root@localhost:/usr/src/linux-headers-2.6.23-rc7-powerpc64-smp-custom# make modules modules_install
scripts/kconfig/conf -s arch/powerpc/Kconfig
  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
make[1]: *** No rule to make target `missing-syscalls'.  Stop.
make: *** [prepare0] Error 2