/sys$common/syshlp/helplib.hlb FORTRAN, Error Messages, Compilation Errors, ALNNOMAT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  SEVERITY:  W

  MESSAGE TEXT:  A lignment settings of common block are inconsistent with
                 previous declaration

  EXPLANATION: Occurs when using CDEC$ OPTIONS/ALIGN (or /WARN=ALIGN)
  if the same COMMON is declared in multiple places within a single
  compilation unit and /ALIGN or /WARN=ALIGN has changed between
  places.  For example:

  CDEC$ OPTIONS /ALIGN=COMMON=NATURAL
        COMMON /COM1/ A,B    ! common elements are naturally aligned
  CDEC$ END OPTIONS

  CDEC$ OPTIONS /ALIGN=COMMON=PACKED
        COMMON /COM1/ C,D    ! common elements are packed
  CDEC$ END OPTIONS

  Note that COMMON declarations can also take place in SAVE and
  VOLATILE statements and in CDEC$ PSECT, CPAR$ PRIVATE and CPAR$
  SHARED directives.  All declarations must be in the scope of a
  consistent setting for alignment and alignment warnings.

  USER ACTION: Modify the program to remove inconsistent alignment directives.