VERSION = 2
PATCHLEVEL = 6
-SUBLEVEL = 16
+SUBLEVEL = 17
EXTRAVERSION =-rc6
-NAME=Sliding Snow Leopard
+NAME=Crazed Snow-Weasel
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
endif
# That's our default target when none is given on the command line
-.PHONY: _all
+PHONY := _all
_all:
ifneq ($(KBUILD_OUTPUT),)
$(if $(KBUILD_OUTPUT),, \
$(error output directory "$(saved-output)" does not exist))
-.PHONY: $(MAKECMDGOALS)
+PHONY += $(MAKECMDGOALS)
$(filter-out _all,$(MAKECMDGOALS)) _all:
$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
# If building an external module we do not care about the all: rule
# but instead _all depend on modules
-.PHONY: all
+PHONY += all
ifeq ($(KBUILD_EXTMOD),)
_all: all
else
src := $(srctree)
obj := $(objtree)
-VPATH := $(srctree)
+VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
export srctree objtree VPATH TOPDIR
SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
-e s/arm.*/arm/ -e s/sa110/arm/ \
-e s/s390x/s390/ -e s/parisc64/parisc/ \
- -e s/ppc.*/powerpc/ )
+ -e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
# Cross compiling and selecting different set of gcc/bin-utils
# ---------------------------------------------------------------------------
# Architecture as present in compile.h
UTS_MACHINE := $(ARCH)
+KCONFIG_CONFIG ?= .config
+
# SHELL used by kbuild
CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
else if [ -x /bin/bash ]; then echo /bin/bash; \
export quiet Q KBUILD_VERBOSE
-######
-# cc support functions to be used (only) in arch/$(ARCH)/Makefile
-# See documentation in Documentation/kbuild/makefiles.txt
-
-# as-option
-# Usage: cflags-y += $(call as-option, -Wa$(comma)-isa=foo,)
-
-as-option = $(shell if $(CC) $(CFLAGS) $(1) -Wa,-Z -c -o /dev/null \
- -xassembler /dev/null > /dev/null 2>&1; then echo "$(1)"; \
- else echo "$(2)"; fi ;)
-
-# cc-option
-# Usage: cflags-y += $(call cc-option, -march=winchip-c6, -march=i586)
-
-cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
- > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
-
-# cc-option-yn
-# Usage: flag := $(call cc-option-yn, -march=winchip-c6)
-cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
- > /dev/null 2>&1; then echo "y"; else echo "n"; fi;)
-
-# cc-option-align
-# Prefix align with either -falign or -malign
-cc-option-align = $(subst -functions=0,,\
- $(call cc-option,-falign-functions=0,-malign-functions=0))
-
-# cc-version
-# Usage gcc-ver := $(call cc-version $(CC))
-cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \
- $(if $(1), $(1), $(CC)))
-
# Look for make include files relative to root of kernel src
MAKEFLAGS += --include-dir=$(srctree)
# We need some generic definitions
include $(srctree)/scripts/Kbuild.include
-# For maximum performance (+ possibly random breakage, uncomment
-# the following)
-
-#MAKEFLAGS += -rR
+# Do not use make's built-in rules and variables
+# This increases performance and avoid hard-to-debug behaviour
+MAKEFLAGS += -rR
# Make variables (CC, etc...)
CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
- -fno-strict-aliasing -fno-common \
- -ffreestanding
+ -fno-strict-aliasing -fno-common
AFLAGS := -D__ASSEMBLY__
-# Read KERNELRELEASE from .kernelrelease (if it exists)
-KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null)
+# 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 \
# Rules shared between *config targets and build targets
# Basic helpers built in scripts/
-.PHONY: scripts_basic
+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 generate a Makefile to be placed in output directory, if
-# using a seperate output directory. This allows convinient use
-# of make in output directory
+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:
- $(Q)if test ! $(srctree) -ef $(objtree); then \
- $(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
- $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) \
- > $(objtree)/Makefile; \
- echo ' GEN $(objtree)/Makefile'; \
- fi
+ifneq ($(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
# 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%
+ cscope TAGS tags help %docs check% \
+ kernelrelease kernelversion
config-targets := 0
mixed-targets := 0
export KBUILD_DEFCONFIG
config %config: scripts_basic outputmakefile FORCE
- $(Q)mkdir -p include/linux
+ $(Q)mkdir -p include/linux include/config
$(Q)$(MAKE) $(build)=scripts/kconfig $@
- $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
else
# ===========================================================================
# Additional helpers built in scripts/
# Carefully list dependencies so we do not try to build scripts twice
# in parrallel
-.PHONY: scripts
-scripts: scripts_basic include/config/MARKER
+PHONY += scripts
+scripts: scripts_basic include/config/auto.conf
$(Q)$(MAKE) $(build)=$(@)
-scripts_basic: include/linux/autoconf.h
-
# Objects we will link into vmlinux / subdirs we need to visit
init-y := init/
drivers-y := drivers/ sound/
# Read in dependencies to all Kconfig* files, make sure to run
# oldconfig if changes are detected.
--include .kconfig.d
-
-include .config
+-include include/config/auto.conf.cmd
+-include include/config/auto.conf
-# 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: ;
+$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
-# If .config is newer than include/linux/autoconf.h, someone tinkered
+# If .config is newer than include/config/auto.conf, someone tinkered
# with it and forgot to run make oldconfig.
-# If kconfig.d is missing then we are probarly in a cleaned tree so
+# if auto.conf.cmd 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/linux/autoconf.h: .kconfig.d .config
- $(Q)mkdir -p include/linux
+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/linux/autoconf.h: ;
+include/config/auto.conf: ;
endif
# The all: target is the default when no target is given on the
CFLAGS += -O2
endif
-#Add align options if CONFIG_CC_* is not equal to 0
-add-align = $(if $(filter-out 0,$($(1))),$(cc-option-align)$(2)=$($(1)))
-CFLAGS += $(call add-align,CONFIG_CC_ALIGN_FUNCTIONS,-functions)
-CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LABELS,-labels)
-CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
-CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
-
ifdef CONFIG_FRAME_POINTER
CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
else
CFLAGS += -fomit-frame-pointer
endif
+ifdef CONFIG_UNWIND_INFO
+CFLAGS += -fasynchronous-unwind-tables
+endif
+
ifdef CONFIG_DEBUG_INFO
CFLAGS += -g
endif
# make menuconfig etc.
# Error messages still appears in the original language
-.PHONY: $(vmlinux-dirs)
+PHONY += $(vmlinux-dirs)
$(vmlinux-dirs): prepare scripts
$(Q)$(MAKE) $(build)=$@
# Build the kernel release string
-# The KERNELRELEASE is stored in a file named .kernelrelease
+# The KERNELRELEASE is stored in a file named include/config/kernel.release
# to be used when executing for example make install or make modules_install
#
# Take the contents of any files called localversion* and the config
localver-full = $(localver)$(localver-auto)
-# Store (new) KERNELRELASE string in .kernelrelease
+# Store (new) KERNELRELASE string in include/config/kernel.release
kernelrelease = $(KERNELVERSION)$(localver-full)
-.kernelrelease: FORCE
+include/config/kernel.release: include/config/auto.conf FORCE
$(Q)rm -f $@
$(Q)echo $(kernelrelease) > $@
# version.h and scripts_basic is processed / created.
# Listed in dependency order
-.PHONY: prepare archprepare prepare0 prepare1 prepare2 prepare3
+PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
# prepare-all is deprecated, use prepare as valid replacement
-.PHONY: prepare-all
+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 $(srctree)
# 2) Create the include2 directory, used for the second asm symlink
-prepare3: .kernelrelease
+prepare3: include/config/kernel.release
ifneq ($(KBUILD_SRC),)
@echo ' Using $(srctree) as source for kernel'
- $(Q)if [ -f $(srctree)/.config ]; then \
+ $(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.";\
/bin/false; \
prepare2: prepare3 outputmakefile
prepare1: prepare2 include/linux/version.h include/asm \
- include/config/MARKER
+ include/config/auto.conf
ifneq ($(KBUILD_MODULES),)
- $(Q)rm -rf $(MODVERDIR)
$(Q)mkdir -p $(MODVERDIR)
+ $(Q)rm -f $(MODVERDIR)/*
endif
archprepare: prepare1 scripts_basic
export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
-# 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) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@D) $(@:.ko=.o)
- $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
-%/: scripts prepare FORCE
- $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@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.
$(Q)if [ ! -d include ]; then mkdir -p include; fi;
@ln -fsn asm-$(ARCH) $@
-# Split autoconf.h into include/linux/config/*
-
-include/config/MARKER: scripts/basic/split-include include/linux/autoconf.h
- @echo ' SPLIT include/linux/autoconf.h -> include/config/*'
- @scripts/basic/split-include include/linux/autoconf.h include/config
- @touch $@
-
# Generate some files
# ---------------------------------------------------------------------------
)
endef
-include/linux/version.h: $(srctree)/Makefile .config .kernelrelease FORCE
+include/linux/version.h: $(srctree)/Makefile include/config/kernel.release FORCE
$(call filechk,version.h)
# ---------------------------------------------------------------------------
-.PHONY: depend dep
+PHONY += depend dep
depend dep:
@echo '*** Warning: make $@ is unnecessary now.'
# Build modules
-.PHONY: modules
+PHONY += modules
modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
@echo ' Building modules, stage 2.';
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
# Target to prepare building external modules
-.PHONY: modules_prepare
+PHONY += modules_prepare
modules_prepare: prepare scripts
# Target to install modules
-.PHONY: modules_install
+PHONY += modules_install
modules_install: _modinst_ _modinst_post
-.PHONY: _modinst_
+PHONY += _modinst_
_modinst_:
@if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
echo "Warning: you may need to install module-init-tools"; \
else
depmod_opts := -b $(INSTALL_MOD_PATH) -r
endif
-.PHONY: _modinst_post
+PHONY += _modinst_post
_modinst_post: _modinst_
if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
MRPROPER_DIRS += include/config include2
MRPROPER_FILES += .config .config.old include/asm .version .old_version \
include/linux/autoconf.h include/linux/version.h \
- .kernelrelease Module.symvers tags TAGS cscope*
+ Module.symvers tags TAGS cscope*
# clean - Delete most, but leave enough to build external modules
#
clean: rm-files := $(CLEAN_FILES)
clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
-.PHONY: $(clean-dirs) clean archclean
+PHONY += $(clean-dirs) clean archclean
$(clean-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
-.PHONY: $(mrproper-dirs) mrproper archmrproper
+PHONY += $(mrproper-dirs) mrproper archmrproper
$(mrproper-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
# distclean
#
-.PHONY: distclean
+PHONY += distclean
distclean: mrproper
@find $(srctree) $(RCS_FIND_IGNORE) \
# rpm target kept for backward compatibility
package-dir := $(srctree)/scripts/package
-.PHONY: %-pkg rpm
-
-%pkg: FORCE
- $(Q)$(MAKE) -f $(package-dir)/Makefile $@
-rpm: FORCE
- $(Q)$(MAKE) -f $(package-dir)/Makefile $@
+%pkg: include/config/kernel.release FORCE
+ $(Q)$(MAKE) $(build)=$(package-dir) $@
+rpm: include/config/kernel.release FORCE
+ $(Q)$(MAKE) $(build)=$(package-dir) $@
# Brief documentation of the typical targets used
@echo ' kernelversion - Output the version stored in Makefile'
@echo ''
@echo 'Static analysers'
- @echo ' buildcheck - List dangling references to vmlinux discarded sections'
- @echo ' and init sections from non-init sections'
@echo ' checkstack - Generate a list of stack hogs'
@echo ' namespacecheck - Name space analysis on compiled kernel'
@echo ''
@echo 'Kernel packaging:'
- @$(MAKE) -f $(package-dir)/Makefile help
+ @$(MAKE) $(build)=$(package-dir) help
@echo ''
@echo 'Documentation targets:'
@$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
# We are always building modules
KBUILD_MODULES := 1
-.PHONY: crmodverdir
+PHONY += crmodverdir
crmodverdir:
$(Q)mkdir -p $(MODVERDIR)
+ $(Q)rm -f $(MODVERDIR)/*
-.PHONY: $(objtree)/Module.symvers
+PHONY += $(objtree)/Module.symvers
$(objtree)/Module.symvers:
@test -e $(objtree)/Module.symvers || ( \
echo; \
echo )
module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
-.PHONY: $(module-dirs) modules
+PHONY += $(module-dirs) modules
$(module-dirs): crmodverdir $(objtree)/Module.symvers
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
@echo ' Building modules, stage 2.';
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
-.PHONY: modules_install
-modules_install:
+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
+PHONY += $(clean-dirs) clean
$(clean-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
@echo ' modules_install - install the module'
@echo ' clean - remove generated files in module directory only'
@echo ''
+
+# Dummies...
+PHONY += prepare scripts
+prepare: ;
+scripts: ;
endif # KBUILD_EXTMOD
# Generate tags for editors
-name '*.[hcS]' -type f -print | sort \
| xargs $(PERL) -w scripts/checkversion.pl
-buildcheck:
- $(PERL) $(srctree)/scripts/reference_discarded.pl
- $(PERL) $(srctree)/scripts/reference_init.pl
-
namespacecheck:
$(PERL) $(srctree)/scripts/namespace.pl
endif #ifeq ($(config-targets),1)
endif #ifeq ($(mixed-targets),1)
-.PHONY: checkstack
+PHONY += checkstack kernelrelease kernelversion
checkstack:
$(OBJDUMP) -d vmlinux $$(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))
+ $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
+ $(error kernelrelease not valid - run 'make prepare' 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)
+%.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
# ===========================================================================
endif # skip-makefile
+PHONY += FORCE
FORCE:
+
+
+# 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)