[Qt-mobility-feedback] Reference to ‘QNetworkConfiguration’ is ambiguous when compiling for Nokia SDK simulator.

[Olivier Fauchon]

On 07/15/2010 02:50 AM, Aaron McCarthy wrote:
> Hi,
>
> On Wednesday 14 July 2010 23:40:17 ext Olivier Fauchon wrote:
>    
>> But it fails when target is Nokia Simulator from Nokia SDK , with the
>> following error:
>>
>> ../OFLocator/OFlocator.cpp:209:32: error: template argument 1 is invalid
>> ../OFLocator/OFlocator.cpp:209:52: error: invalid type in declaration
>> before ‘=’ token
>> ../OFLocator/OFlocator.cpp:209:87: error: cannot convert
>> ‘QList<QtMobility::QNetworkConfiguration>’ to ‘int’ in initialization
>> ../OFLocator/OFlocator.cpp:210:31: error: request for member ‘isEmpty’
>> in ‘allConfigurations’, which is of non-class type ‘int’
>> ../OFLocator/OFlocator.cpp:212:9: error: reference to
>> ‘QNetworkConfiguration’ is ambiguous
>> ../../../../NokiaQtSDK/Simulator/Qt/gcc/include/QtNetwork/qnetworkaccessman
>> ager.h:65:7: error: candidates are: struct QNetworkConfiguration
>> ../../../../NokiaQtSDK/Simulator/Qt/gcc/include/QtNetwork/qnetworkconfigura
>> tion.h:72:1: error: class QtMobility::QNetworkConfiguration
>> ../OFLocator/OFlocator.cpp:212:31: error: expected ‘;’ before ‘config’
>> ../OFLocator/OFlocator.cpp:213:34: error: ‘config’ was not declared in
>> this scope
>> ../OFLocator/OFlocator.cpp: At global scope:
>> ../OFLocator/OFlocator.cpp:463:6: warning: unused parameter ‘requestId’
>> ../OFLocator/OFlocator.cpp:463:6: warning: unused parameter ‘error’
>>      
>  From the build log you are building against a pre-released version of Qt 4.7.
> The bearer management classes are present in both mobility and Qt 4.7.  It is
> recommended that if you are building against Qt 4.7 that you use the bearer
> classes in Qt as they superceed the ones in Qt Mobility.  To ensure that you
> are using the bearer classes from Qt remove "bearer" from the MOBILITY
> variable in your .pro file.
>
> What is causing the build failure in this case is that the compiler is unable
> to disambiguate between the declaration of QNetworkConfiguration in the
> qnetworkaccessmanager.h file (always uses the Qt version) and the actual
> definition in qnetworkconfiguration.h (the mobility version).  Possibly
> because you have a "using namespace QtMobility" somewhere in your code (or
> from a header file).
>
> To fixed the build either use the Qt version or if you must use the mobility
> version explicity specify the namespace of the QNetworkConfiguration class,
> change:
>
> QList<QNetworkConfiguration>  allConfigurations = ...
>
> to
>
> QList<QtMobility::QNetworkConfiguration>  allConfigurations = ...
>
>    

That worked fine! thanks very much !

Olivier
> I cannot explain why it builds on Maemo 5 while fails on the Qt Simulator,
> unless the Qt versions in the two build environments are different.
>
> Cheers,
>
>