[ns] another seg fault - urgent help needed

Hi, We are trying to modify the mac-802_11 code for a simulation and a seg fault occurs when we increased the number of nodes. Using gdb, we came across the following information: gdb ns core Core was generated by `ns csma8.tcl'. Program terminated with signal 11, Segmentation Fault. Reading

[ns] ns-2.27 compiling error

/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686-pc-cygwin/bin/ld: cannot find -ldl collect2: ld returned 1 exit status make: *** [pdns] Error 1 -- Any help would be appreciated. Thanks! - Pupun Das

[ns] no nam animation

are undefined. Here is the ns2 code I am trying to run. Hope someone can help. Thanks, Pupun Das set val(chan) Channel/WirelessChannel set val(prop) Propagation/TwoRayGround set val(netif) Phy/WirelessPhy set val(mac)Mac/802_11 set val(ant)Antenna/OmniAntenna set val(ll) LL set