Hi all,

I'm working on a library that (optionally) depends on QSerialPort.

This library should also compile on Qt 4, so I did the following in the project file:

greaterThan(QT_MAJOR_VERSION, 4) {
        QT += serialport
} else {
        CONFIG += serialport
}

Thats fine so far, but if QSerialPort is not installed for the corresponding Qt4 version, I'd like to get a message during the qmake run.

What's the easiest way to do this with qmake?

Best regards,
Andre
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