[Pharo-users] Building 64-bit pharo VM

Hello, I am working on building a 64-bit pharo vm to open large files, as per a previous question to the list. I have gone down a few roads from different dates and with different basic strategies and met with little success so far. Could someone recommend the best place to look for the vm build instructions that would be the closest fit to building a current pharo vm for pharo4 in 64 bits on a 64 bit arch linux os? Thanks, Evan