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1da177e4 LT |
1 | VERSION = 2 |
2 | PATCHLEVEL = 6 | |
39403865 | 3 | SUBLEVEL = 22 |
7dcca30a | 4 | EXTRAVERSION = |
188e1f81 | 5 | NAME = Holy Dancing Manatees, Batman! |
1da177e4 LT |
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 | ||
15964864 OV |
13 | # Do not: |
14 | # o use make's built-in rules and variables | |
15 | # (this increases performance and avoid hard-to-debug behavour); | |
16 | # o print "Entering directory ..."; | |
17 | MAKEFLAGS += -rR --no-print-directory | |
1da177e4 LT |
18 | |
19 | # We are using a recursive build, so we need to do a little thinking | |
20 | # to get the ordering right. | |
21 | # | |
22 | # Most importantly: sub-Makefiles should only ever modify files in | |
23 | # their own directory. If in some directory we have a dependency on | |
24 | # a file in another dir (which doesn't happen often, but it's often | |
25 | # unavoidable when linking the built-in.o targets which finally | |
26 | # turn into vmlinux), we will call a sub make in that other dir, and | |
27 | # after that we are sure that everything which is in that other dir | |
28 | # is now up to date. | |
29 | # | |
30 | # The only cases where we need to modify files which have global | |
31 | # effects are thus separated out and done before the recursive | |
32 | # descending is started. They are now explicitly listed as the | |
33 | # prepare rule. | |
34 | ||
35 | # To put more focus on warnings, be less verbose as default | |
36 | # Use 'make V=1' to see the full commands | |
37 | ||
38 | ifdef V | |
39 | ifeq ("$(origin V)", "command line") | |
40 | KBUILD_VERBOSE = $(V) | |
41 | endif | |
42 | endif | |
43 | ifndef KBUILD_VERBOSE | |
44 | KBUILD_VERBOSE = 0 | |
45 | endif | |
46 | ||
1c7bafe7 RD |
47 | # Call a source code checker (by default, "sparse") as part of the |
48 | # C compilation. | |
49 | # | |
50 | # Use 'make C=1' to enable checking of only re-compiled files. | |
51 | # Use 'make C=2' to enable checking of *all* source files, regardless | |
52 | # of whether they are re-compiled or not. | |
53 | # | |
54 | # See the file "Documentation/sparse.txt" for more details, including | |
55 | # where to get the "sparse" utility. | |
1da177e4 LT |
56 | |
57 | ifdef C | |
58 | ifeq ("$(origin C)", "command line") | |
59 | KBUILD_CHECKSRC = $(C) | |
60 | endif | |
61 | endif | |
62 | ifndef KBUILD_CHECKSRC | |
63 | KBUILD_CHECKSRC = 0 | |
64 | endif | |
65 | ||
66 | # Use make M=dir to specify directory of external module to build | |
67 | # Old syntax make ... SUBDIRS=$PWD is still supported | |
68 | # Setting the environment variable KBUILD_EXTMOD take precedence | |
69 | ifdef SUBDIRS | |
70 | KBUILD_EXTMOD ?= $(SUBDIRS) | |
71 | endif | |
72 | ifdef M | |
73 | ifeq ("$(origin M)", "command line") | |
74 | KBUILD_EXTMOD := $(M) | |
75 | endif | |
76 | endif | |
77 | ||
78 | ||
79 | # kbuild supports saving output files in a separate directory. | |
80 | # To locate output files in a separate directory two syntaxes are supported. | |
81 | # In both cases the working directory must be the root of the kernel src. | |
82 | # 1) O= | |
83 | # Use "make O=dir/to/store/output/files/" | |
070b98bf | 84 | # |
1da177e4 LT |
85 | # 2) Set KBUILD_OUTPUT |
86 | # Set the environment variable KBUILD_OUTPUT to point to the directory | |
87 | # where the output files shall be placed. | |
88 | # export KBUILD_OUTPUT=dir/to/store/output/files/ | |
89 | # make | |
90 | # | |
91 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment | |
92 | # variable. | |
93 | ||
94 | ||
95 | # KBUILD_SRC is set on invocation of make in OBJ directory | |
96 | # KBUILD_SRC is not intended to be used by the regular user (for now) | |
97 | ifeq ($(KBUILD_SRC),) | |
98 | ||
99 | # OK, Make called in directory where kernel src resides | |
100 | # Do we want to locate output files in a separate directory? | |
101 | ifdef O | |
102 | ifeq ("$(origin O)", "command line") | |
103 | KBUILD_OUTPUT := $(O) | |
104 | endif | |
105 | endif | |
106 | ||
107 | # That's our default target when none is given on the command line | |
4f193362 | 108 | PHONY := _all |
1da177e4 LT |
109 | _all: |
110 | ||
111 | ifneq ($(KBUILD_OUTPUT),) | |
112 | # Invoke a second make in the output directory, passing relevant variables | |
113 | # check that the output directory actually exists | |
114 | saved-output := $(KBUILD_OUTPUT) | |
115 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) | |
116 | $(if $(KBUILD_OUTPUT),, \ | |
117 | $(error output directory "$(saved-output)" does not exist)) | |
118 | ||
4f193362 | 119 | PHONY += $(MAKECMDGOALS) |
1da177e4 | 120 | |
36cbbe5e | 121 | $(filter-out _all,$(MAKECMDGOALS)) _all: |
23a45e2c SR |
122 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
123 | KBUILD_SRC=$(CURDIR) \ | |
36cbbe5e | 124 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@ |
1da177e4 LT |
125 | |
126 | # Leave processing to above invocation of make | |
127 | skip-makefile := 1 | |
128 | endif # ifneq ($(KBUILD_OUTPUT),) | |
129 | endif # ifeq ($(KBUILD_SRC),) | |
130 | ||
131 | # We process the rest of the Makefile if this is the final invocation of make | |
132 | ifeq ($(skip-makefile),) | |
133 | ||
134 | # If building an external module we do not care about the all: rule | |
135 | # but instead _all depend on modules | |
4f193362 | 136 | PHONY += all |
1da177e4 LT |
137 | ifeq ($(KBUILD_EXTMOD),) |
138 | _all: all | |
139 | else | |
140 | _all: modules | |
141 | endif | |
142 | ||
143 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) | |
144 | TOPDIR := $(srctree) | |
145 | # FIXME - TOPDIR is obsolete, use srctree/objtree | |
146 | objtree := $(CURDIR) | |
147 | src := $(srctree) | |
148 | obj := $(objtree) | |
149 | ||
0f558c33 | 150 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
1da177e4 LT |
151 | |
152 | export srctree objtree VPATH TOPDIR | |
153 | ||
1da177e4 LT |
154 | |
155 | # SUBARCH tells the usermode build what the underlying arch is. That is set | |
156 | # first, and if a usermode build is happening, the "ARCH=um" on the command | |
157 | # line overrides the setting of ARCH below. If a native build is happening, | |
158 | # then ARCH is assigned, getting whatever value it gets normally, and | |
159 | # SUBARCH is subsequently ignored. | |
160 | ||
161 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ | |
162 | -e s/arm.*/arm/ -e s/sa110/arm/ \ | |
39990b5e | 163 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
8999257c | 164 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ ) |
1da177e4 LT |
165 | |
166 | # Cross compiling and selecting different set of gcc/bin-utils | |
167 | # --------------------------------------------------------------------------- | |
168 | # | |
169 | # When performing cross compilation for other architectures ARCH shall be set | |
170 | # to the target architecture. (See arch/* for the possibilities). | |
171 | # ARCH can be set during invocation of make: | |
172 | # make ARCH=ia64 | |
173 | # Another way is to have ARCH set in the environment. | |
174 | # The default ARCH is the host where make is executed. | |
175 | ||
176 | # CROSS_COMPILE specify the prefix used for all executables used | |
177 | # during compilation. Only gcc and related bin-utils executables | |
178 | # are prefixed with $(CROSS_COMPILE). | |
179 | # CROSS_COMPILE can be set on the command line | |
180 | # make CROSS_COMPILE=ia64-linux- | |
181 | # Alternatively CROSS_COMPILE can be set in the environment. | |
182 | # Default value for CROSS_COMPILE is not to prefix executables | |
183 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile | |
184 | ||
185 | ARCH ?= $(SUBARCH) | |
186 | CROSS_COMPILE ?= | |
187 | ||
188 | # Architecture as present in compile.h | |
189 | UTS_MACHINE := $(ARCH) | |
190 | ||
14cdd3c4 RZ |
191 | KCONFIG_CONFIG ?= .config |
192 | ||
1da177e4 LT |
193 | # SHELL used by kbuild |
194 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
195 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
196 | else echo sh; fi ; fi) | |
197 | ||
070b98bf SR |
198 | HOSTCC = gcc |
199 | HOSTCXX = g++ | |
200 | HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer | |
201 | HOSTCXXFLAGS = -O2 | |
1da177e4 | 202 | |
070b98bf SR |
203 | # Decide whether to build built-in, modular, or both. |
204 | # Normally, just do built-in. | |
1da177e4 LT |
205 | |
206 | KBUILD_MODULES := | |
207 | KBUILD_BUILTIN := 1 | |
208 | ||
209 | # If we have only "make modules", don't compile built-in objects. | |
210 | # When we're building modules with modversions, we need to consider | |
211 | # the built-in objects during the descend as well, in order to | |
070b98bf | 212 | # make sure the checksums are up to date before we record them. |
1da177e4 LT |
213 | |
214 | ifeq ($(MAKECMDGOALS),modules) | |
215 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) | |
216 | endif | |
217 | ||
218 | # If we have "make <whatever> modules", compile modules | |
219 | # in addition to whatever we do anyway. | |
220 | # Just "make" or "make all" shall build modules as well | |
221 | ||
222 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) | |
223 | KBUILD_MODULES := 1 | |
224 | endif | |
225 | ||
226 | ifeq ($(MAKECMDGOALS),) | |
227 | KBUILD_MODULES := 1 | |
228 | endif | |
229 | ||
e579d351 | 230 | export KBUILD_MODULES KBUILD_BUILTIN |
1da177e4 LT |
231 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
232 | ||
233 | # Beautify output | |
234 | # --------------------------------------------------------------------------- | |
235 | # | |
236 | # Normally, we echo the whole command before executing it. By making | |
237 | # that echo $($(quiet)$(cmd)), we now have the possibility to set | |
238 | # $(quiet) to choose other forms of output instead, e.g. | |
239 | # | |
240 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ | |
241 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | |
242 | # | |
243 | # If $(quiet) is empty, the whole command will be printed. | |
244 | # If it is set to "quiet_", only the short version will be printed. | |
070b98bf | 245 | # If it is set to "silent_", nothing will be printed at all, since |
1da177e4 LT |
246 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
247 | # | |
a58a414f | 248 | # A simple variant is to prefix commands with $(Q) - that's useful |
1da177e4 LT |
249 | # for commands that shall be hidden in non-verbose mode. |
250 | # | |
251 | # $(Q)ln $@ :< | |
252 | # | |
253 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. | |
254 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. | |
255 | ||
256 | ifeq ($(KBUILD_VERBOSE),1) | |
257 | quiet = | |
258 | Q = | |
259 | else | |
260 | quiet=quiet_ | |
261 | Q = @ | |
262 | endif | |
263 | ||
264 | # If the user is running make -s (silent mode), suppress echoing of | |
265 | # commands | |
266 | ||
267 | ifneq ($(findstring s,$(MAKEFLAGS)),) | |
268 | quiet=silent_ | |
269 | endif | |
270 | ||
271 | export quiet Q KBUILD_VERBOSE | |
272 | ||
1da177e4 LT |
273 | |
274 | # Look for make include files relative to root of kernel src | |
275 | MAKEFLAGS += --include-dir=$(srctree) | |
276 | ||
15964864 OV |
277 | # We need some generic definitions. |
278 | include $(srctree)/scripts/Kbuild.include | |
1da177e4 LT |
279 | |
280 | # Make variables (CC, etc...) | |
281 | ||
282 | AS = $(CROSS_COMPILE)as | |
283 | LD = $(CROSS_COMPILE)ld | |
284 | CC = $(CROSS_COMPILE)gcc | |
285 | CPP = $(CC) -E | |
286 | AR = $(CROSS_COMPILE)ar | |
287 | NM = $(CROSS_COMPILE)nm | |
288 | STRIP = $(CROSS_COMPILE)strip | |
289 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
290 | OBJDUMP = $(CROSS_COMPILE)objdump | |
291 | AWK = awk | |
292 | GENKSYMS = scripts/genksyms/genksyms | |
293 | DEPMOD = /sbin/depmod | |
294 | KALLSYMS = scripts/kallsyms | |
295 | PERL = perl | |
296 | CHECK = sparse | |
297 | ||
af4ca457 | 298 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF) |
1da177e4 LT |
299 | MODFLAGS = -DMODULE |
300 | CFLAGS_MODULE = $(MODFLAGS) | |
301 | AFLAGS_MODULE = $(MODFLAGS) | |
302 | LDFLAGS_MODULE = -r | |
303 | CFLAGS_KERNEL = | |
304 | AFLAGS_KERNEL = | |
305 | ||
306 | ||
307 | # Use LINUXINCLUDE when you must reference the include/ directory. | |
308 | # Needed to be compatible with the O= option | |
309 | LINUXINCLUDE := -Iinclude \ | |
2dd34b48 | 310 | $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ |
e623a3b8 | 311 | -include include/linux/autoconf.h |
1da177e4 LT |
312 | |
313 | CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) | |
314 | ||
070b98bf SR |
315 | CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
316 | -fno-strict-aliasing -fno-common | |
317 | AFLAGS := -D__ASSEMBLY__ | |
1da177e4 | 318 | |
f1d28fb0 RZ |
319 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
320 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) | |
2244cbd8 | 321 | KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) |
cb58455c | 322 | |
070b98bf SR |
323 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
324 | export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC | |
325 | export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE | |
326 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS | |
1da177e4 LT |
327 | |
328 | export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS | |
070b98bf | 329 | export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE |
1da177e4 LT |
330 | export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
331 | ||
332 | # When compiling out-of-tree modules, put MODVERDIR in the module | |
333 | # tree rather than in the kernel tree. The kernel tree might | |
334 | # even be read-only. | |
335 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions | |
336 | ||
1da177e4 LT |
337 | # Files to ignore in find ... statements |
338 | ||
406119f4 TM |
339 | 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 |
340 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git | |
1da177e4 LT |
341 | |
342 | # =========================================================================== | |
343 | # Rules shared between *config targets and build targets | |
344 | ||
345 | # Basic helpers built in scripts/ | |
4f193362 | 346 | PHONY += scripts_basic |
1da177e4 LT |
347 | scripts_basic: |
348 | $(Q)$(MAKE) $(build)=scripts/basic | |
349 | ||
cd05e6bd JB |
350 | # To avoid any implicit rule to kick in, define an empty command. |
351 | scripts/basic/%: scripts_basic ; | |
352 | ||
4f193362 | 353 | PHONY += outputmakefile |
fd5f0cd6 JB |
354 | # outputmakefile generates a Makefile in the output directory, if using a |
355 | # separate output directory. This allows convenient use of make in the | |
356 | # output directory. | |
1da177e4 | 357 | outputmakefile: |
fd5f0cd6 JB |
358 | ifneq ($(KBUILD_SRC),) |
359 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ | |
360 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) | |
361 | endif | |
1da177e4 LT |
362 | |
363 | # To make sure we do not include .config for any of the *config targets | |
364 | # catch them early, and hand them over to scripts/kconfig/Makefile | |
365 | # It is allowed to specify more targets when calling make, including | |
366 | # mixing *config targets and build targets. | |
070b98bf | 367 | # For example 'make oldconfig all'. |
1da177e4 LT |
368 | # Detect when mixed targets is specified, and make a second invocation |
369 | # of make so .config is not included in this case either (for *config). | |
370 | ||
3eb3c740 | 371 | no-dot-config-targets := clean mrproper distclean \ |
c30a02e0 | 372 | cscope TAGS tags help %docs check% \ |
3eb3c740 RZ |
373 | include/linux/version.h headers_% \ |
374 | kernelrelease kernelversion | |
1da177e4 LT |
375 | |
376 | config-targets := 0 | |
377 | mixed-targets := 0 | |
378 | dot-config := 1 | |
379 | ||
380 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
381 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
382 | dot-config := 0 | |
383 | endif | |
384 | endif | |
385 | ||
386 | ifeq ($(KBUILD_EXTMOD),) | |
387 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) | |
388 | config-targets := 1 | |
389 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) | |
390 | mixed-targets := 1 | |
391 | endif | |
392 | endif | |
393 | endif | |
394 | ||
395 | ifeq ($(mixed-targets),1) | |
396 | # =========================================================================== | |
397 | # We're called with mixed targets (*config and build targets). | |
398 | # Handle them one by one. | |
399 | ||
400 | %:: FORCE | |
401 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ | |
402 | ||
403 | else | |
404 | ifeq ($(config-targets),1) | |
405 | # =========================================================================== | |
406 | # *config targets only - make sure prerequisites are updated, and descend | |
407 | # in scripts/kconfig to make the *config target | |
408 | ||
409 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. | |
410 | # KBUILD_DEFCONFIG may point out an alternative default configuration | |
411 | # used for 'make defconfig' | |
412 | include $(srctree)/arch/$(ARCH)/Makefile | |
413 | export KBUILD_DEFCONFIG | |
414 | ||
cd05e6bd | 415 | config %config: scripts_basic outputmakefile FORCE |
c955ccaf | 416 | $(Q)mkdir -p include/linux include/config |
1da177e4 LT |
417 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
418 | ||
419 | else | |
420 | # =========================================================================== | |
421 | # Build targets only - this includes vmlinux, arch specific targets, clean | |
422 | # targets and others. In general all targets except *config targets. | |
423 | ||
424 | ifeq ($(KBUILD_EXTMOD),) | |
425 | # Additional helpers built in scripts/ | |
426 | # Carefully list dependencies so we do not try to build scripts twice | |
070b98bf | 427 | # in parallel |
4f193362 | 428 | PHONY += scripts |
2e3646e5 | 429 | scripts: scripts_basic include/config/auto.conf |
1da177e4 LT |
430 | $(Q)$(MAKE) $(build)=$(@) |
431 | ||
1da177e4 LT |
432 | # Objects we will link into vmlinux / subdirs we need to visit |
433 | init-y := init/ | |
434 | drivers-y := drivers/ sound/ | |
435 | net-y := net/ | |
436 | libs-y := lib/ | |
437 | core-y := usr/ | |
438 | endif # KBUILD_EXTMOD | |
439 | ||
440 | ifeq ($(dot-config),1) | |
9ee4e336 SR |
441 | # Read in config |
442 | -include include/config/auto.conf | |
1da177e4 | 443 | |
9ee4e336 | 444 | ifeq ($(KBUILD_EXTMOD),) |
1da177e4 LT |
445 | # Read in dependencies to all Kconfig* files, make sure to run |
446 | # oldconfig if changes are detected. | |
c955ccaf | 447 | -include include/config/auto.conf.cmd |
1da177e4 | 448 | |
1da177e4 | 449 | # To avoid any implicit rule to kick in, define an empty command |
14cdd3c4 | 450 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
1da177e4 | 451 | |
c955ccaf | 452 | # If .config is newer than include/config/auto.conf, someone tinkered |
752625cf | 453 | # with it and forgot to run make oldconfig. |
070b98bf | 454 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
752625cf | 455 | # we execute the config step to be sure to catch updated Kconfig files |
14cdd3c4 | 456 | include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
1da177e4 | 457 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
3041e47e | 458 | else |
9ee4e336 SR |
459 | # external modules needs include/linux/autoconf.h and include/config/auto.conf |
460 | # but do not care if they are up-to-date. Use auto.conf to trigger the test | |
461 | PHONY += include/config/auto.conf | |
462 | ||
463 | include/config/auto.conf: | |
464 | $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \ | |
465 | echo; \ | |
466 | echo " ERROR: Kernel configuration is invalid."; \ | |
467 | echo " include/linux/autoconf.h or $@ are missing."; \ | |
468 | echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ | |
469 | echo; \ | |
470 | /bin/false) | |
471 | ||
472 | endif # KBUILD_EXTMOD | |
c955ccaf | 473 | |
1da177e4 LT |
474 | else |
475 | # Dummy target needed, because used as prerequisite | |
c955ccaf | 476 | include/config/auto.conf: ; |
9ee4e336 | 477 | endif # $(dot-config) |
1da177e4 LT |
478 | |
479 | # The all: target is the default when no target is given on the | |
480 | # command line. | |
481 | # This allow a user to issue only 'make' to build a kernel including modules | |
070b98bf | 482 | # Defaults vmlinux but it is usually overridden in the arch makefile |
1da177e4 LT |
483 | all: vmlinux |
484 | ||
485 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE | |
486 | CFLAGS += -Os | |
487 | else | |
488 | CFLAGS += -O2 | |
489 | endif | |
490 | ||
c9eca0b9 SR |
491 | include $(srctree)/arch/$(ARCH)/Makefile |
492 | ||
1da177e4 | 493 | ifdef CONFIG_FRAME_POINTER |
b4652239 | 494 | CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,) |
1da177e4 LT |
495 | else |
496 | CFLAGS += -fomit-frame-pointer | |
497 | endif | |
498 | ||
499 | ifdef CONFIG_DEBUG_INFO | |
500 | CFLAGS += -g | |
501 | endif | |
502 | ||
c9eca0b9 SR |
503 | # Force gcc to behave correct even for buggy distributions |
504 | CFLAGS += $(call cc-option, -fno-stack-protector) | |
1da177e4 | 505 | |
e8e69931 | 506 | # arch Makefile may override CC so keep this after arch Makefile is included |
e8f5bdb0 | 507 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
e8e69931 SR |
508 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
509 | ||
1da177e4 LT |
510 | # warn about C99 declaration after statement |
511 | CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) | |
512 | ||
070b98bf | 513 | # disable pointer signed / unsigned warnings in gcc 4.0 |
1da177e4 LT |
514 | CFLAGS += $(call cc-option,-Wno-pointer-sign,) |
515 | ||
516 | # Default kernel image to build when no specific target is given. | |
070b98bf | 517 | # KBUILD_IMAGE may be overruled on the command line or |
1da177e4 LT |
518 | # set in the environment |
519 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over | |
520 | # this default value | |
521 | export KBUILD_IMAGE ?= vmlinux | |
522 | ||
523 | # | |
524 | # INSTALL_PATH specifies where to place the updated kernel and system map | |
525 | # images. Default is /boot, but you can set it to other values | |
526 | export INSTALL_PATH ?= /boot | |
527 | ||
528 | # | |
529 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory | |
530 | # relocations required by build roots. This is not defined in the | |
070b98bf | 531 | # makefile but the argument can be passed to make if needed. |
1da177e4 LT |
532 | # |
533 | ||
df9df036 | 534 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4 LT |
535 | export MODLIB |
536 | ||
ac031f26 TT |
537 | # |
538 | # INSTALL_MOD_STRIP, if defined, will cause modules to be | |
539 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then | |
540 | # the default option --strip-debug will be used. Otherwise, | |
541 | # INSTALL_MOD_STRIP will used as the options to the strip command. | |
542 | ||
543 | ifdef INSTALL_MOD_STRIP | |
544 | ifeq ($(INSTALL_MOD_STRIP),1) | |
e340221a | 545 | mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26 TT |
546 | else |
547 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) | |
548 | endif # INSTALL_MOD_STRIP=1 | |
549 | else | |
550 | mod_strip_cmd = true | |
551 | endif # INSTALL_MOD_STRIP | |
552 | export mod_strip_cmd | |
553 | ||
1da177e4 LT |
554 | |
555 | ifeq ($(KBUILD_EXTMOD),) | |
3a65dfe8 | 556 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4 LT |
557 | |
558 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ | |
559 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ | |
560 | $(net-y) $(net-m) $(libs-y) $(libs-m))) | |
561 | ||
562 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ | |
563 | $(init-n) $(init-) \ | |
564 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ | |
565 | $(net-n) $(net-) $(libs-n) $(libs-)))) | |
566 | ||
567 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) | |
568 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) | |
569 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) | |
570 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) | |
571 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) | |
572 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) | |
573 | libs-y := $(libs-y1) $(libs-y2) | |
574 | ||
575 | # Build vmlinux | |
576 | # --------------------------------------------------------------------------- | |
070b98bf | 577 | # vmlinux is built from the objects selected by $(vmlinux-init) and |
1da177e4 | 578 | # $(vmlinux-main). Most are built-in.o files from top-level directories |
2462566f | 579 | # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. |
1da177e4 LT |
580 | # Ordering when linking is important, and $(vmlinux-init) must be first. |
581 | # | |
582 | # vmlinux | |
583 | # ^ | |
584 | # | | |
585 | # +-< $(vmlinux-init) | |
586 | # | +--< init/version.o + more | |
587 | # | | |
588 | # +--< $(vmlinux-main) | |
589 | # | +--< driver/built-in.o mm/built-in.o + more | |
590 | # | | |
591 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) | |
592 | # | |
593 | # vmlinux version (uname -v) cannot be updated during normal | |
594 | # descending-into-subdirs phase since we do not yet know if we need to | |
595 | # update vmlinux. | |
596 | # Therefore this step is delayed until just before final link of vmlinux - | |
597 | # except in the kallsyms case where it is done just before adding the | |
598 | # symbols to the kernel. | |
599 | # | |
600 | # System.map is generated to document addresses of all kernel symbols | |
601 | ||
602 | vmlinux-init := $(head-y) $(init-y) | |
603 | vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) | |
604 | vmlinux-all := $(vmlinux-init) $(vmlinux-main) | |
605 | vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds | |
85bd2fdd | 606 | export KBUILD_VMLINUX_OBJS := $(vmlinux-all) |
1da177e4 LT |
607 | |
608 | # Rule to link vmlinux - also used during CONFIG_KALLSYMS | |
609 | # May be overridden by arch/$(ARCH)/Makefile | |
610 | quiet_cmd_vmlinux__ ?= LD $@ | |
611 | cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ | |
612 | -T $(vmlinux-lds) $(vmlinux-init) \ | |
613 | --start-group $(vmlinux-main) --end-group \ | |
614 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^) | |
615 | ||
616 | # Generate new vmlinux version | |
617 | quiet_cmd_vmlinux_version = GEN .version | |
618 | cmd_vmlinux_version = set -e; \ | |
4e25d8bb JB |
619 | if [ ! -r .version ]; then \ |
620 | rm -f .version; \ | |
621 | echo 1 >.version; \ | |
622 | else \ | |
623 | mv .version .old_version; \ | |
624 | expr 0$$(cat .old_version) + 1 >.version; \ | |
625 | fi; \ | |
1da177e4 LT |
626 | $(MAKE) $(build)=init |
627 | ||
628 | # Generate System.map | |
070b98bf | 629 | quiet_cmd_sysmap = SYSMAP |
1da177e4 LT |
630 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap |
631 | ||
632 | # Link of vmlinux | |
633 | # If CONFIG_KALLSYMS is set .version is already updated | |
634 | # Generate System.map and verify that the content is consistent | |
39ca371c MR |
635 | # Use + in front of the vmlinux_version rule to silent warning with make -j2 |
636 | # First command is ':' to allow us to use + in front of the rule | |
1da177e4 | 637 | define rule_vmlinux__ |
39ca371c | 638 | : |
1da177e4 LT |
639 | $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) |
640 | ||
641 | $(call cmd,vmlinux__) | |
642 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
643 | ||
4635281c SR |
644 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
645 | echo ' $($(quiet)cmd_sysmap) System.map' &&) \ | |
646 | $(cmd_sysmap) $@ System.map; \ | |
647 | if [ $$? -ne 0 ]; then \ | |
648 | rm -f $@; \ | |
649 | /bin/false; \ | |
1da177e4 LT |
650 | fi; |
651 | $(verify_kallsyms) | |
652 | endef | |
653 | ||
654 | ||
655 | ifdef CONFIG_KALLSYMS | |
656 | # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) | |
657 | # It's a three stage process: | |
658 | # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is | |
659 | # empty | |
660 | # Running kallsyms on that gives us .tmp_kallsyms1.o with | |
661 | # the right size - vmlinux version (uname -v) is updated during this step | |
662 | # o .tmp_vmlinux2 now has a __kallsyms section of the right size, | |
663 | # but due to the added section, some addresses have shifted. | |
664 | # From here, we generate a correct .tmp_kallsyms2.o | |
665 | # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. | |
666 | # o Verify that the System.map from vmlinux matches the map from | |
667 | # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. | |
668 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using | |
669 | # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a | |
670 | # temporary bypass to allow the kernel to be built while the | |
671 | # maintainers work out what went wrong with kallsyms. | |
672 | ||
673 | ifdef CONFIG_KALLSYMS_EXTRA_PASS | |
674 | last_kallsyms := 3 | |
675 | else | |
676 | last_kallsyms := 2 | |
677 | endif | |
678 | ||
679 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o | |
680 | ||
681 | define verify_kallsyms | |
4635281c SR |
682 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
683 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ | |
1da177e4 | 684 | $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map |
4635281c SR |
685 | $(Q)cmp -s System.map .tmp_System.map || \ |
686 | (echo Inconsistent kallsyms data; \ | |
687 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ | |
1da177e4 LT |
688 | rm .tmp_kallsyms* ; /bin/false ) |
689 | endef | |
690 | ||
691 | # Update vmlinux version before link | |
692 | # Use + in front of this rule to silent warning about make -j1 | |
72ba47c1 | 693 | # First command is ':' to allow us to use + in front of this rule |
1da177e4 LT |
694 | cmd_ksym_ld = $(cmd_vmlinux__) |
695 | define rule_ksym_ld | |
72ba47c1 | 696 | : |
1da177e4 LT |
697 | +$(call cmd,vmlinux_version) |
698 | $(call cmd,vmlinux__) | |
699 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
700 | endef | |
701 | ||
702 | # Generate .S file with all kernel symbols | |
703 | quiet_cmd_kallsyms = KSYM $@ | |
704 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ | |
705 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ | |
706 | ||
707 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE | |
708 | $(call if_changed_dep,as_o_S) | |
709 | ||
710 | .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) | |
711 | $(call cmd,kallsyms) | |
712 | ||
713 | # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version | |
714 | .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE | |
715 | $(call if_changed_rule,ksym_ld) | |
716 | ||
717 | .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE | |
718 | $(call if_changed,vmlinux__) | |
719 | ||
720 | .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE | |
721 | $(call if_changed,vmlinux__) | |
722 | ||
723 | # Needs to visit scripts/ before $(KALLSYMS) can be used. | |
724 | $(KALLSYMS): scripts ; | |
725 | ||
33bc25ea SR |
726 | # Generate some data for debugging strange kallsyms problems |
727 | debug_kallsyms: .tmp_map$(last_kallsyms) | |
728 | ||
729 | .tmp_map%: .tmp_vmlinux% FORCE | |
730 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ | |
731 | ||
732 | .tmp_map3: .tmp_map2 | |
733 | ||
734 | .tmp_map2: .tmp_map1 | |
735 | ||
1da177e4 LT |
736 | endif # ifdef CONFIG_KALLSYMS |
737 | ||
738 | # vmlinux image - including updated kernel symbols | |
739 | vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE | |
0f836e5f | 740 | ifdef CONFIG_HEADERS_CHECK |
0e7af8d0 | 741 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
0f836e5f | 742 | endif |
1da177e4 | 743 | $(call if_changed_rule,vmlinux__) |
12715d20 | 744 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ |
4e25d8bb | 745 | $(Q)rm -f .old_version |
1da177e4 LT |
746 | |
747 | # The actual objects are generated when descending, | |
748 | # make sure no implicit rule kicks in | |
749 | $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; | |
750 | ||
751 | # Handle descending into subdirectories listed in $(vmlinux-dirs) | |
752 | # Preset locale variables to speed up the build process. Limit locale | |
753 | # tweaks to this spot to avoid wrong language settings when running | |
754 | # make menuconfig etc. | |
755 | # Error messages still appears in the original language | |
756 | ||
4f193362 | 757 | PHONY += $(vmlinux-dirs) |
5bb78269 | 758 | $(vmlinux-dirs): prepare scripts |
1da177e4 LT |
759 | $(Q)$(MAKE) $(build)=$@ |
760 | ||
cb58455c | 761 | # Build the kernel release string |
cb58455c | 762 | # |
1ef98856 RD |
763 | # The KERNELRELEASE value built here is stored in the file |
764 | # include/config/kernel.release, and is used when executing several | |
765 | # make targets, such as "make install" or "make modules_install." | |
766 | # | |
767 | # The eventual kernel release string consists of the following fields, | |
768 | # shown in a hierarchical format to show how smaller parts are concatenated | |
769 | # to form the larger and final value, with values coming from places like | |
770 | # the Makefile, kernel config options, make command line options and/or | |
771 | # SCM tag information. | |
772 | # | |
773 | # $(KERNELVERSION) | |
774 | # $(VERSION) eg, 2 | |
775 | # $(PATCHLEVEL) eg, 6 | |
776 | # $(SUBLEVEL) eg, 18 | |
777 | # $(EXTRAVERSION) eg, -rc6 | |
778 | # $(localver-full) | |
779 | # $(localver) | |
76c32956 | 780 | # localversion* (files without backups, containing '~') |
1ef98856 RD |
781 | # $(CONFIG_LOCALVERSION) (from kernel config setting) |
782 | # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set) | |
783 | # ./scripts/setlocalversion (SCM tag, if one exists) | |
784 | # $(LOCALVERSION) (from make command line if provided) | |
785 | # | |
786 | # Note how the final $(localver-auto) string is included *only* if the | |
787 | # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the | |
788 | # moment, only git is supported but other SCMs can edit the script | |
789 | # scripts/setlocalversion and add the appropriate checks as needed. | |
cb58455c | 790 | |
76c32956 OV |
791 | pattern = ".*/localversion[^~]*" |
792 | string = $(shell cat /dev/null \ | |
fd19e44f | 793 | `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`) |
cb58455c | 794 | |
76c32956 OV |
795 | localver = $(subst $(space),, $(string) \ |
796 | $(patsubst "%",%,$(CONFIG_LOCALVERSION))) | |
070b98bf | 797 | |
cb58455c SR |
798 | # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called |
799 | # and if the SCM is know a tag from the SCM is appended. | |
070b98bf | 800 | # The appended tag is determined by the SCM used. |
cb58455c SR |
801 | # |
802 | # Currently, only git is supported. | |
803 | # Other SCMs can edit scripts/setlocalversion and add the appropriate | |
804 | # checks as needed. | |
805 | ifdef CONFIG_LOCALVERSION_AUTO | |
806 | _localver-auto = $(shell $(CONFIG_SHELL) \ | |
807 | $(srctree)/scripts/setlocalversion $(srctree)) | |
808 | localver-auto = $(LOCALVERSION)$(_localver-auto) | |
809 | endif | |
810 | ||
811 | localver-full = $(localver)$(localver-auto) | |
812 | ||
f1d28fb0 | 813 | # Store (new) KERNELRELASE string in include/config/kernel.release |
2244cbd8 | 814 | kernelrelease = $(KERNELVERSION)$(localver-full) |
f1d28fb0 | 815 | include/config/kernel.release: include/config/auto.conf FORCE |
2244cbd8 SR |
816 | $(Q)rm -f $@ |
817 | $(Q)echo $(kernelrelease) > $@ | |
cb58455c SR |
818 | |
819 | ||
1da177e4 | 820 | # Things we need to do before we recursively start building the kernel |
5bb78269 SR |
821 | # or the modules are listed in "prepare". |
822 | # A multi level approach is used. prepareN is processed before prepareN-1. | |
823 | # archprepare is used in arch Makefiles and when processed asm symlink, | |
824 | # version.h and scripts_basic is processed / created. | |
1da177e4 | 825 | |
5bb78269 | 826 | # Listed in dependency order |
4f193362 | 827 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb78269 | 828 | |
86feeaa8 | 829 | # prepare3 is used to check if we are building in a separate output directory, |
1da177e4 LT |
830 | # and if so do: |
831 | # 1) Check that make has not been executed in the kernel src $(srctree) | |
832 | # 2) Create the include2 directory, used for the second asm symlink | |
f1d28fb0 | 833 | prepare3: include/config/kernel.release |
1da177e4 LT |
834 | ifneq ($(KBUILD_SRC),) |
835 | @echo ' Using $(srctree) as source for kernel' | |
c955ccaf | 836 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
1da177e4 LT |
837 | echo " $(srctree) is not clean, please run 'make mrproper'";\ |
838 | echo " in the '$(srctree)' directory.";\ | |
839 | /bin/false; \ | |
840 | fi; | |
841 | $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; | |
842 | $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm | |
843 | endif | |
844 | ||
86feeaa8 SR |
845 | # prepare2 creates a makefile if using a separate output directory |
846 | prepare2: prepare3 outputmakefile | |
1da177e4 | 847 | |
3eb3c740 RZ |
848 | prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \ |
849 | include/asm include/config/auto.conf | |
1da177e4 | 850 | ifneq ($(KBUILD_MODULES),) |
1da177e4 | 851 | $(Q)mkdir -p $(MODVERDIR) |
fca1dff2 | 852 | $(Q)rm -f $(MODVERDIR)/* |
1da177e4 LT |
853 | endif |
854 | ||
5bb78269 SR |
855 | archprepare: prepare1 scripts_basic |
856 | ||
857 | prepare0: archprepare FORCE | |
8d36a623 | 858 | $(Q)$(MAKE) $(build)=. |
c53aeca0 | 859 | $(Q)$(MAKE) $(build)=. missing-syscalls |
86feeaa8 | 860 | |
1da177e4 | 861 | # All the preparing.. |
d395efb5 | 862 | prepare: prepare0 |
1da177e4 | 863 | |
070b98bf SR |
864 | # Leave this as default for preprocessing vmlinux.lds.S, which is now |
865 | # done in arch/$(ARCH)/kernel/Makefile | |
1da177e4 LT |
866 | |
867 | export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) | |
868 | ||
070b98bf SR |
869 | # FIXME: The asm symlink changes when $(ARCH) changes. That's |
870 | # hard to detect, but I suppose "make mrproper" is a good idea | |
871 | # before switching between archs anyway. | |
1da177e4 LT |
872 | |
873 | include/asm: | |
874 | @echo ' SYMLINK $@ -> include/asm-$(ARCH)' | |
875 | $(Q)if [ ! -d include ]; then mkdir -p include; fi; | |
876 | @ln -fsn asm-$(ARCH) $@ | |
877 | ||
1da177e4 LT |
878 | # Generate some files |
879 | # --------------------------------------------------------------------------- | |
880 | ||
881 | # KERNELRELEASE can change from a few different places, meaning version.h | |
882 | # needs to be updated, so this check is forced on all builds | |
883 | ||
884 | uts_len := 64 | |
63104eec SR |
885 | define filechk_utsrelease.h |
886 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ | |
887 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ | |
888 | exit 1; \ | |
889 | fi; \ | |
890 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) | |
891 | endef | |
1da177e4 LT |
892 | |
893 | define filechk_version.h | |
63104eec SR |
894 | (echo \#define LINUX_VERSION_CODE $(shell \ |
895 | expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ | |
896 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) | |
1da177e4 LT |
897 | endef |
898 | ||
63104eec | 899 | include/linux/version.h: $(srctree)/Makefile FORCE |
1da177e4 LT |
900 | $(call filechk,version.h) |
901 | ||
63104eec SR |
902 | include/linux/utsrelease.h: include/config/kernel.release FORCE |
903 | $(call filechk,utsrelease.h) | |
904 | ||
1da177e4 LT |
905 | # --------------------------------------------------------------------------- |
906 | ||
4f193362 | 907 | PHONY += depend dep |
1da177e4 LT |
908 | depend dep: |
909 | @echo '*** Warning: make $@ is unnecessary now.' | |
910 | ||
8d730cfb DW |
911 | # --------------------------------------------------------------------------- |
912 | # Kernel headers | |
1ab7a1f3 | 913 | INSTALL_HDR_PATH=$(objtree)/usr |
8d730cfb DW |
914 | export INSTALL_HDR_PATH |
915 | ||
6d716275 DW |
916 | HDRARCHES=$(filter-out generic,$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild))) |
917 | ||
918 | PHONY += headers_install_all | |
3eb3c740 | 919 | headers_install_all: include/linux/version.h scripts_basic FORCE |
398477d4 | 920 | $(Q)$(MAKE) $(build)=scripts scripts/unifdef |
6d716275 | 921 | $(Q)for arch in $(HDRARCHES); do \ |
398477d4 | 922 | $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch ;\ |
6d716275 DW |
923 | done |
924 | ||
8d730cfb | 925 | PHONY += headers_install |
3eb3c740 | 926 | headers_install: include/linux/version.h scripts_basic FORCE |
0e7af8d0 | 927 | @if [ ! -r $(srctree)/include/asm-$(ARCH)/Kbuild ]; then \ |
f17b7bad DW |
928 | echo '*** Error: Headers not exportable for this architecture ($(ARCH))'; \ |
929 | exit 1 ; fi | |
07aea3a7 | 930 | $(Q)$(MAKE) $(build)=scripts scripts/unifdef |
b805aa0e | 931 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include |
8d730cfb | 932 | |
1f85712e MF |
933 | PHONY += headers_check_all |
934 | headers_check_all: headers_install_all | |
935 | $(Q)for arch in $(HDRARCHES); do \ | |
936 | $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch HDRCHECK=1 ;\ | |
937 | done | |
938 | ||
68475359 DW |
939 | PHONY += headers_check |
940 | headers_check: headers_install | |
b805aa0e | 941 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1 |
68475359 | 942 | |
1da177e4 LT |
943 | # --------------------------------------------------------------------------- |
944 | # Modules | |
945 | ||
946 | ifdef CONFIG_MODULES | |
947 | ||
070b98bf | 948 | # By default, build modules as well |
1da177e4 LT |
949 | |
950 | all: modules | |
951 | ||
952 | # Build modules | |
953 | ||
4f193362 | 954 | PHONY += modules |
1da177e4 LT |
955 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) |
956 | @echo ' Building modules, stage 2.'; | |
b805aa0e | 957 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4 LT |
958 | |
959 | ||
960 | # Target to prepare building external modules | |
4f193362 | 961 | PHONY += modules_prepare |
5bb78269 | 962 | modules_prepare: prepare scripts |
1da177e4 LT |
963 | |
964 | # Target to install modules | |
4f193362 | 965 | PHONY += modules_install |
1da177e4 LT |
966 | modules_install: _modinst_ _modinst_post |
967 | ||
4f193362 | 968 | PHONY += _modinst_ |
1da177e4 | 969 | _modinst_: |
ce454d4d | 970 | @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ |
1da177e4 LT |
971 | echo "Warning: you may need to install module-init-tools"; \ |
972 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ | |
973 | sleep 1; \ | |
974 | fi | |
975 | @rm -rf $(MODLIB)/kernel | |
976 | @rm -f $(MODLIB)/source | |
977 | @mkdir -p $(MODLIB)/kernel | |
978 | @ln -s $(srctree) $(MODLIB)/source | |
979 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ | |
980 | rm -f $(MODLIB)/build ; \ | |
981 | ln -s $(objtree) $(MODLIB)/build ; \ | |
982 | fi | |
b805aa0e | 983 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 LT |
984 | |
985 | # If System.map exists, run depmod. This deliberately does not have a | |
986 | # dependency on System.map since that would run the dependency tree on | |
987 | # vmlinux. This depmod is only for convenience to give the initial | |
988 | # boot a modules.dep even before / is mounted read-write. However the | |
989 | # boot script depmod is the master version. | |
990 | ifeq "$(strip $(INSTALL_MOD_PATH))" "" | |
991 | depmod_opts := | |
992 | else | |
993 | depmod_opts := -b $(INSTALL_MOD_PATH) -r | |
994 | endif | |
4f193362 | 995 | PHONY += _modinst_post |
1da177e4 LT |
996 | _modinst_post: _modinst_ |
997 | if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi | |
998 | ||
999 | else # CONFIG_MODULES | |
1000 | ||
1001 | # Modules not configured | |
1002 | # --------------------------------------------------------------------------- | |
1003 | ||
1004 | modules modules_install: FORCE | |
1005 | @echo | |
1006 | @echo "The present kernel configuration has modules disabled." | |
1007 | @echo "Type 'make config' and enable loadable module support." | |
1008 | @echo "Then build a kernel with module support enabled." | |
1009 | @echo | |
1010 | @exit 1 | |
1011 | ||
1012 | endif # CONFIG_MODULES | |
1013 | ||
1da177e4 LT |
1014 | ### |
1015 | # Cleaning is done on three levels. | |
1016 | # make clean Delete most generated files | |
1017 | # Leave enough to build external modules | |
1018 | # make mrproper Delete the current configuration, and all generated files | |
1019 | # make distclean Remove editor backup files, patch leftover files and the like | |
1020 | ||
1021 | # Directories & files removed with 'make clean' | |
1022 | CLEAN_DIRS += $(MODVERDIR) | |
1023 | CLEAN_FILES += vmlinux System.map \ | |
1024 | .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map | |
1025 | ||
1026 | # Directories & files removed with 'make mrproper' | |
1ab7a1f3 | 1027 | MRPROPER_DIRS += include/config include2 usr/include |
50aa88e2 | 1028 | MRPROPER_FILES += .config .config.old include/asm .version .old_version \ |
3eb3c740 RZ |
1029 | include/linux/autoconf.h include/linux/version.h \ |
1030 | include/linux/utsrelease.h \ | |
f1d28fb0 | 1031 | Module.symvers tags TAGS cscope* |
1da177e4 LT |
1032 | |
1033 | # clean - Delete most, but leave enough to build external modules | |
1034 | # | |
1035 | clean: rm-dirs := $(CLEAN_DIRS) | |
1036 | clean: rm-files := $(CLEAN_FILES) | |
86feeaa8 | 1037 | clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs)) |
1da177e4 | 1038 | |
4f193362 | 1039 | PHONY += $(clean-dirs) clean archclean |
1da177e4 LT |
1040 | $(clean-dirs): |
1041 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1042 | ||
1043 | clean: archclean $(clean-dirs) | |
1044 | $(call cmd,rmdirs) | |
1045 | $(call cmd,rmfiles) | |
1046 | @find . $(RCS_FIND_IGNORE) \ | |
070b98bf | 1047 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
15fde675 AG |
1048 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
1049 | -o -name '*.symtypes' \) \ | |
1da177e4 LT |
1050 | -type f -print | xargs rm -f |
1051 | ||
1052 | # mrproper - Delete all generated files, including .config | |
1053 | # | |
1054 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) | |
1055 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) | |
1056 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) | |
1057 | ||
4f193362 | 1058 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4 LT |
1059 | $(mrproper-dirs): |
1060 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) | |
1061 | ||
1062 | mrproper: clean archmrproper $(mrproper-dirs) | |
1063 | $(call cmd,rmdirs) | |
1064 | $(call cmd,rmfiles) | |
1065 | ||
1066 | # distclean | |
1067 | # | |
4f193362 | 1068 | PHONY += distclean |
1da177e4 LT |
1069 | |
1070 | distclean: mrproper | |
1071 | @find $(srctree) $(RCS_FIND_IGNORE) \ | |
070b98bf | 1072 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1da177e4 | 1073 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
070b98bf | 1074 | -o -name '.*.rej' -o -size 0 \ |
1da177e4 LT |
1075 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
1076 | -type f -print | xargs rm -f | |
1077 | ||
1078 | ||
1079 | # Packaging of the kernel to various formats | |
1080 | # --------------------------------------------------------------------------- | |
1081 | # rpm target kept for backward compatibility | |
1082 | package-dir := $(srctree)/scripts/package | |
1083 | ||
031ecc6d | 1084 | %pkg: include/config/kernel.release FORCE |
6c2133e1 | 1085 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6d | 1086 | rpm: include/config/kernel.release FORCE |
6c2133e1 | 1087 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4 LT |
1088 | |
1089 | ||
1090 | # Brief documentation of the typical targets used | |
1091 | # --------------------------------------------------------------------------- | |
1092 | ||
1093 | boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) | |
1094 | boards := $(notdir $(boards)) | |
1095 | ||
1096 | help: | |
1097 | @echo 'Cleaning targets:' | |
5ea084ef | 1098 | @echo ' clean - Remove most generated files but keep the config and' |
5cc8d246 | 1099 | @echo ' enough build support to build external modules' |
5ea084ef | 1100 | @echo ' mrproper - Remove all generated files + config + various backup files' |
5cc8d246 | 1101 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4 LT |
1102 | @echo '' |
1103 | @echo 'Configuration targets:' | |
1104 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help | |
1105 | @echo '' | |
1106 | @echo 'Other generic targets:' | |
1107 | @echo ' all - Build all targets marked with [*]' | |
1108 | @echo '* vmlinux - Build the bare kernel' | |
1109 | @echo '* modules - Build all modules' | |
9cc5d74c | 1110 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
1da177e4 LT |
1111 | @echo ' dir/ - Build all files in dir and below' |
1112 | @echo ' dir/file.[ois] - Build specified target only' | |
155ad605 | 1113 | @echo ' dir/file.ko - Build module including final link' |
1da177e4 LT |
1114 | @echo ' rpm - Build a kernel as an RPM package' |
1115 | @echo ' tags/TAGS - Generate tags file for editors' | |
1116 | @echo ' cscope - Generate cscope index' | |
6d128842 | 1117 | @echo ' kernelrelease - Output the release version string' |
cb58455c | 1118 | @echo ' kernelversion - Output the version stored in Makefile' |
59df3230 | 1119 | @if [ -r $(srctree)/include/asm-$(ARCH)/Kbuild ]; then \ |
f17b7bad | 1120 | echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
59df3230 | 1121 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
f17b7bad | 1122 | fi |
1da177e4 LT |
1123 | @echo '' |
1124 | @echo 'Static analysers' | |
1da177e4 LT |
1125 | @echo ' checkstack - Generate a list of stack hogs' |
1126 | @echo ' namespacecheck - Name space analysis on compiled kernel' | |
59df3230 | 1127 | @if [ -r $(srctree)/include/asm-$(ARCH)/Kbuild ]; then \ |
f17b7bad DW |
1128 | echo ' headers_check - Sanity check on exported headers'; \ |
1129 | fi | |
1da177e4 LT |
1130 | @echo '' |
1131 | @echo 'Kernel packaging:' | |
6c2133e1 | 1132 | @$(MAKE) $(build)=$(package-dir) help |
1da177e4 LT |
1133 | @echo '' |
1134 | @echo 'Documentation targets:' | |
1135 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp | |
1136 | @echo '' | |
1137 | @echo 'Architecture specific targets ($(ARCH)):' | |
1138 | @$(if $(archhelp),$(archhelp),\ | |
1139 | echo ' No architecture specific help defined for $(ARCH)') | |
1140 | @echo '' | |
1141 | @$(if $(boards), \ | |
1142 | $(foreach b, $(boards), \ | |
1143 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ | |
1144 | echo '') | |
1145 | ||
1146 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' | |
45d506bd | 1147 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4 | 1148 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
701842e3 DK |
1149 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
1150 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' | |
1da177e4 LT |
1151 | @echo '' |
1152 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' | |
1153 | @echo 'For further info see the ./README file' | |
1154 | ||
1155 | ||
1156 | # Documentation targets | |
1157 | # --------------------------------------------------------------------------- | |
1158 | %docs: scripts_basic FORCE | |
1159 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ | |
1160 | ||
1161 | else # KBUILD_EXTMOD | |
1162 | ||
1163 | ### | |
1164 | # External module support. | |
1165 | # When building external modules the kernel used as basis is considered | |
1166 | # read-only, and no consistency checks are made and the make | |
1167 | # system is not used on the basis kernel. If updates are required | |
1168 | # in the basis kernel ordinary make commands (without M=...) must | |
1169 | # be used. | |
1170 | # | |
1171 | # The following are the only valid targets when building external | |
1172 | # modules. | |
1173 | # make M=dir clean Delete all automatically generated files | |
1174 | # make M=dir modules Make all modules in specified dir | |
1175 | # make M=dir Same as 'make M=dir modules' | |
1176 | # make M=dir modules_install | |
070b98bf | 1177 | # Install the modules built in the module directory |
1da177e4 LT |
1178 | # Assumes install directory is already created |
1179 | ||
1180 | # We are always building modules | |
1181 | KBUILD_MODULES := 1 | |
4f193362 | 1182 | PHONY += crmodverdir |
1da177e4 LT |
1183 | crmodverdir: |
1184 | $(Q)mkdir -p $(MODVERDIR) | |
fca1dff2 | 1185 | $(Q)rm -f $(MODVERDIR)/* |
1da177e4 | 1186 | |
4f193362 | 1187 | PHONY += $(objtree)/Module.symvers |
1da177e4 LT |
1188 | $(objtree)/Module.symvers: |
1189 | @test -e $(objtree)/Module.symvers || ( \ | |
1190 | echo; \ | |
1191 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ | |
1192 | echo " is missing; modules will have no dependencies and modversions."; \ | |
1193 | echo ) | |
1194 | ||
1195 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) | |
4f193362 | 1196 | PHONY += $(module-dirs) modules |
1da177e4 LT |
1197 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1198 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) | |
1199 | ||
1200 | modules: $(module-dirs) | |
1201 | @echo ' Building modules, stage 2.'; | |
b805aa0e | 1202 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4 | 1203 | |
4f193362 | 1204 | PHONY += modules_install |
a67dc21a | 1205 | modules_install: _emodinst_ _emodinst_post |
e6304663 | 1206 | |
4f193362 PS |
1207 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1208 | PHONY += _emodinst_ | |
a67dc21a | 1209 | _emodinst_: |
a67dc21a | 1210 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e | 1211 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1212 | |
a67dc21a SR |
1213 | # Run depmod only is we have System.map and depmod is executable |
1214 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) | |
1215 | cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \ | |
1216 | $(DEPMOD) -ae -F System.map \ | |
1217 | $(if $(strip $(INSTALL_MOD_PATH)), \ | |
1218 | -b $(INSTALL_MOD_PATH) -r) \ | |
1219 | $(KERNELRELEASE); \ | |
1220 | fi | |
1221 | ||
4f193362 | 1222 | PHONY += _emodinst_post |
a67dc21a SR |
1223 | _emodinst_post: _emodinst_ |
1224 | $(call cmd,depmod) | |
1225 | ||
1da177e4 LT |
1226 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1227 | ||
4f193362 | 1228 | PHONY += $(clean-dirs) clean |
1da177e4 LT |
1229 | $(clean-dirs): |
1230 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1231 | ||
1232 | clean: rm-dirs := $(MODVERDIR) | |
1233 | clean: $(clean-dirs) | |
1234 | $(call cmd,rmdirs) | |
1235 | @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ | |
070b98bf | 1236 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
1da177e4 LT |
1237 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ |
1238 | -type f -print | xargs rm -f | |
1239 | ||
1240 | help: | |
1241 | @echo ' Building external modules.' | |
1242 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' | |
1243 | @echo '' | |
1244 | @echo ' modules - default target, build the module(s)' | |
1245 | @echo ' modules_install - install the module' | |
1246 | @echo ' clean - remove generated files in module directory only' | |
1247 | @echo '' | |
06300b21 SR |
1248 | |
1249 | # Dummies... | |
4f193362 | 1250 | PHONY += prepare scripts |
06300b21 SR |
1251 | prepare: ; |
1252 | scripts: ; | |
1da177e4 LT |
1253 | endif # KBUILD_EXTMOD |
1254 | ||
1255 | # Generate tags for editors | |
1256 | # --------------------------------------------------------------------------- | |
1257 | ||
1258 | #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set | |
1259 | #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file. | |
1260 | #Adding $(srctree) adds about 20M on i386 to the size of the output file! | |
1261 | ||
f182ae62 | 1262 | ifeq ($(src),$(obj)) |
1da177e4 LT |
1263 | __srctree = |
1264 | else | |
1265 | __srctree = $(srctree)/ | |
1266 | endif | |
1267 | ||
2ab23c95 PBG |
1268 | ifeq ($(ALLSOURCE_ARCHS),) |
1269 | ifeq ($(ARCH),um) | |
1270 | ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH) | |
1271 | else | |
1272 | ALLINCLUDE_ARCHS := $(ARCH) | |
1273 | endif | |
1274 | else | |
070b98bf | 1275 | #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour. |
2ab23c95 PBG |
1276 | ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS) |
1277 | endif | |
1278 | ||
a0674e88 IC |
1279 | ALLSOURCE_ARCHS := $(ARCH) |
1280 | ||
e838db68 | 1281 | define find-sources |
dd7e54ad | 1282 | ( for ARCH in $(ALLSOURCE_ARCHS) ; do \ |
a0674e88 | 1283 | find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \ |
e838db68 | 1284 | -name $1 -print; \ |
a0674e88 | 1285 | done ; \ |
1da177e4 | 1286 | find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \ |
e838db68 | 1287 | -name $1 -print; \ |
1da177e4 LT |
1288 | find $(__srctree)include $(RCS_FIND_IGNORE) \ |
1289 | \( -name config -o -name 'asm-*' \) -prune \ | |
e838db68 | 1290 | -o -name $1 -print; \ |
2ab23c95 | 1291 | for ARCH in $(ALLINCLUDE_ARCHS) ; do \ |
a0674e88 | 1292 | find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \ |
e838db68 | 1293 | -name $1 -print; \ |
a0674e88 | 1294 | done ; \ |
1da177e4 | 1295 | find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ |
dd7e54ad DM |
1296 | -name $1 -print; \ |
1297 | find $(__srctree) $(RCS_FIND_IGNORE) \ | |
1298 | \( -name include -o -name arch \) -prune -o \ | |
1299 | -name $1 -print; \ | |
1300 | ) | |
e838db68 MY |
1301 | endef |
1302 | ||
1303 | define all-sources | |
1304 | $(call find-sources,'*.[chS]') | |
1305 | endef | |
1306 | define all-kconfigs | |
1307 | $(call find-sources,'Kconfig*') | |
1308 | endef | |
1309 | define all-defconfigs | |
1310 | $(call find-sources,'defconfig') | |
1da177e4 LT |
1311 | endef |
1312 | ||
da7c0408 AG |
1313 | define xtags |
1314 | if $1 --version 2>&1 | grep -iq exuberant; then \ | |
1315 | $(all-sources) | xargs $1 -a \ | |
1316 | -I __initdata,__exitdata,__acquires,__releases \ | |
1317 | -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ | |
91b943ee AK |
1318 | --extra=+f --c-kinds=+px \ |
1319 | --regex-asm='/ENTRY\(([^)]*)\).*/\1/'; \ | |
da7c0408 AG |
1320 | $(all-kconfigs) | xargs $1 -a \ |
1321 | --langdef=kconfig \ | |
1322 | --language-force=kconfig \ | |
1323 | --regex-kconfig='/^[[:blank:]]*config[[:blank:]]+([[:alnum:]_]+)/\1/'; \ | |
18e39913 | 1324 | $(all-defconfigs) | xargs -r $1 -a \ |
da7c0408 AG |
1325 | --langdef=dotconfig \ |
1326 | --language-force=dotconfig \ | |
1327 | --regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'; \ | |
1328 | elif $1 --version 2>&1 | grep -iq emacs; then \ | |
1329 | $(all-sources) | xargs $1 -a; \ | |
1330 | $(all-kconfigs) | xargs $1 -a \ | |
1331 | --regex='/^[ \t]*config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \ | |
18e39913 | 1332 | $(all-defconfigs) | xargs -r $1 -a \ |
da7c0408 AG |
1333 | --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \ |
1334 | else \ | |
1335 | $(all-sources) | xargs $1 -a; \ | |
1336 | fi | |
1337 | endef | |
1338 | ||
1da177e4 | 1339 | quiet_cmd_cscope-file = FILELST cscope.files |
acbef459 | 1340 | cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files |
1da177e4 LT |
1341 | |
1342 | quiet_cmd_cscope = MAKE cscope.out | |
acbef459 | 1343 | cmd_cscope = cscope -b |
1da177e4 LT |
1344 | |
1345 | cscope: FORCE | |
1346 | $(call cmd,cscope-file) | |
1347 | $(call cmd,cscope) | |
1348 | ||
1349 | quiet_cmd_TAGS = MAKE $@ | |
66d609ec SR |
1350 | define cmd_TAGS |
1351 | rm -f $@; \ | |
da7c0408 | 1352 | $(call xtags,etags) |
66d609ec SR |
1353 | endef |
1354 | ||
1355 | TAGS: FORCE | |
1356 | $(call cmd,TAGS) | |
1da177e4 | 1357 | |
1da177e4 LT |
1358 | quiet_cmd_tags = MAKE $@ |
1359 | define cmd_tags | |
1360 | rm -f $@; \ | |
da7c0408 | 1361 | $(call xtags,ctags) |
1da177e4 LT |
1362 | endef |
1363 | ||
1da177e4 LT |
1364 | tags: FORCE |
1365 | $(call cmd,tags) | |
1366 | ||
1367 | ||
1368 | # Scripts to check various things for consistency | |
1369 | # --------------------------------------------------------------------------- | |
1370 | ||
1da177e4 LT |
1371 | includecheck: |
1372 | find * $(RCS_FIND_IGNORE) \ | |
1373 | -name '*.[hcS]' -type f -print | sort \ | |
1374 | | xargs $(PERL) -w scripts/checkincludes.pl | |
1375 | ||
1376 | versioncheck: | |
1377 | find * $(RCS_FIND_IGNORE) \ | |
1378 | -name '*.[hcS]' -type f -print | sort \ | |
1379 | | xargs $(PERL) -w scripts/checkversion.pl | |
1380 | ||
1da177e4 LT |
1381 | namespacecheck: |
1382 | $(PERL) $(srctree)/scripts/namespace.pl | |
1383 | ||
1384 | endif #ifeq ($(config-targets),1) | |
1385 | endif #ifeq ($(mixed-targets),1) | |
1386 | ||
c30a02e0 | 1387 | PHONY += checkstack kernelrelease kernelversion |
e3ccf6e3 | 1388 | |
011e3a9a JD |
1389 | # UML needs a little special treatment here. It wants to use the host |
1390 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone | |
1391 | # else wants $(ARCH), including people doing cross-builds, which means | |
1392 | # that $(SUBARCH) doesn't work here. | |
1393 | ifeq ($(ARCH), um) | |
1394 | CHECKSTACK_ARCH := $(SUBARCH) | |
1395 | else | |
1396 | CHECKSTACK_ARCH := $(ARCH) | |
1397 | endif | |
1da177e4 LT |
1398 | checkstack: |
1399 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ | |
011e3a9a | 1400 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1da177e4 LT |
1401 | |
1402 | kernelrelease: | |
f1d28fb0 RZ |
1403 | $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ |
1404 | $(error kernelrelease not valid - run 'make prepare' to update it)) | |
cb58455c | 1405 | kernelversion: |
2244cbd8 | 1406 | @echo $(KERNELVERSION) |
1da177e4 | 1407 | |
06300b21 SR |
1408 | # Single targets |
1409 | # --------------------------------------------------------------------------- | |
bc2546a6 SR |
1410 | # Single targets are compatible with: |
1411 | # - build whith mixed source and output | |
1412 | # - build with separate output dir 'make O=...' | |
1413 | # - external modules | |
1414 | # | |
1415 | # target-dir => where to store outputfile | |
1416 | # build-dir => directory in kernel source tree to use | |
1417 | ||
1418 | ifeq ($(KBUILD_EXTMOD),) | |
aa360879 | 1419 | build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a6 SR |
1420 | target-dir = $(dir $@) |
1421 | else | |
1422 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) | |
1423 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) | |
1424 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) | |
1425 | endif | |
1426 | ||
f6ecebd6 | 1427 | %.s: %.c prepare scripts FORCE |
bc2546a6 | 1428 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1429 | %.i: %.c prepare scripts FORCE |
bc2546a6 | 1430 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1431 | %.o: %.c prepare scripts FORCE |
bc2546a6 | 1432 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1433 | %.lst: %.c prepare scripts FORCE |
bc2546a6 | 1434 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1435 | %.s: %.S prepare scripts FORCE |
bc2546a6 | 1436 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1437 | %.o: %.S prepare scripts FORCE |
bc2546a6 | 1438 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde675 AG |
1439 | %.symtypes: %.c prepare scripts FORCE |
1440 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | |
06300b21 | 1441 | |
bc2546a6 SR |
1442 | # Modules |
1443 | / %/: prepare scripts FORCE | |
06300b21 | 1444 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 SR |
1445 | $(build)=$(build-dir) |
1446 | %.ko: prepare scripts FORCE | |
06300b21 | 1447 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 | 1448 | $(build)=$(build-dir) $(@:.ko=.o) |
b805aa0e | 1449 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21 | 1450 | |
1da177e4 LT |
1451 | # FIXME Should go into a make.lib or something |
1452 | # =========================================================================== | |
1453 | ||
1454 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) | |
1455 | cmd_rmdirs = rm -rf $(rm-dirs) | |
1456 | ||
1457 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) | |
1458 | cmd_rmfiles = rm -f $(rm-files) | |
1459 | ||
1460 | ||
1461 | a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \ | |
1462 | $(NOSTDINC_FLAGS) $(CPPFLAGS) \ | |
5e8d780d | 1463 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) |
1da177e4 LT |
1464 | |
1465 | quiet_cmd_as_o_S = AS $@ | |
1466 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< | |
1467 | ||
1468 | # read all saved command lines | |
1469 | ||
1470 | targets := $(wildcard $(sort $(targets))) | |
1471 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | |
1472 | ||
1473 | ifneq ($(cmd_files),) | |
1474 | $(cmd_files): ; # Do not try to update included dependency files | |
1475 | include $(cmd_files) | |
1476 | endif | |
1477 | ||
1da177e4 LT |
1478 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
1479 | # Usage: | |
1480 | # $(Q)$(MAKE) $(clean)=dir | |
1481 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj | |
1482 | ||
1da177e4 LT |
1483 | endif # skip-makefile |
1484 | ||
4f193362 | 1485 | PHONY += FORCE |
1da177e4 | 1486 | FORCE: |
4f193362 | 1487 | |
15964864 OV |
1488 | # Cancel implicit rules on top Makefile, `-rR' will apply to sub-makes. |
1489 | Makefile: ; | |
4f193362 PS |
1490 | |
1491 | # Declare the contents of the .PHONY variable as phony. We keep that | |
1492 | # information in a variable se we can use it in if_changed and friends. | |
1493 | .PHONY: $(PHONY) |