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[SCM] gawk branch, gawk-5.1-stable, updated. gawk-4.1.0-4021-g95b08f7


From: Arnold Robbins
Subject: [SCM] gawk branch, gawk-5.1-stable, updated. gawk-4.1.0-4021-g95b08f7
Date: Thu, 9 Jul 2020 12:03:06 -0400 (EDT)

This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "gawk".

The branch, gawk-5.1-stable has been updated
       via  95b08f7b67d80ac2004b0f7ffad7f1a26a193f58 (commit)
      from  528867035383b29a901b6d6f13052abe8071b158 (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
http://git.sv.gnu.org/cgit/gawk.git/commit/?id=95b08f7b67d80ac2004b0f7ffad7f1a26a193f58

commit 95b08f7b67d80ac2004b0f7ffad7f1a26a193f58
Author: Arnold D. Robbins <arnold@skeeve.com>
Date:   Thu Jul 9 19:02:57 2020 +0300

    Update aux files.

diff --git a/ChangeLog b/ChangeLog
index 1ce225b..94511c8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,6 +10,10 @@
        * awkgram.y (lookup_builtin): Only return the MPFR builtin
        function if the pointer is not NULL.
 
+       Unrelated:
+
+       * config.guess, config.sub: Updated from GNULIB.
+
 2020-07-08         Arnold D. Robbins     <arnold@skeeve.com>
 
        * str_array.c (str_lookup): If a pure number, copy to a string. Fixes
diff --git a/config.guess b/config.guess
index 11fda52..92bfc33 100755
--- a/config.guess
+++ b/config.guess
@@ -1095,7 +1095,17 @@ EOF
        echo "$UNAME_MACHINE"-dec-linux-"$LIBC"
        exit ;;
     x86_64:Linux:*:*)
-       echo "$UNAME_MACHINE"-pc-linux-"$LIBC"
+       set_cc_for_build
+       LIBCABI=$LIBC
+       if [ "$CC_FOR_BUILD" != no_compiler_found ]; then
+           if (echo '#ifdef __ILP32__'; echo IS_X32; echo '#endif') | \
+               (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+               grep IS_X32 >/dev/null
+           then
+               LIBCABI="$LIBC"x32
+           fi
+       fi
+       echo "$UNAME_MACHINE"-pc-linux-"$LIBCABI"
        exit ;;
     xtensa*:Linux:*:*)
        echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
diff --git a/config.sub b/config.sub
index 973a298..ce89d5c 100755
--- a/config.sub
+++ b/config.sub
@@ -2,7 +2,7 @@
 # Configuration validation subroutine script.
 #   Copyright 1992-2020 Free Software Foundation, Inc.
 
-timestamp='2020-05-04'
+timestamp='2020-06-28'
 
 # 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
@@ -124,28 +124,27 @@ case $1 in
                ;;
        *-*-*-*)
                basic_machine=$field1-$field2
-               os=$field3-$field4
+               basic_os=$field3-$field4
                ;;
        *-*-*)
                # Ambiguous whether COMPANY is present, or skipped and 
KERNEL-OS is two
                # parts
                maybe_os=$field2-$field3
                case $maybe_os in
-                       nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc 
\
-                       | linux-newlib* | linux-musl* | linux-uclibc* | 
uclinux-uclibc* \
+                       nto-qnx* | linux-* | uclinux-uclibc* \
                        | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | 
netbsd*-gnu* \
                        | netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \
                        | storm-chaos* | os2-emx* | rtmk-nova*)
                                basic_machine=$field1
-                               os=$maybe_os
+                               basic_os=$maybe_os
                                ;;
                        android-linux)
                                basic_machine=$field1-unknown
-                               os=linux-android
+                               basic_os=linux-android
                                ;;
                        *)
                                basic_machine=$field1-$field2
-                               os=$field3
+                               basic_os=$field3
                                ;;
                esac
                ;;
@@ -154,7 +153,7 @@ case $1 in
                case $field1-$field2 in
                        decstation-3100)
                                basic_machine=mips-dec
-                               os=
+                               basic_os=
                                ;;
                        *-*)
                                # Second component is usually, but not always 
the OS
@@ -162,7 +161,7 @@ case $1 in
                                        # Prevent following clause from 
handling this valid os
                                        sun*os*)
                                                basic_machine=$field1
-                                               os=$field2
+                                               basic_os=$field2
                                                ;;
                                        # Manufacturers
                                        dec* | mips* | sequent* | encore* | 
pc533* | sgi* | sony* \
@@ -175,11 +174,11 @@ case $1 in
                                        | microblaze* | sim | cisco \
                                        | oki | wec | wrs | winbond)
                                                basic_machine=$field1-$field2
-                                               os=
+                                               basic_os=
                                                ;;
                                        *)
                                                basic_machine=$field1
-                                               os=$field2
+                                               basic_os=$field2
                                                ;;
                                esac
                        ;;
@@ -191,447 +190,451 @@ case $1 in
                case $field1 in
                        386bsd)
                                basic_machine=i386-pc
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        a29khif)
                                basic_machine=a29k-amd
-                               os=udi
+                               basic_os=udi
                                ;;
                        adobe68k)
                                basic_machine=m68010-adobe
-                               os=scout
+                               basic_os=scout
                                ;;
                        alliant)
                                basic_machine=fx80-alliant
-                               os=
+                               basic_os=
                                ;;
                        altos | altos3068)
                                basic_machine=m68k-altos
-                               os=
+                               basic_os=
                                ;;
                        am29k)
                                basic_machine=a29k-none
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        amdahl)
                                basic_machine=580-amdahl
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        amiga)
                                basic_machine=m68k-unknown
-                               os=
+                               basic_os=
                                ;;
                        amigaos | amigados)
                                basic_machine=m68k-unknown
-                               os=amigaos
+                               basic_os=amigaos
                                ;;
                        amigaunix | amix)
                                basic_machine=m68k-unknown
-                               os=sysv4
+                               basic_os=sysv4
                                ;;
                        apollo68)
                                basic_machine=m68k-apollo
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        apollo68bsd)
                                basic_machine=m68k-apollo
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        aros)
                                basic_machine=i386-pc
-                               os=aros
+                               basic_os=aros
                                ;;
                        aux)
                                basic_machine=m68k-apple
-                               os=aux
+                               basic_os=aux
                                ;;
                        balance)
                                basic_machine=ns32k-sequent
-                               os=dynix
+                               basic_os=dynix
                                ;;
                        blackfin)
                                basic_machine=bfin-unknown
-                               os=linux
+                               basic_os=linux
                                ;;
                        cegcc)
                                basic_machine=arm-unknown
-                               os=cegcc
+                               basic_os=cegcc
                                ;;
                        convex-c1)
                                basic_machine=c1-convex
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        convex-c2)
                                basic_machine=c2-convex
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        convex-c32)
                                basic_machine=c32-convex
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        convex-c34)
                                basic_machine=c34-convex
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        convex-c38)
                                basic_machine=c38-convex
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        cray)
                                basic_machine=j90-cray
-                               os=unicos
+                               basic_os=unicos
                                ;;
                        crds | unos)
                                basic_machine=m68k-crds
-                               os=
+                               basic_os=
                                ;;
                        da30)
                                basic_machine=m68k-da30
-                               os=
+                               basic_os=
                                ;;
                        decstation | pmax | pmin | dec3100 | decstatn)
                                basic_machine=mips-dec
-                               os=
+                               basic_os=
                                ;;
                        delta88)
                                basic_machine=m88k-motorola
-                               os=sysv3
+                               basic_os=sysv3
                                ;;
                        dicos)
                                basic_machine=i686-pc
-                               os=dicos
+                               basic_os=dicos
                                ;;
                        djgpp)
                                basic_machine=i586-pc
-                               os=msdosdjgpp
+                               basic_os=msdosdjgpp
                                ;;
                        ebmon29k)
                                basic_machine=a29k-amd
-                               os=ebmon
+                               basic_os=ebmon
                                ;;
                        es1800 | OSE68k | ose68k | ose | OSE)
                                basic_machine=m68k-ericsson
-                               os=ose
+                               basic_os=ose
                                ;;
                        gmicro)
                                basic_machine=tron-gmicro
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        go32)
                                basic_machine=i386-pc
-                               os=go32
+                               basic_os=go32
                                ;;
                        h8300hms)
                                basic_machine=h8300-hitachi
-                               os=hms
+                               basic_os=hms
                                ;;
                        h8300xray)
                                basic_machine=h8300-hitachi
-                               os=xray
+                               basic_os=xray
                                ;;
                        h8500hms)
                                basic_machine=h8500-hitachi
-                               os=hms
+                               basic_os=hms
                                ;;
                        harris)
                                basic_machine=m88k-harris
-                               os=sysv3
+                               basic_os=sysv3
                                ;;
                        hp300 | hp300hpux)
                                basic_machine=m68k-hp
-                               os=hpux
+                               basic_os=hpux
                                ;;
                        hp300bsd)
                                basic_machine=m68k-hp
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        hppaosf)
                                basic_machine=hppa1.1-hp
-                               os=osf
+                               basic_os=osf
                                ;;
                        hppro)
                                basic_machine=hppa1.1-hp
-                               os=proelf
+                               basic_os=proelf
                                ;;
                        i386mach)
                                basic_machine=i386-mach
-                               os=mach
+                               basic_os=mach
                                ;;
                        isi68 | isi)
                                basic_machine=m68k-isi
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        m68knommu)
                                basic_machine=m68k-unknown
-                               os=linux
+                               basic_os=linux
                                ;;
                        magnum | m3230)
                                basic_machine=mips-mips
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        merlin)
                                basic_machine=ns32k-utek
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        mingw64)
                                basic_machine=x86_64-pc
-                               os=mingw64
+                               basic_os=mingw64
                                ;;
                        mingw32)
                                basic_machine=i686-pc
-                               os=mingw32
+                               basic_os=mingw32
                                ;;
                        mingw32ce)
                                basic_machine=arm-unknown
-                               os=mingw32ce
+                               basic_os=mingw32ce
                                ;;
                        monitor)
                                basic_machine=m68k-rom68k
-                               os=coff
+                               basic_os=coff
                                ;;
                        morphos)
                                basic_machine=powerpc-unknown
-                               os=morphos
+                               basic_os=morphos
                                ;;
                        moxiebox)
                                basic_machine=moxie-unknown
-                               os=moxiebox
+                               basic_os=moxiebox
                                ;;
                        msdos)
                                basic_machine=i386-pc
-                               os=msdos
+                               basic_os=msdos
                                ;;
                        msys)
                                basic_machine=i686-pc
-                               os=msys
+                               basic_os=msys
                                ;;
                        mvs)
                                basic_machine=i370-ibm
-                               os=mvs
+                               basic_os=mvs
                                ;;
                        nacl)
                                basic_machine=le32-unknown
-                               os=nacl
+                               basic_os=nacl
                                ;;
                        ncr3000)
                                basic_machine=i486-ncr
-                               os=sysv4
+                               basic_os=sysv4
                                ;;
                        netbsd386)
                                basic_machine=i386-pc
-                               os=netbsd
+                               basic_os=netbsd
                                ;;
                        netwinder)
                                basic_machine=armv4l-rebel
-                               os=linux
+                               basic_os=linux
                                ;;
                        news | news700 | news800 | news900)
                                basic_machine=m68k-sony
-                               os=newsos
+                               basic_os=newsos
                                ;;
                        news1000)
                                basic_machine=m68030-sony
-                               os=newsos
+                               basic_os=newsos
                                ;;
                        necv70)
                                basic_machine=v70-nec
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        nh3000)
                                basic_machine=m68k-harris
-                               os=cxux
+                               basic_os=cxux
                                ;;
                        nh[45]000)
                                basic_machine=m88k-harris
-                               os=cxux
+                               basic_os=cxux
                                ;;
                        nindy960)
                                basic_machine=i960-intel
-                               os=nindy
+                               basic_os=nindy
                                ;;
                        mon960)
                                basic_machine=i960-intel
-                               os=mon960
+                               basic_os=mon960
                                ;;
                        nonstopux)
                                basic_machine=mips-compaq
-                               os=nonstopux
+                               basic_os=nonstopux
                                ;;
                        os400)
                                basic_machine=powerpc-ibm
-                               os=os400
+                               basic_os=os400
                                ;;
                        OSE68000 | ose68000)
                                basic_machine=m68000-ericsson
-                               os=ose
+                               basic_os=ose
                                ;;
                        os68k)
                                basic_machine=m68k-none
-                               os=os68k
+                               basic_os=os68k
                                ;;
                        paragon)
                                basic_machine=i860-intel
-                               os=osf
+                               basic_os=osf
                                ;;
                        parisc)
                                basic_machine=hppa-unknown
-                               os=linux
+                               basic_os=linux
+                               ;;
+                       psp)
+                               basic_machine=mipsallegrexel-sony
+                               basic_os=psp
                                ;;
                        pw32)
                                basic_machine=i586-unknown
-                               os=pw32
+                               basic_os=pw32
                                ;;
                        rdos | rdos64)
                                basic_machine=x86_64-pc
-                               os=rdos
+                               basic_os=rdos
                                ;;
                        rdos32)
                                basic_machine=i386-pc
-                               os=rdos
+                               basic_os=rdos
                                ;;
                        rom68k)
                                basic_machine=m68k-rom68k
-                               os=coff
+                               basic_os=coff
                                ;;
                        sa29200)
                                basic_machine=a29k-amd
-                               os=udi
+                               basic_os=udi
                                ;;
                        sei)
                                basic_machine=mips-sei
-                               os=seiux
+                               basic_os=seiux
                                ;;
                        sequent)
                                basic_machine=i386-sequent
-                               os=
+                               basic_os=
                                ;;
                        sps7)
                                basic_machine=m68k-bull
-                               os=sysv2
+                               basic_os=sysv2
                                ;;
                        st2000)
                                basic_machine=m68k-tandem
-                               os=
+                               basic_os=
                                ;;
                        stratus)
                                basic_machine=i860-stratus
-                               os=sysv4
+                               basic_os=sysv4
                                ;;
                        sun2)
                                basic_machine=m68000-sun
-                               os=
+                               basic_os=
                                ;;
                        sun2os3)
                                basic_machine=m68000-sun
-                               os=sunos3
+                               basic_os=sunos3
                                ;;
                        sun2os4)
                                basic_machine=m68000-sun
-                               os=sunos4
+                               basic_os=sunos4
                                ;;
                        sun3)
                                basic_machine=m68k-sun
-                               os=
+                               basic_os=
                                ;;
                        sun3os3)
                                basic_machine=m68k-sun
-                               os=sunos3
+                               basic_os=sunos3
                                ;;
                        sun3os4)
                                basic_machine=m68k-sun
-                               os=sunos4
+                               basic_os=sunos4
                                ;;
                        sun4)
                                basic_machine=sparc-sun
-                               os=
+                               basic_os=
                                ;;
                        sun4os3)
                                basic_machine=sparc-sun
-                               os=sunos3
+                               basic_os=sunos3
                                ;;
                        sun4os4)
                                basic_machine=sparc-sun
-                               os=sunos4
+                               basic_os=sunos4
                                ;;
                        sun4sol2)
                                basic_machine=sparc-sun
-                               os=solaris2
+                               basic_os=solaris2
                                ;;
                        sun386 | sun386i | roadrunner)
                                basic_machine=i386-sun
-                               os=
+                               basic_os=
                                ;;
                        sv1)
                                basic_machine=sv1-cray
-                               os=unicos
+                               basic_os=unicos
                                ;;
                        symmetry)
                                basic_machine=i386-sequent
-                               os=dynix
+                               basic_os=dynix
                                ;;
                        t3e)
                                basic_machine=alphaev5-cray
-                               os=unicos
+                               basic_os=unicos
                                ;;
                        t90)
                                basic_machine=t90-cray
-                               os=unicos
+                               basic_os=unicos
                                ;;
                        toad1)
                                basic_machine=pdp10-xkl
-                               os=tops20
+                               basic_os=tops20
                                ;;
                        tpf)
                                basic_machine=s390x-ibm
-                               os=tpf
+                               basic_os=tpf
                                ;;
                        udi29k)
                                basic_machine=a29k-amd
-                               os=udi
+                               basic_os=udi
                                ;;
                        ultra3)
                                basic_machine=a29k-nyu
-                               os=sym1
+                               basic_os=sym1
                                ;;
                        v810 | necv810)
                                basic_machine=v810-nec
-                               os=none
+                               basic_os=none
                                ;;
                        vaxv)
                                basic_machine=vax-dec
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        vms)
                                basic_machine=vax-dec
-                               os=vms
+                               basic_os=vms
                                ;;
                        vsta)
                                basic_machine=i386-pc
-                               os=vsta
+                               basic_os=vsta
                                ;;
                        vxworks960)
                                basic_machine=i960-wrs
-                               os=vxworks
+                               basic_os=vxworks
                                ;;
                        vxworks68)
                                basic_machine=m68k-wrs
-                               os=vxworks
+                               basic_os=vxworks
                                ;;
                        vxworks29k)
                                basic_machine=a29k-wrs
-                               os=vxworks
+                               basic_os=vxworks
                                ;;
                        xbox)
                                basic_machine=i686-pc
-                               os=mingw32
+                               basic_os=mingw32
                                ;;
                        ymp)
                                basic_machine=ymp-cray
-                               os=unicos
+                               basic_os=unicos
                                ;;
                        *)
                                basic_machine=$1
-                               os=
+                               basic_os=
                                ;;
                esac
                ;;
@@ -683,17 +686,17 @@ case $basic_machine in
        bluegene*)
                cpu=powerpc
                vendor=ibm
-               os=cnk
+               basic_os=cnk
                ;;
        decsystem10* | dec10*)
                cpu=pdp10
                vendor=dec
-               os=tops10
+               basic_os=tops10
                ;;
        decsystem20* | dec20*)
                cpu=pdp10
                vendor=dec
-               os=tops20
+               basic_os=tops20
                ;;
        delta | 3300 | motorola-3300 | motorola-delta \
              | 3300-motorola | delta-motorola)
@@ -703,7 +706,7 @@ case $basic_machine in
        dpx2*)
                cpu=m68k
                vendor=bull
-               os=sysv3
+               basic_os=sysv3
                ;;
        encore | umax | mmax)
                cpu=ns32k
@@ -712,7 +715,7 @@ case $basic_machine in
        elxsi)
                cpu=elxsi
                vendor=elxsi
-               os=${os:-bsd}
+               basic_os=${basic_os:-bsd}
                ;;
        fx2800)
                cpu=i860
@@ -725,7 +728,7 @@ case $basic_machine in
        h3050r* | hiux*)
                cpu=hppa1.1
                vendor=hitachi
-               os=hiuxwe2
+               basic_os=hiuxwe2
                ;;
        hp3k9[0-9][0-9] | hp9[0-9][0-9])
                cpu=hppa1.0
@@ -768,36 +771,36 @@ case $basic_machine in
        i*86v32)
                cpu=`echo "$1" | sed -e 's/86.*/86/'`
                vendor=pc
-               os=sysv32
+               basic_os=sysv32
                ;;
        i*86v4*)
                cpu=`echo "$1" | sed -e 's/86.*/86/'`
                vendor=pc
-               os=sysv4
+               basic_os=sysv4
                ;;
        i*86v)
                cpu=`echo "$1" | sed -e 's/86.*/86/'`
                vendor=pc
-               os=sysv
+               basic_os=sysv
                ;;
        i*86sol2)
                cpu=`echo "$1" | sed -e 's/86.*/86/'`
                vendor=pc
-               os=solaris2
+               basic_os=solaris2
                ;;
        j90 | j90-cray)
                cpu=j90
                vendor=cray
-               os=${os:-unicos}
+               basic_os=${basic_os:-unicos}
                ;;
        iris | iris4d)
                cpu=mips
                vendor=sgi
-               case $os in
+               case $basic_os in
                    irix*)
                        ;;
                    *)
-                       os=irix4
+                       basic_os=irix4
                        ;;
                esac
                ;;
@@ -808,26 +811,26 @@ case $basic_machine in
        *mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
                cpu=m68k
                vendor=atari
-               os=mint
+               basic_os=mint
                ;;
        news-3600 | risc-news)
                cpu=mips
                vendor=sony
-               os=newsos
+               basic_os=newsos
                ;;
        next | m*-next)
                cpu=m68k
                vendor=next
-               case $os in
+               case $basic_os in
                    openstep*)
                        ;;
                    nextstep*)
                        ;;
                    ns2*)
-                     os=nextstep2
+                     basic_os=nextstep2
                        ;;
                    *)
-                     os=nextstep3
+                     basic_os=nextstep3
                        ;;
                esac
                ;;
@@ -838,12 +841,12 @@ case $basic_machine in
        op50n-* | op60c-*)
                cpu=hppa1.1
                vendor=oki
-               os=proelf
+               basic_os=proelf
                ;;
        pa-hitachi)
                cpu=hppa1.1
                vendor=hitachi
-               os=hiuxwe2
+               basic_os=hiuxwe2
                ;;
        pbd)
                cpu=sparc
@@ -880,12 +883,12 @@ case $basic_machine in
        sde)
                cpu=mipsisa32
                vendor=sde
-               os=${os:-elf}
+               basic_os=${basic_os:-elf}
                ;;
        simso-wrs)
                cpu=sparclite
                vendor=wrs
-               os=vxworks
+               basic_os=vxworks
                ;;
        tower | tower-32)
                cpu=m68k
@@ -902,7 +905,7 @@ case $basic_machine in
        w89k-*)
                cpu=hppa1.1
                vendor=winbond
-               os=proelf
+               basic_os=proelf
                ;;
        none)
                cpu=none
@@ -955,11 +958,11 @@ case $cpu-$vendor in
        # some cases the only manufacturer, in others, it is the most popular.
        craynv-unknown)
                vendor=cray
-               os=${os:-unicosmp}
+               basic_os=${basic_os:-unicosmp}
                ;;
        c90-unknown | c90-cray)
                vendor=cray
-               os=${os:-unicos}
+               basic_os=${Basic_os:-unicos}
                ;;
        fx80-unknown)
                vendor=alliant
@@ -1003,7 +1006,7 @@ case $cpu-$vendor in
        dpx20-unknown | dpx20-bull)
                cpu=rs6000
                vendor=bull
-               os=${os:-bosx}
+               basic_os=${basic_os:-bosx}
                ;;
 
        # Here we normalize CPU types irrespective of the vendor
@@ -1012,7 +1015,7 @@ case $cpu-$vendor in
                ;;
        blackfin-*)
                cpu=bfin
-               os=linux
+               basic_os=linux
                ;;
        c54x-*)
                cpu=tic54x
@@ -1025,7 +1028,7 @@ case $cpu-$vendor in
                ;;
        e500v[12]-*)
                cpu=powerpc
-               os=$os"spe"
+               basic_os=${basic_os}"spe"
                ;;
        mips3*-*)
                cpu=mips64
@@ -1035,7 +1038,7 @@ case $cpu-$vendor in
                ;;
        m68knommu-*)
                cpu=m68k
-               os=linux
+               basic_os=linux
                ;;
        m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
                cpu=s12z
@@ -1045,7 +1048,7 @@ case $cpu-$vendor in
                ;;
        parisc-*)
                cpu=hppa
-               os=linux
+               basic_os=linux
                ;;
        pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
                cpu=i586
@@ -1105,7 +1108,7 @@ case $cpu-$vendor in
        # Recognize the canonical CPU Types that limit and/or modify the
        # company names they are paired with.
        cr16-*)
-               os=${os:-elf}
+               basic_os=${basic_os:-elf}
                ;;
        crisv32-* | etraxfs*-*)
                cpu=crisv32
@@ -1116,7 +1119,7 @@ case $cpu-$vendor in
                vendor=axis
                ;;
        crx-*)
-               os=${os:-elf}
+               basic_os=${basic_os:-elf}
                ;;
        neo-tandem)
                cpu=neo
@@ -1138,16 +1141,12 @@ case $cpu-$vendor in
                cpu=nsx
                vendor=tandem
                ;;
-       s390-*)
-               cpu=s390
-               vendor=ibm
-               ;;
-       s390x-*)
-               cpu=s390x
-               vendor=ibm
+       mipsallegrexel-sony)
+               cpu=mipsallegrexel
+               vendor=sony
                ;;
        tile*-*)
-               os=${os:-linux-gnu}
+               basic_os=${basic_os:-linux-gnu}
                ;;
 
        *)
@@ -1229,6 +1228,7 @@ case $cpu-$vendor in
                        | pyramid \
                        | riscv | riscv32 | riscv64 \
                        | rl78 | romp | rs6000 | rx \
+                       | s390 | s390x \
                        | score \
                        | sh | shl \
                        | sh[1234] | sh[24]a | sh[24]ae[lb] | sh[23]e | she[lb] 
| sh[lb]e \
@@ -1275,8 +1275,43 @@ esac
 
 # Decode manufacturer-specific aliases for certain operating systems.
 
-if [ x$os != x ]
+if [ x$basic_os != x ]
 then
+
+# First recognize some ad-hoc caes, or perhaps split kernel-os, or else just
+# set os.
+case $basic_os in
+       gnu/linux*)
+               kernel=linux
+               os=`echo $basic_os | sed -e 's|gnu/linux|gnu|'`
+               ;;
+       nto-qnx*)
+               kernel=nto
+               os=`echo $basic_os | sed -e 's|nto-qnx|qnx|'`
+               ;;
+       *-*)
+               # shellcheck disable=SC2162
+               IFS="-" read kernel os <<EOF
+$basic_os
+EOF
+               ;;
+       # Default OS when just kernel was specified
+       nto*)
+               kernel=nto
+               os=`echo $basic_os | sed -e 's|nto|qnx|'`
+               ;;
+       linux*)
+               kernel=linux
+               os=`echo $basic_os | sed -e 's|linux|gnu|'`
+               ;;
+       *)
+               kernel=
+               os=$basic_os
+               ;;
+esac
+
+# Now, normalize the OS (knowing we just have one component, it's not a kernel,
+# etc.)
 case $os in
        # First match some system type aliases that might get confused
        # with valid system types.
@@ -1296,9 +1331,6 @@ case $os in
        unixware*)
                os=sysv4.2uw
                ;;
-       gnu/linux*)
-               os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
-               ;;
        # es1800 is here to avoid being matched by es* (a different OS)
        es1800*)
                os=ose
@@ -1322,10 +1354,7 @@ case $os in
        sco3.2.[4-9]*)
                os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
                ;;
-       sco3.2v[4-9]* | sco5v6*)
-               # Don't forget version if it is 3.2v4 or newer.
-               ;;
-       scout)
+       sco*v* | scout)
                # Don't match below
                ;;
        sco*)
@@ -1334,41 +1363,6 @@ case $os in
        psos*)
                os=psos
                ;;
-       # Now 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* | esix* | aix* | cnk* | sunos | sunos[34]*\
-            | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
-            | sym* | kopensolaris* | plan9* \
-            | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \
-            | aos* | aros* | cloudabi* | sortix* | twizzler* \
-            | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
-            | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
-            | knetbsd* | mirbsd* | netbsd* \
-            | bitrig* | openbsd* | solidbsd* | libertybsd* | os108* \
-            | ekkobsd* | kfreebsd* | freebsd* | riscix* | lynxos* \
-            | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \
-            | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \
-            | udi* | eabi* | lites* | ieee* | go32* | aux* | hcos* \
-            | chorusrdb* | cegcc* | glidix* \
-            | cygwin* | msys* | pe* | moss* | proelf* | rtems* \
-            | midipix* | mingw32* | mingw64* | linux-gnu* | linux-android* \
-            | linux-newlib* | linux-musl* | linux-uclibc* \
-            | uxpv* | beos* | mpeix* | udk* | moxiebox* \
-            | interix* | uwin* | mks* | rhapsody* | darwin* \
-            | openstep* | oskit* | conix* | pw32* | nonstopux* \
-            | storm-chaos* | tops10* | tenex* | tops20* | its* \
-            | os2* | vos* | palmos* | uclinux* | nucleus* \
-            | morphos* | superux* | rtmk* | windiss* \
-            | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \
-            | skyos* | haiku* | rdos* | toppers* | drops* | es* \
-            | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
-            | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
-            | nsk* | powerunix* | genode*)
-       # Remember, each alternative MUST END IN *, to match a version number.
-               ;;
        qnx*)
                case $cpu in
                    x86 | i*86)
@@ -1381,31 +1375,19 @@ case $os in
        hiux*)
                os=hiuxwe2
                ;;
-       nto-qnx*)
-               ;;
-       nto*)
-               os=`echo $os | sed -e 's|nto|nto-qnx|'`
-               ;;
-       sim | xray | os68k* | v88r* \
-           | windows* | osx | abug | netware* | os9* \
-           | macos* | mpw* | magic* | mmixware* | mon960* | lnews*)
-               ;;
-       linux-dietlibc)
-               os=linux-dietlibc
-               ;;
-       linux*)
-               os=`echo $os | sed -e 's|linux|linux-gnu|'`
-               ;;
        lynx*178)
                os=lynxos178
                ;;
        lynx*5)
                os=lynxos5
                ;;
+       lynxos*)
+               # don't get caught up in next wildcard
+               ;;
        lynx*)
                os=lynxos
                ;;
-       mac*)
+       mac[0-9]*)
                os=`echo "$os" | sed -e 's|mac|macos|'`
                ;;
        opened*)
@@ -1475,18 +1457,12 @@ case $os in
        sysvr4)
                os=sysv4
                ;;
-       # This must come after sysvr4.
-       sysv*)
-               ;;
        ose*)
                os=ose
                ;;
        *mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
                os=mint
                ;;
-       zvmoe)
-               os=zvmoe
-               ;;
        dicos*)
                os=dicos
                ;;
@@ -1503,19 +1479,11 @@ case $os in
                        ;;
                esac
                ;;
-       nacl*)
-               ;;
-       ios)
-               ;;
-       none)
-               ;;
-       *-eabi)
-               ;;
        *)
-               echo Invalid configuration \`"$1"\': system \`"$os"\' not 
recognized 1>&2
-               exit 1
+               # No normalization, but not necessarily accepted, that comes 
below.
                ;;
 esac
+
 else
 
 # Here we handle the default operating systems that come with various machines.
@@ -1528,6 +1496,7 @@ else
 # will signal an error saying that MANUFACTURER isn't an operating
 # system, and we'll never get to this point.
 
+kernel=
 case $cpu-$vendor in
        score-*)
                os=elf
@@ -1539,7 +1508,8 @@ case $cpu-$vendor in
                os=riscix1.2
                ;;
        arm*-rebel)
-               os=linux
+               kernel=linux
+               os=gnu
                ;;
        arm*-semi)
                os=aout
@@ -1705,84 +1675,169 @@ case $cpu-$vendor in
                os=none
                ;;
 esac
+
 fi
 
+# Now, validate our (potentially fixed-up) OS.
+case $os in
+       # Sometimes we do "kernel-abi", so those need to count as OSes.
+       musl* | newlib* | uclibc*)
+               ;;
+       # Likewise for "kernel-libc"
+       eabi | eabihf | gnueabi | gnueabihf)
+               ;;
+       # Now accept the basic system types.
+       # The portable systems comes first.
+       # Each alternative MUST end in a * to match a version number.
+       gnu* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
+            | *vms* | esix* | aix* | cnk* | sunos | sunos[34]* \
+            | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
+            | sym* |  plan9* | psp* | sim* | xray* | os68k* | v88r* \
+            | hiux* | abug | nacl* | netware* | windows* \
+            | os9* | macos* | osx* | ios* \
+            | mpw* | magic* | mmixware* | mon960* | lnews* \
+            | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \
+            | aos* | aros* | cloudabi* | sortix* | twizzler* \
+            | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
+            | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
+            | mirbsd* | netbsd* | dicos* | openedition* | ose* \
+            | bitrig* | openbsd* | solidbsd* | libertybsd* | os108* \
+            | ekkobsd* | freebsd* | riscix* | lynxos* | os400* \
+            | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \
+            | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \
+            | udi* | lites* | ieee* | go32* | aux* | hcos* \
+            | chorusrdb* | cegcc* | glidix* \
+            | cygwin* | msys* | pe* | moss* | proelf* | rtems* \
+            | midipix* | mingw32* | mingw64* | mint* \
+            | uxpv* | beos* | mpeix* | udk* | moxiebox* \
+            | interix* | uwin* | mks* | rhapsody* | darwin* \
+            | openstep* | oskit* | conix* | pw32* | nonstopux* \
+            | storm-chaos* | tops10* | tenex* | tops20* | its* \
+            | os2* | vos* | palmos* | uclinux* | nucleus* | morphos* \
+            | scout* | superux* | sysv* | rtmk* | tpf* | windiss* \
+            | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \
+            | skyos* | haiku* | rdos* | toppers* | drops* | es* \
+            | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
+            | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
+            | nsk* | powerunix* | genode* | zvmoe* )
+               ;;
+       # This one is extra strict with allowed versions
+       sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
+               # Don't forget version if it is 3.2v4 or newer.
+               ;;
+       none)
+               ;;
+       *)
+               echo Invalid configuration \`"$1"\': OS \`"$os"\' not 
recognized 1>&2
+               exit 1
+               ;;
+esac
+
+# As a final step for OS-related things, validate the OS-kernel combination
+# (given a valid OS), if there is a kernel.
+case $kernel-$os in
+       linux-gnu* | linux-dietlibc* | linux-android* | linux-newlib* | 
linux-musl* | linux-uclibc* )
+               ;;
+       -dietlibc* | -newlib* | -musl* | -uclibc* )
+               # These are just libc implementations, not actual OSes, and thus
+               # require a kernel.
+               echo "Invalid configuration \`$1': libc \`$os' needs explicit 
kernel." 1>&2
+               exit 1
+               ;;
+       kfreebsd*-gnu* | kopensolaris*-gnu*)
+               ;;
+       nto-qnx*)
+               ;;
+       *-eabi* | *-gnueabi*)
+               ;;
+       -*)
+               # Blank kernel with real OS is always fine.
+               ;;
+       *-*)
+               echo "Invalid configuration \`$1': Kernel \`$kernel' not known 
to work with OS \`$os'." 1>&2
+               exit 1
+               ;;
+esac
+
 # Here we handle the case where we know the os, and the CPU type, but not the
 # manufacturer.  We pick the logical manufacturer.
 case $vendor in
        unknown)
-               case $os in
-                       riscix*)
+               case $cpu-$os in
+                       *-riscix*)
                                vendor=acorn
                                ;;
-                       sunos*)
+                       *-sunos*)
                                vendor=sun
                                ;;
-                       cnk*|-aix*)
+                       *-cnk* | *-aix*)
                                vendor=ibm
                                ;;
-                       beos*)
+                       *-beos*)
                                vendor=be
                                ;;
-                       hpux*)
+                       *-hpux*)
                                vendor=hp
                                ;;
-                       mpeix*)
+                       *-mpeix*)
                                vendor=hp
                                ;;
-                       hiux*)
+                       *-hiux*)
                                vendor=hitachi
                                ;;
-                       unos*)
+                       *-unos*)
                                vendor=crds
                                ;;
-                       dgux*)
+                       *-dgux*)
                                vendor=dg
                                ;;
-                       luna*)
+                       *-luna*)
                                vendor=omron
                                ;;
-                       genix*)
+                       *-genix*)
                                vendor=ns
                                ;;
-                       clix*)
+                       *-clix*)
                                vendor=intergraph
                                ;;
-                       mvs* | opened*)
+                       *-mvs* | *-opened*)
+                               vendor=ibm
+                               ;;
+                       *-os400*)
                                vendor=ibm
                                ;;
-                       os400*)
+                       s390-* | s390x-*)
                                vendor=ibm
                                ;;
-                       ptx*)
+                       *-ptx*)
                                vendor=sequent
                                ;;
-                       tpf*)
+                       *-tpf*)
                                vendor=ibm
                                ;;
-                       vxsim* | vxworks* | windiss*)
+                       *-vxsim* | *-vxworks* | *-windiss*)
                                vendor=wrs
                                ;;
-                       aux*)
+                       *-aux*)
                                vendor=apple
                                ;;
-                       hms*)
+                       *-hms*)
                                vendor=hitachi
                                ;;
-                       mpw* | macos*)
+                       *-mpw* | *-macos*)
                                vendor=apple
                                ;;
-                       *mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
+                       *-*mint | *-mint[0-9]* | *-*MiNT | *-MiNT[0-9]*)
                                vendor=atari
                                ;;
-                       vos*)
+                       *-vos*)
                                vendor=stratus
                                ;;
                esac
                ;;
 esac
 
-echo "$cpu-$vendor-$os"
+echo "$cpu-$vendor-${kernel:+$kernel-}$os"
 exit
 
 # Local variables:
diff --git a/extension/build-aux/ChangeLog b/extension/build-aux/ChangeLog
index 611b79c..109023b 100644
--- a/extension/build-aux/ChangeLog
+++ b/extension/build-aux/ChangeLog
@@ -1,3 +1,7 @@
+2020-07-09         Arnold D. Robbins     <arnold@skeeve.com>
+
+       * config.guess, config.sub: Updated from GNULIB.
+
 2020-05-15         Arnold D. Robbins     <arnold@skeeve.com>
 
        * config.guess, config.sub: Updated from GNULIB.
diff --git a/extension/build-aux/config.guess b/extension/build-aux/config.guess
index 11fda52..92bfc33 100755
--- a/extension/build-aux/config.guess
+++ b/extension/build-aux/config.guess
@@ -1095,7 +1095,17 @@ EOF
        echo "$UNAME_MACHINE"-dec-linux-"$LIBC"
        exit ;;
     x86_64:Linux:*:*)
-       echo "$UNAME_MACHINE"-pc-linux-"$LIBC"
+       set_cc_for_build
+       LIBCABI=$LIBC
+       if [ "$CC_FOR_BUILD" != no_compiler_found ]; then
+           if (echo '#ifdef __ILP32__'; echo IS_X32; echo '#endif') | \
+               (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+               grep IS_X32 >/dev/null
+           then
+               LIBCABI="$LIBC"x32
+           fi
+       fi
+       echo "$UNAME_MACHINE"-pc-linux-"$LIBCABI"
        exit ;;
     xtensa*:Linux:*:*)
        echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
diff --git a/extension/build-aux/config.sub b/extension/build-aux/config.sub
index 973a298..ce89d5c 100755
--- a/extension/build-aux/config.sub
+++ b/extension/build-aux/config.sub
@@ -2,7 +2,7 @@
 # Configuration validation subroutine script.
 #   Copyright 1992-2020 Free Software Foundation, Inc.
 
-timestamp='2020-05-04'
+timestamp='2020-06-28'
 
 # 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
@@ -124,28 +124,27 @@ case $1 in
                ;;
        *-*-*-*)
                basic_machine=$field1-$field2
-               os=$field3-$field4
+               basic_os=$field3-$field4
                ;;
        *-*-*)
                # Ambiguous whether COMPANY is present, or skipped and 
KERNEL-OS is two
                # parts
                maybe_os=$field2-$field3
                case $maybe_os in
-                       nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc 
\
-                       | linux-newlib* | linux-musl* | linux-uclibc* | 
uclinux-uclibc* \
+                       nto-qnx* | linux-* | uclinux-uclibc* \
                        | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | 
netbsd*-gnu* \
                        | netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \
                        | storm-chaos* | os2-emx* | rtmk-nova*)
                                basic_machine=$field1
-                               os=$maybe_os
+                               basic_os=$maybe_os
                                ;;
                        android-linux)
                                basic_machine=$field1-unknown
-                               os=linux-android
+                               basic_os=linux-android
                                ;;
                        *)
                                basic_machine=$field1-$field2
-                               os=$field3
+                               basic_os=$field3
                                ;;
                esac
                ;;
@@ -154,7 +153,7 @@ case $1 in
                case $field1-$field2 in
                        decstation-3100)
                                basic_machine=mips-dec
-                               os=
+                               basic_os=
                                ;;
                        *-*)
                                # Second component is usually, but not always 
the OS
@@ -162,7 +161,7 @@ case $1 in
                                        # Prevent following clause from 
handling this valid os
                                        sun*os*)
                                                basic_machine=$field1
-                                               os=$field2
+                                               basic_os=$field2
                                                ;;
                                        # Manufacturers
                                        dec* | mips* | sequent* | encore* | 
pc533* | sgi* | sony* \
@@ -175,11 +174,11 @@ case $1 in
                                        | microblaze* | sim | cisco \
                                        | oki | wec | wrs | winbond)
                                                basic_machine=$field1-$field2
-                                               os=
+                                               basic_os=
                                                ;;
                                        *)
                                                basic_machine=$field1
-                                               os=$field2
+                                               basic_os=$field2
                                                ;;
                                esac
                        ;;
@@ -191,447 +190,451 @@ case $1 in
                case $field1 in
                        386bsd)
                                basic_machine=i386-pc
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        a29khif)
                                basic_machine=a29k-amd
-                               os=udi
+                               basic_os=udi
                                ;;
                        adobe68k)
                                basic_machine=m68010-adobe
-                               os=scout
+                               basic_os=scout
                                ;;
                        alliant)
                                basic_machine=fx80-alliant
-                               os=
+                               basic_os=
                                ;;
                        altos | altos3068)
                                basic_machine=m68k-altos
-                               os=
+                               basic_os=
                                ;;
                        am29k)
                                basic_machine=a29k-none
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        amdahl)
                                basic_machine=580-amdahl
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        amiga)
                                basic_machine=m68k-unknown
-                               os=
+                               basic_os=
                                ;;
                        amigaos | amigados)
                                basic_machine=m68k-unknown
-                               os=amigaos
+                               basic_os=amigaos
                                ;;
                        amigaunix | amix)
                                basic_machine=m68k-unknown
-                               os=sysv4
+                               basic_os=sysv4
                                ;;
                        apollo68)
                                basic_machine=m68k-apollo
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        apollo68bsd)
                                basic_machine=m68k-apollo
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        aros)
                                basic_machine=i386-pc
-                               os=aros
+                               basic_os=aros
                                ;;
                        aux)
                                basic_machine=m68k-apple
-                               os=aux
+                               basic_os=aux
                                ;;
                        balance)
                                basic_machine=ns32k-sequent
-                               os=dynix
+                               basic_os=dynix
                                ;;
                        blackfin)
                                basic_machine=bfin-unknown
-                               os=linux
+                               basic_os=linux
                                ;;
                        cegcc)
                                basic_machine=arm-unknown
-                               os=cegcc
+                               basic_os=cegcc
                                ;;
                        convex-c1)
                                basic_machine=c1-convex
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        convex-c2)
                                basic_machine=c2-convex
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        convex-c32)
                                basic_machine=c32-convex
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        convex-c34)
                                basic_machine=c34-convex
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        convex-c38)
                                basic_machine=c38-convex
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        cray)
                                basic_machine=j90-cray
-                               os=unicos
+                               basic_os=unicos
                                ;;
                        crds | unos)
                                basic_machine=m68k-crds
-                               os=
+                               basic_os=
                                ;;
                        da30)
                                basic_machine=m68k-da30
-                               os=
+                               basic_os=
                                ;;
                        decstation | pmax | pmin | dec3100 | decstatn)
                                basic_machine=mips-dec
-                               os=
+                               basic_os=
                                ;;
                        delta88)
                                basic_machine=m88k-motorola
-                               os=sysv3
+                               basic_os=sysv3
                                ;;
                        dicos)
                                basic_machine=i686-pc
-                               os=dicos
+                               basic_os=dicos
                                ;;
                        djgpp)
                                basic_machine=i586-pc
-                               os=msdosdjgpp
+                               basic_os=msdosdjgpp
                                ;;
                        ebmon29k)
                                basic_machine=a29k-amd
-                               os=ebmon
+                               basic_os=ebmon
                                ;;
                        es1800 | OSE68k | ose68k | ose | OSE)
                                basic_machine=m68k-ericsson
-                               os=ose
+                               basic_os=ose
                                ;;
                        gmicro)
                                basic_machine=tron-gmicro
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        go32)
                                basic_machine=i386-pc
-                               os=go32
+                               basic_os=go32
                                ;;
                        h8300hms)
                                basic_machine=h8300-hitachi
-                               os=hms
+                               basic_os=hms
                                ;;
                        h8300xray)
                                basic_machine=h8300-hitachi
-                               os=xray
+                               basic_os=xray
                                ;;
                        h8500hms)
                                basic_machine=h8500-hitachi
-                               os=hms
+                               basic_os=hms
                                ;;
                        harris)
                                basic_machine=m88k-harris
-                               os=sysv3
+                               basic_os=sysv3
                                ;;
                        hp300 | hp300hpux)
                                basic_machine=m68k-hp
-                               os=hpux
+                               basic_os=hpux
                                ;;
                        hp300bsd)
                                basic_machine=m68k-hp
-                               os=bsd
+                               basic_os=bsd
                                ;;
                        hppaosf)
                                basic_machine=hppa1.1-hp
-                               os=osf
+                               basic_os=osf
                                ;;
                        hppro)
                                basic_machine=hppa1.1-hp
-                               os=proelf
+                               basic_os=proelf
                                ;;
                        i386mach)
                                basic_machine=i386-mach
-                               os=mach
+                               basic_os=mach
                                ;;
                        isi68 | isi)
                                basic_machine=m68k-isi
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        m68knommu)
                                basic_machine=m68k-unknown
-                               os=linux
+                               basic_os=linux
                                ;;
                        magnum | m3230)
                                basic_machine=mips-mips
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        merlin)
                                basic_machine=ns32k-utek
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        mingw64)
                                basic_machine=x86_64-pc
-                               os=mingw64
+                               basic_os=mingw64
                                ;;
                        mingw32)
                                basic_machine=i686-pc
-                               os=mingw32
+                               basic_os=mingw32
                                ;;
                        mingw32ce)
                                basic_machine=arm-unknown
-                               os=mingw32ce
+                               basic_os=mingw32ce
                                ;;
                        monitor)
                                basic_machine=m68k-rom68k
-                               os=coff
+                               basic_os=coff
                                ;;
                        morphos)
                                basic_machine=powerpc-unknown
-                               os=morphos
+                               basic_os=morphos
                                ;;
                        moxiebox)
                                basic_machine=moxie-unknown
-                               os=moxiebox
+                               basic_os=moxiebox
                                ;;
                        msdos)
                                basic_machine=i386-pc
-                               os=msdos
+                               basic_os=msdos
                                ;;
                        msys)
                                basic_machine=i686-pc
-                               os=msys
+                               basic_os=msys
                                ;;
                        mvs)
                                basic_machine=i370-ibm
-                               os=mvs
+                               basic_os=mvs
                                ;;
                        nacl)
                                basic_machine=le32-unknown
-                               os=nacl
+                               basic_os=nacl
                                ;;
                        ncr3000)
                                basic_machine=i486-ncr
-                               os=sysv4
+                               basic_os=sysv4
                                ;;
                        netbsd386)
                                basic_machine=i386-pc
-                               os=netbsd
+                               basic_os=netbsd
                                ;;
                        netwinder)
                                basic_machine=armv4l-rebel
-                               os=linux
+                               basic_os=linux
                                ;;
                        news | news700 | news800 | news900)
                                basic_machine=m68k-sony
-                               os=newsos
+                               basic_os=newsos
                                ;;
                        news1000)
                                basic_machine=m68030-sony
-                               os=newsos
+                               basic_os=newsos
                                ;;
                        necv70)
                                basic_machine=v70-nec
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        nh3000)
                                basic_machine=m68k-harris
-                               os=cxux
+                               basic_os=cxux
                                ;;
                        nh[45]000)
                                basic_machine=m88k-harris
-                               os=cxux
+                               basic_os=cxux
                                ;;
                        nindy960)
                                basic_machine=i960-intel
-                               os=nindy
+                               basic_os=nindy
                                ;;
                        mon960)
                                basic_machine=i960-intel
-                               os=mon960
+                               basic_os=mon960
                                ;;
                        nonstopux)
                                basic_machine=mips-compaq
-                               os=nonstopux
+                               basic_os=nonstopux
                                ;;
                        os400)
                                basic_machine=powerpc-ibm
-                               os=os400
+                               basic_os=os400
                                ;;
                        OSE68000 | ose68000)
                                basic_machine=m68000-ericsson
-                               os=ose
+                               basic_os=ose
                                ;;
                        os68k)
                                basic_machine=m68k-none
-                               os=os68k
+                               basic_os=os68k
                                ;;
                        paragon)
                                basic_machine=i860-intel
-                               os=osf
+                               basic_os=osf
                                ;;
                        parisc)
                                basic_machine=hppa-unknown
-                               os=linux
+                               basic_os=linux
+                               ;;
+                       psp)
+                               basic_machine=mipsallegrexel-sony
+                               basic_os=psp
                                ;;
                        pw32)
                                basic_machine=i586-unknown
-                               os=pw32
+                               basic_os=pw32
                                ;;
                        rdos | rdos64)
                                basic_machine=x86_64-pc
-                               os=rdos
+                               basic_os=rdos
                                ;;
                        rdos32)
                                basic_machine=i386-pc
-                               os=rdos
+                               basic_os=rdos
                                ;;
                        rom68k)
                                basic_machine=m68k-rom68k
-                               os=coff
+                               basic_os=coff
                                ;;
                        sa29200)
                                basic_machine=a29k-amd
-                               os=udi
+                               basic_os=udi
                                ;;
                        sei)
                                basic_machine=mips-sei
-                               os=seiux
+                               basic_os=seiux
                                ;;
                        sequent)
                                basic_machine=i386-sequent
-                               os=
+                               basic_os=
                                ;;
                        sps7)
                                basic_machine=m68k-bull
-                               os=sysv2
+                               basic_os=sysv2
                                ;;
                        st2000)
                                basic_machine=m68k-tandem
-                               os=
+                               basic_os=
                                ;;
                        stratus)
                                basic_machine=i860-stratus
-                               os=sysv4
+                               basic_os=sysv4
                                ;;
                        sun2)
                                basic_machine=m68000-sun
-                               os=
+                               basic_os=
                                ;;
                        sun2os3)
                                basic_machine=m68000-sun
-                               os=sunos3
+                               basic_os=sunos3
                                ;;
                        sun2os4)
                                basic_machine=m68000-sun
-                               os=sunos4
+                               basic_os=sunos4
                                ;;
                        sun3)
                                basic_machine=m68k-sun
-                               os=
+                               basic_os=
                                ;;
                        sun3os3)
                                basic_machine=m68k-sun
-                               os=sunos3
+                               basic_os=sunos3
                                ;;
                        sun3os4)
                                basic_machine=m68k-sun
-                               os=sunos4
+                               basic_os=sunos4
                                ;;
                        sun4)
                                basic_machine=sparc-sun
-                               os=
+                               basic_os=
                                ;;
                        sun4os3)
                                basic_machine=sparc-sun
-                               os=sunos3
+                               basic_os=sunos3
                                ;;
                        sun4os4)
                                basic_machine=sparc-sun
-                               os=sunos4
+                               basic_os=sunos4
                                ;;
                        sun4sol2)
                                basic_machine=sparc-sun
-                               os=solaris2
+                               basic_os=solaris2
                                ;;
                        sun386 | sun386i | roadrunner)
                                basic_machine=i386-sun
-                               os=
+                               basic_os=
                                ;;
                        sv1)
                                basic_machine=sv1-cray
-                               os=unicos
+                               basic_os=unicos
                                ;;
                        symmetry)
                                basic_machine=i386-sequent
-                               os=dynix
+                               basic_os=dynix
                                ;;
                        t3e)
                                basic_machine=alphaev5-cray
-                               os=unicos
+                               basic_os=unicos
                                ;;
                        t90)
                                basic_machine=t90-cray
-                               os=unicos
+                               basic_os=unicos
                                ;;
                        toad1)
                                basic_machine=pdp10-xkl
-                               os=tops20
+                               basic_os=tops20
                                ;;
                        tpf)
                                basic_machine=s390x-ibm
-                               os=tpf
+                               basic_os=tpf
                                ;;
                        udi29k)
                                basic_machine=a29k-amd
-                               os=udi
+                               basic_os=udi
                                ;;
                        ultra3)
                                basic_machine=a29k-nyu
-                               os=sym1
+                               basic_os=sym1
                                ;;
                        v810 | necv810)
                                basic_machine=v810-nec
-                               os=none
+                               basic_os=none
                                ;;
                        vaxv)
                                basic_machine=vax-dec
-                               os=sysv
+                               basic_os=sysv
                                ;;
                        vms)
                                basic_machine=vax-dec
-                               os=vms
+                               basic_os=vms
                                ;;
                        vsta)
                                basic_machine=i386-pc
-                               os=vsta
+                               basic_os=vsta
                                ;;
                        vxworks960)
                                basic_machine=i960-wrs
-                               os=vxworks
+                               basic_os=vxworks
                                ;;
                        vxworks68)
                                basic_machine=m68k-wrs
-                               os=vxworks
+                               basic_os=vxworks
                                ;;
                        vxworks29k)
                                basic_machine=a29k-wrs
-                               os=vxworks
+                               basic_os=vxworks
                                ;;
                        xbox)
                                basic_machine=i686-pc
-                               os=mingw32
+                               basic_os=mingw32
                                ;;
                        ymp)
                                basic_machine=ymp-cray
-                               os=unicos
+                               basic_os=unicos
                                ;;
                        *)
                                basic_machine=$1
-                               os=
+                               basic_os=
                                ;;
                esac
                ;;
@@ -683,17 +686,17 @@ case $basic_machine in
        bluegene*)
                cpu=powerpc
                vendor=ibm
-               os=cnk
+               basic_os=cnk
                ;;
        decsystem10* | dec10*)
                cpu=pdp10
                vendor=dec
-               os=tops10
+               basic_os=tops10
                ;;
        decsystem20* | dec20*)
                cpu=pdp10
                vendor=dec
-               os=tops20
+               basic_os=tops20
                ;;
        delta | 3300 | motorola-3300 | motorola-delta \
              | 3300-motorola | delta-motorola)
@@ -703,7 +706,7 @@ case $basic_machine in
        dpx2*)
                cpu=m68k
                vendor=bull
-               os=sysv3
+               basic_os=sysv3
                ;;
        encore | umax | mmax)
                cpu=ns32k
@@ -712,7 +715,7 @@ case $basic_machine in
        elxsi)
                cpu=elxsi
                vendor=elxsi
-               os=${os:-bsd}
+               basic_os=${basic_os:-bsd}
                ;;
        fx2800)
                cpu=i860
@@ -725,7 +728,7 @@ case $basic_machine in
        h3050r* | hiux*)
                cpu=hppa1.1
                vendor=hitachi
-               os=hiuxwe2
+               basic_os=hiuxwe2
                ;;
        hp3k9[0-9][0-9] | hp9[0-9][0-9])
                cpu=hppa1.0
@@ -768,36 +771,36 @@ case $basic_machine in
        i*86v32)
                cpu=`echo "$1" | sed -e 's/86.*/86/'`
                vendor=pc
-               os=sysv32
+               basic_os=sysv32
                ;;
        i*86v4*)
                cpu=`echo "$1" | sed -e 's/86.*/86/'`
                vendor=pc
-               os=sysv4
+               basic_os=sysv4
                ;;
        i*86v)
                cpu=`echo "$1" | sed -e 's/86.*/86/'`
                vendor=pc
-               os=sysv
+               basic_os=sysv
                ;;
        i*86sol2)
                cpu=`echo "$1" | sed -e 's/86.*/86/'`
                vendor=pc
-               os=solaris2
+               basic_os=solaris2
                ;;
        j90 | j90-cray)
                cpu=j90
                vendor=cray
-               os=${os:-unicos}
+               basic_os=${basic_os:-unicos}
                ;;
        iris | iris4d)
                cpu=mips
                vendor=sgi
-               case $os in
+               case $basic_os in
                    irix*)
                        ;;
                    *)
-                       os=irix4
+                       basic_os=irix4
                        ;;
                esac
                ;;
@@ -808,26 +811,26 @@ case $basic_machine in
        *mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
                cpu=m68k
                vendor=atari
-               os=mint
+               basic_os=mint
                ;;
        news-3600 | risc-news)
                cpu=mips
                vendor=sony
-               os=newsos
+               basic_os=newsos
                ;;
        next | m*-next)
                cpu=m68k
                vendor=next
-               case $os in
+               case $basic_os in
                    openstep*)
                        ;;
                    nextstep*)
                        ;;
                    ns2*)
-                     os=nextstep2
+                     basic_os=nextstep2
                        ;;
                    *)
-                     os=nextstep3
+                     basic_os=nextstep3
                        ;;
                esac
                ;;
@@ -838,12 +841,12 @@ case $basic_machine in
        op50n-* | op60c-*)
                cpu=hppa1.1
                vendor=oki
-               os=proelf
+               basic_os=proelf
                ;;
        pa-hitachi)
                cpu=hppa1.1
                vendor=hitachi
-               os=hiuxwe2
+               basic_os=hiuxwe2
                ;;
        pbd)
                cpu=sparc
@@ -880,12 +883,12 @@ case $basic_machine in
        sde)
                cpu=mipsisa32
                vendor=sde
-               os=${os:-elf}
+               basic_os=${basic_os:-elf}
                ;;
        simso-wrs)
                cpu=sparclite
                vendor=wrs
-               os=vxworks
+               basic_os=vxworks
                ;;
        tower | tower-32)
                cpu=m68k
@@ -902,7 +905,7 @@ case $basic_machine in
        w89k-*)
                cpu=hppa1.1
                vendor=winbond
-               os=proelf
+               basic_os=proelf
                ;;
        none)
                cpu=none
@@ -955,11 +958,11 @@ case $cpu-$vendor in
        # some cases the only manufacturer, in others, it is the most popular.
        craynv-unknown)
                vendor=cray
-               os=${os:-unicosmp}
+               basic_os=${basic_os:-unicosmp}
                ;;
        c90-unknown | c90-cray)
                vendor=cray
-               os=${os:-unicos}
+               basic_os=${Basic_os:-unicos}
                ;;
        fx80-unknown)
                vendor=alliant
@@ -1003,7 +1006,7 @@ case $cpu-$vendor in
        dpx20-unknown | dpx20-bull)
                cpu=rs6000
                vendor=bull
-               os=${os:-bosx}
+               basic_os=${basic_os:-bosx}
                ;;
 
        # Here we normalize CPU types irrespective of the vendor
@@ -1012,7 +1015,7 @@ case $cpu-$vendor in
                ;;
        blackfin-*)
                cpu=bfin
-               os=linux
+               basic_os=linux
                ;;
        c54x-*)
                cpu=tic54x
@@ -1025,7 +1028,7 @@ case $cpu-$vendor in
                ;;
        e500v[12]-*)
                cpu=powerpc
-               os=$os"spe"
+               basic_os=${basic_os}"spe"
                ;;
        mips3*-*)
                cpu=mips64
@@ -1035,7 +1038,7 @@ case $cpu-$vendor in
                ;;
        m68knommu-*)
                cpu=m68k
-               os=linux
+               basic_os=linux
                ;;
        m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
                cpu=s12z
@@ -1045,7 +1048,7 @@ case $cpu-$vendor in
                ;;
        parisc-*)
                cpu=hppa
-               os=linux
+               basic_os=linux
                ;;
        pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
                cpu=i586
@@ -1105,7 +1108,7 @@ case $cpu-$vendor in
        # Recognize the canonical CPU Types that limit and/or modify the
        # company names they are paired with.
        cr16-*)
-               os=${os:-elf}
+               basic_os=${basic_os:-elf}
                ;;
        crisv32-* | etraxfs*-*)
                cpu=crisv32
@@ -1116,7 +1119,7 @@ case $cpu-$vendor in
                vendor=axis
                ;;
        crx-*)
-               os=${os:-elf}
+               basic_os=${basic_os:-elf}
                ;;
        neo-tandem)
                cpu=neo
@@ -1138,16 +1141,12 @@ case $cpu-$vendor in
                cpu=nsx
                vendor=tandem
                ;;
-       s390-*)
-               cpu=s390
-               vendor=ibm
-               ;;
-       s390x-*)
-               cpu=s390x
-               vendor=ibm
+       mipsallegrexel-sony)
+               cpu=mipsallegrexel
+               vendor=sony
                ;;
        tile*-*)
-               os=${os:-linux-gnu}
+               basic_os=${basic_os:-linux-gnu}
                ;;
 
        *)
@@ -1229,6 +1228,7 @@ case $cpu-$vendor in
                        | pyramid \
                        | riscv | riscv32 | riscv64 \
                        | rl78 | romp | rs6000 | rx \
+                       | s390 | s390x \
                        | score \
                        | sh | shl \
                        | sh[1234] | sh[24]a | sh[24]ae[lb] | sh[23]e | she[lb] 
| sh[lb]e \
@@ -1275,8 +1275,43 @@ esac
 
 # Decode manufacturer-specific aliases for certain operating systems.
 
-if [ x$os != x ]
+if [ x$basic_os != x ]
 then
+
+# First recognize some ad-hoc caes, or perhaps split kernel-os, or else just
+# set os.
+case $basic_os in
+       gnu/linux*)
+               kernel=linux
+               os=`echo $basic_os | sed -e 's|gnu/linux|gnu|'`
+               ;;
+       nto-qnx*)
+               kernel=nto
+               os=`echo $basic_os | sed -e 's|nto-qnx|qnx|'`
+               ;;
+       *-*)
+               # shellcheck disable=SC2162
+               IFS="-" read kernel os <<EOF
+$basic_os
+EOF
+               ;;
+       # Default OS when just kernel was specified
+       nto*)
+               kernel=nto
+               os=`echo $basic_os | sed -e 's|nto|qnx|'`
+               ;;
+       linux*)
+               kernel=linux
+               os=`echo $basic_os | sed -e 's|linux|gnu|'`
+               ;;
+       *)
+               kernel=
+               os=$basic_os
+               ;;
+esac
+
+# Now, normalize the OS (knowing we just have one component, it's not a kernel,
+# etc.)
 case $os in
        # First match some system type aliases that might get confused
        # with valid system types.
@@ -1296,9 +1331,6 @@ case $os in
        unixware*)
                os=sysv4.2uw
                ;;
-       gnu/linux*)
-               os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
-               ;;
        # es1800 is here to avoid being matched by es* (a different OS)
        es1800*)
                os=ose
@@ -1322,10 +1354,7 @@ case $os in
        sco3.2.[4-9]*)
                os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
                ;;
-       sco3.2v[4-9]* | sco5v6*)
-               # Don't forget version if it is 3.2v4 or newer.
-               ;;
-       scout)
+       sco*v* | scout)
                # Don't match below
                ;;
        sco*)
@@ -1334,41 +1363,6 @@ case $os in
        psos*)
                os=psos
                ;;
-       # Now 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* | esix* | aix* | cnk* | sunos | sunos[34]*\
-            | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
-            | sym* | kopensolaris* | plan9* \
-            | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \
-            | aos* | aros* | cloudabi* | sortix* | twizzler* \
-            | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
-            | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
-            | knetbsd* | mirbsd* | netbsd* \
-            | bitrig* | openbsd* | solidbsd* | libertybsd* | os108* \
-            | ekkobsd* | kfreebsd* | freebsd* | riscix* | lynxos* \
-            | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \
-            | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \
-            | udi* | eabi* | lites* | ieee* | go32* | aux* | hcos* \
-            | chorusrdb* | cegcc* | glidix* \
-            | cygwin* | msys* | pe* | moss* | proelf* | rtems* \
-            | midipix* | mingw32* | mingw64* | linux-gnu* | linux-android* \
-            | linux-newlib* | linux-musl* | linux-uclibc* \
-            | uxpv* | beos* | mpeix* | udk* | moxiebox* \
-            | interix* | uwin* | mks* | rhapsody* | darwin* \
-            | openstep* | oskit* | conix* | pw32* | nonstopux* \
-            | storm-chaos* | tops10* | tenex* | tops20* | its* \
-            | os2* | vos* | palmos* | uclinux* | nucleus* \
-            | morphos* | superux* | rtmk* | windiss* \
-            | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \
-            | skyos* | haiku* | rdos* | toppers* | drops* | es* \
-            | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
-            | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
-            | nsk* | powerunix* | genode*)
-       # Remember, each alternative MUST END IN *, to match a version number.
-               ;;
        qnx*)
                case $cpu in
                    x86 | i*86)
@@ -1381,31 +1375,19 @@ case $os in
        hiux*)
                os=hiuxwe2
                ;;
-       nto-qnx*)
-               ;;
-       nto*)
-               os=`echo $os | sed -e 's|nto|nto-qnx|'`
-               ;;
-       sim | xray | os68k* | v88r* \
-           | windows* | osx | abug | netware* | os9* \
-           | macos* | mpw* | magic* | mmixware* | mon960* | lnews*)
-               ;;
-       linux-dietlibc)
-               os=linux-dietlibc
-               ;;
-       linux*)
-               os=`echo $os | sed -e 's|linux|linux-gnu|'`
-               ;;
        lynx*178)
                os=lynxos178
                ;;
        lynx*5)
                os=lynxos5
                ;;
+       lynxos*)
+               # don't get caught up in next wildcard
+               ;;
        lynx*)
                os=lynxos
                ;;
-       mac*)
+       mac[0-9]*)
                os=`echo "$os" | sed -e 's|mac|macos|'`
                ;;
        opened*)
@@ -1475,18 +1457,12 @@ case $os in
        sysvr4)
                os=sysv4
                ;;
-       # This must come after sysvr4.
-       sysv*)
-               ;;
        ose*)
                os=ose
                ;;
        *mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
                os=mint
                ;;
-       zvmoe)
-               os=zvmoe
-               ;;
        dicos*)
                os=dicos
                ;;
@@ -1503,19 +1479,11 @@ case $os in
                        ;;
                esac
                ;;
-       nacl*)
-               ;;
-       ios)
-               ;;
-       none)
-               ;;
-       *-eabi)
-               ;;
        *)
-               echo Invalid configuration \`"$1"\': system \`"$os"\' not 
recognized 1>&2
-               exit 1
+               # No normalization, but not necessarily accepted, that comes 
below.
                ;;
 esac
+
 else
 
 # Here we handle the default operating systems that come with various machines.
@@ -1528,6 +1496,7 @@ else
 # will signal an error saying that MANUFACTURER isn't an operating
 # system, and we'll never get to this point.
 
+kernel=
 case $cpu-$vendor in
        score-*)
                os=elf
@@ -1539,7 +1508,8 @@ case $cpu-$vendor in
                os=riscix1.2
                ;;
        arm*-rebel)
-               os=linux
+               kernel=linux
+               os=gnu
                ;;
        arm*-semi)
                os=aout
@@ -1705,84 +1675,169 @@ case $cpu-$vendor in
                os=none
                ;;
 esac
+
 fi
 
+# Now, validate our (potentially fixed-up) OS.
+case $os in
+       # Sometimes we do "kernel-abi", so those need to count as OSes.
+       musl* | newlib* | uclibc*)
+               ;;
+       # Likewise for "kernel-libc"
+       eabi | eabihf | gnueabi | gnueabihf)
+               ;;
+       # Now accept the basic system types.
+       # The portable systems comes first.
+       # Each alternative MUST end in a * to match a version number.
+       gnu* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
+            | *vms* | esix* | aix* | cnk* | sunos | sunos[34]* \
+            | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
+            | sym* |  plan9* | psp* | sim* | xray* | os68k* | v88r* \
+            | hiux* | abug | nacl* | netware* | windows* \
+            | os9* | macos* | osx* | ios* \
+            | mpw* | magic* | mmixware* | mon960* | lnews* \
+            | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \
+            | aos* | aros* | cloudabi* | sortix* | twizzler* \
+            | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
+            | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
+            | mirbsd* | netbsd* | dicos* | openedition* | ose* \
+            | bitrig* | openbsd* | solidbsd* | libertybsd* | os108* \
+            | ekkobsd* | freebsd* | riscix* | lynxos* | os400* \
+            | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \
+            | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \
+            | udi* | lites* | ieee* | go32* | aux* | hcos* \
+            | chorusrdb* | cegcc* | glidix* \
+            | cygwin* | msys* | pe* | moss* | proelf* | rtems* \
+            | midipix* | mingw32* | mingw64* | mint* \
+            | uxpv* | beos* | mpeix* | udk* | moxiebox* \
+            | interix* | uwin* | mks* | rhapsody* | darwin* \
+            | openstep* | oskit* | conix* | pw32* | nonstopux* \
+            | storm-chaos* | tops10* | tenex* | tops20* | its* \
+            | os2* | vos* | palmos* | uclinux* | nucleus* | morphos* \
+            | scout* | superux* | sysv* | rtmk* | tpf* | windiss* \
+            | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \
+            | skyos* | haiku* | rdos* | toppers* | drops* | es* \
+            | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
+            | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
+            | nsk* | powerunix* | genode* | zvmoe* )
+               ;;
+       # This one is extra strict with allowed versions
+       sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
+               # Don't forget version if it is 3.2v4 or newer.
+               ;;
+       none)
+               ;;
+       *)
+               echo Invalid configuration \`"$1"\': OS \`"$os"\' not 
recognized 1>&2
+               exit 1
+               ;;
+esac
+
+# As a final step for OS-related things, validate the OS-kernel combination
+# (given a valid OS), if there is a kernel.
+case $kernel-$os in
+       linux-gnu* | linux-dietlibc* | linux-android* | linux-newlib* | 
linux-musl* | linux-uclibc* )
+               ;;
+       -dietlibc* | -newlib* | -musl* | -uclibc* )
+               # These are just libc implementations, not actual OSes, and thus
+               # require a kernel.
+               echo "Invalid configuration \`$1': libc \`$os' needs explicit 
kernel." 1>&2
+               exit 1
+               ;;
+       kfreebsd*-gnu* | kopensolaris*-gnu*)
+               ;;
+       nto-qnx*)
+               ;;
+       *-eabi* | *-gnueabi*)
+               ;;
+       -*)
+               # Blank kernel with real OS is always fine.
+               ;;
+       *-*)
+               echo "Invalid configuration \`$1': Kernel \`$kernel' not known 
to work with OS \`$os'." 1>&2
+               exit 1
+               ;;
+esac
+
 # Here we handle the case where we know the os, and the CPU type, but not the
 # manufacturer.  We pick the logical manufacturer.
 case $vendor in
        unknown)
-               case $os in
-                       riscix*)
+               case $cpu-$os in
+                       *-riscix*)
                                vendor=acorn
                                ;;
-                       sunos*)
+                       *-sunos*)
                                vendor=sun
                                ;;
-                       cnk*|-aix*)
+                       *-cnk* | *-aix*)
                                vendor=ibm
                                ;;
-                       beos*)
+                       *-beos*)
                                vendor=be
                                ;;
-                       hpux*)
+                       *-hpux*)
                                vendor=hp
                                ;;
-                       mpeix*)
+                       *-mpeix*)
                                vendor=hp
                                ;;
-                       hiux*)
+                       *-hiux*)
                                vendor=hitachi
                                ;;
-                       unos*)
+                       *-unos*)
                                vendor=crds
                                ;;
-                       dgux*)
+                       *-dgux*)
                                vendor=dg
                                ;;
-                       luna*)
+                       *-luna*)
                                vendor=omron
                                ;;
-                       genix*)
+                       *-genix*)
                                vendor=ns
                                ;;
-                       clix*)
+                       *-clix*)
                                vendor=intergraph
                                ;;
-                       mvs* | opened*)
+                       *-mvs* | *-opened*)
+                               vendor=ibm
+                               ;;
+                       *-os400*)
                                vendor=ibm
                                ;;
-                       os400*)
+                       s390-* | s390x-*)
                                vendor=ibm
                                ;;
-                       ptx*)
+                       *-ptx*)
                                vendor=sequent
                                ;;
-                       tpf*)
+                       *-tpf*)
                                vendor=ibm
                                ;;
-                       vxsim* | vxworks* | windiss*)
+                       *-vxsim* | *-vxworks* | *-windiss*)
                                vendor=wrs
                                ;;
-                       aux*)
+                       *-aux*)
                                vendor=apple
                                ;;
-                       hms*)
+                       *-hms*)
                                vendor=hitachi
                                ;;
-                       mpw* | macos*)
+                       *-mpw* | *-macos*)
                                vendor=apple
                                ;;
-                       *mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
+                       *-*mint | *-mint[0-9]* | *-*MiNT | *-MiNT[0-9]*)
                                vendor=atari
                                ;;
-                       vos*)
+                       *-vos*)
                                vendor=stratus
                                ;;
                esac
                ;;
 esac
 
-echo "$cpu-$vendor-$os"
+echo "$cpu-$vendor-${kernel:+$kernel-}$os"
 exit
 
 # Local variables:

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                        |   4 +
 config.guess                     |  12 +-
 config.sub                       | 579 +++++++++++++++++++++------------------
 extension/build-aux/ChangeLog    |   4 +
 extension/build-aux/config.guess |  12 +-
 extension/build-aux/config.sub   | 579 +++++++++++++++++++++------------------
 6 files changed, 664 insertions(+), 526 deletions(-)


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