make的时候错误如下：
../tools/qtextcodec.cpp:870: error: a class-key must be used when declaring a friend
../tools/qtextcodec.cpp:870: error: friend declaration does not name a class or function
../tools/qtextcodec.cpp: In constructor 鈥楺TextCodecFromIODDecoder::QTextCodecFromIODDecoder(const QTextCodecFromIOD*)鈥?
../tools/qtextcodec.cpp:882: error: 鈥楺MultiByteUnicodeTable* QTextCodecFromIOD::to_unicode_multibyte鈥?is private
../tools/qtextcodec.cpp:1135: error: within this context
../tools/qtextcodec.cpp: In member function 鈥榲irtual QString QTextCodecFromIODDecoder::toUnicode(const char*, int)鈥?
../tools/qtextcodec.cpp:882: error: 鈥楺MultiByteUnicodeTable* QTextCodecFromIOD::to_unicode_multibyte鈥?is private
../tools/qtextcodec.cpp:1150: error: within this context
make[1]: *** [qtextcodec.o] Error 1
make[1]: Leaving directory `/usr/local/qt-2.0.2/src/moc'
make: *** [moc] Error 2
请问如何解决
