交叉编译Qt5.0.2，使用的是Arm-GCC4.5.1，出现如下错误LOG：大神们救救我！！！
XIMITY_EVENTS=0 -DENABLE_QUOTA=0 -DENABLE_SCRIPTED_SPEECH=0 -DENABLE_SHADOW_DOM=0 -DENABLE_STYLE_SCOPED=0 -DENABLE_SVG_DOM_OBJC_BINDINGS=0 -DENABLE_TEXT_AUTOSIZING=0 -DENABLE_TEXT_NOTIFICATIONS_ONLY=0 -DENABLE_TOUCH_ICON_LOADING=0 -DENABLE_VIBRATION=0 -DENABLE_VIDEO=0 -DENABLE_VIDEO_TRACK=0 -DENABLE_WEBGL=0 -DENABLE_WEB_AUDIO=0 -DENABLE_XSLT=0 -DBUILDING_WTF -DBUILDING_WEBKIT -DQT_ASCII_CAST_WARNINGS -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_CORE_LIB -I/opt/qt-install/qt-everywhere-opensource-src-5.0.2/qtbase/mkspecs/linux-arm-gnueabi-g++ -I. -I. -Iwtf -I../../Source -I/opt/qt-install/qt-everywhere-opensource-src-5.0.2/qtwebkit/Source/include -I/opt/qt-install/qt-everywhere-opensource-src-5.0.2/qtscript/include -I/opt/qt-install/qt-everywhere-opensource-src-5.0.2/qtscript/include/QtScript -I/opt/qt-install/qt-everywhere-opensource-src-5.0.2/qtbase/include -I/opt/qt-install/qt-everywhere-opensource-src-5.0.2/qtbase/include/QtCore -I.moc/release-shared -o .obj/release-shared/wtf/DateMath.o wtf/DateMath.cpp
In file included from ./wtf/unicode/Unicode.h:34:0,
from ./wtf/text/ASCIIFastPath.h:30,
from ./wtf/text/WTFString.h:28,
from wtf/DateMath.h:54,
from wtf/DateMath.cpp:73:
./wtf/unicode/icu/UnicodeIcu.h:27:27: fatal error: unicode/uchar.h: No such file or directory
compilation terminated.
make[2]: *** [.obj/release-shared/wtf/DateMath.o] 错误 1
make[2]: Leaving directory `/opt/qt-install/qt-everywhere-opensource-src-5.0.2/qtwebkit/Source/WTF'
make[1]: *** [sub-Source-WTF-WTF-pro-make_first-ordered] 错误 2
make[1]: Leaving directory `/opt/qt-install/qt-everywhere-opensource-src-5.0.2/qtwebkit'
make: *** [module-qtwebkit-make_first] 错误 2
