1177 lines
39 KiB
Makefile
1177 lines
39 KiB
Makefile
VERSION = 2015
|
|
PATCHLEVEL = 02
|
|
SUBLEVEL = 0
|
|
EXTRAVERSION =
|
|
NAME = None
|
|
|
|
# *DOCUMENTATION*
|
|
# To see a list of typical targets execute "make help"
|
|
# More info can be located in ./README
|
|
# Comments in this file are targeted only to the developer, do not
|
|
# expect to learn how to build the kernel reading this file.
|
|
|
|
# Do not:
|
|
# o use make's built-in rules and variables
|
|
# (this increases performance and avoids hard-to-debug behaviour);
|
|
# o print "Entering directory ...";
|
|
MAKEFLAGS += -rR --no-print-directory
|
|
|
|
# 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 barebox), 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 = $(V)
|
|
endif
|
|
endif
|
|
ifndef KBUILD_VERBOSE
|
|
KBUILD_VERBOSE = 0
|
|
endif
|
|
|
|
# Call a source code checker (by default, "sparse") as part of the
|
|
# C compilation.
|
|
#
|
|
# Use 'make C=1' to enable checking of only re-compiled files.
|
|
# Use 'make C=2' to enable checking of *all* source files, regardless
|
|
# of whether they are re-compiled or not.
|
|
#
|
|
# See the file "Documentation/sparse.txt" for more details, including
|
|
# where to get the "sparse" utility.
|
|
|
|
ifdef C
|
|
ifeq ("$(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 mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
|
|
&& /bin/pwd)
|
|
$(if $(KBUILD_OUTPUT),, \
|
|
$(error failed to create output directory "$(saved-output)"))
|
|
|
|
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
|
|
_all: all
|
|
|
|
# CDPATH can have sideeffects; disable, since we do know where we want to cd to
|
|
export CDPATH=
|
|
|
|
srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
|
|
objtree := $(CURDIR)
|
|
src := $(srctree)
|
|
obj := $(objtree)
|
|
|
|
VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
|
|
|
|
export srctree objtree VPATH
|
|
|
|
# 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
|
|
|
|
ARCH ?= sandbox
|
|
CROSS_COMPILE ?=
|
|
|
|
# Architecture as present in compile.h
|
|
UTS_MACHINE := $(ARCH)
|
|
SRCARCH := $(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
|
|
|
|
export KBUILD_MODULES KBUILD_BUILTIN
|
|
export KBUILD_CHECKSRC KBUILD_SRC
|
|
|
|
# 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
|
|
include $(srctree)/scripts/Makefile.lib
|
|
|
|
# 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)
|
|
CFLAGS_KERNEL =
|
|
AFLAGS_KERNEL =
|
|
|
|
LDFLAGS_MODULE = -T common/module.lds
|
|
|
|
# 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 $(KBUILD_EXTMOD))/).tmp_versions
|
|
|
|
# Use LINUXINCLUDE when you must reference the include/ directory.
|
|
# Needed to be compatible with the O= option
|
|
LINUXINCLUDE := -Iinclude -I$(srctree)/dts/include \
|
|
$(if $(KBUILD_SRC), -I$(srctree)/include) \
|
|
-I$(srctree)/arch/$(ARCH)/include \
|
|
-I$(objtree)/arch/$(ARCH)/include \
|
|
-include $(srctree)/include/linux/kconfig.h
|
|
|
|
CPPFLAGS := -D__KERNEL__ -D__BAREBOX__ $(LINUXINCLUDE) -fno-builtin -ffreestanding
|
|
|
|
CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
|
|
-Werror-implicit-function-declaration \
|
|
-fno-strict-aliasing -fno-common -Os -pipe
|
|
AFLAGS := -D__ASSEMBLY__
|
|
|
|
LDFLAGS_barebox := -Map barebox.map
|
|
|
|
# Read KERNELRELEASE from include/config/kernel.release (if it exists)
|
|
KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
|
|
KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
|
|
|
|
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
|
|
export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
|
|
export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
|
|
export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
|
|
|
|
export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
|
|
export CFLAGS CFLAGS_KERNEL
|
|
export AFLAGS AFLAGS_KERNEL
|
|
|
|
# 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) $(PATCHLEVEL)
|
|
endif
|
|
|
|
# To make sure we do not include .config for any of the *config targets
|
|
# catch them early, and hand them over to scripts/kconfig/Makefile
|
|
# It is allowed to specify more targets when calling make, including
|
|
# mixing *config targets and build targets.
|
|
# For example 'make oldconfig all'.
|
|
# Detect when mixed targets is specified, and make a second invocation
|
|
# of make so .config is not included in this case either (for *config).
|
|
|
|
no-dot-config-targets := clean mrproper distclean \
|
|
cscope TAGS tags help %docs check% \
|
|
include/generated/version.h headers_% \
|
|
kernelrelease kernelversion
|
|
|
|
config-targets := 0
|
|
mixed-targets := 0
|
|
dot-config := 1
|
|
|
|
ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
|
|
ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
|
|
dot-config := 0
|
|
endif
|
|
endif
|
|
|
|
ifneq ($(filter config %config,$(MAKECMDGOALS)),)
|
|
config-targets := 1
|
|
ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
|
|
mixed-targets := 1
|
|
endif
|
|
endif
|
|
|
|
ifeq ($(mixed-targets),1)
|
|
# ===========================================================================
|
|
# We're called with mixed targets (*config and build targets).
|
|
# Handle them one by one.
|
|
|
|
%:: 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)mkdir -p include/linux include/config
|
|
$(Q)$(MAKE) $(build)=scripts/kconfig $@
|
|
|
|
%config: scripts_basic outputmakefile FORCE
|
|
$(Q)mkdir -p include/linux include/config
|
|
$(Q)$(MAKE) $(build)=scripts/kconfig $@
|
|
|
|
else
|
|
# ===========================================================================
|
|
# Build targets only - this includes barebox, arch specific targets, clean
|
|
# targets and others. In general all targets except *config targets.
|
|
|
|
# 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 barebox / subdirs we need to visit
|
|
common-y := common/ drivers/ commands/ lib/ crypto/ net/ fs/
|
|
|
|
ifeq ($(dot-config),1)
|
|
# Read in config
|
|
-include include/config/auto.conf
|
|
|
|
# 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
|
|
# Dummy target needed, because used as prerequisite
|
|
include/config/auto.conf: ;
|
|
endif # $(dot-config)
|
|
|
|
include $(srctree)/arch/$(ARCH)/Makefile
|
|
|
|
ifdef CONFIG_DEBUG_INFO
|
|
CFLAGS += -g
|
|
endif
|
|
|
|
# Force gcc to behave correct even for buggy distributions
|
|
CFLAGS += $(call cc-option, -fno-stack-protector)
|
|
|
|
# This warning generated too much noise in a regular build.
|
|
# Use make W=1 to enable this warning (see scripts/Makefile.build)
|
|
CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
|
|
|
|
CFLAGS += $(call cc-disable-warning, trampolines)
|
|
|
|
# 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 += $(call cc-option,-Wno-pointer-sign,)
|
|
|
|
# KBUILD_IMAGE: Default barebox image to build
|
|
# Depending on the architecture, this can be either compressed or not.
|
|
# It will also include any necessary headers to be bootable.
|
|
export KBUILD_IMAGE ?= barebox.bin
|
|
# KBUILD_BINARY: Raw barebox binary
|
|
# This variable is set in case the architecture prepends a header and
|
|
# points to a binary that can be loaded directly into RAM and executed.
|
|
export KBUILD_BINARY ?= barebox.bin
|
|
# KBUILD_IMAGE and _BINARY may be overruled on the command line or
|
|
# set in the environment.
|
|
# Also any assignments in arch/$(ARCH)/Makefile take precedence over
|
|
# the default value.
|
|
|
|
barebox-flash-image: $(KBUILD_IMAGE) FORCE
|
|
$(call if_changed,ln)
|
|
|
|
images: barebox.bin FORCE
|
|
$(Q)$(MAKE) $(build)=images $@
|
|
images/%.s: barebox.bin FORCE
|
|
$(Q)$(MAKE) $(build)=images $@
|
|
|
|
ifdef CONFIG_PBL_MULTI_IMAGES
|
|
all: $(KBUILD_DTBS) barebox.bin images
|
|
else
|
|
all: barebox-flash-image $(KBUILD_DTBS)
|
|
endif
|
|
|
|
common-$(CONFIG_PBL_IMAGE) += pbl/
|
|
common-$(CONFIG_DEFAULT_ENVIRONMENT) += defaultenv/
|
|
|
|
barebox-dirs := $(patsubst %/,%,$(filter %/, $(common-y)))
|
|
|
|
barebox-alldirs := $(sort $(barebox-dirs) $(patsubst %/,%,$(filter %/, \
|
|
$(common-n) $(common-) \
|
|
$(core-n) $(core-) $(drivers-n) $(drivers-) \
|
|
$(net-n) $(net-) $(libs-n) $(libs-))))
|
|
|
|
pbl-common-y := $(patsubst %/, %/built-in-pbl.o, $(common-y))
|
|
common-y := $(patsubst %/, %/built-in.o, $(common-y))
|
|
|
|
ifeq ($(CONFIG_DEFAULT_COMPRESSION_GZIP),y)
|
|
DEFAULT_COMPRESSION_SUFFIX := .gz
|
|
endif
|
|
ifeq ($(CONFIG_DEFAULT_COMPRESSED_BZIP2),y)
|
|
DEFAULT_COMPRESSION_SUFFIX := .bz2
|
|
endif
|
|
ifeq ($(CONFIG_DEFAULT_COMPRESSION_LZO),y)
|
|
DEFAULT_COMPRESSION_SUFFIX := .lzo
|
|
endif
|
|
ifeq ($(CONFIG_DEFAULT_COMPRESSION_LZ4),y)
|
|
DEFAULT_COMPRESSION_SUFFIX := .lz4
|
|
endif
|
|
ifeq ($(CONFIG_DEFAULT_COMPRESSION_NONE),y)
|
|
DEFAULT_COMPRESSION_SUFFIX :=
|
|
endif
|
|
export DEFAULT_COMPRESSION_SUFFIX
|
|
|
|
# Build barebox
|
|
# ---------------------------------------------------------------------------
|
|
# barebox is built from the objects selected by $(barebox-init) and
|
|
# $(barebox-main). Most are built-in.o files from top-level directories
|
|
# in the kernel tree, others are specified in arch/$(ARCH)Makefile.
|
|
# Ordering when linking is important, and $(barebox-init) must be first.
|
|
#
|
|
# FIXME: This picture is wrong for barebox. We have no init, driver, mm
|
|
#
|
|
# barebox
|
|
# ^
|
|
# |
|
|
# +-< $(barebox-init)
|
|
# | +--< init/version.o + more
|
|
# |
|
|
# +--< $(barebox-main)
|
|
# | +--< driver/built-in.o mm/built-in.o + more
|
|
# |
|
|
# +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
|
|
#
|
|
# barebox version cannot be updated during normal
|
|
# descending-into-subdirs phase since we do not yet know if we need to
|
|
# update barebox.
|
|
#
|
|
# System.map is generated to document addresses of all kernel symbols
|
|
|
|
barebox-common := $(common-y)
|
|
barebox-pbl-common := $(pbl-common-y)
|
|
export barebox-pbl-common
|
|
barebox-all := $(barebox-common)
|
|
barebox-lds := $(lds-y)
|
|
|
|
# Rule to link barebox
|
|
# May be overridden by arch/$(ARCH)/Makefile
|
|
quiet_cmd_barebox__ ?= LD $@
|
|
cmd_barebox__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \
|
|
-T $(barebox-lds) \
|
|
--start-group $(barebox-common) --end-group \
|
|
$(filter-out $(barebox-lds) $(barebox-common) FORCE ,$^)
|
|
|
|
# Generate new barebox version
|
|
quiet_cmd_barebox_version = GEN .version
|
|
cmd_barebox_version = set -e; \
|
|
if [ ! -r .version ]; then \
|
|
rm -f .version; \
|
|
echo 1 >.version; \
|
|
else \
|
|
mv .version .old_version; \
|
|
expr 0$$(cat .old_version) + 1 >.version; \
|
|
fi; \
|
|
$(MAKE) $(build)=common
|
|
|
|
# Generate System.map
|
|
quiet_cmd_sysmap = SYSMAP
|
|
cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
|
|
|
|
# Link of barebox
|
|
# If CONFIG_KALLSYMS is set .version is already updated
|
|
# Generate System.map and verify that the content is consistent
|
|
# Use + in front of the barebox_version rule to silent warning with make -j2
|
|
# First command is ':' to allow us to use + in front of the rule
|
|
define rule_barebox__
|
|
:
|
|
$(if $(CONFIG_KALLSYMS),,+$(call cmd,barebox_version))
|
|
$(call cmd,barebox__)
|
|
|
|
$(Q)echo 'cmd_$@ := $(cmd_barebox__)' > $(@D)/.$(@F).cmd
|
|
|
|
$(Q)$(if $($(quiet)cmd_sysmap), \
|
|
echo ' $($(quiet)cmd_sysmap) System.map' &&) \
|
|
$(cmd_sysmap) $@ System.map; \
|
|
if [ $$? -ne 0 ]; then \
|
|
rm -f $@; \
|
|
false; \
|
|
fi;
|
|
endef
|
|
|
|
ifdef CONFIG_KALLSYMS
|
|
# Generate section listing all symbols and add it into barebox $(kallsyms.o)
|
|
# It's a three stage process:
|
|
# o .tmp_barebox1 has all symbols and sections, but __kallsyms is
|
|
# empty
|
|
# Running kallsyms on that gives us .tmp_kallsyms1.o with
|
|
# the right size - barebox version is updated during this step
|
|
# o .tmp_barebox2 now has a __kallsyms section of the right size,
|
|
# but due to the added section, some addresses have shifted.
|
|
# From here, we generate a correct .tmp_kallsyms2.o
|
|
# o The correct .tmp_kallsyms2.o is linked into the final barebox.
|
|
# o Verify that the System.map from barebox matches the map from
|
|
# .tmp_barebox2, just in case we did not generate kallsyms correctly.
|
|
# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
|
|
# .tmp_barebox3 and .tmp_kallsyms3.o. This is only meant as a
|
|
# temporary bypass to allow the kernel to be built while the
|
|
# maintainers work out what went wrong with kallsyms.
|
|
|
|
ifdef CONFIG_KALLSYMS_EXTRA_PASS
|
|
last_kallsyms := 3
|
|
else
|
|
last_kallsyms := 2
|
|
endif
|
|
|
|
kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
|
|
|
|
define verify_kallsyms
|
|
$(Q)$(if $($(quiet)cmd_sysmap), \
|
|
echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
|
|
$(cmd_sysmap) .tmp_barebox$(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* ; false )
|
|
endef
|
|
|
|
# Update barebox 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 = $(cmd_barebox__)
|
|
define rule_ksym_ld
|
|
:
|
|
+$(call cmd,barebox_version)
|
|
$(call cmd,barebox__)
|
|
$(Q)echo 'cmd_$@ := $(cmd_barebox__)' > $(@D)/.$(@F).cmd
|
|
endef
|
|
|
|
# Generate .S file with all kernel symbols
|
|
quiet_cmd_kallsyms = KSYM $@
|
|
cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) --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_barebox% $(KALLSYMS)
|
|
$(call cmd,kallsyms)
|
|
|
|
# .tmp_barebox1 must be complete except kallsyms, so update barebox version
|
|
.tmp_barebox1: $(barebox-lds) $(barebox-all) FORCE
|
|
$(call if_changed_rule,ksym_ld)
|
|
|
|
.tmp_barebox2: $(barebox-lds) $(barebox-all) .tmp_kallsyms1.o FORCE
|
|
$(call if_changed,barebox__)
|
|
|
|
.tmp_barebox3: $(barebox-lds) $(barebox-all) .tmp_kallsyms2.o FORCE
|
|
$(call if_changed,barebox__)
|
|
|
|
# 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_barebox% FORCE
|
|
($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
|
|
|
|
.tmp_map3: .tmp_map2
|
|
|
|
.tmp_map2: .tmp_map1
|
|
|
|
endif # ifdef CONFIG_KALLSYMS
|
|
|
|
# Do modpost on a prelinked vmlinux. The finally linked vmlinux has
|
|
# relevant sections renamed as per the linker script.
|
|
quiet_cmd_barebox-modpost = LD $@
|
|
cmd_barebox-modpost = $(LD) $(LDFLAGS) -r -o $@ \
|
|
$(vmlinux-init) --start-group $(barebox-main) --end-group \
|
|
$(filter-out $(barebox-init) $(barebox-main) $(barebox-lds) FORCE ,$^)
|
|
define rule_barebox-modpost
|
|
:
|
|
+$(call cmd,barebox-modpost)
|
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
|
|
$(Q)echo 'cmd_$@ := $(cmd_barebox-modpost)' > $(dot-target).cmd
|
|
endef
|
|
|
|
OBJCOPYFLAGS_barebox.bin = -O binary
|
|
|
|
barebox.bin: barebox FORCE
|
|
$(call if_changed,objcopy)
|
|
ifndef CONFIG_PBL_IMAGE
|
|
$(call cmd,check_file_size,$(CONFIG_BAREBOX_MAX_IMAGE_SIZE))
|
|
endif
|
|
|
|
# By default the uImage load address is 2MB below CONFIG_TEXT_BASE,
|
|
# leaving space for the compressed PBL image at 1MB below CONFIG_TEXT_BASE.
|
|
UIMAGE_BASE ?= $(shell printf "0x%08x" $$(($(CONFIG_TEXT_BASE) - 0x200000)))
|
|
|
|
# For development provide a target which makes barebox loadable by an
|
|
# unmodified u-boot
|
|
quiet_cmd_barebox_mkimage = MKIMAGE $@
|
|
cmd_barebox_mkimage = $(srctree)/scripts/mkimage -A $(ARCH) -T firmware -C none \
|
|
-O barebox -a $(UIMAGE_BASE) -e $(UIMAGE_BASE) \
|
|
-n "barebox $(KERNELRELEASE)" -d $< $@
|
|
|
|
# barebox.uimage is build from the raw barebox binary, without any other
|
|
# headers.
|
|
barebox.uimage: $(KBUILD_BINARY) FORCE
|
|
$(call if_changed,barebox_mkimage)
|
|
|
|
ifdef CONFIG_X86
|
|
barebox.S barebox.s: barebox
|
|
ifdef CONFIG_X86_HDBOOT
|
|
@echo "-------------------------------------------------" > barebox.S
|
|
@echo " * MBR content" >> barebox.S
|
|
$(Q)$(OBJDUMP) -j .bootsector -mi8086 -d barebox >> barebox.S
|
|
@echo "-------------------------------------------------" >> barebox.S
|
|
@echo " * Boot loader content" >> barebox.S
|
|
$(Q)$(OBJDUMP) -j .bootstrapping -mi8086 -d barebox >> barebox.S
|
|
endif
|
|
@echo "-------------------------------------------------" >> barebox.S
|
|
@echo " * Regular Text content" >> barebox.S
|
|
$(Q)$(OBJDUMP) -j .text -d barebox >> barebox.S
|
|
@echo "-------------------------------------------------" >> barebox.S
|
|
@echo " * Regular Data content" >> barebox.S
|
|
$(Q)$(OBJDUMP) -j .data -d barebox >> barebox.S
|
|
@echo "-------------------------------------------------" >> barebox.S
|
|
@echo " * Commands content" >> barebox.S
|
|
$(Q)$(OBJDUMP) -j .barebox_cmd -d barebox >> barebox.S
|
|
@echo "-------------------------------------------------" >> barebox.S
|
|
@echo " * Init Calls content" >> barebox.S
|
|
$(Q)$(OBJDUMP) -j .barebox_initcalls -d barebox >> barebox.S
|
|
else
|
|
barebox.S barebox.s: barebox FORCE
|
|
$(call if_changed,disasm)
|
|
endif
|
|
|
|
# barebox image
|
|
barebox: $(barebox-lds) $(barebox-head) $(barebox-common) $(kallsyms.o) FORCE
|
|
$(call barebox-modpost)
|
|
$(call if_changed_rule,barebox__)
|
|
$(Q)rm -f .old_version
|
|
|
|
barebox.srec: barebox
|
|
$(OBJCOPY) -O srec $< $@
|
|
|
|
# The actual objects are generated when descending,
|
|
# make sure no implicit rule kicks in
|
|
$(sort $(barebox-head) $(barebox-common) ) $(barebox-lds) $(barebox-pbl-common): $(barebox-dirs) ;
|
|
|
|
# Handle descending into subdirectories listed in $(barebox-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 += $(barebox-dirs)
|
|
$(barebox-dirs): prepare scripts
|
|
$(Q)$(MAKE) $(build)=$@
|
|
|
|
# Store (new) KERNELRELASE string in include/config/kernel.release
|
|
localversion = $(shell $(srctree)/scripts/setlocalversion $(srctree))
|
|
include/config/kernel.release: include/config/auto.conf FORCE
|
|
$(Q)rm -f $@
|
|
$(Q)echo $(KERNELVERSION)$(localversion) > $@
|
|
|
|
# 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
|
|
|
|
# prepare-all is deprecated, use prepare as valid replacement
|
|
PHONY += prepare-all
|
|
|
|
# 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),)
|
|
@echo ' Using $(srctree) as source for kernel'
|
|
$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
|
|
echo " $(srctree) is not clean, please run 'make mrproper'";\
|
|
echo " in the '$(srctree)' directory.";\
|
|
false; \
|
|
fi;
|
|
endif
|
|
|
|
# prepare2 creates a makefile if using a separate output directory
|
|
prepare2: prepare3 outputmakefile
|
|
|
|
prepare1: prepare2 include/generated/version.h include/generated/utsrelease.h \
|
|
include/config.h include/config/auto.conf
|
|
|
|
ifneq ($(KBUILD_MODULES),)
|
|
$(Q)mkdir -p $(MODVERDIR)
|
|
$(Q)rm -f $(MODVERDIR)/*
|
|
endif
|
|
|
|
archprepare: prepare1 scripts_basic
|
|
|
|
prepare0: archprepare FORCE
|
|
$(Q)$(MAKE) $(build)=.
|
|
|
|
# All the preparing..
|
|
prepare prepare-all: prepare0
|
|
|
|
# Leave this as default for preprocessing barebox.lds.S, which is now
|
|
# done in arch/$(ARCH)/kernel/Makefile
|
|
|
|
export CPPFLAGS_barebox.lds += -C -U$(ARCH)
|
|
|
|
define symlink-config-h
|
|
if [ -f $(srctree)/$(BOARD)/config.h ]; then \
|
|
$(kecho) ' SYMLINK $@ -> $(BOARD)/config.h'; \
|
|
ln -fsn $(srctree)/$(BOARD)/config.h $@; \
|
|
else \
|
|
[ -h $@ ] && rm -f $@; \
|
|
$(kecho) ' CREATE $@'; \
|
|
touch -a $@; \
|
|
fi
|
|
endef
|
|
|
|
include/config.h: include/config/auto.conf
|
|
$(Q)$(symlink-config-h)
|
|
|
|
# Generate some files
|
|
# ---------------------------------------------------------------------------
|
|
|
|
# KERNELRELEASE can change from a few different places, meaning version.h
|
|
# needs to be updated, so this check is forced on all builds
|
|
|
|
uts_len := 64
|
|
define filechk_utsrelease.h
|
|
if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
|
|
echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
|
|
exit 1; \
|
|
fi; \
|
|
(echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
|
|
endef
|
|
|
|
define filechk_version.h
|
|
(echo \#define LINUX_VERSION_CODE $(shell \
|
|
expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \
|
|
echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
|
|
endef
|
|
|
|
include/generated/version.h: $(srctree)/Makefile FORCE
|
|
$(call filechk,version.h)
|
|
|
|
include/generated/utsrelease.h: include/config/kernel.release FORCE
|
|
$(call filechk,utsrelease.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: $(barebox-dirs) $(if $(KBUILD_BUILTIN),barebox)
|
|
@$(kecho) ' Building modules, stage 2.';
|
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
|
|
|
|
|
|
# Target to prepare building external modules
|
|
PHONY += modules_prepare
|
|
modules_prepare: prepare scripts
|
|
|
|
# Target to install modules
|
|
PHONY += modules_install
|
|
modules_install: _modinst_ _modinst_post
|
|
|
|
PHONY += _modinst_
|
|
_modinst_:
|
|
@if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
|
|
echo "Warning: you may need to install module-init-tools"; \
|
|
echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
|
|
sleep 1; \
|
|
fi
|
|
@rm -rf $(MODLIB)/kernel
|
|
@rm -f $(MODLIB)/source
|
|
@mkdir -p $(MODLIB)/kernel
|
|
@ln -s $(srctree) $(MODLIB)/source
|
|
@if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
|
|
rm -f $(MODLIB)/build ; \
|
|
ln -s $(objtree) $(MODLIB)/build ; \
|
|
fi
|
|
$(Q)$(MAKE) -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
|
|
|
|
###
|
|
# 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 += barebox System.map include/generated/barebox_default_env.h \
|
|
.tmp_version .tmp_barebox* barebox.bin barebox.map barebox.S \
|
|
.tmp_kallsyms* common/barebox_default_env* barebox.ldr \
|
|
scripts/bareboxenv-target barebox-flash-image \
|
|
barebox.srec barebox.s5p barebox.ubl barebox.zynq \
|
|
barebox.uimage barebox.spi barebox.kwb barebox.kwbuart \
|
|
barebox.efi barebox.canon-a1100.bin
|
|
|
|
# Directories & files removed with 'make mrproper'
|
|
MRPROPER_DIRS += include/config usr/include include/generated
|
|
MRPROPER_FILES += .config .config.old .version .old_version \
|
|
include/config.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 := $(addprefix _clean_,$(srctree) $(barebox-alldirs))
|
|
|
|
PHONY += $(clean-dirs) clean archclean
|
|
$(clean-dirs):
|
|
$(Q)$(MAKE) $(clean)=images
|
|
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
|
|
|
|
clean: archclean $(clean-dirs)
|
|
$(call cmd,rmdirs)
|
|
$(call cmd,rmfiles)
|
|
@find . $(RCS_FIND_IGNORE) \
|
|
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
|
|
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
|
|
-o -name '*.symtypes' -o -name '*.bbenv.*' -o -name "*.bbenv" \) \
|
|
-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_,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
|
|
|
|
%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 $(srctree)/arch/$(ARCH)/configs/*_defconfig)
|
|
boards := $(notdir $(boards))
|
|
|
|
help:
|
|
@echo 'Cleaning targets:'
|
|
@echo ' clean - Remove most generated files but keep the config and'
|
|
@echo ' enough build support to build external modules'
|
|
@echo ' mrproper - Remove all generated files + config + various backup files'
|
|
@echo ' distclean - mrproper + remove editor backup and patch files'
|
|
@echo ' docs - build documentation'
|
|
@echo ''
|
|
@echo 'Configuration targets:'
|
|
@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
|
|
@echo ''
|
|
@echo 'Other generic targets:'
|
|
@echo ' all - Build all targets marked with [*]'
|
|
@echo '* barebox - Build the bare kernel'
|
|
@echo ' dir/ - Build all files in dir and below'
|
|
@echo ' dir/file.[ois] - Build specified target only'
|
|
@echo ' dir/file.ko - Build module including final link'
|
|
@echo ' tags/TAGS - Generate tags file for editors'
|
|
@echo ' cscope - Generate cscope index'
|
|
@echo ' (default: $(INSTALL_HDR_PATH))'
|
|
@echo ''
|
|
@echo 'Static analysers'
|
|
@echo ' checkstack - Generate a list of stack hogs'
|
|
@echo ' namespacecheck - Name space analysis on compiled kernel'
|
|
@if [ -r include/asm-$(ARCH)/Kbuild ]; then \
|
|
echo ' headers_check - Sanity check on exported headers'; \
|
|
fi
|
|
@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 V=2 [targets] 2 => give reason for rebuild of target'
|
|
@echo ' make O=dir [targets] Locate all output files in "dir", including .config'
|
|
@echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
|
|
@echo ' make C=2 [targets] Force check of all c source with $$CHECK'
|
|
@echo ''
|
|
@echo 'Execute "make" or "make all" to build all targets marked with [*] '
|
|
@echo 'For further info see the ./README file'
|
|
|
|
# Generate tags for editors
|
|
# ---------------------------------------------------------------------------
|
|
quiet_cmd_tags = GEN $@
|
|
cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
|
|
|
|
tags TAGS cscope: FORCE
|
|
$(call cmd,tags)
|
|
|
|
SPHINXBUILD = sphinx-build
|
|
ALLSPHINXOPTS = source
|
|
|
|
docs: FORCE
|
|
@mkdir -p $(srctree)/Documentation/commands
|
|
@$(srctree)/Documentation/gen_commands.py $(srctree) $(srctree)/Documentation/commands
|
|
@$(SPHINXBUILD) -b html -d $(objtree)/doctrees $(srctree)/Documentation \
|
|
$(objtree)/Documentation/html
|
|
|
|
endif #ifeq ($(config-targets),1)
|
|
endif #ifeq ($(mixed-targets),1)
|
|
|
|
# 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
|
|
|
|
build-dir = $(patsubst %/,%,$(dir $@))
|
|
target-dir = $(dir $@)
|
|
|
|
%.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
|
|
$(Q)$(MAKE) $(build)=$(build-dir)
|
|
%.ko: prepare scripts FORCE
|
|
$(Q)$(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 $(rm-files)
|
|
|
|
|
|
a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
|
|
$(NOSTDINC_FLAGS) $(CPPFLAGS) \
|
|
$(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
|
|
|
|
quiet_cmd_as_o_S = AS $@
|
|
cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
|
|
|
|
# read all saved command lines
|
|
|
|
targets := $(wildcard $(sort $(targets)))
|
|
cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
|
|
|
|
ifneq ($(cmd_files),)
|
|
$(cmd_files): ; # Do not try to update included dependency files
|
|
include $(cmd_files)
|
|
endif
|
|
|
|
# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
|
|
# Usage:
|
|
# $(Q)$(MAKE) $(clean)=dir
|
|
clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
|
|
|
|
endif # skip-makefile
|
|
|
|
PHONY += FORCE
|
|
FORCE:
|
|
|
|
# Cancel implicit rules on top Makefile, `-rR' will apply to sub-makes.
|
|
Makefile: ;
|
|
|
|
# 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)
|