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diff --git a/rts/gmp/mpz/gcdext.c b/rts/gmp/mpz/gcdext.c
deleted file mode 100644
index 3ba04c8..0000000
--- a/rts/gmp/mpz/gcdext.c
+++ /dev/null
@@ -1,137 +0,0 @@
-/* mpz_gcdext(g, s, t, a, b) -- Set G to gcd(a, b), and S and T such that
-   g = as + bt.
-
-Copyright (C) 1991, 1993, 1994, 1995, 1996, 1997, 2000 Free Software
-Foundation, Inc.
-
-This file is part of the GNU MP Library.
-
-The GNU MP Library is free software; you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as published by
-the Free Software Foundation; either version 2.1 of the License, or (at your
-option) any later version.
-
-The GNU MP Library is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
-License for more details.
-
-You should have received a copy of the GNU Lesser General Public License
-along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
-the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-MA 02111-1307, USA. */
-
-#include <stdio.h> /* for NULL */
-#include "gmp.h"
-#include "gmp-impl.h"
-
-void
-#if __STDC__
-mpz_gcdext (mpz_ptr g, mpz_ptr s, mpz_ptr t, mpz_srcptr a, mpz_srcptr b)
-#else
-mpz_gcdext (g, s, t, a, b)
-     mpz_ptr g;
-     mpz_ptr s;
-     mpz_ptr t;
-     mpz_srcptr a;
-     mpz_srcptr b;
-#endif
-{
-  mp_size_t asize, bsize, usize, vsize;
-  mp_srcptr ap, bp;
-  mp_ptr up, vp;
-  mp_size_t gsize, ssize, tmp_ssize;
-  mp_ptr gp, sp, tmp_gp, tmp_sp;
-  mpz_srcptr u, v;
-  mpz_ptr ss, tt;
-  __mpz_struct stmp, gtmp;
-  TMP_DECL (marker);
-
-  TMP_MARK (marker);
-
-  /* mpn_gcdext requires that U >= V.  Therefore, we often have to swap U and
-     V.  This in turn leads to a lot of complications.  The computed cofactor
-     will be the wrong one, so we have to fix that up at the end.  */
-
-  asize = ABS (SIZ (a));
-  bsize = ABS (SIZ (b));
-  ap = PTR (a);
-  bp = PTR (b);
-  if (asize > bsize || (asize == bsize && mpn_cmp (ap, bp, asize) > 0))
-    {
-      usize = asize;
-      vsize = bsize;
-      up = (mp_ptr) TMP_ALLOC ((usize + 1) * BYTES_PER_MP_LIMB);
-      vp = (mp_ptr) TMP_ALLOC ((vsize + 1) * BYTES_PER_MP_LIMB);
-      MPN_COPY (up, ap, usize);
-      MPN_COPY (vp, bp, vsize);
-      u = a;
-      v = b;
-      ss = s;
-      tt = t;
-    }
-  else
-    {
-      usize = bsize;
-      vsize = asize;
-      up = (mp_ptr) TMP_ALLOC ((usize + 1) * BYTES_PER_MP_LIMB);
-      vp = (mp_ptr) TMP_ALLOC ((vsize + 1) * BYTES_PER_MP_LIMB);
-      MPN_COPY (up, bp, usize);
-      MPN_COPY (vp, ap, vsize);
-      u = b;
-      v = a;
-      ss = t;
-      tt = s;
-    }
-
-  tmp_gp = (mp_ptr) TMP_ALLOC ((usize + 1) * BYTES_PER_MP_LIMB);
-  tmp_sp = (mp_ptr) TMP_ALLOC ((usize + 1) * BYTES_PER_MP_LIMB);
-
-  if (vsize == 0)
-    {
-      tmp_sp[0] = 1;
-      tmp_ssize = 1;
-      MPN_COPY (tmp_gp, up, usize);
-      gsize = usize;
-    }
-  else
-    gsize = mpn_gcdext (tmp_gp, tmp_sp, &tmp_ssize, up, usize, vp, vsize);
-  ssize = ABS (tmp_ssize);
-
-  PTR (&gtmp) = tmp_gp;
-  SIZ (&gtmp) = gsize;
-
-  PTR (&stmp) = tmp_sp;
-  SIZ (&stmp) = (tmp_ssize ^ SIZ (u)) >= 0 ? ssize : -ssize;
-
-  if (tt != NULL)
-    {
-      if (SIZ (v) == 0)
-	SIZ (tt) = 0;
-      else
-	{
-	  mpz_t x;
-	  MPZ_TMP_INIT (x, ssize + usize + 1);
-	  mpz_mul (x, &stmp, u);
-	  mpz_sub (x, &gtmp, x);
-	  mpz_tdiv_q (tt, x, v);
-	}
-    }
-
-  if (ss != NULL)
-    {
-      if (ALLOC (ss) < ssize)
-	_mpz_realloc (ss, ssize);
-      sp = PTR (ss);
-      MPN_COPY (sp, tmp_sp, ssize);
-      SIZ (ss) = SIZ (&stmp);
-    }
-
-  if (ALLOC (g) < gsize)
-    _mpz_realloc (g, gsize);
-  gp = PTR (g);
-  MPN_COPY (gp, tmp_gp, gsize);
-  SIZ (g) = gsize;
-
-  TMP_FREE (marker);
-}