Install DevkitPPC: Instructions here.
For the purposes of this guide, we will assume you are using a debian-based distro with apt-get.
Install Boost Program Options: sudo apt-get install libboost-program-options-dev
Install ASSIMP: sudo apt-get install libassimp-dev
The easiest way to install dependencies with OS X is using Homebrew. We will assume this is what you are using.
Install Boost: brew install boost
Install ASSIMP: brew install assimp
From the project's root directory:
cd tools/obj2bin_src
make
cd ../..
make