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Prune empty cases from toplevel configure.ac


This patch, relative to a tree with my deprecated targets removal patch 
<http://gcc.gnu.org/ml/gcc-patches/2011-03/msg01088.html> applied, further 
cleans up the toplevel configure.ac by removing empty cases from a case 
statement.  The original patch still needs review by someone able to 
approve the patch as a whole, but as the only apparent controversy so far 
concerned empty cases I hope this patch can resolve the concerns over that 
bit of the original patch.

The effect of removing empty cases in this particular case statement is 
that any subsequent case matching the target, generally

  *-*-*)
    noconfigdirs="$noconfigdirs ${libgcj}"
    ;;

comes into effect.  That particular case is of no effect for targets with 
no GCC support since they can't be trying to build libgcj or other GCC 
target libraries anyway.  All targets removed from the case statement by 
this patch have no GCC support (after the deprecation patch).  In 
addition, some empty cases were left behind, either because the targets 
did have GCC support or because a case other than *-*-* would trigger if 
they were removed.

OK to commit?

2011-03-21  Joseph Myers  <joseph@codesourcery.com>

	* configure.ac (arm-semi-aof, crx-*-*, parisc*-*-linux*,
	i370-*-opened*, i[[3456789]]86-moss-msdos | i[[3456789]]86-*-moss*
	| i[[3456789]]86-*-uwin*, mcore-*-pe*): Remove empty cases.
	* configure: Regenerate.

--- configure.ac	2011-03-17 20:36:23.000000000 +0000
+++ configure.ac.new	2011-03-21 10:23:01.000000000 +0000
@@ -672,8 +672,6 @@
   arc-*-*)
     noconfigdirs="$noconfigdirs target-libgloss"
     ;;
-  arm-semi-aof )
-    ;;
   arm-*-coff | strongarm-*-coff | xscale-*-coff)
     noconfigdirs="$noconfigdirs ${libgcj}"
     libgloss_dir=arm
@@ -743,8 +741,6 @@
     esac
     libgloss_dir=cris
     ;;
-  crx-*-*)
-    ;;
   d10v-*-*)
     noconfigdirs="$noconfigdirs target-libstdc++-v3 target-libgloss ${libgcj}"
     ;;
@@ -778,7 +774,7 @@
     # headers, crt*.o, etc., all of which are needed by these.
     noconfigdirs="$noconfigdirs target-zlib"
     ;;
-  parisc*-*-linux* | hppa*-*-linux*)
+  hppa*-*-linux*)
     ;;
   hppa*-*-*elf* | \
   hppa*-*-lites* | \
@@ -812,8 +808,6 @@
     # No gdb or ld support yet.
     noconfigdirs="$noconfigdirs ${libgcj} tix readline mmalloc libgui itcl gdb ld"
     ;;
-  i370-*-opened*)
-    ;;
   i[[3456789]]86-*-coff | i[[3456789]]86-*-elf)
     noconfigdirs="$noconfigdirs ${libgcj}"
     libgloss_dir=i386
@@ -857,8 +851,7 @@
       echo "Warning: winsup/cygwin is missing so newlib can't be built."
     fi
     ;;
-  i[[3456789]]86-moss-msdos | i[[3456789]]86-*-moss* | \
-  i[[3456789]]86-*-uwin* | i[[3456789]]86-*-interix* )
+  i[[3456789]]86-*-interix* )
     ;;
   i[[3456789]]86-*-pe)
     noconfigdirs="$noconfigdirs target-libgloss"
@@ -899,8 +892,6 @@
   m68*-*-* | fido-*-*)
     libgloss_dir=m68k
     ;;
-  mcore-*-pe*)
-    ;;
   mmix-*-*)
     noconfigdirs="$noconfigdirs target-libffi target-boehm-gc gdb libgloss"
     unsupported_languages="$unsupported_languages fortran java"

-- 
Joseph S. Myers
joseph@codesourcery.com


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