Root/
Source at commit 3cbbb13ce0d7cc45c6b756860ef1d015d2a27576 created 14 years 2 months ago. By Lars-Peter Clausen, From d3699249d687dc0b4d8d4e0e5ac3f9405d31b1ac Mon Sep 17 00:00:00 2001 Subject: [PATCH] /opt/Projects/openwrt/target/linux/xburst/patches-2.6.31/300-jffs2-summery-vmalloc.patch | |
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1 | VERSION = 2 |
2 | PATCHLEVEL = 6 |
3 | SUBLEVEL = 32 |
4 | EXTRAVERSION = .10 |
5 | NAME = Man-Eating Seals of Antiquity |
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: |
14 | # o use make's built-in rules and variables |
15 | # (this increases performance and avoids hard-to-debug behaviour); |
16 | # o print "Entering directory ..."; |
17 | MAKEFLAGS += -rR --no-print-directory |
18 | |
19 | # We are using a recursive build, so we need to do a little thinking |
20 | # to get the ordering right. |
21 | # |
22 | # Most importantly: sub-Makefiles should only ever modify files in |
23 | # their own directory. If in some directory we have a dependency on |
24 | # a file in another dir (which doesn't happen often, but it's often |
25 | # unavoidable when linking the built-in.o targets which finally |
26 | # turn into vmlinux), we will call a sub make in that other dir, and |
27 | # after that we are sure that everything which is in that other dir |
28 | # is now up to date. |
29 | # |
30 | # The only cases where we need to modify files which have global |
31 | # effects are thus separated out and done before the recursive |
32 | # descending is started. They are now explicitly listed as the |
33 | # prepare rule. |
34 | |
35 | # To put more focus on warnings, be less verbose as default |
36 | # Use 'make V=1' to see the full commands |
37 | |
38 | ifeq ("$(origin V)", "command line") |
39 | KBUILD_VERBOSE = $(V) |
40 | endif |
41 | ifndef KBUILD_VERBOSE |
42 | KBUILD_VERBOSE = 0 |
43 | endif |
44 | |
45 | # Call a source code checker (by default, "sparse") as part of the |
46 | # C compilation. |
47 | # |
48 | # Use 'make C=1' to enable checking of only re-compiled files. |
49 | # Use 'make C=2' to enable checking of *all* source files, regardless |
50 | # of whether they are re-compiled or not. |
51 | # |
52 | # See the file "Documentation/sparse.txt" for more details, including |
53 | # where to get the "sparse" utility. |
54 | |
55 | ifeq ("$(origin C)", "command line") |
56 | KBUILD_CHECKSRC = $(C) |
57 | endif |
58 | ifndef KBUILD_CHECKSRC |
59 | KBUILD_CHECKSRC = 0 |
60 | endif |
61 | |
62 | # Use make M=dir to specify directory of external module to build |
63 | # Old syntax make ... SUBDIRS=$PWD is still supported |
64 | # Setting the environment variable KBUILD_EXTMOD take precedence |
65 | ifdef SUBDIRS |
66 | KBUILD_EXTMOD ?= $(SUBDIRS) |
67 | endif |
68 | |
69 | ifeq ("$(origin M)", "command line") |
70 | KBUILD_EXTMOD := $(M) |
71 | endif |
72 | |
73 | # kbuild supports saving output files in a separate directory. |
74 | # To locate output files in a separate directory two syntaxes are supported. |
75 | # In both cases the working directory must be the root of the kernel src. |
76 | # 1) O= |
77 | # Use "make O=dir/to/store/output/files/" |
78 | # |
79 | # 2) Set KBUILD_OUTPUT |
80 | # Set the environment variable KBUILD_OUTPUT to point to the directory |
81 | # where the output files shall be placed. |
82 | # export KBUILD_OUTPUT=dir/to/store/output/files/ |
83 | # make |
84 | # |
85 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment |
86 | # variable. |
87 | |
88 | |
89 | # KBUILD_SRC is set on invocation of make in OBJ directory |
90 | # KBUILD_SRC is not intended to be used by the regular user (for now) |
91 | ifeq ($(KBUILD_SRC),) |
92 | |
93 | # OK, Make called in directory where kernel src resides |
94 | # Do we want to locate output files in a separate directory? |
95 | ifeq ("$(origin O)", "command line") |
96 | KBUILD_OUTPUT := $(O) |
97 | endif |
98 | |
99 | # That's our default target when none is given on the command line |
100 | PHONY := _all |
101 | _all: |
102 | |
103 | # Cancel implicit rules on top Makefile |
104 | $(CURDIR)/Makefile Makefile: ; |
105 | |
106 | ifneq ($(KBUILD_OUTPUT),) |
107 | # Invoke a second make in the output directory, passing relevant variables |
108 | # check that the output directory actually exists |
109 | saved-output := $(KBUILD_OUTPUT) |
110 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) |
111 | $(if $(KBUILD_OUTPUT),, \ |
112 | $(error output directory "$(saved-output)" does not exist)) |
113 | |
114 | PHONY += $(MAKECMDGOALS) sub-make |
115 | |
116 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
117 | $(Q)@: |
118 | |
119 | sub-make: FORCE |
120 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
121 | KBUILD_SRC=$(CURDIR) \ |
122 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
123 | $(filter-out _all sub-make,$(MAKECMDGOALS)) |
124 | |
125 | # Leave processing to above invocation of make |
126 | skip-makefile := 1 |
127 | endif # ifneq ($(KBUILD_OUTPUT),) |
128 | endif # ifeq ($(KBUILD_SRC),) |
129 | |
130 | # We process the rest of the Makefile if this is the final invocation of make |
131 | ifeq ($(skip-makefile),) |
132 | |
133 | # If building an external module we do not care about the all: rule |
134 | # but instead _all depend on modules |
135 | PHONY += all |
136 | ifeq ($(KBUILD_EXTMOD),) |
137 | _all: all |
138 | else |
139 | _all: modules |
140 | endif |
141 | |
142 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) |
143 | objtree := $(CURDIR) |
144 | src := $(srctree) |
145 | obj := $(objtree) |
146 | |
147 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
148 | |
149 | export srctree objtree VPATH |
150 | |
151 | |
152 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
153 | # first, and if a usermode build is happening, the "ARCH=um" on the command |
154 | # line overrides the setting of ARCH below. If a native build is happening, |
155 | # then ARCH is assigned, getting whatever value it gets normally, and |
156 | # SUBARCH is subsequently ignored. |
157 | |
158 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ |
159 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
160 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
161 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
162 | -e s/sh[234].*/sh/ ) |
163 | |
164 | # Cross compiling and selecting different set of gcc/bin-utils |
165 | # --------------------------------------------------------------------------- |
166 | # |
167 | # When performing cross compilation for other architectures ARCH shall be set |
168 | # to the target architecture. (See arch/* for the possibilities). |
169 | # ARCH can be set during invocation of make: |
170 | # make ARCH=ia64 |
171 | # Another way is to have ARCH set in the environment. |
172 | # The default ARCH is the host where make is executed. |
173 | |
174 | # CROSS_COMPILE specify the prefix used for all executables used |
175 | # during compilation. Only gcc and related bin-utils executables |
176 | # are prefixed with $(CROSS_COMPILE). |
177 | # CROSS_COMPILE can be set on the command line |
178 | # make CROSS_COMPILE=ia64-linux- |
179 | # Alternatively CROSS_COMPILE can be set in the environment. |
180 | # Default value for CROSS_COMPILE is not to prefix executables |
181 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
182 | export KBUILD_BUILDHOST := $(SUBARCH) |
183 | ARCH ?= $(SUBARCH) |
184 | CROSS_COMPILE ?= |
185 | |
186 | # Architecture as present in compile.h |
187 | UTS_MACHINE := $(ARCH) |
188 | SRCARCH := $(ARCH) |
189 | |
190 | # Additional ARCH settings for x86 |
191 | ifeq ($(ARCH),i386) |
192 | SRCARCH := x86 |
193 | endif |
194 | ifeq ($(ARCH),x86_64) |
195 | SRCARCH := x86 |
196 | endif |
197 | |
198 | # Additional ARCH settings for sparc |
199 | ifeq ($(ARCH),sparc64) |
200 | SRCARCH := sparc |
201 | endif |
202 | |
203 | # Additional ARCH settings for sh |
204 | ifeq ($(ARCH),sh64) |
205 | SRCARCH := sh |
206 | endif |
207 | |
208 | # Where to locate arch specific headers |
209 | hdr-arch := $(SRCARCH) |
210 | |
211 | ifeq ($(ARCH),m68knommu) |
212 | hdr-arch := m68k |
213 | endif |
214 | |
215 | KCONFIG_CONFIG ?= .config |
216 | |
217 | # SHELL used by kbuild |
218 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ |
219 | else if [ -x /bin/bash ]; then echo /bin/bash; \ |
220 | else echo sh; fi ; fi) |
221 | |
222 | HOSTCC = gcc |
223 | HOSTCXX = g++ |
224 | HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer |
225 | HOSTCXXFLAGS = -O2 |
226 | |
227 | # Decide whether to build built-in, modular, or both. |
228 | # Normally, just do built-in. |
229 | |
230 | KBUILD_MODULES := |
231 | KBUILD_BUILTIN := 1 |
232 | |
233 | # If we have only "make modules", don't compile built-in objects. |
234 | # When we're building modules with modversions, we need to consider |
235 | # the built-in objects during the descend as well, in order to |
236 | # make sure the checksums are up to date before we record them. |
237 | |
238 | ifeq ($(MAKECMDGOALS),modules) |
239 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) |
240 | endif |
241 | |
242 | # If we have "make <whatever> modules", compile modules |
243 | # in addition to whatever we do anyway. |
244 | # Just "make" or "make all" shall build modules as well |
245 | |
246 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) |
247 | KBUILD_MODULES := 1 |
248 | endif |
249 | |
250 | ifeq ($(MAKECMDGOALS),) |
251 | KBUILD_MODULES := 1 |
252 | endif |
253 | |
254 | export KBUILD_MODULES KBUILD_BUILTIN |
255 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
256 | |
257 | # Beautify output |
258 | # --------------------------------------------------------------------------- |
259 | # |
260 | # Normally, we echo the whole command before executing it. By making |
261 | # that echo $($(quiet)$(cmd)), we now have the possibility to set |
262 | # $(quiet) to choose other forms of output instead, e.g. |
263 | # |
264 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ |
265 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< |
266 | # |
267 | # If $(quiet) is empty, the whole command will be printed. |
268 | # If it is set to "quiet_", only the short version will be printed. |
269 | # If it is set to "silent_", nothing will be printed at all, since |
270 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
271 | # |
272 | # A simple variant is to prefix commands with $(Q) - that's useful |
273 | # for commands that shall be hidden in non-verbose mode. |
274 | # |
275 | # $(Q)ln $@ :< |
276 | # |
277 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. |
278 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. |
279 | |
280 | ifeq ($(KBUILD_VERBOSE),1) |
281 | quiet = |
282 | Q = |
283 | else |
284 | quiet=quiet_ |
285 | Q = @ |
286 | endif |
287 | |
288 | # If the user is running make -s (silent mode), suppress echoing of |
289 | # commands |
290 | |
291 | ifneq ($(findstring s,$(MAKEFLAGS)),) |
292 | quiet=silent_ |
293 | endif |
294 | |
295 | export quiet Q KBUILD_VERBOSE |
296 | |
297 | |
298 | # Look for make include files relative to root of kernel src |
299 | MAKEFLAGS += --include-dir=$(srctree) |
300 | |
301 | # We need some generic definitions (do not try to remake the file). |
302 | $(srctree)/scripts/Kbuild.include: ; |
303 | include $(srctree)/scripts/Kbuild.include |
304 | |
305 | # Make variables (CC, etc...) |
306 | |
307 | AS = $(CROSS_COMPILE)as |
308 | LD = $(CROSS_COMPILE)ld |
309 | CC = $(CROSS_COMPILE)gcc |
310 | CPP = $(CC) -E |
311 | AR = $(CROSS_COMPILE)ar |
312 | NM = $(CROSS_COMPILE)nm |
313 | STRIP = $(CROSS_COMPILE)strip |
314 | OBJCOPY = $(CROSS_COMPILE)objcopy |
315 | OBJDUMP = $(CROSS_COMPILE)objdump |
316 | AWK = awk |
317 | GENKSYMS = scripts/genksyms/genksyms |
318 | INSTALLKERNEL := installkernel |
319 | DEPMOD = /sbin/depmod |
320 | KALLSYMS = scripts/kallsyms |
321 | PERL = perl |
322 | CHECK = sparse |
323 | |
324 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
325 | -Wbitwise -Wno-return-void $(CF) |
326 | MODFLAGS = -DMODULE |
327 | CFLAGS_MODULE = $(MODFLAGS) |
328 | AFLAGS_MODULE = $(MODFLAGS) |
329 | LDFLAGS_MODULE = -T $(srctree)/scripts/module-common.lds |
330 | CFLAGS_KERNEL = |
331 | AFLAGS_KERNEL = |
332 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
333 | |
334 | |
335 | # Use LINUXINCLUDE when you must reference the include/ directory. |
336 | # Needed to be compatible with the O= option |
337 | LINUXINCLUDE := -Iinclude \ |
338 | $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ |
339 | -I$(srctree)/arch/$(hdr-arch)/include \ |
340 | -include include/linux/autoconf.h |
341 | |
342 | KBUILD_CPPFLAGS := -D__KERNEL__ |
343 | |
344 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
345 | -fno-strict-aliasing -fno-common \ |
346 | -Werror-implicit-function-declaration \ |
347 | -Wno-format-security \ |
348 | -fno-delete-null-pointer-checks |
349 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
350 | |
351 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
352 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) |
353 | KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) |
354 | |
355 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
356 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
357 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
358 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE |
359 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
360 | |
361 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
362 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
363 | export KBUILD_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 | # Files to ignore in find ... statements |
371 | |
372 | 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 |
373 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git |
374 | |
375 | # =========================================================================== |
376 | # Rules shared between *config targets and build targets |
377 | |
378 | # Basic helpers built in scripts/ |
379 | PHONY += scripts_basic |
380 | scripts_basic: |
381 | $(Q)$(MAKE) $(build)=scripts/basic |
382 | |
383 | # To avoid any implicit rule to kick in, define an empty command. |
384 | scripts/basic/%: scripts_basic ; |
385 | |
386 | PHONY += outputmakefile |
387 | # outputmakefile generates a Makefile in the output directory, if using a |
388 | # separate output directory. This allows convenient use of make in the |
389 | # output directory. |
390 | outputmakefile: |
391 | ifneq ($(KBUILD_SRC),) |
392 | $(Q)ln -fsn $(srctree) source |
393 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
394 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) |
395 | endif |
396 | |
397 | # To make sure we do not include .config for any of the *config targets |
398 | # catch them early, and hand them over to scripts/kconfig/Makefile |
399 | # It is allowed to specify more targets when calling make, including |
400 | # mixing *config targets and build targets. |
401 | # For example 'make oldconfig all'. |
402 | # Detect when mixed targets is specified, and make a second invocation |
403 | # of make so .config is not included in this case either (for *config). |
404 | |
405 | no-dot-config-targets := clean mrproper distclean \ |
406 | cscope TAGS tags help %docs check% \ |
407 | include/linux/version.h headers_% \ |
408 | kernelrelease kernelversion |
409 | |
410 | config-targets := 0 |
411 | mixed-targets := 0 |
412 | dot-config := 1 |
413 | |
414 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) |
415 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) |
416 | dot-config := 0 |
417 | endif |
418 | endif |
419 | |
420 | ifeq ($(KBUILD_EXTMOD),) |
421 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) |
422 | config-targets := 1 |
423 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) |
424 | mixed-targets := 1 |
425 | endif |
426 | endif |
427 | endif |
428 | |
429 | ifeq ($(mixed-targets),1) |
430 | # =========================================================================== |
431 | # We're called with mixed targets (*config and build targets). |
432 | # Handle them one by one. |
433 | |
434 | %:: FORCE |
435 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ |
436 | |
437 | else |
438 | ifeq ($(config-targets),1) |
439 | # =========================================================================== |
440 | # *config targets only - make sure prerequisites are updated, and descend |
441 | # in scripts/kconfig to make the *config target |
442 | |
443 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. |
444 | # KBUILD_DEFCONFIG may point out an alternative default configuration |
445 | # used for 'make defconfig' |
446 | include $(srctree)/arch/$(SRCARCH)/Makefile |
447 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
448 | |
449 | config: scripts_basic outputmakefile FORCE |
450 | $(Q)mkdir -p include/linux include/config |
451 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
452 | |
453 | %config: scripts_basic outputmakefile FORCE |
454 | $(Q)mkdir -p include/linux include/config |
455 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
456 | |
457 | else |
458 | # =========================================================================== |
459 | # Build targets only - this includes vmlinux, arch specific targets, clean |
460 | # targets and others. In general all targets except *config targets. |
461 | |
462 | ifeq ($(KBUILD_EXTMOD),) |
463 | # Additional helpers built in scripts/ |
464 | # Carefully list dependencies so we do not try to build scripts twice |
465 | # in parallel |
466 | PHONY += scripts |
467 | scripts: scripts_basic include/config/auto.conf |
468 | $(Q)$(MAKE) $(build)=$(@) |
469 | |
470 | # Objects we will link into vmlinux / subdirs we need to visit |
471 | init-y := init/ |
472 | drivers-y := drivers/ sound/ firmware/ |
473 | net-y := net/ |
474 | libs-y := lib/ |
475 | core-y := usr/ |
476 | endif # KBUILD_EXTMOD |
477 | |
478 | ifeq ($(dot-config),1) |
479 | # Read in config |
480 | -include include/config/auto.conf |
481 | |
482 | ifeq ($(KBUILD_EXTMOD),) |
483 | # Read in dependencies to all Kconfig* files, make sure to run |
484 | # oldconfig if changes are detected. |
485 | -include include/config/auto.conf.cmd |
486 | |
487 | # To avoid any implicit rule to kick in, define an empty command |
488 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
489 | |
490 | # If .config is newer than include/config/auto.conf, someone tinkered |
491 | # with it and forgot to run make oldconfig. |
492 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
493 | # we execute the config step to be sure to catch updated Kconfig files |
494 | include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
495 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
496 | else |
497 | # external modules needs include/linux/autoconf.h and include/config/auto.conf |
498 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
499 | PHONY += include/config/auto.conf |
500 | |
501 | include/config/auto.conf: |
502 | $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \ |
503 | echo; \ |
504 | echo " ERROR: Kernel configuration is invalid."; \ |
505 | echo " include/linux/autoconf.h or $@ are missing."; \ |
506 | echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ |
507 | echo; \ |
508 | /bin/false) |
509 | |
510 | endif # KBUILD_EXTMOD |
511 | |
512 | else |
513 | # Dummy target needed, because used as prerequisite |
514 | include/config/auto.conf: ; |
515 | endif # $(dot-config) |
516 | |
517 | # The all: target is the default when no target is given on the |
518 | # command line. |
519 | # This allow a user to issue only 'make' to build a kernel including modules |
520 | # Defaults vmlinux but it is usually overridden in the arch makefile |
521 | all: vmlinux |
522 | |
523 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
524 | KBUILD_CFLAGS += -Os |
525 | else |
526 | KBUILD_CFLAGS += -O2 -fno-reorder-blocks -fno-tree-ch |
527 | endif |
528 | |
529 | include $(srctree)/arch/$(SRCARCH)/Makefile |
530 | |
531 | ifneq ($(CONFIG_FRAME_WARN),0) |
532 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
533 | endif |
534 | |
535 | # Force gcc to behave correct even for buggy distributions |
536 | ifndef CONFIG_CC_STACKPROTECTOR |
537 | KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
538 | endif |
539 | |
540 | ifdef CONFIG_FRAME_POINTER |
541 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
542 | else |
543 | KBUILD_CFLAGS += -fomit-frame-pointer |
544 | endif |
545 | |
546 | ifdef CONFIG_DEBUG_INFO |
547 | KBUILD_CFLAGS += -g |
548 | KBUILD_AFLAGS += -gdwarf-2 |
549 | endif |
550 | |
551 | ifdef CONFIG_FUNCTION_TRACER |
552 | KBUILD_CFLAGS += -pg |
553 | endif |
554 | |
555 | # We trigger additional mismatches with less inlining |
556 | ifdef CONFIG_DEBUG_SECTION_MISMATCH |
557 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) |
558 | endif |
559 | |
560 | # arch Makefile may override CC so keep this after arch Makefile is included |
561 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
562 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
563 | |
564 | # improve gcc optimization |
565 | CFLAGS += $(call cc-option,-funit-at-a-time,) |
566 | |
567 | # warn about C99 declaration after statement |
568 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
569 | |
570 | # disable pointer signed / unsigned warnings in gcc 4.0 |
571 | KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) |
572 | |
573 | # disable invalid "can't wrap" optimizations for signed / pointers |
574 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
575 | |
576 | # revert to pre-gcc-4.4 behaviour of .eh_frame |
577 | KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) |
578 | |
579 | # conserve stack if available |
580 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) |
581 | |
582 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
583 | # But warn user when we do so |
584 | warn-assign = \ |
585 | $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") |
586 | |
587 | ifneq ($(KCPPFLAGS),) |
588 | $(call warn-assign,CPPFLAGS) |
589 | KBUILD_CPPFLAGS += $(KCPPFLAGS) |
590 | endif |
591 | ifneq ($(KAFLAGS),) |
592 | $(call warn-assign,AFLAGS) |
593 | KBUILD_AFLAGS += $(KAFLAGS) |
594 | endif |
595 | ifneq ($(KCFLAGS),) |
596 | $(call warn-assign,CFLAGS) |
597 | KBUILD_CFLAGS += $(KCFLAGS) |
598 | endif |
599 | |
600 | # Use --build-id when available. |
601 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ |
602 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
603 | LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
604 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
605 | |
606 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
607 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
608 | endif |
609 | |
610 | # Default kernel image to build when no specific target is given. |
611 | # KBUILD_IMAGE may be overruled on the command line or |
612 | # set in the environment |
613 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over |
614 | # this default value |
615 | export KBUILD_IMAGE ?= vmlinux |
616 | |
617 | # |
618 | # INSTALL_PATH specifies where to place the updated kernel and system map |
619 | # images. Default is /boot, but you can set it to other values |
620 | export INSTALL_PATH ?= /boot |
621 | |
622 | # |
623 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory |
624 | # relocations required by build roots. This is not defined in the |
625 | # makefile but the argument can be passed to make if needed. |
626 | # |
627 | |
628 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
629 | export MODLIB |
630 | |
631 | # |
632 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
633 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then |
634 | # the default option --strip-debug will be used. Otherwise, |
635 | # INSTALL_MOD_STRIP will used as the options to the strip command. |
636 | |
637 | ifdef INSTALL_MOD_STRIP |
638 | ifeq ($(INSTALL_MOD_STRIP),1) |
639 | mod_strip_cmd = $(STRIP) --strip-debug |
640 | else |
641 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
642 | endif # INSTALL_MOD_STRIP=1 |
643 | else |
644 | mod_strip_cmd = true |
645 | endif # INSTALL_MOD_STRIP |
646 | export mod_strip_cmd |
647 | |
648 | |
649 | ifeq ($(KBUILD_EXTMOD),) |
650 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
651 | |
652 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ |
653 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ |
654 | $(net-y) $(net-m) $(libs-y) $(libs-m))) |
655 | |
656 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ |
657 | $(init-n) $(init-) \ |
658 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ |
659 | $(net-n) $(net-) $(libs-n) $(libs-)))) |
660 | |
661 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) |
662 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) |
663 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) |
664 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) |
665 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
666 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) |
667 | libs-y := $(libs-y1) $(libs-y2) |
668 | |
669 | # Build vmlinux |
670 | # --------------------------------------------------------------------------- |
671 | # vmlinux is built from the objects selected by $(vmlinux-init) and |
672 | # $(vmlinux-main). Most are built-in.o files from top-level directories |
673 | # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. |
674 | # Ordering when linking is important, and $(vmlinux-init) must be first. |
675 | # |
676 | # vmlinux |
677 | # ^ |
678 | # | |
679 | # +-< $(vmlinux-init) |
680 | # | +--< init/version.o + more |
681 | # | |
682 | # +--< $(vmlinux-main) |
683 | # | +--< driver/built-in.o mm/built-in.o + more |
684 | # | |
685 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) |
686 | # |
687 | # vmlinux version (uname -v) cannot be updated during normal |
688 | # descending-into-subdirs phase since we do not yet know if we need to |
689 | # update vmlinux. |
690 | # Therefore this step is delayed until just before final link of vmlinux - |
691 | # except in the kallsyms case where it is done just before adding the |
692 | # symbols to the kernel. |
693 | # |
694 | # System.map is generated to document addresses of all kernel symbols |
695 | |
696 | vmlinux-init := $(head-y) $(init-y) |
697 | vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) |
698 | vmlinux-all := $(vmlinux-init) $(vmlinux-main) |
699 | vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds |
700 | export KBUILD_VMLINUX_OBJS := $(vmlinux-all) |
701 | |
702 | # Rule to link vmlinux - also used during CONFIG_KALLSYMS |
703 | # May be overridden by arch/$(ARCH)/Makefile |
704 | quiet_cmd_vmlinux__ ?= LD $@ |
705 | cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ |
706 | -T $(vmlinux-lds) $(vmlinux-init) \ |
707 | --start-group $(vmlinux-main) --end-group \ |
708 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) |
709 | |
710 | # Generate new vmlinux version |
711 | quiet_cmd_vmlinux_version = GEN .version |
712 | cmd_vmlinux_version = set -e; \ |
713 | if [ ! -r .version ]; then \ |
714 | rm -f .version; \ |
715 | echo 1 >.version; \ |
716 | else \ |
717 | mv .version .old_version; \ |
718 | expr 0$$(cat .old_version) + 1 >.version; \ |
719 | fi; \ |
720 | $(MAKE) $(build)=init |
721 | |
722 | # Generate System.map |
723 | quiet_cmd_sysmap = SYSMAP |
724 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap |
725 | |
726 | # Link of vmlinux |
727 | # If CONFIG_KALLSYMS is set .version is already updated |
728 | # Generate System.map and verify that the content is consistent |
729 | # Use + in front of the vmlinux_version rule to silent warning with make -j2 |
730 | # First command is ':' to allow us to use + in front of the rule |
731 | define rule_vmlinux__ |
732 | : |
733 | $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) |
734 | |
735 | $(call cmd,vmlinux__) |
736 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd |
737 | |
738 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
739 | echo ' $($(quiet)cmd_sysmap) System.map' &&) \ |
740 | $(cmd_sysmap) $@ System.map; \ |
741 | if [ $$? -ne 0 ]; then \ |
742 | rm -f $@; \ |
743 | /bin/false; \ |
744 | fi; |
745 | $(verify_kallsyms) |
746 | endef |
747 | |
748 | |
749 | ifdef CONFIG_KALLSYMS |
750 | # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) |
751 | # It's a three stage process: |
752 | # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is |
753 | # empty |
754 | # Running kallsyms on that gives us .tmp_kallsyms1.o with |
755 | # the right size - vmlinux version (uname -v) is updated during this step |
756 | # o .tmp_vmlinux2 now has a __kallsyms section of the right size, |
757 | # but due to the added section, some addresses have shifted. |
758 | # From here, we generate a correct .tmp_kallsyms2.o |
759 | # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. |
760 | # o Verify that the System.map from vmlinux matches the map from |
761 | # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. |
762 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using |
763 | # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a |
764 | # temporary bypass to allow the kernel to be built while the |
765 | # maintainers work out what went wrong with kallsyms. |
766 | |
767 | ifdef CONFIG_KALLSYMS_EXTRA_PASS |
768 | last_kallsyms := 3 |
769 | else |
770 | last_kallsyms := 2 |
771 | endif |
772 | |
773 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o |
774 | |
775 | define verify_kallsyms |
776 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
777 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ |
778 | $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map |
779 | $(Q)cmp -s System.map .tmp_System.map || \ |
780 | (echo Inconsistent kallsyms data; \ |
781 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ |
782 | rm .tmp_kallsyms* ; /bin/false ) |
783 | endef |
784 | |
785 | # Update vmlinux version before link |
786 | # Use + in front of this rule to silent warning about make -j1 |
787 | # First command is ':' to allow us to use + in front of this rule |
788 | cmd_ksym_ld = $(cmd_vmlinux__) |
789 | define rule_ksym_ld |
790 | : |
791 | +$(call cmd,vmlinux_version) |
792 | $(call cmd,vmlinux__) |
793 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd |
794 | endef |
795 | |
796 | # Generate .S file with all kernel symbols |
797 | quiet_cmd_kallsyms = KSYM $@ |
798 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ |
799 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ |
800 | |
801 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE |
802 | $(call if_changed_dep,as_o_S) |
803 | |
804 | .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) |
805 | $(call cmd,kallsyms) |
806 | |
807 | # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version |
808 | .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE |
809 | $(call if_changed_rule,ksym_ld) |
810 | |
811 | .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE |
812 | $(call if_changed,vmlinux__) |
813 | |
814 | .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE |
815 | $(call if_changed,vmlinux__) |
816 | |
817 | # Needs to visit scripts/ before $(KALLSYMS) can be used. |
818 | $(KALLSYMS): scripts ; |
819 | |
820 | # Generate some data for debugging strange kallsyms problems |
821 | debug_kallsyms: .tmp_map$(last_kallsyms) |
822 | |
823 | .tmp_map%: .tmp_vmlinux% FORCE |
824 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ |
825 | |
826 | .tmp_map3: .tmp_map2 |
827 | |
828 | .tmp_map2: .tmp_map1 |
829 | |
830 | endif # ifdef CONFIG_KALLSYMS |
831 | |
832 | # Do modpost on a prelinked vmlinux. The finally linked vmlinux has |
833 | # relevant sections renamed as per the linker script. |
834 | quiet_cmd_vmlinux-modpost = LD $@ |
835 | cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ |
836 | $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ |
837 | $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) |
838 | define rule_vmlinux-modpost |
839 | : |
840 | +$(call cmd,vmlinux-modpost) |
841 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ |
842 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd |
843 | endef |
844 | |
845 | # vmlinux image - including updated kernel symbols |
846 | vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE |
847 | ifdef CONFIG_HEADERS_CHECK |
848 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
849 | endif |
850 | ifdef CONFIG_SAMPLES |
851 | $(Q)$(MAKE) $(build)=samples |
852 | endif |
853 | ifdef CONFIG_BUILD_DOCSRC |
854 | $(Q)$(MAKE) $(build)=Documentation |
855 | endif |
856 | $(call vmlinux-modpost) |
857 | $(call if_changed_rule,vmlinux__) |
858 | $(Q)rm -f .old_version |
859 | |
860 | # build vmlinux.o first to catch section mismatch errors early |
861 | ifdef CONFIG_KALLSYMS |
862 | .tmp_vmlinux1: vmlinux.o |
863 | endif |
864 | |
865 | modpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) |
866 | vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE |
867 | $(call if_changed_rule,vmlinux-modpost) |
868 | |
869 | # The actual objects are generated when descending, |
870 | # make sure no implicit rule kicks in |
871 | $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; |
872 | |
873 | # Handle descending into subdirectories listed in $(vmlinux-dirs) |
874 | # Preset locale variables to speed up the build process. Limit locale |
875 | # tweaks to this spot to avoid wrong language settings when running |
876 | # make menuconfig etc. |
877 | # Error messages still appears in the original language |
878 | |
879 | PHONY += $(vmlinux-dirs) |
880 | $(vmlinux-dirs): prepare scripts |
881 | $(Q)$(MAKE) $(build)=$@ |
882 | |
883 | # Build the kernel release string |
884 | # |
885 | # The KERNELRELEASE value built here is stored in the file |
886 | # include/config/kernel.release, and is used when executing several |
887 | # make targets, such as "make install" or "make modules_install." |
888 | # |
889 | # The eventual kernel release string consists of the following fields, |
890 | # shown in a hierarchical format to show how smaller parts are concatenated |
891 | # to form the larger and final value, with values coming from places like |
892 | # the Makefile, kernel config options, make command line options and/or |
893 | # SCM tag information. |
894 | # |
895 | # $(KERNELVERSION) |
896 | # $(VERSION) eg, 2 |
897 | # $(PATCHLEVEL) eg, 6 |
898 | # $(SUBLEVEL) eg, 18 |
899 | # $(EXTRAVERSION) eg, -rc6 |
900 | # $(localver-full) |
901 | # $(localver) |
902 | # localversion* (files without backups, containing '~') |
903 | # $(CONFIG_LOCALVERSION) (from kernel config setting) |
904 | # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set) |
905 | # ./scripts/setlocalversion (SCM tag, if one exists) |
906 | # $(LOCALVERSION) (from make command line if provided) |
907 | # |
908 | # Note how the final $(localver-auto) string is included *only* if the |
909 | # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the |
910 | # moment, only git is supported but other SCMs can edit the script |
911 | # scripts/setlocalversion and add the appropriate checks as needed. |
912 | |
913 | pattern = ".*/localversion[^~]*" |
914 | string = $(shell cat /dev/null \ |
915 | `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`) |
916 | |
917 | localver = $(subst $(space),, $(string) \ |
918 | $(patsubst "%",%,$(CONFIG_LOCALVERSION))) |
919 | |
920 | # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called |
921 | # and if the SCM is know a tag from the SCM is appended. |
922 | # The appended tag is determined by the SCM used. |
923 | # |
924 | # .scmversion is used when generating rpm packages so we do not loose |
925 | # the version information from the SCM when we do the build of the kernel |
926 | # from the copied source |
927 | ifdef CONFIG_LOCALVERSION_AUTO |
928 | |
929 | ifeq ($(wildcard .scmversion),) |
930 | _localver-auto = $(shell $(CONFIG_SHELL) \ |
931 | $(srctree)/scripts/setlocalversion $(srctree)) |
932 | else |
933 | _localver-auto = $(shell cat .scmversion 2> /dev/null) |
934 | endif |
935 | |
936 | localver-auto = $(LOCALVERSION)$(_localver-auto) |
937 | endif |
938 | |
939 | localver-full = $(localver)$(localver-auto) |
940 | |
941 | # Store (new) KERNELRELASE string in include/config/kernel.release |
942 | kernelrelease = $(KERNELVERSION)$(localver-full) |
943 | include/config/kernel.release: include/config/auto.conf FORCE |
944 | $(Q)rm -f $@ |
945 | $(Q)echo $(kernelrelease) > $@ |
946 | |
947 | |
948 | # Things we need to do before we recursively start building the kernel |
949 | # or the modules are listed in "prepare". |
950 | # A multi level approach is used. prepareN is processed before prepareN-1. |
951 | # archprepare is used in arch Makefiles and when processed asm symlink, |
952 | # version.h and scripts_basic is processed / created. |
953 | |
954 | # Listed in dependency order |
955 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
956 | |
957 | # prepare3 is used to check if we are building in a separate output directory, |
958 | # and if so do: |
959 | # 1) Check that make has not been executed in the kernel src $(srctree) |
960 | # 2) Create the include2 directory, used for the second asm symlink |
961 | prepare3: include/config/kernel.release |
962 | ifneq ($(KBUILD_SRC),) |
963 | @$(kecho) ' Using $(srctree) as source for kernel' |
964 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
965 | echo " $(srctree) is not clean, please run 'make mrproper'";\ |
966 | echo " in the '$(srctree)' directory.";\ |
967 | /bin/false; \ |
968 | fi; |
969 | $(Q)if [ ! -d include2 ]; then \ |
970 | mkdir -p include2; \ |
971 | ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm; \ |
972 | fi |
973 | endif |
974 | |
975 | # prepare2 creates a makefile if using a separate output directory |
976 | prepare2: prepare3 outputmakefile |
977 | |
978 | prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \ |
979 | include/asm include/config/auto.conf |
980 | $(cmd_crmodverdir) |
981 | |
982 | archprepare: prepare1 scripts_basic |
983 | |
984 | prepare0: archprepare FORCE |
985 | $(Q)$(MAKE) $(build)=. |
986 | $(Q)$(MAKE) $(build)=. missing-syscalls |
987 | |
988 | # All the preparing.. |
989 | prepare: prepare0 |
990 | |
991 | # The asm symlink changes when $(ARCH) changes. |
992 | # Detect this and ask user to run make mrproper |
993 | # If asm is a stale symlink (point to dir that does not exist) remove it |
994 | define check-symlink |
995 | set -e; \ |
996 | if [ -L include/asm ]; then \ |
997 | asmlink=`readlink include/asm | cut -d '-' -f 2`; \ |
998 | if [ "$$asmlink" != "$(SRCARCH)" ]; then \ |
999 | echo "ERROR: the symlink $@ points to asm-$$asmlink but asm-$(SRCARCH) was expected"; \ |
1000 | echo " set ARCH or save .config and run 'make mrproper' to fix it"; \ |
1001 | exit 1; \ |
1002 | fi; \ |
1003 | test -e $$asmlink || rm include/asm; \ |
1004 | elif [ -d include/asm ]; then \ |
1005 | echo "ERROR: $@ is a directory but a symlink was expected";\ |
1006 | exit 1; \ |
1007 | fi |
1008 | endef |
1009 | |
1010 | # We create the target directory of the symlink if it does |
1011 | # not exist so the test in check-symlink works and we have a |
1012 | # directory for generated filesas used by some architectures. |
1013 | define create-symlink |
1014 | if [ ! -L include/asm ]; then \ |
1015 | $(kecho) ' SYMLINK $@ -> include/asm-$(SRCARCH)'; \ |
1016 | if [ ! -d include/asm-$(SRCARCH) ]; then \ |
1017 | mkdir -p include/asm-$(SRCARCH); \ |
1018 | fi; \ |
1019 | ln -fsn asm-$(SRCARCH) $@; \ |
1020 | fi |
1021 | endef |
1022 | |
1023 | include/asm: FORCE |
1024 | $(Q)$(check-symlink) |
1025 | $(Q)$(create-symlink) |
1026 | |
1027 | # Generate some files |
1028 | # --------------------------------------------------------------------------- |
1029 | |
1030 | # KERNELRELEASE can change from a few different places, meaning version.h |
1031 | # needs to be updated, so this check is forced on all builds |
1032 | |
1033 | uts_len := 64 |
1034 | define filechk_utsrelease.h |
1035 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ |
1036 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ |
1037 | exit 1; \ |
1038 | fi; \ |
1039 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) |
1040 | endef |
1041 | |
1042 | define filechk_version.h |
1043 | (echo \#define LINUX_VERSION_CODE $(shell \ |
1044 | expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ |
1045 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
1046 | endef |
1047 | |
1048 | include/linux/version.h: $(srctree)/Makefile FORCE |
1049 | $(call filechk,version.h) |
1050 | |
1051 | include/linux/utsrelease.h: include/config/kernel.release FORCE |
1052 | $(call filechk,utsrelease.h) |
1053 | |
1054 | PHONY += headerdep |
1055 | headerdep: |
1056 | $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl |
1057 | |
1058 | # --------------------------------------------------------------------------- |
1059 | |
1060 | PHONY += depend dep |
1061 | depend dep: |
1062 | @echo '*** Warning: make $@ is unnecessary now.' |
1063 | |
1064 | # --------------------------------------------------------------------------- |
1065 | # Firmware install |
1066 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware |
1067 | export INSTALL_FW_PATH |
1068 | |
1069 | PHONY += firmware_install |
1070 | firmware_install: FORCE |
1071 | @mkdir -p $(objtree)/firmware |
1072 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install |
1073 | |
1074 | # --------------------------------------------------------------------------- |
1075 | # Kernel headers |
1076 | |
1077 | #Default location for installed headers |
1078 | export INSTALL_HDR_PATH = $(objtree)/usr |
1079 | |
1080 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
1081 | # Find out where the Kbuild file is located to support |
1082 | # arch/$(ARCH)/include/asm |
1083 | hdr-dir = $(strip \ |
1084 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild), \ |
1085 | arch/$(hdr-arch)/include/asm, include/asm-$(hdr-arch))) |
1086 | |
1087 | # If we do an all arch process set dst to asm-$(hdr-arch) |
1088 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) |
1089 | |
1090 | PHONY += __headers |
1091 | __headers: include/linux/version.h scripts_basic FORCE |
1092 | $(Q)$(MAKE) $(build)=scripts scripts/unifdef |
1093 | |
1094 | PHONY += headers_install_all |
1095 | headers_install_all: |
1096 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install |
1097 | |
1098 | PHONY += headers_install |
1099 | headers_install: __headers |
1100 | $(if $(wildcard $(srctree)/$(hdr-dir)/Kbuild),, \ |
1101 | $(error Headers not exportable for the $(SRCARCH) architecture)) |
1102 | $(Q)$(MAKE) $(hdr-inst)=include |
1103 | $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) |
1104 | |
1105 | PHONY += headers_check_all |
1106 | headers_check_all: headers_install_all |
1107 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
1108 | |
1109 | PHONY += headers_check |
1110 | headers_check: headers_install |
1111 | $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 |
1112 | $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) HDRCHECK=1 |
1113 | |
1114 | # --------------------------------------------------------------------------- |
1115 | # Modules |
1116 | |
1117 | ifdef CONFIG_MODULES |
1118 | |
1119 | # By default, build modules as well |
1120 | |
1121 | all: modules |
1122 | |
1123 | # Build modules |
1124 | # |
1125 | # A module can be listed more than once in obj-m resulting in |
1126 | # duplicate lines in modules.order files. Those are removed |
1127 | # using awk while concatenating to the final file. |
1128 | |
1129 | PHONY += modules |
1130 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) |
1131 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
1132 | @$(kecho) ' Building modules, stage 2.'; |
1133 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1134 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
1135 | |
1136 | |
1137 | # Target to prepare building external modules |
1138 | PHONY += modules_prepare |
1139 | modules_prepare: prepare scripts |
1140 | |
1141 | # Target to install modules |
1142 | PHONY += modules_install |
1143 | modules_install: _modinst_ _modinst_post |
1144 | |
1145 | PHONY += _modinst_ |
1146 | _modinst_: |
1147 | @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ |
1148 | echo "Warning: you may need to install module-init-tools"; \ |
1149 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ |
1150 | sleep 1; \ |
1151 | fi |
1152 | @rm -rf $(MODLIB)/kernel |
1153 | @rm -f $(MODLIB)/source |
1154 | @mkdir -p $(MODLIB)/kernel |
1155 | @ln -s $(srctree) $(MODLIB)/source |
1156 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
1157 | rm -f $(MODLIB)/build ; \ |
1158 | ln -s $(objtree) $(MODLIB)/build ; \ |
1159 | fi |
1160 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
1161 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1162 | |
1163 | # This depmod is only for convenience to give the initial |
1164 | # boot a modules.dep even before / is mounted read-write. However the |
1165 | # boot script depmod is the master version. |
1166 | PHONY += _modinst_post |
1167 | _modinst_post: _modinst_ |
1168 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
1169 | $(call cmd,depmod) |
1170 | |
1171 | else # CONFIG_MODULES |
1172 | |
1173 | # Modules not configured |
1174 | # --------------------------------------------------------------------------- |
1175 | |
1176 | modules modules_install: FORCE |
1177 | @echo |
1178 | @echo "The present kernel configuration has modules disabled." |
1179 | @echo "Type 'make config' and enable loadable module support." |
1180 | @echo "Then build a kernel with module support enabled." |
1181 | @echo |
1182 | @exit 1 |
1183 | |
1184 | endif # CONFIG_MODULES |
1185 | |
1186 | ### |
1187 | # Cleaning is done on three levels. |
1188 | # make clean Delete most generated files |
1189 | # Leave enough to build external modules |
1190 | # make mrproper Delete the current configuration, and all generated files |
1191 | # make distclean Remove editor backup files, patch leftover files and the like |
1192 | |
1193 | # Directories & files removed with 'make clean' |
1194 | CLEAN_DIRS += $(MODVERDIR) |
1195 | CLEAN_FILES += vmlinux System.map \ |
1196 | .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map |
1197 | |
1198 | # Directories & files removed with 'make mrproper' |
1199 | MRPROPER_DIRS += include/config include2 usr/include include/generated |
1200 | MRPROPER_FILES += .config .config.old include/asm .version .old_version \ |
1201 | include/linux/autoconf.h include/linux/version.h \ |
1202 | include/linux/utsrelease.h \ |
1203 | include/linux/bounds.h include/asm*/asm-offsets.h \ |
1204 | Module.symvers Module.markers tags TAGS cscope* |
1205 | |
1206 | # clean - Delete most, but leave enough to build external modules |
1207 | # |
1208 | clean: rm-dirs := $(CLEAN_DIRS) |
1209 | clean: rm-files := $(CLEAN_FILES) |
1210 | clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs) Documentation) |
1211 | |
1212 | PHONY += $(clean-dirs) clean archclean |
1213 | $(clean-dirs): |
1214 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
1215 | |
1216 | clean: archclean $(clean-dirs) |
1217 | $(call cmd,rmdirs) |
1218 | $(call cmd,rmfiles) |
1219 | @find . $(RCS_FIND_IGNORE) \ |
1220 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
1221 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
1222 | -o -name '*.symtypes' -o -name 'modules.order' \ |
1223 | -o -name 'Module.markers' -o -name '.tmp_*.o.*' \ |
1224 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
1225 | |
1226 | # mrproper - Delete all generated files, including .config |
1227 | # |
1228 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) |
1229 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
1230 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) |
1231 | |
1232 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1233 | $(mrproper-dirs): |
1234 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) |
1235 | |
1236 | mrproper: clean archmrproper $(mrproper-dirs) |
1237 | $(call cmd,rmdirs) |
1238 | $(call cmd,rmfiles) |
1239 | |
1240 | # distclean |
1241 | # |
1242 | PHONY += distclean |
1243 | |
1244 | distclean: mrproper |
1245 | @find $(srctree) $(RCS_FIND_IGNORE) \ |
1246 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1247 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
1248 | -o -name '.*.rej' -o -size 0 \ |
1249 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
1250 | -type f -print | xargs rm -f |
1251 | |
1252 | |
1253 | # Packaging of the kernel to various formats |
1254 | # --------------------------------------------------------------------------- |
1255 | # rpm target kept for backward compatibility |
1256 | package-dir := $(srctree)/scripts/package |
1257 | |
1258 | %pkg: include/config/kernel.release FORCE |
1259 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1260 | rpm: include/config/kernel.release FORCE |
1261 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1262 | |
1263 | |
1264 | # Brief documentation of the typical targets used |
1265 | # --------------------------------------------------------------------------- |
1266 | |
1267 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
1268 | boards := $(notdir $(boards)) |
1269 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
1270 | board-dirs := $(sort $(notdir $(board-dirs:/=))) |
1271 | |
1272 | help: |
1273 | @echo 'Cleaning targets:' |
1274 | @echo ' clean - Remove most generated files but keep the config and' |
1275 | @echo ' enough build support to build external modules' |
1276 | @echo ' mrproper - Remove all generated files + config + various backup files' |
1277 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1278 | @echo '' |
1279 | @echo 'Configuration targets:' |
1280 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help |
1281 | @echo '' |
1282 | @echo 'Other generic targets:' |
1283 | @echo ' all - Build all targets marked with [*]' |
1284 | @echo '* vmlinux - Build the bare kernel' |
1285 | @echo '* modules - Build all modules' |
1286 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
1287 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
1288 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' |
1289 | @echo ' dir/ - Build all files in dir and below' |
1290 | @echo ' dir/file.[ois] - Build specified target only' |
1291 | @echo ' dir/file.ko - Build module including final link' |
1292 | @echo ' modules_prepare - Set up for building external modules' |
1293 | @echo ' tags/TAGS - Generate tags file for editors' |
1294 | @echo ' cscope - Generate cscope index' |
1295 | @echo ' kernelrelease - Output the release version string' |
1296 | @echo ' kernelversion - Output the version stored in Makefile' |
1297 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
1298 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
1299 | echo '' |
1300 | @echo 'Static analysers' |
1301 | @echo ' checkstack - Generate a list of stack hogs' |
1302 | @echo ' namespacecheck - Name space analysis on compiled kernel' |
1303 | @echo ' versioncheck - Sanity check on version.h usage' |
1304 | @echo ' includecheck - Check for duplicate included header files' |
1305 | @echo ' export_report - List the usages of all exported symbols' |
1306 | @echo ' headers_check - Sanity check on exported headers' |
1307 | @echo ' headerdep - Detect inclusion cycles in headers'; \ |
1308 | echo '' |
1309 | @echo 'Kernel packaging:' |
1310 | @$(MAKE) $(build)=$(package-dir) help |
1311 | @echo '' |
1312 | @echo 'Documentation targets:' |
1313 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp |
1314 | @echo '' |
1315 | @echo 'Architecture specific targets ($(SRCARCH)):' |
1316 | @$(if $(archhelp),$(archhelp),\ |
1317 | echo ' No architecture specific help defined for $(SRCARCH)') |
1318 | @echo '' |
1319 | @$(if $(boards), \ |
1320 | $(foreach b, $(boards), \ |
1321 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ |
1322 | echo '') |
1323 | @$(if $(board-dirs), \ |
1324 | $(foreach b, $(board-dirs), \ |
1325 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ |
1326 | printf " %-16s - Show all of the above\\n" help-boards; \ |
1327 | echo '') |
1328 | |
1329 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' |
1330 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1331 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
1332 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
1333 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
1334 | @echo '' |
1335 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' |
1336 | @echo 'For further info see the ./README file' |
1337 | |
1338 | |
1339 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
1340 | |
1341 | help-boards: $(help-board-dirs) |
1342 | |
1343 | boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) |
1344 | |
1345 | $(help-board-dirs): help-%: |
1346 | @echo 'Architecture specific targets ($(SRCARCH) $*):' |
1347 | @$(if $(boards-per-dir), \ |
1348 | $(foreach b, $(boards-per-dir), \ |
1349 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ |
1350 | echo '') |
1351 | |
1352 | |
1353 | # Documentation targets |
1354 | # --------------------------------------------------------------------------- |
1355 | %docs: scripts_basic FORCE |
1356 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
1357 | |
1358 | else # KBUILD_EXTMOD |
1359 | |
1360 | ### |
1361 | # External module support. |
1362 | # When building external modules the kernel used as basis is considered |
1363 | # read-only, and no consistency checks are made and the make |
1364 | # system is not used on the basis kernel. If updates are required |
1365 | # in the basis kernel ordinary make commands (without M=...) must |
1366 | # be used. |
1367 | # |
1368 | # The following are the only valid targets when building external |
1369 | # modules. |
1370 | # make M=dir clean Delete all automatically generated files |
1371 | # make M=dir modules Make all modules in specified dir |
1372 | # make M=dir Same as 'make M=dir modules' |
1373 | # make M=dir modules_install |
1374 | # Install the modules built in the module directory |
1375 | # Assumes install directory is already created |
1376 | |
1377 | # We are always building modules |
1378 | KBUILD_MODULES := 1 |
1379 | PHONY += crmodverdir |
1380 | crmodverdir: |
1381 | $(cmd_crmodverdir) |
1382 | |
1383 | PHONY += $(objtree)/Module.symvers |
1384 | $(objtree)/Module.symvers: |
1385 | @test -e $(objtree)/Module.symvers || ( \ |
1386 | echo; \ |
1387 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ |
1388 | echo " is missing; modules will have no dependencies and modversions."; \ |
1389 | echo ) |
1390 | |
1391 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
1392 | PHONY += $(module-dirs) modules |
1393 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1394 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) |
1395 | |
1396 | modules: $(module-dirs) |
1397 | @$(kecho) ' Building modules, stage 2.'; |
1398 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1399 | |
1400 | PHONY += modules_install |
1401 | modules_install: _emodinst_ _emodinst_post |
1402 | |
1403 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1404 | PHONY += _emodinst_ |
1405 | _emodinst_: |
1406 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
1407 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1408 | |
1409 | PHONY += _emodinst_post |
1410 | _emodinst_post: _emodinst_ |
1411 | $(call cmd,depmod) |
1412 | |
1413 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1414 | |
1415 | PHONY += $(clean-dirs) clean |
1416 | $(clean-dirs): |
1417 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
1418 | |
1419 | clean: rm-dirs := $(MODVERDIR) |
1420 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers \ |
1421 | $(KBUILD_EXTMOD)/Module.markers \ |
1422 | $(KBUILD_EXTMOD)/modules.order |
1423 | clean: $(clean-dirs) |
1424 | $(call cmd,rmdirs) |
1425 | $(call cmd,rmfiles) |
1426 | @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ |
1427 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
1428 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
1429 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
1430 | |
1431 | help: |
1432 | @echo ' Building external modules.' |
1433 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' |
1434 | @echo '' |
1435 | @echo ' modules - default target, build the module(s)' |
1436 | @echo ' modules_install - install the module' |
1437 | @echo ' clean - remove generated files in module directory only' |
1438 | @echo '' |
1439 | |
1440 | # Dummies... |
1441 | PHONY += prepare scripts |
1442 | prepare: ; |
1443 | scripts: ; |
1444 | endif # KBUILD_EXTMOD |
1445 | |
1446 | # Generate tags for editors |
1447 | # --------------------------------------------------------------------------- |
1448 | quiet_cmd_tags = GEN $@ |
1449 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ |
1450 | |
1451 | tags TAGS cscope: FORCE |
1452 | $(call cmd,tags) |
1453 | |
1454 | # Scripts to check various things for consistency |
1455 | # --------------------------------------------------------------------------- |
1456 | |
1457 | includecheck: |
1458 | find * $(RCS_FIND_IGNORE) \ |
1459 | -name '*.[hcS]' -type f -print | sort \ |
1460 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1461 | |
1462 | versioncheck: |
1463 | find * $(RCS_FIND_IGNORE) \ |
1464 | -name '*.[hcS]' -type f -print | sort \ |
1465 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1466 | |
1467 | namespacecheck: |
1468 | $(PERL) $(srctree)/scripts/namespace.pl |
1469 | |
1470 | export_report: |
1471 | $(PERL) $(srctree)/scripts/export_report.pl |
1472 | |
1473 | endif #ifeq ($(config-targets),1) |
1474 | endif #ifeq ($(mixed-targets),1) |
1475 | |
1476 | PHONY += checkstack kernelrelease kernelversion |
1477 | |
1478 | # UML needs a little special treatment here. It wants to use the host |
1479 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone |
1480 | # else wants $(ARCH), including people doing cross-builds, which means |
1481 | # that $(SUBARCH) doesn't work here. |
1482 | ifeq ($(ARCH), um) |
1483 | CHECKSTACK_ARCH := $(SUBARCH) |
1484 | else |
1485 | CHECKSTACK_ARCH := $(ARCH) |
1486 | endif |
1487 | checkstack: |
1488 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
1489 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1490 | |
1491 | kernelrelease: |
1492 | $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ |
1493 | $(error kernelrelease not valid - run 'make prepare' to update it)) |
1494 | kernelversion: |
1495 | @echo $(KERNELVERSION) |
1496 | |
1497 | # Single targets |
1498 | # --------------------------------------------------------------------------- |
1499 | # Single targets are compatible with: |
1500 | # - build with mixed source and output |
1501 | # - build with separate output dir 'make O=...' |
1502 | # - external modules |
1503 | # |
1504 | # target-dir => where to store outputfile |
1505 | # build-dir => directory in kernel source tree to use |
1506 | |
1507 | ifeq ($(KBUILD_EXTMOD),) |
1508 | build-dir = $(patsubst %/,%,$(dir $@)) |
1509 | target-dir = $(dir $@) |
1510 | else |
1511 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) |
1512 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) |
1513 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) |
1514 | endif |
1515 | |
1516 | %.s: %.c prepare scripts FORCE |
1517 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1518 | %.i: %.c prepare scripts FORCE |
1519 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1520 | %.o: %.c prepare scripts FORCE |
1521 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1522 | %.lst: %.c prepare scripts FORCE |
1523 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1524 | %.s: %.S prepare scripts FORCE |
1525 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1526 | %.o: %.S prepare scripts FORCE |
1527 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1528 | %.symtypes: %.c prepare scripts FORCE |
1529 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1530 | |
1531 | # Modules |
1532 | /: prepare scripts FORCE |
1533 | $(cmd_crmodverdir) |
1534 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
1535 | $(build)=$(build-dir) |
1536 | %/: prepare scripts FORCE |
1537 | $(cmd_crmodverdir) |
1538 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
1539 | $(build)=$(build-dir) |
1540 | %.ko: prepare scripts FORCE |
1541 | $(cmd_crmodverdir) |
1542 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
1543 | $(build)=$(build-dir) $(@:.ko=.o) |
1544 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1545 | |
1546 | # FIXME Should go into a make.lib or something |
1547 | # =========================================================================== |
1548 | |
1549 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) |
1550 | cmd_rmdirs = rm -rf $(rm-dirs) |
1551 | |
1552 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) |
1553 | cmd_rmfiles = rm -f $(rm-files) |
1554 | |
1555 | # Run depmod only if we have System.map and depmod is executable |
1556 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
1557 | cmd_depmod = \ |
1558 | if [ -r System.map -a -x $(DEPMOD) ]; then \ |
1559 | $(DEPMOD) -ae -F System.map \ |
1560 | $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) ) \ |
1561 | $(KERNELRELEASE); \ |
1562 | fi |
1563 | |
1564 | # Create temporary dir for module support files |
1565 | # clean it up only when building all modules |
1566 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ |
1567 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) |
1568 | |
1569 | a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ |
1570 | $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \ |
1571 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) |
1572 | |
1573 | quiet_cmd_as_o_S = AS $@ |
1574 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< |
1575 | |
1576 | # read all saved command lines |
1577 | |
1578 | targets := $(wildcard $(sort $(targets))) |
1579 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
1580 | |
1581 | ifneq ($(cmd_files),) |
1582 | $(cmd_files): ; # Do not try to update included dependency files |
1583 | include $(cmd_files) |
1584 | endif |
1585 | |
1586 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
1587 | # Usage: |
1588 | # $(Q)$(MAKE) $(clean)=dir |
1589 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj |
1590 | |
1591 | endif # skip-makefile |
1592 | |
1593 | PHONY += FORCE |
1594 | FORCE: |
1595 | |
1596 | # Declare the contents of the .PHONY variable as phony. We keep that |
1597 | # information in a variable so we can use it in if_changed and friends. |
1598 | .PHONY: $(PHONY) |
1599 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9