problems in installation of NS

[Huseyin Cenk Ozmutlu <ozmutlu@sally.iddr.ie.psu.edu>]

My name is H. Cenk Ozmutlu and I trying to install NS for our project.
However I encountered some problems which are documented in the attached
file ("error.read"). I was wondering whether these problems are due to our
system configuration or some error in the ns-file that I downloaded. I
appreciate any help on this matter.

Thanks.
H. Cenk Ozmutlu

loading cache ./config.cache
checking for ranlib... ranlib
checking whether cross-compiling... yes
checking for getcwd... no
checking for opendir... no
checking for strstr... no
checking for strtol... no
checking for tmpnam... no
checking for waitpid... no
checking for strerror... no
checking for getwd... no
checking for wait3... no
checking for uname... no
checking for sin... no
checking for -lieee... no
checking dirent.h... no
checking how to run the C preprocessor... cc -E
checking for errno.h... yes
checking for float.h... yes
checking for values.h... yes
checking for limits.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for sys/wait.h... yes
checking for dlfcn.h... yes
checking for unistd.h... yes
checking termios vs. termio vs. sgtty... none
checking fd_set and sys/select... no
checking for sys/time.h... yes
checking whether time.h and sys/time.h may both be included... no
checking whether struct tm is in sys/time.h or time.h... sys/time.h
checking for tm_zone in struct tm... no
checking for tzname... no
checking tm_tzadj in struct tm... no
checking tm_gmtoff in struct tm... no
checking long timezone variable... no
checking time_t timezone variable... no
checking for st_blksize in struct stat... no
checking proper strstr implementation... broken, using substitute
checking for strtoul... no
checking for strtod... no
checking for strtod... (cached) no
checking for ANSI C header files... no
checking for mode_t... no
checking for pid_t... no
checking for size_t... no
checking for uid_t in sys/types.h... no
checking for opendir... (cached) no
checking union wait... no
checking matherr support... no
checking for vfork... no
checking for strncasecmp... no
checking for -lsocket... no
checking for -linet... no
checking for BSDgettimeofday... no
checking for gettimeofday... no
checking for gettimeofday declaration... missing
checking for -linet... (cached) no
checking for net/errno.h... yes
checking whether char is unsigned... tcl8.0 configuration failed! Exiting ...