latest git: compile error: arch/powerpc/kernel/built-in.o

LD .tmp_vmlinux1
arch/powerpc/kernel/built-in.o: In function `__restore_cpu_setup':
(.text+0xcd34): undefined reference to kexec_sr_activated' arch/powerpc/kernel/built-in.o: In function __restore_cpu_setup':

(.text+0xcd44): undefined reference to crash_kexec_secondary' arch/powerpc/kernel/built-in.o: In function early_init_devtree':
(.init.text+0x1cdc): undefined reference to reserve_crashkernel' arch/powerpc/kernel/built-in.o: In function early_init_devtree':
(.init.text+0x1e1c): undefined reference to `overlaps_crashkernel' make[1]: *** [.tmp_vmlinux1] Error 1
make[1]: Leaving directory `/home/shorty/kernel-factory/git.08102006/linux-2.6'
make: *** [debian/stamp-build-kernel] Error 2