See http://code.google.com/p/waf/ for more information on waf

You can get a svn copy of the upstream source with:

  svn checkout http://waf.googlecode.com/svn/trunk/ waf-read-only

Samba currently uses waf 1.5, which can be found at:

  http://waf.googlecode.com/svn/branches/waf-1.5

To update the current copy of waf, use the update-waf.sh script in this
directory.