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Commit | Line | Data |
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55922c9d | 1 | VERSION = 3 |
a49f0d1e | 2 | PATCHLEVEL = 8 |
55922c9d | 3 | SUBLEVEL = 0 |
a49f0d1e | 4 | EXTRAVERSION = -rc1 |
979570e0 | 5 | NAME = Terrified Chipmunk |
1da177e4 LT |
6 | |
7 | # *DOCUMENTATION* | |
8 | # To see a list of typical targets execute "make help" | |
9 | # More info can be located in ./README | |
10 | # Comments in this file are targeted only to the developer, do not | |
11 | # expect to learn how to build the kernel reading this file. | |
12 | ||
15964864 OV |
13 | # Do not: |
14 | # o use make's built-in rules and variables | |
d384e35a | 15 | # (this increases performance and avoids hard-to-debug behaviour); |
15964864 OV |
16 | # o print "Entering directory ..."; |
17 | MAKEFLAGS += -rR --no-print-directory | |
1da177e4 | 18 | |
c051346b | 19 | # Avoid funny character set dependencies |
06b5dc64 | 20 | unexport LC_ALL |
c051346b PA |
21 | LC_COLLATE=C |
22 | LC_NUMERIC=C | |
07105202 | 23 | export LC_COLLATE LC_NUMERIC |
c051346b | 24 | |
1da177e4 LT |
25 | # We are using a recursive build, so we need to do a little thinking |
26 | # to get the ordering right. | |
27 | # | |
28 | # Most importantly: sub-Makefiles should only ever modify files in | |
29 | # their own directory. If in some directory we have a dependency on | |
30 | # a file in another dir (which doesn't happen often, but it's often | |
31 | # unavoidable when linking the built-in.o targets which finally | |
32 | # turn into vmlinux), we will call a sub make in that other dir, and | |
33 | # after that we are sure that everything which is in that other dir | |
34 | # is now up to date. | |
35 | # | |
36 | # The only cases where we need to modify files which have global | |
37 | # effects are thus separated out and done before the recursive | |
38 | # descending is started. They are now explicitly listed as the | |
39 | # prepare rule. | |
40 | ||
41 | # To put more focus on warnings, be less verbose as default | |
42 | # Use 'make V=1' to see the full commands | |
43 | ||
b8b0618c CR |
44 | ifeq ("$(origin V)", "command line") |
45 | KBUILD_VERBOSE = $(V) | |
1da177e4 LT |
46 | endif |
47 | ifndef KBUILD_VERBOSE | |
48 | KBUILD_VERBOSE = 0 | |
49 | endif | |
50 | ||
1c7bafe7 RD |
51 | # Call a source code checker (by default, "sparse") as part of the |
52 | # C compilation. | |
53 | # | |
54 | # Use 'make C=1' to enable checking of only re-compiled files. | |
55 | # Use 'make C=2' to enable checking of *all* source files, regardless | |
56 | # of whether they are re-compiled or not. | |
57 | # | |
58 | # See the file "Documentation/sparse.txt" for more details, including | |
59 | # where to get the "sparse" utility. | |
1da177e4 | 60 | |
b8b0618c CR |
61 | ifeq ("$(origin C)", "command line") |
62 | KBUILD_CHECKSRC = $(C) | |
1da177e4 LT |
63 | endif |
64 | ifndef KBUILD_CHECKSRC | |
65 | KBUILD_CHECKSRC = 0 | |
66 | endif | |
67 | ||
68 | # Use make M=dir to specify directory of external module to build | |
69 | # Old syntax make ... SUBDIRS=$PWD is still supported | |
70 | # Setting the environment variable KBUILD_EXTMOD take precedence | |
71 | ifdef SUBDIRS | |
72 | KBUILD_EXTMOD ?= $(SUBDIRS) | |
73 | endif | |
1da177e4 | 74 | |
b8b0618c CR |
75 | ifeq ("$(origin M)", "command line") |
76 | KBUILD_EXTMOD := $(M) | |
77 | endif | |
1da177e4 LT |
78 | |
79 | # kbuild supports saving output files in a separate directory. | |
80 | # To locate output files in a separate directory two syntaxes are supported. | |
81 | # In both cases the working directory must be the root of the kernel src. | |
82 | # 1) O= | |
83 | # Use "make O=dir/to/store/output/files/" | |
070b98bf | 84 | # |
1da177e4 LT |
85 | # 2) Set KBUILD_OUTPUT |
86 | # Set the environment variable KBUILD_OUTPUT to point to the directory | |
87 | # where the output files shall be placed. | |
88 | # export KBUILD_OUTPUT=dir/to/store/output/files/ | |
89 | # make | |
90 | # | |
91 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment | |
92 | # variable. | |
93 | ||
94 | ||
95 | # KBUILD_SRC is set on invocation of make in OBJ directory | |
96 | # KBUILD_SRC is not intended to be used by the regular user (for now) | |
97 | ifeq ($(KBUILD_SRC),) | |
98 | ||
99 | # OK, Make called in directory where kernel src resides | |
100 | # Do we want to locate output files in a separate directory? | |
b8b0618c CR |
101 | ifeq ("$(origin O)", "command line") |
102 | KBUILD_OUTPUT := $(O) | |
1da177e4 LT |
103 | endif |
104 | ||
4a5838ad | 105 | ifeq ("$(origin W)", "command line") |
28bc20dc | 106 | export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) |
4a5838ad BP |
107 | endif |
108 | ||
1da177e4 | 109 | # That's our default target when none is given on the command line |
4f193362 | 110 | PHONY := _all |
1da177e4 LT |
111 | _all: |
112 | ||
1cacc9ab SR |
113 | # Cancel implicit rules on top Makefile |
114 | $(CURDIR)/Makefile Makefile: ; | |
115 | ||
1da177e4 LT |
116 | ifneq ($(KBUILD_OUTPUT),) |
117 | # Invoke a second make in the output directory, passing relevant variables | |
118 | # check that the output directory actually exists | |
119 | saved-output := $(KBUILD_OUTPUT) | |
120 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) | |
121 | $(if $(KBUILD_OUTPUT),, \ | |
122 | $(error output directory "$(saved-output)" does not exist)) | |
1da177e4 | 123 | |
0b35786d MM |
124 | PHONY += $(MAKECMDGOALS) sub-make |
125 | ||
1cacc9ab | 126 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
16f89098 | 127 | @: |
0b35786d MM |
128 | |
129 | sub-make: FORCE | |
23a45e2c SR |
130 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
131 | KBUILD_SRC=$(CURDIR) \ | |
0b35786d MM |
132 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
133 | $(filter-out _all sub-make,$(MAKECMDGOALS)) | |
1da177e4 LT |
134 | |
135 | # Leave processing to above invocation of make | |
136 | skip-makefile := 1 | |
137 | endif # ifneq ($(KBUILD_OUTPUT),) | |
138 | endif # ifeq ($(KBUILD_SRC),) | |
139 | ||
140 | # We process the rest of the Makefile if this is the final invocation of make | |
141 | ifeq ($(skip-makefile),) | |
142 | ||
143 | # If building an external module we do not care about the all: rule | |
144 | # but instead _all depend on modules | |
4f193362 | 145 | PHONY += all |
1da177e4 LT |
146 | ifeq ($(KBUILD_EXTMOD),) |
147 | _all: all | |
148 | else | |
149 | _all: modules | |
150 | endif | |
151 | ||
152 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) | |
1da177e4 LT |
153 | objtree := $(CURDIR) |
154 | src := $(srctree) | |
155 | obj := $(objtree) | |
156 | ||
0f558c33 | 157 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
1da177e4 | 158 | |
11294235 | 159 | export srctree objtree VPATH |
1da177e4 | 160 | |
1da177e4 LT |
161 | |
162 | # SUBARCH tells the usermode build what the underlying arch is. That is set | |
163 | # first, and if a usermode build is happening, the "ARCH=um" on the command | |
164 | # line overrides the setting of ARCH below. If a native build is happening, | |
165 | # then ARCH is assigned, getting whatever value it gets normally, and | |
166 | # SUBARCH is subsequently ignored. | |
167 | ||
168 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ | |
169 | -e s/arm.*/arm/ -e s/sa110/arm/ \ | |
39990b5e | 170 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
236b1957 | 171 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
3cc000b5 | 172 | -e s/sh[234].*/sh/ ) |
1da177e4 LT |
173 | |
174 | # Cross compiling and selecting different set of gcc/bin-utils | |
175 | # --------------------------------------------------------------------------- | |
176 | # | |
177 | # When performing cross compilation for other architectures ARCH shall be set | |
178 | # to the target architecture. (See arch/* for the possibilities). | |
179 | # ARCH can be set during invocation of make: | |
180 | # make ARCH=ia64 | |
181 | # Another way is to have ARCH set in the environment. | |
182 | # The default ARCH is the host where make is executed. | |
183 | ||
184 | # CROSS_COMPILE specify the prefix used for all executables used | |
185 | # during compilation. Only gcc and related bin-utils executables | |
186 | # are prefixed with $(CROSS_COMPILE). | |
187 | # CROSS_COMPILE can be set on the command line | |
188 | # make CROSS_COMPILE=ia64-linux- | |
189 | # Alternatively CROSS_COMPILE can be set in the environment. | |
84336466 RM |
190 | # A third alternative is to store a setting in .config so that plain |
191 | # "make" in the configured kernel build directory always uses that. | |
1da177e4 LT |
192 | # Default value for CROSS_COMPILE is not to prefix executables |
193 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile | |
2331d1a6 | 194 | ARCH ?= $(SUBARCH) |
84336466 | 195 | CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
1da177e4 LT |
196 | |
197 | # Architecture as present in compile.h | |
6752ed90 TG |
198 | UTS_MACHINE := $(ARCH) |
199 | SRCARCH := $(ARCH) | |
1da177e4 | 200 | |
d746d647 SR |
201 | # Additional ARCH settings for x86 |
202 | ifeq ($(ARCH),i386) | |
203 | SRCARCH := x86 | |
204 | endif | |
205 | ifeq ($(ARCH),x86_64) | |
206 | SRCARCH := x86 | |
207 | endif | |
74b469f2 | 208 | |
5e538790 | 209 | # Additional ARCH settings for sparc |
e69f58c0 NK |
210 | ifeq ($(ARCH),sparc32) |
211 | SRCARCH := sparc | |
212 | endif | |
a439fe51 | 213 | ifeq ($(ARCH),sparc64) |
5e538790 | 214 | SRCARCH := sparc |
a439fe51 | 215 | endif |
2fb9b1bd | 216 | |
3cc000b5 PM |
217 | # Additional ARCH settings for sh |
218 | ifeq ($(ARCH),sh64) | |
219 | SRCARCH := sh | |
220 | endif | |
221 | ||
18aecc2b | 222 | # Additional ARCH settings for tile |
6738d321 CM |
223 | ifeq ($(ARCH),tilepro) |
224 | SRCARCH := tile | |
225 | endif | |
18aecc2b CM |
226 | ifeq ($(ARCH),tilegx) |
227 | SRCARCH := tile | |
228 | endif | |
229 | ||
5e538790 SR |
230 | # Where to locate arch specific headers |
231 | hdr-arch := $(SRCARCH) | |
232 | ||
14cdd3c4 | 233 | KCONFIG_CONFIG ?= .config |
41263fc6 | 234 | export KCONFIG_CONFIG |
14cdd3c4 | 235 | |
1da177e4 LT |
236 | # SHELL used by kbuild |
237 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
238 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
239 | else echo sh; fi ; fi) | |
240 | ||
070b98bf SR |
241 | HOSTCC = gcc |
242 | HOSTCXX = g++ | |
25583d4b | 243 | HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer |
070b98bf | 244 | HOSTCXXFLAGS = -O2 |
1da177e4 | 245 | |
070b98bf SR |
246 | # Decide whether to build built-in, modular, or both. |
247 | # Normally, just do built-in. | |
1da177e4 LT |
248 | |
249 | KBUILD_MODULES := | |
250 | KBUILD_BUILTIN := 1 | |
251 | ||
252 | # If we have only "make modules", don't compile built-in objects. | |
253 | # When we're building modules with modversions, we need to consider | |
254 | # the built-in objects during the descend as well, in order to | |
070b98bf | 255 | # make sure the checksums are up to date before we record them. |
1da177e4 LT |
256 | |
257 | ifeq ($(MAKECMDGOALS),modules) | |
258 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) | |
259 | endif | |
260 | ||
261 | # If we have "make <whatever> modules", compile modules | |
262 | # in addition to whatever we do anyway. | |
263 | # Just "make" or "make all" shall build modules as well | |
264 | ||
265 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) | |
266 | KBUILD_MODULES := 1 | |
267 | endif | |
268 | ||
269 | ifeq ($(MAKECMDGOALS),) | |
270 | KBUILD_MODULES := 1 | |
271 | endif | |
272 | ||
e579d351 | 273 | export KBUILD_MODULES KBUILD_BUILTIN |
1da177e4 LT |
274 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
275 | ||
276 | # Beautify output | |
277 | # --------------------------------------------------------------------------- | |
278 | # | |
279 | # Normally, we echo the whole command before executing it. By making | |
280 | # that echo $($(quiet)$(cmd)), we now have the possibility to set | |
281 | # $(quiet) to choose other forms of output instead, e.g. | |
282 | # | |
283 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ | |
284 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | |
285 | # | |
286 | # If $(quiet) is empty, the whole command will be printed. | |
287 | # If it is set to "quiet_", only the short version will be printed. | |
070b98bf | 288 | # If it is set to "silent_", nothing will be printed at all, since |
1da177e4 LT |
289 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
290 | # | |
a58a414f | 291 | # A simple variant is to prefix commands with $(Q) - that's useful |
1da177e4 LT |
292 | # for commands that shall be hidden in non-verbose mode. |
293 | # | |
294 | # $(Q)ln $@ :< | |
295 | # | |
296 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. | |
297 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. | |
298 | ||
299 | ifeq ($(KBUILD_VERBOSE),1) | |
300 | quiet = | |
301 | Q = | |
302 | else | |
303 | quiet=quiet_ | |
304 | Q = @ | |
305 | endif | |
306 | ||
307 | # If the user is running make -s (silent mode), suppress echoing of | |
308 | # commands | |
309 | ||
e6ac89fa | 310 | ifneq ($(filter s% -s%,$(MAKEFLAGS)),) |
1da177e4 LT |
311 | quiet=silent_ |
312 | endif | |
313 | ||
314 | export quiet Q KBUILD_VERBOSE | |
315 | ||
1da177e4 LT |
316 | |
317 | # Look for make include files relative to root of kernel src | |
318 | MAKEFLAGS += --include-dir=$(srctree) | |
319 | ||
1cacc9ab SR |
320 | # We need some generic definitions (do not try to remake the file). |
321 | $(srctree)/scripts/Kbuild.include: ; | |
15964864 | 322 | include $(srctree)/scripts/Kbuild.include |
1da177e4 LT |
323 | |
324 | # Make variables (CC, etc...) | |
325 | ||
326 | AS = $(CROSS_COMPILE)as | |
327 | LD = $(CROSS_COMPILE)ld | |
328 | CC = $(CROSS_COMPILE)gcc | |
329 | CPP = $(CC) -E | |
330 | AR = $(CROSS_COMPILE)ar | |
331 | NM = $(CROSS_COMPILE)nm | |
332 | STRIP = $(CROSS_COMPILE)strip | |
333 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
334 | OBJDUMP = $(CROSS_COMPILE)objdump | |
335 | AWK = awk | |
336 | GENKSYMS = scripts/genksyms/genksyms | |
caa27b66 | 337 | INSTALLKERNEL := installkernel |
1da177e4 | 338 | DEPMOD = /sbin/depmod |
1da177e4 LT |
339 | PERL = perl |
340 | CHECK = sparse | |
341 | ||
80a7d1d9 HE |
342 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
343 | -Wbitwise -Wno-return-void $(CF) | |
6588169d SR |
344 | CFLAGS_MODULE = |
345 | AFLAGS_MODULE = | |
346 | LDFLAGS_MODULE = | |
1da177e4 LT |
347 | CFLAGS_KERNEL = |
348 | AFLAGS_KERNEL = | |
2521f2c2 | 349 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
1da177e4 LT |
350 | |
351 | ||
abbf1590 DH |
352 | # Use USERINCLUDE when you must reference the UAPI directories only. |
353 | USERINCLUDE := \ | |
354 | -I$(srctree)/arch/$(hdr-arch)/include/uapi \ | |
355 | -Iarch/$(hdr-arch)/include/generated/uapi \ | |
356 | -I$(srctree)/include/uapi \ | |
357 | -Iinclude/generated/uapi \ | |
358 | -include $(srctree)/include/linux/kconfig.h | |
359 | ||
1da177e4 LT |
360 | # Use LINUXINCLUDE when you must reference the include/ directory. |
361 | # Needed to be compatible with the O= option | |
abbf1590 DH |
362 | LINUXINCLUDE := \ |
363 | -I$(srctree)/arch/$(hdr-arch)/include \ | |
364 | -Iarch/$(hdr-arch)/include/generated \ | |
365 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ | |
366 | -Iinclude \ | |
367 | $(USERINCLUDE) | |
1da177e4 | 368 | |
d8672b40 | 369 | KBUILD_CPPFLAGS := -D__KERNEL__ |
1da177e4 | 370 | |
a0f97e06 | 371 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
94bed2a9 | 372 | -fno-strict-aliasing -fno-common \ |
a8735821 | 373 | -Werror-implicit-function-declaration \ |
a3ca86ae ET |
374 | -Wno-format-security \ |
375 | -fno-delete-null-pointer-checks | |
80c00ba9 SR |
376 | KBUILD_AFLAGS_KERNEL := |
377 | KBUILD_CFLAGS_KERNEL := | |
222d394d | 378 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
6588169d SR |
379 | KBUILD_AFLAGS_MODULE := -DMODULE |
380 | KBUILD_CFLAGS_MODULE := -DMODULE | |
381 | KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds | |
1da177e4 | 382 | |
f1d28fb0 RZ |
383 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
384 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) | |
cacd54ef | 385 | KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) |
cb58455c | 386 | |
070b98bf | 387 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
80ef88d6 | 388 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
caa27b66 SR |
389 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
390 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE | |
070b98bf | 391 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
1da177e4 | 392 | |
06c5040c | 393 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
2521f2c2 | 394 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
222d394d | 395 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
6588169d | 396 | export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
80c00ba9 | 397 | export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
40df759e | 398 | export KBUILD_ARFLAGS |
1da177e4 LT |
399 | |
400 | # When compiling out-of-tree modules, put MODVERDIR in the module | |
401 | # tree rather than in the kernel tree. The kernel tree might | |
402 | # even be read-only. | |
403 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions | |
404 | ||
1da177e4 LT |
405 | # Files to ignore in find ... statements |
406 | ||
450c6076 JJ |
407 | RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \ |
408 | -o -name .pc -o -name .hg -o -name .git \) -prune -o | |
409 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ | |
410 | --exclude CVS --exclude .pc --exclude .hg --exclude .git | |
1da177e4 LT |
411 | |
412 | # =========================================================================== | |
413 | # Rules shared between *config targets and build targets | |
414 | ||
415 | # Basic helpers built in scripts/ | |
4f193362 | 416 | PHONY += scripts_basic |
1da177e4 LT |
417 | scripts_basic: |
418 | $(Q)$(MAKE) $(build)=scripts/basic | |
638adb05 | 419 | $(Q)rm -f .tmp_quiet_recordmcount |
1da177e4 | 420 | |
cd05e6bd JB |
421 | # To avoid any implicit rule to kick in, define an empty command. |
422 | scripts/basic/%: scripts_basic ; | |
423 | ||
4f193362 | 424 | PHONY += outputmakefile |
fd5f0cd6 JB |
425 | # outputmakefile generates a Makefile in the output directory, if using a |
426 | # separate output directory. This allows convenient use of make in the | |
427 | # output directory. | |
1da177e4 | 428 | outputmakefile: |
fd5f0cd6 | 429 | ifneq ($(KBUILD_SRC),) |
92979997 | 430 | $(Q)ln -fsn $(srctree) source |
fd5f0cd6 JB |
431 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
432 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) | |
433 | endif | |
1da177e4 | 434 | |
d8ecc5cd SR |
435 | # Support for using generic headers in asm-generic |
436 | PHONY += asm-generic | |
437 | asm-generic: | |
438 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ | |
3c5994c8 CM |
439 | src=asm obj=arch/$(SRCARCH)/include/generated/asm |
440 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ | |
441 | src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm | |
d8ecc5cd | 442 | |
1da177e4 LT |
443 | # To make sure we do not include .config for any of the *config targets |
444 | # catch them early, and hand them over to scripts/kconfig/Makefile | |
445 | # It is allowed to specify more targets when calling make, including | |
446 | # mixing *config targets and build targets. | |
070b98bf | 447 | # For example 'make oldconfig all'. |
1da177e4 LT |
448 | # Detect when mixed targets is specified, and make a second invocation |
449 | # of make so .config is not included in this case either (for *config). | |
450 | ||
10b63956 | 451 | version_h := include/generated/uapi/linux/version.h |
d183e6f5 | 452 | |
3eb3c740 | 453 | no-dot-config-targets := clean mrproper distclean \ |
f4ed1009 | 454 | cscope gtags TAGS tags help %docs check% coccicheck \ |
d183e6f5 | 455 | $(version_h) headers_% archheaders archscripts \ |
4aed2fd8 | 456 | kernelversion %src-pkg |
1da177e4 LT |
457 | |
458 | config-targets := 0 | |
459 | mixed-targets := 0 | |
460 | dot-config := 1 | |
461 | ||
462 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
463 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
464 | dot-config := 0 | |
465 | endif | |
466 | endif | |
467 | ||
468 | ifeq ($(KBUILD_EXTMOD),) | |
469 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) | |
470 | config-targets := 1 | |
471 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) | |
472 | mixed-targets := 1 | |
473 | endif | |
474 | endif | |
475 | endif | |
476 | ||
477 | ifeq ($(mixed-targets),1) | |
478 | # =========================================================================== | |
479 | # We're called with mixed targets (*config and build targets). | |
480 | # Handle them one by one. | |
481 | ||
482 | %:: FORCE | |
483 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ | |
484 | ||
485 | else | |
486 | ifeq ($(config-targets),1) | |
487 | # =========================================================================== | |
488 | # *config targets only - make sure prerequisites are updated, and descend | |
489 | # in scripts/kconfig to make the *config target | |
490 | ||
491 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. | |
492 | # KBUILD_DEFCONFIG may point out an alternative default configuration | |
493 | # used for 'make defconfig' | |
74b469f2 | 494 | include $(srctree)/arch/$(SRCARCH)/Makefile |
61bee204 | 495 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
1da177e4 | 496 | |
31110ebb SR |
497 | config: scripts_basic outputmakefile FORCE |
498 | $(Q)mkdir -p include/linux include/config | |
499 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ | |
500 | ||
501 | %config: scripts_basic outputmakefile FORCE | |
c955ccaf | 502 | $(Q)mkdir -p include/linux include/config |
1da177e4 LT |
503 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
504 | ||
505 | else | |
506 | # =========================================================================== | |
507 | # Build targets only - this includes vmlinux, arch specific targets, clean | |
508 | # targets and others. In general all targets except *config targets. | |
509 | ||
510 | ifeq ($(KBUILD_EXTMOD),) | |
511 | # Additional helpers built in scripts/ | |
512 | # Carefully list dependencies so we do not try to build scripts twice | |
070b98bf | 513 | # in parallel |
4f193362 | 514 | PHONY += scripts |
bc081dd6 | 515 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf |
1da177e4 LT |
516 | $(Q)$(MAKE) $(build)=$(@) |
517 | ||
1da177e4 LT |
518 | # Objects we will link into vmlinux / subdirs we need to visit |
519 | init-y := init/ | |
4d2acfbf | 520 | drivers-y := drivers/ sound/ firmware/ |
1da177e4 LT |
521 | net-y := net/ |
522 | libs-y := lib/ | |
523 | core-y := usr/ | |
524 | endif # KBUILD_EXTMOD | |
525 | ||
526 | ifeq ($(dot-config),1) | |
9ee4e336 SR |
527 | # Read in config |
528 | -include include/config/auto.conf | |
1da177e4 | 529 | |
9ee4e336 | 530 | ifeq ($(KBUILD_EXTMOD),) |
1da177e4 LT |
531 | # Read in dependencies to all Kconfig* files, make sure to run |
532 | # oldconfig if changes are detected. | |
c955ccaf | 533 | -include include/config/auto.conf.cmd |
1da177e4 | 534 | |
1da177e4 | 535 | # To avoid any implicit rule to kick in, define an empty command |
14cdd3c4 | 536 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
1da177e4 | 537 | |
c955ccaf | 538 | # If .config is newer than include/config/auto.conf, someone tinkered |
752625cf | 539 | # with it and forgot to run make oldconfig. |
070b98bf | 540 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
752625cf | 541 | # we execute the config step to be sure to catch updated Kconfig files |
bc081dd6 | 542 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
1da177e4 | 543 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
3041e47e | 544 | else |
264a2683 | 545 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
9ee4e336 SR |
546 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
547 | PHONY += include/config/auto.conf | |
548 | ||
549 | include/config/auto.conf: | |
264a2683 | 550 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
5369f550 MM |
551 | echo >&2; \ |
552 | echo >&2 " ERROR: Kernel configuration is invalid."; \ | |
553 | echo >&2 " include/generated/autoconf.h or $@ are missing.";\ | |
554 | echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ | |
555 | echo >&2 ; \ | |
9ee4e336 SR |
556 | /bin/false) |
557 | ||
558 | endif # KBUILD_EXTMOD | |
c955ccaf | 559 | |
1da177e4 LT |
560 | else |
561 | # Dummy target needed, because used as prerequisite | |
c955ccaf | 562 | include/config/auto.conf: ; |
9ee4e336 | 563 | endif # $(dot-config) |
1da177e4 LT |
564 | |
565 | # The all: target is the default when no target is given on the | |
566 | # command line. | |
567 | # This allow a user to issue only 'make' to build a kernel including modules | |
c8447161 | 568 | # Defaults to vmlinux, but the arch makefile usually adds further targets |
1da177e4 LT |
569 | all: vmlinux |
570 | ||
571 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE | |
a0f97e06 | 572 | KBUILD_CFLAGS += -Os |
1da177e4 | 573 | else |
a0f97e06 | 574 | KBUILD_CFLAGS += -O2 |
1da177e4 LT |
575 | endif |
576 | ||
a1f42beb PM |
577 | include $(srctree)/arch/$(SRCARCH)/Makefile |
578 | ||
1873e870 AK |
579 | ifdef CONFIG_READABLE_ASM |
580 | # Disable optimizations that make assembler listings hard to read. | |
581 | # reorder blocks reorders the control in the function | |
582 | # ipa clone creates specialized cloned functions | |
583 | # partial inlining inlines only parts of functions | |
584 | KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ | |
585 | $(call cc-option,-fno-ipa-cp-clone,) \ | |
586 | $(call cc-option,-fno-partial-inlining) | |
587 | endif | |
588 | ||
08f67461 | 589 | ifneq ($(CONFIG_FRAME_WARN),0) |
35bb5b1e AK |
590 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
591 | endif | |
592 | ||
e06b8b98 | 593 | # Force gcc to behave correct even for buggy distributions |
5d707e9c | 594 | ifndef CONFIG_CC_STACKPROTECTOR |
e06b8b98 | 595 | KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
5d707e9c | 596 | endif |
e06b8b98 | 597 | |
af0e5d56 DJ |
598 | # This warning generated too much noise in a regular build. |
599 | # Use make W=1 to enable this warning (see scripts/Makefile.build) | |
8417da6f | 600 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) |
af0e5d56 | 601 | |
1da177e4 | 602 | ifdef CONFIG_FRAME_POINTER |
a0f97e06 | 603 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
1da177e4 | 604 | else |
7e9501fd RV |
605 | # Some targets (ARM with Thumb2, for example), can't be built with frame |
606 | # pointers. For those, we don't have FUNCTION_TRACER automatically | |
607 | # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is | |
608 | # incompatible with -fomit-frame-pointer with current GCC, so we don't use | |
609 | # -fomit-frame-pointer with FUNCTION_TRACER. | |
610 | ifndef CONFIG_FUNCTION_TRACER | |
a0f97e06 | 611 | KBUILD_CFLAGS += -fomit-frame-pointer |
1da177e4 | 612 | endif |
7e9501fd | 613 | endif |
1da177e4 LT |
614 | |
615 | ifdef CONFIG_DEBUG_INFO | |
a0f97e06 | 616 | KBUILD_CFLAGS += -g |
222d394d | 617 | KBUILD_AFLAGS += -gdwarf-2 |
1da177e4 LT |
618 | endif |
619 | ||
d6f4ceb7 AK |
620 | ifdef CONFIG_DEBUG_INFO_REDUCED |
621 | KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) | |
622 | endif | |
623 | ||
606576ce | 624 | ifdef CONFIG_FUNCTION_TRACER |
a2546fae SR |
625 | ifdef CONFIG_HAVE_FENTRY |
626 | CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) | |
627 | endif | |
628 | KBUILD_CFLAGS += -pg $(CC_USING_FENTRY) | |
629 | KBUILD_AFLAGS += $(CC_USING_FENTRY) | |
72441cb1 | 630 | ifdef CONFIG_DYNAMIC_FTRACE |
cf4db259 | 631 | ifdef CONFIG_HAVE_C_RECORDMCOUNT |
72441cb1 SR |
632 | BUILD_C_RECORDMCOUNT := y |
633 | export BUILD_C_RECORDMCOUNT | |
634 | endif | |
635 | endif | |
16444a8a ACM |
636 | endif |
637 | ||
91341d4b SR |
638 | # We trigger additional mismatches with less inlining |
639 | ifdef CONFIG_DEBUG_SECTION_MISMATCH | |
640 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) | |
641 | endif | |
642 | ||
e8e69931 | 643 | # arch Makefile may override CC so keep this after arch Makefile is included |
e8f5bdb0 | 644 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
e8e69931 SR |
645 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
646 | ||
1da177e4 | 647 | # warn about C99 declaration after statement |
a0f97e06 | 648 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
1da177e4 | 649 | |
070b98bf | 650 | # disable pointer signed / unsigned warnings in gcc 4.0 |
8417da6f | 651 | KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
1da177e4 | 652 | |
fe8d0a41 | 653 | # disable invalid "can't wrap" optimizations for signed / pointers |
a137802e | 654 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
d0115552 | 655 | |
8f7f5c9f AK |
656 | # conserve stack if available |
657 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) | |
658 | ||
40df759e MM |
659 | # use the deterministic mode of AR if available |
660 | KBUILD_ARFLAGS := $(call ar-option,D) | |
661 | ||
bf5438fc JB |
662 | # check for 'asm goto' |
663 | ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) | |
664 | KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO | |
665 | endif | |
666 | ||
06c5040c | 667 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
70cfe026 OÇ |
668 | KBUILD_CPPFLAGS += $(KCPPFLAGS) |
669 | KBUILD_AFLAGS += $(KAFLAGS) | |
670 | KBUILD_CFLAGS += $(KCFLAGS) | |
52bcc330 | 671 | |
18991197 RM |
672 | # Use --build-id when available. |
673 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ | |
f86fd306 | 674 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
6588169d | 675 | KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
18991197 RM |
676 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
677 | ||
5d7d18f5 | 678 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
d79a2719 | 679 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
5d7d18f5 DH |
680 | endif |
681 | ||
1da177e4 | 682 | # Default kernel image to build when no specific target is given. |
070b98bf | 683 | # KBUILD_IMAGE may be overruled on the command line or |
1da177e4 LT |
684 | # set in the environment |
685 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over | |
686 | # this default value | |
687 | export KBUILD_IMAGE ?= vmlinux | |
688 | ||
689 | # | |
690 | # INSTALL_PATH specifies where to place the updated kernel and system map | |
691 | # images. Default is /boot, but you can set it to other values | |
692 | export INSTALL_PATH ?= /boot | |
693 | ||
694 | # | |
695 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory | |
696 | # relocations required by build roots. This is not defined in the | |
070b98bf | 697 | # makefile but the argument can be passed to make if needed. |
1da177e4 LT |
698 | # |
699 | ||
df9df036 | 700 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4 LT |
701 | export MODLIB |
702 | ||
ac031f26 | 703 | # |
2ea03891 SR |
704 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
705 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then | |
706 | # the default option --strip-debug will be used. Otherwise, | |
177b241d | 707 | # INSTALL_MOD_STRIP value will be used as the options to the strip command. |
2ea03891 | 708 | |
ac031f26 TT |
709 | ifdef INSTALL_MOD_STRIP |
710 | ifeq ($(INSTALL_MOD_STRIP),1) | |
2ea03891 | 711 | mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26 | 712 | else |
2ea03891 | 713 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
ac031f26 TT |
714 | endif # INSTALL_MOD_STRIP=1 |
715 | else | |
2ea03891 | 716 | mod_strip_cmd = true |
ac031f26 TT |
717 | endif # INSTALL_MOD_STRIP |
718 | export mod_strip_cmd | |
719 | ||
1da177e4 | 720 | |
e2a666d5 RR |
721 | ifeq ($(CONFIG_MODULE_SIG),y) |
722 | MODSECKEY = ./signing_key.priv | |
723 | MODPUBKEY = ./signing_key.x509 | |
724 | export MODPUBKEY | |
b37d1bfb | 725 | mod_sign_cmd = perl $(srctree)/scripts/sign-file $(MODSECKEY) $(MODPUBKEY) |
e2a666d5 RR |
726 | else |
727 | mod_sign_cmd = true | |
728 | endif | |
729 | export mod_sign_cmd | |
730 | ||
731 | ||
1da177e4 | 732 | ifeq ($(KBUILD_EXTMOD),) |
3a65dfe8 | 733 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4 LT |
734 | |
735 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ | |
736 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ | |
737 | $(net-y) $(net-m) $(libs-y) $(libs-m))) | |
738 | ||
739 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ | |
740 | $(init-n) $(init-) \ | |
741 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ | |
742 | $(net-n) $(net-) $(libs-n) $(libs-)))) | |
743 | ||
744 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) | |
745 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) | |
746 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) | |
747 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) | |
748 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) | |
749 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) | |
750 | libs-y := $(libs-y1) $(libs-y2) | |
751 | ||
1f2bfbd0 | 752 | # Externally visible symbols (used by link-vmlinux.sh) |
95698570 SR |
753 | export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) |
754 | export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) | |
755 | export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds | |
1f2bfbd0 | 756 | export LDFLAGS_vmlinux |
9bb48247 | 757 | |
1f2bfbd0 | 758 | vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) |
1da177e4 | 759 | |
1f2bfbd0 SR |
760 | # Final link of vmlinux |
761 | cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) | |
762 | quiet_cmd_link-vmlinux = LINK $@ | |
1da177e4 | 763 | |
1f2bfbd0 SR |
764 | # Include targets which we want to |
765 | # execute if the rest of the kernel build went well. | |
766 | vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE | |
0f836e5f | 767 | ifdef CONFIG_HEADERS_CHECK |
0e7af8d0 | 768 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
267c4025 MD |
769 | endif |
770 | ifdef CONFIG_SAMPLES | |
771 | $(Q)$(MAKE) $(build)=samples | |
3794f3e8 RD |
772 | endif |
773 | ifdef CONFIG_BUILD_DOCSRC | |
774 | $(Q)$(MAKE) $(build)=Documentation | |
0f836e5f | 775 | endif |
1f2bfbd0 | 776 | +$(call if_changed,link-vmlinux) |
741f98fe | 777 | |
1da177e4 LT |
778 | # The actual objects are generated when descending, |
779 | # make sure no implicit rule kicks in | |
1f2bfbd0 | 780 | $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
1da177e4 LT |
781 | |
782 | # Handle descending into subdirectories listed in $(vmlinux-dirs) | |
783 | # Preset locale variables to speed up the build process. Limit locale | |
784 | # tweaks to this spot to avoid wrong language settings when running | |
785 | # make menuconfig etc. | |
786 | # Error messages still appears in the original language | |
787 | ||
4f193362 | 788 | PHONY += $(vmlinux-dirs) |
5bb78269 | 789 | $(vmlinux-dirs): prepare scripts |
1da177e4 LT |
790 | $(Q)$(MAKE) $(build)=$@ |
791 | ||
f1d28fb0 | 792 | # Store (new) KERNELRELASE string in include/config/kernel.release |
f1d28fb0 | 793 | include/config/kernel.release: include/config/auto.conf FORCE |
2244cbd8 | 794 | $(Q)rm -f $@ |
7263e715 | 795 | $(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@ |
cb58455c SR |
796 | |
797 | ||
1da177e4 | 798 | # Things we need to do before we recursively start building the kernel |
5bb78269 SR |
799 | # or the modules are listed in "prepare". |
800 | # A multi level approach is used. prepareN is processed before prepareN-1. | |
801 | # archprepare is used in arch Makefiles and when processed asm symlink, | |
802 | # version.h and scripts_basic is processed / created. | |
1da177e4 | 803 | |
5bb78269 | 804 | # Listed in dependency order |
4f193362 | 805 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb78269 | 806 | |
86feeaa8 | 807 | # prepare3 is used to check if we are building in a separate output directory, |
1da177e4 LT |
808 | # and if so do: |
809 | # 1) Check that make has not been executed in the kernel src $(srctree) | |
f1d28fb0 | 810 | prepare3: include/config/kernel.release |
1da177e4 | 811 | ifneq ($(KBUILD_SRC),) |
fd54f502 | 812 | @$(kecho) ' Using $(srctree) as source for kernel' |
c955ccaf | 813 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
5369f550 MM |
814 | echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ |
815 | echo >&2 " in the '$(srctree)' directory.";\ | |
1da177e4 LT |
816 | /bin/false; \ |
817 | fi; | |
1da177e4 LT |
818 | endif |
819 | ||
86feeaa8 | 820 | # prepare2 creates a makefile if using a separate output directory |
d8ecc5cd | 821 | prepare2: prepare3 outputmakefile asm-generic |
1da177e4 | 822 | |
d183e6f5 | 823 | prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ |
f7f16b77 | 824 | include/config/auto.conf |
7bb9d092 | 825 | $(cmd_crmodverdir) |
1da177e4 | 826 | |
6520fe55 | 827 | archprepare: archheaders archscripts prepare1 scripts_basic |
5bb78269 SR |
828 | |
829 | prepare0: archprepare FORCE | |
8d36a623 | 830 | $(Q)$(MAKE) $(build)=. |
86feeaa8 | 831 | |
1da177e4 | 832 | # All the preparing.. |
d395efb5 | 833 | prepare: prepare0 |
1da177e4 | 834 | |
1da177e4 LT |
835 | # Generate some files |
836 | # --------------------------------------------------------------------------- | |
837 | ||
838 | # KERNELRELEASE can change from a few different places, meaning version.h | |
839 | # needs to be updated, so this check is forced on all builds | |
840 | ||
841 | uts_len := 64 | |
63104eec SR |
842 | define filechk_utsrelease.h |
843 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ | |
844 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ | |
845 | exit 1; \ | |
846 | fi; \ | |
847 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) | |
848 | endef | |
1da177e4 LT |
849 | |
850 | define filechk_version.h | |
450c6076 JJ |
851 | (echo \#define LINUX_VERSION_CODE $(shell \ |
852 | expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ | |
63104eec | 853 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
1da177e4 LT |
854 | endef |
855 | ||
d183e6f5 | 856 | $(version_h): $(srctree)/Makefile FORCE |
1da177e4 LT |
857 | $(call filechk,version.h) |
858 | ||
273b281f | 859 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
63104eec SR |
860 | $(call filechk,utsrelease.h) |
861 | ||
179efcb4 VN |
862 | PHONY += headerdep |
863 | headerdep: | |
9663d989 PF |
864 | $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ |
865 | $(srctree)/scripts/headerdep.pl -I$(srctree)/include | |
179efcb4 | 866 | |
1da177e4 LT |
867 | # --------------------------------------------------------------------------- |
868 | ||
4f193362 | 869 | PHONY += depend dep |
1da177e4 LT |
870 | depend dep: |
871 | @echo '*** Warning: make $@ is unnecessary now.' | |
872 | ||
88ecf814 DW |
873 | # --------------------------------------------------------------------------- |
874 | # Firmware install | |
875 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware | |
876 | export INSTALL_FW_PATH | |
877 | ||
878 | PHONY += firmware_install | |
879 | firmware_install: FORCE | |
880 | @mkdir -p $(objtree)/firmware | |
881 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install | |
882 | ||
8d730cfb DW |
883 | # --------------------------------------------------------------------------- |
884 | # Kernel headers | |
8d730cfb | 885 | |
e6883b18 SR |
886 | #Default location for installed headers |
887 | export INSTALL_HDR_PATH = $(objtree)/usr | |
6d716275 | 888 | |
e6883b18 | 889 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
2fb9b1bd SR |
890 | |
891 | # If we do an all arch process set dst to asm-$(hdr-arch) | |
892 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) | |
e6883b18 | 893 | |
052ad274 PA |
894 | PHONY += archheaders |
895 | archheaders: | |
896 | ||
6520fe55 PA |
897 | PHONY += archscripts |
898 | archscripts: | |
899 | ||
e6883b18 | 900 | PHONY += __headers |
d183e6f5 | 901 | __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE |
e1b702cf | 902 | $(Q)$(MAKE) $(build)=scripts build_unifdef |
e6883b18 SR |
903 | |
904 | PHONY += headers_install_all | |
2fb9b1bd SR |
905 | headers_install_all: |
906 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install | |
6d716275 | 907 | |
8d730cfb | 908 | PHONY += headers_install |
e6883b18 | 909 | headers_install: __headers |
10b63956 DH |
910 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ |
911 | $(error Headers not exportable for the $(SRCARCH) architecture)) | |
912 | $(Q)$(MAKE) $(hdr-inst)=include/uapi | |
913 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) | |
8d730cfb | 914 | |
1f85712e MF |
915 | PHONY += headers_check_all |
916 | headers_check_all: headers_install_all | |
2fb9b1bd | 917 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
1f85712e | 918 | |
68475359 DW |
919 | PHONY += headers_check |
920 | headers_check: headers_install | |
10b63956 DH |
921 | $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 |
922 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 | |
68475359 | 923 | |
1da177e4 LT |
924 | # --------------------------------------------------------------------------- |
925 | # Modules | |
926 | ||
927 | ifdef CONFIG_MODULES | |
928 | ||
070b98bf | 929 | # By default, build modules as well |
1da177e4 | 930 | |
73d1393e | 931 | all: modules |
1da177e4 LT |
932 | |
933 | # Build modules | |
551559e1 TH |
934 | # |
935 | # A module can be listed more than once in obj-m resulting in | |
936 | # duplicate lines in modules.order files. Those are removed | |
937 | # using awk while concatenating to the final file. | |
1da177e4 | 938 | |
4f193362 | 939 | PHONY += modules |
2da30e70 | 940 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
551559e1 | 941 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
fd54f502 | 942 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 943 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
44463f7d | 944 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
1da177e4 | 945 | |
a6c36632 MM |
946 | modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
947 | $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin | |
948 | ||
73d1393e | 949 | %/modules.builtin: include/config/auto.conf |
a6c36632 MM |
950 | $(Q)$(MAKE) $(modbuiltin)=$* |
951 | ||
1da177e4 LT |
952 | |
953 | # Target to prepare building external modules | |
4f193362 | 954 | PHONY += modules_prepare |
5bb78269 | 955 | modules_prepare: prepare scripts |
1da177e4 LT |
956 | |
957 | # Target to install modules | |
4f193362 | 958 | PHONY += modules_install |
1da177e4 LT |
959 | modules_install: _modinst_ _modinst_post |
960 | ||
4f193362 | 961 | PHONY += _modinst_ |
2da30e70 | 962 | _modinst_: |
1da177e4 LT |
963 | @rm -rf $(MODLIB)/kernel |
964 | @rm -f $(MODLIB)/source | |
965 | @mkdir -p $(MODLIB)/kernel | |
966 | @ln -s $(srctree) $(MODLIB)/source | |
967 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ | |
968 | rm -f $(MODLIB)/build ; \ | |
969 | ln -s $(objtree) $(MODLIB)/build ; \ | |
970 | fi | |
551559e1 | 971 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
bc081dd6 | 972 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
b805aa0e | 973 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 974 | |
50a8ec31 | 975 | # This depmod is only for convenience to give the initial |
1da177e4 LT |
976 | # boot a modules.dep even before / is mounted read-write. However the |
977 | # boot script depmod is the master version. | |
4f193362 | 978 | PHONY += _modinst_post |
1da177e4 | 979 | _modinst_post: _modinst_ |
88ecf814 | 980 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
50a8ec31 | 981 | $(call cmd,depmod) |
1da177e4 | 982 | |
d890f510 JB |
983 | ifeq ($(CONFIG_MODULE_SIG), y) |
984 | PHONY += modules_sign | |
985 | modules_sign: | |
986 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign | |
987 | endif | |
988 | ||
1da177e4 LT |
989 | else # CONFIG_MODULES |
990 | ||
991 | # Modules not configured | |
992 | # --------------------------------------------------------------------------- | |
993 | ||
994 | modules modules_install: FORCE | |
5369f550 MM |
995 | @echo >&2 |
996 | @echo >&2 "The present kernel configuration has modules disabled." | |
997 | @echo >&2 "Type 'make config' and enable loadable module support." | |
998 | @echo >&2 "Then build a kernel with module support enabled." | |
999 | @echo >&2 | |
1da177e4 LT |
1000 | @exit 1 |
1001 | ||
1002 | endif # CONFIG_MODULES | |
1003 | ||
1da177e4 LT |
1004 | ### |
1005 | # Cleaning is done on three levels. | |
1006 | # make clean Delete most generated files | |
1007 | # Leave enough to build external modules | |
1008 | # make mrproper Delete the current configuration, and all generated files | |
1009 | # make distclean Remove editor backup files, patch leftover files and the like | |
1010 | ||
1011 | # Directories & files removed with 'make clean' | |
1012 | CLEAN_DIRS += $(MODVERDIR) | |
1da177e4 LT |
1013 | |
1014 | # Directories & files removed with 'make mrproper' | |
d8ecc5cd SR |
1015 | MRPROPER_DIRS += include/config usr/include include/generated \ |
1016 | arch/*/include/generated | |
d183e6f5 | 1017 | MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \ |
d5b71936 RR |
1018 | Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ |
1019 | signing_key.priv signing_key.x509 x509.genkey \ | |
1020 | extra_certificates signing_key.x509.keyid \ | |
1021 | signing_key.x509.signer | |
1da177e4 LT |
1022 | |
1023 | # clean - Delete most, but leave enough to build external modules | |
1024 | # | |
1025 | clean: rm-dirs := $(CLEAN_DIRS) | |
1026 | clean: rm-files := $(CLEAN_FILES) | |
fb68d4be | 1027 | clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) |
1da177e4 | 1028 | |
bd1ee804 | 1029 | PHONY += $(clean-dirs) clean archclean vmlinuxclean |
1da177e4 LT |
1030 | $(clean-dirs): |
1031 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1032 | ||
bd1ee804 PM |
1033 | vmlinuxclean: |
1034 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean | |
1035 | ||
1036 | clean: archclean vmlinuxclean | |
1da177e4 LT |
1037 | |
1038 | # mrproper - Delete all generated files, including .config | |
1039 | # | |
1040 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) | |
1041 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) | |
1042 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) | |
1043 | ||
4f193362 | 1044 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4 LT |
1045 | $(mrproper-dirs): |
1046 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) | |
1047 | ||
1048 | mrproper: clean archmrproper $(mrproper-dirs) | |
1049 | $(call cmd,rmdirs) | |
1050 | $(call cmd,rmfiles) | |
1051 | ||
1052 | # distclean | |
1053 | # | |
4f193362 | 1054 | PHONY += distclean |
1da177e4 LT |
1055 | |
1056 | distclean: mrproper | |
1057 | @find $(srctree) $(RCS_FIND_IGNORE) \ | |
070b98bf | 1058 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1da177e4 | 1059 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
f4b129f5 | 1060 | -o -name '.*.rej' \ |
1da177e4 LT |
1061 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
1062 | -type f -print | xargs rm -f | |
1063 | ||
1064 | ||
1065 | # Packaging of the kernel to various formats | |
1066 | # --------------------------------------------------------------------------- | |
1067 | # rpm target kept for backward compatibility | |
1068 | package-dir := $(srctree)/scripts/package | |
1069 | ||
bafb6747 ACM |
1070 | %src-pkg: FORCE |
1071 | $(Q)$(MAKE) $(build)=$(package-dir) $@ | |
031ecc6d | 1072 | %pkg: include/config/kernel.release FORCE |
6c2133e1 | 1073 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6d | 1074 | rpm: include/config/kernel.release FORCE |
6c2133e1 | 1075 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4 LT |
1076 | |
1077 | ||
1078 | # Brief documentation of the typical targets used | |
1079 | # --------------------------------------------------------------------------- | |
1080 | ||
5dffbe81 | 1081 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
1da177e4 | 1082 | boards := $(notdir $(boards)) |
5dffbe81 SB |
1083 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
1084 | board-dirs := $(sort $(notdir $(board-dirs:/=))) | |
1da177e4 LT |
1085 | |
1086 | help: | |
1087 | @echo 'Cleaning targets:' | |
5ea084ef | 1088 | @echo ' clean - Remove most generated files but keep the config and' |
5cc8d246 | 1089 | @echo ' enough build support to build external modules' |
5ea084ef | 1090 | @echo ' mrproper - Remove all generated files + config + various backup files' |
5cc8d246 | 1091 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4 LT |
1092 | @echo '' |
1093 | @echo 'Configuration targets:' | |
1094 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help | |
1095 | @echo '' | |
1096 | @echo 'Other generic targets:' | |
1097 | @echo ' all - Build all targets marked with [*]' | |
1098 | @echo '* vmlinux - Build the bare kernel' | |
1099 | @echo '* modules - Build all modules' | |
9cc5d74c | 1100 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
88ecf814 DW |
1101 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
1102 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' | |
1da177e4 | 1103 | @echo ' dir/ - Build all files in dir and below' |
62718979 JP |
1104 | @echo ' dir/file.[oisS] - Build specified target only' |
1105 | @echo ' dir/file.lst - Build specified mixed source/assembly target only' | |
1106 | @echo ' (requires a recent binutils and recent build (System.map))' | |
155ad605 | 1107 | @echo ' dir/file.ko - Build module including final link' |
c4d5ee67 | 1108 | @echo ' modules_prepare - Set up for building external modules' |
1da177e4 LT |
1109 | @echo ' tags/TAGS - Generate tags file for editors' |
1110 | @echo ' cscope - Generate cscope index' | |
f4ed1009 | 1111 | @echo ' gtags - Generate GNU GLOBAL index' |
6d128842 | 1112 | @echo ' kernelrelease - Output the release version string' |
cb58455c | 1113 | @echo ' kernelversion - Output the version stored in Makefile' |
2fb9b1bd | 1114 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
59df3230 | 1115 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
2fb9b1bd | 1116 | echo '' |
1da177e4 | 1117 | @echo 'Static analysers' |
1da177e4 LT |
1118 | @echo ' checkstack - Generate a list of stack hogs' |
1119 | @echo ' namespacecheck - Name space analysis on compiled kernel' | |
aa025e7d | 1120 | @echo ' versioncheck - Sanity check on version.h usage' |
ec2d987f | 1121 | @echo ' includecheck - Check for duplicate included header files' |
295ac051 | 1122 | @echo ' export_report - List the usages of all exported symbols' |
179efcb4 | 1123 | @echo ' headers_check - Sanity check on exported headers' |
74425eee NP |
1124 | @echo ' headerdep - Detect inclusion cycles in headers' |
1125 | @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help | |
1126 | @echo '' | |
1da177e4 | 1127 | @echo 'Kernel packaging:' |
6c2133e1 | 1128 | @$(MAKE) $(build)=$(package-dir) help |
1da177e4 LT |
1129 | @echo '' |
1130 | @echo 'Documentation targets:' | |
1131 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp | |
1132 | @echo '' | |
01dee188 | 1133 | @echo 'Architecture specific targets ($(SRCARCH)):' |
1da177e4 | 1134 | @$(if $(archhelp),$(archhelp),\ |
01dee188 | 1135 | echo ' No architecture specific help defined for $(SRCARCH)') |
1da177e4 LT |
1136 | @echo '' |
1137 | @$(if $(boards), \ | |
1138 | $(foreach b, $(boards), \ | |
1139 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ | |
1140 | echo '') | |
5dffbe81 SB |
1141 | @$(if $(board-dirs), \ |
1142 | $(foreach b, $(board-dirs), \ | |
1143 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ | |
1144 | printf " %-16s - Show all of the above\\n" help-boards; \ | |
1145 | echo '') | |
1da177e4 LT |
1146 | |
1147 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' | |
45d506bd | 1148 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4 | 1149 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
701842e3 DK |
1150 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
1151 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' | |
af07ce3e | 1152 | @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
28bc20dc SR |
1153 | @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' |
1154 | @echo ' 1: warnings which may be relevant and do not occur too often' | |
1155 | @echo ' 2: warnings which occur quite often but may still be relevant' | |
1156 | @echo ' 3: more obscure warnings, can most likely be ignored' | |
a6de553d | 1157 | @echo ' Multiple levels can be combined with W=12 or W=123' |
1da177e4 LT |
1158 | @echo '' |
1159 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' | |
1160 | @echo 'For further info see the ./README file' | |
1161 | ||
1162 | ||
5dffbe81 SB |
1163 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
1164 | ||
1165 | help-boards: $(help-board-dirs) | |
1166 | ||
1167 | boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) | |
1168 | ||
1169 | $(help-board-dirs): help-%: | |
1170 | @echo 'Architecture specific targets ($(SRCARCH) $*):' | |
1171 | @$(if $(boards-per-dir), \ | |
1172 | $(foreach b, $(boards-per-dir), \ | |
1173 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ | |
1174 | echo '') | |
1175 | ||
1176 | ||
1da177e4 LT |
1177 | # Documentation targets |
1178 | # --------------------------------------------------------------------------- | |
1179 | %docs: scripts_basic FORCE | |
bffd2020 | 1180 | $(Q)$(MAKE) $(build)=scripts build_docproc |
1da177e4 LT |
1181 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
1182 | ||
1183 | else # KBUILD_EXTMOD | |
1184 | ||
1185 | ### | |
1186 | # External module support. | |
1187 | # When building external modules the kernel used as basis is considered | |
1188 | # read-only, and no consistency checks are made and the make | |
1189 | # system is not used on the basis kernel. If updates are required | |
1190 | # in the basis kernel ordinary make commands (without M=...) must | |
1191 | # be used. | |
1192 | # | |
1193 | # The following are the only valid targets when building external | |
1194 | # modules. | |
1195 | # make M=dir clean Delete all automatically generated files | |
1196 | # make M=dir modules Make all modules in specified dir | |
1197 | # make M=dir Same as 'make M=dir modules' | |
1198 | # make M=dir modules_install | |
070b98bf | 1199 | # Install the modules built in the module directory |
1da177e4 LT |
1200 | # Assumes install directory is already created |
1201 | ||
1202 | # We are always building modules | |
1203 | KBUILD_MODULES := 1 | |
4f193362 | 1204 | PHONY += crmodverdir |
1da177e4 | 1205 | crmodverdir: |
7bb9d092 | 1206 | $(cmd_crmodverdir) |
1da177e4 | 1207 | |
4f193362 | 1208 | PHONY += $(objtree)/Module.symvers |
1da177e4 LT |
1209 | $(objtree)/Module.symvers: |
1210 | @test -e $(objtree)/Module.symvers || ( \ | |
1211 | echo; \ | |
1212 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ | |
1213 | echo " is missing; modules will have no dependencies and modversions."; \ | |
1214 | echo ) | |
1215 | ||
1216 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) | |
4f193362 | 1217 | PHONY += $(module-dirs) modules |
1da177e4 LT |
1218 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1219 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) | |
1220 | ||
1221 | modules: $(module-dirs) | |
fd54f502 | 1222 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1223 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4 | 1224 | |
4f193362 | 1225 | PHONY += modules_install |
a67dc21a | 1226 | modules_install: _emodinst_ _emodinst_post |
e6304663 | 1227 | |
4f193362 PS |
1228 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1229 | PHONY += _emodinst_ | |
a67dc21a | 1230 | _emodinst_: |
a67dc21a | 1231 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e | 1232 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1233 | |
4f193362 | 1234 | PHONY += _emodinst_post |
a67dc21a SR |
1235 | _emodinst_post: _emodinst_ |
1236 | $(call cmd,depmod) | |
1237 | ||
1da177e4 LT |
1238 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1239 | ||
4f193362 | 1240 | PHONY += $(clean-dirs) clean |
1da177e4 LT |
1241 | $(clean-dirs): |
1242 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1243 | ||
1244 | clean: rm-dirs := $(MODVERDIR) | |
88d7be03 | 1245 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
1da177e4 LT |
1246 | |
1247 | help: | |
1248 | @echo ' Building external modules.' | |
1249 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' | |
1250 | @echo '' | |
1251 | @echo ' modules - default target, build the module(s)' | |
1252 | @echo ' modules_install - install the module' | |
1253 | @echo ' clean - remove generated files in module directory only' | |
1254 | @echo '' | |
06300b21 SR |
1255 | |
1256 | # Dummies... | |
4f193362 | 1257 | PHONY += prepare scripts |
06300b21 SR |
1258 | prepare: ; |
1259 | scripts: ; | |
1da177e4 LT |
1260 | endif # KBUILD_EXTMOD |
1261 | ||
88d7be03 MM |
1262 | clean: $(clean-dirs) |
1263 | $(call cmd,rmdirs) | |
1264 | $(call cmd,rmfiles) | |
43f67c98 | 1265 | @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
88d7be03 | 1266 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
addbcdbb | 1267 | -o -name '*.ko.*' \ |
88d7be03 MM |
1268 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
1269 | -o -name '*.symtypes' -o -name 'modules.order' \ | |
1270 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ | |
1271 | -o -name '*.gcno' \) -type f -print | xargs rm -f | |
1272 | ||
1da177e4 LT |
1273 | # Generate tags for editors |
1274 | # --------------------------------------------------------------------------- | |
a680eedc SR |
1275 | quiet_cmd_tags = GEN $@ |
1276 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ | |
1da177e4 | 1277 | |
f4ed1009 | 1278 | tags TAGS cscope gtags: FORCE |
1da177e4 LT |
1279 | $(call cmd,tags) |
1280 | ||
1da177e4 LT |
1281 | # Scripts to check various things for consistency |
1282 | # --------------------------------------------------------------------------- | |
1283 | ||
279f3dd3 PF |
1284 | PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
1285 | ||
1da177e4 | 1286 | includecheck: |
436f876c | 1287 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4 | 1288 | -name '*.[hcS]' -type f -print | sort \ |
80007434 | 1289 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1da177e4 LT |
1290 | |
1291 | versioncheck: | |
2ee2d292 | 1292 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4 | 1293 | -name '*.[hcS]' -type f -print | sort \ |
80007434 | 1294 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1da177e4 | 1295 | |
74425eee NP |
1296 | coccicheck: |
1297 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ | |
1298 | ||
1da177e4 LT |
1299 | namespacecheck: |
1300 | $(PERL) $(srctree)/scripts/namespace.pl | |
1301 | ||
295ac051 AB |
1302 | export_report: |
1303 | $(PERL) $(srctree)/scripts/export_report.pl | |
1304 | ||
1da177e4 LT |
1305 | endif #ifeq ($(config-targets),1) |
1306 | endif #ifeq ($(mixed-targets),1) | |
1307 | ||
c30a02e0 | 1308 | PHONY += checkstack kernelrelease kernelversion |
e3ccf6e3 | 1309 | |
011e3a9a JD |
1310 | # UML needs a little special treatment here. It wants to use the host |
1311 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone | |
1312 | # else wants $(ARCH), including people doing cross-builds, which means | |
1313 | # that $(SUBARCH) doesn't work here. | |
1314 | ifeq ($(ARCH), um) | |
1315 | CHECKSTACK_ARCH := $(SUBARCH) | |
1316 | else | |
1317 | CHECKSTACK_ARCH := $(ARCH) | |
1318 | endif | |
1da177e4 LT |
1319 | checkstack: |
1320 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ | |
011e3a9a | 1321 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1da177e4 | 1322 | |
7b8ea53d AW |
1323 | kernelrelease: |
1324 | @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" | |
01ab1788 | 1325 | |
cb58455c | 1326 | kernelversion: |
2244cbd8 | 1327 | @echo $(KERNELVERSION) |
1da177e4 | 1328 | |
ea01fa9f BP |
1329 | # Clear a bunch of variables before executing the submake |
1330 | tools/: FORCE | |
bf35182f DH |
1331 | $(Q)mkdir -p $(objtree)/tools |
1332 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS= O=$(objtree) subdir=tools -C $(src)/tools/ | |
ea01fa9f BP |
1333 | |
1334 | tools/%: FORCE | |
bf35182f DH |
1335 | $(Q)mkdir -p $(objtree)/tools |
1336 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS= O=$(objtree) subdir=tools -C $(src)/tools/ $* | |
ea01fa9f | 1337 | |
06300b21 SR |
1338 | # Single targets |
1339 | # --------------------------------------------------------------------------- | |
bc2546a6 | 1340 | # Single targets are compatible with: |
e1b8513d | 1341 | # - build with mixed source and output |
bc2546a6 SR |
1342 | # - build with separate output dir 'make O=...' |
1343 | # - external modules | |
1344 | # | |
1345 | # target-dir => where to store outputfile | |
1346 | # build-dir => directory in kernel source tree to use | |
1347 | ||
1348 | ifeq ($(KBUILD_EXTMOD),) | |
aa360879 | 1349 | build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a6 SR |
1350 | target-dir = $(dir $@) |
1351 | else | |
1352 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) | |
1353 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) | |
1354 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) | |
1355 | endif | |
1356 | ||
f6ecebd6 | 1357 | %.s: %.c prepare scripts FORCE |
bc2546a6 | 1358 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1359 | %.i: %.c prepare scripts FORCE |
bc2546a6 | 1360 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1361 | %.o: %.c prepare scripts FORCE |
bc2546a6 | 1362 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1363 | %.lst: %.c prepare scripts FORCE |
bc2546a6 | 1364 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1365 | %.s: %.S prepare scripts FORCE |
bc2546a6 | 1366 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1367 | %.o: %.S prepare scripts FORCE |
bc2546a6 | 1368 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde675 AG |
1369 | %.symtypes: %.c prepare scripts FORCE |
1370 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | |
06300b21 | 1371 | |
bc2546a6 | 1372 | # Modules |
31110ebb SR |
1373 | /: prepare scripts FORCE |
1374 | $(cmd_crmodverdir) | |
1375 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ | |
1376 | $(build)=$(build-dir) | |
1377 | %/: prepare scripts FORCE | |
7bb9d092 | 1378 | $(cmd_crmodverdir) |
06300b21 | 1379 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 SR |
1380 | $(build)=$(build-dir) |
1381 | %.ko: prepare scripts FORCE | |
7bb9d092 | 1382 | $(cmd_crmodverdir) |
06300b21 | 1383 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 | 1384 | $(build)=$(build-dir) $(@:.ko=.o) |
b805aa0e | 1385 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21 | 1386 | |
1da177e4 LT |
1387 | # FIXME Should go into a make.lib or something |
1388 | # =========================================================================== | |
1389 | ||
1390 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) | |
1391 | cmd_rmdirs = rm -rf $(rm-dirs) | |
1392 | ||
1393 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) | |
1394 | cmd_rmfiles = rm -f $(rm-files) | |
1395 | ||
bc3c26fe | 1396 | # Run depmod only if we have System.map and depmod is executable |
50a8ec31 | 1397 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
569658dd MM |
1398 | cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
1399 | $(KERNELRELEASE) | |
50a8ec31 | 1400 | |
7bb9d092 | 1401 | # Create temporary dir for module support files |
ab19f879 SR |
1402 | # clean it up only when building all modules |
1403 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ | |
1404 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) | |
1da177e4 | 1405 | |
1da177e4 LT |
1406 | # read all saved command lines |
1407 | ||
1408 | targets := $(wildcard $(sort $(targets))) | |
1409 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | |
1410 | ||
1411 | ifneq ($(cmd_files),) | |
1412 | $(cmd_files): ; # Do not try to update included dependency files | |
1413 | include $(cmd_files) | |
1414 | endif | |
1415 | ||
1da177e4 LT |
1416 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
1417 | # Usage: | |
1418 | # $(Q)$(MAKE) $(clean)=dir | |
1419 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj | |
1420 | ||
1da177e4 LT |
1421 | endif # skip-makefile |
1422 | ||
4f193362 | 1423 | PHONY += FORCE |
1da177e4 | 1424 | FORCE: |
4f193362 | 1425 | |
4f193362 | 1426 | # Declare the contents of the .PHONY variable as phony. We keep that |
fe8d0a41 | 1427 | # information in a variable so we can use it in if_changed and friends. |
4f193362 | 1428 | .PHONY: $(PHONY) |