Your trying to build a 32-bit OS and that is a 64-bit library. I'm assuming you're using an x86_64 platform. LFS is geared towards the ix86 platform. Try using Cross Linux from Scratch
which provides specific instructions for the x86_64 architecture. Use the multilib instructions, not the "pure-64" and save yourself some trouble down the road. I'd recommend using the SVN version, it should be the stable release in a few weeks anyway.