(toplevel patch) simplify configure

[Nathanael Nerode <neroden@twcny.rr.com>]

The variables CC_FOR_TARGET, CXX_FOR_TARGET, GCJ_FOR_TARGET were substituted
in 'configure' if Canadian, and in configure.in otherwise.  They are now
substituted in 'configure.in' always.  (Their values do not change.)  Tested 
with some combinations of host & target on i686-pc-linux-gnu.

This might conceivably make it harder to do Canadian cross builds targeting 
v810, which sets CC_FOR_TARGET in its target Makefile fragment.  :-/  If 
anyone cares, I'll try to work up some sort of fix.

	* configure: Remove unneeded 'export's.  Make CC_FOR_TARGET, 
	CXX_FOR_TARGET, GCJ_FOR_TARGET substituted in configure.in only.

Index: configure
===================================================================
RCS file: /cvs/src/src/configure,v
retrieving revision 1.32
diff -u -r1.32 configure
--- configure	11 Dec 2002 04:14:47 -0000	1.32
+++ configure	11 Dec 2002 04:19:45 -0000
@@ -869,16 +869,16 @@
 done
 
 
+tools="AR AR_FOR_TARGET AS AS_FOR_TARGET BISON CC_FOR_BUILD"
+tools="${tools} DLLTOOL DLLTOOL_FOR_TARGET GCC_FOR_TARGET BUILD_PREFIX"
+tools="${tools} BUILD_PREFIX_1 LD LD_FOR_TARGET LEX MAKEINFO NM"
+tools="${tools} NM_FOR_TARGET RANLIB RANLIB_FOR_TARGET"
+tools="${tools} WINDRES WINDRES_FOR_TARGET YACC"
+tools="${tools} OBJCOPY OBJDUMP"
 if [ "${build}" != "${host}" ]; then
   # If we are doing a Canadian Cross, in which the host and build systems
   # are not the same, we set reasonable default values for the tools.
-  tools="AR AR_FOR_TARGET AS AS_FOR_TARGET BISON CC_FOR_BUILD"
-  tools="${tools} CC_FOR_TARGET CXX_FOR_TARGET GCJ_FOR_TARGET"
-  tools="${tools} DLLTOOL DLLTOOL_FOR_TARGET GCC_FOR_TARGET BUILD_PREFIX"
-  tools="${tools} BUILD_PREFIX_1 LD LD_FOR_TARGET LEX MAKEINFO NM"
-  tools="${tools} NM_FOR_TARGET RANLIB RANLIB_FOR_TARGET"
-  tools="${tools} WINDRES WINDRES_FOR_TARGET YACC"
-  tools="${tools} OBJCOPY OBJDUMP"
+  tools="${tools} RANLIB"
 
   for var in ${tools}; do
     if eval [ -z \"\$${var}\" ] && [ -r Makefile ]; then
@@ -968,17 +968,6 @@
     LEX=${LEX-flex}
   fi
 
-  # Export variables which autoconf might try to set.
-  export AS
-  export AR
-  export CC_FOR_BUILD
-  export DLLTOOL
-  export LD
-  export NM
-  export RANLIB
-  export WINDRES
-  export OBJCOPY
-  export OBJDUMP
 else
   # Set reasonable default values for some tools even if not Canadian.
   # Of course, these are different reasonable default values, originally
@@ -988,12 +977,6 @@
   # in Makefile.in, so can still be overridden by fragments.
   # This is all going to change when we autoconfiscate...
 
-  tools="AR AR_FOR_TARGET AS AS_FOR_TARGET BISON CC_FOR_BUILD"
-  tools="${tools} DLLTOOL DLLTOOL_FOR_TARGET GCC_FOR_TARGET BUILD_PREFIX"
-  tools="${tools} BUILD_PREFIX_1 LD LD_FOR_TARGET LEX MAKEINFO NM"
-  tools="${tools} NM_FOR_TARGET RANLIB_FOR_TARGET"
-  tools="${tools} WINDRES WINDRES_FOR_TARGET YACC"
-
   AR=ar
   AR_FOR_TARGET='\$(USUAL_AR_FOR_TARGET)'
   AR_FOR_TARGET=${AR_FOR_TARGET}${extra_arflags_for_target}
@@ -1063,11 +1046,6 @@
   CFLAGS=${CFLAGS-"-g"}
   CXXFLAGS=${CXXFLAGS-"-g -O2"}
 fi
-
-export CC
-export CXX
-export CFLAGS
-export CXXFLAGS
 
 # FIXME Should this be done recursively ??? (Useful for e.g. gdbtest)
 # Set up the list of links to be made.