Commit | Line | Data |
---|---|---|
55922c9d | 1 | VERSION = 3 |
6ce4eac1 | 2 | PATCHLEVEL = 13 |
55922c9d | 3 | SUBLEVEL = 0 |
6ce4eac1 | 4 | EXTRAVERSION = -rc1 |
272b98c6 | 5 | NAME = One Giant Leap for Frogkind |
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 | |
ab7474ea BP |
25 | # Avoid interference with shell env settings |
26 | unexport GREP_OPTIONS | |
27 | ||
1da177e4 LT |
28 | # We are using a recursive build, so we need to do a little thinking |
29 | # to get the ordering right. | |
30 | # | |
31 | # Most importantly: sub-Makefiles should only ever modify files in | |
32 | # their own directory. If in some directory we have a dependency on | |
33 | # a file in another dir (which doesn't happen often, but it's often | |
34 | # unavoidable when linking the built-in.o targets which finally | |
35 | # turn into vmlinux), we will call a sub make in that other dir, and | |
36 | # after that we are sure that everything which is in that other dir | |
37 | # is now up to date. | |
38 | # | |
39 | # The only cases where we need to modify files which have global | |
40 | # effects are thus separated out and done before the recursive | |
41 | # descending is started. They are now explicitly listed as the | |
42 | # prepare rule. | |
43 | ||
44 | # To put more focus on warnings, be less verbose as default | |
45 | # Use 'make V=1' to see the full commands | |
46 | ||
b8b0618c CR |
47 | ifeq ("$(origin V)", "command line") |
48 | KBUILD_VERBOSE = $(V) | |
1da177e4 LT |
49 | endif |
50 | ifndef KBUILD_VERBOSE | |
51 | KBUILD_VERBOSE = 0 | |
52 | endif | |
53 | ||
1c7bafe7 RD |
54 | # Call a source code checker (by default, "sparse") as part of the |
55 | # C compilation. | |
56 | # | |
57 | # Use 'make C=1' to enable checking of only re-compiled files. | |
58 | # Use 'make C=2' to enable checking of *all* source files, regardless | |
59 | # of whether they are re-compiled or not. | |
60 | # | |
61 | # See the file "Documentation/sparse.txt" for more details, including | |
62 | # where to get the "sparse" utility. | |
1da177e4 | 63 | |
b8b0618c CR |
64 | ifeq ("$(origin C)", "command line") |
65 | KBUILD_CHECKSRC = $(C) | |
1da177e4 LT |
66 | endif |
67 | ifndef KBUILD_CHECKSRC | |
68 | KBUILD_CHECKSRC = 0 | |
69 | endif | |
70 | ||
71 | # Use make M=dir to specify directory of external module to build | |
72 | # Old syntax make ... SUBDIRS=$PWD is still supported | |
73 | # Setting the environment variable KBUILD_EXTMOD take precedence | |
74 | ifdef SUBDIRS | |
75 | KBUILD_EXTMOD ?= $(SUBDIRS) | |
76 | endif | |
1da177e4 | 77 | |
b8b0618c CR |
78 | ifeq ("$(origin M)", "command line") |
79 | KBUILD_EXTMOD := $(M) | |
80 | endif | |
1da177e4 LT |
81 | |
82 | # kbuild supports saving output files in a separate directory. | |
83 | # To locate output files in a separate directory two syntaxes are supported. | |
84 | # In both cases the working directory must be the root of the kernel src. | |
85 | # 1) O= | |
86 | # Use "make O=dir/to/store/output/files/" | |
070b98bf | 87 | # |
1da177e4 LT |
88 | # 2) Set KBUILD_OUTPUT |
89 | # Set the environment variable KBUILD_OUTPUT to point to the directory | |
90 | # where the output files shall be placed. | |
91 | # export KBUILD_OUTPUT=dir/to/store/output/files/ | |
92 | # make | |
93 | # | |
94 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment | |
95 | # variable. | |
96 | ||
97 | ||
98 | # KBUILD_SRC is set on invocation of make in OBJ directory | |
99 | # KBUILD_SRC is not intended to be used by the regular user (for now) | |
100 | ifeq ($(KBUILD_SRC),) | |
101 | ||
102 | # OK, Make called in directory where kernel src resides | |
103 | # Do we want to locate output files in a separate directory? | |
b8b0618c CR |
104 | ifeq ("$(origin O)", "command line") |
105 | KBUILD_OUTPUT := $(O) | |
1da177e4 LT |
106 | endif |
107 | ||
4a5838ad | 108 | ifeq ("$(origin W)", "command line") |
28bc20dc | 109 | export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) |
4a5838ad BP |
110 | endif |
111 | ||
1da177e4 | 112 | # That's our default target when none is given on the command line |
4f193362 | 113 | PHONY := _all |
1da177e4 LT |
114 | _all: |
115 | ||
1cacc9ab SR |
116 | # Cancel implicit rules on top Makefile |
117 | $(CURDIR)/Makefile Makefile: ; | |
118 | ||
1da177e4 LT |
119 | ifneq ($(KBUILD_OUTPUT),) |
120 | # Invoke a second make in the output directory, passing relevant variables | |
121 | # check that the output directory actually exists | |
122 | saved-output := $(KBUILD_OUTPUT) | |
123 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) | |
124 | $(if $(KBUILD_OUTPUT),, \ | |
125 | $(error output directory "$(saved-output)" does not exist)) | |
1da177e4 | 126 | |
0b35786d MM |
127 | PHONY += $(MAKECMDGOALS) sub-make |
128 | ||
1cacc9ab | 129 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
16f89098 | 130 | @: |
0b35786d MM |
131 | |
132 | sub-make: FORCE | |
23a45e2c SR |
133 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
134 | KBUILD_SRC=$(CURDIR) \ | |
0b35786d MM |
135 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
136 | $(filter-out _all sub-make,$(MAKECMDGOALS)) | |
1da177e4 LT |
137 | |
138 | # Leave processing to above invocation of make | |
139 | skip-makefile := 1 | |
140 | endif # ifneq ($(KBUILD_OUTPUT),) | |
141 | endif # ifeq ($(KBUILD_SRC),) | |
142 | ||
143 | # We process the rest of the Makefile if this is the final invocation of make | |
144 | ifeq ($(skip-makefile),) | |
145 | ||
146 | # If building an external module we do not care about the all: rule | |
147 | # but instead _all depend on modules | |
4f193362 | 148 | PHONY += all |
1da177e4 LT |
149 | ifeq ($(KBUILD_EXTMOD),) |
150 | _all: all | |
151 | else | |
152 | _all: modules | |
153 | endif | |
154 | ||
155 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) | |
1da177e4 LT |
156 | objtree := $(CURDIR) |
157 | src := $(srctree) | |
158 | obj := $(objtree) | |
159 | ||
0f558c33 | 160 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
1da177e4 | 161 | |
11294235 | 162 | export srctree objtree VPATH |
1da177e4 | 163 | |
1da177e4 LT |
164 | |
165 | # SUBARCH tells the usermode build what the underlying arch is. That is set | |
166 | # first, and if a usermode build is happening, the "ARCH=um" on the command | |
167 | # line overrides the setting of ARCH below. If a native build is happening, | |
168 | # then ARCH is assigned, getting whatever value it gets normally, and | |
169 | # SUBARCH is subsequently ignored. | |
170 | ||
ffee0de4 DW |
171 | SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ |
172 | -e s/sun4u/sparc64/ \ | |
1da177e4 | 173 | -e s/arm.*/arm/ -e s/sa110/arm/ \ |
39990b5e | 174 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
236b1957 | 175 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
f1b99392 | 176 | -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) |
1da177e4 LT |
177 | |
178 | # Cross compiling and selecting different set of gcc/bin-utils | |
179 | # --------------------------------------------------------------------------- | |
180 | # | |
181 | # When performing cross compilation for other architectures ARCH shall be set | |
182 | # to the target architecture. (See arch/* for the possibilities). | |
183 | # ARCH can be set during invocation of make: | |
184 | # make ARCH=ia64 | |
185 | # Another way is to have ARCH set in the environment. | |
186 | # The default ARCH is the host where make is executed. | |
187 | ||
188 | # CROSS_COMPILE specify the prefix used for all executables used | |
189 | # during compilation. Only gcc and related bin-utils executables | |
190 | # are prefixed with $(CROSS_COMPILE). | |
191 | # CROSS_COMPILE can be set on the command line | |
192 | # make CROSS_COMPILE=ia64-linux- | |
193 | # Alternatively CROSS_COMPILE can be set in the environment. | |
84336466 RM |
194 | # A third alternative is to store a setting in .config so that plain |
195 | # "make" in the configured kernel build directory always uses that. | |
1da177e4 LT |
196 | # Default value for CROSS_COMPILE is not to prefix executables |
197 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile | |
2331d1a6 | 198 | ARCH ?= $(SUBARCH) |
84336466 | 199 | CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
1da177e4 LT |
200 | |
201 | # Architecture as present in compile.h | |
6752ed90 TG |
202 | UTS_MACHINE := $(ARCH) |
203 | SRCARCH := $(ARCH) | |
1da177e4 | 204 | |
d746d647 SR |
205 | # Additional ARCH settings for x86 |
206 | ifeq ($(ARCH),i386) | |
207 | SRCARCH := x86 | |
208 | endif | |
209 | ifeq ($(ARCH),x86_64) | |
210 | SRCARCH := x86 | |
211 | endif | |
74b469f2 | 212 | |
5e538790 | 213 | # Additional ARCH settings for sparc |
e69f58c0 NK |
214 | ifeq ($(ARCH),sparc32) |
215 | SRCARCH := sparc | |
216 | endif | |
a439fe51 | 217 | ifeq ($(ARCH),sparc64) |
5e538790 | 218 | SRCARCH := sparc |
a439fe51 | 219 | endif |
2fb9b1bd | 220 | |
3cc000b5 PM |
221 | # Additional ARCH settings for sh |
222 | ifeq ($(ARCH),sh64) | |
223 | SRCARCH := sh | |
224 | endif | |
225 | ||
18aecc2b | 226 | # Additional ARCH settings for tile |
6738d321 CM |
227 | ifeq ($(ARCH),tilepro) |
228 | SRCARCH := tile | |
229 | endif | |
18aecc2b CM |
230 | ifeq ($(ARCH),tilegx) |
231 | SRCARCH := tile | |
232 | endif | |
233 | ||
5e538790 SR |
234 | # Where to locate arch specific headers |
235 | hdr-arch := $(SRCARCH) | |
236 | ||
14cdd3c4 | 237 | KCONFIG_CONFIG ?= .config |
41263fc6 | 238 | export KCONFIG_CONFIG |
14cdd3c4 | 239 | |
1da177e4 LT |
240 | # SHELL used by kbuild |
241 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
242 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
243 | else echo sh; fi ; fi) | |
244 | ||
070b98bf SR |
245 | HOSTCC = gcc |
246 | HOSTCXX = g++ | |
25583d4b | 247 | HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer |
070b98bf | 248 | HOSTCXXFLAGS = -O2 |
1da177e4 | 249 | |
070b98bf SR |
250 | # Decide whether to build built-in, modular, or both. |
251 | # Normally, just do built-in. | |
1da177e4 LT |
252 | |
253 | KBUILD_MODULES := | |
254 | KBUILD_BUILTIN := 1 | |
255 | ||
256 | # If we have only "make modules", don't compile built-in objects. | |
257 | # When we're building modules with modversions, we need to consider | |
258 | # the built-in objects during the descend as well, in order to | |
070b98bf | 259 | # make sure the checksums are up to date before we record them. |
1da177e4 LT |
260 | |
261 | ifeq ($(MAKECMDGOALS),modules) | |
262 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) | |
263 | endif | |
264 | ||
265 | # If we have "make <whatever> modules", compile modules | |
266 | # in addition to whatever we do anyway. | |
267 | # Just "make" or "make all" shall build modules as well | |
268 | ||
269 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) | |
270 | KBUILD_MODULES := 1 | |
271 | endif | |
272 | ||
273 | ifeq ($(MAKECMDGOALS),) | |
274 | KBUILD_MODULES := 1 | |
275 | endif | |
276 | ||
e579d351 | 277 | export KBUILD_MODULES KBUILD_BUILTIN |
1da177e4 LT |
278 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
279 | ||
280 | # Beautify output | |
281 | # --------------------------------------------------------------------------- | |
282 | # | |
283 | # Normally, we echo the whole command before executing it. By making | |
284 | # that echo $($(quiet)$(cmd)), we now have the possibility to set | |
285 | # $(quiet) to choose other forms of output instead, e.g. | |
286 | # | |
287 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ | |
288 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | |
289 | # | |
290 | # If $(quiet) is empty, the whole command will be printed. | |
291 | # If it is set to "quiet_", only the short version will be printed. | |
070b98bf | 292 | # If it is set to "silent_", nothing will be printed at all, since |
1da177e4 LT |
293 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
294 | # | |
a58a414f | 295 | # A simple variant is to prefix commands with $(Q) - that's useful |
1da177e4 LT |
296 | # for commands that shall be hidden in non-verbose mode. |
297 | # | |
298 | # $(Q)ln $@ :< | |
299 | # | |
300 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. | |
301 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. | |
302 | ||
303 | ifeq ($(KBUILD_VERBOSE),1) | |
304 | quiet = | |
305 | Q = | |
306 | else | |
307 | quiet=quiet_ | |
308 | Q = @ | |
309 | endif | |
310 | ||
311 | # If the user is running make -s (silent mode), suppress echoing of | |
312 | # commands | |
313 | ||
e6ac89fa | 314 | ifneq ($(filter s% -s%,$(MAKEFLAGS)),) |
1da177e4 LT |
315 | quiet=silent_ |
316 | endif | |
317 | ||
318 | export quiet Q KBUILD_VERBOSE | |
319 | ||
1da177e4 LT |
320 | |
321 | # Look for make include files relative to root of kernel src | |
322 | MAKEFLAGS += --include-dir=$(srctree) | |
323 | ||
1cacc9ab SR |
324 | # We need some generic definitions (do not try to remake the file). |
325 | $(srctree)/scripts/Kbuild.include: ; | |
15964864 | 326 | include $(srctree)/scripts/Kbuild.include |
1da177e4 LT |
327 | |
328 | # Make variables (CC, etc...) | |
329 | ||
330 | AS = $(CROSS_COMPILE)as | |
331 | LD = $(CROSS_COMPILE)ld | |
332 | CC = $(CROSS_COMPILE)gcc | |
333 | CPP = $(CC) -E | |
334 | AR = $(CROSS_COMPILE)ar | |
335 | NM = $(CROSS_COMPILE)nm | |
336 | STRIP = $(CROSS_COMPILE)strip | |
337 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
338 | OBJDUMP = $(CROSS_COMPILE)objdump | |
339 | AWK = awk | |
340 | GENKSYMS = scripts/genksyms/genksyms | |
caa27b66 | 341 | INSTALLKERNEL := installkernel |
1da177e4 | 342 | DEPMOD = /sbin/depmod |
1da177e4 LT |
343 | PERL = perl |
344 | CHECK = sparse | |
345 | ||
80a7d1d9 HE |
346 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
347 | -Wbitwise -Wno-return-void $(CF) | |
6588169d SR |
348 | CFLAGS_MODULE = |
349 | AFLAGS_MODULE = | |
350 | LDFLAGS_MODULE = | |
1da177e4 LT |
351 | CFLAGS_KERNEL = |
352 | AFLAGS_KERNEL = | |
2521f2c2 | 353 | CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
1da177e4 LT |
354 | |
355 | ||
abbf1590 DH |
356 | # Use USERINCLUDE when you must reference the UAPI directories only. |
357 | USERINCLUDE := \ | |
358 | -I$(srctree)/arch/$(hdr-arch)/include/uapi \ | |
359 | -Iarch/$(hdr-arch)/include/generated/uapi \ | |
360 | -I$(srctree)/include/uapi \ | |
361 | -Iinclude/generated/uapi \ | |
362 | -include $(srctree)/include/linux/kconfig.h | |
363 | ||
1da177e4 LT |
364 | # Use LINUXINCLUDE when you must reference the include/ directory. |
365 | # Needed to be compatible with the O= option | |
abbf1590 DH |
366 | LINUXINCLUDE := \ |
367 | -I$(srctree)/arch/$(hdr-arch)/include \ | |
368 | -Iarch/$(hdr-arch)/include/generated \ | |
369 | $(if $(KBUILD_SRC), -I$(srctree)/include) \ | |
370 | -Iinclude \ | |
371 | $(USERINCLUDE) | |
1da177e4 | 372 | |
d8672b40 | 373 | KBUILD_CPPFLAGS := -D__KERNEL__ |
1da177e4 | 374 | |
a0f97e06 | 375 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
94bed2a9 | 376 | -fno-strict-aliasing -fno-common \ |
a8735821 | 377 | -Werror-implicit-function-declaration \ |
a3ca86ae ET |
378 | -Wno-format-security \ |
379 | -fno-delete-null-pointer-checks | |
80c00ba9 SR |
380 | KBUILD_AFLAGS_KERNEL := |
381 | KBUILD_CFLAGS_KERNEL := | |
222d394d | 382 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
6588169d SR |
383 | KBUILD_AFLAGS_MODULE := -DMODULE |
384 | KBUILD_CFLAGS_MODULE := -DMODULE | |
385 | KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds | |
1da177e4 | 386 | |
f1d28fb0 RZ |
387 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
388 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) | |
cacd54ef | 389 | KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) |
cb58455c | 390 | |
070b98bf | 391 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
80ef88d6 | 392 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
caa27b66 SR |
393 | export CPP AR NM STRIP OBJCOPY OBJDUMP |
394 | export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE | |
070b98bf | 395 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
1da177e4 | 396 | |
06c5040c | 397 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
2521f2c2 | 398 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
222d394d | 399 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
6588169d | 400 | export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
80c00ba9 | 401 | export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
40df759e | 402 | export KBUILD_ARFLAGS |
1da177e4 LT |
403 | |
404 | # When compiling out-of-tree modules, put MODVERDIR in the module | |
405 | # tree rather than in the kernel tree. The kernel tree might | |
406 | # even be read-only. | |
407 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions | |
408 | ||
1da177e4 LT |
409 | # Files to ignore in find ... statements |
410 | ||
450c6076 JJ |
411 | RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \ |
412 | -o -name .pc -o -name .hg -o -name .git \) -prune -o | |
413 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ | |
414 | --exclude CVS --exclude .pc --exclude .hg --exclude .git | |
1da177e4 LT |
415 | |
416 | # =========================================================================== | |
417 | # Rules shared between *config targets and build targets | |
418 | ||
419 | # Basic helpers built in scripts/ | |
4f193362 | 420 | PHONY += scripts_basic |
1da177e4 LT |
421 | scripts_basic: |
422 | $(Q)$(MAKE) $(build)=scripts/basic | |
638adb05 | 423 | $(Q)rm -f .tmp_quiet_recordmcount |
1da177e4 | 424 | |
cd05e6bd JB |
425 | # To avoid any implicit rule to kick in, define an empty command. |
426 | scripts/basic/%: scripts_basic ; | |
427 | ||
4f193362 | 428 | PHONY += outputmakefile |
fd5f0cd6 JB |
429 | # outputmakefile generates a Makefile in the output directory, if using a |
430 | # separate output directory. This allows convenient use of make in the | |
431 | # output directory. | |
1da177e4 | 432 | outputmakefile: |
fd5f0cd6 | 433 | ifneq ($(KBUILD_SRC),) |
92979997 | 434 | $(Q)ln -fsn $(srctree) source |
fd5f0cd6 JB |
435 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
436 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) | |
437 | endif | |
1da177e4 | 438 | |
d8ecc5cd SR |
439 | # Support for using generic headers in asm-generic |
440 | PHONY += asm-generic | |
441 | asm-generic: | |
442 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ | |
3c5994c8 CM |
443 | src=asm obj=arch/$(SRCARCH)/include/generated/asm |
444 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ | |
445 | src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm | |
d8ecc5cd | 446 | |
1da177e4 LT |
447 | # To make sure we do not include .config for any of the *config targets |
448 | # catch them early, and hand them over to scripts/kconfig/Makefile | |
449 | # It is allowed to specify more targets when calling make, including | |
450 | # mixing *config targets and build targets. | |
070b98bf | 451 | # For example 'make oldconfig all'. |
1da177e4 LT |
452 | # Detect when mixed targets is specified, and make a second invocation |
453 | # of make so .config is not included in this case either (for *config). | |
454 | ||
10b63956 | 455 | version_h := include/generated/uapi/linux/version.h |
d183e6f5 | 456 | |
3eb3c740 | 457 | no-dot-config-targets := clean mrproper distclean \ |
f4ed1009 | 458 | cscope gtags TAGS tags help %docs check% coccicheck \ |
d183e6f5 | 459 | $(version_h) headers_% archheaders archscripts \ |
4aed2fd8 | 460 | kernelversion %src-pkg |
1da177e4 LT |
461 | |
462 | config-targets := 0 | |
463 | mixed-targets := 0 | |
464 | dot-config := 1 | |
465 | ||
466 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
467 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
468 | dot-config := 0 | |
469 | endif | |
470 | endif | |
471 | ||
472 | ifeq ($(KBUILD_EXTMOD),) | |
473 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) | |
474 | config-targets := 1 | |
475 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) | |
476 | mixed-targets := 1 | |
477 | endif | |
478 | endif | |
479 | endif | |
480 | ||
481 | ifeq ($(mixed-targets),1) | |
482 | # =========================================================================== | |
483 | # We're called with mixed targets (*config and build targets). | |
484 | # Handle them one by one. | |
485 | ||
486 | %:: FORCE | |
487 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ | |
488 | ||
489 | else | |
490 | ifeq ($(config-targets),1) | |
491 | # =========================================================================== | |
492 | # *config targets only - make sure prerequisites are updated, and descend | |
493 | # in scripts/kconfig to make the *config target | |
494 | ||
495 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. | |
496 | # KBUILD_DEFCONFIG may point out an alternative default configuration | |
497 | # used for 'make defconfig' | |
74b469f2 | 498 | include $(srctree)/arch/$(SRCARCH)/Makefile |
61bee204 | 499 | export KBUILD_DEFCONFIG KBUILD_KCONFIG |
1da177e4 | 500 | |
31110ebb SR |
501 | config: scripts_basic outputmakefile FORCE |
502 | $(Q)mkdir -p include/linux include/config | |
503 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ | |
504 | ||
505 | %config: scripts_basic outputmakefile FORCE | |
c955ccaf | 506 | $(Q)mkdir -p include/linux include/config |
1da177e4 LT |
507 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
508 | ||
509 | else | |
510 | # =========================================================================== | |
511 | # Build targets only - this includes vmlinux, arch specific targets, clean | |
512 | # targets and others. In general all targets except *config targets. | |
513 | ||
514 | ifeq ($(KBUILD_EXTMOD),) | |
515 | # Additional helpers built in scripts/ | |
516 | # Carefully list dependencies so we do not try to build scripts twice | |
070b98bf | 517 | # in parallel |
4f193362 | 518 | PHONY += scripts |
a54292f5 AS |
519 | scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ |
520 | asm-generic | |
1da177e4 LT |
521 | $(Q)$(MAKE) $(build)=$(@) |
522 | ||
1da177e4 LT |
523 | # Objects we will link into vmlinux / subdirs we need to visit |
524 | init-y := init/ | |
4d2acfbf | 525 | drivers-y := drivers/ sound/ firmware/ |
1da177e4 LT |
526 | net-y := net/ |
527 | libs-y := lib/ | |
528 | core-y := usr/ | |
529 | endif # KBUILD_EXTMOD | |
530 | ||
531 | ifeq ($(dot-config),1) | |
9ee4e336 SR |
532 | # Read in config |
533 | -include include/config/auto.conf | |
1da177e4 | 534 | |
9ee4e336 | 535 | ifeq ($(KBUILD_EXTMOD),) |
1da177e4 LT |
536 | # Read in dependencies to all Kconfig* files, make sure to run |
537 | # oldconfig if changes are detected. | |
c955ccaf | 538 | -include include/config/auto.conf.cmd |
1da177e4 | 539 | |
1da177e4 | 540 | # To avoid any implicit rule to kick in, define an empty command |
14cdd3c4 | 541 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
1da177e4 | 542 | |
c955ccaf | 543 | # If .config is newer than include/config/auto.conf, someone tinkered |
752625cf | 544 | # with it and forgot to run make oldconfig. |
070b98bf | 545 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
752625cf | 546 | # we execute the config step to be sure to catch updated Kconfig files |
bc081dd6 | 547 | include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
1da177e4 | 548 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
3041e47e | 549 | else |
264a2683 | 550 | # external modules needs include/generated/autoconf.h and include/config/auto.conf |
9ee4e336 SR |
551 | # but do not care if they are up-to-date. Use auto.conf to trigger the test |
552 | PHONY += include/config/auto.conf | |
553 | ||
554 | include/config/auto.conf: | |
264a2683 | 555 | $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
5369f550 MM |
556 | echo >&2; \ |
557 | echo >&2 " ERROR: Kernel configuration is invalid."; \ | |
558 | echo >&2 " include/generated/autoconf.h or $@ are missing.";\ | |
559 | echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ | |
560 | echo >&2 ; \ | |
9ee4e336 SR |
561 | /bin/false) |
562 | ||
563 | endif # KBUILD_EXTMOD | |
c955ccaf | 564 | |
1da177e4 LT |
565 | else |
566 | # Dummy target needed, because used as prerequisite | |
c955ccaf | 567 | include/config/auto.conf: ; |
9ee4e336 | 568 | endif # $(dot-config) |
1da177e4 LT |
569 | |
570 | # The all: target is the default when no target is given on the | |
571 | # command line. | |
572 | # This allow a user to issue only 'make' to build a kernel including modules | |
c8447161 | 573 | # Defaults to vmlinux, but the arch makefile usually adds further targets |
1da177e4 LT |
574 | all: vmlinux |
575 | ||
576 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE | |
e74fc973 | 577 | KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) |
1da177e4 | 578 | else |
a0f97e06 | 579 | KBUILD_CFLAGS += -O2 |
1da177e4 LT |
580 | endif |
581 | ||
a1f42beb PM |
582 | include $(srctree)/arch/$(SRCARCH)/Makefile |
583 | ||
1873e870 AK |
584 | ifdef CONFIG_READABLE_ASM |
585 | # Disable optimizations that make assembler listings hard to read. | |
586 | # reorder blocks reorders the control in the function | |
587 | # ipa clone creates specialized cloned functions | |
588 | # partial inlining inlines only parts of functions | |
589 | KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ | |
590 | $(call cc-option,-fno-ipa-cp-clone,) \ | |
591 | $(call cc-option,-fno-partial-inlining) | |
592 | endif | |
593 | ||
08f67461 | 594 | ifneq ($(CONFIG_FRAME_WARN),0) |
35bb5b1e AK |
595 | KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
596 | endif | |
597 | ||
e06b8b98 | 598 | # Force gcc to behave correct even for buggy distributions |
5d707e9c | 599 | ifndef CONFIG_CC_STACKPROTECTOR |
e06b8b98 | 600 | KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
5d707e9c | 601 | endif |
e06b8b98 | 602 | |
af0e5d56 DJ |
603 | # This warning generated too much noise in a regular build. |
604 | # Use make W=1 to enable this warning (see scripts/Makefile.build) | |
8417da6f | 605 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) |
af0e5d56 | 606 | |
1da177e4 | 607 | ifdef CONFIG_FRAME_POINTER |
a0f97e06 | 608 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
1da177e4 | 609 | else |
7e9501fd RV |
610 | # Some targets (ARM with Thumb2, for example), can't be built with frame |
611 | # pointers. For those, we don't have FUNCTION_TRACER automatically | |
612 | # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is | |
613 | # incompatible with -fomit-frame-pointer with current GCC, so we don't use | |
614 | # -fomit-frame-pointer with FUNCTION_TRACER. | |
615 | ifndef CONFIG_FUNCTION_TRACER | |
a0f97e06 | 616 | KBUILD_CFLAGS += -fomit-frame-pointer |
1da177e4 | 617 | endif |
7e9501fd | 618 | endif |
1da177e4 LT |
619 | |
620 | ifdef CONFIG_DEBUG_INFO | |
a0f97e06 | 621 | KBUILD_CFLAGS += -g |
222d394d | 622 | KBUILD_AFLAGS += -gdwarf-2 |
1da177e4 LT |
623 | endif |
624 | ||
d6f4ceb7 | 625 | ifdef CONFIG_DEBUG_INFO_REDUCED |
e82c4bb8 AK |
626 | KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ |
627 | $(call cc-option,-fno-var-tracking) | |
d6f4ceb7 AK |
628 | endif |
629 | ||
606576ce | 630 | ifdef CONFIG_FUNCTION_TRACER |
a2546fae SR |
631 | ifdef CONFIG_HAVE_FENTRY |
632 | CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) | |
633 | endif | |
634 | KBUILD_CFLAGS += -pg $(CC_USING_FENTRY) | |
635 | KBUILD_AFLAGS += $(CC_USING_FENTRY) | |
72441cb1 | 636 | ifdef CONFIG_DYNAMIC_FTRACE |
cf4db259 | 637 | ifdef CONFIG_HAVE_C_RECORDMCOUNT |
72441cb1 SR |
638 | BUILD_C_RECORDMCOUNT := y |
639 | export BUILD_C_RECORDMCOUNT | |
640 | endif | |
641 | endif | |
16444a8a ACM |
642 | endif |
643 | ||
91341d4b SR |
644 | # We trigger additional mismatches with less inlining |
645 | ifdef CONFIG_DEBUG_SECTION_MISMATCH | |
646 | KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) | |
647 | endif | |
648 | ||
e8e69931 | 649 | # arch Makefile may override CC so keep this after arch Makefile is included |
e8f5bdb0 | 650 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
e8e69931 SR |
651 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
652 | ||
1da177e4 | 653 | # warn about C99 declaration after statement |
a0f97e06 | 654 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
1da177e4 | 655 | |
070b98bf | 656 | # disable pointer signed / unsigned warnings in gcc 4.0 |
8417da6f | 657 | KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
1da177e4 | 658 | |
fe8d0a41 | 659 | # disable invalid "can't wrap" optimizations for signed / pointers |
a137802e | 660 | KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
d0115552 | 661 | |
8f7f5c9f AK |
662 | # conserve stack if available |
663 | KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) | |
664 | ||
80970472 ST |
665 | # disallow errors like 'EXPORT_GPL(foo);' with missing header |
666 | KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) | |
667 | ||
668 | # require functions to have arguments in prototypes, not empty 'int foo()' | |
669 | KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) | |
670 | ||
40df759e MM |
671 | # use the deterministic mode of AR if available |
672 | KBUILD_ARFLAGS := $(call ar-option,D) | |
673 | ||
bf5438fc JB |
674 | # check for 'asm goto' |
675 | ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) | |
676 | KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO | |
677 | endif | |
678 | ||
06c5040c | 679 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
70cfe026 OÇ |
680 | KBUILD_CPPFLAGS += $(KCPPFLAGS) |
681 | KBUILD_AFLAGS += $(KAFLAGS) | |
682 | KBUILD_CFLAGS += $(KCFLAGS) | |
52bcc330 | 683 | |
18991197 RM |
684 | # Use --build-id when available. |
685 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ | |
f86fd306 | 686 | $(call cc-ldoption, -Wl$(comma)--build-id,)) |
6588169d | 687 | KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
18991197 RM |
688 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
689 | ||
5d7d18f5 | 690 | ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
d79a2719 | 691 | LDFLAGS_vmlinux += $(call ld-option, -X,) |
5d7d18f5 DH |
692 | endif |
693 | ||
1da177e4 | 694 | # Default kernel image to build when no specific target is given. |
070b98bf | 695 | # KBUILD_IMAGE may be overruled on the command line or |
1da177e4 LT |
696 | # set in the environment |
697 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over | |
698 | # this default value | |
699 | export KBUILD_IMAGE ?= vmlinux | |
700 | ||
701 | # | |
702 | # INSTALL_PATH specifies where to place the updated kernel and system map | |
703 | # images. Default is /boot, but you can set it to other values | |
704 | export INSTALL_PATH ?= /boot | |
705 | ||
706 | # | |
707 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory | |
708 | # relocations required by build roots. This is not defined in the | |
070b98bf | 709 | # makefile but the argument can be passed to make if needed. |
1da177e4 LT |
710 | # |
711 | ||
df9df036 | 712 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4 LT |
713 | export MODLIB |
714 | ||
ac031f26 | 715 | # |
2ea03891 SR |
716 | # INSTALL_MOD_STRIP, if defined, will cause modules to be |
717 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then | |
718 | # the default option --strip-debug will be used. Otherwise, | |
177b241d | 719 | # INSTALL_MOD_STRIP value will be used as the options to the strip command. |
2ea03891 | 720 | |
ac031f26 TT |
721 | ifdef INSTALL_MOD_STRIP |
722 | ifeq ($(INSTALL_MOD_STRIP),1) | |
2ea03891 | 723 | mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26 | 724 | else |
2ea03891 | 725 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
ac031f26 TT |
726 | endif # INSTALL_MOD_STRIP=1 |
727 | else | |
2ea03891 | 728 | mod_strip_cmd = true |
ac031f26 TT |
729 | endif # INSTALL_MOD_STRIP |
730 | export mod_strip_cmd | |
731 | ||
1bf49dd4 | 732 | # Select initial ramdisk compression format, default is gzip(1). |
733 | # This shall be used by the dracut(8) tool while creating an initramfs image. | |
734 | # | |
735 | INITRD_COMPRESS=gzip | |
736 | ifeq ($(CONFIG_RD_BZIP2), y) | |
737 | INITRD_COMPRESS=bzip2 | |
738 | else ifeq ($(CONFIG_RD_LZMA), y) | |
739 | INITRD_COMPRESS=lzma | |
740 | else ifeq ($(CONFIG_RD_XZ), y) | |
741 | INITRD_COMPRESS=xz | |
742 | else ifeq ($(CONFIG_RD_LZO), y) | |
743 | INITRD_COMPRESS=lzo | |
744 | else ifeq ($(CONFIG_RD_LZ4), y) | |
745 | INITRD_COMPRESS=lz4 | |
746 | endif | |
747 | export INITRD_COMPRESS | |
1da177e4 | 748 | |
d9d8d7ed | 749 | ifdef CONFIG_MODULE_SIG_ALL |
e2a666d5 RR |
750 | MODSECKEY = ./signing_key.priv |
751 | MODPUBKEY = ./signing_key.x509 | |
752 | export MODPUBKEY | |
4bc9410c | 753 | mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY) |
e2a666d5 RR |
754 | else |
755 | mod_sign_cmd = true | |
756 | endif | |
757 | export mod_sign_cmd | |
758 | ||
759 | ||
1da177e4 | 760 | ifeq ($(KBUILD_EXTMOD),) |
3a65dfe8 | 761 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4 LT |
762 | |
763 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ | |
764 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ | |
765 | $(net-y) $(net-m) $(libs-y) $(libs-m))) | |
766 | ||
767 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ | |
768 | $(init-n) $(init-) \ | |
769 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ | |
770 | $(net-n) $(net-) $(libs-n) $(libs-)))) | |
771 | ||
772 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) | |
773 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) | |
774 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) | |
775 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) | |
776 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) | |
777 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) | |
778 | libs-y := $(libs-y1) $(libs-y2) | |
779 | ||
1f2bfbd0 | 780 | # Externally visible symbols (used by link-vmlinux.sh) |
95698570 SR |
781 | export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) |
782 | export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) | |
783 | export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds | |
1f2bfbd0 | 784 | export LDFLAGS_vmlinux |
6615d6c3 MM |
785 | # used by scripts/pacmage/Makefile |
786 | export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) | |
9bb48247 | 787 | |
1f2bfbd0 | 788 | vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) |
1da177e4 | 789 | |
1f2bfbd0 SR |
790 | # Final link of vmlinux |
791 | cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) | |
792 | quiet_cmd_link-vmlinux = LINK $@ | |
1da177e4 | 793 | |
1f2bfbd0 SR |
794 | # Include targets which we want to |
795 | # execute if the rest of the kernel build went well. | |
796 | vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE | |
0f836e5f | 797 | ifdef CONFIG_HEADERS_CHECK |
0e7af8d0 | 798 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
267c4025 MD |
799 | endif |
800 | ifdef CONFIG_SAMPLES | |
801 | $(Q)$(MAKE) $(build)=samples | |
3794f3e8 RD |
802 | endif |
803 | ifdef CONFIG_BUILD_DOCSRC | |
804 | $(Q)$(MAKE) $(build)=Documentation | |
0f836e5f | 805 | endif |
1f2bfbd0 | 806 | +$(call if_changed,link-vmlinux) |
741f98fe | 807 | |
1da177e4 LT |
808 | # The actual objects are generated when descending, |
809 | # make sure no implicit rule kicks in | |
1f2bfbd0 | 810 | $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
1da177e4 LT |
811 | |
812 | # Handle descending into subdirectories listed in $(vmlinux-dirs) | |
813 | # Preset locale variables to speed up the build process. Limit locale | |
814 | # tweaks to this spot to avoid wrong language settings when running | |
815 | # make menuconfig etc. | |
816 | # Error messages still appears in the original language | |
817 | ||
4f193362 | 818 | PHONY += $(vmlinux-dirs) |
5bb78269 | 819 | $(vmlinux-dirs): prepare scripts |
1da177e4 LT |
820 | $(Q)$(MAKE) $(build)=$@ |
821 | ||
0d0e7718 MM |
822 | define filechk_kernel.release |
823 | echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" | |
824 | endef | |
825 | ||
83a35e36 | 826 | # Store (new) KERNELRELEASE string in include/config/kernel.release |
f1d28fb0 | 827 | include/config/kernel.release: include/config/auto.conf FORCE |
0d0e7718 | 828 | $(call filechk,kernel.release) |
cb58455c SR |
829 | |
830 | ||
1da177e4 | 831 | # Things we need to do before we recursively start building the kernel |
5bb78269 SR |
832 | # or the modules are listed in "prepare". |
833 | # A multi level approach is used. prepareN is processed before prepareN-1. | |
834 | # archprepare is used in arch Makefiles and when processed asm symlink, | |
835 | # version.h and scripts_basic is processed / created. | |
1da177e4 | 836 | |
5bb78269 | 837 | # Listed in dependency order |
4f193362 | 838 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb78269 | 839 | |
86feeaa8 | 840 | # prepare3 is used to check if we are building in a separate output directory, |
1da177e4 LT |
841 | # and if so do: |
842 | # 1) Check that make has not been executed in the kernel src $(srctree) | |
f1d28fb0 | 843 | prepare3: include/config/kernel.release |
1da177e4 | 844 | ifneq ($(KBUILD_SRC),) |
fd54f502 | 845 | @$(kecho) ' Using $(srctree) as source for kernel' |
c955ccaf | 846 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
5369f550 MM |
847 | echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ |
848 | echo >&2 " in the '$(srctree)' directory.";\ | |
1da177e4 LT |
849 | /bin/false; \ |
850 | fi; | |
1da177e4 LT |
851 | endif |
852 | ||
86feeaa8 | 853 | # prepare2 creates a makefile if using a separate output directory |
d8ecc5cd | 854 | prepare2: prepare3 outputmakefile asm-generic |
1da177e4 | 855 | |
d183e6f5 | 856 | prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ |
f7f16b77 | 857 | include/config/auto.conf |
7bb9d092 | 858 | $(cmd_crmodverdir) |
1da177e4 | 859 | |
6520fe55 | 860 | archprepare: archheaders archscripts prepare1 scripts_basic |
5bb78269 SR |
861 | |
862 | prepare0: archprepare FORCE | |
8d36a623 | 863 | $(Q)$(MAKE) $(build)=. |
86feeaa8 | 864 | |
1da177e4 | 865 | # All the preparing.. |
d395efb5 | 866 | prepare: prepare0 |
1da177e4 | 867 | |
1da177e4 LT |
868 | # Generate some files |
869 | # --------------------------------------------------------------------------- | |
870 | ||
871 | # KERNELRELEASE can change from a few different places, meaning version.h | |
872 | # needs to be updated, so this check is forced on all builds | |
873 | ||
874 | uts_len := 64 | |
63104eec SR |
875 | define filechk_utsrelease.h |
876 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ | |
877 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ | |
878 | exit 1; \ | |
879 | fi; \ | |
880 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) | |
881 | endef | |
1da177e4 LT |
882 | |
883 | define filechk_version.h | |
450c6076 JJ |
884 | (echo \#define LINUX_VERSION_CODE $(shell \ |
885 | expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ | |
63104eec | 886 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
1da177e4 LT |
887 | endef |
888 | ||
d183e6f5 | 889 | $(version_h): $(srctree)/Makefile FORCE |
1da177e4 LT |
890 | $(call filechk,version.h) |
891 | ||
273b281f | 892 | include/generated/utsrelease.h: include/config/kernel.release FORCE |
63104eec SR |
893 | $(call filechk,utsrelease.h) |
894 | ||
179efcb4 VN |
895 | PHONY += headerdep |
896 | headerdep: | |
9663d989 PF |
897 | $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ |
898 | $(srctree)/scripts/headerdep.pl -I$(srctree)/include | |
179efcb4 | 899 | |
1da177e4 LT |
900 | # --------------------------------------------------------------------------- |
901 | ||
4f193362 | 902 | PHONY += depend dep |
1da177e4 LT |
903 | depend dep: |
904 | @echo '*** Warning: make $@ is unnecessary now.' | |
905 | ||
88ecf814 DW |
906 | # --------------------------------------------------------------------------- |
907 | # Firmware install | |
908 | INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware | |
909 | export INSTALL_FW_PATH | |
910 | ||
911 | PHONY += firmware_install | |
912 | firmware_install: FORCE | |
913 | @mkdir -p $(objtree)/firmware | |
914 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install | |
915 | ||
8d730cfb DW |
916 | # --------------------------------------------------------------------------- |
917 | # Kernel headers | |
8d730cfb | 918 | |
e6883b18 SR |
919 | #Default location for installed headers |
920 | export INSTALL_HDR_PATH = $(objtree)/usr | |
6d716275 | 921 | |
e6883b18 | 922 | hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
2fb9b1bd SR |
923 | |
924 | # If we do an all arch process set dst to asm-$(hdr-arch) | |
925 | hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) | |
e6883b18 | 926 | |
052ad274 PA |
927 | PHONY += archheaders |
928 | archheaders: | |
929 | ||
6520fe55 PA |
930 | PHONY += archscripts |
931 | archscripts: | |
932 | ||
e6883b18 | 933 | PHONY += __headers |
d183e6f5 | 934 | __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE |
e1b702cf | 935 | $(Q)$(MAKE) $(build)=scripts build_unifdef |
e6883b18 SR |
936 | |
937 | PHONY += headers_install_all | |
2fb9b1bd SR |
938 | headers_install_all: |
939 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install | |
6d716275 | 940 | |
8d730cfb | 941 | PHONY += headers_install |
e6883b18 | 942 | headers_install: __headers |
10b63956 DH |
943 | $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ |
944 | $(error Headers not exportable for the $(SRCARCH) architecture)) | |
945 | $(Q)$(MAKE) $(hdr-inst)=include/uapi | |
946 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) | |
8d730cfb | 947 | |
1f85712e MF |
948 | PHONY += headers_check_all |
949 | headers_check_all: headers_install_all | |
2fb9b1bd | 950 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
1f85712e | 951 | |
68475359 DW |
952 | PHONY += headers_check |
953 | headers_check: headers_install | |
10b63956 DH |
954 | $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 |
955 | $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 | |
68475359 | 956 | |
1da177e4 LT |
957 | # --------------------------------------------------------------------------- |
958 | # Modules | |
959 | ||
960 | ifdef CONFIG_MODULES | |
961 | ||
070b98bf | 962 | # By default, build modules as well |
1da177e4 | 963 | |
73d1393e | 964 | all: modules |
1da177e4 LT |
965 | |
966 | # Build modules | |
551559e1 TH |
967 | # |
968 | # A module can be listed more than once in obj-m resulting in | |
969 | # duplicate lines in modules.order files. Those are removed | |
970 | # using awk while concatenating to the final file. | |
1da177e4 | 971 | |
4f193362 | 972 | PHONY += modules |
2da30e70 | 973 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
551559e1 | 974 | $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
fd54f502 | 975 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 976 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
44463f7d | 977 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
1da177e4 | 978 | |
a6c36632 MM |
979 | modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
980 | $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin | |
981 | ||
73d1393e | 982 | %/modules.builtin: include/config/auto.conf |
a6c36632 MM |
983 | $(Q)$(MAKE) $(modbuiltin)=$* |
984 | ||
1da177e4 LT |
985 | |
986 | # Target to prepare building external modules | |
4f193362 | 987 | PHONY += modules_prepare |
5bb78269 | 988 | modules_prepare: prepare scripts |
1da177e4 LT |
989 | |
990 | # Target to install modules | |
4f193362 | 991 | PHONY += modules_install |
1da177e4 LT |
992 | modules_install: _modinst_ _modinst_post |
993 | ||
4f193362 | 994 | PHONY += _modinst_ |
2da30e70 | 995 | _modinst_: |
1da177e4 LT |
996 | @rm -rf $(MODLIB)/kernel |
997 | @rm -f $(MODLIB)/source | |
998 | @mkdir -p $(MODLIB)/kernel | |
999 | @ln -s $(srctree) $(MODLIB)/source | |
1000 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ | |
1001 | rm -f $(MODLIB)/build ; \ | |
1002 | ln -s $(objtree) $(MODLIB)/build ; \ | |
1003 | fi | |
551559e1 | 1004 | @cp -f $(objtree)/modules.order $(MODLIB)/ |
bc081dd6 | 1005 | @cp -f $(objtree)/modules.builtin $(MODLIB)/ |
b805aa0e | 1006 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1007 | |
50a8ec31 | 1008 | # This depmod is only for convenience to give the initial |
1da177e4 LT |
1009 | # boot a modules.dep even before / is mounted read-write. However the |
1010 | # boot script depmod is the master version. | |
4f193362 | 1011 | PHONY += _modinst_post |
6d128e1e | 1012 | _modinst_post: _modinst_ |
88ecf814 | 1013 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
50a8ec31 | 1014 | $(call cmd,depmod) |
1da177e4 | 1015 | |
d890f510 JB |
1016 | ifeq ($(CONFIG_MODULE_SIG), y) |
1017 | PHONY += modules_sign | |
1018 | modules_sign: | |
1019 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign | |
1020 | endif | |
1021 | ||
1da177e4 LT |
1022 | else # CONFIG_MODULES |
1023 | ||
1024 | # Modules not configured | |
1025 | # --------------------------------------------------------------------------- | |
1026 | ||
1027 | modules modules_install: FORCE | |
5369f550 MM |
1028 | @echo >&2 |
1029 | @echo >&2 "The present kernel configuration has modules disabled." | |
1030 | @echo >&2 "Type 'make config' and enable loadable module support." | |
1031 | @echo >&2 "Then build a kernel with module support enabled." | |
1032 | @echo >&2 | |
1da177e4 LT |
1033 | @exit 1 |
1034 | ||
1035 | endif # CONFIG_MODULES | |
1036 | ||
1da177e4 LT |
1037 | ### |
1038 | # Cleaning is done on three levels. | |
1039 | # make clean Delete most generated files | |
1040 | # Leave enough to build external modules | |
1041 | # make mrproper Delete the current configuration, and all generated files | |
1042 | # make distclean Remove editor backup files, patch leftover files and the like | |
1043 | ||
1044 | # Directories & files removed with 'make clean' | |
1045 | CLEAN_DIRS += $(MODVERDIR) | |
1da177e4 LT |
1046 | |
1047 | # Directories & files removed with 'make mrproper' | |
d8ecc5cd SR |
1048 | MRPROPER_DIRS += include/config usr/include include/generated \ |
1049 | arch/*/include/generated | |
d183e6f5 | 1050 | MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \ |
d5b71936 RR |
1051 | Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ |
1052 | signing_key.priv signing_key.x509 x509.genkey \ | |
1053 | extra_certificates signing_key.x509.keyid \ | |
1054 | signing_key.x509.signer | |
1da177e4 LT |
1055 | |
1056 | # clean - Delete most, but leave enough to build external modules | |
1057 | # | |
1058 | clean: rm-dirs := $(CLEAN_DIRS) | |
1059 | clean: rm-files := $(CLEAN_FILES) | |
fb68d4be | 1060 | clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) |
1da177e4 | 1061 | |
bd1ee804 | 1062 | PHONY += $(clean-dirs) clean archclean vmlinuxclean |
1da177e4 LT |
1063 | $(clean-dirs): |
1064 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1065 | ||
bd1ee804 PM |
1066 | vmlinuxclean: |
1067 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean | |
1068 | ||
1069 | clean: archclean vmlinuxclean | |
1da177e4 LT |
1070 | |
1071 | # mrproper - Delete all generated files, including .config | |
1072 | # | |
1073 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) | |
1074 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) | |
1075 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) | |
1076 | ||
4f193362 | 1077 | PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4 LT |
1078 | $(mrproper-dirs): |
1079 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) | |
1080 | ||
1081 | mrproper: clean archmrproper $(mrproper-dirs) | |
1082 | $(call cmd,rmdirs) | |
1083 | $(call cmd,rmfiles) | |
1084 | ||
1085 | # distclean | |
1086 | # | |
4f193362 | 1087 | PHONY += distclean |
1da177e4 LT |
1088 | |
1089 | distclean: mrproper | |
1090 | @find $(srctree) $(RCS_FIND_IGNORE) \ | |
070b98bf | 1091 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1da177e4 | 1092 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
f4b129f5 | 1093 | -o -name '.*.rej' \ |
1da177e4 LT |
1094 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
1095 | -type f -print | xargs rm -f | |
1096 | ||
1097 | ||
1098 | # Packaging of the kernel to various formats | |
1099 | # --------------------------------------------------------------------------- | |
1100 | # rpm target kept for backward compatibility | |
1101 | package-dir := $(srctree)/scripts/package | |
1102 | ||
bafb6747 ACM |
1103 | %src-pkg: FORCE |
1104 | $(Q)$(MAKE) $(build)=$(package-dir) $@ | |
031ecc6d | 1105 | %pkg: include/config/kernel.release FORCE |
6c2133e1 | 1106 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6d | 1107 | rpm: include/config/kernel.release FORCE |
6c2133e1 | 1108 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4 LT |
1109 | |
1110 | ||
1111 | # Brief documentation of the typical targets used | |
1112 | # --------------------------------------------------------------------------- | |
1113 | ||
5dffbe81 | 1114 | boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
1da177e4 | 1115 | boards := $(notdir $(boards)) |
5dffbe81 SB |
1116 | board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
1117 | board-dirs := $(sort $(notdir $(board-dirs:/=))) | |
1da177e4 LT |
1118 | |
1119 | help: | |
1120 | @echo 'Cleaning targets:' | |
5ea084ef | 1121 | @echo ' clean - Remove most generated files but keep the config and' |
5cc8d246 | 1122 | @echo ' enough build support to build external modules' |
5ea084ef | 1123 | @echo ' mrproper - Remove all generated files + config + various backup files' |
5cc8d246 | 1124 | @echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4 LT |
1125 | @echo '' |
1126 | @echo 'Configuration targets:' | |
1127 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help | |
1128 | @echo '' | |
1129 | @echo 'Other generic targets:' | |
1130 | @echo ' all - Build all targets marked with [*]' | |
1131 | @echo '* vmlinux - Build the bare kernel' | |
1132 | @echo '* modules - Build all modules' | |
9cc5d74c | 1133 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
88ecf814 DW |
1134 | @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
1135 | @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' | |
1da177e4 | 1136 | @echo ' dir/ - Build all files in dir and below' |
62718979 JP |
1137 | @echo ' dir/file.[oisS] - Build specified target only' |
1138 | @echo ' dir/file.lst - Build specified mixed source/assembly target only' | |
1139 | @echo ' (requires a recent binutils and recent build (System.map))' | |
155ad605 | 1140 | @echo ' dir/file.ko - Build module including final link' |
c4d5ee67 | 1141 | @echo ' modules_prepare - Set up for building external modules' |
1da177e4 LT |
1142 | @echo ' tags/TAGS - Generate tags file for editors' |
1143 | @echo ' cscope - Generate cscope index' | |
f4ed1009 | 1144 | @echo ' gtags - Generate GNU GLOBAL index' |
6d128842 | 1145 | @echo ' kernelrelease - Output the release version string' |
cb58455c | 1146 | @echo ' kernelversion - Output the version stored in Makefile' |
c398ff00 | 1147 | @echo ' image_name - Output the image name' |
2fb9b1bd | 1148 | @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
59df3230 | 1149 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
2fb9b1bd | 1150 | echo '' |
1da177e4 | 1151 | @echo 'Static analysers' |
1da177e4 LT |
1152 | @echo ' checkstack - Generate a list of stack hogs' |
1153 | @echo ' namespacecheck - Name space analysis on compiled kernel' | |
aa025e7d | 1154 | @echo ' versioncheck - Sanity check on version.h usage' |
ec2d987f | 1155 | @echo ' includecheck - Check for duplicate included header files' |
295ac051 | 1156 | @echo ' export_report - List the usages of all exported symbols' |
179efcb4 | 1157 | @echo ' headers_check - Sanity check on exported headers' |
74425eee NP |
1158 | @echo ' headerdep - Detect inclusion cycles in headers' |
1159 | @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help | |
1160 | @echo '' | |
1da177e4 | 1161 | @echo 'Kernel packaging:' |
6c2133e1 | 1162 | @$(MAKE) $(build)=$(package-dir) help |
1da177e4 LT |
1163 | @echo '' |
1164 | @echo 'Documentation targets:' | |
1165 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp | |
1166 | @echo '' | |
01dee188 | 1167 | @echo 'Architecture specific targets ($(SRCARCH)):' |
1da177e4 | 1168 | @$(if $(archhelp),$(archhelp),\ |
01dee188 | 1169 | echo ' No architecture specific help defined for $(SRCARCH)') |
1da177e4 LT |
1170 | @echo '' |
1171 | @$(if $(boards), \ | |
1172 | $(foreach b, $(boards), \ | |
1173 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ | |
1174 | echo '') | |
5dffbe81 SB |
1175 | @$(if $(board-dirs), \ |
1176 | $(foreach b, $(board-dirs), \ | |
1177 | printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ | |
1178 | printf " %-16s - Show all of the above\\n" help-boards; \ | |
1179 | echo '') | |
1da177e4 LT |
1180 | |
1181 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' | |
45d506bd | 1182 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4 | 1183 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
701842e3 DK |
1184 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
1185 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' | |
af07ce3e | 1186 | @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
28bc20dc SR |
1187 | @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' |
1188 | @echo ' 1: warnings which may be relevant and do not occur too often' | |
1189 | @echo ' 2: warnings which occur quite often but may still be relevant' | |
1190 | @echo ' 3: more obscure warnings, can most likely be ignored' | |
a6de553d | 1191 | @echo ' Multiple levels can be combined with W=12 or W=123' |
1da177e4 LT |
1192 | @echo '' |
1193 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' | |
1194 | @echo 'For further info see the ./README file' | |
1195 | ||
1196 | ||
5dffbe81 SB |
1197 | help-board-dirs := $(addprefix help-,$(board-dirs)) |
1198 | ||
1199 | help-boards: $(help-board-dirs) | |
1200 | ||
1201 | boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) | |
1202 | ||
1203 | $(help-board-dirs): help-%: | |
1204 | @echo 'Architecture specific targets ($(SRCARCH) $*):' | |
1205 | @$(if $(boards-per-dir), \ | |
1206 | $(foreach b, $(boards-per-dir), \ | |
1207 | printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ | |
1208 | echo '') | |
1209 | ||
1210 | ||
1da177e4 LT |
1211 | # Documentation targets |
1212 | # --------------------------------------------------------------------------- | |
1213 | %docs: scripts_basic FORCE | |
bffd2020 | 1214 | $(Q)$(MAKE) $(build)=scripts build_docproc |
1da177e4 LT |
1215 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
1216 | ||
1217 | else # KBUILD_EXTMOD | |
1218 | ||
1219 | ### | |
1220 | # External module support. | |
1221 | # When building external modules the kernel used as basis is considered | |
1222 | # read-only, and no consistency checks are made and the make | |
1223 | # system is not used on the basis kernel. If updates are required | |
1224 | # in the basis kernel ordinary make commands (without M=...) must | |
1225 | # be used. | |
1226 | # | |
1227 | # The following are the only valid targets when building external | |
1228 | # modules. | |
1229 | # make M=dir clean Delete all automatically generated files | |
1230 | # make M=dir modules Make all modules in specified dir | |
1231 | # make M=dir Same as 'make M=dir modules' | |
1232 | # make M=dir modules_install | |
070b98bf | 1233 | # Install the modules built in the module directory |
1da177e4 LT |
1234 | # Assumes install directory is already created |
1235 | ||
1236 | # We are always building modules | |
1237 | KBUILD_MODULES := 1 | |
4f193362 | 1238 | PHONY += crmodverdir |
1da177e4 | 1239 | crmodverdir: |
7bb9d092 | 1240 | $(cmd_crmodverdir) |
1da177e4 | 1241 | |
4f193362 | 1242 | PHONY += $(objtree)/Module.symvers |
1da177e4 LT |
1243 | $(objtree)/Module.symvers: |
1244 | @test -e $(objtree)/Module.symvers || ( \ | |
1245 | echo; \ | |
1246 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ | |
1247 | echo " is missing; modules will have no dependencies and modversions."; \ | |
1248 | echo ) | |
1249 | ||
1250 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) | |
4f193362 | 1251 | PHONY += $(module-dirs) modules |
1da177e4 LT |
1252 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
1253 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) | |
1254 | ||
1255 | modules: $(module-dirs) | |
fd54f502 | 1256 | @$(kecho) ' Building modules, stage 2.'; |
b805aa0e | 1257 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4 | 1258 | |
4f193362 | 1259 | PHONY += modules_install |
a67dc21a | 1260 | modules_install: _emodinst_ _emodinst_post |
e6304663 | 1261 | |
4f193362 PS |
1262 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
1263 | PHONY += _emodinst_ | |
a67dc21a | 1264 | _emodinst_: |
a67dc21a | 1265 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e | 1266 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4 | 1267 | |
4f193362 | 1268 | PHONY += _emodinst_post |
a67dc21a SR |
1269 | _emodinst_post: _emodinst_ |
1270 | $(call cmd,depmod) | |
1271 | ||
1da177e4 LT |
1272 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
1273 | ||
4f193362 | 1274 | PHONY += $(clean-dirs) clean |
1da177e4 LT |
1275 | $(clean-dirs): |
1276 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
1277 | ||
1278 | clean: rm-dirs := $(MODVERDIR) | |
88d7be03 | 1279 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
1da177e4 LT |
1280 | |
1281 | help: | |
1282 | @echo ' Building external modules.' | |
1283 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' | |
1284 | @echo '' | |
1285 | @echo ' modules - default target, build the module(s)' | |
1286 | @echo ' modules_install - install the module' | |
1287 | @echo ' clean - remove generated files in module directory only' | |
1288 | @echo '' | |
06300b21 SR |
1289 | |
1290 | # Dummies... | |
4f193362 | 1291 | PHONY += prepare scripts |
06300b21 SR |
1292 | prepare: ; |
1293 | scripts: ; | |
1da177e4 LT |
1294 | endif # KBUILD_EXTMOD |
1295 | ||
88d7be03 MM |
1296 | clean: $(clean-dirs) |
1297 | $(call cmd,rmdirs) | |
1298 | $(call cmd,rmfiles) | |
43f67c98 | 1299 | @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
88d7be03 | 1300 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
addbcdbb | 1301 | -o -name '*.ko.*' \ |
88d7be03 MM |
1302 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
1303 | -o -name '*.symtypes' -o -name 'modules.order' \ | |
1304 | -o -name modules.builtin -o -name '.tmp_*.o.*' \ | |
1305 | -o -name '*.gcno' \) -type f -print | xargs rm -f | |
1306 | ||
1da177e4 LT |
1307 | # Generate tags for editors |
1308 | # --------------------------------------------------------------------------- | |
a680eedc SR |
1309 | quiet_cmd_tags = GEN $@ |
1310 | cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ | |
1da177e4 | 1311 | |
f4ed1009 | 1312 | tags TAGS cscope gtags: FORCE |
1da177e4 LT |
1313 | $(call cmd,tags) |
1314 | ||
1da177e4 LT |
1315 | # Scripts to check various things for consistency |
1316 | # --------------------------------------------------------------------------- | |
1317 | ||
279f3dd3 PF |
1318 | PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
1319 | ||
1da177e4 | 1320 | includecheck: |
436f876c | 1321 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4 | 1322 | -name '*.[hcS]' -type f -print | sort \ |
80007434 | 1323 | | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1da177e4 LT |
1324 | |
1325 | versioncheck: | |
2ee2d292 | 1326 | find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4 | 1327 | -name '*.[hcS]' -type f -print | sort \ |
80007434 | 1328 | | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1da177e4 | 1329 | |
74425eee NP |
1330 | coccicheck: |
1331 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ | |
1332 | ||
1da177e4 LT |
1333 | namespacecheck: |
1334 | $(PERL) $(srctree)/scripts/namespace.pl | |
1335 | ||
295ac051 AB |
1336 | export_report: |
1337 | $(PERL) $(srctree)/scripts/export_report.pl | |
1338 | ||
1da177e4 LT |
1339 | endif #ifeq ($(config-targets),1) |
1340 | endif #ifeq ($(mixed-targets),1) | |
1341 | ||
c398ff00 | 1342 | PHONY += checkstack kernelrelease kernelversion image_name |
e3ccf6e3 | 1343 | |
011e3a9a JD |
1344 | # UML needs a little special treatment here. It wants to use the host |
1345 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone | |
1346 | # else wants $(ARCH), including people doing cross-builds, which means | |
1347 | # that $(SUBARCH) doesn't work here. | |
1348 | ifeq ($(ARCH), um) | |
1349 | CHECKSTACK_ARCH := $(SUBARCH) | |
1350 | else | |
1351 | CHECKSTACK_ARCH := $(ARCH) | |
1352 | endif | |
1da177e4 LT |
1353 | checkstack: |
1354 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ | |
011e3a9a | 1355 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1da177e4 | 1356 | |
7b8ea53d AW |
1357 | kernelrelease: |
1358 | @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" | |
01ab1788 | 1359 | |
cb58455c | 1360 | kernelversion: |
2244cbd8 | 1361 | @echo $(KERNELVERSION) |
1da177e4 | 1362 | |
c398ff00 MM |
1363 | image_name: |
1364 | @echo $(KBUILD_IMAGE) | |
1365 | ||
ea01fa9f BP |
1366 | # Clear a bunch of variables before executing the submake |
1367 | tools/: FORCE | |
bf35182f | 1368 | $(Q)mkdir -p $(objtree)/tools |
a50e4333 | 1369 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ |
ea01fa9f BP |
1370 | |
1371 | tools/%: FORCE | |
bf35182f | 1372 | $(Q)mkdir -p $(objtree)/tools |
a50e4333 | 1373 | $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $* |
ea01fa9f | 1374 | |
06300b21 SR |
1375 | # Single targets |
1376 | # --------------------------------------------------------------------------- | |
bc2546a6 | 1377 | # Single targets are compatible with: |
e1b8513d | 1378 | # - build with mixed source and output |
bc2546a6 SR |
1379 | # - build with separate output dir 'make O=...' |
1380 | # - external modules | |
1381 | # | |
1382 | # target-dir => where to store outputfile | |
1383 | # build-dir => directory in kernel source tree to use | |
1384 | ||
1385 | ifeq ($(KBUILD_EXTMOD),) | |
aa360879 | 1386 | build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a6 SR |
1387 | target-dir = $(dir $@) |
1388 | else | |
1389 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) | |
1390 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) | |
1391 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) | |
1392 | endif | |
1393 | ||
f6ecebd6 | 1394 | %.s: %.c prepare scripts FORCE |
bc2546a6 | 1395 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1396 | %.i: %.c prepare scripts FORCE |
bc2546a6 | 1397 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1398 | %.o: %.c prepare scripts FORCE |
bc2546a6 | 1399 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1400 | %.lst: %.c prepare scripts FORCE |
bc2546a6 | 1401 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1402 | %.s: %.S prepare scripts FORCE |
bc2546a6 | 1403 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd6 | 1404 | %.o: %.S prepare scripts FORCE |
bc2546a6 | 1405 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde675 AG |
1406 | %.symtypes: %.c prepare scripts FORCE |
1407 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | |
06300b21 | 1408 | |
bc2546a6 | 1409 | # Modules |
31110ebb SR |
1410 | /: prepare scripts FORCE |
1411 | $(cmd_crmodverdir) | |
1412 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ | |
1413 | $(build)=$(build-dir) | |
1414 | %/: prepare scripts FORCE | |
7bb9d092 | 1415 | $(cmd_crmodverdir) |
06300b21 | 1416 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 SR |
1417 | $(build)=$(build-dir) |
1418 | %.ko: prepare scripts FORCE | |
7bb9d092 | 1419 | $(cmd_crmodverdir) |
06300b21 | 1420 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a6 | 1421 | $(build)=$(build-dir) $(@:.ko=.o) |
b805aa0e | 1422 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21 | 1423 | |
1da177e4 LT |
1424 | # FIXME Should go into a make.lib or something |
1425 | # =========================================================================== | |
1426 | ||
1427 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) | |
1428 | cmd_rmdirs = rm -rf $(rm-dirs) | |
1429 | ||
1430 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) | |
1431 | cmd_rmfiles = rm -f $(rm-files) | |
1432 | ||
bc3c26fe | 1433 | # Run depmod only if we have System.map and depmod is executable |
50a8ec31 | 1434 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
569658dd | 1435 | cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
b92021b0 | 1436 | $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" |
50a8ec31 | 1437 | |
7bb9d092 | 1438 | # Create temporary dir for module support files |
ab19f879 SR |
1439 | # clean it up only when building all modules |
1440 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ | |
1441 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) | |
1da177e4 | 1442 | |
1da177e4 LT |
1443 | # read all saved command lines |
1444 | ||
1445 | targets := $(wildcard $(sort $(targets))) | |
1446 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | |
1447 | ||
1448 | ifneq ($(cmd_files),) | |
1449 | $(cmd_files): ; # Do not try to update included dependency files | |
1450 | include $(cmd_files) | |
1451 | endif | |
1452 | ||
1da177e4 LT |
1453 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
1454 | # Usage: | |
1455 | # $(Q)$(MAKE) $(clean)=dir | |
1456 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj | |
1457 | ||
1da177e4 LT |
1458 | endif # skip-makefile |
1459 | ||
4f193362 | 1460 | PHONY += FORCE |
1da177e4 | 1461 | FORCE: |
4f193362 | 1462 | |
4f193362 | 1463 | # Declare the contents of the .PHONY variable as phony. We keep that |
fe8d0a41 | 1464 | # information in a variable so we can use it in if_changed and friends. |
4f193362 | 1465 | .PHONY: $(PHONY) |