Unable to build kernel after csup yesterday

After updating sources yesterday and deleting everything in
/usr/obj/usr/src, buildkernel no longer builds. Sources from Friday
afternoon (US/Pacific) did build OK.

I get:
cc -c -O -pipe  -std=c99 -g -Wall -Wredundant-decls -Wnested-externs 
-Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual 
 -Wundef -Wno-pointer-sign -fformat-extensions -nostdinc  -I. -I/usr/src/sys 
-I/usr/src/sys/contrib/altq -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include 
opt_global.h -fno-common -finline-limit=8000 --param inline-unit-growth=100 
--param large-function-growth=1000  -mno-align-long-strings 
-mpreferred-stack-boundary=2  -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 
-ffreestanding -Werror  /usr/src/sys/i386/i386/sys_machdep.c
/usr/src/sys/i386/i386/sys_machdep.c: In function 'i386_ldt_grow':
/usr/src/sys/i386/i386/sys_machdep.c:697: error: 'NULL_LDT_BASE' undeclared 
(first use in this function)
/usr/src/sys/i386/i386/sys_machdep.c:697: error: (Each undeclared identifier 
is reported only once
/usr/src/sys/i386/i386/sys_machdep.c:697: error: for each function it appears 
in.)
cc1: warnings being treated as errors
/usr/src/sys/i386/i386/sys_machdep.c:751: warning: passing argument 1 of 
'set_user_ldt' from incompatible pointer type
*** Error code 1

I don't see anything relevant in UPDATING. I am attaching my config and
hopefully it will make it through the filters.

Any idea what the problem might be? I did see a number of updates to
this area recently.
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman_at_es.net			Phone: +1 510 486-8634
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