Rebuilding the WPILib?

[basicxman]

So I'd like to keep my own development copy of the C++ WPILib, but I'm having some trouble getting it to build as a project in WindRiver. I gather the following needs to be done

1) Download source (done)
2) Import into WindRiver (done)
3) Build...?
4) Run the update script in %root%/Scripts

When I attempt to build the project, nothing happens.
When I attempt to open a workbench shell and use `make` to build the project, no errors occur but nothing happens.

At this point I'm tempted to just make my own Rakefile (ruby version of make) that uses the ccppc compiler and linked, but I'm wondering what the 'correct' way of building the WPI library is.