There were some assumptions that some PCDs and protocols were defined. Check if these requirements are defined; either print a debug message to inform the user or skip the statements that require these PCDs or protocol. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11915 6f19259b-4bc3-4df7-8a09-765794883524