+# This is probably the best place to ensure people will see this.
+if test -n "$legacy_xc_spec"
+then
+ echo <<EOF
+******************************************************************************
+**
+** Old-style XC-host specification detected: '$SBCL_XC_HOST'
+**
+** Since 1.0.41.45 SBCL expects the XC-host to be specified using
+** the --xc-host='myhost' command line option, not with a positional
+** argument. The legacy style still works, but will not be supported
+** indefinitely. Please update your build procedure.
+**
+******************************************************************************
+EOF
+fi
+