VERSION = 2

PATCHLEVEL = 6

SUBLEVEL = 37

EXTRAVERSION = -rc1

NAME = Flesh-Eating Bats with Fangs

# *DOCUMENTATION*

# To see a list of typical targets execute "make help"

# More info can be located in ./README

# Comments in this file are targeted only to the developer, do not

# expect to learn how to build the kernel reading this file.

# Do not:

# o  use make's built-in rules and variables

#    (this increases performance and avoids hard-to-debug behaviour);

# o  print "Entering directory ...";

MAKEFLAGS += -rR --no-print-directory

# Avoid funny character set dependencies

unexport LC_ALL

LC_COLLATE=C

LC_NUMERIC=C

export LC_COLLATE LC_NUMERIC

# We are using a recursive build, so we need to do a little thinking

# to get the ordering right.

#

# Most importantly: sub-Makefiles should only ever modify files in

# their own directory. If in some directory we have a dependency on

# a file in another dir (which doesn't happen often, but it's often

# unavoidable when linking the built-in.o targets which finally

# turn into vmlinux), we will call a sub make in that other dir, and

# after that we are sure that everything which is in that other dir

# is now up to date.

#

# The only cases where we need to modify files which have global

# effects are thus separated out and done before the recursive

# descending is started. They are now explicitly listed as the

# prepare rule.

# To put more focus on warnings, be less verbose as default

# Use 'make V=1' to see the full commands

ifeq ("$(origin V)", "command line")

  KBUILD_VERBOSE = $(V)

endif

ifndef KBUILD_VERBOSE

  KBUILD_VERBOSE = 0

endif

# Call a source code checker (by default, "sparse") as part of the

# C compilation.

#

# Use 'make C=1' to enable checking of only re-compiled files.

# Use 'make C=2' to enable checking of *all* source files, regardless

# of whether they are re-compiled or not.

#

# See the file "Documentation/sparse.txt" for more details, including

# where to get the "sparse" utility.

ifeq ("$(origin C)", "command line")

  KBUILD_CHECKSRC = $(C)

endif

ifndef KBUILD_CHECKSRC

  KBUILD_CHECKSRC = 0

endif

# Use make M=dir to specify directory of external module to build

# Old syntax make ... SUBDIRS=$PWD is still supported

# Setting the environment variable KBUILD_EXTMOD take precedence

ifdef SUBDIRS

  KBUILD_EXTMOD ?= $(SUBDIRS)

endif

ifeq ("$(origin M)", "command line")

  KBUILD_EXTMOD := $(M)

endif

# kbuild supports saving output files in a separate directory.

# To locate output files in a separate directory two syntaxes are supported.

# In both cases the working directory must be the root of the kernel src.

# 1) O=

# Use "make O=dir/to/store/output/files/"

#

# 2) Set KBUILD_OUTPUT

# Set the environment variable KBUILD_OUTPUT to point to the directory

# where the output files shall be placed.

# export KBUILD_OUTPUT=dir/to/store/output/files/

# make

#

# The O= assignment takes precedence over the KBUILD_OUTPUT environment

# variable.

# KBUILD_SRC is set on invocation of make in OBJ directory

# KBUILD_SRC is not intended to be used by the regular user (for now)

ifeq ($(KBUILD_SRC),)

# OK, Make called in directory where kernel src resides

# Do we want to locate output files in a separate directory?

ifeq ("$(origin O)", "command line")

  KBUILD_OUTPUT := $(O)

endif

# That's our default target when none is given on the command line

PHONY := _all

_all:

# Cancel implicit rules on top Makefile

$(CURDIR)/Makefile Makefile: ;

ifneq ($(KBUILD_OUTPUT),)

# Invoke a second make in the output directory, passing relevant variables

# check that the output directory actually exists

saved-output := $(KBUILD_OUTPUT)

KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)

$(if $(KBUILD_OUTPUT),, \

     $(error output directory "$(saved-output)" does not exist))

PHONY += $(MAKECMDGOALS) sub-make

$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make

	$(Q)@:

sub-make: FORCE

	$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \

	KBUILD_SRC=$(CURDIR) \

	KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \

	$(filter-out _all sub-make,$(MAKECMDGOALS))

# Leave processing to above invocation of make

skip-makefile := 1

endif # ifneq ($(KBUILD_OUTPUT),)

endif # ifeq ($(KBUILD_SRC),)

# We process the rest of the Makefile if this is the final invocation of make

ifeq ($(skip-makefile),)

# If building an external module we do not care about the all: rule

# but instead _all depend on modules

PHONY += all

ifeq ($(KBUILD_EXTMOD),)

_all: all

else

_all: modules

endif

srctree		:= $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))

objtree		:= $(CURDIR)

src		:= $(srctree)

obj		:= $(objtree)

VPATH		:= $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))

export srctree objtree VPATH

# SUBARCH tells the usermode build what the underlying arch is.  That is set

# first, and if a usermode build is happening, the "ARCH=um" on the command

# line overrides the setting of ARCH below.  If a native build is happening,

# then ARCH is assigned, getting whatever value it gets normally, and 

# SUBARCH is subsequently ignored.

SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \

				  -e s/arm.*/arm/ -e s/sa110/arm/ \

				  -e s/s390x/s390/ -e s/parisc64/parisc/ \

				  -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \

				  -e s/sh[234].*/sh/ )

# Cross compiling and selecting different set of gcc/bin-utils

# ---------------------------------------------------------------------------

#

# When performing cross compilation for other architectures ARCH shall be set

# to the target architecture. (See arch/* for the possibilities).

# ARCH can be set during invocation of make:

# make ARCH=ia64

# Another way is to have ARCH set in the environment.

# The default ARCH is the host where make is executed.

# CROSS_COMPILE specify the prefix used for all executables used

# during compilation. Only gcc and related bin-utils executables

# are prefixed with $(CROSS_COMPILE).

# CROSS_COMPILE can be set on the command line

# make CROSS_COMPILE=ia64-linux-

# Alternatively CROSS_COMPILE can be set in the environment.

# A third alternative is to store a setting in .config so that plain

# "make" in the configured kernel build directory always uses that.

# Default value for CROSS_COMPILE is not to prefix executables

# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile

export KBUILD_BUILDHOST := $(SUBARCH)

ARCH		?= $(SUBARCH)

CROSS_COMPILE	?= $(CONFIG_CROSS_COMPILE:"%"=%)

# Architecture as present in compile.h

UTS_MACHINE 	:= $(ARCH)

SRCARCH 	:= $(ARCH)

# Additional ARCH settings for x86

ifeq ($(ARCH),i386)

        SRCARCH := x86

endif

ifeq ($(ARCH),x86_64)

        SRCARCH := x86

endif

# Additional ARCH settings for sparc

ifeq ($(ARCH),sparc32)

       SRCARCH := sparc

endif

ifeq ($(ARCH),sparc64)

       SRCARCH := sparc

endif

# Additional ARCH settings for sh

ifeq ($(ARCH),sh64)

       SRCARCH := sh

endif

# Where to locate arch specific headers

hdr-arch  := $(SRCARCH)

ifeq ($(ARCH),m68knommu)

       hdr-arch  := m68k

endif

KCONFIG_CONFIG	?= .config

# SHELL used by kbuild

CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \

	  else if [ -x /bin/bash ]; then echo /bin/bash; \

	  else echo sh; fi ; fi)

HOSTCC       = gcc

HOSTCXX      = g++

HOSTCFLAGS   = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer

HOSTCXXFLAGS = -O2

# Decide whether to build built-in, modular, or both.

# Normally, just do built-in.

KBUILD_MODULES :=

KBUILD_BUILTIN := 1

#	If we have only "make modules", don't compile built-in objects.

#	When we're building modules with modversions, we need to consider

#	the built-in objects during the descend as well, in order to

#	make sure the checksums are up to date before we record them.

ifeq ($(MAKECMDGOALS),modules)

  KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)

endif

#	If we have "make <whatever> modules", compile modules

#	in addition to whatever we do anyway.

#	Just "make" or "make all" shall build modules as well

ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)

  KBUILD_MODULES := 1

endif

ifeq ($(MAKECMDGOALS),)

  KBUILD_MODULES := 1

endif

export KBUILD_MODULES KBUILD_BUILTIN

export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD

# Beautify output

# ---------------------------------------------------------------------------

#

# Normally, we echo the whole command before executing it. By making

# that echo $($(quiet)$(cmd)), we now have the possibility to set

# $(quiet) to choose other forms of output instead, e.g.

#

#         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@

#         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<

#

# If $(quiet) is empty, the whole command will be printed.

# If it is set to "quiet_", only the short version will be printed. 

# If it is set to "silent_", nothing will be printed at all, since

# the variable $(silent_cmd_cc_o_c) doesn't exist.

#

# A simple variant is to prefix commands with $(Q) - that's useful

# for commands that shall be hidden in non-verbose mode.

#

#	$(Q)ln $@ :<

#

# If KBUILD_VERBOSE equals 0 then the above command will be hidden.

# If KBUILD_VERBOSE equals 1 then the above command is displayed.

ifeq ($(KBUILD_VERBOSE),1)

  quiet =

  Q =

else

  quiet=quiet_

  Q = @

endif

# If the user is running make -s (silent mode), suppress echoing of

# commands

ifneq ($(findstring s,$(MAKEFLAGS)),)

  quiet=silent_

endif

export quiet Q KBUILD_VERBOSE

# Look for make include files relative to root of kernel src

MAKEFLAGS += --include-dir=$(srctree)

# We need some generic definitions (do not try to remake the file).

$(srctree)/scripts/Kbuild.include: ;

include $(srctree)/scripts/Kbuild.include

# Make variables (CC, etc...)

AS		= $(CROSS_COMPILE)as

LD		= $(CROSS_COMPILE)ld

CC		= $(CROSS_COMPILE)gcc

CPP		= $(CC) -E

AR		= $(CROSS_COMPILE)ar

NM		= $(CROSS_COMPILE)nm

STRIP		= $(CROSS_COMPILE)strip

OBJCOPY		= $(CROSS_COMPILE)objcopy

OBJDUMP		= $(CROSS_COMPILE)objdump

AWK		= awk

GENKSYMS	= scripts/genksyms/genksyms

INSTALLKERNEL  := installkernel

DEPMOD		= /sbin/depmod

KALLSYMS	= scripts/kallsyms

PERL		= perl

CHECK		= sparse

CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \

		  -Wbitwise -Wno-return-void $(CF)

CFLAGS_MODULE   =

AFLAGS_MODULE   =

LDFLAGS_MODULE  =

CFLAGS_KERNEL	=

AFLAGS_KERNEL	=

CFLAGS_GCOV	= -fprofile-arcs -ftest-coverage

# Use LINUXINCLUDE when you must reference the include/ directory.

# Needed to be compatible with the O= option

LINUXINCLUDE    := -I$(srctree)/arch/$(hdr-arch)/include -Iinclude \

                   $(if $(KBUILD_SRC), -I$(srctree)/include) \

                   -include include/generated/autoconf.h

KBUILD_CPPFLAGS := -D__KERNEL__

KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \

		   -fno-strict-aliasing -fno-common \

		   -Werror-implicit-function-declaration \

		   -Wno-format-security \

		   -fno-delete-null-pointer-checks

KBUILD_AFLAGS_KERNEL :=

KBUILD_CFLAGS_KERNEL :=

KBUILD_AFLAGS   := -D__ASSEMBLY__

KBUILD_AFLAGS_MODULE  := -DMODULE

KBUILD_CFLAGS_MODULE  := -DMODULE

KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds

# Read KERNELRELEASE from include/config/kernel.release (if it exists)

KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)

KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)

export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION

export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC

export CPP AR NM STRIP OBJCOPY OBJDUMP

export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE

export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS

export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS

export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV

export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE

export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE

export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL

# When compiling out-of-tree modules, put MODVERDIR in the module

# tree rather than in the kernel tree. The kernel tree might

# even be read-only.

export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions

# Files to ignore in find ... statements

RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o

export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git

# ===========================================================================

# Rules shared between *config targets and build targets

# Basic helpers built in scripts/

PHONY += scripts_basic

scripts_basic:

	$(Q)$(MAKE) $(build)=scripts/basic

	$(Q)rm -f .tmp_quiet_recordmcount

# To avoid any implicit rule to kick in, define an empty command.

scripts/basic/%: scripts_basic ;

PHONY += outputmakefile

# outputmakefile generates a Makefile in the output directory, if using a

# separate output directory. This allows convenient use of make in the

# output directory.

outputmakefile:

ifneq ($(KBUILD_SRC),)

	$(Q)ln -fsn $(srctree) source

	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \

	    $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)

endif

# To make sure we do not include .config for any of the *config targets

# catch them early, and hand them over to scripts/kconfig/Makefile

# It is allowed to specify more targets when calling make, including

# mixing *config targets and build targets.

# For example 'make oldconfig all'.

# Detect when mixed targets is specified, and make a second invocation

# of make so .config is not included in this case either (for *config).

no-dot-config-targets := clean mrproper distclean \

			 cscope TAGS tags help %docs check% coccicheck \

			 include/linux/version.h headers_% \

			 kernelversion %src-pkg

config-targets := 0

mixed-targets  := 0

dot-config     := 1

ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)

	ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)

		dot-config := 0

	endif

endif

ifeq ($(KBUILD_EXTMOD),)

        ifneq ($(filter config %config,$(MAKECMDGOALS)),)

                config-targets := 1

                ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)

                        mixed-targets := 1

                endif

        endif

endif

ifeq ($(mixed-targets),1)

# ===========================================================================

# We're called with mixed targets (*config and build targets).

# Handle them one by one.

%:: FORCE

	$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@

else

ifeq ($(config-targets),1)

# ===========================================================================

# *config targets only - make sure prerequisites are updated, and descend

# in scripts/kconfig to make the *config target

# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.

# KBUILD_DEFCONFIG may point out an alternative default configuration

# used for 'make defconfig'

include $(srctree)/arch/$(SRCARCH)/Makefile

export KBUILD_DEFCONFIG KBUILD_KCONFIG

config: scripts_basic outputmakefile FORCE

	$(Q)mkdir -p include/linux include/config

	$(Q)$(MAKE) $(build)=scripts/kconfig $@

%config: scripts_basic outputmakefile FORCE

	$(Q)mkdir -p include/linux include/config

	$(Q)$(MAKE) $(build)=scripts/kconfig $@

else

# ===========================================================================

# Build targets only - this includes vmlinux, arch specific targets, clean

# targets and others. In general all targets except *config targets.

ifeq ($(KBUILD_EXTMOD),)

# Additional helpers built in scripts/

# Carefully list dependencies so we do not try to build scripts twice

# in parallel

PHONY += scripts

scripts: scripts_basic include/config/auto.conf include/config/tristate.conf

	$(Q)$(MAKE) $(build)=$(@)

# Objects we will link into vmlinux / subdirs we need to visit

init-y		:= init/

drivers-y	:= drivers/ sound/ firmware/

net-y		:= net/

libs-y		:= lib/

core-y		:= usr/

endif # KBUILD_EXTMOD

ifeq ($(dot-config),1)

# Read in config

-include include/config/auto.conf

ifeq ($(KBUILD_EXTMOD),)

# Read in dependencies to all Kconfig* files, make sure to run

# oldconfig if changes are detected.

-include include/config/auto.conf.cmd

# To avoid any implicit rule to kick in, define an empty command

$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;

# If .config is newer than include/config/auto.conf, someone tinkered

# with it and forgot to run make oldconfig.

# if auto.conf.cmd is missing then we are probably in a cleaned tree so

# we execute the config step to be sure to catch updated Kconfig files

include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd

	$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig

else

# external modules needs include/generated/autoconf.h and include/config/auto.conf

# but do not care if they are up-to-date. Use auto.conf to trigger the test

PHONY += include/config/auto.conf

include/config/auto.conf:

	$(Q)test -e include/generated/autoconf.h -a -e $@ || (		\

	echo;								\

	echo "  ERROR: Kernel configuration is invalid.";		\

	echo "         include/generated/autoconf.h or $@ are missing.";\

	echo "         Run 'make oldconfig && make prepare' on kernel src to fix it.";	\

	echo;								\

	/bin/false)

endif # KBUILD_EXTMOD

else

# Dummy target needed, because used as prerequisite

include/config/auto.conf: ;

endif # $(dot-config)

# The all: target is the default when no target is given on the

# command line.

# This allow a user to issue only 'make' to build a kernel including modules

# Defaults to vmlinux, but the arch makefile usually adds further targets

all: vmlinux

ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE

KBUILD_CFLAGS	+= -Os

else

KBUILD_CFLAGS	+= -O2

endif

include $(srctree)/arch/$(SRCARCH)/Makefile

ifneq ($(CONFIG_FRAME_WARN),0)

KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})

endif

# Force gcc to behave correct even for buggy distributions

ifndef CONFIG_CC_STACKPROTECTOR

KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)

endif

ifdef CONFIG_FRAME_POINTER

KBUILD_CFLAGS	+= -fno-omit-frame-pointer -fno-optimize-sibling-calls

else

# Some targets (ARM with Thumb2, for example), can't be built with frame

# pointers.  For those, we don't have FUNCTION_TRACER automatically

# select FRAME_POINTER.  However, FUNCTION_TRACER adds -pg, and this is

# incompatible with -fomit-frame-pointer with current GCC, so we don't use

# -fomit-frame-pointer with FUNCTION_TRACER.

ifndef CONFIG_FUNCTION_TRACER

KBUILD_CFLAGS	+= -fomit-frame-pointer

endif

endif

ifdef CONFIG_DEBUG_INFO

KBUILD_CFLAGS	+= -g

KBUILD_AFLAGS	+= -gdwarf-2

endif

ifdef CONFIG_DEBUG_INFO_REDUCED

KBUILD_CFLAGS 	+= $(call cc-option, -femit-struct-debug-baseonly)

endif

ifdef CONFIG_FUNCTION_TRACER

KBUILD_CFLAGS	+= -pg

ifdef CONFIG_DYNAMIC_FTRACE

	ifdef CONFIG_HAVE_C_RECORDMCOUNT

		BUILD_C_RECORDMCOUNT := y

		export BUILD_C_RECORDMCOUNT

	endif

endif

endif

# We trigger additional mismatches with less inlining

ifdef CONFIG_DEBUG_SECTION_MISMATCH

KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)

endif

# arch Makefile may override CC so keep this after arch Makefile is included

NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)

CHECKFLAGS     += $(NOSTDINC_FLAGS)

# warn about C99 declaration after statement

KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)

# disable pointer signed / unsigned warnings in gcc 4.0

KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,)

# disable invalid "can't wrap" optimizations for signed / pointers

KBUILD_CFLAGS	+= $(call cc-option,-fno-strict-overflow)

# conserve stack if available

KBUILD_CFLAGS   += $(call cc-option,-fconserve-stack)

# check for 'asm goto'

ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)

	KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO

endif

# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments

# But warn user when we do so

warn-assign = \

$(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)")

ifneq ($(KCPPFLAGS),)

        $(call warn-assign,CPPFLAGS)

        KBUILD_CPPFLAGS += $(KCPPFLAGS)

endif

ifneq ($(KAFLAGS),)

        $(call warn-assign,AFLAGS)

        KBUILD_AFLAGS += $(KAFLAGS)

endif

ifneq ($(KCFLAGS),)

        $(call warn-assign,CFLAGS)

        KBUILD_CFLAGS += $(KCFLAGS)

endif

# Use --build-id when available.

LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\

			      $(call cc-ldoption, -Wl$(comma)--build-id,))

KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)

LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)

ifeq ($(CONFIG_STRIP_ASM_SYMS),y)

LDFLAGS_vmlinux	+= $(call ld-option, -X,)

endif

# Default kernel image to build when no specific target is given.

# KBUILD_IMAGE may be overruled on the command line or

# set in the environment

# Also any assignments in arch/$(ARCH)/Makefile take precedence over

# this default value

export KBUILD_IMAGE ?= vmlinux

#

# INSTALL_PATH specifies where to place the updated kernel and system map

# images. Default is /boot, but you can set it to other values

export	INSTALL_PATH ?= /boot

#

# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory

# relocations required by build roots.  This is not defined in the

# makefile but the argument can be passed to make if needed.

#

MODLIB	= $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)

export MODLIB

#

#  INSTALL_MOD_STRIP, if defined, will cause modules to be

#  stripped after they are installed.  If INSTALL_MOD_STRIP is '1', then

#  the default option --strip-debug will be used.  Otherwise,

#  INSTALL_MOD_STRIP will used as the options to the strip command.

ifdef INSTALL_MOD_STRIP

ifeq ($(INSTALL_MOD_STRIP),1)

mod_strip_cmd = $(STRIP) --strip-debug

else

mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)

endif # INSTALL_MOD_STRIP=1

else

mod_strip_cmd = true

endif # INSTALL_MOD_STRIP

export mod_strip_cmd

ifeq ($(KBUILD_EXTMOD),)

core-y		+= kernel/ mm/ fs/ ipc/ security/ crypto/ block/

vmlinux-dirs	:= $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \

		     $(core-y) $(core-m) $(drivers-y) $(drivers-m) \

		     $(net-y) $(net-m) $(libs-y) $(libs-m)))

vmlinux-alldirs	:= $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \

		     $(init-n) $(init-) \

		     $(core-n) $(core-) $(drivers-n) $(drivers-) \

		     $(net-n)  $(net-)  $(libs-n)    $(libs-))))

init-y		:= $(patsubst %/, %/built-in.o, $(init-y))

core-y		:= $(patsubst %/, %/built-in.o, $(core-y))

drivers-y	:= $(patsubst %/, %/built-in.o, $(drivers-y))

net-y		:= $(patsubst %/, %/built-in.o, $(net-y))

libs-y1		:= $(patsubst %/, %/lib.a, $(libs-y))

libs-y2		:= $(patsubst %/, %/built-in.o, $(libs-y))

libs-y		:= $(libs-y1) $(libs-y2)

# Build vmlinux

# ---------------------------------------------------------------------------

# vmlinux is built from the objects selected by $(vmlinux-init) and

# $(vmlinux-main). Most are built-in.o files from top-level directories

# in the kernel tree, others are specified in arch/$(ARCH)/Makefile.

# Ordering when linking is important, and $(vmlinux-init) must be first.

#

# vmlinux

#   ^

#   |

#   +-< $(vmlinux-init)

#   |   +--< init/version.o + more

#   |

#   +--< $(vmlinux-main)

#   |    +--< driver/built-in.o mm/built-in.o + more

#   |

#   +-< kallsyms.o (see description in CONFIG_KALLSYMS section)

#

# vmlinux version (uname -v) cannot be updated during normal

# descending-into-subdirs phase since we do not yet know if we need to

# update vmlinux.

# Therefore this step is delayed until just before final link of vmlinux -

# except in the kallsyms case where it is done just before adding the

# symbols to the kernel.

#

# System.map is generated to document addresses of all kernel symbols

vmlinux-init := $(head-y) $(init-y)

vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)

vmlinux-all  := $(vmlinux-init) $(vmlinux-main)

vmlinux-lds  := arch/$(SRCARCH)/kernel/vmlinux.lds

export KBUILD_VMLINUX_OBJS := $(vmlinux-all)

# Rule to link vmlinux - also used during CONFIG_KALLSYMS

# May be overridden by arch/$(ARCH)/Makefile

quiet_cmd_vmlinux__ ?= LD      $@

      cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \

      -T $(vmlinux-lds) $(vmlinux-init)                          \

      --start-group $(vmlinux-main) --end-group                  \

      $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^)

# Generate new vmlinux version

quiet_cmd_vmlinux_version = GEN     .version

      cmd_vmlinux_version = set -e;                     \

	if [ ! -r .version ]; then			\

	  rm -f .version;				\

	  echo 1 >.version;				\

	else						\

	  mv .version .old_version;			\

	  expr 0$$(cat .old_version) + 1 >.version;	\

	fi;						\

	$(MAKE) $(build)=init

# Generate System.map

quiet_cmd_sysmap = SYSMAP

      cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap

# Link of vmlinux

# If CONFIG_KALLSYMS is set .version is already updated

# Generate System.map and verify that the content is consistent

# Use + in front of the vmlinux_version rule to silent warning with make -j2

# First command is ':' to allow us to use + in front of the rule

define rule_vmlinux__

	:

	$(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))

	$(call cmd,vmlinux__)

	$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd

	$(Q)$(if $($(quiet)cmd_sysmap),                                      \

	  echo '  $($(quiet)cmd_sysmap)  System.map' &&)                     \

	$(cmd_sysmap) $@ System.map;                                         \

	if [ $$? -ne 0 ]; then                                               \

		rm -f $@;                                                    \

		/bin/false;                                                  \

	fi;

	$(verify_kallsyms)

endef

ifdef CONFIG_KALLSYMS

# Generate section listing all symbols and add it into vmlinux $(kallsyms.o)

# It's a three stage process:

# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is

#   empty

#   Running kallsyms on that gives us .tmp_kallsyms1.o with

#   the right size - vmlinux version (uname -v) is updated during this step

# o .tmp_vmlinux2 now has a __kallsyms section of the right size,

#   but due to the added section, some addresses have shifted.

#   From here, we generate a correct .tmp_kallsyms2.o

# o The correct .tmp_kallsyms2.o is linked into the final vmlinux.

# o Verify that the System.map from vmlinux matches the map from

#   .tmp_vmlinux2, just in case we did not generate kallsyms correctly.

# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using

#   .tmp_vmlinux3 and .tmp_kallsyms3.o.  This is only meant as a

#   temporary bypass to allow the kernel to be built while the

#   maintainers work out what went wrong with kallsyms.

ifdef CONFIG_KALLSYMS_EXTRA_PASS

last_kallsyms := 3

else

last_kallsyms := 2

endif

kallsyms.o := .tmp_kallsyms$(last_kallsyms).o

define verify_kallsyms

	$(Q)$(if $($(quiet)cmd_sysmap),                                      \

	  echo '  $($(quiet)cmd_sysmap)  .tmp_System.map' &&)                \

	  $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map

	$(Q)cmp -s System.map .tmp_System.map ||                             \

		(echo Inconsistent kallsyms data;                            \

		 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS;                \

		 rm .tmp_kallsyms* ; /bin/false )

endef

# Update vmlinux version before link

# Use + in front of this rule to silent warning about make -j1

# First command is ':' to allow us to use + in front of this rule

cmd_ksym_ld = $(cmd_vmlinux__)

define rule_ksym_ld

	: 

	+$(call cmd,vmlinux_version)

	$(call cmd,vmlinux__)

	$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd

endef

# Generate .S file with all kernel symbols

quiet_cmd_kallsyms = KSYM    $@

      cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \

                     $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@

.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE

	$(call if_changed_dep,as_o_S)

.tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)

	$(call cmd,kallsyms)

# .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version

.tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE

	$(call if_changed_rule,ksym_ld)

.tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE

	$(call if_changed,vmlinux__)

.tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE

	$(call if_changed,vmlinux__)

# Needs to visit scripts/ before $(KALLSYMS) can be used.

$(KALLSYMS): scripts ;

# Generate some data for debugging strange kallsyms problems

debug_kallsyms: .tmp_map$(last_kallsyms)

.tmp_map%: .tmp_vmlinux% FORCE

	($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@

.tmp_map3: .tmp_map2

.tmp_map2: .tmp_map1

endif # ifdef CONFIG_KALLSYMS

# Do modpost on a prelinked vmlinux. The finally linked vmlinux has

# relevant sections renamed as per the linker script.

quiet_cmd_vmlinux-modpost = LD      $@

      cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@                          \

	 $(vmlinux-init) --start-group $(vmlinux-main) --end-group             \

	 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^)

define rule_vmlinux-modpost

	:

	+$(call cmd,vmlinux-modpost)

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@

	$(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd

endef

# vmlinux image - including updated kernel symbols

vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE

ifdef CONFIG_HEADERS_CHECK

	$(Q)$(MAKE) -f $(srctree)/Makefile headers_check

endif

ifdef CONFIG_SAMPLES

	$(Q)$(MAKE) $(build)=samples

endif

ifdef CONFIG_BUILD_DOCSRC

	$(Q)$(MAKE) $(build)=Documentation

endif

	$(call vmlinux-modpost)

	$(call if_changed_rule,vmlinux__)

	$(Q)rm -f .old_version

# build vmlinux.o first to catch section mismatch errors early

ifdef CONFIG_KALLSYMS

.tmp_vmlinux1: vmlinux.o

endif

modpost-init := $(filter-out init/built-in.o, $(vmlinux-init))

vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE

	$(call if_changed_rule,vmlinux-modpost)

# The actual objects are generated when descending, 

# make sure no implicit rule kicks in

$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;

# Handle descending into subdirectories listed in $(vmlinux-dirs)

# Preset locale variables to speed up the build process. Limit locale

# tweaks to this spot to avoid wrong language settings when running

# make menuconfig etc.

# Error messages still appears in the original language

PHONY += $(vmlinux-dirs)

$(vmlinux-dirs): prepare scripts

	$(Q)$(MAKE) $(build)=$@

# Store (new) KERNELRELASE string in include/config/kernel.release

include/config/kernel.release: include/config/auto.conf FORCE

	$(Q)rm -f $@

	$(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@

# Things we need to do before we recursively start building the kernel

# or the modules are listed in "prepare".

# A multi level approach is used. prepareN is processed before prepareN-1.

# archprepare is used in arch Makefiles and when processed asm symlink,

# version.h and scripts_basic is processed / created.

# Listed in dependency order

PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3

# prepare3 is used to check if we are building in a separate output directory,

# and if so do:

# 1) Check that make has not been executed in the kernel src $(srctree)

prepare3: include/config/kernel.release

ifneq ($(KBUILD_SRC),)

	@$(kecho) '  Using $(srctree) as source for kernel'

	$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \

		echo "  $(srctree) is not clean, please run 'make mrproper'";\

		echo "  in the '$(srctree)' directory.";\

		/bin/false; \

	fi;

endif

# prepare2 creates a makefile if using a separate output directory

prepare2: prepare3 outputmakefile

prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \

                   include/config/auto.conf

	$(cmd_crmodverdir)

archprepare: prepare1 scripts_basic

prepare0: archprepare FORCE

	$(Q)$(MAKE) $(build)=.

	$(Q)$(MAKE) $(build)=. missing-syscalls

# All the preparing..

prepare: prepare0

# Generate some files

# ---------------------------------------------------------------------------

# KERNELRELEASE can change from a few different places, meaning version.h

# needs to be updated, so this check is forced on all builds

uts_len := 64

define filechk_utsrelease.h

	if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \

	  echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2;    \

	  exit 1;                                                         \

	fi;                                                               \

	(echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)

endef

define filechk_version.h

	(echo \#define LINUX_VERSION_CODE $(shell                             \

	expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL));     \

	echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)

endef

include/linux/version.h: $(srctree)/Makefile FORCE

	$(call filechk,version.h)

include/generated/utsrelease.h: include/config/kernel.release FORCE

	$(call filechk,utsrelease.h)

PHONY += headerdep

headerdep:

	$(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl

# ---------------------------------------------------------------------------

PHONY += depend dep

depend dep:

	@echo '*** Warning: make $@ is unnecessary now.'

# ---------------------------------------------------------------------------

# Firmware install

INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware

export INSTALL_FW_PATH

PHONY += firmware_install

firmware_install: FORCE

	@mkdir -p $(objtree)/firmware

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install

# ---------------------------------------------------------------------------

# Kernel headers

#Default location for installed headers

export INSTALL_HDR_PATH = $(objtree)/usr

hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj

# If we do an all arch process set dst to asm-$(hdr-arch)

hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)

PHONY += __headers

__headers: include/linux/version.h scripts_basic FORCE

	$(Q)$(MAKE) $(build)=scripts scripts/unifdef

PHONY += headers_install_all

headers_install_all:

	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install

PHONY += headers_install

headers_install: __headers

	$(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \

	$(error Headers not exportable for the $(SRCARCH) architecture))

	$(Q)$(MAKE) $(hdr-inst)=include

	$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst)

PHONY += headers_check_all

headers_check_all: headers_install_all

	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check

PHONY += headers_check

headers_check: headers_install

	$(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1

	$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1

# ---------------------------------------------------------------------------

# Modules

ifdef CONFIG_MODULES

# By default, build modules as well

all: modules

#	Build modules

#

#	A module can be listed more than once in obj-m resulting in

#	duplicate lines in modules.order files.  Those are removed

#	using awk while concatenating to the final file.

PHONY += modules

modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin

	$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order

	@$(kecho) '  Building modules, stage 2.';

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild

modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)

	$(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin

%/modules.builtin: include/config/auto.conf

	$(Q)$(MAKE) $(modbuiltin)=$*

# Target to prepare building external modules

PHONY += modules_prepare

modules_prepare: prepare scripts

# Target to install modules

PHONY += modules_install

modules_install: _modinst_ _modinst_post

PHONY += _modinst_

_modinst_:

	@if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \

		echo "Warning: you may need to install module-init-tools"; \

		echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\

		sleep 1; \

	fi

	@rm -rf $(MODLIB)/kernel

	@rm -f $(MODLIB)/source

	@mkdir -p $(MODLIB)/kernel

	@ln -s $(srctree) $(MODLIB)/source

	@if [ ! $(objtree) -ef  $(MODLIB)/build ]; then \

		rm -f $(MODLIB)/build ; \

		ln -s $(objtree) $(MODLIB)/build ; \

	fi

	@cp -f $(objtree)/modules.order $(MODLIB)/

	@cp -f $(objtree)/modules.builtin $(MODLIB)/

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst

# This depmod is only for convenience to give the initial

# boot a modules.dep even before / is mounted read-write.  However the

# boot script depmod is the master version.

PHONY += _modinst_post

_modinst_post: _modinst_

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst

	$(call cmd,depmod)

else # CONFIG_MODULES

# Modules not configured

# ---------------------------------------------------------------------------

modules modules_install: FORCE

	@echo

	@echo "The present kernel configuration has modules disabled."

	@echo "Type 'make config' and enable loadable module support."

	@echo "Then build a kernel with module support enabled."

	@echo

	@exit 1

endif # CONFIG_MODULES

###

# Cleaning is done on three levels.

# make clean     Delete most generated files

#                Leave enough to build external modules

# make mrproper  Delete the current configuration, and all generated files

# make distclean Remove editor backup files, patch leftover files and the like

# Directories & files removed with 'make clean'

CLEAN_DIRS  += $(MODVERDIR)

CLEAN_FILES +=	vmlinux System.map \

                .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map

# Directories & files removed with 'make mrproper'

MRPROPER_DIRS  += include/config usr/include include/generated

MRPROPER_FILES += .config .config.old .version .old_version             \

                  include/linux/version.h                               \

		  Module.symvers tags TAGS cscope*

# clean - Delete most, but leave enough to build external modules

#

clean: rm-dirs  := $(CLEAN_DIRS)

clean: rm-files := $(CLEAN_FILES)

clean-dirs      := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation)

PHONY += $(clean-dirs) clean archclean

$(clean-dirs):

	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)

clean: archclean

# mrproper - Delete all generated files, including .config

#

mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))

mrproper: rm-files := $(wildcard $(MRPROPER_FILES))

mrproper-dirs      := $(addprefix _mrproper_,Documentation/DocBook scripts)

PHONY += $(mrproper-dirs) mrproper archmrproper

$(mrproper-dirs):

	$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)

mrproper: clean archmrproper $(mrproper-dirs)

	$(call cmd,rmdirs)

	$(call cmd,rmfiles)

# distclean

#

PHONY += distclean

distclean: mrproper

	@find $(srctree) $(RCS_FIND_IGNORE) \

		\( -name '*.orig' -o -name '*.rej' -o -name '*~' \

		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \

		-o -name '.*.rej' -o -size 0 \

		-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \

		-type f -print | xargs rm -f

# Packaging of the kernel to various formats

# ---------------------------------------------------------------------------

# rpm target kept for backward compatibility

package-dir	:= $(srctree)/scripts/package

%src-pkg: FORCE

	$(Q)$(MAKE) $(build)=$(package-dir) $@

%pkg: include/config/kernel.release FORCE

	$(Q)$(MAKE) $(build)=$(package-dir) $@

rpm: include/config/kernel.release FORCE

	$(Q)$(MAKE) $(build)=$(package-dir) $@

# Brief documentation of the typical targets used

# ---------------------------------------------------------------------------

boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)

boards := $(notdir $(boards))

board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))

board-dirs := $(sort $(notdir $(board-dirs:/=)))

help:

	@echo  'Cleaning targets:'

	@echo  '  clean		  - Remove most generated files but keep the config and'

	@echo  '                    enough build support to build external modules'

	@echo  '  mrproper	  - Remove all generated files + config + various backup files'

	@echo  '  distclean	  - mrproper + remove editor backup and patch files'

	@echo  ''

	@echo  'Configuration targets:'

	@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help

	@echo  ''

	@echo  'Other generic targets:'

	@echo  '  all		  - Build all targets marked with [*]'

	@echo  '* vmlinux	  - Build the bare kernel'

	@echo  '* modules	  - Build all modules'

	@echo  '  modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'

	@echo  '  firmware_install- Install all firmware to INSTALL_FW_PATH'

	@echo  '                    (default: $$(INSTALL_MOD_PATH)/lib/firmware)'

	@echo  '  dir/            - Build all files in dir and below'

	@echo  '  dir/file.[oisS] - Build specified target only'

	@echo  '  dir/file.lst    - Build specified mixed source/assembly target only'

	@echo  '                    (requires a recent binutils and recent build (System.map))'

	@echo  '  dir/file.ko     - Build module including final link'

	@echo  '  modules_prepare - Set up for building external modules'

	@echo  '  tags/TAGS	  - Generate tags file for editors'

	@echo  '  cscope	  - Generate cscope index'

	@echo  '  kernelrelease	  - Output the release version string'

	@echo  '  kernelversion	  - Output the version stored in Makefile'

	@echo  '  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \

	 echo  '                    (default: $(INSTALL_HDR_PATH))'; \

	 echo  ''

	@echo  'Static analysers'

	@echo  '  checkstack      - Generate a list of stack hogs'

	@echo  '  namespacecheck  - Name space analysis on compiled kernel'

	@echo  '  versioncheck    - Sanity check on version.h usage'

	@echo  '  includecheck    - Check for duplicate included header files'

	@echo  '  export_report   - List the usages of all exported symbols'

	@echo  '  headers_check   - Sanity check on exported headers'

	@echo  '  headerdep       - Detect inclusion cycles in headers'

	@$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help

	@echo  ''

	@echo  'Kernel packaging:'

	@$(MAKE) $(build)=$(package-dir) help

	@echo  ''

	@echo  'Documentation targets:'

	@$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp

	@echo  ''

	@echo  'Architecture specific targets ($(SRCARCH)):'

	@$(if $(archhelp),$(archhelp),\

		echo '  No architecture specific help defined for $(SRCARCH)')

	@echo  ''

	@$(if $(boards), \

		$(foreach b, $(boards), \

		printf "  %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \

		echo '')

	@$(if $(board-dirs), \

		$(foreach b, $(board-dirs), \

		printf "  %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \

		printf "  %-16s - Show all of the above\\n" help-boards; \

		echo '')

	@echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'

	@echo  '  make V=2   [targets] 2 => give reason for rebuild of target'

	@echo  '  make O=dir [targets] Locate all output files in "dir", including .config'

	@echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'

	@echo  '  make C=2   [targets] Force check of all c source with $$CHECK'

	@echo  ''

	@echo  'Execute "make" or "make all" to build all targets marked with [*] '

	@echo  'For further info see the ./README file'

help-board-dirs := $(addprefix help-,$(board-dirs))

help-boards: $(help-board-dirs)

boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))

$(help-board-dirs): help-%:

	@echo  'Architecture specific targets ($(SRCARCH) $*):'

	@$(if $(boards-per-dir), \

		$(foreach b, $(boards-per-dir), \

		printf "  %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \

		echo '')

# Documentation targets

# ---------------------------------------------------------------------------

%docs: scripts_basic FORCE

	$(Q)$(MAKE) $(build)=Documentation/DocBook $@

else # KBUILD_EXTMOD

###

# External module support.

# When building external modules the kernel used as basis is considered

# read-only, and no consistency checks are made and the make

# system is not used on the basis kernel. If updates are required

# in the basis kernel ordinary make commands (without M=...) must

# be used.

#

# The following are the only valid targets when building external

# modules.

# make M=dir clean     Delete all automatically generated files

# make M=dir modules   Make all modules in specified dir

# make M=dir	       Same as 'make M=dir modules'

# make M=dir modules_install

#                      Install the modules built in the module directory

#                      Assumes install directory is already created

# We are always building modules

KBUILD_MODULES := 1

PHONY += crmodverdir

crmodverdir:

	$(cmd_crmodverdir)

PHONY += $(objtree)/Module.symvers

$(objtree)/Module.symvers:

	@test -e $(objtree)/Module.symvers || ( \

	echo; \

	echo "  WARNING: Symbol version dump $(objtree)/Module.symvers"; \

	echo "           is missing; modules will have no dependencies and modversions."; \

	echo )

module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))

PHONY += $(module-dirs) modules

$(module-dirs): crmodverdir $(objtree)/Module.symvers

	$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)

modules: $(module-dirs)

	@$(kecho) '  Building modules, stage 2.';

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost

PHONY += modules_install

modules_install: _emodinst_ _emodinst_post

install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)

PHONY += _emodinst_

_emodinst_:

	$(Q)mkdir -p $(MODLIB)/$(install-dir)

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst

PHONY += _emodinst_post

_emodinst_post: _emodinst_

	$(call cmd,depmod)

clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))

PHONY += $(clean-dirs) clean

$(clean-dirs):

	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)

clean:	rm-dirs := $(MODVERDIR)

clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers

help:

	@echo  '  Building external modules.'

	@echo  '  Syntax: make -C path/to/kernel/src M=$$PWD target'

	@echo  ''

	@echo  '  modules         - default target, build the module(s)'

	@echo  '  modules_install - install the module'

	@echo  '  clean           - remove generated files in module directory only'

	@echo  ''

# Dummies...

PHONY += prepare scripts

prepare: ;

scripts: ;

endif # KBUILD_EXTMOD

clean: $(clean-dirs)

	$(call cmd,rmdirs)

	$(call cmd,rmfiles)

	@find $(or $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \

		\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \

		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \

		-o -name '*.symtypes' -o -name 'modules.order' \

		-o -name modules.builtin -o -name '.tmp_*.o.*' \

		-o -name '*.gcno' \) -type f -print | xargs rm -f

# Generate tags for editors

# ---------------------------------------------------------------------------

quiet_cmd_tags = GEN     $@

      cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@

tags TAGS cscope: FORCE

	$(call cmd,tags)

# Scripts to check various things for consistency

# ---------------------------------------------------------------------------

includecheck:

	find * $(RCS_FIND_IGNORE) \

		-name '*.[hcS]' -type f -print | sort \

		| xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl

versioncheck:

	find * $(RCS_FIND_IGNORE) \

		-name '*.[hcS]' -type f -print | sort \

		| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl

coccicheck:

	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@

namespacecheck:

	$(PERL) $(srctree)/scripts/namespace.pl

export_report:

	$(PERL) $(srctree)/scripts/export_report.pl

endif #ifeq ($(config-targets),1)

endif #ifeq ($(mixed-targets),1)

PHONY += checkstack kernelrelease kernelversion

# UML needs a little special treatment here.  It wants to use the host

# toolchain, so needs $(SUBARCH) passed to checkstack.pl.  Everyone

# else wants $(ARCH), including people doing cross-builds, which means

# that $(SUBARCH) doesn't work here.

ifeq ($(ARCH), um)

CHECKSTACK_ARCH := $(SUBARCH)

else

CHECKSTACK_ARCH := $(ARCH)

endif

checkstack:

	$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \

	$(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)

kernelrelease:

	@echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"

kernelversion:

	@echo $(KERNELVERSION)

# Single targets

# ---------------------------------------------------------------------------

# Single targets are compatible with:

# - build with mixed source and output

# - build with separate output dir 'make O=...'

# - external modules

#

#  target-dir => where to store outputfile

#  build-dir  => directory in kernel source tree to use

ifeq ($(KBUILD_EXTMOD),)

        build-dir  = $(patsubst %/,%,$(dir $@))

        target-dir = $(dir $@)

else

        zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))

        build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))

        target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))

endif

%.s: %.c prepare scripts FORCE

	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)

%.i: %.c prepare scripts FORCE

	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)

%.o: %.c prepare scripts FORCE

	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)

%.lst: %.c prepare scripts FORCE

	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)

%.s: %.S prepare scripts FORCE

	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)

%.o: %.S prepare scripts FORCE

	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)

%.symtypes: %.c prepare scripts FORCE

	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)

# Modules

/: prepare scripts FORCE

	$(cmd_crmodverdir)

	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \

	$(build)=$(build-dir)

%/: prepare scripts FORCE

	$(cmd_crmodverdir)

	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \

	$(build)=$(build-dir)

%.ko: prepare scripts FORCE

	$(cmd_crmodverdir)

	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \

	$(build)=$(build-dir) $(@:.ko=.o)

	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost

# FIXME Should go into a make.lib or something 

# ===========================================================================

quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))

      cmd_rmdirs = rm -rf $(rm-dirs)

quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))

      cmd_rmfiles = rm -f $(rm-files)

# Run depmod only if we have System.map and depmod is executable

quiet_cmd_depmod = DEPMOD  $(KERNELRELEASE)

      cmd_depmod = \

	if [ -r System.map -a -x $(DEPMOD) ]; then                              \

		$(DEPMOD) -ae -F System.map                                     \

		$(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) )     \

		$(KERNELRELEASE);                                               \

	fi

# Create temporary dir for module support files

# clean it up only when building all modules

cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \

                  $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)

a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \

	  $(KBUILD_AFLAGS_KERNEL)                              \

	  $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \

	  $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)

quiet_cmd_as_o_S = AS      $@

cmd_as_o_S       = $(CC) $(a_flags) -c -o $@ $<

# read all saved command lines

targets := $(wildcard $(sort $(targets)))

cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))

ifneq ($(cmd_files),)

  $(cmd_files): ;	# Do not try to update included dependency files

  include $(cmd_files)

endif

# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir

# Usage:

# $(Q)$(MAKE) $(clean)=dir

clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj

endif	# skip-makefile

PHONY += FORCE

FORCE:

# Declare the contents of the .PHONY variable as phony.  We keep that

# information in a variable so we can use it in if_changed and friends.

.PHONY: $(PHONY)