我按说明一步一步走， ./configure后，make，出现了预期的错误，然后按预期的方法解决，却出现别的问题了
In file included from text/qfontengine_ft.cpp:48:
text/qfontengine_ft_p.h:80: 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:98: `FT_Load_Sfnt_Table' undeclared (first use this
function)
text/qfontengine_ft.cpp:98: (Each undeclared identifier is reported only once
for each function it appears in.)
text/qfontengine_ft.cpp: In member function `bool
QFreetypeFace::getSfntTable(unsigned int, uchar*, uint*) const':
text/qfontengine_ft.cpp:369: warning: unused parameter `uint tag'
text/qfontengine_ft.cpp:369: warning: unused parameter `uchar*buffer'
text/qfontengine_ft.cpp:369: warning: unused parameter `uint*length'
make[1]: *** [.obj/release-shared/qfontengine_ft.o] Error 1
make[1]: Leaving directory `/root/q4/for_pc/qt-x11-opensource-src-4.4.0/src/gui'make: *** [sub-gui-make_default-ordered] Error 2
这个问题该怎么解决啊，求高手相助
