[Development] How to get Qt_5.9.1_PRIVATE_API

[Christoph Feck]

On 11.10.2017 08:56, Martin Koller wrote:
> on openSuse 42.2 I have a self-built 5.9.1 version and also the openSuse 5.9.1 installed one.
> For some reason (which is not important for my question) my application picks up the openSuse library
> but fails with the error
> libQt5Core.so.5: version `Qt_5.9.1_PRIVATE_API' not found (required by /usr/lib64/libQt5Quick.so.5)
>
> I just want to know how do I have to configure my self-built Qt so that the missing private_api symbol is included?
>

See patch 'tell-the-truth-about-private-api.patch' at 
https://build.opensuse.org/package/show/KDE:Qt5/libqt5-qtbase