Annotation of /tags/mkinitrd-6_3_0/busybox/Makefile
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
Original Path: trunk/mkinitrd-magellan/busybox/Makefile
File size: 43054 byte(s)
Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
Original Path: trunk/mkinitrd-magellan/busybox/Makefile
File size: 43054 byte(s)
-updated to busybox-1.17.1
1 | niro | 532 | VERSION = 1 |
2 | niro | 1123 | PATCHLEVEL = 17 |
3 | niro | 984 | SUBLEVEL = 1 |
4 | niro | 532 | 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 | # Cross compiling and selecting different set of gcc/bin-utils | ||
146 | # --------------------------------------------------------------------------- | ||
147 | # | ||
148 | # When performing cross compilation for other architectures ARCH shall be set | ||
149 | # to the target architecture. (See arch/* for the possibilities). | ||
150 | # ARCH can be set during invocation of make: | ||
151 | # make ARCH=ia64 | ||
152 | # Another way is to have ARCH set in the environment. | ||
153 | # The default ARCH is the host where make is executed. | ||
154 | |||
155 | # CROSS_COMPILE specify the prefix used for all executables used | ||
156 | # during compilation. Only gcc and related bin-utils executables | ||
157 | # are prefixed with $(CROSS_COMPILE). | ||
158 | # CROSS_COMPILE can be set on the command line | ||
159 | # make CROSS_COMPILE=ia64-linux- | ||
160 | # Alternatively CROSS_COMPILE can be set in the environment. | ||
161 | # Default value for CROSS_COMPILE is not to prefix executables | ||
162 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile | ||
163 | |||
164 | niro | 816 | CROSS_COMPILE ?= |
165 | # bbox: we may have CONFIG_CROSS_COMPILER_PREFIX in .config, | ||
166 | # and it has not been included yet... thus using an awkward syntax. | ||
167 | ifeq ($(CROSS_COMPILE),) | ||
168 | CROSS_COMPILE := $(shell grep ^CONFIG_CROSS_COMPILER_PREFIX .config 2>/dev/null) | ||
169 | CROSS_COMPILE := $(subst CONFIG_CROSS_COMPILER_PREFIX=,,$(CROSS_COMPILE)) | ||
170 | CROSS_COMPILE := $(subst ",,$(CROSS_COMPILE)) | ||
171 | niro | 984 | #") |
172 | niro | 816 | endif |
173 | niro | 532 | |
174 | niro | 816 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
175 | # first, and if a usermode build is happening, the "ARCH=um" on the command | ||
176 | # line overrides the setting of ARCH below. If a native build is happening, | ||
177 | # then ARCH is assigned, getting whatever value it gets normally, and | ||
178 | # SUBARCH is subsequently ignored. | ||
179 | |||
180 | ifneq ($(CROSS_COMPILE),) | ||
181 | SUBARCH := $(shell echo $(CROSS_COMPILE) | cut -d- -f1) | ||
182 | else | ||
183 | SUBARCH := $(shell uname -m) | ||
184 | endif | ||
185 | SUBARCH := $(shell echo $(SUBARCH) | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ | ||
186 | -e s/arm.*/arm/ -e s/sa110/arm/ \ | ||
187 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ | ||
188 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ ) | ||
189 | |||
190 | ARCH ?= $(SUBARCH) | ||
191 | |||
192 | niro | 532 | # Architecture as present in compile.h |
193 | UTS_MACHINE := $(ARCH) | ||
194 | |||
195 | # SHELL used by kbuild | ||
196 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | ||
197 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | ||
198 | else echo sh; fi ; fi) | ||
199 | |||
200 | # Decide whether to build built-in, modular, or both. | ||
201 | # Normally, just do built-in. | ||
202 | |||
203 | KBUILD_MODULES := | ||
204 | KBUILD_BUILTIN := 1 | ||
205 | |||
206 | # If we have only "make modules", don't compile built-in objects. | ||
207 | # When we're building modules with modversions, we need to consider | ||
208 | # the built-in objects during the descend as well, in order to | ||
209 | # make sure the checksums are uptodate before we record them. | ||
210 | |||
211 | ifeq ($(MAKECMDGOALS),modules) | ||
212 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) | ||
213 | endif | ||
214 | |||
215 | # If we have "make <whatever> modules", compile modules | ||
216 | # in addition to whatever we do anyway. | ||
217 | # Just "make" or "make all" shall build modules as well | ||
218 | |||
219 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) | ||
220 | KBUILD_MODULES := 1 | ||
221 | endif | ||
222 | |||
223 | ifeq ($(MAKECMDGOALS),) | ||
224 | KBUILD_MODULES := 1 | ||
225 | endif | ||
226 | |||
227 | export KBUILD_MODULES KBUILD_BUILTIN | ||
228 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD | ||
229 | |||
230 | # Beautify output | ||
231 | # --------------------------------------------------------------------------- | ||
232 | # | ||
233 | # Normally, we echo the whole command before executing it. By making | ||
234 | # that echo $($(quiet)$(cmd)), we now have the possibility to set | ||
235 | # $(quiet) to choose other forms of output instead, e.g. | ||
236 | # | ||
237 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ | ||
238 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | ||
239 | # | ||
240 | # If $(quiet) is empty, the whole command will be printed. | ||
241 | # If it is set to "quiet_", only the short version will be printed. | ||
242 | # If it is set to "silent_", nothing wil be printed at all, since | ||
243 | # the variable $(silent_cmd_cc_o_c) doesn't exist. | ||
244 | # | ||
245 | # A simple variant is to prefix commands with $(Q) - that's useful | ||
246 | # for commands that shall be hidden in non-verbose mode. | ||
247 | # | ||
248 | # $(Q)ln $@ :< | ||
249 | # | ||
250 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. | ||
251 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. | ||
252 | |||
253 | ifeq ($(KBUILD_VERBOSE),1) | ||
254 | quiet = | ||
255 | Q = | ||
256 | else | ||
257 | quiet=quiet_ | ||
258 | Q = @ | ||
259 | endif | ||
260 | |||
261 | # If the user is running make -s (silent mode), suppress echoing of | ||
262 | # commands | ||
263 | |||
264 | ifneq ($(findstring s,$(MAKEFLAGS)),) | ||
265 | quiet=silent_ | ||
266 | endif | ||
267 | |||
268 | export quiet Q KBUILD_VERBOSE | ||
269 | |||
270 | |||
271 | # Look for make include files relative to root of kernel src | ||
272 | MAKEFLAGS += --include-dir=$(srctree) | ||
273 | |||
274 | niro | 816 | HOSTCC = gcc |
275 | HOSTCXX = g++ | ||
276 | HOSTCFLAGS := | ||
277 | HOSTCXXFLAGS := | ||
278 | niro | 532 | # We need some generic definitions |
279 | include $(srctree)/scripts/Kbuild.include | ||
280 | |||
281 | niro | 816 | HOSTCFLAGS += $(call hostcc-option,-Wall -Wstrict-prototypes -O2 -fomit-frame-pointer,) |
282 | HOSTCXXFLAGS += -O2 | ||
283 | |||
284 | niro | 532 | # For maximum performance (+ possibly random breakage, uncomment |
285 | # the following) | ||
286 | |||
287 | MAKEFLAGS += -rR | ||
288 | |||
289 | # Make variables (CC, etc...) | ||
290 | |||
291 | AS = $(CROSS_COMPILE)as | ||
292 | CC = $(CROSS_COMPILE)gcc | ||
293 | LD = $(CC) -nostdlib | ||
294 | CPP = $(CC) -E | ||
295 | AR = $(CROSS_COMPILE)ar | ||
296 | NM = $(CROSS_COMPILE)nm | ||
297 | STRIP = $(CROSS_COMPILE)strip | ||
298 | OBJCOPY = $(CROSS_COMPILE)objcopy | ||
299 | OBJDUMP = $(CROSS_COMPILE)objdump | ||
300 | AWK = awk | ||
301 | GENKSYMS = scripts/genksyms/genksyms | ||
302 | DEPMOD = /sbin/depmod | ||
303 | KALLSYMS = scripts/kallsyms | ||
304 | PERL = perl | ||
305 | CHECK = sparse | ||
306 | |||
307 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF) | ||
308 | MODFLAGS = -DMODULE | ||
309 | CFLAGS_MODULE = $(MODFLAGS) | ||
310 | AFLAGS_MODULE = $(MODFLAGS) | ||
311 | LDFLAGS_MODULE = -r | ||
312 | CFLAGS_KERNEL = | ||
313 | AFLAGS_KERNEL = | ||
314 | |||
315 | |||
316 | # Use LINUXINCLUDE when you must reference the include/ directory. | ||
317 | # Needed to be compatible with the O= option | ||
318 | niro | 816 | CFLAGS := $(CFLAGS) |
319 | # Added only to final link stage of busybox binary | ||
320 | CFLAGS_busybox := $(CFLAGS_busybox) | ||
321 | CPPFLAGS := $(CPPFLAGS) | ||
322 | AFLAGS := $(AFLAGS) | ||
323 | LDFLAGS := $(LDFLAGS) | ||
324 | LDLIBS := | ||
325 | niro | 532 | |
326 | # Read KERNELRELEASE from .kernelrelease (if it exists) | ||
327 | KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null) | ||
328 | KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) | ||
329 | |||
330 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \ | ||
331 | ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \ | ||
332 | CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \ | ||
333 | HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS | ||
334 | |||
335 | export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS | ||
336 | export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE | ||
337 | export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE | ||
338 | niro | 816 | export FLTFLAGS |
339 | niro | 532 | |
340 | # When compiling out-of-tree modules, put MODVERDIR in the module | ||
341 | # tree rather than in the kernel tree. The kernel tree might | ||
342 | # even be read-only. | ||
343 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions | ||
344 | |||
345 | # Files to ignore in find ... statements | ||
346 | |||
347 | 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 | ||
348 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git | ||
349 | |||
350 | # =========================================================================== | ||
351 | # Rules shared between *config targets and build targets | ||
352 | |||
353 | # Basic helpers built in scripts/ | ||
354 | PHONY += scripts_basic | ||
355 | scripts_basic: | ||
356 | $(Q)$(MAKE) $(build)=scripts/basic | ||
357 | |||
358 | # To avoid any implicit rule to kick in, define an empty command. | ||
359 | scripts/basic/%: scripts_basic ; | ||
360 | |||
361 | niro | 1123 | # This target generates Kbuild's and Config.in's from *.c files |
362 | PHONY += gen_build_files | ||
363 | gen_build_files: $(wildcard $(srctree)/*/*.c) $(wildcard $(srctree)/*/*/*.c) | ||
364 | $(Q)$(srctree)/scripts/gen_build_files.sh $(srctree) $(objtree) | ||
365 | |||
366 | niro | 984 | # bbox: we have helpers in applets/ |
367 | # we depend on scripts_basic, since scripts/basic/fixdep | ||
368 | # must be built before any other host prog | ||
369 | PHONY += applets_dir | ||
370 | niro | 1123 | applets_dir: scripts_basic gen_build_files |
371 | niro | 984 | $(Q)$(MAKE) $(build)=applets |
372 | |||
373 | applets/%: applets_dir ; | ||
374 | |||
375 | niro | 532 | PHONY += outputmakefile |
376 | # outputmakefile generates a Makefile in the output directory, if using a | ||
377 | # separate output directory. This allows convenient use of make in the | ||
378 | # output directory. | ||
379 | outputmakefile: | ||
380 | ifneq ($(KBUILD_SRC),) | ||
381 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ | ||
382 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) | ||
383 | endif | ||
384 | |||
385 | # To make sure we do not include .config for any of the *config targets | ||
386 | # catch them early, and hand them over to scripts/kconfig/Makefile | ||
387 | # It is allowed to specify more targets when calling make, including | ||
388 | # mixing *config targets and build targets. | ||
389 | # For example 'make oldconfig all'. | ||
390 | # Detect when mixed targets is specified, and make a second invocation | ||
391 | # of make so .config is not included in this case either (for *config). | ||
392 | |||
393 | no-dot-config-targets := clean mrproper distclean \ | ||
394 | niro | 816 | cscope TAGS tags help %docs |
395 | #bbox# check% is removed from above | ||
396 | niro | 532 | |
397 | config-targets := 0 | ||
398 | mixed-targets := 0 | ||
399 | dot-config := 1 | ||
400 | |||
401 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) | ||
402 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) | ||
403 | dot-config := 0 | ||
404 | endif | ||
405 | endif | ||
406 | |||
407 | ifeq ($(KBUILD_EXTMOD),) | ||
408 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) | ||
409 | config-targets := 1 | ||
410 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) | ||
411 | mixed-targets := 1 | ||
412 | endif | ||
413 | endif | ||
414 | endif | ||
415 | |||
416 | ifeq ($(mixed-targets),1) | ||
417 | # =========================================================================== | ||
418 | # We're called with mixed targets (*config and build targets). | ||
419 | # Handle them one by one. | ||
420 | |||
421 | %:: FORCE | ||
422 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ | ||
423 | |||
424 | else | ||
425 | ifeq ($(config-targets),1) | ||
426 | # =========================================================================== | ||
427 | # *config targets only - make sure prerequisites are updated, and descend | ||
428 | # in scripts/kconfig to make the *config target | ||
429 | |||
430 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. | ||
431 | # KBUILD_DEFCONFIG may point out an alternative default configuration | ||
432 | # used for 'make defconfig' | ||
433 | -include $(srctree)/arch/$(ARCH)/Makefile | ||
434 | export KBUILD_DEFCONFIG | ||
435 | |||
436 | niro | 1123 | config %config: scripts_basic outputmakefile gen_build_files FORCE |
437 | niro | 532 | $(Q)mkdir -p include |
438 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ | ||
439 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease | ||
440 | |||
441 | else | ||
442 | # =========================================================================== | ||
443 | # Build targets only - this includes busybox, arch specific targets, clean | ||
444 | # targets and others. In general all targets except *config targets. | ||
445 | |||
446 | ifeq ($(KBUILD_EXTMOD),) | ||
447 | # Additional helpers built in scripts/ | ||
448 | # Carefully list dependencies so we do not try to build scripts twice | ||
449 | niro | 1123 | # in parallel |
450 | niro | 532 | PHONY += scripts |
451 | niro | 1123 | scripts: gen_build_files scripts_basic include/config/MARKER |
452 | niro | 532 | $(Q)$(MAKE) $(build)=$(@) |
453 | |||
454 | scripts_basic: include/autoconf.h | ||
455 | |||
456 | # Objects we will link into busybox / subdirs we need to visit | ||
457 | core-y := \ | ||
458 | applets/ \ | ||
459 | |||
460 | libs-y := \ | ||
461 | archival/ \ | ||
462 | archival/libunarchive/ \ | ||
463 | console-tools/ \ | ||
464 | coreutils/ \ | ||
465 | coreutils/libcoreutils/ \ | ||
466 | debianutils/ \ | ||
467 | e2fsprogs/ \ | ||
468 | editors/ \ | ||
469 | findutils/ \ | ||
470 | init/ \ | ||
471 | libbb/ \ | ||
472 | libpwdgrp/ \ | ||
473 | loginutils/ \ | ||
474 | niro | 816 | mailutils/ \ |
475 | niro | 532 | miscutils/ \ |
476 | modutils/ \ | ||
477 | networking/ \ | ||
478 | networking/libiproute/ \ | ||
479 | networking/udhcp/ \ | ||
480 | niro | 816 | printutils/ \ |
481 | niro | 532 | procps/ \ |
482 | runit/ \ | ||
483 | niro | 816 | selinux/ \ |
484 | niro | 532 | shell/ \ |
485 | sysklogd/ \ | ||
486 | util-linux/ \ | ||
487 | niro | 816 | util-linux/volume_id/ \ |
488 | niro | 532 | |
489 | endif # KBUILD_EXTMOD | ||
490 | |||
491 | ifeq ($(dot-config),1) | ||
492 | # In this section, we need .config | ||
493 | |||
494 | # Read in dependencies to all Kconfig* files, make sure to run | ||
495 | # oldconfig if changes are detected. | ||
496 | -include .kconfig.d | ||
497 | |||
498 | -include .config | ||
499 | |||
500 | # If .config needs to be updated, it will be done via the dependency | ||
501 | # that autoconf has on .config. | ||
502 | # To avoid any implicit rule to kick in, define an empty command | ||
503 | .config .kconfig.d: ; | ||
504 | |||
505 | # Now we can define CFLAGS etc according to .config | ||
506 | include $(srctree)/Makefile.flags | ||
507 | |||
508 | # If .config is newer than include/autoconf.h, someone tinkered | ||
509 | # with it and forgot to run make oldconfig. | ||
510 | # If kconfig.d is missing then we are probarly in a cleaned tree so | ||
511 | # we execute the config step to be sure to catch updated Kconfig files | ||
512 | niro | 1123 | include/autoconf.h: .kconfig.d .config $(wildcard $(srctree)/*/*.c) $(wildcard $(srctree)/*/*/*.c) | gen_build_files |
513 | niro | 532 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
514 | |||
515 | niro | 1123 | include/usage.h: gen_build_files |
516 | |||
517 | niro | 532 | else |
518 | # Dummy target needed, because used as prerequisite | ||
519 | include/autoconf.h: ; | ||
520 | endif | ||
521 | |||
522 | # The all: target is the default when no target is given on the | ||
523 | # command line. | ||
524 | # This allow a user to issue only 'make' to build a kernel including modules | ||
525 | niro | 816 | # Defaults busybox but it is usually overridden in the arch makefile |
526 | all: busybox doc | ||
527 | niro | 532 | |
528 | -include $(srctree)/arch/$(ARCH)/Makefile | ||
529 | |||
530 | # arch Makefile may override CC so keep this after arch Makefile is included | ||
531 | #bbox# NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) | ||
532 | CHECKFLAGS += $(NOSTDINC_FLAGS) | ||
533 | |||
534 | # Default kernel image to build when no specific target is given. | ||
535 | # KBUILD_IMAGE may be overruled on the commandline or | ||
536 | # set in the environment | ||
537 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over | ||
538 | # this default value | ||
539 | export KBUILD_IMAGE ?= busybox | ||
540 | |||
541 | # | ||
542 | # INSTALL_PATH specifies where to place the updated kernel and system map | ||
543 | # images. Default is /boot, but you can set it to other values | ||
544 | export INSTALL_PATH ?= /boot | ||
545 | |||
546 | # | ||
547 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory | ||
548 | # relocations required by build roots. This is not defined in the | ||
549 | # makefile but the arguement can be passed to make if needed. | ||
550 | # | ||
551 | |||
552 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) | ||
553 | export MODLIB | ||
554 | |||
555 | |||
556 | ifeq ($(KBUILD_EXTMOD),) | ||
557 | busybox-dirs := $(patsubst %/,%,$(filter %/, $(core-y) $(core-m) $(libs-y) $(libs-m))) | ||
558 | |||
559 | busybox-alldirs := $(sort $(busybox-dirs) $(patsubst %/,%,$(filter %/, \ | ||
560 | $(core-n) $(core-) $(libs-n) $(libs-) \ | ||
561 | ))) | ||
562 | |||
563 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) | ||
564 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) | ||
565 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) | ||
566 | libs-y := $(libs-y1) $(libs-y2) | ||
567 | |||
568 | # Build busybox | ||
569 | # --------------------------------------------------------------------------- | ||
570 | # busybox is build from the objects selected by $(busybox-init) and | ||
571 | # $(busybox-main). Most are built-in.o files from top-level directories | ||
572 | # in the kernel tree, others are specified in arch/$(ARCH)Makefile. | ||
573 | # Ordering when linking is important, and $(busybox-init) must be first. | ||
574 | # | ||
575 | # busybox | ||
576 | # ^ | ||
577 | # | | ||
578 | # +-< $(busybox-init) | ||
579 | # | +--< init/version.o + more | ||
580 | # | | ||
581 | # +--< $(busybox-main) | ||
582 | # | +--< driver/built-in.o mm/built-in.o + more | ||
583 | # | | ||
584 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) | ||
585 | # | ||
586 | # busybox version (uname -v) cannot be updated during normal | ||
587 | # descending-into-subdirs phase since we do not yet know if we need to | ||
588 | # update busybox. | ||
589 | # Therefore this step is delayed until just before final link of busybox - | ||
590 | # except in the kallsyms case where it is done just before adding the | ||
591 | # symbols to the kernel. | ||
592 | # | ||
593 | # System.map is generated to document addresses of all kernel symbols | ||
594 | |||
595 | busybox-all := $(core-y) $(libs-y) | ||
596 | |||
597 | # Rule to link busybox - also used during CONFIG_KALLSYMS | ||
598 | # May be overridden by arch/$(ARCH)/Makefile | ||
599 | quiet_cmd_busybox__ ?= LINK $@ | ||
600 | niro | 816 | cmd_busybox__ ?= $(srctree)/scripts/trylink \ |
601 | "$@" \ | ||
602 | "$(CC)" \ | ||
603 | "$(CFLAGS) $(CFLAGS_busybox)" \ | ||
604 | "$(LDFLAGS) $(EXTRA_LDFLAGS)" \ | ||
605 | "$(core-y)" \ | ||
606 | "$(libs-y)" \ | ||
607 | "$(LDLIBS)" | ||
608 | niro | 532 | |
609 | # Generate System.map | ||
610 | quiet_cmd_sysmap = SYSMAP | ||
611 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap | ||
612 | |||
613 | # Link of busybox | ||
614 | # If CONFIG_KALLSYMS is set .version is already updated | ||
615 | # Generate System.map and verify that the content is consistent | ||
616 | # Use + in front of the busybox_version rule to silent warning with make -j2 | ||
617 | # First command is ':' to allow us to use + in front of the rule | ||
618 | define rule_busybox__ | ||
619 | : | ||
620 | $(call cmd,busybox__) | ||
621 | $(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@F).cmd | ||
622 | endef | ||
623 | |||
624 | |||
625 | ifdef CONFIG_KALLSYMS | ||
626 | # Generate section listing all symbols and add it into busybox $(kallsyms.o) | ||
627 | # It's a three stage process: | ||
628 | # o .tmp_busybox1 has all symbols and sections, but __kallsyms is | ||
629 | # empty | ||
630 | # Running kallsyms on that gives us .tmp_kallsyms1.o with | ||
631 | # the right size - busybox version (uname -v) is updated during this step | ||
632 | # o .tmp_busybox2 now has a __kallsyms section of the right size, | ||
633 | # but due to the added section, some addresses have shifted. | ||
634 | # From here, we generate a correct .tmp_kallsyms2.o | ||
635 | # o The correct .tmp_kallsyms2.o is linked into the final busybox. | ||
636 | # o Verify that the System.map from busybox matches the map from | ||
637 | # .tmp_busybox2, just in case we did not generate kallsyms correctly. | ||
638 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using | ||
639 | # .tmp_busybox3 and .tmp_kallsyms3.o. This is only meant as a | ||
640 | # temporary bypass to allow the kernel to be built while the | ||
641 | # maintainers work out what went wrong with kallsyms. | ||
642 | |||
643 | ifdef CONFIG_KALLSYMS_EXTRA_PASS | ||
644 | last_kallsyms := 3 | ||
645 | else | ||
646 | last_kallsyms := 2 | ||
647 | endif | ||
648 | |||
649 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o | ||
650 | |||
651 | define verify_kallsyms | ||
652 | $(Q)$(if $($(quiet)cmd_sysmap), \ | ||
653 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ | ||
654 | $(cmd_sysmap) .tmp_busybox$(last_kallsyms) .tmp_System.map | ||
655 | $(Q)cmp -s System.map .tmp_System.map || \ | ||
656 | (echo Inconsistent kallsyms data; \ | ||
657 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ | ||
658 | rm .tmp_kallsyms* ; /bin/false ) | ||
659 | endef | ||
660 | |||
661 | # Update busybox version before link | ||
662 | # Use + in front of this rule to silent warning about make -j1 | ||
663 | # First command is ':' to allow us to use + in front of this rule | ||
664 | cmd_ksym_ld = $(cmd_busybox__) | ||
665 | define rule_ksym_ld | ||
666 | : | ||
667 | +$(call cmd,busybox_version) | ||
668 | $(call cmd,busybox__) | ||
669 | $(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@F).cmd | ||
670 | endef | ||
671 | |||
672 | # Generate .S file with all kernel symbols | ||
673 | quiet_cmd_kallsyms = KSYM $@ | ||
674 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ | ||
675 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ | ||
676 | |||
677 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE | ||
678 | $(call if_changed_dep,as_o_S) | ||
679 | |||
680 | .tmp_kallsyms%.S: .tmp_busybox% $(KALLSYMS) | ||
681 | $(call cmd,kallsyms) | ||
682 | |||
683 | # .tmp_busybox1 must be complete except kallsyms, so update busybox version | ||
684 | .tmp_busybox1: $(busybox-lds) $(busybox-all) FORCE | ||
685 | $(call if_changed_rule,ksym_ld) | ||
686 | |||
687 | .tmp_busybox2: $(busybox-lds) $(busybox-all) .tmp_kallsyms1.o FORCE | ||
688 | $(call if_changed,busybox__) | ||
689 | |||
690 | .tmp_busybox3: $(busybox-lds) $(busybox-all) .tmp_kallsyms2.o FORCE | ||
691 | $(call if_changed,busybox__) | ||
692 | |||
693 | # Needs to visit scripts/ before $(KALLSYMS) can be used. | ||
694 | $(KALLSYMS): scripts ; | ||
695 | |||
696 | # Generate some data for debugging strange kallsyms problems | ||
697 | debug_kallsyms: .tmp_map$(last_kallsyms) | ||
698 | |||
699 | .tmp_map%: .tmp_busybox% FORCE | ||
700 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ | ||
701 | |||
702 | .tmp_map3: .tmp_map2 | ||
703 | |||
704 | .tmp_map2: .tmp_map1 | ||
705 | |||
706 | endif # ifdef CONFIG_KALLSYMS | ||
707 | |||
708 | # busybox image - including updated kernel symbols | ||
709 | busybox_unstripped: $(busybox-all) FORCE | ||
710 | $(call if_changed_rule,busybox__) | ||
711 | $(Q)rm -f .old_version | ||
712 | |||
713 | busybox: busybox_unstripped | ||
714 | niro | 816 | ifeq ($(SKIP_STRIP),y) |
715 | $(Q)cp $< $@ | ||
716 | else | ||
717 | niro | 532 | $(Q)$(STRIP) -s --remove-section=.note --remove-section=.comment \ |
718 | busybox_unstripped -o $@ | ||
719 | niro | 816 | # strip is confused by PIE executable and does not set exec bits |
720 | $(Q)chmod a+x $@ | ||
721 | endif | ||
722 | niro | 532 | |
723 | # The actual objects are generated when descending, | ||
724 | # make sure no implicit rule kicks in | ||
725 | $(sort $(busybox-all)): $(busybox-dirs) ; | ||
726 | |||
727 | # Handle descending into subdirectories listed in $(busybox-dirs) | ||
728 | # Preset locale variables to speed up the build process. Limit locale | ||
729 | # tweaks to this spot to avoid wrong language settings when running | ||
730 | # make menuconfig etc. | ||
731 | # Error messages still appears in the original language | ||
732 | |||
733 | PHONY += $(busybox-dirs) | ||
734 | $(busybox-dirs): prepare scripts | ||
735 | $(Q)$(MAKE) $(build)=$@ | ||
736 | |||
737 | # Build the kernel release string | ||
738 | # The KERNELRELEASE is stored in a file named .kernelrelease | ||
739 | # to be used when executing for example make install or make modules_install | ||
740 | # | ||
741 | # Take the contents of any files called localversion* and the config | ||
742 | # variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. | ||
743 | # LOCALVERSION from the command line override all of this | ||
744 | |||
745 | nullstring := | ||
746 | space := $(nullstring) # end of line | ||
747 | |||
748 | ___localver = $(objtree)/localversion* $(srctree)/localversion* | ||
749 | __localver = $(sort $(wildcard $(___localver))) | ||
750 | # skip backup files (containing '~') | ||
751 | _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f))) | ||
752 | |||
753 | localver = $(subst $(space),, \ | ||
754 | $(shell cat /dev/null $(_localver)) \ | ||
755 | $(patsubst "%",%,$(CONFIG_LOCALVERSION))) | ||
756 | |||
757 | # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called | ||
758 | # and if the SCM is know a tag from the SCM is appended. | ||
759 | # The appended tag is determinded by the SCM used. | ||
760 | # | ||
761 | # Currently, only git is supported. | ||
762 | # Other SCMs can edit scripts/setlocalversion and add the appropriate | ||
763 | # checks as needed. | ||
764 | niro | 816 | ifdef _BB_DISABLED_CONFIG_LOCALVERSION_AUTO |
765 | niro | 532 | _localver-auto = $(shell $(CONFIG_SHELL) \ |
766 | $(srctree)/scripts/setlocalversion $(srctree)) | ||
767 | localver-auto = $(LOCALVERSION)$(_localver-auto) | ||
768 | endif | ||
769 | |||
770 | localver-full = $(localver)$(localver-auto) | ||
771 | |||
772 | # Store (new) KERNELRELASE string in .kernelrelease | ||
773 | kernelrelease = $(KERNELVERSION)$(localver-full) | ||
774 | .kernelrelease: FORCE | ||
775 | $(Q)rm -f $@ | ||
776 | $(Q)echo $(kernelrelease) > $@ | ||
777 | |||
778 | |||
779 | # Things we need to do before we recursively start building the kernel | ||
780 | # or the modules are listed in "prepare". | ||
781 | # A multi level approach is used. prepareN is processed before prepareN-1. | ||
782 | # archprepare is used in arch Makefiles and when processed asm symlink, | ||
783 | # version.h and scripts_basic is processed / created. | ||
784 | |||
785 | # Listed in dependency order | ||
786 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 | ||
787 | |||
788 | # prepare-all is deprecated, use prepare as valid replacement | ||
789 | PHONY += prepare-all | ||
790 | |||
791 | # prepare3 is used to check if we are building in a separate output directory, | ||
792 | # and if so do: | ||
793 | # 1) Check that make has not been executed in the kernel src $(srctree) | ||
794 | # 2) Create the include2 directory, used for the second asm symlink | ||
795 | prepare3: .kernelrelease | ||
796 | ifneq ($(KBUILD_SRC),) | ||
797 | niro | 816 | @echo ' Using $(srctree) as source for busybox' |
798 | niro | 532 | $(Q)if [ -f $(srctree)/.config ]; then \ |
799 | echo " $(srctree) is not clean, please run 'make mrproper'";\ | ||
800 | echo " in the '$(srctree)' directory.";\ | ||
801 | /bin/false; \ | ||
802 | fi; | ||
803 | $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; | ||
804 | $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm | ||
805 | endif | ||
806 | |||
807 | # prepare2 creates a makefile if using a separate output directory | ||
808 | prepare2: prepare3 outputmakefile | ||
809 | |||
810 | prepare1: prepare2 include/config/MARKER | ||
811 | ifneq ($(KBUILD_MODULES),) | ||
812 | $(Q)mkdir -p $(MODVERDIR) | ||
813 | $(Q)rm -f $(MODVERDIR)/* | ||
814 | endif | ||
815 | |||
816 | niro | 984 | archprepare: prepare1 scripts_basic applets_dir |
817 | niro | 532 | |
818 | prepare0: archprepare FORCE | ||
819 | $(Q)$(MAKE) $(build)=. | ||
820 | |||
821 | # All the preparing.. | ||
822 | prepare prepare-all: prepare0 | ||
823 | |||
824 | # Leave this as default for preprocessing busybox.lds.S, which is now | ||
825 | # done in arch/$(ARCH)/kernel/Makefile | ||
826 | |||
827 | export CPPFLAGS_busybox.lds += -P -C -U$(ARCH) | ||
828 | |||
829 | # FIXME: The asm symlink changes when $(ARCH) changes. That's | ||
830 | # hard to detect, but I suppose "make mrproper" is a good idea | ||
831 | # before switching between archs anyway. | ||
832 | |||
833 | #bbox# include/asm: | ||
834 | #bbox# @echo ' SYMLINK $@ -> include/asm-$(ARCH)' | ||
835 | #bbox# $(Q)if [ ! -d include ]; then mkdir -p include; fi; | ||
836 | #bbox# @ln -fsn asm-$(ARCH) $@ | ||
837 | |||
838 | # Split autoconf.h into include/linux/config/* | ||
839 | quiet_cmd_gen_bbconfigopts = GEN include/bbconfigopts.h | ||
840 | cmd_gen_bbconfigopts = $(srctree)/scripts/mkconfigs > include/bbconfigopts.h | ||
841 | quiet_cmd_split_autoconf = SPLIT include/autoconf.h -> include/config/* | ||
842 | cmd_split_autoconf = scripts/basic/split-include include/autoconf.h include/config | ||
843 | #bbox# piggybacked generation of few .h files | ||
844 | include/config/MARKER: scripts/basic/split-include include/autoconf.h | ||
845 | $(call cmd,split_autoconf) | ||
846 | $(call cmd,gen_bbconfigopts) | ||
847 | @touch $@ | ||
848 | |||
849 | # Generate some files | ||
850 | # --------------------------------------------------------------------------- | ||
851 | |||
852 | # KERNELRELEASE can change from a few different places, meaning version.h | ||
853 | # needs to be updated, so this check is forced on all builds | ||
854 | |||
855 | uts_len := 64 | ||
856 | |||
857 | define filechk_version.h | ||
858 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ | ||
859 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ | ||
860 | exit 1; \ | ||
861 | fi; \ | ||
862 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \ | ||
863 | echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \ | ||
864 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \ | ||
865 | ) | ||
866 | endef | ||
867 | |||
868 | # --------------------------------------------------------------------------- | ||
869 | |||
870 | PHONY += depend dep | ||
871 | depend dep: | ||
872 | @echo '*** Warning: make $@ is unnecessary now.' | ||
873 | |||
874 | # --------------------------------------------------------------------------- | ||
875 | # Modules | ||
876 | |||
877 | niro | 816 | ifdef _BB_DISABLED_CONFIG_MODULES |
878 | niro | 532 | |
879 | # By default, build modules as well | ||
880 | |||
881 | all: modules | ||
882 | |||
883 | # Build modules | ||
884 | |||
885 | PHONY += modules | ||
886 | modules: $(busybox-dirs) $(if $(KBUILD_BUILTIN),busybox) | ||
887 | @echo ' Building modules, stage 2.'; | ||
888 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost | ||
889 | |||
890 | |||
891 | # Target to prepare building external modules | ||
892 | PHONY += modules_prepare | ||
893 | modules_prepare: prepare scripts | ||
894 | |||
895 | # Target to install modules | ||
896 | PHONY += modules_install | ||
897 | modules_install: _modinst_ _modinst_post | ||
898 | |||
899 | PHONY += _modinst_ | ||
900 | _modinst_: | ||
901 | @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ | ||
902 | echo "Warning: you may need to install module-init-tools"; \ | ||
903 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ | ||
904 | sleep 1; \ | ||
905 | fi | ||
906 | @rm -rf $(MODLIB)/kernel | ||
907 | @rm -f $(MODLIB)/source | ||
908 | @mkdir -p $(MODLIB)/kernel | ||
909 | @ln -s $(srctree) $(MODLIB)/source | ||
910 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ | ||
911 | rm -f $(MODLIB)/build ; \ | ||
912 | ln -s $(objtree) $(MODLIB)/build ; \ | ||
913 | fi | ||
914 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst | ||
915 | |||
916 | # If System.map exists, run depmod. This deliberately does not have a | ||
917 | # dependency on System.map since that would run the dependency tree on | ||
918 | # busybox. This depmod is only for convenience to give the initial | ||
919 | # boot a modules.dep even before / is mounted read-write. However the | ||
920 | # boot script depmod is the master version. | ||
921 | ifeq "$(strip $(INSTALL_MOD_PATH))" "" | ||
922 | depmod_opts := | ||
923 | else | ||
924 | depmod_opts := -b $(INSTALL_MOD_PATH) -r | ||
925 | endif | ||
926 | PHONY += _modinst_post | ||
927 | _modinst_post: _modinst_ | ||
928 | if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi | ||
929 | |||
930 | else # CONFIG_MODULES | ||
931 | |||
932 | # Modules not configured | ||
933 | # --------------------------------------------------------------------------- | ||
934 | |||
935 | modules modules_install: FORCE | ||
936 | @echo | ||
937 | @echo "The present busybox configuration has modules disabled." | ||
938 | @echo "Type 'make config' and enable loadable module support." | ||
939 | @echo "Then build a kernel with module support enabled." | ||
940 | @echo | ||
941 | @exit 1 | ||
942 | |||
943 | endif # CONFIG_MODULES | ||
944 | |||
945 | ### | ||
946 | # Cleaning is done on three levels. | ||
947 | # make clean Delete most generated files | ||
948 | # Leave enough to build external modules | ||
949 | # make mrproper Delete the current configuration, and all generated files | ||
950 | # make distclean Remove editor backup files, patch leftover files and the like | ||
951 | |||
952 | # Directories & files removed with 'make clean' | ||
953 | niro | 816 | CLEAN_DIRS += $(MODVERDIR) _install 0_lib |
954 | CLEAN_FILES += busybox busybox_unstripped* busybox.links \ | ||
955 | System.map .kernelrelease \ | ||
956 | niro | 532 | .tmp_kallsyms* .tmp_version .tmp_busybox* .tmp_System.map |
957 | |||
958 | # Directories & files removed with 'make mrproper' | ||
959 | MRPROPER_DIRS += include/config include2 | ||
960 | MRPROPER_FILES += .config .config.old include/asm .version .old_version \ | ||
961 | include/autoconf.h \ | ||
962 | include/bbconfigopts.h \ | ||
963 | include/usage_compressed.h \ | ||
964 | niro | 816 | include/applet_tables.h \ |
965 | applets/usage \ | ||
966 | .kernelrelease Module.symvers tags TAGS cscope* \ | ||
967 | busybox_old | ||
968 | niro | 532 | |
969 | # clean - Delete most, but leave enough to build external modules | ||
970 | # | ||
971 | clean: rm-dirs := $(CLEAN_DIRS) | ||
972 | clean: rm-files := $(CLEAN_FILES) | ||
973 | clean-dirs := $(addprefix _clean_,$(srctree) $(busybox-alldirs)) | ||
974 | |||
975 | PHONY += $(clean-dirs) clean archclean | ||
976 | $(clean-dirs): | ||
977 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | ||
978 | |||
979 | clean: archclean $(clean-dirs) | ||
980 | $(call cmd,rmdirs) | ||
981 | $(call cmd,rmfiles) | ||
982 | @find . $(RCS_FIND_IGNORE) \ | ||
983 | niro | 816 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
984 | niro | 532 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ |
985 | -type f -print | xargs rm -f | ||
986 | |||
987 | niro | 816 | PHONY += doc-clean |
988 | doc-clean: rm-files := docs/busybox.pod \ | ||
989 | docs/BusyBox.html docs/BusyBox.1 docs/BusyBox.txt | ||
990 | doc-clean: | ||
991 | $(call cmd,rmfiles) | ||
992 | |||
993 | niro | 532 | # mrproper - Delete all generated files, including .config |
994 | # | ||
995 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) | ||
996 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) | ||
997 | mrproper-dirs := $(addprefix _mrproper_,scripts) | ||
998 | |||
999 | PHONY += $(mrproper-dirs) mrproper archmrproper | ||
1000 | $(mrproper-dirs): | ||
1001 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) | ||
1002 | |||
1003 | mrproper: clean archmrproper $(mrproper-dirs) | ||
1004 | $(call cmd,rmdirs) | ||
1005 | $(call cmd,rmfiles) | ||
1006 | niro | 1123 | @find -name Config.src | sed 's/.src$$/.in/' | xargs -r rm -f |
1007 | @find -name Kbuild.src | sed 's/.src$$//' | xargs -r rm -f | ||
1008 | niro | 532 | |
1009 | # distclean | ||
1010 | # | ||
1011 | PHONY += distclean | ||
1012 | |||
1013 | distclean: mrproper | ||
1014 | @find $(srctree) $(RCS_FIND_IGNORE) \ | ||
1015 | niro | 816 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1016 | niro | 532 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
1017 | niro | 816 | -o -name '.*.rej' -o -name '*.tmp' -o -size 0 \ |
1018 | niro | 532 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
1019 | -type f -print | xargs rm -f | ||
1020 | |||
1021 | |||
1022 | # Packaging of the kernel to various formats | ||
1023 | # --------------------------------------------------------------------------- | ||
1024 | # rpm target kept for backward compatibility | ||
1025 | package-dir := $(srctree)/scripts/package | ||
1026 | |||
1027 | %pkg: FORCE | ||
1028 | $(Q)$(MAKE) $(build)=$(package-dir) $@ | ||
1029 | rpm: FORCE | ||
1030 | $(Q)$(MAKE) $(build)=$(package-dir) $@ | ||
1031 | |||
1032 | |||
1033 | # Brief documentation of the typical targets used | ||
1034 | # --------------------------------------------------------------------------- | ||
1035 | |||
1036 | boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) | ||
1037 | boards := $(notdir $(boards)) | ||
1038 | |||
1039 | -include $(srctree)/Makefile.help | ||
1040 | |||
1041 | # Documentation targets | ||
1042 | # --------------------------------------------------------------------------- | ||
1043 | %docs: scripts_basic FORCE | ||
1044 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ | ||
1045 | |||
1046 | else # KBUILD_EXTMOD | ||
1047 | |||
1048 | ### | ||
1049 | # External module support. | ||
1050 | # When building external modules the kernel used as basis is considered | ||
1051 | # read-only, and no consistency checks are made and the make | ||
1052 | # system is not used on the basis kernel. If updates are required | ||
1053 | # in the basis kernel ordinary make commands (without M=...) must | ||
1054 | # be used. | ||
1055 | # | ||
1056 | # The following are the only valid targets when building external | ||
1057 | # modules. | ||
1058 | # make M=dir clean Delete all automatically generated files | ||
1059 | # make M=dir modules Make all modules in specified dir | ||
1060 | # make M=dir Same as 'make M=dir modules' | ||
1061 | # make M=dir modules_install | ||
1062 | # Install the modules build in the module directory | ||
1063 | # Assumes install directory is already created | ||
1064 | |||
1065 | # We are always building modules | ||
1066 | KBUILD_MODULES := 1 | ||
1067 | PHONY += crmodverdir | ||
1068 | crmodverdir: | ||
1069 | $(Q)mkdir -p $(MODVERDIR) | ||
1070 | $(Q)rm -f $(MODVERDIR)/* | ||
1071 | |||
1072 | PHONY += $(objtree)/Module.symvers | ||
1073 | $(objtree)/Module.symvers: | ||
1074 | @test -e $(objtree)/Module.symvers || ( \ | ||
1075 | echo; \ | ||
1076 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ | ||
1077 | echo " is missing; modules will have no dependencies and modversions."; \ | ||
1078 | echo ) | ||
1079 | |||
1080 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) | ||
1081 | PHONY += $(module-dirs) modules | ||
1082 | $(module-dirs): crmodverdir $(objtree)/Module.symvers | ||
1083 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) | ||
1084 | |||
1085 | modules: $(module-dirs) | ||
1086 | @echo ' Building modules, stage 2.'; | ||
1087 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost | ||
1088 | |||
1089 | PHONY += modules_install | ||
1090 | modules_install: _emodinst_ _emodinst_post | ||
1091 | |||
1092 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) | ||
1093 | PHONY += _emodinst_ | ||
1094 | _emodinst_: | ||
1095 | $(Q)mkdir -p $(MODLIB)/$(install-dir) | ||
1096 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst | ||
1097 | |||
1098 | # Run depmod only is we have System.map and depmod is executable | ||
1099 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) | ||
1100 | cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \ | ||
1101 | $(DEPMOD) -ae -F System.map \ | ||
1102 | $(if $(strip $(INSTALL_MOD_PATH)), \ | ||
1103 | -b $(INSTALL_MOD_PATH) -r) \ | ||
1104 | $(KERNELRELEASE); \ | ||
1105 | fi | ||
1106 | |||
1107 | PHONY += _emodinst_post | ||
1108 | _emodinst_post: _emodinst_ | ||
1109 | $(call cmd,depmod) | ||
1110 | |||
1111 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) | ||
1112 | |||
1113 | PHONY += $(clean-dirs) clean | ||
1114 | $(clean-dirs): | ||
1115 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | ||
1116 | |||
1117 | clean: rm-dirs := $(MODVERDIR) | ||
1118 | clean: $(clean-dirs) | ||
1119 | $(call cmd,rmdirs) | ||
1120 | @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ | ||
1121 | niro | 816 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
1122 | niro | 532 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ |
1123 | -type f -print | xargs rm -f | ||
1124 | |||
1125 | help: | ||
1126 | @echo ' Building external modules.' | ||
1127 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' | ||
1128 | @echo '' | ||
1129 | @echo ' modules - default target, build the module(s)' | ||
1130 | @echo ' modules_install - install the module' | ||
1131 | @echo ' clean - remove generated files in module directory only' | ||
1132 | @echo '' | ||
1133 | |||
1134 | # Dummies... | ||
1135 | PHONY += prepare scripts | ||
1136 | prepare: ; | ||
1137 | scripts: ; | ||
1138 | endif # KBUILD_EXTMOD | ||
1139 | |||
1140 | # Generate tags for editors | ||
1141 | # --------------------------------------------------------------------------- | ||
1142 | |||
1143 | #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set | ||
1144 | #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file. | ||
1145 | #Adding $(srctree) adds about 20M on i386 to the size of the output file! | ||
1146 | |||
1147 | ifeq ($(src),$(obj)) | ||
1148 | __srctree = | ||
1149 | else | ||
1150 | __srctree = $(srctree)/ | ||
1151 | endif | ||
1152 | |||
1153 | ifeq ($(ALLSOURCE_ARCHS),) | ||
1154 | ifeq ($(ARCH),um) | ||
1155 | ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH) | ||
1156 | else | ||
1157 | ALLINCLUDE_ARCHS := $(ARCH) | ||
1158 | endif | ||
1159 | else | ||
1160 | #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour. | ||
1161 | ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS) | ||
1162 | endif | ||
1163 | |||
1164 | ALLSOURCE_ARCHS := $(ARCH) | ||
1165 | |||
1166 | define all-sources | ||
1167 | ( find $(__srctree) $(RCS_FIND_IGNORE) \ | ||
1168 | \( -name include -o -name arch \) -prune -o \ | ||
1169 | -name '*.[chS]' -print; \ | ||
1170 | for ARCH in $(ALLSOURCE_ARCHS) ; do \ | ||
1171 | find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \ | ||
1172 | -name '*.[chS]' -print; \ | ||
1173 | done ; \ | ||
1174 | find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \ | ||
1175 | -name '*.[chS]' -print; \ | ||
1176 | find $(__srctree)include $(RCS_FIND_IGNORE) \ | ||
1177 | \( -name config -o -name 'asm-*' \) -prune \ | ||
1178 | -o -name '*.[chS]' -print; \ | ||
1179 | for ARCH in $(ALLINCLUDE_ARCHS) ; do \ | ||
1180 | find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \ | ||
1181 | -name '*.[chS]' -print; \ | ||
1182 | done ; \ | ||
1183 | find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ | ||
1184 | -name '*.[chS]' -print ) | ||
1185 | endef | ||
1186 | |||
1187 | quiet_cmd_cscope-file = FILELST cscope.files | ||
1188 | cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files | ||
1189 | |||
1190 | quiet_cmd_cscope = MAKE cscope.out | ||
1191 | cmd_cscope = cscope -b | ||
1192 | |||
1193 | cscope: FORCE | ||
1194 | $(call cmd,cscope-file) | ||
1195 | $(call cmd,cscope) | ||
1196 | |||
1197 | quiet_cmd_TAGS = MAKE $@ | ||
1198 | define cmd_TAGS | ||
1199 | rm -f $@; \ | ||
1200 | ETAGSF=`etags --version | grep -i exuberant >/dev/null && \ | ||
1201 | echo "-I __initdata,__exitdata,__acquires,__releases \ | ||
1202 | -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ | ||
1203 | --extra=+f --c-kinds=+px"`; \ | ||
1204 | $(all-sources) | xargs etags $$ETAGSF -a | ||
1205 | endef | ||
1206 | |||
1207 | TAGS: FORCE | ||
1208 | $(call cmd,TAGS) | ||
1209 | |||
1210 | |||
1211 | quiet_cmd_tags = MAKE $@ | ||
1212 | define cmd_tags | ||
1213 | rm -f $@; \ | ||
1214 | CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \ | ||
1215 | echo "-I __initdata,__exitdata,__acquires,__releases \ | ||
1216 | -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ | ||
1217 | --extra=+f --c-kinds=+px"`; \ | ||
1218 | $(all-sources) | xargs ctags $$CTAGSF -a | ||
1219 | endef | ||
1220 | |||
1221 | tags: FORCE | ||
1222 | $(call cmd,tags) | ||
1223 | |||
1224 | |||
1225 | # Scripts to check various things for consistency | ||
1226 | # --------------------------------------------------------------------------- | ||
1227 | |||
1228 | includecheck: | ||
1229 | find * $(RCS_FIND_IGNORE) \ | ||
1230 | -name '*.[hcS]' -type f -print | sort \ | ||
1231 | | xargs $(PERL) -w scripts/checkincludes.pl | ||
1232 | |||
1233 | versioncheck: | ||
1234 | find * $(RCS_FIND_IGNORE) \ | ||
1235 | -name '*.[hcS]' -type f -print | sort \ | ||
1236 | | xargs $(PERL) -w scripts/checkversion.pl | ||
1237 | |||
1238 | namespacecheck: | ||
1239 | $(PERL) $(srctree)/scripts/namespace.pl | ||
1240 | |||
1241 | endif #ifeq ($(config-targets),1) | ||
1242 | endif #ifeq ($(mixed-targets),1) | ||
1243 | |||
1244 | PHONY += checkstack | ||
1245 | checkstack: | ||
1246 | $(OBJDUMP) -d busybox $$(find . -name '*.ko') | \ | ||
1247 | $(PERL) $(src)/scripts/checkstack.pl $(ARCH) | ||
1248 | |||
1249 | kernelrelease: | ||
1250 | $(if $(wildcard .kernelrelease), $(Q)echo $(KERNELRELEASE), \ | ||
1251 | $(error kernelrelease not valid - run 'make *config' to update it)) | ||
1252 | kernelversion: | ||
1253 | @echo $(KERNELVERSION) | ||
1254 | |||
1255 | # Single targets | ||
1256 | # --------------------------------------------------------------------------- | ||
1257 | # Single targets are compatible with: | ||
1258 | # - build whith mixed source and output | ||
1259 | # - build with separate output dir 'make O=...' | ||
1260 | # - external modules | ||
1261 | # | ||
1262 | # target-dir => where to store outputfile | ||
1263 | # build-dir => directory in kernel source tree to use | ||
1264 | |||
1265 | ifeq ($(KBUILD_EXTMOD),) | ||
1266 | build-dir = $(patsubst %/,%,$(dir $@)) | ||
1267 | target-dir = $(dir $@) | ||
1268 | else | ||
1269 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) | ||
1270 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) | ||
1271 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) | ||
1272 | endif | ||
1273 | |||
1274 | %.s: %.c prepare scripts FORCE | ||
1275 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | ||
1276 | %.i: %.c prepare scripts FORCE | ||
1277 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | ||
1278 | %.o: %.c prepare scripts FORCE | ||
1279 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | ||
1280 | %.lst: %.c prepare scripts FORCE | ||
1281 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | ||
1282 | %.s: %.S prepare scripts FORCE | ||
1283 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | ||
1284 | %.o: %.S prepare scripts FORCE | ||
1285 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | ||
1286 | |||
1287 | # Modules | ||
1288 | / %/: prepare scripts FORCE | ||
1289 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ | ||
1290 | $(build)=$(build-dir) | ||
1291 | %.ko: prepare scripts FORCE | ||
1292 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ | ||
1293 | $(build)=$(build-dir) $(@:.ko=.o) | ||
1294 | $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost | ||
1295 | |||
1296 | # FIXME Should go into a make.lib or something | ||
1297 | # =========================================================================== | ||
1298 | |||
1299 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) | ||
1300 | cmd_rmdirs = rm -rf $(rm-dirs) | ||
1301 | |||
1302 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) | ||
1303 | cmd_rmfiles = rm -f $(rm-files) | ||
1304 | |||
1305 | |||
1306 | a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \ | ||
1307 | $(NOSTDINC_FLAGS) $(CPPFLAGS) \ | ||
1308 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o) | ||
1309 | |||
1310 | quiet_cmd_as_o_S = AS $@ | ||
1311 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< | ||
1312 | |||
1313 | # read all saved command lines | ||
1314 | |||
1315 | targets := $(wildcard $(sort $(targets))) | ||
1316 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | ||
1317 | |||
1318 | ifneq ($(cmd_files),) | ||
1319 | $(cmd_files): ; # Do not try to update included dependency files | ||
1320 | include $(cmd_files) | ||
1321 | endif | ||
1322 | |||
1323 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir | ||
1324 | # Usage: | ||
1325 | # $(Q)$(MAKE) $(clean)=dir | ||
1326 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj | ||
1327 | |||
1328 | endif # skip-makefile | ||
1329 | |||
1330 | PHONY += FORCE | ||
1331 | FORCE: | ||
1332 | |||
1333 | -include $(srctree)/Makefile.custom | ||
1334 | |||
1335 | # Declare the contents of the .PHONY variable as phony. We keep that | ||
1336 | # information in a variable se we can use it in if_changed and friends. | ||
1337 | .PHONY: $(PHONY) |