Root/
1 | VERSION = 3 |
2 | PATCHLEVEL = 18 |
3 | SUBLEVEL = 0 |
4 | EXTRAVERSION = |
5 | NAME = Diseased Newt |
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 use make's built-in rules and variables |
14 | # (this increases performance and avoids hard-to-debug behaviour); |
15 | MAKEFLAGS += -rR |
16 | |
17 | # Avoid funny character set dependencies |
18 | unexport LC_ALL |
19 | LC_COLLATE=C |
20 | LC_NUMERIC=C |
21 | export LC_COLLATE LC_NUMERIC |
22 | |
23 | # Avoid interference with shell env settings |
24 | unexport GREP_OPTIONS |
25 | |
26 | # We are using a recursive build, so we need to do a little thinking |
27 | # to get the ordering right. |
28 | # |
29 | # Most importantly: sub-Makefiles should only ever modify files in |
30 | # their own directory. If in some directory we have a dependency on |
31 | # a file in another dir (which doesn't happen often, but it's often |
32 | # unavoidable when linking the built-in.o targets which finally |
33 | # turn into vmlinux), we will call a sub make in that other dir, and |
34 | # after that we are sure that everything which is in that other dir |
35 | # is now up to date. |
36 | # |
37 | # The only cases where we need to modify files which have global |
38 | # effects are thus separated out and done before the recursive |
39 | # descending is started. They are now explicitly listed as the |
40 | # prepare rule. |
41 | |
42 | # Beautify output |
43 | # --------------------------------------------------------------------------- |
44 | # |
45 | # Normally, we echo the whole command before executing it. By making |
46 | # that echo $($(quiet)$(cmd)), we now have the possibility to set |
47 | # $(quiet) to choose other forms of output instead, e.g. |
48 | # |
49 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ |
50 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< |
51 | # |
52 | # If $(quiet) is empty, the whole command will be printed. |
53 | # If it is set to "quiet_", only the short version will be printed. |
54 | # If it is set to "silent_", nothing will be printed at all, since |
55 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
56 | # |
57 | # A simple variant is to prefix commands with $(Q) - that's useful |
58 | # for commands that shall be hidden in non-verbose mode. |
59 | # |
60 | # $(Q)ln $@ :< |
61 | # |
62 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. |
63 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. |
64 | # |
65 | # To put more focus on warnings, be less verbose as default |
66 | # Use 'make V=1' to see the full commands |
67 | |
68 | ifeq ("$(origin V)", "command line") |
69 | KBUILD_VERBOSE = $(V) |
70 | endif |
71 | ifndef KBUILD_VERBOSE |
72 | KBUILD_VERBOSE = 0 |
73 | endif |
74 | |
75 | ifeq ($(KBUILD_VERBOSE),1) |
76 | quiet = |
77 | Q = |
78 | else |
79 | quiet=quiet_ |
80 | Q = @ |
81 | endif |
82 | |
83 | # If the user is running make -s (silent mode), suppress echoing of |
84 | # commands |
85 | |
86 | ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 |
87 | ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) |
88 | quiet=silent_ |
89 | endif |
90 | else # make-3.8x |
91 | ifneq ($(filter s% -s%,$(MAKEFLAGS)),) |
92 | quiet=silent_ |
93 | endif |
94 | endif |
95 | |
96 | export quiet Q KBUILD_VERBOSE |
97 | |
98 | # kbuild supports saving output files in a separate directory. |
99 | # To locate output files in a separate directory two syntaxes are supported. |
100 | # In both cases the working directory must be the root of the kernel src. |
101 | # 1) O= |
102 | # Use "make O=dir/to/store/output/files/" |
103 | # |
104 | # 2) Set KBUILD_OUTPUT |
105 | # Set the environment variable KBUILD_OUTPUT to point to the directory |
106 | # where the output files shall be placed. |
107 | # export KBUILD_OUTPUT=dir/to/store/output/files/ |
108 | # make |
109 | # |
110 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment |
111 | # variable. |
112 | |
113 | # KBUILD_SRC is set on invocation of make in OBJ directory |
114 | # KBUILD_SRC is not intended to be used by the regular user (for now) |
115 | ifeq ($(KBUILD_SRC),) |
116 | |
117 | # OK, Make called in directory where kernel src resides |
118 | # Do we want to locate output files in a separate directory? |
119 | ifeq ("$(origin O)", "command line") |
120 | KBUILD_OUTPUT := $(O) |
121 | endif |
122 | |
123 | # That's our default target when none is given on the command line |
124 | PHONY := _all |
125 | _all: |
126 | |
127 | # Cancel implicit rules on top Makefile |
128 | $(CURDIR)/Makefile Makefile: ; |
129 | |
130 | ifneq ($(KBUILD_OUTPUT),) |
131 | # Invoke a second make in the output directory, passing relevant variables |
132 | # check that the output directory actually exists |
133 | saved-output := $(KBUILD_OUTPUT) |
134 | KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ |
135 | && /bin/pwd) |
136 | $(if $(KBUILD_OUTPUT),, \ |
137 | $(error failed to create output directory "$(saved-output)")) |
138 | |
139 | PHONY += $(MAKECMDGOALS) sub-make |
140 | |
141 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
142 | @: |
143 | |
144 | sub-make: FORCE |
145 | $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ |
146 | -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) |
147 | |
148 | # Leave processing to above invocation of make |
149 | skip-makefile := 1 |
150 | endif # ifneq ($(KBUILD_OUTPUT),) |
151 | endif # ifeq ($(KBUILD_SRC),) |
152 | |
153 | # We process the rest of the Makefile if this is the final invocation of make |
154 | ifeq ($(skip-makefile),) |
155 | |
156 | # Do not print "Entering directory ...", |
157 | # but we want to display it when entering to the output directory |
158 | # so that IDEs/editors are able to understand relative filenames. |
159 | MAKEFLAGS += --no-print-directory |
160 | |
161 | # Call a source code checker (by default, "sparse") as part of the |
162 | # C compilation. |
163 | # |
164 | # Use 'make C=1' to enable checking of only re-compiled files. |
165 | # Use 'make C=2' to enable checking of *all* source files, regardless |
166 | # of whether they are re-compiled or not. |
167 | # |
168 | # See the file "Documentation/sparse.txt" for more details, including |
169 | # where to get the "sparse" utility. |
170 | |
171 | ifeq ("$(origin C)", "command line") |
172 | KBUILD_CHECKSRC = $(C) |
173 | endif |
174 | ifndef KBUILD_CHECKSRC |
175 | KBUILD_CHECKSRC = 0 |
176 | endif |
177 | |
178 | # Use make M=dir to specify directory of external module to build |
179 | # Old syntax make ... SUBDIRS=$PWD is still supported |
180 | # Setting the environment variable KBUILD_EXTMOD take precedence |
181 | ifdef SUBDIRS |
182 | KBUILD_EXTMOD ?= $(SUBDIRS) |
183 | endif |
184 | |
185 | ifeq ("$(origin M)", "command line") |
186 | KBUILD_EXTMOD := $(M) |
187 | endif |
188 | |
189 | # If building an external module we do not care about the all: rule |
190 | # but instead _all depend on modules |
191 | PHONY += all |
192 | ifeq ($(KBUILD_EXTMOD),) |
193 | _all: all |
194 | else |
195 | _all: modules |
196 | endif |
197 | |
198 | ifeq ($(KBUILD_SRC),) |
199 | # building in the source tree |
200 | srctree := . |
201 | else |
202 | ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) |
203 | # building in a subdirectory of the source tree |
204 | srctree := .. |
205 | else |
206 | srctree := $(KBUILD_SRC) |
207 | endif |
208 | endif |
209 | objtree := . |
210 | src := $(srctree) |
211 | obj := $(objtree) |
212 | |
213 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
214 | |
215 | export srctree objtree VPATH |
216 | |
217 | |
218 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
219 | # first, and if a usermode build is happening, the "ARCH=um" on the command |
220 | # line overrides the setting of ARCH below. If a native build is happening, |
221 | # then ARCH is assigned, getting whatever value it gets normally, and |
222 | # SUBARCH is subsequently ignored. |
223 | |
224 | SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ |
225 | -e s/sun4u/sparc64/ \ |
226 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
227 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
228 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
229 | -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) |
230 | |
231 | # Cross compiling and selecting different set of gcc/bin-utils |
232 | # --------------------------------------------------------------------------- |
233 | # |
234 | # When performing cross compilation for other architectures ARCH shall be set |
235 | # to the target architecture. (See arch/* for the possibilities). |
236 | # ARCH can be set during invocation of make: |
237 | # make ARCH=ia64 |
238 | # Another way is to have ARCH set in the environment. |
239 | # The default ARCH is the host where make is executed. |
240 | |
241 | # CROSS_COMPILE specify the prefix used for all executables used |
242 | # during compilation. Only gcc and related bin-utils executables |
243 | # are prefixed with $(CROSS_COMPILE). |
244 | # CROSS_COMPILE can be set on the command line |
245 | # make CROSS_COMPILE=ia64-linux- |
246 | # Alternatively CROSS_COMPILE can be set in the environment. |
247 | # A third alternative is to store a setting in .config so that plain |
248 | # "make" in the configured kernel build directory always uses that. |
249 | # Default value for CROSS_COMPILE is not to prefix executables |
250 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
251 | ARCH ?= $(SUBARCH) |
252 | CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
253 | |
254 | # Architecture as present in compile.h |
255 | UTS_MACHINE := $(ARCH) |
256 | SRCARCH := $(ARCH) |
257 | |
258 | # Additional ARCH settings for x86 |
259 | ifeq ($(ARCH),i386) |
260 | SRCARCH := x86 |
261 | endif |
262 | ifeq ($(ARCH),x86_64) |
263 | SRCARCH := x86 |
264 | endif |
265 | |
266 | # Additional ARCH settings for sparc |
267 | ifeq ($(ARCH),sparc32) |
268 | SRCARCH := sparc |
269 | endif |
270 | ifeq ($(ARCH),sparc64) |
271 | SRCARCH := sparc |
272 | endif |
273 | |
274 | # Additional ARCH settings for sh |
275 | ifeq ($(ARCH),sh64) |
276 | SRCARCH := sh |
277 | endif |
278 | |
279 | # Additional ARCH settings for tile |
280 | ifeq ($(ARCH),tilepro) |
281 | SRCARCH := tile |
282 | endif |
283 | ifeq ($(ARCH),tilegx) |
284 | SRCARCH := tile |
285 | endif |
286 | |
287 | # Where to locate arch specific headers |
288 | hdr-arch := $(SRCARCH) |
289 | |
290 | KCONFIG_CONFIG ?= .config |
291 | export KCONFIG_CONFIG |
292 | |
293 | # SHELL used by kbuild |
294 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ |
295 | else if [ -x /bin/bash ]; then echo /bin/bash; \ |
296 | else echo sh; fi ; fi) |
297 | |
298 | HOSTCC = gcc |
299 | HOSTCXX = g++ |
300 | HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 |
301 | HOSTCXXFLAGS = -O2 |
302 | |
303 | ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) |
304 | HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ |
305 | -Wno-missing-field-initializers -fno-delete-null-pointer-checks |
306 | endif |
307 | |
308 | # Decide whether to build built-in, modular, or both. |
309 | # Normally, just do built-in. |
310 | |
311 | KBUILD_MODULES := |
312 | KBUILD_BUILTIN := 1 |
313 | |
314 | # If we have only "make modules", don't compile built-in objects. |
315 | # When we're building modules with modversions, we need to consider |
316 | # the built-in objects during the descend as well, in order to |
317 | # make sure the checksums are up to date before we record them. |
318 | |
319 | ifeq ($(MAKECMDGOALS),modules) |
320 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) |
321 | endif |
322 | |
323 | # If we have "make <whatever> modules", compile modules |
324 | # in addition to whatever we do anyway. |
325 | # Just "make" or "make all" shall build modules as well |
326 | |
327 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) |
328 | KBUILD_MODULES := 1 |
329 | endif |
330 | |
331 | ifeq ($(MAKECMDGOALS),) |
332 | KBUILD_MODULES := 1 |
333 | endif |
334 | |
335 | export KBUILD_MODULES KBUILD_BUILTIN |
336 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
337 | |
338 | ifneq ($(CC),) |
339 | ifeq ($(shell $(CC) -v 2>&1 | grep -c "clang version"), 1) |
340 | COMPILER := clang |
341 | else |
342 | COMPILER := gcc |
343 | endif |
344 | export COMPILER |
345 | endif |
346 | |
347 | # Look for make include files relative to root of kernel src |
348 | MAKEFLAGS += --include-dir=$(srctree) |
349 | |
350 | # We need some generic definitions (do not try to remake the file). |
351 | $(srctree)/scripts/Kbuild.include: ; |
352 | include $(srctree)/scripts/Kbuild.include |
353 | |
354 | # Make variables (CC, etc...) |
355 | AS = $(CROSS_COMPILE)as |
356 | LD = $(CROSS_COMPILE)ld |
357 | CC = $(CROSS_COMPILE)gcc |
358 | CPP = $(CC) -E |
359 | AR = $(CROSS_COMPILE)ar |
360 | NM = $(CROSS_COMPILE)nm |
361 | STRIP = $(CROSS_COMPILE)strip |
362 | OBJCOPY = $(CROSS_COMPILE)objcopy |
363 | OBJDUMP = $(CROSS_COMPILE)objdump |
364 | AWK = awk |
365 | GENKSYMS = scripts/genksyms/genksyms |
366 | INSTALLKERNEL := installkernel |
367 | DEPMOD = /sbin/depmod |
368 | PERL = perl |
369 | PYTHON = python |
370 | CHECK = sparse |
371 | |
372 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
373 | -Wbitwise -Wno-return-void $(CF) |
374 | CFLAGS_MODULE = |
375 | AFLAGS_MODULE = |
376 | LDFLAGS_MODULE = |
377 | CFLAGS_KERNEL = |
378 | AFLAGS_KERNEL = |
379 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
380 | |
381 | |
382 | # Use USERINCLUDE when you must reference the UAPI directories only. |
383 | USERINCLUDE := \ |
384 | -I$(srctree)/arch/$(hdr-arch)/include/uapi \ |
385 | -Iarch/$(hdr-arch)/include/generated/uapi \ |
386 | -I$(srctree)/include/uapi \ |
387 | -Iinclude/generated/uapi \ |
388 | -include $(srctree)/include/linux/kconfig.h |
389 | |
390 | # Use LINUXINCLUDE when you must reference the include/ directory. |
391 | # Needed to be compatible with the O= option |
392 | LINUXINCLUDE := \ |
393 | -I$(srctree)/arch/$(hdr-arch)/include \ |
394 | -Iarch/$(hdr-arch)/include/generated \ |
395 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ |
396 | -Iinclude \ |
397 | $(USERINCLUDE) |
398 | |
399 | KBUILD_CPPFLAGS := -D__KERNEL__ |
400 | |
401 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
402 | -fno-strict-aliasing -fno-common \ |
403 | -Werror-implicit-function-declaration \ |
404 | -Wno-format-security \ |
405 | -std=gnu89 |
406 | |
407 | KBUILD_AFLAGS_KERNEL := |
408 | KBUILD_CFLAGS_KERNEL := |
409 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
410 | KBUILD_AFLAGS_MODULE := -DMODULE |
411 | KBUILD_CFLAGS_MODULE := -DMODULE |
412 | KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds |
413 | |
414 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
415 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) |
416 | KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) |
417 | |
418 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
419 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
420 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
421 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE |
422 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
423 | |
424 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
425 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
426 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
427 | export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
428 | export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
429 | export KBUILD_ARFLAGS |
430 | |
431 | # When compiling out-of-tree modules, put MODVERDIR in the module |
432 | # tree rather than in the kernel tree. The kernel tree might |
433 | # even be read-only. |
434 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
435 | |
436 | # Files to ignore in find ... statements |
437 | |
438 | export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ |
439 | -name CVS -o -name .pc -o -name .hg -o -name .git \) \ |
440 | -prune -o |
441 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ |
442 | --exclude CVS --exclude .pc --exclude .hg --exclude .git |
443 | |
444 | # =========================================================================== |
445 | # Rules shared between *config targets and build targets |
446 | |
447 | # Basic helpers built in scripts/ |
448 | PHONY += scripts_basic |
449 | scripts_basic: |
450 | $(Q)$(MAKE) $(build)=scripts/basic |
451 | $(Q)rm -f .tmp_quiet_recordmcount |
452 | |
453 | # To avoid any implicit rule to kick in, define an empty command. |
454 | scripts/basic/%: scripts_basic ; |
455 | |
456 | PHONY += outputmakefile |
457 | # outputmakefile generates a Makefile in the output directory, if using a |
458 | # separate output directory. This allows convenient use of make in the |
459 | # output directory. |
460 | outputmakefile: |
461 | ifneq ($(KBUILD_SRC),) |
462 | $(Q)ln -fsn $(srctree) source |
463 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
464 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) |
465 | endif |
466 | |
467 | # Support for using generic headers in asm-generic |
468 | PHONY += asm-generic |
469 | asm-generic: |
470 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
471 | src=asm obj=arch/$(SRCARCH)/include/generated/asm |
472 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
473 | src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm |
474 | |
475 | # To make sure we do not include .config for any of the *config targets |
476 | # catch them early, and hand them over to scripts/kconfig/Makefile |
477 | # It is allowed to specify more targets when calling make, including |
478 | # mixing *config targets and build targets. |
479 | # For example 'make oldconfig all'. |
480 | # Detect when mixed targets is specified, and make a second invocation |
481 | # of make so .config is not included in this case either (for *config). |
482 | |
483 | version_h := include/generated/uapi/linux/version.h |
484 | |
485 | no-dot-config-targets := clean mrproper distclean \ |
486 | cscope gtags TAGS tags help %docs check% coccicheck \ |
487 | $(version_h) headers_% archheaders archscripts \ |
488 | kernelversion %src-pkg |
489 | |
490 | config-targets := 0 |
491 | mixed-targets := 0 |
492 | dot-config := 1 |
493 | |
494 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) |
495 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) |
496 | dot-config := 0 |
497 | endif |
498 | endif |
499 | |
500 | ifeq ($(KBUILD_EXTMOD),) |
501 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) |
502 | config-targets := 1 |
503 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) |
504 | mixed-targets := 1 |
505 | endif |
506 | endif |
507 | endif |
508 | |
509 | ifeq ($(mixed-targets),1) |
510 | # =========================================================================== |
511 | # We're called with mixed targets (*config and build targets). |
512 | # Handle them one by one. |
513 | |
514 | PHONY += $(MAKECMDGOALS) __build_one_by_one |
515 | |
516 | $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one |
517 | @: |
518 | |
519 | __build_one_by_one: |
520 | $(Q)set -e; \ |
521 | for i in $(MAKECMDGOALS); do \ |
522 | $(MAKE) -f $(srctree)/Makefile $$i; \ |
523 | done |
524 | |
525 | else |
526 | ifeq ($(config-targets),1) |
527 | # =========================================================================== |
528 | # *config targets only - make sure prerequisites are updated, and descend |
529 | # in scripts/kconfig to make the *config target |
530 | |
531 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. |
532 | # KBUILD_DEFCONFIG may point out an alternative default configuration |
533 | # used for 'make defconfig' |
534 | include $(srctree)/arch/$(SRCARCH)/Makefile |
535 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
536 | |
537 | config: scripts_basic outputmakefile FORCE |
538 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
539 | |
540 | %config: scripts_basic outputmakefile FORCE |
541 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
542 | |
543 | else |
544 | # =========================================================================== |
545 | # Build targets only - this includes vmlinux, arch specific targets, clean |
546 | # targets and others. In general all targets except *config targets. |
547 | |
548 | ifeq ($(KBUILD_EXTMOD),) |
549 | # Additional helpers built in scripts/ |
550 | # Carefully list dependencies so we do not try to build scripts twice |
551 | # in parallel |
552 | PHONY += scripts |
553 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ |
554 | asm-generic |
555 | $(Q)$(MAKE) $(build)=$(@) |
556 | |
557 | # Objects we will link into vmlinux / subdirs we need to visit |
558 | init-y := init/ |
559 | drivers-y := drivers/ sound/ firmware/ |
560 | net-y := net/ |
561 | libs-y := lib/ |
562 | core-y := usr/ |
563 | endif # KBUILD_EXTMOD |
564 | |
565 | ifeq ($(dot-config),1) |
566 | # Read in config |
567 | -include include/config/auto.conf |
568 | |
569 | ifeq ($(KBUILD_EXTMOD),) |
570 | # Read in dependencies to all Kconfig* files, make sure to run |
571 | # oldconfig if changes are detected. |
572 | -include include/config/auto.conf.cmd |
573 | |
574 | # To avoid any implicit rule to kick in, define an empty command |
575 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
576 | |
577 | # If .config is newer than include/config/auto.conf, someone tinkered |
578 | # with it and forgot to run make oldconfig. |
579 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
580 | # we execute the config step to be sure to catch updated Kconfig files |
581 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
582 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
583 | else |
584 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
585 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
586 | PHONY += include/config/auto.conf |
587 | |
588 | include/config/auto.conf: |
589 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
590 | echo >&2; \ |
591 | echo >&2 " ERROR: Kernel configuration is invalid."; \ |
592 | echo >&2 " include/generated/autoconf.h or $@ are missing.";\ |
593 | echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ |
594 | echo >&2 ; \ |
595 | /bin/false) |
596 | |
597 | endif # KBUILD_EXTMOD |
598 | |
599 | else |
600 | # Dummy target needed, because used as prerequisite |
601 | include/config/auto.conf: ; |
602 | endif # $(dot-config) |
603 | |
604 | # The all: target is the default when no target is given on the |
605 | # command line. |
606 | # This allow a user to issue only 'make' to build a kernel including modules |
607 | # Defaults to vmlinux, but the arch makefile usually adds further targets |
608 | all: vmlinux |
609 | |
610 | include $(srctree)/arch/$(SRCARCH)/Makefile |
611 | |
612 | KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) |
613 | |
614 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
615 | KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) |
616 | else |
617 | KBUILD_CFLAGS += -O2 |
618 | endif |
619 | |
620 | # Tell gcc to never replace conditional load with a non-conditional one |
621 | KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) |
622 | |
623 | ifdef CONFIG_READABLE_ASM |
624 | # Disable optimizations that make assembler listings hard to read. |
625 | # reorder blocks reorders the control in the function |
626 | # ipa clone creates specialized cloned functions |
627 | # partial inlining inlines only parts of functions |
628 | KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ |
629 | $(call cc-option,-fno-ipa-cp-clone,) \ |
630 | $(call cc-option,-fno-partial-inlining) |
631 | endif |
632 | |
633 | ifneq ($(CONFIG_FRAME_WARN),0) |
634 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
635 | endif |
636 | |
637 | # Handle stack protector mode. |
638 | # |
639 | # Since kbuild can potentially perform two passes (first with the old |
640 | # .config values and then with updated .config values), we cannot error out |
641 | # if a desired compiler option is unsupported. If we were to error, kbuild |
642 | # could never get to the second pass and actually notice that we changed |
643 | # the option to something that was supported. |
644 | # |
645 | # Additionally, we don't want to fallback and/or silently change which compiler |
646 | # flags will be used, since that leads to producing kernels with different |
647 | # security feature characteristics depending on the compiler used. ("But I |
648 | # selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") |
649 | # |
650 | # The middle ground is to warn here so that the failed option is obvious, but |
651 | # to let the build fail with bad compiler flags so that we can't produce a |
652 | # kernel when there is a CONFIG and compiler mismatch. |
653 | # |
654 | ifdef CONFIG_CC_STACKPROTECTOR_REGULAR |
655 | stackp-flag := -fstack-protector |
656 | ifeq ($(call cc-option, $(stackp-flag)),) |
657 | $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \ |
658 | -fstack-protector not supported by compiler) |
659 | endif |
660 | else |
661 | ifdef CONFIG_CC_STACKPROTECTOR_STRONG |
662 | stackp-flag := -fstack-protector-strong |
663 | ifeq ($(call cc-option, $(stackp-flag)),) |
664 | $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \ |
665 | -fstack-protector-strong not supported by compiler) |
666 | endif |
667 | else |
668 | # Force off for distro compilers that enable stack protector by default. |
669 | stackp-flag := $(call cc-option, -fno-stack-protector) |
670 | endif |
671 | endif |
672 | KBUILD_CFLAGS += $(stackp-flag) |
673 | |
674 | ifeq ($(COMPILER),clang) |
675 | KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) |
676 | KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,) |
677 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) |
678 | KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) |
679 | KBUILD_CFLAGS += $(call cc-disable-warning, gnu) |
680 | # Quiet clang warning: comparison of unsigned expression < 0 is always false |
681 | KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) |
682 | # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the |
683 | # source of a reference will be _MergedGlobals and not on of the whitelisted names. |
684 | # See modpost pattern 2 |
685 | KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) |
686 | KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) |
687 | else |
688 | |
689 | # This warning generated too much noise in a regular build. |
690 | # Use make W=1 to enable this warning (see scripts/Makefile.build) |
691 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) |
692 | endif |
693 | |
694 | ifdef CONFIG_FRAME_POINTER |
695 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
696 | else |
697 | # Some targets (ARM with Thumb2, for example), can't be built with frame |
698 | # pointers. For those, we don't have FUNCTION_TRACER automatically |
699 | # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is |
700 | # incompatible with -fomit-frame-pointer with current GCC, so we don't use |
701 | # -fomit-frame-pointer with FUNCTION_TRACER. |
702 | ifndef CONFIG_FUNCTION_TRACER |
703 | KBUILD_CFLAGS += -fomit-frame-pointer |
704 | endif |
705 | endif |
706 | |
707 | KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) |
708 | |
709 | ifdef CONFIG_DEBUG_INFO |
710 | ifdef CONFIG_DEBUG_INFO_SPLIT |
711 | KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) |
712 | else |
713 | KBUILD_CFLAGS += -g |
714 | endif |
715 | KBUILD_AFLAGS += -Wa,-gdwarf-2 |
716 | endif |
717 | ifdef CONFIG_DEBUG_INFO_DWARF4 |
718 | KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) |
719 | endif |
720 | |
721 | ifdef CONFIG_DEBUG_INFO_REDUCED |
722 | KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ |
723 | $(call cc-option,-fno-var-tracking) |
724 | endif |
725 | |
726 | ifdef CONFIG_FUNCTION_TRACER |
727 | ifdef CONFIG_HAVE_FENTRY |
728 | CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) |
729 | endif |
730 | KBUILD_CFLAGS += -pg $(CC_USING_FENTRY) |
731 | KBUILD_AFLAGS += $(CC_USING_FENTRY) |
732 | ifdef CONFIG_DYNAMIC_FTRACE |
733 | ifdef CONFIG_HAVE_C_RECORDMCOUNT |
734 | BUILD_C_RECORDMCOUNT := y |
735 | export BUILD_C_RECORDMCOUNT |
736 | endif |
737 | endif |
738 | endif |
739 | |
740 | # We trigger additional mismatches with less inlining |
741 | ifdef CONFIG_DEBUG_SECTION_MISMATCH |
742 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) |
743 | endif |
744 | |
745 | # arch Makefile may override CC so keep this after arch Makefile is included |
746 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
747 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
748 | |
749 | # warn about C99 declaration after statement |
750 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
751 | |
752 | # disable pointer signed / unsigned warnings in gcc 4.0 |
753 | KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
754 | |
755 | # disable invalid "can't wrap" optimizations for signed / pointers |
756 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
757 | |
758 | # conserve stack if available |
759 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) |
760 | |
761 | # disallow errors like 'EXPORT_GPL(foo);' with missing header |
762 | KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) |
763 | |
764 | # require functions to have arguments in prototypes, not empty 'int foo()' |
765 | KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) |
766 | |
767 | # Prohibit date/time macros, which would make the build non-deterministic |
768 | KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) |
769 | |
770 | # use the deterministic mode of AR if available |
771 | KBUILD_ARFLAGS := $(call ar-option,D) |
772 | |
773 | # check for 'asm goto' |
774 | ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) |
775 | KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO |
776 | endif |
777 | |
778 | include $(srctree)/scripts/Makefile.extrawarn |
779 | |
780 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
781 | KBUILD_CPPFLAGS += $(KCPPFLAGS) |
782 | KBUILD_AFLAGS += $(KAFLAGS) |
783 | KBUILD_CFLAGS += $(KCFLAGS) |
784 | |
785 | # Use --build-id when available. |
786 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ |
787 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
788 | KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
789 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
790 | |
791 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
792 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
793 | endif |
794 | |
795 | # Default kernel image to build when no specific target is given. |
796 | # KBUILD_IMAGE may be overruled on the command line or |
797 | # set in the environment |
798 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over |
799 | # this default value |
800 | export KBUILD_IMAGE ?= vmlinux |
801 | |
802 | # |
803 | # INSTALL_PATH specifies where to place the updated kernel and system map |
804 | # images. Default is /boot, but you can set it to other values |
805 | export INSTALL_PATH ?= /boot |
806 | |
807 | # |
808 | # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. |
809 | # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as |
810 | # an argument if needed. Otherwise it defaults to the kernel install path |
811 | # |
812 | export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) |
813 | |
814 | # |
815 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory |
816 | # relocations required by build roots. This is not defined in the |
817 | # makefile but the argument can be passed to make if needed. |
818 | # |
819 | |
820 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
821 | export MODLIB |
822 | |
823 | # |
824 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
825 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then |
826 | # the default option --strip-debug will be used. Otherwise, |
827 | # INSTALL_MOD_STRIP value will be used as the options to the strip command. |
828 | |
829 | ifdef INSTALL_MOD_STRIP |
830 | ifeq ($(INSTALL_MOD_STRIP),1) |
831 | mod_strip_cmd = $(STRIP) --strip-debug |
832 | else |
833 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
834 | endif # INSTALL_MOD_STRIP=1 |
835 | else |
836 | mod_strip_cmd = true |
837 | endif # INSTALL_MOD_STRIP |
838 | export mod_strip_cmd |
839 | |
840 | # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed |
841 | # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP |
842 | # or CONFIG_MODULE_COMPRESS_XZ. |
843 | |
844 | mod_compress_cmd = true |
845 | ifdef CONFIG_MODULE_COMPRESS |
846 | ifdef CONFIG_MODULE_COMPRESS_GZIP |
847 | mod_compress_cmd = gzip -n |
848 | endif # CONFIG_MODULE_COMPRESS_GZIP |
849 | ifdef CONFIG_MODULE_COMPRESS_XZ |
850 | mod_compress_cmd = xz |
851 | endif # CONFIG_MODULE_COMPRESS_XZ |
852 | endif # CONFIG_MODULE_COMPRESS |
853 | export mod_compress_cmd |
854 | |
855 | # Select initial ramdisk compression format, default is gzip(1). |
856 | # This shall be used by the dracut(8) tool while creating an initramfs image. |
857 | # |
858 | INITRD_COMPRESS-y := gzip |
859 | INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 |
860 | INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma |
861 | INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz |
862 | INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo |
863 | INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 |
864 | # do not export INITRD_COMPRESS, since we didn't actually |
865 | # choose a sane default compression above. |
866 | # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) |
867 | |
868 | ifdef CONFIG_MODULE_SIG_ALL |
869 | MODSECKEY = ./signing_key.priv |
870 | MODPUBKEY = ./signing_key.x509 |
871 | export MODPUBKEY |
872 | mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY) |
873 | else |
874 | mod_sign_cmd = true |
875 | endif |
876 | export mod_sign_cmd |
877 | |
878 | |
879 | ifeq ($(KBUILD_EXTMOD),) |
880 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
881 | |
882 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ |
883 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ |
884 | $(net-y) $(net-m) $(libs-y) $(libs-m))) |
885 | |
886 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ |
887 | $(init-) $(core-) $(drivers-) $(net-) $(libs-)))) |
888 | |
889 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) |
890 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) |
891 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) |
892 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) |
893 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
894 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) |
895 | libs-y := $(libs-y1) $(libs-y2) |
896 | |
897 | # Externally visible symbols (used by link-vmlinux.sh) |
898 | export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) |
899 | export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) |
900 | export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds |
901 | export LDFLAGS_vmlinux |
902 | # used by scripts/pacmage/Makefile |
903 | export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) |
904 | |
905 | vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) |
906 | |
907 | # Final link of vmlinux |
908 | cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) |
909 | quiet_cmd_link-vmlinux = LINK $@ |
910 | |
911 | # Include targets which we want to |
912 | # execute if the rest of the kernel build went well. |
913 | vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE |
914 | ifdef CONFIG_HEADERS_CHECK |
915 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
916 | endif |
917 | ifdef CONFIG_SAMPLES |
918 | $(Q)$(MAKE) $(build)=samples |
919 | endif |
920 | ifdef CONFIG_BUILD_DOCSRC |
921 | $(Q)$(MAKE) $(build)=Documentation |
922 | endif |
923 | +$(call if_changed,link-vmlinux) |
924 | |
925 | # The actual objects are generated when descending, |
926 | # make sure no implicit rule kicks in |
927 | $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
928 | |
929 | # Handle descending into subdirectories listed in $(vmlinux-dirs) |
930 | # Preset locale variables to speed up the build process. Limit locale |
931 | # tweaks to this spot to avoid wrong language settings when running |
932 | # make menuconfig etc. |
933 | # Error messages still appears in the original language |
934 | |
935 | PHONY += $(vmlinux-dirs) |
936 | $(vmlinux-dirs): prepare scripts |
937 | $(Q)$(MAKE) $(build)=$@ |
938 | |
939 | define filechk_kernel.release |
940 | echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
941 | endef |
942 | |
943 | # Store (new) KERNELRELEASE string in include/config/kernel.release |
944 | include/config/kernel.release: include/config/auto.conf FORCE |
945 | $(call filechk,kernel.release) |
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 $(srctree) |
960 | prepare3: include/config/kernel.release |
961 | ifneq ($(KBUILD_SRC),) |
962 | @$(kecho) ' Using $(srctree) as source for kernel' |
963 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
964 | echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ |
965 | echo >&2 " in the '$(srctree)' directory.";\ |
966 | /bin/false; \ |
967 | fi; |
968 | endif |
969 | |
970 | # prepare2 creates a makefile if using a separate output directory |
971 | prepare2: prepare3 outputmakefile asm-generic |
972 | |
973 | prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ |
974 | include/config/auto.conf |
975 | $(cmd_crmodverdir) |
976 | |
977 | archprepare: archheaders archscripts prepare1 scripts_basic |
978 | |
979 | prepare0: archprepare FORCE |
980 | $(Q)$(MAKE) $(build)=. |
981 | |
982 | # All the preparing.. |
983 | prepare: prepare0 |
984 | |
985 | # Generate some files |
986 | # --------------------------------------------------------------------------- |
987 | |
988 | # KERNELRELEASE can change from a few different places, meaning version.h |
989 | # needs to be updated, so this check is forced on all builds |
990 | |
991 | uts_len := 64 |
992 | define filechk_utsrelease.h |
993 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ |
994 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ |
995 | exit 1; \ |
996 | fi; \ |
997 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) |
998 | endef |
999 | |
1000 | define filechk_version.h |
1001 | (echo \#define LINUX_VERSION_CODE $(shell \ |
1002 | expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ |
1003 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
1004 | endef |
1005 | |
1006 | $(version_h): $(srctree)/Makefile FORCE |
1007 | $(call filechk,version.h) |
1008 | |
1009 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
1010 | $(call filechk,utsrelease.h) |
1011 | |
1012 | PHONY += headerdep |
1013 | headerdep: |
1014 | $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ |
1015 | $(srctree)/scripts/headerdep.pl -I$(srctree)/include |
1016 | |
1017 | # --------------------------------------------------------------------------- |
1018 | |
1019 | PHONY += depend dep |
1020 | depend dep: |
1021 | @echo '*** Warning: make $@ is unnecessary now.' |
1022 | |
1023 | # --------------------------------------------------------------------------- |
1024 | # Firmware install |
1025 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware |
1026 | export INSTALL_FW_PATH |
1027 | |
1028 | PHONY += firmware_install |
1029 | firmware_install: FORCE |
1030 | @mkdir -p $(objtree)/firmware |
1031 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install |
1032 | |
1033 | # --------------------------------------------------------------------------- |
1034 | # Kernel headers |
1035 | |
1036 | #Default location for installed headers |
1037 | export INSTALL_HDR_PATH = $(objtree)/usr |
1038 | |
1039 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
1040 | |
1041 | # If we do an all arch process set dst to asm-$(hdr-arch) |
1042 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) |
1043 | |
1044 | PHONY += archheaders |
1045 | archheaders: |
1046 | |
1047 | PHONY += archscripts |
1048 | archscripts: |
1049 | |
1050 | PHONY += __headers |
1051 | __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE |
1052 | $(Q)$(MAKE) $(build)=scripts build_unifdef |
1053 | |
1054 | PHONY += headers_install_all |
1055 | headers_install_all: |
1056 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install |
1057 | |
1058 | PHONY += headers_install |
1059 | headers_install: __headers |
1060 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ |
1061 | $(error Headers not exportable for the $(SRCARCH) architecture)) |
1062 | $(Q)$(MAKE) $(hdr-inst)=include/uapi |
1063 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) |
1064 | |
1065 | PHONY += headers_check_all |
1066 | headers_check_all: headers_install_all |
1067 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
1068 | |
1069 | PHONY += headers_check |
1070 | headers_check: headers_install |
1071 | $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 |
1072 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 |
1073 | |
1074 | # --------------------------------------------------------------------------- |
1075 | # Kernel selftest |
1076 | |
1077 | PHONY += kselftest |
1078 | kselftest: |
1079 | $(Q)$(MAKE) -C tools/testing/selftests run_tests |
1080 | |
1081 | # --------------------------------------------------------------------------- |
1082 | # Modules |
1083 | |
1084 | ifdef CONFIG_MODULES |
1085 | |
1086 | # By default, build modules as well |
1087 | |
1088 | all: modules |
1089 | |
1090 | # Build modules |
1091 | # |
1092 | # A module can be listed more than once in obj-m resulting in |
1093 | # duplicate lines in modules.order files. Those are removed |
1094 | # using awk while concatenating to the final file. |
1095 | |
1096 | PHONY += modules |
1097 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
1098 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
1099 | @$(kecho) ' Building modules, stage 2.'; |
1100 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1101 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
1102 | |
1103 | modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
1104 | $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin |
1105 | |
1106 | %/modules.builtin: include/config/auto.conf |
1107 | $(Q)$(MAKE) $(modbuiltin)=$* |
1108 | |
1109 | |
1110 | # Target to prepare building external modules |
1111 | PHONY += modules_prepare |
1112 | modules_prepare: prepare scripts |
1113 | |
1114 | # Target to install modules |
1115 | PHONY += modules_install |
1116 | modules_install: _modinst_ _modinst_post |
1117 | |
1118 | PHONY += _modinst_ |
1119 | _modinst_: |
1120 | @rm -rf $(MODLIB)/kernel |
1121 | @rm -f $(MODLIB)/source |
1122 | @mkdir -p $(MODLIB)/kernel |
1123 | @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source |
1124 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
1125 | rm -f $(MODLIB)/build ; \ |
1126 | ln -s $(CURDIR) $(MODLIB)/build ; \ |
1127 | fi |
1128 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
1129 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
1130 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1131 | |
1132 | # This depmod is only for convenience to give the initial |
1133 | # boot a modules.dep even before / is mounted read-write. However the |
1134 | # boot script depmod is the master version. |
1135 | PHONY += _modinst_post |
1136 | _modinst_post: _modinst_ |
1137 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
1138 | $(call cmd,depmod) |
1139 | |
1140 | ifeq ($(CONFIG_MODULE_SIG), y) |
1141 | PHONY += modules_sign |
1142 | modules_sign: |
1143 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign |
1144 | endif |
1145 | |
1146 | else # CONFIG_MODULES |
1147 | |
1148 | # Modules not configured |
1149 | # --------------------------------------------------------------------------- |
1150 | |
1151 | modules modules_install: FORCE |
1152 | @echo >&2 |
1153 | @echo >&2 "The present kernel configuration has modules disabled." |
1154 | @echo >&2 "Type 'make config' and enable loadable module support." |
1155 | @echo >&2 "Then build a kernel with module support enabled." |
1156 | @echo >&2 |
1157 | @exit 1 |
1158 | |
1159 | endif # CONFIG_MODULES |
1160 | |
1161 | ### |
1162 | # Cleaning is done on three levels. |
1163 | # make clean Delete most generated files |
1164 | # Leave enough to build external modules |
1165 | # make mrproper Delete the current configuration, and all generated files |
1166 | # make distclean Remove editor backup files, patch leftover files and the like |
1167 | |
1168 | # Directories & files removed with 'make clean' |
1169 | CLEAN_DIRS += $(MODVERDIR) |
1170 | |
1171 | # Directories & files removed with 'make mrproper' |
1172 | MRPROPER_DIRS += include/config usr/include include/generated \ |
1173 | arch/*/include/generated .tmp_objdiff |
1174 | MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \ |
1175 | Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ |
1176 | signing_key.priv signing_key.x509 x509.genkey \ |
1177 | extra_certificates signing_key.x509.keyid \ |
1178 | signing_key.x509.signer include/linux/version.h |
1179 | |
1180 | # clean - Delete most, but leave enough to build external modules |
1181 | # |
1182 | clean: rm-dirs := $(CLEAN_DIRS) |
1183 | clean: rm-files := $(CLEAN_FILES) |
1184 | clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) |
1185 | |
1186 | PHONY += $(clean-dirs) clean archclean vmlinuxclean |
1187 | $(clean-dirs): |
1188 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
1189 | |
1190 | vmlinuxclean: |
1191 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean |
1192 | |
1193 | clean: archclean vmlinuxclean |
1194 | |
1195 | # mrproper - Delete all generated files, including .config |
1196 | # |
1197 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) |
1198 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
1199 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) |
1200 | |
1201 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1202 | $(mrproper-dirs): |
1203 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) |
1204 | |
1205 | mrproper: clean archmrproper $(mrproper-dirs) |
1206 | $(call cmd,rmdirs) |
1207 | $(call cmd,rmfiles) |
1208 | |
1209 | # distclean |
1210 | # |
1211 | PHONY += distclean |
1212 | |
1213 | distclean: mrproper |
1214 | @find $(srctree) $(RCS_FIND_IGNORE) \ |
1215 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1216 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
1217 | -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \ |
1218 | -type f -print | xargs rm -f |
1219 | |
1220 | |
1221 | # Packaging of the kernel to various formats |
1222 | # --------------------------------------------------------------------------- |
1223 | # rpm target kept for backward compatibility |
1224 | package-dir := scripts/package |
1225 | |
1226 | %src-pkg: FORCE |
1227 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1228 | %pkg: include/config/kernel.release FORCE |
1229 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1230 | rpm: include/config/kernel.release FORCE |
1231 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1232 | |
1233 | |
1234 | # Brief documentation of the typical targets used |
1235 | # --------------------------------------------------------------------------- |
1236 | |
1237 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
1238 | boards := $(notdir $(boards)) |
1239 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
1240 | board-dirs := $(sort $(notdir $(board-dirs:/=))) |
1241 | |
1242 | help: |
1243 | @echo 'Cleaning targets:' |
1244 | @echo ' clean - Remove most generated files but keep the config and' |
1245 | @echo ' enough build support to build external modules' |
1246 | @echo ' mrproper - Remove all generated files + config + various backup files' |
1247 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1248 | @echo '' |
1249 | @echo 'Configuration targets:' |
1250 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help |
1251 | @echo '' |
1252 | @echo 'Other generic targets:' |
1253 | @echo ' all - Build all targets marked with [*]' |
1254 | @echo '* vmlinux - Build the bare kernel' |
1255 | @echo '* modules - Build all modules' |
1256 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
1257 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
1258 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' |
1259 | @echo ' dir/ - Build all files in dir and below' |
1260 | @echo ' dir/file.[oisS] - Build specified target only' |
1261 | @echo ' dir/file.lst - Build specified mixed source/assembly target only' |
1262 | @echo ' (requires a recent binutils and recent build (System.map))' |
1263 | @echo ' dir/file.ko - Build module including final link' |
1264 | @echo ' modules_prepare - Set up for building external modules' |
1265 | @echo ' tags/TAGS - Generate tags file for editors' |
1266 | @echo ' cscope - Generate cscope index' |
1267 | @echo ' gtags - Generate GNU GLOBAL index' |
1268 | @echo ' kernelrelease - Output the release version string (use with make -s)' |
1269 | @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' |
1270 | @echo ' image_name - Output the image name (use with make -s)' |
1271 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
1272 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
1273 | echo '' |
1274 | @echo 'Static analysers' |
1275 | @echo ' checkstack - Generate a list of stack hogs' |
1276 | @echo ' namespacecheck - Name space analysis on compiled kernel' |
1277 | @echo ' versioncheck - Sanity check on version.h usage' |
1278 | @echo ' includecheck - Check for duplicate included header files' |
1279 | @echo ' export_report - List the usages of all exported symbols' |
1280 | @echo ' headers_check - Sanity check on exported headers' |
1281 | @echo ' headerdep - Detect inclusion cycles in headers' |
1282 | @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help |
1283 | @echo '' |
1284 | @echo 'Kernel selftest' |
1285 | @echo ' kselftest - Build and run kernel selftest (run as root)' |
1286 | @echo ' Build, install, and boot kernel before' |
1287 | @echo ' running kselftest on it' |
1288 | @echo '' |
1289 | @echo 'Kernel packaging:' |
1290 | @$(MAKE) $(build)=$(package-dir) help |
1291 | @echo '' |
1292 | @echo 'Documentation targets:' |
1293 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp |
1294 | @echo '' |
1295 | @echo 'Architecture specific targets ($(SRCARCH)):' |
1296 | @$(if $(archhelp),$(archhelp),\ |
1297 | echo ' No architecture specific help defined for $(SRCARCH)') |
1298 | @echo '' |
1299 | @$(if $(boards), \ |
1300 | $(foreach b, $(boards), \ |
1301 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ |
1302 | echo '') |
1303 | @$(if $(board-dirs), \ |
1304 | $(foreach b, $(board-dirs), \ |
1305 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ |
1306 | printf " %-16s - Show all of the above\\n" help-boards; \ |
1307 | echo '') |
1308 | |
1309 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' |
1310 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1311 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
1312 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
1313 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
1314 | @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
1315 | @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' |
1316 | @echo ' 1: warnings which may be relevant and do not occur too often' |
1317 | @echo ' 2: warnings which occur quite often but may still be relevant' |
1318 | @echo ' 3: more obscure warnings, can most likely be ignored' |
1319 | @echo ' Multiple levels can be combined with W=12 or W=123' |
1320 | @echo '' |
1321 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' |
1322 | @echo 'For further info see the ./README file' |
1323 | |
1324 | |
1325 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
1326 | |
1327 | help-boards: $(help-board-dirs) |
1328 | |
1329 | boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) |
1330 | |
1331 | $(help-board-dirs): help-%: |
1332 | @echo 'Architecture specific targets ($(SRCARCH) $*):' |
1333 | @$(if $(boards-per-dir), \ |
1334 | $(foreach b, $(boards-per-dir), \ |
1335 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ |
1336 | echo '') |
1337 | |
1338 | |
1339 | # Documentation targets |
1340 | # --------------------------------------------------------------------------- |
1341 | %docs: scripts_basic FORCE |
1342 | $(Q)$(MAKE) $(build)=scripts build_docproc |
1343 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
1344 | |
1345 | else # KBUILD_EXTMOD |
1346 | |
1347 | ### |
1348 | # External module support. |
1349 | # When building external modules the kernel used as basis is considered |
1350 | # read-only, and no consistency checks are made and the make |
1351 | # system is not used on the basis kernel. If updates are required |
1352 | # in the basis kernel ordinary make commands (without M=...) must |
1353 | # be used. |
1354 | # |
1355 | # The following are the only valid targets when building external |
1356 | # modules. |
1357 | # make M=dir clean Delete all automatically generated files |
1358 | # make M=dir modules Make all modules in specified dir |
1359 | # make M=dir Same as 'make M=dir modules' |
1360 | # make M=dir modules_install |
1361 | # Install the modules built in the module directory |
1362 | # Assumes install directory is already created |
1363 | |
1364 | # We are always building modules |
1365 | KBUILD_MODULES := 1 |
1366 | PHONY += crmodverdir |
1367 | crmodverdir: |
1368 | $(cmd_crmodverdir) |
1369 | |
1370 | PHONY += $(objtree)/Module.symvers |
1371 | $(objtree)/Module.symvers: |
1372 | @test -e $(objtree)/Module.symvers || ( \ |
1373 | echo; \ |
1374 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ |
1375 | echo " is missing; modules will have no dependencies and modversions."; \ |
1376 | echo ) |
1377 | |
1378 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
1379 | PHONY += $(module-dirs) modules |
1380 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1381 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) |
1382 | |
1383 | modules: $(module-dirs) |
1384 | @$(kecho) ' Building modules, stage 2.'; |
1385 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1386 | |
1387 | PHONY += modules_install |
1388 | modules_install: _emodinst_ _emodinst_post |
1389 | |
1390 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1391 | PHONY += _emodinst_ |
1392 | _emodinst_: |
1393 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
1394 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1395 | |
1396 | PHONY += _emodinst_post |
1397 | _emodinst_post: _emodinst_ |
1398 | $(call cmd,depmod) |
1399 | |
1400 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1401 | |
1402 | PHONY += $(clean-dirs) clean |
1403 | $(clean-dirs): |
1404 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
1405 | |
1406 | clean: rm-dirs := $(MODVERDIR) |
1407 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
1408 | |
1409 | help: |
1410 | @echo ' Building external modules.' |
1411 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' |
1412 | @echo '' |
1413 | @echo ' modules - default target, build the module(s)' |
1414 | @echo ' modules_install - install the module' |
1415 | @echo ' clean - remove generated files in module directory only' |
1416 | @echo '' |
1417 | |
1418 | # Dummies... |
1419 | PHONY += prepare scripts |
1420 | prepare: ; |
1421 | scripts: ; |
1422 | endif # KBUILD_EXTMOD |
1423 | |
1424 | clean: $(clean-dirs) |
1425 | $(call cmd,rmdirs) |
1426 | $(call cmd,rmfiles) |
1427 | @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
1428 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
1429 | -o -name '*.ko.*' \ |
1430 | -o -name '*.dwo' \ |
1431 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
1432 | -o -name '*.symtypes' -o -name 'modules.order' \ |
1433 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ |
1434 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
1435 | |
1436 | # Generate tags for editors |
1437 | # --------------------------------------------------------------------------- |
1438 | quiet_cmd_tags = GEN $@ |
1439 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ |
1440 | |
1441 | tags TAGS cscope gtags: FORCE |
1442 | $(call cmd,tags) |
1443 | |
1444 | # Scripts to check various things for consistency |
1445 | # --------------------------------------------------------------------------- |
1446 | |
1447 | PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
1448 | |
1449 | includecheck: |
1450 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1451 | -name '*.[hcS]' -type f -print | sort \ |
1452 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1453 | |
1454 | versioncheck: |
1455 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1456 | -name '*.[hcS]' -type f -print | sort \ |
1457 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1458 | |
1459 | coccicheck: |
1460 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ |
1461 | |
1462 | namespacecheck: |
1463 | $(PERL) $(srctree)/scripts/namespace.pl |
1464 | |
1465 | export_report: |
1466 | $(PERL) $(srctree)/scripts/export_report.pl |
1467 | |
1468 | endif #ifeq ($(config-targets),1) |
1469 | endif #ifeq ($(mixed-targets),1) |
1470 | |
1471 | PHONY += checkstack kernelrelease kernelversion image_name |
1472 | |
1473 | # UML needs a little special treatment here. It wants to use the host |
1474 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone |
1475 | # else wants $(ARCH), including people doing cross-builds, which means |
1476 | # that $(SUBARCH) doesn't work here. |
1477 | ifeq ($(ARCH), um) |
1478 | CHECKSTACK_ARCH := $(SUBARCH) |
1479 | else |
1480 | CHECKSTACK_ARCH := $(ARCH) |
1481 | endif |
1482 | checkstack: |
1483 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
1484 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1485 | |
1486 | kernelrelease: |
1487 | @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
1488 | |
1489 | kernelversion: |
1490 | @echo $(KERNELVERSION) |
1491 | |
1492 | image_name: |
1493 | @echo $(KBUILD_IMAGE) |
1494 | |
1495 | # Clear a bunch of variables before executing the submake |
1496 | tools/: FORCE |
1497 | $(Q)mkdir -p $(objtree)/tools |
1498 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ |
1499 | |
1500 | tools/%: FORCE |
1501 | $(Q)mkdir -p $(objtree)/tools |
1502 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $* |
1503 | |
1504 | # Single targets |
1505 | # --------------------------------------------------------------------------- |
1506 | # Single targets are compatible with: |
1507 | # - build with mixed source and output |
1508 | # - build with separate output dir 'make O=...' |
1509 | # - external modules |
1510 | # |
1511 | # target-dir => where to store outputfile |
1512 | # build-dir => directory in kernel source tree to use |
1513 | |
1514 | ifeq ($(KBUILD_EXTMOD),) |
1515 | build-dir = $(patsubst %/,%,$(dir $@)) |
1516 | target-dir = $(dir $@) |
1517 | else |
1518 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) |
1519 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) |
1520 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) |
1521 | endif |
1522 | |
1523 | %.s: %.c prepare scripts FORCE |
1524 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1525 | %.i: %.c prepare scripts FORCE |
1526 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1527 | %.o: %.c prepare scripts FORCE |
1528 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1529 | %.lst: %.c prepare scripts FORCE |
1530 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1531 | %.s: %.S prepare scripts FORCE |
1532 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1533 | %.o: %.S prepare scripts FORCE |
1534 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1535 | %.symtypes: %.c prepare scripts FORCE |
1536 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1537 | |
1538 | # Modules |
1539 | /: prepare scripts FORCE |
1540 | $(cmd_crmodverdir) |
1541 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
1542 | $(build)=$(build-dir) |
1543 | # Make sure the latest headers are built for Documentation |
1544 | Documentation/: headers_install |
1545 | %/: prepare scripts FORCE |
1546 | $(cmd_crmodverdir) |
1547 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
1548 | $(build)=$(build-dir) |
1549 | %.ko: prepare scripts FORCE |
1550 | $(cmd_crmodverdir) |
1551 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
1552 | $(build)=$(build-dir) $(@:.ko=.o) |
1553 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1554 | |
1555 | # FIXME Should go into a make.lib or something |
1556 | # =========================================================================== |
1557 | |
1558 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) |
1559 | cmd_rmdirs = rm -rf $(rm-dirs) |
1560 | |
1561 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) |
1562 | cmd_rmfiles = rm -f $(rm-files) |
1563 | |
1564 | # Run depmod only if we have System.map and depmod is executable |
1565 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
1566 | cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
1567 | $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" |
1568 | |
1569 | # Create temporary dir for module support files |
1570 | # clean it up only when building all modules |
1571 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ |
1572 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) |
1573 | |
1574 | # read all saved command lines |
1575 | |
1576 | targets := $(wildcard $(sort $(targets))) |
1577 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
1578 | |
1579 | ifneq ($(cmd_files),) |
1580 | $(cmd_files): ; # Do not try to update included dependency files |
1581 | include $(cmd_files) |
1582 | endif |
1583 | |
1584 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
1585 | # Usage: |
1586 | # $(Q)$(MAKE) $(clean)=dir |
1587 | clean := -f $(srctree)/scripts/Makefile.clean obj |
1588 | |
1589 | endif # skip-makefile |
1590 | |
1591 | PHONY += FORCE |
1592 | FORCE: |
1593 | |
1594 | # Declare the contents of the .PHONY variable as phony. We keep that |
1595 | # information in a variable so we can use it in if_changed and friends. |
1596 | .PHONY: $(PHONY) |
1597 |
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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