FreeBSD CURRENT Build breakage

Heads up, seems compiling a kernel as of tonights broken....

CC='cc ' mkdep -f .depend -a   -nostdinc -D_KERNEL -DKLD_MODULE
-DHAVE_KERNEL_OPTION_HEADERS -I. -I_at_ -I_at_/contrib/altq
-I/usr/obj/usr/src/sys/GENERIC -std=iso9899:1999
/usr/src/sys/modules/cpufreq/../../dev/cpufreq/ichss.c
/usr/src/sys/modules/cpufreq/../../x86/cpufreq/est.c
/usr/src/sys/modules/cpufreq/../../x86/cpufreq/hwpstate.c
/usr/src/sys/modules/cpufreq/../../x86/cpufreq/p4tcc.c
/usr/src/sys/modules/cpufreq/../../x86/cpufreq/powernow.c
===> crypto (depend)
_at_ -> /usr/src/sys
awk -f _at_/tools/makeobjops.awk _at_/opencrypto/cryptodev_if.m -c
make[4]: don't know how to make deflate.c. Stop

make[4]: stopped in /usr/src/sys/modules/crypto
*** Error code 2

Stop.