Following constants were moved to source file:
Cntbackendsdefs.h:
const int KCntDefaultFieldForCall = 0x10003E70;
const int KCntDefaultFieldForVideoCall = 0x101F85A6;
const int KCntDefaultFieldForEmail = 0x101F85A7;
const int KCntDefaultFieldForMessage = 0x101f4cf1;
const int KCntDefaultFieldForOnlineAccount = 0x2002DC81;
const int KCntDefaultFieldForUrl = 0x20031E4E;

This causes the compilation in the environment fail because the build system fails to update the header and old header is loaded by compiler. Also this is a API compatibility issue, because it has been published already in Qt SDK 1.1.