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  1. 25th September 2010, 18:55 #1
    tbscope
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    Default Re: Can't build Qt with MySQL

    One question: What do QNetworkReply and Qt Webkit have to do with the MySql plugin?

    You might want to follow this guide:
    http://doc.qt.nokia.com/4.7/sql-driver.html
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  2. The following user says thank you to tbscope for this useful post:

    Tottish (26th September 2010)
  3. 26th September 2010, 18:13 #2
    Tottish
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    Default Re: Can't build Qt with MySQL

    Thanks alot for that guide!
    Followed the part on "How to build with minGW" (except that I have the complete install with the SDK and not only the sourcefiles) and when I run "mingw32-make sub-src" it starts working and continues for an hour or so and then this comes up:

    Qt Code: 
    1. g++ -c -O2 -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT
    2. -DQT_MOC -DQT_BOOTSTRAPPED -DQT_LITE_UNICODE -DQT_TEXTCODEC -DQT_NO_CAST_FROM_AS
    3. CII -DQT_NO_CAST_TO_ASCII -DQT_NO_CODECS -DQT_NO_DATASTREAM -DQT_NO_GEOM_VARIANT
    4.  -DQT_NO_LIBRARY -DQT_NO_QOBJECT -DQT_NO_STL -DQT_NO_SYSTEMLOCALE -DQT_NO_TEXTST
    5. REAM -DQT_NO_THREAD -DQT_NO_UNICODETABLES -DQT_NO_USING_NAMESPACE -DQT_NODLL -I"
    6. c:\MySQL\include" -I"." -I"." -I"..\..\..\include" -I"..\..\..\include\QtCore" -
    7. I"..\..\..\include\QtXml" -I"..\..\xml" -I"..\..\..\mkspecs\win32-g++" -o releas
    8. e\token.o token.cpp
    9. g++ -c -O2 -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT
    10. -DQT_MOC -DQT_BOOTSTRAPPED -DQT_LITE_UNICODE -DQT_TEXTCODEC -DQT_NO_CAST_FROM_AS
    11. CII -DQT_NO_CAST_TO_ASCII -DQT_NO_CODECS -DQT_NO_DATASTREAM -DQT_NO_GEOM_VARIANT
    12.  -DQT_NO_LIBRARY -DQT_NO_QOBJECT -DQT_NO_STL -DQT_NO_SYSTEMLOCALE -DQT_NO_TEXTST
    13. REAM -DQT_NO_THREAD -DQT_NO_UNICODETABLES -DQT_NO_USING_NAMESPACE -DQT_NODLL -I"
    14. c:\MySQL\include" -I"." -I"." -I"..\..\..\include" -I"..\..\..\include\QtCore" -
    15. I"..\..\..\include\QtXml" -I"..\..\xml" -I"..\..\..\mkspecs\win32-g++" -o releas
    16. e\main.o main.cpp
    17. g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-rel
    18. oc -Wl,-s -Wl,-subsystem,console -mthreads -Wl -o ..\..\..\bin\moc.exe release/m
    19. oc.o release/preprocessor.o release/generator.o release/parser.o release/token.o
    20.  release/main.o  -L"c:\Qt\2010.05\qt\src\tools\bootstrap\release" -lbootstrap -l
    21. user32 -lmysql -LC:\MySQL\lib\opt
    22. c:/qt/2010.05/mingw/bin/../lib/gcc/mingw32/4.4.0/../../../../mingw32/bin/ld.exe:
    23.  cannot find -lmysql
    24. collect2: ld returned 1 exit status
    25. mingw32-make[2]: *** [..\..\..\bin\moc.exe] Error 1
    26. mingw32-make[2]: Leaving directory `c:/Qt/2010.05/qt/src/tools/moc'
    27. mingw32-make[1]: *** [release] Error 2
    28. mingw32-make[1]: Leaving directory `c:/Qt/2010.05/qt/src/tools/moc'
    29. mingw32-make: *** [sub-moc-sub_src_target_ordered] Error 2
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    "cannot find -lmysql"
    Have something gone wrong with the INCLUDEPATH-stuff or what? What is -lmysql exactly? A file?

    ************************************************** ******

    When I follow what's under "How to Build the QMYSQL Plugin on Windows" I first (when running qmake) get:

    Qt Code: 
    1. c:\Qt\2010.05\qt\src\plugins\sqldrivers\mysql>qmake "INCLUDEPATH+=C:\MySQL\inclu
    2. de" "LIBS+=C:\MYSQL\lib\opt\libmysql.lib" mysql.pro
    3. WARNING: (internal):1: Unescaped backslashes are deprecated.
    4. WARNING: (internal):1: Unescaped backslashes are deprecated.
    5. WARNING: (internal):1: Unescaped backslashes are deprecated.
    To copy to clipboard, switch view to plain text mode 

    Do I have to do something about that? What does it mean? I need backslashes to describe the path, don't I?

    And when I run nmake I get:

    Qt Code: 
    1. g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_S
    2. UPPORT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_DLL -DQT_PLUGIN -DQT_S
    3. QL_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -I"..\..\..\..\include\QtCore" -I"..\..
    4. \..\..\include\QtSql" -I"..\..\..\..\include" -I"c:\MySQL\include" -I"c:\MySQL\i
    5. nclude" -I"..\..\..\..\include\ActiveQt" -I"tmp\moc\debug_shared" -I"..\..\..\..
    6. \mkspecs\win32-g++" -o tmp\obj\debug_shared\main.o main.cpp
    7.         C:\Qt\2010.05\qt\bin\moc.exe -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_NO_CA
    8. ST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_DLL -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_
    9. LIB -DQT_THREAD_SUPPORT -I"..\..\..\..\include\QtCore" -I"..\..\..\..\include\Qt
    10. Sql" -I"..\..\..\..\include" -I"c:\MySQL\include" -I"c:\MySQL\include" -I"..\..\
    11. ..\..\include\ActiveQt" -I"tmp\moc\debug_shared" -I"..\..\..\..\mkspecs\win32-g+
    12. +" -D__GNUC__ -DWIN32 ..\..\..\sql\drivers\mysql\qsql_mysql.cpp -o tmp\moc\debug
    13. _shared\qsql_mysql.moc
    14. C:\Qt\2010.05\qt\bin\moc.exe är inte ett internt kommando, externt kommando,
    15. program eller kommandofil.
    16. NMAKE : fatal error U1077: 'C:\Qt\2010.05\qt\bin\moc.exe' : return code '0x1'
    17. Stop.
    18. NMAKE : fatal error U1077: '"D:\Program Files (x86)\Microsoft Visual Studio 9.0\
    19. VC\bin\nmake.exe"' : return code '0x2'
    20. Stop.
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    and sure enough, there is no moc.exe in the Qt\bin folder. Is that wrong?

    This is tricky! But I guess we're all n00bs in the beginning! =)
    Extremely grateful for fast help!

    Have a good one!
    /Tottish
    Last edited by Tottish; 26th September 2010 at 18:30.
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  4. 29th September 2010, 09:46 #3
    Tottish
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    Default Re: Can't build Qt with MySQL

    OK, so I'm trying to follow the "How to build the MySQL driver for MinGW users" on another system (XP SP3) and I actually get past the step "mingw32-make sub-src" though it took a good 14 hours. But instead I get stuck on the next step where I try to qmake the mysql drivers.
    This is what I get:
    Qt Code: 
    1. C:\Qt\4.6.2\src\plugins\sqldrivers\mysql>qmake "INCLUDEPATH+=C:\MySQL\MySQL51\in
    2. clude" "LIBS+=-L. mysql" mysql.pro
    3. WARNING: (internal):1: Unescaped backslashes are deprecated.
    4. WARNING: (internal):1: Unescaped backslashes are deprecated.
    5. WARNING: (internal):1: Unescaped backslashes are deprecated.
    To copy to clipboard, switch view to plain text mode 
    And the .dll's and .a's do not show up in the specified folder. I tried searching but they are nowhere to be found.

    So what's wrong here? Again I ask what the warnings mean? Why don't I get an error if the drivers are not made?

    Would be extremely grateful for some help on this one... I'm Totally confused.
    Cheers
    /Tottish
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  5. 29th September 2010, 14:42 #4
    Tottish
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    Default Re: Can't build Qt with MySQL

    Yippie!
    Manged to create the dlls with nmake. Running smooth now!
    Thanks for your support!
    /Tottish
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