Choose a target in the targets directory and cd to it.
Type make, this will build the target and all the dependencies.

Valid build targets for platforms in llvm-setup and llvm-setup/targets/<targetname>:

	clang-fetch
	clang-configure
	clang-build
	clang-sync
	clang-clean

	clangdev-fetch
	clangdev-configure
	clangdev-build
	clangdev-sync
	clangdev-clean

	clang-update-all

Valid build targets for platforms in llvm-setup/targets/<targetname>:

	kernel-fetch
	kernel-configure
	kernel-build
	kernel-devbuild
	kernel-sync
	kernel-clean

Valid build targets for platforms that support testing via QEMU:

	qemu-fetch
	qemu-configure
	qemu-build

	test

##############################################################################

The automation uses two passes to create a filter of the upstream patches
for those targets that are not synced to the tip. The filtered set of
patches are appied so it is easy to tell exactly what patches were made
and which did not apply.

The patches that do not apply are listed in the file
llvm-setup/targets/<targetname>/kernel-filter:

	F - log file used to create the following patch filter entries
	M - File is missing from the current code base
	R - Rejected hunk(s) from a patch

Patch files are also organized by common, arch specific, and platform specific.

Common patches are in common/*.patch
Arch specific patches are in common/<arch>/*.patch
Platform specific patches are in llvm-setup/targets/<targetname>/*.patch

Patches are further separated into those for unused return value warnings, general
warnings, and error fixes.

##############################################################################

The directory structure is as follows:

llvm-setup
|- common.mk       Top-level makefile include; included by all other Makfiles
|- arch            Architecture specific patches and scripts
|  |- all
|  |  |- all.mk    Common kernel make rules and defaults; included by common.mk
|  |  |- kernel    Mainline kernel git tree; git cloned by target builds
|  |  `- patches   clang kernel patches common to all architectures
|  |- arm
|  |  |- arm.mk    Arm kernel make rules and defaults; included by common.mk
|  |  |- bin       Scripts used by the arm architecture
|  |  |- patches   clang kernel patches for arm
|  |  `- toolchain Arm cross toolchain configuration, and download
|  |- mips
|  |  |- mips.mk   Arm kernel make rules and defaults; included by common.mk
|  |  |- bin       Scripts used by the mips architecture
|  |  |- patches   clang kernel patches for mips
|  |  `- toolchain MIPS cross toolchain configuration, and download
|  `- x86_64
|     |- x86_86.mk Arm kernel make rules and defaults; included by common.mk
|     |- bin       Scripts used by the x86_64 architecture
|     |- patches   clang kernel patches for x86_64
|  |  `- toolchain x86_64 cross toolchain configuration, and download
|- targets         Build targets; choose a target for which to build a kernel
|  |- msm          Target build for the MSM board
|  |- template     Template files which can be used to build a new target
|  |- vexpress     Target build for the QEMU vexpress arm target
|  `- x86_64       Target build for the x86_64 platform
|- test            Testing related code
|  |- test.mk      Common test make rules and defaults; included by common.mk
|  |- initramfs    Small initramfs built with toybox and dash
|  |- ltp          The Linux Test project (currently compiled for arm)
|  `- qemu         The QEMU machine emulator used to test clang built kernels
|- toolchain       All multi-platform toolchains under test
|  |- toolchain.mk Common toolchain make rules and defaults; included by common.mk
|  |- android  	   The android GCC toolchain (ARM and x86)
|  `- clang        The clang toolchain and LLVM
`- tools           General tools and scripts provided by the LLVMLinux project
   `- tools.mk     Common tool make rules and defaultsl included by common.mk