R3018   Dependency does not exist: '<file>'

     Explanation:  You specified a dependency rule containing a
     nonexistent file as a dependency.  RMAKE is, therefore, unable to
     determine whether the target file is out of date.  RMAKE searches the
     current directory only for dependency files unless you define a special
     macro to specify where dependency files are to be found.  See the
     "Program Maintenance-RMAKE.EXE" chapter in the Programming and Utilities
     Guide for more information on these special search macros.

     Action:  Correct and run the make again.