SQLITE undefined reference

[oscar]

Hello,

Having downloaded QT 4.3.1 binaries, sqlite support seems to be natively supported but when I compile my software (which was working with previous build of Qt, but from the sources of Qt, not the binaries...) I now get the message:

g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-rel
oc -Wl,-s -mthreads -Wl -o "release\dopcica.exe" object_script.dopcica.Release
-L"c:\Qt\4.3.1\lib" -lmingw32 -lqtmain -LC:/Qt/4.3.1/plugins/sqldrivers/ -lqsql
ite4 -lQtGui4 -lQtCore4
./release\Consultation.o(.text+0x436):Consultation.c pp: undefined reference to `
_imp___ZN12QSqlDatabaseC1ERKS_'
(...)

Why the symbol _imp___ZN12QSqlDatabaseC1ERKS_ is incorrect???
However, I link qsqlite4 which should resolve that symbol...

Initially, I've added the following to my project file:
QTPLUGIN += qsqlite

Any idea?

Thank you for your help.
Best regards,
Oscar

[jacek]

You're not linking your application with QtSql module. Add QT += sql to your .pro file.

[jpn]

Only core and gui modules are enabled by default. Try adding

QT += sql

to the .pro file.

[oscar]

Thank you for this quick reply!
the compilation is in progress... the answer in a few minutes...

[oscar]

Well, it's better but still don't work.

Now, the driver doesn't load.

When I list the available databases, I get:
QSQLITE
QODBC3
QODBC

But when I try to open a database file, I get:
error on openingriver not loaded Driver not loaded

How can i load the driver...?

Thanks in advance.
Best regards,
Oscar

[oscar]

Oups, it's ok now!

[oscar]

I was adding:
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLite")

instead of:
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE")

Now, everything compiles ok and I manage to open the database file.

Thank you very much jpn and jacek for your help.
Best regards,
Oscar

[oscar]

In a "perfect world", it would be nice that the command:
qmake -project

detects that some of my files include sql and try to open QSQLITE and consequently add automatically the lines:
QTPLUGIN += qsqlite
QT += sql

to the .pro file...
Maybe in the next release of Qt...