Is it possible to build a 64 bit version of pd vanilla for osx 10.7 (x86_64 plus i386) that will run 64 bit and/or 32 bit externals?

I tried ./configure --enable-universal, which creates the makefiles, but the build fails with:

llvm-gcc-4.2: -E, -S, -save-temps and -M options are not allowed with multiple -arch flags

Nick