Makefile 52 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470147114721473147414751476147714781479148014811482148314841485148614871488148914901491149214931494149514961497149814991500150115021503150415051506150715081509151015111512151315141515151615171518151915201521152215231524152515261527152815291530153115321533153415351536153715381539154015411542154315441545154615471548154915501551155215531554155515561557155815591560156115621563156415651566
  1. VERSION = 2
  2. PATCHLEVEL = 6
  3. SUBLEVEL = 24
  4. EXTRAVERSION =
  5. NAME = Arr Matey! A Hairy Bilge Rat!
  6. # *DOCUMENTATION*
  7. # To see a list of typical targets execute "make help"
  8. # More info can be located in ./README
  9. # Comments in this file are targeted only to the developer, do not
  10. # expect to learn how to build the kernel reading this file.
  11. # Do not:
  12. # o use make's built-in rules and variables
  13. # (this increases performance and avoids hard-to-debug behaviour);
  14. # o print "Entering directory ...";
  15. MAKEFLAGS += -rR --no-print-directory
  16. # We are using a recursive build, so we need to do a little thinking
  17. # to get the ordering right.
  18. #
  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
  25. # is now up to date.
  26. #
  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
  30. # prepare rule.
  31. # To put more focus on warnings, be less verbose as default
  32. # Use 'make V=1' to see the full commands
  33. ifdef V
  34. ifeq ("$(origin V)", "command line")
  35. KBUILD_VERBOSE = $(V)
  36. endif
  37. endif
  38. ifndef KBUILD_VERBOSE
  39. KBUILD_VERBOSE = 0
  40. endif
  41. # Call a source code checker (by default, "sparse") as part of the
  42. # C compilation.
  43. #
  44. # Use 'make C=1' to enable checking of only re-compiled files.
  45. # Use 'make C=2' to enable checking of *all* source files, regardless
  46. # of whether they are re-compiled or not.
  47. #
  48. # See the file "Documentation/sparse.txt" for more details, including
  49. # where to get the "sparse" utility.
  50. ifdef C
  51. ifeq ("$(origin C)", "command line")
  52. KBUILD_CHECKSRC = $(C)
  53. endif
  54. endif
  55. ifndef KBUILD_CHECKSRC
  56. KBUILD_CHECKSRC = 0
  57. endif
  58. # Use make M=dir to specify directory of external module to build
  59. # Old syntax make ... SUBDIRS=$PWD is still supported
  60. # Setting the environment variable KBUILD_EXTMOD take precedence
  61. ifdef SUBDIRS
  62. KBUILD_EXTMOD ?= $(SUBDIRS)
  63. endif
  64. ifdef M
  65. ifeq ("$(origin M)", "command line")
  66. KBUILD_EXTMOD := $(M)
  67. endif
  68. endif
  69. # kbuild supports saving output files in a separate directory.
  70. # To locate output files in a separate directory two syntaxes are supported.
  71. # In both cases the working directory must be the root of the kernel src.
  72. # 1) O=
  73. # Use "make O=dir/to/store/output/files/"
  74. #
  75. # 2) Set KBUILD_OUTPUT
  76. # Set the environment variable KBUILD_OUTPUT to point to the directory
  77. # where the output files shall be placed.
  78. # export KBUILD_OUTPUT=dir/to/store/output/files/
  79. # make
  80. #
  81. # The O= assignment takes precedence over the KBUILD_OUTPUT environment
  82. # variable.
  83. # KBUILD_SRC is set on invocation of make in OBJ directory
  84. # KBUILD_SRC is not intended to be used by the regular user (for now)
  85. ifeq ($(KBUILD_SRC),)
  86. # OK, Make called in directory where kernel src resides
  87. # Do we want to locate output files in a separate directory?
  88. ifdef O
  89. ifeq ("$(origin O)", "command line")
  90. KBUILD_OUTPUT := $(O)
  91. endif
  92. endif
  93. # That's our default target when none is given on the command line
  94. PHONY := _all
  95. _all:
  96. # Cancel implicit rules on top Makefile
  97. $(CURDIR)/Makefile Makefile: ;
  98. ifneq ($(KBUILD_OUTPUT),)
  99. # Invoke a second make in the output directory, passing relevant variables
  100. # check that the output directory actually exists
  101. saved-output := $(KBUILD_OUTPUT)
  102. KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
  103. $(if $(KBUILD_OUTPUT),, \
  104. $(error output directory "$(saved-output)" does not exist))
  105. PHONY += $(MAKECMDGOALS) sub-make
  106. $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
  107. $(Q)@:
  108. sub-make: FORCE
  109. $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
  110. KBUILD_SRC=$(CURDIR) \
  111. KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
  112. $(filter-out _all sub-make,$(MAKECMDGOALS))
  113. # Leave processing to above invocation of make
  114. skip-makefile := 1
  115. endif # ifneq ($(KBUILD_OUTPUT),)
  116. endif # ifeq ($(KBUILD_SRC),)
  117. # We process the rest of the Makefile if this is the final invocation of make
  118. ifeq ($(skip-makefile),)
  119. # If building an external module we do not care about the all: rule
  120. # but instead _all depend on modules
  121. PHONY += all
  122. ifeq ($(KBUILD_EXTMOD),)
  123. _all: all
  124. else
  125. _all: modules
  126. endif
  127. srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
  128. TOPDIR := $(srctree)
  129. # FIXME - TOPDIR is obsolete, use srctree/objtree
  130. objtree := $(CURDIR)
  131. src := $(srctree)
  132. obj := $(objtree)
  133. VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
  134. export srctree objtree VPATH TOPDIR
  135. # SUBARCH tells the usermode build what the underlying arch is. That is set
  136. # first, and if a usermode build is happening, the "ARCH=um" on the command
  137. # line overrides the setting of ARCH below. If a native build is happening,
  138. # then ARCH is assigned, getting whatever value it gets normally, and
  139. # SUBARCH is subsequently ignored.
  140. SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
  141. -e s/arm.*/arm/ -e s/sa110/arm/ \
  142. -e s/s390x/s390/ -e s/parisc64/parisc/ \
  143. -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
  144. -e s/sh[234].*/sh/ )
  145. # Cross compiling and selecting different set of gcc/bin-utils
  146. # ---------------------------------------------------------------------------
  147. #
  148. # When performing cross compilation for other architectures ARCH shall be set
  149. # to the target architecture. (See arch/* for the possibilities).
  150. # ARCH can be set during invocation of make:
  151. # make ARCH=ia64
  152. # Another way is to have ARCH set in the environment.
  153. # The default ARCH is the host where make is executed.
  154. # CROSS_COMPILE specify the prefix used for all executables used
  155. # during compilation. Only gcc and related bin-utils executables
  156. # are prefixed with $(CROSS_COMPILE).
  157. # CROSS_COMPILE can be set on the command line
  158. # make CROSS_COMPILE=ia64-linux-
  159. # Alternatively CROSS_COMPILE can be set in the environment.
  160. # Default value for CROSS_COMPILE is not to prefix executables
  161. # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
  162. ARCH ?= $(SUBARCH)
  163. CROSS_COMPILE ?=
  164. # Architecture as present in compile.h
  165. UTS_MACHINE := $(ARCH)
  166. SRCARCH := $(ARCH)
  167. # Additional ARCH settings for x86
  168. ifeq ($(ARCH),i386)
  169. SRCARCH := x86
  170. endif
  171. ifeq ($(ARCH),x86_64)
  172. SRCARCH := x86
  173. endif
  174. KCONFIG_CONFIG ?= .config
  175. # SHELL used by kbuild
  176. CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
  177. else if [ -x /bin/bash ]; then echo /bin/bash; \
  178. else echo sh; fi ; fi)
  179. HOSTCC = gcc
  180. HOSTCXX = g++
  181. HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
  182. HOSTCXXFLAGS = -O2
  183. # Decide whether to build built-in, modular, or both.
  184. # Normally, just do built-in.
  185. KBUILD_MODULES :=
  186. KBUILD_BUILTIN := 1
  187. # If we have only "make modules", don't compile built-in objects.
  188. # When we're building modules with modversions, we need to consider
  189. # the built-in objects during the descend as well, in order to
  190. # make sure the checksums are up to date before we record them.
  191. ifeq ($(MAKECMDGOALS),modules)
  192. KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
  193. endif
  194. # If we have "make <whatever> modules", compile modules
  195. # in addition to whatever we do anyway.
  196. # Just "make" or "make all" shall build modules as well
  197. ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
  198. KBUILD_MODULES := 1
  199. endif
  200. ifeq ($(MAKECMDGOALS),)
  201. KBUILD_MODULES := 1
  202. endif
  203. export KBUILD_MODULES KBUILD_BUILTIN
  204. export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
  205. # Beautify output
  206. # ---------------------------------------------------------------------------
  207. #
  208. # Normally, we echo the whole command before executing it. By making
  209. # that echo $($(quiet)$(cmd)), we now have the possibility to set
  210. # $(quiet) to choose other forms of output instead, e.g.
  211. #
  212. # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
  213. # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
  214. #
  215. # If $(quiet) is empty, the whole command will be printed.
  216. # If it is set to "quiet_", only the short version will be printed.
  217. # If it is set to "silent_", nothing will be printed at all, since
  218. # the variable $(silent_cmd_cc_o_c) doesn't exist.
  219. #
  220. # A simple variant is to prefix commands with $(Q) - that's useful
  221. # for commands that shall be hidden in non-verbose mode.
  222. #
  223. # $(Q)ln $@ :<
  224. #
  225. # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
  226. # If KBUILD_VERBOSE equals 1 then the above command is displayed.
  227. ifeq ($(KBUILD_VERBOSE),1)
  228. quiet =
  229. Q =
  230. else
  231. quiet=quiet_
  232. Q = @
  233. endif
  234. # If the user is running make -s (silent mode), suppress echoing of
  235. # commands
  236. ifneq ($(findstring s,$(MAKEFLAGS)),)
  237. quiet=silent_
  238. endif
  239. export quiet Q KBUILD_VERBOSE
  240. # Look for make include files relative to root of kernel src
  241. MAKEFLAGS += --include-dir=$(srctree)
  242. # We need some generic definitions (do not try to remake the file).
  243. $(srctree)/scripts/Kbuild.include: ;
  244. include $(srctree)/scripts/Kbuild.include
  245. # Make variables (CC, etc...)
  246. AS = $(CROSS_COMPILE)as
  247. LD = $(CROSS_COMPILE)ld
  248. CC = $(CROSS_COMPILE)gcc
  249. CPP = $(CC) -E
  250. AR = $(CROSS_COMPILE)ar
  251. NM = $(CROSS_COMPILE)nm
  252. STRIP = $(CROSS_COMPILE)strip
  253. OBJCOPY = $(CROSS_COMPILE)objcopy
  254. OBJDUMP = $(CROSS_COMPILE)objdump
  255. AWK = awk
  256. GENKSYMS = scripts/genksyms/genksyms
  257. DEPMOD = /sbin/depmod
  258. KALLSYMS = scripts/kallsyms
  259. PERL = perl
  260. CHECK = sparse
  261. CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
  262. MODFLAGS = -DMODULE
  263. CFLAGS_MODULE = $(MODFLAGS)
  264. AFLAGS_MODULE = $(MODFLAGS)
  265. LDFLAGS_MODULE =
  266. CFLAGS_KERNEL =
  267. AFLAGS_KERNEL =
  268. # Use LINUXINCLUDE when you must reference the include/ directory.
  269. # Needed to be compatible with the O= option
  270. LINUXINCLUDE := -Iinclude \
  271. $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
  272. -include include/linux/autoconf.h
  273. KBUILD_CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
  274. KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
  275. -fno-strict-aliasing -fno-common \
  276. -Werror-implicit-function-declaration
  277. KBUILD_AFLAGS := -D__ASSEMBLY__
  278. # Read KERNELRELEASE from include/config/kernel.release (if it exists)
  279. KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
  280. KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
  281. export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
  282. export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
  283. export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE
  284. export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
  285. export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
  286. export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
  287. export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
  288. # When compiling out-of-tree modules, put MODVERDIR in the module
  289. # tree rather than in the kernel tree. The kernel tree might
  290. # even be read-only.
  291. export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
  292. # Files to ignore in find ... statements
  293. 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
  294. export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
  295. # ===========================================================================
  296. # Rules shared between *config targets and build targets
  297. # Basic helpers built in scripts/
  298. PHONY += scripts_basic
  299. scripts_basic:
  300. $(Q)$(MAKE) $(build)=scripts/basic
  301. # To avoid any implicit rule to kick in, define an empty command.
  302. scripts/basic/%: scripts_basic ;
  303. PHONY += outputmakefile
  304. # outputmakefile generates a Makefile in the output directory, if using a
  305. # separate output directory. This allows convenient use of make in the
  306. # output directory.
  307. outputmakefile:
  308. ifneq ($(KBUILD_SRC),)
  309. $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
  310. $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
  311. endif
  312. # To make sure we do not include .config for any of the *config targets
  313. # catch them early, and hand them over to scripts/kconfig/Makefile
  314. # It is allowed to specify more targets when calling make, including
  315. # mixing *config targets and build targets.
  316. # For example 'make oldconfig all'.
  317. # Detect when mixed targets is specified, and make a second invocation
  318. # of make so .config is not included in this case either (for *config).
  319. no-dot-config-targets := clean mrproper distclean \
  320. cscope TAGS tags help %docs check% \
  321. include/linux/version.h headers_% \
  322. kernelrelease kernelversion
  323. config-targets := 0
  324. mixed-targets := 0
  325. dot-config := 1
  326. ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
  327. ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
  328. dot-config := 0
  329. endif
  330. endif
  331. ifeq ($(KBUILD_EXTMOD),)
  332. ifneq ($(filter config %config,$(MAKECMDGOALS)),)
  333. config-targets := 1
  334. ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
  335. mixed-targets := 1
  336. endif
  337. endif
  338. endif
  339. ifeq ($(mixed-targets),1)
  340. # ===========================================================================
  341. # We're called with mixed targets (*config and build targets).
  342. # Handle them one by one.
  343. %:: FORCE
  344. $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
  345. else
  346. ifeq ($(config-targets),1)
  347. # ===========================================================================
  348. # *config targets only - make sure prerequisites are updated, and descend
  349. # in scripts/kconfig to make the *config target
  350. # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
  351. # KBUILD_DEFCONFIG may point out an alternative default configuration
  352. # used for 'make defconfig'
  353. include $(srctree)/arch/$(SRCARCH)/Makefile
  354. export KBUILD_DEFCONFIG
  355. config %config: scripts_basic outputmakefile FORCE
  356. $(Q)mkdir -p include/linux include/config
  357. $(Q)$(MAKE) $(build)=scripts/kconfig $@
  358. else
  359. # ===========================================================================
  360. # Build targets only - this includes vmlinux, arch specific targets, clean
  361. # targets and others. In general all targets except *config targets.
  362. ifeq ($(KBUILD_EXTMOD),)
  363. # Additional helpers built in scripts/
  364. # Carefully list dependencies so we do not try to build scripts twice
  365. # in parallel
  366. PHONY += scripts
  367. scripts: scripts_basic include/config/auto.conf
  368. $(Q)$(MAKE) $(build)=$(@)
  369. # Objects we will link into vmlinux / subdirs we need to visit
  370. init-y := init/
  371. drivers-y := drivers/ sound/
  372. net-y := net/
  373. libs-y := lib/
  374. core-y := usr/
  375. endif # KBUILD_EXTMOD
  376. ifeq ($(dot-config),1)
  377. # Read in config
  378. -include include/config/auto.conf
  379. ifeq ($(KBUILD_EXTMOD),)
  380. # Read in dependencies to all Kconfig* files, make sure to run
  381. # oldconfig if changes are detected.
  382. -include include/config/auto.conf.cmd
  383. # To avoid any implicit rule to kick in, define an empty command
  384. $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
  385. # If .config is newer than include/config/auto.conf, someone tinkered
  386. # with it and forgot to run make oldconfig.
  387. # if auto.conf.cmd is missing then we are probably in a cleaned tree so
  388. # we execute the config step to be sure to catch updated Kconfig files
  389. include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
  390. $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
  391. else
  392. # external modules needs include/linux/autoconf.h and include/config/auto.conf
  393. # but do not care if they are up-to-date. Use auto.conf to trigger the test
  394. PHONY += include/config/auto.conf
  395. include/config/auto.conf:
  396. $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \
  397. echo; \
  398. echo " ERROR: Kernel configuration is invalid."; \
  399. echo " include/linux/autoconf.h or $@ are missing."; \
  400. echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
  401. echo; \
  402. /bin/false)
  403. endif # KBUILD_EXTMOD
  404. else
  405. # Dummy target needed, because used as prerequisite
  406. include/config/auto.conf: ;
  407. endif # $(dot-config)
  408. # The all: target is the default when no target is given on the
  409. # command line.
  410. # This allow a user to issue only 'make' to build a kernel including modules
  411. # Defaults vmlinux but it is usually overridden in the arch makefile
  412. all: vmlinux
  413. ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
  414. KBUILD_CFLAGS += -Os
  415. else
  416. KBUILD_CFLAGS += -O2
  417. endif
  418. include $(srctree)/arch/$(SRCARCH)/Makefile
  419. ifdef CONFIG_FRAME_POINTER
  420. KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
  421. else
  422. KBUILD_CFLAGS += -fomit-frame-pointer
  423. endif
  424. ifdef CONFIG_DEBUG_INFO
  425. KBUILD_CFLAGS += -g
  426. KBUILD_AFLAGS += -gdwarf-2
  427. endif
  428. # Force gcc to behave correct even for buggy distributions
  429. KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
  430. # arch Makefile may override CC so keep this after arch Makefile is included
  431. NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
  432. CHECKFLAGS += $(NOSTDINC_FLAGS)
  433. # warn about C99 declaration after statement
  434. KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
  435. # disable pointer signed / unsigned warnings in gcc 4.0
  436. KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,)
  437. # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
  438. # But warn user when we do so
  439. warn-assign = \
  440. $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)")
  441. ifneq ($(KCPPFLAGS),)
  442. $(call warn-assign,CPPFLAGS)
  443. KBUILD_CPPFLAGS += $(KCPPFLAGS)
  444. endif
  445. ifneq ($(KAFLAGS),)
  446. $(call warn-assign,AFLAGS)
  447. KBUILD_AFLAGS += $(KAFLAGS)
  448. endif
  449. ifneq ($(KCFLAGS),)
  450. $(call warn-assign,CFLAGS)
  451. KBUILD_CFLAGS += $(KCFLAGS)
  452. endif
  453. # Use --build-id when available.
  454. LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
  455. $(call ld-option, -Wl$(comma)--build-id,))
  456. LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
  457. LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
  458. # Default kernel image to build when no specific target is given.
  459. # KBUILD_IMAGE may be overruled on the command line or
  460. # set in the environment
  461. # Also any assignments in arch/$(ARCH)/Makefile take precedence over
  462. # this default value
  463. export KBUILD_IMAGE ?= vmlinux
  464. #
  465. # INSTALL_PATH specifies where to place the updated kernel and system map
  466. # images. Default is /boot, but you can set it to other values
  467. export INSTALL_PATH ?= /boot
  468. #
  469. # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
  470. # relocations required by build roots. This is not defined in the
  471. # makefile but the argument can be passed to make if needed.
  472. #
  473. MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
  474. export MODLIB
  475. #
  476. # INSTALL_MOD_STRIP, if defined, will cause modules to be
  477. # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
  478. # the default option --strip-debug will be used. Otherwise,
  479. # INSTALL_MOD_STRIP will used as the options to the strip command.
  480. ifdef INSTALL_MOD_STRIP
  481. ifeq ($(INSTALL_MOD_STRIP),1)
  482. mod_strip_cmd = $(STRIP) --strip-debug
  483. else
  484. mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
  485. endif # INSTALL_MOD_STRIP=1
  486. else
  487. mod_strip_cmd = true
  488. endif # INSTALL_MOD_STRIP
  489. export mod_strip_cmd
  490. ifeq ($(KBUILD_EXTMOD),)
  491. core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
  492. vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
  493. $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
  494. $(net-y) $(net-m) $(libs-y) $(libs-m)))
  495. vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
  496. $(init-n) $(init-) \
  497. $(core-n) $(core-) $(drivers-n) $(drivers-) \
  498. $(net-n) $(net-) $(libs-n) $(libs-))))
  499. init-y := $(patsubst %/, %/built-in.o, $(init-y))
  500. core-y := $(patsubst %/, %/built-in.o, $(core-y))
  501. drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
  502. net-y := $(patsubst %/, %/built-in.o, $(net-y))
  503. libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
  504. libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
  505. libs-y := $(libs-y1) $(libs-y2)
  506. # Build vmlinux
  507. # ---------------------------------------------------------------------------
  508. # vmlinux is built from the objects selected by $(vmlinux-init) and
  509. # $(vmlinux-main). Most are built-in.o files from top-level directories
  510. # in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
  511. # Ordering when linking is important, and $(vmlinux-init) must be first.
  512. #
  513. # vmlinux
  514. # ^
  515. # |
  516. # +-< $(vmlinux-init)
  517. # | +--< init/version.o + more
  518. # |
  519. # +--< $(vmlinux-main)
  520. # | +--< driver/built-in.o mm/built-in.o + more
  521. # |
  522. # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
  523. #
  524. # vmlinux version (uname -v) cannot be updated during normal
  525. # descending-into-subdirs phase since we do not yet know if we need to
  526. # update vmlinux.
  527. # Therefore this step is delayed until just before final link of vmlinux -
  528. # except in the kallsyms case where it is done just before adding the
  529. # symbols to the kernel.
  530. #
  531. # System.map is generated to document addresses of all kernel symbols
  532. vmlinux-init := $(head-y) $(init-y)
  533. vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
  534. vmlinux-all := $(vmlinux-init) $(vmlinux-main)
  535. vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds
  536. export KBUILD_VMLINUX_OBJS := $(vmlinux-all)
  537. # Rule to link vmlinux - also used during CONFIG_KALLSYMS
  538. # May be overridden by arch/$(ARCH)/Makefile
  539. quiet_cmd_vmlinux__ ?= LD $@
  540. cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
  541. -T $(vmlinux-lds) $(vmlinux-init) \
  542. --start-group $(vmlinux-main) --end-group \
  543. $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^)
  544. # Generate new vmlinux version
  545. quiet_cmd_vmlinux_version = GEN .version
  546. cmd_vmlinux_version = set -e; \
  547. if [ ! -r .version ]; then \
  548. rm -f .version; \
  549. echo 1 >.version; \
  550. else \
  551. mv .version .old_version; \
  552. expr 0$$(cat .old_version) + 1 >.version; \
  553. fi; \
  554. $(MAKE) $(build)=init
  555. # Generate System.map
  556. quiet_cmd_sysmap = SYSMAP
  557. cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
  558. # Link of vmlinux
  559. # If CONFIG_KALLSYMS is set .version is already updated
  560. # Generate System.map and verify that the content is consistent
  561. # Use + in front of the vmlinux_version rule to silent warning with make -j2
  562. # First command is ':' to allow us to use + in front of the rule
  563. define rule_vmlinux__
  564. :
  565. $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
  566. $(call cmd,vmlinux__)
  567. $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
  568. $(Q)$(if $($(quiet)cmd_sysmap), \
  569. echo ' $($(quiet)cmd_sysmap) System.map' &&) \
  570. $(cmd_sysmap) $@ System.map; \
  571. if [ $$? -ne 0 ]; then \
  572. rm -f $@; \
  573. /bin/false; \
  574. fi;
  575. $(verify_kallsyms)
  576. endef
  577. ifdef CONFIG_KALLSYMS
  578. # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
  579. # It's a three stage process:
  580. # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
  581. # empty
  582. # Running kallsyms on that gives us .tmp_kallsyms1.o with
  583. # the right size - vmlinux version (uname -v) is updated during this step
  584. # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
  585. # but due to the added section, some addresses have shifted.
  586. # From here, we generate a correct .tmp_kallsyms2.o
  587. # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
  588. # o Verify that the System.map from vmlinux matches the map from
  589. # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
  590. # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
  591. # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
  592. # temporary bypass to allow the kernel to be built while the
  593. # maintainers work out what went wrong with kallsyms.
  594. ifdef CONFIG_KALLSYMS_EXTRA_PASS
  595. last_kallsyms := 3
  596. else
  597. last_kallsyms := 2
  598. endif
  599. kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
  600. define verify_kallsyms
  601. $(Q)$(if $($(quiet)cmd_sysmap), \
  602. echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
  603. $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
  604. $(Q)cmp -s System.map .tmp_System.map || \
  605. (echo Inconsistent kallsyms data; \
  606. echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
  607. rm .tmp_kallsyms* ; /bin/false )
  608. endef
  609. # Update vmlinux version before link
  610. # Use + in front of this rule to silent warning about make -j1
  611. # First command is ':' to allow us to use + in front of this rule
  612. cmd_ksym_ld = $(cmd_vmlinux__)
  613. define rule_ksym_ld
  614. :
  615. +$(call cmd,vmlinux_version)
  616. $(call cmd,vmlinux__)
  617. $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
  618. endef
  619. # Generate .S file with all kernel symbols
  620. quiet_cmd_kallsyms = KSYM $@
  621. cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
  622. $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
  623. .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
  624. $(call if_changed_dep,as_o_S)
  625. .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
  626. $(call cmd,kallsyms)
  627. # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
  628. .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
  629. $(call if_changed_rule,ksym_ld)
  630. .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
  631. $(call if_changed,vmlinux__)
  632. .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
  633. $(call if_changed,vmlinux__)
  634. # Needs to visit scripts/ before $(KALLSYMS) can be used.
  635. $(KALLSYMS): scripts ;
  636. # Generate some data for debugging strange kallsyms problems
  637. debug_kallsyms: .tmp_map$(last_kallsyms)
  638. .tmp_map%: .tmp_vmlinux% FORCE
  639. ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
  640. .tmp_map3: .tmp_map2
  641. .tmp_map2: .tmp_map1
  642. endif # ifdef CONFIG_KALLSYMS
  643. # Do modpost on a prelinked vmlinux. The finally linked vmlinux has
  644. # relevant sections renamed as per the linker script.
  645. quiet_cmd_vmlinux-modpost = LD $@
  646. cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \
  647. $(vmlinux-init) --start-group $(vmlinux-main) --end-group \
  648. $(filter-out $(vmlinux-init) $(vmlinux-main) $(vmlinux-lds) FORCE ,$^)
  649. define rule_vmlinux-modpost
  650. :
  651. +$(call cmd,vmlinux-modpost)
  652. $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
  653. $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd
  654. endef
  655. # vmlinux image - including updated kernel symbols
  656. vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) vmlinux.o FORCE
  657. ifdef CONFIG_HEADERS_CHECK
  658. $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
  659. endif
  660. ifdef CONFIG_SAMPLES
  661. $(Q)$(MAKE) $(build)=samples
  662. endif
  663. $(call vmlinux-modpost)
  664. $(call if_changed_rule,vmlinux__)
  665. $(Q)rm -f .old_version
  666. vmlinux.o: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
  667. $(call if_changed_rule,vmlinux-modpost)
  668. # The actual objects are generated when descending,
  669. # make sure no implicit rule kicks in
  670. $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
  671. # Handle descending into subdirectories listed in $(vmlinux-dirs)
  672. # Preset locale variables to speed up the build process. Limit locale
  673. # tweaks to this spot to avoid wrong language settings when running
  674. # make menuconfig etc.
  675. # Error messages still appears in the original language
  676. PHONY += $(vmlinux-dirs)
  677. $(vmlinux-dirs): prepare scripts
  678. $(Q)$(MAKE) $(build)=$@
  679. # Build the kernel release string
  680. #
  681. # The KERNELRELEASE value built here is stored in the file
  682. # include/config/kernel.release, and is used when executing several
  683. # make targets, such as "make install" or "make modules_install."
  684. #
  685. # The eventual kernel release string consists of the following fields,
  686. # shown in a hierarchical format to show how smaller parts are concatenated
  687. # to form the larger and final value, with values coming from places like
  688. # the Makefile, kernel config options, make command line options and/or
  689. # SCM tag information.
  690. #
  691. # $(KERNELVERSION)
  692. # $(VERSION) eg, 2
  693. # $(PATCHLEVEL) eg, 6
  694. # $(SUBLEVEL) eg, 18
  695. # $(EXTRAVERSION) eg, -rc6
  696. # $(localver-full)
  697. # $(localver)
  698. # localversion* (files without backups, containing '~')
  699. # $(CONFIG_LOCALVERSION) (from kernel config setting)
  700. # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set)
  701. # ./scripts/setlocalversion (SCM tag, if one exists)
  702. # $(LOCALVERSION) (from make command line if provided)
  703. #
  704. # Note how the final $(localver-auto) string is included *only* if the
  705. # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the
  706. # moment, only git is supported but other SCMs can edit the script
  707. # scripts/setlocalversion and add the appropriate checks as needed.
  708. pattern = ".*/localversion[^~]*"
  709. string = $(shell cat /dev/null \
  710. `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`)
  711. localver = $(subst $(space),, $(string) \
  712. $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
  713. # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
  714. # and if the SCM is know a tag from the SCM is appended.
  715. # The appended tag is determined by the SCM used.
  716. #
  717. # Currently, only git is supported.
  718. # Other SCMs can edit scripts/setlocalversion and add the appropriate
  719. # checks as needed.
  720. ifdef CONFIG_LOCALVERSION_AUTO
  721. _localver-auto = $(shell $(CONFIG_SHELL) \
  722. $(srctree)/scripts/setlocalversion $(srctree))
  723. localver-auto = $(LOCALVERSION)$(_localver-auto)
  724. endif
  725. localver-full = $(localver)$(localver-auto)
  726. # Store (new) KERNELRELASE string in include/config/kernel.release
  727. kernelrelease = $(KERNELVERSION)$(localver-full)
  728. include/config/kernel.release: include/config/auto.conf FORCE
  729. $(Q)rm -f $@
  730. $(Q)echo $(kernelrelease) > $@
  731. # Things we need to do before we recursively start building the kernel
  732. # or the modules are listed in "prepare".
  733. # A multi level approach is used. prepareN is processed before prepareN-1.
  734. # archprepare is used in arch Makefiles and when processed asm symlink,
  735. # version.h and scripts_basic is processed / created.
  736. # Listed in dependency order
  737. PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
  738. # prepare3 is used to check if we are building in a separate output directory,
  739. # and if so do:
  740. # 1) Check that make has not been executed in the kernel src $(srctree)
  741. # 2) Create the include2 directory, used for the second asm symlink
  742. prepare3: include/config/kernel.release
  743. ifneq ($(KBUILD_SRC),)
  744. @echo ' Using $(srctree) as source for kernel'
  745. $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
  746. echo " $(srctree) is not clean, please run 'make mrproper'";\
  747. echo " in the '$(srctree)' directory.";\
  748. /bin/false; \
  749. fi;
  750. $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
  751. $(Q)ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm
  752. endif
  753. # prepare2 creates a makefile if using a separate output directory
  754. prepare2: prepare3 outputmakefile
  755. prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
  756. include/asm include/config/auto.conf
  757. $(cmd_crmodverdir)
  758. archprepare: prepare1 scripts_basic
  759. prepare0: archprepare FORCE
  760. $(Q)$(MAKE) $(build)=.
  761. $(Q)$(MAKE) $(build)=. missing-syscalls
  762. # All the preparing..
  763. prepare: prepare0
  764. # Leave this as default for preprocessing vmlinux.lds.S, which is now
  765. # done in arch/$(ARCH)/kernel/Makefile
  766. export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
  767. # The asm symlink changes when $(ARCH) changes.
  768. # Detect this and ask user to run make mrproper
  769. include/asm: FORCE
  770. $(Q)set -e; asmlink=`readlink include/asm | cut -d '-' -f 2`; \
  771. if [ -L include/asm ]; then \
  772. if [ "$$asmlink" != "$(SRCARCH)" ]; then \
  773. echo "ERROR: the symlink $@ points to asm-$$asmlink but asm-$(SRCARCH) was expected"; \
  774. echo " set ARCH or save .config and run 'make mrproper' to fix it"; \
  775. exit 1; \
  776. fi; \
  777. else \
  778. echo ' SYMLINK $@ -> include/asm-$(SRCARCH)'; \
  779. if [ ! -d include ]; then \
  780. mkdir -p include; \
  781. fi; \
  782. ln -fsn asm-$(SRCARCH) $@; \
  783. fi
  784. # Generate some files
  785. # ---------------------------------------------------------------------------
  786. # KERNELRELEASE can change from a few different places, meaning version.h
  787. # needs to be updated, so this check is forced on all builds
  788. uts_len := 64
  789. define filechk_utsrelease.h
  790. if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
  791. echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
  792. exit 1; \
  793. fi; \
  794. (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
  795. endef
  796. define filechk_version.h
  797. (echo \#define LINUX_VERSION_CODE $(shell \
  798. expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \
  799. echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
  800. endef
  801. include/linux/version.h: $(srctree)/Makefile FORCE
  802. $(call filechk,version.h)
  803. include/linux/utsrelease.h: include/config/kernel.release FORCE
  804. $(call filechk,utsrelease.h)
  805. # ---------------------------------------------------------------------------
  806. PHONY += depend dep
  807. depend dep:
  808. @echo '*** Warning: make $@ is unnecessary now.'
  809. # ---------------------------------------------------------------------------
  810. # Kernel headers
  811. INSTALL_HDR_PATH=$(objtree)/usr
  812. export INSTALL_HDR_PATH
  813. HDRFILTER=generic i386 x86_64
  814. HDRARCHES=$(filter-out $(HDRFILTER),$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild)))
  815. PHONY += headers_install_all
  816. headers_install_all: include/linux/version.h scripts_basic FORCE
  817. $(Q)$(MAKE) $(build)=scripts scripts/unifdef
  818. $(Q)for arch in $(HDRARCHES); do \
  819. $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch ;\
  820. done
  821. PHONY += headers_install
  822. headers_install: include/linux/version.h scripts_basic FORCE
  823. @if [ ! -r $(srctree)/include/asm-$(SRCARCH)/Kbuild ]; then \
  824. echo '*** Error: Headers not exportable for this architecture ($(SRCARCH))'; \
  825. exit 1 ; fi
  826. $(Q)$(MAKE) $(build)=scripts scripts/unifdef
  827. $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst ARCH=$(SRCARCH) obj=include
  828. PHONY += headers_check_all
  829. headers_check_all: headers_install_all
  830. $(Q)for arch in $(HDRARCHES); do \
  831. $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch HDRCHECK=1 ;\
  832. done
  833. PHONY += headers_check
  834. headers_check: headers_install
  835. $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst ARCH=$(SRCARCH) obj=include HDRCHECK=1
  836. # ---------------------------------------------------------------------------
  837. # Modules
  838. ifdef CONFIG_MODULES
  839. # By default, build modules as well
  840. all: modules
  841. # Build modules
  842. PHONY += modules
  843. modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
  844. @echo ' Building modules, stage 2.';
  845. $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
  846. # Target to prepare building external modules
  847. PHONY += modules_prepare
  848. modules_prepare: prepare scripts
  849. # Target to install modules
  850. PHONY += modules_install
  851. modules_install: _modinst_ _modinst_post
  852. PHONY += _modinst_
  853. _modinst_:
  854. @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
  855. echo "Warning: you may need to install module-init-tools"; \
  856. echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
  857. sleep 1; \
  858. fi
  859. @rm -rf $(MODLIB)/kernel
  860. @rm -f $(MODLIB)/source
  861. @mkdir -p $(MODLIB)/kernel
  862. @ln -s $(srctree) $(MODLIB)/source
  863. @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
  864. rm -f $(MODLIB)/build ; \
  865. ln -s $(objtree) $(MODLIB)/build ; \
  866. fi
  867. $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
  868. # This depmod is only for convenience to give the initial
  869. # boot a modules.dep even before / is mounted read-write. However the
  870. # boot script depmod is the master version.
  871. PHONY += _modinst_post
  872. _modinst_post: _modinst_
  873. $(call cmd,depmod)
  874. else # CONFIG_MODULES
  875. # Modules not configured
  876. # ---------------------------------------------------------------------------
  877. modules modules_install: FORCE
  878. @echo
  879. @echo "The present kernel configuration has modules disabled."
  880. @echo "Type 'make config' and enable loadable module support."
  881. @echo "Then build a kernel with module support enabled."
  882. @echo
  883. @exit 1
  884. endif # CONFIG_MODULES
  885. ###
  886. # Cleaning is done on three levels.
  887. # make clean Delete most generated files
  888. # Leave enough to build external modules
  889. # make mrproper Delete the current configuration, and all generated files
  890. # make distclean Remove editor backup files, patch leftover files and the like
  891. # Directories & files removed with 'make clean'
  892. CLEAN_DIRS += $(MODVERDIR)
  893. CLEAN_FILES += vmlinux System.map \
  894. .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
  895. # Directories & files removed with 'make mrproper'
  896. MRPROPER_DIRS += include/config include2 usr/include
  897. MRPROPER_FILES += .config .config.old include/asm .version .old_version \
  898. include/linux/autoconf.h include/linux/version.h \
  899. include/linux/utsrelease.h \
  900. Module.symvers tags TAGS cscope*
  901. # clean - Delete most, but leave enough to build external modules
  902. #
  903. clean: rm-dirs := $(CLEAN_DIRS)
  904. clean: rm-files := $(CLEAN_FILES)
  905. clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
  906. PHONY += $(clean-dirs) clean archclean
  907. $(clean-dirs):
  908. $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
  909. clean: archclean $(clean-dirs)
  910. $(call cmd,rmdirs)
  911. $(call cmd,rmfiles)
  912. @find . $(RCS_FIND_IGNORE) \
  913. \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
  914. -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
  915. -o -name '*.symtypes' \) \
  916. -type f -print | xargs rm -f
  917. # mrproper - Delete all generated files, including .config
  918. #
  919. mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
  920. mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
  921. mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
  922. PHONY += $(mrproper-dirs) mrproper archmrproper
  923. $(mrproper-dirs):
  924. $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
  925. mrproper: clean archmrproper $(mrproper-dirs)
  926. $(call cmd,rmdirs)
  927. $(call cmd,rmfiles)
  928. # distclean
  929. #
  930. PHONY += distclean
  931. distclean: mrproper
  932. @find $(srctree) $(RCS_FIND_IGNORE) \
  933. \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
  934. -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
  935. -o -name '.*.rej' -o -size 0 \
  936. -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
  937. -type f -print | xargs rm -f
  938. # Packaging of the kernel to various formats
  939. # ---------------------------------------------------------------------------
  940. # rpm target kept for backward compatibility
  941. package-dir := $(srctree)/scripts/package
  942. %pkg: include/config/kernel.release FORCE
  943. $(Q)$(MAKE) $(build)=$(package-dir) $@
  944. rpm: include/config/kernel.release FORCE
  945. $(Q)$(MAKE) $(build)=$(package-dir) $@
  946. # Brief documentation of the typical targets used
  947. # ---------------------------------------------------------------------------
  948. boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
  949. boards := $(notdir $(boards))
  950. help:
  951. @echo 'Cleaning targets:'
  952. @echo ' clean - Remove most generated files but keep the config and'
  953. @echo ' enough build support to build external modules'
  954. @echo ' mrproper - Remove all generated files + config + various backup files'
  955. @echo ' distclean - mrproper + remove editor backup and patch files'
  956. @echo ''
  957. @echo 'Configuration targets:'
  958. @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
  959. @echo ''
  960. @echo 'Other generic targets:'
  961. @echo ' all - Build all targets marked with [*]'
  962. @echo '* vmlinux - Build the bare kernel'
  963. @echo '* modules - Build all modules'
  964. @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
  965. @echo ' dir/ - Build all files in dir and below'
  966. @echo ' dir/file.[ois] - Build specified target only'
  967. @echo ' dir/file.ko - Build module including final link'
  968. @echo ' rpm - Build a kernel as an RPM package'
  969. @echo ' tags/TAGS - Generate tags file for editors'
  970. @echo ' cscope - Generate cscope index'
  971. @echo ' kernelrelease - Output the release version string'
  972. @echo ' kernelversion - Output the version stored in Makefile'
  973. @if [ -r $(srctree)/include/asm-$(SRCARCH)/Kbuild ]; then \
  974. echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
  975. echo ' (default: $(INSTALL_HDR_PATH))'; \
  976. fi
  977. @echo ''
  978. @echo 'Static analysers'
  979. @echo ' checkstack - Generate a list of stack hogs'
  980. @echo ' namespacecheck - Name space analysis on compiled kernel'
  981. @echo ' export_report - List the usages of all exported symbols'
  982. @if [ -r $(srctree)/include/asm-$(SRCARCH)/Kbuild ]; then \
  983. echo ' headers_check - Sanity check on exported headers'; \
  984. fi
  985. @echo ''
  986. @echo 'Kernel packaging:'
  987. @$(MAKE) $(build)=$(package-dir) help
  988. @echo ''
  989. @echo 'Documentation targets:'
  990. @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
  991. @echo ''
  992. @echo 'Architecture specific targets ($(ARCH)):'
  993. @$(if $(archhelp),$(archhelp),\
  994. echo ' No architecture specific help defined for $(ARCH)')
  995. @echo ''
  996. @$(if $(boards), \
  997. $(foreach b, $(boards), \
  998. printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
  999. echo '')
  1000. @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
  1001. @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
  1002. @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
  1003. @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
  1004. @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
  1005. @echo ''
  1006. @echo 'Execute "make" or "make all" to build all targets marked with [*] '
  1007. @echo 'For further info see the ./README file'
  1008. # Documentation targets
  1009. # ---------------------------------------------------------------------------
  1010. %docs: scripts_basic FORCE
  1011. $(Q)$(MAKE) $(build)=Documentation/DocBook $@
  1012. else # KBUILD_EXTMOD
  1013. ###
  1014. # External module support.
  1015. # When building external modules the kernel used as basis is considered
  1016. # read-only, and no consistency checks are made and the make
  1017. # system is not used on the basis kernel. If updates are required
  1018. # in the basis kernel ordinary make commands (without M=...) must
  1019. # be used.
  1020. #
  1021. # The following are the only valid targets when building external
  1022. # modules.
  1023. # make M=dir clean Delete all automatically generated files
  1024. # make M=dir modules Make all modules in specified dir
  1025. # make M=dir Same as 'make M=dir modules'
  1026. # make M=dir modules_install
  1027. # Install the modules built in the module directory
  1028. # Assumes install directory is already created
  1029. # We are always building modules
  1030. KBUILD_MODULES := 1
  1031. PHONY += crmodverdir
  1032. crmodverdir:
  1033. $(cmd_crmodverdir)
  1034. PHONY += $(objtree)/Module.symvers
  1035. $(objtree)/Module.symvers:
  1036. @test -e $(objtree)/Module.symvers || ( \
  1037. echo; \
  1038. echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
  1039. echo " is missing; modules will have no dependencies and modversions."; \
  1040. echo )
  1041. module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
  1042. PHONY += $(module-dirs) modules
  1043. $(module-dirs): crmodverdir $(objtree)/Module.symvers
  1044. $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
  1045. modules: $(module-dirs)
  1046. @echo ' Building modules, stage 2.';
  1047. $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
  1048. PHONY += modules_install
  1049. modules_install: _emodinst_ _emodinst_post
  1050. install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
  1051. PHONY += _emodinst_
  1052. _emodinst_:
  1053. $(Q)mkdir -p $(MODLIB)/$(install-dir)
  1054. $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
  1055. PHONY += _emodinst_post
  1056. _emodinst_post: _emodinst_
  1057. $(call cmd,depmod)
  1058. clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
  1059. PHONY += $(clean-dirs) clean
  1060. $(clean-dirs):
  1061. $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
  1062. clean: rm-dirs := $(MODVERDIR)
  1063. clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
  1064. clean: $(clean-dirs)
  1065. $(call cmd,rmdirs)
  1066. $(call cmd,rmfiles)
  1067. @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
  1068. \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
  1069. -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
  1070. -type f -print | xargs rm -f
  1071. help:
  1072. @echo ' Building external modules.'
  1073. @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
  1074. @echo ''
  1075. @echo ' modules - default target, build the module(s)'
  1076. @echo ' modules_install - install the module'
  1077. @echo ' clean - remove generated files in module directory only'
  1078. @echo ''
  1079. # Dummies...
  1080. PHONY += prepare scripts
  1081. prepare: ;
  1082. scripts: ;
  1083. endif # KBUILD_EXTMOD
  1084. # Generate tags for editors
  1085. # ---------------------------------------------------------------------------
  1086. #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
  1087. #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
  1088. #Adding $(srctree) adds about 20M on i386 to the size of the output file!
  1089. ifeq ($(src),$(obj))
  1090. __srctree =
  1091. else
  1092. __srctree = $(srctree)/
  1093. endif
  1094. ifeq ($(ALLSOURCE_ARCHS),)
  1095. ifeq ($(ARCH),um)
  1096. ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
  1097. else
  1098. ALLINCLUDE_ARCHS := $(SRCARCH)
  1099. endif
  1100. else
  1101. #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.
  1102. ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
  1103. endif
  1104. ALLSOURCE_ARCHS := $(SRCARCH)
  1105. define find-sources
  1106. ( for arch in $(ALLSOURCE_ARCHS) ; do \
  1107. find $(__srctree)arch/$${arch} $(RCS_FIND_IGNORE) \
  1108. -name $1 -print; \
  1109. done ; \
  1110. find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
  1111. -name $1 -print; \
  1112. find $(__srctree)include $(RCS_FIND_IGNORE) \
  1113. \( -name config -o -name 'asm-*' \) -prune \
  1114. -o -name $1 -print; \
  1115. for arch in $(ALLINCLUDE_ARCHS) ; do \
  1116. find $(__srctree)include/asm-$${arch} $(RCS_FIND_IGNORE) \
  1117. -name $1 -print; \
  1118. done ; \
  1119. find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
  1120. -name $1 -print; \
  1121. find $(__srctree) $(RCS_FIND_IGNORE) \
  1122. \( -name include -o -name arch -o -name '.tmp_*' \) -prune -o \
  1123. -name $1 -print; \
  1124. )
  1125. endef
  1126. define all-sources
  1127. $(call find-sources,'*.[chS]')
  1128. endef
  1129. define all-kconfigs
  1130. $(call find-sources,'Kconfig*')
  1131. endef
  1132. define all-defconfigs
  1133. $(call find-sources,'defconfig')
  1134. endef
  1135. define xtags
  1136. if $1 --version 2>&1 | grep -iq exuberant; then \
  1137. $(all-sources) | xargs $1 -a \
  1138. -I __initdata,__exitdata,__acquires,__releases \
  1139. -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
  1140. --extra=+f --c-kinds=+px \
  1141. --regex-asm='/^ENTRY\(([^)]*)\).*/\1/'; \
  1142. $(all-kconfigs) | xargs $1 -a \
  1143. --langdef=kconfig \
  1144. --language-force=kconfig \
  1145. --regex-kconfig='/^[[:blank:]]*config[[:blank:]]+([[:alnum:]_]+)/\1/'; \
  1146. $(all-defconfigs) | xargs -r $1 -a \
  1147. --langdef=dotconfig \
  1148. --language-force=dotconfig \
  1149. --regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'; \
  1150. elif $1 --version 2>&1 | grep -iq emacs; then \
  1151. $(all-sources) | xargs $1 -a; \
  1152. $(all-kconfigs) | xargs $1 -a \
  1153. --regex='/^[ \t]*config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
  1154. $(all-defconfigs) | xargs -r $1 -a \
  1155. --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
  1156. else \
  1157. $(all-sources) | xargs $1 -a; \
  1158. fi
  1159. endef
  1160. quiet_cmd_cscope-file = FILELST cscope.files
  1161. cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
  1162. quiet_cmd_cscope = MAKE cscope.out
  1163. cmd_cscope = cscope -b
  1164. cscope: FORCE
  1165. $(call cmd,cscope-file)
  1166. $(call cmd,cscope)
  1167. quiet_cmd_TAGS = MAKE $@
  1168. define cmd_TAGS
  1169. rm -f $@; \
  1170. $(call xtags,etags)
  1171. endef
  1172. TAGS: FORCE
  1173. $(call cmd,TAGS)
  1174. quiet_cmd_tags = MAKE $@
  1175. define cmd_tags
  1176. rm -f $@; \
  1177. $(call xtags,ctags)
  1178. endef
  1179. tags: FORCE
  1180. $(call cmd,tags)
  1181. # Scripts to check various things for consistency
  1182. # ---------------------------------------------------------------------------
  1183. includecheck:
  1184. find * $(RCS_FIND_IGNORE) \
  1185. -name '*.[hcS]' -type f -print | sort \
  1186. | xargs $(PERL) -w scripts/checkincludes.pl
  1187. versioncheck:
  1188. find * $(RCS_FIND_IGNORE) \
  1189. -name '*.[hcS]' -type f -print | sort \
  1190. | xargs $(PERL) -w scripts/checkversion.pl
  1191. namespacecheck:
  1192. $(PERL) $(srctree)/scripts/namespace.pl
  1193. export_report:
  1194. $(PERL) $(srctree)/scripts/export_report.pl
  1195. endif #ifeq ($(config-targets),1)
  1196. endif #ifeq ($(mixed-targets),1)
  1197. PHONY += checkstack kernelrelease kernelversion
  1198. # UML needs a little special treatment here. It wants to use the host
  1199. # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
  1200. # else wants $(ARCH), including people doing cross-builds, which means
  1201. # that $(SUBARCH) doesn't work here.
  1202. ifeq ($(ARCH), um)
  1203. CHECKSTACK_ARCH := $(SUBARCH)
  1204. else
  1205. CHECKSTACK_ARCH := $(ARCH)
  1206. endif
  1207. checkstack:
  1208. $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
  1209. $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
  1210. kernelrelease:
  1211. $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
  1212. $(error kernelrelease not valid - run 'make prepare' to update it))
  1213. kernelversion:
  1214. @echo $(KERNELVERSION)
  1215. # Single targets
  1216. # ---------------------------------------------------------------------------
  1217. # Single targets are compatible with:
  1218. # - build whith mixed source and output
  1219. # - build with separate output dir 'make O=...'
  1220. # - external modules
  1221. #
  1222. # target-dir => where to store outputfile
  1223. # build-dir => directory in kernel source tree to use
  1224. ifeq ($(KBUILD_EXTMOD),)
  1225. build-dir = $(patsubst %/,%,$(dir $@))
  1226. target-dir = $(dir $@)
  1227. else
  1228. zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
  1229. build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
  1230. target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
  1231. endif
  1232. %.s: %.c prepare scripts FORCE
  1233. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1234. %.i: %.c prepare scripts FORCE
  1235. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1236. %.o: %.c prepare scripts FORCE
  1237. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1238. %.lst: %.c prepare scripts FORCE
  1239. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1240. %.s: %.S prepare scripts FORCE
  1241. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1242. %.o: %.S prepare scripts FORCE
  1243. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1244. %.symtypes: %.c prepare scripts FORCE
  1245. $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
  1246. # Modules
  1247. / %/: prepare scripts FORCE
  1248. $(cmd_crmodverdir)
  1249. $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
  1250. $(build)=$(build-dir)
  1251. %.ko: prepare scripts FORCE
  1252. $(cmd_crmodverdir)
  1253. $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
  1254. $(build)=$(build-dir) $(@:.ko=.o)
  1255. $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
  1256. # FIXME Should go into a make.lib or something
  1257. # ===========================================================================
  1258. quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
  1259. cmd_rmdirs = rm -rf $(rm-dirs)
  1260. quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
  1261. cmd_rmfiles = rm -f $(rm-files)
  1262. # Run depmod only is we have System.map and depmod is executable
  1263. # and we build for the host arch
  1264. quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
  1265. cmd_depmod = \
  1266. if [ -r System.map -a -x $(DEPMOD) ]; then \
  1267. $(DEPMOD) -ae -F System.map \
  1268. $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) -r) \
  1269. $(KERNELRELEASE); \
  1270. fi
  1271. # Create temporary dir for module support files
  1272. # clean it up only when building all modules
  1273. cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
  1274. $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
  1275. a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
  1276. $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \
  1277. $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
  1278. quiet_cmd_as_o_S = AS $@
  1279. cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
  1280. # read all saved command lines
  1281. targets := $(wildcard $(sort $(targets)))
  1282. cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
  1283. ifneq ($(cmd_files),)
  1284. $(cmd_files): ; # Do not try to update included dependency files
  1285. include $(cmd_files)
  1286. endif
  1287. # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
  1288. # Usage:
  1289. # $(Q)$(MAKE) $(clean)=dir
  1290. clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
  1291. endif # skip-makefile
  1292. PHONY += FORCE
  1293. FORCE:
  1294. # Declare the contents of the .PHONY variable as phony. We keep that
  1295. # information in a variable se we can use it in if_changed and friends.
  1296. .PHONY: $(PHONY)