ns-2.1b5 installation problem,

[Zhiwei Xiao <xiao@cs.unc.edu>]

  Hi, there:
   
    I am trying to install the latest release ns-2.1b5. But something
weired like this came out:

cc -c -O    -I./../generic -I.  -DHAVE_GETCWD=1 -DNO_STRING_H=1
-DHAVE_UNISTD_H=1 -DUSE_TERMIOS=1 -DHAVE_SYS_TIME_H=1
-DTIME_WITH_SYS_TIME=1 -DHAVE_TZNAME=1 -DHAVE_TIMEZONE_VAR=1
-DHAVE_ST_BLKSIZE=1 -Dstrtod=fixstrtod -DSTDC_HEADERS=1 -DNO_UNION_WAIT=1
-DNEED_MATHERR=1 -DRETSIGTYPE=void -Dvfork=fork -DHAVE_SYS_IOCTL_H=1
-DHAVE_SYS_FILIO_H=1        -DTCL_SHLIB_EXT=\".so\"
./../generic/tclIOUtil.c
"./../generic/tclIOUtil.c", line 67: undefined symbol: access
"./../generic/tclIOUtil.c", line 67: warning: initialization type mismatch
"./../generic/tclIOUtil.c", line 67: non-constant initializer: op "U&"
"./../generic/tclIOUtil.c", line 243: cannot recover from previous errors
*** Error code 10
make: Fatal error: Command failed for target `tclIOUtil.o'
tcl8.0.4 make failed! Exiting ...


could anyone give some advice on that? I appreciate it!
    
David Xiao
UNC-CH CS