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 # Do not print "Entering directory ..."
14 MAKEFLAGS += --no-print-directory
16 # We are using a recursive build, so we need to do a little thinking
17 # to get the ordering right.
19 # Most importantly: sub-Makefiles should only ever modify files in
20 # their own directory. If in some directory we have a dependency on
21 # a file in another dir (which doesn't happen often, but it's often
22 # unavoidable when linking the built-in.o targets which finally
23 # turn into vmlinux), we will call a sub make in that other dir, and
24 # after that we are sure that everything which is in that other dir
27 # The only cases where we need to modify files which have global
28 # effects are thus separated out and done before the recursive
29 # descending is started. They are now explicitly listed as the
32 # To put more focus on warnings, be less verbose as default
33 # Use 'make V=1' to see the full commands
36 ifeq ("$(origin V)", "command line")
44 # Call a source code checker (by default, "sparse") as part of the
47 # Use 'make C=1' to enable checking of only re-compiled files.
48 # Use 'make C=2' to enable checking of *all* source files, regardless
49 # of whether they are re-compiled or not.
51 # See the file "Documentation/sparse.txt" for more details, including
52 # where to get the "sparse" utility.
55 ifeq ("$(origin C)", "command line")
56 KBUILD_CHECKSRC = $(C)
59 ifndef KBUILD_CHECKSRC
63 # Use make M=dir to specify directory of external module to build
64 # Old syntax make ... SUBDIRS=$PWD is still supported
65 # Setting the environment variable KBUILD_EXTMOD take precedence
67 KBUILD_EXTMOD ?= $(SUBDIRS)
70 ifeq ("$(origin M)", "command line")
76 # kbuild supports saving output files in a separate directory.
77 # To locate output files in a separate directory two syntaxes are supported.
78 # In both cases the working directory must be the root of the kernel src.
80 # Use "make O=dir/to/store/output/files/"
82 # 2) Set KBUILD_OUTPUT
83 # Set the environment variable KBUILD_OUTPUT to point to the directory
84 # where the output files shall be placed.
85 # export KBUILD_OUTPUT=dir/to/store/output/files/
88 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
92 # KBUILD_SRC is set on invocation of make in OBJ directory
93 # KBUILD_SRC is not intended to be used by the regular user (for now)
96 # OK, Make called in directory where kernel src resides
97 # Do we want to locate output files in a separate directory?
99 ifeq ("$(origin O)", "command line")
100 KBUILD_OUTPUT := $(O)
104 # That's our default target when none is given on the command line
108 ifneq ($(KBUILD_OUTPUT),)
109 # Invoke a second make in the output directory, passing relevant variables
110 # check that the output directory actually exists
111 saved-output := $(KBUILD_OUTPUT)
112 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
113 $(if $(KBUILD_OUTPUT),, \
114 $(error output directory "$(saved-output)" does not exist))
116 PHONY += $(MAKECMDGOALS)
118 $(filter-out _all,$(MAKECMDGOALS)) _all:
119 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
120 KBUILD_SRC=$(CURDIR) \
121 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
123 # Leave processing to above invocation of make
125 endif # ifneq ($(KBUILD_OUTPUT),)
126 endif # ifeq ($(KBUILD_SRC),)
128 # We process the rest of the Makefile if this is the final invocation of make
129 ifeq ($(skip-makefile),)
131 # If building an external module we do not care about the all: rule
132 # but instead _all depend on modules
134 ifeq ($(KBUILD_EXTMOD),)
140 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
142 # FIXME - TOPDIR is obsolete, use srctree/objtree
147 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
149 export srctree objtree VPATH TOPDIR
152 # SUBARCH tells the usermode build what the underlying arch is. That is set
153 # first, and if a usermode build is happening, the "ARCH=um" on the command
154 # line overrides the setting of ARCH below. If a native build is happening,
155 # then ARCH is assigned, getting whatever value it gets normally, and
156 # SUBARCH is subsequently ignored.
158 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
159 -e s/arm.*/arm/ -e s/sa110/arm/ \
160 -e s/s390x/s390/ -e s/parisc64/parisc/ \
161 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
163 # Cross compiling and selecting different set of gcc/bin-utils
164 # ---------------------------------------------------------------------------
166 # When performing cross compilation for other architectures ARCH shall be set
167 # to the target architecture. (See arch/* for the possibilities).
168 # ARCH can be set during invocation of make:
170 # Another way is to have ARCH set in the environment.
171 # The default ARCH is the host where make is executed.
173 # CROSS_COMPILE specify the prefix used for all executables used
174 # during compilation. Only gcc and related bin-utils executables
175 # are prefixed with $(CROSS_COMPILE).
176 # CROSS_COMPILE can be set on the command line
177 # make CROSS_COMPILE=ia64-linux-
178 # Alternatively CROSS_COMPILE can be set in the environment.
179 # Default value for CROSS_COMPILE is not to prefix executables
180 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
185 # Architecture as present in compile.h
186 UTS_MACHINE := $(ARCH)
188 KCONFIG_CONFIG ?= .config
190 # SHELL used by kbuild
191 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
192 else if [ -x /bin/bash ]; then echo /bin/bash; \
193 else echo sh; fi ; fi)
197 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
200 # Decide whether to build built-in, modular, or both.
201 # Normally, just do built-in.
206 # If we have only "make modules", don't compile built-in objects.
207 # When we're building modules with modversions, we need to consider
208 # the built-in objects during the descend as well, in order to
209 # make sure the checksums are up to date before we record them.
211 ifeq ($(MAKECMDGOALS),modules)
212 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
215 # If we have "make <whatever> modules", compile modules
216 # in addition to whatever we do anyway.
217 # Just "make" or "make all" shall build modules as well
219 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
223 ifeq ($(MAKECMDGOALS),)
227 export KBUILD_MODULES KBUILD_BUILTIN
228 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
231 # ---------------------------------------------------------------------------
233 # Normally, we echo the whole command before executing it. By making
234 # that echo $($(quiet)$(cmd)), we now have the possibility to set
235 # $(quiet) to choose other forms of output instead, e.g.
237 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
238 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
240 # If $(quiet) is empty, the whole command will be printed.
241 # If it is set to "quiet_", only the short version will be printed.
242 # If it is set to "silent_", nothing will be printed at all, since
243 # the variable $(silent_cmd_cc_o_c) doesn't exist.
245 # A simple variant is to prefix commands with $(Q) - that's useful
246 # for commands that shall be hidden in non-verbose mode.
250 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
251 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
253 ifeq ($(KBUILD_VERBOSE),1)
261 # If the user is running make -s (silent mode), suppress echoing of
264 ifneq ($(findstring s,$(MAKEFLAGS)),)
268 export quiet Q KBUILD_VERBOSE
271 # Look for make include files relative to root of kernel src
272 MAKEFLAGS += --include-dir=$(srctree)
274 # We need some generic definitions
275 include $(srctree)/scripts/Kbuild.include
277 # Do not use make's built-in rules and variables
278 # This increases performance and avoid hard-to-debug behavour
281 # Make variables (CC, etc...)
283 AS = $(CROSS_COMPILE)as
284 LD = $(CROSS_COMPILE)ld
285 CC = $(CROSS_COMPILE)gcc
287 AR = $(CROSS_COMPILE)ar
288 NM = $(CROSS_COMPILE)nm
289 STRIP = $(CROSS_COMPILE)strip
290 OBJCOPY = $(CROSS_COMPILE)objcopy
291 OBJDUMP = $(CROSS_COMPILE)objdump
293 GENKSYMS = scripts/genksyms/genksyms
294 DEPMOD = /sbin/depmod
295 KALLSYMS = scripts/kallsyms
299 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
301 CFLAGS_MODULE = $(MODFLAGS)
302 AFLAGS_MODULE = $(MODFLAGS)
308 # Use LINUXINCLUDE when you must reference the include/ directory.
309 # Needed to be compatible with the O= option
310 LINUXINCLUDE := -Iinclude \
311 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
312 -include include/linux/autoconf.h
314 CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
316 CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
317 -fno-strict-aliasing -fno-common
318 AFLAGS := -D__ASSEMBLY__
320 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
321 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
322 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
324 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
325 export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
326 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
327 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
329 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
330 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
331 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
333 # When compiling out-of-tree modules, put MODVERDIR in the module
334 # tree rather than in the kernel tree. The kernel tree might
336 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
338 # Files to ignore in find ... statements
340 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
341 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
343 # ===========================================================================
344 # Rules shared between *config targets and build targets
346 # Basic helpers built in scripts/
347 PHONY += scripts_basic
349 $(Q)$(MAKE) $(build)=scripts/basic
351 # To avoid any implicit rule to kick in, define an empty command.
352 scripts/basic/%: scripts_basic ;
354 PHONY += outputmakefile
355 # outputmakefile generates a Makefile in the output directory, if using a
356 # separate output directory. This allows convenient use of make in the
359 ifneq ($(KBUILD_SRC),)
360 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
361 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
364 # To make sure we do not include .config for any of the *config targets
365 # catch them early, and hand them over to scripts/kconfig/Makefile
366 # It is allowed to specify more targets when calling make, including
367 # mixing *config targets and build targets.
368 # For example 'make oldconfig all'.
369 # Detect when mixed targets is specified, and make a second invocation
370 # of make so .config is not included in this case either (for *config).
372 no-dot-config-targets := clean mrproper distclean \
373 cscope TAGS tags help %docs check% \
374 include/linux/version.h headers_% \
375 kernelrelease kernelversion
381 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
382 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
387 ifeq ($(KBUILD_EXTMOD),)
388 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
390 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
396 ifeq ($(mixed-targets),1)
397 # ===========================================================================
398 # We're called with mixed targets (*config and build targets).
399 # Handle them one by one.
402 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
405 ifeq ($(config-targets),1)
406 # ===========================================================================
407 # *config targets only - make sure prerequisites are updated, and descend
408 # in scripts/kconfig to make the *config target
410 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
411 # KBUILD_DEFCONFIG may point out an alternative default configuration
412 # used for 'make defconfig'
413 include $(srctree)/arch/$(ARCH)/Makefile
414 export KBUILD_DEFCONFIG
416 config %config: scripts_basic outputmakefile FORCE
417 $(Q)mkdir -p include/linux include/config
418 $(Q)$(MAKE) $(build)=scripts/kconfig $@
421 # ===========================================================================
422 # Build targets only - this includes vmlinux, arch specific targets, clean
423 # targets and others. In general all targets except *config targets.
425 ifeq ($(KBUILD_EXTMOD),)
426 # Additional helpers built in scripts/
427 # Carefully list dependencies so we do not try to build scripts twice
430 scripts: scripts_basic include/config/auto.conf
431 $(Q)$(MAKE) $(build)=$(@)
433 # Objects we will link into vmlinux / subdirs we need to visit
435 drivers-y := drivers/ sound/
439 endif # KBUILD_EXTMOD
441 ifeq ($(dot-config),1)
443 -include include/config/auto.conf
445 ifeq ($(KBUILD_EXTMOD),)
446 # Read in dependencies to all Kconfig* files, make sure to run
447 # oldconfig if changes are detected.
448 -include include/config/auto.conf.cmd
450 # To avoid any implicit rule to kick in, define an empty command
451 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
453 # If .config is newer than include/config/auto.conf, someone tinkered
454 # with it and forgot to run make oldconfig.
455 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
456 # we execute the config step to be sure to catch updated Kconfig files
457 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
458 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
460 # external modules needs include/linux/autoconf.h and include/config/auto.conf
461 # but do not care if they are up-to-date. Use auto.conf to trigger the test
462 PHONY += include/config/auto.conf
464 include/config/auto.conf:
465 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \
467 echo " ERROR: Kernel configuration is invalid."; \
468 echo " include/linux/autoconf.h or $@ are missing."; \
469 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
473 endif # KBUILD_EXTMOD
476 # Dummy target needed, because used as prerequisite
477 include/config/auto.conf: ;
478 endif # $(dot-config)
480 # The all: target is the default when no target is given on the
482 # This allow a user to issue only 'make' to build a kernel including modules
483 # Defaults vmlinux but it is usually overridden in the arch makefile
486 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
492 include $(srctree)/arch/$(ARCH)/Makefile
494 ifdef CONFIG_FRAME_POINTER
495 CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
497 CFLAGS += -fomit-frame-pointer
500 ifdef CONFIG_UNWIND_INFO
501 CFLAGS += -fasynchronous-unwind-tables
504 ifdef CONFIG_DEBUG_INFO
508 # Force gcc to behave correct even for buggy distributions
509 CFLAGS += $(call cc-option, -fno-stack-protector)
511 # arch Makefile may override CC so keep this after arch Makefile is included
512 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
513 CHECKFLAGS += $(NOSTDINC_FLAGS)
515 # warn about C99 declaration after statement
516 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
518 # disable pointer signed / unsigned warnings in gcc 4.0
519 CFLAGS += $(call cc-option,-Wno-pointer-sign,)
521 # Default kernel image to build when no specific target is given.
522 # KBUILD_IMAGE may be overruled on the command line or
523 # set in the environment
524 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
526 export KBUILD_IMAGE ?= vmlinux
529 # INSTALL_PATH specifies where to place the updated kernel and system map
530 # images. Default is /boot, but you can set it to other values
531 export INSTALL_PATH ?= /boot
534 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
535 # relocations required by build roots. This is not defined in the
536 # makefile but the argument can be passed to make if needed.
539 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
543 # INSTALL_MOD_STRIP, if defined, will cause modules to be
544 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
545 # the default option --strip-debug will be used. Otherwise,
546 # INSTALL_MOD_STRIP will used as the options to the strip command.
548 ifdef INSTALL_MOD_STRIP
549 ifeq ($(INSTALL_MOD_STRIP),1)
550 mod_strip_cmd = $(STRIP) --strip-debug
552 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
553 endif # INSTALL_MOD_STRIP=1
556 endif # INSTALL_MOD_STRIP
560 ifeq ($(KBUILD_EXTMOD),)
561 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
563 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
564 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
565 $(net-y) $(net-m) $(libs-y) $(libs-m)))
567 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
569 $(core-n) $(core-) $(drivers-n) $(drivers-) \
570 $(net-n) $(net-) $(libs-n) $(libs-))))
572 init-y := $(patsubst %/, %/built-in.o, $(init-y))
573 core-y := $(patsubst %/, %/built-in.o, $(core-y))
574 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
575 net-y := $(patsubst %/, %/built-in.o, $(net-y))
576 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
577 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
578 libs-y := $(libs-y1) $(libs-y2)
581 # ---------------------------------------------------------------------------
582 # vmlinux is built from the objects selected by $(vmlinux-init) and
583 # $(vmlinux-main). Most are built-in.o files from top-level directories
584 # in the kernel tree, others are specified in arch/$(ARCH)Makefile.
585 # Ordering when linking is important, and $(vmlinux-init) must be first.
590 # +-< $(vmlinux-init)
591 # | +--< init/version.o + more
593 # +--< $(vmlinux-main)
594 # | +--< driver/built-in.o mm/built-in.o + more
596 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
598 # vmlinux version (uname -v) cannot be updated during normal
599 # descending-into-subdirs phase since we do not yet know if we need to
601 # Therefore this step is delayed until just before final link of vmlinux -
602 # except in the kallsyms case where it is done just before adding the
603 # symbols to the kernel.
605 # System.map is generated to document addresses of all kernel symbols
607 vmlinux-init := $(head-y) $(init-y)
608 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
609 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
610 vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds
612 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
613 # May be overridden by arch/$(ARCH)/Makefile
614 quiet_cmd_vmlinux__ ?= LD $@
615 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
616 -T $(vmlinux-lds) $(vmlinux-init) \
617 --start-group $(vmlinux-main) --end-group \
618 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
620 # Generate new vmlinux version
621 quiet_cmd_vmlinux_version = GEN .version
622 cmd_vmlinux_version = set -e; \
623 if [ ! -r .version ]; then \
627 mv .version .old_version; \
628 expr 0$$(cat .old_version) + 1 >.version; \
630 $(MAKE) $(build)=init
632 # Generate System.map
633 quiet_cmd_sysmap = SYSMAP
634 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
637 # If CONFIG_KALLSYMS is set .version is already updated
638 # Generate System.map and verify that the content is consistent
639 # Use + in front of the vmlinux_version rule to silent warning with make -j2
640 # First command is ':' to allow us to use + in front of the rule
641 define rule_vmlinux__
643 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
645 $(call cmd,vmlinux__)
646 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
648 $(Q)$(if $($(quiet)cmd_sysmap), \
649 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
650 $(cmd_sysmap) $@ System.map; \
651 if [ $$? -ne 0 ]; then \
659 ifdef CONFIG_KALLSYMS
660 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
661 # It's a three stage process:
662 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
664 # Running kallsyms on that gives us .tmp_kallsyms1.o with
665 # the right size - vmlinux version (uname -v) is updated during this step
666 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
667 # but due to the added section, some addresses have shifted.
668 # From here, we generate a correct .tmp_kallsyms2.o
669 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
670 # o Verify that the System.map from vmlinux matches the map from
671 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
672 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
673 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
674 # temporary bypass to allow the kernel to be built while the
675 # maintainers work out what went wrong with kallsyms.
677 ifdef CONFIG_KALLSYMS_EXTRA_PASS
683 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
685 define verify_kallsyms
686 $(Q)$(if $($(quiet)cmd_sysmap), \
687 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
688 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
689 $(Q)cmp -s System.map .tmp_System.map || \
690 (echo Inconsistent kallsyms data; \
691 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
692 rm .tmp_kallsyms* ; /bin/false )
695 # Update vmlinux version before link
696 # Use + in front of this rule to silent warning about make -j1
697 # First command is ':' to allow us to use + in front of this rule
698 cmd_ksym_ld = $(cmd_vmlinux__)
701 +$(call cmd,vmlinux_version)
702 $(call cmd,vmlinux__)
703 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
706 # Generate .S file with all kernel symbols
707 quiet_cmd_kallsyms = KSYM $@
708 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
709 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
711 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
712 $(call if_changed_dep,as_o_S)
714 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
717 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
718 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
719 $(call if_changed_rule,ksym_ld)
721 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
722 $(call if_changed,vmlinux__)
724 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
725 $(call if_changed,vmlinux__)
727 # Needs to visit scripts/ before $(KALLSYMS) can be used.
728 $(KALLSYMS): scripts ;
730 # Generate some data for debugging strange kallsyms problems
731 debug_kallsyms: .tmp_map$(last_kallsyms)
733 .tmp_map%: .tmp_vmlinux% FORCE
734 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
740 endif # ifdef CONFIG_KALLSYMS
742 # vmlinux image - including updated kernel symbols
743 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
744 $(call if_changed_rule,vmlinux__)
745 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
746 $(Q)rm -f .old_version
748 # The actual objects are generated when descending,
749 # make sure no implicit rule kicks in
750 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
752 # Handle descending into subdirectories listed in $(vmlinux-dirs)
753 # Preset locale variables to speed up the build process. Limit locale
754 # tweaks to this spot to avoid wrong language settings when running
755 # make menuconfig etc.
756 # Error messages still appears in the original language
758 PHONY += $(vmlinux-dirs)
759 $(vmlinux-dirs): prepare scripts
760 $(Q)$(MAKE) $(build)=$@
762 # Build the kernel release string
764 # The KERNELRELEASE value built here is stored in the file
765 # include/config/kernel.release, and is used when executing several
766 # make targets, such as "make install" or "make modules_install."
768 # The eventual kernel release string consists of the following fields,
769 # shown in a hierarchical format to show how smaller parts are concatenated
770 # to form the larger and final value, with values coming from places like
771 # the Makefile, kernel config options, make command line options and/or
772 # SCM tag information.
776 # $(PATCHLEVEL) eg, 6
778 # $(EXTRAVERSION) eg, -rc6
781 # localversion* (all localversion* files)
782 # $(CONFIG_LOCALVERSION) (from kernel config setting)
783 # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set)
784 # ./scripts/setlocalversion (SCM tag, if one exists)
785 # $(LOCALVERSION) (from make command line if provided)
787 # Note how the final $(localver-auto) string is included *only* if the
788 # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the
789 # moment, only git is supported but other SCMs can edit the script
790 # scripts/setlocalversion and add the appropriate checks as needed.
793 space := $(nullstring) # end of line
795 ___localver = $(objtree)/localversion* $(srctree)/localversion*
796 __localver = $(sort $(wildcard $(___localver)))
797 # skip backup files (containing '~')
798 _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
800 localver = $(subst $(space),, \
801 $(shell cat /dev/null $(_localver)) \
802 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
804 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
805 # and if the SCM is know a tag from the SCM is appended.
806 # The appended tag is determined by the SCM used.
808 # Currently, only git is supported.
809 # Other SCMs can edit scripts/setlocalversion and add the appropriate
811 ifdef CONFIG_LOCALVERSION_AUTO
812 _localver-auto = $(shell $(CONFIG_SHELL) \
813 $(srctree)/scripts/setlocalversion $(srctree))
814 localver-auto = $(LOCALVERSION)$(_localver-auto)
817 localver-full = $(localver)$(localver-auto)
819 # Store (new) KERNELRELASE string in include/config/kernel.release
820 kernelrelease = $(KERNELVERSION)$(localver-full)
821 include/config/kernel.release: include/config/auto.conf FORCE
823 $(Q)echo $(kernelrelease) > $@
826 # Things we need to do before we recursively start building the kernel
827 # or the modules are listed in "prepare".
828 # A multi level approach is used. prepareN is processed before prepareN-1.
829 # archprepare is used in arch Makefiles and when processed asm symlink,
830 # version.h and scripts_basic is processed / created.
832 # Listed in dependency order
833 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
835 # prepare-all is deprecated, use prepare as valid replacement
838 # prepare3 is used to check if we are building in a separate output directory,
840 # 1) Check that make has not been executed in the kernel src $(srctree)
841 # 2) Create the include2 directory, used for the second asm symlink
842 prepare3: include/config/kernel.release
843 ifneq ($(KBUILD_SRC),)
844 @echo ' Using $(srctree) as source for kernel'
845 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
846 echo " $(srctree) is not clean, please run 'make mrproper'";\
847 echo " in the '$(srctree)' directory.";\
850 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
851 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
854 # prepare2 creates a makefile if using a separate output directory
855 prepare2: prepare3 outputmakefile
857 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
858 include/asm include/config/auto.conf
859 ifneq ($(KBUILD_MODULES),)
860 $(Q)mkdir -p $(MODVERDIR)
861 $(Q)rm -f $(MODVERDIR)/*
864 archprepare: prepare1 scripts_basic
866 prepare0: archprepare FORCE
867 $(Q)$(MAKE) $(build)=.
869 # All the preparing..
870 prepare prepare-all: prepare0
872 # Leave this as default for preprocessing vmlinux.lds.S, which is now
873 # done in arch/$(ARCH)/kernel/Makefile
875 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
877 # FIXME: The asm symlink changes when $(ARCH) changes. That's
878 # hard to detect, but I suppose "make mrproper" is a good idea
879 # before switching between archs anyway.
882 @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
883 $(Q)if [ ! -d include ]; then mkdir -p include; fi;
884 @ln -fsn asm-$(ARCH) $@
886 # Generate some files
887 # ---------------------------------------------------------------------------
889 # KERNELRELEASE can change from a few different places, meaning version.h
890 # needs to be updated, so this check is forced on all builds
893 define filechk_utsrelease.h
894 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
895 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
898 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
901 define filechk_version.h
902 (echo \#define LINUX_VERSION_CODE $(shell \
903 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \
904 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
907 include/linux/version.h: $(srctree)/Makefile FORCE
908 $(call filechk,version.h)
910 include/linux/utsrelease.h: include/config/kernel.release FORCE
911 $(call filechk,utsrelease.h)
913 # ---------------------------------------------------------------------------
917 @echo '*** Warning: make $@ is unnecessary now.'
919 # ---------------------------------------------------------------------------
921 INSTALL_HDR_PATH=$(objtree)/usr
922 export INSTALL_HDR_PATH
924 HDRARCHES=$(filter-out generic,$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild)))
926 PHONY += headers_install_all
927 headers_install_all: include/linux/version.h scripts_basic FORCE
928 $(Q)$(MAKE) $(build)=scripts scripts/unifdef
929 $(Q)for arch in $(HDRARCHES); do \
930 $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch ;\
933 PHONY += headers_install
934 headers_install: include/linux/version.h scripts_basic FORCE
935 @if [ ! -r include/asm-$(ARCH)/Kbuild ]; then \
936 echo '*** Error: Headers not exportable for this architecture ($(ARCH))'; \
938 $(Q)$(MAKE) $(build)=scripts scripts/unifdef
939 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include
941 PHONY += headers_check
942 headers_check: headers_install
943 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1
945 # ---------------------------------------------------------------------------
950 # By default, build modules as well
957 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
958 @echo ' Building modules, stage 2.';
959 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
962 # Target to prepare building external modules
963 PHONY += modules_prepare
964 modules_prepare: prepare scripts
966 # Target to install modules
967 PHONY += modules_install
968 modules_install: _modinst_ _modinst_post
972 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
973 echo "Warning: you may need to install module-init-tools"; \
974 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
977 @rm -rf $(MODLIB)/kernel
978 @rm -f $(MODLIB)/source
979 @mkdir -p $(MODLIB)/kernel
980 @ln -s $(srctree) $(MODLIB)/source
981 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
982 rm -f $(MODLIB)/build ; \
983 ln -s $(objtree) $(MODLIB)/build ; \
985 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
987 # If System.map exists, run depmod. This deliberately does not have a
988 # dependency on System.map since that would run the dependency tree on
989 # vmlinux. This depmod is only for convenience to give the initial
990 # boot a modules.dep even before / is mounted read-write. However the
991 # boot script depmod is the master version.
992 ifeq "$(strip $(INSTALL_MOD_PATH))" ""
995 depmod_opts := -b $(INSTALL_MOD_PATH) -r
997 PHONY += _modinst_post
998 _modinst_post: _modinst_
999 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
1001 else # CONFIG_MODULES
1003 # Modules not configured
1004 # ---------------------------------------------------------------------------
1006 modules modules_install: FORCE
1008 @echo "The present kernel configuration has modules disabled."
1009 @echo "Type 'make config' and enable loadable module support."
1010 @echo "Then build a kernel with module support enabled."
1014 endif # CONFIG_MODULES
1017 # Cleaning is done on three levels.
1018 # make clean Delete most generated files
1019 # Leave enough to build external modules
1020 # make mrproper Delete the current configuration, and all generated files
1021 # make distclean Remove editor backup files, patch leftover files and the like
1023 # Directories & files removed with 'make clean'
1024 CLEAN_DIRS += $(MODVERDIR)
1025 CLEAN_FILES += vmlinux System.map \
1026 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
1028 # Directories & files removed with 'make mrproper'
1029 MRPROPER_DIRS += include/config include2 usr/include
1030 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
1031 include/linux/autoconf.h include/linux/version.h \
1032 include/linux/utsrelease.h \
1033 Module.symvers tags TAGS cscope*
1035 # clean - Delete most, but leave enough to build external modules
1037 clean: rm-dirs := $(CLEAN_DIRS)
1038 clean: rm-files := $(CLEAN_FILES)
1039 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
1041 PHONY += $(clean-dirs) clean archclean
1043 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1045 clean: archclean $(clean-dirs)
1048 @find . $(RCS_FIND_IGNORE) \
1049 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1050 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1051 -o -name '*.symtypes' \) \
1052 -type f -print | xargs rm -f
1054 # mrproper - Delete all generated files, including .config
1056 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1057 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1058 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1060 PHONY += $(mrproper-dirs) mrproper archmrproper
1062 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1064 mrproper: clean archmrproper $(mrproper-dirs)
1073 @find $(srctree) $(RCS_FIND_IGNORE) \
1074 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1075 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1076 -o -name '.*.rej' -o -size 0 \
1077 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1078 -type f -print | xargs rm -f
1081 # Packaging of the kernel to various formats
1082 # ---------------------------------------------------------------------------
1083 # rpm target kept for backward compatibility
1084 package-dir := $(srctree)/scripts/package
1086 %pkg: include/config/kernel.release FORCE
1087 $(Q)$(MAKE) $(build)=$(package-dir) $@
1088 rpm: include/config/kernel.release FORCE
1089 $(Q)$(MAKE) $(build)=$(package-dir) $@
1092 # Brief documentation of the typical targets used
1093 # ---------------------------------------------------------------------------
1095 boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
1096 boards := $(notdir $(boards))
1099 @echo 'Cleaning targets:'
1100 @echo ' clean - remove most generated files but keep the config and'
1101 @echo ' enough build support to build external modules'
1102 @echo ' mrproper - remove all generated files + config + various backup files'
1103 @echo ' distclean - mrproper + remove editor backup and patch files'
1105 @echo 'Configuration targets:'
1106 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1108 @echo 'Other generic targets:'
1109 @echo ' all - Build all targets marked with [*]'
1110 @echo '* vmlinux - Build the bare kernel'
1111 @echo '* modules - Build all modules'
1112 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1113 @echo ' dir/ - Build all files in dir and below'
1114 @echo ' dir/file.[ois] - Build specified target only'
1115 @echo ' dir/file.ko - Build module including final link'
1116 @echo ' rpm - Build a kernel as an RPM package'
1117 @echo ' tags/TAGS - Generate tags file for editors'
1118 @echo ' cscope - Generate cscope index'
1119 @echo ' kernelrelease - Output the release version string'
1120 @echo ' kernelversion - Output the version stored in Makefile'
1121 @if [ -r include/asm-$(ARCH)/Kbuild ]; then \
1122 echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1124 @echo ' (default: $(INSTALL_HDR_PATH))'
1126 @echo 'Static analysers'
1127 @echo ' checkstack - Generate a list of stack hogs'
1128 @echo ' namespacecheck - Name space analysis on compiled kernel'
1129 @if [ -r include/asm-$(ARCH)/Kbuild ]; then \
1130 echo ' headers_check - Sanity check on exported headers'; \
1133 @echo 'Kernel packaging:'
1134 @$(MAKE) $(build)=$(package-dir) help
1136 @echo 'Documentation targets:'
1137 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1139 @echo 'Architecture specific targets ($(ARCH)):'
1140 @$(if $(archhelp),$(archhelp),\
1141 echo ' No architecture specific help defined for $(ARCH)')
1144 $(foreach b, $(boards), \
1145 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1148 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1149 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1150 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1151 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1152 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1154 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1155 @echo 'For further info see the ./README file'
1158 # Documentation targets
1159 # ---------------------------------------------------------------------------
1160 %docs: scripts_basic FORCE
1161 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1163 else # KBUILD_EXTMOD
1166 # External module support.
1167 # When building external modules the kernel used as basis is considered
1168 # read-only, and no consistency checks are made and the make
1169 # system is not used on the basis kernel. If updates are required
1170 # in the basis kernel ordinary make commands (without M=...) must
1173 # The following are the only valid targets when building external
1175 # make M=dir clean Delete all automatically generated files
1176 # make M=dir modules Make all modules in specified dir
1177 # make M=dir Same as 'make M=dir modules'
1178 # make M=dir modules_install
1179 # Install the modules built in the module directory
1180 # Assumes install directory is already created
1182 # We are always building modules
1184 PHONY += crmodverdir
1186 $(Q)mkdir -p $(MODVERDIR)
1187 $(Q)rm -f $(MODVERDIR)/*
1189 PHONY += $(objtree)/Module.symvers
1190 $(objtree)/Module.symvers:
1191 @test -e $(objtree)/Module.symvers || ( \
1193 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1194 echo " is missing; modules will have no dependencies and modversions."; \
1197 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1198 PHONY += $(module-dirs) modules
1199 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1200 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1202 modules: $(module-dirs)
1203 @echo ' Building modules, stage 2.';
1204 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1206 PHONY += modules_install
1207 modules_install: _emodinst_ _emodinst_post
1209 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1212 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1213 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1215 # Run depmod only is we have System.map and depmod is executable
1216 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1217 cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \
1218 $(DEPMOD) -ae -F System.map \
1219 $(if $(strip $(INSTALL_MOD_PATH)), \
1220 -b $(INSTALL_MOD_PATH) -r) \
1224 PHONY += _emodinst_post
1225 _emodinst_post: _emodinst_
1228 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1230 PHONY += $(clean-dirs) clean
1232 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1234 clean: rm-dirs := $(MODVERDIR)
1235 clean: $(clean-dirs)
1237 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1238 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1239 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1240 -type f -print | xargs rm -f
1243 @echo ' Building external modules.'
1244 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1246 @echo ' modules - default target, build the module(s)'
1247 @echo ' modules_install - install the module'
1248 @echo ' clean - remove generated files in module directory only'
1252 PHONY += prepare scripts
1255 endif # KBUILD_EXTMOD
1257 # Generate tags for editors
1258 # ---------------------------------------------------------------------------
1260 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
1261 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
1262 #Adding $(srctree) adds about 20M on i386 to the size of the output file!
1264 ifeq ($(src),$(obj))
1267 __srctree = $(srctree)/
1270 ifeq ($(ALLSOURCE_ARCHS),)
1272 ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
1274 ALLINCLUDE_ARCHS := $(ARCH)
1277 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour.
1278 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
1281 ALLSOURCE_ARCHS := $(ARCH)
1284 ( find $(__srctree) $(RCS_FIND_IGNORE) \
1285 \( -name include -o -name arch \) -prune -o \
1287 for ARCH in $(ALLSOURCE_ARCHS) ; do \
1288 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
1291 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
1293 find $(__srctree)include $(RCS_FIND_IGNORE) \
1294 \( -name config -o -name 'asm-*' \) -prune \
1295 -o -name $1 -print; \
1296 for ARCH in $(ALLINCLUDE_ARCHS) ; do \
1297 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
1300 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
1305 $(call find-sources,'*.[chS]')
1308 $(call find-sources,'Kconfig*')
1310 define all-defconfigs
1311 $(call find-sources,'defconfig')
1315 if $1 --version 2>&1 | grep -iq exuberant; then \
1316 $(all-sources) | xargs $1 -a \
1317 -I __initdata,__exitdata,__acquires,__releases \
1318 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1319 --extra=+f --c-kinds=+px; \
1320 $(all-kconfigs) | xargs $1 -a \
1322 --language-force=kconfig \
1323 --regex-kconfig='/^[[:blank:]]*config[[:blank:]]+([[:alnum:]_]+)/\1/'; \
1324 $(all-defconfigs) | xargs $1 -a \
1325 --langdef=dotconfig \
1326 --language-force=dotconfig \
1327 --regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'; \
1328 elif $1 --version 2>&1 | grep -iq emacs; then \
1329 $(all-sources) | xargs $1 -a; \
1330 $(all-kconfigs) | xargs $1 -a \
1331 --regex='/^[ \t]*config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
1332 $(all-defconfigs) | xargs $1 -a \
1333 --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
1335 $(all-sources) | xargs $1 -a; \
1339 quiet_cmd_cscope-file = FILELST cscope.files
1340 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
1342 quiet_cmd_cscope = MAKE cscope.out
1343 cmd_cscope = cscope -b
1346 $(call cmd,cscope-file)
1349 quiet_cmd_TAGS = MAKE $@
1358 quiet_cmd_tags = MAKE $@
1368 # Scripts to check various things for consistency
1369 # ---------------------------------------------------------------------------
1372 find * $(RCS_FIND_IGNORE) \
1373 -name '*.[hcS]' -type f -print | sort \
1374 | xargs $(PERL) -w scripts/checkincludes.pl
1377 find * $(RCS_FIND_IGNORE) \
1378 -name '*.[hcS]' -type f -print | sort \
1379 | xargs $(PERL) -w scripts/checkversion.pl
1382 $(PERL) $(srctree)/scripts/namespace.pl
1384 endif #ifeq ($(config-targets),1)
1385 endif #ifeq ($(mixed-targets),1)
1387 PHONY += checkstack kernelrelease kernelversion
1389 # Use $(SUBARCH) here instead of $(ARCH) so that this works for UML.
1390 # In the UML case, $(SUBARCH) is the name of the underlying
1391 # architecture, while for all other arches, it is the same as $(ARCH).
1393 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1394 $(PERL) $(src)/scripts/checkstack.pl $(SUBARCH)
1397 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
1398 $(error kernelrelease not valid - run 'make prepare' to update it))
1400 @echo $(KERNELVERSION)
1403 # ---------------------------------------------------------------------------
1404 # Single targets are compatible with:
1405 # - build whith mixed source and output
1406 # - build with separate output dir 'make O=...'
1407 # - external modules
1409 # target-dir => where to store outputfile
1410 # build-dir => directory in kernel source tree to use
1412 ifeq ($(KBUILD_EXTMOD),)
1413 build-dir = $(patsubst %/,%,$(dir $@))
1414 target-dir = $(dir $@)
1416 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1417 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1418 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1421 %.s: %.c prepare scripts FORCE
1422 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1423 %.i: %.c prepare scripts FORCE
1424 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1425 %.o: %.c prepare scripts FORCE
1426 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1427 %.lst: %.c prepare scripts FORCE
1428 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1429 %.s: %.S prepare scripts FORCE
1430 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1431 %.o: %.S prepare scripts FORCE
1432 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1433 %.symtypes: %.c prepare scripts FORCE
1434 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1437 / %/: prepare scripts FORCE
1438 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1439 $(build)=$(build-dir)
1440 %.ko: prepare scripts FORCE
1441 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1442 $(build)=$(build-dir) $(@:.ko=.o)
1443 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1445 # FIXME Should go into a make.lib or something
1446 # ===========================================================================
1448 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1449 cmd_rmdirs = rm -rf $(rm-dirs)
1451 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1452 cmd_rmfiles = rm -f $(rm-files)
1455 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
1456 $(NOSTDINC_FLAGS) $(CPPFLAGS) \
1457 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
1459 quiet_cmd_as_o_S = AS $@
1460 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1462 # read all saved command lines
1464 targets := $(wildcard $(sort $(targets)))
1465 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1467 ifneq ($(cmd_files),)
1468 $(cmd_files): ; # Do not try to update included dependency files
1469 include $(cmd_files)
1472 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1474 # $(Q)$(MAKE) $(clean)=dir
1475 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1477 endif # skip-makefile
1483 # Declare the contents of the .PHONY variable as phony. We keep that
1484 # information in a variable se we can use it in if_changed and friends.