Contents of /alx-src/tags/kernel26-2.6.12-alx-r9/Makefile
Parent Directory | Revision Log
Revision 630 -
(show annotations)
(download)
Wed Mar 4 11:03:09 2009 UTC (15 years, 6 months ago) by niro
File size: 44189 byte(s)
Wed Mar 4 11:03:09 2009 UTC (15 years, 6 months ago) by niro
File size: 44189 byte(s)
Tag kernel26-2.6.12-alx-r9
1 | VERSION = 2 |
2 | PATCHLEVEL = 6 |
3 | SUBLEVEL = 12 |
4 | EXTRAVERSION = -alx-r9 |
5 | NAME=Woozy Numbat |
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 = $(V) |
38 | endif |
39 | endif |
40 | ifndef KBUILD_VERBOSE |
41 | KBUILD_VERBOSE = 0 |
42 | endif |
43 | |
44 | # Call sparse as part of compilation of C files |
45 | # Use 'make C=1' to enable sparse checking |
46 | |
47 | ifdef C |
48 | ifeq ("$(origin C)", "command line") |
49 | KBUILD_CHECKSRC = $(C) |
50 | endif |
51 | endif |
52 | ifndef KBUILD_CHECKSRC |
53 | KBUILD_CHECKSRC = 0 |
54 | endif |
55 | |
56 | # Use make M=dir to specify directory of external module to build |
57 | # Old syntax make ... SUBDIRS=$PWD is still supported |
58 | # Setting the environment variable KBUILD_EXTMOD take precedence |
59 | ifdef SUBDIRS |
60 | KBUILD_EXTMOD ?= $(SUBDIRS) |
61 | endif |
62 | ifdef M |
63 | ifeq ("$(origin M)", "command line") |
64 | KBUILD_EXTMOD := $(M) |
65 | endif |
66 | endif |
67 | |
68 | |
69 | # kbuild supports saving output files in a separate directory. |
70 | # To locate output files in a separate directory two syntaxes are supported. |
71 | # In both cases the working directory must be the root of the kernel src. |
72 | # 1) O= |
73 | # Use "make O=dir/to/store/output/files/" |
74 | # |
75 | # 2) Set KBUILD_OUTPUT |
76 | # Set the environment variable KBUILD_OUTPUT to point to the directory |
77 | # where the output files shall be placed. |
78 | # export KBUILD_OUTPUT=dir/to/store/output/files/ |
79 | # make |
80 | # |
81 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment |
82 | # variable. |
83 | |
84 | |
85 | # KBUILD_SRC is set on invocation of make in OBJ directory |
86 | # KBUILD_SRC is not intended to be used by the regular user (for now) |
87 | ifeq ($(KBUILD_SRC),) |
88 | |
89 | # OK, Make called in directory where kernel src resides |
90 | # Do we want to locate output files in a separate directory? |
91 | ifdef O |
92 | ifeq ("$(origin O)", "command line") |
93 | KBUILD_OUTPUT := $(O) |
94 | endif |
95 | endif |
96 | |
97 | # That's our default target when none is given on the command line |
98 | .PHONY: _all |
99 | _all: |
100 | |
101 | ifneq ($(KBUILD_OUTPUT),) |
102 | # Invoke a second make in the output directory, passing relevant variables |
103 | # check that the output directory actually exists |
104 | saved-output := $(KBUILD_OUTPUT) |
105 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) |
106 | $(if $(KBUILD_OUTPUT),, \ |
107 | $(error output directory "$(saved-output)" does not exist)) |
108 | |
109 | .PHONY: $(MAKECMDGOALS) |
110 | |
111 | $(filter-out _all,$(MAKECMDGOALS)) _all: |
112 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
113 | KBUILD_SRC=$(CURDIR) KBUILD_VERBOSE=$(KBUILD_VERBOSE) \ |
114 | KBUILD_CHECK=$(KBUILD_CHECK) KBUILD_EXTMOD="$(KBUILD_EXTMOD)" \ |
115 | -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) |
142 | |
143 | export srctree objtree VPATH TOPDIR |
144 | |
145 | nullstring := |
146 | space := $(nullstring) # end of line |
147 | |
148 | # Take the contents of any files called localversion* and the config |
149 | # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. Be |
150 | # careful not to include files twice if building in the source |
151 | # directory. LOCALVERSION from the command line override all of this |
152 | |
153 | localver := $(objtree)/localversion* $(srctree)/localversion* |
154 | localver := $(sort $(wildcard $(localver))) |
155 | # skip backup files (containing '~') |
156 | localver := $(foreach f, $(localver), $(if $(findstring ~, $(f)),,$(f))) |
157 | |
158 | LOCALVERSION = $(subst $(space),, \ |
159 | $(shell cat /dev/null $(localver)) \ |
160 | $(patsubst "%",%,$(CONFIG_LOCALVERSION))) |
161 | |
162 | KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)$(LOCALVERSION) |
163 | |
164 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
165 | # first, and if a usermode build is happening, the "ARCH=um" on the command |
166 | # line overrides the setting of ARCH below. If a native build is happening, |
167 | # then ARCH is assigned, getting whatever value it gets normally, and |
168 | # SUBARCH is subsequently ignored. |
169 | |
170 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ |
171 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
172 | -e s/s390x/s390/ -e s/parisc64/parisc/ ) |
173 | |
174 | # Cross compiling and selecting different set of gcc/bin-utils |
175 | # --------------------------------------------------------------------------- |
176 | # |
177 | # When performing cross compilation for other architectures ARCH shall be set |
178 | # to the target architecture. (See arch/* for the possibilities). |
179 | # ARCH can be set during invocation of make: |
180 | # make ARCH=ia64 |
181 | # Another way is to have ARCH set in the environment. |
182 | # The default ARCH is the host where make is executed. |
183 | |
184 | # CROSS_COMPILE specify the prefix used for all executables used |
185 | # during compilation. Only gcc and related bin-utils executables |
186 | # are prefixed with $(CROSS_COMPILE). |
187 | # CROSS_COMPILE can be set on the command line |
188 | # make CROSS_COMPILE=ia64-linux- |
189 | # Alternatively CROSS_COMPILE can be set in the environment. |
190 | # Default value for CROSS_COMPILE is not to prefix executables |
191 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
192 | |
193 | ARCH ?= $(SUBARCH) |
194 | CROSS_COMPILE ?= |
195 | |
196 | # Architecture as present in compile.h |
197 | UTS_MACHINE := $(ARCH) |
198 | |
199 | # SHELL used by kbuild |
200 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ |
201 | else if [ -x /bin/bash ]; then echo /bin/bash; \ |
202 | else echo sh; fi ; fi) |
203 | |
204 | HOSTCC = gcc |
205 | HOSTCXX = g++ |
206 | HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer |
207 | HOSTCXXFLAGS = -O2 |
208 | |
209 | # Decide whether to build built-in, modular, or both. |
210 | # Normally, just do built-in. |
211 | |
212 | KBUILD_MODULES := |
213 | KBUILD_BUILTIN := 1 |
214 | |
215 | # If we have only "make modules", don't compile built-in objects. |
216 | # When we're building modules with modversions, we need to consider |
217 | # the built-in objects during the descend as well, in order to |
218 | # make sure the checksums are uptodate before we record them. |
219 | |
220 | ifeq ($(MAKECMDGOALS),modules) |
221 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) |
222 | endif |
223 | |
224 | # If we have "make <whatever> modules", compile modules |
225 | # in addition to whatever we do anyway. |
226 | # Just "make" or "make all" shall build modules as well |
227 | |
228 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) |
229 | KBUILD_MODULES := 1 |
230 | endif |
231 | |
232 | ifeq ($(MAKECMDGOALS),) |
233 | KBUILD_MODULES := 1 |
234 | endif |
235 | |
236 | export KBUILD_MODULES KBUILD_BUILTIN KBUILD_VERBOSE |
237 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
238 | |
239 | # Beautify output |
240 | # --------------------------------------------------------------------------- |
241 | # |
242 | # Normally, we echo the whole command before executing it. By making |
243 | # that echo $($(quiet)$(cmd)), we now have the possibility to set |
244 | # $(quiet) to choose other forms of output instead, e.g. |
245 | # |
246 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ |
247 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< |
248 | # |
249 | # If $(quiet) is empty, the whole command will be printed. |
250 | # If it is set to "quiet_", only the short version will be printed. |
251 | # If it is set to "silent_", nothing wil be printed at all, since |
252 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
253 | # |
254 | # A simple variant is to prefix commands with $(Q) - that's usefull |
255 | # for commands that shall be hidden in non-verbose mode. |
256 | # |
257 | # $(Q)ln $@ :< |
258 | # |
259 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. |
260 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. |
261 | |
262 | ifeq ($(KBUILD_VERBOSE),1) |
263 | quiet = |
264 | Q = |
265 | else |
266 | quiet=quiet_ |
267 | Q = @ |
268 | endif |
269 | |
270 | # If the user is running make -s (silent mode), suppress echoing of |
271 | # commands |
272 | |
273 | ifneq ($(findstring s,$(MAKEFLAGS)),) |
274 | quiet=silent_ |
275 | endif |
276 | |
277 | export quiet Q KBUILD_VERBOSE |
278 | |
279 | ###### |
280 | # cc support functions to be used (only) in arch/$(ARCH)/Makefile |
281 | # See documentation in Documentation/kbuild/makefiles.txt |
282 | |
283 | # cc-option |
284 | # Usage: cflags-y += $(call gcc-option, -march=winchip-c6, -march=i586) |
285 | |
286 | cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ |
287 | > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;) |
288 | |
289 | # For backward compatibility |
290 | check_gcc = $(warning check_gcc is deprecated - use cc-option) \ |
291 | $(call cc-option, $(1),$(2)) |
292 | |
293 | # cc-option-yn |
294 | # Usage: flag := $(call cc-option-yn, -march=winchip-c6) |
295 | cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ |
296 | > /dev/null 2>&1; then echo "y"; else echo "n"; fi;) |
297 | |
298 | # cc-option-align |
299 | # Prefix align with either -falign or -malign |
300 | cc-option-align = $(subst -functions=0,,\ |
301 | $(call cc-option,-falign-functions=0,-malign-functions=0)) |
302 | |
303 | # cc-version |
304 | # Usage gcc-ver := $(call cc-version $(CC)) |
305 | cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \ |
306 | $(if $(1), $(1), $(CC))) |
307 | |
308 | |
309 | # Look for make include files relative to root of kernel src |
310 | MAKEFLAGS += --include-dir=$(srctree) |
311 | |
312 | # For maximum performance (+ possibly random breakage, uncomment |
313 | # the following) |
314 | |
315 | #MAKEFLAGS += -rR |
316 | |
317 | # Make variables (CC, etc...) |
318 | |
319 | AS = $(CROSS_COMPILE)as |
320 | LD = $(CROSS_COMPILE)ld |
321 | CC = $(CROSS_COMPILE)gcc |
322 | CPP = $(CC) -E |
323 | AR = $(CROSS_COMPILE)ar |
324 | NM = $(CROSS_COMPILE)nm |
325 | STRIP = $(CROSS_COMPILE)strip |
326 | OBJCOPY = $(CROSS_COMPILE)objcopy |
327 | OBJDUMP = $(CROSS_COMPILE)objdump |
328 | AWK = awk |
329 | GENKSYMS = scripts/genksyms/genksyms |
330 | DEPMOD = /sbin/depmod |
331 | KALLSYMS = scripts/kallsyms |
332 | PERL = perl |
333 | CHECK = sparse |
334 | |
335 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ |
336 | MODFLAGS = -DMODULE |
337 | CFLAGS_MODULE = $(MODFLAGS) |
338 | AFLAGS_MODULE = $(MODFLAGS) |
339 | LDFLAGS_MODULE = -r |
340 | CFLAGS_KERNEL = |
341 | AFLAGS_KERNEL = |
342 | |
343 | |
344 | # Use LINUXINCLUDE when you must reference the include/ directory. |
345 | # Needed to be compatible with the O= option |
346 | LINUXINCLUDE := -Iinclude \ |
347 | $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) |
348 | |
349 | CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) |
350 | |
351 | CFLAGS := -Wall -Wstrict-prototypes -Wno-trigraphs \ |
352 | -fno-strict-aliasing -fno-common \ |
353 | -ffreestanding |
354 | AFLAGS := -D__ASSEMBLY__ |
355 | |
356 | export VERSION PATCHLEVEL SUBLEVEL EXTRAVERSION LOCALVERSION KERNELRELEASE \ |
357 | ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \ |
358 | CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \ |
359 | HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
360 | |
361 | export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
362 | export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE |
363 | export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
364 | |
365 | # When compiling out-of-tree modules, put MODVERDIR in the module |
366 | # tree rather than in the kernel tree. The kernel tree might |
367 | # even be read-only. |
368 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
369 | |
370 | # The temporary file to save gcc -MD generated dependencies must not |
371 | # contain a comma |
372 | comma := , |
373 | depfile = $(subst $(comma),_,$(@D)/.$(@F).d) |
374 | |
375 | # Files to ignore in find ... statements |
376 | |
377 | RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc \) -prune -o |
378 | RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc |
379 | |
380 | # =========================================================================== |
381 | # Rules shared between *config targets and build targets |
382 | |
383 | # Basic helpers built in scripts/ |
384 | .PHONY: scripts_basic |
385 | scripts_basic: |
386 | $(Q)$(MAKE) $(build)=scripts/basic |
387 | |
388 | .PHONY: outputmakefile |
389 | # outputmakefile generate a Makefile to be placed in output directory, if |
390 | # using a seperate output directory. This allows convinient use |
391 | # of make in output directory |
392 | outputmakefile: |
393 | $(Q)if test ! $(srctree) -ef $(objtree); then \ |
394 | $(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
395 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) \ |
396 | > $(objtree)/Makefile; \ |
397 | echo ' GEN $(objtree)/Makefile'; \ |
398 | fi |
399 | |
400 | # To make sure we do not include .config for any of the *config targets |
401 | # catch them early, and hand them over to scripts/kconfig/Makefile |
402 | # It is allowed to specify more targets when calling make, including |
403 | # mixing *config targets and build targets. |
404 | # For example 'make oldconfig all'. |
405 | # Detect when mixed targets is specified, and make a second invocation |
406 | # of make so .config is not included in this case either (for *config). |
407 | |
408 | no-dot-config-targets := clean mrproper distclean \ |
409 | cscope TAGS tags help %docs check% |
410 | |
411 | config-targets := 0 |
412 | mixed-targets := 0 |
413 | dot-config := 1 |
414 | |
415 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) |
416 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) |
417 | dot-config := 0 |
418 | endif |
419 | endif |
420 | |
421 | ifeq ($(KBUILD_EXTMOD),) |
422 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) |
423 | config-targets := 1 |
424 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) |
425 | mixed-targets := 1 |
426 | endif |
427 | endif |
428 | endif |
429 | |
430 | ifeq ($(mixed-targets),1) |
431 | # =========================================================================== |
432 | # We're called with mixed targets (*config and build targets). |
433 | # Handle them one by one. |
434 | |
435 | %:: FORCE |
436 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ |
437 | |
438 | else |
439 | ifeq ($(config-targets),1) |
440 | # =========================================================================== |
441 | # *config targets only - make sure prerequisites are updated, and descend |
442 | # in scripts/kconfig to make the *config target |
443 | |
444 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. |
445 | # KBUILD_DEFCONFIG may point out an alternative default configuration |
446 | # used for 'make defconfig' |
447 | include $(srctree)/arch/$(ARCH)/Makefile |
448 | export KBUILD_DEFCONFIG |
449 | |
450 | config: scripts_basic outputmakefile FORCE |
451 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
452 | %config: scripts_basic outputmakefile FORCE |
453 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
454 | |
455 | else |
456 | # =========================================================================== |
457 | # Build targets only - this includes vmlinux, arch specific targets, clean |
458 | # targets and others. In general all targets except *config targets. |
459 | |
460 | ifeq ($(KBUILD_EXTMOD),) |
461 | # Additional helpers built in scripts/ |
462 | # Carefully list dependencies so we do not try to build scripts twice |
463 | # in parrallel |
464 | .PHONY: scripts |
465 | scripts: scripts_basic include/config/MARKER |
466 | $(Q)$(MAKE) $(build)=$(@) |
467 | |
468 | scripts_basic: include/linux/autoconf.h |
469 | |
470 | # Objects we will link into vmlinux / subdirs we need to visit |
471 | init-y := init/ |
472 | drivers-y := drivers/ sound/ |
473 | net-y := net/ |
474 | libs-y := lib/ |
475 | core-y := usr/ |
476 | endif # KBUILD_EXTMOD |
477 | |
478 | ifeq ($(dot-config),1) |
479 | # In this section, we need .config |
480 | |
481 | # Read in dependencies to all Kconfig* files, make sure to run |
482 | # oldconfig if changes are detected. |
483 | -include .config.cmd |
484 | |
485 | include .config |
486 | |
487 | # If .config needs to be updated, it will be done via the dependency |
488 | # that autoconf has on .config. |
489 | # To avoid any implicit rule to kick in, define an empty command |
490 | .config: ; |
491 | |
492 | # If .config is newer than include/linux/autoconf.h, someone tinkered |
493 | # with it and forgot to run make oldconfig |
494 | include/linux/autoconf.h: .config |
495 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
496 | else |
497 | # Dummy target needed, because used as prerequisite |
498 | include/linux/autoconf.h: ; |
499 | endif |
500 | |
501 | # The all: target is the default when no target is given on the |
502 | # command line. |
503 | # This allow a user to issue only 'make' to build a kernel including modules |
504 | # Defaults vmlinux but it is usually overriden in the arch makefile |
505 | all: vmlinux |
506 | |
507 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
508 | CFLAGS += -Os |
509 | else |
510 | CFLAGS += -O2 |
511 | endif |
512 | |
513 | #Add align options if CONFIG_CC_* is not equal to 0 |
514 | add-align = $(if $(filter-out 0,$($(1))),$(cc-option-align)$(2)=$($(1))) |
515 | CFLAGS += $(call add-align,CONFIG_CC_ALIGN_FUNCTIONS,-functions) |
516 | CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LABELS,-labels) |
517 | CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops) |
518 | CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps) |
519 | |
520 | ifdef CONFIG_FRAME_POINTER |
521 | CFLAGS += -fno-omit-frame-pointer |
522 | else |
523 | CFLAGS += -fomit-frame-pointer |
524 | endif |
525 | |
526 | ifdef CONFIG_DEBUG_INFO |
527 | CFLAGS += -g |
528 | endif |
529 | |
530 | include $(srctree)/arch/$(ARCH)/Makefile |
531 | |
532 | # arch Makefile may override CC so keep this after arch Makefile is included |
533 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
534 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
535 | |
536 | # warn about C99 declaration after statement |
537 | CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
538 | |
539 | # disable pointer signedness warnings in gcc 4.0 |
540 | CFLAGS += $(call cc-option,-Wno-pointer-sign,) |
541 | |
542 | # Default kernel image to build when no specific target is given. |
543 | # KBUILD_IMAGE may be overruled on the commandline or |
544 | # set in the environment |
545 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over |
546 | # this default value |
547 | export KBUILD_IMAGE ?= vmlinux |
548 | |
549 | # |
550 | # INSTALL_PATH specifies where to place the updated kernel and system map |
551 | # images. Default is /boot, but you can set it to other values |
552 | export INSTALL_PATH ?= /boot |
553 | |
554 | # |
555 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory |
556 | # relocations required by build roots. This is not defined in the |
557 | # makefile but the arguement can be passed to make if needed. |
558 | # |
559 | |
560 | MODLIB := $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
561 | export MODLIB |
562 | |
563 | |
564 | ifeq ($(KBUILD_EXTMOD),) |
565 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ |
566 | |
567 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ |
568 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ |
569 | $(net-y) $(net-m) $(libs-y) $(libs-m))) |
570 | |
571 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ |
572 | $(init-n) $(init-) \ |
573 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ |
574 | $(net-n) $(net-) $(libs-n) $(libs-)))) |
575 | |
576 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) |
577 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) |
578 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) |
579 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) |
580 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
581 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) |
582 | libs-y := $(libs-y1) $(libs-y2) |
583 | |
584 | # Build vmlinux |
585 | # --------------------------------------------------------------------------- |
586 | # vmlinux is build from the objects selected by $(vmlinux-init) and |
587 | # $(vmlinux-main). Most are built-in.o files from top-level directories |
588 | # in the kernel tree, others are specified in arch/$(ARCH)Makefile. |
589 | # Ordering when linking is important, and $(vmlinux-init) must be first. |
590 | # |
591 | # vmlinux |
592 | # ^ |
593 | # | |
594 | # +-< $(vmlinux-init) |
595 | # | +--< init/version.o + more |
596 | # | |
597 | # +--< $(vmlinux-main) |
598 | # | +--< driver/built-in.o mm/built-in.o + more |
599 | # | |
600 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) |
601 | # |
602 | # vmlinux version (uname -v) cannot be updated during normal |
603 | # descending-into-subdirs phase since we do not yet know if we need to |
604 | # update vmlinux. |
605 | # Therefore this step is delayed until just before final link of vmlinux - |
606 | # except in the kallsyms case where it is done just before adding the |
607 | # symbols to the kernel. |
608 | # |
609 | # System.map is generated to document addresses of all kernel symbols |
610 | |
611 | vmlinux-init := $(head-y) $(init-y) |
612 | vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) |
613 | vmlinux-all := $(vmlinux-init) $(vmlinux-main) |
614 | vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds |
615 | |
616 | # Rule to link vmlinux - also used during CONFIG_KALLSYMS |
617 | # May be overridden by arch/$(ARCH)/Makefile |
618 | quiet_cmd_vmlinux__ ?= LD $@ |
619 | cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ |
620 | -T $(vmlinux-lds) $(vmlinux-init) \ |
621 | --start-group $(vmlinux-main) --end-group \ |
622 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^) |
623 | |
624 | # Generate new vmlinux version |
625 | quiet_cmd_vmlinux_version = GEN .version |
626 | cmd_vmlinux_version = set -e; \ |
627 | . $(srctree)/scripts/mkversion > .tmp_version; \ |
628 | mv -f .tmp_version .version; \ |
629 | $(MAKE) $(build)=init |
630 | |
631 | # Generate System.map |
632 | quiet_cmd_sysmap = SYSMAP |
633 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap |
634 | |
635 | # Link of vmlinux |
636 | # If CONFIG_KALLSYMS is set .version is already updated |
637 | # Generate System.map and verify that the content is consistent |
638 | |
639 | define rule_vmlinux__ |
640 | $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) |
641 | |
642 | $(call cmd,vmlinux__) |
643 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd |
644 | |
645 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
646 | echo ' $($(quiet)cmd_sysmap) System.map' &&) \ |
647 | $(cmd_sysmap) $@ System.map; \ |
648 | if [ $$? -ne 0 ]; then \ |
649 | rm -f $@; \ |
650 | /bin/false; \ |
651 | fi; |
652 | $(verify_kallsyms) |
653 | endef |
654 | |
655 | |
656 | ifdef CONFIG_KALLSYMS |
657 | # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) |
658 | # It's a three stage process: |
659 | # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is |
660 | # empty |
661 | # Running kallsyms on that gives us .tmp_kallsyms1.o with |
662 | # the right size - vmlinux version (uname -v) is updated during this step |
663 | # o .tmp_vmlinux2 now has a __kallsyms section of the right size, |
664 | # but due to the added section, some addresses have shifted. |
665 | # From here, we generate a correct .tmp_kallsyms2.o |
666 | # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. |
667 | # o Verify that the System.map from vmlinux matches the map from |
668 | # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. |
669 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using |
670 | # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a |
671 | # temporary bypass to allow the kernel to be built while the |
672 | # maintainers work out what went wrong with kallsyms. |
673 | |
674 | ifdef CONFIG_KALLSYMS_EXTRA_PASS |
675 | last_kallsyms := 3 |
676 | else |
677 | last_kallsyms := 2 |
678 | endif |
679 | |
680 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o |
681 | |
682 | define verify_kallsyms |
683 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
684 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ |
685 | $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map |
686 | $(Q)cmp -s System.map .tmp_System.map || \ |
687 | (echo Inconsistent kallsyms data; \ |
688 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ |
689 | rm .tmp_kallsyms* ; /bin/false ) |
690 | endef |
691 | |
692 | # Update vmlinux version before link |
693 | # Use + in front of this rule to silent warning about make -j1 |
694 | cmd_ksym_ld = $(cmd_vmlinux__) |
695 | define rule_ksym_ld |
696 | +$(call cmd,vmlinux_version) |
697 | $(call cmd,vmlinux__) |
698 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd |
699 | endef |
700 | |
701 | # Generate .S file with all kernel symbols |
702 | quiet_cmd_kallsyms = KSYM $@ |
703 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ |
704 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ |
705 | |
706 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE |
707 | $(call if_changed_dep,as_o_S) |
708 | |
709 | .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) |
710 | $(call cmd,kallsyms) |
711 | |
712 | # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version |
713 | .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE |
714 | $(call if_changed_rule,ksym_ld) |
715 | |
716 | .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE |
717 | $(call if_changed,vmlinux__) |
718 | |
719 | .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE |
720 | $(call if_changed,vmlinux__) |
721 | |
722 | # Needs to visit scripts/ before $(KALLSYMS) can be used. |
723 | $(KALLSYMS): scripts ; |
724 | |
725 | endif # ifdef CONFIG_KALLSYMS |
726 | |
727 | # vmlinux image - including updated kernel symbols |
728 | vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE |
729 | $(call if_changed_rule,vmlinux__) |
730 | |
731 | # The actual objects are generated when descending, |
732 | # make sure no implicit rule kicks in |
733 | $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; |
734 | |
735 | # Handle descending into subdirectories listed in $(vmlinux-dirs) |
736 | # Preset locale variables to speed up the build process. Limit locale |
737 | # tweaks to this spot to avoid wrong language settings when running |
738 | # make menuconfig etc. |
739 | # Error messages still appears in the original language |
740 | |
741 | .PHONY: $(vmlinux-dirs) |
742 | $(vmlinux-dirs): prepare-all scripts |
743 | $(Q)$(MAKE) $(build)=$@ |
744 | |
745 | # Things we need to do before we recursively start building the kernel |
746 | # or the modules are listed in "prepare-all". |
747 | # A multi level approach is used. prepare1 is updated first, then prepare0. |
748 | # prepare-all is the collection point for the prepare targets. |
749 | |
750 | .PHONY: prepare-all prepare prepare0 prepare1 prepare2 |
751 | |
752 | # prepare2 is used to check if we are building in a separate output directory, |
753 | # and if so do: |
754 | # 1) Check that make has not been executed in the kernel src $(srctree) |
755 | # 2) Create the include2 directory, used for the second asm symlink |
756 | |
757 | prepare2: |
758 | ifneq ($(KBUILD_SRC),) |
759 | @echo ' Using $(srctree) as source for kernel' |
760 | $(Q)if [ -h $(srctree)/include/asm -o -f $(srctree)/.config ]; then \ |
761 | echo " $(srctree) is not clean, please run 'make mrproper'";\ |
762 | echo " in the '$(srctree)' directory.";\ |
763 | /bin/false; \ |
764 | fi; |
765 | $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; |
766 | $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm |
767 | endif |
768 | |
769 | # prepare1 creates a makefile if using a separate output directory |
770 | prepare1: prepare2 outputmakefile |
771 | |
772 | prepare0: prepare1 include/linux/version.h include/asm include/config/MARKER |
773 | ifneq ($(KBUILD_MODULES),) |
774 | $(Q)rm -rf $(MODVERDIR) |
775 | $(Q)mkdir -p $(MODVERDIR) |
776 | endif |
777 | |
778 | # All the preparing.. |
779 | prepare-all: prepare0 prepare |
780 | |
781 | # Leave this as default for preprocessing vmlinux.lds.S, which is now |
782 | # done in arch/$(ARCH)/kernel/Makefile |
783 | |
784 | export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) |
785 | |
786 | # Single targets |
787 | # --------------------------------------------------------------------------- |
788 | |
789 | %.s: %.c scripts FORCE |
790 | $(Q)$(MAKE) $(build)=$(@D) $@ |
791 | %.i: %.c scripts FORCE |
792 | $(Q)$(MAKE) $(build)=$(@D) $@ |
793 | %.o: %.c scripts FORCE |
794 | $(Q)$(MAKE) $(build)=$(@D) $@ |
795 | %/: scripts prepare FORCE |
796 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@D) |
797 | %.lst: %.c scripts FORCE |
798 | $(Q)$(MAKE) $(build)=$(@D) $@ |
799 | %.s: %.S scripts FORCE |
800 | $(Q)$(MAKE) $(build)=$(@D) $@ |
801 | %.o: %.S scripts FORCE |
802 | $(Q)$(MAKE) $(build)=$(@D) $@ |
803 | |
804 | # FIXME: The asm symlink changes when $(ARCH) changes. That's |
805 | # hard to detect, but I suppose "make mrproper" is a good idea |
806 | # before switching between archs anyway. |
807 | |
808 | include/asm: |
809 | @echo ' SYMLINK $@ -> include/asm-$(ARCH)' |
810 | $(Q)if [ ! -d include ]; then mkdir -p include; fi; |
811 | @ln -fsn asm-$(ARCH) $@ |
812 | |
813 | # Split autoconf.h into include/linux/config/* |
814 | |
815 | include/config/MARKER: include/linux/autoconf.h |
816 | @echo ' SPLIT include/linux/autoconf.h -> include/config/*' |
817 | @scripts/basic/split-include include/linux/autoconf.h include/config |
818 | @touch $@ |
819 | |
820 | # Generate some files |
821 | # --------------------------------------------------------------------------- |
822 | |
823 | # KERNELRELEASE can change from a few different places, meaning version.h |
824 | # needs to be updated, so this check is forced on all builds |
825 | |
826 | uts_len := 64 |
827 | |
828 | define filechk_version.h |
829 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ |
830 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ |
831 | exit 1; \ |
832 | fi; \ |
833 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \ |
834 | echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \ |
835 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \ |
836 | ) |
837 | endef |
838 | |
839 | include/linux/version.h: $(srctree)/Makefile FORCE |
840 | $(call filechk,version.h) |
841 | |
842 | # --------------------------------------------------------------------------- |
843 | |
844 | .PHONY: depend dep |
845 | depend dep: |
846 | @echo '*** Warning: make $@ is unnecessary now.' |
847 | |
848 | # --------------------------------------------------------------------------- |
849 | # Modules |
850 | |
851 | ifdef CONFIG_MODULES |
852 | |
853 | # By default, build modules as well |
854 | |
855 | all: modules |
856 | |
857 | # Build modules |
858 | |
859 | .PHONY: modules |
860 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) |
861 | @echo ' Building modules, stage 2.'; |
862 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost |
863 | |
864 | |
865 | # Target to prepare building external modules |
866 | .PHONY: modules_prepare |
867 | modules_prepare: prepare-all scripts |
868 | |
869 | # Target to install modules |
870 | .PHONY: modules_install |
871 | modules_install: _modinst_ _modinst_post |
872 | |
873 | .PHONY: _modinst_ |
874 | _modinst_: |
875 | @if [ -z "`$(DEPMOD) -V | grep module-init-tools`" ]; then \ |
876 | echo "Warning: you may need to install module-init-tools"; \ |
877 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ |
878 | sleep 1; \ |
879 | fi |
880 | @rm -rf $(MODLIB)/kernel |
881 | @rm -f $(MODLIB)/source |
882 | @mkdir -p $(MODLIB)/kernel |
883 | @ln -s $(srctree) $(MODLIB)/source |
884 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
885 | rm -f $(MODLIB)/build ; \ |
886 | ln -s $(objtree) $(MODLIB)/build ; \ |
887 | fi |
888 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst |
889 | |
890 | # If System.map exists, run depmod. This deliberately does not have a |
891 | # dependency on System.map since that would run the dependency tree on |
892 | # vmlinux. This depmod is only for convenience to give the initial |
893 | # boot a modules.dep even before / is mounted read-write. However the |
894 | # boot script depmod is the master version. |
895 | ifeq "$(strip $(INSTALL_MOD_PATH))" "" |
896 | depmod_opts := |
897 | else |
898 | depmod_opts := -b $(INSTALL_MOD_PATH) -r |
899 | endif |
900 | .PHONY: _modinst_post |
901 | _modinst_post: _modinst_ |
902 | if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi |
903 | |
904 | else # CONFIG_MODULES |
905 | |
906 | # Modules not configured |
907 | # --------------------------------------------------------------------------- |
908 | |
909 | modules modules_install: FORCE |
910 | @echo |
911 | @echo "The present kernel configuration has modules disabled." |
912 | @echo "Type 'make config' and enable loadable module support." |
913 | @echo "Then build a kernel with module support enabled." |
914 | @echo |
915 | @exit 1 |
916 | |
917 | endif # CONFIG_MODULES |
918 | |
919 | # Generate asm-offsets.h |
920 | # --------------------------------------------------------------------------- |
921 | |
922 | define filechk_gen-asm-offsets |
923 | (set -e; \ |
924 | echo "#ifndef __ASM_OFFSETS_H__"; \ |
925 | echo "#define __ASM_OFFSETS_H__"; \ |
926 | echo "/*"; \ |
927 | echo " * DO NOT MODIFY."; \ |
928 | echo " *"; \ |
929 | echo " * This file was generated by arch/$(ARCH)/Makefile"; \ |
930 | echo " *"; \ |
931 | echo " */"; \ |
932 | echo ""; \ |
933 | sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ |
934 | echo ""; \ |
935 | echo "#endif" ) |
936 | endef |
937 | |
938 | |
939 | ### |
940 | # Cleaning is done on three levels. |
941 | # make clean Delete most generated files |
942 | # Leave enough to build external modules |
943 | # make mrproper Delete the current configuration, and all generated files |
944 | # make distclean Remove editor backup files, patch leftover files and the like |
945 | |
946 | # Directories & files removed with 'make clean' |
947 | CLEAN_DIRS += $(MODVERDIR) |
948 | CLEAN_FILES += vmlinux System.map \ |
949 | .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map |
950 | |
951 | # Directories & files removed with 'make mrproper' |
952 | MRPROPER_DIRS += include/config include2 |
953 | MRPROPER_FILES += .config .config.old include/asm .version \ |
954 | include/linux/autoconf.h include/linux/version.h \ |
955 | Module.symvers tags TAGS cscope* |
956 | |
957 | # clean - Delete most, but leave enough to build external modules |
958 | # |
959 | clean: rm-dirs := $(CLEAN_DIRS) |
960 | clean: rm-files := $(CLEAN_FILES) |
961 | clean-dirs := $(addprefix _clean_,$(vmlinux-alldirs)) |
962 | |
963 | .PHONY: $(clean-dirs) clean archclean |
964 | $(clean-dirs): |
965 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
966 | |
967 | clean: archclean $(clean-dirs) |
968 | $(call cmd,rmdirs) |
969 | $(call cmd,rmfiles) |
970 | @find . $(RCS_FIND_IGNORE) \ |
971 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
972 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ |
973 | -type f -print | xargs rm -f |
974 | |
975 | # mrproper - Delete all generated files, including .config |
976 | # |
977 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) |
978 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
979 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) |
980 | |
981 | .PHONY: $(mrproper-dirs) mrproper archmrproper |
982 | $(mrproper-dirs): |
983 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) |
984 | |
985 | mrproper: clean archmrproper $(mrproper-dirs) |
986 | $(call cmd,rmdirs) |
987 | $(call cmd,rmfiles) |
988 | |
989 | # distclean |
990 | # |
991 | .PHONY: distclean |
992 | |
993 | distclean: mrproper |
994 | @find $(srctree) $(RCS_FIND_IGNORE) \ |
995 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
996 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
997 | -o -name '.*.rej' -o -size 0 \ |
998 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
999 | -type f -print | xargs rm -f |
1000 | |
1001 | |
1002 | # Packaging of the kernel to various formats |
1003 | # --------------------------------------------------------------------------- |
1004 | # rpm target kept for backward compatibility |
1005 | package-dir := $(srctree)/scripts/package |
1006 | |
1007 | .PHONY: %-pkg rpm |
1008 | |
1009 | %pkg: FORCE |
1010 | $(Q)$(MAKE) -f $(package-dir)/Makefile $@ |
1011 | rpm: FORCE |
1012 | $(Q)$(MAKE) -f $(package-dir)/Makefile $@ |
1013 | |
1014 | |
1015 | # Brief documentation of the typical targets used |
1016 | # --------------------------------------------------------------------------- |
1017 | |
1018 | boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) |
1019 | boards := $(notdir $(boards)) |
1020 | |
1021 | help: |
1022 | @echo 'Cleaning targets:' |
1023 | @echo ' clean - remove most generated files but keep the config' |
1024 | @echo ' mrproper - remove all generated files + config + various backup files' |
1025 | @echo '' |
1026 | @echo 'Configuration targets:' |
1027 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help |
1028 | @echo '' |
1029 | @echo 'Other generic targets:' |
1030 | @echo ' all - Build all targets marked with [*]' |
1031 | @echo '* vmlinux - Build the bare kernel' |
1032 | @echo '* modules - Build all modules' |
1033 | @echo ' modules_install - Install all modules' |
1034 | @echo ' dir/ - Build all files in dir and below' |
1035 | @echo ' dir/file.[ois] - Build specified target only' |
1036 | @echo ' rpm - Build a kernel as an RPM package' |
1037 | @echo ' tags/TAGS - Generate tags file for editors' |
1038 | @echo ' cscope - Generate cscope index' |
1039 | @echo '' |
1040 | @echo 'Static analysers' |
1041 | @echo ' buildcheck - List dangling references to vmlinux discarded sections' |
1042 | @echo ' and init sections from non-init sections' |
1043 | @echo ' checkstack - Generate a list of stack hogs' |
1044 | @echo ' namespacecheck - Name space analysis on compiled kernel' |
1045 | @echo '' |
1046 | @echo 'Kernel packaging:' |
1047 | @$(MAKE) -f $(package-dir)/Makefile help |
1048 | @echo '' |
1049 | @echo 'Documentation targets:' |
1050 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp |
1051 | @echo '' |
1052 | @echo 'Architecture specific targets ($(ARCH)):' |
1053 | @$(if $(archhelp),$(archhelp),\ |
1054 | echo ' No architecture specific help defined for $(ARCH)') |
1055 | @echo '' |
1056 | @$(if $(boards), \ |
1057 | $(foreach b, $(boards), \ |
1058 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ |
1059 | echo '') |
1060 | |
1061 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' |
1062 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
1063 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse)' |
1064 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK (sparse)' |
1065 | @echo '' |
1066 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' |
1067 | @echo 'For further info see the ./README file' |
1068 | |
1069 | |
1070 | # Documentation targets |
1071 | # --------------------------------------------------------------------------- |
1072 | %docs: scripts_basic FORCE |
1073 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
1074 | |
1075 | else # KBUILD_EXTMOD |
1076 | |
1077 | ### |
1078 | # External module support. |
1079 | # When building external modules the kernel used as basis is considered |
1080 | # read-only, and no consistency checks are made and the make |
1081 | # system is not used on the basis kernel. If updates are required |
1082 | # in the basis kernel ordinary make commands (without M=...) must |
1083 | # be used. |
1084 | # |
1085 | # The following are the only valid targets when building external |
1086 | # modules. |
1087 | # make M=dir clean Delete all automatically generated files |
1088 | # make M=dir modules Make all modules in specified dir |
1089 | # make M=dir Same as 'make M=dir modules' |
1090 | # make M=dir modules_install |
1091 | # Install the modules build in the module directory |
1092 | # Assumes install directory is already created |
1093 | |
1094 | # We are always building modules |
1095 | KBUILD_MODULES := 1 |
1096 | .PHONY: crmodverdir |
1097 | crmodverdir: |
1098 | $(Q)mkdir -p $(MODVERDIR) |
1099 | |
1100 | .PHONY: $(objtree)/Module.symvers |
1101 | $(objtree)/Module.symvers: |
1102 | @test -e $(objtree)/Module.symvers || ( \ |
1103 | echo; \ |
1104 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ |
1105 | echo " is missing; modules will have no dependencies and modversions."; \ |
1106 | echo ) |
1107 | |
1108 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
1109 | .PHONY: $(module-dirs) modules |
1110 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1111 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) |
1112 | |
1113 | modules: $(module-dirs) |
1114 | @echo ' Building modules, stage 2.'; |
1115 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost |
1116 | |
1117 | .PHONY: modules_install |
1118 | modules_install: |
1119 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst |
1120 | |
1121 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1122 | |
1123 | .PHONY: $(clean-dirs) clean |
1124 | $(clean-dirs): |
1125 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
1126 | |
1127 | clean: rm-dirs := $(MODVERDIR) |
1128 | clean: $(clean-dirs) |
1129 | $(call cmd,rmdirs) |
1130 | @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ |
1131 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
1132 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ |
1133 | -type f -print | xargs rm -f |
1134 | |
1135 | help: |
1136 | @echo ' Building external modules.' |
1137 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' |
1138 | @echo '' |
1139 | @echo ' modules - default target, build the module(s)' |
1140 | @echo ' modules_install - install the module' |
1141 | @echo ' clean - remove generated files in module directory only' |
1142 | @echo '' |
1143 | endif # KBUILD_EXTMOD |
1144 | |
1145 | # Generate tags for editors |
1146 | # --------------------------------------------------------------------------- |
1147 | |
1148 | #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set |
1149 | #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file. |
1150 | #Adding $(srctree) adds about 20M on i386 to the size of the output file! |
1151 | |
1152 | ifeq ($(src),$(obj)) |
1153 | __srctree = |
1154 | else |
1155 | __srctree = $(srctree)/ |
1156 | endif |
1157 | |
1158 | define all-sources |
1159 | ( find $(__srctree) $(RCS_FIND_IGNORE) \ |
1160 | \( -name include -o -name arch \) -prune -o \ |
1161 | -name '*.[chS]' -print; \ |
1162 | find $(__srctree)arch/$(ARCH) $(RCS_FIND_IGNORE) \ |
1163 | -name '*.[chS]' -print; \ |
1164 | find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \ |
1165 | -name '*.[chS]' -print; \ |
1166 | find $(__srctree)include $(RCS_FIND_IGNORE) \ |
1167 | \( -name config -o -name 'asm-*' \) -prune \ |
1168 | -o -name '*.[chS]' -print; \ |
1169 | find $(__srctree)include/asm-$(ARCH) $(RCS_FIND_IGNORE) \ |
1170 | -name '*.[chS]' -print; \ |
1171 | find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ |
1172 | -name '*.[chS]' -print ) |
1173 | endef |
1174 | |
1175 | quiet_cmd_cscope-file = FILELST cscope.files |
1176 | cmd_cscope-file = $(all-sources) > cscope.files |
1177 | |
1178 | quiet_cmd_cscope = MAKE cscope.out |
1179 | cmd_cscope = cscope -k -b -q |
1180 | |
1181 | cscope: FORCE |
1182 | $(call cmd,cscope-file) |
1183 | $(call cmd,cscope) |
1184 | |
1185 | quiet_cmd_TAGS = MAKE $@ |
1186 | cmd_TAGS = $(all-sources) | etags - |
1187 | |
1188 | # Exuberant ctags works better with -I |
1189 | |
1190 | quiet_cmd_tags = MAKE $@ |
1191 | define cmd_tags |
1192 | rm -f $@; \ |
1193 | CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL --extra=+f"`; \ |
1194 | $(all-sources) | xargs ctags $$CTAGSF -a |
1195 | endef |
1196 | |
1197 | TAGS: FORCE |
1198 | $(call cmd,TAGS) |
1199 | |
1200 | tags: FORCE |
1201 | $(call cmd,tags) |
1202 | |
1203 | |
1204 | # Scripts to check various things for consistency |
1205 | # --------------------------------------------------------------------------- |
1206 | |
1207 | configcheck: |
1208 | find * $(RCS_FIND_IGNORE) \ |
1209 | -name '*.[hcS]' -type f -print | sort \ |
1210 | | xargs $(PERL) -w scripts/checkconfig.pl |
1211 | |
1212 | includecheck: |
1213 | find * $(RCS_FIND_IGNORE) \ |
1214 | -name '*.[hcS]' -type f -print | sort \ |
1215 | | xargs $(PERL) -w scripts/checkincludes.pl |
1216 | |
1217 | versioncheck: |
1218 | find * $(RCS_FIND_IGNORE) \ |
1219 | -name '*.[hcS]' -type f -print | sort \ |
1220 | | xargs $(PERL) -w scripts/checkversion.pl |
1221 | |
1222 | buildcheck: |
1223 | $(PERL) $(srctree)/scripts/reference_discarded.pl |
1224 | $(PERL) $(srctree)/scripts/reference_init.pl |
1225 | |
1226 | namespacecheck: |
1227 | $(PERL) $(srctree)/scripts/namespace.pl |
1228 | |
1229 | endif #ifeq ($(config-targets),1) |
1230 | endif #ifeq ($(mixed-targets),1) |
1231 | |
1232 | .PHONY: checkstack |
1233 | checkstack: |
1234 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
1235 | $(PERL) $(src)/scripts/checkstack.pl $(ARCH) |
1236 | |
1237 | kernelrelease: |
1238 | @echo $(KERNELRELEASE) |
1239 | |
1240 | # FIXME Should go into a make.lib or something |
1241 | # =========================================================================== |
1242 | |
1243 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) |
1244 | cmd_rmdirs = rm -rf $(rm-dirs) |
1245 | |
1246 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) |
1247 | cmd_rmfiles = rm -f $(rm-files) |
1248 | |
1249 | |
1250 | a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \ |
1251 | $(NOSTDINC_FLAGS) $(CPPFLAGS) \ |
1252 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o) |
1253 | |
1254 | quiet_cmd_as_o_S = AS $@ |
1255 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< |
1256 | |
1257 | # read all saved command lines |
1258 | |
1259 | targets := $(wildcard $(sort $(targets))) |
1260 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
1261 | |
1262 | ifneq ($(cmd_files),) |
1263 | $(cmd_files): ; # Do not try to update included dependency files |
1264 | include $(cmd_files) |
1265 | endif |
1266 | |
1267 | # Execute command and generate cmd file |
1268 | if_changed = $(if $(strip $? \ |
1269 | $(filter-out $(cmd_$(1)),$(cmd_$@))\ |
1270 | $(filter-out $(cmd_$@),$(cmd_$(1)))),\ |
1271 | @set -e; \ |
1272 | $(if $($(quiet)cmd_$(1)),echo ' $(subst ','\'',$($(quiet)cmd_$(1)))';) \ |
1273 | $(cmd_$(1)); \ |
1274 | echo 'cmd_$@ := $(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).cmd) |
1275 | |
1276 | |
1277 | # execute the command and also postprocess generated .d dependencies |
1278 | # file |
1279 | if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\ |
1280 | $(filter-out $(cmd_$(1)),$(cmd_$@))\ |
1281 | $(filter-out $(cmd_$@),$(cmd_$(1)))),\ |
1282 | $(Q)set -e; \ |
1283 | $(if $($(quiet)cmd_$(1)),echo ' $(subst ','\'',$($(quiet)cmd_$(1)))';) \ |
1284 | $(cmd_$(1)); \ |
1285 | scripts/basic/fixdep $(depfile) $@ '$(subst $$,$$$$,$(subst ','\'',$(cmd_$(1))))' > $(@D)/.$(@F).tmp; \ |
1286 | rm -f $(depfile); \ |
1287 | mv -f $(@D)/.$(@F).tmp $(@D)/.$(@F).cmd) |
1288 | |
1289 | # Usage: $(call if_changed_rule,foo) |
1290 | # will check if $(cmd_foo) changed, or any of the prequisites changed, |
1291 | # and if so will execute $(rule_foo) |
1292 | |
1293 | if_changed_rule = $(if $(strip $? \ |
1294 | $(filter-out $(cmd_$(1)),$(cmd_$(@F)))\ |
1295 | $(filter-out $(cmd_$(@F)),$(cmd_$(1)))),\ |
1296 | $(Q)$(rule_$(1))) |
1297 | |
1298 | # If quiet is set, only print short version of command |
1299 | |
1300 | cmd = @$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))' &&) $(cmd_$(1)) |
1301 | |
1302 | # filechk is used to check if the content of a generated file is updated. |
1303 | # Sample usage: |
1304 | # define filechk_sample |
1305 | # echo $KERNELRELEASE |
1306 | # endef |
1307 | # version.h : Makefile |
1308 | # $(call filechk,sample) |
1309 | # The rule defined shall write to stdout the content of the new file. |
1310 | # The existing file will be compared with the new one. |
1311 | # - If no file exist it is created |
1312 | # - If the content differ the new file is used |
1313 | # - If they are equal no change, and no timestamp update |
1314 | |
1315 | define filechk |
1316 | @set -e; \ |
1317 | echo ' CHK $@'; \ |
1318 | mkdir -p $(dir $@); \ |
1319 | $(filechk_$(1)) < $< > $@.tmp; \ |
1320 | if [ -r $@ ] && cmp -s $@ $@.tmp; then \ |
1321 | rm -f $@.tmp; \ |
1322 | else \ |
1323 | echo ' UPD $@'; \ |
1324 | mv -f $@.tmp $@; \ |
1325 | fi |
1326 | endef |
1327 | |
1328 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=dir |
1329 | # Usage: |
1330 | # $(Q)$(MAKE) $(build)=dir |
1331 | build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj |
1332 | |
1333 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
1334 | # Usage: |
1335 | # $(Q)$(MAKE) $(clean)=dir |
1336 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj |
1337 | |
1338 | # $(call descend,<dir>,<target>) |
1339 | # Recursively call a sub-make in <dir> with target <target> |
1340 | # Usage is deprecated, because make does not see this as an invocation of make. |
1341 | descend =$(Q)$(MAKE) -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj=$(1) $(2) |
1342 | |
1343 | endif # skip-makefile |
1344 | |
1345 | FORCE: |