我是新手。在编译qt的时候出错，信息如下：
In file included from text/qfontengine_ft.cpp:46:
text/qfontengine_ft_p.h:82: warning: `struct QFreetypeFace' only defines a
private destructor and has no friends
text/qfontengine_ft.cpp: In function `HB_Error hb_getSFntTable(void*, unsigned
int, HB_Byte*, HB_UInt*)':
text/qfontengine_ft.cpp:104: warning: unused parameter `void*font'
text/qfontengine_ft.cpp:104: warning: unused parameter `HB_Tag tableTag'
text/qfontengine_ft.cpp:104: warning: unused parameter `HB_Byte*buffer'
text/qfontengine_ft.cpp:104: warning: unused parameter `HB_UInt*length'
text/qfontengine_ft.cpp: In member function `bool
QFreetypeFace::getSfntTable(unsigned int, uchar*, uint*) const':
text/qfontengine_ft.cpp:391: warning: unused parameter `uint tag'
text/qfontengine_ft.cpp:391: warning: unused parameter `uchar*buffer'
text/qfontengine_ft.cpp:391: warning: unused parameter `uint*length'
text/qfontengine_ft.cpp: In member function `bool
QFontEngineFT::init(QFontEngine::FaceId, bool, QFontEngineFT::GlyphFormat)':
text/qfontengine_ft.cpp:708: `FT_Select_Size' undeclared (first use this
function)
text/qfontengine_ft.cpp:708: (Each undeclared identifier is reported only once
for each function it appears in.)
make[1]: *** [.obj/release-shared-emb-x86/qfontengine_ft.o] Error 1
make[1]: Leaving directory `/root/src/qt-embedded-linux-opensource-src-4.5.0-x86/src/gui'
make: *** [sub-gui-make_default-ordered] Error 2
怎么解决这个问题啊？我使用gcc3.4.1。谢谢！
