-# 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 = $(V)
- endif
-endif
-ifndef KBUILD_VERBOSE
- KBUILD_VERBOSE = 0
-endif
-
-# Call checker as part of compilation of C files
-# Use 'make C=1' to enable checking (sparse, by default)
-# Override with 'make C=1 CHECK=checker_executable CHECKFLAGS=....'
-
-ifdef C
- ifeq ("$(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_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 := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
-
-export srctree objtree VPATH TOPDIR
-
-
-# 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/ )
-
-# 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)
-
-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 -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
-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
-DEPMOD = /sbin/depmod
-KALLSYMS = scripts/kallsyms
-PERL = perl
-CHECK = sparse
-
-CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
-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) \
- -include include/linux/autoconf.h
-
-CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
-
-CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
- -fno-strict-aliasing -fno-common -Wstrict-prototypes -Wundef -Werror-implicit-function-declaration
-AFLAGS := -D__ASSEMBLY__
-
-# 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 CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
-export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
-export 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
-
-# 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) $(build)=scripts/basic
-
-# To avoid any implicit rule to kick in, define an empty command.
-scripts/basic/%: scripts_basic ;
-
-PHONY += outputmakefile
-# outputmakefile generates a Makefile in the output directory, if using a
-# separate output directory. This allows convenient use of make in the
-# output directory.
-outputmakefile:
-ifneq ($(KBUILD_SRC),)
- $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
- $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
-endif
-
-# To make sure we do not include .config for any of the *config targets
-# catch them early, and hand them over to scripts/kconfig/Makefile
-# It is allowed to specify more targets when calling make, including
-# mixing *config targets and build targets.
-# For example 'make oldconfig all'.
-# Detect when mixed targets is specified, and make a second invocation
-# of make so .config is not included in this case either (for *config).
-
-no-dot-config-targets := clean mrproper distclean \
- cscope TAGS tags help %docs check% \
- include/linux/version.h headers_% \
- kernelrelease kernelversion
-
-config-targets := 0
-mixed-targets := 0
-dot-config := 1
-
-ifneq ($(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 %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
- $(Q)$(MAKE) $(build)=$(@)
-
-# 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 ($(dot-config),1)
-# Read in config
--include include/config/auto.conf
-
-ifeq ($(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/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
- $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
-else
-# external modules needs include/linux/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/linux/autoconf.h -a -e $@ || ( \
- echo; \
- echo " ERROR: Kernel configuration is invalid."; \
- echo " include/linux/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 vmlinux but it is usually overridden in the arch makefile
-all: vmlinux
-
-ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
-CFLAGS += -Os
-else
-CFLAGS += -O2
-endif
-
-include $(srctree)/arch/$(ARCH)/Makefile
-
-ifdef CONFIG_FRAME_POINTER
-CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
-else
-CFLAGS += -fomit-frame-pointer
-endif
-
-ifdef CONFIG_UNWIND_INFO
-CFLAGS += -fasynchronous-unwind-tables
-endif
-
-ifdef CONFIG_DEBUG_INFO
-CFLAGS += -g
-endif
-
-# Force gcc to behave correct even for buggy distributions
-CFLAGS += $(call cc-option, -fno-stack-protector)
-
-# 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
-CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
-
-# disable pointer signed / unsigned warnings in gcc 4.0
-CFLAGS += $(call cc-option,-Wno-pointer-sign,)
-
-# Default kernel image to build when no specific target is given.
-# KBUILD_IMAGE may be overruled on the command line or
-# set in the environment
-# Also any assignments in arch/$(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) $(vmlinux-main)
-vmlinux-lds := arch/$(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; \
- 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
-
-# vmlinux image - including updated kernel symbols
-vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
- $(call if_changed_rule,vmlinux__)
- $(Q)rm -f .old_version
-
-# The actual objects are generated when descending,
-# make sure no implicit rule kicks in
-$(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) $(build)=$@
-
-# Build the kernel release string
-# The KERNELRELEASE is stored in a file named include/config/kernel.release
-# to be used when executing for example make install or make modules_install
-#
-# Take the contents of any files called localversion* and the config
-# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
-# LOCALVERSION from the command line override all of this
-
-nullstring :=
-space := $(nullstring) # end of line
-
-___localver = $(objtree)/localversion* $(srctree)/localversion*
-__localver = $(sort $(wildcard $(___localver)))
-# skip backup files (containing '~')
-_localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
-
-localver = $(subst $(space),, \
- $(shell cat /dev/null $(_localver)) \
- $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
-
-# If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
-# and if the SCM is know a tag from the SCM is appended.
-# The appended tag is determined by the SCM used.
-#
-# Currently, only git is supported.
-# Other SCMs can edit scripts/setlocalversion and add the appropriate
-# checks as needed.
-ifdef CONFIG_LOCALVERSION_AUTO
- _localver-auto = $(shell $(CONFIG_SHELL) \
- $(srctree)/scripts/setlocalversion $(srctree))
- localver-auto = $(LOCALVERSION)$(_localver-auto)