trouble building with clang, doxygen file missing

I'm attempting to build 3.3 with clang included (by checking out clang
branches/release_33 to the tools/clang directory). When I run configure
I get this error:

config.status: creating docs/doxygen.cfg
config.status: error: cannot find input file:

Even if I "--enable-doxygen=no --enable-docs=no" I still get this error.
Attempting to remove the clang "docs" directory also doesn't help,
something is still looking for it.

Nevermind, I somehow had the wrong SVN URL and was checking out the
wrong things.