Index: config.sub
===================================================================
--- config.sub	(revision 06ef76e3a9767a2c1be8d8a30b4a47eef19e2e6c)
+++ config.sub	(revision 6418c91d5a49a94755e27310229cd4cd59e60d7e)
@@ -1,7 +1,7 @@
 #! /bin/sh
 # Configuration validation subroutine script.
-#   Copyright 1992-2015 Free Software Foundation, Inc.
-
-timestamp='2015-08-20'
+#   Copyright 1992-2018 Free Software Foundation, Inc.
+
+timestamp='2018-07-03'
 
 # This file is free software; you can redistribute it and/or modify it
@@ -16,5 +16,5 @@
 #
 # You should have received a copy of the GNU General Public License
-# along with this program; if not, see <http://www.gnu.org/licenses/>.
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
 #
 # As a special exception to the GNU General Public License, if you
@@ -34,5 +34,5 @@
 
 # You can get the latest version of this script from:
-# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
+# 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
@@ -54,10 +54,9 @@
 
 usage="\
-Usage: $0 [OPTION] CPU-MFR-OPSYS
-       $0 [OPTION] ALIAS
+Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS
 
 Canonicalize a configuration name.
 
-Operation modes:
+Options:
   -h, --help         print this help, then exit
   -t, --time-stamp   print date of last modification, then exit
@@ -69,5 +68,5 @@
 GNU config.sub ($timestamp)
 
-Copyright 1992-2015 Free Software Foundation, Inc.
+Copyright 1992-2018 Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
@@ -96,5 +95,5 @@
     *local*)
        # First pass through any local machine types.
-       echo $1
+       echo "$1"
        exit ;;
 
@@ -112,132 +111,453 @@
 esac
 
-# 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 $maybe_os in
-  nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
-  linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
-  knetbsd*-gnu* | netbsd*-gnu* | netbsd*-eabi* | \
-  kopensolaris*-gnu* | \
-  storm-chaos* | os2-emx* | rtmk-nova*)
-    os=-$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
-
-### 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.
-		;;
-	-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
-		;;
-	-bluegene*)
-		os=-cnk
-		;;
-	-sim | -cisco | -oki | -wec | -winbond)
-		os=
-		basic_machine=$1
-		;;
-	-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/'`
-		;;
-	-windowsnt*)
-		os=`echo $os | sed -e 's/windowsnt/winnt/'`
-		;;
-	-psos*)
-		os=-psos
-		;;
-	-mint | -mint[0-9]*)
-		basic_machine=m68k-atari
-		os=-mint
+# Split fields of configuration type
+IFS="-" read -r field1 field2 field3 field4 <<EOF
+$1
+EOF
+
+# Separate into logical components for further validation
+case $1 in
+	*-*-*-*-*)
+		echo Invalid configuration \`"$1"\': more than four components >&2
+		exit 1
+		;;
+	*-*-*-*)
+		basic_machine=$field1-$field2
+		os=$field3-$field4
+		;;
+	*-*-*)
+		# Ambiguous whether COMPANY is present, or skipped and KERNEL-OS is two
+		# parts
+		maybe_os=$field2-$field3
+		case $maybe_os in
+			nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc \
+			| linux-newlib* | linux-musl* | linux-uclibc* | uclinux-uclibc* \
+			| uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* \
+			| netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \
+			| storm-chaos* | os2-emx* | rtmk-nova*)
+				basic_machine=$field1
+				os=$maybe_os
+				;;
+			android-linux)
+				basic_machine=$field1-unknown
+				os=linux-android
+				;;
+			*)
+				basic_machine=$field1-$field2
+				os=$field3
+				;;
+		esac
+		;;
+	*-*)
+		# 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
+				os=$field2
+				;;
+			# Manufacturers
+			dec* | mips* | sequent* | encore* | pc532* | sgi* | sony* \
+			| att* | 7300* | 3300* | delta* | motorola* | sun[234]* \
+			| unicom* | ibm* | next | hp | isi* | apollo | altos* \
+			| convergent* | ncr* | news | 32* | 3600* | 3100* | hitachi* \
+			| c[123]* | convex* | sun | crds | omron* | dg | ultra | tti* \
+			| harris | dolphin | highlevel | gould | cbm | ns | masscomp \
+			| apple | axis | knuth | cray | microblaze* \
+			| sim | cisco | oki | wec | wrs | winbond)
+				basic_machine=$field1-$field2
+				os=
+				;;
+			*)
+				basic_machine=$field1
+				os=$field2
+				;;
+		esac
+		;;
+	*)
+		# Convert single-component short-hands not valid as part of
+		# multi-component configurations.
+		case $field1 in
+			386bsd)
+				basic_machine=i386-pc
+				os=bsd
+				;;
+			a29khif)
+				basic_machine=a29k-amd
+				os=udi
+				;;
+			adobe68k)
+				basic_machine=m68010-adobe
+				os=scout
+				;;
+			am29k)
+				basic_machine=a29k-none
+				os=bsd
+				;;
+			amdahl)
+				basic_machine=580-amdahl
+				os=sysv
+				;;
+			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
+				;;
+			aux)
+				basic_machine=m68k-apple
+				os=aux
+				;;
+			balance)
+				basic_machine=ns32k-sequent
+				os=dynix
+				;;
+			blackfin)
+				basic_machine=bfin-unknown
+				os=linux
+				;;
+			cegcc)
+				basic_machine=arm-unknown
+				os=cegcc
+				;;
+			cray)
+				basic_machine=j90-cray
+				os=unicos
+				;;
+			craynv)
+				basic_machine=craynv-cray
+				os=unicosmp
+				;;
+			delta88)
+				basic_machine=m88k-motorola
+				os=sysv3
+				;;
+			dicos)
+				basic_machine=i686-pc
+				os=dicos
+				;;
+			djgpp)
+				basic_machine=i586-pc
+				os=msdosdjgpp
+				;;
+			ebmon29k)
+				basic_machine=a29k-amd
+				os=ebmon
+				;;
+			es1800 | OSE68k | ose68k | ose | OSE)
+				basic_machine=m68k-ericsson
+				os=ose
+				;;
+			gmicro)
+				basic_machine=tron-gmicro
+				os=sysv
+				;;
+			go32)
+				basic_machine=i386-pc
+				os=go32
+				;;
+			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
+				;;
+			hp300bsd)
+				basic_machine=m68k-hp
+				os=bsd
+				;;
+			hp300hpux)
+				basic_machine=m68k-hp
+				os=hpux
+				;;
+			hppaosf)
+				basic_machine=hppa1.1-hp
+				os=osf
+				;;
+			hppro)
+				basic_machine=hppa1.1-hp
+				os=proelf
+				;;
+			i386mach)
+				basic_machine=i386-mach
+				os=mach
+				;;
+			vsta)
+				basic_machine=i386-unknown
+				os=vsta
+				;;
+			isi68 | isi)
+				basic_machine=m68k-isi
+				os=sysv
+				;;
+			m68knommu)
+				basic_machine=m68k-unknown
+				os=linux
+				;;
+			magnum | m3230)
+				basic_machine=mips-mips
+				os=sysv
+				;;
+			merlin)
+				basic_machine=ns32k-utek
+				os=sysv
+				;;
+			mingw64)
+				basic_machine=x86_64-pc
+				os=mingw64
+				;;
+			mingw32)
+				basic_machine=i686-pc
+				os=mingw32
+				;;
+			mingw32ce)
+				basic_machine=arm-unknown
+				os=mingw32ce
+				;;
+			monitor)
+				basic_machine=m68k-rom68k
+				os=coff
+				;;
+			morphos)
+				basic_machine=powerpc-unknown
+				os=morphos
+				;;
+			moxiebox)
+				basic_machine=moxie-unknown
+				os=moxiebox
+				;;
+			msdos)
+				basic_machine=i386-pc
+				os=msdos
+				;;
+			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
+				;;
+			necv70)
+				basic_machine=v70-nec
+				os=sysv
+				;;
+			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
+				;;
+			os400)
+				basic_machine=powerpc-ibm
+				os=os400
+				;;
+			OSE68000 | ose68000)
+				basic_machine=m68000-ericsson
+				os=ose
+				;;
+			os68k)
+				basic_machine=m68k-none
+				os=os68k
+				;;
+			paragon)
+				basic_machine=i860-intel
+				os=osf
+				;;
+			parisc)
+				basic_machine=hppa-unknown
+				os=linux
+				;;
+			pw32)
+				basic_machine=i586-unknown
+				os=pw32
+				;;
+			rdos | rdos64)
+				basic_machine=x86_64-pc
+				os=rdos
+				;;
+			rdos32)
+				basic_machine=i386-pc
+				os=rdos
+				;;
+			rom68k)
+				basic_machine=m68k-rom68k
+				os=coff
+				;;
+			sa29200)
+				basic_machine=a29k-amd
+				os=udi
+				;;
+			sei)
+				basic_machine=mips-sei
+				os=seiux
+				;;
+			sps7)
+				basic_machine=m68k-bull
+				os=sysv2
+				;;
+			stratus)
+				basic_machine=i860-stratus
+				os=sysv4
+				;;
+			sun2os3)
+				basic_machine=m68000-sun
+				os=sunos3
+				;;
+			sun2os4)
+				basic_machine=m68000-sun
+				os=sunos4
+				;;
+			sun3os3)
+				basic_machine=m68k-sun
+				os=sunos3
+				;;
+			sun3os4)
+				basic_machine=m68k-sun
+				os=sunos4
+				;;
+			sun4os3)
+				basic_machine=sparc-sun
+				os=sunos3
+				;;
+			sun4os4)
+				basic_machine=sparc-sun
+				os=sunos4
+				;;
+			sun4sol2)
+				basic_machine=sparc-sun
+				os=solaris2
+				;;
+			sv1)
+				basic_machine=sv1-cray
+				os=unicos
+				;;
+			symmetry)
+				basic_machine=i386-sequent
+				os=dynix
+				;;
+			t3e)
+				basic_machine=alphaev5-cray
+				os=unicos
+				;;
+			t90)
+				basic_machine=t90-cray
+				os=unicos
+				;;
+			toad1)
+				basic_machine=pdp10-xkl
+				os=tops20
+				;;
+			tpf)
+				basic_machine=s390x-ibm
+				os=tpf
+				;;
+			udi29k)
+				basic_machine=a29k-amd
+				os=udi
+				;;
+			ultra3)
+				basic_machine=a29k-nyu
+				os=sym1
+				;;
+			v810 | necv810)
+				basic_machine=v810-nec
+				os=none
+				;;
+			vaxv)
+				basic_machine=vax-dec
+				os=sysv
+				;;
+			vms)
+				basic_machine=vax-dec
+				os=vms
+				;;
+			vxworks960)
+				basic_machine=i960-wrs
+				os=vxworks
+				;;
+			vxworks68)
+				basic_machine=m68k-wrs
+				os=vxworks
+				;;
+			vxworks29k)
+				basic_machine=a29k-wrs
+				os=vxworks
+				;;
+			xbox)
+				basic_machine=i686-pc
+				os=mingw32
+				;;
+			ymp)
+				basic_machine=ymp-cray
+				os=unicos
+				;;
+			*)
+				basic_machine=$1
+				os=
+				;;
+		esac
 		;;
 esac
@@ -254,10 +574,10 @@
 	| am33_2.0 \
 	| arc | arceb \
-	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
+	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv6m | armv[78][arm] \
 	| avr | avr32 \
 	| ba \
 	| be32 | be64 \
 	| bfin \
-	| c4x | c8051 | clipper \
+	| c4x | c8051 | clipper | csky \
 	| d10v | d30v | dlx | dsp16xx \
 	| e2k | epiphany \
@@ -265,5 +585,5 @@
 	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
 	| hexagon \
-	| i370 | i860 | i960 | ia64 \
+	| i370 | i860 | i960 | ia16 | ia64 \
 	| ip2k | iq2000 \
 	| k1om \
@@ -298,11 +618,13 @@
 	| msp430 \
 	| nds32 | nds32le | nds32be \
+	| nfp \
 	| nios | nios2 | nios2eb | nios2el \
 	| ns16k | ns32k \
 	| open8 | or1k | or1knd | or32 \
-	| pdp10 | pdp11 | pj | pjl \
+	| pdp10 | pj | pjl \
 	| powerpc | powerpc64 | powerpc64le | powerpcle \
+	| pru \
 	| pyramid \
-	| riscv32 | riscv64 \
+	| riscv | riscv32 | riscv64 \
 	| rl78 | rx \
 	| score \
@@ -316,5 +638,5 @@
 	| v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
 	| visium \
-	| we32k \
+	| wasm32 \
 	| x86 | xc16x | xstormy16 | xtensa \
 	| z8k | z80)
@@ -335,12 +657,15 @@
 	m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | nvptx | picochip)
 		basic_machine=$basic_machine-unknown
-		os=-none
-		;;
-	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
+		os=${os:-none}
+		;;
+	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65)
+		;;
+	m9s12z | m68hcs12z | hcs12z | s12z)
+		basic_machine=s12z-unknown
+		os=${os:-none}
 		;;
 	ms1)
 		basic_machine=mt-unknown
 		;;
-
 	strongarm | thumb | xscale)
 		basic_machine=arm-unknown
@@ -348,5 +673,5 @@
 	xgate)
 		basic_machine=$basic_machine-unknown
-		os=-none
+		os=${os:-none}
 		;;
 	xscaleeb)
@@ -364,9 +689,4 @@
 	  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-* \
@@ -382,5 +702,5 @@
 	| bfin-* | bs2000-* \
 	| c[123]* | c30-* | [cjt]90-* | c4x-* \
-	| c8051-* | clipper-* | craynv-* | cydra-* \
+	| c8051-* | clipper-* | craynv-* | csky-* | cydra-* \
 	| d10v-* | d30v-* | dlx-* \
 	| e2k-* | elxsi-* \
@@ -389,5 +709,5 @@
 	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
 	| hexagon-* \
-	| i*86-* | i860-* | i960-* | ia64-* \
+	| i*86-* | i860-* | i960-* | ia16-* | ia64-* \
 	| ip2k-* | iq2000-* \
 	| k1om-* \
@@ -423,4 +743,5 @@
 	| msp430-* \
 	| nds32-* | nds32le-* | nds32be-* \
+	| nfp-* \
 	| nios-* | nios2-* | nios2eb-* | nios2el-* \
 	| none-* | np1-* | ns16k-* | ns32k-* \
@@ -430,6 +751,7 @@
 	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
 	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \
+	| pru-* \
 	| pyramid-* \
-	| riscv32-* | riscv64-* \
+	| riscv-* | riscv32-* | riscv64-* \
 	| rl78-* | romp-* | rs6000-* | rx-* \
 	| sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
@@ -446,4 +768,5 @@
 	| vax-* \
 	| visium-* \
+	| wasm32-* \
 	| we32k-* \
 	| x86-* | x86_64-* | xc16x-* | xps100-* \
@@ -458,8 +781,4 @@
 	# 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-unknown
-		os=-bsd
-		;;
 	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
 		basic_machine=m68000-att
@@ -468,15 +787,7 @@
 		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
@@ -485,112 +796,60 @@
 		basic_machine=m68k-altos
 		;;
-	am29k)
-		basic_machine=a29k-none
-		os=-bsd
-		;;
 	amd64)
 		basic_machine=x86_64-pc
 		;;
 	amd64-*)
-		basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	amdahl)
-		basic_machine=580-amdahl
-		os=-sysv
+		basic_machine=x86_64-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	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)
+	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 $basic_machine | sed 's/^[^-]*-//'`
-		os=-linux
+		basic_machine=bfin-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		os=linux
 		;;
 	bluegene*)
 		basic_machine=powerpc-ibm
-		os=-cnk
+		os=cnk
 		;;
 	c54x-*)
-		basic_machine=tic54x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		basic_machine=tic54x-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	c55x-*)
-		basic_machine=tic55x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		basic_machine=tic55x-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	c6x-*)
-		basic_machine=tic6x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		basic_machine=tic6x-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	c90)
 		basic_machine=c90-cray
-		os=-unicos
-		;;
-	cegcc)
-		basic_machine=arm-unknown
-		os=-cegcc
+		os=${os:-unicos}
 		;;
 	convex-c1)
 		basic_machine=c1-convex
-		os=-bsd
+		os=bsd
 		;;
 	convex-c2)
 		basic_machine=c2-convex
-		os=-bsd
+		os=bsd
 		;;
 	convex-c32)
 		basic_machine=c32-convex
-		os=-bsd
+		os=bsd
 		;;
 	convex-c34)
 		basic_machine=c34-convex
-		os=-bsd
+		os=bsd
 		;;
 	convex-c38)
 		basic_machine=c38-convex
-		os=-bsd
-		;;
-	cray | j90)
-		basic_machine=j90-cray
-		os=-unicos
-		;;
-	craynv)
-		basic_machine=craynv-cray
-		os=-unicosmp
+		os=bsd
 		;;
 	cr16 | cr16-*)
 		basic_machine=cr16-unknown
-		os=-elf
+		os=${os:-elf}
 		;;
 	crds | unos)
@@ -605,5 +864,5 @@
 	crx)
 		basic_machine=crx-unknown
-		os=-elf
+		os=${os:-elf}
 		;;
 	da30 | da30-*)
@@ -615,9 +874,9 @@
 	decsystem10* | dec10*)
 		basic_machine=pdp10-dec
-		os=-tops10
+		os=tops10
 		;;
 	decsystem20* | dec20*)
 		basic_machine=pdp10-dec
-		os=-tops20
+		os=tops20
 		;;
 	delta | 3300 | motorola-3300 | motorola-delta \
@@ -625,38 +884,26 @@
 		basic_machine=m68k-motorola
 		;;
-	delta88)
-		basic_machine=m88k-motorola
-		os=-sysv3
-		;;
-	dicos)
-		basic_machine=i686-pc
-		os=-dicos
-		;;
-	djgpp)
-		basic_machine=i586-pc
-		os=-msdosdjgpp
-		;;
 	dpx20 | dpx20-*)
 		basic_machine=rs6000-bull
-		os=-bosx
-		;;
-	dpx2* | dpx2*-bull)
+		os=${os:-bosx}
+		;;
+	dpx2*)
 		basic_machine=m68k-bull
-		os=-sysv3
-		;;
-	ebmon29k)
-		basic_machine=a29k-amd
-		os=-ebmon
+		os=sysv3
+		;;
+	e500v[12])
+		basic_machine=powerpc-unknown
+		os=$os"spe"
+		;;
+	e500v[12]-*)
+		basic_machine=powerpc-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		os=$os"spe"
+		;;
+	encore | umax | mmax)
+		basic_machine=ns32k-encore
 		;;
 	elxsi)
 		basic_machine=elxsi-elxsi
-		os=-bsd
-		;;
-	encore | umax | mmax)
-		basic_machine=ns32k-encore
-		;;
-	es1800 | OSE68k | ose68k | ose | OSE)
-		basic_machine=m68k-ericsson
-		os=-ose
+		os=${os:-bsd}
 		;;
 	fx2800)
@@ -666,42 +913,10 @@
 		basic_machine=ns32k-ns
 		;;
-	gmicro)
-		basic_machine=tron-gmicro
-		os=-sysv
-		;;
-	go32)
-		basic_machine=i386-pc
-		os=-go32
-		;;
 	h3050r* | hiux*)
 		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
+		os=hiuxwe2
 		;;
 	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])
@@ -734,198 +949,80 @@
 		basic_machine=hppa1.0-hp
 		;;
-	hppa-next)
-		os=-nextstep3
-		;;
-	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)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-sysv32
+		basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'`
+		os=sysv32
 		;;
 	i*86v4*)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-sysv4
+		basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'`
+		os=sysv4
 		;;
 	i*86v)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-sysv
+		basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'`
+		os=sysv
 		;;
 	i*86sol2)
-		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
-		os=-solaris2
-		;;
-	i386mach)
-		basic_machine=i386-mach
-		os=-mach
-		;;
-	i386-vsta | vsta)
-		basic_machine=i386-unknown
-		os=-vsta
+		basic_machine=`echo "$1" | sed -e 's/86.*/86-pc/'`
+		os=solaris2
+		;;
+	j90 | j90-cray)
+		basic_machine=j90-cray
+		os=${os:-unicos}
 		;;
 	iris | iris4d)
 		basic_machine=mips-sgi
 		case $os in
-		    -irix*)
+		    irix*)
 			;;
 		    *)
-			os=-irix4
+			os=irix4
 			;;
 		esac
 		;;
-	isi68 | isi)
-		basic_machine=m68k-isi
-		os=-sysv
-		;;
 	leon-*|leon[3-9]-*)
-		basic_machine=sparc-`echo $basic_machine | sed 's/-.*//'`
-		;;
-	m68knommu)
-		basic_machine=m68k-unknown
-		os=-linux
+		basic_machine=sparc-`echo "$basic_machine" | sed 's/-.*//'`
 		;;
 	m68knommu-*)
-		basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'`
-		os=-linux
-		;;
-	m88k-omron*)
-		basic_machine=m88k-omron
-		;;
-	magnum | m3230)
-		basic_machine=mips-mips
-		os=-sysv
-		;;
-	merlin)
-		basic_machine=ns32k-utek
-		os=-sysv
+		basic_machine=m68k-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		os=linux
 		;;
 	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)
 		basic_machine=m68000-convergent
 		;;
-	*mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
+	*mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
 		basic_machine=m68k-atari
-		os=-mint
+		os=mint
 		;;
 	mips3*-*)
-		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
+		basic_machine=`echo "$basic_machine" | sed -e 's/mips3/mips64/'`
 		;;
 	mips3*)
-		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
-		;;
-	monitor)
-		basic_machine=m68k-rom68k
-		os=-coff
-		;;
-	morphos)
-		basic_machine=powerpc-unknown
-		os=-morphos
-		;;
-	moxiebox)
-		basic_machine=moxie-unknown
-		os=-moxiebox
-		;;
-	msdos)
-		basic_machine=i386-pc
-		os=-msdos
+		basic_machine=`echo "$basic_machine" | sed -e 's/mips3/mips64/'`-unknown
 		;;
 	ms1-*)
-		basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
-		;;
-	msys)
-		basic_machine=i686-pc
-		os=-msys
-		;;
-	mvs)
-		basic_machine=i370-ibm
-		os=-mvs
-		;;
-	nacl)
-		basic_machine=le32-unknown
-		os=-nacl
-		;;
-	ncr3000)
-		basic_machine=i486-ncr
-		os=-sysv4
-		;;
-	netbsd386)
-		basic_machine=i386-unknown
-		os=-netbsd
-		;;
-	netwinder)
-		basic_machine=armv4l-rebel
-		os=-linux
-		;;
-	news | news700 | news800 | news900)
-		basic_machine=m68k-sony
-		os=-newsos
-		;;
-	news1000)
-		basic_machine=m68030-sony
-		os=-newsos
+		basic_machine=`echo "$basic_machine" | sed -e 's/ms1-/mt-/'`
 		;;
 	news-3600 | risc-news)
 		basic_machine=mips-sony
-		os=-newsos
-		;;
-	necv70)
-		basic_machine=v70-nec
-		os=-sysv
-		;;
-	next | m*-next )
+		os=newsos
+		;;
+	next | m*-next)
 		basic_machine=m68k-next
 		case $os in
-		    -nextstep* )
+		    nextstep* )
 			;;
-		    -ns2*)
-		      os=-nextstep2
+		    ns2*)
+		      os=nextstep2
 			;;
 		    *)
-		      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)
 		basic_machine=np1-gould
@@ -940,38 +1037,24 @@
 		basic_machine=nsr-tandem
 		;;
+	nsv-tandem)
+		basic_machine=nsv-tandem
+		;;
+	nsx-tandem)
+		basic_machine=nsx-tandem
+		;;
 	op50n-* | op60c-*)
 		basic_machine=hppa1.1-oki
-		os=-proelf
+		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)
 		basic_machine=hppa1.1-hitachi
-		os=-hiuxwe2
-		;;
-	paragon)
-		basic_machine=i860-intel
-		os=-osf
-		;;
-	parisc)
-		basic_machine=hppa-unknown
-		os=-linux
+		os=hiuxwe2
 		;;
 	parisc-*)
-		basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'`
-		os=-linux
+		basic_machine=hppa-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		os=linux
 		;;
 	pbd)
@@ -988,5 +1071,5 @@
 		;;
 	pc98-*)
-		basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'`
+		basic_machine=i386-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	pentium | p5 | k5 | k6 | nexgen | viac3)
@@ -1003,14 +1086,14 @@
 		;;
 	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
-		basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
+		basic_machine=i586-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	pentiumpro-* | p6-* | 6x86-* | athlon-*)
-		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		basic_machine=i686-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
-		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		basic_machine=i686-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	pentium4-*)
-		basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
+		basic_machine=i786-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	pn)
@@ -1022,41 +1105,25 @@
 		;;
 	ppc-* | ppcbe-*)
-		basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	ppcle | powerpclittle | ppc-le | powerpc-little)
+		basic_machine=powerpc-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		;;
+	ppcle | powerpclittle)
 		basic_machine=powerpcle-unknown
 		;;
 	ppcle-* | powerpclittle-*)
-		basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
+		basic_machine=powerpcle-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	ppc64)	basic_machine=powerpc64-unknown
 		;;
-	ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
-		;;
-	ppc64le | powerpc64little | ppc64-le | powerpc64-little)
+	ppc64-*) basic_machine=powerpc64-`echo "$basic_machine" | sed 's/^[^-]*-//'`
+		;;
+	ppc64le | powerpc64little)
 		basic_machine=powerpc64le-unknown
 		;;
 	ppc64le-* | powerpc64little-*)
-		basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
+		basic_machine=powerpc64le-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	ps2)
 		basic_machine=i386-ibm
 		;;
-	pw32)
-		basic_machine=i586-unknown
-		os=-pw32
-		;;
-	rdos | rdos64)
-		basic_machine=x86_64-pc
-		os=-rdos
-		;;
-	rdos32)
-		basic_machine=i386-pc
-		os=-rdos
-		;;
-	rom68k)
-		basic_machine=m68k-rom68k
-		os=-coff
-		;;
 	rm[46]00)
 		basic_machine=mips-siemens
@@ -1071,8 +1138,4 @@
 		basic_machine=s390x-ibm
 		;;
-	sa29200)
-		basic_machine=a29k-amd
-		os=-udi
-		;;
 	sb1)
 		basic_machine=mipsisa64sb1-unknown
@@ -1083,30 +1146,15 @@
 	sde)
 		basic_machine=mipsisa32-sde
-		os=-elf
-		;;
-	sei)
-		basic_machine=mips-sei
-		os=-seiux
+		os=${os:-elf}
 		;;
 	sequent)
 		basic_machine=i386-sequent
 		;;
-	sh)
-		basic_machine=sh-hitachi
-		os=-hms
-		;;
 	sh5el)
 		basic_machine=sh5le-unknown
 		;;
-	sh64)
-		basic_machine=sh64-unknown
-		;;
-	sparclite-wrs | simso-wrs)
+	simso-wrs)
 		basic_machine=sparclite-wrs
-		os=-vxworks
-		;;
-	sps7)
-		basic_machine=m68k-bull
-		os=-sysv2
+		os=vxworks
 		;;
 	spur)
@@ -1116,42 +1164,10 @@
 		basic_machine=m68k-tandem
 		;;
-	stratus)
-		basic_machine=i860-stratus
-		os=-sysv4
-		;;
 	strongarm-* | thumb-*)
-		basic_machine=arm-`echo $basic_machine | sed 's/^[^-]*-//'`
+		basic_machine=arm-`echo "$basic_machine" | sed 's/^[^-]*-//'`
 		;;
 	sun2)
 		basic_machine=m68000-sun
 		;;
-	sun2os3)
-		basic_machine=m68000-sun
-		os=-sunos3
-		;;
-	sun2os4)
-		basic_machine=m68000-sun
-		os=-sunos4
-		;;
-	sun3os3)
-		basic_machine=m68k-sun
-		os=-sunos3
-		;;
-	sun3os4)
-		basic_machine=m68k-sun
-		os=-sunos4
-		;;
-	sun4os3)
-		basic_machine=sparc-sun
-		os=-sunos3
-		;;
-	sun4os4)
-		basic_machine=sparc-sun
-		os=-sunos4
-		;;
-	sun4sol2)
-		basic_machine=sparc-sun
-		os=-solaris2
-		;;
 	sun3 | sun3-*)
 		basic_machine=m68k-sun
@@ -1163,23 +1179,7 @@
 		basic_machine=i386-sun
 		;;
-	sv1)
-		basic_machine=sv1-cray
-		os=-unicos
-		;;
-	symmetry)
-		basic_machine=i386-sequent
-		os=-dynix
-		;;
-	t3e)
-		basic_machine=alphaev5-cray
-		os=-unicos
-		;;
-	t90)
-		basic_machine=t90-cray
-		os=-unicos
-		;;
 	tile*)
 		basic_machine=$basic_machine-unknown
-		os=-linux-gnu
+		os=linux-gnu
 		;;
 	tx39)
@@ -1189,61 +1189,20 @@
 		basic_machine=mipstx39el-unknown
 		;;
-	toad1)
-		basic_machine=pdp10-xkl
-		os=-tops20
-		;;
 	tower | tower-32)
 		basic_machine=m68k-ncr
 		;;
-	tpf)
-		basic_machine=s390x-ibm
-		os=-tpf
-		;;
-	udi29k)
-		basic_machine=a29k-amd
-		os=-udi
-		;;
-	ultra3)
-		basic_machine=a29k-nyu
-		os=-sym1
-		;;
-	v810 | necv810)
-		basic_machine=v810-nec
-		os=-none
-		;;
-	vaxv)
-		basic_machine=vax-dec
-		os=-sysv
-		;;
-	vms)
-		basic_machine=vax-dec
-		os=-vms
-		;;
 	vpp*|vx|vx-*)
 		basic_machine=f301-fujitsu
 		;;
-	vxworks960)
-		basic_machine=i960-wrs
-		os=-vxworks
-		;;
-	vxworks68)
-		basic_machine=m68k-wrs
-		os=-vxworks
-		;;
-	vxworks29k)
-		basic_machine=a29k-wrs
-		os=-vxworks
-		;;
 	w65*)
 		basic_machine=w65-wdc
-		os=-none
+		os=none
 		;;
 	w89k-*)
 		basic_machine=hppa1.1-winbond
-		os=-proelf
-		;;
-	xbox)
-		basic_machine=i686-pc
-		os=-mingw32
+		os=proelf
+		;;
+	x64)
+		basic_machine=x86_64-pc
 		;;
 	xps | xps100)
@@ -1251,21 +1210,9 @@
 		;;
 	xscale-* | xscalee[bl]-*)
-		basic_machine=`echo $basic_machine | sed 's/^xscale/arm/'`
-		;;
-	ymp)
-		basic_machine=ymp-cray
-		os=-unicos
-		;;
-	z8k-*-coff)
-		basic_machine=z8k-unknown
-		os=-sim
-		;;
-	z80-*-coff)
-		basic_machine=z80-unknown
-		os=-sim
+		basic_machine=`echo "$basic_machine" | sed 's/^xscale/arm/'`
 		;;
 	none)
 		basic_machine=none-none
-		os=-none
+		os=${os:-none}
 		;;
 
@@ -1293,8 +1240,4 @@
 		basic_machine=vax-dec
 		;;
-	pdp10)
-		# there are many clones, so DEC is not a safe bet
-		basic_machine=pdp10-unknown
-		;;
 	pdp11)
 		basic_machine=pdp11-dec
@@ -1306,7 +1249,4 @@
 		basic_machine=sh-unknown
 		;;
-	sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v)
-		basic_machine=sparc-sun
-		;;
 	cydra)
 		basic_machine=cydra-cydrome
@@ -1328,5 +1268,5 @@
 		;;
 	*)
-		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+		echo Invalid configuration \`"$1"\': machine \`"$basic_machine"\' not recognized 1>&2
 		exit 1
 		;;
@@ -1336,8 +1276,8 @@
 case $basic_machine in
 	*-digital*)
-		basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'`
+		basic_machine=`echo "$basic_machine" | sed 's/digital.*/dec/'`
 		;;
 	*-commodore*)
-		basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'`
+		basic_machine=`echo "$basic_machine" | sed 's/commodore.*/cbm/'`
 		;;
 	*)
@@ -1347,195 +1287,244 @@
 # Decode manufacturer-specific aliases for certain operating systems.
 
-if [ x"$os" != x"" ]
+if [ x$os != x ]
 then
 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
-		;;
-	-solaris1 | -solaris1.*)
+	# 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
+		;;
+	bluegene*)
+		os=cnk
+		;;
+	solaris1 | solaris1.*)
 		os=`echo $os | sed -e 's|solaris1|sunos4|'`
 		;;
-	-solaris)
-		os=-solaris2
-		;;
-	-svr4*)
-		os=-sysv4
-		;;
-	-unixware*)
-		os=-sysv4.2uw
-		;;
-	-gnu/linux*)
+	solaris)
+		os=solaris2
+		;;
+	unixware*)
+		os=sysv4.2uw
+		;;
+	gnu/linux*)
 		os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
 		;;
-	# First accept the basic system types.
+	# 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/'`
+		;;
+	sco3.2v[4-9]* | sco5v6*)
+		# Don't forget version if it is 3.2v4 or newer.
+		;;
+	scout)
+		# Don't match below
+		;;
+	sco*)
+		os=sco3.2v2
+		;;
+	psos*)
+		os=psos
+		;;
+	# 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* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
-	      | -bitrig* | -openbsd* | -solidbsd* \
-	      | -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* \
-	      | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
-	      | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \
-	      | -linux-newlib* | -linux-musl* | -linux-uclibc* \
-	      | -uxpv* | -beos* | -mpeix* | -udk* | -moxiebox* \
-	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
-	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
-	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
-	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
-	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
-	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
-	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* | -tirtos*)
+	# 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* | esix* | 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* \
+	     | 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* | hcos* \
+	     | chorusrdb* | cegcc* | glidix* \
+	     | cygwin* | msys* | pe* | 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*)
+	qnx*)
 		case $basic_machine in
 		    x86-* | i*86-*)
 			;;
 		    *)
-			os=-nto$os
+			os=nto-$os
 			;;
 		esac
 		;;
-	-nto-qnx*)
-		;;
-	-nto*)
+	hiux*)
+		os=hiuxwe2
+		;;
+	nto-qnx*)
+		;;
+	nto*)
 		os=`echo $os | sed -e 's|nto|nto-qnx|'`
 		;;
-	-sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
-	      | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \
-	      | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
-		;;
-	-mac*)
-		os=`echo $os | sed -e 's|mac|macos|'`
-		;;
-	-linux-dietlibc)
-		os=-linux-dietlibc
-		;;
-	-linux*)
+	sim | xray | os68k* | v88r* \
+	    | windows* | osx | abug | netware* | os9* \
+	    | macos* | mpw* | magic* | mmixware* | mon960* | lnews*)
+		;;
+	linux-dietlibc)
+		os=linux-dietlibc
+		;;
+	linux*)
 		os=`echo $os | sed -e 's|linux|linux-gnu|'`
 		;;
-	-sunos5*)
-		os=`echo $os | sed -e 's|sunos5|solaris2|'`
-		;;
-	-sunos6*)
-		os=`echo $os | sed -e 's|sunos6|solaris3|'`
-		;;
-	-opened*)
-		os=-openedition
-		;;
-	-os400*)
-		os=-os400
-		;;
-	-wince*)
-		os=-wince
-		;;
-	-osfrose*)
-		os=-osfrose
-		;;
-	-osf*)
-		os=-osf
-		;;
-	-utek*)
-		os=-bsd
-		;;
-	-dynix*)
-		os=-bsd
-		;;
-	-acis*)
-		os=-aos
-		;;
-	-atheos*)
-		os=-atheos
-		;;
-	-syllable*)
-		os=-syllable
-		;;
-	-386bsd)
-		os=-bsd
-		;;
-	-ctix* | -uts*)
-		os=-sysv
-		;;
-	-nova*)
-		os=-rtmk-nova
-		;;
-	-ns2 )
-		os=-nextstep2
-		;;
-	-nsk*)
-		os=-nsk
+	lynx*178)
+		os=lynxos178
+		;;
+	lynx*5)
+		os=lynxos5
+		;;
+	lynx*)
+		os=lynxos
+		;;
+	mac*)
+		os=`echo "$os" | sed -e 's|mac|macos|'`
+		;;
+	opened*)
+		os=openedition
+		;;
+	os400*)
+		os=os400
+		;;
+	sunos5*)
+		os=`echo "$os" | sed -e 's|sunos5|solaris2|'`
+		;;
+	sunos6*)
+		os=`echo "$os" | sed -e 's|sunos6|solaris3|'`
+		;;
+	wince*)
+		os=wince
+		;;
+	utek*)
+		os=bsd
+		;;
+	dynix*)
+		os=bsd
+		;;
+	acis*)
+		os=aos
+		;;
+	atheos*)
+		os=atheos
+		;;
+	syllable*)
+		os=syllable
+		;;
+	386bsd)
+		os=bsd
+		;;
+	ctix* | uts*)
+		os=sysv
+		;;
+	nova*)
+		os=rtmk-nova
+		;;
+	ns2)
+		os=nextstep2
+		;;
+	nsk*)
+		os=nsk
 		;;
 	# Preserve the version number of sinix5.
-	-sinix5.*)
+	sinix5.*)
 		os=`echo $os | sed -e 's|sinix|sysv|'`
 		;;
-	-sinix*)
-		os=-sysv4
-		;;
-	-tpf*)
-		os=-tpf
-		;;
-	-triton*)
-		os=-sysv3
-		;;
-	-oss*)
-		os=-sysv3
-		;;
-	-svr4)
-		os=-sysv4
-		;;
-	-svr3)
-		os=-sysv3
-		;;
-	-sysvr4)
-		os=-sysv4
-		;;
-	# This must come after -sysvr4.
-	-sysv*)
-		;;
-	-ose*)
-		os=-ose
-		;;
-	-es1800*)
-		os=-ose
-		;;
-	-xenix)
-		os=-xenix
-		;;
-	-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
-		os=-mint
-		;;
-	-aros*)
-		os=-aros
-		;;
-	-zvmoe)
-		os=-zvmoe
-		;;
-	-dicos*)
-		os=-dicos
-		;;
-	-nacl*)
-		;;
-	-none)
+	sinix*)
+		os=sysv4
+		;;
+	tpf*)
+		os=tpf
+		;;
+	triton*)
+		os=sysv3
+		;;
+	oss*)
+		os=sysv3
+		;;
+	svr4*)
+		os=sysv4
+		;;
+	svr3)
+		os=sysv3
+		;;
+	sysvr4)
+		os=sysv4
+		;;
+	# This must come after sysvr4.
+	sysv*)
+		;;
+	ose*)
+		os=ose
+		;;
+	*mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
+		os=mint
+		;;
+	zvmoe)
+		os=zvmoe
+		;;
+	dicos*)
+		os=dicos
+		;;
+	pikeos*)
+		# Until real need of OS specific support for
+		# particular features comes up, bare metal
+		# configurations are quite functional.
+		case $basic_machine in
+		    arm*)
+			os=eabi
+			;;
+		    *)
+			os=elf
+			;;
+		esac
+		;;
+	nacl*)
+		;;
+	ios)
+		;;
+	none)
+		;;
+	*-eabi)
 		;;
 	*)
-		# Get rid of the `-' at the beginning of $os.
-		os=`echo $os | sed 's/[^-]*-//'`
-		echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
+		echo Invalid configuration \`"$1"\': system \`"$os"\' not recognized 1>&2
 		exit 1
 		;;
@@ -1555,174 +1544,177 @@
 case $basic_machine in
 	score-*)
-		os=-elf
+		os=elf
 		;;
 	spu-*)
-		os=-elf
+		os=elf
 		;;
 	*-acorn)
-		os=-riscix1.2
+		os=riscix1.2
 		;;
 	arm*-rebel)
-		os=-linux
+		os=linux
 		;;
 	arm*-semi)
-		os=-aout
+		os=aout
 		;;
 	c4x-* | tic4x-*)
-		os=-coff
+		os=coff
 		;;
 	c8051-*)
-		os=-elf
+		os=elf
+		;;
+	clipper-intergraph)
+		os=clix
 		;;
 	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
 		;;
 	*-be)
-		os=-beos
-		;;
-	*-haiku)
-		os=-haiku
+		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
-		;;
-	*-next )
-		os=-nextstep
+		os=luna
+		;;
+	*-next)
+		os=nextstep
 		;;
 	*-sequent)
-		os=-ptx
+		os=ptx
 		;;
 	*-crds)
-		os=-unos
+		os=unos
 		;;
 	*-ns)
-		os=-genix
+		os=genix
 		;;
 	i370-*)
-		os=-mvs
-		;;
-	*-next)
-		os=-nextstep3
+		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
+		os=mint
+		;;
+	*-wrs)
+		os=vxworks
 		;;
 	*)
-		os=-none
+		os=none
 		;;
 esac
@@ -1735,77 +1727,80 @@
 	*-unknown)
 		case $os in
-			-riscix*)
+			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
 				;;
-			-mvs* | -opened*)
+			clix*)
+				vendor=intergraph
+				;;
+			mvs* | opened*)
 				vendor=ibm
 				;;
-			-os400*)
+			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/"`
+		basic_machine=`echo "$basic_machine" | sed "s/unknown/$vendor/"`
 		;;
 esac
 
-echo $basic_machine$os
+echo "$basic_machine-$os"
 exit
 
 # Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
+# eval: (add-hook 'before-save-hook 'time-stamp)
 # time-stamp-start: "timestamp='"
 # time-stamp-format: "%:y-%02m-%02d"
