5 NAME=Crazed Snow-Weasel
8 # To see a list of typical targets execute "make help"
9 # More info can be located in ./README
10 # Comments in this file are targeted only to the developer, do not
11 # expect to learn how to build the kernel reading this file.
13 # Do not print "Entering directory ..."
14 MAKEFLAGS += --no-print-directory
16 # We are using a recursive build, so we need to do a little thinking
17 # to get the ordering right.
19 # Most importantly: sub-Makefiles should only ever modify files in
20 # their own directory. If in some directory we have a dependency on
21 # a file in another dir (which doesn't happen often, but it's often
22 # unavoidable when linking the built-in.o targets which finally
23 # turn into vmlinux), we will call a sub make in that other dir, and
24 # after that we are sure that everything which is in that other dir
27 # The only cases where we need to modify files which have global
28 # effects are thus separated out and done before the recursive
29 # descending is started. They are now explicitly listed as the
32 # To put more focus on warnings, be less verbose as default
33 # Use 'make V=1' to see the full commands
36 ifeq ("$(origin V)", "command line")
44 # Call sparse as part of compilation of C files
45 # Use 'make C=1' to enable sparse checking
48 ifeq ("$(origin C)", "command line")
49 KBUILD_CHECKSRC = $(C)
52 ifndef KBUILD_CHECKSRC
56 # Use make M=dir to specify directory of external module to build
57 # Old syntax make ... SUBDIRS=$PWD is still supported
58 # Setting the environment variable KBUILD_EXTMOD take precedence
60 KBUILD_EXTMOD ?= $(SUBDIRS)
63 ifeq ("$(origin M)", "command line")
69 # kbuild supports saving output files in a separate directory.
70 # To locate output files in a separate directory two syntaxes are supported.
71 # In both cases the working directory must be the root of the kernel src.
73 # Use "make O=dir/to/store/output/files/"
75 # 2) Set KBUILD_OUTPUT
76 # Set the environment variable KBUILD_OUTPUT to point to the directory
77 # where the output files shall be placed.
78 # export KBUILD_OUTPUT=dir/to/store/output/files/
81 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
85 # KBUILD_SRC is set on invocation of make in OBJ directory
86 # KBUILD_SRC is not intended to be used by the regular user (for now)
89 # OK, Make called in directory where kernel src resides
90 # Do we want to locate output files in a separate directory?
92 ifeq ("$(origin O)", "command line")
97 # That's our default target when none is given on the command line
101 ifneq ($(KBUILD_OUTPUT),)
102 # Invoke a second make in the output directory, passing relevant variables
103 # check that the output directory actually exists
104 saved-output := $(KBUILD_OUTPUT)
105 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
106 $(if $(KBUILD_OUTPUT),, \
107 $(error output directory "$(saved-output)" does not exist))
109 PHONY += $(MAKECMDGOALS)
111 $(filter-out _all,$(MAKECMDGOALS)) _all:
112 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
113 KBUILD_SRC=$(CURDIR) \
114 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
116 # Leave processing to above invocation of make
118 endif # ifneq ($(KBUILD_OUTPUT),)
119 endif # ifeq ($(KBUILD_SRC),)
121 # We process the rest of the Makefile if this is the final invocation of make
122 ifeq ($(skip-makefile),)
124 # If building an external module we do not care about the all: rule
125 # but instead _all depend on modules
127 ifeq ($(KBUILD_EXTMOD),)
133 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
135 # FIXME - TOPDIR is obsolete, use srctree/objtree
140 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
142 export srctree objtree VPATH TOPDIR
145 # SUBARCH tells the usermode build what the underlying arch is. That is set
146 # first, and if a usermode build is happening, the "ARCH=um" on the command
147 # line overrides the setting of ARCH below. If a native build is happening,
148 # then ARCH is assigned, getting whatever value it gets normally, and
149 # SUBARCH is subsequently ignored.
151 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
152 -e s/arm.*/arm/ -e s/sa110/arm/ \
153 -e s/s390x/s390/ -e s/parisc64/parisc/ \
154 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
156 # Cross compiling and selecting different set of gcc/bin-utils
157 # ---------------------------------------------------------------------------
159 # When performing cross compilation for other architectures ARCH shall be set
160 # to the target architecture. (See arch/* for the possibilities).
161 # ARCH can be set during invocation of make:
163 # Another way is to have ARCH set in the environment.
164 # The default ARCH is the host where make is executed.
166 # CROSS_COMPILE specify the prefix used for all executables used
167 # during compilation. Only gcc and related bin-utils executables
168 # are prefixed with $(CROSS_COMPILE).
169 # CROSS_COMPILE can be set on the command line
170 # make CROSS_COMPILE=ia64-linux-
171 # Alternatively CROSS_COMPILE can be set in the environment.
172 # Default value for CROSS_COMPILE is not to prefix executables
173 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
178 # Architecture as present in compile.h
179 UTS_MACHINE := $(ARCH)
181 KCONFIG_CONFIG ?= .config
183 # SHELL used by kbuild
184 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
185 else if [ -x /bin/bash ]; then echo /bin/bash; \
186 else echo sh; fi ; fi)
190 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
193 # Decide whether to build built-in, modular, or both.
194 # Normally, just do built-in.
199 # If we have only "make modules", don't compile built-in objects.
200 # When we're building modules with modversions, we need to consider
201 # the built-in objects during the descend as well, in order to
202 # make sure the checksums are uptodate before we record them.
204 ifeq ($(MAKECMDGOALS),modules)
205 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
208 # If we have "make <whatever> modules", compile modules
209 # in addition to whatever we do anyway.
210 # Just "make" or "make all" shall build modules as well
212 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
216 ifeq ($(MAKECMDGOALS),)
220 export KBUILD_MODULES KBUILD_BUILTIN
221 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
224 # ---------------------------------------------------------------------------
226 # Normally, we echo the whole command before executing it. By making
227 # that echo $($(quiet)$(cmd)), we now have the possibility to set
228 # $(quiet) to choose other forms of output instead, e.g.
230 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
231 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
233 # If $(quiet) is empty, the whole command will be printed.
234 # If it is set to "quiet_", only the short version will be printed.
235 # If it is set to "silent_", nothing wil be printed at all, since
236 # the variable $(silent_cmd_cc_o_c) doesn't exist.
238 # A simple variant is to prefix commands with $(Q) - that's useful
239 # for commands that shall be hidden in non-verbose mode.
243 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
244 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
246 ifeq ($(KBUILD_VERBOSE),1)
254 # If the user is running make -s (silent mode), suppress echoing of
257 ifneq ($(findstring s,$(MAKEFLAGS)),)
261 export quiet Q KBUILD_VERBOSE
264 # Look for make include files relative to root of kernel src
265 MAKEFLAGS += --include-dir=$(srctree)
267 # We need some generic definitions
268 include $(srctree)/scripts/Kbuild.include
270 # Do not use make's built-in rules and variables
271 # This increases performance and avoid hard-to-debug behaviour
274 # Make variables (CC, etc...)
276 AS = $(CROSS_COMPILE)as
277 LD = $(CROSS_COMPILE)ld
278 CC = $(CROSS_COMPILE)gcc
280 AR = $(CROSS_COMPILE)ar
281 NM = $(CROSS_COMPILE)nm
282 STRIP = $(CROSS_COMPILE)strip
283 OBJCOPY = $(CROSS_COMPILE)objcopy
284 OBJDUMP = $(CROSS_COMPILE)objdump
286 GENKSYMS = scripts/genksyms/genksyms
287 DEPMOD = /sbin/depmod
288 KALLSYMS = scripts/kallsyms
292 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
294 CFLAGS_MODULE = $(MODFLAGS)
295 AFLAGS_MODULE = $(MODFLAGS)
301 # Use LINUXINCLUDE when you must reference the include/ directory.
302 # Needed to be compatible with the O= option
303 LINUXINCLUDE := -Iinclude \
304 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
305 -include include/linux/autoconf.h
307 CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
309 CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
310 -fno-strict-aliasing -fno-common
311 AFLAGS := -D__ASSEMBLY__
313 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
314 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
315 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
317 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \
318 ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
319 CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
320 HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
322 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
323 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
324 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
326 # When compiling out-of-tree modules, put MODVERDIR in the module
327 # tree rather than in the kernel tree. The kernel tree might
329 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
331 # Files to ignore in find ... statements
333 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
334 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
336 # ===========================================================================
337 # Rules shared between *config targets and build targets
339 # Basic helpers built in scripts/
340 PHONY += scripts_basic
342 $(Q)$(MAKE) $(build)=scripts/basic
344 # To avoid any implicit rule to kick in, define an empty command.
345 scripts/basic/%: scripts_basic ;
347 PHONY += outputmakefile
348 # outputmakefile generates a Makefile in the output directory, if using a
349 # separate output directory. This allows convenient use of make in the
352 ifneq ($(KBUILD_SRC),)
353 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
354 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
357 # To make sure we do not include .config for any of the *config targets
358 # catch them early, and hand them over to scripts/kconfig/Makefile
359 # It is allowed to specify more targets when calling make, including
360 # mixing *config targets and build targets.
361 # For example 'make oldconfig all'.
362 # Detect when mixed targets is specified, and make a second invocation
363 # of make so .config is not included in this case either (for *config).
365 no-dot-config-targets := clean mrproper distclean \
366 cscope TAGS tags help %docs check% \
367 kernelrelease kernelversion
373 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
374 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
379 ifeq ($(KBUILD_EXTMOD),)
380 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
382 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
388 ifeq ($(mixed-targets),1)
389 # ===========================================================================
390 # We're called with mixed targets (*config and build targets).
391 # Handle them one by one.
394 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
397 ifeq ($(config-targets),1)
398 # ===========================================================================
399 # *config targets only - make sure prerequisites are updated, and descend
400 # in scripts/kconfig to make the *config target
402 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
403 # KBUILD_DEFCONFIG may point out an alternative default configuration
404 # used for 'make defconfig'
405 include $(srctree)/arch/$(ARCH)/Makefile
406 export KBUILD_DEFCONFIG
408 config %config: scripts_basic outputmakefile FORCE
409 $(Q)mkdir -p include/linux include/config
410 $(Q)$(MAKE) $(build)=scripts/kconfig $@
413 # ===========================================================================
414 # Build targets only - this includes vmlinux, arch specific targets, clean
415 # targets and others. In general all targets except *config targets.
417 ifeq ($(KBUILD_EXTMOD),)
418 # Additional helpers built in scripts/
419 # Carefully list dependencies so we do not try to build scripts twice
422 scripts: scripts_basic include/config/auto.conf
423 $(Q)$(MAKE) $(build)=$(@)
425 # Objects we will link into vmlinux / subdirs we need to visit
427 drivers-y := drivers/ sound/
431 endif # KBUILD_EXTMOD
433 ifeq ($(dot-config),1)
434 # In this section, we need .config
436 # Read in dependencies to all Kconfig* files, make sure to run
437 # oldconfig if changes are detected.
438 -include include/config/auto.conf.cmd
439 -include include/config/auto.conf
441 # To avoid any implicit rule to kick in, define an empty command
442 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
444 # If .config is newer than include/config/auto.conf, someone tinkered
445 # with it and forgot to run make oldconfig.
446 # if auto.conf.cmd is missing then we are probarly in a cleaned tree so
447 # we execute the config step to be sure to catch updated Kconfig files
448 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
449 ifeq ($(KBUILD_EXTMOD),)
450 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
452 $(error kernel configuration not valid - run 'make prepare' in $(srctree) to update it)
456 # Dummy target needed, because used as prerequisite
457 include/config/auto.conf: ;
460 # The all: target is the default when no target is given on the
462 # This allow a user to issue only 'make' to build a kernel including modules
463 # Defaults vmlinux but it is usually overriden in the arch makefile
466 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
472 ifdef CONFIG_FRAME_POINTER
473 CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
475 CFLAGS += -fomit-frame-pointer
478 ifdef CONFIG_UNWIND_INFO
479 CFLAGS += -fasynchronous-unwind-tables
482 ifdef CONFIG_DEBUG_INFO
486 include $(srctree)/arch/$(ARCH)/Makefile
488 # arch Makefile may override CC so keep this after arch Makefile is included
489 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
490 CHECKFLAGS += $(NOSTDINC_FLAGS)
492 # warn about C99 declaration after statement
493 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
495 # disable pointer signedness warnings in gcc 4.0
496 CFLAGS += $(call cc-option,-Wno-pointer-sign,)
498 # Default kernel image to build when no specific target is given.
499 # KBUILD_IMAGE may be overruled on the commandline or
500 # set in the environment
501 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
503 export KBUILD_IMAGE ?= vmlinux
506 # INSTALL_PATH specifies where to place the updated kernel and system map
507 # images. Default is /boot, but you can set it to other values
508 export INSTALL_PATH ?= /boot
511 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
512 # relocations required by build roots. This is not defined in the
513 # makefile but the arguement can be passed to make if needed.
516 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
520 # INSTALL_MOD_STRIP, if defined, will cause modules to be
521 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
522 # the default option --strip-debug will be used. Otherwise,
523 # INSTALL_MOD_STRIP will used as the options to the strip command.
525 ifdef INSTALL_MOD_STRIP
526 ifeq ($(INSTALL_MOD_STRIP),1)
527 mod_strip_cmd = $STRIP) --strip-debug
529 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
530 endif # INSTALL_MOD_STRIP=1
533 endif # INSTALL_MOD_STRIP
537 ifeq ($(KBUILD_EXTMOD),)
538 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
540 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
541 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
542 $(net-y) $(net-m) $(libs-y) $(libs-m)))
544 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
546 $(core-n) $(core-) $(drivers-n) $(drivers-) \
547 $(net-n) $(net-) $(libs-n) $(libs-))))
549 init-y := $(patsubst %/, %/built-in.o, $(init-y))
550 core-y := $(patsubst %/, %/built-in.o, $(core-y))
551 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
552 net-y := $(patsubst %/, %/built-in.o, $(net-y))
553 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
554 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
555 libs-y := $(libs-y1) $(libs-y2)
558 # ---------------------------------------------------------------------------
559 # vmlinux is build from the objects selected by $(vmlinux-init) and
560 # $(vmlinux-main). Most are built-in.o files from top-level directories
561 # in the kernel tree, others are specified in arch/$(ARCH)Makefile.
562 # Ordering when linking is important, and $(vmlinux-init) must be first.
567 # +-< $(vmlinux-init)
568 # | +--< init/version.o + more
570 # +--< $(vmlinux-main)
571 # | +--< driver/built-in.o mm/built-in.o + more
573 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
575 # vmlinux version (uname -v) cannot be updated during normal
576 # descending-into-subdirs phase since we do not yet know if we need to
578 # Therefore this step is delayed until just before final link of vmlinux -
579 # except in the kallsyms case where it is done just before adding the
580 # symbols to the kernel.
582 # System.map is generated to document addresses of all kernel symbols
584 vmlinux-init := $(head-y) $(init-y)
585 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
586 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
587 vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds
589 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
590 # May be overridden by arch/$(ARCH)/Makefile
591 quiet_cmd_vmlinux__ ?= LD $@
592 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
593 -T $(vmlinux-lds) $(vmlinux-init) \
594 --start-group $(vmlinux-main) --end-group \
595 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
597 # Generate new vmlinux version
598 quiet_cmd_vmlinux_version = GEN .version
599 cmd_vmlinux_version = set -e; \
600 if [ ! -r .version ]; then \
604 mv .version .old_version; \
605 expr 0$$(cat .old_version) + 1 >.version; \
607 $(MAKE) $(build)=init
609 # Generate System.map
610 quiet_cmd_sysmap = SYSMAP
611 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
614 # If CONFIG_KALLSYMS is set .version is already updated
615 # Generate System.map and verify that the content is consistent
616 # Use + in front of the vmlinux_version rule to silent warning with make -j2
617 # First command is ':' to allow us to use + in front of the rule
618 define rule_vmlinux__
620 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
622 $(call cmd,vmlinux__)
623 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
625 $(Q)$(if $($(quiet)cmd_sysmap), \
626 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
627 $(cmd_sysmap) $@ System.map; \
628 if [ $$? -ne 0 ]; then \
636 ifdef CONFIG_KALLSYMS
637 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
638 # It's a three stage process:
639 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
641 # Running kallsyms on that gives us .tmp_kallsyms1.o with
642 # the right size - vmlinux version (uname -v) is updated during this step
643 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
644 # but due to the added section, some addresses have shifted.
645 # From here, we generate a correct .tmp_kallsyms2.o
646 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
647 # o Verify that the System.map from vmlinux matches the map from
648 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
649 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
650 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
651 # temporary bypass to allow the kernel to be built while the
652 # maintainers work out what went wrong with kallsyms.
654 ifdef CONFIG_KALLSYMS_EXTRA_PASS
660 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
662 define verify_kallsyms
663 $(Q)$(if $($(quiet)cmd_sysmap), \
664 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
665 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
666 $(Q)cmp -s System.map .tmp_System.map || \
667 (echo Inconsistent kallsyms data; \
668 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
669 rm .tmp_kallsyms* ; /bin/false )
672 # Update vmlinux version before link
673 # Use + in front of this rule to silent warning about make -j1
674 # First command is ':' to allow us to use + in front of this rule
675 cmd_ksym_ld = $(cmd_vmlinux__)
678 +$(call cmd,vmlinux_version)
679 $(call cmd,vmlinux__)
680 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
683 # Generate .S file with all kernel symbols
684 quiet_cmd_kallsyms = KSYM $@
685 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
686 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
688 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
689 $(call if_changed_dep,as_o_S)
691 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
694 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
695 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
696 $(call if_changed_rule,ksym_ld)
698 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
699 $(call if_changed,vmlinux__)
701 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
702 $(call if_changed,vmlinux__)
704 # Needs to visit scripts/ before $(KALLSYMS) can be used.
705 $(KALLSYMS): scripts ;
707 # Generate some data for debugging strange kallsyms problems
708 debug_kallsyms: .tmp_map$(last_kallsyms)
710 .tmp_map%: .tmp_vmlinux% FORCE
711 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
717 endif # ifdef CONFIG_KALLSYMS
719 # vmlinux image - including updated kernel symbols
720 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
721 $(call if_changed_rule,vmlinux__)
722 $(Q)rm -f .old_version
724 # The actual objects are generated when descending,
725 # make sure no implicit rule kicks in
726 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
728 # Handle descending into subdirectories listed in $(vmlinux-dirs)
729 # Preset locale variables to speed up the build process. Limit locale
730 # tweaks to this spot to avoid wrong language settings when running
731 # make menuconfig etc.
732 # Error messages still appears in the original language
734 PHONY += $(vmlinux-dirs)
735 $(vmlinux-dirs): prepare scripts
736 $(Q)$(MAKE) $(build)=$@
738 # Build the kernel release string
739 # The KERNELRELEASE is stored in a file named include/config/kernel.release
740 # to be used when executing for example make install or make modules_install
742 # Take the contents of any files called localversion* and the config
743 # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
744 # LOCALVERSION from the command line override all of this
747 space := $(nullstring) # end of line
749 ___localver = $(objtree)/localversion* $(srctree)/localversion*
750 __localver = $(sort $(wildcard $(___localver)))
751 # skip backup files (containing '~')
752 _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
754 localver = $(subst $(space),, \
755 $(shell cat /dev/null $(_localver)) \
756 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
758 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
759 # and if the SCM is know a tag from the SCM is appended.
760 # The appended tag is determinded by the SCM used.
762 # Currently, only git is supported.
763 # Other SCMs can edit scripts/setlocalversion and add the appropriate
765 ifdef CONFIG_LOCALVERSION_AUTO
766 _localver-auto = $(shell $(CONFIG_SHELL) \
767 $(srctree)/scripts/setlocalversion $(srctree))
768 localver-auto = $(LOCALVERSION)$(_localver-auto)
771 localver-full = $(localver)$(localver-auto)
773 # Store (new) KERNELRELASE string in include/config/kernel.release
774 kernelrelease = $(KERNELVERSION)$(localver-full)
775 include/config/kernel.release: include/config/auto.conf FORCE
777 $(Q)echo $(kernelrelease) > $@
780 # Things we need to do before we recursively start building the kernel
781 # or the modules are listed in "prepare".
782 # A multi level approach is used. prepareN is processed before prepareN-1.
783 # archprepare is used in arch Makefiles and when processed asm symlink,
784 # version.h and scripts_basic is processed / created.
786 # Listed in dependency order
787 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
789 # prepare-all is deprecated, use prepare as valid replacement
792 # prepare3 is used to check if we are building in a separate output directory,
794 # 1) Check that make has not been executed in the kernel src $(srctree)
795 # 2) Create the include2 directory, used for the second asm symlink
796 prepare3: include/config/kernel.release
797 ifneq ($(KBUILD_SRC),)
798 @echo ' Using $(srctree) as source for kernel'
799 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
800 echo " $(srctree) is not clean, please run 'make mrproper'";\
801 echo " in the '$(srctree)' directory.";\
804 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
805 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
808 # prepare2 creates a makefile if using a separate output directory
809 prepare2: prepare3 outputmakefile
811 prepare1: prepare2 include/linux/version.h include/asm \
812 include/config/auto.conf
813 ifneq ($(KBUILD_MODULES),)
814 $(Q)mkdir -p $(MODVERDIR)
815 $(Q)rm -f $(MODVERDIR)/*
818 archprepare: prepare1 scripts_basic
820 prepare0: archprepare FORCE
821 $(Q)$(MAKE) $(build)=.
823 # All the preparing..
824 prepare prepare-all: prepare0
826 # Leave this as default for preprocessing vmlinux.lds.S, which is now
827 # done in arch/$(ARCH)/kernel/Makefile
829 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
831 # FIXME: The asm symlink changes when $(ARCH) changes. That's
832 # hard to detect, but I suppose "make mrproper" is a good idea
833 # before switching between archs anyway.
836 @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
837 $(Q)if [ ! -d include ]; then mkdir -p include; fi;
838 @ln -fsn asm-$(ARCH) $@
840 # Generate some files
841 # ---------------------------------------------------------------------------
843 # KERNELRELEASE can change from a few different places, meaning version.h
844 # needs to be updated, so this check is forced on all builds
848 define filechk_version.h
849 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
850 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
853 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
854 echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \
855 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \
859 include/linux/version.h: $(srctree)/Makefile include/config/kernel.release FORCE
860 $(call filechk,version.h)
862 # ---------------------------------------------------------------------------
866 @echo '*** Warning: make $@ is unnecessary now.'
868 # ---------------------------------------------------------------------------
873 # By default, build modules as well
880 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
881 @echo ' Building modules, stage 2.';
882 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
885 # Target to prepare building external modules
886 PHONY += modules_prepare
887 modules_prepare: prepare scripts
889 # Target to install modules
890 PHONY += modules_install
891 modules_install: _modinst_ _modinst_post
895 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
896 echo "Warning: you may need to install module-init-tools"; \
897 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
900 @rm -rf $(MODLIB)/kernel
901 @rm -f $(MODLIB)/source
902 @mkdir -p $(MODLIB)/kernel
903 @ln -s $(srctree) $(MODLIB)/source
904 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
905 rm -f $(MODLIB)/build ; \
906 ln -s $(objtree) $(MODLIB)/build ; \
908 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
910 # If System.map exists, run depmod. This deliberately does not have a
911 # dependency on System.map since that would run the dependency tree on
912 # vmlinux. This depmod is only for convenience to give the initial
913 # boot a modules.dep even before / is mounted read-write. However the
914 # boot script depmod is the master version.
915 ifeq "$(strip $(INSTALL_MOD_PATH))" ""
918 depmod_opts := -b $(INSTALL_MOD_PATH) -r
920 PHONY += _modinst_post
921 _modinst_post: _modinst_
922 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
924 else # CONFIG_MODULES
926 # Modules not configured
927 # ---------------------------------------------------------------------------
929 modules modules_install: FORCE
931 @echo "The present kernel configuration has modules disabled."
932 @echo "Type 'make config' and enable loadable module support."
933 @echo "Then build a kernel with module support enabled."
937 endif # CONFIG_MODULES
940 # Cleaning is done on three levels.
941 # make clean Delete most generated files
942 # Leave enough to build external modules
943 # make mrproper Delete the current configuration, and all generated files
944 # make distclean Remove editor backup files, patch leftover files and the like
946 # Directories & files removed with 'make clean'
947 CLEAN_DIRS += $(MODVERDIR)
948 CLEAN_FILES += vmlinux System.map \
949 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
951 # Directories & files removed with 'make mrproper'
952 MRPROPER_DIRS += include/config include2
953 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
954 include/linux/autoconf.h include/linux/version.h \
955 Module.symvers tags TAGS cscope*
957 # clean - Delete most, but leave enough to build external modules
959 clean: rm-dirs := $(CLEAN_DIRS)
960 clean: rm-files := $(CLEAN_FILES)
961 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
963 PHONY += $(clean-dirs) clean archclean
965 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
967 clean: archclean $(clean-dirs)
970 @find . $(RCS_FIND_IGNORE) \
971 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
972 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
973 -o -name '*.symtypes' \) \
974 -type f -print | xargs rm -f
976 # mrproper - Delete all generated files, including .config
978 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
979 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
980 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
982 PHONY += $(mrproper-dirs) mrproper archmrproper
984 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
986 mrproper: clean archmrproper $(mrproper-dirs)
995 @find $(srctree) $(RCS_FIND_IGNORE) \
996 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
997 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
998 -o -name '.*.rej' -o -size 0 \
999 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1000 -type f -print | xargs rm -f
1003 # Packaging of the kernel to various formats
1004 # ---------------------------------------------------------------------------
1005 # rpm target kept for backward compatibility
1006 package-dir := $(srctree)/scripts/package
1008 %pkg: include/config/kernel.release FORCE
1009 $(Q)$(MAKE) $(build)=$(package-dir) $@
1010 rpm: include/config/kernel.release FORCE
1011 $(Q)$(MAKE) $(build)=$(package-dir) $@
1014 # Brief documentation of the typical targets used
1015 # ---------------------------------------------------------------------------
1017 boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
1018 boards := $(notdir $(boards))
1021 @echo 'Cleaning targets:'
1022 @echo ' clean - remove most generated files but keep the config'
1023 @echo ' mrproper - remove all generated files + config + various backup files'
1025 @echo 'Configuration targets:'
1026 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1028 @echo 'Other generic targets:'
1029 @echo ' all - Build all targets marked with [*]'
1030 @echo '* vmlinux - Build the bare kernel'
1031 @echo '* modules - Build all modules'
1032 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1033 @echo ' dir/ - Build all files in dir and below'
1034 @echo ' dir/file.[ois] - Build specified target only'
1035 @echo ' dir/file.ko - Build module including final link'
1036 @echo ' rpm - Build a kernel as an RPM package'
1037 @echo ' tags/TAGS - Generate tags file for editors'
1038 @echo ' cscope - Generate cscope index'
1039 @echo ' kernelrelease - Output the release version string'
1040 @echo ' kernelversion - Output the version stored in Makefile'
1042 @echo 'Static analysers'
1043 @echo ' checkstack - Generate a list of stack hogs'
1044 @echo ' namespacecheck - Name space analysis on compiled kernel'
1046 @echo 'Kernel packaging:'
1047 @$(MAKE) $(build)=$(package-dir) help
1049 @echo 'Documentation targets:'
1050 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1052 @echo 'Architecture specific targets ($(ARCH)):'
1053 @$(if $(archhelp),$(archhelp),\
1054 echo ' No architecture specific help defined for $(ARCH)')
1057 $(foreach b, $(boards), \
1058 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1061 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1062 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1063 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse)'
1064 @echo ' make C=2 [targets] Force check of all c source with $$CHECK (sparse)'
1066 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1067 @echo 'For further info see the ./README file'
1070 # Documentation targets
1071 # ---------------------------------------------------------------------------
1072 %docs: scripts_basic FORCE
1073 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1075 else # KBUILD_EXTMOD
1078 # External module support.
1079 # When building external modules the kernel used as basis is considered
1080 # read-only, and no consistency checks are made and the make
1081 # system is not used on the basis kernel. If updates are required
1082 # in the basis kernel ordinary make commands (without M=...) must
1085 # The following are the only valid targets when building external
1087 # make M=dir clean Delete all automatically generated files
1088 # make M=dir modules Make all modules in specified dir
1089 # make M=dir Same as 'make M=dir modules'
1090 # make M=dir modules_install
1091 # Install the modules build in the module directory
1092 # Assumes install directory is already created
1094 # We are always building modules
1096 PHONY += crmodverdir
1098 $(Q)mkdir -p $(MODVERDIR)
1099 $(Q)rm -f $(MODVERDIR)/*
1101 PHONY += $(objtree)/Module.symvers
1102 $(objtree)/Module.symvers:
1103 @test -e $(objtree)/Module.symvers || ( \
1105 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1106 echo " is missing; modules will have no dependencies and modversions."; \
1109 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1110 PHONY += $(module-dirs) modules
1111 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1112 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1114 modules: $(module-dirs)
1115 @echo ' Building modules, stage 2.';
1116 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1118 PHONY += modules_install
1119 modules_install: _emodinst_ _emodinst_post
1121 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1124 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1125 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
1127 # Run depmod only is we have System.map and depmod is executable
1128 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1129 cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \
1130 $(DEPMOD) -ae -F System.map \
1131 $(if $(strip $(INSTALL_MOD_PATH)), \
1132 -b $(INSTALL_MOD_PATH) -r) \
1136 PHONY += _emodinst_post
1137 _emodinst_post: _emodinst_
1140 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1142 PHONY += $(clean-dirs) clean
1144 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1146 clean: rm-dirs := $(MODVERDIR)
1147 clean: $(clean-dirs)
1149 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1150 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1151 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1152 -type f -print | xargs rm -f
1155 @echo ' Building external modules.'
1156 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1158 @echo ' modules - default target, build the module(s)'
1159 @echo ' modules_install - install the module'
1160 @echo ' clean - remove generated files in module directory only'
1164 PHONY += prepare scripts
1167 endif # KBUILD_EXTMOD
1169 # Generate tags for editors
1170 # ---------------------------------------------------------------------------
1172 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
1173 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
1174 #Adding $(srctree) adds about 20M on i386 to the size of the output file!
1176 ifeq ($(src),$(obj))
1179 __srctree = $(srctree)/
1182 ifeq ($(ALLSOURCE_ARCHS),)
1184 ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
1186 ALLINCLUDE_ARCHS := $(ARCH)
1189 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.
1190 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
1193 ALLSOURCE_ARCHS := $(ARCH)
1196 ( find $(__srctree) $(RCS_FIND_IGNORE) \
1197 \( -name include -o -name arch \) -prune -o \
1199 for ARCH in $(ALLSOURCE_ARCHS) ; do \
1200 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
1203 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
1205 find $(__srctree)include $(RCS_FIND_IGNORE) \
1206 \( -name config -o -name 'asm-*' \) -prune \
1207 -o -name $1 -print; \
1208 for ARCH in $(ALLINCLUDE_ARCHS) ; do \
1209 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
1212 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
1217 $(call find-sources,'*.[chS]')
1220 $(call find-sources,'Kconfig*')
1222 define all-defconfigs
1223 $(call find-sources,'defconfig')
1226 quiet_cmd_cscope-file = FILELST cscope.files
1227 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
1229 quiet_cmd_cscope = MAKE cscope.out
1230 cmd_cscope = cscope -b
1233 $(call cmd,cscope-file)
1236 quiet_cmd_TAGS = MAKE $@
1239 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
1240 echo "-I __initdata,__exitdata,__acquires,__releases \
1241 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1242 --extra=+f --c-kinds=+px"`; \
1243 $(all-sources) | xargs etags $$ETAGSF -a; \
1244 if test "x$$ETAGSF" = x; then \
1245 $(all-kconfigs) | xargs etags -a \
1246 --regex='/^config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
1247 $(all-defconfigs) | xargs etags -a \
1248 --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
1256 quiet_cmd_tags = MAKE $@
1259 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
1260 echo "-I __initdata,__exitdata,__acquires,__releases \
1261 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1262 --extra=+f --c-kinds=+px"`; \
1263 $(all-sources) | xargs ctags $$CTAGSF -a
1270 # Scripts to check various things for consistency
1271 # ---------------------------------------------------------------------------
1274 find * $(RCS_FIND_IGNORE) \
1275 -name '*.[hcS]' -type f -print | sort \
1276 | xargs $(PERL) -w scripts/checkincludes.pl
1279 find * $(RCS_FIND_IGNORE) \
1280 -name '*.[hcS]' -type f -print | sort \
1281 | xargs $(PERL) -w scripts/checkversion.pl
1284 $(PERL) $(srctree)/scripts/namespace.pl
1286 endif #ifeq ($(config-targets),1)
1287 endif #ifeq ($(mixed-targets),1)
1289 PHONY += checkstack kernelrelease kernelversion
1291 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1292 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1295 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
1296 $(error kernelrelease not valid - run 'make prepare' to update it))
1298 @echo $(KERNELVERSION)
1301 # ---------------------------------------------------------------------------
1302 # Single targets are compatible with:
1303 # - build whith mixed source and output
1304 # - build with separate output dir 'make O=...'
1305 # - external modules
1307 # target-dir => where to store outputfile
1308 # build-dir => directory in kernel source tree to use
1310 ifeq ($(KBUILD_EXTMOD),)
1311 build-dir = $(patsubst %/,%,$(dir $@))
1312 target-dir = $(dir $@)
1314 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1315 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1316 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1319 %.s: %.c prepare scripts FORCE
1320 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1321 %.i: %.c prepare scripts FORCE
1322 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1323 %.o: %.c prepare scripts FORCE
1324 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1325 %.lst: %.c prepare scripts FORCE
1326 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1327 %.s: %.S prepare scripts FORCE
1328 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1329 %.o: %.S prepare scripts FORCE
1330 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1331 %.symtypes: %.c prepare scripts FORCE
1332 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1335 / %/: prepare scripts FORCE
1336 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1337 $(build)=$(build-dir)
1338 %.ko: prepare scripts FORCE
1339 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1340 $(build)=$(build-dir) $(@:.ko=.o)
1341 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1343 # FIXME Should go into a make.lib or something
1344 # ===========================================================================
1346 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1347 cmd_rmdirs = rm -rf $(rm-dirs)
1349 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1350 cmd_rmfiles = rm -f $(rm-files)
1353 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
1354 $(NOSTDINC_FLAGS) $(CPPFLAGS) \
1355 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
1357 quiet_cmd_as_o_S = AS $@
1358 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1360 # read all saved command lines
1362 targets := $(wildcard $(sort $(targets)))
1363 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1365 ifneq ($(cmd_files),)
1366 $(cmd_files): ; # Do not try to update included dependency files
1367 include $(cmd_files)
1370 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1372 # $(Q)$(MAKE) $(clean)=dir
1373 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1375 endif # skip-makefile
1381 # Declare the contents of the .PHONY variable as phony. We keep that
1382 # information in a variable se we can use it in if_changed and friends.