5 NAME=Avast! A bilge rat!
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 checker as part of compilation of C files
48 # Use 'make C=1' to enable checking (sparse, by default)
49 # Override with 'make C=1 CHECK=checker_executable CHECKFLAGS=....'
52 ifeq ("$(origin C)", "command line")
53 KBUILD_CHECKSRC = $(C)
56 ifndef KBUILD_CHECKSRC
60 # Use make M=dir to specify directory of external module to build
61 # Old syntax make ... SUBDIRS=$PWD is still supported
62 # Setting the environment variable KBUILD_EXTMOD take precedence
64 KBUILD_EXTMOD ?= $(SUBDIRS)
67 ifeq ("$(origin M)", "command line")
73 # kbuild supports saving output files in a separate directory.
74 # To locate output files in a separate directory two syntaxes are supported.
75 # In both cases the working directory must be the root of the kernel src.
77 # Use "make O=dir/to/store/output/files/"
79 # 2) Set KBUILD_OUTPUT
80 # Set the environment variable KBUILD_OUTPUT to point to the directory
81 # where the output files shall be placed.
82 # export KBUILD_OUTPUT=dir/to/store/output/files/
85 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
89 # KBUILD_SRC is set on invocation of make in OBJ directory
90 # KBUILD_SRC is not intended to be used by the regular user (for now)
93 # OK, Make called in directory where kernel src resides
94 # Do we want to locate output files in a separate directory?
96 ifeq ("$(origin O)", "command line")
101 # That's our default target when none is given on the command line
105 ifneq ($(KBUILD_OUTPUT),)
106 # Invoke a second make in the output directory, passing relevant variables
107 # check that the output directory actually exists
108 saved-output := $(KBUILD_OUTPUT)
109 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
110 $(if $(KBUILD_OUTPUT),, \
111 $(error output directory "$(saved-output)" does not exist))
113 PHONY += $(MAKECMDGOALS)
115 $(filter-out _all,$(MAKECMDGOALS)) _all:
116 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
117 KBUILD_SRC=$(CURDIR) \
118 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
120 # Leave processing to above invocation of make
122 endif # ifneq ($(KBUILD_OUTPUT),)
123 endif # ifeq ($(KBUILD_SRC),)
125 # We process the rest of the Makefile if this is the final invocation of make
126 ifeq ($(skip-makefile),)
128 # If building an external module we do not care about the all: rule
129 # but instead _all depend on modules
131 ifeq ($(KBUILD_EXTMOD),)
137 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
139 # FIXME - TOPDIR is obsolete, use srctree/objtree
144 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
146 export srctree objtree VPATH TOPDIR
149 # SUBARCH tells the usermode build what the underlying arch is. That is set
150 # first, and if a usermode build is happening, the "ARCH=um" on the command
151 # line overrides the setting of ARCH below. If a native build is happening,
152 # then ARCH is assigned, getting whatever value it gets normally, and
153 # SUBARCH is subsequently ignored.
155 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
156 -e s/arm.*/arm/ -e s/sa110/arm/ \
157 -e s/s390x/s390/ -e s/parisc64/parisc/ \
158 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
161 # Cross compiling and selecting different set of gcc/bin-utils
162 # ---------------------------------------------------------------------------
164 # When performing cross compilation for other architectures ARCH shall be set
165 # to the target architecture. (See arch/* for the possibilities).
166 # ARCH can be set during invocation of make:
168 # Another way is to have ARCH set in the environment.
169 # The default ARCH is the host where make is executed.
171 # CROSS_COMPILE specify the prefix used for all executables used
172 # during compilation. Only gcc and related bin-utils executables
173 # are prefixed with $(CROSS_COMPILE).
174 # CROSS_COMPILE can be set on the command line
175 # make CROSS_COMPILE=ia64-linux-
176 # Alternatively CROSS_COMPILE can be set in the environment.
177 # Default value for CROSS_COMPILE is not to prefix executables
178 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
181 CROSS_COMPILE ?= arm-linux-
183 # Architecture as present in compile.h
184 UTS_MACHINE := $(ARCH)
186 KCONFIG_CONFIG ?= .config
188 # SHELL used by kbuild
189 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
190 else if [ -x /bin/bash ]; then echo /bin/bash; \
191 else echo sh; fi ; fi)
195 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
198 # Decide whether to build built-in, modular, or both.
199 # Normally, just do built-in.
204 # If we have only "make modules", don't compile built-in objects.
205 # When we're building modules with modversions, we need to consider
206 # the built-in objects during the descend as well, in order to
207 # make sure the checksums are up to date before we record them.
209 ifeq ($(MAKECMDGOALS),modules)
210 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
213 # If we have "make <whatever> modules", compile modules
214 # in addition to whatever we do anyway.
215 # Just "make" or "make all" shall build modules as well
217 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
221 ifeq ($(MAKECMDGOALS),)
225 export KBUILD_MODULES KBUILD_BUILTIN
226 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
229 # ---------------------------------------------------------------------------
231 # Normally, we echo the whole command before executing it. By making
232 # that echo $($(quiet)$(cmd)), we now have the possibility to set
233 # $(quiet) to choose other forms of output instead, e.g.
235 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
236 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
238 # If $(quiet) is empty, the whole command will be printed.
239 # If it is set to "quiet_", only the short version will be printed.
240 # If it is set to "silent_", nothing will be printed at all, since
241 # the variable $(silent_cmd_cc_o_c) doesn't exist.
243 # A simple variant is to prefix commands with $(Q) - that's useful
244 # for commands that shall be hidden in non-verbose mode.
248 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
249 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
251 ifeq ($(KBUILD_VERBOSE),1)
259 # If the user is running make -s (silent mode), suppress echoing of
262 ifneq ($(findstring s,$(MAKEFLAGS)),)
266 export quiet Q KBUILD_VERBOSE
269 # Look for make include files relative to root of kernel src
270 MAKEFLAGS += --include-dir=$(srctree)
272 # We need some generic definitions
273 include $(srctree)/scripts/Kbuild.include
275 # Do not use make's built-in rules and variables
276 # This increases performance and avoid hard-to-debug behavour
279 # Make variables (CC, etc...)
281 AS = $(CROSS_COMPILE)as
282 LD = $(CROSS_COMPILE)ld
283 CC = $(CROSS_COMPILE)gcc
285 AR = $(CROSS_COMPILE)ar
286 NM = $(CROSS_COMPILE)nm
287 STRIP = $(CROSS_COMPILE)strip
288 OBJCOPY = $(CROSS_COMPILE)objcopy
289 OBJDUMP = $(CROSS_COMPILE)objdump
291 GENKSYMS = scripts/genksyms/genksyms
292 DEPMOD = /sbin/depmod
293 KALLSYMS = scripts/kallsyms
297 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
299 CFLAGS_MODULE = $(MODFLAGS)
300 AFLAGS_MODULE = $(MODFLAGS)
306 # Use LINUXINCLUDE when you must reference the include/ directory.
307 # Needed to be compatible with the O= option
308 LINUXINCLUDE := -Iinclude \
309 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
310 -include include/linux/autoconf.h
312 CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
314 CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
315 -fno-strict-aliasing -fno-common
316 AFLAGS := -D__ASSEMBLY__
318 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
319 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
320 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
322 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
323 export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
324 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
325 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
327 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
328 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
329 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
331 # When compiling out-of-tree modules, put MODVERDIR in the module
332 # tree rather than in the kernel tree. The kernel tree might
334 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
336 # Files to ignore in find ... statements
338 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
339 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
341 # ===========================================================================
342 # Rules shared between *config targets and build targets
344 # Basic helpers built in scripts/
345 PHONY += scripts_basic
347 $(Q)$(MAKE) $(build)=scripts/basic
349 # To avoid any implicit rule to kick in, define an empty command.
350 scripts/basic/%: scripts_basic ;
352 PHONY += outputmakefile
353 # outputmakefile generates a Makefile in the output directory, if using a
354 # separate output directory. This allows convenient use of make in the
357 ifneq ($(KBUILD_SRC),)
358 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
359 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
362 # To make sure we do not include .config for any of the *config targets
363 # catch them early, and hand them over to scripts/kconfig/Makefile
364 # It is allowed to specify more targets when calling make, including
365 # mixing *config targets and build targets.
366 # For example 'make oldconfig all'.
367 # Detect when mixed targets is specified, and make a second invocation
368 # of make so .config is not included in this case either (for *config).
370 no-dot-config-targets := clean mrproper distclean \
371 cscope TAGS tags help %docs check% \
372 include/linux/version.h headers_% \
373 kernelrelease kernelversion
379 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
380 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
385 ifeq ($(KBUILD_EXTMOD),)
386 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
388 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
394 ifeq ($(mixed-targets),1)
395 # ===========================================================================
396 # We're called with mixed targets (*config and build targets).
397 # Handle them one by one.
400 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
403 ifeq ($(config-targets),1)
404 # ===========================================================================
405 # *config targets only - make sure prerequisites are updated, and descend
406 # in scripts/kconfig to make the *config target
408 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
409 # KBUILD_DEFCONFIG may point out an alternative default configuration
410 # used for 'make defconfig'
411 include $(srctree)/arch/$(ARCH)/Makefile
412 export KBUILD_DEFCONFIG
414 config %config: scripts_basic outputmakefile FORCE
415 $(Q)mkdir -p include/linux include/config
416 $(Q)$(MAKE) $(build)=scripts/kconfig $@
419 # ===========================================================================
420 # Build targets only - this includes vmlinux, arch specific targets, clean
421 # targets and others. In general all targets except *config targets.
423 ifeq ($(KBUILD_EXTMOD),)
424 # Additional helpers built in scripts/
425 # Carefully list dependencies so we do not try to build scripts twice
428 scripts: scripts_basic include/config/auto.conf
429 $(Q)$(MAKE) $(build)=$(@)
431 # Objects we will link into vmlinux / subdirs we need to visit
433 drivers-y := drivers/ sound/
437 endif # KBUILD_EXTMOD
439 ifeq ($(dot-config),1)
441 -include include/config/auto.conf
443 ifeq ($(KBUILD_EXTMOD),)
444 # Read in dependencies to all Kconfig* files, make sure to run
445 # oldconfig if changes are detected.
446 -include include/config/auto.conf.cmd
448 # To avoid any implicit rule to kick in, define an empty command
449 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
451 # If .config is newer than include/config/auto.conf, someone tinkered
452 # with it and forgot to run make oldconfig.
453 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
454 # we execute the config step to be sure to catch updated Kconfig files
455 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
456 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
458 # external modules needs include/linux/autoconf.h and include/config/auto.conf
459 # but do not care if they are up-to-date. Use auto.conf to trigger the test
460 PHONY += include/config/auto.conf
462 include/config/auto.conf:
463 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \
465 echo " ERROR: Kernel configuration is invalid."; \
466 echo " include/linux/autoconf.h or $@ are missing."; \
467 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
471 endif # KBUILD_EXTMOD
474 # Dummy target needed, because used as prerequisite
475 include/config/auto.conf: ;
476 endif # $(dot-config)
478 # The all: target is the default when no target is given on the
480 # This allow a user to issue only 'make' to build a kernel including modules
481 # Defaults vmlinux but it is usually overridden in the arch makefile
484 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
490 include $(srctree)/arch/$(ARCH)/Makefile
492 ifdef CONFIG_FRAME_POINTER
493 CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
495 CFLAGS += -fomit-frame-pointer
498 ifdef CONFIG_UNWIND_INFO
499 CFLAGS += -fasynchronous-unwind-tables
502 ifdef CONFIG_DEBUG_INFO
506 # Force gcc to behave correct even for buggy distributions
507 CFLAGS += $(call cc-option, -fno-stack-protector)
509 # arch Makefile may override CC so keep this after arch Makefile is included
510 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
511 CHECKFLAGS += $(NOSTDINC_FLAGS)
513 # warn about C99 declaration after statement
514 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
516 # disable pointer signed / unsigned warnings in gcc 4.0
517 CFLAGS += $(call cc-option,-Wno-pointer-sign,)
519 # Default kernel image to build when no specific target is given.
520 # KBUILD_IMAGE may be overruled on the command line or
521 # set in the environment
522 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
524 export KBUILD_IMAGE ?= vmlinux
527 # INSTALL_PATH specifies where to place the updated kernel and system map
528 # images. Default is /boot, but you can set it to other values
529 export INSTALL_PATH ?= /boot
532 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
533 # relocations required by build roots. This is not defined in the
534 # makefile but the argument can be passed to make if needed.
537 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
541 # INSTALL_MOD_STRIP, if defined, will cause modules to be
542 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
543 # the default option --strip-debug will be used. Otherwise,
544 # INSTALL_MOD_STRIP will used as the options to the strip command.
546 ifdef INSTALL_MOD_STRIP
547 ifeq ($(INSTALL_MOD_STRIP),1)
548 mod_strip_cmd = $(STRIP) --strip-debug
550 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
551 endif # INSTALL_MOD_STRIP=1
554 endif # INSTALL_MOD_STRIP
558 ifeq ($(KBUILD_EXTMOD),)
559 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
561 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
562 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
563 $(net-y) $(net-m) $(libs-y) $(libs-m)))
565 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
567 $(core-n) $(core-) $(drivers-n) $(drivers-) \
568 $(net-n) $(net-) $(libs-n) $(libs-))))
570 init-y := $(patsubst %/, %/built-in.o, $(init-y))
571 core-y := $(patsubst %/, %/built-in.o, $(core-y))
572 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
573 net-y := $(patsubst %/, %/built-in.o, $(net-y))
574 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
575 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
576 libs-y := $(libs-y1) $(libs-y2)
579 # ---------------------------------------------------------------------------
580 # vmlinux is built from the objects selected by $(vmlinux-init) and
581 # $(vmlinux-main). Most are built-in.o files from top-level directories
582 # in the kernel tree, others are specified in arch/$(ARCH)Makefile.
583 # Ordering when linking is important, and $(vmlinux-init) must be first.
588 # +-< $(vmlinux-init)
589 # | +--< init/version.o + more
591 # +--< $(vmlinux-main)
592 # | +--< driver/built-in.o mm/built-in.o + more
594 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
596 # vmlinux version (uname -v) cannot be updated during normal
597 # descending-into-subdirs phase since we do not yet know if we need to
599 # Therefore this step is delayed until just before final link of vmlinux -
600 # except in the kallsyms case where it is done just before adding the
601 # symbols to the kernel.
603 # System.map is generated to document addresses of all kernel symbols
605 vmlinux-init := $(head-y) $(init-y)
606 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
607 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
608 vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds
610 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
611 # May be overridden by arch/$(ARCH)/Makefile
612 quiet_cmd_vmlinux__ ?= LD $@
613 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
614 -T $(vmlinux-lds) $(vmlinux-init) \
615 --start-group $(vmlinux-main) --end-group \
616 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
618 # Generate new vmlinux version
619 quiet_cmd_vmlinux_version = GEN .version
620 cmd_vmlinux_version = set -e; \
621 if [ ! -r .version ]; then \
625 mv .version .old_version; \
626 expr 0$$(cat .old_version) + 1 >.version; \
628 $(MAKE) $(build)=init
630 # Generate System.map
631 quiet_cmd_sysmap = SYSMAP
632 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
635 # If CONFIG_KALLSYMS is set .version is already updated
636 # Generate System.map and verify that the content is consistent
637 # Use + in front of the vmlinux_version rule to silent warning with make -j2
638 # First command is ':' to allow us to use + in front of the rule
639 define rule_vmlinux__
641 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
643 $(call cmd,vmlinux__)
644 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
646 $(Q)$(if $($(quiet)cmd_sysmap), \
647 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
648 $(cmd_sysmap) $@ System.map; \
649 if [ $$? -ne 0 ]; then \
657 ifdef CONFIG_KALLSYMS
658 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
659 # It's a three stage process:
660 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
662 # Running kallsyms on that gives us .tmp_kallsyms1.o with
663 # the right size - vmlinux version (uname -v) is updated during this step
664 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
665 # but due to the added section, some addresses have shifted.
666 # From here, we generate a correct .tmp_kallsyms2.o
667 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
668 # o Verify that the System.map from vmlinux matches the map from
669 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
670 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
671 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
672 # temporary bypass to allow the kernel to be built while the
673 # maintainers work out what went wrong with kallsyms.
675 ifdef CONFIG_KALLSYMS_EXTRA_PASS
681 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
683 define verify_kallsyms
684 $(Q)$(if $($(quiet)cmd_sysmap), \
685 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
686 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
687 $(Q)cmp -s System.map .tmp_System.map || \
688 (echo Inconsistent kallsyms data; \
689 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
690 rm .tmp_kallsyms* ; /bin/false )
693 # Update vmlinux version before link
694 # Use + in front of this rule to silent warning about make -j1
695 # First command is ':' to allow us to use + in front of this rule
696 cmd_ksym_ld = $(cmd_vmlinux__)
699 +$(call cmd,vmlinux_version)
700 $(call cmd,vmlinux__)
701 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
704 # Generate .S file with all kernel symbols
705 quiet_cmd_kallsyms = KSYM $@
706 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
707 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
709 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
710 $(call if_changed_dep,as_o_S)
712 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
715 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
716 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
717 $(call if_changed_rule,ksym_ld)
719 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
720 $(call if_changed,vmlinux__)
722 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
723 $(call if_changed,vmlinux__)
725 # Needs to visit scripts/ before $(KALLSYMS) can be used.
726 $(KALLSYMS): scripts ;
728 # Generate some data for debugging strange kallsyms problems
729 debug_kallsyms: .tmp_map$(last_kallsyms)
731 .tmp_map%: .tmp_vmlinux% FORCE
732 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
738 endif # ifdef CONFIG_KALLSYMS
740 # vmlinux image - including updated kernel symbols
741 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
742 $(call if_changed_rule,vmlinux__)
743 $(Q)rm -f .old_version
745 # The actual objects are generated when descending,
746 # make sure no implicit rule kicks in
747 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
749 # Handle descending into subdirectories listed in $(vmlinux-dirs)
750 # Preset locale variables to speed up the build process. Limit locale
751 # tweaks to this spot to avoid wrong language settings when running
752 # make menuconfig etc.
753 # Error messages still appears in the original language
755 PHONY += $(vmlinux-dirs)
756 $(vmlinux-dirs): prepare scripts
757 $(Q)$(MAKE) $(build)=$@
759 # Build the kernel release string
760 # The KERNELRELEASE is stored in a file named include/config/kernel.release
761 # to be used when executing for example make install or make modules_install
763 # Take the contents of any files called localversion* and the config
764 # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
765 # LOCALVERSION from the command line override all of this
768 space := $(nullstring) # end of line
770 ___localver = $(objtree)/localversion* $(srctree)/localversion*
771 __localver = $(sort $(wildcard $(___localver)))
772 # skip backup files (containing '~')
773 _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
775 localver = $(subst $(space),, \
776 $(shell cat /dev/null $(_localver)) \
777 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
779 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
780 # and if the SCM is know a tag from the SCM is appended.
781 # The appended tag is determined by the SCM used.
783 # Currently, only git is supported.
784 # Other SCMs can edit scripts/setlocalversion and add the appropriate
786 ifdef CONFIG_LOCALVERSION_AUTO
787 _localver-auto = $(shell $(CONFIG_SHELL) \
788 $(srctree)/scripts/setlocalversion $(srctree))
789 localver-auto = $(LOCALVERSION)$(_localver-auto)
792 localver-full = $(localver)$(localver-auto)
794 # Store (new) KERNELRELASE string in include/config/kernel.release
795 kernelrelease = $(KERNELVERSION)$(localver-full)
796 include/config/kernel.release: include/config/auto.conf FORCE
798 $(Q)echo $(kernelrelease) > $@
801 # Things we need to do before we recursively start building the kernel
802 # or the modules are listed in "prepare".
803 # A multi level approach is used. prepareN is processed before prepareN-1.
804 # archprepare is used in arch Makefiles and when processed asm symlink,
805 # version.h and scripts_basic is processed / created.
807 # Listed in dependency order
808 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
810 # prepare-all is deprecated, use prepare as valid replacement
813 # prepare3 is used to check if we are building in a separate output directory,
815 # 1) Check that make has not been executed in the kernel src $(srctree)
816 # 2) Create the include2 directory, used for the second asm symlink
817 prepare3: include/config/kernel.release
818 ifneq ($(KBUILD_SRC),)
819 @echo ' Using $(srctree) as source for kernel'
820 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
821 echo " $(srctree) is not clean, please run 'make mrproper'";\
822 echo " in the '$(srctree)' directory.";\
825 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
826 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
829 # prepare2 creates a makefile if using a separate output directory
830 prepare2: prepare3 outputmakefile
832 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
833 include/asm include/config/auto.conf
834 ifneq ($(KBUILD_MODULES),)
835 $(Q)mkdir -p $(MODVERDIR)
836 $(Q)rm -f $(MODVERDIR)/*
839 archprepare: prepare1 scripts_basic
841 prepare0: archprepare FORCE
842 $(Q)$(MAKE) $(build)=.
844 # All the preparing..
845 prepare prepare-all: prepare0
847 # Leave this as default for preprocessing vmlinux.lds.S, which is now
848 # done in arch/$(ARCH)/kernel/Makefile
850 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
852 # FIXME: The asm symlink changes when $(ARCH) changes. That's
853 # hard to detect, but I suppose "make mrproper" is a good idea
854 # before switching between archs anyway.
857 @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
858 $(Q)if [ ! -d include ]; then mkdir -p include; fi;
859 @ln -fsn asm-$(ARCH) $@
861 # Generate some files
862 # ---------------------------------------------------------------------------
864 # KERNELRELEASE can change from a few different places, meaning version.h
865 # needs to be updated, so this check is forced on all builds
868 define filechk_utsrelease.h
869 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
870 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
873 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
876 define filechk_version.h
877 (echo \#define LINUX_VERSION_CODE $(shell \
878 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \
879 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
882 include/linux/version.h: $(srctree)/Makefile FORCE
883 $(call filechk,version.h)
885 include/linux/utsrelease.h: include/config/kernel.release FORCE
886 $(call filechk,utsrelease.h)
888 # ---------------------------------------------------------------------------
892 @echo '*** Warning: make $@ is unnecessary now.'
894 # ---------------------------------------------------------------------------
896 INSTALL_HDR_PATH=$(objtree)/usr
897 export INSTALL_HDR_PATH
899 PHONY += headers_install
900 headers_install: include/linux/version.h
901 $(Q)unifdef -Ux /dev/null
902 $(Q)rm -rf $(INSTALL_HDR_PATH)/include
903 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include
905 PHONY += headers_check
906 headers_check: headers_install
907 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1
909 # ---------------------------------------------------------------------------
914 # By default, build modules as well
921 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
922 @echo ' Building modules, stage 2.';
923 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
926 # Target to prepare building external modules
927 PHONY += modules_prepare
928 modules_prepare: prepare scripts
930 # Target to install modules
931 PHONY += modules_install
932 modules_install: _modinst_ _modinst_post
936 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
937 echo "Warning: you may need to install module-init-tools"; \
938 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
941 @rm -rf $(MODLIB)/kernel
942 @rm -f $(MODLIB)/source
943 @mkdir -p $(MODLIB)/kernel
944 @ln -s $(srctree) $(MODLIB)/source
945 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
946 rm -f $(MODLIB)/build ; \
947 ln -s $(objtree) $(MODLIB)/build ; \
949 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
951 # If System.map exists, run depmod. This deliberately does not have a
952 # dependency on System.map since that would run the dependency tree on
953 # vmlinux. This depmod is only for convenience to give the initial
954 # boot a modules.dep even before / is mounted read-write. However the
955 # boot script depmod is the master version.
956 ifeq "$(strip $(INSTALL_MOD_PATH))" ""
959 depmod_opts := -b $(INSTALL_MOD_PATH) -r
961 PHONY += _modinst_post
962 _modinst_post: _modinst_
963 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
965 else # CONFIG_MODULES
967 # Modules not configured
968 # ---------------------------------------------------------------------------
970 modules modules_install: FORCE
972 @echo "The present kernel configuration has modules disabled."
973 @echo "Type 'make config' and enable loadable module support."
974 @echo "Then build a kernel with module support enabled."
978 endif # CONFIG_MODULES
981 # Cleaning is done on three levels.
982 # make clean Delete most generated files
983 # Leave enough to build external modules
984 # make mrproper Delete the current configuration, and all generated files
985 # make distclean Remove editor backup files, patch leftover files and the like
987 # Directories & files removed with 'make clean'
988 CLEAN_DIRS += $(MODVERDIR)
989 CLEAN_FILES += vmlinux System.map \
990 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
992 # Directories & files removed with 'make mrproper'
993 MRPROPER_DIRS += include/config include2 usr/include
994 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
995 include/linux/autoconf.h include/linux/version.h \
996 include/linux/utsrelease.h \
997 Module.symvers tags TAGS cscope*
999 # clean - Delete most, but leave enough to build external modules
1001 clean: rm-dirs := $(CLEAN_DIRS)
1002 clean: rm-files := $(CLEAN_FILES)
1003 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
1005 PHONY += $(clean-dirs) clean archclean
1007 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1009 clean: archclean $(clean-dirs)
1012 @find . $(RCS_FIND_IGNORE) \
1013 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1014 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1015 -o -name '*.symtypes' \) \
1016 -type f -print | xargs rm -f
1018 # mrproper - Delete all generated files, including .config
1020 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1021 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1022 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1024 PHONY += $(mrproper-dirs) mrproper archmrproper
1026 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1028 mrproper: clean archmrproper $(mrproper-dirs)
1037 @find $(srctree) $(RCS_FIND_IGNORE) \
1038 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1039 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1040 -o -name '.*.rej' -o -size 0 \
1041 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1042 -type f -print | xargs rm -f
1045 # Packaging of the kernel to various formats
1046 # ---------------------------------------------------------------------------
1047 # rpm target kept for backward compatibility
1048 package-dir := $(srctree)/scripts/package
1050 %pkg: include/config/kernel.release FORCE
1051 $(Q)$(MAKE) $(build)=$(package-dir) $@
1052 rpm: include/config/kernel.release FORCE
1053 $(Q)$(MAKE) $(build)=$(package-dir) $@
1056 # Brief documentation of the typical targets used
1057 # ---------------------------------------------------------------------------
1059 boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
1060 boards := $(notdir $(boards))
1063 @echo 'Cleaning targets:'
1064 @echo ' clean - remove most generated files but keep the config'
1065 @echo ' mrproper - remove all generated files + config + various backup files'
1067 @echo 'Configuration targets:'
1068 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1070 @echo 'Other generic targets:'
1071 @echo ' all - Build all targets marked with [*]'
1072 @echo '* vmlinux - Build the bare kernel'
1073 @echo '* modules - Build all modules'
1074 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1075 @echo ' dir/ - Build all files in dir and below'
1076 @echo ' dir/file.[ois] - Build specified target only'
1077 @echo ' dir/file.ko - Build module including final link'
1078 @echo ' rpm - Build a kernel as an RPM package'
1079 @echo ' tags/TAGS - Generate tags file for editors'
1080 @echo ' cscope - Generate cscope index'
1081 @echo ' kernelrelease - Output the release version string'
1082 @echo ' kernelversion - Output the version stored in Makefile'
1083 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'
1084 @echo ' (default: $(INSTALL_HDR_PATH))'
1086 @echo 'Static analysers'
1087 @echo ' checkstack - Generate a list of stack hogs'
1088 @echo ' namespacecheck - Name space analysis on compiled kernel'
1089 @echo ' headers_check - Sanity check on exported headers'
1091 @echo 'Kernel packaging:'
1092 @$(MAKE) $(build)=$(package-dir) help
1094 @echo 'Documentation targets:'
1095 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1097 @echo 'Architecture specific targets ($(ARCH)):'
1098 @$(if $(archhelp),$(archhelp),\
1099 echo ' No architecture specific help defined for $(ARCH)')
1102 $(foreach b, $(boards), \
1103 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1106 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1107 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1108 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1109 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1111 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1112 @echo 'For further info see the ./README file'
1115 # Documentation targets
1116 # ---------------------------------------------------------------------------
1117 %docs: scripts_basic FORCE
1118 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1120 else # KBUILD_EXTMOD
1123 # External module support.
1124 # When building external modules the kernel used as basis is considered
1125 # read-only, and no consistency checks are made and the make
1126 # system is not used on the basis kernel. If updates are required
1127 # in the basis kernel ordinary make commands (without M=...) must
1130 # The following are the only valid targets when building external
1132 # make M=dir clean Delete all automatically generated files
1133 # make M=dir modules Make all modules in specified dir
1134 # make M=dir Same as 'make M=dir modules'
1135 # make M=dir modules_install
1136 # Install the modules built in the module directory
1137 # Assumes install directory is already created
1139 # We are always building modules
1141 PHONY += crmodverdir
1143 $(Q)mkdir -p $(MODVERDIR)
1144 $(Q)rm -f $(MODVERDIR)/*
1146 PHONY += $(objtree)/Module.symvers
1147 $(objtree)/Module.symvers:
1148 @test -e $(objtree)/Module.symvers || ( \
1150 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1151 echo " is missing; modules will have no dependencies and modversions."; \
1154 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1155 PHONY += $(module-dirs) modules
1156 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1157 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1159 modules: $(module-dirs)
1160 @echo ' Building modules, stage 2.';
1161 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1163 PHONY += modules_install
1164 modules_install: _emodinst_ _emodinst_post
1166 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1169 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1170 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
1172 # Run depmod only is we have System.map and depmod is executable
1173 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1174 cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \
1175 $(DEPMOD) -ae -F System.map \
1176 $(if $(strip $(INSTALL_MOD_PATH)), \
1177 -b $(INSTALL_MOD_PATH) -r) \
1181 PHONY += _emodinst_post
1182 _emodinst_post: _emodinst_
1185 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1187 PHONY += $(clean-dirs) clean
1189 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1191 clean: rm-dirs := $(MODVERDIR)
1192 clean: $(clean-dirs)
1194 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1195 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1196 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1197 -type f -print | xargs rm -f
1200 @echo ' Building external modules.'
1201 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1203 @echo ' modules - default target, build the module(s)'
1204 @echo ' modules_install - install the module'
1205 @echo ' clean - remove generated files in module directory only'
1209 PHONY += prepare scripts
1212 endif # KBUILD_EXTMOD
1214 # Generate tags for editors
1215 # ---------------------------------------------------------------------------
1217 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
1218 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
1219 #Adding $(srctree) adds about 20M on i386 to the size of the output file!
1221 ifeq ($(src),$(obj))
1224 __srctree = $(srctree)/
1227 ifeq ($(ALLSOURCE_ARCHS),)
1229 ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
1231 ALLINCLUDE_ARCHS := $(ARCH)
1234 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour.
1235 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
1238 ALLSOURCE_ARCHS := $(ARCH)
1241 ( find $(__srctree) $(RCS_FIND_IGNORE) \
1242 \( -name include -o -name arch \) -prune -o \
1244 for ARCH in $(ALLSOURCE_ARCHS) ; do \
1245 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
1248 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
1250 find $(__srctree)include $(RCS_FIND_IGNORE) \
1251 \( -name config -o -name 'asm-*' \) -prune \
1252 -o -name $1 -print; \
1253 for ARCH in $(ALLINCLUDE_ARCHS) ; do \
1254 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
1257 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
1262 $(call find-sources,'*.[chS]')
1265 $(call find-sources,'Kconfig*')
1267 define all-defconfigs
1268 $(call find-sources,'defconfig')
1271 quiet_cmd_cscope-file = FILELST cscope.files
1272 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
1274 quiet_cmd_cscope = MAKE cscope.out
1275 cmd_cscope = cscope -b
1278 $(call cmd,cscope-file)
1281 quiet_cmd_TAGS = MAKE $@
1284 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
1285 echo "-I __initdata,__exitdata,__acquires,__releases \
1286 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1287 --extra=+f --c-kinds=+px"`; \
1288 $(all-sources) | xargs etags $$ETAGSF -a; \
1289 if test "x$$ETAGSF" = x; then \
1290 $(all-kconfigs) | xargs etags -a \
1291 --regex='/^config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
1292 $(all-defconfigs) | xargs etags -a \
1293 --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
1301 quiet_cmd_tags = MAKE $@
1304 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
1305 echo "-I __initdata,__exitdata,__acquires,__releases \
1306 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1307 --extra=+f --c-kinds=+px"`; \
1308 $(all-sources) | xargs ctags $$CTAGSF -a
1315 # Scripts to check various things for consistency
1316 # ---------------------------------------------------------------------------
1319 find * $(RCS_FIND_IGNORE) \
1320 -name '*.[hcS]' -type f -print | sort \
1321 | xargs $(PERL) -w scripts/checkincludes.pl
1324 find * $(RCS_FIND_IGNORE) \
1325 -name '*.[hcS]' -type f -print | sort \
1326 | xargs $(PERL) -w scripts/checkversion.pl
1329 $(PERL) $(srctree)/scripts/namespace.pl
1331 endif #ifeq ($(config-targets),1)
1332 endif #ifeq ($(mixed-targets),1)
1334 PHONY += checkstack kernelrelease kernelversion
1336 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1337 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1340 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
1341 $(error kernelrelease not valid - run 'make prepare' to update it))
1343 @echo $(KERNELVERSION)
1346 # ---------------------------------------------------------------------------
1347 # Single targets are compatible with:
1348 # - build whith mixed source and output
1349 # - build with separate output dir 'make O=...'
1350 # - external modules
1352 # target-dir => where to store outputfile
1353 # build-dir => directory in kernel source tree to use
1355 ifeq ($(KBUILD_EXTMOD),)
1356 build-dir = $(patsubst %/,%,$(dir $@))
1357 target-dir = $(dir $@)
1359 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1360 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1361 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1364 %.s: %.c prepare scripts FORCE
1365 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1366 %.i: %.c prepare scripts FORCE
1367 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1368 %.o: %.c prepare scripts FORCE
1369 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1370 %.lst: %.c prepare scripts FORCE
1371 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1372 %.s: %.S prepare scripts FORCE
1373 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1374 %.o: %.S prepare scripts FORCE
1375 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1376 %.symtypes: %.c prepare scripts FORCE
1377 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1380 / %/: prepare scripts FORCE
1381 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1382 $(build)=$(build-dir)
1383 %.ko: prepare scripts FORCE
1384 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1385 $(build)=$(build-dir) $(@:.ko=.o)
1386 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1388 # FIXME Should go into a make.lib or something
1389 # ===========================================================================
1391 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1392 cmd_rmdirs = rm -rf $(rm-dirs)
1394 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1395 cmd_rmfiles = rm -f $(rm-files)
1398 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
1399 $(NOSTDINC_FLAGS) $(CPPFLAGS) \
1400 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
1402 quiet_cmd_as_o_S = AS $@
1403 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1405 # read all saved command lines
1407 targets := $(wildcard $(sort $(targets)))
1408 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1410 ifneq ($(cmd_files),)
1411 $(cmd_files): ; # Do not try to update included dependency files
1412 include $(cmd_files)
1415 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1417 # $(Q)$(MAKE) $(clean)=dir
1418 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1420 endif # skip-makefile
1426 # Declare the contents of the .PHONY variable as phony. We keep that
1427 # information in a variable se we can use it in if_changed and friends.