OS X Intel is very much a 64-bit only club now, especially with 10.9 being a free upgrade to anyone all the way back.
Let me be very clear before anyone else hurts something trying to be clever: current SVN does not build on Windows official tools. It does not build on Linux GCC. It does not build on Windows MSVC. It does not build on Clang on either Linux or OS X. It does not build on GCC on OS X. You cannot build it in your house. You cannot build it by clicking your mouse. It's not just you, it's really broken.
