1 # SPDX-License-Identifier: GPL-2.0 !! 1 VERSION = 4 2 VERSION = 6 !! 2 PATCHLEVEL = 4 3 PATCHLEVEL = 12 !! 3 SUBLEVEL = 302 4 SUBLEVEL = 0 !! 4 EXTRAVERSION = 5 EXTRAVERSION = -rc7 !! 5 NAME = Blurry Fish Butt 6 NAME = Baby Opossum Posse << 7 6 8 # *DOCUMENTATION* 7 # *DOCUMENTATION* 9 # To see a list of typical targets execute "ma 8 # To see a list of typical targets execute "make help" 10 # More info can be located in ./README 9 # More info can be located in ./README 11 # Comments in this file are targeted only to t 10 # Comments in this file are targeted only to the developer, do not 12 # expect to learn how to build the kernel read 11 # expect to learn how to build the kernel reading this file. 13 12 14 ifeq ($(filter output-sync,$(.FEATURES)),) !! 13 # o Do not use make's built-in rules and variables 15 $(error GNU Make >= 4.0 is required. Your Make !! 14 # (this increases performance and avoids hard-to-debug behaviour); 16 endif !! 15 # o Look for make include files relative to root of kernel src >> 16 MAKEFLAGS += -rR --include-dir=$(CURDIR) 17 17 18 $(if $(filter __%, $(MAKECMDGOALS)), \ !! 18 # Avoid funny character set dependencies 19 $(error targets prefixed with '__' are !! 19 unexport LC_ALL >> 20 LC_COLLATE=C >> 21 LC_NUMERIC=C >> 22 export LC_COLLATE LC_NUMERIC 20 23 21 # That's our default target when none is given !! 24 # Avoid interference with shell env settings 22 PHONY := __all !! 25 unexport GREP_OPTIONS 23 __all: << 24 26 25 # We are using a recursive build, so we need t 27 # We are using a recursive build, so we need to do a little thinking 26 # to get the ordering right. 28 # to get the ordering right. 27 # 29 # 28 # Most importantly: sub-Makefiles should only 30 # Most importantly: sub-Makefiles should only ever modify files in 29 # their own directory. If in some directory we 31 # their own directory. If in some directory we have a dependency on 30 # a file in another dir (which doesn't happen 32 # a file in another dir (which doesn't happen often, but it's often 31 # unavoidable when linking the built-in.a targ !! 33 # unavoidable when linking the built-in.o targets which finally 32 # turn into vmlinux), we will call a sub make 34 # turn into vmlinux), we will call a sub make in that other dir, and 33 # after that we are sure that everything which 35 # after that we are sure that everything which is in that other dir 34 # is now up to date. 36 # is now up to date. 35 # 37 # 36 # The only cases where we need to modify files 38 # The only cases where we need to modify files which have global 37 # effects are thus separated out and done befo 39 # effects are thus separated out and done before the recursive 38 # descending is started. They are now explicit 40 # descending is started. They are now explicitly listed as the 39 # prepare rule. 41 # prepare rule. 40 42 41 this-makefile := $(lastword $(MAKEFILE_LIST)) << 42 abs_srctree := $(realpath $(dir $(this-makefil << 43 abs_objtree := $(CURDIR) << 44 << 45 ifneq ($(sub_make_done),1) << 46 << 47 # Do not use make's built-in rules and variabl << 48 # (this increases performance and avoids hard- << 49 MAKEFLAGS += -rR << 50 << 51 # Avoid funny character set dependencies << 52 unexport LC_ALL << 53 LC_COLLATE=C << 54 LC_NUMERIC=C << 55 export LC_COLLATE LC_NUMERIC << 56 << 57 # Avoid interference with shell env settings << 58 unexport GREP_OPTIONS << 59 << 60 # Beautify output 43 # Beautify output 61 # -------------------------------------------- 44 # --------------------------------------------------------------------------- 62 # 45 # 63 # Most of build commands in Kbuild start with !! 46 # Normally, we echo the whole command before executing it. By making 64 # "quiet_cmd_*". If defined, the short log is !! 47 # that echo $($(quiet)$(cmd)), we now have the possibility to set 65 # that command is printed by default. !! 48 # $(quiet) to choose other forms of output instead, e.g. 66 # !! 49 # 67 # e.g.) !! 50 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 68 # quiet_cmd_depmod = DEPMOD $(MODLIB) !! 51 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 69 # cmd_depmod = $(srctree)/scripts/dep !! 52 # >> 53 # If $(quiet) is empty, the whole command will be printed. >> 54 # If it is set to "quiet_", only the short version will be printed. >> 55 # If it is set to "silent_", nothing will be printed at all, since >> 56 # the variable $(silent_cmd_cc_o_c) doesn't exist. 70 # 57 # 71 # A simple variant is to prefix commands with 58 # A simple variant is to prefix commands with $(Q) - that's useful 72 # for commands that shall be hidden in non-ver 59 # for commands that shall be hidden in non-verbose mode. 73 # 60 # 74 # $(Q)$(MAKE) $(build)=scripts/basic !! 61 # $(Q)ln $@ :< 75 # 62 # 76 # If KBUILD_VERBOSE contains 1, the whole comm !! 63 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 77 # If KBUILD_VERBOSE contains 2, the reason for !! 64 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 78 # 65 # 79 # To put more focus on warnings, be less verbo 66 # To put more focus on warnings, be less verbose as default 80 # Use 'make V=1' to see the full commands 67 # Use 'make V=1' to see the full commands 81 68 82 ifeq ("$(origin V)", "command line") 69 ifeq ("$(origin V)", "command line") 83 KBUILD_VERBOSE = $(V) 70 KBUILD_VERBOSE = $(V) 84 endif 71 endif >> 72 ifndef KBUILD_VERBOSE >> 73 KBUILD_VERBOSE = 0 >> 74 endif 85 75 86 quiet = quiet_ !! 76 ifeq ($(KBUILD_VERBOSE),1) 87 Q = @ << 88 << 89 ifneq ($(findstring 1, $(KBUILD_VERBOSE)),) << 90 quiet = 77 quiet = 91 Q = 78 Q = >> 79 else >> 80 quiet=quiet_ >> 81 Q = @ 92 endif 82 endif 93 83 94 # If the user is running make -s (silent mode) 84 # If the user is running make -s (silent mode), suppress echoing of 95 # commands 85 # commands 96 ifneq ($(findstring s,$(firstword -$(MAKEFLAGS << 97 quiet=silent_ << 98 override KBUILD_VERBOSE := << 99 endif << 100 << 101 export quiet Q KBUILD_VERBOSE << 102 86 103 # Call a source code checker (by default, "spa !! 87 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 104 # C compilation. !! 88 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) 105 # !! 89 quiet=silent_ 106 # Use 'make C=1' to enable checking of only re !! 90 tools_silent=s 107 # Use 'make C=2' to enable checking of *all* s !! 91 endif 108 # of whether they are re-compiled or not. !! 92 else # make-3.8x 109 # !! 93 ifneq ($(filter s% -s%,$(MAKEFLAGS)),) 110 # See the file "Documentation/dev-tools/sparse !! 94 quiet=silent_ 111 # including where to get the "sparse" utility. !! 95 tools_silent=-s 112 << 113 ifeq ("$(origin C)", "command line") << 114 KBUILD_CHECKSRC = $(C) << 115 endif 96 endif 116 ifndef KBUILD_CHECKSRC << 117 KBUILD_CHECKSRC = 0 << 118 endif 97 endif 119 98 120 export KBUILD_CHECKSRC !! 99 export quiet Q KBUILD_VERBOSE 121 << 122 # Enable "clippy" (a linter) as part of the Ru << 123 # << 124 # Use 'make CLIPPY=1' to enable it. << 125 ifeq ("$(origin CLIPPY)", "command line") << 126 KBUILD_CLIPPY := $(CLIPPY) << 127 endif << 128 << 129 export KBUILD_CLIPPY << 130 << 131 # Use make M=dir or set the environment variab << 132 # directory of external module to build. Setti << 133 ifeq ("$(origin M)", "command line") << 134 KBUILD_EXTMOD := $(M) << 135 endif << 136 << 137 $(if $(word 2, $(KBUILD_EXTMOD)), \ << 138 $(error building multiple external mod << 139 << 140 $(foreach x, % :, $(if $(findstring $x, $(KBUI << 141 $(error module directory path cannot c << 142 << 143 # Remove trailing slashes << 144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) << 145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM << 146 endif << 147 << 148 export KBUILD_EXTMOD << 149 << 150 # backward compatibility << 151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC << 152 << 153 ifeq ("$(origin W)", "command line") << 154 KBUILD_EXTRA_WARN := $(W) << 155 endif << 156 << 157 export KBUILD_EXTRA_WARN << 158 100 159 # Kbuild will save output files in the current !! 101 # kbuild supports saving output files in a separate directory. 160 # This does not need to match to the root of t !! 102 # To locate output files in a separate directory two syntaxes are supported. 161 # !! 103 # In both cases the working directory must be the root of the kernel src. 162 # For example, you can do this: << 163 # << 164 # cd /dir/to/store/output/files; make -f /dir << 165 # << 166 # If you want to save output files in a differ << 167 # two syntaxes to specify it. << 168 # << 169 # 1) O= 104 # 1) O= 170 # Use "make O=dir/to/store/output/files/" 105 # Use "make O=dir/to/store/output/files/" 171 # 106 # 172 # 2) Set KBUILD_OUTPUT 107 # 2) Set KBUILD_OUTPUT 173 # Set the environment variable KBUILD_OUTPUT t !! 108 # Set the environment variable KBUILD_OUTPUT to point to the directory 174 # export KBUILD_OUTPUT=dir/to/store/output/fil !! 109 # where the output files shall be placed. >> 110 # export KBUILD_OUTPUT=dir/to/store/output/files/ >> 111 # make 175 # 112 # 176 # The O= assignment takes precedence over the 113 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 177 # variable. 114 # variable. 178 115 179 # Do we want to change the working directory? !! 116 # KBUILD_SRC is set on invocation of make in OBJ directory >> 117 # KBUILD_SRC is not intended to be used by the regular user (for now) >> 118 ifeq ($(KBUILD_SRC),) >> 119 >> 120 # OK, Make called in directory where kernel src resides >> 121 # Do we want to locate output files in a separate directory? 180 ifeq ("$(origin O)", "command line") 122 ifeq ("$(origin O)", "command line") 181 KBUILD_OUTPUT := $(O) 123 KBUILD_OUTPUT := $(O) 182 endif 124 endif 183 125 184 ifneq ($(KBUILD_OUTPUT),) !! 126 # That's our default target when none is given on the command line 185 # $(realpath ...) gets empty if the path does !! 127 PHONY := _all 186 $(shell mkdir -p "$(KBUILD_OUTPUT)") !! 128 _all: 187 # $(realpath ...) resolves symlinks << 188 abs_objtree := $(realpath $(KBUILD_OUTPUT)) << 189 $(if $(abs_objtree),,$(error failed to create << 190 endif # ifneq ($(KBUILD_OUTPUT),) << 191 << 192 ifneq ($(words $(subst :, ,$(abs_srctree))), 1 << 193 $(error source directory cannot contain spaces << 194 endif << 195 << 196 export sub_make_done := 1 << 197 << 198 endif # sub_make_done << 199 129 200 ifeq ($(abs_objtree),$(CURDIR)) !! 130 # Cancel implicit rules on top Makefile 201 # Suppress "Entering directory ..." if we are !! 131 $(CURDIR)/Makefile Makefile: ; 202 no-print-directory := --no-print-directory << 203 else << 204 # Recursion to show "Entering directory ..." << 205 need-sub-make := 1 << 206 endif << 207 132 208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 133 ifneq ($(words $(subst :, ,$(CURDIR))), 1) 209 # If --no-print-directory is unset, recurse on !! 134 $(error main directory cannot contain spaces nor colons) 210 # You may end up recursing into __sub-make twi << 211 # behavior change in GNU Make 4.4.1. << 212 need-sub-make := 1 << 213 endif 135 endif 214 136 215 ifeq ($(need-sub-make),1) !! 137 ifneq ($(KBUILD_OUTPUT),) >> 138 # Invoke a second make in the output directory, passing relevant variables >> 139 # check that the output directory actually exists >> 140 saved-output := $(KBUILD_OUTPUT) >> 141 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ >> 142 && /bin/pwd) >> 143 $(if $(KBUILD_OUTPUT),, \ >> 144 $(error failed to create output directory "$(saved-output)")) 216 145 217 PHONY += $(MAKECMDGOALS) __sub-make !! 146 PHONY += $(MAKECMDGOALS) sub-make 218 147 219 $(filter-out $(this-makefile), $(MAKECMDGOALS) !! 148 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 220 @: 149 @: 221 150 222 # Invoke a second make in the output directory !! 151 sub-make: FORCE 223 __sub-make: !! 152 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 153 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 225 -f $(abs_srctree)/Makefile $(MAKECMDGO << 226 154 227 else # need-sub-make !! 155 # Leave processing to above invocation of make >> 156 skip-makefile := 1 >> 157 endif # ifneq ($(KBUILD_OUTPUT),) >> 158 endif # ifeq ($(KBUILD_SRC),) 228 159 229 # We process the rest of the Makefile if this 160 # We process the rest of the Makefile if this is the final invocation of make >> 161 ifeq ($(skip-makefile),) 230 162 231 ifeq ($(abs_srctree),$(abs_objtree)) !! 163 # Do not print "Entering directory ...", 232 # building in the source tree !! 164 # but we want to display it when entering to the output directory 233 srctree := . !! 165 # so that IDEs/editors are able to understand relative filenames. 234 building_out_of_srctree := !! 166 MAKEFLAGS += --no-print-directory 235 else << 236 ifeq ($(abs_srctree)/,$(dir $(abs_objt << 237 # building in a subdirectory o << 238 srctree := .. << 239 else << 240 srctree := $(abs_srctree) << 241 endif << 242 building_out_of_srctree := 1 << 243 endif << 244 << 245 ifneq ($(KBUILD_ABS_SRCTREE),) << 246 srctree := $(abs_srctree) << 247 endif << 248 << 249 objtree := . << 250 167 251 VPATH := !! 168 # Call a source code checker (by default, "sparse") as part of the >> 169 # C compilation. >> 170 # >> 171 # Use 'make C=1' to enable checking of only re-compiled files. >> 172 # Use 'make C=2' to enable checking of *all* source files, regardless >> 173 # of whether they are re-compiled or not. >> 174 # >> 175 # See the file "Documentation/sparse.txt" for more details, including >> 176 # where to get the "sparse" utility. 252 177 253 ifeq ($(KBUILD_EXTMOD),) !! 178 ifeq ("$(origin C)", "command line") 254 ifdef building_out_of_srctree !! 179 KBUILD_CHECKSRC = $(C) 255 VPATH := $(srctree) << 256 endif << 257 endif 180 endif 258 !! 181 ifndef KBUILD_CHECKSRC 259 export building_out_of_srctree srctree objtree !! 182 KBUILD_CHECKSRC = 0 260 << 261 # To make sure we do not include .config for a << 262 # catch them early, and hand them over to scri << 263 # It is allowed to specify more targets when c << 264 # mixing *config targets and build targets. << 265 # For example 'make oldconfig all'. << 266 # Detect when mixed targets is specified, and << 267 # of make so .config is not included in this c << 268 << 269 version_h := include/generated/uapi/linux/vers << 270 << 271 clean-targets := %clean mrproper cleandocs << 272 no-dot-config-targets := $(clean-targets) \ << 273 cscope gtags TAGS tag << 274 $(version_h) headers << 275 %asm-generic kernelve << 276 outputmakefile rustav << 277 no-sync-config-targets := $(no-dot-config-targ << 278 image_name << 279 single-targets := %.a %.i %.ko %.lds %.ll %.ls << 280 << 281 config-build := << 282 mixed-build := << 283 need-config := 1 << 284 may-sync-config := 1 << 285 single-build := << 286 << 287 ifneq ($(filter $(no-dot-config-targets), $(MA << 288 ifeq ($(filter-out $(no-dot-config-targets << 289 need-config := << 290 endif << 291 endif 183 endif 292 184 293 ifneq ($(filter $(no-sync-config-targets), $(M !! 185 # Use make M=dir to specify directory of external module to build 294 ifeq ($(filter-out $(no-sync-config-target !! 186 # Old syntax make ... SUBDIRS=$PWD is still supported 295 may-sync-config := !! 187 # Setting the environment variable KBUILD_EXTMOD take precedence 296 endif !! 188 ifdef SUBDIRS >> 189 KBUILD_EXTMOD ?= $(SUBDIRS) 297 endif 190 endif 298 191 299 need-compiler := $(may-sync-config) !! 192 ifeq ("$(origin M)", "command line") 300 !! 193 KBUILD_EXTMOD := $(M) 301 ifneq ($(KBUILD_EXTMOD),) << 302 may-sync-config := << 303 endif 194 endif 304 195 >> 196 # If building an external module we do not care about the all: rule >> 197 # but instead _all depend on modules >> 198 PHONY += all 305 ifeq ($(KBUILD_EXTMOD),) 199 ifeq ($(KBUILD_EXTMOD),) 306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 200 _all: all 307 config-build := 1 !! 201 else 308 ifneq ($(words $(MAKECMDGOALS)),1) !! 202 _all: modules 309 mixed-build := 1 << 310 endif << 311 endif << 312 endif << 313 << 314 # We cannot build single targets and the other << 315 ifneq ($(filter $(single-targets), $(MAKECMDGO << 316 single-build := 1 << 317 ifneq ($(filter-out $(single-targets), $(M << 318 mixed-build := 1 << 319 endif << 320 endif << 321 << 322 # For "make -j clean all", "make -j mrproper d << 323 ifneq ($(filter $(clean-targets),$(MAKECMDGOAL << 324 ifneq ($(filter-out $(clean-targets),$(MAK << 325 mixed-build := 1 << 326 endif << 327 endif 203 endif 328 204 329 # install and modules_install need also be pro !! 205 ifeq ($(KBUILD_SRC),) 330 ifneq ($(filter install,$(MAKECMDGOALS)),) !! 206 # building in the source tree 331 ifneq ($(filter modules_install,$(MAKECMDG !! 207 srctree := . 332 mixed-build := 1 !! 208 else 333 endif !! 209 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) >> 210 # building in a subdirectory of the source tree >> 211 srctree := .. >> 212 else >> 213 srctree := $(KBUILD_SRC) >> 214 endif 334 endif 215 endif >> 216 objtree := . >> 217 src := $(srctree) >> 218 obj := $(objtree) 335 219 336 ifdef mixed-build !! 220 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 337 # ============================================ << 338 # We're called with mixed targets (*config and << 339 # Handle them one by one. << 340 << 341 PHONY += $(MAKECMDGOALS) __build_one_by_one << 342 << 343 $(MAKECMDGOALS): __build_one_by_one << 344 @: << 345 << 346 __build_one_by_one: << 347 $(Q)set -e; \ << 348 for i in $(MAKECMDGOALS); do \ << 349 $(MAKE) -f $(srctree)/Makefile << 350 done << 351 221 352 else # !mixed-build !! 222 export srctree objtree VPATH 353 223 354 include $(srctree)/scripts/Kbuild.include !! 224 # SUBARCH tells the usermode build what the underlying arch is. That is set 355 !! 225 # first, and if a usermode build is happening, the "ARCH=um" on the command 356 # Read KERNELRELEASE from include/config/kerne !! 226 # line overrides the setting of ARCH below. If a native build is happening, 357 KERNELRELEASE = $(call read-file, include/conf !! 227 # then ARCH is assigned, getting whatever value it gets normally, and 358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. !! 228 # SUBARCH is subsequently ignored. 359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA !! 229 360 !! 230 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ 361 include $(srctree)/scripts/subarch.include !! 231 -e s/sun4u/sparc64/ \ >> 232 -e s/arm.*/arm/ -e s/sa110/arm/ \ >> 233 -e s/s390x/s390/ -e s/parisc64/parisc/ \ >> 234 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ >> 235 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) 362 236 363 # Cross compiling and selecting different set 237 # Cross compiling and selecting different set of gcc/bin-utils 364 # -------------------------------------------- 238 # --------------------------------------------------------------------------- 365 # 239 # 366 # When performing cross compilation for other 240 # When performing cross compilation for other architectures ARCH shall be set 367 # to the target architecture. (See arch/* for 241 # to the target architecture. (See arch/* for the possibilities). 368 # ARCH can be set during invocation of make: 242 # ARCH can be set during invocation of make: 369 # make ARCH=arm64 !! 243 # make ARCH=ia64 370 # Another way is to have ARCH set in the envir 244 # Another way is to have ARCH set in the environment. 371 # The default ARCH is the host where make is e 245 # The default ARCH is the host where make is executed. 372 246 373 # CROSS_COMPILE specify the prefix used for al 247 # CROSS_COMPILE specify the prefix used for all executables used 374 # during compilation. Only gcc and related bin 248 # during compilation. Only gcc and related bin-utils executables 375 # are prefixed with $(CROSS_COMPILE). 249 # are prefixed with $(CROSS_COMPILE). 376 # CROSS_COMPILE can be set on the command line 250 # CROSS_COMPILE can be set on the command line 377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 251 # make CROSS_COMPILE=ia64-linux- 378 # Alternatively CROSS_COMPILE can be set in th 252 # Alternatively CROSS_COMPILE can be set in the environment. >> 253 # A third alternative is to store a setting in .config so that plain >> 254 # "make" in the configured kernel build directory always uses that. 379 # Default value for CROSS_COMPILE is not to pr 255 # Default value for CROSS_COMPILE is not to prefix executables 380 # Note: Some architectures assign CROSS_COMPIL 256 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 381 ARCH ?= $(SUBARCH) 257 ARCH ?= $(SUBARCH) >> 258 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) 382 259 383 # Architecture as present in compile.h 260 # Architecture as present in compile.h 384 UTS_MACHINE := $(ARCH) 261 UTS_MACHINE := $(ARCH) 385 SRCARCH := $(ARCH) 262 SRCARCH := $(ARCH) 386 263 387 # Additional ARCH settings for x86 264 # Additional ARCH settings for x86 388 ifeq ($(ARCH),i386) 265 ifeq ($(ARCH),i386) 389 SRCARCH := x86 266 SRCARCH := x86 390 endif 267 endif 391 ifeq ($(ARCH),x86_64) 268 ifeq ($(ARCH),x86_64) 392 SRCARCH := x86 269 SRCARCH := x86 393 endif 270 endif 394 271 395 # Additional ARCH settings for sparc 272 # Additional ARCH settings for sparc 396 ifeq ($(ARCH),sparc32) 273 ifeq ($(ARCH),sparc32) 397 SRCARCH := sparc 274 SRCARCH := sparc 398 endif 275 endif 399 ifeq ($(ARCH),sparc64) 276 ifeq ($(ARCH),sparc64) 400 SRCARCH := sparc 277 SRCARCH := sparc 401 endif 278 endif 402 279 403 # Additional ARCH settings for parisc !! 280 # Additional ARCH settings for sh 404 ifeq ($(ARCH),parisc64) !! 281 ifeq ($(ARCH),sh64) 405 SRCARCH := parisc !! 282 SRCARCH := sh 406 endif 283 endif 407 284 408 export cross_compiling := !! 285 # Additional ARCH settings for tile 409 ifneq ($(SRCARCH),$(SUBARCH)) !! 286 ifeq ($(ARCH),tilepro) 410 cross_compiling := 1 !! 287 SRCARCH := tile >> 288 endif >> 289 ifeq ($(ARCH),tilegx) >> 290 SRCARCH := tile 411 endif 291 endif 412 292 >> 293 # Where to locate arch specific headers >> 294 hdr-arch := $(SRCARCH) >> 295 413 KCONFIG_CONFIG ?= .config 296 KCONFIG_CONFIG ?= .config 414 export KCONFIG_CONFIG 297 export KCONFIG_CONFIG 415 298 416 # SHELL used by kbuild 299 # SHELL used by kbuild 417 CONFIG_SHELL := sh !! 300 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ >> 301 else if [ -x /bin/bash ]; then echo /bin/bash; \ >> 302 else echo sh; fi ; fi) >> 303 >> 304 HOSTCC = gcc >> 305 HOSTCXX = g++ >> 306 HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 >> 307 HOSTCXXFLAGS = -O2 >> 308 >> 309 # Decide whether to build built-in, modular, or both. >> 310 # Normally, just do built-in. 418 311 419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS !! 312 KBUILD_MODULES := 420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG !! 313 KBUILD_BUILTIN := 1 421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d << 422 314 423 ifneq ($(LLVM),) !! 315 # If we have only "make modules", don't compile built-in objects. 424 ifneq ($(filter %/,$(LLVM)),) !! 316 ifeq ($(MAKECMDGOALS),modules) 425 LLVM_PREFIX := $(LLVM) !! 317 KBUILD_BUILTIN := 426 else ifneq ($(filter -%,$(LLVM)),) << 427 LLVM_SUFFIX := $(LLVM) << 428 endif 318 endif 429 319 430 HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) !! 320 # If we have "make <whatever> modules", compile modules 431 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX) !! 321 # in addition to whatever we do anyway. 432 else !! 322 # Just "make" or "make all" shall build modules as well 433 HOSTCC = gcc !! 323 434 HOSTCXX = g++ !! 324 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) >> 325 KBUILD_MODULES := 1 435 endif 326 endif 436 HOSTRUSTC = rustc << 437 HOSTPKG_CONFIG = pkg-config << 438 327 439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto !! 328 ifeq ($(MAKECMDGOALS),) 440 -O2 -fomit-frame-poin !! 329 KBUILD_MODULES := 1 441 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) !! 330 endif 442 KBUILD_USERLDFLAGS := $(USERLDFLAGS) !! 331 443 !! 332 export KBUILD_MODULES KBUILD_BUILTIN 444 # These flags apply to all Rust code in the tr !! 333 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 445 # host programs. !! 334 446 export rust_common_flags := --edition=2021 \ !! 335 # We need some generic definitions (do not try to remake the file). 447 -Zbinary_dep_depin !! 336 scripts/Kbuild.include: ; 448 -Astable_features !! 337 include scripts/Kbuild.include 449 -Dunsafe_op_in_uns << 450 -Dnon_ascii_idents << 451 -Wrust_2018_idioms << 452 -Wunreachable_pub << 453 -Wmissing_docs \ << 454 -Wrustdoc::missing << 455 -Wclippy::all \ << 456 -Wclippy::mut_mut << 457 -Wclippy::needless << 458 -Wclippy::needless << 459 -Wclippy::no_mangl << 460 -Wclippy::dbg_macr << 461 << 462 KBUILD_HOSTCFLAGS := $(KBUILD_USERHOSTCFLAGS << 463 $(HOSTCFLAGS) -I $(srct << 464 KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CF << 465 -I $(srctree)/scripts/i << 466 KBUILD_HOSTRUSTFLAGS := $(rust_common_flags) - << 467 -Zallow-features= $(HO << 468 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(H << 469 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOST << 470 338 471 # Make variables (CC, etc...) 339 # Make variables (CC, etc...) 472 CPP = $(CC) -E !! 340 AS = $(CROSS_COMPILE)as 473 ifneq ($(LLVM),) << 474 CC = $(LLVM_PREFIX)clang$(LLVM_SU << 475 LD = $(LLVM_PREFIX)ld.lld$(LLVM_S << 476 AR = $(LLVM_PREFIX)llvm-ar$(LLVM_ << 477 NM = $(LLVM_PREFIX)llvm-nm$(LLVM_ << 478 OBJCOPY = $(LLVM_PREFIX)llvm-objcopy$( << 479 OBJDUMP = $(LLVM_PREFIX)llvm-objdump$( << 480 READELF = $(LLVM_PREFIX)llvm-readelf$( << 481 STRIP = $(LLVM_PREFIX)llvm-strip$(LL << 482 else << 483 CC = $(CROSS_COMPILE)gcc << 484 LD = $(CROSS_COMPILE)ld 341 LD = $(CROSS_COMPILE)ld >> 342 CC = $(CROSS_COMPILE)gcc >> 343 CPP = $(CC) -E 485 AR = $(CROSS_COMPILE)ar 344 AR = $(CROSS_COMPILE)ar 486 NM = $(CROSS_COMPILE)nm 345 NM = $(CROSS_COMPILE)nm >> 346 STRIP = $(CROSS_COMPILE)strip 487 OBJCOPY = $(CROSS_COMPILE)objcopy 347 OBJCOPY = $(CROSS_COMPILE)objcopy 488 OBJDUMP = $(CROSS_COMPILE)objdump 348 OBJDUMP = $(CROSS_COMPILE)objdump 489 READELF = $(CROSS_COMPILE)readelf << 490 STRIP = $(CROSS_COMPILE)strip << 491 endif << 492 RUSTC = rustc << 493 RUSTDOC = rustdoc << 494 RUSTFMT = rustfmt << 495 CLIPPY_DRIVER = clippy-driver << 496 BINDGEN = bindgen << 497 PAHOLE = pahole << 498 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve << 499 LEX = flex << 500 YACC = bison << 501 AWK = awk 349 AWK = awk >> 350 GENKSYMS = scripts/genksyms/genksyms 502 INSTALLKERNEL := installkernel 351 INSTALLKERNEL := installkernel >> 352 DEPMOD = depmod 503 PERL = perl 353 PERL = perl 504 PYTHON3 = python3 !! 354 PYTHON = python 505 CHECK = sparse 355 CHECK = sparse 506 BASH = bash << 507 KGZIP = gzip << 508 KBZIP2 = bzip2 << 509 KLZOP = lzop << 510 LZMA = lzma << 511 LZ4 = lz4c << 512 XZ = xz << 513 ZSTD = zstd << 514 356 515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC 357 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 516 -Wbitwise -Wno-return-void - !! 358 -Wbitwise -Wno-return-void $(CF) 517 NOSTDINC_FLAGS := << 518 CFLAGS_MODULE = 359 CFLAGS_MODULE = 519 RUSTFLAGS_MODULE = << 520 AFLAGS_MODULE = 360 AFLAGS_MODULE = 521 LDFLAGS_MODULE = 361 LDFLAGS_MODULE = 522 CFLAGS_KERNEL = 362 CFLAGS_KERNEL = 523 RUSTFLAGS_KERNEL = << 524 AFLAGS_KERNEL = 363 AFLAGS_KERNEL = 525 LDFLAGS_vmlinux = !! 364 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage -fno-tree-loop-im >> 365 526 366 527 # Use USERINCLUDE when you must reference the 367 # Use USERINCLUDE when you must reference the UAPI directories only. 528 USERINCLUDE := \ 368 USERINCLUDE := \ 529 -I$(srctree)/arch/$(SRCARCH)/i !! 369 -I$(srctree)/arch/$(hdr-arch)/include/uapi \ 530 -I$(objtree)/arch/$(SRCARCH)/i !! 370 -Iarch/$(hdr-arch)/include/generated/uapi \ 531 -I$(srctree)/include/uapi \ 371 -I$(srctree)/include/uapi \ 532 -I$(objtree)/include/generated !! 372 -Iinclude/generated/uapi \ 533 -include $(srctree)/include/li << 534 -include $(srctree)/include/li 373 -include $(srctree)/include/linux/kconfig.h 535 374 536 # Use LINUXINCLUDE when you must reference the 375 # Use LINUXINCLUDE when you must reference the include/ directory. 537 # Needed to be compatible with the O= option 376 # Needed to be compatible with the O= option 538 LINUXINCLUDE := \ 377 LINUXINCLUDE := \ 539 -I$(srctree)/arch/$(SRCARCH)/i !! 378 -I$(srctree)/arch/$(hdr-arch)/include \ 540 -I$(objtree)/arch/$(SRCARCH)/i !! 379 -Iarch/$(hdr-arch)/include/generated/uapi \ 541 $(if $(building_out_of_srctree !! 380 -Iarch/$(hdr-arch)/include/generated \ 542 -I$(objtree)/include \ !! 381 $(if $(KBUILD_SRC), -I$(srctree)/include) \ >> 382 -Iinclude \ 543 $(USERINCLUDE) 383 $(USERINCLUDE) 544 384 545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE !! 385 KBUILD_CPPFLAGS := -D__KERNEL__ 546 386 547 KBUILD_CFLAGS := !! 387 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 548 KBUILD_CFLAGS += -std=gnu11 !! 388 -fno-strict-aliasing -fno-common \ 549 KBUILD_CFLAGS += -fshort-wchar !! 389 -Werror-implicit-function-declaration \ 550 KBUILD_CFLAGS += -funsigned-char !! 390 -Wno-format-security \ 551 KBUILD_CFLAGS += -fno-common !! 391 -std=gnu89 $(call cc-option,-fno-PIE) 552 KBUILD_CFLAGS += -fno-PIE << 553 KBUILD_CFLAGS += -fno-strict-aliasing << 554 392 555 KBUILD_CPPFLAGS := -D__KERNEL__ << 556 KBUILD_RUSTFLAGS := $(rust_common_flags) \ << 557 -Cpanic=abort -Cembed-bitc << 558 -Cforce-unwind-tables=n -C << 559 -Csymbol-mangling-version= << 560 -Crelocation-model=static << 561 -Zfunction-sections=n \ << 562 -Wclippy::float_arithmetic << 563 393 564 KBUILD_AFLAGS_KERNEL := 394 KBUILD_AFLAGS_KERNEL := 565 KBUILD_CFLAGS_KERNEL := 395 KBUILD_CFLAGS_KERNEL := 566 KBUILD_RUSTFLAGS_KERNEL := !! 396 KBUILD_AFLAGS := -D__ASSEMBLY__ $(call cc-option,-fno-PIE) 567 KBUILD_AFLAGS_MODULE := -DMODULE 397 KBUILD_AFLAGS_MODULE := -DMODULE 568 KBUILD_CFLAGS_MODULE := -DMODULE 398 KBUILD_CFLAGS_MODULE := -DMODULE 569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE !! 399 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 570 KBUILD_LDFLAGS_MODULE := << 571 KBUILD_LDFLAGS := << 572 CLANG_FLAGS := << 573 << 574 ifeq ($(KBUILD_CLIPPY),1) << 575 RUSTC_OR_CLIPPY_QUIET := CLIPPY << 576 RUSTC_OR_CLIPPY = $(CLIPPY_DRIVER) << 577 else << 578 RUSTC_OR_CLIPPY_QUIET := RUSTC << 579 RUSTC_OR_CLIPPY = $(RUSTC) << 580 endif << 581 400 582 # Allows the usage of unstable features in sta !! 401 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 583 export RUSTC_BOOTSTRAP := 1 !! 402 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) >> 403 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 584 404 585 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K !! 405 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 586 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q !! 406 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 587 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS !! 407 export CPP AR NM STRIP OBJCOPY OBJDUMP 588 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF !! 408 export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE 589 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ !! 409 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 590 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD !! 410 591 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS !! 411 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 592 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS !! 412 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV 593 !! 413 export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE 594 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC << 595 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU << 596 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF << 597 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 414 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 598 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 415 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 599 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 416 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL >> 417 export KBUILD_ARFLAGS >> 418 >> 419 # When compiling out-of-tree modules, put MODVERDIR in the module >> 420 # tree rather than in the kernel tree. The kernel tree might >> 421 # even be read-only. >> 422 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 600 423 601 # Files to ignore in find ... statements 424 # Files to ignore in find ... statements 602 425 603 export RCS_FIND_IGNORE := \( -name SCCS -o -na 426 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 604 -name CVS -o -name . 427 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 605 -prune -o 428 -prune -o >> 429 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ >> 430 --exclude CVS --exclude .pc --exclude .hg --exclude .git 606 431 607 # ============================================ 432 # =========================================================================== 608 # Rules shared between *config targets and bui 433 # Rules shared between *config targets and build targets 609 434 610 # Basic helpers built in scripts/basic/ !! 435 # Basic helpers built in scripts/ 611 PHONY += scripts_basic 436 PHONY += scripts_basic 612 scripts_basic: 437 scripts_basic: 613 $(Q)$(MAKE) $(build)=scripts/basic 438 $(Q)$(MAKE) $(build)=scripts/basic >> 439 $(Q)rm -f .tmp_quiet_recordmcount >> 440 >> 441 # To avoid any implicit rule to kick in, define an empty command. >> 442 scripts/basic/%: scripts_basic ; 614 443 615 PHONY += outputmakefile 444 PHONY += outputmakefile 616 ifdef building_out_of_srctree << 617 # Before starting out-of-tree build, make sure << 618 # outputmakefile generates a Makefile in the o 445 # outputmakefile generates a Makefile in the output directory, if using a 619 # separate output directory. This allows conve 446 # separate output directory. This allows convenient use of make in the 620 # output directory. 447 # output directory. 621 # At the same time when output Makefile genera << 622 # ignore whole output directory << 623 << 624 quiet_cmd_makefile = GEN Makefile << 625 cmd_makefile = { \ << 626 echo "\# Automatically generated by $( << 627 echo "include $(srctree)/Makefile"; \ << 628 } > Makefile << 629 << 630 outputmakefile: 448 outputmakefile: 631 @if [ -f $(srctree)/.config -o \ !! 449 ifneq ($(KBUILD_SRC),) 632 -d $(srctree)/include/config << 633 -d $(srctree)/arch/$(SRCARCH) << 634 echo >&2 "***"; \ << 635 echo >&2 "*** The source tree << 636 echo >&2 "*** in $(abs_srctree << 637 echo >&2 "***"; \ << 638 false; \ << 639 fi << 640 $(Q)ln -fsn $(srctree) source 450 $(Q)ln -fsn $(srctree) source 641 $(call cmd,makefile) !! 451 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 642 $(Q)test -e .gitignore || \ !! 452 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 643 { echo "# this is build directory, ign << 644 endif 453 endif 645 454 646 # The expansion should be delayed until arch/$ !! 455 # Support for using generic headers in asm-generic 647 # Some architectures define CROSS_COMPILE in a !! 456 PHONY += asm-generic 648 # CC_VERSION_TEXT and RUSTC_VERSION_TEXT are r !! 457 asm-generic: 649 # need export), and from include/config/auto.c !! 458 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 650 # upgrade. !! 459 src=asm obj=arch/$(SRCARCH)/include/generated/asm 651 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC !! 460 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 652 RUSTC_VERSION_TEXT = $(subst $(pound),,$(shell !! 461 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm 653 462 654 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), !! 463 # To make sure we do not include .config for any of the *config targets 655 include $(srctree)/scripts/Makefile.clang !! 464 # catch them early, and hand them over to scripts/kconfig/Makefile >> 465 # It is allowed to specify more targets when calling make, including >> 466 # mixing *config targets and build targets. >> 467 # For example 'make oldconfig all'. >> 468 # Detect when mixed targets is specified, and make a second invocation >> 469 # of make so .config is not included in this case either (for *config). >> 470 >> 471 version_h := include/generated/uapi/linux/version.h >> 472 old_version_h := include/linux/version.h >> 473 >> 474 no-dot-config-targets := clean mrproper distclean \ >> 475 cscope gtags TAGS tags help% %docs check% coccicheck \ >> 476 $(version_h) headers_% archheaders archscripts \ >> 477 kernelversion %src-pkg >> 478 >> 479 config-targets := 0 >> 480 mixed-targets := 0 >> 481 dot-config := 1 >> 482 >> 483 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) >> 484 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) >> 485 dot-config := 0 >> 486 endif 656 endif 487 endif 657 488 658 # Include this also for config targets because !! 489 ifeq ($(KBUILD_EXTMOD),) 659 # cc-cross-prefix to determine CROSS_COMPILE. !! 490 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 660 ifdef need-compiler !! 491 config-targets := 1 661 include $(srctree)/scripts/Makefile.compiler !! 492 ifneq ($(words $(MAKECMDGOALS)),1) >> 493 mixed-targets := 1 >> 494 endif >> 495 endif 662 endif 496 endif >> 497 # install and module_install need also be processed one by one >> 498 ifneq ($(filter install,$(MAKECMDGOALS)),) >> 499 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) >> 500 mixed-targets := 1 >> 501 endif >> 502 endif >> 503 >> 504 ifeq ($(mixed-targets),1) >> 505 # =========================================================================== >> 506 # We're called with mixed targets (*config and build targets). >> 507 # Handle them one by one. >> 508 >> 509 PHONY += $(MAKECMDGOALS) __build_one_by_one >> 510 >> 511 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one >> 512 @: >> 513 >> 514 __build_one_by_one: >> 515 $(Q)set -e; \ >> 516 for i in $(MAKECMDGOALS); do \ >> 517 $(MAKE) -f $(srctree)/Makefile $$i; \ >> 518 done 663 519 664 ifdef config-build !! 520 else >> 521 ifeq ($(config-targets),1) 665 # ============================================ 522 # =========================================================================== 666 # *config targets only - make sure prerequisit 523 # *config targets only - make sure prerequisites are updated, and descend 667 # in scripts/kconfig to make the *config targe 524 # in scripts/kconfig to make the *config target 668 525 669 # Read arch-specific Makefile to set KBUILD_DE !! 526 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 670 # KBUILD_DEFCONFIG may point out an alternativ 527 # KBUILD_DEFCONFIG may point out an alternative default configuration 671 # used for 'make defconfig' 528 # used for 'make defconfig' 672 include $(srctree)/arch/$(SRCARCH)/Makefile !! 529 include arch/$(SRCARCH)/Makefile 673 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS !! 530 export KBUILD_DEFCONFIG KBUILD_KCONFIG 674 531 675 config: outputmakefile scripts_basic FORCE !! 532 config: scripts_basic outputmakefile FORCE 676 $(Q)$(MAKE) $(build)=scripts/kconfig $ 533 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 677 534 678 %config: outputmakefile scripts_basic FORCE !! 535 %config: scripts_basic outputmakefile FORCE 679 $(Q)$(MAKE) $(build)=scripts/kconfig $ 536 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 680 537 681 else #!config-build !! 538 else 682 # ============================================ 539 # =========================================================================== 683 # Build targets only - this includes vmlinux, !! 540 # Build targets only - this includes vmlinux, arch specific targets, clean 684 # targets and others. In general all targets e 541 # targets and others. In general all targets except *config targets. 685 542 686 # If building an external module we do not car << 687 # but instead __all depend on modules << 688 PHONY += all << 689 ifeq ($(KBUILD_EXTMOD),) 543 ifeq ($(KBUILD_EXTMOD),) 690 __all: all !! 544 # Additional helpers built in scripts/ 691 else !! 545 # Carefully list dependencies so we do not try to build scripts twice 692 __all: modules !! 546 # in parallel 693 endif !! 547 PHONY += scripts 694 !! 548 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ 695 targets := !! 549 asm-generic 696 !! 550 $(Q)$(MAKE) $(build)=$(@) 697 # Decide whether to build built-in, modular, o << 698 # Normally, just do built-in. << 699 << 700 KBUILD_MODULES := << 701 KBUILD_BUILTIN := 1 << 702 << 703 # If we have only "make modules", don't compil << 704 ifeq ($(MAKECMDGOALS),modules) << 705 KBUILD_BUILTIN := << 706 endif << 707 << 708 # If we have "make <whatever> modules", compil << 709 # in addition to whatever we do anyway. << 710 # Just "make" or "make all" shall build module << 711 << 712 ifneq ($(filter all modules nsdeps %compile_co << 713 KBUILD_MODULES := 1 << 714 endif << 715 << 716 ifeq ($(MAKECMDGOALS),) << 717 KBUILD_MODULES := 1 << 718 endif << 719 << 720 export KBUILD_MODULES KBUILD_BUILTIN << 721 << 722 ifdef need-config << 723 include include/config/auto.conf << 724 endif << 725 551 726 ifeq ($(KBUILD_EXTMOD),) << 727 # Objects we will link into vmlinux / subdirs 552 # Objects we will link into vmlinux / subdirs we need to visit 728 core-y := !! 553 init-y := init/ 729 drivers-y := !! 554 drivers-y := drivers/ sound/ firmware/ >> 555 net-y := net/ 730 libs-y := lib/ 556 libs-y := lib/ >> 557 core-y := usr/ >> 558 virt-y := virt/ 731 endif # KBUILD_EXTMOD 559 endif # KBUILD_EXTMOD 732 560 733 # The all: target is the default when no targe !! 561 ifeq ($(dot-config),1) 734 # command line. !! 562 # Read in config 735 # This allow a user to issue only 'make' to bu !! 563 -include include/config/auto.conf 736 # Defaults to vmlinux, but the arch makefile u << 737 all: vmlinux << 738 << 739 CFLAGS_GCOV := -fprofile-arcs -ftest-cover << 740 ifdef CONFIG_CC_IS_GCC << 741 CFLAGS_GCOV += -fno-tree-loop-im << 742 endif << 743 export CFLAGS_GCOV << 744 564 745 # The arch Makefiles can override CC_FLAGS_FTR !! 565 ifeq ($(KBUILD_EXTMOD),) 746 ifdef CONFIG_FUNCTION_TRACER !! 566 # Read in dependencies to all Kconfig* files, make sure to run 747 CC_FLAGS_FTRACE := -pg !! 567 # oldconfig if changes are detected. 748 endif !! 568 -include include/config/auto.conf.cmd 749 !! 569 750 include $(srctree)/arch/$(SRCARCH)/Makefile !! 570 # To avoid any implicit rule to kick in, define an empty command 751 !! 571 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 752 ifdef need-config !! 572 753 ifdef may-sync-config !! 573 # If .config is newer than include/config/auto.conf, someone tinkered 754 # Read in dependencies to all Kconfig* files, !! 574 # with it and forgot to run make oldconfig. 755 # changes are detected. This should be include !! 575 # if auto.conf.cmd is missing then we are probably in a cleaned tree so 756 # because some architectures define CROSS_COMP !! 576 # we execute the config step to be sure to catch updated Kconfig files 757 include include/config/auto.conf.cmd !! 577 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 758 !! 578 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 759 $(KCONFIG_CONFIG): !! 579 else 760 @echo >&2 '***' !! 580 # external modules needs include/generated/autoconf.h and include/config/auto.conf 761 @echo >&2 '*** Configuration file "$@" !! 581 # but do not care if they are up-to-date. Use auto.conf to trigger the test 762 @echo >&2 '***' << 763 @echo >&2 '*** Please run some configu << 764 @echo >&2 '*** "make menuconfig" or "m << 765 @echo >&2 '***' << 766 @/bin/false << 767 << 768 # The actual configuration files used during t << 769 # include/generated/ and include/config/. Upda << 770 # include/config/auto.conf (which mirrors .con << 771 # << 772 # This exploits the 'multi-target pattern rule << 773 # The syncconfig should be executed only once << 774 # (Note: use the grouped target '&:' when we b << 775 # << 776 # Do not use $(call cmd,...) here. That would << 777 # so you cannot notice that Kconfig is waiting << 778 %/config/auto.conf %/config/auto.conf.cmd %/ge << 779 $(Q)$(kecho) " SYNC $@" << 780 $(Q)$(MAKE) -f $(srctree)/Makefile syn << 781 else # !may-sync-config << 782 # External modules and some install targets ne << 783 # and include/config/auto.conf but do not care << 784 # Use auto.conf to trigger the test << 785 PHONY += include/config/auto.conf 582 PHONY += include/config/auto.conf 786 583 787 include/config/auto.conf: 584 include/config/auto.conf: 788 @test -e include/generated/autoconf.h !! 585 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 789 echo >&2; 586 echo >&2; \ 790 echo >&2 " ERROR: Kernel configuratio 587 echo >&2 " ERROR: Kernel configuration is invalid."; \ 791 echo >&2 " include/generated/a 588 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 792 echo >&2 " Run 'make oldconfig 589 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 793 echo >&2 ; 590 echo >&2 ; \ 794 /bin/false) 591 /bin/false) 795 592 796 endif # may-sync-config !! 593 endif # KBUILD_EXTMOD 797 endif # need-config !! 594 >> 595 else >> 596 # Dummy target needed, because used as prerequisite >> 597 include/config/auto.conf: ; >> 598 endif # $(dot-config) >> 599 >> 600 # The all: target is the default when no target is given on the >> 601 # command line. >> 602 # This allow a user to issue only 'make' to build a kernel including modules >> 603 # Defaults to vmlinux, but the arch makefile usually adds further targets >> 604 all: vmlinux 798 605 799 KBUILD_CFLAGS += -fno-delete-null-pointer-ch !! 606 ifeq ($(cc-name),clang) >> 607 ifneq ($(CROSS_COMPILE),) >> 608 CLANG_TARGET := --target=$(notdir $(CROSS_COMPILE:%-=%)) >> 609 GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) >> 610 CLANG_PREFIX := --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE)) >> 611 GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) >> 612 endif >> 613 ifneq ($(GCC_TOOLCHAIN),) >> 614 CLANG_GCC_TC := --gcc-toolchain=$(GCC_TOOLCHAIN) >> 615 endif >> 616 KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX) >> 617 KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX) >> 618 KBUILD_CFLAGS += $(call cc-option, -no-integrated-as) >> 619 KBUILD_AFLAGS += $(call cc-option, -no-integrated-as) >> 620 endif >> 621 >> 622 # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default >> 623 # values of the respective KBUILD_* variables >> 624 ARCH_CPPFLAGS := >> 625 ARCH_AFLAGS := >> 626 ARCH_CFLAGS := >> 627 include arch/$(SRCARCH)/Makefile >> 628 >> 629 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) >> 630 KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) >> 631 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) >> 632 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) >> 633 KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context) >> 634 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) >> 635 KBUILD_CFLAGS += $(call cc-disable-warning, attribute-alias) 800 636 801 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE !! 637 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 802 KBUILD_CFLAGS += -O2 !! 638 KBUILD_CFLAGS += -Os 803 KBUILD_RUSTFLAGS += -Copt-level=2 !! 639 else 804 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE !! 640 ifdef CONFIG_PROFILE_ALL_BRANCHES 805 KBUILD_CFLAGS += -Os !! 641 KBUILD_CFLAGS += -O2 806 KBUILD_RUSTFLAGS += -Copt-level=s !! 642 else 807 endif !! 643 KBUILD_CFLAGS += -O2 808 !! 644 endif 809 # Always set `debug-assertions` and `overflow- !! 645 endif 810 # depends on `opt-level` and `debug-assertions << 811 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( << 812 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C << 813 646 814 # Tell gcc to never replace conditional load w 647 # Tell gcc to never replace conditional load with a non-conditional one 815 ifdef CONFIG_CC_IS_GCC << 816 # gcc-10 renamed --param=allow-store-data-race << 817 # -fno-allow-store-data-races. << 818 KBUILD_CFLAGS += $(call cc-option,--param=al 648 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 819 KBUILD_CFLAGS += $(call cc-option,-fno-allow 649 KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) >> 650 >> 651 # check for 'asm goto' >> 652 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y) >> 653 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO >> 654 KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO 820 endif 655 endif 821 656 822 ifdef CONFIG_READABLE_ASM 657 ifdef CONFIG_READABLE_ASM 823 # Disable optimizations that make assembler li 658 # Disable optimizations that make assembler listings hard to read. 824 # reorder blocks reorders the control in the f 659 # reorder blocks reorders the control in the function 825 # ipa clone creates specialized cloned functio 660 # ipa clone creates specialized cloned functions 826 # partial inlining inlines only parts of funct 661 # partial inlining inlines only parts of functions 827 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- !! 662 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ >> 663 $(call cc-option,-fno-ipa-cp-clone,) \ >> 664 $(call cc-option,-fno-partial-inlining) 828 endif 665 endif 829 666 830 stackp-flags-y !! 667 ifneq ($(CONFIG_FRAME_WARN),0) 831 stackp-flags-$(CONFIG_STACKPROTECTOR) !! 668 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 832 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) !! 669 endif 833 670 834 KBUILD_CFLAGS += $(stackp-flags-y) !! 671 # Handle stack protector mode. >> 672 # >> 673 # Since kbuild can potentially perform two passes (first with the old >> 674 # .config values and then with updated .config values), we cannot error out >> 675 # if a desired compiler option is unsupported. If we were to error, kbuild >> 676 # could never get to the second pass and actually notice that we changed >> 677 # the option to something that was supported. >> 678 # >> 679 # Additionally, we don't want to fallback and/or silently change which compiler >> 680 # flags will be used, since that leads to producing kernels with different >> 681 # security feature characteristics depending on the compiler used. ("But I >> 682 # selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") >> 683 # >> 684 # The middle ground is to warn here so that the failed option is obvious, but >> 685 # to let the build fail with bad compiler flags so that we can't produce a >> 686 # kernel when there is a CONFIG and compiler mismatch. >> 687 # >> 688 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR >> 689 stackp-flag := -fstack-protector >> 690 ifeq ($(call cc-option, $(stackp-flag)),) >> 691 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \ >> 692 -fstack-protector not supported by compiler) >> 693 endif >> 694 else >> 695 ifdef CONFIG_CC_STACKPROTECTOR_STRONG >> 696 stackp-flag := -fstack-protector-strong >> 697 ifeq ($(call cc-option, $(stackp-flag)),) >> 698 $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \ >> 699 -fstack-protector-strong not supported by compiler) >> 700 endif >> 701 else >> 702 # Force off for distro compilers that enable stack protector by default. >> 703 stackp-flag := $(call cc-option, -fno-stack-protector) >> 704 endif >> 705 endif >> 706 KBUILD_CFLAGS += $(stackp-flag) 835 707 836 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning !! 708 ifeq ($(cc-name),clang) 837 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) !! 709 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) >> 710 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) >> 711 KBUILD_CFLAGS += $(call cc-disable-warning, gnu) >> 712 # Quiet clang warning: comparison of unsigned expression < 0 is always false >> 713 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) >> 714 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the >> 715 # source of a reference will be _MergedGlobals and not on of the whitelisted names. >> 716 # See modpost pattern 2 >> 717 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) >> 718 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) >> 719 endif >> 720 >> 721 # These warnings generated too much noise in a regular build. >> 722 # Use make W=1 to enable them (see scripts/Makefile.extrawarn) >> 723 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 838 724 >> 725 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) 839 ifdef CONFIG_FRAME_POINTER 726 ifdef CONFIG_FRAME_POINTER 840 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 727 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 841 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y << 842 else 728 else 843 # Some targets (ARM with Thumb2, for example), 729 # Some targets (ARM with Thumb2, for example), can't be built with frame 844 # pointers. For those, we don't have FUNCTION 730 # pointers. For those, we don't have FUNCTION_TRACER automatically 845 # select FRAME_POINTER. However, FUNCTION_TRA 731 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 846 # incompatible with -fomit-frame-pointer with 732 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 847 # -fomit-frame-pointer with FUNCTION_TRACER. 733 # -fomit-frame-pointer with FUNCTION_TRACER. 848 # In the Rust target specification, "frame-poi << 849 # to "may-omit". << 850 ifndef CONFIG_FUNCTION_TRACER 734 ifndef CONFIG_FUNCTION_TRACER 851 KBUILD_CFLAGS += -fomit-frame-pointer 735 KBUILD_CFLAGS += -fomit-frame-pointer 852 endif 736 endif 853 endif 737 endif 854 738 855 # Initialize all stack variables with a 0xAA p !! 739 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) 856 ifdef CONFIG_INIT_STACK_ALL_PATTERN << 857 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat << 858 endif << 859 740 860 # Initialize all stack variables with a zero v !! 741 ifdef CONFIG_DEBUG_INFO 861 ifdef CONFIG_INIT_STACK_ALL_ZERO !! 742 ifdef CONFIG_DEBUG_INFO_SPLIT 862 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer !! 743 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) 863 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER !! 744 else 864 # https://github.com/llvm/llvm-project/issues/ !! 745 KBUILD_CFLAGS += -g 865 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi << 866 export CC_AUTO_VAR_INIT_ZERO_ENABLER << 867 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA << 868 endif 746 endif >> 747 KBUILD_AFLAGS += -Wa,-gdwarf-2 >> 748 endif >> 749 ifdef CONFIG_DEBUG_INFO_DWARF4 >> 750 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) 869 endif 751 endif 870 752 871 # While VLAs have been removed, GCC produces u !! 753 ifdef CONFIG_DEBUG_INFO_REDUCED 872 # for the randomize_kstack_offset feature. Dis !! 754 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 873 KBUILD_CFLAGS += $(call cc-option, -fno-stac !! 755 $(call cc-option,-fno-var-tracking) 874 << 875 # Clear used registers at func exit (to reduce << 876 ifdef CONFIG_ZERO_CALL_USED_REGS << 877 KBUILD_CFLAGS += -fzero-call-used-regs=used- << 878 endif 756 endif 879 757 880 ifdef CONFIG_FUNCTION_TRACER 758 ifdef CONFIG_FUNCTION_TRACER 881 ifdef CONFIG_FTRACE_MCOUNT_USE_CC !! 759 ifndef CC_FLAGS_FTRACE 882 CC_FLAGS_FTRACE += -mrecord-mcount !! 760 CC_FLAGS_FTRACE := -pg 883 ifdef CONFIG_HAVE_NOP_MCOUNT << 884 ifeq ($(call cc-option-yn, -mnop-mcount),y << 885 CC_FLAGS_FTRACE += -mnop-mcount << 886 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 887 endif << 888 endif << 889 endif 761 endif 890 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL !! 762 ifdef CONFIG_FTRACE_MCOUNT_RECORD 891 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT !! 763 # gcc 5 supports generating the mcount tables directly 892 CC_FLAGS_USING += -DCC_USING_NOP_MCOU !! 764 ifeq ($(call cc-option-yn,-mrecord-mcount),y) 893 endif !! 765 CC_FLAGS_FTRACE += -mrecord-mcount 894 endif !! 766 export CC_USING_RECORD_MCOUNT := 1 895 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT << 896 ifdef CONFIG_HAVE_C_RECORDMCOUNT << 897 BUILD_C_RECORDMCOUNT := y << 898 export BUILD_C_RECORDMCOUNT << 899 endif 767 endif 900 endif 768 endif >> 769 export CC_FLAGS_FTRACE 901 ifdef CONFIG_HAVE_FENTRY 770 ifdef CONFIG_HAVE_FENTRY 902 # s390-linux-gnu-gcc did not support -mfentr !! 771 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) 903 ifeq ($(call cc-option-yn, -mfentry),y) !! 772 endif 904 CC_FLAGS_FTRACE += -mfentry !! 773 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY) 905 CC_FLAGS_USING += -DCC_USING_FENTRY !! 774 KBUILD_AFLAGS += $(CC_USING_FENTRY) 906 endif !! 775 ifdef CONFIG_DYNAMIC_FTRACE >> 776 ifdef CONFIG_HAVE_C_RECORDMCOUNT >> 777 BUILD_C_RECORDMCOUNT := y >> 778 export BUILD_C_RECORDMCOUNT >> 779 endif 907 endif 780 endif 908 export CC_FLAGS_FTRACE << 909 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA << 910 KBUILD_AFLAGS += $(CC_FLAGS_USING) << 911 endif 781 endif 912 782 913 # We trigger additional mismatches with less i 783 # We trigger additional mismatches with less inlining 914 ifdef CONFIG_DEBUG_SECTION_MISMATCH 784 ifdef CONFIG_DEBUG_SECTION_MISMATCH 915 KBUILD_CFLAGS += -fno-inline-functions-called- !! 785 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 916 endif 786 endif 917 787 918 # `rustc`'s `-Zfunction-sections` applies to d !! 788 # arch Makefile may override CC so keep this after arch Makefile is included 919 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION !! 789 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 920 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f !! 790 CHECKFLAGS += $(NOSTDINC_FLAGS) 921 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections << 922 LDFLAGS_vmlinux += --gc-sections << 923 endif << 924 << 925 ifdef CONFIG_SHADOW_CALL_STACK << 926 ifndef CONFIG_DYNAMIC_SCS << 927 CC_FLAGS_SCS := -fsanitize=shadow-call-stac << 928 KBUILD_CFLAGS += $(CC_FLAGS_SCS) << 929 KBUILD_RUSTFLAGS += -Zsanitizer=shadow-call-st << 930 endif << 931 export CC_FLAGS_SCS << 932 endif << 933 << 934 ifdef CONFIG_LTO_CLANG << 935 ifdef CONFIG_LTO_CLANG_THIN << 936 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit << 937 else << 938 CC_FLAGS_LTO := -flto << 939 endif << 940 CC_FLAGS_LTO += -fvisibility=hidden << 941 << 942 # Limit inlining across translation units to r << 943 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 << 944 endif << 945 791 946 ifdef CONFIG_LTO !! 792 # warn about C99 declaration after statement 947 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) !! 793 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 948 KBUILD_AFLAGS += -fno-lto << 949 export CC_FLAGS_LTO << 950 endif << 951 794 952 ifdef CONFIG_CFI_CLANG !! 795 # disable pointer signed / unsigned warnings in gcc 4.0 953 CC_FLAGS_CFI := -fsanitize=kcfi !! 796 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 954 ifdef CONFIG_CFI_ICALL_NORMALIZE_INTEGERS << 955 CC_FLAGS_CFI += -fsanitize-cfi-ical << 956 endif << 957 ifdef CONFIG_RUST << 958 # Always pass -Zsanitizer-cfi-normaliz << 959 # CONFIG_CFI_ICALL_NORMALIZE_INTEGERS. << 960 RUSTC_FLAGS_CFI := -Zsanitizer=kcfi << 961 KBUILD_RUSTFLAGS += $(RUSTC_FLAGS_CFI) << 962 export RUSTC_FLAGS_CFI << 963 endif << 964 KBUILD_CFLAGS += $(CC_FLAGS_CFI) << 965 export CC_FLAGS_CFI << 966 endif << 967 797 968 # Architectures can define flags to add/remove !! 798 # disable stringop warnings in gcc 8+ 969 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN !! 799 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 970 export CC_FLAGS_FPU << 971 export CC_FLAGS_NO_FPU << 972 800 973 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) !! 801 # We'll want to enable this eventually, but it's not going away for 5.7 at least 974 # Set the minimal function alignment. Use the !! 802 KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) 975 # -fmin-function-alignment if it is available, !! 803 KBUILD_CFLAGS += $(call cc-disable-warning, array-bounds) 976 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME !! 804 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) 977 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT << 978 KBUILD_CFLAGS += -fmin-function-alignment=$(CO << 979 else << 980 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU << 981 endif << 982 endif << 983 805 984 # arch Makefile may override CC so keep this a !! 806 # Another good warning that we'll want to enable eventually 985 NOSTDINC_FLAGS += -nostdinc !! 807 KBUILD_CFLAGS += $(call cc-disable-warning, restrict) 986 808 987 # To gain proper coverage for CONFIG_UBSAN_BOU !! 809 # Enabled with W=2, disabled by default as noisy 988 # the kernel uses only C99 flexible arrays for !! 810 KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized) 989 # arrays. Enforce this for everything that may << 990 # perform bounds checking. << 991 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl << 992 << 993 #Currently, disable -Wstringop-overflow for GC << 994 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW << 995 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + << 996 811 997 # disable invalid "can't wrap" optimizations f 812 # disable invalid "can't wrap" optimizations for signed / pointers 998 KBUILD_CFLAGS += -fno-strict-overflow !! 813 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) >> 814 >> 815 # clang sets -fmerge-all-constants by default as optimization, but this >> 816 # is non-conforming behavior for C and in fact breaks the kernel, so we >> 817 # need to disable it here generally. >> 818 KBUILD_CFLAGS += $(call cc-option,-fno-merge-all-constants) >> 819 >> 820 # for gcc -fno-merge-all-constants disables everything, but it is fine >> 821 # to have actual conforming behavior enabled. >> 822 KBUILD_CFLAGS += $(call cc-option,-fmerge-constants) 999 823 1000 # Make sure -fstack-check isn't enabled (like 824 # Make sure -fstack-check isn't enabled (like gentoo apparently did) 1001 KBUILD_CFLAGS += -fno-stack-check !! 825 KBUILD_CFLAGS += $(call cc-option,-fno-stack-check,) 1002 826 1003 # conserve stack if available 827 # conserve stack if available 1004 ifdef CONFIG_CC_IS_GCC !! 828 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 1005 KBUILD_CFLAGS += -fconserve-stack << 1006 endif << 1007 << 1008 # change __FILE__ to the relative path from t << 1009 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p << 1010 829 1011 # include additional Makefiles when needed !! 830 # disallow errors like 'EXPORT_GPL(foo);' with missing header 1012 include-y := scripts/Ma !! 831 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) 1013 include-$(CONFIG_DEBUG_INFO) += scripts/Ma << 1014 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma << 1015 include-$(CONFIG_KASAN) += scripts/Ma << 1016 include-$(CONFIG_KCSAN) += scripts/Ma << 1017 include-$(CONFIG_KMSAN) += scripts/Ma << 1018 include-$(CONFIG_UBSAN) += scripts/Ma << 1019 include-$(CONFIG_KCOV) += scripts/Ma << 1020 include-$(CONFIG_RANDSTRUCT) += scripts/Ma << 1021 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma << 1022 << 1023 include $(addprefix $(srctree)/, $(include-y) << 1024 << 1025 # scripts/Makefile.gcc-plugins is intentional << 1026 # Do not add $(call cc-option,...) below this << 1027 # from the clean source tree, the GCC plugins << 1028 << 1029 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS << 1030 KBUILD_CPPFLAGS += $(KCPPFLAGS) << 1031 KBUILD_AFLAGS += $(KAFLAGS) << 1032 KBUILD_CFLAGS += $(KCFLAGS) << 1033 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) << 1034 << 1035 KBUILD_LDFLAGS_MODULE += --build-id=sha1 << 1036 LDFLAGS_vmlinux += --build-id=sha1 << 1037 << 1038 KBUILD_LDFLAGS += -z noexecstack << 1039 ifeq ($(CONFIG_LD_IS_BFD),y) << 1040 KBUILD_LDFLAGS += $(call ld-option,--no-warn << 1041 endif << 1042 832 1043 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) !! 833 # require functions to have arguments in prototypes, not empty 'int foo()' 1044 LDFLAGS_vmlinux += -X !! 834 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) 1045 endif << 1046 835 1047 ifeq ($(CONFIG_RELR),y) !! 836 # Prohibit date/time macros, which would make the build non-deterministic 1048 # ld.lld before 15 did not support -z pack-re !! 837 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 1049 LDFLAGS_vmlinux += $(call ld-option,--pack-dy !! 838 1050 endif !! 839 # use the deterministic mode of AR if available >> 840 KBUILD_ARFLAGS := $(call ar-option,D) >> 841 >> 842 include scripts/Makefile.kasan >> 843 include scripts/Makefile.extrawarn >> 844 >> 845 # Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the >> 846 # last assignments >> 847 KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) >> 848 KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) >> 849 KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) >> 850 >> 851 # Use --build-id when available. >> 852 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ >> 853 $(call cc-ldoption, -Wl$(comma)--build-id,)) >> 854 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) >> 855 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 1051 856 1052 # We never want expected sections to be place !! 857 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1053 # linker. All sections should be explicitly n !! 858 LDFLAGS_vmlinux += $(call ld-option, -X,) 1054 ifdef CONFIG_LD_ORPHAN_WARN << 1055 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG << 1056 endif 859 endif 1057 860 1058 # Align the bit size of userspace programs wi << 1059 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta << 1060 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta << 1061 << 1062 # make the checker run with the right archite << 1063 CHECKFLAGS += --arch=$(ARCH) << 1064 << 1065 # insure the checker run with the right endia << 1066 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- << 1067 << 1068 # the checker needs the correct machine size << 1069 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) << 1070 << 1071 # Default kernel image to build when no speci 861 # Default kernel image to build when no specific target is given. 1072 # KBUILD_IMAGE may be overruled on the comman 862 # KBUILD_IMAGE may be overruled on the command line or 1073 # set in the environment 863 # set in the environment 1074 # Also any assignments in arch/$(ARCH)/Makefi 864 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 1075 # this default value 865 # this default value 1076 export KBUILD_IMAGE ?= vmlinux 866 export KBUILD_IMAGE ?= vmlinux 1077 867 1078 # 868 # 1079 # INSTALL_PATH specifies where to place the u 869 # INSTALL_PATH specifies where to place the updated kernel and system map 1080 # images. Default is /boot, but you can set i 870 # images. Default is /boot, but you can set it to other values 1081 export INSTALL_PATH ?= /boot 871 export INSTALL_PATH ?= /boot 1082 872 1083 # 873 # 1084 # INSTALL_DTBS_PATH specifies a prefix for re 874 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1085 # Like INSTALL_MOD_PATH, it isn't defined in 875 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1086 # an argument if needed. Otherwise it default 876 # an argument if needed. Otherwise it defaults to the kernel install path 1087 # 877 # 1088 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d 878 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1089 879 1090 # 880 # 1091 # INSTALL_MOD_PATH specifies a prefix to MODL 881 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1092 # relocations required by build roots. This 882 # relocations required by build roots. This is not defined in the 1093 # makefile but the argument can be passed to 883 # makefile but the argument can be passed to make if needed. 1094 # 884 # 1095 885 1096 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 886 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1097 export MODLIB 887 export MODLIB 1098 888 1099 PHONY += prepare0 !! 889 # 1100 !! 890 # INSTALL_MOD_STRIP, if defined, will cause modules to be 1101 export extmod_prefix = $(if $(KBUILD_EXTMOD), !! 891 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 1102 export MODORDER := $(extmod_prefix)modules.or !! 892 # the default option --strip-debug will be used. Otherwise, 1103 export MODULES_NSDEPS := $(extmod_prefix)modu !! 893 # INSTALL_MOD_STRIP value will be used as the options to the strip command. 1104 !! 894 1105 ifeq ($(KBUILD_EXTMOD),) !! 895 ifdef INSTALL_MOD_STRIP >> 896 ifeq ($(INSTALL_MOD_STRIP),1) >> 897 mod_strip_cmd = $(STRIP) --strip-debug >> 898 else >> 899 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) >> 900 endif # INSTALL_MOD_STRIP=1 >> 901 else >> 902 mod_strip_cmd = true >> 903 endif # INSTALL_MOD_STRIP >> 904 export mod_strip_cmd >> 905 >> 906 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed >> 907 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP >> 908 # or CONFIG_MODULE_COMPRESS_XZ. >> 909 >> 910 mod_compress_cmd = true >> 911 ifdef CONFIG_MODULE_COMPRESS >> 912 ifdef CONFIG_MODULE_COMPRESS_GZIP >> 913 mod_compress_cmd = gzip -n -f >> 914 endif # CONFIG_MODULE_COMPRESS_GZIP >> 915 ifdef CONFIG_MODULE_COMPRESS_XZ >> 916 mod_compress_cmd = xz -f >> 917 endif # CONFIG_MODULE_COMPRESS_XZ >> 918 endif # CONFIG_MODULE_COMPRESS >> 919 export mod_compress_cmd >> 920 >> 921 # Select initial ramdisk compression format, default is gzip(1). >> 922 # This shall be used by the dracut(8) tool while creating an initramfs image. >> 923 # >> 924 INITRD_COMPRESS-y := gzip >> 925 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 >> 926 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma >> 927 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz >> 928 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo >> 929 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 >> 930 # do not export INITRD_COMPRESS, since we didn't actually >> 931 # choose a sane default compression above. >> 932 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) 1106 933 1107 build-dir := . !! 934 ifdef CONFIG_MODULE_SIG_ALL 1108 clean-dirs := $(sort . Documentation \ !! 935 $(eval $(call config_filename,MODULE_SIG_KEY)) 1109 $(patsubst %/,%,$(filter << 1110 $(drivers-) $(libs-)) << 1111 << 1112 export ARCH_CORE := $(core-y) << 1113 export ARCH_LIB := $(filter %/, $(lib << 1114 export ARCH_DRIVERS := $(drivers-y) $(dri << 1115 # Externally visible symbols (used by link-vm << 1116 936 1117 KBUILD_VMLINUX_OBJS := ./built-in.a !! 937 mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 1118 ifdef CONFIG_MODULES << 1119 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a << 1120 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib << 1121 else 938 else 1122 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, !! 939 mod_sign_cmd = true 1123 endif 940 endif >> 941 export mod_sign_cmd 1124 942 1125 export KBUILD_VMLINUX_LIBS << 1126 export KBUILD_LDS := arch/$(SRCARCH) << 1127 943 1128 ifdef CONFIG_TRIM_UNUSED_KSYMS !! 944 ifeq ($(KBUILD_EXTMOD),) 1129 # For the kernel to actually contain only the !! 945 core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ 1130 # we have to build modules as well to determi << 1131 KBUILD_MODULES := 1 << 1132 endif << 1133 946 1134 # '$(AR) mPi' needs 'T' to workaround the bug !! 947 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 1135 quiet_cmd_ar_vmlinux.a = AR $@ !! 948 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 1136 cmd_ar_vmlinux.a = \ !! 949 $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) 1137 rm -f $@; \ !! 950 1138 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS !! 951 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 1139 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) !! 952 $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-)))) 1140 !! 953 1141 targets += vmlinux.a !! 954 init-y := $(patsubst %/, %/built-in.o, $(init-y)) 1142 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea !! 955 core-y := $(patsubst %/, %/built-in.o, $(core-y)) 1143 $(call if_changed,ar_vmlinux.a) !! 956 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 1144 !! 957 net-y := $(patsubst %/, %/built-in.o, $(net-y)) 1145 PHONY += vmlinux_o !! 958 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 1146 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) !! 959 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 1147 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 960 libs-y := $(libs-y1) $(libs-y2) >> 961 virt-y := $(patsubst %/, %/built-in.o, $(virt-y)) 1148 962 1149 vmlinux.o modules.builtin.modinfo modules.bui !! 963 # Externally visible symbols (used by link-vmlinux.sh) 1150 @: !! 964 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) 1151 !! 965 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) $(virt-y) 1152 PHONY += vmlinux !! 966 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 1153 # LDFLAGS_vmlinux in the top Makefile defines !! 967 export LDFLAGS_vmlinux 1154 # not for decompressors. LDFLAGS_vmlinux in a !! 968 # used by scripts/pacmage/Makefile 1155 # unrelated; the decompressors just happen to !! 969 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools) 1156 # arch/*/boot/compressed/vmlinux. !! 970 1157 # Export LDFLAGS_vmlinux only to scripts/Make !! 971 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) 1158 # !! 972 1159 # _LDFLAGS_vmlinux is a workaround for the 'p !! 973 # Final link of vmlinux 1160 # https://savannah.gnu.org/bugs/?61463 !! 974 cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) 1161 # For Make > 4.4, the following simple code w !! 975 quiet_cmd_link-vmlinux = LINK $@ 1162 # vmlinux: private export LDFLAGS_vmlinux := !! 976 1163 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG !! 977 # Include targets which we want to 1164 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ !! 978 # execute if the rest of the kernel build went well. 1165 vmlinux: vmlinux.o $(KBUILD_LDS) modpost !! 979 vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE 1166 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 980 ifdef CONFIG_HEADERS_CHECK >> 981 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check >> 982 endif >> 983 ifdef CONFIG_SAMPLES >> 984 $(Q)$(MAKE) $(build)=samples >> 985 endif >> 986 ifdef CONFIG_BUILD_DOCSRC >> 987 $(Q)$(MAKE) $(build)=Documentation >> 988 endif >> 989 ifdef CONFIG_GDB_SCRIPTS >> 990 $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py >> 991 endif >> 992 +$(call if_changed,link-vmlinux) 1167 993 1168 # The actual objects are generated when desce 994 # The actual objects are generated when descending, 1169 # make sure no implicit rule kicks in 995 # make sure no implicit rule kicks in 1170 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 996 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 1171 997 1172 ifeq ($(origin KERNELRELEASE),file) !! 998 # Handle descending into subdirectories listed in $(vmlinux-dirs) 1173 filechk_kernel.release = $(srctree)/scripts/s !! 999 # Preset locale variables to speed up the build process. Limit locale 1174 else !! 1000 # tweaks to this spot to avoid wrong language settings when running 1175 filechk_kernel.release = echo $(KERNELRELEASE !! 1001 # make menuconfig etc. 1176 endif !! 1002 # Error messages still appears in the original language >> 1003 >> 1004 PHONY += $(vmlinux-dirs) >> 1005 $(vmlinux-dirs): prepare scripts >> 1006 $(Q)$(MAKE) $(build)=$@ >> 1007 >> 1008 define filechk_kernel.release >> 1009 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" >> 1010 endef 1177 1011 1178 # Store (new) KERNELRELEASE string in include 1012 # Store (new) KERNELRELEASE string in include/config/kernel.release 1179 include/config/kernel.release: FORCE !! 1013 include/config/kernel.release: include/config/auto.conf FORCE 1180 $(call filechk,kernel.release) 1014 $(call filechk,kernel.release) 1181 1015 1182 # Additional helpers built in scripts/ << 1183 # Carefully list dependencies so we do not tr << 1184 # in parallel << 1185 PHONY += scripts << 1186 scripts: scripts_basic scripts_dtc << 1187 $(Q)$(MAKE) $(build)=$(@) << 1188 1016 1189 # Things we need to do before we recursively 1017 # Things we need to do before we recursively start building the kernel 1190 # or the modules are listed in "prepare". 1018 # or the modules are listed in "prepare". 1191 # A multi level approach is used. prepareN is 1019 # A multi level approach is used. prepareN is processed before prepareN-1. 1192 # archprepare is used in arch Makefiles and w 1020 # archprepare is used in arch Makefiles and when processed asm symlink, 1193 # version.h and scripts_basic is processed / 1021 # version.h and scripts_basic is processed / created. 1194 1022 1195 PHONY += prepare archprepare !! 1023 # Listed in dependency order >> 1024 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 1196 1025 1197 archprepare: outputmakefile archheaders archs !! 1026 # prepare3 is used to check if we are building in a separate output directory, 1198 asm-generic $(version_h) include/gene !! 1027 # and if so do: 1199 include/generated/compile.h include/g !! 1028 # 1) Check that make has not been executed in the kernel src $(srctree) 1200 !! 1029 prepare3: include/config/kernel.release 1201 prepare0: archprepare !! 1030 ifneq ($(KBUILD_SRC),) 1202 $(Q)$(MAKE) $(build)=scripts/mod !! 1031 @$(kecho) ' Using $(srctree) as source for kernel' 1203 $(Q)$(MAKE) $(build)=. prepare !! 1032 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ >> 1033 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ >> 1034 echo >&2 " in the '$(srctree)' directory.";\ >> 1035 /bin/false; \ >> 1036 fi; >> 1037 endif >> 1038 >> 1039 # prepare2 creates a makefile if using a separate output directory >> 1040 prepare2: prepare3 outputmakefile asm-generic >> 1041 >> 1042 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ >> 1043 include/config/auto.conf >> 1044 $(cmd_crmodverdir) 1204 1045 1205 # All the preparing.. !! 1046 archprepare: archheaders archscripts prepare1 scripts_basic 1206 prepare: prepare0 << 1207 ifdef CONFIG_RUST << 1208 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1209 $(Q)$(MAKE) $(build)=rust << 1210 endif << 1211 1047 1212 PHONY += remove-stale-files !! 1048 prepare0: archprepare FORCE 1213 remove-stale-files: !! 1049 $(Q)$(MAKE) $(build)=. 1214 $(Q)$(srctree)/scripts/remove-stale-f << 1215 1050 1216 # Support for using generic headers in asm-ge !! 1051 # All the preparing.. 1217 asm-generic := -f $(srctree)/scripts/Makefile !! 1052 prepare: prepare0 1218 << 1219 PHONY += asm-generic uapi-asm-generic << 1220 asm-generic: uapi-asm-generic << 1221 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC << 1222 generic=include/asm-generic << 1223 uapi-asm-generic: << 1224 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC << 1225 generic=include/uapi/asm-generic << 1226 1053 1227 # Generate some files 1054 # Generate some files 1228 # ------------------------------------------- 1055 # --------------------------------------------------------------------------- 1229 1056 1230 # KERNELRELEASE can change from a few differe 1057 # KERNELRELEASE can change from a few different places, meaning version.h 1231 # needs to be updated, so this check is force 1058 # needs to be updated, so this check is forced on all builds 1232 1059 1233 uts_len := 64 1060 uts_len := 64 1234 define filechk_utsrelease.h 1061 define filechk_utsrelease.h 1235 if [ `echo -n "$(KERNELRELEASE)" | wc 1062 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1236 echo '"$(KERNELRELEASE)" exceeds $( 1063 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1237 exit 1; 1064 exit 1; \ 1238 fi; 1065 fi; \ 1239 echo \#define UTS_RELEASE \"$(KERNELR !! 1066 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1240 endef 1067 endef 1241 1068 1242 define filechk_version.h 1069 define filechk_version.h 1243 if [ $(SUBLEVEL) -gt 255 ]; then !! 1070 (echo \#define LINUX_VERSION_CODE $(shell \ 1244 echo \#define LINUX_VERSION_C !! 1071 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 255); \ 1245 expr $(VERSION) \* 65536 + $( !! 1072 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1246 else << 1247 echo \#define LINUX_VERSION_C << 1248 expr $(VERSION) \* 65536 + $( << 1249 fi; << 1250 echo '#define KERNEL_VERSION(a,b,c) ( << 1251 ((c) > 255 ? 255 : (c)))'; << 1252 echo \#define LINUX_VERSION_MAJOR $(V << 1253 echo \#define LINUX_VERSION_PATCHLEVE << 1254 echo \#define LINUX_VERSION_SUBLEVEL << 1255 endef 1073 endef 1256 1074 1257 $(version_h): private PATCHLEVEL := $(or $(PA !! 1075 $(version_h): $(srctree)/Makefile FORCE 1258 $(version_h): private SUBLEVEL := $(or $(SUBL << 1259 $(version_h): FORCE << 1260 $(call filechk,version.h) 1076 $(call filechk,version.h) >> 1077 $(Q)rm -f $(old_version_h) 1261 1078 1262 include/generated/utsrelease.h: include/confi 1079 include/generated/utsrelease.h: include/config/kernel.release FORCE 1263 $(call filechk,utsrelease.h) 1080 $(call filechk,utsrelease.h) 1264 1081 1265 filechk_compile.h = $(srctree)/scripts/mkcomp << 1266 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION << 1267 << 1268 include/generated/compile.h: FORCE << 1269 $(call filechk,compile.h) << 1270 << 1271 PHONY += headerdep 1082 PHONY += headerdep 1272 headerdep: 1083 headerdep: 1273 $(Q)find $(srctree)/include/ -name '* 1084 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1274 $(srctree)/scripts/headerdep.pl -I$(s 1085 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1275 1086 1276 # ------------------------------------------- 1087 # --------------------------------------------------------------------------- >> 1088 # Firmware install >> 1089 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware >> 1090 export INSTALL_FW_PATH >> 1091 >> 1092 PHONY += firmware_install >> 1093 firmware_install: FORCE >> 1094 @mkdir -p $(objtree)/firmware >> 1095 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install >> 1096 >> 1097 # --------------------------------------------------------------------------- 1277 # Kernel headers 1098 # Kernel headers 1278 1099 1279 #Default location for installed headers 1100 #Default location for installed headers 1280 export INSTALL_HDR_PATH = $(objtree)/usr 1101 export INSTALL_HDR_PATH = $(objtree)/usr 1281 1102 1282 quiet_cmd_headers_install = INSTALL $(INSTALL !! 1103 # If we do an all arch process set dst to asm-$(hdr-arch) 1283 cmd_headers_install = \ !! 1104 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1284 mkdir -p $(INSTALL_HDR_PATH); \ << 1285 rsync -mrl --include='*/' --include=' << 1286 usr/include $(INSTALL_HDR_PATH) << 1287 1105 1288 PHONY += headers_install !! 1106 PHONY += archheaders 1289 headers_install: headers !! 1107 archheaders: 1290 $(call cmd,headers_install) << 1291 1108 1292 PHONY += archheaders archscripts !! 1109 PHONY += archscripts >> 1110 archscripts: 1293 1111 1294 hdr-inst := -f $(srctree)/scripts/Makefile.he !! 1112 PHONY += __headers >> 1113 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE >> 1114 $(Q)$(MAKE) $(build)=scripts build_unifdef >> 1115 >> 1116 PHONY += headers_install_all >> 1117 headers_install_all: >> 1118 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1295 1119 1296 PHONY += headers !! 1120 PHONY += headers_install 1297 headers: $(version_h) scripts_unifdef uapi-as !! 1121 headers_install: __headers 1298 $(if $(filter um, $(SRCARCH)), $(erro !! 1122 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ >> 1123 $(error Headers not exportable for the $(SRCARCH) architecture)) 1299 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1124 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1300 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC !! 1125 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) 1301 << 1302 ifdef CONFIG_HEADERS_INSTALL << 1303 prepare: headers << 1304 endif << 1305 << 1306 PHONY += scripts_unifdef << 1307 scripts_unifdef: scripts_basic << 1308 $(Q)$(MAKE) $(build)=scripts scripts/ << 1309 << 1310 # ------------------------------------------- << 1311 # Install << 1312 << 1313 # Many distributions have the custom install << 1314 # If DKMS is installed, 'make install' will e << 1315 # to this Makefile to build and install exter << 1316 # Cancel sub_make_done so that options such a << 1317 << 1318 quiet_cmd_install = INSTALL $(INSTALL_PATH) << 1319 cmd_install = unset sub_make_done; $(sr << 1320 << 1321 # ------------------------------------------- << 1322 # vDSO install << 1323 << 1324 PHONY += vdso_install << 1325 vdso_install: export INSTALL_FILES = $(vdso-i << 1326 vdso_install: << 1327 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1328 << 1329 # ------------------------------------------- << 1330 # Tools << 1331 << 1332 ifdef CONFIG_OBJTOOL << 1333 prepare: tools/objtool << 1334 endif << 1335 << 1336 ifdef CONFIG_BPF << 1337 ifdef CONFIG_DEBUG_INFO_BTF << 1338 prepare: tools/bpf/resolve_btfids << 1339 endif << 1340 endif << 1341 << 1342 # The tools build system is not a part of Kbu << 1343 # its own unique issues. If you need to integ << 1344 # please consider locating that tool outside << 1345 # standard Kbuild "hostprogs" syntax instead << 1346 # here. See Documentation/kbuild/makefiles.rs << 1347 << 1348 PHONY += resolve_btfids_clean << 1349 << 1350 resolve_btfids_O = $(abspath $(objtree))/tool << 1351 1126 1352 # tools/bpf/resolve_btfids directory might no !! 1127 PHONY += headers_check_all 1353 # in output directory, skip its clean in that !! 1128 headers_check_all: headers_install_all 1354 resolve_btfids_clean: !! 1129 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1355 ifneq ($(wildcard $(resolve_btfids_O)),) !! 1130 1356 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ !! 1131 PHONY += headers_check 1357 endif !! 1132 headers_check: headers_install 1358 !! 1133 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 1359 # Clear a bunch of variables before executing !! 1134 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 1360 ifeq ($(quiet),silent_) << 1361 tools_silent=s << 1362 endif << 1363 << 1364 tools/: FORCE << 1365 $(Q)mkdir -p $(objtree)/tools << 1366 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1367 << 1368 tools/%: FORCE << 1369 $(Q)mkdir -p $(objtree)/tools << 1370 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1371 1135 1372 # ------------------------------------------- 1136 # --------------------------------------------------------------------------- 1373 # Kernel selftest 1137 # Kernel selftest 1374 1138 1375 PHONY += kselftest 1139 PHONY += kselftest 1376 kselftest: headers !! 1140 kselftest: 1377 $(Q)$(MAKE) -C $(srctree)/tools/testi !! 1141 $(Q)$(MAKE) -C tools/testing/selftests run_tests 1378 << 1379 kselftest-%: headers FORCE << 1380 $(Q)$(MAKE) -C $(srctree)/tools/testi << 1381 << 1382 PHONY += kselftest-merge << 1383 kselftest-merge: << 1384 $(if $(wildcard $(objtree)/.config),, << 1385 $(Q)find $(srctree)/tools/testing/sel << 1386 xargs $(srctree)/scripts/kcon << 1387 $(Q)$(MAKE) -f $(srctree)/Makefile ol << 1388 << 1389 # ------------------------------------------- << 1390 # Devicetree files << 1391 << 1392 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ << 1393 dtstree := arch/$(SRCARCH)/boot/dts << 1394 endif << 1395 << 1396 ifneq ($(dtstree),) << 1397 << 1398 %.dtb: dtbs_prepare << 1399 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1400 << 1401 %.dtbo: dtbs_prepare << 1402 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1403 << 1404 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ << 1405 dtbs: dtbs_prepare << 1406 $(Q)$(MAKE) $(build)=$(dtstree) need- << 1407 << 1408 # include/config/kernel.release is actually n << 1409 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) << 1410 # dtbs_install depend on it as dtbs_install m << 1411 dtbs_prepare: include/config/kernel.release s << 1412 << 1413 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), << 1414 export CHECK_DTBS=y << 1415 endif << 1416 << 1417 ifneq ($(CHECK_DTBS),) << 1418 dtbs_prepare: dt_binding_schemas << 1419 endif << 1420 << 1421 dtbs_check: dtbs << 1422 << 1423 dtbs_install: << 1424 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1425 << 1426 ifdef CONFIG_OF_EARLY_FLATTREE << 1427 all: dtbs << 1428 endif << 1429 << 1430 endif << 1431 << 1432 PHONY += scripts_dtc << 1433 scripts_dtc: scripts_basic << 1434 $(Q)$(MAKE) $(build)=scripts/dtc << 1435 1142 1436 ifneq ($(filter dt_binding_check, $(MAKECMDGO !! 1143 kselftest-clean: 1437 export CHECK_DTBS=y !! 1144 $(Q)$(MAKE) -C tools/testing/selftests clean 1438 endif << 1439 << 1440 PHONY += dt_binding_check dt_binding_schemas << 1441 dt_binding_check: dt_binding_schemas scripts_ << 1442 $(Q)$(MAKE) $(build)=Documentation/de << 1443 << 1444 dt_binding_schemas: << 1445 $(Q)$(MAKE) $(build)=Documentation/de << 1446 << 1447 PHONY += dt_compatible_check << 1448 dt_compatible_check: dt_binding_schemas << 1449 $(Q)$(MAKE) $(build)=Documentation/de << 1450 1145 1451 # ------------------------------------------- 1146 # --------------------------------------------------------------------------- 1452 # Modules 1147 # Modules 1453 1148 1454 ifdef CONFIG_MODULES 1149 ifdef CONFIG_MODULES 1455 1150 1456 # By default, build modules as well 1151 # By default, build modules as well 1457 1152 1458 all: modules 1153 all: modules 1459 1154 1460 # When we're building modules with modversion 1155 # When we're building modules with modversions, we need to consider 1461 # the built-in objects during the descend as 1156 # the built-in objects during the descend as well, in order to 1462 # make sure the checksums are up to date befo 1157 # make sure the checksums are up to date before we record them. 1463 ifdef CONFIG_MODVERSIONS 1158 ifdef CONFIG_MODVERSIONS 1464 KBUILD_BUILTIN := 1 1159 KBUILD_BUILTIN := 1 1465 endif 1160 endif 1466 1161 1467 # Build modules 1162 # Build modules 1468 # 1163 # >> 1164 # A module can be listed more than once in obj-m resulting in >> 1165 # duplicate lines in modules.order files. Those are removed >> 1166 # using awk while concatenating to the final file. >> 1167 >> 1168 PHONY += modules >> 1169 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin >> 1170 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order >> 1171 @$(kecho) ' Building modules, stage 2.'; >> 1172 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1173 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1469 1174 1470 # *.ko are usually independent of vmlinux, bu !! 1175 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1471 # is an exception. !! 1176 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1472 ifdef CONFIG_DEBUG_INFO_BTF_MODULES !! 1177 1473 KBUILD_BUILTIN := 1 !! 1178 %/modules.builtin: include/config/auto.conf 1474 modules: vmlinux !! 1179 $(Q)$(MAKE) $(modbuiltin)=$* 1475 endif << 1476 1180 1477 modules: modules_prepare << 1478 1181 1479 # Target to prepare building external modules 1182 # Target to prepare building external modules 1480 modules_prepare: prepare !! 1183 PHONY += modules_prepare 1481 $(Q)$(MAKE) $(build)=scripts scripts/ !! 1184 modules_prepare: prepare scripts >> 1185 >> 1186 # Target to install modules >> 1187 PHONY += modules_install >> 1188 modules_install: _modinst_ _modinst_post >> 1189 >> 1190 PHONY += _modinst_ >> 1191 _modinst_: >> 1192 @rm -rf $(MODLIB)/kernel >> 1193 @rm -f $(MODLIB)/source >> 1194 @mkdir -p $(MODLIB)/kernel >> 1195 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source >> 1196 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ >> 1197 rm -f $(MODLIB)/build ; \ >> 1198 ln -s $(CURDIR) $(MODLIB)/build ; \ >> 1199 fi >> 1200 @cp -f $(objtree)/modules.order $(MODLIB)/ >> 1201 @cp -f $(objtree)/modules.builtin $(MODLIB)/ >> 1202 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1203 >> 1204 # This depmod is only for convenience to give the initial >> 1205 # boot a modules.dep even before / is mounted read-write. However the >> 1206 # boot script depmod is the master version. >> 1207 PHONY += _modinst_post >> 1208 _modinst_post: _modinst_ >> 1209 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst >> 1210 $(call cmd,depmod) >> 1211 >> 1212 ifeq ($(CONFIG_MODULE_SIG), y) >> 1213 PHONY += modules_sign >> 1214 modules_sign: >> 1215 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign >> 1216 endif >> 1217 >> 1218 else # CONFIG_MODULES >> 1219 >> 1220 # Modules not configured >> 1221 # --------------------------------------------------------------------------- >> 1222 >> 1223 modules modules_install: FORCE >> 1224 @echo >&2 >> 1225 @echo >&2 "The present kernel configuration has modules disabled." >> 1226 @echo >&2 "Type 'make config' and enable loadable module support." >> 1227 @echo >&2 "Then build a kernel with module support enabled." >> 1228 @echo >&2 >> 1229 @exit 1 1482 1230 1483 endif # CONFIG_MODULES 1231 endif # CONFIG_MODULES 1484 1232 1485 ### 1233 ### 1486 # Cleaning is done on three levels. 1234 # Cleaning is done on three levels. 1487 # make clean Delete most generated files 1235 # make clean Delete most generated files 1488 # Leave enough to build extern 1236 # Leave enough to build external modules 1489 # make mrproper Delete the current configura 1237 # make mrproper Delete the current configuration, and all generated files 1490 # make distclean Remove editor backup files, 1238 # make distclean Remove editor backup files, patch leftover files and the like 1491 1239 1492 # Directories & files removed with 'make clea 1240 # Directories & files removed with 'make clean' 1493 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1241 CLEAN_DIRS += $(MODVERDIR) 1494 modules.builtin modules.builti << 1495 modules.builtin.ranges vmlinux << 1496 compile_commands.json rust/tes << 1497 rust-project.json .vmlinux.obj << 1498 1242 1499 # Directories & files removed with 'make mrpr 1243 # Directories & files removed with 'make mrproper' 1500 MRPROPER_FILES += include/config include/gene !! 1244 MRPROPER_DIRS += include/config usr/include include/generated \ 1501 arch/$(SRCARCH)/include/gen !! 1245 arch/*/include/generated .tmp_objdiff 1502 debian snap tar-install PKG !! 1246 MRPROPER_FILES += .config .config.old .version .old_version \ 1503 .config .config.old .versio !! 1247 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 1504 Module.symvers \ !! 1248 signing_key.pem signing_key.priv signing_key.x509 \ 1505 certs/signing_key.pem \ !! 1249 x509.genkey extra_certificates signing_key.x509.keyid \ 1506 certs/x509.genkey \ !! 1250 signing_key.x509.signer vmlinux-gdb.py 1507 vmlinux-gdb.py \ << 1508 rpmbuild \ << 1509 rust/libmacros.so << 1510 1251 1511 # clean - Delete most, but leave enough to bu 1252 # clean - Delete most, but leave enough to build external modules 1512 # 1253 # 1513 clean: private rm-files := $(CLEAN_FILES) !! 1254 clean: rm-dirs := $(CLEAN_DIRS) >> 1255 clean: rm-files := $(CLEAN_FILES) >> 1256 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) 1514 1257 1515 PHONY += archclean vmlinuxclean !! 1258 PHONY += $(clean-dirs) clean archclean vmlinuxclean >> 1259 $(clean-dirs): >> 1260 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1516 1261 1517 vmlinuxclean: 1262 vmlinuxclean: 1518 $(Q)$(CONFIG_SHELL) $(srctree)/script 1263 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1519 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f << 1520 1264 1521 clean: archclean vmlinuxclean resolve_btfids_ !! 1265 clean: archclean vmlinuxclean 1522 1266 1523 # mrproper - Delete all generated files, incl 1267 # mrproper - Delete all generated files, including .config 1524 # 1268 # 1525 mrproper: private rm-files := $(MRPROPER_FILE !! 1269 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1526 mrproper-dirs := $(addprefix _mrproper_, !! 1270 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) >> 1271 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1527 1272 1528 PHONY += $(mrproper-dirs) mrproper !! 1273 PHONY += $(mrproper-dirs) mrproper archmrproper 1529 $(mrproper-dirs): 1274 $(mrproper-dirs): 1530 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1275 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1531 1276 1532 mrproper: clean $(mrproper-dirs) !! 1277 mrproper: clean archmrproper $(mrproper-dirs) >> 1278 $(call cmd,rmdirs) 1533 $(call cmd,rmfiles) 1279 $(call cmd,rmfiles) 1534 @find . $(RCS_FIND_IGNORE) \ << 1535 \( -name '*.rmeta' \) \ << 1536 -type f -print | xargs rm -f << 1537 1280 1538 # distclean 1281 # distclean 1539 # 1282 # 1540 PHONY += distclean 1283 PHONY += distclean 1541 1284 1542 distclean: mrproper 1285 distclean: mrproper 1543 @find . $(RCS_FIND_IGNORE) \ !! 1286 @find $(srctree) $(RCS_FIND_IGNORE) \ 1544 \( -name '*.orig' -o -name '* 1287 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1545 -o -name '*.bak' -o -name '#* !! 1288 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1546 -o -name 'core' -o -name tags !! 1289 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \ 1547 -o -name GPATH -o -name GRTAG << 1548 -type f -print | xargs rm -f 1290 -type f -print | xargs rm -f 1549 1291 1550 1292 1551 # Packaging of the kernel to various formats 1293 # Packaging of the kernel to various formats 1552 # ------------------------------------------- 1294 # --------------------------------------------------------------------------- >> 1295 # rpm target kept for backward compatibility >> 1296 package-dir := scripts/package 1553 1297 1554 %src-pkg: FORCE 1298 %src-pkg: FORCE 1555 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1299 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1556 %pkg: include/config/kernel.release FORCE 1300 %pkg: include/config/kernel.release FORCE 1557 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1301 $(Q)$(MAKE) $(build)=$(package-dir) $@ >> 1302 rpm: include/config/kernel.release FORCE >> 1303 $(Q)$(MAKE) $(build)=$(package-dir) $@ >> 1304 1558 1305 1559 # Brief documentation of the typical targets 1306 # Brief documentation of the typical targets used 1560 # ------------------------------------------- 1307 # --------------------------------------------------------------------------- 1561 1308 1562 boards := $(wildcard $(srctree)/arch/$(SRCARC 1309 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1563 boards := $(sort $(notdir $(boards))) 1310 boards := $(sort $(notdir $(boards))) 1564 board-dirs := $(dir $(wildcard $(srctree)/arc 1311 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1565 board-dirs := $(sort $(notdir $(board-dirs:/= 1312 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1566 1313 1567 PHONY += help << 1568 help: 1314 help: 1569 @echo 'Cleaning targets:' 1315 @echo 'Cleaning targets:' 1570 @echo ' clean - Remove mo 1316 @echo ' clean - Remove most generated files but keep the config and' 1571 @echo ' enough bu 1317 @echo ' enough build support to build external modules' 1572 @echo ' mrproper - Remove al 1318 @echo ' mrproper - Remove all generated files + config + various backup files' 1573 @echo ' distclean - mrproper 1319 @echo ' distclean - mrproper + remove editor backup and patch files' 1574 @echo '' 1320 @echo '' >> 1321 @echo 'Configuration targets:' 1575 @$(MAKE) -f $(srctree)/scripts/kconfi 1322 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1576 @echo '' 1323 @echo '' 1577 @echo 'Other generic targets:' 1324 @echo 'Other generic targets:' 1578 @echo ' all - Build all 1325 @echo ' all - Build all targets marked with [*]' 1579 @echo '* vmlinux - Build the 1326 @echo '* vmlinux - Build the bare kernel' 1580 @echo '* modules - Build all 1327 @echo '* modules - Build all modules' 1581 @echo ' modules_install - Install a 1328 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1582 @echo ' vdso_install - Install u !! 1329 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' >> 1330 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1583 @echo ' dir/ - Build all 1331 @echo ' dir/ - Build all files in dir and below' 1584 @echo ' dir/file.[ois] - Build spe 1332 @echo ' dir/file.[ois] - Build specified target only' 1585 @echo ' dir/file.ll - Build the 1333 @echo ' dir/file.ll - Build the LLVM assembly file' 1586 @echo ' (requires 1334 @echo ' (requires compiler support for LLVM assembly generation)' 1587 @echo ' dir/file.lst - Build spe 1335 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1588 @echo ' (requires 1336 @echo ' (requires a recent binutils and recent build (System.map))' 1589 @echo ' dir/file.ko - Build mod 1337 @echo ' dir/file.ko - Build module including final link' 1590 @echo ' modules_prepare - Set up fo 1338 @echo ' modules_prepare - Set up for building external modules' 1591 @echo ' tags/TAGS - Generate 1339 @echo ' tags/TAGS - Generate tags file for editors' 1592 @echo ' cscope - Generate 1340 @echo ' cscope - Generate cscope index' 1593 @echo ' gtags - Generate 1341 @echo ' gtags - Generate GNU GLOBAL index' 1594 @echo ' kernelrelease - Output th 1342 @echo ' kernelrelease - Output the release version string (use with make -s)' 1595 @echo ' kernelversion - Output th 1343 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1596 @echo ' image_name - Output th 1344 @echo ' image_name - Output the image name (use with make -s)' 1597 @echo ' headers_install - Install s 1345 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1598 echo ' (default: 1346 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1599 echo '' 1347 echo '' 1600 @echo 'Static analysers:' !! 1348 @echo 'Static analysers' 1601 @echo ' checkstack - Generate !! 1349 @echo ' checkstack - Generate a list of stack hogs' 1602 @echo ' with a st !! 1350 @echo ' namespacecheck - Name space analysis on compiled kernel' 1603 @echo ' versioncheck - Sanity ch 1351 @echo ' versioncheck - Sanity check on version.h usage' 1604 @echo ' includecheck - Check for 1352 @echo ' includecheck - Check for duplicate included header files' 1605 @echo ' export_report - List the 1353 @echo ' export_report - List the usages of all exported symbols' >> 1354 @echo ' headers_check - Sanity check on exported headers' 1606 @echo ' headerdep - Detect in 1355 @echo ' headerdep - Detect inclusion cycles in headers' 1607 @echo ' coccicheck - Check wit !! 1356 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 1608 @echo ' clang-analyzer - Check wit << 1609 @echo ' clang-tidy - Check wit << 1610 @echo '' << 1611 @echo 'Tools:' << 1612 @echo ' nsdeps - Generate << 1613 @echo '' << 1614 @echo 'Kernel selftest:' << 1615 @echo ' kselftest - Build a << 1616 @echo ' Build, << 1617 @echo ' running << 1618 @echo ' Run as << 1619 @echo ' kselftest-all - Build k << 1620 @echo ' kselftest-install - Build a << 1621 @echo ' kselftest-clean - Remove << 1622 @echo ' kselftest-merge - Merge a << 1623 @echo ' kselfte << 1624 @echo '' 1357 @echo '' 1625 @echo 'Rust targets:' !! 1358 @echo 'Kernel selftest' 1626 @echo ' rustavailable - Checks wh !! 1359 @echo ' kselftest - Build and run kernel selftest (run as root)' 1627 @echo ' available !! 1360 @echo ' Build, install, and boot kernel before' 1628 @echo ' rustfmt - Reformat !! 1361 @echo ' running kselftest on it' 1629 @echo ' rustfmtcheck - Checks if !! 1362 @echo ' kselftest-clean - Remove all generated kselftest files' 1630 @echo ' is format << 1631 @echo ' rustdoc - Generate << 1632 @echo ' (requires << 1633 @echo ' rusttest - Runs the << 1634 @echo ' (requires << 1635 @echo ' rust-analyzer - Generate << 1636 @echo ' (requires << 1637 @echo ' dir/file.[os] - Build spe << 1638 @echo ' dir/file.rsi - Build mac << 1639 @echo ' Run with << 1640 @echo ' The outpu << 1641 @echo ' dir/file.ll - Build the << 1642 @echo '' << 1643 @$(if $(dtstree), \ << 1644 echo 'Devicetree:'; \ << 1645 echo '* dtbs - << 1646 echo ' dtbs_install - << 1647 echo ' dt_binding_check - << 1648 echo ' dt_binding_schemas - << 1649 echo ' dtbs_check - << 1650 echo '') << 1651 << 1652 @echo 'Userspace tools targets:' << 1653 @echo ' use "make tools/help"' << 1654 @echo ' or "cd tools; make help"' << 1655 @echo '' 1363 @echo '' 1656 @echo 'Kernel packaging:' 1364 @echo 'Kernel packaging:' 1657 @$(MAKE) -f $(srctree)/scripts/Makefi !! 1365 @$(MAKE) $(build)=$(package-dir) help 1658 @echo '' 1366 @echo '' 1659 @echo 'Documentation targets:' 1367 @echo 'Documentation targets:' 1660 @$(MAKE) -f $(srctree)/Documentation/ !! 1368 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1661 @echo '' 1369 @echo '' 1662 @echo 'Architecture-specific targets !! 1370 @echo 'Architecture specific targets ($(SRCARCH)):' 1663 @$(or $(archhelp),\ !! 1371 @$(if $(archhelp),$(archhelp),\ 1664 echo ' No architecture-speci !! 1372 echo ' No architecture specific help defined for $(SRCARCH)') 1665 @echo '' 1373 @echo '' 1666 @$(if $(boards), \ 1374 @$(if $(boards), \ 1667 $(foreach b, $(boards), \ 1375 $(foreach b, $(boards), \ 1668 printf " %-27s - Build for % !! 1376 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1669 echo '') 1377 echo '') 1670 @$(if $(board-dirs), \ 1378 @$(if $(board-dirs), \ 1671 $(foreach b, $(board-dirs), \ 1379 $(foreach b, $(board-dirs), \ 1672 printf " %-16s - Show %s-spe 1380 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1673 printf " %-16s - Show all of 1381 printf " %-16s - Show all of the above\\n" help-boards; \ 1674 echo '') 1382 echo '') 1675 1383 1676 @echo ' make V=n [targets] 1: ver !! 1384 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1677 @echo ' 2: giv !! 1385 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1678 @echo ' V=1 an << 1679 @echo ' make O=dir [targets] Locate 1386 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1680 @echo ' make C=1 [targets] Check !! 1387 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1681 @echo ' (spars << 1682 @echo ' make C=2 [targets] Force 1388 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1683 @echo ' make RECORDMCOUNT_WARN=1 [t 1389 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1684 @echo ' make W=n [targets] Enable !! 1390 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1685 @echo ' 1: warnings w 1391 @echo ' 1: warnings which may be relevant and do not occur too often' 1686 @echo ' 2: warnings w 1392 @echo ' 2: warnings which occur quite often but may still be relevant' 1687 @echo ' 3: more obscu 1393 @echo ' 3: more obscure warnings, can most likely be ignored' 1688 @echo ' c: extra chec << 1689 @echo ' e: warnings a << 1690 @echo ' Multiple leve 1394 @echo ' Multiple levels can be combined with W=12 or W=123' 1691 @$(if $(dtstree), \ << 1692 echo ' make CHECK_DTBS=1 [ta << 1693 echo ' This can be ap << 1694 ) << 1695 @echo '' 1395 @echo '' 1696 @echo 'Execute "make" or "make all" 1396 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1697 @echo 'For further info see the ./RE 1397 @echo 'For further info see the ./README file' 1698 1398 1699 1399 1700 help-board-dirs := $(addprefix help-,$(board- 1400 help-board-dirs := $(addprefix help-,$(board-dirs)) 1701 1401 1702 help-boards: $(help-board-dirs) 1402 help-boards: $(help-board-dirs) 1703 1403 1704 boards-per-dir = $(sort $(notdir $(wildcard $ 1404 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1705 1405 1706 $(help-board-dirs): help-%: 1406 $(help-board-dirs): help-%: 1707 @echo 'Architecture-specific targets !! 1407 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1708 @$(if $(boards-per-dir), \ 1408 @$(if $(boards-per-dir), \ 1709 $(foreach b, $(boards-per-dir 1409 $(foreach b, $(boards-per-dir), \ 1710 printf " %-24s - Build for % 1410 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1711 echo '') 1411 echo '') 1712 1412 1713 1413 1714 # Documentation targets 1414 # Documentation targets 1715 # ------------------------------------------- 1415 # --------------------------------------------------------------------------- 1716 DOC_TARGETS := xmldocs latexdocs pdfdocs html !! 1416 %docs: scripts_basic FORCE 1717 linkcheckdocs dochelp refcheck !! 1417 $(Q)$(MAKE) $(build)=scripts build_docproc build_check-lc_ctype 1718 PHONY += $(DOC_TARGETS) !! 1418 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1719 $(DOC_TARGETS): << 1720 $(Q)$(MAKE) $(build)=Documentation $@ << 1721 << 1722 << 1723 # Rust targets << 1724 # ------------------------------------------- << 1725 << 1726 # "Is Rust available?" target << 1727 PHONY += rustavailable << 1728 rustavailable: << 1729 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1730 << 1731 # Documentation target << 1732 # << 1733 # Using the singular to avoid running afoul o << 1734 PHONY += rustdoc << 1735 rustdoc: prepare << 1736 $(Q)$(MAKE) $(build)=rust $@ << 1737 << 1738 # Testing target << 1739 PHONY += rusttest << 1740 rusttest: prepare << 1741 $(Q)$(MAKE) $(build)=rust $@ << 1742 << 1743 # Formatting targets << 1744 PHONY += rustfmt rustfmtcheck << 1745 << 1746 # We skip `rust/alloc` since we want to minim << 1747 # << 1748 # We match using absolute paths since `find` << 1749 # when matching, which is a problem when e.g. << 1750 # We `grep` afterwards in order to remove the << 1751 rustfmt: << 1752 $(Q)find $(abs_srctree) -type f -name << 1753 -o -path $(abs_srctree)/rust/ << 1754 -o -path $(abs_objtree)/rust/ << 1755 | grep -Fv $(abs_srctree)/rus << 1756 | grep -Fv $(abs_objtree)/rus << 1757 | grep -Fv generated \ << 1758 | xargs $(RUSTFMT) $(rustfmt_ << 1759 << 1760 rustfmtcheck: rustfmt_flags = --check << 1761 rustfmtcheck: rustfmt << 1762 << 1763 # Misc << 1764 # ------------------------------------------- << 1765 << 1766 PHONY += misc-check << 1767 misc-check: << 1768 $(Q)$(srctree)/scripts/misc-check << 1769 << 1770 all: misc-check << 1771 << 1772 PHONY += scripts_gdb << 1773 scripts_gdb: prepare0 << 1774 $(Q)$(MAKE) $(build)=scripts/gdb << 1775 $(Q)ln -fsn $(abspath $(srctree)/scri << 1776 << 1777 ifdef CONFIG_GDB_SCRIPTS << 1778 all: scripts_gdb << 1779 endif << 1780 1419 1781 else # KBUILD_EXTMOD 1420 else # KBUILD_EXTMOD 1782 1421 1783 filechk_kernel.release = echo $(KERNELRELEASE << 1784 << 1785 ### 1422 ### 1786 # External module support. 1423 # External module support. 1787 # When building external modules the kernel u 1424 # When building external modules the kernel used as basis is considered 1788 # read-only, and no consistency checks are ma 1425 # read-only, and no consistency checks are made and the make 1789 # system is not used on the basis kernel. If 1426 # system is not used on the basis kernel. If updates are required 1790 # in the basis kernel ordinary make commands !! 1427 # in the basis kernel ordinary make commands (without M=...) must >> 1428 # be used. >> 1429 # >> 1430 # The following are the only valid targets when building external >> 1431 # modules. >> 1432 # make M=dir clean Delete all automatically generated files >> 1433 # make M=dir modules Make all modules in specified dir >> 1434 # make M=dir Same as 'make M=dir modules' >> 1435 # make M=dir modules_install >> 1436 # Install the modules built in the module directory >> 1437 # Assumes install directory is already created 1791 1438 1792 # We are always building only modules. !! 1439 # We are always building modules 1793 KBUILD_BUILTIN := << 1794 KBUILD_MODULES := 1 1440 KBUILD_MODULES := 1 1795 1441 1796 build-dir := $(KBUILD_EXTMOD) !! 1442 PHONY += $(objtree)/Module.symvers >> 1443 $(objtree)/Module.symvers: >> 1444 @test -e $(objtree)/Module.symvers || ( \ >> 1445 echo; \ >> 1446 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ >> 1447 echo " is missing; modules will have no dependencies and modversions."; \ >> 1448 echo ) >> 1449 >> 1450 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) >> 1451 PHONY += $(module-dirs) modules >> 1452 $(module-dirs): prepare $(objtree)/Module.symvers >> 1453 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) >> 1454 >> 1455 modules: $(module-dirs) >> 1456 @$(kecho) ' Building modules, stage 2.'; >> 1457 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1797 1458 1798 compile_commands.json: $(extmod_prefix)compil !! 1459 PHONY += modules_install 1799 PHONY += compile_commands.json !! 1460 modules_install: _emodinst_ _emodinst_post 1800 1461 1801 clean-dirs := $(KBUILD_EXTMOD) !! 1462 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1802 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1463 PHONY += _emodinst_ 1803 $(KBUILD_EXTMOD)/compile_commands.jso !! 1464 _emodinst_: 1804 !! 1465 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1805 PHONY += prepare !! 1466 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1806 # now expand this into a simple variable to r !! 1467 1807 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT !! 1468 PHONY += _emodinst_post 1808 prepare: !! 1469 _emodinst_post: _emodinst_ 1809 @if [ "$(CC_VERSION_TEXT)" != "$(CONF !! 1470 $(call cmd,depmod) 1810 echo >&2 "warning: the compil !! 1471 1811 echo >&2 " The kernel was bu !! 1472 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1812 echo >&2 " You are using: !! 1473 1813 fi !! 1474 PHONY += $(clean-dirs) clean >> 1475 $(clean-dirs): >> 1476 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) >> 1477 >> 1478 clean: rm-dirs := $(MODVERDIR) >> 1479 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1814 1480 1815 PHONY += help << 1816 help: 1481 help: 1817 @echo ' Building external modules.' 1482 @echo ' Building external modules.' 1818 @echo ' Syntax: make -C path/to/ker 1483 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1819 @echo '' 1484 @echo '' 1820 @echo ' modules - default t 1485 @echo ' modules - default target, build the module(s)' 1821 @echo ' modules_install - install t 1486 @echo ' modules_install - install the module' 1822 @echo ' clean - remove ge 1487 @echo ' clean - remove generated files in module directory only' 1823 @echo ' rust-analyzer - generate << 1824 @echo '' 1488 @echo '' 1825 1489 1826 ifndef CONFIG_MODULES !! 1490 # Dummies... 1827 modules modules_install: __external_modules_e !! 1491 PHONY += prepare scripts 1828 __external_modules_error: !! 1492 prepare: 1829 @echo >&2 '***' !! 1493 $(cmd_crmodverdir) 1830 @echo >&2 '*** The present kernel dis !! 1494 scripts: ; 1831 @echo >&2 '*** You cannot build or in << 1832 @echo >&2 '***' << 1833 @false << 1834 endif << 1835 << 1836 endif # KBUILD_EXTMOD 1495 endif # KBUILD_EXTMOD 1837 1496 1838 # ------------------------------------------- << 1839 # Modules << 1840 << 1841 PHONY += modules modules_install modules_sign << 1842 << 1843 modules_install: << 1844 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1845 sign-only=$(if $(filter modules_insta << 1846 << 1847 ifeq ($(CONFIG_MODULE_SIG),y) << 1848 # modules_sign is a subset of modules_install << 1849 # 'make modules_install modules_sign' is equi << 1850 modules_sign: modules_install << 1851 @: << 1852 else << 1853 modules_sign: << 1854 @echo >&2 '***' << 1855 @echo >&2 '*** CONFIG_MODULE_SIG is d << 1856 @echo >&2 '***' << 1857 @false << 1858 endif << 1859 << 1860 ifdef CONFIG_MODULES << 1861 << 1862 $(MODORDER): $(build-dir) << 1863 @: << 1864 << 1865 # KBUILD_MODPOST_NOFINAL can be set to skip t << 1866 # This is solely useful to speed up test comp << 1867 modules: modpost << 1868 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1869 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1870 endif << 1871 << 1872 PHONY += modules_check << 1873 modules_check: $(MODORDER) << 1874 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1875 << 1876 else # CONFIG_MODULES << 1877 << 1878 modules: << 1879 @: << 1880 << 1881 KBUILD_MODULES := << 1882 << 1883 endif # CONFIG_MODULES << 1884 << 1885 PHONY += modpost << 1886 modpost: $(if $(single-build),, $(if $(KBUILD << 1887 $(if $(KBUILD_MODULES), modules_chec << 1888 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1889 << 1890 # Single targets << 1891 # ------------------------------------------- << 1892 # To build individual files in subdirectories << 1893 # << 1894 # make foo/bar/baz.s << 1895 # << 1896 # The supported suffixes for single-target ar << 1897 # << 1898 # To build only under specific subdirectories << 1899 # << 1900 # make foo/bar/baz/ << 1901 << 1902 ifdef single-build << 1903 << 1904 # .ko is special because modpost is needed << 1905 single-ko := $(sort $(filter %.ko, $(MAKECMDG << 1906 single-no-ko := $(filter-out $(single-ko), $( << 1907 $(foreach x, o mod, $(patsubs << 1908 << 1909 $(single-ko): single_modules << 1910 @: << 1911 $(single-no-ko): $(build-dir) << 1912 @: << 1913 << 1914 # Remove MODORDER when done because it is not << 1915 PHONY += single_modules << 1916 single_modules: $(single-no-ko) modules_prepa << 1917 $(Q){ $(foreach m, $(single-ko), echo << 1918 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1919 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1920 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1921 endif << 1922 $(Q)rm -f $(MODORDER) << 1923 << 1924 single-goals := $(addprefix $(build-dir)/, $( << 1925 << 1926 KBUILD_MODULES := 1 << 1927 << 1928 endif << 1929 << 1930 # Preset locale variables to speed up the bui << 1931 # tweaks to this spot to avoid wrong language << 1932 # make menuconfig etc. << 1933 # Error messages still appears in the origina << 1934 PHONY += $(build-dir) << 1935 $(build-dir): prepare << 1936 $(Q)$(MAKE) $(build)=$@ need-builtin= << 1937 << 1938 clean-dirs := $(addprefix _clean_, $(clean-di << 1939 PHONY += $(clean-dirs) clean << 1940 $(clean-dirs): << 1941 $(Q)$(MAKE) $(clean)=$(patsubst _clea << 1942 << 1943 clean: $(clean-dirs) 1497 clean: $(clean-dirs) >> 1498 $(call cmd,rmdirs) 1944 $(call cmd,rmfiles) 1499 $(call cmd,rmfiles) 1945 @find $(or $(KBUILD_EXTMOD), .) $(RCS !! 1500 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1946 \( -name '*.[aios]' -o -name !! 1501 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1947 -o -name '*.ko.*' \ 1502 -o -name '*.ko.*' \ 1948 -o -name '*.dtb' -o -name '*. !! 1503 -o -name '*.dwo' \ 1949 -o -name '*.dtb.S' -o -name ' !! 1504 -o -name '*.su' \ 1950 -o -name '*.dt.yaml' -o -name << 1951 -o -name '*.dwo' -o -name '*. << 1952 -o -name '*.su' -o -name '*.m << 1953 -o -name '.*.d' -o -name '.*. 1505 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1954 -o -name '*.lex.c' -o -name ' << 1955 -o -name '*.asn1.[ch]' \ << 1956 -o -name '*.symtypes' -o -nam 1506 -o -name '*.symtypes' -o -name 'modules.order' \ 1957 -o -name '*.c.[012]*.*' \ !! 1507 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1958 -o -name '*.ll' \ 1508 -o -name '*.ll' \ 1959 -o -name '*.gcno' \ !! 1509 -o -name '*.gcno' \) -type f -print | xargs rm -f 1960 \) -type f -print \ << 1961 -o -name '.tmp_*' -print \ << 1962 | xargs rm -rf << 1963 1510 1964 # Generate tags for editors 1511 # Generate tags for editors 1965 # ------------------------------------------- 1512 # --------------------------------------------------------------------------- 1966 quiet_cmd_tags = GEN $@ 1513 quiet_cmd_tags = GEN $@ 1967 cmd_tags = $(BASH) $(srctree)/scripts/t !! 1514 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1968 1515 1969 tags TAGS cscope gtags: FORCE 1516 tags TAGS cscope gtags: FORCE 1970 $(call cmd,tags) 1517 $(call cmd,tags) 1971 1518 1972 # Generate rust-project.json (a file that des << 1973 # Rust projects) for rust-analyzer (an implem << 1974 # Protocol). << 1975 PHONY += rust-analyzer << 1976 rust-analyzer: << 1977 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1978 $(Q)$(MAKE) $(build)=rust $@ << 1979 << 1980 # Script to generate missing namespace depend << 1981 # ------------------------------------------- << 1982 << 1983 PHONY += nsdeps << 1984 nsdeps: export KBUILD_NSDEPS=1 << 1985 nsdeps: modules << 1986 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1987 << 1988 # Clang Tooling << 1989 # ------------------------------------------- << 1990 << 1991 quiet_cmd_gen_compile_commands = GEN $@ << 1992 cmd_gen_compile_commands = $(PYTHON3) $ << 1993 << 1994 $(extmod_prefix)compile_commands.json: $(srct << 1995 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K << 1996 $(if $(CONFIG_MODULES), $(MODORDER)) << 1997 $(call if_changed,gen_compile_command << 1998 << 1999 targets += $(extmod_prefix)compile_commands.j << 2000 << 2001 PHONY += clang-tidy clang-analyzer << 2002 << 2003 ifdef CONFIG_CC_IS_CLANG << 2004 quiet_cmd_clang_tools = CHECK $< << 2005 cmd_clang_tools = $(PYTHON3) $(srctree) << 2006 << 2007 clang-tidy clang-analyzer: $(extmod_prefix)co << 2008 $(call cmd,clang_tools) << 2009 else << 2010 clang-tidy clang-analyzer: << 2011 @echo "$@ requires CC=clang" >&2 << 2012 @false << 2013 endif << 2014 << 2015 # Scripts to check various things for consist 1519 # Scripts to check various things for consistency 2016 # ------------------------------------------- 1520 # --------------------------------------------------------------------------- 2017 1521 2018 PHONY += includecheck versioncheck coccicheck !! 1522 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 2019 1523 2020 includecheck: 1524 includecheck: 2021 find $(srctree)/* $(RCS_FIND_IGNORE) 1525 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2022 -name '*.[hcS]' -type f -prin 1526 -name '*.[hcS]' -type f -print | sort \ 2023 | xargs $(PERL) -w $(srctree) 1527 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 2024 1528 2025 versioncheck: 1529 versioncheck: 2026 find $(srctree)/* $(RCS_FIND_IGNORE) 1530 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2027 -name '*.[hcS]' -type f -prin 1531 -name '*.[hcS]' -type f -print | sort \ 2028 | xargs $(PERL) -w $(srctree) 1532 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 2029 1533 2030 coccicheck: 1534 coccicheck: 2031 $(Q)$(BASH) $(srctree)/scripts/$@ !! 1535 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ >> 1536 >> 1537 namespacecheck: >> 1538 $(PERL) $(srctree)/scripts/namespace.pl 2032 1539 2033 export_report: 1540 export_report: 2034 $(PERL) $(srctree)/scripts/export_rep 1541 $(PERL) $(srctree)/scripts/export_report.pl 2035 1542 >> 1543 endif #ifeq ($(config-targets),1) >> 1544 endif #ifeq ($(mixed-targets),1) >> 1545 2036 PHONY += checkstack kernelrelease kernelversi 1546 PHONY += checkstack kernelrelease kernelversion image_name 2037 1547 2038 # UML needs a little special treatment here. 1548 # UML needs a little special treatment here. It wants to use the host 2039 # toolchain, so needs $(SUBARCH) passed to ch 1549 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 2040 # else wants $(ARCH), including people doing 1550 # else wants $(ARCH), including people doing cross-builds, which means 2041 # that $(SUBARCH) doesn't work here. 1551 # that $(SUBARCH) doesn't work here. 2042 ifeq ($(ARCH), um) 1552 ifeq ($(ARCH), um) 2043 CHECKSTACK_ARCH := $(SUBARCH) 1553 CHECKSTACK_ARCH := $(SUBARCH) 2044 else 1554 else 2045 CHECKSTACK_ARCH := $(ARCH) 1555 CHECKSTACK_ARCH := $(ARCH) 2046 endif 1556 endif 2047 MINSTACKSIZE ?= 100 << 2048 checkstack: 1557 checkstack: 2049 $(OBJDUMP) -d vmlinux $$(find . -name 1558 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 2050 $(PERL) $(srctree)/scripts/checkstack !! 1559 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 2051 1560 2052 kernelrelease: 1561 kernelrelease: 2053 @$(filechk_kernel.release) !! 1562 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 2054 1563 2055 kernelversion: 1564 kernelversion: 2056 @echo $(KERNELVERSION) 1565 @echo $(KERNELVERSION) 2057 1566 2058 image_name: 1567 image_name: 2059 @echo $(KBUILD_IMAGE) 1568 @echo $(KBUILD_IMAGE) 2060 1569 2061 PHONY += run-command !! 1570 # Clear a bunch of variables before executing the submake 2062 run-command: !! 1571 tools/: FORCE 2063 $(Q)$(KBUILD_RUN_COMMAND) !! 1572 $(Q)mkdir -p $(objtree)/tools >> 1573 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ >> 1574 >> 1575 tools/%: FORCE >> 1576 $(Q)mkdir -p $(objtree)/tools >> 1577 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ $* >> 1578 >> 1579 # Single targets >> 1580 # --------------------------------------------------------------------------- >> 1581 # Single targets are compatible with: >> 1582 # - build with mixed source and output >> 1583 # - build with separate output dir 'make O=...' >> 1584 # - external modules >> 1585 # >> 1586 # target-dir => where to store outputfile >> 1587 # build-dir => directory in kernel source tree to use >> 1588 >> 1589 ifeq ($(KBUILD_EXTMOD),) >> 1590 build-dir = $(patsubst %/,%,$(dir $@)) >> 1591 target-dir = $(dir $@) >> 1592 else >> 1593 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) >> 1594 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) >> 1595 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) >> 1596 endif >> 1597 >> 1598 %.s: %.c prepare scripts FORCE >> 1599 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1600 %.i: %.c prepare scripts FORCE >> 1601 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1602 %.o: %.c prepare scripts FORCE >> 1603 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1604 %.lst: %.c prepare scripts FORCE >> 1605 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1606 %.s: %.S prepare scripts FORCE >> 1607 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1608 %.o: %.S prepare scripts FORCE >> 1609 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1610 %.symtypes: %.c prepare scripts FORCE >> 1611 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1612 %.ll: %.c prepare scripts FORCE >> 1613 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1614 >> 1615 # Modules >> 1616 /: prepare scripts FORCE >> 1617 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1618 $(build)=$(build-dir) >> 1619 # Make sure the latest headers are built for Documentation >> 1620 Documentation/: headers_install >> 1621 %/: prepare scripts FORCE >> 1622 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1623 $(build)=$(build-dir) >> 1624 %.ko: prepare scripts FORCE >> 1625 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1626 $(build)=$(build-dir) $(@:.ko=.o) >> 1627 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1628 >> 1629 # FIXME Should go into a make.lib or something >> 1630 # =========================================================================== >> 1631 >> 1632 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) >> 1633 cmd_rmdirs = rm -rf $(rm-dirs) 2064 1634 2065 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 1635 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2066 cmd_rmfiles = rm -rf $(rm-files) !! 1636 cmd_rmfiles = rm -f $(rm-files) 2067 1637 2068 # read saved command lines for existing targe !! 1638 # Run depmod only if we have System.map and depmod is executable 2069 existing-targets := $(wildcard $(sort $(targe !! 1639 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) >> 1640 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ >> 1641 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" 2070 1642 2071 -include $(foreach f,$(existing-targets),$(di !! 1643 # Create temporary dir for module support files >> 1644 # clean it up only when building all modules >> 1645 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ >> 1646 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) >> 1647 >> 1648 # read all saved command lines >> 1649 >> 1650 targets := $(wildcard $(sort $(targets))) >> 1651 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) >> 1652 >> 1653 ifneq ($(cmd_files),) >> 1654 $(cmd_files): ; # Do not try to update included dependency files >> 1655 include $(cmd_files) >> 1656 endif 2072 1657 2073 endif # config-build !! 1658 endif # skip-makefile 2074 endif # mixed-build << 2075 endif # need-sub-make << 2076 1659 2077 PHONY += FORCE 1660 PHONY += FORCE 2078 FORCE: 1661 FORCE: 2079 1662 2080 # Declare the contents of the PHONY variable !! 1663 # Declare the contents of the .PHONY variable as phony. We keep that 2081 # information in a variable so we can use it 1664 # information in a variable so we can use it in if_changed and friends. 2082 .PHONY: $(PHONY) 1665 .PHONY: $(PHONY)
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.