[Qt-interest] subclassing Sql drivers (linking issue)

Andre Somers andre at familiesomers.nl
Tue Feb 23 16:22:28 CET 2010


Andre Somers wrote:
> Andre Somers wrote:
>   
>> Hi,
>>
>> I am trying to extend the Qt SQL drivers to add some functionality. I 
>> have the thing compiling, but I run into a problem when linking. I get 
>> lots of "undefined reference" errors like these:
>>
>> C:/projects/srtools/common/ExtendedDatabaseDrivers/accessdriver.cpp:124: 
>> undefined reference to `QODBCDriver::open(QString const&, QString 
>> const&, QString const&, QString const&, int, QString const&)'
>>
>> for all the methods that I subclassed (or are done so by moc). Yes, I 
>> have included the Q_OBJECT macro.
>>
>> This particular driver is trying to extend the QODBCDriver to specialize 
>> it for using with Microsoft Access. T
>> The issue *seems* to be that if I include the sql module, I am not there 
>> yet. I guess I have to link to the driver lib itself in some way, but I 
>> don't really see how. However, I may be off the mark.
>>
>> Any hints are appreciated.
>>
>> André
>>   
>>     
> I tried adding the drivers lib to the libs to link with like this:
> LIBS += -lqsqlodbc4 -L$$[QT_INSTALL_PLUGINS]/sqldrivers
>
> However, that did not fix the issue.
>
> André
>   
Nobody?

André



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