6 NAME=Avast! A bilge rat!
9 # To see a list of typical targets execute "make help"
10 # More info can be located in ./README
11 # Comments in this file are targeted only to the developer, do not
12 # expect to learn how to build the kernel reading this file.
14 # Do not print "Entering directory ..."
15 MAKEFLAGS += --no-print-directory
17 # We are using a recursive build, so we need to do a little thinking
18 # to get the ordering right.
20 # Most importantly: sub-Makefiles should only ever modify files in
21 # their own directory. If in some directory we have a dependency on
22 # a file in another dir (which doesn't happen often, but it's often
23 # unavoidable when linking the built-in.o targets which finally
24 # turn into vmlinux), we will call a sub make in that other dir, and
25 # after that we are sure that everything which is in that other dir
28 # The only cases where we need to modify files which have global
29 # effects are thus separated out and done before the recursive
30 # descending is started. They are now explicitly listed as the
33 # To put more focus on warnings, be less verbose as default
34 # Use 'make V=1' to see the full commands
37 ifeq ("$(origin V)", "command line")
45 # Call a source code checker (by default, "sparse") as part of the
48 # Use 'make C=1' to enable checking of only re-compiled files.
49 # Use 'make C=2' to enable checking of *all* source files, regardless
50 # of whether they are re-compiled or not.
52 # See the file "Documentation/sparse.txt" for more details, including
53 # where to get the "sparse" utility.
56 ifeq ("$(origin C)", "command line")
57 KBUILD_CHECKSRC = $(C)
60 ifndef KBUILD_CHECKSRC
64 # Use make M=dir to specify directory of external module to build
65 # Old syntax make ... SUBDIRS=$PWD is still supported
66 # Setting the environment variable KBUILD_EXTMOD take precedence
68 KBUILD_EXTMOD ?= $(SUBDIRS)
71 ifeq ("$(origin M)", "command line")
77 # kbuild supports saving output files in a separate directory.
78 # To locate output files in a separate directory two syntaxes are supported.
79 # In both cases the working directory must be the root of the kernel src.
81 # Use "make O=dir/to/store/output/files/"
83 # 2) Set KBUILD_OUTPUT
84 # Set the environment variable KBUILD_OUTPUT to point to the directory
85 # where the output files shall be placed.
86 # export KBUILD_OUTPUT=dir/to/store/output/files/
89 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
93 # KBUILD_SRC is set on invocation of make in OBJ directory
94 # KBUILD_SRC is not intended to be used by the regular user (for now)
97 # OK, Make called in directory where kernel src resides
98 # Do we want to locate output files in a separate directory?
100 ifeq ("$(origin O)", "command line")
101 KBUILD_OUTPUT := $(O)
105 # That's our default target when none is given on the command line
109 ifneq ($(KBUILD_OUTPUT),)
110 # Invoke a second make in the output directory, passing relevant variables
111 # check that the output directory actually exists
112 saved-output := $(KBUILD_OUTPUT)
113 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
114 $(if $(KBUILD_OUTPUT),, \
115 $(error output directory "$(saved-output)" does not exist))
117 PHONY += $(MAKECMDGOALS)
119 $(filter-out _all,$(MAKECMDGOALS)) _all:
120 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
121 KBUILD_SRC=$(CURDIR) \
122 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
124 # Leave processing to above invocation of make
126 endif # ifneq ($(KBUILD_OUTPUT),)
127 endif # ifeq ($(KBUILD_SRC),)
129 # We process the rest of the Makefile if this is the final invocation of make
130 ifeq ($(skip-makefile),)
132 # If building an external module we do not care about the all: rule
133 # but instead _all depend on modules
135 ifeq ($(KBUILD_EXTMOD),)
141 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
143 # FIXME - TOPDIR is obsolete, use srctree/objtree
148 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
150 export srctree objtree VPATH TOPDIR
153 # SUBARCH tells the usermode build what the underlying arch is. That is set
154 # first, and if a usermode build is happening, the "ARCH=um" on the command
155 # line overrides the setting of ARCH below. If a native build is happening,
156 # then ARCH is assigned, getting whatever value it gets normally, and
157 # SUBARCH is subsequently ignored.
159 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
160 -e s/arm.*/arm/ -e s/sa110/arm/ \
161 -e s/s390x/s390/ -e s/parisc64/parisc/ \
162 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
164 # Cross compiling and selecting different set of gcc/bin-utils
165 # ---------------------------------------------------------------------------
167 # When performing cross compilation for other architectures ARCH shall be set
168 # to the target architecture. (See arch/* for the possibilities).
169 # ARCH can be set during invocation of make:
171 # Another way is to have ARCH set in the environment.
172 # The default ARCH is the host where make is executed.
174 # CROSS_COMPILE specify the prefix used for all executables used
175 # during compilation. Only gcc and related bin-utils executables
176 # are prefixed with $(CROSS_COMPILE).
177 # CROSS_COMPILE can be set on the command line
178 # make CROSS_COMPILE=ia64-linux-
179 # Alternatively CROSS_COMPILE can be set in the environment.
180 # Default value for CROSS_COMPILE is not to prefix executables
181 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
186 # Architecture as present in compile.h
187 UTS_MACHINE := $(ARCH)
189 KCONFIG_CONFIG ?= .config
191 # SHELL used by kbuild
192 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
193 else if [ -x /bin/bash ]; then echo /bin/bash; \
194 else echo sh; fi ; fi)
198 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
201 # Decide whether to build built-in, modular, or both.
202 # Normally, just do built-in.
207 # If we have only "make modules", don't compile built-in objects.
208 # When we're building modules with modversions, we need to consider
209 # the built-in objects during the descend as well, in order to
210 # make sure the checksums are up to date before we record them.
212 ifeq ($(MAKECMDGOALS),modules)
213 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
216 # If we have "make <whatever> modules", compile modules
217 # in addition to whatever we do anyway.
218 # Just "make" or "make all" shall build modules as well
220 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
224 ifeq ($(MAKECMDGOALS),)
228 export KBUILD_MODULES KBUILD_BUILTIN
229 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
232 # ---------------------------------------------------------------------------
234 # Normally, we echo the whole command before executing it. By making
235 # that echo $($(quiet)$(cmd)), we now have the possibility to set
236 # $(quiet) to choose other forms of output instead, e.g.
238 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
239 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
241 # If $(quiet) is empty, the whole command will be printed.
242 # If it is set to "quiet_", only the short version will be printed.
243 # If it is set to "silent_", nothing will be printed at all, since
244 # the variable $(silent_cmd_cc_o_c) doesn't exist.
246 # A simple variant is to prefix commands with $(Q) - that's useful
247 # for commands that shall be hidden in non-verbose mode.
251 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
252 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
254 ifeq ($(KBUILD_VERBOSE),1)
262 # If the user is running make -s (silent mode), suppress echoing of
265 ifneq ($(findstring s,$(MAKEFLAGS)),)
269 export quiet Q KBUILD_VERBOSE
272 # Look for make include files relative to root of kernel src
273 MAKEFLAGS += --include-dir=$(srctree)
275 # We need some generic definitions
276 include $(srctree)/scripts/Kbuild.include
278 # Do not use make's built-in rules and variables
279 # This increases performance and avoid hard-to-debug behavour
282 # Make variables (CC, etc...)
284 AS = $(CROSS_COMPILE)as
285 LD = $(CROSS_COMPILE)ld
286 CC = $(CROSS_COMPILE)gcc
288 AR = $(CROSS_COMPILE)ar
289 NM = $(CROSS_COMPILE)nm
290 STRIP = $(CROSS_COMPILE)strip
291 OBJCOPY = $(CROSS_COMPILE)objcopy
292 OBJDUMP = $(CROSS_COMPILE)objdump
294 GENKSYMS = scripts/genksyms/genksyms
295 DEPMOD = /sbin/depmod
296 KALLSYMS = scripts/kallsyms
300 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
302 CFLAGS_MODULE = $(MODFLAGS)
303 AFLAGS_MODULE = $(MODFLAGS)
309 # Use LINUXINCLUDE when you must reference the include/ directory.
310 # Needed to be compatible with the O= option
311 LINUXINCLUDE := -Iinclude \
312 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
313 -include include/linux/autoconf.h
315 CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
317 CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
318 -fno-strict-aliasing -fno-common
319 AFLAGS := -D__ASSEMBLY__
321 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
322 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
323 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
325 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
326 export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
327 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
328 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
330 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
331 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
332 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
334 # When compiling out-of-tree modules, put MODVERDIR in the module
335 # tree rather than in the kernel tree. The kernel tree might
337 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
339 # Files to ignore in find ... statements
341 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
342 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
344 # ===========================================================================
345 # Rules shared between *config targets and build targets
347 # Basic helpers built in scripts/
348 PHONY += scripts_basic
350 $(Q)$(MAKE) $(build)=scripts/basic
352 # To avoid any implicit rule to kick in, define an empty command.
353 scripts/basic/%: scripts_basic ;
355 PHONY += outputmakefile
356 # outputmakefile generates a Makefile in the output directory, if using a
357 # separate output directory. This allows convenient use of make in the
360 ifneq ($(KBUILD_SRC),)
361 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
362 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
365 # To make sure we do not include .config for any of the *config targets
366 # catch them early, and hand them over to scripts/kconfig/Makefile
367 # It is allowed to specify more targets when calling make, including
368 # mixing *config targets and build targets.
369 # For example 'make oldconfig all'.
370 # Detect when mixed targets is specified, and make a second invocation
371 # of make so .config is not included in this case either (for *config).
373 no-dot-config-targets := clean mrproper distclean \
374 cscope TAGS tags help %docs check% \
375 include/linux/version.h headers_% \
376 kernelrelease kernelversion
382 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
383 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
388 ifeq ($(KBUILD_EXTMOD),)
389 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
391 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
397 ifeq ($(mixed-targets),1)
398 # ===========================================================================
399 # We're called with mixed targets (*config and build targets).
400 # Handle them one by one.
403 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
406 ifeq ($(config-targets),1)
407 # ===========================================================================
408 # *config targets only - make sure prerequisites are updated, and descend
409 # in scripts/kconfig to make the *config target
411 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
412 # KBUILD_DEFCONFIG may point out an alternative default configuration
413 # used for 'make defconfig'
414 include $(srctree)/arch/$(ARCH)/Makefile
415 export KBUILD_DEFCONFIG
417 config %config: scripts_basic outputmakefile FORCE
418 $(Q)mkdir -p include/linux include/config
419 $(Q)$(MAKE) $(build)=scripts/kconfig $@
422 # ===========================================================================
423 # Build targets only - this includes vmlinux, arch specific targets, clean
424 # targets and others. In general all targets except *config targets.
426 ifeq ($(KBUILD_EXTMOD),)
427 # Additional helpers built in scripts/
428 # Carefully list dependencies so we do not try to build scripts twice
431 scripts: scripts_basic include/config/auto.conf
432 $(Q)$(MAKE) $(build)=$(@)
434 # Objects we will link into vmlinux / subdirs we need to visit
436 drivers-y := drivers/ sound/
440 endif # KBUILD_EXTMOD
442 ifeq ($(dot-config),1)
444 -include include/config/auto.conf
446 ifeq ($(KBUILD_EXTMOD),)
447 # Read in dependencies to all Kconfig* files, make sure to run
448 # oldconfig if changes are detected.
449 -include include/config/auto.conf.cmd
451 # To avoid any implicit rule to kick in, define an empty command
452 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
454 # If .config is newer than include/config/auto.conf, someone tinkered
455 # with it and forgot to run make oldconfig.
456 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
457 # we execute the config step to be sure to catch updated Kconfig files
458 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
459 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
461 # external modules needs include/linux/autoconf.h and include/config/auto.conf
462 # but do not care if they are up-to-date. Use auto.conf to trigger the test
463 PHONY += include/config/auto.conf
465 include/config/auto.conf:
466 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \
468 echo " ERROR: Kernel configuration is invalid."; \
469 echo " include/linux/autoconf.h or $@ are missing."; \
470 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
474 endif # KBUILD_EXTMOD
477 # Dummy target needed, because used as prerequisite
478 include/config/auto.conf: ;
479 endif # $(dot-config)
481 # The all: target is the default when no target is given on the
483 # This allow a user to issue only 'make' to build a kernel including modules
484 # Defaults vmlinux but it is usually overridden in the arch makefile
487 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
493 include $(srctree)/arch/$(ARCH)/Makefile
495 ifdef CONFIG_FRAME_POINTER
496 CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
498 CFLAGS += -fomit-frame-pointer
501 ifdef CONFIG_UNWIND_INFO
502 CFLAGS += -fasynchronous-unwind-tables
503 LDFLAGS_vmlinux += --eh-frame-hdr
506 ifdef CONFIG_DEBUG_INFO
510 # Force gcc to behave correct even for buggy distributions
511 CFLAGS += $(call cc-option, -fno-stack-protector)
513 # arch Makefile may override CC so keep this after arch Makefile is included
514 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
515 CHECKFLAGS += $(NOSTDINC_FLAGS)
517 # warn about C99 declaration after statement
518 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
520 # disable pointer signed / unsigned warnings in gcc 4.0
521 CFLAGS += $(call cc-option,-Wno-pointer-sign,)
523 # Default kernel image to build when no specific target is given.
524 # KBUILD_IMAGE may be overruled on the command line or
525 # set in the environment
526 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
528 export KBUILD_IMAGE ?= vmlinux
531 # INSTALL_PATH specifies where to place the updated kernel and system map
532 # images. Default is /boot, but you can set it to other values
533 export INSTALL_PATH ?= /boot
536 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
537 # relocations required by build roots. This is not defined in the
538 # makefile but the argument can be passed to make if needed.
541 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
545 # INSTALL_MOD_STRIP, if defined, will cause modules to be
546 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
547 # the default option --strip-debug will be used. Otherwise,
548 # INSTALL_MOD_STRIP will used as the options to the strip command.
550 ifdef INSTALL_MOD_STRIP
551 ifeq ($(INSTALL_MOD_STRIP),1)
552 mod_strip_cmd = $(STRIP) --strip-debug
554 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
555 endif # INSTALL_MOD_STRIP=1
558 endif # INSTALL_MOD_STRIP
562 ifeq ($(KBUILD_EXTMOD),)
563 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
565 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
566 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
567 $(net-y) $(net-m) $(libs-y) $(libs-m) $(EXTRA_MODULE_DIRS)))
569 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
571 $(core-n) $(core-) $(drivers-n) $(drivers-) \
572 $(net-n) $(net-) $(libs-n) $(libs-) $(EXTRA_MODULE_DIRS))))
574 init-y := $(patsubst %/, %/built-in.o, $(init-y))
575 core-y := $(patsubst %/, %/built-in.o, $(core-y))
576 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
577 net-y := $(patsubst %/, %/built-in.o, $(net-y))
578 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
579 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
580 libs-y := $(libs-y1) $(libs-y2)
583 # ---------------------------------------------------------------------------
584 # vmlinux is built from the objects selected by $(vmlinux-init) and
585 # $(vmlinux-main). Most are built-in.o files from top-level directories
586 # in the kernel tree, others are specified in arch/$(ARCH)Makefile.
587 # Ordering when linking is important, and $(vmlinux-init) must be first.
592 # +-< $(vmlinux-init)
593 # | +--< init/version.o + more
595 # +--< $(vmlinux-main)
596 # | +--< driver/built-in.o mm/built-in.o + more
598 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
600 # vmlinux version (uname -v) cannot be updated during normal
601 # descending-into-subdirs phase since we do not yet know if we need to
603 # Therefore this step is delayed until just before final link of vmlinux -
604 # except in the kallsyms case where it is done just before adding the
605 # symbols to the kernel.
607 # System.map is generated to document addresses of all kernel symbols
609 vmlinux-init := $(head-y) $(init-y)
610 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
611 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
612 vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds
614 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
615 # May be overridden by arch/$(ARCH)/Makefile
616 quiet_cmd_vmlinux__ ?= LD $@
617 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
618 -T $(vmlinux-lds) $(vmlinux-init) \
619 --start-group $(vmlinux-main) --end-group \
620 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
622 # Generate new vmlinux version
623 quiet_cmd_vmlinux_version = GEN .version
624 cmd_vmlinux_version = set -e; \
625 if [ ! -r .version ]; then \
629 mv .version .old_version; \
630 expr 0$$(cat .old_version) + 1 >.version; \
632 $(MAKE) $(build)=init
634 # Generate System.map
635 quiet_cmd_sysmap = SYSMAP
636 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
639 # If CONFIG_KALLSYMS is set .version is already updated
640 # Generate System.map and verify that the content is consistent
641 # Use + in front of the vmlinux_version rule to silent warning with make -j2
642 # First command is ':' to allow us to use + in front of the rule
643 define rule_vmlinux__
645 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
647 $(call cmd,vmlinux__)
648 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
650 $(Q)$(if $($(quiet)cmd_sysmap), \
651 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
652 $(cmd_sysmap) $@ System.map; \
653 if [ $$? -ne 0 ]; then \
661 ifdef CONFIG_KALLSYMS
662 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
663 # It's a three stage process:
664 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
666 # Running kallsyms on that gives us .tmp_kallsyms1.o with
667 # the right size - vmlinux version (uname -v) is updated during this step
668 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
669 # but due to the added section, some addresses have shifted.
670 # From here, we generate a correct .tmp_kallsyms2.o
671 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
672 # o Verify that the System.map from vmlinux matches the map from
673 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
674 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
675 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
676 # temporary bypass to allow the kernel to be built while the
677 # maintainers work out what went wrong with kallsyms.
679 ifdef CONFIG_KALLSYMS_EXTRA_PASS
685 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
687 define verify_kallsyms
688 $(Q)$(if $($(quiet)cmd_sysmap), \
689 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
690 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
691 $(Q)cmp -s System.map .tmp_System.map || \
692 (echo Inconsistent kallsyms data; \
693 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
694 rm .tmp_kallsyms* ; /bin/false )
697 # Update vmlinux version before link
698 # Use + in front of this rule to silent warning about make -j1
699 # First command is ':' to allow us to use + in front of this rule
700 cmd_ksym_ld = $(cmd_vmlinux__)
703 +$(call cmd,vmlinux_version)
704 $(call cmd,vmlinux__)
705 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
708 # Generate .S file with all kernel symbols
709 quiet_cmd_kallsyms = KSYM $@
710 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
711 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
713 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
714 $(call if_changed_dep,as_o_S)
716 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
719 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
720 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
721 $(call if_changed_rule,ksym_ld)
723 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
724 $(call if_changed,vmlinux__)
726 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
727 $(call if_changed,vmlinux__)
729 # Needs to visit scripts/ before $(KALLSYMS) can be used.
730 $(KALLSYMS): scripts ;
732 # Generate some data for debugging strange kallsyms problems
733 debug_kallsyms: .tmp_map$(last_kallsyms)
735 .tmp_map%: .tmp_vmlinux% FORCE
736 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
742 endif # ifdef CONFIG_KALLSYMS
744 # vmlinux image - including updated kernel symbols
745 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
746 ifdef CONFIG_HEADERS_CHECK
747 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
749 $(call if_changed_rule,vmlinux__)
750 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
751 $(Q)rm -f .old_version
753 # The actual objects are generated when descending,
754 # make sure no implicit rule kicks in
755 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
757 # Handle descending into subdirectories listed in $(vmlinux-dirs)
758 # Preset locale variables to speed up the build process. Limit locale
759 # tweaks to this spot to avoid wrong language settings when running
760 # make menuconfig etc.
761 # Error messages still appears in the original language
763 PHONY += $(vmlinux-dirs)
764 $(vmlinux-dirs): prepare scripts
765 $(Q)$(MAKE) $(build)=$@
767 # Build the kernel release string
769 # The KERNELRELEASE value built here is stored in the file
770 # include/config/kernel.release, and is used when executing several
771 # make targets, such as "make install" or "make modules_install."
773 # The eventual kernel release string consists of the following fields,
774 # shown in a hierarchical format to show how smaller parts are concatenated
775 # to form the larger and final value, with values coming from places like
776 # the Makefile, kernel config options, make command line options and/or
777 # SCM tag information.
781 # $(PATCHLEVEL) eg, 6
783 # $(EXTRAVERSION) eg, -rc6
786 # localversion* (all localversion* files)
787 # $(CONFIG_LOCALVERSION) (from kernel config setting)
788 # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set)
789 # ./scripts/setlocalversion (SCM tag, if one exists)
790 # $(LOCALVERSION) (from make command line if provided)
792 # Note how the final $(localver-auto) string is included *only* if the
793 # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the
794 # moment, only git is supported but other SCMs can edit the script
795 # scripts/setlocalversion and add the appropriate checks as needed.
798 space := $(nullstring) # end of line
800 ___localver = $(objtree)/localversion* $(srctree)/localversion*
801 __localver = $(sort $(wildcard $(___localver)))
802 # skip backup files (containing '~')
803 _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
805 localver = $(subst $(space),, \
806 $(shell cat /dev/null $(_localver)) \
807 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
809 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
810 # and if the SCM is know a tag from the SCM is appended.
811 # The appended tag is determined by the SCM used.
813 # Currently, only git is supported.
814 # Other SCMs can edit scripts/setlocalversion and add the appropriate
816 ifdef CONFIG_LOCALVERSION_AUTO
817 _localver-auto = $(shell $(CONFIG_SHELL) \
818 $(srctree)/scripts/setlocalversion $(srctree))
819 localver-auto = $(LOCALVERSION)$(_localver-auto)
822 localver-full = $(localver)$(localver-auto)
824 # Store (new) KERNELRELASE string in include/config/kernel.release
825 kernelrelease = $(KERNELVERSION)$(localver-full)
826 include/config/kernel.release: include/config/auto.conf FORCE
828 $(Q)echo $(kernelrelease) > $@
831 # Things we need to do before we recursively start building the kernel
832 # or the modules are listed in "prepare".
833 # A multi level approach is used. prepareN is processed before prepareN-1.
834 # archprepare is used in arch Makefiles and when processed asm symlink,
835 # version.h and scripts_basic is processed / created.
837 # Listed in dependency order
838 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
840 # prepare-all is deprecated, use prepare as valid replacement
843 # prepare3 is used to check if we are building in a separate output directory,
845 # 1) Check that make has not been executed in the kernel src $(srctree)
846 # 2) Create the include2 directory, used for the second asm symlink
847 prepare3: include/config/kernel.release
848 ifneq ($(KBUILD_SRC),)
849 @echo ' Using $(srctree) as source for kernel'
850 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
851 echo " $(srctree) is not clean, please run 'make mrproper'";\
852 echo " in the '$(srctree)' directory.";\
855 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
856 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
859 # prepare2 creates a makefile if using a separate output directory
860 prepare2: prepare3 outputmakefile
862 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
863 include/asm include/config/auto.conf
864 ifneq ($(KBUILD_MODULES),)
865 $(Q)mkdir -p $(MODVERDIR)
866 $(Q)rm -f $(MODVERDIR)/*
869 archprepare: prepare1 scripts_basic
871 prepare0: archprepare FORCE
872 $(Q)$(MAKE) $(build)=.
874 # All the preparing..
875 prepare prepare-all: prepare0
877 # Leave this as default for preprocessing vmlinux.lds.S, which is now
878 # done in arch/$(ARCH)/kernel/Makefile
880 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
882 # FIXME: The asm symlink changes when $(ARCH) changes. That's
883 # hard to detect, but I suppose "make mrproper" is a good idea
884 # before switching between archs anyway.
887 @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
888 $(Q)if [ ! -d include ]; then mkdir -p include; fi;
889 @ln -fsn asm-$(ARCH) $@
891 # Generate some files
892 # ---------------------------------------------------------------------------
894 # KERNELRELEASE can change from a few different places, meaning version.h
895 # needs to be updated, so this check is forced on all builds
898 define filechk_utsrelease.h
899 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
900 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
903 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
906 define filechk_version.h
907 (echo \#define LINUX_VERSION_CODE $(shell \
908 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \
909 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
912 include/linux/version.h: $(srctree)/Makefile FORCE
913 $(call filechk,version.h)
915 include/linux/utsrelease.h: include/config/kernel.release FORCE
916 $(call filechk,utsrelease.h)
918 # ---------------------------------------------------------------------------
922 @echo '*** Warning: make $@ is unnecessary now.'
924 # ---------------------------------------------------------------------------
926 INSTALL_HDR_PATH=$(objtree)/usr
927 export INSTALL_HDR_PATH
929 HDRARCHES=$(filter-out generic,$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild)))
931 PHONY += headers_install_all
932 headers_install_all: include/linux/version.h scripts_basic FORCE
933 $(Q)$(MAKE) $(build)=scripts scripts/unifdef
934 $(Q)for arch in $(HDRARCHES); do \
935 $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch ;\
938 PHONY += headers_install
939 headers_install: include/linux/version.h scripts_basic FORCE
940 @if [ ! -r $(srctree)/include/asm-$(ARCH)/Kbuild ]; then \
941 echo '*** Error: Headers not exportable for this architecture ($(ARCH))'; \
943 $(Q)$(MAKE) $(build)=scripts scripts/unifdef
944 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include
946 PHONY += headers_check
947 headers_check: headers_install
948 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1
950 # ---------------------------------------------------------------------------
955 # By default, build modules as well
962 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
963 @echo ' Building modules, stage 2.';
964 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
967 # Target to prepare building external modules
968 PHONY += modules_prepare
969 modules_prepare: prepare scripts
971 # Target to install modules
972 PHONY += modules_install
973 modules_install: _modinst_ _modinst_post
977 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
978 echo "Warning: you may need to install module-init-tools"; \
979 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
982 @rm -rf $(MODLIB)/kernel
983 @rm -f $(MODLIB)/source
984 @mkdir -p $(MODLIB)/kernel
985 @ln -s $(srctree) $(MODLIB)/source
986 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
987 rm -f $(MODLIB)/build ; \
988 ln -s $(objtree) $(MODLIB)/build ; \
990 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
992 # If System.map exists, run depmod. This deliberately does not have a
993 # dependency on System.map since that would run the dependency tree on
994 # vmlinux. This depmod is only for convenience to give the initial
995 # boot a modules.dep even before / is mounted read-write. However the
996 # boot script depmod is the master version.
997 ifeq "$(strip $(INSTALL_MOD_PATH))" ""
1000 depmod_opts := -b $(INSTALL_MOD_PATH)/lib/modules -r
1002 PHONY += _modinst_post
1003 _modinst_post: _modinst_
1004 if [ -r System.map -a -x $(word 1, $(DEPMOD)) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
1006 else # CONFIG_MODULES
1008 # Modules not configured
1009 # ---------------------------------------------------------------------------
1011 modules modules_install: FORCE
1013 @echo "The present kernel configuration has modules disabled."
1014 @echo "Type 'make config' and enable loadable module support."
1015 @echo "Then build a kernel with module support enabled."
1019 endif # CONFIG_MODULES
1022 # Cleaning is done on three levels.
1023 # make clean Delete most generated files
1024 # Leave enough to build external modules
1025 # make mrproper Delete the current configuration, and all generated files
1026 # make distclean Remove editor backup files, patch leftover files and the like
1028 # Directories & files removed with 'make clean'
1029 CLEAN_DIRS += $(MODVERDIR)
1030 CLEAN_FILES += vmlinux System.map \
1031 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
1033 # Directories & files removed with 'make mrproper'
1034 MRPROPER_DIRS += include/config include2 usr/include
1035 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
1036 include/linux/autoconf.h include/linux/version.h \
1037 include/linux/utsrelease.h \
1038 Module.symvers tags TAGS cscope*
1040 # clean - Delete most, but leave enough to build external modules
1042 clean: rm-dirs := $(CLEAN_DIRS)
1043 clean: rm-files := $(CLEAN_FILES)
1044 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
1046 PHONY += $(clean-dirs) clean archclean
1048 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1050 clean: archclean $(clean-dirs)
1053 @find . $(RCS_FIND_IGNORE) \
1054 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1055 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1056 -o -name '*.symtypes' \) \
1057 -type f -print | xargs rm -f
1059 # mrproper - Delete all generated files, including .config
1061 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1062 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1063 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1065 PHONY += $(mrproper-dirs) mrproper archmrproper
1067 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1069 mrproper: clean archmrproper $(mrproper-dirs)
1078 @find $(srctree) $(RCS_FIND_IGNORE) \
1079 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1080 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1081 -o -name '.*.rej' -o -size 0 \
1082 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1083 -type f -print | xargs rm -f
1086 # Packaging of the kernel to various formats
1087 # ---------------------------------------------------------------------------
1088 # rpm target kept for backward compatibility
1089 package-dir := $(srctree)/scripts/package
1091 %pkg: include/config/kernel.release FORCE
1092 $(Q)$(MAKE) $(build)=$(package-dir) $@
1093 rpm: include/config/kernel.release FORCE
1094 $(Q)$(MAKE) $(build)=$(package-dir) $@
1097 # Brief documentation of the typical targets used
1098 # ---------------------------------------------------------------------------
1100 boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
1101 boards := $(notdir $(boards))
1104 @echo 'Cleaning targets:'
1105 @echo ' clean - remove most generated files but keep the config and'
1106 @echo ' enough build support to build external modules'
1107 @echo ' mrproper - remove all generated files + config + various backup files'
1108 @echo ' distclean - mrproper + remove editor backup and patch files'
1110 @echo 'Configuration targets:'
1111 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1113 @echo 'Other generic targets:'
1114 @echo ' all - Build all targets marked with [*]'
1115 @echo '* vmlinux - Build the bare kernel'
1116 @echo '* modules - Build all modules'
1117 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1118 @echo ' dir/ - Build all files in dir and below'
1119 @echo ' dir/file.[ois] - Build specified target only'
1120 @echo ' dir/file.ko - Build module including final link'
1121 @echo ' rpm - Build a kernel as an RPM package'
1122 @echo ' tags/TAGS - Generate tags file for editors'
1123 @echo ' cscope - Generate cscope index'
1124 @echo ' kernelrelease - Output the release version string'
1125 @echo ' kernelversion - Output the version stored in Makefile'
1126 @if [ -r include/asm-$(ARCH)/Kbuild ]; then \
1127 echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1129 @echo ' (default: $(INSTALL_HDR_PATH))'
1131 @echo 'Static analysers'
1132 @echo ' checkstack - Generate a list of stack hogs'
1133 @echo ' namespacecheck - Name space analysis on compiled kernel'
1134 @if [ -r include/asm-$(ARCH)/Kbuild ]; then \
1135 echo ' headers_check - Sanity check on exported headers'; \
1138 @echo 'Kernel packaging:'
1139 @$(MAKE) $(build)=$(package-dir) help
1141 @echo 'Documentation targets:'
1142 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1144 @echo 'Architecture specific targets ($(ARCH)):'
1145 @$(if $(archhelp),$(archhelp),\
1146 echo ' No architecture specific help defined for $(ARCH)')
1149 $(foreach b, $(boards), \
1150 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1153 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1154 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1155 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1156 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1157 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1159 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1160 @echo 'For further info see the ./README file'
1163 # Documentation targets
1164 # ---------------------------------------------------------------------------
1165 %docs: scripts_basic FORCE
1166 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1168 else # KBUILD_EXTMOD
1171 # External module support.
1172 # When building external modules the kernel used as basis is considered
1173 # read-only, and no consistency checks are made and the make
1174 # system is not used on the basis kernel. If updates are required
1175 # in the basis kernel ordinary make commands (without M=...) must
1178 # The following are the only valid targets when building external
1180 # make M=dir clean Delete all automatically generated files
1181 # make M=dir modules Make all modules in specified dir
1182 # make M=dir Same as 'make M=dir modules'
1183 # make M=dir modules_install
1184 # Install the modules built in the module directory
1185 # Assumes install directory is already created
1187 # We are always building modules
1189 PHONY += crmodverdir
1191 $(Q)mkdir -p $(MODVERDIR)
1192 $(Q)rm -f $(MODVERDIR)/*
1194 PHONY += $(objtree)/Module.symvers
1195 $(objtree)/Module.symvers:
1196 @test -e $(objtree)/Module.symvers || ( \
1198 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1199 echo " is missing; modules will have no dependencies and modversions."; \
1202 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1203 PHONY += $(module-dirs) modules
1204 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1205 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1207 modules: $(module-dirs)
1208 @echo ' Building modules, stage 2.';
1209 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1211 PHONY += modules_install
1212 modules_install: _emodinst_ _emodinst_post
1214 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1217 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1218 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1220 # Run depmod only is we have System.map and depmod is executable
1221 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1222 cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \
1223 $(DEPMOD) -ae -F System.map \
1224 $(if $(strip $(INSTALL_MOD_PATH)), \
1225 -b $(INSTALL_MOD_PATH) -r) \
1229 PHONY += _emodinst_post
1230 _emodinst_post: _emodinst_
1233 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1235 PHONY += $(clean-dirs) clean
1237 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1239 clean: rm-dirs := $(MODVERDIR)
1240 clean: $(clean-dirs)
1242 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1243 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1244 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1245 -type f -print | xargs rm -f
1248 @echo ' Building external modules.'
1249 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1251 @echo ' modules - default target, build the module(s)'
1252 @echo ' modules_install - install the module'
1253 @echo ' clean - remove generated files in module directory only'
1257 PHONY += prepare scripts
1260 endif # KBUILD_EXTMOD
1262 # Generate tags for editors
1263 # ---------------------------------------------------------------------------
1265 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
1266 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
1267 #Adding $(srctree) adds about 20M on i386 to the size of the output file!
1269 ifeq ($(src),$(obj))
1272 __srctree = $(srctree)/
1275 ifeq ($(ALLSOURCE_ARCHS),)
1277 ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
1279 ALLINCLUDE_ARCHS := $(ARCH)
1282 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour.
1283 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
1286 ALLSOURCE_ARCHS := $(ARCH)
1289 ( find $(__srctree) $(RCS_FIND_IGNORE) \
1290 \( -name include -o -name arch \) -prune -o \
1292 for ARCH in $(ALLSOURCE_ARCHS) ; do \
1293 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
1296 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
1298 find $(__srctree)include $(RCS_FIND_IGNORE) \
1299 \( -name config -o -name 'asm-*' \) -prune \
1300 -o -name $1 -print; \
1301 for ARCH in $(ALLINCLUDE_ARCHS) ; do \
1302 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
1305 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
1310 $(call find-sources,'*.[chS]')
1313 $(call find-sources,'Kconfig*')
1315 define all-defconfigs
1316 $(call find-sources,'defconfig')
1320 if $1 --version 2>&1 | grep -iq exuberant; then \
1321 $(all-sources) | xargs $1 -a \
1322 -I __initdata,__exitdata,__acquires,__releases \
1323 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1324 --extra=+f --c-kinds=+px \
1325 --regex-asm='/ENTRY\(([^)]*)\).*/\1/'; \
1326 $(all-kconfigs) | xargs $1 -a \
1328 --language-force=kconfig \
1329 --regex-kconfig='/^[[:blank:]]*config[[:blank:]]+([[:alnum:]_]+)/\1/'; \
1330 $(all-defconfigs) | xargs -r $1 -a \
1331 --langdef=dotconfig \
1332 --language-force=dotconfig \
1333 --regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'; \
1334 elif $1 --version 2>&1 | grep -iq emacs; then \
1335 $(all-sources) | xargs $1 -a; \
1336 $(all-kconfigs) | xargs $1 -a \
1337 --regex='/^[ \t]*config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
1338 $(all-defconfigs) | xargs -r $1 -a \
1339 --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
1341 $(all-sources) | xargs $1 -a; \
1345 quiet_cmd_cscope-file = FILELST cscope.files
1346 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
1348 quiet_cmd_cscope = MAKE cscope.out
1349 cmd_cscope = cscope -b
1352 $(call cmd,cscope-file)
1355 quiet_cmd_TAGS = MAKE $@
1364 quiet_cmd_tags = MAKE $@
1374 # Scripts to check various things for consistency
1375 # ---------------------------------------------------------------------------
1378 find * $(RCS_FIND_IGNORE) \
1379 -name '*.[hcS]' -type f -print | sort \
1380 | xargs $(PERL) -w scripts/checkincludes.pl
1383 find * $(RCS_FIND_IGNORE) \
1384 -name '*.[hcS]' -type f -print | sort \
1385 | xargs $(PERL) -w scripts/checkversion.pl
1388 $(PERL) $(srctree)/scripts/namespace.pl
1390 endif #ifeq ($(config-targets),1)
1391 endif #ifeq ($(mixed-targets),1)
1393 PHONY += checkstack kernelrelease kernelversion
1395 # Use $(SUBARCH) here instead of $(ARCH) so that this works for UML.
1396 # In the UML case, $(SUBARCH) is the name of the underlying
1397 # architecture, while for all other arches, it is the same as $(ARCH).
1399 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1400 $(PERL) $(src)/scripts/checkstack.pl $(SUBARCH)
1403 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
1404 $(error kernelrelease not valid - run 'make prepare' to update it))
1406 @echo $(KERNELVERSION)
1409 # ---------------------------------------------------------------------------
1410 # Single targets are compatible with:
1411 # - build whith mixed source and output
1412 # - build with separate output dir 'make O=...'
1413 # - external modules
1415 # target-dir => where to store outputfile
1416 # build-dir => directory in kernel source tree to use
1418 ifeq ($(KBUILD_EXTMOD),)
1419 build-dir = $(patsubst %/,%,$(dir $@))
1420 target-dir = $(dir $@)
1422 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1423 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1424 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1427 %.s: %.c prepare scripts FORCE
1428 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1429 %.i: %.c prepare scripts FORCE
1430 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1431 %.o: %.c prepare scripts FORCE
1432 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1433 %.lst: %.c prepare scripts FORCE
1434 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1435 %.s: %.S prepare scripts FORCE
1436 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1437 %.o: %.S prepare scripts FORCE
1438 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1439 %.symtypes: %.c prepare scripts FORCE
1440 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1443 / %/: prepare scripts FORCE
1444 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1445 $(build)=$(build-dir)
1446 %.ko: prepare scripts FORCE
1447 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1448 $(build)=$(build-dir) $(@:.ko=.o)
1449 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1451 # FIXME Should go into a make.lib or something
1452 # ===========================================================================
1454 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1455 cmd_rmdirs = rm -rf $(rm-dirs)
1457 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1458 cmd_rmfiles = rm -f $(rm-files)
1461 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
1462 $(NOSTDINC_FLAGS) $(CPPFLAGS) \
1463 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
1465 quiet_cmd_as_o_S = AS $@
1466 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1468 # read all saved command lines
1470 targets := $(wildcard $(sort $(targets)))
1471 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1473 ifneq ($(cmd_files),)
1474 $(cmd_files): ; # Do not try to update included dependency files
1475 include $(cmd_files)
1478 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1480 # $(Q)$(MAKE) $(clean)=dir
1481 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1483 endif # skip-makefile
1489 # Declare the contents of the .PHONY variable as phony. We keep that
1490 # information in a variable se we can use it in if_changed and friends.