How to build pyobjc from src

I am trying to build pyobjc from src, so I c开发者_StackOverflowhecked out http://svn.red-bean.com/pyobjc/trunk

but I have no clue after that what I do to build it, I do not see any make or setup files?

Edit 1: I tried setup.py in trunk/pyobjc/pyobjc folder but it tries to download all the required modules which seem to be already in trunk/pyobjc e.g. it says (if I switch off my internet)

No local packages or download links found for pyobjc-framework-XgridFoundation==2.3b1

but trunk/pyobjc has pyobjc-framework-XgridFoundation

Sorry. The documentation in the http://svn.red-bean.com/pyobjc/trunk/pyobjc/pyobjc-core/Install.txt explains the process