I did not build the tools from git HEAD. Instead, I downloaded the packages
blackfin-toolchain-uclibc-default-2013R1-RC1.i386.tar.bz2
blackfin-toolchain-2013R1-RC1.i386.tar.bz2
... then unpacked and installed them. Perhaps you could try deleting your installed tools and then install the pre-built tools from those packages. There's no reason you shouldn't be able to build the tools from live sources, but I'm just trying to eliminate differences between our steps, since I'm having success with our custom BF516 platform.