Contents of /tags/mkinitrd-6_1_4/busybox/Makefile
Parent Directory | Revision Log
Revision 532 -
(show annotations)
(download)
Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
Original Path: trunk/mkinitrd-magellan/busybox/Makefile
File size: 41165 byte(s)
Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
Original Path: trunk/mkinitrd-magellan/busybox/Makefile
File size: 41165 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | VERSION = 1 |
2 | PATCHLEVEL = 4 |
3 | SUBLEVEL = 2 |
4 | EXTRAVERSION = |
5 | NAME = Unnamed |
6 | |
7 | # *DOCUMENTATION* |
8 | # To see a list of typical targets execute "make help" |
9 | # More info can be located in ./README |
10 | # Comments in this file are targeted only to the developer, do not |
11 | # expect to learn how to build the kernel reading this file. |
12 | |
13 | # Do not print "Entering directory ..." |
14 | MAKEFLAGS += --no-print-directory |
15 | |
16 | # We are using a recursive build, so we need to do a little thinking |
17 | # to get the ordering right. |
18 | # |
19 | # Most importantly: sub-Makefiles should only ever modify files in |
20 | # their own directory. If in some directory we have a dependency on |
21 | # a file in another dir (which doesn't happen often, but it's often |
22 | # unavoidable when linking the built-in.o targets which finally |
23 | # turn into busybox), we will call a sub make in that other dir, and |
24 | # after that we are sure that everything which is in that other dir |
25 | # is now up to date. |
26 | # |
27 | # The only cases where we need to modify files which have global |
28 | # effects are thus separated out and done before the recursive |
29 | # descending is started. They are now explicitly listed as the |
30 | # prepare rule. |
31 | |
32 | # To put more focus on warnings, be less verbose as default |
33 | # Use 'make V=1' to see the full commands |
34 | |
35 | ifdef V |
36 | ifeq ("$(origin V)", "command line") |
37 | KBUILD_VERBOSE = $(V) |
38 | endif |
39 | endif |
40 | ifndef KBUILD_VERBOSE |
41 | KBUILD_VERBOSE = 0 |
42 | endif |
43 | |
44 | # Call sparse as part of compilation of C files |
45 | # Use 'make C=1' to enable sparse checking |
46 | |
47 | ifdef C |
48 | ifeq ("$(origin C)", "command line") |
49 | KBUILD_CHECKSRC = $(C) |
50 | endif |
51 | endif |
52 | ifndef KBUILD_CHECKSRC |
53 | KBUILD_CHECKSRC = 0 |
54 | endif |
55 | |
56 | # Use make M=dir to specify directory of external module to build |
57 | # Old syntax make ... SUBDIRS=$PWD is still supported |
58 | # Setting the environment variable KBUILD_EXTMOD take precedence |
59 | ifdef SUBDIRS |
60 | KBUILD_EXTMOD ?= $(SUBDIRS) |
61 | endif |
62 | ifdef M |
63 | ifeq ("$(origin M)", "command line") |
64 | KBUILD_EXTMOD := $(M) |
65 | endif |
66 | endif |
67 | |
68 | |
69 | # kbuild supports saving output files in a separate directory. |
70 | # To locate output files in a separate directory two syntaxes are supported. |
71 | # In both cases the working directory must be the root of the kernel src. |
72 | # 1) O= |
73 | # Use "make O=dir/to/store/output/files/" |
74 | # |
75 | # 2) Set KBUILD_OUTPUT |
76 | # Set the environment variable KBUILD_OUTPUT to point to the directory |
77 | # where the output files shall be placed. |
78 | # export KBUILD_OUTPUT=dir/to/store/output/files/ |
79 | # make |
80 | # |
81 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment |
82 | # variable. |
83 | |
84 | |
85 | # KBUILD_SRC is set on invocation of make in OBJ directory |
86 | # KBUILD_SRC is not intended to be used by the regular user (for now) |
87 | ifeq ($(KBUILD_SRC),) |
88 | |
89 | # OK, Make called in directory where kernel src resides |
90 | # Do we want to locate output files in a separate directory? |
91 | ifdef O |
92 | ifeq ("$(origin O)", "command line") |
93 | KBUILD_OUTPUT := $(O) |
94 | endif |
95 | endif |
96 | |
97 | # That's our default target when none is given on the command line |
98 | PHONY := _all |
99 | _all: |
100 | |
101 | ifneq ($(KBUILD_OUTPUT),) |
102 | # Invoke a second make in the output directory, passing relevant variables |
103 | # check that the output directory actually exists |
104 | saved-output := $(KBUILD_OUTPUT) |
105 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) |
106 | $(if $(KBUILD_OUTPUT),, \ |
107 | $(error output directory "$(saved-output)" does not exist)) |
108 | |
109 | PHONY += $(MAKECMDGOALS) |
110 | |
111 | $(filter-out _all,$(MAKECMDGOALS)) _all: |
112 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
113 | KBUILD_SRC=$(CURDIR) \ |
114 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@ |
115 | |
116 | # Leave processing to above invocation of make |
117 | skip-makefile := 1 |
118 | endif # ifneq ($(KBUILD_OUTPUT),) |
119 | endif # ifeq ($(KBUILD_SRC),) |
120 | |
121 | # We process the rest of the Makefile if this is the final invocation of make |
122 | ifeq ($(skip-makefile),) |
123 | |
124 | # If building an external module we do not care about the all: rule |
125 | # but instead _all depend on modules |
126 | PHONY += all |
127 | ifeq ($(KBUILD_EXTMOD),) |
128 | _all: all |
129 | else |
130 | _all: modules |
131 | endif |
132 | |
133 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) |
134 | TOPDIR := $(srctree) |
135 | # FIXME - TOPDIR is obsolete, use srctree/objtree |
136 | objtree := $(CURDIR) |
137 | src := $(srctree) |
138 | obj := $(objtree) |
139 | |
140 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
141 | |
142 | export srctree objtree VPATH TOPDIR |
143 | |
144 | |
145 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
146 | # first, and if a usermode build is happening, the "ARCH=um" on the command |
147 | # line overrides the setting of ARCH below. If a native build is happening, |
148 | # then ARCH is assigned, getting whatever value it gets normally, and |
149 | # SUBARCH is subsequently ignored. |
150 | |
151 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ |
152 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
153 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
154 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ ) |
155 | |
156 | # Cross compiling and selecting different set of gcc/bin-utils |
157 | # --------------------------------------------------------------------------- |
158 | # |
159 | # When performing cross compilation for other architectures ARCH shall be set |
160 | # to the target architecture. (See arch/* for the possibilities). |
161 | # ARCH can be set during invocation of make: |
162 | # make ARCH=ia64 |
163 | # Another way is to have ARCH set in the environment. |
164 | # The default ARCH is the host where make is executed. |
165 | |
166 | # CROSS_COMPILE specify the prefix used for all executables used |
167 | # during compilation. Only gcc and related bin-utils executables |
168 | # are prefixed with $(CROSS_COMPILE). |
169 | # CROSS_COMPILE can be set on the command line |
170 | # make CROSS_COMPILE=ia64-linux- |
171 | # Alternatively CROSS_COMPILE can be set in the environment. |
172 | # Default value for CROSS_COMPILE is not to prefix executables |
173 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
174 | |
175 | ARCH ?= $(SUBARCH) |
176 | CROSS_COMPILE ?= |
177 | |
178 | # Architecture as present in compile.h |
179 | UTS_MACHINE := $(ARCH) |
180 | |
181 | # SHELL used by kbuild |
182 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ |
183 | else if [ -x /bin/bash ]; then echo /bin/bash; \ |
184 | else echo sh; fi ; fi) |
185 | |
186 | HOSTCC = gcc |
187 | HOSTCXX = g++ |
188 | HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer |
189 | HOSTCXXFLAGS = -O2 |
190 | |
191 | # Decide whether to build built-in, modular, or both. |
192 | # Normally, just do built-in. |
193 | |
194 | KBUILD_MODULES := |
195 | KBUILD_BUILTIN := 1 |
196 | |
197 | # If we have only "make modules", don't compile built-in objects. |
198 | # When we're building modules with modversions, we need to consider |
199 | # the built-in objects during the descend as well, in order to |
200 | # make sure the checksums are uptodate before we record them. |
201 | |
202 | ifeq ($(MAKECMDGOALS),modules) |
203 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) |
204 | endif |
205 | |
206 | # If we have "make <whatever> modules", compile modules |
207 | # in addition to whatever we do anyway. |
208 | # Just "make" or "make all" shall build modules as well |
209 | |
210 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) |
211 | KBUILD_MODULES := 1 |
212 | endif |
213 | |
214 | ifeq ($(MAKECMDGOALS),) |
215 | KBUILD_MODULES := 1 |
216 | endif |
217 | |
218 | export KBUILD_MODULES KBUILD_BUILTIN |
219 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
220 | |
221 | # Beautify output |
222 | # --------------------------------------------------------------------------- |
223 | # |
224 | # Normally, we echo the whole command before executing it. By making |
225 | # that echo $($(quiet)$(cmd)), we now have the possibility to set |
226 | # $(quiet) to choose other forms of output instead, e.g. |
227 | # |
228 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ |
229 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< |
230 | # |
231 | # If $(quiet) is empty, the whole command will be printed. |
232 | # If it is set to "quiet_", only the short version will be printed. |
233 | # If it is set to "silent_", nothing wil be printed at all, since |
234 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
235 | # |
236 | # A simple variant is to prefix commands with $(Q) - that's useful |
237 | # for commands that shall be hidden in non-verbose mode. |
238 | # |
239 | # $(Q)ln $@ :< |
240 | # |
241 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. |
242 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. |
243 | |
244 | ifeq ($(KBUILD_VERBOSE),1) |
245 | quiet = |
246 | Q = |
247 | else |
248 | quiet=quiet_ |
249 | Q = @ |
250 | endif |
251 | |
252 | # If the user is running make -s (silent mode), suppress echoing of |
253 | # commands |
254 | |
255 | ifneq ($(findstring s,$(MAKEFLAGS)),) |
256 | quiet=silent_ |
257 | endif |
258 | |
259 | export quiet Q KBUILD_VERBOSE |
260 | |
261 | |
262 | # Look for make include files relative to root of kernel src |
263 | MAKEFLAGS += --include-dir=$(srctree) |
264 | |
265 | # We need some generic definitions |
266 | include $(srctree)/scripts/Kbuild.include |
267 | |
268 | # For maximum performance (+ possibly random breakage, uncomment |
269 | # the following) |
270 | |
271 | MAKEFLAGS += -rR |
272 | |
273 | # Make variables (CC, etc...) |
274 | |
275 | AS = $(CROSS_COMPILE)as |
276 | CC = $(CROSS_COMPILE)gcc |
277 | LD = $(CC) -nostdlib |
278 | CPP = $(CC) -E |
279 | AR = $(CROSS_COMPILE)ar |
280 | NM = $(CROSS_COMPILE)nm |
281 | STRIP = $(CROSS_COMPILE)strip |
282 | OBJCOPY = $(CROSS_COMPILE)objcopy |
283 | OBJDUMP = $(CROSS_COMPILE)objdump |
284 | AWK = awk |
285 | GENKSYMS = scripts/genksyms/genksyms |
286 | DEPMOD = /sbin/depmod |
287 | KALLSYMS = scripts/kallsyms |
288 | PERL = perl |
289 | CHECK = sparse |
290 | |
291 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF) |
292 | MODFLAGS = -DMODULE |
293 | CFLAGS_MODULE = $(MODFLAGS) |
294 | AFLAGS_MODULE = $(MODFLAGS) |
295 | LDFLAGS_MODULE = -r |
296 | CFLAGS_KERNEL = |
297 | AFLAGS_KERNEL = |
298 | |
299 | |
300 | # Use LINUXINCLUDE when you must reference the include/ directory. |
301 | # Needed to be compatible with the O= option |
302 | CFLAGS := |
303 | CPPFLAGS := |
304 | AFLAGS := |
305 | |
306 | # Read KERNELRELEASE from .kernelrelease (if it exists) |
307 | KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null) |
308 | KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) |
309 | |
310 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \ |
311 | ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \ |
312 | CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \ |
313 | HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
314 | |
315 | export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
316 | export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE |
317 | export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
318 | |
319 | # When compiling out-of-tree modules, put MODVERDIR in the module |
320 | # tree rather than in the kernel tree. The kernel tree might |
321 | # even be read-only. |
322 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
323 | |
324 | # Files to ignore in find ... statements |
325 | |
326 | RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o |
327 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git |
328 | |
329 | # =========================================================================== |
330 | # Rules shared between *config targets and build targets |
331 | |
332 | # Basic helpers built in scripts/ |
333 | PHONY += scripts_basic |
334 | scripts_basic: |
335 | $(Q)$(MAKE) $(build)=scripts/basic |
336 | |
337 | # To avoid any implicit rule to kick in, define an empty command. |
338 | scripts/basic/%: scripts_basic ; |
339 | |
340 | PHONY += outputmakefile |
341 | # outputmakefile generates a Makefile in the output directory, if using a |
342 | # separate output directory. This allows convenient use of make in the |
343 | # output directory. |
344 | outputmakefile: |
345 | ifneq ($(KBUILD_SRC),) |
346 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
347 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) |
348 | endif |
349 | |
350 | # To make sure we do not include .config for any of the *config targets |
351 | # catch them early, and hand them over to scripts/kconfig/Makefile |
352 | # It is allowed to specify more targets when calling make, including |
353 | # mixing *config targets and build targets. |
354 | # For example 'make oldconfig all'. |
355 | # Detect when mixed targets is specified, and make a second invocation |
356 | # of make so .config is not included in this case either (for *config). |
357 | |
358 | no-dot-config-targets := clean mrproper distclean \ |
359 | cscope TAGS tags help %docs check% |
360 | |
361 | config-targets := 0 |
362 | mixed-targets := 0 |
363 | dot-config := 1 |
364 | |
365 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) |
366 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) |
367 | dot-config := 0 |
368 | endif |
369 | endif |
370 | |
371 | ifeq ($(KBUILD_EXTMOD),) |
372 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) |
373 | config-targets := 1 |
374 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) |
375 | mixed-targets := 1 |
376 | endif |
377 | endif |
378 | endif |
379 | |
380 | ifeq ($(mixed-targets),1) |
381 | # =========================================================================== |
382 | # We're called with mixed targets (*config and build targets). |
383 | # Handle them one by one. |
384 | |
385 | %:: FORCE |
386 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ |
387 | |
388 | else |
389 | ifeq ($(config-targets),1) |
390 | # =========================================================================== |
391 | # *config targets only - make sure prerequisites are updated, and descend |
392 | # in scripts/kconfig to make the *config target |
393 | |
394 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. |
395 | # KBUILD_DEFCONFIG may point out an alternative default configuration |
396 | # used for 'make defconfig' |
397 | -include $(srctree)/arch/$(ARCH)/Makefile |
398 | export KBUILD_DEFCONFIG |
399 | |
400 | config %config: scripts_basic outputmakefile FORCE |
401 | $(Q)mkdir -p include |
402 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
403 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease |
404 | |
405 | else |
406 | # =========================================================================== |
407 | # Build targets only - this includes busybox, arch specific targets, clean |
408 | # targets and others. In general all targets except *config targets. |
409 | |
410 | ifeq ($(KBUILD_EXTMOD),) |
411 | # Additional helpers built in scripts/ |
412 | # Carefully list dependencies so we do not try to build scripts twice |
413 | # in parrallel |
414 | PHONY += scripts |
415 | scripts: scripts_basic include/config/MARKER |
416 | $(Q)$(MAKE) $(build)=$(@) |
417 | |
418 | scripts_basic: include/autoconf.h |
419 | |
420 | # Objects we will link into busybox / subdirs we need to visit |
421 | core-y := \ |
422 | applets/ \ |
423 | |
424 | libs-y := \ |
425 | archival/ \ |
426 | archival/libunarchive/ \ |
427 | console-tools/ \ |
428 | coreutils/ \ |
429 | coreutils/libcoreutils/ \ |
430 | debianutils/ \ |
431 | e2fsprogs/ \ |
432 | editors/ \ |
433 | findutils/ \ |
434 | init/ \ |
435 | libbb/ \ |
436 | libpwdgrp/ \ |
437 | loginutils/ \ |
438 | miscutils/ \ |
439 | modutils/ \ |
440 | networking/ \ |
441 | networking/libiproute/ \ |
442 | networking/udhcp/ \ |
443 | procps/ \ |
444 | runit/ \ |
445 | shell/ \ |
446 | sysklogd/ \ |
447 | util-linux/ \ |
448 | |
449 | endif # KBUILD_EXTMOD |
450 | |
451 | ifeq ($(dot-config),1) |
452 | # In this section, we need .config |
453 | |
454 | # Read in dependencies to all Kconfig* files, make sure to run |
455 | # oldconfig if changes are detected. |
456 | -include .kconfig.d |
457 | |
458 | -include .config |
459 | |
460 | # If .config needs to be updated, it will be done via the dependency |
461 | # that autoconf has on .config. |
462 | # To avoid any implicit rule to kick in, define an empty command |
463 | .config .kconfig.d: ; |
464 | |
465 | # Now we can define CFLAGS etc according to .config |
466 | include $(srctree)/Makefile.flags |
467 | |
468 | # If .config is newer than include/autoconf.h, someone tinkered |
469 | # with it and forgot to run make oldconfig. |
470 | # If kconfig.d is missing then we are probarly in a cleaned tree so |
471 | # we execute the config step to be sure to catch updated Kconfig files |
472 | include/autoconf.h: .kconfig.d .config |
473 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
474 | |
475 | else |
476 | # Dummy target needed, because used as prerequisite |
477 | include/autoconf.h: ; |
478 | endif |
479 | |
480 | # The all: target is the default when no target is given on the |
481 | # command line. |
482 | # This allow a user to issue only 'make' to build a kernel including modules |
483 | # Defaults busybox but it is usually overriden in the arch makefile |
484 | all: busybox |
485 | |
486 | -include $(srctree)/arch/$(ARCH)/Makefile |
487 | |
488 | # arch Makefile may override CC so keep this after arch Makefile is included |
489 | #bbox# NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
490 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
491 | |
492 | # warn about C99 declaration after statement |
493 | CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
494 | |
495 | # disable pointer signedness warnings in gcc 4.0 |
496 | CFLAGS += $(call cc-option,-Wno-pointer-sign,) |
497 | |
498 | # Default kernel image to build when no specific target is given. |
499 | # KBUILD_IMAGE may be overruled on the commandline or |
500 | # set in the environment |
501 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over |
502 | # this default value |
503 | export KBUILD_IMAGE ?= busybox |
504 | |
505 | # |
506 | # INSTALL_PATH specifies where to place the updated kernel and system map |
507 | # images. Default is /boot, but you can set it to other values |
508 | export INSTALL_PATH ?= /boot |
509 | |
510 | # |
511 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory |
512 | # relocations required by build roots. This is not defined in the |
513 | # makefile but the arguement can be passed to make if needed. |
514 | # |
515 | |
516 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
517 | export MODLIB |
518 | |
519 | |
520 | ifeq ($(KBUILD_EXTMOD),) |
521 | busybox-dirs := $(patsubst %/,%,$(filter %/, $(core-y) $(core-m) $(libs-y) $(libs-m))) |
522 | |
523 | busybox-alldirs := $(sort $(busybox-dirs) $(patsubst %/,%,$(filter %/, \ |
524 | $(core-n) $(core-) $(libs-n) $(libs-) \ |
525 | ))) |
526 | |
527 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) |
528 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
529 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) |
530 | libs-y := $(libs-y1) $(libs-y2) |
531 | |
532 | # Build busybox |
533 | # --------------------------------------------------------------------------- |
534 | # busybox is build from the objects selected by $(busybox-init) and |
535 | # $(busybox-main). Most are built-in.o files from top-level directories |
536 | # in the kernel tree, others are specified in arch/$(ARCH)Makefile. |
537 | # Ordering when linking is important, and $(busybox-init) must be first. |
538 | # |
539 | # busybox |
540 | # ^ |
541 | # | |
542 | # +-< $(busybox-init) |
543 | # | +--< init/version.o + more |
544 | # | |
545 | # +--< $(busybox-main) |
546 | # | +--< driver/built-in.o mm/built-in.o + more |
547 | # | |
548 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) |
549 | # |
550 | # busybox version (uname -v) cannot be updated during normal |
551 | # descending-into-subdirs phase since we do not yet know if we need to |
552 | # update busybox. |
553 | # Therefore this step is delayed until just before final link of busybox - |
554 | # except in the kallsyms case where it is done just before adding the |
555 | # symbols to the kernel. |
556 | # |
557 | # System.map is generated to document addresses of all kernel symbols |
558 | |
559 | busybox-all := $(core-y) $(libs-y) |
560 | |
561 | # Rule to link busybox - also used during CONFIG_KALLSYMS |
562 | # May be overridden by arch/$(ARCH)/Makefile |
563 | quiet_cmd_busybox__ ?= LINK $@ |
564 | cmd_busybox__ ?= $(srctree)/scripts/trylink $(CC) $(LDFLAGS) \ |
565 | -o $@ \ |
566 | -Wl,--warn-common -Wl,--sort-common \ |
567 | -Wl,--start-group $(busybox-all) -Wl,--end-group |
568 | |
569 | # Generate System.map |
570 | quiet_cmd_sysmap = SYSMAP |
571 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap |
572 | |
573 | # Link of busybox |
574 | # If CONFIG_KALLSYMS is set .version is already updated |
575 | # Generate System.map and verify that the content is consistent |
576 | # Use + in front of the busybox_version rule to silent warning with make -j2 |
577 | # First command is ':' to allow us to use + in front of the rule |
578 | define rule_busybox__ |
579 | : |
580 | $(call cmd,busybox__) |
581 | $(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@F).cmd |
582 | endef |
583 | |
584 | |
585 | ifdef CONFIG_KALLSYMS |
586 | # Generate section listing all symbols and add it into busybox $(kallsyms.o) |
587 | # It's a three stage process: |
588 | # o .tmp_busybox1 has all symbols and sections, but __kallsyms is |
589 | # empty |
590 | # Running kallsyms on that gives us .tmp_kallsyms1.o with |
591 | # the right size - busybox version (uname -v) is updated during this step |
592 | # o .tmp_busybox2 now has a __kallsyms section of the right size, |
593 | # but due to the added section, some addresses have shifted. |
594 | # From here, we generate a correct .tmp_kallsyms2.o |
595 | # o The correct .tmp_kallsyms2.o is linked into the final busybox. |
596 | # o Verify that the System.map from busybox matches the map from |
597 | # .tmp_busybox2, just in case we did not generate kallsyms correctly. |
598 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using |
599 | # .tmp_busybox3 and .tmp_kallsyms3.o. This is only meant as a |
600 | # temporary bypass to allow the kernel to be built while the |
601 | # maintainers work out what went wrong with kallsyms. |
602 | |
603 | ifdef CONFIG_KALLSYMS_EXTRA_PASS |
604 | last_kallsyms := 3 |
605 | else |
606 | last_kallsyms := 2 |
607 | endif |
608 | |
609 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o |
610 | |
611 | define verify_kallsyms |
612 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
613 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ |
614 | $(cmd_sysmap) .tmp_busybox$(last_kallsyms) .tmp_System.map |
615 | $(Q)cmp -s System.map .tmp_System.map || \ |
616 | (echo Inconsistent kallsyms data; \ |
617 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ |
618 | rm .tmp_kallsyms* ; /bin/false ) |
619 | endef |
620 | |
621 | # Update busybox version before link |
622 | # Use + in front of this rule to silent warning about make -j1 |
623 | # First command is ':' to allow us to use + in front of this rule |
624 | cmd_ksym_ld = $(cmd_busybox__) |
625 | define rule_ksym_ld |
626 | : |
627 | +$(call cmd,busybox_version) |
628 | $(call cmd,busybox__) |
629 | $(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@F).cmd |
630 | endef |
631 | |
632 | # Generate .S file with all kernel symbols |
633 | quiet_cmd_kallsyms = KSYM $@ |
634 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ |
635 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ |
636 | |
637 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE |
638 | $(call if_changed_dep,as_o_S) |
639 | |
640 | .tmp_kallsyms%.S: .tmp_busybox% $(KALLSYMS) |
641 | $(call cmd,kallsyms) |
642 | |
643 | # .tmp_busybox1 must be complete except kallsyms, so update busybox version |
644 | .tmp_busybox1: $(busybox-lds) $(busybox-all) FORCE |
645 | $(call if_changed_rule,ksym_ld) |
646 | |
647 | .tmp_busybox2: $(busybox-lds) $(busybox-all) .tmp_kallsyms1.o FORCE |
648 | $(call if_changed,busybox__) |
649 | |
650 | .tmp_busybox3: $(busybox-lds) $(busybox-all) .tmp_kallsyms2.o FORCE |
651 | $(call if_changed,busybox__) |
652 | |
653 | # Needs to visit scripts/ before $(KALLSYMS) can be used. |
654 | $(KALLSYMS): scripts ; |
655 | |
656 | # Generate some data for debugging strange kallsyms problems |
657 | debug_kallsyms: .tmp_map$(last_kallsyms) |
658 | |
659 | .tmp_map%: .tmp_busybox% FORCE |
660 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ |
661 | |
662 | .tmp_map3: .tmp_map2 |
663 | |
664 | .tmp_map2: .tmp_map1 |
665 | |
666 | endif # ifdef CONFIG_KALLSYMS |
667 | |
668 | # busybox image - including updated kernel symbols |
669 | busybox_unstripped: $(busybox-all) FORCE |
670 | $(call if_changed_rule,busybox__) |
671 | $(Q)rm -f .old_version |
672 | |
673 | busybox: busybox_unstripped |
674 | $(Q)$(STRIP) -s --remove-section=.note --remove-section=.comment \ |
675 | busybox_unstripped -o $@ |
676 | |
677 | # The actual objects are generated when descending, |
678 | # make sure no implicit rule kicks in |
679 | $(sort $(busybox-all)): $(busybox-dirs) ; |
680 | |
681 | # Handle descending into subdirectories listed in $(busybox-dirs) |
682 | # Preset locale variables to speed up the build process. Limit locale |
683 | # tweaks to this spot to avoid wrong language settings when running |
684 | # make menuconfig etc. |
685 | # Error messages still appears in the original language |
686 | |
687 | PHONY += $(busybox-dirs) |
688 | $(busybox-dirs): prepare scripts |
689 | $(Q)$(MAKE) $(build)=$@ |
690 | |
691 | # Build the kernel release string |
692 | # The KERNELRELEASE is stored in a file named .kernelrelease |
693 | # to be used when executing for example make install or make modules_install |
694 | # |
695 | # Take the contents of any files called localversion* and the config |
696 | # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. |
697 | # LOCALVERSION from the command line override all of this |
698 | |
699 | nullstring := |
700 | space := $(nullstring) # end of line |
701 | |
702 | ___localver = $(objtree)/localversion* $(srctree)/localversion* |
703 | __localver = $(sort $(wildcard $(___localver))) |
704 | # skip backup files (containing '~') |
705 | _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f))) |
706 | |
707 | localver = $(subst $(space),, \ |
708 | $(shell cat /dev/null $(_localver)) \ |
709 | $(patsubst "%",%,$(CONFIG_LOCALVERSION))) |
710 | |
711 | # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called |
712 | # and if the SCM is know a tag from the SCM is appended. |
713 | # The appended tag is determinded by the SCM used. |
714 | # |
715 | # Currently, only git is supported. |
716 | # Other SCMs can edit scripts/setlocalversion and add the appropriate |
717 | # checks as needed. |
718 | ifdef CONFIG_LOCALVERSION_AUTO |
719 | _localver-auto = $(shell $(CONFIG_SHELL) \ |
720 | $(srctree)/scripts/setlocalversion $(srctree)) |
721 | localver-auto = $(LOCALVERSION)$(_localver-auto) |
722 | endif |
723 | |
724 | localver-full = $(localver)$(localver-auto) |
725 | |
726 | # Store (new) KERNELRELASE string in .kernelrelease |
727 | kernelrelease = $(KERNELVERSION)$(localver-full) |
728 | .kernelrelease: FORCE |
729 | $(Q)rm -f $@ |
730 | $(Q)echo $(kernelrelease) > $@ |
731 | |
732 | |
733 | # Things we need to do before we recursively start building the kernel |
734 | # or the modules are listed in "prepare". |
735 | # A multi level approach is used. prepareN is processed before prepareN-1. |
736 | # archprepare is used in arch Makefiles and when processed asm symlink, |
737 | # version.h and scripts_basic is processed / created. |
738 | |
739 | # Listed in dependency order |
740 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
741 | |
742 | # prepare-all is deprecated, use prepare as valid replacement |
743 | PHONY += prepare-all |
744 | |
745 | # prepare3 is used to check if we are building in a separate output directory, |
746 | # and if so do: |
747 | # 1) Check that make has not been executed in the kernel src $(srctree) |
748 | # 2) Create the include2 directory, used for the second asm symlink |
749 | prepare3: .kernelrelease |
750 | ifneq ($(KBUILD_SRC),) |
751 | @echo ' Using $(srctree) as source for kernel' |
752 | $(Q)if [ -f $(srctree)/.config ]; then \ |
753 | echo " $(srctree) is not clean, please run 'make mrproper'";\ |
754 | echo " in the '$(srctree)' directory.";\ |
755 | /bin/false; \ |
756 | fi; |
757 | $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; |
758 | $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm |
759 | endif |
760 | |
761 | # prepare2 creates a makefile if using a separate output directory |
762 | prepare2: prepare3 outputmakefile |
763 | |
764 | prepare1: prepare2 include/config/MARKER |
765 | ifneq ($(KBUILD_MODULES),) |
766 | $(Q)mkdir -p $(MODVERDIR) |
767 | $(Q)rm -f $(MODVERDIR)/* |
768 | endif |
769 | |
770 | archprepare: prepare1 scripts_basic |
771 | |
772 | prepare0: archprepare FORCE |
773 | $(Q)$(MAKE) $(build)=. |
774 | |
775 | # All the preparing.. |
776 | prepare prepare-all: prepare0 |
777 | |
778 | # Leave this as default for preprocessing busybox.lds.S, which is now |
779 | # done in arch/$(ARCH)/kernel/Makefile |
780 | |
781 | export CPPFLAGS_busybox.lds += -P -C -U$(ARCH) |
782 | |
783 | # FIXME: The asm symlink changes when $(ARCH) changes. That's |
784 | # hard to detect, but I suppose "make mrproper" is a good idea |
785 | # before switching between archs anyway. |
786 | |
787 | #bbox# include/asm: |
788 | #bbox# @echo ' SYMLINK $@ -> include/asm-$(ARCH)' |
789 | #bbox# $(Q)if [ ! -d include ]; then mkdir -p include; fi; |
790 | #bbox# @ln -fsn asm-$(ARCH) $@ |
791 | |
792 | # Split autoconf.h into include/linux/config/* |
793 | quiet_cmd_gen_bbconfigopts = GEN include/bbconfigopts.h |
794 | cmd_gen_bbconfigopts = $(srctree)/scripts/mkconfigs > include/bbconfigopts.h |
795 | quiet_cmd_split_autoconf = SPLIT include/autoconf.h -> include/config/* |
796 | cmd_split_autoconf = scripts/basic/split-include include/autoconf.h include/config |
797 | #bbox# piggybacked generation of few .h files |
798 | include/config/MARKER: scripts/basic/split-include include/autoconf.h |
799 | $(call cmd,split_autoconf) |
800 | $(call cmd,gen_bbconfigopts) |
801 | @touch $@ |
802 | |
803 | # Generate some files |
804 | # --------------------------------------------------------------------------- |
805 | |
806 | # KERNELRELEASE can change from a few different places, meaning version.h |
807 | # needs to be updated, so this check is forced on all builds |
808 | |
809 | uts_len := 64 |
810 | |
811 | define filechk_version.h |
812 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ |
813 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ |
814 | exit 1; \ |
815 | fi; \ |
816 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \ |
817 | echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \ |
818 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \ |
819 | ) |
820 | endef |
821 | |
822 | # --------------------------------------------------------------------------- |
823 | |
824 | PHONY += depend dep |
825 | depend dep: |
826 | @echo '*** Warning: make $@ is unnecessary now.' |
827 | |
828 | # --------------------------------------------------------------------------- |
829 | # Modules |
830 | |
831 | ifdef CONFIG_MODULES |
832 | |
833 | # By default, build modules as well |
834 | |
835 | all: modules |
836 | |
837 | # Build modules |
838 | |
839 | PHONY += modules |
840 | modules: $(busybox-dirs) $(if $(KBUILD_BUILTIN),busybox) |
841 | @echo ' Building modules, stage 2.'; |
842 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost |
843 | |
844 | |
845 | # Target to prepare building external modules |
846 | PHONY += modules_prepare |
847 | modules_prepare: prepare scripts |
848 | |
849 | # Target to install modules |
850 | PHONY += modules_install |
851 | modules_install: _modinst_ _modinst_post |
852 | |
853 | PHONY += _modinst_ |
854 | _modinst_: |
855 | @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ |
856 | echo "Warning: you may need to install module-init-tools"; \ |
857 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ |
858 | sleep 1; \ |
859 | fi |
860 | @rm -rf $(MODLIB)/kernel |
861 | @rm -f $(MODLIB)/source |
862 | @mkdir -p $(MODLIB)/kernel |
863 | @ln -s $(srctree) $(MODLIB)/source |
864 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
865 | rm -f $(MODLIB)/build ; \ |
866 | ln -s $(objtree) $(MODLIB)/build ; \ |
867 | fi |
868 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst |
869 | |
870 | # If System.map exists, run depmod. This deliberately does not have a |
871 | # dependency on System.map since that would run the dependency tree on |
872 | # busybox. This depmod is only for convenience to give the initial |
873 | # boot a modules.dep even before / is mounted read-write. However the |
874 | # boot script depmod is the master version. |
875 | ifeq "$(strip $(INSTALL_MOD_PATH))" "" |
876 | depmod_opts := |
877 | else |
878 | depmod_opts := -b $(INSTALL_MOD_PATH) -r |
879 | endif |
880 | PHONY += _modinst_post |
881 | _modinst_post: _modinst_ |
882 | if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi |
883 | |
884 | else # CONFIG_MODULES |
885 | |
886 | # Modules not configured |
887 | # --------------------------------------------------------------------------- |
888 | |
889 | modules modules_install: FORCE |
890 | @echo |
891 | @echo "The present busybox configuration has modules disabled." |
892 | @echo "Type 'make config' and enable loadable module support." |
893 | @echo "Then build a kernel with module support enabled." |
894 | @echo |
895 | @exit 1 |
896 | |
897 | endif # CONFIG_MODULES |
898 | |
899 | ### |
900 | # Cleaning is done on three levels. |
901 | # make clean Delete most generated files |
902 | # Leave enough to build external modules |
903 | # make mrproper Delete the current configuration, and all generated files |
904 | # make distclean Remove editor backup files, patch leftover files and the like |
905 | |
906 | # Directories & files removed with 'make clean' |
907 | CLEAN_DIRS += $(MODVERDIR) |
908 | CLEAN_FILES += busybox* System.map \ |
909 | .tmp_kallsyms* .tmp_version .tmp_busybox* .tmp_System.map |
910 | |
911 | # Directories & files removed with 'make mrproper' |
912 | MRPROPER_DIRS += include/config include2 |
913 | MRPROPER_FILES += .config .config.old include/asm .version .old_version \ |
914 | include/autoconf.h \ |
915 | include/bbconfigopts.h \ |
916 | include/usage_compressed.h \ |
917 | .kernelrelease Module.symvers tags TAGS cscope* |
918 | |
919 | # clean - Delete most, but leave enough to build external modules |
920 | # |
921 | clean: rm-dirs := $(CLEAN_DIRS) |
922 | clean: rm-files := $(CLEAN_FILES) |
923 | clean-dirs := $(addprefix _clean_,$(srctree) $(busybox-alldirs)) |
924 | |
925 | PHONY += $(clean-dirs) clean archclean |
926 | $(clean-dirs): |
927 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
928 | |
929 | clean: archclean $(clean-dirs) |
930 | $(call cmd,rmdirs) |
931 | $(call cmd,rmfiles) |
932 | @find . $(RCS_FIND_IGNORE) \ |
933 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
934 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ |
935 | -type f -print | xargs rm -f |
936 | |
937 | # mrproper - Delete all generated files, including .config |
938 | # |
939 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) |
940 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
941 | mrproper-dirs := $(addprefix _mrproper_,scripts) |
942 | |
943 | PHONY += $(mrproper-dirs) mrproper archmrproper |
944 | $(mrproper-dirs): |
945 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) |
946 | |
947 | mrproper: clean archmrproper $(mrproper-dirs) |
948 | $(call cmd,rmdirs) |
949 | $(call cmd,rmfiles) |
950 | |
951 | # distclean |
952 | # |
953 | PHONY += distclean |
954 | |
955 | distclean: mrproper |
956 | @find $(srctree) $(RCS_FIND_IGNORE) \ |
957 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
958 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
959 | -o -name '.*.rej' -o -size 0 \ |
960 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
961 | -type f -print | xargs rm -f |
962 | |
963 | |
964 | # Packaging of the kernel to various formats |
965 | # --------------------------------------------------------------------------- |
966 | # rpm target kept for backward compatibility |
967 | package-dir := $(srctree)/scripts/package |
968 | |
969 | %pkg: FORCE |
970 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
971 | rpm: FORCE |
972 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
973 | |
974 | |
975 | # Brief documentation of the typical targets used |
976 | # --------------------------------------------------------------------------- |
977 | |
978 | boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) |
979 | boards := $(notdir $(boards)) |
980 | |
981 | -include $(srctree)/Makefile.help |
982 | |
983 | # Documentation targets |
984 | # --------------------------------------------------------------------------- |
985 | %docs: scripts_basic FORCE |
986 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
987 | |
988 | else # KBUILD_EXTMOD |
989 | |
990 | ### |
991 | # External module support. |
992 | # When building external modules the kernel used as basis is considered |
993 | # read-only, and no consistency checks are made and the make |
994 | # system is not used on the basis kernel. If updates are required |
995 | # in the basis kernel ordinary make commands (without M=...) must |
996 | # be used. |
997 | # |
998 | # The following are the only valid targets when building external |
999 | # modules. |
1000 | # make M=dir clean Delete all automatically generated files |
1001 | # make M=dir modules Make all modules in specified dir |
1002 | # make M=dir Same as 'make M=dir modules' |
1003 | # make M=dir modules_install |
1004 | # Install the modules build in the module directory |
1005 | # Assumes install directory is already created |
1006 | |
1007 | # We are always building modules |
1008 | KBUILD_MODULES := 1 |
1009 | PHONY += crmodverdir |
1010 | crmodverdir: |
1011 | $(Q)mkdir -p $(MODVERDIR) |
1012 | $(Q)rm -f $(MODVERDIR)/* |
1013 | |
1014 | PHONY += $(objtree)/Module.symvers |
1015 | $(objtree)/Module.symvers: |
1016 | @test -e $(objtree)/Module.symvers || ( \ |
1017 | echo; \ |
1018 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ |
1019 | echo " is missing; modules will have no dependencies and modversions."; \ |
1020 | echo ) |
1021 | |
1022 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
1023 | PHONY += $(module-dirs) modules |
1024 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1025 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) |
1026 | |
1027 | modules: $(module-dirs) |
1028 | @echo ' Building modules, stage 2.'; |
1029 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost |
1030 | |
1031 | PHONY += modules_install |
1032 | modules_install: _emodinst_ _emodinst_post |
1033 | |
1034 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1035 | PHONY += _emodinst_ |
1036 | _emodinst_: |
1037 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
1038 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst |
1039 | |
1040 | # Run depmod only is we have System.map and depmod is executable |
1041 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
1042 | cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \ |
1043 | $(DEPMOD) -ae -F System.map \ |
1044 | $(if $(strip $(INSTALL_MOD_PATH)), \ |
1045 | -b $(INSTALL_MOD_PATH) -r) \ |
1046 | $(KERNELRELEASE); \ |
1047 | fi |
1048 | |
1049 | PHONY += _emodinst_post |
1050 | _emodinst_post: _emodinst_ |
1051 | $(call cmd,depmod) |
1052 | |
1053 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1054 | |
1055 | PHONY += $(clean-dirs) clean |
1056 | $(clean-dirs): |
1057 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
1058 | |
1059 | clean: rm-dirs := $(MODVERDIR) |
1060 | clean: $(clean-dirs) |
1061 | $(call cmd,rmdirs) |
1062 | @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ |
1063 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
1064 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ |
1065 | -type f -print | xargs rm -f |
1066 | |
1067 | help: |
1068 | @echo ' Building external modules.' |
1069 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' |
1070 | @echo '' |
1071 | @echo ' modules - default target, build the module(s)' |
1072 | @echo ' modules_install - install the module' |
1073 | @echo ' clean - remove generated files in module directory only' |
1074 | @echo '' |
1075 | |
1076 | # Dummies... |
1077 | PHONY += prepare scripts |
1078 | prepare: ; |
1079 | scripts: ; |
1080 | endif # KBUILD_EXTMOD |
1081 | |
1082 | # Generate tags for editors |
1083 | # --------------------------------------------------------------------------- |
1084 | |
1085 | #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set |
1086 | #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file. |
1087 | #Adding $(srctree) adds about 20M on i386 to the size of the output file! |
1088 | |
1089 | ifeq ($(src),$(obj)) |
1090 | __srctree = |
1091 | else |
1092 | __srctree = $(srctree)/ |
1093 | endif |
1094 | |
1095 | ifeq ($(ALLSOURCE_ARCHS),) |
1096 | ifeq ($(ARCH),um) |
1097 | ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH) |
1098 | else |
1099 | ALLINCLUDE_ARCHS := $(ARCH) |
1100 | endif |
1101 | else |
1102 | #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour. |
1103 | ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS) |
1104 | endif |
1105 | |
1106 | ALLSOURCE_ARCHS := $(ARCH) |
1107 | |
1108 | define all-sources |
1109 | ( find $(__srctree) $(RCS_FIND_IGNORE) \ |
1110 | \( -name include -o -name arch \) -prune -o \ |
1111 | -name '*.[chS]' -print; \ |
1112 | for ARCH in $(ALLSOURCE_ARCHS) ; do \ |
1113 | find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \ |
1114 | -name '*.[chS]' -print; \ |
1115 | done ; \ |
1116 | find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \ |
1117 | -name '*.[chS]' -print; \ |
1118 | find $(__srctree)include $(RCS_FIND_IGNORE) \ |
1119 | \( -name config -o -name 'asm-*' \) -prune \ |
1120 | -o -name '*.[chS]' -print; \ |
1121 | for ARCH in $(ALLINCLUDE_ARCHS) ; do \ |
1122 | find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \ |
1123 | -name '*.[chS]' -print; \ |
1124 | done ; \ |
1125 | find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ |
1126 | -name '*.[chS]' -print ) |
1127 | endef |
1128 | |
1129 | quiet_cmd_cscope-file = FILELST cscope.files |
1130 | cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files |
1131 | |
1132 | quiet_cmd_cscope = MAKE cscope.out |
1133 | cmd_cscope = cscope -b |
1134 | |
1135 | cscope: FORCE |
1136 | $(call cmd,cscope-file) |
1137 | $(call cmd,cscope) |
1138 | |
1139 | quiet_cmd_TAGS = MAKE $@ |
1140 | define cmd_TAGS |
1141 | rm -f $@; \ |
1142 | ETAGSF=`etags --version | grep -i exuberant >/dev/null && \ |
1143 | echo "-I __initdata,__exitdata,__acquires,__releases \ |
1144 | -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ |
1145 | --extra=+f --c-kinds=+px"`; \ |
1146 | $(all-sources) | xargs etags $$ETAGSF -a |
1147 | endef |
1148 | |
1149 | TAGS: FORCE |
1150 | $(call cmd,TAGS) |
1151 | |
1152 | |
1153 | quiet_cmd_tags = MAKE $@ |
1154 | define cmd_tags |
1155 | rm -f $@; \ |
1156 | CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \ |
1157 | echo "-I __initdata,__exitdata,__acquires,__releases \ |
1158 | -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ |
1159 | --extra=+f --c-kinds=+px"`; \ |
1160 | $(all-sources) | xargs ctags $$CTAGSF -a |
1161 | endef |
1162 | |
1163 | tags: FORCE |
1164 | $(call cmd,tags) |
1165 | |
1166 | |
1167 | # Scripts to check various things for consistency |
1168 | # --------------------------------------------------------------------------- |
1169 | |
1170 | includecheck: |
1171 | find * $(RCS_FIND_IGNORE) \ |
1172 | -name '*.[hcS]' -type f -print | sort \ |
1173 | | xargs $(PERL) -w scripts/checkincludes.pl |
1174 | |
1175 | versioncheck: |
1176 | find * $(RCS_FIND_IGNORE) \ |
1177 | -name '*.[hcS]' -type f -print | sort \ |
1178 | | xargs $(PERL) -w scripts/checkversion.pl |
1179 | |
1180 | namespacecheck: |
1181 | $(PERL) $(srctree)/scripts/namespace.pl |
1182 | |
1183 | endif #ifeq ($(config-targets),1) |
1184 | endif #ifeq ($(mixed-targets),1) |
1185 | |
1186 | PHONY += checkstack |
1187 | checkstack: |
1188 | $(OBJDUMP) -d busybox $$(find . -name '*.ko') | \ |
1189 | $(PERL) $(src)/scripts/checkstack.pl $(ARCH) |
1190 | |
1191 | kernelrelease: |
1192 | $(if $(wildcard .kernelrelease), $(Q)echo $(KERNELRELEASE), \ |
1193 | $(error kernelrelease not valid - run 'make *config' to update it)) |
1194 | kernelversion: |
1195 | @echo $(KERNELVERSION) |
1196 | |
1197 | # Single targets |
1198 | # --------------------------------------------------------------------------- |
1199 | # Single targets are compatible with: |
1200 | # - build whith mixed source and output |
1201 | # - build with separate output dir 'make O=...' |
1202 | # - external modules |
1203 | # |
1204 | # target-dir => where to store outputfile |
1205 | # build-dir => directory in kernel source tree to use |
1206 | |
1207 | ifeq ($(KBUILD_EXTMOD),) |
1208 | build-dir = $(patsubst %/,%,$(dir $@)) |
1209 | target-dir = $(dir $@) |
1210 | else |
1211 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) |
1212 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) |
1213 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) |
1214 | endif |
1215 | |
1216 | %.s: %.c prepare scripts FORCE |
1217 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1218 | %.i: %.c prepare scripts FORCE |
1219 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1220 | %.o: %.c prepare scripts FORCE |
1221 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1222 | %.lst: %.c prepare scripts FORCE |
1223 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1224 | %.s: %.S prepare scripts FORCE |
1225 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1226 | %.o: %.S prepare scripts FORCE |
1227 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
1228 | |
1229 | # Modules |
1230 | / %/: prepare scripts FORCE |
1231 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
1232 | $(build)=$(build-dir) |
1233 | %.ko: prepare scripts FORCE |
1234 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
1235 | $(build)=$(build-dir) $(@:.ko=.o) |
1236 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost |
1237 | |
1238 | # FIXME Should go into a make.lib or something |
1239 | # =========================================================================== |
1240 | |
1241 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) |
1242 | cmd_rmdirs = rm -rf $(rm-dirs) |
1243 | |
1244 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) |
1245 | cmd_rmfiles = rm -f $(rm-files) |
1246 | |
1247 | |
1248 | a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \ |
1249 | $(NOSTDINC_FLAGS) $(CPPFLAGS) \ |
1250 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o) |
1251 | |
1252 | quiet_cmd_as_o_S = AS $@ |
1253 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< |
1254 | |
1255 | # read all saved command lines |
1256 | |
1257 | targets := $(wildcard $(sort $(targets))) |
1258 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
1259 | |
1260 | ifneq ($(cmd_files),) |
1261 | $(cmd_files): ; # Do not try to update included dependency files |
1262 | include $(cmd_files) |
1263 | endif |
1264 | |
1265 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
1266 | # Usage: |
1267 | # $(Q)$(MAKE) $(clean)=dir |
1268 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj |
1269 | |
1270 | endif # skip-makefile |
1271 | |
1272 | PHONY += FORCE |
1273 | FORCE: |
1274 | |
1275 | -include $(srctree)/Makefile.custom |
1276 | |
1277 | # Declare the contents of the .PHONY variable as phony. We keep that |
1278 | # information in a variable se we can use it in if_changed and friends. |
1279 | .PHONY: $(PHONY) |