blob: d705e48f52109e1347aced0bd652f5a24e678b6c [file] [log] [blame]
VERSION = 2
PATCHLEVEL = 5
SUBLEVEL = 56
EXTRAVERSION =
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
# More info can be located in ./Documentation/kbuild
# Comments in this file are targeted only to the developer, do not
# expect to learn how to build the kernel reading this file.
# 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 of
# 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.
KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
# SUBARCH tells the usermode build what the underlying arch is. That is set
# first, and if a usermode build is happening, the "ARCH=um" on the command
# line overrides the setting of ARCH below. If a native build is happening,
# then ARCH is assigned, getting whatever value it gets normally, and
# SUBARCH is subsequently ignored.
SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e s/arm.*/arm/ -e s/sa110/arm/)
ARCH := $(SUBARCH)
KERNELPATH=kernel-$(shell echo $(KERNELRELEASE) | sed -e "s/-//g")
UTS_MACHINE := $(ARCH)
CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
else if [ -x /bin/bash ]; then echo /bin/bash; \
else echo sh; fi ; fi)
TOPDIR := $(CURDIR)
HOSTCC = gcc
HOSTCXX = g++
HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
HOSTCXXFLAGS = -O2
CROSS_COMPILE =
# That's our default target when none is given on the command line
all: vmlinux
# Decide whether to build built-in, modular, or both.
# Normally, just do built-in.
KBUILD_MODULES :=
KBUILD_BUILTIN := 1
# If we have only "make modules", don't compile built-in objects.
ifeq ($(MAKECMDGOALS),modules)
KBUILD_BUILTIN :=
endif
# If we have "make <whatever> modules", compile modules
# in addition to whatever we do anyway.
ifneq ($(filter modules,$(MAKECMDGOALS)),)
KBUILD_MODULES := 1
endif
# Just "make" or "make all" shall build modules as well
ifeq ($(MAKECMDGOALS),)
KBUILD_MODULES := 1
endif
ifneq ($(filter all,$(MAKECMDGOALS)),)
KBUILD_MODULES := 1
endif
export KBUILD_MODULES KBUILD_BUILTIN KBUILD_VERBOSE
# 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 $(silent_cmd_cc_o_c) doesn't exist.
# For now, leave verbose as default
ifndef KBUILD_VERBOSE
KBUILD_VERBOSE = 1
endif
MAKEFLAGS += --no-print-directory
# For maximum performance (+ possibly random breakage, uncomment
# the following)
#MAKEFLAGS += -rR
# If the user wants quiet mode, echo short versions of the commands
# only
ifeq ($(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
# Paths to obj / src tree
src := .
obj := .
srctree := .
objtree := .
export srctree objtree
# 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 = /sbin/genksyms
DEPMOD = /sbin/depmod
KALLSYMS = scripts/kallsyms
PERL = perl
MODFLAGS = -DMODULE
CFLAGS_MODULE = $(MODFLAGS)
AFLAGS_MODULE = $(MODFLAGS)
LDFLAGS_MODULE = -r
CFLAGS_KERNEL =
AFLAGS_KERNEL =
NOSTDINC_FLAGS = -nostdinc -iwithprefix include
CPPFLAGS := -D__KERNEL__ -Iinclude
CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes -Wno-trigraphs -O2 \
-fno-strict-aliasing -fno-common
AFLAGS := -D__ASSEMBLY__ $(CPPFLAGS)
export VERSION PATCHLEVEL SUBLEVEL EXTRAVERSION KERNELRELEASE ARCH \
CONFIG_SHELL TOPDIR HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
HOSTCXX HOSTCXXFLAGS LDFLAGS_BLOB LDFLAGS_MODULE
export CPPFLAGS NOSTDINC_FLAGS OBJCOPYFLAGS LDFLAGS
export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
# The temporary file to save gcc -MD generated dependencies must not
# contain a comma
depfile = $(subst $(comma),_,$(@D)/.$(@F).d)
noconfig_targets := xconfig menuconfig config oldconfig randconfig \
defconfig allyesconfig allnoconfig allmodconfig \
clean mrproper distclean \
help tags TAGS sgmldocs psdocs pdfdocs htmldocs \
checkconfig checkhelp checkincludes
RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \) -prune -o
RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS
# Helpers built in scripts/
# ---------------------------------------------------------------------------
scripts/docproc scripts/fixdep scripts/split-include : scripts ;
.PHONY: scripts
scripts:
$(Q)$(MAKE) $(build)=scripts
# Objects we will link into vmlinux / subdirs we need to visit
# ---------------------------------------------------------------------------
init-y := init/
drivers-y := drivers/ sound/
net-y := net/
libs-y := lib/
core-y := usr/
SUBDIRS :=
ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
export include_config := 1
-include .config
endif
include arch/$(ARCH)/Makefile
core-y += kernel/ mm/ fs/ ipc/ security/ crypto/
SUBDIRS += $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
$(core-y) $(core-m) $(drivers-y) $(drivers-m) \
$(net-y) $(net-m) $(libs-y) $(libs-m)))
ALL_SUBDIRS := $(sort $(SUBDIRS) $(patsubst %/,%,$(filter %/, \
$(init-n) $(init-) \
$(core-n) $(core-) $(drivers-n) $(drivers-) \
$(net-n) $(net-) $(libs-n) $(libs-))))
init-y := $(patsubst %/, %/built-in.o, $(init-y))
core-y := $(patsubst %/, %/built-in.o, $(core-y))
drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
net-y := $(patsubst %/, %/built-in.o, $(net-y))
libs-y := $(patsubst %/, %/lib.a, $(libs-y))
ifdef include_config
# Here goes the main Makefile
# ===========================================================================
#
# If the user gave a *config target, it'll be handled in another
# section below, since in this case we cannot include .config
# Same goes for other targets like clean/mrproper etc, which
# don't need .config, either
# In this section, we need .config
-include .config.cmd
ifdef CONFIG_MODULES
export EXPORT_FLAGS := -DEXPORT_SYMTAB
endif
ifndef CONFIG_FRAME_POINTER
CFLAGS += -fomit-frame-pointer
endif
#
# INSTALL_PATH specifies where to place the updated kernel and system map
# images. Uncomment if you want to place them anywhere other than root.
#
#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
# Build vmlinux
# ---------------------------------------------------------------------------
# This is a bit tricky: If we need to relink vmlinux, we want
# the version number incremented, which means recompile init/version.o
# and relink init/init.o. However, we cannot do this during the
# normal descending-into-subdirs phase, since at that time
# we cannot yet know if we will need to relink vmlinux.
# So we descend into init/ inside the rule for vmlinux again.
vmlinux-objs := $(HEAD) $(init-y) $(core-y) $(libs-y) $(drivers-y) $(net-y)
quiet_cmd_vmlinux__ = LD $@
define cmd_vmlinux__
$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) $(HEAD) $(init-y) \
--start-group \
$(core-y) \
$(libs-y) \
$(drivers-y) \
$(net-y) \
--end-group \
$(filter .tmp_kallsyms%,$^) \
-o $@
endef
# set -e makes the rule exit immediately on error
# Final awk script makes sure per-cpu vars are in per-cpu section, as
# old gcc (eg egcs 2.92.11) ignores section attribute if uninitialized.
define rule_vmlinux__
set -e
$(if $(filter .tmp_kallsyms%,$^),,
echo ' Generating build number'
. $(src)/scripts/mkversion > .tmp_version
mv -f .tmp_version .version
$(Q)$(MAKE) $(build)=init
)
$(call cmd,vmlinux__)
echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
endef
define rule_vmlinux_no_percpu
$(rule_vmlinux__)
$(NM) $@ | grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | sort > System.map
endef
ifdef CONFIG_SMP
define rule_vmlinux
$(rule_vmlinux_no_percpu)
$(AWK) -f $(srctree)/scripts/per-cpu-check.awk < System.map
endef
else
define rule_vmlinux
$(rule_vmlinux_no_percpu)
endef
endif
LDFLAGS_vmlinux += -T arch/$(ARCH)/vmlinux.lds.s
# Generate section listing all symbols and add it into vmlinux
# It's a three stage process:
# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
# empty
# Running kallsyms on that gives as .tmp_kallsyms1.o with
# the right size
# o .tmp_vmlinux2 now has a __kallsyms section of the right size,
# but due to the added section, some addresses have shifted
# From here, we generate a correct .tmp_kallsyms2.o
# o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
ifdef CONFIG_KALLSYMS
kallsyms.o := .tmp_kallsyms2.o
quiet_cmd_kallsyms = KSYM $@
cmd_kallsyms = $(NM) -n $< | scripts/kallsyms > $@
.tmp_kallsyms1.o .tmp_kallsyms2.o: %.o: %.S scripts FORCE
$(call if_changed_dep,as_o_S)
.tmp_kallsyms%.S: .tmp_vmlinux%
$(call cmd,kallsyms)
.tmp_vmlinux1: $(vmlinux-objs) arch/$(ARCH)/vmlinux.lds.s FORCE
$(call if_changed_rule,vmlinux__)
.tmp_vmlinux2: $(vmlinux-objs) .tmp_kallsyms1.o arch/$(ARCH)/vmlinux.lds.s FORCE
$(call if_changed_rule,vmlinux__)
endif
# Finally the vmlinux rule
vmlinux: $(vmlinux-objs) $(kallsyms.o) arch/$(ARCH)/vmlinux.lds.s FORCE
$(call if_changed_rule,vmlinux)
# The actual objects are generated when descending,
# make sure no implicit rule kicks in
$(sort $(vmlinux-objs)): $(SUBDIRS) ;
# Handle descending into subdirectories listed in $(SUBDIRS)
.PHONY: $(SUBDIRS)
$(SUBDIRS): .hdepend prepare
$(Q)$(MAKE) $(build)=$@
# Things we need done before we descend to build or make
# module versions are listed in "prepare"
.PHONY: prepare
prepare: include/linux/version.h include/asm include/config/MARKER
@echo ' Starting the build. KBUILD_BUILTIN=$(KBUILD_BUILTIN) KBUILD_MODULES=$(KBUILD_MODULES)'
# This can be used by arch/$ARCH/Makefile to preprocess
# their vmlinux.lds.S file
AFLAGS_vmlinux.lds.o += -P -C -U$(ARCH)
arch/$(ARCH)/vmlinux.lds.s: %.s: %.S scripts FORCE
$(call if_changed_dep,as_s_S)
targets += arch/$(ARCH)/vmlinux.lds.s
# Single targets
# ---------------------------------------------------------------------------
%.s: %.c scripts FORCE
$(Q)$(MAKE) $(build)=$(@D) $@
%.i: %.c scripts FORCE
$(Q)$(MAKE) $(build)=$(@D) $@
%.o: %.c scripts FORCE
$(Q)$(MAKE) $(build)=$(@D) $@
%.ko: scripts FORCE
$(Q)$(MAKE) $(build)=$(@D) $@
%.lst: %.c scripts FORCE
$(Q)$(MAKE) $(build)=$(@D) $@
%.s: %.S scripts FORCE
$(Q)$(MAKE) $(build)=$(@D) $@
%.o: %.S scripts FORCE
$(Q)$(MAKE) $(build)=$(@D) $@
# FIXME: The asm symlink changes when $(ARCH) changes. That's
# hard to detect, but I suppose "make mrproper" is a good idea
# before switching between archs anyway.
include/asm:
@echo ' Making asm->asm-$(ARCH) symlink'
@ln -s asm-$(ARCH) $@
# Split autoconf.h into include/linux/config/*
include/config/MARKER: scripts/split-include include/linux/autoconf.h
@echo ' SPLIT include/linux/autoconf.h -> include/config/*'
@scripts/split-include include/linux/autoconf.h include/config
@touch $@
# if .config is newer than include/linux/autoconf.h, someone tinkered
# with it and forgot to run make oldconfig
include/linux/autoconf.h: .config
$(Q)$(MAKE) $(build)=scripts/kconfig scripts/kconfig/conf
./scripts/kconfig/conf -s arch/$(ARCH)/Kconfig
# Generate some files
# ---------------------------------------------------------------------------
# version.h changes when $(KERNELRELEASE) etc change, as defined in
# this Makefile
uts_len := 64
include/linux/version.h: Makefile
@if expr length "$(KERNELRELEASE)" \> $(uts_len) >/dev/null ; then \
echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
exit 1; \
fi;
@echo -n ' Generating $@'
@(echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \
echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \
) > $@.tmp
@$(update-if-changed)
# Generate module versions
# ---------------------------------------------------------------------------
# The targets are still named depend / dep for traditional
# reasons, but the only thing we do here is generating
# the module version checksums.
.PHONY: depend dep $(patsubst %,_sfdep_%,$(SUBDIRS))
depend dep: .hdepend
# .hdepend is our (misnomed) marker for whether we've
# generated module versions
make-versions := $(strip $(if $(filter dep depend,$(MAKECMDGOALS)),1) \
$(if $(wildcard .hdepend),,1))
.hdepend: prepare FORCE
ifneq ($(make-versions),)
@$(MAKE) include/linux/modversions.h
@touch $@
endif
ifdef CONFIG_MODVERSIONS
# Update modversions.h, but only if it would change.
.PHONY: __rm_tmp_export-objs
__rm_tmp_export-objs:
@rm -rf .tmp_export-objs
include/linux/modversions.h: $(patsubst %,_modver_%,$(SUBDIRS))
@echo -n ' Generating $@'
@( echo "#ifndef _LINUX_MODVERSIONS_H";\
echo "#define _LINUX_MODVERSIONS_H"; \
echo "#include <linux/modsetver.h>"; \
cd .tmp_export-objs >/dev/null; \
for f in `find modules -name \*.ver -print | sort`; do \
echo "#include <linux/$${f}>"; \
done; \
echo "#endif"; \
) > $@.tmp; \
$(update-if-changed)
.PHONY: $(patsubst %, _modver_%, $(SUBDIRS))
$(patsubst %, _modver_%, $(SUBDIRS)): __rm_tmp_export-objs
$(Q)$(MAKE) -f scripts/Makefile.modver obj=$(patsubst _modver_%,%,$@)
else # !CONFIG_MODVERSIONS
.PHONY: include/linux/modversions.h
include/linux/modversions.h:
endif # CONFIG_MODVERSIONS
# ---------------------------------------------------------------------------
# Modules
ifdef CONFIG_MODULES
# Build modules
ifdef CONFIG_MODVERSIONS
MODFLAGS += -include include/linux/modversions.h
endif
.PHONY: modules
modules: $(SUBDIRS)
# Install modules
.PHONY: modules_install
modules_install: _modinst_ $(patsubst %, _modinst_%, $(SUBDIRS)) _modinst_post
.PHONY: _modinst_
_modinst_:
@rm -rf $(MODLIB)/kernel
@rm -f $(MODLIB)/build
@mkdir -p $(MODLIB)/kernel
@ln -s $(TOPDIR) $(MODLIB)/build
# If System.map exists, run depmod. This deliberately does not have a
# dependency on System.map since that would run the dependency tree on
# vmlinux. This depmod is only for convenience to give the initial
# boot a modules.dep even before / is mounted read-write. However the
# boot script depmod is the master version.
ifeq "$(strip $(INSTALL_MOD_PATH))" ""
depmod_opts :=
else
depmod_opts := -b $(INSTALL_MOD_PATH) -r
endif
.PHONY: _modinst_post
_modinst_post:
if [ -r System.map ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
.PHONY: $(patsubst %, _modinst_%, $(SUBDIRS))
$(patsubst %, _modinst_%, $(SUBDIRS)) :
$(Q)$(MAKE) -rR -f scripts/Makefile.modinst obj=$(patsubst _modinst_%,%,$@)
else # CONFIG_MODULES
# Modules not configured
# ---------------------------------------------------------------------------
modules modules_install: FORCE
@echo
@echo "The present kernel configuration has modules disabled."
@echo "Type 'make config' and enable loadable module support."
@echo "Then build a kernel with module support enabled."
@echo
@exit 1
endif # CONFIG_MODULES
# Generate asm-offsets.h
# ---------------------------------------------------------------------------
define generate-asm-offsets.h
(set -e; \
echo "#ifndef __ASM_OFFSETS_H__"; \
echo "#define __ASM_OFFSETS_H__"; \
echo "/*"; \
echo " * DO NOT MODIFY."; \
echo " *"; \
echo " * This file was generated by arch/$(ARCH)/Makefile"; \
echo " *"; \
echo " */"; \
echo ""; \
sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
echo ""; \
echo "#endif" )
endef
# RPM target
# ---------------------------------------------------------------------------
# If you do a make spec before packing the tarball you can rpm -ta it
spec:
. scripts/mkspec >kernel.spec
# Build a tar ball, generate an rpm from it and pack the result
# There arw two bits of magic here
# 1) The use of /. to avoid tar packing just the symlink
# 2) Removing the .dep files as they have source paths in them that
# will become invalid
rpm: clean spec
find . $(RCS_FIND_IGNORE) \
\( -size 0 -o -name .depend -o -name .hdepend \) \
-type f -print | xargs rm -f
set -e; \
cd $(TOPDIR)/.. ; \
ln -sf $(TOPDIR) $(KERNELPATH) ; \
tar -cvz $(RCS_TAR_IGNORE) -f $(KERNELPATH).tar.gz $(KERNELPATH)/. ; \
rm $(KERNELPATH) ; \
cd $(TOPDIR) ; \
$(CONFIG_SHELL) $(srctree)/scripts/mkversion > .version ; \
rpm -ta $(TOPDIR)/../$(KERNELPATH).tar.gz ; \
rm $(TOPDIR)/../$(KERNELPATH).tar.gz
else # ifdef include_config
ifeq ($(filter-out $(noconfig_targets),$(MAKECMDGOALS)),)
# Targets which don't need .config
# ===========================================================================
#
# These targets basically have their own Makefile - not quite, but at
# least its own exclusive section in the same Makefile. The reason for
# this is the following:
# To know the configuration, the main Makefile has to include
# .config. That's a obviously a problem when .config doesn't exist
# yet, but that could be kludged around with only including it if it
# exists.
# However, the larger problem is: If you run make *config, make will
# include the old .config, then execute your *config. It will then
# notice that a piece it included (.config) did change and restart from
# scratch. Which will cause execution of *config again. You get the
# picture.
# If we don't explicitly let the Makefile know that .config is changed
# by *config (the old way), it won't reread .config after *config,
# thus working with possibly stale values - we don't that either.
#
# So we divide things: This part here is for making *config targets,
# and other targets which should work when no .config exists yet.
# The main part above takes care of the rest after a .config exists.
# Kernel configuration
# ---------------------------------------------------------------------------
.PHONY: oldconfig xconfig menuconfig config \
make_with_config
scripts/kconfig/conf scripts/kconfig/mconf scripts/kconfig/qconf: scripts/fixdep FORCE
$(Q)$(MAKE) $(build)=scripts/kconfig $@
xconfig: scripts/kconfig/qconf
./scripts/kconfig/qconf arch/$(ARCH)/Kconfig
menuconfig: scripts/kconfig/mconf
$(Q)$(MAKE) $(build)=scripts/lxdialog
./scripts/kconfig/mconf arch/$(ARCH)/Kconfig
config: scripts/kconfig/conf
./scripts/kconfig/conf arch/$(ARCH)/Kconfig
oldconfig: scripts/kconfig/conf
./scripts/kconfig/conf -o arch/$(ARCH)/Kconfig
randconfig: scripts/kconfig/conf
./scripts/kconfig/conf -r arch/$(ARCH)/Kconfig
allyesconfig: scripts/kconfig/conf
./scripts/kconfig/conf -y arch/$(ARCH)/Kconfig
allnoconfig: scripts/kconfig/conf
./scripts/kconfig/conf -n arch/$(ARCH)/Kconfig
allmodconfig: scripts/kconfig/conf
./scripts/kconfig/conf -m arch/$(ARCH)/Kconfig
defconfig: scripts/kconfig/conf
./scripts/kconfig/conf -d arch/$(ARCH)/Kconfig
###
# Cleaning is done on three levels.
# make clean Delete all automatically generated files, including
# tools and firmware.
# make mrproper Delete the current configuration, and related files
# Any core files spread around is deleted as well
# make distclean Remove editor backup files, patch leftover files and the like
# Files removed with 'make clean'
CLEAN_FILES += vmlinux System.map MC*
# Files removed with 'make mrproper'
MRPROPER_FILES += \
include/linux/autoconf.h include/linux/version.h \
.version .config .config.old config.in config.old \
.menuconfig.log \
include/asm \
.hdepend include/linux/modversions.h \
tags TAGS kernel.spec \
.tmp*
# Directories removed with 'make mrproper'
MRPROPER_DIRS += \
.tmp_export-objs \
include/config \
include/linux/modules
# clean - Delete all intermediate files
#
clean-dirs += $(ALL_SUBDIRS) Documentation/DocBook scripts
$(addprefix _clean_,$(clean-dirs)):
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
quiet_cmd_rmclean = RM $$(CLEAN_FILES)
cmd_rmclean = rm -f $(CLEAN_FILES)
clean: archclean $(addprefix _clean_,$(clean-dirs))
$(call cmd,rmclean)
@find . $(RCS_FIND_IGNORE) \
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
-o -name '.*.d' -o -name '.*.tmp' \) -type f \
-print | xargs rm -f
# mrproper - delete configuration + modules + core files
#
quiet_cmd_mrproper = RM $$(MRPROPER_DIRS) + $$(MRPROPER_FILES)
cmd_mrproper = rm -rf $(MRPROPER_DIRS) && rm -f $(MRPROPER_FILES)
mrproper distclean: clean archmrproper
@echo ' Making $@ in the srctree'
@find . $(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
$(call cmd,mrproper)
# Generate tags for editors
# ---------------------------------------------------------------------------
define all-sources
( find . $(RCS_FIND_IGNORE) \
\( -name include -o -name arch \) -prune -o \
-name '*.[chS]' -print; \
find arch/$(ARCH) $(RCS_FIND_IGNORE) \
-name '*.[chS]' -print; \
find include $(RCS_FIND_IGNORE) \
\( -name config -o -name 'asm-*' \) -prune \
-o -name '*.[chS]' -print; \
find include/asm-$(ARCH) $(RCS_FIND_IGNORE) \
-name '*.[chS]' -print; \
find include/asm-generic $(RCS_FIND_IGNORE) \
-name '*.[chS]' -print )
endef
quiet_cmd_TAGS = MAKE $@
cmd_TAGS = $(all-sources) | etags -
# Exuberant ctags works better with -I
quiet_cmd_tags = MAKE $@
define cmd_tags
rm -f $@; \
CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_NOVERS"`; \
$(all-sources) | xargs ctags $$CTAGSF -a
endef
TAGS: FORCE
$(call cmd,TAGS)
tags: FORCE
$(call cmd,tags)
# Brief documentation of the typical targets used
# ---------------------------------------------------------------------------
help:
@echo 'Cleaning targets:'
@echo ' clean - remove most generated files but keep the config'
@echo ' mrproper - remove all generated files + config + various backup files'
@echo ''
@echo 'Configuration targets:'
@echo ' oldconfig - Update current config utilising a line-oriented program'
@echo ' menuconfig - Update current config utilising a menu based program'
@echo ' xconfig - Update current config utilising a X-based program'
@echo ' defconfig - New config with default answer to all options'
@echo ' allmodconfig - New config selecting modules when possible'
@echo ' allyesconfig - New config where all options are accepted with yes'
@echo ' allnoconfig - New minimal config'
@echo ''
@echo 'Other generic targets:'
@echo ' all - Build all targets marked with [*]'
@echo ' dep - Create module version information'
@echo '* vmlinux - Build the bare kernel'
@echo '* modules - Build all modules'
@echo ' dir/file.[ois]- Build specified target only'
@echo ' rpm - Build a kernel as an RPM package'
@echo ' tags/TAGS - Generate tags file for editors'
@echo ''
@echo 'Documentation targets:'
@$(MAKE) --no-print-directory -f Documentation/DocBook/Makefile dochelp
@echo ''
@echo 'Architecture specific targets ($(ARCH)):'
@$(if $(archhelp),$(archhelp),\
echo ' No architecture specific help defined for $(ARCH)')
@echo ''
@echo 'Execute "make" or "make all" to build all targets marked with [*] '
@echo 'For further info browse Documentation/kbuild/*'
# Documentation targets
# ---------------------------------------------------------------------------
sgmldocs psdocs pdfdocs htmldocs: scripts
$(Q)$(MAKE) $(build)=Documentation/DocBook $@
# Scripts to check various things for consistency
# ---------------------------------------------------------------------------
checkconfig:
find * $(RCS_FIND_IGNORE) \
-name '*.[hcS]' -type f -print | sort \
| xargs $(PERL) -w scripts/checkconfig.pl
checkhelp:
find * $(RCS_FIND_IGNORE) \
-name [cC]onfig.in -print | sort \
| xargs $(PERL) -w scripts/checkhelp.pl
checkincludes:
find * $(RCS_FIND_IGNORE) \
-name '*.[hcS]' -type f -print | sort \
| xargs $(PERL) -w scripts/checkincludes.pl
else # ifneq ($(filter-out $(noconfig_targets),$(MAKECMDGOALS)),)
# We're called with both targets which do and do not need
# .config included. Handle them one after the other.
# ===========================================================================
%:: FORCE
$(Q)$(MAKE) $@
endif # ifeq ($(filter-out $(noconfig_targets),$(MAKECMDGOALS)),)
endif # ifdef include_config
# FIXME Should go into a make.lib or something
# ===========================================================================
a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) $(NOSTDINC_FLAGS) \
$(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
quiet_cmd_as_s_S = CPP $@
cmd_as_s_S = $(CPP) $(a_flags) -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),)
include $(cmd_files)
endif
# execute the command and also postprocess generated .d dependencies
# file
if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
$(filter-out $(cmd_$(1)),$(cmd_$@))\
$(filter-out $(cmd_$@),$(cmd_$(1)))),\
@set -e; \
$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))';) \
$(cmd_$(1)); \
scripts/fixdep $(depfile) $@ '$(cmd_$(1))' > $(@D)/.$(@F).tmp; \
rm -f $(depfile); \
mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd)
# Usage: $(call if_changed_rule,foo)
# will check if $(cmd_foo) changed, or any of the prequisites changed,
# and if so will execute $(rule_foo)
if_changed_rule = $(if $(strip $? \
$(filter-out $(cmd_$(1)),$(cmd_$(@F)))\
$(filter-out $(cmd_$(@F)),$(cmd_$(1)))),\
@$(rule_$(1)))
# If quiet is set, only print short version of command
cmd = @$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
define update-if-changed
if [ -r $@ ] && cmp -s $@ $@.tmp; then \
echo ' (unchanged)'; \
rm -f $@.tmp; \
else \
echo ' (updated)'; \
mv -f $@.tmp $@; \
fi
endef
# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
# Usage:
# $(Q)$(MAKE) $(build)=dir
build := -f scripts/Makefile.build obj
# Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
# Usage:
# $(Q)$(MAKE) $(clean)=dir
clean := -f scripts/Makefile.clean obj
# $(call descend,<dir>,<target>)
# Recursively call a sub-make in <dir> with target <target>
# Usage is deprecated, because make do not see this as an invocation of make.
descend =$(Q)$(MAKE) -f scripts/Makefile.build obj=$(1) $(2)
FORCE: