VMS Help CC, /VERSION  *Conan The Librarian (sorry for the slow response - running on an old VAX)

     /VERSION
     /NOVERSION (D)

  Directs the compiler to print out the compiler version and
  platform.  The compiler version is the same as in the listing file.

  This qualifier helps you to report what compiler you are using.

  When this qualifier is specified, the compiler just prints its
  version and exits.  No other qualifiers are processed, no source
  file is read, and no object module is produced.

  The syntax for using this qualifier is:

     CC/DECC/VERSION

  The default is /NOVERSION.