buildworld failing on libalias, amd64, RELENG_6

[Richard Schilling]

Still having problems running make buildworld.  It crashes when trying 
to build libalias.

Any information how libalias is generated and built would be helpful.

There are no files at all in the directory /usr/src/lib/libalias.  Not 
sure why they aren't generated.

uname -a output:
FreeBSD newbox.cognitiongroup.biz 6.0-STABLE FreeBSD 6.0-STABLE #3: Fri 
Nov  4 23:36:56 PST 2005 
rschilling at newbox.cognitiongroup.biz:/usr/obj/usr/src/sys/PRODUCTION  amd64


Here's the error
===> lib/libalias (all)
make: don't know how to make /usr/src/lib/libalias/alias.c. Stop
*** Error code 2

Stop in /usr/src/lib.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.