QNX SDK - where is it on the Nuterino partition install?

Hi -

I installed QNX both under MS Windows and also on a Neutrino partition. It
si QNX version 6.2.1.A PE. A directory under MS Windows is
c:\QNXsdk\target\qnx6\usr\src\bsp-6.2.1\build\

Where is this directory when the installation is done under Neutrino? There
is no build subdirectory under directory structure /usr/src/bsp-6.2.1/.

regards.
james