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diff --git a/gmp/mpn/m4-ccas b/gmp/mpn/m4-ccas
new file mode 100755
index 00000000..984e8e9b
--- /dev/null
+++ b/gmp/mpn/m4-ccas
@@ -0,0 +1,96 @@
+#!/bin/sh
+#
+# A helper script for Makeasm.am .asm.lo rule.
+
+# Copyright 2001 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 3 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.  If not, see http://www.gnu.org/licenses/.
+
+
+# Usage: m4-ccas --m4=M4 CC ... file.asm ...
+#
+# Process file.asm with the given M4 plus any -D arguments, then
+# assemble with the given CC plus all arguments.
+#
+# The M4 command must be in a single --m4= argument, and will be split
+# on whitespace.  When CC is invoked file.asm is replaced with a
+# temporary .s file which is the M4 output.
+#
+# To allow parallel builds, the temp file name is based on the .asm
+# file name, which will be the output object filename for all uses we
+# put this script to.
+
+M4=
+CC=
+DEFS=
+ASM=
+SEEN_O=no
+
+for i in "$@"; do
+  case $i in
+    --m4=*)
+      M4=`echo "$i" | sed 's/^--m4=//'`
+      ;;
+    -D*)
+      DEFS="$DEFS $i"
+      CC="$CC $i"
+      ;;
+    *.asm)
+      if test -n "$ASM"; then
+        echo "Only one .asm file permitted"
+        exit 1
+      fi
+      BASENAME=`echo "$i" | sed -e 's/\.asm$//' -e 's/^.*[\\/:]//'`
+      TMP=tmp-$BASENAME.s
+      ASM=$i
+      CC="$CC $TMP"
+      ;;
+    -o)
+      SEEN_O=yes
+      CC="$CC $i"
+      ;;
+    *)
+      CC="$CC $i"
+      ;;
+  esac
+done
+
+if test -z "$M4"; then
+  echo "No --m4 specified"
+  exit 1
+fi
+
+if test -z "$ASM"; then
+  echo "No .asm specified"
+  exit 1
+fi
+
+# Libtool adds it's own -o when sending output to .libs/foo.o, but not
+# when just wanting foo.o in the current directory.  We need an
+# explicit -o in both cases since we're assembling tmp-foo.s.
+#
+if test $SEEN_O = no; then
+  CC="$CC -o $BASENAME.o"
+fi
+
+echo "$M4 $DEFS $ASM >$TMP"
+$M4 $DEFS $ASM >$TMP || exit
+
+echo "$CC"
+$CC || exit
+
+# Comment this out to preserve .s intermediates
+rm -f $TMP