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1da177e4 LT |
1 | VERSION = 2 |
2 | PATCHLEVEL = 6 | |
55639353 | 3 | SUBLEVEL = 33 |
74d2e4f8 | 4 | EXTRAVERSION = -rc3 |
59a3759d | 5 | NAME = Man-Eating Seals of Antiquity |
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 | |
d384e35a | 15 | # (this increases performance and avoids hard-to-debug behaviour); |
15964864 OV |
16 | # o print "Entering directory ..."; |
17 | MAKEFLAGS += -rR --no-print-directory | |
1da177e4 | 18 | |
c051346b | 19 | # Avoid funny character set dependencies |
06b5dc64 | 20 | unexport LC_ALL |
c051346b PA |
21 | LC_CTYPE=C |
22 | LC_COLLATE=C | |
23 | LC_NUMERIC=C | |
06b5dc64 | 24 | export LC_CTYPE LC_COLLATE LC_NUMERIC |
c051346b | 25 | |
1da177e4 LT |
26 | # We are using a recursive build, so we need to do a little thinking |
27 | # to get the ordering right. | |
28 | # | |
29 | # Most importantly: sub-Makefiles should only ever modify files in | |
30 | # their own directory. If in some directory we have a dependency on | |
31 | # a file in another dir (which doesn't happen often, but it's often | |
32 | # unavoidable when linking the built-in.o targets which finally | |
33 | # turn into vmlinux), we will call a sub make in that other dir, and | |
34 | # after that we are sure that everything which is in that other dir | |
35 | # is now up to date. | |
36 | # | |
37 | # The only cases where we need to modify files which have global | |
38 | # effects are thus separated out and done before the recursive | |
39 | # descending is started. They are now explicitly listed as the | |
40 | # prepare rule. | |
41 | ||
42 | # To put more focus on warnings, be less verbose as default | |
43 | # Use 'make V=1' to see the full commands | |
44 | ||
b8b0618c CR |
45 | ifeq ("$(origin V)", "command line") |
46 | KBUILD_VERBOSE = $(V) | |
1da177e4 LT |
47 | endif |
48 | ifndef KBUILD_VERBOSE | |
49 | KBUILD_VERBOSE = 0 | |
50 | endif | |
51 | ||
1c7bafe7 RD |
52 | # Call a source code checker (by default, "sparse") as part of the |
53 | # C compilation. | |
54 | # | |
55 | # Use 'make C=1' to enable checking of only re-compiled files. | |
56 | # Use 'make C=2' to enable checking of *all* source files, regardless | |
57 | # of whether they are re-compiled or not. | |
58 | # | |
59 | # See the file "Documentation/sparse.txt" for more details, including | |
60 | # where to get the "sparse" utility. | |
1da177e4 | 61 | |
b8b0618c CR |
62 | ifeq ("$(origin C)", "command line") |
63 | KBUILD_CHECKSRC = $(C) | |
1da177e4 LT |
64 | endif |
65 | ifndef KBUILD_CHECKSRC | |
66 | KBUILD_CHECKSRC = 0 | |
67 | endif | |
68 | ||
69 | # Use make M=dir to specify directory of external module to build | |
70 | # Old syntax make ... SUBDIRS=$PWD is still supported | |
71 | # Setting the environment variable KBUILD_EXTMOD take precedence | |
72 | ifdef SUBDIRS | |
73 | KBUILD_EXTMOD ?= $(SUBDIRS) | |
74 | endif | |
1da177e4 | 75 | |
b8b0618c CR |
76 | ifeq ("$(origin M)", "command line") |
77 | KBUILD_EXTMOD := $(M) | |
78 | endif | |
1da177e4 LT |
79 | |
80 | # kbuild supports saving output files in a separate directory. | |
81 | # To locate output files in a separate directory two syntaxes are supported. | |
82 | # In both cases the working directory must be the root of the kernel src. | |
83 | # 1) O= | |
84 | # Use "make O=dir/to/store/output/files/" | |
070b98bf | 85 | # |
1da177e4 LT |
86 | # 2) Set KBUILD_OUTPUT |
87 | # Set the environment variable KBUILD_OUTPUT to point to the directory | |
88 | # where the output files shall be placed. | |
89 | # export KBUILD_OUTPUT=dir/to/store/output/files/ | |
90 | # make | |
91 | # | |
92 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment | |
93 | # variable. | |
94 | ||
95 | ||
96 | # KBUILD_SRC is set on invocation of make in OBJ directory | |
97 | # KBUILD_SRC is not intended to be used by the regular user (for now) | |
98 | ifeq ($(KBUILD_SRC),) | |
99 | ||
100 | # OK, Make called in directory where kernel src resides | |
101 | # Do we want to locate output files in a separate directory? | |
b8b0618c CR |
102 | ifeq ("$(origin O)", "command line") |
103 | KBUILD_OUTPUT := $(O) | |
1da177e4 LT |
104 | endif |
105 | ||
106 | # That's our default target when none is given on the command line | |
4f193362 | 107 | PHONY := _all |
1da177e4 LT |
108 | _all: |
109 | ||
1cacc9ab SR |
110 | # Cancel implicit rules on top Makefile |
111 | $(CURDIR)/Makefile Makefile: ; | |
112 | ||
1da177e4 LT |
113 | ifneq ($(KBUILD_OUTPUT),) |
114 | # Invoke a second make in the output directory, passing relevant variables | |
115 | # check that the output directory actually exists | |
116 | saved-output := $(KBUILD_OUTPUT) | |
117 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) | |
118 | $(if $(KBUILD_OUTPUT),, \ | |
119 | $(error output directory "$(saved-output)" does not exist)) | |
1da177e4 | 120 | |
0b35786d MM |
121 | PHONY += $(MAKECMDGOALS) sub-make |
122 | ||
1cacc9ab | 123 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
0b35786d MM |
124 | $(Q)@: |
125 | ||
126 | sub-make: FORCE | |
23a45e2c SR |
127 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
128 | KBUILD_SRC=$(CURDIR) \ | |
0b35786d MM |
129 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
130 | $(filter-out _all sub-make,$(MAKECMDGOALS)) | |
1da177e4 LT |
131 | |
132 | # Leave processing to above invocation of make | |
133 | skip-makefile := 1 | |
134 | endif # ifneq ($(KBUILD_OUTPUT),) | |
135 | endif # ifeq ($(KBUILD_SRC),) | |
136 | ||
137 | # We process the rest of the Makefile if this is the final invocation of make | |
138 | ifeq ($(skip-makefile),) | |
139 | ||
140 | # If building an external module we do not care about the all: rule | |
141 | # but instead _all depend on modules | |
4f193362 | 142 | PHONY += all |
1da177e4 LT |
143 | ifeq ($(KBUILD_EXTMOD),) |
144 | _all: all | |
145 | else | |
146 | _all: modules | |
147 | endif | |
148 | ||
149 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) | |
1da177e4 LT |
150 | objtree := $(CURDIR) |
151 | src := $(srctree) | |
152 | obj := $(objtree) | |
153 | ||
0f558c33 | 154 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
1da177e4 | 155 | |
11294235 | 156 | export srctree objtree VPATH |
1da177e4 | 157 | |
1da177e4 LT |
158 | |
159 | # SUBARCH tells the usermode build what the underlying arch is. That is set | |
160 | # first, and if a usermode build is happening, the "ARCH=um" on the command | |
161 | # line overrides the setting of ARCH below. If a native build is happening, | |
162 | # then ARCH is assigned, getting whatever value it gets normally, and | |
163 | # SUBARCH is subsequently ignored. | |
164 | ||
165 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ | |
166 | -e s/arm.*/arm/ -e s/sa110/arm/ \ | |
39990b5e | 167 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
236b1957 | 168 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
3cc000b5 | 169 | -e s/sh[234].*/sh/ ) |
1da177e4 LT |
170 | |
171 | # Cross compiling and selecting different set of gcc/bin-utils | |
172 | # --------------------------------------------------------------------------- | |
173 | # | |
174 | # When performing cross compilation for other architectures ARCH shall be set | |
175 | # to the target architecture. (See arch/* for the possibilities). | |
176 | # ARCH can be set during invocation of make: | |
177 | # make ARCH=ia64 | |
178 | # Another way is to have ARCH set in the environment. | |
179 | # The default ARCH is the host where make is executed. | |
180 | ||
181 | # CROSS_COMPILE specify the prefix used for all executables used | |
182 | # during compilation. Only gcc and related bin-utils executables | |
183 | # are prefixed with $(CROSS_COMPILE). | |
184 | # CROSS_COMPILE can be set on the command line | |
185 | # make CROSS_COMPILE=ia64-linux- | |
186 | # Alternatively CROSS_COMPILE can be set in the environment. | |
187 | # Default value for CROSS_COMPILE is not to prefix executables | |
188 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile | |
4ce6efed | 189 | export KBUILD_BUILDHOST := $(SUBARCH) |
2331d1a6 SR |
190 | ARCH ?= $(SUBARCH) |
191 | CROSS_COMPILE ?= | |
1da177e4 LT |
192 | |
193 | # Architecture as present in compile.h | |
6752ed90 TG |
194 | UTS_MACHINE := $(ARCH) |
195 | SRCARCH := $(ARCH) | |
1da177e4 | 196 | |
d746d647 SR |
197 | # Additional ARCH settings for x86 |
198 | ifeq ($(ARCH),i386) | |
199 | SRCARCH := x86 | |
200 | endif | |
201 | ifeq ($(ARCH),x86_64) | |
202 | SRCARCH := x86 | |
203 | endif | |
74b469f2 | 204 | |
5e538790 | 205 | # Additional ARCH settings for sparc |
a439fe51 | 206 | ifeq ($(ARCH),sparc64) |
5e538790 | 207 | SRCARCH := sparc |
a439fe51 | 208 | endif |
2fb9b1bd | 209 | |
3cc000b5 PM |
210 | # Additional ARCH settings for sh |
211 | ifeq ($(ARCH),sh64) | |
212 | SRCARCH := sh | |
213 | endif | |
214 | ||
5e538790 SR |
215 | # Where to locate arch specific headers |
216 | hdr-arch := $(SRCARCH) | |
217 | ||
49148020 SR |
218 | ifeq ($(ARCH),m68knommu) |
219 | hdr-arch := m68k | |
220 | endif | |
221 | ||
14cdd3c4 RZ |
222 | KCONFIG_CONFIG ?= .config |
223 | ||
1da177e4 LT |
224 | # SHELL used by kbuild |
225 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
226 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
227 | else echo sh; fi ; fi) | |
228 | ||
070b98bf SR |
229 | HOSTCC = gcc |
230 | HOSTCXX = g++ | |
25583d4b | 231 | HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer |
070b98bf | 232 | HOSTCXXFLAGS = -O2 |
1da177e4 | 233 | |
070b98bf SR |
234 | # Decide whether to build built-in, modular, or both. |
235 | # Normally, just do built-in. | |
1da177e4 LT |
236 | |
237 | KBUILD_MODULES := | |
238 | KBUILD_BUILTIN := 1 | |
239 | ||
240 | # If we have only "make modules", don't compile built-in objects. | |
241 | # When we're building modules with modversions, we need to consider | |
242 | # the built-in objects during the descend as well, in order to | |
070b98bf | 243 | # make sure the checksums are up to date before we record them. |
1da177e4 LT |
244 | |
245 | ifeq ($(MAKECMDGOALS),modules) | |
246 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) | |
247 | endif | |
248 | ||
249 | # If we have "make <whatever> modules", compile modules | |
250 | # in addition to whatever we do anyway. | |
251 | # Just "make" or "make all" shall build modules as well | |
252 | ||
253 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) | |
254 | KBUILD_MODULES := 1 | |
255 | endif | |
256 | ||
257 | ifeq ($(MAKECMDGOALS),) | |
258 | KBUILD_MODULES := 1 | |
259 | endif | |
260 | ||
e579d351 | 261 | export KBUILD_MODULES KBUILD_BUILTIN |
1da177e4 LT |
262 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
263 | ||
264 | # Beautify output | |
265 | # --------------------------------------------------------------------------- | |
266 | # | |
267 | # Normally, we echo the whole command before executing it. By making | |
268 | # that echo $($(quiet)$(cmd)), we now have the possibility to set | |
269 | # $(quiet) to choose other forms of output instead, e.g. | |
270 | # | |
271 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ | |
272 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | |
273 | # | |
274 | # If $(quiet) is empty, the whole command will be printed. | |
275 | # If it is set to "quiet_", only the short version will be printed. | |
070b98bf | 276 | # If it is set to "silent_", nothing will be printed at all, since |
1da177e4 LT |
277 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
278 | # | |
a58a414f | 279 | # A simple variant is to prefix commands with $(Q) - that's useful |
1da177e4 LT |
280 | # for commands that shall be hidden in non-verbose mode. |
281 | # | |
282 | # $(Q)ln $@ :< | |
283 | # | |
284 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. | |
285 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. | |
286 | ||
287 | ifeq ($(KBUILD_VERBOSE),1) | |
288 | quiet = | |
289 | Q = | |
290 | else | |
291 | quiet=quiet_ | |
292 | Q = @ | |
293 | endif | |
294 | ||
295 | # If the user is running make -s (silent mode), suppress echoing of | |
296 | # commands | |
297 | ||
298 | ifneq ($(findstring s,$(MAKEFLAGS)),) | |
299 | quiet=silent_ | |
300 | endif | |
301 | ||
302 | export quiet Q KBUILD_VERBOSE | |
303 | ||
1da177e4 LT |
304 | |
305 | # Look for make include files relative to root of kernel src | |
306 | MAKEFLAGS += --include-dir=$(srctree) | |
307 | ||
1cacc9ab SR |
308 | # We need some generic definitions (do not try to remake the file). |
309 | $(srctree)/scripts/Kbuild.include: ; | |
15964864 | 310 | include $(srctree)/scripts/Kbuild.include |
1da177e4 LT |
311 | |
312 | # Make variables (CC, etc...) | |
313 | ||
314 | AS = $(CROSS_COMPILE)as | |
315 | LD = $(CROSS_COMPILE)ld | |
316 | CC = $(CROSS_COMPILE)gcc | |
317 | CPP = $(CC) -E | |
318 | AR = $(CROSS_COMPILE)ar | |
319 | NM = $(CROSS_COMPILE)nm | |
320 | STRIP = $(CROSS_COMPILE)strip | |
321 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
322 | OBJDUMP = $(CROSS_COMPILE)objdump | |
323 | AWK = awk | |
324 | GENKSYMS = scripts/genksyms/genksyms | |
caa27b66 | 325 | INSTALLKERNEL := installkernel |
1da177e4 LT |
326 | DEPMOD = /sbin/depmod |
327 | KALLSYMS = scripts/kallsyms | |
328 | PERL = perl | |
329 | CHECK = sparse | |
330 | ||
80a7d1d9 HE |
331 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
332 | -Wbitwise -Wno-return-void $(CF) | |
1da177e4 LT |
333 | MODFLAGS = -DMODULE |
334 | CFLAGS_MODULE = $(MODFLAGS) | |
335 | AFLAGS_MODULE = $(MODFLAGS) | |
405d967d | 336 | LDFLAGS_MODULE = -T $(srctree)/scripts/module-common.lds |
1da177e4 LT |
337 | CFLAGS_KERNEL = |
338 | AFLAGS_KERNEL = | |
2521f2c2 | 339 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
1da177e4 LT |
340 | |
341 | ||
342 | # Use LINUXINCLUDE when you must reference the include/ directory. | |
343 | # Needed to be compatible with the O= option | |
24a675e8 | 344 | LINUXINCLUDE := -I$(srctree)/arch/$(hdr-arch)/include -Iinclude \ |
96f13045 | 345 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ |
264a2683 | 346 | -include include/generated/autoconf.h |
1da177e4 | 347 | |
d8672b40 | 348 | KBUILD_CPPFLAGS := -D__KERNEL__ |
1da177e4 | 349 | |
a0f97e06 | 350 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
94bed2a9 | 351 | -fno-strict-aliasing -fno-common \ |
a8735821 | 352 | -Werror-implicit-function-declaration \ |
a3ca86ae ET |
353 | -Wno-format-security \ |
354 | -fno-delete-null-pointer-checks | |
222d394d | 355 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
1da177e4 | 356 | |
f1d28fb0 RZ |
357 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
358 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) | |
2244cbd8 | 359 | KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) |
cb58455c | 360 | |
070b98bf | 361 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
80ef88d6 | 362 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
caa27b66 SR |
363 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
364 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE | |
070b98bf | 365 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
1da177e4 | 366 | |
06c5040c | 367 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
2521f2c2 | 368 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
222d394d | 369 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
1da177e4 LT |
370 | |
371 | # When compiling out-of-tree modules, put MODVERDIR in the module | |
372 | # tree rather than in the kernel tree. The kernel tree might | |
373 | # even be read-only. | |
374 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions | |
375 | ||
1da177e4 LT |
376 | # Files to ignore in find ... statements |
377 | ||
406119f4 TM |
378 | 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 |
379 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git | |
1da177e4 LT |
380 | |
381 | # =========================================================================== | |
382 | # Rules shared between *config targets and build targets | |
383 | ||
384 | # Basic helpers built in scripts/ | |
4f193362 | 385 | PHONY += scripts_basic |
1da177e4 LT |
386 | scripts_basic: |
387 | $(Q)$(MAKE) $(build)=scripts/basic | |
638adb05 | 388 | $(Q)rm -f .tmp_quiet_recordmcount |
1da177e4 | 389 | |
cd05e6bd JB |
390 | # To avoid any implicit rule to kick in, define an empty command. |
391 | scripts/basic/%: scripts_basic ; | |
392 | ||
4f193362 | 393 | PHONY += outputmakefile |
fd5f0cd6 JB |
394 | # outputmakefile generates a Makefile in the output directory, if using a |
395 | # separate output directory. This allows convenient use of make in the | |
396 | # output directory. | |
1da177e4 | 397 | outputmakefile: |
fd5f0cd6 | 398 | ifneq ($(KBUILD_SRC),) |
92979997 | 399 | $(Q)ln -fsn $(srctree) source |
fd5f0cd6 JB |
400 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
401 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) | |
402 | endif | |
1da177e4 LT |
403 | |
404 | # To make sure we do not include .config for any of the *config targets | |
405 | # catch them early, and hand them over to scripts/kconfig/Makefile | |
406 | # It is allowed to specify more targets when calling make, including | |
407 | # mixing *config targets and build targets. | |
070b98bf | 408 | # For example 'make oldconfig all'. |
1da177e4 LT |
409 | # Detect when mixed targets is specified, and make a second invocation |
410 | # of make so .config is not included in this case either (for *config). | |
411 | ||
3eb3c740 | 412 | no-dot-config-targets := clean mrproper distclean \ |
c30a02e0 | 413 | cscope TAGS tags help %docs check% \ |
3eb3c740 RZ |
414 | include/linux/version.h headers_% \ |
415 | kernelrelease kernelversion | |
1da177e4 LT |
416 | |
417 | config-targets := 0 | |
418 | mixed-targets := 0 | |
419 | dot-config := 1 | |
420 | ||
421 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
422 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
423 | dot-config := 0 | |
424 | endif | |
425 | endif | |
426 | ||
427 | ifeq ($(KBUILD_EXTMOD),) | |
428 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) | |
429 | config-targets := 1 | |
430 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) | |
431 | mixed-targets := 1 | |
432 | endif | |
433 | endif | |
434 | endif | |
435 | ||
436 | ifeq ($(mixed-targets),1) | |
437 | # =========================================================================== | |
438 | # We're called with mixed targets (*config and build targets). | |
439 | # Handle them one by one. | |
440 | ||
441 | %:: FORCE | |
442 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ | |
443 | ||
444 | else | |
445 | ifeq ($(config-targets),1) | |
446 | # =========================================================================== | |
447 | # *config targets only - make sure prerequisites are updated, and descend | |
448 | # in scripts/kconfig to make the *config target | |
449 | ||
450 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. | |
451 | # KBUILD_DEFCONFIG may point out an alternative default configuration | |
452 | # used for 'make defconfig' | |
74b469f2 | 453 | include $(srctree)/arch/$(SRCARCH)/Makefile |
61bee204 | 454 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
1da177e4 | 455 | |
31110ebb SR |
456 | config: scripts_basic outputmakefile FORCE |
457 | $(Q)mkdir -p include/linux include/config | |
458 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ | |
459 | ||
460 | %config: scripts_basic outputmakefile FORCE | |
c955ccaf | 461 | $(Q)mkdir -p include/linux include/config |
1da177e4 LT |
462 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
463 | ||
464 | else | |
465 | # =========================================================================== | |
466 | # Build targets only - this includes vmlinux, arch specific targets, clean | |
467 | # targets and others. In general all targets except *config targets. | |
468 | ||
469 | ifeq ($(KBUILD_EXTMOD),) | |
470 | # Additional helpers built in scripts/ | |
471 | # Carefully list dependencies so we do not try to build scripts twice | |
070b98bf | 472 | # in parallel |
4f193362 | 473 | PHONY += scripts |
bc081dd6 | 474 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf |
1da177e4 LT |
475 | $(Q)$(MAKE) $(build)=$(@) |
476 | ||
1da177e4 LT |
477 | # Objects we will link into vmlinux / subdirs we need to visit |
478 | init-y := init/ | |
4d2acfbf | 479 | drivers-y := drivers/ sound/ firmware/ |
1da177e4 LT |
480 | net-y := net/ |
481 | libs-y := lib/ | |
482 | core-y := usr/ | |
483 | endif # KBUILD_EXTMOD | |
484 | ||
485 | ifeq ($(dot-config),1) | |
9ee4e336 SR |
486 | # Read in config |
487 | -include include/config/auto.conf | |
1da177e4 | 488 | |
9ee4e336 | 489 | ifeq ($(KBUILD_EXTMOD),) |
1da177e4 LT |
490 | # Read in dependencies to all Kconfig* files, make sure to run |
491 | # oldconfig if changes are detected. | |
c955ccaf | 492 | -include include/config/auto.conf.cmd |
1da177e4 | 493 | |
1da177e4 | 494 | # To avoid any implicit rule to kick in, define an empty command |
14cdd3c4 | 495 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
1da177e4 | 496 | |
c955ccaf | 497 | # If .config is newer than include/config/auto.conf, someone tinkered |
752625cf | 498 | # with it and forgot to run make oldconfig. |
070b98bf | 499 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
752625cf | 500 | # we execute the config step to be sure to catch updated Kconfig files |
bc081dd6 | 501 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
1da177e4 | 502 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
3041e47e | 503 | else |
264a2683 | 504 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
9ee4e336 SR |
505 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
506 | PHONY += include/config/auto.conf | |
507 | ||
508 | include/config/auto.conf: | |
264a2683 | 509 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
9ee4e336 SR |
510 | echo; \ |
511 | echo " ERROR: Kernel configuration is invalid."; \ | |
264a2683 | 512 | echo " include/generated/autoconf.h or $@ are missing.";\ |
9ee4e336 SR |
513 | echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ |
514 | echo; \ | |
515 | /bin/false) | |
516 | ||
517 | endif # KBUILD_EXTMOD | |
c955ccaf | 518 | |
1da177e4 LT |
519 | else |
520 | # Dummy target needed, because used as prerequisite | |
c955ccaf | 521 | include/config/auto.conf: ; |
9ee4e336 | 522 | endif # $(dot-config) |
1da177e4 LT |
523 | |
524 | # The all: target is the default when no target is given on the | |
525 | # command line. | |
526 | # This allow a user to issue only 'make' to build a kernel including modules | |
070b98bf | 527 | # Defaults vmlinux but it is usually overridden in the arch makefile |
1da177e4 LT |
528 | all: vmlinux |
529 | ||
530 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE | |
a0f97e06 | 531 | KBUILD_CFLAGS += -Os |
1da177e4 | 532 | else |
a0f97e06 | 533 | KBUILD_CFLAGS += -O2 |
1da177e4 LT |
534 | endif |
535 | ||
bef5b54b RB |
536 | include $(srctree)/arch/$(SRCARCH)/Makefile |
537 | ||
08f67461 | 538 | ifneq ($(CONFIG_FRAME_WARN),0) |
35bb5b1e AK |
539 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
540 | endif | |
541 | ||
e06b8b98 | 542 | # Force gcc to behave correct even for buggy distributions |
5d707e9c | 543 | ifndef CONFIG_CC_STACKPROTECTOR |
e06b8b98 | 544 | KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
5d707e9c | 545 | endif |
e06b8b98 | 546 | |
1da177e4 | 547 | ifdef CONFIG_FRAME_POINTER |
a0f97e06 | 548 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
1da177e4 | 549 | else |
a0f97e06 | 550 | KBUILD_CFLAGS += -fomit-frame-pointer |
1da177e4 LT |
551 | endif |
552 | ||
553 | ifdef CONFIG_DEBUG_INFO | |
a0f97e06 | 554 | KBUILD_CFLAGS += -g |
222d394d | 555 | KBUILD_AFLAGS += -gdwarf-2 |
1da177e4 LT |
556 | endif |
557 | ||
606576ce | 558 | ifdef CONFIG_FUNCTION_TRACER |
16444a8a ACM |
559 | KBUILD_CFLAGS += -pg |
560 | endif | |
561 | ||
91341d4b SR |
562 | # We trigger additional mismatches with less inlining |
563 | ifdef CONFIG_DEBUG_SECTION_MISMATCH | |
564 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) | |
565 | endif | |
566 | ||
e8e69931 | 567 | # arch Makefile may override CC so keep this after arch Makefile is included |
e8f5bdb0 | 568 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
e8e69931 SR |
569 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
570 | ||
1da177e4 | 571 | # warn about C99 declaration after statement |
a0f97e06 | 572 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
1da177e4 | 573 | |
070b98bf | 574 | # disable pointer signed / unsigned warnings in gcc 4.0 |
a0f97e06 | 575 | KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) |
1da177e4 | 576 | |
fe8d0a41 | 577 | # disable invalid "can't wrap" optimizations for signed / pointers |
a137802e | 578 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
d0115552 | 579 | |
00308649 KM |
580 | # revert to pre-gcc-4.4 behaviour of .eh_frame |
581 | KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) | |
582 | ||
8f7f5c9f AK |
583 | # conserve stack if available |
584 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) | |
585 | ||
06c5040c | 586 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
69ee0b35 SR |
587 | # But warn user when we do so |
588 | warn-assign = \ | |
589 | $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") | |
590 | ||
591 | ifneq ($(KCPPFLAGS),) | |
592 | $(call warn-assign,CPPFLAGS) | |
593 | KBUILD_CPPFLAGS += $(KCPPFLAGS) | |
594 | endif | |
595 | ifneq ($(KAFLAGS),) | |
596 | $(call warn-assign,AFLAGS) | |
597 | KBUILD_AFLAGS += $(KAFLAGS) | |
598 | endif | |
599 | ifneq ($(KCFLAGS),) | |
600 | $(call warn-assign,CFLAGS) | |
601 | KBUILD_CFLAGS += $(KCFLAGS) | |
602 | endif | |
52bcc330 | 603 | |
18991197 RM |
604 | # Use --build-id when available. |
605 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ | |
f86fd306 | 606 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
18991197 RM |
607 | LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
608 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) | |
609 | ||
5d7d18f5 | 610 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
d79a2719 | 611 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
5d7d18f5 DH |
612 | endif |
613 | ||
1da177e4 | 614 | # Default kernel image to build when no specific target is given. |
070b98bf | 615 | # KBUILD_IMAGE may be overruled on the command line or |
1da177e4 LT |
616 | # set in the environment |
617 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over | |
618 | # this default value | |
619 | export KBUILD_IMAGE ?= vmlinux | |
620 | ||
621 | # | |
622 | # INSTALL_PATH specifies where to place the updated kernel and system map | |
623 | # images. Default is /boot, but you can set it to other values | |
624 | export INSTALL_PATH ?= /boot | |
625 | ||
626 | # | |
627 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory | |
628 | # relocations required by build roots. This is not defined in the | |
070b98bf | 629 | # makefile but the argument can be passed to make if needed. |
1da177e4 LT |
630 | # |
631 | ||
df9df036 | 632 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4 LT |
633 | export MODLIB |
634 | ||
ac031f26 | 635 | # |
2ea03891 SR |
636 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
637 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then | |
638 | # the default option --strip-debug will be used. Otherwise, | |
639 | # INSTALL_MOD_STRIP will used as the options to the strip command. | |
640 | ||
ac031f26 TT |
641 | ifdef INSTALL_MOD_STRIP |
642 | ifeq ($(INSTALL_MOD_STRIP),1) | |
2ea03891 | 643 | mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26 | 644 | else |
2ea03891 | 645 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
ac031f26 TT |
646 | endif # INSTALL_MOD_STRIP=1 |
647 | else | |
2ea03891 | 648 | mod_strip_cmd = true |
ac031f26 TT |
649 | endif # INSTALL_MOD_STRIP |
650 | export mod_strip_cmd | |
651 | ||
1da177e4 LT |
652 | |
653 | ifeq ($(KBUILD_EXTMOD),) | |
3a65dfe8 | 654 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4 LT |
655 | |
656 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ | |
657 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ | |
658 | $(net-y) $(net-m) $(libs-y) $(libs-m))) | |
659 | ||
660 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ | |
661 | $(init-n) $(init-) \ | |
662 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ | |
663 | $(net-n) $(net-) $(libs-n) $(libs-)))) | |
664 | ||
665 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) | |
666 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) | |
667 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) | |
668 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) | |
669 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) | |
670 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) | |
671 | libs-y := $(libs-y1) $(libs-y2) | |
672 | ||
673 | # Build vmlinux | |
674 | # --------------------------------------------------------------------------- | |
070b98bf | 675 | # vmlinux is built from the objects selected by $(vmlinux-init) and |
1da177e4 | 676 | # $(vmlinux-main). Most are built-in.o files from top-level directories |
2462566f | 677 | # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. |
1da177e4 LT |
678 | # Ordering when linking is important, and $(vmlinux-init) must be first. |
679 | # | |
680 | # vmlinux | |
681 | # ^ | |
682 | # | | |
683 | # +-< $(vmlinux-init) | |
684 | # | +--< init/version.o + more | |
685 | # | | |
686 | # +--< $(vmlinux-main) | |
687 | # | +--< driver/built-in.o mm/built-in.o + more | |
688 | # | | |
689 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) | |
690 | # | |
691 | # vmlinux version (uname -v) cannot be updated during normal | |
692 | # descending-into-subdirs phase since we do not yet know if we need to | |
693 | # update vmlinux. | |
694 | # Therefore this step is delayed until just before final link of vmlinux - | |
695 | # except in the kallsyms case where it is done just before adding the | |
696 | # symbols to the kernel. | |
697 | # | |
698 | # System.map is generated to document addresses of all kernel symbols | |
699 | ||
700 | vmlinux-init := $(head-y) $(init-y) | |
701 | vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) | |
702 | vmlinux-all := $(vmlinux-init) $(vmlinux-main) | |
6752ed90 | 703 | vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds |
85bd2fdd | 704 | export KBUILD_VMLINUX_OBJS := $(vmlinux-all) |
1da177e4 LT |
705 | |
706 | # Rule to link vmlinux - also used during CONFIG_KALLSYMS | |
707 | # May be overridden by arch/$(ARCH)/Makefile | |
708 | quiet_cmd_vmlinux__ ?= LD $@ | |
709 | cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ | |
710 | -T $(vmlinux-lds) $(vmlinux-init) \ | |
711 | --start-group $(vmlinux-main) --end-group \ | |
741f98fe | 712 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) |
1da177e4 LT |
713 | |
714 | # Generate new vmlinux version | |
715 | quiet_cmd_vmlinux_version = GEN .version | |
716 | cmd_vmlinux_version = set -e; \ | |
4e25d8bb JB |
717 | if [ ! -r .version ]; then \ |
718 | rm -f .version; \ | |
719 | echo 1 >.version; \ | |
720 | else \ | |
721 | mv .version .old_version; \ | |
722 | expr 0$$(cat .old_version) + 1 >.version; \ | |
723 | fi; \ | |
1da177e4 LT |
724 | $(MAKE) $(build)=init |
725 | ||
726 | # Generate System.map | |
070b98bf | 727 | quiet_cmd_sysmap = SYSMAP |
1da177e4 LT |
728 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap |
729 | ||
730 | # Link of vmlinux | |
731 | # If CONFIG_KALLSYMS is set .version is already updated | |
732 | # Generate System.map and verify that the content is consistent | |
39ca371c MR |
733 | # Use + in front of the vmlinux_version rule to silent warning with make -j2 |
734 | # First command is ':' to allow us to use + in front of the rule | |
1da177e4 | 735 | define rule_vmlinux__ |
39ca371c | 736 | : |
1da177e4 LT |
737 | $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) |
738 | ||
739 | $(call cmd,vmlinux__) | |
740 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
741 | ||
4635281c SR |
742 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
743 | echo ' $($(quiet)cmd_sysmap) System.map' &&) \ | |
744 | $(cmd_sysmap) $@ System.map; \ | |
745 | if [ $$? -ne 0 ]; then \ | |
746 | rm -f $@; \ | |
747 | /bin/false; \ | |
1da177e4 LT |
748 | fi; |
749 | $(verify_kallsyms) | |
750 | endef | |
751 | ||
752 | ||
753 | ifdef CONFIG_KALLSYMS | |
754 | # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) | |
755 | # It's a three stage process: | |
756 | # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is | |
757 | # empty | |
758 | # Running kallsyms on that gives us .tmp_kallsyms1.o with | |
759 | # the right size - vmlinux version (uname -v) is updated during this step | |
760 | # o .tmp_vmlinux2 now has a __kallsyms section of the right size, | |
761 | # but due to the added section, some addresses have shifted. | |
762 | # From here, we generate a correct .tmp_kallsyms2.o | |
763 | # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. | |
764 | # o Verify that the System.map from vmlinux matches the map from | |
765 | # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. | |
766 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using | |
767 | # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a | |
768 | # temporary bypass to allow the kernel to be built while the | |
769 | # maintainers work out what went wrong with kallsyms. | |
770 | ||
771 | ifdef CONFIG_KALLSYMS_EXTRA_PASS | |
772 | last_kallsyms := 3 | |
773 | else | |
774 | last_kallsyms := 2 | |
775 | endif | |
776 | ||
777 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o | |
778 | ||
779 | define verify_kallsyms | |
4635281c SR |
780 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
781 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ | |
1da177e4 | 782 | $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map |
4635281c SR |
783 | $(Q)cmp -s System.map .tmp_System.map || \ |
784 | (echo Inconsistent kallsyms data; \ | |
785 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ | |
1da177e4 LT |
786 | rm .tmp_kallsyms* ; /bin/false ) |
787 | endef | |
788 | ||
789 | # Update vmlinux version before link | |
790 | # Use + in front of this rule to silent warning about make -j1 | |
72ba47c1 | 791 | # First command is ':' to allow us to use + in front of this rule |
1da177e4 LT |
792 | cmd_ksym_ld = $(cmd_vmlinux__) |
793 | define rule_ksym_ld | |
72ba47c1 | 794 | : |
1da177e4 LT |
795 | +$(call cmd,vmlinux_version) |
796 | $(call cmd,vmlinux__) | |
797 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
798 | endef | |
799 | ||
800 | # Generate .S file with all kernel symbols | |
801 | quiet_cmd_kallsyms = KSYM $@ | |
2ea03891 SR |
802 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ |
803 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ | |
9bb48247 | 804 | |
2ea03891 | 805 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE |
1da177e4 LT |
806 | $(call if_changed_dep,as_o_S) |
807 | ||
2ea03891 | 808 | .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) |
1da177e4 LT |
809 | $(call cmd,kallsyms) |
810 | ||
811 | # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version | |
2ea03891 SR |
812 | .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE |
813 | $(call if_changed_rule,ksym_ld) | |
1da177e4 | 814 | |
2ea03891 SR |
815 | .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE |
816 | $(call if_changed,vmlinux__) | |
1da177e4 | 817 | |
2ea03891 SR |
818 | .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE |
819 | $(call if_changed,vmlinux__) | |
1da177e4 LT |
820 | |
821 | # Needs to visit scripts/ before $(KALLSYMS) can be used. | |
822 | $(KALLSYMS): scripts ; | |
823 | ||
33bc25ea SR |
824 | # Generate some data for debugging strange kallsyms problems |
825 | debug_kallsyms: .tmp_map$(last_kallsyms) | |
826 | ||
827 | .tmp_map%: .tmp_vmlinux% FORCE | |
828 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ | |
829 | ||
830 | .tmp_map3: .tmp_map2 | |
831 | ||
832 | .tmp_map2: .tmp_map1 | |
833 | ||
1da177e4 LT |
834 | endif # ifdef CONFIG_KALLSYMS |
835 | ||
741f98fe SR |
836 | # Do modpost on a prelinked vmlinux. The finally linked vmlinux has |
837 | # relevant sections renamed as per the linker script. | |
838 | quiet_cmd_vmlinux-modpost = LD $@ | |
839 | cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ | |
840 | $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ | |
90ebd878 | 841 | $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) |
741f98fe SR |
842 | define rule_vmlinux-modpost |
843 | : | |
844 | +$(call cmd,vmlinux-modpost) | |
845 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ | |
846 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd | |
847 | endef | |
848 | ||
1da177e4 | 849 | # vmlinux image - including updated kernel symbols |
310f8243 | 850 | vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE |
0f836e5f | 851 | ifdef CONFIG_HEADERS_CHECK |
0e7af8d0 | 852 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
267c4025 MD |
853 | endif |
854 | ifdef CONFIG_SAMPLES | |
855 | $(Q)$(MAKE) $(build)=samples | |
3794f3e8 RD |
856 | endif |
857 | ifdef CONFIG_BUILD_DOCSRC | |
858 | $(Q)$(MAKE) $(build)=Documentation | |
0f836e5f | 859 | endif |
741f98fe | 860 | $(call vmlinux-modpost) |
1da177e4 | 861 | $(call if_changed_rule,vmlinux__) |
4e25d8bb | 862 | $(Q)rm -f .old_version |
1da177e4 | 863 | |
310f8243 | 864 | # build vmlinux.o first to catch section mismatch errors early |
cf87dcd1 SR |
865 | ifdef CONFIG_KALLSYMS |
866 | .tmp_vmlinux1: vmlinux.o | |
867 | endif | |
90ebd878 SR |
868 | |
869 | modpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) | |
870 | vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE | |
741f98fe SR |
871 | $(call if_changed_rule,vmlinux-modpost) |
872 | ||
1da177e4 LT |
873 | # The actual objects are generated when descending, |
874 | # make sure no implicit rule kicks in | |
875 | $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; | |
876 | ||
877 | # Handle descending into subdirectories listed in $(vmlinux-dirs) | |
878 | # Preset locale variables to speed up the build process. Limit locale | |
879 | # tweaks to this spot to avoid wrong language settings when running | |
880 | # make menuconfig etc. | |
881 | # Error messages still appears in the original language | |
882 | ||
4f193362 | 883 | PHONY += $(vmlinux-dirs) |
5bb78269 | 884 | $(vmlinux-dirs): prepare scripts |
1da177e4 | 885 | $(Q)$(MAKE) $(build)=$@ |
bc081dd6 MM |
886 | ifdef CONFIG_MODULES |
887 | $(Q)$(MAKE) $(modbuiltin)=$@ | |
888 | endif | |
1da177e4 | 889 | |
cb58455c | 890 | # Build the kernel release string |
cb58455c | 891 | # |
1ef98856 RD |
892 | # The KERNELRELEASE value built here is stored in the file |
893 | # include/config/kernel.release, and is used when executing several | |
894 | # make targets, such as "make install" or "make modules_install." | |
895 | # | |
896 | # The eventual kernel release string consists of the following fields, | |
897 | # shown in a hierarchical format to show how smaller parts are concatenated | |
898 | # to form the larger and final value, with values coming from places like | |
899 | # the Makefile, kernel config options, make command line options and/or | |
900 | # SCM tag information. | |
901 | # | |
902 | # $(KERNELVERSION) | |
903 | # $(VERSION) eg, 2 | |
904 | # $(PATCHLEVEL) eg, 6 | |
905 | # $(SUBLEVEL) eg, 18 | |
906 | # $(EXTRAVERSION) eg, -rc6 | |
907 | # $(localver-full) | |
908 | # $(localver) | |
76c32956 | 909 | # localversion* (files without backups, containing '~') |
1ef98856 RD |
910 | # $(CONFIG_LOCALVERSION) (from kernel config setting) |
911 | # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set) | |
912 | # ./scripts/setlocalversion (SCM tag, if one exists) | |
913 | # $(LOCALVERSION) (from make command line if provided) | |
914 | # | |
915 | # Note how the final $(localver-auto) string is included *only* if the | |
916 | # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the | |
917 | # moment, only git is supported but other SCMs can edit the script | |
918 | # scripts/setlocalversion and add the appropriate checks as needed. | |
cb58455c | 919 | |
76c32956 OV |
920 | pattern = ".*/localversion[^~]*" |
921 | string = $(shell cat /dev/null \ | |
fd19e44f | 922 | `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`) |
cb58455c | 923 | |
76c32956 OV |
924 | localver = $(subst $(space),, $(string) \ |
925 | $(patsubst "%",%,$(CONFIG_LOCALVERSION))) | |
070b98bf | 926 | |
cb58455c SR |
927 | # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called |
928 | # and if the SCM is know a tag from the SCM is appended. | |
070b98bf | 929 | # The appended tag is determined by the SCM used. |
cb58455c | 930 | # |
b925dbfe JH |
931 | # .scmversion is used when generating rpm packages so we do not loose |
932 | # the version information from the SCM when we do the build of the kernel | |
933 | # from the copied source | |
cb58455c | 934 | ifdef CONFIG_LOCALVERSION_AUTO |
b925dbfe JH |
935 | |
936 | ifeq ($(wildcard .scmversion),) | |
937 | _localver-auto = $(shell $(CONFIG_SHELL) \ | |
938 | $(srctree)/scripts/setlocalversion $(srctree)) | |
939 | else | |
940 | _localver-auto = $(shell cat .scmversion 2> /dev/null) | |
941 | endif | |
942 | ||
cb58455c SR |
943 | localver-auto = $(LOCALVERSION)$(_localver-auto) |
944 | endif | |
945 | ||
946 | localver-full = $(localver)$(localver-auto) | |
947 | ||
f1d28fb0 | 948 | # Store (new) KERNELRELASE string in include/config/kernel.release |
2244cbd8 | 949 | kernelrelease = $(KERNELVERSION)$(localver-full) |
f1d28fb0 | 950 | include/config/kernel.release: include/config/auto.conf FORCE |
2244cbd8 SR |
951 | $(Q)rm -f $@ |
952 | $(Q)echo $(kernelrelease) > $@ | |
cb58455c SR |
953 | |
954 | ||
1da177e4 | 955 | # Things we need to do before we recursively start building the kernel |
5bb78269 SR |
956 | # or the modules are listed in "prepare". |
957 | # A multi level approach is used. prepareN is processed before prepareN-1. | |
958 | # archprepare is used in arch Makefiles and when processed asm symlink, | |
959 | # version.h and scripts_basic is processed / created. | |
1da177e4 | 960 | |
5bb78269 | 961 | # Listed in dependency order |
4f193362 | 962 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb78269 | 963 | |
86feeaa8 | 964 | # prepare3 is used to check if we are building in a separate output directory, |
1da177e4 LT |
965 | # and if so do: |
966 | # 1) Check that make has not been executed in the kernel src $(srctree) | |
f1d28fb0 | 967 | prepare3: include/config/kernel.release |
1da177e4 | 968 | ifneq ($(KBUILD_SRC),) |
fd54f502 | 969 | @$(kecho) ' Using $(srctree) as source for kernel' |
c955ccaf | 970 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
1da177e4 LT |
971 | echo " $(srctree) is not clean, please run 'make mrproper'";\ |
972 | echo " in the '$(srctree)' directory.";\ | |
973 | /bin/false; \ | |
974 | fi; | |
1da177e4 LT |
975 | endif |
976 | ||
86feeaa8 SR |
977 | # prepare2 creates a makefile if using a separate output directory |
978 | prepare2: prepare3 outputmakefile | |
1da177e4 | 979 | |
273b281f | 980 | prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \ |
f7f16b77 | 981 | include/config/auto.conf |
7bb9d092 | 982 | $(cmd_crmodverdir) |
1da177e4 | 983 | |
5bb78269 SR |
984 | archprepare: prepare1 scripts_basic |
985 | ||
986 | prepare0: archprepare FORCE | |
8d36a623 | 987 | $(Q)$(MAKE) $(build)=. |
c53aeca0 | 988 | $(Q)$(MAKE) $(build)=. missing-syscalls |
86feeaa8 | 989 | |
1da177e4 | 990 | # All the preparing.. |
d395efb5 | 991 | prepare: prepare0 |
1da177e4 | 992 | |
1da177e4 LT |
993 | # Generate some files |
994 | # --------------------------------------------------------------------------- | |
995 | ||
996 | # KERNELRELEASE can change from a few different places, meaning version.h | |
997 | # needs to be updated, so this check is forced on all builds | |
998 | ||
999 | uts_len := 64 | |
63104eec SR |
1000 | define filechk_utsrelease.h |
1001 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ | |
1002 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ | |
1003 | exit 1; \ | |
1004 | fi; \ | |
1005 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) | |
1006 | endef | |
1da177e4 LT |
1007 | |
1008 | define filechk_version.h | |
63104eec SR |
1009 | (echo \#define LINUX_VERSION_CODE $(shell \ |
1010 | expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ | |
1011 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) | |
1da177e4 LT |
1012 | endef |
1013 | ||
63104eec | 1014 | include/linux/version.h: $(srctree)/Makefile FORCE |
1da177e4 LT |
1015 | $(call filechk,version.h) |
1016 | ||
273b281f | 1017 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
63104eec SR |
1018 | $(call filechk,utsrelease.h) |
1019 | ||
179efcb4 VN |
1020 | PHONY += headerdep |
1021 | headerdep: | |
1022 | $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl | |
1023 | ||
1da177e4 LT |
1024 | # --------------------------------------------------------------------------- |
1025 | ||
4f193362 | 1026 | PHONY += depend dep |
1da177e4 LT |
1027 | depend dep: |
1028 | @echo '*** Warning: make $@ is unnecessary now.' | |
1029 | ||
88ecf814 DW |
1030 | # --------------------------------------------------------------------------- |
1031 | # Firmware install | |
1032 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware | |
1033 | export INSTALL_FW_PATH | |
1034 | ||
1035 | PHONY += firmware_install | |
1036 | firmware_install: FORCE | |
1037 | @mkdir -p $(objtree)/firmware | |
1038 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install | |
1039 | ||
8d730cfb DW |
1040 | # --------------------------------------------------------------------------- |
1041 | # Kernel headers | |
8d730cfb | 1042 | |
e6883b18 SR |
1043 | #Default location for installed headers |
1044 | export INSTALL_HDR_PATH = $(objtree)/usr | |
6d716275 | 1045 | |
e6883b18 | 1046 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
2fb9b1bd SR |
1047 | |
1048 | # If we do an all arch process set dst to asm-$(hdr-arch) | |
1049 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) | |
e6883b18 SR |
1050 | |
1051 | PHONY += __headers | |
1052 | __headers: include/linux/version.h scripts_basic FORCE | |
398477d4 | 1053 | $(Q)$(MAKE) $(build)=scripts scripts/unifdef |
e6883b18 SR |
1054 | |
1055 | PHONY += headers_install_all | |
2fb9b1bd SR |
1056 | headers_install_all: |
1057 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install | |
6d716275 | 1058 | |
8d730cfb | 1059 | PHONY += headers_install |
e6883b18 | 1060 | headers_install: __headers |
c95fa08a | 1061 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \ |
2fb9b1bd | 1062 | $(error Headers not exportable for the $(SRCARCH) architecture)) |
88181ec3 | 1063 | $(Q)$(MAKE) $(hdr-inst)=include |
c95fa08a | 1064 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) |
8d730cfb | 1065 | |
1f85712e MF |
1066 | PHONY += headers_check_all |
1067 | headers_check_all: headers_install_all | |
2fb9b1bd | 1068 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
1f85712e | 1069 | |
68475359 DW |
1070 | PHONY += headers_check |
1071 | headers_check: headers_install | |
88181ec3 | 1072 | $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 |
c95fa08a | 1073 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1 |
68475359 | 1074 | |
1da177e4 LT |
1075 | # --------------------------------------------------------------------------- |
1076 | # Modules | |
1077 | ||
1078 | ifdef CONFIG_MODULES | |
1079 | ||
070b98bf | 1080 | # By default, build modules as well |
1da177e4 LT |
1081 | |
1082 | all: modules | |
1083 | ||
1084 | # Build modules | |
551559e1 TH |
1085 | # |
1086 | # A module can be listed more than once in obj-m resulting in | |
1087 | # duplicate lines in modules.order files. Those are removed | |
1088 | # using awk while concatenating to the final file. | |
1da177e4 | 1089 | |
4f193362 | 1090 | PHONY += modules |
1da177e4 | 1091 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) |
551559e1 | 1092 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
bc081dd6 | 1093 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.builtin) > $(objtree)/modules.builtin |
fd54f502 | 1094 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1095 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
44463f7d | 1096 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
1da177e4 LT |
1097 | |
1098 | ||
1099 | # Target to prepare building external modules | |
4f193362 | 1100 | PHONY += modules_prepare |
5bb78269 | 1101 | modules_prepare: prepare scripts |
1da177e4 LT |
1102 | |
1103 | # Target to install modules | |
4f193362 | 1104 | PHONY += modules_install |
1da177e4 LT |
1105 | modules_install: _modinst_ _modinst_post |
1106 | ||
4f193362 | 1107 | PHONY += _modinst_ |
1da177e4 | 1108 | _modinst_: |
ce454d4d | 1109 | @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ |
1da177e4 LT |
1110 | echo "Warning: you may need to install module-init-tools"; \ |
1111 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ | |
1112 | sleep 1; \ | |
1113 | fi | |
1114 | @rm -rf $(MODLIB)/kernel | |
1115 | @rm -f $(MODLIB)/source | |
1116 | @mkdir -p $(MODLIB)/kernel | |
1117 | @ln -s $(srctree) $(MODLIB)/source | |
1118 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ | |
1119 | rm -f $(MODLIB)/build ; \ | |
1120 | ln -s $(objtree) $(MODLIB)/build ; \ | |
1121 | fi | |
551559e1 | 1122 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
bc081dd6 | 1123 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
b805aa0e | 1124 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1125 | |
50a8ec31 | 1126 | # This depmod is only for convenience to give the initial |
1da177e4 LT |
1127 | # boot a modules.dep even before / is mounted read-write. However the |
1128 | # boot script depmod is the master version. | |
4f193362 | 1129 | PHONY += _modinst_post |
1da177e4 | 1130 | _modinst_post: _modinst_ |
88ecf814 | 1131 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
50a8ec31 | 1132 | $(call cmd,depmod) |
1da177e4 LT |
1133 | |
1134 | else # CONFIG_MODULES | |
1135 | ||
1136 | # Modules not configured | |
1137 | # --------------------------------------------------------------------------- | |
1138 | ||
1139 | modules modules_install: FORCE | |
1140 | @echo | |
1141 | @echo "The present kernel configuration has modules disabled." | |
1142 | @echo "Type 'make config' and enable loadable module support." | |
1143 | @echo "Then build a kernel with module support enabled." | |
1144 | @echo | |
1145 | @exit 1 | |
1146 | ||
1147 | endif # CONFIG_MODULES | |
1148 | ||
1da177e4 LT |
1149 | ### |
1150 | # Cleaning is done on three levels. | |
1151 | # make clean Delete most generated files | |
1152 | # Leave enough to build external modules | |
1153 | # make mrproper Delete the current configuration, and all generated files | |
1154 | # make distclean Remove editor backup files, patch leftover files and the like | |
1155 | ||
1156 | # Directories & files removed with 'make clean' | |
1157 | CLEAN_DIRS += $(MODVERDIR) | |
1158 | CLEAN_FILES += vmlinux System.map \ | |
1159 | .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map | |
1160 | ||
1161 | # Directories & files removed with 'make mrproper' | |
96f13045 | 1162 | MRPROPER_DIRS += include/config usr/include include/generated |
f7f16b77 | 1163 | MRPROPER_FILES += .config .config.old .version .old_version \ |
264a2683 | 1164 | include/linux/version.h \ |
8723eaef | 1165 | Module.symvers tags TAGS cscope* |
1da177e4 LT |
1166 | |
1167 | # clean - Delete most, but leave enough to build external modules | |
1168 | # | |
1169 | clean: rm-dirs := $(CLEAN_DIRS) | |
1170 | clean: rm-files := $(CLEAN_FILES) | |
3794f3e8 | 1171 | clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs) Documentation) |
1da177e4 | 1172 | |
4f193362 | 1173 | PHONY += $(clean-dirs) clean archclean |
1da177e4 LT |
1174 | $(clean-dirs): |
1175 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1176 | ||
1177 | clean: archclean $(clean-dirs) | |
1178 | $(call cmd,rmdirs) | |
1179 | $(call cmd,rmfiles) | |
1180 | @find . $(RCS_FIND_IGNORE) \ | |
070b98bf | 1181 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
15fde675 | 1182 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
d35cb360 | 1183 | -o -name '*.symtypes' -o -name 'modules.order' \ |
d9bdcc72 | 1184 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ |
2521f2c2 | 1185 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
1da177e4 LT |
1186 | |
1187 | # mrproper - Delete all generated files, including .config | |
1188 | # | |
1189 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) | |
1190 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) | |
1191 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) | |
1192 | ||
4f193362 | 1193 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4 LT |
1194 | $(mrproper-dirs): |
1195 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) | |
1196 | ||
1197 | mrproper: clean archmrproper $(mrproper-dirs) | |
1198 | $(call cmd,rmdirs) | |
1199 | $(call cmd,rmfiles) | |
1200 | ||
1201 | # distclean | |
1202 | # | |
4f193362 | 1203 | PHONY += distclean |
1da177e4 LT |
1204 | |
1205 | distclean: mrproper | |
1206 | @find $(srctree) $(RCS_FIND_IGNORE) \ | |
070b98bf | 1207 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1da177e4 | 1208 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
070b98bf | 1209 | -o -name '.*.rej' -o -size 0 \ |
1da177e4 LT |
1210 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
1211 | -type f -print | xargs rm -f | |
1212 | ||
1213 | ||
1214 | # Packaging of the kernel to various formats | |
1215 | # --------------------------------------------------------------------------- | |
1216 | # rpm target kept for backward compatibility | |
1217 | package-dir := $(srctree)/scripts/package | |
1218 | ||
031ecc6d | 1219 | %pkg: include/config/kernel.release FORCE |
6c2133e1 | 1220 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6d | 1221 | rpm: include/config/kernel.release FORCE |
6c2133e1 | 1222 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4 LT |
1223 | |
1224 | ||
1225 | # Brief documentation of the typical targets used | |
1226 | # --------------------------------------------------------------------------- | |
1227 | ||
5dffbe81 | 1228 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
1da177e4 | 1229 | boards := $(notdir $(boards)) |
5dffbe81 SB |
1230 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
1231 | board-dirs := $(sort $(notdir $(board-dirs:/=))) | |
1da177e4 LT |
1232 | |
1233 | help: | |
1234 | @echo 'Cleaning targets:' | |
5ea084ef | 1235 | @echo ' clean - Remove most generated files but keep the config and' |
5cc8d246 | 1236 | @echo ' enough build support to build external modules' |
5ea084ef | 1237 | @echo ' mrproper - Remove all generated files + config + various backup files' |
5cc8d246 | 1238 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4 LT |
1239 | @echo '' |
1240 | @echo 'Configuration targets:' | |
1241 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help | |
1242 | @echo '' | |
1243 | @echo 'Other generic targets:' | |
1244 | @echo ' all - Build all targets marked with [*]' | |
1245 | @echo '* vmlinux - Build the bare kernel' | |
1246 | @echo '* modules - Build all modules' | |
9cc5d74c | 1247 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
88ecf814 DW |
1248 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
1249 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' | |
1da177e4 LT |
1250 | @echo ' dir/ - Build all files in dir and below' |
1251 | @echo ' dir/file.[ois] - Build specified target only' | |
155ad605 | 1252 | @echo ' dir/file.ko - Build module including final link' |
c4d5ee67 | 1253 | @echo ' modules_prepare - Set up for building external modules' |
1da177e4 LT |
1254 | @echo ' tags/TAGS - Generate tags file for editors' |
1255 | @echo ' cscope - Generate cscope index' | |
6d128842 | 1256 | @echo ' kernelrelease - Output the release version string' |
cb58455c | 1257 | @echo ' kernelversion - Output the version stored in Makefile' |
2fb9b1bd | 1258 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
59df3230 | 1259 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
2fb9b1bd | 1260 | echo '' |
1da177e4 | 1261 | @echo 'Static analysers' |
1da177e4 LT |
1262 | @echo ' checkstack - Generate a list of stack hogs' |
1263 | @echo ' namespacecheck - Name space analysis on compiled kernel' | |
aa025e7d | 1264 | @echo ' versioncheck - Sanity check on version.h usage' |
ec2d987f | 1265 | @echo ' includecheck - Check for duplicate included header files' |
295ac051 | 1266 | @echo ' export_report - List the usages of all exported symbols' |
179efcb4 VN |
1267 | @echo ' headers_check - Sanity check on exported headers' |
1268 | @echo ' headerdep - Detect inclusion cycles in headers'; \ | |
2fb9b1bd | 1269 | echo '' |
1da177e4 | 1270 | @echo 'Kernel packaging:' |
6c2133e1 | 1271 | @$(MAKE) $(build)=$(package-dir) help |
1da177e4 LT |
1272 | @echo '' |
1273 | @echo 'Documentation targets:' | |
1274 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp | |
1275 | @echo '' | |
01dee188 | 1276 | @echo 'Architecture specific targets ($(SRCARCH)):' |
1da177e4 | 1277 | @$(if $(archhelp),$(archhelp),\ |
01dee188 | 1278 | echo ' No architecture specific help defined for $(SRCARCH)') |
1da177e4 LT |
1279 | @echo '' |
1280 | @$(if $(boards), \ | |
1281 | $(foreach b, $(boards), \ | |
1282 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ | |
1283 | echo '') | |
5dffbe81 SB |
1284 | @$(if $(board-dirs), \ |
1285 | $(foreach b, $(board-dirs), \ | |
1286 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ | |
1287 | printf " %-16s - Show all of the above\\n" help-boards; \ | |
1288 | echo '') | |
1da177e4 LT |
1289 | |
1290 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' | |
45d506bd | 1291 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4 | 1292 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
701842e3 DK |
1293 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
1294 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' | |
1da177e4 LT |
1295 | @echo '' |
1296 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' | |
1297 | @echo 'For further info see the ./README file' | |
1298 | ||
1299 | ||
5dffbe81 SB |
1300 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
1301 | ||
1302 | help-boards: $(help-board-dirs) | |
1303 | ||
1304 | boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) | |
1305 | ||
1306 | $(help-board-dirs): help-%: | |
1307 | @echo 'Architecture specific targets ($(SRCARCH) $*):' | |
1308 | @$(if $(boards-per-dir), \ | |
1309 | $(foreach b, $(boards-per-dir), \ | |
1310 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ | |
1311 | echo '') | |
1312 | ||
1313 | ||
1da177e4 LT |
1314 | # Documentation targets |
1315 | # --------------------------------------------------------------------------- | |
1316 | %docs: scripts_basic FORCE | |
1317 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ | |
1318 | ||
1319 | else # KBUILD_EXTMOD | |
1320 | ||
1321 | ### | |
1322 | # External module support. | |
1323 | # When building external modules the kernel used as basis is considered | |
1324 | # read-only, and no consistency checks are made and the make | |
1325 | # system is not used on the basis kernel. If updates are required | |
1326 | # in the basis kernel ordinary make commands (without M=...) must | |
1327 | # be used. | |
1328 | # | |
1329 | # The following are the only valid targets when building external | |
1330 | # modules. | |
1331 | # make M=dir clean Delete all automatically generated files | |
1332 | # make M=dir modules Make all modules in specified dir | |
1333 | # make M=dir Same as 'make M=dir modules' | |
1334 | # make M=dir modules_install | |
070b98bf | 1335 | # Install the modules built in the module directory |
1da177e4 LT |
1336 | # Assumes install directory is already created |
1337 | ||
1338 | # We are always building modules | |
1339 | KBUILD_MODULES := 1 | |
4f193362 | 1340 | PHONY += crmodverdir |
1da177e4 | 1341 | crmodverdir: |
7bb9d092 | 1342 | $(cmd_crmodverdir) |
1da177e4 | 1343 | |
4f193362 | 1344 | PHONY += $(objtree)/Module.symvers |
1da177e4 LT |
1345 | $(objtree)/Module.symvers: |
1346 | @test -e $(objtree)/Module.symvers || ( \ | |
1347 | echo; \ | |
1348 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ | |
1349 | echo " is missing; modules will have no dependencies and modversions."; \ | |
1350 | echo ) | |
1351 | ||
1352 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) | |
4f193362 | 1353 | PHONY += $(module-dirs) modules |
1da177e4 LT |
1354 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1355 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) | |
1356 | ||
1357 | modules: $(module-dirs) | |
fd54f502 | 1358 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1359 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4 | 1360 | |
4f193362 | 1361 | PHONY += modules_install |
a67dc21a | 1362 | modules_install: _emodinst_ _emodinst_post |
e6304663 | 1363 | |
4f193362 PS |
1364 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1365 | PHONY += _emodinst_ | |
a67dc21a | 1366 | _emodinst_: |
a67dc21a | 1367 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e | 1368 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1369 | |
4f193362 | 1370 | PHONY += _emodinst_post |
a67dc21a SR |
1371 | _emodinst_post: _emodinst_ |
1372 | $(call cmd,depmod) | |
1373 | ||
1da177e4 LT |
1374 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1375 | ||
4f193362 | 1376 | PHONY += $(clean-dirs) clean |
1da177e4 LT |
1377 | $(clean-dirs): |
1378 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1379 | ||
1380 | clean: rm-dirs := $(MODVERDIR) | |
0c56042a | 1381 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers \ |
bc081dd6 MM |
1382 | $(KBUILD_EXTMOD)/modules.order \ |
1383 | $(KBUILD_EXTMOD)/modules.builtin | |
1da177e4 LT |
1384 | clean: $(clean-dirs) |
1385 | $(call cmd,rmdirs) | |
c34114f4 | 1386 | $(call cmd,rmfiles) |
1da177e4 | 1387 | @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ |
070b98bf | 1388 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
2521f2c2 PO |
1389 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
1390 | -o -name '*.gcno' \) -type f -print | xargs rm -f | |
1da177e4 LT |
1391 | |
1392 | help: | |
1393 | @echo ' Building external modules.' | |
1394 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' | |
1395 | @echo '' | |
1396 | @echo ' modules - default target, build the module(s)' | |
1397 | @echo ' modules_install - install the module' | |
1398 | @echo ' clean - remove generated files in module directory only' | |
1399 | @echo '' | |
06300b21 SR |
1400 | |
1401 | # Dummies... | |
4f193362 | 1402 | PHONY += prepare scripts |
06300b21 SR |
1403 | prepare: ; |
1404 | scripts: ; | |
1da177e4 LT |
1405 | endif # KBUILD_EXTMOD |
1406 | ||
1407 | # Generate tags for editors | |
1408 | # --------------------------------------------------------------------------- | |
a680eedc SR |
1409 | quiet_cmd_tags = GEN $@ |
1410 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ | |
1da177e4 | 1411 | |
a680eedc | 1412 | tags TAGS cscope: FORCE |
1da177e4 LT |
1413 | $(call cmd,tags) |
1414 | ||
1da177e4 LT |
1415 | # Scripts to check various things for consistency |
1416 | # --------------------------------------------------------------------------- | |
1417 | ||
1da177e4 LT |
1418 | includecheck: |
1419 | find * $(RCS_FIND_IGNORE) \ | |
1420 | -name '*.[hcS]' -type f -print | sort \ | |
80007434 | 1421 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1da177e4 LT |
1422 | |
1423 | versioncheck: | |
1424 | find * $(RCS_FIND_IGNORE) \ | |
1425 | -name '*.[hcS]' -type f -print | sort \ | |
80007434 | 1426 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1da177e4 | 1427 | |
1da177e4 LT |
1428 | namespacecheck: |
1429 | $(PERL) $(srctree)/scripts/namespace.pl | |
1430 | ||
295ac051 AB |
1431 | export_report: |
1432 | $(PERL) $(srctree)/scripts/export_report.pl | |
1433 | ||
1da177e4 LT |
1434 | endif #ifeq ($(config-targets),1) |
1435 | endif #ifeq ($(mixed-targets),1) | |
1436 | ||
c30a02e0 | 1437 | PHONY += checkstack kernelrelease kernelversion |
e3ccf6e3 | 1438 | |
011e3a9a JD |
1439 | # UML needs a little special treatment here. It wants to use the host |
1440 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone | |
1441 | # else wants $(ARCH), including people doing cross-builds, which means | |
1442 | # that $(SUBARCH) doesn't work here. | |
1443 | ifeq ($(ARCH), um) | |
1444 | CHECKSTACK_ARCH := $(SUBARCH) | |
1445 | else | |
1446 | CHECKSTACK_ARCH := $(ARCH) | |
1447 | endif | |
1da177e4 LT |
1448 | checkstack: |
1449 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ | |
011e3a9a | 1450 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1da177e4 LT |
1451 | |
1452 | kernelrelease: | |
f1d28fb0 RZ |
1453 | $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ |
1454 | $(error kernelrelease not valid - run 'make prepare' to update it)) | |
cb58455c | 1455 | kernelversion: |
2244cbd8 | 1456 | @echo $(KERNELVERSION) |
1da177e4 | 1457 | |
06300b21 SR |
1458 | # Single targets |
1459 | # --------------------------------------------------------------------------- | |
bc2546a6 | 1460 | # Single targets are compatible with: |
e1b8513d | 1461 | # - build with mixed source and output |
bc2546a6 SR |
1462 | # - build with separate output dir 'make O=...' |
1463 | # - external modules | |
1464 | # | |
1465 | # target-dir => where to store outputfile | |
1466 | # build-dir => directory in kernel source tree to use | |
1467 | ||
1468 | ifeq ($(KBUILD_EXTMOD),) | |
aa360879 | 1469 | build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a6 SR |
1470 | target-dir = $(dir $@) |
1471 | else | |
1472 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) | |
1473 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) | |
1474 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) | |
1475 | endif | |
1476 | ||
f6ecebd6 | 1477 | %.s: %.c prepare scripts FORCE |
bc2546a6 | 1478 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1479 | %.i: %.c prepare scripts FORCE |
bc2546a6 | 1480 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1481 | %.o: %.c prepare scripts FORCE |
bc2546a6 | 1482 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1483 | %.lst: %.c prepare scripts FORCE |
bc2546a6 | 1484 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1485 | %.s: %.S prepare scripts FORCE |
bc2546a6 | 1486 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1487 | %.o: %.S prepare scripts FORCE |
bc2546a6 | 1488 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde675 AG |
1489 | %.symtypes: %.c prepare scripts FORCE |
1490 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | |
06300b21 | 1491 | |
bc2546a6 | 1492 | # Modules |
31110ebb SR |
1493 | /: prepare scripts FORCE |
1494 | $(cmd_crmodverdir) | |
1495 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ | |
1496 | $(build)=$(build-dir) | |
1497 | %/: prepare scripts FORCE | |
7bb9d092 | 1498 | $(cmd_crmodverdir) |
06300b21 | 1499 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 SR |
1500 | $(build)=$(build-dir) |
1501 | %.ko: prepare scripts FORCE | |
7bb9d092 | 1502 | $(cmd_crmodverdir) |
06300b21 | 1503 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 | 1504 | $(build)=$(build-dir) $(@:.ko=.o) |
b805aa0e | 1505 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21 | 1506 | |
1da177e4 LT |
1507 | # FIXME Should go into a make.lib or something |
1508 | # =========================================================================== | |
1509 | ||
1510 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) | |
1511 | cmd_rmdirs = rm -rf $(rm-dirs) | |
1512 | ||
1513 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) | |
1514 | cmd_rmfiles = rm -f $(rm-files) | |
1515 | ||
bc3c26fe | 1516 | # Run depmod only if we have System.map and depmod is executable |
50a8ec31 SR |
1517 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
1518 | cmd_depmod = \ | |
d8d2e78a | 1519 | if [ -r System.map -a -x $(DEPMOD) ]; then \ |
50a8ec31 | 1520 | $(DEPMOD) -ae -F System.map \ |
75bccd88 | 1521 | $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) ) \ |
50a8ec31 SR |
1522 | $(KERNELRELEASE); \ |
1523 | fi | |
1524 | ||
7bb9d092 | 1525 | # Create temporary dir for module support files |
ab19f879 SR |
1526 | # clean it up only when building all modules |
1527 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ | |
1528 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) | |
1da177e4 | 1529 | |
222d394d | 1530 | a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ |
d8672b40 | 1531 | $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \ |
5e8d780d | 1532 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) |
1da177e4 LT |
1533 | |
1534 | quiet_cmd_as_o_S = AS $@ | |
1535 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< | |
1536 | ||
1537 | # read all saved command lines | |
1538 | ||
1539 | targets := $(wildcard $(sort $(targets))) | |
1540 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | |
1541 | ||
1542 | ifneq ($(cmd_files),) | |
1543 | $(cmd_files): ; # Do not try to update included dependency files | |
1544 | include $(cmd_files) | |
1545 | endif | |
1546 | ||
1da177e4 LT |
1547 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
1548 | # Usage: | |
1549 | # $(Q)$(MAKE) $(clean)=dir | |
1550 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj | |
1551 | ||
1da177e4 LT |
1552 | endif # skip-makefile |
1553 | ||
4f193362 | 1554 | PHONY += FORCE |
1da177e4 | 1555 | FORCE: |
4f193362 | 1556 | |
4f193362 | 1557 | # Declare the contents of the .PHONY variable as phony. We keep that |
fe8d0a41 | 1558 | # information in a variable so we can use it in if_changed and friends. |
4f193362 | 1559 | .PHONY: $(PHONY) |