Nick, I'm afraid I never got around to installing Xcode in Tiger (just use a couple of things, and I grabbed just those rather than installing the whole thing) so afraid I can't help you sort it out. Rafe might be able to, or you can try posting in the UNIX forum:
http://discussions.apple.com/forum.jspa?forumID=735
But it looks to me like the easiest thing would be to grab those pre-compiled binaries the site mentioned. Subversion is here:
http://www.codingmonkeys.de/mbo/articles/2006/11/08/subversion-1-4-2
and here:
http://metissian.com/projects/macosx/subversion/
Good luck.
Francine
Francine
Schwieder