clang and 'config KERNFILE' error

laptop:root[227] uname -a
FreeBSD laptop 10.0-CURRENT FreeBSD 10.0-CURRENT #0 r230975M: Sat Feb  4 09:03:27 PST 2012     root_at_laptop:/usr/obj/usr/src/sys/MOBILE  i386


laptop:root[224] config MOBILE
Kernel build directory is ../compile/MOBILE
Don't forget to do ``make cleandepend && make depend''
laptop:root[225] cd ../compile/MOBILE
laptop:root[226] make cleandepend && make depend
"../../../conf/kern.pre.mk", line 87: Malformed conditional (${MK_CLANG_IS_CC} == "no" && ${CC:T:Mclang} != "clang")
"../../../conf/kern.pre.mk", line 98: if-less endif
"../../../conf/kern.pre.mk", line 104: Malformed conditional (${MK_CLANG_IS_CC} != "no" || ${CC:T:Mclang} == "clang")
"../../../conf/kern.pre.mk", line 106: if-less endif
"../../../conf/kern.mk", line 18: Malformed conditional (${MK_CLANG_IS_CC} != "no" || ${CC:T:Mclang} == "clang")
"../../../conf/kern.mk", line 31: if-less endif
"../../../conf/kern.mk", line 53: Malformed conditional (${MK_CLANG_IS_CC} == "no" && ${CC:T:Mclang} != "clang")
"../../../conf/kern.mk", line 60: if-less endif
make: fatal errors encountered -- cannot continue

-- 
Steve