Mac Qt5 build from git - Qt WebKit fails to build

[friemelaar]

Using Qt SDK 1.2 (4.8.0 mac osx 10.7.3)
following build instructions from: http://qt-project.org/wiki/Building_Qt_5_from_Git

build is failing in QtWebKit with the following command:
perl Tools/Scripts/build-webkit --qt --release --makeargs=$MAKEFLAGS

http://pastebin.com/zx2MCMEE

I have been trying for several days now to build it, also tried on Windows Qt SDK 1.2 4.8.0 msvc2008 and mingw - different failures.