[ns] Make Error~

["jwkwon" <jwkwon@palgong.knu.ac.kr>]

Hi~

Is there anybody who knows the following errors???
After I make ns-allinone-2.1b6a, repetition of the same pattern error is showing (undefined reference to `TclClass type_info function')

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tfrc.o: In function `TfrcAgent::TfrcAgent(void)':
tfrc.o(.text+0x1da): undefined reference to `TracedInt virtual table'
tfrc.o: In function `TfrcClass type_info function':
tfrc.o(.gnu.linkonce.t.__tf9TfrcClass+0x16): undefined reference to `TclClass type_info function'
tfrc.o(.gnu.linkonce.t.__tf9TfrcClass+0x1e): undefined reference to `TclClass type_info node'
tfrc-sink.o: In function `TfrcSinkClass type_info function':
tfrc-sink.o(.gnu.linkonce.t.__tf13TfrcSinkClass+0x16): undefined reference to `TclClass type_info function'
tfrc-sink.o(.gnu.linkonce.t.__tf13TfrcSinkClass+0x1e): undefined reference to `TclClass type_info node'
energy-model.o: In function `EnergyModelClass type_info function':
energy-model.o(.gnu.linkonce.t.__tf16EnergyModelClass+0x16): undefined reference to `TclClass type_info function'
energy-model.o(.gnu.linkonce.t.__tf16EnergyModelClass+0x1e): undefined reference to `TclClass type_info node'
energy-model.o: In function `EnergyModel type_info function':
energy-model.o(.gnu.linkonce.t.__tf11EnergyModel+0x16): undefined reference to `TclObject type_info function'
energy-model.o(.gnu.linkonce.t.__tf11EnergyModel+0x1e): undefined reference to `TclObject type_info node'
ping.o: In function `PingClass type_info function':
ping.o(.gnu.linkonce.t.__tf9PingClass+0x16): undefined reference to `TclClass type_info function'
ping.o(.gnu.linkonce.t.__tf9PingClass+0x1e): undefined reference to `TclClass type_info node'
tcp-rfc793edu.o: In function `RFC793eduTcpClass type_info function':
tcp-rfc793edu.o(.gnu.linkonce.t.__tf17RFC793eduTcpClass+0x16): undefined reference to `TclClass type_info function'
tcp-rfc793edu.o(.gnu.linkonce.t.__tf17RFC793eduTcpClass+0x1e): undefined reference to `TclClass type_info node'  
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Thanx...
J.