1 files changed, 1343 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 000000000000..8e5f9bbdf4de
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,1343 @@
+VERSION = 2
+PATCHLEVEL = 6
+SUBLEVEL = 12
+EXTRAVERSION =-rc2
+NAME=Woozy Numbat
+
+# *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 print "Entering directory ..."
+MAKEFLAGS += --no-print-directory
+
+# 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
+
+ifdef V
+  ifeq ("$(origin V)", "command line")
+    KBUILD_VERBOSE = $(V)
+  endif
+endif
+ifndef KBUILD_VERBOSE
+  KBUILD_VERBOSE = 0
+endif
+
+# Call sparse as part of compilation of C files
+# Use 'make C=1' to enable sparse checking
+
+ifdef C
+  ifeq ("$(origin C)", "command line")
+    KBUILD_CHECKSRC = $(C)
+  endif
+endif
+ifndef KBUILD_CHECKSRC
+  KBUILD_CHECKSRC = 0
+endif
+
+# Use make M=dir to specify directory of external module to build
+# Old syntax make ... SUBDIRS=$PWD is still supported
+# Setting the environment variable KBUILD_EXTMOD take precedence
+ifdef SUBDIRS
+  KBUILD_EXTMOD ?= $(SUBDIRS)
+endif
+ifdef M
+  ifeq ("$(origin M)", "command line")
+    KBUILD_EXTMOD := $(M)
+  endif
+endif
+
+
+# kbuild supports saving output files in a separate directory.
+# To locate output files in a separate directory two syntaxes are supported.
+# In both cases the working directory must be the root of the kernel src.
+# 1) O=
+# Use "make O=dir/to/store/output/files/"
+# 
+# 2) Set KBUILD_OUTPUT
+# Set the environment variable KBUILD_OUTPUT to point to the directory
+# where the output files shall be placed.
+# export KBUILD_OUTPUT=dir/to/store/output/files/
+# make
+#
+# The O= assignment takes precedence over the KBUILD_OUTPUT environment
+# variable.
+
+
+# KBUILD_SRC is set on invocation of make in OBJ directory
+# KBUILD_SRC is not intended to be used by the regular user (for now)
+ifeq ($(KBUILD_SRC),)
+
+# OK, Make called in directory where kernel src resides
+# Do we want to locate output files in a separate directory?
+ifdef O
+  ifeq ("$(origin O)", "command line")
+    KBUILD_OUTPUT := $(O)
+  endif
+endif
+
+# That's our default target when none is given on the command line
+.PHONY: _all
+_all:
+
+ifneq ($(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: $(MAKECMDGOALS)
+
+$(filter-out _all,$(MAKECMDGOALS)) _all:
+        $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT)         \
+        KBUILD_SRC=$(CURDIR)         KBUILD_VERBOSE=$(KBUILD_VERBOSE)   \
+        KBUILD_CHECK=$(KBUILD_CHECK) KBUILD_EXTMOD="$(KBUILD_EXTMOD)"   \
+        -f $(CURDIR)/Makefile $@
+
+# Leave processing to above invocation of make
+skip-makefile := 1
+endif # ifneq ($(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))
+TOPDIR          := $(srctree)
+# FIXME - TOPDIR is obsolete, use srctree/objtree
+objtree         := $(CURDIR)
+src             := $(srctree)
+obj             := $(objtree)
+
+VPATH           := $(srctree)
+
+export srctree objtree VPATH TOPDIR
+
+nullstring :=
+space      := $(nullstring) # end of line
+
+# Take the contents of any files called localversion* and the config
+# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. Be
+# careful not to include files twice if building in the source
+# directory. LOCALVERSION from the command line override all of this
+
+localver := $(objtree)/localversion* $(srctree)/localversion*
+localver := $(sort $(wildcard $(localver)))
+# skip backup files (containing '~')
+localver := $(foreach f, $(localver), $(if $(findstring ~, $(f)),,$(f)))
+
+LOCALVERSION = $(subst $(space),, \
+               $(shell cat /dev/null $(localver)) \
+               $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
+
+KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)$(LOCALVERSION)
+
+# 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/ )
+
+# 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.
+# Default value for CROSS_COMPILE is not to prefix executables
+# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
+
+ARCH            ?= $(SUBARCH)
+CROSS_COMPILE   ?=
+
+# Architecture as present in compile.h
+UTS_MACHINE := $(ARCH)
+
+# 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 -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 uptodate 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 KBUILD_VERBOSE
+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 wil 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 usefull
+# 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
+
+######
+# cc support functions to be used (only) in arch/$(ARCH)/Makefile
+# See documentation in Documentation/kbuild/makefiles.txt
+
+# cc-option
+# Usage: cflags-y += $(call gcc-option, -march=winchip-c6, -march=i586)
+
+cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
+             > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
+
+# For backward compatibility
+check_gcc = $(warning check_gcc is deprecated - use cc-option) \
+            $(call cc-option, $(1),$(2))
+
+# cc-option-yn
+# Usage: flag := $(call cc-option-yn, -march=winchip-c6)
+cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
+                > /dev/null 2>&1; then echo "y"; else echo "n"; fi;)
+
+# cc-option-align
+# Prefix align with either -falign or -malign
+cc-option-align = $(subst -functions=0,,\
+        $(call cc-option,-falign-functions=0,-malign-functions=0))
+
+# cc-version
+# Usage gcc-ver := $(call cc-version $(CC))
+cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \
+              $(if $(1), $(1), $(CC)))
+
+
+# Look for make include files relative to root of kernel src
+MAKEFLAGS += --include-dir=$(srctree)
+
+# For maximum performance (+ possibly random breakage, uncomment
+# the following)
+
+#MAKEFLAGS += -rR
+
+# 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
+DEPMOD          = /sbin/depmod
+KALLSYMS        = scripts/kallsyms
+PERL            = perl
+CHECK           = sparse
+
+NOSTDINC_FLAGS  = -nostdinc -isystem $(shell $(CC) -print-file-name=include)
+CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__
+CHECKFLAGS     += $(NOSTDINC_FLAGS)
+MODFLAGS        = -DMODULE
+CFLAGS_MODULE   = $(MODFLAGS)
+AFLAGS_MODULE   = $(MODFLAGS)
+LDFLAGS_MODULE  = -r
+CFLAGS_KERNEL   =
+AFLAGS_KERNEL   =
+
+
+# Use LINUXINCLUDE when you must reference the include/ directory.
+# Needed to be compatible with the O= option
+LINUXINCLUDE    := -Iinclude \
+                   $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include)
+
+CPPFLAGS        := -D__KERNEL__ $(LINUXINCLUDE)
+
+CFLAGS          := -Wall -Wstrict-prototypes -Wno-trigraphs \
+                   -fno-strict-aliasing -fno-common \
+                   -ffreestanding
+AFLAGS          := -D__ASSEMBLY__
+
+export  VERSION PATCHLEVEL SUBLEVEL EXTRAVERSION LOCALVERSION KERNELRELEASE \
+        ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
+        CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
+        HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
+
+export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
+export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 
+export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
+
+# 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
+
+# The temporary file to save gcc -MD generated dependencies must not
+# contain a comma
+comma := ,
+depfile = $(subst $(comma),_,$(@D)/.$(@F).d)
+
+# Files to ignore in find ... statements
+
+RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc \) -prune -o
+RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc
+
+# ===========================================================================
+# Rules shared between *config targets and build targets
+
+# Basic helpers built in scripts/
+.PHONY: scripts_basic
+scripts_basic:
+        $(Q)$(MAKE) $(build)=scripts/basic
+
+.PHONY: outputmakefile
+# outputmakefile generate a Makefile to be placed in output directory, if
+# using a seperate output directory. This allows convinient use
+# of make in output directory
+outputmakefile:
+        $(Q)if test ! $(srctree) -ef $(objtree); then \
+        $(CONFIG_SHELL) $(srctree)/scripts/mkmakefile              \
+            $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)         \
+            > $(objtree)/Makefile;                                 \
+            echo '  GEN    $(objtree)/Makefile';                   \
+        fi
+
+# To make sure we do not include .config for any of the *config targets
+# catch them early, and hand them over to scripts/kconfig/Makefile
+# It is allowed to specify more targets when calling make, including
+# mixing *config targets and build targets.
+# For example 'make oldconfig all'. 
+# Detect when mixed targets is specified, and make a second invocation
+# of make so .config is not included in this case either (for *config).
+
+no-dot-config-targets := clean mrproper distclean \
+                         cscope TAGS tags help %docs check%
+
+config-targets := 0
+mixed-targets  := 0
+dot-config     := 1
+
+ifneq ($(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 $(srctree)/arch/$(ARCH)/Makefile
+export KBUILD_DEFCONFIG
+
+config: scripts_basic outputmakefile FORCE
+        $(Q)$(MAKE) $(build)=scripts/kconfig $@
+%config: scripts_basic outputmakefile FORCE
+        $(Q)$(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 parrallel
+.PHONY: scripts
+scripts: scripts_basic include/config/MARKER
+        $(Q)$(MAKE) $(build)=$(@)
+
+scripts_basic: include/linux/autoconf.h
+
+# Objects we will link into vmlinux / subdirs we need to visit
+init-y          := init/
+drivers-y       := drivers/ sound/
+net-y           := net/
+libs-y          := lib/
+core-y          := usr/
+endif # KBUILD_EXTMOD
+
+ifeq ($(dot-config),1)
+# In this section, we need .config
+
+# Read in dependencies to all Kconfig* files, make sure to run
+# oldconfig if changes are detected.
+-include .config.cmd
+
+include .config
+
+# If .config needs to be updated, it will be done via the dependency
+# that autoconf has on .config.
+# To avoid any implicit rule to kick in, define an empty command
+.config: ;
+
+# If .config is newer than include/linux/autoconf.h, someone tinkered
+# with it and forgot to run make oldconfig
+include/linux/autoconf.h: .config
+        $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
+else
+# Dummy target needed, because used as prerequisite
+include/linux/autoconf.h: ;
+endif
+
+# 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 vmlinux but it is usually overriden in the arch makefile
+all: vmlinux
+
+ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+CFLAGS          += -Os
+else
+CFLAGS          += -O2
+endif
+
+#Add align options if CONFIG_CC_* is not equal to 0
+add-align = $(if $(filter-out 0,$($(1))),$(cc-option-align)$(2)=$($(1)))
+CFLAGS          += $(call add-align,CONFIG_CC_ALIGN_FUNCTIONS,-functions)
+CFLAGS          += $(call add-align,CONFIG_CC_ALIGN_LABELS,-labels)
+CFLAGS          += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
+CFLAGS          += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
+
+ifdef CONFIG_FRAME_POINTER
+CFLAGS          += -fno-omit-frame-pointer
+else
+CFLAGS          += -fomit-frame-pointer
+endif
+
+ifdef CONFIG_DEBUG_INFO
+CFLAGS          += -g
+endif
+
+include $(srctree)/arch/$(ARCH)/Makefile
+
+# warn about C99 declaration after statement
+CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
+
+# disable pointer signedness warnings in gcc 4.0
+CFLAGS += $(call cc-option,-Wno-pointer-sign,)
+
+# Default kernel image to build when no specific target is given.
+# KBUILD_IMAGE may be overruled on the commandline or
+# set in the environment
+# Also any assignments in arch/$(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 arguement can be passed to make if needed.
+#
+
+MODLIB  := $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
+export MODLIB
+
+
+ifeq ($(KBUILD_EXTMOD),)
+core-y          += kernel/ mm/ fs/ ipc/ security/ crypto/
+
+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 build 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) $(vmlinux-main)
+vmlinux-lds  := arch/$(ARCH)/kernel/vmlinux.lds
+
+# 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) $(vmlinux-main) FORCE ,$^)
+
+# Generate new vmlinux version
+quiet_cmd_vmlinux_version = GEN     .version
+      cmd_vmlinux_version = set -e;                     \
+        . $(srctree)/scripts/mkversion > .tmp_version;  \
+        mv -f .tmp_version .version;                    \
+        $(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
+
+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
+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 ;
+
+endif # ifdef CONFIG_KALLSYMS
+
+# vmlinux image - including updated kernel symbols
+vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
+        $(call if_changed_rule,vmlinux__)
+
+# The actual objects are generated when descending, 
+# make sure no implicit rule kicks in
+$(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-all scripts
+        $(Q)$(MAKE) $(build)=$@
+
+# Things we need to do before we recursively start building the kernel
+# or the modules are listed in "prepare-all".
+# A multi level approach is used. prepare1 is updated first, then prepare0.
+# prepare-all is the collection point for the prepare targets.
+
+.PHONY: prepare-all prepare prepare0 prepare1 prepare2
+
+# prepare2 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 $(srctree)
+# 2) Create the include2 directory, used for the second asm symlink
+
+prepare2:
+ifneq ($(KBUILD_SRC),)
+        @echo '  Using $(srctree) as source for kernel'
+        $(Q)if [ -h $(srctree)/include/asm -o -f $(srctree)/.config ]; then \
+                echo "  $(srctree) is not clean, please run 'make mrproper'";\
+                echo "  in the '$(srctree)' directory.";\
+                /bin/false; \
+        fi;
+        $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
+        $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
+endif
+
+# prepare1 creates a makefile if using a separate output directory
+prepare1: prepare2 outputmakefile
+
+prepare0: prepare1 include/linux/version.h include/asm include/config/MARKER
+ifneq ($(KBUILD_MODULES),)
+        $(Q)rm -rf $(MODVERDIR)
+        $(Q)mkdir -p $(MODVERDIR)
+endif
+
+# All the preparing..
+prepare-all: prepare0 prepare
+
+#       Leave this as default for preprocessing vmlinux.lds.S, which is now
+#       done in arch/$(ARCH)/kernel/Makefile
+
+export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
+
+# Single targets
+# ---------------------------------------------------------------------------
+
+%.s: %.c scripts FORCE
+        $(Q)$(MAKE) $(build)=$(@D) $@
+%.i: %.c scripts FORCE
+        $(Q)$(MAKE) $(build)=$(@D) $@
+%.o: %.c scripts FORCE
+        $(Q)$(MAKE) $(build)=$(@D) $@
+%/:      scripts prepare FORCE
+        $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@D)
+%.lst: %.c scripts FORCE
+        $(Q)$(MAKE) $(build)=$(@D) $@
+%.s: %.S scripts FORCE
+        $(Q)$(MAKE) $(build)=$(@D) $@
+%.o: %.S scripts FORCE
+        $(Q)$(MAKE) $(build)=$(@D) $@
+
+#       FIXME: The asm symlink changes when $(ARCH) changes. That's
+#       hard to detect, but I suppose "make mrproper" is a good idea
+#       before switching between archs anyway.
+
+include/asm:
+        @echo '  SYMLINK $@ -> include/asm-$(ARCH)'
+        $(Q)if [ ! -d include ]; then mkdir -p include; fi;
+        @ln -fsn asm-$(ARCH) $@
+
+#       Split autoconf.h into include/linux/config/*
+
+include/config/MARKER: include/linux/autoconf.h
+        @echo '  SPLIT   include/linux/autoconf.h -> include/config/*'
+        @scripts/basic/split-include include/linux/autoconf.h include/config
+        @touch $@
+
+# Generate some files
+# ---------------------------------------------------------------------------
+
+# KERNELRELEASE can change from a few different places, meaning version.h
+# needs to be updated, so this check is forced on all builds
+
+uts_len := 64
+
+define filechk_version.h
+        if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
+          echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
+          exit 1; \
+        fi; \
+        (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
+          echo \#define LINUX_VERSION_CODE `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)
+
+# ---------------------------------------------------------------------------
+
+.PHONY: depend dep
+depend dep:
+        @echo '*** Warning: make $@ is unnecessary now.'
+
+# ---------------------------------------------------------------------------
+# Modules
+
+ifdef CONFIG_MODULES
+
+#       By default, build modules as well
+
+all: modules
+
+#       Build modules
+
+.PHONY: modules
+modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
+        @echo '  Building modules, stage 2.';
+        $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
+
+
+# Target to prepare building external modules
+.PHONY: modules_prepare
+modules_prepare: prepare-all scripts
+
+# Target to install modules
+.PHONY: modules_install
+modules_install: _modinst_ _modinst_post
+
+.PHONY: _modinst_
+_modinst_:
+        @if [ -z "`$(DEPMOD) -V | 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
+        $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
+
+# If System.map exists, run depmod.  This deliberately does not have a
+# dependency on System.map since that would run the dependency tree on
+# vmlinux.  This depmod is only for convenience to give the initial
+# boot a modules.dep even before / is mounted read-write.  However the
+# boot script depmod is the master version.
+ifeq "$(strip $(INSTALL_MOD_PATH))" ""
+depmod_opts     :=
+else
+depmod_opts     := -b $(INSTALL_MOD_PATH) -r
+endif
+.PHONY: _modinst_post
+_modinst_post: _modinst_
+        if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
+
+else # CONFIG_MODULES
+
+# Modules not configured
+# ---------------------------------------------------------------------------
+
+modules modules_install: FORCE
+        @echo
+        @echo "The present kernel configuration has modules disabled."
+        @echo "Type 'make config' and enable loadable module support."
+        @echo "Then build a kernel with module support enabled."
+        @echo
+        @exit 1
+
+endif # CONFIG_MODULES
+
+# Generate asm-offsets.h 
+# ---------------------------------------------------------------------------
+
+define filechk_gen-asm-offsets
+        (set -e; \
+         echo "#ifndef __ASM_OFFSETS_H__"; \
+         echo "#define __ASM_OFFSETS_H__"; \
+         echo "/*"; \
+         echo " * DO NOT MODIFY."; \
+         echo " *"; \
+         echo " * This file was generated by arch/$(ARCH)/Makefile"; \
+         echo " *"; \
+         echo " */"; \
+         echo ""; \
+         sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
+         echo ""; \
+         echo "#endif" )
+endef
+
+
+###
+# 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 include2
+MRPROPER_FILES += .config .config.old include/asm .version \
+                  include/linux/autoconf.h 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))
+
+.PHONY: $(clean-dirs) clean archclean
+$(clean-dirs):
+        $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
+
+clean: archclean $(clean-dirs)
+        $(call cmd,rmdirs)
+        $(call cmd,rmfiles)
+        @find . $(RCS_FIND_IGNORE) \
+                \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
+                -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
+                -type f -print | xargs rm -f
+
+# 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
+
+.PHONY: %-pkg rpm
+
+%pkg: FORCE
+        $(Q)$(MAKE) -f $(package-dir)/Makefile $@
+rpm: FORCE
+        $(Q)$(MAKE) -f $(package-dir)/Makefile $@
+
+
+# Brief documentation of the typical targets used
+# ---------------------------------------------------------------------------
+
+boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
+boards := $(notdir $(boards))
+
+help:
+        @echo  'Cleaning targets:'
+        @echo  '  clean           - remove most generated files but keep the config'
+        @echo  '  mrproper        - remove all generated files + config + various backup files'
+        @echo  ''
+        @echo  'Configuration targets:'
+        @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
+        @echo  ''
+        @echo  'Other generic targets:'
+        @echo  '  all             - Build all targets marked with [*]'
+        @echo  '* vmlinux         - Build the bare kernel'
+        @echo  '* modules         - Build all modules'
+        @echo  '  modules_install - Install all modules'
+        @echo  '  dir/            - Build all files in dir and below'
+        @echo  '  dir/file.[ois]  - Build specified target only'
+        @echo  '  rpm             - Build a kernel as an RPM package'
+        @echo  '  tags/TAGS       - Generate tags file for editors'
+        @echo  '  cscope          - Generate cscope index'
+        @echo  ''
+        @echo  'Static analysers'
+        @echo  '  buildcheck      - List dangling references to vmlinux discarded sections'
+        @echo  '                    and init sections from non-init sections'
+        @echo  '  checkstack      - Generate a list of stack hogs'
+        @echo  '  namespacecheck  - Name space analysis on compiled kernel'
+        @echo  ''
+        @echo  'Kernel packaging:'
+        @$(MAKE) -f $(package-dir)/Makefile help
+        @echo  ''
+        @echo  'Documentation targets:'
+        @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
+        @echo  ''
+        @echo  'Architecture specific targets ($(ARCH)):'
+        @$(if $(archhelp),$(archhelp),\
+                echo '  No architecture specific help defined for $(ARCH)')
+        @echo  ''
+        @$(if $(boards), \
+                $(foreach b, $(boards), \
+                printf "  %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
+                echo '')
+
+        @echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
+        @echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
+        @echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse)'
+        @echo  '  make C=2   [targets] Force check of all c source with $$CHECK (sparse)'
+        @echo  ''
+        @echo  'Execute "make" or "make all" to build all targets marked with [*] '
+        @echo  'For further info see the ./README file'
+
+
+# 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 build in the module directory
+#                      Assumes install directory is already created
+
+# We are always building modules
+KBUILD_MODULES := 1
+.PHONY: crmodverdir
+crmodverdir:
+        $(Q)mkdir -p $(MODVERDIR)
+
+.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)
+        @echo '  Building modules, stage 2.';
+        $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
+
+.PHONY: modules_install
+modules_install:
+        $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
+
+clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
+
+.PHONY: $(clean-dirs) clean
+$(clean-dirs):
+        $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
+
+clean:  rm-dirs := $(MODVERDIR)
+clean: $(clean-dirs)
+        $(call cmd,rmdirs)
+        @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
+                \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
+                -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
+                -type f -print | xargs rm -f
+
+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  ''
+endif # KBUILD_EXTMOD
+
+# Generate tags for editors
+# ---------------------------------------------------------------------------
+
+#We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
+#(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
+#Adding $(srctree) adds about 20M on i386 to the size of the output file!
+
+ifeq ($(KBUILD_OUTPUT),)
+__srctree =
+else
+__srctree = $(srctree)/
+endif
+
+define all-sources
+        ( find $(__srctree) $(RCS_FIND_IGNORE) \
+               \( -name include -o -name arch \) -prune -o \
+               -name '*.[chS]' -print; \
+          find $(__srctree)arch/$(ARCH) $(RCS_FIND_IGNORE) \
+               -name '*.[chS]' -print; \
+          find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
+               -name '*.[chS]' -print; \
+          find $(__srctree)include $(RCS_FIND_IGNORE) \
+               \( -name config -o -name 'asm-*' \) -prune \
+               -o -name '*.[chS]' -print; \
+          find $(__srctree)include/asm-$(ARCH) $(RCS_FIND_IGNORE) \
+               -name '*.[chS]' -print; \
+          find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
+               -name '*.[chS]' -print )
+endef
+
+quiet_cmd_cscope-file = FILELST cscope.files
+      cmd_cscope-file = $(all-sources) > cscope.files
+
+quiet_cmd_cscope = MAKE    cscope.out
+      cmd_cscope = cscope -k -b -q
+
+cscope: FORCE
+        $(call cmd,cscope-file)
+        $(call cmd,cscope)
+
+quiet_cmd_TAGS = MAKE   $@
+cmd_TAGS = $(all-sources) | etags -
+
+#       Exuberant ctags works better with -I
+
+quiet_cmd_tags = MAKE   $@
+define cmd_tags
+        rm -f $@; \
+        CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL"`; \
+        $(all-sources) | xargs ctags $$CTAGSF -a --extra=+f
+endef
+
+TAGS: FORCE
+        $(call cmd,TAGS)
+
+tags: FORCE
+        $(call cmd,tags)
+
+
+# Scripts to check various things for consistency
+# ---------------------------------------------------------------------------
+
+configcheck:
+        find * $(RCS_FIND_IGNORE) \
+                -name '*.[hcS]' -type f -print | sort \
+                | xargs $(PERL) -w scripts/checkconfig.pl
+
+includecheck:
+        find * $(RCS_FIND_IGNORE) \
+                -name '*.[hcS]' -type f -print | sort \
+                | xargs $(PERL) -w scripts/checkincludes.pl
+
+versioncheck:
+        find * $(RCS_FIND_IGNORE) \
+                -name '*.[hcS]' -type f -print | sort \
+                | xargs $(PERL) -w scripts/checkversion.pl
+
+buildcheck:
+        $(PERL) $(srctree)/scripts/reference_discarded.pl
+        $(PERL) $(srctree)/scripts/reference_init.pl
+
+namespacecheck:
+        $(PERL) $(srctree)/scripts/namespace.pl
+
+endif #ifeq ($(config-targets),1)
+endif #ifeq ($(mixed-targets),1)
+
+.PHONY: checkstack
+checkstack:
+        $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
+        $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
+
+kernelrelease:
+        @echo $(KERNELRELEASE)
+
+# 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 $(rm-files)
+
+
+a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
+          $(NOSTDINC_FLAGS) $(CPPFLAGS) \
+          $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).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
+
+# Execute command and generate cmd file
+if_changed = $(if $(strip $? \
+                          $(filter-out $(cmd_$(1)),$(cmd_$@))\
+                          $(filter-out $(cmd_$@),$(cmd_$(1)))),\
+        @set -e; \
+        $(if $($(quiet)cmd_$(1)),echo '  $(subst ','\'',$($(quiet)cmd_$(1)))';) \
+        $(cmd_$(1)); \
+        echo 'cmd_$@ := $(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).cmd)
+
+
+# execute the command and also postprocess generated .d dependencies
+# file
+if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
+                          $(filter-out $(cmd_$(1)),$(cmd_$@))\
+                          $(filter-out $(cmd_$@),$(cmd_$(1)))),\
+        $(Q)set -e; \
+        $(if $($(quiet)cmd_$(1)),echo '  $(subst ','\'',$($(quiet)cmd_$(1)))';) \
+        $(cmd_$(1)); \
+        scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).tmp; \
+        rm -f $(depfile); \
+        mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd)
+
+# Usage: $(call if_changed_rule,foo)
+# will check if $(cmd_foo) changed, or any of the prequisites changed,
+# and if so will execute $(rule_foo)
+
+if_changed_rule = $(if $(strip $? \
+                               $(filter-out $(cmd_$(1)),$(cmd_$(@F)))\
+                               $(filter-out $(cmd_$(@F)),$(cmd_$(1)))),\
+                       $(Q)$(rule_$(1)))
+
+# If quiet is set, only print short version of command
+
+cmd = @$(if $($(quiet)cmd_$(1)),echo '  $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
+
+# filechk is used to check if the content of a generated file is updated.
+# Sample usage:
+# define filechk_sample
+#       echo $KERNELRELEASE
+# endef
+# version.h : Makefile
+#       $(call filechk,sample)
+# The rule defined shall write to stdout the content of the new file.
+# The existing file will be compared with the new one.
+# - If no file exist it is created
+# - If the content differ the new file is used
+# - If they are equal no change, and no timestamp update
+
+define filechk
+        @set -e;                                \
+        echo '  CHK     $@';                    \
+        mkdir -p $(dir $@);                     \
+        $(filechk_$(1)) < $< > $@.tmp;          \
+        if [ -r $@ ] && cmp -s $@ $@.tmp; then  \
+                rm -f $@.tmp;                   \
+        else                                    \
+                echo '  UPD     $@';            \
+                mv -f $@.tmp $@;                \
+        fi
+endef
+
+# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=dir
+# Usage:
+# $(Q)$(MAKE) $(build)=dir
+build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
+
+# 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
+
+#       $(call descend,<dir>,<target>)
+#       Recursively call a sub-make in <dir> with target <target>
+# Usage is deprecated, because make does not see this as an invocation of make.
+descend =$(Q)$(MAKE) -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj=$(1) $(2)
+
+endif   # skip-makefile
+
+FORCE: