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kc3-lang/automake/lib/config.sub

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  • Author : Paul Eggert
    Date : 2025-01-01 14:28:48
    Hash : 8da33f8f
    Message : make fetch

  • lib/config.sub
  • #! /bin/sh
    # Configuration validation subroutine script.
    #   Copyright 1992-2024 Free Software Foundation, Inc.
    
    # shellcheck disable=SC2006,SC2268,SC2162 # see below for rationale
    
    timestamp='2024-05-27'
    
    # 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
    # (at your option) any later version.
    #
    # 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 <https://www.gnu.org/licenses/>.
    #
    # As a special exception to the GNU General Public License, if you
    # distribute this file as part of a program that contains a
    # configuration script generated by Autoconf, you may include it under
    # the same distribution terms that you use for the rest of that
    # program.  This Exception is an additional permission under section 7
    # of the GNU General Public License, version 3 ("GPLv3").
    
    
    # Please send patches to <config-patches@gnu.org>.
    #
    # Configuration subroutine to validate and canonicalize a configuration type.
    # Supply the specified configuration type as an argument.
    # If it is invalid, we print an error message on stderr and exit with code 1.
    # 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
    
    # This file is supposed to be the same for all GNU packages
    # and recognize all the CPU types, system types and aliases
    # that are meaningful with *any* GNU software.
    # Each package is responsible for reporting which valid configurations
    # it does not support.  The user should be able to distinguish
    # a failure to support a valid configuration from a meaningless
    # configuration.
    
    # The goal of this file is to map all the various variations of a given
    # machine specification into a single specification in the form:
    #	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
    # or in some cases, the newer four-part form:
    #	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="\
    Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS
    
    Canonicalize a configuration name.
    
    Options:
      -h, --help         print this help, then exit
      -t, --time-stamp   print date of last modification, then exit
      -v, --version      print version number, then exit
    
    Report bugs and patches to <config-patches@gnu.org>."
    
    version="\
    GNU config.sub ($timestamp)
    
    Copyright 1992-2024 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."
    
    help="
    Try '$me --help' for more information."
    
    # Parse command line
    while test $# -gt 0 ; do
      case $1 in
        --time-stamp | --time* | -t )
           echo "$timestamp" ; exit ;;
        --version | -v )
           echo "$version" ; exit ;;
        --help | --h* | -h )
           echo "$usage"; exit ;;
        -- )     # Stop option processing
           shift; break ;;
        - )	# Use stdin as input.
           break ;;
        -* )
           echo "$me: invalid option $1$help" >&2
           exit 1 ;;
    
        *local*)
           # First pass through any local machine types.
           echo "$1"
           exit ;;
    
        * )
           break ;;
      esac
    done
    
    case $# in
     0) echo "$me: missing argument$help" >&2
        exit 1;;
     1) ;;
     *) echo "$me: too many arguments$help" >&2
        exit 1;;
    esac
    
    # Split fields of configuration type
    saved_IFS=$IFS
    IFS="-" read field1 field2 field3 field4 <<EOF
    $1
    EOF
    IFS=$saved_IFS
    
    # Separate into logical components for further validation
    case $1 in
    	*-*-*-*-*)
    		echo "Invalid configuration '$1': more than four components" >&2
    		exit 1
    		;;
    	*-*-*-*)
    		basic_machine=$field1-$field2
    		basic_os=$field3-$field4
    		;;
    	*-*-*)
    		# Ambiguous whether COMPANY is present, or skipped and KERNEL-OS is two
    		# parts
    		maybe_os=$field2-$field3
    		case $maybe_os in
    			  cloudabi*-eabi* \
    			| kfreebsd*-gnu* \
    			| knetbsd*-gnu* \
    			| kopensolaris*-gnu* \
    			| linux-* \
    			| managarm-* \
    			| netbsd*-eabi* \
    			| netbsd*-gnu* \
    			| nto-qnx* \
    			| os2-emx* \
    			| rtmk-nova* \
    			| storm-chaos* \
    			| uclinux-gnu* \
    			| uclinux-uclibc* \
    			| windows-* )
    				basic_machine=$field1
    				basic_os=$maybe_os
    				;;
    			android-linux)
    				basic_machine=$field1-unknown
    				basic_os=linux-android
    				;;
    			*)
    				basic_machine=$field1-$field2
    				basic_os=$field3
    				;;
    		esac
    		;;
    	*-*)
    		case $field1-$field2 in
    			# Shorthands that happen to contain a single dash
    			convex-c[12] | convex-c3[248])
    				basic_machine=$field2-convex
    				basic_os=
    				;;
    			decstation-3100)
    				basic_machine=mips-dec
    				basic_os=
    				;;
    			*-*)
    				# Second component is usually, but not always the OS
    				case $field2 in
    					# Do not treat sunos as a manufacturer
    					sun*os*)
    						basic_machine=$field1
    						basic_os=$field2
    						;;
    					# Manufacturers
    					  3100* \
    					| 32* \
    					| 3300* \
    					| 3600* \
    					| 7300* \
    					| acorn \
    					| altos* \
    					| apollo \
    					| apple \
    					| atari \
    					| att* \
    					| axis \
    					| be \
    					| bull \
    					| cbm \
    					| ccur \
    					| cisco \
    					| commodore \
    					| convergent* \
    					| convex* \
    					| cray \
    					| crds \
    					| dec* \
    					| delta* \
    					| dg \
    					| digital \
    					| dolphin \
    					| encore* \
    					| gould \
    					| harris \
    					| highlevel \
    					| hitachi* \
    					| hp \
    					| ibm* \
    					| intergraph \
    					| isi* \
    					| knuth \
    					| masscomp \
    					| microblaze* \
    					| mips* \
    					| motorola* \
    					| ncr* \
    					| news \
    					| next \
    					| ns \
    					| oki \
    					| omron* \
    					| pc533* \
    					| rebel \
    					| rom68k \
    					| rombug \
    					| semi \
    					| sequent* \
    					| siemens \
    					| sgi* \
    					| siemens \
    					| sim \
    					| sni \
    					| sony* \
    					| stratus \
    					| sun \
    					| sun[234]* \
    					| tektronix \
    					| tti* \
    					| ultra \
    					| unicom* \
    					| wec \
    					| winbond \
    					| wrs)
    						basic_machine=$field1-$field2
    						basic_os=
    						;;
    					zephyr*)
    						basic_machine=$field1-unknown
    						basic_os=$field2
    						;;
    					*)
    						basic_machine=$field1
    						basic_os=$field2
    						;;
    				esac
    			;;
    		esac
    		;;
    	*)
    		# 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
    				;;
    			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
    		;;
    esac
    
    # Decode 1-component or ad-hoc basic machines
    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
    		;;
    	op50n)
    		cpu=hppa1.1
    		vendor=oki
    		;;
    	op60c)
    		cpu=hppa1.1
    		vendor=oki
    		;;
    	ibm*)
    		cpu=i370
    		vendor=ibm
    		;;
    	orion105)
    		cpu=clipper
    		vendor=highlevel
    		;;
    	mac | mpw | mac-mpw)
    		cpu=m68k
    		vendor=apple
    		;;
    	pmac | pmac-mpw)
    		cpu=powerpc
    		vendor=apple
    		;;
    
    	# Recognize the various machine names and aliases which stand
    	# for a CPU type and a company and sometimes even an OS.
    	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
    		cpu=m68000
    		vendor=att
    		;;
    	3b*)
    		cpu=we32k
    		vendor=att
    		;;
    	bluegene*)
    		cpu=powerpc
    		vendor=ibm
    		basic_os=cnk
    		;;
    	decsystem10* | dec10*)
    		cpu=pdp10
    		vendor=dec
    		basic_os=tops10
    		;;
    	decsystem20* | dec20*)
    		cpu=pdp10
    		vendor=dec
    		basic_os=tops20
    		;;
    	delta | 3300 | delta-motorola | 3300-motorola | motorola-delta | motorola-3300)
    		cpu=m68k
    		vendor=motorola
    		;;
    	# This used to be dpx2*, but that gets the RS6000-based
    	# DPX/20 and the x86-based DPX/2-100 wrong.  See
    	# https://oldskool.silicium.org/stations/bull_dpx20.htm
    	# https://www.feb-patrimoine.com/english/bull_dpx2.htm
    	# https://www.feb-patrimoine.com/english/unix_and_bull.htm
    	dpx2 | dpx2[23]00 | dpx2[23]xx)
    		cpu=m68k
    		vendor=bull
    		;;
    	dpx2100 | dpx21xx)
    		cpu=i386
    		vendor=bull
    		;;
    	dpx20)
    		cpu=rs6000
    		vendor=bull
    		;;
    	encore | umax | mmax)
    		cpu=ns32k
    		vendor=encore
    		;;
    	elxsi)
    		cpu=elxsi
    		vendor=elxsi
    		basic_os=${basic_os:-bsd}
    		;;
    	fx2800)
    		cpu=i860
    		vendor=alliant
    		;;
    	genix)
    		cpu=ns32k
    		vendor=ns
    		;;
    	h3050r* | hiux*)
    		cpu=hppa1.1
    		vendor=hitachi
    		basic_os=hiuxwe2
    		;;
    	hp3k9[0-9][0-9] | hp9[0-9][0-9])
    		cpu=hppa1.0
    		vendor=hp
    		;;
    	hp9k2[0-9][0-9] | hp9k31[0-9])
    		cpu=m68000
    		vendor=hp
    		;;
    	hp9k3[2-9][0-9])
    		cpu=m68k
    		vendor=hp
    		;;
    	hp9k6[0-9][0-9] | hp6[0-9][0-9])
    		cpu=hppa1.0
    		vendor=hp
    		;;
    	hp9k7[0-79][0-9] | hp7[0-79][0-9])
    		cpu=hppa1.1
    		vendor=hp
    		;;
    	hp9k78[0-9] | hp78[0-9])
    		# FIXME: really hppa2.0-hp
    		cpu=hppa1.1
    		vendor=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
    		;;
    	hp9k8[0-9][13679] | hp8[0-9][13679])
    		cpu=hppa1.1
    		vendor=hp
    		;;
    	hp9k8[0-9][0-9] | hp8[0-9][0-9])
    		cpu=hppa1.0
    		vendor=hp
    		;;
    	i*86v32)
    		cpu=`echo "$1" | sed -e 's/86.*/86/'`
    		vendor=pc
    		basic_os=sysv32
    		;;
    	i*86v4*)
    		cpu=`echo "$1" | sed -e 's/86.*/86/'`
    		vendor=pc
    		basic_os=sysv4
    		;;
    	i*86v)
    		cpu=`echo "$1" | sed -e 's/86.*/86/'`
    		vendor=pc
    		basic_os=sysv
    		;;
    	i*86sol2)
    		cpu=`echo "$1" | sed -e 's/86.*/86/'`
    		vendor=pc
    		basic_os=solaris2
    		;;
    	j90 | j90-cray)
    		cpu=j90
    		vendor=cray
    		basic_os=${basic_os:-unicos}
    		;;
    	iris | iris4d)
    		cpu=mips
    		vendor=sgi
    		case $basic_os in
    		    irix*)
    			;;
    		    *)
    			basic_os=irix4
    			;;
    		esac
    		;;
    	miniframe)
    		cpu=m68000
    		vendor=convergent
    		;;
    	*mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
    		cpu=m68k
    		vendor=atari
    		basic_os=mint
    		;;
    	news-3600 | risc-news)
    		cpu=mips
    		vendor=sony
    		basic_os=newsos
    		;;
    	next | m*-next)
    		cpu=m68k
    		vendor=next
    		;;
    	np1)
    		cpu=np1
    		vendor=gould
    		;;
    	op50n-* | op60c-*)
    		cpu=hppa1.1
    		vendor=oki
    		basic_os=proelf
    		;;
    	pa-hitachi)
    		cpu=hppa1.1
    		vendor=hitachi
    		basic_os=hiuxwe2
    		;;
    	pbd)
    		cpu=sparc
    		vendor=tti
    		;;
    	pbb)
    		cpu=m68k
    		vendor=tti
    		;;
    	pc532)
    		cpu=ns32k
    		vendor=pc532
    		;;
    	pn)
    		cpu=pn
    		vendor=gould
    		;;
    	power)
    		cpu=power
    		vendor=ibm
    		;;
    	ps2)
    		cpu=i386
    		vendor=ibm
    		;;
    	rm[46]00)
    		cpu=mips
    		vendor=siemens
    		;;
    	rtpc | rtpc-*)
    		cpu=romp
    		vendor=ibm
    		;;
    	sde)
    		cpu=mipsisa32
    		vendor=sde
    		basic_os=${basic_os:-elf}
    		;;
    	simso-wrs)
    		cpu=sparclite
    		vendor=wrs
    		basic_os=vxworks
    		;;
    	tower | tower-32)
    		cpu=m68k
    		vendor=ncr
    		;;
    	vpp*|vx|vx-*)
    		cpu=f301
    		vendor=fujitsu
    		;;
    	w65)
    		cpu=w65
    		vendor=wdc
    		;;
    	w89k-*)
    		cpu=hppa1.1
    		vendor=winbond
    		basic_os=proelf
    		;;
    	none)
    		cpu=none
    		vendor=none
    		;;
    	leon|leon[3-9])
    		cpu=sparc
    		vendor=$basic_machine
    		;;
    	leon-*|leon[3-9]-*)
    		cpu=sparc
    		vendor=`echo "$basic_machine" | sed 's/-.*//'`
    		;;
    
    	*-*)
    		saved_IFS=$IFS
    		IFS="-" read cpu vendor <<EOF
    $basic_machine
    EOF
    		IFS=$saved_IFS
    		;;
    	# 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=$basic_machine
    		vendor=pc
    		;;
    	# These rules are duplicated from below for sake of the special case above;
    	# i.e. things that normalized to x86 arches should also default to "pc"
    	pc98)
    		cpu=i386
    		vendor=pc
    		;;
    	x64 | amd64)
    		cpu=x86_64
    		vendor=pc
    		;;
    	# Recognize the basic CPU types without company name.
    	*)
    		cpu=$basic_machine
    		vendor=unknown
    		;;
    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.
    	c[12]-convex | c[12]-unknown | c3[248]-convex | c3[248]-unknown)
    		vendor=convex
    		basic_os=${basic_os:-bsd}
    		;;
    	craynv-unknown)
    		vendor=cray
    		basic_os=${basic_os:-unicosmp}
    		;;
    	c90-unknown | c90-cray)
    		vendor=cray
    		basic_os=${basic_os:-unicos}
    		;;
    	fx80-unknown)
    		vendor=alliant
    		;;
    	romp-unknown)
    		vendor=ibm
    		;;
    	mmix-unknown)
    		vendor=knuth
    		;;
    	microblaze-unknown | microblazeel-unknown)
    		vendor=xilinx
    		;;
    	rs6000-unknown)
    		vendor=ibm
    		;;
    	vax-unknown)
    		vendor=dec
    		;;
    	pdp11-unknown)
    		vendor=dec
    		;;
    	we32k-unknown)
    		vendor=att
    		;;
    	cydra-unknown)
    		vendor=cydrome
    		;;
    	i370-ibm*)
    		vendor=ibm
    		;;
    	orion-unknown)
    		vendor=highlevel
    		;;
    	xps-unknown | xps100-unknown)
    		cpu=xps100
    		vendor=honeywell
    		;;
    
    	# 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}
    		;;
    
    	# Normalized CPU+vendor pairs that imply an OS, if not otherwise specified
    	m68k-isi)
    		basic_os=${basic_os:-sysv}
    		;;
    	m68k-sony)
    		basic_os=${basic_os:-newsos}
    		;;
    	m68k-tektronix)
    		basic_os=${basic_os:-bsd}
    		;;
    	m88k-harris)
    		basic_os=${basic_os:-sysv3}
    		;;
    	i386-bull | m68k-bull)
    		basic_os=${basic_os:-sysv3}
    		;;
    	rs6000-bull)
    		basic_os=${basic_os:-bosx}
    		;;
    	mips-sni)
    		basic_os=${basic_os:-sysv4}
    		;;
    
    	# Here we normalize CPU types irrespective of the vendor
    	amd64-*)
    		cpu=x86_64
    		;;
    	blackfin-*)
    		cpu=bfin
    		basic_os=${basic_os:-linux}
    		;;
    	c54x-*)
    		cpu=tic54x
    		;;
    	c55x-*)
    		cpu=tic55x
    		;;
    	c6x-*)
    		cpu=tic6x
    		;;
    	e500v[12]-*)
    		cpu=powerpc
    		basic_os=${basic_os}"spe"
    		;;
    	mips3*-*)
    		cpu=mips64
    		;;
    	ms1-*)
    		cpu=mt
    		;;
    	m68knommu-*)
    		cpu=m68k
    		basic_os=${basic_os:-linux}
    		;;
    	m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
    		cpu=s12z
    		;;
    	openrisc-*)
    		cpu=or32
    		;;
    	parisc-*)
    		cpu=hppa
    		basic_os=${basic_os:-linux}
    		;;
    	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
    		cpu=i586
    		;;
    	pentiumpro-* | p6-* | 6x86-* | athlon-* | athlon_*-*)
    		cpu=i686
    		;;
    	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
    		cpu=i686
    		;;
    	pentium4-*)
    		cpu=i786
    		;;
    	ppc-* | ppcbe-*)
    		cpu=powerpc
    		;;
    	ppcle-* | powerpclittle-*)
    		cpu=powerpcle
    		;;
    	ppc64-*)
    		cpu=powerpc64
    		;;
    	ppc64le-* | powerpc64little-*)
    		cpu=powerpc64le
    		;;
    	sb1-*)
    		cpu=mipsisa64sb1
    		;;
    	sb1el-*)
    		cpu=mipsisa64sb1el
    		;;
    	sh5e[lb]-*)
    		cpu=`echo "$cpu" | sed 's/^\(sh.\)e\(.\)$/\1\2e/'`
    		;;
    	spur-*)
    		cpu=spur
    		;;
    	strongarm-* | thumb-*)
    		cpu=arm
    		;;
    	tx39-*)
    		cpu=mipstx39
    		;;
    	tx39el-*)
    		cpu=mipstx39el
    		;;
    	xscale-* | xscalee[bl]-*)
    		cpu=`echo "$cpu" | sed 's/^xscale/arm/'`
    		;;
    	arm64-* | aarch64le-*)
    		cpu=aarch64
    		;;
    
    	# Recognize the canonical CPU Types that limit and/or modify the
    	# company names they are paired with.
    	cr16-*)
    		basic_os=${basic_os:-elf}
    		;;
    	crisv32-* | etraxfs*-*)
    		cpu=crisv32
    		vendor=axis
    		;;
    	cris-* | etrax*-*)
    		cpu=cris
    		vendor=axis
    		;;
    	crx-*)
    		basic_os=${basic_os:-elf}
    		;;
    	neo-tandem)
    		cpu=neo
    		vendor=tandem
    		;;
    	nse-tandem)
    		cpu=nse
    		vendor=tandem
    		;;
    	nsr-tandem)
    		cpu=nsr
    		vendor=tandem
    		;;
    	nsv-tandem)
    		cpu=nsv
    		vendor=tandem
    		;;
    	nsx-tandem)
    		cpu=nsx
    		vendor=tandem
    		;;
    	mipsallegrexel-sony)
    		cpu=mipsallegrexel
    		vendor=sony
    		;;
    	tile*-*)
    		basic_os=${basic_os:-linux-gnu}
    		;;
    
    	*)
    		# Recognize the canonical CPU types that are allowed with any
    		# company name.
    		case $cpu in
    			  1750a \
    			| 580 \
    			| [cjt]90 \
    			| a29k \
    			| aarch64 \
    			| aarch64_be \
    			| aarch64c \
    			| abacus \
    			| alpha \
    			| alpha64 \
    			| alpha64ev56 \
    			| alpha64ev6[78] \
    			| alpha64ev[4-8] \
    			| alpha64pca5[67] \
    			| alphaev56 \
    			| alphaev6[78] \
    			| alphaev[4-8] \
    			| alphapca5[67] \
    			| am33_2.0 \
    			| amdgcn \
    			| arc \
    			| arc32 \
    			| arc64 \
    			| arceb \
    			| arm \
    			| arm64e \
    			| arm64ec \
    			| arm[lb]e \
    			| arme[lb] \
    			| armv* \
    			| asmjs \
    			| avr \
    			| avr32 \
    			| ba \
    			| be32 \
    			| be64 \
    			| bfin \
    			| bpf \
    			| bs2000 \
    			| c30 \
    			| c4x \
    			| c8051 \
    			| c[123]* \
    			| clipper \
    			| craynv \
    			| csky \
    			| cydra \
    			| d10v \
    			| d30v \
    			| dlx \
    			| dsp16xx \
    			| e2k \
    			| elxsi \
    			| epiphany \
    			| f30[01] \
    			| f700 \
    			| fido \
    			| fr30 \
    			| frv \
    			| ft32 \
    			| fx80 \
    			| h8300 \
    			| h8500 \
    			| hexagon \
    			| hppa \
    			| hppa1.[01] \
    			| hppa2.0 \
    			| hppa2.0[nw] \
    			| hppa64 \
    			| i*86 \
    			| i370 \
    			| i860 \
    			| i960 \
    			| ia16 \
    			| ia64 \
    			| ip2k \
    			| iq2000 \
    			| javascript \
    			| k1om \
    			| kvx \
    			| le32 \
    			| le64 \
    			| lm32 \
    			| loongarch32 \
    			| loongarch64 \
    			| m32c \
    			| m32r \
    			| m32rle \
    			| m5200 \
    			| m68000 \
    			| m680[012346]0 \
    			| m6811 \
    			| m6812 \
    			| m68360 \
    			| m683?2 \
    			| m68hc11 \
    			| m68hc12 \
    			| m68hcs12x \
    			| m68k \
    			| m88110 \
    			| m88k \
    			| maxq \
    			| mb \
    			| mcore \
    			| mep \
    			| metag \
    			| microblaze \
    			| microblazeel \
    			| mips* \
    			| mmix \
    			| mn10200 \
    			| mn10300 \
    			| moxie \
    			| msp430 \
    			| mt \
    			| nanomips* \
    			| nds32 \
    			| nds32be \
    			| nds32le \
    			| nfp \
    			| nios \
    			| nios2 \
    			| nios2eb \
    			| nios2el \
    			| none \
    			| np1 \
    			| ns16k \
    			| ns32k \
    			| nvptx \
    			| open8 \
    			| or1k* \
    			| or32 \
    			| orion \
    			| pdp10 \
    			| pdp11 \
    			| picochip \
    			| pj \
    			| pjl \
    			| pn \
    			| power \
    			| powerpc \
    			| powerpc64 \
    			| powerpc64le \
    			| powerpcle \
    			| powerpcspe \
    			| pru \
    			| pyramid \
    			| riscv \
    			| riscv32 \
    			| riscv32be \
    			| riscv64 \
    			| riscv64be \
    			| rl78 \
    			| romp \
    			| rs6000 \
    			| rx \
    			| s390 \
    			| s390x \
    			| score \
    			| sh \
    			| sh64 \
    			| sh64le \
    			| sh[12345][lb]e \
    			| sh[1234] \
    			| sh[1234]e[lb] \
    			| sh[23]e \
    			| sh[23]ele \
    			| sh[24]a \
    			| sh[24]ae[lb] \
    			| sh[lb]e \
    			| she[lb] \
    			| shl \
    			| sparc \
    			| sparc64 \
    			| sparc64b \
    			| sparc64v \
    			| sparc86x \
    			| sparclet \
    			| sparclite \
    			| sparcv8 \
    			| sparcv9 \
    			| sparcv9b \
    			| sparcv9v \
    			| spu \
    			| sv1 \
    			| sx* \
    			| tahoe \
    			| thumbv7* \
    			| tic30 \
    			| tic4x \
    			| tic54x \
    			| tic55x \
    			| tic6x \
    			| tic80 \
    			| tron \
    			| ubicom32 \
    			| v70 \
    			| v810 \
    			| v850 \
    			| v850e \
    			| v850e1 \
    			| v850e2 \
    			| v850e2v3 \
    			| v850es \
    			| vax \
    			| vc4 \
    			| visium \
    			| w65 \
    			| wasm32 \
    			| wasm64 \
    			| we32k \
    			| x86 \
    			| x86_64 \
    			| xc16x \
    			| xgate \
    			| xps100 \
    			| xstormy16 \
    			| xtensa* \
    			| ymp \
    			| z80 \
    			| z8k)
    				;;
    
    			*)
    				echo "Invalid configuration '$1': machine '$cpu-$vendor' not recognized" 1>&2
    				exit 1
    				;;
    		esac
    		;;
    esac
    
    # Here we canonicalize certain aliases for manufacturers.
    case $vendor in
    	digital*)
    		vendor=dec
    		;;
    	commodore*)
    		vendor=cbm
    		;;
    	*)
    		;;
    esac
    
    # Decode manufacturer-specific aliases for certain operating systems.
    
    if test x"$basic_os" != x
    then
    
    # First recognize some ad-hoc cases, or perhaps split kernel-os, or else just
    # set os.
    obj=
    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|'`
    		;;
    	*-*)
    		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|'`
    		;;
    	managarm*)
    		kernel=managarm
    		os=`echo "$basic_os" | sed -e 's|managarm|mlibc|'`
    		;;
    	*)
    		kernel=
    		os=$basic_os
    		;;
    esac
    
    # Now, normalize the OS (knowing we just have one component, it's not a kernel,
    # etc.)
    case $os in
    	# First match some system type aliases that might get confused
    	# with valid system types.
    	# solaris* is a basic system type, with this one exception.
    	auroraux)
    		os=auroraux
    		;;
    	bluegene*)
    		os=cnk
    		;;
    	solaris1 | solaris1.*)
    		os=`echo "$os" | sed -e 's|solaris1|sunos4|'`
    		;;
    	solaris)
    		os=solaris2
    		;;
    	unixware*)
    		os=sysv4.2uw
    		;;
    	# The marketing names for NeXT's operating systems were
    	# NeXTSTEP, NeXTSTEP 2, OpenSTEP 3, OpenSTEP 4.  'openstep' is
    	# mapped to 'openstep3', but 'openstep1' and 'openstep2' are
    	# mapped to 'nextstep' and 'nextstep2', consistent with the
    	# treatment of SunOS/Solaris.
    	ns | ns1 | nextstep | nextstep1 | openstep1)
    		os=nextstep
    		;;
    	ns2 | nextstep2 | openstep2)
    		os=nextstep2
    		;;
    	ns3 | nextstep3 | openstep | openstep3)
    		os=openstep3
    		;;
    	ns4 | nextstep4 | openstep4)
    		os=openstep4
    		;;
    	# 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 "$os" | sed -e 's/sco3.2./sco3.2v/'`
    		;;
    	sco*v* | scout)
    		# Don't match below
    		;;
    	sco*)
    		os=sco3.2v2
    		;;
    	psos*)
    		os=psos
    		;;
    	qnx*)
    		os=qnx
    		;;
    	hiux*)
    		os=hiuxwe2
    		;;
    	lynx*178)
    		os=lynxos178
    		;;
    	lynx*5)
    		os=lynxos5
    		;;
    	lynxos*)
    		# don't get caught up in next wildcard
    		;;
    	lynx*)
    		os=lynxos
    		;;
    	mac[0-9]*)
    		os=`echo "$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
    		vendor=`echo "$vendor" | sed -e 's|^unknown$|tektronix|'`
    		;;
    	dynix*)
    		os=bsd
    		;;
    	acis*)
    		os=aos
    		;;
    	atheos*)
    		os=atheos
    		;;
    	syllable*)
    		os=syllable
    		;;
    	386bsd)
    		os=bsd
    		;;
    	ctix*)
    		os=sysv
    		vendor=`echo "$vendor" | sed -e 's|^unknown$|convergent|'`
    		;;
    	uts*)
    		os=sysv
    		;;
    	nova*)
    		kernel=rtmk
    		os=nova
    		;;
    	# Preserve the version number of sinix5.
    	sinix5.*)
    		os=`echo "$os" | sed -e 's|sinix|sysv|'`
    		vendor=`echo "$vendor" | sed -e 's|^unknown$|sni|'`
    		;;
    	sinix*)
    		os=sysv4
    		vendor=`echo "$vendor" | sed -e 's|^unknown$|sni|'`
    		;;
    	tpf*)
    		os=tpf
    		;;
    	triton*)
    		os=sysv3
    		;;
    	oss*)
    		os=sysv3
    		;;
    	svr4*)
    		os=sysv4
    		;;
    	svr3)
    		os=sysv3
    		;;
    	sysvr4)
    		os=sysv4
    		;;
    	ose*)
    		os=ose
    		;;
    	*mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
    		os=mint
    		;;
    	dicos*)
    		os=dicos
    		;;
    	pikeos*)
    		# Until real need of OS specific support for
    		# particular features comes up, bare metal
    		# configurations are quite functional.
    		case $cpu in
    		    arm*)
    			os=eabi
    			;;
    		    *)
    			os=
    			obj=elf
    			;;
    		esac
    		;;
    	aout* | coff* | elf* | pe*)
    		# These are machine code file formats, not OSes
    		obj=$os
    		os=
    		;;
    	*)
    		# No normalization, but not necessarily accepted, that comes below.
    		;;
    esac
    
    else
    
    # Here we handle the default operating systems that come with various machines.
    # The value should be what the vendor currently ships out the door with their
    # machine or put another way, the most popular os provided with the machine.
    
    # Note that if you're going to try to match "-MANUFACTURER" here (say,
    # "-sun"), then you have to tell the case statement up towards the top
    # that MANUFACTURER isn't an operating system.  Otherwise, code above
    # will signal an error saying that MANUFACTURER isn't an operating
    # system, and we'll never get to this point.
    
    kernel=
    obj=
    case $cpu-$vendor in
    	score-*)
    		os=
    		obj=elf
    		;;
    	spu-*)
    		os=
    		obj=elf
    		;;
    	*-acorn)
    		os=riscix1.2
    		;;
    	arm*-rebel)
    		kernel=linux
    		os=gnu
    		;;
    	arm*-semi)
    		os=
    		obj=aout
    		;;
    	c4x-* | tic4x-*)
    		os=
    		obj=coff
    		;;
    	c8051-*)
    		os=
    		obj=elf
    		;;
    	clipper-intergraph)
    		os=clix
    		;;
    	hexagon-*)
    		os=
    		obj=elf
    		;;
    	tic54x-*)
    		os=
    		obj=coff
    		;;
    	tic55x-*)
    		os=
    		obj=coff
    		;;
    	tic6x-*)
    		os=
    		obj=coff
    		;;
    	# This must come before the *-dec entry.
    	pdp10-*)
    		os=tops20
    		;;
    	pdp11-*)
    		os=none
    		;;
    	*-dec | vax-*)
    		os=ultrix4.2
    		;;
    	m68*-apollo)
    		os=domain
    		;;
    	i386-sun)
    		os=sunos4.0.2
    		;;
    	m68000-sun)
    		os=sunos3
    		;;
    	m68*-cisco)
    		os=
    		obj=aout
    		;;
    	mep-*)
    		os=
    		obj=elf
    		;;
    	# The -sgi and -siemens entries must be before the mips- entry
    	# or we get the wrong os.
    	*-sgi)
    		os=irix
    		;;
    	*-siemens)
    		os=sysv4
    		;;
    	mips*-cisco)
    		os=
    		obj=elf
    		;;
    	mips*-*|nanomips*-*)
    		os=
    		obj=elf
    		;;
    	or32-*)
    		os=
    		obj=coff
    		;;
    	# This must be before the sparc-* entry or we get the wrong os.
    	*-tti)
    		os=sysv3
    		;;
    	sparc-* | *-sun)
    		os=sunos4.1.1
    		;;
    	pru-*)
    		os=
    		obj=elf
    		;;
    	*-be)
    		os=beos
    		;;
    	*-ibm)
    		os=aix
    		;;
    	*-knuth)
    		os=mmixware
    		;;
    	*-wec)
    		os=proelf
    		;;
    	*-winbond)
    		os=proelf
    		;;
    	*-oki)
    		os=proelf
    		;;
    	*-hp)
    		os=hpux
    		;;
    	*-hitachi)
    		os=hiuxwe2
    		;;
    	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
    		os=sysv
    		;;
    	*-cbm)
    		os=amigaos
    		;;
    	*-dg)
    		os=dgux
    		;;
    	*-dolphin)
    		os=sysv3
    		;;
    	m68k-ccur)
    		os=rtu
    		;;
    	m88k-omron*)
    		os=luna
    		;;
    	*-next)
    		os=nextstep
    		;;
    	*-sequent)
    		os=ptx
    		;;
    	*-crds)
    		os=unos
    		;;
    	*-ns)
    		os=genix
    		;;
    	i370-*)
    		os=mvs
    		;;
    	*-gould)
    		os=sysv
    		;;
    	*-highlevel)
    		os=bsd
    		;;
    	*-encore)
    		os=bsd
    		;;
    	*-masscomp)
    		os=rtu
    		;;
    	f30[01]-fujitsu | f700-fujitsu)
    		os=uxpv
    		;;
    	*-rom68k)
    		os=
    		obj=coff
    		;;
    	*-*bug)
    		os=
    		obj=coff
    		;;
    	*-apple)
    		os=macos
    		;;
    	*-atari*)
    		os=mint
    		;;
    	*-wrs)
    		os=vxworks
    		;;
    	*)
    		os=none
    		;;
    esac
    
    fi
    
    # Now, validate our (potentially fixed-up) individual pieces (OS, OBJ).
    
    case $os in
    	# Sometimes we do "kernel-libc", so those need to count as OSes.
    	llvm* | musl* | newlib* | relibc* | uclibc*)
    		;;
    	# Likewise for "kernel-abi"
    	eabi* | gnueabi*)
    		;;
    	# VxWorks passes extra cpu info in the 4th filed.
    	simlinux | simwindows | spe)
    		;;
    	# See `case $cpu-$os` validation below
    	ghcjs)
    		;;
    	# Now accept the basic system types.
    	# Each alternative MUST end in a * to match a version number.
    	  abug \
    	| aix* \
    	| amdhsa* \
    	| amigados* \
    	| amigaos* \
    	| android* \
    	| aof* \
    	| aos* \
    	| aros* \
    	| atheos* \
    	| auroraux* \
    	| aux* \
    	| beos* \
    	| bitrig* \
    	| bme* \
    	| bosx* \
    	| bsd* \
    	| cegcc* \
    	| chorusos* \
    	| chorusrdb* \
    	| clix* \
    	| cloudabi* \
    	| cnk* \
    	| conix* \
    	| cos* \
    	| cxux* \
    	| cygwin* \
    	| darwin* \
    	| dgux* \
    	| dicos* \
    	| dnix* \
    	| domain* \
    	| dragonfly* \
    	| drops* \
    	| ebmon* \
    	| ecoff* \
    	| ekkobsd* \
    	| emscripten* \
    	| emx* \
    	| es* \
    	| fiwix* \
    	| freebsd* \
    	| fuchsia* \
    	| genix* \
    	| genode* \
    	| glidix* \
    	| gnu* \
    	| go32* \
    	| haiku* \
    	| hcos* \
    	| hiux* \
    	| hms* \
    	| hpux* \
    	| ieee* \
    	| interix* \
    	| ios* \
    	| iris* \
    	| irix* \
    	| ironclad* \
    	| isc* \
    	| its* \
    	| l4re* \
    	| libertybsd* \
    	| lites* \
    	| lnews* \
    	| luna* \
    	| lynxos* \
    	| mach* \
    	| macos* \
    	| magic* \
    	| mbr* \
    	| midipix* \
    	| midnightbsd* \
    	| mingw32* \
    	| mingw64* \
    	| minix* \
    	| mint* \
    	| mirbsd* \
    	| mks* \
    	| mlibc* \
    	| mmixware* \
    	| mon960* \
    	| morphos* \
    	| moss* \
    	| moxiebox* \
    	| mpeix* \
    	| mpw* \
    	| msdos* \
    	| msys* \
    	| mvs* \
    	| nacl* \
    	| netbsd* \
    	| netware* \
    	| newsos* \
    	| nextstep* \
    	| nindy* \
    	| nonstopux* \
    	| nova* \
    	| nsk* \
    	| nucleus* \
    	| nx6 \
    	| nx7 \
    	| oabi* \
    	| ohos* \
    	| onefs* \
    	| openbsd* \
    	| openedition* \
    	| openstep* \
    	| os108* \
    	| os2* \
    	| os400* \
    	| os68k* \
    	| os9* \
    	| ose* \
    	| osf* \
    	| oskit* \
    	| osx* \
    	| palmos* \
    	| phoenix* \
    	| plan9* \
    	| powermax* \
    	| powerunix* \
    	| proelf* \
    	| psos* \
    	| psp* \
    	| ptx* \
    	| pw32* \
    	| qnx* \
    	| rdos* \
    	| redox* \
    	| rhapsody* \
    	| riscix* \
    	| riscos* \
    	| rtems* \
    	| rtmk* \
    	| rtu* \
    	| scout* \
    	| secbsd* \
    	| sei* \
    	| serenity* \
    	| sim* \
    	| skyos* \
    	| solaris* \
    	| solidbsd* \
    	| sortix* \
    	| storm-chaos* \
    	| sunos \
    	| sunos[34]* \
    	| superux* \
    	| syllable* \
    	| sym* \
    	| sysv* \
    	| tenex* \
    	| tirtos* \
    	| toppers* \
    	| tops10* \
    	| tops20* \
    	| tpf* \
    	| tvos* \
    	| twizzler* \
    	| uclinux* \
    	| udi* \
    	| udk* \
    	| ultrix* \
    	| unicos* \
    	| uniplus* \
    	| unleashed* \
    	| unos* \
    	| uwin* \
    	| uxpv* \
    	| v88r* \
    	|*vms* \
    	| vos* \
    	| vsta* \
    	| vxsim* \
    	| vxworks* \
    	| wasi* \
    	| watchos* \
    	| wince* \
    	| windiss* \
    	| windows* \
    	| winnt* \
    	| xenix* \
    	| xray* \
    	| zephyr* \
    	| zvmoe* )
    		;;
    	# 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.
    		;;
    	# This refers to builds using the UEFI calling convention
    	# (which depends on the architecture) and PE file format.
    	# Note that this is both a different calling convention and
    	# different file format than that of GNU-EFI
    	# (x86_64-w64-mingw32).
    	uefi)
    		;;
    	none)
    		;;
    	kernel* | msvc* )
    		# Restricted further below
    		;;
    	'')
    		if test x"$obj" = x
    		then
    			echo "Invalid configuration '$1': Blank OS only allowed with explicit machine code file format" 1>&2
    		fi
    		;;
    	*)
    		echo "Invalid configuration '$1': OS '$os' not recognized" 1>&2
    		exit 1
    		;;
    esac
    
    case $obj in
    	aout* | coff* | elf* | pe*)
    		;;
    	'')
    		# empty is fine
    		;;
    	*)
    		echo "Invalid configuration '$1': Machine code format '$obj' not recognized" 1>&2
    		exit 1
    		;;
    esac
    
    # Here we handle the constraint that a (synthetic) cpu and os are
    # valid only in combination with each other and nowhere else.
    case $cpu-$os in
    	# The "javascript-unknown-ghcjs" triple is used by GHC; we
    	# accept it here in order to tolerate that, but reject any
    	# variations.
    	javascript-ghcjs)
    		;;
    	javascript-* | *-ghcjs)
    		echo "Invalid configuration '$1': cpu '$cpu' is not valid with os '$os$obj'" 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-$obj in
    	linux-gnu*- | linux-android*- | linux-dietlibc*- | linux-llvm*- \
    		    | linux-mlibc*- | linux-musl*- | linux-newlib*- \
    		    | linux-relibc*- | linux-uclibc*- | linux-ohos*- )
    		;;
    	uclinux-uclibc*- | uclinux-gnu*- )
    		;;
    	managarm-mlibc*- | managarm-kernel*- )
    		;;
    	windows*-msvc*-)
    		;;
    	-dietlibc*- | -llvm*- | -mlibc*- | -musl*- | -newlib*- | -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
    		;;
    	-kernel*- )
    		echo "Invalid configuration '$1': '$os' needs explicit kernel." 1>&2
    		exit 1
    		;;
    	*-kernel*- )
    		echo "Invalid configuration '$1': '$kernel' does not support '$os'." 1>&2
    		exit 1
    		;;
    	*-msvc*- )
    		echo "Invalid configuration '$1': '$os' needs 'windows'." 1>&2
    		exit 1
    		;;
    	kfreebsd*-gnu*- | knetbsd*-gnu*- | netbsd*-gnu*- | kopensolaris*-gnu*-)
    		;;
    	vxworks-simlinux- | vxworks-simwindows- | vxworks-spe-)
    		;;
    	nto-qnx*-)
    		;;
    	os2-emx-)
    		;;
    	rtmk-nova-)
    		;;
    	*-eabi*- | *-gnueabi*-)
    		;;
    	none--*)
    		# None (no kernel, i.e. freestanding / bare metal),
    		# can be paired with an machine code file format
    		;;
    	-*-)
    		# Blank kernel with real OS is always fine.
    		;;
    	--*)
    		# Blank kernel and OS with real machine code file format 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=acorn
    				;;
    			*-sunos* | *-solaris*)
    				vendor=sun
    				;;
    			*-cnk* | *-aix*)
    				vendor=ibm
    				;;
    			*-beos*)
    				vendor=be
    				;;
    			*-hpux*)
    				vendor=hp
    				;;
    			*-mpeix*)
    				vendor=hp
    				;;
    			*-hiux*)
    				vendor=hitachi
    				;;
    			*-unos*)
    				vendor=crds
    				;;
    			*-dgux*)
    				vendor=dg
    				;;
    			*-luna*)
    				vendor=omron
    				;;
    			*-genix*)
    				vendor=ns
    				;;
    			*-clix*)
    				vendor=intergraph
    				;;
    			*-mvs* | *-opened*)
    				vendor=ibm
    				;;
    			*-os400*)
    				vendor=ibm
    				;;
    			s390-* | s390x-*)
    				vendor=ibm
    				;;
    			*-ptx*)
    				vendor=sequent
    				;;
    			*-tpf*)
    				vendor=ibm
    				;;
    			*-vxsim* | *-vxworks* | *-windiss*)
    				vendor=wrs
    				;;
    			*-aux*)
    				vendor=apple
    				;;
    			*-hms*)
    				vendor=hitachi
    				;;
    			*-mpw* | *-macos*)
    				vendor=apple
    				;;
    			*-*mint | *-mint[0-9]* | *-*MiNT | *-MiNT[0-9]*)
    				vendor=atari
    				;;
    			*-vos*)
    				vendor=stratus
    				;;
    		esac
    		;;
    esac
    
    echo "$cpu-$vendor${kernel:+-$kernel}${os:+-$os}${obj:+-$obj}"
    exit
    
    # Local variables:
    # eval: (add-hook 'before-save-hook 'time-stamp)
    # time-stamp-start: "timestamp='"
    # time-stamp-format: "%:y-%02m-%02d"
    # time-stamp-end: "'"
    # End: