1#! /bin/sh
2# Configuration validation subroutine script.
3#   Copyright 1992-2024 Free Software Foundation, Inc.
4
5# shellcheck disable=SC2006,SC2268 # see below for rationale
6
7timestamp='2024-01-01'
8
9# This file is free software; you can redistribute it and/or modify it
10# under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful, but
15# WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17# General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program; if not, see <https://www.gnu.org/licenses/>.
21#
22# As a special exception to the GNU General Public License, if you
23# distribute this file as part of a program that contains a
24# configuration script generated by Autoconf, you may include it under
25# the same distribution terms that you use for the rest of that
26# program.  This Exception is an additional permission under section 7
27# of the GNU General Public License, version 3 ("GPLv3").
28
29
30# Please send patches to <config-patches@gnu.org>.
31#
32# Configuration subroutine to validate and canonicalize a configuration type.
33# Supply the specified configuration type as an argument.
34# If it is invalid, we print an error message on stderr and exit with code 1.
35# Otherwise, we print the canonical config type on stdout and succeed.
36
37# You can get the latest version of this script from:
38# https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
39
40# This file is supposed to be the same for all GNU packages
41# and recognize all the CPU types, system types and aliases
42# that are meaningful with *any* GNU software.
43# Each package is responsible for reporting which valid configurations
44# it does not support.  The user should be able to distinguish
45# a failure to support a valid configuration from a meaningless
46# configuration.
47
48# The goal of this file is to map all the various variations of a given
49# machine specification into a single specification in the form:
50#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
51# or in some cases, the newer four-part form:
52#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
53# It is wrong to echo any other type of specification.
54
55# The "shellcheck disable" line above the timestamp inhibits complaints
56# about features and limitations of the classic Bourne shell that were
57# superseded or lifted in POSIX.  However, this script identifies a wide
58# variety of pre-POSIX systems that do not have POSIX shells at all, and
59# even some reasonably current systems (Solaris 10 as case-in-point) still
60# have a pre-POSIX /bin/sh.
61
62me=`echo "$0" | sed -e 's,.*/,,'`
63
64usage="\
65Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS
66
67Canonicalize a configuration name.
68
69Options:
70  -h, --help         print this help, then exit
71  -t, --time-stamp   print date of last modification, then exit
72  -v, --version      print version number, then exit
73
74Report bugs and patches to <config-patches@gnu.org>."
75
76version="\
77GNU config.sub ($timestamp)
78
79Copyright 1992-2024 Free Software Foundation, Inc.
80
81This is free software; see the source for copying conditions.  There is NO
82warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
83
84help="
85Try '$me --help' for more information."
86
87# Parse command line
88while test $# -gt 0 ; do
89  case $1 in
90    --time-stamp | --time* | -t )
91       echo "$timestamp" ; exit ;;
92    --version | -v )
93       echo "$version" ; exit ;;
94    --help | --h* | -h )
95       echo "$usage"; exit ;;
96    -- )     # Stop option processing
97       shift; break ;;
98    - )	# Use stdin as input.
99       break ;;
100    -* )
101       echo "$me: invalid option $1$help" >&2
102       exit 1 ;;
103
104    *local*)
105       # First pass through any local machine types.
106       echo "$1"
107       exit ;;
108
109    * )
110       break ;;
111  esac
112done
113
114case $# in
115 0) echo "$me: missing argument$help" >&2
116    exit 1;;
117 1) ;;
118 *) echo "$me: too many arguments$help" >&2
119    exit 1;;
120esac
121
122# Split fields of configuration type
123# shellcheck disable=SC2162
124saved_IFS=$IFS
125IFS="-" read field1 field2 field3 field4 <<EOF
126$1
127EOF
128IFS=$saved_IFS
129
130# Separate into logical components for further validation
131case $1 in
132	*-*-*-*-*)
133		echo "Invalid configuration '$1': more than four components" >&2
134		exit 1
135		;;
136	*-*-*-*)
137		basic_machine=$field1-$field2
138		basic_os=$field3-$field4
139		;;
140	*-*-*)
141		# Ambiguous whether COMPANY is present, or skipped and KERNEL-OS is two
142		# parts
143		maybe_os=$field2-$field3
144		case $maybe_os in
145			nto-qnx* | linux-* | uclinux-uclibc* \
146			| uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* \
147			| netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \
148			| storm-chaos* | os2-emx* | rtmk-nova* | managarm-* \
149			| windows-* )
150				basic_machine=$field1
151				basic_os=$maybe_os
152				;;
153			android-linux)
154				basic_machine=$field1-unknown
155				basic_os=linux-android
156				;;
157			*)
158				basic_machine=$field1-$field2
159				basic_os=$field3
160				;;
161		esac
162		;;
163	*-*)
164		# A lone config we happen to match not fitting any pattern
165		case $field1-$field2 in
166			decstation-3100)
167				basic_machine=mips-dec
168				basic_os=
169				;;
170			*-*)
171				# Second component is usually, but not always the OS
172				case $field2 in
173					# Prevent following clause from handling this valid os
174					sun*os*)
175						basic_machine=$field1
176						basic_os=$field2
177						;;
178					zephyr*)
179						basic_machine=$field1-unknown
180						basic_os=$field2
181						;;
182					# Manufacturers
183					dec* | mips* | sequent* | encore* | pc533* | sgi* | sony* \
184					| att* | 7300* | 3300* | delta* | motorola* | sun[234]* \
185					| unicom* | ibm* | next | hp | isi* | apollo | altos* \
186					| convergent* | ncr* | news | 32* | 3600* | 3100* \
187					| hitachi* | c[123]* | convex* | sun | crds | omron* | dg \
188					| ultra | tti* | harris | dolphin | highlevel | gould \
189					| cbm | ns | masscomp | apple | axis | knuth | cray \
190					| microblaze* | sim | cisco \
191					| oki | wec | wrs | winbond)
192						basic_machine=$field1-$field2
193						basic_os=
194						;;
195					*)
196						basic_machine=$field1
197						basic_os=$field2
198						;;
199				esac
200			;;
201		esac
202		;;
203	*)
204		# Convert single-component short-hands not valid as part of
205		# multi-component configurations.
206		case $field1 in
207			386bsd)
208				basic_machine=i386-pc
209				basic_os=bsd
210				;;
211			a29khif)
212				basic_machine=a29k-amd
213				basic_os=udi
214				;;
215			adobe68k)
216				basic_machine=m68010-adobe
217				basic_os=scout
218				;;
219			alliant)
220				basic_machine=fx80-alliant
221				basic_os=
222				;;
223			altos | altos3068)
224				basic_machine=m68k-altos
225				basic_os=
226				;;
227			am29k)
228				basic_machine=a29k-none
229				basic_os=bsd
230				;;
231			amdahl)
232				basic_machine=580-amdahl
233				basic_os=sysv
234				;;
235			amiga)
236				basic_machine=m68k-unknown
237				basic_os=
238				;;
239			amigaos | amigados)
240				basic_machine=m68k-unknown
241				basic_os=amigaos
242				;;
243			amigaunix | amix)
244				basic_machine=m68k-unknown
245				basic_os=sysv4
246				;;
247			apollo68)
248				basic_machine=m68k-apollo
249				basic_os=sysv
250				;;
251			apollo68bsd)
252				basic_machine=m68k-apollo
253				basic_os=bsd
254				;;
255			aros)
256				basic_machine=i386-pc
257				basic_os=aros
258				;;
259			aux)
260				basic_machine=m68k-apple
261				basic_os=aux
262				;;
263			balance)
264				basic_machine=ns32k-sequent
265				basic_os=dynix
266				;;
267			blackfin)
268				basic_machine=bfin-unknown
269				basic_os=linux
270				;;
271			cegcc)
272				basic_machine=arm-unknown
273				basic_os=cegcc
274				;;
275			convex-c1)
276				basic_machine=c1-convex
277				basic_os=bsd
278				;;
279			convex-c2)
280				basic_machine=c2-convex
281				basic_os=bsd
282				;;
283			convex-c32)
284				basic_machine=c32-convex
285				basic_os=bsd
286				;;
287			convex-c34)
288				basic_machine=c34-convex
289				basic_os=bsd
290				;;
291			convex-c38)
292				basic_machine=c38-convex
293				basic_os=bsd
294				;;
295			cray)
296				basic_machine=j90-cray
297				basic_os=unicos
298				;;
299			crds | unos)
300				basic_machine=m68k-crds
301				basic_os=
302				;;
303			da30)
304				basic_machine=m68k-da30
305				basic_os=
306				;;
307			decstation | pmax | pmin | dec3100 | decstatn)
308				basic_machine=mips-dec
309				basic_os=
310				;;
311			delta88)
312				basic_machine=m88k-motorola
313				basic_os=sysv3
314				;;
315			dicos)
316				basic_machine=i686-pc
317				basic_os=dicos
318				;;
319			djgpp)
320				basic_machine=i586-pc
321				basic_os=msdosdjgpp
322				;;
323			ebmon29k)
324				basic_machine=a29k-amd
325				basic_os=ebmon
326				;;
327			es1800 | OSE68k | ose68k | ose | OSE)
328				basic_machine=m68k-ericsson
329				basic_os=ose
330				;;
331			gmicro)
332				basic_machine=tron-gmicro
333				basic_os=sysv
334				;;
335			go32)
336				basic_machine=i386-pc
337				basic_os=go32
338				;;
339			h8300hms)
340				basic_machine=h8300-hitachi
341				basic_os=hms
342				;;
343			h8300xray)
344				basic_machine=h8300-hitachi
345				basic_os=xray
346				;;
347			h8500hms)
348				basic_machine=h8500-hitachi
349				basic_os=hms
350				;;
351			harris)
352				basic_machine=m88k-harris
353				basic_os=sysv3
354				;;
355			hp300 | hp300hpux)
356				basic_machine=m68k-hp
357				basic_os=hpux
358				;;
359			hp300bsd)
360				basic_machine=m68k-hp
361				basic_os=bsd
362				;;
363			hppaosf)
364				basic_machine=hppa1.1-hp
365				basic_os=osf
366				;;
367			hppro)
368				basic_machine=hppa1.1-hp
369				basic_os=proelf
370				;;
371			i386mach)
372				basic_machine=i386-mach
373				basic_os=mach
374				;;
375			isi68 | isi)
376				basic_machine=m68k-isi
377				basic_os=sysv
378				;;
379			m68knommu)
380				basic_machine=m68k-unknown
381				basic_os=linux
382				;;
383			magnum | m3230)
384				basic_machine=mips-mips
385				basic_os=sysv
386				;;
387			merlin)
388				basic_machine=ns32k-utek
389				basic_os=sysv
390				;;
391			mingw64)
392				basic_machine=x86_64-pc
393				basic_os=mingw64
394				;;
395			mingw32)
396				basic_machine=i686-pc
397				basic_os=mingw32
398				;;
399			mingw32ce)
400				basic_machine=arm-unknown
401				basic_os=mingw32ce
402				;;
403			monitor)
404				basic_machine=m68k-rom68k
405				basic_os=coff
406				;;
407			morphos)
408				basic_machine=powerpc-unknown
409				basic_os=morphos
410				;;
411			moxiebox)
412				basic_machine=moxie-unknown
413				basic_os=moxiebox
414				;;
415			msdos)
416				basic_machine=i386-pc
417				basic_os=msdos
418				;;
419			msys)
420				basic_machine=i686-pc
421				basic_os=msys
422				;;
423			mvs)
424				basic_machine=i370-ibm
425				basic_os=mvs
426				;;
427			nacl)
428				basic_machine=le32-unknown
429				basic_os=nacl
430				;;
431			ncr3000)
432				basic_machine=i486-ncr
433				basic_os=sysv4
434				;;
435			netbsd386)
436				basic_machine=i386-pc
437				basic_os=netbsd
438				;;
439			netwinder)
440				basic_machine=armv4l-rebel
441				basic_os=linux
442				;;
443			news | news700 | news800 | news900)
444				basic_machine=m68k-sony
445				basic_os=newsos
446				;;
447			news1000)
448				basic_machine=m68030-sony
449				basic_os=newsos
450				;;
451			necv70)
452				basic_machine=v70-nec
453				basic_os=sysv
454				;;
455			nh3000)
456				basic_machine=m68k-harris
457				basic_os=cxux
458				;;
459			nh[45]000)
460				basic_machine=m88k-harris
461				basic_os=cxux
462				;;
463			nindy960)
464				basic_machine=i960-intel
465				basic_os=nindy
466				;;
467			mon960)
468				basic_machine=i960-intel
469				basic_os=mon960
470				;;
471			nonstopux)
472				basic_machine=mips-compaq
473				basic_os=nonstopux
474				;;
475			os400)
476				basic_machine=powerpc-ibm
477				basic_os=os400
478				;;
479			OSE68000 | ose68000)
480				basic_machine=m68000-ericsson
481				basic_os=ose
482				;;
483			os68k)
484				basic_machine=m68k-none
485				basic_os=os68k
486				;;
487			paragon)
488				basic_machine=i860-intel
489				basic_os=osf
490				;;
491			parisc)
492				basic_machine=hppa-unknown
493				basic_os=linux
494				;;
495			psp)
496				basic_machine=mipsallegrexel-sony
497				basic_os=psp
498				;;
499			pw32)
500				basic_machine=i586-unknown
501				basic_os=pw32
502				;;
503			rdos | rdos64)
504				basic_machine=x86_64-pc
505				basic_os=rdos
506				;;
507			rdos32)
508				basic_machine=i386-pc
509				basic_os=rdos
510				;;
511			rom68k)
512				basic_machine=m68k-rom68k
513				basic_os=coff
514				;;
515			sa29200)
516				basic_machine=a29k-amd
517				basic_os=udi
518				;;
519			sei)
520				basic_machine=mips-sei
521				basic_os=seiux
522				;;
523			sequent)
524				basic_machine=i386-sequent
525				basic_os=
526				;;
527			sps7)
528				basic_machine=m68k-bull
529				basic_os=sysv2
530				;;
531			st2000)
532				basic_machine=m68k-tandem
533				basic_os=
534				;;
535			stratus)
536				basic_machine=i860-stratus
537				basic_os=sysv4
538				;;
539			sun2)
540				basic_machine=m68000-sun
541				basic_os=
542				;;
543			sun2os3)
544				basic_machine=m68000-sun
545				basic_os=sunos3
546				;;
547			sun2os4)
548				basic_machine=m68000-sun
549				basic_os=sunos4
550				;;
551			sun3)
552				basic_machine=m68k-sun
553				basic_os=
554				;;
555			sun3os3)
556				basic_machine=m68k-sun
557				basic_os=sunos3
558				;;
559			sun3os4)
560				basic_machine=m68k-sun
561				basic_os=sunos4
562				;;
563			sun4)
564				basic_machine=sparc-sun
565				basic_os=
566				;;
567			sun4os3)
568				basic_machine=sparc-sun
569				basic_os=sunos3
570				;;
571			sun4os4)
572				basic_machine=sparc-sun
573				basic_os=sunos4
574				;;
575			sun4sol2)
576				basic_machine=sparc-sun
577				basic_os=solaris2
578				;;
579			sun386 | sun386i | roadrunner)
580				basic_machine=i386-sun
581				basic_os=
582				;;
583			sv1)
584				basic_machine=sv1-cray
585				basic_os=unicos
586				;;
587			symmetry)
588				basic_machine=i386-sequent
589				basic_os=dynix
590				;;
591			t3e)
592				basic_machine=alphaev5-cray
593				basic_os=unicos
594				;;
595			t90)
596				basic_machine=t90-cray
597				basic_os=unicos
598				;;
599			toad1)
600				basic_machine=pdp10-xkl
601				basic_os=tops20
602				;;
603			tpf)
604				basic_machine=s390x-ibm
605				basic_os=tpf
606				;;
607			udi29k)
608				basic_machine=a29k-amd
609				basic_os=udi
610				;;
611			ultra3)
612				basic_machine=a29k-nyu
613				basic_os=sym1
614				;;
615			v810 | necv810)
616				basic_machine=v810-nec
617				basic_os=none
618				;;
619			vaxv)
620				basic_machine=vax-dec
621				basic_os=sysv
622				;;
623			vms)
624				basic_machine=vax-dec
625				basic_os=vms
626				;;
627			vsta)
628				basic_machine=i386-pc
629				basic_os=vsta
630				;;
631			vxworks960)
632				basic_machine=i960-wrs
633				basic_os=vxworks
634				;;
635			vxworks68)
636				basic_machine=m68k-wrs
637				basic_os=vxworks
638				;;
639			vxworks29k)
640				basic_machine=a29k-wrs
641				basic_os=vxworks
642				;;
643			xbox)
644				basic_machine=i686-pc
645				basic_os=mingw32
646				;;
647			ymp)
648				basic_machine=ymp-cray
649				basic_os=unicos
650				;;
651			*)
652				basic_machine=$1
653				basic_os=
654				;;
655		esac
656		;;
657esac
658
659# Decode 1-component or ad-hoc basic machines
660case $basic_machine in
661	# Here we handle the default manufacturer of certain CPU types.  It is in
662	# some cases the only manufacturer, in others, it is the most popular.
663	w89k)
664		cpu=hppa1.1
665		vendor=winbond
666		;;
667	op50n)
668		cpu=hppa1.1
669		vendor=oki
670		;;
671	op60c)
672		cpu=hppa1.1
673		vendor=oki
674		;;
675	ibm*)
676		cpu=i370
677		vendor=ibm
678		;;
679	orion105)
680		cpu=clipper
681		vendor=highlevel
682		;;
683	mac | mpw | mac-mpw)
684		cpu=m68k
685		vendor=apple
686		;;
687	pmac | pmac-mpw)
688		cpu=powerpc
689		vendor=apple
690		;;
691
692	# Recognize the various machine names and aliases which stand
693	# for a CPU type and a company and sometimes even an OS.
694	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
695		cpu=m68000
696		vendor=att
697		;;
698	3b*)
699		cpu=we32k
700		vendor=att
701		;;
702	bluegene*)
703		cpu=powerpc
704		vendor=ibm
705		basic_os=cnk
706		;;
707	decsystem10* | dec10*)
708		cpu=pdp10
709		vendor=dec
710		basic_os=tops10
711		;;
712	decsystem20* | dec20*)
713		cpu=pdp10
714		vendor=dec
715		basic_os=tops20
716		;;
717	delta | 3300 | motorola-3300 | motorola-delta \
718	      | 3300-motorola | delta-motorola)
719		cpu=m68k
720		vendor=motorola
721		;;
722	dpx2*)
723		cpu=m68k
724		vendor=bull
725		basic_os=sysv3
726		;;
727	encore | umax | mmax)
728		cpu=ns32k
729		vendor=encore
730		;;
731	elxsi)
732		cpu=elxsi
733		vendor=elxsi
734		basic_os=${basic_os:-bsd}
735		;;
736	fx2800)
737		cpu=i860
738		vendor=alliant
739		;;
740	genix)
741		cpu=ns32k
742		vendor=ns
743		;;
744	h3050r* | hiux*)
745		cpu=hppa1.1
746		vendor=hitachi
747		basic_os=hiuxwe2
748		;;
749	hp3k9[0-9][0-9] | hp9[0-9][0-9])
750		cpu=hppa1.0
751		vendor=hp
752		;;
753	hp9k2[0-9][0-9] | hp9k31[0-9])
754		cpu=m68000
755		vendor=hp
756		;;
757	hp9k3[2-9][0-9])
758		cpu=m68k
759		vendor=hp
760		;;
761	hp9k6[0-9][0-9] | hp6[0-9][0-9])
762		cpu=hppa1.0
763		vendor=hp
764		;;
765	hp9k7[0-79][0-9] | hp7[0-79][0-9])
766		cpu=hppa1.1
767		vendor=hp
768		;;
769	hp9k78[0-9] | hp78[0-9])
770		# FIXME: really hppa2.0-hp
771		cpu=hppa1.1
772		vendor=hp
773		;;
774	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
775		# FIXME: really hppa2.0-hp
776		cpu=hppa1.1
777		vendor=hp
778		;;
779	hp9k8[0-9][13679] | hp8[0-9][13679])
780		cpu=hppa1.1
781		vendor=hp
782		;;
783	hp9k8[0-9][0-9] | hp8[0-9][0-9])
784		cpu=hppa1.0
785		vendor=hp
786		;;
787	i*86v32)
788		cpu=`echo "$1" | sed -e 's/86.*/86/'`
789		vendor=pc
790		basic_os=sysv32
791		;;
792	i*86v4*)
793		cpu=`echo "$1" | sed -e 's/86.*/86/'`
794		vendor=pc
795		basic_os=sysv4
796		;;
797	i*86v)
798		cpu=`echo "$1" | sed -e 's/86.*/86/'`
799		vendor=pc
800		basic_os=sysv
801		;;
802	i*86sol2)
803		cpu=`echo "$1" | sed -e 's/86.*/86/'`
804		vendor=pc
805		basic_os=solaris2
806		;;
807	j90 | j90-cray)
808		cpu=j90
809		vendor=cray
810		basic_os=${basic_os:-unicos}
811		;;
812	iris | iris4d)
813		cpu=mips
814		vendor=sgi
815		case $basic_os in
816		    irix*)
817			;;
818		    *)
819			basic_os=irix4
820			;;
821		esac
822		;;
823	miniframe)
824		cpu=m68000
825		vendor=convergent
826		;;
827	*mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
828		cpu=m68k
829		vendor=atari
830		basic_os=mint
831		;;
832	news-3600 | risc-news)
833		cpu=mips
834		vendor=sony
835		basic_os=newsos
836		;;
837	next | m*-next)
838		cpu=m68k
839		vendor=next
840		case $basic_os in
841		    openstep*)
842		        ;;
843		    nextstep*)
844			;;
845		    ns2*)
846		      basic_os=nextstep2
847			;;
848		    *)
849		      basic_os=nextstep3
850			;;
851		esac
852		;;
853	np1)
854		cpu=np1
855		vendor=gould
856		;;
857	op50n-* | op60c-*)
858		cpu=hppa1.1
859		vendor=oki
860		basic_os=proelf
861		;;
862	pa-hitachi)
863		cpu=hppa1.1
864		vendor=hitachi
865		basic_os=hiuxwe2
866		;;
867	pbd)
868		cpu=sparc
869		vendor=tti
870		;;
871	pbb)
872		cpu=m68k
873		vendor=tti
874		;;
875	pc532)
876		cpu=ns32k
877		vendor=pc532
878		;;
879	pn)
880		cpu=pn
881		vendor=gould
882		;;
883	power)
884		cpu=power
885		vendor=ibm
886		;;
887	ps2)
888		cpu=i386
889		vendor=ibm
890		;;
891	rm[46]00)
892		cpu=mips
893		vendor=siemens
894		;;
895	rtpc | rtpc-*)
896		cpu=romp
897		vendor=ibm
898		;;
899	sde)
900		cpu=mipsisa32
901		vendor=sde
902		basic_os=${basic_os:-elf}
903		;;
904	simso-wrs)
905		cpu=sparclite
906		vendor=wrs
907		basic_os=vxworks
908		;;
909	tower | tower-32)
910		cpu=m68k
911		vendor=ncr
912		;;
913	vpp*|vx|vx-*)
914		cpu=f301
915		vendor=fujitsu
916		;;
917	w65)
918		cpu=w65
919		vendor=wdc
920		;;
921	w89k-*)
922		cpu=hppa1.1
923		vendor=winbond
924		basic_os=proelf
925		;;
926	none)
927		cpu=none
928		vendor=none
929		;;
930	leon|leon[3-9])
931		cpu=sparc
932		vendor=$basic_machine
933		;;
934	leon-*|leon[3-9]-*)
935		cpu=sparc
936		vendor=`echo "$basic_machine" | sed 's/-.*//'`
937		;;
938
939	*-*)
940		# shellcheck disable=SC2162
941		saved_IFS=$IFS
942		IFS="-" read cpu vendor <<EOF
943$basic_machine
944EOF
945		IFS=$saved_IFS
946		;;
947	# We use 'pc' rather than 'unknown'
948	# because (1) that's what they normally are, and
949	# (2) the word "unknown" tends to confuse beginning users.
950	i*86 | x86_64)
951		cpu=$basic_machine
952		vendor=pc
953		;;
954	# These rules are duplicated from below for sake of the special case above;
955	# i.e. things that normalized to x86 arches should also default to "pc"
956	pc98)
957		cpu=i386
958		vendor=pc
959		;;
960	x64 | amd64)
961		cpu=x86_64
962		vendor=pc
963		;;
964	# Recognize the basic CPU types without company name.
965	*)
966		cpu=$basic_machine
967		vendor=unknown
968		;;
969esac
970
971unset -v basic_machine
972
973# Decode basic machines in the full and proper CPU-Company form.
974case $cpu-$vendor in
975	# Here we handle the default manufacturer of certain CPU types in canonical form. It is in
976	# some cases the only manufacturer, in others, it is the most popular.
977	craynv-unknown)
978		vendor=cray
979		basic_os=${basic_os:-unicosmp}
980		;;
981	c90-unknown | c90-cray)
982		vendor=cray
983		basic_os=${Basic_os:-unicos}
984		;;
985	fx80-unknown)
986		vendor=alliant
987		;;
988	romp-unknown)
989		vendor=ibm
990		;;
991	mmix-unknown)
992		vendor=knuth
993		;;
994	microblaze-unknown | microblazeel-unknown)
995		vendor=xilinx
996		;;
997	rs6000-unknown)
998		vendor=ibm
999		;;
1000	vax-unknown)
1001		vendor=dec
1002		;;
1003	pdp11-unknown)
1004		vendor=dec
1005		;;
1006	we32k-unknown)
1007		vendor=att
1008		;;
1009	cydra-unknown)
1010		vendor=cydrome
1011		;;
1012	i370-ibm*)
1013		vendor=ibm
1014		;;
1015	orion-unknown)
1016		vendor=highlevel
1017		;;
1018	xps-unknown | xps100-unknown)
1019		cpu=xps100
1020		vendor=honeywell
1021		;;
1022
1023	# Here we normalize CPU types with a missing or matching vendor
1024	armh-unknown | armh-alt)
1025		cpu=armv7l
1026		vendor=alt
1027		basic_os=${basic_os:-linux-gnueabihf}
1028		;;
1029	dpx20-unknown | dpx20-bull)
1030		cpu=rs6000
1031		vendor=bull
1032		basic_os=${basic_os:-bosx}
1033		;;
1034
1035	# Here we normalize CPU types irrespective of the vendor
1036	amd64-*)
1037		cpu=x86_64
1038		;;
1039	blackfin-*)
1040		cpu=bfin
1041		basic_os=linux
1042		;;
1043	c54x-*)
1044		cpu=tic54x
1045		;;
1046	c55x-*)
1047		cpu=tic55x
1048		;;
1049	c6x-*)
1050		cpu=tic6x
1051		;;
1052	e500v[12]-*)
1053		cpu=powerpc
1054		basic_os=${basic_os}"spe"
1055		;;
1056	mips3*-*)
1057		cpu=mips64
1058		;;
1059	ms1-*)
1060		cpu=mt
1061		;;
1062	m68knommu-*)
1063		cpu=m68k
1064		basic_os=linux
1065		;;
1066	m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
1067		cpu=s12z
1068		;;
1069	openrisc-*)
1070		cpu=or32
1071		;;
1072	parisc-*)
1073		cpu=hppa
1074		basic_os=linux
1075		;;
1076	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
1077		cpu=i586
1078		;;
1079	pentiumpro-* | p6-* | 6x86-* | athlon-* | athlon_*-*)
1080		cpu=i686
1081		;;
1082	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
1083		cpu=i686
1084		;;
1085	pentium4-*)
1086		cpu=i786
1087		;;
1088	pc98-*)
1089		cpu=i386
1090		;;
1091	ppc-* | ppcbe-*)
1092		cpu=powerpc
1093		;;
1094	ppcle-* | powerpclittle-*)
1095		cpu=powerpcle
1096		;;
1097	ppc64-*)
1098		cpu=powerpc64
1099		;;
1100	ppc64le-* | powerpc64little-*)
1101		cpu=powerpc64le
1102		;;
1103	sb1-*)
1104		cpu=mipsisa64sb1
1105		;;
1106	sb1el-*)
1107		cpu=mipsisa64sb1el
1108		;;
1109	sh5e[lb]-*)
1110		cpu=`echo "$cpu" | sed 's/^\(sh.\)e\(.\)$/\1\2e/'`
1111		;;
1112	spur-*)
1113		cpu=spur
1114		;;
1115	strongarm-* | thumb-*)
1116		cpu=arm
1117		;;
1118	tx39-*)
1119		cpu=mipstx39
1120		;;
1121	tx39el-*)
1122		cpu=mipstx39el
1123		;;
1124	x64-*)
1125		cpu=x86_64
1126		;;
1127	xscale-* | xscalee[bl]-*)
1128		cpu=`echo "$cpu" | sed 's/^xscale/arm/'`
1129		;;
1130	arm64-* | aarch64le-*)
1131		cpu=aarch64
1132		;;
1133
1134	# Recognize the canonical CPU Types that limit and/or modify the
1135	# company names they are paired with.
1136	cr16-*)
1137		basic_os=${basic_os:-elf}
1138		;;
1139	crisv32-* | etraxfs*-*)
1140		cpu=crisv32
1141		vendor=axis
1142		;;
1143	cris-* | etrax*-*)
1144		cpu=cris
1145		vendor=axis
1146		;;
1147	crx-*)
1148		basic_os=${basic_os:-elf}
1149		;;
1150	neo-tandem)
1151		cpu=neo
1152		vendor=tandem
1153		;;
1154	nse-tandem)
1155		cpu=nse
1156		vendor=tandem
1157		;;
1158	nsr-tandem)
1159		cpu=nsr
1160		vendor=tandem
1161		;;
1162	nsv-tandem)
1163		cpu=nsv
1164		vendor=tandem
1165		;;
1166	nsx-tandem)
1167		cpu=nsx
1168		vendor=tandem
1169		;;
1170	mipsallegrexel-sony)
1171		cpu=mipsallegrexel
1172		vendor=sony
1173		;;
1174	tile*-*)
1175		basic_os=${basic_os:-linux-gnu}
1176		;;
1177
1178	*)
1179		# Recognize the canonical CPU types that are allowed with any
1180		# company name.
1181		case $cpu in
1182			1750a | 580 \
1183			| a29k \
1184			| aarch64 | aarch64_be | aarch64c | arm64ec \
1185			| abacus \
1186			| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] \
1187			| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] \
1188			| alphapca5[67] | alpha64pca5[67] \
1189			| am33_2.0 \
1190			| amdgcn \
1191			| arc | arceb | arc32 | arc64 \
1192			| arm | arm[lb]e | arme[lb] | armv* \
1193			| avr | avr32 \
1194			| asmjs \
1195			| ba \
1196			| be32 | be64 \
1197			| bfin | bpf | bs2000 \
1198			| c[123]* | c30 | [cjt]90 | c4x \
1199			| c8051 | clipper | craynv | csky | cydra \
1200			| d10v | d30v | dlx | dsp16xx \
1201			| e2k | elxsi | epiphany \
1202			| f30[01] | f700 | fido | fr30 | frv | ft32 | fx80 \
1203			| javascript \
1204			| h8300 | h8500 \
1205			| hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
1206			| hexagon \
1207			| i370 | i*86 | i860 | i960 | ia16 | ia64 \
1208			| ip2k | iq2000 \
1209			| k1om \
1210			| kvx \
1211			| le32 | le64 \
1212			| lm32 \
1213			| loongarch32 | loongarch64 \
1214			| m32c | m32r | m32rle \
1215			| m5200 | m68000 | m680[012346]0 | m68360 | m683?2 | m68k \
1216			| m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x \
1217			| m88110 | m88k | maxq | mb | mcore | mep | metag \
1218			| microblaze | microblazeel \
1219			| mips* \
1220			| mmix \
1221			| mn10200 | mn10300 \
1222			| moxie \
1223			| mt \
1224			| msp430 \
1225			| nanomips* \
1226			| nds32 | nds32le | nds32be \
1227			| nfp \
1228			| nios | nios2 | nios2eb | nios2el \
1229			| none | np1 | ns16k | ns32k | nvptx \
1230			| open8 \
1231			| or1k* \
1232			| or32 \
1233			| orion \
1234			| picochip \
1235			| pdp10 | pdp11 | pj | pjl | pn | power \
1236			| powerpc | powerpc64 | powerpc64le | powerpcle | powerpcspe \
1237			| pru \
1238			| pyramid \
1239			| riscv | riscv32 | riscv32be | riscv64 | riscv64be \
1240			| rl78 | romp | rs6000 | rx \
1241			| s390 | s390x \
1242			| score \
1243			| sh | shl \
1244			| sh[1234] | sh[24]a | sh[24]ae[lb] | sh[23]e | she[lb] | sh[lb]e \
1245			| sh[1234]e[lb] |  sh[12345][lb]e | sh[23]ele | sh64 | sh64le \
1246			| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet \
1247			| sparclite \
1248			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
1249			| spu \
1250			| tahoe \
1251			| thumbv7* \
1252			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
1253			| tron \
1254			| ubicom32 \
1255			| v70 | v850 | v850e | v850e1 | v850es | v850e2 | v850e2v3 \
1256			| vax \
1257			| vc4 \
1258			| visium \
1259			| w65 \
1260			| wasm32 | wasm64 \
1261			| we32k \
1262			| x86 | x86_64 | xc16x | xgate | xps100 \
1263			| xstormy16 | xtensa* \
1264			| ymp \
1265			| z8k | z80)
1266				;;
1267
1268			*)
1269				echo "Invalid configuration '$1': machine '$cpu-$vendor' not recognized" 1>&2
1270				exit 1
1271				;;
1272		esac
1273		;;
1274esac
1275
1276# Here we canonicalize certain aliases for manufacturers.
1277case $vendor in
1278	digital*)
1279		vendor=dec
1280		;;
1281	commodore*)
1282		vendor=cbm
1283		;;
1284	*)
1285		;;
1286esac
1287
1288# Decode manufacturer-specific aliases for certain operating systems.
1289
1290if test x"$basic_os" != x
1291then
1292
1293# First recognize some ad-hoc cases, or perhaps split kernel-os, or else just
1294# set os.
1295obj=
1296case $basic_os in
1297	gnu/linux*)
1298		kernel=linux
1299		os=`echo "$basic_os" | sed -e 's|gnu/linux|gnu|'`
1300		;;
1301	os2-emx)
1302		kernel=os2
1303		os=`echo "$basic_os" | sed -e 's|os2-emx|emx|'`
1304		;;
1305	nto-qnx*)
1306		kernel=nto
1307		os=`echo "$basic_os" | sed -e 's|nto-qnx|qnx|'`
1308		;;
1309	*-*)
1310		# shellcheck disable=SC2162
1311		saved_IFS=$IFS
1312		IFS="-" read kernel os <<EOF
1313$basic_os
1314EOF
1315		IFS=$saved_IFS
1316		;;
1317	# Default OS when just kernel was specified
1318	nto*)
1319		kernel=nto
1320		os=`echo "$basic_os" | sed -e 's|nto|qnx|'`
1321		;;
1322	linux*)
1323		kernel=linux
1324		os=`echo "$basic_os" | sed -e 's|linux|gnu|'`
1325		;;
1326	managarm*)
1327		kernel=managarm
1328		os=`echo "$basic_os" | sed -e 's|managarm|mlibc|'`
1329		;;
1330	*)
1331		kernel=
1332		os=$basic_os
1333		;;
1334esac
1335
1336# Now, normalize the OS (knowing we just have one component, it's not a kernel,
1337# etc.)
1338case $os in
1339	# First match some system type aliases that might get confused
1340	# with valid system types.
1341	# solaris* is a basic system type, with this one exception.
1342	auroraux)
1343		os=auroraux
1344		;;
1345	bluegene*)
1346		os=cnk
1347		;;
1348	solaris1 | solaris1.*)
1349		os=`echo "$os" | sed -e 's|solaris1|sunos4|'`
1350		;;
1351	solaris)
1352		os=solaris2
1353		;;
1354	unixware*)
1355		os=sysv4.2uw
1356		;;
1357	# es1800 is here to avoid being matched by es* (a different OS)
1358	es1800*)
1359		os=ose
1360		;;
1361	# Some version numbers need modification
1362	chorusos*)
1363		os=chorusos
1364		;;
1365	isc)
1366		os=isc2.2
1367		;;
1368	sco6)
1369		os=sco5v6
1370		;;
1371	sco5)
1372		os=sco3.2v5
1373		;;
1374	sco4)
1375		os=sco3.2v4
1376		;;
1377	sco3.2.[4-9]*)
1378		os=`echo "$os" | sed -e 's/sco3.2./sco3.2v/'`
1379		;;
1380	sco*v* | scout)
1381		# Don't match below
1382		;;
1383	sco*)
1384		os=sco3.2v2
1385		;;
1386	psos*)
1387		os=psos
1388		;;
1389	qnx*)
1390		os=qnx
1391		;;
1392	hiux*)
1393		os=hiuxwe2
1394		;;
1395	lynx*178)
1396		os=lynxos178
1397		;;
1398	lynx*5)
1399		os=lynxos5
1400		;;
1401	lynxos*)
1402		# don't get caught up in next wildcard
1403		;;
1404	lynx*)
1405		os=lynxos
1406		;;
1407	mac[0-9]*)
1408		os=`echo "$os" | sed -e 's|mac|macos|'`
1409		;;
1410	opened*)
1411		os=openedition
1412		;;
1413	os400*)
1414		os=os400
1415		;;
1416	sunos5*)
1417		os=`echo "$os" | sed -e 's|sunos5|solaris2|'`
1418		;;
1419	sunos6*)
1420		os=`echo "$os" | sed -e 's|sunos6|solaris3|'`
1421		;;
1422	wince*)
1423		os=wince
1424		;;
1425	utek*)
1426		os=bsd
1427		;;
1428	dynix*)
1429		os=bsd
1430		;;
1431	acis*)
1432		os=aos
1433		;;
1434	atheos*)
1435		os=atheos
1436		;;
1437	syllable*)
1438		os=syllable
1439		;;
1440	386bsd)
1441		os=bsd
1442		;;
1443	ctix* | uts*)
1444		os=sysv
1445		;;
1446	nova*)
1447		os=rtmk-nova
1448		;;
1449	ns2)
1450		os=nextstep2
1451		;;
1452	# Preserve the version number of sinix5.
1453	sinix5.*)
1454		os=`echo "$os" | sed -e 's|sinix|sysv|'`
1455		;;
1456	sinix*)
1457		os=sysv4
1458		;;
1459	tpf*)
1460		os=tpf
1461		;;
1462	triton*)
1463		os=sysv3
1464		;;
1465	oss*)
1466		os=sysv3
1467		;;
1468	svr4*)
1469		os=sysv4
1470		;;
1471	svr3)
1472		os=sysv3
1473		;;
1474	sysvr4)
1475		os=sysv4
1476		;;
1477	ose*)
1478		os=ose
1479		;;
1480	*mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
1481		os=mint
1482		;;
1483	dicos*)
1484		os=dicos
1485		;;
1486	pikeos*)
1487		# Until real need of OS specific support for
1488		# particular features comes up, bare metal
1489		# configurations are quite functional.
1490		case $cpu in
1491		    arm*)
1492			os=eabi
1493			;;
1494		    *)
1495			os=
1496			obj=elf
1497			;;
1498		esac
1499		;;
1500	aout* | coff* | elf* | pe*)
1501		# These are machine code file formats, not OSes
1502		obj=$os
1503		os=
1504		;;
1505	*)
1506		# No normalization, but not necessarily accepted, that comes below.
1507		;;
1508esac
1509
1510else
1511
1512# Here we handle the default operating systems that come with various machines.
1513# The value should be what the vendor currently ships out the door with their
1514# machine or put another way, the most popular os provided with the machine.
1515
1516# Note that if you're going to try to match "-MANUFACTURER" here (say,
1517# "-sun"), then you have to tell the case statement up towards the top
1518# that MANUFACTURER isn't an operating system.  Otherwise, code above
1519# will signal an error saying that MANUFACTURER isn't an operating
1520# system, and we'll never get to this point.
1521
1522kernel=
1523obj=
1524case $cpu-$vendor in
1525	score-*)
1526		os=
1527		obj=elf
1528		;;
1529	spu-*)
1530		os=
1531		obj=elf
1532		;;
1533	*-acorn)
1534		os=riscix1.2
1535		;;
1536	arm*-rebel)
1537		kernel=linux
1538		os=gnu
1539		;;
1540	arm*-semi)
1541		os=
1542		obj=aout
1543		;;
1544	c4x-* | tic4x-*)
1545		os=
1546		obj=coff
1547		;;
1548	c8051-*)
1549		os=
1550		obj=elf
1551		;;
1552	clipper-intergraph)
1553		os=clix
1554		;;
1555	hexagon-*)
1556		os=
1557		obj=elf
1558		;;
1559	tic54x-*)
1560		os=
1561		obj=coff
1562		;;
1563	tic55x-*)
1564		os=
1565		obj=coff
1566		;;
1567	tic6x-*)
1568		os=
1569		obj=coff
1570		;;
1571	# This must come before the *-dec entry.
1572	pdp10-*)
1573		os=tops20
1574		;;
1575	pdp11-*)
1576		os=none
1577		;;
1578	*-dec | vax-*)
1579		os=ultrix4.2
1580		;;
1581	m68*-apollo)
1582		os=domain
1583		;;
1584	i386-sun)
1585		os=sunos4.0.2
1586		;;
1587	m68000-sun)
1588		os=sunos3
1589		;;
1590	m68*-cisco)
1591		os=
1592		obj=aout
1593		;;
1594	mep-*)
1595		os=
1596		obj=elf
1597		;;
1598	mips*-cisco)
1599		os=
1600		obj=elf
1601		;;
1602	mips*-*|nanomips*-*)
1603		os=
1604		obj=elf
1605		;;
1606	or32-*)
1607		os=
1608		obj=coff
1609		;;
1610	*-tti)	# must be before sparc entry or we get the wrong os.
1611		os=sysv3
1612		;;
1613	sparc-* | *-sun)
1614		os=sunos4.1.1
1615		;;
1616	pru-*)
1617		os=
1618		obj=elf
1619		;;
1620	*-be)
1621		os=beos
1622		;;
1623	*-ibm)
1624		os=aix
1625		;;
1626	*-knuth)
1627		os=mmixware
1628		;;
1629	*-wec)
1630		os=proelf
1631		;;
1632	*-winbond)
1633		os=proelf
1634		;;
1635	*-oki)
1636		os=proelf
1637		;;
1638	*-hp)
1639		os=hpux
1640		;;
1641	*-hitachi)
1642		os=hiux
1643		;;
1644	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
1645		os=sysv
1646		;;
1647	*-cbm)
1648		os=amigaos
1649		;;
1650	*-dg)
1651		os=dgux
1652		;;
1653	*-dolphin)
1654		os=sysv3
1655		;;
1656	m68k-ccur)
1657		os=rtu
1658		;;
1659	m88k-omron*)
1660		os=luna
1661		;;
1662	*-next)
1663		os=nextstep
1664		;;
1665	*-sequent)
1666		os=ptx
1667		;;
1668	*-crds)
1669		os=unos
1670		;;
1671	*-ns)
1672		os=genix
1673		;;
1674	i370-*)
1675		os=mvs
1676		;;
1677	*-gould)
1678		os=sysv
1679		;;
1680	*-highlevel)
1681		os=bsd
1682		;;
1683	*-encore)
1684		os=bsd
1685		;;
1686	*-sgi)
1687		os=irix
1688		;;
1689	*-siemens)
1690		os=sysv4
1691		;;
1692	*-masscomp)
1693		os=rtu
1694		;;
1695	f30[01]-fujitsu | f700-fujitsu)
1696		os=uxpv
1697		;;
1698	*-rom68k)
1699		os=
1700		obj=coff
1701		;;
1702	*-*bug)
1703		os=
1704		obj=coff
1705		;;
1706	*-apple)
1707		os=macos
1708		;;
1709	*-atari*)
1710		os=mint
1711		;;
1712	*-wrs)
1713		os=vxworks
1714		;;
1715	*)
1716		os=none
1717		;;
1718esac
1719
1720fi
1721
1722# Now, validate our (potentially fixed-up) individual pieces (OS, OBJ).
1723
1724case $os in
1725	# Sometimes we do "kernel-libc", so those need to count as OSes.
1726	llvm* | musl* | newlib* | relibc* | uclibc*)
1727		;;
1728	# Likewise for "kernel-abi"
1729	eabi* | gnueabi*)
1730		;;
1731	# VxWorks passes extra cpu info in the 4th filed.
1732	simlinux | simwindows | spe)
1733		;;
1734	# See `case $cpu-$os` validation below
1735	ghcjs)
1736		;;
1737	# Now accept the basic system types.
1738	# The portable systems comes first.
1739	# Each alternative MUST end in a * to match a version number.
1740	gnu* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
1741	     | *vms* | esix* | aix* | cnk* | sunos | sunos[34]* \
1742	     | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
1743	     | sym* |  plan9* | psp* | sim* | xray* | os68k* | v88r* \
1744	     | hiux* | abug | nacl* | netware* | windows* \
1745	     | os9* | macos* | osx* | ios* | tvos* | watchos* \
1746	     | mpw* | magic* | mmixware* | mon960* | lnews* \
1747	     | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \
1748	     | aos* | aros* | cloudabi* | sortix* | twizzler* \
1749	     | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
1750	     | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
1751	     | mirbsd* | netbsd* | dicos* | openedition* | ose* \
1752	     | bitrig* | openbsd* | secbsd* | solidbsd* | libertybsd* | os108* \
1753	     | ekkobsd* | freebsd* | riscix* | lynxos* | os400* \
1754	     | bosx* | nextstep* | cxux* | oabi* \
1755	     | ptx* | ecoff* | winnt* | domain* | vsta* \
1756	     | udi* | lites* | ieee* | go32* | aux* | hcos* \
1757	     | chorusrdb* | cegcc* | glidix* | serenity* \
1758	     | cygwin* | msys* | moss* | proelf* | rtems* \
1759	     | midipix* | mingw32* | mingw64* | mint* \
1760	     | uxpv* | beos* | mpeix* | udk* | moxiebox* \
1761	     | interix* | uwin* | mks* | rhapsody* | darwin* \
1762	     | openstep* | oskit* | conix* | pw32* | nonstopux* \
1763	     | storm-chaos* | tops10* | tenex* | tops20* | its* \
1764	     | os2* | vos* | palmos* | uclinux* | nucleus* | morphos* \
1765	     | scout* | superux* | sysv* | rtmk* | tpf* | windiss* \
1766	     | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \
1767	     | skyos* | haiku* | rdos* | toppers* | drops* | es* \
1768	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
1769	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
1770	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | zephyr* \
1771	     | fiwix* | mlibc* | cos* | mbr* | ironclad* )
1772		;;
1773	# This one is extra strict with allowed versions
1774	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
1775		# Don't forget version if it is 3.2v4 or newer.
1776		;;
1777	# This refers to builds using the UEFI calling convention
1778	# (which depends on the architecture) and PE file format.
1779	# Note that this is both a different calling convention and
1780	# different file format than that of GNU-EFI
1781	# (x86_64-w64-mingw32).
1782	uefi)
1783		;;
1784	none)
1785		;;
1786	kernel* | msvc* )
1787		# Restricted further below
1788		;;
1789	'')
1790		if test x"$obj" = x
1791		then
1792			echo "Invalid configuration '$1': Blank OS only allowed with explicit machine code file format" 1>&2
1793		fi
1794		;;
1795	*)
1796		echo "Invalid configuration '$1': OS '$os' not recognized" 1>&2
1797		exit 1
1798		;;
1799esac
1800
1801case $obj in
1802	aout* | coff* | elf* | pe*)
1803		;;
1804	'')
1805		# empty is fine
1806		;;
1807	*)
1808		echo "Invalid configuration '$1': Machine code format '$obj' not recognized" 1>&2
1809		exit 1
1810		;;
1811esac
1812
1813# Here we handle the constraint that a (synthetic) cpu and os are
1814# valid only in combination with each other and nowhere else.
1815case $cpu-$os in
1816	# The "javascript-unknown-ghcjs" triple is used by GHC; we
1817	# accept it here in order to tolerate that, but reject any
1818	# variations.
1819	javascript-ghcjs)
1820		;;
1821	javascript-* | *-ghcjs)
1822		echo "Invalid configuration '$1': cpu '$cpu' is not valid with os '$os$obj'" 1>&2
1823		exit 1
1824		;;
1825esac
1826
1827# As a final step for OS-related things, validate the OS-kernel combination
1828# (given a valid OS), if there is a kernel.
1829case $kernel-$os-$obj in
1830	linux-gnu*- | linux-android*- | linux-dietlibc*- | linux-llvm*- \
1831		    | linux-mlibc*- | linux-musl*- | linux-newlib*- \
1832		    | linux-relibc*- | linux-uclibc*- )
1833		;;
1834	uclinux-uclibc*- )
1835		;;
1836	managarm-mlibc*- | managarm-kernel*- )
1837		;;
1838	windows*-msvc*-)
1839		;;
1840	-dietlibc*- | -llvm*- | -mlibc*- | -musl*- | -newlib*- | -relibc*- \
1841		    | -uclibc*- )
1842		# These are just libc implementations, not actual OSes, and thus
1843		# require a kernel.
1844		echo "Invalid configuration '$1': libc '$os' needs explicit kernel." 1>&2
1845		exit 1
1846		;;
1847	-kernel*- )
1848		echo "Invalid configuration '$1': '$os' needs explicit kernel." 1>&2
1849		exit 1
1850		;;
1851	*-kernel*- )
1852		echo "Invalid configuration '$1': '$kernel' does not support '$os'." 1>&2
1853		exit 1
1854		;;
1855	*-msvc*- )
1856		echo "Invalid configuration '$1': '$os' needs 'windows'." 1>&2
1857		exit 1
1858		;;
1859	kfreebsd*-gnu*- | kopensolaris*-gnu*-)
1860		;;
1861	vxworks-simlinux- | vxworks-simwindows- | vxworks-spe-)
1862		;;
1863	nto-qnx*-)
1864		;;
1865	os2-emx-)
1866		;;
1867	*-eabi*- | *-gnueabi*-)
1868		;;
1869	none--*)
1870		# None (no kernel, i.e. freestanding / bare metal),
1871		# can be paired with an machine code file format
1872		;;
1873	-*-)
1874		# Blank kernel with real OS is always fine.
1875		;;
1876	--*)
1877		# Blank kernel and OS with real machine code file format is always fine.
1878		;;
1879	*-*-*)
1880		echo "Invalid configuration '$1': Kernel '$kernel' not known to work with OS '$os'." 1>&2
1881		exit 1
1882		;;
1883esac
1884
1885# Here we handle the case where we know the os, and the CPU type, but not the
1886# manufacturer.  We pick the logical manufacturer.
1887case $vendor in
1888	unknown)
1889		case $cpu-$os in
1890			*-riscix*)
1891				vendor=acorn
1892				;;
1893			*-sunos*)
1894				vendor=sun
1895				;;
1896			*-cnk* | *-aix*)
1897				vendor=ibm
1898				;;
1899			*-beos*)
1900				vendor=be
1901				;;
1902			*-hpux*)
1903				vendor=hp
1904				;;
1905			*-mpeix*)
1906				vendor=hp
1907				;;
1908			*-hiux*)
1909				vendor=hitachi
1910				;;
1911			*-unos*)
1912				vendor=crds
1913				;;
1914			*-dgux*)
1915				vendor=dg
1916				;;
1917			*-luna*)
1918				vendor=omron
1919				;;
1920			*-genix*)
1921				vendor=ns
1922				;;
1923			*-clix*)
1924				vendor=intergraph
1925				;;
1926			*-mvs* | *-opened*)
1927				vendor=ibm
1928				;;
1929			*-os400*)
1930				vendor=ibm
1931				;;
1932			s390-* | s390x-*)
1933				vendor=ibm
1934				;;
1935			*-ptx*)
1936				vendor=sequent
1937				;;
1938			*-tpf*)
1939				vendor=ibm
1940				;;
1941			*-vxsim* | *-vxworks* | *-windiss*)
1942				vendor=wrs
1943				;;
1944			*-aux*)
1945				vendor=apple
1946				;;
1947			*-hms*)
1948				vendor=hitachi
1949				;;
1950			*-mpw* | *-macos*)
1951				vendor=apple
1952				;;
1953			*-*mint | *-mint[0-9]* | *-*MiNT | *-MiNT[0-9]*)
1954				vendor=atari
1955				;;
1956			*-vos*)
1957				vendor=stratus
1958				;;
1959		esac
1960		;;
1961esac
1962
1963echo "$cpu-$vendor${kernel:+-$kernel}${os:+-$os}${obj:+-$obj}"
1964exit
1965
1966# Local variables:
1967# eval: (add-hook 'before-save-hook 'time-stamp)
1968# time-stamp-start: "timestamp='"
1969# time-stamp-format: "%:y-%02m-%02d"
1970# time-stamp-end: "'"
1971# End:
1972