(usagi-users 03632) build problems

I am trying to build the utilities (ip etc) from the
usagi-linux26-stable-20050714 release. I do the following:
./configure --enable-ip --enable-libs
   (which appears to run alright)
make
  which gets the following error:
gi/usagi/ip'
gcc -D_USAGI -DRESOLVE_HOSTNAME -DCONFIG_USE_POLICY_FWD -I. -Ilib 
-I../libnetlink -I../include -I../libinet6/include -g -O2   -c -o ip.o ip.c
In file included from /usr/include/sys/socket.h:35,
                  from ip.c:22:
../libinet6/include/bits/socket.h:265: error: syntax error before '{' token
../libinet6/include/bits/socket.h:274: error: invalid type argument of `->'
../libinet6/include/bits/socket.h:275: error: syntax error before "if"
make[1]: *** [ip.o] Error 1
make[1]: Leaving directory `/usr/src/usagi/usagi/ip'
make: *** [apps] Error 2

Is there something I am doing wrong? Do I not understand the procedure
for doing this?

Also is there a way to compile all these tools/utilities at one time?

BTW The kernel compiled fine and appears to be working.

Thanks for any help!
Warren Steffen