diff --git a/src/acconfig.h b/src/acconfig.h
index e4bc4d5083984a786deb7cc1ee0e88f0250a0c06..592dd037266a93567a986491d4477b0f30ba2bfc 100644
--- a/src/acconfig.h
+++ b/src/acconfig.h
@@ -2,7 +2,7 @@
 || This file is part of Pike. For copyright information see COPYRIGHT.
 || Pike is distributed under GPL, LGPL and MPL. See the file COPYING
 || for more information.
-|| $Id: acconfig.h,v 1.130 2003/11/15 17:39:15 mast Exp $
+|| $Id: acconfig.h,v 1.131 2003/11/19 17:10:05 grubba Exp $
 */
 
 #ifndef MACHINE_H
@@ -65,6 +65,9 @@
 /* Define this to use the new multiset implementation. */
 #undef PIKE_NEW_MULTISETS
 
+/* Define this to get portable dumped bytecode. */
+#undef PIKE_PORTABLE_BYTECODE
+
 /* Enable profiling */
 #undef PROFILING
 
diff --git a/src/configure.in b/src/configure.in
index a9f0ba2094c0bc6c3b09166a47580f630926023c..455a374970fb6519a91f26eea9f4f12e4500f1ee 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -1,4 +1,4 @@
-AC_REVISION("$Id: configure.in,v 1.746 2003/11/15 17:39:14 mast Exp $")
+AC_REVISION("$Id: configure.in,v 1.747 2003/11/19 17:10:05 grubba Exp $")
 AC_INIT(interpret.c)
 AC_CONFIG_HEADER(machine.h)
 
@@ -1362,6 +1362,11 @@ MY_AC_ARG_WITH(keypair-loop,
 		 [enable use of keypair mapping loop method (EXPERIMENTAL).]),
 	       [AC_DEFINE(PIKE_MAPPING_KEYPAIR_LOOP)])
 
+MY_AC_ARG_WITH(portable-bytecode,
+	MY_DESCR([--with-portable-bytecode],
+		 [enable portable bytecode support (EXPERIMENTAL).]),
+	       [AC_DEFINE(PIKE_PORTABLE_BYTECODE)])
+
 MY_AC_ARG_WITH(lock,
 	       MY_DESCR([--without-lock],
 	  [enable experimental code for multicpu machines (EXPERIMENTAL).]),