File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..91dd783
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,1616 @@
+VERSION = 4
+PATCHLEVEL = 4
+SUBLEVEL = 100
+EXTRAVERSION =
+NAME = Blurry Fish Butt
+
+# *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.
+
+# o Do not use make's built-in rules and variables
+# (this increases performance and avoids hard-to-debug behaviour);
+# o Look for make include files relative to root of kernel src
+MAKEFLAGS += -rR --include-dir=$(CURDIR)
+
+# Avoid funny character set dependencies
+unexport LC_ALL
+LC_COLLATE=C
+LC_NUMERIC=C
+export LC_COLLATE LC_NUMERIC
+
+# Avoid interference with shell env settings
+unexport GREP_OPTIONS
+
+# 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.
+
+# 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 $@ :<
+#
+# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
+# If KBUILD_VERBOSE equals 1 then the above command is displayed.
+#
+# To put more focus on warnings, be less verbose as default
+# Use 'make V=1' to see the full commands
+
+ifeq ("$(origin V)", "command line")
+ KBUILD_VERBOSE = $(V)
+endif
+ifndef KBUILD_VERBOSE
+ KBUILD_VERBOSE = 0
+endif
+
+ifeq ($(KBUILD_VERBOSE),1)
+ quiet =
+ Q =
+else
+ quiet=quiet_
+ Q = @
+endif
+
+# If the user is running make -s (silent mode), suppress echoing of
+# commands
+
+ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
+ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
+ quiet=silent_
+endif
+else # make-3.8x
+ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
+ quiet=silent_
+endif
+endif
+
+export quiet Q KBUILD_VERBOSE
+
+# kbuild supports saving output files in a separate directory.
+# To locate output files in a separate directory two syntaxes are supported.
+# In both cases the working directory must be the root of the kernel src.
+# 1) O=
+# Use "make O=dir/to/store/output/files/"
+#
+# 2) Set KBUILD_OUTPUT
+# Set the environment variable KBUILD_OUTPUT to point to the directory
+# where the output files shall be placed.
+# export KBUILD_OUTPUT=dir/to/store/output/files/
+# make
+#
+# The O= assignment takes precedence over the KBUILD_OUTPUT environment
+# variable.
+
+# KBUILD_SRC is set on invocation of make in OBJ directory
+# KBUILD_SRC is not intended to be used by the regular user (for now)
+ifeq ($(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 ($(words $(subst :, ,$(CURDIR))), 1)
+ $(error main directory cannot contain spaces nor colons)
+endif
+
+ifneq ($(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 mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
+ && /bin/pwd)
+$(if $(KBUILD_OUTPUT),, \
+ $(error failed to create output directory "$(saved-output)"))
+
+PHONY += $(MAKECMDGOALS) sub-make
+
+$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
+ @:
+
+sub-make: FORCE
+ $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
+ -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 ($(skip-makefile),)
+
+# Do not print "Entering directory ...",
+# but we want to display it when entering to the output directory
+# so that IDEs/editors are able to understand relative filenames.
+MAKEFLAGS += --no-print-directory
+
+# Call a source code checker (by default, "sparse") as part of the
+# C compilation.
+#
+# Use 'make C=1' to enable checking of only re-compiled files.
+# Use 'make C=2' to enable checking of *all* source files, regardless
+# of whether they are re-compiled or not.
+#
+# See the file "Documentation/sparse.txt" for more details, including
+# where to get the "sparse" utility.
+
+ifeq ("$(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 := $(M)
+endif
+
+# If building an external module we do not care about the all: rule
+# but instead _all depend on modules
+PHONY += all
+ifeq ($(KBUILD_EXTMOD),)
+_all: all
+else
+_all: modules
+endif
+
+ifeq ($(KBUILD_SRC),)
+ # building in the source tree
+ srctree := .
+else
+ ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
+ # building in a subdirectory of the source tree
+ srctree := ..
+ else
+ srctree := $(KBUILD_SRC)
+ endif
+endif
+objtree := .
+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/x86/ -e s/x86_64/x86/ \
+ -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/ -e s/aarch64.*/arm64/ )
+
+# 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
+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
+
+# Additional ARCH settings for tile
+ifeq ($(ARCH),tilepro)
+ SRCARCH := tile
+endif
+ifeq ($(ARCH),tilegx)
+ SRCARCH := tile
+endif
+
+# Where to locate arch specific headers
+hdr-arch := $(SRCARCH)
+
+KCONFIG_CONFIG ?= .config
+export KCONFIG_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 -std=gnu89
+HOSTCXXFLAGS = -O2
+
+ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
+HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \
+ -Wno-missing-field-initializers -fno-delete-null-pointer-checks
+endif
+
+# Decide whether to build built-in, modular, or both.
+# Normally, just do built-in.
+
+KBUILD_MODULES :=
+KBUILD_BUILTIN := 1
+
+# If we have only "make modules", don't compile built-in objects.
+# When we're building modules with modversions, we need to consider
+# the built-in objects during the descend as well, in order to
+# make sure the checksums are up to date before we record them.
+
+ifeq ($(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
+
+# We need some generic definitions (do not try to remake the file).
+scripts/Kbuild.include: ;
+include 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
+PERL = perl
+PYTHON = python
+CHECK = sparse
+
+CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
+ -Wbitwise -Wno-return-void $(CF)
+CFLAGS_MODULE =
+AFLAGS_MODULE =
+LDFLAGS_MODULE =
+CFLAGS_KERNEL =
+AFLAGS_KERNEL =
+CFLAGS_GCOV = -fprofile-arcs -ftest-coverage -fno-tree-loop-im
+
+
+# Use USERINCLUDE when you must reference the UAPI directories only.
+USERINCLUDE := \
+ -I$(srctree)/arch/$(hdr-arch)/include/uapi \
+ -Iarch/$(hdr-arch)/include/generated/uapi \
+ -I$(srctree)/include/uapi \
+ -Iinclude/generated/uapi \
+ -include $(srctree)/include/linux/kconfig.h
+
+# Use LINUXINCLUDE when you must reference the include/ directory.
+# Needed to be compatible with the O= option
+LINUXINCLUDE := \
+ -I$(srctree)/arch/$(hdr-arch)/include \
+ -Iarch/$(hdr-arch)/include/generated/uapi \
+ -Iarch/$(hdr-arch)/include/generated \
+ $(if $(KBUILD_SRC), -I$(srctree)/include) \
+ -Iinclude \
+ $(USERINCLUDE)
+
+KBUILD_CPPFLAGS := -D__KERNEL__
+
+KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
+ -fno-strict-aliasing -fno-common \
+ -Werror-implicit-function-declaration \
+ -Wno-format-security \
+ -std=gnu89 $(call cc-option,-fno-PIE)
+
+
+KBUILD_AFLAGS_KERNEL :=
+KBUILD_CFLAGS_KERNEL :=
+KBUILD_AFLAGS := -D__ASSEMBLY__ $(call cc-option,-fno-PIE)
+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 = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(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 PYTHON 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 CFLAGS_KASAN
+export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
+export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
+export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
+export KBUILD_ARFLAGS
+
+# 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
+
+export 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
+
+# Support for using generic headers in asm-generic
+PHONY += asm-generic
+asm-generic:
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
+ src=asm obj=arch/$(SRCARCH)/include/generated/asm
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
+ src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
+
+# 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).
+
+version_h := include/generated/uapi/linux/version.h
+old_version_h := include/linux/version.h
+
+no-dot-config-targets := clean mrproper distclean \
+ cscope gtags TAGS tags help% %docs check% coccicheck \
+ $(version_h) headers_% archheaders archscripts \
+ kernelversion %src-pkg
+
+config-targets := 0
+mixed-targets := 0
+dot-config := 1
+
+ifneq ($(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 ($(words $(MAKECMDGOALS)),1)
+ mixed-targets := 1
+ endif
+ endif
+endif
+# install and module_install need also be processed one by one
+ifneq ($(filter install,$(MAKECMDGOALS)),)
+ ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
+ mixed-targets := 1
+ endif
+endif
+
+ifeq ($(mixed-targets),1)
+# ===========================================================================
+# We're called with mixed targets (*config and build targets).
+# Handle them one by one.
+
+PHONY += $(MAKECMDGOALS) __build_one_by_one
+
+$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
+ @:
+
+__build_one_by_one:
+ $(Q)set -e; \
+ for i in $(MAKECMDGOALS); do \
+ $(MAKE) -f $(srctree)/Makefile $$i; \
+ done
+
+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 arch/$(SRCARCH)/Makefile
+export KBUILD_DEFCONFIG KBUILD_KCONFIG
+
+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 parallel
+PHONY += scripts
+scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
+ asm-generic
+ $(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/
+virt-y := virt/
+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 >&2; \
+ echo >&2 " ERROR: Kernel configuration is invalid."; \
+ echo >&2 " include/generated/autoconf.h or $@ are missing.";\
+ echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
+ echo >&2 ; \
+ /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
+
+# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
+# values of the respective KBUILD_* variables
+ARCH_CPPFLAGS :=
+ARCH_AFLAGS :=
+ARCH_CFLAGS :=
+include arch/$(SRCARCH)/Makefile
+
+KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
+KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,)
+KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,)
+KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
+KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
+KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context)
+
+ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+KBUILD_CFLAGS += -Os
+else
+ifdef CONFIG_PROFILE_ALL_BRANCHES
+KBUILD_CFLAGS += -O2
+else
+KBUILD_CFLAGS += -O2
+endif
+endif
+
+# Tell gcc to never replace conditional load with a non-conditional one
+KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
+
+# check for 'asm goto'
+ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
+ KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
+ KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO
+endif
+
+ifdef CONFIG_READABLE_ASM
+# Disable optimizations that make assembler listings hard to read.
+# reorder blocks reorders the control in the function
+# ipa clone creates specialized cloned functions
+# partial inlining inlines only parts of functions
+KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
+ $(call cc-option,-fno-ipa-cp-clone,) \
+ $(call cc-option,-fno-partial-inlining)
+endif
+
+ifneq ($(CONFIG_FRAME_WARN),0)
+KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
+endif
+
+# Handle stack protector mode.
+#
+# Since kbuild can potentially perform two passes (first with the old
+# .config values and then with updated .config values), we cannot error out
+# if a desired compiler option is unsupported. If we were to error, kbuild
+# could never get to the second pass and actually notice that we changed
+# the option to something that was supported.
+#
+# Additionally, we don't want to fallback and/or silently change which compiler
+# flags will be used, since that leads to producing kernels with different
+# security feature characteristics depending on the compiler used. ("But I
+# selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!")
+#
+# The middle ground is to warn here so that the failed option is obvious, but
+# to let the build fail with bad compiler flags so that we can't produce a
+# kernel when there is a CONFIG and compiler mismatch.
+#
+ifdef CONFIG_CC_STACKPROTECTOR_REGULAR
+ stackp-flag := -fstack-protector
+ ifeq ($(call cc-option, $(stackp-flag)),)
+ $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \
+ -fstack-protector not supported by compiler)
+ endif
+else
+ifdef CONFIG_CC_STACKPROTECTOR_STRONG
+ stackp-flag := -fstack-protector-strong
+ ifeq ($(call cc-option, $(stackp-flag)),)
+ $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \
+ -fstack-protector-strong not supported by compiler)
+ endif
+else
+ # Force off for distro compilers that enable stack protector by default.
+ stackp-flag := $(call cc-option, -fno-stack-protector)
+endif
+endif
+KBUILD_CFLAGS += $(stackp-flag)
+
+ifeq ($(cc-name),clang)
+KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
+KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
+KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
+KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
+KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
+# Quiet clang warning: comparison of unsigned expression < 0 is always false
+KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
+# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
+# source of a reference will be _MergedGlobals and not on of the whitelisted names.
+# See modpost pattern 2
+KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
+KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
+else
+
+# These warnings generated too much noise in a regular build.
+# Use make W=1 to enable them (see scripts/Makefile.build)
+KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
+KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
+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
+
+KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments)
+
+ifdef CONFIG_DEBUG_INFO
+ifdef CONFIG_DEBUG_INFO_SPLIT
+KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g)
+else
+KBUILD_CFLAGS += -g
+endif
+KBUILD_AFLAGS += -Wa,-gdwarf-2
+endif
+ifdef CONFIG_DEBUG_INFO_DWARF4
+KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,)
+endif
+
+ifdef CONFIG_DEBUG_INFO_REDUCED
+KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
+ $(call cc-option,-fno-var-tracking)
+endif
+
+ifdef CONFIG_FUNCTION_TRACER
+ifndef CC_FLAGS_FTRACE
+CC_FLAGS_FTRACE := -pg
+endif
+export CC_FLAGS_FTRACE
+ifdef CONFIG_HAVE_FENTRY
+CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
+endif
+KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY)
+KBUILD_AFLAGS += $(CC_USING_FENTRY)
+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-disable-warning, 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)
+
+# disallow errors like 'EXPORT_GPL(foo);' with missing header
+KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
+
+# require functions to have arguments in prototypes, not empty 'int foo()'
+KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
+
+# Prohibit date/time macros, which would make the build non-deterministic
+KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
+
+# use the deterministic mode of AR if available
+KBUILD_ARFLAGS := $(call ar-option,D)
+
+include scripts/Makefile.kasan
+include scripts/Makefile.extrawarn
+
+# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the
+# last assignments
+KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
+KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS)
+KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS)
+
+# 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_DTBS_PATH specifies a prefix for relocations required by build roots.
+# Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as
+# an argument if needed. Otherwise it defaults to the kernel install path
+#
+export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE)
+
+#
+# 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 value will be 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
+
+# CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed
+# after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP
+# or CONFIG_MODULE_COMPRESS_XZ.
+
+mod_compress_cmd = true
+ifdef CONFIG_MODULE_COMPRESS
+ ifdef CONFIG_MODULE_COMPRESS_GZIP
+ mod_compress_cmd = gzip -n -f
+ endif # CONFIG_MODULE_COMPRESS_GZIP
+ ifdef CONFIG_MODULE_COMPRESS_XZ
+ mod_compress_cmd = xz -f
+ endif # CONFIG_MODULE_COMPRESS_XZ
+endif # CONFIG_MODULE_COMPRESS
+export mod_compress_cmd
+
+# Select initial ramdisk compression format, default is gzip(1).
+# This shall be used by the dracut(8) tool while creating an initramfs image.
+#
+INITRD_COMPRESS-y := gzip
+INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
+INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma
+INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz
+INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo
+INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4
+# do not export INITRD_COMPRESS, since we didn't actually
+# choose a sane default compression above.
+# export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
+
+ifdef CONFIG_MODULE_SIG_ALL
+$(eval $(call config_filename,MODULE_SIG_KEY))
+
+mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509
+else
+mod_sign_cmd = true
+endif
+export mod_sign_cmd
+
+
+ifeq ($(KBUILD_EXTMOD),)
+core-y += kernel/ certs/ 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) $(virt-y)))
+
+vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
+ $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-))))
+
+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)
+virt-y := $(patsubst %/, %/built-in.o, $(virt-y))
+
+# Externally visible symbols (used by link-vmlinux.sh)
+export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
+export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) $(virt-y)
+export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
+export LDFLAGS_vmlinux
+# used by scripts/pacmage/Makefile
+export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools)
+
+vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)
+
+# Final link of vmlinux
+ cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux)
+quiet_cmd_link-vmlinux = LINK $@
+
+# Include targets which we want to
+# execute if the rest of the kernel build went well.
+vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) 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
+ifdef CONFIG_GDB_SCRIPTS
+ $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py
+endif
+ +$(call if_changed,link-vmlinux)
+
+# The actual objects are generated when descending,
+# make sure no implicit rule kicks in
+$(sort $(vmlinux-deps)): $(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)=$@
+
+define filechk_kernel.release
+ echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
+endef
+
+# Store (new) KERNELRELEASE string in include/config/kernel.release
+include/config/kernel.release: include/config/auto.conf FORCE
+ $(call filechk,kernel.release)
+
+
+# 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 >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
+ echo >&2 " in the '$(srctree)' directory.";\
+ /bin/false; \
+ fi;
+endif
+
+# prepare2 creates a makefile if using a separate output directory
+prepare2: prepare3 outputmakefile asm-generic
+
+prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
+ include/config/auto.conf
+ $(cmd_crmodverdir)
+
+archprepare: archheaders archscripts prepare1 scripts_basic
+
+prepare0: archprepare FORCE
+ $(Q)$(MAKE) $(build)=.
+
+# All the preparing..
+prepare: prepare0
+
+# Generate some files
+# ---------------------------------------------------------------------------
+
+# KERNELRELEASE can change from a few different places, meaning version.h
+# needs to be updated, so this check is forced on all builds
+
+uts_len := 64
+define filechk_utsrelease.h
+ if [ `echo -n "$(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 $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
+ echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
+endef
+
+$(version_h): $(srctree)/Makefile FORCE
+ $(call filechk,version.h)
+ $(Q)rm -f $(old_version_h)
+
+include/generated/utsrelease.h: include/config/kernel.release FORCE
+ $(call filechk,utsrelease.h)
+
+PHONY += headerdep
+headerdep:
+ $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
+ $(srctree)/scripts/headerdep.pl -I$(srctree)/include
+
+# ---------------------------------------------------------------------------
+# 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 = $(objtree)/usr
+
+# If we do an all arch process set dst to asm-$(hdr-arch)
+hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
+
+PHONY += archheaders
+archheaders:
+
+PHONY += archscripts
+archscripts:
+
+PHONY += __headers
+__headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
+ $(Q)$(MAKE) $(build)=scripts build_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/uapi/asm/Kbuild),, \
+ $(error Headers not exportable for the $(SRCARCH) architecture))
+ $(Q)$(MAKE) $(hdr-inst)=include/uapi
+ $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/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/uapi HDRCHECK=1
+ $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
+
+# ---------------------------------------------------------------------------
+# Kernel selftest
+
+PHONY += kselftest
+kselftest:
+ $(Q)$(MAKE) -C tools/testing/selftests run_tests
+
+kselftest-clean:
+ $(Q)$(MAKE) -C tools/testing/selftests clean
+
+# ---------------------------------------------------------------------------
+# 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_:
+ @rm -rf $(MODLIB)/kernel
+ @rm -f $(MODLIB)/source
+ @mkdir -p $(MODLIB)/kernel
+ @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source
+ @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
+ rm -f $(MODLIB)/build ; \
+ ln -s $(CURDIR) $(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
+ $(call cmd,depmod)
+
+ifeq ($(CONFIG_MODULE_SIG), y)
+PHONY += modules_sign
+modules_sign:
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
+endif
+
+else # CONFIG_MODULES
+
+# Modules not configured
+# ---------------------------------------------------------------------------
+
+modules modules_install: FORCE
+ @echo >&2
+ @echo >&2 "The present kernel configuration has modules disabled."
+ @echo >&2 "Type 'make config' and enable loadable module support."
+ @echo >&2 "Then build a kernel with module support enabled."
+ @echo >&2
+ @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)
+
+# Directories & files removed with 'make mrproper'
+MRPROPER_DIRS += include/config usr/include include/generated \
+ arch/*/include/generated .tmp_objdiff
+MRPROPER_FILES += .config .config.old .version .old_version \
+ Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
+ signing_key.pem signing_key.priv signing_key.x509 \
+ x509.genkey extra_certificates signing_key.x509.keyid \
+ signing_key.x509.signer vmlinux-gdb.py
+
+# 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 samples)
+
+PHONY += $(clean-dirs) clean archclean vmlinuxclean
+$(clean-dirs):
+ $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
+
+vmlinuxclean:
+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
+
+clean: archclean vmlinuxclean
+
+# 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) \
+ \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
+ -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
+ -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \
+ -type f -print | xargs rm -f
+
+
+# Packaging of the kernel to various formats
+# ---------------------------------------------------------------------------
+# rpm target kept for backward compatibility
+package-dir := 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 := $(sort $(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.[ois] - 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 ' gtags - Generate GNU GLOBAL index'
+ @echo ' kernelrelease - Output the release version string (use with make -s)'
+ @echo ' kernelversion - Output the version stored in Makefile (use with make -s)'
+ @echo ' image_name - Output the image name (use with make -s)'
+ @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 selftest'
+ @echo ' kselftest - Build and run kernel selftest (run as root)'
+ @echo ' Build, install, and boot kernel before'
+ @echo ' running kselftest on it'
+ @echo ' kselftest-clean - Remove all generated kselftest files'
+ @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 ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
+ @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
+ @echo ' 1: warnings which may be relevant and do not occur too often'
+ @echo ' 2: warnings which occur quite often but may still be relevant'
+ @echo ' 3: more obscure warnings, can most likely be ignored'
+ @echo ' Multiple levels can be combined with W=12 or W=123'
+ @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 = $(sort $(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)=scripts build_docproc build_check-lc_ctype
+ $(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 $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
+ \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
+ -o -name '*.ko.*' \
+ -o -name '*.dwo' \
+ -o -name '*.su' \
+ -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
+ -o -name '*.symtypes' -o -name 'modules.order' \
+ -o -name modules.builtin -o -name '.tmp_*.o.*' \
+ -o -name '*.gcno' \) -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 gtags: FORCE
+ $(call cmd,tags)
+
+# Scripts to check various things for consistency
+# ---------------------------------------------------------------------------
+
+PHONY += includecheck versioncheck coccicheck namespacecheck export_report
+
+includecheck:
+ find $(srctree)/* $(RCS_FIND_IGNORE) \
+ -name '*.[hcS]' -type f -print | sort \
+ | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
+
+versioncheck:
+ find $(srctree)/* $(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 image_name
+
+# 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)
+
+image_name:
+ @echo $(KBUILD_IMAGE)
+
+# Clear a bunch of variables before executing the submake
+tools/: FORCE
+ $(Q)mkdir -p $(objtree)/tools
+ $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/
+
+tools/%: FORCE
+ $(Q)mkdir -p $(objtree)/tools
+ $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ $*
+
+# Single targets
+# ---------------------------------------------------------------------------
+# Single targets are compatible with:
+# - build with mixed source and output
+# - build with separate output dir 'make O=...'
+# - external modules
+#
+# target-dir => where to store outputfile
+# build-dir => directory in kernel source tree to use
+
+ifeq ($(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)
+# Make sure the latest headers are built for Documentation
+Documentation/: headers_install
+%/: 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 = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
+ $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
+
+# 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)/*)
+
+# 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
+
+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)