Trouble building world from r195708

After successfully replacing the video daughterboard for my laptop, I've
resumed daily builds of stable/6, stable/7, and head (after a 36-day
hiatus) on each of my laptop and a dual-CPU build machine.

My most recent successful build of head (in each case) was Wednesday:

freebeast(8.0)[3] uname -a
FreeBSD freebeast.catwhisker.org 8.0-BETA1 FreeBSD 8.0-BETA1 #371 r195708: Wed Jul 15 13:26:22 PDT 2009     root_at_freebeast.catwhisker.org:/common/S4/obj/usr/src/sys/FREEBEAST  i386
freebeast(8.0)[4] 

Yesterday, I updated sources to r195716 and encountered a problem
in stage 1.2: bootstrap tools; today, I updated sources to r195737, and
the problem persists.  Here's an excerpt from the typescript file (cut/
pasted):

freebeast(8.0)[13] dirs
/usr/src 
freebeast(8.0)[14] uname -a
FreeBSD freebeast.catwhisker.org 8.0-BETA1 FreeBSD 8.0-BETA1 #371 r195708: Wed Jul 15 13:26:22 PDT 2009     root_at_freebeast.catwhisker.org:/common/S4/obj/usr/src/sys/FREEBEAST  i386
freebeast(8.0)[15] make buildworld
--------------------------------------------------------------
>>> World build started on Fri Jul 17 09:01:23 PDT 2009
--------------------------------------------------------------

--------------------------------------------------------------
>>> Rebuilding the temporary build tree
--------------------------------------------------------------
rm -rf /usr/obj/usr/src/tmp
mkdir -p /usr/obj/usr/src/tmp/lib
...
c++ -O2 -pipe -I/usr/obj/usr/src/tmp/legacy/usr/include -I/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/lib -I/usr/src/gnu/usr.bin/gperf  -static -L/usr/obj/usr/src/tmp/legacy/usr/lib -o gperf bool-array.o gen-perf.o hash-table.o iterator.o key-list.o list-node.o main.o new.o options.o read-line.o trace.o vectors.o version.o hash.o -legacy
/usr/lib/libgcc_eh.a(unwind-dw2.o)(.text+0x98e): In function `.L140':
: undefined reference to `__stack_chk_fail_local'
/usr/lib/libgcc_eh.a(unwind-dw2.o)(.text+0xddc): In function `__frame_state_for':
: undefined reference to `__stack_chk_fail_local'
/usr/lib/libgcc_eh.a(unwind-dw2.o)(.text+0x1706): In function `.L399':
: undefined reference to `__stack_chk_fail_local'
/usr/lib/libgcc_eh.a(unwind-dw2.o)(.text+0x1ba5): In function `_Unwind_Backtrace':
: undefined reference to `__stack_chk_fail_local'
/usr/lib/libgcc_eh.a(unwind-dw2.o)(.text+0x1e0d): In function `_Unwind_RaiseException':
: undefined reference to `__stack_chk_fail_local'
/usr/lib/libgcc_eh.a(unwind-dw2.o)(.text+0x1fe1): more undefined references to `__stack_chk_fail_local' follow
*** Error code 1

Stop in /usr/src/gnu/usr.bin/gperf.
*** Error code 1

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

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

Stop in /usr/src.
freebeast(8.0)[16] 

The laptop & build machine fail in the same way.  (The similarity
ought not be too surprising, as the laptop's repository is a mirror
of the build machine's.)

On the build machine, I've tried a couple of evasive maneuvers (to no
avail):  I've run "make cleandepends" and "make clean"; I also tried

	pushd lib/libc && make && make install; popd

and while there were no complaints from any of those activities, none
of them seemed to help, either.

Any suggestions for helping me get past this so I can do some reality
checks on 8.0-BETA2?

(I do have readily-available stable/7 (and stable/6, for that matter)
worlds from the same machines (different slices), if that might help.)

Thanks.

Peace,
david
-- 
David H. Wolfskill				david_at_catwhisker.org
Depriving a girl or boy of an opportunity for education is evil.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.