5 NAME
=Crazed Snow-Weasel
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 ("$(origin V)", "command line")
44 # Call checker as part of compilation of C files
45 # Use 'make C=1' to enable checking (sparse, by default)
46 # Override with 'make C=1 CHECK=checker_executable CHECKFLAGS=....'
49 ifeq ("$(origin C)", "command line")
50 KBUILD_CHECKSRC
= $(C
)
53 ifndef KBUILD_CHECKSRC
57 # Use make M=dir to specify directory of external module to build
58 # Old syntax make ... SUBDIRS=$PWD is still supported
59 # Setting the environment variable KBUILD_EXTMOD take precedence
61 KBUILD_EXTMOD ?
= $(SUBDIRS
)
64 ifeq ("$(origin M)", "command line")
70 # kbuild supports saving output files in a separate directory.
71 # To locate output files in a separate directory two syntaxes are supported.
72 # In both cases the working directory must be the root of the kernel src.
74 # Use "make O=dir/to/store/output/files/"
76 # 2) Set KBUILD_OUTPUT
77 # Set the environment variable KBUILD_OUTPUT to point to the directory
78 # where the output files shall be placed.
79 # export KBUILD_OUTPUT=dir/to/store/output/files/
82 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
86 # KBUILD_SRC is set on invocation of make in OBJ directory
87 # KBUILD_SRC is not intended to be used by the regular user (for now)
90 # OK, Make called in directory where kernel src resides
91 # Do we want to locate output files in a separate directory?
93 ifeq ("$(origin O)", "command line")
98 # That's our default target when none is given on the command line
102 ifneq ($(KBUILD_OUTPUT
),)
103 # Invoke a second make in the output directory, passing relevant variables
104 # check that the output directory actually exists
105 saved-output
:= $(KBUILD_OUTPUT
)
106 KBUILD_OUTPUT
:= $(shell cd
$(KBUILD_OUTPUT
) && /bin
/pwd
)
107 $(if
$(KBUILD_OUTPUT
),, \
108 $(error output directory
"$(saved-output)" does not exist
))
110 PHONY
+= $(MAKECMDGOALS
)
112 $(filter-out _all
,$(MAKECMDGOALS
)) _all
:
113 $(if
$(KBUILD_VERBOSE
:1=),@
)$(MAKE
) -C
$(KBUILD_OUTPUT
) \
114 KBUILD_SRC
=$(CURDIR
) \
115 KBUILD_EXTMOD
="$(KBUILD_EXTMOD)" -f
$(CURDIR
)/Makefile
$@
117 # Leave processing to above invocation of make
119 endif # ifneq ($(KBUILD_OUTPUT),)
120 endif # ifeq ($(KBUILD_SRC),)
122 # We process the rest of the Makefile if this is the final invocation of make
123 ifeq ($(skip-makefile
),)
125 # If building an external module we do not care about the all: rule
126 # but instead _all depend on modules
128 ifeq ($(KBUILD_EXTMOD
),)
134 srctree
:= $(if
$(KBUILD_SRC
),$(KBUILD_SRC
),$(CURDIR
))
136 # FIXME - TOPDIR is obsolete, use srctree/objtree
141 VPATH
:= $(srctree
)$(if
$(KBUILD_EXTMOD
),:$(KBUILD_EXTMOD
))
143 export srctree objtree VPATH TOPDIR
146 # SUBARCH tells the usermode build what the underlying arch is. That is set
147 # first, and if a usermode build is happening, the "ARCH=um" on the command
148 # line overrides the setting of ARCH below. If a native build is happening,
149 # then ARCH is assigned, getting whatever value it gets normally, and
150 # SUBARCH is subsequently ignored.
152 SUBARCH
:= $(shell uname
-m | sed
-e s
/i
.86/i386
/ -e s
/sun4u
/sparc64
/ \
153 -e s
/arm.
*/arm
/ -e s
/sa110
/arm
/ \
154 -e s
/s390x
/s390
/ -e s
/parisc64
/parisc
/ \
155 -e s
/ppc.
*/powerpc
/ -e s
/mips.
*/mips
/ )
157 # Cross compiling and selecting different set of gcc/bin-utils
158 # ---------------------------------------------------------------------------
160 # When performing cross compilation for other architectures ARCH shall be set
161 # to the target architecture. (See arch/* for the possibilities).
162 # ARCH can be set during invocation of make:
164 # Another way is to have ARCH set in the environment.
165 # The default ARCH is the host where make is executed.
167 # CROSS_COMPILE specify the prefix used for all executables used
168 # during compilation. Only gcc and related bin-utils executables
169 # are prefixed with $(CROSS_COMPILE).
170 # CROSS_COMPILE can be set on the command line
171 # make CROSS_COMPILE=ia64-linux-
172 # Alternatively CROSS_COMPILE can be set in the environment.
173 # Default value for CROSS_COMPILE is not to prefix executables
174 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
179 # Architecture as present in compile.h
180 UTS_MACHINE
:= $(ARCH
)
182 KCONFIG_CONFIG ?
= .config
184 # SHELL used by kbuild
185 CONFIG_SHELL
:= $(shell if
[ -x
"$$BASH" ]; then echo
$$BASH; \
186 else if
[ -x
/bin
/bash
]; then echo
/bin
/bash
; \
187 else echo sh
; fi
; fi
)
191 HOSTCFLAGS
= -Wall
-Wstrict-prototypes
-O2
-fomit-frame-pointer
194 # Decide whether to build built-in, modular, or both.
195 # Normally, just do built-in.
200 # If we have only "make modules", don't compile built-in objects.
201 # When we're building modules with modversions, we need to consider
202 # the built-in objects during the descend as well, in order to
203 # make sure the checksums are up to date before we record them.
205 ifeq ($(MAKECMDGOALS
),modules
)
206 KBUILD_BUILTIN
:= $(if
$(CONFIG_MODVERSIONS
),1)
209 # If we have "make <whatever> modules", compile modules
210 # in addition to whatever we do anyway.
211 # Just "make" or "make all" shall build modules as well
213 ifneq ($(filter all _all modules
,$(MAKECMDGOALS
)),)
217 ifeq ($(MAKECMDGOALS
),)
221 export KBUILD_MODULES KBUILD_BUILTIN
222 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
225 # ---------------------------------------------------------------------------
227 # Normally, we echo the whole command before executing it. By making
228 # that echo $($(quiet)$(cmd)), we now have the possibility to set
229 # $(quiet) to choose other forms of output instead, e.g.
231 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
232 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
234 # If $(quiet) is empty, the whole command will be printed.
235 # If it is set to "quiet_", only the short version will be printed.
236 # If it is set to "silent_", nothing will be printed at all, since
237 # the variable $(silent_cmd_cc_o_c) doesn't exist.
239 # A simple variant is to prefix commands with $(Q) - that's useful
240 # for commands that shall be hidden in non-verbose mode.
244 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
245 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
247 ifeq ($(KBUILD_VERBOSE
),1)
255 # If the user is running make -s (silent mode), suppress echoing of
258 ifneq ($(findstring s
,$(MAKEFLAGS
)),)
262 export quiet Q KBUILD_VERBOSE
265 # Look for make include files relative to root of kernel src
266 MAKEFLAGS
+= --include-dir
=$(srctree
)
268 # We need some generic definitions
269 include $(srctree
)/scripts
/Kbuild.
include
271 # Do not use make's built-in rules and variables
272 # This increases performance and avoid hard-to-debug behavour
275 # Make variables (CC, etc...)
277 AS
= $(CROSS_COMPILE
)as
278 LD
= $(CROSS_COMPILE
)ld
279 CC
= $(CROSS_COMPILE
)gcc
281 AR
= $(CROSS_COMPILE
)ar
282 NM
= $(CROSS_COMPILE
)nm
283 STRIP
= $(CROSS_COMPILE
)strip
284 OBJCOPY
= $(CROSS_COMPILE
)objcopy
285 OBJDUMP
= $(CROSS_COMPILE
)objdump
287 GENKSYMS
= scripts
/genksyms
/genksyms
288 DEPMOD
= /sbin
/depmod
289 KALLSYMS
= scripts
/kallsyms
293 CHECKFLAGS
:= -D__linux__
-Dlinux
-D__STDC__
-Dunix
-D__unix__
-Wbitwise
$(CF
)
295 CFLAGS_MODULE
= $(MODFLAGS
)
296 AFLAGS_MODULE
= $(MODFLAGS
)
302 # Use LINUXINCLUDE when you must reference the include/ directory.
303 # Needed to be compatible with the O= option
304 LINUXINCLUDE
:= -Iinclude \
305 $(if
$(KBUILD_SRC
),-Iinclude2
-I
$(srctree
)/include) \
306 -include include/linux
/autoconf.h
308 CPPFLAGS
:= -D__KERNEL__
$(LINUXINCLUDE
)
310 CFLAGS
:= -Wall
-Wundef
-Wstrict-prototypes
-Wno-trigraphs \
311 -fno-strict-aliasing
-fno-common
312 # Force gcc to behave correct even for buggy distributions
313 CFLAGS
+= $(call cc-option
, -fno-stack-protector-all \
314 -fno-stack-protector
)
315 AFLAGS
:= -D__ASSEMBLY__
317 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
318 KERNELRELEASE
= $(shell cat
include/config
/kernel.release
2> /dev
/null
)
319 KERNELVERSION
= $(VERSION
).
$(PATCHLEVEL
).
$(SUBLEVEL
)$(EXTRAVERSION
)
321 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
322 export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
323 export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
324 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
326 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
327 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
328 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
330 # When compiling out-of-tree modules, put MODVERDIR in the module
331 # tree rather than in the kernel tree. The kernel tree might
333 export MODVERDIR
:= $(if
$(KBUILD_EXTMOD
),$(firstword $(KBUILD_EXTMOD
))/).tmp_versions
335 # Files to ignore in find ... statements
337 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
338 export RCS_TAR_IGNORE
:= --exclude SCCS
--exclude BitKeeper
--exclude .svn
--exclude CVS
--exclude .
pc --exclude .hg
--exclude .git
340 # ===========================================================================
341 # Rules shared between *config targets and build targets
343 # Basic helpers built in scripts/
344 PHONY
+= scripts_basic
346 $(Q
)$(MAKE
) $(build
)=scripts
/basic
348 # To avoid any implicit rule to kick in, define an empty command.
349 scripts
/basic
/%: scripts_basic
;
351 PHONY
+= outputmakefile
352 # outputmakefile generates a Makefile in the output directory, if using a
353 # separate output directory. This allows convenient use of make in the
356 ifneq ($(KBUILD_SRC
),)
357 $(Q
)$(CONFIG_SHELL
) $(srctree
)/scripts
/mkmakefile \
358 $(srctree
) $(objtree
) $(VERSION
) $(PATCHLEVEL
)
361 # To make sure we do not include .config for any of the *config targets
362 # catch them early, and hand them over to scripts/kconfig/Makefile
363 # It is allowed to specify more targets when calling make, including
364 # mixing *config targets and build targets.
365 # For example 'make oldconfig all'.
366 # Detect when mixed targets is specified, and make a second invocation
367 # of make so .config is not included in this case either (for *config).
369 no-dot-config-targets
:= clean mrproper
distclean \
370 cscope TAGS
tags help
%docs
check% \
371 kernelrelease kernelversion
377 ifneq ($(filter $(no-dot-config-targets
), $(MAKECMDGOALS
)),)
378 ifeq ($(filter-out $(no-dot-config-targets
), $(MAKECMDGOALS
)),)
383 ifeq ($(KBUILD_EXTMOD
),)
384 ifneq ($(filter config
%config
,$(MAKECMDGOALS
)),)
386 ifneq ($(filter-out config
%config
,$(MAKECMDGOALS
)),)
392 ifeq ($(mixed-targets
),1)
393 # ===========================================================================
394 # We're called with mixed targets (*config and build targets).
395 # Handle them one by one.
398 $(Q
)$(MAKE
) -C
$(srctree
) KBUILD_SRC
= $@
401 ifeq ($(config-targets
),1)
402 # ===========================================================================
403 # *config targets only - make sure prerequisites are updated, and descend
404 # in scripts/kconfig to make the *config target
406 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
407 # KBUILD_DEFCONFIG may point out an alternative default configuration
408 # used for 'make defconfig'
409 include $(srctree
)/arch
/$(ARCH
)/Makefile
410 export KBUILD_DEFCONFIG
412 config
%config
: scripts_basic outputmakefile FORCE
413 $(Q
)mkdir
-p
include/linux
include/config
414 $(Q
)$(MAKE
) $(build
)=scripts
/kconfig
$@
417 # ===========================================================================
418 # Build targets only - this includes vmlinux, arch specific targets, clean
419 # targets and others. In general all targets except *config targets.
421 ifeq ($(KBUILD_EXTMOD
),)
422 # Additional helpers built in scripts/
423 # Carefully list dependencies so we do not try to build scripts twice
426 scripts
: scripts_basic
include/config
/auto.conf
427 $(Q
)$(MAKE
) $(build
)=$(@
)
429 # Objects we will link into vmlinux / subdirs we need to visit
431 drivers-y
:= drivers
/ sound
/
435 endif # KBUILD_EXTMOD
437 ifeq ($(dot-config
),1)
438 # In this section, we need .config
440 # Read in dependencies to all Kconfig* files, make sure to run
441 # oldconfig if changes are detected.
442 -include include/config
/auto.conf.cmd
443 -include include/config
/auto.conf
445 # To avoid any implicit rule to kick in, define an empty command
446 $(KCONFIG_CONFIG
) include/config
/auto.conf.cmd
: ;
448 # If .config is newer than include/config/auto.conf, someone tinkered
449 # with it and forgot to run make oldconfig.
450 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
451 # we execute the config step to be sure to catch updated Kconfig files
452 include/config
/auto.conf
: $(KCONFIG_CONFIG
) include/config
/auto.conf.cmd
453 ifeq ($(KBUILD_EXTMOD
),)
454 $(Q
)$(MAKE
) -f
$(srctree
)/Makefile silentoldconfig
456 $(error kernel configuration not valid
- run
'make prepare' in
$(srctree
) to update it
)
460 # Dummy target needed, because used as prerequisite
461 include/config
/auto.conf
: ;
464 # The all: target is the default when no target is given on the
466 # This allow a user to issue only 'make' to build a kernel including modules
467 # Defaults vmlinux but it is usually overridden in the arch makefile
470 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
476 ifdef CONFIG_FRAME_POINTER
477 CFLAGS
+= -fno-omit-frame-pointer
$(call cc-option
,-fno-optimize-sibling-calls
,)
479 CFLAGS
+= -fomit-frame-pointer
482 ifdef CONFIG_UNWIND_INFO
483 CFLAGS
+= -fasynchronous-unwind-tables
486 ifdef CONFIG_DEBUG_INFO
490 include $(srctree
)/arch
/$(ARCH
)/Makefile
492 # arch Makefile may override CC so keep this after arch Makefile is included
493 NOSTDINC_FLAGS
+= -nostdinc
-isystem
$(shell $(CC
) -print-file-name
=include)
494 CHECKFLAGS
+= $(NOSTDINC_FLAGS
)
496 # warn about C99 declaration after statement
497 CFLAGS
+= $(call cc-option
,-Wdeclaration-after-statement
,)
499 # disable pointer signed / unsigned warnings in gcc 4.0
500 CFLAGS
+= $(call cc-option
,-Wno-pointer-sign
,)
502 # Default kernel image to build when no specific target is given.
503 # KBUILD_IMAGE may be overruled on the command line or
504 # set in the environment
505 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
507 export KBUILD_IMAGE ?
= vmlinux
510 # INSTALL_PATH specifies where to place the updated kernel and system map
511 # images. Default is /boot, but you can set it to other values
512 export INSTALL_PATH ?
= /boot
515 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
516 # relocations required by build roots. This is not defined in the
517 # makefile but the argument can be passed to make if needed.
520 MODLIB
= $(INSTALL_MOD_PATH
)/lib
/modules
/$(KERNELRELEASE
)
524 # INSTALL_MOD_STRIP, if defined, will cause modules to be
525 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
526 # the default option --strip-debug will be used. Otherwise,
527 # INSTALL_MOD_STRIP will used as the options to the strip command.
529 ifdef INSTALL_MOD_STRIP
530 ifeq ($(INSTALL_MOD_STRIP
),1)
531 mod_strip_cmd
= $STRIP) --strip-debug
533 mod_strip_cmd
= $(STRIP
) $(INSTALL_MOD_STRIP
)
534 endif # INSTALL_MOD_STRIP=1
537 endif # INSTALL_MOD_STRIP
541 ifeq ($(KBUILD_EXTMOD
),)
542 core-y
+= kernel
/ mm
/ fs
/ ipc
/ security
/ crypto
/ block
/
544 vmlinux-dirs
:= $(patsubst %/,%,$(filter %/, $(init-y
) $(init-m
) \
545 $(core-y
) $(core-m
) $(drivers-y
) $(drivers-m
) \
546 $(net-y
) $(net-m
) $(libs-y
) $(libs-m
)))
548 vmlinux-alldirs
:= $(sort $(vmlinux-dirs
) $(patsubst %/,%,$(filter %/, \
550 $(core-n
) $(core-
) $(drivers-n
) $(drivers-
) \
551 $(net-n
) $(net-
) $(libs-n
) $(libs-
))))
553 init-y
:= $(patsubst %/, %/built-in.o
, $(init-y
))
554 core-y
:= $(patsubst %/, %/built-in.o
, $(core-y
))
555 drivers-y
:= $(patsubst %/, %/built-in.o
, $(drivers-y
))
556 net-y
:= $(patsubst %/, %/built-in.o
, $(net-y
))
557 libs-y1
:= $(patsubst %/, %/lib.a
, $(libs-y
))
558 libs-y2
:= $(patsubst %/, %/built-in.o
, $(libs-y
))
559 libs-y
:= $(libs-y1
) $(libs-y2
)
562 # ---------------------------------------------------------------------------
563 # vmlinux is built from the objects selected by $(vmlinux-init) and
564 # $(vmlinux-main). Most are built-in.o files from top-level directories
565 # in the kernel tree, others are specified in arch/$(ARCH)Makefile.
566 # Ordering when linking is important, and $(vmlinux-init) must be first.
571 # +-< $(vmlinux-init)
572 # | +--< init/version.o + more
574 # +--< $(vmlinux-main)
575 # | +--< driver/built-in.o mm/built-in.o + more
577 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
579 # vmlinux version (uname -v) cannot be updated during normal
580 # descending-into-subdirs phase since we do not yet know if we need to
582 # Therefore this step is delayed until just before final link of vmlinux -
583 # except in the kallsyms case where it is done just before adding the
584 # symbols to the kernel.
586 # System.map is generated to document addresses of all kernel symbols
588 vmlinux-init
:= $(head-y
) $(init-y
)
589 vmlinux-main
:= $(core-y
) $(libs-y
) $(drivers-y
) $(net-y
)
590 vmlinux-all
:= $(vmlinux-init
) $(vmlinux-main
)
591 vmlinux-lds
:= arch
/$(ARCH
)/kernel
/vmlinux.lds
593 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
594 # May be overridden by arch/$(ARCH)/Makefile
595 quiet_cmd_vmlinux__ ?
= LD
$@
596 cmd_vmlinux__ ?
= $(LD
) $(LDFLAGS
) $(LDFLAGS_vmlinux
) -o
$@ \
597 -T
$(vmlinux-lds
) $(vmlinux-init
) \
598 --start-group
$(vmlinux-main
) --end-group \
599 $(filter-out $(vmlinux-lds
) $(vmlinux-init
) $(vmlinux-main
) FORCE
,$^
)
601 # Generate new vmlinux version
602 quiet_cmd_vmlinux_version
= GEN .version
603 cmd_vmlinux_version
= set
-e
; \
604 if
[ ! -r .version
]; then \
608 mv .version .old_version
; \
609 expr
0$$(cat .old_version
) + 1 >.version
; \
611 $(MAKE
) $(build
)=init
613 # Generate System.map
614 quiet_cmd_sysmap
= SYSMAP
615 cmd_sysmap
= $(CONFIG_SHELL
) $(srctree
)/scripts
/mksysmap
618 # If CONFIG_KALLSYMS is set .version is already updated
619 # Generate System.map and verify that the content is consistent
620 # Use + in front of the vmlinux_version rule to silent warning with make -j2
621 # First command is ':' to allow us to use + in front of the rule
622 define rule_vmlinux__
624 $(if
$(CONFIG_KALLSYMS
),,+$(call cmd
,vmlinux_version
))
626 $(call cmd
,vmlinux__
)
627 $(Q
)echo
'cmd_$@ := $(cmd_vmlinux__)' > $(@D
)/.
$(@F
).cmd
629 $(Q
)$(if
$($(quiet
)cmd_sysmap
), \
630 echo
' $($(quiet)cmd_sysmap) System.map' &&) \
631 $(cmd_sysmap
) $@ System.map
; \
632 if
[ $$?
-ne
0 ]; then \
640 ifdef CONFIG_KALLSYMS
641 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
642 # It's a three stage process:
643 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
645 # Running kallsyms on that gives us .tmp_kallsyms1.o with
646 # the right size - vmlinux version (uname -v) is updated during this step
647 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
648 # but due to the added section, some addresses have shifted.
649 # From here, we generate a correct .tmp_kallsyms2.o
650 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
651 # o Verify that the System.map from vmlinux matches the map from
652 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
653 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
654 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
655 # temporary bypass to allow the kernel to be built while the
656 # maintainers work out what went wrong with kallsyms.
658 ifdef CONFIG_KALLSYMS_EXTRA_PASS
664 kallsyms.o
:= .tmp_kallsyms
$(last_kallsyms
).o
666 define verify_kallsyms
667 $(Q
)$(if
$($(quiet
)cmd_sysmap
), \
668 echo
' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
669 $(cmd_sysmap
) .tmp_vmlinux
$(last_kallsyms
) .tmp_System.map
670 $(Q
)cmp
-s System.map .tmp_System.map || \
671 (echo Inconsistent kallsyms data
; \
672 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS
; \
673 rm .tmp_kallsyms
* ; /bin
/false
)
676 # Update vmlinux version before link
677 # Use + in front of this rule to silent warning about make -j1
678 # First command is ':' to allow us to use + in front of this rule
679 cmd_ksym_ld
= $(cmd_vmlinux__
)
682 +$(call cmd
,vmlinux_version
)
683 $(call cmd
,vmlinux__
)
684 $(Q
)echo
'cmd_$@ := $(cmd_vmlinux__)' > $(@D
)/.
$(@F
).cmd
687 # Generate .S file with all kernel symbols
688 quiet_cmd_kallsyms
= KSYM
$@
689 cmd_kallsyms
= $(NM
) -n
$< |
$(KALLSYMS
) \
690 $(if
$(CONFIG_KALLSYMS_ALL
),--all-symbols
) > $@
692 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o
: %.o
: %.S scripts FORCE
693 $(call if_changed_dep
,as_o_S
)
695 .tmp_kallsyms
%.S
: .tmp_vmlinux
% $(KALLSYMS
)
698 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
699 .tmp_vmlinux1
: $(vmlinux-lds
) $(vmlinux-all
) FORCE
700 $(call if_changed_rule
,ksym_ld
)
702 .tmp_vmlinux2
: $(vmlinux-lds
) $(vmlinux-all
) .tmp_kallsyms1.o FORCE
703 $(call if_changed
,vmlinux__
)
705 .tmp_vmlinux3
: $(vmlinux-lds
) $(vmlinux-all
) .tmp_kallsyms2.o FORCE
706 $(call if_changed
,vmlinux__
)
708 # Needs to visit scripts/ before $(KALLSYMS) can be used.
709 $(KALLSYMS
): scripts
;
711 # Generate some data for debugging strange kallsyms problems
712 debug_kallsyms
: .tmp_map
$(last_kallsyms
)
714 .tmp_map
%: .tmp_vmlinux
% FORCE
715 ($(OBJDUMP
) -h
$< |
$(AWK
) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM
) $<) |
sort > $@
721 endif # ifdef CONFIG_KALLSYMS
723 # vmlinux image - including updated kernel symbols
724 vmlinux
: $(vmlinux-lds
) $(vmlinux-init
) $(vmlinux-main
) $(kallsyms.o
) FORCE
725 $(call if_changed_rule
,vmlinux__
)
726 $(Q
)rm -f .old_version
728 # The actual objects are generated when descending,
729 # make sure no implicit rule kicks in
730 $(sort $(vmlinux-init
) $(vmlinux-main
)) $(vmlinux-lds
): $(vmlinux-dirs
) ;
732 # Handle descending into subdirectories listed in $(vmlinux-dirs)
733 # Preset locale variables to speed up the build process. Limit locale
734 # tweaks to this spot to avoid wrong language settings when running
735 # make menuconfig etc.
736 # Error messages still appears in the original language
738 PHONY
+= $(vmlinux-dirs
)
739 $(vmlinux-dirs
): prepare scripts
740 $(Q
)$(MAKE
) $(build
)=$@
742 # Build the kernel release string
743 # The KERNELRELEASE is stored in a file named include/config/kernel.release
744 # to be used when executing for example make install or make modules_install
746 # Take the contents of any files called localversion* and the config
747 # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
748 # LOCALVERSION from the command line override all of this
751 space
:= $(nullstring
) # end of line
753 ___localver
= $(objtree
)/localversion
* $(srctree
)/localversion
*
754 __localver
= $(sort $(wildcard $(___localver
)))
755 # skip backup files (containing '~')
756 _localver
= $(foreach f
, $(__localver
), $(if
$(findstring ~
, $(f
)),,$(f
)))
758 localver
= $(subst $(space
),, \
759 $(shell cat
/dev
/null
$(_localver
)) \
760 $(patsubst "%",%,$(CONFIG_LOCALVERSION
)))
762 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
763 # and if the SCM is know a tag from the SCM is appended.
764 # The appended tag is determined by the SCM used.
766 # Currently, only git is supported.
767 # Other SCMs can edit scripts/setlocalversion and add the appropriate
769 ifdef CONFIG_LOCALVERSION_AUTO
770 _localver-auto
= $(shell $(CONFIG_SHELL
) \
771 $(srctree
)/scripts
/setlocalversion
$(srctree
))
772 localver-auto
= $(LOCALVERSION
)$(_localver-auto
)
775 localver-full
= $(localver
)$(localver-auto
)
777 # Store (new) KERNELRELASE string in include/config/kernel.release
778 kernelrelease
= $(KERNELVERSION
)$(localver-full
)
779 include/config
/kernel.release
: include/config
/auto.conf FORCE
781 $(Q
)echo
$(kernelrelease
) > $@
784 # Things we need to do before we recursively start building the kernel
785 # or the modules are listed in "prepare".
786 # A multi level approach is used. prepareN is processed before prepareN-1.
787 # archprepare is used in arch Makefiles and when processed asm symlink,
788 # version.h and scripts_basic is processed / created.
790 # Listed in dependency order
791 PHONY
+= prepare archprepare prepare0 prepare1 prepare2 prepare3
793 # prepare-all is deprecated, use prepare as valid replacement
796 # prepare3 is used to check if we are building in a separate output directory,
798 # 1) Check that make has not been executed in the kernel src $(srctree)
799 # 2) Create the include2 directory, used for the second asm symlink
800 prepare3
: include/config
/kernel.release
801 ifneq ($(KBUILD_SRC
),)
802 @echo
' Using $(srctree) as source for kernel'
803 $(Q
)if
[ -f
$(srctree
)/.config
-o
-d
$(srctree
)/include/config
]; then \
804 echo
" $(srctree) is not clean, please run 'make mrproper'";\
805 echo
" in the '$(srctree)' directory.";\
808 $(Q
)if
[ ! -d include2
]; then mkdir
-p include2
; fi
;
809 $(Q
)ln
-fsn
$(srctree
)/include/asm-
$(ARCH
) include2
/asm
812 # prepare2 creates a makefile if using a separate output directory
813 prepare2
: prepare3 outputmakefile
815 prepare1
: prepare2
include/linux
/version.h
include/asm \
816 include/config
/auto.conf
817 ifneq ($(KBUILD_MODULES
),)
818 $(Q
)mkdir
-p
$(MODVERDIR
)
819 $(Q
)rm -f
$(MODVERDIR
)/*
822 archprepare
: prepare1 scripts_basic
824 prepare0
: archprepare FORCE
825 $(Q
)$(MAKE
) $(build
)=.
827 # All the preparing..
828 prepare prepare-all
: prepare0
830 # Leave this as default for preprocessing vmlinux.lds.S, which is now
831 # done in arch/$(ARCH)/kernel/Makefile
833 export CPPFLAGS_vmlinux.lds
+= -P
-C
-U
$(ARCH
)
835 # FIXME: The asm symlink changes when $(ARCH) changes. That's
836 # hard to detect, but I suppose "make mrproper" is a good idea
837 # before switching between archs anyway.
840 @echo
' SYMLINK $@ -> include/asm-$(ARCH)'
841 $(Q
)if
[ ! -d
include ]; then mkdir
-p
include; fi
;
842 @ln
-fsn asm-
$(ARCH
) $@
844 # Generate some files
845 # ---------------------------------------------------------------------------
847 # KERNELRELEASE can change from a few different places, meaning version.h
848 # needs to be updated, so this check is forced on all builds
852 define filechk_version.h
853 if
[ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt
$(uts_len
) ]; then \
854 echo
'"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
857 (echo \
#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
858 echo \
#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \
859 echo
'#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \
863 include/linux
/version.h
: $(srctree
)/Makefile
include/config
/kernel.release FORCE
864 $(call filechk
,version.h
)
866 # ---------------------------------------------------------------------------
870 @echo
'*** Warning: make $@ is unnecessary now.'
872 # ---------------------------------------------------------------------------
877 # By default, build modules as well
884 modules
: $(vmlinux-dirs
) $(if
$(KBUILD_BUILTIN
),vmlinux
)
885 @echo
' Building modules, stage 2.';
886 $(Q
)$(MAKE
) -rR
-f
$(srctree
)/scripts
/Makefile.modpost
889 # Target to prepare building external modules
890 PHONY
+= modules_prepare
891 modules_prepare
: prepare scripts
893 # Target to install modules
894 PHONY
+= modules_install
895 modules_install
: _modinst_ _modinst_post
899 @if
[ -z
"`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
900 echo
"Warning: you may need to install module-init-tools"; \
901 echo
"See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
904 @
rm -rf
$(MODLIB
)/kernel
905 @
rm -f
$(MODLIB
)/source
906 @mkdir
-p
$(MODLIB
)/kernel
907 @ln
-s
$(srctree
) $(MODLIB
)/source
908 @if
[ ! $(objtree
) -ef
$(MODLIB
)/build
]; then \
909 rm -f
$(MODLIB
)/build
; \
910 ln
-s
$(objtree
) $(MODLIB
)/build
; \
912 $(Q
)$(MAKE
) -rR
-f
$(srctree
)/scripts
/Makefile.modinst
914 # If System.map exists, run depmod. This deliberately does not have a
915 # dependency on System.map since that would run the dependency tree on
916 # vmlinux. This depmod is only for convenience to give the initial
917 # boot a modules.dep even before / is mounted read-write. However the
918 # boot script depmod is the master version.
919 ifeq "$(strip $(INSTALL_MOD_PATH))" ""
922 depmod_opts
:= -b
$(INSTALL_MOD_PATH
) -r
924 PHONY
+= _modinst_post
925 _modinst_post
: _modinst_
926 if
[ -r System.map
-a
-x
$(DEPMOD
) ]; then
$(DEPMOD
) -ae
-F System.map
$(depmod_opts
) $(KERNELRELEASE
); fi
928 else # CONFIG_MODULES
930 # Modules not configured
931 # ---------------------------------------------------------------------------
933 modules modules_install
: FORCE
935 @echo
"The present kernel configuration has modules disabled."
936 @echo
"Type 'make config' and enable loadable module support."
937 @echo
"Then build a kernel with module support enabled."
941 endif # CONFIG_MODULES
944 # Cleaning is done on three levels.
945 # make clean Delete most generated files
946 # Leave enough to build external modules
947 # make mrproper Delete the current configuration, and all generated files
948 # make distclean Remove editor backup files, patch leftover files and the like
950 # Directories & files removed with 'make clean'
951 CLEAN_DIRS
+= $(MODVERDIR
)
952 CLEAN_FILES
+= vmlinux System.map \
953 .tmp_kallsyms
* .tmp_version .tmp_vmlinux
* .tmp_System.map
955 # Directories & files removed with 'make mrproper'
956 MRPROPER_DIRS
+= include/config include2
957 MRPROPER_FILES
+= .config .config.old
include/asm .version .old_version \
958 include/linux
/autoconf.h
include/linux
/version.h \
959 Module.symvers
tags TAGS cscope
*
961 # clean - Delete most, but leave enough to build external modules
963 clean: rm-dirs
:= $(CLEAN_DIRS
)
964 clean: rm-files
:= $(CLEAN_FILES
)
965 clean-dirs
:= $(addprefix _clean_
,$(srctree
) $(vmlinux-alldirs
))
967 PHONY
+= $(clean-dirs
) clean archclean
969 $(Q
)$(MAKE
) $(clean)=$(patsubst _clean_
%,%,$@
)
971 clean: archclean
$(clean-dirs
)
974 @find .
$(RCS_FIND_IGNORE
) \
975 \
( -name
'*.[oas]' -o
-name
'*.ko' -o
-name
'.*.cmd' \
976 -o
-name
'.*.d' -o
-name
'.*.tmp' -o
-name
'*.mod.c' \
977 -o
-name
'*.symtypes' \
) \
978 -type f
-print | xargs
rm -f
980 # mrproper - Delete all generated files, including .config
982 mrproper
: rm-dirs
:= $(wildcard $(MRPROPER_DIRS
))
983 mrproper
: rm-files
:= $(wildcard $(MRPROPER_FILES
))
984 mrproper-dirs
:= $(addprefix _mrproper_
,Documentation
/DocBook scripts
)
986 PHONY
+= $(mrproper-dirs
) mrproper archmrproper
988 $(Q
)$(MAKE
) $(clean)=$(patsubst _mrproper_
%,%,$@
)
990 mrproper
: clean archmrproper
$(mrproper-dirs
)
999 @find
$(srctree
) $(RCS_FIND_IGNORE
) \
1000 \
( -name
'*.orig' -o
-name
'*.rej' -o
-name
'*~' \
1001 -o
-name
'*.bak' -o
-name
'#*#' -o
-name
'.*.orig' \
1002 -o
-name
'.*.rej' -o
-size
0 \
1003 -o
-name
'*%' -o
-name
'.*.cmd' -o
-name
'core' \
) \
1004 -type f
-print | xargs
rm -f
1007 # Packaging of the kernel to various formats
1008 # ---------------------------------------------------------------------------
1009 # rpm target kept for backward compatibility
1010 package-dir
:= $(srctree
)/scripts
/package
1012 %pkg
: include/config
/kernel.release FORCE
1013 $(Q
)$(MAKE
) $(build
)=$(package-dir
) $@
1014 rpm
: include/config
/kernel.release FORCE
1015 $(Q
)$(MAKE
) $(build
)=$(package-dir
) $@
1018 # Brief documentation of the typical targets used
1019 # ---------------------------------------------------------------------------
1021 boards
:= $(wildcard $(srctree
)/arch
/$(ARCH
)/configs
/*_defconfig
)
1022 boards
:= $(notdir $(boards
))
1025 @echo
'Cleaning targets:'
1026 @echo
' clean - remove most generated files but keep the config'
1027 @echo
' mrproper - remove all generated files + config + various backup files'
1029 @echo
'Configuration targets:'
1030 @
$(MAKE
) -f
$(srctree
)/scripts
/kconfig
/Makefile help
1032 @echo
'Other generic targets:'
1033 @echo
' all - Build all targets marked with [*]'
1034 @echo
'* vmlinux - Build the bare kernel'
1035 @echo
'* modules - Build all modules'
1036 @echo
' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1037 @echo
' dir/ - Build all files in dir and below'
1038 @echo
' dir/file.[ois] - Build specified target only'
1039 @echo
' dir/file.ko - Build module including final link'
1040 @echo
' rpm - Build a kernel as an RPM package'
1041 @echo
' tags/TAGS - Generate tags file for editors'
1042 @echo
' cscope - Generate cscope index'
1043 @echo
' kernelrelease - Output the release version string'
1044 @echo
' kernelversion - Output the version stored in Makefile'
1046 @echo
'Static analysers'
1047 @echo
' checkstack - Generate a list of stack hogs'
1048 @echo
' namespacecheck - Name space analysis on compiled kernel'
1050 @echo
'Kernel packaging:'
1051 @
$(MAKE
) $(build
)=$(package-dir
) help
1053 @echo
'Documentation targets:'
1054 @
$(MAKE
) -f
$(srctree
)/Documentation
/DocBook
/Makefile dochelp
1056 @echo
'Architecture specific targets ($(ARCH)):'
1057 @
$(if
$(archhelp
),$(archhelp
),\
1058 echo
' No architecture specific help defined for $(ARCH)')
1061 $(foreach b
, $(boards
), \
1062 printf
" %-24s - Build for %s\\n" $(b
) $(subst _defconfig
,,$(b
));) \
1065 @echo
' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1066 @echo
' make O=dir [targets] Locate all output files in "dir", including .config'
1067 @echo
' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1068 @echo
' make C=2 [targets] Force check of all c source with $$CHECK'
1070 @echo
'Execute "make" or "make all" to build all targets marked with [*] '
1071 @echo
'For further info see the ./README file'
1074 # Documentation targets
1075 # ---------------------------------------------------------------------------
1076 %docs
: scripts_basic FORCE
1077 $(Q
)$(MAKE
) $(build
)=Documentation
/DocBook
$@
1079 else # KBUILD_EXTMOD
1082 # External module support.
1083 # When building external modules the kernel used as basis is considered
1084 # read-only, and no consistency checks are made and the make
1085 # system is not used on the basis kernel. If updates are required
1086 # in the basis kernel ordinary make commands (without M=...) must
1089 # The following are the only valid targets when building external
1091 # make M=dir clean Delete all automatically generated files
1092 # make M=dir modules Make all modules in specified dir
1093 # make M=dir Same as 'make M=dir modules'
1094 # make M=dir modules_install
1095 # Install the modules built in the module directory
1096 # Assumes install directory is already created
1098 # We are always building modules
1100 PHONY
+= crmodverdir
1102 $(Q
)mkdir
-p
$(MODVERDIR
)
1103 $(Q
)rm -f
$(MODVERDIR
)/*
1105 PHONY
+= $(objtree
)/Module.symvers
1106 $(objtree
)/Module.symvers
:
1107 @
test -e
$(objtree
)/Module.symvers ||
( \
1109 echo
" WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1110 echo
" is missing; modules will have no dependencies and modversions."; \
1113 module-dirs
:= $(addprefix _module_
,$(KBUILD_EXTMOD
))
1114 PHONY
+= $(module-dirs
) modules
1115 $(module-dirs
): crmodverdir
$(objtree
)/Module.symvers
1116 $(Q
)$(MAKE
) $(build
)=$(patsubst _module_
%,%,$@
)
1118 modules
: $(module-dirs
)
1119 @echo
' Building modules, stage 2.';
1120 $(Q
)$(MAKE
) -rR
-f
$(srctree
)/scripts
/Makefile.modpost
1122 PHONY
+= modules_install
1123 modules_install
: _emodinst_ _emodinst_post
1125 install-dir
:= $(if
$(INSTALL_MOD_DIR
),$(INSTALL_MOD_DIR
),extra
)
1128 $(Q
)mkdir
-p
$(MODLIB
)/$(install-dir
)
1129 $(Q
)$(MAKE
) -rR
-f
$(srctree
)/scripts
/Makefile.modinst
1131 # Run depmod only is we have System.map and depmod is executable
1132 quiet_cmd_depmod
= DEPMOD
$(KERNELRELEASE
)
1133 cmd_depmod
= if
[ -r System.map
-a
-x
$(DEPMOD
) ]; then \
1134 $(DEPMOD
) -ae
-F System.map \
1135 $(if
$(strip $(INSTALL_MOD_PATH
)), \
1136 -b
$(INSTALL_MOD_PATH
) -r
) \
1140 PHONY
+= _emodinst_post
1141 _emodinst_post
: _emodinst_
1144 clean-dirs
:= $(addprefix _clean_
,$(KBUILD_EXTMOD
))
1146 PHONY
+= $(clean-dirs
) clean
1148 $(Q
)$(MAKE
) $(clean)=$(patsubst _clean_
%,%,$@
)
1150 clean: rm-dirs
:= $(MODVERDIR
)
1151 clean: $(clean-dirs
)
1153 @find
$(KBUILD_EXTMOD
) $(RCS_FIND_IGNORE
) \
1154 \
( -name
'*.[oas]' -o
-name
'*.ko' -o
-name
'.*.cmd' \
1155 -o
-name
'.*.d' -o
-name
'.*.tmp' -o
-name
'*.mod.c' \
) \
1156 -type f
-print | xargs
rm -f
1159 @echo
' Building external modules.'
1160 @echo
' Syntax: make -C path/to/kernel/src M=$$PWD target'
1162 @echo
' modules - default target, build the module(s)'
1163 @echo
' modules_install - install the module'
1164 @echo
' clean - remove generated files in module directory only'
1168 PHONY
+= prepare scripts
1171 endif # KBUILD_EXTMOD
1173 # Generate tags for editors
1174 # ---------------------------------------------------------------------------
1176 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
1177 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
1178 #Adding $(srctree) adds about 20M on i386 to the size of the output file!
1180 ifeq ($(src
),$(obj
))
1183 __srctree
= $(srctree
)/
1186 ifeq ($(ALLSOURCE_ARCHS
),)
1188 ALLINCLUDE_ARCHS
:= $(ARCH
) $(SUBARCH
)
1190 ALLINCLUDE_ARCHS
:= $(ARCH
)
1193 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour.
1194 ALLINCLUDE_ARCHS
:= $(ALLSOURCE_ARCHS
)
1197 ALLSOURCE_ARCHS
:= $(ARCH
)
1200 ( find
$(__srctree
) $(RCS_FIND_IGNORE
) \
1201 \
( -name
include -o
-name arch \
) -prune
-o \
1203 for ARCH in
$(ALLSOURCE_ARCHS
) ; do \
1204 find
$(__srctree
)arch
/$${ARCH} $(RCS_FIND_IGNORE
) \
1207 find
$(__srctree
)security
/selinux
/include $(RCS_FIND_IGNORE
) \
1209 find
$(__srctree
)include $(RCS_FIND_IGNORE
) \
1210 \
( -name config
-o
-name
'asm-*' \
) -prune \
1211 -o
-name
$1 -print; \
1212 for ARCH in
$(ALLINCLUDE_ARCHS
) ; do \
1213 find
$(__srctree
)include/asm-
$${ARCH} $(RCS_FIND_IGNORE
) \
1216 find
$(__srctree
)include/asm-generic
$(RCS_FIND_IGNORE
) \
1221 $(call find-sources
,'*.[chS]')
1224 $(call find-sources
,'Kconfig*')
1226 define all-defconfigs
1227 $(call find-sources
,'defconfig')
1230 quiet_cmd_cscope-file
= FILELST cscope.files
1231 cmd_cscope-file
= (echo \
-k
; echo \
-q
; $(all-sources
)) > cscope.files
1233 quiet_cmd_cscope
= MAKE cscope.out
1234 cmd_cscope
= cscope
-b
1237 $(call cmd
,cscope-file
)
1240 quiet_cmd_TAGS
= MAKE
$@
1243 ETAGSF
=`etags --version | grep -i exuberant >/dev/null && \
1244 echo "-I __initdata,__exitdata,__acquires,__releases \
1245 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1246 --extra=+f --c-kinds=+px"`; \
1247 $(all-sources
) | xargs etags
$$ETAGSF -a
; \
1248 if
test "x$$ETAGSF" = x
; then \
1249 $(all-kconfigs
) | xargs etags
-a \
1250 --regex
='/^config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
1251 $(all-defconfigs
) | xargs etags
-a \
1252 --regex
='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
1260 quiet_cmd_tags
= MAKE
$@
1263 CTAGSF
=`ctags --version | grep -i exuberant >/dev/null && \
1264 echo "-I __initdata,__exitdata,__acquires,__releases \
1265 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1266 --extra=+f --c-kinds=+px"`; \
1267 $(all-sources
) | xargs ctags
$$CTAGSF -a
1274 # Scripts to check various things for consistency
1275 # ---------------------------------------------------------------------------
1278 find
* $(RCS_FIND_IGNORE
) \
1279 -name
'*.[hcS]' -type f
-print |
sort \
1280 | xargs
$(PERL
) -w scripts
/checkincludes.pl
1283 find
* $(RCS_FIND_IGNORE
) \
1284 -name
'*.[hcS]' -type f
-print |
sort \
1285 | xargs
$(PERL
) -w scripts
/checkversion.pl
1288 $(PERL
) $(srctree
)/scripts
/namespace.pl
1290 endif #ifeq ($(config-targets),1)
1291 endif #ifeq ($(mixed-targets),1)
1293 PHONY
+= checkstack kernelrelease kernelversion
1295 $(OBJDUMP
) -d vmlinux
$$(find .
-name
'*.ko') | \
1296 $(PERL
) $(src
)/scripts
/checkstack.pl
$(ARCH
)
1299 $(if
$(wildcard include/config
/kernel.release
), $(Q
)echo
$(KERNELRELEASE
), \
1300 $(error kernelrelease not valid
- run
'make prepare' to update it
))
1302 @echo
$(KERNELVERSION
)
1305 # ---------------------------------------------------------------------------
1306 # Single targets are compatible with:
1307 # - build whith mixed source and output
1308 # - build with separate output dir 'make O=...'
1309 # - external modules
1311 # target-dir => where to store outputfile
1312 # build-dir => directory in kernel source tree to use
1314 ifeq ($(KBUILD_EXTMOD
),)
1315 build-dir
= $(patsubst %/,%,$(dir $@
))
1316 target-dir
= $(dir $@
)
1318 zap-slash
=$(filter-out .
,$(patsubst %/,%,$(dir $@
)))
1319 build-dir
= $(KBUILD_EXTMOD
)$(if
$(zap-slash
),/$(zap-slash
))
1320 target-dir
= $(if
$(KBUILD_EXTMOD
),$(dir $<),$(dir $@
))
1323 %.s
: %.c prepare scripts FORCE
1324 $(Q
)$(MAKE
) $(build
)=$(build-dir
) $(target-dir
)$(notdir $@
)
1325 %.i
: %.c prepare scripts FORCE
1326 $(Q
)$(MAKE
) $(build
)=$(build-dir
) $(target-dir
)$(notdir $@
)
1327 %.o
: %.c prepare scripts FORCE
1328 $(Q
)$(MAKE
) $(build
)=$(build-dir
) $(target-dir
)$(notdir $@
)
1329 %.lst
: %.c prepare scripts FORCE
1330 $(Q
)$(MAKE
) $(build
)=$(build-dir
) $(target-dir
)$(notdir $@
)
1331 %.s
: %.S prepare scripts FORCE
1332 $(Q
)$(MAKE
) $(build
)=$(build-dir
) $(target-dir
)$(notdir $@
)
1333 %.o
: %.S prepare scripts FORCE
1334 $(Q
)$(MAKE
) $(build
)=$(build-dir
) $(target-dir
)$(notdir $@
)
1335 %.symtypes
: %.c prepare scripts FORCE
1336 $(Q
)$(MAKE
) $(build
)=$(build-dir
) $(target-dir
)$(notdir $@
)
1339 / %/: prepare scripts FORCE
1340 $(Q
)$(MAKE
) KBUILD_MODULES
=$(if
$(CONFIG_MODULES
),1) \
1341 $(build
)=$(build-dir
)
1342 %.ko
: prepare scripts FORCE
1343 $(Q
)$(MAKE
) KBUILD_MODULES
=$(if
$(CONFIG_MODULES
),1) \
1344 $(build
)=$(build-dir
) $(@
:.ko
=.o
)
1345 $(Q
)$(MAKE
) -rR
-f
$(srctree
)/scripts
/Makefile.modpost
1347 # FIXME Should go into a make.lib or something
1348 # ===========================================================================
1350 quiet_cmd_rmdirs
= $(if
$(wildcard $(rm-dirs
)),CLEAN
$(wildcard $(rm-dirs
)))
1351 cmd_rmdirs
= rm -rf
$(rm-dirs
)
1353 quiet_cmd_rmfiles
= $(if
$(wildcard $(rm-files
)),CLEAN
$(wildcard $(rm-files
)))
1354 cmd_rmfiles
= rm -f
$(rm-files
)
1357 a_flags
= -Wp
,-MD
,$(depfile
) $(AFLAGS
) $(AFLAGS_KERNEL
) \
1358 $(NOSTDINC_FLAGS
) $(CPPFLAGS
) \
1359 $(modkern_aflags
) $(EXTRA_AFLAGS
) $(AFLAGS_
$(basetarget
).o
)
1361 quiet_cmd_as_o_S
= AS
$@
1362 cmd_as_o_S
= $(CC
) $(a_flags
) -c
-o
$@
$<
1364 # read all saved command lines
1366 targets
:= $(wildcard $(sort $(targets
)))
1367 cmd_files
:= $(wildcard .
*.cmd
$(foreach f
,$(targets
),$(dir $(f
)).
$(notdir $(f
)).cmd
))
1369 ifneq ($(cmd_files
),)
1370 $(cmd_files
): ; # Do not try to update included dependency files
1371 include $(cmd_files
)
1374 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1376 # $(Q)$(MAKE) $(clean)=dir
1377 clean := -f
$(if
$(KBUILD_SRC
),$(srctree
)/)scripts
/Makefile.
clean obj
1379 endif # skip-makefile
1385 # Declare the contents of the .PHONY variable as phony. We keep that
1386 # information in a variable se we can use it in if_changed and friends.