--- a/src/internet-stack/wscript	Fri Sep 05 20:00:40 2008 -0700
+++ b/src/internet-stack/wscript	Fri Sep 05 21:12:00 2008 -0700
@@ -135,7 +135,12 @@
         'pending-data.cc',
         'sequence-number.cc',
         'rtt-estimator.cc',
+        'nsc-tcp-socket-impl.cc',
+        'nsc-tcp-l4-protocol.cc',
+        'nsc-tcp-socket-factory-impl.cc',
+        'nsc-sysctl.cc',
         ]
+    obj.uselib = 'DL'
 
     headers = bld.create_obj('ns3header')
     headers.module = 'internet-stack'
@@ -149,12 +154,6 @@
         'ipv4-static-routing.h',
         ]
 
-    if bld.env()['NSC_ENABLED']:
-        obj.source.append ('nsc-tcp-socket-impl.cc')
-        obj.source.append ('nsc-tcp-l4-protocol.cc')
-        obj.source.append ('nsc-tcp-socket-factory-impl.cc')
-        obj.source.append ('nsc-sysctl.cc')
-        obj.uselib = 'DL'
-        
+    if bld.env()['NSC_ENABLED']:        
         builddir = os.path.abspath(os.path.join(bld.env()['NS3_BUILDDIR'], bld.env ().variant()))
         NscBuildTask(builddir)