| VERSION = 2 |
| PATCHLEVEL = 5 |
| SUBLEVEL = 73 |
| 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 := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ |
| -e s/arm.*/arm/ -e s/sa110/arm/ \ |
| -e s/s390x/s390/ ) |
| |
| # Remove hyphens since they have special meaning in RPM filenames |
| KERNELPATH=kernel-$(subst -,,$(KERNELRELEASE)) |
| |
| # 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 |
| |
| ARCH ?= $(SUBARCH) |
| CROSS_COMPILE ?= |
| |
| # 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) |
| TOPDIR := $(CURDIR) |
| |
| HOSTCC = gcc |
| HOSTCXX = g++ |
| HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer |
| HOSTCXXFLAGS = -O2 |
| |
| |
| # That's our default target when none is given on the command line |
| # Note that 'modules' will be added as a prerequisite as well, |
| # in the CONFIG_MODULES part below |
| |
| all: vmlinux |
| |
| # Decide whether to build built-in, modular, or both. |
| # Normally, just do built-in. |
| |
| KBUILD_MODULES := |
| KBUILD_BUILTIN := 1 |
| |
| # If we have only "make modules", don't compile built-in objects. |
| # When we're building modules with modversions, we need to consider |
| # the built-in objects during the descend as well, in order to |
| # make sure the checksums are uptodate before we record them. |
| |
| ifeq ($(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 modules,$(MAKECMDGOALS)),) |
| KBUILD_MODULES := 1 |
| endif |
| |
| ifeq ($(MAKECMDGOALS),) |
| KBUILD_MODULES := 1 |
| endif |
| |
| export KBUILD_MODULES KBUILD_BUILTIN KBUILD_VERBOSE KBUILD_CHECKSRC |
| |
| # 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 $(silent_cmd_cc_o_c) doesn't exist. |
| |
| # To put more focus on warnings, less verbose as default |
| |
| ifdef V |
| ifeq ("$(origin V)", "command line") |
| KBUILD_VERBOSE = $(V) |
| endif |
| endif |
| ifndef KBUILD_VERBOSE |
| KBUILD_VERBOSE = 0 |
| endif |
| |
| ifdef C |
| ifeq ("$(origin C)", "command line") |
| KBUILD_CHECKSRC = $(C) |
| endif |
| endif |
| ifndef KBUILD_CHECKSRC |
| KBUILD_CHECKSRC = 0 |
| endif |
| |
| |
| MAKEFLAGS += --no-print-directory |
| |
| # For maximum performance (+ possibly random breakage, uncomment |
| # the following) |
| |
| #MAKEFLAGS += -rR |
| |
| # If the user wants quiet mode, echo short versions of the commands |
| # only |
| |
| ifeq ($(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 |
| RPM := $(shell if [ -x "/usr/bin/rpmbuild" ]; then echo rpmbuild; \ |
| else echo rpm; fi) |
| GENKSYMS = scripts/genksyms/genksyms |
| DEPMOD = /sbin/depmod |
| KALLSYMS = scripts/kallsyms |
| PERL = perl |
| CHECK = sparse |
| 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 CHECK |
| |
| export CPPFLAGS NOSTDINC_FLAGS OBJCOPYFLAGS LDFLAGS |
| export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE |
| export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
| |
| export MODVERDIR := .tmp_versions |
| |
| # The temporary file to save gcc -MD generated dependencies must not |
| # contain a comma |
| comma := , |
| depfile = $(subst $(comma),_,$(@D)/.$(@F).d) |
| |
| noconfig_targets := xconfig gconfig menuconfig config oldconfig randconfig \ |
| defconfig allyesconfig allnoconfig allmodconfig \ |
| clean mrproper distclean rpm \ |
| help tags TAGS cscope 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-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
| libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) |
| libs-y := $(libs-y1) $(libs-y2) |
| |
| 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 |
| |
| 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. |
| head-y += $(HEAD) |
| vmlinux-objs := $(head-y) $(init-y) $(core-y) $(libs-y) $(drivers-y) $(net-y) |
| |
| quiet_cmd_vmlinux__ = LD $@ |
| define cmd_vmlinux__ |
| $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) $(head-y) $(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 |
| |
| define rule_vmlinux__ |
| set -e; \ |
| $(if $(filter .tmp_kallsyms%,$^),, \ |
| echo ' GEN .version'; \ |
| . $(srctree)/scripts/mkversion > .tmp_version; \ |
| mv -f .tmp_version .version; \ |
| $(MAKE) $(build)=init; \ |
| ) \ |
| $(if $($(quiet)cmd_vmlinux__), \ |
| echo ' $($(quiet)cmd_vmlinux__)' &&) \ |
| $(cmd_vmlinux__); \ |
| echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd |
| endef |
| |
| define rule_vmlinux |
| $(rule_vmlinux__); \ |
| $(NM) $@ | grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | sort > System.map |
| endef |
| |
| 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 us .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 $< | $(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): 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 |
| ifdef KBUILD_MODULES |
| ifeq ($(origin SUBDIRS),file) |
| $(Q)rm -rf $(MODVERDIR) |
| else |
| @echo '*** Warning: Overriding SUBDIRS on the command line can cause' |
| @echo '*** inconsistencies' |
| endif |
| endif |
| $(if $(CONFIG_MODULES),$(Q)mkdir -p $(MODVERDIR)) |
| |
| # This can be used by arch/$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) $@ |
| %/: 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 $(ARCH) changes. That's |
| # hard to detect, but I suppose "make mrproper" is a good idea |
| # before switching between archs anyway. |
| |
| include/asm: |
| @echo ' Making asm->asm-$(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 scripts/fixdep |
| $(Q)$(MAKE) $(build)=scripts/kconfig scripts/kconfig/conf |
| ./scripts/kconfig/conf -s arch/$(ARCH)/Kconfig |
| |
| # Generate some files |
| # --------------------------------------------------------------------------- |
| |
| # version.h changes when $(KERNELRELEASE) etc change, as defined in |
| # this Makefile |
| |
| uts_len := 64 |
| |
| define filechk_version.h |
| if expr length "$(KERNELRELEASE)" \> $(uts_len) >/dev/null ; then \ |
| echo '"$(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 |
| |
| include/linux/version.h: Makefile |
| $(call filechk,version.h) |
| |
| # --------------------------------------------------------------------------- |
| |
| .PHONY: depend dep |
| depend dep: |
| @echo '*** Warning: make $@ is unnecessary now.' |
| |
| # --------------------------------------------------------------------------- |
| # Modules |
| |
| ifdef CONFIG_MODULES |
| |
| # By default, build modules as well |
| |
| all: modules |
| |
| # Build modules |
| |
| .PHONY: modules |
| modules: $(SUBDIRS) $(if $(KBUILD_BUILTIN),vmlinux) |
| @echo ' Building modules, stage 2.'; |
| $(Q)$(MAKE) -rR -f scripts/Makefile.modpost |
| |
| # Install modules |
| |
| .PHONY: modules_install |
| modules_install: _modinst_ _modinst_post |
| |
| .PHONY: _modinst_ |
| _modinst_: |
| @rm -rf $(MODLIB)/kernel |
| @rm -f $(MODLIB)/build |
| @mkdir -p $(MODLIB)/kernel |
| @ln -s $(TOPDIR) $(MODLIB)/build |
| $(Q)$(MAKE) -rR -f scripts/Makefile.modinst |
| |
| # If System.map exists, run depmod. This deliberately does not have a |
| # dependency on System.map since that would run the dependency tree on |
| # vmlinux. This depmod is only for convenience to give the initial |
| # boot a modules.dep even before / is mounted read-write. However the |
| # boot script depmod is the master version. |
| ifeq "$(strip $(INSTALL_MOD_PATH))" "" |
| depmod_opts := |
| else |
| depmod_opts := -b $(INSTALL_MOD_PATH) -r |
| endif |
| .PHONY: _modinst_post |
| _modinst_post: _modinst_ |
| if [ -r System.map ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi |
| |
| else # CONFIG_MODULES |
| |
| # Modules not configured |
| # --------------------------------------------------------------------------- |
| |
| modules modules_install: FORCE |
| @echo |
| @echo "The present kernel configuration has modules disabled." |
| @echo "Type 'make config' and enable loadable module support." |
| @echo "Then build a kernel with module support enabled." |
| @echo |
| @exit 1 |
| |
| endif # CONFIG_MODULES |
| |
| # Generate asm-offsets.h |
| # --------------------------------------------------------------------------- |
| |
| define filechk_gen-asm-offsets |
| (set -e; \ |
| echo "#ifndef __ASM_OFFSETS_H__"; \ |
| echo "#define __ASM_OFFSETS_H__"; \ |
| echo "/*"; \ |
| echo " * DO NOT MODIFY."; \ |
| echo " *"; \ |
| echo " * This file was generated by arch/$(ARCH)/Makefile"; \ |
| echo " *"; \ |
| echo " */"; \ |
| echo ""; \ |
| sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ |
| echo ""; \ |
| echo "#endif" ) |
| endef |
| |
| 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 gconfig menuconfig config \ |
| make_with_config rpm |
| |
| scripts/kconfig/conf scripts/kconfig/mconf scripts/kconfig/qconf scripts/kconfig/gconf: scripts/fixdep FORCE |
| $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
| |
| xconfig: scripts/kconfig/qconf |
| ./scripts/kconfig/qconf arch/$(ARCH)/Kconfig |
| |
| gconfig: scripts/kconfig/gconf |
| ./scripts/kconfig/gconf 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 are 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 cscope kernel.spec \ |
| .tmp* |
| |
| # Directories removed with 'make mrproper' |
| MRPROPER_DIRS += \ |
| $(MODVERDIR) \ |
| .tmp_export-objs \ |
| include/config \ |
| include/linux/modules |
| |
| # clean - Delete all intermediate files |
| # |
| clean-dirs += $(addprefix _clean_,$(ALL_SUBDIRS) Documentation/DocBook scripts) |
| .PHONY: $(clean-dirs) clean archclean mrproper archmrproper distclean |
| $(clean-dirs): |
| $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
| |
| quiet_cmd_rmclean = RM $$(CLEAN_FILES) |
| cmd_rmclean = rm -f $(CLEAN_FILES) |
| clean: archclean $(clean-dirs) |
| $(call cmd,rmclean) |
| @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 |
| |
| # 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_cscope = MAKE $@ |
| cmd_cscope = $(all-sources) | cscope -k -b -i - |
| |
| 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 |
| |
| cscope: FORCE |
| $(call cmd,cscope) |
| |
| TAGS: FORCE |
| $(call cmd,TAGS) |
| |
| tags: FORCE |
| $(call cmd,tags) |
| |
| # RPM target |
| # --------------------------------------------------------------------------- |
| |
| # If you do a make spec before packing the tarball you can rpm -ta it |
| |
| spec: |
| . $(srctree)/scripts/mkspec >kernel.spec |
| |
| # Build a tar ball, generate an rpm from it and pack the result |
| # There are 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 |
| |
| # 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 QT based front-end' |
| @echo ' gconfig - Update current config utilising a GTK based front-end' |
| @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 '* vmlinux - Build the bare kernel' |
| @echo '* modules - Build all modules' |
| @echo ' modules_install - Install all modules' |
| @echo ' dir/ - Build all files in dir and below' |
| @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 ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' |
| @echo ' make C=1 [targets] Check all c source with checker tool' |
| @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/docproc FORCE |
| $(Q)$(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 |
| |
| 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 ' $(subst ','\'',$($(quiet)cmd_$(1)))';) \ |
| $(cmd_$(1)); \ |
| scripts/fixdep $(depfile) $@ '$(subst $$,$$$$,$(subst ','\'',$(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)) |
| |
| # filechk is used to check if the content of a generated file is updated. |
| # Sample usage: |
| # define filechk_sample |
| # echo $KERNELRELEASE |
| # endef |
| # version.h : Makefile |
| # $(call filechk,sample) |
| # The rule defined shall write to stdout the content of the new file. |
| # The existing file will be compared with the new one. |
| # - If no file exist it is created |
| # - If the content differ the new file is used |
| # - If they are equal no change, and no timestamp update |
| |
| define filechk |
| @set -e; \ |
| echo ' CHK $@'; \ |
| $(filechk_$(1)) < $< > $@.tmp; \ |
| if [ -r $@ ] && cmp -s $@ $@.tmp; then \ |
| rm -f $@.tmp; \ |
| else \ |
| echo ' UPD $@'; \ |
| mv -f $@.tmp $@; \ |
| fi |
| endef |
| |
| # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=dir |
| # Usage: |
| # $(Q)$(MAKE) $(build)=dir |
| build := -f scripts/Makefile.build obj |
| |
| # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
| # Usage: |
| # $(Q)$(MAKE) $(clean)=dir |
| clean := -f scripts/Makefile.clean obj |
| |
| # $(call descend,<dir>,<target>) |
| # Recursively call a sub-make in <dir> with target <target> |
| # Usage is deprecated, because make does not see this as an invocation of make. |
| descend =$(Q)$(MAKE) -f scripts/Makefile.build obj=$(1) $(2) |
| |
| FORCE: |