Here is where my buildworld of 6.2-R fails:
=== sbin/ip6fw (obj)
/usr/obj/usr/src/sbin/ip6fw created for /usr/src/sbin/ip6fw
=== sbin/ipf (obj)
=== sbin/ipf/libipf (obj)
/usr/obj/usr/src/sbin/ipf/libipf created for /usr/src/sbin/ipf/libipf
=== sbin/ipf/ipf (obj)
mkdir: /usr/obj/usr/src
/libipf === sbin/ipf/ipf (obj)
mkdir: /usr/obj/usr/src/sbin/ipf/ipf: File exists
*** Error code 1
Stop in /usr/src/sbin/ipf/ipf.
*** Error code 1
Stop in /usr/src/sbin/ipf.
*** Error code 1
Stop in /usr/src/sbin.
*** Error code 1
Stop in /usr/src.
*** Error code 1
I've checked
(obj)
/usr/obj/usr/src/sbin/ipf/libipf created for
/usr/src/sbin/ipf/libipf === sbin/ipf/ipf (obj)
mkdir: /usr/obj/usr/src/sbin/ipf/ipf: File exists
*** Error code 1
Stop in /usr/src/sbin/ipf/ipf.
*** Error code 1
Stop in /usr/src/sbin/ipf.
*** Error code 1
Stop in /usr/src/sbin
/obj/usr/src/sbin/ipf/libipf created for
/usr/src/sbin/ipf/libipf === sbin/ipf/ipf (obj)
mkdir: /usr/obj/usr/src/sbin/ipf/ipf: File exists
*** Error code 1
Stop in /usr/src/sbin/ipf/ipf.
*** Error code 1
Stop in /usr/src/sbin/ipf.
*** Error code 1
Stop in /usr/src/sbin.
*** Error code 1
for /usr/src/sbin/ip6fw
=== sbin/ipf (obj)
=== sbin/ipf/libipf (obj)
/usr/obj/usr/src/sbin/ipf/libipf created for
/usr/src/sbin/ipf/libipf === sbin/ipf/ipf (obj)
mkdir: /usr/obj/usr/src/sbin/ipf/ipf: File exists
*** Error code 1
Stop in /usr/src/sbin/ipf/ipf.
*** Error code 1
Stop