compiling interp lib, XCOFF error

I am compiling the new interp library and *.surf.tps programs, on an
RS/6000. The three library directories seem to compile ok, but when I
try to compile r.resample.tps, I get the error:
ERROR: ../interp/LIB.RS6000/libinterp.a not an XCOFF object.

I recall a recent message, in either grassp-list or grassu-list about
this kind of error, but at the time I didn't pay it any attention.
(Email overload.) Unfortunately it must have been so recent that it
is not yet in the archive on moon, which is only up to date to the
end of July.

Can anyone help me? What is an "XCOFF" object? Why is my libinterp.a
not one? I suspect what it means is that libinterp.a didn't get compiled
as a library, and I need to add some compile or link option into the
Gmakefiles in the three library subdirectories, and recompile them.

Tim.

-------------------------------------------------------------------------
Tim Martin * The conception of illocutionary force
Spatial Information Systems * as a unitary disambiguating context for
University of Alberta * the semantic content produces special
martin@ulysses.sis.ualberta.ca * tangles in the case of certain kinds
(403) 492-6586 * of negation. -Cronen et al., 1990
-------------------------------------------------------------------------

  Tim,

  Hi. Some time ago I did posted a large "?" after I got the error
      message very similar to the one you provided. I was
compiling
  C-code for a GRASS application on SGI under IRIX5.x at that time.
  The context of situation was upgrading of IRIX4.x to IRIX5.x while
  GRASS remained IRIX4.x-compiled. So, loader ld gave an error when
tried
  to load one of the libraries (licoornv.a). Then recompilation of GRASS
  helped (In fact this was a suggestion I received from grassp-list
  without any particular definition of XCOFF (and COFF, and ELF)
objects.)

  This is why I suggest you to check the versions, upgrades, etc. of
      operational system and GRASS and do not provide info
about XCOFF objects.

  Good luck,

  -Vitaly Brukhman
   New York University