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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 $basic_machine in
        # Recognize the basic CPU types without company name.
        # Some are omitted here because they have special meanings below.
        tahoe | i860 | m68k | m68000 | m88k | ns32k | arm \
                | arme[lb] | pyramid \
                | tron | a29k | 580 | i960 | h8300 | hppa | hppa1.0 | hppa1.1 \
                | hppa2.0 | alpha | we32k | ns16k | clipper | i370 | sh \
                | powerpc | powerpcle | 1750a | dsp16xx | mips64 | mipsel \
                | pdp11 | mips64el | mips64orion | mips64orionel \
                | sparc | sparclet | sparclite | sparc64 | or32 | or16 | dlx)
                basic_machine=$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* )
        # 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

# Here we handle the case where we know the os, and the CPU type, but not the
# manufacturer.  We pick the logical manufacturer.
vendor=unknown
case $basic_machine in
        *-unknown)
                case $os in
                        -riscix*)
                                vendor=acorn
                                ;;
                        -sunos*)
                                vendor=sun
                                ;;
                        -lynxos*)
                                vendor=lynx
                                ;;
                        -aix*)
                                vendor=ibm
                                ;;
                        -hpux*)
                                vendor=hp
                                ;;
                        -hiux*)
                                vendor=hitachi
                                ;;
                        -unos*)
                                vendor=crds
                                ;;
                        -dgux*)
                                vendor=dg
                                ;;
                        -luna*)
                                vendor=omron
                                ;;
                        -genix*)
                                vendor=ns
                                ;;
                        -mvs*)
                                vendor=ibm
                                ;;
                        -ptx*)
                                vendor=sequent
                                ;;
                        -vxsim* | -vxworks*)
                                vendor=wrs
                                ;;
                        -aux*)
                                vendor=apple
                                ;;
                esac
                basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
                ;;
esac

echo $basic_machine$os