Commit | Line | Data |
---|---|---|
55922c9d LT |
1 | VERSION = 3 |
2 | PATCHLEVEL = 0 | |
3 | SUBLEVEL = 0 | |
620917de | 4 | EXTRAVERSION = -rc7 |
55922c9d | 5 | NAME = Sneaky Weasel |
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 |
0b35786d MM |
127 | $(Q)@: |
128 | ||
129 | sub-make: FORCE | |
23a45e2c SR |
130 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
131 | KBUILD_SRC=$(CURDIR) \ | |
0b35786d MM |
132 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
133 | $(filter-out _all sub-make,$(MAKECMDGOALS)) | |
1da177e4 LT |
134 | |
135 | # Leave processing to above invocation of make | |
136 | skip-makefile := 1 | |
137 | endif # ifneq ($(KBUILD_OUTPUT),) | |
138 | endif # ifeq ($(KBUILD_SRC),) | |
139 | ||
140 | # We process the rest of the Makefile if this is the final invocation of make | |
141 | ifeq ($(skip-makefile),) | |
142 | ||
143 | # If building an external module we do not care about the all: rule | |
144 | # but instead _all depend on modules | |
4f193362 | 145 | PHONY += all |
1da177e4 LT |
146 | ifeq ($(KBUILD_EXTMOD),) |
147 | _all: all | |
148 | else | |
149 | _all: modules | |
150 | endif | |
151 | ||
152 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) | |
1da177e4 LT |
153 | objtree := $(CURDIR) |
154 | src := $(srctree) | |
155 | obj := $(objtree) | |
156 | ||
0f558c33 | 157 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
1da177e4 | 158 | |
11294235 | 159 | export srctree objtree VPATH |
1da177e4 | 160 | |
1da177e4 LT |
161 | |
162 | # SUBARCH tells the usermode build what the underlying arch is. That is set | |
163 | # first, and if a usermode build is happening, the "ARCH=um" on the command | |
164 | # line overrides the setting of ARCH below. If a native build is happening, | |
165 | # then ARCH is assigned, getting whatever value it gets normally, and | |
166 | # SUBARCH is subsequently ignored. | |
167 | ||
168 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ | |
169 | -e s/arm.*/arm/ -e s/sa110/arm/ \ | |
39990b5e | 170 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
236b1957 | 171 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
3cc000b5 | 172 | -e s/sh[234].*/sh/ ) |
1da177e4 LT |
173 | |
174 | # Cross compiling and selecting different set of gcc/bin-utils | |
175 | # --------------------------------------------------------------------------- | |
176 | # | |
177 | # When performing cross compilation for other architectures ARCH shall be set | |
178 | # to the target architecture. (See arch/* for the possibilities). | |
179 | # ARCH can be set during invocation of make: | |
180 | # make ARCH=ia64 | |
181 | # Another way is to have ARCH set in the environment. | |
182 | # The default ARCH is the host where make is executed. | |
183 | ||
184 | # CROSS_COMPILE specify the prefix used for all executables used | |
185 | # during compilation. Only gcc and related bin-utils executables | |
186 | # are prefixed with $(CROSS_COMPILE). | |
187 | # CROSS_COMPILE can be set on the command line | |
188 | # make CROSS_COMPILE=ia64-linux- | |
189 | # Alternatively CROSS_COMPILE can be set in the environment. | |
84336466 RM |
190 | # A third alternative is to store a setting in .config so that plain |
191 | # "make" in the configured kernel build directory always uses that. | |
1da177e4 LT |
192 | # Default value for CROSS_COMPILE is not to prefix executables |
193 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile | |
4ce6efed | 194 | export KBUILD_BUILDHOST := $(SUBARCH) |
2331d1a6 | 195 | ARCH ?= $(SUBARCH) |
84336466 | 196 | CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
1da177e4 LT |
197 | |
198 | # Architecture as present in compile.h | |
6752ed90 TG |
199 | UTS_MACHINE := $(ARCH) |
200 | SRCARCH := $(ARCH) | |
1da177e4 | 201 | |
d746d647 SR |
202 | # Additional ARCH settings for x86 |
203 | ifeq ($(ARCH),i386) | |
204 | SRCARCH := x86 | |
205 | endif | |
206 | ifeq ($(ARCH),x86_64) | |
207 | SRCARCH := x86 | |
208 | endif | |
74b469f2 | 209 | |
5e538790 | 210 | # Additional ARCH settings for sparc |
e69f58c0 NK |
211 | ifeq ($(ARCH),sparc32) |
212 | SRCARCH := sparc | |
213 | endif | |
a439fe51 | 214 | ifeq ($(ARCH),sparc64) |
5e538790 | 215 | SRCARCH := sparc |
a439fe51 | 216 | endif |
2fb9b1bd | 217 | |
3cc000b5 PM |
218 | # Additional ARCH settings for sh |
219 | ifeq ($(ARCH),sh64) | |
220 | SRCARCH := sh | |
221 | endif | |
222 | ||
18aecc2b | 223 | # Additional ARCH settings for tile |
6738d321 CM |
224 | ifeq ($(ARCH),tilepro) |
225 | SRCARCH := tile | |
226 | endif | |
18aecc2b CM |
227 | ifeq ($(ARCH),tilegx) |
228 | SRCARCH := tile | |
229 | endif | |
230 | ||
5e538790 SR |
231 | # Where to locate arch specific headers |
232 | hdr-arch := $(SRCARCH) | |
233 | ||
49148020 SR |
234 | ifeq ($(ARCH),m68knommu) |
235 | hdr-arch := m68k | |
236 | endif | |
237 | ||
14cdd3c4 | 238 | KCONFIG_CONFIG ?= .config |
41263fc6 | 239 | export KCONFIG_CONFIG |
14cdd3c4 | 240 | |
1da177e4 LT |
241 | # SHELL used by kbuild |
242 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
243 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
244 | else echo sh; fi ; fi) | |
245 | ||
070b98bf SR |
246 | HOSTCC = gcc |
247 | HOSTCXX = g++ | |
25583d4b | 248 | HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer |
070b98bf | 249 | HOSTCXXFLAGS = -O2 |
1da177e4 | 250 | |
070b98bf SR |
251 | # Decide whether to build built-in, modular, or both. |
252 | # Normally, just do built-in. | |
1da177e4 LT |
253 | |
254 | KBUILD_MODULES := | |
255 | KBUILD_BUILTIN := 1 | |
256 | ||
257 | # If we have only "make modules", don't compile built-in objects. | |
258 | # When we're building modules with modversions, we need to consider | |
259 | # the built-in objects during the descend as well, in order to | |
070b98bf | 260 | # make sure the checksums are up to date before we record them. |
1da177e4 LT |
261 | |
262 | ifeq ($(MAKECMDGOALS),modules) | |
263 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) | |
264 | endif | |
265 | ||
266 | # If we have "make <whatever> modules", compile modules | |
267 | # in addition to whatever we do anyway. | |
268 | # Just "make" or "make all" shall build modules as well | |
269 | ||
270 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) | |
271 | KBUILD_MODULES := 1 | |
272 | endif | |
273 | ||
274 | ifeq ($(MAKECMDGOALS),) | |
275 | KBUILD_MODULES := 1 | |
276 | endif | |
277 | ||
e579d351 | 278 | export KBUILD_MODULES KBUILD_BUILTIN |
1da177e4 LT |
279 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
280 | ||
281 | # Beautify output | |
282 | # --------------------------------------------------------------------------- | |
283 | # | |
284 | # Normally, we echo the whole command before executing it. By making | |
285 | # that echo $($(quiet)$(cmd)), we now have the possibility to set | |
286 | # $(quiet) to choose other forms of output instead, e.g. | |
287 | # | |
288 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ | |
289 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | |
290 | # | |
291 | # If $(quiet) is empty, the whole command will be printed. | |
292 | # If it is set to "quiet_", only the short version will be printed. | |
070b98bf | 293 | # If it is set to "silent_", nothing will be printed at all, since |
1da177e4 LT |
294 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
295 | # | |
a58a414f | 296 | # A simple variant is to prefix commands with $(Q) - that's useful |
1da177e4 LT |
297 | # for commands that shall be hidden in non-verbose mode. |
298 | # | |
299 | # $(Q)ln $@ :< | |
300 | # | |
301 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. | |
302 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. | |
303 | ||
304 | ifeq ($(KBUILD_VERBOSE),1) | |
305 | quiet = | |
306 | Q = | |
307 | else | |
308 | quiet=quiet_ | |
309 | Q = @ | |
310 | endif | |
311 | ||
312 | # If the user is running make -s (silent mode), suppress echoing of | |
313 | # commands | |
314 | ||
315 | ifneq ($(findstring s,$(MAKEFLAGS)),) | |
316 | quiet=silent_ | |
317 | endif | |
318 | ||
319 | export quiet Q KBUILD_VERBOSE | |
320 | ||
1da177e4 LT |
321 | |
322 | # Look for make include files relative to root of kernel src | |
323 | MAKEFLAGS += --include-dir=$(srctree) | |
324 | ||
1cacc9ab SR |
325 | # We need some generic definitions (do not try to remake the file). |
326 | $(srctree)/scripts/Kbuild.include: ; | |
15964864 | 327 | include $(srctree)/scripts/Kbuild.include |
1da177e4 LT |
328 | |
329 | # Make variables (CC, etc...) | |
330 | ||
331 | AS = $(CROSS_COMPILE)as | |
332 | LD = $(CROSS_COMPILE)ld | |
333 | CC = $(CROSS_COMPILE)gcc | |
334 | CPP = $(CC) -E | |
335 | AR = $(CROSS_COMPILE)ar | |
336 | NM = $(CROSS_COMPILE)nm | |
337 | STRIP = $(CROSS_COMPILE)strip | |
338 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
339 | OBJDUMP = $(CROSS_COMPILE)objdump | |
340 | AWK = awk | |
341 | GENKSYMS = scripts/genksyms/genksyms | |
caa27b66 | 342 | INSTALLKERNEL := installkernel |
1da177e4 LT |
343 | DEPMOD = /sbin/depmod |
344 | KALLSYMS = scripts/kallsyms | |
345 | PERL = perl | |
346 | CHECK = sparse | |
347 | ||
80a7d1d9 HE |
348 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
349 | -Wbitwise -Wno-return-void $(CF) | |
6588169d SR |
350 | CFLAGS_MODULE = |
351 | AFLAGS_MODULE = | |
352 | LDFLAGS_MODULE = | |
1da177e4 LT |
353 | CFLAGS_KERNEL = |
354 | AFLAGS_KERNEL = | |
2521f2c2 | 355 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
1da177e4 LT |
356 | |
357 | ||
358 | # Use LINUXINCLUDE when you must reference the include/ directory. | |
359 | # Needed to be compatible with the O= option | |
d8ecc5cd SR |
360 | LINUXINCLUDE := -I$(srctree)/arch/$(hdr-arch)/include \ |
361 | -Iarch/$(hdr-arch)/include/generated -Iinclude \ | |
96f13045 | 362 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ |
264a2683 | 363 | -include include/generated/autoconf.h |
1da177e4 | 364 | |
d8672b40 | 365 | KBUILD_CPPFLAGS := -D__KERNEL__ |
1da177e4 | 366 | |
a0f97e06 | 367 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
94bed2a9 | 368 | -fno-strict-aliasing -fno-common \ |
a8735821 | 369 | -Werror-implicit-function-declaration \ |
a3ca86ae ET |
370 | -Wno-format-security \ |
371 | -fno-delete-null-pointer-checks | |
80c00ba9 SR |
372 | KBUILD_AFLAGS_KERNEL := |
373 | KBUILD_CFLAGS_KERNEL := | |
222d394d | 374 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
6588169d SR |
375 | KBUILD_AFLAGS_MODULE := -DMODULE |
376 | KBUILD_CFLAGS_MODULE := -DMODULE | |
377 | KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds | |
1da177e4 | 378 | |
f1d28fb0 RZ |
379 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
380 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) | |
cacd54ef | 381 | KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) |
cb58455c | 382 | |
070b98bf | 383 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
80ef88d6 | 384 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
caa27b66 SR |
385 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
386 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE | |
070b98bf | 387 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
1da177e4 | 388 | |
06c5040c | 389 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
2521f2c2 | 390 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
222d394d | 391 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
6588169d | 392 | export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
80c00ba9 | 393 | export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
40df759e | 394 | export KBUILD_ARFLAGS |
1da177e4 LT |
395 | |
396 | # When compiling out-of-tree modules, put MODVERDIR in the module | |
397 | # tree rather than in the kernel tree. The kernel tree might | |
398 | # even be read-only. | |
399 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions | |
400 | ||
1da177e4 LT |
401 | # Files to ignore in find ... statements |
402 | ||
406119f4 TM |
403 | RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o |
404 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git | |
1da177e4 LT |
405 | |
406 | # =========================================================================== | |
407 | # Rules shared between *config targets and build targets | |
408 | ||
409 | # Basic helpers built in scripts/ | |
4f193362 | 410 | PHONY += scripts_basic |
1da177e4 LT |
411 | scripts_basic: |
412 | $(Q)$(MAKE) $(build)=scripts/basic | |
638adb05 | 413 | $(Q)rm -f .tmp_quiet_recordmcount |
1da177e4 | 414 | |
cd05e6bd JB |
415 | # To avoid any implicit rule to kick in, define an empty command. |
416 | scripts/basic/%: scripts_basic ; | |
417 | ||
4f193362 | 418 | PHONY += outputmakefile |
fd5f0cd6 JB |
419 | # outputmakefile generates a Makefile in the output directory, if using a |
420 | # separate output directory. This allows convenient use of make in the | |
421 | # output directory. | |
1da177e4 | 422 | outputmakefile: |
fd5f0cd6 | 423 | ifneq ($(KBUILD_SRC),) |
92979997 | 424 | $(Q)ln -fsn $(srctree) source |
fd5f0cd6 JB |
425 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
426 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) | |
427 | endif | |
1da177e4 | 428 | |
d8ecc5cd SR |
429 | # Support for using generic headers in asm-generic |
430 | PHONY += asm-generic | |
431 | asm-generic: | |
432 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ | |
433 | obj=arch/$(SRCARCH)/include/generated/asm | |
434 | ||
1da177e4 LT |
435 | # To make sure we do not include .config for any of the *config targets |
436 | # catch them early, and hand them over to scripts/kconfig/Makefile | |
437 | # It is allowed to specify more targets when calling make, including | |
438 | # mixing *config targets and build targets. | |
070b98bf | 439 | # For example 'make oldconfig all'. |
1da177e4 LT |
440 | # Detect when mixed targets is specified, and make a second invocation |
441 | # of make so .config is not included in this case either (for *config). | |
442 | ||
3eb3c740 | 443 | no-dot-config-targets := clean mrproper distclean \ |
f4ed1009 | 444 | cscope gtags TAGS tags help %docs check% coccicheck \ |
3eb3c740 | 445 | include/linux/version.h headers_% \ |
4aed2fd8 | 446 | kernelversion %src-pkg |
1da177e4 LT |
447 | |
448 | config-targets := 0 | |
449 | mixed-targets := 0 | |
450 | dot-config := 1 | |
451 | ||
452 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
453 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
454 | dot-config := 0 | |
455 | endif | |
456 | endif | |
457 | ||
458 | ifeq ($(KBUILD_EXTMOD),) | |
459 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) | |
460 | config-targets := 1 | |
461 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) | |
462 | mixed-targets := 1 | |
463 | endif | |
464 | endif | |
465 | endif | |
466 | ||
467 | ifeq ($(mixed-targets),1) | |
468 | # =========================================================================== | |
469 | # We're called with mixed targets (*config and build targets). | |
470 | # Handle them one by one. | |
471 | ||
472 | %:: FORCE | |
473 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ | |
474 | ||
475 | else | |
476 | ifeq ($(config-targets),1) | |
477 | # =========================================================================== | |
478 | # *config targets only - make sure prerequisites are updated, and descend | |
479 | # in scripts/kconfig to make the *config target | |
480 | ||
481 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. | |
482 | # KBUILD_DEFCONFIG may point out an alternative default configuration | |
483 | # used for 'make defconfig' | |
74b469f2 | 484 | include $(srctree)/arch/$(SRCARCH)/Makefile |
61bee204 | 485 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
1da177e4 | 486 | |
31110ebb SR |
487 | config: scripts_basic outputmakefile FORCE |
488 | $(Q)mkdir -p include/linux include/config | |
489 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ | |
490 | ||
491 | %config: scripts_basic outputmakefile FORCE | |
c955ccaf | 492 | $(Q)mkdir -p include/linux include/config |
1da177e4 LT |
493 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
494 | ||
495 | else | |
496 | # =========================================================================== | |
497 | # Build targets only - this includes vmlinux, arch specific targets, clean | |
498 | # targets and others. In general all targets except *config targets. | |
499 | ||
500 | ifeq ($(KBUILD_EXTMOD),) | |
501 | # Additional helpers built in scripts/ | |
502 | # Carefully list dependencies so we do not try to build scripts twice | |
070b98bf | 503 | # in parallel |
4f193362 | 504 | PHONY += scripts |
bc081dd6 | 505 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf |
1da177e4 LT |
506 | $(Q)$(MAKE) $(build)=$(@) |
507 | ||
1da177e4 LT |
508 | # Objects we will link into vmlinux / subdirs we need to visit |
509 | init-y := init/ | |
4d2acfbf | 510 | drivers-y := drivers/ sound/ firmware/ |
1da177e4 LT |
511 | net-y := net/ |
512 | libs-y := lib/ | |
513 | core-y := usr/ | |
514 | endif # KBUILD_EXTMOD | |
515 | ||
516 | ifeq ($(dot-config),1) | |
9ee4e336 SR |
517 | # Read in config |
518 | -include include/config/auto.conf | |
1da177e4 | 519 | |
9ee4e336 | 520 | ifeq ($(KBUILD_EXTMOD),) |
1da177e4 LT |
521 | # Read in dependencies to all Kconfig* files, make sure to run |
522 | # oldconfig if changes are detected. | |
c955ccaf | 523 | -include include/config/auto.conf.cmd |
1da177e4 | 524 | |
1da177e4 | 525 | # To avoid any implicit rule to kick in, define an empty command |
14cdd3c4 | 526 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
1da177e4 | 527 | |
c955ccaf | 528 | # If .config is newer than include/config/auto.conf, someone tinkered |
752625cf | 529 | # with it and forgot to run make oldconfig. |
070b98bf | 530 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
752625cf | 531 | # we execute the config step to be sure to catch updated Kconfig files |
bc081dd6 | 532 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
1da177e4 | 533 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
3041e47e | 534 | else |
264a2683 | 535 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
9ee4e336 SR |
536 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
537 | PHONY += include/config/auto.conf | |
538 | ||
539 | include/config/auto.conf: | |
264a2683 | 540 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
9ee4e336 SR |
541 | echo; \ |
542 | echo " ERROR: Kernel configuration is invalid."; \ | |
264a2683 | 543 | echo " include/generated/autoconf.h or $@ are missing.";\ |
9ee4e336 SR |
544 | echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ |
545 | echo; \ | |
546 | /bin/false) | |
547 | ||
548 | endif # KBUILD_EXTMOD | |
c955ccaf | 549 | |
1da177e4 LT |
550 | else |
551 | # Dummy target needed, because used as prerequisite | |
c955ccaf | 552 | include/config/auto.conf: ; |
9ee4e336 | 553 | endif # $(dot-config) |
1da177e4 LT |
554 | |
555 | # The all: target is the default when no target is given on the | |
556 | # command line. | |
557 | # This allow a user to issue only 'make' to build a kernel including modules | |
c8447161 | 558 | # Defaults to vmlinux, but the arch makefile usually adds further targets |
1da177e4 LT |
559 | all: vmlinux |
560 | ||
561 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE | |
a0f97e06 | 562 | KBUILD_CFLAGS += -Os |
1da177e4 | 563 | else |
a0f97e06 | 564 | KBUILD_CFLAGS += -O2 |
1da177e4 LT |
565 | endif |
566 | ||
bef5b54b RB |
567 | include $(srctree)/arch/$(SRCARCH)/Makefile |
568 | ||
08f67461 | 569 | ifneq ($(CONFIG_FRAME_WARN),0) |
35bb5b1e AK |
570 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
571 | endif | |
572 | ||
e06b8b98 | 573 | # Force gcc to behave correct even for buggy distributions |
5d707e9c | 574 | ifndef CONFIG_CC_STACKPROTECTOR |
e06b8b98 | 575 | KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
5d707e9c | 576 | endif |
e06b8b98 | 577 | |
af0e5d56 DJ |
578 | # This warning generated too much noise in a regular build. |
579 | # Use make W=1 to enable this warning (see scripts/Makefile.build) | |
8417da6f | 580 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) |
af0e5d56 | 581 | |
1da177e4 | 582 | ifdef CONFIG_FRAME_POINTER |
a0f97e06 | 583 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
1da177e4 | 584 | else |
7e9501fd RV |
585 | # Some targets (ARM with Thumb2, for example), can't be built with frame |
586 | # pointers. For those, we don't have FUNCTION_TRACER automatically | |
587 | # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is | |
588 | # incompatible with -fomit-frame-pointer with current GCC, so we don't use | |
589 | # -fomit-frame-pointer with FUNCTION_TRACER. | |
590 | ifndef CONFIG_FUNCTION_TRACER | |
a0f97e06 | 591 | KBUILD_CFLAGS += -fomit-frame-pointer |
1da177e4 | 592 | endif |
7e9501fd | 593 | endif |
1da177e4 LT |
594 | |
595 | ifdef CONFIG_DEBUG_INFO | |
a0f97e06 | 596 | KBUILD_CFLAGS += -g |
222d394d | 597 | KBUILD_AFLAGS += -gdwarf-2 |
1da177e4 LT |
598 | endif |
599 | ||
d6f4ceb7 AK |
600 | ifdef CONFIG_DEBUG_INFO_REDUCED |
601 | KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) | |
602 | endif | |
603 | ||
606576ce | 604 | ifdef CONFIG_FUNCTION_TRACER |
16444a8a | 605 | KBUILD_CFLAGS += -pg |
72441cb1 | 606 | ifdef CONFIG_DYNAMIC_FTRACE |
cf4db259 | 607 | ifdef CONFIG_HAVE_C_RECORDMCOUNT |
72441cb1 SR |
608 | BUILD_C_RECORDMCOUNT := y |
609 | export BUILD_C_RECORDMCOUNT | |
610 | endif | |
611 | endif | |
16444a8a ACM |
612 | endif |
613 | ||
91341d4b SR |
614 | # We trigger additional mismatches with less inlining |
615 | ifdef CONFIG_DEBUG_SECTION_MISMATCH | |
616 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) | |
617 | endif | |
618 | ||
e8e69931 | 619 | # arch Makefile may override CC so keep this after arch Makefile is included |
e8f5bdb0 | 620 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
e8e69931 SR |
621 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
622 | ||
1da177e4 | 623 | # warn about C99 declaration after statement |
a0f97e06 | 624 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
1da177e4 | 625 | |
070b98bf | 626 | # disable pointer signed / unsigned warnings in gcc 4.0 |
8417da6f | 627 | KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
1da177e4 | 628 | |
fe8d0a41 | 629 | # disable invalid "can't wrap" optimizations for signed / pointers |
a137802e | 630 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
d0115552 | 631 | |
8f7f5c9f AK |
632 | # conserve stack if available |
633 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) | |
634 | ||
40df759e MM |
635 | # use the deterministic mode of AR if available |
636 | KBUILD_ARFLAGS := $(call ar-option,D) | |
637 | ||
bf5438fc JB |
638 | # check for 'asm goto' |
639 | ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) | |
640 | KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO | |
641 | endif | |
642 | ||
06c5040c | 643 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
69ee0b35 SR |
644 | # But warn user when we do so |
645 | warn-assign = \ | |
646 | $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") | |
647 | ||
648 | ifneq ($(KCPPFLAGS),) | |
649 | $(call warn-assign,CPPFLAGS) | |
650 | KBUILD_CPPFLAGS += $(KCPPFLAGS) | |
651 | endif | |
652 | ifneq ($(KAFLAGS),) | |
653 | $(call warn-assign,AFLAGS) | |
654 | KBUILD_AFLAGS += $(KAFLAGS) | |
655 | endif | |
656 | ifneq ($(KCFLAGS),) | |
657 | $(call warn-assign,CFLAGS) | |
658 | KBUILD_CFLAGS += $(KCFLAGS) | |
659 | endif | |
52bcc330 | 660 | |
18991197 RM |
661 | # Use --build-id when available. |
662 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ | |
f86fd306 | 663 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
6588169d | 664 | KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
18991197 RM |
665 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
666 | ||
5d7d18f5 | 667 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
d79a2719 | 668 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
5d7d18f5 DH |
669 | endif |
670 | ||
1da177e4 | 671 | # Default kernel image to build when no specific target is given. |
070b98bf | 672 | # KBUILD_IMAGE may be overruled on the command line or |
1da177e4 LT |
673 | # set in the environment |
674 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over | |
675 | # this default value | |
676 | export KBUILD_IMAGE ?= vmlinux | |
677 | ||
678 | # | |
679 | # INSTALL_PATH specifies where to place the updated kernel and system map | |
680 | # images. Default is /boot, but you can set it to other values | |
681 | export INSTALL_PATH ?= /boot | |
682 | ||
683 | # | |
684 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory | |
685 | # relocations required by build roots. This is not defined in the | |
070b98bf | 686 | # makefile but the argument can be passed to make if needed. |
1da177e4 LT |
687 | # |
688 | ||
df9df036 | 689 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4 LT |
690 | export MODLIB |
691 | ||
ac031f26 | 692 | # |
2ea03891 SR |
693 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
694 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then | |
695 | # the default option --strip-debug will be used. Otherwise, | |
177b241d | 696 | # INSTALL_MOD_STRIP value will be used as the options to the strip command. |
2ea03891 | 697 | |
ac031f26 TT |
698 | ifdef INSTALL_MOD_STRIP |
699 | ifeq ($(INSTALL_MOD_STRIP),1) | |
2ea03891 | 700 | mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26 | 701 | else |
2ea03891 | 702 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
ac031f26 TT |
703 | endif # INSTALL_MOD_STRIP=1 |
704 | else | |
2ea03891 | 705 | mod_strip_cmd = true |
ac031f26 TT |
706 | endif # INSTALL_MOD_STRIP |
707 | export mod_strip_cmd | |
708 | ||
1da177e4 LT |
709 | |
710 | ifeq ($(KBUILD_EXTMOD),) | |
3a65dfe8 | 711 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4 LT |
712 | |
713 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ | |
714 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ | |
715 | $(net-y) $(net-m) $(libs-y) $(libs-m))) | |
716 | ||
717 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ | |
718 | $(init-n) $(init-) \ | |
719 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ | |
720 | $(net-n) $(net-) $(libs-n) $(libs-)))) | |
721 | ||
722 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) | |
723 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) | |
724 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) | |
725 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) | |
726 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) | |
727 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) | |
728 | libs-y := $(libs-y1) $(libs-y2) | |
729 | ||
730 | # Build vmlinux | |
731 | # --------------------------------------------------------------------------- | |
070b98bf | 732 | # vmlinux is built from the objects selected by $(vmlinux-init) and |
1da177e4 | 733 | # $(vmlinux-main). Most are built-in.o files from top-level directories |
2462566f | 734 | # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. |
1da177e4 LT |
735 | # Ordering when linking is important, and $(vmlinux-init) must be first. |
736 | # | |
737 | # vmlinux | |
738 | # ^ | |
739 | # | | |
740 | # +-< $(vmlinux-init) | |
741 | # | +--< init/version.o + more | |
742 | # | | |
743 | # +--< $(vmlinux-main) | |
744 | # | +--< driver/built-in.o mm/built-in.o + more | |
745 | # | | |
746 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) | |
747 | # | |
748 | # vmlinux version (uname -v) cannot be updated during normal | |
749 | # descending-into-subdirs phase since we do not yet know if we need to | |
750 | # update vmlinux. | |
751 | # Therefore this step is delayed until just before final link of vmlinux - | |
752 | # except in the kallsyms case where it is done just before adding the | |
753 | # symbols to the kernel. | |
754 | # | |
755 | # System.map is generated to document addresses of all kernel symbols | |
756 | ||
757 | vmlinux-init := $(head-y) $(init-y) | |
758 | vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) | |
759 | vmlinux-all := $(vmlinux-init) $(vmlinux-main) | |
6752ed90 | 760 | vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds |
85bd2fdd | 761 | export KBUILD_VMLINUX_OBJS := $(vmlinux-all) |
1da177e4 LT |
762 | |
763 | # Rule to link vmlinux - also used during CONFIG_KALLSYMS | |
764 | # May be overridden by arch/$(ARCH)/Makefile | |
765 | quiet_cmd_vmlinux__ ?= LD $@ | |
766 | cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ | |
767 | -T $(vmlinux-lds) $(vmlinux-init) \ | |
768 | --start-group $(vmlinux-main) --end-group \ | |
741f98fe | 769 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) |
1da177e4 LT |
770 | |
771 | # Generate new vmlinux version | |
772 | quiet_cmd_vmlinux_version = GEN .version | |
773 | cmd_vmlinux_version = set -e; \ | |
4e25d8bb JB |
774 | if [ ! -r .version ]; then \ |
775 | rm -f .version; \ | |
776 | echo 1 >.version; \ | |
777 | else \ | |
778 | mv .version .old_version; \ | |
779 | expr 0$$(cat .old_version) + 1 >.version; \ | |
780 | fi; \ | |
1da177e4 LT |
781 | $(MAKE) $(build)=init |
782 | ||
783 | # Generate System.map | |
070b98bf | 784 | quiet_cmd_sysmap = SYSMAP |
1da177e4 LT |
785 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap |
786 | ||
787 | # Link of vmlinux | |
788 | # If CONFIG_KALLSYMS is set .version is already updated | |
789 | # Generate System.map and verify that the content is consistent | |
39ca371c MR |
790 | # Use + in front of the vmlinux_version rule to silent warning with make -j2 |
791 | # First command is ':' to allow us to use + in front of the rule | |
1da177e4 | 792 | define rule_vmlinux__ |
39ca371c | 793 | : |
1da177e4 LT |
794 | $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) |
795 | ||
796 | $(call cmd,vmlinux__) | |
797 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
798 | ||
4635281c SR |
799 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
800 | echo ' $($(quiet)cmd_sysmap) System.map' &&) \ | |
801 | $(cmd_sysmap) $@ System.map; \ | |
802 | if [ $$? -ne 0 ]; then \ | |
803 | rm -f $@; \ | |
804 | /bin/false; \ | |
1da177e4 LT |
805 | fi; |
806 | $(verify_kallsyms) | |
807 | endef | |
808 | ||
809 | ||
810 | ifdef CONFIG_KALLSYMS | |
811 | # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) | |
812 | # It's a three stage process: | |
813 | # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is | |
814 | # empty | |
815 | # Running kallsyms on that gives us .tmp_kallsyms1.o with | |
816 | # the right size - vmlinux version (uname -v) is updated during this step | |
817 | # o .tmp_vmlinux2 now has a __kallsyms section of the right size, | |
818 | # but due to the added section, some addresses have shifted. | |
819 | # From here, we generate a correct .tmp_kallsyms2.o | |
820 | # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. | |
821 | # o Verify that the System.map from vmlinux matches the map from | |
822 | # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. | |
1e2795a1 | 823 | # o If 'make KALLSYMS_EXTRA_PASS=1" was used, do an extra pass using |
1da177e4 LT |
824 | # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a |
825 | # temporary bypass to allow the kernel to be built while the | |
826 | # maintainers work out what went wrong with kallsyms. | |
827 | ||
1da177e4 | 828 | last_kallsyms := 2 |
1e2795a1 AB |
829 | |
830 | ifdef KALLSYMS_EXTRA_PASS | |
831 | ifneq ($(KALLSYMS_EXTRA_PASS),0) | |
832 | last_kallsyms := 3 | |
833 | endif | |
1da177e4 LT |
834 | endif |
835 | ||
836 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o | |
837 | ||
838 | define verify_kallsyms | |
4635281c SR |
839 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
840 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ | |
1da177e4 | 841 | $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map |
4635281c SR |
842 | $(Q)cmp -s System.map .tmp_System.map || \ |
843 | (echo Inconsistent kallsyms data; \ | |
1e2795a1 AB |
844 | echo This is a bug - please report about it; \ |
845 | echo Try "make KALLSYMS_EXTRA_PASS=1" as a workaround; \ | |
1da177e4 LT |
846 | rm .tmp_kallsyms* ; /bin/false ) |
847 | endef | |
848 | ||
849 | # Update vmlinux version before link | |
850 | # Use + in front of this rule to silent warning about make -j1 | |
72ba47c1 | 851 | # First command is ':' to allow us to use + in front of this rule |
1da177e4 LT |
852 | cmd_ksym_ld = $(cmd_vmlinux__) |
853 | define rule_ksym_ld | |
72ba47c1 | 854 | : |
1da177e4 LT |
855 | +$(call cmd,vmlinux_version) |
856 | $(call cmd,vmlinux__) | |
857 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
858 | endef | |
859 | ||
860 | # Generate .S file with all kernel symbols | |
861 | quiet_cmd_kallsyms = KSYM $@ | |
2ea03891 SR |
862 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ |
863 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ | |
9bb48247 | 864 | |
2ea03891 | 865 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE |
1da177e4 LT |
866 | $(call if_changed_dep,as_o_S) |
867 | ||
2ea03891 | 868 | .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) |
1da177e4 LT |
869 | $(call cmd,kallsyms) |
870 | ||
871 | # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version | |
2ea03891 SR |
872 | .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE |
873 | $(call if_changed_rule,ksym_ld) | |
1da177e4 | 874 | |
2ea03891 SR |
875 | .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE |
876 | $(call if_changed,vmlinux__) | |
1da177e4 | 877 | |
2ea03891 SR |
878 | .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE |
879 | $(call if_changed,vmlinux__) | |
1da177e4 LT |
880 | |
881 | # Needs to visit scripts/ before $(KALLSYMS) can be used. | |
882 | $(KALLSYMS): scripts ; | |
883 | ||
33bc25ea SR |
884 | # Generate some data for debugging strange kallsyms problems |
885 | debug_kallsyms: .tmp_map$(last_kallsyms) | |
886 | ||
887 | .tmp_map%: .tmp_vmlinux% FORCE | |
888 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ | |
889 | ||
890 | .tmp_map3: .tmp_map2 | |
891 | ||
892 | .tmp_map2: .tmp_map1 | |
893 | ||
1da177e4 LT |
894 | endif # ifdef CONFIG_KALLSYMS |
895 | ||
741f98fe SR |
896 | # Do modpost on a prelinked vmlinux. The finally linked vmlinux has |
897 | # relevant sections renamed as per the linker script. | |
898 | quiet_cmd_vmlinux-modpost = LD $@ | |
899 | cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ | |
900 | $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ | |
90ebd878 | 901 | $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) |
741f98fe SR |
902 | define rule_vmlinux-modpost |
903 | : | |
904 | +$(call cmd,vmlinux-modpost) | |
905 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ | |
906 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd | |
907 | endef | |
908 | ||
1da177e4 | 909 | # vmlinux image - including updated kernel symbols |
310f8243 | 910 | vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE |
0f836e5f | 911 | ifdef CONFIG_HEADERS_CHECK |
0e7af8d0 | 912 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
267c4025 MD |
913 | endif |
914 | ifdef CONFIG_SAMPLES | |
915 | $(Q)$(MAKE) $(build)=samples | |
3794f3e8 RD |
916 | endif |
917 | ifdef CONFIG_BUILD_DOCSRC | |
918 | $(Q)$(MAKE) $(build)=Documentation | |
0f836e5f | 919 | endif |
741f98fe | 920 | $(call vmlinux-modpost) |
1da177e4 | 921 | $(call if_changed_rule,vmlinux__) |
4e25d8bb | 922 | $(Q)rm -f .old_version |
1da177e4 | 923 | |
310f8243 | 924 | # build vmlinux.o first to catch section mismatch errors early |
cf87dcd1 SR |
925 | ifdef CONFIG_KALLSYMS |
926 | .tmp_vmlinux1: vmlinux.o | |
927 | endif | |
90ebd878 SR |
928 | |
929 | modpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) | |
930 | vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE | |
741f98fe SR |
931 | $(call if_changed_rule,vmlinux-modpost) |
932 | ||
1da177e4 LT |
933 | # The actual objects are generated when descending, |
934 | # make sure no implicit rule kicks in | |
935 | $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; | |
936 | ||
937 | # Handle descending into subdirectories listed in $(vmlinux-dirs) | |
938 | # Preset locale variables to speed up the build process. Limit locale | |
939 | # tweaks to this spot to avoid wrong language settings when running | |
940 | # make menuconfig etc. | |
941 | # Error messages still appears in the original language | |
942 | ||
4f193362 | 943 | PHONY += $(vmlinux-dirs) |
5bb78269 | 944 | $(vmlinux-dirs): prepare scripts |
1da177e4 LT |
945 | $(Q)$(MAKE) $(build)=$@ |
946 | ||
f1d28fb0 | 947 | # Store (new) KERNELRELASE string in include/config/kernel.release |
f1d28fb0 | 948 | include/config/kernel.release: include/config/auto.conf FORCE |
2244cbd8 | 949 | $(Q)rm -f $@ |
7263e715 | 950 | $(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@ |
cb58455c SR |
951 | |
952 | ||
1da177e4 | 953 | # Things we need to do before we recursively start building the kernel |
5bb78269 SR |
954 | # or the modules are listed in "prepare". |
955 | # A multi level approach is used. prepareN is processed before prepareN-1. | |
956 | # archprepare is used in arch Makefiles and when processed asm symlink, | |
957 | # version.h and scripts_basic is processed / created. | |
1da177e4 | 958 | |
5bb78269 | 959 | # Listed in dependency order |
4f193362 | 960 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb78269 | 961 | |
86feeaa8 | 962 | # prepare3 is used to check if we are building in a separate output directory, |
1da177e4 LT |
963 | # and if so do: |
964 | # 1) Check that make has not been executed in the kernel src $(srctree) | |
f1d28fb0 | 965 | prepare3: include/config/kernel.release |
1da177e4 | 966 | ifneq ($(KBUILD_SRC),) |
fd54f502 | 967 | @$(kecho) ' Using $(srctree) as source for kernel' |
c955ccaf | 968 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
1da177e4 LT |
969 | echo " $(srctree) is not clean, please run 'make mrproper'";\ |
970 | echo " in the '$(srctree)' directory.";\ | |
971 | /bin/false; \ | |
972 | fi; | |
1da177e4 LT |
973 | endif |
974 | ||
86feeaa8 | 975 | # prepare2 creates a makefile if using a separate output directory |
d8ecc5cd | 976 | prepare2: prepare3 outputmakefile asm-generic |
1da177e4 | 977 | |
273b281f | 978 | prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \ |
f7f16b77 | 979 | include/config/auto.conf |
7bb9d092 | 980 | $(cmd_crmodverdir) |
1da177e4 | 981 | |
5bb78269 SR |
982 | archprepare: prepare1 scripts_basic |
983 | ||
984 | prepare0: archprepare FORCE | |
8d36a623 | 985 | $(Q)$(MAKE) $(build)=. |
c53aeca0 | 986 | $(Q)$(MAKE) $(build)=. missing-syscalls |
86feeaa8 | 987 | |
1da177e4 | 988 | # All the preparing.. |
d395efb5 | 989 | prepare: prepare0 |
1da177e4 | 990 | |
1da177e4 LT |
991 | # Generate some files |
992 | # --------------------------------------------------------------------------- | |
993 | ||
994 | # KERNELRELEASE can change from a few different places, meaning version.h | |
995 | # needs to be updated, so this check is forced on all builds | |
996 | ||
997 | uts_len := 64 | |
63104eec SR |
998 | define filechk_utsrelease.h |
999 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ | |
1000 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ | |
1001 | exit 1; \ | |
1002 | fi; \ | |
1003 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) | |
1004 | endef | |
1da177e4 LT |
1005 | |
1006 | define filechk_version.h | |
63104eec | 1007 | (echo \#define LINUX_VERSION_CODE $(shell \ |
78d3bb44 | 1008 | expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ |
63104eec | 1009 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
1da177e4 LT |
1010 | endef |
1011 | ||
63104eec | 1012 | include/linux/version.h: $(srctree)/Makefile FORCE |
1da177e4 LT |
1013 | $(call filechk,version.h) |
1014 | ||
273b281f | 1015 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
63104eec SR |
1016 | $(call filechk,utsrelease.h) |
1017 | ||
179efcb4 VN |
1018 | PHONY += headerdep |
1019 | headerdep: | |
9663d989 PF |
1020 | $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ |
1021 | $(srctree)/scripts/headerdep.pl -I$(srctree)/include | |
179efcb4 | 1022 | |
1da177e4 LT |
1023 | # --------------------------------------------------------------------------- |
1024 | ||
4f193362 | 1025 | PHONY += depend dep |
1da177e4 LT |
1026 | depend dep: |
1027 | @echo '*** Warning: make $@ is unnecessary now.' | |
1028 | ||
88ecf814 DW |
1029 | # --------------------------------------------------------------------------- |
1030 | # Firmware install | |
1031 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware | |
1032 | export INSTALL_FW_PATH | |
1033 | ||
1034 | PHONY += firmware_install | |
1035 | firmware_install: FORCE | |
1036 | @mkdir -p $(objtree)/firmware | |
1037 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install | |
1038 | ||
8d730cfb DW |
1039 | # --------------------------------------------------------------------------- |
1040 | # Kernel headers | |
8d730cfb | 1041 | |
e6883b18 SR |
1042 | #Default location for installed headers |
1043 | export INSTALL_HDR_PATH = $(objtree)/usr | |
6d716275 | 1044 | |
e6883b18 | 1045 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
2fb9b1bd SR |
1046 | |
1047 | # If we do an all arch process set dst to asm-$(hdr-arch) | |
1048 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) | |
e6883b18 SR |
1049 | |
1050 | PHONY += __headers | |
d8ecc5cd | 1051 | __headers: include/linux/version.h scripts_basic asm-generic FORCE |
e1b702cf | 1052 | $(Q)$(MAKE) $(build)=scripts build_unifdef |
e6883b18 SR |
1053 | |
1054 | PHONY += headers_install_all | |
2fb9b1bd SR |
1055 | headers_install_all: |
1056 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install | |
6d716275 | 1057 | |
8d730cfb | 1058 | PHONY += headers_install |
e6883b18 | 1059 | headers_install: __headers |
c95fa08a | 1060 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \ |
2fb9b1bd | 1061 | $(error Headers not exportable for the $(SRCARCH) architecture)) |
88181ec3 | 1062 | $(Q)$(MAKE) $(hdr-inst)=include |
c95fa08a | 1063 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) |
8d730cfb | 1064 | |
1f85712e MF |
1065 | PHONY += headers_check_all |
1066 | headers_check_all: headers_install_all | |
2fb9b1bd | 1067 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
1f85712e | 1068 | |
68475359 DW |
1069 | PHONY += headers_check |
1070 | headers_check: headers_install | |
88181ec3 | 1071 | $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 |
c95fa08a | 1072 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1 |
68475359 | 1073 | |
1da177e4 LT |
1074 | # --------------------------------------------------------------------------- |
1075 | # Modules | |
1076 | ||
1077 | ifdef CONFIG_MODULES | |
1078 | ||
070b98bf | 1079 | # By default, build modules as well |
1da177e4 | 1080 | |
73d1393e | 1081 | all: modules |
1da177e4 LT |
1082 | |
1083 | # Build modules | |
551559e1 TH |
1084 | # |
1085 | # A module can be listed more than once in obj-m resulting in | |
1086 | # duplicate lines in modules.order files. Those are removed | |
1087 | # using awk while concatenating to the final file. | |
1da177e4 | 1088 | |
4f193362 | 1089 | PHONY += modules |
2da30e70 | 1090 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
551559e1 | 1091 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
fd54f502 | 1092 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1093 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
44463f7d | 1094 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
1da177e4 | 1095 | |
a6c36632 MM |
1096 | modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
1097 | $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin | |
1098 | ||
73d1393e | 1099 | %/modules.builtin: include/config/auto.conf |
a6c36632 MM |
1100 | $(Q)$(MAKE) $(modbuiltin)=$* |
1101 | ||
1da177e4 LT |
1102 | |
1103 | # Target to prepare building external modules | |
4f193362 | 1104 | PHONY += modules_prepare |
5bb78269 | 1105 | modules_prepare: prepare scripts |
1da177e4 LT |
1106 | |
1107 | # Target to install modules | |
4f193362 | 1108 | PHONY += modules_install |
1da177e4 LT |
1109 | modules_install: _modinst_ _modinst_post |
1110 | ||
4f193362 | 1111 | PHONY += _modinst_ |
2da30e70 | 1112 | _modinst_: |
1da177e4 LT |
1113 | @rm -rf $(MODLIB)/kernel |
1114 | @rm -f $(MODLIB)/source | |
1115 | @mkdir -p $(MODLIB)/kernel | |
1116 | @ln -s $(srctree) $(MODLIB)/source | |
1117 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ | |
1118 | rm -f $(MODLIB)/build ; \ | |
1119 | ln -s $(objtree) $(MODLIB)/build ; \ | |
1120 | fi | |
551559e1 | 1121 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
bc081dd6 | 1122 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
b805aa0e | 1123 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1124 | |
50a8ec31 | 1125 | # This depmod is only for convenience to give the initial |
1da177e4 LT |
1126 | # boot a modules.dep even before / is mounted read-write. However the |
1127 | # boot script depmod is the master version. | |
4f193362 | 1128 | PHONY += _modinst_post |
1da177e4 | 1129 | _modinst_post: _modinst_ |
88ecf814 | 1130 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
50a8ec31 | 1131 | $(call cmd,depmod) |
1da177e4 LT |
1132 | |
1133 | else # CONFIG_MODULES | |
1134 | ||
1135 | # Modules not configured | |
1136 | # --------------------------------------------------------------------------- | |
1137 | ||
1138 | modules modules_install: FORCE | |
1139 | @echo | |
1140 | @echo "The present kernel configuration has modules disabled." | |
1141 | @echo "Type 'make config' and enable loadable module support." | |
1142 | @echo "Then build a kernel with module support enabled." | |
1143 | @echo | |
1144 | @exit 1 | |
1145 | ||
1146 | endif # CONFIG_MODULES | |
1147 | ||
1da177e4 LT |
1148 | ### |
1149 | # Cleaning is done on three levels. | |
1150 | # make clean Delete most generated files | |
1151 | # Leave enough to build external modules | |
1152 | # make mrproper Delete the current configuration, and all generated files | |
1153 | # make distclean Remove editor backup files, patch leftover files and the like | |
1154 | ||
1155 | # Directories & files removed with 'make clean' | |
1156 | CLEAN_DIRS += $(MODVERDIR) | |
1157 | CLEAN_FILES += vmlinux System.map \ | |
1158 | .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map | |
1159 | ||
1160 | # Directories & files removed with 'make mrproper' | |
d8ecc5cd SR |
1161 | MRPROPER_DIRS += include/config usr/include include/generated \ |
1162 | arch/*/include/generated | |
f7f16b77 | 1163 | MRPROPER_FILES += .config .config.old .version .old_version \ |
264a2683 | 1164 | include/linux/version.h \ |
f4ed1009 | 1165 | Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS |
1da177e4 LT |
1166 | |
1167 | # clean - Delete most, but leave enough to build external modules | |
1168 | # | |
1169 | clean: rm-dirs := $(CLEAN_DIRS) | |
1170 | clean: rm-files := $(CLEAN_FILES) | |
c47f214a | 1171 | clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation) |
1da177e4 | 1172 | |
4f193362 | 1173 | PHONY += $(clean-dirs) clean archclean |
1da177e4 LT |
1174 | $(clean-dirs): |
1175 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1176 | ||
88d7be03 | 1177 | clean: archclean |
1da177e4 LT |
1178 | |
1179 | # mrproper - Delete all generated files, including .config | |
1180 | # | |
1181 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) | |
1182 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) | |
1183 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) | |
1184 | ||
4f193362 | 1185 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4 LT |
1186 | $(mrproper-dirs): |
1187 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) | |
1188 | ||
1189 | mrproper: clean archmrproper $(mrproper-dirs) | |
1190 | $(call cmd,rmdirs) | |
1191 | $(call cmd,rmfiles) | |
1192 | ||
1193 | # distclean | |
1194 | # | |
4f193362 | 1195 | PHONY += distclean |
1da177e4 LT |
1196 | |
1197 | distclean: mrproper | |
1198 | @find $(srctree) $(RCS_FIND_IGNORE) \ | |
070b98bf | 1199 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1da177e4 | 1200 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
070b98bf | 1201 | -o -name '.*.rej' -o -size 0 \ |
1da177e4 LT |
1202 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
1203 | -type f -print | xargs rm -f | |
1204 | ||
1205 | ||
1206 | # Packaging of the kernel to various formats | |
1207 | # --------------------------------------------------------------------------- | |
1208 | # rpm target kept for backward compatibility | |
1209 | package-dir := $(srctree)/scripts/package | |
1210 | ||
bafb6747 ACM |
1211 | %src-pkg: FORCE |
1212 | $(Q)$(MAKE) $(build)=$(package-dir) $@ | |
031ecc6d | 1213 | %pkg: include/config/kernel.release FORCE |
6c2133e1 | 1214 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6d | 1215 | rpm: include/config/kernel.release FORCE |
6c2133e1 | 1216 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4 LT |
1217 | |
1218 | ||
1219 | # Brief documentation of the typical targets used | |
1220 | # --------------------------------------------------------------------------- | |
1221 | ||
5dffbe81 | 1222 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
1da177e4 | 1223 | boards := $(notdir $(boards)) |
5dffbe81 SB |
1224 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
1225 | board-dirs := $(sort $(notdir $(board-dirs:/=))) | |
1da177e4 LT |
1226 | |
1227 | help: | |
1228 | @echo 'Cleaning targets:' | |
5ea084ef | 1229 | @echo ' clean - Remove most generated files but keep the config and' |
5cc8d246 | 1230 | @echo ' enough build support to build external modules' |
5ea084ef | 1231 | @echo ' mrproper - Remove all generated files + config + various backup files' |
5cc8d246 | 1232 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4 LT |
1233 | @echo '' |
1234 | @echo 'Configuration targets:' | |
1235 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help | |
1236 | @echo '' | |
1237 | @echo 'Other generic targets:' | |
1238 | @echo ' all - Build all targets marked with [*]' | |
1239 | @echo '* vmlinux - Build the bare kernel' | |
1240 | @echo '* modules - Build all modules' | |
9cc5d74c | 1241 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
88ecf814 DW |
1242 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
1243 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' | |
1da177e4 | 1244 | @echo ' dir/ - Build all files in dir and below' |
62718979 JP |
1245 | @echo ' dir/file.[oisS] - Build specified target only' |
1246 | @echo ' dir/file.lst - Build specified mixed source/assembly target only' | |
1247 | @echo ' (requires a recent binutils and recent build (System.map))' | |
155ad605 | 1248 | @echo ' dir/file.ko - Build module including final link' |
c4d5ee67 | 1249 | @echo ' modules_prepare - Set up for building external modules' |
1da177e4 LT |
1250 | @echo ' tags/TAGS - Generate tags file for editors' |
1251 | @echo ' cscope - Generate cscope index' | |
f4ed1009 | 1252 | @echo ' gtags - Generate GNU GLOBAL index' |
6d128842 | 1253 | @echo ' kernelrelease - Output the release version string' |
cb58455c | 1254 | @echo ' kernelversion - Output the version stored in Makefile' |
2fb9b1bd | 1255 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
59df3230 | 1256 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
2fb9b1bd | 1257 | echo '' |
1da177e4 | 1258 | @echo 'Static analysers' |
1da177e4 LT |
1259 | @echo ' checkstack - Generate a list of stack hogs' |
1260 | @echo ' namespacecheck - Name space analysis on compiled kernel' | |
aa025e7d | 1261 | @echo ' versioncheck - Sanity check on version.h usage' |
ec2d987f | 1262 | @echo ' includecheck - Check for duplicate included header files' |
295ac051 | 1263 | @echo ' export_report - List the usages of all exported symbols' |
179efcb4 | 1264 | @echo ' headers_check - Sanity check on exported headers' |
74425eee NP |
1265 | @echo ' headerdep - Detect inclusion cycles in headers' |
1266 | @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help | |
1267 | @echo '' | |
1da177e4 | 1268 | @echo 'Kernel packaging:' |
6c2133e1 | 1269 | @$(MAKE) $(build)=$(package-dir) help |
1da177e4 LT |
1270 | @echo '' |
1271 | @echo 'Documentation targets:' | |
1272 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp | |
1273 | @echo '' | |
01dee188 | 1274 | @echo 'Architecture specific targets ($(SRCARCH)):' |
1da177e4 | 1275 | @$(if $(archhelp),$(archhelp),\ |
01dee188 | 1276 | echo ' No architecture specific help defined for $(SRCARCH)') |
1da177e4 LT |
1277 | @echo '' |
1278 | @$(if $(boards), \ | |
1279 | $(foreach b, $(boards), \ | |
1280 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ | |
1281 | echo '') | |
5dffbe81 SB |
1282 | @$(if $(board-dirs), \ |
1283 | $(foreach b, $(board-dirs), \ | |
1284 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ | |
1285 | printf " %-16s - Show all of the above\\n" help-boards; \ | |
1286 | echo '') | |
1da177e4 LT |
1287 | |
1288 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' | |
45d506bd | 1289 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4 | 1290 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
701842e3 DK |
1291 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
1292 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' | |
28bc20dc SR |
1293 | @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' |
1294 | @echo ' 1: warnings which may be relevant and do not occur too often' | |
1295 | @echo ' 2: warnings which occur quite often but may still be relevant' | |
1296 | @echo ' 3: more obscure warnings, can most likely be ignored' | |
a6de553d | 1297 | @echo ' Multiple levels can be combined with W=12 or W=123' |
85356f80 | 1298 | @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
1da177e4 LT |
1299 | @echo '' |
1300 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' | |
1301 | @echo 'For further info see the ./README file' | |
1302 | ||
1303 | ||
5dffbe81 SB |
1304 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
1305 | ||
1306 | help-boards: $(help-board-dirs) | |
1307 | ||
1308 | boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) | |
1309 | ||
1310 | $(help-board-dirs): help-%: | |
1311 | @echo 'Architecture specific targets ($(SRCARCH) $*):' | |
1312 | @$(if $(boards-per-dir), \ | |
1313 | $(foreach b, $(boards-per-dir), \ | |
1314 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ | |
1315 | echo '') | |
1316 | ||
1317 | ||
1da177e4 LT |
1318 | # Documentation targets |
1319 | # --------------------------------------------------------------------------- | |
1320 | %docs: scripts_basic FORCE | |
bffd2020 | 1321 | $(Q)$(MAKE) $(build)=scripts build_docproc |
1da177e4 LT |
1322 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
1323 | ||
1324 | else # KBUILD_EXTMOD | |
1325 | ||
1326 | ### | |
1327 | # External module support. | |
1328 | # When building external modules the kernel used as basis is considered | |
1329 | # read-only, and no consistency checks are made and the make | |
1330 | # system is not used on the basis kernel. If updates are required | |
1331 | # in the basis kernel ordinary make commands (without M=...) must | |
1332 | # be used. | |
1333 | # | |
1334 | # The following are the only valid targets when building external | |
1335 | # modules. | |
1336 | # make M=dir clean Delete all automatically generated files | |
1337 | # make M=dir modules Make all modules in specified dir | |
1338 | # make M=dir Same as 'make M=dir modules' | |
1339 | # make M=dir modules_install | |
070b98bf | 1340 | # Install the modules built in the module directory |
1da177e4 LT |
1341 | # Assumes install directory is already created |
1342 | ||
1343 | # We are always building modules | |
1344 | KBUILD_MODULES := 1 | |
4f193362 | 1345 | PHONY += crmodverdir |
1da177e4 | 1346 | crmodverdir: |
7bb9d092 | 1347 | $(cmd_crmodverdir) |
1da177e4 | 1348 | |
4f193362 | 1349 | PHONY += $(objtree)/Module.symvers |
1da177e4 LT |
1350 | $(objtree)/Module.symvers: |
1351 | @test -e $(objtree)/Module.symvers || ( \ | |
1352 | echo; \ | |
1353 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ | |
1354 | echo " is missing; modules will have no dependencies and modversions."; \ | |
1355 | echo ) | |
1356 | ||
1357 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) | |
4f193362 | 1358 | PHONY += $(module-dirs) modules |
1da177e4 LT |
1359 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1360 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) | |
1361 | ||
1362 | modules: $(module-dirs) | |
fd54f502 | 1363 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1364 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4 | 1365 | |
4f193362 | 1366 | PHONY += modules_install |
a67dc21a | 1367 | modules_install: _emodinst_ _emodinst_post |
e6304663 | 1368 | |
4f193362 PS |
1369 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1370 | PHONY += _emodinst_ | |
a67dc21a | 1371 | _emodinst_: |
a67dc21a | 1372 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e | 1373 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1374 | |
4f193362 | 1375 | PHONY += _emodinst_post |
a67dc21a SR |
1376 | _emodinst_post: _emodinst_ |
1377 | $(call cmd,depmod) | |
1378 | ||
1da177e4 LT |
1379 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1380 | ||
4f193362 | 1381 | PHONY += $(clean-dirs) clean |
1da177e4 LT |
1382 | $(clean-dirs): |
1383 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1384 | ||
1385 | clean: rm-dirs := $(MODVERDIR) | |
88d7be03 | 1386 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
1da177e4 LT |
1387 | |
1388 | help: | |
1389 | @echo ' Building external modules.' | |
1390 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' | |
1391 | @echo '' | |
1392 | @echo ' modules - default target, build the module(s)' | |
1393 | @echo ' modules_install - install the module' | |
1394 | @echo ' clean - remove generated files in module directory only' | |
1395 | @echo '' | |
06300b21 SR |
1396 | |
1397 | # Dummies... | |
4f193362 | 1398 | PHONY += prepare scripts |
06300b21 SR |
1399 | prepare: ; |
1400 | scripts: ; | |
1da177e4 LT |
1401 | endif # KBUILD_EXTMOD |
1402 | ||
88d7be03 MM |
1403 | clean: $(clean-dirs) |
1404 | $(call cmd,rmdirs) | |
1405 | $(call cmd,rmfiles) | |
43f67c98 | 1406 | @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
88d7be03 MM |
1407 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
1408 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ | |
1409 | -o -name '*.symtypes' -o -name 'modules.order' \ | |
1410 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ | |
1411 | -o -name '*.gcno' \) -type f -print | xargs rm -f | |
1412 | ||
1da177e4 LT |
1413 | # Generate tags for editors |
1414 | # --------------------------------------------------------------------------- | |
a680eedc SR |
1415 | quiet_cmd_tags = GEN $@ |
1416 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ | |
1da177e4 | 1417 | |
f4ed1009 | 1418 | tags TAGS cscope gtags: FORCE |
1da177e4 LT |
1419 | $(call cmd,tags) |
1420 | ||
1da177e4 LT |
1421 | # Scripts to check various things for consistency |
1422 | # --------------------------------------------------------------------------- | |
1423 | ||
279f3dd3 PF |
1424 | PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
1425 | ||
1da177e4 | 1426 | includecheck: |
436f876c | 1427 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4 | 1428 | -name '*.[hcS]' -type f -print | sort \ |
80007434 | 1429 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1da177e4 LT |
1430 | |
1431 | versioncheck: | |
2ee2d292 | 1432 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4 | 1433 | -name '*.[hcS]' -type f -print | sort \ |
80007434 | 1434 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1da177e4 | 1435 | |
74425eee NP |
1436 | coccicheck: |
1437 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ | |
1438 | ||
1da177e4 LT |
1439 | namespacecheck: |
1440 | $(PERL) $(srctree)/scripts/namespace.pl | |
1441 | ||
295ac051 AB |
1442 | export_report: |
1443 | $(PERL) $(srctree)/scripts/export_report.pl | |
1444 | ||
1da177e4 LT |
1445 | endif #ifeq ($(config-targets),1) |
1446 | endif #ifeq ($(mixed-targets),1) | |
1447 | ||
c30a02e0 | 1448 | PHONY += checkstack kernelrelease kernelversion |
e3ccf6e3 | 1449 | |
011e3a9a JD |
1450 | # UML needs a little special treatment here. It wants to use the host |
1451 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone | |
1452 | # else wants $(ARCH), including people doing cross-builds, which means | |
1453 | # that $(SUBARCH) doesn't work here. | |
1454 | ifeq ($(ARCH), um) | |
1455 | CHECKSTACK_ARCH := $(SUBARCH) | |
1456 | else | |
1457 | CHECKSTACK_ARCH := $(ARCH) | |
1458 | endif | |
1da177e4 LT |
1459 | checkstack: |
1460 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ | |
011e3a9a | 1461 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1da177e4 | 1462 | |
7b8ea53d AW |
1463 | kernelrelease: |
1464 | @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" | |
01ab1788 | 1465 | |
cb58455c | 1466 | kernelversion: |
2244cbd8 | 1467 | @echo $(KERNELVERSION) |
1da177e4 | 1468 | |
06300b21 SR |
1469 | # Single targets |
1470 | # --------------------------------------------------------------------------- | |
bc2546a6 | 1471 | # Single targets are compatible with: |
e1b8513d | 1472 | # - build with mixed source and output |
bc2546a6 SR |
1473 | # - build with separate output dir 'make O=...' |
1474 | # - external modules | |
1475 | # | |
1476 | # target-dir => where to store outputfile | |
1477 | # build-dir => directory in kernel source tree to use | |
1478 | ||
1479 | ifeq ($(KBUILD_EXTMOD),) | |
aa360879 | 1480 | build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a6 SR |
1481 | target-dir = $(dir $@) |
1482 | else | |
1483 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) | |
1484 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) | |
1485 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) | |
1486 | endif | |
1487 | ||
f6ecebd6 | 1488 | %.s: %.c prepare scripts FORCE |
bc2546a6 | 1489 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1490 | %.i: %.c prepare scripts FORCE |
bc2546a6 | 1491 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1492 | %.o: %.c prepare scripts FORCE |
bc2546a6 | 1493 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1494 | %.lst: %.c prepare scripts FORCE |
bc2546a6 | 1495 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1496 | %.s: %.S prepare scripts FORCE |
bc2546a6 | 1497 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1498 | %.o: %.S prepare scripts FORCE |
bc2546a6 | 1499 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde675 AG |
1500 | %.symtypes: %.c prepare scripts FORCE |
1501 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | |
06300b21 | 1502 | |
bc2546a6 | 1503 | # Modules |
31110ebb SR |
1504 | /: prepare scripts FORCE |
1505 | $(cmd_crmodverdir) | |
1506 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ | |
1507 | $(build)=$(build-dir) | |
1508 | %/: prepare scripts FORCE | |
7bb9d092 | 1509 | $(cmd_crmodverdir) |
06300b21 | 1510 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 SR |
1511 | $(build)=$(build-dir) |
1512 | %.ko: prepare scripts FORCE | |
7bb9d092 | 1513 | $(cmd_crmodverdir) |
06300b21 | 1514 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 | 1515 | $(build)=$(build-dir) $(@:.ko=.o) |
b805aa0e | 1516 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21 | 1517 | |
1da177e4 LT |
1518 | # FIXME Should go into a make.lib or something |
1519 | # =========================================================================== | |
1520 | ||
1521 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) | |
1522 | cmd_rmdirs = rm -rf $(rm-dirs) | |
1523 | ||
1524 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) | |
1525 | cmd_rmfiles = rm -f $(rm-files) | |
1526 | ||