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Up to [Apple XNU] / XNU

xnu-68.4-1.1

How to build XNU:

1. Install Beaker build environment:

 Install the DeveloperLibs, DeveloperTools, Local, and LocalLibs 
 packages onto a Hera system from:

  /Net/osbuild/release/<latest Beaker>/System/Installation/Packages

IMPORTANT!!!!

	CHANGE THE DEFAULT INSTALL DIRECTORY TO /Local/Public/MacOSX

IF YOU DON'T DO THIS, YOU WILL NEED TO REINSTALL YOUR HERA SYSTEM!

When installing directly on Beaker, you do not need to do this.

2. Build Setup:

2.a. Setup your environment:

  Create and go  to your sandbox directory </sandbox/my_xnu>

  $ cd </sandbox/my_xnu>

  Extract the xnu project from cvs:

  $ cvs co -r<xnu-tag> xnu

  where <xnu-tag> must be replaced by the matching xnu tag for
  the xnu project level.

  Go to the top directory in your XNU project.

  $ cd </sandbox/my_xnu>/xnu

  If you are running with sh, run the following command:
    $ . SETUP/setup.sh

  If you are running with csh, run the following command:
    % source SETUP/setup.csh

  This will define  NEXT_ROOT , DSTROOT, OBJROOT, SRCROOT, SYMROOT.

2.b. Populate OBJROOT (Optional):

  Create a symlink in the root of your development and debug machines as 
  follows:

  $ su
  # ln -s /Network/Servers/humpty/Prebuilt /Prebuilt

  $ ./SETUP/seed_objroot <xnu-tag> [RELEASE,DEBUG]_[PPC,I366]

or

  $ ./SETUP/seed_objroot <xnu-tag>

  seed_objroot populates the OBJROOT with a prebuilt OBJROOT. The 
  second argument specifies the configuration (RELEASE_PPC, DEBUG_PPC, etc).
  If no configuration is specified, all the configurations will
  be populated.

  You can also use it to duplicate an OBJROOT by setting PREBUILT_OBJROOT 
  in your shell environment with your own OBJROOT reference (xnu-tag is
  ignored then).

3. Export the Component Header Files

  From the top directory, run:

  $ make exporthdrs

  This exports the component header files in the $OBJROOT/EXPORT_HDRS 
  directory.

4. Build all the Components

  From the top directory. run:

  $ make all

  This builds all the components for all architectures defined in 
  ARCH_CONFIGS and for all kernel configurations defined in KERNEL_CONFIGS.
  By default, ARCH_CONFIGS contains one architecture, the build machine 
  architecture, and KERNEL_CONFIGS is set to build for RELEASE.
  This will also create a bootable image, mach_kernel,  and a kernel binary 
  with symbols, mach_kernel.sys.

  Example:
    $(OBJROOT)/RELEASE_PPC/osfmk/RELEASE/osfmk.o: pre-linked object for osfmk component
    $(OBJROOT)/RELEASE_PPC/mach_kernel: bootable image

5. Building a Component

  From a component top directory:

    $make all

  This builds a component for all architectures defined in ARCH_CONFIGS 
  and for all kernel configurations defined in KERNEL_CONFIGS. 
  By default, ARCH_CONFIGS contains one architecture, the build machine 
  architecture, and KERNEL_CONFIGS is set to build for RELEASE .

  WARNING: If a component header file has been modified, you will have to do 
           the above procedures 3 and 4.

  Example:
    $(OBJROOT)/RELEASE_PPC/osfmk/RELEASE/osfmk.o: pre-linked object for osfmk component

  From the component top directory:

    $make mach_kernel

  This includes your component in the bootable image, mach_kernel,  and 
  in the kernel binary with symbols, mach_kernel.sys.

6. Building DEBUG

  Define KERNEL_CONFIGS to DEBUG in your environment or when running a 
  make command.  Then, apply procedures 4, 5

  $ make KERNEL_CONFIGS=DEBUG all

  or

  $ export KERNEL_CONFIGS=DEBUG
  $ make all

  Example:
    $(OBJROOT)/DEBUG_PPC/osfmk/DEBUG/osfmk.o: pre-linked object for osfmk component
    $(OBJROOT)/DEBUG_PPC/mach_kernel: bootable image

6. Building fat

  Define ARCH_CONFIGS in your environment or when running a make command.
  Apply procedures 3, 4, 5

  $ make ARCH_CONFIGS="PPC I386" exporthdrs all

  or

  $ export ARCH_CONFIGS="PPC I386"
  $ make exporthdrs all

  Optionally you may do the following and your NEXTROOT will be set to
    /Local/Public/MacOSX automaticly.

    $ ~rc/bin/buildit . -arch ppc -arch i386 -noinstallsrc -nosum \
			-release Beaker

7. Build check before integration

  Set NEXT_ROOT to /Local/Public/MacOSX (Default path for Mac OS X SDK)

  From the top directory, run:

    $ ~rc/bin/buildit . -arch ppc -arch i386 -noinstallsrc -nosum

8. Creating tags and cscope

  Set up your build environment as per instructions in 2.a

  From the top directory, run:

    $ make tags		# this will build ctags and etags

    $ make cscope	# this will build cscope database

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