Reinstate CONFIG_CROSS_COMPILE_PREFIX

Config.in

@@ -363,6 +363,16 @@ config LFS
 	  cp, mount, tar, and many others.  If you want to access files larger
 	  than 2 Gigabytes, enable this option.  Otherwise, leave it set to 'N'.
 
+config CROSS_COMPILER_PREFIX
+	string "Cross Compiler prefix"
+	default ""
+	help
+	  If you want to build BusyBox with a cross compiler, then you
+	  will need to set this to the cross-compiler prefix, for example,
+	  "i386-uclibc-". Note that CROSS_COMPILE environment variable
+	  or "make CROSS_COMPILE=xxx ..." will override this selection.
+	  For native build leave it empty.
+
 endmenu
 
 menu 'Debugging Options'