Building xnu for OS X 10.9 Mavericks

The OS X kernel source (xnu) has been released for OS X 10.9 Mavericks: here

Building xnu requires Xcode and some additional open-source (but not pre-installed) dependencies. You can build xnu manually by doing:

1. Install OS X Mavericks and Xcode 5.0.1, make sure the Xcode license has been agreed-to with "sudo xcodebuild -license"
2. Download the source for the dtrace and AvailabilityVersions projects, which are required dependencies, as well as xnu itself
   

   $ curl -O http://opensource.apple.com/tarballs/dtrace/dtrace-118.tar.gz
   $ curl -O http://opensource.apple.com/tarballs/AvailabilityVersions/AvailabilityVersions-6.tar.gz
   $ curl -O http://opensource.apple.com/tarballs/xnu/xnu-2422.1.72.tar.gz

3. Build and install CTF tools from dtrace
   

   $ tar zxf dtrace-118.tar.gz
   $ cd dtrace-118
   $ mkdir -p obj sym dst
   $ xcodebuild install -target ctfconvert -target ctfdump -target ctfmerge ARCHS="x86_64" SRCROOT=$PWD OBJROOT=$PWD/obj SYMROOT=$PWD/sym DSTROOT=$PWD/dst
   ...
   $ sudo ditto $PWD/dst/usr/local /usr/local
   Password:
   $ cd ..
   

4. Install AvailabilityVersions
   

   $ tar zxf AvailabilityVersions-6.tar.gz
   $ cd AvailabilityVersions-6
   $ mkdir -p dst
   $ make install SRCROOT=$PWD DSTROOT=$PWD/dst
   $ sudo ditto $PWD/dst/usr/local `xcrun -sdk / -show-sdk-path`/usr/local
   $ cd ..
   

5. Build xnu
   

   $ tar zxf xnu-2422.1.72.tar.gz
   $ cd xnu-2422.1.72
   $ make ARCH_CONFIGS=X86_64 KERNEL_CONFIGS=RELEASE