diff --git a/gnu/toolchain2netbsd b/gnu/toolchain2netbsd
new file mode 100644
index 000000000000..51bdf9234601
--- /dev/null
+++ b/gnu/toolchain2netbsd
@@ -0,0 +1,124 @@
+#!/bin/sh
+#	$NetBSD: toolchain2netbsd,v 1.1 2001/06/18 16:07:07 tv Exp $
+#
+# Shell script for generating all the constants needed for a native
+# platform build of src/gnu/dist/toolchain.
+#
+
+TMPDIR=${TMPDIR:-/tmp}
+MAKE=${MAKE:-make}
+
+# usage: getvars MAKEFILE VARNAME [VARNAME...]
+getvars () {
+	_mf="$1"; shift
+	$MAKE -f - _x_ <<EOF || { echo >&2 "ABORT: getvars $_mf $* failed"; exit 1; }
+_x_:
+.for var in $*
+	@echo G_\${var}=\${\${var}:Q} | sed 's,$_VPATH,\$\${DIST},g'
+.endfor
+.include "$_TMPDIR/$_mf"
+EOF
+}
+
+# usage: write_c FILENAME
+write_c () {
+	echo '/* This file is automatically generated.  DO NOT EDIT! */' >$1.tmp || \
+		{ echo >&2 "ABORT: cannot create $1"; exit 1; }
+	grep '$''NetBSD' toolchain2netbsd | sed 's,[#$],,g;s,.*,/* Generated from: & */,' >>$1.tmp
+	echo '' >>$1.tmp
+	writefile $1
+}
+
+# usage: write_mk FILENAME
+write_mk () {
+	echo '# This file is automatically generated.  DO NOT EDIT!' >$1.tmp || \
+		{ echo >&2 "ABORT: cannot create $1"; exit 1; }
+	grep '$''NetBSD' toolchain2netbsd | sed 's,[#$],,g;s,.*,# Generated from: &,' >>$1.tmp
+	echo '#' >>$1.tmp
+	writefile $1
+}
+
+writefile () {
+	cat >>$1.tmp
+	# will not overwrite a file that has the same content
+	if cmp $1.tmp $1 >/dev/null 2>&1; then
+		echo >&2 "$1 is unchanged"
+		rm -f $1.tmp
+	else
+		mv -f $1.tmp $1
+	fi
+}
+
+##### run GNU configure script #####
+
+_TMPDIR=${TMPDIR:-/tmp}/gnu.dist.toolchain.tmp
+MACHINE_ARCH=`sysctl -n hw.machine_arch`
+
+if [ ! -d $_TMPDIR ]; then
+	mkdir -p $_TMPDIR
+	cwd=`pwd`
+	(cd $_TMPDIR && LDFLAGS=-lintl LANGUAGES="c c++ objc f77" \
+		$cwd/dist/toolchain/configure --disable-shared)
+fi
+
+_VPATH=`grep VPATH ${_TMPDIR}/Makefile | sed 's,^.*= ,,'`
+
+##### gnu/lib/libbfd #####
+
+mkdir -p lib/libbfd/arch/$MACHINE_ARCH
+
+{
+	getvars bfd/Makefile \
+		libbfd_la_DEPENDENCIES libbfd_la_OBJECTS DEFS INCLUDES TDEFAULTS
+	getvars opcodes/Makefile \
+		archdefs BFD_MACHINES | sed 's,=,+=,g'
+} | write_mk lib/libbfd/arch/$MACHINE_ARCH/defs.mk
+
+(cd $_TMPDIR/bfd && $MAKE bfd.h)
+
+write_c lib/libbfd/arch/$MACHINE_ARCH/bfd.h <$_TMPDIR/bfd/bfd.h
+
+{
+	cat $_TMPDIR/bfd/config.h
+	grep -v PACKAGE $_TMPDIR/opcodes/config.h
+} | write_c lib/libbfd/arch/$MACHINE_ARCH/config.h
+
+##### gnu/lib/libgcc #####
+
+# DPBIT, FPBIT only used on mn10[23]00, we don't need them.
+getvars gcc/Makefile \
+	CXX_EXTRA_HEADERS CXX_LIB2FUNCS CXX_LIB2SRCS \
+	INCLUDES LIB2ADD LIB2FUNCS LIB2FUNCS_EH \
+	LIBGCC2_CFLAGS MAYBE_USE_COLLECT2 \
+	| write_mk lib/libgcc/$MACHINE_ARCH.mk
+
+##### gnu/lib/libiberty #####
+
+mkdir -p lib/libiberty/arch/$MACHINE_ARCH
+
+getvars libiberty/Makefile \
+	ALLOCA EXTRA_OFILES LIBOBJS REQUIRED_OFILES \
+	| write_mk lib/libiberty/arch/$MACHINE_ARCH/defs.mk
+
+write_c lib/libiberty/arch/$MACHINE_ARCH/config.h <$_TMPDIR/libiberty/config.h
+
+##### gnu/usr.bin/gcc #####
+
+mkdir -p usr.bin/gcc/arch/$MACHINE_ARCH
+
+{
+	getvars gcc/Makefile \
+		ALL_CFLAGS ALL_CPPFLAGS C_AND_OBJC_OBJS C_OBJS DRIVER_DEFINES \
+		HOST_LIBS HOST_PRINT HOST_RTL HOST_RTLANAL INCLUDES \
+		md_file OBJC_OBJS OBJS out_file version
+	getvars gcc/cp/Makefile \
+		CXX_OBJS
+	getvars gcc/f/Makefile \
+		F77_OBJS
+} | write_mk usr.bin/gcc/arch/$MACHINE_ARCH/defs.mk
+
+for f in auto-host config gencheck hconfig options specs tconfig tm; do
+	write_c usr.bin/gcc/arch/$MACHINE_ARCH/$f.h <$_TMPDIR/gcc/$f.h
+done
+
+#	-rm -rf ${_TMPDIR}