I am running Mac OS X 10.5.8 on a PowerPC G4. I have previously built  
Emacs 23.1 from source [1] and installed it in /Applications/Emacs.app

I tried to build Emacs.app from the CVS head following the recipe on  
the Emacs Wiki [2] using the --with-ns argument to configure, but this  
failed at the "make bootstrap" stage with the following error:

Compiling /Users/gdr/emacs-cvs/emacs/lisp/url/url-dav.el

In toplevel form:
url/url-dav.el:36:1:Error: Cannot open doc string file "/Applications/ 
Emacs.app/Contents/Resources/etc/DOC-23.1.50.1"
make[2]: *** [/Users/gdr/emacs-cvs/emacs/lisp/url/url-dav.elc] Error 1
make[1]: *** [lisp] Error 2
make: *** [bootstrap] Error 2

I have attached the entire CVS checkout, configure and build log to  
this message.

-- 
Gareth Rees

[1] http://ftp.gnu.org/pub/gnu/emacs/emacs-23.1.tar.gz
[2] http://www.emacswiki.org/emacs/EmacsFromCVS