And if nothing else works, I would delete the udev build directory and do it again. Untar both tarballs again as described. Then copy and paste the commands; especially that large block of commands (copy and paste it all-at-once). That particular page in the book is sort of a busy one; easy to botch. I just finished a new 7.1 system and, unlike the 7.0 book which had a few errata, this one was smooth sailing straight through including that udev page you're stuck on. I had to do nothing special to get past that.
Last edited by stoat; 04-23-2012 at 08:52 AM.