Trying to upgrade lsof to 4.79C on FreeBSD 5.5-STABLE

[Clint Olsen]

...
...
(cd lib; make DEBUG="-O" CFGF="-pipe -DHASEFFNLINK=i_effnlink -DHASF_VNODE -DHASCPUMASK_T -DHASSBSTATE -DFREEBSDV=5050 -DHASFDESCFS=2 -DHASPSEUDOFS -DHASNULLFS -DHAS9660FS -DHASIPv6 -DLSOF_VSTR=\"5.5-STABLE\"")
cc  -pipe -DHASEFFNLINK=i_effnlink -DHASF_VNODE -DHASCPUMASK_T -DHASSBSTATE -DFREEBSDV=5050 -DHASFDESCFS=2 -DHASPSEUDOFS -DHASNULLFS -DHAS9660FS -DHASIPv6 -DLSOF_VSTR="5.5-STABLE" -I/usr/src/sys -O -c ckkv.c
In file included from ../dlsof.h:314,
                 from ../lsof.h:195,
                 from ckkv.c:43:
/usr/src/sys/fs/devfs/devfs.h:156: error: field `dm_lock' has incomplete type
*** Error code 1

Stop in /usr/ports/sysutils/lsof/work/lsof_4.79C.freebsd/lib.
*** Error code 1

Stop in /usr/ports/sysutils/lsof/work/lsof_4.79C.freebsd.
*** Error code 1

Stop in /usr/ports/sysutils/lsof.

FreeBSD belle.0lsen.net 5.5-STABLE FreeBSD 5.5-STABLE #1: Mon Oct 23 13:04:36 PDT 2006     root at belle.0lsen.net:/usr/obj/usr/src/sys/BELLE  i386

I'm assuming there's just a broken assumption on my dated version of
FreeBSD, but I thought I'd check.

Thanks,

-Clint