Stefan Fiedler:

package/base/grep/grep.conf

@@ -1,3 +1,4 @@
+#!/bin/bash
 # --- ROCK-COPYRIGHT-NOTE-BEGIN ---
 # 
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
@@ -20,7 +21,8 @@
 # 
 # --- ROCK-COPYRIGHT-NOTE-END ---
 
+bindir="$root/bin"
 
-# because we do not have pcre in Stage-2 or on the boot disk ...
-confopt="$confopt --bindir=$root/bin --disable-perl-regexp"
-
+if [ "$stagelevel" -le 2 ] ; then
+	var_append extraconfopt " " "--disable-perl-regexp"
+fi