Can you add Qt WinExtras to Qt5.1.1?

I grabbed the repo from Gittorious and attempted to build. Got many errors. I saw that there is a setting in qmake.conf that is set for 5.2 i.e. load(qt_build_config) MODULE_VERSION = 5.2 Has anyone successfully built and used this with version 5.1.1? I use a custom build of version 5.1.1 so I would prefer to include WinExtras rather than a long rebuild of 5.2 The custom build is necessary to have a smaller dependency list for deployed apps. Thanks in advance