and if i try to follow http://wiki.freebsd.org/BuildingFreeBSDWithClang i do not see where the clang world and kernel are actually made the normal bootable. is the clang build for releng_9 for amd64 in good enough shape that i can simply csup hack make.conf make buildworld make kernel boot single make installworld mergemaster -cviFU reboot as if life was normal? randy