1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0 2 VERSION = 6 2 VERSION = 6 3 PATCHLEVEL = 12 !! 3 PATCHLEVEL = 3 4 SUBLEVEL = 0 !! 4 SUBLEVEL = 13 5 EXTRAVERSION = -rc7 !! 5 EXTRAVERSION = 6 NAME = Baby Opossum Posse !! 6 NAME = Hurr durr I'ma ninja sloth 7 7 8 # *DOCUMENTATION* 8 # *DOCUMENTATION* 9 # To see a list of typical targets execute "ma 9 # To see a list of typical targets execute "make help" 10 # More info can be located in ./README 10 # More info can be located in ./README 11 # Comments in this file are targeted only to t 11 # Comments in this file are targeted only to the developer, do not 12 # expect to learn how to build the kernel read 12 # expect to learn how to build the kernel reading this file. 13 13 14 ifeq ($(filter output-sync,$(.FEATURES)),) !! 14 ifeq ($(filter undefine,$(.FEATURES)),) 15 $(error GNU Make >= 4.0 is required. Your Make !! 15 $(error GNU Make >= 3.82 is required. Your Make version is $(MAKE_VERSION)) 16 endif 16 endif 17 17 18 $(if $(filter __%, $(MAKECMDGOALS)), \ 18 $(if $(filter __%, $(MAKECMDGOALS)), \ 19 $(error targets prefixed with '__' are 19 $(error targets prefixed with '__' are only for internal use)) 20 20 21 # That's our default target when none is given 21 # That's our default target when none is given on the command line 22 PHONY := __all 22 PHONY := __all 23 __all: 23 __all: 24 24 25 # We are using a recursive build, so we need t 25 # We are using a recursive build, so we need to do a little thinking 26 # to get the ordering right. 26 # to get the ordering right. 27 # 27 # 28 # Most importantly: sub-Makefiles should only 28 # Most importantly: sub-Makefiles should only ever modify files in 29 # their own directory. If in some directory we 29 # their own directory. If in some directory we have a dependency on 30 # a file in another dir (which doesn't happen 30 # a file in another dir (which doesn't happen often, but it's often 31 # unavoidable when linking the built-in.a targ 31 # unavoidable when linking the built-in.a targets which finally 32 # turn into vmlinux), we will call a sub make 32 # turn into vmlinux), we will call a sub make in that other dir, and 33 # after that we are sure that everything which 33 # after that we are sure that everything which is in that other dir 34 # is now up to date. 34 # is now up to date. 35 # 35 # 36 # The only cases where we need to modify files 36 # The only cases where we need to modify files which have global 37 # effects are thus separated out and done befo 37 # effects are thus separated out and done before the recursive 38 # descending is started. They are now explicit 38 # descending is started. They are now explicitly listed as the 39 # prepare rule. 39 # prepare rule. 40 40 41 this-makefile := $(lastword $(MAKEFILE_LIST)) << 42 abs_srctree := $(realpath $(dir $(this-makefil << 43 abs_objtree := $(CURDIR) << 44 << 45 ifneq ($(sub_make_done),1) 41 ifneq ($(sub_make_done),1) 46 42 47 # Do not use make's built-in rules and variabl 43 # Do not use make's built-in rules and variables 48 # (this increases performance and avoids hard- 44 # (this increases performance and avoids hard-to-debug behaviour) 49 MAKEFLAGS += -rR 45 MAKEFLAGS += -rR 50 46 51 # Avoid funny character set dependencies 47 # Avoid funny character set dependencies 52 unexport LC_ALL 48 unexport LC_ALL 53 LC_COLLATE=C 49 LC_COLLATE=C 54 LC_NUMERIC=C 50 LC_NUMERIC=C 55 export LC_COLLATE LC_NUMERIC 51 export LC_COLLATE LC_NUMERIC 56 52 57 # Avoid interference with shell env settings 53 # Avoid interference with shell env settings 58 unexport GREP_OPTIONS 54 unexport GREP_OPTIONS 59 55 60 # Beautify output 56 # Beautify output 61 # -------------------------------------------- 57 # --------------------------------------------------------------------------- 62 # 58 # 63 # Most of build commands in Kbuild start with 59 # Most of build commands in Kbuild start with "cmd_". You can optionally define 64 # "quiet_cmd_*". If defined, the short log is 60 # "quiet_cmd_*". If defined, the short log is printed. Otherwise, no log from 65 # that command is printed by default. 61 # that command is printed by default. 66 # 62 # 67 # e.g.) 63 # e.g.) 68 # quiet_cmd_depmod = DEPMOD $(MODLIB) 64 # quiet_cmd_depmod = DEPMOD $(MODLIB) 69 # cmd_depmod = $(srctree)/scripts/dep 65 # cmd_depmod = $(srctree)/scripts/depmod.sh $(DEPMOD) $(KERNELRELEASE) 70 # 66 # 71 # A simple variant is to prefix commands with 67 # A simple variant is to prefix commands with $(Q) - that's useful 72 # for commands that shall be hidden in non-ver 68 # for commands that shall be hidden in non-verbose mode. 73 # 69 # 74 # $(Q)$(MAKE) $(build)=scripts/basic 70 # $(Q)$(MAKE) $(build)=scripts/basic 75 # 71 # 76 # If KBUILD_VERBOSE contains 1, the whole comm 72 # If KBUILD_VERBOSE contains 1, the whole command is echoed. 77 # If KBUILD_VERBOSE contains 2, the reason for 73 # If KBUILD_VERBOSE contains 2, the reason for rebuilding is printed. 78 # 74 # 79 # To put more focus on warnings, be less verbo 75 # To put more focus on warnings, be less verbose as default 80 # Use 'make V=1' to see the full commands 76 # Use 'make V=1' to see the full commands 81 77 82 ifeq ("$(origin V)", "command line") 78 ifeq ("$(origin V)", "command line") 83 KBUILD_VERBOSE = $(V) 79 KBUILD_VERBOSE = $(V) 84 endif 80 endif 85 81 86 quiet = quiet_ 82 quiet = quiet_ 87 Q = @ 83 Q = @ 88 84 89 ifneq ($(findstring 1, $(KBUILD_VERBOSE)),) 85 ifneq ($(findstring 1, $(KBUILD_VERBOSE)),) 90 quiet = 86 quiet = 91 Q = 87 Q = 92 endif 88 endif 93 89 94 # If the user is running make -s (silent mode) 90 # If the user is running make -s (silent mode), suppress echoing of 95 # commands 91 # commands 96 ifneq ($(findstring s,$(firstword -$(MAKEFLAGS !! 92 # make-4.0 (and later) keep single letter options in the 1st word of MAKEFLAGS. >> 93 >> 94 ifeq ($(filter 3.%,$(MAKE_VERSION)),) >> 95 short-opts := $(firstword -$(MAKEFLAGS)) >> 96 else >> 97 short-opts := $(filter-out --%,$(MAKEFLAGS)) >> 98 endif >> 99 >> 100 ifneq ($(findstring s,$(short-opts)),) 97 quiet=silent_ 101 quiet=silent_ 98 override KBUILD_VERBOSE := 102 override KBUILD_VERBOSE := 99 endif 103 endif 100 104 101 export quiet Q KBUILD_VERBOSE 105 export quiet Q KBUILD_VERBOSE 102 106 103 # Call a source code checker (by default, "spa 107 # Call a source code checker (by default, "sparse") as part of the 104 # C compilation. 108 # C compilation. 105 # 109 # 106 # Use 'make C=1' to enable checking of only re 110 # Use 'make C=1' to enable checking of only re-compiled files. 107 # Use 'make C=2' to enable checking of *all* s 111 # Use 'make C=2' to enable checking of *all* source files, regardless 108 # of whether they are re-compiled or not. 112 # of whether they are re-compiled or not. 109 # 113 # 110 # See the file "Documentation/dev-tools/sparse 114 # See the file "Documentation/dev-tools/sparse.rst" for more details, 111 # including where to get the "sparse" utility. 115 # including where to get the "sparse" utility. 112 116 113 ifeq ("$(origin C)", "command line") 117 ifeq ("$(origin C)", "command line") 114 KBUILD_CHECKSRC = $(C) 118 KBUILD_CHECKSRC = $(C) 115 endif 119 endif 116 ifndef KBUILD_CHECKSRC 120 ifndef KBUILD_CHECKSRC 117 KBUILD_CHECKSRC = 0 121 KBUILD_CHECKSRC = 0 118 endif 122 endif 119 123 120 export KBUILD_CHECKSRC 124 export KBUILD_CHECKSRC 121 125 122 # Enable "clippy" (a linter) as part of the Ru 126 # Enable "clippy" (a linter) as part of the Rust compilation. 123 # 127 # 124 # Use 'make CLIPPY=1' to enable it. 128 # Use 'make CLIPPY=1' to enable it. 125 ifeq ("$(origin CLIPPY)", "command line") 129 ifeq ("$(origin CLIPPY)", "command line") 126 KBUILD_CLIPPY := $(CLIPPY) 130 KBUILD_CLIPPY := $(CLIPPY) 127 endif 131 endif 128 132 129 export KBUILD_CLIPPY 133 export KBUILD_CLIPPY 130 134 131 # Use make M=dir or set the environment variab 135 # Use make M=dir or set the environment variable KBUILD_EXTMOD to specify the 132 # directory of external module to build. Setti 136 # directory of external module to build. Setting M= takes precedence. 133 ifeq ("$(origin M)", "command line") 137 ifeq ("$(origin M)", "command line") 134 KBUILD_EXTMOD := $(M) 138 KBUILD_EXTMOD := $(M) 135 endif 139 endif 136 140 137 $(if $(word 2, $(KBUILD_EXTMOD)), \ 141 $(if $(word 2, $(KBUILD_EXTMOD)), \ 138 $(error building multiple external mod 142 $(error building multiple external modules is not supported)) 139 143 140 $(foreach x, % :, $(if $(findstring $x, $(KBUI 144 $(foreach x, % :, $(if $(findstring $x, $(KBUILD_EXTMOD)), \ 141 $(error module directory path cannot c 145 $(error module directory path cannot contain '$x'))) 142 146 143 # Remove trailing slashes 147 # Remove trailing slashes 144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) 148 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) 145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM 149 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTMOD).) 146 endif 150 endif 147 151 148 export KBUILD_EXTMOD 152 export KBUILD_EXTMOD 149 153 150 # backward compatibility << 151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC << 152 << 153 ifeq ("$(origin W)", "command line") << 154 KBUILD_EXTRA_WARN := $(W) << 155 endif << 156 << 157 export KBUILD_EXTRA_WARN << 158 << 159 # Kbuild will save output files in the current 154 # Kbuild will save output files in the current working directory. 160 # This does not need to match to the root of t 155 # This does not need to match to the root of the kernel source tree. 161 # 156 # 162 # For example, you can do this: 157 # For example, you can do this: 163 # 158 # 164 # cd /dir/to/store/output/files; make -f /dir 159 # cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile 165 # 160 # 166 # If you want to save output files in a differ 161 # If you want to save output files in a different location, there are 167 # two syntaxes to specify it. 162 # two syntaxes to specify it. 168 # 163 # 169 # 1) O= 164 # 1) O= 170 # Use "make O=dir/to/store/output/files/" 165 # Use "make O=dir/to/store/output/files/" 171 # 166 # 172 # 2) Set KBUILD_OUTPUT 167 # 2) Set KBUILD_OUTPUT 173 # Set the environment variable KBUILD_OUTPUT t 168 # Set the environment variable KBUILD_OUTPUT to point to the output directory. 174 # export KBUILD_OUTPUT=dir/to/store/output/fil 169 # export KBUILD_OUTPUT=dir/to/store/output/files/; make 175 # 170 # 176 # The O= assignment takes precedence over the 171 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 177 # variable. 172 # variable. 178 173 179 # Do we want to change the working directory? 174 # Do we want to change the working directory? 180 ifeq ("$(origin O)", "command line") 175 ifeq ("$(origin O)", "command line") 181 KBUILD_OUTPUT := $(O) 176 KBUILD_OUTPUT := $(O) 182 endif 177 endif 183 178 184 ifneq ($(KBUILD_OUTPUT),) 179 ifneq ($(KBUILD_OUTPUT),) 185 # $(realpath ...) gets empty if the path does !! 180 # Make's built-in functions such as $(abspath ...), $(realpath ...) cannot 186 $(shell mkdir -p "$(KBUILD_OUTPUT)") !! 181 # expand a shell special character '~'. We use a somewhat tedious way here. >> 182 abs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) >> 183 $(if $(abs_objtree),, \ >> 184 $(error failed to create output directory "$(KBUILD_OUTPUT)")) >> 185 187 # $(realpath ...) resolves symlinks 186 # $(realpath ...) resolves symlinks 188 abs_objtree := $(realpath $(KBUILD_OUTPUT)) !! 187 abs_objtree := $(realpath $(abs_objtree)) 189 $(if $(abs_objtree),,$(error failed to create !! 188 else >> 189 abs_objtree := $(CURDIR) 190 endif # ifneq ($(KBUILD_OUTPUT),) 190 endif # ifneq ($(KBUILD_OUTPUT),) 191 191 192 ifneq ($(words $(subst :, ,$(abs_srctree))), 1 << 193 $(error source directory cannot contain spaces << 194 endif << 195 << 196 export sub_make_done := 1 << 197 << 198 endif # sub_make_done << 199 << 200 ifeq ($(abs_objtree),$(CURDIR)) 192 ifeq ($(abs_objtree),$(CURDIR)) 201 # Suppress "Entering directory ..." if we are !! 193 # Suppress "Entering directory ..." unless we are changing the work directory. 202 no-print-directory := --no-print-directory !! 194 MAKEFLAGS += --no-print-directory 203 else 195 else 204 # Recursion to show "Entering directory ..." << 205 need-sub-make := 1 196 need-sub-make := 1 206 endif 197 endif 207 198 208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 199 this-makefile := $(lastword $(MAKEFILE_LIST)) 209 # If --no-print-directory is unset, recurse on !! 200 abs_srctree := $(realpath $(dir $(this-makefile))) 210 # You may end up recursing into __sub-make twi !! 201 211 # behavior change in GNU Make 4.4.1. !! 202 ifneq ($(words $(subst :, ,$(abs_srctree))), 1) >> 203 $(error source directory cannot contain spaces or colons) >> 204 endif >> 205 >> 206 ifneq ($(filter 3.%,$(MAKE_VERSION)),) >> 207 # 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x >> 208 # We need to invoke sub-make to avoid implicit rules in the top Makefile. 212 need-sub-make := 1 209 need-sub-make := 1 >> 210 # Cancel implicit rules for this Makefile. >> 211 $(this-makefile): ; 213 endif 212 endif 214 213 >> 214 export abs_srctree abs_objtree >> 215 export sub_make_done := 1 >> 216 215 ifeq ($(need-sub-make),1) 217 ifeq ($(need-sub-make),1) 216 218 217 PHONY += $(MAKECMDGOALS) __sub-make 219 PHONY += $(MAKECMDGOALS) __sub-make 218 220 219 $(filter-out $(this-makefile), $(MAKECMDGOALS) 221 $(filter-out $(this-makefile), $(MAKECMDGOALS)) __all: __sub-make 220 @: 222 @: 221 223 222 # Invoke a second make in the output directory 224 # Invoke a second make in the output directory, passing relevant variables 223 __sub-make: 225 __sub-make: 224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 226 $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS) 225 -f $(abs_srctree)/Makefile $(MAKECMDGO << 226 227 227 else # need-sub-make !! 228 endif # need-sub-make >> 229 endif # sub_make_done 228 230 229 # We process the rest of the Makefile if this 231 # We process the rest of the Makefile if this is the final invocation of make >> 232 ifeq ($(need-sub-make),) >> 233 >> 234 # Do not print "Entering directory ...", >> 235 # but we want to display it when entering to the output directory >> 236 # so that IDEs/editors are able to understand relative filenames. >> 237 MAKEFLAGS += --no-print-directory 230 238 231 ifeq ($(abs_srctree),$(abs_objtree)) 239 ifeq ($(abs_srctree),$(abs_objtree)) 232 # building in the source tree 240 # building in the source tree 233 srctree := . 241 srctree := . 234 building_out_of_srctree := 242 building_out_of_srctree := 235 else 243 else 236 ifeq ($(abs_srctree)/,$(dir $(abs_objt 244 ifeq ($(abs_srctree)/,$(dir $(abs_objtree))) 237 # building in a subdirectory o 245 # building in a subdirectory of the source tree 238 srctree := .. 246 srctree := .. 239 else 247 else 240 srctree := $(abs_srctree) 248 srctree := $(abs_srctree) 241 endif 249 endif 242 building_out_of_srctree := 1 250 building_out_of_srctree := 1 243 endif 251 endif 244 252 245 ifneq ($(KBUILD_ABS_SRCTREE),) 253 ifneq ($(KBUILD_ABS_SRCTREE),) 246 srctree := $(abs_srctree) 254 srctree := $(abs_srctree) 247 endif 255 endif 248 256 249 objtree := . 257 objtree := . 250 << 251 VPATH := << 252 << 253 ifeq ($(KBUILD_EXTMOD),) << 254 ifdef building_out_of_srctree << 255 VPATH := $(srctree) 258 VPATH := $(srctree) 256 endif << 257 endif << 258 259 259 export building_out_of_srctree srctree objtree 260 export building_out_of_srctree srctree objtree VPATH 260 261 261 # To make sure we do not include .config for a 262 # To make sure we do not include .config for any of the *config targets 262 # catch them early, and hand them over to scri 263 # catch them early, and hand them over to scripts/kconfig/Makefile 263 # It is allowed to specify more targets when c 264 # It is allowed to specify more targets when calling make, including 264 # mixing *config targets and build targets. 265 # mixing *config targets and build targets. 265 # For example 'make oldconfig all'. 266 # For example 'make oldconfig all'. 266 # Detect when mixed targets is specified, and 267 # Detect when mixed targets is specified, and make a second invocation 267 # of make so .config is not included in this c 268 # of make so .config is not included in this case either (for *config). 268 269 269 version_h := include/generated/uapi/linux/vers 270 version_h := include/generated/uapi/linux/version.h 270 271 271 clean-targets := %clean mrproper cleandocs 272 clean-targets := %clean mrproper cleandocs 272 no-dot-config-targets := $(clean-targets) \ 273 no-dot-config-targets := $(clean-targets) \ 273 cscope gtags TAGS tag 274 cscope gtags TAGS tags help% %docs check% coccicheck \ 274 $(version_h) headers 275 $(version_h) headers headers_% archheaders archscripts \ 275 %asm-generic kernelve 276 %asm-generic kernelversion %src-pkg dt_binding_check \ 276 outputmakefile rustav 277 outputmakefile rustavailable rustfmt rustfmtcheck 277 no-sync-config-targets := $(no-dot-config-targ !! 278 # Installation targets should not require compiler. Unfortunately, vdso_install >> 279 # is an exception where build artifacts may be updated. This must be fixed. >> 280 no-compiler-targets := $(no-dot-config-targets) install dtbs_install \ >> 281 headers_install modules_install kernelrelease image_name >> 282 no-sync-config-targets := $(no-dot-config-targets) %install kernelrelease \ 278 image_name 283 image_name 279 single-targets := %.a %.i %.ko %.lds %.ll %.ls 284 single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.rsi %.s %.symtypes %/ 280 285 281 config-build := 286 config-build := 282 mixed-build := 287 mixed-build := 283 need-config := 1 288 need-config := 1 >> 289 need-compiler := 1 284 may-sync-config := 1 290 may-sync-config := 1 285 single-build := 291 single-build := 286 292 287 ifneq ($(filter $(no-dot-config-targets), $(MA 293 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 288 ifeq ($(filter-out $(no-dot-config-targets !! 294 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 289 need-config := !! 295 need-config := 290 endif !! 296 endif 291 endif 297 endif 292 298 293 ifneq ($(filter $(no-sync-config-targets), $(M !! 299 ifneq ($(filter $(no-compiler-targets), $(MAKECMDGOALS)),) 294 ifeq ($(filter-out $(no-sync-config-target !! 300 ifeq ($(filter-out $(no-compiler-targets), $(MAKECMDGOALS)),) 295 may-sync-config := !! 301 need-compiler := 296 endif !! 302 endif 297 endif 303 endif 298 304 299 need-compiler := $(may-sync-config) !! 305 ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) >> 306 ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) >> 307 may-sync-config := >> 308 endif >> 309 endif 300 310 301 ifneq ($(KBUILD_EXTMOD),) 311 ifneq ($(KBUILD_EXTMOD),) 302 may-sync-config := !! 312 may-sync-config := 303 endif 313 endif 304 314 305 ifeq ($(KBUILD_EXTMOD),) 315 ifeq ($(KBUILD_EXTMOD),) 306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 316 ifneq ($(filter %config,$(MAKECMDGOALS)),) 307 config-build := 1 !! 317 config-build := 1 308 ifneq ($(words $(MAKECMDGOALS)),1) !! 318 ifneq ($(words $(MAKECMDGOALS)),1) 309 mixed-build := 1 !! 319 mixed-build := 1 >> 320 endif 310 endif 321 endif 311 endif << 312 endif 322 endif 313 323 314 # We cannot build single targets and the other 324 # We cannot build single targets and the others at the same time 315 ifneq ($(filter $(single-targets), $(MAKECMDGO 325 ifneq ($(filter $(single-targets), $(MAKECMDGOALS)),) 316 single-build := 1 !! 326 single-build := 1 317 ifneq ($(filter-out $(single-targets), $(M !! 327 ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),) 318 mixed-build := 1 !! 328 mixed-build := 1 319 endif !! 329 endif 320 endif 330 endif 321 331 322 # For "make -j clean all", "make -j mrproper d 332 # For "make -j clean all", "make -j mrproper defconfig all", etc. 323 ifneq ($(filter $(clean-targets),$(MAKECMDGOAL 333 ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 324 ifneq ($(filter-out $(clean-targets),$(MAK !! 334 ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 325 mixed-build := 1 !! 335 mixed-build := 1 326 endif !! 336 endif 327 endif 337 endif 328 338 329 # install and modules_install need also be pro 339 # install and modules_install need also be processed one by one 330 ifneq ($(filter install,$(MAKECMDGOALS)),) 340 ifneq ($(filter install,$(MAKECMDGOALS)),) 331 ifneq ($(filter modules_install,$(MAKECMDG !! 341 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 332 mixed-build := 1 !! 342 mixed-build := 1 333 endif !! 343 endif 334 endif 344 endif 335 345 336 ifdef mixed-build 346 ifdef mixed-build 337 # ============================================ 347 # =========================================================================== 338 # We're called with mixed targets (*config and 348 # We're called with mixed targets (*config and build targets). 339 # Handle them one by one. 349 # Handle them one by one. 340 350 341 PHONY += $(MAKECMDGOALS) __build_one_by_one 351 PHONY += $(MAKECMDGOALS) __build_one_by_one 342 352 343 $(MAKECMDGOALS): __build_one_by_one 353 $(MAKECMDGOALS): __build_one_by_one 344 @: 354 @: 345 355 346 __build_one_by_one: 356 __build_one_by_one: 347 $(Q)set -e; \ 357 $(Q)set -e; \ 348 for i in $(MAKECMDGOALS); do \ 358 for i in $(MAKECMDGOALS); do \ 349 $(MAKE) -f $(srctree)/Makefile 359 $(MAKE) -f $(srctree)/Makefile $$i; \ 350 done 360 done 351 361 352 else # !mixed-build 362 else # !mixed-build 353 363 354 include $(srctree)/scripts/Kbuild.include 364 include $(srctree)/scripts/Kbuild.include 355 365 356 # Read KERNELRELEASE from include/config/kerne 366 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 357 KERNELRELEASE = $(call read-file, include/conf 367 KERNELRELEASE = $(call read-file, include/config/kernel.release) 358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. 368 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA 369 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 360 370 361 include $(srctree)/scripts/subarch.include 371 include $(srctree)/scripts/subarch.include 362 372 363 # Cross compiling and selecting different set 373 # Cross compiling and selecting different set of gcc/bin-utils 364 # -------------------------------------------- 374 # --------------------------------------------------------------------------- 365 # 375 # 366 # When performing cross compilation for other 376 # When performing cross compilation for other architectures ARCH shall be set 367 # to the target architecture. (See arch/* for 377 # to the target architecture. (See arch/* for the possibilities). 368 # ARCH can be set during invocation of make: 378 # ARCH can be set during invocation of make: 369 # make ARCH=arm64 !! 379 # make ARCH=ia64 370 # Another way is to have ARCH set in the envir 380 # Another way is to have ARCH set in the environment. 371 # The default ARCH is the host where make is e 381 # The default ARCH is the host where make is executed. 372 382 373 # CROSS_COMPILE specify the prefix used for al 383 # CROSS_COMPILE specify the prefix used for all executables used 374 # during compilation. Only gcc and related bin 384 # during compilation. Only gcc and related bin-utils executables 375 # are prefixed with $(CROSS_COMPILE). 385 # are prefixed with $(CROSS_COMPILE). 376 # CROSS_COMPILE can be set on the command line 386 # CROSS_COMPILE can be set on the command line 377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 387 # make CROSS_COMPILE=ia64-linux- 378 # Alternatively CROSS_COMPILE can be set in th 388 # Alternatively CROSS_COMPILE can be set in the environment. 379 # Default value for CROSS_COMPILE is not to pr 389 # Default value for CROSS_COMPILE is not to prefix executables 380 # Note: Some architectures assign CROSS_COMPIL 390 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 381 ARCH ?= $(SUBARCH) 391 ARCH ?= $(SUBARCH) 382 392 383 # Architecture as present in compile.h 393 # Architecture as present in compile.h 384 UTS_MACHINE := $(ARCH) 394 UTS_MACHINE := $(ARCH) 385 SRCARCH := $(ARCH) 395 SRCARCH := $(ARCH) 386 396 387 # Additional ARCH settings for x86 397 # Additional ARCH settings for x86 388 ifeq ($(ARCH),i386) 398 ifeq ($(ARCH),i386) 389 SRCARCH := x86 399 SRCARCH := x86 390 endif 400 endif 391 ifeq ($(ARCH),x86_64) 401 ifeq ($(ARCH),x86_64) 392 SRCARCH := x86 402 SRCARCH := x86 393 endif 403 endif 394 404 395 # Additional ARCH settings for sparc 405 # Additional ARCH settings for sparc 396 ifeq ($(ARCH),sparc32) 406 ifeq ($(ARCH),sparc32) 397 SRCARCH := sparc 407 SRCARCH := sparc 398 endif 408 endif 399 ifeq ($(ARCH),sparc64) 409 ifeq ($(ARCH),sparc64) 400 SRCARCH := sparc 410 SRCARCH := sparc 401 endif 411 endif 402 412 403 # Additional ARCH settings for parisc 413 # Additional ARCH settings for parisc 404 ifeq ($(ARCH),parisc64) 414 ifeq ($(ARCH),parisc64) 405 SRCARCH := parisc 415 SRCARCH := parisc 406 endif 416 endif 407 417 408 export cross_compiling := 418 export cross_compiling := 409 ifneq ($(SRCARCH),$(SUBARCH)) 419 ifneq ($(SRCARCH),$(SUBARCH)) 410 cross_compiling := 1 420 cross_compiling := 1 411 endif 421 endif 412 422 413 KCONFIG_CONFIG ?= .config 423 KCONFIG_CONFIG ?= .config 414 export KCONFIG_CONFIG 424 export KCONFIG_CONFIG 415 425 416 # SHELL used by kbuild 426 # SHELL used by kbuild 417 CONFIG_SHELL := sh 427 CONFIG_SHELL := sh 418 428 419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 429 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG 430 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d 431 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 422 432 423 ifneq ($(LLVM),) 433 ifneq ($(LLVM),) 424 ifneq ($(filter %/,$(LLVM)),) 434 ifneq ($(filter %/,$(LLVM)),) 425 LLVM_PREFIX := $(LLVM) 435 LLVM_PREFIX := $(LLVM) 426 else ifneq ($(filter -%,$(LLVM)),) 436 else ifneq ($(filter -%,$(LLVM)),) 427 LLVM_SUFFIX := $(LLVM) 437 LLVM_SUFFIX := $(LLVM) 428 endif 438 endif 429 439 430 HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) 440 HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) 431 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX) 441 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX) 432 else 442 else 433 HOSTCC = gcc 443 HOSTCC = gcc 434 HOSTCXX = g++ 444 HOSTCXX = g++ 435 endif 445 endif 436 HOSTRUSTC = rustc 446 HOSTRUSTC = rustc 437 HOSTPKG_CONFIG = pkg-config 447 HOSTPKG_CONFIG = pkg-config 438 448 439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto 449 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \ 440 -O2 -fomit-frame-poin !! 450 -O2 -fomit-frame-pointer -std=gnu11 \ >> 451 -Wdeclaration-after-statement 441 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) 452 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) $(USERCFLAGS) 442 KBUILD_USERLDFLAGS := $(USERLDFLAGS) 453 KBUILD_USERLDFLAGS := $(USERLDFLAGS) 443 454 444 # These flags apply to all Rust code in the tr 455 # These flags apply to all Rust code in the tree, including the kernel and 445 # host programs. 456 # host programs. 446 export rust_common_flags := --edition=2021 \ 457 export rust_common_flags := --edition=2021 \ 447 -Zbinary_dep_depin 458 -Zbinary_dep_depinfo=y \ 448 -Astable_features !! 459 -Dunsafe_op_in_unsafe_fn -Drust_2018_idioms \ 449 -Dunsafe_op_in_uns !! 460 -Dunreachable_pub -Dnon_ascii_idents \ 450 -Dnon_ascii_idents << 451 -Wrust_2018_idioms << 452 -Wunreachable_pub << 453 -Wmissing_docs \ 461 -Wmissing_docs \ 454 -Wrustdoc::missing !! 462 -Drustdoc::missing_crate_level_docs \ 455 -Wclippy::all \ !! 463 -Dclippy::correctness -Dclippy::style \ 456 -Wclippy::mut_mut !! 464 -Dclippy::suspicious -Dclippy::complexity \ 457 -Wclippy::needless !! 465 -Dclippy::perf \ 458 -Wclippy::needless !! 466 -Dclippy::let_unit_value -Dclippy::mut_mut \ 459 -Wclippy::no_mangl !! 467 -Dclippy::needless_bitwise_bool \ >> 468 -Dclippy::needless_continue \ 460 -Wclippy::dbg_macr 469 -Wclippy::dbg_macro 461 470 462 KBUILD_HOSTCFLAGS := $(KBUILD_USERHOSTCFLAGS !! 471 KBUILD_HOSTCFLAGS := $(KBUILD_USERHOSTCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS) 463 $(HOSTCFLAGS) -I $(srct !! 472 KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 464 KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CF << 465 -I $(srctree)/scripts/i << 466 KBUILD_HOSTRUSTFLAGS := $(rust_common_flags) - 473 KBUILD_HOSTRUSTFLAGS := $(rust_common_flags) -O -Cstrip=debuginfo \ 467 -Zallow-features= $(HO 474 -Zallow-features= $(HOSTRUSTFLAGS) 468 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(H 475 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 469 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOST 476 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 470 477 471 # Make variables (CC, etc...) 478 # Make variables (CC, etc...) 472 CPP = $(CC) -E 479 CPP = $(CC) -E 473 ifneq ($(LLVM),) 480 ifneq ($(LLVM),) 474 CC = $(LLVM_PREFIX)clang$(LLVM_SU 481 CC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) 475 LD = $(LLVM_PREFIX)ld.lld$(LLVM_S 482 LD = $(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX) 476 AR = $(LLVM_PREFIX)llvm-ar$(LLVM_ 483 AR = $(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX) 477 NM = $(LLVM_PREFIX)llvm-nm$(LLVM_ 484 NM = $(LLVM_PREFIX)llvm-nm$(LLVM_SUFFIX) 478 OBJCOPY = $(LLVM_PREFIX)llvm-objcopy$( 485 OBJCOPY = $(LLVM_PREFIX)llvm-objcopy$(LLVM_SUFFIX) 479 OBJDUMP = $(LLVM_PREFIX)llvm-objdump$( 486 OBJDUMP = $(LLVM_PREFIX)llvm-objdump$(LLVM_SUFFIX) 480 READELF = $(LLVM_PREFIX)llvm-readelf$( 487 READELF = $(LLVM_PREFIX)llvm-readelf$(LLVM_SUFFIX) 481 STRIP = $(LLVM_PREFIX)llvm-strip$(LL 488 STRIP = $(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX) 482 else 489 else 483 CC = $(CROSS_COMPILE)gcc 490 CC = $(CROSS_COMPILE)gcc 484 LD = $(CROSS_COMPILE)ld 491 LD = $(CROSS_COMPILE)ld 485 AR = $(CROSS_COMPILE)ar 492 AR = $(CROSS_COMPILE)ar 486 NM = $(CROSS_COMPILE)nm 493 NM = $(CROSS_COMPILE)nm 487 OBJCOPY = $(CROSS_COMPILE)objcopy 494 OBJCOPY = $(CROSS_COMPILE)objcopy 488 OBJDUMP = $(CROSS_COMPILE)objdump 495 OBJDUMP = $(CROSS_COMPILE)objdump 489 READELF = $(CROSS_COMPILE)readelf 496 READELF = $(CROSS_COMPILE)readelf 490 STRIP = $(CROSS_COMPILE)strip 497 STRIP = $(CROSS_COMPILE)strip 491 endif 498 endif 492 RUSTC = rustc 499 RUSTC = rustc 493 RUSTDOC = rustdoc 500 RUSTDOC = rustdoc 494 RUSTFMT = rustfmt 501 RUSTFMT = rustfmt 495 CLIPPY_DRIVER = clippy-driver 502 CLIPPY_DRIVER = clippy-driver 496 BINDGEN = bindgen 503 BINDGEN = bindgen >> 504 CARGO = cargo 497 PAHOLE = pahole 505 PAHOLE = pahole 498 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve 506 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve_btfids/resolve_btfids 499 LEX = flex 507 LEX = flex 500 YACC = bison 508 YACC = bison 501 AWK = awk 509 AWK = awk 502 INSTALLKERNEL := installkernel 510 INSTALLKERNEL := installkernel >> 511 DEPMOD = depmod 503 PERL = perl 512 PERL = perl 504 PYTHON3 = python3 513 PYTHON3 = python3 505 CHECK = sparse 514 CHECK = sparse 506 BASH = bash 515 BASH = bash 507 KGZIP = gzip 516 KGZIP = gzip 508 KBZIP2 = bzip2 517 KBZIP2 = bzip2 509 KLZOP = lzop 518 KLZOP = lzop 510 LZMA = lzma 519 LZMA = lzma 511 LZ4 = lz4c 520 LZ4 = lz4c 512 XZ = xz 521 XZ = xz 513 ZSTD = zstd 522 ZSTD = zstd 514 523 >> 524 PAHOLE_FLAGS = $(shell PAHOLE=$(PAHOLE) $(srctree)/scripts/pahole-flags.sh) >> 525 515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC 526 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 516 -Wbitwise -Wno-return-void - 527 -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 517 NOSTDINC_FLAGS := 528 NOSTDINC_FLAGS := 518 CFLAGS_MODULE = 529 CFLAGS_MODULE = 519 RUSTFLAGS_MODULE = 530 RUSTFLAGS_MODULE = 520 AFLAGS_MODULE = 531 AFLAGS_MODULE = 521 LDFLAGS_MODULE = 532 LDFLAGS_MODULE = 522 CFLAGS_KERNEL = 533 CFLAGS_KERNEL = 523 RUSTFLAGS_KERNEL = 534 RUSTFLAGS_KERNEL = 524 AFLAGS_KERNEL = 535 AFLAGS_KERNEL = 525 LDFLAGS_vmlinux = 536 LDFLAGS_vmlinux = 526 537 527 # Use USERINCLUDE when you must reference the 538 # Use USERINCLUDE when you must reference the UAPI directories only. 528 USERINCLUDE := \ 539 USERINCLUDE := \ 529 -I$(srctree)/arch/$(SRCARCH)/i 540 -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 530 -I$(objtree)/arch/$(SRCARCH)/i 541 -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 531 -I$(srctree)/include/uapi \ 542 -I$(srctree)/include/uapi \ 532 -I$(objtree)/include/generated 543 -I$(objtree)/include/generated/uapi \ 533 -include $(srctree)/include/li 544 -include $(srctree)/include/linux/compiler-version.h \ 534 -include $(srctree)/include/li 545 -include $(srctree)/include/linux/kconfig.h 535 546 536 # Use LINUXINCLUDE when you must reference the 547 # Use LINUXINCLUDE when you must reference the include/ directory. 537 # Needed to be compatible with the O= option 548 # Needed to be compatible with the O= option 538 LINUXINCLUDE := \ 549 LINUXINCLUDE := \ 539 -I$(srctree)/arch/$(SRCARCH)/i 550 -I$(srctree)/arch/$(SRCARCH)/include \ 540 -I$(objtree)/arch/$(SRCARCH)/i 551 -I$(objtree)/arch/$(SRCARCH)/include/generated \ 541 $(if $(building_out_of_srctree 552 $(if $(building_out_of_srctree),-I$(srctree)/include) \ 542 -I$(objtree)/include \ 553 -I$(objtree)/include \ 543 $(USERINCLUDE) 554 $(USERINCLUDE) 544 555 545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 556 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 546 !! 557 KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ 547 KBUILD_CFLAGS := !! 558 -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ 548 KBUILD_CFLAGS += -std=gnu11 !! 559 -Werror=implicit-function-declaration -Werror=implicit-int \ 549 KBUILD_CFLAGS += -fshort-wchar !! 560 -Werror=return-type -Wno-format-security -funsigned-char \ 550 KBUILD_CFLAGS += -funsigned-char !! 561 -std=gnu11 551 KBUILD_CFLAGS += -fno-common << 552 KBUILD_CFLAGS += -fno-PIE << 553 KBUILD_CFLAGS += -fno-strict-aliasing << 554 << 555 KBUILD_CPPFLAGS := -D__KERNEL__ 562 KBUILD_CPPFLAGS := -D__KERNEL__ 556 KBUILD_RUSTFLAGS := $(rust_common_flags) \ 563 KBUILD_RUSTFLAGS := $(rust_common_flags) \ >> 564 --target=$(objtree)/scripts/target.json \ 557 -Cpanic=abort -Cembed-bitc 565 -Cpanic=abort -Cembed-bitcode=n -Clto=n \ 558 -Cforce-unwind-tables=n -C 566 -Cforce-unwind-tables=n -Ccodegen-units=1 \ 559 -Csymbol-mangling-version= 567 -Csymbol-mangling-version=v0 \ 560 -Crelocation-model=static 568 -Crelocation-model=static \ 561 -Zfunction-sections=n \ 569 -Zfunction-sections=n \ 562 -Wclippy::float_arithmetic !! 570 -Dclippy::float_arithmetic 563 571 564 KBUILD_AFLAGS_KERNEL := 572 KBUILD_AFLAGS_KERNEL := 565 KBUILD_CFLAGS_KERNEL := 573 KBUILD_CFLAGS_KERNEL := 566 KBUILD_RUSTFLAGS_KERNEL := 574 KBUILD_RUSTFLAGS_KERNEL := 567 KBUILD_AFLAGS_MODULE := -DMODULE 575 KBUILD_AFLAGS_MODULE := -DMODULE 568 KBUILD_CFLAGS_MODULE := -DMODULE 576 KBUILD_CFLAGS_MODULE := -DMODULE 569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE 577 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE 570 KBUILD_LDFLAGS_MODULE := 578 KBUILD_LDFLAGS_MODULE := 571 KBUILD_LDFLAGS := 579 KBUILD_LDFLAGS := 572 CLANG_FLAGS := 580 CLANG_FLAGS := 573 581 574 ifeq ($(KBUILD_CLIPPY),1) 582 ifeq ($(KBUILD_CLIPPY),1) 575 RUSTC_OR_CLIPPY_QUIET := CLIPPY 583 RUSTC_OR_CLIPPY_QUIET := CLIPPY 576 RUSTC_OR_CLIPPY = $(CLIPPY_DRIVER) 584 RUSTC_OR_CLIPPY = $(CLIPPY_DRIVER) 577 else 585 else 578 RUSTC_OR_CLIPPY_QUIET := RUSTC 586 RUSTC_OR_CLIPPY_QUIET := RUSTC 579 RUSTC_OR_CLIPPY = $(RUSTC) 587 RUSTC_OR_CLIPPY = $(RUSTC) 580 endif 588 endif 581 589 >> 590 ifdef RUST_LIB_SRC >> 591 export RUST_LIB_SRC >> 592 endif >> 593 582 # Allows the usage of unstable features in sta 594 # Allows the usage of unstable features in stable compilers. 583 export RUSTC_BOOTSTRAP := 1 595 export RUSTC_BOOTSTRAP := 1 584 596 585 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K 597 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC HOSTPKG_CONFIG 586 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q !! 598 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_QUIET RUSTC_OR_CLIPPY BINDGEN CARGO 587 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS 599 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS 588 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF 600 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF PAHOLE RESOLVE_BTFIDS LEX YACC AWK INSTALLKERNEL 589 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ 601 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX 590 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD 602 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD 591 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS 603 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE 592 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS 604 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS 593 605 594 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC 606 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 595 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU 607 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 596 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF 608 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTFLAGS_MODULE 597 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 609 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 598 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU 610 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_RUSTFLAGS_MODULE KBUILD_LDFLAGS_MODULE 599 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN 611 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL KBUILD_RUSTFLAGS_KERNEL >> 612 export PAHOLE_FLAGS 600 613 601 # Files to ignore in find ... statements 614 # Files to ignore in find ... statements 602 615 603 export RCS_FIND_IGNORE := \( -name SCCS -o -na 616 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 604 -name CVS -o -name . 617 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 605 -prune -o 618 -prune -o >> 619 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ >> 620 --exclude CVS --exclude .pc --exclude .hg --exclude .git 606 621 607 # ============================================ 622 # =========================================================================== 608 # Rules shared between *config targets and bui 623 # Rules shared between *config targets and build targets 609 624 610 # Basic helpers built in scripts/basic/ 625 # Basic helpers built in scripts/basic/ 611 PHONY += scripts_basic 626 PHONY += scripts_basic 612 scripts_basic: 627 scripts_basic: 613 $(Q)$(MAKE) $(build)=scripts/basic 628 $(Q)$(MAKE) $(build)=scripts/basic 614 629 615 PHONY += outputmakefile 630 PHONY += outputmakefile 616 ifdef building_out_of_srctree 631 ifdef building_out_of_srctree 617 # Before starting out-of-tree build, make sure 632 # Before starting out-of-tree build, make sure the source tree is clean. 618 # outputmakefile generates a Makefile in the o 633 # outputmakefile generates a Makefile in the output directory, if using a 619 # separate output directory. This allows conve 634 # separate output directory. This allows convenient use of make in the 620 # output directory. 635 # output directory. 621 # At the same time when output Makefile genera 636 # At the same time when output Makefile generated, generate .gitignore to 622 # ignore whole output directory 637 # ignore whole output directory 623 638 624 quiet_cmd_makefile = GEN Makefile 639 quiet_cmd_makefile = GEN Makefile 625 cmd_makefile = { \ 640 cmd_makefile = { \ 626 echo "\# Automatically generated by $( 641 echo "\# Automatically generated by $(srctree)/Makefile: don't edit"; \ 627 echo "include $(srctree)/Makefile"; \ 642 echo "include $(srctree)/Makefile"; \ 628 } > Makefile 643 } > Makefile 629 644 630 outputmakefile: 645 outputmakefile: 631 @if [ -f $(srctree)/.config -o \ 646 @if [ -f $(srctree)/.config -o \ 632 -d $(srctree)/include/config 647 -d $(srctree)/include/config -o \ 633 -d $(srctree)/arch/$(SRCARCH) 648 -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \ 634 echo >&2 "***"; \ 649 echo >&2 "***"; \ 635 echo >&2 "*** The source tree 650 echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \ 636 echo >&2 "*** in $(abs_srctree 651 echo >&2 "*** in $(abs_srctree)";\ 637 echo >&2 "***"; \ 652 echo >&2 "***"; \ 638 false; \ 653 false; \ 639 fi 654 fi 640 $(Q)ln -fsn $(srctree) source 655 $(Q)ln -fsn $(srctree) source 641 $(call cmd,makefile) 656 $(call cmd,makefile) 642 $(Q)test -e .gitignore || \ 657 $(Q)test -e .gitignore || \ 643 { echo "# this is build directory, ign 658 { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore 644 endif 659 endif 645 660 646 # The expansion should be delayed until arch/$ 661 # The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 647 # Some architectures define CROSS_COMPILE in a 662 # Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 648 # CC_VERSION_TEXT and RUSTC_VERSION_TEXT are r !! 663 # CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 649 # need export), and from include/config/auto.c !! 664 # and from include/config/auto.conf.cmd to detect the compiler upgrade. 650 # upgrade. << 651 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC 665 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC_ALL=C $(CC) --version 2>/dev/null | head -n 1)) 652 RUSTC_VERSION_TEXT = $(subst $(pound),,$(shell << 653 666 654 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), 667 ifneq ($(findstring clang,$(CC_VERSION_TEXT)),) 655 include $(srctree)/scripts/Makefile.clang 668 include $(srctree)/scripts/Makefile.clang 656 endif 669 endif 657 670 658 # Include this also for config targets because 671 # Include this also for config targets because some architectures need 659 # cc-cross-prefix to determine CROSS_COMPILE. 672 # cc-cross-prefix to determine CROSS_COMPILE. 660 ifdef need-compiler 673 ifdef need-compiler 661 include $(srctree)/scripts/Makefile.compiler 674 include $(srctree)/scripts/Makefile.compiler 662 endif 675 endif 663 676 664 ifdef config-build 677 ifdef config-build 665 # ============================================ 678 # =========================================================================== 666 # *config targets only - make sure prerequisit 679 # *config targets only - make sure prerequisites are updated, and descend 667 # in scripts/kconfig to make the *config targe 680 # in scripts/kconfig to make the *config target 668 681 669 # Read arch-specific Makefile to set KBUILD_DE !! 682 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 670 # KBUILD_DEFCONFIG may point out an alternativ 683 # KBUILD_DEFCONFIG may point out an alternative default configuration 671 # used for 'make defconfig' 684 # used for 'make defconfig' 672 include $(srctree)/arch/$(SRCARCH)/Makefile 685 include $(srctree)/arch/$(SRCARCH)/Makefile 673 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS !! 686 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 674 687 675 config: outputmakefile scripts_basic FORCE 688 config: outputmakefile scripts_basic FORCE 676 $(Q)$(MAKE) $(build)=scripts/kconfig $ 689 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 677 690 678 %config: outputmakefile scripts_basic FORCE 691 %config: outputmakefile scripts_basic FORCE 679 $(Q)$(MAKE) $(build)=scripts/kconfig $ 692 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 680 693 681 else #!config-build 694 else #!config-build 682 # ============================================ 695 # =========================================================================== 683 # Build targets only - this includes vmlinux, !! 696 # Build targets only - this includes vmlinux, arch specific targets, clean 684 # targets and others. In general all targets e 697 # targets and others. In general all targets except *config targets. 685 698 686 # If building an external module we do not car 699 # If building an external module we do not care about the all: rule 687 # but instead __all depend on modules 700 # but instead __all depend on modules 688 PHONY += all 701 PHONY += all 689 ifeq ($(KBUILD_EXTMOD),) 702 ifeq ($(KBUILD_EXTMOD),) 690 __all: all 703 __all: all 691 else 704 else 692 __all: modules 705 __all: modules 693 endif 706 endif 694 707 695 targets := 708 targets := 696 709 697 # Decide whether to build built-in, modular, o 710 # Decide whether to build built-in, modular, or both. 698 # Normally, just do built-in. 711 # Normally, just do built-in. 699 712 700 KBUILD_MODULES := 713 KBUILD_MODULES := 701 KBUILD_BUILTIN := 1 714 KBUILD_BUILTIN := 1 702 715 703 # If we have only "make modules", don't compil 716 # If we have only "make modules", don't compile built-in objects. 704 ifeq ($(MAKECMDGOALS),modules) 717 ifeq ($(MAKECMDGOALS),modules) 705 KBUILD_BUILTIN := 718 KBUILD_BUILTIN := 706 endif 719 endif 707 720 708 # If we have "make <whatever> modules", compil 721 # If we have "make <whatever> modules", compile modules 709 # in addition to whatever we do anyway. 722 # in addition to whatever we do anyway. 710 # Just "make" or "make all" shall build module 723 # Just "make" or "make all" shall build modules as well 711 724 712 ifneq ($(filter all modules nsdeps %compile_co 725 ifneq ($(filter all modules nsdeps %compile_commands.json clang-%,$(MAKECMDGOALS)),) 713 KBUILD_MODULES := 1 726 KBUILD_MODULES := 1 714 endif 727 endif 715 728 716 ifeq ($(MAKECMDGOALS),) 729 ifeq ($(MAKECMDGOALS),) 717 KBUILD_MODULES := 1 730 KBUILD_MODULES := 1 718 endif 731 endif 719 732 720 export KBUILD_MODULES KBUILD_BUILTIN 733 export KBUILD_MODULES KBUILD_BUILTIN 721 734 722 ifdef need-config 735 ifdef need-config 723 include include/config/auto.conf 736 include include/config/auto.conf 724 endif 737 endif 725 738 726 ifeq ($(KBUILD_EXTMOD),) 739 ifeq ($(KBUILD_EXTMOD),) 727 # Objects we will link into vmlinux / subdirs 740 # Objects we will link into vmlinux / subdirs we need to visit 728 core-y := 741 core-y := 729 drivers-y := 742 drivers-y := 730 libs-y := lib/ 743 libs-y := lib/ 731 endif # KBUILD_EXTMOD 744 endif # KBUILD_EXTMOD 732 745 733 # The all: target is the default when no targe 746 # The all: target is the default when no target is given on the 734 # command line. 747 # command line. 735 # This allow a user to issue only 'make' to bu 748 # This allow a user to issue only 'make' to build a kernel including modules 736 # Defaults to vmlinux, but the arch makefile u 749 # Defaults to vmlinux, but the arch makefile usually adds further targets 737 all: vmlinux 750 all: vmlinux 738 751 739 CFLAGS_GCOV := -fprofile-arcs -ftest-cover 752 CFLAGS_GCOV := -fprofile-arcs -ftest-coverage 740 ifdef CONFIG_CC_IS_GCC 753 ifdef CONFIG_CC_IS_GCC 741 CFLAGS_GCOV += -fno-tree-loop-im 754 CFLAGS_GCOV += -fno-tree-loop-im 742 endif 755 endif 743 export CFLAGS_GCOV 756 export CFLAGS_GCOV 744 757 745 # The arch Makefiles can override CC_FLAGS_FTR 758 # The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. 746 ifdef CONFIG_FUNCTION_TRACER 759 ifdef CONFIG_FUNCTION_TRACER 747 CC_FLAGS_FTRACE := -pg 760 CC_FLAGS_FTRACE := -pg 748 endif 761 endif 749 762 750 include $(srctree)/arch/$(SRCARCH)/Makefile 763 include $(srctree)/arch/$(SRCARCH)/Makefile 751 764 752 ifdef need-config 765 ifdef need-config 753 ifdef may-sync-config 766 ifdef may-sync-config 754 # Read in dependencies to all Kconfig* files, 767 # Read in dependencies to all Kconfig* files, make sure to run syncconfig if 755 # changes are detected. This should be include 768 # changes are detected. This should be included after arch/$(SRCARCH)/Makefile 756 # because some architectures define CROSS_COMP 769 # because some architectures define CROSS_COMPILE there. 757 include include/config/auto.conf.cmd 770 include include/config/auto.conf.cmd 758 771 759 $(KCONFIG_CONFIG): 772 $(KCONFIG_CONFIG): 760 @echo >&2 '***' 773 @echo >&2 '***' 761 @echo >&2 '*** Configuration file "$@" 774 @echo >&2 '*** Configuration file "$@" not found!' 762 @echo >&2 '***' 775 @echo >&2 '***' 763 @echo >&2 '*** Please run some configu 776 @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or' 764 @echo >&2 '*** "make menuconfig" or "m 777 @echo >&2 '*** "make menuconfig" or "make xconfig").' 765 @echo >&2 '***' 778 @echo >&2 '***' 766 @/bin/false 779 @/bin/false 767 780 768 # The actual configuration files used during t 781 # The actual configuration files used during the build are stored in 769 # include/generated/ and include/config/. Upda 782 # include/generated/ and include/config/. Update them if .config is newer than 770 # include/config/auto.conf (which mirrors .con 783 # include/config/auto.conf (which mirrors .config). 771 # 784 # 772 # This exploits the 'multi-target pattern rule 785 # This exploits the 'multi-target pattern rule' trick. 773 # The syncconfig should be executed only once 786 # The syncconfig should be executed only once to make all the targets. 774 # (Note: use the grouped target '&:' when we b 787 # (Note: use the grouped target '&:' when we bump to GNU Make 4.3) 775 # 788 # 776 # Do not use $(call cmd,...) here. That would 789 # Do not use $(call cmd,...) here. That would suppress prompts from syncconfig, 777 # so you cannot notice that Kconfig is waiting 790 # so you cannot notice that Kconfig is waiting for the user input. 778 %/config/auto.conf %/config/auto.conf.cmd %/ge 791 %/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h %/generated/rustc_cfg: $(KCONFIG_CONFIG) 779 $(Q)$(kecho) " SYNC $@" 792 $(Q)$(kecho) " SYNC $@" 780 $(Q)$(MAKE) -f $(srctree)/Makefile syn 793 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 781 else # !may-sync-config 794 else # !may-sync-config 782 # External modules and some install targets ne 795 # External modules and some install targets need include/generated/autoconf.h 783 # and include/config/auto.conf but do not care 796 # and include/config/auto.conf but do not care if they are up-to-date. 784 # Use auto.conf to trigger the test 797 # Use auto.conf to trigger the test 785 PHONY += include/config/auto.conf 798 PHONY += include/config/auto.conf 786 799 787 include/config/auto.conf: 800 include/config/auto.conf: 788 @test -e include/generated/autoconf.h 801 @test -e include/generated/autoconf.h -a -e $@ || ( \ 789 echo >&2; 802 echo >&2; \ 790 echo >&2 " ERROR: Kernel configuratio 803 echo >&2 " ERROR: Kernel configuration is invalid."; \ 791 echo >&2 " include/generated/a 804 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 792 echo >&2 " Run 'make oldconfig 805 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 793 echo >&2 ; 806 echo >&2 ; \ 794 /bin/false) 807 /bin/false) 795 808 796 endif # may-sync-config 809 endif # may-sync-config 797 endif # need-config 810 endif # need-config 798 811 799 KBUILD_CFLAGS += -fno-delete-null-pointer-ch 812 KBUILD_CFLAGS += -fno-delete-null-pointer-checks >> 813 KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) >> 814 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) >> 815 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) >> 816 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 800 817 801 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 818 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 802 KBUILD_CFLAGS += -O2 819 KBUILD_CFLAGS += -O2 803 KBUILD_RUSTFLAGS += -Copt-level=2 820 KBUILD_RUSTFLAGS += -Copt-level=2 804 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 821 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 805 KBUILD_CFLAGS += -Os 822 KBUILD_CFLAGS += -Os 806 KBUILD_RUSTFLAGS += -Copt-level=s 823 KBUILD_RUSTFLAGS += -Copt-level=s 807 endif 824 endif 808 825 809 # Always set `debug-assertions` and `overflow- 826 # Always set `debug-assertions` and `overflow-checks` because their default 810 # depends on `opt-level` and `debug-assertions 827 # depends on `opt-level` and `debug-assertions`, respectively. 811 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( 828 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $(CONFIG_RUST_DEBUG_ASSERTIONS),y,n) 812 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C 829 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(CONFIG_RUST_OVERFLOW_CHECKS),y,n) 813 830 814 # Tell gcc to never replace conditional load w 831 # Tell gcc to never replace conditional load with a non-conditional one 815 ifdef CONFIG_CC_IS_GCC 832 ifdef CONFIG_CC_IS_GCC 816 # gcc-10 renamed --param=allow-store-data-race 833 # gcc-10 renamed --param=allow-store-data-races=0 to 817 # -fno-allow-store-data-races. 834 # -fno-allow-store-data-races. 818 KBUILD_CFLAGS += $(call cc-option,--param=al 835 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 819 KBUILD_CFLAGS += $(call cc-option,-fno-allow 836 KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) 820 endif 837 endif 821 838 822 ifdef CONFIG_READABLE_ASM 839 ifdef CONFIG_READABLE_ASM 823 # Disable optimizations that make assembler li 840 # Disable optimizations that make assembler listings hard to read. 824 # reorder blocks reorders the control in the f 841 # reorder blocks reorders the control in the function 825 # ipa clone creates specialized cloned functio 842 # ipa clone creates specialized cloned functions 826 # partial inlining inlines only parts of funct 843 # partial inlining inlines only parts of functions 827 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- 844 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa-cp-clone -fno-partial-inlining 828 endif 845 endif 829 846 >> 847 ifneq ($(CONFIG_FRAME_WARN),0) >> 848 KBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN) >> 849 endif >> 850 830 stackp-flags-y 851 stackp-flags-y := -fno-stack-protector 831 stackp-flags-$(CONFIG_STACKPROTECTOR) 852 stackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector 832 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) 853 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong 833 854 834 KBUILD_CFLAGS += $(stackp-flags-y) 855 KBUILD_CFLAGS += $(stackp-flags-y) 835 856 >> 857 KBUILD_CPPFLAGS-$(CONFIG_WERROR) += -Werror >> 858 KBUILD_CPPFLAGS += $(KBUILD_CPPFLAGS-y) >> 859 KBUILD_CFLAGS-$(CONFIG_CC_NO_ARRAY_BOUNDS) += -Wno-array-bounds >> 860 836 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning 861 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarnings 837 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) 862 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) 838 863 >> 864 ifdef CONFIG_CC_IS_CLANG >> 865 # The kernel builds with '-std=gnu11' so use of GNU extensions is acceptable. >> 866 KBUILD_CFLAGS += -Wno-gnu >> 867 else >> 868 >> 869 # gcc inanely warns about local variables called 'main' >> 870 KBUILD_CFLAGS += -Wno-main >> 871 endif >> 872 >> 873 # These warnings generated too much noise in a regular build. >> 874 # Use make W=1 to enable them (see scripts/Makefile.extrawarn) >> 875 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) >> 876 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) >> 877 >> 878 # These result in bogus false positives >> 879 KBUILD_CFLAGS += $(call cc-disable-warning, dangling-pointer) >> 880 839 ifdef CONFIG_FRAME_POINTER 881 ifdef CONFIG_FRAME_POINTER 840 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 882 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 841 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y 883 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y 842 else 884 else 843 # Some targets (ARM with Thumb2, for example), 885 # Some targets (ARM with Thumb2, for example), can't be built with frame 844 # pointers. For those, we don't have FUNCTION 886 # pointers. For those, we don't have FUNCTION_TRACER automatically 845 # select FRAME_POINTER. However, FUNCTION_TRA 887 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 846 # incompatible with -fomit-frame-pointer with 888 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 847 # -fomit-frame-pointer with FUNCTION_TRACER. 889 # -fomit-frame-pointer with FUNCTION_TRACER. 848 # In the Rust target specification, "frame-poi 890 # In the Rust target specification, "frame-pointer" is set explicitly 849 # to "may-omit". 891 # to "may-omit". 850 ifndef CONFIG_FUNCTION_TRACER 892 ifndef CONFIG_FUNCTION_TRACER 851 KBUILD_CFLAGS += -fomit-frame-pointer 893 KBUILD_CFLAGS += -fomit-frame-pointer 852 endif 894 endif 853 endif 895 endif 854 896 855 # Initialize all stack variables with a 0xAA p 897 # Initialize all stack variables with a 0xAA pattern. 856 ifdef CONFIG_INIT_STACK_ALL_PATTERN 898 ifdef CONFIG_INIT_STACK_ALL_PATTERN 857 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat 899 KBUILD_CFLAGS += -ftrivial-auto-var-init=pattern 858 endif 900 endif 859 901 860 # Initialize all stack variables with a zero v 902 # Initialize all stack variables with a zero value. 861 ifdef CONFIG_INIT_STACK_ALL_ZERO 903 ifdef CONFIG_INIT_STACK_ALL_ZERO 862 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer 904 KBUILD_CFLAGS += -ftrivial-auto-var-init=zero 863 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER 905 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER 864 # https://github.com/llvm/llvm-project/issues/ 906 # https://github.com/llvm/llvm-project/issues/44842 865 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi 907 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang 866 export CC_AUTO_VAR_INIT_ZERO_ENABLER 908 export CC_AUTO_VAR_INIT_ZERO_ENABLER 867 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA 909 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENABLER) 868 endif 910 endif 869 endif 911 endif 870 912 871 # While VLAs have been removed, GCC produces u 913 # While VLAs have been removed, GCC produces unreachable stack probes 872 # for the randomize_kstack_offset feature. Dis 914 # for the randomize_kstack_offset feature. Disable it for all compilers. 873 KBUILD_CFLAGS += $(call cc-option, -fno-stac 915 KBUILD_CFLAGS += $(call cc-option, -fno-stack-clash-protection) 874 916 875 # Clear used registers at func exit (to reduce 917 # Clear used registers at func exit (to reduce data lifetime and ROP gadgets). 876 ifdef CONFIG_ZERO_CALL_USED_REGS 918 ifdef CONFIG_ZERO_CALL_USED_REGS 877 KBUILD_CFLAGS += -fzero-call-used-regs=used- 919 KBUILD_CFLAGS += -fzero-call-used-regs=used-gpr 878 endif 920 endif 879 921 880 ifdef CONFIG_FUNCTION_TRACER 922 ifdef CONFIG_FUNCTION_TRACER 881 ifdef CONFIG_FTRACE_MCOUNT_USE_CC 923 ifdef CONFIG_FTRACE_MCOUNT_USE_CC 882 CC_FLAGS_FTRACE += -mrecord-mcount 924 CC_FLAGS_FTRACE += -mrecord-mcount 883 ifdef CONFIG_HAVE_NOP_MCOUNT 925 ifdef CONFIG_HAVE_NOP_MCOUNT 884 ifeq ($(call cc-option-yn, -mnop-mcount),y 926 ifeq ($(call cc-option-yn, -mnop-mcount),y) 885 CC_FLAGS_FTRACE += -mnop-mcount 927 CC_FLAGS_FTRACE += -mnop-mcount 886 CC_FLAGS_USING += -DCC_USING_NOP_MCOU 928 CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 887 endif 929 endif 888 endif 930 endif 889 endif 931 endif 890 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL 932 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL 891 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT 933 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT 892 CC_FLAGS_USING += -DCC_USING_NOP_MCOU 934 CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 893 endif 935 endif 894 endif 936 endif 895 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT 937 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT 896 ifdef CONFIG_HAVE_C_RECORDMCOUNT 938 ifdef CONFIG_HAVE_C_RECORDMCOUNT 897 BUILD_C_RECORDMCOUNT := y 939 BUILD_C_RECORDMCOUNT := y 898 export BUILD_C_RECORDMCOUNT 940 export BUILD_C_RECORDMCOUNT 899 endif 941 endif 900 endif 942 endif 901 ifdef CONFIG_HAVE_FENTRY 943 ifdef CONFIG_HAVE_FENTRY 902 # s390-linux-gnu-gcc did not support -mfentr 944 # s390-linux-gnu-gcc did not support -mfentry until gcc-9. 903 ifeq ($(call cc-option-yn, -mfentry),y) 945 ifeq ($(call cc-option-yn, -mfentry),y) 904 CC_FLAGS_FTRACE += -mfentry 946 CC_FLAGS_FTRACE += -mfentry 905 CC_FLAGS_USING += -DCC_USING_FENTRY 947 CC_FLAGS_USING += -DCC_USING_FENTRY 906 endif 948 endif 907 endif 949 endif 908 export CC_FLAGS_FTRACE 950 export CC_FLAGS_FTRACE 909 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA 951 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 910 KBUILD_AFLAGS += $(CC_FLAGS_USING) 952 KBUILD_AFLAGS += $(CC_FLAGS_USING) 911 endif 953 endif 912 954 913 # We trigger additional mismatches with less i 955 # We trigger additional mismatches with less inlining 914 ifdef CONFIG_DEBUG_SECTION_MISMATCH 956 ifdef CONFIG_DEBUG_SECTION_MISMATCH 915 KBUILD_CFLAGS += -fno-inline-functions-called- 957 KBUILD_CFLAGS += -fno-inline-functions-called-once 916 endif 958 endif 917 959 918 # `rustc`'s `-Zfunction-sections` applies to d 960 # `rustc`'s `-Zfunction-sections` applies to data too (as of 1.59.0). 919 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 961 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 920 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f 962 KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 921 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections 963 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections=y 922 LDFLAGS_vmlinux += --gc-sections 964 LDFLAGS_vmlinux += --gc-sections 923 endif 965 endif 924 966 925 ifdef CONFIG_SHADOW_CALL_STACK 967 ifdef CONFIG_SHADOW_CALL_STACK 926 ifndef CONFIG_DYNAMIC_SCS 968 ifndef CONFIG_DYNAMIC_SCS 927 CC_FLAGS_SCS := -fsanitize=shadow-call-stac 969 CC_FLAGS_SCS := -fsanitize=shadow-call-stack 928 KBUILD_CFLAGS += $(CC_FLAGS_SCS) 970 KBUILD_CFLAGS += $(CC_FLAGS_SCS) 929 KBUILD_RUSTFLAGS += -Zsanitizer=shadow-call-st << 930 endif 971 endif 931 export CC_FLAGS_SCS 972 export CC_FLAGS_SCS 932 endif 973 endif 933 974 934 ifdef CONFIG_LTO_CLANG 975 ifdef CONFIG_LTO_CLANG 935 ifdef CONFIG_LTO_CLANG_THIN 976 ifdef CONFIG_LTO_CLANG_THIN 936 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit 977 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit >> 978 KBUILD_LDFLAGS += --thinlto-cache-dir=$(extmod_prefix).thinlto-cache 937 else 979 else 938 CC_FLAGS_LTO := -flto 980 CC_FLAGS_LTO := -flto 939 endif 981 endif 940 CC_FLAGS_LTO += -fvisibility=hidden 982 CC_FLAGS_LTO += -fvisibility=hidden 941 983 942 # Limit inlining across translation units to r 984 # Limit inlining across translation units to reduce binary size 943 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 985 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 >> 986 >> 987 # Check for frame size exceeding threshold during prolog/epilog insertion >> 988 # when using lld < 13.0.0. >> 989 ifneq ($(CONFIG_FRAME_WARN),0) >> 990 ifeq ($(call test-lt, $(CONFIG_LLD_VERSION), 130000),y) >> 991 KBUILD_LDFLAGS += -plugin-opt=-warn-stack-size=$(CONFIG_FRAME_WARN) >> 992 endif >> 993 endif 944 endif 994 endif 945 995 946 ifdef CONFIG_LTO 996 ifdef CONFIG_LTO 947 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) 997 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) 948 KBUILD_AFLAGS += -fno-lto 998 KBUILD_AFLAGS += -fno-lto 949 export CC_FLAGS_LTO 999 export CC_FLAGS_LTO 950 endif 1000 endif 951 1001 952 ifdef CONFIG_CFI_CLANG 1002 ifdef CONFIG_CFI_CLANG 953 CC_FLAGS_CFI := -fsanitize=kcfi 1003 CC_FLAGS_CFI := -fsanitize=kcfi 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) 1004 KBUILD_CFLAGS += $(CC_FLAGS_CFI) 965 export CC_FLAGS_CFI 1005 export CC_FLAGS_CFI 966 endif 1006 endif 967 1007 968 # Architectures can define flags to add/remove << 969 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN << 970 export CC_FLAGS_FPU << 971 export CC_FLAGS_NO_FPU << 972 << 973 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) 1008 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) 974 # Set the minimal function alignment. Use the << 975 # -fmin-function-alignment if it is available, << 976 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME << 977 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT << 978 KBUILD_CFLAGS += -fmin-function-alignment=$(CO << 979 else << 980 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU 1009 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FUNCTION_ALIGNMENT) 981 endif 1010 endif 982 endif << 983 1011 984 # arch Makefile may override CC so keep this a 1012 # arch Makefile may override CC so keep this after arch Makefile is included 985 NOSTDINC_FLAGS += -nostdinc 1013 NOSTDINC_FLAGS += -nostdinc 986 1014 987 # To gain proper coverage for CONFIG_UBSAN_BOU !! 1015 # warn about C99 declaration after statement 988 # the kernel uses only C99 flexible arrays for !! 1016 KBUILD_CFLAGS += -Wdeclaration-after-statement 989 # arrays. Enforce this for everything that may !! 1017 990 # perform bounds checking. !! 1018 # Variable Length Arrays (VLAs) should not be used anywhere in the kernel 991 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl !! 1019 KBUILD_CFLAGS += -Wvla 992 !! 1020 993 #Currently, disable -Wstringop-overflow for GC !! 1021 # disable pointer signed / unsigned warnings in gcc 4.0 994 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW !! 1022 KBUILD_CFLAGS += -Wno-pointer-sign 995 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + !! 1023 >> 1024 # In order to make sure new function cast mismatches are not introduced >> 1025 # in the kernel (to avoid tripping CFI checking), the kernel should be >> 1026 # globally built with -Wcast-function-type. >> 1027 KBUILD_CFLAGS += $(call cc-option, -Wcast-function-type) >> 1028 >> 1029 # disable stringop warnings in gcc 8+ >> 1030 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) >> 1031 >> 1032 # We'll want to enable this eventually, but it's not going away for 5.7 at least >> 1033 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) >> 1034 >> 1035 # Another good warning that we'll want to enable eventually >> 1036 KBUILD_CFLAGS += $(call cc-disable-warning, restrict) >> 1037 >> 1038 # Enabled with W=2, disabled by default as noisy >> 1039 ifdef CONFIG_CC_IS_GCC >> 1040 KBUILD_CFLAGS += -Wno-maybe-uninitialized >> 1041 endif >> 1042 >> 1043 # The allocators already balk at large sizes, so silence the compiler >> 1044 # warnings for bounds checks involving those possible values. While >> 1045 # -Wno-alloc-size-larger-than would normally be used here, earlier versions >> 1046 # of gcc (<9.1) weirdly don't handle the option correctly when _other_ >> 1047 # warnings are produced (?!). Using -Walloc-size-larger-than=SIZE_MAX >> 1048 # doesn't work (as it is documented to), silently resolving to "0" prior to >> 1049 # version 9.1 (and producing an error more recently). Numeric values larger >> 1050 # than PTRDIFF_MAX also don't work prior to version 9.1, which are silently >> 1051 # ignored, continuing to default to PTRDIFF_MAX. So, left with no other >> 1052 # choice, we must perform a versioned check to disable this warning. >> 1053 # https://lore.kernel.org/lkml/20210824115859.187f272f@canb.auug.org.au >> 1054 KBUILD_CFLAGS-$(call gcc-min-version, 90100) += -Wno-alloc-size-larger-than >> 1055 KBUILD_CFLAGS += $(KBUILD_CFLAGS-y) $(CONFIG_CC_IMPLICIT_FALLTHROUGH) 996 1056 997 # disable invalid "can't wrap" optimizations f 1057 # disable invalid "can't wrap" optimizations for signed / pointers 998 KBUILD_CFLAGS += -fno-strict-overflow 1058 KBUILD_CFLAGS += -fno-strict-overflow 999 1059 1000 # Make sure -fstack-check isn't enabled (like 1060 # Make sure -fstack-check isn't enabled (like gentoo apparently did) 1001 KBUILD_CFLAGS += -fno-stack-check 1061 KBUILD_CFLAGS += -fno-stack-check 1002 1062 1003 # conserve stack if available 1063 # conserve stack if available 1004 ifdef CONFIG_CC_IS_GCC 1064 ifdef CONFIG_CC_IS_GCC 1005 KBUILD_CFLAGS += -fconserve-stack 1065 KBUILD_CFLAGS += -fconserve-stack 1006 endif 1066 endif 1007 1067 >> 1068 # Prohibit date/time macros, which would make the build non-deterministic >> 1069 KBUILD_CFLAGS += -Werror=date-time >> 1070 >> 1071 # enforce correct pointer usage >> 1072 KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) >> 1073 >> 1074 # Require designated initializers for all marked structures >> 1075 KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) >> 1076 1008 # change __FILE__ to the relative path from t 1077 # change __FILE__ to the relative path from the srctree 1009 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p 1078 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 1010 1079 1011 # include additional Makefiles when needed 1080 # include additional Makefiles when needed 1012 include-y := scripts/Ma 1081 include-y := scripts/Makefile.extrawarn 1013 include-$(CONFIG_DEBUG_INFO) += scripts/Ma 1082 include-$(CONFIG_DEBUG_INFO) += scripts/Makefile.debug 1014 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma << 1015 include-$(CONFIG_KASAN) += scripts/Ma 1083 include-$(CONFIG_KASAN) += scripts/Makefile.kasan 1016 include-$(CONFIG_KCSAN) += scripts/Ma 1084 include-$(CONFIG_KCSAN) += scripts/Makefile.kcsan 1017 include-$(CONFIG_KMSAN) += scripts/Ma 1085 include-$(CONFIG_KMSAN) += scripts/Makefile.kmsan 1018 include-$(CONFIG_UBSAN) += scripts/Ma 1086 include-$(CONFIG_UBSAN) += scripts/Makefile.ubsan 1019 include-$(CONFIG_KCOV) += scripts/Ma 1087 include-$(CONFIG_KCOV) += scripts/Makefile.kcov 1020 include-$(CONFIG_RANDSTRUCT) += scripts/Ma 1088 include-$(CONFIG_RANDSTRUCT) += scripts/Makefile.randstruct 1021 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma 1089 include-$(CONFIG_GCC_PLUGINS) += scripts/Makefile.gcc-plugins 1022 1090 1023 include $(addprefix $(srctree)/, $(include-y) 1091 include $(addprefix $(srctree)/, $(include-y)) 1024 1092 1025 # scripts/Makefile.gcc-plugins is intentional 1093 # scripts/Makefile.gcc-plugins is intentionally included last. 1026 # Do not add $(call cc-option,...) below this 1094 # Do not add $(call cc-option,...) below this line. When you build the kernel 1027 # from the clean source tree, the GCC plugins 1095 # from the clean source tree, the GCC plugins do not exist at this point. 1028 1096 1029 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS 1097 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS and RUSTFLAGS as the last assignments 1030 KBUILD_CPPFLAGS += $(KCPPFLAGS) 1098 KBUILD_CPPFLAGS += $(KCPPFLAGS) 1031 KBUILD_AFLAGS += $(KAFLAGS) 1099 KBUILD_AFLAGS += $(KAFLAGS) 1032 KBUILD_CFLAGS += $(KCFLAGS) 1100 KBUILD_CFLAGS += $(KCFLAGS) 1033 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) 1101 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) 1034 1102 1035 KBUILD_LDFLAGS_MODULE += --build-id=sha1 1103 KBUILD_LDFLAGS_MODULE += --build-id=sha1 1036 LDFLAGS_vmlinux += --build-id=sha1 1104 LDFLAGS_vmlinux += --build-id=sha1 1037 1105 1038 KBUILD_LDFLAGS += -z noexecstack 1106 KBUILD_LDFLAGS += -z noexecstack 1039 ifeq ($(CONFIG_LD_IS_BFD),y) 1107 ifeq ($(CONFIG_LD_IS_BFD),y) 1040 KBUILD_LDFLAGS += $(call ld-option,--no-warn 1108 KBUILD_LDFLAGS += $(call ld-option,--no-warn-rwx-segments) 1041 endif 1109 endif 1042 1110 1043 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1111 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1044 LDFLAGS_vmlinux += -X 1112 LDFLAGS_vmlinux += -X 1045 endif 1113 endif 1046 1114 1047 ifeq ($(CONFIG_RELR),y) 1115 ifeq ($(CONFIG_RELR),y) 1048 # ld.lld before 15 did not support -z pack-re !! 1116 LDFLAGS_vmlinux += --pack-dyn-relocs=relr --use-android-relr-tags 1049 LDFLAGS_vmlinux += $(call ld-option,--pack-dy << 1050 endif 1117 endif 1051 1118 1052 # We never want expected sections to be place 1119 # We never want expected sections to be placed heuristically by the 1053 # linker. All sections should be explicitly n 1120 # linker. All sections should be explicitly named in the linker script. 1054 ifdef CONFIG_LD_ORPHAN_WARN 1121 ifdef CONFIG_LD_ORPHAN_WARN 1055 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG 1122 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG_LD_ORPHAN_WARN_LEVEL) 1056 endif 1123 endif 1057 1124 1058 # Align the bit size of userspace programs wi 1125 # Align the bit size of userspace programs with the kernel 1059 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta 1126 KBUILD_USERCFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 1060 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta 1127 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 1061 1128 1062 # make the checker run with the right archite 1129 # make the checker run with the right architecture 1063 CHECKFLAGS += --arch=$(ARCH) 1130 CHECKFLAGS += --arch=$(ARCH) 1064 1131 1065 # insure the checker run with the right endia 1132 # insure the checker run with the right endianness 1066 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- 1133 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 1067 1134 1068 # the checker needs the correct machine size 1135 # the checker needs the correct machine size 1069 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1136 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1070 1137 1071 # Default kernel image to build when no speci 1138 # Default kernel image to build when no specific target is given. 1072 # KBUILD_IMAGE may be overruled on the comman 1139 # KBUILD_IMAGE may be overruled on the command line or 1073 # set in the environment 1140 # set in the environment 1074 # Also any assignments in arch/$(ARCH)/Makefi 1141 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 1075 # this default value 1142 # this default value 1076 export KBUILD_IMAGE ?= vmlinux 1143 export KBUILD_IMAGE ?= vmlinux 1077 1144 1078 # 1145 # 1079 # INSTALL_PATH specifies where to place the u 1146 # INSTALL_PATH specifies where to place the updated kernel and system map 1080 # images. Default is /boot, but you can set i 1147 # images. Default is /boot, but you can set it to other values 1081 export INSTALL_PATH ?= /boot 1148 export INSTALL_PATH ?= /boot 1082 1149 1083 # 1150 # 1084 # INSTALL_DTBS_PATH specifies a prefix for re 1151 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1085 # Like INSTALL_MOD_PATH, it isn't defined in 1152 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1086 # an argument if needed. Otherwise it default 1153 # an argument if needed. Otherwise it defaults to the kernel install path 1087 # 1154 # 1088 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d 1155 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1089 1156 1090 # 1157 # 1091 # INSTALL_MOD_PATH specifies a prefix to MODL 1158 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1092 # relocations required by build roots. This 1159 # relocations required by build roots. This is not defined in the 1093 # makefile but the argument can be passed to 1160 # makefile but the argument can be passed to make if needed. 1094 # 1161 # 1095 1162 1096 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 1163 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1097 export MODLIB 1164 export MODLIB 1098 1165 1099 PHONY += prepare0 1166 PHONY += prepare0 1100 1167 1101 export extmod_prefix = $(if $(KBUILD_EXTMOD), 1168 export extmod_prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/) 1102 export MODORDER := $(extmod_prefix)modules.or 1169 export MODORDER := $(extmod_prefix)modules.order 1103 export MODULES_NSDEPS := $(extmod_prefix)modu 1170 export MODULES_NSDEPS := $(extmod_prefix)modules.nsdeps 1104 1171 1105 ifeq ($(KBUILD_EXTMOD),) 1172 ifeq ($(KBUILD_EXTMOD),) 1106 1173 1107 build-dir := . 1174 build-dir := . 1108 clean-dirs := $(sort . Documentation \ 1175 clean-dirs := $(sort . Documentation \ 1109 $(patsubst %/,%,$(filter 1176 $(patsubst %/,%,$(filter %/, $(core-) \ 1110 $(drivers-) $(libs-)) 1177 $(drivers-) $(libs-)))) 1111 1178 1112 export ARCH_CORE := $(core-y) 1179 export ARCH_CORE := $(core-y) 1113 export ARCH_LIB := $(filter %/, $(lib 1180 export ARCH_LIB := $(filter %/, $(libs-y)) 1114 export ARCH_DRIVERS := $(drivers-y) $(dri 1181 export ARCH_DRIVERS := $(drivers-y) $(drivers-m) 1115 # Externally visible symbols (used by link-vm 1182 # Externally visible symbols (used by link-vmlinux.sh) 1116 1183 1117 KBUILD_VMLINUX_OBJS := ./built-in.a 1184 KBUILD_VMLINUX_OBJS := ./built-in.a 1118 ifdef CONFIG_MODULES 1185 ifdef CONFIG_MODULES 1119 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a 1186 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y))) 1120 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib 1187 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y)) 1121 else 1188 else 1122 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, 1189 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y)) 1123 endif 1190 endif 1124 1191 1125 export KBUILD_VMLINUX_LIBS 1192 export KBUILD_VMLINUX_LIBS 1126 export KBUILD_LDS := arch/$(SRCARCH) 1193 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 1127 1194 >> 1195 # Recurse until adjust_autoksyms.sh is satisfied >> 1196 PHONY += autoksyms_recursive 1128 ifdef CONFIG_TRIM_UNUSED_KSYMS 1197 ifdef CONFIG_TRIM_UNUSED_KSYMS 1129 # For the kernel to actually contain only the 1198 # For the kernel to actually contain only the needed exported symbols, 1130 # we have to build modules as well to determi 1199 # we have to build modules as well to determine what those symbols are. >> 1200 # (this can be evaluated only once include/config/auto.conf has been included) 1131 KBUILD_MODULES := 1 1201 KBUILD_MODULES := 1 >> 1202 >> 1203 autoksyms_recursive: $(build-dir) modules.order >> 1204 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ >> 1205 "$(MAKE) -f $(srctree)/Makefile autoksyms_recursive" 1132 endif 1206 endif 1133 1207 >> 1208 autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) >> 1209 >> 1210 quiet_cmd_autoksyms_h = GEN $@ >> 1211 cmd_autoksyms_h = mkdir -p $(dir $@); \ >> 1212 $(CONFIG_SHELL) $(srctree)/scripts/gen_autoksyms.sh $@ >> 1213 >> 1214 $(autoksyms_h): >> 1215 $(call cmd,autoksyms_h) >> 1216 1134 # '$(AR) mPi' needs 'T' to workaround the bug 1217 # '$(AR) mPi' needs 'T' to workaround the bug of llvm-ar <= 14 1135 quiet_cmd_ar_vmlinux.a = AR $@ 1218 quiet_cmd_ar_vmlinux.a = AR $@ 1136 cmd_ar_vmlinux.a = \ 1219 cmd_ar_vmlinux.a = \ 1137 rm -f $@; \ 1220 rm -f $@; \ 1138 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS 1221 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \ 1139 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) 1222 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) $@ $$($(AR) t $@ | grep -F -f $(srctree)/scripts/head-object-list.txt) 1140 1223 1141 targets += vmlinux.a 1224 targets += vmlinux.a 1142 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea !! 1225 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt autoksyms_recursive FORCE 1143 $(call if_changed,ar_vmlinux.a) 1226 $(call if_changed,ar_vmlinux.a) 1144 1227 1145 PHONY += vmlinux_o 1228 PHONY += vmlinux_o 1146 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) 1229 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) 1147 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1230 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.vmlinux_o 1148 1231 1149 vmlinux.o modules.builtin.modinfo modules.bui 1232 vmlinux.o modules.builtin.modinfo modules.builtin: vmlinux_o 1150 @: 1233 @: 1151 1234 1152 PHONY += vmlinux 1235 PHONY += vmlinux 1153 # LDFLAGS_vmlinux in the top Makefile defines 1236 # LDFLAGS_vmlinux in the top Makefile defines linker flags for the top vmlinux, 1154 # not for decompressors. LDFLAGS_vmlinux in a 1237 # not for decompressors. LDFLAGS_vmlinux in arch/*/boot/compressed/Makefile is 1155 # unrelated; the decompressors just happen to 1238 # unrelated; the decompressors just happen to have the same base name, 1156 # arch/*/boot/compressed/vmlinux. 1239 # arch/*/boot/compressed/vmlinux. 1157 # Export LDFLAGS_vmlinux only to scripts/Make 1240 # Export LDFLAGS_vmlinux only to scripts/Makefile.vmlinux. 1158 # 1241 # 1159 # _LDFLAGS_vmlinux is a workaround for the 'p 1242 # _LDFLAGS_vmlinux is a workaround for the 'private export' bug: 1160 # https://savannah.gnu.org/bugs/?61463 1243 # https://savannah.gnu.org/bugs/?61463 1161 # For Make > 4.4, the following simple code w 1244 # For Make > 4.4, the following simple code will work: 1162 # vmlinux: private export LDFLAGS_vmlinux := 1245 # vmlinux: private export LDFLAGS_vmlinux := $(LDFLAGS_vmlinux) 1163 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG 1246 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAGS_vmlinux) 1164 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ 1247 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_vmlinux) 1165 vmlinux: vmlinux.o $(KBUILD_LDS) modpost 1248 vmlinux: vmlinux.o $(KBUILD_LDS) modpost 1166 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1249 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.vmlinux 1167 1250 1168 # The actual objects are generated when desce 1251 # The actual objects are generated when descending, 1169 # make sure no implicit rule kicks in 1252 # make sure no implicit rule kicks in 1170 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ 1253 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)): . ; 1171 1254 1172 ifeq ($(origin KERNELRELEASE),file) 1255 ifeq ($(origin KERNELRELEASE),file) 1173 filechk_kernel.release = $(srctree)/scripts/s 1256 filechk_kernel.release = $(srctree)/scripts/setlocalversion $(srctree) 1174 else 1257 else 1175 filechk_kernel.release = echo $(KERNELRELEASE 1258 filechk_kernel.release = echo $(KERNELRELEASE) 1176 endif 1259 endif 1177 1260 1178 # Store (new) KERNELRELEASE string in include 1261 # Store (new) KERNELRELEASE string in include/config/kernel.release 1179 include/config/kernel.release: FORCE 1262 include/config/kernel.release: FORCE 1180 $(call filechk,kernel.release) 1263 $(call filechk,kernel.release) 1181 1264 1182 # Additional helpers built in scripts/ 1265 # Additional helpers built in scripts/ 1183 # Carefully list dependencies so we do not tr 1266 # Carefully list dependencies so we do not try to build scripts twice 1184 # in parallel 1267 # in parallel 1185 PHONY += scripts 1268 PHONY += scripts 1186 scripts: scripts_basic scripts_dtc 1269 scripts: scripts_basic scripts_dtc 1187 $(Q)$(MAKE) $(build)=$(@) 1270 $(Q)$(MAKE) $(build)=$(@) 1188 1271 1189 # Things we need to do before we recursively 1272 # Things we need to do before we recursively start building the kernel 1190 # or the modules are listed in "prepare". 1273 # or the modules are listed in "prepare". 1191 # A multi level approach is used. prepareN is 1274 # A multi level approach is used. prepareN is processed before prepareN-1. 1192 # archprepare is used in arch Makefiles and w 1275 # archprepare is used in arch Makefiles and when processed asm symlink, 1193 # version.h and scripts_basic is processed / 1276 # version.h and scripts_basic is processed / created. 1194 1277 1195 PHONY += prepare archprepare 1278 PHONY += prepare archprepare 1196 1279 1197 archprepare: outputmakefile archheaders archs 1280 archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \ 1198 asm-generic $(version_h) include/gene !! 1281 asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h \ 1199 include/generated/compile.h include/g 1282 include/generated/compile.h include/generated/autoconf.h remove-stale-files 1200 1283 1201 prepare0: archprepare 1284 prepare0: archprepare 1202 $(Q)$(MAKE) $(build)=scripts/mod 1285 $(Q)$(MAKE) $(build)=scripts/mod 1203 $(Q)$(MAKE) $(build)=. prepare 1286 $(Q)$(MAKE) $(build)=. prepare 1204 1287 1205 # All the preparing.. 1288 # All the preparing.. 1206 prepare: prepare0 1289 prepare: prepare0 1207 ifdef CONFIG_RUST 1290 ifdef CONFIG_RUST 1208 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip !! 1291 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust_is_available.sh -v 1209 $(Q)$(MAKE) $(build)=rust 1292 $(Q)$(MAKE) $(build)=rust 1210 endif 1293 endif 1211 1294 1212 PHONY += remove-stale-files 1295 PHONY += remove-stale-files 1213 remove-stale-files: 1296 remove-stale-files: 1214 $(Q)$(srctree)/scripts/remove-stale-f 1297 $(Q)$(srctree)/scripts/remove-stale-files 1215 1298 1216 # Support for using generic headers in asm-ge 1299 # Support for using generic headers in asm-generic 1217 asm-generic := -f $(srctree)/scripts/Makefile !! 1300 asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj 1218 1301 1219 PHONY += asm-generic uapi-asm-generic 1302 PHONY += asm-generic uapi-asm-generic 1220 asm-generic: uapi-asm-generic 1303 asm-generic: uapi-asm-generic 1221 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1304 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \ 1222 generic=include/asm-generic 1305 generic=include/asm-generic 1223 uapi-asm-generic: 1306 uapi-asm-generic: 1224 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1307 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \ 1225 generic=include/uapi/asm-generic 1308 generic=include/uapi/asm-generic 1226 1309 1227 # Generate some files 1310 # Generate some files 1228 # ------------------------------------------- 1311 # --------------------------------------------------------------------------- 1229 1312 1230 # KERNELRELEASE can change from a few differe 1313 # KERNELRELEASE can change from a few different places, meaning version.h 1231 # needs to be updated, so this check is force 1314 # needs to be updated, so this check is forced on all builds 1232 1315 1233 uts_len := 64 1316 uts_len := 64 1234 define filechk_utsrelease.h 1317 define filechk_utsrelease.h 1235 if [ `echo -n "$(KERNELRELEASE)" | wc 1318 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1236 echo '"$(KERNELRELEASE)" exceeds $( 1319 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1237 exit 1; 1320 exit 1; \ 1238 fi; 1321 fi; \ 1239 echo \#define UTS_RELEASE \"$(KERNELR 1322 echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" 1240 endef 1323 endef 1241 1324 1242 define filechk_version.h 1325 define filechk_version.h 1243 if [ $(SUBLEVEL) -gt 255 ]; then 1326 if [ $(SUBLEVEL) -gt 255 ]; then \ 1244 echo \#define LINUX_VERSION_C 1327 echo \#define LINUX_VERSION_CODE $(shell \ 1245 expr $(VERSION) \* 65536 + $( 1328 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + 255); \ 1246 else 1329 else \ 1247 echo \#define LINUX_VERSION_C 1330 echo \#define LINUX_VERSION_CODE $(shell \ 1248 expr $(VERSION) \* 65536 + $( 1331 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 1249 fi; 1332 fi; \ 1250 echo '#define KERNEL_VERSION(a,b,c) ( 1333 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + \ 1251 ((c) > 255 ? 255 : (c)))'; 1334 ((c) > 255 ? 255 : (c)))'; \ 1252 echo \#define LINUX_VERSION_MAJOR $(V 1335 echo \#define LINUX_VERSION_MAJOR $(VERSION); \ 1253 echo \#define LINUX_VERSION_PATCHLEVE 1336 echo \#define LINUX_VERSION_PATCHLEVEL $(PATCHLEVEL); \ 1254 echo \#define LINUX_VERSION_SUBLEVEL 1337 echo \#define LINUX_VERSION_SUBLEVEL $(SUBLEVEL) 1255 endef 1338 endef 1256 1339 1257 $(version_h): private PATCHLEVEL := $(or $(PA !! 1340 $(version_h): PATCHLEVEL := $(or $(PATCHLEVEL), 0) 1258 $(version_h): private SUBLEVEL := $(or $(SUBL !! 1341 $(version_h): SUBLEVEL := $(or $(SUBLEVEL), 0) 1259 $(version_h): FORCE 1342 $(version_h): FORCE 1260 $(call filechk,version.h) 1343 $(call filechk,version.h) 1261 1344 1262 include/generated/utsrelease.h: include/confi 1345 include/generated/utsrelease.h: include/config/kernel.release FORCE 1263 $(call filechk,utsrelease.h) 1346 $(call filechk,utsrelease.h) 1264 1347 1265 filechk_compile.h = $(srctree)/scripts/mkcomp 1348 filechk_compile.h = $(srctree)/scripts/mkcompile_h \ 1266 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION 1349 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION_TEXT)" "$(LD)" 1267 1350 1268 include/generated/compile.h: FORCE 1351 include/generated/compile.h: FORCE 1269 $(call filechk,compile.h) 1352 $(call filechk,compile.h) 1270 1353 1271 PHONY += headerdep 1354 PHONY += headerdep 1272 headerdep: 1355 headerdep: 1273 $(Q)find $(srctree)/include/ -name '* 1356 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1274 $(srctree)/scripts/headerdep.pl -I$(s 1357 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1275 1358 1276 # ------------------------------------------- 1359 # --------------------------------------------------------------------------- 1277 # Kernel headers 1360 # Kernel headers 1278 1361 1279 #Default location for installed headers 1362 #Default location for installed headers 1280 export INSTALL_HDR_PATH = $(objtree)/usr 1363 export INSTALL_HDR_PATH = $(objtree)/usr 1281 1364 1282 quiet_cmd_headers_install = INSTALL $(INSTALL 1365 quiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include 1283 cmd_headers_install = \ 1366 cmd_headers_install = \ 1284 mkdir -p $(INSTALL_HDR_PATH); \ 1367 mkdir -p $(INSTALL_HDR_PATH); \ 1285 rsync -mrl --include='*/' --include=' 1368 rsync -mrl --include='*/' --include='*\.h' --exclude='*' \ 1286 usr/include $(INSTALL_HDR_PATH) 1369 usr/include $(INSTALL_HDR_PATH) 1287 1370 1288 PHONY += headers_install 1371 PHONY += headers_install 1289 headers_install: headers 1372 headers_install: headers 1290 $(call cmd,headers_install) 1373 $(call cmd,headers_install) 1291 1374 1292 PHONY += archheaders archscripts 1375 PHONY += archheaders archscripts 1293 1376 1294 hdr-inst := -f $(srctree)/scripts/Makefile.he 1377 hdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj 1295 1378 1296 PHONY += headers 1379 PHONY += headers 1297 headers: $(version_h) scripts_unifdef uapi-as 1380 headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts 1298 $(if $(filter um, $(SRCARCH)), $(erro 1381 $(if $(filter um, $(SRCARCH)), $(error Headers not exportable for UML)) 1299 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1382 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1300 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC 1383 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi 1301 1384 1302 ifdef CONFIG_HEADERS_INSTALL 1385 ifdef CONFIG_HEADERS_INSTALL 1303 prepare: headers 1386 prepare: headers 1304 endif 1387 endif 1305 1388 1306 PHONY += scripts_unifdef 1389 PHONY += scripts_unifdef 1307 scripts_unifdef: scripts_basic 1390 scripts_unifdef: scripts_basic 1308 $(Q)$(MAKE) $(build)=scripts scripts/ 1391 $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1309 1392 1310 # ------------------------------------------- 1393 # --------------------------------------------------------------------------- 1311 # Install 1394 # Install 1312 1395 1313 # Many distributions have the custom install 1396 # Many distributions have the custom install script, /sbin/installkernel. 1314 # If DKMS is installed, 'make install' will e 1397 # If DKMS is installed, 'make install' will eventually recurse back 1315 # to this Makefile to build and install exter 1398 # to this Makefile to build and install external modules. 1316 # Cancel sub_make_done so that options such a 1399 # Cancel sub_make_done so that options such as M=, V=, etc. are parsed. 1317 1400 1318 quiet_cmd_install = INSTALL $(INSTALL_PATH) 1401 quiet_cmd_install = INSTALL $(INSTALL_PATH) 1319 cmd_install = unset sub_make_done; $(sr 1402 cmd_install = unset sub_make_done; $(srctree)/scripts/install.sh 1320 1403 1321 # ------------------------------------------- 1404 # --------------------------------------------------------------------------- 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 1405 # Tools 1331 1406 1332 ifdef CONFIG_OBJTOOL 1407 ifdef CONFIG_OBJTOOL 1333 prepare: tools/objtool 1408 prepare: tools/objtool 1334 endif 1409 endif 1335 1410 1336 ifdef CONFIG_BPF 1411 ifdef CONFIG_BPF 1337 ifdef CONFIG_DEBUG_INFO_BTF 1412 ifdef CONFIG_DEBUG_INFO_BTF 1338 prepare: tools/bpf/resolve_btfids 1413 prepare: tools/bpf/resolve_btfids 1339 endif 1414 endif 1340 endif 1415 endif 1341 1416 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 1417 PHONY += resolve_btfids_clean 1349 1418 1350 resolve_btfids_O = $(abspath $(objtree))/tool 1419 resolve_btfids_O = $(abspath $(objtree))/tools/bpf/resolve_btfids 1351 1420 1352 # tools/bpf/resolve_btfids directory might no 1421 # tools/bpf/resolve_btfids directory might not exist 1353 # in output directory, skip its clean in that 1422 # in output directory, skip its clean in that case 1354 resolve_btfids_clean: 1423 resolve_btfids_clean: 1355 ifneq ($(wildcard $(resolve_btfids_O)),) 1424 ifneq ($(wildcard $(resolve_btfids_O)),) 1356 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ 1425 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/resolve_btfids O=$(resolve_btfids_O) clean 1357 endif 1426 endif 1358 1427 1359 # Clear a bunch of variables before executing 1428 # Clear a bunch of variables before executing the submake 1360 ifeq ($(quiet),silent_) 1429 ifeq ($(quiet),silent_) 1361 tools_silent=s 1430 tools_silent=s 1362 endif 1431 endif 1363 1432 1364 tools/: FORCE 1433 tools/: FORCE 1365 $(Q)mkdir -p $(objtree)/tools 1434 $(Q)mkdir -p $(objtree)/tools 1366 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too 1435 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ 1367 1436 1368 tools/%: FORCE 1437 tools/%: FORCE 1369 $(Q)mkdir -p $(objtree)/tools 1438 $(Q)mkdir -p $(objtree)/tools 1370 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too 1439 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ $* 1371 1440 1372 # ------------------------------------------- 1441 # --------------------------------------------------------------------------- 1373 # Kernel selftest 1442 # Kernel selftest 1374 1443 1375 PHONY += kselftest 1444 PHONY += kselftest 1376 kselftest: headers 1445 kselftest: headers 1377 $(Q)$(MAKE) -C $(srctree)/tools/testi 1446 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 1378 1447 1379 kselftest-%: headers FORCE 1448 kselftest-%: headers FORCE 1380 $(Q)$(MAKE) -C $(srctree)/tools/testi 1449 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $* 1381 1450 1382 PHONY += kselftest-merge 1451 PHONY += kselftest-merge 1383 kselftest-merge: 1452 kselftest-merge: 1384 $(if $(wildcard $(objtree)/.config),, 1453 $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1385 $(Q)find $(srctree)/tools/testing/sel !! 1454 $(Q)find $(srctree)/tools/testing/selftests -name config | \ 1386 xargs $(srctree)/scripts/kcon !! 1455 xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config 1387 $(Q)$(MAKE) -f $(srctree)/Makefile ol 1456 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1388 1457 1389 # ------------------------------------------- 1458 # --------------------------------------------------------------------------- 1390 # Devicetree files 1459 # Devicetree files 1391 1460 1392 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ 1461 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 1393 dtstree := arch/$(SRCARCH)/boot/dts 1462 dtstree := arch/$(SRCARCH)/boot/dts 1394 endif 1463 endif 1395 1464 1396 ifneq ($(dtstree),) 1465 ifneq ($(dtstree),) 1397 1466 1398 %.dtb: dtbs_prepare 1467 %.dtb: dtbs_prepare 1399 $(Q)$(MAKE) $(build)=$(dtstree) $(dts 1468 $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1400 1469 1401 %.dtbo: dtbs_prepare 1470 %.dtbo: dtbs_prepare 1402 $(Q)$(MAKE) $(build)=$(dtstree) $(dts 1471 $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1403 1472 1404 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ 1473 PHONY += dtbs dtbs_prepare dtbs_install dtbs_check 1405 dtbs: dtbs_prepare 1474 dtbs: dtbs_prepare 1406 $(Q)$(MAKE) $(build)=$(dtstree) need- !! 1475 $(Q)$(MAKE) $(build)=$(dtstree) 1407 1476 1408 # include/config/kernel.release is actually n 1477 # include/config/kernel.release is actually needed when installing DTBs because 1409 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) 1478 # INSTALL_DTBS_PATH contains $(KERNELRELEASE). However, we do not want to make 1410 # dtbs_install depend on it as dtbs_install m 1479 # dtbs_install depend on it as dtbs_install may run as root. 1411 dtbs_prepare: include/config/kernel.release s 1480 dtbs_prepare: include/config/kernel.release scripts_dtc 1412 1481 1413 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), 1482 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),) 1414 export CHECK_DTBS=y 1483 export CHECK_DTBS=y 1415 endif 1484 endif 1416 1485 1417 ifneq ($(CHECK_DTBS),) 1486 ifneq ($(CHECK_DTBS),) 1418 dtbs_prepare: dt_binding_schemas !! 1487 dtbs_prepare: dt_binding_check 1419 endif 1488 endif 1420 1489 1421 dtbs_check: dtbs 1490 dtbs_check: dtbs 1422 1491 1423 dtbs_install: 1492 dtbs_install: 1424 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1493 $(Q)$(MAKE) $(dtbinst)=$(dtstree) dst=$(INSTALL_DTBS_PATH) 1425 1494 1426 ifdef CONFIG_OF_EARLY_FLATTREE 1495 ifdef CONFIG_OF_EARLY_FLATTREE 1427 all: dtbs 1496 all: dtbs 1428 endif 1497 endif 1429 1498 1430 endif 1499 endif 1431 1500 1432 PHONY += scripts_dtc 1501 PHONY += scripts_dtc 1433 scripts_dtc: scripts_basic 1502 scripts_dtc: scripts_basic 1434 $(Q)$(MAKE) $(build)=scripts/dtc 1503 $(Q)$(MAKE) $(build)=scripts/dtc 1435 1504 1436 ifneq ($(filter dt_binding_check, $(MAKECMDGO 1505 ifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),) 1437 export CHECK_DTBS=y !! 1506 export CHECK_DT_BINDING=y 1438 endif 1507 endif 1439 1508 1440 PHONY += dt_binding_check dt_binding_schemas !! 1509 PHONY += dt_binding_check 1441 dt_binding_check: dt_binding_schemas scripts_ !! 1510 dt_binding_check: scripts_dtc 1442 $(Q)$(MAKE) $(build)=Documentation/de << 1443 << 1444 dt_binding_schemas: << 1445 $(Q)$(MAKE) $(build)=Documentation/de 1511 $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings 1446 1512 1447 PHONY += dt_compatible_check 1513 PHONY += dt_compatible_check 1448 dt_compatible_check: dt_binding_schemas !! 1514 dt_compatible_check: dt_binding_check 1449 $(Q)$(MAKE) $(build)=Documentation/de 1515 $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings $@ 1450 1516 1451 # ------------------------------------------- 1517 # --------------------------------------------------------------------------- 1452 # Modules 1518 # Modules 1453 1519 1454 ifdef CONFIG_MODULES 1520 ifdef CONFIG_MODULES 1455 1521 1456 # By default, build modules as well 1522 # By default, build modules as well 1457 1523 1458 all: modules 1524 all: modules 1459 1525 1460 # When we're building modules with modversion 1526 # When we're building modules with modversions, we need to consider 1461 # the built-in objects during the descend as 1527 # the built-in objects during the descend as well, in order to 1462 # make sure the checksums are up to date befo 1528 # make sure the checksums are up to date before we record them. 1463 ifdef CONFIG_MODVERSIONS 1529 ifdef CONFIG_MODVERSIONS 1464 KBUILD_BUILTIN := 1 1530 KBUILD_BUILTIN := 1 1465 endif 1531 endif 1466 1532 1467 # Build modules 1533 # Build modules 1468 # 1534 # 1469 1535 1470 # *.ko are usually independent of vmlinux, bu 1536 # *.ko are usually independent of vmlinux, but CONFIG_DEBUG_INFO_BTF_MODULES 1471 # is an exception. 1537 # is an exception. 1472 ifdef CONFIG_DEBUG_INFO_BTF_MODULES 1538 ifdef CONFIG_DEBUG_INFO_BTF_MODULES 1473 KBUILD_BUILTIN := 1 1539 KBUILD_BUILTIN := 1 1474 modules: vmlinux 1540 modules: vmlinux 1475 endif 1541 endif 1476 1542 1477 modules: modules_prepare 1543 modules: modules_prepare 1478 1544 1479 # Target to prepare building external modules 1545 # Target to prepare building external modules 1480 modules_prepare: prepare 1546 modules_prepare: prepare 1481 $(Q)$(MAKE) $(build)=scripts scripts/ 1547 $(Q)$(MAKE) $(build)=scripts scripts/module.lds 1482 1548 >> 1549 export modules_sign_only := >> 1550 >> 1551 ifeq ($(CONFIG_MODULE_SIG),y) >> 1552 PHONY += modules_sign >> 1553 modules_sign: modules_install >> 1554 @: >> 1555 >> 1556 # modules_sign is a subset of modules_install. >> 1557 # 'make modules_install modules_sign' is equivalent to 'make modules_install'. >> 1558 ifeq ($(filter modules_install,$(MAKECMDGOALS)),) >> 1559 modules_sign_only := y >> 1560 endif >> 1561 endif >> 1562 >> 1563 modinst_pre := >> 1564 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) >> 1565 modinst_pre := __modinst_pre >> 1566 endif >> 1567 >> 1568 modules_install: $(modinst_pre) >> 1569 PHONY += __modinst_pre >> 1570 __modinst_pre: >> 1571 @rm -rf $(MODLIB)/kernel >> 1572 @rm -f $(MODLIB)/source >> 1573 @mkdir -p $(MODLIB)/kernel >> 1574 @ln -s $(abspath $(srctree)) $(MODLIB)/source >> 1575 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ >> 1576 rm -f $(MODLIB)/build ; \ >> 1577 ln -s $(CURDIR) $(MODLIB)/build ; \ >> 1578 fi >> 1579 @sed 's:^\(.*\)\.o$$:kernel/\1.ko:' modules.order > $(MODLIB)/modules.order >> 1580 @cp -f modules.builtin $(MODLIB)/ >> 1581 @cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/ >> 1582 1483 endif # CONFIG_MODULES 1583 endif # CONFIG_MODULES 1484 1584 1485 ### 1585 ### 1486 # Cleaning is done on three levels. 1586 # Cleaning is done on three levels. 1487 # make clean Delete most generated files 1587 # make clean Delete most generated files 1488 # Leave enough to build extern 1588 # Leave enough to build external modules 1489 # make mrproper Delete the current configura 1589 # make mrproper Delete the current configuration, and all generated files 1490 # make distclean Remove editor backup files, 1590 # make distclean Remove editor backup files, patch leftover files and the like 1491 1591 1492 # Directories & files removed with 'make clea 1592 # Directories & files removed with 'make clean' 1493 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1593 CLEAN_FILES += include/ksym vmlinux.symvers modules-only.symvers \ 1494 modules.builtin modules.builti 1594 modules.builtin modules.builtin.modinfo modules.nsdeps \ 1495 modules.builtin.ranges vmlinux !! 1595 compile_commands.json .thinlto-cache rust/test rust/doc \ 1496 compile_commands.json rust/tes << 1497 rust-project.json .vmlinux.obj 1596 rust-project.json .vmlinux.objs .vmlinux.export.c 1498 1597 1499 # Directories & files removed with 'make mrpr 1598 # Directories & files removed with 'make mrproper' 1500 MRPROPER_FILES += include/config include/gene 1599 MRPROPER_FILES += include/config include/generated \ 1501 arch/$(SRCARCH)/include/gen 1600 arch/$(SRCARCH)/include/generated .objdiff \ 1502 debian snap tar-install PKG !! 1601 debian snap tar-install \ 1503 .config .config.old .versio 1602 .config .config.old .version \ 1504 Module.symvers \ 1603 Module.symvers \ 1505 certs/signing_key.pem \ 1604 certs/signing_key.pem \ 1506 certs/x509.genkey \ 1605 certs/x509.genkey \ 1507 vmlinux-gdb.py \ 1606 vmlinux-gdb.py \ 1508 rpmbuild \ !! 1607 *.spec rpmbuild \ 1509 rust/libmacros.so 1608 rust/libmacros.so 1510 1609 1511 # clean - Delete most, but leave enough to bu 1610 # clean - Delete most, but leave enough to build external modules 1512 # 1611 # 1513 clean: private rm-files := $(CLEAN_FILES) !! 1612 clean: rm-files := $(CLEAN_FILES) 1514 1613 1515 PHONY += archclean vmlinuxclean 1614 PHONY += archclean vmlinuxclean 1516 1615 1517 vmlinuxclean: 1616 vmlinuxclean: 1518 $(Q)$(CONFIG_SHELL) $(srctree)/script 1617 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1519 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f 1618 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1520 1619 1521 clean: archclean vmlinuxclean resolve_btfids_ 1620 clean: archclean vmlinuxclean resolve_btfids_clean 1522 1621 1523 # mrproper - Delete all generated files, incl 1622 # mrproper - Delete all generated files, including .config 1524 # 1623 # 1525 mrproper: private rm-files := $(MRPROPER_FILE !! 1624 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1526 mrproper-dirs := $(addprefix _mrproper_, 1625 mrproper-dirs := $(addprefix _mrproper_,scripts) 1527 1626 1528 PHONY += $(mrproper-dirs) mrproper 1627 PHONY += $(mrproper-dirs) mrproper 1529 $(mrproper-dirs): 1628 $(mrproper-dirs): 1530 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1629 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1531 1630 1532 mrproper: clean $(mrproper-dirs) 1631 mrproper: clean $(mrproper-dirs) 1533 $(call cmd,rmfiles) 1632 $(call cmd,rmfiles) 1534 @find . $(RCS_FIND_IGNORE) \ 1633 @find . $(RCS_FIND_IGNORE) \ 1535 \( -name '*.rmeta' \) \ 1634 \( -name '*.rmeta' \) \ 1536 -type f -print | xargs rm -f 1635 -type f -print | xargs rm -f 1537 1636 1538 # distclean 1637 # distclean 1539 # 1638 # 1540 PHONY += distclean 1639 PHONY += distclean 1541 1640 1542 distclean: mrproper 1641 distclean: mrproper 1543 @find . $(RCS_FIND_IGNORE) \ 1642 @find . $(RCS_FIND_IGNORE) \ 1544 \( -name '*.orig' -o -name '* 1643 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1545 -o -name '*.bak' -o -name '#* 1644 -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1546 -o -name 'core' -o -name tags 1645 -o -name 'core' -o -name tags -o -name TAGS -o -name 'cscope*' \ 1547 -o -name GPATH -o -name GRTAG 1646 -o -name GPATH -o -name GRTAGS -o -name GSYMS -o -name GTAGS \) \ 1548 -type f -print | xargs rm -f 1647 -type f -print | xargs rm -f 1549 1648 1550 1649 1551 # Packaging of the kernel to various formats 1650 # Packaging of the kernel to various formats 1552 # ------------------------------------------- 1651 # --------------------------------------------------------------------------- 1553 1652 1554 %src-pkg: FORCE 1653 %src-pkg: FORCE 1555 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1654 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1556 %pkg: include/config/kernel.release FORCE 1655 %pkg: include/config/kernel.release FORCE 1557 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1656 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1558 1657 1559 # Brief documentation of the typical targets 1658 # Brief documentation of the typical targets used 1560 # ------------------------------------------- 1659 # --------------------------------------------------------------------------- 1561 1660 1562 boards := $(wildcard $(srctree)/arch/$(SRCARC 1661 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1563 boards := $(sort $(notdir $(boards))) 1662 boards := $(sort $(notdir $(boards))) 1564 board-dirs := $(dir $(wildcard $(srctree)/arc 1663 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1565 board-dirs := $(sort $(notdir $(board-dirs:/= 1664 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1566 1665 1567 PHONY += help 1666 PHONY += help 1568 help: 1667 help: 1569 @echo 'Cleaning targets:' 1668 @echo 'Cleaning targets:' 1570 @echo ' clean - Remove mo 1669 @echo ' clean - Remove most generated files but keep the config and' 1571 @echo ' enough bu 1670 @echo ' enough build support to build external modules' 1572 @echo ' mrproper - Remove al 1671 @echo ' mrproper - Remove all generated files + config + various backup files' 1573 @echo ' distclean - mrproper 1672 @echo ' distclean - mrproper + remove editor backup and patch files' 1574 @echo '' 1673 @echo '' >> 1674 @echo 'Configuration targets:' 1575 @$(MAKE) -f $(srctree)/scripts/kconfi 1675 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1576 @echo '' 1676 @echo '' 1577 @echo 'Other generic targets:' 1677 @echo 'Other generic targets:' 1578 @echo ' all - Build all 1678 @echo ' all - Build all targets marked with [*]' 1579 @echo '* vmlinux - Build the 1679 @echo '* vmlinux - Build the bare kernel' 1580 @echo '* modules - Build all 1680 @echo '* modules - Build all modules' 1581 @echo ' modules_install - Install a 1681 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1582 @echo ' vdso_install - Install u << 1583 @echo ' dir/ - Build all 1682 @echo ' dir/ - Build all files in dir and below' 1584 @echo ' dir/file.[ois] - Build spe 1683 @echo ' dir/file.[ois] - Build specified target only' 1585 @echo ' dir/file.ll - Build the 1684 @echo ' dir/file.ll - Build the LLVM assembly file' 1586 @echo ' (requires 1685 @echo ' (requires compiler support for LLVM assembly generation)' 1587 @echo ' dir/file.lst - Build spe 1686 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1588 @echo ' (requires 1687 @echo ' (requires a recent binutils and recent build (System.map))' 1589 @echo ' dir/file.ko - Build mod 1688 @echo ' dir/file.ko - Build module including final link' 1590 @echo ' modules_prepare - Set up fo 1689 @echo ' modules_prepare - Set up for building external modules' 1591 @echo ' tags/TAGS - Generate 1690 @echo ' tags/TAGS - Generate tags file for editors' 1592 @echo ' cscope - Generate 1691 @echo ' cscope - Generate cscope index' 1593 @echo ' gtags - Generate 1692 @echo ' gtags - Generate GNU GLOBAL index' 1594 @echo ' kernelrelease - Output th 1693 @echo ' kernelrelease - Output the release version string (use with make -s)' 1595 @echo ' kernelversion - Output th 1694 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1596 @echo ' image_name - Output th 1695 @echo ' image_name - Output the image name (use with make -s)' 1597 @echo ' headers_install - Install s 1696 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1598 echo ' (default: 1697 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1599 echo '' 1698 echo '' 1600 @echo 'Static analysers:' 1699 @echo 'Static analysers:' 1601 @echo ' checkstack - Generate !! 1700 @echo ' checkstack - Generate a list of stack hogs' 1602 @echo ' with a st << 1603 @echo ' versioncheck - Sanity ch 1701 @echo ' versioncheck - Sanity check on version.h usage' 1604 @echo ' includecheck - Check for 1702 @echo ' includecheck - Check for duplicate included header files' 1605 @echo ' export_report - List the 1703 @echo ' export_report - List the usages of all exported symbols' 1606 @echo ' headerdep - Detect in 1704 @echo ' headerdep - Detect inclusion cycles in headers' 1607 @echo ' coccicheck - Check wit 1705 @echo ' coccicheck - Check with Coccinelle' 1608 @echo ' clang-analyzer - Check wit 1706 @echo ' clang-analyzer - Check with clang static analyzer' 1609 @echo ' clang-tidy - Check wit 1707 @echo ' clang-tidy - Check with clang-tidy' 1610 @echo '' 1708 @echo '' 1611 @echo 'Tools:' 1709 @echo 'Tools:' 1612 @echo ' nsdeps - Generate 1710 @echo ' nsdeps - Generate missing symbol namespace dependencies' 1613 @echo '' 1711 @echo '' 1614 @echo 'Kernel selftest:' 1712 @echo 'Kernel selftest:' 1615 @echo ' kselftest - Build a 1713 @echo ' kselftest - Build and run kernel selftest' 1616 @echo ' Build, 1714 @echo ' Build, install, and boot kernel before' 1617 @echo ' running 1715 @echo ' running kselftest on it' 1618 @echo ' Run as 1716 @echo ' Run as root for full coverage' 1619 @echo ' kselftest-all - Build k 1717 @echo ' kselftest-all - Build kernel selftest' 1620 @echo ' kselftest-install - Build a 1718 @echo ' kselftest-install - Build and install kernel selftest' 1621 @echo ' kselftest-clean - Remove 1719 @echo ' kselftest-clean - Remove all generated kselftest files' 1622 @echo ' kselftest-merge - Merge a 1720 @echo ' kselftest-merge - Merge all the config dependencies of' 1623 @echo ' kselfte 1721 @echo ' kselftest to existing .config.' 1624 @echo '' 1722 @echo '' 1625 @echo 'Rust targets:' 1723 @echo 'Rust targets:' 1626 @echo ' rustavailable - Checks wh 1724 @echo ' rustavailable - Checks whether the Rust toolchain is' 1627 @echo ' available 1725 @echo ' available and, if not, explains why.' 1628 @echo ' rustfmt - Reformat 1726 @echo ' rustfmt - Reformat all the Rust code in the kernel' 1629 @echo ' rustfmtcheck - Checks if 1727 @echo ' rustfmtcheck - Checks if all the Rust code in the kernel' 1630 @echo ' is format 1728 @echo ' is formatted, printing a diff otherwise.' 1631 @echo ' rustdoc - Generate 1729 @echo ' rustdoc - Generate Rust documentation' 1632 @echo ' (requires 1730 @echo ' (requires kernel .config)' 1633 @echo ' rusttest - Runs the 1731 @echo ' rusttest - Runs the Rust tests' 1634 @echo ' (requires 1732 @echo ' (requires kernel .config; downloads external repos)' 1635 @echo ' rust-analyzer - Generate 1733 @echo ' rust-analyzer - Generate rust-project.json rust-analyzer support file' 1636 @echo ' (requires 1734 @echo ' (requires kernel .config)' 1637 @echo ' dir/file.[os] - Build spe 1735 @echo ' dir/file.[os] - Build specified target only' 1638 @echo ' dir/file.rsi - Build mac 1736 @echo ' dir/file.rsi - Build macro expanded source, similar to C preprocessing.' 1639 @echo ' Run with 1737 @echo ' Run with RUSTFMT=n to skip reformatting if needed.' 1640 @echo ' The outpu 1738 @echo ' The output is not intended to be compilable.' 1641 @echo ' dir/file.ll - Build the 1739 @echo ' dir/file.ll - Build the LLVM assembly file' 1642 @echo '' 1740 @echo '' 1643 @$(if $(dtstree), \ 1741 @$(if $(dtstree), \ 1644 echo 'Devicetree:'; \ 1742 echo 'Devicetree:'; \ 1645 echo '* dtbs - !! 1743 echo '* dtbs - Build device tree blobs for enabled boards'; \ 1646 echo ' dtbs_install - !! 1744 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ 1647 echo ' dt_binding_check - !! 1745 echo ' dt_binding_check - Validate device tree binding documents'; \ 1648 echo ' dt_binding_schemas - !! 1746 echo ' dtbs_check - Validate device tree source files';\ 1649 echo ' dtbs_check - << 1650 echo '') 1747 echo '') 1651 1748 1652 @echo 'Userspace tools targets:' 1749 @echo 'Userspace tools targets:' 1653 @echo ' use "make tools/help"' 1750 @echo ' use "make tools/help"' 1654 @echo ' or "cd tools; make help"' 1751 @echo ' or "cd tools; make help"' 1655 @echo '' 1752 @echo '' 1656 @echo 'Kernel packaging:' 1753 @echo 'Kernel packaging:' 1657 @$(MAKE) -f $(srctree)/scripts/Makefi 1754 @$(MAKE) -f $(srctree)/scripts/Makefile.package help 1658 @echo '' 1755 @echo '' 1659 @echo 'Documentation targets:' 1756 @echo 'Documentation targets:' 1660 @$(MAKE) -f $(srctree)/Documentation/ 1757 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1661 @echo '' 1758 @echo '' 1662 @echo 'Architecture-specific targets !! 1759 @echo 'Architecture specific targets ($(SRCARCH)):' 1663 @$(or $(archhelp),\ 1760 @$(or $(archhelp),\ 1664 echo ' No architecture-speci !! 1761 echo ' No architecture specific help defined for $(SRCARCH)') 1665 @echo '' 1762 @echo '' 1666 @$(if $(boards), \ 1763 @$(if $(boards), \ 1667 $(foreach b, $(boards), \ 1764 $(foreach b, $(boards), \ 1668 printf " %-27s - Build for % 1765 printf " %-27s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1669 echo '') 1766 echo '') 1670 @$(if $(board-dirs), \ 1767 @$(if $(board-dirs), \ 1671 $(foreach b, $(board-dirs), \ 1768 $(foreach b, $(board-dirs), \ 1672 printf " %-16s - Show %s-spe 1769 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1673 printf " %-16s - Show all of 1770 printf " %-16s - Show all of the above\\n" help-boards; \ 1674 echo '') 1771 echo '') 1675 1772 1676 @echo ' make V=n [targets] 1: ver 1773 @echo ' make V=n [targets] 1: verbose build' 1677 @echo ' 2: giv 1774 @echo ' 2: give reason for rebuild of target' 1678 @echo ' V=1 an 1775 @echo ' V=1 and V=2 can be combined with V=12' 1679 @echo ' make O=dir [targets] Locate 1776 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1680 @echo ' make C=1 [targets] Check 1777 @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK' 1681 @echo ' (spars 1778 @echo ' (sparse by default)' 1682 @echo ' make C=2 [targets] Force 1779 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1683 @echo ' make RECORDMCOUNT_WARN=1 [t 1780 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1684 @echo ' make W=n [targets] Enable !! 1781 @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where' 1685 @echo ' 1: warnings w 1782 @echo ' 1: warnings which may be relevant and do not occur too often' 1686 @echo ' 2: warnings w 1783 @echo ' 2: warnings which occur quite often but may still be relevant' 1687 @echo ' 3: more obscu 1784 @echo ' 3: more obscure warnings, can most likely be ignored' 1688 @echo ' c: extra chec << 1689 @echo ' e: warnings a 1785 @echo ' e: warnings are being treated as errors' 1690 @echo ' Multiple leve 1786 @echo ' Multiple levels can be combined with W=12 or W=123' 1691 @$(if $(dtstree), \ 1787 @$(if $(dtstree), \ 1692 echo ' make CHECK_DTBS=1 [ta 1788 echo ' make CHECK_DTBS=1 [targets] Check all generated dtb files against schema'; \ 1693 echo ' This can be ap 1789 echo ' This can be applied both to "dtbs" and to individual "foo.dtb" targets' ; \ 1694 ) 1790 ) 1695 @echo '' 1791 @echo '' 1696 @echo 'Execute "make" or "make all" 1792 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1697 @echo 'For further info see the ./RE 1793 @echo 'For further info see the ./README file' 1698 1794 1699 1795 1700 help-board-dirs := $(addprefix help-,$(board- 1796 help-board-dirs := $(addprefix help-,$(board-dirs)) 1701 1797 1702 help-boards: $(help-board-dirs) 1798 help-boards: $(help-board-dirs) 1703 1799 1704 boards-per-dir = $(sort $(notdir $(wildcard $ 1800 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1705 1801 1706 $(help-board-dirs): help-%: 1802 $(help-board-dirs): help-%: 1707 @echo 'Architecture-specific targets !! 1803 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1708 @$(if $(boards-per-dir), \ 1804 @$(if $(boards-per-dir), \ 1709 $(foreach b, $(boards-per-dir 1805 $(foreach b, $(boards-per-dir), \ 1710 printf " %-24s - Build for % 1806 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1711 echo '') 1807 echo '') 1712 1808 1713 1809 1714 # Documentation targets 1810 # Documentation targets 1715 # ------------------------------------------- 1811 # --------------------------------------------------------------------------- 1716 DOC_TARGETS := xmldocs latexdocs pdfdocs html 1812 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1717 linkcheckdocs dochelp refcheck 1813 linkcheckdocs dochelp refcheckdocs texinfodocs infodocs 1718 PHONY += $(DOC_TARGETS) 1814 PHONY += $(DOC_TARGETS) 1719 $(DOC_TARGETS): 1815 $(DOC_TARGETS): 1720 $(Q)$(MAKE) $(build)=Documentation $@ 1816 $(Q)$(MAKE) $(build)=Documentation $@ 1721 1817 1722 1818 1723 # Rust targets 1819 # Rust targets 1724 # ------------------------------------------- 1820 # --------------------------------------------------------------------------- 1725 1821 1726 # "Is Rust available?" target 1822 # "Is Rust available?" target 1727 PHONY += rustavailable 1823 PHONY += rustavailable 1728 rustavailable: 1824 rustavailable: 1729 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip !! 1825 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/rust_is_available.sh -v && echo "Rust is available!" 1730 1826 1731 # Documentation target 1827 # Documentation target 1732 # 1828 # 1733 # Using the singular to avoid running afoul o 1829 # Using the singular to avoid running afoul of `no-dot-config-targets`. 1734 PHONY += rustdoc 1830 PHONY += rustdoc 1735 rustdoc: prepare 1831 rustdoc: prepare 1736 $(Q)$(MAKE) $(build)=rust $@ 1832 $(Q)$(MAKE) $(build)=rust $@ 1737 1833 1738 # Testing target 1834 # Testing target 1739 PHONY += rusttest 1835 PHONY += rusttest 1740 rusttest: prepare 1836 rusttest: prepare 1741 $(Q)$(MAKE) $(build)=rust $@ 1837 $(Q)$(MAKE) $(build)=rust $@ 1742 1838 1743 # Formatting targets 1839 # Formatting targets 1744 PHONY += rustfmt rustfmtcheck 1840 PHONY += rustfmt rustfmtcheck 1745 1841 1746 # We skip `rust/alloc` since we want to minim 1842 # We skip `rust/alloc` since we want to minimize the diff w.r.t. upstream. 1747 # 1843 # 1748 # We match using absolute paths since `find` 1844 # We match using absolute paths since `find` does not resolve them 1749 # when matching, which is a problem when e.g. 1845 # when matching, which is a problem when e.g. `srctree` is `..`. 1750 # We `grep` afterwards in order to remove the 1846 # We `grep` afterwards in order to remove the directory entry itself. 1751 rustfmt: 1847 rustfmt: 1752 $(Q)find $(abs_srctree) -type f -name 1848 $(Q)find $(abs_srctree) -type f -name '*.rs' \ 1753 -o -path $(abs_srctree)/rust/ 1849 -o -path $(abs_srctree)/rust/alloc -prune \ 1754 -o -path $(abs_objtree)/rust/ 1850 -o -path $(abs_objtree)/rust/test -prune \ 1755 | grep -Fv $(abs_srctree)/rus 1851 | grep -Fv $(abs_srctree)/rust/alloc \ 1756 | grep -Fv $(abs_objtree)/rus 1852 | grep -Fv $(abs_objtree)/rust/test \ 1757 | grep -Fv generated \ 1853 | grep -Fv generated \ 1758 | xargs $(RUSTFMT) $(rustfmt_ 1854 | xargs $(RUSTFMT) $(rustfmt_flags) 1759 1855 1760 rustfmtcheck: rustfmt_flags = --check 1856 rustfmtcheck: rustfmt_flags = --check 1761 rustfmtcheck: rustfmt 1857 rustfmtcheck: rustfmt 1762 1858 >> 1859 # IDE support targets >> 1860 PHONY += rust-analyzer >> 1861 rust-analyzer: >> 1862 $(Q)$(MAKE) $(build)=rust $@ >> 1863 1763 # Misc 1864 # Misc 1764 # ------------------------------------------- 1865 # --------------------------------------------------------------------------- 1765 1866 1766 PHONY += misc-check 1867 PHONY += misc-check 1767 misc-check: 1868 misc-check: 1768 $(Q)$(srctree)/scripts/misc-check 1869 $(Q)$(srctree)/scripts/misc-check 1769 1870 1770 all: misc-check 1871 all: misc-check 1771 1872 1772 PHONY += scripts_gdb 1873 PHONY += scripts_gdb 1773 scripts_gdb: prepare0 1874 scripts_gdb: prepare0 1774 $(Q)$(MAKE) $(build)=scripts/gdb 1875 $(Q)$(MAKE) $(build)=scripts/gdb 1775 $(Q)ln -fsn $(abspath $(srctree)/scri 1876 $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) 1776 1877 1777 ifdef CONFIG_GDB_SCRIPTS 1878 ifdef CONFIG_GDB_SCRIPTS 1778 all: scripts_gdb 1879 all: scripts_gdb 1779 endif 1880 endif 1780 1881 1781 else # KBUILD_EXTMOD 1882 else # KBUILD_EXTMOD 1782 1883 1783 filechk_kernel.release = echo $(KERNELRELEASE 1884 filechk_kernel.release = echo $(KERNELRELEASE) 1784 1885 1785 ### 1886 ### 1786 # External module support. 1887 # External module support. 1787 # When building external modules the kernel u 1888 # When building external modules the kernel used as basis is considered 1788 # read-only, and no consistency checks are ma 1889 # read-only, and no consistency checks are made and the make 1789 # system is not used on the basis kernel. If 1890 # system is not used on the basis kernel. If updates are required 1790 # in the basis kernel ordinary make commands 1891 # in the basis kernel ordinary make commands (without M=...) must be used. 1791 1892 1792 # We are always building only modules. 1893 # We are always building only modules. 1793 KBUILD_BUILTIN := 1894 KBUILD_BUILTIN := 1794 KBUILD_MODULES := 1 1895 KBUILD_MODULES := 1 1795 1896 1796 build-dir := $(KBUILD_EXTMOD) 1897 build-dir := $(KBUILD_EXTMOD) 1797 1898 1798 compile_commands.json: $(extmod_prefix)compil 1899 compile_commands.json: $(extmod_prefix)compile_commands.json 1799 PHONY += compile_commands.json 1900 PHONY += compile_commands.json 1800 1901 1801 clean-dirs := $(KBUILD_EXTMOD) 1902 clean-dirs := $(KBUILD_EXTMOD) 1802 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1903 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps \ 1803 $(KBUILD_EXTMOD)/compile_commands.jso !! 1904 $(KBUILD_EXTMOD)/compile_commands.json $(KBUILD_EXTMOD)/.thinlto-cache 1804 1905 1805 PHONY += prepare 1906 PHONY += prepare 1806 # now expand this into a simple variable to r 1907 # now expand this into a simple variable to reduce the cost of shell evaluations 1807 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT 1908 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT) 1808 prepare: 1909 prepare: 1809 @if [ "$(CC_VERSION_TEXT)" != "$(CONF 1910 @if [ "$(CC_VERSION_TEXT)" != "$(CONFIG_CC_VERSION_TEXT)" ]; then \ 1810 echo >&2 "warning: the compil 1911 echo >&2 "warning: the compiler differs from the one used to build the kernel"; \ 1811 echo >&2 " The kernel was bu 1912 echo >&2 " The kernel was built by: $(CONFIG_CC_VERSION_TEXT)"; \ 1812 echo >&2 " You are using: 1913 echo >&2 " You are using: $(CC_VERSION_TEXT)"; \ 1813 fi 1914 fi 1814 1915 1815 PHONY += help 1916 PHONY += help 1816 help: 1917 help: 1817 @echo ' Building external modules.' 1918 @echo ' Building external modules.' 1818 @echo ' Syntax: make -C path/to/ker 1919 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1819 @echo '' 1920 @echo '' 1820 @echo ' modules - default t 1921 @echo ' modules - default target, build the module(s)' 1821 @echo ' modules_install - install t 1922 @echo ' modules_install - install the module' 1822 @echo ' clean - remove ge 1923 @echo ' clean - remove generated files in module directory only' 1823 @echo ' rust-analyzer - generate << 1824 @echo '' 1924 @echo '' 1825 1925 1826 ifndef CONFIG_MODULES << 1827 modules modules_install: __external_modules_e << 1828 __external_modules_error: << 1829 @echo >&2 '***' << 1830 @echo >&2 '*** The present kernel dis << 1831 @echo >&2 '*** You cannot build or in << 1832 @echo >&2 '***' << 1833 @false << 1834 endif << 1835 << 1836 endif # KBUILD_EXTMOD 1926 endif # KBUILD_EXTMOD 1837 1927 1838 # ------------------------------------------- 1928 # --------------------------------------------------------------------------- 1839 # Modules 1929 # Modules 1840 1930 1841 PHONY += modules modules_install modules_sign !! 1931 PHONY += modules modules_install modules_prepare 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 1932 1860 ifdef CONFIG_MODULES 1933 ifdef CONFIG_MODULES 1861 1934 1862 $(MODORDER): $(build-dir) 1935 $(MODORDER): $(build-dir) 1863 @: 1936 @: 1864 1937 1865 # KBUILD_MODPOST_NOFINAL can be set to skip t 1938 # KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules. 1866 # This is solely useful to speed up test comp 1939 # This is solely useful to speed up test compiles. 1867 modules: modpost 1940 modules: modpost 1868 ifneq ($(KBUILD_MODPOST_NOFINAL),1) 1941 ifneq ($(KBUILD_MODPOST_NOFINAL),1) 1869 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1942 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal 1870 endif 1943 endif 1871 1944 1872 PHONY += modules_check 1945 PHONY += modules_check 1873 modules_check: $(MODORDER) 1946 modules_check: $(MODORDER) 1874 $(Q)$(CONFIG_SHELL) $(srctree)/script 1947 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $< 1875 1948 >> 1949 quiet_cmd_depmod = DEPMOD $(MODLIB) >> 1950 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ >> 1951 $(KERNELRELEASE) >> 1952 >> 1953 modules_install: >> 1954 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1955 $(call cmd,depmod) >> 1956 1876 else # CONFIG_MODULES 1957 else # CONFIG_MODULES 1877 1958 1878 modules: !! 1959 # Modules not configured 1879 @: !! 1960 # --------------------------------------------------------------------------- >> 1961 >> 1962 modules modules_install: >> 1963 @echo >&2 '***' >> 1964 @echo >&2 '*** The present kernel configuration has modules disabled.' >> 1965 @echo >&2 '*** To use the module feature, please run "make menuconfig" etc.' >> 1966 @echo >&2 '*** to enable CONFIG_MODULES.' >> 1967 @echo >&2 '***' >> 1968 @exit 1 1880 1969 1881 KBUILD_MODULES := 1970 KBUILD_MODULES := 1882 1971 1883 endif # CONFIG_MODULES 1972 endif # CONFIG_MODULES 1884 1973 1885 PHONY += modpost 1974 PHONY += modpost 1886 modpost: $(if $(single-build),, $(if $(KBUILD 1975 modpost: $(if $(single-build),, $(if $(KBUILD_BUILTIN), vmlinux.o)) \ 1887 $(if $(KBUILD_MODULES), modules_chec 1976 $(if $(KBUILD_MODULES), modules_check) 1888 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1977 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1889 1978 1890 # Single targets 1979 # Single targets 1891 # ------------------------------------------- 1980 # --------------------------------------------------------------------------- 1892 # To build individual files in subdirectories 1981 # To build individual files in subdirectories, you can do like this: 1893 # 1982 # 1894 # make foo/bar/baz.s 1983 # make foo/bar/baz.s 1895 # 1984 # 1896 # The supported suffixes for single-target ar 1985 # The supported suffixes for single-target are listed in 'single-targets' 1897 # 1986 # 1898 # To build only under specific subdirectories 1987 # To build only under specific subdirectories, you can do like this: 1899 # 1988 # 1900 # make foo/bar/baz/ 1989 # make foo/bar/baz/ 1901 1990 1902 ifdef single-build 1991 ifdef single-build 1903 1992 1904 # .ko is special because modpost is needed 1993 # .ko is special because modpost is needed 1905 single-ko := $(sort $(filter %.ko, $(MAKECMDG 1994 single-ko := $(sort $(filter %.ko, $(MAKECMDGOALS))) 1906 single-no-ko := $(filter-out $(single-ko), $( 1995 single-no-ko := $(filter-out $(single-ko), $(MAKECMDGOALS)) \ 1907 $(foreach x, o mod, $(patsubs 1996 $(foreach x, o mod, $(patsubst %.ko, %.$x, $(single-ko))) 1908 1997 1909 $(single-ko): single_modules 1998 $(single-ko): single_modules 1910 @: 1999 @: 1911 $(single-no-ko): $(build-dir) 2000 $(single-no-ko): $(build-dir) 1912 @: 2001 @: 1913 2002 1914 # Remove MODORDER when done because it is not 2003 # Remove MODORDER when done because it is not the real one. 1915 PHONY += single_modules 2004 PHONY += single_modules 1916 single_modules: $(single-no-ko) modules_prepa 2005 single_modules: $(single-no-ko) modules_prepare 1917 $(Q){ $(foreach m, $(single-ko), echo 2006 $(Q){ $(foreach m, $(single-ko), echo $(extmod_prefix)$(m:%.ko=%.o);) } > $(MODORDER) 1918 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 2007 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1919 ifneq ($(KBUILD_MODPOST_NOFINAL),1) 2008 ifneq ($(KBUILD_MODPOST_NOFINAL),1) 1920 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 2009 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal 1921 endif 2010 endif 1922 $(Q)rm -f $(MODORDER) 2011 $(Q)rm -f $(MODORDER) 1923 2012 1924 single-goals := $(addprefix $(build-dir)/, $( 2013 single-goals := $(addprefix $(build-dir)/, $(single-no-ko)) 1925 2014 1926 KBUILD_MODULES := 1 2015 KBUILD_MODULES := 1 1927 2016 1928 endif 2017 endif 1929 2018 1930 # Preset locale variables to speed up the bui 2019 # Preset locale variables to speed up the build process. Limit locale 1931 # tweaks to this spot to avoid wrong language 2020 # tweaks to this spot to avoid wrong language settings when running 1932 # make menuconfig etc. 2021 # make menuconfig etc. 1933 # Error messages still appears in the origina 2022 # Error messages still appears in the original language 1934 PHONY += $(build-dir) 2023 PHONY += $(build-dir) 1935 $(build-dir): prepare 2024 $(build-dir): prepare 1936 $(Q)$(MAKE) $(build)=$@ need-builtin= 2025 $(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1 $(single-goals) 1937 2026 1938 clean-dirs := $(addprefix _clean_, $(clean-di 2027 clean-dirs := $(addprefix _clean_, $(clean-dirs)) 1939 PHONY += $(clean-dirs) clean 2028 PHONY += $(clean-dirs) clean 1940 $(clean-dirs): 2029 $(clean-dirs): 1941 $(Q)$(MAKE) $(clean)=$(patsubst _clea 2030 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1942 2031 1943 clean: $(clean-dirs) 2032 clean: $(clean-dirs) 1944 $(call cmd,rmfiles) 2033 $(call cmd,rmfiles) 1945 @find $(or $(KBUILD_EXTMOD), .) $(RCS 2034 @find $(or $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1946 \( -name '*.[aios]' -o -name 2035 \( -name '*.[aios]' -o -name '*.rsi' -o -name '*.ko' -o -name '.*.cmd' \ 1947 -o -name '*.ko.*' \ 2036 -o -name '*.ko.*' \ 1948 -o -name '*.dtb' -o -name '*. 2037 -o -name '*.dtb' -o -name '*.dtbo' \ 1949 -o -name '*.dtb.S' -o -name ' 2038 -o -name '*.dtb.S' -o -name '*.dtbo.S' \ 1950 -o -name '*.dt.yaml' -o -name !! 2039 -o -name '*.dt.yaml' \ 1951 -o -name '*.dwo' -o -name '*. 2040 -o -name '*.dwo' -o -name '*.lst' \ 1952 -o -name '*.su' -o -name '*.m !! 2041 -o -name '*.su' -o -name '*.mod' -o -name '*.usyms' \ 1953 -o -name '.*.d' -o -name '.*. 2042 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1954 -o -name '*.lex.c' -o -name ' 2043 -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 1955 -o -name '*.asn1.[ch]' \ 2044 -o -name '*.asn1.[ch]' \ 1956 -o -name '*.symtypes' -o -nam 2045 -o -name '*.symtypes' -o -name 'modules.order' \ 1957 -o -name '*.c.[012]*.*' \ 2046 -o -name '*.c.[012]*.*' \ 1958 -o -name '*.ll' \ 2047 -o -name '*.ll' \ 1959 -o -name '*.gcno' \ 2048 -o -name '*.gcno' \ 1960 \) -type f -print \ !! 2049 -o -name '*.*.symversions' \) -type f -print \ 1961 -o -name '.tmp_*' -print \ 2050 -o -name '.tmp_*' -print \ 1962 | xargs rm -rf 2051 | xargs rm -rf 1963 2052 1964 # Generate tags for editors 2053 # Generate tags for editors 1965 # ------------------------------------------- 2054 # --------------------------------------------------------------------------- 1966 quiet_cmd_tags = GEN $@ 2055 quiet_cmd_tags = GEN $@ 1967 cmd_tags = $(BASH) $(srctree)/scripts/t 2056 cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@ 1968 2057 1969 tags TAGS cscope gtags: FORCE 2058 tags TAGS cscope gtags: FORCE 1970 $(call cmd,tags) 2059 $(call cmd,tags) 1971 2060 1972 # Generate rust-project.json (a file that des << 1973 # Rust projects) for rust-analyzer (an implem << 1974 # Protocol). << 1975 PHONY += rust-analyzer << 1976 rust-analyzer: << 1977 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1978 $(Q)$(MAKE) $(build)=rust $@ << 1979 << 1980 # Script to generate missing namespace depend 2061 # Script to generate missing namespace dependencies 1981 # ------------------------------------------- 2062 # --------------------------------------------------------------------------- 1982 2063 1983 PHONY += nsdeps 2064 PHONY += nsdeps 1984 nsdeps: export KBUILD_NSDEPS=1 2065 nsdeps: export KBUILD_NSDEPS=1 1985 nsdeps: modules 2066 nsdeps: modules 1986 $(Q)$(CONFIG_SHELL) $(srctree)/script 2067 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/nsdeps 1987 2068 1988 # Clang Tooling 2069 # Clang Tooling 1989 # ------------------------------------------- 2070 # --------------------------------------------------------------------------- 1990 2071 1991 quiet_cmd_gen_compile_commands = GEN $@ 2072 quiet_cmd_gen_compile_commands = GEN $@ 1992 cmd_gen_compile_commands = $(PYTHON3) $ 2073 cmd_gen_compile_commands = $(PYTHON3) $< -a $(AR) -o $@ $(filter-out $<, $(real-prereqs)) 1993 2074 1994 $(extmod_prefix)compile_commands.json: $(srct !! 2075 $(extmod_prefix)compile_commands.json: scripts/clang-tools/gen_compile_commands.py \ 1995 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K 2076 $(if $(KBUILD_EXTMOD),, vmlinux.a $(KBUILD_VMLINUX_LIBS)) \ 1996 $(if $(CONFIG_MODULES), $(MODORDER)) 2077 $(if $(CONFIG_MODULES), $(MODORDER)) FORCE 1997 $(call if_changed,gen_compile_command 2078 $(call if_changed,gen_compile_commands) 1998 2079 1999 targets += $(extmod_prefix)compile_commands.j 2080 targets += $(extmod_prefix)compile_commands.json 2000 2081 2001 PHONY += clang-tidy clang-analyzer 2082 PHONY += clang-tidy clang-analyzer 2002 2083 2003 ifdef CONFIG_CC_IS_CLANG 2084 ifdef CONFIG_CC_IS_CLANG 2004 quiet_cmd_clang_tools = CHECK $< 2085 quiet_cmd_clang_tools = CHECK $< 2005 cmd_clang_tools = $(PYTHON3) $(srctree) 2086 cmd_clang_tools = $(PYTHON3) $(srctree)/scripts/clang-tools/run-clang-tools.py $@ $< 2006 2087 2007 clang-tidy clang-analyzer: $(extmod_prefix)co 2088 clang-tidy clang-analyzer: $(extmod_prefix)compile_commands.json 2008 $(call cmd,clang_tools) 2089 $(call cmd,clang_tools) 2009 else 2090 else 2010 clang-tidy clang-analyzer: 2091 clang-tidy clang-analyzer: 2011 @echo "$@ requires CC=clang" >&2 2092 @echo "$@ requires CC=clang" >&2 2012 @false 2093 @false 2013 endif 2094 endif 2014 2095 2015 # Scripts to check various things for consist 2096 # Scripts to check various things for consistency 2016 # ------------------------------------------- 2097 # --------------------------------------------------------------------------- 2017 2098 2018 PHONY += includecheck versioncheck coccicheck 2099 PHONY += includecheck versioncheck coccicheck export_report 2019 2100 2020 includecheck: 2101 includecheck: 2021 find $(srctree)/* $(RCS_FIND_IGNORE) 2102 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2022 -name '*.[hcS]' -type f -prin 2103 -name '*.[hcS]' -type f -print | sort \ 2023 | xargs $(PERL) -w $(srctree) 2104 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 2024 2105 2025 versioncheck: 2106 versioncheck: 2026 find $(srctree)/* $(RCS_FIND_IGNORE) 2107 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2027 -name '*.[hcS]' -type f -prin 2108 -name '*.[hcS]' -type f -print | sort \ 2028 | xargs $(PERL) -w $(srctree) 2109 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 2029 2110 2030 coccicheck: 2111 coccicheck: 2031 $(Q)$(BASH) $(srctree)/scripts/$@ 2112 $(Q)$(BASH) $(srctree)/scripts/$@ 2032 2113 2033 export_report: 2114 export_report: 2034 $(PERL) $(srctree)/scripts/export_rep 2115 $(PERL) $(srctree)/scripts/export_report.pl 2035 2116 2036 PHONY += checkstack kernelrelease kernelversi 2117 PHONY += checkstack kernelrelease kernelversion image_name 2037 2118 2038 # UML needs a little special treatment here. 2119 # UML needs a little special treatment here. It wants to use the host 2039 # toolchain, so needs $(SUBARCH) passed to ch 2120 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 2040 # else wants $(ARCH), including people doing 2121 # else wants $(ARCH), including people doing cross-builds, which means 2041 # that $(SUBARCH) doesn't work here. 2122 # that $(SUBARCH) doesn't work here. 2042 ifeq ($(ARCH), um) 2123 ifeq ($(ARCH), um) 2043 CHECKSTACK_ARCH := $(SUBARCH) 2124 CHECKSTACK_ARCH := $(SUBARCH) 2044 else 2125 else 2045 CHECKSTACK_ARCH := $(ARCH) 2126 CHECKSTACK_ARCH := $(ARCH) 2046 endif 2127 endif 2047 MINSTACKSIZE ?= 100 << 2048 checkstack: 2128 checkstack: 2049 $(OBJDUMP) -d vmlinux $$(find . -name 2129 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 2050 $(PERL) $(srctree)/scripts/checkstack !! 2130 $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 2051 2131 2052 kernelrelease: 2132 kernelrelease: 2053 @$(filechk_kernel.release) 2133 @$(filechk_kernel.release) 2054 2134 2055 kernelversion: 2135 kernelversion: 2056 @echo $(KERNELVERSION) 2136 @echo $(KERNELVERSION) 2057 2137 2058 image_name: 2138 image_name: 2059 @echo $(KBUILD_IMAGE) 2139 @echo $(KBUILD_IMAGE) 2060 << 2061 PHONY += run-command << 2062 run-command: << 2063 $(Q)$(KBUILD_RUN_COMMAND) << 2064 2140 2065 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 2141 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2066 cmd_rmfiles = rm -rf $(rm-files) 2142 cmd_rmfiles = rm -rf $(rm-files) 2067 2143 2068 # read saved command lines for existing targe 2144 # read saved command lines for existing targets 2069 existing-targets := $(wildcard $(sort $(targe 2145 existing-targets := $(wildcard $(sort $(targets))) 2070 2146 2071 -include $(foreach f,$(existing-targets),$(di 2147 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 2072 2148 2073 endif # config-build 2149 endif # config-build 2074 endif # mixed-build 2150 endif # mixed-build 2075 endif # need-sub-make 2151 endif # need-sub-make 2076 2152 2077 PHONY += FORCE 2153 PHONY += FORCE 2078 FORCE: 2154 FORCE: 2079 2155 2080 # Declare the contents of the PHONY variable 2156 # Declare the contents of the PHONY variable as phony. We keep that 2081 # information in a variable so we can use it 2157 # information in a variable so we can use it in if_changed and friends. 2082 .PHONY: $(PHONY) 2158 .PHONY: $(PHONY)
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