[beagleboard] Help building Angstrom for BeagleBone

You need to install some support programs before the build can start.
Try following the instructions that are there in the log.

ERROR: OE-core'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 install following missing utilities: diffstat,texi2html,makeinfo,chrpath

Get that list of tools installed and try the build again.