VERSION = 2 PATCHLEVEL = 5 SUBLEVEL = 59 EXTRAVERSION = -ruby # *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 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)' # We need to build init/vermagic.o before descending since all modules # (*.ko) need it already ifdef CONFIG_MODULES prepare: init/vermagic.o init/vermagic.o: include/linux/version.h endif # 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 "; \ cd .tmp_export-objs >/dev/null; \ for f in `find modules -name \*.ver -print | sort`; do \ echo "#include "; \ 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 # $(call descend,,) # Recursively call a sub-make in with target # Usage is deprecated, because make do not see this as an invocation of make. descend =$(Q)$(MAKE) -f scripts/Makefile.build obj=$(1) $(2) FORCE: