Index: build/apr_common.m4
===================================================================
--- build/apr_common.m4	(revision 1172392)
+++ build/apr_common.m4	(working copy)
@@ -209,7 +209,7 @@
   if test "x$apr_ste_save_$1" = "x$$1"; then
     $2$1=
   else
-    $2$1=`echo $$1 | sed -e "s%${apr_ste_save_$1}%%"`
+    $2$1=`echo $$1 | sed -e "s%^.\\{${#apr_ste_save_$1}\\}%%"`
     $1="$apr_ste_save_$1"
   fi
 fi