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[SOLVED]Trying to build mysql driver in Qt 5.1.0 and MySQL 5.6


  • Lifetime Qt Champion

    @ "LIBS += -L %mysql%\lib\libmysql.lib"@

    That's your problem, -L is to give a path not a library name



  • Thanks for your post's!

    I got an issue if I want to build my driver. I'm using qt 5.3 and mysql 5.6 (mysql-5.6.20-win32).

    I added mysql.pro to qt creator and add the following two lines to the .pro file:

    @
    LIBS += C:/mysql/mysql-5.6.20-win32lib/libmysql.lib
    INCLUDEPATH += C:/mysql/mysql-5.6.20-win32/include
    @

    I got the following errors if i want to compile the mysql project:

    C:\mysql\mysql-5.6.20-win32\include\mysql_com.h:320: error: C2146: Syntaxfehler: Fehlendes ';' vor Bezeichner 'fd'

    C:\mysql\mysql-5.6.20-win32\include\mysql_com.h:320: error: C4430: Fehlender Typspezifizierer - int wird angenommen. Hinweis: "default-int" wird von C++ nicht untersttzt.

    C:\mysql\mysql-5.6.20-win32\include\mysql_com.h:320: error: C2146: Syntaxfehler: Fehlendes ';' vor Bezeichner 'fd'

    C:\mysql\mysql-5.6.20-win32\include\mysql_com.h:320: error: C4430: Fehlender Typspezifizierer - int wird angenommen. Hinweis: "default-int" wird von C++ nicht untersttzt.

    C:\work\build\qt5\qtbase\src\sql\drivers\mysql\qsql_mysql.cpp:44: error: C1083: Datei (Include) kann nicht ge”ffnet werden: "QtSql/private/qsqldriver_p.h": No such file or directory

    Many thanks for your help!


  • Lifetime Qt Champion

    Hi and welcome to devnet,

    Did you first build Qt 5 yourself ?



  • Hi SGaist,

    yes I built qt5 by my self. I also tried to build the drivers with the following commands (see http://qt-project.org/doc/qt-4.8/sql-driver.html#how-to-build-the-qmysql-plugin-on-windows):

    cd C:\work\build\qt5\qtbase\src\plugins\sqldrivers\mysql

    qmake "INCLUDEPATH+=C:\mysql\mysql-5.6.20-win32\include" "LIBS+=C:\mysql\mysql-5.6.20-win32\lib\libmysql.lib" mysql.pro

    mingw32-make

    If I do the "mingw32-make" command I got the following errors:

    C:\work\build\qt5\qtbase\src\plugins\sqldrivers\mysql>mingw32-make
    mingw32-make -f Makefile.Release all
    mingw32-make[1]: Entering directory 'C:/work/build/qt5/qtbase/src/plugins/sqldri
    vers/mysql'
    Makefile.Release:65: *** missing separator. Stop.
    mingw32-make[1]: Leaving directory 'C:/work/build/qt5/qtbase/src/plugins/sqldriv
    ers/mysql'
    mingw32-make[1]: Leaving directory 'C:/work/build/qt5/qtbase/src/plugins/sqldriv
    ers/mysql'
    Makefile:40: recipe for target 'release-all' failed
    mingw32-make: *** [release-all] Error 2


  • Lifetime Qt Champion

    You're on windows either escape the backslashes or since you are using Qt use the unix notation i.e. forward slashes



  • I'm working on a windows machine. You can see in my post that I'm setting the INCLUDEPATH and the LIBS with \

    What means this error exactly:

    Makefile.Release:65: *** missing separator. Stop.


  • Lifetime Qt Champion

    I know you are, and I already wrote the options you have:

    • escape the \ so in practice use \
    • Since you are using Qt use /

    Second option is cleaner.



  • Sorry for that stupid questions. I'm using the QT 5.4.0 64-bit for Desktop (MSVC 2013) command line.

    I got the same errors if I'm setting the paths like:

    qmake "INCLUDEPATH+=C:\mysql\mysql-5.6.20-win32\include" "LIBS+=C:\mysql\mysql-5.6.20-win32\lib\libmysql.lib" mysql.pro

    or:

    qmake "INCLUDEPATH+=C:/mysql/mysql-5.6.20-win32/include" "LIBS+=C:/mysql/mysql-5.6.20-win32/lib/libmysql.lib" mysql.pro

    or does it mean that I have to set the slashes in the Makefile.Release instead of \ to /

    Many thanks.



  • Ok, i was googling the problem. I get the error in the Makefile.Release in line 65:

    @{......\sql\drivers\mysql}.cpp{.obj\release}.obj::
    $(CXX) -c $(CXXFLAGS) $(INCPATH) -Fo.obj\release\ @<<
    $<
    <<@

    I get the error in line "<<"

    I add before "<<" a tab, so "\T<<". After I fired the mingw32-make command I still got the same problem. It seems to me that the Make.Release and Make.Debug files are generated each time if I do the mingw32-make command.

    Where can I set this behavior?


  • Lifetime Qt Champion

    First thing to do is to delete that folder content and restart



  • I have the same problem "Makefile.Release:65: *** missing separator"
    and i looked in Makefile.Release and didn't find missing separator)
    There were my steps:

    1. create folder [tempMySQL] with include and lib folders from mysqlserver folder
      It's look like this
      c:\qt\qt5.3.1\tempMySQL

    2. open mingw console and go to "C:\Qt\Qt5.3.1\5.3\Src\qtbase\src\plugins\sqldrivers\mysql"

    3. qmake "INCLUDEPATH+=C:\Qt\Qt5.3.1\tempMySQL\include" "LIBS+=C:\Qt\Qt5.3.1\tempMySQL\libmysql.lib" mysql.pro

    4. mingw32-make

    I didn't build Qt5.3.1 by myself, i just download
    Qt 5.3.1 for Windows 32-bit (MinGW 4.8.2, OpenGL, 737 MB) (Info) from here

    And when i worked with Qt 4.8.4 with VS2010 i didn't have a problem.
    I got all those steps then i describe above and it build and worked wihout any problem

    And of course i add mingw to PATH



  • remark: when i build this driver for Qt4.8.4 and VS2010 i used nmake, of course)


  • Lifetime Qt Champion

    Is libmysql.lib the static MySQL client lib ?



  • libmysql.lib it's static library. I got it from .../MySQL/MySQL Server 5.6/lib
    maybe i don't understand your question?


  • Lifetime Qt Champion

    Yes you understood it well. The thing is, on windows, static libraries and import libraries have the same extension but don't work the same. And furthermore, you can't mix mingw and MSVC libraries like that.

    Look at this "wiki entry":http://www.qtcentre.org/wiki/index.php?title=Building_the_QMYSQL_plugin_on_Windows_using_MinGW

    For the steps to use MinGW



  • The same result(((...

    BUT:
    I found that i have MySQL drivers with official build of QT5.3.2))) I have no idea why i didn't see it in first time and spent much time trying to build this drivers)).
    And firstly it didn't work too. Finally i put libmysql.dll into ...\Qt5.3.2\5.3\mingw482_32\bin and it works.!

    I think that problem with my own building of these drivers is that i have VS10, VS12, and MinGW compiler on one OS.... When i'll have free time, maybe in this everning i'll try to build it by mingw on virt. mach with Win7 without another compilers

    Remark: i don't have an idea why - but reimp util from MINGW Utils works only in old version (0.3)



  • This post is deleted!


  • Hello All,
    I do as following:
    C:\Qt\Qt5.1.1\5.1.1\Src\qtbase\src\plugins\sqldrivers\mysql>qmake "INCLUDEPATH+=C:\mySQL\include" "LIBS+=C:\mySQL\lib\libmysql.lib" mysql.pro

    C:\Qt\Qt5.1.1\5.1.1\Src\qtbase\src\plugins\sqldrivers\mysql>mingw32-make

    And go outpu like that:
    C:\Qt\Qt5.1.1\5.1.1\Src\qtbase\src\plugins\sqldrivers\mysql>mingw32-make
    mingw32-make -f Makefile.Release all
    mingw32-make[1]: Entering directory 'C:/Qt/Qt5.1.1/5.1.1/Src/qtbase/src/plugins/sqldrivers/mysql'
    C:\Qt\Qt5.1.1\5.1.1\mingw48_32\bin\moc.exe -DUNICODE -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPT
    release_shared" -I"........\mkspecs\win32-g++" main.cpp -o .moc\release_shared\main.moc
    g++ -c -pipe -fno-keep-inline-dllexport -O2 -std=c++0x -fno-exceptions -frtti -Wall -Wextra -DUNICODE -DQT_NO_CAS
    \QtCore\5.1.1\QtCore" -I".moc\release_shared" -I"........\mkspecs\win32-g++" -o .obj\release_shared\main.o mai
    C:\Qt\Qt5.1.1\5.1.1\mingw48_32\bin\moc.exe -DUNICODE -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPT
    release_shared" -I"........\mkspecs\win32-g++" ......\sql\drivers\mysql\qsql_mysql.cpp -o .moc\release_share
    g++ -c -pipe -fno-keep-inline-dllexport -O2 -std=c++0x -fno-exceptions -frtti -Wall -Wextra -DUNICODE -DQT_NO_CAS
    \QtCore\5.1.1\QtCore" -I".moc\release_shared" -I"........\mkspecs\win32-g++" -o .obj\release_shared\qsql_mysql
    C:\Qt\Qt5.1.1\5.1.1\mingw48_32\bin\moc.exe -DUNICODE -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPT
    release_shared" -I"........\mkspecs\win32-g++" ......\sql\drivers\mysql\qsql_mysql_p.h -o .moc\release_share
    g++ -c -pipe -fno-keep-inline-dllexport -O2 -std=c++0x -fno-exceptions -frtti -Wall -Wextra -DUNICODE -DQT_NO_CAS
    \QtCore\5.1.1\QtCore" -I".moc\release_shared" -I"........\mkspecs\win32-g++" -o .obj\release_shared\moc_qsql_m
    g++ -Wl,-s -shared -Wl,--out-implib,C:\Qt\Qt5.1.1\5.1.1\Src\qtbase\plugins\sqldrivers\libqsqlmysql.a -o ......
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x17c): undefined reference to mysql_num_rows@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x1a7): undefined reference tomysql_stmt_num_rows@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x23c): undefined reference to mysql_num_rows@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x259): undefined reference tomysql_stmt_num_rows@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x29e): undefined reference to mysql_stmt_insert_id@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x2da): undefined reference tomysql_insert_id@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x374): undefined reference to mysql_thread_end@0' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x37f): undefined reference tomysql_close@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x7e8): undefined reference to mysql_character_set_name@4 .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x9c9): undefined reference tomysql_errno@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x9e0): undefined reference to mysql_field_seek@8' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0xa04): undefined reference tomysql_field_seek@8'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0xa0f): undefined reference to mysql_fetch_field@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0xa4f): undefined reference tomysql_fetch_field@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0xa81): undefined reference to mysql_error@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0xa90): undefined reference tomysql_errno@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0xc17): undefined reference to mysql_errno@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0xc51): undefined reference tomysql_stmt_error@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0xc5e): undefined reference to mysql_stmt_errno@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0xdda): undefined reference tomysql_query@8'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0xf1a): undefined reference to mysql_query@8' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x105a): undefined reference tomysql_query@8'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x1190): undefined reference to mysql_fetch_row@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x11d7): undefined reference tomysql_stmt_fetch@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x1372): undefined reference to mysql_list_fields@12' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x13cd): undefined reference tomysql_fetch_field@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x13dc): undefined reference to mysql_free_result@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x1ccc): undefined reference tomysql_init@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x1e1e): undefined reference to mysql_real_connect@32' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x2031): undefined reference tomysql_close@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x21ff): undefined reference to mysql_real_connect@32' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x2271): undefined reference tomysql_set_character_set@8
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x2284): undefined reference to mysql_get_client_version@ .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x229d): undefined reference tomysql_thread_init@0'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x240d): undefined reference to mysql_select_db@8' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x253f): undefined reference tomysql_close@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x25eb): undefined reference to mysql_get_server_version@ .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x261b): undefined reference tomysql_options@12'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x26ce): undefined reference to mysql_stmt_data_seek@12' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x26df): undefined reference tomysql_stmt_fetch@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x2746): undefined reference to mysql_data_seek@12' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x2757): undefined reference tomysql_fetch_row@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x29ad): undefined reference to mysql_fetch_lengths@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x38d4): undefined reference tomysql_get_server_version@
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x3d73): undefined reference to mysql_list_tables@8' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x3dbd): undefined reference tomysql_data_seek@12'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x3dc8): undefined reference to mysql_fetch_row@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x3fd0): undefined reference tomysql_free_result@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x4172): undefined reference to mysql_next_result@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x419a): undefined reference tomysql_store_result@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x41b4): undefined reference to mysql_field_count@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x420b): undefined reference tomysql_affected_rows@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x42a2): undefined reference to mysql_fetch_field_direct@ .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x441c): undefined reference tomysql_free_result@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x46bb): undefined reference to mysql_num_fields@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x47b2): undefined reference tomysql_fetch_field@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x48a4): undefined reference to mysql_stmt_result_metadat .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x48d7): undefined reference tomysql_free_result@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x48f8): undefined reference to mysql_next_result@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x4915): undefined reference tomysql_stmt_close@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x493b): undefined reference to mysql_free_result@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x49f4): undefined reference tomysql_store_result@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x4d52): undefined reference to mysql_real_query@12' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x4e43): undefined reference tomysql_store_result@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x4e68): undefined reference to mysql_field_count@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x4eaa): undefined reference tomysql_affected_rows@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x4f42): undefined reference to mysql_fetch_field_direct@ .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x5010): undefined reference tomysql_field_count@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x50f6): undefined reference to mysql_stmt_prepare@12' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x510f): undefined reference tomysql_stmt_param_count@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x5179): undefined reference to mysql_stmt_init@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x533a): undefined reference tomysql_stmt_param_count@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x540c): undefined reference to mysql_stmt_reset@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x560d): undefined reference tomysql_stmt_param_count@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x5626): undefined reference to mysql_stmt_execute@4' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x5785): undefined reference tomysql_stmt_affected_rows@
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x57b5): undefined reference to mysql_stmt_bind_result@8' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x57d8): undefined reference tomysql_stmt_store_result@4
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x5806): undefined reference to mysql_stmt_bind_result@8' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x584a): undefined reference tomysql_stmt_param_count@4'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x5bca): undefined reference to mysql_stmt_bind_param@8' .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x609d): undefined reference tomysql_stmt_attr_set@12'
    .obj/release_shared/qsql_mysql.o:qsql_mysql.cpp:(.text+0x6172): undefined reference to `mysql_real_escape_string@
    c:/qt/qt5.1.1/tools/mingw48_32/bin/../lib/gcc/i686-w64-mingw32/4.8.0/../../../../i686-w64-mingw32/bin/ld.exe: .ob
    collect2.exe: error: ld returned 1 exit status
    Makefile.Release:80: recipe for target '........\plugins\sqldrivers\qsqlmysql.dll' failed
    mingw32-make[1]: *** [........\plugins\sqldrivers\qsqlmysql.dll] Error 1
    mingw32-make[1]: Leaving directory 'C:/Qt/Qt5.1.1/5.1.1/Src/qtbase/src/plugins/sqldrivers/mysql'
    makefile:38: recipe for target 'release-all' failed
    mingw32-make: *** [release-all] Error 2

    Pleas help me.
    What Im doing wrong?


  • Lifetime Qt Champion

    Hi,

    Looks like your not linking to the MySQL library.

    LIBS+=-LC:/mySQL/lib -lmysql

    should be the correct syntax



  • I know this is a very very old topic, but nonetheless somebody might benefit from this:

    I was able to compile the mysql driver like this:

    • Using Win10 home 64-bit
    • Installed QT 5.15.0 64-bit (mingw)
    • Installed mysql server 8.0.14 (located in C:\Program Files\MySQL\MySQL Server 8.0) and Connector C++ 8.0.15 (located in C:\Program Files\MySQL\Connector C++ 8.0. B. Both are 64-bit.
    • Started QT and opened C:\Qt\5.15.0\Src\qtbase\src\plugins\plugins.pro

    Modify mysql.pro like this (mind the forward slashes this was the last culprit why it didn't work here!):

    TARGET = qsqlmysql
    
    INCLUDEPATH +='C://Program Files//MySQL//MySQL Server 8.0//include'
    DEPENDPATH += 'C://Program Files//MySQL//MySQL Server 8.0//include'
    LIBS += 'C://Program Files//MySQL//MySQL Server 8.0//lib//libmysql.lib'
    
    HEADERS += $$PWD/qsql_mysql_p.h
    SOURCES += $$PWD/qsql_mysql.cpp $$PWD/main.cpp
    
    #QMAKE_USE += mysql
    
    OTHER_FILES += mysql.json
    
    PLUGIN_CLASS_NAME = QMYSQLDriverPlugin
    include(C:\Qt\5.15.0\Src\qtbase\src\plugins\sqldrivers\qsqldriverbase.pri)
    
    • In QT Creator rightclick on the folder "mysql" and select "Build mysql"
    • Make sure to do above in both release and debug

    I found the files I needed in:
    C:\Qt\5.15.0\Src\qtbase\src\plugins\build-sqldrivers-Desktop_Qt_5_15_0_MinGW_64_bit-Debug\plugins\sqldrivers
    C:\Qt\5.15.0\Src\qtbase\src\plugins\build-sqldrivers-Desktop_Qt_5_15_0_MinGW_64_bit-Release\plugins\sqldrivers


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