QT and SQLITE issue during construction

Question

I am developing a simple application to use sqlite, the problem is that the following code

/* ... */ QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE"); db.setDatabaseName("hellogoodbye"); if (!db.open()) { QMessageBox::critical(0, qApp->tr("Impossibile aprire il database"), qApp->tr("Non è stato possibile aprire il" "database"), QMessageBox::Cancel);} 

give me:

 C:\Qt\2010.04\August-build-desktop/../August/main.cc:17: undefined reference to `_imp___ZN12QSqlDatabase17defaultConnectionE' C:\Qt\2010.04\August-build-desktop/../August/main.cc:17: undefined reference to `_imp___ZN12QSqlDatabase11addDatabaseERK7QStringS2_' C:\Qt\2010.04\August-build-desktop/../August/main.cc:17: undefined reference to `_imp___ZN12QSqlDatabaseD1Ev' C:\Qt\2010.04\August-build-desktop/../August/main.cc:18: undefined reference to `_imp___ZN12QSqlDatabase15setDatabaseNameERK7QString' C:\Qt\2010.04\August-build-desktop/../August/main.cc:19: undefined reference to `_imp___ZN12QSqlDatabase4openEv' C:\Qt\2010.04\August-build-desktop/../August/main.cc:27: undefined reference to `_imp___ZN12QSqlDatabaseD1Ev' C:\Qt\2010.04\August-build-desktop/../August/main.cc:27: undefined reference to `_imp___ZN12QSqlDatabaseD1Ev' 

I am using QTCreator. Can anybody help me?

Answer 1

Have you added QT += sql to the project file?