From 69e87de278d46588593bca456fdf10cba7b52c88 Mon Sep 17 00:00:00 2001
From: "K. Richard Pixley" <rich@cygnus>
Date: Fri, 23 Aug 1991 04:50:56 +0000
Subject: [PATCH] Minor config polish.

---
 bfd/configure       |  14 +-
 bfd/configure.in    |   5 +
 config.sub          | 576 +++++++++++++++++++++++++++++-----------------------
 gdb/config.sub      | 576 +++++++++++++++++++++++++++++-----------------------
 gdb/configure.in    |  19 +-
 readline/config.sub | 576 +++++++++++++++++++++++++++++-----------------------
 6 files changed, 990 insertions(+), 776 deletions(-)

diff --git a/bfd/configure b/bfd/configure
index 659a285..9aa01f9 100755
--- a/bfd/configure
+++ b/bfd/configure
@@ -413,8 +413,8 @@ wrs)
 	;;
 sun)
 	case "${target_cpu}" in
-	m68k)	bfd_target=sun3 ;;
-	sparc)	bfd_target=sun4 ;;
+	m68k)	bfd_target=m68k-aout ;;
+	sparc)	bfd_target=sparc-aout ;;
 	esac
 	;;
 dec)
@@ -432,6 +432,11 @@ hp)
 		;;
 	esac
 	;;
+none)
+	case "${target_cpu}" in
+	i386) bfd_target=i386-coff ;;
+	esac
+	;;
 *)
 	case "${target_cpu}" in
 	tahoe | vax) bfd_target=${target_cpu} ;;
@@ -706,7 +711,10 @@ exit 0
 
 #
 # $Log$
-# Revision 1.22  1991/08/23 03:31:43  rich
+# Revision 1.23  1991/08/23 04:48:43  rich
+# Minor config polish.
+#
+# Revision 1.22  1991/08/23  03:31:43  rich
 # Minor polish & config mapping.
 #
 # Revision 1.30  1991/08/22  07:15:51  rich
diff --git a/bfd/configure.in b/bfd/configure.in
index 30b3bb4..185079b 100644
--- a/bfd/configure.in
+++ b/bfd/configure.in
@@ -102,6 +102,11 @@ hp)
 		;;
 	esac
 	;;
+none)
+	case "${target_cpu}" in
+	i386) bfd_target=i386-coff ;;
+	esac
+	;;
 *)
 	case "${target_cpu}" in
 	tahoe | vax) bfd_target=${target_cpu} ;;
diff --git a/config.sub b/config.sub
index 58338df..c3e0028 100755
--- a/config.sub
+++ b/config.sub
@@ -13,264 +13,332 @@
 # a failure to support a valid configuration from a meaningless
 # configuration.
 
-# Separate what the user gave into CPU-company and OS (if any).
-basic_machine=`echo $1 | sed 's/-[^-]*$//'`
-if [ $basic_machine != $1 ]
-then os=`echo $1 | sed 's/^.*-/-/'`
-else os=; fi
+# decode aliases into canonical names
 
-# Decode aliases for certain machine-company combinations.
-case $basic_machine in
-	# Recognize the basic CPU types without company name.
-	vax | tahoe | i386 | i860 | m68k | m68000 | m88k | sparc | ns32k \
-	    | alliant | arm | c1 | c2 | mips | pyramid | tron | a29k \
-	    | rtpc | rs6000 | i960 | none)
-		;;
-	# Recognize the basic CPU types with company name.
-	vax-* | tahoe-* | i386-* | i860-* | m68k-* | m68000-* | m88k-* \
-		| sparc-* | ns32k-* | alliant-* | arm-* | c1-* | c2-* \
-		| mips-* | pyramid-* | tron-* | a29k-* | rtpc-* \
-		| rs6000-* | i960-*)
-		;;
-	# Recognize the machine names
-	# which stand for a CPU time and a company.
-	nindy960)
-		basic_machine=i960-intel
-		os=-nindy
-		;;
-	vxworks68)
-		basic_machine=m68k-wrs
-		os=-vxworks
-		;;
-	vxworks960)
-		basic_machine=i960-wrs
-		os=-vxworks
-		;;
-	am29k)
-		basic_machine=a29k-unknown
-		os=-bsd
-		;;
-	umax)
-		basic_machine=ns32k-umax
-		os=-sysv # maybe?
-		;;
-	pn)
-		basic_machine=pn-gould
-		os=-sysv # maybe?
-		;;
-	np1)
-		basic_machine=np1-gould
-		os=-sysv # maybe?
-		;;
-	merlin)
-		basic_machine=merlin-utek
-		os=-sysv # maybe?
-		;;
-	iris | iris4d)
-		basic_machine=mips-sgi
-		os=-sysv # maybe?
-		;;
-	news1000)
-		basic_machine=m68030-sony
-		os=-sysv # maybe?
-		;;
-	news | news700 | news800 | news900)
-		basic_machine=m68k-sony
-		os=-sysv # maybe?
-		;;
-	unixpc | safari | pc7300 | 3b1 | 7300 | 7300-att | att-7300)
-		basic_machine=m68k-att
-		os=-sysv # maybe?
-		;;
-	delta | 3300 | motorola-3300 | motorola-delta \
-	      | 3300-motorola | delta-motorola)
-		basic_machine=m68k-motorola
-		os=-sysv # maybe?
-		;;
-	vax-dec)
-		basic_machine=vax
-		os=-ultrix # maybe?
-		;;
-	balance)
-		basic_machine=ns32k-sequent
-		os=-dynix
-		;;
-        mmax)
-		basic_machine=ns32k-encore
-		os=-sysv # maybe?
-		;;
-	symmetry)
-		basic_machine=i386-sequent
-		os=-dynix
-		;;
-	sun2)
-		basic_machine=m68000-sun
-		os=-sunos4
-		;;
-	sun2os3)
-		basic_machine=m68000-sun
-		os=-sunos3
-		;;
-	sun2os4)
-		basic_machine=m68000-sun
-		os=-sunos4
-		;;
-	sun3)
-		basic_machine=m68k-sun
-		os=-sunos4
-		;;
-	sun3os3)
-		basic_machine=m68k-sun
-		os=-sunos3
-		;;
-	sun3os4)
-		basic_machine=m68k-sun
-		os=-sunos4
-		;;
-	sun4)
-		basic_machine=sparc-sun
-		os=-sunos4
-		;;
-	sun4os3)
-		basic_machine=sparc-sun
-		os=-sunos3
-		;;
-	sun4os4)
-		basic_machine=sparc-sun
-		os=-sunos4
-		;;
-	pbd)
-		basic_machine=sparc-unicom
-		os=-sysv
-		;;
-	roadrunner | sun386 | sun386i)
-		basic_machine=i386-sun
-		os=-sunos
-		;;
-	ps2)
-		basic_machine=i386-ibm
-		os=-sysv # maybe?
-		;;
-	i386sco)
-		basic_machine=i386-sco
-		os=-sysv # maybe?
-		;;
-	i386v)
-		basic_machine=i386-unknown
-		os=-sysv
-		;;
-	i386v32)
-		basic_machine=i386-unknown
-		os=-sysv32
-		;;
-	next)
-		basic_machine=m68k-next
-		os=-sysv # maybe?
-		;;
-	hp300bsd)
-		basic_machine=m68k-hp
-		os=-bsd
-		;;
-	hp300hpux | hpux | hp9k3[2-9][0-9])
-		basic_machine=m68k-hp
-		os=-hpux
-		;;
-	hp9k31[0-9] | hp9k2[0-9][0-9])
-		basic_machine=m68000-hp
-		os=-hpux
-		;;
-	isi | isi68)
-		basic_machine=m68k-isi
-		os=-sysv # maybe?
-		;;
-	apollo68)
-		basic_machine=m68k-apollo
-		os=-sysv # maybe?
-		;;
-	altos | altos3068)
-		basic_machine=m68k-altos
-		os=-sysv # maybe?
-		;;
-	altosgas)
-		basic_machine=m68k-altos
-		os=-gas
-		;;
-	miniframe)
-		basic_machine=m68000-convergent
-		os=-sysv # maybe?
-		;;
-	tower | tower-32)
-		basic_machine=m68k-ncr
-		os=-sysv # maybe?
-		;;
-	bigmips | news-3600 | risc-news)
-		basic_machine=mips-sony
-		os=-newsos # maybe?
-		;;
-	littlemips)
-		basic_machine=mips-little
-		os=-bsd
-		;;
-	dec3100 | decstatn | decstation | decstation-3100 | pmax)
-		basic_machine=mips-dec
-		os=-ultrix
-		;;
-	magnum | m3230)
-		basic_machine=mips-mips
-		os=-sysv # maybe?
-		;;
-	gmicro)
-		basic_machine=tron
-		os=-sysv # maybe?
-		;;
-	convex-c1)
-		basic_machine=c1-convex
-		os=-sysv # maybe?
-		;;
-	convex-c2)
-		basic_machine=c2-convex
-		os=-sysv # maybe?
-		;;
-	*)
-		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+case "$1" in
+# cpu alone is a valid alias for cpu-none-none.
+vax | tahoe | i386 | i860 | m68k | m68000 | m88k | sparc | ns32k \
+	| alliant | arm | c1 | c2 | mips | pyramid | tron | a29k \
+	| rtpc | rs6000 | i960)
+	cpu=$1
+	vendor=none
+	os=none
+	;;
+nindy960)
+	cpu=i960
+	vendor=intel
+	os=nindy
+	;;
+vxworks68)
+	cpu=m68k
+	vendor=wrs
+	os=vxworks
+	;;
+vxworks960)
+	cpu=i960
+	vendor=wrs
+	os=vxworks
+	;;
+am29k)
+	cpu=a29k
+	vendor=none
+	os=bsd
+	;;
+umax)
+	cpu=ns32k
+	vendor=encore
+	os=sysv # maybe?
+	;;
+pn)
+	cpu=pn
+	vendor=gould
+	os=sysv # maybe?
+	;;
+np1)
+	cpu=np1
+	vendor=gould
+	os=sysv # maybe?
+	;;
+merlin)
+	cpu=merlin
+	vendor=utek
+	os=sysv # maybe?
+	;;
+iris | iris4d)
+	cpu=mips
+	vendor=sgi
+	os=sysv # maybe?
+	;;
+news1000)
+	cpu=m68030
+	vendor=sony
+	os=sysv # maybe?
+	;;
+news | news700 | news800 | news900)
+	cpu=m68k
+	vendor=sony
+	os=sysv # maybe?
+	;;
+unixpc | safari | pc7300 | 3b1 | 7300 | 7300-att | att-7300)
+	cpu=m68k
+	vendor=att
+	os=sysv # maybe?
+	;;
+delta | 3300 | motorola-3300 | motorola-delta \
+      | 3300-motorola | delta-motorola)
+	cpu=m68k
+	vendor=motorola
+	os=sysv # maybe?
+	;;
+vax-dec)
+	cpu=vax
+	vendor=dec
+	os=ultrix # maybe?
+	;;
+balance)
+	cpu=ns32k
+	vendor=sequent
+	os=dynix
+	;;
+mmax)
+	cpu=ns32k
+	vendor=encore
+	os=sysv # maybe?
+	;;
+symmetry)
+	cpu=i386
+	vendor=sequent
+	os=dynix
+	;;
+sun2)
+	cpu=m68000
+	vendor=sun
+	os=sunos4
+	;;
+sun2os3)
+	cpu=m68000
+	vendor=sun
+	os=sunos3
+	;;
+sun2os4)
+	cpu=m68000
+	vendor=sun
+	os=sunos4
+	;;
+sun3)
+	cpu=m68k
+	vendor=sun
+	os=sunos4
+	;;
+sun3os3)
+	cpu=m68k
+	vendor=sun
+	os=sunos3
+	;;
+sun3os4)
+	cpu=m68k
+	vendor=sun
+	os=sunos4
+	;;
+sun4)
+	cpu=sparc
+	vendor=sun
+	os=sunos4
+	;;
+sun4os3)
+	cpu=sparc
+	vendor=sun
+	os=sunos3
+	;;
+sun4os4)
+	cpu=sparc
+	vendor=sun
+	os=sunos4
+	;;
+pbd)
+	cpu=sparc
+	vendor=unicom
+	os=sysv
+	;;
+roadrunner | sun386 | sun386i)
+	cpu=i386
+	vendor=sun
+	os=sunos
+	;;
+ps2)
+	cpu=i386
+	vendor=ibm
+	os=sysv # maybe?
+	;;
+i386sco)
+	cpu=i386
+	vendor=sco
+	os=sysv # maybe?
+	;;
+i386v)
+	cpu=i386
+	vendor=none
+	os=sysv
+	;;
+i386v32)
+	cpu=i386
+	vendor=none
+	os=sysv32
+	;;
+next)
+	cpu=m68k
+	vendor=next
+	os=sysv # maybe?
+	;;
+hp300bsd)
+	cpu=m68k
+	vendor=hp
+	os=bsd
+	;;
+hp300hpux | hpux | hp9k3[2-9][0-9])
+	cpu=m68k
+	vendor=hp
+	os=hpux
+	;;
+hp9k31[0-9] | hp9k2[0-9][0-9])
+	cpu=m68000
+	vendor=hp
+	os=hpux
+	;;
+isi | isi68)
+	cpu=m68k
+	vendor=isi
+	os=sysv # maybe?
+	;;
+apollo68)
+	cpu=m68k
+	vendor=apollo
+	os=sysv # maybe?
+	;;
+altos | altos3068)
+	cpu=m68k
+	vendor=altos
+	os=sysv # maybe?
+	;;
+altosgas)
+	cpu=m68k
+	vendor=altos
+	os=gas
+	;;
+miniframe)
+	cpu=m68000
+	vendor=convergent
+	os=sysv # maybe?
+	;;
+tower | tower-32)
+	cpu=m68k
+	vendor=ncr
+	os=sysv # maybe?
+	;;
+bigmips | news-3600 | risc-news)
+	cpu=mips
+	vendor=sony
+	os=newsos # maybe?
+	;;
+littlemips)
+	cpu=mips
+	vendor=little
+	os=bsd
+	;;
+dec3100 | decstatn | decstation | decstation-3100 | pmax)
+	cpu=mips
+	vendor=dec
+	os=ultrix
+	;;
+magnum | m3230)
+	cpu=mips
+	vendor=mips
+	os=sysv # maybe?
+	;;
+gmicro)
+	cpu=tron
+	vendor=none
+	os=sysv # maybe?
+	;;
+convex-c1)
+	cpu=c1
+	vendor=convex
+	os=sysv # maybe?
+	;;
+convex-c2)
+	cpu=c2
+	vendor=convex
+	os=sysv # maybe?
+	;;
+none)
+	cpu=none
+	vendor=none
+	os=none
+	;;
+
+# not an alias.  parse what we expect to be a canonical name.
+*)
+	cpu=`echo $1 | sed 's/-.*$//'`
+
+	if [ "${cpu}" = "$1" ] ; then
+		# no vendor so this is an invalid name.
+		echo '***' No vendor: configuration \`$1\' not recognized 1>&2
 		exit 1
-		;;
+	else
+		# parse out vendor
+		rest=`echo $1 | sed "s/${cpu}-//"`
+		vendor=`echo ${rest} | sed 's/-.*$//'`
+
+		if [ "${vendor}" = "${rest}" ] ; then
+			# a missing os is acceptable
+			os=none
+		else
+			os=`echo ${rest} | sed "s/${vendor}-//"`
+		fi
+	fi
+	;;
 esac
 
-# Decode manufacturer-specific aliases for certain operating systems.
+# At this point we should have three parts of a canonical name in cpu,
+# vendor, and os.
 
-case $os in
-	# First accept the basic system types.
-	# The portable systems comes first.
-	-bsd* | -sysv* | -mach* \
-		| -vms* | -sco* | -esix* | -isc* | -aix* | -sunos* | -hpux* \
-		| -unos* | -osf* | -v88r* | -aout | -coff | -bout \
-		| -nindy | -vxworks)
-		;;
-	-newsos*)
-		os=-bsd
-		;;
-	-ultrix*)
-		os=-bsd
-		;;
-	-osfrose*)
-		os=-osf
-		;;
-	-osf*)
-		os=-bsd
-		;;
-	-dynix*)
-		os=-bsd
-		;;
-	-ctix*)
-		os=-sysv
-		;;
-	*)
-		# Get rid of the `-' at the beginning of $os.
-		os=`echo $1 | sed 's/[^-]*-//'`
-		echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
-		exit 1
-		;;
+# verify that the cpu is known.
+
+case "${cpu}" in
+vax | tahoe | i386 | i860 | m68k | m68000 | m88k | sparc | ns32k \
+	| alliant | arm | c1 | c2 | mips | pyramid | tron | a29k \
+	| rtpc | rs6000 | i960)
+	;;
+*)
+	echo '***' Invalid cpu \`${cpu}\': configuration \`$1\' not recognized 1>&2
+	exit 1
+	;;
+esac
+
+# verify that the vendor is known.
+
+case "${vendor}" in
+none | convex | mips | dec | little | sony | ncr | convergent \
+	| altos | apollo | isi | hp | next | sco | ibm | sun \
+	| unicom | sequent | encore | motorola | att | sgi \
+	| utek | gould | wrs | intel | aout | bout | coff) ;;
+*)
+	echo '***' Invalid vendor \`${vendor}\': configuration \`$1\' not recognized 1>&2
+	exit 1
+	;;
+esac
+
+# verify that the os is known, if it exists.
+
+case "${os}" in
+aix* | aout | bout | bsd* | coff | ctix* | dynix* | esix* | hpux* \
+	| isc* | mach* | newsos* | nindy* | none | osf* | osf* | sco* \
+	| sunos* | sysv* | ultrix* | unos* | v88r* | vms* | vxworks*)
+	;;
+*)
+	echo '***' Invalid os \`${os}\': configuration \`$1\' not recognized 1>&2
+	exit 1
+	;;
 esac
 
-echo ${basic_machine}${os}
+echo ${cpu}-${vendor}-${os}
diff --git a/gdb/config.sub b/gdb/config.sub
index 58338df..c3e0028 100755
--- a/gdb/config.sub
+++ b/gdb/config.sub
@@ -13,264 +13,332 @@
 # a failure to support a valid configuration from a meaningless
 # configuration.
 
-# Separate what the user gave into CPU-company and OS (if any).
-basic_machine=`echo $1 | sed 's/-[^-]*$//'`
-if [ $basic_machine != $1 ]
-then os=`echo $1 | sed 's/^.*-/-/'`
-else os=; fi
+# decode aliases into canonical names
 
-# Decode aliases for certain machine-company combinations.
-case $basic_machine in
-	# Recognize the basic CPU types without company name.
-	vax | tahoe | i386 | i860 | m68k | m68000 | m88k | sparc | ns32k \
-	    | alliant | arm | c1 | c2 | mips | pyramid | tron | a29k \
-	    | rtpc | rs6000 | i960 | none)
-		;;
-	# Recognize the basic CPU types with company name.
-	vax-* | tahoe-* | i386-* | i860-* | m68k-* | m68000-* | m88k-* \
-		| sparc-* | ns32k-* | alliant-* | arm-* | c1-* | c2-* \
-		| mips-* | pyramid-* | tron-* | a29k-* | rtpc-* \
-		| rs6000-* | i960-*)
-		;;
-	# Recognize the machine names
-	# which stand for a CPU time and a company.
-	nindy960)
-		basic_machine=i960-intel
-		os=-nindy
-		;;
-	vxworks68)
-		basic_machine=m68k-wrs
-		os=-vxworks
-		;;
-	vxworks960)
-		basic_machine=i960-wrs
-		os=-vxworks
-		;;
-	am29k)
-		basic_machine=a29k-unknown
-		os=-bsd
-		;;
-	umax)
-		basic_machine=ns32k-umax
-		os=-sysv # maybe?
-		;;
-	pn)
-		basic_machine=pn-gould
-		os=-sysv # maybe?
-		;;
-	np1)
-		basic_machine=np1-gould
-		os=-sysv # maybe?
-		;;
-	merlin)
-		basic_machine=merlin-utek
-		os=-sysv # maybe?
-		;;
-	iris | iris4d)
-		basic_machine=mips-sgi
-		os=-sysv # maybe?
-		;;
-	news1000)
-		basic_machine=m68030-sony
-		os=-sysv # maybe?
-		;;
-	news | news700 | news800 | news900)
-		basic_machine=m68k-sony
-		os=-sysv # maybe?
-		;;
-	unixpc | safari | pc7300 | 3b1 | 7300 | 7300-att | att-7300)
-		basic_machine=m68k-att
-		os=-sysv # maybe?
-		;;
-	delta | 3300 | motorola-3300 | motorola-delta \
-	      | 3300-motorola | delta-motorola)
-		basic_machine=m68k-motorola
-		os=-sysv # maybe?
-		;;
-	vax-dec)
-		basic_machine=vax
-		os=-ultrix # maybe?
-		;;
-	balance)
-		basic_machine=ns32k-sequent
-		os=-dynix
-		;;
-        mmax)
-		basic_machine=ns32k-encore
-		os=-sysv # maybe?
-		;;
-	symmetry)
-		basic_machine=i386-sequent
-		os=-dynix
-		;;
-	sun2)
-		basic_machine=m68000-sun
-		os=-sunos4
-		;;
-	sun2os3)
-		basic_machine=m68000-sun
-		os=-sunos3
-		;;
-	sun2os4)
-		basic_machine=m68000-sun
-		os=-sunos4
-		;;
-	sun3)
-		basic_machine=m68k-sun
-		os=-sunos4
-		;;
-	sun3os3)
-		basic_machine=m68k-sun
-		os=-sunos3
-		;;
-	sun3os4)
-		basic_machine=m68k-sun
-		os=-sunos4
-		;;
-	sun4)
-		basic_machine=sparc-sun
-		os=-sunos4
-		;;
-	sun4os3)
-		basic_machine=sparc-sun
-		os=-sunos3
-		;;
-	sun4os4)
-		basic_machine=sparc-sun
-		os=-sunos4
-		;;
-	pbd)
-		basic_machine=sparc-unicom
-		os=-sysv
-		;;
-	roadrunner | sun386 | sun386i)
-		basic_machine=i386-sun
-		os=-sunos
-		;;
-	ps2)
-		basic_machine=i386-ibm
-		os=-sysv # maybe?
-		;;
-	i386sco)
-		basic_machine=i386-sco
-		os=-sysv # maybe?
-		;;
-	i386v)
-		basic_machine=i386-unknown
-		os=-sysv
-		;;
-	i386v32)
-		basic_machine=i386-unknown
-		os=-sysv32
-		;;
-	next)
-		basic_machine=m68k-next
-		os=-sysv # maybe?
-		;;
-	hp300bsd)
-		basic_machine=m68k-hp
-		os=-bsd
-		;;
-	hp300hpux | hpux | hp9k3[2-9][0-9])
-		basic_machine=m68k-hp
-		os=-hpux
-		;;
-	hp9k31[0-9] | hp9k2[0-9][0-9])
-		basic_machine=m68000-hp
-		os=-hpux
-		;;
-	isi | isi68)
-		basic_machine=m68k-isi
-		os=-sysv # maybe?
-		;;
-	apollo68)
-		basic_machine=m68k-apollo
-		os=-sysv # maybe?
-		;;
-	altos | altos3068)
-		basic_machine=m68k-altos
-		os=-sysv # maybe?
-		;;
-	altosgas)
-		basic_machine=m68k-altos
-		os=-gas
-		;;
-	miniframe)
-		basic_machine=m68000-convergent
-		os=-sysv # maybe?
-		;;
-	tower | tower-32)
-		basic_machine=m68k-ncr
-		os=-sysv # maybe?
-		;;
-	bigmips | news-3600 | risc-news)
-		basic_machine=mips-sony
-		os=-newsos # maybe?
-		;;
-	littlemips)
-		basic_machine=mips-little
-		os=-bsd
-		;;
-	dec3100 | decstatn | decstation | decstation-3100 | pmax)
-		basic_machine=mips-dec
-		os=-ultrix
-		;;
-	magnum | m3230)
-		basic_machine=mips-mips
-		os=-sysv # maybe?
-		;;
-	gmicro)
-		basic_machine=tron
-		os=-sysv # maybe?
-		;;
-	convex-c1)
-		basic_machine=c1-convex
-		os=-sysv # maybe?
-		;;
-	convex-c2)
-		basic_machine=c2-convex
-		os=-sysv # maybe?
-		;;
-	*)
-		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+case "$1" in
+# cpu alone is a valid alias for cpu-none-none.
+vax | tahoe | i386 | i860 | m68k | m68000 | m88k | sparc | ns32k \
+	| alliant | arm | c1 | c2 | mips | pyramid | tron | a29k \
+	| rtpc | rs6000 | i960)
+	cpu=$1
+	vendor=none
+	os=none
+	;;
+nindy960)
+	cpu=i960
+	vendor=intel
+	os=nindy
+	;;
+vxworks68)
+	cpu=m68k
+	vendor=wrs
+	os=vxworks
+	;;
+vxworks960)
+	cpu=i960
+	vendor=wrs
+	os=vxworks
+	;;
+am29k)
+	cpu=a29k
+	vendor=none
+	os=bsd
+	;;
+umax)
+	cpu=ns32k
+	vendor=encore
+	os=sysv # maybe?
+	;;
+pn)
+	cpu=pn
+	vendor=gould
+	os=sysv # maybe?
+	;;
+np1)
+	cpu=np1
+	vendor=gould
+	os=sysv # maybe?
+	;;
+merlin)
+	cpu=merlin
+	vendor=utek
+	os=sysv # maybe?
+	;;
+iris | iris4d)
+	cpu=mips
+	vendor=sgi
+	os=sysv # maybe?
+	;;
+news1000)
+	cpu=m68030
+	vendor=sony
+	os=sysv # maybe?
+	;;
+news | news700 | news800 | news900)
+	cpu=m68k
+	vendor=sony
+	os=sysv # maybe?
+	;;
+unixpc | safari | pc7300 | 3b1 | 7300 | 7300-att | att-7300)
+	cpu=m68k
+	vendor=att
+	os=sysv # maybe?
+	;;
+delta | 3300 | motorola-3300 | motorola-delta \
+      | 3300-motorola | delta-motorola)
+	cpu=m68k
+	vendor=motorola
+	os=sysv # maybe?
+	;;
+vax-dec)
+	cpu=vax
+	vendor=dec
+	os=ultrix # maybe?
+	;;
+balance)
+	cpu=ns32k
+	vendor=sequent
+	os=dynix
+	;;
+mmax)
+	cpu=ns32k
+	vendor=encore
+	os=sysv # maybe?
+	;;
+symmetry)
+	cpu=i386
+	vendor=sequent
+	os=dynix
+	;;
+sun2)
+	cpu=m68000
+	vendor=sun
+	os=sunos4
+	;;
+sun2os3)
+	cpu=m68000
+	vendor=sun
+	os=sunos3
+	;;
+sun2os4)
+	cpu=m68000
+	vendor=sun
+	os=sunos4
+	;;
+sun3)
+	cpu=m68k
+	vendor=sun
+	os=sunos4
+	;;
+sun3os3)
+	cpu=m68k
+	vendor=sun
+	os=sunos3
+	;;
+sun3os4)
+	cpu=m68k
+	vendor=sun
+	os=sunos4
+	;;
+sun4)
+	cpu=sparc
+	vendor=sun
+	os=sunos4
+	;;
+sun4os3)
+	cpu=sparc
+	vendor=sun
+	os=sunos3
+	;;
+sun4os4)
+	cpu=sparc
+	vendor=sun
+	os=sunos4
+	;;
+pbd)
+	cpu=sparc
+	vendor=unicom
+	os=sysv
+	;;
+roadrunner | sun386 | sun386i)
+	cpu=i386
+	vendor=sun
+	os=sunos
+	;;
+ps2)
+	cpu=i386
+	vendor=ibm
+	os=sysv # maybe?
+	;;
+i386sco)
+	cpu=i386
+	vendor=sco
+	os=sysv # maybe?
+	;;
+i386v)
+	cpu=i386
+	vendor=none
+	os=sysv
+	;;
+i386v32)
+	cpu=i386
+	vendor=none
+	os=sysv32
+	;;
+next)
+	cpu=m68k
+	vendor=next
+	os=sysv # maybe?
+	;;
+hp300bsd)
+	cpu=m68k
+	vendor=hp
+	os=bsd
+	;;
+hp300hpux | hpux | hp9k3[2-9][0-9])
+	cpu=m68k
+	vendor=hp
+	os=hpux
+	;;
+hp9k31[0-9] | hp9k2[0-9][0-9])
+	cpu=m68000
+	vendor=hp
+	os=hpux
+	;;
+isi | isi68)
+	cpu=m68k
+	vendor=isi
+	os=sysv # maybe?
+	;;
+apollo68)
+	cpu=m68k
+	vendor=apollo
+	os=sysv # maybe?
+	;;
+altos | altos3068)
+	cpu=m68k
+	vendor=altos
+	os=sysv # maybe?
+	;;
+altosgas)
+	cpu=m68k
+	vendor=altos
+	os=gas
+	;;
+miniframe)
+	cpu=m68000
+	vendor=convergent
+	os=sysv # maybe?
+	;;
+tower | tower-32)
+	cpu=m68k
+	vendor=ncr
+	os=sysv # maybe?
+	;;
+bigmips | news-3600 | risc-news)
+	cpu=mips
+	vendor=sony
+	os=newsos # maybe?
+	;;
+littlemips)
+	cpu=mips
+	vendor=little
+	os=bsd
+	;;
+dec3100 | decstatn | decstation | decstation-3100 | pmax)
+	cpu=mips
+	vendor=dec
+	os=ultrix
+	;;
+magnum | m3230)
+	cpu=mips
+	vendor=mips
+	os=sysv # maybe?
+	;;
+gmicro)
+	cpu=tron
+	vendor=none
+	os=sysv # maybe?
+	;;
+convex-c1)
+	cpu=c1
+	vendor=convex
+	os=sysv # maybe?
+	;;
+convex-c2)
+	cpu=c2
+	vendor=convex
+	os=sysv # maybe?
+	;;
+none)
+	cpu=none
+	vendor=none
+	os=none
+	;;
+
+# not an alias.  parse what we expect to be a canonical name.
+*)
+	cpu=`echo $1 | sed 's/-.*$//'`
+
+	if [ "${cpu}" = "$1" ] ; then
+		# no vendor so this is an invalid name.
+		echo '***' No vendor: configuration \`$1\' not recognized 1>&2
 		exit 1
-		;;
+	else
+		# parse out vendor
+		rest=`echo $1 | sed "s/${cpu}-//"`
+		vendor=`echo ${rest} | sed 's/-.*$//'`
+
+		if [ "${vendor}" = "${rest}" ] ; then
+			# a missing os is acceptable
+			os=none
+		else
+			os=`echo ${rest} | sed "s/${vendor}-//"`
+		fi
+	fi
+	;;
 esac
 
-# Decode manufacturer-specific aliases for certain operating systems.
+# At this point we should have three parts of a canonical name in cpu,
+# vendor, and os.
 
-case $os in
-	# First accept the basic system types.
-	# The portable systems comes first.
-	-bsd* | -sysv* | -mach* \
-		| -vms* | -sco* | -esix* | -isc* | -aix* | -sunos* | -hpux* \
-		| -unos* | -osf* | -v88r* | -aout | -coff | -bout \
-		| -nindy | -vxworks)
-		;;
-	-newsos*)
-		os=-bsd
-		;;
-	-ultrix*)
-		os=-bsd
-		;;
-	-osfrose*)
-		os=-osf
-		;;
-	-osf*)
-		os=-bsd
-		;;
-	-dynix*)
-		os=-bsd
-		;;
-	-ctix*)
-		os=-sysv
-		;;
-	*)
-		# Get rid of the `-' at the beginning of $os.
-		os=`echo $1 | sed 's/[^-]*-//'`
-		echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
-		exit 1
-		;;
+# verify that the cpu is known.
+
+case "${cpu}" in
+vax | tahoe | i386 | i860 | m68k | m68000 | m88k | sparc | ns32k \
+	| alliant | arm | c1 | c2 | mips | pyramid | tron | a29k \
+	| rtpc | rs6000 | i960)
+	;;
+*)
+	echo '***' Invalid cpu \`${cpu}\': configuration \`$1\' not recognized 1>&2
+	exit 1
+	;;
+esac
+
+# verify that the vendor is known.
+
+case "${vendor}" in
+none | convex | mips | dec | little | sony | ncr | convergent \
+	| altos | apollo | isi | hp | next | sco | ibm | sun \
+	| unicom | sequent | encore | motorola | att | sgi \
+	| utek | gould | wrs | intel | aout | bout | coff) ;;
+*)
+	echo '***' Invalid vendor \`${vendor}\': configuration \`$1\' not recognized 1>&2
+	exit 1
+	;;
+esac
+
+# verify that the os is known, if it exists.
+
+case "${os}" in
+aix* | aout | bout | bsd* | coff | ctix* | dynix* | esix* | hpux* \
+	| isc* | mach* | newsos* | nindy* | none | osf* | osf* | sco* \
+	| sunos* | sysv* | ultrix* | unos* | v88r* | vms* | vxworks*)
+	;;
+*)
+	echo '***' Invalid os \`${os}\': configuration \`$1\' not recognized 1>&2
+	exit 1
+	;;
 esac
 
-echo ${basic_machine}${os}
+echo ${cpu}-${vendor}-${os}
diff --git a/gdb/configure.in b/gdb/configure.in
index ebcb3b7..b2aff36 100644
--- a/gdb/configure.in
+++ b/gdb/configure.in
@@ -151,9 +151,9 @@ m68030)
 	esac
 	;;
 
-none | np1 | pn | np1 | pn | pyramid | merlin | i960 | m88k | a29k)
+none | tahoe | vax | np1 | pn | np1 | pn | pyramid | merlin | m88k)
 	gdb_target=${target_cpu} ;;
-
+a29k)	gdb_target=am29k ;;
 arm)	gdb_target=${target_cpu} ;;
 
 mips)
@@ -166,13 +166,6 @@ mips)
 
 c1 | c2)	gdb_target=convex ;;
 
-i386)
-	case "${target_vendor}" in
-	sco)	gdb_target=i386sco ;;
-	sun)	gdb_target=sun386 ;;
-	esac
-	;;
-
 sparc)
 	case "${target_vendor}" in
 	sun)
@@ -188,7 +181,11 @@ sparc)
 
 i386)
 	case "${target_vendor}" in
+	sco)	gdb_target=i386sco ;;
+	sun)	gdb_target=sun386 ;;
 	sequent)	gdb_target=symmetry ;;
+	coff)	gdb_target=i386v ;;
+	aout)	gdb_target=i386v ;;
 	*)
 		case "${target_os}" in
 		sysv)	gdb_target=i386v ;;
@@ -199,8 +196,8 @@ i386)
 
 i960)
 	case "${target_vendor}" in
-	wrs)	gdb_target=vxworks960 ;;
-	intel)	gdb_target=nindy960 ;;
+	bout | wrs)	gdb_target=vxworks960 ;;
+	coff | intel)	gdb_target=nindy960 ;;
 	esac
 	;;
 
diff --git a/readline/config.sub b/readline/config.sub
index 58338df..c3e0028 100755
--- a/readline/config.sub
+++ b/readline/config.sub
@@ -13,264 +13,332 @@
 # a failure to support a valid configuration from a meaningless
 # configuration.
 
-# Separate what the user gave into CPU-company and OS (if any).
-basic_machine=`echo $1 | sed 's/-[^-]*$//'`
-if [ $basic_machine != $1 ]
-then os=`echo $1 | sed 's/^.*-/-/'`
-else os=; fi
+# decode aliases into canonical names
 
-# Decode aliases for certain machine-company combinations.
-case $basic_machine in
-	# Recognize the basic CPU types without company name.
-	vax | tahoe | i386 | i860 | m68k | m68000 | m88k | sparc | ns32k \
-	    | alliant | arm | c1 | c2 | mips | pyramid | tron | a29k \
-	    | rtpc | rs6000 | i960 | none)
-		;;
-	# Recognize the basic CPU types with company name.
-	vax-* | tahoe-* | i386-* | i860-* | m68k-* | m68000-* | m88k-* \
-		| sparc-* | ns32k-* | alliant-* | arm-* | c1-* | c2-* \
-		| mips-* | pyramid-* | tron-* | a29k-* | rtpc-* \
-		| rs6000-* | i960-*)
-		;;
-	# Recognize the machine names
-	# which stand for a CPU time and a company.
-	nindy960)
-		basic_machine=i960-intel
-		os=-nindy
-		;;
-	vxworks68)
-		basic_machine=m68k-wrs
-		os=-vxworks
-		;;
-	vxworks960)
-		basic_machine=i960-wrs
-		os=-vxworks
-		;;
-	am29k)
-		basic_machine=a29k-unknown
-		os=-bsd
-		;;
-	umax)
-		basic_machine=ns32k-umax
-		os=-sysv # maybe?
-		;;
-	pn)
-		basic_machine=pn-gould
-		os=-sysv # maybe?
-		;;
-	np1)
-		basic_machine=np1-gould
-		os=-sysv # maybe?
-		;;
-	merlin)
-		basic_machine=merlin-utek
-		os=-sysv # maybe?
-		;;
-	iris | iris4d)
-		basic_machine=mips-sgi
-		os=-sysv # maybe?
-		;;
-	news1000)
-		basic_machine=m68030-sony
-		os=-sysv # maybe?
-		;;
-	news | news700 | news800 | news900)
-		basic_machine=m68k-sony
-		os=-sysv # maybe?
-		;;
-	unixpc | safari | pc7300 | 3b1 | 7300 | 7300-att | att-7300)
-		basic_machine=m68k-att
-		os=-sysv # maybe?
-		;;
-	delta | 3300 | motorola-3300 | motorola-delta \
-	      | 3300-motorola | delta-motorola)
-		basic_machine=m68k-motorola
-		os=-sysv # maybe?
-		;;
-	vax-dec)
-		basic_machine=vax
-		os=-ultrix # maybe?
-		;;
-	balance)
-		basic_machine=ns32k-sequent
-		os=-dynix
-		;;
-        mmax)
-		basic_machine=ns32k-encore
-		os=-sysv # maybe?
-		;;
-	symmetry)
-		basic_machine=i386-sequent
-		os=-dynix
-		;;
-	sun2)
-		basic_machine=m68000-sun
-		os=-sunos4
-		;;
-	sun2os3)
-		basic_machine=m68000-sun
-		os=-sunos3
-		;;
-	sun2os4)
-		basic_machine=m68000-sun
-		os=-sunos4
-		;;
-	sun3)
-		basic_machine=m68k-sun
-		os=-sunos4
-		;;
-	sun3os3)
-		basic_machine=m68k-sun
-		os=-sunos3
-		;;
-	sun3os4)
-		basic_machine=m68k-sun
-		os=-sunos4
-		;;
-	sun4)
-		basic_machine=sparc-sun
-		os=-sunos4
-		;;
-	sun4os3)
-		basic_machine=sparc-sun
-		os=-sunos3
-		;;
-	sun4os4)
-		basic_machine=sparc-sun
-		os=-sunos4
-		;;
-	pbd)
-		basic_machine=sparc-unicom
-		os=-sysv
-		;;
-	roadrunner | sun386 | sun386i)
-		basic_machine=i386-sun
-		os=-sunos
-		;;
-	ps2)
-		basic_machine=i386-ibm
-		os=-sysv # maybe?
-		;;
-	i386sco)
-		basic_machine=i386-sco
-		os=-sysv # maybe?
-		;;
-	i386v)
-		basic_machine=i386-unknown
-		os=-sysv
-		;;
-	i386v32)
-		basic_machine=i386-unknown
-		os=-sysv32
-		;;
-	next)
-		basic_machine=m68k-next
-		os=-sysv # maybe?
-		;;
-	hp300bsd)
-		basic_machine=m68k-hp
-		os=-bsd
-		;;
-	hp300hpux | hpux | hp9k3[2-9][0-9])
-		basic_machine=m68k-hp
-		os=-hpux
-		;;
-	hp9k31[0-9] | hp9k2[0-9][0-9])
-		basic_machine=m68000-hp
-		os=-hpux
-		;;
-	isi | isi68)
-		basic_machine=m68k-isi
-		os=-sysv # maybe?
-		;;
-	apollo68)
-		basic_machine=m68k-apollo
-		os=-sysv # maybe?
-		;;
-	altos | altos3068)
-		basic_machine=m68k-altos
-		os=-sysv # maybe?
-		;;
-	altosgas)
-		basic_machine=m68k-altos
-		os=-gas
-		;;
-	miniframe)
-		basic_machine=m68000-convergent
-		os=-sysv # maybe?
-		;;
-	tower | tower-32)
-		basic_machine=m68k-ncr
-		os=-sysv # maybe?
-		;;
-	bigmips | news-3600 | risc-news)
-		basic_machine=mips-sony
-		os=-newsos # maybe?
-		;;
-	littlemips)
-		basic_machine=mips-little
-		os=-bsd
-		;;
-	dec3100 | decstatn | decstation | decstation-3100 | pmax)
-		basic_machine=mips-dec
-		os=-ultrix
-		;;
-	magnum | m3230)
-		basic_machine=mips-mips
-		os=-sysv # maybe?
-		;;
-	gmicro)
-		basic_machine=tron
-		os=-sysv # maybe?
-		;;
-	convex-c1)
-		basic_machine=c1-convex
-		os=-sysv # maybe?
-		;;
-	convex-c2)
-		basic_machine=c2-convex
-		os=-sysv # maybe?
-		;;
-	*)
-		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+case "$1" in
+# cpu alone is a valid alias for cpu-none-none.
+vax | tahoe | i386 | i860 | m68k | m68000 | m88k | sparc | ns32k \
+	| alliant | arm | c1 | c2 | mips | pyramid | tron | a29k \
+	| rtpc | rs6000 | i960)
+	cpu=$1
+	vendor=none
+	os=none
+	;;
+nindy960)
+	cpu=i960
+	vendor=intel
+	os=nindy
+	;;
+vxworks68)
+	cpu=m68k
+	vendor=wrs
+	os=vxworks
+	;;
+vxworks960)
+	cpu=i960
+	vendor=wrs
+	os=vxworks
+	;;
+am29k)
+	cpu=a29k
+	vendor=none
+	os=bsd
+	;;
+umax)
+	cpu=ns32k
+	vendor=encore
+	os=sysv # maybe?
+	;;
+pn)
+	cpu=pn
+	vendor=gould
+	os=sysv # maybe?
+	;;
+np1)
+	cpu=np1
+	vendor=gould
+	os=sysv # maybe?
+	;;
+merlin)
+	cpu=merlin
+	vendor=utek
+	os=sysv # maybe?
+	;;
+iris | iris4d)
+	cpu=mips
+	vendor=sgi
+	os=sysv # maybe?
+	;;
+news1000)
+	cpu=m68030
+	vendor=sony
+	os=sysv # maybe?
+	;;
+news | news700 | news800 | news900)
+	cpu=m68k
+	vendor=sony
+	os=sysv # maybe?
+	;;
+unixpc | safari | pc7300 | 3b1 | 7300 | 7300-att | att-7300)
+	cpu=m68k
+	vendor=att
+	os=sysv # maybe?
+	;;
+delta | 3300 | motorola-3300 | motorola-delta \
+      | 3300-motorola | delta-motorola)
+	cpu=m68k
+	vendor=motorola
+	os=sysv # maybe?
+	;;
+vax-dec)
+	cpu=vax
+	vendor=dec
+	os=ultrix # maybe?
+	;;
+balance)
+	cpu=ns32k
+	vendor=sequent
+	os=dynix
+	;;
+mmax)
+	cpu=ns32k
+	vendor=encore
+	os=sysv # maybe?
+	;;
+symmetry)
+	cpu=i386
+	vendor=sequent
+	os=dynix
+	;;
+sun2)
+	cpu=m68000
+	vendor=sun
+	os=sunos4
+	;;
+sun2os3)
+	cpu=m68000
+	vendor=sun
+	os=sunos3
+	;;
+sun2os4)
+	cpu=m68000
+	vendor=sun
+	os=sunos4
+	;;
+sun3)
+	cpu=m68k
+	vendor=sun
+	os=sunos4
+	;;
+sun3os3)
+	cpu=m68k
+	vendor=sun
+	os=sunos3
+	;;
+sun3os4)
+	cpu=m68k
+	vendor=sun
+	os=sunos4
+	;;
+sun4)
+	cpu=sparc
+	vendor=sun
+	os=sunos4
+	;;
+sun4os3)
+	cpu=sparc
+	vendor=sun
+	os=sunos3
+	;;
+sun4os4)
+	cpu=sparc
+	vendor=sun
+	os=sunos4
+	;;
+pbd)
+	cpu=sparc
+	vendor=unicom
+	os=sysv
+	;;
+roadrunner | sun386 | sun386i)
+	cpu=i386
+	vendor=sun
+	os=sunos
+	;;
+ps2)
+	cpu=i386
+	vendor=ibm
+	os=sysv # maybe?
+	;;
+i386sco)
+	cpu=i386
+	vendor=sco
+	os=sysv # maybe?
+	;;
+i386v)
+	cpu=i386
+	vendor=none
+	os=sysv
+	;;
+i386v32)
+	cpu=i386
+	vendor=none
+	os=sysv32
+	;;
+next)
+	cpu=m68k
+	vendor=next
+	os=sysv # maybe?
+	;;
+hp300bsd)
+	cpu=m68k
+	vendor=hp
+	os=bsd
+	;;
+hp300hpux | hpux | hp9k3[2-9][0-9])
+	cpu=m68k
+	vendor=hp
+	os=hpux
+	;;
+hp9k31[0-9] | hp9k2[0-9][0-9])
+	cpu=m68000
+	vendor=hp
+	os=hpux
+	;;
+isi | isi68)
+	cpu=m68k
+	vendor=isi
+	os=sysv # maybe?
+	;;
+apollo68)
+	cpu=m68k
+	vendor=apollo
+	os=sysv # maybe?
+	;;
+altos | altos3068)
+	cpu=m68k
+	vendor=altos
+	os=sysv # maybe?
+	;;
+altosgas)
+	cpu=m68k
+	vendor=altos
+	os=gas
+	;;
+miniframe)
+	cpu=m68000
+	vendor=convergent
+	os=sysv # maybe?
+	;;
+tower | tower-32)
+	cpu=m68k
+	vendor=ncr
+	os=sysv # maybe?
+	;;
+bigmips | news-3600 | risc-news)
+	cpu=mips
+	vendor=sony
+	os=newsos # maybe?
+	;;
+littlemips)
+	cpu=mips
+	vendor=little
+	os=bsd
+	;;
+dec3100 | decstatn | decstation | decstation-3100 | pmax)
+	cpu=mips
+	vendor=dec
+	os=ultrix
+	;;
+magnum | m3230)
+	cpu=mips
+	vendor=mips
+	os=sysv # maybe?
+	;;
+gmicro)
+	cpu=tron
+	vendor=none
+	os=sysv # maybe?
+	;;
+convex-c1)
+	cpu=c1
+	vendor=convex
+	os=sysv # maybe?
+	;;
+convex-c2)
+	cpu=c2
+	vendor=convex
+	os=sysv # maybe?
+	;;
+none)
+	cpu=none
+	vendor=none
+	os=none
+	;;
+
+# not an alias.  parse what we expect to be a canonical name.
+*)
+	cpu=`echo $1 | sed 's/-.*$//'`
+
+	if [ "${cpu}" = "$1" ] ; then
+		# no vendor so this is an invalid name.
+		echo '***' No vendor: configuration \`$1\' not recognized 1>&2
 		exit 1
-		;;
+	else
+		# parse out vendor
+		rest=`echo $1 | sed "s/${cpu}-//"`
+		vendor=`echo ${rest} | sed 's/-.*$//'`
+
+		if [ "${vendor}" = "${rest}" ] ; then
+			# a missing os is acceptable
+			os=none
+		else
+			os=`echo ${rest} | sed "s/${vendor}-//"`
+		fi
+	fi
+	;;
 esac
 
-# Decode manufacturer-specific aliases for certain operating systems.
+# At this point we should have three parts of a canonical name in cpu,
+# vendor, and os.
 
-case $os in
-	# First accept the basic system types.
-	# The portable systems comes first.
-	-bsd* | -sysv* | -mach* \
-		| -vms* | -sco* | -esix* | -isc* | -aix* | -sunos* | -hpux* \
-		| -unos* | -osf* | -v88r* | -aout | -coff | -bout \
-		| -nindy | -vxworks)
-		;;
-	-newsos*)
-		os=-bsd
-		;;
-	-ultrix*)
-		os=-bsd
-		;;
-	-osfrose*)
-		os=-osf
-		;;
-	-osf*)
-		os=-bsd
-		;;
-	-dynix*)
-		os=-bsd
-		;;
-	-ctix*)
-		os=-sysv
-		;;
-	*)
-		# Get rid of the `-' at the beginning of $os.
-		os=`echo $1 | sed 's/[^-]*-//'`
-		echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
-		exit 1
-		;;
+# verify that the cpu is known.
+
+case "${cpu}" in
+vax | tahoe | i386 | i860 | m68k | m68000 | m88k | sparc | ns32k \
+	| alliant | arm | c1 | c2 | mips | pyramid | tron | a29k \
+	| rtpc | rs6000 | i960)
+	;;
+*)
+	echo '***' Invalid cpu \`${cpu}\': configuration \`$1\' not recognized 1>&2
+	exit 1
+	;;
+esac
+
+# verify that the vendor is known.
+
+case "${vendor}" in
+none | convex | mips | dec | little | sony | ncr | convergent \
+	| altos | apollo | isi | hp | next | sco | ibm | sun \
+	| unicom | sequent | encore | motorola | att | sgi \
+	| utek | gould | wrs | intel | aout | bout | coff) ;;
+*)
+	echo '***' Invalid vendor \`${vendor}\': configuration \`$1\' not recognized 1>&2
+	exit 1
+	;;
+esac
+
+# verify that the os is known, if it exists.
+
+case "${os}" in
+aix* | aout | bout | bsd* | coff | ctix* | dynix* | esix* | hpux* \
+	| isc* | mach* | newsos* | nindy* | none | osf* | osf* | sco* \
+	| sunos* | sysv* | ultrix* | unos* | v88r* | vms* | vxworks*)
+	;;
+*)
+	echo '***' Invalid os \`${os}\': configuration \`$1\' not recognized 1>&2
+	exit 1
+	;;
 esac
 
-echo ${basic_machine}${os}
+echo ${cpu}-${vendor}-${os}
-- 
2.7.4