1343 lines
42 KiB
Makefile
1343 lines
42 KiB
Makefile
VERSION = 1
|
|
PATCHLEVEL = 22
|
|
SUBLEVEL = 0
|
|
EXTRAVERSION = .git
|
|
NAME = Unnamed
|
|
|
|
# *DOCUMENTATION*
|
|
# To see a list of typical targets execute "make help"
|
|
# More info can be located in ./README
|
|
# Comments in this file are targeted only to the developer, do not
|
|
# expect to learn how to build the kernel reading this file.
|
|
|
|
# Do not print "Entering directory ..."
|
|
MAKEFLAGS += --no-print-directory
|
|
|
|
# We are using a recursive build, so we need to do a little thinking
|
|
# to get the ordering right.
|
|
#
|
|
# Most importantly: sub-Makefiles should only ever modify files in
|
|
# their own directory. If in some directory we have a dependency on
|
|
# a file in another dir (which doesn't happen often, but it's often
|
|
# unavoidable when linking the built-in.o targets which finally
|
|
# turn into busybox), we will call a sub make in that other dir, and
|
|
# after that we are sure that everything which is in that other dir
|
|
# is now up to date.
|
|
#
|
|
# The only cases where we need to modify files which have global
|
|
# effects are thus separated out and done before the recursive
|
|
# descending is started. They are now explicitly listed as the
|
|
# prepare rule.
|
|
|
|
# To put more focus on warnings, be less verbose as default
|
|
# Use 'make V=1' to see the full commands
|
|
|
|
ifdef V
|
|
ifeq ("$(origin V)", "command line")
|
|
KBUILD_VERBOSE = $(V)
|
|
endif
|
|
endif
|
|
ifndef KBUILD_VERBOSE
|
|
KBUILD_VERBOSE = 0
|
|
endif
|
|
|
|
# Call sparse as part of compilation of C files
|
|
# Use 'make C=1' to enable sparse checking
|
|
|
|
ifdef C
|
|
ifeq ("$(origin C)", "command line")
|
|
KBUILD_CHECKSRC = $(C)
|
|
endif
|
|
endif
|
|
ifndef KBUILD_CHECKSRC
|
|
KBUILD_CHECKSRC = 0
|
|
endif
|
|
|
|
# Use make M=dir to specify directory of external module to build
|
|
# Old syntax make ... SUBDIRS=$PWD is still supported
|
|
# Setting the environment variable KBUILD_EXTMOD take precedence
|
|
ifdef SUBDIRS
|
|
KBUILD_EXTMOD ?= $(SUBDIRS)
|
|
endif
|
|
ifdef M
|
|
ifeq ("$(origin M)", "command line")
|
|
KBUILD_EXTMOD := $(M)
|
|
endif
|
|
endif
|
|
|
|
|
|
# kbuild supports saving output files in a separate directory.
|
|
# To locate output files in a separate directory two syntaxes are supported.
|
|
# In both cases the working directory must be the root of the kernel src.
|
|
# 1) O=
|
|
# Use "make O=dir/to/store/output/files/"
|
|
#
|
|
# 2) Set KBUILD_OUTPUT
|
|
# Set the environment variable KBUILD_OUTPUT to point to the directory
|
|
# where the output files shall be placed.
|
|
# export KBUILD_OUTPUT=dir/to/store/output/files/
|
|
# make
|
|
#
|
|
# The O= assignment takes precedence over the KBUILD_OUTPUT environment
|
|
# variable.
|
|
|
|
|
|
# KBUILD_SRC is set on invocation of make in OBJ directory
|
|
# KBUILD_SRC is not intended to be used by the regular user (for now)
|
|
ifeq ($(KBUILD_SRC),)
|
|
|
|
# OK, Make called in directory where kernel src resides
|
|
# Do we want to locate output files in a separate directory?
|
|
ifdef O
|
|
ifeq ("$(origin O)", "command line")
|
|
KBUILD_OUTPUT := $(O)
|
|
endif
|
|
endif
|
|
|
|
# That's our default target when none is given on the command line
|
|
PHONY := _all
|
|
_all:
|
|
|
|
ifneq ($(KBUILD_OUTPUT),)
|
|
# Invoke a second make in the output directory, passing relevant variables
|
|
# check that the output directory actually exists
|
|
saved-output := $(KBUILD_OUTPUT)
|
|
KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
|
|
$(if $(KBUILD_OUTPUT),, \
|
|
$(error output directory "$(saved-output)" does not exist))
|
|
|
|
PHONY += $(MAKECMDGOALS)
|
|
|
|
$(filter-out _all,$(MAKECMDGOALS)) _all:
|
|
$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
|
|
KBUILD_SRC=$(CURDIR) \
|
|
KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
|
|
|
|
# Leave processing to above invocation of make
|
|
skip-makefile := 1
|
|
endif # ifneq ($(KBUILD_OUTPUT),)
|
|
endif # ifeq ($(KBUILD_SRC),)
|
|
|
|
# We process the rest of the Makefile if this is the final invocation of make
|
|
ifeq ($(skip-makefile),)
|
|
|
|
# If building an external module we do not care about the all: rule
|
|
# but instead _all depend on modules
|
|
PHONY += all
|
|
ifeq ($(KBUILD_EXTMOD),)
|
|
_all: all
|
|
else
|
|
_all: modules
|
|
endif
|
|
|
|
srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
|
|
TOPDIR := $(srctree)
|
|
# FIXME - TOPDIR is obsolete, use srctree/objtree
|
|
objtree := $(CURDIR)
|
|
src := $(srctree)
|
|
obj := $(objtree)
|
|
|
|
VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
|
|
|
|
export srctree objtree VPATH TOPDIR
|
|
|
|
|
|
# Cross compiling and selecting different set of gcc/bin-utils
|
|
# ---------------------------------------------------------------------------
|
|
#
|
|
# When performing cross compilation for other architectures ARCH shall be set
|
|
# to the target architecture. (See arch/* for the possibilities).
|
|
# ARCH can be set during invocation of make:
|
|
# make ARCH=ia64
|
|
# Another way is to have ARCH set in the environment.
|
|
# The default ARCH is the host where make is executed.
|
|
|
|
# CROSS_COMPILE specify the prefix used for all executables used
|
|
# during compilation. Only gcc and related bin-utils executables
|
|
# are prefixed with $(CROSS_COMPILE).
|
|
# CROSS_COMPILE can be set on the command line
|
|
# make CROSS_COMPILE=ia64-linux-
|
|
# Alternatively CROSS_COMPILE can be set in the environment.
|
|
# Default value for CROSS_COMPILE is not to prefix executables
|
|
# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
|
|
|
|
CROSS_COMPILE ?=
|
|
# bbox: we may have CONFIG_CROSS_COMPILER_PREFIX in .config,
|
|
# and it has not been included yet... thus using an awkward syntax.
|
|
ifeq ($(CROSS_COMPILE),)
|
|
CROSS_COMPILE := $(shell grep ^CONFIG_CROSS_COMPILER_PREFIX .config 2>/dev/null)
|
|
CROSS_COMPILE := $(subst CONFIG_CROSS_COMPILER_PREFIX=,,$(CROSS_COMPILE))
|
|
CROSS_COMPILE := $(subst ",,$(CROSS_COMPILE))
|
|
#")
|
|
endif
|
|
|
|
# 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.
|
|
|
|
ifneq ($(CROSS_COMPILE),)
|
|
SUBARCH := $(shell echo $(CROSS_COMPILE) | cut -d- -f1)
|
|
else
|
|
SUBARCH := $(shell uname -m)
|
|
endif
|
|
SUBARCH := $(shell echo $(SUBARCH) | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
|
|
-e s/arm.*/arm/ -e s/sa110/arm/ \
|
|
-e s/s390x/s390/ -e s/parisc64/parisc/ \
|
|
-e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
|
|
|
|
ARCH ?= $(SUBARCH)
|
|
|
|
# Architecture as present in compile.h
|
|
UTS_MACHINE := $(ARCH)
|
|
|
|
# SHELL used by kbuild
|
|
CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
|
|
else if [ -x /bin/bash ]; then echo /bin/bash; \
|
|
else echo sh; fi ; fi)
|
|
|
|
# Decide whether to build built-in, modular, or both.
|
|
# Normally, just do built-in.
|
|
|
|
KBUILD_MODULES :=
|
|
KBUILD_BUILTIN := 1
|
|
|
|
# If we have only "make modules", don't compile built-in objects.
|
|
# When we're building modules with modversions, we need to consider
|
|
# the built-in objects during the descend as well, in order to
|
|
# make sure the checksums are uptodate before we record them.
|
|
|
|
ifeq ($(MAKECMDGOALS),modules)
|
|
KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
|
|
endif
|
|
|
|
# If we have "make <whatever> modules", compile modules
|
|
# in addition to whatever we do anyway.
|
|
# Just "make" or "make all" shall build modules as well
|
|
|
|
ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
|
|
KBUILD_MODULES := 1
|
|
endif
|
|
|
|
ifeq ($(MAKECMDGOALS),)
|
|
KBUILD_MODULES := 1
|
|
endif
|
|
|
|
export KBUILD_MODULES KBUILD_BUILTIN
|
|
export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
|
|
|
|
# Beautify output
|
|
# ---------------------------------------------------------------------------
|
|
#
|
|
# Normally, we echo the whole command before executing it. By making
|
|
# that echo $($(quiet)$(cmd)), we now have the possibility to set
|
|
# $(quiet) to choose other forms of output instead, e.g.
|
|
#
|
|
# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
|
|
# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
|
|
#
|
|
# If $(quiet) is empty, the whole command will be printed.
|
|
# If it is set to "quiet_", only the short version will be printed.
|
|
# If it is set to "silent_", nothing wil be printed at all, since
|
|
# the variable $(silent_cmd_cc_o_c) doesn't exist.
|
|
#
|
|
# A simple variant is to prefix commands with $(Q) - that's 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)
|
|
|
|
HOSTCC = gcc
|
|
HOSTCXX = g++
|
|
HOSTCFLAGS :=
|
|
HOSTCXXFLAGS :=
|
|
# We need some generic definitions
|
|
include $(srctree)/scripts/Kbuild.include
|
|
|
|
HOSTCFLAGS += $(call hostcc-option,-Wall -Wstrict-prototypes -O2 -fomit-frame-pointer,)
|
|
HOSTCXXFLAGS += -O2
|
|
|
|
# For maximum performance (+ possibly random breakage, uncomment
|
|
# the following)
|
|
|
|
MAKEFLAGS += -rR
|
|
|
|
# Make variables (CC, etc...)
|
|
|
|
AS = $(CROSS_COMPILE)as
|
|
CC = $(CROSS_COMPILE)gcc
|
|
LD = $(CC) -nostdlib
|
|
CPP = $(CC) -E
|
|
AR = $(CROSS_COMPILE)ar
|
|
NM = $(CROSS_COMPILE)nm
|
|
STRIP = $(CROSS_COMPILE)strip
|
|
OBJCOPY = $(CROSS_COMPILE)objcopy
|
|
OBJDUMP = $(CROSS_COMPILE)objdump
|
|
PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
|
|
AWK = awk
|
|
GENKSYMS = scripts/genksyms/genksyms
|
|
DEPMOD = /sbin/depmod
|
|
KALLSYMS = scripts/kallsyms
|
|
PERL = perl
|
|
CHECK = sparse
|
|
|
|
CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
|
|
MODFLAGS = -DMODULE
|
|
CFLAGS_MODULE = $(MODFLAGS)
|
|
AFLAGS_MODULE = $(MODFLAGS)
|
|
LDFLAGS_MODULE = -r
|
|
CFLAGS_KERNEL =
|
|
AFLAGS_KERNEL =
|
|
|
|
|
|
# Use LINUXINCLUDE when you must reference the include/ directory.
|
|
# Needed to be compatible with the O= option
|
|
CFLAGS := $(CFLAGS)
|
|
# Added only to final link stage of busybox binary
|
|
CFLAGS_busybox := $(CFLAGS_busybox)
|
|
CPPFLAGS := $(CPPFLAGS)
|
|
AFLAGS := $(AFLAGS)
|
|
LDFLAGS := $(LDFLAGS)
|
|
LDLIBS :=
|
|
|
|
# Read KERNELRELEASE from .kernelrelease (if it exists)
|
|
KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null)
|
|
KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
|
|
|
|
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \
|
|
ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
|
|
CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
|
|
HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
|
|
|
|
export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
|
|
export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
|
|
export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
|
|
export FLTFLAGS
|
|
|
|
# When compiling out-of-tree modules, put MODVERDIR in the module
|
|
# tree rather than in the kernel tree. The kernel tree might
|
|
# even be read-only.
|
|
export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
|
|
|
|
# Files to ignore in find ... statements
|
|
|
|
RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o
|
|
export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
|
|
|
|
# ===========================================================================
|
|
# Rules shared between *config targets and build targets
|
|
|
|
# Basic helpers built in scripts/
|
|
PHONY += scripts_basic
|
|
scripts_basic:
|
|
$(Q)$(MAKE) $(build)=scripts/basic
|
|
|
|
# To avoid any implicit rule to kick in, define an empty command.
|
|
scripts/basic/%: scripts_basic ;
|
|
|
|
# This target generates Kbuild's and Config.in's from *.c files
|
|
PHONY += gen_build_files
|
|
gen_build_files: $(wildcard $(srctree)/*/*.c) $(wildcard $(srctree)/*/*/*.c)
|
|
$(Q)$(srctree)/scripts/gen_build_files.sh $(srctree) $(objtree)
|
|
|
|
# bbox: we have helpers in applets/
|
|
# we depend on scripts_basic, since scripts/basic/fixdep
|
|
# must be built before any other host prog
|
|
PHONY += applets_dir
|
|
applets_dir: scripts_basic gen_build_files
|
|
$(Q)$(MAKE) $(build)=applets
|
|
|
|
applets/%: applets_dir ;
|
|
|
|
PHONY += outputmakefile
|
|
# outputmakefile generates a Makefile in the output directory, if using a
|
|
# separate output directory. This allows convenient use of make in the
|
|
# output directory.
|
|
outputmakefile:
|
|
ifneq ($(KBUILD_SRC),)
|
|
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
|
|
$(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
|
|
endif
|
|
|
|
# To make sure we do not include .config for any of the *config targets
|
|
# catch them early, and hand them over to scripts/kconfig/Makefile
|
|
# It is allowed to specify more targets when calling make, including
|
|
# mixing *config targets and build targets.
|
|
# For example 'make oldconfig all'.
|
|
# Detect when mixed targets is specified, and make a second invocation
|
|
# of make so .config is not included in this case either (for *config).
|
|
|
|
no-dot-config-targets := clean mrproper distclean \
|
|
cscope TAGS tags help %docs
|
|
#bbox# check% is removed from above
|
|
|
|
config-targets := 0
|
|
mixed-targets := 0
|
|
dot-config := 1
|
|
|
|
ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
|
|
ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
|
|
dot-config := 0
|
|
endif
|
|
endif
|
|
|
|
ifeq ($(KBUILD_EXTMOD),)
|
|
ifneq ($(filter config %config,$(MAKECMDGOALS)),)
|
|
config-targets := 1
|
|
ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
|
|
mixed-targets := 1
|
|
endif
|
|
endif
|
|
endif
|
|
|
|
ifeq ($(mixed-targets),1)
|
|
# ===========================================================================
|
|
# We're called with mixed targets (*config and build targets).
|
|
# Handle them one by one.
|
|
|
|
%:: FORCE
|
|
$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
|
|
|
|
else
|
|
ifeq ($(config-targets),1)
|
|
# ===========================================================================
|
|
# *config targets only - make sure prerequisites are updated, and descend
|
|
# in scripts/kconfig to make the *config target
|
|
|
|
# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
|
|
# KBUILD_DEFCONFIG may point out an alternative default configuration
|
|
# used for 'make defconfig'
|
|
-include $(srctree)/arch/$(ARCH)/Makefile
|
|
export KBUILD_DEFCONFIG
|
|
|
|
config: scripts_basic outputmakefile gen_build_files FORCE
|
|
$(Q)mkdir -p include
|
|
$(Q)$(MAKE) $(build)=scripts/kconfig $@
|
|
$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
|
|
|
|
%config: scripts_basic outputmakefile gen_build_files FORCE
|
|
$(Q)mkdir -p include
|
|
$(Q)$(MAKE) $(build)=scripts/kconfig $@
|
|
$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
|
|
|
|
else
|
|
# ===========================================================================
|
|
# Build targets only - this includes busybox, arch specific targets, clean
|
|
# targets and others. In general all targets except *config targets.
|
|
|
|
ifeq ($(KBUILD_EXTMOD),)
|
|
# Additional helpers built in scripts/
|
|
# Carefully list dependencies so we do not try to build scripts twice
|
|
# in parallel
|
|
PHONY += scripts
|
|
scripts: gen_build_files scripts_basic include/config/MARKER
|
|
$(Q)$(MAKE) $(build)=$(@)
|
|
|
|
scripts_basic: include/autoconf.h
|
|
|
|
# Objects we will link into busybox / subdirs we need to visit
|
|
core-y := \
|
|
applets/ \
|
|
|
|
libs-y := \
|
|
archival/ \
|
|
archival/libarchive/ \
|
|
console-tools/ \
|
|
coreutils/ \
|
|
coreutils/libcoreutils/ \
|
|
debianutils/ \
|
|
e2fsprogs/ \
|
|
editors/ \
|
|
findutils/ \
|
|
init/ \
|
|
libbb/ \
|
|
libpwdgrp/ \
|
|
loginutils/ \
|
|
mailutils/ \
|
|
miscutils/ \
|
|
modutils/ \
|
|
networking/ \
|
|
networking/libiproute/ \
|
|
networking/udhcp/ \
|
|
printutils/ \
|
|
procps/ \
|
|
runit/ \
|
|
selinux/ \
|
|
shell/ \
|
|
sysklogd/ \
|
|
util-linux/ \
|
|
util-linux/volume_id/ \
|
|
|
|
endif # KBUILD_EXTMOD
|
|
|
|
ifeq ($(dot-config),1)
|
|
# In this section, we need .config
|
|
|
|
# Read in dependencies to all Kconfig* files, make sure to run
|
|
# oldconfig if changes are detected.
|
|
-include .kconfig.d
|
|
|
|
-include .config
|
|
|
|
# If .config needs to be updated, it will be done via the dependency
|
|
# that autoconf has on .config.
|
|
# To avoid any implicit rule to kick in, define an empty command
|
|
.config .kconfig.d: ;
|
|
|
|
# Now we can define CFLAGS etc according to .config
|
|
include $(srctree)/Makefile.flags
|
|
|
|
# If .config is newer than include/autoconf.h, someone tinkered
|
|
# with it and forgot to run make oldconfig.
|
|
# If kconfig.d is missing then we are probarly in a cleaned tree so
|
|
# we execute the config step to be sure to catch updated Kconfig files
|
|
include/autoconf.h: .kconfig.d .config $(wildcard $(srctree)/*/*.c) $(wildcard $(srctree)/*/*/*.c) | gen_build_files
|
|
$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
|
|
|
|
include/usage.h: gen_build_files
|
|
|
|
else
|
|
# Dummy target needed, because used as prerequisite
|
|
include/autoconf.h: ;
|
|
endif
|
|
|
|
# The all: target is the default when no target is given on the
|
|
# command line.
|
|
# This allow a user to issue only 'make' to build a kernel including modules
|
|
# Defaults busybox but it is usually overridden in the arch makefile
|
|
all: busybox doc
|
|
|
|
-include $(srctree)/arch/$(ARCH)/Makefile
|
|
|
|
# arch Makefile may override CC so keep this after arch Makefile is included
|
|
#bbox# NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
|
|
CHECKFLAGS += $(NOSTDINC_FLAGS)
|
|
|
|
# Default kernel image to build when no specific target is given.
|
|
# KBUILD_IMAGE may be overruled on the commandline or
|
|
# set in the environment
|
|
# Also any assignments in arch/$(ARCH)/Makefile take precedence over
|
|
# this default value
|
|
export KBUILD_IMAGE ?= busybox
|
|
|
|
#
|
|
# INSTALL_PATH specifies where to place the updated kernel and system map
|
|
# images. Default is /boot, but you can set it to other values
|
|
export INSTALL_PATH ?= /boot
|
|
|
|
#
|
|
# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
|
|
# relocations required by build roots. This is not defined in the
|
|
# makefile but the arguement can be passed to make if needed.
|
|
#
|
|
|
|
MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
|
|
export MODLIB
|
|
|
|
|
|
ifeq ($(KBUILD_EXTMOD),)
|
|
busybox-dirs := $(patsubst %/,%,$(filter %/, $(core-y) $(core-m) $(libs-y) $(libs-m)))
|
|
|
|
busybox-alldirs := $(sort $(busybox-dirs) $(patsubst %/,%,$(filter %/, \
|
|
$(core-n) $(core-) $(libs-n) $(libs-) \
|
|
)))
|
|
|
|
core-y := $(patsubst %/, %/built-in.o, $(core-y))
|
|
libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
|
|
libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
|
|
libs-y := $(libs-y1) $(libs-y2)
|
|
|
|
# Build busybox
|
|
# ---------------------------------------------------------------------------
|
|
# busybox is build from the objects selected by $(busybox-init) and
|
|
# $(busybox-main). Most are built-in.o files from top-level directories
|
|
# in the kernel tree, others are specified in arch/$(ARCH)Makefile.
|
|
# Ordering when linking is important, and $(busybox-init) must be first.
|
|
#
|
|
# busybox
|
|
# ^
|
|
# |
|
|
# +-< $(busybox-init)
|
|
# | +--< init/version.o + more
|
|
# |
|
|
# +--< $(busybox-main)
|
|
# | +--< driver/built-in.o mm/built-in.o + more
|
|
# |
|
|
# +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
|
|
#
|
|
# busybox version (uname -v) cannot be updated during normal
|
|
# descending-into-subdirs phase since we do not yet know if we need to
|
|
# update busybox.
|
|
# Therefore this step is delayed until just before final link of busybox -
|
|
# except in the kallsyms case where it is done just before adding the
|
|
# symbols to the kernel.
|
|
#
|
|
# System.map is generated to document addresses of all kernel symbols
|
|
|
|
busybox-all := $(core-y) $(libs-y)
|
|
|
|
# Rule to link busybox - also used during CONFIG_KALLSYMS
|
|
# May be overridden by arch/$(ARCH)/Makefile
|
|
quiet_cmd_busybox__ ?= LINK $@
|
|
cmd_busybox__ ?= $(srctree)/scripts/trylink \
|
|
"$@" \
|
|
"$(CC)" \
|
|
"$(CFLAGS) $(CFLAGS_busybox)" \
|
|
"$(LDFLAGS) $(EXTRA_LDFLAGS)" \
|
|
"$(core-y)" \
|
|
"$(libs-y)" \
|
|
"$(LDLIBS)"
|
|
|
|
# Generate System.map
|
|
quiet_cmd_sysmap = SYSMAP
|
|
cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
|
|
|
|
# Link of busybox
|
|
# If CONFIG_KALLSYMS is set .version is already updated
|
|
# Generate System.map and verify that the content is consistent
|
|
# Use + in front of the busybox_version rule to silent warning with make -j2
|
|
# First command is ':' to allow us to use + in front of the rule
|
|
define rule_busybox__
|
|
:
|
|
$(call cmd,busybox__)
|
|
$(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@F).cmd
|
|
endef
|
|
|
|
|
|
ifdef CONFIG_KALLSYMS
|
|
# Generate section listing all symbols and add it into busybox $(kallsyms.o)
|
|
# It's a three stage process:
|
|
# o .tmp_busybox1 has all symbols and sections, but __kallsyms is
|
|
# empty
|
|
# Running kallsyms on that gives us .tmp_kallsyms1.o with
|
|
# the right size - busybox version (uname -v) is updated during this step
|
|
# o .tmp_busybox2 now has a __kallsyms section of the right size,
|
|
# but due to the added section, some addresses have shifted.
|
|
# From here, we generate a correct .tmp_kallsyms2.o
|
|
# o The correct .tmp_kallsyms2.o is linked into the final busybox.
|
|
# o Verify that the System.map from busybox matches the map from
|
|
# .tmp_busybox2, just in case we did not generate kallsyms correctly.
|
|
# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
|
|
# .tmp_busybox3 and .tmp_kallsyms3.o. This is only meant as a
|
|
# temporary bypass to allow the kernel to be built while the
|
|
# maintainers work out what went wrong with kallsyms.
|
|
|
|
ifdef CONFIG_KALLSYMS_EXTRA_PASS
|
|
last_kallsyms := 3
|
|
else
|
|
last_kallsyms := 2
|
|
endif
|
|
|
|
kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
|
|
|
|
define verify_kallsyms
|
|
$(Q)$(if $($(quiet)cmd_sysmap), \
|
|
echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
|
|
$(cmd_sysmap) .tmp_busybox$(last_kallsyms) .tmp_System.map
|
|
$(Q)cmp -s System.map .tmp_System.map || \
|
|
(echo Inconsistent kallsyms data; \
|
|
echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
|
|
rm .tmp_kallsyms* ; /bin/false )
|
|
endef
|
|
|
|
# Update busybox 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 = $(cmd_busybox__)
|
|
define rule_ksym_ld
|
|
:
|
|
+$(call cmd,busybox_version)
|
|
$(call cmd,busybox__)
|
|
$(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@F).cmd
|
|
endef
|
|
|
|
# Generate .S file with all kernel symbols
|
|
quiet_cmd_kallsyms = KSYM $@
|
|
cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
|
|
$(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
|
|
|
|
.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
|
|
$(call if_changed_dep,as_o_S)
|
|
|
|
.tmp_kallsyms%.S: .tmp_busybox% $(KALLSYMS)
|
|
$(call cmd,kallsyms)
|
|
|
|
# .tmp_busybox1 must be complete except kallsyms, so update busybox version
|
|
.tmp_busybox1: $(busybox-lds) $(busybox-all) FORCE
|
|
$(call if_changed_rule,ksym_ld)
|
|
|
|
.tmp_busybox2: $(busybox-lds) $(busybox-all) .tmp_kallsyms1.o FORCE
|
|
$(call if_changed,busybox__)
|
|
|
|
.tmp_busybox3: $(busybox-lds) $(busybox-all) .tmp_kallsyms2.o FORCE
|
|
$(call if_changed,busybox__)
|
|
|
|
# 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_busybox% FORCE
|
|
($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
|
|
|
|
.tmp_map3: .tmp_map2
|
|
|
|
.tmp_map2: .tmp_map1
|
|
|
|
endif # ifdef CONFIG_KALLSYMS
|
|
|
|
# busybox image - including updated kernel symbols
|
|
busybox_unstripped: $(busybox-all) FORCE
|
|
$(call if_changed_rule,busybox__)
|
|
$(Q)rm -f .old_version
|
|
|
|
busybox: busybox_unstripped
|
|
ifeq ($(SKIP_STRIP),y)
|
|
$(Q)cp $< $@
|
|
else
|
|
$(Q)$(STRIP) -s --remove-section=.note --remove-section=.comment \
|
|
busybox_unstripped -o $@
|
|
# strip is confused by PIE executable and does not set exec bits
|
|
$(Q)chmod a+x $@
|
|
endif
|
|
|
|
# The actual objects are generated when descending,
|
|
# make sure no implicit rule kicks in
|
|
$(sort $(busybox-all)): $(busybox-dirs) ;
|
|
|
|
# Handle descending into subdirectories listed in $(busybox-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 += $(busybox-dirs)
|
|
$(busybox-dirs): prepare scripts
|
|
$(Q)$(MAKE) $(build)=$@
|
|
|
|
# Build the kernel release string
|
|
# The KERNELRELEASE is stored in a file named .kernelrelease
|
|
# to be used when executing for example make install or make modules_install
|
|
#
|
|
# Take the contents of any files called localversion* and the config
|
|
# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
|
|
# LOCALVERSION from the command line override all of this
|
|
|
|
nullstring :=
|
|
space := $(nullstring) # end of line
|
|
|
|
___localver = $(objtree)/localversion* $(srctree)/localversion*
|
|
__localver = $(sort $(wildcard $(___localver)))
|
|
# skip backup files (containing '~')
|
|
_localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
|
|
|
|
localver = $(subst $(space),, \
|
|
$(shell cat /dev/null $(_localver)) \
|
|
$(patsubst "%",%,$(CONFIG_LOCALVERSION)))
|
|
|
|
# If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
|
|
# and if the SCM is know a tag from the SCM is appended.
|
|
# The appended tag is determinded by the SCM used.
|
|
#
|
|
# Currently, only git is supported.
|
|
# Other SCMs can edit scripts/setlocalversion and add the appropriate
|
|
# checks as needed.
|
|
ifdef _BB_DISABLED_CONFIG_LOCALVERSION_AUTO
|
|
_localver-auto = $(shell $(CONFIG_SHELL) \
|
|
$(srctree)/scripts/setlocalversion $(srctree))
|
|
localver-auto = $(LOCALVERSION)$(_localver-auto)
|
|
endif
|
|
|
|
localver-full = $(localver)$(localver-auto)
|
|
|
|
# Store (new) KERNELRELASE string in .kernelrelease
|
|
kernelrelease = $(KERNELVERSION)$(localver-full)
|
|
.kernelrelease: FORCE
|
|
$(Q)rm -f $@
|
|
$(Q)echo $(kernelrelease) > $@
|
|
|
|
|
|
# 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 $(srctree)
|
|
# 2) Create the include2 directory, used for the second asm symlink
|
|
prepare3: .kernelrelease
|
|
ifneq ($(KBUILD_SRC),)
|
|
@echo ' Using $(srctree) as source for busybox'
|
|
$(Q)if [ -f $(srctree)/.config ]; then \
|
|
echo " $(srctree) is not clean, please run 'make mrproper'";\
|
|
echo " in the '$(srctree)' directory.";\
|
|
/bin/false; \
|
|
fi;
|
|
$(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
|
|
$(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
|
|
endif
|
|
|
|
# prepare2 creates a makefile if using a separate output directory
|
|
prepare2: prepare3 outputmakefile
|
|
|
|
prepare1: prepare2 include/config/MARKER
|
|
ifneq ($(KBUILD_MODULES),)
|
|
$(Q)mkdir -p $(MODVERDIR)
|
|
$(Q)rm -f $(MODVERDIR)/*
|
|
endif
|
|
|
|
archprepare: prepare1 scripts_basic applets_dir
|
|
|
|
prepare0: archprepare FORCE
|
|
$(Q)$(MAKE) $(build)=.
|
|
|
|
# All the preparing..
|
|
prepare prepare-all: prepare0
|
|
|
|
# Leave this as default for preprocessing busybox.lds.S, which is now
|
|
# done in arch/$(ARCH)/kernel/Makefile
|
|
|
|
export CPPFLAGS_busybox.lds += -P -C -U$(ARCH)
|
|
|
|
# FIXME: The asm symlink changes when $(ARCH) changes. That's
|
|
# hard to detect, but I suppose "make mrproper" is a good idea
|
|
# before switching between archs anyway.
|
|
|
|
#bbox# include/asm:
|
|
#bbox# @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
|
|
#bbox# $(Q)if [ ! -d include ]; then mkdir -p include; fi;
|
|
#bbox# @ln -fsn asm-$(ARCH) $@
|
|
|
|
# Split autoconf.h into include/linux/config/*
|
|
quiet_cmd_gen_bbconfigopts = GEN include/bbconfigopts.h
|
|
cmd_gen_bbconfigopts = $(srctree)/scripts/mkconfigs include/bbconfigopts.h include/bbconfigopts_bz2.h
|
|
quiet_cmd_split_autoconf = SPLIT include/autoconf.h -> include/config/*
|
|
cmd_split_autoconf = scripts/basic/split-include include/autoconf.h include/config
|
|
#bbox# piggybacked generation of few .h files
|
|
include/config/MARKER: scripts/basic/split-include include/autoconf.h
|
|
$(call cmd,split_autoconf)
|
|
$(call cmd,gen_bbconfigopts)
|
|
@touch $@
|
|
|
|
# Generate some files
|
|
# ---------------------------------------------------------------------------
|
|
|
|
# KERNELRELEASE can change from a few different places, meaning version.h
|
|
# needs to be updated, so this check is forced on all builds
|
|
|
|
uts_len := 64
|
|
|
|
define filechk_version.h
|
|
if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
|
|
echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
|
|
exit 1; \
|
|
fi; \
|
|
(echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
|
|
echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \
|
|
echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \
|
|
)
|
|
endef
|
|
|
|
# ---------------------------------------------------------------------------
|
|
|
|
PHONY += depend dep
|
|
depend dep:
|
|
@echo '*** Warning: make $@ is unnecessary now.'
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Modules
|
|
|
|
ifdef _BB_DISABLED_CONFIG_MODULES
|
|
|
|
# By default, build modules as well
|
|
|
|
all: modules
|
|
|
|
# Build modules
|
|
|
|
PHONY += modules
|
|
modules: $(busybox-dirs) $(if $(KBUILD_BUILTIN),busybox)
|
|
@echo ' Building modules, stage 2.';
|
|
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
|
|
|
|
|
|
# Target to prepare building external modules
|
|
PHONY += modules_prepare
|
|
modules_prepare: prepare scripts
|
|
|
|
# Target to install modules
|
|
PHONY += modules_install
|
|
modules_install: _modinst_ _modinst_post
|
|
|
|
PHONY += _modinst_
|
|
_modinst_:
|
|
@if [ -z "`$(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) -rR -f $(srctree)/scripts/Makefile.modinst
|
|
|
|
# If System.map exists, run depmod. This deliberately does not have a
|
|
# dependency on System.map since that would run the dependency tree on
|
|
# busybox. This depmod is only for convenience to give the initial
|
|
# boot a modules.dep even before / is mounted read-write. However the
|
|
# boot script depmod is the master version.
|
|
ifeq "$(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 busybox 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) _install 0_lib
|
|
CLEAN_FILES += busybox busybox_unstripped* busybox.links \
|
|
System.map .kernelrelease \
|
|
.tmp_kallsyms* .tmp_version .tmp_busybox* .tmp_System.map
|
|
|
|
# Directories & files removed with 'make mrproper'
|
|
MRPROPER_DIRS += include/config include2
|
|
MRPROPER_FILES += .config .config.old include/asm .version .old_version \
|
|
include/NUM_APPLETS.h \
|
|
include/autoconf.h \
|
|
include/bbconfigopts.h \
|
|
include/bbconfigopts_bz2.h \
|
|
include/usage_compressed.h \
|
|
include/applet_tables.h \
|
|
include/applets.h \
|
|
include/usage.h \
|
|
applets/usage \
|
|
.kernelrelease Module.symvers tags TAGS cscope* \
|
|
busybox_old
|
|
|
|
# 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) $(busybox-alldirs))
|
|
|
|
PHONY += $(clean-dirs) clean archclean
|
|
$(clean-dirs):
|
|
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
|
|
|
|
clean: archclean $(clean-dirs)
|
|
$(call cmd,rmdirs)
|
|
$(call cmd,rmfiles)
|
|
@find . $(RCS_FIND_IGNORE) \
|
|
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
|
|
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
|
|
-type f -print | xargs rm -f
|
|
|
|
PHONY += doc-clean
|
|
doc-clean: rm-files := docs/busybox.pod \
|
|
docs/BusyBox.html docs/busybox.1 docs/BusyBox.txt
|
|
doc-clean:
|
|
$(call cmd,rmfiles)
|
|
|
|
# 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)
|
|
@find . -name Config.src | sed 's/.src$$/.in/' | xargs -r rm -f
|
|
@find . -name Kbuild.src | sed 's/.src$$//' | xargs -r rm -f
|
|
|
|
# distclean
|
|
#
|
|
PHONY += distclean
|
|
|
|
distclean: mrproper
|
|
@find $(srctree) $(RCS_FIND_IGNORE) \
|
|
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
|
|
-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
|
|
-o -name '.*.rej' -o -name '*.tmp' -o -size 0 \
|
|
-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
|
|
-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: FORCE
|
|
$(Q)$(MAKE) $(build)=$(package-dir) $@
|
|
rpm: FORCE
|
|
$(Q)$(MAKE) $(build)=$(package-dir) $@
|
|
|
|
|
|
# Brief documentation of the typical targets used
|
|
# ---------------------------------------------------------------------------
|
|
|
|
boards := $(wildcard $(srctree)/configs/*_defconfig)
|
|
boards := $(notdir $(boards))
|
|
|
|
-include $(srctree)/Makefile.help
|
|
|
|
# Documentation targets
|
|
# ---------------------------------------------------------------------------
|
|
%docs: scripts_basic FORCE
|
|
$(Q)$(MAKE) $(build)=Documentation/DocBook $@
|
|
|
|
else # KBUILD_EXTMOD
|
|
|
|
###
|
|
# External module support.
|
|
# When building external modules the kernel used as basis is considered
|
|
# read-only, and no consistency checks are made and the make
|
|
# system is not used on the basis kernel. If updates are required
|
|
# in the basis kernel ordinary make commands (without M=...) must
|
|
# be used.
|
|
#
|
|
# The following are the only valid targets when building external
|
|
# modules.
|
|
# make M=dir clean Delete all automatically generated files
|
|
# make M=dir modules Make all modules in specified dir
|
|
# make M=dir Same as 'make M=dir modules'
|
|
# make M=dir modules_install
|
|
# Install the modules build in the module directory
|
|
# Assumes install directory is already created
|
|
|
|
# We are always building modules
|
|
KBUILD_MODULES := 1
|
|
PHONY += crmodverdir
|
|
crmodverdir:
|
|
$(Q)mkdir -p $(MODVERDIR)
|
|
$(Q)rm -f $(MODVERDIR)/*
|
|
|
|
PHONY += $(objtree)/Module.symvers
|
|
$(objtree)/Module.symvers:
|
|
@test -e $(objtree)/Module.symvers || ( \
|
|
echo; \
|
|
echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
|
|
echo " is missing; modules will have no dependencies and modversions."; \
|
|
echo )
|
|
|
|
module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
|
|
PHONY += $(module-dirs) modules
|
|
$(module-dirs): crmodverdir $(objtree)/Module.symvers
|
|
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
|
|
|
|
modules: $(module-dirs)
|
|
@echo ' Building modules, stage 2.';
|
|
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
|
|
|
|
PHONY += modules_install
|
|
modules_install: _emodinst_ _emodinst_post
|
|
|
|
install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
|
|
PHONY += _emodinst_
|
|
_emodinst_:
|
|
$(Q)mkdir -p $(MODLIB)/$(install-dir)
|
|
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
|
|
|
|
# Run depmod only is we have System.map and depmod is executable
|
|
quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
|
|
cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \
|
|
$(DEPMOD) -ae -F System.map \
|
|
$(if $(strip $(INSTALL_MOD_PATH)), \
|
|
-b $(INSTALL_MOD_PATH) -r) \
|
|
$(KERNELRELEASE); \
|
|
fi
|
|
|
|
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: $(clean-dirs)
|
|
$(call cmd,rmdirs)
|
|
@find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
|
|
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
|
|
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
|
|
-type f -print | xargs rm -f
|
|
|
|
# Dummies...
|
|
PHONY += prepare scripts
|
|
prepare: ;
|
|
scripts: ;
|
|
endif # KBUILD_EXTMOD
|
|
|
|
# Generate tags for editors
|
|
# ---------------------------------------------------------------------------
|
|
|
|
#We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
|
|
#(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
|
|
#Adding $(srctree) adds about 20M on i386 to the size of the output file!
|
|
|
|
ifeq ($(src),$(obj))
|
|
__srctree =
|
|
else
|
|
__srctree = $(srctree)/
|
|
endif
|
|
|
|
ifeq ($(ALLSOURCE_ARCHS),)
|
|
ifeq ($(ARCH),um)
|
|
ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
|
|
else
|
|
ALLINCLUDE_ARCHS := $(ARCH)
|
|
endif
|
|
else
|
|
#Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.
|
|
ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
|
|
endif
|
|
|
|
ALLSOURCE_ARCHS := $(ARCH)
|
|
|
|
define all-sources
|
|
( find $(__srctree) $(RCS_FIND_IGNORE) \
|
|
\( -name include -o -name arch \) -prune -o \
|
|
-name '*.[chS]' -print; \
|
|
for ARCH in $(ALLSOURCE_ARCHS) ; do \
|
|
find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
|
|
-name '*.[chS]' -print; \
|
|
done ; \
|
|
find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
|
|
-name '*.[chS]' -print; \
|
|
find $(__srctree)include $(RCS_FIND_IGNORE) \
|
|
\( -name config -o -name 'asm-*' \) -prune \
|
|
-o -name '*.[chS]' -print; \
|
|
for ARCH in $(ALLINCLUDE_ARCHS) ; do \
|
|
find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
|
|
-name '*.[chS]' -print; \
|
|
done ; \
|
|
find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
|
|
-name '*.[chS]' -print )
|
|
endef
|
|
|
|
quiet_cmd_cscope-file = FILELST cscope.files
|
|
cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
|
|
|
|
quiet_cmd_cscope = MAKE cscope.out
|
|
cmd_cscope = cscope -b
|
|
|
|
cscope: FORCE
|
|
$(call cmd,cscope-file)
|
|
$(call cmd,cscope)
|
|
|
|
quiet_cmd_TAGS = MAKE $@
|
|
define cmd_TAGS
|
|
rm -f $@; \
|
|
ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
|
|
echo "-I __initdata,__exitdata,__acquires,__releases \
|
|
-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
|
|
--extra=+f --c-kinds=+px"`; \
|
|
$(all-sources) | xargs etags $$ETAGSF -a
|
|
endef
|
|
|
|
TAGS: FORCE
|
|
$(call cmd,TAGS)
|
|
|
|
|
|
quiet_cmd_tags = MAKE $@
|
|
define cmd_tags
|
|
rm -f $@; \
|
|
CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
|
|
echo "-I __initdata,__exitdata,__acquires,__releases \
|
|
-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
|
|
--extra=+f --c-kinds=+px"`; \
|
|
$(all-sources) | xargs ctags $$CTAGSF -a
|
|
endef
|
|
|
|
tags: FORCE
|
|
$(call cmd,tags)
|
|
|
|
|
|
# Scripts to check various things for consistency
|
|
# ---------------------------------------------------------------------------
|
|
|
|
includecheck:
|
|
find * $(RCS_FIND_IGNORE) \
|
|
-name '*.[hcS]' -type f -print | sort \
|
|
| xargs $(PERL) -w scripts/checkincludes.pl
|
|
|
|
versioncheck:
|
|
find * $(RCS_FIND_IGNORE) \
|
|
-name '*.[hcS]' -type f -print | sort \
|
|
| xargs $(PERL) -w scripts/checkversion.pl
|
|
|
|
namespacecheck:
|
|
$(PERL) $(srctree)/scripts/namespace.pl
|
|
|
|
endif #ifeq ($(config-targets),1)
|
|
endif #ifeq ($(mixed-targets),1)
|
|
|
|
PHONY += checkstack
|
|
checkstack:
|
|
$(OBJDUMP) -d busybox $$(find . -name '*.ko') | \
|
|
$(PERL) $(src)/scripts/checkstack.pl $(ARCH)
|
|
|
|
kernelrelease:
|
|
$(if $(wildcard .kernelrelease), $(Q)echo $(KERNELRELEASE), \
|
|
$(error kernelrelease not valid - run 'make *config' to update it))
|
|
kernelversion:
|
|
@echo $(KERNELVERSION)
|
|
|
|
# Single targets
|
|
# ---------------------------------------------------------------------------
|
|
# Single targets are compatible with:
|
|
# - build whith mixed source and output
|
|
# - build with separate output dir 'make O=...'
|
|
# - external modules
|
|
#
|
|
# target-dir => where to store outputfile
|
|
# build-dir => directory in kernel source tree to use
|
|
|
|
ifeq ($(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 $@)
|
|
|
|
# Modules
|
|
%/: prepare scripts FORCE
|
|
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
|
|
$(build)=$(build-dir)
|
|
/: prepare scripts FORCE
|
|
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
|
|
$(build)=$(build-dir)
|
|
|
|
%.ko: prepare scripts FORCE
|
|
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
|
|
$(build)=$(build-dir) $(@:.ko=.o)
|
|
$(Q)$(MAKE) -rR -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) $(AFLAGS_$(*F).o)
|
|
|
|
quiet_cmd_as_o_S = AS $@
|
|
cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
|
|
|
|
# read all saved command lines
|
|
|
|
targets := $(wildcard $(sort $(targets)))
|
|
cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
|
|
|
|
ifneq ($(cmd_files),)
|
|
$(cmd_files): ; # Do not try to update included dependency files
|
|
include $(cmd_files)
|
|
endif
|
|
|
|
# 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:
|
|
|
|
-include $(srctree)/Makefile.custom
|
|
|
|
# Declare the contents of the .PHONY variable as phony. We keep that
|
|
# information in a variable se we can use it in if_changed and friends.
|
|
.PHONY: $(PHONY)
|