qt-mobility fails to compile (make)

after running configure (and met all dependencies i believe), i encountered this error during make:

qlandmarkfilehandler_lmx_p.h:68: error: forward declaration of 'struct QXmlStreamWriter'
qlandmarkfilehandler_lmx.cpp:930: error: invalid use of incomplete type 'struct QXmlStreamWriter'
qlandmarkfilehandler_lmx_p.h:68: error: forward declaration of 'struct QXmlStreamWriter'
lipo: can't open input file: /var/folders/5V/5V4vr7WoH+0SIBETfcWpb++++TI/Tmp//ccK7yH1u.out (No such file or directory)
make4: *** [../../../build/Debug/qtlandmarks_sqlite_debug/qlandmarkfilehandler_lmx.o] Error 1
make3: *** [debug-all] Error 2
make2: *** [sub-sqlite-make_default-ordered] Error 2
make1: *** [sub-landmarks-make_default] Error 2
make: *** [sub-plugins-make_default-ordered] Error 2

I have tried this both on the tar ball downloaded as well as git clone from gitorious. same error.
i have posted this question on the dev forum and got replies to include <QXmlStreamWriter> in QLandmarkFileHandlerLmx.
I checked the source and the include is already there.