[ns] installation problem about ns-2.1b7a

[luo_yunqi]

Dear NS User;
 
          I am trying to install ns-2.1b7a on Red Hat Linux2.4. I download   ns-allinone-2.1b7a.tar  from ftp://ftp.isi.edu/nsnam/.
 
          And then I "tar xzvf ns-allinone-2.1b7a.tar.gz"   
 
          Secondly, I "cd ns-allinone-2.17a"
          
          At last, I use the command "./install"
 
          But I failed with these messages: 
 
 
          In file included from trace.cc:44:
          tfrc.h:116: friend declaration requires class-key, i.e. `friend class
          TfrcSendTimer'
          tfrc.h:117: friend declaration requires class-key, i.e. `friend class
          TfrcNoFeedbackTimer'
          make: *** [trace.o] Error 1
          Ns make failed!
          See http://www-mash.CS.Berkeley.EDU/ns/ns-problems.html for problems
          [root at localhost ns-allinone-2.1b7a]#
 
 
          And I didn't find the answer on http://www-mash.CS.Berkeley.EDU/ns/ns-problems.html . 
 
          Do you know the answer? Could you help me please?
 
                                                                                      yours,
 
                                                                                                           Linda