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Commit | Line | Data |
---|---|---|
c517d838 | 1 | VERSION = 4 |
5771a8c0 | 2 | PATCHLEVEL = 13 |
51582b4b | 3 | SUBLEVEL = 13 |
569dbb88 | 4 | EXTRAVERSION = |
566cf877 | 5 | NAME = Fearless Coyote |
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 | ||
6f0fa58e | 87 | ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) |
066b7ed9 | 88 | quiet=silent_ |
e572d088 | 89 | tools_silent=s |
066b7ed9 | 90 | endif |
066b7ed9 MM |
91 | |
92 | export quiet Q KBUILD_VERBOSE | |
93 | ||
1da177e4 LT |
94 | # kbuild supports saving output files in a separate directory. |
95 | # To locate output files in a separate directory two syntaxes are supported. | |
96 | # In both cases the working directory must be the root of the kernel src. | |
97 | # 1) O= | |
98 | # Use "make O=dir/to/store/output/files/" | |
070b98bf | 99 | # |
1da177e4 LT |
100 | # 2) Set KBUILD_OUTPUT |
101 | # Set the environment variable KBUILD_OUTPUT to point to the directory | |
102 | # where the output files shall be placed. | |
103 | # export KBUILD_OUTPUT=dir/to/store/output/files/ | |
104 | # make | |
105 | # | |
106 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment | |
107 | # variable. | |
108 | ||
c4e6fff1 C |
109 | # KBUILD_SRC is not intended to be used by the regular user (for now), |
110 | # it is set on invocation of make with KBUILD_OUTPUT or O= specified. | |
1da177e4 LT |
111 | ifeq ($(KBUILD_SRC),) |
112 | ||
113 | # OK, Make called in directory where kernel src resides | |
114 | # Do we want to locate output files in a separate directory? | |
b8b0618c CR |
115 | ifeq ("$(origin O)", "command line") |
116 | KBUILD_OUTPUT := $(O) | |
1da177e4 LT |
117 | endif |
118 | ||
119 | # That's our default target when none is given on the command line | |
4f193362 | 120 | PHONY := _all |
1da177e4 LT |
121 | _all: |
122 | ||
1cacc9ab SR |
123 | # Cancel implicit rules on top Makefile |
124 | $(CURDIR)/Makefile Makefile: ; | |
125 | ||
51193b76 RJ |
126 | ifneq ($(words $(subst :, ,$(CURDIR))), 1) |
127 | $(error main directory cannot contain spaces nor colons) | |
128 | endif | |
129 | ||
1da177e4 | 130 | ifneq ($(KBUILD_OUTPUT),) |
1da177e4 LT |
131 | # check that the output directory actually exists |
132 | saved-output := $(KBUILD_OUTPUT) | |
1c9e70a5 MY |
133 | KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ |
134 | && /bin/pwd) | |
1da177e4 | 135 | $(if $(KBUILD_OUTPUT),, \ |
1c9e70a5 | 136 | $(error failed to create output directory "$(saved-output)")) |
1da177e4 | 137 | |
0b35786d MM |
138 | PHONY += $(MAKECMDGOALS) sub-make |
139 | ||
1cacc9ab | 140 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
16f89098 | 141 | @: |
0b35786d | 142 | |
c4e6fff1 | 143 | # Invoke a second make in the output directory, passing relevant variables |
2e8d696b | 144 | sub-make: |
745a2543 | 145 | $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ |
aa55c8e2 | 146 | -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) |
1da177e4 LT |
147 | |
148 | # Leave processing to above invocation of make | |
149 | skip-makefile := 1 | |
150 | endif # ifneq ($(KBUILD_OUTPUT),) | |
151 | endif # ifeq ($(KBUILD_SRC),) | |
152 | ||
153 | # We process the rest of the Makefile if this is the final invocation of make | |
154 | ifeq ($(skip-makefile),) | |
155 | ||
7ff52571 MY |
156 | # Do not print "Entering directory ...", |
157 | # but we want to display it when entering to the output directory | |
158 | # so that IDEs/editors are able to understand relative filenames. | |
159 | MAKEFLAGS += --no-print-directory | |
160 | ||
aa55c8e2 MY |
161 | # Call a source code checker (by default, "sparse") as part of the |
162 | # C compilation. | |
163 | # | |
164 | # Use 'make C=1' to enable checking of only re-compiled files. | |
165 | # Use 'make C=2' to enable checking of *all* source files, regardless | |
166 | # of whether they are re-compiled or not. | |
167 | # | |
036db11c C |
168 | # See the file "Documentation/dev-tools/sparse.rst" for more details, |
169 | # including where to get the "sparse" utility. | |
aa55c8e2 MY |
170 | |
171 | ifeq ("$(origin C)", "command line") | |
172 | KBUILD_CHECKSRC = $(C) | |
173 | endif | |
174 | ifndef KBUILD_CHECKSRC | |
175 | KBUILD_CHECKSRC = 0 | |
176 | endif | |
177 | ||
36b4777f MS |
178 | # Call message checker as part of the C compilation |
179 | # | |
180 | # Use 'make D=1' to enable checking | |
181 | # Use 'make D=2' to create the message catalog | |
182 | ||
183 | ifdef D | |
184 | ifeq ("$(origin D)", "command line") | |
185 | KBUILD_KMSG_CHECK = $(D) | |
186 | endif | |
187 | endif | |
188 | ifndef KBUILD_KMSG_CHECK | |
189 | KBUILD_KMSG_CHECK = 0 | |
190 | endif | |
191 | ||
aa55c8e2 MY |
192 | # Use make M=dir to specify directory of external module to build |
193 | # Old syntax make ... SUBDIRS=$PWD is still supported | |
194 | # Setting the environment variable KBUILD_EXTMOD take precedence | |
195 | ifdef SUBDIRS | |
196 | KBUILD_EXTMOD ?= $(SUBDIRS) | |
197 | endif | |
198 | ||
199 | ifeq ("$(origin M)", "command line") | |
200 | KBUILD_EXTMOD := $(M) | |
201 | endif | |
202 | ||
1da177e4 LT |
203 | # If building an external module we do not care about the all: rule |
204 | # but instead _all depend on modules | |
4f193362 | 205 | PHONY += all |
1da177e4 LT |
206 | ifeq ($(KBUILD_EXTMOD),) |
207 | _all: all | |
208 | else | |
209 | _all: modules | |
210 | endif | |
211 | ||
9da0763b MM |
212 | ifeq ($(KBUILD_SRC),) |
213 | # building in the source tree | |
214 | srctree := . | |
215 | else | |
216 | ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) | |
217 | # building in a subdirectory of the source tree | |
218 | srctree := .. | |
219 | else | |
220 | srctree := $(KBUILD_SRC) | |
221 | endif | |
222 | endif | |
7e1c0477 | 223 | objtree := . |
1da177e4 LT |
224 | src := $(srctree) |
225 | obj := $(objtree) | |
226 | ||
0f558c33 | 227 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
1da177e4 | 228 | |
11294235 | 229 | export srctree objtree VPATH |
1da177e4 | 230 | |
1da177e4 LT |
231 | # SUBARCH tells the usermode build what the underlying arch is. That is set |
232 | # first, and if a usermode build is happening, the "ARCH=um" on the command | |
233 | # line overrides the setting of ARCH below. If a native build is happening, | |
38385f8f | 234 | # then ARCH is assigned, getting whatever value it gets normally, and |
1da177e4 LT |
235 | # SUBARCH is subsequently ignored. |
236 | ||
ffee0de4 DW |
237 | SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ |
238 | -e s/sun4u/sparc64/ \ | |
1da177e4 | 239 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
39990b5e | 240 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
236b1957 | 241 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
f1b99392 | 242 | -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) |
1da177e4 LT |
243 | |
244 | # Cross compiling and selecting different set of gcc/bin-utils | |
245 | # --------------------------------------------------------------------------- | |
246 | # | |
247 | # When performing cross compilation for other architectures ARCH shall be set | |
248 | # to the target architecture. (See arch/* for the possibilities). | |
249 | # ARCH can be set during invocation of make: | |
250 | # make ARCH=ia64 | |
251 | # Another way is to have ARCH set in the environment. | |
252 | # The default ARCH is the host where make is executed. | |
253 | ||
254 | # CROSS_COMPILE specify the prefix used for all executables used | |
255 | # during compilation. Only gcc and related bin-utils executables | |
256 | # are prefixed with $(CROSS_COMPILE). | |
257 | # CROSS_COMPILE can be set on the command line | |
258 | # make CROSS_COMPILE=ia64-linux- | |
259 | # Alternatively CROSS_COMPILE can be set in the environment. | |
84336466 RM |
260 | # A third alternative is to store a setting in .config so that plain |
261 | # "make" in the configured kernel build directory always uses that. | |
1da177e4 LT |
262 | # Default value for CROSS_COMPILE is not to prefix executables |
263 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile | |
2331d1a6 | 264 | ARCH ?= $(SUBARCH) |
84336466 | 265 | CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
1da177e4 LT |
266 | |
267 | # Architecture as present in compile.h | |
6752ed90 TG |
268 | UTS_MACHINE := $(ARCH) |
269 | SRCARCH := $(ARCH) | |
1da177e4 | 270 | |
d746d647 SR |
271 | # Additional ARCH settings for x86 |
272 | ifeq ($(ARCH),i386) | |
273 | SRCARCH := x86 | |
274 | endif | |
275 | ifeq ($(ARCH),x86_64) | |
276 | SRCARCH := x86 | |
277 | endif | |
74b469f2 | 278 | |
5e538790 | 279 | # Additional ARCH settings for sparc |
e69f58c0 NK |
280 | ifeq ($(ARCH),sparc32) |
281 | SRCARCH := sparc | |
282 | endif | |
a439fe51 | 283 | ifeq ($(ARCH),sparc64) |
5e538790 | 284 | SRCARCH := sparc |
a439fe51 | 285 | endif |
2fb9b1bd | 286 | |
3cc000b5 PM |
287 | # Additional ARCH settings for sh |
288 | ifeq ($(ARCH),sh64) | |
289 | SRCARCH := sh | |
290 | endif | |
291 | ||
18aecc2b | 292 | # Additional ARCH settings for tile |
6738d321 CM |
293 | ifeq ($(ARCH),tilepro) |
294 | SRCARCH := tile | |
295 | endif | |
18aecc2b CM |
296 | ifeq ($(ARCH),tilegx) |
297 | SRCARCH := tile | |
298 | endif | |
299 | ||
5e538790 SR |
300 | # Where to locate arch specific headers |
301 | hdr-arch := $(SRCARCH) | |
302 | ||
14cdd3c4 | 303 | KCONFIG_CONFIG ?= .config |
41263fc6 | 304 | export KCONFIG_CONFIG |
14cdd3c4 | 305 | |
1da177e4 LT |
306 | # SHELL used by kbuild |
307 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
308 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
309 | else echo sh; fi ; fi) | |
310 | ||
d7f14c66 UKK |
311 | HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS) |
312 | HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS) | |
313 | HOST_LFS_LIBS := $(shell getconf LFS_LIBS) | |
314 | ||
070b98bf SR |
315 | HOSTCC = gcc |
316 | HOSTCXX = g++ | |
d7f14c66 UKK |
317 | HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \ |
318 | -fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) | |
319 | HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) | |
320 | HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) | |
321 | HOST_LOADLIBES := $(HOST_LFS_LIBS) | |
1da177e4 | 322 | |
61163efa BW |
323 | ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) |
324 | HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ | |
325 | -Wno-missing-field-initializers -fno-delete-null-pointer-checks | |
326 | endif | |
327 | ||
070b98bf SR |
328 | # Decide whether to build built-in, modular, or both. |
329 | # Normally, just do built-in. | |
1da177e4 LT |
330 | |
331 | KBUILD_MODULES := | |
332 | KBUILD_BUILTIN := 1 | |
333 | ||
3fbb43df MY |
334 | # If we have only "make modules", don't compile built-in objects. |
335 | # When we're building modules with modversions, we need to consider | |
336 | # the built-in objects during the descend as well, in order to | |
337 | # make sure the checksums are up to date before we record them. | |
1da177e4 LT |
338 | |
339 | ifeq ($(MAKECMDGOALS),modules) | |
340 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) | |
341 | endif | |
342 | ||
3fbb43df MY |
343 | # If we have "make <whatever> modules", compile modules |
344 | # in addition to whatever we do anyway. | |
345 | # Just "make" or "make all" shall build modules as well | |
1da177e4 LT |
346 | |
347 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) | |
348 | KBUILD_MODULES := 1 | |
349 | endif | |
350 | ||
351 | ifeq ($(MAKECMDGOALS),) | |
352 | KBUILD_MODULES := 1 | |
353 | endif | |
354 | ||
e579d351 | 355 | export KBUILD_MODULES KBUILD_BUILTIN |
1da177e4 LT |
356 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
357 | ||
1cacc9ab | 358 | # We need some generic definitions (do not try to remake the file). |
a436bb7b MY |
359 | scripts/Kbuild.include: ; |
360 | include scripts/Kbuild.include | |
1da177e4 LT |
361 | |
362 | # Make variables (CC, etc...) | |
1da177e4 LT |
363 | AS = $(CROSS_COMPILE)as |
364 | LD = $(CROSS_COMPILE)ld | |
365 | CC = $(CROSS_COMPILE)gcc | |
366 | CPP = $(CC) -E | |
367 | AR = $(CROSS_COMPILE)ar | |
368 | NM = $(CROSS_COMPILE)nm | |
369 | STRIP = $(CROSS_COMPILE)strip | |
370 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
371 | OBJDUMP = $(CROSS_COMPILE)objdump | |
372 | AWK = awk | |
373 | GENKSYMS = scripts/genksyms/genksyms | |
caa27b66 | 374 | INSTALLKERNEL := installkernel |
1da177e4 | 375 | DEPMOD = /sbin/depmod |
1da177e4 | 376 | PERL = perl |
011bf125 | 377 | PYTHON = python |
1da177e4 LT |
378 | CHECK = sparse |
379 | ||
80a7d1d9 HE |
380 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
381 | -Wbitwise -Wno-return-void $(CF) | |
36b4777f | 382 | KMSG_CHECK = $(srctree)/scripts/kmsg-doc |
b36fad65 | 383 | NOSTDINC_FLAGS = |
6588169d SR |
384 | CFLAGS_MODULE = |
385 | AFLAGS_MODULE = | |
386 | LDFLAGS_MODULE = | |
1da177e4 LT |
387 | CFLAGS_KERNEL = |
388 | AFLAGS_KERNEL = | |
b36fad65 | 389 | LDFLAGS_vmlinux = |
b334e19a | 390 | CFLAGS_GCOV := -fprofile-arcs -ftest-coverage -fno-tree-loop-im $(call cc-disable-warning,maybe-uninitialized,) |
543c37cb | 391 | CFLAGS_KCOV := $(call cc-option,-fsanitize-coverage=trace-pc,) |
1da177e4 | 392 | |
fef4fb4a LO |
393 | # Prefer linux-backports-modules |
394 | ifneq ($(KBUILD_SRC),) | |
395 | ifneq ($(shell if test -e $(KBUILD_OUTPUT)/ubuntu-build; then echo yes; fi),yes) | |
396 | UBUNTUINCLUDE := -I/usr/src/linux-headers-lbm-$(KERNELRELEASE) | |
397 | endif | |
398 | endif | |
1da177e4 | 399 | |
abbf1590 DH |
400 | # Use USERINCLUDE when you must reference the UAPI directories only. |
401 | USERINCLUDE := \ | |
402 | -I$(srctree)/arch/$(hdr-arch)/include/uapi \ | |
3308b285 | 403 | -I$(objtree)/arch/$(hdr-arch)/include/generated/uapi \ |
abbf1590 | 404 | -I$(srctree)/include/uapi \ |
3308b285 | 405 | -I$(objtree)/include/generated/uapi \ |
abbf1590 DH |
406 | -include $(srctree)/include/linux/kconfig.h |
407 | ||
1da177e4 LT |
408 | # Use LINUXINCLUDE when you must reference the include/ directory. |
409 | # Needed to be compatible with the O= option | |
abbf1590 | 410 | LINUXINCLUDE := \ |
fef4fb4a | 411 | $(UBUNTUINCLUDE) \ |
abbf1590 | 412 | -I$(srctree)/arch/$(hdr-arch)/include \ |
3308b285 | 413 | -I$(objtree)/arch/$(hdr-arch)/include/generated \ |
abbf1590 | 414 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ |
f8224f7f MY |
415 | -I$(objtree)/include \ |
416 | $(USERINCLUDE) | |
1da177e4 | 417 | |
fef4fb4a LO |
418 | # UBUNTU: Include our third party driver stuff too |
419 | LINUXINCLUDE += -Iubuntu/include $(if $(KBUILD_SRC),-I$(srctree)/ubuntu/include) | |
420 | ||
d8672b40 | 421 | KBUILD_CPPFLAGS := -D__KERNEL__ |
1da177e4 | 422 | |
a0f97e06 | 423 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
8c97023c | 424 | -fno-strict-aliasing -fno-common -fshort-wchar \ |
a8735821 | 425 | -Werror-implicit-function-declaration \ |
51b97e35 | 426 | -Wno-format-security \ |
c6a38553 BP |
427 | -std=gnu89 $(call cc-option,-fno-PIE) |
428 | ||
a1c48bb1 | 429 | |
80c00ba9 SR |
430 | KBUILD_AFLAGS_KERNEL := |
431 | KBUILD_CFLAGS_KERNEL := | |
c6a38553 | 432 | KBUILD_AFLAGS := -D__ASSEMBLY__ $(call cc-option,-fno-PIE) |
6588169d SR |
433 | KBUILD_AFLAGS_MODULE := -DMODULE |
434 | KBUILD_CFLAGS_MODULE := -DMODULE | |
435 | KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds | |
1da177e4 | 436 | |
f1d28fb0 RZ |
437 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
438 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) | |
cacd54ef | 439 | KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) |
cb58455c | 440 | |
070b98bf | 441 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
80ef88d6 | 442 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
d7f14c66 | 443 | export CPP AR NM STRIP OBJCOPY OBJDUMP HOSTLDFLAGS HOST_LOADLIBES |
011bf125 | 444 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE |
070b98bf | 445 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
1da177e4 | 446 | |
06c5040c | 447 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
5c9a8750 | 448 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KCOV CFLAGS_KASAN CFLAGS_UBSAN |
222d394d | 449 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
36b4777f | 450 | export KBUILD_KMSG_CHECK KMSG_CHECK |
6588169d | 451 | export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
80c00ba9 | 452 | export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
40df759e | 453 | export KBUILD_ARFLAGS |
1da177e4 LT |
454 | |
455 | # When compiling out-of-tree modules, put MODVERDIR in the module | |
456 | # tree rather than in the kernel tree. The kernel tree might | |
457 | # even be read-only. | |
458 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions | |
459 | ||
1da177e4 LT |
460 | # Files to ignore in find ... statements |
461 | ||
ae63b2d7 PB |
462 | export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ |
463 | -name CVS -o -name .pc -o -name .hg -o -name .git \) \ | |
464 | -prune -o | |
450c6076 JJ |
465 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ |
466 | --exclude CVS --exclude .pc --exclude .hg --exclude .git | |
1da177e4 LT |
467 | |
468 | # =========================================================================== | |
469 | # Rules shared between *config targets and build targets | |
470 | ||
312a3d09 | 471 | # Basic helpers built in scripts/basic/ |
4f193362 | 472 | PHONY += scripts_basic |
1da177e4 LT |
473 | scripts_basic: |
474 | $(Q)$(MAKE) $(build)=scripts/basic | |
638adb05 | 475 | $(Q)rm -f .tmp_quiet_recordmcount |
1da177e4 | 476 | |
cd05e6bd JB |
477 | # To avoid any implicit rule to kick in, define an empty command. |
478 | scripts/basic/%: scripts_basic ; | |
479 | ||
4f193362 | 480 | PHONY += outputmakefile |
fd5f0cd6 JB |
481 | # outputmakefile generates a Makefile in the output directory, if using a |
482 | # separate output directory. This allows convenient use of make in the | |
483 | # output directory. | |
1da177e4 | 484 | outputmakefile: |
fd5f0cd6 | 485 | ifneq ($(KBUILD_SRC),) |
92979997 | 486 | $(Q)ln -fsn $(srctree) source |
fd5f0cd6 JB |
487 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
488 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) | |
489 | endif | |
1da177e4 | 490 | |
d8ecc5cd | 491 | # Support for using generic headers in asm-generic |
a9d9a400 MY |
492 | PHONY += asm-generic uapi-asm-generic |
493 | asm-generic: uapi-asm-generic | |
d8ecc5cd | 494 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
3c5994c8 | 495 | src=asm obj=arch/$(SRCARCH)/include/generated/asm |
a9d9a400 | 496 | uapi-asm-generic: |
3c5994c8 CM |
497 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
498 | src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm | |
d8ecc5cd | 499 | |
1da177e4 LT |
500 | # To make sure we do not include .config for any of the *config targets |
501 | # catch them early, and hand them over to scripts/kconfig/Makefile | |
502 | # It is allowed to specify more targets when calling make, including | |
503 | # mixing *config targets and build targets. | |
070b98bf | 504 | # For example 'make oldconfig all'. |
1da177e4 LT |
505 | # Detect when mixed targets is specified, and make a second invocation |
506 | # of make so .config is not included in this case either (for *config). | |
507 | ||
10b63956 | 508 | version_h := include/generated/uapi/linux/version.h |
223c24a7 | 509 | old_version_h := include/linux/version.h |
d183e6f5 | 510 | |
3eb3c740 | 511 | no-dot-config-targets := clean mrproper distclean \ |
fbae4d58 | 512 | cscope gtags TAGS tags help% %docs check% coccicheck \ |
d183e6f5 | 513 | $(version_h) headers_% archheaders archscripts \ |
4aed2fd8 | 514 | kernelversion %src-pkg |
1da177e4 LT |
515 | |
516 | config-targets := 0 | |
517 | mixed-targets := 0 | |
518 | dot-config := 1 | |
519 | ||
520 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
521 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
522 | dot-config := 0 | |
523 | endif | |
524 | endif | |
525 | ||
526 | ifeq ($(KBUILD_EXTMOD),) | |
527 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) | |
528 | config-targets := 1 | |
d0d38cd9 | 529 | ifneq ($(words $(MAKECMDGOALS)),1) |
1da177e4 LT |
530 | mixed-targets := 1 |
531 | endif | |
532 | endif | |
533 | endif | |
312a3d09 | 534 | # install and modules_install need also be processed one by one |
a85a41ed MM |
535 | ifneq ($(filter install,$(MAKECMDGOALS)),) |
536 | ifneq ($(filter modules_install,$(MAKECMDGOALS)),) | |
537 | mixed-targets := 1 | |
538 | endif | |
539 | endif | |
1da177e4 LT |
540 | |
541 | ifeq ($(mixed-targets),1) | |
542 | # =========================================================================== | |
543 | # We're called with mixed targets (*config and build targets). | |
544 | # Handle them one by one. | |
545 | ||
9319f453 MY |
546 | PHONY += $(MAKECMDGOALS) __build_one_by_one |
547 | ||
548 | $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one | |
549 | @: | |
550 | ||
551 | __build_one_by_one: | |
552 | $(Q)set -e; \ | |
553 | for i in $(MAKECMDGOALS); do \ | |
554 | $(MAKE) -f $(srctree)/Makefile $$i; \ | |
555 | done | |
1da177e4 LT |
556 | |
557 | else | |
558 | ifeq ($(config-targets),1) | |
559 | # =========================================================================== | |
560 | # *config targets only - make sure prerequisites are updated, and descend | |
561 | # in scripts/kconfig to make the *config target | |
562 | ||
563 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. | |
564 | # KBUILD_DEFCONFIG may point out an alternative default configuration | |
565 | # used for 'make defconfig' | |
a436bb7b | 566 | include arch/$(SRCARCH)/Makefile |
61bee204 | 567 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
1da177e4 | 568 | |
31110ebb | 569 | config: scripts_basic outputmakefile FORCE |
31110ebb SR |
570 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
571 | ||
572 | %config: scripts_basic outputmakefile FORCE | |
1da177e4 LT |
573 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
574 | ||
575 | else | |
576 | # =========================================================================== | |
577 | # Build targets only - this includes vmlinux, arch specific targets, clean | |
578 | # targets and others. In general all targets except *config targets. | |
579 | ||
580 | ifeq ($(KBUILD_EXTMOD),) | |
581 | # Additional helpers built in scripts/ | |
582 | # Carefully list dependencies so we do not try to build scripts twice | |
070b98bf | 583 | # in parallel |
4f193362 | 584 | PHONY += scripts |
a54292f5 | 585 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ |
6b90bd4b | 586 | asm-generic gcc-plugins |
1da177e4 LT |
587 | $(Q)$(MAKE) $(build)=$(@) |
588 | ||
1da177e4 LT |
589 | # Objects we will link into vmlinux / subdirs we need to visit |
590 | init-y := init/ | |
fef4fb4a | 591 | drivers-y := drivers/ sound/ firmware/ ubuntu/ |
1da177e4 LT |
592 | net-y := net/ |
593 | libs-y := lib/ | |
594 | core-y := usr/ | |
37d9fe47 | 595 | virt-y := virt/ |
1da177e4 LT |
596 | endif # KBUILD_EXTMOD |
597 | ||
598 | ifeq ($(dot-config),1) | |
9ee4e336 SR |
599 | # Read in config |
600 | -include include/config/auto.conf | |
1da177e4 | 601 | |
9ee4e336 | 602 | ifeq ($(KBUILD_EXTMOD),) |
1da177e4 LT |
603 | # Read in dependencies to all Kconfig* files, make sure to run |
604 | # oldconfig if changes are detected. | |
c955ccaf | 605 | -include include/config/auto.conf.cmd |
1da177e4 | 606 | |
1da177e4 | 607 | # To avoid any implicit rule to kick in, define an empty command |
14cdd3c4 | 608 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
1da177e4 | 609 | |
c955ccaf | 610 | # If .config is newer than include/config/auto.conf, someone tinkered |
752625cf | 611 | # with it and forgot to run make oldconfig. |
070b98bf | 612 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
752625cf | 613 | # we execute the config step to be sure to catch updated Kconfig files |
bc081dd6 | 614 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
1da177e4 | 615 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
3041e47e | 616 | else |
264a2683 | 617 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
9ee4e336 SR |
618 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
619 | PHONY += include/config/auto.conf | |
620 | ||
621 | include/config/auto.conf: | |
264a2683 | 622 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
5369f550 MM |
623 | echo >&2; \ |
624 | echo >&2 " ERROR: Kernel configuration is invalid."; \ | |
625 | echo >&2 " include/generated/autoconf.h or $@ are missing.";\ | |
626 | echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ | |
627 | echo >&2 ; \ | |
9ee4e336 SR |
628 | /bin/false) |
629 | ||
630 | endif # KBUILD_EXTMOD | |
c955ccaf | 631 | |
1da177e4 LT |
632 | else |
633 | # Dummy target needed, because used as prerequisite | |
c955ccaf | 634 | include/config/auto.conf: ; |
9ee4e336 | 635 | endif # $(dot-config) |
1da177e4 | 636 | |
86556392 NP |
637 | # For the kernel to actually contain only the needed exported symbols, |
638 | # we have to build modules as well to determine what those symbols are. | |
639 | # (this can be evaluated only once include/config/auto.conf has been included) | |
640 | ifdef CONFIG_TRIM_UNUSED_KSYMS | |
641 | KBUILD_MODULES := 1 | |
642 | endif | |
643 | ||
1da177e4 LT |
644 | # The all: target is the default when no target is given on the |
645 | # command line. | |
646 | # This allow a user to issue only 'make' to build a kernel including modules | |
c8447161 | 647 | # Defaults to vmlinux, but the arch makefile usually adds further targets |
1da177e4 LT |
648 | all: vmlinux |
649 | ||
94ecfe0e SB |
650 | # force no-pie for distro compilers that enable pie by default |
651 | KBUILD_CFLAGS += $(call cc-option, -fno-pie) | |
652 | KBUILD_CFLAGS += $(call cc-option, -no-pie) | |
653 | KBUILD_AFLAGS += $(call cc-option, -fno-pie) | |
654 | KBUILD_CPPFLAGS += $(call cc-option, -fno-pie) | |
655 | ||
6dd3f13e MM |
656 | # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default |
657 | # values of the respective KBUILD_* variables | |
658 | ARCH_CPPFLAGS := | |
659 | ARCH_AFLAGS := | |
660 | ARCH_CFLAGS := | |
a436bb7b | 661 | include arch/$(SRCARCH)/Makefile |
a1c48bb1 GU |
662 | |
663 | KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) | |
ef6000b4 | 664 | KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) |
bd664f6b LT |
665 | KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) |
666 | KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) | |
667 | KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context) | |
a1c48bb1 | 668 | |
1da177e4 | 669 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
6748cb3c BW |
670 | KBUILD_CFLAGS += $(call cc-option,-Oz,-Os) |
671 | KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) | |
1da177e4 | 672 | else |
815eb71e | 673 | ifdef CONFIG_PROFILE_ALL_BRANCHES |
a76bcf55 | 674 | KBUILD_CFLAGS += -O2 $(call cc-disable-warning,maybe-uninitialized,) |
815eb71e AB |
675 | else |
676 | KBUILD_CFLAGS += -O2 | |
677 | endif | |
1da177e4 LT |
678 | endif |
679 | ||
a76bcf55 AB |
680 | KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, \ |
681 | $(call cc-disable-warning,maybe-uninitialized,)) | |
682 | ||
69102311 JK |
683 | # Tell gcc to never replace conditional load with a non-conditional one |
684 | KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) | |
685 | ||
7292ae3d GFM |
686 | # check for 'asm goto' |
687 | ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y) | |
688 | KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO | |
689 | KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO | |
690 | endif | |
691 | ||
6b90bd4b ER |
692 | include scripts/Makefile.gcc-plugins |
693 | ||
1873e870 AK |
694 | ifdef CONFIG_READABLE_ASM |
695 | # Disable optimizations that make assembler listings hard to read. | |
696 | # reorder blocks reorders the control in the function | |
697 | # ipa clone creates specialized cloned functions | |
698 | # partial inlining inlines only parts of functions | |
699 | KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ | |
700 | $(call cc-option,-fno-ipa-cp-clone,) \ | |
701 | $(call cc-option,-fno-partial-inlining) | |
702 | endif | |
703 | ||
08f67461 | 704 | ifneq ($(CONFIG_FRAME_WARN),0) |
35bb5b1e AK |
705 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
706 | endif | |
707 | ||
c965b105 KC |
708 | # This selects the stack protector compiler flag. Testing it is delayed |
709 | # until after .config has been reprocessed, in the prepare-compiler-check | |
710 | # target. | |
8779657d | 711 | ifdef CONFIG_CC_STACKPROTECTOR_REGULAR |
19952a92 | 712 | stackp-flag := -fstack-protector |
c965b105 | 713 | stackp-name := REGULAR |
6c15b327 JB |
714 | else |
715 | ifdef CONFIG_CC_STACKPROTECTOR_STRONG | |
8779657d | 716 | stackp-flag := -fstack-protector-strong |
c965b105 | 717 | stackp-name := STRONG |
19952a92 KC |
718 | else |
719 | # Force off for distro compilers that enable stack protector by default. | |
720 | stackp-flag := $(call cc-option, -fno-stack-protector) | |
5d707e9c | 721 | endif |
6c15b327 | 722 | endif |
c965b105 KC |
723 | # Find arch-specific stack protector compiler sanity-checking script. |
724 | ifdef CONFIG_CC_STACKPROTECTOR | |
228d96c6 KC |
725 | stackp-path := $(srctree)/scripts/gcc-$(SRCARCH)_$(BITS)-has-stack-protector.sh |
726 | stackp-check := $(wildcard $(stackp-path)) | |
c965b105 | 727 | endif |
19952a92 | 728 | KBUILD_CFLAGS += $(stackp-flag) |
e06b8b98 | 729 | |
5631d9c4 | 730 | ifeq ($(cc-name),clang) |
785f11aa BW |
731 | ifneq ($(CROSS_COMPILE),) |
732 | CLANG_TARGET := -target $(notdir $(CROSS_COMPILE:%-=%)) | |
733 | GCC_TOOLCHAIN := $(realpath $(dir $(shell which $(LD)))/..) | |
734 | endif | |
735 | ifneq ($(GCC_TOOLCHAIN),) | |
736 | CLANG_GCC_TC := -gcc-toolchain $(GCC_TOOLCHAIN) | |
737 | endif | |
738 | KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) | |
739 | KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) | |
61163efa | 740 | KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) |
61163efa BW |
741 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) |
742 | KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) | |
743 | KBUILD_CFLAGS += $(call cc-disable-warning, gnu) | |
bfb38988 | 744 | KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) |
61163efa BW |
745 | # Quiet clang warning: comparison of unsigned expression < 0 is always false |
746 | KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) | |
747 | # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the | |
748 | # source of a reference will be _MergedGlobals and not on of the whitelisted names. | |
749 | # See modpost pattern 2 | |
750 | KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) | |
26ea6bb1 | 751 | KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) |
a37c45cd MD |
752 | KBUILD_CFLAGS += $(call cc-option, -no-integrated-as) |
753 | KBUILD_AFLAGS += $(call cc-option, -no-integrated-as) | |
61163efa BW |
754 | else |
755 | ||
c9c6837d | 756 | # These warnings generated too much noise in a regular build. |
35288e30 | 757 | # Use make W=1 to enable them (see scripts/Makefile.extrawarn) |
8417da6f | 758 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) |
c9c6837d | 759 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) |
61163efa | 760 | endif |
af0e5d56 | 761 | |
1da177e4 | 762 | ifdef CONFIG_FRAME_POINTER |
a0f97e06 | 763 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
1da177e4 | 764 | else |
7e9501fd RV |
765 | # Some targets (ARM with Thumb2, for example), can't be built with frame |
766 | # pointers. For those, we don't have FUNCTION_TRACER automatically | |
767 | # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is | |
768 | # incompatible with -fomit-frame-pointer with current GCC, so we don't use | |
769 | # -fomit-frame-pointer with FUNCTION_TRACER. | |
770 | ifndef CONFIG_FUNCTION_TRACER | |
a0f97e06 | 771 | KBUILD_CFLAGS += -fomit-frame-pointer |
1da177e4 | 772 | endif |
7e9501fd | 773 | endif |
1da177e4 | 774 | |
2062afb4 LT |
775 | KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) |
776 | ||
1da177e4 | 777 | ifdef CONFIG_DEBUG_INFO |
866ced95 AK |
778 | ifdef CONFIG_DEBUG_INFO_SPLIT |
779 | KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) | |
780 | else | |
a0f97e06 | 781 | KBUILD_CFLAGS += -g |
866ced95 | 782 | endif |
2288328c | 783 | KBUILD_AFLAGS += -Wa,-gdwarf-2 |
1da177e4 | 784 | endif |
bfaf2dd3 AK |
785 | ifdef CONFIG_DEBUG_INFO_DWARF4 |
786 | KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) | |
787 | endif | |
1da177e4 | 788 | |
d6f4ceb7 | 789 | ifdef CONFIG_DEBUG_INFO_REDUCED |
e82c4bb8 AK |
790 | KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ |
791 | $(call cc-option,-fno-var-tracking) | |
d6f4ceb7 AK |
792 | endif |
793 | ||
606576ce | 794 | ifdef CONFIG_FUNCTION_TRACER |
c0a80c0c HC |
795 | ifndef CC_FLAGS_FTRACE |
796 | CC_FLAGS_FTRACE := -pg | |
797 | endif | |
798 | export CC_FLAGS_FTRACE | |
a2546fae SR |
799 | ifdef CONFIG_HAVE_FENTRY |
800 | CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) | |
801 | endif | |
c0a80c0c | 802 | KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY) |
a2546fae | 803 | KBUILD_AFLAGS += $(CC_USING_FENTRY) |
72441cb1 | 804 | ifdef CONFIG_DYNAMIC_FTRACE |
cf4db259 | 805 | ifdef CONFIG_HAVE_C_RECORDMCOUNT |
72441cb1 SR |
806 | BUILD_C_RECORDMCOUNT := y |
807 | export BUILD_C_RECORDMCOUNT | |
808 | endif | |
809 | endif | |
16444a8a ACM |
810 | endif |
811 | ||
91341d4b SR |
812 | # We trigger additional mismatches with less inlining |
813 | ifdef CONFIG_DEBUG_SECTION_MISMATCH | |
814 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) | |
815 | endif | |
816 | ||
90ad4052 MY |
817 | ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION |
818 | KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,) | |
819 | KBUILD_CFLAGS += $(call cc-option,-fdata-sections,) | |
820 | endif | |
821 | ||
e8e69931 | 822 | # arch Makefile may override CC so keep this after arch Makefile is included |
e8f5bdb0 | 823 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
e8e69931 SR |
824 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
825 | ||
1da177e4 | 826 | # warn about C99 declaration after statement |
a0f97e06 | 827 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
1da177e4 | 828 | |
070b98bf | 829 | # disable pointer signed / unsigned warnings in gcc 4.0 |
8417da6f | 830 | KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
1da177e4 | 831 | |
fe8d0a41 | 832 | # disable invalid "can't wrap" optimizations for signed / pointers |
a137802e | 833 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
d0115552 | 834 | |
8f7f5c9f AK |
835 | # conserve stack if available |
836 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) | |
837 | ||
80970472 ST |
838 | # disallow errors like 'EXPORT_GPL(foo);' with missing header |
839 | KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) | |
840 | ||
841 | # require functions to have arguments in prototypes, not empty 'int foo()' | |
842 | KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) | |
843 | ||
fe7c36c7 JT |
844 | # Prohibit date/time macros, which would make the build non-deterministic |
845 | KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) | |
846 | ||
ea8daa7b DW |
847 | # enforce correct pointer usage |
848 | KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) | |
849 | ||
c834f0e8 KC |
850 | # Require designated initializers for all marked structures |
851 | KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) | |
852 | ||
40df759e MM |
853 | # use the deterministic mode of AR if available |
854 | KBUILD_ARFLAGS := $(call ar-option,D) | |
855 | ||
a436bb7b MY |
856 | include scripts/Makefile.kasan |
857 | include scripts/Makefile.extrawarn | |
c6d30853 | 858 | include scripts/Makefile.ubsan |
a86fe353 | 859 | |
61754c18 MM |
860 | # Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the |
861 | # last assignments | |
862 | KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) | |
863 | KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) | |
864 | KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) | |
52bcc330 | 865 | |
18991197 | 866 | # Use --build-id when available. |
bd74370b | 867 | LDFLAGS_BUILD_ID := $(patsubst -Wl$(comma)%,%,\ |
f86fd306 | 868 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
6588169d | 869 | KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
18991197 RM |
870 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
871 | ||
b67067f1 NP |
872 | ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION |
873 | LDFLAGS_vmlinux += $(call ld-option, --gc-sections,) | |
874 | endif | |
875 | ||
5d7d18f5 | 876 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
d79a2719 | 877 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
5d7d18f5 DH |
878 | endif |
879 | ||
1da177e4 | 880 | # Default kernel image to build when no specific target is given. |
070b98bf | 881 | # KBUILD_IMAGE may be overruled on the command line or |
1da177e4 LT |
882 | # set in the environment |
883 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over | |
884 | # this default value | |
885 | export KBUILD_IMAGE ?= vmlinux | |
886 | ||
887 | # | |
888 | # INSTALL_PATH specifies where to place the updated kernel and system map | |
889 | # images. Default is /boot, but you can set it to other values | |
890 | export INSTALL_PATH ?= /boot | |
891 | ||
f4d4ffc0 JC |
892 | # |
893 | # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. | |
894 | # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as | |
895 | # an argument if needed. Otherwise it defaults to the kernel install path | |
896 | # | |
897 | export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) | |
898 | ||
1da177e4 LT |
899 | # |
900 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory | |
901 | # relocations required by build roots. This is not defined in the | |
070b98bf | 902 | # makefile but the argument can be passed to make if needed. |
1da177e4 LT |
903 | # |
904 | ||
df9df036 | 905 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4 LT |
906 | export MODLIB |
907 | ||
ac031f26 | 908 | # |
3fbb43df MY |
909 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
910 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then | |
911 | # the default option --strip-debug will be used. Otherwise, | |
912 | # INSTALL_MOD_STRIP value will be used as the options to the strip command. | |
2ea03891 | 913 | |
ac031f26 TT |
914 | ifdef INSTALL_MOD_STRIP |
915 | ifeq ($(INSTALL_MOD_STRIP),1) | |
2ea03891 | 916 | mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26 | 917 | else |
2ea03891 | 918 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
ac031f26 TT |
919 | endif # INSTALL_MOD_STRIP=1 |
920 | else | |
2ea03891 | 921 | mod_strip_cmd = true |
ac031f26 TT |
922 | endif # INSTALL_MOD_STRIP |
923 | export mod_strip_cmd | |
924 | ||
beb50df3 BJ |
925 | # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed |
926 | # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP | |
927 | # or CONFIG_MODULE_COMPRESS_XZ. | |
928 | ||
929 | mod_compress_cmd = true | |
930 | ifdef CONFIG_MODULE_COMPRESS | |
931 | ifdef CONFIG_MODULE_COMPRESS_GZIP | |
3d1450d5 | 932 | mod_compress_cmd = gzip -n -f |
beb50df3 BJ |
933 | endif # CONFIG_MODULE_COMPRESS_GZIP |
934 | ifdef CONFIG_MODULE_COMPRESS_XZ | |
3d1450d5 | 935 | mod_compress_cmd = xz -f |
beb50df3 BJ |
936 | endif # CONFIG_MODULE_COMPRESS_XZ |
937 | endif # CONFIG_MODULE_COMPRESS | |
938 | export mod_compress_cmd | |
939 | ||
1bf49dd4 | 940 | # Select initial ramdisk compression format, default is gzip(1). |
941 | # This shall be used by the dracut(8) tool while creating an initramfs image. | |
942 | # | |
7ac18156 JB |
943 | INITRD_COMPRESS-y := gzip |
944 | INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 | |
945 | INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma | |
946 | INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz | |
947 | INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo | |
948 | INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 | |
b7000ade LT |
949 | # do not export INITRD_COMPRESS, since we didn't actually |
950 | # choose a sane default compression above. | |
951 | # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) | |
1da177e4 | 952 | |
d9d8d7ed | 953 | ifdef CONFIG_MODULE_SIG_ALL |
3ee550f1 DW |
954 | $(eval $(call config_filename,MODULE_SIG_KEY)) |
955 | ||
956 | mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 | |
e2a666d5 RR |
957 | else |
958 | mod_sign_cmd = true | |
959 | endif | |
960 | export mod_sign_cmd | |
961 | ||
9f0c18ae JP |
962 | ifdef CONFIG_STACK_VALIDATION |
963 | has_libelf := $(call try-run,\ | |
964 | echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf -,1,0) | |
965 | ifeq ($(has_libelf),1) | |
966 | objtool_target := tools/objtool FORCE | |
967 | else | |
27ab2a24 JP |
968 | ifdef CONFIG_UNWINDER_ORC |
969 | $(error "Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel") | |
c413466a JP |
970 | else |
971 | $(warning "Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel") | |
972 | endif | |
9f0c18ae JP |
973 | SKIP_STACK_VALIDATION := 1 |
974 | export SKIP_STACK_VALIDATION | |
975 | endif | |
976 | endif | |
977 | ||
e2a666d5 | 978 | |
1da177e4 | 979 | ifeq ($(KBUILD_EXTMOD),) |
cfc411e7 | 980 | core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4 LT |
981 | |
982 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ | |
983 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ | |
37d9fe47 | 984 | $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) |
1da177e4 LT |
985 | |
986 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ | |
37d9fe47 | 987 | $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-)))) |
1da177e4 LT |
988 | |
989 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) | |
990 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) | |
991 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) | |
992 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) | |
993 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) | |
3a166fc2 | 994 | libs-y2 := $(filter-out %.a, $(patsubst %/, %/built-in.o, $(libs-y))) |
37d9fe47 | 995 | virt-y := $(patsubst %/, %/built-in.o, $(virt-y)) |
1da177e4 | 996 | |
1f2bfbd0 | 997 | # Externally visible symbols (used by link-vmlinux.sh) |
95698570 | 998 | export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) |
3a166fc2 NP |
999 | export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y2) $(drivers-y) $(net-y) $(virt-y) |
1000 | export KBUILD_VMLINUX_LIBS := $(libs-y1) | |
95698570 | 1001 | export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds |
1f2bfbd0 | 1002 | export LDFLAGS_vmlinux |
312a3d09 | 1003 | # used by scripts/package/Makefile |
37d9fe47 | 1004 | export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools) |
9bb48247 | 1005 | |
3a166fc2 | 1006 | vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) $(KBUILD_VMLINUX_LIBS) |
1da177e4 | 1007 | |
2441e78b NP |
1008 | # Include targets which we want to execute sequentially if the rest of the |
1009 | # kernel build went well. If CONFIG_TRIM_UNUSED_KSYMS is set, this might be | |
1010 | # evaluated more than once. | |
1011 | PHONY += vmlinux_prereq | |
1012 | vmlinux_prereq: $(vmlinux-deps) FORCE | |
0f836e5f | 1013 | ifdef CONFIG_HEADERS_CHECK |
0e7af8d0 | 1014 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
267c4025 | 1015 | endif |
3ee7b3fa JK |
1016 | ifdef CONFIG_GDB_SCRIPTS |
1017 | $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py | |
0f836e5f | 1018 | endif |
2441e78b | 1019 | ifdef CONFIG_TRIM_UNUSED_KSYMS |
ba79d401 | 1020 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ |
86556392 | 1021 | "$(MAKE) -f $(srctree)/Makefile vmlinux" |
2441e78b | 1022 | endif |
23121ca2 NP |
1023 | |
1024 | # standalone target for easier testing | |
1025 | include/generated/autoksyms.h: FORCE | |
ba79d401 | 1026 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh true |
23121ca2 | 1027 | |
fbe6e37d NP |
1028 | ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) |
1029 | ||
1030 | # Final link of vmlinux with optional arch pass after final link | |
312a3d09 C |
1031 | cmd_link-vmlinux = \ |
1032 | $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) ; \ | |
fbe6e37d | 1033 | $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) |
2441e78b | 1034 | |
edf69470 | 1035 | vmlinux: scripts/link-vmlinux.sh vmlinux_prereq $(vmlinux-deps) FORCE |
1f2bfbd0 | 1036 | +$(call if_changed,link-vmlinux) |
741f98fe | 1037 | |
dd92478a NP |
1038 | # Build samples along the rest of the kernel |
1039 | ifdef CONFIG_SAMPLES | |
1040 | vmlinux-dirs += samples | |
1041 | endif | |
1042 | ||
38385f8f | 1043 | # The actual objects are generated when descending, |
1da177e4 | 1044 | # make sure no implicit rule kicks in |
1f2bfbd0 | 1045 | $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
1da177e4 LT |
1046 | |
1047 | # Handle descending into subdirectories listed in $(vmlinux-dirs) | |
1048 | # Preset locale variables to speed up the build process. Limit locale | |
1049 | # tweaks to this spot to avoid wrong language settings when running | |
1050 | # make menuconfig etc. | |
1051 | # Error messages still appears in the original language | |
1052 | ||
4f193362 | 1053 | PHONY += $(vmlinux-dirs) |
5bb78269 | 1054 | $(vmlinux-dirs): prepare scripts |
1da177e4 LT |
1055 | $(Q)$(MAKE) $(build)=$@ |
1056 | ||
0d0e7718 MM |
1057 | define filechk_kernel.release |
1058 | echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" | |
1059 | endef | |
1060 | ||
83a35e36 | 1061 | # Store (new) KERNELRELEASE string in include/config/kernel.release |
f1d28fb0 | 1062 | include/config/kernel.release: include/config/auto.conf FORCE |
0d0e7718 | 1063 | $(call filechk,kernel.release) |
cb58455c SR |
1064 | |
1065 | ||
1da177e4 | 1066 | # Things we need to do before we recursively start building the kernel |
5bb78269 SR |
1067 | # or the modules are listed in "prepare". |
1068 | # A multi level approach is used. prepareN is processed before prepareN-1. | |
1069 | # archprepare is used in arch Makefiles and when processed asm symlink, | |
1070 | # version.h and scripts_basic is processed / created. | |
1da177e4 | 1071 | |
5bb78269 | 1072 | # Listed in dependency order |
4f193362 | 1073 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb78269 | 1074 | |
86feeaa8 | 1075 | # prepare3 is used to check if we are building in a separate output directory, |
1da177e4 LT |
1076 | # and if so do: |
1077 | # 1) Check that make has not been executed in the kernel src $(srctree) | |
f1d28fb0 | 1078 | prepare3: include/config/kernel.release |
1da177e4 | 1079 | ifneq ($(KBUILD_SRC),) |
fd54f502 | 1080 | @$(kecho) ' Using $(srctree) as source for kernel' |
c955ccaf | 1081 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
5369f550 MM |
1082 | echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ |
1083 | echo >&2 " in the '$(srctree)' directory.";\ | |
1da177e4 LT |
1084 | /bin/false; \ |
1085 | fi; | |
1da177e4 LT |
1086 | endif |
1087 | ||
c965b105 KC |
1088 | # prepare2 creates a makefile if using a separate output directory. |
1089 | # From this point forward, .config has been reprocessed, so any rules | |
1090 | # that need to depend on updated CONFIG_* values can be checked here. | |
1091 | prepare2: prepare3 prepare-compiler-check outputmakefile asm-generic | |
1da177e4 | 1092 | |
d183e6f5 | 1093 | prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ |
f7f16b77 | 1094 | include/config/auto.conf |
7bb9d092 | 1095 | $(cmd_crmodverdir) |
1da177e4 | 1096 | |
6520fe55 | 1097 | archprepare: archheaders archscripts prepare1 scripts_basic |
5bb78269 | 1098 | |
6b90bd4b | 1099 | prepare0: archprepare gcc-plugins |
8d36a623 | 1100 | $(Q)$(MAKE) $(build)=. |
86feeaa8 | 1101 | |
1da177e4 | 1102 | # All the preparing.. |
b9ab5ebb JP |
1103 | prepare: prepare0 prepare-objtool |
1104 | ||
1105 | PHONY += prepare-objtool | |
3b27a0c8 | 1106 | prepare-objtool: $(objtool_target) |
1da177e4 | 1107 | |
c965b105 KC |
1108 | # Check for CONFIG flags that require compiler support. Abort the build |
1109 | # after .config has been processed, but before the kernel build starts. | |
1110 | # | |
1111 | # For security-sensitive CONFIG options, we don't want to fallback and/or | |
1112 | # silently change which compiler flags will be used, since that leads to | |
1113 | # producing kernels with different security feature characteristics | |
1114 | # depending on the compiler used. (For example, "But I selected | |
1115 | # CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") | |
1116 | PHONY += prepare-compiler-check | |
1117 | prepare-compiler-check: FORCE | |
1118 | # Make sure compiler supports requested stack protector flag. | |
1119 | ifdef stackp-name | |
1120 | ifeq ($(call cc-option, $(stackp-flag)),) | |
1121 | @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ | |
1122 | $(stackp-flag) not supported by compiler >&2 && exit 1 | |
1123 | endif | |
1124 | endif | |
1125 | # Make sure compiler does not have buggy stack-protector support. | |
1126 | ifdef stackp-check | |
1127 | ifneq ($(shell $(CONFIG_SHELL) $(stackp-check) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y) | |
1128 | @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ | |
1129 | $(stackp-flag) available but compiler is broken >&2 && exit 1 | |
1130 | endif | |
1131 | endif | |
1132 | @: | |
1133 | ||
1da177e4 LT |
1134 | # Generate some files |
1135 | # --------------------------------------------------------------------------- | |
1136 | ||
1137 | # KERNELRELEASE can change from a few different places, meaning version.h | |
1138 | # needs to be updated, so this check is forced on all builds | |
1139 | ||
1140 | uts_len := 64 | |
63104eec SR |
1141 | define filechk_utsrelease.h |
1142 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ | |
1143 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ | |
1144 | exit 1; \ | |
1145 | fi; \ | |
1146 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) | |
1147 | endef | |
1da177e4 LT |
1148 | |
1149 | define filechk_version.h | |
450c6076 JJ |
1150 | (echo \#define LINUX_VERSION_CODE $(shell \ |
1151 | expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ | |
63104eec | 1152 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
1da177e4 LT |
1153 | endef |
1154 | ||
d183e6f5 | 1155 | $(version_h): $(srctree)/Makefile FORCE |
1da177e4 | 1156 | $(call filechk,version.h) |
223c24a7 | 1157 | $(Q)rm -f $(old_version_h) |
1da177e4 | 1158 | |
273b281f | 1159 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
63104eec SR |
1160 | $(call filechk,utsrelease.h) |
1161 | ||
179efcb4 VN |
1162 | PHONY += headerdep |
1163 | headerdep: | |
9663d989 PF |
1164 | $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ |
1165 | $(srctree)/scripts/headerdep.pl -I$(srctree)/include | |
179efcb4 | 1166 | |
88ecf814 DW |
1167 | # --------------------------------------------------------------------------- |
1168 | # Firmware install | |
1169 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware | |
1170 | export INSTALL_FW_PATH | |
1171 | ||
1172 | PHONY += firmware_install | |
2e8d696b | 1173 | firmware_install: |
88ecf814 DW |
1174 | @mkdir -p $(objtree)/firmware |
1175 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install | |
1176 | ||
8d730cfb DW |
1177 | # --------------------------------------------------------------------------- |
1178 | # Kernel headers | |
8d730cfb | 1179 | |
e6883b18 SR |
1180 | #Default location for installed headers |
1181 | export INSTALL_HDR_PATH = $(objtree)/usr | |
6d716275 | 1182 | |
0f042eea | 1183 | # If we do an all arch process set dst to include/arch-$(hdr-arch) |
61562f98 | 1184 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/arch-$(hdr-arch), dst=include) |
e6883b18 | 1185 | |
052ad274 PA |
1186 | PHONY += archheaders |
1187 | archheaders: | |
1188 | ||
6520fe55 PA |
1189 | PHONY += archscripts |
1190 | archscripts: | |
1191 | ||
e6883b18 | 1192 | PHONY += __headers |
a9d9a400 | 1193 | __headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts |
e1b702cf | 1194 | $(Q)$(MAKE) $(build)=scripts build_unifdef |
e6883b18 SR |
1195 | |
1196 | PHONY += headers_install_all | |
2fb9b1bd SR |
1197 | headers_install_all: |
1198 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install | |
6d716275 | 1199 | |
8d730cfb | 1200 | PHONY += headers_install |
e6883b18 | 1201 | headers_install: __headers |
10b63956 DH |
1202 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ |
1203 | $(error Headers not exportable for the $(SRCARCH) architecture)) | |
a8ff49a1 | 1204 | $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include |
61562f98 | 1205 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi $(hdr-dst) |
abe9ba50 | 1206 | $(Q)$(MAKE) $(hdr-inst)=ubuntu/include dst=include oldheaders= |
8d730cfb | 1207 | |
1f85712e MF |
1208 | PHONY += headers_check_all |
1209 | headers_check_all: headers_install_all | |
2fb9b1bd | 1210 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
1f85712e | 1211 | |
68475359 DW |
1212 | PHONY += headers_check |
1213 | headers_check: headers_install | |
a8ff49a1 | 1214 | $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1 |
05d8cba4 | 1215 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi $(hdr-dst) HDRCHECK=1 |
abe9ba50 | 1216 | $(Q)$(MAKE) $(hdr-inst)=ubuntu/include dst=include oldheaders= HDRCHECK=1 |
68475359 | 1217 | |
5a5da78b SK |
1218 | # --------------------------------------------------------------------------- |
1219 | # Kernel selftest | |
1220 | ||
1221 | PHONY += kselftest | |
1222 | kselftest: | |
1223 | $(Q)$(MAKE) -C tools/testing/selftests run_tests | |
1224 | ||
801d2e9f | 1225 | PHONY += kselftest-clean |
dcb825a9 WL |
1226 | kselftest-clean: |
1227 | $(Q)$(MAKE) -C tools/testing/selftests clean | |
1228 | ||
3d6dee7a BJZ |
1229 | PHONY += kselftest-merge |
1230 | kselftest-merge: | |
1231 | $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) | |
1232 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ | |
1233 | -m $(objtree)/.config \ | |
1234 | $(srctree)/tools/testing/selftests/*/config | |
1235 | +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig | |
1236 | ||
1da177e4 LT |
1237 | # --------------------------------------------------------------------------- |
1238 | # Modules | |
1239 | ||
1240 | ifdef CONFIG_MODULES | |
1241 | ||
070b98bf | 1242 | # By default, build modules as well |
1da177e4 | 1243 | |
73d1393e | 1244 | all: modules |
1da177e4 | 1245 | |
3fbb43df | 1246 | # Build modules |
551559e1 | 1247 | # |
3fbb43df MY |
1248 | # A module can be listed more than once in obj-m resulting in |
1249 | # duplicate lines in modules.order files. Those are removed | |
1250 | # using awk while concatenating to the final file. | |
1da177e4 | 1251 | |
4f193362 | 1252 | PHONY += modules |
2da30e70 | 1253 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
551559e1 | 1254 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
fd54f502 | 1255 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1256 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
44463f7d | 1257 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
1da177e4 | 1258 | |
a6c36632 MM |
1259 | modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
1260 | $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin | |
1261 | ||
73d1393e | 1262 | %/modules.builtin: include/config/auto.conf |
a6c36632 MM |
1263 | $(Q)$(MAKE) $(modbuiltin)=$* |
1264 | ||
1da177e4 LT |
1265 | |
1266 | # Target to prepare building external modules | |
4f193362 | 1267 | PHONY += modules_prepare |
5bb78269 | 1268 | modules_prepare: prepare scripts |
1da177e4 LT |
1269 | |
1270 | # Target to install modules | |
4f193362 | 1271 | PHONY += modules_install |
1da177e4 LT |
1272 | modules_install: _modinst_ _modinst_post |
1273 | ||
4f193362 | 1274 | PHONY += _modinst_ |
2da30e70 | 1275 | _modinst_: |
1da177e4 LT |
1276 | @rm -rf $(MODLIB)/kernel |
1277 | @rm -f $(MODLIB)/source | |
1278 | @mkdir -p $(MODLIB)/kernel | |
890676c6 | 1279 | @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source |
1da177e4 LT |
1280 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
1281 | rm -f $(MODLIB)/build ; \ | |
7e1c0477 | 1282 | ln -s $(CURDIR) $(MODLIB)/build ; \ |
1da177e4 | 1283 | fi |
551559e1 | 1284 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
bc081dd6 | 1285 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
b805aa0e | 1286 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1287 | |
50a8ec31 | 1288 | # This depmod is only for convenience to give the initial |
1da177e4 LT |
1289 | # boot a modules.dep even before / is mounted read-write. However the |
1290 | # boot script depmod is the master version. | |
4f193362 | 1291 | PHONY += _modinst_post |
6d128e1e | 1292 | _modinst_post: _modinst_ |
88ecf814 | 1293 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
50a8ec31 | 1294 | $(call cmd,depmod) |
1da177e4 | 1295 | |
d890f510 JB |
1296 | ifeq ($(CONFIG_MODULE_SIG), y) |
1297 | PHONY += modules_sign | |
1298 | modules_sign: | |
1299 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign | |
1300 | endif | |
1301 | ||
1da177e4 LT |
1302 | else # CONFIG_MODULES |
1303 | ||
1304 | # Modules not configured | |
1305 | # --------------------------------------------------------------------------- | |
1306 | ||
612e47ce MY |
1307 | PHONY += modules modules_install |
1308 | modules modules_install: | |
5369f550 MM |
1309 | @echo >&2 |
1310 | @echo >&2 "The present kernel configuration has modules disabled." | |
1311 | @echo >&2 "Type 'make config' and enable loadable module support." | |
1312 | @echo >&2 "Then build a kernel with module support enabled." | |
1313 | @echo >&2 | |
1da177e4 LT |
1314 | @exit 1 |
1315 | ||
1316 | endif # CONFIG_MODULES | |
1317 | ||
1da177e4 LT |
1318 | ### |
1319 | # Cleaning is done on three levels. | |
1320 | # make clean Delete most generated files | |
1321 | # Leave enough to build external modules | |
1322 | # make mrproper Delete the current configuration, and all generated files | |
1323 | # make distclean Remove editor backup files, patch leftover files and the like | |
1324 | ||
1325 | # Directories & files removed with 'make clean' | |
1326 | CLEAN_DIRS += $(MODVERDIR) | |
1da177e4 LT |
1327 | |
1328 | # Directories & files removed with 'make mrproper' | |
d8ecc5cd | 1329 | MRPROPER_DIRS += include/config usr/include include/generated \ |
3fbb43df | 1330 | arch/*/include/generated .tmp_objdiff |
c22bd32c | 1331 | MRPROPER_FILES += .config .config.old .version .old_version \ |
d5b71936 | 1332 | Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ |
fb117949 DW |
1333 | signing_key.pem signing_key.priv signing_key.x509 \ |
1334 | x509.genkey extra_certificates signing_key.x509.keyid \ | |
3ee7b3fa | 1335 | signing_key.x509.signer vmlinux-gdb.py |
1da177e4 LT |
1336 | |
1337 | # clean - Delete most, but leave enough to build external modules | |
1338 | # | |
1339 | clean: rm-dirs := $(CLEAN_DIRS) | |
1340 | clean: rm-files := $(CLEAN_FILES) | |
fb68d4be | 1341 | clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) |
1da177e4 | 1342 | |
bd1ee804 | 1343 | PHONY += $(clean-dirs) clean archclean vmlinuxclean |
1da177e4 LT |
1344 | $(clean-dirs): |
1345 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1346 | ||
bd1ee804 PM |
1347 | vmlinuxclean: |
1348 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean | |
fbe6e37d | 1349 | $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) |
bd1ee804 PM |
1350 | |
1351 | clean: archclean vmlinuxclean | |
1da177e4 LT |
1352 | |
1353 | # mrproper - Delete all generated files, including .config | |
1354 | # | |
1355 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) | |
1356 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) | |
cb43fb57 | 1357 | mrproper-dirs := $(addprefix _mrproper_,scripts) |
1da177e4 | 1358 | |
4f193362 | 1359 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4 LT |
1360 | $(mrproper-dirs): |
1361 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) | |
1362 | ||
1363 | mrproper: clean archmrproper $(mrproper-dirs) | |
1364 | $(call cmd,rmdirs) | |
1365 | $(call cmd,rmfiles) | |
1366 | ||
1367 | # distclean | |
1368 | # | |
4f193362 | 1369 | PHONY += distclean |
1da177e4 LT |
1370 | |
1371 | distclean: mrproper | |
1372 | @find $(srctree) $(RCS_FIND_IGNORE) \ | |
070b98bf | 1373 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
f78271df MY |
1374 | -o -name '*.bak' -o -name '#*#' -o -name '*%' \ |
1375 | -o -name 'core' \) \ | |
1da177e4 LT |
1376 | -type f -print | xargs rm -f |
1377 | ||
1378 | ||
1379 | # Packaging of the kernel to various formats | |
1380 | # --------------------------------------------------------------------------- | |
1381 | # rpm target kept for backward compatibility | |
c79624c1 | 1382 | package-dir := scripts/package |
1da177e4 | 1383 | |
bafb6747 ACM |
1384 | %src-pkg: FORCE |
1385 | $(Q)$(MAKE) $(build)=$(package-dir) $@ | |
031ecc6d | 1386 | %pkg: include/config/kernel.release FORCE |
6c2133e1 | 1387 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6d | 1388 | rpm: include/config/kernel.release FORCE |
6c2133e1 | 1389 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4 LT |
1390 | |
1391 | ||
1392 | # Brief documentation of the typical targets used | |
1393 | # --------------------------------------------------------------------------- | |
1394 | ||
5dffbe81 | 1395 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
a1e7b7bb | 1396 | boards := $(sort $(notdir $(boards))) |
5dffbe81 SB |
1397 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
1398 | board-dirs := $(sort $(notdir $(board-dirs:/=))) | |
1da177e4 | 1399 | |
fe69b420 | 1400 | PHONY += help |
1da177e4 LT |
1401 | help: |
1402 | @echo 'Cleaning targets:' | |
5ea084ef | 1403 | @echo ' clean - Remove most generated files but keep the config and' |
5cc8d246 | 1404 | @echo ' enough build support to build external modules' |
5ea084ef | 1405 | @echo ' mrproper - Remove all generated files + config + various backup files' |
5cc8d246 | 1406 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4 LT |
1407 | @echo '' |
1408 | @echo 'Configuration targets:' | |
1409 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help | |
1410 | @echo '' | |
1411 | @echo 'Other generic targets:' | |
1412 | @echo ' all - Build all targets marked with [*]' | |
1413 | @echo '* vmlinux - Build the bare kernel' | |
1414 | @echo '* modules - Build all modules' | |
9cc5d74c | 1415 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
88ecf814 DW |
1416 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
1417 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' | |
1da177e4 | 1418 | @echo ' dir/ - Build all files in dir and below' |
40ab87a4 | 1419 | @echo ' dir/file.[ois] - Build specified target only' |
433db3e2 VT |
1420 | @echo ' dir/file.ll - Build the LLVM assembly file' |
1421 | @echo ' (requires compiler support for LLVM assembly generation)' | |
62718979 JP |
1422 | @echo ' dir/file.lst - Build specified mixed source/assembly target only' |
1423 | @echo ' (requires a recent binutils and recent build (System.map))' | |
155ad605 | 1424 | @echo ' dir/file.ko - Build module including final link' |
c4d5ee67 | 1425 | @echo ' modules_prepare - Set up for building external modules' |
1da177e4 LT |
1426 | @echo ' tags/TAGS - Generate tags file for editors' |
1427 | @echo ' cscope - Generate cscope index' | |
f4ed1009 | 1428 | @echo ' gtags - Generate GNU GLOBAL index' |
3f1d9a6c MM |
1429 | @echo ' kernelrelease - Output the release version string (use with make -s)' |
1430 | @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' | |
1431 | @echo ' image_name - Output the image name (use with make -s)' | |
2fb9b1bd | 1432 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
59df3230 | 1433 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
2fb9b1bd | 1434 | echo '' |
31b8cc80 | 1435 | @echo 'Static analysers:' |
1da177e4 LT |
1436 | @echo ' checkstack - Generate a list of stack hogs' |
1437 | @echo ' namespacecheck - Name space analysis on compiled kernel' | |
aa025e7d | 1438 | @echo ' versioncheck - Sanity check on version.h usage' |
ec2d987f | 1439 | @echo ' includecheck - Check for duplicate included header files' |
295ac051 | 1440 | @echo ' export_report - List the usages of all exported symbols' |
179efcb4 | 1441 | @echo ' headers_check - Sanity check on exported headers' |
74425eee NP |
1442 | @echo ' headerdep - Detect inclusion cycles in headers' |
1443 | @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help | |
1444 | @echo '' | |
31b8cc80 | 1445 | @echo 'Kernel selftest:' |
5a5da78b SK |
1446 | @echo ' kselftest - Build and run kernel selftest (run as root)' |
1447 | @echo ' Build, install, and boot kernel before' | |
1448 | @echo ' running kselftest on it' | |
dcb825a9 | 1449 | @echo ' kselftest-clean - Remove all generated kselftest files' |
3d6dee7a BJZ |
1450 | @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existed' |
1451 | @echo ' .config.' | |
5a5da78b | 1452 | @echo '' |
31b8cc80 RD |
1453 | @echo 'Userspace tools targets:' |
1454 | @echo ' use "make tools/help"' | |
1455 | @echo ' or "cd tools; make help"' | |
1456 | @echo '' | |
1da177e4 | 1457 | @echo 'Kernel packaging:' |
6c2133e1 | 1458 | @$(MAKE) $(build)=$(package-dir) help |
1da177e4 LT |
1459 | @echo '' |
1460 | @echo 'Documentation targets:' | |
cb43fb57 | 1461 | @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp |
1da177e4 | 1462 | @echo '' |
01dee188 | 1463 | @echo 'Architecture specific targets ($(SRCARCH)):' |
1da177e4 | 1464 | @$(if $(archhelp),$(archhelp),\ |
01dee188 | 1465 | echo ' No architecture specific help defined for $(SRCARCH)') |
1da177e4 LT |
1466 | @echo '' |
1467 | @$(if $(boards), \ | |
1468 | $(foreach b, $(boards), \ | |
1469 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ | |
1470 | echo '') | |
5dffbe81 SB |
1471 | @$(if $(board-dirs), \ |
1472 | $(foreach b, $(board-dirs), \ | |
1473 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ | |
1474 | printf " %-16s - Show all of the above\\n" help-boards; \ | |
1475 | echo '') | |
1da177e4 LT |
1476 | |
1477 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' | |
45d506bd | 1478 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4 | 1479 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
9ba26a72 | 1480 | @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)' |
701842e3 | 1481 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
af07ce3e | 1482 | @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
28bc20dc SR |
1483 | @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' |
1484 | @echo ' 1: warnings which may be relevant and do not occur too often' | |
1485 | @echo ' 2: warnings which occur quite often but may still be relevant' | |
1486 | @echo ' 3: more obscure warnings, can most likely be ignored' | |
a6de553d | 1487 | @echo ' Multiple levels can be combined with W=12 or W=123' |
1da177e4 LT |
1488 | @echo '' |
1489 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' | |
1490 | @echo 'For further info see the ./README file' | |
1491 | ||
1492 | ||
5dffbe81 SB |
1493 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
1494 | ||
1495 | help-boards: $(help-board-dirs) | |
1496 | ||
fbae4d58 | 1497 | boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) |
5dffbe81 SB |
1498 | |
1499 | $(help-board-dirs): help-%: | |
1500 | @echo 'Architecture specific targets ($(SRCARCH) $*):' | |
1501 | @$(if $(boards-per-dir), \ | |
1502 | $(foreach b, $(boards-per-dir), \ | |
1503 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ | |
1504 | echo '') | |
1505 | ||
1506 | ||
1da177e4 LT |
1507 | # Documentation targets |
1508 | # --------------------------------------------------------------------------- | |
62924fd7 | 1509 | DOC_TARGETS := xmldocs sgmldocs psdocs latexdocs pdfdocs htmldocs mandocs installmandocs epubdocs cleandocs linkcheckdocs |
22cba31b JN |
1510 | PHONY += $(DOC_TARGETS) |
1511 | $(DOC_TARGETS): scripts_basic FORCE | |
cb43fb57 | 1512 | $(Q)$(MAKE) $(build)=Documentation $@ |
1da177e4 LT |
1513 | |
1514 | else # KBUILD_EXTMOD | |
1515 | ||
1516 | ### | |
1517 | # External module support. | |
1518 | # When building external modules the kernel used as basis is considered | |
1519 | # read-only, and no consistency checks are made and the make | |
1520 | # system is not used on the basis kernel. If updates are required | |
1521 | # in the basis kernel ordinary make commands (without M=...) must | |
1522 | # be used. | |
1523 | # | |
1524 | # The following are the only valid targets when building external | |
1525 | # modules. | |
1526 | # make M=dir clean Delete all automatically generated files | |
1527 | # make M=dir modules Make all modules in specified dir | |
1528 | # make M=dir Same as 'make M=dir modules' | |
1529 | # make M=dir modules_install | |
070b98bf | 1530 | # Install the modules built in the module directory |
1da177e4 LT |
1531 | # Assumes install directory is already created |
1532 | ||
1533 | # We are always building modules | |
1534 | KBUILD_MODULES := 1 | |
4f193362 | 1535 | PHONY += crmodverdir |
1da177e4 | 1536 | crmodverdir: |
7bb9d092 | 1537 | $(cmd_crmodverdir) |
1da177e4 | 1538 | |
4f193362 | 1539 | PHONY += $(objtree)/Module.symvers |
1da177e4 LT |
1540 | $(objtree)/Module.symvers: |
1541 | @test -e $(objtree)/Module.symvers || ( \ | |
1542 | echo; \ | |
1543 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ | |
1544 | echo " is missing; modules will have no dependencies and modversions."; \ | |
1545 | echo ) | |
1546 | ||
1547 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) | |
4f193362 | 1548 | PHONY += $(module-dirs) modules |
1da177e4 LT |
1549 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1550 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) | |
1551 | ||
1552 | modules: $(module-dirs) | |
fd54f502 | 1553 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1554 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4 | 1555 | |
4f193362 | 1556 | PHONY += modules_install |
a67dc21a | 1557 | modules_install: _emodinst_ _emodinst_post |
e6304663 | 1558 | |
4f193362 PS |
1559 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1560 | PHONY += _emodinst_ | |
a67dc21a | 1561 | _emodinst_: |
a67dc21a | 1562 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e | 1563 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1564 | |
4f193362 | 1565 | PHONY += _emodinst_post |
a67dc21a SR |
1566 | _emodinst_post: _emodinst_ |
1567 | $(call cmd,depmod) | |
1568 | ||
1da177e4 LT |
1569 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1570 | ||
4f193362 | 1571 | PHONY += $(clean-dirs) clean |
1da177e4 LT |
1572 | $(clean-dirs): |
1573 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1574 | ||
1575 | clean: rm-dirs := $(MODVERDIR) | |
88d7be03 | 1576 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
1da177e4 | 1577 | |
fe69b420 | 1578 | PHONY += help |
1da177e4 LT |
1579 | help: |
1580 | @echo ' Building external modules.' | |
1581 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' | |
1582 | @echo '' | |
1583 | @echo ' modules - default target, build the module(s)' | |
1584 | @echo ' modules_install - install the module' | |
1585 | @echo ' clean - remove generated files in module directory only' | |
1586 | @echo '' | |
06300b21 SR |
1587 | |
1588 | # Dummies... | |
4f193362 | 1589 | PHONY += prepare scripts |
06300b21 SR |
1590 | prepare: ; |
1591 | scripts: ; | |
1da177e4 LT |
1592 | endif # KBUILD_EXTMOD |
1593 | ||
88d7be03 MM |
1594 | clean: $(clean-dirs) |
1595 | $(call cmd,rmdirs) | |
1596 | $(call cmd,rmfiles) | |
43f67c98 | 1597 | @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
88d7be03 | 1598 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
addbcdbb | 1599 | -o -name '*.ko.*' \ |
866ced95 | 1600 | -o -name '*.dwo' \ |
d523b255 | 1601 | -o -name '*.su' \ |
88d7be03 MM |
1602 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
1603 | -o -name '*.symtypes' -o -name 'modules.order' \ | |
1604 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ | |
6b90bd4b | 1605 | -o -name '*.c.[012]*.*' \ |
433db3e2 | 1606 | -o -name '*.ll' \ |
88d7be03 MM |
1607 | -o -name '*.gcno' \) -type f -print | xargs rm -f |
1608 | ||
1da177e4 LT |
1609 | # Generate tags for editors |
1610 | # --------------------------------------------------------------------------- | |
a680eedc SR |
1611 | quiet_cmd_tags = GEN $@ |
1612 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ | |
1da177e4 | 1613 | |
f4ed1009 | 1614 | tags TAGS cscope gtags: FORCE |
1da177e4 LT |
1615 | $(call cmd,tags) |
1616 | ||
1da177e4 LT |
1617 | # Scripts to check various things for consistency |
1618 | # --------------------------------------------------------------------------- | |
1619 | ||
279f3dd3 PF |
1620 | PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
1621 | ||
1da177e4 | 1622 | includecheck: |
436f876c | 1623 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4 | 1624 | -name '*.[hcS]' -type f -print | sort \ |
80007434 | 1625 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1da177e4 LT |
1626 | |
1627 | versioncheck: | |
2ee2d292 | 1628 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4 | 1629 | -name '*.[hcS]' -type f -print | sort \ |
80007434 | 1630 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1da177e4 | 1631 | |
74425eee NP |
1632 | coccicheck: |
1633 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ | |
1634 | ||
1da177e4 LT |
1635 | namespacecheck: |
1636 | $(PERL) $(srctree)/scripts/namespace.pl | |
1637 | ||
295ac051 AB |
1638 | export_report: |
1639 | $(PERL) $(srctree)/scripts/export_report.pl | |
1640 | ||
1da177e4 LT |
1641 | endif #ifeq ($(config-targets),1) |
1642 | endif #ifeq ($(mixed-targets),1) | |
1643 | ||
c398ff00 | 1644 | PHONY += checkstack kernelrelease kernelversion image_name |
e3ccf6e3 | 1645 | |
011e3a9a JD |
1646 | # UML needs a little special treatment here. It wants to use the host |
1647 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone | |
1648 | # else wants $(ARCH), including people doing cross-builds, which means | |
1649 | # that $(SUBARCH) doesn't work here. | |
1650 | ifeq ($(ARCH), um) | |
1651 | CHECKSTACK_ARCH := $(SUBARCH) | |
1652 | else | |
1653 | CHECKSTACK_ARCH := $(ARCH) | |
1654 | endif | |
1da177e4 LT |
1655 | checkstack: |
1656 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ | |
011e3a9a | 1657 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1da177e4 | 1658 | |
7b8ea53d AW |
1659 | kernelrelease: |
1660 | @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" | |
01ab1788 | 1661 | |
cb58455c | 1662 | kernelversion: |
2244cbd8 | 1663 | @echo $(KERNELVERSION) |
1da177e4 | 1664 | |
c398ff00 MM |
1665 | image_name: |
1666 | @echo $(KBUILD_IMAGE) | |
1667 | ||
ea01fa9f BP |
1668 | # Clear a bunch of variables before executing the submake |
1669 | tools/: FORCE | |
bf35182f | 1670 | $(Q)mkdir -p $(objtree)/tools |
e572d088 | 1671 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ |
ea01fa9f BP |
1672 | |
1673 | tools/%: FORCE | |
bf35182f | 1674 | $(Q)mkdir -p $(objtree)/tools |
e572d088 | 1675 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ $* |
ea01fa9f | 1676 | |
06300b21 SR |
1677 | # Single targets |
1678 | # --------------------------------------------------------------------------- | |
bc2546a6 | 1679 | # Single targets are compatible with: |
e1b8513d | 1680 | # - build with mixed source and output |
bc2546a6 SR |
1681 | # - build with separate output dir 'make O=...' |
1682 | # - external modules | |
1683 | # | |
1684 | # target-dir => where to store outputfile | |
1685 | # build-dir => directory in kernel source tree to use | |
1686 | ||
1687 | ifeq ($(KBUILD_EXTMOD),) | |
aa360879 | 1688 | build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a6 SR |
1689 | target-dir = $(dir $@) |
1690 | else | |
1691 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) | |
1692 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) | |
1693 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) | |
1694 | endif | |
1695 | ||
f6ecebd6 | 1696 | %.s: %.c prepare scripts FORCE |
bc2546a6 | 1697 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1698 | %.i: %.c prepare scripts FORCE |
bc2546a6 | 1699 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1700 | %.o: %.c prepare scripts FORCE |
bc2546a6 | 1701 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1702 | %.lst: %.c prepare scripts FORCE |
bc2546a6 | 1703 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1704 | %.s: %.S prepare scripts FORCE |
bc2546a6 | 1705 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1706 | %.o: %.S prepare scripts FORCE |
bc2546a6 | 1707 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde675 AG |
1708 | %.symtypes: %.c prepare scripts FORCE |
1709 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | |
433db3e2 VT |
1710 | %.ll: %.c prepare scripts FORCE |
1711 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | |
06300b21 | 1712 | |
bc2546a6 | 1713 | # Modules |
31110ebb SR |
1714 | /: prepare scripts FORCE |
1715 | $(cmd_crmodverdir) | |
1716 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ | |
1717 | $(build)=$(build-dir) | |
8e2faea8 | 1718 | # Make sure the latest headers are built for Documentation |
ddea05fa | 1719 | Documentation/ samples/: headers_install |
31110ebb | 1720 | %/: prepare scripts FORCE |
7bb9d092 | 1721 | $(cmd_crmodverdir) |
06300b21 | 1722 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 SR |
1723 | $(build)=$(build-dir) |
1724 | %.ko: prepare scripts FORCE | |
7bb9d092 | 1725 | $(cmd_crmodverdir) |
06300b21 | 1726 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 | 1727 | $(build)=$(build-dir) $(@:.ko=.o) |
b805aa0e | 1728 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21 | 1729 | |
38385f8f | 1730 | # FIXME Should go into a make.lib or something |
1da177e4 LT |
1731 | # =========================================================================== |
1732 | ||
1733 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) | |
1734 | cmd_rmdirs = rm -rf $(rm-dirs) | |
1735 | ||
1736 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) | |
1737 | cmd_rmfiles = rm -f $(rm-files) | |
1738 | ||
bc3c26fe | 1739 | # Run depmod only if we have System.map and depmod is executable |
50a8ec31 | 1740 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
569658dd | 1741 | cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
b92021b0 | 1742 | $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" |
50a8ec31 | 1743 | |
7bb9d092 | 1744 | # Create temporary dir for module support files |
ab19f879 SR |
1745 | # clean it up only when building all modules |
1746 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ | |
1747 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) | |
1da177e4 | 1748 | |
1da177e4 LT |
1749 | # read all saved command lines |
1750 | ||
1751 | targets := $(wildcard $(sort $(targets))) | |
1752 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | |
1753 | ||
1754 | ifneq ($(cmd_files),) | |
1755 | $(cmd_files): ; # Do not try to update included dependency files | |
1756 | include $(cmd_files) | |
1757 | endif | |
1758 | ||
1da177e4 LT |
1759 | endif # skip-makefile |
1760 | ||
4f193362 | 1761 | PHONY += FORCE |
1da177e4 | 1762 | FORCE: |
4f193362 | 1763 | |
4f193362 | 1764 | # Declare the contents of the .PHONY variable as phony. We keep that |
fe8d0a41 | 1765 | # information in a variable so we can use it in if_changed and friends. |
4f193362 | 1766 | .PHONY: $(PHONY) |