urchin5 dependancies?

[Ken Hawkins]

upon installing urchin5 i get this error:

===>  Installing for urchin-5.702
===>   Generating temporary packing list
===>  Checking if www/urchin5 already installed
/usr/libexec/ld-elf.so.1: Shared object "libc.so.4" not found, required 
by "gunzip"
tar: Error opening archive: Empty input file: Inappropriate file type 
or format
./install.sh: cannot create 
/usr/local/urchin/var/urchinwebd.conf.template: No such file or 
directory
./install.sh: cannot create /usr/local/urchin/util/urchin_daemons: No 
such file or directory
mv: rename /usr/local/urchin/data/geodata/.domain.unf to 
/usr/local/urchin/data/geodata/domain.unf: No such file or directory
mv: rename /usr/local/urchin/data/geodata/.domain.unh to 
/usr/local/urchin/data/geodata/domain.unh: No such file or directory
mv: rename /usr/local/urchin/data/geodata/.domain.uni to 
/usr/local/urchin/data/geodata/domain.uni: No such file or directory
mv: rename /usr/local/urchin/data/geodata/.domain.uns to 
/usr/local/urchin/data/geodata/domain.uns: No such file or directory
mv: rename /usr/local/urchin/data/geodata/.domain.local to 
/usr/local/urchin/data/geodata/domain.local: No such file or directory
./install.sh: /usr/local/urchin/util/uconf-driver: not found
chown: /usr/local/urchin/data: No such file or directory
chgrp: /usr/local/urchin/data: No such file or directory
## Error: Problems changing permissions on the distribution files
install  -o root -g wheel -m 444 /usr/local/urchin/util/urchin_daemons 
/usr/local/etc/rc.d/urchin5_daemons.sh-dist
install: /usr/local/urchin/util/urchin_daemons: No such file or 
directory
*** Error code 71

Stop in /usr/ports/www/urchin5.

but it looks like my box might be a bit wonky here as libc.so is on the 
box:

/usr/lib/libc.so

so there must be something in the environment set up for this. anyone 
seen this or experienced this problem?

ken;