1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0 2 VERSION = 6 !! 2 VERSION = 5 3 PATCHLEVEL = 11 !! 3 PATCHLEVEL = 8 4 SUBLEVEL = 5 !! 4 SUBLEVEL = 18 5 EXTRAVERSION = 5 EXTRAVERSION = 6 NAME = Baby Opossum Posse !! 6 NAME = Kleptomaniac Octopus 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 << 97 quiet=silent_ << 98 override KBUILD_VERBOSE := << 99 endif << 100 << 101 export quiet Q KBUILD_VERBOSE << 102 << 103 # Call a source code checker (by default, "spa << 104 # C compilation. << 105 # << 106 # Use 'make C=1' to enable checking of only re << 107 # Use 'make C=2' to enable checking of *all* s << 108 # of whether they are re-compiled or not. << 109 # << 110 # See the file "Documentation/dev-tools/sparse << 111 # including where to get the "sparse" utility. << 112 << 113 ifeq ("$(origin C)", "command line") << 114 KBUILD_CHECKSRC = $(C) << 115 endif << 116 ifndef KBUILD_CHECKSRC << 117 KBUILD_CHECKSRC = 0 << 118 endif << 119 << 120 export KBUILD_CHECKSRC << 121 << 122 # Enable "clippy" (a linter) as part of the Ru << 123 # << 124 # Use 'make CLIPPY=1' to enable it. << 125 ifeq ("$(origin CLIPPY)", "command line") << 126 KBUILD_CLIPPY := $(CLIPPY) << 127 endif << 128 << 129 export KBUILD_CLIPPY << 130 << 131 # Use make M=dir or set the environment variab << 132 # directory of external module to build. Setti << 133 ifeq ("$(origin M)", "command line") << 134 KBUILD_EXTMOD := $(M) << 135 endif << 136 << 137 $(if $(word 2, $(KBUILD_EXTMOD)), \ << 138 $(error building multiple external mod << 139 << 140 $(foreach x, % :, $(if $(findstring $x, $(KBUI << 141 $(error module directory path cannot c << 142 << 143 # Remove trailing slashes << 144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) << 145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM << 146 endif << 147 << 148 export KBUILD_EXTMOD << 149 << 150 # backward compatibility << 151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC << 152 96 153 ifeq ("$(origin W)", "command line") !! 97 ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) 154 KBUILD_EXTRA_WARN := $(W) !! 98 quiet=silent_ 155 endif 99 endif 156 100 157 export KBUILD_EXTRA_WARN !! 101 export quiet Q KBUILD_VERBOSE 158 102 159 # Kbuild will save output files in the current 103 # Kbuild will save output files in the current working directory. 160 # This does not need to match to the root of t 104 # This does not need to match to the root of the kernel source tree. 161 # 105 # 162 # For example, you can do this: 106 # For example, you can do this: 163 # 107 # 164 # cd /dir/to/store/output/files; make -f /dir 108 # cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile 165 # 109 # 166 # If you want to save output files in a differ 110 # If you want to save output files in a different location, there are 167 # two syntaxes to specify it. 111 # two syntaxes to specify it. 168 # 112 # 169 # 1) O= 113 # 1) O= 170 # Use "make O=dir/to/store/output/files/" 114 # Use "make O=dir/to/store/output/files/" 171 # 115 # 172 # 2) Set KBUILD_OUTPUT 116 # 2) Set KBUILD_OUTPUT 173 # Set the environment variable KBUILD_OUTPUT t 117 # Set the environment variable KBUILD_OUTPUT to point to the output directory. 174 # export KBUILD_OUTPUT=dir/to/store/output/fil 118 # export KBUILD_OUTPUT=dir/to/store/output/files/; make 175 # 119 # 176 # The O= assignment takes precedence over the 120 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 177 # variable. 121 # variable. 178 122 179 # Do we want to change the working directory? 123 # Do we want to change the working directory? 180 ifeq ("$(origin O)", "command line") 124 ifeq ("$(origin O)", "command line") 181 KBUILD_OUTPUT := $(O) 125 KBUILD_OUTPUT := $(O) 182 endif 126 endif 183 127 184 ifneq ($(KBUILD_OUTPUT),) 128 ifneq ($(KBUILD_OUTPUT),) 185 # $(realpath ...) gets empty if the path does !! 129 # Make's built-in functions such as $(abspath ...), $(realpath ...) cannot 186 $(shell mkdir -p "$(KBUILD_OUTPUT)") !! 130 # expand a shell special character '~'. We use a somewhat tedious way here. >> 131 abs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) >> 132 $(if $(abs_objtree),, \ >> 133 $(error failed to create output directory "$(KBUILD_OUTPUT)")) >> 134 187 # $(realpath ...) resolves symlinks 135 # $(realpath ...) resolves symlinks 188 abs_objtree := $(realpath $(KBUILD_OUTPUT)) !! 136 abs_objtree := $(realpath $(abs_objtree)) 189 $(if $(abs_objtree),,$(error failed to create !! 137 else >> 138 abs_objtree := $(CURDIR) 190 endif # ifneq ($(KBUILD_OUTPUT),) 139 endif # ifneq ($(KBUILD_OUTPUT),) 191 140 192 ifneq ($(words $(subst :, ,$(abs_srctree))), 1 !! 141 ifeq ($(abs_objtree),$(CURDIR)) 193 $(error source directory cannot contain spaces !! 142 # Suppress "Entering directory ..." unless we are changing the work directory. >> 143 MAKEFLAGS += --no-print-directory >> 144 else >> 145 need-sub-make := 1 194 endif 146 endif 195 147 196 export sub_make_done := 1 !! 148 abs_srctree := $(realpath $(dir $(lastword $(MAKEFILE_LIST)))) 197 149 198 endif # sub_make_done !! 150 ifneq ($(words $(subst :, ,$(abs_srctree))), 1) >> 151 $(error source directory cannot contain spaces or colons) >> 152 endif 199 153 200 ifeq ($(abs_objtree),$(CURDIR)) !! 154 ifneq ($(abs_srctree),$(abs_objtree)) 201 # Suppress "Entering directory ..." if we are !! 155 # Look for make include files relative to root of kernel src 202 no-print-directory := --no-print-directory !! 156 # 203 else !! 157 # This does not become effective immediately because MAKEFLAGS is re-parsed 204 # Recursion to show "Entering directory ..." !! 158 # once after the Makefile is read. We need to invoke sub-make. >> 159 MAKEFLAGS += --include-dir=$(abs_srctree) 205 need-sub-make := 1 160 need-sub-make := 1 206 endif 161 endif 207 162 208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 163 this-makefile := $(lastword $(MAKEFILE_LIST)) 209 # If --no-print-directory is unset, recurse on !! 164 210 # You may end up recursing into __sub-make twi !! 165 ifneq ($(filter 3.%,$(MAKE_VERSION)),) 211 # behavior change in GNU Make 4.4.1. !! 166 # 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x >> 167 # We need to invoke sub-make to avoid implicit rules in the top Makefile. 212 need-sub-make := 1 168 need-sub-make := 1 >> 169 # Cancel implicit rules for this Makefile. >> 170 $(this-makefile): ; 213 endif 171 endif 214 172 >> 173 export abs_srctree abs_objtree >> 174 export sub_make_done := 1 >> 175 215 ifeq ($(need-sub-make),1) 176 ifeq ($(need-sub-make),1) 216 177 217 PHONY += $(MAKECMDGOALS) __sub-make 178 PHONY += $(MAKECMDGOALS) __sub-make 218 179 219 $(filter-out $(this-makefile), $(MAKECMDGOALS) 180 $(filter-out $(this-makefile), $(MAKECMDGOALS)) __all: __sub-make 220 @: 181 @: 221 182 222 # Invoke a second make in the output directory 183 # Invoke a second make in the output directory, passing relevant variables 223 __sub-make: 184 __sub-make: 224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 185 $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS) 225 -f $(abs_srctree)/Makefile $(MAKECMDGO << 226 186 227 else # need-sub-make !! 187 endif # need-sub-make >> 188 endif # sub_make_done 228 189 229 # We process the rest of the Makefile if this 190 # We process the rest of the Makefile if this is the final invocation of make >> 191 ifeq ($(need-sub-make),) >> 192 >> 193 # Do not print "Entering directory ...", >> 194 # but we want to display it when entering to the output directory >> 195 # so that IDEs/editors are able to understand relative filenames. >> 196 MAKEFLAGS += --no-print-directory >> 197 >> 198 # Call a source code checker (by default, "sparse") as part of the >> 199 # C compilation. >> 200 # >> 201 # Use 'make C=1' to enable checking of only re-compiled files. >> 202 # Use 'make C=2' to enable checking of *all* source files, regardless >> 203 # of whether they are re-compiled or not. >> 204 # >> 205 # See the file "Documentation/dev-tools/sparse.rst" for more details, >> 206 # including where to get the "sparse" utility. >> 207 >> 208 ifeq ("$(origin C)", "command line") >> 209 KBUILD_CHECKSRC = $(C) >> 210 endif >> 211 ifndef KBUILD_CHECKSRC >> 212 KBUILD_CHECKSRC = 0 >> 213 endif >> 214 >> 215 # Use make M=dir or set the environment variable KBUILD_EXTMOD to specify the >> 216 # directory of external module to build. Setting M= takes precedence. >> 217 ifeq ("$(origin M)", "command line") >> 218 KBUILD_EXTMOD := $(M) >> 219 endif >> 220 >> 221 $(if $(word 2, $(KBUILD_EXTMOD)), \ >> 222 $(error building multiple external modules is not supported)) >> 223 >> 224 export KBUILD_CHECKSRC KBUILD_EXTMOD >> 225 >> 226 extmod-prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/) 230 227 231 ifeq ($(abs_srctree),$(abs_objtree)) 228 ifeq ($(abs_srctree),$(abs_objtree)) 232 # building in the source tree 229 # building in the source tree 233 srctree := . 230 srctree := . 234 building_out_of_srctree := 231 building_out_of_srctree := 235 else 232 else 236 ifeq ($(abs_srctree)/,$(dir $(abs_objt 233 ifeq ($(abs_srctree)/,$(dir $(abs_objtree))) 237 # building in a subdirectory o 234 # building in a subdirectory of the source tree 238 srctree := .. 235 srctree := .. 239 else 236 else 240 srctree := $(abs_srctree) 237 srctree := $(abs_srctree) 241 endif 238 endif 242 building_out_of_srctree := 1 239 building_out_of_srctree := 1 243 endif 240 endif 244 241 245 ifneq ($(KBUILD_ABS_SRCTREE),) 242 ifneq ($(KBUILD_ABS_SRCTREE),) 246 srctree := $(abs_srctree) 243 srctree := $(abs_srctree) 247 endif 244 endif 248 245 249 objtree := . 246 objtree := . 250 << 251 VPATH := << 252 << 253 ifeq ($(KBUILD_EXTMOD),) << 254 ifdef building_out_of_srctree << 255 VPATH := $(srctree) 247 VPATH := $(srctree) 256 endif << 257 endif << 258 248 259 export building_out_of_srctree srctree objtree 249 export building_out_of_srctree srctree objtree VPATH 260 250 261 # To make sure we do not include .config for a 251 # To make sure we do not include .config for any of the *config targets 262 # catch them early, and hand them over to scri 252 # catch them early, and hand them over to scripts/kconfig/Makefile 263 # It is allowed to specify more targets when c 253 # It is allowed to specify more targets when calling make, including 264 # mixing *config targets and build targets. 254 # mixing *config targets and build targets. 265 # For example 'make oldconfig all'. 255 # For example 'make oldconfig all'. 266 # Detect when mixed targets is specified, and 256 # Detect when mixed targets is specified, and make a second invocation 267 # of make so .config is not included in this c 257 # of make so .config is not included in this case either (for *config). 268 258 269 version_h := include/generated/uapi/linux/vers 259 version_h := include/generated/uapi/linux/version.h >> 260 old_version_h := include/linux/version.h 270 261 271 clean-targets := %clean mrproper cleandocs 262 clean-targets := %clean mrproper cleandocs 272 no-dot-config-targets := $(clean-targets) \ 263 no-dot-config-targets := $(clean-targets) \ 273 cscope gtags TAGS tag 264 cscope gtags TAGS tags help% %docs check% coccicheck \ 274 $(version_h) headers 265 $(version_h) headers headers_% archheaders archscripts \ 275 %asm-generic kernelve 266 %asm-generic kernelversion %src-pkg dt_binding_check \ 276 outputmakefile rustav !! 267 outputmakefile 277 no-sync-config-targets := $(no-dot-config-targ !! 268 no-sync-config-targets := $(no-dot-config-targets) install %install \ 278 image_name !! 269 kernelrelease 279 single-targets := %.a %.i %.ko %.lds %.ll %.ls !! 270 single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/ 280 271 281 config-build := 272 config-build := 282 mixed-build := 273 mixed-build := 283 need-config := 1 274 need-config := 1 284 may-sync-config := 1 275 may-sync-config := 1 285 single-build := 276 single-build := 286 277 287 ifneq ($(filter $(no-dot-config-targets), $(MA 278 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 288 ifeq ($(filter-out $(no-dot-config-targets !! 279 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 289 need-config := !! 280 need-config := 290 endif !! 281 endif 291 endif 282 endif 292 283 293 ifneq ($(filter $(no-sync-config-targets), $(M 284 ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) 294 ifeq ($(filter-out $(no-sync-config-target !! 285 ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) 295 may-sync-config := !! 286 may-sync-config := 296 endif !! 287 endif 297 endif 288 endif 298 289 299 need-compiler := $(may-sync-config) << 300 << 301 ifneq ($(KBUILD_EXTMOD),) 290 ifneq ($(KBUILD_EXTMOD),) 302 may-sync-config := !! 291 may-sync-config := 303 endif 292 endif 304 293 305 ifeq ($(KBUILD_EXTMOD),) 294 ifeq ($(KBUILD_EXTMOD),) 306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 295 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 307 config-build := 1 !! 296 config-build := 1 308 ifneq ($(words $(MAKECMDGOALS)),1) !! 297 ifneq ($(words $(MAKECMDGOALS)),1) 309 mixed-build := 1 !! 298 mixed-build := 1 >> 299 endif 310 endif 300 endif 311 endif << 312 endif 301 endif 313 302 314 # We cannot build single targets and the other 303 # We cannot build single targets and the others at the same time 315 ifneq ($(filter $(single-targets), $(MAKECMDGO 304 ifneq ($(filter $(single-targets), $(MAKECMDGOALS)),) 316 single-build := 1 !! 305 single-build := 1 317 ifneq ($(filter-out $(single-targets), $(M !! 306 ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),) 318 mixed-build := 1 !! 307 mixed-build := 1 319 endif !! 308 endif 320 endif 309 endif 321 310 322 # For "make -j clean all", "make -j mrproper d 311 # For "make -j clean all", "make -j mrproper defconfig all", etc. 323 ifneq ($(filter $(clean-targets),$(MAKECMDGOAL 312 ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 324 ifneq ($(filter-out $(clean-targets),$(MAK !! 313 ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 325 mixed-build := 1 !! 314 mixed-build := 1 326 endif !! 315 endif 327 endif 316 endif 328 317 329 # install and modules_install need also be pro 318 # install and modules_install need also be processed one by one 330 ifneq ($(filter install,$(MAKECMDGOALS)),) 319 ifneq ($(filter install,$(MAKECMDGOALS)),) 331 ifneq ($(filter modules_install,$(MAKECMDG !! 320 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 332 mixed-build := 1 !! 321 mixed-build := 1 333 endif !! 322 endif 334 endif 323 endif 335 324 336 ifdef mixed-build 325 ifdef mixed-build 337 # ============================================ 326 # =========================================================================== 338 # We're called with mixed targets (*config and 327 # We're called with mixed targets (*config and build targets). 339 # Handle them one by one. 328 # Handle them one by one. 340 329 341 PHONY += $(MAKECMDGOALS) __build_one_by_one 330 PHONY += $(MAKECMDGOALS) __build_one_by_one 342 331 343 $(MAKECMDGOALS): __build_one_by_one 332 $(MAKECMDGOALS): __build_one_by_one 344 @: 333 @: 345 334 346 __build_one_by_one: 335 __build_one_by_one: 347 $(Q)set -e; \ 336 $(Q)set -e; \ 348 for i in $(MAKECMDGOALS); do \ 337 for i in $(MAKECMDGOALS); do \ 349 $(MAKE) -f $(srctree)/Makefile 338 $(MAKE) -f $(srctree)/Makefile $$i; \ 350 done 339 done 351 340 352 else # !mixed-build 341 else # !mixed-build 353 342 354 include $(srctree)/scripts/Kbuild.include !! 343 include scripts/Kbuild.include 355 344 356 # Read KERNELRELEASE from include/config/kerne 345 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 357 KERNELRELEASE = $(call read-file, include/conf !! 346 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. 347 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA 348 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 360 349 361 include $(srctree)/scripts/subarch.include !! 350 include scripts/subarch.include 362 351 363 # Cross compiling and selecting different set 352 # Cross compiling and selecting different set of gcc/bin-utils 364 # -------------------------------------------- 353 # --------------------------------------------------------------------------- 365 # 354 # 366 # When performing cross compilation for other 355 # When performing cross compilation for other architectures ARCH shall be set 367 # to the target architecture. (See arch/* for 356 # to the target architecture. (See arch/* for the possibilities). 368 # ARCH can be set during invocation of make: 357 # ARCH can be set during invocation of make: 369 # make ARCH=arm64 !! 358 # make ARCH=ia64 370 # Another way is to have ARCH set in the envir 359 # Another way is to have ARCH set in the environment. 371 # The default ARCH is the host where make is e 360 # The default ARCH is the host where make is executed. 372 361 373 # CROSS_COMPILE specify the prefix used for al 362 # CROSS_COMPILE specify the prefix used for all executables used 374 # during compilation. Only gcc and related bin 363 # during compilation. Only gcc and related bin-utils executables 375 # are prefixed with $(CROSS_COMPILE). 364 # are prefixed with $(CROSS_COMPILE). 376 # CROSS_COMPILE can be set on the command line 365 # CROSS_COMPILE can be set on the command line 377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 366 # make CROSS_COMPILE=ia64-linux- 378 # Alternatively CROSS_COMPILE can be set in th 367 # Alternatively CROSS_COMPILE can be set in the environment. 379 # Default value for CROSS_COMPILE is not to pr 368 # Default value for CROSS_COMPILE is not to prefix executables 380 # Note: Some architectures assign CROSS_COMPIL 369 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 381 ARCH ?= $(SUBARCH) 370 ARCH ?= $(SUBARCH) 382 371 383 # Architecture as present in compile.h 372 # Architecture as present in compile.h 384 UTS_MACHINE := $(ARCH) 373 UTS_MACHINE := $(ARCH) 385 SRCARCH := $(ARCH) 374 SRCARCH := $(ARCH) 386 375 387 # Additional ARCH settings for x86 376 # Additional ARCH settings for x86 388 ifeq ($(ARCH),i386) 377 ifeq ($(ARCH),i386) 389 SRCARCH := x86 378 SRCARCH := x86 390 endif 379 endif 391 ifeq ($(ARCH),x86_64) 380 ifeq ($(ARCH),x86_64) 392 SRCARCH := x86 381 SRCARCH := x86 393 endif 382 endif 394 383 395 # Additional ARCH settings for sparc 384 # Additional ARCH settings for sparc 396 ifeq ($(ARCH),sparc32) 385 ifeq ($(ARCH),sparc32) 397 SRCARCH := sparc 386 SRCARCH := sparc 398 endif 387 endif 399 ifeq ($(ARCH),sparc64) 388 ifeq ($(ARCH),sparc64) 400 SRCARCH := sparc 389 SRCARCH := sparc 401 endif 390 endif 402 391 403 # Additional ARCH settings for parisc !! 392 # Additional ARCH settings for sh 404 ifeq ($(ARCH),parisc64) !! 393 ifeq ($(ARCH),sh64) 405 SRCARCH := parisc !! 394 SRCARCH := sh 406 endif << 407 << 408 export cross_compiling := << 409 ifneq ($(SRCARCH),$(SUBARCH)) << 410 cross_compiling := 1 << 411 endif 395 endif 412 396 413 KCONFIG_CONFIG ?= .config 397 KCONFIG_CONFIG ?= .config 414 export KCONFIG_CONFIG 398 export KCONFIG_CONFIG 415 399 >> 400 # Default file for 'make defconfig'. This may be overridden by arch-Makefile. >> 401 export KBUILD_DEFCONFIG := defconfig >> 402 416 # SHELL used by kbuild 403 # SHELL used by kbuild 417 CONFIG_SHELL := sh 404 CONFIG_SHELL := sh 418 405 419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 406 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG 407 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d 408 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 422 409 423 ifneq ($(LLVM),) 410 ifneq ($(LLVM),) 424 ifneq ($(filter %/,$(LLVM)),) !! 411 HOSTCC = clang 425 LLVM_PREFIX := $(LLVM) !! 412 HOSTCXX = clang++ 426 else ifneq ($(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 413 else 433 HOSTCC = gcc 414 HOSTCC = gcc 434 HOSTCXX = g++ 415 HOSTCXX = g++ 435 endif 416 endif 436 HOSTRUSTC = rustc << 437 HOSTPKG_CONFIG = pkg-config << 438 417 439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto !! 418 export KBUILD_USERCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \ 440 -O2 -fomit-frame-poin !! 419 -O2 -fomit-frame-pointer -std=gnu89 441 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) !! 420 export KBUILD_USERLDFLAGS := 442 KBUILD_USERLDFLAGS := $(USERLDFLAGS) !! 421 443 !! 422 KBUILD_HOSTCFLAGS := $(KBUILD_USERCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS) 444 # These flags apply to all Rust code in the tr !! 423 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 424 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 469 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOST 425 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 470 426 471 # Make variables (CC, etc...) 427 # Make variables (CC, etc...) 472 CPP = $(CC) -E 428 CPP = $(CC) -E 473 ifneq ($(LLVM),) 429 ifneq ($(LLVM),) 474 CC = $(LLVM_PREFIX)clang$(LLVM_SU !! 430 CC = clang 475 LD = $(LLVM_PREFIX)ld.lld$(LLVM_S !! 431 LD = ld.lld 476 AR = $(LLVM_PREFIX)llvm-ar$(LLVM_ !! 432 AR = llvm-ar 477 NM = $(LLVM_PREFIX)llvm-nm$(LLVM_ !! 433 NM = llvm-nm 478 OBJCOPY = $(LLVM_PREFIX)llvm-objcopy$( !! 434 OBJCOPY = llvm-objcopy 479 OBJDUMP = $(LLVM_PREFIX)llvm-objdump$( !! 435 OBJDUMP = llvm-objdump 480 READELF = $(LLVM_PREFIX)llvm-readelf$( !! 436 READELF = llvm-readelf 481 STRIP = $(LLVM_PREFIX)llvm-strip$(LL !! 437 OBJSIZE = llvm-size >> 438 STRIP = llvm-strip 482 else 439 else 483 CC = $(CROSS_COMPILE)gcc 440 CC = $(CROSS_COMPILE)gcc 484 LD = $(CROSS_COMPILE)ld 441 LD = $(CROSS_COMPILE)ld 485 AR = $(CROSS_COMPILE)ar 442 AR = $(CROSS_COMPILE)ar 486 NM = $(CROSS_COMPILE)nm 443 NM = $(CROSS_COMPILE)nm 487 OBJCOPY = $(CROSS_COMPILE)objcopy 444 OBJCOPY = $(CROSS_COMPILE)objcopy 488 OBJDUMP = $(CROSS_COMPILE)objdump 445 OBJDUMP = $(CROSS_COMPILE)objdump 489 READELF = $(CROSS_COMPILE)readelf 446 READELF = $(CROSS_COMPILE)readelf >> 447 OBJSIZE = $(CROSS_COMPILE)size 490 STRIP = $(CROSS_COMPILE)strip 448 STRIP = $(CROSS_COMPILE)strip 491 endif 449 endif 492 RUSTC = rustc << 493 RUSTDOC = rustdoc << 494 RUSTFMT = rustfmt << 495 CLIPPY_DRIVER = clippy-driver << 496 BINDGEN = bindgen << 497 PAHOLE = pahole 450 PAHOLE = pahole 498 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve << 499 LEX = flex 451 LEX = flex 500 YACC = bison 452 YACC = bison 501 AWK = awk 453 AWK = awk 502 INSTALLKERNEL := installkernel 454 INSTALLKERNEL := installkernel >> 455 DEPMOD = /sbin/depmod 503 PERL = perl 456 PERL = perl >> 457 PYTHON = python 504 PYTHON3 = python3 458 PYTHON3 = python3 505 CHECK = sparse 459 CHECK = sparse 506 BASH = bash 460 BASH = bash 507 KGZIP = gzip 461 KGZIP = gzip 508 KBZIP2 = bzip2 462 KBZIP2 = bzip2 509 KLZOP = lzop 463 KLZOP = lzop 510 LZMA = lzma 464 LZMA = lzma 511 LZ4 = lz4c 465 LZ4 = lz4c 512 XZ = xz 466 XZ = xz 513 ZSTD = zstd << 514 467 515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC 468 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 516 -Wbitwise -Wno-return-void - 469 -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 517 NOSTDINC_FLAGS := 470 NOSTDINC_FLAGS := 518 CFLAGS_MODULE = 471 CFLAGS_MODULE = 519 RUSTFLAGS_MODULE = << 520 AFLAGS_MODULE = 472 AFLAGS_MODULE = 521 LDFLAGS_MODULE = 473 LDFLAGS_MODULE = 522 CFLAGS_KERNEL = 474 CFLAGS_KERNEL = 523 RUSTFLAGS_KERNEL = << 524 AFLAGS_KERNEL = 475 AFLAGS_KERNEL = 525 LDFLAGS_vmlinux = 476 LDFLAGS_vmlinux = 526 477 527 # Use USERINCLUDE when you must reference the 478 # Use USERINCLUDE when you must reference the UAPI directories only. 528 USERINCLUDE := \ 479 USERINCLUDE := \ 529 -I$(srctree)/arch/$(SRCARCH)/i 480 -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 530 -I$(objtree)/arch/$(SRCARCH)/i 481 -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 531 -I$(srctree)/include/uapi \ 482 -I$(srctree)/include/uapi \ 532 -I$(objtree)/include/generated 483 -I$(objtree)/include/generated/uapi \ 533 -include $(srctree)/include/li << 534 -include $(srctree)/include/li 484 -include $(srctree)/include/linux/kconfig.h 535 485 536 # Use LINUXINCLUDE when you must reference the 486 # Use LINUXINCLUDE when you must reference the include/ directory. 537 # Needed to be compatible with the O= option 487 # Needed to be compatible with the O= option 538 LINUXINCLUDE := \ 488 LINUXINCLUDE := \ 539 -I$(srctree)/arch/$(SRCARCH)/i 489 -I$(srctree)/arch/$(SRCARCH)/include \ 540 -I$(objtree)/arch/$(SRCARCH)/i 490 -I$(objtree)/arch/$(SRCARCH)/include/generated \ 541 $(if $(building_out_of_srctree 491 $(if $(building_out_of_srctree),-I$(srctree)/include) \ 542 -I$(objtree)/include \ 492 -I$(objtree)/include \ 543 $(USERINCLUDE) 493 $(USERINCLUDE) 544 494 545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 495 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 546 !! 496 KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ 547 KBUILD_CFLAGS := !! 497 -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ 548 KBUILD_CFLAGS += -std=gnu11 !! 498 -Werror=implicit-function-declaration -Werror=implicit-int \ 549 KBUILD_CFLAGS += -fshort-wchar !! 499 -Wno-format-security \ 550 KBUILD_CFLAGS += -funsigned-char !! 500 -std=gnu89 551 KBUILD_CFLAGS += -fno-common << 552 KBUILD_CFLAGS += -fno-PIE << 553 KBUILD_CFLAGS += -fno-strict-aliasing << 554 << 555 KBUILD_CPPFLAGS := -D__KERNEL__ 501 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 := 502 KBUILD_AFLAGS_KERNEL := 565 KBUILD_CFLAGS_KERNEL := 503 KBUILD_CFLAGS_KERNEL := 566 KBUILD_RUSTFLAGS_KERNEL := << 567 KBUILD_AFLAGS_MODULE := -DMODULE 504 KBUILD_AFLAGS_MODULE := -DMODULE 568 KBUILD_CFLAGS_MODULE := -DMODULE 505 KBUILD_CFLAGS_MODULE := -DMODULE 569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE << 570 KBUILD_LDFLAGS_MODULE := 506 KBUILD_LDFLAGS_MODULE := >> 507 export KBUILD_LDS_MODULE := $(srctree)/scripts/module-common.lds 571 KBUILD_LDFLAGS := 508 KBUILD_LDFLAGS := >> 509 GCC_PLUGINS_CFLAGS := 572 CLANG_FLAGS := 510 CLANG_FLAGS := 573 511 574 ifeq ($(KBUILD_CLIPPY),1) !! 512 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC 575 RUSTC_OR_CLIPPY_QUIET := CLIPPY !! 513 export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF PAHOLE LEX YACC AWK INSTALLKERNEL 576 RUSTC_OR_CLIPPY = $(CLIPPY_DRIVER) !! 514 export PERL PYTHON PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX 577 else !! 515 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ 578 RUSTC_OR_CLIPPY_QUIET := RUSTC << 579 RUSTC_OR_CLIPPY = $(RUSTC) << 580 endif << 581 << 582 ifdef RUST_LIB_SRC << 583 export RUST_LIB_SRC << 584 endif << 585 << 586 # Allows the usage of unstable features in sta << 587 export RUSTC_BOOTSTRAP := 1 << 588 << 589 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K << 590 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q << 591 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS << 592 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF << 593 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ << 594 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD << 595 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS 516 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE 596 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS << 597 517 598 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC 518 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 599 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU 519 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 600 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF !! 520 export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN CFLAGS_KCSAN 601 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 521 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 602 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 522 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 603 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 523 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 604 524 605 # Files to ignore in find ... statements 525 # Files to ignore in find ... statements 606 526 607 export RCS_FIND_IGNORE := \( -name SCCS -o -na 527 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 608 -name CVS -o -name . 528 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 609 -prune -o 529 -prune -o >> 530 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ >> 531 --exclude CVS --exclude .pc --exclude .hg --exclude .git 610 532 611 # ============================================ 533 # =========================================================================== 612 # Rules shared between *config targets and bui 534 # Rules shared between *config targets and build targets 613 535 614 # Basic helpers built in scripts/basic/ 536 # Basic helpers built in scripts/basic/ 615 PHONY += scripts_basic 537 PHONY += scripts_basic 616 scripts_basic: 538 scripts_basic: 617 $(Q)$(MAKE) $(build)=scripts/basic 539 $(Q)$(MAKE) $(build)=scripts/basic >> 540 $(Q)rm -f .tmp_quiet_recordmcount 618 541 619 PHONY += outputmakefile 542 PHONY += outputmakefile 620 ifdef building_out_of_srctree << 621 # Before starting out-of-tree build, make sure 543 # Before starting out-of-tree build, make sure the source tree is clean. 622 # outputmakefile generates a Makefile in the o 544 # outputmakefile generates a Makefile in the output directory, if using a 623 # separate output directory. This allows conve 545 # separate output directory. This allows convenient use of make in the 624 # output directory. 546 # output directory. 625 # At the same time when output Makefile genera 547 # At the same time when output Makefile generated, generate .gitignore to 626 # ignore whole output directory 548 # ignore whole output directory 627 << 628 quiet_cmd_makefile = GEN Makefile << 629 cmd_makefile = { \ << 630 echo "\# Automatically generated by $( << 631 echo "include $(srctree)/Makefile"; \ << 632 } > Makefile << 633 << 634 outputmakefile: 549 outputmakefile: 635 @if [ -f $(srctree)/.config -o \ !! 550 ifdef building_out_of_srctree >> 551 $(Q)if [ -f $(srctree)/.config -o \ 636 -d $(srctree)/include/config 552 -d $(srctree)/include/config -o \ 637 -d $(srctree)/arch/$(SRCARCH) 553 -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \ 638 echo >&2 "***"; \ 554 echo >&2 "***"; \ 639 echo >&2 "*** The source tree 555 echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \ 640 echo >&2 "*** in $(abs_srctree 556 echo >&2 "*** in $(abs_srctree)";\ 641 echo >&2 "***"; \ 557 echo >&2 "***"; \ 642 false; \ 558 false; \ 643 fi 559 fi 644 $(Q)ln -fsn $(srctree) source 560 $(Q)ln -fsn $(srctree) source 645 $(call cmd,makefile) !! 561 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) 646 $(Q)test -e .gitignore || \ 562 $(Q)test -e .gitignore || \ 647 { echo "# this is build directory, ign 563 { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore 648 endif 564 endif 649 565 >> 566 ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),) >> 567 ifneq ($(CROSS_COMPILE),) >> 568 CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) >> 569 GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) >> 570 CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE)) >> 571 GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) >> 572 endif >> 573 ifneq ($(GCC_TOOLCHAIN),) >> 574 CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN) >> 575 endif >> 576 ifneq ($(LLVM_IAS),1) >> 577 CLANG_FLAGS += -no-integrated-as >> 578 endif >> 579 CLANG_FLAGS += -Werror=unknown-warning-option >> 580 KBUILD_CFLAGS += $(CLANG_FLAGS) >> 581 KBUILD_AFLAGS += $(CLANG_FLAGS) >> 582 export CLANG_FLAGS >> 583 endif >> 584 650 # The expansion should be delayed until arch/$ 585 # The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 651 # Some architectures define CROSS_COMPILE in a 586 # Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 652 # CC_VERSION_TEXT is referenced from Kconfig ( 587 # CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 653 # and from include/config/auto.conf.cmd to det 588 # and from include/config/auto.conf.cmd to detect the compiler upgrade. 654 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC !! 589 CC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1) 655 << 656 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), << 657 include $(srctree)/scripts/Makefile.clang << 658 endif << 659 << 660 # Include this also for config targets because << 661 # cc-cross-prefix to determine CROSS_COMPILE. << 662 ifdef need-compiler << 663 include $(srctree)/scripts/Makefile.compiler << 664 endif << 665 590 666 ifdef config-build 591 ifdef config-build 667 # ============================================ 592 # =========================================================================== 668 # *config targets only - make sure prerequisit 593 # *config targets only - make sure prerequisites are updated, and descend 669 # in scripts/kconfig to make the *config targe 594 # in scripts/kconfig to make the *config target 670 595 671 # Read arch-specific Makefile to set KBUILD_DE !! 596 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 672 # KBUILD_DEFCONFIG may point out an alternativ 597 # KBUILD_DEFCONFIG may point out an alternative default configuration 673 # used for 'make defconfig' 598 # used for 'make defconfig' 674 include $(srctree)/arch/$(SRCARCH)/Makefile !! 599 include arch/$(SRCARCH)/Makefile 675 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS 600 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 676 601 677 config: outputmakefile scripts_basic FORCE 602 config: outputmakefile scripts_basic FORCE 678 $(Q)$(MAKE) $(build)=scripts/kconfig $ 603 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 679 604 680 %config: outputmakefile scripts_basic FORCE 605 %config: outputmakefile scripts_basic FORCE 681 $(Q)$(MAKE) $(build)=scripts/kconfig $ 606 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 682 607 683 else #!config-build 608 else #!config-build 684 # ============================================ 609 # =========================================================================== 685 # Build targets only - this includes vmlinux, !! 610 # Build targets only - this includes vmlinux, arch specific targets, clean 686 # targets and others. In general all targets e 611 # targets and others. In general all targets except *config targets. 687 612 688 # If building an external module we do not car 613 # If building an external module we do not care about the all: rule 689 # but instead __all depend on modules 614 # but instead __all depend on modules 690 PHONY += all 615 PHONY += all 691 ifeq ($(KBUILD_EXTMOD),) 616 ifeq ($(KBUILD_EXTMOD),) 692 __all: all 617 __all: all 693 else 618 else 694 __all: modules 619 __all: modules 695 endif 620 endif 696 621 697 targets := << 698 << 699 # Decide whether to build built-in, modular, o 622 # Decide whether to build built-in, modular, or both. 700 # Normally, just do built-in. 623 # Normally, just do built-in. 701 624 702 KBUILD_MODULES := 625 KBUILD_MODULES := 703 KBUILD_BUILTIN := 1 626 KBUILD_BUILTIN := 1 704 627 705 # If we have only "make modules", don't compil 628 # If we have only "make modules", don't compile built-in objects. 706 ifeq ($(MAKECMDGOALS),modules) 629 ifeq ($(MAKECMDGOALS),modules) 707 KBUILD_BUILTIN := 630 KBUILD_BUILTIN := 708 endif 631 endif 709 632 710 # If we have "make <whatever> modules", compil 633 # If we have "make <whatever> modules", compile modules 711 # in addition to whatever we do anyway. 634 # in addition to whatever we do anyway. 712 # Just "make" or "make all" shall build module 635 # Just "make" or "make all" shall build modules as well 713 636 714 ifneq ($(filter all modules nsdeps %compile_co !! 637 ifneq ($(filter all modules nsdeps,$(MAKECMDGOALS)),) 715 KBUILD_MODULES := 1 638 KBUILD_MODULES := 1 716 endif 639 endif 717 640 718 ifeq ($(MAKECMDGOALS),) 641 ifeq ($(MAKECMDGOALS),) 719 KBUILD_MODULES := 1 642 KBUILD_MODULES := 1 720 endif 643 endif 721 644 722 export KBUILD_MODULES KBUILD_BUILTIN 645 export KBUILD_MODULES KBUILD_BUILTIN 723 646 724 ifdef need-config 647 ifdef need-config 725 include include/config/auto.conf 648 include include/config/auto.conf 726 endif 649 endif 727 650 728 ifeq ($(KBUILD_EXTMOD),) 651 ifeq ($(KBUILD_EXTMOD),) 729 # Objects we will link into vmlinux / subdirs 652 # Objects we will link into vmlinux / subdirs we need to visit 730 core-y := !! 653 core-y := init/ usr/ 731 drivers-y := !! 654 drivers-y := drivers/ sound/ >> 655 drivers-$(CONFIG_SAMPLES) += samples/ >> 656 drivers-y += net/ virt/ 732 libs-y := lib/ 657 libs-y := lib/ 733 endif # KBUILD_EXTMOD 658 endif # KBUILD_EXTMOD 734 659 735 # The all: target is the default when no targe 660 # The all: target is the default when no target is given on the 736 # command line. 661 # command line. 737 # This allow a user to issue only 'make' to bu 662 # This allow a user to issue only 'make' to build a kernel including modules 738 # Defaults to vmlinux, but the arch makefile u 663 # Defaults to vmlinux, but the arch makefile usually adds further targets 739 all: vmlinux 664 all: vmlinux 740 665 741 CFLAGS_GCOV := -fprofile-arcs -ftest-cover !! 666 CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ 742 ifdef CONFIG_CC_IS_GCC !! 667 $(call cc-option,-fno-tree-loop-im) \ 743 CFLAGS_GCOV += -fno-tree-loop-im !! 668 $(call cc-disable-warning,maybe-uninitialized,) 744 endif << 745 export CFLAGS_GCOV 669 export CFLAGS_GCOV 746 670 747 # The arch Makefiles can override CC_FLAGS_FTR 671 # The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. 748 ifdef CONFIG_FUNCTION_TRACER 672 ifdef CONFIG_FUNCTION_TRACER 749 CC_FLAGS_FTRACE := -pg 673 CC_FLAGS_FTRACE := -pg 750 endif 674 endif 751 675 752 include $(srctree)/arch/$(SRCARCH)/Makefile !! 676 RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register >> 677 RETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register >> 678 RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk >> 679 RETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline >> 680 RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG))) >> 681 RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG))) >> 682 export RETPOLINE_CFLAGS >> 683 export RETPOLINE_VDSO_CFLAGS >> 684 >> 685 include arch/$(SRCARCH)/Makefile 753 686 754 ifdef need-config 687 ifdef need-config 755 ifdef may-sync-config 688 ifdef may-sync-config 756 # Read in dependencies to all Kconfig* files, 689 # Read in dependencies to all Kconfig* files, make sure to run syncconfig if 757 # changes are detected. This should be include 690 # changes are detected. This should be included after arch/$(SRCARCH)/Makefile 758 # because some architectures define CROSS_COMP 691 # because some architectures define CROSS_COMPILE there. 759 include include/config/auto.conf.cmd 692 include include/config/auto.conf.cmd 760 693 761 $(KCONFIG_CONFIG): 694 $(KCONFIG_CONFIG): 762 @echo >&2 '***' 695 @echo >&2 '***' 763 @echo >&2 '*** Configuration file "$@" 696 @echo >&2 '*** Configuration file "$@" not found!' 764 @echo >&2 '***' 697 @echo >&2 '***' 765 @echo >&2 '*** Please run some configu 698 @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or' 766 @echo >&2 '*** "make menuconfig" or "m 699 @echo >&2 '*** "make menuconfig" or "make xconfig").' 767 @echo >&2 '***' 700 @echo >&2 '***' 768 @/bin/false 701 @/bin/false 769 702 770 # The actual configuration files used during t 703 # The actual configuration files used during the build are stored in 771 # include/generated/ and include/config/. Upda 704 # include/generated/ and include/config/. Update them if .config is newer than 772 # include/config/auto.conf (which mirrors .con 705 # include/config/auto.conf (which mirrors .config). 773 # 706 # 774 # This exploits the 'multi-target pattern rule 707 # This exploits the 'multi-target pattern rule' trick. 775 # The syncconfig should be executed only once 708 # The syncconfig should be executed only once to make all the targets. 776 # (Note: use the grouped target '&:' when we b 709 # (Note: use the grouped target '&:' when we bump to GNU Make 4.3) 777 # !! 710 %/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h: $(KCONFIG_CONFIG) 778 # Do not use $(call cmd,...) here. That would << 779 # so you cannot notice that Kconfig is waiting << 780 %/config/auto.conf %/config/auto.conf.cmd %/ge << 781 $(Q)$(kecho) " SYNC $@" << 782 $(Q)$(MAKE) -f $(srctree)/Makefile syn 711 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 783 else # !may-sync-config 712 else # !may-sync-config 784 # External modules and some install targets ne 713 # External modules and some install targets need include/generated/autoconf.h 785 # and include/config/auto.conf but do not care 714 # and include/config/auto.conf but do not care if they are up-to-date. 786 # Use auto.conf to trigger the test 715 # Use auto.conf to trigger the test 787 PHONY += include/config/auto.conf 716 PHONY += include/config/auto.conf 788 717 789 include/config/auto.conf: 718 include/config/auto.conf: 790 @test -e include/generated/autoconf.h !! 719 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 791 echo >&2; 720 echo >&2; \ 792 echo >&2 " ERROR: Kernel configuratio 721 echo >&2 " ERROR: Kernel configuration is invalid."; \ 793 echo >&2 " include/generated/a 722 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 794 echo >&2 " Run 'make oldconfig 723 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 795 echo >&2 ; 724 echo >&2 ; \ 796 /bin/false) 725 /bin/false) 797 726 798 endif # may-sync-config 727 endif # may-sync-config 799 endif # need-config 728 endif # need-config 800 729 801 KBUILD_CFLAGS += -fno-delete-null-pointer-ch !! 730 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) >> 731 KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) >> 732 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) >> 733 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) >> 734 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 802 735 803 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 736 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 804 KBUILD_CFLAGS += -O2 737 KBUILD_CFLAGS += -O2 805 KBUILD_RUSTFLAGS += -Copt-level=2 !! 738 else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 >> 739 KBUILD_CFLAGS += -O3 806 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 740 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 807 KBUILD_CFLAGS += -Os 741 KBUILD_CFLAGS += -Os 808 KBUILD_RUSTFLAGS += -Copt-level=s << 809 endif 742 endif 810 743 811 # Always set `debug-assertions` and `overflow- << 812 # depends on `opt-level` and `debug-assertions << 813 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( << 814 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C << 815 << 816 # Tell gcc to never replace conditional load w 744 # Tell gcc to never replace conditional load with a non-conditional one 817 ifdef CONFIG_CC_IS_GCC << 818 # gcc-10 renamed --param=allow-store-data-race << 819 # -fno-allow-store-data-races. << 820 KBUILD_CFLAGS += $(call cc-option,--param=al 745 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 821 KBUILD_CFLAGS += $(call cc-option,-fno-allow 746 KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) 822 endif !! 747 >> 748 include scripts/Makefile.kcov >> 749 include scripts/Makefile.gcc-plugins 823 750 824 ifdef CONFIG_READABLE_ASM 751 ifdef CONFIG_READABLE_ASM 825 # Disable optimizations that make assembler li 752 # Disable optimizations that make assembler listings hard to read. 826 # reorder blocks reorders the control in the f 753 # reorder blocks reorders the control in the function 827 # ipa clone creates specialized cloned functio 754 # ipa clone creates specialized cloned functions 828 # partial inlining inlines only parts of funct 755 # partial inlining inlines only parts of functions 829 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- !! 756 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ >> 757 $(call cc-option,-fno-ipa-cp-clone,) \ >> 758 $(call cc-option,-fno-partial-inlining) >> 759 endif >> 760 >> 761 ifneq ($(CONFIG_FRAME_WARN),0) >> 762 KBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN) 830 endif 763 endif 831 764 832 stackp-flags-y !! 765 stackp-flags-$(CONFIG_CC_HAS_STACKPROTECTOR_NONE) := -fno-stack-protector 833 stackp-flags-$(CONFIG_STACKPROTECTOR) 766 stackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector 834 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) 767 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong 835 768 836 KBUILD_CFLAGS += $(stackp-flags-y) 769 KBUILD_CFLAGS += $(stackp-flags-y) 837 770 838 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning !! 771 ifdef CONFIG_CC_IS_CLANG 839 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) !! 772 KBUILD_CPPFLAGS += -Qunused-arguments >> 773 KBUILD_CFLAGS += -Wno-format-invalid-specifier >> 774 KBUILD_CFLAGS += -Wno-gnu >> 775 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the >> 776 # source of a reference will be _MergedGlobals and not on of the whitelisted names. >> 777 # See modpost pattern 2 >> 778 KBUILD_CFLAGS += -mno-global-merge >> 779 else >> 780 >> 781 # These warnings generated too much noise in a regular build. >> 782 # Use make W=1 to enable them (see scripts/Makefile.extrawarn) >> 783 KBUILD_CFLAGS += -Wno-unused-but-set-variable 840 784 >> 785 # Warn about unmarked fall-throughs in switch statement. >> 786 # Disabled for clang while comment to attribute conversion happens and >> 787 # https://github.com/ClangBuiltLinux/linux/issues/636 is discussed. >> 788 KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,) >> 789 endif >> 790 >> 791 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) 841 ifdef CONFIG_FRAME_POINTER 792 ifdef CONFIG_FRAME_POINTER 842 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 793 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 843 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y << 844 else 794 else 845 # Some targets (ARM with Thumb2, for example), 795 # Some targets (ARM with Thumb2, for example), can't be built with frame 846 # pointers. For those, we don't have FUNCTION 796 # pointers. For those, we don't have FUNCTION_TRACER automatically 847 # select FRAME_POINTER. However, FUNCTION_TRA 797 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 848 # incompatible with -fomit-frame-pointer with 798 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 849 # -fomit-frame-pointer with FUNCTION_TRACER. 799 # -fomit-frame-pointer with FUNCTION_TRACER. 850 # In the Rust target specification, "frame-poi << 851 # to "may-omit". << 852 ifndef CONFIG_FUNCTION_TRACER 800 ifndef CONFIG_FUNCTION_TRACER 853 KBUILD_CFLAGS += -fomit-frame-pointer 801 KBUILD_CFLAGS += -fomit-frame-pointer 854 endif 802 endif 855 endif 803 endif 856 804 857 # Initialize all stack variables with a 0xAA p !! 805 # Initialize all stack variables with a pattern, if desired. 858 ifdef CONFIG_INIT_STACK_ALL_PATTERN !! 806 ifdef CONFIG_INIT_STACK_ALL 859 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat 807 KBUILD_CFLAGS += -ftrivial-auto-var-init=pattern 860 endif 808 endif 861 809 862 # Initialize all stack variables with a zero v !! 810 DEBUG_CFLAGS := $(call cc-option, -fno-var-tracking-assignments) 863 ifdef CONFIG_INIT_STACK_ALL_ZERO !! 811 864 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer !! 812 ifdef CONFIG_DEBUG_INFO 865 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER !! 813 ifdef CONFIG_DEBUG_INFO_SPLIT 866 # https://github.com/llvm/llvm-project/issues/ !! 814 DEBUG_CFLAGS += -gsplit-dwarf 867 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi !! 815 else 868 export CC_AUTO_VAR_INIT_ZERO_ENABLER !! 816 DEBUG_CFLAGS += -g 869 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA !! 817 endif >> 818 KBUILD_AFLAGS += -Wa,-gdwarf-2 >> 819 endif >> 820 ifdef CONFIG_DEBUG_INFO_DWARF4 >> 821 DEBUG_CFLAGS += -gdwarf-4 870 endif 822 endif >> 823 >> 824 ifdef CONFIG_DEBUG_INFO_REDUCED >> 825 DEBUG_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ >> 826 $(call cc-option,-fno-var-tracking) 871 endif 827 endif 872 828 873 # While VLAs have been removed, GCC produces u !! 829 ifdef CONFIG_DEBUG_INFO_COMPRESSED 874 # for the randomize_kstack_offset feature. Dis !! 830 DEBUG_CFLAGS += -gz=zlib 875 KBUILD_CFLAGS += $(call cc-option, -fno-stac !! 831 KBUILD_AFLAGS += -gz=zlib 876 !! 832 KBUILD_LDFLAGS += --compress-debug-sections=zlib 877 # Clear used registers at func exit (to reduce << 878 ifdef CONFIG_ZERO_CALL_USED_REGS << 879 KBUILD_CFLAGS += -fzero-call-used-regs=used- << 880 endif 833 endif 881 834 >> 835 KBUILD_CFLAGS += $(DEBUG_CFLAGS) >> 836 export DEBUG_CFLAGS >> 837 882 ifdef CONFIG_FUNCTION_TRACER 838 ifdef CONFIG_FUNCTION_TRACER 883 ifdef CONFIG_FTRACE_MCOUNT_USE_CC !! 839 ifdef CONFIG_FTRACE_MCOUNT_RECORD 884 CC_FLAGS_FTRACE += -mrecord-mcount !! 840 # gcc 5 supports generating the mcount tables directly >> 841 ifeq ($(call cc-option-yn,-mrecord-mcount),y) >> 842 CC_FLAGS_FTRACE += -mrecord-mcount >> 843 export CC_USING_RECORD_MCOUNT := 1 >> 844 endif 885 ifdef CONFIG_HAVE_NOP_MCOUNT 845 ifdef CONFIG_HAVE_NOP_MCOUNT 886 ifeq ($(call cc-option-yn, -mnop-mcount),y 846 ifeq ($(call cc-option-yn, -mnop-mcount),y) 887 CC_FLAGS_FTRACE += -mnop-mcount 847 CC_FLAGS_FTRACE += -mnop-mcount 888 CC_FLAGS_USING += -DCC_USING_NOP_MCOU 848 CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 889 endif 849 endif 890 endif 850 endif 891 endif 851 endif 892 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL << 893 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT << 894 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 895 endif << 896 endif << 897 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT << 898 ifdef CONFIG_HAVE_C_RECORDMCOUNT << 899 BUILD_C_RECORDMCOUNT := y << 900 export BUILD_C_RECORDMCOUNT << 901 endif << 902 endif << 903 ifdef CONFIG_HAVE_FENTRY 852 ifdef CONFIG_HAVE_FENTRY 904 # s390-linux-gnu-gcc did not support -mfentr << 905 ifeq ($(call cc-option-yn, -mfentry),y) 853 ifeq ($(call cc-option-yn, -mfentry),y) 906 CC_FLAGS_FTRACE += -mfentry 854 CC_FLAGS_FTRACE += -mfentry 907 CC_FLAGS_USING += -DCC_USING_FENTRY 855 CC_FLAGS_USING += -DCC_USING_FENTRY 908 endif 856 endif 909 endif 857 endif 910 export CC_FLAGS_FTRACE 858 export CC_FLAGS_FTRACE 911 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA 859 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 912 KBUILD_AFLAGS += $(CC_FLAGS_USING) 860 KBUILD_AFLAGS += $(CC_FLAGS_USING) >> 861 ifdef CONFIG_DYNAMIC_FTRACE >> 862 ifdef CONFIG_HAVE_C_RECORDMCOUNT >> 863 BUILD_C_RECORDMCOUNT := y >> 864 export BUILD_C_RECORDMCOUNT >> 865 endif >> 866 endif 913 endif 867 endif 914 868 915 # We trigger additional mismatches with less i 869 # We trigger additional mismatches with less inlining 916 ifdef CONFIG_DEBUG_SECTION_MISMATCH 870 ifdef CONFIG_DEBUG_SECTION_MISMATCH 917 KBUILD_CFLAGS += -fno-inline-functions-called- !! 871 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 918 endif 872 endif 919 873 920 # `rustc`'s `-Zfunction-sections` applies to d << 921 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 874 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 922 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f 875 KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 923 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections << 924 LDFLAGS_vmlinux += --gc-sections 876 LDFLAGS_vmlinux += --gc-sections 925 endif 877 endif 926 878 927 ifdef CONFIG_SHADOW_CALL_STACK 879 ifdef CONFIG_SHADOW_CALL_STACK 928 ifndef CONFIG_DYNAMIC_SCS << 929 CC_FLAGS_SCS := -fsanitize=shadow-call-stac 880 CC_FLAGS_SCS := -fsanitize=shadow-call-stack 930 KBUILD_CFLAGS += $(CC_FLAGS_SCS) 881 KBUILD_CFLAGS += $(CC_FLAGS_SCS) 931 endif << 932 export CC_FLAGS_SCS 882 export CC_FLAGS_SCS 933 endif 883 endif 934 884 935 ifdef CONFIG_LTO_CLANG !! 885 # arch Makefile may override CC so keep this after arch Makefile is included 936 ifdef CONFIG_LTO_CLANG_THIN !! 886 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 937 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit << 938 else << 939 CC_FLAGS_LTO := -flto << 940 endif << 941 CC_FLAGS_LTO += -fvisibility=hidden << 942 887 943 # Limit inlining across translation units to r !! 888 # warn about C99 declaration after statement 944 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 !! 889 KBUILD_CFLAGS += -Wdeclaration-after-statement 945 endif << 946 890 947 ifdef CONFIG_LTO !! 891 # Variable Length Arrays (VLAs) should not be used anywhere in the kernel 948 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) !! 892 KBUILD_CFLAGS += -Wvla 949 KBUILD_AFLAGS += -fno-lto << 950 export CC_FLAGS_LTO << 951 endif << 952 893 953 ifdef CONFIG_CFI_CLANG !! 894 # disable pointer signed / unsigned warnings in gcc 4.0 954 CC_FLAGS_CFI := -fsanitize=kcfi !! 895 KBUILD_CFLAGS += -Wno-pointer-sign 955 KBUILD_CFLAGS += $(CC_FLAGS_CFI) << 956 export CC_FLAGS_CFI << 957 endif << 958 896 959 # Architectures can define flags to add/remove !! 897 # disable stringop warnings in gcc 8+ 960 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN !! 898 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 961 export CC_FLAGS_FPU << 962 export CC_FLAGS_NO_FPU << 963 899 964 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) !! 900 # We'll want to enable this eventually, but it's not going away for 5.7 at least 965 # Set the minimal function alignment. Use the !! 901 KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) 966 # -fmin-function-alignment if it is available, !! 902 KBUILD_CFLAGS += $(call cc-disable-warning, array-bounds) 967 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME !! 903 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) 968 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT << 969 KBUILD_CFLAGS += -fmin-function-alignment=$(CO << 970 else << 971 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU << 972 endif << 973 endif << 974 904 975 # arch Makefile may override CC so keep this a !! 905 # Another good warning that we'll want to enable eventually 976 NOSTDINC_FLAGS += -nostdinc !! 906 KBUILD_CFLAGS += $(call cc-disable-warning, restrict) 977 907 978 # To gain proper coverage for CONFIG_UBSAN_BOU !! 908 # Enabled with W=2, disabled by default as noisy 979 # the kernel uses only C99 flexible arrays for !! 909 KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized) 980 # arrays. Enforce this for everything that may << 981 # perform bounds checking. << 982 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl << 983 << 984 #Currently, disable -Wstringop-overflow for GC << 985 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW << 986 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + << 987 910 988 # disable invalid "can't wrap" optimizations f 911 # disable invalid "can't wrap" optimizations for signed / pointers 989 KBUILD_CFLAGS += -fno-strict-overflow !! 912 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) >> 913 >> 914 # clang sets -fmerge-all-constants by default as optimization, but this >> 915 # is non-conforming behavior for C and in fact breaks the kernel, so we >> 916 # need to disable it here generally. >> 917 KBUILD_CFLAGS += $(call cc-option,-fno-merge-all-constants) >> 918 >> 919 # for gcc -fno-merge-all-constants disables everything, but it is fine >> 920 # to have actual conforming behavior enabled. >> 921 KBUILD_CFLAGS += $(call cc-option,-fmerge-constants) 990 922 991 # Make sure -fstack-check isn't enabled (like 923 # Make sure -fstack-check isn't enabled (like gentoo apparently did) 992 KBUILD_CFLAGS += -fno-stack-check !! 924 KBUILD_CFLAGS += $(call cc-option,-fno-stack-check,) 993 925 994 # conserve stack if available 926 # conserve stack if available 995 ifdef CONFIG_CC_IS_GCC !! 927 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 996 KBUILD_CFLAGS += -fconserve-stack !! 928 997 endif !! 929 # Prohibit date/time macros, which would make the build non-deterministic >> 930 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) >> 931 >> 932 # enforce correct pointer usage >> 933 KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) >> 934 >> 935 # Require designated initializers for all marked structures >> 936 KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 998 937 999 # change __FILE__ to the relative path from th 938 # change __FILE__ to the relative path from the srctree 1000 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p !! 939 KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 1001 940 1002 # include additional Makefiles when needed !! 941 # ensure -fcf-protection is disabled when using retpoline as it is 1003 include-y := scripts/Ma !! 942 # incompatible with -mindirect-branch=thunk-extern 1004 include-$(CONFIG_DEBUG_INFO) += scripts/Ma !! 943 ifdef CONFIG_RETPOLINE 1005 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma !! 944 KBUILD_CFLAGS += $(call cc-option,-fcf-protection=none) 1006 include-$(CONFIG_KASAN) += scripts/Ma !! 945 endif 1007 include-$(CONFIG_KCSAN) += scripts/Ma !! 946 1008 include-$(CONFIG_KMSAN) += scripts/Ma !! 947 include scripts/Makefile.kasan 1009 include-$(CONFIG_UBSAN) += scripts/Ma !! 948 include scripts/Makefile.extrawarn 1010 include-$(CONFIG_KCOV) += scripts/Ma !! 949 include scripts/Makefile.ubsan 1011 include-$(CONFIG_RANDSTRUCT) += scripts/Ma !! 950 include scripts/Makefile.kcsan 1012 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma << 1013 << 1014 include $(addprefix $(srctree)/, $(include-y) << 1015 << 1016 # scripts/Makefile.gcc-plugins is intentional << 1017 # Do not add $(call cc-option,...) below this << 1018 # from the clean source tree, the GCC plugins << 1019 951 1020 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS !! 952 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 1021 KBUILD_CPPFLAGS += $(KCPPFLAGS) 953 KBUILD_CPPFLAGS += $(KCPPFLAGS) 1022 KBUILD_AFLAGS += $(KAFLAGS) 954 KBUILD_AFLAGS += $(KAFLAGS) 1023 KBUILD_CFLAGS += $(KCFLAGS) 955 KBUILD_CFLAGS += $(KCFLAGS) 1024 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) << 1025 956 1026 KBUILD_LDFLAGS_MODULE += --build-id=sha1 !! 957 KBUILD_LDFLAGS_MODULE += --build-id 1027 LDFLAGS_vmlinux += --build-id=sha1 !! 958 LDFLAGS_vmlinux += --build-id 1028 << 1029 KBUILD_LDFLAGS += -z noexecstack << 1030 ifeq ($(CONFIG_LD_IS_BFD),y) << 1031 KBUILD_LDFLAGS += $(call ld-option,--no-warn << 1032 endif << 1033 959 1034 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 960 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1035 LDFLAGS_vmlinux += -X !! 961 LDFLAGS_vmlinux += $(call ld-option, -X,) 1036 endif 962 endif 1037 963 1038 ifeq ($(CONFIG_RELR),y) 964 ifeq ($(CONFIG_RELR),y) 1039 # ld.lld before 15 did not support -z pack-re !! 965 LDFLAGS_vmlinux += --pack-dyn-relocs=relr 1040 LDFLAGS_vmlinux += $(call ld-option,--pack-dy << 1041 endif << 1042 << 1043 # We never want expected sections to be place << 1044 # linker. All sections should be explicitly n << 1045 ifdef CONFIG_LD_ORPHAN_WARN << 1046 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG << 1047 endif 966 endif 1048 967 1049 # Align the bit size of userspace programs wi 968 # Align the bit size of userspace programs with the kernel 1050 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta 969 KBUILD_USERCFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 1051 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta 970 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 1052 971 1053 # make the checker run with the right archite 972 # make the checker run with the right architecture 1054 CHECKFLAGS += --arch=$(ARCH) 973 CHECKFLAGS += --arch=$(ARCH) 1055 974 1056 # insure the checker run with the right endia 975 # insure the checker run with the right endianness 1057 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- 976 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 1058 977 1059 # the checker needs the correct machine size 978 # the checker needs the correct machine size 1060 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 979 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1061 980 1062 # Default kernel image to build when no speci 981 # Default kernel image to build when no specific target is given. 1063 # KBUILD_IMAGE may be overruled on the comman 982 # KBUILD_IMAGE may be overruled on the command line or 1064 # set in the environment 983 # set in the environment 1065 # Also any assignments in arch/$(ARCH)/Makefi 984 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 1066 # this default value 985 # this default value 1067 export KBUILD_IMAGE ?= vmlinux 986 export KBUILD_IMAGE ?= vmlinux 1068 987 1069 # 988 # 1070 # INSTALL_PATH specifies where to place the u 989 # INSTALL_PATH specifies where to place the updated kernel and system map 1071 # images. Default is /boot, but you can set i 990 # images. Default is /boot, but you can set it to other values 1072 export INSTALL_PATH ?= /boot 991 export INSTALL_PATH ?= /boot 1073 992 1074 # 993 # 1075 # INSTALL_DTBS_PATH specifies a prefix for re 994 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1076 # Like INSTALL_MOD_PATH, it isn't defined in 995 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1077 # an argument if needed. Otherwise it default 996 # an argument if needed. Otherwise it defaults to the kernel install path 1078 # 997 # 1079 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d 998 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1080 999 1081 # 1000 # 1082 # INSTALL_MOD_PATH specifies a prefix to MODL 1001 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1083 # relocations required by build roots. This 1002 # relocations required by build roots. This is not defined in the 1084 # makefile but the argument can be passed to 1003 # makefile but the argument can be passed to make if needed. 1085 # 1004 # 1086 1005 1087 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 1006 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1088 export MODLIB 1007 export MODLIB 1089 1008 >> 1009 # >> 1010 # INSTALL_MOD_STRIP, if defined, will cause modules to be >> 1011 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then >> 1012 # the default option --strip-debug will be used. Otherwise, >> 1013 # INSTALL_MOD_STRIP value will be used as the options to the strip command. >> 1014 >> 1015 ifdef INSTALL_MOD_STRIP >> 1016 ifeq ($(INSTALL_MOD_STRIP),1) >> 1017 mod_strip_cmd = $(STRIP) --strip-debug >> 1018 else >> 1019 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) >> 1020 endif # INSTALL_MOD_STRIP=1 >> 1021 else >> 1022 mod_strip_cmd = true >> 1023 endif # INSTALL_MOD_STRIP >> 1024 export mod_strip_cmd >> 1025 >> 1026 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed >> 1027 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP >> 1028 # or CONFIG_MODULE_COMPRESS_XZ. >> 1029 >> 1030 mod_compress_cmd = true >> 1031 ifdef CONFIG_MODULE_COMPRESS >> 1032 ifdef CONFIG_MODULE_COMPRESS_GZIP >> 1033 mod_compress_cmd = $(KGZIP) -n -f >> 1034 endif # CONFIG_MODULE_COMPRESS_GZIP >> 1035 ifdef CONFIG_MODULE_COMPRESS_XZ >> 1036 mod_compress_cmd = $(XZ) -f >> 1037 endif # CONFIG_MODULE_COMPRESS_XZ >> 1038 endif # CONFIG_MODULE_COMPRESS >> 1039 export mod_compress_cmd >> 1040 >> 1041 ifdef CONFIG_MODULE_SIG_ALL >> 1042 $(eval $(call config_filename,MODULE_SIG_KEY)) >> 1043 >> 1044 mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 >> 1045 else >> 1046 mod_sign_cmd = true >> 1047 endif >> 1048 export mod_sign_cmd >> 1049 >> 1050 HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf) >> 1051 >> 1052 ifdef CONFIG_STACK_VALIDATION >> 1053 has_libelf := $(call try-run,\ >> 1054 echo "int main() {}" | $(HOSTCC) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0) >> 1055 ifeq ($(has_libelf),1) >> 1056 objtool_target := tools/objtool FORCE >> 1057 else >> 1058 SKIP_STACK_VALIDATION := 1 >> 1059 export SKIP_STACK_VALIDATION >> 1060 endif >> 1061 endif >> 1062 1090 PHONY += prepare0 1063 PHONY += prepare0 1091 1064 1092 export extmod_prefix = $(if $(KBUILD_EXTMOD), !! 1065 export MODORDER := $(extmod-prefix)modules.order 1093 export MODORDER := $(extmod_prefix)modules.or !! 1066 export MODULES_NSDEPS := $(extmod-prefix)modules.nsdeps 1094 export MODULES_NSDEPS := $(extmod_prefix)modu << 1095 1067 1096 ifeq ($(KBUILD_EXTMOD),) 1068 ifeq ($(KBUILD_EXTMOD),) >> 1069 core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ >> 1070 >> 1071 vmlinux-dirs := $(patsubst %/,%,$(filter %/, \ >> 1072 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ >> 1073 $(libs-y) $(libs-m))) 1097 1074 1098 build-dir := . !! 1075 vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \ 1099 clean-dirs := $(sort . Documentation \ << 1100 $(patsubst %/,%,$(filter 1076 $(patsubst %/,%,$(filter %/, $(core-) \ 1101 $(drivers-) $(libs-)) 1077 $(drivers-) $(libs-)))) 1102 1078 1103 export ARCH_CORE := $(core-y) !! 1079 subdir-modorder := $(addsuffix modules.order,$(filter %/, \ 1104 export ARCH_LIB := $(filter %/, $(lib !! 1080 $(core-y) $(core-m) $(libs-y) $(libs-m) \ 1105 export ARCH_DRIVERS := $(drivers-y) $(dri !! 1081 $(drivers-y) $(drivers-m))) 1106 # Externally visible symbols (used by link-vm << 1107 1082 1108 KBUILD_VMLINUX_OBJS := ./built-in.a !! 1083 build-dirs := $(vmlinux-dirs) >> 1084 clean-dirs := $(vmlinux-alldirs) >> 1085 >> 1086 # Externally visible symbols (used by link-vmlinux.sh) >> 1087 KBUILD_VMLINUX_OBJS := $(head-y) $(patsubst %/,%/built-in.a, $(core-y)) >> 1088 KBUILD_VMLINUX_OBJS += $(addsuffix built-in.a, $(filter %/, $(libs-y))) 1109 ifdef CONFIG_MODULES 1089 ifdef CONFIG_MODULES 1110 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a 1090 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y))) 1111 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib 1091 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y)) 1112 else 1092 else 1113 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, 1093 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y)) 1114 endif 1094 endif >> 1095 KBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y)) 1115 1096 1116 export KBUILD_VMLINUX_LIBS !! 1097 export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS 1117 export KBUILD_LDS := arch/$(SRCARCH) 1098 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds >> 1099 export LDFLAGS_vmlinux >> 1100 # used by scripts/Makefile.package >> 1101 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools) >> 1102 >> 1103 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) 1118 1104 >> 1105 # Recurse until adjust_autoksyms.sh is satisfied >> 1106 PHONY += autoksyms_recursive 1119 ifdef CONFIG_TRIM_UNUSED_KSYMS 1107 ifdef CONFIG_TRIM_UNUSED_KSYMS 1120 # For the kernel to actually contain only the 1108 # For the kernel to actually contain only the needed exported symbols, 1121 # we have to build modules as well to determi 1109 # we have to build modules as well to determine what those symbols are. >> 1110 # (this can be evaluated only once include/config/auto.conf has been included) 1122 KBUILD_MODULES := 1 1111 KBUILD_MODULES := 1 >> 1112 >> 1113 autoksyms_recursive: descend modules.order >> 1114 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ >> 1115 "$(MAKE) -f $(srctree)/Makefile vmlinux" 1123 endif 1116 endif 1124 1117 1125 # '$(AR) mPi' needs 'T' to workaround the bug !! 1118 autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) 1126 quiet_cmd_ar_vmlinux.a = AR $@ << 1127 cmd_ar_vmlinux.a = \ << 1128 rm -f $@; \ << 1129 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS << 1130 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) << 1131 << 1132 targets += vmlinux.a << 1133 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea << 1134 $(call if_changed,ar_vmlinux.a) << 1135 << 1136 PHONY += vmlinux_o << 1137 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) << 1138 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1139 1119 1140 vmlinux.o modules.builtin.modinfo modules.bui !! 1120 quiet_cmd_autoksyms_h = GEN $@ 1141 @: !! 1121 cmd_autoksyms_h = mkdir -p $(dir $@); \ >> 1122 $(CONFIG_SHELL) $(srctree)/scripts/gen_autoksyms.sh $@ >> 1123 >> 1124 $(autoksyms_h): >> 1125 $(call cmd,autoksyms_h) 1142 1126 1143 PHONY += vmlinux !! 1127 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) 1144 # LDFLAGS_vmlinux in the top Makefile defines !! 1128 1145 # not for decompressors. LDFLAGS_vmlinux in a !! 1129 # Final link of vmlinux with optional arch pass after final link 1146 # unrelated; the decompressors just happen to !! 1130 cmd_link-vmlinux = \ 1147 # arch/*/boot/compressed/vmlinux. !! 1131 $(CONFIG_SHELL) $< $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_vmlinux) ; \ 1148 # Export LDFLAGS_vmlinux only to scripts/Make !! 1132 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1149 # !! 1133 1150 # _LDFLAGS_vmlinux is a workaround for the 'p !! 1134 vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE 1151 # https://savannah.gnu.org/bugs/?61463 !! 1135 +$(call if_changed,link-vmlinux) 1152 # For Make > 4.4, the following simple code w !! 1136 1153 # vmlinux: private export LDFLAGS_vmlinux := !! 1137 targets := vmlinux 1154 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG << 1155 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ << 1156 vmlinux: vmlinux.o $(KBUILD_LDS) modpost << 1157 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1158 1138 1159 # The actual objects are generated when desce 1139 # The actual objects are generated when descending, 1160 # make sure no implicit rule kicks in 1140 # make sure no implicit rule kicks in 1161 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 1141 $(sort $(vmlinux-deps) $(subdir-modorder)): descend ; 1162 1142 1163 ifeq ($(origin KERNELRELEASE),file) !! 1143 filechk_kernel.release = \ 1164 filechk_kernel.release = $(srctree)/scripts/s !! 1144 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1165 else << 1166 filechk_kernel.release = echo $(KERNELRELEASE << 1167 endif << 1168 1145 1169 # Store (new) KERNELRELEASE string in include 1146 # Store (new) KERNELRELEASE string in include/config/kernel.release 1170 include/config/kernel.release: FORCE 1147 include/config/kernel.release: FORCE 1171 $(call filechk,kernel.release) 1148 $(call filechk,kernel.release) 1172 1149 1173 # Additional helpers built in scripts/ 1150 # Additional helpers built in scripts/ 1174 # Carefully list dependencies so we do not tr 1151 # Carefully list dependencies so we do not try to build scripts twice 1175 # in parallel 1152 # in parallel 1176 PHONY += scripts 1153 PHONY += scripts 1177 scripts: scripts_basic scripts_dtc 1154 scripts: scripts_basic scripts_dtc 1178 $(Q)$(MAKE) $(build)=$(@) 1155 $(Q)$(MAKE) $(build)=$(@) 1179 1156 1180 # Things we need to do before we recursively 1157 # Things we need to do before we recursively start building the kernel 1181 # or the modules are listed in "prepare". 1158 # or the modules are listed in "prepare". 1182 # A multi level approach is used. prepareN is 1159 # A multi level approach is used. prepareN is processed before prepareN-1. 1183 # archprepare is used in arch Makefiles and w 1160 # archprepare is used in arch Makefiles and when processed asm symlink, 1184 # version.h and scripts_basic is processed / 1161 # version.h and scripts_basic is processed / created. 1185 1162 1186 PHONY += prepare archprepare 1163 PHONY += prepare archprepare 1187 1164 1188 archprepare: outputmakefile archheaders archs 1165 archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \ 1189 asm-generic $(version_h) include/gene !! 1166 asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h \ 1190 include/generated/compile.h include/g !! 1167 include/generated/autoconf.h 1191 1168 1192 prepare0: archprepare 1169 prepare0: archprepare 1193 $(Q)$(MAKE) $(build)=scripts/mod 1170 $(Q)$(MAKE) $(build)=scripts/mod 1194 $(Q)$(MAKE) $(build)=. prepare !! 1171 $(Q)$(MAKE) $(build)=. 1195 1172 1196 # All the preparing.. 1173 # All the preparing.. 1197 prepare: prepare0 !! 1174 prepare: prepare0 prepare-objtool 1198 ifdef CONFIG_RUST << 1199 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1200 $(Q)$(MAKE) $(build)=rust << 1201 endif << 1202 << 1203 PHONY += remove-stale-files << 1204 remove-stale-files: << 1205 $(Q)$(srctree)/scripts/remove-stale-f << 1206 1175 1207 # Support for using generic headers in asm-ge 1176 # Support for using generic headers in asm-generic 1208 asm-generic := -f $(srctree)/scripts/Makefile !! 1177 asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj 1209 1178 1210 PHONY += asm-generic uapi-asm-generic 1179 PHONY += asm-generic uapi-asm-generic 1211 asm-generic: uapi-asm-generic 1180 asm-generic: uapi-asm-generic 1212 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1181 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \ 1213 generic=include/asm-generic 1182 generic=include/asm-generic 1214 uapi-asm-generic: 1183 uapi-asm-generic: 1215 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1184 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \ 1216 generic=include/uapi/asm-generic 1185 generic=include/uapi/asm-generic 1217 1186 >> 1187 PHONY += prepare-objtool >> 1188 prepare-objtool: $(objtool_target) >> 1189 ifeq ($(SKIP_STACK_VALIDATION),1) >> 1190 ifdef CONFIG_UNWINDER_ORC >> 1191 @echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1192 @false >> 1193 else >> 1194 @echo "warning: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1195 endif >> 1196 endif >> 1197 1218 # Generate some files 1198 # Generate some files 1219 # ------------------------------------------- 1199 # --------------------------------------------------------------------------- 1220 1200 1221 # KERNELRELEASE can change from a few differe 1201 # KERNELRELEASE can change from a few different places, meaning version.h 1222 # needs to be updated, so this check is force 1202 # needs to be updated, so this check is forced on all builds 1223 1203 1224 uts_len := 64 1204 uts_len := 64 1225 define filechk_utsrelease.h 1205 define filechk_utsrelease.h 1226 if [ `echo -n "$(KERNELRELEASE)" | wc 1206 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1227 echo '"$(KERNELRELEASE)" exceeds $( 1207 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1228 exit 1; 1208 exit 1; \ 1229 fi; 1209 fi; \ 1230 echo \#define UTS_RELEASE \"$(KERNELR 1210 echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" 1231 endef 1211 endef 1232 1212 1233 define filechk_version.h 1213 define filechk_version.h 1234 if [ $(SUBLEVEL) -gt 255 ]; then !! 1214 echo \#define LINUX_VERSION_CODE $(shell \ 1235 echo \#define LINUX_VERSION_C !! 1215 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1236 expr $(VERSION) \* 65536 + $( !! 1216 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))' 1237 else << 1238 echo \#define LINUX_VERSION_C << 1239 expr $(VERSION) \* 65536 + $( << 1240 fi; << 1241 echo '#define KERNEL_VERSION(a,b,c) ( << 1242 ((c) > 255 ? 255 : (c)))'; << 1243 echo \#define LINUX_VERSION_MAJOR $(V << 1244 echo \#define LINUX_VERSION_PATCHLEVE << 1245 echo \#define LINUX_VERSION_SUBLEVEL << 1246 endef 1217 endef 1247 1218 1248 $(version_h): private PATCHLEVEL := $(or $(PA << 1249 $(version_h): private SUBLEVEL := $(or $(SUBL << 1250 $(version_h): FORCE 1219 $(version_h): FORCE 1251 $(call filechk,version.h) 1220 $(call filechk,version.h) >> 1221 $(Q)rm -f $(old_version_h) 1252 1222 1253 include/generated/utsrelease.h: include/confi 1223 include/generated/utsrelease.h: include/config/kernel.release FORCE 1254 $(call filechk,utsrelease.h) 1224 $(call filechk,utsrelease.h) 1255 1225 1256 filechk_compile.h = $(srctree)/scripts/mkcomp << 1257 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION << 1258 << 1259 include/generated/compile.h: FORCE << 1260 $(call filechk,compile.h) << 1261 << 1262 PHONY += headerdep 1226 PHONY += headerdep 1263 headerdep: 1227 headerdep: 1264 $(Q)find $(srctree)/include/ -name '* 1228 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1265 $(srctree)/scripts/headerdep.pl -I$(s 1229 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1266 1230 1267 # ------------------------------------------- 1231 # --------------------------------------------------------------------------- 1268 # Kernel headers 1232 # Kernel headers 1269 1233 1270 #Default location for installed headers 1234 #Default location for installed headers 1271 export INSTALL_HDR_PATH = $(objtree)/usr 1235 export INSTALL_HDR_PATH = $(objtree)/usr 1272 1236 1273 quiet_cmd_headers_install = INSTALL $(INSTALL 1237 quiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include 1274 cmd_headers_install = \ 1238 cmd_headers_install = \ 1275 mkdir -p $(INSTALL_HDR_PATH); \ 1239 mkdir -p $(INSTALL_HDR_PATH); \ 1276 rsync -mrl --include='*/' --include=' 1240 rsync -mrl --include='*/' --include='*\.h' --exclude='*' \ 1277 usr/include $(INSTALL_HDR_PATH) 1241 usr/include $(INSTALL_HDR_PATH) 1278 1242 1279 PHONY += headers_install 1243 PHONY += headers_install 1280 headers_install: headers 1244 headers_install: headers 1281 $(call cmd,headers_install) 1245 $(call cmd,headers_install) 1282 1246 1283 PHONY += archheaders archscripts 1247 PHONY += archheaders archscripts 1284 1248 1285 hdr-inst := -f $(srctree)/scripts/Makefile.he 1249 hdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj 1286 1250 1287 PHONY += headers 1251 PHONY += headers 1288 headers: $(version_h) scripts_unifdef uapi-as 1252 headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts 1289 $(if $(filter um, $(SRCARCH)), $(erro !! 1253 $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ >> 1254 $(error Headers not exportable for the $(SRCARCH) architecture)) 1290 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1255 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1291 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC 1256 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi 1292 1257 >> 1258 # Deprecated. It is no-op now. >> 1259 PHONY += headers_check >> 1260 headers_check: >> 1261 @: >> 1262 1293 ifdef CONFIG_HEADERS_INSTALL 1263 ifdef CONFIG_HEADERS_INSTALL 1294 prepare: headers 1264 prepare: headers 1295 endif 1265 endif 1296 1266 1297 PHONY += scripts_unifdef 1267 PHONY += scripts_unifdef 1298 scripts_unifdef: scripts_basic 1268 scripts_unifdef: scripts_basic 1299 $(Q)$(MAKE) $(build)=scripts scripts/ 1269 $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1300 1270 1301 # ------------------------------------------- 1271 # --------------------------------------------------------------------------- 1302 # Install << 1303 << 1304 # Many distributions have the custom install << 1305 # If DKMS is installed, 'make install' will e << 1306 # to this Makefile to build and install exter << 1307 # Cancel sub_make_done so that options such a << 1308 << 1309 quiet_cmd_install = INSTALL $(INSTALL_PATH) << 1310 cmd_install = unset sub_make_done; $(sr << 1311 << 1312 # ------------------------------------------- << 1313 # vDSO install << 1314 << 1315 PHONY += vdso_install << 1316 vdso_install: export INSTALL_FILES = $(vdso-i << 1317 vdso_install: << 1318 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1319 << 1320 # ------------------------------------------- << 1321 # Tools << 1322 << 1323 ifdef CONFIG_OBJTOOL << 1324 prepare: tools/objtool << 1325 endif << 1326 << 1327 ifdef CONFIG_BPF << 1328 ifdef CONFIG_DEBUG_INFO_BTF << 1329 prepare: tools/bpf/resolve_btfids << 1330 endif << 1331 endif << 1332 << 1333 # The tools build system is not a part of Kbu << 1334 # its own unique issues. If you need to integ << 1335 # please consider locating that tool outside << 1336 # standard Kbuild "hostprogs" syntax instead << 1337 # here. See Documentation/kbuild/makefiles.rs << 1338 << 1339 PHONY += resolve_btfids_clean << 1340 << 1341 resolve_btfids_O = $(abspath $(objtree))/tool << 1342 << 1343 # tools/bpf/resolve_btfids directory might no << 1344 # in output directory, skip its clean in that << 1345 resolve_btfids_clean: << 1346 ifneq ($(wildcard $(resolve_btfids_O)),) << 1347 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ << 1348 endif << 1349 << 1350 # Clear a bunch of variables before executing << 1351 ifeq ($(quiet),silent_) << 1352 tools_silent=s << 1353 endif << 1354 << 1355 tools/: FORCE << 1356 $(Q)mkdir -p $(objtree)/tools << 1357 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1358 << 1359 tools/%: FORCE << 1360 $(Q)mkdir -p $(objtree)/tools << 1361 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1362 << 1363 # ------------------------------------------- << 1364 # Kernel selftest 1272 # Kernel selftest 1365 1273 1366 PHONY += kselftest 1274 PHONY += kselftest 1367 kselftest: headers !! 1275 kselftest: 1368 $(Q)$(MAKE) -C $(srctree)/tools/testi 1276 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 1369 1277 1370 kselftest-%: headers FORCE !! 1278 kselftest-%: FORCE 1371 $(Q)$(MAKE) -C $(srctree)/tools/testi 1279 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $* 1372 1280 1373 PHONY += kselftest-merge 1281 PHONY += kselftest-merge 1374 kselftest-merge: 1282 kselftest-merge: 1375 $(if $(wildcard $(objtree)/.config),, 1283 $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1376 $(Q)find $(srctree)/tools/testing/sel !! 1284 $(Q)find $(srctree)/tools/testing/selftests -name config | \ 1377 xargs $(srctree)/scripts/kcon !! 1285 xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config 1378 $(Q)$(MAKE) -f $(srctree)/Makefile ol 1286 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1379 1287 1380 # ------------------------------------------- 1288 # --------------------------------------------------------------------------- 1381 # Devicetree files 1289 # Devicetree files 1382 1290 1383 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ 1291 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 1384 dtstree := arch/$(SRCARCH)/boot/dts 1292 dtstree := arch/$(SRCARCH)/boot/dts 1385 endif 1293 endif 1386 1294 1387 ifneq ($(dtstree),) 1295 ifneq ($(dtstree),) 1388 1296 1389 %.dtb: dtbs_prepare !! 1297 %.dtb: include/config/kernel.release scripts_dtc 1390 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1391 << 1392 %.dtbo: dtbs_prepare << 1393 $(Q)$(MAKE) $(build)=$(dtstree) $(dts 1298 $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1394 1299 1395 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ !! 1300 PHONY += dtbs dtbs_install dtbs_check 1396 dtbs: dtbs_prepare !! 1301 dtbs: include/config/kernel.release scripts_dtc 1397 $(Q)$(MAKE) $(build)=$(dtstree) need- !! 1302 $(Q)$(MAKE) $(build)=$(dtstree) 1398 << 1399 # include/config/kernel.release is actually n << 1400 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) << 1401 # dtbs_install depend on it as dtbs_install m << 1402 dtbs_prepare: include/config/kernel.release s << 1403 1303 1404 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), 1304 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),) 1405 export CHECK_DTBS=y 1305 export CHECK_DTBS=y 1406 endif !! 1306 dtbs: dt_binding_check 1407 << 1408 ifneq ($(CHECK_DTBS),) << 1409 dtbs_prepare: dt_binding_schemas << 1410 endif 1307 endif 1411 1308 1412 dtbs_check: dtbs 1309 dtbs_check: dtbs 1413 1310 1414 dtbs_install: 1311 dtbs_install: 1415 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1312 $(Q)$(MAKE) $(dtbinst)=$(dtstree) dst=$(INSTALL_DTBS_PATH) 1416 1313 1417 ifdef CONFIG_OF_EARLY_FLATTREE 1314 ifdef CONFIG_OF_EARLY_FLATTREE 1418 all: dtbs 1315 all: dtbs 1419 endif 1316 endif 1420 1317 1421 endif 1318 endif 1422 1319 1423 PHONY += scripts_dtc 1320 PHONY += scripts_dtc 1424 scripts_dtc: scripts_basic 1321 scripts_dtc: scripts_basic 1425 $(Q)$(MAKE) $(build)=scripts/dtc 1322 $(Q)$(MAKE) $(build)=scripts/dtc 1426 1323 1427 ifneq ($(filter dt_binding_check, $(MAKECMDGO 1324 ifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),) 1428 export CHECK_DTBS=y !! 1325 export CHECK_DT_BINDING=y 1429 endif 1326 endif 1430 1327 1431 PHONY += dt_binding_check dt_binding_schemas !! 1328 PHONY += dt_binding_check 1432 dt_binding_check: dt_binding_schemas scripts_ !! 1329 dt_binding_check: scripts_dtc 1433 $(Q)$(MAKE) $(build)=Documentation/de << 1434 << 1435 dt_binding_schemas: << 1436 $(Q)$(MAKE) $(build)=Documentation/de 1330 $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings 1437 1331 1438 PHONY += dt_compatible_check << 1439 dt_compatible_check: dt_binding_schemas << 1440 $(Q)$(MAKE) $(build)=Documentation/de << 1441 << 1442 # ------------------------------------------- 1332 # --------------------------------------------------------------------------- 1443 # Modules 1333 # Modules 1444 1334 1445 ifdef CONFIG_MODULES 1335 ifdef CONFIG_MODULES 1446 1336 1447 # By default, build modules as well 1337 # By default, build modules as well 1448 1338 1449 all: modules 1339 all: modules 1450 1340 1451 # When we're building modules with modversion 1341 # When we're building modules with modversions, we need to consider 1452 # the built-in objects during the descend as 1342 # the built-in objects during the descend as well, in order to 1453 # make sure the checksums are up to date befo 1343 # make sure the checksums are up to date before we record them. 1454 ifdef CONFIG_MODVERSIONS 1344 ifdef CONFIG_MODVERSIONS 1455 KBUILD_BUILTIN := 1 1345 KBUILD_BUILTIN := 1 1456 endif 1346 endif 1457 1347 1458 # Build modules 1348 # Build modules 1459 # 1349 # >> 1350 # A module can be listed more than once in obj-m resulting in >> 1351 # duplicate lines in modules.order files. Those are removed >> 1352 # using awk while concatenating to the final file. 1460 1353 1461 # *.ko are usually independent of vmlinux, bu !! 1354 PHONY += modules 1462 # is an exception. !! 1355 modules: $(if $(KBUILD_BUILTIN),vmlinux) modules_check 1463 ifdef CONFIG_DEBUG_INFO_BTF_MODULES !! 1356 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1464 KBUILD_BUILTIN := 1 !! 1357 1465 modules: vmlinux !! 1358 PHONY += modules_check 1466 endif !! 1359 modules_check: modules.order >> 1360 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $< >> 1361 >> 1362 cmd_modules_order = $(AWK) '!x[$$0]++' $(real-prereqs) > $@ 1467 1363 1468 modules: modules_prepare !! 1364 modules.order: $(subdir-modorder) FORCE >> 1365 $(call if_changed,modules_order) >> 1366 >> 1367 targets += modules.order 1469 1368 1470 # Target to prepare building external modules 1369 # Target to prepare building external modules >> 1370 PHONY += modules_prepare 1471 modules_prepare: prepare 1371 modules_prepare: prepare 1472 $(Q)$(MAKE) $(build)=scripts scripts/ !! 1372 >> 1373 # Target to install modules >> 1374 PHONY += modules_install >> 1375 modules_install: _modinst_ _modinst_post >> 1376 >> 1377 PHONY += _modinst_ >> 1378 _modinst_: >> 1379 @rm -rf $(MODLIB)/kernel >> 1380 @rm -f $(MODLIB)/source >> 1381 @mkdir -p $(MODLIB)/kernel >> 1382 @ln -s $(abspath $(srctree)) $(MODLIB)/source >> 1383 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ >> 1384 rm -f $(MODLIB)/build ; \ >> 1385 ln -s $(CURDIR) $(MODLIB)/build ; \ >> 1386 fi >> 1387 @sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order >> 1388 @cp -f modules.builtin $(MODLIB)/ >> 1389 @cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/ >> 1390 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1391 >> 1392 # This depmod is only for convenience to give the initial >> 1393 # boot a modules.dep even before / is mounted read-write. However the >> 1394 # boot script depmod is the master version. >> 1395 PHONY += _modinst_post >> 1396 _modinst_post: _modinst_ >> 1397 $(call cmd,depmod) >> 1398 >> 1399 ifeq ($(CONFIG_MODULE_SIG), y) >> 1400 PHONY += modules_sign >> 1401 modules_sign: >> 1402 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign >> 1403 endif >> 1404 >> 1405 else # CONFIG_MODULES >> 1406 >> 1407 # Modules not configured >> 1408 # --------------------------------------------------------------------------- >> 1409 >> 1410 PHONY += modules modules_install >> 1411 modules modules_install: >> 1412 @echo >&2 >> 1413 @echo >&2 "The present kernel configuration has modules disabled." >> 1414 @echo >&2 "Type 'make config' and enable loadable module support." >> 1415 @echo >&2 "Then build a kernel with module support enabled." >> 1416 @echo >&2 >> 1417 @exit 1 1473 1418 1474 endif # CONFIG_MODULES 1419 endif # CONFIG_MODULES 1475 1420 1476 ### 1421 ### 1477 # Cleaning is done on three levels. 1422 # Cleaning is done on three levels. 1478 # make clean Delete most generated files 1423 # make clean Delete most generated files 1479 # Leave enough to build extern 1424 # Leave enough to build external modules 1480 # make mrproper Delete the current configura 1425 # make mrproper Delete the current configuration, and all generated files 1481 # make distclean Remove editor backup files, 1426 # make distclean Remove editor backup files, patch leftover files and the like 1482 1427 1483 # Directories & files removed with 'make clea 1428 # Directories & files removed with 'make clean' 1484 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1429 CLEAN_FILES += include/ksym vmlinux.symvers \ 1485 modules.builtin modules.builti !! 1430 modules.builtin modules.builtin.modinfo modules.nsdeps 1486 compile_commands.json rust/tes << 1487 rust-project.json .vmlinux.obj << 1488 1431 1489 # Directories & files removed with 'make mrpr 1432 # Directories & files removed with 'make mrproper' 1490 MRPROPER_FILES += include/config include/gene 1433 MRPROPER_FILES += include/config include/generated \ 1491 arch/$(SRCARCH)/include/gen !! 1434 arch/$(SRCARCH)/include/generated .tmp_objdiff \ 1492 debian snap tar-install PKG !! 1435 debian snap tar-install \ 1493 .config .config.old .versio 1436 .config .config.old .version \ 1494 Module.symvers \ 1437 Module.symvers \ 1495 certs/signing_key.pem \ !! 1438 signing_key.pem signing_key.priv signing_key.x509 \ 1496 certs/x509.genkey \ !! 1439 x509.genkey extra_certificates signing_key.x509.keyid \ 1497 vmlinux-gdb.py \ !! 1440 signing_key.x509.signer vmlinux-gdb.py \ 1498 rpmbuild \ !! 1441 *.spec 1499 rust/libmacros.so !! 1442 >> 1443 # Directories & files removed with 'make distclean' >> 1444 DISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS 1500 1445 1501 # clean - Delete most, but leave enough to bu 1446 # clean - Delete most, but leave enough to build external modules 1502 # 1447 # 1503 clean: private rm-files := $(CLEAN_FILES) !! 1448 clean: rm-files := $(CLEAN_FILES) 1504 1449 1505 PHONY += archclean vmlinuxclean 1450 PHONY += archclean vmlinuxclean 1506 1451 1507 vmlinuxclean: 1452 vmlinuxclean: 1508 $(Q)$(CONFIG_SHELL) $(srctree)/script 1453 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1509 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f 1454 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1510 1455 1511 clean: archclean vmlinuxclean resolve_btfids_ !! 1456 clean: archclean vmlinuxclean 1512 1457 1513 # mrproper - Delete all generated files, incl 1458 # mrproper - Delete all generated files, including .config 1514 # 1459 # 1515 mrproper: private rm-files := $(MRPROPER_FILE !! 1460 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1516 mrproper-dirs := $(addprefix _mrproper_, 1461 mrproper-dirs := $(addprefix _mrproper_,scripts) 1517 1462 1518 PHONY += $(mrproper-dirs) mrproper 1463 PHONY += $(mrproper-dirs) mrproper 1519 $(mrproper-dirs): 1464 $(mrproper-dirs): 1520 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1465 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1521 1466 1522 mrproper: clean $(mrproper-dirs) 1467 mrproper: clean $(mrproper-dirs) 1523 $(call cmd,rmfiles) 1468 $(call cmd,rmfiles) 1524 @find . $(RCS_FIND_IGNORE) \ << 1525 \( -name '*.rmeta' \) \ << 1526 -type f -print | xargs rm -f << 1527 1469 1528 # distclean 1470 # distclean 1529 # 1471 # >> 1472 distclean: rm-files := $(wildcard $(DISTCLEAN_FILES)) >> 1473 1530 PHONY += distclean 1474 PHONY += distclean 1531 1475 1532 distclean: mrproper 1476 distclean: mrproper 1533 @find . $(RCS_FIND_IGNORE) \ !! 1477 $(call cmd,rmfiles) >> 1478 @find $(srctree) $(RCS_FIND_IGNORE) \ 1534 \( -name '*.orig' -o -name '* 1479 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1535 -o -name '*.bak' -o -name '#* 1480 -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1536 -o -name 'core' -o -name tags !! 1481 -o -name 'core' \) \ 1537 -o -name GPATH -o -name GRTAG << 1538 -type f -print | xargs rm -f 1482 -type f -print | xargs rm -f 1539 1483 1540 1484 1541 # Packaging of the kernel to various formats 1485 # Packaging of the kernel to various formats 1542 # ------------------------------------------- 1486 # --------------------------------------------------------------------------- 1543 1487 1544 %src-pkg: FORCE 1488 %src-pkg: FORCE 1545 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1489 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1546 %pkg: include/config/kernel.release FORCE 1490 %pkg: include/config/kernel.release FORCE 1547 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1491 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1548 1492 1549 # Brief documentation of the typical targets 1493 # Brief documentation of the typical targets used 1550 # ------------------------------------------- 1494 # --------------------------------------------------------------------------- 1551 1495 1552 boards := $(wildcard $(srctree)/arch/$(SRCARC 1496 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1553 boards := $(sort $(notdir $(boards))) 1497 boards := $(sort $(notdir $(boards))) 1554 board-dirs := $(dir $(wildcard $(srctree)/arc 1498 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1555 board-dirs := $(sort $(notdir $(board-dirs:/= 1499 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1556 1500 1557 PHONY += help 1501 PHONY += help 1558 help: 1502 help: 1559 @echo 'Cleaning targets:' 1503 @echo 'Cleaning targets:' 1560 @echo ' clean - Remove mo 1504 @echo ' clean - Remove most generated files but keep the config and' 1561 @echo ' enough bu 1505 @echo ' enough build support to build external modules' 1562 @echo ' mrproper - Remove al 1506 @echo ' mrproper - Remove all generated files + config + various backup files' 1563 @echo ' distclean - mrproper 1507 @echo ' distclean - mrproper + remove editor backup and patch files' 1564 @echo '' 1508 @echo '' >> 1509 @echo 'Configuration targets:' 1565 @$(MAKE) -f $(srctree)/scripts/kconfi 1510 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1566 @echo '' 1511 @echo '' 1567 @echo 'Other generic targets:' 1512 @echo 'Other generic targets:' 1568 @echo ' all - Build all 1513 @echo ' all - Build all targets marked with [*]' 1569 @echo '* vmlinux - Build the 1514 @echo '* vmlinux - Build the bare kernel' 1570 @echo '* modules - Build all 1515 @echo '* modules - Build all modules' 1571 @echo ' modules_install - Install a 1516 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1572 @echo ' vdso_install - Install u << 1573 @echo ' dir/ - Build all 1517 @echo ' dir/ - Build all files in dir and below' 1574 @echo ' dir/file.[ois] - Build spe 1518 @echo ' dir/file.[ois] - Build specified target only' 1575 @echo ' dir/file.ll - Build the 1519 @echo ' dir/file.ll - Build the LLVM assembly file' 1576 @echo ' (requires 1520 @echo ' (requires compiler support for LLVM assembly generation)' 1577 @echo ' dir/file.lst - Build spe 1521 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1578 @echo ' (requires 1522 @echo ' (requires a recent binutils and recent build (System.map))' 1579 @echo ' dir/file.ko - Build mod 1523 @echo ' dir/file.ko - Build module including final link' 1580 @echo ' modules_prepare - Set up fo 1524 @echo ' modules_prepare - Set up for building external modules' 1581 @echo ' tags/TAGS - Generate 1525 @echo ' tags/TAGS - Generate tags file for editors' 1582 @echo ' cscope - Generate 1526 @echo ' cscope - Generate cscope index' 1583 @echo ' gtags - Generate 1527 @echo ' gtags - Generate GNU GLOBAL index' 1584 @echo ' kernelrelease - Output th 1528 @echo ' kernelrelease - Output the release version string (use with make -s)' 1585 @echo ' kernelversion - Output th 1529 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1586 @echo ' image_name - Output th 1530 @echo ' image_name - Output the image name (use with make -s)' 1587 @echo ' headers_install - Install s 1531 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1588 echo ' (default: 1532 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1589 echo '' 1533 echo '' 1590 @echo 'Static analysers:' 1534 @echo 'Static analysers:' 1591 @echo ' checkstack - Generate !! 1535 @echo ' checkstack - Generate a list of stack hogs' 1592 @echo ' with a st !! 1536 @echo ' namespacecheck - Name space analysis on compiled kernel' 1593 @echo ' versioncheck - Sanity ch 1537 @echo ' versioncheck - Sanity check on version.h usage' 1594 @echo ' includecheck - Check for 1538 @echo ' includecheck - Check for duplicate included header files' 1595 @echo ' export_report - List the 1539 @echo ' export_report - List the usages of all exported symbols' 1596 @echo ' headerdep - Detect in 1540 @echo ' headerdep - Detect inclusion cycles in headers' 1597 @echo ' coccicheck - Check wit 1541 @echo ' coccicheck - Check with Coccinelle' 1598 @echo ' clang-analyzer - Check wit << 1599 @echo ' clang-tidy - Check wit << 1600 @echo '' 1542 @echo '' 1601 @echo 'Tools:' 1543 @echo 'Tools:' 1602 @echo ' nsdeps - Generate 1544 @echo ' nsdeps - Generate missing symbol namespace dependencies' 1603 @echo '' 1545 @echo '' 1604 @echo 'Kernel selftest:' 1546 @echo 'Kernel selftest:' 1605 @echo ' kselftest - Build a 1547 @echo ' kselftest - Build and run kernel selftest' 1606 @echo ' Build, 1548 @echo ' Build, install, and boot kernel before' 1607 @echo ' running 1549 @echo ' running kselftest on it' 1608 @echo ' Run as 1550 @echo ' Run as root for full coverage' 1609 @echo ' kselftest-all - Build k 1551 @echo ' kselftest-all - Build kernel selftest' 1610 @echo ' kselftest-install - Build a 1552 @echo ' kselftest-install - Build and install kernel selftest' 1611 @echo ' kselftest-clean - Remove 1553 @echo ' kselftest-clean - Remove all generated kselftest files' 1612 @echo ' kselftest-merge - Merge a 1554 @echo ' kselftest-merge - Merge all the config dependencies of' 1613 @echo ' kselfte 1555 @echo ' kselftest to existing .config.' 1614 @echo '' 1556 @echo '' 1615 @echo 'Rust targets:' << 1616 @echo ' rustavailable - Checks wh << 1617 @echo ' available << 1618 @echo ' rustfmt - Reformat << 1619 @echo ' rustfmtcheck - Checks if << 1620 @echo ' is format << 1621 @echo ' rustdoc - Generate << 1622 @echo ' (requires << 1623 @echo ' rusttest - Runs the << 1624 @echo ' (requires << 1625 @echo ' rust-analyzer - Generate << 1626 @echo ' (requires << 1627 @echo ' dir/file.[os] - Build spe << 1628 @echo ' dir/file.rsi - Build mac << 1629 @echo ' Run with << 1630 @echo ' The outpu << 1631 @echo ' dir/file.ll - Build the << 1632 @echo '' << 1633 @$(if $(dtstree), \ 1557 @$(if $(dtstree), \ 1634 echo 'Devicetree:'; \ 1558 echo 'Devicetree:'; \ 1635 echo '* dtbs - !! 1559 echo '* dtbs - Build device tree blobs for enabled boards'; \ 1636 echo ' dtbs_install - !! 1560 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ 1637 echo ' dt_binding_check - !! 1561 echo ' dt_binding_check - Validate device tree binding documents'; \ 1638 echo ' dt_binding_schema - !! 1562 echo ' dtbs_check - Validate device tree source files';\ 1639 echo ' dtbs_check - << 1640 echo '') 1563 echo '') 1641 1564 1642 @echo 'Userspace tools targets:' 1565 @echo 'Userspace tools targets:' 1643 @echo ' use "make tools/help"' 1566 @echo ' use "make tools/help"' 1644 @echo ' or "cd tools; make help"' 1567 @echo ' or "cd tools; make help"' 1645 @echo '' 1568 @echo '' 1646 @echo 'Kernel packaging:' 1569 @echo 'Kernel packaging:' 1647 @$(MAKE) -f $(srctree)/scripts/Makefi 1570 @$(MAKE) -f $(srctree)/scripts/Makefile.package help 1648 @echo '' 1571 @echo '' 1649 @echo 'Documentation targets:' 1572 @echo 'Documentation targets:' 1650 @$(MAKE) -f $(srctree)/Documentation/ 1573 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1651 @echo '' 1574 @echo '' 1652 @echo 'Architecture-specific targets !! 1575 @echo 'Architecture specific targets ($(SRCARCH)):' 1653 @$(or $(archhelp),\ !! 1576 @$(if $(archhelp),$(archhelp),\ 1654 echo ' No architecture-speci !! 1577 echo ' No architecture specific help defined for $(SRCARCH)') 1655 @echo '' 1578 @echo '' 1656 @$(if $(boards), \ 1579 @$(if $(boards), \ 1657 $(foreach b, $(boards), \ 1580 $(foreach b, $(boards), \ 1658 printf " %-27s - Build for % 1581 printf " %-27s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1659 echo '') 1582 echo '') 1660 @$(if $(board-dirs), \ 1583 @$(if $(board-dirs), \ 1661 $(foreach b, $(board-dirs), \ 1584 $(foreach b, $(board-dirs), \ 1662 printf " %-16s - Show %s-spe 1585 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1663 printf " %-16s - Show all of 1586 printf " %-16s - Show all of the above\\n" help-boards; \ 1664 echo '') 1587 echo '') 1665 1588 1666 @echo ' make V=n [targets] 1: ver !! 1589 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1667 @echo ' 2: giv !! 1590 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1668 @echo ' V=1 an << 1669 @echo ' make O=dir [targets] Locate 1591 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1670 @echo ' make C=1 [targets] Check 1592 @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK' 1671 @echo ' (spars 1593 @echo ' (sparse by default)' 1672 @echo ' make C=2 [targets] Force 1594 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1673 @echo ' make RECORDMCOUNT_WARN=1 [t 1595 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1674 @echo ' make W=n [targets] Enable !! 1596 @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where' 1675 @echo ' 1: warnings w 1597 @echo ' 1: warnings which may be relevant and do not occur too often' 1676 @echo ' 2: warnings w 1598 @echo ' 2: warnings which occur quite often but may still be relevant' 1677 @echo ' 3: more obscu 1599 @echo ' 3: more obscure warnings, can most likely be ignored' 1678 @echo ' c: extra chec << 1679 @echo ' e: warnings a << 1680 @echo ' Multiple leve 1600 @echo ' Multiple levels can be combined with W=12 or W=123' 1681 @$(if $(dtstree), \ << 1682 echo ' make CHECK_DTBS=1 [ta << 1683 echo ' This can be ap << 1684 ) << 1685 @echo '' 1601 @echo '' 1686 @echo 'Execute "make" or "make all" 1602 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1687 @echo 'For further info see the ./RE 1603 @echo 'For further info see the ./README file' 1688 1604 1689 1605 1690 help-board-dirs := $(addprefix help-,$(board- 1606 help-board-dirs := $(addprefix help-,$(board-dirs)) 1691 1607 1692 help-boards: $(help-board-dirs) 1608 help-boards: $(help-board-dirs) 1693 1609 1694 boards-per-dir = $(sort $(notdir $(wildcard $ 1610 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1695 1611 1696 $(help-board-dirs): help-%: 1612 $(help-board-dirs): help-%: 1697 @echo 'Architecture-specific targets !! 1613 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1698 @$(if $(boards-per-dir), \ 1614 @$(if $(boards-per-dir), \ 1699 $(foreach b, $(boards-per-dir 1615 $(foreach b, $(boards-per-dir), \ 1700 printf " %-24s - Build for % 1616 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1701 echo '') 1617 echo '') 1702 1618 1703 1619 1704 # Documentation targets 1620 # Documentation targets 1705 # ------------------------------------------- 1621 # --------------------------------------------------------------------------- 1706 DOC_TARGETS := xmldocs latexdocs pdfdocs html 1622 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1707 linkcheckdocs dochelp refcheck !! 1623 linkcheckdocs dochelp refcheckdocs 1708 PHONY += $(DOC_TARGETS) 1624 PHONY += $(DOC_TARGETS) 1709 $(DOC_TARGETS): 1625 $(DOC_TARGETS): 1710 $(Q)$(MAKE) $(build)=Documentation $@ 1626 $(Q)$(MAKE) $(build)=Documentation $@ 1711 1627 1712 << 1713 # Rust targets << 1714 # ------------------------------------------- << 1715 << 1716 # "Is Rust available?" target << 1717 PHONY += rustavailable << 1718 rustavailable: << 1719 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1720 << 1721 # Documentation target << 1722 # << 1723 # Using the singular to avoid running afoul o << 1724 PHONY += rustdoc << 1725 rustdoc: prepare << 1726 $(Q)$(MAKE) $(build)=rust $@ << 1727 << 1728 # Testing target << 1729 PHONY += rusttest << 1730 rusttest: prepare << 1731 $(Q)$(MAKE) $(build)=rust $@ << 1732 << 1733 # Formatting targets << 1734 PHONY += rustfmt rustfmtcheck << 1735 << 1736 # We skip `rust/alloc` since we want to minim << 1737 # << 1738 # We match using absolute paths since `find` << 1739 # when matching, which is a problem when e.g. << 1740 # We `grep` afterwards in order to remove the << 1741 rustfmt: << 1742 $(Q)find $(abs_srctree) -type f -name << 1743 -o -path $(abs_srctree)/rust/ << 1744 -o -path $(abs_objtree)/rust/ << 1745 | grep -Fv $(abs_srctree)/rus << 1746 | grep -Fv $(abs_objtree)/rus << 1747 | grep -Fv generated \ << 1748 | xargs $(RUSTFMT) $(rustfmt_ << 1749 << 1750 rustfmtcheck: rustfmt_flags = --check << 1751 rustfmtcheck: rustfmt << 1752 << 1753 # Misc 1628 # Misc 1754 # ------------------------------------------- 1629 # --------------------------------------------------------------------------- 1755 1630 1756 PHONY += misc-check << 1757 misc-check: << 1758 $(Q)$(srctree)/scripts/misc-check << 1759 << 1760 all: misc-check << 1761 << 1762 PHONY += scripts_gdb 1631 PHONY += scripts_gdb 1763 scripts_gdb: prepare0 1632 scripts_gdb: prepare0 1764 $(Q)$(MAKE) $(build)=scripts/gdb 1633 $(Q)$(MAKE) $(build)=scripts/gdb 1765 $(Q)ln -fsn $(abspath $(srctree)/scri 1634 $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) 1766 1635 1767 ifdef CONFIG_GDB_SCRIPTS 1636 ifdef CONFIG_GDB_SCRIPTS 1768 all: scripts_gdb 1637 all: scripts_gdb 1769 endif 1638 endif 1770 1639 1771 else # KBUILD_EXTMOD 1640 else # KBUILD_EXTMOD 1772 1641 1773 filechk_kernel.release = echo $(KERNELRELEASE << 1774 << 1775 ### 1642 ### 1776 # External module support. 1643 # External module support. 1777 # When building external modules the kernel u 1644 # When building external modules the kernel used as basis is considered 1778 # read-only, and no consistency checks are ma 1645 # read-only, and no consistency checks are made and the make 1779 # system is not used on the basis kernel. If 1646 # system is not used on the basis kernel. If updates are required 1780 # in the basis kernel ordinary make commands !! 1647 # in the basis kernel ordinary make commands (without M=...) must >> 1648 # be used. >> 1649 # >> 1650 # The following are the only valid targets when building external >> 1651 # modules. >> 1652 # make M=dir clean Delete all automatically generated files >> 1653 # make M=dir modules Make all modules in specified dir >> 1654 # make M=dir Same as 'make M=dir modules' >> 1655 # make M=dir modules_install >> 1656 # Install the modules built in the module directory >> 1657 # Assumes install directory is already created 1781 1658 1782 # We are always building only modules. !! 1659 # We are always building modules 1783 KBUILD_BUILTIN := << 1784 KBUILD_MODULES := 1 1660 KBUILD_MODULES := 1 1785 1661 1786 build-dir := $(KBUILD_EXTMOD) !! 1662 build-dirs := $(KBUILD_EXTMOD) >> 1663 PHONY += modules >> 1664 modules: descend >> 1665 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1787 1666 1788 compile_commands.json: $(extmod_prefix)compil !! 1667 PHONY += modules_install 1789 PHONY += compile_commands.json !! 1668 modules_install: _emodinst_ _emodinst_post 1790 1669 1791 clean-dirs := $(KBUILD_EXTMOD) !! 1670 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1792 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1671 PHONY += _emodinst_ 1793 $(KBUILD_EXTMOD)/compile_commands.jso !! 1672 _emodinst_: >> 1673 $(Q)mkdir -p $(MODLIB)/$(install-dir) >> 1674 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1675 >> 1676 PHONY += _emodinst_post >> 1677 _emodinst_post: _emodinst_ >> 1678 $(call cmd,depmod) 1794 1679 1795 PHONY += prepare !! 1680 clean-dirs := $(KBUILD_EXTMOD) 1796 # now expand this into a simple variable to r !! 1681 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps 1797 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT << 1798 prepare: << 1799 @if [ "$(CC_VERSION_TEXT)" != "$(CONF << 1800 echo >&2 "warning: the compil << 1801 echo >&2 " The kernel was bu << 1802 echo >&2 " You are using: << 1803 fi << 1804 1682 1805 PHONY += help 1683 PHONY += help 1806 help: 1684 help: 1807 @echo ' Building external modules.' 1685 @echo ' Building external modules.' 1808 @echo ' Syntax: make -C path/to/ker 1686 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1809 @echo '' 1687 @echo '' 1810 @echo ' modules - default t 1688 @echo ' modules - default target, build the module(s)' 1811 @echo ' modules_install - install t 1689 @echo ' modules_install - install the module' 1812 @echo ' clean - remove ge 1690 @echo ' clean - remove generated files in module directory only' 1813 @echo ' rust-analyzer - generate << 1814 @echo '' 1691 @echo '' 1815 1692 1816 ifndef CONFIG_MODULES !! 1693 PHONY += prepare 1817 modules modules_install: __external_modules_e << 1818 __external_modules_error: << 1819 @echo >&2 '***' << 1820 @echo >&2 '*** The present kernel dis << 1821 @echo >&2 '*** You cannot build or in << 1822 @echo >&2 '***' << 1823 @false << 1824 endif << 1825 << 1826 endif # KBUILD_EXTMOD 1694 endif # KBUILD_EXTMOD 1827 1695 1828 # ------------------------------------------- << 1829 # Modules << 1830 << 1831 PHONY += modules modules_install modules_sign << 1832 << 1833 modules_install: << 1834 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1835 sign-only=$(if $(filter modules_insta << 1836 << 1837 ifeq ($(CONFIG_MODULE_SIG),y) << 1838 # modules_sign is a subset of modules_install << 1839 # 'make modules_install modules_sign' is equi << 1840 modules_sign: modules_install << 1841 @: << 1842 else << 1843 modules_sign: << 1844 @echo >&2 '***' << 1845 @echo >&2 '*** CONFIG_MODULE_SIG is d << 1846 @echo >&2 '***' << 1847 @false << 1848 endif << 1849 << 1850 ifdef CONFIG_MODULES << 1851 << 1852 $(MODORDER): $(build-dir) << 1853 @: << 1854 << 1855 # KBUILD_MODPOST_NOFINAL can be set to skip t << 1856 # This is solely useful to speed up test comp << 1857 modules: modpost << 1858 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1859 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1860 endif << 1861 << 1862 PHONY += modules_check << 1863 modules_check: $(MODORDER) << 1864 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1865 << 1866 else # CONFIG_MODULES << 1867 << 1868 modules: << 1869 @: << 1870 << 1871 KBUILD_MODULES := << 1872 << 1873 endif # CONFIG_MODULES << 1874 << 1875 PHONY += modpost << 1876 modpost: $(if $(single-build),, $(if $(KBUILD << 1877 $(if $(KBUILD_MODULES), modules_chec << 1878 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1879 << 1880 # Single targets 1696 # Single targets 1881 # ------------------------------------------- 1697 # --------------------------------------------------------------------------- 1882 # To build individual files in subdirectories 1698 # To build individual files in subdirectories, you can do like this: 1883 # 1699 # 1884 # make foo/bar/baz.s 1700 # make foo/bar/baz.s 1885 # 1701 # 1886 # The supported suffixes for single-target ar 1702 # The supported suffixes for single-target are listed in 'single-targets' 1887 # 1703 # 1888 # To build only under specific subdirectories 1704 # To build only under specific subdirectories, you can do like this: 1889 # 1705 # 1890 # make foo/bar/baz/ 1706 # make foo/bar/baz/ 1891 1707 1892 ifdef single-build 1708 ifdef single-build 1893 1709 1894 # .ko is special because modpost is needed 1710 # .ko is special because modpost is needed 1895 single-ko := $(sort $(filter %.ko, $(MAKECMDG 1711 single-ko := $(sort $(filter %.ko, $(MAKECMDGOALS))) 1896 single-no-ko := $(filter-out $(single-ko), $( !! 1712 single-no-ko := $(sort $(patsubst %.ko,%.mod, $(MAKECMDGOALS))) 1897 $(foreach x, o mod, $(patsubs << 1898 1713 1899 $(single-ko): single_modules !! 1714 $(single-ko): single_modpost 1900 @: 1715 @: 1901 $(single-no-ko): $(build-dir) !! 1716 $(single-no-ko): descend 1902 @: 1717 @: 1903 1718 1904 # Remove MODORDER when done because it is not !! 1719 ifeq ($(KBUILD_EXTMOD),) 1905 PHONY += single_modules !! 1720 # For the single build of in-tree modules, use a temporary file to avoid 1906 single_modules: $(single-no-ko) modules_prepa !! 1721 # the situation of modules_install installing an invalid modules.order. 1907 $(Q){ $(foreach m, $(single-ko), echo !! 1722 MODORDER := .modules.tmp 1908 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1909 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1910 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1911 endif 1723 endif 1912 $(Q)rm -f $(MODORDER) << 1913 1724 1914 single-goals := $(addprefix $(build-dir)/, $( !! 1725 PHONY += single_modpost >> 1726 single_modpost: $(single-no-ko) >> 1727 $(Q){ $(foreach m, $(single-ko), echo $(extmod-prefix)$m;) } > $(MODORDER) >> 1728 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1915 1729 1916 KBUILD_MODULES := 1 1730 KBUILD_MODULES := 1 1917 1731 >> 1732 export KBUILD_SINGLE_TARGETS := $(addprefix $(extmod-prefix), $(single-no-ko)) >> 1733 >> 1734 # trim unrelated directories >> 1735 build-dirs := $(foreach d, $(build-dirs), \ >> 1736 $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d))) >> 1737 >> 1738 endif >> 1739 >> 1740 ifndef CONFIG_MODULES >> 1741 KBUILD_MODULES := 1918 endif 1742 endif 1919 1743 >> 1744 # Handle descending into subdirectories listed in $(build-dirs) 1920 # Preset locale variables to speed up the bui 1745 # Preset locale variables to speed up the build process. Limit locale 1921 # tweaks to this spot to avoid wrong language 1746 # tweaks to this spot to avoid wrong language settings when running 1922 # make menuconfig etc. 1747 # make menuconfig etc. 1923 # Error messages still appears in the origina 1748 # Error messages still appears in the original language 1924 PHONY += $(build-dir) !! 1749 PHONY += descend $(build-dirs) 1925 $(build-dir): prepare !! 1750 descend: $(build-dirs) 1926 $(Q)$(MAKE) $(build)=$@ need-builtin= !! 1751 $(build-dirs): prepare >> 1752 $(Q)$(MAKE) $(build)=$@ \ >> 1753 single-build=$(if $(filter-out $@/, $(filter $@/%, $(KBUILD_SINGLE_TARGETS))),1) \ >> 1754 need-builtin=1 need-modorder=1 1927 1755 1928 clean-dirs := $(addprefix _clean_, $(clean-di 1756 clean-dirs := $(addprefix _clean_, $(clean-dirs)) 1929 PHONY += $(clean-dirs) clean 1757 PHONY += $(clean-dirs) clean 1930 $(clean-dirs): 1758 $(clean-dirs): 1931 $(Q)$(MAKE) $(clean)=$(patsubst _clea 1759 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1932 1760 1933 clean: $(clean-dirs) 1761 clean: $(clean-dirs) 1934 $(call cmd,rmfiles) 1762 $(call cmd,rmfiles) 1935 @find $(or $(KBUILD_EXTMOD), .) $(RCS !! 1763 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1936 \( -name '*.[aios]' -o -name !! 1764 \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ 1937 -o -name '*.ko.*' \ 1765 -o -name '*.ko.*' \ 1938 -o -name '*.dtb' -o -name '*. !! 1766 -o -name '*.dtb' -o -name '*.dtb.S' -o -name '*.dt.yaml' \ 1939 -o -name '*.dtb.S' -o -name ' << 1940 -o -name '*.dt.yaml' -o -name << 1941 -o -name '*.dwo' -o -name '*. 1767 -o -name '*.dwo' -o -name '*.lst' \ 1942 -o -name '*.su' -o -name '*.m 1768 -o -name '*.su' -o -name '*.mod' \ 1943 -o -name '.*.d' -o -name '.*. 1769 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1944 -o -name '*.lex.c' -o -name ' 1770 -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 1945 -o -name '*.asn1.[ch]' \ 1771 -o -name '*.asn1.[ch]' \ 1946 -o -name '*.symtypes' -o -nam 1772 -o -name '*.symtypes' -o -name 'modules.order' \ >> 1773 -o -name '.tmp_*.o.*' \ 1947 -o -name '*.c.[012]*.*' \ 1774 -o -name '*.c.[012]*.*' \ 1948 -o -name '*.ll' \ 1775 -o -name '*.ll' \ 1949 -o -name '*.gcno' \ !! 1776 -o -name '*.gcno' \) -type f -print | xargs rm -f 1950 -o -name '*.*.symversions' \) << 1951 -o -name '.tmp_*' -print \ << 1952 | xargs rm -rf << 1953 1777 1954 # Generate tags for editors 1778 # Generate tags for editors 1955 # ------------------------------------------- 1779 # --------------------------------------------------------------------------- 1956 quiet_cmd_tags = GEN $@ 1780 quiet_cmd_tags = GEN $@ 1957 cmd_tags = $(BASH) $(srctree)/scripts/t 1781 cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@ 1958 1782 1959 tags TAGS cscope gtags: FORCE 1783 tags TAGS cscope gtags: FORCE 1960 $(call cmd,tags) 1784 $(call cmd,tags) 1961 1785 1962 # Generate rust-project.json (a file that des << 1963 # Rust projects) for rust-analyzer (an implem << 1964 # Protocol). << 1965 PHONY += rust-analyzer << 1966 rust-analyzer: << 1967 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1968 $(Q)$(MAKE) $(build)=rust $@ << 1969 << 1970 # Script to generate missing namespace depend 1786 # Script to generate missing namespace dependencies 1971 # ------------------------------------------- 1787 # --------------------------------------------------------------------------- 1972 1788 1973 PHONY += nsdeps 1789 PHONY += nsdeps 1974 nsdeps: export KBUILD_NSDEPS=1 1790 nsdeps: export KBUILD_NSDEPS=1 1975 nsdeps: modules 1791 nsdeps: modules 1976 $(Q)$(CONFIG_SHELL) $(srctree)/script 1792 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/nsdeps 1977 1793 1978 # Clang Tooling << 1979 # ------------------------------------------- << 1980 << 1981 quiet_cmd_gen_compile_commands = GEN $@ << 1982 cmd_gen_compile_commands = $(PYTHON3) $ << 1983 << 1984 $(extmod_prefix)compile_commands.json: $(srct << 1985 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K << 1986 $(if $(CONFIG_MODULES), $(MODORDER)) << 1987 $(call if_changed,gen_compile_command << 1988 << 1989 targets += $(extmod_prefix)compile_commands.j << 1990 << 1991 PHONY += clang-tidy clang-analyzer << 1992 << 1993 ifdef CONFIG_CC_IS_CLANG << 1994 quiet_cmd_clang_tools = CHECK $< << 1995 cmd_clang_tools = $(PYTHON3) $(srctree) << 1996 << 1997 clang-tidy clang-analyzer: $(extmod_prefix)co << 1998 $(call cmd,clang_tools) << 1999 else << 2000 clang-tidy clang-analyzer: << 2001 @echo "$@ requires CC=clang" >&2 << 2002 @false << 2003 endif << 2004 << 2005 # Scripts to check various things for consist 1794 # Scripts to check various things for consistency 2006 # ------------------------------------------- 1795 # --------------------------------------------------------------------------- 2007 1796 2008 PHONY += includecheck versioncheck coccicheck !! 1797 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 2009 1798 2010 includecheck: 1799 includecheck: 2011 find $(srctree)/* $(RCS_FIND_IGNORE) 1800 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2012 -name '*.[hcS]' -type f -prin 1801 -name '*.[hcS]' -type f -print | sort \ 2013 | xargs $(PERL) -w $(srctree) 1802 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 2014 1803 2015 versioncheck: 1804 versioncheck: 2016 find $(srctree)/* $(RCS_FIND_IGNORE) 1805 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2017 -name '*.[hcS]' -type f -prin 1806 -name '*.[hcS]' -type f -print | sort \ 2018 | xargs $(PERL) -w $(srctree) 1807 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 2019 1808 2020 coccicheck: 1809 coccicheck: 2021 $(Q)$(BASH) $(srctree)/scripts/$@ 1810 $(Q)$(BASH) $(srctree)/scripts/$@ 2022 1811 >> 1812 namespacecheck: >> 1813 $(PERL) $(srctree)/scripts/namespace.pl >> 1814 2023 export_report: 1815 export_report: 2024 $(PERL) $(srctree)/scripts/export_rep 1816 $(PERL) $(srctree)/scripts/export_report.pl 2025 1817 2026 PHONY += checkstack kernelrelease kernelversi 1818 PHONY += checkstack kernelrelease kernelversion image_name 2027 1819 2028 # UML needs a little special treatment here. 1820 # UML needs a little special treatment here. It wants to use the host 2029 # toolchain, so needs $(SUBARCH) passed to ch 1821 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 2030 # else wants $(ARCH), including people doing 1822 # else wants $(ARCH), including people doing cross-builds, which means 2031 # that $(SUBARCH) doesn't work here. 1823 # that $(SUBARCH) doesn't work here. 2032 ifeq ($(ARCH), um) 1824 ifeq ($(ARCH), um) 2033 CHECKSTACK_ARCH := $(SUBARCH) 1825 CHECKSTACK_ARCH := $(SUBARCH) 2034 else 1826 else 2035 CHECKSTACK_ARCH := $(ARCH) 1827 CHECKSTACK_ARCH := $(ARCH) 2036 endif 1828 endif 2037 MINSTACKSIZE ?= 100 << 2038 checkstack: 1829 checkstack: 2039 $(OBJDUMP) -d vmlinux $$(find . -name 1830 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 2040 $(PERL) $(srctree)/scripts/checkstack !! 1831 $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 2041 1832 2042 kernelrelease: 1833 kernelrelease: 2043 @$(filechk_kernel.release) !! 1834 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 2044 1835 2045 kernelversion: 1836 kernelversion: 2046 @echo $(KERNELVERSION) 1837 @echo $(KERNELVERSION) 2047 1838 2048 image_name: 1839 image_name: 2049 @echo $(KBUILD_IMAGE) 1840 @echo $(KBUILD_IMAGE) 2050 1841 2051 PHONY += run-command !! 1842 # Clear a bunch of variables before executing the submake 2052 run-command: !! 1843 2053 $(Q)$(KBUILD_RUN_COMMAND) !! 1844 ifeq ($(quiet),silent_) >> 1845 tools_silent=s >> 1846 endif >> 1847 >> 1848 tools/: FORCE >> 1849 $(Q)mkdir -p $(objtree)/tools >> 1850 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ >> 1851 >> 1852 tools/%: FORCE >> 1853 $(Q)mkdir -p $(objtree)/tools >> 1854 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ $* 2054 1855 2055 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 1856 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2056 cmd_rmfiles = rm -rf $(rm-files) 1857 cmd_rmfiles = rm -rf $(rm-files) >> 1858 >> 1859 # Run depmod only if we have System.map and depmod is executable >> 1860 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) >> 1861 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ >> 1862 $(KERNELRELEASE) 2057 1863 2058 # read saved command lines for existing targe 1864 # read saved command lines for existing targets 2059 existing-targets := $(wildcard $(sort $(targe 1865 existing-targets := $(wildcard $(sort $(targets))) 2060 1866 2061 -include $(foreach f,$(existing-targets),$(di 1867 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 2062 1868 2063 endif # config-build 1869 endif # config-build 2064 endif # mixed-build 1870 endif # mixed-build 2065 endif # need-sub-make 1871 endif # need-sub-make 2066 1872 2067 PHONY += FORCE 1873 PHONY += FORCE 2068 FORCE: 1874 FORCE: 2069 1875 2070 # Declare the contents of the PHONY variable 1876 # Declare the contents of the PHONY variable as phony. We keep that 2071 # information in a variable so we can use it 1877 # information in a variable so we can use it in if_changed and friends. 2072 .PHONY: $(PHONY) 1878 .PHONY: $(PHONY)
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