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[PATCH] patch to init di_payload_format field in gfs2_dinode
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1 VERSION = 2
2 PATCHLEVEL = 6
3 SUBLEVEL = 18
4 EXTRAVERSION = -rc1
5 NAME=Crazed Snow-Weasel
6
7 # *DOCUMENTATION*
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.
12
13 # Do not print "Entering directory ..."
14 MAKEFLAGS += --no-print-directory
15
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
32 # To put more focus on warnings, be less verbose as default
33 # Use 'make V=1' to see the full commands
34
35 ifdef V
36 ifeq ("$(origin V)", "command line")
37 KBUILD_VERBOSE = $(V)
38 endif
39 endif
40 ifndef KBUILD_VERBOSE
41 KBUILD_VERBOSE = 0
42 endif
43
44 # Call checker as part of compilation of C files
45 # Use 'make C=1' to enable checking (sparse, by default)
46 # Override with 'make C=1 CHECK=checker_executable CHECKFLAGS=....'
47
48 ifdef C
49 ifeq ("$(origin C)", "command line")
50 KBUILD_CHECKSRC = $(C)
51 endif
52 endif
53 ifndef KBUILD_CHECKSRC
54 KBUILD_CHECKSRC = 0
55 endif
56
57 # Use make M=dir to specify directory of external module to build
58 # Old syntax make ... SUBDIRS=$PWD is still supported
59 # Setting the environment variable KBUILD_EXTMOD take precedence
60 ifdef SUBDIRS
61 KBUILD_EXTMOD ?= $(SUBDIRS)
62 endif
63 ifdef M
64 ifeq ("$(origin M)", "command line")
65 KBUILD_EXTMOD := $(M)
66 endif
67 endif
68
69
70 # kbuild supports saving output files in a separate directory.
71 # To locate output files in a separate directory two syntaxes are supported.
72 # In both cases the working directory must be the root of the kernel src.
73 # 1) O=
74 # Use "make O=dir/to/store/output/files/"
75 #
76 # 2) Set KBUILD_OUTPUT
77 # Set the environment variable KBUILD_OUTPUT to point to the directory
78 # where the output files shall be placed.
79 # export KBUILD_OUTPUT=dir/to/store/output/files/
80 # make
81 #
82 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
83 # variable.
84
85
86 # KBUILD_SRC is set on invocation of make in OBJ directory
87 # KBUILD_SRC is not intended to be used by the regular user (for now)
88 ifeq ($(KBUILD_SRC),)
89
90 # OK, Make called in directory where kernel src resides
91 # Do we want to locate output files in a separate directory?
92 ifdef O
93 ifeq ("$(origin O)", "command line")
94 KBUILD_OUTPUT := $(O)
95 endif
96 endif
97
98 # That's our default target when none is given on the command line
99 PHONY := _all
100 _all:
101
102 ifneq ($(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))
109
110 PHONY += $(MAKECMDGOALS)
111
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 $@
116
117 # Leave processing to above invocation of make
118 skip-makefile := 1
119 endif # ifneq ($(KBUILD_OUTPUT),)
120 endif # ifeq ($(KBUILD_SRC),)
121
122 # We process the rest of the Makefile if this is the final invocation of make
123 ifeq ($(skip-makefile),)
124
125 # If building an external module we do not care about the all: rule
126 # but instead _all depend on modules
127 PHONY += all
128 ifeq ($(KBUILD_EXTMOD),)
129 _all: all
130 else
131 _all: modules
132 endif
133
134 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
135 TOPDIR := $(srctree)
136 # FIXME - TOPDIR is obsolete, use srctree/objtree
137 objtree := $(CURDIR)
138 src := $(srctree)
139 obj := $(objtree)
140
141 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
142
143 export srctree objtree VPATH TOPDIR
144
145
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.
151
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/ )
156
157 # Cross compiling and selecting different set of gcc/bin-utils
158 # ---------------------------------------------------------------------------
159 #
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:
163 # make ARCH=ia64
164 # Another way is to have ARCH set in the environment.
165 # The default ARCH is the host where make is executed.
166
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
175
176 ARCH ?= $(SUBARCH)
177 CROSS_COMPILE ?=
178
179 # Architecture as present in compile.h
180 UTS_MACHINE := $(ARCH)
181
182 KCONFIG_CONFIG ?= .config
183
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)
188
189 HOSTCC = gcc
190 HOSTCXX = g++
191 HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
192 HOSTCXXFLAGS = -O2
193
194 # Decide whether to build built-in, modular, or both.
195 # Normally, just do built-in.
196
197 KBUILD_MODULES :=
198 KBUILD_BUILTIN := 1
199
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.
204
205 ifeq ($(MAKECMDGOALS),modules)
206 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
207 endif
208
209 # If we have "make <whatever> modules", compile modules
210 # in addition to whatever we do anyway.
211 # Just "make" or "make all" shall build modules as well
212
213 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
214 KBUILD_MODULES := 1
215 endif
216
217 ifeq ($(MAKECMDGOALS),)
218 KBUILD_MODULES := 1
219 endif
220
221 export KBUILD_MODULES KBUILD_BUILTIN
222 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
223
224 # Beautify output
225 # ---------------------------------------------------------------------------
226 #
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.
230 #
231 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
232 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
233 #
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.
238 #
239 # A simple variant is to prefix commands with $(Q) - that's useful
240 # for commands that shall be hidden in non-verbose mode.
241 #
242 # $(Q)ln $@ :<
243 #
244 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
245 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
246
247 ifeq ($(KBUILD_VERBOSE),1)
248 quiet =
249 Q =
250 else
251 quiet=quiet_
252 Q = @
253 endif
254
255 # If the user is running make -s (silent mode), suppress echoing of
256 # commands
257
258 ifneq ($(findstring s,$(MAKEFLAGS)),)
259 quiet=silent_
260 endif
261
262 export quiet Q KBUILD_VERBOSE
263
264
265 # Look for make include files relative to root of kernel src
266 MAKEFLAGS += --include-dir=$(srctree)
267
268 # We need some generic definitions
269 include $(srctree)/scripts/Kbuild.include
270
271 # Do not use make's built-in rules and variables
272 # This increases performance and avoid hard-to-debug behavour
273 MAKEFLAGS += -rR
274
275 # Make variables (CC, etc...)
276
277 AS = $(CROSS_COMPILE)as
278 LD = $(CROSS_COMPILE)ld
279 CC = $(CROSS_COMPILE)gcc
280 CPP = $(CC) -E
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
286 AWK = awk
287 GENKSYMS = scripts/genksyms/genksyms
288 DEPMOD = /sbin/depmod
289 KALLSYMS = scripts/kallsyms
290 PERL = perl
291 CHECK = sparse
292
293 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
294 MODFLAGS = -DMODULE
295 CFLAGS_MODULE = $(MODFLAGS)
296 AFLAGS_MODULE = $(MODFLAGS)
297 LDFLAGS_MODULE = -r
298 CFLAGS_KERNEL =
299 AFLAGS_KERNEL =
300
301
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
307
308 CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
309
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__
316
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)
320
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
325
326 export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
327 export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
328 export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
329
330 # When compiling out-of-tree modules, put MODVERDIR in the module
331 # tree rather than in the kernel tree. The kernel tree might
332 # even be read-only.
333 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
334
335 # Files to ignore in find ... statements
336
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
339
340 # ===========================================================================
341 # Rules shared between *config targets and build targets
342
343 # Basic helpers built in scripts/
344 PHONY += scripts_basic
345 scripts_basic:
346 $(Q)$(MAKE) $(build)=scripts/basic
347
348 # To avoid any implicit rule to kick in, define an empty command.
349 scripts/basic/%: scripts_basic ;
350
351 PHONY += outputmakefile
352 # outputmakefile generates a Makefile in the output directory, if using a
353 # separate output directory. This allows convenient use of make in the
354 # output directory.
355 outputmakefile:
356 ifneq ($(KBUILD_SRC),)
357 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
358 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
359 endif
360
361 # To make sure we do not include .config for any of the *config targets
362 # catch them early, and hand them over to scripts/kconfig/Makefile
363 # It is allowed to specify more targets when calling make, including
364 # mixing *config targets and build targets.
365 # For example 'make oldconfig all'.
366 # Detect when mixed targets is specified, and make a second invocation
367 # of make so .config is not included in this case either (for *config).
368
369 no-dot-config-targets := clean mrproper distclean \
370 cscope TAGS tags help %docs check% \
371 kernelrelease kernelversion
372
373 config-targets := 0
374 mixed-targets := 0
375 dot-config := 1
376
377 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
378 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
379 dot-config := 0
380 endif
381 endif
382
383 ifeq ($(KBUILD_EXTMOD),)
384 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
385 config-targets := 1
386 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
387 mixed-targets := 1
388 endif
389 endif
390 endif
391
392 ifeq ($(mixed-targets),1)
393 # ===========================================================================
394 # We're called with mixed targets (*config and build targets).
395 # Handle them one by one.
396
397 %:: FORCE
398 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
399
400 else
401 ifeq ($(config-targets),1)
402 # ===========================================================================
403 # *config targets only - make sure prerequisites are updated, and descend
404 # in scripts/kconfig to make the *config target
405
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
411
412 config %config: scripts_basic outputmakefile FORCE
413 $(Q)mkdir -p include/linux include/config
414 $(Q)$(MAKE) $(build)=scripts/kconfig $@
415
416 else
417 # ===========================================================================
418 # Build targets only - this includes vmlinux, arch specific targets, clean
419 # targets and others. In general all targets except *config targets.
420
421 ifeq ($(KBUILD_EXTMOD),)
422 # Additional helpers built in scripts/
423 # Carefully list dependencies so we do not try to build scripts twice
424 # in parallel
425 PHONY += scripts
426 scripts: scripts_basic include/config/auto.conf
427 $(Q)$(MAKE) $(build)=$(@)
428
429 # Objects we will link into vmlinux / subdirs we need to visit
430 init-y := init/
431 drivers-y := drivers/ sound/
432 net-y := net/
433 libs-y := lib/
434 core-y := usr/
435 endif # KBUILD_EXTMOD
436
437 ifeq ($(dot-config),1)
438 # In this section, we need .config
439
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
444
445 # To avoid any implicit rule to kick in, define an empty command
446 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
447
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
455 else
456 $(error kernel configuration not valid - run 'make prepare' in $(srctree) to update it)
457 endif
458
459 else
460 # Dummy target needed, because used as prerequisite
461 include/config/auto.conf: ;
462 endif
463
464 # The all: target is the default when no target is given on the
465 # command line.
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
468 all: vmlinux
469
470 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
471 CFLAGS += -Os
472 else
473 CFLAGS += -O2
474 endif
475
476 ifdef CONFIG_FRAME_POINTER
477 CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
478 else
479 CFLAGS += -fomit-frame-pointer
480 endif
481
482 ifdef CONFIG_UNWIND_INFO
483 CFLAGS += -fasynchronous-unwind-tables
484 endif
485
486 ifdef CONFIG_DEBUG_INFO
487 CFLAGS += -g
488 endif
489
490 include $(srctree)/arch/$(ARCH)/Makefile
491
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)
495
496 # warn about C99 declaration after statement
497 CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
498
499 # disable pointer signed / unsigned warnings in gcc 4.0
500 CFLAGS += $(call cc-option,-Wno-pointer-sign,)
501
502 # Default kernel image to build when no specific target is given.
503 # KBUILD_IMAGE may be overruled on the command line or
504 # set in the environment
505 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
506 # this default value
507 export KBUILD_IMAGE ?= vmlinux
508
509 #
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
513
514 #
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.
518 #
519
520 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
521 export MODLIB
522
523 #
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.
528
529 ifdef INSTALL_MOD_STRIP
530 ifeq ($(INSTALL_MOD_STRIP),1)
531 mod_strip_cmd = $(STRIP) --strip-debug
532 else
533 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
534 endif # INSTALL_MOD_STRIP=1
535 else
536 mod_strip_cmd = true
537 endif # INSTALL_MOD_STRIP
538 export mod_strip_cmd
539
540
541 ifeq ($(KBUILD_EXTMOD),)
542 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
543
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)))
547
548 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
549 $(init-n) $(init-) \
550 $(core-n) $(core-) $(drivers-n) $(drivers-) \
551 $(net-n) $(net-) $(libs-n) $(libs-))))
552
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)
560
561 # Build vmlinux
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.
567 #
568 # vmlinux
569 # ^
570 # |
571 # +-< $(vmlinux-init)
572 # | +--< init/version.o + more
573 # |
574 # +--< $(vmlinux-main)
575 # | +--< driver/built-in.o mm/built-in.o + more
576 # |
577 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
578 #
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
581 # update vmlinux.
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.
585 #
586 # System.map is generated to document addresses of all kernel symbols
587
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
592
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) $(vmlinux-main) FORCE ,$^)
600
601 # Generate new vmlinux version
602 quiet_cmd_vmlinux_version = GEN .version
603 cmd_vmlinux_version = set -e; \
604 if [ ! -r .version ]; then \
605 rm -f .version; \
606 echo 1 >.version; \
607 else \
608 mv .version .old_version; \
609 expr 0$$(cat .old_version) + 1 >.version; \
610 fi; \
611 $(MAKE) $(build)=init
612
613 # Generate System.map
614 quiet_cmd_sysmap = SYSMAP
615 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
616
617 # Link of vmlinux
618 # If CONFIG_KALLSYMS is set .version is already updated
619 # Generate System.map and verify that the content is consistent
620 # Use + in front of the vmlinux_version rule to silent warning with make -j2
621 # First command is ':' to allow us to use + in front of the rule
622 define rule_vmlinux__
623 :
624 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
625
626 $(call cmd,vmlinux__)
627 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
628
629 $(Q)$(if $($(quiet)cmd_sysmap), \
630 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
631 $(cmd_sysmap) $@ System.map; \
632 if [ $$? -ne 0 ]; then \
633 rm -f $@; \
634 /bin/false; \
635 fi;
636 $(verify_kallsyms)
637 endef
638
639
640 ifdef CONFIG_KALLSYMS
641 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
642 # It's a three stage process:
643 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
644 # empty
645 # Running kallsyms on that gives us .tmp_kallsyms1.o with
646 # the right size - vmlinux version (uname -v) is updated during this step
647 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
648 # but due to the added section, some addresses have shifted.
649 # From here, we generate a correct .tmp_kallsyms2.o
650 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
651 # o Verify that the System.map from vmlinux matches the map from
652 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
653 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
654 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
655 # temporary bypass to allow the kernel to be built while the
656 # maintainers work out what went wrong with kallsyms.
657
658 ifdef CONFIG_KALLSYMS_EXTRA_PASS
659 last_kallsyms := 3
660 else
661 last_kallsyms := 2
662 endif
663
664 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
665
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 )
674 endef
675
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 = $(cmd_vmlinux__)
680 define rule_ksym_ld
681 :
682 +$(call cmd,vmlinux_version)
683 $(call cmd,vmlinux__)
684 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
685 endef
686
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) > $@
691
692 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
693 $(call if_changed_dep,as_o_S)
694
695 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
696 $(call cmd,kallsyms)
697
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)
701
702 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
703 $(call if_changed,vmlinux__)
704
705 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
706 $(call if_changed,vmlinux__)
707
708 # Needs to visit scripts/ before $(KALLSYMS) can be used.
709 $(KALLSYMS): scripts ;
710
711 # Generate some data for debugging strange kallsyms problems
712 debug_kallsyms: .tmp_map$(last_kallsyms)
713
714 .tmp_map%: .tmp_vmlinux% FORCE
715 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
716
717 .tmp_map3: .tmp_map2
718
719 .tmp_map2: .tmp_map1
720
721 endif # ifdef CONFIG_KALLSYMS
722
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
727
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) ;
731
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
737
738 PHONY += $(vmlinux-dirs)
739 $(vmlinux-dirs): prepare scripts
740 $(Q)$(MAKE) $(build)=$@
741
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
745 #
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
749
750 nullstring :=
751 space := $(nullstring) # end of line
752
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)))
757
758 localver = $(subst $(space),, \
759 $(shell cat /dev/null $(_localver)) \
760 $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
761
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.
765 #
766 # Currently, only git is supported.
767 # Other SCMs can edit scripts/setlocalversion and add the appropriate
768 # checks as needed.
769 ifdef CONFIG_LOCALVERSION_AUTO
770 _localver-auto = $(shell $(CONFIG_SHELL) \
771 $(srctree)/scripts/setlocalversion $(srctree))
772 localver-auto = $(LOCALVERSION)$(_localver-auto)
773 endif
774
775 localver-full = $(localver)$(localver-auto)
776
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
780 $(Q)rm -f $@
781 $(Q)echo $(kernelrelease) > $@
782
783
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.
789
790 # Listed in dependency order
791 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
792
793 # prepare-all is deprecated, use prepare as valid replacement
794 PHONY += prepare-all
795
796 # prepare3 is used to check if we are building in a separate output directory,
797 # and if so do:
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.";\
806 /bin/false; \
807 fi;
808 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
809 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
810 endif
811
812 # prepare2 creates a makefile if using a separate output directory
813 prepare2: prepare3 outputmakefile
814
815 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \
816 include/asm include/config/auto.conf
817 ifneq ($(KBUILD_MODULES),)
818 $(Q)mkdir -p $(MODVERDIR)
819 $(Q)rm -f $(MODVERDIR)/*
820 endif
821
822 archprepare: prepare1 scripts_basic
823
824 prepare0: archprepare FORCE
825 $(Q)$(MAKE) $(build)=.
826
827 # All the preparing..
828 prepare prepare-all: prepare0
829
830 # Leave this as default for preprocessing vmlinux.lds.S, which is now
831 # done in arch/$(ARCH)/kernel/Makefile
832
833 export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
834
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.
838
839 include/asm:
840 @echo ' SYMLINK $@ -> include/asm-$(ARCH)'
841 $(Q)if [ ! -d include ]; then mkdir -p include; fi;
842 @ln -fsn asm-$(ARCH) $@
843
844 # Generate some files
845 # ---------------------------------------------------------------------------
846
847 # KERNELRELEASE can change from a few different places, meaning version.h
848 # needs to be updated, so this check is forced on all builds
849
850 uts_len := 64
851 define filechk_utsrelease.h
852 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
853 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
854 exit 1; \
855 fi; \
856 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
857 endef
858
859 define filechk_version.h
860 (echo \#define LINUX_VERSION_CODE $(shell \
861 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \
862 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
863 endef
864
865 include/linux/version.h: $(srctree)/Makefile FORCE
866 $(call filechk,version.h)
867
868 include/linux/utsrelease.h: include/config/kernel.release FORCE
869 $(call filechk,utsrelease.h)
870
871 # ---------------------------------------------------------------------------
872
873 PHONY += depend dep
874 depend dep:
875 @echo '*** Warning: make $@ is unnecessary now.'
876
877 # ---------------------------------------------------------------------------
878 # Kernel headers
879 INSTALL_HDR_PATH=$(MODLIB)/abi
880 export INSTALL_HDR_PATH
881
882 PHONY += headers_install
883 headers_install: include/linux/version.h
884 $(Q)unifdef -Ux /dev/null
885 $(Q)rm -rf $(INSTALL_HDR_PATH)/include
886 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include
887
888 PHONY += headers_check
889 headers_check: headers_install
890 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1
891
892 # ---------------------------------------------------------------------------
893 # Modules
894
895 ifdef CONFIG_MODULES
896
897 # By default, build modules as well
898
899 all: modules
900
901 # Build modules
902
903 PHONY += modules
904 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
905 @echo ' Building modules, stage 2.';
906 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
907
908
909 # Target to prepare building external modules
910 PHONY += modules_prepare
911 modules_prepare: prepare scripts
912
913 # Target to install modules
914 PHONY += modules_install
915 modules_install: _modinst_ _modinst_post
916
917 PHONY += _modinst_
918 _modinst_:
919 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
920 echo "Warning: you may need to install module-init-tools"; \
921 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
922 sleep 1; \
923 fi
924 @rm -rf $(MODLIB)/kernel
925 @rm -f $(MODLIB)/source
926 @mkdir -p $(MODLIB)/kernel
927 @ln -s $(srctree) $(MODLIB)/source
928 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
929 rm -f $(MODLIB)/build ; \
930 ln -s $(objtree) $(MODLIB)/build ; \
931 fi
932 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
933
934 # If System.map exists, run depmod. This deliberately does not have a
935 # dependency on System.map since that would run the dependency tree on
936 # vmlinux. This depmod is only for convenience to give the initial
937 # boot a modules.dep even before / is mounted read-write. However the
938 # boot script depmod is the master version.
939 ifeq "$(strip $(INSTALL_MOD_PATH))" ""
940 depmod_opts :=
941 else
942 depmod_opts := -b $(INSTALL_MOD_PATH) -r
943 endif
944 PHONY += _modinst_post
945 _modinst_post: _modinst_
946 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
947
948 else # CONFIG_MODULES
949
950 # Modules not configured
951 # ---------------------------------------------------------------------------
952
953 modules modules_install: FORCE
954 @echo
955 @echo "The present kernel configuration has modules disabled."
956 @echo "Type 'make config' and enable loadable module support."
957 @echo "Then build a kernel with module support enabled."
958 @echo
959 @exit 1
960
961 endif # CONFIG_MODULES
962
963 ###
964 # Cleaning is done on three levels.
965 # make clean Delete most generated files
966 # Leave enough to build external modules
967 # make mrproper Delete the current configuration, and all generated files
968 # make distclean Remove editor backup files, patch leftover files and the like
969
970 # Directories & files removed with 'make clean'
971 CLEAN_DIRS += $(MODVERDIR)
972 CLEAN_FILES += vmlinux System.map \
973 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
974
975 # Directories & files removed with 'make mrproper'
976 MRPROPER_DIRS += include/config include2
977 MRPROPER_FILES += .config .config.old include/asm .version .old_version \
978 include/linux/autoconf.h include/linux/version.h \
979 include/linux/utsrelease.h \
980 Module.symvers tags TAGS cscope*
981
982 # clean - Delete most, but leave enough to build external modules
983 #
984 clean: rm-dirs := $(CLEAN_DIRS)
985 clean: rm-files := $(CLEAN_FILES)
986 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
987
988 PHONY += $(clean-dirs) clean archclean
989 $(clean-dirs):
990 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
991
992 clean: archclean $(clean-dirs)
993 $(call cmd,rmdirs)
994 $(call cmd,rmfiles)
995 @find . $(RCS_FIND_IGNORE) \
996 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
997 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
998 -o -name '*.symtypes' \) \
999 -type f -print | xargs rm -f
1000
1001 # mrproper - Delete all generated files, including .config
1002 #
1003 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1004 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1005 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1006
1007 PHONY += $(mrproper-dirs) mrproper archmrproper
1008 $(mrproper-dirs):
1009 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1010
1011 mrproper: clean archmrproper $(mrproper-dirs)
1012 $(call cmd,rmdirs)
1013 $(call cmd,rmfiles)
1014
1015 # distclean
1016 #
1017 PHONY += distclean
1018
1019 distclean: mrproper
1020 @find $(srctree) $(RCS_FIND_IGNORE) \
1021 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1022 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1023 -o -name '.*.rej' -o -size 0 \
1024 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1025 -type f -print | xargs rm -f
1026
1027
1028 # Packaging of the kernel to various formats
1029 # ---------------------------------------------------------------------------
1030 # rpm target kept for backward compatibility
1031 package-dir := $(srctree)/scripts/package
1032
1033 %pkg: include/config/kernel.release FORCE
1034 $(Q)$(MAKE) $(build)=$(package-dir) $@
1035 rpm: include/config/kernel.release FORCE
1036 $(Q)$(MAKE) $(build)=$(package-dir) $@
1037
1038
1039 # Brief documentation of the typical targets used
1040 # ---------------------------------------------------------------------------
1041
1042 boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
1043 boards := $(notdir $(boards))
1044
1045 help:
1046 @echo 'Cleaning targets:'
1047 @echo ' clean - remove most generated files but keep the config'
1048 @echo ' mrproper - remove all generated files + config + various backup files'
1049 @echo ''
1050 @echo 'Configuration targets:'
1051 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1052 @echo ''
1053 @echo 'Other generic targets:'
1054 @echo ' all - Build all targets marked with [*]'
1055 @echo '* vmlinux - Build the bare kernel'
1056 @echo '* modules - Build all modules'
1057 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1058 @echo ' dir/ - Build all files in dir and below'
1059 @echo ' dir/file.[ois] - Build specified target only'
1060 @echo ' dir/file.ko - Build module including final link'
1061 @echo ' rpm - Build a kernel as an RPM package'
1062 @echo ' tags/TAGS - Generate tags file for editors'
1063 @echo ' cscope - Generate cscope index'
1064 @echo ' kernelrelease - Output the release version string'
1065 @echo ' kernelversion - Output the version stored in Makefile'
1066 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'
1067 @echo ' (default: /lib/modules/$$VERSION/abi)'
1068 @echo ''
1069 @echo 'Static analysers'
1070 @echo ' checkstack - Generate a list of stack hogs'
1071 @echo ' namespacecheck - Name space analysis on compiled kernel'
1072 @echo ''
1073 @echo 'Kernel packaging:'
1074 @$(MAKE) $(build)=$(package-dir) help
1075 @echo ''
1076 @echo 'Documentation targets:'
1077 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1078 @echo ''
1079 @echo 'Architecture specific targets ($(ARCH)):'
1080 @$(if $(archhelp),$(archhelp),\
1081 echo ' No architecture specific help defined for $(ARCH)')
1082 @echo ''
1083 @$(if $(boards), \
1084 $(foreach b, $(boards), \
1085 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1086 echo '')
1087
1088 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1089 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1090 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1091 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1092 @echo ''
1093 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1094 @echo 'For further info see the ./README file'
1095
1096
1097 # Documentation targets
1098 # ---------------------------------------------------------------------------
1099 %docs: scripts_basic FORCE
1100 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1101
1102 else # KBUILD_EXTMOD
1103
1104 ###
1105 # External module support.
1106 # When building external modules the kernel used as basis is considered
1107 # read-only, and no consistency checks are made and the make
1108 # system is not used on the basis kernel. If updates are required
1109 # in the basis kernel ordinary make commands (without M=...) must
1110 # be used.
1111 #
1112 # The following are the only valid targets when building external
1113 # modules.
1114 # make M=dir clean Delete all automatically generated files
1115 # make M=dir modules Make all modules in specified dir
1116 # make M=dir Same as 'make M=dir modules'
1117 # make M=dir modules_install
1118 # Install the modules built in the module directory
1119 # Assumes install directory is already created
1120
1121 # We are always building modules
1122 KBUILD_MODULES := 1
1123 PHONY += crmodverdir
1124 crmodverdir:
1125 $(Q)mkdir -p $(MODVERDIR)
1126 $(Q)rm -f $(MODVERDIR)/*
1127
1128 PHONY += $(objtree)/Module.symvers
1129 $(objtree)/Module.symvers:
1130 @test -e $(objtree)/Module.symvers || ( \
1131 echo; \
1132 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1133 echo " is missing; modules will have no dependencies and modversions."; \
1134 echo )
1135
1136 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1137 PHONY += $(module-dirs) modules
1138 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1139 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1140
1141 modules: $(module-dirs)
1142 @echo ' Building modules, stage 2.';
1143 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1144
1145 PHONY += modules_install
1146 modules_install: _emodinst_ _emodinst_post
1147
1148 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1149 PHONY += _emodinst_
1150 _emodinst_:
1151 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1152 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
1153
1154 # Run depmod only is we have System.map and depmod is executable
1155 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1156 cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \
1157 $(DEPMOD) -ae -F System.map \
1158 $(if $(strip $(INSTALL_MOD_PATH)), \
1159 -b $(INSTALL_MOD_PATH) -r) \
1160 $(KERNELRELEASE); \
1161 fi
1162
1163 PHONY += _emodinst_post
1164 _emodinst_post: _emodinst_
1165 $(call cmd,depmod)
1166
1167 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1168
1169 PHONY += $(clean-dirs) clean
1170 $(clean-dirs):
1171 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1172
1173 clean: rm-dirs := $(MODVERDIR)
1174 clean: $(clean-dirs)
1175 $(call cmd,rmdirs)
1176 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
1177 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1178 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
1179 -type f -print | xargs rm -f
1180
1181 help:
1182 @echo ' Building external modules.'
1183 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1184 @echo ''
1185 @echo ' modules - default target, build the module(s)'
1186 @echo ' modules_install - install the module'
1187 @echo ' clean - remove generated files in module directory only'
1188 @echo ''
1189
1190 # Dummies...
1191 PHONY += prepare scripts
1192 prepare: ;
1193 scripts: ;
1194 endif # KBUILD_EXTMOD
1195
1196 # Generate tags for editors
1197 # ---------------------------------------------------------------------------
1198
1199 #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
1200 #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
1201 #Adding $(srctree) adds about 20M on i386 to the size of the output file!
1202
1203 ifeq ($(src),$(obj))
1204 __srctree =
1205 else
1206 __srctree = $(srctree)/
1207 endif
1208
1209 ifeq ($(ALLSOURCE_ARCHS),)
1210 ifeq ($(ARCH),um)
1211 ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
1212 else
1213 ALLINCLUDE_ARCHS := $(ARCH)
1214 endif
1215 else
1216 #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour.
1217 ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
1218 endif
1219
1220 ALLSOURCE_ARCHS := $(ARCH)
1221
1222 define find-sources
1223 ( find $(__srctree) $(RCS_FIND_IGNORE) \
1224 \( -name include -o -name arch \) -prune -o \
1225 -name $1 -print; \
1226 for ARCH in $(ALLSOURCE_ARCHS) ; do \
1227 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
1228 -name $1 -print; \
1229 done ; \
1230 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
1231 -name $1 -print; \
1232 find $(__srctree)include $(RCS_FIND_IGNORE) \
1233 \( -name config -o -name 'asm-*' \) -prune \
1234 -o -name $1 -print; \
1235 for ARCH in $(ALLINCLUDE_ARCHS) ; do \
1236 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
1237 -name $1 -print; \
1238 done ; \
1239 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
1240 -name $1 -print )
1241 endef
1242
1243 define all-sources
1244 $(call find-sources,'*.[chS]')
1245 endef
1246 define all-kconfigs
1247 $(call find-sources,'Kconfig*')
1248 endef
1249 define all-defconfigs
1250 $(call find-sources,'defconfig')
1251 endef
1252
1253 quiet_cmd_cscope-file = FILELST cscope.files
1254 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
1255
1256 quiet_cmd_cscope = MAKE cscope.out
1257 cmd_cscope = cscope -b
1258
1259 cscope: FORCE
1260 $(call cmd,cscope-file)
1261 $(call cmd,cscope)
1262
1263 quiet_cmd_TAGS = MAKE $@
1264 define cmd_TAGS
1265 rm -f $@; \
1266 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
1267 echo "-I __initdata,__exitdata,__acquires,__releases \
1268 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1269 --extra=+f --c-kinds=+px"`; \
1270 $(all-sources) | xargs etags $$ETAGSF -a; \
1271 if test "x$$ETAGSF" = x; then \
1272 $(all-kconfigs) | xargs etags -a \
1273 --regex='/^config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
1274 $(all-defconfigs) | xargs etags -a \
1275 --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
1276 fi
1277 endef
1278
1279 TAGS: FORCE
1280 $(call cmd,TAGS)
1281
1282
1283 quiet_cmd_tags = MAKE $@
1284 define cmd_tags
1285 rm -f $@; \
1286 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
1287 echo "-I __initdata,__exitdata,__acquires,__releases \
1288 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
1289 --extra=+f --c-kinds=+px"`; \
1290 $(all-sources) | xargs ctags $$CTAGSF -a
1291 endef
1292
1293 tags: FORCE
1294 $(call cmd,tags)
1295
1296
1297 # Scripts to check various things for consistency
1298 # ---------------------------------------------------------------------------
1299
1300 includecheck:
1301 find * $(RCS_FIND_IGNORE) \
1302 -name '*.[hcS]' -type f -print | sort \
1303 | xargs $(PERL) -w scripts/checkincludes.pl
1304
1305 versioncheck:
1306 find * $(RCS_FIND_IGNORE) \
1307 -name '*.[hcS]' -type f -print | sort \
1308 | xargs $(PERL) -w scripts/checkversion.pl
1309
1310 namespacecheck:
1311 $(PERL) $(srctree)/scripts/namespace.pl
1312
1313 endif #ifeq ($(config-targets),1)
1314 endif #ifeq ($(mixed-targets),1)
1315
1316 PHONY += checkstack kernelrelease kernelversion
1317 checkstack:
1318 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1319 $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
1320
1321 kernelrelease:
1322 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \
1323 $(error kernelrelease not valid - run 'make prepare' to update it))
1324 kernelversion:
1325 @echo $(KERNELVERSION)
1326
1327 # Single targets
1328 # ---------------------------------------------------------------------------
1329 # Single targets are compatible with:
1330 # - build whith mixed source and output
1331 # - build with separate output dir 'make O=...'
1332 # - external modules
1333 #
1334 # target-dir => where to store outputfile
1335 # build-dir => directory in kernel source tree to use
1336
1337 ifeq ($(KBUILD_EXTMOD),)
1338 build-dir = $(patsubst %/,%,$(dir $@))
1339 target-dir = $(dir $@)
1340 else
1341 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1342 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1343 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1344 endif
1345
1346 %.s: %.c prepare scripts FORCE
1347 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1348 %.i: %.c prepare scripts FORCE
1349 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1350 %.o: %.c prepare scripts FORCE
1351 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1352 %.lst: %.c prepare scripts FORCE
1353 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1354 %.s: %.S prepare scripts FORCE
1355 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1356 %.o: %.S prepare scripts FORCE
1357 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1358 %.symtypes: %.c prepare scripts FORCE
1359 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1360
1361 # Modules
1362 / %/: prepare scripts FORCE
1363 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1364 $(build)=$(build-dir)
1365 %.ko: prepare scripts FORCE
1366 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1367 $(build)=$(build-dir) $(@:.ko=.o)
1368 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
1369
1370 # FIXME Should go into a make.lib or something
1371 # ===========================================================================
1372
1373 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1374 cmd_rmdirs = rm -rf $(rm-dirs)
1375
1376 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1377 cmd_rmfiles = rm -f $(rm-files)
1378
1379
1380 a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
1381 $(NOSTDINC_FLAGS) $(CPPFLAGS) \
1382 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
1383
1384 quiet_cmd_as_o_S = AS $@
1385 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1386
1387 # read all saved command lines
1388
1389 targets := $(wildcard $(sort $(targets)))
1390 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1391
1392 ifneq ($(cmd_files),)
1393 $(cmd_files): ; # Do not try to update included dependency files
1394 include $(cmd_files)
1395 endif
1396
1397 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1398 # Usage:
1399 # $(Q)$(MAKE) $(clean)=dir
1400 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1401
1402 endif # skip-makefile
1403
1404 PHONY += FORCE
1405 FORCE:
1406
1407
1408 # Declare the contents of the .PHONY variable as phony. We keep that
1409 # information in a variable se we can use it in if_changed and friends.
1410 .PHONY: $(PHONY)