--- a/SConstruct	Tue Feb 20 22:55:09 2007 -0800
+++ b/SConstruct	Tue Feb 20 23:26:59 2007 -0800
@@ -173,6 +173,7 @@
     'internet-node.cc',
     'net-device.cc',
     'serial-net-device.cc',
+    'serial-phy.cc',
     'mac-address.cc',
     'ipv4-header.cc',
     'udp-header.cc',
@@ -214,6 +215,7 @@
     'ipv4-l4-demux.h',
     'net-device-list.h',
     'serial-net-device.h',
+    'serial-phy.h',
     'llc-snap-header.h',
     'header-utils.h',
     'protocol.h',