--- a/SConstruct	Mon Dec 04 11:04:49 2006 +0100
+++ b/SConstruct	Mon Dec 04 12:33:54 2006 +0100
@@ -47,6 +47,7 @@
 simu = build.Ns3Module('simulator', 'src/simulator')
 ns3.add(simu)
 simu.add_dep('core')
+simu.add_external_dep('m')
 simu.add_sources([
     'high-precision.cc',
     'time.cc',