@@ -1582,6 +1582,22 @@ if test -n "$sysroot"; then

     esac

 fi

+if test "$cpu" = host; then

+    enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."

+

+    case "$cc_type" in

+        gcc)

+            check_native(){

+                $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return

+                awk "/$1=/{ match(\$0, /$1=(\\w+)/, a);print a[1];exit }" $TMPE

+            }

+            cpu=$(check_native -march || check_native -mcpu)

+        ;;

+    esac

+

+    test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"

+fi

+

 # Add processor-specific flags

 case $cpu in

     601|ppc601|PowerPC601)