[patch] Collapse related clauses in config.host and recomment

[Nathanael Nerode]

Last followup to the patch to allow unlisted hosts.  No behavioral change.

After all these patches, config.host is short and sweet.  :-)

	* config.host: Collapse identical clauses for closely related
	systems.  Rewrite comment for unsupported hosts list.  Reorganize
	a little.

--- config.host.3	2003-09-20 13:30:46.000000000 -0400
+++ config.host	2003-09-20 13:37:43.000000000 -0400
@@ -63,14 +63,14 @@
 host_extra_gcc_objs=
 out_host_hook_obj=host-default.o
 
-# Unsupported hosts list.  Do not put an entry in this list unless
-# it would otherwise be caught by a more permissive pattern.  The list
-# should be in alphabetical order.
+# Unsupported hosts list.  Generally, only include hosts known to fail here,
+# since we allow hosts not listed to be supported generically.
 case ${host} in
    i[34567]86-sequent-sysv \
  | i[34567]86-sequent-sysv[123]* \
  | i[34567]86-go32-* \
- | i[34567]86-*-go32*
+ | i[34567]86-*-go32* \
+ | vax-*-vms*
  )
     echo "*** Configuration for host ${host} not supported" 1>&2
     exit 1
@@ -101,31 +101,21 @@
   hppa1.1-*-bsd*)
     host_xmake_file="pa/x-ada"
     ;;
-  hppa1.1-*-hpux10* | hppa2*-*-hpux10*)
-    host_xmake_file="pa/x-ada"
-    ;;
-  hppa1.0-*-hpux10*)
-    host_xmake_file="pa/x-ada"
-    ;;
+  hppa1.0-*-hpux10* | hppa1.1-*-hpux10* | hppa2*-*-hpux10* | \
+  hppa1.0-*-hpux11* | hppa1.1-*-hpux11* | hppa2*-*-hpux11* | \
   hppa*64*-*-hpux11*)
     host_xmake_file="pa/x-ada"
     ;;
-  hppa1.1-*-hpux11* | hppa2*-*-hpux11*)
-    host_xmake_file="pa/x-ada"
-    ;;
-  hppa1.0-*-hpux11*)
-    host_xmake_file="pa/x-ada"
-    ;;
-  i370-*-opened*) # IBM 360/370/390 Architecture
+  i370-*-opened* | i370-*-mvs* ) # IBM 360/370/390 Architecture
     host_xm_defines='FATAL_EXIT_CODE=12'
     ;;
-  i370-*-mvs*)
-    host_xm_defines='FATAL_EXIT_CODE=12'
+  i[34567]86-sequent-ptx4*)
+    host_xm_defines="SMALL_ARG_MAX"
     ;;
-  i[34567]86-ncr-sysv4*) # NCR 3000 - ix86 running system V.4
+  i[34567]86-*-solaris2*)
     host_xm_defines="SMALL_ARG_MAX"
     ;;
-  i[34567]86-sequent-ptx4* | i[34567]86-sequent-sysv4*)
+  i[34567]86-*-sysv4*) # Intel 80386's running System V Release 4
     host_xm_defines="SMALL_ARG_MAX"
     ;;
   i[34567]86-pc-msdosdjgpp*)
@@ -138,12 +128,6 @@
         ;;
     esac
     ;;
-  i[34567]86-*-solaris2*)
-    host_xm_defines="SMALL_ARG_MAX"
-    ;;
-  i[34567]86-*-sysv4*) # Intel 80386's running System V Release 4
-    host_xm_defines="SMALL_ARG_MAX"
-    ;;
   i[34567]86-*-pe | i[34567]86-*-cygwin*)
     host_xm_file=i386/xm-cygwin.h
     host_exeext=.exe
@@ -165,9 +149,6 @@
   mips-sgi-irix6*o32) # SGI System V.4., IRIX 6, O32 ABI
     host_xm_file=mips/xm-iris5.h
     ;;
-  mips-sgi-irix5cross64) # Irix5 host, Irix 6 target, cross64
-    host_xm_file=mips/xm-iris5.h
-    ;;
   mips-sgi-irix5*) # SGI System V.4., IRIX 5
     host_xm_file=mips/xm-iris5.h
     ;;
@@ -176,8 +157,4 @@
     out_host_hook_obj=host-darwin.o
     host_xmake_file=rs6000/x-darwin
     ;;
-  vax-*-vms*) # VAXen running VMS
-    echo "Host ${host} no longer supported" 1>&2
-    exit 1
-    ;;
 esac

-- 
Nathanael Nerode  <neroden at gcc.gnu.org>
http://home.twcny.rr.com/nerode/neroden/fdl.html