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#! /bin/sh

# Configuration validation subroutine script, version 1.1.

#   Copyright (C) 1991, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.

# This file is (in principle) common to ALL GNU software.

# The presence of a machine in this file suggests that SOME GNU software

# can handle that machine.  It does not imply ALL GNU software can.

#

# 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 2 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, write to the Free Software

# Foundation, Inc., 59 Temple Place - Suite 330,

# Boston, MA 02111-1307, USA.

# 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.

# 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.

# 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.

if [ x$1 = x ]

then

        echo Configuration name missing. 1>&2

        echo "Usage: $0 CPU-MFR-OPSYS" 1>&2

        echo "or     $0 ALIAS" 1>&2

        echo where ALIAS is a recognized configuration type. 1>&2

        exit 1

fi

# First pass through any local machine types.

case $1 in

        *local*)

                echo $1

                exit 0

                ;;

        *)

        ;;

esac

# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).

# Here we must recognize all the valid KERNEL-OS combinations.

maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`

case $maybe_os in

  linux-gnu*)

    os=-$maybe_os

    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`

    ;;

  *)

    basic_machine=`echo $1 | sed 's/-[^-]*$//'`

    if [ $basic_machine != $1 ]

    then os=`echo $1 | sed 's/.*-/-/'`

    else os=; fi

    ;;

esac

### Let's recognize common machines as not being operating systems so

### that things like config.sub decstation-3100 work.  We also

### recognize some manufacturers as not being operating systems, so we

### can provide default operating systems below.

case $os in

        -sun*os*)

                # Prevent following clause from handling this invalid input.

                ;;

        -dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \

        -att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \

        -unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \

        -convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\

        -c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \

        -harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \

        -apple )

                os=

                basic_machine=$1

                ;;

        -hiux*)

                os=-hiuxwe2

                ;;

        -sco5)

                os=-sco3.2v5

                basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`

                ;;

        -sco4)

                os=-sco3.2v4

                basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`

                ;;

        -sco3.2.[4-9]*)

                os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`

                basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`

                ;;

        -sco3.2v[4-9]*)

                # Don't forget version if it is 3.2v4 or newer.

                basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`

                ;;

        -sco*)

                os=-sco3.2v2

                basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`

                ;;

        -isc)

                os=-isc2.2

                basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`

                ;;

        -clix*)

                basic_machine=clipper-intergraph

                ;;

        -isc*)

                basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`

                ;;

        -lynx*)

                os=-lynxos

                ;;

        -ptx*)

                basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'`

                ;;

        -windowsnt*)

                os=`echo $os | sed -e 's/windowsnt/winnt/'`

                ;;

        -psos*)

                os=-psos

                ;;

esac

# Decode aliases for certain CPU-COMPANY combinations.

case $basic_machine in

        # Recognize the basic CPU types without company name.

        # Some are omitted here because they have special meanings below.

        tahoe | i860 | m68k | m68000 | m88k | ns32k | arm \

                | arme[lb] | pyramid \

                | tron | a29k | 580 | i960 | h8300 | hppa | hppa1.0 | hppa1.1 \

                | hppa2.0 | alpha | we32k | ns16k | clipper | i370 | sh \

                | powerpc | powerpcle | 1750a | dsp16xx | mips64 | mipsel \

                | pdp11 | mips64el | mips64orion | mips64orionel \

                | sparc | sparclet | sparclite | sparc64 | or32 | dlx)

                basic_machine=$basic_machine-unknown

                ;;

        # We use `pc' rather than `unknown'

        # because (1) that's what they normally are, and

        # (2) the word "unknown" tends to confuse beginning users.

        i[3456]86)

          basic_machine=$basic_machine-pc

          ;;

        # Object if more than one company name word.

        *-*-*)

                echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2

                exit 1

                ;;

        # Recognize the basic CPU types with company name.

        vax-* | tahoe-* | i[3456]86-* | i860-* | m68k-* | m68000-* | m88k-* \

              | sparc-* | ns32k-* | fx80-* | arm-* | c[123]* \

              | mips-* | pyramid-* | tron-* | a29k-* | romp-* | rs6000-* | power-* \

              | none-* | 580-* | cray2-* | h8300-* | i960-* | xmp-* | ymp-* \

              | hppa-* | hppa1.0-* | hppa1.1-* | hppa2.0-* \

              | alpha-* | alphaev5-* | alphaev56-* | alphapca56-* | alphaev6-* \

              | we32k-* | cydra-* | ns16k-* \

              | pn-* | np1-* | xps100-* | clipper-* | orion-* | sparclite-* \

              | pdp11-* | sh-* | powerpc-* | powerpcle-* | sparc64-* | mips64-* | mipsel-* \

              | mips64el-* | mips64orion-* | mips64orionel-* | f301-* \

              | butterfly-bbn* \

              | cadmus-* | ews*-nec | ibmrt-ibm* | masscomp-masscomp \

              | tandem-* | symmetric-* | drs6000-icl | *-*ardent | gould-gould \

              | concurrent-* | ksr1-* | esa-ibm | fxc-alliant | *370-amdahl \

              | *-convex | sx4*-nec)

                ;;

        # 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)

                basic_machine=m68000-att

                ;;

        3b*)

                basic_machine=we32k-att

                ;;

        alliant | fx80)

                basic_machine=fx80-alliant

                ;;

        altos | altos3068)

                basic_machine=m68k-altos

                ;;

        am29k)

                basic_machine=a29k-none

                os=-bsd

                ;;

        amdahl)

                basic_machine=580-amdahl

                os=-sysv

                ;;

        amiga | amiga-*)

#               basic_machine=m68k-cbm

                basic_machine=m68k-unknown

                ;;

        amigaos)

                basic_machine=m68k-unknown

                os=-amigaos

                ;;

        amigados)

                basic_machine=m68k-cbm

                os=-amigados

                ;;

        amigaunix | amix)

                basic_machine=m68k-cbm

                os=-sysv4

                ;;

        apollo68)

                basic_machine=m68k-apollo

                os=-sysv

                ;;

        aux)

                basic_machine=m68k-apple

                os=-aux

                ;;

        balance)

                basic_machine=ns32k-sequent

                os=-dynix

                ;;

        convex-c1)

                basic_machine=c1-convex

                os=-bsd

                ;;

        convex-c2)

                basic_machine=c2-convex

                os=-bsd

                ;;

        convex-c32)

                basic_machine=c32-convex

                os=-bsd

                ;;

        convex-c34)

                basic_machine=c34-convex

                os=-bsd

                ;;

        convex-c38)

                basic_machine=c38-convex

                os=-bsd

                ;;

        cray | ymp)

                basic_machine=ymp-cray

                os=-unicos

                ;;

        cray2)

                basic_machine=cray2-cray

                os=-unicos

                ;;

        [ctj]90-cray)

                basic_machine=c90-cray

                os=-unicos

                ;;

        crds | unos)

                basic_machine=m68k-crds

                ;;

        da30 | da30-*)

                basic_machine=m68k-da30

                ;;

        decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)

                basic_machine=mips-dec

                ;;

        delta | 3300 | motorola-3300 | motorola-delta \

              | 3300-motorola | delta-motorola)

                basic_machine=m68k-motorola

                ;;

        delta88)

                basic_machine=m88k-motorola

                os=-sysv3

                ;;

        dpx20 | dpx20-*)

                basic_machine=rs6000-bull

                os=-bosx

                ;;

        dpx2* | dpx2*-bull)

                basic_machine=m68k-bull

                os=-sysv3

                ;;

        hbullx20-bull)

                basic_machine=m68k-bull

                ;;

        ebmon29k)

                basic_machine=a29k-amd

                os=-ebmon

                ;;

        elxsi)

                basic_machine=elxsi-elxsi

                os=-bsd

                ;;

        encore | umax | mmax | multimax)

                basic_machine=ns32k-encore

                ;;

        fx2800)

                basic_machine=i860-alliant

                ;;

        genix)

                basic_machine=ns32k-ns

                ;;

        gmicro)

                basic_machine=tron-gmicro

                os=-sysv

                ;;

        h3050r* | hiux*)

                basic_machine=hppa1.1-hitachi

                os=-hiuxwe2

                ;;

        h8300hms)

                basic_machine=h8300-hitachi

                os=-hms

                ;;

        harris)

                basic_machine=m88k-harris

                os=-sysv3

                ;;

        hp300-*)

                basic_machine=m68k-hp

                ;;

        hp300bsd)

                basic_machine=m68k-hp

                os=-bsd

                ;;

        hp300hpux)

                basic_machine=m68k-hp

                os=-hpux

                ;;

        hp9k2[0-9][0-9] | hp9k31[0-9])

                basic_machine=m68000-hp

                ;;

        hp9k3[2-9][0-9])

                basic_machine=m68k-hp

                ;;

        hp9k7[0-9][0-9] | hp7[0-9][0-9] | hp9k8[0-9]7 | hp8[0-9]7)

                basic_machine=hppa1.1-hp

                ;;

        hp9k8[0-9][0-9] | hp8[0-9][0-9])

                basic_machine=hppa1.0-hp

                ;;

        hppa-next)

                os=-nextstep3

                ;;

        ibm032-*)

                basic_machine=ibmrt-ibm

                ;;

        i370-ibm* | ibm*)

                basic_machine=i370-ibm

                os=-mvs

                ;;

# I'm not sure what "Sysv32" means.  Should this be sysv3.2?

        i[3456]86v32)

                basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`

                os=-sysv32

                ;;

        i[3456]86v4*)

                basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`

                os=-sysv4

                ;;

        i[3456]86v)

                basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`

                os=-sysv

                ;;

        i[3456]86sol2)

                basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`

                os=-solaris2

                ;;

        iris | iris4d)

                basic_machine=mips-sgi

                case $os in

                    -irix*)

                        ;;

                    *)

                        os=-irix4

                        ;;

                esac

                ;;

        isi68 | isi)

                basic_machine=m68k-isi

                os=-sysv

                ;;

        luna88k-omron* | m88k-omron*)

                basic_machine=m88k-omron

                ;;

        magicstation*)

                basic_machine=magicstation-unknown

                ;;

        magnum | m3230)

                basic_machine=mips-mips

                os=-sysv

                ;;

        merlin)

                basic_machine=ns32k-utek

                os=-sysv

                ;;

        miniframe)

                basic_machine=m68000-convergent

                ;;

        mipsel*-linux*)

                basic_machine=mipsel-unknown

                os=-linux

                ;;

        mips*-linux*)

                basic_machine=mips-unknown

                os=-linux

                ;;

        mips3*-*)

                basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`

                ;;

        mips3*)

                basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown

                ;;

        ncr3000)

                basic_machine=i486-ncr

                os=-sysv4

                ;;

        news | news700 | news800 | news900)

                basic_machine=m68k-sony

                os=-newsos

                ;;

        news1000)

                basic_machine=m68030-sony

                os=-newsos

                ;;

        news-3600 | risc-news)

                basic_machine=mips-sony

                os=-newsos

                ;;

        next | m*-next )

                basic_machine=m68k-next

                case $os in

                    -nextstep* )

                        ;;

                    -ns2*)

                      os=-nextstep2

                        ;;

                    *)

                      os=-nextstep3

                        ;;

                esac

                ;;

        nh3000)

                basic_machine=m68k-harris

                os=-cxux

                ;;

        nh[45]000)

                basic_machine=m88k-harris

                os=-cxux

                ;;

        nindy960)

                basic_machine=i960-intel

                os=-nindy

                ;;

        np1)

                basic_machine=np1-gould

                ;;

        osr5 | sco5)    # SCO Open Server

                basic_machine=i386-pc

                os=-sco3.2v5

                ;;

        odt | odt3 | odt4)      # SCO Open Desktop

                basic_machine=i386-pc

                os=-sco3.2v4

                ;;

        pa-hitachi)

                basic_machine=hppa1.1-hitachi

                os=-hiuxwe2

                ;;

        paragon)

                basic_machine=i860-intel

                os=-osf

                ;;

        pbd)

                basic_machine=sparc-tti

                ;;

        pbb)

                basic_machine=m68k-tti

                ;;

        pc532 | pc532-*)

                basic_machine=ns32k-pc532

                ;;

        pentium | p5)

                basic_machine=i586-intel

                ;;

        pentiumpro | p6)

                basic_machine=i686-intel

                ;;

        pentium-* | p5-*)

                basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`

                ;;

        pentiumpro-* | p6-*)

                basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`

                ;;

        k5)

                # We don't have specific support for AMD's K5 yet, so just call it a Pentium

                basic_machine=i586-amd

                ;;

        nexen)

                # We don't have specific support for Nexgen yet, so just call it a Pentium

                basic_machine=i586-nexgen

                ;;

        pn)

                basic_machine=pn-gould

                ;;

        power)  basic_machine=rs6000-ibm

                ;;

        ppc)    basic_machine=powerpc-unknown

                ;;

        ppc-*)  basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`

                ;;

        ppcle | powerpclittle | ppc-le | powerpc-little)

                basic_machine=powerpcle-unknown

                ;;

        ppcle-* | powerpclittle-*)

                basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`

                ;;

        ps2)

                basic_machine=i386-ibm

                ;;

        rm[46]00)

                basic_machine=mips-siemens

                ;;

        rtpc | rtpc-*)

                basic_machine=romp-ibm

                ;;

        sequent)

                basic_machine=i386-sequent

                ;;

        sh)

                basic_machine=sh-hitachi

                os=-hms

                ;;

        sps7)

                basic_machine=m68k-bull

                os=-sysv2

                ;;

        spur)

                basic_machine=spur-unknown

                ;;

        sun2)

                basic_machine=m68000-sun

                ;;

        sun2os3)

                basic_machine=m68000-sun

                os=-sunos3

                ;;

        sun2os4)

                basic_machine=m68000-sun

                os=-sunos4

                ;;

        sun3os3)

                basic_machine=m68k-sun

                os=-sunos3

                ;;

        sun3os4)

                basic_machine=m68k-sun

                os=-sunos4

                ;;

        sun4os3)

                basic_machine=sparc-sun

                os=-sunos3

                ;;

        sun4os4)

                basic_machine=sparc-sun

                os=-sunos4

                ;;

        sun4sol2)

                basic_machine=sparc-sun

                os=-solaris2

                ;;

        sun3 | sun3-*)

                basic_machine=m68k-sun

                ;;

        sun4)

                basic_machine=sparc-sun

                ;;

        sun386 | sun386i | roadrunner)

                basic_machine=i386-sun

                ;;

        symmetry)

                basic_machine=i386-sequent

                os=-dynix

                ;;

        tower | tower-32)

                basic_machine=m68k-ncr

                ;;

        udi29k)

                basic_machine=a29k-amd

                os=-udi

                ;;

        ultra3)

                basic_machine=a29k-nyu

                os=-sym1

                ;;

        uw2 | unixware | unixware2)

                basic_machine=i386-pc

                os=-sysv4.2uw2.1

                ;;

        uw7 | unixware7)

                basic_machine=i386-pc

                os=-sysv5uw7

                ;;

        vaxv)

                basic_machine=vax-dec

                os=-sysv

                ;;

        vms)

                basic_machine=vax-dec

                os=-vms

                ;;

        vpp*|vx|vx-*)

                basic_machine=f301-fujitsu

                ;;

        vxworks960)

                basic_machine=i960-wrs

                os=-vxworks

                ;;

        vxworks68)

                basic_machine=m68k-wrs

                os=-vxworks

                ;;

        vxworks29k)

                basic_machine=a29k-wrs

                os=-vxworks

                ;;

        xmp)

                basic_machine=xmp-cray

                os=-unicos

                ;;

        xps | xps100)

                basic_machine=xps100-honeywell

                ;;

        none)

                basic_machine=none-none

                os=-none

                ;;

# 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.

        mips)

                if test "x$os" = "x-linux" ; then

                        basic_machine=mips-unknown

                else

                        basic_machine=mips-mips

                fi

                ;;

        romp)

                basic_machine=romp-ibm

                ;;

        rs6000)

                basic_machine=rs6000-ibm

                ;;

        vax)

                basic_machine=vax-dec

                ;;

        pdp11)

                basic_machine=pdp11-dec

                ;;

        we32k)

                basic_machine=we32k-att

                ;;

        sparc)

                basic_machine=sparc-sun

                ;;

        cydra)

                basic_machine=cydra-cydrome

                ;;

        orion)

                basic_machine=orion-highlevel

                ;;

        orion105)

                basic_machine=clipper-highlevel

                ;;

        *)

                echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2

                exit 1

                ;;

esac

# Here we canonicalize certain aliases for manufacturers.

case $basic_machine in

        *-digital*)

                basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'`

                ;;

        *-commodore*)

                basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'`

                ;;

        *)

                ;;

esac

# Decode manufacturer-specific aliases for certain operating systems.

if [ x"$os" != x"" ]

then

case $os in

        # First match some system type aliases

        # that might get confused with valid system types.

        # -solaris* is a basic system type, with this one exception.

        -solaris1 | -solaris1.*)

                os=`echo $os | sed -e 's|solaris1|sunos4|'`

                ;;

        -solaris)

                os=-solaris2

                ;;

        svr4*)

                os=-sysv4

                ;;

        -unixware | -uw | -unixware2* | -uw2*)

                os=-sysv4.2uw2.1

                ;;

        -unixware7* | -uw7*)

                os=-sysv5uw7

                ;;

        -gnu/linux*)

                os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`

                ;;

        # First accept the basic system types.

        # The portable systems comes first.

        # Each alternative MUST END IN A *, to match a version number.

        # -sysv* is not here because it comes later, after sysvr4.

        -gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \

              | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\

              | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \

              | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* | -aos* \

              | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \

              | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \

              | -hiux* | -386bsd* | -netbsd* | -openbsd* | -freebsd* | -riscix* \

              | -lynxos* | -bosx* | -nextstep* | -cxux* | -aout* | -elf* \

              | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \

              | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \

              | -cygwin32* | -pe* | -psos* | -moss* | -proelf* | -rtems* \

              | -linux-gnu* | -uxpv* | -qnx* | -powerux* | -beos* | -rhapsody* \

              | -superux* | -darwin* )

        # Remember, each alternative MUST END IN *, to match a version number.

                ;;

        -*linux*)

                os=`echo $os | sed -e 's|linux|linux-gnu|'`

                ;;

        -sunos5*)

                os=`echo $os | sed -e 's|sunos5|solaris2|'`

                ;;

        -sunos6*)

                os=`echo $os | sed -e 's|sunos6|solaris3|'`

                ;;

        -osfrose*)

                os=-osfrose

                ;;

        -osf*)

                os=-osf

                ;;

        -utek*)

                os=-bsd

                ;;

        -dynix*)

                os=-bsd

                ;;

        -acis*)

                os=-aos

                ;;

        -ctix* | -uts*)

                os=-sysv

                ;;

        -ns2 )

                os=-nextstep2

                ;;

        # Preserve the version number of sinix5.

        -sinix5.*)

                os=`echo $os | sed -e 's|sinix|sysv|'`

                ;;

        -sinix*)

                os=-sysv4

                ;;

        -triton*)

                os=-sysv3

                ;;

        -oss*)

                os=-sysv3

                ;;

        -svr4)

                os=-sysv4

                ;;

        -svr3)

                os=-sysv3

                ;;

        -sysvr4)

                os=-sysv4

                ;;

        -sysvr5)

                os=-sysv5

                ;;

        # This must come after -sysvr[45].

        -sysv*)

                ;;

        -xenix)

                os=-xenix

                ;;

        -none)

                ;;

        *)

                # Get rid of the `-' at the beginning of $os.

                os=`echo $os | sed 's/[^-]*-//'`

                echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2

                exit 1

                ;;

esac

else

# Here we handle the default operating systems that come with various machines.

# 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.

case $basic_machine in

        *-acorn)

                os=-riscix1.2

                ;;

        arm*-semi)

                os=-aout

                ;;

        pdp11-*)

                os=-none

                ;;

        *-dec | vax-*)

                os=-ultrix4.2

                ;;

        m68*-apollo)

                os=-domain

                ;;

        i386-sun)

                os=-sunos4.0.2

                ;;

        m68000-sun)

                os=-sunos3

                # This also exists in the configure program, but was not the

                # default.

                # os=-sunos4

                ;;

        *-tti)  # must be before sparc entry or we get the wrong os.

                os=-sysv3

                ;;

        sparc-* | *-sun)

                os=-sunos4.1.1

                ;;

        *-be)

                os=-beos

                ;;

        *-ibm)

                os=-aix

                ;;

        *-hp)

                os=-hpux

                ;;

        *-hitachi)

                os=-hiux

                ;;

        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

                ;;

        *-next)

                os=-nextstep3

                ;;

        *-gould)

                os=-sysv

                ;;

        *-highlevel)

                os=-bsd

                ;;

        *-encore)

                os=-bsd

                ;;

        *-sgi)

                os=-irix

                ;;

        *-siemens)

                os=-sysv4

                ;;

        *-masscomp)

                os=-rtu

                ;;

        f301-fujitsu)

                os=-uxpv

                ;;

        *)

                os=-none

                ;;

esac

fi