diff --git a/build-aux/ar-lib b/build-aux/ar-lib
index c349042..0baa4f6 100755
--- a/build-aux/ar-lib
+++ b/build-aux/ar-lib
@@ -2,9 +2,9 @@
 # Wrapper for Microsoft lib.exe
 
 me=ar-lib
-scriptversion=2019-07-04.01; # UTC
+scriptversion=2012-03-01.08; # UTC
 
-# Copyright (C) 2010-2021 Free Software Foundation, Inc.
+# Copyright (C) 2010-2018 Free Software Foundation, Inc.
 # Written by Peter Rosin <peda@lysator.liu.se>.
 #
 # This program is free software; you can redistribute it and/or modify
@@ -53,7 +53,7 @@ func_file_conv ()
 	  MINGW*)
 	    file_conv=mingw
 	    ;;
-	  CYGWIN* | MSYS*)
+	  CYGWIN*)
 	    file_conv=cygwin
 	    ;;
 	  *)
@@ -65,7 +65,7 @@ func_file_conv ()
 	mingw)
 	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
 	  ;;
-	cygwin | msys)
+	cygwin)
 	  file=`cygpath -m "$file" || echo "$file"`
 	  ;;
 	wine)
@@ -224,11 +224,10 @@ elif test -n "$extract"; then
       esac
     done
   else
-    $AR -NOLOGO -LIST "$archive" | tr -d '\r' | sed -e 's/\\/\\\\/g' \
-      | while read member
-        do
-          $AR -NOLOGO -EXTRACT:"$member" "$archive" || exit $?
-        done
+    $AR -NOLOGO -LIST "$archive" | sed -e 's/\\/\\\\/g' | while read member
+    do
+      $AR -NOLOGO -EXTRACT:"$member" "$archive" || exit $?
+    done
   fi
 
 elif test -n "$quick$replace"; then
diff --git a/build-aux/ci/build-linux-clang.sh b/build-aux/ci/build-linux-clang.sh
deleted file mode 100755
index c43f984..0000000
--- a/build-aux/ci/build-linux-clang.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/usr/bin/env bash
-set -eux
-
-BUILDROOT="$(git rev-parse --show-toplevel)"
-SCAN=(scan-build${CC#clang} --use-cc="${CC}")
-
-pushd "$BUILDROOT" &>/dev/null
-  ./autogen.sh
-  mkdir build && pushd build &>/dev/null
-    ${SCAN[@]} ../configure --disable-silent-rules --disable-man
-  popd &>/dev/null
-  ${SCAN[@]} --keep-cc --status-bugs make -C build -j $(nproc) check
-popd &>/dev/null
diff --git a/build-aux/ci/build-linux-gcc.sh b/build-aux/ci/build-linux-gcc.sh
deleted file mode 100755
index ac6a32a..0000000
--- a/build-aux/ci/build-linux-gcc.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/usr/bin/env bash
-set -ex
-
-BUILDROOT="$(git rev-parse --show-toplevel)"
-
-pushd "$BUILDROOT" &>/dev/null
-  ./autogen.sh
-  ./configure --disable-silent-rules --disable-man
-  make -j $(nproc) check
-popd &>/dev/null
diff --git a/build-aux/ci/build-osx.sh b/build-aux/ci/build-osx.sh
deleted file mode 100755
index 3d1d824..0000000
--- a/build-aux/ci/build-osx.sh
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/env bash
-set -ex
-
-BUILDROOT="$(git rev-parse --show-toplevel)"
-
-pushd "/tmp" &>/dev/null
-  # Build and install libcbor
-  git clone https://github.com/pjk/libcbor
-  pushd "/tmp/libcbor" &>/dev/null
-    git checkout v0.5.0
-    cmake -Bbuild -H.
-    cmake --build build -- --jobs=2 VERBOSE=1
-    sudo make -j $(sysctl -n hw.logicalcpu) -C build install
-  popd &>/dev/null
-
-  # Build and install libfido2
-  export PKG_CONFIG_PATH=/usr/local/opt/openssl@1.1/lib/pkgconfig
-  git clone https://github.com/Yubico/libfido2
-  pushd "/tmp/libfido2" &>/dev/null
-    cmake -Bbuild -H.
-    cmake --build build -- --jobs=2 VERBOSE=1
-    sudo make -j $(sysctl -n hw.logicalcpu) -C build install
-  popd &>/dev/null
-popd &>/dev/null
-
-pushd "$BUILDROOT" &>/dev/null
-  ./autogen.sh
-  ./configure --disable-silent-rules --disable-man
-  make -j $(sysctl -n hw.logicalcpu)
-popd &>/dev/null
diff --git a/build-aux/ci/distcheck.sh b/build-aux/ci/distcheck.sh
deleted file mode 100755
index fce3d72..0000000
--- a/build-aux/ci/distcheck.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/usr/bin/env bash
-set -ex
-
-BUILDROOT="$(git rev-parse --show-toplevel)"
-
-pushd "$BUILDROOT" &>/dev/null
-  ./autogen.sh
-  ./configure --disable-silent-rules
-  make -j $(nproc) distcheck
-popd &>/dev/null
diff --git a/build-aux/ci/format-code.sh b/build-aux/ci/format-code.sh
deleted file mode 100755
index 87dee41..0000000
--- a/build-aux/ci/format-code.sh
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/bin/bash
-#
-# Inspired by https://github.com/antiagainst/SPIRV-Tools/commit/c4f1bf8ddf7764b7c11fed1ce18ceb1d36b2eaf6
-#
-# Script to determine if source code in a diff is properly formatted. On
-# GitHub, a commit range is provided which corresponds to the commit range of
-#   1) commits associated with a pull request, or
-#   2) commits on a branch which are not also part of main, or
-#   3) commits since last push to main.
-#
-# Exits with non 0 exit code if formatting is needed.
-#
-# This script assumes to be invoked at the project root directory.
-
-COMMIT_RANGE="${1}"
-
-if [ -z "${COMMIT_RANGE}" ]; then
-    >&2 echo "Empty commit range, missing parameter"
-    exit 1
-fi
-
->&2 echo "Commit range $COMMIT_RANGE"
-
-FILES_TO_CHECK="$(git diff --name-only "$COMMIT_RANGE" | grep -e '\.c$' -e '\.h$' || true)"
-CFV="${CLANG_FORMAT_VERSION:-10}"
-
-if [ -z "${FILES_TO_CHECK}" ]; then
-    >&2 echo "No source code to check for formatting"
-    exit 0
-fi
-
-FORMAT_DIFF=$(git diff -U0 ${COMMIT_RANGE} -- ${FILES_TO_CHECK} | clang-format-diff$CFV -p1)
-
-if [ -z "${FORMAT_DIFF}" ]; then
-    >&2 echo "All source code in the diff is properly formatted"
-    exit 0
-else
-    >&2 echo -e "Found formatting errors\n"
-    echo "${FORMAT_DIFF}"
-    >&2 echo -e "\nYou can save the diff above and apply it with 'git apply -p0 my_diff'"
-    exit 1
-fi
diff --git a/build-aux/ci/fuzz-linux-asan.sh b/build-aux/ci/fuzz-linux-asan.sh
deleted file mode 100755
index cac17d9..0000000
--- a/build-aux/ci/fuzz-linux-asan.sh
+++ /dev/null
@@ -1,72 +0,0 @@
-#!/usr/bin/env bash
-set -euxo pipefail
-
-CORPUS_URL="https://storage.googleapis.com/yubico-pam-u2f/corpus.tgz"
-
-LIBCBOR_URL="https://github.com/pjk/libcbor"
-LIBCBOR_TAG="v0.9.0"
-LIBCBOR_CFLAGS="-fsanitize=address,alignment,bounds"
-LIBFIDO2_URL="https://github.com/Yubico/libfido2"
-LIBFIDO2_TAG="1.11.0"
-LIBFIDO2_CFLAGS="-fsanitize=address,alignment,bounds"
-
-COMMON_CFLAGS="-g2 -fno-omit-frame-pointer"
-PAM_U2F_CFLAGS="-fsanitize=address,pointer-compare,pointer-subtract"
-PAM_U2F_CFLAGS="${PAM_U2F_CFLAGS},undefined,bounds"
-PAM_U2F_CFLAGS="${PAM_U2F_CFLAGS},leak"
-PAM_U2F_CFLAGS="${PAM_U2F_CFLAGS} -fno-sanitize-recover=all"
-
-${CC} --version
-WORKDIR="${WORKDIR:-$(pwd)}"
-FAKEROOT="${FAKEROOT:-$(mktemp -d)}"
-
-export LD_LIBRARY_PATH="${FAKEROOT}/lib"
-export PKG_CONFIG_PATH="${FAKEROOT}/lib/pkgconfig"
-export UBSAN_OPTIONS="halt_on_error=1:print_stacktrace=1"
-export ASAN_OPTIONS="detect_leaks=1:detect_invalid_pointer_pairs=2"
-
-pushd "${FAKEROOT}" &>/dev/null
-
-git clone --depth 1 "${LIBFIDO2_URL}" -b "${LIBFIDO2_TAG}"
-git clone --depth 1 "${LIBCBOR_URL}" -b "${LIBCBOR_TAG}"
-
-# libcbor (with libfido2 patch)
-patch -d libcbor -p0 -s <libfido2/fuzz/README
-pushd libcbor &>/dev/null
-mkdir build
-cmake -B build \
-	-DCMAKE_INSTALL_LIBDIR=lib -DCMAKE_INSTALL_PREFIX="${FAKEROOT}" \
-	-DCMAKE_C_FLAGS_DEBUG="${LIBCBOR_CFLAGS} ${COMMON_CFLAGS}" \
-	-DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=Debug -DSANITIZE=OFF \
-	-DWITH_EXAMPLES=OFF
-make VERBOSE=1 -j $(nproc) -C build all install
-popd &>/dev/null # libcbor
-
-# libfido2 (with fuzzing support)
-pushd libfido2 &>/dev/null
-mkdir build
-cmake -B build \
-	-DCMAKE_INSTALL_LIBDIR=lib -DCMAKE_INSTALL_PREFIX="${FAKEROOT}" \
-	-DCMAKE_C_FLAGS_DEBUG="${LIBFIDO2_CFLAGS} ${COMMON_CFLAGS}" \
-	-DCMAKE_BUILD_TYPE=Debug -DFUZZ=1 -DLIBFUZZER=0 -DBUILD_EXAMPLES=0 \
-	-DBUILD_TOOLS=0 -DBUILD_MANPAGES=0
-make VERBOSE=1 -j $(nproc) -C build all install
-popd &>/dev/null # libfido2
-
-# pam-u2f
-mkdir build
-pushd build &>/dev/null
-autoreconf -i "${WORKDIR}"
-"${WORKDIR}"/configure --enable-fuzzing --disable-silent-rules \
-	--disable-man CFLAGS="${PAM_U2F_CFLAGS} ${COMMON_CFLAGS}"
-make -j $(nproc)
-
-# fuzz
-curl --retry 4 -s -o corpus.tgz "${CORPUS_URL}"
-tar xzf corpus.tgz
-fuzz/fuzz_format_parsers corpus/format_parsers \
-	-reload=30 -print_pcs=1 -print_funcs=30 -timeout=10 -runs=1
-fuzz/fuzz_auth corpus/auth \
-	-reload=30 -print_pcs=1 -print_funcs=30 -timeout=10 -runs=1
-
-popd &>/dev/null # fakeroot
diff --git a/build-aux/compile b/build-aux/compile
index df363c8..99e5052 100755
--- a/build-aux/compile
+++ b/build-aux/compile
@@ -3,7 +3,7 @@
 
 scriptversion=2018-03-07.03; # UTC
 
-# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+# Copyright (C) 1999-2018 Free Software Foundation, Inc.
 # Written by Tom Tromey <tromey@cygnus.com>.
 #
 # This program is free software; you can redistribute it and/or modify
@@ -53,7 +53,7 @@ func_file_conv ()
 	  MINGW*)
 	    file_conv=mingw
 	    ;;
-	  CYGWIN* | MSYS*)
+	  CYGWIN*)
 	    file_conv=cygwin
 	    ;;
 	  *)
@@ -67,7 +67,7 @@ func_file_conv ()
 	mingw/*)
 	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
 	  ;;
-	cygwin/* | msys/*)
+	cygwin/*)
 	  file=`cygpath -m "$file" || echo "$file"`
 	  ;;
 	wine/*)
diff --git a/build-aux/config.guess b/build-aux/config.guess
index 7f76b62..f50dcdb 100755
--- a/build-aux/config.guess
+++ b/build-aux/config.guess
@@ -1,14 +1,12 @@
 #! /bin/sh
 # Attempt to guess a canonical system name.
-#   Copyright 1992-2022 Free Software Foundation, Inc.
+#   Copyright 1992-2018 Free Software Foundation, Inc.
 
-# shellcheck disable=SC2006,SC2268 # see below for rationale
-
-timestamp='2022-01-09'
+timestamp='2018-02-24'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
+# the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful, but
@@ -29,19 +27,11 @@ timestamp='2022-01-09'
 # Originally written by Per Bothner; maintained since 2000 by Ben Elliston.
 #
 # You can get the latest version of this script from:
-# https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
+# https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess
 #
 # Please send patches to <config-patches@gnu.org>.
 
 
-# The "shellcheck disable" line above the timestamp inhibits complaints
-# about features and limitations of the classic Bourne shell that were
-# superseded or lifted in POSIX.  However, this script identifies a wide
-# variety of pre-POSIX systems that do not have POSIX shells at all, and
-# even some reasonably current systems (Solaris 10 as case-in-point) still
-# have a pre-POSIX /bin/sh.
-
-
 me=`echo "$0" | sed -e 's,.*/,,'`
 
 usage="\
@@ -60,7 +50,7 @@ version="\
 GNU config.guess ($timestamp)
 
 Originally written by Per Bothner.
-Copyright 1992-2022 Free Software Foundation, Inc.
+Copyright 1992-2018 Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -94,8 +84,7 @@ if test $# != 0; then
   exit 1
 fi
 
-# Just in case it came from the environment.
-GUESS=
+trap 'exit 1' 1 2 15
 
 # CC_FOR_BUILD -- compiler used by this script. Note that the use of a
 # compiler to aid in system detection is discouraged as it requires
@@ -107,90 +96,73 @@ GUESS=
 
 # Portable tmp directory creation inspired by the Autoconf team.
 
-tmp=
-# shellcheck disable=SC2172
-trap 'test -z "$tmp" || rm -fr "$tmp"' 0 1 2 13 15
-
-set_cc_for_build() {
-    # prevent multiple calls if $tmp is already set
-    test "$tmp" && return 0
-    : "${TMPDIR=/tmp}"
-    # shellcheck disable=SC2039,SC3028
-    { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
-	{ test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir "$tmp" 2>/dev/null) ; } ||
-	{ tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir "$tmp" 2>/dev/null) && echo "Warning: creating insecure temp directory" >&2 ; } ||
-	{ echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; }
-    dummy=$tmp/dummy
-    case ${CC_FOR_BUILD-},${HOST_CC-},${CC-} in
-	,,)    echo "int x;" > "$dummy.c"
-	       for driver in cc gcc c89 c99 ; do
-		   if ($driver -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then
-		       CC_FOR_BUILD=$driver
-		       break
-		   fi
-	       done
-	       if test x"$CC_FOR_BUILD" = x ; then
-		   CC_FOR_BUILD=no_compiler_found
-	       fi
-	       ;;
-	,,*)   CC_FOR_BUILD=$CC ;;
-	,*,*)  CC_FOR_BUILD=$HOST_CC ;;
-    esac
-}
+set_cc_for_build='
+trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ;
+trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ;
+: ${TMPDIR=/tmp} ;
+ { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
+ { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } ||
+ { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+ { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ;
+dummy=$tmp/dummy ;
+tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ;
+case $CC_FOR_BUILD,$HOST_CC,$CC in
+ ,,)    echo "int x;" > "$dummy.c" ;
+	for c in cc gcc c89 c99 ; do
+	  if ($c -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then
+	     CC_FOR_BUILD="$c"; break ;
+	  fi ;
+	done ;
+	if test x"$CC_FOR_BUILD" = x ; then
+	  CC_FOR_BUILD=no_compiler_found ;
+	fi
+	;;
+ ,,*)   CC_FOR_BUILD=$CC ;;
+ ,*,*)  CC_FOR_BUILD=$HOST_CC ;;
+esac ; set_cc_for_build= ;'
 
 # This is needed to find uname on a Pyramid OSx when run in the BSD universe.
 # (ghazi@noc.rutgers.edu 1994-08-24)
-if test -f /.attbin/uname ; then
+if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
 	PATH=$PATH:/.attbin ; export PATH
 fi
 
 UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
 UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
-UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown
+UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
 UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
 
-case $UNAME_SYSTEM in
+case "$UNAME_SYSTEM" in
 Linux|GNU|GNU/*)
-	LIBC=unknown
+	# If the system lacks a compiler, then just pick glibc.
+	# We could probably try harder.
+	LIBC=gnu
 
-	set_cc_for_build
+	eval "$set_cc_for_build"
 	cat <<-EOF > "$dummy.c"
 	#include <features.h>
 	#if defined(__UCLIBC__)
 	LIBC=uclibc
 	#elif defined(__dietlibc__)
 	LIBC=dietlibc
-	#elif defined(__GLIBC__)
-	LIBC=gnu
 	#else
-	#include <stdarg.h>
-	/* First heuristic to detect musl libc.  */
-	#ifdef __DEFINED_va_list
-	LIBC=musl
-	#endif
+	LIBC=gnu
 	#endif
 	EOF
-	cc_set_libc=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`
-	eval "$cc_set_libc"
+	eval "`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`"
 
-	# Second heuristic to detect musl libc.
-	if [ "$LIBC" = unknown ] &&
-	   command -v ldd >/dev/null &&
-	   ldd --version 2>&1 | grep -q ^musl; then
-		LIBC=musl
-	fi
-
-	# If the system lacks a compiler, then just pick glibc.
-	# We could probably try harder.
-	if [ "$LIBC" = unknown ]; then
-		LIBC=gnu
+	# If ldd exists, use it to detect musl libc.
+	if command -v ldd >/dev/null && \
+		ldd --version 2>&1 | grep -q ^musl
+	then
+	    LIBC=musl
 	fi
 	;;
 esac
 
 # Note: order is significant - the case branches are not exclusive.
 
-case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
+case "$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
     *:NetBSD:*:*)
 	# NetBSD (nbsd) targets should (where applicable) match one or
 	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
@@ -202,12 +174,12 @@ case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
 	#
 	# Note: NetBSD doesn't particularly care about the vendor
 	# portion of the name.  We always set it to "unknown".
+	sysctl="sysctl -n hw.machine_arch"
 	UNAME_MACHINE_ARCH=`(uname -p 2>/dev/null || \
-	    /sbin/sysctl -n hw.machine_arch 2>/dev/null || \
-	    /usr/sbin/sysctl -n hw.machine_arch 2>/dev/null || \
+	    "/sbin/$sysctl" 2>/dev/null || \
+	    "/usr/sbin/$sysctl" 2>/dev/null || \
 	    echo unknown)`
-	case $UNAME_MACHINE_ARCH in
-	    aarch64eb) machine=aarch64_be-unknown ;;
+	case "$UNAME_MACHINE_ARCH" in
 	    armeb) machine=armeb-unknown ;;
 	    arm*) machine=arm-unknown ;;
 	    sh3el) machine=shl-unknown ;;
@@ -216,18 +188,18 @@ case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
 	    earmv*)
 		arch=`echo "$UNAME_MACHINE_ARCH" | sed -e 's,^e\(armv[0-9]\).*$,\1,'`
 		endian=`echo "$UNAME_MACHINE_ARCH" | sed -ne 's,^.*\(eb\)$,\1,p'`
-		machine=${arch}${endian}-unknown
+		machine="${arch}${endian}"-unknown
 		;;
-	    *) machine=$UNAME_MACHINE_ARCH-unknown ;;
+	    *) machine="$UNAME_MACHINE_ARCH"-unknown ;;
 	esac
 	# The Operating System including object format, if it has switched
 	# to ELF recently (or will in the future) and ABI.
-	case $UNAME_MACHINE_ARCH in
+	case "$UNAME_MACHINE_ARCH" in
 	    earm*)
 		os=netbsdelf
 		;;
 	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
-		set_cc_for_build
+		eval "$set_cc_for_build"
 		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
 			| grep -q __ELF__
 		then
@@ -243,7 +215,7 @@ case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
 		;;
 	esac
 	# Determine ABI tags.
-	case $UNAME_MACHINE_ARCH in
+	case "$UNAME_MACHINE_ARCH" in
 	    earm*)
 		expr='s/^earmv[0-9]/-eabi/;s/eb$//'
 		abi=`echo "$UNAME_MACHINE_ARCH" | sed -e "$expr"`
@@ -254,7 +226,7 @@ case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
 	# thus, need a distinct triplet. However, they do not need
 	# kernel version information, so it can be replaced with a
 	# suitable tag, in the style of linux-gnu.
-	case $UNAME_VERSION in
+	case "$UNAME_VERSION" in
 	    Debian*)
 		release='-gnu'
 		;;
@@ -265,57 +237,45 @@ case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
 	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
 	# contains redundant information, the shorter form:
 	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
-	GUESS=$machine-${os}${release}${abi-}
-	;;
+	echo "$machine-${os}${release}${abi}"
+	exit ;;
     *:Bitrig:*:*)
 	UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
-	GUESS=$UNAME_MACHINE_ARCH-unknown-bitrig$UNAME_RELEASE
-	;;
+	echo "$UNAME_MACHINE_ARCH"-unknown-bitrig"$UNAME_RELEASE"
+	exit ;;
     *:OpenBSD:*:*)
 	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
-	GUESS=$UNAME_MACHINE_ARCH-unknown-openbsd$UNAME_RELEASE
-	;;
-    *:SecBSD:*:*)
-	UNAME_MACHINE_ARCH=`arch | sed 's/SecBSD.//'`
-	GUESS=$UNAME_MACHINE_ARCH-unknown-secbsd$UNAME_RELEASE
-	;;
+	echo "$UNAME_MACHINE_ARCH"-unknown-openbsd"$UNAME_RELEASE"
+	exit ;;
     *:LibertyBSD:*:*)
 	UNAME_MACHINE_ARCH=`arch | sed 's/^.*BSD\.//'`
-	GUESS=$UNAME_MACHINE_ARCH-unknown-libertybsd$UNAME_RELEASE
-	;;
+	echo "$UNAME_MACHINE_ARCH"-unknown-libertybsd"$UNAME_RELEASE"
+	exit ;;
     *:MidnightBSD:*:*)
-	GUESS=$UNAME_MACHINE-unknown-midnightbsd$UNAME_RELEASE
-	;;
+	echo "$UNAME_MACHINE"-unknown-midnightbsd"$UNAME_RELEASE"
+	exit ;;
     *:ekkoBSD:*:*)
-	GUESS=$UNAME_MACHINE-unknown-ekkobsd$UNAME_RELEASE
-	;;
+	echo "$UNAME_MACHINE"-unknown-ekkobsd"$UNAME_RELEASE"
+	exit ;;
     *:SolidBSD:*:*)
-	GUESS=$UNAME_MACHINE-unknown-solidbsd$UNAME_RELEASE
-	;;
-    *:OS108:*:*)
-	GUESS=$UNAME_MACHINE-unknown-os108_$UNAME_RELEASE
-	;;
+	echo "$UNAME_MACHINE"-unknown-solidbsd"$UNAME_RELEASE"
+	exit ;;
     macppc:MirBSD:*:*)
-	GUESS=powerpc-unknown-mirbsd$UNAME_RELEASE
-	;;
+	echo powerpc-unknown-mirbsd"$UNAME_RELEASE"
+	exit ;;
     *:MirBSD:*:*)
-	GUESS=$UNAME_MACHINE-unknown-mirbsd$UNAME_RELEASE
-	;;
+	echo "$UNAME_MACHINE"-unknown-mirbsd"$UNAME_RELEASE"
+	exit ;;
     *:Sortix:*:*)
-	GUESS=$UNAME_MACHINE-unknown-sortix
-	;;
-    *:Twizzler:*:*)
-	GUESS=$UNAME_MACHINE-unknown-twizzler
-	;;
+	echo "$UNAME_MACHINE"-unknown-sortix
+	exit ;;
     *:Redox:*:*)
-	GUESS=$UNAME_MACHINE-unknown-redox
-	;;
+	echo "$UNAME_MACHINE"-unknown-redox
+	exit ;;
     mips:OSF1:*.*)
-	GUESS=mips-dec-osf1
-	;;
+        echo mips-dec-osf1
+        exit ;;
     alpha:OSF1:*:*)
-	# Reset EXIT trap before exiting to avoid spurious non-zero exit code.
-	trap '' 0
 	case $UNAME_RELEASE in
 	*4.0)
 		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
@@ -329,7 +289,7 @@ case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
 	# covers most systems running today.  This code pipes the CPU
 	# types through head -n 1, so we only detect the type of CPU 0.
 	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
-	case $ALPHA_CPU_TYPE in
+	case "$ALPHA_CPU_TYPE" in
 	    "EV4 (21064)")
 		UNAME_MACHINE=alpha ;;
 	    "EV4.5 (21064)")
@@ -366,121 +326,117 @@ case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
 	# A Tn.n version is a released field test version.
 	# A Xn.n version is an unreleased experimental baselevel.
 	# 1.2 uses "1.2" for uname -r.
-	OSF_REL=`echo "$UNAME_RELEASE" | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
-	GUESS=$UNAME_MACHINE-dec-osf$OSF_REL
-	;;
+	echo "$UNAME_MACHINE"-dec-osf"`echo "$UNAME_RELEASE" | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`"
+	# Reset EXIT trap before exiting to avoid spurious non-zero exit code.
+	exitcode=$?
+	trap '' 0
+	exit $exitcode ;;
     Amiga*:UNIX_System_V:4.0:*)
-	GUESS=m68k-unknown-sysv4
-	;;
+	echo m68k-unknown-sysv4
+	exit ;;
     *:[Aa]miga[Oo][Ss]:*:*)
-	GUESS=$UNAME_MACHINE-unknown-amigaos
-	;;
+	echo "$UNAME_MACHINE"-unknown-amigaos
+	exit ;;
     *:[Mm]orph[Oo][Ss]:*:*)
-	GUESS=$UNAME_MACHINE-unknown-morphos
-	;;
+	echo "$UNAME_MACHINE"-unknown-morphos
+	exit ;;
     *:OS/390:*:*)
-	GUESS=i370-ibm-openedition
-	;;
+	echo i370-ibm-openedition
+	exit ;;
     *:z/VM:*:*)
-	GUESS=s390-ibm-zvmoe
-	;;
+	echo s390-ibm-zvmoe
+	exit ;;
     *:OS400:*:*)
-	GUESS=powerpc-ibm-os400
-	;;
+	echo powerpc-ibm-os400
+	exit ;;
     arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
-	GUESS=arm-acorn-riscix$UNAME_RELEASE
-	;;
+	echo arm-acorn-riscix"$UNAME_RELEASE"
+	exit ;;
     arm*:riscos:*:*|arm*:RISCOS:*:*)
-	GUESS=arm-unknown-riscos
-	;;
+	echo arm-unknown-riscos
+	exit ;;
     SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
-	GUESS=hppa1.1-hitachi-hiuxmpp
-	;;
+	echo hppa1.1-hitachi-hiuxmpp
+	exit ;;
     Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
 	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
-	case `(/bin/universe) 2>/dev/null` in
-	    att) GUESS=pyramid-pyramid-sysv3 ;;
-	    *)   GUESS=pyramid-pyramid-bsd   ;;
-	esac
-	;;
+	if test "`(/bin/universe) 2>/dev/null`" = att ; then
+		echo pyramid-pyramid-sysv3
+	else
+		echo pyramid-pyramid-bsd
+	fi
+	exit ;;
     NILE*:*:*:dcosx)
-	GUESS=pyramid-pyramid-svr4
-	;;
+	echo pyramid-pyramid-svr4
+	exit ;;
     DRS?6000:unix:4.0:6*)
-	GUESS=sparc-icl-nx6
-	;;
+	echo sparc-icl-nx6
+	exit ;;
     DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
 	case `/usr/bin/uname -p` in
-	    sparc) GUESS=sparc-icl-nx7 ;;
-	esac
-	;;
+	    sparc) echo sparc-icl-nx7; exit ;;
+	esac ;;
     s390x:SunOS:*:*)
-	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
-	GUESS=$UNAME_MACHINE-ibm-solaris2$SUN_REL
-	;;
+	echo "$UNAME_MACHINE"-ibm-solaris2"`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`"
+	exit ;;
     sun4H:SunOS:5.*:*)
-	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
-	GUESS=sparc-hal-solaris2$SUN_REL
-	;;
+	echo sparc-hal-solaris2"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`"
+	exit ;;
     sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
-	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
-	GUESS=sparc-sun-solaris2$SUN_REL
-	;;
+	echo sparc-sun-solaris2"`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`"
+	exit ;;
     i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
-	GUESS=i386-pc-auroraux$UNAME_RELEASE
-	;;
+	echo i386-pc-auroraux"$UNAME_RELEASE"
+	exit ;;
     i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
-	set_cc_for_build
+	eval "$set_cc_for_build"
 	SUN_ARCH=i386
 	# If there is a compiler, see if it is configured for 64-bit objects.
 	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
 	# This test works for both compilers.
-	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	if [ "$CC_FOR_BUILD" != no_compiler_found ]; then
 	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
-		(CCOPTS="" $CC_FOR_BUILD -m64 -E - 2>/dev/null) | \
+		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
 		grep IS_64BIT_ARCH >/dev/null
 	    then
 		SUN_ARCH=x86_64
 	    fi
 	fi
-	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
-	GUESS=$SUN_ARCH-pc-solaris2$SUN_REL
-	;;
+	echo "$SUN_ARCH"-pc-solaris2"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`"
+	exit ;;
     sun4*:SunOS:6*:*)
 	# According to config.sub, this is the proper way to canonicalize
 	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
 	# it's likely to be more like Solaris than SunOS4.
-	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
-	GUESS=sparc-sun-solaris3$SUN_REL
-	;;
+	echo sparc-sun-solaris3"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`"
+	exit ;;
     sun4*:SunOS:*:*)
-	case `/usr/bin/arch -k` in
+	case "`/usr/bin/arch -k`" in
 	    Series*|S4*)
 		UNAME_RELEASE=`uname -v`
 		;;
 	esac
 	# Japanese Language versions have a version number like `4.1.3-JL'.
-	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/-/_/'`
-	GUESS=sparc-sun-sunos$SUN_REL
-	;;
+	echo sparc-sun-sunos"`echo "$UNAME_RELEASE"|sed -e 's/-/_/'`"
+	exit ;;
     sun3*:SunOS:*:*)
-	GUESS=m68k-sun-sunos$UNAME_RELEASE
-	;;
+	echo m68k-sun-sunos"$UNAME_RELEASE"
+	exit ;;
     sun*:*:4.2BSD:*)
 	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
 	test "x$UNAME_RELEASE" = x && UNAME_RELEASE=3
-	case `/bin/arch` in
+	case "`/bin/arch`" in
 	    sun3)
-		GUESS=m68k-sun-sunos$UNAME_RELEASE
+		echo m68k-sun-sunos"$UNAME_RELEASE"
 		;;
 	    sun4)
-		GUESS=sparc-sun-sunos$UNAME_RELEASE
+		echo sparc-sun-sunos"$UNAME_RELEASE"
 		;;
 	esac
-	;;
+	exit ;;
     aushp:SunOS:*:*)
-	GUESS=sparc-auspex-sunos$UNAME_RELEASE
-	;;
+	echo sparc-auspex-sunos"$UNAME_RELEASE"
+	exit ;;
     # The situation for MiNT is a little confusing.  The machine name
     # can be virtually everything (everything which is not
     # "atarist" or "atariste" at least should have a processor
@@ -490,43 +446,43 @@ case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
     # MiNT.  But MiNT is downward compatible to TOS, so this should
     # be no problem.
     atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
-	GUESS=m68k-atari-mint$UNAME_RELEASE
-	;;
+	echo m68k-atari-mint"$UNAME_RELEASE"
+	exit ;;
     atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
-	GUESS=m68k-atari-mint$UNAME_RELEASE
-	;;
+	echo m68k-atari-mint"$UNAME_RELEASE"
+	exit ;;
     *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
-	GUESS=m68k-atari-mint$UNAME_RELEASE
-	;;
+	echo m68k-atari-mint"$UNAME_RELEASE"
+	exit ;;
     milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
-	GUESS=m68k-milan-mint$UNAME_RELEASE
-	;;
+	echo m68k-milan-mint"$UNAME_RELEASE"
+	exit ;;
     hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
-	GUESS=m68k-hades-mint$UNAME_RELEASE
-	;;
+	echo m68k-hades-mint"$UNAME_RELEASE"
+	exit ;;
     *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
-	GUESS=m68k-unknown-mint$UNAME_RELEASE
-	;;
+	echo m68k-unknown-mint"$UNAME_RELEASE"
+	exit ;;
     m68k:machten:*:*)
-	GUESS=m68k-apple-machten$UNAME_RELEASE
-	;;
+	echo m68k-apple-machten"$UNAME_RELEASE"
+	exit ;;
     powerpc:machten:*:*)
-	GUESS=powerpc-apple-machten$UNAME_RELEASE
-	;;
+	echo powerpc-apple-machten"$UNAME_RELEASE"
+	exit ;;
     RISC*:Mach:*:*)
-	GUESS=mips-dec-mach_bsd4.3
-	;;
+	echo mips-dec-mach_bsd4.3
+	exit ;;
     RISC*:ULTRIX:*:*)
-	GUESS=mips-dec-ultrix$UNAME_RELEASE
-	;;
+	echo mips-dec-ultrix"$UNAME_RELEASE"
+	exit ;;
     VAX*:ULTRIX*:*:*)
-	GUESS=vax-dec-ultrix$UNAME_RELEASE
-	;;
+	echo vax-dec-ultrix"$UNAME_RELEASE"
+	exit ;;
     2020:CLIX:*:* | 2430:CLIX:*:*)
-	GUESS=clipper-intergraph-clix$UNAME_RELEASE
-	;;
+	echo clipper-intergraph-clix"$UNAME_RELEASE"
+	exit ;;
     mips:*:*:UMIPS | mips:*:*:RISCos)
-	set_cc_for_build
+	eval "$set_cc_for_build"
 	sed 's/^	//' << EOF > "$dummy.c"
 #ifdef __cplusplus
 #include <stdio.h>  /* for printf() prototype */
@@ -552,79 +508,78 @@ EOF
 	  dummyarg=`echo "$UNAME_RELEASE" | sed -n 's/\([0-9]*\).*/\1/p'` &&
 	  SYSTEM_NAME=`"$dummy" "$dummyarg"` &&
 	    { echo "$SYSTEM_NAME"; exit; }
-	GUESS=mips-mips-riscos$UNAME_RELEASE
-	;;
+	echo mips-mips-riscos"$UNAME_RELEASE"
+	exit ;;
     Motorola:PowerMAX_OS:*:*)
-	GUESS=powerpc-motorola-powermax
-	;;
+	echo powerpc-motorola-powermax
+	exit ;;
     Motorola:*:4.3:PL8-*)
-	GUESS=powerpc-harris-powermax
-	;;
+	echo powerpc-harris-powermax
+	exit ;;
     Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
-	GUESS=powerpc-harris-powermax
-	;;
+	echo powerpc-harris-powermax
+	exit ;;
     Night_Hawk:Power_UNIX:*:*)
-	GUESS=powerpc-harris-powerunix
-	;;
+	echo powerpc-harris-powerunix
+	exit ;;
     m88k:CX/UX:7*:*)
-	GUESS=m88k-harris-cxux7
-	;;
+	echo m88k-harris-cxux7
+	exit ;;
     m88k:*:4*:R4*)
-	GUESS=m88k-motorola-sysv4
-	;;
+	echo m88k-motorola-sysv4
+	exit ;;
     m88k:*:3*:R3*)
-	GUESS=m88k-motorola-sysv3
-	;;
+	echo m88k-motorola-sysv3
+	exit ;;
     AViiON:dgux:*:*)
 	# DG/UX returns AViiON for all architectures
 	UNAME_PROCESSOR=`/usr/bin/uname -p`
-	if test "$UNAME_PROCESSOR" = mc88100 || test "$UNAME_PROCESSOR" = mc88110
+	if [ "$UNAME_PROCESSOR" = mc88100 ] || [ "$UNAME_PROCESSOR" = mc88110 ]
 	then
-	    if test "$TARGET_BINARY_INTERFACE"x = m88kdguxelfx || \
-	       test "$TARGET_BINARY_INTERFACE"x = x
+	    if [ "$TARGET_BINARY_INTERFACE"x = m88kdguxelfx ] || \
+	       [ "$TARGET_BINARY_INTERFACE"x = x ]
 	    then
-		GUESS=m88k-dg-dgux$UNAME_RELEASE
+		echo m88k-dg-dgux"$UNAME_RELEASE"
 	    else
-		GUESS=m88k-dg-dguxbcs$UNAME_RELEASE
+		echo m88k-dg-dguxbcs"$UNAME_RELEASE"
 	    fi
 	else
-	    GUESS=i586-dg-dgux$UNAME_RELEASE
+	    echo i586-dg-dgux"$UNAME_RELEASE"
 	fi
-	;;
+	exit ;;
     M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
-	GUESS=m88k-dolphin-sysv3
-	;;
+	echo m88k-dolphin-sysv3
+	exit ;;
     M88*:*:R3*:*)
 	# Delta 88k system running SVR3
-	GUESS=m88k-motorola-sysv3
-	;;
+	echo m88k-motorola-sysv3
+	exit ;;
     XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
-	GUESS=m88k-tektronix-sysv3
-	;;
+	echo m88k-tektronix-sysv3
+	exit ;;
     Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
-	GUESS=m68k-tektronix-bsd
-	;;
+	echo m68k-tektronix-bsd
+	exit ;;
     *:IRIX*:*:*)
-	IRIX_REL=`echo "$UNAME_RELEASE" | sed -e 's/-/_/g'`
-	GUESS=mips-sgi-irix$IRIX_REL
-	;;
+	echo mips-sgi-irix"`echo "$UNAME_RELEASE"|sed -e 's/-/_/g'`"
+	exit ;;
     ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
-	GUESS=romp-ibm-aix    # uname -m gives an 8 hex-code CPU id
-	;;                    # Note that: echo "'`uname -s`'" gives 'AIX '
+	echo romp-ibm-aix     # uname -m gives an 8 hex-code CPU id
+	exit ;;               # Note that: echo "'`uname -s`'" gives 'AIX '
     i*86:AIX:*:*)
-	GUESS=i386-ibm-aix
-	;;
+	echo i386-ibm-aix
+	exit ;;
     ia64:AIX:*:*)
-	if test -x /usr/bin/oslevel ; then
+	if [ -x /usr/bin/oslevel ] ; then
 		IBM_REV=`/usr/bin/oslevel`
 	else
-		IBM_REV=$UNAME_VERSION.$UNAME_RELEASE
+		IBM_REV="$UNAME_VERSION.$UNAME_RELEASE"
 	fi
-	GUESS=$UNAME_MACHINE-ibm-aix$IBM_REV
-	;;
+	echo "$UNAME_MACHINE"-ibm-aix"$IBM_REV"
+	exit ;;
     *:AIX:2:3)
 	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
-		set_cc_for_build
+		eval "$set_cc_for_build"
 		sed 's/^		//' << EOF > "$dummy.c"
 		#include <sys/systemcfg.h>
 
@@ -638,16 +593,16 @@ EOF
 EOF
 		if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"`
 		then
-			GUESS=$SYSTEM_NAME
+			echo "$SYSTEM_NAME"
 		else
-			GUESS=rs6000-ibm-aix3.2.5
+			echo rs6000-ibm-aix3.2.5
 		fi
 	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
-		GUESS=rs6000-ibm-aix3.2.4
+		echo rs6000-ibm-aix3.2.4
 	else
-		GUESS=rs6000-ibm-aix3.2
+		echo rs6000-ibm-aix3.2
 	fi
-	;;
+	exit ;;
     *:AIX:*:[4567])
 	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
 	if /usr/sbin/lsattr -El "$IBM_CPU_ID" | grep ' POWER' >/dev/null 2>&1; then
@@ -655,57 +610,57 @@ EOF
 	else
 		IBM_ARCH=powerpc
 	fi
-	if test -x /usr/bin/lslpp ; then
-		IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc | \
+	if [ -x /usr/bin/lslpp ] ; then
+		IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc |
 			   awk -F: '{ print $3 }' | sed s/[0-9]*$/0/`
 	else
-		IBM_REV=$UNAME_VERSION.$UNAME_RELEASE
+		IBM_REV="$UNAME_VERSION.$UNAME_RELEASE"
 	fi
-	GUESS=$IBM_ARCH-ibm-aix$IBM_REV
-	;;
+	echo "$IBM_ARCH"-ibm-aix"$IBM_REV"
+	exit ;;
     *:AIX:*:*)
-	GUESS=rs6000-ibm-aix
-	;;
+	echo rs6000-ibm-aix
+	exit ;;
     ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*)
-	GUESS=romp-ibm-bsd4.4
-	;;
+	echo romp-ibm-bsd4.4
+	exit ;;
     ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
-	GUESS=romp-ibm-bsd$UNAME_RELEASE    # 4.3 with uname added to
-	;;                                  # report: romp-ibm BSD 4.3
+	echo romp-ibm-bsd"$UNAME_RELEASE"   # 4.3 with uname added to
+	exit ;;                             # report: romp-ibm BSD 4.3
     *:BOSX:*:*)
-	GUESS=rs6000-bull-bosx
-	;;
+	echo rs6000-bull-bosx
+	exit ;;
     DPX/2?00:B.O.S.:*:*)
-	GUESS=m68k-bull-sysv3
-	;;
+	echo m68k-bull-sysv3
+	exit ;;
     9000/[34]??:4.3bsd:1.*:*)
-	GUESS=m68k-hp-bsd
-	;;
+	echo m68k-hp-bsd
+	exit ;;
     hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
-	GUESS=m68k-hp-bsd4.4
-	;;
+	echo m68k-hp-bsd4.4
+	exit ;;
     9000/[34678]??:HP-UX:*:*)
-	HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'`
-	case $UNAME_MACHINE in
+	HPUX_REV=`echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//'`
+	case "$UNAME_MACHINE" in
 	    9000/31?)            HP_ARCH=m68000 ;;
 	    9000/[34]??)         HP_ARCH=m68k ;;
 	    9000/[678][0-9][0-9])
-		if test -x /usr/bin/getconf; then
+		if [ -x /usr/bin/getconf ]; then
 		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
 		    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
-		    case $sc_cpu_version in
+		    case "$sc_cpu_version" in
 		      523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0
 		      528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1
 		      532)                      # CPU_PA_RISC2_0
-			case $sc_kernel_bits in
+			case "$sc_kernel_bits" in
 			  32) HP_ARCH=hppa2.0n ;;
 			  64) HP_ARCH=hppa2.0w ;;
 			  '') HP_ARCH=hppa2.0 ;;   # HP-UX 10.20
 			esac ;;
 		    esac
 		fi
-		if test "$HP_ARCH" = ""; then
-		    set_cc_for_build
+		if [ "$HP_ARCH" = "" ]; then
+		    eval "$set_cc_for_build"
 		    sed 's/^		//' << EOF > "$dummy.c"
 
 		#define _HPUX_SOURCE
@@ -743,9 +698,9 @@ EOF
 		    test -z "$HP_ARCH" && HP_ARCH=hppa
 		fi ;;
 	esac
-	if test "$HP_ARCH" = hppa2.0w
+	if [ "$HP_ARCH" = hppa2.0w ]
 	then
-	    set_cc_for_build
+	    eval "$set_cc_for_build"
 
 	    # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
 	    # 32-bit code.  hppa64-hp-hpux* has the same kernel and a compiler
@@ -764,14 +719,14 @@ EOF
 		HP_ARCH=hppa64
 	    fi
 	fi
-	GUESS=$HP_ARCH-hp-hpux$HPUX_REV
-	;;
+	echo "$HP_ARCH"-hp-hpux"$HPUX_REV"
+	exit ;;
     ia64:HP-UX:*:*)
-	HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'`
-	GUESS=ia64-hp-hpux$HPUX_REV
-	;;
+	HPUX_REV=`echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//'`
+	echo ia64-hp-hpux"$HPUX_REV"
+	exit ;;
     3050*:HI-UX:*:*)
-	set_cc_for_build
+	eval "$set_cc_for_build"
 	sed 's/^	//' << EOF > "$dummy.c"
 	#include <unistd.h>
 	int
@@ -799,36 +754,36 @@ EOF
 EOF
 	$CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` &&
 		{ echo "$SYSTEM_NAME"; exit; }
-	GUESS=unknown-hitachi-hiuxwe2
-	;;
+	echo unknown-hitachi-hiuxwe2
+	exit ;;
     9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:*)
-	GUESS=hppa1.1-hp-bsd
-	;;
+	echo hppa1.1-hp-bsd
+	exit ;;
     9000/8??:4.3bsd:*:*)
-	GUESS=hppa1.0-hp-bsd
-	;;
+	echo hppa1.0-hp-bsd
+	exit ;;
     *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
-	GUESS=hppa1.0-hp-mpeix
-	;;
+	echo hppa1.0-hp-mpeix
+	exit ;;
     hp7??:OSF1:*:* | hp8?[79]:OSF1:*:*)
-	GUESS=hppa1.1-hp-osf
-	;;
+	echo hppa1.1-hp-osf
+	exit ;;
     hp8??:OSF1:*:*)
-	GUESS=hppa1.0-hp-osf
-	;;
+	echo hppa1.0-hp-osf
+	exit ;;
     i*86:OSF1:*:*)
-	if test -x /usr/sbin/sysversion ; then
-	    GUESS=$UNAME_MACHINE-unknown-osf1mk
+	if [ -x /usr/sbin/sysversion ] ; then
+	    echo "$UNAME_MACHINE"-unknown-osf1mk
 	else
-	    GUESS=$UNAME_MACHINE-unknown-osf1
+	    echo "$UNAME_MACHINE"-unknown-osf1
 	fi
-	;;
+	exit ;;
     parisc*:Lites*:*:*)
-	GUESS=hppa1.1-hp-lites
-	;;
+	echo hppa1.1-hp-lites
+	exit ;;
     C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
-	GUESS=c1-convex-bsd
-	;;
+	echo c1-convex-bsd
+	exit ;;
     C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
 	if getsysinfo -f scalar_acc
 	then echo c32-convex-bsd
@@ -836,18 +791,17 @@ EOF
 	fi
 	exit ;;
     C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
-	GUESS=c34-convex-bsd
-	;;
+	echo c34-convex-bsd
+	exit ;;
     C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
-	GUESS=c38-convex-bsd
-	;;
+	echo c38-convex-bsd
+	exit ;;
     C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
-	GUESS=c4-convex-bsd
-	;;
+	echo c4-convex-bsd
+	exit ;;
     CRAY*Y-MP:*:*:*)
-	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
-	GUESS=ymp-cray-unicos$CRAY_REL
-	;;
+	echo ymp-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
     CRAY*[A-Z]90:*:*:*)
 	echo "$UNAME_MACHINE"-cray-unicos"$UNAME_RELEASE" \
 	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
@@ -855,129 +809,103 @@ EOF
 	      -e 's/\.[^.]*$/.X/'
 	exit ;;
     CRAY*TS:*:*:*)
-	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
-	GUESS=t90-cray-unicos$CRAY_REL
-	;;
+	echo t90-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
     CRAY*T3E:*:*:*)
-	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
-	GUESS=alphaev5-cray-unicosmk$CRAY_REL
-	;;
+	echo alphaev5-cray-unicosmk"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
     CRAY*SV1:*:*:*)
-	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
-	GUESS=sv1-cray-unicos$CRAY_REL
-	;;
+	echo sv1-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
     *:UNICOS/mp:*:*)
-	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
-	GUESS=craynv-cray-unicosmp$CRAY_REL
-	;;
+	echo craynv-cray-unicosmp"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
     F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
 	FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
 	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
 	FUJITSU_REL=`echo "$UNAME_RELEASE" | sed -e 's/ /_/'`
-	GUESS=${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}
-	;;
+	echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
     5000:UNIX_System_V:4.*:*)
 	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
 	FUJITSU_REL=`echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'`
-	GUESS=sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}
-	;;
+	echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
     i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
-	GUESS=$UNAME_MACHINE-pc-bsdi$UNAME_RELEASE
-	;;
+	echo "$UNAME_MACHINE"-pc-bsdi"$UNAME_RELEASE"
+	exit ;;
     sparc*:BSD/OS:*:*)
-	GUESS=sparc-unknown-bsdi$UNAME_RELEASE
-	;;
+	echo sparc-unknown-bsdi"$UNAME_RELEASE"
+	exit ;;
     *:BSD/OS:*:*)
-	GUESS=$UNAME_MACHINE-unknown-bsdi$UNAME_RELEASE
-	;;
-    arm:FreeBSD:*:*)
-	UNAME_PROCESSOR=`uname -p`
-	set_cc_for_build
-	if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
-	    | grep -q __ARM_PCS_VFP
-	then
-	    FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
-	    GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabi
-	else
-	    FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
-	    GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabihf
-	fi
-	;;
+	echo "$UNAME_MACHINE"-unknown-bsdi"$UNAME_RELEASE"
+	exit ;;
     *:FreeBSD:*:*)
 	UNAME_PROCESSOR=`/usr/bin/uname -p`
-	case $UNAME_PROCESSOR in
+	case "$UNAME_PROCESSOR" in
 	    amd64)
 		UNAME_PROCESSOR=x86_64 ;;
 	    i386)
 		UNAME_PROCESSOR=i586 ;;
 	esac
-	FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
-	GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL
-	;;
+	echo "$UNAME_PROCESSOR"-unknown-freebsd"`echo "$UNAME_RELEASE"|sed -e 's/[-(].*//'`"
+	exit ;;
     i*:CYGWIN*:*)
-	GUESS=$UNAME_MACHINE-pc-cygwin
-	;;
+	echo "$UNAME_MACHINE"-pc-cygwin
+	exit ;;
     *:MINGW64*:*)
-	GUESS=$UNAME_MACHINE-pc-mingw64
-	;;
+	echo "$UNAME_MACHINE"-pc-mingw64
+	exit ;;
     *:MINGW*:*)
-	GUESS=$UNAME_MACHINE-pc-mingw32
-	;;
+	echo "$UNAME_MACHINE"-pc-mingw32
+	exit ;;
     *:MSYS*:*)
-	GUESS=$UNAME_MACHINE-pc-msys
-	;;
+	echo "$UNAME_MACHINE"-pc-msys
+	exit ;;
     i*:PW*:*)
-	GUESS=$UNAME_MACHINE-pc-pw32
-	;;
-    *:SerenityOS:*:*)
-        GUESS=$UNAME_MACHINE-pc-serenity
-        ;;
+	echo "$UNAME_MACHINE"-pc-pw32
+	exit ;;
     *:Interix*:*)
-	case $UNAME_MACHINE in
+	case "$UNAME_MACHINE" in
 	    x86)
-		GUESS=i586-pc-interix$UNAME_RELEASE
-		;;
+		echo i586-pc-interix"$UNAME_RELEASE"
+		exit ;;
 	    authenticamd | genuineintel | EM64T)
-		GUESS=x86_64-unknown-interix$UNAME_RELEASE
-		;;
+		echo x86_64-unknown-interix"$UNAME_RELEASE"
+		exit ;;
 	    IA64)
-		GUESS=ia64-unknown-interix$UNAME_RELEASE
-		;;
+		echo ia64-unknown-interix"$UNAME_RELEASE"
+		exit ;;
 	esac ;;
     i*:UWIN*:*)
-	GUESS=$UNAME_MACHINE-pc-uwin
-	;;
+	echo "$UNAME_MACHINE"-pc-uwin
+	exit ;;
     amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
-	GUESS=x86_64-pc-cygwin
-	;;
+	echo x86_64-unknown-cygwin
+	exit ;;
     prep*:SunOS:5.*:*)
-	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
-	GUESS=powerpcle-unknown-solaris2$SUN_REL
-	;;
+	echo powerpcle-unknown-solaris2"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`"
+	exit ;;
     *:GNU:*:*)
 	# the GNU system
-	GNU_ARCH=`echo "$UNAME_MACHINE" | sed -e 's,[-/].*$,,'`
-	GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's,/.*$,,'`
-	GUESS=$GNU_ARCH-unknown-$LIBC$GNU_REL
-	;;
+	echo "`echo "$UNAME_MACHINE"|sed -e 's,[-/].*$,,'`-unknown-$LIBC`echo "$UNAME_RELEASE"|sed -e 's,/.*$,,'`"
+	exit ;;
     *:GNU/*:*:*)
 	# other systems with GNU libc and userland
-	GNU_SYS=`echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"`
-	GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
-	GUESS=$UNAME_MACHINE-unknown-$GNU_SYS$GNU_REL-$LIBC
-	;;
-    *:Minix:*:*)
-	GUESS=$UNAME_MACHINE-unknown-minix
-	;;
+	echo "$UNAME_MACHINE-unknown-`echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"``echo "$UNAME_RELEASE"|sed -e 's/[-(].*//'`-$LIBC"
+	exit ;;
+    i*86:Minix:*:*)
+	echo "$UNAME_MACHINE"-pc-minix
+	exit ;;
     aarch64:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     aarch64_be:Linux:*:*)
 	UNAME_MACHINE=aarch64_be
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     alpha:Linux:*:*)
-	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' /proc/cpuinfo 2>/dev/null` in
+	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
 	  EV5)   UNAME_MACHINE=alphaev5 ;;
 	  EV56)  UNAME_MACHINE=alphaev56 ;;
 	  PCA56) UNAME_MACHINE=alphapca56 ;;
@@ -988,225 +916,187 @@ EOF
 	esac
 	objdump --private-headers /bin/sh | grep -q ld.so.1
 	if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
-    arc:Linux:*:* | arceb:Linux:*:* | arc32:Linux:*:* | arc64:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    arc:Linux:*:* | arceb:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     arm*:Linux:*:*)
-	set_cc_for_build
+	eval "$set_cc_for_build"
 	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
 	    | grep -q __ARM_EABI__
 	then
-	    GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
+	    echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	else
 	    if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
 		| grep -q __ARM_PCS_VFP
 	    then
-		GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabi
+		echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"eabi
 	    else
-		GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabihf
+		echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"eabihf
 	    fi
 	fi
-	;;
+	exit ;;
     avr32*:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     cris:Linux:*:*)
-	GUESS=$UNAME_MACHINE-axis-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-axis-linux-"$LIBC"
+	exit ;;
     crisv32:Linux:*:*)
-	GUESS=$UNAME_MACHINE-axis-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-axis-linux-"$LIBC"
+	exit ;;
     e2k:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     frv:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     hexagon:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     i*86:Linux:*:*)
-	GUESS=$UNAME_MACHINE-pc-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-pc-linux-"$LIBC"
+	exit ;;
     ia64:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     k1om:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
-    loongarch32:Linux:*:* | loongarch64:Linux:*:* | loongarchx32:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     m32r*:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     m68*:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     mips:Linux:*:* | mips64:Linux:*:*)
-	set_cc_for_build
-	IS_GLIBC=0
-	test x"${LIBC}" = xgnu && IS_GLIBC=1
+	eval "$set_cc_for_build"
 	sed 's/^	//' << EOF > "$dummy.c"
 	#undef CPU
-	#undef mips
-	#undef mipsel
-	#undef mips64
-	#undef mips64el
-	#if ${IS_GLIBC} && defined(_ABI64)
-	LIBCABI=gnuabi64
-	#else
-	#if ${IS_GLIBC} && defined(_ABIN32)
-	LIBCABI=gnuabin32
-	#else
-	LIBCABI=${LIBC}
-	#endif
-	#endif
-
-	#if ${IS_GLIBC} && defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
-	CPU=mipsisa64r6
-	#else
-	#if ${IS_GLIBC} && !defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
-	CPU=mipsisa32r6
-	#else
-	#if defined(__mips64)
-	CPU=mips64
-	#else
-	CPU=mips
-	#endif
-	#endif
-	#endif
-
+	#undef ${UNAME_MACHINE}
+	#undef ${UNAME_MACHINE}el
 	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
-	MIPS_ENDIAN=el
+	CPU=${UNAME_MACHINE}el
 	#else
 	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
-	MIPS_ENDIAN=
+	CPU=${UNAME_MACHINE}
 	#else
-	MIPS_ENDIAN=
+	CPU=
 	#endif
 	#endif
 EOF
-	cc_set_vars=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^CPU\|^MIPS_ENDIAN\|^LIBCABI'`
-	eval "$cc_set_vars"
-	test "x$CPU" != x && { echo "$CPU${MIPS_ENDIAN}-unknown-linux-$LIBCABI"; exit; }
+	eval "`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^CPU'`"
+	test "x$CPU" != x && { echo "$CPU-unknown-linux-$LIBC"; exit; }
 	;;
     mips64el:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     openrisc*:Linux:*:*)
-	GUESS=or1k-unknown-linux-$LIBC
-	;;
+	echo or1k-unknown-linux-"$LIBC"
+	exit ;;
     or32:Linux:*:* | or1k*:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     padre:Linux:*:*)
-	GUESS=sparc-unknown-linux-$LIBC
-	;;
+	echo sparc-unknown-linux-"$LIBC"
+	exit ;;
     parisc64:Linux:*:* | hppa64:Linux:*:*)
-	GUESS=hppa64-unknown-linux-$LIBC
-	;;
+	echo hppa64-unknown-linux-"$LIBC"
+	exit ;;
     parisc:Linux:*:* | hppa:Linux:*:*)
 	# Look for CPU level
 	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
-	  PA7*) GUESS=hppa1.1-unknown-linux-$LIBC ;;
-	  PA8*) GUESS=hppa2.0-unknown-linux-$LIBC ;;
-	  *)    GUESS=hppa-unknown-linux-$LIBC ;;
+	  PA7*) echo hppa1.1-unknown-linux-"$LIBC" ;;
+	  PA8*) echo hppa2.0-unknown-linux-"$LIBC" ;;
+	  *)    echo hppa-unknown-linux-"$LIBC" ;;
 	esac
-	;;
+	exit ;;
     ppc64:Linux:*:*)
-	GUESS=powerpc64-unknown-linux-$LIBC
-	;;
+	echo powerpc64-unknown-linux-"$LIBC"
+	exit ;;
     ppc:Linux:*:*)
-	GUESS=powerpc-unknown-linux-$LIBC
-	;;
+	echo powerpc-unknown-linux-"$LIBC"
+	exit ;;
     ppc64le:Linux:*:*)
-	GUESS=powerpc64le-unknown-linux-$LIBC
-	;;
+	echo powerpc64le-unknown-linux-"$LIBC"
+	exit ;;
     ppcle:Linux:*:*)
-	GUESS=powerpcle-unknown-linux-$LIBC
-	;;
-    riscv32:Linux:*:* | riscv32be:Linux:*:* | riscv64:Linux:*:* | riscv64be:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo powerpcle-unknown-linux-"$LIBC"
+	exit ;;
+    riscv32:Linux:*:* | riscv64:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     s390:Linux:*:* | s390x:Linux:*:*)
-	GUESS=$UNAME_MACHINE-ibm-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-ibm-linux-"$LIBC"
+	exit ;;
     sh64*:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     sh*:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     sparc:Linux:*:* | sparc64:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     tile*:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     vax:Linux:*:*)
-	GUESS=$UNAME_MACHINE-dec-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-dec-linux-"$LIBC"
+	exit ;;
     x86_64:Linux:*:*)
-	set_cc_for_build
-	LIBCABI=$LIBC
-	if test "$CC_FOR_BUILD" != no_compiler_found; then
-	    if (echo '#ifdef __ILP32__'; echo IS_X32; echo '#endif') | \
-		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
-		grep IS_X32 >/dev/null
-	    then
-		LIBCABI=${LIBC}x32
-	    fi
+	if objdump -f /bin/sh | grep -q elf32-x86-64; then
+	    echo "$UNAME_MACHINE"-pc-linux-"$LIBC"x32
+	else
+	    echo "$UNAME_MACHINE"-pc-linux-"$LIBC"
 	fi
-	GUESS=$UNAME_MACHINE-pc-linux-$LIBCABI
-	;;
+	exit ;;
     xtensa*:Linux:*:*)
-	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
-	;;
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     i*86:DYNIX/ptx:4*:*)
 	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
 	# earlier versions are messed up and put the nodename in both
 	# sysname and nodename.
-	GUESS=i386-sequent-sysv4
-	;;
+	echo i386-sequent-sysv4
+	exit ;;
     i*86:UNIX_SV:4.2MP:2.*)
 	# Unixware is an offshoot of SVR4, but it has its own version
 	# number series starting with 2...
 	# I am not positive that other SVR4 systems won't match this,
 	# I just have to hope.  -- rms.
 	# Use sysv4.2uw... so that sysv4* matches it.
-	GUESS=$UNAME_MACHINE-pc-sysv4.2uw$UNAME_VERSION
-	;;
+	echo "$UNAME_MACHINE"-pc-sysv4.2uw"$UNAME_VERSION"
+	exit ;;
     i*86:OS/2:*:*)
 	# If we were able to find `uname', then EMX Unix compatibility
 	# is probably installed.
-	GUESS=$UNAME_MACHINE-pc-os2-emx
-	;;
+	echo "$UNAME_MACHINE"-pc-os2-emx
+	exit ;;
     i*86:XTS-300:*:STOP)
-	GUESS=$UNAME_MACHINE-unknown-stop
-	;;
+	echo "$UNAME_MACHINE"-unknown-stop
+	exit ;;
     i*86:atheos:*:*)
-	GUESS=$UNAME_MACHINE-unknown-atheos
-	;;
+	echo "$UNAME_MACHINE"-unknown-atheos
+	exit ;;
     i*86:syllable:*:*)
-	GUESS=$UNAME_MACHINE-pc-syllable
-	;;
+	echo "$UNAME_MACHINE"-pc-syllable
+	exit ;;
     i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*)
-	GUESS=i386-unknown-lynxos$UNAME_RELEASE
-	;;
+	echo i386-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
     i*86:*DOS:*:*)
-	GUESS=$UNAME_MACHINE-pc-msdosdjgpp
-	;;
+	echo "$UNAME_MACHINE"-pc-msdosdjgpp
+	exit ;;
     i*86:*:4.*:*)
 	UNAME_REL=`echo "$UNAME_RELEASE" | sed 's/\/MP$//'`
 	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
-		GUESS=$UNAME_MACHINE-univel-sysv$UNAME_REL
+		echo "$UNAME_MACHINE"-univel-sysv"$UNAME_REL"
 	else
-		GUESS=$UNAME_MACHINE-pc-sysv$UNAME_REL
+		echo "$UNAME_MACHINE"-pc-sysv"$UNAME_REL"
 	fi
-	;;
+	exit ;;
     i*86:*:5:[678]*)
 	# UnixWare 7.x, OpenUNIX and OpenServer 6.
 	case `/bin/uname -X | grep "^Machine"` in
@@ -1214,12 +1104,12 @@ EOF
 	    *Pentium)	     UNAME_MACHINE=i586 ;;
 	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
 	esac
-	GUESS=$UNAME_MACHINE-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
-	;;
+	echo "$UNAME_MACHINE-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}{$UNAME_VERSION}"
+	exit ;;
     i*86:*:3.2:*)
 	if test -f /usr/options/cb.name; then
 		UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
-		GUESS=$UNAME_MACHINE-pc-isc$UNAME_REL
+		echo "$UNAME_MACHINE"-pc-isc"$UNAME_REL"
 	elif /bin/uname -X 2>/dev/null >/dev/null ; then
 		UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
 		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
@@ -1229,11 +1119,11 @@ EOF
 			&& UNAME_MACHINE=i686
 		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
 			&& UNAME_MACHINE=i686
-		GUESS=$UNAME_MACHINE-pc-sco$UNAME_REL
+		echo "$UNAME_MACHINE"-pc-sco"$UNAME_REL"
 	else
-		GUESS=$UNAME_MACHINE-pc-sysv32
+		echo "$UNAME_MACHINE"-pc-sysv32
 	fi
-	;;
+	exit ;;
     pc:*:*:*)
 	# Left here for compatibility:
 	# uname -m prints for DJGPP always 'pc', but it prints nothing about
@@ -1241,31 +1131,31 @@ EOF
 	# Note: whatever this is, it MUST be the same as what config.sub
 	# prints for the "djgpp" host, or else GDB configure will decide that
 	# this is a cross-build.
-	GUESS=i586-pc-msdosdjgpp
-	;;
+	echo i586-pc-msdosdjgpp
+	exit ;;
     Intel:Mach:3*:*)
-	GUESS=i386-pc-mach3
-	;;
+	echo i386-pc-mach3
+	exit ;;
     paragon:*:*:*)
-	GUESS=i860-intel-osf1
-	;;
+	echo i860-intel-osf1
+	exit ;;
     i860:*:4.*:*) # i860-SVR4
 	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
-	  GUESS=i860-stardent-sysv$UNAME_RELEASE    # Stardent Vistra i860-SVR4
+	  echo i860-stardent-sysv"$UNAME_RELEASE" # Stardent Vistra i860-SVR4
 	else # Add other i860-SVR4 vendors below as they are discovered.
-	  GUESS=i860-unknown-sysv$UNAME_RELEASE     # Unknown i860-SVR4
+	  echo i860-unknown-sysv"$UNAME_RELEASE"  # Unknown i860-SVR4
 	fi
-	;;
+	exit ;;
     mini*:CTIX:SYS*5:*)
 	# "miniframe"
-	GUESS=m68010-convergent-sysv
-	;;
+	echo m68010-convergent-sysv
+	exit ;;
     mc68k:UNIX:SYSTEM5:3.51m)
-	GUESS=m68k-convergent-sysv
-	;;
+	echo m68k-convergent-sysv
+	exit ;;
     M680?0:D-NIX:5.3:*)
-	GUESS=m68k-diab-dnix
-	;;
+	echo m68k-diab-dnix
+	exit ;;
     M68*:*:R3V[5678]*:*)
 	test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
     3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
@@ -1290,404 +1180,249 @@ EOF
 	/bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
 	    && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;;
     m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
-	GUESS=m68k-unknown-lynxos$UNAME_RELEASE
-	;;
+	echo m68k-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
     mc68030:UNIX_System_V:4.*:*)
-	GUESS=m68k-atari-sysv4
-	;;
+	echo m68k-atari-sysv4
+	exit ;;
     TSUNAMI:LynxOS:2.*:*)
-	GUESS=sparc-unknown-lynxos$UNAME_RELEASE
-	;;
+	echo sparc-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
     rs6000:LynxOS:2.*:*)
-	GUESS=rs6000-unknown-lynxos$UNAME_RELEASE
-	;;
+	echo rs6000-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
     PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*)
-	GUESS=powerpc-unknown-lynxos$UNAME_RELEASE
-	;;
+	echo powerpc-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
     SM[BE]S:UNIX_SV:*:*)
-	GUESS=mips-dde-sysv$UNAME_RELEASE
-	;;
+	echo mips-dde-sysv"$UNAME_RELEASE"
+	exit ;;
     RM*:ReliantUNIX-*:*:*)
-	GUESS=mips-sni-sysv4
-	;;
+	echo mips-sni-sysv4
+	exit ;;
     RM*:SINIX-*:*:*)
-	GUESS=mips-sni-sysv4
-	;;
+	echo mips-sni-sysv4
+	exit ;;
     *:SINIX-*:*:*)
 	if uname -p 2>/dev/null >/dev/null ; then
 		UNAME_MACHINE=`(uname -p) 2>/dev/null`
-		GUESS=$UNAME_MACHINE-sni-sysv4
+		echo "$UNAME_MACHINE"-sni-sysv4
 	else
-		GUESS=ns32k-sni-sysv
+		echo ns32k-sni-sysv
 	fi
-	;;
+	exit ;;
     PENTIUM:*:4.0*:*)	# Unisys `ClearPath HMP IX 4000' SVR4/MP effort
 			# says <Richard.M.Bartel@ccMail.Census.GOV>
-	GUESS=i586-unisys-sysv4
-	;;
+	echo i586-unisys-sysv4
+	exit ;;
     *:UNIX_System_V:4*:FTX*)
 	# From Gerald Hewes <hewes@openmarket.com>.
 	# How about differentiating between stratus architectures? -djm
-	GUESS=hppa1.1-stratus-sysv4
-	;;
+	echo hppa1.1-stratus-sysv4
+	exit ;;
     *:*:*:FTX*)
 	# From seanf@swdc.stratus.com.
-	GUESS=i860-stratus-sysv4
-	;;
+	echo i860-stratus-sysv4
+	exit ;;
     i*86:VOS:*:*)
 	# From Paul.Green@stratus.com.
-	GUESS=$UNAME_MACHINE-stratus-vos
-	;;
+	echo "$UNAME_MACHINE"-stratus-vos
+	exit ;;
     *:VOS:*:*)
 	# From Paul.Green@stratus.com.
-	GUESS=hppa1.1-stratus-vos
-	;;
+	echo hppa1.1-stratus-vos
+	exit ;;
     mc68*:A/UX:*:*)
-	GUESS=m68k-apple-aux$UNAME_RELEASE
-	;;
+	echo m68k-apple-aux"$UNAME_RELEASE"
+	exit ;;
     news*:NEWS-OS:6*:*)
-	GUESS=mips-sony-newsos6
-	;;
+	echo mips-sony-newsos6
+	exit ;;
     R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
-	if test -d /usr/nec; then
-		GUESS=mips-nec-sysv$UNAME_RELEASE
+	if [ -d /usr/nec ]; then
+		echo mips-nec-sysv"$UNAME_RELEASE"
 	else
-		GUESS=mips-unknown-sysv$UNAME_RELEASE
+		echo mips-unknown-sysv"$UNAME_RELEASE"
 	fi
-	;;
+	exit ;;
     BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
-	GUESS=powerpc-be-beos
-	;;
+	echo powerpc-be-beos
+	exit ;;
     BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
-	GUESS=powerpc-apple-beos
-	;;
+	echo powerpc-apple-beos
+	exit ;;
     BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
-	GUESS=i586-pc-beos
-	;;
+	echo i586-pc-beos
+	exit ;;
     BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
-	GUESS=i586-pc-haiku
-	;;
+	echo i586-pc-haiku
+	exit ;;
     x86_64:Haiku:*:*)
-	GUESS=x86_64-unknown-haiku
-	;;
+	echo x86_64-unknown-haiku
+	exit ;;
     SX-4:SUPER-UX:*:*)
-	GUESS=sx4-nec-superux$UNAME_RELEASE
-	;;
+	echo sx4-nec-superux"$UNAME_RELEASE"
+	exit ;;
     SX-5:SUPER-UX:*:*)
-	GUESS=sx5-nec-superux$UNAME_RELEASE
-	;;
+	echo sx5-nec-superux"$UNAME_RELEASE"
+	exit ;;
     SX-6:SUPER-UX:*:*)
-	GUESS=sx6-nec-superux$UNAME_RELEASE
-	;;
+	echo sx6-nec-superux"$UNAME_RELEASE"
+	exit ;;
     SX-7:SUPER-UX:*:*)
-	GUESS=sx7-nec-superux$UNAME_RELEASE
-	;;
+	echo sx7-nec-superux"$UNAME_RELEASE"
+	exit ;;
     SX-8:SUPER-UX:*:*)
-	GUESS=sx8-nec-superux$UNAME_RELEASE
-	;;
+	echo sx8-nec-superux"$UNAME_RELEASE"
+	exit ;;
     SX-8R:SUPER-UX:*:*)
-	GUESS=sx8r-nec-superux$UNAME_RELEASE
-	;;
+	echo sx8r-nec-superux"$UNAME_RELEASE"
+	exit ;;
     SX-ACE:SUPER-UX:*:*)
-	GUESS=sxace-nec-superux$UNAME_RELEASE
-	;;
+	echo sxace-nec-superux"$UNAME_RELEASE"
+	exit ;;
     Power*:Rhapsody:*:*)
-	GUESS=powerpc-apple-rhapsody$UNAME_RELEASE
-	;;
+	echo powerpc-apple-rhapsody"$UNAME_RELEASE"
+	exit ;;
     *:Rhapsody:*:*)
-	GUESS=$UNAME_MACHINE-apple-rhapsody$UNAME_RELEASE
-	;;
-    arm64:Darwin:*:*)
-	GUESS=aarch64-apple-darwin$UNAME_RELEASE
-	;;
+	echo "$UNAME_MACHINE"-apple-rhapsody"$UNAME_RELEASE"
+	exit ;;
     *:Darwin:*:*)
-	UNAME_PROCESSOR=`uname -p`
-	case $UNAME_PROCESSOR in
-	    unknown) UNAME_PROCESSOR=powerpc ;;
-	esac
-	if command -v xcode-select > /dev/null 2> /dev/null && \
-		! xcode-select --print-path > /dev/null 2> /dev/null ; then
-	    # Avoid executing cc if there is no toolchain installed as
-	    # cc will be a stub that puts up a graphical alert
-	    # prompting the user to install developer tools.
-	    CC_FOR_BUILD=no_compiler_found
-	else
-	    set_cc_for_build
+	UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
+	eval "$set_cc_for_build"
+	if test "$UNAME_PROCESSOR" = unknown ; then
+	    UNAME_PROCESSOR=powerpc
 	fi
-	if test "$CC_FOR_BUILD" != no_compiler_found; then
-	    if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
-		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
-		   grep IS_64BIT_ARCH >/dev/null
-	    then
-		case $UNAME_PROCESSOR in
-		    i386) UNAME_PROCESSOR=x86_64 ;;
-		    powerpc) UNAME_PROCESSOR=powerpc64 ;;
-		esac
-	    fi
-	    # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc
-	    if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \
-		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
-		   grep IS_PPC >/dev/null
-	    then
-		UNAME_PROCESSOR=powerpc
+	if test "`echo "$UNAME_RELEASE" | sed -e 's/\..*//'`" -le 10 ; then
+	    if [ "$CC_FOR_BUILD" != no_compiler_found ]; then
+		if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
+		       (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		       grep IS_64BIT_ARCH >/dev/null
+		then
+		    case $UNAME_PROCESSOR in
+			i386) UNAME_PROCESSOR=x86_64 ;;
+			powerpc) UNAME_PROCESSOR=powerpc64 ;;
+		    esac
+		fi
+		# On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc
+		if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \
+		       (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		       grep IS_PPC >/dev/null
+		then
+		    UNAME_PROCESSOR=powerpc
+		fi
 	    fi
 	elif test "$UNAME_PROCESSOR" = i386 ; then
-	    # uname -m returns i386 or x86_64
-	    UNAME_PROCESSOR=$UNAME_MACHINE
+	    # Avoid executing cc on OS X 10.9, as it ships with a stub
+	    # that puts up a graphical alert prompting to install
+	    # developer tools.  Any system running Mac OS X 10.7 or
+	    # later (Darwin 11 and later) is required to have a 64-bit
+	    # processor. This is not true of the ARM version of Darwin
+	    # that Apple uses in portable devices.
+	    UNAME_PROCESSOR=x86_64
 	fi
-	GUESS=$UNAME_PROCESSOR-apple-darwin$UNAME_RELEASE
-	;;
+	echo "$UNAME_PROCESSOR"-apple-darwin"$UNAME_RELEASE"
+	exit ;;
     *:procnto*:*:* | *:QNX:[0123456789]*:*)
 	UNAME_PROCESSOR=`uname -p`
 	if test "$UNAME_PROCESSOR" = x86; then
 		UNAME_PROCESSOR=i386
 		UNAME_MACHINE=pc
 	fi
-	GUESS=$UNAME_PROCESSOR-$UNAME_MACHINE-nto-qnx$UNAME_RELEASE
-	;;
+	echo "$UNAME_PROCESSOR"-"$UNAME_MACHINE"-nto-qnx"$UNAME_RELEASE"
+	exit ;;
     *:QNX:*:4*)
-	GUESS=i386-pc-qnx
-	;;
+	echo i386-pc-qnx
+	exit ;;
     NEO-*:NONSTOP_KERNEL:*:*)
-	GUESS=neo-tandem-nsk$UNAME_RELEASE
-	;;
+	echo neo-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
     NSE-*:NONSTOP_KERNEL:*:*)
-	GUESS=nse-tandem-nsk$UNAME_RELEASE
-	;;
+	echo nse-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
     NSR-*:NONSTOP_KERNEL:*:*)
-	GUESS=nsr-tandem-nsk$UNAME_RELEASE
-	;;
+	echo nsr-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
     NSV-*:NONSTOP_KERNEL:*:*)
-	GUESS=nsv-tandem-nsk$UNAME_RELEASE
-	;;
+	echo nsv-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
     NSX-*:NONSTOP_KERNEL:*:*)
-	GUESS=nsx-tandem-nsk$UNAME_RELEASE
-	;;
+	echo nsx-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
     *:NonStop-UX:*:*)
-	GUESS=mips-compaq-nonstopux
-	;;
+	echo mips-compaq-nonstopux
+	exit ;;
     BS2000:POSIX*:*:*)
-	GUESS=bs2000-siemens-sysv
-	;;
+	echo bs2000-siemens-sysv
+	exit ;;
     DS/*:UNIX_System_V:*:*)
-	GUESS=$UNAME_MACHINE-$UNAME_SYSTEM-$UNAME_RELEASE
-	;;
+	echo "$UNAME_MACHINE"-"$UNAME_SYSTEM"-"$UNAME_RELEASE"
+	exit ;;
     *:Plan9:*:*)
 	# "uname -m" is not consistent, so use $cputype instead. 386
 	# is converted to i386 for consistency with other x86
 	# operating systems.
-	if test "${cputype-}" = 386; then
+	if test "$cputype" = 386; then
 	    UNAME_MACHINE=i386
-	elif test "x${cputype-}" != x; then
-	    UNAME_MACHINE=$cputype
+	else
+	    UNAME_MACHINE="$cputype"
 	fi
-	GUESS=$UNAME_MACHINE-unknown-plan9
-	;;
+	echo "$UNAME_MACHINE"-unknown-plan9
+	exit ;;
     *:TOPS-10:*:*)
-	GUESS=pdp10-unknown-tops10
-	;;
+	echo pdp10-unknown-tops10
+	exit ;;
     *:TENEX:*:*)
-	GUESS=pdp10-unknown-tenex
-	;;
+	echo pdp10-unknown-tenex
+	exit ;;
     KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
-	GUESS=pdp10-dec-tops20
-	;;
+	echo pdp10-dec-tops20
+	exit ;;
     XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
-	GUESS=pdp10-xkl-tops20
-	;;
+	echo pdp10-xkl-tops20
+	exit ;;
     *:TOPS-20:*:*)
-	GUESS=pdp10-unknown-tops20
-	;;
+	echo pdp10-unknown-tops20
+	exit ;;
     *:ITS:*:*)
-	GUESS=pdp10-unknown-its
-	;;
+	echo pdp10-unknown-its
+	exit ;;
     SEI:*:*:SEIUX)
-	GUESS=mips-sei-seiux$UNAME_RELEASE
-	;;
+	echo mips-sei-seiux"$UNAME_RELEASE"
+	exit ;;
     *:DragonFly:*:*)
-	DRAGONFLY_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
-	GUESS=$UNAME_MACHINE-unknown-dragonfly$DRAGONFLY_REL
-	;;
+	echo "$UNAME_MACHINE"-unknown-dragonfly"`echo "$UNAME_RELEASE"|sed -e 's/[-(].*//'`"
+	exit ;;
     *:*VMS:*:*)
 	UNAME_MACHINE=`(uname -p) 2>/dev/null`
-	case $UNAME_MACHINE in
-	    A*) GUESS=alpha-dec-vms ;;
-	    I*) GUESS=ia64-dec-vms ;;
-	    V*) GUESS=vax-dec-vms ;;
+	case "$UNAME_MACHINE" in
+	    A*) echo alpha-dec-vms ; exit ;;
+	    I*) echo ia64-dec-vms ; exit ;;
+	    V*) echo vax-dec-vms ; exit ;;
 	esac ;;
     *:XENIX:*:SysV)
-	GUESS=i386-pc-xenix
-	;;
+	echo i386-pc-xenix
+	exit ;;
     i*86:skyos:*:*)
-	SKYOS_REL=`echo "$UNAME_RELEASE" | sed -e 's/ .*$//'`
-	GUESS=$UNAME_MACHINE-pc-skyos$SKYOS_REL
-	;;
+	echo "$UNAME_MACHINE"-pc-skyos"`echo "$UNAME_RELEASE" | sed -e 's/ .*$//'`"
+	exit ;;
     i*86:rdos:*:*)
-	GUESS=$UNAME_MACHINE-pc-rdos
-	;;
-    i*86:Fiwix:*:*)
-	GUESS=$UNAME_MACHINE-pc-fiwix
-	;;
-    *:AROS:*:*)
-	GUESS=$UNAME_MACHINE-unknown-aros
-	;;
+	echo "$UNAME_MACHINE"-pc-rdos
+	exit ;;
+    i*86:AROS:*:*)
+	echo "$UNAME_MACHINE"-pc-aros
+	exit ;;
     x86_64:VMkernel:*:*)
-	GUESS=$UNAME_MACHINE-unknown-esx
-	;;
+	echo "$UNAME_MACHINE"-unknown-esx
+	exit ;;
     amd64:Isilon\ OneFS:*:*)
-	GUESS=x86_64-unknown-onefs
-	;;
-    *:Unleashed:*:*)
-	GUESS=$UNAME_MACHINE-unknown-unleashed$UNAME_RELEASE
-	;;
+	echo x86_64-unknown-onefs
+	exit ;;
 esac
 
-# Do we have a guess based on uname results?
-if test "x$GUESS" != x; then
-    echo "$GUESS"
-    exit
-fi
-
-# No uname command or uname output not recognized.
-set_cc_for_build
-cat > "$dummy.c" <<EOF
-#ifdef _SEQUENT_
-#include <sys/types.h>
-#include <sys/utsname.h>
-#endif
-#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
-#if defined (vax) || defined (__vax) || defined (__vax__) || defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
-#include <signal.h>
-#if defined(_SIZE_T_) || defined(SIGLOST)
-#include <sys/utsname.h>
-#endif
-#endif
-#endif
-main ()
-{
-#if defined (sony)
-#if defined (MIPSEB)
-  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
-     I don't know....  */
-  printf ("mips-sony-bsd\n"); exit (0);
-#else
-#include <sys/param.h>
-  printf ("m68k-sony-newsos%s\n",
-#ifdef NEWSOS4
-  "4"
-#else
-  ""
-#endif
-  ); exit (0);
-#endif
-#endif
-
-#if defined (NeXT)
-#if !defined (__ARCHITECTURE__)
-#define __ARCHITECTURE__ "m68k"
-#endif
-  int version;
-  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
-  if (version < 4)
-    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
-  else
-    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
-  exit (0);
-#endif
-
-#if defined (MULTIMAX) || defined (n16)
-#if defined (UMAXV)
-  printf ("ns32k-encore-sysv\n"); exit (0);
-#else
-#if defined (CMU)
-  printf ("ns32k-encore-mach\n"); exit (0);
-#else
-  printf ("ns32k-encore-bsd\n"); exit (0);
-#endif
-#endif
-#endif
-
-#if defined (__386BSD__)
-  printf ("i386-pc-bsd\n"); exit (0);
-#endif
-
-#if defined (sequent)
-#if defined (i386)
-  printf ("i386-sequent-dynix\n"); exit (0);
-#endif
-#if defined (ns32000)
-  printf ("ns32k-sequent-dynix\n"); exit (0);
-#endif
-#endif
-
-#if defined (_SEQUENT_)
-  struct utsname un;
-
-  uname(&un);
-  if (strncmp(un.version, "V2", 2) == 0) {
-    printf ("i386-sequent-ptx2\n"); exit (0);
-  }
-  if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
-    printf ("i386-sequent-ptx1\n"); exit (0);
-  }
-  printf ("i386-sequent-ptx\n"); exit (0);
-#endif
-
-#if defined (vax)
-#if !defined (ultrix)
-#include <sys/param.h>
-#if defined (BSD)
-#if BSD == 43
-  printf ("vax-dec-bsd4.3\n"); exit (0);
-#else
-#if BSD == 199006
-  printf ("vax-dec-bsd4.3reno\n"); exit (0);
-#else
-  printf ("vax-dec-bsd\n"); exit (0);
-#endif
-#endif
-#else
-  printf ("vax-dec-bsd\n"); exit (0);
-#endif
-#else
-#if defined(_SIZE_T_) || defined(SIGLOST)
-  struct utsname un;
-  uname (&un);
-  printf ("vax-dec-ultrix%s\n", un.release); exit (0);
-#else
-  printf ("vax-dec-ultrix\n"); exit (0);
-#endif
-#endif
-#endif
-#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
-#if defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
-#if defined(_SIZE_T_) || defined(SIGLOST)
-  struct utsname *un;
-  uname (&un);
-  printf ("mips-dec-ultrix%s\n", un.release); exit (0);
-#else
-  printf ("mips-dec-ultrix\n"); exit (0);
-#endif
-#endif
-#endif
-
-#if defined (alliant) && defined (i860)
-  printf ("i860-alliant-bsd\n"); exit (0);
-#endif
-
-  exit (1);
-}
-EOF
-
-$CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=`"$dummy"` &&
-	{ echo "$SYSTEM_NAME"; exit; }
-
-# Apollos put the system type in the environment.
-test -d /usr/apollo && { echo "$ISP-apollo-$SYSTYPE"; exit; }
-
 echo "$0: unable to guess system type" >&2
 
-case $UNAME_MACHINE:$UNAME_SYSTEM in
+case "$UNAME_MACHINE:$UNAME_SYSTEM" in
     mips:Linux | mips64:Linux)
 	# If we got here on MIPS GNU/Linux, output extra information.
 	cat >&2 <<EOF
@@ -1704,17 +1439,9 @@ This script (version $timestamp), has failed to recognize the
 operating system you are using. If your script is old, overwrite *all*
 copies of config.guess and config.sub with the latest versions from:
 
-  https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
+  https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess
 and
-  https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
-EOF
-
-our_year=`echo $timestamp | sed 's,-.*,,'`
-thisyear=`date +%Y`
-# shellcheck disable=SC2003
-script_age=`expr "$thisyear" - "$our_year"`
-if test "$script_age" -lt 3 ; then
-   cat >&2 <<EOF
+  https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub
 
 If $0 has already been updated, send the following data and any
 information you think might be pertinent to config-patches@gnu.org to
@@ -1742,12 +1469,11 @@ UNAME_RELEASE = "$UNAME_RELEASE"
 UNAME_SYSTEM  = "$UNAME_SYSTEM"
 UNAME_VERSION = "$UNAME_VERSION"
 EOF
-fi
 
 exit 1
 
 # Local variables:
-# eval: (add-hook 'before-save-hook 'time-stamp)
+# eval: (add-hook 'write-file-functions 'time-stamp)
 # time-stamp-start: "timestamp='"
 # time-stamp-format: "%:y-%02m-%02d"
 # time-stamp-end: "'"
diff --git a/build-aux/config.sub b/build-aux/config.sub
index dba16e8..1d8e98b 100755
--- a/build-aux/config.sub
+++ b/build-aux/config.sub
@@ -1,14 +1,12 @@
 #! /bin/sh
 # Configuration validation subroutine script.
-#   Copyright 1992-2022 Free Software Foundation, Inc.
+#   Copyright 1992-2018 Free Software Foundation, Inc.
 
-# shellcheck disable=SC2006,SC2268 # see below for rationale
-
-timestamp='2022-01-03'
+timestamp='2018-02-22'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
+# the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful, but
@@ -35,7 +33,7 @@ timestamp='2022-01-03'
 # Otherwise, we print the canonical config type on stdout and succeed.
 
 # You can get the latest version of this script from:
-# https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
+# https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub
 
 # This file is supposed to be the same for all GNU packages
 # and recognize all the CPU types, system types and aliases
@@ -52,13 +50,6 @@ timestamp='2022-01-03'
 #	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
 # It is wrong to echo any other type of specification.
 
-# The "shellcheck disable" line above the timestamp inhibits complaints
-# about features and limitations of the classic Bourne shell that were
-# superseded or lifted in POSIX.  However, this script identifies a wide
-# variety of pre-POSIX systems that do not have POSIX shells at all, and
-# even some reasonably current systems (Solaris 10 as case-in-point) still
-# have a pre-POSIX /bin/sh.
-
 me=`echo "$0" | sed -e 's,.*/,,'`
 
 usage="\
@@ -76,7 +67,7 @@ Report bugs and patches to <config-patches@gnu.org>."
 version="\
 GNU config.sub ($timestamp)
 
-Copyright 1992-2022 Free Software Foundation, Inc.
+Copyright 1992-2018 Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -98,7 +89,7 @@ while test $# -gt 0 ; do
     - )	# Use stdin as input.
        break ;;
     -* )
-       echo "$me: invalid option $1$help" >&2
+       echo "$me: invalid option $1$help"
        exit 1 ;;
 
     *local*)
@@ -119,1186 +110,1223 @@ case $# in
     exit 1;;
 esac
 
-# Split fields of configuration type
-# shellcheck disable=SC2162
-saved_IFS=$IFS
-IFS="-" read field1 field2 field3 field4 <<EOF
-$1
-EOF
-IFS=$saved_IFS
+# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
+# Here we must recognize all the valid KERNEL-OS combinations.
+maybe_os=`echo "$1" | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
+case $maybe_os in
+  nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
+  linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
+  knetbsd*-gnu* | netbsd*-gnu* | netbsd*-eabi* | \
+  kopensolaris*-gnu* | cloudabi*-eabi* | \
+  storm-chaos* | os2-emx* | rtmk-nova*)
+    os=-$maybe_os
+    basic_machine=`echo "$1" | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
+    ;;
+  android-linux)
+    os=-linux-android
+    basic_machine=`echo "$1" | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`-unknown
+    ;;
+  *)
+    basic_machine=`echo "$1" | sed 's/-[^-]*$//'`
+    if [ "$basic_machine" != "$1" ]
+    then os=`echo "$1" | sed 's/.*-/-/'`
+    else os=; fi
+    ;;
+esac
 
-# Separate into logical components for further validation
-case $1 in
-	*-*-*-*-*)
-		echo Invalid configuration \`"$1"\': more than four components >&2
-		exit 1
+### Let's recognize common machines as not being operating systems so
+### that things like config.sub decstation-3100 work.  We also
+### recognize some manufacturers as not being operating systems, so we
+### can provide default operating systems below.
+case $os in
+	-sun*os*)
+		# Prevent following clause from handling this invalid input.
 		;;
-	*-*-*-*)
-		basic_machine=$field1-$field2
-		basic_os=$field3-$field4
+	-dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \
+	-att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \
+	-unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \
+	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
+	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
+	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
+	-apple | -axis | -knuth | -cray | -microblaze*)
+		os=
+		basic_machine=$1
 		;;
-	*-*-*)
-		# Ambiguous whether COMPANY is present, or skipped and KERNEL-OS is two
-		# parts
-		maybe_os=$field2-$field3
-		case $maybe_os in
-			nto-qnx* | linux-* | uclinux-uclibc* \
-			| uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* \
-			| netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \
-			| storm-chaos* | os2-emx* | rtmk-nova*)
-				basic_machine=$field1
-				basic_os=$maybe_os
-				;;
-			android-linux)
-				basic_machine=$field1-unknown
-				basic_os=linux-android
-				;;
-			*)
-				basic_machine=$field1-$field2
-				basic_os=$field3
-				;;
-		esac
+	-bluegene*)
+		os=-cnk
 		;;
-	*-*)
-		# A lone config we happen to match not fitting any pattern
-		case $field1-$field2 in
-			decstation-3100)
-				basic_machine=mips-dec
-				basic_os=
-				;;
-			*-*)
-				# Second component is usually, but not always the OS
-				case $field2 in
-					# Prevent following clause from handling this valid os
-					sun*os*)
-						basic_machine=$field1
-						basic_os=$field2
-						;;
-					zephyr*)
-						basic_machine=$field1-unknown
-						basic_os=$field2
-						;;
-					# Manufacturers
-					dec* | mips* | sequent* | encore* | pc533* | sgi* | sony* \
-					| att* | 7300* | 3300* | delta* | motorola* | sun[234]* \
-					| unicom* | ibm* | next | hp | isi* | apollo | altos* \
-					| convergent* | ncr* | news | 32* | 3600* | 3100* \
-					| hitachi* | c[123]* | convex* | sun | crds | omron* | dg \
-					| ultra | tti* | harris | dolphin | highlevel | gould \
-					| cbm | ns | masscomp | apple | axis | knuth | cray \
-					| microblaze* | sim | cisco \
-					| oki | wec | wrs | winbond)
-						basic_machine=$field1-$field2
-						basic_os=
-						;;
-					*)
-						basic_machine=$field1
-						basic_os=$field2
-						;;
-				esac
-			;;
-		esac
+	-sim | -cisco | -oki | -wec | -winbond)
+		os=
+		basic_machine=$1
 		;;
-	*)
-		# Convert single-component short-hands not valid as part of
-		# multi-component configurations.
-		case $field1 in
-			386bsd)
-				basic_machine=i386-pc
-				basic_os=bsd
-				;;
-			a29khif)
-				basic_machine=a29k-amd
-				basic_os=udi
-				;;
-			adobe68k)
-				basic_machine=m68010-adobe
-				basic_os=scout
-				;;
-			alliant)
-				basic_machine=fx80-alliant
-				basic_os=
-				;;
-			altos | altos3068)
-				basic_machine=m68k-altos
-				basic_os=
-				;;
-			am29k)
-				basic_machine=a29k-none
-				basic_os=bsd
-				;;
-			amdahl)
-				basic_machine=580-amdahl
-				basic_os=sysv
-				;;
-			amiga)
-				basic_machine=m68k-unknown
-				basic_os=
-				;;
-			amigaos | amigados)
-				basic_machine=m68k-unknown
-				basic_os=amigaos
-				;;
-			amigaunix | amix)
-				basic_machine=m68k-unknown
-				basic_os=sysv4
-				;;
-			apollo68)
-				basic_machine=m68k-apollo
-				basic_os=sysv
-				;;
-			apollo68bsd)
-				basic_machine=m68k-apollo
-				basic_os=bsd
-				;;
-			aros)
-				basic_machine=i386-pc
-				basic_os=aros
-				;;
-			aux)
-				basic_machine=m68k-apple
-				basic_os=aux
-				;;
-			balance)
-				basic_machine=ns32k-sequent
-				basic_os=dynix
-				;;
-			blackfin)
-				basic_machine=bfin-unknown
-				basic_os=linux
-				;;
-			cegcc)
-				basic_machine=arm-unknown
-				basic_os=cegcc
-				;;
-			convex-c1)
-				basic_machine=c1-convex
-				basic_os=bsd
-				;;
-			convex-c2)
-				basic_machine=c2-convex
-				basic_os=bsd
-				;;
-			convex-c32)
-				basic_machine=c32-convex
-				basic_os=bsd
-				;;
-			convex-c34)
-				basic_machine=c34-convex
-				basic_os=bsd
-				;;
-			convex-c38)
-				basic_machine=c38-convex
-				basic_os=bsd
-				;;
-			cray)
-				basic_machine=j90-cray
-				basic_os=unicos
-				;;
-			crds | unos)
-				basic_machine=m68k-crds
-				basic_os=
-				;;
-			da30)
-				basic_machine=m68k-da30
-				basic_os=
-				;;
-			decstation | pmax | pmin | dec3100 | decstatn)
-				basic_machine=mips-dec
-				basic_os=
-				;;
-			delta88)
-				basic_machine=m88k-motorola
-				basic_os=sysv3
-				;;
-			dicos)
-				basic_machine=i686-pc
-				basic_os=dicos
-				;;
-			djgpp)
-				basic_machine=i586-pc
-				basic_os=msdosdjgpp
-				;;
-			ebmon29k)
-				basic_machine=a29k-amd
-				basic_os=ebmon
-				;;
-			es1800 | OSE68k | ose68k | ose | OSE)
-				basic_machine=m68k-ericsson
-				basic_os=ose
-				;;
-			gmicro)
-				basic_machine=tron-gmicro
-				basic_os=sysv
-				;;
-			go32)
-				basic_machine=i386-pc
-				basic_os=go32
-				;;
-			h8300hms)
-				basic_machine=h8300-hitachi
-				basic_os=hms
-				;;
-			h8300xray)
-				basic_machine=h8300-hitachi
-				basic_os=xray
-				;;
-			h8500hms)
-				basic_machine=h8500-hitachi
-				basic_os=hms
-				;;
-			harris)
-				basic_machine=m88k-harris
-				basic_os=sysv3
-				;;
-			hp300 | hp300hpux)
-				basic_machine=m68k-hp
-				basic_os=hpux
-				;;
-			hp300bsd)
-				basic_machine=m68k-hp
-				basic_os=bsd
-				;;
-			hppaosf)
-				basic_machine=hppa1.1-hp
-				basic_os=osf
-				;;
-			hppro)
-				basic_machine=hppa1.1-hp
-				basic_os=proelf
-				;;
-			i386mach)
-				basic_machine=i386-mach
-				basic_os=mach
-				;;
-			isi68 | isi)
-				basic_machine=m68k-isi
-				basic_os=sysv
-				;;
-			m68knommu)
-				basic_machine=m68k-unknown
-				basic_os=linux
-				;;
-			magnum | m3230)
-				basic_machine=mips-mips
-				basic_os=sysv
-				;;
-			merlin)
-				basic_machine=ns32k-utek
-				basic_os=sysv
-				;;
-			mingw64)
-				basic_machine=x86_64-pc
-				basic_os=mingw64
-				;;
-			mingw32)
-				basic_machine=i686-pc
-				basic_os=mingw32
-				;;
-			mingw32ce)
-				basic_machine=arm-unknown
-				basic_os=mingw32ce
-				;;
-			monitor)
-				basic_machine=m68k-rom68k
-				basic_os=coff
-				;;
-			morphos)
-				basic_machine=powerpc-unknown
-				basic_os=morphos
-				;;
-			moxiebox)
-				basic_machine=moxie-unknown
-				basic_os=moxiebox
-				;;
-			msdos)
-				basic_machine=i386-pc
-				basic_os=msdos
-				;;
-			msys)
-				basic_machine=i686-pc
-				basic_os=msys
-				;;
-			mvs)
-				basic_machine=i370-ibm
-				basic_os=mvs
-				;;
-			nacl)
-				basic_machine=le32-unknown
-				basic_os=nacl
-				;;
-			ncr3000)
-				basic_machine=i486-ncr
-				basic_os=sysv4
-				;;
-			netbsd386)
-				basic_machine=i386-pc
-				basic_os=netbsd
-				;;
-			netwinder)
-				basic_machine=armv4l-rebel
-				basic_os=linux
-				;;
-			news | news700 | news800 | news900)
-				basic_machine=m68k-sony
-				basic_os=newsos
-				;;
-			news1000)
-				basic_machine=m68030-sony
-				basic_os=newsos
-				;;
-			necv70)
-				basic_machine=v70-nec
-				basic_os=sysv
-				;;
-			nh3000)
-				basic_machine=m68k-harris
-				basic_os=cxux
-				;;
-			nh[45]000)
-				basic_machine=m88k-harris
-				basic_os=cxux
-				;;
-			nindy960)
-				basic_machine=i960-intel
-				basic_os=nindy
-				;;
-			mon960)
-				basic_machine=i960-intel
-				basic_os=mon960
-				;;
-			nonstopux)
-				basic_machine=mips-compaq
-				basic_os=nonstopux
-				;;
-			os400)
-				basic_machine=powerpc-ibm
-				basic_os=os400
-				;;
-			OSE68000 | ose68000)
-				basic_machine=m68000-ericsson
-				basic_os=ose
-				;;
-			os68k)
-				basic_machine=m68k-none
-				basic_os=os68k
-				;;
-			paragon)
-				basic_machine=i860-intel
-				basic_os=osf
-				;;
-			parisc)
-				basic_machine=hppa-unknown
-				basic_os=linux
-				;;
-			psp)
-				basic_machine=mipsallegrexel-sony
-				basic_os=psp
-				;;
-			pw32)
-				basic_machine=i586-unknown
-				basic_os=pw32
-				;;
-			rdos | rdos64)
-				basic_machine=x86_64-pc
-				basic_os=rdos
-				;;
-			rdos32)
-				basic_machine=i386-pc
-				basic_os=rdos
-				;;
-			rom68k)
-				basic_machine=m68k-rom68k
-				basic_os=coff
-				;;
-			sa29200)
-				basic_machine=a29k-amd
-				basic_os=udi
-				;;
-			sei)
-				basic_machine=mips-sei
-				basic_os=seiux
-				;;
-			sequent)
-				basic_machine=i386-sequent
-				basic_os=
-				;;
-			sps7)
-				basic_machine=m68k-bull
-				basic_os=sysv2
-				;;
-			st2000)
-				basic_machine=m68k-tandem
-				basic_os=
-				;;
-			stratus)
-				basic_machine=i860-stratus
-				basic_os=sysv4
-				;;
-			sun2)
-				basic_machine=m68000-sun
-				basic_os=
-				;;
-			sun2os3)
-				basic_machine=m68000-sun
-				basic_os=sunos3
-				;;
-			sun2os4)
-				basic_machine=m68000-sun
-				basic_os=sunos4
-				;;
-			sun3)
-				basic_machine=m68k-sun
-				basic_os=
-				;;
-			sun3os3)
-				basic_machine=m68k-sun
-				basic_os=sunos3
-				;;
-			sun3os4)
-				basic_machine=m68k-sun
-				basic_os=sunos4
-				;;
-			sun4)
-				basic_machine=sparc-sun
-				basic_os=
-				;;
-			sun4os3)
-				basic_machine=sparc-sun
-				basic_os=sunos3
-				;;
-			sun4os4)
-				basic_machine=sparc-sun
-				basic_os=sunos4
-				;;
-			sun4sol2)
-				basic_machine=sparc-sun
-				basic_os=solaris2
-				;;
-			sun386 | sun386i | roadrunner)
-				basic_machine=i386-sun
-				basic_os=
-				;;
-			sv1)
-				basic_machine=sv1-cray
-				basic_os=unicos
-				;;
-			symmetry)
-				basic_machine=i386-sequent
-				basic_os=dynix
-				;;
-			t3e)
-				basic_machine=alphaev5-cray
-				basic_os=unicos
-				;;
-			t90)
-				basic_machine=t90-cray
-				basic_os=unicos
-				;;
-			toad1)
-				basic_machine=pdp10-xkl
-				basic_os=tops20
-				;;
-			tpf)
-				basic_machine=s390x-ibm
-				basic_os=tpf
-				;;
-			udi29k)
-				basic_machine=a29k-amd
-				basic_os=udi
-				;;
-			ultra3)
-				basic_machine=a29k-nyu
-				basic_os=sym1
-				;;
-			v810 | necv810)
-				basic_machine=v810-nec
-				basic_os=none
-				;;
-			vaxv)
-				basic_machine=vax-dec
-				basic_os=sysv
-				;;
-			vms)
-				basic_machine=vax-dec
-				basic_os=vms
-				;;
-			vsta)
-				basic_machine=i386-pc
-				basic_os=vsta
-				;;
-			vxworks960)
-				basic_machine=i960-wrs
-				basic_os=vxworks
-				;;
-			vxworks68)
-				basic_machine=m68k-wrs
-				basic_os=vxworks
-				;;
-			vxworks29k)
-				basic_machine=a29k-wrs
-				basic_os=vxworks
-				;;
-			xbox)
-				basic_machine=i686-pc
-				basic_os=mingw32
-				;;
-			ymp)
-				basic_machine=ymp-cray
-				basic_os=unicos
-				;;
-			*)
-				basic_machine=$1
-				basic_os=
-				;;
-		esac
+	-scout)
+		;;
+	-wrs)
+		os=-vxworks
+		basic_machine=$1
+		;;
+	-chorusos*)
+		os=-chorusos
+		basic_machine=$1
+		;;
+	-chorusrdb)
+		os=-chorusrdb
+		basic_machine=$1
+		;;
+	-hiux*)
+		os=-hiuxwe2
+		;;
+	-sco6)
+		os=-sco5v6
+		basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco5)
+		os=-sco3.2v5
+		basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco4)
+		os=-sco3.2v4
+		basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2.[4-9]*)
+		os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
+		basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2v[4-9]*)
+		# Don't forget version if it is 3.2v4 or newer.
+		basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco5v6*)
+		# Don't forget version if it is 3.2v4 or newer.
+		basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco*)
+		os=-sco3.2v2
+		basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'`
+		;;
+	-udk*)
+		basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'`
+		;;
+	-isc)
+		os=-isc2.2
+		basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'`
+		;;
+	-clix*)
+		basic_machine=clipper-intergraph
+		;;
+	-isc*)
+		basic_machine=`echo "$1" | sed -e 's/86-.*/86-pc/'`
+		;;
+	-lynx*178)
+		os=-lynxos178
+		;;
+	-lynx*5)
+		os=-lynxos5
+		;;
+	-lynx*)
+		os=-lynxos
+		;;
+	-ptx*)
+		basic_machine=`echo "$1" | sed -e 's/86-.*/86-sequent/'`
+		;;
+	-psos*)
+		os=-psos
+		;;
+	-mint | -mint[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
 		;;
 esac
 
-# Decode 1-component or ad-hoc basic machines
+# Decode aliases for certain CPU-COMPANY combinations.
 case $basic_machine in
-	# Here we handle the default manufacturer of certain CPU types.  It is in
-	# some cases the only manufacturer, in others, it is the most popular.
-	w89k)
-		cpu=hppa1.1
-		vendor=winbond
+	# Recognize the basic CPU types without company name.
+	# Some are omitted here because they have special meanings below.
+	1750a | 580 \
+	| a29k \
+	| aarch64 | aarch64_be \
+	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
+	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
+	| am33_2.0 \
+	| arc | arceb \
+	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
+	| avr | avr32 \
+	| ba \
+	| be32 | be64 \
+	| bfin \
+	| c4x | c8051 | clipper \
+	| d10v | d30v | dlx | dsp16xx \
+	| e2k | epiphany \
+	| fido | fr30 | frv | ft32 \
+	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+	| hexagon \
+	| i370 | i860 | i960 | ia16 | ia64 \
+	| ip2k | iq2000 \
+	| k1om \
+	| le32 | le64 \
+	| lm32 \
+	| m32c | m32r | m32rle | m68000 | m68k | m88k \
+	| maxq | mb | microblaze | microblazeel | mcore | mep | metag \
+	| mips | mipsbe | mipseb | mipsel | mipsle \
+	| mips16 \
+	| mips64 | mips64el \
+	| mips64octeon | mips64octeonel \
+	| mips64orion | mips64orionel \
+	| mips64r5900 | mips64r5900el \
+	| mips64vr | mips64vrel \
+	| mips64vr4100 | mips64vr4100el \
+	| mips64vr4300 | mips64vr4300el \
+	| mips64vr5000 | mips64vr5000el \
+	| mips64vr5900 | mips64vr5900el \
+	| mipsisa32 | mipsisa32el \
+	| mipsisa32r2 | mipsisa32r2el \
+	| mipsisa32r6 | mipsisa32r6el \
+	| mipsisa64 | mipsisa64el \
+	| mipsisa64r2 | mipsisa64r2el \
+	| mipsisa64r6 | mipsisa64r6el \
+	| mipsisa64sb1 | mipsisa64sb1el \
+	| mipsisa64sr71k | mipsisa64sr71kel \
+	| mipsr5900 | mipsr5900el \
+	| mipstx39 | mipstx39el \
+	| mn10200 | mn10300 \
+	| moxie \
+	| mt \
+	| msp430 \
+	| nds32 | nds32le | nds32be \
+	| nios | nios2 | nios2eb | nios2el \
+	| ns16k | ns32k \
+	| open8 | or1k | or1knd | or32 \
+	| pdp10 | pj | pjl \
+	| powerpc | powerpc64 | powerpc64le | powerpcle \
+	| pru \
+	| pyramid \
+	| riscv32 | riscv64 \
+	| rl78 | rx \
+	| score \
+	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[234]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
+	| sh64 | sh64le \
+	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
+	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
+	| spu \
+	| tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \
+	| ubicom32 \
+	| v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
+	| visium \
+	| wasm32 \
+	| x86 | xc16x | xstormy16 | xtensa \
+	| z8k | z80)
+		basic_machine=$basic_machine-unknown
+		;;
+	c54x)
+		basic_machine=tic54x-unknown
+		;;
+	c55x)
+		basic_machine=tic55x-unknown
+		;;
+	c6x)
+		basic_machine=tic6x-unknown
 		;;
-	op50n)
-		cpu=hppa1.1
-		vendor=oki
+	leon|leon[3-9])
+		basic_machine=sparc-$basic_machine
 		;;
-	op60c)
-		cpu=hppa1.1
-		vendor=oki
+	m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | nvptx | picochip)
+		basic_machine=$basic_machine-unknown
+		os=-none
 		;;
-	ibm*)
-		cpu=i370
-		vendor=ibm
+	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65)
 		;;
-	orion105)
-		cpu=clipper
-		vendor=highlevel
+	ms1)
+		basic_machine=mt-unknown
 		;;
-	mac | mpw | mac-mpw)
-		cpu=m68k
-		vendor=apple
+
+	strongarm | thumb | xscale)
+		basic_machine=arm-unknown
 		;;
-	pmac | pmac-mpw)
-		cpu=powerpc
-		vendor=apple
+	xgate)
+		basic_machine=$basic_machine-unknown
+		os=-none
+		;;
+	xscaleeb)
+		basic_machine=armeb-unknown
+		;;
+
+	xscaleel)
+		basic_machine=armel-unknown
 		;;
 
+	# We use `pc' rather than `unknown'
+	# because (1) that's what they normally are, and
+	# (2) the word "unknown" tends to confuse beginning users.
+	i*86 | x86_64)
+	  basic_machine=$basic_machine-pc
+	  ;;
+	# Object if more than one company name word.
+	*-*-*)
+		echo Invalid configuration \`"$1"\': machine \`"$basic_machine"\' not recognized 1>&2
+		exit 1
+		;;
+	# Recognize the basic CPU types with company name.
+	580-* \
+	| a29k-* \
+	| aarch64-* | aarch64_be-* \
+	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
+	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
+	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \
+	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
+	| avr-* | avr32-* \
+	| ba-* \
+	| be32-* | be64-* \
+	| bfin-* | bs2000-* \
+	| c[123]* | c30-* | [cjt]90-* | c4x-* \
+	| c8051-* | clipper-* | craynv-* | cydra-* \
+	| d10v-* | d30v-* | dlx-* \
+	| e2k-* | elxsi-* \
+	| f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
+	| h8300-* | h8500-* \
+	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
+	| hexagon-* \
+	| i*86-* | i860-* | i960-* | ia16-* | ia64-* \
+	| ip2k-* | iq2000-* \
+	| k1om-* \
+	| le32-* | le64-* \
+	| lm32-* \
+	| m32c-* | m32r-* | m32rle-* \
+	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
+	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* \
+	| microblaze-* | microblazeel-* \
+	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
+	| mips16-* \
+	| mips64-* | mips64el-* \
+	| mips64octeon-* | mips64octeonel-* \
+	| mips64orion-* | mips64orionel-* \
+	| mips64r5900-* | mips64r5900el-* \
+	| mips64vr-* | mips64vrel-* \
+	| mips64vr4100-* | mips64vr4100el-* \
+	| mips64vr4300-* | mips64vr4300el-* \
+	| mips64vr5000-* | mips64vr5000el-* \
+	| mips64vr5900-* | mips64vr5900el-* \
+	| mipsisa32-* | mipsisa32el-* \
+	| mipsisa32r2-* | mipsisa32r2el-* \
+	| mipsisa32r6-* | mipsisa32r6el-* \
+	| mipsisa64-* | mipsisa64el-* \
+	| mipsisa64r2-* | mipsisa64r2el-* \
+	| mipsisa64r6-* | mipsisa64r6el-* \
+	| mipsisa64sb1-* | mipsisa64sb1el-* \
+	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
+	| mipsr5900-* | mipsr5900el-* \
+	| mipstx39-* | mipstx39el-* \
+	| mmix-* \
+	| mt-* \
+	| msp430-* \
+	| nds32-* | nds32le-* | nds32be-* \
+	| nios-* | nios2-* | nios2eb-* | nios2el-* \
+	| none-* | np1-* | ns16k-* | ns32k-* \
+	| open8-* \
+	| or1k*-* \
+	| orion-* \
+	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
+	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \
+	| pru-* \
+	| pyramid-* \
+	| riscv32-* | riscv64-* \
+	| rl78-* | romp-* | rs6000-* | rx-* \
+	| sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
+	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
+	| sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
+	| sparclite-* \
+	| sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx*-* \
+	| tahoe-* \
+	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
+	| tile*-* \
+	| tron-* \
+	| ubicom32-* \
+	| v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \
+	| vax-* \
+	| visium-* \
+	| wasm32-* \
+	| we32k-* \
+	| x86-* | x86_64-* | xc16x-* | xps100-* \
+	| xstormy16-* | xtensa*-* \
+	| ymp-* \
+	| z8k-* | z80-*)
+		;;
+	# Recognize the basic CPU types without company name, with glob match.
+	xtensa*)
+		basic_machine=$basic_machine-unknown
+		;;
 	# Recognize the various machine names and aliases which stand
 	# for a CPU type and a company and sometimes even an OS.
+	386bsd)
+		basic_machine=i386-pc
+		os=-bsd
+		;;
 	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
-		cpu=m68000
-		vendor=att
+		basic_machine=m68000-att
 		;;
 	3b*)
-		cpu=we32k
-		vendor=att
+		basic_machine=we32k-att
+		;;
+	a29khif)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	abacus)
+		basic_machine=abacus-unknown
+		;;
+	adobe68k)
+		basic_machine=m68010-adobe
+		os=-scout
+		;;
+	alliant | fx80)
+		basic_machine=fx80-alliant
+		;;
+	altos | altos3068)
+		basic_machine=m68k-altos
+		;;
+	am29k)
+		basic_machine=a29k-none
+		os=-bsd
+		;;
+	amd64)
+		basic_machine=x86_64-pc
+		;;
+	amd64-*)
+		basic_machine=x86_64-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		;;
+	amdahl)
+		basic_machine=580-amdahl
+		os=-sysv
+		;;
+	amiga | amiga-*)
+		basic_machine=m68k-unknown
+		;;
+	amigaos | amigados)
+		basic_machine=m68k-unknown
+		os=-amigaos
+		;;
+	amigaunix | amix)
+		basic_machine=m68k-unknown
+		os=-sysv4
+		;;
+	apollo68)
+		basic_machine=m68k-apollo
+		os=-sysv
+		;;
+	apollo68bsd)
+		basic_machine=m68k-apollo
+		os=-bsd
+		;;
+	aros)
+		basic_machine=i386-pc
+		os=-aros
+		;;
+	asmjs)
+		basic_machine=asmjs-unknown
+		;;
+	aux)
+		basic_machine=m68k-apple
+		os=-aux
+		;;
+	balance)
+		basic_machine=ns32k-sequent
+		os=-dynix
+		;;
+	blackfin)
+		basic_machine=bfin-unknown
+		os=-linux
+		;;
+	blackfin-*)
+		basic_machine=bfin-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		os=-linux
 		;;
 	bluegene*)
-		cpu=powerpc
-		vendor=ibm
-		basic_os=cnk
+		basic_machine=powerpc-ibm
+		os=-cnk
+		;;
+	c54x-*)
+		basic_machine=tic54x-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		;;
+	c55x-*)
+		basic_machine=tic55x-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		;;
+	c6x-*)
+		basic_machine=tic6x-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		;;
+	c90)
+		basic_machine=c90-cray
+		os=-unicos
+		;;
+	cegcc)
+		basic_machine=arm-unknown
+		os=-cegcc
+		;;
+	convex-c1)
+		basic_machine=c1-convex
+		os=-bsd
+		;;
+	convex-c2)
+		basic_machine=c2-convex
+		os=-bsd
+		;;
+	convex-c32)
+		basic_machine=c32-convex
+		os=-bsd
+		;;
+	convex-c34)
+		basic_machine=c34-convex
+		os=-bsd
+		;;
+	convex-c38)
+		basic_machine=c38-convex
+		os=-bsd
+		;;
+	cray | j90)
+		basic_machine=j90-cray
+		os=-unicos
+		;;
+	craynv)
+		basic_machine=craynv-cray
+		os=-unicosmp
+		;;
+	cr16 | cr16-*)
+		basic_machine=cr16-unknown
+		os=-elf
+		;;
+	crds | unos)
+		basic_machine=m68k-crds
+		;;
+	crisv32 | crisv32-* | etraxfs*)
+		basic_machine=crisv32-axis
+		;;
+	cris | cris-* | etrax*)
+		basic_machine=cris-axis
+		;;
+	crx)
+		basic_machine=crx-unknown
+		os=-elf
+		;;
+	da30 | da30-*)
+		basic_machine=m68k-da30
+		;;
+	decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
+		basic_machine=mips-dec
 		;;
 	decsystem10* | dec10*)
-		cpu=pdp10
-		vendor=dec
-		basic_os=tops10
+		basic_machine=pdp10-dec
+		os=-tops10
 		;;
 	decsystem20* | dec20*)
-		cpu=pdp10
-		vendor=dec
-		basic_os=tops20
+		basic_machine=pdp10-dec
+		os=-tops20
 		;;
 	delta | 3300 | motorola-3300 | motorola-delta \
 	      | 3300-motorola | delta-motorola)
-		cpu=m68k
-		vendor=motorola
+		basic_machine=m68k-motorola
+		;;
+	delta88)
+		basic_machine=m88k-motorola
+		os=-sysv3
+		;;
+	dicos)
+		basic_machine=i686-pc
+		os=-dicos
+		;;
+	djgpp)
+		basic_machine=i586-pc
+		os=-msdosdjgpp
+		;;
+	dpx20 | dpx20-*)
+		basic_machine=rs6000-bull
+		os=-bosx
 		;;
 	dpx2*)
-		cpu=m68k
-		vendor=bull
-		basic_os=sysv3
+		basic_machine=m68k-bull
+		os=-sysv3
 		;;
-	encore | umax | mmax)
-		cpu=ns32k
-		vendor=encore
+	e500v[12])
+		basic_machine=powerpc-unknown
+		os=$os"spe"
+		;;
+	e500v[12]-*)
+		basic_machine=powerpc-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		os=$os"spe"
+		;;
+	ebmon29k)
+		basic_machine=a29k-amd
+		os=-ebmon
 		;;
 	elxsi)
-		cpu=elxsi
-		vendor=elxsi
-		basic_os=${basic_os:-bsd}
+		basic_machine=elxsi-elxsi
+		os=-bsd
+		;;
+	encore | umax | mmax)
+		basic_machine=ns32k-encore
+		;;
+	es1800 | OSE68k | ose68k | ose | OSE)
+		basic_machine=m68k-ericsson
+		os=-ose
 		;;
 	fx2800)
-		cpu=i860
-		vendor=alliant
+		basic_machine=i860-alliant
 		;;
 	genix)
-		cpu=ns32k
-		vendor=ns
+		basic_machine=ns32k-ns
+		;;
+	gmicro)
+		basic_machine=tron-gmicro
+		os=-sysv
+		;;
+	go32)
+		basic_machine=i386-pc
+		os=-go32
 		;;
 	h3050r* | hiux*)
-		cpu=hppa1.1
-		vendor=hitachi
-		basic_os=hiuxwe2
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	h8300hms)
+		basic_machine=h8300-hitachi
+		os=-hms
+		;;
+	h8300xray)
+		basic_machine=h8300-hitachi
+		os=-xray
+		;;
+	h8500hms)
+		basic_machine=h8500-hitachi
+		os=-hms
+		;;
+	harris)
+		basic_machine=m88k-harris
+		os=-sysv3
+		;;
+	hp300-*)
+		basic_machine=m68k-hp
+		;;
+	hp300bsd)
+		basic_machine=m68k-hp
+		os=-bsd
+		;;
+	hp300hpux)
+		basic_machine=m68k-hp
+		os=-hpux
 		;;
 	hp3k9[0-9][0-9] | hp9[0-9][0-9])
-		cpu=hppa1.0
-		vendor=hp
+		basic_machine=hppa1.0-hp
 		;;
 	hp9k2[0-9][0-9] | hp9k31[0-9])
-		cpu=m68000
-		vendor=hp
+		basic_machine=m68000-hp
 		;;
 	hp9k3[2-9][0-9])
-		cpu=m68k
-		vendor=hp
+		basic_machine=m68k-hp
 		;;
 	hp9k6[0-9][0-9] | hp6[0-9][0-9])
-		cpu=hppa1.0
-		vendor=hp
+		basic_machine=hppa1.0-hp
 		;;
 	hp9k7[0-79][0-9] | hp7[0-79][0-9])
-		cpu=hppa1.1
-		vendor=hp
+		basic_machine=hppa1.1-hp
 		;;
 	hp9k78[0-9] | hp78[0-9])
 		# FIXME: really hppa2.0-hp
-		cpu=hppa1.1
-		vendor=hp
+		basic_machine=hppa1.1-hp
 		;;
 	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
 		# FIXME: really hppa2.0-hp
-		cpu=hppa1.1
-		vendor=hp
+		basic_machine=hppa1.1-hp
 		;;
 	hp9k8[0-9][13679] | hp8[0-9][13679])
-		cpu=hppa1.1
-		vendor=hp
+		basic_machine=hppa1.1-hp
 		;;
 	hp9k8[0-9][0-9] | hp8[0-9][0-9])
-		cpu=hppa1.0
-		vendor=hp
+		basic_machine=hppa1.0-hp
+		;;
+	hppaosf)
+		basic_machine=hppa1.1-hp
+		os=-osf
+		;;
+	hppro)
+		basic_machine=hppa1.1-hp
+		os=-proelf
+		;;
+	i370-ibm* | ibm*)
+		basic_machine=i370-ibm
 		;;
 	i*86v32)
-		cpu=`echo "$1" | sed -e 's/86.*/86/'`
-		vendor=pc
-		basic_os=sysv32
+		basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'`
+		os=-sysv32
 		;;
 	i*86v4*)
-		cpu=`echo "$1" | sed -e 's/86.*/86/'`
-		vendor=pc
-		basic_os=sysv4
+		basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'`
+		os=-sysv4
 		;;
 	i*86v)
-		cpu=`echo "$1" | sed -e 's/86.*/86/'`
-		vendor=pc
-		basic_os=sysv
+		basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'`
+		os=-sysv
 		;;
 	i*86sol2)
-		cpu=`echo "$1" | sed -e 's/86.*/86/'`
-		vendor=pc
-		basic_os=solaris2
+		basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'`
+		os=-solaris2
+		;;
+	i386mach)
+		basic_machine=i386-mach
+		os=-mach
 		;;
-	j90 | j90-cray)
-		cpu=j90
-		vendor=cray
-		basic_os=${basic_os:-unicos}
+	vsta)
+		basic_machine=i386-unknown
+		os=-vsta
 		;;
 	iris | iris4d)
-		cpu=mips
-		vendor=sgi
-		case $basic_os in
-		    irix*)
+		basic_machine=mips-sgi
+		case $os in
+		    -irix*)
 			;;
 		    *)
-			basic_os=irix4
+			os=-irix4
 			;;
 		esac
 		;;
+	isi68 | isi)
+		basic_machine=m68k-isi
+		os=-sysv
+		;;
+	leon-*|leon[3-9]-*)
+		basic_machine=sparc-`echo "$basic_machine" | sed 's/-.*//'`
+		;;
+	m68knommu)
+		basic_machine=m68k-unknown
+		os=-linux
+		;;
+	m68knommu-*)
+		basic_machine=m68k-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		os=-linux
+		;;
+	magnum | m3230)
+		basic_machine=mips-mips
+		os=-sysv
+		;;
+	merlin)
+		basic_machine=ns32k-utek
+		os=-sysv
+		;;
+	microblaze*)
+		basic_machine=microblaze-xilinx
+		;;
+	mingw64)
+		basic_machine=x86_64-pc
+		os=-mingw64
+		;;
+	mingw32)
+		basic_machine=i686-pc
+		os=-mingw32
+		;;
+	mingw32ce)
+		basic_machine=arm-unknown
+		os=-mingw32ce
+		;;
 	miniframe)
-		cpu=m68000
-		vendor=convergent
+		basic_machine=m68000-convergent
+		;;
+	*mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
+	mips3*-*)
+		basic_machine=`echo "$basic_machine" | sed -e 's/mips3/mips64/'`
+		;;
+	mips3*)
+		basic_machine=`echo "$basic_machine" | sed -e 's/mips3/mips64/'`-unknown
+		;;
+	monitor)
+		basic_machine=m68k-rom68k
+		os=-coff
+		;;
+	morphos)
+		basic_machine=powerpc-unknown
+		os=-morphos
+		;;
+	moxiebox)
+		basic_machine=moxie-unknown
+		os=-moxiebox
 		;;
-	*mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
-		cpu=m68k
-		vendor=atari
-		basic_os=mint
+	msdos)
+		basic_machine=i386-pc
+		os=-msdos
+		;;
+	ms1-*)
+		basic_machine=`echo "$basic_machine" | sed -e 's/ms1-/mt-/'`
+		;;
+	msys)
+		basic_machine=i686-pc
+		os=-msys
+		;;
+	mvs)
+		basic_machine=i370-ibm
+		os=-mvs
+		;;
+	nacl)
+		basic_machine=le32-unknown
+		os=-nacl
+		;;
+	ncr3000)
+		basic_machine=i486-ncr
+		os=-sysv4
+		;;
+	netbsd386)
+		basic_machine=i386-unknown
+		os=-netbsd
+		;;
+	netwinder)
+		basic_machine=armv4l-rebel
+		os=-linux
+		;;
+	news | news700 | news800 | news900)
+		basic_machine=m68k-sony
+		os=-newsos
+		;;
+	news1000)
+		basic_machine=m68030-sony
+		os=-newsos
 		;;
 	news-3600 | risc-news)
-		cpu=mips
-		vendor=sony
-		basic_os=newsos
+		basic_machine=mips-sony
+		os=-newsos
+		;;
+	necv70)
+		basic_machine=v70-nec
+		os=-sysv
 		;;
 	next | m*-next)
-		cpu=m68k
-		vendor=next
-		case $basic_os in
-		    openstep*)
-		        ;;
-		    nextstep*)
+		basic_machine=m68k-next
+		case $os in
+		    -nextstep* )
 			;;
-		    ns2*)
-		      basic_os=nextstep2
+		    -ns2*)
+		      os=-nextstep2
 			;;
 		    *)
-		      basic_os=nextstep3
+		      os=-nextstep3
 			;;
 		esac
 		;;
+	nh3000)
+		basic_machine=m68k-harris
+		os=-cxux
+		;;
+	nh[45]000)
+		basic_machine=m88k-harris
+		os=-cxux
+		;;
+	nindy960)
+		basic_machine=i960-intel
+		os=-nindy
+		;;
+	mon960)
+		basic_machine=i960-intel
+		os=-mon960
+		;;
+	nonstopux)
+		basic_machine=mips-compaq
+		os=-nonstopux
+		;;
 	np1)
-		cpu=np1
-		vendor=gould
+		basic_machine=np1-gould
+		;;
+	neo-tandem)
+		basic_machine=neo-tandem
+		;;
+	nse-tandem)
+		basic_machine=nse-tandem
+		;;
+	nsr-tandem)
+		basic_machine=nsr-tandem
+		;;
+	nsv-tandem)
+		basic_machine=nsv-tandem
+		;;
+	nsx-tandem)
+		basic_machine=nsx-tandem
 		;;
 	op50n-* | op60c-*)
-		cpu=hppa1.1
-		vendor=oki
-		basic_os=proelf
+		basic_machine=hppa1.1-oki
+		os=-proelf
+		;;
+	openrisc | openrisc-*)
+		basic_machine=or32-unknown
+		;;
+	os400)
+		basic_machine=powerpc-ibm
+		os=-os400
+		;;
+	OSE68000 | ose68000)
+		basic_machine=m68000-ericsson
+		os=-ose
+		;;
+	os68k)
+		basic_machine=m68k-none
+		os=-os68k
 		;;
 	pa-hitachi)
-		cpu=hppa1.1
-		vendor=hitachi
-		basic_os=hiuxwe2
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	paragon)
+		basic_machine=i860-intel
+		os=-osf
+		;;
+	parisc)
+		basic_machine=hppa-unknown
+		os=-linux
+		;;
+	parisc-*)
+		basic_machine=hppa-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		os=-linux
 		;;
 	pbd)
-		cpu=sparc
-		vendor=tti
+		basic_machine=sparc-tti
 		;;
 	pbb)
-		cpu=m68k
-		vendor=tti
+		basic_machine=m68k-tti
+		;;
+	pc532 | pc532-*)
+		basic_machine=ns32k-pc532
+		;;
+	pc98)
+		basic_machine=i386-pc
 		;;
-	pc532)
-		cpu=ns32k
-		vendor=pc532
+	pc98-*)
+		basic_machine=i386-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		;;
+	pentium | p5 | k5 | k6 | nexgen | viac3)
+		basic_machine=i586-pc
+		;;
+	pentiumpro | p6 | 6x86 | athlon | athlon_*)
+		basic_machine=i686-pc
+		;;
+	pentiumii | pentium2 | pentiumiii | pentium3)
+		basic_machine=i686-pc
+		;;
+	pentium4)
+		basic_machine=i786-pc
+		;;
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+		basic_machine=i586-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		;;
+	pentiumpro-* | p6-* | 6x86-* | athlon-*)
+		basic_machine=i686-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		;;
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		basic_machine=i686-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		;;
+	pentium4-*)
+		basic_machine=i786-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	pn)
-		cpu=pn
-		vendor=gould
+		basic_machine=pn-gould
 		;;
-	power)
-		cpu=power
-		vendor=ibm
+	power)	basic_machine=power-ibm
 		;;
-	ps2)
-		cpu=i386
-		vendor=ibm
+	ppc | ppcbe)	basic_machine=powerpc-unknown
 		;;
-	rm[46]00)
-		cpu=mips
-		vendor=siemens
+	ppc-* | ppcbe-*)
+		basic_machine=powerpc-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
-	rtpc | rtpc-*)
-		cpu=romp
-		vendor=ibm
+	ppcle | powerpclittle)
+		basic_machine=powerpcle-unknown
 		;;
-	sde)
-		cpu=mipsisa32
-		vendor=sde
-		basic_os=${basic_os:-elf}
+	ppcle-* | powerpclittle-*)
+		basic_machine=powerpcle-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
-	simso-wrs)
-		cpu=sparclite
-		vendor=wrs
-		basic_os=vxworks
+	ppc64)	basic_machine=powerpc64-unknown
 		;;
-	tower | tower-32)
-		cpu=m68k
-		vendor=ncr
+	ppc64-*) basic_machine=powerpc64-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
-	vpp*|vx|vx-*)
-		cpu=f301
-		vendor=fujitsu
+	ppc64le | powerpc64little)
+		basic_machine=powerpc64le-unknown
 		;;
-	w65)
-		cpu=w65
-		vendor=wdc
+	ppc64le-* | powerpc64little-*)
+		basic_machine=powerpc64le-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
-	w89k-*)
-		cpu=hppa1.1
-		vendor=winbond
-		basic_os=proelf
+	ps2)
+		basic_machine=i386-ibm
 		;;
-	none)
-		cpu=none
-		vendor=none
+	pw32)
+		basic_machine=i586-unknown
+		os=-pw32
 		;;
-	leon|leon[3-9])
-		cpu=sparc
-		vendor=$basic_machine
+	rdos | rdos64)
+		basic_machine=x86_64-pc
+		os=-rdos
 		;;
-	leon-*|leon[3-9]-*)
-		cpu=sparc
-		vendor=`echo "$basic_machine" | sed 's/-.*//'`
+	rdos32)
+		basic_machine=i386-pc
+		os=-rdos
 		;;
-
-	*-*)
-		# shellcheck disable=SC2162
-		saved_IFS=$IFS
-		IFS="-" read cpu vendor <<EOF
-$basic_machine
-EOF
-		IFS=$saved_IFS
+	rom68k)
+		basic_machine=m68k-rom68k
+		os=-coff
 		;;
-	# We use `pc' rather than `unknown'
-	# because (1) that's what they normally are, and
-	# (2) the word "unknown" tends to confuse beginning users.
-	i*86 | x86_64)
-		cpu=$basic_machine
-		vendor=pc
+	rm[46]00)
+		basic_machine=mips-siemens
 		;;
-	# These rules are duplicated from below for sake of the special case above;
-	# i.e. things that normalized to x86 arches should also default to "pc"
-	pc98)
-		cpu=i386
-		vendor=pc
+	rtpc | rtpc-*)
+		basic_machine=romp-ibm
 		;;
-	x64 | amd64)
-		cpu=x86_64
-		vendor=pc
+	s390 | s390-*)
+		basic_machine=s390-ibm
 		;;
-	# Recognize the basic CPU types without company name.
-	*)
-		cpu=$basic_machine
-		vendor=unknown
+	s390x | s390x-*)
+		basic_machine=s390x-ibm
 		;;
-esac
-
-unset -v basic_machine
-
-# Decode basic machines in the full and proper CPU-Company form.
-case $cpu-$vendor in
-	# Here we handle the default manufacturer of certain CPU types in canonical form. It is in
-	# some cases the only manufacturer, in others, it is the most popular.
-	craynv-unknown)
-		vendor=cray
-		basic_os=${basic_os:-unicosmp}
+	sa29200)
+		basic_machine=a29k-amd
+		os=-udi
 		;;
-	c90-unknown | c90-cray)
-		vendor=cray
-		basic_os=${Basic_os:-unicos}
+	sb1)
+		basic_machine=mipsisa64sb1-unknown
 		;;
-	fx80-unknown)
-		vendor=alliant
+	sb1el)
+		basic_machine=mipsisa64sb1el-unknown
 		;;
-	romp-unknown)
-		vendor=ibm
+	sde)
+		basic_machine=mipsisa32-sde
+		os=-elf
 		;;
-	mmix-unknown)
-		vendor=knuth
+	sei)
+		basic_machine=mips-sei
+		os=-seiux
 		;;
-	microblaze-unknown | microblazeel-unknown)
-		vendor=xilinx
+	sequent)
+		basic_machine=i386-sequent
 		;;
-	rs6000-unknown)
-		vendor=ibm
+	sh5el)
+		basic_machine=sh5le-unknown
 		;;
-	vax-unknown)
-		vendor=dec
+	simso-wrs)
+		basic_machine=sparclite-wrs
+		os=-vxworks
 		;;
-	pdp11-unknown)
-		vendor=dec
+	sps7)
+		basic_machine=m68k-bull
+		os=-sysv2
 		;;
-	we32k-unknown)
-		vendor=att
+	spur)
+		basic_machine=spur-unknown
 		;;
-	cydra-unknown)
-		vendor=cydrome
+	st2000)
+		basic_machine=m68k-tandem
 		;;
-	i370-ibm*)
-		vendor=ibm
+	stratus)
+		basic_machine=i860-stratus
+		os=-sysv4
 		;;
-	orion-unknown)
-		vendor=highlevel
+	strongarm-* | thumb-*)
+		basic_machine=arm-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
-	xps-unknown | xps100-unknown)
-		cpu=xps100
-		vendor=honeywell
+	sun2)
+		basic_machine=m68000-sun
 		;;
-
-	# Here we normalize CPU types with a missing or matching vendor
-	armh-unknown | armh-alt)
-		cpu=armv7l
-		vendor=alt
-		basic_os=${basic_os:-linux-gnueabihf}
+	sun2os3)
+		basic_machine=m68000-sun
+		os=-sunos3
 		;;
-	dpx20-unknown | dpx20-bull)
-		cpu=rs6000
-		vendor=bull
-		basic_os=${basic_os:-bosx}
+	sun2os4)
+		basic_machine=m68000-sun
+		os=-sunos4
 		;;
-
-	# Here we normalize CPU types irrespective of the vendor
-	amd64-*)
-		cpu=x86_64
+	sun3os3)
+		basic_machine=m68k-sun
+		os=-sunos3
 		;;
-	blackfin-*)
-		cpu=bfin
-		basic_os=linux
+	sun3os4)
+		basic_machine=m68k-sun
+		os=-sunos4
 		;;
-	c54x-*)
-		cpu=tic54x
+	sun4os3)
+		basic_machine=sparc-sun
+		os=-sunos3
 		;;
-	c55x-*)
-		cpu=tic55x
+	sun4os4)
+		basic_machine=sparc-sun
+		os=-sunos4
 		;;
-	c6x-*)
-		cpu=tic6x
+	sun4sol2)
+		basic_machine=sparc-sun
+		os=-solaris2
 		;;
-	e500v[12]-*)
-		cpu=powerpc
-		basic_os=${basic_os}"spe"
+	sun3 | sun3-*)
+		basic_machine=m68k-sun
 		;;
-	mips3*-*)
-		cpu=mips64
+	sun4)
+		basic_machine=sparc-sun
 		;;
-	ms1-*)
-		cpu=mt
+	sun386 | sun386i | roadrunner)
+		basic_machine=i386-sun
 		;;
-	m68knommu-*)
-		cpu=m68k
-		basic_os=linux
+	sv1)
+		basic_machine=sv1-cray
+		os=-unicos
 		;;
-	m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
-		cpu=s12z
+	symmetry)
+		basic_machine=i386-sequent
+		os=-dynix
 		;;
-	openrisc-*)
-		cpu=or32
+	t3e)
+		basic_machine=alphaev5-cray
+		os=-unicos
 		;;
-	parisc-*)
-		cpu=hppa
-		basic_os=linux
+	t90)
+		basic_machine=t90-cray
+		os=-unicos
 		;;
-	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
-		cpu=i586
+	tile*)
+		basic_machine=$basic_machine-unknown
+		os=-linux-gnu
 		;;
-	pentiumpro-* | p6-* | 6x86-* | athlon-* | athalon_*-*)
-		cpu=i686
+	tx39)
+		basic_machine=mipstx39-unknown
 		;;
-	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
-		cpu=i686
+	tx39el)
+		basic_machine=mipstx39el-unknown
 		;;
-	pentium4-*)
-		cpu=i786
+	toad1)
+		basic_machine=pdp10-xkl
+		os=-tops20
 		;;
-	pc98-*)
-		cpu=i386
+	tower | tower-32)
+		basic_machine=m68k-ncr
 		;;
-	ppc-* | ppcbe-*)
-		cpu=powerpc
+	tpf)
+		basic_machine=s390x-ibm
+		os=-tpf
 		;;
-	ppcle-* | powerpclittle-*)
-		cpu=powerpcle
+	udi29k)
+		basic_machine=a29k-amd
+		os=-udi
 		;;
-	ppc64-*)
-		cpu=powerpc64
+	ultra3)
+		basic_machine=a29k-nyu
+		os=-sym1
 		;;
-	ppc64le-* | powerpc64little-*)
-		cpu=powerpc64le
+	v810 | necv810)
+		basic_machine=v810-nec
+		os=-none
 		;;
-	sb1-*)
-		cpu=mipsisa64sb1
+	vaxv)
+		basic_machine=vax-dec
+		os=-sysv
 		;;
-	sb1el-*)
-		cpu=mipsisa64sb1el
+	vms)
+		basic_machine=vax-dec
+		os=-vms
 		;;
-	sh5e[lb]-*)
-		cpu=`echo "$cpu" | sed 's/^\(sh.\)e\(.\)$/\1\2e/'`
+	vpp*|vx|vx-*)
+		basic_machine=f301-fujitsu
 		;;
-	spur-*)
-		cpu=spur
+	vxworks960)
+		basic_machine=i960-wrs
+		os=-vxworks
 		;;
-	strongarm-* | thumb-*)
-		cpu=arm
+	vxworks68)
+		basic_machine=m68k-wrs
+		os=-vxworks
+		;;
+	vxworks29k)
+		basic_machine=a29k-wrs
+		os=-vxworks
 		;;
-	tx39-*)
-		cpu=mipstx39
+	w65*)
+		basic_machine=w65-wdc
+		os=-none
+		;;
+	w89k-*)
+		basic_machine=hppa1.1-winbond
+		os=-proelf
 		;;
-	tx39el-*)
-		cpu=mipstx39el
+	x64)
+		basic_machine=x86_64-pc
 		;;
-	x64-*)
-		cpu=x86_64
+	xbox)
+		basic_machine=i686-pc
+		os=-mingw32
+		;;
+	xps | xps100)
+		basic_machine=xps100-honeywell
 		;;
 	xscale-* | xscalee[bl]-*)
-		cpu=`echo "$cpu" | sed 's/^xscale/arm/'`
+		basic_machine=`echo "$basic_machine" | sed 's/^xscale/arm/'`
+		;;
+	ymp)
+		basic_machine=ymp-cray
+		os=-unicos
 		;;
-	arm64-* | aarch64le-*)
-		cpu=aarch64
+	none)
+		basic_machine=none-none
+		os=-none
 		;;
 
-	# Recognize the canonical CPU Types that limit and/or modify the
-	# company names they are paired with.
-	cr16-*)
-		basic_os=${basic_os:-elf}
+# Here we handle the default manufacturer of certain CPU types.  It is in
+# some cases the only manufacturer, in others, it is the most popular.
+	w89k)
+		basic_machine=hppa1.1-winbond
 		;;
-	crisv32-* | etraxfs*-*)
-		cpu=crisv32
-		vendor=axis
+	op50n)
+		basic_machine=hppa1.1-oki
 		;;
-	cris-* | etrax*-*)
-		cpu=cris
-		vendor=axis
+	op60c)
+		basic_machine=hppa1.1-oki
 		;;
-	crx-*)
-		basic_os=${basic_os:-elf}
+	romp)
+		basic_machine=romp-ibm
 		;;
-	neo-tandem)
-		cpu=neo
-		vendor=tandem
+	mmix)
+		basic_machine=mmix-knuth
 		;;
-	nse-tandem)
-		cpu=nse
-		vendor=tandem
+	rs6000)
+		basic_machine=rs6000-ibm
 		;;
-	nsr-tandem)
-		cpu=nsr
-		vendor=tandem
+	vax)
+		basic_machine=vax-dec
 		;;
-	nsv-tandem)
-		cpu=nsv
-		vendor=tandem
+	pdp11)
+		basic_machine=pdp11-dec
 		;;
-	nsx-tandem)
-		cpu=nsx
-		vendor=tandem
+	we32k)
+		basic_machine=we32k-att
 		;;
-	mipsallegrexel-sony)
-		cpu=mipsallegrexel
-		vendor=sony
+	sh[1234] | sh[24]a | sh[24]aeb | sh[34]eb | sh[1234]le | sh[23]ele)
+		basic_machine=sh-unknown
 		;;
-	tile*-*)
-		basic_os=${basic_os:-linux-gnu}
+	cydra)
+		basic_machine=cydra-cydrome
+		;;
+	orion)
+		basic_machine=orion-highlevel
+		;;
+	orion105)
+		basic_machine=clipper-highlevel
+		;;
+	mac | mpw | mac-mpw)
+		basic_machine=m68k-apple
+		;;
+	pmac | pmac-mpw)
+		basic_machine=powerpc-apple
+		;;
+	*-unknown)
+		# Make sure to match an already-canonicalized machine name.
 		;;
-
 	*)
-		# Recognize the canonical CPU types that are allowed with any
-		# company name.
-		case $cpu in
-			1750a | 580 \
-			| a29k \
-			| aarch64 | aarch64_be \
-			| abacus \
-			| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] \
-			| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] \
-			| alphapca5[67] | alpha64pca5[67] \
-			| am33_2.0 \
-			| amdgcn \
-			| arc | arceb | arc32 | arc64 \
-			| arm | arm[lb]e | arme[lb] | armv* \
-			| avr | avr32 \
-			| asmjs \
-			| ba \
-			| be32 | be64 \
-			| bfin | bpf | bs2000 \
-			| c[123]* | c30 | [cjt]90 | c4x \
-			| c8051 | clipper | craynv | csky | cydra \
-			| d10v | d30v | dlx | dsp16xx \
-			| e2k | elxsi | epiphany \
-			| f30[01] | f700 | fido | fr30 | frv | ft32 | fx80 \
-			| h8300 | h8500 \
-			| hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
-			| hexagon \
-			| i370 | i*86 | i860 | i960 | ia16 | ia64 \
-			| ip2k | iq2000 \
-			| k1om \
-			| le32 | le64 \
-			| lm32 \
-			| loongarch32 | loongarch64 | loongarchx32 \
-			| m32c | m32r | m32rle \
-			| m5200 | m68000 | m680[012346]0 | m68360 | m683?2 | m68k \
-			| m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x \
-			| m88110 | m88k | maxq | mb | mcore | mep | metag \
-			| microblaze | microblazeel \
-			| mips | mipsbe | mipseb | mipsel | mipsle \
-			| mips16 \
-			| mips64 | mips64eb | mips64el \
-			| mips64octeon | mips64octeonel \
-			| mips64orion | mips64orionel \
-			| mips64r5900 | mips64r5900el \
-			| mips64vr | mips64vrel \
-			| mips64vr4100 | mips64vr4100el \
-			| mips64vr4300 | mips64vr4300el \
-			| mips64vr5000 | mips64vr5000el \
-			| mips64vr5900 | mips64vr5900el \
-			| mipsisa32 | mipsisa32el \
-			| mipsisa32r2 | mipsisa32r2el \
-			| mipsisa32r3 | mipsisa32r3el \
-			| mipsisa32r5 | mipsisa32r5el \
-			| mipsisa32r6 | mipsisa32r6el \
-			| mipsisa64 | mipsisa64el \
-			| mipsisa64r2 | mipsisa64r2el \
-			| mipsisa64r3 | mipsisa64r3el \
-			| mipsisa64r5 | mipsisa64r5el \
-			| mipsisa64r6 | mipsisa64r6el \
-			| mipsisa64sb1 | mipsisa64sb1el \
-			| mipsisa64sr71k | mipsisa64sr71kel \
-			| mipsr5900 | mipsr5900el \
-			| mipstx39 | mipstx39el \
-			| mmix \
-			| mn10200 | mn10300 \
-			| moxie \
-			| mt \
-			| msp430 \
-			| nds32 | nds32le | nds32be \
-			| nfp \
-			| nios | nios2 | nios2eb | nios2el \
-			| none | np1 | ns16k | ns32k | nvptx \
-			| open8 \
-			| or1k* \
-			| or32 \
-			| orion \
-			| picochip \
-			| pdp10 | pdp11 | pj | pjl | pn | power \
-			| powerpc | powerpc64 | powerpc64le | powerpcle | powerpcspe \
-			| pru \
-			| pyramid \
-			| riscv | riscv32 | riscv32be | riscv64 | riscv64be \
-			| rl78 | romp | rs6000 | rx \
-			| s390 | s390x \
-			| score \
-			| sh | shl \
-			| sh[1234] | sh[24]a | sh[24]ae[lb] | sh[23]e | she[lb] | sh[lb]e \
-			| sh[1234]e[lb] |  sh[12345][lb]e | sh[23]ele | sh64 | sh64le \
-			| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet \
-			| sparclite \
-			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
-			| spu \
-			| tahoe \
-			| thumbv7* \
-			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
-			| tron \
-			| ubicom32 \
-			| v70 | v850 | v850e | v850e1 | v850es | v850e2 | v850e2v3 \
-			| vax \
-			| visium \
-			| w65 \
-			| wasm32 | wasm64 \
-			| we32k \
-			| x86 | x86_64 | xc16x | xgate | xps100 \
-			| xstormy16 | xtensa* \
-			| ymp \
-			| z8k | z80)
-				;;
-
-			*)
-				echo Invalid configuration \`"$1"\': machine \`"$cpu-$vendor"\' not recognized 1>&2
-				exit 1
-				;;
-		esac
+		echo Invalid configuration \`"$1"\': machine \`"$basic_machine"\' not recognized 1>&2
+		exit 1
 		;;
 esac
 
 # Here we canonicalize certain aliases for manufacturers.
-case $vendor in
-	digital*)
-		vendor=dec
+case $basic_machine in
+	*-digital*)
+		basic_machine=`echo "$basic_machine" | sed 's/digital.*/dec/'`
 		;;
-	commodore*)
-		vendor=cbm
+	*-commodore*)
+		basic_machine=`echo "$basic_machine" | sed 's/commodore.*/cbm/'`
 		;;
 	*)
 		;;
@@ -1306,215 +1334,203 @@ esac
 
 # Decode manufacturer-specific aliases for certain operating systems.
 
-if test x$basic_os != x
+if [ x"$os" != x"" ]
 then
-
-# First recognize some ad-hoc cases, or perhaps split kernel-os, or else just
-# set os.
-case $basic_os in
-	gnu/linux*)
-		kernel=linux
-		os=`echo "$basic_os" | sed -e 's|gnu/linux|gnu|'`
-		;;
-	os2-emx)
-		kernel=os2
-		os=`echo "$basic_os" | sed -e 's|os2-emx|emx|'`
-		;;
-	nto-qnx*)
-		kernel=nto
-		os=`echo "$basic_os" | sed -e 's|nto-qnx|qnx|'`
-		;;
-	*-*)
-		# shellcheck disable=SC2162
-		saved_IFS=$IFS
-		IFS="-" read kernel os <<EOF
-$basic_os
-EOF
-		IFS=$saved_IFS
-		;;
-	# Default OS when just kernel was specified
-	nto*)
-		kernel=nto
-		os=`echo "$basic_os" | sed -e 's|nto|qnx|'`
-		;;
-	linux*)
-		kernel=linux
-		os=`echo "$basic_os" | sed -e 's|linux|gnu|'`
-		;;
-	*)
-		kernel=
-		os=$basic_os
-		;;
-esac
-
-# Now, normalize the OS (knowing we just have one component, it's not a kernel,
-# etc.)
 case $os in
 	# First match some system type aliases that might get confused
 	# with valid system types.
-	# solaris* is a basic system type, with this one exception.
-	auroraux)
-		os=auroraux
+	# -solaris* is a basic system type, with this one exception.
+	-auroraux)
+		os=-auroraux
 		;;
-	bluegene*)
-		os=cnk
+	-solaris1 | -solaris1.*)
+		os=`echo $os | sed -e 's|solaris1|sunos4|'`
 		;;
-	solaris1 | solaris1.*)
-		os=`echo "$os" | sed -e 's|solaris1|sunos4|'`
+	-solaris)
+		os=-solaris2
 		;;
-	solaris)
-		os=solaris2
+	-unixware*)
+		os=-sysv4.2uw
 		;;
-	unixware*)
-		os=sysv4.2uw
+	-gnu/linux*)
+		os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
 		;;
 	# es1800 is here to avoid being matched by es* (a different OS)
-	es1800*)
-		os=ose
-		;;
-	# Some version numbers need modification
-	chorusos*)
-		os=chorusos
-		;;
-	isc)
-		os=isc2.2
-		;;
-	sco6)
-		os=sco5v6
-		;;
-	sco5)
-		os=sco3.2v5
-		;;
-	sco4)
-		os=sco3.2v4
-		;;
-	sco3.2.[4-9]*)
-		os=`echo "$os" | sed -e 's/sco3.2./sco3.2v/'`
+	-es1800*)
+		os=-ose
 		;;
-	sco*v* | scout)
-		# Don't match below
+	# Now accept the basic system types.
+	# The portable systems comes first.
+	# Each alternative MUST end in a * to match a version number.
+	# -sysv* is not here because it comes later, after sysvr4.
+	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
+	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\
+	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \
+	      | -sym* | -kopensolaris* | -plan9* \
+	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
+	      | -aos* | -aros* | -cloudabi* | -sortix* \
+	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
+	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
+	      | -hiux* | -knetbsd* | -mirbsd* | -netbsd* \
+	      | -bitrig* | -openbsd* | -solidbsd* | -libertybsd* \
+	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
+	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
+	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
+	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
+	      | -chorusos* | -chorusrdb* | -cegcc* | -glidix* \
+	      | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+	      | -midipix* | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \
+	      | -linux-newlib* | -linux-musl* | -linux-uclibc* \
+	      | -uxpv* | -beos* | -mpeix* | -udk* | -moxiebox* \
+	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* \
+	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
+	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
+	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
+	      | -morphos* | -superux* | -rtmk* | -windiss* \
+	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
+	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* \
+	      | -onefs* | -tirtos* | -phoenix* | -fuchsia* | -redox* | -bme* \
+	      | -midnightbsd*)
+	# Remember, each alternative MUST END IN *, to match a version number.
+		;;
+	-qnx*)
+		case $basic_machine in
+		    x86-* | i*86-*)
+			;;
+		    *)
+			os=-nto$os
+			;;
+		esac
 		;;
-	sco*)
-		os=sco3.2v2
+	-nto-qnx*)
 		;;
-	psos*)
-		os=psos
+	-nto*)
+		os=`echo $os | sed -e 's|nto|nto-qnx|'`
 		;;
-	qnx*)
-		os=qnx
+	-sim | -xray | -os68k* | -v88r* \
+	      | -windows* | -osx | -abug | -netware* | -os9* \
+	      | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
 		;;
-	hiux*)
-		os=hiuxwe2
+	-mac*)
+		os=`echo "$os" | sed -e 's|mac|macos|'`
 		;;
-	lynx*178)
-		os=lynxos178
+	-linux-dietlibc)
+		os=-linux-dietlibc
 		;;
-	lynx*5)
-		os=lynxos5
+	-linux*)
+		os=`echo $os | sed -e 's|linux|linux-gnu|'`
 		;;
-	lynxos*)
-		# don't get caught up in next wildcard
+	-sunos5*)
+		os=`echo "$os" | sed -e 's|sunos5|solaris2|'`
 		;;
-	lynx*)
-		os=lynxos
+	-sunos6*)
+		os=`echo "$os" | sed -e 's|sunos6|solaris3|'`
 		;;
-	mac[0-9]*)
-		os=`echo "$os" | sed -e 's|mac|macos|'`
+	-opened*)
+		os=-openedition
 		;;
-	opened*)
-		os=openedition
+	-os400*)
+		os=-os400
 		;;
-	os400*)
-		os=os400
+	-wince*)
+		os=-wince
 		;;
-	sunos5*)
-		os=`echo "$os" | sed -e 's|sunos5|solaris2|'`
+	-utek*)
+		os=-bsd
 		;;
-	sunos6*)
-		os=`echo "$os" | sed -e 's|sunos6|solaris3|'`
+	-dynix*)
+		os=-bsd
 		;;
-	wince*)
-		os=wince
+	-acis*)
+		os=-aos
 		;;
-	utek*)
-		os=bsd
+	-atheos*)
+		os=-atheos
 		;;
-	dynix*)
-		os=bsd
+	-syllable*)
+		os=-syllable
 		;;
-	acis*)
-		os=aos
+	-386bsd)
+		os=-bsd
 		;;
-	atheos*)
-		os=atheos
+	-ctix* | -uts*)
+		os=-sysv
 		;;
-	syllable*)
-		os=syllable
+	-nova*)
+		os=-rtmk-nova
 		;;
-	386bsd)
-		os=bsd
+	-ns2)
+		os=-nextstep2
 		;;
-	ctix* | uts*)
-		os=sysv
+	-nsk*)
+		os=-nsk
 		;;
-	nova*)
-		os=rtmk-nova
+	# Preserve the version number of sinix5.
+	-sinix5.*)
+		os=`echo $os | sed -e 's|sinix|sysv|'`
 		;;
-	ns2)
-		os=nextstep2
+	-sinix*)
+		os=-sysv4
 		;;
-	# Preserve the version number of sinix5.
-	sinix5.*)
-		os=`echo "$os" | sed -e 's|sinix|sysv|'`
+	-tpf*)
+		os=-tpf
 		;;
-	sinix*)
-		os=sysv4
+	-triton*)
+		os=-sysv3
 		;;
-	tpf*)
-		os=tpf
+	-oss*)
+		os=-sysv3
 		;;
-	triton*)
-		os=sysv3
+	-svr4*)
+		os=-sysv4
 		;;
-	oss*)
-		os=sysv3
+	-svr3)
+		os=-sysv3
 		;;
-	svr4*)
-		os=sysv4
+	-sysvr4)
+		os=-sysv4
 		;;
-	svr3)
-		os=sysv3
+	# This must come after -sysvr4.
+	-sysv*)
 		;;
-	sysvr4)
-		os=sysv4
+	-ose*)
+		os=-ose
 		;;
-	ose*)
-		os=ose
+	-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+		os=-mint
 		;;
-	*mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
-		os=mint
+	-zvmoe)
+		os=-zvmoe
 		;;
-	dicos*)
-		os=dicos
+	-dicos*)
+		os=-dicos
 		;;
-	pikeos*)
+	-pikeos*)
 		# Until real need of OS specific support for
 		# particular features comes up, bare metal
 		# configurations are quite functional.
-		case $cpu in
+		case $basic_machine in
 		    arm*)
-			os=eabi
+			os=-eabi
 			;;
 		    *)
-			os=elf
+			os=-elf
 			;;
 		esac
 		;;
+	-nacl*)
+		;;
+	-ios)
+		;;
+	-none)
+		;;
 	*)
-		# No normalization, but not necessarily accepted, that comes below.
+		# Get rid of the `-' at the beginning of $os.
+		os=`echo $os | sed 's/[^-]*-//'`
+		echo Invalid configuration \`"$1"\': system \`"$os"\' not recognized 1>&2
+		exit 1
 		;;
 esac
-
 else
 
 # Here we handle the default operating systems that come with various machines.
@@ -1527,363 +1543,258 @@ else
 # will signal an error saying that MANUFACTURER isn't an operating
 # system, and we'll never get to this point.
 
-kernel=
-case $cpu-$vendor in
+case $basic_machine in
 	score-*)
-		os=elf
+		os=-elf
 		;;
 	spu-*)
-		os=elf
+		os=-elf
 		;;
 	*-acorn)
-		os=riscix1.2
+		os=-riscix1.2
 		;;
 	arm*-rebel)
-		kernel=linux
-		os=gnu
+		os=-linux
 		;;
 	arm*-semi)
-		os=aout
+		os=-aout
 		;;
 	c4x-* | tic4x-*)
-		os=coff
+		os=-coff
 		;;
 	c8051-*)
-		os=elf
-		;;
-	clipper-intergraph)
-		os=clix
+		os=-elf
 		;;
 	hexagon-*)
-		os=elf
+		os=-elf
 		;;
 	tic54x-*)
-		os=coff
+		os=-coff
 		;;
 	tic55x-*)
-		os=coff
+		os=-coff
 		;;
 	tic6x-*)
-		os=coff
+		os=-coff
 		;;
 	# This must come before the *-dec entry.
 	pdp10-*)
-		os=tops20
+		os=-tops20
 		;;
 	pdp11-*)
-		os=none
+		os=-none
 		;;
 	*-dec | vax-*)
-		os=ultrix4.2
+		os=-ultrix4.2
 		;;
 	m68*-apollo)
-		os=domain
+		os=-domain
 		;;
 	i386-sun)
-		os=sunos4.0.2
+		os=-sunos4.0.2
 		;;
 	m68000-sun)
-		os=sunos3
+		os=-sunos3
 		;;
 	m68*-cisco)
-		os=aout
+		os=-aout
 		;;
 	mep-*)
-		os=elf
+		os=-elf
 		;;
 	mips*-cisco)
-		os=elf
+		os=-elf
 		;;
 	mips*-*)
-		os=elf
+		os=-elf
 		;;
 	or32-*)
-		os=coff
+		os=-coff
 		;;
 	*-tti)	# must be before sparc entry or we get the wrong os.
-		os=sysv3
+		os=-sysv3
 		;;
 	sparc-* | *-sun)
-		os=sunos4.1.1
+		os=-sunos4.1.1
 		;;
 	pru-*)
-		os=elf
+		os=-elf
 		;;
 	*-be)
-		os=beos
+		os=-beos
 		;;
 	*-ibm)
-		os=aix
+		os=-aix
 		;;
 	*-knuth)
-		os=mmixware
+		os=-mmixware
 		;;
 	*-wec)
-		os=proelf
+		os=-proelf
 		;;
 	*-winbond)
-		os=proelf
+		os=-proelf
 		;;
 	*-oki)
-		os=proelf
+		os=-proelf
 		;;
 	*-hp)
-		os=hpux
+		os=-hpux
 		;;
 	*-hitachi)
-		os=hiux
+		os=-hiux
 		;;
 	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
-		os=sysv
+		os=-sysv
 		;;
 	*-cbm)
-		os=amigaos
+		os=-amigaos
 		;;
 	*-dg)
-		os=dgux
+		os=-dgux
 		;;
 	*-dolphin)
-		os=sysv3
+		os=-sysv3
 		;;
 	m68k-ccur)
-		os=rtu
+		os=-rtu
 		;;
 	m88k-omron*)
-		os=luna
+		os=-luna
 		;;
 	*-next)
-		os=nextstep
+		os=-nextstep
 		;;
 	*-sequent)
-		os=ptx
+		os=-ptx
 		;;
 	*-crds)
-		os=unos
+		os=-unos
 		;;
 	*-ns)
-		os=genix
+		os=-genix
 		;;
 	i370-*)
-		os=mvs
+		os=-mvs
 		;;
 	*-gould)
-		os=sysv
+		os=-sysv
 		;;
 	*-highlevel)
-		os=bsd
+		os=-bsd
 		;;
 	*-encore)
-		os=bsd
+		os=-bsd
 		;;
 	*-sgi)
-		os=irix
+		os=-irix
 		;;
 	*-siemens)
-		os=sysv4
+		os=-sysv4
 		;;
 	*-masscomp)
-		os=rtu
+		os=-rtu
 		;;
 	f30[01]-fujitsu | f700-fujitsu)
-		os=uxpv
+		os=-uxpv
 		;;
 	*-rom68k)
-		os=coff
+		os=-coff
 		;;
 	*-*bug)
-		os=coff
+		os=-coff
 		;;
 	*-apple)
-		os=macos
+		os=-macos
 		;;
 	*-atari*)
-		os=mint
-		;;
-	*-wrs)
-		os=vxworks
+		os=-mint
 		;;
 	*)
-		os=none
+		os=-none
 		;;
 esac
-
 fi
 
-# Now, validate our (potentially fixed-up) OS.
-case $os in
-	# Sometimes we do "kernel-libc", so those need to count as OSes.
-	musl* | newlib* | relibc* | uclibc*)
-		;;
-	# Likewise for "kernel-abi"
-	eabi* | gnueabi*)
-		;;
-	# VxWorks passes extra cpu info in the 4th filed.
-	simlinux | simwindows | spe)
-		;;
-	# Now accept the basic system types.
-	# The portable systems comes first.
-	# Each alternative MUST end in a * to match a version number.
-	gnu* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
-	     | *vms* | esix* | aix* | cnk* | sunos | sunos[34]* \
-	     | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
-	     | sym* |  plan9* | psp* | sim* | xray* | os68k* | v88r* \
-	     | hiux* | abug | nacl* | netware* | windows* \
-	     | os9* | macos* | osx* | ios* \
-	     | mpw* | magic* | mmixware* | mon960* | lnews* \
-	     | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \
-	     | aos* | aros* | cloudabi* | sortix* | twizzler* \
-	     | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
-	     | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
-	     | mirbsd* | netbsd* | dicos* | openedition* | ose* \
-	     | bitrig* | openbsd* | secbsd* | solidbsd* | libertybsd* | os108* \
-	     | ekkobsd* | freebsd* | riscix* | lynxos* | os400* \
-	     | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \
-	     | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \
-	     | udi* | lites* | ieee* | go32* | aux* | hcos* \
-	     | chorusrdb* | cegcc* | glidix* | serenity* \
-	     | cygwin* | msys* | pe* | moss* | proelf* | rtems* \
-	     | midipix* | mingw32* | mingw64* | mint* \
-	     | uxpv* | beos* | mpeix* | udk* | moxiebox* \
-	     | interix* | uwin* | mks* | rhapsody* | darwin* \
-	     | openstep* | oskit* | conix* | pw32* | nonstopux* \
-	     | storm-chaos* | tops10* | tenex* | tops20* | its* \
-	     | os2* | vos* | palmos* | uclinux* | nucleus* | morphos* \
-	     | scout* | superux* | sysv* | rtmk* | tpf* | windiss* \
-	     | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \
-	     | skyos* | haiku* | rdos* | toppers* | drops* | es* \
-	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
-	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
-	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | zephyr* \
-	     | fiwix* )
-		;;
-	# This one is extra strict with allowed versions
-	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
-		# Don't forget version if it is 3.2v4 or newer.
-		;;
-	none)
-		;;
-	*)
-		echo Invalid configuration \`"$1"\': OS \`"$os"\' not recognized 1>&2
-		exit 1
-		;;
-esac
-
-# As a final step for OS-related things, validate the OS-kernel combination
-# (given a valid OS), if there is a kernel.
-case $kernel-$os in
-	linux-gnu* | linux-dietlibc* | linux-android* | linux-newlib* \
-		   | linux-musl* | linux-relibc* | linux-uclibc* )
-		;;
-	uclinux-uclibc* )
-		;;
-	-dietlibc* | -newlib* | -musl* | -relibc* | -uclibc* )
-		# These are just libc implementations, not actual OSes, and thus
-		# require a kernel.
-		echo "Invalid configuration \`$1': libc \`$os' needs explicit kernel." 1>&2
-		exit 1
-		;;
-	kfreebsd*-gnu* | kopensolaris*-gnu*)
-		;;
-	vxworks-simlinux | vxworks-simwindows | vxworks-spe)
-		;;
-	nto-qnx*)
-		;;
-	os2-emx)
-		;;
-	*-eabi* | *-gnueabi*)
-		;;
-	-*)
-		# Blank kernel with real OS is always fine.
-		;;
-	*-*)
-		echo "Invalid configuration \`$1': Kernel \`$kernel' not known to work with OS \`$os'." 1>&2
-		exit 1
-		;;
-esac
-
 # Here we handle the case where we know the os, and the CPU type, but not the
 # manufacturer.  We pick the logical manufacturer.
-case $vendor in
-	unknown)
-		case $cpu-$os in
-			*-riscix*)
+vendor=unknown
+case $basic_machine in
+	*-unknown)
+		case $os in
+			-riscix*)
 				vendor=acorn
 				;;
-			*-sunos*)
+			-sunos*)
 				vendor=sun
 				;;
-			*-cnk* | *-aix*)
+			-cnk*|-aix*)
 				vendor=ibm
 				;;
-			*-beos*)
+			-beos*)
 				vendor=be
 				;;
-			*-hpux*)
+			-hpux*)
 				vendor=hp
 				;;
-			*-mpeix*)
+			-mpeix*)
 				vendor=hp
 				;;
-			*-hiux*)
+			-hiux*)
 				vendor=hitachi
 				;;
-			*-unos*)
+			-unos*)
 				vendor=crds
 				;;
-			*-dgux*)
+			-dgux*)
 				vendor=dg
 				;;
-			*-luna*)
+			-luna*)
 				vendor=omron
 				;;
-			*-genix*)
+			-genix*)
 				vendor=ns
 				;;
-			*-clix*)
-				vendor=intergraph
-				;;
-			*-mvs* | *-opened*)
-				vendor=ibm
-				;;
-			*-os400*)
+			-mvs* | -opened*)
 				vendor=ibm
 				;;
-			s390-* | s390x-*)
+			-os400*)
 				vendor=ibm
 				;;
-			*-ptx*)
+			-ptx*)
 				vendor=sequent
 				;;
-			*-tpf*)
+			-tpf*)
 				vendor=ibm
 				;;
-			*-vxsim* | *-vxworks* | *-windiss*)
+			-vxsim* | -vxworks* | -windiss*)
 				vendor=wrs
 				;;
-			*-aux*)
+			-aux*)
 				vendor=apple
 				;;
-			*-hms*)
+			-hms*)
 				vendor=hitachi
 				;;
-			*-mpw* | *-macos*)
+			-mpw* | -macos*)
 				vendor=apple
 				;;
-			*-*mint | *-mint[0-9]* | *-*MiNT | *-MiNT[0-9]*)
+			-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
 				vendor=atari
 				;;
-			*-vos*)
+			-vos*)
 				vendor=stratus
 				;;
 		esac
+		basic_machine=`echo "$basic_machine" | sed "s/unknown/$vendor/"`
 		;;
 esac
 
-echo "$cpu-$vendor-${kernel:+$kernel-}$os"
+echo "$basic_machine$os"
 exit
 
 # Local variables:
-# eval: (add-hook 'before-save-hook 'time-stamp)
+# eval: (add-hook 'write-file-functions 'time-stamp)
 # time-stamp-start: "timestamp='"
 # time-stamp-format: "%:y-%02m-%02d"
 # time-stamp-end: "'"
diff --git a/build-aux/depcomp b/build-aux/depcomp
index 715e343..65cbf70 100755
--- a/build-aux/depcomp
+++ b/build-aux/depcomp
@@ -3,7 +3,7 @@
 
 scriptversion=2018-03-07.03; # UTC
 
-# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+# Copyright (C) 1999-2018 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/install-sh b/build-aux/install-sh
index ec298b5..8175c64 100755
--- a/build-aux/install-sh
+++ b/build-aux/install-sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # install - install a program, script, or datafile
 
-scriptversion=2020-11-14.01; # UTC
+scriptversion=2018-03-11.20; # UTC
 
 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -69,11 +69,6 @@ posix_mkdir=
 # Desired mode of installed file.
 mode=0755
 
-# Create dirs (including intermediate dirs) using mode 755.
-# This is like GNU 'install' as of coreutils 8.32 (2020).
-mkdir_umask=22
-
-backupsuffix=
 chgrpcmd=
 chmodcmd=$chmodprog
 chowncmd=
@@ -104,28 +99,18 @@ Options:
      --version  display version info and exit.
 
   -c            (ignored)
-  -C            install only if different (preserve data modification time)
+  -C            install only if different (preserve the last data modification time)
   -d            create directories instead of installing files.
   -g GROUP      $chgrpprog installed files to GROUP.
   -m MODE       $chmodprog installed files to MODE.
   -o USER       $chownprog installed files to USER.
-  -p            pass -p to $cpprog.
   -s            $stripprog installed files.
-  -S SUFFIX     attempt to back up existing files, with suffix SUFFIX.
   -t DIRECTORY  install into DIRECTORY.
   -T            report an error if DSTFILE is a directory.
 
 Environment variables override the default commands:
   CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
   RMPROG STRIPPROG
-
-By default, rm is invoked with -f; when overridden with RMPROG,
-it's up to you to specify -f if you want it.
-
-If -S is not specified, no backups are attempted.
-
-Email bug reports to bug-automake@gnu.org.
-Automake home page: https://www.gnu.org/software/automake/
 "
 
 while test $# -ne 0; do
@@ -152,13 +137,8 @@ while test $# -ne 0; do
     -o) chowncmd="$chownprog $2"
         shift;;
 
-    -p) cpprog="$cpprog -p";;
-
     -s) stripcmd=$stripprog;;
 
-    -S) backupsuffix="$2"
-        shift;;
-
     -t)
         is_target_a_directory=always
         dst_arg=$2
@@ -275,10 +255,6 @@ do
     dstdir=$dst
     test -d "$dstdir"
     dstdir_status=$?
-    # Don't chown directories that already exist.
-    if test $dstdir_status = 0; then
-      chowncmd=""
-    fi
   else
 
     # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
@@ -325,6 +301,22 @@ do
   if test $dstdir_status != 0; then
     case $posix_mkdir in
       '')
+        # Create intermediate dirs using mode 755 as modified by the umask.
+        # This is like FreeBSD 'install' as of 1997-10-28.
+        umask=`umask`
+        case $stripcmd.$umask in
+          # Optimize common cases.
+          *[2367][2367]) mkdir_umask=$umask;;
+          .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
+
+          *[0-7])
+            mkdir_umask=`expr $umask + 22 \
+              - $umask % 100 % 40 + $umask % 20 \
+              - $umask % 10 % 4 + $umask % 2
+            `;;
+          *) mkdir_umask=$umask,go-w;;
+        esac
+
         # With -d, create the new directory with the user-specified mode.
         # Otherwise, rely on $mkdir_umask.
         if test -n "$dir_arg"; then
@@ -334,49 +326,52 @@ do
         fi
 
         posix_mkdir=false
-	# The $RANDOM variable is not portable (e.g., dash).  Use it
-	# here however when possible just to lower collision chance.
-	tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
-
-	trap '
-	  ret=$?
-	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null
-	  exit $ret
-	' 0
-
-	# Because "mkdir -p" follows existing symlinks and we likely work
-	# directly in world-writeable /tmp, make sure that the '$tmpdir'
-	# directory is successfully created first before we actually test
-	# 'mkdir -p'.
-	if (umask $mkdir_umask &&
-	    $mkdirprog $mkdir_mode "$tmpdir" &&
-	    exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
-	then
-	  if test -z "$dir_arg" || {
-	       # Check for POSIX incompatibilities with -m.
-	       # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
-	       # other-writable bit of parent directory when it shouldn't.
-	       # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
-	       test_tmpdir="$tmpdir/a"
-	       ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
-	       case $ls_ld_tmpdir in
-		 d????-?r-*) different_mode=700;;
-		 d????-?--*) different_mode=755;;
-		 *) false;;
-	       esac &&
-	       $mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
-		 ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
-		 test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
-	       }
-	     }
-	  then posix_mkdir=:
-	  fi
-	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
-	else
-	  # Remove any dirs left behind by ancient mkdir implementations.
-	  rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
-	fi
-	trap '' 0;;
+        case $umask in
+          *[123567][0-7][0-7])
+            # POSIX mkdir -p sets u+wx bits regardless of umask, which
+            # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
+            ;;
+          *)
+            # Note that $RANDOM variable is not portable (e.g. dash);  Use it
+            # here however when possible just to lower collision chance.
+            tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+
+            trap 'ret=$?; rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null; exit $ret' 0
+
+            # Because "mkdir -p" follows existing symlinks and we likely work
+            # directly in world-writeable /tmp, make sure that the '$tmpdir'
+            # directory is successfully created first before we actually test
+            # 'mkdir -p' feature.
+            if (umask $mkdir_umask &&
+                $mkdirprog $mkdir_mode "$tmpdir" &&
+                exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
+            then
+              if test -z "$dir_arg" || {
+                   # Check for POSIX incompatibilities with -m.
+                   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+                   # other-writable bit of parent directory when it shouldn't.
+                   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+                   test_tmpdir="$tmpdir/a"
+                   ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
+                   case $ls_ld_tmpdir in
+                     d????-?r-*) different_mode=700;;
+                     d????-?--*) different_mode=755;;
+                     *) false;;
+                   esac &&
+                   $mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
+                     ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
+                     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+                   }
+                 }
+              then posix_mkdir=:
+              fi
+              rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
+            else
+              # Remove any dirs left behind by ancient mkdir implementations.
+              rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
+            fi
+            trap '' 0;;
+        esac;;
     esac
 
     if
@@ -387,7 +382,7 @@ do
     then :
     else
 
-      # mkdir does not conform to POSIX,
+      # The umask is ridiculous, or mkdir does not conform to POSIX,
       # or it failed possibly due to a race condition.  Create the
       # directory the slow way, step by step, checking for races as we go.
 
@@ -416,7 +411,7 @@ do
           prefixes=
         else
           if $posix_mkdir; then
-            (umask $mkdir_umask &&
+            (umask=$mkdir_umask &&
              $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
             # Don't fail if two instances are running concurrently.
             test -d "$prefix" || exit 1
@@ -456,18 +451,7 @@ do
     trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
 
     # Copy the file name to the temp name.
-    (umask $cp_umask &&
-     { test -z "$stripcmd" || {
-	 # Create $dsttmp read-write so that cp doesn't create it read-only,
-	 # which would cause strip to fail.
-	 if test -z "$doit"; then
-	   : >"$dsttmp" # No need to fork-exec 'touch'.
-	 else
-	   $doit touch "$dsttmp"
-	 fi
-       }
-     } &&
-     $doit_exec $cpprog "$src" "$dsttmp") &&
+    (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
 
     # and set any options; do chmod last to preserve setuid bits.
     #
@@ -493,13 +477,6 @@ do
     then
       rm -f "$dsttmp"
     else
-      # If $backupsuffix is set, and the file being installed
-      # already exists, attempt a backup.  Don't worry if it fails,
-      # e.g., if mv doesn't support -f.
-      if test -n "$backupsuffix" && test -f "$dst"; then
-        $doit $mvcmd -f "$dst" "$dst$backupsuffix" 2>/dev/null
-      fi
-
       # Rename the file to the real destination.
       $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
 
@@ -514,9 +491,9 @@ do
         # file should still install successfully.
         {
           test ! -f "$dst" ||
-          $doit $rmcmd "$dst" 2>/dev/null ||
+          $doit $rmcmd -f "$dst" 2>/dev/null ||
           { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
-            { $doit $rmcmd "$rmtmp" 2>/dev/null; :; }
+            { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
           } ||
           { echo "$0: cannot unlink or rename $dst" >&2
             (exit 1); exit 1
diff --git a/build-aux/ltmain.sh b/build-aux/ltmain.sh
old mode 100755
new mode 100644
index 1dea62a..0cb7f90
--- a/build-aux/ltmain.sh
+++ b/build-aux/ltmain.sh
@@ -1,12 +1,12 @@
-#! /usr/bin/env sh
+#! /bin/sh
 ## DO NOT EDIT - This file generated from ./build-aux/ltmain.in
-##               by inline-source v2019-02-19.15
+##               by inline-source v2014-01-03.01
 
-# libtool (GNU libtool) 2.4.7
+# libtool (GNU libtool) 2.4.6
 # Provide generalized library-building support services.
 # Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
 
-# Copyright (C) 1996-2019, 2021-2022 Free Software Foundation, Inc.
+# Copyright (C) 1996-2015 Free Software Foundation, Inc.
 # This is free software; see the source for copying conditions.  There is NO
 # warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
@@ -31,8 +31,8 @@
 
 PROGRAM=libtool
 PACKAGE=libtool
-VERSION="2.4.7 Debian-2.4.7-7"
-package_revision=2.4.7
+VERSION="2.4.6 Debian-2.4.6-14"
+package_revision=2.4.6
 
 
 ## ------ ##
@@ -64,25 +64,34 @@ package_revision=2.4.7
 # libraries, which are installed to $pkgauxdir.
 
 # Set a version string for this script.
-scriptversion=2019-02-19.15; # UTC
+scriptversion=2015-01-20.17; # UTC
 
 # General shell script boiler plate, and helper functions.
 # Written by Gary V. Vaughan, 2004
 
-# This is free software.  There is NO warranty; not even for
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-#
-# Copyright (C) 2004-2019, 2021 Bootstrap Authors
-#
-# This file is dual licensed under the terms of the MIT license
-# <https://opensource.org/license/MIT>, and GPL version 2 or later
-# <http://www.gnu.org/licenses/gpl-2.0.html>.  You must apply one of
-# these licenses when using or redistributing this software or any of
-# the files within it.  See the URLs above, or the file `LICENSE`
-# included in the Bootstrap distribution for the full license texts.
+# Copyright (C) 2004-2015 Free Software Foundation, Inc.
+# This is free software; see the source for copying conditions.  There is NO
+# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+
+# As a special exception to the GNU General Public License, if you distribute
+# this file as part of a program or library that is built using GNU Libtool,
+# you may include this file under the same distribution terms that you use
+# for the rest of that program.
 
-# Please report bugs or propose patches to:
-# <https://github.com/gnulib-modules/bootstrap/issues>
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNES FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# Please report bugs or propose patches to gary@gnu.org.
 
 
 ## ------ ##
@@ -130,12 +139,9 @@ do
 	  _G_safe_locale=\"$_G_var=C; \$_G_safe_locale\"
 	fi"
 done
-# These NLS vars are set unconditionally (bootstrap issue #24).  Unset those
-# in case the environment reset is needed later and the $save_* variant is not
-# defined (see the code above).
-LC_ALL=C
-LANGUAGE=C
-export LANGUAGE LC_ALL
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
 
 # Make sure IFS has a sensible default
 sp=' '
@@ -153,26 +159,6 @@ if test "${PATH_SEPARATOR+set}" != set; then
 fi
 
 
-# func_unset VAR
-# --------------
-# Portably unset VAR.
-# In some shells, an 'unset VAR' statement leaves a non-zero return
-# status if VAR is already unset, which might be problematic if the
-# statement is used at the end of a function (thus poisoning its return
-# value) or when 'set -e' is active (causing even a spurious abort of
-# the script in this case).
-func_unset ()
-{
-    { eval $1=; (eval unset $1) >/dev/null 2>&1 && eval unset $1 || : ; }
-}
-
-
-# Make sure CDPATH doesn't cause `cd` commands to output the target dir.
-func_unset CDPATH
-
-# Make sure ${,E,F}GREP behave sanely.
-func_unset GREP_OPTIONS
-
 
 ## ------------------------- ##
 ## Locate command utilities. ##
@@ -273,7 +259,7 @@ test -z "$SED" && {
     rm -f conftest.in conftest.tmp conftest.nl conftest.out
   }
 
-  func_path_progs "sed gsed" func_check_prog_sed "$PATH:/usr/xpg4/bin"
+  func_path_progs "sed gsed" func_check_prog_sed $PATH:/usr/xpg4/bin
   rm -f conftest.sed
   SED=$func_path_progs_result
 }
@@ -309,7 +295,7 @@ test -z "$GREP" && {
     rm -f conftest.in conftest.tmp conftest.nl conftest.out
   }
 
-  func_path_progs "grep ggrep" func_check_prog_grep "$PATH:/usr/xpg4/bin"
+  func_path_progs "grep ggrep" func_check_prog_grep $PATH:/usr/xpg4/bin
   GREP=$func_path_progs_result
 }
 
@@ -374,35 +360,6 @@ sed_double_backslash="\
   s/\\([^$_G_bs]\\)$_G_bs2$_G_dollar/\\1$_G_bs2$_G_bs$_G_dollar/g
   s/\n//g"
 
-# require_check_ifs_backslash
-# ---------------------------
-# Check if we can use backslash as IFS='\' separator, and set
-# $check_ifs_backshlash_broken to ':' or 'false'.
-require_check_ifs_backslash=func_require_check_ifs_backslash
-func_require_check_ifs_backslash ()
-{
-  _G_save_IFS=$IFS
-  IFS='\'
-  _G_check_ifs_backshlash='a\\b'
-  for _G_i in $_G_check_ifs_backshlash
-  do
-  case $_G_i in
-  a)
-    check_ifs_backshlash_broken=false
-    ;;
-  '')
-    break
-    ;;
-  *)
-    check_ifs_backshlash_broken=:
-    break
-    ;;
-  esac
-  done
-  IFS=$_G_save_IFS
-  require_check_ifs_backslash=:
-}
-
 
 ## ----------------- ##
 ## Global variables. ##
@@ -572,15 +529,27 @@ func_require_term_colors ()
 # ---------------------
 # Append VALUE onto the existing contents of VAR.
 
+  # We should try to minimise forks, especially on Windows where they are
+  # unreasonably slow, so skip the feature probes when bash or zsh are
+  # being used:
+  if test set = "${BASH_VERSION+set}${ZSH_VERSION+set}"; then
+    : ${_G_HAVE_ARITH_OP="yes"}
+    : ${_G_HAVE_XSI_OPS="yes"}
+    # The += operator was introduced in bash 3.1
+    case $BASH_VERSION in
+      [12].* | 3.0 | 3.0*) ;;
+      *)
+        : ${_G_HAVE_PLUSEQ_OP="yes"}
+        ;;
+    esac
+  fi
+
   # _G_HAVE_PLUSEQ_OP
   # Can be empty, in which case the shell is probed, "yes" if += is
   # useable or anything else if it does not work.
-  if test -z "$_G_HAVE_PLUSEQ_OP" &&  \
-      __PLUSEQ_TEST="a" &&  \
-      __PLUSEQ_TEST+=" b" 2>/dev/null &&  \
-      test "a b" = "$__PLUSEQ_TEST"; then
-    _G_HAVE_PLUSEQ_OP=yes
-  fi
+  test -z "$_G_HAVE_PLUSEQ_OP" \
+    && (eval 'x=a; x+=" b"; test "a b" = "$x"') 2>/dev/null \
+    && _G_HAVE_PLUSEQ_OP=yes
 
 if test yes = "$_G_HAVE_PLUSEQ_OP"
 then
@@ -611,16 +580,16 @@ if test yes = "$_G_HAVE_PLUSEQ_OP"; then
   {
     $debug_cmd
 
-    func_quote_arg pretty "$2"
-    eval "$1+=\\ \$func_quote_arg_result"
+    func_quote_for_eval "$2"
+    eval "$1+=\\ \$func_quote_for_eval_result"
   }'
 else
   func_append_quoted ()
   {
     $debug_cmd
 
-    func_quote_arg pretty "$2"
-    eval "$1=\$$1\\ \$func_quote_arg_result"
+    func_quote_for_eval "$2"
+    eval "$1=\$$1\\ \$func_quote_for_eval_result"
   }
 fi
 
@@ -1122,203 +1091,85 @@ func_relative_path ()
 }
 
 
-# func_quote_portable EVAL ARG
-# ----------------------------
-# Internal function to portably implement func_quote_arg.  Note that we still
-# keep attention to performance here so we as much as possible try to avoid
-# calling sed binary (so far O(N) complexity as long as func_append is O(1)).
-func_quote_portable ()
+# func_quote_for_eval ARG...
+# --------------------------
+# Aesthetically quote ARGs to be evaled later.
+# This function returns two values:
+#   i) func_quote_for_eval_result
+#      double-quoted, suitable for a subsequent eval
+#  ii) func_quote_for_eval_unquoted_result
+#      has all characters that are still active within double
+#      quotes backslashified.
+func_quote_for_eval ()
 {
     $debug_cmd
 
-    $require_check_ifs_backslash
-
-    func_quote_portable_result=$2
-
-    # one-time-loop (easy break)
-    while true
-    do
-      if $1; then
-        func_quote_portable_result=`$ECHO "$2" | $SED \
-          -e "$sed_double_quote_subst" -e "$sed_double_backslash"`
-        break
-      fi
-
-      # Quote for eval.
-      case $func_quote_portable_result in
+    func_quote_for_eval_unquoted_result=
+    func_quote_for_eval_result=
+    while test 0 -lt $#; do
+      case $1 in
         *[\\\`\"\$]*)
-          # Fallback to sed for $func_check_bs_ifs_broken=:, or when the string
-          # contains the shell wildcard characters.
-          case $check_ifs_backshlash_broken$func_quote_portable_result in
-            :*|*[\[\*\?]*)
-              func_quote_portable_result=`$ECHO "$func_quote_portable_result" \
-                  | $SED "$sed_quote_subst"`
-              break
-              ;;
-          esac
+	  _G_unquoted_arg=`printf '%s\n' "$1" |$SED "$sed_quote_subst"` ;;
+        *)
+          _G_unquoted_arg=$1 ;;
+      esac
+      if test -n "$func_quote_for_eval_unquoted_result"; then
+	func_append func_quote_for_eval_unquoted_result " $_G_unquoted_arg"
+      else
+        func_append func_quote_for_eval_unquoted_result "$_G_unquoted_arg"
+      fi
 
-          func_quote_portable_old_IFS=$IFS
-          for _G_char in '\' '`' '"' '$'
-          do
-            # STATE($1) PREV($2) SEPARATOR($3)
-            set start "" ""
-            func_quote_portable_result=dummy"$_G_char$func_quote_portable_result$_G_char"dummy
-            IFS=$_G_char
-            for _G_part in $func_quote_portable_result
-            do
-              case $1 in
-              quote)
-                func_append func_quote_portable_result "$3$2"
-                set quote "$_G_part" "\\$_G_char"
-                ;;
-              start)
-                set first "" ""
-                func_quote_portable_result=
-                ;;
-              first)
-                set quote "$_G_part" ""
-                ;;
-              esac
-            done
-          done
-          IFS=$func_quote_portable_old_IFS
+      case $_G_unquoted_arg in
+        # Double-quote args containing shell metacharacters to delay
+        # word splitting, command substitution and variable expansion
+        # for a subsequent eval.
+        # Many Bourne shells cannot handle close brackets correctly
+        # in scan sets, so we specify it separately.
+        *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
+          _G_quoted_arg=\"$_G_unquoted_arg\"
           ;;
-        *) ;;
+        *)
+          _G_quoted_arg=$_G_unquoted_arg
+	  ;;
       esac
-      break
-    done
 
-    func_quote_portable_unquoted_result=$func_quote_portable_result
-    case $func_quote_portable_result in
-      # double-quote args containing shell metacharacters to delay
-      # word splitting, command substitution and variable expansion
-      # for a subsequent eval.
-      # many bourne shells cannot handle close brackets correctly
-      # in scan sets, so we specify it separately.
-      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
-        func_quote_portable_result=\"$func_quote_portable_result\"
-        ;;
-    esac
+      if test -n "$func_quote_for_eval_result"; then
+	func_append func_quote_for_eval_result " $_G_quoted_arg"
+      else
+        func_append func_quote_for_eval_result "$_G_quoted_arg"
+      fi
+      shift
+    done
 }
 
 
-# func_quotefast_eval ARG
-# -----------------------
-# Quote one ARG (internal).  This is equivalent to 'func_quote_arg eval ARG',
-# but optimized for speed.  Result is stored in $func_quotefast_eval.
-if test xyes = `(x=; printf -v x %q yes; echo x"$x") 2>/dev/null`; then
-  printf -v _GL_test_printf_tilde %q '~'
-  if test '\~' = "$_GL_test_printf_tilde"; then
-    func_quotefast_eval ()
-    {
-      printf -v func_quotefast_eval_result %q "$1"
-    }
-  else
-    # Broken older Bash implementations.  Make those faster too if possible.
-    func_quotefast_eval ()
-    {
-      case $1 in
-        '~'*)
-          func_quote_portable false "$1"
-          func_quotefast_eval_result=$func_quote_portable_result
-          ;;
-        *)
-          printf -v func_quotefast_eval_result %q "$1"
-          ;;
-      esac
-    }
-  fi
-else
-  func_quotefast_eval ()
-  {
-    func_quote_portable false "$1"
-    func_quotefast_eval_result=$func_quote_portable_result
-  }
-fi
-
+# func_quote_for_expand ARG
+# -------------------------
+# Aesthetically quote ARG to be evaled later; same as above,
+# but do not quote variable references.
+func_quote_for_expand ()
+{
+    $debug_cmd
 
-# func_quote_arg MODEs ARG
-# ------------------------
-# Quote one ARG to be evaled later.  MODEs argument may contain zero or more
-# specifiers listed below separated by ',' character.  This function returns two
-# values:
-#   i) func_quote_arg_result
-#      double-quoted (when needed), suitable for a subsequent eval
-#  ii) func_quote_arg_unquoted_result
-#      has all characters that are still active within double
-#      quotes backslashified.  Available only if 'unquoted' is specified.
-#
-# Available modes:
-# ----------------
-# 'eval' (default)
-#       - escape shell special characters
-# 'expand'
-#       - the same as 'eval';  but do not quote variable references
-# 'pretty'
-#       - request aesthetic output, i.e. '"a b"' instead of 'a\ b'.  This might
-#         be used later in func_quote to get output like: 'echo "a b"' instead
-#         of 'echo a\ b'.  This is slower than default on some shells.
-# 'unquoted'
-#       - produce also $func_quote_arg_unquoted_result which does not contain
-#         wrapping double-quotes.
-#
-# Examples for 'func_quote_arg pretty,unquoted string':
-#
-#   string      | *_result              | *_unquoted_result
-#   ------------+-----------------------+-------------------
-#   "           | \"                    | \"
-#   a b         | "a b"                 | a b
-#   "a b"       | "\"a b\""             | \"a b\"
-#   *           | "*"                   | *
-#   z="${x-$y}" | "z=\"\${x-\$y}\""     | z=\"\${x-\$y}\"
-#
-# Examples for 'func_quote_arg pretty,unquoted,expand string':
-#
-#   string        |   *_result          |  *_unquoted_result
-#   --------------+---------------------+--------------------
-#   z="${x-$y}"   | "z=\"${x-$y}\""     | z=\"${x-$y}\"
-func_quote_arg ()
-{
-    _G_quote_expand=false
-    case ,$1, in
-      *,expand,*)
-        _G_quote_expand=:
-        ;;
+    case $1 in
+      *[\\\`\"]*)
+	_G_arg=`$ECHO "$1" | $SED \
+	    -e "$sed_double_quote_subst" -e "$sed_double_backslash"` ;;
+      *)
+        _G_arg=$1 ;;
     esac
 
-    case ,$1, in
-      *,pretty,*|*,expand,*|*,unquoted,*)
-        func_quote_portable $_G_quote_expand "$2"
-        func_quote_arg_result=$func_quote_portable_result
-        func_quote_arg_unquoted_result=$func_quote_portable_unquoted_result
-        ;;
-      *)
-        # Faster quote-for-eval for some shells.
-        func_quotefast_eval "$2"
-        func_quote_arg_result=$func_quotefast_eval_result
+    case $_G_arg in
+      # Double-quote args containing shell metacharacters to delay
+      # word splitting and command substitution for a subsequent eval.
+      # Many Bourne shells cannot handle close brackets correctly
+      # in scan sets, so we specify it separately.
+      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
+        _G_arg=\"$_G_arg\"
         ;;
     esac
-}
-
 
-# func_quote MODEs ARGs...
-# ------------------------
-# Quote all ARGs to be evaled later and join them into single command.  See
-# func_quote_arg's description for more info.
-func_quote ()
-{
-    $debug_cmd
-    _G_func_quote_mode=$1 ; shift
-    func_quote_result=
-    while test 0 -lt $#; do
-      func_quote_arg "$_G_func_quote_mode" "$1"
-      if test -n "$func_quote_result"; then
-        func_append func_quote_result " $func_quote_arg_result"
-      else
-        func_append func_quote_result "$func_quote_arg_result"
-      fi
-      shift
-    done
+    func_quote_for_expand_result=$_G_arg
 }
 
 
@@ -1364,8 +1215,8 @@ func_show_eval ()
     _G_cmd=$1
     _G_fail_exp=${2-':'}
 
-    func_quote_arg pretty,expand "$_G_cmd"
-    eval "func_notquiet $func_quote_arg_result"
+    func_quote_for_expand "$_G_cmd"
+    eval "func_notquiet $func_quote_for_expand_result"
 
     $opt_dry_run || {
       eval "$_G_cmd"
@@ -1390,8 +1241,8 @@ func_show_eval_locale ()
     _G_fail_exp=${2-':'}
 
     $opt_quiet || {
-      func_quote_arg expand,pretty "$_G_cmd"
-      eval "func_echo $func_quote_arg_result"
+      func_quote_for_expand "$_G_cmd"
+      eval "func_echo $func_quote_for_expand_result"
     }
 
     $opt_dry_run || {
@@ -1518,26 +1369,30 @@ func_lt_ver ()
 # End:
 #! /bin/sh
 
+# Set a version string for this script.
+scriptversion=2015-10-07.11; # UTC
+
 # A portable, pluggable option parser for Bourne shell.
 # Written by Gary V. Vaughan, 2010
 
-# This is free software.  There is NO warranty; not even for
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-#
-# Copyright (C) 2010-2019, 2021 Bootstrap Authors
-#
-# This file is dual licensed under the terms of the MIT license
-# <https://opensource.org/license/MIT>, and GPL version 2 or later
-# <http://www.gnu.org/licenses/gpl-2.0.html>.  You must apply one of
-# these licenses when using or redistributing this software or any of
-# the files within it.  See the URLs above, or the file `LICENSE`
-# included in the Bootstrap distribution for the full license texts.
+# Copyright (C) 2010-2015 Free Software Foundation, Inc.
+# This is free software; see the source for copying conditions.  There is NO
+# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
-# Please report bugs or propose patches to:
-# <https://github.com/gnulib-modules/bootstrap/issues>
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
 
-# Set a version string for this script.
-scriptversion=2019-02-19.15; # UTC
+# This program 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 General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Please report bugs or propose patches to gary@gnu.org.
 
 
 ## ------ ##
@@ -1560,7 +1415,7 @@ scriptversion=2019-02-19.15; # UTC
 #
 # In order for the '--version' option to work, you will need to have a
 # suitably formatted comment like the one at the top of this file
-# starting with '# Written by ' and ending with '# Copyright'.
+# starting with '# Written by ' and ending with '# warranty; '.
 #
 # For '-h' and '--help' to work, you will also need a one line
 # description of your script's purpose in a comment directly above the
@@ -1572,7 +1427,7 @@ scriptversion=2019-02-19.15; # UTC
 # to display verbose messages only when your user has specified
 # '--verbose'.
 #
-# After sourcing this file, you can plug in processing for additional
+# After sourcing this file, you can plug processing for additional
 # options by amending the variables from the 'Configuration' section
 # below, and following the instructions in the 'Option parsing'
 # section further down.
@@ -1621,8 +1476,8 @@ fatal_help="Try '\$progname --help' for more information."
 ## ------------------------- ##
 
 # This section contains functions for adding, removing, and running hooks
-# in the main code.  A hook is just a list of function names that can be
-# run in order later on.
+# to the main code.  A hook is just a named list of of function, that can
+# be run in order later on.
 
 # func_hookable FUNC_NAME
 # -----------------------
@@ -1655,8 +1510,7 @@ func_add_hook ()
 
 # func_remove_hook FUNC_NAME HOOK_FUNC
 # ------------------------------------
-# Remove HOOK_FUNC from the list of hook functions to be called by
-# FUNC_NAME.
+# Remove HOOK_FUNC from the list of functions called by FUNC_NAME.
 func_remove_hook ()
 {
     $debug_cmd
@@ -1665,28 +1519,10 @@ func_remove_hook ()
 }
 
 
-# func_propagate_result FUNC_NAME_A FUNC_NAME_B
-# ---------------------------------------------
-# If the *_result variable of FUNC_NAME_A _is set_, assign its value to
-# *_result variable of FUNC_NAME_B.
-func_propagate_result ()
-{
-    $debug_cmd
-
-    func_propagate_result_result=:
-    if eval "test \"\${${1}_result+set}\" = set"
-    then
-      eval "${2}_result=\$${1}_result"
-    else
-      func_propagate_result_result=false
-    fi
-}
-
-
 # func_run_hooks FUNC_NAME [ARG]...
 # ---------------------------------
 # Run all hook functions registered to FUNC_NAME.
-# It's assumed that the list of hook functions contains nothing more
+# It is assumed that the list of hook functions contains nothing more
 # than a whitespace-delimited list of legal shell function names, and
 # no effort is wasted trying to catch shell meta-characters or preserve
 # whitespace.
@@ -1698,19 +1534,22 @@ func_run_hooks ()
 
     case " $hookable_fns " in
       *" $1 "*) ;;
-      *) func_fatal_error "'$1' does not support hook functions." ;;
+      *) func_fatal_error "'$1' does not support hook funcions.n" ;;
     esac
 
     eval _G_hook_fns=\$$1_hooks; shift
 
     for _G_hook in $_G_hook_fns; do
-      func_unset "${_G_hook}_result"
-      eval $_G_hook '${1+"$@"}'
-      func_propagate_result $_G_hook func_run_hooks
-      if $func_propagate_result_result; then
-        eval set dummy "$func_run_hooks_result"; shift
+      if eval $_G_hook '"$@"'; then
+        # store returned options list back into positional
+        # parameters for next 'cmd' execution.
+        eval _G_hook_result=\$${_G_hook}_result
+        eval set dummy "$_G_hook_result"; shift
+        _G_rc_run_hooks=:
       fi
     done
+
+    $_G_rc_run_hooks && func_run_hooks_result=$_G_hook_result
 }
 
 
@@ -1720,16 +1559,14 @@ func_run_hooks ()
 ## --------------- ##
 
 # In order to add your own option parsing hooks, you must accept the
-# full positional parameter list from your hook function.  You may remove
-# or edit any options that you action, and then pass back the remaining
-# unprocessed options in '<hooked_function_name>_result', escaped
-# suitably for 'eval'.
-#
-# The '<hooked_function_name>_result' variable is automatically unset
-# before your hook gets called; for best performance, only set the
-# *_result variable when necessary (i.e. don't call the 'func_quote'
-# function unnecessarily because it can be an expensive operation on some
-# machines).
+# full positional parameter list in your hook function, you may remove/edit
+# any options that you action, and then pass back the remaining unprocessed
+# options in '<hooked_function_name>_result', escaped suitably for
+# 'eval'.  In this case you also must return $EXIT_SUCCESS to let the
+# hook's caller know that it should pay attention to
+# '<hooked_function_name>_result'.  Returning $EXIT_FAILURE signalizes that
+# arguments are left untouched by the hook and therefore caller will ignore the
+# result variable.
 #
 # Like this:
 #
@@ -1741,8 +1578,11 @@ func_run_hooks ()
 #        usage_message=$usage_message'
 #      -s, --silent       don'\''t print informational messages
 #    '
-#        # No change in '$@' (ignored completely by this hook).  Leave
-#        # my_options_prep_result variable intact.
+#        # No change in '$@' (ignored completely by this hook).  There is
+#        # no need to do the equivalent (but slower) action:
+#        # func_quote_for_eval ${1+"$@"}
+#        # my_options_prep_result=$func_quote_for_eval_result
+#        false
 #    }
 #    func_add_hook func_options_prep my_options_prep
 #
@@ -1753,7 +1593,7 @@ func_run_hooks ()
 #
 #        args_changed=false
 #
-#        # Note that, for efficiency, we parse as many options as we can
+#        # Note that for efficiency, we parse as many options as we can
 #        # recognise in a loop before passing the remainder back to the
 #        # caller on the first unrecognised argument we encounter.
 #        while test $# -gt 0; do
@@ -1770,17 +1610,18 @@ func_run_hooks ()
 #                         args_changed=:
 #                         ;;
 #            *)           # Make sure the first unrecognised option "$_G_opt"
-#                         # is added back to "$@" in case we need it later,
-#                         # if $args_changed was set to 'true'.
+#                         # is added back to "$@", we could need that later
+#                         # if $args_changed is true.
 #                         set dummy "$_G_opt" ${1+"$@"}; shift; break ;;
 #          esac
 #        done
 #
-#        # Only call 'func_quote' here if we processed at least one argument.
 #        if $args_changed; then
-#          func_quote eval ${1+"$@"}
-#          my_silent_option_result=$func_quote_result
+#          func_quote_for_eval ${1+"$@"}
+#          my_silent_option_result=$func_quote_for_eval_result
 #        fi
+#
+#        $args_changed
 #    }
 #    func_add_hook func_parse_options my_silent_option
 #
@@ -1791,6 +1632,8 @@ func_run_hooks ()
 #
 #        $opt_silent && $opt_verbose && func_fatal_help "\
 #    '--silent' and '--verbose' options are mutually exclusive."
+#
+#        false
 #    }
 #    func_add_hook func_validate_options my_option_validation
 #
@@ -1806,8 +1649,13 @@ func_options_finish ()
 {
     $debug_cmd
 
-    func_run_hooks func_options ${1+"$@"}
-    func_propagate_result func_run_hooks func_options_finish
+    _G_func_options_finish_exit=false
+    if func_run_hooks func_options ${1+"$@"}; then
+      func_options_finish_result=$func_run_hooks_result
+      _G_func_options_finish_exit=:
+    fi
+
+    $_G_func_options_finish_exit
 }
 
 
@@ -1820,27 +1668,28 @@ func_options ()
 {
     $debug_cmd
 
-    _G_options_quoted=false
+    _G_rc_options=false
 
     for my_func in options_prep parse_options validate_options options_finish
     do
-      func_unset func_${my_func}_result
-      func_unset func_run_hooks_result
-      eval func_$my_func '${1+"$@"}'
-      func_propagate_result func_$my_func func_options
-      if $func_propagate_result_result; then
-        eval set dummy "$func_options_result"; shift
-        _G_options_quoted=:
+      if eval func_$my_func '${1+"$@"}'; then
+        eval _G_res_var='$'"func_${my_func}_result"
+        eval set dummy "$_G_res_var" ; shift
+        _G_rc_options=:
       fi
     done
 
-    $_G_options_quoted || {
-      # As we (func_options) are top-level options-parser function and
-      # nobody quoted "$@" for us yet, we need to do it explicitly for
-      # caller.
-      func_quote eval ${1+"$@"}
-      func_options_result=$func_quote_result
-    }
+    # Save modified positional parameters for caller.  As a top-level
+    # options-parser function we always need to set the 'func_options_result'
+    # variable (regardless the $_G_rc_options value).
+    if $_G_rc_options; then
+      func_options_result=$_G_res_var
+    else
+      func_quote_for_eval ${1+"$@"}
+      func_options_result=$func_quote_for_eval_result
+    fi
+
+    $_G_rc_options
 }
 
 
@@ -1850,7 +1699,8 @@ func_options ()
 # Note that when calling hook functions, we pass through the list of
 # positional parameters.  If a hook function modifies that list, and
 # needs to propagate that back to rest of this script, then the complete
-# modified list must be put in 'func_run_hooks_result' before returning.
+# modified list must be put in 'func_run_hooks_result' before
+# returning $EXIT_SUCCESS (otherwise $EXIT_FAILURE is returned).
 func_hookable func_options_prep
 func_options_prep ()
 {
@@ -1860,8 +1710,14 @@ func_options_prep ()
     opt_verbose=false
     opt_warning_types=
 
-    func_run_hooks func_options_prep ${1+"$@"}
-    func_propagate_result func_run_hooks func_options_prep
+    _G_rc_options_prep=false
+    if func_run_hooks func_options_prep ${1+"$@"}; then
+      _G_rc_options_prep=:
+      # save modified positional parameters for caller
+      func_options_prep_result=$func_run_hooks_result
+    fi
+
+    $_G_rc_options_prep
 }
 
 
@@ -1873,32 +1729,27 @@ func_parse_options ()
 {
     $debug_cmd
 
-    _G_parse_options_requote=false
+    func_parse_options_result=
+
+    _G_rc_parse_options=false
     # this just eases exit handling
     while test $# -gt 0; do
       # Defer to hook functions for initial option parsing, so they
       # get priority in the event of reusing an option name.
-      func_run_hooks func_parse_options ${1+"$@"}
-      func_propagate_result func_run_hooks func_parse_options
-      if $func_propagate_result_result; then
-        eval set dummy "$func_parse_options_result"; shift
-        # Even though we may have changed "$@", we passed the "$@" array
-        # down into the hook and it quoted it for us (because we are in
-        # this if-branch).  No need to quote it again.
-        _G_parse_options_requote=false
+      if func_run_hooks func_parse_options ${1+"$@"}; then
+        eval set dummy "$func_run_hooks_result"; shift
+        _G_rc_parse_options=:
       fi
 
       # Break out of the loop if we already parsed every option.
       test $# -gt 0 || break
 
-      # We expect that one of the options parsed in this function matches
-      # and thus we remove _G_opt from "$@" and need to re-quote.
       _G_match_parse_options=:
       _G_opt=$1
       shift
       case $_G_opt in
         --debug|-x)   debug_cmd='set -x'
-                      func_echo "enabling shell trace mode" >&2
+                      func_echo "enabling shell trace mode"
                       $debug_cmd
                       ;;
 
@@ -1909,7 +1760,7 @@ func_parse_options ()
 
         --warnings|--warning|-W)
                       if test $# = 0 && func_missing_arg $_G_opt; then
-                        _G_parse_options_requote=:
+                        _G_rc_parse_options=:
                         break
                       fi
                       case " $warning_categories $1" in
@@ -1964,7 +1815,7 @@ func_parse_options ()
                       shift
                       ;;
 
-        --)           _G_parse_options_requote=: ; break ;;
+        --)           _G_rc_parse_options=: ; break ;;
         -*)           func_fatal_help "unrecognised option: '$_G_opt'" ;;
         *)            set dummy "$_G_opt" ${1+"$@"}; shift
                       _G_match_parse_options=false
@@ -1972,16 +1823,17 @@ func_parse_options ()
                       ;;
       esac
 
-      if $_G_match_parse_options; then
-        _G_parse_options_requote=:
-      fi
+      $_G_match_parse_options && _G_rc_parse_options=:
     done
 
-    if $_G_parse_options_requote; then
+
+    if $_G_rc_parse_options; then
       # save modified positional parameters for caller
-      func_quote eval ${1+"$@"}
-      func_parse_options_result=$func_quote_result
+      func_quote_for_eval ${1+"$@"}
+      func_parse_options_result=$func_quote_for_eval_result
     fi
+
+    $_G_rc_parse_options
 }
 
 
@@ -1994,14 +1846,21 @@ func_validate_options ()
 {
     $debug_cmd
 
+    _G_rc_validate_options=false
+
     # Display all warnings if -W was not given.
     test -n "$opt_warning_types" || opt_warning_types=" $warning_categories"
 
-    func_run_hooks func_validate_options ${1+"$@"}
-    func_propagate_result func_run_hooks func_validate_options
+    if func_run_hooks func_validate_options ${1+"$@"}; then
+      # save modified positional parameters for caller
+      func_validate_options_result=$func_run_hooks_result
+      _G_rc_validate_options=:
+    fi
 
     # Bail if the options were screwed!
     $exit_cmd $EXIT_FAILURE
+
+    $_G_rc_validate_options
 }
 
 
@@ -2057,8 +1916,8 @@ func_missing_arg ()
 
 # func_split_equals STRING
 # ------------------------
-# Set func_split_equals_lhs and func_split_equals_rhs shell variables
-# after splitting STRING at the '=' sign.
+# Set func_split_equals_lhs and func_split_equals_rhs shell variables after
+# splitting STRING at the '=' sign.
 test -z "$_G_HAVE_XSI_OPS" \
     && (eval 'x=a/b/c;
       test 5aa/bb/cc = "${#x}${x%%/*}${x%/*}${x#*/}${x##*/}"') 2>/dev/null \
@@ -2073,9 +1932,8 @@ then
 
       func_split_equals_lhs=${1%%=*}
       func_split_equals_rhs=${1#*=}
-      if test "x$func_split_equals_lhs" = "x$1"; then
-        func_split_equals_rhs=
-      fi
+      test "x$func_split_equals_lhs" = "x$1" \
+        && func_split_equals_rhs=
   }'
 else
   # ...otherwise fall back to using expr, which is often a shell builtin.
@@ -2085,7 +1943,7 @@ else
 
       func_split_equals_lhs=`expr "x$1" : 'x\([^=]*\)'`
       func_split_equals_rhs=
-      test "x$func_split_equals_lhs=" = "x$1" \
+      test "x$func_split_equals_lhs" = "x$1" \
         || func_split_equals_rhs=`expr "x$1" : 'x[^=]*=\(.*\)$'`
   }
 fi #func_split_equals
@@ -2111,7 +1969,7 @@ else
   {
       $debug_cmd
 
-      func_split_short_opt_name=`expr "x$1" : 'x\(-.\)'`
+      func_split_short_opt_name=`expr "x$1" : 'x-\(.\)'`
       func_split_short_opt_arg=`expr "x$1" : 'x-.\(.*\)$'`
   }
 fi #func_split_short_opt
@@ -2153,44 +2011,31 @@ func_usage_message ()
 # func_version
 # ------------
 # Echo version message to standard output and exit.
-# The version message is extracted from the calling file's header
-# comments, with leading '# ' stripped:
-#   1. First display the progname and version
-#   2. Followed by the header comment line matching  /^# Written by /
-#   3. Then a blank line followed by the first following line matching
-#      /^# Copyright /
-#   4. Immediately followed by any lines between the previous matches,
-#      except lines preceding the intervening completely blank line.
-# For example, see the header comments of this file.
 func_version ()
 {
     $debug_cmd
 
     printf '%s\n' "$progname $scriptversion"
     $SED -n '
-        /^# Written by /!b
-        s|^# ||; p; n
-
-        :fwd2blnk
-        /./ {
-          n
-          b fwd2blnk
+        /(C)/!b go
+        :more
+        /\./!{
+          N
+          s|\n# | |
+          b more
         }
-        p; n
-
-        :holdwrnt
-        s|^# ||
-        s|^# *$||
-        /^Copyright /!{
-          /./H
-          n
-          b holdwrnt
+        :go
+        /^# Written by /,/# warranty; / {
+          s|^# ||
+          s|^# *$||
+          s|\((C)\)[ 0-9,-]*[ ,-]\([1-9][0-9]* \)|\1 \2|
+          p
         }
-
-        s|\((C)\)[ 0-9,-]*[ ,-]\([1-9][0-9]* \)|\1 \2|
-        G
-        s|\(\n\)\n*|\1|g
-        p; q' < "$progpath"
+        /^# Written by / {
+          s|^# ||
+          p
+        }
+        /^warranty; /q' < "$progpath"
 
     exit $?
 }
@@ -2200,12 +2045,12 @@ func_version ()
 # mode: shell-script
 # sh-indentation: 2
 # eval: (add-hook 'before-save-hook 'time-stamp)
-# time-stamp-pattern: "30/scriptversion=%:y-%02m-%02d.%02H; # UTC"
+# time-stamp-pattern: "10/scriptversion=%:y-%02m-%02d.%02H; # UTC"
 # time-stamp-time-zone: "UTC"
 # End:
 
 # Set a version string.
-scriptversion='(GNU libtool) 2.4.7'
+scriptversion='(GNU libtool) 2.4.6'
 
 
 # func_echo ARG...
@@ -2296,7 +2141,7 @@ include the following information:
        compiler:       $LTCC
        compiler flags: $LTCFLAGS
        linker:         $LD (gnu? $with_gnu_ld)
-       version:        $progname $scriptversion Debian-2.4.7-7
+       version:        $progname $scriptversion Debian-2.4.6-14
        automake:       `($AUTOMAKE --version) 2>/dev/null |$SED 1q`
        autoconf:       `($AUTOCONF --version) 2>/dev/null |$SED 1q`
 
@@ -2352,7 +2197,7 @@ fi
 # a configuration failure hint, and exit.
 func_fatal_configuration ()
 {
-    func_fatal_error ${1+"$@"} \
+    func__fatal_error ${1+"$@"} \
       "See the $PACKAGE documentation for more information." \
       "Fatal configuration error."
 }
@@ -2500,8 +2345,6 @@ libtool_options_prep ()
 
     _G_rc_lt_options_prep=:
 
-    _G_rc_lt_options_prep=:
-
     # Shorthand for --mode=foo, only valid as the first argument
     case $1 in
     clean|clea|cle|cl)
@@ -2532,9 +2375,11 @@ libtool_options_prep ()
 
     if $_G_rc_lt_options_prep; then
       # Pass back the list of options.
-      func_quote eval ${1+"$@"}
-      libtool_options_prep_result=$func_quote_result
+      func_quote_for_eval ${1+"$@"}
+      libtool_options_prep_result=$func_quote_for_eval_result
     fi
+
+    $_G_rc_lt_options_prep
 }
 func_add_hook func_options_prep libtool_options_prep
 
@@ -2637,9 +2482,11 @@ libtool_parse_options ()
 
     if $_G_rc_lt_parse_options; then
       # save modified positional parameters for caller
-      func_quote eval ${1+"$@"}
-      libtool_parse_options_result=$func_quote_result
+      func_quote_for_eval ${1+"$@"}
+      libtool_parse_options_result=$func_quote_for_eval_result
     fi
+
+    $_G_rc_lt_parse_options
 }
 func_add_hook func_parse_options libtool_parse_options
 
@@ -2696,8 +2543,8 @@ libtool_validate_options ()
     }
 
     # Pass back the unparsed argument list
-    func_quote eval ${1+"$@"}
-    libtool_validate_options_result=$func_quote_result
+    func_quote_for_eval ${1+"$@"}
+    libtool_validate_options_result=$func_quote_for_eval_result
 }
 func_add_hook func_validate_options libtool_validate_options
 
@@ -3663,8 +3510,8 @@ func_mode_compile ()
       esac
     done
 
-    func_quote_arg pretty "$libobj"
-    test "X$libobj" != "X$func_quote_arg_result" \
+    func_quote_for_eval "$libobj"
+    test "X$libobj" != "X$func_quote_for_eval_result" \
       && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"'	 &()|`$[]' \
       && func_warning "libobj name '$libobj' may not contain shell special characters."
     func_dirname_and_basename "$obj" "/" ""
@@ -3737,8 +3584,8 @@ compiler."
 
     func_to_tool_file "$srcfile" func_convert_file_msys_to_w32
     srcfile=$func_to_tool_file_result
-    func_quote_arg pretty "$srcfile"
-    qsrcfile=$func_quote_arg_result
+    func_quote_for_eval "$srcfile"
+    qsrcfile=$func_quote_for_eval_result
 
     # Only build a PIC object if we are building libtool libraries.
     if test yes = "$build_libtool_libs"; then
@@ -3893,8 +3740,7 @@ This mode accepts the following additional options:
   -prefer-non-pic   try to build non-PIC objects only
   -shared           do not build a '.o' file suitable for static linking
   -static           only build a '.o' file suitable for static linking
-  -Wc,FLAG
-  -Xcompiler FLAG   pass FLAG directly to the compiler
+  -Wc,FLAG          pass FLAG directly to the compiler
 
 COMPILE-COMMAND is a command to be used in creating a 'standard' object file
 from the given SOURCEFILE.
@@ -4000,8 +3846,6 @@ The following components of LINK-COMMAND are treated specially:
   -weak LIBNAME     declare that the target provides the LIBNAME interface
   -Wc,FLAG
   -Xcompiler FLAG   pass linker-specific FLAG directly to the compiler
-  -Wa,FLAG
-  -Xassembler FLAG  pass linker-specific FLAG directly to the assembler
   -Wl,FLAG
   -Xlinker FLAG     pass linker-specific FLAG directly to the linker
   -XCClinker FLAG   pass link-specific FLAG to the compiler driver (CC)
@@ -4344,8 +4188,8 @@ func_mode_install ()
        case $nonopt in *shtool*) :;; *) false;; esac
     then
       # Aesthetically quote it.
-      func_quote_arg pretty "$nonopt"
-      install_prog="$func_quote_arg_result "
+      func_quote_for_eval "$nonopt"
+      install_prog="$func_quote_for_eval_result "
       arg=$1
       shift
     else
@@ -4355,8 +4199,8 @@ func_mode_install ()
 
     # The real first argument should be the name of the installation program.
     # Aesthetically quote it.
-    func_quote_arg pretty "$arg"
-    func_append install_prog "$func_quote_arg_result"
+    func_quote_for_eval "$arg"
+    func_append install_prog "$func_quote_for_eval_result"
     install_shared_prog=$install_prog
     case " $install_prog " in
       *[\\\ /]cp\ *) install_cp=: ;;
@@ -4413,12 +4257,12 @@ func_mode_install ()
       esac
 
       # Aesthetically quote the argument.
-      func_quote_arg pretty "$arg"
-      func_append install_prog " $func_quote_arg_result"
+      func_quote_for_eval "$arg"
+      func_append install_prog " $func_quote_for_eval_result"
       if test -n "$arg2"; then
-	func_quote_arg pretty "$arg2"
+	func_quote_for_eval "$arg2"
       fi
-      func_append install_shared_prog " $func_quote_arg_result"
+      func_append install_shared_prog " $func_quote_for_eval_result"
     done
 
     test -z "$install_prog" && \
@@ -4429,8 +4273,8 @@ func_mode_install ()
 
     if test -n "$install_override_mode" && $no_mode; then
       if $install_cp; then :; else
-	func_quote_arg pretty "$install_override_mode"
-	func_append install_shared_prog " -m $func_quote_arg_result"
+	func_quote_for_eval "$install_override_mode"
+	func_append install_shared_prog " -m $func_quote_for_eval_result"
       fi
     fi
 
@@ -4726,8 +4570,8 @@ func_mode_install ()
 	        relink_command=`$ECHO "$relink_command" | $SED 's%@OUTPUT@%'"$outputname"'%g'`
 
 	        $opt_quiet || {
-	          func_quote_arg expand,pretty "$relink_command"
-		  eval "func_echo $func_quote_arg_result"
+	          func_quote_for_expand "$relink_command"
+		  eval "func_echo $func_quote_for_expand_result"
 	        }
 	        if eval "$relink_command"; then :
 	          else
@@ -5506,8 +5350,7 @@ else
   if test \"\$libtool_execute_magic\" != \"$magic\"; then
     file=\"\$0\""
 
-    func_quote_arg pretty "$ECHO"
-    qECHO=$func_quote_arg_result
+    qECHO=`$ECHO "$ECHO" | $SED "$sed_quote_subst"`
     $ECHO "\
 
 # A function that is used when there is no print builtin or printf.
@@ -5517,7 +5360,7 @@ func_fallback_echo ()
 \$1
 _LTECHO_EOF'
 }
-    ECHO=$qECHO
+    ECHO=\"$qECHO\"
   fi
 
 # Very basic option parsing. These options are (a) specific to
@@ -6860,9 +6703,9 @@ func_mode_link ()
     while test "$#" -gt 0; do
       arg=$1
       shift
-      func_quote_arg pretty,unquoted "$arg"
-      qarg=$func_quote_arg_unquoted_result
-      func_append libtool_args " $func_quote_arg_result"
+      func_quote_for_eval "$arg"
+      qarg=$func_quote_for_eval_unquoted_result
+      func_append libtool_args " $func_quote_for_eval_result"
 
       # If the previous option needs an argument, assign it.
       if test -n "$prev"; then
@@ -7098,13 +6941,6 @@ func_mode_link ()
 	  prev=
 	  continue
 	  ;;
-	xassembler)
-	  func_append compiler_flags " -Xassembler $qarg"
-	  prev=
-	  func_append compile_command " -Xassembler $qarg"
-	  func_append finalize_command " -Xassembler $qarg"
-	  continue
-	  ;;
 	xcclinker)
 	  func_append linker_flags " $qarg"
 	  func_append compiler_flags " $qarg"
@@ -7275,7 +7111,7 @@ func_mode_link ()
 	    # These systems don't actually have a C library (as such)
 	    test X-lc = "X$arg" && continue
 	    ;;
-	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig* | *-*-midnightbsd*)
+	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig*)
 	    # Do not include libc due to us having libc/libc_r.
 	    test X-lc = "X$arg" && continue
 	    ;;
@@ -7295,7 +7131,7 @@ func_mode_link ()
 	  esac
 	elif test X-lc_r = "X$arg"; then
 	 case $host in
-	 *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig* | *-*-midnightbsd*)
+	 *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-bitrig*)
 	   # Do not include libc_r directly, use -pthread flag.
 	   continue
 	   ;;
@@ -7325,20 +7161,8 @@ func_mode_link ()
 	prev=xcompiler
 	continue
 	;;
-     # Solaris ld rejects as of 11.4. Refer to Oracle bug 22985199.
-     -pthread)
-	case $host in
-	  *solaris2*) ;;
-	  *)
-	    case "$new_inherited_linker_flags " in
-	        *" $arg "*) ;;
-	        * ) func_append new_inherited_linker_flags " $arg" ;;
-	    esac
-	  ;;
-	esac
-	continue
-	;;
-      -mt|-mthreads|-kthread|-Kthread|-pthreads|--thread-safe \
+
+      -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \
       |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*)
 	func_append compiler_flags " $arg"
 	func_append compile_command " $arg"
@@ -7479,9 +7303,9 @@ func_mode_link ()
 	save_ifs=$IFS; IFS=,
 	for flag in $args; do
 	  IFS=$save_ifs
-          func_quote_arg pretty "$flag"
-	  func_append arg " $func_quote_arg_result"
-	  func_append compiler_flags " $func_quote_arg_result"
+          func_quote_for_eval "$flag"
+	  func_append arg " $func_quote_for_eval_result"
+	  func_append compiler_flags " $func_quote_for_eval_result"
 	done
 	IFS=$save_ifs
 	func_stripname ' ' '' "$arg"
@@ -7495,21 +7319,16 @@ func_mode_link ()
 	save_ifs=$IFS; IFS=,
 	for flag in $args; do
 	  IFS=$save_ifs
-          func_quote_arg pretty "$flag"
-	  func_append arg " $wl$func_quote_arg_result"
-	  func_append compiler_flags " $wl$func_quote_arg_result"
-	  func_append linker_flags " $func_quote_arg_result"
+          func_quote_for_eval "$flag"
+	  func_append arg " $wl$func_quote_for_eval_result"
+	  func_append compiler_flags " $wl$func_quote_for_eval_result"
+	  func_append linker_flags " $func_quote_for_eval_result"
 	done
 	IFS=$save_ifs
 	func_stripname ' ' '' "$arg"
 	arg=$func_stripname_result
 	;;
 
-      -Xassembler)
-        prev=xassembler
-        continue
-        ;;
-
       -Xcompiler)
 	prev=xcompiler
 	continue
@@ -7527,8 +7346,8 @@ func_mode_link ()
 
       # -msg_* for osf cc
       -msg_*)
-	func_quote_arg pretty "$arg"
-	arg=$func_quote_arg_result
+	func_quote_for_eval "$arg"
+	arg=$func_quote_for_eval_result
 	;;
 
       # Flags to be passed through unchanged, with rationale:
@@ -7551,13 +7370,12 @@ func_mode_link ()
       # -fuse-ld=*           Linker select flags for GCC
       # -static-*            direct GCC to link specific libraries statically
       # -fcilkplus           Cilk Plus language extension features for C/C++
-      # -Wa,*                Pass flags directly to the assembler
       -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
       -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
       -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*| \
-      -specs=*|-fsanitize=*|-fuse-ld=*|-static-*|-fcilkplus|-Wa,*)
-        func_quote_arg pretty "$arg"
-	arg=$func_quote_arg_result
+      -specs=*|-fsanitize=*|-fuse-ld=*|-static-*|-fcilkplus)
+        func_quote_for_eval "$arg"
+	arg=$func_quote_for_eval_result
         func_append compile_command " $arg"
         func_append finalize_command " $arg"
         func_append compiler_flags " $arg"
@@ -7578,15 +7396,15 @@ func_mode_link ()
 	  continue
         else
 	  # Otherwise treat like 'Some other compiler flag' below
-	  func_quote_arg pretty "$arg"
-	  arg=$func_quote_arg_result
+	  func_quote_for_eval "$arg"
+	  arg=$func_quote_for_eval_result
         fi
 	;;
 
       # Some other compiler flag.
       -* | +*)
-        func_quote_arg pretty "$arg"
-	arg=$func_quote_arg_result
+        func_quote_for_eval "$arg"
+	arg=$func_quote_for_eval_result
 	;;
 
       *.$objext)
@@ -7706,8 +7524,8 @@ func_mode_link ()
       *)
 	# Unknown arguments in both finalize_command and compile_command need
 	# to be aesthetically quoted because they are evaled later.
-	func_quote_arg pretty "$arg"
-	arg=$func_quote_arg_result
+	func_quote_for_eval "$arg"
+	arg=$func_quote_for_eval_result
 	;;
       esac # arg
 
@@ -8915,7 +8733,7 @@ func_mode_link ()
       test CXX = "$tagname" && {
         case $host_os in
         linux*)
-          case `$CC -V 2>&1 | $SED 5q` in
+          case `$CC -V 2>&1 | sed 5q` in
           *Sun\ C*) # Sun C++ 5.9
             func_suncc_cstd_abi
 
@@ -9088,7 +8906,7 @@ func_mode_link ()
 	  #
 	  case $version_type in
 	  # correct linux to gnu/linux during the next big refactor
-	  darwin|freebsd-elf|linux|midnightbsd-elf|osf|windows|none)
+	  darwin|freebsd-elf|linux|osf|windows|none)
 	    func_arith $number_major + $number_minor
 	    current=$func_arith_result
 	    age=$number_minor
@@ -9182,7 +9000,7 @@ func_mode_link ()
 	  versuffix=.$current.$revision
 	  ;;
 
-	freebsd-elf | midnightbsd-elf)
+	freebsd-elf)
 	  func_arith $current - $age
 	  major=.$func_arith_result
 	  versuffix=$major.$age.$revision
@@ -9408,7 +9226,7 @@ func_mode_link ()
 	  *-*-netbsd*)
 	    # Don't link with libc until the a.out ld.so is fixed.
 	    ;;
-	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly* | *-*-midnightbsd*)
+	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
 	    # Do not include libc due to us having libc/libc_r.
 	    ;;
 	  *-*-sco3.2v5* | *-*-sco5v6*)
@@ -10219,8 +10037,8 @@ EOF
 	    for cmd in $concat_cmds; do
 	      IFS=$save_ifs
 	      $opt_quiet || {
-		  func_quote_arg expand,pretty "$cmd"
-		  eval "func_echo $func_quote_arg_result"
+		  func_quote_for_expand "$cmd"
+		  eval "func_echo $func_quote_for_expand_result"
 	      }
 	      $opt_dry_run || eval "$cmd" || {
 		lt_exit=$?
@@ -10313,8 +10131,8 @@ EOF
 	  eval cmd=\"$cmd\"
 	  IFS=$save_ifs
 	  $opt_quiet || {
-	    func_quote_arg expand,pretty "$cmd"
-	    eval "func_echo $func_quote_arg_result"
+	    func_quote_for_expand "$cmd"
+	    eval "func_echo $func_quote_for_expand_result"
 	  }
 	  $opt_dry_run || eval "$cmd" || {
 	    lt_exit=$?
@@ -10788,13 +10606,12 @@ EOF
 	  elif eval var_value=\$$var; test -z "$var_value"; then
 	    relink_command="$var=; export $var; $relink_command"
 	  else
-	    func_quote_arg pretty "$var_value"
-	    relink_command="$var=$func_quote_arg_result; export $var; $relink_command"
+	    func_quote_for_eval "$var_value"
+	    relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
 	  fi
 	done
-	func_quote eval cd "`pwd`"
-	func_quote_arg pretty,unquoted "($func_quote_result; $relink_command)"
-	relink_command=$func_quote_arg_unquoted_result
+	relink_command="(cd `pwd`; $relink_command)"
+	relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"`
       fi
 
       # Only actually do things if not in dry run mode.
@@ -11034,15 +10851,13 @@ EOF
 	elif eval var_value=\$$var; test -z "$var_value"; then
 	  relink_command="$var=; export $var; $relink_command"
 	else
-	  func_quote_arg pretty,unquoted "$var_value"
-	  relink_command="$var=$func_quote_arg_unquoted_result; export $var; $relink_command"
+	  func_quote_for_eval "$var_value"
+	  relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
 	fi
       done
       # Quote the link command for shipping.
-      func_quote eval cd "`pwd`"
-      relink_command="($func_quote_result; $SHELL \"$progpath\" $preserve_args --mode=relink $libtool_args @inst_prefix_dir@)"
-      func_quote_arg pretty,unquoted "$relink_command"
-      relink_command=$func_quote_arg_unquoted_result
+      relink_command="(cd `pwd`; $SHELL \"$progpath\" $preserve_args --mode=relink $libtool_args @inst_prefix_dir@)"
+      relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"`
       if test yes = "$hardcode_automatic"; then
 	relink_command=
       fi
diff --git a/build-aux/missing b/build-aux/missing
index 1fe1611..625aeb1 100755
--- a/build-aux/missing
+++ b/build-aux/missing
@@ -3,7 +3,7 @@
 
 scriptversion=2018-03-07.03; # UTC
 
-# Copyright (C) 1996-2021 Free Software Foundation, Inc.
+# Copyright (C) 1996-2018 Free Software Foundation, Inc.
 # Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
 
 # This program is free software; you can redistribute it and/or modify
diff --git a/build-aux/test-driver b/build-aux/test-driver
index be73b80..b8521a4 100755
--- a/build-aux/test-driver
+++ b/build-aux/test-driver
@@ -3,7 +3,7 @@
 
 scriptversion=2018-03-07.03; # UTC
 
-# Copyright (C) 2011-2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2018 Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -42,13 +42,11 @@ print_usage ()
 {
   cat <<END
 Usage:
-  test-driver --test-name NAME --log-file PATH --trs-file PATH
-              [--expect-failure {yes|no}] [--color-tests {yes|no}]
-              [--enable-hard-errors {yes|no}] [--]
+  test-driver --test-name=NAME --log-file=PATH --trs-file=PATH
+              [--expect-failure={yes|no}] [--color-tests={yes|no}]
+              [--enable-hard-errors={yes|no}] [--]
               TEST-SCRIPT [TEST-SCRIPT-ARGUMENTS]
-
 The '--test-name', '--log-file' and '--trs-file' options are mandatory.
-See the GNU Automake documentation for information.
 END
 }
 
@@ -105,11 +103,8 @@ trap "st=130; $do_exit" 2
 trap "st=141; $do_exit" 13
 trap "st=143; $do_exit" 15
 
-# Test script is run here. We create the file first, then append to it,
-# to ameliorate tests themselves also writing to the log file. Our tests
-# don't, but others can (automake bug#35762).
-: >"$log_file"
-"$@" >>"$log_file" 2>&1
+# Test script is run here.
+"$@" >$log_file 2>&1
 estatus=$?
 
 if test $enable_hard_errors = no && test $estatus -eq 99; then
@@ -131,7 +126,7 @@ esac
 # know whether the test passed or failed simply by looking at the '.log'
 # file, without the need of also peaking into the corresponding '.trs'
 # file (automake bug#11814).
-echo "$res $test_name (exit status: $estatus)" >>"$log_file"
+echo "$res $test_name (exit status: $estatus)" >>$log_file
 
 # Report outcome to console.
 echo "${col}${res}${std}: $test_name"
