Error QMYSQL Plugin on Windows

[jsulm]

@Stelian You need to call qmake from the source code directory of Qt source code you downloaded, not from your installed Qt.
This is your Qt installation: c:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers
Look again at the link you posted: c:\Qt\5.10.1\Src\qtbase\src\plugins\sqldrivers is used there (in your case version would be 5.12.1).

"'qmake' is not recognized as an internal or external command, operable program or batch file." - use absolute path to qmake.

[Stelian]

@jsulm Thank you for your reply.
I have modified the line with this one.c:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers>qmake -- MYSQL_INCDIR=C:\Program Files\MySQL\MySQL Server 8.0\include "MYSQL_LIBDIR=C:\Program Files\MySQL\MySQL Server 8.0\lib" but I get the same error: "qmake' is not recognized as an internal or external command, operable program or batch file"

[SGaist]

Use the full path to the qmake executable or start a Qt enabled command line.

[Stelian]

Okay, another error.
I quit, error after error with QMYSQL driver.
I really like Qt, but I have no patience.
Thank you anyway for your help, SGaist and jsulm.

ERROR: Invalid command line parameter 'Files/MySQL/MySQL'.

c:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers>C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake -- MYSQL_INCDIR=C:/Program Files/MySQL/MySQL Server 8.0/include "MYSQL_LIBDIR=C:Program Files/MYSQL/MySQL Server 8.0/lib"

[jsulm]

@Stelian This error is unrelated to Qt: you have a path with spaces (good example for why you should avoid such paths!). You need to put such paths into "":

c:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers>C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake -- MYSQL_INCDIR="C:/Program Files/MySQL/MySQL Server 8.0/include" MYSQL_LIBDIR="C:Program Files/MYSQL/MySQL Server 8.0/lib"

"I have no patience" - well, one should have when developing software...

[J.Hilk]

@jsulm said in Error QMYSQL Plugin on Windows:

"I have no patience" - well, one should have when developing software...

maybe it's a typo and it's supposed to be patients, meaning als patients are gone and there's now more time on hand for developing software

:P

[Stelian]

@jsulm Thank you for reply!
I,ve run c:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers>C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake -- MYSQL_INCDIR="C:/Program Files/MySQL/MySQL Server 8.0/include" MYSQL_LIBDIR="C:Program Files/MYSQL/MySQL Server 8.0/lib"
and I get the next message:

Running configuration tests...
Done running configuration tests.

Configure summary:

Qt Sql Drivers:
  DB2 (IBM) .............................. no
  InterBase .............................. no
  MySql .................................. no
  OCI (Oracle) ........................... no
  ODBC ................................... no
  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, you must run 'mingw32-make install'.
Qt will be installed into 'C:\Qt\Qt5.12.1\5.12.1\mingw73_64'.

And I,ve run mingw32-make

'mingw32-make' is not recognized as an internal or external command,
operable program or batch file.

Do I have to add the path to make.exe in environment variables ?
But I don't find de make.exe file.
What else do I have to do ?

[jsulm]

@Stelian Use whole path to mingw-make

[Stelian]

I,ve looked foe mingw-make.exe file into C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin
I don't find it.
Do I have to follow next steps ?

uninstall your current MinGW installation
reinstall MinGW and select the following option in the setup dialog
a) Custom
b) Compilers C & C++
c) MSYS
extend your PATH environment variable in the System Properties / Environment Variables dialog of windows by adding C:\MinGW\msys\1.0\bin;C:\MinGW\bin; in front of the values that are already there
restart machine

[jsulm]

@Stelian It should be in c:\Qt\Tools\mingw730_64\bin

[Stelian]

@jsulm I've run the full path to mingw32-make c:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers>c:\Qt\Qt5.12.1\Tools\mingw730_64\bin\mingw32-make

cd sqlite\ && ( if not exist Makefile C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -o Makefile C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\sqlite\sqlite.pro ) && c:/Qt/Qt5.12.1/Tools/mingw730_64/bin/mingw32-make -f Makefile
mingw32-make[1]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
c:/Qt/Qt5.12.1/Tools/mingw730_64/bin/mingw32-make -f Makefile.Release all
mingw32-make[2]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
g++ -c -fno-keep-inline-dllexport -O2 -std=c++1z -fno-exceptions -Wall -W -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DNDEBUG -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -IC:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1\QtCore -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore -I.moc\release -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-winx64\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\mkspecs\win32-g++  -o .obj\release\qsql_sqlite.o qsql_sqlite.cpp
g++: error: CreateProcess: No such file or directory
mingw32-make[2]: *** [Makefile.Release:377: .obj/release/qsql_sqlite.o] Error 1
mingw32-make[2]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
mingw32-make[1]: *** [Makefile:42: release-all] Error 2
mingw32-make[1]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
mingw32-make: *** [Makefile:43: sub-sqlite-make_first] Error 2

[Stelian]

Meanwhile, I added c:\Qt\Qt5.12.1\Tools\mingw730_64\bin\mingw32-make in PATH environment variable in the System Properties and restart the computer and I've run again

c:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers>C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake -- MYSQL_INCDIR="C:/Program Files/MySQL/MySQL Server 8.0/include" MYSQL_LIBDIR="C:Program Files/MYSQL/MySQL Server 8.0/lib"

c:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers>c:\Qt\Qt5.12.1\Tools\mingw730_64\bin\mingw32-make

and I get ...

cd sqlite\ && ( if not exist Makefile C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -o Makefile C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\sqlite\sqlite.pro ) && c:/Qt/Qt5.12.1/Tools/mingw730_64/bin/mingw32-make -f Makefile
mingw32-make[1]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
c:/Qt/Qt5.12.1/Tools/mingw730_64/bin/mingw32-make -f Makefile.Release all
mingw32-make[2]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
g++ -c -fno-keep-inline-dllexport -O2 -std=c++1z -fno-exceptions -Wall -W -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DNDEBUG -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -IC:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1\QtCore -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore -I.moc\release -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-winx64\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\mkspecs\win32-g++  -o .obj\release\qsql_sqlite.o qsql_sqlite.cpp
g++ -fno-keep-inline-dllexport -O2 -std=c++1z -fno-exceptions -Wall -W -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -dM -E -o .moc\release\moc_predefs.h C:\Qt\Qt5.12.1\5.12.1\mingw73_64\mkspecs\features\data\dummy.cpp
C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\moc.exe -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DNDEBUG -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB --include C:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite/.moc/release/moc_predefs.h -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/mkspecs/win32-g++ -IC:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite -IC:/Qt/Qt5.12.1/Sources/qtbase/src/3rdparty/sqlite -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql/5.12.1 -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql/5.12.1/QtSql -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore/5.12.1 -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore/5.12.1/QtCore -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++ -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32 -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/backward -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include-fixed -IC:/Qt/Qt5.12.1/Tools/mingw730_64/x86_64-w64-mingw32/include smain.cpp -o .moc\release\smain.moc
g++ -c -fno-keep-inline-dllexport -O2 -std=c++1z -fno-exceptions -Wall -W -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DNDEBUG -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -IC:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1\QtCore -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore -I.moc\release -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-winx64\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\mkspecs\win32-g++  -o .obj\release\smain.o smain.cpp
gcc -c -fno-keep-inline-dllexport -O2 -std=gnu11 -fno-exceptions -Wall -W -Wextra -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DNDEBUG -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -IC:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1\QtCore -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore -I.moc\release -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-winx64\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\mkspecs\win32-g++  -o .obj\release\sqlite3.o C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c
C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c: In function 'sqlite3ThreadJoin':
C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c:29362:8: warning: variable 'bRc' set but not used [-Wunused-but-set-variable]
   BOOL bRc;
        ^~~
C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c: In function 'winUnfetch':
C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c:44948:45: warning: unused parameter 'iOff' [-Wunused-parameter]
 static int winUnfetch(sqlite3_file *fd, i64 iOff, void *p){
                                             ^~~~
C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c: In function 'sqlite3_db_status':
C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c:20744:10: warning: this statement may fall through [-Wimplicit-fallthrough=]
       op = SQLITE_DBSTATUS_CACHE_WRITE+1;
       ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c:20746:5: note: here
     case SQLITE_DBSTATUS_CACHE_HIT:
     ^~~~
C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c: In function 'sqlite3_str_vappendf':
C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c:27452:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
         flag_long = sizeof(char*)==sizeof(i64) ? 2 :
         ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                      sizeof(char*)==sizeof(long int) ? 1 : 0;
...
...
...
C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\moc.exe -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB --include C:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite/.moc/debug/moc_predefs.h -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/mkspecs/win32-g++ -IC:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite -IC:/Qt/Qt5.12.1/Sources/qtbase/src/3rdparty/sqlite -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql/5.12.1 -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql/5.12.1/QtSql -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore/5.12.1 -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore/5.12.1/QtCore -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++ -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32 -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/backward -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include-fixed -IC:/Qt/Qt5.12.1/Tools/mingw730_64/x86_64-w64-mingw32/include qsql_sqlite_p.h -o .moc\debug\moc_qsql_sqlite_p.cpp
g++ -c -fno-keep-inline-dllexport -g -Og -std=c++1z -fno-exceptions -Wall -W -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -IC:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1\QtCore -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore -I.moc\debug -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-winx64\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\mkspecs\win32-g++  -o .obj\debug\moc_qsql_sqlite_p.o .moc\debug\moc_qsql_sqlite_p.cpp
windres -i qsqlited_resource.rc -o .obj\debug\qsqlited_resource_res.o --include-dir=. -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB
g++ -shared -Wl,-subsystem,windows -Wl,--out-implib,C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\plugins\sqldrivers\libqsqlited.a -o ..\plugins\sqldrivers\qsqlited.dll .obj/debug/qsql_sqlite.o .obj/debug/smain.o .obj/debug/sqlite3.o .obj/debug/moc_qsql_sqlite_p.o  -LC:\openssl\lib -LC:\Utils\my_sql\mysql-5.6.11-winx64\lib -LC:\Utils\postgresql\pgsql\lib -LC:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\libQt5Sqld.a C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\libQt5Cored.a .obj\debug\qsqlited_resource_res.o
mingw32-make[2]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
mingw32-make[1]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'

[Stelian]

When I've run a simple program

#include <QCoreApplication>
#include <QtSql>
#include <QSqlDatabase>
#include <QtDebug>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");
    db.setHostName("localhost");
    db.setUserName("root");
    db.setPassword("DSa81&l12&z26");
    db.setDatabaseName("Employee_management");

    if (db.open())
    {
        qDebug() << "Database connected successfuly!";
    }
    else
    {
        qDebug() << "Database is not connected!";
    }

    return a.exec();
}

I receive the message "Database is not connected!", which means there are still some blurring about the QMYSQL driver.

[SGaist]

Did you call mingw32-make install after the build succeeded ?

[Stelian]

Yes, and I received the next message

cd odbc\ && ( if not exist Makefile C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -o Makefile C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\odbc\odbc.pro ) && mingw32-make -f Makefile install
mingw32-make[1]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
mingw32-make -f Makefile.Release install
mingw32-make[2]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
copy /y ..\plugins\sqldrivers\qsqlodbc.dll C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlodbc.dll
        1 file(s) copied.
C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -install qinstall C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\lib\cmake\Qt5Sql\Qt5Sql_QODBCDriverPlugin.cmake C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\cmake\Qt5Sql\Qt5Sql_QODBCDriverPlugin.cmake
mingw32-make[2]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
mingw32-make -f Makefile.Debug install
mingw32-make[2]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
copy /y ..\plugins\sqldrivers\qsqlodbcd.dll C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlodbcd.dll
        1 file(s) copied.
C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -install qinstall C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\lib\cmake\Qt5Sql\Qt5Sql_QODBCDriverPlugin.cmake C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\cmake\Qt5Sql\Qt5Sql_QODBCDriverPlugin.cmake
mingw32-make[2]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
mingw32-make[1]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
cd sqlite\ && ( if not exist Makefile C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -o Makefile C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\sqlite\sqlite.pro ) && mingw32-make -f Makefile install
mingw32-make[1]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
mingw32-make -f Makefile.Release install
mingw32-make[2]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
copy /y ..\plugins\sqldrivers\qsqlite.dll C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlite.dll
        1 file(s) copied.
C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -install qinstall C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\lib\cmake\Qt5Sql\Qt5Sql_QSQLiteDriverPlugin.cmake C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\cmake\Qt5Sql\Qt5Sql_QSQLiteDriverPlugin.cmake
mingw32-make[2]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
mingw32-make -f Makefile.Debug install
mingw32-make[2]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
copy /y ..\plugins\sqldrivers\qsqlited.dll C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlited.dll
        1 file(s) copied.
C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -install qinstall C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\lib\cmake\Qt5Sql\Qt5Sql_QSQLiteDriverPlugin.cmake C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\cmake\Qt5Sql\Qt5Sql_QSQLiteDriverPlugin.cmake
mingw32-make[2]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
mingw32-make[1]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'

Part of this message is in my previous post

[Stelian]

When I run the code

QSqlDatabase: QMYSQL driver not loaded
QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QODBC QODBC3 QPSQL QPSQL7
Database is Not Connected!

[SGaist]

In Qt Creator's Run part of the Project panel, did you add the path to the MySQL dlls in the PATH environment variable ?

[Stelian]

@SGaist Let me understand.
First of all, do you mean I have to add that path "C:\Program Files (x86)\MySQL\MySQL Connector C 6.1\lib" or this path "C:\Program Files\MySQL\MySQL Server 8.0\lib"
Second of all, where do I have to add ? (see picture1 and picture2) ?

[jsulm]

@Stelian As @SGaist wrote: in QtCreator Run settings.
I think you need the MySQL connector libs (but you can simply put both).

[Stelian]

@jsulm Where do I have to add in the first picture or second ?