1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0 2 VERSION = 6 !! 2 VERSION = 5 3 PATCHLEVEL = 12 !! 3 PATCHLEVEL = 13 4 SUBLEVEL = 0 !! 4 SUBLEVEL = 19 5 EXTRAVERSION = -rc7 !! 5 EXTRAVERSION = 6 NAME = Baby Opossum Posse !! 6 NAME = Opossums on Parade 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)),) << 15 $(error GNU Make >= 4.0 is required. Your Make << 16 endif << 17 << 18 $(if $(filter __%, $(MAKECMDGOALS)), \ 14 $(if $(filter __%, $(MAKECMDGOALS)), \ 19 $(error targets prefixed with '__' are 15 $(error targets prefixed with '__' are only for internal use)) 20 16 21 # That's our default target when none is given 17 # That's our default target when none is given on the command line 22 PHONY := __all 18 PHONY := __all 23 __all: 19 __all: 24 20 25 # We are using a recursive build, so we need t 21 # We are using a recursive build, so we need to do a little thinking 26 # to get the ordering right. 22 # to get the ordering right. 27 # 23 # 28 # Most importantly: sub-Makefiles should only 24 # Most importantly: sub-Makefiles should only ever modify files in 29 # their own directory. If in some directory we 25 # their own directory. If in some directory we have a dependency on 30 # a file in another dir (which doesn't happen 26 # a file in another dir (which doesn't happen often, but it's often 31 # unavoidable when linking the built-in.a targ 27 # unavoidable when linking the built-in.a targets which finally 32 # turn into vmlinux), we will call a sub make 28 # turn into vmlinux), we will call a sub make in that other dir, and 33 # after that we are sure that everything which 29 # after that we are sure that everything which is in that other dir 34 # is now up to date. 30 # is now up to date. 35 # 31 # 36 # The only cases where we need to modify files 32 # The only cases where we need to modify files which have global 37 # effects are thus separated out and done befo 33 # effects are thus separated out and done before the recursive 38 # descending is started. They are now explicit 34 # descending is started. They are now explicitly listed as the 39 # prepare rule. 35 # prepare rule. 40 36 41 this-makefile := $(lastword $(MAKEFILE_LIST)) << 42 abs_srctree := $(realpath $(dir $(this-makefil << 43 abs_objtree := $(CURDIR) << 44 << 45 ifneq ($(sub_make_done),1) 37 ifneq ($(sub_make_done),1) 46 38 47 # Do not use make's built-in rules and variabl 39 # Do not use make's built-in rules and variables 48 # (this increases performance and avoids hard- 40 # (this increases performance and avoids hard-to-debug behaviour) 49 MAKEFLAGS += -rR 41 MAKEFLAGS += -rR 50 42 51 # Avoid funny character set dependencies 43 # Avoid funny character set dependencies 52 unexport LC_ALL 44 unexport LC_ALL 53 LC_COLLATE=C 45 LC_COLLATE=C 54 LC_NUMERIC=C 46 LC_NUMERIC=C 55 export LC_COLLATE LC_NUMERIC 47 export LC_COLLATE LC_NUMERIC 56 48 57 # Avoid interference with shell env settings 49 # Avoid interference with shell env settings 58 unexport GREP_OPTIONS 50 unexport GREP_OPTIONS 59 51 60 # Beautify output 52 # Beautify output 61 # -------------------------------------------- 53 # --------------------------------------------------------------------------- 62 # 54 # 63 # Most of build commands in Kbuild start with !! 55 # Normally, we echo the whole command before executing it. By making 64 # "quiet_cmd_*". If defined, the short log is !! 56 # that echo $($(quiet)$(cmd)), we now have the possibility to set 65 # that command is printed by default. !! 57 # $(quiet) to choose other forms of output instead, e.g. 66 # !! 58 # 67 # e.g.) !! 59 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 68 # quiet_cmd_depmod = DEPMOD $(MODLIB) !! 60 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 69 # cmd_depmod = $(srctree)/scripts/dep !! 61 # >> 62 # If $(quiet) is empty, the whole command will be printed. >> 63 # If it is set to "quiet_", only the short version will be printed. >> 64 # If it is set to "silent_", nothing will be printed at all, since >> 65 # the variable $(silent_cmd_cc_o_c) doesn't exist. 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)ln $@ :< 75 # 71 # 76 # If KBUILD_VERBOSE contains 1, the whole comm !! 72 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 77 # If KBUILD_VERBOSE contains 2, the reason for !! 73 # If KBUILD_VERBOSE equals 1 then the above command is displayed. >> 74 # If KBUILD_VERBOSE equals 2 then give the reason why each target is rebuilt. 78 # 75 # 79 # To put more focus on warnings, be less verbo 76 # To put more focus on warnings, be less verbose as default 80 # Use 'make V=1' to see the full commands 77 # Use 'make V=1' to see the full commands 81 78 82 ifeq ("$(origin V)", "command line") 79 ifeq ("$(origin V)", "command line") 83 KBUILD_VERBOSE = $(V) 80 KBUILD_VERBOSE = $(V) 84 endif 81 endif >> 82 ifndef KBUILD_VERBOSE >> 83 KBUILD_VERBOSE = 0 >> 84 endif 85 85 86 quiet = quiet_ !! 86 ifeq ($(KBUILD_VERBOSE),1) 87 Q = @ << 88 << 89 ifneq ($(findstring 1, $(KBUILD_VERBOSE)),) << 90 quiet = 87 quiet = 91 Q = 88 Q = >> 89 else >> 90 quiet=quiet_ >> 91 Q = @ 92 endif 92 endif 93 93 94 # If the user is running make -s (silent mode) 94 # If the user is running make -s (silent mode), suppress echoing of 95 # commands 95 # commands 96 ifneq ($(findstring s,$(firstword -$(MAKEFLAGS !! 96 97 quiet=silent_ !! 97 ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) 98 override KBUILD_VERBOSE := !! 98 quiet=silent_ >> 99 KBUILD_VERBOSE = 0 99 endif 100 endif 100 101 101 export quiet Q KBUILD_VERBOSE 102 export quiet Q KBUILD_VERBOSE 102 103 103 # Call a source code checker (by default, "spa 104 # Call a source code checker (by default, "sparse") as part of the 104 # C compilation. 105 # C compilation. 105 # 106 # 106 # Use 'make C=1' to enable checking of only re 107 # Use 'make C=1' to enable checking of only re-compiled files. 107 # Use 'make C=2' to enable checking of *all* s 108 # Use 'make C=2' to enable checking of *all* source files, regardless 108 # of whether they are re-compiled or not. 109 # of whether they are re-compiled or not. 109 # 110 # 110 # See the file "Documentation/dev-tools/sparse 111 # See the file "Documentation/dev-tools/sparse.rst" for more details, 111 # including where to get the "sparse" utility. 112 # including where to get the "sparse" utility. 112 113 113 ifeq ("$(origin C)", "command line") 114 ifeq ("$(origin C)", "command line") 114 KBUILD_CHECKSRC = $(C) 115 KBUILD_CHECKSRC = $(C) 115 endif 116 endif 116 ifndef KBUILD_CHECKSRC 117 ifndef KBUILD_CHECKSRC 117 KBUILD_CHECKSRC = 0 118 KBUILD_CHECKSRC = 0 118 endif 119 endif 119 120 120 export KBUILD_CHECKSRC 121 export KBUILD_CHECKSRC 121 122 122 # Enable "clippy" (a linter) as part of the Ru << 123 # << 124 # Use 'make CLIPPY=1' to enable it. << 125 ifeq ("$(origin CLIPPY)", "command line") << 126 KBUILD_CLIPPY := $(CLIPPY) << 127 endif << 128 << 129 export KBUILD_CLIPPY << 130 << 131 # Use make M=dir or set the environment variab 123 # Use make M=dir or set the environment variable KBUILD_EXTMOD to specify the 132 # directory of external module to build. Setti 124 # directory of external module to build. Setting M= takes precedence. 133 ifeq ("$(origin M)", "command line") 125 ifeq ("$(origin M)", "command line") 134 KBUILD_EXTMOD := $(M) 126 KBUILD_EXTMOD := $(M) 135 endif 127 endif 136 128 137 $(if $(word 2, $(KBUILD_EXTMOD)), \ 129 $(if $(word 2, $(KBUILD_EXTMOD)), \ 138 $(error building multiple external mod 130 $(error building multiple external modules is not supported)) 139 131 140 $(foreach x, % :, $(if $(findstring $x, $(KBUI << 141 $(error module directory path cannot c << 142 << 143 # Remove trailing slashes 132 # Remove trailing slashes 144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) 133 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) 145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM 134 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTMOD).) 146 endif 135 endif 147 136 148 export KBUILD_EXTMOD 137 export KBUILD_EXTMOD 149 138 150 # backward compatibility << 151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC << 152 << 153 ifeq ("$(origin W)", "command line") << 154 KBUILD_EXTRA_WARN := $(W) << 155 endif << 156 << 157 export KBUILD_EXTRA_WARN << 158 << 159 # Kbuild will save output files in the current 139 # Kbuild will save output files in the current working directory. 160 # This does not need to match to the root of t 140 # This does not need to match to the root of the kernel source tree. 161 # 141 # 162 # For example, you can do this: 142 # For example, you can do this: 163 # 143 # 164 # cd /dir/to/store/output/files; make -f /dir 144 # cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile 165 # 145 # 166 # If you want to save output files in a differ 146 # If you want to save output files in a different location, there are 167 # two syntaxes to specify it. 147 # two syntaxes to specify it. 168 # 148 # 169 # 1) O= 149 # 1) O= 170 # Use "make O=dir/to/store/output/files/" 150 # Use "make O=dir/to/store/output/files/" 171 # 151 # 172 # 2) Set KBUILD_OUTPUT 152 # 2) Set KBUILD_OUTPUT 173 # Set the environment variable KBUILD_OUTPUT t 153 # Set the environment variable KBUILD_OUTPUT to point to the output directory. 174 # export KBUILD_OUTPUT=dir/to/store/output/fil 154 # export KBUILD_OUTPUT=dir/to/store/output/files/; make 175 # 155 # 176 # The O= assignment takes precedence over the 156 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 177 # variable. 157 # variable. 178 158 179 # Do we want to change the working directory? 159 # Do we want to change the working directory? 180 ifeq ("$(origin O)", "command line") 160 ifeq ("$(origin O)", "command line") 181 KBUILD_OUTPUT := $(O) 161 KBUILD_OUTPUT := $(O) 182 endif 162 endif 183 163 184 ifneq ($(KBUILD_OUTPUT),) 164 ifneq ($(KBUILD_OUTPUT),) 185 # $(realpath ...) gets empty if the path does !! 165 # Make's built-in functions such as $(abspath ...), $(realpath ...) cannot 186 $(shell mkdir -p "$(KBUILD_OUTPUT)") !! 166 # expand a shell special character '~'. We use a somewhat tedious way here. >> 167 abs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) >> 168 $(if $(abs_objtree),, \ >> 169 $(error failed to create output directory "$(KBUILD_OUTPUT)")) >> 170 187 # $(realpath ...) resolves symlinks 171 # $(realpath ...) resolves symlinks 188 abs_objtree := $(realpath $(KBUILD_OUTPUT)) !! 172 abs_objtree := $(realpath $(abs_objtree)) 189 $(if $(abs_objtree),,$(error failed to create !! 173 else >> 174 abs_objtree := $(CURDIR) 190 endif # ifneq ($(KBUILD_OUTPUT),) 175 endif # ifneq ($(KBUILD_OUTPUT),) 191 176 192 ifneq ($(words $(subst :, ,$(abs_srctree))), 1 !! 177 ifeq ($(abs_objtree),$(CURDIR)) 193 $(error source directory cannot contain spaces !! 178 # Suppress "Entering directory ..." unless we are changing the work directory. >> 179 MAKEFLAGS += --no-print-directory >> 180 else >> 181 need-sub-make := 1 194 endif 182 endif 195 183 196 export sub_make_done := 1 !! 184 this-makefile := $(lastword $(MAKEFILE_LIST)) >> 185 abs_srctree := $(realpath $(dir $(this-makefile))) 197 186 198 endif # sub_make_done !! 187 ifneq ($(words $(subst :, ,$(abs_srctree))), 1) >> 188 $(error source directory cannot contain spaces or colons) >> 189 endif 199 190 200 ifeq ($(abs_objtree),$(CURDIR)) !! 191 ifneq ($(abs_srctree),$(abs_objtree)) 201 # Suppress "Entering directory ..." if we are !! 192 # Look for make include files relative to root of kernel src 202 no-print-directory := --no-print-directory !! 193 # 203 else !! 194 # This does not become effective immediately because MAKEFLAGS is re-parsed 204 # Recursion to show "Entering directory ..." !! 195 # once after the Makefile is read. We need to invoke sub-make. >> 196 MAKEFLAGS += --include-dir=$(abs_srctree) 205 need-sub-make := 1 197 need-sub-make := 1 206 endif 198 endif 207 199 208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 200 ifneq ($(filter 3.%,$(MAKE_VERSION)),) 209 # If --no-print-directory is unset, recurse on !! 201 # 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x 210 # You may end up recursing into __sub-make twi !! 202 # We need to invoke sub-make to avoid implicit rules in the top Makefile. 211 # behavior change in GNU Make 4.4.1. << 212 need-sub-make := 1 203 need-sub-make := 1 >> 204 # Cancel implicit rules for this Makefile. >> 205 $(this-makefile): ; 213 endif 206 endif 214 207 >> 208 export abs_srctree abs_objtree >> 209 export sub_make_done := 1 >> 210 215 ifeq ($(need-sub-make),1) 211 ifeq ($(need-sub-make),1) 216 212 217 PHONY += $(MAKECMDGOALS) __sub-make 213 PHONY += $(MAKECMDGOALS) __sub-make 218 214 219 $(filter-out $(this-makefile), $(MAKECMDGOALS) 215 $(filter-out $(this-makefile), $(MAKECMDGOALS)) __all: __sub-make 220 @: 216 @: 221 217 222 # Invoke a second make in the output directory 218 # Invoke a second make in the output directory, passing relevant variables 223 __sub-make: 219 __sub-make: 224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 220 $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS) 225 -f $(abs_srctree)/Makefile $(MAKECMDGO << 226 221 227 else # need-sub-make !! 222 endif # need-sub-make >> 223 endif # sub_make_done 228 224 229 # We process the rest of the Makefile if this 225 # We process the rest of the Makefile if this is the final invocation of make >> 226 ifeq ($(need-sub-make),) >> 227 >> 228 # Do not print "Entering directory ...", >> 229 # but we want to display it when entering to the output directory >> 230 # so that IDEs/editors are able to understand relative filenames. >> 231 MAKEFLAGS += --no-print-directory 230 232 231 ifeq ($(abs_srctree),$(abs_objtree)) 233 ifeq ($(abs_srctree),$(abs_objtree)) 232 # building in the source tree 234 # building in the source tree 233 srctree := . 235 srctree := . 234 building_out_of_srctree := 236 building_out_of_srctree := 235 else 237 else 236 ifeq ($(abs_srctree)/,$(dir $(abs_objt 238 ifeq ($(abs_srctree)/,$(dir $(abs_objtree))) 237 # building in a subdirectory o 239 # building in a subdirectory of the source tree 238 srctree := .. 240 srctree := .. 239 else 241 else 240 srctree := $(abs_srctree) 242 srctree := $(abs_srctree) 241 endif 243 endif 242 building_out_of_srctree := 1 244 building_out_of_srctree := 1 243 endif 245 endif 244 246 245 ifneq ($(KBUILD_ABS_SRCTREE),) 247 ifneq ($(KBUILD_ABS_SRCTREE),) 246 srctree := $(abs_srctree) 248 srctree := $(abs_srctree) 247 endif 249 endif 248 250 249 objtree := . 251 objtree := . 250 << 251 VPATH := << 252 << 253 ifeq ($(KBUILD_EXTMOD),) << 254 ifdef building_out_of_srctree << 255 VPATH := $(srctree) 252 VPATH := $(srctree) 256 endif << 257 endif << 258 253 259 export building_out_of_srctree srctree objtree 254 export building_out_of_srctree srctree objtree VPATH 260 255 261 # To make sure we do not include .config for a 256 # To make sure we do not include .config for any of the *config targets 262 # catch them early, and hand them over to scri 257 # catch them early, and hand them over to scripts/kconfig/Makefile 263 # It is allowed to specify more targets when c 258 # It is allowed to specify more targets when calling make, including 264 # mixing *config targets and build targets. 259 # mixing *config targets and build targets. 265 # For example 'make oldconfig all'. 260 # For example 'make oldconfig all'. 266 # Detect when mixed targets is specified, and 261 # Detect when mixed targets is specified, and make a second invocation 267 # of make so .config is not included in this c 262 # of make so .config is not included in this case either (for *config). 268 263 269 version_h := include/generated/uapi/linux/vers 264 version_h := include/generated/uapi/linux/version.h 270 265 271 clean-targets := %clean mrproper cleandocs 266 clean-targets := %clean mrproper cleandocs 272 no-dot-config-targets := $(clean-targets) \ 267 no-dot-config-targets := $(clean-targets) \ 273 cscope gtags TAGS tag 268 cscope gtags TAGS tags help% %docs check% coccicheck \ 274 $(version_h) headers 269 $(version_h) headers headers_% archheaders archscripts \ 275 %asm-generic kernelve 270 %asm-generic kernelversion %src-pkg dt_binding_check \ 276 outputmakefile rustav !! 271 outputmakefile 277 no-sync-config-targets := $(no-dot-config-targ !! 272 # Installation targets should not require compiler. Unfortunately, vdso_install >> 273 # is an exception where build artifacts may be updated. This must be fixed. >> 274 no-compiler-targets := $(no-dot-config-targets) install dtbs_install \ >> 275 headers_install modules_install kernelrelease image_name >> 276 no-sync-config-targets := $(no-dot-config-targets) %install kernelrelease \ 278 image_name 277 image_name 279 single-targets := %.a %.i %.ko %.lds %.ll %.ls !! 278 single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/ 280 279 281 config-build := 280 config-build := 282 mixed-build := 281 mixed-build := 283 need-config := 1 282 need-config := 1 >> 283 need-compiler := 1 284 may-sync-config := 1 284 may-sync-config := 1 285 single-build := 285 single-build := 286 286 287 ifneq ($(filter $(no-dot-config-targets), $(MA 287 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 288 ifeq ($(filter-out $(no-dot-config-targets !! 288 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 289 need-config := !! 289 need-config := 290 endif !! 290 endif 291 endif 291 endif 292 292 293 ifneq ($(filter $(no-sync-config-targets), $(M !! 293 ifneq ($(filter $(no-compiler-targets), $(MAKECMDGOALS)),) 294 ifeq ($(filter-out $(no-sync-config-target !! 294 ifeq ($(filter-out $(no-compiler-targets), $(MAKECMDGOALS)),) 295 may-sync-config := !! 295 need-compiler := 296 endif !! 296 endif 297 endif 297 endif 298 298 299 need-compiler := $(may-sync-config) !! 299 ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) >> 300 ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) >> 301 may-sync-config := >> 302 endif >> 303 endif 300 304 301 ifneq ($(KBUILD_EXTMOD),) 305 ifneq ($(KBUILD_EXTMOD),) 302 may-sync-config := !! 306 may-sync-config := 303 endif 307 endif 304 308 305 ifeq ($(KBUILD_EXTMOD),) 309 ifeq ($(KBUILD_EXTMOD),) 306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 310 ifneq ($(filter %config,$(MAKECMDGOALS)),) 307 config-build := 1 !! 311 config-build := 1 308 ifneq ($(words $(MAKECMDGOALS)),1) !! 312 ifneq ($(words $(MAKECMDGOALS)),1) 309 mixed-build := 1 !! 313 mixed-build := 1 >> 314 endif 310 endif 315 endif 311 endif << 312 endif 316 endif 313 317 314 # We cannot build single targets and the other 318 # We cannot build single targets and the others at the same time 315 ifneq ($(filter $(single-targets), $(MAKECMDGO 319 ifneq ($(filter $(single-targets), $(MAKECMDGOALS)),) 316 single-build := 1 !! 320 single-build := 1 317 ifneq ($(filter-out $(single-targets), $(M !! 321 ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),) 318 mixed-build := 1 !! 322 mixed-build := 1 319 endif !! 323 endif 320 endif 324 endif 321 325 322 # For "make -j clean all", "make -j mrproper d 326 # For "make -j clean all", "make -j mrproper defconfig all", etc. 323 ifneq ($(filter $(clean-targets),$(MAKECMDGOAL 327 ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 324 ifneq ($(filter-out $(clean-targets),$(MAK !! 328 ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 325 mixed-build := 1 !! 329 mixed-build := 1 326 endif !! 330 endif 327 endif 331 endif 328 332 329 # install and modules_install need also be pro 333 # install and modules_install need also be processed one by one 330 ifneq ($(filter install,$(MAKECMDGOALS)),) 334 ifneq ($(filter install,$(MAKECMDGOALS)),) 331 ifneq ($(filter modules_install,$(MAKECMDG !! 335 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 332 mixed-build := 1 !! 336 mixed-build := 1 333 endif !! 337 endif 334 endif 338 endif 335 339 336 ifdef mixed-build 340 ifdef mixed-build 337 # ============================================ 341 # =========================================================================== 338 # We're called with mixed targets (*config and 342 # We're called with mixed targets (*config and build targets). 339 # Handle them one by one. 343 # Handle them one by one. 340 344 341 PHONY += $(MAKECMDGOALS) __build_one_by_one 345 PHONY += $(MAKECMDGOALS) __build_one_by_one 342 346 343 $(MAKECMDGOALS): __build_one_by_one 347 $(MAKECMDGOALS): __build_one_by_one 344 @: 348 @: 345 349 346 __build_one_by_one: 350 __build_one_by_one: 347 $(Q)set -e; \ 351 $(Q)set -e; \ 348 for i in $(MAKECMDGOALS); do \ 352 for i in $(MAKECMDGOALS); do \ 349 $(MAKE) -f $(srctree)/Makefile 353 $(MAKE) -f $(srctree)/Makefile $$i; \ 350 done 354 done 351 355 352 else # !mixed-build 356 else # !mixed-build 353 357 354 include $(srctree)/scripts/Kbuild.include 358 include $(srctree)/scripts/Kbuild.include 355 359 356 # Read KERNELRELEASE from include/config/kerne 360 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 357 KERNELRELEASE = $(call read-file, include/conf !! 361 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. 362 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA 363 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 360 364 361 include $(srctree)/scripts/subarch.include 365 include $(srctree)/scripts/subarch.include 362 366 363 # Cross compiling and selecting different set 367 # Cross compiling and selecting different set of gcc/bin-utils 364 # -------------------------------------------- 368 # --------------------------------------------------------------------------- 365 # 369 # 366 # When performing cross compilation for other 370 # When performing cross compilation for other architectures ARCH shall be set 367 # to the target architecture. (See arch/* for 371 # to the target architecture. (See arch/* for the possibilities). 368 # ARCH can be set during invocation of make: 372 # ARCH can be set during invocation of make: 369 # make ARCH=arm64 !! 373 # make ARCH=ia64 370 # Another way is to have ARCH set in the envir 374 # Another way is to have ARCH set in the environment. 371 # The default ARCH is the host where make is e 375 # The default ARCH is the host where make is executed. 372 376 373 # CROSS_COMPILE specify the prefix used for al 377 # CROSS_COMPILE specify the prefix used for all executables used 374 # during compilation. Only gcc and related bin 378 # during compilation. Only gcc and related bin-utils executables 375 # are prefixed with $(CROSS_COMPILE). 379 # are prefixed with $(CROSS_COMPILE). 376 # CROSS_COMPILE can be set on the command line 380 # CROSS_COMPILE can be set on the command line 377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 381 # make CROSS_COMPILE=ia64-linux- 378 # Alternatively CROSS_COMPILE can be set in th 382 # Alternatively CROSS_COMPILE can be set in the environment. 379 # Default value for CROSS_COMPILE is not to pr 383 # Default value for CROSS_COMPILE is not to prefix executables 380 # Note: Some architectures assign CROSS_COMPIL 384 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 381 ARCH ?= $(SUBARCH) 385 ARCH ?= $(SUBARCH) 382 386 383 # Architecture as present in compile.h 387 # Architecture as present in compile.h 384 UTS_MACHINE := $(ARCH) 388 UTS_MACHINE := $(ARCH) 385 SRCARCH := $(ARCH) 389 SRCARCH := $(ARCH) 386 390 387 # Additional ARCH settings for x86 391 # Additional ARCH settings for x86 388 ifeq ($(ARCH),i386) 392 ifeq ($(ARCH),i386) 389 SRCARCH := x86 393 SRCARCH := x86 390 endif 394 endif 391 ifeq ($(ARCH),x86_64) 395 ifeq ($(ARCH),x86_64) 392 SRCARCH := x86 396 SRCARCH := x86 393 endif 397 endif 394 398 395 # Additional ARCH settings for sparc 399 # Additional ARCH settings for sparc 396 ifeq ($(ARCH),sparc32) 400 ifeq ($(ARCH),sparc32) 397 SRCARCH := sparc 401 SRCARCH := sparc 398 endif 402 endif 399 ifeq ($(ARCH),sparc64) 403 ifeq ($(ARCH),sparc64) 400 SRCARCH := sparc 404 SRCARCH := sparc 401 endif 405 endif 402 406 403 # Additional ARCH settings for parisc 407 # Additional ARCH settings for parisc 404 ifeq ($(ARCH),parisc64) 408 ifeq ($(ARCH),parisc64) 405 SRCARCH := parisc 409 SRCARCH := parisc 406 endif 410 endif 407 411 408 export cross_compiling := 412 export cross_compiling := 409 ifneq ($(SRCARCH),$(SUBARCH)) 413 ifneq ($(SRCARCH),$(SUBARCH)) 410 cross_compiling := 1 414 cross_compiling := 1 411 endif 415 endif 412 416 413 KCONFIG_CONFIG ?= .config 417 KCONFIG_CONFIG ?= .config 414 export KCONFIG_CONFIG 418 export KCONFIG_CONFIG 415 419 416 # SHELL used by kbuild 420 # SHELL used by kbuild 417 CONFIG_SHELL := sh 421 CONFIG_SHELL := sh 418 422 419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 423 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG 424 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d 425 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 422 426 423 ifneq ($(LLVM),) 427 ifneq ($(LLVM),) 424 ifneq ($(filter %/,$(LLVM)),) !! 428 HOSTCC = clang 425 LLVM_PREFIX := $(LLVM) !! 429 HOSTCXX = clang++ 426 else ifneq ($(filter -%,$(LLVM)),) << 427 LLVM_SUFFIX := $(LLVM) << 428 endif << 429 << 430 HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) << 431 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX) << 432 else 430 else 433 HOSTCC = gcc 431 HOSTCC = gcc 434 HOSTCXX = g++ 432 HOSTCXX = g++ 435 endif 433 endif 436 HOSTRUSTC = rustc << 437 HOSTPKG_CONFIG = pkg-config << 438 434 439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto !! 435 export KBUILD_USERCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \ 440 -O2 -fomit-frame-poin !! 436 -O2 -fomit-frame-pointer -std=gnu89 441 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) !! 437 export KBUILD_USERLDFLAGS := 442 KBUILD_USERLDFLAGS := $(USERLDFLAGS) !! 438 443 !! 439 KBUILD_HOSTCFLAGS := $(KBUILD_USERCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS) 444 # These flags apply to all Rust code in the tr !! 440 KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 445 # host programs. << 446 export rust_common_flags := --edition=2021 \ << 447 -Zbinary_dep_depin << 448 -Astable_features << 449 -Dunsafe_op_in_uns << 450 -Dnon_ascii_idents << 451 -Wrust_2018_idioms << 452 -Wunreachable_pub << 453 -Wmissing_docs \ << 454 -Wrustdoc::missing << 455 -Wclippy::all \ << 456 -Wclippy::mut_mut << 457 -Wclippy::needless << 458 -Wclippy::needless << 459 -Wclippy::no_mangl << 460 -Wclippy::dbg_macr << 461 << 462 KBUILD_HOSTCFLAGS := $(KBUILD_USERHOSTCFLAGS << 463 $(HOSTCFLAGS) -I $(srct << 464 KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CF << 465 -I $(srctree)/scripts/i << 466 KBUILD_HOSTRUSTFLAGS := $(rust_common_flags) - << 467 -Zallow-features= $(HO << 468 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(H 441 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 469 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOST 442 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 470 443 471 # Make variables (CC, etc...) 444 # Make variables (CC, etc...) 472 CPP = $(CC) -E 445 CPP = $(CC) -E 473 ifneq ($(LLVM),) 446 ifneq ($(LLVM),) 474 CC = $(LLVM_PREFIX)clang$(LLVM_SU !! 447 CC = clang 475 LD = $(LLVM_PREFIX)ld.lld$(LLVM_S !! 448 LD = ld.lld 476 AR = $(LLVM_PREFIX)llvm-ar$(LLVM_ !! 449 AR = llvm-ar 477 NM = $(LLVM_PREFIX)llvm-nm$(LLVM_ !! 450 NM = llvm-nm 478 OBJCOPY = $(LLVM_PREFIX)llvm-objcopy$( !! 451 OBJCOPY = llvm-objcopy 479 OBJDUMP = $(LLVM_PREFIX)llvm-objdump$( !! 452 OBJDUMP = llvm-objdump 480 READELF = $(LLVM_PREFIX)llvm-readelf$( !! 453 READELF = llvm-readelf 481 STRIP = $(LLVM_PREFIX)llvm-strip$(LL !! 454 STRIP = llvm-strip 482 else 455 else 483 CC = $(CROSS_COMPILE)gcc 456 CC = $(CROSS_COMPILE)gcc 484 LD = $(CROSS_COMPILE)ld 457 LD = $(CROSS_COMPILE)ld 485 AR = $(CROSS_COMPILE)ar 458 AR = $(CROSS_COMPILE)ar 486 NM = $(CROSS_COMPILE)nm 459 NM = $(CROSS_COMPILE)nm 487 OBJCOPY = $(CROSS_COMPILE)objcopy 460 OBJCOPY = $(CROSS_COMPILE)objcopy 488 OBJDUMP = $(CROSS_COMPILE)objdump 461 OBJDUMP = $(CROSS_COMPILE)objdump 489 READELF = $(CROSS_COMPILE)readelf 462 READELF = $(CROSS_COMPILE)readelf 490 STRIP = $(CROSS_COMPILE)strip 463 STRIP = $(CROSS_COMPILE)strip 491 endif 464 endif 492 RUSTC = rustc << 493 RUSTDOC = rustdoc << 494 RUSTFMT = rustfmt << 495 CLIPPY_DRIVER = clippy-driver << 496 BINDGEN = bindgen << 497 PAHOLE = pahole 465 PAHOLE = pahole 498 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve 466 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve_btfids/resolve_btfids 499 LEX = flex 467 LEX = flex 500 YACC = bison 468 YACC = bison 501 AWK = awk 469 AWK = awk 502 INSTALLKERNEL := installkernel 470 INSTALLKERNEL := installkernel >> 471 DEPMOD = depmod 503 PERL = perl 472 PERL = perl 504 PYTHON3 = python3 473 PYTHON3 = python3 505 CHECK = sparse 474 CHECK = sparse 506 BASH = bash 475 BASH = bash 507 KGZIP = gzip 476 KGZIP = gzip 508 KBZIP2 = bzip2 477 KBZIP2 = bzip2 509 KLZOP = lzop 478 KLZOP = lzop 510 LZMA = lzma 479 LZMA = lzma 511 LZ4 = lz4c 480 LZ4 = lz4c 512 XZ = xz 481 XZ = xz 513 ZSTD = zstd 482 ZSTD = zstd 514 483 515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC 484 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 516 -Wbitwise -Wno-return-void - 485 -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 517 NOSTDINC_FLAGS := 486 NOSTDINC_FLAGS := 518 CFLAGS_MODULE = 487 CFLAGS_MODULE = 519 RUSTFLAGS_MODULE = << 520 AFLAGS_MODULE = 488 AFLAGS_MODULE = 521 LDFLAGS_MODULE = 489 LDFLAGS_MODULE = 522 CFLAGS_KERNEL = 490 CFLAGS_KERNEL = 523 RUSTFLAGS_KERNEL = << 524 AFLAGS_KERNEL = 491 AFLAGS_KERNEL = 525 LDFLAGS_vmlinux = 492 LDFLAGS_vmlinux = 526 493 527 # Use USERINCLUDE when you must reference the 494 # Use USERINCLUDE when you must reference the UAPI directories only. 528 USERINCLUDE := \ 495 USERINCLUDE := \ 529 -I$(srctree)/arch/$(SRCARCH)/i 496 -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 530 -I$(objtree)/arch/$(SRCARCH)/i 497 -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 531 -I$(srctree)/include/uapi \ 498 -I$(srctree)/include/uapi \ 532 -I$(objtree)/include/generated 499 -I$(objtree)/include/generated/uapi \ 533 -include $(srctree)/include/li 500 -include $(srctree)/include/linux/compiler-version.h \ 534 -include $(srctree)/include/li 501 -include $(srctree)/include/linux/kconfig.h 535 502 536 # Use LINUXINCLUDE when you must reference the 503 # Use LINUXINCLUDE when you must reference the include/ directory. 537 # Needed to be compatible with the O= option 504 # Needed to be compatible with the O= option 538 LINUXINCLUDE := \ 505 LINUXINCLUDE := \ 539 -I$(srctree)/arch/$(SRCARCH)/i 506 -I$(srctree)/arch/$(SRCARCH)/include \ 540 -I$(objtree)/arch/$(SRCARCH)/i 507 -I$(objtree)/arch/$(SRCARCH)/include/generated \ 541 $(if $(building_out_of_srctree 508 $(if $(building_out_of_srctree),-I$(srctree)/include) \ 542 -I$(objtree)/include \ 509 -I$(objtree)/include \ 543 $(USERINCLUDE) 510 $(USERINCLUDE) 544 511 545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 512 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 546 !! 513 KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ 547 KBUILD_CFLAGS := !! 514 -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ 548 KBUILD_CFLAGS += -std=gnu11 !! 515 -Werror=implicit-function-declaration -Werror=implicit-int \ 549 KBUILD_CFLAGS += -fshort-wchar !! 516 -Werror=return-type -Wno-format-security \ 550 KBUILD_CFLAGS += -funsigned-char !! 517 -std=gnu89 551 KBUILD_CFLAGS += -fno-common << 552 KBUILD_CFLAGS += -fno-PIE << 553 KBUILD_CFLAGS += -fno-strict-aliasing << 554 << 555 KBUILD_CPPFLAGS := -D__KERNEL__ 518 KBUILD_CPPFLAGS := -D__KERNEL__ 556 KBUILD_RUSTFLAGS := $(rust_common_flags) \ << 557 -Cpanic=abort -Cembed-bitc << 558 -Cforce-unwind-tables=n -C << 559 -Csymbol-mangling-version= << 560 -Crelocation-model=static << 561 -Zfunction-sections=n \ << 562 -Wclippy::float_arithmetic << 563 << 564 KBUILD_AFLAGS_KERNEL := 519 KBUILD_AFLAGS_KERNEL := 565 KBUILD_CFLAGS_KERNEL := 520 KBUILD_CFLAGS_KERNEL := 566 KBUILD_RUSTFLAGS_KERNEL := << 567 KBUILD_AFLAGS_MODULE := -DMODULE 521 KBUILD_AFLAGS_MODULE := -DMODULE 568 KBUILD_CFLAGS_MODULE := -DMODULE 522 KBUILD_CFLAGS_MODULE := -DMODULE 569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE << 570 KBUILD_LDFLAGS_MODULE := 523 KBUILD_LDFLAGS_MODULE := 571 KBUILD_LDFLAGS := 524 KBUILD_LDFLAGS := 572 CLANG_FLAGS := 525 CLANG_FLAGS := 573 526 574 ifeq ($(KBUILD_CLIPPY),1) !! 527 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC 575 RUSTC_OR_CLIPPY_QUIET := CLIPPY << 576 RUSTC_OR_CLIPPY = $(CLIPPY_DRIVER) << 577 else << 578 RUSTC_OR_CLIPPY_QUIET := RUSTC << 579 RUSTC_OR_CLIPPY = $(RUSTC) << 580 endif << 581 << 582 # Allows the usage of unstable features in sta << 583 export RUSTC_BOOTSTRAP := 1 << 584 << 585 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K << 586 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q << 587 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS << 588 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF 528 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF PAHOLE RESOLVE_BTFIDS LEX YACC AWK INSTALLKERNEL 589 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ 529 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX 590 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD 530 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD 591 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS 531 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE 592 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS << 593 532 594 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC 533 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 595 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU 534 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 596 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF << 597 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 535 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 598 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 536 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 599 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 537 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 600 538 601 # Files to ignore in find ... statements 539 # Files to ignore in find ... statements 602 540 603 export RCS_FIND_IGNORE := \( -name SCCS -o -na 541 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 604 -name CVS -o -name . 542 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 605 -prune -o 543 -prune -o >> 544 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ >> 545 --exclude CVS --exclude .pc --exclude .hg --exclude .git 606 546 607 # ============================================ 547 # =========================================================================== 608 # Rules shared between *config targets and bui 548 # Rules shared between *config targets and build targets 609 549 610 # Basic helpers built in scripts/basic/ 550 # Basic helpers built in scripts/basic/ 611 PHONY += scripts_basic 551 PHONY += scripts_basic 612 scripts_basic: 552 scripts_basic: 613 $(Q)$(MAKE) $(build)=scripts/basic 553 $(Q)$(MAKE) $(build)=scripts/basic >> 554 $(Q)rm -f .tmp_quiet_recordmcount 614 555 615 PHONY += outputmakefile 556 PHONY += outputmakefile 616 ifdef building_out_of_srctree << 617 # Before starting out-of-tree build, make sure 557 # Before starting out-of-tree build, make sure the source tree is clean. 618 # outputmakefile generates a Makefile in the o 558 # outputmakefile generates a Makefile in the output directory, if using a 619 # separate output directory. This allows conve 559 # separate output directory. This allows convenient use of make in the 620 # output directory. 560 # output directory. 621 # At the same time when output Makefile genera 561 # At the same time when output Makefile generated, generate .gitignore to 622 # ignore whole output directory 562 # ignore whole output directory 623 << 624 quiet_cmd_makefile = GEN Makefile << 625 cmd_makefile = { \ << 626 echo "\# Automatically generated by $( << 627 echo "include $(srctree)/Makefile"; \ << 628 } > Makefile << 629 << 630 outputmakefile: 563 outputmakefile: 631 @if [ -f $(srctree)/.config -o \ !! 564 ifdef building_out_of_srctree >> 565 $(Q)if [ -f $(srctree)/.config -o \ 632 -d $(srctree)/include/config 566 -d $(srctree)/include/config -o \ 633 -d $(srctree)/arch/$(SRCARCH) 567 -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \ 634 echo >&2 "***"; \ 568 echo >&2 "***"; \ 635 echo >&2 "*** The source tree 569 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 570 echo >&2 "*** in $(abs_srctree)";\ 637 echo >&2 "***"; \ 571 echo >&2 "***"; \ 638 false; \ 572 false; \ 639 fi 573 fi 640 $(Q)ln -fsn $(srctree) source 574 $(Q)ln -fsn $(srctree) source 641 $(call cmd,makefile) !! 575 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) 642 $(Q)test -e .gitignore || \ 576 $(Q)test -e .gitignore || \ 643 { echo "# this is build directory, ign 577 { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore 644 endif 578 endif 645 579 646 # The expansion should be delayed until arch/$ 580 # The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 647 # Some architectures define CROSS_COMPILE in a 581 # Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 648 # CC_VERSION_TEXT and RUSTC_VERSION_TEXT are r !! 582 # CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 649 # need export), and from include/config/auto.c !! 583 # and from include/config/auto.conf.cmd to detect the compiler upgrade. 650 # upgrade. !! 584 CC_VERSION_TEXT = $(subst $(pound),,$(shell $(CC) --version 2>/dev/null | head -n 1)) 651 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC << 652 RUSTC_VERSION_TEXT = $(subst $(pound),,$(shell << 653 585 654 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), 586 ifneq ($(findstring clang,$(CC_VERSION_TEXT)),) 655 include $(srctree)/scripts/Makefile.clang !! 587 ifneq ($(CROSS_COMPILE),) >> 588 CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) >> 589 endif >> 590 ifeq ($(LLVM_IAS),1) >> 591 CLANG_FLAGS += -integrated-as >> 592 else >> 593 CLANG_FLAGS += -no-integrated-as >> 594 GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) >> 595 CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE)) >> 596 endif >> 597 CLANG_FLAGS += -Werror=unknown-warning-option >> 598 KBUILD_CFLAGS += $(CLANG_FLAGS) >> 599 KBUILD_AFLAGS += $(CLANG_FLAGS) >> 600 export CLANG_FLAGS 656 endif 601 endif 657 602 658 # Include this also for config targets because 603 # Include this also for config targets because some architectures need 659 # cc-cross-prefix to determine CROSS_COMPILE. 604 # cc-cross-prefix to determine CROSS_COMPILE. 660 ifdef need-compiler 605 ifdef need-compiler 661 include $(srctree)/scripts/Makefile.compiler 606 include $(srctree)/scripts/Makefile.compiler 662 endif 607 endif 663 608 664 ifdef config-build 609 ifdef config-build 665 # ============================================ 610 # =========================================================================== 666 # *config targets only - make sure prerequisit 611 # *config targets only - make sure prerequisites are updated, and descend 667 # in scripts/kconfig to make the *config targe 612 # in scripts/kconfig to make the *config target 668 613 669 # Read arch-specific Makefile to set KBUILD_DE !! 614 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 670 # KBUILD_DEFCONFIG may point out an alternativ 615 # KBUILD_DEFCONFIG may point out an alternative default configuration 671 # used for 'make defconfig' 616 # used for 'make defconfig' 672 include $(srctree)/arch/$(SRCARCH)/Makefile 617 include $(srctree)/arch/$(SRCARCH)/Makefile 673 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS !! 618 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 674 619 675 config: outputmakefile scripts_basic FORCE 620 config: outputmakefile scripts_basic FORCE 676 $(Q)$(MAKE) $(build)=scripts/kconfig $ 621 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 677 622 678 %config: outputmakefile scripts_basic FORCE 623 %config: outputmakefile scripts_basic FORCE 679 $(Q)$(MAKE) $(build)=scripts/kconfig $ 624 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 680 625 681 else #!config-build 626 else #!config-build 682 # ============================================ 627 # =========================================================================== 683 # Build targets only - this includes vmlinux, !! 628 # Build targets only - this includes vmlinux, arch specific targets, clean 684 # targets and others. In general all targets e 629 # targets and others. In general all targets except *config targets. 685 630 686 # If building an external module we do not car 631 # If building an external module we do not care about the all: rule 687 # but instead __all depend on modules 632 # but instead __all depend on modules 688 PHONY += all 633 PHONY += all 689 ifeq ($(KBUILD_EXTMOD),) 634 ifeq ($(KBUILD_EXTMOD),) 690 __all: all 635 __all: all 691 else 636 else 692 __all: modules 637 __all: modules 693 endif 638 endif 694 639 695 targets := << 696 << 697 # Decide whether to build built-in, modular, o 640 # Decide whether to build built-in, modular, or both. 698 # Normally, just do built-in. 641 # Normally, just do built-in. 699 642 700 KBUILD_MODULES := 643 KBUILD_MODULES := 701 KBUILD_BUILTIN := 1 644 KBUILD_BUILTIN := 1 702 645 703 # If we have only "make modules", don't compil 646 # If we have only "make modules", don't compile built-in objects. 704 ifeq ($(MAKECMDGOALS),modules) 647 ifeq ($(MAKECMDGOALS),modules) 705 KBUILD_BUILTIN := 648 KBUILD_BUILTIN := 706 endif 649 endif 707 650 708 # If we have "make <whatever> modules", compil 651 # If we have "make <whatever> modules", compile modules 709 # in addition to whatever we do anyway. 652 # in addition to whatever we do anyway. 710 # Just "make" or "make all" shall build module 653 # Just "make" or "make all" shall build modules as well 711 654 712 ifneq ($(filter all modules nsdeps %compile_co 655 ifneq ($(filter all modules nsdeps %compile_commands.json clang-%,$(MAKECMDGOALS)),) 713 KBUILD_MODULES := 1 656 KBUILD_MODULES := 1 714 endif 657 endif 715 658 716 ifeq ($(MAKECMDGOALS),) 659 ifeq ($(MAKECMDGOALS),) 717 KBUILD_MODULES := 1 660 KBUILD_MODULES := 1 718 endif 661 endif 719 662 720 export KBUILD_MODULES KBUILD_BUILTIN 663 export KBUILD_MODULES KBUILD_BUILTIN 721 664 722 ifdef need-config 665 ifdef need-config 723 include include/config/auto.conf 666 include include/config/auto.conf 724 endif 667 endif 725 668 726 ifeq ($(KBUILD_EXTMOD),) 669 ifeq ($(KBUILD_EXTMOD),) 727 # Objects we will link into vmlinux / subdirs 670 # Objects we will link into vmlinux / subdirs we need to visit 728 core-y := !! 671 core-y := init/ usr/ 729 drivers-y := !! 672 drivers-y := drivers/ sound/ >> 673 drivers-$(CONFIG_SAMPLES) += samples/ >> 674 drivers-$(CONFIG_NET) += net/ >> 675 drivers-y += virt/ 730 libs-y := lib/ 676 libs-y := lib/ 731 endif # KBUILD_EXTMOD 677 endif # KBUILD_EXTMOD 732 678 733 # The all: target is the default when no targe 679 # The all: target is the default when no target is given on the 734 # command line. 680 # command line. 735 # This allow a user to issue only 'make' to bu 681 # This allow a user to issue only 'make' to build a kernel including modules 736 # Defaults to vmlinux, but the arch makefile u 682 # Defaults to vmlinux, but the arch makefile usually adds further targets 737 all: vmlinux 683 all: vmlinux 738 684 739 CFLAGS_GCOV := -fprofile-arcs -ftest-cover !! 685 CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ 740 ifdef CONFIG_CC_IS_GCC !! 686 $(call cc-option,-fno-tree-loop-im) \ 741 CFLAGS_GCOV += -fno-tree-loop-im !! 687 $(call cc-disable-warning,maybe-uninitialized,) 742 endif << 743 export CFLAGS_GCOV 688 export CFLAGS_GCOV 744 689 745 # The arch Makefiles can override CC_FLAGS_FTR 690 # The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. 746 ifdef CONFIG_FUNCTION_TRACER 691 ifdef CONFIG_FUNCTION_TRACER 747 CC_FLAGS_FTRACE := -pg 692 CC_FLAGS_FTRACE := -pg 748 endif 693 endif 749 694 >> 695 RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register >> 696 RETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register >> 697 RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk >> 698 RETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline >> 699 RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG))) >> 700 RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG))) >> 701 export RETPOLINE_CFLAGS >> 702 export RETPOLINE_VDSO_CFLAGS >> 703 750 include $(srctree)/arch/$(SRCARCH)/Makefile 704 include $(srctree)/arch/$(SRCARCH)/Makefile 751 705 752 ifdef need-config 706 ifdef need-config 753 ifdef may-sync-config 707 ifdef may-sync-config 754 # Read in dependencies to all Kconfig* files, 708 # Read in dependencies to all Kconfig* files, make sure to run syncconfig if 755 # changes are detected. This should be include 709 # changes are detected. This should be included after arch/$(SRCARCH)/Makefile 756 # because some architectures define CROSS_COMP 710 # because some architectures define CROSS_COMPILE there. 757 include include/config/auto.conf.cmd 711 include include/config/auto.conf.cmd 758 712 759 $(KCONFIG_CONFIG): 713 $(KCONFIG_CONFIG): 760 @echo >&2 '***' 714 @echo >&2 '***' 761 @echo >&2 '*** Configuration file "$@" 715 @echo >&2 '*** Configuration file "$@" not found!' 762 @echo >&2 '***' 716 @echo >&2 '***' 763 @echo >&2 '*** Please run some configu 717 @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or' 764 @echo >&2 '*** "make menuconfig" or "m 718 @echo >&2 '*** "make menuconfig" or "make xconfig").' 765 @echo >&2 '***' 719 @echo >&2 '***' 766 @/bin/false 720 @/bin/false 767 721 768 # The actual configuration files used during t 722 # The actual configuration files used during the build are stored in 769 # include/generated/ and include/config/. Upda 723 # include/generated/ and include/config/. Update them if .config is newer than 770 # include/config/auto.conf (which mirrors .con 724 # include/config/auto.conf (which mirrors .config). 771 # 725 # 772 # This exploits the 'multi-target pattern rule 726 # This exploits the 'multi-target pattern rule' trick. 773 # The syncconfig should be executed only once 727 # The syncconfig should be executed only once to make all the targets. 774 # (Note: use the grouped target '&:' when we b 728 # (Note: use the grouped target '&:' when we bump to GNU Make 4.3) 775 # 729 # 776 # Do not use $(call cmd,...) here. That would 730 # Do not use $(call cmd,...) here. That would suppress prompts from syncconfig, 777 # so you cannot notice that Kconfig is waiting 731 # so you cannot notice that Kconfig is waiting for the user input. 778 %/config/auto.conf %/config/auto.conf.cmd %/ge !! 732 %/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h: $(KCONFIG_CONFIG) 779 $(Q)$(kecho) " SYNC $@" 733 $(Q)$(kecho) " SYNC $@" 780 $(Q)$(MAKE) -f $(srctree)/Makefile syn 734 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 781 else # !may-sync-config 735 else # !may-sync-config 782 # External modules and some install targets ne 736 # External modules and some install targets need include/generated/autoconf.h 783 # and include/config/auto.conf but do not care 737 # and include/config/auto.conf but do not care if they are up-to-date. 784 # Use auto.conf to trigger the test 738 # Use auto.conf to trigger the test 785 PHONY += include/config/auto.conf 739 PHONY += include/config/auto.conf 786 740 787 include/config/auto.conf: 741 include/config/auto.conf: 788 @test -e include/generated/autoconf.h !! 742 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 789 echo >&2; 743 echo >&2; \ 790 echo >&2 " ERROR: Kernel configuratio 744 echo >&2 " ERROR: Kernel configuration is invalid."; \ 791 echo >&2 " include/generated/a 745 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 792 echo >&2 " Run 'make oldconfig 746 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 793 echo >&2 ; 747 echo >&2 ; \ 794 /bin/false) 748 /bin/false) 795 749 796 endif # may-sync-config 750 endif # may-sync-config 797 endif # need-config 751 endif # need-config 798 752 799 KBUILD_CFLAGS += -fno-delete-null-pointer-ch !! 753 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) >> 754 KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) >> 755 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) >> 756 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) >> 757 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 800 758 801 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 759 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 802 KBUILD_CFLAGS += -O2 760 KBUILD_CFLAGS += -O2 803 KBUILD_RUSTFLAGS += -Copt-level=2 !! 761 else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 >> 762 KBUILD_CFLAGS += -O3 804 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 763 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 805 KBUILD_CFLAGS += -Os 764 KBUILD_CFLAGS += -Os 806 KBUILD_RUSTFLAGS += -Copt-level=s << 807 endif 765 endif 808 766 809 # Always set `debug-assertions` and `overflow- << 810 # depends on `opt-level` and `debug-assertions << 811 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( << 812 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C << 813 << 814 # Tell gcc to never replace conditional load w 767 # Tell gcc to never replace conditional load with a non-conditional one 815 ifdef CONFIG_CC_IS_GCC << 816 # gcc-10 renamed --param=allow-store-data-race << 817 # -fno-allow-store-data-races. << 818 KBUILD_CFLAGS += $(call cc-option,--param=al 768 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 819 KBUILD_CFLAGS += $(call cc-option,-fno-allow 769 KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) 820 endif << 821 770 822 ifdef CONFIG_READABLE_ASM 771 ifdef CONFIG_READABLE_ASM 823 # Disable optimizations that make assembler li 772 # Disable optimizations that make assembler listings hard to read. 824 # reorder blocks reorders the control in the f 773 # reorder blocks reorders the control in the function 825 # ipa clone creates specialized cloned functio 774 # ipa clone creates specialized cloned functions 826 # partial inlining inlines only parts of funct 775 # partial inlining inlines only parts of functions 827 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- !! 776 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ >> 777 $(call cc-option,-fno-ipa-cp-clone,) \ >> 778 $(call cc-option,-fno-partial-inlining) >> 779 endif >> 780 >> 781 ifneq ($(CONFIG_FRAME_WARN),0) >> 782 KBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN) 828 endif 783 endif 829 784 830 stackp-flags-y 785 stackp-flags-y := -fno-stack-protector 831 stackp-flags-$(CONFIG_STACKPROTECTOR) 786 stackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector 832 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) 787 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong 833 788 834 KBUILD_CFLAGS += $(stackp-flags-y) 789 KBUILD_CFLAGS += $(stackp-flags-y) 835 790 836 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning !! 791 ifdef CONFIG_CC_IS_CLANG 837 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) !! 792 KBUILD_CPPFLAGS += -Qunused-arguments >> 793 KBUILD_CFLAGS += -Wno-format-invalid-specifier >> 794 KBUILD_CFLAGS += -Wno-gnu >> 795 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the >> 796 # source of a reference will be _MergedGlobals and not on of the whitelisted names. >> 797 # See modpost pattern 2 >> 798 KBUILD_CFLAGS += -mno-global-merge >> 799 else 838 800 >> 801 # Warn about unmarked fall-throughs in switch statement. >> 802 # Disabled for clang while comment to attribute conversion happens and >> 803 # https://github.com/ClangBuiltLinux/linux/issues/636 is discussed. >> 804 KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,) >> 805 endif >> 806 >> 807 # These warnings generated too much noise in a regular build. >> 808 # Use make W=1 to enable them (see scripts/Makefile.extrawarn) >> 809 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) >> 810 >> 811 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) 839 ifdef CONFIG_FRAME_POINTER 812 ifdef CONFIG_FRAME_POINTER 840 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 813 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 841 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y << 842 else 814 else 843 # Some targets (ARM with Thumb2, for example), 815 # Some targets (ARM with Thumb2, for example), can't be built with frame 844 # pointers. For those, we don't have FUNCTION 816 # pointers. For those, we don't have FUNCTION_TRACER automatically 845 # select FRAME_POINTER. However, FUNCTION_TRA 817 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 846 # incompatible with -fomit-frame-pointer with 818 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 847 # -fomit-frame-pointer with FUNCTION_TRACER. 819 # -fomit-frame-pointer with FUNCTION_TRACER. 848 # In the Rust target specification, "frame-poi << 849 # to "may-omit". << 850 ifndef CONFIG_FUNCTION_TRACER 820 ifndef CONFIG_FUNCTION_TRACER 851 KBUILD_CFLAGS += -fomit-frame-pointer 821 KBUILD_CFLAGS += -fomit-frame-pointer 852 endif 822 endif 853 endif 823 endif 854 824 855 # Initialize all stack variables with a 0xAA p 825 # Initialize all stack variables with a 0xAA pattern. 856 ifdef CONFIG_INIT_STACK_ALL_PATTERN 826 ifdef CONFIG_INIT_STACK_ALL_PATTERN 857 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat 827 KBUILD_CFLAGS += -ftrivial-auto-var-init=pattern 858 endif 828 endif 859 829 860 # Initialize all stack variables with a zero v 830 # Initialize all stack variables with a zero value. 861 ifdef CONFIG_INIT_STACK_ALL_ZERO 831 ifdef CONFIG_INIT_STACK_ALL_ZERO >> 832 # Future support for zero initialization is still being debated, see >> 833 # https://bugs.llvm.org/show_bug.cgi?id=45497. These flags are subject to being >> 834 # renamed or dropped. 862 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer 835 KBUILD_CFLAGS += -ftrivial-auto-var-init=zero 863 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER !! 836 KBUILD_CFLAGS += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang 864 # https://github.com/llvm/llvm-project/issues/ << 865 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi << 866 export CC_AUTO_VAR_INIT_ZERO_ENABLER << 867 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA << 868 endif << 869 endif 837 endif 870 838 871 # While VLAs have been removed, GCC produces u 839 # While VLAs have been removed, GCC produces unreachable stack probes 872 # for the randomize_kstack_offset feature. Dis 840 # for the randomize_kstack_offset feature. Disable it for all compilers. 873 KBUILD_CFLAGS += $(call cc-option, -fno-stac 841 KBUILD_CFLAGS += $(call cc-option, -fno-stack-clash-protection) 874 842 875 # Clear used registers at func exit (to reduce !! 843 DEBUG_CFLAGS := 876 ifdef CONFIG_ZERO_CALL_USED_REGS !! 844 877 KBUILD_CFLAGS += -fzero-call-used-regs=used- !! 845 # Workaround for GCC versions < 5.0 >> 846 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801 >> 847 ifdef CONFIG_CC_IS_GCC >> 848 DEBUG_CFLAGS += $(call cc-ifversion, -lt, 0500, $(call cc-option, -fno-var-tracking-assignments)) >> 849 endif >> 850 >> 851 ifdef CONFIG_DEBUG_INFO >> 852 >> 853 ifdef CONFIG_DEBUG_INFO_SPLIT >> 854 DEBUG_CFLAGS += -gsplit-dwarf >> 855 else >> 856 DEBUG_CFLAGS += -g >> 857 endif >> 858 >> 859 ifneq ($(LLVM_IAS),1) >> 860 KBUILD_AFLAGS += -Wa,-gdwarf-2 >> 861 endif >> 862 >> 863 ifndef CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT >> 864 dwarf-version-$(CONFIG_DEBUG_INFO_DWARF4) := 4 >> 865 dwarf-version-$(CONFIG_DEBUG_INFO_DWARF5) := 5 >> 866 DEBUG_CFLAGS += -gdwarf-$(dwarf-version-y) >> 867 endif >> 868 >> 869 ifdef CONFIG_DEBUG_INFO_REDUCED >> 870 DEBUG_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ >> 871 $(call cc-option,-fno-var-tracking) >> 872 endif >> 873 >> 874 ifdef CONFIG_DEBUG_INFO_COMPRESSED >> 875 DEBUG_CFLAGS += -gz=zlib >> 876 KBUILD_AFLAGS += -gz=zlib >> 877 KBUILD_LDFLAGS += --compress-debug-sections=zlib 878 endif 878 endif 879 879 >> 880 endif # CONFIG_DEBUG_INFO >> 881 >> 882 KBUILD_CFLAGS += $(DEBUG_CFLAGS) >> 883 export DEBUG_CFLAGS >> 884 880 ifdef CONFIG_FUNCTION_TRACER 885 ifdef CONFIG_FUNCTION_TRACER 881 ifdef CONFIG_FTRACE_MCOUNT_USE_CC 886 ifdef CONFIG_FTRACE_MCOUNT_USE_CC 882 CC_FLAGS_FTRACE += -mrecord-mcount 887 CC_FLAGS_FTRACE += -mrecord-mcount 883 ifdef CONFIG_HAVE_NOP_MCOUNT 888 ifdef CONFIG_HAVE_NOP_MCOUNT 884 ifeq ($(call cc-option-yn, -mnop-mcount),y 889 ifeq ($(call cc-option-yn, -mnop-mcount),y) 885 CC_FLAGS_FTRACE += -mnop-mcount 890 CC_FLAGS_FTRACE += -mnop-mcount 886 CC_FLAGS_USING += -DCC_USING_NOP_MCOU 891 CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 887 endif 892 endif 888 endif 893 endif 889 endif 894 endif 890 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL 895 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL 891 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT !! 896 CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 892 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 893 endif << 894 endif 897 endif 895 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT 898 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT 896 ifdef CONFIG_HAVE_C_RECORDMCOUNT 899 ifdef CONFIG_HAVE_C_RECORDMCOUNT 897 BUILD_C_RECORDMCOUNT := y 900 BUILD_C_RECORDMCOUNT := y 898 export BUILD_C_RECORDMCOUNT 901 export BUILD_C_RECORDMCOUNT 899 endif 902 endif 900 endif 903 endif 901 ifdef CONFIG_HAVE_FENTRY 904 ifdef CONFIG_HAVE_FENTRY 902 # s390-linux-gnu-gcc did not support -mfentr << 903 ifeq ($(call cc-option-yn, -mfentry),y) 905 ifeq ($(call cc-option-yn, -mfentry),y) 904 CC_FLAGS_FTRACE += -mfentry 906 CC_FLAGS_FTRACE += -mfentry 905 CC_FLAGS_USING += -DCC_USING_FENTRY 907 CC_FLAGS_USING += -DCC_USING_FENTRY 906 endif 908 endif 907 endif 909 endif 908 export CC_FLAGS_FTRACE 910 export CC_FLAGS_FTRACE 909 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA 911 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 910 KBUILD_AFLAGS += $(CC_FLAGS_USING) 912 KBUILD_AFLAGS += $(CC_FLAGS_USING) 911 endif 913 endif 912 914 913 # We trigger additional mismatches with less i 915 # We trigger additional mismatches with less inlining 914 ifdef CONFIG_DEBUG_SECTION_MISMATCH 916 ifdef CONFIG_DEBUG_SECTION_MISMATCH 915 KBUILD_CFLAGS += -fno-inline-functions-called- !! 917 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 916 endif 918 endif 917 919 918 # `rustc`'s `-Zfunction-sections` applies to d << 919 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 920 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 920 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f 921 KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 921 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections << 922 LDFLAGS_vmlinux += --gc-sections 922 LDFLAGS_vmlinux += --gc-sections 923 endif 923 endif 924 924 925 ifdef CONFIG_SHADOW_CALL_STACK 925 ifdef CONFIG_SHADOW_CALL_STACK 926 ifndef CONFIG_DYNAMIC_SCS << 927 CC_FLAGS_SCS := -fsanitize=shadow-call-stac 926 CC_FLAGS_SCS := -fsanitize=shadow-call-stack 928 KBUILD_CFLAGS += $(CC_FLAGS_SCS) 927 KBUILD_CFLAGS += $(CC_FLAGS_SCS) 929 KBUILD_RUSTFLAGS += -Zsanitizer=shadow-call-st << 930 endif << 931 export CC_FLAGS_SCS 928 export CC_FLAGS_SCS 932 endif 929 endif 933 930 934 ifdef CONFIG_LTO_CLANG 931 ifdef CONFIG_LTO_CLANG 935 ifdef CONFIG_LTO_CLANG_THIN 932 ifdef CONFIG_LTO_CLANG_THIN 936 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit 933 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit >> 934 KBUILD_LDFLAGS += --thinlto-cache-dir=$(extmod_prefix).thinlto-cache 937 else 935 else 938 CC_FLAGS_LTO := -flto 936 CC_FLAGS_LTO := -flto 939 endif 937 endif 940 CC_FLAGS_LTO += -fvisibility=hidden 938 CC_FLAGS_LTO += -fvisibility=hidden 941 939 942 # Limit inlining across translation units to r 940 # Limit inlining across translation units to reduce binary size 943 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 941 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 >> 942 >> 943 # Check for frame size exceeding threshold during prolog/epilog insertion >> 944 # when using lld < 13.0.0. >> 945 ifneq ($(CONFIG_FRAME_WARN),0) >> 946 ifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 130000; echo $$?),0) >> 947 KBUILD_LDFLAGS += -plugin-opt=-warn-stack-size=$(CONFIG_FRAME_WARN) >> 948 endif >> 949 endif 944 endif 950 endif 945 951 946 ifdef CONFIG_LTO 952 ifdef CONFIG_LTO 947 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) 953 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) 948 KBUILD_AFLAGS += -fno-lto 954 KBUILD_AFLAGS += -fno-lto 949 export CC_FLAGS_LTO 955 export CC_FLAGS_LTO 950 endif 956 endif 951 957 952 ifdef CONFIG_CFI_CLANG 958 ifdef CONFIG_CFI_CLANG 953 CC_FLAGS_CFI := -fsanitize=kcfi !! 959 CC_FLAGS_CFI := -fsanitize=cfi \ 954 ifdef CONFIG_CFI_ICALL_NORMALIZE_INTEGERS !! 960 -fsanitize-cfi-cross-dso \ 955 CC_FLAGS_CFI += -fsanitize-cfi-ical !! 961 -fno-sanitize-cfi-canonical-jump-tables \ 956 endif !! 962 -fno-sanitize-trap=cfi \ 957 ifdef CONFIG_RUST !! 963 -fno-sanitize-blacklist 958 # Always pass -Zsanitizer-cfi-normaliz !! 964 959 # CONFIG_CFI_ICALL_NORMALIZE_INTEGERS. !! 965 ifdef CONFIG_CFI_PERMISSIVE 960 RUSTC_FLAGS_CFI := -Zsanitizer=kcfi !! 966 CC_FLAGS_CFI += -fsanitize-recover=cfi 961 KBUILD_RUSTFLAGS += $(RUSTC_FLAGS_CFI) << 962 export RUSTC_FLAGS_CFI << 963 endif 967 endif >> 968 >> 969 # If LTO flags are filtered out, we must also filter out CFI. >> 970 CC_FLAGS_LTO += $(CC_FLAGS_CFI) 964 KBUILD_CFLAGS += $(CC_FLAGS_CFI) 971 KBUILD_CFLAGS += $(CC_FLAGS_CFI) 965 export CC_FLAGS_CFI 972 export CC_FLAGS_CFI 966 endif 973 endif 967 974 968 # Architectures can define flags to add/remove !! 975 ifdef CONFIG_DEBUG_FORCE_FUNCTION_ALIGN_32B 969 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN !! 976 KBUILD_CFLAGS += -falign-functions=32 970 export CC_FLAGS_FPU << 971 export CC_FLAGS_NO_FPU << 972 << 973 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 << 981 endif << 982 endif 977 endif 983 978 984 # arch Makefile may override CC so keep this a 979 # arch Makefile may override CC so keep this after arch Makefile is included 985 NOSTDINC_FLAGS += -nostdinc !! 980 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 986 981 987 # To gain proper coverage for CONFIG_UBSAN_BOU !! 982 # warn about C99 declaration after statement 988 # the kernel uses only C99 flexible arrays for !! 983 KBUILD_CFLAGS += -Wdeclaration-after-statement 989 # arrays. Enforce this for everything that may !! 984 990 # perform bounds checking. !! 985 # Variable Length Arrays (VLAs) should not be used anywhere in the kernel 991 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl !! 986 KBUILD_CFLAGS += -Wvla 992 !! 987 993 #Currently, disable -Wstringop-overflow for GC !! 988 # disable pointer signed / unsigned warnings in gcc 4.0 994 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW !! 989 KBUILD_CFLAGS += -Wno-pointer-sign 995 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + !! 990 >> 991 # disable stringop warnings in gcc 8+ >> 992 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) >> 993 >> 994 # We'll want to enable this eventually, but it's not going away for 5.7 at least >> 995 KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) >> 996 KBUILD_CFLAGS += $(call cc-disable-warning, array-bounds) >> 997 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) >> 998 >> 999 # Another good warning that we'll want to enable eventually >> 1000 KBUILD_CFLAGS += $(call cc-disable-warning, restrict) >> 1001 >> 1002 # Enabled with W=2, disabled by default as noisy >> 1003 KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized) 996 1004 997 # disable invalid "can't wrap" optimizations f 1005 # disable invalid "can't wrap" optimizations for signed / pointers 998 KBUILD_CFLAGS += -fno-strict-overflow 1006 KBUILD_CFLAGS += -fno-strict-overflow 999 1007 1000 # Make sure -fstack-check isn't enabled (like 1008 # Make sure -fstack-check isn't enabled (like gentoo apparently did) 1001 KBUILD_CFLAGS += -fno-stack-check 1009 KBUILD_CFLAGS += -fno-stack-check 1002 1010 1003 # conserve stack if available 1011 # conserve stack if available 1004 ifdef CONFIG_CC_IS_GCC !! 1012 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 1005 KBUILD_CFLAGS += -fconserve-stack !! 1013 1006 endif !! 1014 # Prohibit date/time macros, which would make the build non-deterministic >> 1015 KBUILD_CFLAGS += -Werror=date-time >> 1016 >> 1017 # enforce correct pointer usage >> 1018 KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) >> 1019 >> 1020 # Require designated initializers for all marked structures >> 1021 KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 1007 1022 1008 # change __FILE__ to the relative path from t 1023 # change __FILE__ to the relative path from the srctree 1009 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p 1024 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 1010 1025 1011 # include additional Makefiles when needed 1026 # include additional Makefiles when needed 1012 include-y := scripts/Ma 1027 include-y := scripts/Makefile.extrawarn 1013 include-$(CONFIG_DEBUG_INFO) += scripts/Ma << 1014 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma << 1015 include-$(CONFIG_KASAN) += scripts/Ma 1028 include-$(CONFIG_KASAN) += scripts/Makefile.kasan 1016 include-$(CONFIG_KCSAN) += scripts/Ma 1029 include-$(CONFIG_KCSAN) += scripts/Makefile.kcsan 1017 include-$(CONFIG_KMSAN) += scripts/Ma << 1018 include-$(CONFIG_UBSAN) += scripts/Ma 1030 include-$(CONFIG_UBSAN) += scripts/Makefile.ubsan 1019 include-$(CONFIG_KCOV) += scripts/Ma 1031 include-$(CONFIG_KCOV) += scripts/Makefile.kcov 1020 include-$(CONFIG_RANDSTRUCT) += scripts/Ma << 1021 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma 1032 include-$(CONFIG_GCC_PLUGINS) += scripts/Makefile.gcc-plugins 1022 1033 1023 include $(addprefix $(srctree)/, $(include-y) 1034 include $(addprefix $(srctree)/, $(include-y)) 1024 1035 1025 # scripts/Makefile.gcc-plugins is intentional 1036 # scripts/Makefile.gcc-plugins is intentionally included last. 1026 # Do not add $(call cc-option,...) below this 1037 # Do not add $(call cc-option,...) below this line. When you build the kernel 1027 # from the clean source tree, the GCC plugins 1038 # from the clean source tree, the GCC plugins do not exist at this point. 1028 1039 1029 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS !! 1040 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 1030 KBUILD_CPPFLAGS += $(KCPPFLAGS) 1041 KBUILD_CPPFLAGS += $(KCPPFLAGS) 1031 KBUILD_AFLAGS += $(KAFLAGS) 1042 KBUILD_AFLAGS += $(KAFLAGS) 1032 KBUILD_CFLAGS += $(KCFLAGS) 1043 KBUILD_CFLAGS += $(KCFLAGS) 1033 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) << 1034 1044 1035 KBUILD_LDFLAGS_MODULE += --build-id=sha1 1045 KBUILD_LDFLAGS_MODULE += --build-id=sha1 1036 LDFLAGS_vmlinux += --build-id=sha1 1046 LDFLAGS_vmlinux += --build-id=sha1 1037 1047 1038 KBUILD_LDFLAGS += -z noexecstack << 1039 ifeq ($(CONFIG_LD_IS_BFD),y) << 1040 KBUILD_LDFLAGS += $(call ld-option,--no-warn << 1041 endif << 1042 << 1043 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1048 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1044 LDFLAGS_vmlinux += -X !! 1049 LDFLAGS_vmlinux += $(call ld-option, -X,) 1045 endif 1050 endif 1046 1051 1047 ifeq ($(CONFIG_RELR),y) 1052 ifeq ($(CONFIG_RELR),y) 1048 # ld.lld before 15 did not support -z pack-re !! 1053 LDFLAGS_vmlinux += --pack-dyn-relocs=relr --use-android-relr-tags 1049 LDFLAGS_vmlinux += $(call ld-option,--pack-dy << 1050 endif 1054 endif 1051 1055 1052 # We never want expected sections to be place 1056 # We never want expected sections to be placed heuristically by the 1053 # linker. All sections should be explicitly n 1057 # linker. All sections should be explicitly named in the linker script. 1054 ifdef CONFIG_LD_ORPHAN_WARN 1058 ifdef CONFIG_LD_ORPHAN_WARN 1055 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG !! 1059 LDFLAGS_vmlinux += --orphan-handling=warn 1056 endif 1060 endif 1057 1061 1058 # Align the bit size of userspace programs wi 1062 # Align the bit size of userspace programs with the kernel 1059 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta 1063 KBUILD_USERCFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 1060 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta 1064 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 1061 1065 1062 # make the checker run with the right archite 1066 # make the checker run with the right architecture 1063 CHECKFLAGS += --arch=$(ARCH) 1067 CHECKFLAGS += --arch=$(ARCH) 1064 1068 1065 # insure the checker run with the right endia 1069 # insure the checker run with the right endianness 1066 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- 1070 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 1067 1071 1068 # the checker needs the correct machine size 1072 # the checker needs the correct machine size 1069 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1073 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1070 1074 1071 # Default kernel image to build when no speci 1075 # Default kernel image to build when no specific target is given. 1072 # KBUILD_IMAGE may be overruled on the comman 1076 # KBUILD_IMAGE may be overruled on the command line or 1073 # set in the environment 1077 # set in the environment 1074 # Also any assignments in arch/$(ARCH)/Makefi 1078 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 1075 # this default value 1079 # this default value 1076 export KBUILD_IMAGE ?= vmlinux 1080 export KBUILD_IMAGE ?= vmlinux 1077 1081 1078 # 1082 # 1079 # INSTALL_PATH specifies where to place the u 1083 # INSTALL_PATH specifies where to place the updated kernel and system map 1080 # images. Default is /boot, but you can set i 1084 # images. Default is /boot, but you can set it to other values 1081 export INSTALL_PATH ?= /boot 1085 export INSTALL_PATH ?= /boot 1082 1086 1083 # 1087 # 1084 # INSTALL_DTBS_PATH specifies a prefix for re 1088 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1085 # Like INSTALL_MOD_PATH, it isn't defined in 1089 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1086 # an argument if needed. Otherwise it default 1090 # an argument if needed. Otherwise it defaults to the kernel install path 1087 # 1091 # 1088 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d 1092 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1089 1093 1090 # 1094 # 1091 # INSTALL_MOD_PATH specifies a prefix to MODL 1095 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1092 # relocations required by build roots. This 1096 # relocations required by build roots. This is not defined in the 1093 # makefile but the argument can be passed to 1097 # makefile but the argument can be passed to make if needed. 1094 # 1098 # 1095 1099 1096 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 1100 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1097 export MODLIB 1101 export MODLIB 1098 1102 >> 1103 HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf) >> 1104 >> 1105 has_libelf = $(call try-run,\ >> 1106 echo "int main() {}" | $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0) >> 1107 >> 1108 ifdef CONFIG_STACK_VALIDATION >> 1109 ifeq ($(has_libelf),1) >> 1110 objtool_target := tools/objtool FORCE >> 1111 else >> 1112 SKIP_STACK_VALIDATION := 1 >> 1113 export SKIP_STACK_VALIDATION >> 1114 endif >> 1115 endif >> 1116 >> 1117 PHONY += resolve_btfids_clean >> 1118 >> 1119 resolve_btfids_O = $(abspath $(objtree))/tools/bpf/resolve_btfids >> 1120 >> 1121 # tools/bpf/resolve_btfids directory might not exist >> 1122 # in output directory, skip its clean in that case >> 1123 resolve_btfids_clean: >> 1124 ifneq ($(wildcard $(resolve_btfids_O)),) >> 1125 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/resolve_btfids O=$(resolve_btfids_O) clean >> 1126 endif >> 1127 >> 1128 ifdef CONFIG_BPF >> 1129 ifdef CONFIG_DEBUG_INFO_BTF >> 1130 ifeq ($(has_libelf),1) >> 1131 resolve_btfids_target := tools/bpf/resolve_btfids FORCE >> 1132 else >> 1133 ERROR_RESOLVE_BTFIDS := 1 >> 1134 endif >> 1135 endif # CONFIG_DEBUG_INFO_BTF >> 1136 endif # CONFIG_BPF >> 1137 1099 PHONY += prepare0 1138 PHONY += prepare0 1100 1139 1101 export extmod_prefix = $(if $(KBUILD_EXTMOD), 1140 export extmod_prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/) 1102 export MODORDER := $(extmod_prefix)modules.or 1141 export MODORDER := $(extmod_prefix)modules.order 1103 export MODULES_NSDEPS := $(extmod_prefix)modu 1142 export MODULES_NSDEPS := $(extmod_prefix)modules.nsdeps 1104 1143 1105 ifeq ($(KBUILD_EXTMOD),) 1144 ifeq ($(KBUILD_EXTMOD),) >> 1145 core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ >> 1146 >> 1147 vmlinux-dirs := $(patsubst %/,%,$(filter %/, \ >> 1148 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ >> 1149 $(libs-y) $(libs-m))) 1106 1150 1107 build-dir := . !! 1151 vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \ 1108 clean-dirs := $(sort . Documentation \ << 1109 $(patsubst %/,%,$(filter 1152 $(patsubst %/,%,$(filter %/, $(core-) \ 1110 $(drivers-) $(libs-)) 1153 $(drivers-) $(libs-)))) 1111 1154 1112 export ARCH_CORE := $(core-y) !! 1155 subdir-modorder := $(addsuffix modules.order,$(filter %/, \ 1113 export ARCH_LIB := $(filter %/, $(lib !! 1156 $(core-y) $(core-m) $(libs-y) $(libs-m) \ 1114 export ARCH_DRIVERS := $(drivers-y) $(dri !! 1157 $(drivers-y) $(drivers-m))) 1115 # Externally visible symbols (used by link-vm !! 1158 >> 1159 build-dirs := $(vmlinux-dirs) >> 1160 clean-dirs := $(vmlinux-alldirs) 1116 1161 1117 KBUILD_VMLINUX_OBJS := ./built-in.a !! 1162 # Externally visible symbols (used by link-vmlinux.sh) >> 1163 KBUILD_VMLINUX_OBJS := $(head-y) $(patsubst %/,%/built-in.a, $(core-y)) >> 1164 KBUILD_VMLINUX_OBJS += $(addsuffix built-in.a, $(filter %/, $(libs-y))) 1118 ifdef CONFIG_MODULES 1165 ifdef CONFIG_MODULES 1119 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a 1166 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y))) 1120 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib 1167 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y)) 1121 else 1168 else 1122 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, 1169 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y)) 1123 endif 1170 endif >> 1171 KBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y)) 1124 1172 1125 export KBUILD_VMLINUX_LIBS !! 1173 export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS 1126 export KBUILD_LDS := arch/$(SRCARCH) 1174 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds >> 1175 # used by scripts/Makefile.package >> 1176 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools) >> 1177 >> 1178 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) 1127 1179 >> 1180 # Recurse until adjust_autoksyms.sh is satisfied >> 1181 PHONY += autoksyms_recursive 1128 ifdef CONFIG_TRIM_UNUSED_KSYMS 1182 ifdef CONFIG_TRIM_UNUSED_KSYMS 1129 # For the kernel to actually contain only the 1183 # For the kernel to actually contain only the needed exported symbols, 1130 # we have to build modules as well to determi 1184 # we have to build modules as well to determine what those symbols are. >> 1185 # (this can be evaluated only once include/config/auto.conf has been included) 1131 KBUILD_MODULES := 1 1186 KBUILD_MODULES := 1 >> 1187 >> 1188 autoksyms_recursive: descend modules.order >> 1189 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ >> 1190 "$(MAKE) -f $(srctree)/Makefile vmlinux" 1132 endif 1191 endif 1133 1192 1134 # '$(AR) mPi' needs 'T' to workaround the bug !! 1193 autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) 1135 quiet_cmd_ar_vmlinux.a = AR $@ << 1136 cmd_ar_vmlinux.a = \ << 1137 rm -f $@; \ << 1138 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS << 1139 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) << 1140 << 1141 targets += vmlinux.a << 1142 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea << 1143 $(call if_changed,ar_vmlinux.a) << 1144 << 1145 PHONY += vmlinux_o << 1146 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) << 1147 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1148 1194 1149 vmlinux.o modules.builtin.modinfo modules.bui !! 1195 quiet_cmd_autoksyms_h = GEN $@ 1150 @: !! 1196 cmd_autoksyms_h = mkdir -p $(dir $@); \ >> 1197 $(CONFIG_SHELL) $(srctree)/scripts/gen_autoksyms.sh $@ >> 1198 >> 1199 $(autoksyms_h): >> 1200 $(call cmd,autoksyms_h) >> 1201 >> 1202 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) >> 1203 >> 1204 # Final link of vmlinux with optional arch pass after final link >> 1205 cmd_link-vmlinux = \ >> 1206 $(CONFIG_SHELL) $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \ >> 1207 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1151 1208 1152 PHONY += vmlinux !! 1209 vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE 1153 # LDFLAGS_vmlinux in the top Makefile defines !! 1210 +$(call if_changed_dep,link-vmlinux) 1154 # not for decompressors. LDFLAGS_vmlinux in a !! 1211 1155 # unrelated; the decompressors just happen to !! 1212 targets := vmlinux 1156 # arch/*/boot/compressed/vmlinux. << 1157 # Export LDFLAGS_vmlinux only to scripts/Make << 1158 # << 1159 # _LDFLAGS_vmlinux is a workaround for the 'p << 1160 # https://savannah.gnu.org/bugs/?61463 << 1161 # For Make > 4.4, the following simple code w << 1162 # vmlinux: private export LDFLAGS_vmlinux := << 1163 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG << 1164 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ << 1165 vmlinux: vmlinux.o $(KBUILD_LDS) modpost << 1166 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1167 1213 1168 # The actual objects are generated when desce 1214 # The actual objects are generated when descending, 1169 # make sure no implicit rule kicks in 1215 # make sure no implicit rule kicks in 1170 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 1216 $(sort $(vmlinux-deps) $(subdir-modorder)): descend ; 1171 1217 1172 ifeq ($(origin KERNELRELEASE),file) !! 1218 filechk_kernel.release = \ 1173 filechk_kernel.release = $(srctree)/scripts/s !! 1219 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1174 else << 1175 filechk_kernel.release = echo $(KERNELRELEASE << 1176 endif << 1177 1220 1178 # Store (new) KERNELRELEASE string in include 1221 # Store (new) KERNELRELEASE string in include/config/kernel.release 1179 include/config/kernel.release: FORCE 1222 include/config/kernel.release: FORCE 1180 $(call filechk,kernel.release) 1223 $(call filechk,kernel.release) 1181 1224 1182 # Additional helpers built in scripts/ 1225 # Additional helpers built in scripts/ 1183 # Carefully list dependencies so we do not tr 1226 # Carefully list dependencies so we do not try to build scripts twice 1184 # in parallel 1227 # in parallel 1185 PHONY += scripts 1228 PHONY += scripts 1186 scripts: scripts_basic scripts_dtc 1229 scripts: scripts_basic scripts_dtc 1187 $(Q)$(MAKE) $(build)=$(@) 1230 $(Q)$(MAKE) $(build)=$(@) 1188 1231 1189 # Things we need to do before we recursively 1232 # Things we need to do before we recursively start building the kernel 1190 # or the modules are listed in "prepare". 1233 # or the modules are listed in "prepare". 1191 # A multi level approach is used. prepareN is 1234 # A multi level approach is used. prepareN is processed before prepareN-1. 1192 # archprepare is used in arch Makefiles and w 1235 # archprepare is used in arch Makefiles and when processed asm symlink, 1193 # version.h and scripts_basic is processed / 1236 # version.h and scripts_basic is processed / created. 1194 1237 1195 PHONY += prepare archprepare 1238 PHONY += prepare archprepare 1196 1239 1197 archprepare: outputmakefile archheaders archs 1240 archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \ 1198 asm-generic $(version_h) include/gene !! 1241 asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h \ 1199 include/generated/compile.h include/g !! 1242 include/generated/autoconf.h remove-stale-files 1200 1243 1201 prepare0: archprepare 1244 prepare0: archprepare 1202 $(Q)$(MAKE) $(build)=scripts/mod 1245 $(Q)$(MAKE) $(build)=scripts/mod 1203 $(Q)$(MAKE) $(build)=. prepare !! 1246 $(Q)$(MAKE) $(build)=. 1204 1247 1205 # All the preparing.. 1248 # All the preparing.. 1206 prepare: prepare0 !! 1249 prepare: prepare0 prepare-objtool prepare-resolve_btfids 1207 ifdef CONFIG_RUST << 1208 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1209 $(Q)$(MAKE) $(build)=rust << 1210 endif << 1211 1250 1212 PHONY += remove-stale-files 1251 PHONY += remove-stale-files 1213 remove-stale-files: 1252 remove-stale-files: 1214 $(Q)$(srctree)/scripts/remove-stale-f 1253 $(Q)$(srctree)/scripts/remove-stale-files 1215 1254 1216 # Support for using generic headers in asm-ge 1255 # Support for using generic headers in asm-generic 1217 asm-generic := -f $(srctree)/scripts/Makefile !! 1256 asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj 1218 1257 1219 PHONY += asm-generic uapi-asm-generic 1258 PHONY += asm-generic uapi-asm-generic 1220 asm-generic: uapi-asm-generic 1259 asm-generic: uapi-asm-generic 1221 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1260 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \ 1222 generic=include/asm-generic 1261 generic=include/asm-generic 1223 uapi-asm-generic: 1262 uapi-asm-generic: 1224 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1263 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \ 1225 generic=include/uapi/asm-generic 1264 generic=include/uapi/asm-generic 1226 1265 >> 1266 PHONY += prepare-objtool prepare-resolve_btfids >> 1267 prepare-objtool: $(objtool_target) >> 1268 ifeq ($(SKIP_STACK_VALIDATION),1) >> 1269 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL >> 1270 @echo "error: Cannot generate __mcount_loc for CONFIG_DYNAMIC_FTRACE=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1271 @false >> 1272 endif >> 1273 ifdef CONFIG_UNWINDER_ORC >> 1274 @echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1275 @false >> 1276 else >> 1277 @echo "warning: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1278 endif >> 1279 endif >> 1280 >> 1281 prepare-resolve_btfids: $(resolve_btfids_target) >> 1282 ifeq ($(ERROR_RESOLVE_BTFIDS),1) >> 1283 @echo "error: Cannot resolve BTF IDs for CONFIG_DEBUG_INFO_BTF, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1284 @false >> 1285 endif 1227 # Generate some files 1286 # Generate some files 1228 # ------------------------------------------- 1287 # --------------------------------------------------------------------------- 1229 1288 1230 # KERNELRELEASE can change from a few differe 1289 # KERNELRELEASE can change from a few different places, meaning version.h 1231 # needs to be updated, so this check is force 1290 # needs to be updated, so this check is forced on all builds 1232 1291 1233 uts_len := 64 1292 uts_len := 64 1234 define filechk_utsrelease.h 1293 define filechk_utsrelease.h 1235 if [ `echo -n "$(KERNELRELEASE)" | wc 1294 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1236 echo '"$(KERNELRELEASE)" exceeds $( 1295 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1237 exit 1; 1296 exit 1; \ 1238 fi; 1297 fi; \ 1239 echo \#define UTS_RELEASE \"$(KERNELR 1298 echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" 1240 endef 1299 endef 1241 1300 1242 define filechk_version.h 1301 define filechk_version.h 1243 if [ $(SUBLEVEL) -gt 255 ]; then 1302 if [ $(SUBLEVEL) -gt 255 ]; then \ 1244 echo \#define LINUX_VERSION_C 1303 echo \#define LINUX_VERSION_CODE $(shell \ 1245 expr $(VERSION) \* 65536 + $( 1304 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + 255); \ 1246 else 1305 else \ 1247 echo \#define LINUX_VERSION_C 1306 echo \#define LINUX_VERSION_CODE $(shell \ 1248 expr $(VERSION) \* 65536 + $( 1307 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 1249 fi; 1308 fi; \ 1250 echo '#define KERNEL_VERSION(a,b,c) ( 1309 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + \ 1251 ((c) > 255 ? 255 : (c)))'; 1310 ((c) > 255 ? 255 : (c)))'; \ 1252 echo \#define LINUX_VERSION_MAJOR $(V 1311 echo \#define LINUX_VERSION_MAJOR $(VERSION); \ 1253 echo \#define LINUX_VERSION_PATCHLEVE 1312 echo \#define LINUX_VERSION_PATCHLEVEL $(PATCHLEVEL); \ 1254 echo \#define LINUX_VERSION_SUBLEVEL 1313 echo \#define LINUX_VERSION_SUBLEVEL $(SUBLEVEL) 1255 endef 1314 endef 1256 1315 1257 $(version_h): private PATCHLEVEL := $(or $(PA !! 1316 $(version_h): PATCHLEVEL := $(if $(PATCHLEVEL), $(PATCHLEVEL), 0) 1258 $(version_h): private SUBLEVEL := $(or $(SUBL !! 1317 $(version_h): SUBLEVEL := $(if $(SUBLEVEL), $(SUBLEVEL), 0) 1259 $(version_h): FORCE 1318 $(version_h): FORCE 1260 $(call filechk,version.h) 1319 $(call filechk,version.h) 1261 1320 1262 include/generated/utsrelease.h: include/confi 1321 include/generated/utsrelease.h: include/config/kernel.release FORCE 1263 $(call filechk,utsrelease.h) 1322 $(call filechk,utsrelease.h) 1264 1323 1265 filechk_compile.h = $(srctree)/scripts/mkcomp << 1266 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION << 1267 << 1268 include/generated/compile.h: FORCE << 1269 $(call filechk,compile.h) << 1270 << 1271 PHONY += headerdep 1324 PHONY += headerdep 1272 headerdep: 1325 headerdep: 1273 $(Q)find $(srctree)/include/ -name '* 1326 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1274 $(srctree)/scripts/headerdep.pl -I$(s 1327 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1275 1328 1276 # ------------------------------------------- 1329 # --------------------------------------------------------------------------- 1277 # Kernel headers 1330 # Kernel headers 1278 1331 1279 #Default location for installed headers 1332 #Default location for installed headers 1280 export INSTALL_HDR_PATH = $(objtree)/usr 1333 export INSTALL_HDR_PATH = $(objtree)/usr 1281 1334 1282 quiet_cmd_headers_install = INSTALL $(INSTALL 1335 quiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include 1283 cmd_headers_install = \ 1336 cmd_headers_install = \ 1284 mkdir -p $(INSTALL_HDR_PATH); \ 1337 mkdir -p $(INSTALL_HDR_PATH); \ 1285 rsync -mrl --include='*/' --include=' 1338 rsync -mrl --include='*/' --include='*\.h' --exclude='*' \ 1286 usr/include $(INSTALL_HDR_PATH) 1339 usr/include $(INSTALL_HDR_PATH) 1287 1340 1288 PHONY += headers_install 1341 PHONY += headers_install 1289 headers_install: headers 1342 headers_install: headers 1290 $(call cmd,headers_install) 1343 $(call cmd,headers_install) 1291 1344 1292 PHONY += archheaders archscripts 1345 PHONY += archheaders archscripts 1293 1346 1294 hdr-inst := -f $(srctree)/scripts/Makefile.he 1347 hdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj 1295 1348 1296 PHONY += headers 1349 PHONY += headers 1297 headers: $(version_h) scripts_unifdef uapi-as 1350 headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts 1298 $(if $(filter um, $(SRCARCH)), $(erro !! 1351 $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ >> 1352 $(error Headers not exportable for the $(SRCARCH) architecture)) 1299 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1353 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1300 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC 1354 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi 1301 1355 >> 1356 # Deprecated. It is no-op now. >> 1357 PHONY += headers_check >> 1358 headers_check: >> 1359 @echo >&2 "=================== WARNING ===================" >> 1360 @echo >&2 "Since Linux 5.5, 'make headers_check' is no-op," >> 1361 @echo >&2 "and will be removed after Linux 5.15 release." >> 1362 @echo >&2 "Please remove headers_check from your scripts." >> 1363 @echo >&2 "===============================================" >> 1364 1302 ifdef CONFIG_HEADERS_INSTALL 1365 ifdef CONFIG_HEADERS_INSTALL 1303 prepare: headers 1366 prepare: headers 1304 endif 1367 endif 1305 1368 1306 PHONY += scripts_unifdef 1369 PHONY += scripts_unifdef 1307 scripts_unifdef: scripts_basic 1370 scripts_unifdef: scripts_basic 1308 $(Q)$(MAKE) $(build)=scripts scripts/ 1371 $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1309 1372 1310 # ------------------------------------------- 1373 # --------------------------------------------------------------------------- 1311 # Install 1374 # Install 1312 1375 1313 # Many distributions have the custom install 1376 # Many distributions have the custom install script, /sbin/installkernel. 1314 # If DKMS is installed, 'make install' will e !! 1377 # If DKMS is installed, 'make install' will eventually recuses back 1315 # to this Makefile to build and install exter !! 1378 # to the this Makefile to build and install external modules. 1316 # Cancel sub_make_done so that options such a 1379 # Cancel sub_make_done so that options such as M=, V=, etc. are parsed. 1317 1380 1318 quiet_cmd_install = INSTALL $(INSTALL_PATH) !! 1381 install: sub_make_done := 1319 cmd_install = unset sub_make_done; $(sr << 1320 << 1321 # ------------------------------------------- << 1322 # vDSO install << 1323 << 1324 PHONY += vdso_install << 1325 vdso_install: export INSTALL_FILES = $(vdso-i << 1326 vdso_install: << 1327 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1328 << 1329 # ------------------------------------------- << 1330 # Tools << 1331 << 1332 ifdef CONFIG_OBJTOOL << 1333 prepare: tools/objtool << 1334 endif << 1335 << 1336 ifdef CONFIG_BPF << 1337 ifdef CONFIG_DEBUG_INFO_BTF << 1338 prepare: tools/bpf/resolve_btfids << 1339 endif << 1340 endif << 1341 << 1342 # The tools build system is not a part of Kbu << 1343 # its own unique issues. If you need to integ << 1344 # please consider locating that tool outside << 1345 # standard Kbuild "hostprogs" syntax instead << 1346 # here. See Documentation/kbuild/makefiles.rs << 1347 << 1348 PHONY += resolve_btfids_clean << 1349 << 1350 resolve_btfids_O = $(abspath $(objtree))/tool << 1351 << 1352 # tools/bpf/resolve_btfids directory might no << 1353 # in output directory, skip its clean in that << 1354 resolve_btfids_clean: << 1355 ifneq ($(wildcard $(resolve_btfids_O)),) << 1356 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ << 1357 endif << 1358 << 1359 # Clear a bunch of variables before executing << 1360 ifeq ($(quiet),silent_) << 1361 tools_silent=s << 1362 endif << 1363 << 1364 tools/: FORCE << 1365 $(Q)mkdir -p $(objtree)/tools << 1366 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1367 << 1368 tools/%: FORCE << 1369 $(Q)mkdir -p $(objtree)/tools << 1370 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1371 1382 1372 # ------------------------------------------- << 1373 # Kernel selftest 1383 # Kernel selftest 1374 1384 1375 PHONY += kselftest 1385 PHONY += kselftest 1376 kselftest: headers !! 1386 kselftest: 1377 $(Q)$(MAKE) -C $(srctree)/tools/testi 1387 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 1378 1388 1379 kselftest-%: headers FORCE !! 1389 kselftest-%: FORCE 1380 $(Q)$(MAKE) -C $(srctree)/tools/testi 1390 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $* 1381 1391 1382 PHONY += kselftest-merge 1392 PHONY += kselftest-merge 1383 kselftest-merge: 1393 kselftest-merge: 1384 $(if $(wildcard $(objtree)/.config),, 1394 $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1385 $(Q)find $(srctree)/tools/testing/sel !! 1395 $(Q)find $(srctree)/tools/testing/selftests -name config | \ 1386 xargs $(srctree)/scripts/kcon !! 1396 xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config 1387 $(Q)$(MAKE) -f $(srctree)/Makefile ol 1397 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1388 1398 1389 # ------------------------------------------- 1399 # --------------------------------------------------------------------------- 1390 # Devicetree files 1400 # Devicetree files 1391 1401 1392 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ 1402 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 1393 dtstree := arch/$(SRCARCH)/boot/dts 1403 dtstree := arch/$(SRCARCH)/boot/dts 1394 endif 1404 endif 1395 1405 1396 ifneq ($(dtstree),) 1406 ifneq ($(dtstree),) 1397 1407 1398 %.dtb: dtbs_prepare !! 1408 %.dtb: include/config/kernel.release scripts_dtc 1399 $(Q)$(MAKE) $(build)=$(dtstree) $(dts 1409 $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1400 1410 1401 %.dtbo: dtbs_prepare !! 1411 %.dtbo: include/config/kernel.release scripts_dtc 1402 $(Q)$(MAKE) $(build)=$(dtstree) $(dts 1412 $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1403 1413 1404 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ !! 1414 PHONY += dtbs dtbs_install dtbs_check 1405 dtbs: dtbs_prepare !! 1415 dtbs: include/config/kernel.release scripts_dtc 1406 $(Q)$(MAKE) $(build)=$(dtstree) need- !! 1416 $(Q)$(MAKE) $(build)=$(dtstree) 1407 << 1408 # include/config/kernel.release is actually n << 1409 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) << 1410 # dtbs_install depend on it as dtbs_install m << 1411 dtbs_prepare: include/config/kernel.release s << 1412 1417 1413 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), 1418 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),) 1414 export CHECK_DTBS=y 1419 export CHECK_DTBS=y 1415 endif !! 1420 dtbs: dt_binding_check 1416 << 1417 ifneq ($(CHECK_DTBS),) << 1418 dtbs_prepare: dt_binding_schemas << 1419 endif 1421 endif 1420 1422 1421 dtbs_check: dtbs 1423 dtbs_check: dtbs 1422 1424 1423 dtbs_install: 1425 dtbs_install: 1424 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1426 $(Q)$(MAKE) $(dtbinst)=$(dtstree) dst=$(INSTALL_DTBS_PATH) 1425 1427 1426 ifdef CONFIG_OF_EARLY_FLATTREE 1428 ifdef CONFIG_OF_EARLY_FLATTREE 1427 all: dtbs 1429 all: dtbs 1428 endif 1430 endif 1429 1431 1430 endif 1432 endif 1431 1433 1432 PHONY += scripts_dtc 1434 PHONY += scripts_dtc 1433 scripts_dtc: scripts_basic 1435 scripts_dtc: scripts_basic 1434 $(Q)$(MAKE) $(build)=scripts/dtc 1436 $(Q)$(MAKE) $(build)=scripts/dtc 1435 1437 1436 ifneq ($(filter dt_binding_check, $(MAKECMDGO 1438 ifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),) 1437 export CHECK_DTBS=y !! 1439 export CHECK_DT_BINDING=y 1438 endif 1440 endif 1439 1441 1440 PHONY += dt_binding_check dt_binding_schemas !! 1442 PHONY += dt_binding_check 1441 dt_binding_check: dt_binding_schemas scripts_ !! 1443 dt_binding_check: scripts_dtc 1442 $(Q)$(MAKE) $(build)=Documentation/de << 1443 << 1444 dt_binding_schemas: << 1445 $(Q)$(MAKE) $(build)=Documentation/de 1444 $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings 1446 1445 1447 PHONY += dt_compatible_check << 1448 dt_compatible_check: dt_binding_schemas << 1449 $(Q)$(MAKE) $(build)=Documentation/de << 1450 << 1451 # ------------------------------------------- 1446 # --------------------------------------------------------------------------- 1452 # Modules 1447 # Modules 1453 1448 1454 ifdef CONFIG_MODULES 1449 ifdef CONFIG_MODULES 1455 1450 1456 # By default, build modules as well 1451 # By default, build modules as well 1457 1452 1458 all: modules 1453 all: modules 1459 1454 1460 # When we're building modules with modversion 1455 # When we're building modules with modversions, we need to consider 1461 # the built-in objects during the descend as 1456 # the built-in objects during the descend as well, in order to 1462 # make sure the checksums are up to date befo 1457 # make sure the checksums are up to date before we record them. 1463 ifdef CONFIG_MODVERSIONS 1458 ifdef CONFIG_MODVERSIONS 1464 KBUILD_BUILTIN := 1 1459 KBUILD_BUILTIN := 1 1465 endif 1460 endif 1466 1461 1467 # Build modules 1462 # Build modules 1468 # 1463 # >> 1464 # A module can be listed more than once in obj-m resulting in >> 1465 # duplicate lines in modules.order files. Those are removed >> 1466 # using awk while concatenating to the final file. 1469 1467 1470 # *.ko are usually independent of vmlinux, bu !! 1468 PHONY += modules 1471 # is an exception. !! 1469 modules: $(if $(KBUILD_BUILTIN),vmlinux) modules_check modules_prepare 1472 ifdef CONFIG_DEBUG_INFO_BTF_MODULES << 1473 KBUILD_BUILTIN := 1 << 1474 modules: vmlinux << 1475 endif << 1476 1470 1477 modules: modules_prepare !! 1471 cmd_modules_order = $(AWK) '!x[$$0]++' $(real-prereqs) > $@ >> 1472 >> 1473 modules.order: $(subdir-modorder) FORCE >> 1474 $(call if_changed,modules_order) >> 1475 >> 1476 targets += modules.order 1478 1477 1479 # Target to prepare building external modules 1478 # Target to prepare building external modules >> 1479 PHONY += modules_prepare 1480 modules_prepare: prepare 1480 modules_prepare: prepare 1481 $(Q)$(MAKE) $(build)=scripts scripts/ 1481 $(Q)$(MAKE) $(build)=scripts scripts/module.lds 1482 1482 >> 1483 export modules_sign_only := >> 1484 >> 1485 ifeq ($(CONFIG_MODULE_SIG),y) >> 1486 PHONY += modules_sign >> 1487 modules_sign: modules_install >> 1488 @: >> 1489 >> 1490 # modules_sign is a subset of modules_install. >> 1491 # 'make modules_install modules_sign' is equivalent to 'make modules_install'. >> 1492 ifeq ($(filter modules_install,$(MAKECMDGOALS)),) >> 1493 modules_sign_only := y >> 1494 endif >> 1495 endif >> 1496 >> 1497 modinst_pre := >> 1498 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) >> 1499 modinst_pre := __modinst_pre >> 1500 endif >> 1501 >> 1502 modules_install: $(modinst_pre) >> 1503 PHONY += __modinst_pre >> 1504 __modinst_pre: >> 1505 @rm -rf $(MODLIB)/kernel >> 1506 @rm -f $(MODLIB)/source >> 1507 @mkdir -p $(MODLIB)/kernel >> 1508 @ln -s $(abspath $(srctree)) $(MODLIB)/source >> 1509 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ >> 1510 rm -f $(MODLIB)/build ; \ >> 1511 ln -s $(CURDIR) $(MODLIB)/build ; \ >> 1512 fi >> 1513 @sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order >> 1514 @cp -f modules.builtin $(MODLIB)/ >> 1515 @cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/ >> 1516 1483 endif # CONFIG_MODULES 1517 endif # CONFIG_MODULES 1484 1518 1485 ### 1519 ### 1486 # Cleaning is done on three levels. 1520 # Cleaning is done on three levels. 1487 # make clean Delete most generated files 1521 # make clean Delete most generated files 1488 # Leave enough to build extern 1522 # Leave enough to build external modules 1489 # make mrproper Delete the current configura 1523 # make mrproper Delete the current configuration, and all generated files 1490 # make distclean Remove editor backup files, 1524 # make distclean Remove editor backup files, patch leftover files and the like 1491 1525 1492 # Directories & files removed with 'make clea 1526 # Directories & files removed with 'make clean' 1493 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1527 CLEAN_FILES += include/ksym vmlinux.symvers modules-only.symvers \ 1494 modules.builtin modules.builti 1528 modules.builtin modules.builtin.modinfo modules.nsdeps \ 1495 modules.builtin.ranges vmlinux !! 1529 compile_commands.json .thinlto-cache 1496 compile_commands.json rust/tes << 1497 rust-project.json .vmlinux.obj << 1498 1530 1499 # Directories & files removed with 'make mrpr 1531 # Directories & files removed with 'make mrproper' 1500 MRPROPER_FILES += include/config include/gene 1532 MRPROPER_FILES += include/config include/generated \ 1501 arch/$(SRCARCH)/include/gen !! 1533 arch/$(SRCARCH)/include/generated .tmp_objdiff \ 1502 debian snap tar-install PKG !! 1534 debian snap tar-install \ 1503 .config .config.old .versio 1535 .config .config.old .version \ 1504 Module.symvers \ 1536 Module.symvers \ 1505 certs/signing_key.pem \ !! 1537 certs/signing_key.pem certs/signing_key.x509 \ 1506 certs/x509.genkey \ 1538 certs/x509.genkey \ 1507 vmlinux-gdb.py \ 1539 vmlinux-gdb.py \ 1508 rpmbuild \ !! 1540 *.spec 1509 rust/libmacros.so << 1510 1541 1511 # clean - Delete most, but leave enough to bu 1542 # clean - Delete most, but leave enough to build external modules 1512 # 1543 # 1513 clean: private rm-files := $(CLEAN_FILES) !! 1544 clean: rm-files := $(CLEAN_FILES) 1514 1545 1515 PHONY += archclean vmlinuxclean 1546 PHONY += archclean vmlinuxclean 1516 1547 1517 vmlinuxclean: 1548 vmlinuxclean: 1518 $(Q)$(CONFIG_SHELL) $(srctree)/script 1549 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1519 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f 1550 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1520 1551 1521 clean: archclean vmlinuxclean resolve_btfids_ 1552 clean: archclean vmlinuxclean resolve_btfids_clean 1522 1553 1523 # mrproper - Delete all generated files, incl 1554 # mrproper - Delete all generated files, including .config 1524 # 1555 # 1525 mrproper: private rm-files := $(MRPROPER_FILE !! 1556 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1526 mrproper-dirs := $(addprefix _mrproper_, 1557 mrproper-dirs := $(addprefix _mrproper_,scripts) 1527 1558 1528 PHONY += $(mrproper-dirs) mrproper 1559 PHONY += $(mrproper-dirs) mrproper 1529 $(mrproper-dirs): 1560 $(mrproper-dirs): 1530 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1561 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1531 1562 1532 mrproper: clean $(mrproper-dirs) 1563 mrproper: clean $(mrproper-dirs) 1533 $(call cmd,rmfiles) 1564 $(call cmd,rmfiles) 1534 @find . $(RCS_FIND_IGNORE) \ << 1535 \( -name '*.rmeta' \) \ << 1536 -type f -print | xargs rm -f << 1537 1565 1538 # distclean 1566 # distclean 1539 # 1567 # 1540 PHONY += distclean 1568 PHONY += distclean 1541 1569 1542 distclean: mrproper 1570 distclean: mrproper 1543 @find . $(RCS_FIND_IGNORE) \ 1571 @find . $(RCS_FIND_IGNORE) \ 1544 \( -name '*.orig' -o -name '* 1572 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1545 -o -name '*.bak' -o -name '#* 1573 -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1546 -o -name 'core' -o -name tags 1574 -o -name 'core' -o -name tags -o -name TAGS -o -name 'cscope*' \ 1547 -o -name GPATH -o -name GRTAG 1575 -o -name GPATH -o -name GRTAGS -o -name GSYMS -o -name GTAGS \) \ 1548 -type f -print | xargs rm -f 1576 -type f -print | xargs rm -f 1549 1577 1550 1578 1551 # Packaging of the kernel to various formats 1579 # Packaging of the kernel to various formats 1552 # ------------------------------------------- 1580 # --------------------------------------------------------------------------- 1553 1581 1554 %src-pkg: FORCE 1582 %src-pkg: FORCE 1555 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1583 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1556 %pkg: include/config/kernel.release FORCE 1584 %pkg: include/config/kernel.release FORCE 1557 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1585 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1558 1586 1559 # Brief documentation of the typical targets 1587 # Brief documentation of the typical targets used 1560 # ------------------------------------------- 1588 # --------------------------------------------------------------------------- 1561 1589 1562 boards := $(wildcard $(srctree)/arch/$(SRCARC 1590 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1563 boards := $(sort $(notdir $(boards))) 1591 boards := $(sort $(notdir $(boards))) 1564 board-dirs := $(dir $(wildcard $(srctree)/arc 1592 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1565 board-dirs := $(sort $(notdir $(board-dirs:/= 1593 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1566 1594 1567 PHONY += help 1595 PHONY += help 1568 help: 1596 help: 1569 @echo 'Cleaning targets:' 1597 @echo 'Cleaning targets:' 1570 @echo ' clean - Remove mo 1598 @echo ' clean - Remove most generated files but keep the config and' 1571 @echo ' enough bu 1599 @echo ' enough build support to build external modules' 1572 @echo ' mrproper - Remove al 1600 @echo ' mrproper - Remove all generated files + config + various backup files' 1573 @echo ' distclean - mrproper 1601 @echo ' distclean - mrproper + remove editor backup and patch files' 1574 @echo '' 1602 @echo '' >> 1603 @echo 'Configuration targets:' 1575 @$(MAKE) -f $(srctree)/scripts/kconfi 1604 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1576 @echo '' 1605 @echo '' 1577 @echo 'Other generic targets:' 1606 @echo 'Other generic targets:' 1578 @echo ' all - Build all 1607 @echo ' all - Build all targets marked with [*]' 1579 @echo '* vmlinux - Build the 1608 @echo '* vmlinux - Build the bare kernel' 1580 @echo '* modules - Build all 1609 @echo '* modules - Build all modules' 1581 @echo ' modules_install - Install a 1610 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1582 @echo ' vdso_install - Install u << 1583 @echo ' dir/ - Build all 1611 @echo ' dir/ - Build all files in dir and below' 1584 @echo ' dir/file.[ois] - Build spe 1612 @echo ' dir/file.[ois] - Build specified target only' 1585 @echo ' dir/file.ll - Build the 1613 @echo ' dir/file.ll - Build the LLVM assembly file' 1586 @echo ' (requires 1614 @echo ' (requires compiler support for LLVM assembly generation)' 1587 @echo ' dir/file.lst - Build spe 1615 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1588 @echo ' (requires 1616 @echo ' (requires a recent binutils and recent build (System.map))' 1589 @echo ' dir/file.ko - Build mod 1617 @echo ' dir/file.ko - Build module including final link' 1590 @echo ' modules_prepare - Set up fo 1618 @echo ' modules_prepare - Set up for building external modules' 1591 @echo ' tags/TAGS - Generate 1619 @echo ' tags/TAGS - Generate tags file for editors' 1592 @echo ' cscope - Generate 1620 @echo ' cscope - Generate cscope index' 1593 @echo ' gtags - Generate 1621 @echo ' gtags - Generate GNU GLOBAL index' 1594 @echo ' kernelrelease - Output th 1622 @echo ' kernelrelease - Output the release version string (use with make -s)' 1595 @echo ' kernelversion - Output th 1623 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1596 @echo ' image_name - Output th 1624 @echo ' image_name - Output the image name (use with make -s)' 1597 @echo ' headers_install - Install s 1625 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1598 echo ' (default: 1626 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1599 echo '' 1627 echo '' 1600 @echo 'Static analysers:' 1628 @echo 'Static analysers:' 1601 @echo ' checkstack - Generate !! 1629 @echo ' checkstack - Generate a list of stack hogs' 1602 @echo ' with a st << 1603 @echo ' versioncheck - Sanity ch 1630 @echo ' versioncheck - Sanity check on version.h usage' 1604 @echo ' includecheck - Check for 1631 @echo ' includecheck - Check for duplicate included header files' 1605 @echo ' export_report - List the 1632 @echo ' export_report - List the usages of all exported symbols' 1606 @echo ' headerdep - Detect in 1633 @echo ' headerdep - Detect inclusion cycles in headers' 1607 @echo ' coccicheck - Check wit 1634 @echo ' coccicheck - Check with Coccinelle' 1608 @echo ' clang-analyzer - Check wit 1635 @echo ' clang-analyzer - Check with clang static analyzer' 1609 @echo ' clang-tidy - Check wit 1636 @echo ' clang-tidy - Check with clang-tidy' 1610 @echo '' 1637 @echo '' 1611 @echo 'Tools:' 1638 @echo 'Tools:' 1612 @echo ' nsdeps - Generate 1639 @echo ' nsdeps - Generate missing symbol namespace dependencies' 1613 @echo '' 1640 @echo '' 1614 @echo 'Kernel selftest:' 1641 @echo 'Kernel selftest:' 1615 @echo ' kselftest - Build a 1642 @echo ' kselftest - Build and run kernel selftest' 1616 @echo ' Build, 1643 @echo ' Build, install, and boot kernel before' 1617 @echo ' running 1644 @echo ' running kselftest on it' 1618 @echo ' Run as 1645 @echo ' Run as root for full coverage' 1619 @echo ' kselftest-all - Build k 1646 @echo ' kselftest-all - Build kernel selftest' 1620 @echo ' kselftest-install - Build a 1647 @echo ' kselftest-install - Build and install kernel selftest' 1621 @echo ' kselftest-clean - Remove 1648 @echo ' kselftest-clean - Remove all generated kselftest files' 1622 @echo ' kselftest-merge - Merge a 1649 @echo ' kselftest-merge - Merge all the config dependencies of' 1623 @echo ' kselfte 1650 @echo ' kselftest to existing .config.' 1624 @echo '' 1651 @echo '' 1625 @echo 'Rust targets:' << 1626 @echo ' rustavailable - Checks wh << 1627 @echo ' available << 1628 @echo ' rustfmt - Reformat << 1629 @echo ' rustfmtcheck - Checks if << 1630 @echo ' is format << 1631 @echo ' rustdoc - Generate << 1632 @echo ' (requires << 1633 @echo ' rusttest - Runs the << 1634 @echo ' (requires << 1635 @echo ' rust-analyzer - Generate << 1636 @echo ' (requires << 1637 @echo ' dir/file.[os] - Build spe << 1638 @echo ' dir/file.rsi - Build mac << 1639 @echo ' Run with << 1640 @echo ' The outpu << 1641 @echo ' dir/file.ll - Build the << 1642 @echo '' << 1643 @$(if $(dtstree), \ 1652 @$(if $(dtstree), \ 1644 echo 'Devicetree:'; \ 1653 echo 'Devicetree:'; \ 1645 echo '* dtbs - !! 1654 echo '* dtbs - Build device tree blobs for enabled boards'; \ 1646 echo ' dtbs_install - !! 1655 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ 1647 echo ' dt_binding_check - !! 1656 echo ' dt_binding_check - Validate device tree binding documents'; \ 1648 echo ' dt_binding_schemas - !! 1657 echo ' dtbs_check - Validate device tree source files';\ 1649 echo ' dtbs_check - << 1650 echo '') 1658 echo '') 1651 1659 1652 @echo 'Userspace tools targets:' 1660 @echo 'Userspace tools targets:' 1653 @echo ' use "make tools/help"' 1661 @echo ' use "make tools/help"' 1654 @echo ' or "cd tools; make help"' 1662 @echo ' or "cd tools; make help"' 1655 @echo '' 1663 @echo '' 1656 @echo 'Kernel packaging:' 1664 @echo 'Kernel packaging:' 1657 @$(MAKE) -f $(srctree)/scripts/Makefi 1665 @$(MAKE) -f $(srctree)/scripts/Makefile.package help 1658 @echo '' 1666 @echo '' 1659 @echo 'Documentation targets:' 1667 @echo 'Documentation targets:' 1660 @$(MAKE) -f $(srctree)/Documentation/ 1668 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1661 @echo '' 1669 @echo '' 1662 @echo 'Architecture-specific targets !! 1670 @echo 'Architecture specific targets ($(SRCARCH)):' 1663 @$(or $(archhelp),\ !! 1671 @$(if $(archhelp),$(archhelp),\ 1664 echo ' No architecture-speci !! 1672 echo ' No architecture specific help defined for $(SRCARCH)') 1665 @echo '' 1673 @echo '' 1666 @$(if $(boards), \ 1674 @$(if $(boards), \ 1667 $(foreach b, $(boards), \ 1675 $(foreach b, $(boards), \ 1668 printf " %-27s - Build for % 1676 printf " %-27s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1669 echo '') 1677 echo '') 1670 @$(if $(board-dirs), \ 1678 @$(if $(board-dirs), \ 1671 $(foreach b, $(board-dirs), \ 1679 $(foreach b, $(board-dirs), \ 1672 printf " %-16s - Show %s-spe 1680 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1673 printf " %-16s - Show all of 1681 printf " %-16s - Show all of the above\\n" help-boards; \ 1674 echo '') 1682 echo '') 1675 1683 1676 @echo ' make V=n [targets] 1: ver !! 1684 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1677 @echo ' 2: giv !! 1685 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1678 @echo ' V=1 an << 1679 @echo ' make O=dir [targets] Locate 1686 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1680 @echo ' make C=1 [targets] Check 1687 @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK' 1681 @echo ' (spars 1688 @echo ' (sparse by default)' 1682 @echo ' make C=2 [targets] Force 1689 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1683 @echo ' make RECORDMCOUNT_WARN=1 [t 1690 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1684 @echo ' make W=n [targets] Enable !! 1691 @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where' 1685 @echo ' 1: warnings w 1692 @echo ' 1: warnings which may be relevant and do not occur too often' 1686 @echo ' 2: warnings w 1693 @echo ' 2: warnings which occur quite often but may still be relevant' 1687 @echo ' 3: more obscu 1694 @echo ' 3: more obscure warnings, can most likely be ignored' 1688 @echo ' c: extra chec << 1689 @echo ' e: warnings a << 1690 @echo ' Multiple leve 1695 @echo ' Multiple levels can be combined with W=12 or W=123' 1691 @$(if $(dtstree), \ << 1692 echo ' make CHECK_DTBS=1 [ta << 1693 echo ' This can be ap << 1694 ) << 1695 @echo '' 1696 @echo '' 1696 @echo 'Execute "make" or "make all" 1697 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1697 @echo 'For further info see the ./RE 1698 @echo 'For further info see the ./README file' 1698 1699 1699 1700 1700 help-board-dirs := $(addprefix help-,$(board- 1701 help-board-dirs := $(addprefix help-,$(board-dirs)) 1701 1702 1702 help-boards: $(help-board-dirs) 1703 help-boards: $(help-board-dirs) 1703 1704 1704 boards-per-dir = $(sort $(notdir $(wildcard $ 1705 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1705 1706 1706 $(help-board-dirs): help-%: 1707 $(help-board-dirs): help-%: 1707 @echo 'Architecture-specific targets !! 1708 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1708 @$(if $(boards-per-dir), \ 1709 @$(if $(boards-per-dir), \ 1709 $(foreach b, $(boards-per-dir 1710 $(foreach b, $(boards-per-dir), \ 1710 printf " %-24s - Build for % 1711 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1711 echo '') 1712 echo '') 1712 1713 1713 1714 1714 # Documentation targets 1715 # Documentation targets 1715 # ------------------------------------------- 1716 # --------------------------------------------------------------------------- 1716 DOC_TARGETS := xmldocs latexdocs pdfdocs html 1717 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1717 linkcheckdocs dochelp refcheck !! 1718 linkcheckdocs dochelp refcheckdocs 1718 PHONY += $(DOC_TARGETS) 1719 PHONY += $(DOC_TARGETS) 1719 $(DOC_TARGETS): 1720 $(DOC_TARGETS): 1720 $(Q)$(MAKE) $(build)=Documentation $@ 1721 $(Q)$(MAKE) $(build)=Documentation $@ 1721 1722 1722 << 1723 # Rust targets << 1724 # ------------------------------------------- << 1725 << 1726 # "Is Rust available?" target << 1727 PHONY += rustavailable << 1728 rustavailable: << 1729 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1730 << 1731 # Documentation target << 1732 # << 1733 # Using the singular to avoid running afoul o << 1734 PHONY += rustdoc << 1735 rustdoc: prepare << 1736 $(Q)$(MAKE) $(build)=rust $@ << 1737 << 1738 # Testing target << 1739 PHONY += rusttest << 1740 rusttest: prepare << 1741 $(Q)$(MAKE) $(build)=rust $@ << 1742 << 1743 # Formatting targets << 1744 PHONY += rustfmt rustfmtcheck << 1745 << 1746 # We skip `rust/alloc` since we want to minim << 1747 # << 1748 # We match using absolute paths since `find` << 1749 # when matching, which is a problem when e.g. << 1750 # We `grep` afterwards in order to remove the << 1751 rustfmt: << 1752 $(Q)find $(abs_srctree) -type f -name << 1753 -o -path $(abs_srctree)/rust/ << 1754 -o -path $(abs_objtree)/rust/ << 1755 | grep -Fv $(abs_srctree)/rus << 1756 | grep -Fv $(abs_objtree)/rus << 1757 | grep -Fv generated \ << 1758 | xargs $(RUSTFMT) $(rustfmt_ << 1759 << 1760 rustfmtcheck: rustfmt_flags = --check << 1761 rustfmtcheck: rustfmt << 1762 << 1763 # Misc 1723 # Misc 1764 # ------------------------------------------- 1724 # --------------------------------------------------------------------------- 1765 1725 1766 PHONY += misc-check << 1767 misc-check: << 1768 $(Q)$(srctree)/scripts/misc-check << 1769 << 1770 all: misc-check << 1771 << 1772 PHONY += scripts_gdb 1726 PHONY += scripts_gdb 1773 scripts_gdb: prepare0 1727 scripts_gdb: prepare0 1774 $(Q)$(MAKE) $(build)=scripts/gdb 1728 $(Q)$(MAKE) $(build)=scripts/gdb 1775 $(Q)ln -fsn $(abspath $(srctree)/scri 1729 $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) 1776 1730 1777 ifdef CONFIG_GDB_SCRIPTS 1731 ifdef CONFIG_GDB_SCRIPTS 1778 all: scripts_gdb 1732 all: scripts_gdb 1779 endif 1733 endif 1780 1734 1781 else # KBUILD_EXTMOD 1735 else # KBUILD_EXTMOD 1782 1736 1783 filechk_kernel.release = echo $(KERNELRELEASE << 1784 << 1785 ### 1737 ### 1786 # External module support. 1738 # External module support. 1787 # When building external modules the kernel u 1739 # When building external modules the kernel used as basis is considered 1788 # read-only, and no consistency checks are ma 1740 # read-only, and no consistency checks are made and the make 1789 # system is not used on the basis kernel. If 1741 # system is not used on the basis kernel. If updates are required 1790 # in the basis kernel ordinary make commands 1742 # in the basis kernel ordinary make commands (without M=...) must be used. 1791 1743 1792 # We are always building only modules. 1744 # We are always building only modules. 1793 KBUILD_BUILTIN := 1745 KBUILD_BUILTIN := 1794 KBUILD_MODULES := 1 1746 KBUILD_MODULES := 1 1795 1747 1796 build-dir := $(KBUILD_EXTMOD) !! 1748 build-dirs := $(KBUILD_EXTMOD) >> 1749 $(MODORDER): descend >> 1750 @: 1797 1751 1798 compile_commands.json: $(extmod_prefix)compil 1752 compile_commands.json: $(extmod_prefix)compile_commands.json 1799 PHONY += compile_commands.json 1753 PHONY += compile_commands.json 1800 1754 1801 clean-dirs := $(KBUILD_EXTMOD) 1755 clean-dirs := $(KBUILD_EXTMOD) 1802 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1756 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps \ 1803 $(KBUILD_EXTMOD)/compile_commands.jso !! 1757 $(KBUILD_EXTMOD)/compile_commands.json $(KBUILD_EXTMOD)/.thinlto-cache 1804 << 1805 PHONY += prepare << 1806 # now expand this into a simple variable to r << 1807 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT << 1808 prepare: << 1809 @if [ "$(CC_VERSION_TEXT)" != "$(CONF << 1810 echo >&2 "warning: the compil << 1811 echo >&2 " The kernel was bu << 1812 echo >&2 " You are using: << 1813 fi << 1814 1758 1815 PHONY += help 1759 PHONY += help 1816 help: 1760 help: 1817 @echo ' Building external modules.' 1761 @echo ' Building external modules.' 1818 @echo ' Syntax: make -C path/to/ker 1762 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1819 @echo '' 1763 @echo '' 1820 @echo ' modules - default t 1764 @echo ' modules - default target, build the module(s)' 1821 @echo ' modules_install - install t 1765 @echo ' modules_install - install the module' 1822 @echo ' clean - remove ge 1766 @echo ' clean - remove generated files in module directory only' 1823 @echo ' rust-analyzer - generate << 1824 @echo '' 1767 @echo '' 1825 1768 1826 ifndef CONFIG_MODULES !! 1769 # no-op for external module builds 1827 modules modules_install: __external_modules_e !! 1770 PHONY += prepare modules_prepare 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 1771 1836 endif # KBUILD_EXTMOD 1772 endif # KBUILD_EXTMOD 1837 1773 1838 # ------------------------------------------- 1774 # --------------------------------------------------------------------------- 1839 # Modules 1775 # Modules 1840 1776 1841 PHONY += modules modules_install modules_sign !! 1777 PHONY += modules modules_install 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 1778 1860 ifdef CONFIG_MODULES 1779 ifdef CONFIG_MODULES 1861 1780 1862 $(MODORDER): $(build-dir) !! 1781 modules: modules_check 1863 @: !! 1782 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1864 << 1865 # KBUILD_MODPOST_NOFINAL can be set to skip t << 1866 # This is solely useful to speed up test comp << 1867 modules: modpost << 1868 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1869 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1870 endif << 1871 1783 1872 PHONY += modules_check 1784 PHONY += modules_check 1873 modules_check: $(MODORDER) 1785 modules_check: $(MODORDER) 1874 $(Q)$(CONFIG_SHELL) $(srctree)/script 1786 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $< 1875 1787 >> 1788 quiet_cmd_depmod = DEPMOD $(MODLIB) >> 1789 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ >> 1790 $(KERNELRELEASE) >> 1791 >> 1792 modules_install: >> 1793 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1794 $(call cmd,depmod) >> 1795 1876 else # CONFIG_MODULES 1796 else # CONFIG_MODULES 1877 1797 1878 modules: !! 1798 # Modules not configured 1879 @: !! 1799 # --------------------------------------------------------------------------- 1880 1800 1881 KBUILD_MODULES := !! 1801 modules modules_install: >> 1802 @echo >&2 '***' >> 1803 @echo >&2 '*** The present kernel configuration has modules disabled.' >> 1804 @echo >&2 '*** To use the module feature, please run "make menuconfig" etc.' >> 1805 @echo >&2 '*** to enable CONFIG_MODULES.' >> 1806 @echo >&2 '***' >> 1807 @exit 1 1882 1808 1883 endif # CONFIG_MODULES 1809 endif # CONFIG_MODULES 1884 1810 1885 PHONY += modpost << 1886 modpost: $(if $(single-build),, $(if $(KBUILD << 1887 $(if $(KBUILD_MODULES), modules_chec << 1888 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1889 << 1890 # Single targets 1811 # Single targets 1891 # ------------------------------------------- 1812 # --------------------------------------------------------------------------- 1892 # To build individual files in subdirectories 1813 # To build individual files in subdirectories, you can do like this: 1893 # 1814 # 1894 # make foo/bar/baz.s 1815 # make foo/bar/baz.s 1895 # 1816 # 1896 # The supported suffixes for single-target ar 1817 # The supported suffixes for single-target are listed in 'single-targets' 1897 # 1818 # 1898 # To build only under specific subdirectories 1819 # To build only under specific subdirectories, you can do like this: 1899 # 1820 # 1900 # make foo/bar/baz/ 1821 # make foo/bar/baz/ 1901 1822 1902 ifdef single-build 1823 ifdef single-build 1903 1824 1904 # .ko is special because modpost is needed 1825 # .ko is special because modpost is needed 1905 single-ko := $(sort $(filter %.ko, $(MAKECMDG 1826 single-ko := $(sort $(filter %.ko, $(MAKECMDGOALS))) 1906 single-no-ko := $(filter-out $(single-ko), $( !! 1827 single-no-ko := $(sort $(patsubst %.ko,%.mod, $(MAKECMDGOALS))) 1907 $(foreach x, o mod, $(patsubs << 1908 1828 1909 $(single-ko): single_modules !! 1829 $(single-ko): single_modpost 1910 @: 1830 @: 1911 $(single-no-ko): $(build-dir) !! 1831 $(single-no-ko): descend 1912 @: 1832 @: 1913 1833 1914 # Remove MODORDER when done because it is not !! 1834 ifeq ($(KBUILD_EXTMOD),) 1915 PHONY += single_modules !! 1835 # For the single build of in-tree modules, use a temporary file to avoid 1916 single_modules: $(single-no-ko) modules_prepa !! 1836 # the situation of modules_install installing an invalid modules.order. 1917 $(Q){ $(foreach m, $(single-ko), echo !! 1837 MODORDER := .modules.tmp 1918 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1919 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1920 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1921 endif 1838 endif 1922 $(Q)rm -f $(MODORDER) << 1923 1839 1924 single-goals := $(addprefix $(build-dir)/, $( !! 1840 PHONY += single_modpost >> 1841 single_modpost: $(single-no-ko) modules_prepare >> 1842 $(Q){ $(foreach m, $(single-ko), echo $(extmod_prefix)$m;) } > $(MODORDER) >> 1843 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1925 1844 1926 KBUILD_MODULES := 1 1845 KBUILD_MODULES := 1 1927 1846 >> 1847 export KBUILD_SINGLE_TARGETS := $(addprefix $(extmod_prefix), $(single-no-ko)) >> 1848 >> 1849 # trim unrelated directories >> 1850 build-dirs := $(foreach d, $(build-dirs), \ >> 1851 $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d))) >> 1852 >> 1853 endif >> 1854 >> 1855 ifndef CONFIG_MODULES >> 1856 KBUILD_MODULES := 1928 endif 1857 endif 1929 1858 >> 1859 # Handle descending into subdirectories listed in $(build-dirs) 1930 # Preset locale variables to speed up the bui 1860 # Preset locale variables to speed up the build process. Limit locale 1931 # tweaks to this spot to avoid wrong language 1861 # tweaks to this spot to avoid wrong language settings when running 1932 # make menuconfig etc. 1862 # make menuconfig etc. 1933 # Error messages still appears in the origina 1863 # Error messages still appears in the original language 1934 PHONY += $(build-dir) !! 1864 PHONY += descend $(build-dirs) 1935 $(build-dir): prepare !! 1865 descend: $(build-dirs) 1936 $(Q)$(MAKE) $(build)=$@ need-builtin= !! 1866 $(build-dirs): prepare >> 1867 $(Q)$(MAKE) $(build)=$@ \ >> 1868 single-build=$(if $(filter-out $@/, $(filter $@/%, $(KBUILD_SINGLE_TARGETS))),1) \ >> 1869 need-builtin=1 need-modorder=1 1937 1870 1938 clean-dirs := $(addprefix _clean_, $(clean-di 1871 clean-dirs := $(addprefix _clean_, $(clean-dirs)) 1939 PHONY += $(clean-dirs) clean 1872 PHONY += $(clean-dirs) clean 1940 $(clean-dirs): 1873 $(clean-dirs): 1941 $(Q)$(MAKE) $(clean)=$(patsubst _clea 1874 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1942 1875 1943 clean: $(clean-dirs) 1876 clean: $(clean-dirs) 1944 $(call cmd,rmfiles) 1877 $(call cmd,rmfiles) 1945 @find $(or $(KBUILD_EXTMOD), .) $(RCS !! 1878 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1946 \( -name '*.[aios]' -o -name !! 1879 \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ 1947 -o -name '*.ko.*' \ 1880 -o -name '*.ko.*' \ 1948 -o -name '*.dtb' -o -name '*. !! 1881 -o -name '*.dtb' -o -name '*.dtbo' -o -name '*.dtb.S' -o -name '*.dt.yaml' \ 1949 -o -name '*.dtb.S' -o -name ' << 1950 -o -name '*.dt.yaml' -o -name << 1951 -o -name '*.dwo' -o -name '*. 1882 -o -name '*.dwo' -o -name '*.lst' \ 1952 -o -name '*.su' -o -name '*.m 1883 -o -name '*.su' -o -name '*.mod' \ 1953 -o -name '.*.d' -o -name '.*. 1884 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1954 -o -name '*.lex.c' -o -name ' 1885 -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 1955 -o -name '*.asn1.[ch]' \ 1886 -o -name '*.asn1.[ch]' \ 1956 -o -name '*.symtypes' -o -nam 1887 -o -name '*.symtypes' -o -name 'modules.order' \ >> 1888 -o -name '.tmp_*.o.*' \ 1957 -o -name '*.c.[012]*.*' \ 1889 -o -name '*.c.[012]*.*' \ 1958 -o -name '*.ll' \ 1890 -o -name '*.ll' \ 1959 -o -name '*.gcno' \ 1891 -o -name '*.gcno' \ 1960 \) -type f -print \ !! 1892 -o -name '*.*.symversions' \) -type f -print | xargs rm -f 1961 -o -name '.tmp_*' -print \ << 1962 | xargs rm -rf << 1963 1893 1964 # Generate tags for editors 1894 # Generate tags for editors 1965 # ------------------------------------------- 1895 # --------------------------------------------------------------------------- 1966 quiet_cmd_tags = GEN $@ 1896 quiet_cmd_tags = GEN $@ 1967 cmd_tags = $(BASH) $(srctree)/scripts/t 1897 cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@ 1968 1898 1969 tags TAGS cscope gtags: FORCE 1899 tags TAGS cscope gtags: FORCE 1970 $(call cmd,tags) 1900 $(call cmd,tags) 1971 1901 1972 # Generate rust-project.json (a file that des << 1973 # Rust projects) for rust-analyzer (an implem << 1974 # Protocol). << 1975 PHONY += rust-analyzer << 1976 rust-analyzer: << 1977 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1978 $(Q)$(MAKE) $(build)=rust $@ << 1979 << 1980 # Script to generate missing namespace depend 1902 # Script to generate missing namespace dependencies 1981 # ------------------------------------------- 1903 # --------------------------------------------------------------------------- 1982 1904 1983 PHONY += nsdeps 1905 PHONY += nsdeps 1984 nsdeps: export KBUILD_NSDEPS=1 1906 nsdeps: export KBUILD_NSDEPS=1 1985 nsdeps: modules 1907 nsdeps: modules 1986 $(Q)$(CONFIG_SHELL) $(srctree)/script 1908 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/nsdeps 1987 1909 1988 # Clang Tooling 1910 # Clang Tooling 1989 # ------------------------------------------- 1911 # --------------------------------------------------------------------------- 1990 1912 1991 quiet_cmd_gen_compile_commands = GEN $@ 1913 quiet_cmd_gen_compile_commands = GEN $@ 1992 cmd_gen_compile_commands = $(PYTHON3) $ 1914 cmd_gen_compile_commands = $(PYTHON3) $< -a $(AR) -o $@ $(filter-out $<, $(real-prereqs)) 1993 1915 1994 $(extmod_prefix)compile_commands.json: $(srct !! 1916 $(extmod_prefix)compile_commands.json: scripts/clang-tools/gen_compile_commands.py \ 1995 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K !! 1917 $(if $(KBUILD_EXTMOD),,$(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)) \ 1996 $(if $(CONFIG_MODULES), $(MODORDER)) 1918 $(if $(CONFIG_MODULES), $(MODORDER)) FORCE 1997 $(call if_changed,gen_compile_command 1919 $(call if_changed,gen_compile_commands) 1998 1920 1999 targets += $(extmod_prefix)compile_commands.j 1921 targets += $(extmod_prefix)compile_commands.json 2000 1922 2001 PHONY += clang-tidy clang-analyzer 1923 PHONY += clang-tidy clang-analyzer 2002 1924 2003 ifdef CONFIG_CC_IS_CLANG 1925 ifdef CONFIG_CC_IS_CLANG 2004 quiet_cmd_clang_tools = CHECK $< 1926 quiet_cmd_clang_tools = CHECK $< 2005 cmd_clang_tools = $(PYTHON3) $(srctree) 1927 cmd_clang_tools = $(PYTHON3) $(srctree)/scripts/clang-tools/run-clang-tools.py $@ $< 2006 1928 2007 clang-tidy clang-analyzer: $(extmod_prefix)co 1929 clang-tidy clang-analyzer: $(extmod_prefix)compile_commands.json 2008 $(call cmd,clang_tools) 1930 $(call cmd,clang_tools) 2009 else 1931 else 2010 clang-tidy clang-analyzer: 1932 clang-tidy clang-analyzer: 2011 @echo "$@ requires CC=clang" >&2 1933 @echo "$@ requires CC=clang" >&2 2012 @false 1934 @false 2013 endif 1935 endif 2014 1936 2015 # Scripts to check various things for consist 1937 # Scripts to check various things for consistency 2016 # ------------------------------------------- 1938 # --------------------------------------------------------------------------- 2017 1939 2018 PHONY += includecheck versioncheck coccicheck 1940 PHONY += includecheck versioncheck coccicheck export_report 2019 1941 2020 includecheck: 1942 includecheck: 2021 find $(srctree)/* $(RCS_FIND_IGNORE) 1943 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2022 -name '*.[hcS]' -type f -prin 1944 -name '*.[hcS]' -type f -print | sort \ 2023 | xargs $(PERL) -w $(srctree) 1945 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 2024 1946 2025 versioncheck: 1947 versioncheck: 2026 find $(srctree)/* $(RCS_FIND_IGNORE) 1948 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2027 -name '*.[hcS]' -type f -prin 1949 -name '*.[hcS]' -type f -print | sort \ 2028 | xargs $(PERL) -w $(srctree) 1950 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 2029 1951 2030 coccicheck: 1952 coccicheck: 2031 $(Q)$(BASH) $(srctree)/scripts/$@ 1953 $(Q)$(BASH) $(srctree)/scripts/$@ 2032 1954 2033 export_report: 1955 export_report: 2034 $(PERL) $(srctree)/scripts/export_rep 1956 $(PERL) $(srctree)/scripts/export_report.pl 2035 1957 2036 PHONY += checkstack kernelrelease kernelversi 1958 PHONY += checkstack kernelrelease kernelversion image_name 2037 1959 2038 # UML needs a little special treatment here. 1960 # UML needs a little special treatment here. It wants to use the host 2039 # toolchain, so needs $(SUBARCH) passed to ch 1961 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 2040 # else wants $(ARCH), including people doing 1962 # else wants $(ARCH), including people doing cross-builds, which means 2041 # that $(SUBARCH) doesn't work here. 1963 # that $(SUBARCH) doesn't work here. 2042 ifeq ($(ARCH), um) 1964 ifeq ($(ARCH), um) 2043 CHECKSTACK_ARCH := $(SUBARCH) 1965 CHECKSTACK_ARCH := $(SUBARCH) 2044 else 1966 else 2045 CHECKSTACK_ARCH := $(ARCH) 1967 CHECKSTACK_ARCH := $(ARCH) 2046 endif 1968 endif 2047 MINSTACKSIZE ?= 100 << 2048 checkstack: 1969 checkstack: 2049 $(OBJDUMP) -d vmlinux $$(find . -name 1970 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 2050 $(PERL) $(srctree)/scripts/checkstack !! 1971 $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 2051 1972 2052 kernelrelease: 1973 kernelrelease: 2053 @$(filechk_kernel.release) !! 1974 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 2054 1975 2055 kernelversion: 1976 kernelversion: 2056 @echo $(KERNELVERSION) 1977 @echo $(KERNELVERSION) 2057 1978 2058 image_name: 1979 image_name: 2059 @echo $(KBUILD_IMAGE) 1980 @echo $(KBUILD_IMAGE) 2060 1981 2061 PHONY += run-command !! 1982 # Clear a bunch of variables before executing the submake 2062 run-command: !! 1983 2063 $(Q)$(KBUILD_RUN_COMMAND) !! 1984 ifeq ($(quiet),silent_) >> 1985 tools_silent=s >> 1986 endif >> 1987 >> 1988 tools/: FORCE >> 1989 $(Q)mkdir -p $(objtree)/tools >> 1990 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ >> 1991 >> 1992 tools/%: FORCE >> 1993 $(Q)mkdir -p $(objtree)/tools >> 1994 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ $* 2064 1995 2065 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 1996 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2066 cmd_rmfiles = rm -rf $(rm-files) 1997 cmd_rmfiles = rm -rf $(rm-files) 2067 1998 2068 # read saved command lines for existing targe 1999 # read saved command lines for existing targets 2069 existing-targets := $(wildcard $(sort $(targe 2000 existing-targets := $(wildcard $(sort $(targets))) 2070 2001 2071 -include $(foreach f,$(existing-targets),$(di 2002 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 2072 2003 2073 endif # config-build 2004 endif # config-build 2074 endif # mixed-build 2005 endif # mixed-build 2075 endif # need-sub-make 2006 endif # need-sub-make 2076 2007 2077 PHONY += FORCE 2008 PHONY += FORCE 2078 FORCE: 2009 FORCE: 2079 2010 2080 # Declare the contents of the PHONY variable 2011 # Declare the contents of the PHONY variable as phony. We keep that 2081 # information in a variable so we can use it 2012 # information in a variable so we can use it in if_changed and friends. 2082 .PHONY: $(PHONY) 2013 .PHONY: $(PHONY)
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