Hi all, I have downloaded DarwinBuild with the intention to use it to build my own copy of the 10.6 kernel. I believe this will help me to be more effective at debugging my own driver and user-client code. I am experiencing a problem getting started. I downloaded and installed DarwinBuild (after first downloading and installing MacPorts). I did fine (as far as I could tell) until I got to the point of actually trying to build a kernel. DarwinBuild is installed in /opt/local/bin/. I prepared /root/xnu/ to be my build directory as shown: MacBook-Pro:xnu root# ls .build BuildRoot Headers Logs Roots Sources Symbols I moved the kernel sources that I had downloaded previously from http://www.opensource.apple.com/ to a directory under the Sources directory as shown: MacBook-Pro:xnu root# ls sources xnu-1504.9.26 When I tried to start the build, the following occurred: MacBook-Pro:xnu root# /opt/local/bin/darwinbuild xnu *** Attaching build root disk image ... /dev/disk1 GUID_partition_scheme /dev/disk1s1 EFI /dev/disk1s2 Apple_HFS /Volumes/BuildRoot_xnu_20110504142913 ERROR: project not found: xnu Would somebody please tell me what I've done wrong? Thanks. David Lee