mysql ...
                => source failed condition '!config.win32'.
              Trying source 5 (type inline) of library mysql ...
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\mysql && C:\Qt\5.11.1\mingw53_32\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_LIBDIR += C:\\openssl\\lib C:\\Utils\\my_sql\\mysql-5.6.11-win32\\lib C:\\Utils\\postgresql\\pgsql\\lib" "INCLUDEPATH += C:\\openssl\\include C:\\Utils\\my_sql\\mysql-5.6.11-win32\\include C:\\Utils\\postgresql\\pgsql\\include" "LIBS += -llibmysql" "INCLUDEPATH *= \"c:\\Program Files ^(x86^)\\MySQL\\MySQL Connector C 6.1\\lib\"" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/mysql
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\mysql && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make
              > del main.o
              > Could Not Find C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\mysql\main.o
              > g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-win32\include -IC:\Utils\postgresql\pgsql\include -I"c:\Program Files (x86)\MySQL\MySQL Connector C 6.1\lib" -IC:\Qt\5.11.1\mingw53_32\mkspecs\win32-g++  -o main.o main.cpp
              > main.cpp:5:19: fatal error: mysql.h: No such file or directory
              > compilation terminated.
              > Makefile:415: recipe for target 'main.o' failed
              > mingw32-make: *** [main.o] Error 1
               => source failed verification.
              Trying source 6 (type inline) of library mysql ...
                => source failed condition '!config.win32'.
              test config.sqldrivers.libraries.mysql FAILED
              looking for library oci
              Trying source 0 (type inline) of library oci ...
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\oci && C:\Qt\5.11.1\mingw53_32\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_LIBDIR += C:\\openssl\\lib C:\\Utils\\my_sql\\mysql-5.6.11-win32\\lib C:\\Utils\\postgresql\\pgsql\\lib" "INCLUDEPATH += C:\\openssl\\include C:\\Utils\\my_sql\\mysql-5.6.11-win32\\include C:\\Utils\\postgresql\\pgsql\\include" "LIBS += -loci" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/oci
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\oci && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make
              > del main.o
              > Could Not Find C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\oci\main.o
              > g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-win32\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\5.11.1\mingw53_32\mkspecs\win32-g++  -o main.o main.cpp
              > main.cpp:2:17: fatal error: oci.h: No such file or directory
              > compilation terminated.
              > Makefile:415: recipe for target 'main.o' failed
              > mingw32-make: *** [main.o] Error 1
               => source failed verification.
              Trying source 1 (type inline) of library oci ...
                => source failed condition '!config.win32'.
              test config.sqldrivers.libraries.oci FAILED
              looking for library odbc
              Trying source 0 (type inline) of library odbc ...
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\odbc && C:\Qt\5.11.1\mingw53_32\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_LIBDIR += C:\\openssl\\lib C:\\Utils\\my_sql\\mysql-5.6.11-win32\\lib C:\\Utils\\postgresql\\pgsql\\lib" "INCLUDEPATH += C:\\openssl\\include C:\\Utils\\my_sql\\mysql-5.6.11-win32\\include C:\\Utils\\postgresql\\pgsql\\include" "LIBS += -lodbc32" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/odbc
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\odbc && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make
              > del main.o
              > g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-win32\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\5.11.1\mingw53_32\mkspecs\win32-g++  -o main.o main.cpp
              > g++ -Wl,-s -Wl,-subsystem,console -mthreads -o odbc.exe main.o  -LC:\openssl\lib -LC:\Utils\my_sql\mysql-5.6.11-win32\lib -LC:\Utils\postgresql\pgsql\lib -lodbc32 
               => source accepted.
              test config.sqldrivers.libraries.odbc succeeded
              looking for library psql
              Trying source 0 (type pkgConfig) of library psql ...
              pkg-config use disabled globally.
                => source produced no result.
              Trying source 1 (type psqlConfig) of library psql ...
              pg_config not found.
                => source produced no result.
              Trying source 2 (type psqlEnv) of library psql ...
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\psql && C:\Qt\5.11.1\mingw53_32\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_LIBDIR += C:\\openssl\\lib C:\\Utils\\my_sql\\mysql-5.6.11-win32\\lib C:\\Utils\\postgresql\\pgsql\\lib" "INCLUDEPATH += C:\\openssl\\include C:\\Utils\\my_sql\\mysql-5.6.11-win32\\include C:\\Utils\\postgresql\\pgsql\\include" "LIBS += -llibpq -lws2_32 -ladvapi32" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/psql
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\psql && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make
              > del main.o
              > Could Not Find C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\psql\main.o
              > g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-win32\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\5.11.1\mingw53_32\mkspecs\win32-g++  -o main.o main.cpp
              > main.cpp:2:22: fatal error: libpq-fe.h: No such file or directory
              > compilation terminated.
              > Makefile:415: recipe for target 'main.o' failed
              > mingw32-make: *** [main.o] Error 1
               => source failed verification.
              Trying source 3 (type psqlEnv) of library psql ...
                => source failed condition '!config.win32'.
              test config.sqldrivers.libraries.psql FAILED
              looking for library sqlite2
              Trying source 0 (type inline) of library sqlite2 ...
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\sqlite2 && C:\Qt\5.11.1\mingw53_32\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_LIBDIR += C:\\openssl\\lib C:\\Utils\\my_sql\\mysql-5.6.11-win32\\lib C:\\Utils\\postgresql\\pgsql\\lib" "INCLUDEPATH += C:\\openssl\\include C:\\Utils\\my_sql\\mysql-5.6.11-win32\\include C:\\Utils\\postgresql\\pgsql\\include" "LIBS += -lsqlite" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/sqlite2
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\sqlite2 && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make
              > del main.o
              > Could Not Find C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\sqlite2\main.o
              > g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-win32\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\5.11.1\mingw53_32\mkspecs\win32-g++  -o main.o main.cpp
              > main.cpp:2:20: fatal error: sqlite.h: No such file or directory
              > compilation terminated.
              > Makefile:415: recipe for target 'main.o' failed
              > mingw32-make: *** [main.o] Error 1
               => source failed verification.
              test config.sqldrivers.libraries.sqlite2 FAILED
              looking for library tds
              Trying source 0 (type sybaseEnv) of library tds ...
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\tds && C:\Qt\5.11.1\mingw53_32\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_LIBDIR += C:\\openssl\\lib C:\\Utils\\my_sql\\mysql-5.6.11-win32\\lib C:\\Utils\\postgresql\\pgsql\\lib" "INCLUDEPATH += C:\\openssl\\include C:\\Utils\\my_sql\\mysql-5.6.11-win32\\include C:\\Utils\\postgresql\\pgsql\\include" "LIBS += -lNTWDBLIB" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/tds
              + cd /d C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\tds && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make
              > del main.o
              > Could Not Find C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\config.tests\tds\main.o
              > g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-win32\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\5.11.1\mingw53_32\mkspecs\win32-g++  -o main.o main.cpp
              > main.cpp:2:22: fatal error: sybfront.h: No such file or directory
              > compilation terminated.
              > Makefile:415: recipe for target 'main.o' failed
              > mingw32-make: *** [main.o] Error 1
               => source failed verification.
              Trying source 1 (type sybaseEnv) of library tds ...
                => source failed condition '!config.win32'.
              test config.sqldrivers.libraries.tds FAILED
              

              my config.cache:

              cache.platform = win32-g++
              cache.xplatform = win32-g++
              cache.db2._KEYS_ = result msgs
              cache.db2.result = false
              cache.db2.msgs = "Trying source 0 (type inline) of library db2 ..." "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\db2 && C:\\Qt\\5.11.1\\mingw53_32\\bin\\qmake.exe \"CONFIG -= qt debug_and_release app_bundle lib_bundle\" \"CONFIG += shared warn_off console single_arch\" \"QMAKE_LIBDIR += C:\\\\openssl\\\\lib C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\lib C:\\\\Utils\\\\postgresql\\\\pgsql\\\\lib\" \"INCLUDEPATH += C:\\\\openssl\\\\include C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\include C:\\\\Utils\\\\postgresql\\\\pgsql\\\\include\" \"LIBS += -ldb2cli\" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/db2" "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\db2 && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make" "> del main.o" "> Could Not Find C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\db2\\main.o" "> g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\\openssl\\include -IC:\\Utils\\my_sql\\mysql-5.6.11-win32\\include -IC:\\Utils\\postgresql\\pgsql\\include -IC:\\Qt\\5.11.1\\mingw53_32\\mkspecs\\win32-g++  -o main.o main.cpp" "> main.cpp:2:20: fatal error: sqlcli.h: No such file or directory" "> compilation terminated." "> Makefile:415: recipe for target \'main.o\' failed" "> mingw32-make: *** [main.o] Error 1" " => source failed verification." "Trying source 1 (type inline) of library db2 ..." "  => source failed condition \'!config.win32\'."
              cache.ibase._KEYS_ = result msgs
              cache.ibase.result = false
              cache.ibase.msgs = "Trying source 0 (type inline) of library ibase ..." "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\ibase && C:\\Qt\\5.11.1\\mingw53_32\\bin\\qmake.exe \"CONFIG -= qt debug_and_release app_bundle lib_bundle\" \"CONFIG += shared warn_off console single_arch\" \"QMAKE_LIBDIR += C:\\\\openssl\\\\lib C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\lib C:\\\\Utils\\\\postgresql\\\\pgsql\\\\lib\" \"INCLUDEPATH += C:\\\\openssl\\\\include C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\include C:\\\\Utils\\\\postgresql\\\\pgsql\\\\include\" \"LIBS += -lgds32_ms\" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/ibase" "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\ibase && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make" "> del main.o" "> Could Not Find C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\ibase\\main.o" "> g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\\openssl\\include -IC:\\Utils\\my_sql\\mysql-5.6.11-win32\\include -IC:\\Utils\\postgresql\\pgsql\\include -IC:\\Qt\\5.11.1\\mingw53_32\\mkspecs\\win32-g++  -o main.o main.cpp" "> main.cpp:2:19: fatal error: ibase.h: No such file or directory" "> compilation terminated." "> Makefile:415: recipe for target \'main.o\' failed" "> mingw32-make: *** [main.o] Error 1" " => source failed verification." "Trying source 1 (type inline) of library ibase ..." "  => source failed condition \'!config.win32\'."
              cache.mysql._KEYS_ = result msgs
              cache.mysql.result = false
              cache.mysql.msgs = "Trying source 0 (type mysqlConfig) of library mysql ..." "mysql_config not found." "  => source produced no result." "Trying source 1 (type mysqlConfig) of library mysql ..." "mysql_config not found." "  => source produced no result." "Trying source 2 (type mysqlConfig) of library mysql ..." "mysql_config not found." "  => source produced no result." "Trying source 3 (type mysqlConfig) of library mysql ..." "mysql_config not found." "  => source produced no result." "Trying source 4 (type inline) of library mysql ..." "  => source failed condition \'!config.win32\'." "Trying source 5 (type inline) of library mysql ..." "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\mysql && C:\\Qt\\5.11.1\\mingw53_32\\bin\\qmake.exe \"CONFIG -= qt debug_and_release app_bundle lib_bundle\" \"CONFIG += shared warn_off console single_arch\" \"QMAKE_LIBDIR += C:\\\\openssl\\\\lib C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\lib C:\\\\Utils\\\\postgresql\\\\pgsql\\\\lib\" \"INCLUDEPATH += C:\\\\openssl\\\\include C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\include C:\\\\Utils\\\\postgresql\\\\pgsql\\\\include\" \"LIBS += -llibmysql\" \"INCLUDEPATH *= \\\"c:\\\\Program Files ^(x86^)\\\\MySQL\\\\MySQL Connector C 6.1\\\\lib\\\"\" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/mysql" "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\mysql && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make" "> del main.o" "> Could Not Find C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\mysql\\main.o" "> g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\\openssl\\include -IC:\\Utils\\my_sql\\mysql-5.6.11-win32\\include -IC:\\Utils\\postgresql\\pgsql\\include -I\"c:\\Program Files (x86)\\MySQL\\MySQL Connector C 6.1\\lib\" -IC:\\Qt\\5.11.1\\mingw53_32\\mkspecs\\win32-g++  -o main.o main.cpp" "> main.cpp:5:19: fatal error: mysql.h: No such file or directory" "> compilation terminated." "> Makefile:415: recipe for target \'main.o\' failed" "> mingw32-make: *** [main.o] Error 1" " => source failed verification." "Trying source 6 (type inline) of library mysql ..." "  => source failed condition \'!config.win32\'."
              cache.oci._KEYS_ = result msgs
              cache.oci.result = false
              cache.oci.msgs = "Trying source 0 (type inline) of library oci ..." "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\oci && C:\\Qt\\5.11.1\\mingw53_32\\bin\\qmake.exe \"CONFIG -= qt debug_and_release app_bundle lib_bundle\" \"CONFIG += shared warn_off console single_arch\" \"QMAKE_LIBDIR += C:\\\\openssl\\\\lib C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\lib C:\\\\Utils\\\\postgresql\\\\pgsql\\\\lib\" \"INCLUDEPATH += C:\\\\openssl\\\\include C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\include C:\\\\Utils\\\\postgresql\\\\pgsql\\\\include\" \"LIBS += -loci\" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/oci" "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\oci && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make" "> del main.o" "> Could Not Find C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\oci\\main.o" "> g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\\openssl\\include -IC:\\Utils\\my_sql\\mysql-5.6.11-win32\\include -IC:\\Utils\\postgresql\\pgsql\\include -IC:\\Qt\\5.11.1\\mingw53_32\\mkspecs\\win32-g++  -o main.o main.cpp" "> main.cpp:2:17: fatal error: oci.h: No such file or directory" "> compilation terminated." "> Makefile:415: recipe for target \'main.o\' failed" "> mingw32-make: *** [main.o] Error 1" " => source failed verification." "Trying source 1 (type inline) of library oci ..." "  => source failed condition \'!config.win32\'."
              cache.odbc._KEYS_ = result msgs source sources.0.libs sources.0.includedir sources.0.cflags sources.0.version sources.0.export
              cache.odbc.result = true
              cache.odbc.msgs = "Trying source 0 (type inline) of library odbc ..." "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\odbc && C:\\Qt\\5.11.1\\mingw53_32\\bin\\qmake.exe \"CONFIG -= qt debug_and_release app_bundle lib_bundle\" \"CONFIG += shared warn_off console single_arch\" \"QMAKE_LIBDIR += C:\\\\openssl\\\\lib C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\lib C:\\\\Utils\\\\postgresql\\\\pgsql\\\\lib\" \"INCLUDEPATH += C:\\\\openssl\\\\include C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\include C:\\\\Utils\\\\postgresql\\\\pgsql\\\\include\" \"LIBS += -lodbc32\" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/odbc" "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\odbc && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make" "> del main.o" "> g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\\openssl\\include -IC:\\Utils\\my_sql\\mysql-5.6.11-win32\\include -IC:\\Utils\\postgresql\\pgsql\\include -IC:\\Qt\\5.11.1\\mingw53_32\\mkspecs\\win32-g++  -o main.o main.cpp" "> g++ -Wl,-s -Wl,-subsystem,console -mthreads -o odbc.exe main.o  -LC:\\openssl\\lib -LC:\\Utils\\my_sql\\mysql-5.6.11-win32\\lib -LC:\\Utils\\postgresql\\pgsql\\lib -lodbc32 " " => source accepted."
              cache.odbc.source = 0
              cache.odbc.sources.0.libs = -lodbc32
              cache.odbc.sources.0.includedir = 
              cache.odbc.sources.0.cflags = 
              cache.odbc.sources.0.version = 
              cache.odbc.sources.0.export = 
              cache.psql._KEYS_ = result msgs
              cache.psql.result = false
              cache.psql.msgs = "Trying source 0 (type pkgConfig) of library psql ..." "pkg-config use disabled globally." "  => source produced no result." "Trying source 1 (type psqlConfig) of library psql ..." "pg_config not found." "  => source produced no result." "Trying source 2 (type psqlEnv) of library psql ..." "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\psql && C:\\Qt\\5.11.1\\mingw53_32\\bin\\qmake.exe \"CONFIG -= qt debug_and_release app_bundle lib_bundle\" \"CONFIG += shared warn_off console single_arch\" \"QMAKE_LIBDIR += C:\\\\openssl\\\\lib C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\lib C:\\\\Utils\\\\postgresql\\\\pgsql\\\\lib\" \"INCLUDEPATH += C:\\\\openssl\\\\include C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\include C:\\\\Utils\\\\postgresql\\\\pgsql\\\\include\" \"LIBS += -llibpq -lws2_32 -ladvapi32\" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/psql" "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\psql && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make" "> del main.o" "> Could Not Find C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\psql\\main.o" "> g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\\openssl\\include -IC:\\Utils\\my_sql\\mysql-5.6.11-win32\\include -IC:\\Utils\\postgresql\\pgsql\\include -IC:\\Qt\\5.11.1\\mingw53_32\\mkspecs\\win32-g++  -o main.o main.cpp" "> main.cpp:2:22: fatal error: libpq-fe.h: No such file or directory" "> compilation terminated." "> Makefile:415: recipe for target \'main.o\' failed" "> mingw32-make: *** [main.o] Error 1" " => source failed verification." "Trying source 3 (type psqlEnv) of library psql ..." "  => source failed condition \'!config.win32\'."
              cache.sqlite2._KEYS_ = result msgs
              cache.sqlite2.result = false
              cache.sqlite2.msgs = "Trying source 0 (type inline) of library sqlite2 ..." "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\sqlite2 && C:\\Qt\\5.11.1\\mingw53_32\\bin\\qmake.exe \"CONFIG -= qt debug_and_release app_bundle lib_bundle\" \"CONFIG += shared warn_off console single_arch\" \"QMAKE_LIBDIR += C:\\\\openssl\\\\lib C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\lib C:\\\\Utils\\\\postgresql\\\\pgsql\\\\lib\" \"INCLUDEPATH += C:\\\\openssl\\\\include C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\include C:\\\\Utils\\\\postgresql\\\\pgsql\\\\include\" \"LIBS += -lsqlite\" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/sqlite2" "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\sqlite2 && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make" "> del main.o" "> Could Not Find C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\sqlite2\\main.o" "> g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\\openssl\\include -IC:\\Utils\\my_sql\\mysql-5.6.11-win32\\include -IC:\\Utils\\postgresql\\pgsql\\include -IC:\\Qt\\5.11.1\\mingw53_32\\mkspecs\\win32-g++  -o main.o main.cpp" "> main.cpp:2:20: fatal error: sqlite.h: No such file or directory" "> compilation terminated." "> Makefile:415: recipe for target \'main.o\' failed" "> mingw32-make: *** [main.o] Error 1" " => source failed verification."
              cache.tds._KEYS_ = result msgs
              cache.tds.result = false
              cache.tds.msgs = "Trying source 0 (type sybaseEnv) of library tds ..." "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\tds && C:\\Qt\\5.11.1\\mingw53_32\\bin\\qmake.exe \"CONFIG -= qt debug_and_release app_bundle lib_bundle\" \"CONFIG += shared warn_off console single_arch\" \"QMAKE_LIBDIR += C:\\\\openssl\\\\lib C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\lib C:\\\\Utils\\\\postgresql\\\\pgsql\\\\lib\" \"INCLUDEPATH += C:\\\\openssl\\\\include C:\\\\Utils\\\\my_sql\\\\mysql-5.6.11-win32\\\\include C:\\\\Utils\\\\postgresql\\\\pgsql\\\\include\" \"LIBS += -lNTWDBLIB\" C:/Qt/5.11.1/Src/qtbase/src/plugins/sqldrivers/config.tests/tds" "+ cd /d C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\tds && set MAKEFLAGS=& mingw32-make clean && set MAKEFLAGS=& mingw32-make" "> del main.o" "> Could Not Find C:\\Qt\\5.11.1\\Src\\qtbase\\src\\plugins\\sqldrivers\\config.tests\\tds\\main.o" "> g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\\openssl\\include -IC:\\Utils\\my_sql\\mysql-5.6.11-win32\\include -IC:\\Utils\\postgresql\\pgsql\\include -IC:\\Qt\\5.11.1\\mingw53_32\\mkspecs\\win32-g++  -o main.o main.cpp" "> main.cpp:2:22: fatal error: sybfront.h: No such file or directory" "> compilation terminated." "> Makefile:415: recipe for target \'main.o\' failed" "> mingw32-make: *** [main.o] Error 1" " => source failed verification." "Trying source 1 (type sybaseEnv) of library tds ..." "  => source failed condition \'!config.win32\'."
              

              qtsqldrivers-config.pri

              QT.sqldrivers.enabled_features = 
              QT.sqldrivers.disabled_features = 
              QT.sqldrivers.QT_CONFIG = 
              QT.sqldrivers.exports = 
              QT.sqldrivers_private.enabled_features = sql-odbc sql-sqlite
              QT.sqldrivers_private.disabled_features = sql-db2 sql-ibase sql-mysql sql-oci sql-psql sql-sqlite2 sql-tds system-sqlite
              QT.sqldrivers_private.libraries = odbc
              QMAKE_LIBS_ODBC = -lodbc32
              

              Cheers,
              Cedric

              1 Reply Last reply
              0
              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #8

                Where exactly do you have mysql.h located on your computer ?

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                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                0
                • C Offline
                  C Offline
                  cdwijs
                  wrote on last edited by
                  #9

                  Hi, i have mysql.h at the following locations:

                  C:\Program Files\MySQL\MySQL Server 8.0\include
                  C:\Program Files (x86)\MySQL\MySQL Connector C 6.1\include
                  C:\Program Files\MySQL\MySQL Connector C 6.1\include

                  Cheers,
                  Cedric

                  1 Reply Last reply
                  0
                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by SGaist
                    #10

                    Then why are you using MYSQL_INCDIR="c:\Program Files (x86)\MySQL\MySQL Connector C 6.1\lib" ?
                    It should be includeand not lib.

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                    • C Offline
                      C Offline
                      cdwijs
                      wrote on last edited by
                      #11

                      Thank you.
                      I used /lib because it's in on the instructions on the Qt website: http://doc.qt.io/qt-5/sql-driver.html Can I file a bug report for the instructions on the site?

                      How to Build the QMYSQL Plugin on Windows
                      
                      You need to get the MySQL installation files. Run SETUP.EXE and choose "Custom Install". Install the "Libs & Include Files" Module. Build the plugin as follows (here it is assumed that MySQL is installed in C:\MySQL):
                      cd %QTDIR%\qtbase\src\plugins\sqldrivers
                      qmake -- MYSQL_INCDIR=C:/MySQL/include "MYSQL_LIBDIR=C:/MYSQL/MySQL Server <version>/lib/opt"
                      nmake sub-mysql
                      If you are not using a Microsoft compiler, replace nmake with mingw32-make in the line above.
                      

                      I'll test your suggestion shortly.
                      Cheers,
                      Cedric

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                      0
                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #12

                        I think you may have misread the documentation.

                        There are two variables: MYSQL_INCDIR and MYSQL_LIBDIR.

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                        2
                        • C Offline
                          C Offline
                          cdwijs
                          wrote on last edited by
                          #13

                          I see it now, I indeed only typed halve of the command.
                          Thanks, I can now test it further.

                          Cheers,
                          Cedric

                          1 Reply Last reply
                          0
                          • Cobra91151C Offline
                            Cobra91151C Offline
                            Cobra91151
                            wrote on last edited by Cobra91151
                            #14

                            Hello! Do you have libs included in your .pro file?

                            contains(QMAKE_TARGET.arch, x86_64) {
                                LIBS += -L"C:/MySQL/mysql-5.7.22-winx64/lib" -llibmysql
                            } else {
                                LIBS += -L"C:/MySQL/mysql-5.7.22-win32/lib" -llibmysql
                            }
                            

                            Note that you need to download the MySQL from here MySQL Community Server and extract the data for example to C drive. Also I suggest to copy libmysql.dll to the application directory.

                            I use Qt 5.9.6 and Visual Studio 2017 compiler and it doesn't require to build the driver for MySQL.

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                            0
                            • C Offline
                              C Offline
                              cdwijs
                              wrote on last edited by
                              #15

                              Hi All,

                              I'm one step closer to my goal, I can now build the plugin. I cannot yet connect to my database.
                              Steps I've taken:

                              1. Download and install https://downloads.mysql.com/archives/get/file/mysql-connector-c-6.1.11-win32.msi
                              2. Add C:\Qt\Tools\mingw530_32\bin and C:\Qt\5.10.1\mingw53_32\bin to the path
                              3. Open cmd.exe, and enter the following commands:
                              c:\Qt\5.10.1\Src\qtbase\src\plugins\sqldrivers>qmake -- MYSQL_INCDIR="c:\Program Files (x86)\MySQL\MySQL Connector C 6.1\include" MYSQL_LIBDIR="c:\Program Files (x86)\MySQL\MySQL Connector C 6.1"\lib
                              
                              Running configuration tests...
                              Checking for DB2 (IBM)... no
                              Checking for InterBase... no
                              Checking for MySQL... yes
                              Checking for OCI (Oracle)... no
                              Checking for ODBC... yes
                              Checking for PostgreSQL... no
                              Checking for SQLite (version 2)... no
                              Checking for TDS (Sybase)... no
                              Done running configuration tests.
                              
                              Configure summary:
                              
                              Qt Sql:
                                DB2 (IBM) .............................. no
                                InterBase .............................. no
                                MySql .................................. yes
                                OCI (Oracle) ........................... no
                                ODBC ................................... yes
                                PostgreSQL ............................. no
                                SQLite2 ................................ no
                                SQLite ................................. yes
                                  Using system provided SQLite ......... no
                                TDS (Sybase) ........................... no
                              
                              Qt is now configured for building. Just run 'mingw32-make'.
                              Once everything is built, Qt is installed.
                              You should NOT run 'mingw32-make install'.
                              Note that this build cannot be deployed to other machines or devices.
                              
                              Prior to reconfiguration, make sure you remove any leftovers from
                              the previous build.
                              
                              mingw32-make
                              
                              <<lots of text>>
                              
                              1. Create a new Qt program, with the following options:
                                Qt widgets application
                                Name: sqlTest
                                Kit: Desktop Qt 5.11.1 MinGB 32 bit (default)
                                ClassName: (MainWindow) (default)
                                Version control: Git

                              mysql.pro

                              QT       += core gui sql
                              greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
                              TARGET = sqlTest
                              TEMPLATE = app
                              DEFINES += QT_DEPRECATED_WARNINGS
                              SOURCES += \
                                      main.cpp \
                                      mainwindow.cpp
                              HEADERS += \
                                      mainwindow.h
                              FORMS += \
                                      mainwindow.ui
                              

                              mainwindow.cpp

                              #include "mainwindow.h"
                              #include "ui_mainwindow.h"
                              #include <QtSql>
                              #include <QDebug>
                              MainWindow::MainWindow(QWidget *parent) :
                                  QMainWindow(parent),
                                  ui(new Ui::MainWindow)
                              {
                                  ui->setupUi(this);
                              
                                  QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");
                                 db.setHostName("localhost");
                                 db.setDatabaseName("world");
                                 db.setUserName("root");
                                 db.setPassword("PassOlyForForumQuestion");
                                 bool ok = db.open();
                                 qDebug()<<ok;
                              }
                              
                              MainWindow::~MainWindow()
                              {
                                  delete ui;
                              }
                              

                              Program output:

                              QSqlDatabase: QMYSQL driver not loaded
                              QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QODBC QODBC3 QPSQL QPSQL7
                              false
                              

                              Cheers,
                              Cedric

                              H H 2 Replies Last reply
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                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #16

                                Did you install the plugin ?

                                Did you also check that the PATH environment variable in the Run part of the Project panel contains the folder where the MySQL .dlls can be found ?

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                                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                C 1 Reply Last reply
                                0
                                • SGaistS SGaist

                                  Did you install the plugin ?

                                  Did you also check that the PATH environment variable in the Run part of the Project panel contains the folder where the MySQL .dlls can be found ?

                                  C Offline
                                  C Offline
                                  cdwijs
                                  wrote on last edited by cdwijs
                                  #17

                                  How can I install the plugin? Where can the plugin be found? What does it look like? Where does Qt look for the plugin?

                                  Why does the Qt runtime tell me the QMYSQL driver is available while the driver cannot be loaded? Is there any way to see why the driver did not load?

                                  Is there a guide anywhere that works with the current version of myqsl and the current version of Qt? This guide is for mysql version 5.1: https://forum.qt.io/topic/40672/how-to-create-the-plugin-of-mysql-for-qt

                                  Am I the first one that tries to use Qt 5 and mysql server 8?

                                  Cheers,
                                  Cedric

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                                  0
                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #18

                                    It's explained in the documentation
                                    In the plugins subfolder of your Qt installation under sqldrivers.
                                    It's a .dll file since you're on Windows.
                                    Qt looks for the plugins in the subfolder named plugins unless you tweaked the qt.conf file.

                                    Likely because it can find the plugin but will fail to load it. Most of the time it happens because the MySQL .dll files can't be found at run time hence my suggestion in my last post.

                                    The current Qt documentation does.

                                    No you're note, however MySQL server 8 saw a change in their support for their my_bool custom type. There's a patch to support build the Qt MySQL plugin with MySQL 8.

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                                    • C Offline
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                                      cdwijs
                                      wrote on last edited by
                                      #19

                                      Thanks for your reply.

                                      The documentation you linked (http://doc.qt.io/qt-5/sql-driver.html#building-the-drivers) assumes mysql is installed in c:\mysql. This is not the case for a default installation of mysql8, as it installs itself into c:\program files and c:\program files (x86). This leads me to the conclusion that the install instructions on that page are outdated.

                                      Do you know any instructions for building the plugin for qt5 and mysql 8?

                                      Cheers,
                                      Cedric

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                                      • SGaistS Offline
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                                        SGaist
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #20

                                        The doc says:

                                        You need to get the MySQL installation files. Run SETUP.EXE and choose "Custom Install". Install the "Libs & Include Files" Module. Build the plugin as follows (here it is assumed that MySQL is installed in C:\MySQL):
                                        

                                        This simply means that it assumes that the user selected that folder to install MySQL.

                                        Then:

                                        cd %QTDIR%\qtbase\src\plugins\sqldrivers
                                        qmake -- MYSQL_INCDIR=C:/MySQL/include "MYSQL_LIBDIR=C:/MYSQL/MySQL Server <version>/lib/opt"
                                        nmake sub-mysql
                                        

                                        It shows that the build is configured to use that folder.

                                        If you put MySQL somewhere else, update the command accordingly to use that folder.

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                                          cdwijs
                                          wrote on last edited by
                                          #21

                                          I have done the steps again:
                                          c:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers>qmake -- MYSQL_INCDIR="c:\Program Files (x86)\MySQL\MySQL Connector C 6.1\include" MYSQL_LIBDIR="c:\Program Files (x86)\MySQL\MySQL Connector C 6.1"\lib
                                          and
                                          mingw32-make

                                          After this, there's no mysql.dll below C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers (in fact, there's no mysql.dll on my entire C:\ drive)

                                          However, this directory is newly created:
                                          C:\Qt\5.11.1\Src\qtbase\src\plugins\sqldrivers\plugins\sqldrivers
                                          it contains the following files: (and a few extra files with sqlite in the name)
                                          qsqlmysql.dll
                                          qsqlmysqld.dll
                                          qsqlodbc.dll
                                          qsqlodbcd.dll

                                          Where do I put these?

                                          Cheers,
                                          Cedric

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