How to install MySql Driver?

whitesong

Hi SGaist.
my 'libmysql.ilb' file is in this directory:
C:\Program Files\MySQL\MySQL Server 5.6\lib\libmysql.lib
and my 'include' folder in this:
C:\Program Files\MySQL\MySQL Server 5.6\include
so
I changed MySql path to this:

@C:\QtSDK\QtSources\4.8.1\src\plugins\sqldrivers\mysql>qmake "INCLUDEPATH+=C:\PROGRA~1\MySQL\MYSQLS~1.6\include" "LIBS+=C:\PROGRA~1\MySQL\MYSQLS~1.6\LIB\LIBMYS~1.lib" mysql.pro@
although this code show me the same Error, may be I wrote wrong 8.3 name.
it's better to see if my path is correct or not

SGaist

Just to be sure, what compiler are you using ?

whitesong

OK. my compiler is MinGW

SGaist

Then you have to follow that set of "instructions":http://qt-project.org/doc/qt-4.8/sql-driver.html#how-to-build-the-mysql-driver-for-mingw-users

whitesong

my compiler is installed with qt creator in default setting, do you think is necessary download MinGW in order to this instructions?

SGaist

No need to download another MinGW, use the one that came with Qt

whitesong

I skip this part:
(Open the DOS prompt, go to C:\MySQL\MySQL51\lib\opt, and run the following commands:
reimp -d libmysql.lib
dlltool -k -d libmysql.def -l libmysql.a)
Because, it shows this message:

@C:\PROGRA~1\MySQL\MYSQLS~1.6\lib>reimp -d libmysql.lib
'reimp' is not recognized as an internal or external command,
operable program or batch file.@

also I don't have 'opt' folder, I just have 'C:\Program Files\MySQL\MySQL Server 5.6\lib\libmysql.lib'
Then, I wrote this part:
@C:\QtSDK\QTSOUR~1\4.8.1>configure.exe -debug-and-release -platform win32-g++ -qt
-sql-mysql -l mysql -I C:\PROGRA~1\MySQL\MYSQLS~1.6\include -L C:\PROGRA~1\
MySQL\MYSQLS~1.6\lib@
and after long time this error appeared:
@mingw32-make[2]: *** [../../lib/QtSqld4.dll] Error 1
mingw32-make[2]: Leaving directory c:/QtSDK/QTSOUR~1/4.8.1/src/sql' mingw32-make[1]: *** [debug-all] Error 2 mingw32-make[1]: Leaving directory c:/QtSDK/QTSOUR~1/4.8.1/src/sql'
mingw32-make: *** [sub-sql-sub_src_target_ordered] Error 2@

I think these error are for my version of Qt4.8.1 and mySql5.6 because these instructions are provided for MySql5.1 and Qt4.6.2, am I right?

SGaist

You need to install reimp for MinGW, the paths might have changed in between but the basics stay the same

whitesong

oh you're right. But if I run
@reimp -d libmysql.lib@

will libmysql.def and libmysql.a be created?
Because I don't have them now in order to rest of the process.

SGaist

reimp to create libmysql.def
dlltool to create libmysql.a

mohsen

so you haven't followed the instructions carefully. all the steps mentioned by SGaist was completely described.

whitesong

this is the first time i hear about rimp

mohsen

checkout http://www.qtexperts.ir/wiki/index.xhtml/ساخت_درایور_MySQL for build instructions in Persian

whitesong

I've done both of your ways, I succeeded to make libmysql.def and libmysql.a, Then I ran this code
@C:\QtSDK\QtSources\4.8.1\src\plugins\sqldrivers\mysql>configure.exe -debug-and-release -platform win32-g++ -qt-sql-mysql -l mysql -I C:\Program Files\MySQL\MySQL Server 5.6\include -L C:\Program Files\MySQL\MySQL Server 5.6\lib@
(I used path with space because of -I and -L) after a while it shows many messages some of them is:

@c:/QtSDK/mingw/bin/mingw32-make -f Makefile.Debug all
mingw32-make[3]: Entering directory c:/QtSDK/QtSources/4.8.1/src/imports/shaders'
mingw32-make[3]: Nothing to be done for all'. mingw32-make[3]: Leaving directory c:/QtSDK/QtSources/4.8.1/src/imports/shaders'
c:/QtSDK/mingw/bin/mingw32-make -f Makefile.Release all
mingw32-make[3]: Entering directory c:/QtSDK/QtSources/4.8.1/src/imports/shaders' mingw32-make[3]: Nothing to be done for all'.
mingw32-make[3]: Leaving directory c:/QtSDK/QtSources/4.8.1/src/imports/shaders' mingw32-make[2]: Leaving directory c:/QtSDK/QtSources/4.8.1/src/imports/shaders'
mingw32-make[1]: Leaving directory `c:/QtSDK/QtSources/4.8.1/src/imports'@
i ignored them and ran next step
@C:\QtSDK\QtSources\4.8.1\src\plugins\sqldrivers\mysql>qmake "INCLUDEPATH+=C:\PR
OGRA~1\MySQL\MYSQLS~1.6\include" "LIBS+=-L. mysql" mysql.pro@

and i saw no error, but mysql driver wasn't installed.
i decided use Mohsen's method, with ran this method i have libqsqlmysql4.a
libqsqlmysqld4.a
qsqlmysql4.dll
qsqlmysqld4.dll
In "C:\QtSDK\QtSources\4.8.1\plugins\sqldrivers" i copied them to my project but when i run this code
@qDebug() << QSqlDatabase::drivers();@
i don't see qmysql driver

mohsen

if you're running your application through QtCreator you won't need to copy them into your app dir. it's just enough having them in "C:\QtSDK\QtSources\4.8.1\plugins\sqldrivers" just making sure your other Qt libs are in "C:\QtSDK\QtSources\4.8.1\lib" and this is the path where you've defined in QTDIR. otherwise if this is only the path of sources directory then you must move the result binaries onto the main Qt directory path/plugins/sqldrivers.
if you're trying to make a release then you'll need to have qmysql.dll and libmysql.dll in "[YOUR EXE PATH]/sqldrivers/"

whitesong

Ok, but there are many files in my “C:\QtSDK\QtSources\4.8.1\lib”, and in my path/plugins/sqldrivers these files exist:(libqsqlite4.a, libqsqlited4.a, libqsqlmysql4.a, libqsqlmysqld4.a, qsqlite4.dll, qsqlited4.dll, libqsqlmysql4.a, qsqlmysqld4.dll) and empty 'mysql' folder.
are those enough?
I need to say i just serch 'QMYSQLDriver' then i find it in few directories:
C:\QtSDK\Desktop\Qt\4.7.4\mingw\include\QtSql
C:\QtSDK\Desktop\Qt\4.8.1\mingw\include\QtSql
C:\QtSDK\QtSources\4.8.1\include\QtSql
C:\QtSDK\Simulator\Qt\mingw\include\QtSql
can I use them? how do I use them?

mohsen

however Qt keeps binary compatibility but it's better to use plugins built with same version. I can't further help you making that plugin available in your project since i don't know how Qt's configured and defined on your system.
i just can point you to review the path of Qt version in use both on Environment Variables/QTDIR and QtCreator/options/build&run/Qt Versions once again.

whitesong

ok thanks all of you.

quinhox5

Hey guys, i'm having a similar problem and my context is very similar.

I'm trying to compile the mysql driver using qt5 and mysqlserver 5.6, using mingw too and tryed to follow the tutorial "here":http://qt-project.org/doc/qt-4.8/sql-driver.html#how-to-build-the-qmysql-plugin-on-windows. I did the reimp sucessfully creating the libmysql.a, i used the configure command sucessfully, but got an error trying to compile using mingw32-make sub-src. The errors are undefined references when trying to compile the mysql module.

configure.exe -debug-and-release -platform win32-g++ -qt-sql-mysql -l mysql -I "C:\PROGRA~1\MySQL\MYSQLS~1.6\include" -L "C:\PROGRA~1\MySQL\MYSQLS~1.6\LIB"

mingw32-make sub-src
@mingw32-make[3]: Entering directory 'C:/Users/Hugo/Downloads/qt-everywhere-opensource-src-5.0.1/qtbase/src/sql'
g++ -shared -Wl,--out-implib,C:\Users\Hugo\Downloads\qt-everywhere-opensource-src-5.0.1\qtbase\lib\libQt5Sqld.a -o ....\lib\Qt5Sqld.dll object_script.Qt5Sqld.Debug -lmysql -LC:/PROGRA~1/MySQL/MYSQLS
~1.6/LIB -LC:/Users/Hugo/Downloads/qt-everywhere-opensource-src-5.0.1/qtbase/lib -lQt5Cored .obj\debug_shared\Qt5Sqld_resource_res.o
./.obj\debug_shared\qsql_mysql.o: In function codec': C:\Users\Hugo\Downloads\qt-everywhere-opensource-src-5.0.1\qtbase\src\sql/drivers/mysql/qsql_mysql.cpp:223: undefined reference to mysql_character_set_name@4'
./.obj\debug_shared\qsql_mysql.o: In function qMakeError': C:\Users\Hugo\Downloads\qt-everywhere-opensource-src-5.0.1\qtbase\src\sql/drivers/mysql/qsql_mysql.cpp:234: undefined reference to mysql_error@4'
C:\Users\Hugo\Downloads\qt-everywhere-opensource-src-5.0.1\qtbase\src\sql/drivers/mysql/qsql_mysql.cpp:237: undefined reference to mysql_errno@4' ./.obj\debug_shared\qsql_mysql.o: In function qMakeStmtError':
C:\Users\Hugo\Downloads\qt-everywhere-opensource-src-5.0.1\qtbase\src\sql/drivers/mysql/qsql_mysql.cpp:309: undefined reference to mysql_stmt_error@4' C:\Users\Hugo\Downloads\qt-everywhere-opensource-src-5.0.1\qtbase\src\sql/drivers/mysql/qsql_mysql.cpp:312: undefined reference to mysql_stmt_errno@4'
./.obj\debug_shared\qsql_mysql.o: In function ZN19QMYSQLResultPrivate12bindInValuesEv': C:\Users\Hugo\Downloads\qt-everywhere-opensource-src-5.0.1\qtbase\src\sql/drivers/mysql/qsql_mysql.cpp:358: undefined reference to mysql_stmt_result_metadata@4'
@

quinhox5

Anyone?

I guess my problem is with the reimp not generating a usable libmysql.a, when i use the reimp in the mingw-utils0.3 i got the output just fine, but all the procedures as i described before fail. When downloading the last version of mingw-utils(0.4) i try to use de reimp but it says libmysql.lib is corrupted or something... so i guess this is where the problem come from.

Any thoughts? help?