5 NAME = TOSSUG Baby Fish
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.
14 # o use make's built-in rules and variables
15 # (this increases performance and avoids hard-to-debug behaviour);
16 # o print "Entering directory ...";
17 MAKEFLAGS += -rR --no-print-directory
19 # Avoid funny character set dependencies
23 export LC_COLLATE LC_NUMERIC
25 # We are using a recursive build, so we need to do a little thinking
26 # to get the ordering right.
28 # Most importantly: sub-Makefiles should only ever modify files in
29 # their own directory. If in some directory we have a dependency on
30 # a file in another dir (which doesn't happen often, but it's often
31 # unavoidable when linking the built-in.o targets which finally
32 # turn into vmlinux), we will call a sub make in that other dir, and
33 # after that we are sure that everything which is in that other dir
36 # The only cases where we need to modify files which have global
37 # effects are thus separated out and done before the recursive
38 # descending is started. They are now explicitly listed as the
41 # To put more focus on warnings, be less verbose as default
42 # Use 'make V=1' to see the full commands
44 ifeq ("$(origin V)", "command line")
51 # Call a source code checker (by default, "sparse") as part of the
54 # Use 'make C=1' to enable checking of only re-compiled files.
55 # Use 'make C=2' to enable checking of *all* source files, regardless
56 # of whether they are re-compiled or not.
58 # See the file "Documentation/sparse.txt" for more details, including
59 # where to get the "sparse" utility.
61 ifeq ("$(origin C)", "command line")
62 KBUILD_CHECKSRC = $(C)
64 ifndef KBUILD_CHECKSRC
68 # Use make M=dir to specify directory of external module to build
69 # Old syntax make ... SUBDIRS=$PWD is still supported
70 # Setting the environment variable KBUILD_EXTMOD take precedence
72 KBUILD_EXTMOD ?= $(SUBDIRS)
75 ifeq ("$(origin M)", "command line")
79 # kbuild supports saving output files in a separate directory.
80 # To locate output files in a separate directory two syntaxes are supported.
81 # In both cases the working directory must be the root of the kernel src.
83 # Use "make O=dir/to/store/output/files/"
85 # 2) Set KBUILD_OUTPUT
86 # Set the environment variable KBUILD_OUTPUT to point to the directory
87 # where the output files shall be placed.
88 # export KBUILD_OUTPUT=dir/to/store/output/files/
91 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
95 # KBUILD_SRC is set on invocation of make in OBJ directory
96 # KBUILD_SRC is not intended to be used by the regular user (for now)
99 # OK, Make called in directory where kernel src resides
100 # Do we want to locate output files in a separate directory?
101 ifeq ("$(origin O)", "command line")
102 KBUILD_OUTPUT := $(O)
105 ifeq ("$(origin W)", "command line")
106 export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
109 # That's our default target when none is given on the command line
113 # Cancel implicit rules on top Makefile
114 $(CURDIR)/Makefile Makefile: ;
116 ifneq ($(KBUILD_OUTPUT),)
117 # Invoke a second make in the output directory, passing relevant variables
118 # check that the output directory actually exists
119 saved-output := $(KBUILD_OUTPUT)
120 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
121 $(if $(KBUILD_OUTPUT),, \
122 $(error output directory "$(saved-output)" does not exist))
124 PHONY += $(MAKECMDGOALS) sub-make
126 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
130 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
131 KBUILD_SRC=$(CURDIR) \
132 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
133 $(filter-out _all sub-make,$(MAKECMDGOALS))
135 # Leave processing to above invocation of make
137 endif # ifneq ($(KBUILD_OUTPUT),)
138 endif # ifeq ($(KBUILD_SRC),)
140 # We process the rest of the Makefile if this is the final invocation of make
141 ifeq ($(skip-makefile),)
143 # If building an external module we do not care about the all: rule
144 # but instead _all depend on modules
146 ifeq ($(KBUILD_EXTMOD),)
152 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
157 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
159 export srctree objtree VPATH
162 # SUBARCH tells the usermode build what the underlying arch is. That is set
163 # first, and if a usermode build is happening, the "ARCH=um" on the command
164 # line overrides the setting of ARCH below. If a native build is happening,
165 # then ARCH is assigned, getting whatever value it gets normally, and
166 # SUBARCH is subsequently ignored.
168 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
169 -e s/sun4u/sparc64/ \
170 -e s/arm.*/arm/ -e s/sa110/arm/ \
171 -e s/s390x/s390/ -e s/parisc64/parisc/ \
172 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
173 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )
175 # Cross compiling and selecting different set of gcc/bin-utils
176 # ---------------------------------------------------------------------------
178 # When performing cross compilation for other architectures ARCH shall be set
179 # to the target architecture. (See arch/* for the possibilities).
180 # ARCH can be set during invocation of make:
182 # Another way is to have ARCH set in the environment.
183 # The default ARCH is the host where make is executed.
185 # CROSS_COMPILE specify the prefix used for all executables used
186 # during compilation. Only gcc and related bin-utils executables
187 # are prefixed with $(CROSS_COMPILE).
188 # CROSS_COMPILE can be set on the command line
189 # make CROSS_COMPILE=ia64-linux-
190 # Alternatively CROSS_COMPILE can be set in the environment.
191 # A third alternative is to store a setting in .config so that plain
192 # "make" in the configured kernel build directory always uses that.
193 # Default value for CROSS_COMPILE is not to prefix executables
194 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
196 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
198 # Architecture as present in compile.h
199 UTS_MACHINE := $(ARCH)
202 # Additional ARCH settings for x86
206 ifeq ($(ARCH),x86_64)
210 # Additional ARCH settings for sparc
211 ifeq ($(ARCH),sparc32)
214 ifeq ($(ARCH),sparc64)
218 # Additional ARCH settings for sh
223 # Additional ARCH settings for tile
224 ifeq ($(ARCH),tilepro)
227 ifeq ($(ARCH),tilegx)
231 # Where to locate arch specific headers
232 hdr-arch := $(SRCARCH)
234 KCONFIG_CONFIG ?= .config
235 export KCONFIG_CONFIG
237 # SHELL used by kbuild
238 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
239 else if [ -x /bin/bash ]; then echo /bin/bash; \
240 else echo sh; fi ; fi)
244 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89
247 # Decide whether to build built-in, modular, or both.
248 # Normally, just do built-in.
253 # If we have only "make modules", don't compile built-in objects.
254 # When we're building modules with modversions, we need to consider
255 # the built-in objects during the descend as well, in order to
256 # make sure the checksums are up to date before we record them.
258 ifeq ($(MAKECMDGOALS),modules)
259 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
262 # If we have "make <whatever> modules", compile modules
263 # in addition to whatever we do anyway.
264 # Just "make" or "make all" shall build modules as well
266 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
270 ifeq ($(MAKECMDGOALS),)
274 export KBUILD_MODULES KBUILD_BUILTIN
275 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
278 # ---------------------------------------------------------------------------
280 # Normally, we echo the whole command before executing it. By making
281 # that echo $($(quiet)$(cmd)), we now have the possibility to set
282 # $(quiet) to choose other forms of output instead, e.g.
284 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
285 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
287 # If $(quiet) is empty, the whole command will be printed.
288 # If it is set to "quiet_", only the short version will be printed.
289 # If it is set to "silent_", nothing will be printed at all, since
290 # the variable $(silent_cmd_cc_o_c) doesn't exist.
292 # A simple variant is to prefix commands with $(Q) - that's useful
293 # for commands that shall be hidden in non-verbose mode.
297 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
298 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
300 ifeq ($(KBUILD_VERBOSE),1)
308 # If the user is running make -s (silent mode), suppress echoing of
311 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
315 export quiet Q KBUILD_VERBOSE
318 # Look for make include files relative to root of kernel src
319 MAKEFLAGS += --include-dir=$(srctree)
321 # We need some generic definitions (do not try to remake the file).
322 $(srctree)/scripts/Kbuild.include: ;
323 include $(srctree)/scripts/Kbuild.include
325 # Make variables (CC, etc...)
327 AS = $(CROSS_COMPILE)as
328 LD = $(CROSS_COMPILE)ld
329 CC = $(CROSS_COMPILE)gcc
331 AR = $(CROSS_COMPILE)ar
332 NM = $(CROSS_COMPILE)nm
333 STRIP = $(CROSS_COMPILE)strip
334 OBJCOPY = $(CROSS_COMPILE)objcopy
335 OBJDUMP = $(CROSS_COMPILE)objdump
337 GENKSYMS = scripts/genksyms/genksyms
338 INSTALLKERNEL := installkernel
339 DEPMOD = /sbin/depmod
343 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
344 -Wbitwise -Wno-return-void $(CF)
350 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
353 # Use USERINCLUDE when you must reference the UAPI directories only.
355 -I$(srctree)/arch/$(hdr-arch)/include/uapi \
356 -Iarch/$(hdr-arch)/include/generated/uapi \
357 -I$(srctree)/include/uapi \
358 -Iinclude/generated/uapi \
359 -include $(srctree)/include/linux/kconfig.h
361 # Use LINUXINCLUDE when you must reference the include/ directory.
362 # Needed to be compatible with the O= option
364 -I$(srctree)/arch/$(hdr-arch)/include \
365 -Iarch/$(hdr-arch)/include/generated \
366 $(if $(KBUILD_SRC), -I$(srctree)/include) \
370 KBUILD_CPPFLAGS := -D__KERNEL__
372 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
373 -fno-strict-aliasing -fno-common \
374 -Werror-implicit-function-declaration \
375 -Wno-format-security \
376 -fno-delete-null-pointer-checks \
378 KBUILD_AFLAGS_KERNEL :=
379 KBUILD_CFLAGS_KERNEL :=
380 KBUILD_AFLAGS := -D__ASSEMBLY__
381 KBUILD_AFLAGS_MODULE := -DMODULE
382 KBUILD_CFLAGS_MODULE := -DMODULE
383 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
385 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
386 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
387 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
389 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
390 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
391 export CPP AR NM STRIP OBJCOPY OBJDUMP
392 export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE
393 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
395 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
396 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
397 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
398 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
399 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
400 export KBUILD_ARFLAGS
402 # When compiling out-of-tree modules, put MODVERDIR in the module
403 # tree rather than in the kernel tree. The kernel tree might
405 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
407 # Files to ignore in find ... statements
409 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \
410 -o -name .pc -o -name .hg -o -name .git \) -prune -o
411 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
412 --exclude CVS --exclude .pc --exclude .hg --exclude .git
414 # ===========================================================================
415 # Rules shared between *config targets and build targets
417 # Basic helpers built in scripts/
418 PHONY += scripts_basic
420 $(Q)$(MAKE) $(build)=scripts/basic
421 $(Q)rm -f .tmp_quiet_recordmcount
423 # To avoid any implicit rule to kick in, define an empty command.
424 scripts/basic/%: scripts_basic ;
426 PHONY += outputmakefile
427 # outputmakefile generates a Makefile in the output directory, if using a
428 # separate output directory. This allows convenient use of make in the
431 ifneq ($(KBUILD_SRC),)
432 $(Q)ln -fsn $(srctree) source
433 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
434 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
437 # Support for using generic headers in asm-generic
440 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
441 src=asm obj=arch/$(SRCARCH)/include/generated/asm
442 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
443 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
445 # To make sure we do not include .config for any of the *config targets
446 # catch them early, and hand them over to scripts/kconfig/Makefile
447 # It is allowed to specify more targets when calling make, including
448 # mixing *config targets and build targets.
449 # For example 'make oldconfig all'.
450 # Detect when mixed targets is specified, and make a second invocation
451 # of make so .config is not included in this case either (for *config).
453 version_h := include/generated/uapi/linux/version.h
455 no-dot-config-targets := clean mrproper distclean \
456 cscope gtags TAGS tags help %docs check% coccicheck \
457 $(version_h) headers_% archheaders archscripts \
458 kernelversion %src-pkg
464 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
465 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
470 ifeq ($(KBUILD_EXTMOD),)
471 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
473 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
479 ifeq ($(mixed-targets),1)
480 # ===========================================================================
481 # We're called with mixed targets (*config and build targets).
482 # Handle them one by one.
485 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
488 ifeq ($(config-targets),1)
489 # ===========================================================================
490 # *config targets only - make sure prerequisites are updated, and descend
491 # in scripts/kconfig to make the *config target
493 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
494 # KBUILD_DEFCONFIG may point out an alternative default configuration
495 # used for 'make defconfig'
496 include $(srctree)/arch/$(SRCARCH)/Makefile
497 export KBUILD_DEFCONFIG KBUILD_KCONFIG
499 config: scripts_basic outputmakefile FORCE
500 $(Q)mkdir -p include/linux include/config
501 $(Q)$(MAKE) $(build)=scripts/kconfig $@
503 %config: scripts_basic outputmakefile FORCE
504 $(Q)mkdir -p include/linux include/config
505 $(Q)$(MAKE) $(build)=scripts/kconfig $@
508 # ===========================================================================
509 # Build targets only - this includes vmlinux, arch specific targets, clean
510 # targets and others. In general all targets except *config targets.
512 ifeq ($(KBUILD_EXTMOD),)
513 # Additional helpers built in scripts/
514 # Carefully list dependencies so we do not try to build scripts twice
517 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
519 $(Q)$(MAKE) $(build)=$(@)
521 # Objects we will link into vmlinux / subdirs we need to visit
523 drivers-y := drivers/ sound/ firmware/
527 endif # KBUILD_EXTMOD
529 ifeq ($(dot-config),1)
531 -include include/config/auto.conf
533 ifeq ($(KBUILD_EXTMOD),)
534 # Read in dependencies to all Kconfig* files, make sure to run
535 # oldconfig if changes are detected.
536 -include include/config/auto.conf.cmd
538 # To avoid any implicit rule to kick in, define an empty command
539 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
541 # If .config is newer than include/config/auto.conf, someone tinkered
542 # with it and forgot to run make oldconfig.
543 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
544 # we execute the config step to be sure to catch updated Kconfig files
545 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
546 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
548 # external modules needs include/generated/autoconf.h and include/config/auto.conf
549 # but do not care if they are up-to-date. Use auto.conf to trigger the test
550 PHONY += include/config/auto.conf
552 include/config/auto.conf:
553 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \
555 echo >&2 " ERROR: Kernel configuration is invalid."; \
556 echo >&2 " include/generated/autoconf.h or $@ are missing.";\
557 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
561 endif # KBUILD_EXTMOD
564 # Dummy target needed, because used as prerequisite
565 include/config/auto.conf: ;
566 endif # $(dot-config)
568 # The all: target is the default when no target is given on the
570 # This allow a user to issue only 'make' to build a kernel including modules
571 # Defaults to vmlinux, but the arch makefile usually adds further targets
574 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation)
575 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow)
576 KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context)
578 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
579 KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
584 include $(srctree)/arch/$(SRCARCH)/Makefile
586 ifdef CONFIG_READABLE_ASM
587 # Disable optimizations that make assembler listings hard to read.
588 # reorder blocks reorders the control in the function
589 # ipa clone creates specialized cloned functions
590 # partial inlining inlines only parts of functions
591 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
592 $(call cc-option,-fno-ipa-cp-clone,) \
593 $(call cc-option,-fno-partial-inlining)
596 ifneq ($(CONFIG_FRAME_WARN),0)
597 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
600 # Force gcc to behave correct even for buggy distributions
601 ifndef CONFIG_CC_STACKPROTECTOR
602 KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
605 # These warnings generated too much noise in a regular build.
606 # Use make W=1 to enable them (see scripts/Makefile.build)
607 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
608 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
610 ifdef CONFIG_FRAME_POINTER
611 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
613 # Some targets (ARM with Thumb2, for example), can't be built with frame
614 # pointers. For those, we don't have FUNCTION_TRACER automatically
615 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is
616 # incompatible with -fomit-frame-pointer with current GCC, so we don't use
617 # -fomit-frame-pointer with FUNCTION_TRACER.
618 ifndef CONFIG_FUNCTION_TRACER
619 KBUILD_CFLAGS += -fomit-frame-pointer
623 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments)
625 ifdef CONFIG_DEBUG_INFO
627 KBUILD_AFLAGS += -gdwarf-2
630 ifdef CONFIG_DEBUG_INFO_REDUCED
631 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
632 $(call cc-option,-fno-var-tracking)
635 ifdef CONFIG_FUNCTION_TRACER
636 ifdef CONFIG_HAVE_FENTRY
637 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
639 KBUILD_CFLAGS += -pg $(CC_USING_FENTRY)
640 KBUILD_AFLAGS += $(CC_USING_FENTRY)
641 ifdef CONFIG_DYNAMIC_FTRACE
642 ifdef CONFIG_HAVE_C_RECORDMCOUNT
643 BUILD_C_RECORDMCOUNT := y
644 export BUILD_C_RECORDMCOUNT
649 # We trigger additional mismatches with less inlining
650 ifdef CONFIG_DEBUG_SECTION_MISMATCH
651 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
654 # arch Makefile may override CC so keep this after arch Makefile is included
655 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
656 CHECKFLAGS += $(NOSTDINC_FLAGS)
658 # warn about C99 declaration after statement
659 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
661 # disable pointer signed / unsigned warnings in gcc 4.0
662 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
664 # disable invalid "can't wrap" optimizations for signed / pointers
665 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
667 # conserve stack if available
668 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
670 # use the deterministic mode of AR if available
671 KBUILD_ARFLAGS := $(call ar-option,D)
673 # check for 'asm goto'
674 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
675 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
678 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
679 KBUILD_CPPFLAGS += $(KCPPFLAGS)
680 KBUILD_AFLAGS += $(KAFLAGS)
681 KBUILD_CFLAGS += $(KCFLAGS)
683 # Use --build-id when available.
684 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
685 $(call cc-ldoption, -Wl$(comma)--build-id,))
686 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
687 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
689 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
690 LDFLAGS_vmlinux += $(call ld-option, -X,)
693 # Default kernel image to build when no specific target is given.
694 # KBUILD_IMAGE may be overruled on the command line or
695 # set in the environment
696 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
698 export KBUILD_IMAGE ?= vmlinux
701 # INSTALL_PATH specifies where to place the updated kernel and system map
702 # images. Default is /boot, but you can set it to other values
703 export INSTALL_PATH ?= /boot
706 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
707 # relocations required by build roots. This is not defined in the
708 # makefile but the argument can be passed to make if needed.
711 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
715 # INSTALL_MOD_STRIP, if defined, will cause modules to be
716 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
717 # the default option --strip-debug will be used. Otherwise,
718 # INSTALL_MOD_STRIP value will be used as the options to the strip command.
720 ifdef INSTALL_MOD_STRIP
721 ifeq ($(INSTALL_MOD_STRIP),1)
722 mod_strip_cmd = $(STRIP) --strip-debug
724 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
725 endif # INSTALL_MOD_STRIP=1
728 endif # INSTALL_MOD_STRIP
732 ifdef CONFIG_MODULE_SIG_ALL
733 MODSECKEY = ./signing_key.priv
734 MODPUBKEY = ./signing_key.x509
736 mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY)
743 ifeq ($(KBUILD_EXTMOD),)
744 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
746 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
747 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
748 $(net-y) $(net-m) $(libs-y) $(libs-m)))
750 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
752 $(core-n) $(core-) $(drivers-n) $(drivers-) \
753 $(net-n) $(net-) $(libs-n) $(libs-))))
755 init-y := $(patsubst %/, %/built-in.o, $(init-y))
756 core-y := $(patsubst %/, %/built-in.o, $(core-y))
757 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
758 net-y := $(patsubst %/, %/built-in.o, $(net-y))
759 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
760 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
761 libs-y := $(libs-y1) $(libs-y2)
763 # Externally visible symbols (used by link-vmlinux.sh)
764 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
765 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y)
766 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
767 export LDFLAGS_vmlinux
768 # used by scripts/pacmage/Makefile
769 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt)
771 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)
773 # Final link of vmlinux
774 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux)
775 quiet_cmd_link-vmlinux = LINK $@
777 # Include targets which we want to
778 # execute if the rest of the kernel build went well.
779 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE
780 ifdef CONFIG_HEADERS_CHECK
781 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
784 $(Q)$(MAKE) $(build)=samples
786 ifdef CONFIG_BUILD_DOCSRC
787 $(Q)$(MAKE) $(build)=Documentation
789 +$(call if_changed,link-vmlinux)
791 # The actual objects are generated when descending,
792 # make sure no implicit rule kicks in
793 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
795 # Handle descending into subdirectories listed in $(vmlinux-dirs)
796 # Preset locale variables to speed up the build process. Limit locale
797 # tweaks to this spot to avoid wrong language settings when running
798 # make menuconfig etc.
799 # Error messages still appears in the original language
801 PHONY += $(vmlinux-dirs)
802 $(vmlinux-dirs): prepare scripts
803 $(Q)$(MAKE) $(build)=$@
805 # Store (new) KERNELRELASE string in include/config/kernel.release
806 include/config/kernel.release: include/config/auto.conf FORCE
808 $(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@
811 # Things we need to do before we recursively start building the kernel
812 # or the modules are listed in "prepare".
813 # A multi level approach is used. prepareN is processed before prepareN-1.
814 # archprepare is used in arch Makefiles and when processed asm symlink,
815 # version.h and scripts_basic is processed / created.
817 # Listed in dependency order
818 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
820 # prepare3 is used to check if we are building in a separate output directory,
822 # 1) Check that make has not been executed in the kernel src $(srctree)
823 prepare3: include/config/kernel.release
824 ifneq ($(KBUILD_SRC),)
825 @$(kecho) ' Using $(srctree) as source for kernel'
826 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
827 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
828 echo >&2 " in the '$(srctree)' directory.";\
833 # prepare2 creates a makefile if using a separate output directory
834 prepare2: prepare3 outputmakefile asm-generic
836 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
837 include/config/auto.conf
840 archprepare: archheaders archscripts prepare1 scripts_basic
842 prepare0: archprepare FORCE
843 $(Q)$(MAKE) $(build)=.
845 # All the preparing..
848 # Generate some files
849 # ---------------------------------------------------------------------------
851 # KERNELRELEASE can change from a few different places, meaning version.h
852 # needs to be updated, so this check is forced on all builds
855 define filechk_utsrelease.h
856 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
857 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
860 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
863 define filechk_version.h
864 (echo \#define LINUX_VERSION_CODE $(shell \
865 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
866 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
869 $(version_h): $(srctree)/Makefile FORCE
870 $(call filechk,version.h)
872 include/generated/utsrelease.h: include/config/kernel.release FORCE
873 $(call filechk,utsrelease.h)
877 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
878 $(srctree)/scripts/headerdep.pl -I$(srctree)/include
880 # ---------------------------------------------------------------------------
884 @echo '*** Warning: make $@ is unnecessary now.'
886 # ---------------------------------------------------------------------------
888 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
889 export INSTALL_FW_PATH
891 PHONY += firmware_install
892 firmware_install: FORCE
893 @mkdir -p $(objtree)/firmware
894 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
896 # ---------------------------------------------------------------------------
899 #Default location for installed headers
900 export INSTALL_HDR_PATH = $(objtree)/usr
902 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
904 # If we do an all arch process set dst to asm-$(hdr-arch)
905 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
914 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
915 $(Q)$(MAKE) $(build)=scripts build_unifdef
917 PHONY += headers_install_all
919 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
921 PHONY += headers_install
922 headers_install: __headers
923 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
924 $(error Headers not exportable for the $(SRCARCH) architecture))
925 $(Q)$(MAKE) $(hdr-inst)=include/uapi
926 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst)
928 PHONY += headers_check_all
929 headers_check_all: headers_install_all
930 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
932 PHONY += headers_check
933 headers_check: headers_install
934 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
935 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
937 # ---------------------------------------------------------------------------
942 # By default, build modules as well
948 # A module can be listed more than once in obj-m resulting in
949 # duplicate lines in modules.order files. Those are removed
950 # using awk while concatenating to the final file.
953 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
954 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
955 @$(kecho) ' Building modules, stage 2.';
956 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
957 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
959 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
960 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
962 %/modules.builtin: include/config/auto.conf
963 $(Q)$(MAKE) $(modbuiltin)=$*
966 # Target to prepare building external modules
967 PHONY += modules_prepare
968 modules_prepare: prepare scripts
970 # Target to install modules
971 PHONY += modules_install
972 modules_install: _modinst_ _modinst_post
976 @rm -rf $(MODLIB)/kernel
977 @rm -f $(MODLIB)/source
978 @mkdir -p $(MODLIB)/kernel
979 @ln -s $(srctree) $(MODLIB)/source
980 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
981 rm -f $(MODLIB)/build ; \
982 ln -s $(objtree) $(MODLIB)/build ; \
984 @cp -f $(objtree)/modules.order $(MODLIB)/
985 @cp -f $(objtree)/modules.builtin $(MODLIB)/
986 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
988 # This depmod is only for convenience to give the initial
989 # boot a modules.dep even before / is mounted read-write. However the
990 # boot script depmod is the master version.
991 PHONY += _modinst_post
992 _modinst_post: _modinst_
993 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
996 ifeq ($(CONFIG_MODULE_SIG), y)
997 PHONY += modules_sign
999 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
1002 else # CONFIG_MODULES
1004 # Modules not configured
1005 # ---------------------------------------------------------------------------
1007 modules modules_install: FORCE
1009 @echo >&2 "The present kernel configuration has modules disabled."
1010 @echo >&2 "Type 'make config' and enable loadable module support."
1011 @echo >&2 "Then build a kernel with module support enabled."
1015 endif # CONFIG_MODULES
1018 # Cleaning is done on three levels.
1019 # make clean Delete most generated files
1020 # Leave enough to build external modules
1021 # make mrproper Delete the current configuration, and all generated files
1022 # make distclean Remove editor backup files, patch leftover files and the like
1024 # Directories & files removed with 'make clean'
1025 CLEAN_DIRS += $(MODVERDIR)
1027 # Directories & files removed with 'make mrproper'
1028 MRPROPER_DIRS += include/config usr/include include/generated \
1029 arch/*/include/generated
1030 MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
1031 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1032 signing_key.priv signing_key.x509 x509.genkey \
1033 extra_certificates signing_key.x509.keyid \
1034 signing_key.x509.signer
1036 # clean - Delete most, but leave enough to build external modules
1038 clean: rm-dirs := $(CLEAN_DIRS)
1039 clean: rm-files := $(CLEAN_FILES)
1040 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
1042 PHONY += $(clean-dirs) clean archclean vmlinuxclean
1044 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1047 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
1049 clean: archclean vmlinuxclean
1051 # mrproper - Delete all generated files, including .config
1053 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1054 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1055 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1057 PHONY += $(mrproper-dirs) mrproper archmrproper
1059 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1061 mrproper: clean archmrproper $(mrproper-dirs)
1070 @find $(srctree) $(RCS_FIND_IGNORE) \
1071 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1072 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1074 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1075 -type f -print | xargs rm -f
1078 # Packaging of the kernel to various formats
1079 # ---------------------------------------------------------------------------
1080 # rpm target kept for backward compatibility
1081 package-dir := $(srctree)/scripts/package
1084 $(Q)$(MAKE) $(build)=$(package-dir) $@
1085 %pkg: include/config/kernel.release FORCE
1086 $(Q)$(MAKE) $(build)=$(package-dir) $@
1087 rpm: include/config/kernel.release FORCE
1088 $(Q)$(MAKE) $(build)=$(package-dir) $@
1091 # Brief documentation of the typical targets used
1092 # ---------------------------------------------------------------------------
1094 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1095 boards := $(notdir $(boards))
1096 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1097 board-dirs := $(sort $(notdir $(board-dirs:/=)))
1100 @echo 'Cleaning targets:'
1101 @echo ' clean - Remove most generated files but keep the config and'
1102 @echo ' enough build support to build external modules'
1103 @echo ' mrproper - Remove all generated files + config + various backup files'
1104 @echo ' distclean - mrproper + remove editor backup and patch files'
1106 @echo 'Configuration targets:'
1107 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1109 @echo 'Other generic targets:'
1110 @echo ' all - Build all targets marked with [*]'
1111 @echo '* vmlinux - Build the bare kernel'
1112 @echo '* modules - Build all modules'
1113 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1114 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1115 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1116 @echo ' dir/ - Build all files in dir and below'
1117 @echo ' dir/file.[oisS] - Build specified target only'
1118 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1119 @echo ' (requires a recent binutils and recent build (System.map))'
1120 @echo ' dir/file.ko - Build module including final link'
1121 @echo ' modules_prepare - Set up for building external modules'
1122 @echo ' tags/TAGS - Generate tags file for editors'
1123 @echo ' cscope - Generate cscope index'
1124 @echo ' gtags - Generate GNU GLOBAL index'
1125 @echo ' kernelrelease - Output the release version string'
1126 @echo ' kernelversion - Output the version stored in Makefile'
1127 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1128 echo ' (default: $(INSTALL_HDR_PATH))'; \
1130 @echo 'Static analysers'
1131 @echo ' checkstack - Generate a list of stack hogs'
1132 @echo ' namespacecheck - Name space analysis on compiled kernel'
1133 @echo ' versioncheck - Sanity check on version.h usage'
1134 @echo ' includecheck - Check for duplicate included header files'
1135 @echo ' export_report - List the usages of all exported symbols'
1136 @echo ' headers_check - Sanity check on exported headers'
1137 @echo ' headerdep - Detect inclusion cycles in headers'
1138 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
1140 @echo 'Kernel packaging:'
1141 @$(MAKE) $(build)=$(package-dir) help
1143 @echo 'Documentation targets:'
1144 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1146 @echo 'Architecture specific targets ($(SRCARCH)):'
1147 @$(if $(archhelp),$(archhelp),\
1148 echo ' No architecture specific help defined for $(SRCARCH)')
1151 $(foreach b, $(boards), \
1152 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1154 @$(if $(board-dirs), \
1155 $(foreach b, $(board-dirs), \
1156 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1157 printf " %-16s - Show all of the above\\n" help-boards; \
1160 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1161 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1162 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1163 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1164 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1165 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1166 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1167 @echo ' 1: warnings which may be relevant and do not occur too often'
1168 @echo ' 2: warnings which occur quite often but may still be relevant'
1169 @echo ' 3: more obscure warnings, can most likely be ignored'
1170 @echo ' Multiple levels can be combined with W=12 or W=123'
1172 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1173 @echo 'For further info see the ./README file'
1176 help-board-dirs := $(addprefix help-,$(board-dirs))
1178 help-boards: $(help-board-dirs)
1180 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
1182 $(help-board-dirs): help-%:
1183 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1184 @$(if $(boards-per-dir), \
1185 $(foreach b, $(boards-per-dir), \
1186 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1190 # Documentation targets
1191 # ---------------------------------------------------------------------------
1192 %docs: scripts_basic FORCE
1193 $(Q)$(MAKE) $(build)=scripts build_docproc
1194 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1196 else # KBUILD_EXTMOD
1199 # External module support.
1200 # When building external modules the kernel used as basis is considered
1201 # read-only, and no consistency checks are made and the make
1202 # system is not used on the basis kernel. If updates are required
1203 # in the basis kernel ordinary make commands (without M=...) must
1206 # The following are the only valid targets when building external
1208 # make M=dir clean Delete all automatically generated files
1209 # make M=dir modules Make all modules in specified dir
1210 # make M=dir Same as 'make M=dir modules'
1211 # make M=dir modules_install
1212 # Install the modules built in the module directory
1213 # Assumes install directory is already created
1215 # We are always building modules
1217 PHONY += crmodverdir
1221 PHONY += $(objtree)/Module.symvers
1222 $(objtree)/Module.symvers:
1223 @test -e $(objtree)/Module.symvers || ( \
1225 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1226 echo " is missing; modules will have no dependencies and modversions."; \
1229 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1230 PHONY += $(module-dirs) modules
1231 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1232 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1234 modules: $(module-dirs)
1235 @$(kecho) ' Building modules, stage 2.';
1236 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1238 PHONY += modules_install
1239 modules_install: _emodinst_ _emodinst_post
1241 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1244 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1245 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1247 PHONY += _emodinst_post
1248 _emodinst_post: _emodinst_
1251 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1253 PHONY += $(clean-dirs) clean
1255 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1257 clean: rm-dirs := $(MODVERDIR)
1258 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1261 @echo ' Building external modules.'
1262 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1264 @echo ' modules - default target, build the module(s)'
1265 @echo ' modules_install - install the module'
1266 @echo ' clean - remove generated files in module directory only'
1270 PHONY += prepare scripts
1273 endif # KBUILD_EXTMOD
1275 clean: $(clean-dirs)
1278 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1279 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1281 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1282 -o -name '*.symtypes' -o -name 'modules.order' \
1283 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1284 -o -name '*.gcno' \) -type f -print | xargs rm -f
1286 # Generate tags for editors
1287 # ---------------------------------------------------------------------------
1288 quiet_cmd_tags = GEN $@
1289 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1291 tags TAGS cscope gtags: FORCE
1294 # Scripts to check various things for consistency
1295 # ---------------------------------------------------------------------------
1297 PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1300 find $(srctree)/* $(RCS_FIND_IGNORE) \
1301 -name '*.[hcS]' -type f -print | sort \
1302 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1305 find $(srctree)/* $(RCS_FIND_IGNORE) \
1306 -name '*.[hcS]' -type f -print | sort \
1307 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1310 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1313 $(PERL) $(srctree)/scripts/namespace.pl
1316 $(PERL) $(srctree)/scripts/export_report.pl
1318 endif #ifeq ($(config-targets),1)
1319 endif #ifeq ($(mixed-targets),1)
1321 PHONY += checkstack kernelrelease kernelversion
1323 # UML needs a little special treatment here. It wants to use the host
1324 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1325 # else wants $(ARCH), including people doing cross-builds, which means
1326 # that $(SUBARCH) doesn't work here.
1328 CHECKSTACK_ARCH := $(SUBARCH)
1330 CHECKSTACK_ARCH := $(ARCH)
1333 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1334 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1337 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1340 @echo $(KERNELVERSION)
1342 # Clear a bunch of variables before executing the submake
1344 $(Q)mkdir -p $(objtree)/tools
1345 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/
1348 $(Q)mkdir -p $(objtree)/tools
1349 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $*
1352 # ---------------------------------------------------------------------------
1353 # Single targets are compatible with:
1354 # - build with mixed source and output
1355 # - build with separate output dir 'make O=...'
1356 # - external modules
1358 # target-dir => where to store outputfile
1359 # build-dir => directory in kernel source tree to use
1361 ifeq ($(KBUILD_EXTMOD),)
1362 build-dir = $(patsubst %/,%,$(dir $@))
1363 target-dir = $(dir $@)
1365 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1366 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1367 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1370 %.s: %.c prepare scripts FORCE
1371 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1372 %.i: %.c prepare scripts FORCE
1373 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1374 %.o: %.c prepare scripts FORCE
1375 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1376 %.lst: %.c prepare scripts FORCE
1377 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1378 %.s: %.S prepare scripts FORCE
1379 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1380 %.o: %.S prepare scripts FORCE
1381 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1382 %.symtypes: %.c prepare scripts FORCE
1383 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1386 /: prepare scripts FORCE
1388 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1389 $(build)=$(build-dir)
1390 %/: prepare scripts FORCE
1392 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1393 $(build)=$(build-dir)
1394 %.ko: prepare scripts FORCE
1396 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1397 $(build)=$(build-dir) $(@:.ko=.o)
1398 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1400 # FIXME Should go into a make.lib or something
1401 # ===========================================================================
1403 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1404 cmd_rmdirs = rm -rf $(rm-dirs)
1406 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1407 cmd_rmfiles = rm -f $(rm-files)
1409 # Run depmod only if we have System.map and depmod is executable
1410 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1411 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
1412 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
1414 # Create temporary dir for module support files
1415 # clean it up only when building all modules
1416 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1417 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1419 # read all saved command lines
1421 targets := $(wildcard $(sort $(targets)))
1422 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1424 ifneq ($(cmd_files),)
1425 $(cmd_files): ; # Do not try to update included dependency files
1426 include $(cmd_files)
1429 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1431 # $(Q)$(MAKE) $(clean)=dir
1432 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1434 endif # skip-makefile
1439 # Declare the contents of the .PHONY variable as phony. We keep that
1440 # information in a variable so we can use it in if_changed and friends.