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

  Controls whether the compiler prints informational diagnostic
  messages when it is unable to generate inline code for a reference
  to an intrinsic routine.  This option only applies to the BLAS
  intrinsics for which inline expansion is supported (all except
  xNRM2 and xROTG), and only if /BLAS=INLINE is in effect.