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1da177e4 LT |
1 | VERSION = 2 |
2 | PATCHLEVEL = 6 | |
d223a601 | 3 | SUBLEVEL = 19 |
0215ffb0 | 4 | EXTRAVERSION = |
e478bec0 | 5 | NAME=Avast! A bilge rat! |
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 | ||
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 vmlinux), 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 = $(V) | |
38 | endif | |
39 | endif | |
40 | ifndef KBUILD_VERBOSE | |
41 | KBUILD_VERBOSE = 0 | |
42 | endif | |
43 | ||
1c7bafe7 RD |
44 | # Call a source code checker (by default, "sparse") as part of the |
45 | # C compilation. | |
46 | # | |
47 | # Use 'make C=1' to enable checking of only re-compiled files. | |
48 | # Use 'make C=2' to enable checking of *all* source files, regardless | |
49 | # of whether they are re-compiled or not. | |
50 | # | |
51 | # See the file "Documentation/sparse.txt" for more details, including | |
52 | # where to get the "sparse" utility. | |
1da177e4 LT |
53 | |
54 | ifdef C | |
55 | ifeq ("$(origin C)", "command line") | |
56 | KBUILD_CHECKSRC = $(C) | |
57 | endif | |
58 | endif | |
59 | ifndef KBUILD_CHECKSRC | |
60 | KBUILD_CHECKSRC = 0 | |
61 | endif | |
62 | ||
63 | # Use make M=dir to specify directory of external module to build | |
64 | # Old syntax make ... SUBDIRS=$PWD is still supported | |
65 | # Setting the environment variable KBUILD_EXTMOD take precedence | |
66 | ifdef SUBDIRS | |
67 | KBUILD_EXTMOD ?= $(SUBDIRS) | |
68 | endif | |
69 | ifdef M | |
70 | ifeq ("$(origin M)", "command line") | |
71 | KBUILD_EXTMOD := $(M) | |
72 | endif | |
73 | endif | |
74 | ||
75 | ||
76 | # kbuild supports saving output files in a separate directory. | |
77 | # To locate output files in a separate directory two syntaxes are supported. | |
78 | # In both cases the working directory must be the root of the kernel src. | |
79 | # 1) O= | |
80 | # Use "make O=dir/to/store/output/files/" | |
070b98bf | 81 | # |
1da177e4 LT |
82 | # 2) Set KBUILD_OUTPUT |
83 | # Set the environment variable KBUILD_OUTPUT to point to the directory | |
84 | # where the output files shall be placed. | |
85 | # export KBUILD_OUTPUT=dir/to/store/output/files/ | |
86 | # make | |
87 | # | |
88 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment | |
89 | # variable. | |
90 | ||
91 | ||
92 | # KBUILD_SRC is set on invocation of make in OBJ directory | |
93 | # KBUILD_SRC is not intended to be used by the regular user (for now) | |
94 | ifeq ($(KBUILD_SRC),) | |
95 | ||
96 | # OK, Make called in directory where kernel src resides | |
97 | # Do we want to locate output files in a separate directory? | |
98 | ifdef O | |
99 | ifeq ("$(origin O)", "command line") | |
100 | KBUILD_OUTPUT := $(O) | |
101 | endif | |
102 | endif | |
103 | ||
104 | # That's our default target when none is given on the command line | |
4f193362 | 105 | PHONY := _all |
1da177e4 LT |
106 | _all: |
107 | ||
108 | ifneq ($(KBUILD_OUTPUT),) | |
109 | # Invoke a second make in the output directory, passing relevant variables | |
110 | # check that the output directory actually exists | |
111 | saved-output := $(KBUILD_OUTPUT) | |
112 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) | |
113 | $(if $(KBUILD_OUTPUT),, \ | |
114 | $(error output directory "$(saved-output)" does not exist)) | |
115 | ||
4f193362 | 116 | PHONY += $(MAKECMDGOALS) |
1da177e4 | 117 | |
36cbbe5e | 118 | $(filter-out _all,$(MAKECMDGOALS)) _all: |
23a45e2c SR |
119 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
120 | KBUILD_SRC=$(CURDIR) \ | |
36cbbe5e | 121 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@ |
1da177e4 LT |
122 | |
123 | # Leave processing to above invocation of make | |
124 | skip-makefile := 1 | |
125 | endif # ifneq ($(KBUILD_OUTPUT),) | |
126 | endif # ifeq ($(KBUILD_SRC),) | |
127 | ||
128 | # We process the rest of the Makefile if this is the final invocation of make | |
129 | ifeq ($(skip-makefile),) | |
130 | ||
131 | # If building an external module we do not care about the all: rule | |
132 | # but instead _all depend on modules | |
4f193362 | 133 | PHONY += all |
1da177e4 LT |
134 | ifeq ($(KBUILD_EXTMOD),) |
135 | _all: all | |
136 | else | |
137 | _all: modules | |
138 | endif | |
139 | ||
140 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) | |
141 | TOPDIR := $(srctree) | |
142 | # FIXME - TOPDIR is obsolete, use srctree/objtree | |
143 | objtree := $(CURDIR) | |
144 | src := $(srctree) | |
145 | obj := $(objtree) | |
146 | ||
0f558c33 | 147 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
1da177e4 LT |
148 | |
149 | export srctree objtree VPATH TOPDIR | |
150 | ||
1da177e4 LT |
151 | |
152 | # SUBARCH tells the usermode build what the underlying arch is. That is set | |
153 | # first, and if a usermode build is happening, the "ARCH=um" on the command | |
154 | # line overrides the setting of ARCH below. If a native build is happening, | |
155 | # then ARCH is assigned, getting whatever value it gets normally, and | |
156 | # SUBARCH is subsequently ignored. | |
157 | ||
158 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ | |
159 | -e s/arm.*/arm/ -e s/sa110/arm/ \ | |
39990b5e | 160 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
8999257c | 161 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ ) |
1da177e4 LT |
162 | |
163 | # Cross compiling and selecting different set of gcc/bin-utils | |
164 | # --------------------------------------------------------------------------- | |
165 | # | |
166 | # When performing cross compilation for other architectures ARCH shall be set | |
167 | # to the target architecture. (See arch/* for the possibilities). | |
168 | # ARCH can be set during invocation of make: | |
169 | # make ARCH=ia64 | |
170 | # Another way is to have ARCH set in the environment. | |
171 | # The default ARCH is the host where make is executed. | |
172 | ||
173 | # CROSS_COMPILE specify the prefix used for all executables used | |
174 | # during compilation. Only gcc and related bin-utils executables | |
175 | # are prefixed with $(CROSS_COMPILE). | |
176 | # CROSS_COMPILE can be set on the command line | |
177 | # make CROSS_COMPILE=ia64-linux- | |
178 | # Alternatively CROSS_COMPILE can be set in the environment. | |
179 | # Default value for CROSS_COMPILE is not to prefix executables | |
180 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile | |
181 | ||
182 | ARCH ?= $(SUBARCH) | |
183 | CROSS_COMPILE ?= | |
184 | ||
185 | # Architecture as present in compile.h | |
186 | UTS_MACHINE := $(ARCH) | |
187 | ||
14cdd3c4 RZ |
188 | KCONFIG_CONFIG ?= .config |
189 | ||
1da177e4 LT |
190 | # SHELL used by kbuild |
191 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
192 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
193 | else echo sh; fi ; fi) | |
194 | ||
070b98bf SR |
195 | HOSTCC = gcc |
196 | HOSTCXX = g++ | |
197 | HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer | |
198 | HOSTCXXFLAGS = -O2 | |
1da177e4 | 199 | |
070b98bf SR |
200 | # Decide whether to build built-in, modular, or both. |
201 | # Normally, just do built-in. | |
1da177e4 LT |
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 | |
070b98bf | 209 | # make sure the checksums are up to date before we record them. |
1da177e4 LT |
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 | ||
e579d351 | 227 | export KBUILD_MODULES KBUILD_BUILTIN |
1da177e4 LT |
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. | |
070b98bf | 242 | # If it is set to "silent_", nothing will be printed at all, since |
1da177e4 LT |
243 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
244 | # | |
a58a414f | 245 | # A simple variant is to prefix commands with $(Q) - that's useful |
1da177e4 LT |
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 | ||
1da177e4 LT |
270 | |
271 | # Look for make include files relative to root of kernel src | |
272 | MAKEFLAGS += --include-dir=$(srctree) | |
273 | ||
8ec4b4ff | 274 | # We need some generic definitions |
2a691470 | 275 | include $(srctree)/scripts/Kbuild.include |
8ec4b4ff | 276 | |
566f81ca | 277 | # Do not use make's built-in rules and variables |
070b98bf | 278 | # This increases performance and avoid hard-to-debug behavour |
566f81ca | 279 | MAKEFLAGS += -rR |
1da177e4 LT |
280 | |
281 | # Make variables (CC, etc...) | |
282 | ||
283 | AS = $(CROSS_COMPILE)as | |
284 | LD = $(CROSS_COMPILE)ld | |
285 | CC = $(CROSS_COMPILE)gcc | |
286 | CPP = $(CC) -E | |
287 | AR = $(CROSS_COMPILE)ar | |
288 | NM = $(CROSS_COMPILE)nm | |
289 | STRIP = $(CROSS_COMPILE)strip | |
290 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
291 | OBJDUMP = $(CROSS_COMPILE)objdump | |
292 | AWK = awk | |
293 | GENKSYMS = scripts/genksyms/genksyms | |
294 | DEPMOD = /sbin/depmod | |
295 | KALLSYMS = scripts/kallsyms | |
296 | PERL = perl | |
297 | CHECK = sparse | |
298 | ||
af4ca457 | 299 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF) |
1da177e4 LT |
300 | MODFLAGS = -DMODULE |
301 | CFLAGS_MODULE = $(MODFLAGS) | |
302 | AFLAGS_MODULE = $(MODFLAGS) | |
303 | LDFLAGS_MODULE = -r | |
304 | CFLAGS_KERNEL = | |
305 | AFLAGS_KERNEL = | |
306 | ||
307 | ||
308 | # Use LINUXINCLUDE when you must reference the include/ directory. | |
309 | # Needed to be compatible with the O= option | |
310 | LINUXINCLUDE := -Iinclude \ | |
2dd34b48 | 311 | $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ |
e623a3b8 | 312 | -include include/linux/autoconf.h |
1da177e4 LT |
313 | |
314 | CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) | |
315 | ||
070b98bf SR |
316 | CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
317 | -fno-strict-aliasing -fno-common | |
318 | AFLAGS := -D__ASSEMBLY__ | |
1da177e4 | 319 | |
f1d28fb0 RZ |
320 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
321 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) | |
2244cbd8 | 322 | KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) |
cb58455c | 323 | |
070b98bf SR |
324 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
325 | export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC | |
326 | export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE | |
327 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS | |
1da177e4 LT |
328 | |
329 | export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS | |
070b98bf | 330 | export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE |
1da177e4 LT |
331 | export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
332 | ||
333 | # When compiling out-of-tree modules, put MODVERDIR in the module | |
334 | # tree rather than in the kernel tree. The kernel tree might | |
335 | # even be read-only. | |
336 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions | |
337 | ||
1da177e4 LT |
338 | # Files to ignore in find ... statements |
339 | ||
406119f4 TM |
340 | 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 |
341 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git | |
1da177e4 LT |
342 | |
343 | # =========================================================================== | |
344 | # Rules shared between *config targets and build targets | |
345 | ||
346 | # Basic helpers built in scripts/ | |
4f193362 | 347 | PHONY += scripts_basic |
1da177e4 LT |
348 | scripts_basic: |
349 | $(Q)$(MAKE) $(build)=scripts/basic | |
350 | ||
cd05e6bd JB |
351 | # To avoid any implicit rule to kick in, define an empty command. |
352 | scripts/basic/%: scripts_basic ; | |
353 | ||
4f193362 | 354 | PHONY += outputmakefile |
fd5f0cd6 JB |
355 | # outputmakefile generates a Makefile in the output directory, if using a |
356 | # separate output directory. This allows convenient use of make in the | |
357 | # output directory. | |
1da177e4 | 358 | outputmakefile: |
fd5f0cd6 JB |
359 | ifneq ($(KBUILD_SRC),) |
360 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ | |
361 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) | |
362 | endif | |
1da177e4 LT |
363 | |
364 | # To make sure we do not include .config for any of the *config targets | |
365 | # catch them early, and hand them over to scripts/kconfig/Makefile | |
366 | # It is allowed to specify more targets when calling make, including | |
367 | # mixing *config targets and build targets. | |
070b98bf | 368 | # For example 'make oldconfig all'. |
1da177e4 LT |
369 | # Detect when mixed targets is specified, and make a second invocation |
370 | # of make so .config is not included in this case either (for *config). | |
371 | ||
372 | no-dot-config-targets := clean mrproper distclean \ | |
c30a02e0 | 373 | cscope TAGS tags help %docs check% \ |
667918a4 | 374 | include/linux/version.h headers_% \ |
c30a02e0 | 375 | kernelrelease kernelversion |
1da177e4 LT |
376 | |
377 | config-targets := 0 | |
378 | mixed-targets := 0 | |
379 | dot-config := 1 | |
380 | ||
381 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
382 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
383 | dot-config := 0 | |
384 | endif | |
385 | endif | |
386 | ||
387 | ifeq ($(KBUILD_EXTMOD),) | |
388 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) | |
389 | config-targets := 1 | |
390 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) | |
391 | mixed-targets := 1 | |
392 | endif | |
393 | endif | |
394 | endif | |
395 | ||
396 | ifeq ($(mixed-targets),1) | |
397 | # =========================================================================== | |
398 | # We're called with mixed targets (*config and build targets). | |
399 | # Handle them one by one. | |
400 | ||
401 | %:: FORCE | |
402 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ | |
403 | ||
404 | else | |
405 | ifeq ($(config-targets),1) | |
406 | # =========================================================================== | |
407 | # *config targets only - make sure prerequisites are updated, and descend | |
408 | # in scripts/kconfig to make the *config target | |
409 | ||
410 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. | |
411 | # KBUILD_DEFCONFIG may point out an alternative default configuration | |
412 | # used for 'make defconfig' | |
413 | include $(srctree)/arch/$(ARCH)/Makefile | |
414 | export KBUILD_DEFCONFIG | |
415 | ||
cd05e6bd | 416 | config %config: scripts_basic outputmakefile FORCE |
c955ccaf | 417 | $(Q)mkdir -p include/linux include/config |
1da177e4 LT |
418 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
419 | ||
420 | else | |
421 | # =========================================================================== | |
422 | # Build targets only - this includes vmlinux, arch specific targets, clean | |
423 | # targets and others. In general all targets except *config targets. | |
424 | ||
425 | ifeq ($(KBUILD_EXTMOD),) | |
426 | # Additional helpers built in scripts/ | |
427 | # Carefully list dependencies so we do not try to build scripts twice | |
070b98bf | 428 | # in parallel |
4f193362 | 429 | PHONY += scripts |
2e3646e5 | 430 | scripts: scripts_basic include/config/auto.conf |
1da177e4 LT |
431 | $(Q)$(MAKE) $(build)=$(@) |
432 | ||
1da177e4 LT |
433 | # Objects we will link into vmlinux / subdirs we need to visit |
434 | init-y := init/ | |
435 | drivers-y := drivers/ sound/ | |
436 | net-y := net/ | |
437 | libs-y := lib/ | |
438 | core-y := usr/ | |
439 | endif # KBUILD_EXTMOD | |
440 | ||
441 | ifeq ($(dot-config),1) | |
9ee4e336 SR |
442 | # Read in config |
443 | -include include/config/auto.conf | |
1da177e4 | 444 | |
9ee4e336 | 445 | ifeq ($(KBUILD_EXTMOD),) |
1da177e4 LT |
446 | # Read in dependencies to all Kconfig* files, make sure to run |
447 | # oldconfig if changes are detected. | |
c955ccaf | 448 | -include include/config/auto.conf.cmd |
1da177e4 | 449 | |
1da177e4 | 450 | # To avoid any implicit rule to kick in, define an empty command |
14cdd3c4 | 451 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
1da177e4 | 452 | |
c955ccaf | 453 | # If .config is newer than include/config/auto.conf, someone tinkered |
752625cf | 454 | # with it and forgot to run make oldconfig. |
070b98bf | 455 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
752625cf | 456 | # we execute the config step to be sure to catch updated Kconfig files |
14cdd3c4 | 457 | include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
1da177e4 | 458 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
3041e47e | 459 | else |
9ee4e336 SR |
460 | # external modules needs include/linux/autoconf.h and include/config/auto.conf |
461 | # but do not care if they are up-to-date. Use auto.conf to trigger the test | |
462 | PHONY += include/config/auto.conf | |
463 | ||
464 | include/config/auto.conf: | |
465 | $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \ | |
466 | echo; \ | |
467 | echo " ERROR: Kernel configuration is invalid."; \ | |
468 | echo " include/linux/autoconf.h or $@ are missing."; \ | |
469 | echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ | |
470 | echo; \ | |
471 | /bin/false) | |
472 | ||
473 | endif # KBUILD_EXTMOD | |
c955ccaf | 474 | |
1da177e4 LT |
475 | else |
476 | # Dummy target needed, because used as prerequisite | |
c955ccaf | 477 | include/config/auto.conf: ; |
9ee4e336 | 478 | endif # $(dot-config) |
1da177e4 LT |
479 | |
480 | # The all: target is the default when no target is given on the | |
481 | # command line. | |
482 | # This allow a user to issue only 'make' to build a kernel including modules | |
070b98bf | 483 | # Defaults vmlinux but it is usually overridden in the arch makefile |
1da177e4 LT |
484 | all: vmlinux |
485 | ||
486 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE | |
487 | CFLAGS += -Os | |
488 | else | |
489 | CFLAGS += -O2 | |
490 | endif | |
491 | ||
c9eca0b9 SR |
492 | include $(srctree)/arch/$(ARCH)/Makefile |
493 | ||
1da177e4 | 494 | ifdef CONFIG_FRAME_POINTER |
0030cbf0 | 495 | CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,) |
1da177e4 LT |
496 | else |
497 | CFLAGS += -fomit-frame-pointer | |
498 | endif | |
499 | ||
604bf5a2 JB |
500 | ifdef CONFIG_UNWIND_INFO |
501 | CFLAGS += -fasynchronous-unwind-tables | |
690a973f | 502 | LDFLAGS_vmlinux += --eh-frame-hdr |
604bf5a2 JB |
503 | endif |
504 | ||
1da177e4 LT |
505 | ifdef CONFIG_DEBUG_INFO |
506 | CFLAGS += -g | |
507 | endif | |
508 | ||
c9eca0b9 SR |
509 | # Force gcc to behave correct even for buggy distributions |
510 | CFLAGS += $(call cc-option, -fno-stack-protector) | |
1da177e4 | 511 | |
e8e69931 | 512 | # arch Makefile may override CC so keep this after arch Makefile is included |
e8f5bdb0 | 513 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
e8e69931 SR |
514 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
515 | ||
1da177e4 LT |
516 | # warn about C99 declaration after statement |
517 | CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) | |
518 | ||
070b98bf | 519 | # disable pointer signed / unsigned warnings in gcc 4.0 |
1da177e4 LT |
520 | CFLAGS += $(call cc-option,-Wno-pointer-sign,) |
521 | ||
522 | # Default kernel image to build when no specific target is given. | |
070b98bf | 523 | # KBUILD_IMAGE may be overruled on the command line or |
1da177e4 LT |
524 | # set in the environment |
525 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over | |
526 | # this default value | |
527 | export KBUILD_IMAGE ?= vmlinux | |
528 | ||
529 | # | |
530 | # INSTALL_PATH specifies where to place the updated kernel and system map | |
531 | # images. Default is /boot, but you can set it to other values | |
532 | export INSTALL_PATH ?= /boot | |
533 | ||
534 | # | |
535 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory | |
536 | # relocations required by build roots. This is not defined in the | |
070b98bf | 537 | # makefile but the argument can be passed to make if needed. |
1da177e4 LT |
538 | # |
539 | ||
df9df036 | 540 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4 LT |
541 | export MODLIB |
542 | ||
ac031f26 TT |
543 | # |
544 | # INSTALL_MOD_STRIP, if defined, will cause modules to be | |
545 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then | |
546 | # the default option --strip-debug will be used. Otherwise, | |
547 | # INSTALL_MOD_STRIP will used as the options to the strip command. | |
548 | ||
549 | ifdef INSTALL_MOD_STRIP | |
550 | ifeq ($(INSTALL_MOD_STRIP),1) | |
e340221a | 551 | mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26 TT |
552 | else |
553 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) | |
554 | endif # INSTALL_MOD_STRIP=1 | |
555 | else | |
556 | mod_strip_cmd = true | |
557 | endif # INSTALL_MOD_STRIP | |
558 | export mod_strip_cmd | |
559 | ||
1da177e4 LT |
560 | |
561 | ifeq ($(KBUILD_EXTMOD),) | |
3a65dfe8 | 562 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4 LT |
563 | |
564 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ | |
565 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ | |
566 | $(net-y) $(net-m) $(libs-y) $(libs-m))) | |
567 | ||
568 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ | |
569 | $(init-n) $(init-) \ | |
570 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ | |
571 | $(net-n) $(net-) $(libs-n) $(libs-)))) | |
572 | ||
573 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) | |
574 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) | |
575 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) | |
576 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) | |
577 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) | |
578 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) | |
579 | libs-y := $(libs-y1) $(libs-y2) | |
580 | ||
581 | # Build vmlinux | |
582 | # --------------------------------------------------------------------------- | |
070b98bf | 583 | # vmlinux is built from the objects selected by $(vmlinux-init) and |
1da177e4 LT |
584 | # $(vmlinux-main). Most are built-in.o files from top-level directories |
585 | # in the kernel tree, others are specified in arch/$(ARCH)Makefile. | |
586 | # Ordering when linking is important, and $(vmlinux-init) must be first. | |
587 | # | |
588 | # vmlinux | |
589 | # ^ | |
590 | # | | |
591 | # +-< $(vmlinux-init) | |
592 | # | +--< init/version.o + more | |
593 | # | | |
594 | # +--< $(vmlinux-main) | |
595 | # | +--< driver/built-in.o mm/built-in.o + more | |
596 | # | | |
597 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) | |
598 | # | |
599 | # vmlinux version (uname -v) cannot be updated during normal | |
600 | # descending-into-subdirs phase since we do not yet know if we need to | |
601 | # update vmlinux. | |
602 | # Therefore this step is delayed until just before final link of vmlinux - | |
603 | # except in the kallsyms case where it is done just before adding the | |
604 | # symbols to the kernel. | |
605 | # | |
606 | # System.map is generated to document addresses of all kernel symbols | |
607 | ||
608 | vmlinux-init := $(head-y) $(init-y) | |
609 | vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) | |
610 | vmlinux-all := $(vmlinux-init) $(vmlinux-main) | |
611 | vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds | |
612 | ||
613 | # Rule to link vmlinux - also used during CONFIG_KALLSYMS | |
614 | # May be overridden by arch/$(ARCH)/Makefile | |
615 | quiet_cmd_vmlinux__ ?= LD $@ | |
616 | cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ | |
617 | -T $(vmlinux-lds) $(vmlinux-init) \ | |
618 | --start-group $(vmlinux-main) --end-group \ | |
619 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^) | |
620 | ||
621 | # Generate new vmlinux version | |
622 | quiet_cmd_vmlinux_version = GEN .version | |
623 | cmd_vmlinux_version = set -e; \ | |
4e25d8bb JB |
624 | if [ ! -r .version ]; then \ |
625 | rm -f .version; \ | |
626 | echo 1 >.version; \ | |
627 | else \ | |
628 | mv .version .old_version; \ | |
629 | expr 0$$(cat .old_version) + 1 >.version; \ | |
630 | fi; \ | |
1da177e4 LT |
631 | $(MAKE) $(build)=init |
632 | ||
633 | # Generate System.map | |
070b98bf | 634 | quiet_cmd_sysmap = SYSMAP |
1da177e4 LT |
635 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap |
636 | ||
637 | # Link of vmlinux | |
638 | # If CONFIG_KALLSYMS is set .version is already updated | |
639 | # Generate System.map and verify that the content is consistent | |
39ca371c MR |
640 | # Use + in front of the vmlinux_version rule to silent warning with make -j2 |
641 | # First command is ':' to allow us to use + in front of the rule | |
1da177e4 | 642 | define rule_vmlinux__ |
39ca371c | 643 | : |
1da177e4 LT |
644 | $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) |
645 | ||
646 | $(call cmd,vmlinux__) | |
647 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
648 | ||
4635281c SR |
649 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
650 | echo ' $($(quiet)cmd_sysmap) System.map' &&) \ | |
651 | $(cmd_sysmap) $@ System.map; \ | |
652 | if [ $$? -ne 0 ]; then \ | |
653 | rm -f $@; \ | |
654 | /bin/false; \ | |
1da177e4 LT |
655 | fi; |
656 | $(verify_kallsyms) | |
657 | endef | |
658 | ||
659 | ||
660 | ifdef CONFIG_KALLSYMS | |
661 | # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) | |
662 | # It's a three stage process: | |
663 | # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is | |
664 | # empty | |
665 | # Running kallsyms on that gives us .tmp_kallsyms1.o with | |
666 | # the right size - vmlinux version (uname -v) is updated during this step | |
667 | # o .tmp_vmlinux2 now has a __kallsyms section of the right size, | |
668 | # but due to the added section, some addresses have shifted. | |
669 | # From here, we generate a correct .tmp_kallsyms2.o | |
670 | # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. | |
671 | # o Verify that the System.map from vmlinux matches the map from | |
672 | # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. | |
673 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using | |
674 | # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a | |
675 | # temporary bypass to allow the kernel to be built while the | |
676 | # maintainers work out what went wrong with kallsyms. | |
677 | ||
678 | ifdef CONFIG_KALLSYMS_EXTRA_PASS | |
679 | last_kallsyms := 3 | |
680 | else | |
681 | last_kallsyms := 2 | |
682 | endif | |
683 | ||
684 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o | |
685 | ||
686 | define verify_kallsyms | |
4635281c SR |
687 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
688 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ | |
1da177e4 | 689 | $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map |
4635281c SR |
690 | $(Q)cmp -s System.map .tmp_System.map || \ |
691 | (echo Inconsistent kallsyms data; \ | |
692 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ | |
1da177e4 LT |
693 | rm .tmp_kallsyms* ; /bin/false ) |
694 | endef | |
695 | ||
696 | # Update vmlinux version before link | |
697 | # Use + in front of this rule to silent warning about make -j1 | |
72ba47c1 | 698 | # First command is ':' to allow us to use + in front of this rule |
1da177e4 LT |
699 | cmd_ksym_ld = $(cmd_vmlinux__) |
700 | define rule_ksym_ld | |
72ba47c1 | 701 | : |
1da177e4 LT |
702 | +$(call cmd,vmlinux_version) |
703 | $(call cmd,vmlinux__) | |
704 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
705 | endef | |
706 | ||
707 | # Generate .S file with all kernel symbols | |
708 | quiet_cmd_kallsyms = KSYM $@ | |
709 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ | |
710 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ | |
711 | ||
712 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE | |
713 | $(call if_changed_dep,as_o_S) | |
714 | ||
715 | .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) | |
716 | $(call cmd,kallsyms) | |
717 | ||
718 | # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version | |
719 | .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE | |
720 | $(call if_changed_rule,ksym_ld) | |
721 | ||
722 | .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE | |
723 | $(call if_changed,vmlinux__) | |
724 | ||
725 | .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE | |
726 | $(call if_changed,vmlinux__) | |
727 | ||
728 | # Needs to visit scripts/ before $(KALLSYMS) can be used. | |
729 | $(KALLSYMS): scripts ; | |
730 | ||
33bc25ea SR |
731 | # Generate some data for debugging strange kallsyms problems |
732 | debug_kallsyms: .tmp_map$(last_kallsyms) | |
733 | ||
734 | .tmp_map%: .tmp_vmlinux% FORCE | |
735 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ | |
736 | ||
737 | .tmp_map3: .tmp_map2 | |
738 | ||
739 | .tmp_map2: .tmp_map1 | |
740 | ||
1da177e4 LT |
741 | endif # ifdef CONFIG_KALLSYMS |
742 | ||
743 | # vmlinux image - including updated kernel symbols | |
744 | vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE | |
0f836e5f | 745 | ifdef CONFIG_HEADERS_CHECK |
0e7af8d0 | 746 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
0f836e5f | 747 | endif |
1da177e4 | 748 | $(call if_changed_rule,vmlinux__) |
12715d20 | 749 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ |
4e25d8bb | 750 | $(Q)rm -f .old_version |
1da177e4 LT |
751 | |
752 | # The actual objects are generated when descending, | |
753 | # make sure no implicit rule kicks in | |
754 | $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; | |
755 | ||
756 | # Handle descending into subdirectories listed in $(vmlinux-dirs) | |
757 | # Preset locale variables to speed up the build process. Limit locale | |
758 | # tweaks to this spot to avoid wrong language settings when running | |
759 | # make menuconfig etc. | |
760 | # Error messages still appears in the original language | |
761 | ||
4f193362 | 762 | PHONY += $(vmlinux-dirs) |
5bb78269 | 763 | $(vmlinux-dirs): prepare scripts |
1da177e4 LT |
764 | $(Q)$(MAKE) $(build)=$@ |
765 | ||
cb58455c | 766 | # Build the kernel release string |
cb58455c | 767 | # |
1ef98856 RD |
768 | # The KERNELRELEASE value built here is stored in the file |
769 | # include/config/kernel.release, and is used when executing several | |
770 | # make targets, such as "make install" or "make modules_install." | |
771 | # | |
772 | # The eventual kernel release string consists of the following fields, | |
773 | # shown in a hierarchical format to show how smaller parts are concatenated | |
774 | # to form the larger and final value, with values coming from places like | |
775 | # the Makefile, kernel config options, make command line options and/or | |
776 | # SCM tag information. | |
777 | # | |
778 | # $(KERNELVERSION) | |
779 | # $(VERSION) eg, 2 | |
780 | # $(PATCHLEVEL) eg, 6 | |
781 | # $(SUBLEVEL) eg, 18 | |
782 | # $(EXTRAVERSION) eg, -rc6 | |
783 | # $(localver-full) | |
784 | # $(localver) | |
785 | # localversion* (all localversion* files) | |
786 | # $(CONFIG_LOCALVERSION) (from kernel config setting) | |
787 | # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set) | |
788 | # ./scripts/setlocalversion (SCM tag, if one exists) | |
789 | # $(LOCALVERSION) (from make command line if provided) | |
790 | # | |
791 | # Note how the final $(localver-auto) string is included *only* if the | |
792 | # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the | |
793 | # moment, only git is supported but other SCMs can edit the script | |
794 | # scripts/setlocalversion and add the appropriate checks as needed. | |
cb58455c SR |
795 | |
796 | nullstring := | |
797 | space := $(nullstring) # end of line | |
798 | ||
799 | ___localver = $(objtree)/localversion* $(srctree)/localversion* | |
800 | __localver = $(sort $(wildcard $(___localver))) | |
801 | # skip backup files (containing '~') | |
802 | _localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f))) | |
803 | ||
804 | localver = $(subst $(space),, \ | |
805 | $(shell cat /dev/null $(_localver)) \ | |
806 | $(patsubst "%",%,$(CONFIG_LOCALVERSION))) | |
070b98bf | 807 | |
cb58455c SR |
808 | # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called |
809 | # and if the SCM is know a tag from the SCM is appended. | |
070b98bf | 810 | # The appended tag is determined by the SCM used. |
cb58455c SR |
811 | # |
812 | # Currently, only git is supported. | |
813 | # Other SCMs can edit scripts/setlocalversion and add the appropriate | |
814 | # checks as needed. | |
815 | ifdef CONFIG_LOCALVERSION_AUTO | |
816 | _localver-auto = $(shell $(CONFIG_SHELL) \ | |
817 | $(srctree)/scripts/setlocalversion $(srctree)) | |
818 | localver-auto = $(LOCALVERSION)$(_localver-auto) | |
819 | endif | |
820 | ||
821 | localver-full = $(localver)$(localver-auto) | |
822 | ||
f1d28fb0 | 823 | # Store (new) KERNELRELASE string in include/config/kernel.release |
2244cbd8 | 824 | kernelrelease = $(KERNELVERSION)$(localver-full) |
f1d28fb0 | 825 | include/config/kernel.release: include/config/auto.conf FORCE |
2244cbd8 SR |
826 | $(Q)rm -f $@ |
827 | $(Q)echo $(kernelrelease) > $@ | |
cb58455c SR |
828 | |
829 | ||
1da177e4 | 830 | # Things we need to do before we recursively start building the kernel |
5bb78269 SR |
831 | # or the modules are listed in "prepare". |
832 | # A multi level approach is used. prepareN is processed before prepareN-1. | |
833 | # archprepare is used in arch Makefiles and when processed asm symlink, | |
834 | # version.h and scripts_basic is processed / created. | |
1da177e4 | 835 | |
5bb78269 | 836 | # Listed in dependency order |
4f193362 | 837 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb78269 SR |
838 | |
839 | # prepare-all is deprecated, use prepare as valid replacement | |
4f193362 | 840 | PHONY += prepare-all |
1da177e4 | 841 | |
86feeaa8 | 842 | # prepare3 is used to check if we are building in a separate output directory, |
1da177e4 LT |
843 | # and if so do: |
844 | # 1) Check that make has not been executed in the kernel src $(srctree) | |
845 | # 2) Create the include2 directory, used for the second asm symlink | |
f1d28fb0 | 846 | prepare3: include/config/kernel.release |
1da177e4 LT |
847 | ifneq ($(KBUILD_SRC),) |
848 | @echo ' Using $(srctree) as source for kernel' | |
c955ccaf | 849 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
1da177e4 LT |
850 | echo " $(srctree) is not clean, please run 'make mrproper'";\ |
851 | echo " in the '$(srctree)' directory.";\ | |
852 | /bin/false; \ | |
853 | fi; | |
854 | $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; | |
855 | $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm | |
856 | endif | |
857 | ||
86feeaa8 SR |
858 | # prepare2 creates a makefile if using a separate output directory |
859 | prepare2: prepare3 outputmakefile | |
1da177e4 | 860 | |
63104eec SR |
861 | prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \ |
862 | include/asm include/config/auto.conf | |
1da177e4 | 863 | ifneq ($(KBUILD_MODULES),) |
1da177e4 | 864 | $(Q)mkdir -p $(MODVERDIR) |
fca1dff2 | 865 | $(Q)rm -f $(MODVERDIR)/* |
1da177e4 LT |
866 | endif |
867 | ||
5bb78269 SR |
868 | archprepare: prepare1 scripts_basic |
869 | ||
870 | prepare0: archprepare FORCE | |
8d36a623 | 871 | $(Q)$(MAKE) $(build)=. |
86feeaa8 | 872 | |
1da177e4 | 873 | # All the preparing.. |
5bb78269 | 874 | prepare prepare-all: prepare0 |
1da177e4 | 875 | |
070b98bf SR |
876 | # Leave this as default for preprocessing vmlinux.lds.S, which is now |
877 | # done in arch/$(ARCH)/kernel/Makefile | |
1da177e4 LT |
878 | |
879 | export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) | |
880 | ||
070b98bf SR |
881 | # FIXME: The asm symlink changes when $(ARCH) changes. That's |
882 | # hard to detect, but I suppose "make mrproper" is a good idea | |
883 | # before switching between archs anyway. | |
1da177e4 LT |
884 | |
885 | include/asm: | |
886 | @echo ' SYMLINK $@ -> include/asm-$(ARCH)' | |
887 | $(Q)if [ ! -d include ]; then mkdir -p include; fi; | |
888 | @ln -fsn asm-$(ARCH) $@ | |
889 | ||
1da177e4 LT |
890 | # Generate some files |
891 | # --------------------------------------------------------------------------- | |
892 | ||
893 | # KERNELRELEASE can change from a few different places, meaning version.h | |
894 | # needs to be updated, so this check is forced on all builds | |
895 | ||
896 | uts_len := 64 | |
63104eec SR |
897 | define filechk_utsrelease.h |
898 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ | |
899 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ | |
900 | exit 1; \ | |
901 | fi; \ | |
902 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) | |
903 | endef | |
1da177e4 LT |
904 | |
905 | define filechk_version.h | |
63104eec SR |
906 | (echo \#define LINUX_VERSION_CODE $(shell \ |
907 | expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ | |
908 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) | |
1da177e4 LT |
909 | endef |
910 | ||
63104eec | 911 | include/linux/version.h: $(srctree)/Makefile FORCE |
1da177e4 LT |
912 | $(call filechk,version.h) |
913 | ||
63104eec SR |
914 | include/linux/utsrelease.h: include/config/kernel.release FORCE |
915 | $(call filechk,utsrelease.h) | |
916 | ||
1da177e4 LT |
917 | # --------------------------------------------------------------------------- |
918 | ||
4f193362 | 919 | PHONY += depend dep |
1da177e4 LT |
920 | depend dep: |
921 | @echo '*** Warning: make $@ is unnecessary now.' | |
922 | ||
8d730cfb DW |
923 | # --------------------------------------------------------------------------- |
924 | # Kernel headers | |
1ab7a1f3 | 925 | INSTALL_HDR_PATH=$(objtree)/usr |
8d730cfb DW |
926 | export INSTALL_HDR_PATH |
927 | ||
6d716275 DW |
928 | HDRARCHES=$(filter-out generic,$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild))) |
929 | ||
930 | PHONY += headers_install_all | |
398477d4 LT |
931 | headers_install_all: include/linux/version.h scripts_basic FORCE |
932 | $(Q)$(MAKE) $(build)=scripts scripts/unifdef | |
6d716275 | 933 | $(Q)for arch in $(HDRARCHES); do \ |
398477d4 | 934 | $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch ;\ |
6d716275 DW |
935 | done |
936 | ||
8d730cfb | 937 | PHONY += headers_install |
07aea3a7 | 938 | headers_install: include/linux/version.h scripts_basic FORCE |
0e7af8d0 | 939 | @if [ ! -r $(srctree)/include/asm-$(ARCH)/Kbuild ]; then \ |
f17b7bad DW |
940 | echo '*** Error: Headers not exportable for this architecture ($(ARCH))'; \ |
941 | exit 1 ; fi | |
07aea3a7 | 942 | $(Q)$(MAKE) $(build)=scripts scripts/unifdef |
b805aa0e | 943 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include |
8d730cfb | 944 | |
68475359 DW |
945 | PHONY += headers_check |
946 | headers_check: headers_install | |
b805aa0e | 947 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1 |
68475359 | 948 | |
1da177e4 LT |
949 | # --------------------------------------------------------------------------- |
950 | # Modules | |
951 | ||
952 | ifdef CONFIG_MODULES | |
953 | ||
070b98bf | 954 | # By default, build modules as well |
1da177e4 LT |
955 | |
956 | all: modules | |
957 | ||
958 | # Build modules | |
959 | ||
4f193362 | 960 | PHONY += modules |
1da177e4 LT |
961 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) |
962 | @echo ' Building modules, stage 2.'; | |
b805aa0e | 963 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4 LT |
964 | |
965 | ||
966 | # Target to prepare building external modules | |
4f193362 | 967 | PHONY += modules_prepare |
5bb78269 | 968 | modules_prepare: prepare scripts |
1da177e4 LT |
969 | |
970 | # Target to install modules | |
4f193362 | 971 | PHONY += modules_install |
1da177e4 LT |
972 | modules_install: _modinst_ _modinst_post |
973 | ||
4f193362 | 974 | PHONY += _modinst_ |
1da177e4 | 975 | _modinst_: |
ce454d4d | 976 | @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ |
1da177e4 LT |
977 | echo "Warning: you may need to install module-init-tools"; \ |
978 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ | |
979 | sleep 1; \ | |
980 | fi | |
981 | @rm -rf $(MODLIB)/kernel | |
982 | @rm -f $(MODLIB)/source | |
983 | @mkdir -p $(MODLIB)/kernel | |
984 | @ln -s $(srctree) $(MODLIB)/source | |
985 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ | |
986 | rm -f $(MODLIB)/build ; \ | |
987 | ln -s $(objtree) $(MODLIB)/build ; \ | |
988 | fi | |
b805aa0e | 989 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 LT |
990 | |
991 | # If System.map exists, run depmod. This deliberately does not have a | |
992 | # dependency on System.map since that would run the dependency tree on | |
993 | # vmlinux. This depmod is only for convenience to give the initial | |
994 | # boot a modules.dep even before / is mounted read-write. However the | |
995 | # boot script depmod is the master version. | |
996 | ifeq "$(strip $(INSTALL_MOD_PATH))" "" | |
997 | depmod_opts := | |
998 | else | |
999 | depmod_opts := -b $(INSTALL_MOD_PATH) -r | |
1000 | endif | |
4f193362 | 1001 | PHONY += _modinst_post |
1da177e4 LT |
1002 | _modinst_post: _modinst_ |
1003 | if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi | |
1004 | ||
1005 | else # CONFIG_MODULES | |
1006 | ||
1007 | # Modules not configured | |
1008 | # --------------------------------------------------------------------------- | |
1009 | ||
1010 | modules modules_install: FORCE | |
1011 | @echo | |
1012 | @echo "The present kernel configuration has modules disabled." | |
1013 | @echo "Type 'make config' and enable loadable module support." | |
1014 | @echo "Then build a kernel with module support enabled." | |
1015 | @echo | |
1016 | @exit 1 | |
1017 | ||
1018 | endif # CONFIG_MODULES | |
1019 | ||
1da177e4 LT |
1020 | ### |
1021 | # Cleaning is done on three levels. | |
1022 | # make clean Delete most generated files | |
1023 | # Leave enough to build external modules | |
1024 | # make mrproper Delete the current configuration, and all generated files | |
1025 | # make distclean Remove editor backup files, patch leftover files and the like | |
1026 | ||
1027 | # Directories & files removed with 'make clean' | |
1028 | CLEAN_DIRS += $(MODVERDIR) | |
1029 | CLEAN_FILES += vmlinux System.map \ | |
1030 | .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map | |
1031 | ||
1032 | # Directories & files removed with 'make mrproper' | |
1ab7a1f3 | 1033 | MRPROPER_DIRS += include/config include2 usr/include |
50aa88e2 | 1034 | MRPROPER_FILES += .config .config.old include/asm .version .old_version \ |
63104eec SR |
1035 | include/linux/autoconf.h include/linux/version.h \ |
1036 | include/linux/utsrelease.h \ | |
f1d28fb0 | 1037 | Module.symvers tags TAGS cscope* |
1da177e4 LT |
1038 | |
1039 | # clean - Delete most, but leave enough to build external modules | |
1040 | # | |
1041 | clean: rm-dirs := $(CLEAN_DIRS) | |
1042 | clean: rm-files := $(CLEAN_FILES) | |
86feeaa8 | 1043 | clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs)) |
1da177e4 | 1044 | |
4f193362 | 1045 | PHONY += $(clean-dirs) clean archclean |
1da177e4 LT |
1046 | $(clean-dirs): |
1047 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1048 | ||
1049 | clean: archclean $(clean-dirs) | |
1050 | $(call cmd,rmdirs) | |
1051 | $(call cmd,rmfiles) | |
1052 | @find . $(RCS_FIND_IGNORE) \ | |
070b98bf | 1053 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
15fde675 AG |
1054 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
1055 | -o -name '*.symtypes' \) \ | |
1da177e4 LT |
1056 | -type f -print | xargs rm -f |
1057 | ||
1058 | # mrproper - Delete all generated files, including .config | |
1059 | # | |
1060 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) | |
1061 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) | |
1062 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) | |
1063 | ||
4f193362 | 1064 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4 LT |
1065 | $(mrproper-dirs): |
1066 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) | |
1067 | ||
1068 | mrproper: clean archmrproper $(mrproper-dirs) | |
1069 | $(call cmd,rmdirs) | |
1070 | $(call cmd,rmfiles) | |
1071 | ||
1072 | # distclean | |
1073 | # | |
4f193362 | 1074 | PHONY += distclean |
1da177e4 LT |
1075 | |
1076 | distclean: mrproper | |
1077 | @find $(srctree) $(RCS_FIND_IGNORE) \ | |
070b98bf | 1078 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1da177e4 | 1079 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
070b98bf | 1080 | -o -name '.*.rej' -o -size 0 \ |
1da177e4 LT |
1081 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
1082 | -type f -print | xargs rm -f | |
1083 | ||
1084 | ||
1085 | # Packaging of the kernel to various formats | |
1086 | # --------------------------------------------------------------------------- | |
1087 | # rpm target kept for backward compatibility | |
1088 | package-dir := $(srctree)/scripts/package | |
1089 | ||
031ecc6d | 1090 | %pkg: include/config/kernel.release FORCE |
6c2133e1 | 1091 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6d | 1092 | rpm: include/config/kernel.release FORCE |
6c2133e1 | 1093 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4 LT |
1094 | |
1095 | ||
1096 | # Brief documentation of the typical targets used | |
1097 | # --------------------------------------------------------------------------- | |
1098 | ||
1099 | boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) | |
1100 | boards := $(notdir $(boards)) | |
1101 | ||
1102 | help: | |
1103 | @echo 'Cleaning targets:' | |
5cc8d246 JJ |
1104 | @echo ' clean - remove most generated files but keep the config and' |
1105 | @echo ' enough build support to build external modules' | |
1da177e4 | 1106 | @echo ' mrproper - remove all generated files + config + various backup files' |
5cc8d246 | 1107 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4 LT |
1108 | @echo '' |
1109 | @echo 'Configuration targets:' | |
1110 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help | |
1111 | @echo '' | |
1112 | @echo 'Other generic targets:' | |
1113 | @echo ' all - Build all targets marked with [*]' | |
1114 | @echo '* vmlinux - Build the bare kernel' | |
1115 | @echo '* modules - Build all modules' | |
9cc5d74c | 1116 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
1da177e4 LT |
1117 | @echo ' dir/ - Build all files in dir and below' |
1118 | @echo ' dir/file.[ois] - Build specified target only' | |
155ad605 | 1119 | @echo ' dir/file.ko - Build module including final link' |
1da177e4 LT |
1120 | @echo ' rpm - Build a kernel as an RPM package' |
1121 | @echo ' tags/TAGS - Generate tags file for editors' | |
1122 | @echo ' cscope - Generate cscope index' | |
6d128842 | 1123 | @echo ' kernelrelease - Output the release version string' |
cb58455c | 1124 | @echo ' kernelversion - Output the version stored in Makefile' |
f17b7bad DW |
1125 | @if [ -r include/asm-$(ARCH)/Kbuild ]; then \ |
1126 | echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ | |
1127 | fi | |
1ab7a1f3 | 1128 | @echo ' (default: $(INSTALL_HDR_PATH))' |
1da177e4 LT |
1129 | @echo '' |
1130 | @echo 'Static analysers' | |
1da177e4 LT |
1131 | @echo ' checkstack - Generate a list of stack hogs' |
1132 | @echo ' namespacecheck - Name space analysis on compiled kernel' | |
f17b7bad DW |
1133 | @if [ -r include/asm-$(ARCH)/Kbuild ]; then \ |
1134 | echo ' headers_check - Sanity check on exported headers'; \ | |
1135 | fi | |
1da177e4 LT |
1136 | @echo '' |
1137 | @echo 'Kernel packaging:' | |
6c2133e1 | 1138 | @$(MAKE) $(build)=$(package-dir) help |
1da177e4 LT |
1139 | @echo '' |
1140 | @echo 'Documentation targets:' | |
1141 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp | |
1142 | @echo '' | |
1143 | @echo 'Architecture specific targets ($(ARCH)):' | |
1144 | @$(if $(archhelp),$(archhelp),\ | |
1145 | echo ' No architecture specific help defined for $(ARCH)') | |
1146 | @echo '' | |
1147 | @$(if $(boards), \ | |
1148 | $(foreach b, $(boards), \ | |
1149 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ | |
1150 | echo '') | |
1151 | ||
1152 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' | |
45d506bd | 1153 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4 | 1154 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
701842e3 DK |
1155 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
1156 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' | |
1da177e4 LT |
1157 | @echo '' |
1158 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' | |
1159 | @echo 'For further info see the ./README file' | |
1160 | ||
1161 | ||
1162 | # Documentation targets | |
1163 | # --------------------------------------------------------------------------- | |
1164 | %docs: scripts_basic FORCE | |
1165 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ | |
1166 | ||
1167 | else # KBUILD_EXTMOD | |
1168 | ||
1169 | ### | |
1170 | # External module support. | |
1171 | # When building external modules the kernel used as basis is considered | |
1172 | # read-only, and no consistency checks are made and the make | |
1173 | # system is not used on the basis kernel. If updates are required | |
1174 | # in the basis kernel ordinary make commands (without M=...) must | |
1175 | # be used. | |
1176 | # | |
1177 | # The following are the only valid targets when building external | |
1178 | # modules. | |
1179 | # make M=dir clean Delete all automatically generated files | |
1180 | # make M=dir modules Make all modules in specified dir | |
1181 | # make M=dir Same as 'make M=dir modules' | |
1182 | # make M=dir modules_install | |
070b98bf | 1183 | # Install the modules built in the module directory |
1da177e4 LT |
1184 | # Assumes install directory is already created |
1185 | ||
1186 | # We are always building modules | |
1187 | KBUILD_MODULES := 1 | |
4f193362 | 1188 | PHONY += crmodverdir |
1da177e4 LT |
1189 | crmodverdir: |
1190 | $(Q)mkdir -p $(MODVERDIR) | |
fca1dff2 | 1191 | $(Q)rm -f $(MODVERDIR)/* |
1da177e4 | 1192 | |
4f193362 | 1193 | PHONY += $(objtree)/Module.symvers |
1da177e4 LT |
1194 | $(objtree)/Module.symvers: |
1195 | @test -e $(objtree)/Module.symvers || ( \ | |
1196 | echo; \ | |
1197 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ | |
1198 | echo " is missing; modules will have no dependencies and modversions."; \ | |
1199 | echo ) | |
1200 | ||
1201 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) | |
4f193362 | 1202 | PHONY += $(module-dirs) modules |
1da177e4 LT |
1203 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1204 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) | |
1205 | ||
1206 | modules: $(module-dirs) | |
1207 | @echo ' Building modules, stage 2.'; | |
b805aa0e | 1208 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4 | 1209 | |
4f193362 | 1210 | PHONY += modules_install |
a67dc21a | 1211 | modules_install: _emodinst_ _emodinst_post |
e6304663 | 1212 | |
4f193362 PS |
1213 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1214 | PHONY += _emodinst_ | |
a67dc21a | 1215 | _emodinst_: |
a67dc21a | 1216 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e | 1217 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1218 | |
a67dc21a SR |
1219 | # Run depmod only is we have System.map and depmod is executable |
1220 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) | |
1221 | cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \ | |
1222 | $(DEPMOD) -ae -F System.map \ | |
1223 | $(if $(strip $(INSTALL_MOD_PATH)), \ | |
1224 | -b $(INSTALL_MOD_PATH) -r) \ | |
1225 | $(KERNELRELEASE); \ | |
1226 | fi | |
1227 | ||
4f193362 | 1228 | PHONY += _emodinst_post |
a67dc21a SR |
1229 | _emodinst_post: _emodinst_ |
1230 | $(call cmd,depmod) | |
1231 | ||
1da177e4 LT |
1232 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1233 | ||
4f193362 | 1234 | PHONY += $(clean-dirs) clean |
1da177e4 LT |
1235 | $(clean-dirs): |
1236 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1237 | ||
1238 | clean: rm-dirs := $(MODVERDIR) | |
1239 | clean: $(clean-dirs) | |
1240 | $(call cmd,rmdirs) | |
1241 | @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ | |
070b98bf | 1242 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
1da177e4 LT |
1243 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ |
1244 | -type f -print | xargs rm -f | |
1245 | ||
1246 | help: | |
1247 | @echo ' Building external modules.' | |
1248 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' | |
1249 | @echo '' | |
1250 | @echo ' modules - default target, build the module(s)' | |
1251 | @echo ' modules_install - install the module' | |
1252 | @echo ' clean - remove generated files in module directory only' | |
1253 | @echo '' | |
06300b21 SR |
1254 | |
1255 | # Dummies... | |
4f193362 | 1256 | PHONY += prepare scripts |
06300b21 SR |
1257 | prepare: ; |
1258 | scripts: ; | |
1da177e4 LT |
1259 | endif # KBUILD_EXTMOD |
1260 | ||
1261 | # Generate tags for editors | |
1262 | # --------------------------------------------------------------------------- | |
1263 | ||
1264 | #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set | |
1265 | #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file. | |
1266 | #Adding $(srctree) adds about 20M on i386 to the size of the output file! | |
1267 | ||
f182ae62 | 1268 | ifeq ($(src),$(obj)) |
1da177e4 LT |
1269 | __srctree = |
1270 | else | |
1271 | __srctree = $(srctree)/ | |
1272 | endif | |
1273 | ||
2ab23c95 PBG |
1274 | ifeq ($(ALLSOURCE_ARCHS),) |
1275 | ifeq ($(ARCH),um) | |
1276 | ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH) | |
1277 | else | |
1278 | ALLINCLUDE_ARCHS := $(ARCH) | |
1279 | endif | |
1280 | else | |
070b98bf | 1281 | #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour. |
2ab23c95 PBG |
1282 | ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS) |
1283 | endif | |
1284 | ||
a0674e88 IC |
1285 | ALLSOURCE_ARCHS := $(ARCH) |
1286 | ||
e838db68 MY |
1287 | define find-sources |
1288 | ( find $(__srctree) $(RCS_FIND_IGNORE) \ | |
1da177e4 | 1289 | \( -name include -o -name arch \) -prune -o \ |
e838db68 | 1290 | -name $1 -print; \ |
a0674e88 IC |
1291 | for ARCH in $(ALLSOURCE_ARCHS) ; do \ |
1292 | find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \ | |
e838db68 | 1293 | -name $1 -print; \ |
a0674e88 | 1294 | done ; \ |
1da177e4 | 1295 | find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \ |
e838db68 | 1296 | -name $1 -print; \ |
1da177e4 LT |
1297 | find $(__srctree)include $(RCS_FIND_IGNORE) \ |
1298 | \( -name config -o -name 'asm-*' \) -prune \ | |
e838db68 | 1299 | -o -name $1 -print; \ |
2ab23c95 | 1300 | for ARCH in $(ALLINCLUDE_ARCHS) ; do \ |
a0674e88 | 1301 | find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \ |
e838db68 | 1302 | -name $1 -print; \ |
a0674e88 | 1303 | done ; \ |
1da177e4 | 1304 | find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ |
e838db68 MY |
1305 | -name $1 -print ) |
1306 | endef | |
1307 | ||
1308 | define all-sources | |
1309 | $(call find-sources,'*.[chS]') | |
1310 | endef | |
1311 | define all-kconfigs | |
1312 | $(call find-sources,'Kconfig*') | |
1313 | endef | |
1314 | define all-defconfigs | |
1315 | $(call find-sources,'defconfig') | |
1da177e4 LT |
1316 | endef |
1317 | ||
da7c0408 AG |
1318 | define xtags |
1319 | if $1 --version 2>&1 | grep -iq exuberant; then \ | |
1320 | $(all-sources) | xargs $1 -a \ | |
1321 | -I __initdata,__exitdata,__acquires,__releases \ | |
1322 | -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ | |
91b943ee AK |
1323 | --extra=+f --c-kinds=+px \ |
1324 | --regex-asm='/ENTRY\(([^)]*)\).*/\1/'; \ | |
da7c0408 AG |
1325 | $(all-kconfigs) | xargs $1 -a \ |
1326 | --langdef=kconfig \ | |
1327 | --language-force=kconfig \ | |
1328 | --regex-kconfig='/^[[:blank:]]*config[[:blank:]]+([[:alnum:]_]+)/\1/'; \ | |
18e39913 | 1329 | $(all-defconfigs) | xargs -r $1 -a \ |
da7c0408 AG |
1330 | --langdef=dotconfig \ |
1331 | --language-force=dotconfig \ | |
1332 | --regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'; \ | |
1333 | elif $1 --version 2>&1 | grep -iq emacs; then \ | |
1334 | $(all-sources) | xargs $1 -a; \ | |
1335 | $(all-kconfigs) | xargs $1 -a \ | |
1336 | --regex='/^[ \t]*config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \ | |
18e39913 | 1337 | $(all-defconfigs) | xargs -r $1 -a \ |
da7c0408 AG |
1338 | --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \ |
1339 | else \ | |
1340 | $(all-sources) | xargs $1 -a; \ | |
1341 | fi | |
1342 | endef | |
1343 | ||
1da177e4 | 1344 | quiet_cmd_cscope-file = FILELST cscope.files |
acbef459 | 1345 | cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files |
1da177e4 LT |
1346 | |
1347 | quiet_cmd_cscope = MAKE cscope.out | |
acbef459 | 1348 | cmd_cscope = cscope -b |
1da177e4 LT |
1349 | |
1350 | cscope: FORCE | |
1351 | $(call cmd,cscope-file) | |
1352 | $(call cmd,cscope) | |
1353 | ||
1354 | quiet_cmd_TAGS = MAKE $@ | |
66d609ec SR |
1355 | define cmd_TAGS |
1356 | rm -f $@; \ | |
da7c0408 | 1357 | $(call xtags,etags) |
66d609ec SR |
1358 | endef |
1359 | ||
1360 | TAGS: FORCE | |
1361 | $(call cmd,TAGS) | |
1da177e4 | 1362 | |
1da177e4 LT |
1363 | quiet_cmd_tags = MAKE $@ |
1364 | define cmd_tags | |
1365 | rm -f $@; \ | |
da7c0408 | 1366 | $(call xtags,ctags) |
1da177e4 LT |
1367 | endef |
1368 | ||
1da177e4 LT |
1369 | tags: FORCE |
1370 | $(call cmd,tags) | |
1371 | ||
1372 | ||
1373 | # Scripts to check various things for consistency | |
1374 | # --------------------------------------------------------------------------- | |
1375 | ||
1da177e4 LT |
1376 | includecheck: |
1377 | find * $(RCS_FIND_IGNORE) \ | |
1378 | -name '*.[hcS]' -type f -print | sort \ | |
1379 | | xargs $(PERL) -w scripts/checkincludes.pl | |
1380 | ||
1381 | versioncheck: | |
1382 | find * $(RCS_FIND_IGNORE) \ | |
1383 | -name '*.[hcS]' -type f -print | sort \ | |
1384 | | xargs $(PERL) -w scripts/checkversion.pl | |
1385 | ||
1da177e4 LT |
1386 | namespacecheck: |
1387 | $(PERL) $(srctree)/scripts/namespace.pl | |
1388 | ||
1389 | endif #ifeq ($(config-targets),1) | |
1390 | endif #ifeq ($(mixed-targets),1) | |
1391 | ||
c30a02e0 | 1392 | PHONY += checkstack kernelrelease kernelversion |
e3ccf6e3 JD |
1393 | |
1394 | # Use $(SUBARCH) here instead of $(ARCH) so that this works for UML. | |
1395 | # In the UML case, $(SUBARCH) is the name of the underlying | |
1396 | # architecture, while for all other arches, it is the same as $(ARCH). | |
1da177e4 LT |
1397 | checkstack: |
1398 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ | |
e3ccf6e3 | 1399 | $(PERL) $(src)/scripts/checkstack.pl $(SUBARCH) |
1da177e4 LT |
1400 | |
1401 | kernelrelease: | |
f1d28fb0 RZ |
1402 | $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ |
1403 | $(error kernelrelease not valid - run 'make prepare' to update it)) | |
cb58455c | 1404 | kernelversion: |
2244cbd8 | 1405 | @echo $(KERNELVERSION) |
1da177e4 | 1406 | |
06300b21 SR |
1407 | # Single targets |
1408 | # --------------------------------------------------------------------------- | |
bc2546a6 SR |
1409 | # Single targets are compatible with: |
1410 | # - build whith mixed source and output | |
1411 | # - build with separate output dir 'make O=...' | |
1412 | # - external modules | |
1413 | # | |
1414 | # target-dir => where to store outputfile | |
1415 | # build-dir => directory in kernel source tree to use | |
1416 | ||
1417 | ifeq ($(KBUILD_EXTMOD),) | |
aa360879 | 1418 | build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a6 SR |
1419 | target-dir = $(dir $@) |
1420 | else | |
1421 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) | |
1422 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) | |
1423 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) | |
1424 | endif | |
1425 | ||
f6ecebd6 | 1426 | %.s: %.c prepare scripts FORCE |
bc2546a6 | 1427 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1428 | %.i: %.c prepare scripts FORCE |
bc2546a6 | 1429 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1430 | %.o: %.c prepare scripts FORCE |
bc2546a6 | 1431 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1432 | %.lst: %.c prepare scripts FORCE |
bc2546a6 | 1433 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1434 | %.s: %.S prepare scripts FORCE |
bc2546a6 | 1435 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1436 | %.o: %.S prepare scripts FORCE |
bc2546a6 | 1437 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde675 AG |
1438 | %.symtypes: %.c prepare scripts FORCE |
1439 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | |
06300b21 | 1440 | |
bc2546a6 SR |
1441 | # Modules |
1442 | / %/: prepare scripts FORCE | |
06300b21 | 1443 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 SR |
1444 | $(build)=$(build-dir) |
1445 | %.ko: prepare scripts FORCE | |
06300b21 | 1446 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 | 1447 | $(build)=$(build-dir) $(@:.ko=.o) |
b805aa0e | 1448 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21 | 1449 | |
1da177e4 LT |
1450 | # FIXME Should go into a make.lib or something |
1451 | # =========================================================================== | |
1452 | ||
1453 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) | |
1454 | cmd_rmdirs = rm -rf $(rm-dirs) | |
1455 | ||
1456 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) | |
1457 | cmd_rmfiles = rm -f $(rm-files) | |
1458 | ||
1459 | ||
1460 | a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \ | |
1461 | $(NOSTDINC_FLAGS) $(CPPFLAGS) \ | |
5e8d780d | 1462 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) |
1da177e4 LT |
1463 | |
1464 | quiet_cmd_as_o_S = AS $@ | |
1465 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< | |
1466 | ||
1467 | # read all saved command lines | |
1468 | ||
1469 | targets := $(wildcard $(sort $(targets))) | |
1470 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | |
1471 | ||
1472 | ifneq ($(cmd_files),) | |
1473 | $(cmd_files): ; # Do not try to update included dependency files | |
1474 | include $(cmd_files) | |
1475 | endif | |
1476 | ||
1da177e4 LT |
1477 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
1478 | # Usage: | |
1479 | # $(Q)$(MAKE) $(clean)=dir | |
1480 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj | |
1481 | ||
1da177e4 LT |
1482 | endif # skip-makefile |
1483 | ||
4f193362 | 1484 | PHONY += FORCE |
1da177e4 | 1485 | FORCE: |
4f193362 PS |
1486 | |
1487 | ||
1488 | # Declare the contents of the .PHONY variable as phony. We keep that | |
1489 | # information in a variable se we can use it in if_changed and friends. | |
1490 | .PHONY: $(PHONY) |