5 NAME=Sliding Snow Leopard
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) cdbuilddir
110 $(MAKECMDGOALS) _all: cdbuilddir
113 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
114 KBUILD_SRC=$(CURDIR) \
115 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $(MAKECMDGOALS)
117 # Leave processing to above invocation of make
119 endif # ifneq ($(KBUILD_OUTPUT),)
120 endif # ifeq ($(KBUILD_SRC),)
122 # We process the rest of the Makefile if this is the final invocation of make
123 ifeq ($(skip-makefile),)
125 # If building an external module we do not care about the all: rule
126 # but instead _all depend on modules
128 ifeq ($(KBUILD_EXTMOD),)
134 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
136 # FIXME - TOPDIR is obsolete, use srctree/objtree
143 export srctree objtree VPATH TOPDIR
146 # SUBARCH tells the usermode build what the underlying arch is. That is set
147 # first, and if a usermode build is happening, the "ARCH=um" on the command
148 # line overrides the setting of ARCH below. If a native build is happening,
149 # then ARCH is assigned, getting whatever value it gets normally, and
150 # SUBARCH is subsequently ignored.
152 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
153 -e s/arm.*/arm/ -e s/sa110/arm/ \
154 -e s/s390x/s390/ -e s/parisc64/parisc/ \
155 -e s/ppc.*/powerpc/ )
157 # Cross compiling and selecting different set of gcc/bin-utils
158 # ---------------------------------------------------------------------------
160 # When performing cross compilation for other architectures ARCH shall be set
161 # to the target architecture. (See arch/* for the possibilities).
162 # ARCH can be set during invocation of make:
164 # Another way is to have ARCH set in the environment.
165 # The default ARCH is the host where make is executed.
167 # CROSS_COMPILE specify the prefix used for all executables used
168 # during compilation. Only gcc and related bin-utils executables
169 # are prefixed with $(CROSS_COMPILE).
170 # CROSS_COMPILE can be set on the command line
171 # make CROSS_COMPILE=ia64-linux-
172 # Alternatively CROSS_COMPILE can be set in the environment.
173 # Default value for CROSS_COMPILE is not to prefix executables
174 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
179 # Architecture as present in compile.h
180 UTS_MACHINE := $(ARCH)
182 # SHELL used by kbuild
183 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
184 else if [ -x /bin/bash ]; then echo /bin/bash; \
185 else echo sh; fi ; fi)
189 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
192 # Decide whether to build built-in, modular, or both.
193 # Normally, just do built-in.
198 # If we have only "make modules", don't compile built-in objects.
199 # When we're building modules with modversions, we need to consider
200 # the built-in objects during the descend as well, in order to
201 # make sure the checksums are uptodate before we record them.
203 ifeq ($(MAKECMDGOALS),modules)
204 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
207 # If we have "make <whatever> modules", compile modules
208 # in addition to whatever we do anyway.
209 # Just "make" or "make all" shall build modules as well
211 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
215 ifeq ($(MAKECMDGOALS),)
219 export KBUILD_MODULES KBUILD_BUILTIN
220 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
223 # ---------------------------------------------------------------------------
225 # Normally, we echo the whole command before executing it. By making
226 # that echo $($(quiet)$(cmd)), we now have the possibility to set
227 # $(quiet) to choose other forms of output instead, e.g.
229 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
230 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
232 # If $(quiet) is empty, the whole command will be printed.
233 # If it is set to "quiet_", only the short version will be printed.
234 # If it is set to "silent_", nothing wil be printed at all, since
235 # the variable $(silent_cmd_cc_o_c) doesn't exist.
237 # A simple variant is to prefix commands with $(Q) - that's useful
238 # for commands that shall be hidden in non-verbose mode.
242 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
243 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
245 ifeq ($(KBUILD_VERBOSE),1)
253 # If the user is running make -s (silent mode), suppress echoing of
256 ifneq ($(findstring s,$(MAKEFLAGS)),)
260 export quiet Q KBUILD_VERBOSE
263 # cc support functions to be used (only) in arch/$(ARCH)/Makefile
264 # See documentation in Documentation/kbuild/makefiles.txt
267 # Usage: cflags-y += $(call as-option, -Wa$(comma)-isa=foo,)
269 as-option = $(shell if $(CC) $(CFLAGS) $(1) -Wa,-Z -c -o /dev/null \
270 -xassembler /dev/null > /dev/null 2>&1; then echo "$(1)"; \
271 else echo "$(2)"; fi ;)
274 # Usage: cflags-y += $(call cc-option, -march=winchip-c6, -march=i586)
276 cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
277 > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
280 # Usage: flag := $(call cc-option-yn, -march=winchip-c6)
281 cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
282 > /dev/null 2>&1; then echo "y"; else echo "n"; fi;)
285 # Prefix align with either -falign or -malign
286 cc-option-align = $(subst -functions=0,,\
287 $(call cc-option,-falign-functions=0,-malign-functions=0))
290 # Usage gcc-ver := $(call cc-version $(CC))
291 cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \
292 $(if $(1), $(1), $(CC)))
295 # Look for make include files relative to root of kernel src
296 MAKEFLAGS += --include-dir=$(srctree)
298 # We need some generic definitions
299 include $(srctree)/scripts/Kbuild.include
301 # For maximum performance (+ possibly random breakage, uncomment
306 # Make variables (CC, etc...)
308 AS = $(CROSS_COMPILE)as
309 LD = $(CROSS_COMPILE)ld
310 CC = $(CROSS_COMPILE)gcc
312 AR = $(CROSS_COMPILE)ar
313 NM = $(CROSS_COMPILE)nm
314 STRIP = $(CROSS_COMPILE)strip
315 OBJCOPY = $(CROSS_COMPILE)objcopy
316 OBJDUMP = $(CROSS_COMPILE)objdump
318 GENKSYMS = scripts/genksyms/genksyms
319 DEPMOD = /sbin/depmod
320 KALLSYMS = scripts/kallsyms
324 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
326 CFLAGS_MODULE = $(MODFLAGS)
327 AFLAGS_MODULE = $(MODFLAGS)
333 # Use LINUXINCLUDE when you must reference the include/ directory.
334 # Needed to be compatible with the O= option
335 LINUXINCLUDE := -Iinclude \
336 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
337 -include include/linux/autoconf.h
339 CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
341 CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
342 -fno-strict-aliasing -fno-common \
344 AFLAGS := -D__ASSEMBLY__
346 # Read KERNELRELEASE from .kernelrelease (if it exists)
347 KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null)
348 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
350 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \
351 ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
352 CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
353 HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
355 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
356 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
357 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
359 # When compiling out-of-tree modules, put MODVERDIR in the module
360 # tree rather than in the kernel tree. The kernel tree might
362 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
364 # Files to ignore in find ... statements
366 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
367 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
369 # ===========================================================================
370 # Rules shared between *config targets and build targets
372 # Basic helpers built in scripts/
373 .PHONY: scripts_basic
375 $(Q)$(MAKE) $(build)=scripts/basic
377 # To avoid any implicit rule to kick in, define an empty command.
378 scripts/basic/%: scripts_basic ;
380 .PHONY: outputmakefile
381 # outputmakefile generate a Makefile to be placed in output directory, if
382 # using a seperate output directory. This allows convinient use
383 # of make in output directory
385 $(Q)if test ! $(srctree) -ef $(objtree); then \
386 $(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
387 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) \
388 > $(objtree)/Makefile; \
389 echo ' GEN $(objtree)/Makefile'; \
392 # To make sure we do not include .config for any of the *config targets
393 # catch them early, and hand them over to scripts/kconfig/Makefile
394 # It is allowed to specify more targets when calling make, including
395 # mixing *config targets and build targets.
396 # For example 'make oldconfig all'.
397 # Detect when mixed targets is specified, and make a second invocation
398 # of make so .config is not included in this case either (for *config).
400 no-dot-config-targets := clean mrproper distclean \
401 cscope TAGS tags help %docs check%
407 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
408 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
413 ifeq ($(KBUILD_EXTMOD),)
414 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
416 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
422 ifeq ($(mixed-targets),1)
423 # ===========================================================================
424 # We're called with mixed targets (*config and build targets).
425 # Handle them one by one.
428 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
431 ifeq ($(config-targets),1)
432 # ===========================================================================
433 # *config targets only - make sure prerequisites are updated, and descend
434 # in scripts/kconfig to make the *config target
436 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
437 # KBUILD_DEFCONFIG may point out an alternative default configuration
438 # used for 'make defconfig'
439 include $(srctree)/arch/$(ARCH)/Makefile
440 export KBUILD_DEFCONFIG
442 config %config: scripts_basic outputmakefile FORCE
443 $(Q)mkdir -p include/linux
444 $(Q)$(MAKE) $(build)=scripts/kconfig $@
445 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
448 # ===========================================================================
449 # Build targets only - this includes vmlinux, arch specific targets, clean
450 # targets and others. In general all targets except *config targets.
452 ifeq ($(KBUILD_EXTMOD),)
453 # Additional helpers built in scripts/
454 # Carefully list dependencies so we do not try to build scripts twice
457 scripts: scripts_basic include/config/MARKER
458 $(Q)$(MAKE) $(build)=$(@)
460 scripts_basic: include/linux/autoconf.h
462 # Objects we will link into vmlinux / subdirs we need to visit
464 drivers-y := drivers/ sound/
468 endif # KBUILD_EXTMOD
470 ifeq ($(dot-config),1)
471 # In this section, we need .config
473 # Read in dependencies to all Kconfig* files, make sure to run
474 # oldconfig if changes are detected.
479 # If .config needs to be updated, it will be done via the dependency
480 # that autoconf has on .config.
481 # To avoid any implicit rule to kick in, define an empty command
482 .config .kconfig.d: ;
484 # If .config is newer than include/linux/autoconf.h, someone tinkered
485 # with it and forgot to run make oldconfig.
486 # If kconfig.d is missing then we are probarly in a cleaned tree so
487 # we execute the config step to be sure to catch updated Kconfig files
488 include/linux/autoconf.h: .kconfig.d .config
489 $(Q)mkdir -p include/linux
490 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
492 # Dummy target needed, because used as prerequisite
493 include/linux/autoconf.h: ;
496 # The all: target is the default when no target is given on the
498 # This allow a user to issue only 'make' to build a kernel including modules
499 # Defaults vmlinux but it is usually overriden in the arch makefile
502 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
508 #Add align options if CONFIG_CC_* is not equal to 0
509 add-align = $(if $(filter-out 0,$($(1))),$(cc-option-align)$(2)=$($(1)))
510 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_FUNCTIONS,-functions)
511 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LABELS,-labels)
512 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
513 CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
515 ifdef CONFIG_FRAME_POINTER
516 CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
518 CFLAGS += -fomit-frame-pointer
521 ifdef CONFIG_DEBUG_INFO
525 include $(srctree)/arch/$(ARCH)/Makefile
527 # arch Makefile may override CC so keep this after arch Makefile is included
528 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
529 CHECKFLAGS += $(NOSTDINC_FLAGS)
531 # warn about C99 declaration after statement
532 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
534 # disable pointer signedness warnings in gcc 4.0
535 CFLAGS += $(call cc-option,-Wno-pointer-sign,)
537 # Default kernel image to build when no specific target is given.
538 # KBUILD_IMAGE may be overruled on the commandline or
539 # set in the environment
540 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
542 export KBUILD_IMAGE ?= vmlinux
545 # INSTALL_PATH specifies where to place the updated kernel and system map
546 # images. Default is /boot, but you can set it to other values
547 export INSTALL_PATH ?= /boot
550 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
551 # relocations required by build roots. This is not defined in the
552 # makefile but the arguement can be passed to make if needed.
555 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
559 ifeq ($(KBUILD_EXTMOD),)
560 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
562 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
563 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
564 $(net-y) $(net-m) $(libs-y) $(libs-m)))
566 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
568 $(core-n) $(core-) $(drivers-n) $(drivers-) \
569 $(net-n) $(net-) $(libs-n) $(libs-))))
571 init-y := $(patsubst %/, %/built-in.o, $(init-y))
572 core-y := $(patsubst %/, %/built-in.o, $(core-y))
573 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
574 net-y := $(patsubst %/, %/built-in.o, $(net-y))
575 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
576 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
577 libs-y := $(libs-y1) $(libs-y2)
580 # ---------------------------------------------------------------------------
581 # vmlinux is build from the objects selected by $(vmlinux-init) and
582 # $(vmlinux-main). Most are built-in.o files from top-level directories
583 # in the kernel tree, others are specified in arch/$(ARCH)Makefile.
584 # Ordering when linking is important, and $(vmlinux-init) must be first.
589 # +-< $(vmlinux-init)
590 # | +--< init/version.o + more
592 # +--< $(vmlinux-main)
593 # | +--< driver/built-in.o mm/built-in.o + more
595 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
597 # vmlinux version (uname -v) cannot be updated during normal
598 # descending-into-subdirs phase since we do not yet know if we need to
600 # Therefore this step is delayed until just before final link of vmlinux -
601 # except in the kallsyms case where it is done just before adding the
602 # symbols to the kernel.
604 # System.map is generated to document addresses of all kernel symbols
606 vmlinux-init := $(head-y) $(init-y)
607 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
608 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
609 vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds
611 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
612 # May be overridden by arch/$(ARCH)/Makefile
613 quiet_cmd_vmlinux__ ?= LD $@
614 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
615 -T $(vmlinux-lds) $(vmlinux-init) \
616 --start-group $(vmlinux-main) --end-group \
617 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
619 # Generate new vmlinux version
620 quiet_cmd_vmlinux_version = GEN .version
621 cmd_vmlinux_version = set -e; \
622 if [ ! -r .version ]; then \
626 mv .version .old_version; \
627 expr 0$$(cat .old_version) + 1 >.version; \
629 $(MAKE) $(build)=init
631 # Generate System.map
632 quiet_cmd_sysmap = SYSMAP
633 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
636 # If CONFIG_KALLSYMS is set .version is already updated
637 # Generate System.map and verify that the content is consistent
638 # Use + in front of the vmlinux_version rule to silent warning with make -j2
639 # First command is ':' to allow us to use + in front of the rule
640 define rule_vmlinux__
642 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
644 $(call cmd,vmlinux__)
645 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
647 $(Q)$(if $($(quiet)cmd_sysmap), \
648 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
649 $(cmd_sysmap) $@ System.map; \
650 if [ $$? -ne 0 ]; then \
658 ifdef CONFIG_KALLSYMS
659 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
660 # It's a three stage process:
661 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
663 # Running kallsyms on that gives us .tmp_kallsyms1.o with
664 # the right size - vmlinux version (uname -v) is updated during this step
665 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
666 # but due to the added section, some addresses have shifted.
667 # From here, we generate a correct .tmp_kallsyms2.o
668 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
669 # o Verify that the System.map from vmlinux matches the map from
670 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
671 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
672 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
673 # temporary bypass to allow the kernel to be built while the
674 # maintainers work out what went wrong with kallsyms.
676 ifdef CONFIG_KALLSYMS_EXTRA_PASS
682 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
684 define verify_kallsyms
685 $(Q)$(if $($(quiet)cmd_sysmap), \
686 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
687 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
688 $(Q)cmp -s System.map .tmp_System.map || \
689 (echo Inconsistent kallsyms data; \
690 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
691 rm .tmp_kallsyms* ; /bin/false )
694 # Update vmlinux version before link
695 # Use + in front of this rule to silent warning about make -j1
696 # First command is ':' to allow us to use + in front of this rule
697 cmd_ksym_ld = $(cmd_vmlinux__)
700 +$(call cmd,vmlinux_version)
701 $(call cmd,vmlinux__)
702 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
705 # Generate .S file with all kernel symbols
706 quiet_cmd_kallsyms = KSYM $@
707 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
708 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
710 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
711 $(call if_changed_dep,as_o_S)
713 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
716 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
717 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
718 $(call if_changed_rule,ksym_ld)
720 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
721 $(call if_changed,vmlinux__)
723 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
724 $(call if_changed,vmlinux__)
726 # Needs to visit scripts/ before $(KALLSYMS) can be used.
727 $(KALLSYMS): scripts ;
729 # Generate some data for debugging strange kallsyms problems
730 debug_kallsyms: .tmp_map$(last_kallsyms)
732 .tmp_map%: .tmp_vmlinux% FORCE
733 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
739 endif # ifdef CONFIG_KALLSYMS
741 # vmlinux image - including updated kernel symbols
742 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
743 $(call if_changed_rule,vmlinux__)
744 $(Q)rm -f .old_version
746 # The actual objects are generated when descending,
747 # make sure no implicit rule kicks in
748 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
750 # Handle descending into subdirectories listed in $(vmlinux-dirs)
751 # Preset locale variables to speed up the build process. Limit locale
752 # tweaks to this spot to avoid wrong language settings when running
753 # make menuconfig etc.
754 # Error messages still appears in the original language
756 .PHONY: $(vmlinux-dirs)
757 $(vmlinux-dirs): prepare scripts
758 $(Q)$(MAKE) $(build)=$@
760 # Build the kernel release string
761 # The KERNELRELEASE is stored in a file named .kernelrelease
762 # to be used when executing for example make install or make modules_install
764 # Take the contents of any files called localversion* and the config
765 # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
766 # LOCALVERSION from the command line override all of this
769 space := $(nullstring) # end of line
771 ___localver = $(objtree)/localversion* $(srctree)/localversion*
772 __localver = $(sort $(wildcard $(___localver)))
773 # skip backup files (containing '~')
774 _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
776 localver = $(subst $(space),, \
777 $(shell cat /dev/null $(_localver)) \
778 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
780 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
781 # and if the SCM is know a tag from the SCM is appended.
782 # The appended tag is determinded by the SCM used.
784 # Currently, only git is supported.
785 # Other SCMs can edit scripts/setlocalversion and add the appropriate
787 ifdef CONFIG_LOCALVERSION_AUTO
788 _localver-auto = $(shell $(CONFIG_SHELL) \
789 $(srctree)/scripts/setlocalversion $(srctree))
790 localver-auto = $(LOCALVERSION)$(_localver-auto)
793 localver-full = $(localver)$(localver-auto)
795 # Store (new) KERNELRELASE string in .kernelrelease
796 kernelrelease = $(KERNELVERSION)$(localver-full)
797 .kernelrelease: FORCE
799 $(Q)echo $(kernelrelease) > $@
802 # Things we need to do before we recursively start building the kernel
803 # or the modules are listed in "prepare".
804 # A multi level approach is used. prepareN is processed before prepareN-1.
805 # archprepare is used in arch Makefiles and when processed asm symlink,
806 # version.h and scripts_basic is processed / created.
808 # Listed in dependency order
809 .PHONY: prepare archprepare prepare0 prepare1 prepare2 prepare3
811 # prepare-all is deprecated, use prepare as valid replacement
814 # prepare3 is used to check if we are building in a separate output directory,
816 # 1) Check that make has not been executed in the kernel src $(srctree)
817 # 2) Create the include2 directory, used for the second asm symlink
818 prepare3: .kernelrelease
819 ifneq ($(KBUILD_SRC),)
820 @echo ' Using $(srctree) as source for kernel'
821 $(Q)if [ -f $(srctree)/.config ]; then \
822 echo " $(srctree) is not clean, please run 'make mrproper'";\
823 echo " in the '$(srctree)' directory.";\
826 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
827 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
830 # prepare2 creates a makefile if using a separate output directory
831 prepare2: prepare3 outputmakefile
833 prepare1: prepare2 include/linux/version.h include/asm \
834 include/config/MARKER
835 ifneq ($(KBUILD_MODULES),)
836 $(Q)rm -rf $(MODVERDIR)
837 $(Q)mkdir -p $(MODVERDIR)
840 archprepare: prepare1 scripts_basic
842 prepare0: archprepare FORCE
843 $(Q)$(MAKE) $(build)=.
845 # All the preparing..
846 prepare prepare-all: prepare0
848 # Leave this as default for preprocessing vmlinux.lds.S, which is now
849 # done in arch/$(ARCH)/kernel/Makefile
851 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
854 # ---------------------------------------------------------------------------
856 %.s: %.c scripts FORCE
857 $(Q)$(MAKE) $(build)=$(@D) $@
858 %.i: %.c scripts FORCE
859 $(Q)$(MAKE) $(build)=$(@D) $@
860 %.o: %.c scripts FORCE
861 $(Q)$(MAKE) $(build)=$(@D) $@
863 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@D) $(@:.ko=.o)
864 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
865 %/: scripts prepare FORCE
866 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@D)
867 %.lst: %.c scripts FORCE
868 $(Q)$(MAKE) $(build)=$(@D) $@
869 %.s: %.S scripts FORCE
870 $(Q)$(MAKE) $(build)=$(@D) $@
871 %.o: %.S scripts FORCE
872 $(Q)$(MAKE) $(build)=$(@D) $@
874 # FIXME: The asm symlink changes when $(ARCH) changes. That's
875 # hard to detect, but I suppose "make mrproper" is a good idea
876 # before switching between archs anyway.
879 @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
880 $(Q)if [ ! -d include ]; then mkdir -p include; fi;
881 @ln -fsn asm-$(ARCH) $@
883 # Split autoconf.h into include/linux/config/*
885 include/config/MARKER: scripts/basic/split-include include/linux/autoconf.h
886 @echo ' SPLIT include/linux/autoconf.h -> include/config/*'
887 @scripts/basic/split-include include/linux/autoconf.h include/config
890 # Generate some files
891 # ---------------------------------------------------------------------------
893 # KERNELRELEASE can change from a few different places, meaning version.h
894 # needs to be updated, so this check is forced on all builds
898 define filechk_version.h
899 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
900 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
903 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
904 echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \
905 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \
909 include/linux/version.h: $(srctree)/Makefile .config FORCE
910 $(call filechk,version.h)
912 # ---------------------------------------------------------------------------
916 @echo '*** Warning: make $@ is unnecessary now.'
918 # ---------------------------------------------------------------------------
923 # By default, build modules as well
930 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
931 @echo ' Building modules, stage 2.';
932 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
935 # Target to prepare building external modules
936 .PHONY: modules_prepare
937 modules_prepare: prepare scripts
939 # Target to install modules
940 .PHONY: modules_install
941 modules_install: _modinst_ _modinst_post
945 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
946 echo "Warning: you may need to install module-init-tools"; \
947 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
950 @rm -rf $(MODLIB)/kernel
951 @rm -f $(MODLIB)/source
952 @mkdir -p $(MODLIB)/kernel
953 @ln -s $(srctree) $(MODLIB)/source
954 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
955 rm -f $(MODLIB)/build ; \
956 ln -s $(objtree) $(MODLIB)/build ; \
958 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
960 # If System.map exists, run depmod. This deliberately does not have a
961 # dependency on System.map since that would run the dependency tree on
962 # vmlinux. This depmod is only for convenience to give the initial
963 # boot a modules.dep even before / is mounted read-write. However the
964 # boot script depmod is the master version.
965 ifeq "$(strip $(INSTALL_MOD_PATH))" ""
968 depmod_opts := -b $(INSTALL_MOD_PATH) -r
970 .PHONY: _modinst_post
971 _modinst_post: _modinst_
972 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
974 else # CONFIG_MODULES
976 # Modules not configured
977 # ---------------------------------------------------------------------------
979 modules modules_install: FORCE
981 @echo "The present kernel configuration has modules disabled."
982 @echo "Type 'make config' and enable loadable module support."
983 @echo "Then build a kernel with module support enabled."
987 endif # CONFIG_MODULES
990 # Cleaning is done on three levels.
991 # make clean Delete most generated files
992 # Leave enough to build external modules
993 # make mrproper Delete the current configuration, and all generated files
994 # make distclean Remove editor backup files, patch leftover files and the like
996 # Directories & files removed with 'make clean'
997 CLEAN_DIRS += $(MODVERDIR)
998 CLEAN_FILES += vmlinux System.map \
999 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
1001 # Directories & files removed with 'make mrproper'
1002 MRPROPER_DIRS += include/config include2
1003 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
1004 include/linux/autoconf.h include/linux/version.h \
1005 .kernelrelease Module.symvers tags TAGS cscope*
1007 # clean - Delete most, but leave enough to build external modules
1009 clean: rm-dirs := $(CLEAN_DIRS)
1010 clean: rm-files := $(CLEAN_FILES)
1011 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
1013 .PHONY: $(clean-dirs) clean archclean
1015 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1017 clean: archclean $(clean-dirs)
1020 @find . $(RCS_FIND_IGNORE) \
1021 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1022 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1023 -type f -print | xargs rm -f
1025 # mrproper - Delete all generated files, including .config
1027 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1028 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1029 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1031 .PHONY: $(mrproper-dirs) mrproper archmrproper
1033 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1035 mrproper: clean archmrproper $(mrproper-dirs)
1044 @find $(srctree) $(RCS_FIND_IGNORE) \
1045 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1046 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1047 -o -name '.*.rej' -o -size 0 \
1048 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1049 -type f -print | xargs rm -f
1052 # Packaging of the kernel to various formats
1053 # ---------------------------------------------------------------------------
1054 # rpm target kept for backward compatibility
1055 package-dir := $(srctree)/scripts/package
1060 $(Q)$(MAKE) -f $(package-dir)/Makefile $@
1062 $(Q)$(MAKE) -f $(package-dir)/Makefile $@
1065 # Brief documentation of the typical targets used
1066 # ---------------------------------------------------------------------------
1068 boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
1069 boards := $(notdir $(boards))
1072 @echo 'Cleaning targets:'
1073 @echo ' clean - remove most generated files but keep the config'
1074 @echo ' mrproper - remove all generated files + config + various backup files'
1076 @echo 'Configuration targets:'
1077 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1079 @echo 'Other generic targets:'
1080 @echo ' all - Build all targets marked with [*]'
1081 @echo '* vmlinux - Build the bare kernel'
1082 @echo '* modules - Build all modules'
1083 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1084 @echo ' dir/ - Build all files in dir and below'
1085 @echo ' dir/file.[ois] - Build specified target only'
1086 @echo ' dir/file.ko - Build module including final link'
1087 @echo ' rpm - Build a kernel as an RPM package'
1088 @echo ' tags/TAGS - Generate tags file for editors'
1089 @echo ' cscope - Generate cscope index'
1090 @echo ' kernelrelease - Output the release version string'
1091 @echo ' kernelversion - Output the version stored in Makefile'
1093 @echo 'Static analysers'
1094 @echo ' buildcheck - List dangling references to vmlinux discarded sections'
1095 @echo ' and init sections from non-init sections'
1096 @echo ' checkstack - Generate a list of stack hogs'
1097 @echo ' namespacecheck - Name space analysis on compiled kernel'
1099 @echo 'Kernel packaging:'
1100 @$(MAKE) -f $(package-dir)/Makefile help
1102 @echo 'Documentation targets:'
1103 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1105 @echo 'Architecture specific targets ($(ARCH)):'
1106 @$(if $(archhelp),$(archhelp),\
1107 echo ' No architecture specific help defined for $(ARCH)')
1110 $(foreach b, $(boards), \
1111 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1114 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1115 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1116 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse)'
1117 @echo ' make C=2 [targets] Force check of all c source with $$CHECK (sparse)'
1119 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1120 @echo 'For further info see the ./README file'
1123 # Documentation targets
1124 # ---------------------------------------------------------------------------
1125 %docs: scripts_basic FORCE
1126 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1128 else # KBUILD_EXTMOD
1131 # External module support.
1132 # When building external modules the kernel used as basis is considered
1133 # read-only, and no consistency checks are made and the make
1134 # system is not used on the basis kernel. If updates are required
1135 # in the basis kernel ordinary make commands (without M=...) must
1138 # The following are the only valid targets when building external
1140 # make M=dir clean Delete all automatically generated files
1141 # make M=dir modules Make all modules in specified dir
1142 # make M=dir Same as 'make M=dir modules'
1143 # make M=dir modules_install
1144 # Install the modules build in the module directory
1145 # Assumes install directory is already created
1147 # We are always building modules
1151 $(Q)mkdir -p $(MODVERDIR)
1153 .PHONY: $(objtree)/Module.symvers
1154 $(objtree)/Module.symvers:
1155 @test -e $(objtree)/Module.symvers || ( \
1157 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1158 echo " is missing; modules will have no dependencies and modversions."; \
1161 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1162 .PHONY: $(module-dirs) modules
1163 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1164 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1166 modules: $(module-dirs)
1167 @echo ' Building modules, stage 2.';
1168 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1170 .PHONY: modules_install
1172 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
1174 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1176 .PHONY: $(clean-dirs) clean
1178 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1180 clean: rm-dirs := $(MODVERDIR)
1181 clean: $(clean-dirs)
1183 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1184 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1185 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1186 -type f -print | xargs rm -f
1189 @echo ' Building external modules.'
1190 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1192 @echo ' modules - default target, build the module(s)'
1193 @echo ' modules_install - install the module'
1194 @echo ' clean - remove generated files in module directory only'
1196 endif # KBUILD_EXTMOD
1198 # Generate tags for editors
1199 # ---------------------------------------------------------------------------
1201 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
1202 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
1203 #Adding $(srctree) adds about 20M on i386 to the size of the output file!
1205 ifeq ($(src),$(obj))
1208 __srctree = $(srctree)/
1211 ifeq ($(ALLSOURCE_ARCHS),)
1213 ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
1215 ALLINCLUDE_ARCHS := $(ARCH)
1218 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.
1219 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
1222 ALLSOURCE_ARCHS := $(ARCH)
1225 ( find $(__srctree) $(RCS_FIND_IGNORE) \
1226 \( -name include -o -name arch \) -prune -o \
1227 -name '*.[chS]' -print; \
1228 for ARCH in $(ALLSOURCE_ARCHS) ; do \
1229 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
1230 -name '*.[chS]' -print; \
1232 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
1233 -name '*.[chS]' -print; \
1234 find $(__srctree)include $(RCS_FIND_IGNORE) \
1235 \( -name config -o -name 'asm-*' \) -prune \
1236 -o -name '*.[chS]' -print; \
1237 for ARCH in $(ALLINCLUDE_ARCHS) ; do \
1238 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
1239 -name '*.[chS]' -print; \
1241 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
1242 -name '*.[chS]' -print )
1245 quiet_cmd_cscope-file = FILELST cscope.files
1246 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
1248 quiet_cmd_cscope = MAKE cscope.out
1249 cmd_cscope = cscope -b
1252 $(call cmd,cscope-file)
1255 quiet_cmd_TAGS = MAKE $@
1258 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
1259 echo "-I __initdata,__exitdata,__acquires,__releases \
1260 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1261 --extra=+f --c-kinds=+px"`; \
1262 $(all-sources) | xargs etags $$ETAGSF -a
1269 quiet_cmd_tags = MAKE $@
1272 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
1273 echo "-I __initdata,__exitdata,__acquires,__releases \
1274 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1275 --extra=+f --c-kinds=+px"`; \
1276 $(all-sources) | xargs ctags $$CTAGSF -a
1283 # Scripts to check various things for consistency
1284 # ---------------------------------------------------------------------------
1287 find * $(RCS_FIND_IGNORE) \
1288 -name '*.[hcS]' -type f -print | sort \
1289 | xargs $(PERL) -w scripts/checkincludes.pl
1292 find * $(RCS_FIND_IGNORE) \
1293 -name '*.[hcS]' -type f -print | sort \
1294 | xargs $(PERL) -w scripts/checkversion.pl
1297 $(PERL) $(srctree)/scripts/reference_discarded.pl
1298 $(PERL) $(srctree)/scripts/reference_init.pl
1301 $(PERL) $(srctree)/scripts/namespace.pl
1303 endif #ifeq ($(config-targets),1)
1304 endif #ifeq ($(mixed-targets),1)
1308 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1309 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1312 $(if $(wildcard .kernelrelease), $(Q)echo $(KERNELRELEASE), \
1313 $(error kernelrelease not valid - run 'make *config' to update it))
1315 @echo $(KERNELVERSION)
1317 # FIXME Should go into a make.lib or something
1318 # ===========================================================================
1320 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1321 cmd_rmdirs = rm -rf $(rm-dirs)
1323 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1324 cmd_rmfiles = rm -f $(rm-files)
1327 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
1328 $(NOSTDINC_FLAGS) $(CPPFLAGS) \
1329 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
1331 quiet_cmd_as_o_S = AS $@
1332 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1334 # read all saved command lines
1336 targets := $(wildcard $(sort $(targets)))
1337 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1339 ifneq ($(cmd_files),)
1340 $(cmd_files): ; # Do not try to update included dependency files
1341 include $(cmd_files)
1344 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1346 # $(Q)$(MAKE) $(clean)=dir
1347 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1349 endif # skip-makefile