bsd.README fails in kernel build

[Randy Bush]

very very fresh cvsup, i386

awk -f /usr/src/sys/modules/mem/../../conf/kmod_syms.awk mem.kld
export_syms | xargs -J% objcopy % mem.kld
ld -Bshareable  -d -warn-common -o mem.ko.debug mem.kld
objcopy --only-keep-debug mem.ko.debug mem.ko.symbols
objcopy --strip-debug --add-gnu-debuglink=mem.ko.symbols mem.ko.debug mem.ko
===> mfi (all)
make: don't know how to make bsd.README. Stop
*** Error code 2