undefined reference on xfstools

[Mike Brancato <funnyguy@xxxxxxxxxxxxxxxxxxxx>]

/usr/src/linux-2.4-xfs/cmd/xfsprogs/repair/xfs_repair.c:287: undefined
reference to `va_start'

i've tried patching 2.4.1 with both the patches from Feb 6th, and chcking
out the linux-2.4-xfs tree.  all produce an undefined reference to
"va_start" and "va_end" in some files.

this is a debian unstable/sid machine.  any clues?  i've been back and
forth ont he project site, can't find it.  toss me a URL if you can.

mike