Merge configure.in, configure with GCC.

configure.in

@@ -66,8 +66,19 @@ progname=$0
 # if PWD already has a value, it is probably wrong.
 if test -n "$PWD" ; then PWD=`${PWDCMD-pwd}`; fi
 
-# Export original configure arguments for use by sub-configures.
-TOPLEVEL_CONFIGURE_ARGUMENTS="$progname $@"
+# Export original configure arguments for use by sub-configures.  These
+# will be expanded once by make, and once by the shell, so they need to
+# have '$' quoted for make, and then each argument quoted for the shell.
+# What's more, the 'echo' below might expand backslashes.
+cat <<\EOF_SED > conftestsed
+s,\\,\\\\,g; s,\$,$$,g
+EOF_SED
+tmp="'$progname'"
+for ac_arg ; do
+  tmp="$tmp '"`echo "$ac_arg" | sed -fconftestsed`
+done
+rm -f conftestsed
+TOPLEVEL_CONFIGURE_ARGUMENTS="$tmp"
 AC_SUBST(TOPLEVEL_CONFIGURE_ARGUMENTS)
 
 moveifchange=${srcdir}/move-if-change
@@ -242,7 +253,8 @@ esac
 
 # If both --with-headers and --with-libs are specified, default to
 # --without-newlib.
-if test x"${with_headers}" != x && test x"${with_libs}" != x ; then
+if test x"${with_headers}" != x && test x"${with_headers} != xno \
+   && test x"${with_libs}" != x && test x"${with_libs} != xno ; then
   if test x"${with_newlib}" = x ; then
     with_newlib=no
   fi
@@ -926,7 +938,7 @@ copy_dirs=
 
 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
 # the named directory are copied to $(tooldir)/sys-include.
-if test x"${with_headers}" != x ; then
+if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
   if test x${is_cross_compiler} = xno ; then
     echo 1>&2 '***' --with-headers is only supported when cross compiling
     exit 1
@@ -943,7 +955,7 @@ fi
 # Handle --with-libs=XXX.  If the value is not "yes", the contents of
 # the name directories are copied to $(tooldir)/lib.  Multiple directories
 # are permitted.
-if test x"${with_libs}" != x ; then
+if test x"${with_libs}" != x && test x"${with_libs}" != xno ; then
   if test x${is_cross_compiler} = xno ; then
     echo 1>&2 '***' --with-libs is only supported when cross compiling
     exit 1
@@ -1754,20 +1766,24 @@ AC_SUBST_FILE(serialization_dependencies)
 # Base args.  Strip norecursion, cache-file, srcdir, host, build,
 # target and nonopt.  These are the ones we might not want to pass
 # down to subconfigures.
-baseargs=`echo " ${ac_configure_args} " | \
-	sed -e 's/ --no[[^ ]]* / /' \
-	    -e 's/ --c[[a-z-]]*[[= ]][[^ ]]* / /' \
-	    -e 's/ --sr[[a-z-]]*[[= ]][[^ ]]* / /' \
-	    -e 's/ --ho[[a-z-]]*[[= ]][[^ ]]* / /' \
-	    -e 's/ --bu[[a-z-]]*[[= ]][[^ ]]* / /' \
-	    -e 's/ --t[[a-z-]]*[[= ]][[^ ]]* / /' \
-	    -e 's/ -cache-file[[= ]][[^ ]]* / /' \
-	    -e 's/ -srcdir[[= ]][[^ ]]* / /' \
-	    -e 's/ -host[[= ]][[^ ]]* / /' \
-	    -e 's/ -build[[= ]][[^ ]]* / /' \
-	    -e 's/ -target[[= ]][[^ ]]* / /' \
-	    -e "s/ [[^' -][^ ]*] / /" \
-	    -e 's/^ *//;s/ *$//'`
+cat <<\EOF_SED > conftestsed
+s/ --no[[^ ]]* / /
+s/ --c[[a-z-]]*[[= ]][[^ ]]* / /
+s/ --sr[[a-z-]]*[[= ]][[^ ]]* / /
+s/ --ho[[a-z-]]*[[= ]][[^ ]]* / /
+s/ --bu[[a-z-]]*[[= ]][[^ ]]* / /
+s/ --t[[a-z-]]*[[= ]][[^ ]]* / /
+s/ -cache-file[[= ]][[^ ]]* / /
+s/ -srcdir[[= ]][[^ ]]* / /
+s/ -host[[= ]][[^ ]]* / /
+s/ -build[[= ]][[^ ]]* / /
+s/ -target[[= ]][[^ ]]* / /
+s/ [[^' -][^ ]*] / /
+s/^ *//;s/ *$//
+s,\\,\\\\,g; s,\$,$$,g
+EOF_SED
+baseargs=`echo " ${ac_configure_args} " | sed -fconftestsed`
+rm -f conftestsed
 
 # For the build-side libraries, we just need to pretend we're native,
 # and not use the same cache file.  Multilibs are neither needed nor