This happened to me, too. I was pulling my hair out trying to figure out what the problem was. I eventually got it working, but I can't remember for sure how. I THINK I remember, but it's possible that this solution could've been for a different problem I encountered and I'm just totally confused. So, the following advice comes with no warranties, expressed or implied:

At some point, I wound up running make with the -k switch to force it to continue past the error. After it finished, I ran make again WITHOUT the -k, and everything was fine. Something later in the process apparently fixed the problem. Never had to fool with it again.

Like I said - I may be misremembering - so this may be of no help whatsoever.

Also - I noticed it mentioned 'unknown host' in the error - you may want to doublecheck that your hosts file includes your hostname as an alias of localhost.

Hope this helps...

Bill

Bill B.
Mk.2 SN 080000183 - 38 GB / Green