[ns] NS2 installation problem

[haider alhashmiy]

 I have installed NS2 but NAM and xgraph do not work and when I done the
validate this is what appeared

validate overall report: some tests failed:
     ./test-all-simple ./test-all-tcp ./test-all-testReno ./test-all-newreno
./test-all-sack ./test-all-tcpOptions ./test-all-tcpReset
./test-all-simple-full ./test-all-full ./test-all-testReno-full
./test-all-testReno-bayfull ./test-all-sack-full ./test-all-tcp-init-win
./test-all-tcpVariants ./test-all-LimTransmit ./test-all-aimd
./test-all-greis ./test-all-rfc793edu ./test-all-rfc2581 ./test-all-rbp
./test-all-sctp ./test-all-tcpHighspeed ./test-all-frto ./test-all-friendly
./test-all-srm ./test-all-realaudio ./test-all-ecn ./test-all-ecn-ack
./test-all-ecn-full ./test-all-quickstart ./test-all-diffusion3
./test-all-smac ./test-all-smac-multihop ./test-all-manual-routing
./test-all-hier-routing ./test-all-algo-routing ./test-all-lan
./test-all-mcast ./test-all-vc ./test-all-session ./test-all-mixmode
./test-all-red ./test-all-adaptive-red ./test-all-red-pd ./test-all-rio
./test-all-vq ./test-all-rem ./test-all-gk ./test-all-pi ./test-all-cbq
./test-all-schedule ./test-all-rr ./test-all-monitor ./test-all-jobs
./test-all-intserv ./test-all-diffserv ./test-all-webcache ./test-all-mcache
./test-all-webtraf ./test-all-mip ./test-all-links ./test-all-plm
./test-all-linkstate ./test-all-mpls ./test-all-oddBehaviors
./test-all-wireless-shadowing ./test-all-wireless-lan-aodv
./test-all-wireless-tdma ./test-all-wireless-gridkeeper
./test-all-wireless-diffusion ./test-all-wireless-lan-newnode
./test-all-satellite ./test-all-WLtutorial ./test-all-energy
./test-all-source-routing ./test-all-snoop ./test-all-misc
./test-all-tagged-trace ./test-all-message ./test-all-rng ./test-all-xcp
./test-all-wpan
to re-run a specific test, cd tcl/test; ./test-all-TEST-NAME
Notice that some tests in webcache will fail on freebsd when -O is turned
on.
This is due to some event reordering, which will disappear when -g is turned
on.

what should I do to solve this problem

Thanks