PR bootstrap/11932, PR bootstrap/11933

	PR bootstrap/11932, PR bootstrap/11933
	(I don't know if it will fix either of them, but it relates
	to them.)
	* configure.in: Don't use shared config.cache for target
	directories.
	* configure: Regenerate.

From-SVN: r75359

ChangeLog

+2004-01-03  Nathanael Nerode  <neroden@gcc.gnu.org>
+
+	PR bootstrap/11932, PR bootstrap/11933
+	(I don't know if it will fix either of them, but it relates
+	to them.)
+	* configure.in: Don't use shared config.cache for target
+	directories.
+	* configure: Regenerate.
+
 2004-01-02  Dan Nicolaescu  <dann@ics.uci.edu>
 
 	* MAINTAINERS: Add myself to 'Write After Approval' section.

configure.in

@@ -1850,8 +1850,17 @@ if test x${with_newlib} != xno && echo " ${target_configdirs} " | grep " newlib
   target_configargs="--with-newlib ${target_configargs}"
 fi
 
+# Different target subdirs use different values of certain variables
+# (notably CXX).  Worse, multilibs use *lots* of different values.
+# Worse yet, autoconf 2.5x makes some of these 'precious', meaning that
+# it doesn't automatically accept command-line overrides of them.
+# This means it's not safe for target subdirs to share a cache file,
+# which is disgusting, but there you have it.  Hopefully this can be
+# fixed in future.  It's still worthwhile to use a cache file for each
+# directory.  I think.
+
 # Pass the appropriate --host, --build, and --cache-file arguments.
-target_configargs="--cache-file=../config.cache --host=${target_alias} --build=${build_alias} ${target_configargs}"
+target_configargs="--cache-file=config.cache --host=${target_alias} --build=${build_alias} ${target_configargs}"
 
 # provide a proper gxx_include_dir.
 # Note, if you change the default, make sure to fix both here and in