projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | VERSION = 2 |
| 2 | PATCHLEVEL = 6 | |
| c9927c2b | 3 | SUBLEVEL = 24 |
| 09b56adc | 4 | EXTRAVERSION = -rc4 |
| 81cfe79b | 5 | NAME = Arr Matey! A Hairy Bilge Rat! |
| 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 | |
| 15 | # (this increases performance and avoid hard-to-debug behavour); | |
| 16 | # o print "Entering directory ..."; | |
| 17 | MAKEFLAGS += -rR --no-print-directory | |
| 1da177e4 LT |
18 | |
| 19 | # We are using a recursive build, so we need to do a little thinking | |
| 20 | # to get the ordering right. | |
| 21 | # | |
| 22 | # Most importantly: sub-Makefiles should only ever modify files in | |
| 23 | # their own directory. If in some directory we have a dependency on | |
| 24 | # a file in another dir (which doesn't happen often, but it's often | |
| 25 | # unavoidable when linking the built-in.o targets which finally | |
| 26 | # turn into vmlinux), we will call a sub make in that other dir, and | |
| 27 | # after that we are sure that everything which is in that other dir | |
| 28 | # is now up to date. | |
| 29 | # | |
| 30 | # The only cases where we need to modify files which have global | |
| 31 | # effects are thus separated out and done before the recursive | |
| 32 | # descending is started. They are now explicitly listed as the | |
| 33 | # prepare rule. | |
| 34 | ||
| 35 | # To put more focus on warnings, be less verbose as default | |
| 36 | # Use 'make V=1' to see the full commands | |
| 37 | ||
| 38 | ifdef V | |
| 39 | ifeq ("$(origin V)", "command line") | |
| 40 | KBUILD_VERBOSE = $(V) | |
| 41 | endif | |
| 42 | endif | |
| 43 | ifndef KBUILD_VERBOSE | |
| 44 | KBUILD_VERBOSE = 0 | |
| 45 | endif | |
| 46 | ||
| 1c7bafe7 RD |
47 | # Call a source code checker (by default, "sparse") as part of the |
| 48 | # C compilation. | |
| 49 | # | |
| 50 | # Use 'make C=1' to enable checking of only re-compiled files. | |
| 51 | # Use 'make C=2' to enable checking of *all* source files, regardless | |
| 52 | # of whether they are re-compiled or not. | |
| 53 | # | |
| 54 | # See the file "Documentation/sparse.txt" for more details, including | |
| 55 | # where to get the "sparse" utility. | |
| 1da177e4 LT |
56 | |
| 57 | ifdef C | |
| 58 | ifeq ("$(origin C)", "command line") | |
| 59 | KBUILD_CHECKSRC = $(C) | |
| 60 | endif | |
| 61 | endif | |
| 62 | ifndef KBUILD_CHECKSRC | |
| 63 | KBUILD_CHECKSRC = 0 | |
| 64 | endif | |
| 65 | ||
| 66 | # Use make M=dir to specify directory of external module to build | |
| 67 | # Old syntax make ... SUBDIRS=$PWD is still supported | |
| 68 | # Setting the environment variable KBUILD_EXTMOD take precedence | |
| 69 | ifdef SUBDIRS | |
| 70 | KBUILD_EXTMOD ?= $(SUBDIRS) | |
| 71 | endif | |
| 72 | ifdef M | |
| 73 | ifeq ("$(origin M)", "command line") | |
| 74 | KBUILD_EXTMOD := $(M) | |
| 75 | endif | |
| 76 | endif | |
| 77 | ||
| 78 | ||
| 79 | # kbuild supports saving output files in a separate directory. | |
| 80 | # To locate output files in a separate directory two syntaxes are supported. | |
| 81 | # In both cases the working directory must be the root of the kernel src. | |
| 82 | # 1) O= | |
| 83 | # Use "make O=dir/to/store/output/files/" | |
| 070b98bf | 84 | # |
| 1da177e4 LT |
85 | # 2) Set KBUILD_OUTPUT |
| 86 | # Set the environment variable KBUILD_OUTPUT to point to the directory | |
| 87 | # where the output files shall be placed. | |
| 88 | # export KBUILD_OUTPUT=dir/to/store/output/files/ | |
| 89 | # make | |
| 90 | # | |
| 91 | # The O= assignment takes precedence over the KBUILD_OUTPUT environment | |
| 92 | # variable. | |
| 93 | ||
| 94 | ||
| 95 | # KBUILD_SRC is set on invocation of make in OBJ directory | |
| 96 | # KBUILD_SRC is not intended to be used by the regular user (for now) | |
| 97 | ifeq ($(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? | |
| 101 | ifdef O | |
| 102 | ifeq ("$(origin O)", "command line") | |
| 103 | KBUILD_OUTPUT := $(O) | |
| 104 | endif | |
| 105 | endif | |
| 106 | ||
| 107 | # That's our default target when none is given on the command line | |
| 4f193362 | 108 | PHONY := _all |
| 1da177e4 LT |
109 | _all: |
| 110 | ||
| 1cacc9ab SR |
111 | # Cancel implicit rules on top Makefile |
| 112 | $(CURDIR)/Makefile Makefile: ; | |
| 113 | ||
| 1da177e4 LT |
114 | ifneq ($(KBUILD_OUTPUT),) |
| 115 | # Invoke a second make in the output directory, passing relevant variables | |
| 116 | # check that the output directory actually exists | |
| 117 | saved-output := $(KBUILD_OUTPUT) | |
| 118 | KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) | |
| 119 | $(if $(KBUILD_OUTPUT),, \ | |
| 120 | $(error output directory "$(saved-output)" does not exist)) | |
| 4f1127e2 SR |
121 | # Check that OUTPUT directory is not the same as where we have kernel src |
| 122 | $(if $(filter-out $(KBUILD_OUTPUT),$(shell /bin/pwd)),, \ | |
| 123 | $(error Output directory (O=...) specifies kernel src dir)) | |
| 1da177e4 | 124 | |
| 0b35786d MM |
125 | PHONY += $(MAKECMDGOALS) sub-make |
| 126 | ||
| 1cacc9ab | 127 | $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
| 0b35786d MM |
128 | $(Q)@: |
| 129 | ||
| 130 | sub-make: FORCE | |
| 23a45e2c SR |
131 | $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
| 132 | KBUILD_SRC=$(CURDIR) \ | |
| 0b35786d MM |
133 | KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
| 134 | $(filter-out _all sub-make,$(MAKECMDGOALS)) | |
| 1da177e4 LT |
135 | |
| 136 | # Leave processing to above invocation of make | |
| 137 | skip-makefile := 1 | |
| 138 | endif # ifneq ($(KBUILD_OUTPUT),) | |
| 139 | endif # ifeq ($(KBUILD_SRC),) | |
| 140 | ||
| 141 | # We process the rest of the Makefile if this is the final invocation of make | |
| 142 | ifeq ($(skip-makefile),) | |
| 143 | ||
| 144 | # If building an external module we do not care about the all: rule | |
| 145 | # but instead _all depend on modules | |
| 4f193362 | 146 | PHONY += all |
| 1da177e4 LT |
147 | ifeq ($(KBUILD_EXTMOD),) |
| 148 | _all: all | |
| 149 | else | |
| 150 | _all: modules | |
| 151 | endif | |
| 152 | ||
| 153 | srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) | |
| 154 | TOPDIR := $(srctree) | |
| 155 | # FIXME - TOPDIR is obsolete, use srctree/objtree | |
| 156 | objtree := $(CURDIR) | |
| 157 | src := $(srctree) | |
| 158 | obj := $(objtree) | |
| 159 | ||
| 0f558c33 | 160 | VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
| 1da177e4 LT |
161 | |
| 162 | export srctree objtree VPATH TOPDIR | |
| 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 | ||
| 171 | SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ | |
| 172 | -e s/arm.*/arm/ -e s/sa110/arm/ \ | |
| 39990b5e | 173 | -e s/s390x/s390/ -e s/parisc64/parisc/ \ |
| 236b1957 PM |
174 | -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
| 175 | -e s/sh[234].*/sh/ ) | |
| 1da177e4 LT |
176 | |
| 177 | # Cross compiling and selecting different set of gcc/bin-utils | |
| 178 | # --------------------------------------------------------------------------- | |
| 179 | # | |
| 180 | # When performing cross compilation for other architectures ARCH shall be set | |
| 181 | # to the target architecture. (See arch/* for the possibilities). | |
| 182 | # ARCH can be set during invocation of make: | |
| 183 | # make ARCH=ia64 | |
| 184 | # Another way is to have ARCH set in the environment. | |
| 185 | # The default ARCH is the host where make is executed. | |
| 186 | ||
| 187 | # CROSS_COMPILE specify the prefix used for all executables used | |
| 188 | # during compilation. Only gcc and related bin-utils executables | |
| 189 | # are prefixed with $(CROSS_COMPILE). | |
| 190 | # CROSS_COMPILE can be set on the command line | |
| 191 | # make CROSS_COMPILE=ia64-linux- | |
| 192 | # Alternatively CROSS_COMPILE can be set in the environment. | |
| 193 | # Default value for CROSS_COMPILE is not to prefix executables | |
| 194 | # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile | |
| 195 | ||
| 196 | ARCH ?= $(SUBARCH) | |
| 197 | CROSS_COMPILE ?= | |
| 198 | ||
| 199 | # Architecture as present in compile.h | |
| 6752ed90 TG |
200 | UTS_MACHINE := $(ARCH) |
| 201 | SRCARCH := $(ARCH) | |
| 1da177e4 | 202 | |
| d746d647 SR |
203 | # Additional ARCH settings for x86 |
| 204 | ifeq ($(ARCH),i386) | |
| 205 | SRCARCH := x86 | |
| 206 | endif | |
| 207 | ifeq ($(ARCH),x86_64) | |
| 208 | SRCARCH := x86 | |
| 209 | endif | |
| 74b469f2 | 210 | |
| 14cdd3c4 RZ |
211 | KCONFIG_CONFIG ?= .config |
| 212 | ||
| 1da177e4 LT |
213 | # SHELL used by kbuild |
| 214 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
| 215 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
| 216 | else echo sh; fi ; fi) | |
| 217 | ||
| 070b98bf SR |
218 | HOSTCC = gcc |
| 219 | HOSTCXX = g++ | |
| 220 | HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer | |
| 221 | HOSTCXXFLAGS = -O2 | |
| 1da177e4 | 222 | |
| 070b98bf SR |
223 | # Decide whether to build built-in, modular, or both. |
| 224 | # Normally, just do built-in. | |
| 1da177e4 LT |
225 | |
| 226 | KBUILD_MODULES := | |
| 227 | KBUILD_BUILTIN := 1 | |
| 228 | ||
| 229 | # If we have only "make modules", don't compile built-in objects. | |
| 230 | # When we're building modules with modversions, we need to consider | |
| 231 | # the built-in objects during the descend as well, in order to | |
| 070b98bf | 232 | # make sure the checksums are up to date before we record them. |
| 1da177e4 LT |
233 | |
| 234 | ifeq ($(MAKECMDGOALS),modules) | |
| 235 | KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) | |
| 236 | endif | |
| 237 | ||
| 238 | # If we have "make <whatever> modules", compile modules | |
| 239 | # in addition to whatever we do anyway. | |
| 240 | # Just "make" or "make all" shall build modules as well | |
| 241 | ||
| 242 | ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) | |
| 243 | KBUILD_MODULES := 1 | |
| 244 | endif | |
| 245 | ||
| 246 | ifeq ($(MAKECMDGOALS),) | |
| 247 | KBUILD_MODULES := 1 | |
| 248 | endif | |
| 249 | ||
| e579d351 | 250 | export KBUILD_MODULES KBUILD_BUILTIN |
| 1da177e4 LT |
251 | export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
| 252 | ||
| 253 | # Beautify output | |
| 254 | # --------------------------------------------------------------------------- | |
| 255 | # | |
| 256 | # Normally, we echo the whole command before executing it. By making | |
| 257 | # that echo $($(quiet)$(cmd)), we now have the possibility to set | |
| 258 | # $(quiet) to choose other forms of output instead, e.g. | |
| 259 | # | |
| 260 | # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ | |
| 261 | # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< | |
| 262 | # | |
| 263 | # If $(quiet) is empty, the whole command will be printed. | |
| 264 | # If it is set to "quiet_", only the short version will be printed. | |
| 070b98bf | 265 | # If it is set to "silent_", nothing will be printed at all, since |
| 1da177e4 LT |
266 | # the variable $(silent_cmd_cc_o_c) doesn't exist. |
| 267 | # | |
| a58a414f | 268 | # A simple variant is to prefix commands with $(Q) - that's useful |
| 1da177e4 LT |
269 | # for commands that shall be hidden in non-verbose mode. |
| 270 | # | |
| 271 | # $(Q)ln $@ :< | |
| 272 | # | |
| 273 | # If KBUILD_VERBOSE equals 0 then the above command will be hidden. | |
| 274 | # If KBUILD_VERBOSE equals 1 then the above command is displayed. | |
| 275 | ||
| 276 | ifeq ($(KBUILD_VERBOSE),1) | |
| 277 | quiet = | |
| 278 | Q = | |
| 279 | else | |
| 280 | quiet=quiet_ | |
| 281 | Q = @ | |
| 282 | endif | |
| 283 | ||
| 284 | # If the user is running make -s (silent mode), suppress echoing of | |
| 285 | # commands | |
| 286 | ||
| 287 | ifneq ($(findstring s,$(MAKEFLAGS)),) | |
| 288 | quiet=silent_ | |
| 289 | endif | |
| 290 | ||
| 291 | export quiet Q KBUILD_VERBOSE | |
| 292 | ||
| 1da177e4 LT |
293 | |
| 294 | # Look for make include files relative to root of kernel src | |
| 295 | MAKEFLAGS += --include-dir=$(srctree) | |
| 296 | ||
| 1cacc9ab SR |
297 | # We need some generic definitions (do not try to remake the file). |
| 298 | $(srctree)/scripts/Kbuild.include: ; | |
| 15964864 | 299 | include $(srctree)/scripts/Kbuild.include |
| 1da177e4 LT |
300 | |
| 301 | # Make variables (CC, etc...) | |
| 302 | ||
| 303 | AS = $(CROSS_COMPILE)as | |
| 304 | LD = $(CROSS_COMPILE)ld | |
| 305 | CC = $(CROSS_COMPILE)gcc | |
| 306 | CPP = $(CC) -E | |
| 307 | AR = $(CROSS_COMPILE)ar | |
| 308 | NM = $(CROSS_COMPILE)nm | |
| 309 | STRIP = $(CROSS_COMPILE)strip | |
| 310 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
| 311 | OBJDUMP = $(CROSS_COMPILE)objdump | |
| 312 | AWK = awk | |
| 313 | GENKSYMS = scripts/genksyms/genksyms | |
| 314 | DEPMOD = /sbin/depmod | |
| 315 | KALLSYMS = scripts/kallsyms | |
| 316 | PERL = perl | |
| 317 | CHECK = sparse | |
| 318 | ||
| af4ca457 | 319 | CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF) |
| 1da177e4 LT |
320 | MODFLAGS = -DMODULE |
| 321 | CFLAGS_MODULE = $(MODFLAGS) | |
| 322 | AFLAGS_MODULE = $(MODFLAGS) | |
| 114f5157 | 323 | LDFLAGS_MODULE = |
| 1da177e4 LT |
324 | CFLAGS_KERNEL = |
| 325 | AFLAGS_KERNEL = | |
| 326 | ||
| 327 | ||
| 328 | # Use LINUXINCLUDE when you must reference the include/ directory. | |
| 329 | # Needed to be compatible with the O= option | |
| 330 | LINUXINCLUDE := -Iinclude \ | |
| 2dd34b48 | 331 | $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ |
| e623a3b8 | 332 | -include include/linux/autoconf.h |
| 1da177e4 | 333 | |
| 06c5040c | 334 | KBUILD_CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) |
| 1da177e4 | 335 | |
| a0f97e06 | 336 | KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
| 94bed2a9 DJ |
337 | -fno-strict-aliasing -fno-common \ |
| 338 | -Werror-implicit-function-declaration | |
| 222d394d | 339 | KBUILD_AFLAGS := -D__ASSEMBLY__ |
| 1da177e4 | 340 | |
| f1d28fb0 RZ |
341 | # Read KERNELRELEASE from include/config/kernel.release (if it exists) |
| 342 | KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) | |
| 2244cbd8 | 343 | KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) |
| cb58455c | 344 | |
| 070b98bf | 345 | export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
| 80ef88d6 | 346 | export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
| 070b98bf SR |
347 | export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE |
| 348 | export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS | |
| 1da177e4 | 349 | |
| 06c5040c | 350 | export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
| a0f97e06 | 351 | export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE |
| 222d394d | 352 | export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
| 1da177e4 LT |
353 | |
| 354 | # When compiling out-of-tree modules, put MODVERDIR in the module | |
| 355 | # tree rather than in the kernel tree. The kernel tree might | |
| 356 | # even be read-only. | |
| 357 | export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions | |
| 358 | ||
| 1da177e4 LT |
359 | # Files to ignore in find ... statements |
| 360 | ||
| 406119f4 TM |
361 | 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 |
| 362 | export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git | |
| 1da177e4 LT |
363 | |
| 364 | # =========================================================================== | |
| 365 | # Rules shared between *config targets and build targets | |
| 366 | ||
| 367 | # Basic helpers built in scripts/ | |
| 4f193362 | 368 | PHONY += scripts_basic |
| 1da177e4 LT |
369 | scripts_basic: |
| 370 | $(Q)$(MAKE) $(build)=scripts/basic | |
| 371 | ||
| cd05e6bd JB |
372 | # To avoid any implicit rule to kick in, define an empty command. |
| 373 | scripts/basic/%: scripts_basic ; | |
| 374 | ||
| 4f193362 | 375 | PHONY += outputmakefile |
| fd5f0cd6 JB |
376 | # outputmakefile generates a Makefile in the output directory, if using a |
| 377 | # separate output directory. This allows convenient use of make in the | |
| 378 | # output directory. | |
| 1da177e4 | 379 | outputmakefile: |
| fd5f0cd6 JB |
380 | ifneq ($(KBUILD_SRC),) |
| 381 | $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ | |
| 382 | $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) | |
| 383 | endif | |
| 1da177e4 LT |
384 | |
| 385 | # To make sure we do not include .config for any of the *config targets | |
| 386 | # catch them early, and hand them over to scripts/kconfig/Makefile | |
| 387 | # It is allowed to specify more targets when calling make, including | |
| 388 | # mixing *config targets and build targets. | |
| 070b98bf | 389 | # For example 'make oldconfig all'. |
| 1da177e4 LT |
390 | # Detect when mixed targets is specified, and make a second invocation |
| 391 | # of make so .config is not included in this case either (for *config). | |
| 392 | ||
| 3eb3c740 | 393 | no-dot-config-targets := clean mrproper distclean \ |
| c30a02e0 | 394 | cscope TAGS tags help %docs check% \ |
| 3eb3c740 RZ |
395 | include/linux/version.h headers_% \ |
| 396 | kernelrelease kernelversion | |
| 1da177e4 LT |
397 | |
| 398 | config-targets := 0 | |
| 399 | mixed-targets := 0 | |
| 400 | dot-config := 1 | |
| 401 | ||
| 402 | ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
| 403 | ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) | |
| 404 | dot-config := 0 | |
| 405 | endif | |
| 406 | endif | |
| 407 | ||
| 408 | ifeq ($(KBUILD_EXTMOD),) | |
| 409 | ifneq ($(filter config %config,$(MAKECMDGOALS)),) | |
| 410 | config-targets := 1 | |
| 411 | ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) | |
| 412 | mixed-targets := 1 | |
| 413 | endif | |
| 414 | endif | |
| 415 | endif | |
| 416 | ||
| 417 | ifeq ($(mixed-targets),1) | |
| 418 | # =========================================================================== | |
| 419 | # We're called with mixed targets (*config and build targets). | |
| 420 | # Handle them one by one. | |
| 421 | ||
| 422 | %:: FORCE | |
| 423 | $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ | |
| 424 | ||
| 425 | else | |
| 426 | ifeq ($(config-targets),1) | |
| 427 | # =========================================================================== | |
| 428 | # *config targets only - make sure prerequisites are updated, and descend | |
| 429 | # in scripts/kconfig to make the *config target | |
| 430 | ||
| 431 | # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. | |
| 432 | # KBUILD_DEFCONFIG may point out an alternative default configuration | |
| 433 | # used for 'make defconfig' | |
| 74b469f2 | 434 | include $(srctree)/arch/$(SRCARCH)/Makefile |
| 1da177e4 LT |
435 | export KBUILD_DEFCONFIG |
| 436 | ||
| cd05e6bd | 437 | config %config: scripts_basic outputmakefile FORCE |
| c955ccaf | 438 | $(Q)mkdir -p include/linux include/config |
| 1da177e4 LT |
439 | $(Q)$(MAKE) $(build)=scripts/kconfig $@ |
| 440 | ||
| 441 | else | |
| 442 | # =========================================================================== | |
| 443 | # Build targets only - this includes vmlinux, arch specific targets, clean | |
| 444 | # targets and others. In general all targets except *config targets. | |
| 445 | ||
| 446 | ifeq ($(KBUILD_EXTMOD),) | |
| 447 | # Additional helpers built in scripts/ | |
| 448 | # Carefully list dependencies so we do not try to build scripts twice | |
| 070b98bf | 449 | # in parallel |
| 4f193362 | 450 | PHONY += scripts |
| 2e3646e5 | 451 | scripts: scripts_basic include/config/auto.conf |
| 1da177e4 LT |
452 | $(Q)$(MAKE) $(build)=$(@) |
| 453 | ||
| 1da177e4 LT |
454 | # Objects we will link into vmlinux / subdirs we need to visit |
| 455 | init-y := init/ | |
| 456 | drivers-y := drivers/ sound/ | |
| 457 | net-y := net/ | |
| 458 | libs-y := lib/ | |
| 459 | core-y := usr/ | |
| 460 | endif # KBUILD_EXTMOD | |
| 461 | ||
| 462 | ifeq ($(dot-config),1) | |
| 9ee4e336 SR |
463 | # Read in config |
| 464 | -include include/config/auto.conf | |
| 1da177e4 | 465 | |
| 9ee4e336 | 466 | ifeq ($(KBUILD_EXTMOD),) |
| 1da177e4 LT |
467 | # Read in dependencies to all Kconfig* files, make sure to run |
| 468 | # oldconfig if changes are detected. | |
| c955ccaf | 469 | -include include/config/auto.conf.cmd |
| 1da177e4 | 470 | |
| 1da177e4 | 471 | # To avoid any implicit rule to kick in, define an empty command |
| 14cdd3c4 | 472 | $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
| 1da177e4 | 473 | |
| c955ccaf | 474 | # If .config is newer than include/config/auto.conf, someone tinkered |
| 752625cf | 475 | # with it and forgot to run make oldconfig. |
| 070b98bf | 476 | # if auto.conf.cmd is missing then we are probably in a cleaned tree so |
| 752625cf | 477 | # we execute the config step to be sure to catch updated Kconfig files |
| 14cdd3c4 | 478 | include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
| 1da177e4 | 479 | $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
| 3041e47e | 480 | else |
| 9ee4e336 SR |
481 | # external modules needs include/linux/autoconf.h and include/config/auto.conf |
| 482 | # but do not care if they are up-to-date. Use auto.conf to trigger the test | |
| 483 | PHONY += include/config/auto.conf | |
| 484 | ||
| 485 | include/config/auto.conf: | |
| 486 | $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \ | |
| 487 | echo; \ | |
| 488 | echo " ERROR: Kernel configuration is invalid."; \ | |
| 489 | echo " include/linux/autoconf.h or $@ are missing."; \ | |
| 490 | echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ | |
| 491 | echo; \ | |
| 492 | /bin/false) | |
| 493 | ||
| 494 | endif # KBUILD_EXTMOD | |
| c955ccaf | 495 | |
| 1da177e4 LT |
496 | else |
| 497 | # Dummy target needed, because used as prerequisite | |
| c955ccaf | 498 | include/config/auto.conf: ; |
| 9ee4e336 | 499 | endif # $(dot-config) |
| 1da177e4 LT |
500 | |
| 501 | # The all: target is the default when no target is given on the | |
| 502 | # command line. | |
| 503 | # This allow a user to issue only 'make' to build a kernel including modules | |
| 070b98bf | 504 | # Defaults vmlinux but it is usually overridden in the arch makefile |
| 1da177e4 LT |
505 | all: vmlinux |
| 506 | ||
| 507 | ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE | |
| a0f97e06 | 508 | KBUILD_CFLAGS += -Os |
| 1da177e4 | 509 | else |
| a0f97e06 | 510 | KBUILD_CFLAGS += -O2 |
| 1da177e4 LT |
511 | endif |
| 512 | ||
| 74b469f2 | 513 | include $(srctree)/arch/$(SRCARCH)/Makefile |
| c9eca0b9 | 514 | |
| 1da177e4 | 515 | ifdef CONFIG_FRAME_POINTER |
| a0f97e06 | 516 | KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
| 1da177e4 | 517 | else |
| a0f97e06 | 518 | KBUILD_CFLAGS += -fomit-frame-pointer |
| 1da177e4 LT |
519 | endif |
| 520 | ||
| 521 | ifdef CONFIG_DEBUG_INFO | |
| a0f97e06 | 522 | KBUILD_CFLAGS += -g |
| 222d394d | 523 | KBUILD_AFLAGS += -gdwarf-2 |
| 1da177e4 LT |
524 | endif |
| 525 | ||
| c9eca0b9 | 526 | # Force gcc to behave correct even for buggy distributions |
| a0f97e06 | 527 | KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
| 1da177e4 | 528 | |
| e8e69931 | 529 | # arch Makefile may override CC so keep this after arch Makefile is included |
| e8f5bdb0 | 530 | NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
| e8e69931 SR |
531 | CHECKFLAGS += $(NOSTDINC_FLAGS) |
| 532 | ||
| 1da177e4 | 533 | # warn about C99 declaration after statement |
| a0f97e06 | 534 | KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
| 1da177e4 | 535 | |
| 070b98bf | 536 | # disable pointer signed / unsigned warnings in gcc 4.0 |
| a0f97e06 | 537 | KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) |
| 1da177e4 | 538 | |
| 06c5040c | 539 | # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
| 69ee0b35 SR |
540 | # But warn user when we do so |
| 541 | warn-assign = \ | |
| 542 | $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") | |
| 543 | ||
| 544 | ifneq ($(KCPPFLAGS),) | |
| 545 | $(call warn-assign,CPPFLAGS) | |
| 546 | KBUILD_CPPFLAGS += $(KCPPFLAGS) | |
| 547 | endif | |
| 548 | ifneq ($(KAFLAGS),) | |
| 549 | $(call warn-assign,AFLAGS) | |
| 550 | KBUILD_AFLAGS += $(KAFLAGS) | |
| 551 | endif | |
| 552 | ifneq ($(KCFLAGS),) | |
| 553 | $(call warn-assign,CFLAGS) | |
| 554 | KBUILD_CFLAGS += $(KCFLAGS) | |
| 555 | endif | |
| 52bcc330 | 556 | |
| 18991197 RM |
557 | # Use --build-id when available. |
| 558 | LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ | |
| 559 | $(call ld-option, -Wl$(comma)--build-id,)) | |
| 560 | LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) | |
| 561 | LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) | |
| 562 | ||
| 1da177e4 | 563 | # Default kernel image to build when no specific target is given. |
| 070b98bf | 564 | # KBUILD_IMAGE may be overruled on the command line or |
| 1da177e4 LT |
565 | # set in the environment |
| 566 | # Also any assignments in arch/$(ARCH)/Makefile take precedence over | |
| 567 | # this default value | |
| 568 | export KBUILD_IMAGE ?= vmlinux | |
| 569 | ||
| 570 | # | |
| 571 | # INSTALL_PATH specifies where to place the updated kernel and system map | |
| 572 | # images. Default is /boot, but you can set it to other values | |
| 573 | export INSTALL_PATH ?= /boot | |
| 574 | ||
| 575 | # | |
| 576 | # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory | |
| 577 | # relocations required by build roots. This is not defined in the | |
| 070b98bf | 578 | # makefile but the argument can be passed to make if needed. |
| 1da177e4 LT |
579 | # |
| 580 | ||
| df9df036 | 581 | MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
| 1da177e4 LT |
582 | export MODLIB |
| 583 | ||
| ac031f26 TT |
584 | # |
| 585 | # INSTALL_MOD_STRIP, if defined, will cause modules to be | |
| 586 | # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then | |
| 587 | # the default option --strip-debug will be used. Otherwise, | |
| 588 | # INSTALL_MOD_STRIP will used as the options to the strip command. | |
| 589 | ||
| 590 | ifdef INSTALL_MOD_STRIP | |
| 591 | ifeq ($(INSTALL_MOD_STRIP),1) | |
| e340221a | 592 | mod_strip_cmd = $(STRIP) --strip-debug |
| ac031f26 TT |
593 | else |
| 594 | mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) | |
| 595 | endif # INSTALL_MOD_STRIP=1 | |
| 596 | else | |
| 597 | mod_strip_cmd = true | |
| 598 | endif # INSTALL_MOD_STRIP | |
| 599 | export mod_strip_cmd | |
| 600 | ||
| 1da177e4 LT |
601 | |
| 602 | ifeq ($(KBUILD_EXTMOD),) | |
| 3a65dfe8 | 603 | core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
| 1da177e4 LT |
604 | |
| 605 | vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ | |
| 606 | $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ | |
| 607 | $(net-y) $(net-m) $(libs-y) $(libs-m))) | |
| 608 | ||
| 609 | vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ | |
| 610 | $(init-n) $(init-) \ | |
| 611 | $(core-n) $(core-) $(drivers-n) $(drivers-) \ | |
| 612 | $(net-n) $(net-) $(libs-n) $(libs-)))) | |
| 613 | ||
| 614 | init-y := $(patsubst %/, %/built-in.o, $(init-y)) | |
| 615 | core-y := $(patsubst %/, %/built-in.o, $(core-y)) | |
| 616 | drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) | |
| 617 | net-y := $(patsubst %/, %/built-in.o, $(net-y)) | |
| 618 | libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) | |
| 619 | libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) | |
| 620 | libs-y := $(libs-y1) $(libs-y2) | |
| 621 | ||
| 622 | # Build vmlinux | |
| 623 | # --------------------------------------------------------------------------- | |
| 070b98bf | 624 | # vmlinux is built from the objects selected by $(vmlinux-init) and |
| 1da177e4 | 625 | # $(vmlinux-main). Most are built-in.o files from top-level directories |
| 2462566f | 626 | # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. |
| 1da177e4 LT |
627 | # Ordering when linking is important, and $(vmlinux-init) must be first. |
| 628 | # | |
| 629 | # vmlinux | |
| 630 | # ^ | |
| 631 | # | | |
| 632 | # +-< $(vmlinux-init) | |
| 633 | # | +--< init/version.o + more | |
| 634 | # | | |
| 635 | # +--< $(vmlinux-main) | |
| 636 | # | +--< driver/built-in.o mm/built-in.o + more | |
| 637 | # | | |
| 638 | # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) | |
| 639 | # | |
| 640 | # vmlinux version (uname -v) cannot be updated during normal | |
| 641 | # descending-into-subdirs phase since we do not yet know if we need to | |
| 642 | # update vmlinux. | |
| 643 | # Therefore this step is delayed until just before final link of vmlinux - | |
| 644 | # except in the kallsyms case where it is done just before adding the | |
| 645 | # symbols to the kernel. | |
| 646 | # | |
| 647 | # System.map is generated to document addresses of all kernel symbols | |
| 648 | ||
| 649 | vmlinux-init := $(head-y) $(init-y) | |
| 650 | vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) | |
| 651 | vmlinux-all := $(vmlinux-init) $(vmlinux-main) | |
| 6752ed90 | 652 | vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds |
| 85bd2fdd | 653 | export KBUILD_VMLINUX_OBJS := $(vmlinux-all) |
| 1da177e4 LT |
654 | |
| 655 | # Rule to link vmlinux - also used during CONFIG_KALLSYMS | |
| 656 | # May be overridden by arch/$(ARCH)/Makefile | |
| 657 | quiet_cmd_vmlinux__ ?= LD $@ | |
| 658 | cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ | |
| 659 | -T $(vmlinux-lds) $(vmlinux-init) \ | |
| 660 | --start-group $(vmlinux-main) --end-group \ | |
| 741f98fe | 661 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) |
| 1da177e4 LT |
662 | |
| 663 | # Generate new vmlinux version | |
| 664 | quiet_cmd_vmlinux_version = GEN .version | |
| 665 | cmd_vmlinux_version = set -e; \ | |
| 4e25d8bb JB |
666 | if [ ! -r .version ]; then \ |
| 667 | rm -f .version; \ | |
| 668 | echo 1 >.version; \ | |
| 669 | else \ | |
| 670 | mv .version .old_version; \ | |
| 671 | expr 0$$(cat .old_version) + 1 >.version; \ | |
| 672 | fi; \ | |
| 1da177e4 LT |
673 | $(MAKE) $(build)=init |
| 674 | ||
| 675 | # Generate System.map | |
| 070b98bf | 676 | quiet_cmd_sysmap = SYSMAP |
| 1da177e4 LT |
677 | cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap |
| 678 | ||
| 679 | # Link of vmlinux | |
| 680 | # If CONFIG_KALLSYMS is set .version is already updated | |
| 681 | # Generate System.map and verify that the content is consistent | |
| 39ca371c MR |
682 | # Use + in front of the vmlinux_version rule to silent warning with make -j2 |
| 683 | # First command is ':' to allow us to use + in front of the rule | |
| 1da177e4 | 684 | define rule_vmlinux__ |
| 39ca371c | 685 | : |
| 1da177e4 LT |
686 | $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) |
| 687 | ||
| 688 | $(call cmd,vmlinux__) | |
| 689 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
| 690 | ||
| 4635281c SR |
691 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
| 692 | echo ' $($(quiet)cmd_sysmap) System.map' &&) \ | |
| 693 | $(cmd_sysmap) $@ System.map; \ | |
| 694 | if [ $$? -ne 0 ]; then \ | |
| 695 | rm -f $@; \ | |
| 696 | /bin/false; \ | |
| 1da177e4 LT |
697 | fi; |
| 698 | $(verify_kallsyms) | |
| 699 | endef | |
| 700 | ||
| 701 | ||
| 702 | ifdef CONFIG_KALLSYMS | |
| 703 | # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) | |
| 704 | # It's a three stage process: | |
| 705 | # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is | |
| 706 | # empty | |
| 707 | # Running kallsyms on that gives us .tmp_kallsyms1.o with | |
| 708 | # the right size - vmlinux version (uname -v) is updated during this step | |
| 709 | # o .tmp_vmlinux2 now has a __kallsyms section of the right size, | |
| 710 | # but due to the added section, some addresses have shifted. | |
| 711 | # From here, we generate a correct .tmp_kallsyms2.o | |
| 712 | # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. | |
| 713 | # o Verify that the System.map from vmlinux matches the map from | |
| 714 | # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. | |
| 715 | # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using | |
| 716 | # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a | |
| 717 | # temporary bypass to allow the kernel to be built while the | |
| 718 | # maintainers work out what went wrong with kallsyms. | |
| 719 | ||
| 720 | ifdef CONFIG_KALLSYMS_EXTRA_PASS | |
| 721 | last_kallsyms := 3 | |
| 722 | else | |
| 723 | last_kallsyms := 2 | |
| 724 | endif | |
| 725 | ||
| 726 | kallsyms.o := .tmp_kallsyms$(last_kallsyms).o | |
| 727 | ||
| 728 | define verify_kallsyms | |
| 4635281c SR |
729 | $(Q)$(if $($(quiet)cmd_sysmap), \ |
| 730 | echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ | |
| 1da177e4 | 731 | $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map |
| 4635281c SR |
732 | $(Q)cmp -s System.map .tmp_System.map || \ |
| 733 | (echo Inconsistent kallsyms data; \ | |
| 734 | echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ | |
| 1da177e4 LT |
735 | rm .tmp_kallsyms* ; /bin/false ) |
| 736 | endef | |
| 737 | ||
| 738 | # Update vmlinux version before link | |
| 739 | # Use + in front of this rule to silent warning about make -j1 | |
| 72ba47c1 | 740 | # First command is ':' to allow us to use + in front of this rule |
| 1da177e4 LT |
741 | cmd_ksym_ld = $(cmd_vmlinux__) |
| 742 | define rule_ksym_ld | |
| 72ba47c1 | 743 | : |
| 1da177e4 LT |
744 | +$(call cmd,vmlinux_version) |
| 745 | $(call cmd,vmlinux__) | |
| 746 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd | |
| 747 | endef | |
| 748 | ||
| 749 | # Generate .S file with all kernel symbols | |
| 750 | quiet_cmd_kallsyms = KSYM $@ | |
| 751 | cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ | |
| 752 | $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ | |
| 753 | ||
| 754 | .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE | |
| 755 | $(call if_changed_dep,as_o_S) | |
| 756 | ||
| 757 | .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) | |
| 758 | $(call cmd,kallsyms) | |
| 759 | ||
| 760 | # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version | |
| 761 | .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE | |
| 762 | $(call if_changed_rule,ksym_ld) | |
| 763 | ||
| 764 | .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE | |
| 765 | $(call if_changed,vmlinux__) | |
| 766 | ||
| 767 | .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE | |
| 768 | $(call if_changed,vmlinux__) | |
| 769 | ||
| 770 | # Needs to visit scripts/ before $(KALLSYMS) can be used. | |
| 771 | $(KALLSYMS): scripts ; | |
| 772 | ||
| 33bc25ea SR |
773 | # Generate some data for debugging strange kallsyms problems |
| 774 | debug_kallsyms: .tmp_map$(last_kallsyms) | |
| 775 | ||
| 776 | .tmp_map%: .tmp_vmlinux% FORCE | |
| 777 | ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ | |
| 778 | ||
| 779 | .tmp_map3: .tmp_map2 | |
| 780 | ||
| 781 | .tmp_map2: .tmp_map1 | |
| 782 | ||
| 1da177e4 LT |
783 | endif # ifdef CONFIG_KALLSYMS |
| 784 | ||
| 741f98fe SR |
785 | # Do modpost on a prelinked vmlinux. The finally linked vmlinux has |
| 786 | # relevant sections renamed as per the linker script. | |
| 787 | quiet_cmd_vmlinux-modpost = LD $@ | |
| 788 | cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ | |
| 789 | $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ | |
| 790 | $(filter-out $(vmlinux-init) $(vmlinux-main) $(vmlinux-lds) FORCE ,$^) | |
| 791 | define rule_vmlinux-modpost | |
| 792 | : | |
| 793 | +$(call cmd,vmlinux-modpost) | |
| 794 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ | |
| 795 | $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd | |
| 796 | endef | |
| 797 | ||
| 1da177e4 | 798 | # vmlinux image - including updated kernel symbols |
| 741f98fe | 799 | vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) vmlinux.o FORCE |
| 0f836e5f | 800 | ifdef CONFIG_HEADERS_CHECK |
| 0e7af8d0 | 801 | $(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
| 267c4025 MD |
802 | endif |
| 803 | ifdef CONFIG_SAMPLES | |
| 804 | $(Q)$(MAKE) $(build)=samples | |
| 0f836e5f | 805 | endif |
| 741f98fe | 806 | $(call vmlinux-modpost) |
| 1da177e4 | 807 | $(call if_changed_rule,vmlinux__) |
| 4e25d8bb | 808 | $(Q)rm -f .old_version |
| 1da177e4 | 809 | |
| 741f98fe SR |
810 | vmlinux.o: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE |
| 811 | $(call if_changed_rule,vmlinux-modpost) | |
| 812 | ||
| 1da177e4 LT |
813 | # The actual objects are generated when descending, |
| 814 | # make sure no implicit rule kicks in | |
| 815 | $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; | |
| 816 | ||
| 817 | # Handle descending into subdirectories listed in $(vmlinux-dirs) | |
| 818 | # Preset locale variables to speed up the build process. Limit locale | |
| 819 | # tweaks to this spot to avoid wrong language settings when running | |
| 820 | # make menuconfig etc. | |
| 821 | # Error messages still appears in the original language | |
| 822 | ||
| 4f193362 | 823 | PHONY += $(vmlinux-dirs) |
| 5bb78269 | 824 | $(vmlinux-dirs): prepare scripts |
| 1da177e4 LT |
825 | $(Q)$(MAKE) $(build)=$@ |
| 826 | ||
| cb58455c | 827 | # Build the kernel release string |
| cb58455c | 828 | # |
| 1ef98856 RD |
829 | # The KERNELRELEASE value built here is stored in the file |
| 830 | # include/config/kernel.release, and is used when executing several | |
| 831 | # make targets, such as "make install" or "make modules_install." | |
| 832 | # | |
| 833 | # The eventual kernel release string consists of the following fields, | |
| 834 | # shown in a hierarchical format to show how smaller parts are concatenated | |
| 835 | # to form the larger and final value, with values coming from places like | |
| 836 | # the Makefile, kernel config options, make command line options and/or | |
| 837 | # SCM tag information. | |
| 838 | # | |
| 839 | # $(KERNELVERSION) | |
| 840 | # $(VERSION) eg, 2 | |
| 841 | # $(PATCHLEVEL) eg, 6 | |
| 842 | # $(SUBLEVEL) eg, 18 | |
| 843 | # $(EXTRAVERSION) eg, -rc6 | |
| 844 | # $(localver-full) | |
| 845 | # $(localver) | |
| 76c32956 | 846 | # localversion* (files without backups, containing '~') |
| 1ef98856 RD |
847 | # $(CONFIG_LOCALVERSION) (from kernel config setting) |
| 848 | # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set) | |
| 849 | # ./scripts/setlocalversion (SCM tag, if one exists) | |
| 850 | # $(LOCALVERSION) (from make command line if provided) | |
| 851 | # | |
| 852 | # Note how the final $(localver-auto) string is included *only* if the | |
| 853 | # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the | |
| 854 | # moment, only git is supported but other SCMs can edit the script | |
| 855 | # scripts/setlocalversion and add the appropriate checks as needed. | |
| cb58455c | 856 | |
| 76c32956 OV |
857 | pattern = ".*/localversion[^~]*" |
| 858 | string = $(shell cat /dev/null \ | |
| fd19e44f | 859 | `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`) |
| cb58455c | 860 | |
| 76c32956 OV |
861 | localver = $(subst $(space),, $(string) \ |
| 862 | $(patsubst "%",%,$(CONFIG_LOCALVERSION))) | |
| 070b98bf | 863 | |
| cb58455c SR |
864 | # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called |
| 865 | # and if the SCM is know a tag from the SCM is appended. | |
| 070b98bf | 866 | # The appended tag is determined by the SCM used. |
| cb58455c SR |
867 | # |
| 868 | # Currently, only git is supported. | |
| 869 | # Other SCMs can edit scripts/setlocalversion and add the appropriate | |
| 870 | # checks as needed. | |
| 871 | ifdef CONFIG_LOCALVERSION_AUTO | |
| 872 | _localver-auto = $(shell $(CONFIG_SHELL) \ | |
| 873 | $(srctree)/scripts/setlocalversion $(srctree)) | |
| 874 | localver-auto = $(LOCALVERSION)$(_localver-auto) | |
| 875 | endif | |
| 876 | ||
| 877 | localver-full = $(localver)$(localver-auto) | |
| 878 | ||
| f1d28fb0 | 879 | # Store (new) KERNELRELASE string in include/config/kernel.release |
| 2244cbd8 | 880 | kernelrelease = $(KERNELVERSION)$(localver-full) |
| f1d28fb0 | 881 | include/config/kernel.release: include/config/auto.conf FORCE |
| 2244cbd8 SR |
882 | $(Q)rm -f $@ |
| 883 | $(Q)echo $(kernelrelease) > $@ | |
| cb58455c SR |
884 | |
| 885 | ||
| 1da177e4 | 886 | # Things we need to do before we recursively start building the kernel |
| 5bb78269 SR |
887 | # or the modules are listed in "prepare". |
| 888 | # A multi level approach is used. prepareN is processed before prepareN-1. | |
| 889 | # archprepare is used in arch Makefiles and when processed asm symlink, | |
| 890 | # version.h and scripts_basic is processed / created. | |
| 1da177e4 | 891 | |
| 5bb78269 | 892 | # Listed in dependency order |
| 4f193362 | 893 | PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
| 5bb78269 | 894 | |
| 86feeaa8 | 895 | # prepare3 is used to check if we are building in a separate output directory, |
| 1da177e4 LT |
896 | # and if so do: |
| 897 | # 1) Check that make has not been executed in the kernel src $(srctree) | |
| 898 | # 2) Create the include2 directory, used for the second asm symlink | |
| f1d28fb0 | 899 | prepare3: include/config/kernel.release |
| 1da177e4 LT |
900 | ifneq ($(KBUILD_SRC),) |
| 901 | @echo ' Using $(srctree) as source for kernel' | |
| c955ccaf | 902 | $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
| 1da177e4 LT |
903 | echo " $(srctree) is not clean, please run 'make mrproper'";\ |
| 904 | echo " in the '$(srctree)' directory.";\ | |
| 905 | /bin/false; \ | |
| 906 | fi; | |
| 907 | $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; | |
| 96a388de | 908 | $(Q)ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm |
| 1da177e4 LT |
909 | endif |
| 910 | ||
| 86feeaa8 SR |
911 | # prepare2 creates a makefile if using a separate output directory |
| 912 | prepare2: prepare3 outputmakefile | |
| 1da177e4 | 913 | |
| 3eb3c740 RZ |
914 | prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \ |
| 915 | include/asm include/config/auto.conf | |
| 7bb9d092 | 916 | $(cmd_crmodverdir) |
| 1da177e4 | 917 | |
| 5bb78269 SR |
918 | archprepare: prepare1 scripts_basic |
| 919 | ||
| 920 | prepare0: archprepare FORCE | |
| 8d36a623 | 921 | $(Q)$(MAKE) $(build)=. |
| c53aeca0 | 922 | $(Q)$(MAKE) $(build)=. missing-syscalls |
| 86feeaa8 | 923 | |
| 1da177e4 | 924 | # All the preparing.. |
| d395efb5 | 925 | prepare: prepare0 |
| 1da177e4 | 926 | |
| 070b98bf SR |
927 | # Leave this as default for preprocessing vmlinux.lds.S, which is now |
| 928 | # done in arch/$(ARCH)/kernel/Makefile | |
| 1da177e4 LT |
929 | |
| 930 | export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) | |
| 931 | ||
| fc333b2d SR |
932 | # The asm symlink changes when $(ARCH) changes. |
| 933 | # Detect this and ask user to run make mrproper | |
| 934 | ||
| 935 | include/asm: FORCE | |
| 936 | $(Q)set -e; asmlink=`readlink include/asm | cut -d '-' -f 2`; \ | |
| 937 | if [ -L include/asm ]; then \ | |
| 938 | if [ "$$asmlink" != "$(SRCARCH)" ]; then \ | |
| 939 | echo "ERROR: the symlink $@ points to asm-$$asmlink but asm-$(SRCARCH) was expected"; \ | |
| 940 | echo " set ARCH or save .config and run 'make mrproper' to fix it"; \ | |
| 941 | exit 1; \ | |
| 942 | fi; \ | |
| 943 | else \ | |
| 944 | echo ' SYMLINK $@ -> include/asm-$(SRCARCH)'; \ | |
| 945 | if [ ! -d include ]; then \ | |
| 946 | mkdir -p include; \ | |
| 947 | fi; \ | |
| 948 | ln -fsn asm-$(SRCARCH) $@; \ | |
| 949 | fi | |
| 1da177e4 | 950 | |
| 1da177e4 LT |
951 | # Generate some files |
| 952 | # --------------------------------------------------------------------------- | |
| 953 | ||
| 954 | # KERNELRELEASE can change from a few different places, meaning version.h | |
| 955 | # needs to be updated, so this check is forced on all builds | |
| 956 | ||
| 957 | uts_len := 64 | |
| 63104eec SR |
958 | define filechk_utsrelease.h |
| 959 | if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ | |
| 960 | echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ | |
| 961 | exit 1; \ | |
| 962 | fi; \ | |
| 963 | (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) | |
| 964 | endef | |
| 1da177e4 LT |
965 | |
| 966 | define filechk_version.h | |
| 63104eec SR |
967 | (echo \#define LINUX_VERSION_CODE $(shell \ |
| 968 | expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ | |
| 969 | echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) | |
| 1da177e4 LT |
970 | endef |
| 971 | ||
| 63104eec | 972 | include/linux/version.h: $(srctree)/Makefile FORCE |
| 1da177e4 LT |
973 | $(call filechk,version.h) |
| 974 | ||
| 63104eec SR |
975 | include/linux/utsrelease.h: include/config/kernel.release FORCE |
| 976 | $(call filechk,utsrelease.h) | |
| 977 | ||
| 1da177e4 LT |
978 | # --------------------------------------------------------------------------- |
| 979 | ||
| 4f193362 | 980 | PHONY += depend dep |
| 1da177e4 LT |
981 | depend dep: |
| 982 | @echo '*** Warning: make $@ is unnecessary now.' | |
| 983 | ||
| 8d730cfb DW |
984 | # --------------------------------------------------------------------------- |
| 985 | # Kernel headers | |
| 1ab7a1f3 | 986 | INSTALL_HDR_PATH=$(objtree)/usr |
| 8d730cfb DW |
987 | export INSTALL_HDR_PATH |
| 988 | ||
| 96a388de TG |
989 | HDRFILTER=generic i386 x86_64 |
| 990 | HDRARCHES=$(filter-out $(HDRFILTER),$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild))) | |
| 6d716275 DW |
991 | |
| 992 | PHONY += headers_install_all | |
| 3eb3c740 | 993 | headers_install_all: include/linux/version.h scripts_basic FORCE |
| 398477d4 | 994 | $(Q)$(MAKE) $(build)=scripts scripts/unifdef |
| 6d716275 | 995 | $(Q)for arch in $(HDRARCHES); do \ |
| 398477d4 | 996 | $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch ;\ |
| 6d716275 DW |
997 | done |
| 998 | ||
| 8d730cfb | 999 | PHONY += headers_install |
| 3eb3c740 | 1000 | headers_install: include/linux/version.h scripts_basic FORCE |
| 96a388de TG |
1001 | @if [ ! -r $(srctree)/include/asm-$(SRCARCH)/Kbuild ]; then \ |
| 1002 | echo '*** Error: Headers not exportable for this architecture ($(SRCARCH))'; \ | |
| f17b7bad | 1003 | exit 1 ; fi |
| 07aea3a7 | 1004 | $(Q)$(MAKE) $(build)=scripts scripts/unifdef |
| 96a388de | 1005 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst ARCH=$(SRCARCH) obj=include |
| 8d730cfb | 1006 | |
| 1f85712e MF |
1007 | PHONY += headers_check_all |
| 1008 | headers_check_all: headers_install_all | |
| 1009 | $(Q)for arch in $(HDRARCHES); do \ | |
| 1010 | $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch HDRCHECK=1 ;\ | |
| 1011 | done | |
| 1012 | ||
| 68475359 DW |
1013 | PHONY += headers_check |
| 1014 | headers_check: headers_install | |
| 96a388de | 1015 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst ARCH=$(SRCARCH) obj=include HDRCHECK=1 |
| 68475359 | 1016 | |
| 1da177e4 LT |
1017 | # --------------------------------------------------------------------------- |
| 1018 | # Modules | |
| 1019 | ||
| 1020 | ifdef CONFIG_MODULES | |
| 1021 | ||
| 070b98bf | 1022 | # By default, build modules as well |
| 1da177e4 LT |
1023 | |
| 1024 | all: modules | |
| 1025 | ||
| 1026 | # Build modules | |
| 1027 | ||
| 4f193362 | 1028 | PHONY += modules |
| 1da177e4 LT |
1029 | modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) |
| 1030 | @echo ' Building modules, stage 2.'; | |
| b805aa0e | 1031 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
| 1da177e4 LT |
1032 | |
| 1033 | ||
| 1034 | # Target to prepare building external modules | |
| 4f193362 | 1035 | PHONY += modules_prepare |
| 5bb78269 | 1036 | modules_prepare: prepare scripts |
| 1da177e4 LT |
1037 | |
| 1038 | # Target to install modules | |
| 4f193362 | 1039 | PHONY += modules_install |
| 1da177e4 LT |
1040 | modules_install: _modinst_ _modinst_post |
| 1041 | ||
| 4f193362 | 1042 | PHONY += _modinst_ |
| 1da177e4 | 1043 | _modinst_: |
| ce454d4d | 1044 | @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ |
| 1da177e4 LT |
1045 | echo "Warning: you may need to install module-init-tools"; \ |
| 1046 | echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ | |
| 1047 | sleep 1; \ | |
| 1048 | fi | |
| 1049 | @rm -rf $(MODLIB)/kernel | |
| 1050 | @rm -f $(MODLIB)/source | |
| 1051 | @mkdir -p $(MODLIB)/kernel | |
| 1052 | @ln -s $(srctree) $(MODLIB)/source | |
| 1053 | @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ | |
| 1054 | rm -f $(MODLIB)/build ; \ | |
| 1055 | ln -s $(objtree) $(MODLIB)/build ; \ | |
| 1056 | fi | |
| b805aa0e | 1057 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
| 1da177e4 | 1058 | |
| 50a8ec31 | 1059 | # This depmod is only for convenience to give the initial |
| 1da177e4 LT |
1060 | # boot a modules.dep even before / is mounted read-write. However the |
| 1061 | # boot script depmod is the master version. | |
| 4f193362 | 1062 | PHONY += _modinst_post |
| 1da177e4 | 1063 | _modinst_post: _modinst_ |
| 50a8ec31 | 1064 | $(call cmd,depmod) |
| 1da177e4 LT |
1065 | |
| 1066 | else # CONFIG_MODULES | |
| 1067 | ||
| 1068 | # Modules not configured | |
| 1069 | # --------------------------------------------------------------------------- | |
| 1070 | ||
| 1071 | modules modules_install: FORCE | |
| 1072 | @echo | |
| 1073 | @echo "The present kernel configuration has modules disabled." | |
| 1074 | @echo "Type 'make config' and enable loadable module support." | |
| 1075 | @echo "Then build a kernel with module support enabled." | |
| 1076 | @echo | |
| 1077 | @exit 1 | |
| 1078 | ||
| 1079 | endif # CONFIG_MODULES | |
| 1080 | ||
| 1da177e4 LT |
1081 | ### |
| 1082 | # Cleaning is done on three levels. | |
| 1083 | # make clean Delete most generated files | |
| 1084 | # Leave enough to build external modules | |
| 1085 | # make mrproper Delete the current configuration, and all generated files | |
| 1086 | # make distclean Remove editor backup files, patch leftover files and the like | |
| 1087 | ||
| 1088 | # Directories & files removed with 'make clean' | |
| 1089 | CLEAN_DIRS += $(MODVERDIR) | |
| 1090 | CLEAN_FILES += vmlinux System.map \ | |
| 1091 | .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map | |
| 1092 | ||
| 1093 | # Directories & files removed with 'make mrproper' | |
| 1ab7a1f3 | 1094 | MRPROPER_DIRS += include/config include2 usr/include |
| 50aa88e2 | 1095 | MRPROPER_FILES += .config .config.old include/asm .version .old_version \ |
| 3eb3c740 RZ |
1096 | include/linux/autoconf.h include/linux/version.h \ |
| 1097 | include/linux/utsrelease.h \ | |
| f1d28fb0 | 1098 | Module.symvers tags TAGS cscope* |
| 1da177e4 LT |
1099 | |
| 1100 | # clean - Delete most, but leave enough to build external modules | |
| 1101 | # | |
| 1102 | clean: rm-dirs := $(CLEAN_DIRS) | |
| 1103 | clean: rm-files := $(CLEAN_FILES) | |
| 86feeaa8 | 1104 | clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs)) |
| 1da177e4 | 1105 | |
| 4f193362 | 1106 | PHONY += $(clean-dirs) clean archclean |
| 1da177e4 LT |
1107 | $(clean-dirs): |
| 1108 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
| 1109 | ||
| 1110 | clean: archclean $(clean-dirs) | |
| 1111 | $(call cmd,rmdirs) | |
| 1112 | $(call cmd,rmfiles) | |
| 1113 | @find . $(RCS_FIND_IGNORE) \ | |
| 070b98bf | 1114 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
| 15fde675 AG |
1115 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
| 1116 | -o -name '*.symtypes' \) \ | |
| 1da177e4 LT |
1117 | -type f -print | xargs rm -f |
| 1118 | ||
| 1119 | # mrproper - Delete all generated files, including .config | |
| 1120 | # | |
| 1121 | mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) | |
| 1122 | mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) | |
| 1123 | mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) | |
| 1124 | ||
| 4f193362 | 1125 | PHONY += $(mrproper-dirs) mrproper archmrproper |
| 1da177e4 LT |
1126 | $(mrproper-dirs): |
| 1127 | $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) | |
| 1128 | ||
| 1129 | mrproper: clean archmrproper $(mrproper-dirs) | |
| 1130 | $(call cmd,rmdirs) | |
| 1131 | $(call cmd,rmfiles) | |
| 1132 | ||
| 1133 | # distclean | |
| 1134 | # | |
| 4f193362 | 1135 | PHONY += distclean |
| 1da177e4 LT |
1136 | |
| 1137 | distclean: mrproper | |
| 1138 | @find $(srctree) $(RCS_FIND_IGNORE) \ | |
| 070b98bf | 1139 | \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
| 1da177e4 | 1140 | -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
| 070b98bf | 1141 | -o -name '.*.rej' -o -size 0 \ |
| 1da177e4 LT |
1142 | -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
| 1143 | -type f -print | xargs rm -f | |
| 1144 | ||
| 1145 | ||
| 1146 | # Packaging of the kernel to various formats | |
| 1147 | # --------------------------------------------------------------------------- | |
| 1148 | # rpm target kept for backward compatibility | |
| 1149 | package-dir := $(srctree)/scripts/package | |
| 1150 | ||
| 031ecc6d | 1151 | %pkg: include/config/kernel.release FORCE |
| 6c2133e1 | 1152 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
| 031ecc6d | 1153 | rpm: include/config/kernel.release FORCE |
| 6c2133e1 | 1154 | $(Q)$(MAKE) $(build)=$(package-dir) $@ |
| 1da177e4 LT |
1155 | |
| 1156 | ||
| 1157 | # Brief documentation of the typical targets used | |
| 1158 | # --------------------------------------------------------------------------- | |
| 1159 | ||
| 1160 | boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) | |
| 1161 | boards := $(notdir $(boards)) | |
| 1162 | ||
| 1163 | help: | |
| 1164 | @echo 'Cleaning targets:' | |
| 5ea084ef | 1165 | @echo ' clean - Remove most generated files but keep the config and' |
| 5cc8d246 | 1166 | @echo ' enough build support to build external modules' |
| 5ea084ef | 1167 | @echo ' mrproper - Remove all generated files + config + various backup files' |
| 5cc8d246 | 1168 | @echo ' distclean - mrproper + remove editor backup and patch files' |
| 1da177e4 LT |
1169 | @echo '' |
| 1170 | @echo 'Configuration targets:' | |
| 1171 | @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help | |
| 1172 | @echo '' | |
| 1173 | @echo 'Other generic targets:' | |
| 1174 | @echo ' all - Build all targets marked with [*]' | |
| 1175 | @echo '* vmlinux - Build the bare kernel' | |
| 1176 | @echo '* modules - Build all modules' | |
| 9cc5d74c | 1177 | @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
| 1da177e4 LT |
1178 | @echo ' dir/ - Build all files in dir and below' |
| 1179 | @echo ' dir/file.[ois] - Build specified target only' | |
| 155ad605 | 1180 | @echo ' dir/file.ko - Build module including final link' |
| 1da177e4 LT |
1181 | @echo ' rpm - Build a kernel as an RPM package' |
| 1182 | @echo ' tags/TAGS - Generate tags file for editors' | |
| 1183 | @echo ' cscope - Generate cscope index' | |
| 6d128842 | 1184 | @echo ' kernelrelease - Output the release version string' |
| cb58455c | 1185 | @echo ' kernelversion - Output the version stored in Makefile' |
| 91e034ef | 1186 | @if [ -r $(srctree)/include/asm-$(SRCARCH)/Kbuild ]; then \ |
| f17b7bad | 1187 | echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
| 59df3230 | 1188 | echo ' (default: $(INSTALL_HDR_PATH))'; \ |
| f17b7bad | 1189 | fi |
| 1da177e4 LT |
1190 | @echo '' |
| 1191 | @echo 'Static analysers' | |
| 1da177e4 LT |
1192 | @echo ' checkstack - Generate a list of stack hogs' |
| 1193 | @echo ' namespacecheck - Name space analysis on compiled kernel' | |
| 295ac051 | 1194 | @echo ' export_report - List the usages of all exported symbols' |
| 91e034ef | 1195 | @if [ -r $(srctree)/include/asm-$(SRCARCH)/Kbuild ]; then \ |
| f17b7bad DW |
1196 | echo ' headers_check - Sanity check on exported headers'; \ |
| 1197 | fi | |
| 1da177e4 LT |
1198 | @echo '' |
| 1199 | @echo 'Kernel packaging:' | |
| 6c2133e1 | 1200 | @$(MAKE) $(build)=$(package-dir) help |
| 1da177e4 LT |
1201 | @echo '' |
| 1202 | @echo 'Documentation targets:' | |
| 1203 | @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp | |
| 1204 | @echo '' | |
| 1205 | @echo 'Architecture specific targets ($(ARCH)):' | |
| 1206 | @$(if $(archhelp),$(archhelp),\ | |
| 1207 | echo ' No architecture specific help defined for $(ARCH)') | |
| 1208 | @echo '' | |
| 1209 | @$(if $(boards), \ | |
| 1210 | $(foreach b, $(boards), \ | |
| 1211 | printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ | |
| 1212 | echo '') | |
| 1213 | ||
| 1214 | @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' | |
| 45d506bd | 1215 | @echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
| 1da177e4 | 1216 | @echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
| 701842e3 DK |
1217 | @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
| 1218 | @echo ' make C=2 [targets] Force check of all c source with $$CHECK' | |
| 1da177e4 LT |
1219 | @echo '' |
| 1220 | @echo 'Execute "make" or "make all" to build all targets marked with [*] ' | |
| 1221 | @echo 'For further info see the ./README file' | |
| 1222 | ||
| 1223 | ||
| 1224 | # Documentation targets | |
| 1225 | # --------------------------------------------------------------------------- | |
| 1226 | %docs: scripts_basic FORCE | |
| 1227 | $(Q)$(MAKE) $(build)=Documentation/DocBook $@ | |
| 1228 | ||
| 1229 | else # KBUILD_EXTMOD | |
| 1230 | ||
| 1231 | ### | |
| 1232 | # External module support. | |
| 1233 | # When building external modules the kernel used as basis is considered | |
| 1234 | # read-only, and no consistency checks are made and the make | |
| 1235 | # system is not used on the basis kernel. If updates are required | |
| 1236 | # in the basis kernel ordinary make commands (without M=...) must | |
| 1237 | # be used. | |
| 1238 | # | |
| 1239 | # The following are the only valid targets when building external | |
| 1240 | # modules. | |
| 1241 | # make M=dir clean Delete all automatically generated files | |
| 1242 | # make M=dir modules Make all modules in specified dir | |
| 1243 | # make M=dir Same as 'make M=dir modules' | |
| 1244 | # make M=dir modules_install | |
| 070b98bf | 1245 | # Install the modules built in the module directory |
| 1da177e4 LT |
1246 | # Assumes install directory is already created |
| 1247 | ||
| 1248 | # We are always building modules | |
| 1249 | KBUILD_MODULES := 1 | |
| 4f193362 | 1250 | PHONY += crmodverdir |
| 1da177e4 | 1251 | crmodverdir: |
| 7bb9d092 | 1252 | $(cmd_crmodverdir) |
| 1da177e4 | 1253 | |
| 4f193362 | 1254 | PHONY += $(objtree)/Module.symvers |
| 1da177e4 LT |
1255 | $(objtree)/Module.symvers: |
| 1256 | @test -e $(objtree)/Module.symvers || ( \ | |
| 1257 | echo; \ | |
| 1258 | echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ | |
| 1259 | echo " is missing; modules will have no dependencies and modversions."; \ | |
| 1260 | echo ) | |
| 1261 | ||
| 1262 | module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) | |
| 4f193362 | 1263 | PHONY += $(module-dirs) modules |
| 1da177e4 LT |
1264 | $(module-dirs): crmodverdir $(objtree)/Module.symvers |
| 1265 | $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) | |
| 1266 | ||
| 1267 | modules: $(module-dirs) | |
| 1268 | @echo ' Building modules, stage 2.'; | |
| b805aa0e | 1269 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
| 1da177e4 | 1270 | |
| 4f193362 | 1271 | PHONY += modules_install |
| a67dc21a | 1272 | modules_install: _emodinst_ _emodinst_post |
| e6304663 | 1273 | |
| 4f193362 PS |
1274 | install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
| 1275 | PHONY += _emodinst_ | |
| a67dc21a | 1276 | _emodinst_: |
| a67dc21a | 1277 | $(Q)mkdir -p $(MODLIB)/$(install-dir) |
| b805aa0e | 1278 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
| 1da177e4 | 1279 | |
| 4f193362 | 1280 | PHONY += _emodinst_post |
| a67dc21a SR |
1281 | _emodinst_post: _emodinst_ |
| 1282 | $(call cmd,depmod) | |
| 1283 | ||
| 1da177e4 LT |
1284 | clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
| 1285 | ||
| 4f193362 | 1286 | PHONY += $(clean-dirs) clean |
| 1da177e4 LT |
1287 | $(clean-dirs): |
| 1288 | $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) | |
| 1289 | ||
| 1290 | clean: rm-dirs := $(MODVERDIR) | |
| c34114f4 | 1291 | clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
| 1da177e4 LT |
1292 | clean: $(clean-dirs) |
| 1293 | $(call cmd,rmdirs) | |
| c34114f4 | 1294 | $(call cmd,rmfiles) |
| 1da177e4 | 1295 | @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ |
| 070b98bf | 1296 | \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
| 1da177e4 LT |
1297 | -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ |
| 1298 | -type f -print | xargs rm -f | |
| 1299 | ||
| 1300 | help: | |
| 1301 | @echo ' Building external modules.' | |
| 1302 | @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' | |
| 1303 | @echo '' | |
| 1304 | @echo ' modules - default target, build the module(s)' | |
| 1305 | @echo ' modules_install - install the module' | |
| 1306 | @echo ' clean - remove generated files in module directory only' | |
| 1307 | @echo '' | |
| 06300b21 SR |
1308 | |
| 1309 | # Dummies... | |
| 4f193362 | 1310 | PHONY += prepare scripts |
| 06300b21 SR |
1311 | prepare: ; |
| 1312 | scripts: ; | |
| 1da177e4 LT |
1313 | endif # KBUILD_EXTMOD |
| 1314 | ||
| 1315 | # Generate tags for editors | |
| 1316 | # --------------------------------------------------------------------------- | |
| 1317 | ||
| 1318 | #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set | |
| 1319 | #(which is the most common case IMHO) to avoid unneeded clutter in the big tags file. | |
| 1320 | #Adding $(srctree) adds about 20M on i386 to the size of the output file! | |
| 1321 | ||
| f182ae62 | 1322 | ifeq ($(src),$(obj)) |
| 1da177e4 LT |
1323 | __srctree = |
| 1324 | else | |
| 1325 | __srctree = $(srctree)/ | |
| 1326 | endif | |
| 1327 | ||
| 2ab23c95 PBG |
1328 | ifeq ($(ALLSOURCE_ARCHS),) |
| 1329 | ifeq ($(ARCH),um) | |
| 1330 | ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH) | |
| 1331 | else | |
| 2eb4c950 | 1332 | ALLINCLUDE_ARCHS := $(SRCARCH) |
| 2ab23c95 PBG |
1333 | endif |
| 1334 | else | |
| 070b98bf | 1335 | #Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour. |
| 2ab23c95 PBG |
1336 | ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS) |
| 1337 | endif | |
| 1338 | ||
| d0974b11 | 1339 | ALLSOURCE_ARCHS := $(SRCARCH) |
| a0674e88 | 1340 | |
| e838db68 | 1341 | define find-sources |
| f8bea58b YL |
1342 | ( for arch in $(ALLSOURCE_ARCHS) ; do \ |
| 1343 | find $(__srctree)arch/$${arch} $(RCS_FIND_IGNORE) \ | |
| e838db68 | 1344 | -name $1 -print; \ |
| a0674e88 | 1345 | done ; \ |
| 1da177e4 | 1346 | find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \ |
| e838db68 | 1347 | -name $1 -print; \ |
| 1da177e4 LT |
1348 | find $(__srctree)include $(RCS_FIND_IGNORE) \ |
| 1349 | \( -name config -o -name 'asm-*' \) -prune \ | |
| e838db68 | 1350 | -o -name $1 -print; \ |
| f8bea58b YL |
1351 | for arch in $(ALLINCLUDE_ARCHS) ; do \ |
| 1352 | find $(__srctree)include/asm-$${arch} $(RCS_FIND_IGNORE) \ | |
| e838db68 | 1353 | -name $1 -print; \ |
| a0674e88 | 1354 | done ; \ |
| 1da177e4 | 1355 | find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ |
| dd7e54ad DM |
1356 | -name $1 -print; \ |
| 1357 | find $(__srctree) $(RCS_FIND_IGNORE) \ | |
| 37ab7a26 | 1358 | \( -name include -o -name arch -o -name '.tmp_*' \) -prune -o \ |
| dd7e54ad DM |
1359 | -name $1 -print; \ |
| 1360 | ) | |
| e838db68 MY |
1361 | endef |
| 1362 | ||
| 1363 | define all-sources | |
| 1364 | $(call find-sources,'*.[chS]') | |
| 1365 | endef | |
| 1366 | define all-kconfigs | |
| 1367 | $(call find-sources,'Kconfig*') | |
| 1368 | endef | |
| 1369 | define all-defconfigs | |
| 1370 | $(call find-sources,'defconfig') | |
| 1da177e4 LT |
1371 | endef |
| 1372 | ||
| da7c0408 AG |
1373 | define xtags |
| 1374 | if $1 --version 2>&1 | grep -iq exuberant; then \ | |
| 1375 | $(all-sources) | xargs $1 -a \ | |
| 1376 | -I __initdata,__exitdata,__acquires,__releases \ | |
| 1377 | -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ | |
| 91b943ee | 1378 | --extra=+f --c-kinds=+px \ |
| a412c172 | 1379 | --regex-asm='/^ENTRY\(([^)]*)\).*/\1/'; \ |
| da7c0408 AG |
1380 | $(all-kconfigs) | xargs $1 -a \ |
| 1381 | --langdef=kconfig \ | |
| 1382 | --language-force=kconfig \ | |
| 1383 | --regex-kconfig='/^[[:blank:]]*config[[:blank:]]+([[:alnum:]_]+)/\1/'; \ | |
| 18e39913 | 1384 | $(all-defconfigs) | xargs -r $1 -a \ |
| da7c0408 AG |
1385 | --langdef=dotconfig \ |
| 1386 | --language-force=dotconfig \ | |
| 1387 | --regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'; \ | |
| 1388 | elif $1 --version 2>&1 | grep -iq emacs; then \ | |
| 1389 | $(all-sources) | xargs $1 -a; \ | |
| 1390 | $(all-kconfigs) | xargs $1 -a \ | |
| 1391 | --regex='/^[ \t]*config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \ | |
| 18e39913 | 1392 | $(all-defconfigs) | xargs -r $1 -a \ |
| da7c0408 AG |
1393 | --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \ |
| 1394 | else \ | |
| 1395 | $(all-sources) | xargs $1 -a; \ | |
| 1396 | fi | |
| 1397 | endef | |
| 1398 | ||
| 1da177e4 | 1399 | quiet_cmd_cscope-file = FILELST cscope.files |
| acbef459 | 1400 | cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files |
| 1da177e4 LT |
1401 | |
| 1402 | quiet_cmd_cscope = MAKE cscope.out | |
| acbef459 | 1403 | cmd_cscope = cscope -b |
| 1da177e4 LT |
1404 | |
| 1405 | cscope: FORCE | |
| 1406 | $(call cmd,cscope-file) | |
| 1407 | $(call cmd,cscope) | |
| 1408 | ||
| 1409 | quiet_cmd_TAGS = MAKE $@ | |
| 66d609ec SR |
1410 | define cmd_TAGS |
| 1411 | rm -f $@; \ | |
| da7c0408 | 1412 | $(call xtags,etags) |
| 66d609ec SR |
1413 | endef |
| 1414 | ||
| 1415 | TAGS: FORCE | |
| 1416 | $(call cmd,TAGS) | |
| 1da177e4 | 1417 | |
| 1da177e4 LT |
1418 | quiet_cmd_tags = MAKE $@ |
| 1419 | define cmd_tags | |
| 1420 | rm -f $@; \ | |
| da7c0408 | 1421 | $(call xtags,ctags) |
| 1da177e4 LT |
1422 | endef |
| 1423 | ||
| 1da177e4 LT |
1424 | tags: FORCE |
| 1425 | $(call cmd,tags) | |
| 1426 | ||
| 1427 | ||
| 1428 | # Scripts to check various things for consistency | |
| 1429 | # --------------------------------------------------------------------------- | |
| 1430 | ||
| 1da177e4 LT |
1431 | includecheck: |
| 1432 | find * $(RCS_FIND_IGNORE) \ | |
| 1433 | -name '*.[hcS]' -type f -print | sort \ | |
| 1434 | | xargs $(PERL) -w scripts/checkincludes.pl | |
| 1435 | ||
| 1436 | versioncheck: | |
| 1437 | find * $(RCS_FIND_IGNORE) \ | |
| 1438 | -name '*.[hcS]' -type f -print | sort \ | |
| 1439 | | xargs $(PERL) -w scripts/checkversion.pl | |
| 1440 | ||
| 1da177e4 LT |
1441 | namespacecheck: |
| 1442 | $(PERL) $(srctree)/scripts/namespace.pl | |
| 1443 | ||
| 295ac051 AB |
1444 | export_report: |
| 1445 | $(PERL) $(srctree)/scripts/export_report.pl | |
| 1446 | ||
| 1da177e4 LT |
1447 | endif #ifeq ($(config-targets),1) |
| 1448 | endif #ifeq ($(mixed-targets),1) | |
| 1449 | ||
| c30a02e0 | 1450 | PHONY += checkstack kernelrelease kernelversion |
| e3ccf6e3 | 1451 | |
| 011e3a9a JD |
1452 | # UML needs a little special treatment here. It wants to use the host |
| 1453 | # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone | |
| 1454 | # else wants $(ARCH), including people doing cross-builds, which means | |
| 1455 | # that $(SUBARCH) doesn't work here. | |
| 1456 | ifeq ($(ARCH), um) | |
| 1457 | CHECKSTACK_ARCH := $(SUBARCH) | |
| 1458 | else | |
| 1459 | CHECKSTACK_ARCH := $(ARCH) | |
| 1460 | endif | |
| 1da177e4 LT |
1461 | checkstack: |
| 1462 | $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ | |
| 011e3a9a | 1463 | $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
| 1da177e4 LT |
1464 | |
| 1465 | kernelrelease: | |
| f1d28fb0 RZ |
1466 | $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ |
| 1467 | $(error kernelrelease not valid - run 'make prepare' to update it)) | |
| cb58455c | 1468 | kernelversion: |
| 2244cbd8 | 1469 | @echo $(KERNELVERSION) |
| 1da177e4 | 1470 | |
| 06300b21 SR |
1471 | # Single targets |
| 1472 | # --------------------------------------------------------------------------- | |
| bc2546a6 SR |
1473 | # Single targets are compatible with: |
| 1474 | # - build whith mixed source and output | |
| 1475 | # - build with separate output dir 'make O=...' | |
| 1476 | # - external modules | |
| 1477 | # | |
| 1478 | # target-dir => where to store outputfile | |
| 1479 | # build-dir => directory in kernel source tree to use | |
| 1480 | ||
| 1481 | ifeq ($(KBUILD_EXTMOD),) | |
| aa360879 | 1482 | build-dir = $(patsubst %/,%,$(dir $@)) |
| bc2546a6 SR |
1483 | target-dir = $(dir $@) |
| 1484 | else | |
| 1485 | zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) | |
| 1486 | build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) | |
| 1487 | target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) | |
| 1488 | endif | |
| 1489 | ||
| f6ecebd6 | 1490 | %.s: %.c prepare scripts FORCE |
| bc2546a6 | 1491 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| f6ecebd6 | 1492 | %.i: %.c prepare scripts FORCE |
| bc2546a6 | 1493 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| f6ecebd6 | 1494 | %.o: %.c prepare scripts FORCE |
| bc2546a6 | 1495 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| f6ecebd6 | 1496 | %.lst: %.c prepare scripts FORCE |
| bc2546a6 | 1497 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| f6ecebd6 | 1498 | %.s: %.S prepare scripts FORCE |
| bc2546a6 | 1499 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| f6ecebd6 | 1500 | %.o: %.S prepare scripts FORCE |
| bc2546a6 | 1501 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
| 15fde675 AG |
1502 | %.symtypes: %.c prepare scripts FORCE |
| 1503 | $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) | |
| 06300b21 | 1504 | |
| bc2546a6 SR |
1505 | # Modules |
| 1506 | / %/: prepare scripts FORCE | |
| 7bb9d092 | 1507 | $(cmd_crmodverdir) |
| 06300b21 | 1508 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
| bc2546a6 SR |
1509 | $(build)=$(build-dir) |
| 1510 | %.ko: prepare scripts FORCE | |
| 7bb9d092 | 1511 | $(cmd_crmodverdir) |
| 06300b21 | 1512 | $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
| bc2546a6 | 1513 | $(build)=$(build-dir) $(@:.ko=.o) |
| b805aa0e | 1514 | $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
| 06300b21 | 1515 | |
| 1da177e4 LT |
1516 | # FIXME Should go into a make.lib or something |
| 1517 | # =========================================================================== | |
| 1518 | ||
| 1519 | quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) | |
| 1520 | cmd_rmdirs = rm -rf $(rm-dirs) | |
| 1521 | ||
| 1522 | quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) | |
| 1523 | cmd_rmfiles = rm -f $(rm-files) | |
| 1524 | ||
| 50a8ec31 SR |
1525 | # Run depmod only is we have System.map and depmod is executable |
| 1526 | # and we build for the host arch | |
| 1527 | quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) | |
| 1528 | cmd_depmod = \ | |
| d8d2e78a | 1529 | if [ -r System.map -a -x $(DEPMOD) ]; then \ |
| 50a8ec31 SR |
1530 | $(DEPMOD) -ae -F System.map \ |
| 1531 | $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) -r) \ | |
| 1532 | $(KERNELRELEASE); \ | |
| 1533 | fi | |
| 1534 | ||
| 7bb9d092 | 1535 | # Create temporary dir for module support files |
| ab19f879 SR |
1536 | # clean it up only when building all modules |
| 1537 | cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ | |
| 1538 | $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) | |
| 1da177e4 | 1539 | |
| 222d394d | 1540 | a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ |
| 06c5040c | 1541 | $(NOSTDINC_FLAGS) $(KBUILD_CPPFLAGS) \ |
| 5e8d780d | 1542 | $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) |
| 1da177e4 LT |
1543 | |
| 1544 | quiet_cmd_as_o_S = AS $@ | |
| 1545 | cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< | |
| 1546 | ||
| 1547 | # read all saved command lines | |
| 1548 | ||
| 1549 | targets := $(wildcard $(sort $(targets))) | |
| 1550 | cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) | |
| 1551 | ||
| 1552 | ifneq ($(cmd_files),) | |
| 1553 | $(cmd_files): ; # Do not try to update included dependency files | |
| 1554 | include $(cmd_files) | |
| 1555 | endif | |
| 1556 | ||
| 1da177e4 LT |
1557 | # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
| 1558 | # Usage: | |
| 1559 | # $(Q)$(MAKE) $(clean)=dir | |
| 1560 | clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj | |
| 1561 | ||
| 1da177e4 LT |
1562 | endif # skip-makefile |
| 1563 | ||
| 4f193362 | 1564 | PHONY += FORCE |
| 1da177e4 | 1565 | FORCE: |
| 4f193362 | 1566 | |
| 4f193362 PS |
1567 | # Declare the contents of the .PHONY variable as phony. We keep that |
| 1568 | # information in a variable se we can use it in if_changed and friends. | |
| 1569 | .PHONY: $(PHONY) |