Commit | Line | Data |
---|---|---|
c517d838 | 1 | VERSION = 4 |
29b4817d | 2 | PATCHLEVEL = 8 |
55922c9d | 3 | SUBLEVEL = 0 |
c8d2bc9b | 4 | EXTRAVERSION = |
1a695a90 | 5 | NAME = Psychotic Stoned Sheep |
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 | ||
a436bb7b MY |
13 | # o Do not use make's built-in rules and variables |
14 | # (this increases performance and avoids hard-to-debug behaviour); | |
15 | # o Look for make include files relative to root of kernel src | |
16 | MAKEFLAGS += -rR --include-dir=$(CURDIR) | |
1da177e4 | 17 | |
c051346b | 18 | # Avoid funny character set dependencies |
06b5dc64 | 19 | unexport LC_ALL |
c051346b PA |
20 | LC_COLLATE=C |
21 | LC_NUMERIC=C | |
07105202 | 22 | export LC_COLLATE LC_NUMERIC |
c051346b | 23 | |
ab7474ea BP |
24 | # Avoid interference with shell env settings |
25 | unexport GREP_OPTIONS | |
26 | ||
1da177e4 LT |
27 | # We are using a recursive build, so we need to do a little thinking |
28 | # to get the ordering right. | |
29 | # | |
30 | # Most importantly: sub-Makefiles should only ever modify files in | |
31 | # their own directory. If in some directory we have a dependency on | |
32 | # a file in another dir (which doesn't happen often, but it's often | |
33 | # unavoidable when linking the built-in.o targets which finally | |
34 | # turn into vmlinux), we will call a sub make in that other dir, and | |
35 | # after that we are sure that everything which is in that other dir | |
36 | # is now up to date. | |
37 | # | |
38 | # The only cases where we need to modify files which have global | |
39 | # effects are thus separated out and done before the recursive | |
40 | # descending is started. They are now explicitly listed as the | |
41 | # prepare rule. | |
42 | ||
066b7ed9 MM |
43 | # Beautify output |
44 | # --------------------------------------------------------------------------- | |
45 | # | |
46 | # Normally, we echo the whole command before executing it. By making | |
47 | # that echo $($(quiet)$(cmd)), we now have the possibility to set | |
48 | # $(quiet) to choose other forms of output instead, e.g. | |
49 | # | |
50 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ | |
51 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | |
52 | # | |
53 | # If $(quiet) is empty, the whole command will be printed. | |
54 | # If it is set to "quiet_", only the short version will be printed. | |
55 | # If it is set to "silent_", nothing will be printed at all, since | |
56 | # the variable $(silent_cmd_cc_o_c) doesn't exist. | |
57 | # | |
58 | # A simple variant is to prefix commands with $(Q) - that's useful | |
59 | # for commands that shall be hidden in non-verbose mode. | |
60 | # | |
61 | # $(Q)ln $@ :< | |
62 | # | |
63 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. | |
64 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. | |
65 | # | |
1da177e4 LT |
66 | # To put more focus on warnings, be less verbose as default |
67 | # Use 'make V=1' to see the full commands | |
68 | ||
b8b0618c CR |
69 | ifeq ("$(origin V)", "command line") |
70 | KBUILD_VERBOSE = $(V) | |
1da177e4 LT |
71 | endif |
72 | ifndef KBUILD_VERBOSE | |
73 | KBUILD_VERBOSE = 0 | |
74 | endif | |
75 | ||
066b7ed9 MM |
76 | ifeq ($(KBUILD_VERBOSE),1) |
77 | quiet = | |
78 | Q = | |
79 | else | |
80 | quiet=quiet_ | |
81 | Q = @ | |
82 | endif | |
83 | ||
84 | # If the user is running make -s (silent mode), suppress echoing of | |
85 | # commands | |
86 | ||
87 | ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 | |
88 | ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) | |
89 | quiet=silent_ | |
90 | endif | |
91 | else # make-3.8x | |
92 | ifneq ($(filter s% -s%,$(MAKEFLAGS)),) | |
93 | quiet=silent_ | |
94 | endif | |
95 | endif | |
96 | ||
97 | export quiet Q KBUILD_VERBOSE | |
98 | ||
1da177e4 LT |
99 | # kbuild supports saving output files in a separate directory. |
100 | # To locate output files in a separate directory two syntaxes are supported. | |
101 | # In both cases the working directory must be the root of the kernel src. | |
102 | # 1) O= | |
103 | # Use "make O=dir/to/store/output/files/" | |
070b98bf | 104 | # |
1da177e4 LT |
105 | # 2) Set KBUILD_OUTPUT |
106 | # Set the environment variable KBUILD_OUTPUT to point to the directory | |
107 | # where the output files shall be placed. | |
108 | # export KBUILD_OUTPUT=dir/to/store/output/files/ | |
109 | # make | |
110 | # | |
111 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment | |
112 | # variable. | |
113 | ||
1da177e4 LT |
114 | # KBUILD_SRC is set on invocation of make in OBJ directory |
115 | # KBUILD_SRC is not intended to be used by the regular user (for now) | |
116 | ifeq ($(KBUILD_SRC),) | |
117 | ||
118 | # OK, Make called in directory where kernel src resides | |
119 | # Do we want to locate output files in a separate directory? | |
b8b0618c CR |
120 | ifeq ("$(origin O)", "command line") |
121 | KBUILD_OUTPUT := $(O) | |
1da177e4 LT |
122 | endif |
123 | ||
124 | # That's our default target when none is given on the command line | |
4f193362 | 125 | PHONY := _all |
1da177e4 LT |
126 | _all: |
127 | ||
1cacc9ab SR |
128 | # Cancel implicit rules on top Makefile |
129 | $(CURDIR)/Makefile Makefile: ; | |
130 | ||
51193b76 RJ |
131 | ifneq ($(words $(subst :, ,$(CURDIR))), 1) |
132 | $(error main directory cannot contain spaces nor colons) | |
133 | endif | |
134 | ||
1da177e4 LT |
135 | ifneq ($(KBUILD_OUTPUT),) |
136 | # Invoke a second make in the output directory, passing relevant variables | |
137 | # check that the output directory actually exists | |
138 | saved-output := $(KBUILD_OUTPUT) | |
1c9e70a5 MY |
139 | KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ |
140 | && /bin/pwd) | |
1da177e4 | 141 | $(if $(KBUILD_OUTPUT),, \ |
1c9e70a5 | 142 | $(error failed to create output directory "$(saved-output)")) |
1da177e4 | 143 | |
0b35786d MM |
144 | PHONY += $(MAKECMDGOALS) sub-make |
145 | ||
1cacc9ab | 146 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
16f89098 | 147 | @: |
0b35786d | 148 | |
2e8d696b | 149 | sub-make: |
745a2543 | 150 | $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ |
aa55c8e2 | 151 | -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) |
1da177e4 LT |
152 | |
153 | # Leave processing to above invocation of make | |
154 | skip-makefile := 1 | |
155 | endif # ifneq ($(KBUILD_OUTPUT),) | |
156 | endif # ifeq ($(KBUILD_SRC),) | |
157 | ||
158 | # We process the rest of the Makefile if this is the final invocation of make | |
159 | ifeq ($(skip-makefile),) | |
160 | ||
7ff52571 MY |
161 | # Do not print "Entering directory ...", |
162 | # but we want to display it when entering to the output directory | |
163 | # so that IDEs/editors are able to understand relative filenames. | |
164 | MAKEFLAGS += --no-print-directory | |
165 | ||
aa55c8e2 MY |
166 | # Call a source code checker (by default, "sparse") as part of the |
167 | # C compilation. | |
168 | # | |
169 | # Use 'make C=1' to enable checking of only re-compiled files. | |
170 | # Use 'make C=2' to enable checking of *all* source files, regardless | |
171 | # of whether they are re-compiled or not. | |
172 | # | |
173 | # See the file "Documentation/sparse.txt" for more details, including | |
174 | # where to get the "sparse" utility. | |
175 | ||
176 | ifeq ("$(origin C)", "command line") | |
177 | KBUILD_CHECKSRC = $(C) | |
178 | endif | |
179 | ifndef KBUILD_CHECKSRC | |
180 | KBUILD_CHECKSRC = 0 | |
181 | endif | |
182 | ||
183 | # Use make M=dir to specify directory of external module to build | |
184 | # Old syntax make ... SUBDIRS=$PWD is still supported | |
185 | # Setting the environment variable KBUILD_EXTMOD take precedence | |
186 | ifdef SUBDIRS | |
187 | KBUILD_EXTMOD ?= $(SUBDIRS) | |
188 | endif | |
189 | ||
190 | ifeq ("$(origin M)", "command line") | |
191 | KBUILD_EXTMOD := $(M) | |
192 | endif | |
193 | ||
1da177e4 LT |
194 | # If building an external module we do not care about the all: rule |
195 | # but instead _all depend on modules | |
4f193362 | 196 | PHONY += all |
1da177e4 LT |
197 | ifeq ($(KBUILD_EXTMOD),) |
198 | _all: all | |
199 | else | |
200 | _all: modules | |
201 | endif | |
202 | ||
9da0763b MM |
203 | ifeq ($(KBUILD_SRC),) |
204 | # building in the source tree | |
205 | srctree := . | |
206 | else | |
207 | ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) | |
208 | # building in a subdirectory of the source tree | |
209 | srctree := .. | |
210 | else | |
211 | srctree := $(KBUILD_SRC) | |
212 | endif | |
213 | endif | |
7e1c0477 | 214 | objtree := . |
1da177e4 LT |
215 | src := $(srctree) |
216 | obj := $(objtree) | |
217 | ||
0f558c33 | 218 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
1da177e4 | 219 | |
11294235 | 220 | export srctree objtree VPATH |
1da177e4 | 221 | |
1da177e4 LT |
222 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
223 | # first, and if a usermode build is happening, the "ARCH=um" on the command | |
224 | # line overrides the setting of ARCH below. If a native build is happening, | |
38385f8f | 225 | # then ARCH is assigned, getting whatever value it gets normally, and |
1da177e4 LT |
226 | # SUBARCH is subsequently ignored. |
227 | ||
ffee0de4 DW |
228 | SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ |
229 | -e s/sun4u/sparc64/ \ | |
1da177e4 | 230 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
39990b5e | 231 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
236b1957 | 232 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
f1b99392 | 233 | -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) |
1da177e4 LT |
234 | |
235 | # Cross compiling and selecting different set of gcc/bin-utils | |
236 | # --------------------------------------------------------------------------- | |
237 | # | |
238 | # When performing cross compilation for other architectures ARCH shall be set | |
239 | # to the target architecture. (See arch/* for the possibilities). | |
240 | # ARCH can be set during invocation of make: | |
241 | # make ARCH=ia64 | |
242 | # Another way is to have ARCH set in the environment. | |
243 | # The default ARCH is the host where make is executed. | |
244 | ||
245 | # CROSS_COMPILE specify the prefix used for all executables used | |
246 | # during compilation. Only gcc and related bin-utils executables | |
247 | # are prefixed with $(CROSS_COMPILE). | |
248 | # CROSS_COMPILE can be set on the command line | |
249 | # make CROSS_COMPILE=ia64-linux- | |
250 | # Alternatively CROSS_COMPILE can be set in the environment. | |
84336466 RM |
251 | # A third alternative is to store a setting in .config so that plain |
252 | # "make" in the configured kernel build directory always uses that. | |
1da177e4 LT |
253 | # Default value for CROSS_COMPILE is not to prefix executables |
254 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile | |
2331d1a6 | 255 | ARCH ?= $(SUBARCH) |
84336466 | 256 | CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
1da177e4 LT |
257 | |
258 | # Architecture as present in compile.h | |
6752ed90 TG |
259 | UTS_MACHINE := $(ARCH) |
260 | SRCARCH := $(ARCH) | |
1da177e4 | 261 | |
d746d647 SR |
262 | # Additional ARCH settings for x86 |
263 | ifeq ($(ARCH),i386) | |
264 | SRCARCH := x86 | |
265 | endif | |
266 | ifeq ($(ARCH),x86_64) | |
267 | SRCARCH := x86 | |
268 | endif | |
74b469f2 | 269 | |
5e538790 | 270 | # Additional ARCH settings for sparc |
e69f58c0 NK |
271 | ifeq ($(ARCH),sparc32) |
272 | SRCARCH := sparc | |
273 | endif | |
a439fe51 | 274 | ifeq ($(ARCH),sparc64) |
5e538790 | 275 | SRCARCH := sparc |
a439fe51 | 276 | endif |
2fb9b1bd | 277 | |
3cc000b5 PM |
278 | # Additional ARCH settings for sh |
279 | ifeq ($(ARCH),sh64) | |
280 | SRCARCH := sh | |
281 | endif | |
282 | ||
18aecc2b | 283 | # Additional ARCH settings for tile |
6738d321 CM |
284 | ifeq ($(ARCH),tilepro) |
285 | SRCARCH := tile | |
286 | endif | |
18aecc2b CM |
287 | ifeq ($(ARCH),tilegx) |
288 | SRCARCH := tile | |
289 | endif | |
290 | ||
5e538790 SR |
291 | # Where to locate arch specific headers |
292 | hdr-arch := $(SRCARCH) | |
293 | ||
14cdd3c4 | 294 | KCONFIG_CONFIG ?= .config |
41263fc6 | 295 | export KCONFIG_CONFIG |
14cdd3c4 | 296 | |
1da177e4 LT |
297 | # SHELL used by kbuild |
298 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
299 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
300 | else echo sh; fi ; fi) | |
301 | ||
070b98bf SR |
302 | HOSTCC = gcc |
303 | HOSTCXX = g++ | |
51b97e35 | 304 | HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 |
070b98bf | 305 | HOSTCXXFLAGS = -O2 |
1da177e4 | 306 | |
61163efa BW |
307 | ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) |
308 | HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ | |
309 | -Wno-missing-field-initializers -fno-delete-null-pointer-checks | |
310 | endif | |
311 | ||
070b98bf SR |
312 | # Decide whether to build built-in, modular, or both. |
313 | # Normally, just do built-in. | |
1da177e4 LT |
314 | |
315 | KBUILD_MODULES := | |
316 | KBUILD_BUILTIN := 1 | |
317 | ||
3fbb43df MY |
318 | # If we have only "make modules", don't compile built-in objects. |
319 | # When we're building modules with modversions, we need to consider | |
320 | # the built-in objects during the descend as well, in order to | |
321 | # make sure the checksums are up to date before we record them. | |
1da177e4 LT |
322 | |
323 | ifeq ($(MAKECMDGOALS),modules) | |
324 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) | |
325 | endif | |
326 | ||
3fbb43df MY |
327 | # If we have "make <whatever> modules", compile modules |
328 | # in addition to whatever we do anyway. | |
329 | # Just "make" or "make all" shall build modules as well | |
1da177e4 LT |
330 | |
331 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) | |
332 | KBUILD_MODULES := 1 | |
333 | endif | |
334 | ||
335 | ifeq ($(MAKECMDGOALS),) | |
336 | KBUILD_MODULES := 1 | |
337 | endif | |
338 | ||
e579d351 | 339 | export KBUILD_MODULES KBUILD_BUILTIN |
1da177e4 LT |
340 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
341 | ||
1cacc9ab | 342 | # We need some generic definitions (do not try to remake the file). |
a436bb7b MY |
343 | scripts/Kbuild.include: ; |
344 | include scripts/Kbuild.include | |
1da177e4 LT |
345 | |
346 | # Make variables (CC, etc...) | |
1da177e4 LT |
347 | AS = $(CROSS_COMPILE)as |
348 | LD = $(CROSS_COMPILE)ld | |
349 | CC = $(CROSS_COMPILE)gcc | |
350 | CPP = $(CC) -E | |
351 | AR = $(CROSS_COMPILE)ar | |
352 | NM = $(CROSS_COMPILE)nm | |
353 | STRIP = $(CROSS_COMPILE)strip | |
354 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
355 | OBJDUMP = $(CROSS_COMPILE)objdump | |
356 | AWK = awk | |
357 | GENKSYMS = scripts/genksyms/genksyms | |
caa27b66 | 358 | INSTALLKERNEL := installkernel |
1da177e4 | 359 | DEPMOD = /sbin/depmod |
1da177e4 | 360 | PERL = perl |
011bf125 | 361 | PYTHON = python |
1da177e4 LT |
362 | CHECK = sparse |
363 | ||
80a7d1d9 HE |
364 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
365 | -Wbitwise -Wno-return-void $(CF) | |
b36fad65 | 366 | NOSTDINC_FLAGS = |
6588169d SR |
367 | CFLAGS_MODULE = |
368 | AFLAGS_MODULE = | |
369 | LDFLAGS_MODULE = | |
1da177e4 LT |
370 | CFLAGS_KERNEL = |
371 | AFLAGS_KERNEL = | |
b36fad65 | 372 | LDFLAGS_vmlinux = |
6e8d666e | 373 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage -fno-tree-loop-im |
543c37cb | 374 | CFLAGS_KCOV := $(call cc-option,-fsanitize-coverage=trace-pc,) |
1da177e4 LT |
375 | |
376 | ||
abbf1590 DH |
377 | # Use USERINCLUDE when you must reference the UAPI directories only. |
378 | USERINCLUDE := \ | |
379 | -I$(srctree)/arch/$(hdr-arch)/include/uapi \ | |
3308b285 | 380 | -I$(objtree)/arch/$(hdr-arch)/include/generated/uapi \ |
abbf1590 | 381 | -I$(srctree)/include/uapi \ |
3308b285 | 382 | -I$(objtree)/include/generated/uapi \ |
abbf1590 DH |
383 | -include $(srctree)/include/linux/kconfig.h |
384 | ||
1da177e4 LT |
385 | # Use LINUXINCLUDE when you must reference the include/ directory. |
386 | # Needed to be compatible with the O= option | |
abbf1590 DH |
387 | LINUXINCLUDE := \ |
388 | -I$(srctree)/arch/$(hdr-arch)/include \ | |
3308b285 AB |
389 | -I$(objtree)/arch/$(hdr-arch)/include/generated/uapi \ |
390 | -I$(objtree)/arch/$(hdr-arch)/include/generated \ | |
abbf1590 | 391 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ |
3308b285 | 392 | -I$(objtree)/include |
dc33db7c AB |
393 | |
394 | LINUXINCLUDE += $(filter-out $(LINUXINCLUDE),$(USERINCLUDE)) | |
1da177e4 | 395 | |
d8672b40 | 396 | KBUILD_CPPFLAGS := -D__KERNEL__ |
1da177e4 | 397 | |
a0f97e06 | 398 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
94bed2a9 | 399 | -fno-strict-aliasing -fno-common \ |
a8735821 | 400 | -Werror-implicit-function-declaration \ |
51b97e35 KS |
401 | -Wno-format-security \ |
402 | -std=gnu89 | |
a1c48bb1 | 403 | |
80c00ba9 SR |
404 | KBUILD_AFLAGS_KERNEL := |
405 | KBUILD_CFLAGS_KERNEL := | |
222d394d | 406 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
6588169d SR |
407 | KBUILD_AFLAGS_MODULE := -DMODULE |
408 | KBUILD_CFLAGS_MODULE := -DMODULE | |
409 | KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds | |
1da177e4 | 410 | |
f1d28fb0 RZ |
411 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
412 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) | |
cacd54ef | 413 | KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) |
cb58455c | 414 | |
070b98bf | 415 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
80ef88d6 | 416 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
caa27b66 | 417 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
011bf125 | 418 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE |
070b98bf | 419 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
1da177e4 | 420 | |
06c5040c | 421 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
5c9a8750 | 422 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KCOV CFLAGS_KASAN CFLAGS_UBSAN |
222d394d | 423 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
6588169d | 424 | export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
80c00ba9 | 425 | export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
40df759e | 426 | export KBUILD_ARFLAGS |
1da177e4 LT |
427 | |
428 | # When compiling out-of-tree modules, put MODVERDIR in the module | |
429 | # tree rather than in the kernel tree. The kernel tree might | |
430 | # even be read-only. | |
431 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions | |
432 | ||
1da177e4 LT |
433 | # Files to ignore in find ... statements |
434 | ||
ae63b2d7 PB |
435 | export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ |
436 | -name CVS -o -name .pc -o -name .hg -o -name .git \) \ | |
437 | -prune -o | |
450c6076 JJ |
438 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ |
439 | --exclude CVS --exclude .pc --exclude .hg --exclude .git | |
1da177e4 LT |
440 | |
441 | # =========================================================================== | |
442 | # Rules shared between *config targets and build targets | |
443 | ||
444 | # Basic helpers built in scripts/ | |
4f193362 | 445 | PHONY += scripts_basic |
1da177e4 LT |
446 | scripts_basic: |
447 | $(Q)$(MAKE) $(build)=scripts/basic | |
638adb05 | 448 | $(Q)rm -f .tmp_quiet_recordmcount |
1da177e4 | 449 | |
cd05e6bd JB |
450 | # To avoid any implicit rule to kick in, define an empty command. |
451 | scripts/basic/%: scripts_basic ; | |
452 | ||
4f193362 | 453 | PHONY += outputmakefile |
fd5f0cd6 JB |
454 | # outputmakefile generates a Makefile in the output directory, if using a |
455 | # separate output directory. This allows convenient use of make in the | |
456 | # output directory. | |
1da177e4 | 457 | outputmakefile: |
fd5f0cd6 | 458 | ifneq ($(KBUILD_SRC),) |
92979997 | 459 | $(Q)ln -fsn $(srctree) source |
fd5f0cd6 JB |
460 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
461 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) | |
462 | endif | |
1da177e4 | 463 | |
d8ecc5cd SR |
464 | # Support for using generic headers in asm-generic |
465 | PHONY += asm-generic | |
466 | asm-generic: | |
467 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ | |
3c5994c8 CM |
468 | src=asm obj=arch/$(SRCARCH)/include/generated/asm |
469 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ | |
470 | src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm | |
d8ecc5cd | 471 | |
1da177e4 LT |
472 | # To make sure we do not include .config for any of the *config targets |
473 | # catch them early, and hand them over to scripts/kconfig/Makefile | |
474 | # It is allowed to specify more targets when calling make, including | |
475 | # mixing *config targets and build targets. | |
070b98bf | 476 | # For example 'make oldconfig all'. |
1da177e4 LT |
477 | # Detect when mixed targets is specified, and make a second invocation |
478 | # of make so .config is not included in this case either (for *config). | |
479 | ||
10b63956 | 480 | version_h := include/generated/uapi/linux/version.h |
223c24a7 | 481 | old_version_h := include/linux/version.h |
d183e6f5 | 482 | |
3eb3c740 | 483 | no-dot-config-targets := clean mrproper distclean \ |
fbae4d58 | 484 | cscope gtags TAGS tags help% %docs check% coccicheck \ |
d183e6f5 | 485 | $(version_h) headers_% archheaders archscripts \ |
4aed2fd8 | 486 | kernelversion %src-pkg |
1da177e4 LT |
487 | |
488 | config-targets := 0 | |
489 | mixed-targets := 0 | |
490 | dot-config := 1 | |
491 | ||
492 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
493 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
494 | dot-config := 0 | |
495 | endif | |
496 | endif | |
497 | ||
498 | ifeq ($(KBUILD_EXTMOD),) | |
499 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) | |
500 | config-targets := 1 | |
d0d38cd9 | 501 | ifneq ($(words $(MAKECMDGOALS)),1) |
1da177e4 LT |
502 | mixed-targets := 1 |
503 | endif | |
504 | endif | |
505 | endif | |
a85a41ed MM |
506 | # install and module_install need also be processed one by one |
507 | ifneq ($(filter install,$(MAKECMDGOALS)),) | |
508 | ifneq ($(filter modules_install,$(MAKECMDGOALS)),) | |
509 | mixed-targets := 1 | |
510 | endif | |
511 | endif | |
1da177e4 LT |
512 | |
513 | ifeq ($(mixed-targets),1) | |
514 | # =========================================================================== | |
515 | # We're called with mixed targets (*config and build targets). | |
516 | # Handle them one by one. | |
517 | ||
9319f453 MY |
518 | PHONY += $(MAKECMDGOALS) __build_one_by_one |
519 | ||
520 | $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one | |
521 | @: | |
522 | ||
523 | __build_one_by_one: | |
524 | $(Q)set -e; \ | |
525 | for i in $(MAKECMDGOALS); do \ | |
526 | $(MAKE) -f $(srctree)/Makefile $$i; \ | |
527 | done | |
1da177e4 LT |
528 | |
529 | else | |
530 | ifeq ($(config-targets),1) | |
531 | # =========================================================================== | |
532 | # *config targets only - make sure prerequisites are updated, and descend | |
533 | # in scripts/kconfig to make the *config target | |
534 | ||
535 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. | |
536 | # KBUILD_DEFCONFIG may point out an alternative default configuration | |
537 | # used for 'make defconfig' | |
a436bb7b | 538 | include arch/$(SRCARCH)/Makefile |
61bee204 | 539 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
1da177e4 | 540 | |
31110ebb | 541 | config: scripts_basic outputmakefile FORCE |
31110ebb SR |
542 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
543 | ||
544 | %config: scripts_basic outputmakefile FORCE | |
1da177e4 LT |
545 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
546 | ||
547 | else | |
548 | # =========================================================================== | |
549 | # Build targets only - this includes vmlinux, arch specific targets, clean | |
550 | # targets and others. In general all targets except *config targets. | |
551 | ||
552 | ifeq ($(KBUILD_EXTMOD),) | |
553 | # Additional helpers built in scripts/ | |
554 | # Carefully list dependencies so we do not try to build scripts twice | |
070b98bf | 555 | # in parallel |
4f193362 | 556 | PHONY += scripts |
a54292f5 | 557 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ |
6b90bd4b | 558 | asm-generic gcc-plugins |
1da177e4 LT |
559 | $(Q)$(MAKE) $(build)=$(@) |
560 | ||
1da177e4 LT |
561 | # Objects we will link into vmlinux / subdirs we need to visit |
562 | init-y := init/ | |
4d2acfbf | 563 | drivers-y := drivers/ sound/ firmware/ |
1da177e4 LT |
564 | net-y := net/ |
565 | libs-y := lib/ | |
566 | core-y := usr/ | |
37d9fe47 | 567 | virt-y := virt/ |
1da177e4 LT |
568 | endif # KBUILD_EXTMOD |
569 | ||
570 | ifeq ($(dot-config),1) | |
9ee4e336 SR |
571 | # Read in config |
572 | -include include/config/auto.conf | |
1da177e4 | 573 | |
9ee4e336 | 574 | ifeq ($(KBUILD_EXTMOD),) |
1da177e4 LT |
575 | # Read in dependencies to all Kconfig* files, make sure to run |
576 | # oldconfig if changes are detected. | |
c955ccaf | 577 | -include include/config/auto.conf.cmd |
1da177e4 | 578 | |
1da177e4 | 579 | # To avoid any implicit rule to kick in, define an empty command |
14cdd3c4 | 580 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
1da177e4 | 581 | |
c955ccaf | 582 | # If .config is newer than include/config/auto.conf, someone tinkered |
752625cf | 583 | # with it and forgot to run make oldconfig. |
070b98bf | 584 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
752625cf | 585 | # we execute the config step to be sure to catch updated Kconfig files |
bc081dd6 | 586 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
1da177e4 | 587 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
3041e47e | 588 | else |
264a2683 | 589 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
9ee4e336 SR |
590 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
591 | PHONY += include/config/auto.conf | |
592 | ||
593 | include/config/auto.conf: | |
264a2683 | 594 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
5369f550 MM |
595 | echo >&2; \ |
596 | echo >&2 " ERROR: Kernel configuration is invalid."; \ | |
597 | echo >&2 " include/generated/autoconf.h or $@ are missing.";\ | |
598 | echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ | |
599 | echo >&2 ; \ | |
9ee4e336 SR |
600 | /bin/false) |
601 | ||
602 | endif # KBUILD_EXTMOD | |
c955ccaf | 603 | |
1da177e4 LT |
604 | else |
605 | # Dummy target needed, because used as prerequisite | |
c955ccaf | 606 | include/config/auto.conf: ; |
9ee4e336 | 607 | endif # $(dot-config) |
1da177e4 LT |
608 | |
609 | # The all: target is the default when no target is given on the | |
610 | # command line. | |
611 | # This allow a user to issue only 'make' to build a kernel including modules | |
c8447161 | 612 | # Defaults to vmlinux, but the arch makefile usually adds further targets |
1da177e4 LT |
613 | all: vmlinux |
614 | ||
6dd3f13e MM |
615 | # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default |
616 | # values of the respective KBUILD_* variables | |
617 | ARCH_CPPFLAGS := | |
618 | ARCH_AFLAGS := | |
619 | ARCH_CFLAGS := | |
a436bb7b | 620 | include arch/$(SRCARCH)/Makefile |
a1c48bb1 GU |
621 | |
622 | KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) | |
6e8d666e | 623 | KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) |
ef6000b4 | 624 | KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) |
a1c48bb1 | 625 | |
1da177e4 | 626 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
6e8d666e | 627 | KBUILD_CFLAGS += -Os |
1da177e4 | 628 | else |
815eb71e | 629 | ifdef CONFIG_PROFILE_ALL_BRANCHES |
6e8d666e | 630 | KBUILD_CFLAGS += -O2 |
815eb71e AB |
631 | else |
632 | KBUILD_CFLAGS += -O2 | |
633 | endif | |
1da177e4 LT |
634 | endif |
635 | ||
69102311 JK |
636 | # Tell gcc to never replace conditional load with a non-conditional one |
637 | KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) | |
638 | ||
6b90bd4b ER |
639 | include scripts/Makefile.gcc-plugins |
640 | ||
1873e870 AK |
641 | ifdef CONFIG_READABLE_ASM |
642 | # Disable optimizations that make assembler listings hard to read. | |
643 | # reorder blocks reorders the control in the function | |
644 | # ipa clone creates specialized cloned functions | |
645 | # partial inlining inlines only parts of functions | |
646 | KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ | |
647 | $(call cc-option,-fno-ipa-cp-clone,) \ | |
648 | $(call cc-option,-fno-partial-inlining) | |
649 | endif | |
650 | ||
08f67461 | 651 | ifneq ($(CONFIG_FRAME_WARN),0) |
35bb5b1e AK |
652 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
653 | endif | |
654 | ||
c965b105 KC |
655 | # This selects the stack protector compiler flag. Testing it is delayed |
656 | # until after .config has been reprocessed, in the prepare-compiler-check | |
657 | # target. | |
8779657d | 658 | ifdef CONFIG_CC_STACKPROTECTOR_REGULAR |
19952a92 | 659 | stackp-flag := -fstack-protector |
c965b105 | 660 | stackp-name := REGULAR |
6c15b327 JB |
661 | else |
662 | ifdef CONFIG_CC_STACKPROTECTOR_STRONG | |
8779657d | 663 | stackp-flag := -fstack-protector-strong |
c965b105 | 664 | stackp-name := STRONG |
19952a92 KC |
665 | else |
666 | # Force off for distro compilers that enable stack protector by default. | |
667 | stackp-flag := $(call cc-option, -fno-stack-protector) | |
5d707e9c | 668 | endif |
6c15b327 | 669 | endif |
c965b105 KC |
670 | # Find arch-specific stack protector compiler sanity-checking script. |
671 | ifdef CONFIG_CC_STACKPROTECTOR | |
228d96c6 KC |
672 | stackp-path := $(srctree)/scripts/gcc-$(SRCARCH)_$(BITS)-has-stack-protector.sh |
673 | stackp-check := $(wildcard $(stackp-path)) | |
c965b105 | 674 | endif |
19952a92 | 675 | KBUILD_CFLAGS += $(stackp-flag) |
e06b8b98 | 676 | |
5631d9c4 | 677 | ifeq ($(cc-name),clang) |
61163efa BW |
678 | KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) |
679 | KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,) | |
680 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) | |
681 | KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) | |
682 | KBUILD_CFLAGS += $(call cc-disable-warning, gnu) | |
683 | # Quiet clang warning: comparison of unsigned expression < 0 is always false | |
684 | KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) | |
685 | # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the | |
686 | # source of a reference will be _MergedGlobals and not on of the whitelisted names. | |
687 | # See modpost pattern 2 | |
688 | KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) | |
26ea6bb1 | 689 | KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) |
61163efa BW |
690 | else |
691 | ||
c9c6837d AB |
692 | # These warnings generated too much noise in a regular build. |
693 | # Use make W=1 to enable them (see scripts/Makefile.build) | |
8417da6f | 694 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) |
c9c6837d | 695 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) |
61163efa | 696 | endif |
af0e5d56 | 697 | |
1da177e4 | 698 | ifdef CONFIG_FRAME_POINTER |
a0f97e06 | 699 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
1da177e4 | 700 | else |
7e9501fd RV |
701 | # Some targets (ARM with Thumb2, for example), can't be built with frame |
702 | # pointers. For those, we don't have FUNCTION_TRACER automatically | |
703 | # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is | |
704 | # incompatible with -fomit-frame-pointer with current GCC, so we don't use | |
705 | # -fomit-frame-pointer with FUNCTION_TRACER. | |
706 | ifndef CONFIG_FUNCTION_TRACER | |
a0f97e06 | 707 | KBUILD_CFLAGS += -fomit-frame-pointer |
1da177e4 | 708 | endif |
7e9501fd | 709 | endif |
1da177e4 | 710 | |
2062afb4 LT |
711 | KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) |
712 | ||
1da177e4 | 713 | ifdef CONFIG_DEBUG_INFO |
866ced95 AK |
714 | ifdef CONFIG_DEBUG_INFO_SPLIT |
715 | KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) | |
716 | else | |
a0f97e06 | 717 | KBUILD_CFLAGS += -g |
866ced95 | 718 | endif |
2288328c | 719 | KBUILD_AFLAGS += -Wa,-gdwarf-2 |
1da177e4 | 720 | endif |
bfaf2dd3 AK |
721 | ifdef CONFIG_DEBUG_INFO_DWARF4 |
722 | KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) | |
723 | endif | |
1da177e4 | 724 | |
d6f4ceb7 | 725 | ifdef CONFIG_DEBUG_INFO_REDUCED |
e82c4bb8 AK |
726 | KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ |
727 | $(call cc-option,-fno-var-tracking) | |
d6f4ceb7 AK |
728 | endif |
729 | ||
606576ce | 730 | ifdef CONFIG_FUNCTION_TRACER |
c0a80c0c HC |
731 | ifndef CC_FLAGS_FTRACE |
732 | CC_FLAGS_FTRACE := -pg | |
733 | endif | |
734 | export CC_FLAGS_FTRACE | |
a2546fae SR |
735 | ifdef CONFIG_HAVE_FENTRY |
736 | CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) | |
737 | endif | |
c0a80c0c | 738 | KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY) |
a2546fae | 739 | KBUILD_AFLAGS += $(CC_USING_FENTRY) |
72441cb1 | 740 | ifdef CONFIG_DYNAMIC_FTRACE |
cf4db259 | 741 | ifdef CONFIG_HAVE_C_RECORDMCOUNT |
72441cb1 SR |
742 | BUILD_C_RECORDMCOUNT := y |
743 | export BUILD_C_RECORDMCOUNT | |
744 | endif | |
745 | endif | |
16444a8a ACM |
746 | endif |
747 | ||
91341d4b SR |
748 | # We trigger additional mismatches with less inlining |
749 | ifdef CONFIG_DEBUG_SECTION_MISMATCH | |
750 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) | |
751 | endif | |
752 | ||
e8e69931 | 753 | # arch Makefile may override CC so keep this after arch Makefile is included |
e8f5bdb0 | 754 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
e8e69931 SR |
755 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
756 | ||
1da177e4 | 757 | # warn about C99 declaration after statement |
a0f97e06 | 758 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
1da177e4 | 759 | |
070b98bf | 760 | # disable pointer signed / unsigned warnings in gcc 4.0 |
8417da6f | 761 | KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
1da177e4 | 762 | |
fe8d0a41 | 763 | # disable invalid "can't wrap" optimizations for signed / pointers |
a137802e | 764 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
d0115552 | 765 | |
8f7f5c9f AK |
766 | # conserve stack if available |
767 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) | |
768 | ||
80970472 ST |
769 | # disallow errors like 'EXPORT_GPL(foo);' with missing header |
770 | KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) | |
771 | ||
772 | # require functions to have arguments in prototypes, not empty 'int foo()' | |
773 | KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) | |
774 | ||
fe7c36c7 JT |
775 | # Prohibit date/time macros, which would make the build non-deterministic |
776 | KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) | |
777 | ||
ea8daa7b DW |
778 | # enforce correct pointer usage |
779 | KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) | |
780 | ||
40df759e MM |
781 | # use the deterministic mode of AR if available |
782 | KBUILD_ARFLAGS := $(call ar-option,D) | |
783 | ||
bf5438fc JB |
784 | # check for 'asm goto' |
785 | ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) | |
786 | KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO | |
c0ccf6f9 | 787 | KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO |
bf5438fc JB |
788 | endif |
789 | ||
a436bb7b MY |
790 | include scripts/Makefile.kasan |
791 | include scripts/Makefile.extrawarn | |
c6d30853 | 792 | include scripts/Makefile.ubsan |
a86fe353 | 793 | |
61754c18 MM |
794 | # Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the |
795 | # last assignments | |
796 | KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) | |
797 | KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) | |
798 | KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) | |
52bcc330 | 799 | |
18991197 RM |
800 | # Use --build-id when available. |
801 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ | |
f86fd306 | 802 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
6588169d | 803 | KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
18991197 RM |
804 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
805 | ||
5d7d18f5 | 806 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
d79a2719 | 807 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
5d7d18f5 DH |
808 | endif |
809 | ||
1da177e4 | 810 | # Default kernel image to build when no specific target is given. |
070b98bf | 811 | # KBUILD_IMAGE may be overruled on the command line or |
1da177e4 LT |
812 | # set in the environment |
813 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over | |
814 | # this default value | |
815 | export KBUILD_IMAGE ?= vmlinux | |
816 | ||
817 | # | |
818 | # INSTALL_PATH specifies where to place the updated kernel and system map | |
819 | # images. Default is /boot, but you can set it to other values | |
820 | export INSTALL_PATH ?= /boot | |
821 | ||
f4d4ffc0 JC |
822 | # |
823 | # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. | |
824 | # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as | |
825 | # an argument if needed. Otherwise it defaults to the kernel install path | |
826 | # | |
827 | export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) | |
828 | ||
1da177e4 LT |
829 | # |
830 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory | |
831 | # relocations required by build roots. This is not defined in the | |
070b98bf | 832 | # makefile but the argument can be passed to make if needed. |
1da177e4 LT |
833 | # |
834 | ||
df9df036 | 835 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4 LT |
836 | export MODLIB |
837 | ||
ac031f26 | 838 | # |
3fbb43df MY |
839 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
840 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then | |
841 | # the default option --strip-debug will be used. Otherwise, | |
842 | # INSTALL_MOD_STRIP value will be used as the options to the strip command. | |
2ea03891 | 843 | |
ac031f26 TT |
844 | ifdef INSTALL_MOD_STRIP |
845 | ifeq ($(INSTALL_MOD_STRIP),1) | |
2ea03891 | 846 | mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26 | 847 | else |
2ea03891 | 848 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
ac031f26 TT |
849 | endif # INSTALL_MOD_STRIP=1 |
850 | else | |
2ea03891 | 851 | mod_strip_cmd = true |
ac031f26 TT |
852 | endif # INSTALL_MOD_STRIP |
853 | export mod_strip_cmd | |
854 | ||
beb50df3 BJ |
855 | # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed |
856 | # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP | |
857 | # or CONFIG_MODULE_COMPRESS_XZ. | |
858 | ||
859 | mod_compress_cmd = true | |
860 | ifdef CONFIG_MODULE_COMPRESS | |
861 | ifdef CONFIG_MODULE_COMPRESS_GZIP | |
3d1450d5 | 862 | mod_compress_cmd = gzip -n -f |
beb50df3 BJ |
863 | endif # CONFIG_MODULE_COMPRESS_GZIP |
864 | ifdef CONFIG_MODULE_COMPRESS_XZ | |
3d1450d5 | 865 | mod_compress_cmd = xz -f |
beb50df3 BJ |
866 | endif # CONFIG_MODULE_COMPRESS_XZ |
867 | endif # CONFIG_MODULE_COMPRESS | |
868 | export mod_compress_cmd | |
869 | ||
1bf49dd4 | 870 | # Select initial ramdisk compression format, default is gzip(1). |
871 | # This shall be used by the dracut(8) tool while creating an initramfs image. | |
872 | # | |
7ac18156 JB |
873 | INITRD_COMPRESS-y := gzip |
874 | INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 | |
875 | INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma | |
876 | INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz | |
877 | INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo | |
878 | INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 | |
b7000ade LT |
879 | # do not export INITRD_COMPRESS, since we didn't actually |
880 | # choose a sane default compression above. | |
881 | # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) | |
1da177e4 | 882 | |
d9d8d7ed | 883 | ifdef CONFIG_MODULE_SIG_ALL |
3ee550f1 DW |
884 | $(eval $(call config_filename,MODULE_SIG_KEY)) |
885 | ||
886 | mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 | |
e2a666d5 RR |
887 | else |
888 | mod_sign_cmd = true | |
889 | endif | |
890 | export mod_sign_cmd | |
891 | ||
892 | ||
1da177e4 | 893 | ifeq ($(KBUILD_EXTMOD),) |
cfc411e7 | 894 | core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4 LT |
895 | |
896 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ | |
897 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ | |
37d9fe47 | 898 | $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) |
1da177e4 LT |
899 | |
900 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ | |
37d9fe47 | 901 | $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-)))) |
1da177e4 LT |
902 | |
903 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) | |
904 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) | |
905 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) | |
906 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) | |
907 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) | |
908 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) | |
909 | libs-y := $(libs-y1) $(libs-y2) | |
37d9fe47 | 910 | virt-y := $(patsubst %/, %/built-in.o, $(virt-y)) |
1da177e4 | 911 | |
1f2bfbd0 | 912 | # Externally visible symbols (used by link-vmlinux.sh) |
95698570 | 913 | export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) |
37d9fe47 | 914 | export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) $(virt-y) |
95698570 | 915 | export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds |
1f2bfbd0 | 916 | export LDFLAGS_vmlinux |
6615d6c3 | 917 | # used by scripts/pacmage/Makefile |
37d9fe47 | 918 | export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools) |
9bb48247 | 919 | |
1f2bfbd0 | 920 | vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) |
1da177e4 | 921 | |
2441e78b NP |
922 | # Include targets which we want to execute sequentially if the rest of the |
923 | # kernel build went well. If CONFIG_TRIM_UNUSED_KSYMS is set, this might be | |
924 | # evaluated more than once. | |
925 | PHONY += vmlinux_prereq | |
926 | vmlinux_prereq: $(vmlinux-deps) FORCE | |
0f836e5f | 927 | ifdef CONFIG_HEADERS_CHECK |
0e7af8d0 | 928 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
267c4025 | 929 | endif |
3794f3e8 RD |
930 | ifdef CONFIG_BUILD_DOCSRC |
931 | $(Q)$(MAKE) $(build)=Documentation | |
3ee7b3fa JK |
932 | endif |
933 | ifdef CONFIG_GDB_SCRIPTS | |
934 | $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py | |
0f836e5f | 935 | endif |
2441e78b | 936 | ifdef CONFIG_TRIM_UNUSED_KSYMS |
ba79d401 | 937 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ |
2441e78b NP |
938 | "$(MAKE) KBUILD_MODULES=1 -f $(srctree)/Makefile vmlinux_prereq" |
939 | endif | |
23121ca2 NP |
940 | |
941 | # standalone target for easier testing | |
942 | include/generated/autoksyms.h: FORCE | |
ba79d401 | 943 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh true |
23121ca2 | 944 | |
2441e78b NP |
945 | # Final link of vmlinux |
946 | cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) | |
947 | quiet_cmd_link-vmlinux = LINK $@ | |
948 | ||
edf69470 | 949 | vmlinux: scripts/link-vmlinux.sh vmlinux_prereq $(vmlinux-deps) FORCE |
1f2bfbd0 | 950 | +$(call if_changed,link-vmlinux) |
741f98fe | 951 | |
dd92478a NP |
952 | # Build samples along the rest of the kernel |
953 | ifdef CONFIG_SAMPLES | |
954 | vmlinux-dirs += samples | |
955 | endif | |
956 | ||
38385f8f | 957 | # The actual objects are generated when descending, |
1da177e4 | 958 | # make sure no implicit rule kicks in |
1f2bfbd0 | 959 | $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
1da177e4 LT |
960 | |
961 | # Handle descending into subdirectories listed in $(vmlinux-dirs) | |
962 | # Preset locale variables to speed up the build process. Limit locale | |
963 | # tweaks to this spot to avoid wrong language settings when running | |
964 | # make menuconfig etc. | |
965 | # Error messages still appears in the original language | |
966 | ||
4f193362 | 967 | PHONY += $(vmlinux-dirs) |
5bb78269 | 968 | $(vmlinux-dirs): prepare scripts |
1da177e4 LT |
969 | $(Q)$(MAKE) $(build)=$@ |
970 | ||
0d0e7718 MM |
971 | define filechk_kernel.release |
972 | echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" | |
973 | endef | |
974 | ||
83a35e36 | 975 | # Store (new) KERNELRELEASE string in include/config/kernel.release |
f1d28fb0 | 976 | include/config/kernel.release: include/config/auto.conf FORCE |
0d0e7718 | 977 | $(call filechk,kernel.release) |
cb58455c SR |
978 | |
979 | ||
1da177e4 | 980 | # Things we need to do before we recursively start building the kernel |
5bb78269 SR |
981 | # or the modules are listed in "prepare". |
982 | # A multi level approach is used. prepareN is processed before prepareN-1. | |
983 | # archprepare is used in arch Makefiles and when processed asm symlink, | |
984 | # version.h and scripts_basic is processed / created. | |
1da177e4 | 985 | |
5bb78269 | 986 | # Listed in dependency order |
4f193362 | 987 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb78269 | 988 | |
86feeaa8 | 989 | # prepare3 is used to check if we are building in a separate output directory, |
1da177e4 LT |
990 | # and if so do: |
991 | # 1) Check that make has not been executed in the kernel src $(srctree) | |
f1d28fb0 | 992 | prepare3: include/config/kernel.release |
1da177e4 | 993 | ifneq ($(KBUILD_SRC),) |
fd54f502 | 994 | @$(kecho) ' Using $(srctree) as source for kernel' |
c955ccaf | 995 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
5369f550 MM |
996 | echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ |
997 | echo >&2 " in the '$(srctree)' directory.";\ | |
1da177e4 LT |
998 | /bin/false; \ |
999 | fi; | |
1da177e4 LT |
1000 | endif |
1001 | ||
c965b105 KC |
1002 | # prepare2 creates a makefile if using a separate output directory. |
1003 | # From this point forward, .config has been reprocessed, so any rules | |
1004 | # that need to depend on updated CONFIG_* values can be checked here. | |
1005 | prepare2: prepare3 prepare-compiler-check outputmakefile asm-generic | |
1da177e4 | 1006 | |
d183e6f5 | 1007 | prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ |
f7f16b77 | 1008 | include/config/auto.conf |
7bb9d092 | 1009 | $(cmd_crmodverdir) |
f2355416 NP |
1010 | $(Q)test -e include/generated/autoksyms.h || \ |
1011 | touch include/generated/autoksyms.h | |
1da177e4 | 1012 | |
6520fe55 | 1013 | archprepare: archheaders archscripts prepare1 scripts_basic |
5bb78269 | 1014 | |
6b90bd4b | 1015 | prepare0: archprepare gcc-plugins |
8d36a623 | 1016 | $(Q)$(MAKE) $(build)=. |
86feeaa8 | 1017 | |
1da177e4 | 1018 | # All the preparing.. |
b9ab5ebb JP |
1019 | prepare: prepare0 prepare-objtool |
1020 | ||
3b27a0c8 | 1021 | ifdef CONFIG_STACK_VALIDATION |
c2bb9e32 SR |
1022 | has_libelf := $(call try-run,\ |
1023 | echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf -,1,0) | |
3b27a0c8 JP |
1024 | ifeq ($(has_libelf),1) |
1025 | objtool_target := tools/objtool FORCE | |
1026 | else | |
b573d802 | 1027 | $(warning "Cannot use CONFIG_STACK_VALIDATION, please install libelf-dev, libelf-devel or elfutils-libelf-devel") |
3b27a0c8 JP |
1028 | SKIP_STACK_VALIDATION := 1 |
1029 | export SKIP_STACK_VALIDATION | |
1030 | endif | |
1031 | endif | |
1032 | ||
b9ab5ebb | 1033 | PHONY += prepare-objtool |
3b27a0c8 | 1034 | prepare-objtool: $(objtool_target) |
1da177e4 | 1035 | |
c965b105 KC |
1036 | # Check for CONFIG flags that require compiler support. Abort the build |
1037 | # after .config has been processed, but before the kernel build starts. | |
1038 | # | |
1039 | # For security-sensitive CONFIG options, we don't want to fallback and/or | |
1040 | # silently change which compiler flags will be used, since that leads to | |
1041 | # producing kernels with different security feature characteristics | |
1042 | # depending on the compiler used. (For example, "But I selected | |
1043 | # CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") | |
1044 | PHONY += prepare-compiler-check | |
1045 | prepare-compiler-check: FORCE | |
1046 | # Make sure compiler supports requested stack protector flag. | |
1047 | ifdef stackp-name | |
1048 | ifeq ($(call cc-option, $(stackp-flag)),) | |
1049 | @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ | |
1050 | $(stackp-flag) not supported by compiler >&2 && exit 1 | |
1051 | endif | |
1052 | endif | |
1053 | # Make sure compiler does not have buggy stack-protector support. | |
1054 | ifdef stackp-check | |
1055 | ifneq ($(shell $(CONFIG_SHELL) $(stackp-check) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y) | |
1056 | @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ | |
1057 | $(stackp-flag) available but compiler is broken >&2 && exit 1 | |
1058 | endif | |
1059 | endif | |
1060 | @: | |
1061 | ||
1da177e4 LT |
1062 | # Generate some files |
1063 | # --------------------------------------------------------------------------- | |
1064 | ||
1065 | # KERNELRELEASE can change from a few different places, meaning version.h | |
1066 | # needs to be updated, so this check is forced on all builds | |
1067 | ||
1068 | uts_len := 64 | |
63104eec SR |
1069 | define filechk_utsrelease.h |
1070 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ | |
1071 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ | |
1072 | exit 1; \ | |
1073 | fi; \ | |
1074 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) | |
1075 | endef | |
1da177e4 LT |
1076 | |
1077 | define filechk_version.h | |
450c6076 JJ |
1078 | (echo \#define LINUX_VERSION_CODE $(shell \ |
1079 | expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ | |
63104eec | 1080 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
1da177e4 LT |
1081 | endef |
1082 | ||
d183e6f5 | 1083 | $(version_h): $(srctree)/Makefile FORCE |
1da177e4 | 1084 | $(call filechk,version.h) |
223c24a7 | 1085 | $(Q)rm -f $(old_version_h) |
1da177e4 | 1086 | |
273b281f | 1087 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
63104eec SR |
1088 | $(call filechk,utsrelease.h) |
1089 | ||
179efcb4 VN |
1090 | PHONY += headerdep |
1091 | headerdep: | |
9663d989 PF |
1092 | $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ |
1093 | $(srctree)/scripts/headerdep.pl -I$(srctree)/include | |
179efcb4 | 1094 | |
88ecf814 DW |
1095 | # --------------------------------------------------------------------------- |
1096 | # Firmware install | |
1097 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware | |
1098 | export INSTALL_FW_PATH | |
1099 | ||
1100 | PHONY += firmware_install | |
2e8d696b | 1101 | firmware_install: |
88ecf814 DW |
1102 | @mkdir -p $(objtree)/firmware |
1103 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install | |
1104 | ||
8d730cfb DW |
1105 | # --------------------------------------------------------------------------- |
1106 | # Kernel headers | |
8d730cfb | 1107 | |
e6883b18 SR |
1108 | #Default location for installed headers |
1109 | export INSTALL_HDR_PATH = $(objtree)/usr | |
6d716275 | 1110 | |
2fb9b1bd SR |
1111 | # If we do an all arch process set dst to asm-$(hdr-arch) |
1112 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) | |
e6883b18 | 1113 | |
052ad274 PA |
1114 | PHONY += archheaders |
1115 | archheaders: | |
1116 | ||
6520fe55 PA |
1117 | PHONY += archscripts |
1118 | archscripts: | |
1119 | ||
e6883b18 | 1120 | PHONY += __headers |
2e8d696b | 1121 | __headers: $(version_h) scripts_basic asm-generic archheaders archscripts |
e1b702cf | 1122 | $(Q)$(MAKE) $(build)=scripts build_unifdef |
e6883b18 SR |
1123 | |
1124 | PHONY += headers_install_all | |
2fb9b1bd SR |
1125 | headers_install_all: |
1126 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install | |
6d716275 | 1127 | |
8d730cfb | 1128 | PHONY += headers_install |
e6883b18 | 1129 | headers_install: __headers |
10b63956 DH |
1130 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ |
1131 | $(error Headers not exportable for the $(SRCARCH) architecture)) | |
1132 | $(Q)$(MAKE) $(hdr-inst)=include/uapi | |
1133 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) | |
8d730cfb | 1134 | |
1f85712e MF |
1135 | PHONY += headers_check_all |
1136 | headers_check_all: headers_install_all | |
2fb9b1bd | 1137 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
1f85712e | 1138 | |
68475359 DW |
1139 | PHONY += headers_check |
1140 | headers_check: headers_install | |
10b63956 DH |
1141 | $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 |
1142 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 | |
68475359 | 1143 | |
5a5da78b SK |
1144 | # --------------------------------------------------------------------------- |
1145 | # Kernel selftest | |
1146 | ||
1147 | PHONY += kselftest | |
1148 | kselftest: | |
1149 | $(Q)$(MAKE) -C tools/testing/selftests run_tests | |
1150 | ||
dcb825a9 WL |
1151 | kselftest-clean: |
1152 | $(Q)$(MAKE) -C tools/testing/selftests clean | |
1153 | ||
3d6dee7a BJZ |
1154 | PHONY += kselftest-merge |
1155 | kselftest-merge: | |
1156 | $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) | |
1157 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ | |
1158 | -m $(objtree)/.config \ | |
1159 | $(srctree)/tools/testing/selftests/*/config | |
1160 | +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig | |
1161 | ||
1da177e4 LT |
1162 | # --------------------------------------------------------------------------- |
1163 | # Modules | |
1164 | ||
1165 | ifdef CONFIG_MODULES | |
1166 | ||
070b98bf | 1167 | # By default, build modules as well |
1da177e4 | 1168 | |
73d1393e | 1169 | all: modules |
1da177e4 | 1170 | |
3fbb43df | 1171 | # Build modules |
551559e1 | 1172 | # |
3fbb43df MY |
1173 | # A module can be listed more than once in obj-m resulting in |
1174 | # duplicate lines in modules.order files. Those are removed | |
1175 | # using awk while concatenating to the final file. | |
1da177e4 | 1176 | |
4f193362 | 1177 | PHONY += modules |
2da30e70 | 1178 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
551559e1 | 1179 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
fd54f502 | 1180 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1181 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
44463f7d | 1182 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
1da177e4 | 1183 | |
a6c36632 MM |
1184 | modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
1185 | $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin | |
1186 | ||
73d1393e | 1187 | %/modules.builtin: include/config/auto.conf |
a6c36632 MM |
1188 | $(Q)$(MAKE) $(modbuiltin)=$* |
1189 | ||
1da177e4 LT |
1190 | |
1191 | # Target to prepare building external modules | |
4f193362 | 1192 | PHONY += modules_prepare |
5bb78269 | 1193 | modules_prepare: prepare scripts |
1da177e4 LT |
1194 | |
1195 | # Target to install modules | |
4f193362 | 1196 | PHONY += modules_install |
1da177e4 LT |
1197 | modules_install: _modinst_ _modinst_post |
1198 | ||
4f193362 | 1199 | PHONY += _modinst_ |
2da30e70 | 1200 | _modinst_: |
1da177e4 LT |
1201 | @rm -rf $(MODLIB)/kernel |
1202 | @rm -f $(MODLIB)/source | |
1203 | @mkdir -p $(MODLIB)/kernel | |
890676c6 | 1204 | @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source |
1da177e4 LT |
1205 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
1206 | rm -f $(MODLIB)/build ; \ | |
7e1c0477 | 1207 | ln -s $(CURDIR) $(MODLIB)/build ; \ |
1da177e4 | 1208 | fi |
551559e1 | 1209 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
bc081dd6 | 1210 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
b805aa0e | 1211 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1212 | |
50a8ec31 | 1213 | # This depmod is only for convenience to give the initial |
1da177e4 LT |
1214 | # boot a modules.dep even before / is mounted read-write. However the |
1215 | # boot script depmod is the master version. | |
4f193362 | 1216 | PHONY += _modinst_post |
6d128e1e | 1217 | _modinst_post: _modinst_ |
88ecf814 | 1218 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
50a8ec31 | 1219 | $(call cmd,depmod) |
1da177e4 | 1220 | |
d890f510 JB |
1221 | ifeq ($(CONFIG_MODULE_SIG), y) |
1222 | PHONY += modules_sign | |
1223 | modules_sign: | |
1224 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign | |
1225 | endif | |
1226 | ||
1da177e4 LT |
1227 | else # CONFIG_MODULES |
1228 | ||
1229 | # Modules not configured | |
1230 | # --------------------------------------------------------------------------- | |
1231 | ||
612e47ce MY |
1232 | PHONY += modules modules_install |
1233 | modules modules_install: | |
5369f550 MM |
1234 | @echo >&2 |
1235 | @echo >&2 "The present kernel configuration has modules disabled." | |
1236 | @echo >&2 "Type 'make config' and enable loadable module support." | |
1237 | @echo >&2 "Then build a kernel with module support enabled." | |
1238 | @echo >&2 | |
1da177e4 LT |
1239 | @exit 1 |
1240 | ||
1241 | endif # CONFIG_MODULES | |
1242 | ||
1da177e4 LT |
1243 | ### |
1244 | # Cleaning is done on three levels. | |
1245 | # make clean Delete most generated files | |
1246 | # Leave enough to build external modules | |
1247 | # make mrproper Delete the current configuration, and all generated files | |
1248 | # make distclean Remove editor backup files, patch leftover files and the like | |
1249 | ||
1250 | # Directories & files removed with 'make clean' | |
1251 | CLEAN_DIRS += $(MODVERDIR) | |
1da177e4 LT |
1252 | |
1253 | # Directories & files removed with 'make mrproper' | |
d8ecc5cd | 1254 | MRPROPER_DIRS += include/config usr/include include/generated \ |
3fbb43df | 1255 | arch/*/include/generated .tmp_objdiff |
c22bd32c | 1256 | MRPROPER_FILES += .config .config.old .version .old_version \ |
d5b71936 | 1257 | Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ |
fb117949 DW |
1258 | signing_key.pem signing_key.priv signing_key.x509 \ |
1259 | x509.genkey extra_certificates signing_key.x509.keyid \ | |
3ee7b3fa | 1260 | signing_key.x509.signer vmlinux-gdb.py |
1da177e4 LT |
1261 | |
1262 | # clean - Delete most, but leave enough to build external modules | |
1263 | # | |
1264 | clean: rm-dirs := $(CLEAN_DIRS) | |
1265 | clean: rm-files := $(CLEAN_FILES) | |
fb68d4be | 1266 | clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) |
1da177e4 | 1267 | |
bd1ee804 | 1268 | PHONY += $(clean-dirs) clean archclean vmlinuxclean |
1da177e4 LT |
1269 | $(clean-dirs): |
1270 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1271 | ||
bd1ee804 PM |
1272 | vmlinuxclean: |
1273 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean | |
1274 | ||
1275 | clean: archclean vmlinuxclean | |
1da177e4 LT |
1276 | |
1277 | # mrproper - Delete all generated files, including .config | |
1278 | # | |
1279 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) | |
1280 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) | |
1281 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) | |
1282 | ||
4f193362 | 1283 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4 LT |
1284 | $(mrproper-dirs): |
1285 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) | |
1286 | ||
1287 | mrproper: clean archmrproper $(mrproper-dirs) | |
1288 | $(call cmd,rmdirs) | |
1289 | $(call cmd,rmfiles) | |
1290 | ||
1291 | # distclean | |
1292 | # | |
4f193362 | 1293 | PHONY += distclean |
1da177e4 LT |
1294 | |
1295 | distclean: mrproper | |
1296 | @find $(srctree) $(RCS_FIND_IGNORE) \ | |
070b98bf | 1297 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1da177e4 | 1298 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
a03fcb50 | 1299 | -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \ |
1da177e4 LT |
1300 | -type f -print | xargs rm -f |
1301 | ||
1302 | ||
1303 | # Packaging of the kernel to various formats | |
1304 | # --------------------------------------------------------------------------- | |
1305 | # rpm target kept for backward compatibility | |
c79624c1 | 1306 | package-dir := scripts/package |
1da177e4 | 1307 | |
bafb6747 ACM |
1308 | %src-pkg: FORCE |
1309 | $(Q)$(MAKE) $(build)=$(package-dir) $@ | |
031ecc6d | 1310 | %pkg: include/config/kernel.release FORCE |
6c2133e1 | 1311 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6d | 1312 | rpm: include/config/kernel.release FORCE |
6c2133e1 | 1313 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4 LT |
1314 | |
1315 | ||
1316 | # Brief documentation of the typical targets used | |
1317 | # --------------------------------------------------------------------------- | |
1318 | ||
5dffbe81 | 1319 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
a1e7b7bb | 1320 | boards := $(sort $(notdir $(boards))) |
5dffbe81 SB |
1321 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
1322 | board-dirs := $(sort $(notdir $(board-dirs:/=))) | |
1da177e4 | 1323 | |
fe69b420 | 1324 | PHONY += help |
1da177e4 LT |
1325 | help: |
1326 | @echo 'Cleaning targets:' | |
5ea084ef | 1327 | @echo ' clean - Remove most generated files but keep the config and' |
5cc8d246 | 1328 | @echo ' enough build support to build external modules' |
5ea084ef | 1329 | @echo ' mrproper - Remove all generated files + config + various backup files' |
5cc8d246 | 1330 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4 LT |
1331 | @echo '' |
1332 | @echo 'Configuration targets:' | |
1333 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help | |
1334 | @echo '' | |
1335 | @echo 'Other generic targets:' | |
1336 | @echo ' all - Build all targets marked with [*]' | |
1337 | @echo '* vmlinux - Build the bare kernel' | |
1338 | @echo '* modules - Build all modules' | |
9cc5d74c | 1339 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
88ecf814 DW |
1340 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
1341 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' | |
1da177e4 | 1342 | @echo ' dir/ - Build all files in dir and below' |
40ab87a4 | 1343 | @echo ' dir/file.[ois] - Build specified target only' |
62718979 JP |
1344 | @echo ' dir/file.lst - Build specified mixed source/assembly target only' |
1345 | @echo ' (requires a recent binutils and recent build (System.map))' | |
155ad605 | 1346 | @echo ' dir/file.ko - Build module including final link' |
c4d5ee67 | 1347 | @echo ' modules_prepare - Set up for building external modules' |
1da177e4 LT |
1348 | @echo ' tags/TAGS - Generate tags file for editors' |
1349 | @echo ' cscope - Generate cscope index' | |
f4ed1009 | 1350 | @echo ' gtags - Generate GNU GLOBAL index' |
3f1d9a6c MM |
1351 | @echo ' kernelrelease - Output the release version string (use with make -s)' |
1352 | @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' | |
1353 | @echo ' image_name - Output the image name (use with make -s)' | |
2fb9b1bd | 1354 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
59df3230 | 1355 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
2fb9b1bd | 1356 | echo '' |
1da177e4 | 1357 | @echo 'Static analysers' |
1da177e4 LT |
1358 | @echo ' checkstack - Generate a list of stack hogs' |
1359 | @echo ' namespacecheck - Name space analysis on compiled kernel' | |
aa025e7d | 1360 | @echo ' versioncheck - Sanity check on version.h usage' |
ec2d987f | 1361 | @echo ' includecheck - Check for duplicate included header files' |
295ac051 | 1362 | @echo ' export_report - List the usages of all exported symbols' |
179efcb4 | 1363 | @echo ' headers_check - Sanity check on exported headers' |
74425eee NP |
1364 | @echo ' headerdep - Detect inclusion cycles in headers' |
1365 | @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help | |
1366 | @echo '' | |
5a5da78b SK |
1367 | @echo 'Kernel selftest' |
1368 | @echo ' kselftest - Build and run kernel selftest (run as root)' | |
1369 | @echo ' Build, install, and boot kernel before' | |
1370 | @echo ' running kselftest on it' | |
dcb825a9 | 1371 | @echo ' kselftest-clean - Remove all generated kselftest files' |
3d6dee7a BJZ |
1372 | @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existed' |
1373 | @echo ' .config.' | |
5a5da78b | 1374 | @echo '' |
1da177e4 | 1375 | @echo 'Kernel packaging:' |
6c2133e1 | 1376 | @$(MAKE) $(build)=$(package-dir) help |
1da177e4 LT |
1377 | @echo '' |
1378 | @echo 'Documentation targets:' | |
ebc88ef0 JN |
1379 | @$(MAKE) -f $(srctree)/Documentation/Makefile.sphinx dochelp |
1380 | @echo '' | |
1da177e4 LT |
1381 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp |
1382 | @echo '' | |
01dee188 | 1383 | @echo 'Architecture specific targets ($(SRCARCH)):' |
1da177e4 | 1384 | @$(if $(archhelp),$(archhelp),\ |
01dee188 | 1385 | echo ' No architecture specific help defined for $(SRCARCH)') |
1da177e4 LT |
1386 | @echo '' |
1387 | @$(if $(boards), \ | |
1388 | $(foreach b, $(boards), \ | |
1389 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ | |
1390 | echo '') | |
5dffbe81 SB |
1391 | @$(if $(board-dirs), \ |
1392 | $(foreach b, $(board-dirs), \ | |
1393 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ | |
1394 | printf " %-16s - Show all of the above\\n" help-boards; \ | |
1395 | echo '') | |
1da177e4 LT |
1396 | |
1397 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' | |
45d506bd | 1398 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4 | 1399 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
701842e3 DK |
1400 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
1401 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' | |
af07ce3e | 1402 | @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
28bc20dc SR |
1403 | @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' |
1404 | @echo ' 1: warnings which may be relevant and do not occur too often' | |
1405 | @echo ' 2: warnings which occur quite often but may still be relevant' | |
1406 | @echo ' 3: more obscure warnings, can most likely be ignored' | |
a6de553d | 1407 | @echo ' Multiple levels can be combined with W=12 or W=123' |
1da177e4 LT |
1408 | @echo '' |
1409 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' | |
1410 | @echo 'For further info see the ./README file' | |
1411 | ||
1412 | ||
5dffbe81 SB |
1413 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
1414 | ||
1415 | help-boards: $(help-board-dirs) | |
1416 | ||
fbae4d58 | 1417 | boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) |
5dffbe81 SB |
1418 | |
1419 | $(help-board-dirs): help-%: | |
1420 | @echo 'Architecture specific targets ($(SRCARCH) $*):' | |
1421 | @$(if $(boards-per-dir), \ | |
1422 | $(foreach b, $(boards-per-dir), \ | |
1423 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ | |
1424 | echo '') | |
1425 | ||
1426 | ||
1da177e4 LT |
1427 | # Documentation targets |
1428 | # --------------------------------------------------------------------------- | |
d565127d | 1429 | DOC_TARGETS := xmldocs sgmldocs psdocs latexdocs pdfdocs htmldocs mandocs installmandocs epubdocs cleandocs |
22cba31b JN |
1430 | PHONY += $(DOC_TARGETS) |
1431 | $(DOC_TARGETS): scripts_basic FORCE | |
b479bfd0 | 1432 | $(Q)$(MAKE) $(build)=scripts build_docproc build_check-lc_ctype |
22cba31b | 1433 | $(Q)$(MAKE) $(build)=Documentation -f $(srctree)/Documentation/Makefile.sphinx $@ |
1da177e4 LT |
1434 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
1435 | ||
1436 | else # KBUILD_EXTMOD | |
1437 | ||
1438 | ### | |
1439 | # External module support. | |
1440 | # When building external modules the kernel used as basis is considered | |
1441 | # read-only, and no consistency checks are made and the make | |
1442 | # system is not used on the basis kernel. If updates are required | |
1443 | # in the basis kernel ordinary make commands (without M=...) must | |
1444 | # be used. | |
1445 | # | |
1446 | # The following are the only valid targets when building external | |
1447 | # modules. | |
1448 | # make M=dir clean Delete all automatically generated files | |
1449 | # make M=dir modules Make all modules in specified dir | |
1450 | # make M=dir Same as 'make M=dir modules' | |
1451 | # make M=dir modules_install | |
070b98bf | 1452 | # Install the modules built in the module directory |
1da177e4 LT |
1453 | # Assumes install directory is already created |
1454 | ||
1455 | # We are always building modules | |
1456 | KBUILD_MODULES := 1 | |
4f193362 | 1457 | PHONY += crmodverdir |
1da177e4 | 1458 | crmodverdir: |
7bb9d092 | 1459 | $(cmd_crmodverdir) |
1da177e4 | 1460 | |
4f193362 | 1461 | PHONY += $(objtree)/Module.symvers |
1da177e4 LT |
1462 | $(objtree)/Module.symvers: |
1463 | @test -e $(objtree)/Module.symvers || ( \ | |
1464 | echo; \ | |
1465 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ | |
1466 | echo " is missing; modules will have no dependencies and modversions."; \ | |
1467 | echo ) | |
1468 | ||
1469 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) | |
4f193362 | 1470 | PHONY += $(module-dirs) modules |
1da177e4 LT |
1471 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1472 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) | |
1473 | ||
1474 | modules: $(module-dirs) | |
fd54f502 | 1475 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1476 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4 | 1477 | |
4f193362 | 1478 | PHONY += modules_install |
a67dc21a | 1479 | modules_install: _emodinst_ _emodinst_post |
e6304663 | 1480 | |
4f193362 PS |
1481 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1482 | PHONY += _emodinst_ | |
a67dc21a | 1483 | _emodinst_: |
a67dc21a | 1484 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e | 1485 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1486 | |
4f193362 | 1487 | PHONY += _emodinst_post |
a67dc21a SR |
1488 | _emodinst_post: _emodinst_ |
1489 | $(call cmd,depmod) | |
1490 | ||
1da177e4 LT |
1491 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1492 | ||
4f193362 | 1493 | PHONY += $(clean-dirs) clean |
1da177e4 LT |
1494 | $(clean-dirs): |
1495 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1496 | ||
1497 | clean: rm-dirs := $(MODVERDIR) | |
88d7be03 | 1498 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
1da177e4 | 1499 | |
fe69b420 | 1500 | PHONY += help |
1da177e4 LT |
1501 | help: |
1502 | @echo ' Building external modules.' | |
1503 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' | |
1504 | @echo '' | |
1505 | @echo ' modules - default target, build the module(s)' | |
1506 | @echo ' modules_install - install the module' | |
1507 | @echo ' clean - remove generated files in module directory only' | |
1508 | @echo '' | |
06300b21 SR |
1509 | |
1510 | # Dummies... | |
4f193362 | 1511 | PHONY += prepare scripts |
06300b21 SR |
1512 | prepare: ; |
1513 | scripts: ; | |
1da177e4 LT |
1514 | endif # KBUILD_EXTMOD |
1515 | ||
88d7be03 MM |
1516 | clean: $(clean-dirs) |
1517 | $(call cmd,rmdirs) | |
1518 | $(call cmd,rmfiles) | |
43f67c98 | 1519 | @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
88d7be03 | 1520 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
addbcdbb | 1521 | -o -name '*.ko.*' \ |
866ced95 | 1522 | -o -name '*.dwo' \ |
d523b255 | 1523 | -o -name '*.su' \ |
88d7be03 MM |
1524 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
1525 | -o -name '*.symtypes' -o -name 'modules.order' \ | |
1526 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ | |
6b90bd4b | 1527 | -o -name '*.c.[012]*.*' \ |
88d7be03 MM |
1528 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
1529 | ||
1da177e4 LT |
1530 | # Generate tags for editors |
1531 | # --------------------------------------------------------------------------- | |
a680eedc SR |
1532 | quiet_cmd_tags = GEN $@ |
1533 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ | |
1da177e4 | 1534 | |
f4ed1009 | 1535 | tags TAGS cscope gtags: FORCE |
1da177e4 LT |
1536 | $(call cmd,tags) |
1537 | ||
1da177e4 LT |
1538 | # Scripts to check various things for consistency |
1539 | # --------------------------------------------------------------------------- | |
1540 | ||
279f3dd3 PF |
1541 | PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
1542 | ||
1da177e4 | 1543 | includecheck: |
436f876c | 1544 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4 | 1545 | -name '*.[hcS]' -type f -print | sort \ |
80007434 | 1546 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1da177e4 LT |
1547 | |
1548 | versioncheck: | |
2ee2d292 | 1549 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4 | 1550 | -name '*.[hcS]' -type f -print | sort \ |
80007434 | 1551 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1da177e4 | 1552 | |
74425eee NP |
1553 | coccicheck: |
1554 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ | |
1555 | ||
1da177e4 LT |
1556 | namespacecheck: |
1557 | $(PERL) $(srctree)/scripts/namespace.pl | |
1558 | ||
295ac051 AB |
1559 | export_report: |
1560 | $(PERL) $(srctree)/scripts/export_report.pl | |
1561 | ||
1da177e4 LT |
1562 | endif #ifeq ($(config-targets),1) |
1563 | endif #ifeq ($(mixed-targets),1) | |
1564 | ||
c398ff00 | 1565 | PHONY += checkstack kernelrelease kernelversion image_name |
e3ccf6e3 | 1566 | |
011e3a9a JD |
1567 | # UML needs a little special treatment here. It wants to use the host |
1568 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone | |
1569 | # else wants $(ARCH), including people doing cross-builds, which means | |
1570 | # that $(SUBARCH) doesn't work here. | |
1571 | ifeq ($(ARCH), um) | |
1572 | CHECKSTACK_ARCH := $(SUBARCH) | |
1573 | else | |
1574 | CHECKSTACK_ARCH := $(ARCH) | |
1575 | endif | |
1da177e4 LT |
1576 | checkstack: |
1577 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ | |
011e3a9a | 1578 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1da177e4 | 1579 | |
7b8ea53d AW |
1580 | kernelrelease: |
1581 | @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" | |
01ab1788 | 1582 | |
cb58455c | 1583 | kernelversion: |
2244cbd8 | 1584 | @echo $(KERNELVERSION) |
1da177e4 | 1585 | |
c398ff00 MM |
1586 | image_name: |
1587 | @echo $(KBUILD_IMAGE) | |
1588 | ||
ea01fa9f BP |
1589 | # Clear a bunch of variables before executing the submake |
1590 | tools/: FORCE | |
bf35182f | 1591 | $(Q)mkdir -p $(objtree)/tools |
e17cf3a8 | 1592 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ |
ea01fa9f BP |
1593 | |
1594 | tools/%: FORCE | |
bf35182f | 1595 | $(Q)mkdir -p $(objtree)/tools |
e17cf3a8 | 1596 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ $* |
ea01fa9f | 1597 | |
06300b21 SR |
1598 | # Single targets |
1599 | # --------------------------------------------------------------------------- | |
bc2546a6 | 1600 | # Single targets are compatible with: |
e1b8513d | 1601 | # - build with mixed source and output |
bc2546a6 SR |
1602 | # - build with separate output dir 'make O=...' |
1603 | # - external modules | |
1604 | # | |
1605 | # target-dir => where to store outputfile | |
1606 | # build-dir => directory in kernel source tree to use | |
1607 | ||
1608 | ifeq ($(KBUILD_EXTMOD),) | |
aa360879 | 1609 | build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a6 SR |
1610 | target-dir = $(dir $@) |
1611 | else | |
1612 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) | |
1613 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) | |
1614 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) | |
1615 | endif | |
1616 | ||
f6ecebd6 | 1617 | %.s: %.c prepare scripts FORCE |
bc2546a6 | 1618 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1619 | %.i: %.c prepare scripts FORCE |
bc2546a6 | 1620 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1621 | %.o: %.c prepare scripts FORCE |
bc2546a6 | 1622 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1623 | %.lst: %.c prepare scripts FORCE |
bc2546a6 | 1624 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1625 | %.s: %.S prepare scripts FORCE |
bc2546a6 | 1626 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1627 | %.o: %.S prepare scripts FORCE |
bc2546a6 | 1628 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde675 AG |
1629 | %.symtypes: %.c prepare scripts FORCE |
1630 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | |
06300b21 | 1631 | |
bc2546a6 | 1632 | # Modules |
31110ebb SR |
1633 | /: prepare scripts FORCE |
1634 | $(cmd_crmodverdir) | |
1635 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ | |
1636 | $(build)=$(build-dir) | |
8e2faea8 | 1637 | # Make sure the latest headers are built for Documentation |
ddea05fa | 1638 | Documentation/ samples/: headers_install |
31110ebb | 1639 | %/: prepare scripts FORCE |
7bb9d092 | 1640 | $(cmd_crmodverdir) |
06300b21 | 1641 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 SR |
1642 | $(build)=$(build-dir) |
1643 | %.ko: prepare scripts FORCE | |
7bb9d092 | 1644 | $(cmd_crmodverdir) |
06300b21 | 1645 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 | 1646 | $(build)=$(build-dir) $(@:.ko=.o) |
b805aa0e | 1647 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21 | 1648 | |
38385f8f | 1649 | # FIXME Should go into a make.lib or something |
1da177e4 LT |
1650 | # =========================================================================== |
1651 | ||
1652 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) | |
1653 | cmd_rmdirs = rm -rf $(rm-dirs) | |
1654 | ||
1655 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) | |
1656 | cmd_rmfiles = rm -f $(rm-files) | |
1657 | ||
bc3c26fe | 1658 | # Run depmod only if we have System.map and depmod is executable |
50a8ec31 | 1659 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
569658dd | 1660 | cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
b92021b0 | 1661 | $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" |
50a8ec31 | 1662 | |
7bb9d092 | 1663 | # Create temporary dir for module support files |
ab19f879 SR |
1664 | # clean it up only when building all modules |
1665 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ | |
1666 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) | |
1da177e4 | 1667 | |
1da177e4 LT |
1668 | # read all saved command lines |
1669 | ||
1670 | targets := $(wildcard $(sort $(targets))) | |
1671 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | |
1672 | ||
1673 | ifneq ($(cmd_files),) | |
1674 | $(cmd_files): ; # Do not try to update included dependency files | |
1675 | include $(cmd_files) | |
1676 | endif | |
1677 | ||
1da177e4 LT |
1678 | endif # skip-makefile |
1679 | ||
4f193362 | 1680 | PHONY += FORCE |
1da177e4 | 1681 | FORCE: |
4f193362 | 1682 | |
4f193362 | 1683 | # Declare the contents of the .PHONY variable as phony. We keep that |
fe8d0a41 | 1684 | # information in a variable so we can use it in if_changed and friends. |
4f193362 | 1685 | .PHONY: $(PHONY) |