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VERSION = 2 PATCHLEVEL = 6 |
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SUBLEVEL = 18 EXTRAVERSION = -rc1 |
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NAME=Crazed Snow-Weasel |
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# *DOCUMENTATION* # To see a list of typical targets execute "make help" # More info can be located in ./README # Comments in this file are targeted only to the developer, do not # expect to learn how to build the kernel reading this file. # Do not print "Entering directory ..." MAKEFLAGS += --no-print-directory # We are using a recursive build, so we need to do a little thinking # to get the ordering right. # # Most importantly: sub-Makefiles should only ever modify files in # their own directory. If in some directory we have a dependency on # a file in another dir (which doesn't happen often, but it's often # unavoidable when linking the built-in.o targets which finally # turn into 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. # To put more focus on warnings, be less verbose as default # Use 'make V=1' to see the full commands ifdef V ifeq ("$(origin V)", "command line") KBUILD_VERBOSE = $(V) endif endif ifndef KBUILD_VERBOSE KBUILD_VERBOSE = 0 endif |
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# Call checker as part of compilation of C files # Use 'make C=1' to enable checking (sparse, by default) # Override with 'make C=1 CHECK=checker_executable CHECKFLAGS=....' |
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ifdef C ifeq ("$(origin C)", "command line") KBUILD_CHECKSRC = $(C) endif endif ifndef KBUILD_CHECKSRC KBUILD_CHECKSRC = 0 endif # Use make M=dir to specify directory of external module to build # Old syntax make ... SUBDIRS=$PWD is still supported # Setting the environment variable KBUILD_EXTMOD take precedence ifdef SUBDIRS KBUILD_EXTMOD ?= $(SUBDIRS) endif ifdef M ifeq ("$(origin M)", "command line") KBUILD_EXTMOD := $(M) endif endif # kbuild supports saving output files in a separate directory. # To locate output files in a separate directory two syntaxes are supported. # In both cases the working directory must be the root of the kernel src. # 1) O= # Use "make O=dir/to/store/output/files/" |
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# |
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# 2) Set KBUILD_OUTPUT # Set the environment variable KBUILD_OUTPUT to point to the directory # where the output files shall be placed. # export KBUILD_OUTPUT=dir/to/store/output/files/ # make # # The O= assignment takes precedence over the KBUILD_OUTPUT environment # variable. # KBUILD_SRC is set on invocation of make in OBJ directory # KBUILD_SRC is not intended to be used by the regular user (for now) ifeq ($(KBUILD_SRC),) # OK, Make called in directory where kernel src resides # Do we want to locate output files in a separate directory? ifdef O ifeq ("$(origin O)", "command line") KBUILD_OUTPUT := $(O) endif endif # That's our default target when none is given on the command line |
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PHONY := _all |
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_all: ifneq ($(KBUILD_OUTPUT),) # Invoke a second make in the output directory, passing relevant variables # check that the output directory actually exists saved-output := $(KBUILD_OUTPUT) KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) $(if $(KBUILD_OUTPUT),, \ $(error output directory "$(saved-output)" does not exist)) |
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PHONY += $(MAKECMDGOALS) |
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$(filter-out _all,$(MAKECMDGOALS)) _all: |
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$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ KBUILD_SRC=$(CURDIR) \ |
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KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@ |
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# Leave processing to above invocation of make skip-makefile := 1 endif # ifneq ($(KBUILD_OUTPUT),) endif # ifeq ($(KBUILD_SRC),) # We process the rest of the Makefile if this is the final invocation of make ifeq ($(skip-makefile),) # If building an external module we do not care about the all: rule # but instead _all depend on modules |
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PHONY += all |
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ifeq ($(KBUILD_EXTMOD),) _all: all else _all: modules endif srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) TOPDIR := $(srctree) # FIXME - TOPDIR is obsolete, use srctree/objtree objtree := $(CURDIR) src := $(srctree) obj := $(objtree) |
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VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
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export srctree objtree VPATH TOPDIR |
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# 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/ \ |
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-e s/s390x/s390/ -e s/parisc64/parisc/ \ |
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-e s/ppc.*/powerpc/ -e s/mips.*/mips/ ) |
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# 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) |
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KCONFIG_CONFIG ?= .config |
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# 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) |
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HOSTCC = gcc HOSTCXX = g++ HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer HOSTCXXFLAGS = -O2 |
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|
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# Decide whether to build built-in, modular, or both. # Normally, just do built-in. |
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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 |
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# make sure the checksums are up to date before we record them. |
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ifeq ($(MAKECMDGOALS),modules) KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) endif # If we have "make <whatever> modules", compile modules # in addition to whatever we do anyway. # Just "make" or "make all" shall build modules as well ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) KBUILD_MODULES := 1 endif ifeq ($(MAKECMDGOALS),) KBUILD_MODULES := 1 endif |
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export KBUILD_MODULES KBUILD_BUILTIN |
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export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD # Beautify output # --------------------------------------------------------------------------- # # Normally, we echo the whole command before executing it. By making # that echo $($(quiet)$(cmd)), we now have the possibility to set # $(quiet) to choose other forms of output instead, e.g. # # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< # # If $(quiet) is empty, the whole command will be printed. # If it is set to "quiet_", only the short version will be printed. |
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# If it is set to "silent_", nothing will be printed at all, since |
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# the variable $(silent_cmd_cc_o_c) doesn't exist. # |
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# A simple variant is to prefix commands with $(Q) - that's useful |
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# for commands that shall be hidden in non-verbose mode. # # $(Q)ln $@ :< # # If KBUILD_VERBOSE equals 0 then the above command will be hidden. # If KBUILD_VERBOSE equals 1 then the above command is displayed. ifeq ($(KBUILD_VERBOSE),1) quiet = Q = else quiet=quiet_ Q = @ endif # If the user is running make -s (silent mode), suppress echoing of # commands ifneq ($(findstring s,$(MAKEFLAGS)),) quiet=silent_ endif export quiet Q KBUILD_VERBOSE |
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# Look for make include files relative to root of kernel src MAKEFLAGS += --include-dir=$(srctree) |
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# We need some generic definitions |
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include $(srctree)/scripts/Kbuild.include |
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# Do not use make's built-in rules and variables |
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# This increases performance and avoid hard-to-debug behavour |
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MAKEFLAGS += -rR |
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# 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 = scripts/genksyms/genksyms DEPMOD = /sbin/depmod KALLSYMS = scripts/kallsyms PERL = perl CHECK = sparse |
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CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF) |
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MODFLAGS = -DMODULE CFLAGS_MODULE = $(MODFLAGS) AFLAGS_MODULE = $(MODFLAGS) LDFLAGS_MODULE = -r CFLAGS_KERNEL = AFLAGS_KERNEL = # Use LINUXINCLUDE when you must reference the include/ directory. # Needed to be compatible with the O= option LINUXINCLUDE := -Iinclude \ |
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$(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ |
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-include include/linux/autoconf.h |
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CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) |
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CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -fno-strict-aliasing -fno-common |
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# Force gcc to behave correct even for buggy distributions CFLAGS += $(call cc-option, -fno-stack-protector-all \ -fno-stack-protector) |
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AFLAGS := -D__ASSEMBLY__ |
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# Read KERNELRELEASE from include/config/kernel.release (if it exists) KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) |
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KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) |
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export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
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export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
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export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE |
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export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE # When compiling out-of-tree modules, put MODVERDIR in the module # tree rather than in the kernel tree. The kernel tree might # even be read-only. export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
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# Files to ignore in find ... statements |
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RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git |
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# =========================================================================== # Rules shared between *config targets and build targets # Basic helpers built in scripts/ |
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PHONY += scripts_basic |
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scripts_basic: $(Q)$(MAKE) $(build)=scripts/basic |
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# To avoid any implicit rule to kick in, define an empty command. scripts/basic/%: scripts_basic ; |
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PHONY += outputmakefile |
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# outputmakefile generates a Makefile in the output directory, if using a # separate output directory. This allows convenient use of make in the # output directory. |
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outputmakefile: |
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ifneq ($(KBUILD_SRC),) $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) endif |
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# To make sure we do not include .config for any of the *config targets # catch them early, and hand them over to scripts/kconfig/Makefile # It is allowed to specify more targets when calling make, including # mixing *config targets and build targets. |
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# For example 'make oldconfig all'. |
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# Detect when mixed targets is specified, and make a second invocation # of make so .config is not included in this case either (for *config). no-dot-config-targets := clean mrproper distclean \ |
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cscope TAGS tags help %docs check% \ kernelrelease kernelversion |
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config-targets := 0 mixed-targets := 0 dot-config := 1 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) dot-config := 0 endif endif ifeq ($(KBUILD_EXTMOD),) ifneq ($(filter config %config,$(MAKECMDGOALS)),) config-targets := 1 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) mixed-targets := 1 endif endif endif ifeq ($(mixed-targets),1) # =========================================================================== # We're called with mixed targets (*config and build targets). # Handle them one by one. %:: FORCE $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ else ifeq ($(config-targets),1) # =========================================================================== # *config targets only - make sure prerequisites are updated, and descend # in scripts/kconfig to make the *config target # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. # KBUILD_DEFCONFIG may point out an alternative default configuration # used for 'make defconfig' include $(srctree)/arch/$(ARCH)/Makefile export KBUILD_DEFCONFIG |
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config %config: scripts_basic outputmakefile FORCE |
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$(Q)mkdir -p include/linux include/config |
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$(Q)$(MAKE) $(build)=scripts/kconfig $@ else # =========================================================================== # Build targets only - this includes vmlinux, arch specific targets, clean # targets and others. In general all targets except *config targets. ifeq ($(KBUILD_EXTMOD),) # Additional helpers built in scripts/ # Carefully list dependencies so we do not try to build scripts twice |
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# in parallel |
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PHONY += scripts |
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scripts: scripts_basic include/config/auto.conf |
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$(Q)$(MAKE) $(build)=$(@) |
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# 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/ endif # KBUILD_EXTMOD ifeq ($(dot-config),1) # In this section, we need .config # Read in dependencies to all Kconfig* files, make sure to run # oldconfig if changes are detected. |
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-include include/config/auto.conf.cmd -include include/config/auto.conf |
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# To avoid any implicit rule to kick in, define an empty command |
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$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
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# If .config is newer than include/config/auto.conf, someone tinkered |
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# with it and forgot to run make oldconfig. |
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# if auto.conf.cmd is missing then we are probably in a cleaned tree so |
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# we execute the config step to be sure to catch updated Kconfig files |
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include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
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ifeq ($(KBUILD_EXTMOD),) |
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$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig else |
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$(error kernel configuration not valid - run 'make prepare' in $(srctree) to update it) endif |
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else # Dummy target needed, because used as prerequisite |
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include/config/auto.conf: ; |
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endif # The all: target is the default when no target is given on the # command line. # This allow a user to issue only 'make' to build a kernel including modules |
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# Defaults vmlinux but it is usually overridden in the arch makefile |
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all: vmlinux ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE CFLAGS += -Os else CFLAGS += -O2 endif |
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ifdef CONFIG_FRAME_POINTER |
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CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,) |
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else CFLAGS += -fomit-frame-pointer endif |
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ifdef CONFIG_UNWIND_INFO CFLAGS += -fasynchronous-unwind-tables endif |
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ifdef CONFIG_DEBUG_INFO CFLAGS += -g endif include $(srctree)/arch/$(ARCH)/Makefile |
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# arch Makefile may override CC so keep this after arch Makefile is included |
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NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
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CHECKFLAGS += $(NOSTDINC_FLAGS) |
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# warn about C99 declaration after statement CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
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# disable pointer signed / unsigned warnings in gcc 4.0 |
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CFLAGS += $(call cc-option,-Wno-pointer-sign,) # Default kernel image to build when no specific target is given. |
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# KBUILD_IMAGE may be overruled on the command line or |
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# set in the environment # Also any assignments in arch/$(ARCH)/Makefile take precedence over # this default value export KBUILD_IMAGE ?= vmlinux # # INSTALL_PATH specifies where to place the updated kernel and system map # images. Default is /boot, but you can set it to other values export INSTALL_PATH ?= /boot # # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory # relocations required by build roots. This is not defined in the |
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# makefile but the argument can be passed to make if needed. |
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# |
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MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
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export MODLIB |
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# # INSTALL_MOD_STRIP, if defined, will cause modules to be # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then # the default option --strip-debug will be used. Otherwise, # INSTALL_MOD_STRIP will used as the options to the strip command. ifdef INSTALL_MOD_STRIP ifeq ($(INSTALL_MOD_STRIP),1) |
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mod_strip_cmd = $(STRIP) --strip-debug |
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else mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) endif # INSTALL_MOD_STRIP=1 else mod_strip_cmd = true endif # INSTALL_MOD_STRIP export mod_strip_cmd |
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ifeq ($(KBUILD_EXTMOD),) |
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core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
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vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ $(net-y) $(net-m) $(libs-y) $(libs-m))) vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(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) # Build vmlinux # --------------------------------------------------------------------------- |
070b98bfd kbuild: trivial f... |
536 |
# vmlinux is built from the objects selected by $(vmlinux-init) and |
1da177e4c Linux-2.6.12-rc2 |
537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 |
# $(vmlinux-main). Most are built-in.o files from top-level directories # in the kernel tree, others are specified in arch/$(ARCH)Makefile. # Ordering when linking is important, and $(vmlinux-init) must be first. # # vmlinux # ^ # | # +-< $(vmlinux-init) # | +--< init/version.o + more # | # +--< $(vmlinux-main) # | +--< driver/built-in.o mm/built-in.o + more # | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) # # vmlinux version (uname -v) cannot be updated during normal # descending-into-subdirs phase since we do not yet know if we need to # update vmlinux. # Therefore this step is delayed until just before final link of vmlinux - # except in the kallsyms case where it is done just before adding the # symbols to the kernel. # # System.map is generated to document addresses of all kernel symbols vmlinux-init := $(head-y) $(init-y) vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) vmlinux-all := $(vmlinux-init) $(vmlinux-main) vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds # Rule to link vmlinux - also used during CONFIG_KALLSYMS # May be overridden by arch/$(ARCH)/Makefile quiet_cmd_vmlinux__ ?= LD $@ cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ -T $(vmlinux-lds) $(vmlinux-init) \ --start-group $(vmlinux-main) --end-group \ $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^) # Generate new vmlinux version quiet_cmd_vmlinux_version = GEN .version cmd_vmlinux_version = set -e; \ |
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577 578 579 580 581 582 583 |
if [ ! -r .version ]; then \ rm -f .version; \ echo 1 >.version; \ else \ mv .version .old_version; \ expr 0$$(cat .old_version) + 1 >.version; \ fi; \ |
1da177e4c Linux-2.6.12-rc2 |
584 585 586 |
$(MAKE) $(build)=init # Generate System.map |
070b98bfd kbuild: trivial f... |
587 |
quiet_cmd_sysmap = SYSMAP |
1da177e4c Linux-2.6.12-rc2 |
588 589 590 591 592 |
cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap # Link of vmlinux # If CONFIG_KALLSYMS is set .version is already updated # Generate System.map and verify that the content is consistent |
39ca371c4 [PATCH] kbuild: E... |
593 594 |
# Use + in front of the vmlinux_version rule to silent warning with make -j2 # First command is ':' to allow us to use + in front of the rule |
1da177e4c Linux-2.6.12-rc2 |
595 |
define rule_vmlinux__ |
39ca371c4 [PATCH] kbuild: E... |
596 |
: |
1da177e4c Linux-2.6.12-rc2 |
597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 |
$(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) $(call cmd,vmlinux__) $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd $(Q)$(if $($(quiet)cmd_sysmap), \ echo ' $($(quiet)cmd_sysmap) System.map' &&) \ $(cmd_sysmap) $@ System.map; \ if [ $$? -ne 0 ]; then \ rm -f $@; \ /bin/false; \ fi; $(verify_kallsyms) endef ifdef CONFIG_KALLSYMS # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) # It's a three stage process: # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is # empty # Running kallsyms on that gives us .tmp_kallsyms1.o with # the right size - vmlinux version (uname -v) is updated during this step # o .tmp_vmlinux2 now has a __kallsyms section of the right size, # but due to the added section, some addresses have shifted. # From here, we generate a correct .tmp_kallsyms2.o # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. # o Verify that the System.map from vmlinux matches the map from # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a # temporary bypass to allow the kernel to be built while the # maintainers work out what went wrong with kallsyms. ifdef CONFIG_KALLSYMS_EXTRA_PASS last_kallsyms := 3 else last_kallsyms := 2 endif kallsyms.o := .tmp_kallsyms$(last_kallsyms).o define verify_kallsyms $(Q)$(if $($(quiet)cmd_sysmap), \ echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map $(Q)cmp -s System.map .tmp_System.map || \ (echo Inconsistent kallsyms data; \ echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ rm .tmp_kallsyms* ; /bin/false ) endef # Update vmlinux version before link # Use + in front of this rule to silent warning about make -j1 |
72ba47c1b kbuild: silence m... |
651 |
# First command is ':' to allow us to use + in front of this rule |
1da177e4c Linux-2.6.12-rc2 |
652 653 |
cmd_ksym_ld = $(cmd_vmlinux__) define rule_ksym_ld |
72ba47c1b kbuild: silence m... |
654 |
: |
1da177e4c Linux-2.6.12-rc2 |
655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 |
+$(call cmd,vmlinux_version) $(call cmd,vmlinux__) $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd endef # Generate .S file with all kernel symbols quiet_cmd_kallsyms = KSYM $@ cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE $(call if_changed_dep,as_o_S) .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) $(call cmd,kallsyms) # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE $(call if_changed_rule,ksym_ld) .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE $(call if_changed,vmlinux__) .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE $(call if_changed,vmlinux__) # Needs to visit scripts/ before $(KALLSYMS) can be used. $(KALLSYMS): scripts ; |
33bc25eae kbuild: Add targe... |
683 684 685 686 687 688 689 690 691 |
# Generate some data for debugging strange kallsyms problems debug_kallsyms: .tmp_map$(last_kallsyms) .tmp_map%: .tmp_vmlinux% FORCE ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ .tmp_map3: .tmp_map2 .tmp_map2: .tmp_map1 |
1da177e4c Linux-2.6.12-rc2 |
692 693 694 695 696 |
endif # ifdef CONFIG_KALLSYMS # vmlinux image - including updated kernel symbols vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE $(call if_changed_rule,vmlinux__) |
4e25d8bb9 [PATCH] kbuild: a... |
697 |
$(Q)rm -f .old_version |
1da177e4c Linux-2.6.12-rc2 |
698 699 700 701 702 703 704 705 706 707 |
# The actual objects are generated when descending, # make sure no implicit rule kicks in $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; # Handle descending into subdirectories listed in $(vmlinux-dirs) # Preset locale variables to speed up the build process. Limit locale # tweaks to this spot to avoid wrong language settings when running # make menuconfig etc. # Error messages still appears in the original language |
4f1933620 kbuild: change kb... |
708 |
PHONY += $(vmlinux-dirs) |
5bb782690 kbuild: rename pr... |
709 |
$(vmlinux-dirs): prepare scripts |
1da177e4c Linux-2.6.12-rc2 |
710 |
$(Q)$(MAKE) $(build)=$@ |
cb58455c4 kbuild: KERNELREL... |
711 |
# Build the kernel release string |
f1d28fb04 kconfig: move .ke... |
712 |
# The KERNELRELEASE is stored in a file named include/config/kernel.release |
cb58455c4 kbuild: KERNELREL... |
713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 |
# to be used when executing for example make install or make modules_install # # Take the contents of any files called localversion* and the config # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. # LOCALVERSION from the command line override all of this nullstring := space := $(nullstring) # end of line ___localver = $(objtree)/localversion* $(srctree)/localversion* __localver = $(sort $(wildcard $(___localver))) # skip backup files (containing '~') _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f))) localver = $(subst $(space),, \ $(shell cat /dev/null $(_localver)) \ $(patsubst "%",%,$(CONFIG_LOCALVERSION))) |
070b98bfd kbuild: trivial f... |
730 |
|
cb58455c4 kbuild: KERNELREL... |
731 732 |
# If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called # and if the SCM is know a tag from the SCM is appended. |
070b98bfd kbuild: trivial f... |
733 |
# The appended tag is determined by the SCM used. |
cb58455c4 kbuild: KERNELREL... |
734 735 736 737 738 739 740 741 742 743 744 |
# # Currently, only git is supported. # Other SCMs can edit scripts/setlocalversion and add the appropriate # checks as needed. ifdef CONFIG_LOCALVERSION_AUTO _localver-auto = $(shell $(CONFIG_SHELL) \ $(srctree)/scripts/setlocalversion $(srctree)) localver-auto = $(LOCALVERSION)$(_localver-auto) endif localver-full = $(localver)$(localver-auto) |
f1d28fb04 kconfig: move .ke... |
745 |
# Store (new) KERNELRELASE string in include/config/kernel.release |
2244cbd8a kbuild: create .k... |
746 |
kernelrelease = $(KERNELVERSION)$(localver-full) |
f1d28fb04 kconfig: move .ke... |
747 |
include/config/kernel.release: include/config/auto.conf FORCE |
2244cbd8a kbuild: create .k... |
748 749 |
$(Q)rm -f $@ $(Q)echo $(kernelrelease) > $@ |
cb58455c4 kbuild: KERNELREL... |
750 |
|
1da177e4c Linux-2.6.12-rc2 |
751 |
# Things we need to do before we recursively start building the kernel |
5bb782690 kbuild: rename pr... |
752 753 754 755 |
# or the modules are listed in "prepare". # A multi level approach is used. prepareN is processed before prepareN-1. # archprepare is used in arch Makefiles and when processed asm symlink, # version.h and scripts_basic is processed / created. |
1da177e4c Linux-2.6.12-rc2 |
756 |
|
5bb782690 kbuild: rename pr... |
757 |
# Listed in dependency order |
4f1933620 kbuild: change kb... |
758 |
PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb782690 kbuild: rename pr... |
759 760 |
# prepare-all is deprecated, use prepare as valid replacement |
4f1933620 kbuild: change kb... |
761 |
PHONY += prepare-all |
1da177e4c Linux-2.6.12-rc2 |
762 |
|
86feeaa81 kbuild: full depe... |
763 |
# prepare3 is used to check if we are building in a separate output directory, |
1da177e4c Linux-2.6.12-rc2 |
764 765 766 |
# and if so do: # 1) Check that make has not been executed in the kernel src $(srctree) # 2) Create the include2 directory, used for the second asm symlink |
f1d28fb04 kconfig: move .ke... |
767 |
prepare3: include/config/kernel.release |
1da177e4c Linux-2.6.12-rc2 |
768 769 |
ifneq ($(KBUILD_SRC),) @echo ' Using $(srctree) as source for kernel' |
c955ccafc kconfig: fix .con... |
770 |
$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
1da177e4c Linux-2.6.12-rc2 |
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echo " $(srctree) is not clean, please run 'make mrproper'";\ echo " in the '$(srctree)' directory.";\ /bin/false; \ fi; $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm endif |
86feeaa81 kbuild: full depe... |
778 779 |
# prepare2 creates a makefile if using a separate output directory prepare2: prepare3 outputmakefile |
1da177e4c Linux-2.6.12-rc2 |
780 |
|
63104eec2 kbuild: introduce... |
781 782 |
prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \ include/asm include/config/auto.conf |
1da177e4c Linux-2.6.12-rc2 |
783 |
ifneq ($(KBUILD_MODULES),) |
1da177e4c Linux-2.6.12-rc2 |
784 |
$(Q)mkdir -p $(MODVERDIR) |
fca1dff21 kbuild: removing ... |
785 |
$(Q)rm -f $(MODVERDIR)/* |
1da177e4c Linux-2.6.12-rc2 |
786 |
endif |
5bb782690 kbuild: rename pr... |
787 788 789 |
archprepare: prepare1 scripts_basic prepare0: archprepare FORCE |
8d36a6236 kbuild: fix gener... |
790 |
$(Q)$(MAKE) $(build)=. |
86feeaa81 kbuild: full depe... |
791 |
|
1da177e4c Linux-2.6.12-rc2 |
792 |
# All the preparing.. |
5bb782690 kbuild: rename pr... |
793 |
prepare prepare-all: prepare0 |
1da177e4c Linux-2.6.12-rc2 |
794 |
|
070b98bfd kbuild: trivial f... |
795 796 |
# Leave this as default for preprocessing vmlinux.lds.S, which is now # done in arch/$(ARCH)/kernel/Makefile |
1da177e4c Linux-2.6.12-rc2 |
797 798 |
export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) |
070b98bfd kbuild: trivial f... |
799 800 801 |
# 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. |
1da177e4c Linux-2.6.12-rc2 |
802 803 804 805 806 |
include/asm: @echo ' SYMLINK $@ -> include/asm-$(ARCH)' $(Q)if [ ! -d include ]; then mkdir -p include; fi; @ln -fsn asm-$(ARCH) $@ |
1da177e4c Linux-2.6.12-rc2 |
807 808 809 810 811 812 813 |
# Generate some files # --------------------------------------------------------------------------- # KERNELRELEASE can change from a few different places, meaning version.h # needs to be updated, so this check is forced on all builds uts_len := 64 |
63104eec2 kbuild: introduce... |
814 815 816 817 818 819 820 |
define filechk_utsrelease.h if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ exit 1; \ fi; \ (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) endef |
1da177e4c Linux-2.6.12-rc2 |
821 822 |
define filechk_version.h |
63104eec2 kbuild: introduce... |
823 824 825 |
(echo \#define LINUX_VERSION_CODE $(shell \ expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
1da177e4c Linux-2.6.12-rc2 |
826 |
endef |
63104eec2 kbuild: introduce... |
827 |
include/linux/version.h: $(srctree)/Makefile FORCE |
1da177e4c Linux-2.6.12-rc2 |
828 |
$(call filechk,version.h) |
63104eec2 kbuild: introduce... |
829 830 |
include/linux/utsrelease.h: include/config/kernel.release FORCE $(call filechk,utsrelease.h) |
1da177e4c Linux-2.6.12-rc2 |
831 |
# --------------------------------------------------------------------------- |
4f1933620 kbuild: change kb... |
832 |
PHONY += depend dep |
1da177e4c Linux-2.6.12-rc2 |
833 834 835 836 |
depend dep: @echo '*** Warning: make $@ is unnecessary now.' # --------------------------------------------------------------------------- |
8d730cfb5 Basic implementat... |
837 838 839 840 841 842 843 844 845 |
# Kernel headers INSTALL_HDR_PATH=$(MODLIB)/abi export INSTALL_HDR_PATH PHONY += headers_install headers_install: include/linux/version.h $(Q)unifdef -Ux /dev/null $(Q)rm -rf $(INSTALL_HDR_PATH)/include $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include |
684753599 Basic implementat... |
846 847 848 |
PHONY += headers_check headers_check: headers_install $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1 |
8d730cfb5 Basic implementat... |
849 |
# --------------------------------------------------------------------------- |
1da177e4c Linux-2.6.12-rc2 |
850 851 852 |
# Modules ifdef CONFIG_MODULES |
070b98bfd kbuild: trivial f... |
853 |
# By default, build modules as well |
1da177e4c Linux-2.6.12-rc2 |
854 855 856 857 |
all: modules # Build modules |
4f1933620 kbuild: change kb... |
858 |
PHONY += modules |
1da177e4c Linux-2.6.12-rc2 |
859 860 861 862 863 864 |
modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) @echo ' Building modules, stage 2.'; $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost # Target to prepare building external modules |
4f1933620 kbuild: change kb... |
865 |
PHONY += modules_prepare |
5bb782690 kbuild: rename pr... |
866 |
modules_prepare: prepare scripts |
1da177e4c Linux-2.6.12-rc2 |
867 868 |
# Target to install modules |
4f1933620 kbuild: change kb... |
869 |
PHONY += modules_install |
1da177e4c Linux-2.6.12-rc2 |
870 |
modules_install: _modinst_ _modinst_post |
4f1933620 kbuild: change kb... |
871 |
PHONY += _modinst_ |
1da177e4c Linux-2.6.12-rc2 |
872 |
_modinst_: |
ce454d4d7 [PATCH] kbuild: W... |
873 |
@if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ |
1da177e4c Linux-2.6.12-rc2 |
874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 |
echo "Warning: you may need to install module-init-tools"; \ echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ sleep 1; \ fi @rm -rf $(MODLIB)/kernel @rm -f $(MODLIB)/source @mkdir -p $(MODLIB)/kernel @ln -s $(srctree) $(MODLIB)/source @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ rm -f $(MODLIB)/build ; \ ln -s $(objtree) $(MODLIB)/build ; \ fi $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst # If System.map exists, run depmod. This deliberately does not have a # dependency on System.map since that would run the dependency tree on # vmlinux. This depmod is only for convenience to give the initial # boot a modules.dep even before / is mounted read-write. However the # boot script depmod is the master version. ifeq "$(strip $(INSTALL_MOD_PATH))" "" depmod_opts := else depmod_opts := -b $(INSTALL_MOD_PATH) -r endif |
4f1933620 kbuild: change kb... |
898 |
PHONY += _modinst_post |
1da177e4c Linux-2.6.12-rc2 |
899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 |
_modinst_post: _modinst_ if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi else # CONFIG_MODULES # Modules not configured # --------------------------------------------------------------------------- modules modules_install: FORCE @echo @echo "The present 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 |
1da177e4c Linux-2.6.12-rc2 |
916 917 918 919 920 921 922 923 924 925 926 927 928 929 |
### # Cleaning is done on three levels. # make clean Delete most generated files # Leave enough to build external modules # make mrproper Delete the current configuration, and all generated files # make distclean Remove editor backup files, patch leftover files and the like # Directories & files removed with 'make clean' CLEAN_DIRS += $(MODVERDIR) CLEAN_FILES += vmlinux System.map \ .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map # Directories & files removed with 'make mrproper' MRPROPER_DIRS += include/config include2 |
50aa88e28 kbuild: ensure mr... |
930 |
MRPROPER_FILES += .config .config.old include/asm .version .old_version \ |
63104eec2 kbuild: introduce... |
931 932 |
include/linux/autoconf.h include/linux/version.h \ include/linux/utsrelease.h \ |
f1d28fb04 kconfig: move .ke... |
933 |
Module.symvers tags TAGS cscope* |
1da177e4c Linux-2.6.12-rc2 |
934 935 936 937 938 |
# clean - Delete most, but leave enough to build external modules # clean: rm-dirs := $(CLEAN_DIRS) clean: rm-files := $(CLEAN_FILES) |
86feeaa81 kbuild: full depe... |
939 |
clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs)) |
1da177e4c Linux-2.6.12-rc2 |
940 |
|
4f1933620 kbuild: change kb... |
941 |
PHONY += $(clean-dirs) clean archclean |
1da177e4c Linux-2.6.12-rc2 |
942 943 944 945 946 947 948 |
$(clean-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) clean: archclean $(clean-dirs) $(call cmd,rmdirs) $(call cmd,rmfiles) @find . $(RCS_FIND_IGNORE) \ |
070b98bfd kbuild: trivial f... |
949 |
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
15fde6751 kbuild: support f... |
950 951 |
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ -o -name '*.symtypes' \) \ |
1da177e4c Linux-2.6.12-rc2 |
952 953 954 955 956 957 958 |
-type f -print | xargs rm -f # mrproper - Delete all generated files, including .config # mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) |
4f1933620 kbuild: change kb... |
959 |
PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4c Linux-2.6.12-rc2 |
960 961 962 963 964 965 966 967 968 |
$(mrproper-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) mrproper: clean archmrproper $(mrproper-dirs) $(call cmd,rmdirs) $(call cmd,rmfiles) # distclean # |
4f1933620 kbuild: change kb... |
969 |
PHONY += distclean |
1da177e4c Linux-2.6.12-rc2 |
970 971 972 |
distclean: mrproper @find $(srctree) $(RCS_FIND_IGNORE) \ |
070b98bfd kbuild: trivial f... |
973 |
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1da177e4c Linux-2.6.12-rc2 |
974 |
-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
070b98bfd kbuild: trivial f... |
975 |
-o -name '.*.rej' -o -size 0 \ |
1da177e4c Linux-2.6.12-rc2 |
976 977 978 979 980 981 982 983 |
-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ -type f -print | xargs rm -f # Packaging of the kernel to various formats # --------------------------------------------------------------------------- # rpm target kept for backward compatibility package-dir := $(srctree)/scripts/package |
031ecc6de kbuild: add depen... |
984 |
%pkg: include/config/kernel.release FORCE |
6c2133e11 kbuild: fix make ... |
985 |
$(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6de kbuild: add depen... |
986 |
rpm: include/config/kernel.release FORCE |
6c2133e11 kbuild: fix make ... |
987 |
$(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4c Linux-2.6.12-rc2 |
988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 |
# Brief documentation of the typical targets used # --------------------------------------------------------------------------- boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) boards := $(notdir $(boards)) help: @echo 'Cleaning targets:' @echo ' clean - remove most generated files but keep the config' @echo ' mrproper - remove all generated files + config + various backup files' @echo '' @echo 'Configuration targets:' @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help @echo '' @echo 'Other generic targets:' @echo ' all - Build all targets marked with [*]' @echo '* vmlinux - Build the bare kernel' @echo '* modules - Build all modules' |
9cc5d74c8 kbuild: document ... |
1008 |
@echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
1da177e4c Linux-2.6.12-rc2 |
1009 1010 |
@echo ' dir/ - Build all files in dir and below' @echo ' dir/file.[ois] - Build specified target only' |
155ad605b [PATCH] kbuild: b... |
1011 |
@echo ' dir/file.ko - Build module including final link' |
1da177e4c Linux-2.6.12-rc2 |
1012 1013 1014 |
@echo ' rpm - Build a kernel as an RPM package' @echo ' tags/TAGS - Generate tags file for editors' @echo ' cscope - Generate cscope index' |
6d1288425 [PATCH] kbuild: a... |
1015 |
@echo ' kernelrelease - Output the release version string' |
cb58455c4 kbuild: KERNELREL... |
1016 |
@echo ' kernelversion - Output the version stored in Makefile' |
8d730cfb5 Basic implementat... |
1017 1018 |
@echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH' @echo ' (default: /lib/modules/$$VERSION/abi)' |
1da177e4c Linux-2.6.12-rc2 |
1019 1020 |
@echo '' @echo 'Static analysers' |
1da177e4c Linux-2.6.12-rc2 |
1021 1022 1023 1024 |
@echo ' checkstack - Generate a list of stack hogs' @echo ' namespacecheck - Name space analysis on compiled kernel' @echo '' @echo 'Kernel packaging:' |
6c2133e11 kbuild: fix make ... |
1025 |
@$(MAKE) $(build)=$(package-dir) help |
1da177e4c Linux-2.6.12-rc2 |
1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 |
@echo '' @echo 'Documentation targets:' @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp @echo '' @echo 'Architecture specific targets ($(ARCH)):' @$(if $(archhelp),$(archhelp),\ echo ' No architecture specific help defined for $(ARCH)') @echo '' @$(if $(boards), \ $(foreach b, $(boards), \ printf " %-24s - Build for %s\ " $(b) $(subst _defconfig,,$(b));) \ echo '') @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
701842e3b kbuild: documenta... |
1042 1043 |
@echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' @echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
1da177e4c Linux-2.6.12-rc2 |
1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 |
@echo '' @echo 'Execute "make" or "make all" to build all targets marked with [*] ' @echo 'For further info see the ./README file' # Documentation targets # --------------------------------------------------------------------------- %docs: scripts_basic FORCE $(Q)$(MAKE) $(build)=Documentation/DocBook $@ else # KBUILD_EXTMOD ### # External module support. # When building external modules the kernel used as basis is considered # read-only, and no consistency checks are made and the make # system is not used on the basis kernel. If updates are required # in the basis kernel ordinary make commands (without M=...) must # be used. # # The following are the only valid targets when building external # modules. # make M=dir clean Delete all automatically generated files # make M=dir modules Make all modules in specified dir # make M=dir Same as 'make M=dir modules' # make M=dir modules_install |
070b98bfd kbuild: trivial f... |
1070 |
# Install the modules built in the module directory |
1da177e4c Linux-2.6.12-rc2 |
1071 1072 1073 1074 |
# Assumes install directory is already created # We are always building modules KBUILD_MODULES := 1 |
4f1933620 kbuild: change kb... |
1075 |
PHONY += crmodverdir |
1da177e4c Linux-2.6.12-rc2 |
1076 1077 |
crmodverdir: $(Q)mkdir -p $(MODVERDIR) |
fca1dff21 kbuild: removing ... |
1078 |
$(Q)rm -f $(MODVERDIR)/* |
1da177e4c Linux-2.6.12-rc2 |
1079 |
|
4f1933620 kbuild: change kb... |
1080 |
PHONY += $(objtree)/Module.symvers |
1da177e4c Linux-2.6.12-rc2 |
1081 1082 1083 1084 1085 1086 1087 1088 |
$(objtree)/Module.symvers: @test -e $(objtree)/Module.symvers || ( \ echo; \ echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ echo " is missing; modules will have no dependencies and modversions."; \ echo ) module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
4f1933620 kbuild: change kb... |
1089 |
PHONY += $(module-dirs) modules |
1da177e4c Linux-2.6.12-rc2 |
1090 1091 1092 1093 1094 1095 |
$(module-dirs): crmodverdir $(objtree)/Module.symvers $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) modules: $(module-dirs) @echo ' Building modules, stage 2.'; $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost |
4f1933620 kbuild: change kb... |
1096 |
PHONY += modules_install |
a67dc21a3 kbuild: run depmo... |
1097 |
modules_install: _emodinst_ _emodinst_post |
e63046630 kbuild: remove a ... |
1098 |
|
4f1933620 kbuild: change kb... |
1099 1100 |
install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) PHONY += _emodinst_ |
a67dc21a3 kbuild: run depmo... |
1101 |
_emodinst_: |
a67dc21a3 kbuild: run depmo... |
1102 |
$(Q)mkdir -p $(MODLIB)/$(install-dir) |
1da177e4c Linux-2.6.12-rc2 |
1103 |
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst |
a67dc21a3 kbuild: run depmo... |
1104 1105 1106 1107 1108 1109 1110 1111 |
# 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 |
4f1933620 kbuild: change kb... |
1112 |
PHONY += _emodinst_post |
a67dc21a3 kbuild: run depmo... |
1113 1114 |
_emodinst_post: _emodinst_ $(call cmd,depmod) |
1da177e4c Linux-2.6.12-rc2 |
1115 |
clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
4f1933620 kbuild: change kb... |
1116 |
PHONY += $(clean-dirs) clean |
1da177e4c Linux-2.6.12-rc2 |
1117 1118 1119 1120 1121 1122 1123 |
$(clean-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) clean: rm-dirs := $(MODVERDIR) clean: $(clean-dirs) $(call cmd,rmdirs) @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ |
070b98bfd kbuild: trivial f... |
1124 |
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
1da177e4c Linux-2.6.12-rc2 |
1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 |
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ -type f -print | xargs rm -f help: @echo ' Building external modules.' @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' @echo '' @echo ' modules - default target, build the module(s)' @echo ' modules_install - install the module' @echo ' clean - remove generated files in module directory only' @echo '' |
06300b21f kbuild: support b... |
1136 1137 |
# Dummies... |
4f1933620 kbuild: change kb... |
1138 |
PHONY += prepare scripts |
06300b21f kbuild: support b... |
1139 1140 |
prepare: ; scripts: ; |
1da177e4c Linux-2.6.12-rc2 |
1141 1142 1143 1144 1145 1146 1147 1148 |
endif # KBUILD_EXTMOD # Generate tags for editors # --------------------------------------------------------------------------- #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file. #Adding $(srctree) adds about 20M on i386 to the size of the output file! |
f182ae626 [PATCH] kbuild: b... |
1149 |
ifeq ($(src),$(obj)) |
1da177e4c Linux-2.6.12-rc2 |
1150 1151 1152 1153 |
__srctree = else __srctree = $(srctree)/ endif |
2ab23c95a [PATCH] Kbuild: i... |
1154 1155 1156 1157 1158 1159 1160 |
ifeq ($(ALLSOURCE_ARCHS),) ifeq ($(ARCH),um) ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH) else ALLINCLUDE_ARCHS := $(ARCH) endif else |
070b98bfd kbuild: trivial f... |
1161 |
#Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour. |
2ab23c95a [PATCH] Kbuild: i... |
1162 1163 |
ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS) endif |
a0674e88d [PATCH] kbuild: a... |
1164 |
ALLSOURCE_ARCHS := $(ARCH) |
e838db685 kbuild: adding sy... |
1165 1166 |
define find-sources ( find $(__srctree) $(RCS_FIND_IGNORE) \ |
1da177e4c Linux-2.6.12-rc2 |
1167 |
\( -name include -o -name arch \) -prune -o \ |
e838db685 kbuild: adding sy... |
1168 |
-name $1 -print; \ |
a0674e88d [PATCH] kbuild: a... |
1169 1170 |
for ARCH in $(ALLSOURCE_ARCHS) ; do \ find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \ |
e838db685 kbuild: adding sy... |
1171 |
-name $1 -print; \ |
a0674e88d [PATCH] kbuild: a... |
1172 |
done ; \ |
1da177e4c Linux-2.6.12-rc2 |
1173 |
find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \ |
e838db685 kbuild: adding sy... |
1174 |
-name $1 -print; \ |
1da177e4c Linux-2.6.12-rc2 |
1175 1176 |
find $(__srctree)include $(RCS_FIND_IGNORE) \ \( -name config -o -name 'asm-*' \) -prune \ |
e838db685 kbuild: adding sy... |
1177 |
-o -name $1 -print; \ |
2ab23c95a [PATCH] Kbuild: i... |
1178 |
for ARCH in $(ALLINCLUDE_ARCHS) ; do \ |
a0674e88d [PATCH] kbuild: a... |
1179 |
find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \ |
e838db685 kbuild: adding sy... |
1180 |
-name $1 -print; \ |
a0674e88d [PATCH] kbuild: a... |
1181 |
done ; \ |
1da177e4c Linux-2.6.12-rc2 |
1182 |
find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ |
e838db685 kbuild: adding sy... |
1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 |
-name $1 -print ) endef define all-sources $(call find-sources,'*.[chS]') endef define all-kconfigs $(call find-sources,'Kconfig*') endef define all-defconfigs $(call find-sources,'defconfig') |
1da177e4c Linux-2.6.12-rc2 |
1194 1195 1196 |
endef quiet_cmd_cscope-file = FILELST cscope.files |
acbef459a [PATCH] kbuild: m... |
1197 |
cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files |
1da177e4c Linux-2.6.12-rc2 |
1198 1199 |
quiet_cmd_cscope = MAKE cscope.out |
acbef459a [PATCH] kbuild: m... |
1200 |
cmd_cscope = cscope -b |
1da177e4c Linux-2.6.12-rc2 |
1201 1202 1203 1204 1205 1206 |
cscope: FORCE $(call cmd,cscope-file) $(call cmd,cscope) quiet_cmd_TAGS = MAKE $@ |
66d609ec8 kbuild: fix make ... |
1207 1208 |
define cmd_TAGS rm -f $@; \ |
54e08a239 kbuild: tags file... |
1209 1210 1211 1212 |
ETAGSF=`etags --version | grep -i exuberant >/dev/null && \ echo "-I __initdata,__exitdata,__acquires,__releases \ -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ --extra=+f --c-kinds=+px"`; \ |
e838db685 kbuild: adding sy... |
1213 1214 1215 1216 1217 1218 1219 |
$(all-sources) | xargs etags $$ETAGSF -a; \ if test "x$$ETAGSF" = x; then \ $(all-kconfigs) | xargs etags -a \ --regex='/^config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \ $(all-defconfigs) | xargs etags -a \ --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \ fi |
66d609ec8 kbuild: fix make ... |
1220 1221 1222 1223 |
endef TAGS: FORCE $(call cmd,TAGS) |
1da177e4c Linux-2.6.12-rc2 |
1224 |
|
1da177e4c Linux-2.6.12-rc2 |
1225 1226 1227 1228 |
quiet_cmd_tags = MAKE $@ define cmd_tags rm -f $@; \ |
54e08a239 kbuild: tags file... |
1229 1230 1231 1232 |
CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \ echo "-I __initdata,__exitdata,__acquires,__releases \ -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ --extra=+f --c-kinds=+px"`; \ |
f6333eb4e kbuild: Add ctags... |
1233 |
$(all-sources) | xargs ctags $$CTAGSF -a |
1da177e4c Linux-2.6.12-rc2 |
1234 |
endef |
1da177e4c Linux-2.6.12-rc2 |
1235 1236 1237 1238 1239 1240 |
tags: FORCE $(call cmd,tags) # Scripts to check various things for consistency # --------------------------------------------------------------------------- |
1da177e4c Linux-2.6.12-rc2 |
1241 1242 1243 1244 1245 1246 1247 1248 1249 |
includecheck: find * $(RCS_FIND_IGNORE) \ -name '*.[hcS]' -type f -print | sort \ | xargs $(PERL) -w scripts/checkincludes.pl versioncheck: find * $(RCS_FIND_IGNORE) \ -name '*.[hcS]' -type f -print | sort \ | xargs $(PERL) -w scripts/checkversion.pl |
1da177e4c Linux-2.6.12-rc2 |
1250 1251 1252 1253 1254 |
namespacecheck: $(PERL) $(srctree)/scripts/namespace.pl endif #ifeq ($(config-targets),1) endif #ifeq ($(mixed-targets),1) |
c30a02e02 kbuild: `make ker... |
1255 |
PHONY += checkstack kernelrelease kernelversion |
1da177e4c Linux-2.6.12-rc2 |
1256 1257 1258 1259 1260 |
checkstack: $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ $(PERL) $(src)/scripts/checkstack.pl $(ARCH) kernelrelease: |
f1d28fb04 kconfig: move .ke... |
1261 1262 |
$(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ $(error kernelrelease not valid - run 'make prepare' to update it)) |
cb58455c4 kbuild: KERNELREL... |
1263 |
kernelversion: |
2244cbd8a kbuild: create .k... |
1264 |
@echo $(KERNELVERSION) |
1da177e4c Linux-2.6.12-rc2 |
1265 |
|
06300b21f kbuild: support b... |
1266 1267 |
# Single targets # --------------------------------------------------------------------------- |
bc2546a67 kbuild: fix build... |
1268 1269 1270 1271 1272 1273 1274 1275 1276 |
# Single targets are compatible with: # - build whith mixed source and output # - build with separate output dir 'make O=...' # - external modules # # target-dir => where to store outputfile # build-dir => directory in kernel source tree to use ifeq ($(KBUILD_EXTMOD),) |
aa360879e kbuild: fix make ... |
1277 |
build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a67 kbuild: fix build... |
1278 1279 1280 1281 1282 1283 |
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 |
f6ecebd65 kbuild: fix make ... |
1284 |
%.s: %.c prepare scripts FORCE |
bc2546a67 kbuild: fix build... |
1285 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65 kbuild: fix make ... |
1286 |
%.i: %.c prepare scripts FORCE |
bc2546a67 kbuild: fix build... |
1287 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65 kbuild: fix make ... |
1288 |
%.o: %.c prepare scripts FORCE |
bc2546a67 kbuild: fix build... |
1289 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65 kbuild: fix make ... |
1290 |
%.lst: %.c prepare scripts FORCE |
bc2546a67 kbuild: fix build... |
1291 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65 kbuild: fix make ... |
1292 |
%.s: %.S prepare scripts FORCE |
bc2546a67 kbuild: fix build... |
1293 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65 kbuild: fix make ... |
1294 |
%.o: %.S prepare scripts FORCE |
bc2546a67 kbuild: fix build... |
1295 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde6751 kbuild: support f... |
1296 1297 |
%.symtypes: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
06300b21f kbuild: support b... |
1298 |
|
bc2546a67 kbuild: fix build... |
1299 1300 |
# Modules / %/: prepare scripts FORCE |
06300b21f kbuild: support b... |
1301 |
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a67 kbuild: fix build... |
1302 1303 |
$(build)=$(build-dir) %.ko: prepare scripts FORCE |
06300b21f kbuild: support b... |
1304 |
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a67 kbuild: fix build... |
1305 |
$(build)=$(build-dir) $(@:.ko=.o) |
06300b21f kbuild: support b... |
1306 |
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost |
1da177e4c Linux-2.6.12-rc2 |
1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 |
# FIXME Should go into a make.lib or something # =========================================================================== quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) cmd_rmdirs = rm -rf $(rm-dirs) quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) cmd_rmfiles = rm -f $(rm-files) a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \ $(NOSTDINC_FLAGS) $(CPPFLAGS) \ |
5e8d780d7 kbuild: fix ia64 ... |
1319 |
$(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) |
1da177e4c Linux-2.6.12-rc2 |
1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 |
quiet_cmd_as_o_S = AS $@ cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< # read all saved command lines targets := $(wildcard $(sort $(targets))) cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) ifneq ($(cmd_files),) $(cmd_files): ; # Do not try to update included dependency files include $(cmd_files) endif |
1da177e4c Linux-2.6.12-rc2 |
1333 1334 1335 1336 |
# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir # Usage: # $(Q)$(MAKE) $(clean)=dir clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj |
1da177e4c Linux-2.6.12-rc2 |
1337 |
endif # skip-makefile |
4f1933620 kbuild: change kb... |
1338 |
PHONY += FORCE |
1da177e4c Linux-2.6.12-rc2 |
1339 |
FORCE: |
4f1933620 kbuild: change kb... |
1340 1341 1342 1343 1344 |
# 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) |