painting/qrasterizer.cpp: Problems building on AIX 6.1 with xlC 10.1

$ uname -a
AIX near 1 6 000202C2D900
$ bzip2 -dc qt-x11-opensource-src-4.4.3.tar.bz2 | tar xf -
$ cd qt-x11-opensource-src-4.4.3
$ bash ./configure -verbose -release -shared -no-rpath \
-platform aix-xlc
...
xlC_r -c -+ -qstrict -O3 -qthreaded -DQT_SHARED -DQT_BUILD_GUI_LIB -DQT_NO_USING_NAMESPACE -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DPNG_NO_ASSEMBLER_CODE -DQT_RASTER_IMAGEENGINE -DFT2_BUILD_LIBRARY -DFT_CONFIG_OPTION_SYSTEM_ZLIB -DQT_NO_OPENTYPE -DQT_NO_STYLE_MAC -DQT_NO_STYLE_WINDOWSVISTA -DQT_NO_STYLE_WINDOWSXP -DQT_NO_STYLE_WINDOWSCE -DQT_NO_STYLE_WINDOWSMOBILE -DQ_INTERNAL_QAPP_SRC -DQT_NO_DEBUG -DQT_CORE_LIB -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I../../mkspecs/aix-xlc -I. -I../../include/QtCore -I../../include/QtCore -I../../include -I../../include/QtGui -I.rcc/release-shared -I../3rdparty/libpng -I../3rdparty/zlib -I../3rdparty/freetype/src -I../3rdparty/freetype/include -I../3rdparty/freetype/builds/unix -I../3rdparty/harfbuzz/src -Idialogs -I.moc/release-shared -I.uic/release-shared -o .obj/release-shared/qrasterizer.o painting/qrasterizer.cpp
"painting/qrasterizer.cpp", line 318.59: 1540-0274 (S) The name lookup for "xOrder" did not find a declaration.o painting/qrasterizer.cpp
"painting/qrasterizer.cpp", line 318.59: 1540-0274 (S) The name lookup for "xOrder" did not find a declaration.
"painting/qrasterizer.cpp", line 318.59: 1540-1292 (I) Static declarations are not considered for a function call if the function is not qualified.
"painting/qrasterizer.cpp", line 307.6: 1540-0700 (I) The previous message was produced while processing "qScanConvert<QBoolToType<0> >(QScanConverter &, QBoolToType<0>)".
"painting/qrasterizer.cpp", line 381.13: 1540-0700 (I) The previous message was produced while processing "QScanConverter::end()".
"painting/qrasterizer.cpp", line 318.59: 1540-0274 (S) The name lookup for "xOrder" did not find a declaration.
"painting/qrasterizer.cpp", line 318.59: 1540-1292 (I) Static declarations are not considered for a function call if the function is not qualified.
"painting/qrasterizer.cpp", line 307.6: 1540-0700 (I) The previous message was produced while processing "qScanConvert<QBoolToType<1> >(QScanConverter &, QBoolToType<1>)".
"painting/qrasterizer.cpp", line 379.13: 1540-0700 (I) The previous message was produced while processing "QScanConverter::end()".
gmake[1]: *** [.obj/release-shared/qrasterizer.o] Error 1
gmake[1]: Leaving directory `/opt/build/china/qt-x11-opensource-src-4.4.3/src/gui'
gmake: *** [sub-gui-make_default-ordered] Error 2