Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | VERSION = 2 |
2 | PATCHLEVEL = 6 | |
0ce790e7 | 3 | SUBLEVEL = 39 |
0ee5623f | 4 | EXTRAVERSION = -rc6 |
cd07202c | 5 | NAME = Flesh-Eating Bats with Fangs |
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_COLLATE=C |
22 | LC_NUMERIC=C | |
07105202 | 23 | export LC_COLLATE LC_NUMERIC |
c051346b | 24 | |
1da177e4 LT |
25 | # We are using a recursive build, so we need to do a little thinking |
26 | # to get the ordering right. | |
27 | # | |
28 | # Most importantly: sub-Makefiles should only ever modify files in | |
29 | # their own directory. If in some directory we have a dependency on | |
30 | # a file in another dir (which doesn't happen often, but it's often | |
31 | # unavoidable when linking the built-in.o targets which finally | |
32 | # turn into vmlinux), we will call a sub make in that other dir, and | |
33 | # after that we are sure that everything which is in that other dir | |
34 | # is now up to date. | |
35 | # | |
36 | # The only cases where we need to modify files which have global | |
37 | # effects are thus separated out and done before the recursive | |
38 | # descending is started. They are now explicitly listed as the | |
39 | # prepare rule. | |
40 | ||
41 | # To put more focus on warnings, be less verbose as default | |
42 | # Use 'make V=1' to see the full commands | |
43 | ||
b8b0618c CR |
44 | ifeq ("$(origin V)", "command line") |
45 | KBUILD_VERBOSE = $(V) | |
1da177e4 LT |
46 | endif |
47 | ifndef KBUILD_VERBOSE | |
48 | KBUILD_VERBOSE = 0 | |
49 | endif | |
50 | ||
1c7bafe7 RD |
51 | # Call a source code checker (by default, "sparse") as part of the |
52 | # C compilation. | |
53 | # | |
54 | # Use 'make C=1' to enable checking of only re-compiled files. | |
55 | # Use 'make C=2' to enable checking of *all* source files, regardless | |
56 | # of whether they are re-compiled or not. | |
57 | # | |
58 | # See the file "Documentation/sparse.txt" for more details, including | |
59 | # where to get the "sparse" utility. | |
1da177e4 | 60 | |
b8b0618c CR |
61 | ifeq ("$(origin C)", "command line") |
62 | KBUILD_CHECKSRC = $(C) | |
1da177e4 LT |
63 | endif |
64 | ifndef KBUILD_CHECKSRC | |
65 | KBUILD_CHECKSRC = 0 | |
66 | endif | |
67 | ||
68 | # Use make M=dir to specify directory of external module to build | |
69 | # Old syntax make ... SUBDIRS=$PWD is still supported | |
70 | # Setting the environment variable KBUILD_EXTMOD take precedence | |
71 | ifdef SUBDIRS | |
72 | KBUILD_EXTMOD ?= $(SUBDIRS) | |
73 | endif | |
1da177e4 | 74 | |
b8b0618c CR |
75 | ifeq ("$(origin M)", "command line") |
76 | KBUILD_EXTMOD := $(M) | |
77 | endif | |
1da177e4 LT |
78 | |
79 | # kbuild supports saving output files in a separate directory. | |
80 | # To locate output files in a separate directory two syntaxes are supported. | |
81 | # In both cases the working directory must be the root of the kernel src. | |
82 | # 1) O= | |
83 | # Use "make O=dir/to/store/output/files/" | |
070b98bf | 84 | # |
1da177e4 LT |
85 | # 2) Set KBUILD_OUTPUT |
86 | # Set the environment variable KBUILD_OUTPUT to point to the directory | |
87 | # where the output files shall be placed. | |
88 | # export KBUILD_OUTPUT=dir/to/store/output/files/ | |
89 | # make | |
90 | # | |
91 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment | |
92 | # variable. | |
93 | ||
94 | ||
95 | # KBUILD_SRC is set on invocation of make in OBJ directory | |
96 | # KBUILD_SRC is not intended to be used by the regular user (for now) | |
97 | ifeq ($(KBUILD_SRC),) | |
98 | ||
99 | # OK, Make called in directory where kernel src resides | |
100 | # Do we want to locate output files in a separate directory? | |
b8b0618c CR |
101 | ifeq ("$(origin O)", "command line") |
102 | KBUILD_OUTPUT := $(O) | |
1da177e4 LT |
103 | endif |
104 | ||
4a5838ad BP |
105 | ifeq ("$(origin W)", "command line") |
106 | export KBUILD_ENABLE_EXTRA_GCC_CHECKS := 1 | |
107 | endif | |
108 | ||
1da177e4 | 109 | # That's our default target when none is given on the command line |
4f193362 | 110 | PHONY := _all |
1da177e4 LT |
111 | _all: |
112 | ||
1cacc9ab SR |
113 | # Cancel implicit rules on top Makefile |
114 | $(CURDIR)/Makefile Makefile: ; | |
115 | ||
1da177e4 LT |
116 | ifneq ($(KBUILD_OUTPUT),) |
117 | # Invoke a second make in the output directory, passing relevant variables | |
118 | # check that the output directory actually exists | |
119 | saved-output := $(KBUILD_OUTPUT) | |
120 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) | |
121 | $(if $(KBUILD_OUTPUT),, \ | |
122 | $(error output directory "$(saved-output)" does not exist)) | |
1da177e4 | 123 | |
0b35786d MM |
124 | PHONY += $(MAKECMDGOALS) sub-make |
125 | ||
1cacc9ab | 126 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
0b35786d MM |
127 | $(Q)@: |
128 | ||
129 | sub-make: FORCE | |
23a45e2c SR |
130 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
131 | KBUILD_SRC=$(CURDIR) \ | |
0b35786d MM |
132 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
133 | $(filter-out _all sub-make,$(MAKECMDGOALS)) | |
1da177e4 LT |
134 | |
135 | # Leave processing to above invocation of make | |
136 | skip-makefile := 1 | |
137 | endif # ifneq ($(KBUILD_OUTPUT),) | |
138 | endif # ifeq ($(KBUILD_SRC),) | |
139 | ||
140 | # We process the rest of the Makefile if this is the final invocation of make | |
141 | ifeq ($(skip-makefile),) | |
142 | ||
143 | # If building an external module we do not care about the all: rule | |
144 | # but instead _all depend on modules | |
4f193362 | 145 | PHONY += all |
1da177e4 LT |
146 | ifeq ($(KBUILD_EXTMOD),) |
147 | _all: all | |
148 | else | |
149 | _all: modules | |
150 | endif | |
151 | ||
152 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) | |
1da177e4 LT |
153 | objtree := $(CURDIR) |
154 | src := $(srctree) | |
155 | obj := $(objtree) | |
156 | ||
0f558c33 | 157 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
1da177e4 | 158 | |
11294235 | 159 | export srctree objtree VPATH |
1da177e4 | 160 | |
1da177e4 LT |
161 | |
162 | # SUBARCH tells the usermode build what the underlying arch is. That is set | |
163 | # first, and if a usermode build is happening, the "ARCH=um" on the command | |
164 | # line overrides the setting of ARCH below. If a native build is happening, | |
165 | # then ARCH is assigned, getting whatever value it gets normally, and | |
166 | # SUBARCH is subsequently ignored. | |
167 | ||
168 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ | |
169 | -e s/arm.*/arm/ -e s/sa110/arm/ \ | |
39990b5e | 170 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
236b1957 | 171 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
3cc000b5 | 172 | -e s/sh[234].*/sh/ ) |
1da177e4 LT |
173 | |
174 | # Cross compiling and selecting different set of gcc/bin-utils | |
175 | # --------------------------------------------------------------------------- | |
176 | # | |
177 | # When performing cross compilation for other architectures ARCH shall be set | |
178 | # to the target architecture. (See arch/* for the possibilities). | |
179 | # ARCH can be set during invocation of make: | |
180 | # make ARCH=ia64 | |
181 | # Another way is to have ARCH set in the environment. | |
182 | # The default ARCH is the host where make is executed. | |
183 | ||
184 | # CROSS_COMPILE specify the prefix used for all executables used | |
185 | # during compilation. Only gcc and related bin-utils executables | |
186 | # are prefixed with $(CROSS_COMPILE). | |
187 | # CROSS_COMPILE can be set on the command line | |
188 | # make CROSS_COMPILE=ia64-linux- | |
189 | # Alternatively CROSS_COMPILE can be set in the environment. | |
84336466 RM |
190 | # A third alternative is to store a setting in .config so that plain |
191 | # "make" in the configured kernel build directory always uses that. | |
1da177e4 LT |
192 | # Default value for CROSS_COMPILE is not to prefix executables |
193 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile | |
4ce6efed | 194 | export KBUILD_BUILDHOST := $(SUBARCH) |
2331d1a6 | 195 | ARCH ?= $(SUBARCH) |
84336466 | 196 | CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
1da177e4 LT |
197 | |
198 | # Architecture as present in compile.h | |
6752ed90 TG |
199 | UTS_MACHINE := $(ARCH) |
200 | SRCARCH := $(ARCH) | |
1da177e4 | 201 | |
d746d647 SR |
202 | # Additional ARCH settings for x86 |
203 | ifeq ($(ARCH),i386) | |
204 | SRCARCH := x86 | |
205 | endif | |
206 | ifeq ($(ARCH),x86_64) | |
207 | SRCARCH := x86 | |
208 | endif | |
74b469f2 | 209 | |
5e538790 | 210 | # Additional ARCH settings for sparc |
e69f58c0 NK |
211 | ifeq ($(ARCH),sparc32) |
212 | SRCARCH := sparc | |
213 | endif | |
a439fe51 | 214 | ifeq ($(ARCH),sparc64) |
5e538790 | 215 | SRCARCH := sparc |
a439fe51 | 216 | endif |
2fb9b1bd | 217 | |
3cc000b5 PM |
218 | # Additional ARCH settings for sh |
219 | ifeq ($(ARCH),sh64) | |
220 | SRCARCH := sh | |
221 | endif | |
222 | ||
5e538790 SR |
223 | # Where to locate arch specific headers |
224 | hdr-arch := $(SRCARCH) | |
225 | ||
49148020 SR |
226 | ifeq ($(ARCH),m68knommu) |
227 | hdr-arch := m68k | |
228 | endif | |
229 | ||
14cdd3c4 | 230 | KCONFIG_CONFIG ?= .config |
41263fc6 | 231 | export KCONFIG_CONFIG |
14cdd3c4 | 232 | |
1da177e4 LT |
233 | # SHELL used by kbuild |
234 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
235 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
236 | else echo sh; fi ; fi) | |
237 | ||
070b98bf SR |
238 | HOSTCC = gcc |
239 | HOSTCXX = g++ | |
25583d4b | 240 | HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer |
070b98bf | 241 | HOSTCXXFLAGS = -O2 |
1da177e4 | 242 | |
070b98bf SR |
243 | # Decide whether to build built-in, modular, or both. |
244 | # Normally, just do built-in. | |
1da177e4 LT |
245 | |
246 | KBUILD_MODULES := | |
247 | KBUILD_BUILTIN := 1 | |
248 | ||
249 | # If we have only "make modules", don't compile built-in objects. | |
250 | # When we're building modules with modversions, we need to consider | |
251 | # the built-in objects during the descend as well, in order to | |
070b98bf | 252 | # make sure the checksums are up to date before we record them. |
1da177e4 LT |
253 | |
254 | ifeq ($(MAKECMDGOALS),modules) | |
255 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) | |
256 | endif | |
257 | ||
258 | # If we have "make <whatever> modules", compile modules | |
259 | # in addition to whatever we do anyway. | |
260 | # Just "make" or "make all" shall build modules as well | |
261 | ||
262 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) | |
263 | KBUILD_MODULES := 1 | |
264 | endif | |
265 | ||
266 | ifeq ($(MAKECMDGOALS),) | |
267 | KBUILD_MODULES := 1 | |
268 | endif | |
269 | ||
e579d351 | 270 | export KBUILD_MODULES KBUILD_BUILTIN |
1da177e4 LT |
271 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
272 | ||
273 | # Beautify output | |
274 | # --------------------------------------------------------------------------- | |
275 | # | |
276 | # Normally, we echo the whole command before executing it. By making | |
277 | # that echo $($(quiet)$(cmd)), we now have the possibility to set | |
278 | # $(quiet) to choose other forms of output instead, e.g. | |
279 | # | |
280 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ | |
281 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | |
282 | # | |
283 | # If $(quiet) is empty, the whole command will be printed. | |
284 | # If it is set to "quiet_", only the short version will be printed. | |
070b98bf | 285 | # If it is set to "silent_", nothing will be printed at all, since |
1da177e4 LT |
286 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
287 | # | |
a58a414f | 288 | # A simple variant is to prefix commands with $(Q) - that's useful |
1da177e4 LT |
289 | # for commands that shall be hidden in non-verbose mode. |
290 | # | |
291 | # $(Q)ln $@ :< | |
292 | # | |
293 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. | |
294 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. | |
295 | ||
296 | ifeq ($(KBUILD_VERBOSE),1) | |
297 | quiet = | |
298 | Q = | |
299 | else | |
300 | quiet=quiet_ | |
301 | Q = @ | |
302 | endif | |
303 | ||
304 | # If the user is running make -s (silent mode), suppress echoing of | |
305 | # commands | |
306 | ||
307 | ifneq ($(findstring s,$(MAKEFLAGS)),) | |
308 | quiet=silent_ | |
309 | endif | |
310 | ||
311 | export quiet Q KBUILD_VERBOSE | |
312 | ||
1da177e4 LT |
313 | |
314 | # Look for make include files relative to root of kernel src | |
315 | MAKEFLAGS += --include-dir=$(srctree) | |
316 | ||
1cacc9ab SR |
317 | # We need some generic definitions (do not try to remake the file). |
318 | $(srctree)/scripts/Kbuild.include: ; | |
15964864 | 319 | include $(srctree)/scripts/Kbuild.include |
1da177e4 LT |
320 | |
321 | # Make variables (CC, etc...) | |
322 | ||
323 | AS = $(CROSS_COMPILE)as | |
324 | LD = $(CROSS_COMPILE)ld | |
325 | CC = $(CROSS_COMPILE)gcc | |
326 | CPP = $(CC) -E | |
327 | AR = $(CROSS_COMPILE)ar | |
328 | NM = $(CROSS_COMPILE)nm | |
329 | STRIP = $(CROSS_COMPILE)strip | |
330 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
331 | OBJDUMP = $(CROSS_COMPILE)objdump | |
332 | AWK = awk | |
333 | GENKSYMS = scripts/genksyms/genksyms | |
caa27b66 | 334 | INSTALLKERNEL := installkernel |
1da177e4 LT |
335 | DEPMOD = /sbin/depmod |
336 | KALLSYMS = scripts/kallsyms | |
337 | PERL = perl | |
338 | CHECK = sparse | |
339 | ||
80a7d1d9 HE |
340 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
341 | -Wbitwise -Wno-return-void $(CF) | |
6588169d SR |
342 | CFLAGS_MODULE = |
343 | AFLAGS_MODULE = | |
344 | LDFLAGS_MODULE = | |
1da177e4 LT |
345 | CFLAGS_KERNEL = |
346 | AFLAGS_KERNEL = | |
2521f2c2 | 347 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
1da177e4 LT |
348 | |
349 | ||
350 | # Use LINUXINCLUDE when you must reference the include/ directory. | |
351 | # Needed to be compatible with the O= option | |
24a675e8 | 352 | LINUXINCLUDE := -I$(srctree)/arch/$(hdr-arch)/include -Iinclude \ |
96f13045 | 353 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ |
264a2683 | 354 | -include include/generated/autoconf.h |
1da177e4 | 355 | |
d8672b40 | 356 | KBUILD_CPPFLAGS := -D__KERNEL__ |
1da177e4 | 357 | |
a0f97e06 | 358 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
94bed2a9 | 359 | -fno-strict-aliasing -fno-common \ |
a8735821 | 360 | -Werror-implicit-function-declaration \ |
a3ca86ae ET |
361 | -Wno-format-security \ |
362 | -fno-delete-null-pointer-checks | |
80c00ba9 SR |
363 | KBUILD_AFLAGS_KERNEL := |
364 | KBUILD_CFLAGS_KERNEL := | |
222d394d | 365 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
6588169d SR |
366 | KBUILD_AFLAGS_MODULE := -DMODULE |
367 | KBUILD_CFLAGS_MODULE := -DMODULE | |
368 | KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds | |
1da177e4 | 369 | |
f1d28fb0 RZ |
370 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
371 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) | |
2244cbd8 | 372 | KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) |
cb58455c | 373 | |
070b98bf | 374 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
80ef88d6 | 375 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
caa27b66 SR |
376 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
377 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE | |
070b98bf | 378 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
1da177e4 | 379 | |
06c5040c | 380 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
2521f2c2 | 381 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
222d394d | 382 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
6588169d | 383 | export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
80c00ba9 | 384 | export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
1da177e4 LT |
385 | |
386 | # When compiling out-of-tree modules, put MODVERDIR in the module | |
387 | # tree rather than in the kernel tree. The kernel tree might | |
388 | # even be read-only. | |
389 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions | |
390 | ||
1da177e4 LT |
391 | # Files to ignore in find ... statements |
392 | ||
406119f4 TM |
393 | 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 |
394 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git | |
1da177e4 LT |
395 | |
396 | # =========================================================================== | |
397 | # Rules shared between *config targets and build targets | |
398 | ||
399 | # Basic helpers built in scripts/ | |
4f193362 | 400 | PHONY += scripts_basic |
1da177e4 LT |
401 | scripts_basic: |
402 | $(Q)$(MAKE) $(build)=scripts/basic | |
638adb05 | 403 | $(Q)rm -f .tmp_quiet_recordmcount |
1da177e4 | 404 | |
cd05e6bd JB |
405 | # To avoid any implicit rule to kick in, define an empty command. |
406 | scripts/basic/%: scripts_basic ; | |
407 | ||
4f193362 | 408 | PHONY += outputmakefile |
fd5f0cd6 JB |
409 | # outputmakefile generates a Makefile in the output directory, if using a |
410 | # separate output directory. This allows convenient use of make in the | |
411 | # output directory. | |
1da177e4 | 412 | outputmakefile: |
fd5f0cd6 | 413 | ifneq ($(KBUILD_SRC),) |
92979997 | 414 | $(Q)ln -fsn $(srctree) source |
fd5f0cd6 JB |
415 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
416 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) | |
417 | endif | |
1da177e4 LT |
418 | |
419 | # To make sure we do not include .config for any of the *config targets | |
420 | # catch them early, and hand them over to scripts/kconfig/Makefile | |
421 | # It is allowed to specify more targets when calling make, including | |
422 | # mixing *config targets and build targets. | |
070b98bf | 423 | # For example 'make oldconfig all'. |
1da177e4 LT |
424 | # Detect when mixed targets is specified, and make a second invocation |
425 | # of make so .config is not included in this case either (for *config). | |
426 | ||
3eb3c740 | 427 | no-dot-config-targets := clean mrproper distclean \ |
f4ed1009 | 428 | cscope gtags TAGS tags help %docs check% coccicheck \ |
3eb3c740 | 429 | include/linux/version.h headers_% \ |
4aed2fd8 | 430 | kernelversion %src-pkg |
1da177e4 LT |
431 | |
432 | config-targets := 0 | |
433 | mixed-targets := 0 | |
434 | dot-config := 1 | |
435 | ||
436 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
437 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
438 | dot-config := 0 | |
439 | endif | |
440 | endif | |
441 | ||
442 | ifeq ($(KBUILD_EXTMOD),) | |
443 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) | |
444 | config-targets := 1 | |
445 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) | |
446 | mixed-targets := 1 | |
447 | endif | |
448 | endif | |
449 | endif | |
450 | ||
451 | ifeq ($(mixed-targets),1) | |
452 | # =========================================================================== | |
453 | # We're called with mixed targets (*config and build targets). | |
454 | # Handle them one by one. | |
455 | ||
456 | %:: FORCE | |
457 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ | |
458 | ||
459 | else | |
460 | ifeq ($(config-targets),1) | |
461 | # =========================================================================== | |
462 | # *config targets only - make sure prerequisites are updated, and descend | |
463 | # in scripts/kconfig to make the *config target | |
464 | ||
465 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. | |
466 | # KBUILD_DEFCONFIG may point out an alternative default configuration | |
467 | # used for 'make defconfig' | |
74b469f2 | 468 | include $(srctree)/arch/$(SRCARCH)/Makefile |
61bee204 | 469 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
1da177e4 | 470 | |
31110ebb SR |
471 | config: scripts_basic outputmakefile FORCE |
472 | $(Q)mkdir -p include/linux include/config | |
473 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ | |
474 | ||
475 | %config: scripts_basic outputmakefile FORCE | |
c955ccaf | 476 | $(Q)mkdir -p include/linux include/config |
1da177e4 LT |
477 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
478 | ||
479 | else | |
480 | # =========================================================================== | |
481 | # Build targets only - this includes vmlinux, arch specific targets, clean | |
482 | # targets and others. In general all targets except *config targets. | |
483 | ||
484 | ifeq ($(KBUILD_EXTMOD),) | |
485 | # Additional helpers built in scripts/ | |
486 | # Carefully list dependencies so we do not try to build scripts twice | |
070b98bf | 487 | # in parallel |
4f193362 | 488 | PHONY += scripts |
bc081dd6 | 489 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf |
1da177e4 LT |
490 | $(Q)$(MAKE) $(build)=$(@) |
491 | ||
1da177e4 LT |
492 | # Objects we will link into vmlinux / subdirs we need to visit |
493 | init-y := init/ | |
4d2acfbf | 494 | drivers-y := drivers/ sound/ firmware/ |
1da177e4 LT |
495 | net-y := net/ |
496 | libs-y := lib/ | |
497 | core-y := usr/ | |
498 | endif # KBUILD_EXTMOD | |
499 | ||
500 | ifeq ($(dot-config),1) | |
9ee4e336 SR |
501 | # Read in config |
502 | -include include/config/auto.conf | |
1da177e4 | 503 | |
9ee4e336 | 504 | ifeq ($(KBUILD_EXTMOD),) |
1da177e4 LT |
505 | # Read in dependencies to all Kconfig* files, make sure to run |
506 | # oldconfig if changes are detected. | |
c955ccaf | 507 | -include include/config/auto.conf.cmd |
1da177e4 | 508 | |
1da177e4 | 509 | # To avoid any implicit rule to kick in, define an empty command |
14cdd3c4 | 510 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
1da177e4 | 511 | |
c955ccaf | 512 | # If .config is newer than include/config/auto.conf, someone tinkered |
752625cf | 513 | # with it and forgot to run make oldconfig. |
070b98bf | 514 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
752625cf | 515 | # we execute the config step to be sure to catch updated Kconfig files |
bc081dd6 | 516 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
1da177e4 | 517 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
3041e47e | 518 | else |
264a2683 | 519 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
9ee4e336 SR |
520 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
521 | PHONY += include/config/auto.conf | |
522 | ||
523 | include/config/auto.conf: | |
264a2683 | 524 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
9ee4e336 SR |
525 | echo; \ |
526 | echo " ERROR: Kernel configuration is invalid."; \ | |
264a2683 | 527 | echo " include/generated/autoconf.h or $@ are missing.";\ |
9ee4e336 SR |
528 | echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ |
529 | echo; \ | |
530 | /bin/false) | |
531 | ||
532 | endif # KBUILD_EXTMOD | |
c955ccaf | 533 | |
1da177e4 LT |
534 | else |
535 | # Dummy target needed, because used as prerequisite | |
c955ccaf | 536 | include/config/auto.conf: ; |
9ee4e336 | 537 | endif # $(dot-config) |
1da177e4 LT |
538 | |
539 | # The all: target is the default when no target is given on the | |
540 | # command line. | |
541 | # This allow a user to issue only 'make' to build a kernel including modules | |
c8447161 | 542 | # Defaults to vmlinux, but the arch makefile usually adds further targets |
1da177e4 LT |
543 | all: vmlinux |
544 | ||
545 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE | |
a0f97e06 | 546 | KBUILD_CFLAGS += -Os |
1da177e4 | 547 | else |
a0f97e06 | 548 | KBUILD_CFLAGS += -O2 |
1da177e4 LT |
549 | endif |
550 | ||
bef5b54b RB |
551 | include $(srctree)/arch/$(SRCARCH)/Makefile |
552 | ||
08f67461 | 553 | ifneq ($(CONFIG_FRAME_WARN),0) |
35bb5b1e AK |
554 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
555 | endif | |
556 | ||
e06b8b98 | 557 | # Force gcc to behave correct even for buggy distributions |
5d707e9c | 558 | ifndef CONFIG_CC_STACKPROTECTOR |
e06b8b98 | 559 | KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
5d707e9c | 560 | endif |
e06b8b98 | 561 | |
1da177e4 | 562 | ifdef CONFIG_FRAME_POINTER |
a0f97e06 | 563 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
1da177e4 | 564 | else |
7e9501fd RV |
565 | # Some targets (ARM with Thumb2, for example), can't be built with frame |
566 | # pointers. For those, we don't have FUNCTION_TRACER automatically | |
567 | # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is | |
568 | # incompatible with -fomit-frame-pointer with current GCC, so we don't use | |
569 | # -fomit-frame-pointer with FUNCTION_TRACER. | |
570 | ifndef CONFIG_FUNCTION_TRACER | |
a0f97e06 | 571 | KBUILD_CFLAGS += -fomit-frame-pointer |
1da177e4 | 572 | endif |
7e9501fd | 573 | endif |
1da177e4 LT |
574 | |
575 | ifdef CONFIG_DEBUG_INFO | |
a0f97e06 | 576 | KBUILD_CFLAGS += -g |
222d394d | 577 | KBUILD_AFLAGS += -gdwarf-2 |
1da177e4 LT |
578 | endif |
579 | ||
d6f4ceb7 AK |
580 | ifdef CONFIG_DEBUG_INFO_REDUCED |
581 | KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) | |
582 | endif | |
583 | ||
606576ce | 584 | ifdef CONFIG_FUNCTION_TRACER |
16444a8a | 585 | KBUILD_CFLAGS += -pg |
72441cb1 | 586 | ifdef CONFIG_DYNAMIC_FTRACE |
cf4db259 | 587 | ifdef CONFIG_HAVE_C_RECORDMCOUNT |
72441cb1 SR |
588 | BUILD_C_RECORDMCOUNT := y |
589 | export BUILD_C_RECORDMCOUNT | |
590 | endif | |
591 | endif | |
16444a8a ACM |
592 | endif |
593 | ||
91341d4b SR |
594 | # We trigger additional mismatches with less inlining |
595 | ifdef CONFIG_DEBUG_SECTION_MISMATCH | |
596 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) | |
597 | endif | |
598 | ||
e8e69931 | 599 | # arch Makefile may override CC so keep this after arch Makefile is included |
e8f5bdb0 | 600 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
e8e69931 SR |
601 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
602 | ||
1da177e4 | 603 | # warn about C99 declaration after statement |
a0f97e06 | 604 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
1da177e4 | 605 | |
070b98bf | 606 | # disable pointer signed / unsigned warnings in gcc 4.0 |
a0f97e06 | 607 | KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) |
1da177e4 | 608 | |
fe8d0a41 | 609 | # disable invalid "can't wrap" optimizations for signed / pointers |
a137802e | 610 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
d0115552 | 611 | |
8f7f5c9f AK |
612 | # conserve stack if available |
613 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) | |
614 | ||
bf5438fc JB |
615 | # check for 'asm goto' |
616 | ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) | |
617 | KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO | |
618 | endif | |
619 | ||
06c5040c | 620 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
69ee0b35 SR |
621 | # But warn user when we do so |
622 | warn-assign = \ | |
623 | $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") | |
624 | ||
625 | ifneq ($(KCPPFLAGS),) | |
626 | $(call warn-assign,CPPFLAGS) | |
627 | KBUILD_CPPFLAGS += $(KCPPFLAGS) | |
628 | endif | |
629 | ifneq ($(KAFLAGS),) | |
630 | $(call warn-assign,AFLAGS) | |
631 | KBUILD_AFLAGS += $(KAFLAGS) | |
632 | endif | |
633 | ifneq ($(KCFLAGS),) | |
634 | $(call warn-assign,CFLAGS) | |
635 | KBUILD_CFLAGS += $(KCFLAGS) | |
636 | endif | |
52bcc330 | 637 | |
18991197 RM |
638 | # Use --build-id when available. |
639 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ | |
f86fd306 | 640 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
6588169d | 641 | KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
18991197 RM |
642 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
643 | ||
5d7d18f5 | 644 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
d79a2719 | 645 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
5d7d18f5 DH |
646 | endif |
647 | ||
1da177e4 | 648 | # Default kernel image to build when no specific target is given. |
070b98bf | 649 | # KBUILD_IMAGE may be overruled on the command line or |
1da177e4 LT |
650 | # set in the environment |
651 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over | |
652 | # this default value | |
653 | export KBUILD_IMAGE ?= vmlinux | |
654 | ||
655 | # | |
656 | # INSTALL_PATH specifies where to place the updated kernel and system map | |
657 | # images. Default is /boot, but you can set it to other values | |
658 | export INSTALL_PATH ?= /boot | |
659 | ||
660 | # | |
661 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory | |
662 | # relocations required by build roots. This is not defined in the | |
070b98bf | 663 | # makefile but the argument can be passed to make if needed. |
1da177e4 LT |
664 | # |
665 | ||
df9df036 | 666 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4 LT |
667 | export MODLIB |
668 | ||
ac031f26 | 669 | # |
2ea03891 SR |
670 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
671 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then | |
672 | # the default option --strip-debug will be used. Otherwise, | |
177b241d | 673 | # INSTALL_MOD_STRIP value will be used as the options to the strip command. |
2ea03891 | 674 | |
ac031f26 TT |
675 | ifdef INSTALL_MOD_STRIP |
676 | ifeq ($(INSTALL_MOD_STRIP),1) | |
2ea03891 | 677 | mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26 | 678 | else |
2ea03891 | 679 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
ac031f26 TT |
680 | endif # INSTALL_MOD_STRIP=1 |
681 | else | |
2ea03891 | 682 | mod_strip_cmd = true |
ac031f26 TT |
683 | endif # INSTALL_MOD_STRIP |
684 | export mod_strip_cmd | |
685 | ||
1da177e4 LT |
686 | |
687 | ifeq ($(KBUILD_EXTMOD),) | |
3a65dfe8 | 688 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4 LT |
689 | |
690 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ | |
691 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ | |
692 | $(net-y) $(net-m) $(libs-y) $(libs-m))) | |
693 | ||
694 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ | |
695 | $(init-n) $(init-) \ | |
696 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ | |
697 | $(net-n) $(net-) $(libs-n) $(libs-)))) | |
698 | ||
699 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) | |
700 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) | |
701 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) | |
702 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) | |
703 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) | |
704 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) | |
705 | libs-y := $(libs-y1) $(libs-y2) | |
706 | ||
707 | # Build vmlinux | |
708 | # --------------------------------------------------------------------------- | |
070b98bf | 709 | # vmlinux is built from the objects selected by $(vmlinux-init) and |
1da177e4 | 710 | # $(vmlinux-main). Most are built-in.o files from top-level directories |
2462566f | 711 | # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. |
1da177e4 LT |
712 | # Ordering when linking is important, and $(vmlinux-init) must be first. |
713 | # | |
714 | # vmlinux | |
715 | # ^ | |
716 | # | | |
717 | # +-< $(vmlinux-init) | |
718 | # | +--< init/version.o + more | |
719 | # | | |
720 | # +--< $(vmlinux-main) | |
721 | # | +--< driver/built-in.o mm/built-in.o + more | |
722 | # | | |
723 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) | |
724 | # | |
725 | # vmlinux version (uname -v) cannot be updated during normal | |
726 | # descending-into-subdirs phase since we do not yet know if we need to | |
727 | # update vmlinux. | |
728 | # Therefore this step is delayed until just before final link of vmlinux - | |
729 | # except in the kallsyms case where it is done just before adding the | |
730 | # symbols to the kernel. | |
731 | # | |
732 | # System.map is generated to document addresses of all kernel symbols | |
733 | ||
734 | vmlinux-init := $(head-y) $(init-y) | |
735 | vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) | |
736 | vmlinux-all := $(vmlinux-init) $(vmlinux-main) | |
6752ed90 | 737 | vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds |
85bd2fdd | 738 | export KBUILD_VMLINUX_OBJS := $(vmlinux-all) |
1da177e4 LT |
739 | |
740 | # Rule to link vmlinux - also used during CONFIG_KALLSYMS | |
741 | # May be overridden by arch/$(ARCH)/Makefile | |
742 | quiet_cmd_vmlinux__ ?= LD $@ | |
743 | cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ | |
744 | -T $(vmlinux-lds) $(vmlinux-init) \ | |
745 | --start-group $(vmlinux-main) --end-group \ | |
741f98fe | 746 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) |
1da177e4 LT |
747 | |
748 | # Generate new vmlinux version | |
749 | quiet_cmd_vmlinux_version = GEN .version | |
750 | cmd_vmlinux_version = set -e; \ | |
4e25d8bb JB |
751 | if [ ! -r .version ]; then \ |
752 | rm -f .version; \ | |
753 | echo 1 >.version; \ | |
754 | else \ | |
755 | mv .version .old_version; \ | |
756 | expr 0$$(cat .old_version) + 1 >.version; \ | |
757 | fi; \ | |
1da177e4 LT |
758 | $(MAKE) $(build)=init |
759 | ||
760 | # Generate System.map | |
070b98bf | 761 | quiet_cmd_sysmap = SYSMAP |
1da177e4 LT |
762 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap |
763 | ||
764 | # Link of vmlinux | |
765 | # If CONFIG_KALLSYMS is set .version is already updated | |
766 | # Generate System.map and verify that the content is consistent | |
39ca371c MR |
767 | # Use + in front of the vmlinux_version rule to silent warning with make -j2 |
768 | # First command is ':' to allow us to use + in front of the rule | |
1da177e4 | 769 | define rule_vmlinux__ |
39ca371c | 770 | : |
1da177e4 LT |
771 | $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) |
772 | ||
773 | $(call cmd,vmlinux__) | |
774 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
775 | ||
4635281c SR |
776 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
777 | echo ' $($(quiet)cmd_sysmap) System.map' &&) \ | |
778 | $(cmd_sysmap) $@ System.map; \ | |
779 | if [ $$? -ne 0 ]; then \ | |
780 | rm -f $@; \ | |
781 | /bin/false; \ | |
1da177e4 LT |
782 | fi; |
783 | $(verify_kallsyms) | |
784 | endef | |
785 | ||
786 | ||
787 | ifdef CONFIG_KALLSYMS | |
788 | # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) | |
789 | # It's a three stage process: | |
790 | # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is | |
791 | # empty | |
792 | # Running kallsyms on that gives us .tmp_kallsyms1.o with | |
793 | # the right size - vmlinux version (uname -v) is updated during this step | |
794 | # o .tmp_vmlinux2 now has a __kallsyms section of the right size, | |
795 | # but due to the added section, some addresses have shifted. | |
796 | # From here, we generate a correct .tmp_kallsyms2.o | |
797 | # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. | |
798 | # o Verify that the System.map from vmlinux matches the map from | |
799 | # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. | |
800 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using | |
801 | # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a | |
802 | # temporary bypass to allow the kernel to be built while the | |
803 | # maintainers work out what went wrong with kallsyms. | |
804 | ||
805 | ifdef CONFIG_KALLSYMS_EXTRA_PASS | |
806 | last_kallsyms := 3 | |
807 | else | |
808 | last_kallsyms := 2 | |
809 | endif | |
810 | ||
811 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o | |
812 | ||
813 | define verify_kallsyms | |
4635281c SR |
814 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
815 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ | |
1da177e4 | 816 | $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map |
4635281c SR |
817 | $(Q)cmp -s System.map .tmp_System.map || \ |
818 | (echo Inconsistent kallsyms data; \ | |
819 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ | |
1da177e4 LT |
820 | rm .tmp_kallsyms* ; /bin/false ) |
821 | endef | |
822 | ||
823 | # Update vmlinux version before link | |
824 | # Use + in front of this rule to silent warning about make -j1 | |
72ba47c1 | 825 | # First command is ':' to allow us to use + in front of this rule |
1da177e4 LT |
826 | cmd_ksym_ld = $(cmd_vmlinux__) |
827 | define rule_ksym_ld | |
72ba47c1 | 828 | : |
1da177e4 LT |
829 | +$(call cmd,vmlinux_version) |
830 | $(call cmd,vmlinux__) | |
831 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
832 | endef | |
833 | ||
834 | # Generate .S file with all kernel symbols | |
835 | quiet_cmd_kallsyms = KSYM $@ | |
2ea03891 SR |
836 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ |
837 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ | |
9bb48247 | 838 | |
2ea03891 | 839 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE |
1da177e4 LT |
840 | $(call if_changed_dep,as_o_S) |
841 | ||
2ea03891 | 842 | .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) |
1da177e4 LT |
843 | $(call cmd,kallsyms) |
844 | ||
845 | # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version | |
2ea03891 SR |
846 | .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE |
847 | $(call if_changed_rule,ksym_ld) | |
1da177e4 | 848 | |
2ea03891 SR |
849 | .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE |
850 | $(call if_changed,vmlinux__) | |
1da177e4 | 851 | |
2ea03891 SR |
852 | .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE |
853 | $(call if_changed,vmlinux__) | |
1da177e4 LT |
854 | |
855 | # Needs to visit scripts/ before $(KALLSYMS) can be used. | |
856 | $(KALLSYMS): scripts ; | |
857 | ||
33bc25ea SR |
858 | # Generate some data for debugging strange kallsyms problems |
859 | debug_kallsyms: .tmp_map$(last_kallsyms) | |
860 | ||
861 | .tmp_map%: .tmp_vmlinux% FORCE | |
862 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ | |
863 | ||
864 | .tmp_map3: .tmp_map2 | |
865 | ||
866 | .tmp_map2: .tmp_map1 | |
867 | ||
1da177e4 LT |
868 | endif # ifdef CONFIG_KALLSYMS |
869 | ||
741f98fe SR |
870 | # Do modpost on a prelinked vmlinux. The finally linked vmlinux has |
871 | # relevant sections renamed as per the linker script. | |
872 | quiet_cmd_vmlinux-modpost = LD $@ | |
873 | cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ | |
874 | $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ | |
90ebd878 | 875 | $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) |
741f98fe SR |
876 | define rule_vmlinux-modpost |
877 | : | |
878 | +$(call cmd,vmlinux-modpost) | |
879 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ | |
880 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd | |
881 | endef | |
882 | ||
1da177e4 | 883 | # vmlinux image - including updated kernel symbols |
310f8243 | 884 | vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE |
0f836e5f | 885 | ifdef CONFIG_HEADERS_CHECK |
0e7af8d0 | 886 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
267c4025 MD |
887 | endif |
888 | ifdef CONFIG_SAMPLES | |
889 | $(Q)$(MAKE) $(build)=samples | |
3794f3e8 RD |
890 | endif |
891 | ifdef CONFIG_BUILD_DOCSRC | |
892 | $(Q)$(MAKE) $(build)=Documentation | |
0f836e5f | 893 | endif |
741f98fe | 894 | $(call vmlinux-modpost) |
1da177e4 | 895 | $(call if_changed_rule,vmlinux__) |
4e25d8bb | 896 | $(Q)rm -f .old_version |
1da177e4 | 897 | |
310f8243 | 898 | # build vmlinux.o first to catch section mismatch errors early |
cf87dcd1 SR |
899 | ifdef CONFIG_KALLSYMS |
900 | .tmp_vmlinux1: vmlinux.o | |
901 | endif | |
90ebd878 SR |
902 | |
903 | modpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) | |
904 | vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE | |
741f98fe SR |
905 | $(call if_changed_rule,vmlinux-modpost) |
906 | ||
1da177e4 LT |
907 | # The actual objects are generated when descending, |
908 | # make sure no implicit rule kicks in | |
909 | $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; | |
910 | ||
911 | # Handle descending into subdirectories listed in $(vmlinux-dirs) | |
912 | # Preset locale variables to speed up the build process. Limit locale | |
913 | # tweaks to this spot to avoid wrong language settings when running | |
914 | # make menuconfig etc. | |
915 | # Error messages still appears in the original language | |
916 | ||
4f193362 | 917 | PHONY += $(vmlinux-dirs) |
5bb78269 | 918 | $(vmlinux-dirs): prepare scripts |
1da177e4 LT |
919 | $(Q)$(MAKE) $(build)=$@ |
920 | ||
f1d28fb0 | 921 | # Store (new) KERNELRELASE string in include/config/kernel.release |
f1d28fb0 | 922 | include/config/kernel.release: include/config/auto.conf FORCE |
2244cbd8 | 923 | $(Q)rm -f $@ |
7263e715 | 924 | $(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@ |
cb58455c SR |
925 | |
926 | ||
1da177e4 | 927 | # Things we need to do before we recursively start building the kernel |
5bb78269 SR |
928 | # or the modules are listed in "prepare". |
929 | # A multi level approach is used. prepareN is processed before prepareN-1. | |
930 | # archprepare is used in arch Makefiles and when processed asm symlink, | |
931 | # version.h and scripts_basic is processed / created. | |
1da177e4 | 932 | |
5bb78269 | 933 | # Listed in dependency order |
4f193362 | 934 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb78269 | 935 | |
86feeaa8 | 936 | # prepare3 is used to check if we are building in a separate output directory, |
1da177e4 LT |
937 | # and if so do: |
938 | # 1) Check that make has not been executed in the kernel src $(srctree) | |
f1d28fb0 | 939 | prepare3: include/config/kernel.release |
1da177e4 | 940 | ifneq ($(KBUILD_SRC),) |
fd54f502 | 941 | @$(kecho) ' Using $(srctree) as source for kernel' |
c955ccaf | 942 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
1da177e4 LT |
943 | echo " $(srctree) is not clean, please run 'make mrproper'";\ |
944 | echo " in the '$(srctree)' directory.";\ | |
945 | /bin/false; \ | |
946 | fi; | |
1da177e4 LT |
947 | endif |
948 | ||
86feeaa8 SR |
949 | # prepare2 creates a makefile if using a separate output directory |
950 | prepare2: prepare3 outputmakefile | |
1da177e4 | 951 | |
273b281f | 952 | prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \ |
f7f16b77 | 953 | include/config/auto.conf |
7bb9d092 | 954 | $(cmd_crmodverdir) |
1da177e4 | 955 | |
5bb78269 SR |
956 | archprepare: prepare1 scripts_basic |
957 | ||
958 | prepare0: archprepare FORCE | |
8d36a623 | 959 | $(Q)$(MAKE) $(build)=. |
c53aeca0 | 960 | $(Q)$(MAKE) $(build)=. missing-syscalls |
86feeaa8 | 961 | |
1da177e4 | 962 | # All the preparing.. |
d395efb5 | 963 | prepare: prepare0 |
1da177e4 | 964 | |
1da177e4 LT |
965 | # Generate some files |
966 | # --------------------------------------------------------------------------- | |
967 | ||
968 | # KERNELRELEASE can change from a few different places, meaning version.h | |
969 | # needs to be updated, so this check is forced on all builds | |
970 | ||
971 | uts_len := 64 | |
63104eec SR |
972 | define filechk_utsrelease.h |
973 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ | |
974 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ | |
975 | exit 1; \ | |
976 | fi; \ | |
977 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) | |
978 | endef | |
1da177e4 LT |
979 | |
980 | define filechk_version.h | |
63104eec SR |
981 | (echo \#define LINUX_VERSION_CODE $(shell \ |
982 | expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ | |
983 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) | |
1da177e4 LT |
984 | endef |
985 | ||
63104eec | 986 | include/linux/version.h: $(srctree)/Makefile FORCE |
1da177e4 LT |
987 | $(call filechk,version.h) |
988 | ||
273b281f | 989 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
63104eec SR |
990 | $(call filechk,utsrelease.h) |
991 | ||
179efcb4 VN |
992 | PHONY += headerdep |
993 | headerdep: | |
994 | $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl | |
995 | ||
1da177e4 LT |
996 | # --------------------------------------------------------------------------- |
997 | ||
4f193362 | 998 | PHONY += depend dep |
1da177e4 LT |
999 | depend dep: |
1000 | @echo '*** Warning: make $@ is unnecessary now.' | |
1001 | ||
88ecf814 DW |
1002 | # --------------------------------------------------------------------------- |
1003 | # Firmware install | |
1004 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware | |
1005 | export INSTALL_FW_PATH | |
1006 | ||
1007 | PHONY += firmware_install | |
1008 | firmware_install: FORCE | |
1009 | @mkdir -p $(objtree)/firmware | |
1010 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install | |
1011 | ||
8d730cfb DW |
1012 | # --------------------------------------------------------------------------- |
1013 | # Kernel headers | |
8d730cfb | 1014 | |
e6883b18 SR |
1015 | #Default location for installed headers |
1016 | export INSTALL_HDR_PATH = $(objtree)/usr | |
6d716275 | 1017 | |
e6883b18 | 1018 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
2fb9b1bd SR |
1019 | |
1020 | # If we do an all arch process set dst to asm-$(hdr-arch) | |
1021 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) | |
e6883b18 SR |
1022 | |
1023 | PHONY += __headers | |
1024 | __headers: include/linux/version.h scripts_basic FORCE | |
e1b702cf | 1025 | $(Q)$(MAKE) $(build)=scripts build_unifdef |
e6883b18 SR |
1026 | |
1027 | PHONY += headers_install_all | |
2fb9b1bd SR |
1028 | headers_install_all: |
1029 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install | |
6d716275 | 1030 | |
8d730cfb | 1031 | PHONY += headers_install |
e6883b18 | 1032 | headers_install: __headers |
c95fa08a | 1033 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \ |
2fb9b1bd | 1034 | $(error Headers not exportable for the $(SRCARCH) architecture)) |
88181ec3 | 1035 | $(Q)$(MAKE) $(hdr-inst)=include |
c95fa08a | 1036 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) |
8d730cfb | 1037 | |
1f85712e MF |
1038 | PHONY += headers_check_all |
1039 | headers_check_all: headers_install_all | |
2fb9b1bd | 1040 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
1f85712e | 1041 | |
68475359 DW |
1042 | PHONY += headers_check |
1043 | headers_check: headers_install | |
88181ec3 | 1044 | $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 |
c95fa08a | 1045 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1 |
68475359 | 1046 | |
1da177e4 LT |
1047 | # --------------------------------------------------------------------------- |
1048 | # Modules | |
1049 | ||
1050 | ifdef CONFIG_MODULES | |
1051 | ||
070b98bf | 1052 | # By default, build modules as well |
1da177e4 | 1053 | |
73d1393e | 1054 | all: modules |
1da177e4 LT |
1055 | |
1056 | # Build modules | |
551559e1 TH |
1057 | # |
1058 | # A module can be listed more than once in obj-m resulting in | |
1059 | # duplicate lines in modules.order files. Those are removed | |
1060 | # using awk while concatenating to the final file. | |
1da177e4 | 1061 | |
4f193362 | 1062 | PHONY += modules |
2da30e70 | 1063 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
551559e1 | 1064 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
fd54f502 | 1065 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1066 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
44463f7d | 1067 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
1da177e4 | 1068 | |
a6c36632 MM |
1069 | modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
1070 | $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin | |
1071 | ||
73d1393e | 1072 | %/modules.builtin: include/config/auto.conf |
a6c36632 MM |
1073 | $(Q)$(MAKE) $(modbuiltin)=$* |
1074 | ||
1da177e4 LT |
1075 | |
1076 | # Target to prepare building external modules | |
4f193362 | 1077 | PHONY += modules_prepare |
5bb78269 | 1078 | modules_prepare: prepare scripts |
1da177e4 LT |
1079 | |
1080 | # Target to install modules | |
4f193362 | 1081 | PHONY += modules_install |
1da177e4 LT |
1082 | modules_install: _modinst_ _modinst_post |
1083 | ||
4f193362 | 1084 | PHONY += _modinst_ |
2da30e70 | 1085 | _modinst_: |
ce454d4d | 1086 | @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ |
1da177e4 LT |
1087 | echo "Warning: you may need to install module-init-tools"; \ |
1088 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ | |
1089 | sleep 1; \ | |
1090 | fi | |
1091 | @rm -rf $(MODLIB)/kernel | |
1092 | @rm -f $(MODLIB)/source | |
1093 | @mkdir -p $(MODLIB)/kernel | |
1094 | @ln -s $(srctree) $(MODLIB)/source | |
1095 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ | |
1096 | rm -f $(MODLIB)/build ; \ | |
1097 | ln -s $(objtree) $(MODLIB)/build ; \ | |
1098 | fi | |
551559e1 | 1099 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
bc081dd6 | 1100 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
b805aa0e | 1101 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1102 | |
50a8ec31 | 1103 | # This depmod is only for convenience to give the initial |
1da177e4 LT |
1104 | # boot a modules.dep even before / is mounted read-write. However the |
1105 | # boot script depmod is the master version. | |
4f193362 | 1106 | PHONY += _modinst_post |
1da177e4 | 1107 | _modinst_post: _modinst_ |
88ecf814 | 1108 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
50a8ec31 | 1109 | $(call cmd,depmod) |
1da177e4 LT |
1110 | |
1111 | else # CONFIG_MODULES | |
1112 | ||
1113 | # Modules not configured | |
1114 | # --------------------------------------------------------------------------- | |
1115 | ||
1116 | modules modules_install: FORCE | |
1117 | @echo | |
1118 | @echo "The present kernel configuration has modules disabled." | |
1119 | @echo "Type 'make config' and enable loadable module support." | |
1120 | @echo "Then build a kernel with module support enabled." | |
1121 | @echo | |
1122 | @exit 1 | |
1123 | ||
1124 | endif # CONFIG_MODULES | |
1125 | ||
1da177e4 LT |
1126 | ### |
1127 | # Cleaning is done on three levels. | |
1128 | # make clean Delete most generated files | |
1129 | # Leave enough to build external modules | |
1130 | # make mrproper Delete the current configuration, and all generated files | |
1131 | # make distclean Remove editor backup files, patch leftover files and the like | |
1132 | ||
1133 | # Directories & files removed with 'make clean' | |
1134 | CLEAN_DIRS += $(MODVERDIR) | |
1135 | CLEAN_FILES += vmlinux System.map \ | |
1136 | .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map | |
1137 | ||
1138 | # Directories & files removed with 'make mrproper' | |
96f13045 | 1139 | MRPROPER_DIRS += include/config usr/include include/generated |
f7f16b77 | 1140 | MRPROPER_FILES += .config .config.old .version .old_version \ |
264a2683 | 1141 | include/linux/version.h \ |
f4ed1009 | 1142 | Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS |
1da177e4 LT |
1143 | |
1144 | # clean - Delete most, but leave enough to build external modules | |
1145 | # | |
1146 | clean: rm-dirs := $(CLEAN_DIRS) | |
1147 | clean: rm-files := $(CLEAN_FILES) | |
c47f214a | 1148 | clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation) |
1da177e4 | 1149 | |
4f193362 | 1150 | PHONY += $(clean-dirs) clean archclean |
1da177e4 LT |
1151 | $(clean-dirs): |
1152 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1153 | ||
88d7be03 | 1154 | clean: archclean |
1da177e4 LT |
1155 | |
1156 | # mrproper - Delete all generated files, including .config | |
1157 | # | |
1158 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) | |
1159 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) | |
1160 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) | |
1161 | ||
4f193362 | 1162 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4 LT |
1163 | $(mrproper-dirs): |
1164 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) | |
1165 | ||
1166 | mrproper: clean archmrproper $(mrproper-dirs) | |
1167 | $(call cmd,rmdirs) | |
1168 | $(call cmd,rmfiles) | |
1169 | ||
1170 | # distclean | |
1171 | # | |
4f193362 | 1172 | PHONY += distclean |
1da177e4 LT |
1173 | |
1174 | distclean: mrproper | |
1175 | @find $(srctree) $(RCS_FIND_IGNORE) \ | |
070b98bf | 1176 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1da177e4 | 1177 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
070b98bf | 1178 | -o -name '.*.rej' -o -size 0 \ |
1da177e4 LT |
1179 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
1180 | -type f -print | xargs rm -f | |
1181 | ||
1182 | ||
1183 | # Packaging of the kernel to various formats | |
1184 | # --------------------------------------------------------------------------- | |
1185 | # rpm target kept for backward compatibility | |
1186 | package-dir := $(srctree)/scripts/package | |
1187 | ||
bafb6747 ACM |
1188 | %src-pkg: FORCE |
1189 | $(Q)$(MAKE) $(build)=$(package-dir) $@ | |
031ecc6d | 1190 | %pkg: include/config/kernel.release FORCE |
6c2133e1 | 1191 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6d | 1192 | rpm: include/config/kernel.release FORCE |
6c2133e1 | 1193 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4 LT |
1194 | |
1195 | ||
1196 | # Brief documentation of the typical targets used | |
1197 | # --------------------------------------------------------------------------- | |
1198 | ||
5dffbe81 | 1199 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
1da177e4 | 1200 | boards := $(notdir $(boards)) |
5dffbe81 SB |
1201 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
1202 | board-dirs := $(sort $(notdir $(board-dirs:/=))) | |
1da177e4 LT |
1203 | |
1204 | help: | |
1205 | @echo 'Cleaning targets:' | |
5ea084ef | 1206 | @echo ' clean - Remove most generated files but keep the config and' |
5cc8d246 | 1207 | @echo ' enough build support to build external modules' |
5ea084ef | 1208 | @echo ' mrproper - Remove all generated files + config + various backup files' |
5cc8d246 | 1209 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4 LT |
1210 | @echo '' |
1211 | @echo 'Configuration targets:' | |
1212 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help | |
1213 | @echo '' | |
1214 | @echo 'Other generic targets:' | |
1215 | @echo ' all - Build all targets marked with [*]' | |
1216 | @echo '* vmlinux - Build the bare kernel' | |
1217 | @echo '* modules - Build all modules' | |
9cc5d74c | 1218 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
88ecf814 DW |
1219 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
1220 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' | |
1da177e4 | 1221 | @echo ' dir/ - Build all files in dir and below' |
62718979 JP |
1222 | @echo ' dir/file.[oisS] - Build specified target only' |
1223 | @echo ' dir/file.lst - Build specified mixed source/assembly target only' | |
1224 | @echo ' (requires a recent binutils and recent build (System.map))' | |
155ad605 | 1225 | @echo ' dir/file.ko - Build module including final link' |
c4d5ee67 | 1226 | @echo ' modules_prepare - Set up for building external modules' |
1da177e4 LT |
1227 | @echo ' tags/TAGS - Generate tags file for editors' |
1228 | @echo ' cscope - Generate cscope index' | |
f4ed1009 | 1229 | @echo ' gtags - Generate GNU GLOBAL index' |
6d128842 | 1230 | @echo ' kernelrelease - Output the release version string' |
cb58455c | 1231 | @echo ' kernelversion - Output the version stored in Makefile' |
2fb9b1bd | 1232 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
59df3230 | 1233 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
2fb9b1bd | 1234 | echo '' |
1da177e4 | 1235 | @echo 'Static analysers' |
1da177e4 LT |
1236 | @echo ' checkstack - Generate a list of stack hogs' |
1237 | @echo ' namespacecheck - Name space analysis on compiled kernel' | |
aa025e7d | 1238 | @echo ' versioncheck - Sanity check on version.h usage' |
ec2d987f | 1239 | @echo ' includecheck - Check for duplicate included header files' |
295ac051 | 1240 | @echo ' export_report - List the usages of all exported symbols' |
179efcb4 | 1241 | @echo ' headers_check - Sanity check on exported headers' |
74425eee NP |
1242 | @echo ' headerdep - Detect inclusion cycles in headers' |
1243 | @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help | |
1244 | @echo '' | |
1da177e4 | 1245 | @echo 'Kernel packaging:' |
6c2133e1 | 1246 | @$(MAKE) $(build)=$(package-dir) help |
1da177e4 LT |
1247 | @echo '' |
1248 | @echo 'Documentation targets:' | |
1249 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp | |
1250 | @echo '' | |
01dee188 | 1251 | @echo 'Architecture specific targets ($(SRCARCH)):' |
1da177e4 | 1252 | @$(if $(archhelp),$(archhelp),\ |
01dee188 | 1253 | echo ' No architecture specific help defined for $(SRCARCH)') |
1da177e4 LT |
1254 | @echo '' |
1255 | @$(if $(boards), \ | |
1256 | $(foreach b, $(boards), \ | |
1257 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ | |
1258 | echo '') | |
5dffbe81 SB |
1259 | @$(if $(board-dirs), \ |
1260 | $(foreach b, $(board-dirs), \ | |
1261 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ | |
1262 | printf " %-16s - Show all of the above\\n" help-boards; \ | |
1263 | echo '') | |
1da177e4 LT |
1264 | |
1265 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' | |
45d506bd | 1266 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4 | 1267 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
701842e3 DK |
1268 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
1269 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' | |
4a5838ad | 1270 | @echo ' make W=1 [targets] Enable extra gcc checks' |
1da177e4 LT |
1271 | @echo '' |
1272 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' | |
1273 | @echo 'For further info see the ./README file' | |
1274 | ||
1275 | ||
5dffbe81 SB |
1276 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
1277 | ||
1278 | help-boards: $(help-board-dirs) | |
1279 | ||
1280 | boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) | |
1281 | ||
1282 | $(help-board-dirs): help-%: | |
1283 | @echo 'Architecture specific targets ($(SRCARCH) $*):' | |
1284 | @$(if $(boards-per-dir), \ | |
1285 | $(foreach b, $(boards-per-dir), \ | |
1286 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ | |
1287 | echo '') | |
1288 | ||
1289 | ||
1da177e4 LT |
1290 | # Documentation targets |
1291 | # --------------------------------------------------------------------------- | |
1292 | %docs: scripts_basic FORCE | |
1293 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ | |
1294 | ||
1295 | else # KBUILD_EXTMOD | |
1296 | ||
1297 | ### | |
1298 | # External module support. | |
1299 | # When building external modules the kernel used as basis is considered | |
1300 | # read-only, and no consistency checks are made and the make | |
1301 | # system is not used on the basis kernel. If updates are required | |
1302 | # in the basis kernel ordinary make commands (without M=...) must | |
1303 | # be used. | |
1304 | # | |
1305 | # The following are the only valid targets when building external | |
1306 | # modules. | |
1307 | # make M=dir clean Delete all automatically generated files | |
1308 | # make M=dir modules Make all modules in specified dir | |
1309 | # make M=dir Same as 'make M=dir modules' | |
1310 | # make M=dir modules_install | |
070b98bf | 1311 | # Install the modules built in the module directory |
1da177e4 LT |
1312 | # Assumes install directory is already created |
1313 | ||
1314 | # We are always building modules | |
1315 | KBUILD_MODULES := 1 | |
4f193362 | 1316 | PHONY += crmodverdir |
1da177e4 | 1317 | crmodverdir: |
7bb9d092 | 1318 | $(cmd_crmodverdir) |
1da177e4 | 1319 | |
4f193362 | 1320 | PHONY += $(objtree)/Module.symvers |
1da177e4 LT |
1321 | $(objtree)/Module.symvers: |
1322 | @test -e $(objtree)/Module.symvers || ( \ | |
1323 | echo; \ | |
1324 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ | |
1325 | echo " is missing; modules will have no dependencies and modversions."; \ | |
1326 | echo ) | |
1327 | ||
1328 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) | |
4f193362 | 1329 | PHONY += $(module-dirs) modules |
1da177e4 LT |
1330 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1331 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) | |
1332 | ||
1333 | modules: $(module-dirs) | |
fd54f502 | 1334 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1335 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4 | 1336 | |
4f193362 | 1337 | PHONY += modules_install |
a67dc21a | 1338 | modules_install: _emodinst_ _emodinst_post |
e6304663 | 1339 | |
4f193362 PS |
1340 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1341 | PHONY += _emodinst_ | |
a67dc21a | 1342 | _emodinst_: |
a67dc21a | 1343 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e | 1344 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1345 | |
4f193362 | 1346 | PHONY += _emodinst_post |
a67dc21a SR |
1347 | _emodinst_post: _emodinst_ |
1348 | $(call cmd,depmod) | |
1349 | ||
1da177e4 LT |
1350 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1351 | ||
4f193362 | 1352 | PHONY += $(clean-dirs) clean |
1da177e4 LT |
1353 | $(clean-dirs): |
1354 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1355 | ||
1356 | clean: rm-dirs := $(MODVERDIR) | |
88d7be03 | 1357 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
1da177e4 LT |
1358 | |
1359 | help: | |
1360 | @echo ' Building external modules.' | |
1361 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' | |
1362 | @echo '' | |
1363 | @echo ' modules - default target, build the module(s)' | |
1364 | @echo ' modules_install - install the module' | |
1365 | @echo ' clean - remove generated files in module directory only' | |
1366 | @echo '' | |
06300b21 SR |
1367 | |
1368 | # Dummies... | |
4f193362 | 1369 | PHONY += prepare scripts |
06300b21 SR |
1370 | prepare: ; |
1371 | scripts: ; | |
1da177e4 LT |
1372 | endif # KBUILD_EXTMOD |
1373 | ||
88d7be03 MM |
1374 | clean: $(clean-dirs) |
1375 | $(call cmd,rmdirs) | |
1376 | $(call cmd,rmfiles) | |
1377 | @find $(or $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ | |
1378 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ | |
1379 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ | |
1380 | -o -name '*.symtypes' -o -name 'modules.order' \ | |
1381 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ | |
1382 | -o -name '*.gcno' \) -type f -print | xargs rm -f | |
1383 | ||
1da177e4 LT |
1384 | # Generate tags for editors |
1385 | # --------------------------------------------------------------------------- | |
a680eedc SR |
1386 | quiet_cmd_tags = GEN $@ |
1387 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ | |
1da177e4 | 1388 | |
f4ed1009 | 1389 | tags TAGS cscope gtags: FORCE |
1da177e4 LT |
1390 | $(call cmd,tags) |
1391 | ||
1da177e4 LT |
1392 | # Scripts to check various things for consistency |
1393 | # --------------------------------------------------------------------------- | |
1394 | ||
1da177e4 LT |
1395 | includecheck: |
1396 | find * $(RCS_FIND_IGNORE) \ | |
1397 | -name '*.[hcS]' -type f -print | sort \ | |
80007434 | 1398 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1da177e4 LT |
1399 | |
1400 | versioncheck: | |
1401 | find * $(RCS_FIND_IGNORE) \ | |
1402 | -name '*.[hcS]' -type f -print | sort \ | |
80007434 | 1403 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1da177e4 | 1404 | |
74425eee NP |
1405 | coccicheck: |
1406 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ | |
1407 | ||
1da177e4 LT |
1408 | namespacecheck: |
1409 | $(PERL) $(srctree)/scripts/namespace.pl | |
1410 | ||
295ac051 AB |
1411 | export_report: |
1412 | $(PERL) $(srctree)/scripts/export_report.pl | |
1413 | ||
1da177e4 LT |
1414 | endif #ifeq ($(config-targets),1) |
1415 | endif #ifeq ($(mixed-targets),1) | |
1416 | ||
c30a02e0 | 1417 | PHONY += checkstack kernelrelease kernelversion |
e3ccf6e3 | 1418 | |
011e3a9a JD |
1419 | # UML needs a little special treatment here. It wants to use the host |
1420 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone | |
1421 | # else wants $(ARCH), including people doing cross-builds, which means | |
1422 | # that $(SUBARCH) doesn't work here. | |
1423 | ifeq ($(ARCH), um) | |
1424 | CHECKSTACK_ARCH := $(SUBARCH) | |
1425 | else | |
1426 | CHECKSTACK_ARCH := $(ARCH) | |
1427 | endif | |
1da177e4 LT |
1428 | checkstack: |
1429 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ | |
011e3a9a | 1430 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1da177e4 | 1431 | |
7b8ea53d AW |
1432 | kernelrelease: |
1433 | @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" | |
01ab1788 | 1434 | |
cb58455c | 1435 | kernelversion: |
2244cbd8 | 1436 | @echo $(KERNELVERSION) |
1da177e4 | 1437 | |
06300b21 SR |
1438 | # Single targets |
1439 | # --------------------------------------------------------------------------- | |
bc2546a6 | 1440 | # Single targets are compatible with: |
e1b8513d | 1441 | # - build with mixed source and output |
bc2546a6 SR |
1442 | # - build with separate output dir 'make O=...' |
1443 | # - external modules | |
1444 | # | |
1445 | # target-dir => where to store outputfile | |
1446 | # build-dir => directory in kernel source tree to use | |
1447 | ||
1448 | ifeq ($(KBUILD_EXTMOD),) | |
aa360879 | 1449 | build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a6 SR |
1450 | target-dir = $(dir $@) |
1451 | else | |
1452 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) | |
1453 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) | |
1454 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) | |
1455 | endif | |
1456 | ||
f6ecebd6 | 1457 | %.s: %.c prepare scripts FORCE |
bc2546a6 | 1458 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1459 | %.i: %.c prepare scripts FORCE |
bc2546a6 | 1460 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1461 | %.o: %.c prepare scripts FORCE |
bc2546a6 | 1462 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1463 | %.lst: %.c prepare scripts FORCE |
bc2546a6 | 1464 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1465 | %.s: %.S prepare scripts FORCE |
bc2546a6 | 1466 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1467 | %.o: %.S prepare scripts FORCE |
bc2546a6 | 1468 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde675 AG |
1469 | %.symtypes: %.c prepare scripts FORCE |
1470 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | |
06300b21 | 1471 | |
bc2546a6 | 1472 | # Modules |
31110ebb SR |
1473 | /: prepare scripts FORCE |
1474 | $(cmd_crmodverdir) | |
1475 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ | |
1476 | $(build)=$(build-dir) | |
1477 | %/: prepare scripts FORCE | |
7bb9d092 | 1478 | $(cmd_crmodverdir) |
06300b21 | 1479 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 SR |
1480 | $(build)=$(build-dir) |
1481 | %.ko: prepare scripts FORCE | |
7bb9d092 | 1482 | $(cmd_crmodverdir) |
06300b21 | 1483 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 | 1484 | $(build)=$(build-dir) $(@:.ko=.o) |
b805aa0e | 1485 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21 | 1486 | |
1da177e4 LT |
1487 | # FIXME Should go into a make.lib or something |
1488 | # =========================================================================== | |
1489 | ||
1490 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) | |
1491 | cmd_rmdirs = rm -rf $(rm-dirs) | |
1492 | ||
1493 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) | |
1494 | cmd_rmfiles = rm -f $(rm-files) | |
1495 | ||
bc3c26fe | 1496 | # Run depmod only if we have System.map and depmod is executable |
50a8ec31 SR |
1497 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
1498 | cmd_depmod = \ | |
d8d2e78a | 1499 | if [ -r System.map -a -x $(DEPMOD) ]; then \ |
50a8ec31 | 1500 | $(DEPMOD) -ae -F System.map \ |
75bccd88 | 1501 | $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) ) \ |
50a8ec31 SR |
1502 | $(KERNELRELEASE); \ |
1503 | fi | |
1504 | ||
7bb9d092 | 1505 | # Create temporary dir for module support files |
ab19f879 SR |
1506 | # clean it up only when building all modules |
1507 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ | |
1508 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) | |
1da177e4 | 1509 | |
222d394d | 1510 | a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ |
80c00ba9 | 1511 | $(KBUILD_AFLAGS_KERNEL) \ |
d8672b40 | 1512 | $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \ |
5e8d780d | 1513 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) |
1da177e4 LT |
1514 | |
1515 | quiet_cmd_as_o_S = AS $@ | |
1516 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< | |
1517 | ||
1518 | # read all saved command lines | |
1519 | ||
1520 | targets := $(wildcard $(sort $(targets))) | |
1521 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | |
1522 | ||
1523 | ifneq ($(cmd_files),) | |
1524 | $(cmd_files): ; # Do not try to update included dependency files | |
1525 | include $(cmd_files) | |
1526 | endif | |
1527 | ||
1da177e4 LT |
1528 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
1529 | # Usage: | |
1530 | # $(Q)$(MAKE) $(clean)=dir | |
1531 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj | |
1532 | ||
1da177e4 LT |
1533 | endif # skip-makefile |
1534 | ||
4f193362 | 1535 | PHONY += FORCE |
1da177e4 | 1536 | FORCE: |
4f193362 | 1537 | |
4f193362 | 1538 | # Declare the contents of the .PHONY variable as phony. We keep that |
fe8d0a41 | 1539 | # information in a variable so we can use it in if_changed and friends. |
4f193362 | 1540 | .PHONY: $(PHONY) |