xkb compiladion fails on 32 bit build

g++ -c -m32 -pipe -Werror -Wno-error=cpp -Wno-error=deprecated-declarations -Wno-error=strict-overflow -g -fvisibility=hidden -fvisibility-inlines-hidden -std=c+0x -fno-exceptions -Wall -W -D_REENTRANT -fPIC -DQT_NO_LIBUDEV -DXCB_USE_RENDER -DDFLT_XKB_CONFIG_ROOT=\"/usr/share/X11/xkb\" -DDEFAULT_XKB_RULES=\"evdev\" -DDEFAULT_XKB_MODEL=\"pc105\" -DDEFAULT_XKB_LAYOUT=\"us\" -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_PLUGIN -DQT_PLATFORMSUPPORT_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../../../mkspecs/linux-g+-32 -I. -I../../../3rdparty/xcb/include -I../../../3rdparty/xcb/sysinclude -I../../../3rdparty/xkbcommon -I../../../3rdparty/xkbcommon/src -I../../../3rdparty/xkbcommon/src/xkbcomp -I../../../../include -I../../../../include/QtPlatformSupport -I../../../../include/QtPlatformSupport/5.2.0 -I../../../../include/QtPlatformSupport/5.2.0/QtPlatformSupport -I../../../../include/QtGui -I../../../../include/QtGui/5.2.0 -I../../../../include/QtGui/5.2.0/QtGui -I../../../../include/QtCore -I../../../../include/QtCore/5.2.0 -I../../../../include/QtCore/5.2.0/QtCore -I.moc/debug-shared -o .obj/debug-shared/qxcbbackingstore.o qxcbbackingstore.cpp
In file included from qxcbconnection.h:60:0,
from qxcbobject.h:45,
from qxcbbackingstore.h:49,
from qxcbbackingstore.cpp:42:
../../../3rdparty/xcb/include/xcb/xkb.h:118:5: error: this decimal constant is unsigned only in ISO C90 [-Werror]
In file included from qxcbconnection.h:60:0,
from qxcbobject.h:45,
from qxcbwindow.h:52,
from qxcbwindow.cpp:42:
../../../3rdparty/xcb/include/xcb/xkb.h:118:5: error: this decimal constant is unsigned only in ISO C90 [-Werror]