Where can I get the master.dacpac file for SQL Server 2012? I am using Visual Studio 2012 Professional with SQL Server Data Tools with a SQL Server 2012 standard edition database instance.
I have been unable to locate a master.dacpac file on either my development machine or on the server hosting the SQL Server instance. 

How can I obtain this file, so I can get rid of warnings like the following:

SQL71502: Procedure: &lt;ProcedureName&gt; has an unresolved reference to object [sys].[objects]
You should be able to add a Database Reference. Click Project-> Add Database Reference. Click the radio button for System and then master. Code with references to objects in the master db should now build correctly.