Root/
Source at commit 694c7fbe86b8a9c91392e505afcb9fcfc91deccc created 13 years 12 days ago. By Maarten ter Huurne, MIPS: JZ4740: Add cpufreq support | |
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1 | VERSION = 3 |
2 | PATCHLEVEL = 13 |
3 | SUBLEVEL = 0 |
4 | EXTRAVERSION = |
5 | NAME = One Giant Leap for Frogkind |
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 | # Avoid funny character set dependencies |
20 | unexport LC_ALL |
21 | LC_COLLATE=C |
22 | LC_NUMERIC=C |
23 | export LC_COLLATE LC_NUMERIC |
24 | |
25 | # Avoid interference with shell env settings |
26 | unexport GREP_OPTIONS |
27 | |
28 | # We are using a recursive build, so we need to do a little thinking |
29 | # to get the ordering right. |
30 | # |
31 | # Most importantly: sub-Makefiles should only ever modify files in |
32 | # their own directory. If in some directory we have a dependency on |
33 | # a file in another dir (which doesn't happen often, but it's often |
34 | # unavoidable when linking the built-in.o targets which finally |
35 | # turn into vmlinux), we will call a sub make in that other dir, and |
36 | # after that we are sure that everything which is in that other dir |
37 | # is now up to date. |
38 | # |
39 | # The only cases where we need to modify files which have global |
40 | # effects are thus separated out and done before the recursive |
41 | # descending is started. They are now explicitly listed as the |
42 | # prepare rule. |
43 | |
44 | # To put more focus on warnings, be less verbose as default |
45 | # Use 'make V=1' to see the full commands |
46 | |
47 | ifeq ("$(origin V)", "command line") |
48 | KBUILD_VERBOSE = $(V) |
49 | endif |
50 | ifndef KBUILD_VERBOSE |
51 | KBUILD_VERBOSE = 0 |
52 | endif |
53 | |
54 | # Call a source code checker (by default, "sparse") as part of the |
55 | # C compilation. |
56 | # |
57 | # Use 'make C=1' to enable checking of only re-compiled files. |
58 | # Use 'make C=2' to enable checking of *all* source files, regardless |
59 | # of whether they are re-compiled or not. |
60 | # |
61 | # See the file "Documentation/sparse.txt" for more details, including |
62 | # where to get the "sparse" utility. |
63 | |
64 | ifeq ("$(origin C)", "command line") |
65 | KBUILD_CHECKSRC = $(C) |
66 | endif |
67 | ifndef KBUILD_CHECKSRC |
68 | KBUILD_CHECKSRC = 0 |
69 | endif |
70 | |
71 | # Use make M=dir to specify directory of external module to build |
72 | # Old syntax make ... SUBDIRS=$PWD is still supported |
73 | # Setting the environment variable KBUILD_EXTMOD take precedence |
74 | ifdef SUBDIRS |
75 | KBUILD_EXTMOD ?= $(SUBDIRS) |
76 | endif |
77 | |
78 | ifeq ("$(origin M)", "command line") |
79 | KBUILD_EXTMOD := $(M) |
80 | endif |
81 | |
82 | # kbuild supports saving output files in a separate directory. |
83 | # To locate output files in a separate directory two syntaxes are supported. |
84 | # In both cases the working directory must be the root of the kernel src. |
85 | # 1) O= |
86 | # Use "make O=dir/to/store/output/files/" |
87 | # |
88 | # 2) Set KBUILD_OUTPUT |
89 | # Set the environment variable KBUILD_OUTPUT to point to the directory |
90 | # where the output files shall be placed. |
91 | # export KBUILD_OUTPUT=dir/to/store/output/files/ |
92 | # make |
93 | # |
94 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment |
95 | # variable. |
96 | |
97 | |
98 | # KBUILD_SRC is set on invocation of make in OBJ directory |
99 | # KBUILD_SRC is not intended to be used by the regular user (for now) |
100 | ifeq ($(KBUILD_SRC),) |
101 | |
102 | # OK, Make called in directory where kernel src resides |
103 | # Do we want to locate output files in a separate directory? |
104 | ifeq ("$(origin O)", "command line") |
105 | KBUILD_OUTPUT := $(O) |
106 | endif |
107 | |
108 | ifeq ("$(origin W)", "command line") |
109 | export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) |
110 | endif |
111 | |
112 | # That's our default target when none is given on the command line |
113 | PHONY := _all |
114 | _all: |
115 | |
116 | # Cancel implicit rules on top Makefile |
117 | $(CURDIR)/Makefile Makefile: ; |
118 | |
119 | ifneq ($(KBUILD_OUTPUT),) |
120 | # Invoke a second make in the output directory, passing relevant variables |
121 | # check that the output directory actually exists |
122 | saved-output := $(KBUILD_OUTPUT) |
123 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) |
124 | $(if $(KBUILD_OUTPUT),, \ |
125 | $(error output directory "$(saved-output)" does not exist)) |
126 | |
127 | PHONY += $(MAKECMDGOALS) sub-make |
128 | |
129 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
130 | @: |
131 | |
132 | sub-make: FORCE |
133 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
134 | KBUILD_SRC=$(CURDIR) \ |
135 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
136 | $(filter-out _all sub-make,$(MAKECMDGOALS)) |
137 | |
138 | # Leave processing to above invocation of make |
139 | skip-makefile := 1 |
140 | endif # ifneq ($(KBUILD_OUTPUT),) |
141 | endif # ifeq ($(KBUILD_SRC),) |
142 | |
143 | # We process the rest of the Makefile if this is the final invocation of make |
144 | ifeq ($(skip-makefile),) |
145 | |
146 | # If building an external module we do not care about the all: rule |
147 | # but instead _all depend on modules |
148 | PHONY += all |
149 | ifeq ($(KBUILD_EXTMOD),) |
150 | _all: all |
151 | else |
152 | _all: modules |
153 | endif |
154 | |
155 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) |
156 | objtree := $(CURDIR) |
157 | src := $(srctree) |
158 | obj := $(objtree) |
159 | |
160 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
161 | |
162 | export srctree objtree VPATH |
163 | |
164 | |
165 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
166 | # first, and if a usermode build is happening, the "ARCH=um" on the command |
167 | # line overrides the setting of ARCH below. If a native build is happening, |
168 | # then ARCH is assigned, getting whatever value it gets normally, and |
169 | # SUBARCH is subsequently ignored. |
170 | |
171 | SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ |
172 | -e s/sun4u/sparc64/ \ |
173 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
174 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
175 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
176 | -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) |
177 | |
178 | # Cross compiling and selecting different set of gcc/bin-utils |
179 | # --------------------------------------------------------------------------- |
180 | # |
181 | # When performing cross compilation for other architectures ARCH shall be set |
182 | # to the target architecture. (See arch/* for the possibilities). |
183 | # ARCH can be set during invocation of make: |
184 | # make ARCH=ia64 |
185 | # Another way is to have ARCH set in the environment. |
186 | # The default ARCH is the host where make is executed. |
187 | |
188 | # CROSS_COMPILE specify the prefix used for all executables used |
189 | # during compilation. Only gcc and related bin-utils executables |
190 | # are prefixed with $(CROSS_COMPILE). |
191 | # CROSS_COMPILE can be set on the command line |
192 | # make CROSS_COMPILE=ia64-linux- |
193 | # Alternatively CROSS_COMPILE can be set in the environment. |
194 | # A third alternative is to store a setting in .config so that plain |
195 | # "make" in the configured kernel build directory always uses that. |
196 | # Default value for CROSS_COMPILE is not to prefix executables |
197 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
198 | ARCH ?= $(SUBARCH) |
199 | CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
200 | |
201 | # Architecture as present in compile.h |
202 | UTS_MACHINE := $(ARCH) |
203 | SRCARCH := $(ARCH) |
204 | |
205 | # Additional ARCH settings for x86 |
206 | ifeq ($(ARCH),i386) |
207 | SRCARCH := x86 |
208 | endif |
209 | ifeq ($(ARCH),x86_64) |
210 | SRCARCH := x86 |
211 | endif |
212 | |
213 | # Additional ARCH settings for sparc |
214 | ifeq ($(ARCH),sparc32) |
215 | SRCARCH := sparc |
216 | endif |
217 | ifeq ($(ARCH),sparc64) |
218 | SRCARCH := sparc |
219 | endif |
220 | |
221 | # Additional ARCH settings for sh |
222 | ifeq ($(ARCH),sh64) |
223 | SRCARCH := sh |
224 | endif |
225 | |
226 | # Additional ARCH settings for tile |
227 | ifeq ($(ARCH),tilepro) |
228 | SRCARCH := tile |
229 | endif |
230 | ifeq ($(ARCH),tilegx) |
231 | SRCARCH := tile |
232 | endif |
233 | |
234 | # Where to locate arch specific headers |
235 | hdr-arch := $(SRCARCH) |
236 | |
237 | KCONFIG_CONFIG ?= .config |
238 | export KCONFIG_CONFIG |
239 | |
240 | # SHELL used by kbuild |
241 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ |
242 | else if [ -x /bin/bash ]; then echo /bin/bash; \ |
243 | else echo sh; fi ; fi) |
244 | |
245 | HOSTCC = gcc |
246 | HOSTCXX = g++ |
247 | HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer |
248 | HOSTCXXFLAGS = -O2 |
249 | |
250 | # Decide whether to build built-in, modular, or both. |
251 | # Normally, just do built-in. |
252 | |
253 | KBUILD_MODULES := |
254 | KBUILD_BUILTIN := 1 |
255 | |
256 | # If we have only "make modules", don't compile built-in objects. |
257 | # When we're building modules with modversions, we need to consider |
258 | # the built-in objects during the descend as well, in order to |
259 | # make sure the checksums are up to date before we record them. |
260 | |
261 | ifeq ($(MAKECMDGOALS),modules) |
262 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) |
263 | endif |
264 | |
265 | # If we have "make <whatever> modules", compile modules |
266 | # in addition to whatever we do anyway. |
267 | # Just "make" or "make all" shall build modules as well |
268 | |
269 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) |
270 | KBUILD_MODULES := 1 |
271 | endif |
272 | |
273 | ifeq ($(MAKECMDGOALS),) |
274 | KBUILD_MODULES := 1 |
275 | endif |
276 | |
277 | export KBUILD_MODULES KBUILD_BUILTIN |
278 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
279 | |
280 | # Beautify output |
281 | # --------------------------------------------------------------------------- |
282 | # |
283 | # Normally, we echo the whole command before executing it. By making |
284 | # that echo $($(quiet)$(cmd)), we now have the possibility to set |
285 | # $(quiet) to choose other forms of output instead, e.g. |
286 | # |
287 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ |
288 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< |
289 | # |
290 | # If $(quiet) is empty, the whole command will be printed. |
291 | # If it is set to "quiet_", only the short version will be printed. |
292 | # If it is set to "silent_", nothing will be printed at all, since |
293 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
294 | # |
295 | # A simple variant is to prefix commands with $(Q) - that's useful |
296 | # for commands that shall be hidden in non-verbose mode. |
297 | # |
298 | # $(Q)ln $@ :< |
299 | # |
300 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. |
301 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. |
302 | |
303 | ifeq ($(KBUILD_VERBOSE),1) |
304 | quiet = |
305 | Q = |
306 | else |
307 | quiet=quiet_ |
308 | Q = @ |
309 | endif |
310 | |
311 | # If the user is running make -s (silent mode), suppress echoing of |
312 | # commands |
313 | |
314 | ifneq ($(filter s% -s%,$(MAKEFLAGS)),) |
315 | quiet=silent_ |
316 | endif |
317 | |
318 | export quiet Q KBUILD_VERBOSE |
319 | |
320 | |
321 | # Look for make include files relative to root of kernel src |
322 | MAKEFLAGS += --include-dir=$(srctree) |
323 | |
324 | # We need some generic definitions (do not try to remake the file). |
325 | $(srctree)/scripts/Kbuild.include: ; |
326 | include $(srctree)/scripts/Kbuild.include |
327 | |
328 | # Make variables (CC, etc...) |
329 | |
330 | AS = $(CROSS_COMPILE)as |
331 | LD = $(CROSS_COMPILE)ld |
332 | CC = $(CROSS_COMPILE)gcc |
333 | CPP = $(CC) -E |
334 | AR = $(CROSS_COMPILE)ar |
335 | NM = $(CROSS_COMPILE)nm |
336 | STRIP = $(CROSS_COMPILE)strip |
337 | OBJCOPY = $(CROSS_COMPILE)objcopy |
338 | OBJDUMP = $(CROSS_COMPILE)objdump |
339 | AWK = awk |
340 | GENKSYMS = scripts/genksyms/genksyms |
341 | INSTALLKERNEL := installkernel |
342 | DEPMOD = /sbin/depmod |
343 | PERL = perl |
344 | CHECK = sparse |
345 | |
346 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
347 | -Wbitwise -Wno-return-void $(CF) |
348 | CFLAGS_MODULE = |
349 | AFLAGS_MODULE = |
350 | LDFLAGS_MODULE = |
351 | CFLAGS_KERNEL = |
352 | AFLAGS_KERNEL = |
353 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
354 | |
355 | |
356 | # Use USERINCLUDE when you must reference the UAPI directories only. |
357 | USERINCLUDE := \ |
358 | -I$(srctree)/arch/$(hdr-arch)/include/uapi \ |
359 | -Iarch/$(hdr-arch)/include/generated/uapi \ |
360 | -I$(srctree)/include/uapi \ |
361 | -Iinclude/generated/uapi \ |
362 | -include $(srctree)/include/linux/kconfig.h |
363 | |
364 | # Use LINUXINCLUDE when you must reference the include/ directory. |
365 | # Needed to be compatible with the O= option |
366 | LINUXINCLUDE := \ |
367 | -I$(srctree)/arch/$(hdr-arch)/include \ |
368 | -Iarch/$(hdr-arch)/include/generated \ |
369 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ |
370 | -Iinclude \ |
371 | $(USERINCLUDE) |
372 | |
373 | KBUILD_CPPFLAGS := -D__KERNEL__ |
374 | |
375 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
376 | -fno-strict-aliasing -fno-common \ |
377 | -Werror-implicit-function-declaration \ |
378 | -Wno-format-security \ |
379 | -fno-delete-null-pointer-checks |
380 | KBUILD_AFLAGS_KERNEL := |
381 | KBUILD_CFLAGS_KERNEL := |
382 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
383 | KBUILD_AFLAGS_MODULE := -DMODULE |
384 | KBUILD_CFLAGS_MODULE := -DMODULE |
385 | KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds |
386 | |
387 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
388 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) |
389 | KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) |
390 | |
391 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
392 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
393 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
394 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE |
395 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
396 | |
397 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
398 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
399 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
400 | export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
401 | export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
402 | export KBUILD_ARFLAGS |
403 | |
404 | # When compiling out-of-tree modules, put MODVERDIR in the module |
405 | # tree rather than in the kernel tree. The kernel tree might |
406 | # even be read-only. |
407 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
408 | |
409 | # Files to ignore in find ... statements |
410 | |
411 | RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \ |
412 | -o -name .pc -o -name .hg -o -name .git \) -prune -o |
413 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ |
414 | --exclude CVS --exclude .pc --exclude .hg --exclude .git |
415 | |
416 | # =========================================================================== |
417 | # Rules shared between *config targets and build targets |
418 | |
419 | # Basic helpers built in scripts/ |
420 | PHONY += scripts_basic |
421 | scripts_basic: |
422 | $(Q)$(MAKE) $(build)=scripts/basic |
423 | $(Q)rm -f .tmp_quiet_recordmcount |
424 | |
425 | # To avoid any implicit rule to kick in, define an empty command. |
426 | scripts/basic/%: scripts_basic ; |
427 | |
428 | PHONY += outputmakefile |
429 | # outputmakefile generates a Makefile in the output directory, if using a |
430 | # separate output directory. This allows convenient use of make in the |
431 | # output directory. |
432 | outputmakefile: |
433 | ifneq ($(KBUILD_SRC),) |
434 | $(Q)ln -fsn $(srctree) source |
435 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
436 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) |
437 | endif |
438 | |
439 | # Support for using generic headers in asm-generic |
440 | PHONY += asm-generic |
441 | asm-generic: |
442 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
443 | src=asm obj=arch/$(SRCARCH)/include/generated/asm |
444 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
445 | src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm |
446 | |
447 | # To make sure we do not include .config for any of the *config targets |
448 | # catch them early, and hand them over to scripts/kconfig/Makefile |
449 | # It is allowed to specify more targets when calling make, including |
450 | # mixing *config targets and build targets. |
451 | # For example 'make oldconfig all'. |
452 | # Detect when mixed targets is specified, and make a second invocation |
453 | # of make so .config is not included in this case either (for *config). |
454 | |
455 | version_h := include/generated/uapi/linux/version.h |
456 | |
457 | no-dot-config-targets := clean mrproper distclean \ |
458 | cscope gtags TAGS tags help %docs check% coccicheck \ |
459 | $(version_h) headers_% archheaders archscripts \ |
460 | kernelversion %src-pkg |
461 | |
462 | config-targets := 0 |
463 | mixed-targets := 0 |
464 | dot-config := 1 |
465 | |
466 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) |
467 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) |
468 | dot-config := 0 |
469 | endif |
470 | endif |
471 | |
472 | ifeq ($(KBUILD_EXTMOD),) |
473 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) |
474 | config-targets := 1 |
475 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) |
476 | mixed-targets := 1 |
477 | endif |
478 | endif |
479 | endif |
480 | |
481 | ifeq ($(mixed-targets),1) |
482 | # =========================================================================== |
483 | # We're called with mixed targets (*config and build targets). |
484 | # Handle them one by one. |
485 | |
486 | %:: FORCE |
487 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ |
488 | |
489 | else |
490 | ifeq ($(config-targets),1) |
491 | # =========================================================================== |
492 | # *config targets only - make sure prerequisites are updated, and descend |
493 | # in scripts/kconfig to make the *config target |
494 | |
495 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. |
496 | # KBUILD_DEFCONFIG may point out an alternative default configuration |
497 | # used for 'make defconfig' |
498 | include $(srctree)/arch/$(SRCARCH)/Makefile |
499 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
500 | |
501 | config: scripts_basic outputmakefile FORCE |
502 | $(Q)mkdir -p include/linux include/config |
503 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
504 | |
505 | %config: scripts_basic outputmakefile FORCE |
506 | $(Q)mkdir -p include/linux include/config |
507 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
508 | |
509 | else |
510 | # =========================================================================== |
511 | # Build targets only - this includes vmlinux, arch specific targets, clean |
512 | # targets and others. In general all targets except *config targets. |
513 | |
514 | ifeq ($(KBUILD_EXTMOD),) |
515 | # Additional helpers built in scripts/ |
516 | # Carefully list dependencies so we do not try to build scripts twice |
517 | # in parallel |
518 | PHONY += scripts |
519 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ |
520 | asm-generic |
521 | $(Q)$(MAKE) $(build)=$(@) |
522 | |
523 | # Objects we will link into vmlinux / subdirs we need to visit |
524 | init-y := init/ |
525 | drivers-y := drivers/ sound/ firmware/ |
526 | net-y := net/ |
527 | libs-y := lib/ |
528 | core-y := usr/ |
529 | endif # KBUILD_EXTMOD |
530 | |
531 | ifeq ($(dot-config),1) |
532 | # Read in config |
533 | -include include/config/auto.conf |
534 | |
535 | ifeq ($(KBUILD_EXTMOD),) |
536 | # Read in dependencies to all Kconfig* files, make sure to run |
537 | # oldconfig if changes are detected. |
538 | -include include/config/auto.conf.cmd |
539 | |
540 | # To avoid any implicit rule to kick in, define an empty command |
541 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
542 | |
543 | # If .config is newer than include/config/auto.conf, someone tinkered |
544 | # with it and forgot to run make oldconfig. |
545 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
546 | # we execute the config step to be sure to catch updated Kconfig files |
547 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
548 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
549 | else |
550 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
551 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
552 | PHONY += include/config/auto.conf |
553 | |
554 | include/config/auto.conf: |
555 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
556 | echo >&2; \ |
557 | echo >&2 " ERROR: Kernel configuration is invalid."; \ |
558 | echo >&2 " include/generated/autoconf.h or $@ are missing.";\ |
559 | echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ |
560 | echo >&2 ; \ |
561 | /bin/false) |
562 | |
563 | endif # KBUILD_EXTMOD |
564 | |
565 | else |
566 | # Dummy target needed, because used as prerequisite |
567 | include/config/auto.conf: ; |
568 | endif # $(dot-config) |
569 | |
570 | # The all: target is the default when no target is given on the |
571 | # command line. |
572 | # This allow a user to issue only 'make' to build a kernel including modules |
573 | # Defaults to vmlinux, but the arch makefile usually adds further targets |
574 | all: vmlinux |
575 | |
576 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
577 | KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) |
578 | else |
579 | KBUILD_CFLAGS += -O2 |
580 | endif |
581 | |
582 | include $(srctree)/arch/$(SRCARCH)/Makefile |
583 | |
584 | ifdef CONFIG_READABLE_ASM |
585 | # Disable optimizations that make assembler listings hard to read. |
586 | # reorder blocks reorders the control in the function |
587 | # ipa clone creates specialized cloned functions |
588 | # partial inlining inlines only parts of functions |
589 | KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ |
590 | $(call cc-option,-fno-ipa-cp-clone,) \ |
591 | $(call cc-option,-fno-partial-inlining) |
592 | endif |
593 | |
594 | ifneq ($(CONFIG_FRAME_WARN),0) |
595 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
596 | endif |
597 | |
598 | # Force gcc to behave correct even for buggy distributions |
599 | ifndef CONFIG_CC_STACKPROTECTOR |
600 | KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
601 | endif |
602 | |
603 | # This warning generated too much noise in a regular build. |
604 | # Use make W=1 to enable this warning (see scripts/Makefile.build) |
605 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) |
606 | |
607 | ifdef CONFIG_FRAME_POINTER |
608 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
609 | else |
610 | # Some targets (ARM with Thumb2, for example), can't be built with frame |
611 | # pointers. For those, we don't have FUNCTION_TRACER automatically |
612 | # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is |
613 | # incompatible with -fomit-frame-pointer with current GCC, so we don't use |
614 | # -fomit-frame-pointer with FUNCTION_TRACER. |
615 | ifndef CONFIG_FUNCTION_TRACER |
616 | KBUILD_CFLAGS += -fomit-frame-pointer |
617 | endif |
618 | endif |
619 | |
620 | ifdef CONFIG_DEBUG_INFO |
621 | KBUILD_CFLAGS += -g |
622 | KBUILD_AFLAGS += -gdwarf-2 |
623 | endif |
624 | |
625 | ifdef CONFIG_DEBUG_INFO_REDUCED |
626 | KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ |
627 | $(call cc-option,-fno-var-tracking) |
628 | endif |
629 | |
630 | ifdef CONFIG_FUNCTION_TRACER |
631 | ifdef CONFIG_HAVE_FENTRY |
632 | CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) |
633 | endif |
634 | KBUILD_CFLAGS += -pg $(CC_USING_FENTRY) |
635 | KBUILD_AFLAGS += $(CC_USING_FENTRY) |
636 | ifdef CONFIG_DYNAMIC_FTRACE |
637 | ifdef CONFIG_HAVE_C_RECORDMCOUNT |
638 | BUILD_C_RECORDMCOUNT := y |
639 | export BUILD_C_RECORDMCOUNT |
640 | endif |
641 | endif |
642 | endif |
643 | |
644 | # We trigger additional mismatches with less inlining |
645 | ifdef CONFIG_DEBUG_SECTION_MISMATCH |
646 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) |
647 | endif |
648 | |
649 | # arch Makefile may override CC so keep this after arch Makefile is included |
650 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
651 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
652 | |
653 | # warn about C99 declaration after statement |
654 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
655 | |
656 | # disable pointer signed / unsigned warnings in gcc 4.0 |
657 | KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
658 | |
659 | # disable invalid "can't wrap" optimizations for signed / pointers |
660 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
661 | |
662 | # conserve stack if available |
663 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) |
664 | |
665 | # disallow errors like 'EXPORT_GPL(foo);' with missing header |
666 | KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) |
667 | |
668 | # require functions to have arguments in prototypes, not empty 'int foo()' |
669 | KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) |
670 | |
671 | # use the deterministic mode of AR if available |
672 | KBUILD_ARFLAGS := $(call ar-option,D) |
673 | |
674 | # check for 'asm goto' |
675 | ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) |
676 | KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO |
677 | endif |
678 | |
679 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
680 | KBUILD_CPPFLAGS += $(KCPPFLAGS) |
681 | KBUILD_AFLAGS += $(KAFLAGS) |
682 | KBUILD_CFLAGS += $(KCFLAGS) |
683 | |
684 | # Use --build-id when available. |
685 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ |
686 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
687 | KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
688 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
689 | |
690 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
691 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
692 | endif |
693 | |
694 | # Default kernel image to build when no specific target is given. |
695 | # KBUILD_IMAGE may be overruled on the command line or |
696 | # set in the environment |
697 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over |
698 | # this default value |
699 | export KBUILD_IMAGE ?= vmlinux |
700 | |
701 | # |
702 | # INSTALL_PATH specifies where to place the updated kernel and system map |
703 | # images. Default is /boot, but you can set it to other values |
704 | export INSTALL_PATH ?= /boot |
705 | |
706 | # |
707 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory |
708 | # relocations required by build roots. This is not defined in the |
709 | # makefile but the argument can be passed to make if needed. |
710 | # |
711 | |
712 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
713 | export MODLIB |
714 | |
715 | # |
716 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
717 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then |
718 | # the default option --strip-debug will be used. Otherwise, |
719 | # INSTALL_MOD_STRIP value will be used as the options to the strip command. |
720 | |
721 | ifdef INSTALL_MOD_STRIP |
722 | ifeq ($(INSTALL_MOD_STRIP),1) |
723 | mod_strip_cmd = $(STRIP) --strip-debug |
724 | else |
725 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
726 | endif # INSTALL_MOD_STRIP=1 |
727 | else |
728 | mod_strip_cmd = true |
729 | endif # INSTALL_MOD_STRIP |
730 | export mod_strip_cmd |
731 | |
732 | # Select initial ramdisk compression format, default is gzip(1). |
733 | # This shall be used by the dracut(8) tool while creating an initramfs image. |
734 | # |
735 | INITRD_COMPRESS-y := gzip |
736 | INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 |
737 | INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma |
738 | INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz |
739 | INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo |
740 | INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 |
741 | # do not export INITRD_COMPRESS, since we didn't actually |
742 | # choose a sane default compression above. |
743 | # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) |
744 | |
745 | ifdef CONFIG_MODULE_SIG_ALL |
746 | MODSECKEY = ./signing_key.priv |
747 | MODPUBKEY = ./signing_key.x509 |
748 | export MODPUBKEY |
749 | mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY) |
750 | else |
751 | mod_sign_cmd = true |
752 | endif |
753 | export mod_sign_cmd |
754 | |
755 | |
756 | ifeq ($(KBUILD_EXTMOD),) |
757 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
758 | |
759 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ |
760 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ |
761 | $(net-y) $(net-m) $(libs-y) $(libs-m))) |
762 | |
763 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ |
764 | $(init-n) $(init-) \ |
765 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ |
766 | $(net-n) $(net-) $(libs-n) $(libs-)))) |
767 | |
768 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) |
769 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) |
770 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) |
771 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) |
772 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
773 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) |
774 | libs-y := $(libs-y1) $(libs-y2) |
775 | |
776 | # Externally visible symbols (used by link-vmlinux.sh) |
777 | export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) |
778 | export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) |
779 | export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds |
780 | export LDFLAGS_vmlinux |
781 | # used by scripts/pacmage/Makefile |
782 | export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) |
783 | |
784 | vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) |
785 | |
786 | # Final link of vmlinux |
787 | cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) |
788 | quiet_cmd_link-vmlinux = LINK $@ |
789 | |
790 | # Include targets which we want to |
791 | # execute if the rest of the kernel build went well. |
792 | vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE |
793 | ifdef CONFIG_HEADERS_CHECK |
794 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
795 | endif |
796 | ifdef CONFIG_SAMPLES |
797 | $(Q)$(MAKE) $(build)=samples |
798 | endif |
799 | ifdef CONFIG_BUILD_DOCSRC |
800 | $(Q)$(MAKE) $(build)=Documentation |
801 | endif |
802 | +$(call if_changed,link-vmlinux) |
803 | |
804 | # The actual objects are generated when descending, |
805 | # make sure no implicit rule kicks in |
806 | $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
807 | |
808 | # Handle descending into subdirectories listed in $(vmlinux-dirs) |
809 | # Preset locale variables to speed up the build process. Limit locale |
810 | # tweaks to this spot to avoid wrong language settings when running |
811 | # make menuconfig etc. |
812 | # Error messages still appears in the original language |
813 | |
814 | PHONY += $(vmlinux-dirs) |
815 | $(vmlinux-dirs): prepare scripts |
816 | $(Q)$(MAKE) $(build)=$@ |
817 | |
818 | define filechk_kernel.release |
819 | echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
820 | endef |
821 | |
822 | # Store (new) KERNELRELEASE string in include/config/kernel.release |
823 | include/config/kernel.release: include/config/auto.conf FORCE |
824 | $(call filechk,kernel.release) |
825 | |
826 | |
827 | # Things we need to do before we recursively start building the kernel |
828 | # or the modules are listed in "prepare". |
829 | # A multi level approach is used. prepareN is processed before prepareN-1. |
830 | # archprepare is used in arch Makefiles and when processed asm symlink, |
831 | # version.h and scripts_basic is processed / created. |
832 | |
833 | # Listed in dependency order |
834 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
835 | |
836 | # prepare3 is used to check if we are building in a separate output directory, |
837 | # and if so do: |
838 | # 1) Check that make has not been executed in the kernel src $(srctree) |
839 | prepare3: include/config/kernel.release |
840 | ifneq ($(KBUILD_SRC),) |
841 | @$(kecho) ' Using $(srctree) as source for kernel' |
842 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
843 | echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ |
844 | echo >&2 " in the '$(srctree)' directory.";\ |
845 | /bin/false; \ |
846 | fi; |
847 | endif |
848 | |
849 | # prepare2 creates a makefile if using a separate output directory |
850 | prepare2: prepare3 outputmakefile asm-generic |
851 | |
852 | prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ |
853 | include/config/auto.conf |
854 | $(cmd_crmodverdir) |
855 | |
856 | archprepare: archheaders archscripts prepare1 scripts_basic |
857 | |
858 | prepare0: archprepare FORCE |
859 | $(Q)$(MAKE) $(build)=. |
860 | |
861 | # All the preparing.. |
862 | prepare: prepare0 |
863 | |
864 | # Generate some files |
865 | # --------------------------------------------------------------------------- |
866 | |
867 | # KERNELRELEASE can change from a few different places, meaning version.h |
868 | # needs to be updated, so this check is forced on all builds |
869 | |
870 | uts_len := 64 |
871 | define filechk_utsrelease.h |
872 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ |
873 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ |
874 | exit 1; \ |
875 | fi; \ |
876 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) |
877 | endef |
878 | |
879 | define filechk_version.h |
880 | (echo \#define LINUX_VERSION_CODE $(shell \ |
881 | expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ |
882 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
883 | endef |
884 | |
885 | $(version_h): $(srctree)/Makefile FORCE |
886 | $(call filechk,version.h) |
887 | |
888 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
889 | $(call filechk,utsrelease.h) |
890 | |
891 | PHONY += headerdep |
892 | headerdep: |
893 | $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ |
894 | $(srctree)/scripts/headerdep.pl -I$(srctree)/include |
895 | |
896 | # --------------------------------------------------------------------------- |
897 | |
898 | PHONY += depend dep |
899 | depend dep: |
900 | @echo '*** Warning: make $@ is unnecessary now.' |
901 | |
902 | # --------------------------------------------------------------------------- |
903 | # Firmware install |
904 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware |
905 | export INSTALL_FW_PATH |
906 | |
907 | PHONY += firmware_install |
908 | firmware_install: FORCE |
909 | @mkdir -p $(objtree)/firmware |
910 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install |
911 | |
912 | # --------------------------------------------------------------------------- |
913 | # Kernel headers |
914 | |
915 | #Default location for installed headers |
916 | export INSTALL_HDR_PATH = $(objtree)/usr |
917 | |
918 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
919 | |
920 | # If we do an all arch process set dst to asm-$(hdr-arch) |
921 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) |
922 | |
923 | PHONY += archheaders |
924 | archheaders: |
925 | |
926 | PHONY += archscripts |
927 | archscripts: |
928 | |
929 | PHONY += __headers |
930 | __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE |
931 | $(Q)$(MAKE) $(build)=scripts build_unifdef |
932 | |
933 | PHONY += headers_install_all |
934 | headers_install_all: |
935 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install |
936 | |
937 | PHONY += headers_install |
938 | headers_install: __headers |
939 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ |
940 | $(error Headers not exportable for the $(SRCARCH) architecture)) |
941 | $(Q)$(MAKE) $(hdr-inst)=include/uapi |
942 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) |
943 | |
944 | PHONY += headers_check_all |
945 | headers_check_all: headers_install_all |
946 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
947 | |
948 | PHONY += headers_check |
949 | headers_check: headers_install |
950 | $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 |
951 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 |
952 | |
953 | # --------------------------------------------------------------------------- |
954 | # Modules |
955 | |
956 | ifdef CONFIG_MODULES |
957 | |
958 | # By default, build modules as well |
959 | |
960 | all: modules |
961 | |
962 | # Build modules |
963 | # |
964 | # A module can be listed more than once in obj-m resulting in |
965 | # duplicate lines in modules.order files. Those are removed |
966 | # using awk while concatenating to the final file. |
967 | |
968 | PHONY += modules |
969 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
970 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
971 | @$(kecho) ' Building modules, stage 2.'; |
972 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
973 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
974 | |
975 | modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
976 | $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin |
977 | |
978 | %/modules.builtin: include/config/auto.conf |
979 | $(Q)$(MAKE) $(modbuiltin)=$* |
980 | |
981 | |
982 | # Target to prepare building external modules |
983 | PHONY += modules_prepare |
984 | modules_prepare: prepare scripts |
985 | |
986 | # Target to install modules |
987 | PHONY += modules_install |
988 | modules_install: _modinst_ _modinst_post |
989 | |
990 | PHONY += _modinst_ |
991 | _modinst_: |
992 | @rm -rf $(MODLIB)/kernel |
993 | @rm -f $(MODLIB)/source |
994 | @mkdir -p $(MODLIB)/kernel |
995 | @ln -s $(srctree) $(MODLIB)/source |
996 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
997 | rm -f $(MODLIB)/build ; \ |
998 | ln -s $(objtree) $(MODLIB)/build ; \ |
999 | fi |
1000 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
1001 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
1002 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1003 | |
1004 | # This depmod is only for convenience to give the initial |
1005 | # boot a modules.dep even before / is mounted read-write. However the |
1006 | # boot script depmod is the master version. |
1007 | PHONY += _modinst_post |
1008 | _modinst_post: _modinst_ |
1009 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
1010 | $(call cmd,depmod) |
1011 | |
1012 | ifeq ($(CONFIG_MODULE_SIG), y) |
1013 | PHONY += modules_sign |
1014 | modules_sign: |
1015 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign |
1016 | endif |
1017 | |
1018 | else # CONFIG_MODULES |
1019 | |
1020 | # Modules not configured |
1021 | # --------------------------------------------------------------------------- |
1022 | |
1023 | modules modules_install: FORCE |
1024 | @echo >&2 |
1025 | @echo >&2 "The present kernel configuration has modules disabled." |
1026 | @echo >&2 "Type 'make config' and enable loadable module support." |
1027 | @echo >&2 "Then build a kernel with module support enabled." |
1028 | @echo >&2 |
1029 | @exit 1 |
1030 | |
1031 | endif # CONFIG_MODULES |
1032 | |
1033 | ### |
1034 | # Cleaning is done on three levels. |
1035 | # make clean Delete most generated files |
1036 | # Leave enough to build external modules |
1037 | # make mrproper Delete the current configuration, and all generated files |
1038 | # make distclean Remove editor backup files, patch leftover files and the like |
1039 | |
1040 | # Directories & files removed with 'make clean' |
1041 | CLEAN_DIRS += $(MODVERDIR) |
1042 | |
1043 | # Directories & files removed with 'make mrproper' |
1044 | MRPROPER_DIRS += include/config usr/include include/generated \ |
1045 | arch/*/include/generated |
1046 | MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \ |
1047 | Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ |
1048 | signing_key.priv signing_key.x509 x509.genkey \ |
1049 | extra_certificates signing_key.x509.keyid \ |
1050 | signing_key.x509.signer |
1051 | |
1052 | # clean - Delete most, but leave enough to build external modules |
1053 | # |
1054 | clean: rm-dirs := $(CLEAN_DIRS) |
1055 | clean: rm-files := $(CLEAN_FILES) |
1056 | clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) |
1057 | |
1058 | PHONY += $(clean-dirs) clean archclean vmlinuxclean |
1059 | $(clean-dirs): |
1060 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
1061 | |
1062 | vmlinuxclean: |
1063 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean |
1064 | |
1065 | clean: archclean vmlinuxclean |
1066 | |
1067 | # mrproper - Delete all generated files, including .config |
1068 | # |
1069 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) |
1070 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
1071 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) |
1072 | |
1073 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1074 | $(mrproper-dirs): |
1075 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) |
1076 | |
1077 | mrproper: clean archmrproper $(mrproper-dirs) |
1078 | $(call cmd,rmdirs) |
1079 | $(call cmd,rmfiles) |
1080 | |
1081 | # distclean |
1082 | # |
1083 | PHONY += distclean |
1084 | |
1085 | distclean: mrproper |
1086 | @find $(srctree) $(RCS_FIND_IGNORE) \ |
1087 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1088 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
1089 | -o -name '.*.rej' \ |
1090 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
1091 | -type f -print | xargs rm -f |
1092 | |
1093 | |
1094 | # Packaging of the kernel to various formats |
1095 | # --------------------------------------------------------------------------- |
1096 | # rpm target kept for backward compatibility |
1097 | package-dir := $(srctree)/scripts/package |
1098 | |
1099 | %src-pkg: FORCE |
1100 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1101 | %pkg: include/config/kernel.release FORCE |
1102 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1103 | rpm: include/config/kernel.release FORCE |
1104 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1105 | |
1106 | |
1107 | # Brief documentation of the typical targets used |
1108 | # --------------------------------------------------------------------------- |
1109 | |
1110 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
1111 | boards := $(notdir $(boards)) |
1112 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
1113 | board-dirs := $(sort $(notdir $(board-dirs:/=))) |
1114 | |
1115 | help: |
1116 | @echo 'Cleaning targets:' |
1117 | @echo ' clean - Remove most generated files but keep the config and' |
1118 | @echo ' enough build support to build external modules' |
1119 | @echo ' mrproper - Remove all generated files + config + various backup files' |
1120 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1121 | @echo '' |
1122 | @echo 'Configuration targets:' |
1123 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help |
1124 | @echo '' |
1125 | @echo 'Other generic targets:' |
1126 | @echo ' all - Build all targets marked with [*]' |
1127 | @echo '* vmlinux - Build the bare kernel' |
1128 | @echo '* modules - Build all modules' |
1129 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
1130 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
1131 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' |
1132 | @echo ' dir/ - Build all files in dir and below' |
1133 | @echo ' dir/file.[oisS] - Build specified target only' |
1134 | @echo ' dir/file.lst - Build specified mixed source/assembly target only' |
1135 | @echo ' (requires a recent binutils and recent build (System.map))' |
1136 | @echo ' dir/file.ko - Build module including final link' |
1137 | @echo ' modules_prepare - Set up for building external modules' |
1138 | @echo ' tags/TAGS - Generate tags file for editors' |
1139 | @echo ' cscope - Generate cscope index' |
1140 | @echo ' gtags - Generate GNU GLOBAL index' |
1141 | @echo ' kernelrelease - Output the release version string' |
1142 | @echo ' kernelversion - Output the version stored in Makefile' |
1143 | @echo ' image_name - Output the image name' |
1144 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
1145 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
1146 | echo '' |
1147 | @echo 'Static analysers' |
1148 | @echo ' checkstack - Generate a list of stack hogs' |
1149 | @echo ' namespacecheck - Name space analysis on compiled kernel' |
1150 | @echo ' versioncheck - Sanity check on version.h usage' |
1151 | @echo ' includecheck - Check for duplicate included header files' |
1152 | @echo ' export_report - List the usages of all exported symbols' |
1153 | @echo ' headers_check - Sanity check on exported headers' |
1154 | @echo ' headerdep - Detect inclusion cycles in headers' |
1155 | @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help |
1156 | @echo '' |
1157 | @echo 'Kernel packaging:' |
1158 | @$(MAKE) $(build)=$(package-dir) help |
1159 | @echo '' |
1160 | @echo 'Documentation targets:' |
1161 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp |
1162 | @echo '' |
1163 | @echo 'Architecture specific targets ($(SRCARCH)):' |
1164 | @$(if $(archhelp),$(archhelp),\ |
1165 | echo ' No architecture specific help defined for $(SRCARCH)') |
1166 | @echo '' |
1167 | @$(if $(boards), \ |
1168 | $(foreach b, $(boards), \ |
1169 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ |
1170 | echo '') |
1171 | @$(if $(board-dirs), \ |
1172 | $(foreach b, $(board-dirs), \ |
1173 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ |
1174 | printf " %-16s - Show all of the above\\n" help-boards; \ |
1175 | echo '') |
1176 | |
1177 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' |
1178 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1179 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
1180 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
1181 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
1182 | @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
1183 | @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' |
1184 | @echo ' 1: warnings which may be relevant and do not occur too often' |
1185 | @echo ' 2: warnings which occur quite often but may still be relevant' |
1186 | @echo ' 3: more obscure warnings, can most likely be ignored' |
1187 | @echo ' Multiple levels can be combined with W=12 or W=123' |
1188 | @echo '' |
1189 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' |
1190 | @echo 'For further info see the ./README file' |
1191 | |
1192 | |
1193 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
1194 | |
1195 | help-boards: $(help-board-dirs) |
1196 | |
1197 | boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) |
1198 | |
1199 | $(help-board-dirs): help-%: |
1200 | @echo 'Architecture specific targets ($(SRCARCH) $*):' |
1201 | @$(if $(boards-per-dir), \ |
1202 | $(foreach b, $(boards-per-dir), \ |
1203 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ |
1204 | echo '') |
1205 | |
1206 | |
1207 | # Documentation targets |
1208 | # --------------------------------------------------------------------------- |
1209 | %docs: scripts_basic FORCE |
1210 | $(Q)$(MAKE) $(build)=scripts build_docproc |
1211 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
1212 | |
1213 | else # KBUILD_EXTMOD |
1214 | |
1215 | ### |
1216 | # External module support. |
1217 | # When building external modules the kernel used as basis is considered |
1218 | # read-only, and no consistency checks are made and the make |
1219 | # system is not used on the basis kernel. If updates are required |
1220 | # in the basis kernel ordinary make commands (without M=...) must |
1221 | # be used. |
1222 | # |
1223 | # The following are the only valid targets when building external |
1224 | # modules. |
1225 | # make M=dir clean Delete all automatically generated files |
1226 | # make M=dir modules Make all modules in specified dir |
1227 | # make M=dir Same as 'make M=dir modules' |
1228 | # make M=dir modules_install |
1229 | # Install the modules built in the module directory |
1230 | # Assumes install directory is already created |
1231 | |
1232 | # We are always building modules |
1233 | KBUILD_MODULES := 1 |
1234 | PHONY += crmodverdir |
1235 | crmodverdir: |
1236 | $(cmd_crmodverdir) |
1237 | |
1238 | PHONY += $(objtree)/Module.symvers |
1239 | $(objtree)/Module.symvers: |
1240 | @test -e $(objtree)/Module.symvers || ( \ |
1241 | echo; \ |
1242 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ |
1243 | echo " is missing; modules will have no dependencies and modversions."; \ |
1244 | echo ) |
1245 | |
1246 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
1247 | PHONY += $(module-dirs) modules |
1248 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1249 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) |
1250 | |
1251 | modules: $(module-dirs) |
1252 | @$(kecho) ' Building modules, stage 2.'; |
1253 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1254 | |
1255 | PHONY += modules_install |
1256 | modules_install: _emodinst_ _emodinst_post |
1257 | |
1258 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1259 | PHONY += _emodinst_ |
1260 | _emodinst_: |
1261 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
1262 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1263 | |
1264 | PHONY += _emodinst_post |
1265 | _emodinst_post: _emodinst_ |
1266 | $(call cmd,depmod) |
1267 | |
1268 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1269 | |
1270 | PHONY += $(clean-dirs) clean |
1271 | $(clean-dirs): |
1272 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
1273 | |
1274 | clean: rm-dirs := $(MODVERDIR) |
1275 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
1276 | |
1277 | help: |
1278 | @echo ' Building external modules.' |
1279 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' |
1280 | @echo '' |
1281 | @echo ' modules - default target, build the module(s)' |
1282 | @echo ' modules_install - install the module' |
1283 | @echo ' clean - remove generated files in module directory only' |
1284 | @echo '' |
1285 | |
1286 | # Dummies... |
1287 | PHONY += prepare scripts |
1288 | prepare: ; |
1289 | scripts: ; |
1290 | endif # KBUILD_EXTMOD |
1291 | |
1292 | clean: $(clean-dirs) |
1293 | $(call cmd,rmdirs) |
1294 | $(call cmd,rmfiles) |
1295 | @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
1296 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
1297 | -o -name '*.ko.*' \ |
1298 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
1299 | -o -name '*.symtypes' -o -name 'modules.order' \ |
1300 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ |
1301 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
1302 | |
1303 | # Generate tags for editors |
1304 | # --------------------------------------------------------------------------- |
1305 | quiet_cmd_tags = GEN $@ |
1306 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ |
1307 | |
1308 | tags TAGS cscope gtags: FORCE |
1309 | $(call cmd,tags) |
1310 | |
1311 | # Scripts to check various things for consistency |
1312 | # --------------------------------------------------------------------------- |
1313 | |
1314 | PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
1315 | |
1316 | includecheck: |
1317 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1318 | -name '*.[hcS]' -type f -print | sort \ |
1319 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1320 | |
1321 | versioncheck: |
1322 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1323 | -name '*.[hcS]' -type f -print | sort \ |
1324 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1325 | |
1326 | coccicheck: |
1327 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ |
1328 | |
1329 | namespacecheck: |
1330 | $(PERL) $(srctree)/scripts/namespace.pl |
1331 | |
1332 | export_report: |
1333 | $(PERL) $(srctree)/scripts/export_report.pl |
1334 | |
1335 | endif #ifeq ($(config-targets),1) |
1336 | endif #ifeq ($(mixed-targets),1) |
1337 | |
1338 | PHONY += checkstack kernelrelease kernelversion image_name |
1339 | |
1340 | # UML needs a little special treatment here. It wants to use the host |
1341 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone |
1342 | # else wants $(ARCH), including people doing cross-builds, which means |
1343 | # that $(SUBARCH) doesn't work here. |
1344 | ifeq ($(ARCH), um) |
1345 | CHECKSTACK_ARCH := $(SUBARCH) |
1346 | else |
1347 | CHECKSTACK_ARCH := $(ARCH) |
1348 | endif |
1349 | checkstack: |
1350 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
1351 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1352 | |
1353 | kernelrelease: |
1354 | @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
1355 | |
1356 | kernelversion: |
1357 | @echo $(KERNELVERSION) |
1358 | |
1359 | image_name: |
1360 | @echo $(KBUILD_IMAGE) |
1361 | |
1362 | # Clear a bunch of variables before executing the submake |
1363 | tools/: FORCE |
1364 | $(Q)mkdir -p $(objtree)/tools |
1365 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ |
1366 | |
1367 | tools/%: FORCE |
1368 | $(Q)mkdir -p $(objtree)/tools |
1369 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $* |
1370 | |
1371 | # Single targets |
1372 | # --------------------------------------------------------------------------- |
1373 | # Single targets are compatible with: |
1374 | # - build with mixed source and output |
1375 | # - build with separate output dir 'make O=...' |
1376 | # - external modules |
1377 | # |
1378 | # target-dir => where to store outputfile |
1379 | # build-dir => directory in kernel source tree to use |
1380 | |
1381 | ifeq ($(KBUILD_EXTMOD),) |
1382 | build-dir = $(patsubst %/,%,$(dir $@)) |
1383 | target-dir = $(dir $@) |
1384 | else |
1385 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) |
1386 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) |
1387 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) |
1388 | endif |
1389 | |
1390 | %.s: %.c prepare scripts FORCE |
1391 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1392 | %.i: %.c prepare scripts FORCE |
1393 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1394 | %.o: %.c prepare scripts FORCE |
1395 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1396 | %.lst: %.c prepare scripts FORCE |
1397 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1398 | %.s: %.S prepare scripts FORCE |
1399 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1400 | %.o: %.S prepare scripts FORCE |
1401 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1402 | %.symtypes: %.c prepare scripts FORCE |
1403 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1404 | |
1405 | # Modules |
1406 | /: prepare scripts FORCE |
1407 | $(cmd_crmodverdir) |
1408 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
1409 | $(build)=$(build-dir) |
1410 | %/: prepare scripts FORCE |
1411 | $(cmd_crmodverdir) |
1412 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
1413 | $(build)=$(build-dir) |
1414 | %.ko: prepare scripts FORCE |
1415 | $(cmd_crmodverdir) |
1416 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
1417 | $(build)=$(build-dir) $(@:.ko=.o) |
1418 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1419 | |
1420 | # FIXME Should go into a make.lib or something |
1421 | # =========================================================================== |
1422 | |
1423 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) |
1424 | cmd_rmdirs = rm -rf $(rm-dirs) |
1425 | |
1426 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) |
1427 | cmd_rmfiles = rm -f $(rm-files) |
1428 | |
1429 | # Run depmod only if we have System.map and depmod is executable |
1430 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
1431 | cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
1432 | $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" |
1433 | |
1434 | # Create temporary dir for module support files |
1435 | # clean it up only when building all modules |
1436 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ |
1437 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) |
1438 | |
1439 | # read all saved command lines |
1440 | |
1441 | targets := $(wildcard $(sort $(targets))) |
1442 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
1443 | |
1444 | ifneq ($(cmd_files),) |
1445 | $(cmd_files): ; # Do not try to update included dependency files |
1446 | include $(cmd_files) |
1447 | endif |
1448 | |
1449 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
1450 | # Usage: |
1451 | # $(Q)$(MAKE) $(clean)=dir |
1452 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj |
1453 | |
1454 | endif # skip-makefile |
1455 | |
1456 | PHONY += FORCE |
1457 | FORCE: |
1458 | |
1459 | # Declare the contents of the .PHONY variable as phony. We keep that |
1460 | # information in a variable so we can use it in if_changed and friends. |
1461 | .PHONY: $(PHONY) |
1462 |
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Tags:
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