Add dgux as a valid OS. Add msdos as an invalid, but accepted, os.

diff --git a/config.sub b/config.sub
index dac9ab8..6c9012d 100755 (executable)
--- a/config.sub
+++ b/config.sub
@@ -17,6 +17,10 @@
 # configure@cygnus.com
 
 # decode aliases into canonical names
+# Note that aliases MUST fit into 12 characters or less otherwise the
+# install targets and subdir builds all die on machines that support
+# only 14 char file names.  They die miserably on machines that rudely
+# enforce the 14 character limit.
 
 case "$1" in
 # cpu alone is a valid alias for cpu-none-none.
@@ -213,17 +217,17 @@ mmax)
 news | news700 | news800 | news900)
        cpu=m68k
        vendor=sony
-       os=newsos3 # Based on bsd-4.3
+       os=newsos # newsos3c or newsos4c, c stands for cisc. Based on bsd-4.3.
        ;;
 news1000)
        cpu=m68030
        vendor=sony
-       os=newsos3 # ?
+       os=newsos
        ;;
 news-3600 | bigmips | risc-news)
        cpu=mips
        vendor=sony
-       os=newsos4 # Presumably?
+       os=newsos # Presumably newsos4r, r stands for risc. Based on bsd-4.3.
        ;;
 next)
        cpu=m68k
@@ -366,7 +370,7 @@ xmp)
 
        if [ "${cpu}" = "$1" ] ; then
                # no vendor so this is an invalid name.
-               echo '***' No vendor: configuration \`$1\' not recognized 1>&2
+               echo '***' Configuration \"$1\" not recognized 1>&2
                exit 1
        else
                # parse out vendor
@@ -426,8 +430,8 @@ esac
 # verify that the os is known, if it exists.
 
 case "${os}" in
-aix* | aout | bout | bsd* | coff | ctix* | dynix* | esix* | hpux* \
-       | hds | irix* | isc* | kern | mach* | newsos* | nindy* | none \
+aix* | aout | bout | bsd* | coff | ctix* | dgux* | dynix* | esix* | hpux* \
+       | hds | irix* | isc* | kern | mach* | msdos* | newsos* | nindy* | none \
        | osf* | sco* | sunos* | sysv* | ultrix* | unos* | v88r* \
        | vms* | vxworks* | sym[1-9]* | unicos* | uts | svr4 \
        | amigados)