Hi,
Yeah, FC5 comes with a brand new GCC compiler (the 4.0.x series). This
is the source of all the trouble. I did the same from Tcl/Tk and I was
able to get it up and building. However, I got some other issues w/
OTcl/TclCl related to some shell incompatibilities (expression
evaluation) and
Try following the instructions on this page (to update the allinone
package with the current CVS snapshot, which is reported to support FC5):
http://nsnam.isi.edu/nsnam/index.php/Updating_Ns_Allinone
Please let me know if that helps.
Tom