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 # Add custom flags here to avoid conflict with updates
14 EXTRAVERSION := $(EXTRAVERSION)-omap1
16 # Do not print "Entering directory ..."
17 MAKEFLAGS += --no-print-directory
19 # We are using a recursive build, so we need to do a little thinking
20 # to get the ordering right.
22 # Most importantly: sub-Makefiles should only ever modify files in
23 # their own directory. If in some directory we have a dependency on
24 # a file in another dir (which doesn't happen often, but it's often
25 # unavoidable when linking the built-in.o targets which finally
26 # turn into vmlinux), we will call a sub make in that other dir, and
27 # after that we are sure that everything which is in that other dir
30 # The only cases where we need to modify files which have global
31 # effects are thus separated out and done before the recursive
32 # descending is started. They are now explicitly listed as the
35 # To put more focus on warnings, be less verbose as default
36 # Use 'make V=1' to see the full commands
39 ifeq ("$(origin V)", "command line")
47 # Call sparse as part of compilation of C files
48 # Use 'make C=1' to enable sparse checking
51 ifeq ("$(origin C)", "command line")
52 KBUILD_CHECKSRC = $(C)
55 ifndef KBUILD_CHECKSRC
59 # Use make M=dir to specify directory of external module to build
60 # Old syntax make ... SUBDIRS=$PWD is still supported
61 # Setting the environment variable KBUILD_EXTMOD take precedence
63 KBUILD_EXTMOD ?= $(SUBDIRS)
66 ifeq ("$(origin M)", "command line")
72 # kbuild supports saving output files in a separate directory.
73 # To locate output files in a separate directory two syntaxes are supported.
74 # In both cases the working directory must be the root of the kernel src.
76 # Use "make O=dir/to/store/output/files/"
78 # 2) Set KBUILD_OUTPUT
79 # Set the environment variable KBUILD_OUTPUT to point to the directory
80 # where the output files shall be placed.
81 # export KBUILD_OUTPUT=dir/to/store/output/files/
84 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
88 # KBUILD_SRC is set on invocation of make in OBJ directory
89 # KBUILD_SRC is not intended to be used by the regular user (for now)
92 # OK, Make called in directory where kernel src resides
93 # Do we want to locate output files in a separate directory?
95 ifeq ("$(origin O)", "command line")
100 # That's our default target when none is given on the command line
104 ifneq ($(KBUILD_OUTPUT),)
105 # Invoke a second make in the output directory, passing relevant variables
106 # check that the output directory actually exists
107 saved-output := $(KBUILD_OUTPUT)
108 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
109 $(if $(KBUILD_OUTPUT),, \
110 $(error output directory "$(saved-output)" does not exist))
112 PHONY += $(MAKECMDGOALS)
114 $(filter-out _all,$(MAKECMDGOALS)) _all:
115 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
116 KBUILD_SRC=$(CURDIR) \
117 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
119 # Leave processing to above invocation of make
121 endif # ifneq ($(KBUILD_OUTPUT),)
122 endif # ifeq ($(KBUILD_SRC),)
124 # We process the rest of the Makefile if this is the final invocation of make
125 ifeq ($(skip-makefile),)
127 # If building an external module we do not care about the all: rule
128 # but instead _all depend on modules
130 ifeq ($(KBUILD_EXTMOD),)
136 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
138 # FIXME - TOPDIR is obsolete, use srctree/objtree
143 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
145 export srctree objtree VPATH TOPDIR
148 # SUBARCH tells the usermode build what the underlying arch is. That is set
149 # first, and if a usermode build is happening, the "ARCH=um" on the command
150 # line overrides the setting of ARCH below. If a native build is happening,
151 # then ARCH is assigned, getting whatever value it gets normally, and
152 # SUBARCH is subsequently ignored.
154 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
155 -e s/arm.*/arm/ -e s/sa110/arm/ \
156 -e s/s390x/s390/ -e s/parisc64/parisc/ \
157 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
160 # Cross compiling and selecting different set of gcc/bin-utils
161 # ---------------------------------------------------------------------------
163 # When performing cross compilation for other architectures ARCH shall be set
164 # to the target architecture. (See arch/* for the possibilities).
165 # ARCH can be set during invocation of make:
167 # Another way is to have ARCH set in the environment.
168 # The default ARCH is the host where make is executed.
170 # CROSS_COMPILE specify the prefix used for all executables used
171 # during compilation. Only gcc and related bin-utils executables
172 # are prefixed with $(CROSS_COMPILE).
173 # CROSS_COMPILE can be set on the command line
174 # make CROSS_COMPILE=ia64-linux-
175 # Alternatively CROSS_COMPILE can be set in the environment.
176 # Default value for CROSS_COMPILE is not to prefix executables
177 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
180 CROSS_COMPILE ?= arm-linux-
182 # Architecture as present in compile.h
183 UTS_MACHINE := $(ARCH)
185 # SHELL used by kbuild
186 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
187 else if [ -x /bin/bash ]; then echo /bin/bash; \
188 else echo sh; fi ; fi)
192 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
195 # Decide whether to build built-in, modular, or both.
196 # Normally, just do built-in.
201 # If we have only "make modules", don't compile built-in objects.
202 # When we're building modules with modversions, we need to consider
203 # the built-in objects during the descend as well, in order to
204 # make sure the checksums are uptodate before we record them.
206 ifeq ($(MAKECMDGOALS),modules)
207 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
210 # If we have "make <whatever> modules", compile modules
211 # in addition to whatever we do anyway.
212 # Just "make" or "make all" shall build modules as well
214 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
218 ifeq ($(MAKECMDGOALS),)
222 export KBUILD_MODULES KBUILD_BUILTIN
223 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
226 # ---------------------------------------------------------------------------
228 # Normally, we echo the whole command before executing it. By making
229 # that echo $($(quiet)$(cmd)), we now have the possibility to set
230 # $(quiet) to choose other forms of output instead, e.g.
232 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
233 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
235 # If $(quiet) is empty, the whole command will be printed.
236 # If it is set to "quiet_", only the short version will be printed.
237 # If it is set to "silent_", nothing wil be printed at all, since
238 # the variable $(silent_cmd_cc_o_c) doesn't exist.
240 # A simple variant is to prefix commands with $(Q) - that's useful
241 # for commands that shall be hidden in non-verbose mode.
245 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
246 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
248 ifeq ($(KBUILD_VERBOSE),1)
256 # If the user is running make -s (silent mode), suppress echoing of
259 ifneq ($(findstring s,$(MAKEFLAGS)),)
263 export quiet Q KBUILD_VERBOSE
266 # Look for make include files relative to root of kernel src
267 MAKEFLAGS += --include-dir=$(srctree)
269 # We need some generic definitions
270 include $(srctree)/scripts/Kbuild.include
272 # For maximum performance (+ possibly random breakage, uncomment
277 # Make variables (CC, etc...)
279 AS = $(CROSS_COMPILE)as
280 LD = $(CROSS_COMPILE)ld
281 CC = $(CROSS_COMPILE)gcc
283 AR = $(CROSS_COMPILE)ar
284 NM = $(CROSS_COMPILE)nm
285 STRIP = $(CROSS_COMPILE)strip
286 OBJCOPY = $(CROSS_COMPILE)objcopy
287 OBJDUMP = $(CROSS_COMPILE)objdump
289 GENKSYMS = scripts/genksyms/genksyms
290 DEPMOD = /sbin/depmod
291 KALLSYMS = scripts/kallsyms
295 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
297 CFLAGS_MODULE = $(MODFLAGS)
298 AFLAGS_MODULE = $(MODFLAGS)
304 # Use LINUXINCLUDE when you must reference the include/ directory.
305 # Needed to be compatible with the O= option
306 LINUXINCLUDE := -Iinclude \
307 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
308 -include include/linux/autoconf.h
310 CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
312 CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
313 -fno-strict-aliasing -fno-common
314 AFLAGS := -D__ASSEMBLY__
316 # Read KERNELRELEASE from .kernelrelease (if it exists)
317 KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null)
318 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
320 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \
321 ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
322 CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
323 HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
325 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
326 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
327 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
329 # When compiling out-of-tree modules, put MODVERDIR in the module
330 # tree rather than in the kernel tree. The kernel tree might
332 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
334 # Files to ignore in find ... statements
336 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
337 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
339 # ===========================================================================
340 # Rules shared between *config targets and build targets
342 # Basic helpers built in scripts/
343 PHONY += scripts_basic
345 $(Q)$(MAKE) $(build)=scripts/basic
347 # To avoid any implicit rule to kick in, define an empty command.
348 scripts/basic/%: scripts_basic ;
350 PHONY += outputmakefile
351 # outputmakefile generates a Makefile in the output directory, if using a
352 # separate output directory. This allows convenient use of make in the
355 ifneq ($(KBUILD_SRC),)
356 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
357 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
360 # To make sure we do not include .config for any of the *config targets
361 # catch them early, and hand them over to scripts/kconfig/Makefile
362 # It is allowed to specify more targets when calling make, including
363 # mixing *config targets and build targets.
364 # For example 'make oldconfig all'.
365 # Detect when mixed targets is specified, and make a second invocation
366 # of make so .config is not included in this case either (for *config).
368 no-dot-config-targets := clean mrproper distclean \
369 cscope TAGS tags help %docs check%
375 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
376 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
381 ifeq ($(KBUILD_EXTMOD),)
382 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
384 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
390 ifeq ($(mixed-targets),1)
391 # ===========================================================================
392 # We're called with mixed targets (*config and build targets).
393 # Handle them one by one.
396 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
399 ifeq ($(config-targets),1)
400 # ===========================================================================
401 # *config targets only - make sure prerequisites are updated, and descend
402 # in scripts/kconfig to make the *config target
404 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
405 # KBUILD_DEFCONFIG may point out an alternative default configuration
406 # used for 'make defconfig'
407 include $(srctree)/arch/$(ARCH)/Makefile
408 export KBUILD_DEFCONFIG
410 config %config: scripts_basic outputmakefile FORCE
411 $(Q)mkdir -p include/linux
412 $(Q)$(MAKE) $(build)=scripts/kconfig $@
413 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
416 # ===========================================================================
417 # Build targets only - this includes vmlinux, arch specific targets, clean
418 # targets and others. In general all targets except *config targets.
420 ifeq ($(KBUILD_EXTMOD),)
421 # Additional helpers built in scripts/
422 # Carefully list dependencies so we do not try to build scripts twice
425 scripts: scripts_basic include/config/MARKER
426 $(Q)$(MAKE) $(build)=$(@)
428 scripts_basic: include/linux/autoconf.h
430 # Objects we will link into vmlinux / subdirs we need to visit
432 drivers-y := drivers/ sound/
436 endif # KBUILD_EXTMOD
438 ifeq ($(dot-config),1)
439 # In this section, we need .config
441 # Read in dependencies to all Kconfig* files, make sure to run
442 # oldconfig if changes are detected.
447 # If .config needs to be updated, it will be done via the dependency
448 # that autoconf has on .config.
449 # To avoid any implicit rule to kick in, define an empty command
450 .config .kconfig.d: ;
452 # If .config is newer than include/linux/autoconf.h, someone tinkered
453 # with it and forgot to run make oldconfig.
454 # If kconfig.d is missing then we are probarly in a cleaned tree so
455 # we execute the config step to be sure to catch updated Kconfig files
456 include/linux/autoconf.h: .kconfig.d .config
457 $(Q)mkdir -p include/linux
458 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
460 # Dummy target needed, because used as prerequisite
461 include/linux/autoconf.h: ;
464 # The all: target is the default when no target is given on the
466 # This allow a user to issue only 'make' to build a kernel including modules
467 # Defaults vmlinux but it is usually overriden in the arch makefile
470 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
476 ifdef CONFIG_FRAME_POINTER
477 CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
479 CFLAGS += -fomit-frame-pointer
482 ifdef CONFIG_UNWIND_INFO
483 CFLAGS += -fasynchronous-unwind-tables
486 ifdef CONFIG_DEBUG_INFO
490 include $(srctree)/arch/$(ARCH)/Makefile
492 # arch Makefile may override CC so keep this after arch Makefile is included
493 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
494 CHECKFLAGS += $(NOSTDINC_FLAGS)
496 # warn about C99 declaration after statement
497 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
499 # disable pointer signedness warnings in gcc 4.0
500 CFLAGS += $(call cc-option,-Wno-pointer-sign,)
502 # Default kernel image to build when no specific target is given.
503 # KBUILD_IMAGE may be overruled on the commandline or
504 # set in the environment
505 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
507 export KBUILD_IMAGE ?= vmlinux
510 # INSTALL_PATH specifies where to place the updated kernel and system map
511 # images. Default is /boot, but you can set it to other values
512 export INSTALL_PATH ?= /boot
515 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
516 # relocations required by build roots. This is not defined in the
517 # makefile but the arguement can be passed to make if needed.
520 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
524 ifeq ($(KBUILD_EXTMOD),)
525 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
527 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
528 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
529 $(net-y) $(net-m) $(libs-y) $(libs-m)))
531 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
533 $(core-n) $(core-) $(drivers-n) $(drivers-) \
534 $(net-n) $(net-) $(libs-n) $(libs-))))
536 init-y := $(patsubst %/, %/built-in.o, $(init-y))
537 core-y := $(patsubst %/, %/built-in.o, $(core-y))
538 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
539 net-y := $(patsubst %/, %/built-in.o, $(net-y))
540 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
541 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
542 libs-y := $(libs-y1) $(libs-y2)
545 # ---------------------------------------------------------------------------
546 # vmlinux is build from the objects selected by $(vmlinux-init) and
547 # $(vmlinux-main). Most are built-in.o files from top-level directories
548 # in the kernel tree, others are specified in arch/$(ARCH)Makefile.
549 # Ordering when linking is important, and $(vmlinux-init) must be first.
554 # +-< $(vmlinux-init)
555 # | +--< init/version.o + more
557 # +--< $(vmlinux-main)
558 # | +--< driver/built-in.o mm/built-in.o + more
560 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
562 # vmlinux version (uname -v) cannot be updated during normal
563 # descending-into-subdirs phase since we do not yet know if we need to
565 # Therefore this step is delayed until just before final link of vmlinux -
566 # except in the kallsyms case where it is done just before adding the
567 # symbols to the kernel.
569 # System.map is generated to document addresses of all kernel symbols
571 vmlinux-init := $(head-y) $(init-y)
572 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
573 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
574 vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds
576 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
577 # May be overridden by arch/$(ARCH)/Makefile
578 quiet_cmd_vmlinux__ ?= LD $@
579 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
580 -T $(vmlinux-lds) $(vmlinux-init) \
581 --start-group $(vmlinux-main) --end-group \
582 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
584 # Generate new vmlinux version
585 quiet_cmd_vmlinux_version = GEN .version
586 cmd_vmlinux_version = set -e; \
587 if [ ! -r .version ]; then \
591 mv .version .old_version; \
592 expr 0$$(cat .old_version) + 1 >.version; \
594 $(MAKE) $(build)=init
596 # Generate System.map
597 quiet_cmd_sysmap = SYSMAP
598 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
601 # If CONFIG_KALLSYMS is set .version is already updated
602 # Generate System.map and verify that the content is consistent
603 # Use + in front of the vmlinux_version rule to silent warning with make -j2
604 # First command is ':' to allow us to use + in front of the rule
605 define rule_vmlinux__
607 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
609 $(call cmd,vmlinux__)
610 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
612 $(Q)$(if $($(quiet)cmd_sysmap), \
613 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
614 $(cmd_sysmap) $@ System.map; \
615 if [ $$? -ne 0 ]; then \
623 ifdef CONFIG_KALLSYMS
624 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
625 # It's a three stage process:
626 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
628 # Running kallsyms on that gives us .tmp_kallsyms1.o with
629 # the right size - vmlinux version (uname -v) is updated during this step
630 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
631 # but due to the added section, some addresses have shifted.
632 # From here, we generate a correct .tmp_kallsyms2.o
633 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
634 # o Verify that the System.map from vmlinux matches the map from
635 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
636 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
637 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
638 # temporary bypass to allow the kernel to be built while the
639 # maintainers work out what went wrong with kallsyms.
641 ifdef CONFIG_KALLSYMS_EXTRA_PASS
647 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
649 define verify_kallsyms
650 $(Q)$(if $($(quiet)cmd_sysmap), \
651 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
652 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
653 $(Q)cmp -s System.map .tmp_System.map || \
654 (echo Inconsistent kallsyms data; \
655 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
656 rm .tmp_kallsyms* ; /bin/false )
659 # Update vmlinux version before link
660 # Use + in front of this rule to silent warning about make -j1
661 # First command is ':' to allow us to use + in front of this rule
662 cmd_ksym_ld = $(cmd_vmlinux__)
665 +$(call cmd,vmlinux_version)
666 $(call cmd,vmlinux__)
667 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
670 # Generate .S file with all kernel symbols
671 quiet_cmd_kallsyms = KSYM $@
672 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
673 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
675 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
676 $(call if_changed_dep,as_o_S)
678 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
681 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
682 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
683 $(call if_changed_rule,ksym_ld)
685 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
686 $(call if_changed,vmlinux__)
688 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
689 $(call if_changed,vmlinux__)
691 # Needs to visit scripts/ before $(KALLSYMS) can be used.
692 $(KALLSYMS): scripts ;
694 # Generate some data for debugging strange kallsyms problems
695 debug_kallsyms: .tmp_map$(last_kallsyms)
697 .tmp_map%: .tmp_vmlinux% FORCE
698 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
704 endif # ifdef CONFIG_KALLSYMS
706 # vmlinux image - including updated kernel symbols
707 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
708 $(call if_changed_rule,vmlinux__)
709 $(Q)rm -f .old_version
711 # The actual objects are generated when descending,
712 # make sure no implicit rule kicks in
713 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
715 # Handle descending into subdirectories listed in $(vmlinux-dirs)
716 # Preset locale variables to speed up the build process. Limit locale
717 # tweaks to this spot to avoid wrong language settings when running
718 # make menuconfig etc.
719 # Error messages still appears in the original language
721 PHONY += $(vmlinux-dirs)
722 $(vmlinux-dirs): prepare scripts
723 $(Q)$(MAKE) $(build)=$@
725 # Build the kernel release string
726 # The KERNELRELEASE is stored in a file named .kernelrelease
727 # to be used when executing for example make install or make modules_install
729 # Take the contents of any files called localversion* and the config
730 # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
731 # LOCALVERSION from the command line override all of this
734 space := $(nullstring) # end of line
736 ___localver = $(objtree)/localversion* $(srctree)/localversion*
737 __localver = $(sort $(wildcard $(___localver)))
738 # skip backup files (containing '~')
739 _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
741 localver = $(subst $(space),, \
742 $(shell cat /dev/null $(_localver)) \
743 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
745 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
746 # and if the SCM is know a tag from the SCM is appended.
747 # The appended tag is determinded by the SCM used.
749 # Currently, only git is supported.
750 # Other SCMs can edit scripts/setlocalversion and add the appropriate
752 ifdef CONFIG_LOCALVERSION_AUTO
753 _localver-auto = $(shell $(CONFIG_SHELL) \
754 $(srctree)/scripts/setlocalversion $(srctree))
755 localver-auto = $(LOCALVERSION)$(_localver-auto)
758 localver-full = $(localver)$(localver-auto)
760 # Store (new) KERNELRELASE string in .kernelrelease
761 kernelrelease = $(KERNELVERSION)$(localver-full)
762 .kernelrelease: FORCE
764 $(Q)echo $(kernelrelease) > $@
767 # Things we need to do before we recursively start building the kernel
768 # or the modules are listed in "prepare".
769 # A multi level approach is used. prepareN is processed before prepareN-1.
770 # archprepare is used in arch Makefiles and when processed asm symlink,
771 # version.h and scripts_basic is processed / created.
773 # Listed in dependency order
774 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
776 # prepare-all is deprecated, use prepare as valid replacement
779 # prepare3 is used to check if we are building in a separate output directory,
781 # 1) Check that make has not been executed in the kernel src $(srctree)
782 # 2) Create the include2 directory, used for the second asm symlink
783 prepare3: .kernelrelease
784 ifneq ($(KBUILD_SRC),)
785 @echo ' Using $(srctree) as source for kernel'
786 $(Q)if [ -f $(srctree)/.config ]; then \
787 echo " $(srctree) is not clean, please run 'make mrproper'";\
788 echo " in the '$(srctree)' directory.";\
791 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
792 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
795 # prepare2 creates a makefile if using a separate output directory
796 prepare2: prepare3 outputmakefile
798 prepare1: prepare2 include/linux/version.h include/asm \
799 include/config/MARKER
800 ifneq ($(KBUILD_MODULES),)
801 $(Q)mkdir -p $(MODVERDIR)
802 $(Q)rm -f $(MODVERDIR)/*
805 archprepare: prepare1 scripts_basic
807 prepare0: archprepare FORCE
808 $(Q)$(MAKE) $(build)=.
810 # All the preparing..
811 prepare prepare-all: prepare0
813 # Leave this as default for preprocessing vmlinux.lds.S, which is now
814 # done in arch/$(ARCH)/kernel/Makefile
816 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
818 # FIXME: The asm symlink changes when $(ARCH) changes. That's
819 # hard to detect, but I suppose "make mrproper" is a good idea
820 # before switching between archs anyway.
823 @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
824 $(Q)if [ ! -d include ]; then mkdir -p include; fi;
825 @ln -fsn asm-$(ARCH) $@
827 # Split autoconf.h into include/linux/config/*
829 include/config/MARKER: scripts/basic/split-include include/linux/autoconf.h
830 @echo ' SPLIT include/linux/autoconf.h -> include/config/*'
831 @scripts/basic/split-include include/linux/autoconf.h include/config
834 # Generate some files
835 # ---------------------------------------------------------------------------
837 # KERNELRELEASE can change from a few different places, meaning version.h
838 # needs to be updated, so this check is forced on all builds
842 define filechk_version.h
843 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
844 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
847 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
848 echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \
849 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \
853 include/linux/version.h: $(srctree)/Makefile .config .kernelrelease FORCE
854 $(call filechk,version.h)
856 # ---------------------------------------------------------------------------
860 @echo '*** Warning: make $@ is unnecessary now.'
862 # ---------------------------------------------------------------------------
867 # By default, build modules as well
874 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
875 @echo ' Building modules, stage 2.';
876 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
879 # Target to prepare building external modules
880 PHONY += modules_prepare
881 modules_prepare: prepare scripts
883 # Target to install modules
884 PHONY += modules_install
885 modules_install: _modinst_ _modinst_post
889 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
890 echo "Warning: you may need to install module-init-tools"; \
891 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
894 @rm -rf $(MODLIB)/kernel
895 @rm -f $(MODLIB)/source
896 @mkdir -p $(MODLIB)/kernel
897 @ln -s $(srctree) $(MODLIB)/source
898 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
899 rm -f $(MODLIB)/build ; \
900 ln -s $(objtree) $(MODLIB)/build ; \
902 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
904 # If System.map exists, run depmod. This deliberately does not have a
905 # dependency on System.map since that would run the dependency tree on
906 # vmlinux. This depmod is only for convenience to give the initial
907 # boot a modules.dep even before / is mounted read-write. However the
908 # boot script depmod is the master version.
909 ifeq "$(strip $(INSTALL_MOD_PATH))" ""
912 depmod_opts := -b $(INSTALL_MOD_PATH) -r
914 PHONY += _modinst_post
915 _modinst_post: _modinst_
916 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
918 else # CONFIG_MODULES
920 # Modules not configured
921 # ---------------------------------------------------------------------------
923 modules modules_install: FORCE
925 @echo "The present kernel configuration has modules disabled."
926 @echo "Type 'make config' and enable loadable module support."
927 @echo "Then build a kernel with module support enabled."
931 endif # CONFIG_MODULES
934 # Cleaning is done on three levels.
935 # make clean Delete most generated files
936 # Leave enough to build external modules
937 # make mrproper Delete the current configuration, and all generated files
938 # make distclean Remove editor backup files, patch leftover files and the like
940 # Directories & files removed with 'make clean'
941 CLEAN_DIRS += $(MODVERDIR)
942 CLEAN_FILES += vmlinux System.map \
943 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
945 # Directories & files removed with 'make mrproper'
946 MRPROPER_DIRS += include/config include2
947 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
948 include/linux/autoconf.h include/linux/version.h \
949 .kernelrelease Module.symvers tags TAGS cscope*
951 # clean - Delete most, but leave enough to build external modules
953 clean: rm-dirs := $(CLEAN_DIRS)
954 clean: rm-files := $(CLEAN_FILES)
955 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
957 PHONY += $(clean-dirs) clean archclean
959 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
961 clean: archclean $(clean-dirs)
964 @find . $(RCS_FIND_IGNORE) \
965 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
966 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
967 -type f -print | xargs rm -f
969 # mrproper - Delete all generated files, including .config
971 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
972 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
973 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
975 PHONY += $(mrproper-dirs) mrproper archmrproper
977 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
979 mrproper: clean archmrproper $(mrproper-dirs)
988 @find $(srctree) $(RCS_FIND_IGNORE) \
989 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
990 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
991 -o -name '.*.rej' -o -size 0 \
992 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
993 -type f -print | xargs rm -f
996 # Packaging of the kernel to various formats
997 # ---------------------------------------------------------------------------
998 # rpm target kept for backward compatibility
999 package-dir := $(srctree)/scripts/package
1002 $(Q)$(MAKE) $(build)=$(package-dir) $@
1004 $(Q)$(MAKE) $(build)=$(package-dir) $@
1007 # Brief documentation of the typical targets used
1008 # ---------------------------------------------------------------------------
1010 boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
1011 boards := $(notdir $(boards))
1014 @echo 'Cleaning targets:'
1015 @echo ' clean - remove most generated files but keep the config'
1016 @echo ' mrproper - remove all generated files + config + various backup files'
1018 @echo 'Configuration targets:'
1019 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1021 @echo 'Other generic targets:'
1022 @echo ' all - Build all targets marked with [*]'
1023 @echo '* vmlinux - Build the bare kernel'
1024 @echo '* modules - Build all modules'
1025 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1026 @echo ' dir/ - Build all files in dir and below'
1027 @echo ' dir/file.[ois] - Build specified target only'
1028 @echo ' dir/file.ko - Build module including final link'
1029 @echo ' rpm - Build a kernel as an RPM package'
1030 @echo ' tags/TAGS - Generate tags file for editors'
1031 @echo ' cscope - Generate cscope index'
1032 @echo ' kernelrelease - Output the release version string'
1033 @echo ' kernelversion - Output the version stored in Makefile'
1035 @echo 'Static analysers'
1036 @echo ' checkstack - Generate a list of stack hogs'
1037 @echo ' namespacecheck - Name space analysis on compiled kernel'
1039 @echo 'Kernel packaging:'
1040 @$(MAKE) $(build)=$(package-dir) help
1042 @echo 'Documentation targets:'
1043 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1045 @echo 'Architecture specific targets ($(ARCH)):'
1046 @$(if $(archhelp),$(archhelp),\
1047 echo ' No architecture specific help defined for $(ARCH)')
1050 $(foreach b, $(boards), \
1051 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1054 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1055 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1056 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse)'
1057 @echo ' make C=2 [targets] Force check of all c source with $$CHECK (sparse)'
1059 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1060 @echo 'For further info see the ./README file'
1063 # Documentation targets
1064 # ---------------------------------------------------------------------------
1065 %docs: scripts_basic FORCE
1066 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1068 else # KBUILD_EXTMOD
1071 # External module support.
1072 # When building external modules the kernel used as basis is considered
1073 # read-only, and no consistency checks are made and the make
1074 # system is not used on the basis kernel. If updates are required
1075 # in the basis kernel ordinary make commands (without M=...) must
1078 # The following are the only valid targets when building external
1080 # make M=dir clean Delete all automatically generated files
1081 # make M=dir modules Make all modules in specified dir
1082 # make M=dir Same as 'make M=dir modules'
1083 # make M=dir modules_install
1084 # Install the modules build in the module directory
1085 # Assumes install directory is already created
1087 # We are always building modules
1089 PHONY += crmodverdir
1091 $(Q)mkdir -p $(MODVERDIR)
1092 $(Q)rm -f $(MODVERDIR)/*
1094 PHONY += $(objtree)/Module.symvers
1095 $(objtree)/Module.symvers:
1096 @test -e $(objtree)/Module.symvers || ( \
1098 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1099 echo " is missing; modules will have no dependencies and modversions."; \
1102 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1103 PHONY += $(module-dirs) modules
1104 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1105 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1107 modules: $(module-dirs)
1108 @echo ' Building modules, stage 2.';
1109 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1111 PHONY += modules_install
1112 modules_install: _emodinst_ _emodinst_post
1114 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1117 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1118 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
1120 # Run depmod only is we have System.map and depmod is executable
1121 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1122 cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \
1123 $(DEPMOD) -ae -F System.map \
1124 $(if $(strip $(INSTALL_MOD_PATH)), \
1125 -b $(INSTALL_MOD_PATH) -r) \
1129 PHONY += _emodinst_post
1130 _emodinst_post: _emodinst_
1133 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1135 PHONY += $(clean-dirs) clean
1137 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1139 clean: rm-dirs := $(MODVERDIR)
1140 clean: $(clean-dirs)
1142 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1143 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1144 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1145 -type f -print | xargs rm -f
1148 @echo ' Building external modules.'
1149 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1151 @echo ' modules - default target, build the module(s)'
1152 @echo ' modules_install - install the module'
1153 @echo ' clean - remove generated files in module directory only'
1157 PHONY += prepare scripts
1160 endif # KBUILD_EXTMOD
1162 # Generate tags for editors
1163 # ---------------------------------------------------------------------------
1165 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
1166 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
1167 #Adding $(srctree) adds about 20M on i386 to the size of the output file!
1169 ifeq ($(src),$(obj))
1172 __srctree = $(srctree)/
1175 ifeq ($(ALLSOURCE_ARCHS),)
1177 ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
1179 ALLINCLUDE_ARCHS := $(ARCH)
1182 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.
1183 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
1186 ALLSOURCE_ARCHS := $(ARCH)
1189 ( find $(__srctree) $(RCS_FIND_IGNORE) \
1190 \( -name include -o -name arch \) -prune -o \
1191 -name '*.[chS]' -print; \
1192 for ARCH in $(ALLSOURCE_ARCHS) ; do \
1193 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
1194 -name '*.[chS]' -print; \
1196 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
1197 -name '*.[chS]' -print; \
1198 find $(__srctree)include $(RCS_FIND_IGNORE) \
1199 \( -name config -o -name 'asm-*' \) -prune \
1200 -o -name '*.[chS]' -print; \
1201 for ARCH in $(ALLINCLUDE_ARCHS) ; do \
1202 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
1203 -name '*.[chS]' -print; \
1205 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
1206 -name '*.[chS]' -print )
1209 quiet_cmd_cscope-file = FILELST cscope.files
1210 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
1212 quiet_cmd_cscope = MAKE cscope.out
1213 cmd_cscope = cscope -b
1216 $(call cmd,cscope-file)
1219 quiet_cmd_TAGS = MAKE $@
1222 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
1223 echo "-I __initdata,__exitdata,__acquires,__releases \
1224 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1225 --extra=+f --c-kinds=+px"`; \
1226 $(all-sources) | xargs etags $$ETAGSF -a
1233 quiet_cmd_tags = MAKE $@
1236 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
1237 echo "-I __initdata,__exitdata,__acquires,__releases \
1238 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1239 --extra=+f --c-kinds=+px"`; \
1240 $(all-sources) | xargs ctags $$CTAGSF -a
1247 # Scripts to check various things for consistency
1248 # ---------------------------------------------------------------------------
1251 find * $(RCS_FIND_IGNORE) \
1252 -name '*.[hcS]' -type f -print | sort \
1253 | xargs $(PERL) -w scripts/checkincludes.pl
1256 find * $(RCS_FIND_IGNORE) \
1257 -name '*.[hcS]' -type f -print | sort \
1258 | xargs $(PERL) -w scripts/checkversion.pl
1261 $(PERL) $(srctree)/scripts/namespace.pl
1263 endif #ifeq ($(config-targets),1)
1264 endif #ifeq ($(mixed-targets),1)
1268 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1269 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1272 $(if $(wildcard .kernelrelease), $(Q)echo $(KERNELRELEASE), \
1273 $(error kernelrelease not valid - run 'make *config' to update it))
1275 @echo $(KERNELVERSION)
1278 # ---------------------------------------------------------------------------
1279 # Single targets are compatible with:
1280 # - build whith mixed source and output
1281 # - build with separate output dir 'make O=...'
1282 # - external modules
1284 # target-dir => where to store outputfile
1285 # build-dir => directory in kernel source tree to use
1287 ifeq ($(KBUILD_EXTMOD),)
1288 build-dir = $(patsubst %/,%,$(dir $@))
1289 target-dir = $(dir $@)
1291 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1292 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1293 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1296 %.s: %.c prepare scripts FORCE
1297 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1298 %.i: %.c prepare scripts FORCE
1299 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1300 %.o: %.c prepare scripts FORCE
1301 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1302 %.lst: %.c prepare scripts FORCE
1303 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1304 %.s: %.S prepare scripts FORCE
1305 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1306 %.o: %.S prepare scripts FORCE
1307 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1310 / %/: prepare scripts FORCE
1311 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1312 $(build)=$(build-dir)
1313 %.ko: prepare scripts FORCE
1314 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1315 $(build)=$(build-dir) $(@:.ko=.o)
1316 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1318 # FIXME Should go into a make.lib or something
1319 # ===========================================================================
1321 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1322 cmd_rmdirs = rm -rf $(rm-dirs)
1324 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1325 cmd_rmfiles = rm -f $(rm-files)
1328 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
1329 $(NOSTDINC_FLAGS) $(CPPFLAGS) \
1330 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
1332 quiet_cmd_as_o_S = AS $@
1333 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1335 # read all saved command lines
1337 targets := $(wildcard $(sort $(targets)))
1338 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1340 ifneq ($(cmd_files),)
1341 $(cmd_files): ; # Do not try to update included dependency files
1342 include $(cmd_files)
1345 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1347 # $(Q)$(MAKE) $(clean)=dir
1348 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1350 endif # skip-makefile
1356 # Declare the contents of the .PHONY variable as phony. We keep that
1357 # information in a variable se we can use it in if_changed and friends.