[poky] current master tree build failed.

[Kang Kai]

Hi,

I pull the master tree and HEAD is 
fab742bd4693ed3092690a20dd32d53fe27c3d4c. When I run bitbake, I got the 
error message:

ERROR:  Poky's config sanity checker detected a potential misconfiguration.
     Either fix the cause of this error or at your own risk disable the 
checker (see sanity.conf).
     Following is the list of potential problems / advisories:

     Please set TARGET_OS directly, or choose a MACHINE or DISTRO that 
does so.
DISTRO 'poky' not found. Please set a valid DISTRO in your local.conf

What can I  do to remove this? Thanks.

Regards,
Kang Kai