主要用strrchr函數，從類型‘const char*’到類型‘char*’的轉換無效，新版本g++不支持報錯了。
錯誤1：
backend/vobject.cpp: In function ‘VObject* addGroup(VObject*, const char*)’:
backend/vobject.cpp:419: error: invalid conversion from ‘const char*’ to ‘char*’
修改/x86-qtopia-2.2.0/qtopia/src/libraries/qtopia/backend/vobject.cpp:419行
char *dot = strrchr(g,'.');
爲 char *dot = (char*)strrchr(g,'.');
錯誤2：
wavplugin.cpp: 在成員函數‘virtual bool WavPlugin::isFileSupported(const QString&)’中:
wavplugin.cpp:435:45: 錯誤：從類型‘const char*’到類型‘char*’的轉換無效
修正/x86-qtopia-2.2.0/qtopia/src/plugins/codecs/wavplugin/wavplugin.cpp:435行
char *ext = strrchr( path.latin1(), '.' );
爲 char *ext = (char*)strrchr( path.latin1(), '.' );
錯誤3：
/usr/bin/ld: .obj/release-shared/transferserver.o: undefined reference to symbol 'crypt@@GLIBC_2.0'
/usr/bin/ld: note: 'crypt@@GLIBC_2.0' is defined in DSO /lib/libcrypt.so.1 so try adding it to the linker command line
這個問題發現用了crypt函數 而沒使用-lcrypt， qtopia-2.2.0-FriendlyARM/qtopia/configure 1372行加入
print CONFIG_PRI "LIBS+=-lcrypt\n";
如下:
print CONFIG_PRI "QTOPIA_FONT_SIZES=$opt_fontsizes\n";
print CONFIG_PRI "QTOPIA_FONT_FAMILIES=$opt_fontfamilies\n";
print CONFIG_PRI "LIBS+=-lcrypt\n";