Unsolved Rebuilding QWebEngine for Netflix support

[maximus]

Hi,

I am trying to follow theses steps to rebuild QWebEngine from source so I can have netflix video playback.
http://blog.qt.io/blog/2016/06/03/netflix-qt-webengine-5-7/?utm_content=35576280&utm_medium=social&utm_source=twitter

The first step is easy, copying the WidevineCDM plugin under your /release folder.
However the second step, rebuilding QWebEngine from source, I am having a hard time do that.
Is it possible that there is an easier step to avoid rebuilding QWebEngine, the documentation says I need to rebuild with this flag
qmake WEBENGINE_CONFIG+=use_proprietary_codecs

Is it possible to have an option to enable or disable this flag without rebuilding everything? .setUsePropretaryCodecs(true) ?
Thanks

[maximus]

It would be nice if we could only drop the codecs like with the plugins, rebuilding from scratch on every OS is kind of a pain.
Thanks for considering.

Doc here:
https://wiki.qt.io/How_to_Try_QtWebEngine
Seems not updated for Windows. I just want to rebuild QWebEngine and not all Qt module.

It would be nice to have a ready to use version already built on Qt website,
or the step to build QWebEngine from source for newbies.
Thanks