Qt 5.11.0 is built for more than a week (without WebEngine, that doesn't want to build because libc is too old). I was struggling with QtWebKit... The build doesn't want to finish and got killed (with 4GB swap) on Document.cpp (and yes, I have disabled the monolitic built). I have a last try running, not sure what I will try if it still fail (probably try to cut the file, but that complicate). Not sure I want to build a new Qt for a minor bump in the version, unless there is something uber important in the ChangeLog.