QT5 Build Fails qboxlayout.h invalid use of incomplete Struct

When building the latest QT5 from gitorioous. The build fails with the following error.

stractformbuilder.o ..\..\tools\uilib\abstractformbuilder.cpp
In file included from ..\..\include/QtGui/qboxlayout.h:1,
from ..\..\include/QtGui/../../src/gui/kernel/qlayout.h:50,
from ..\..\include/QtGui/qlayout.h:1,
from ..\..\include/QtGui/../../src/gui/kernel/qgridlayout.h:45,

from ..\..\include/QtGui/qgridlayout.h:1,
from ..\..\include/QtGui/QGridLayout:1,
from ..\..\tools\uilib\abstractformbuilder.cpp:64:
..\..\include/QtGui/../../src/gui/kernel/qboxlayout.h:62: error: invalid use of
incomplete type 'struct QLayout'
..\..\tools\uilib\/abstractformbuilder.h:70: error: forward declaration of 'stru
ct QLayout'
..\..\include/QtGui/../../src/gui/kernel/qboxlayout.h: In member function 'QBoxL
ayoutPrivate* QBoxLayout::d_func()':
..\..\include/QtGui/../../src/gui/kernel/qboxlayout.h:64: error: 'd_ptr' was not
declared in this scope
..\..\include/QtGui/../../src/gui/kernel/qboxlayout.h: In member function 'const
QBoxLayoutPrivate* QBoxLayout::d_func() const':
..\..\include/QtGui/../../src/gui/kernel/qboxlayout.h:64: error: 'd_ptr' was not
declared in this scope
mingw32-make[3]: *** [tmp/obj/debug_shared/abstractformbuilder.o] Error 1
mingw32-make[3]: Leaving directory `C:/Users/BreedOne/gitrepos/qt5/qtbase/src/ui
tools'
mingw32-make[2]: *** [debug-all] Error 2
mingw32-make[2]: Leaving directory `C:/Users/BreedOne/gitrepos/qt5/qtbase/src/ui
tools'
mingw32-make[1]: *** [sub-uitools-make_default-ordered] Error 2
mingw32-make[1]: Leaving directory `C:/Users/BreedOne/gitrepos/qt5/qtbase'
mingw32-make: *** [module-qtbase-make_default] Error 2