Hello, I have recently been playing with darwinbuild in order to build the opensource components of os x for myself. I started with 9G55 and built the code using the instructions athttp://www.puredarwin.org/developers/darwinbuild . First I downloaded all the roots and then I attempted to build all the projects using 'the brutus way' and this seemed to work for most packages. However when trying this same process out on 9J61, I end up using 71GB of diskspace before running out. Does this seem right? Is there a way of reducing the footprint? By the way http://www.puredarwin.org/developers/darwinbuild has a small typo in the command for X in $(darwinxref version '*' | cut -f 1 -d '-'); do; darwinbuild $X; done Should have a ; removed and read for X in $(darwinxref version '*' | cut -f 1 -d '-'); do darwinbuild $X; done Thanks Chris Gorman