1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0 2 VERSION = 6 !! 2 VERSION = 5 3 PATCHLEVEL = 12 !! 3 PATCHLEVEL = 4 4 SUBLEVEL = 0 !! 4 SUBLEVEL = 285 5 EXTRAVERSION = -rc7 !! 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)), \ << 19 $(error targets prefixed with '__' are << 20 << 21 # That's our default target when none is given 14 # That's our default target when none is given on the command line 22 PHONY := __all !! 15 PHONY := _all 23 __all: !! 16 _all: 24 17 25 # We are using a recursive build, so we need t 18 # We are using a recursive build, so we need to do a little thinking 26 # to get the ordering right. 19 # to get the ordering right. 27 # 20 # 28 # Most importantly: sub-Makefiles should only 21 # Most importantly: sub-Makefiles should only ever modify files in 29 # their own directory. If in some directory we 22 # their own directory. If in some directory we have a dependency on 30 # a file in another dir (which doesn't happen 23 # a file in another dir (which doesn't happen often, but it's often 31 # unavoidable when linking the built-in.a targ 24 # unavoidable when linking the built-in.a targets which finally 32 # turn into vmlinux), we will call a sub make 25 # turn into vmlinux), we will call a sub make in that other dir, and 33 # after that we are sure that everything which 26 # after that we are sure that everything which is in that other dir 34 # is now up to date. 27 # is now up to date. 35 # 28 # 36 # The only cases where we need to modify files 29 # The only cases where we need to modify files which have global 37 # effects are thus separated out and done befo 30 # effects are thus separated out and done before the recursive 38 # descending is started. They are now explicit 31 # descending is started. They are now explicitly listed as the 39 # prepare rule. 32 # prepare rule. 40 33 41 this-makefile := $(lastword $(MAKEFILE_LIST)) << 42 abs_srctree := $(realpath $(dir $(this-makefil << 43 abs_objtree := $(CURDIR) << 44 << 45 ifneq ($(sub_make_done),1) 34 ifneq ($(sub_make_done),1) 46 35 47 # Do not use make's built-in rules and variabl 36 # Do not use make's built-in rules and variables 48 # (this increases performance and avoids hard- 37 # (this increases performance and avoids hard-to-debug behaviour) 49 MAKEFLAGS += -rR 38 MAKEFLAGS += -rR 50 39 51 # Avoid funny character set dependencies 40 # Avoid funny character set dependencies 52 unexport LC_ALL 41 unexport LC_ALL 53 LC_COLLATE=C 42 LC_COLLATE=C 54 LC_NUMERIC=C 43 LC_NUMERIC=C 55 export LC_COLLATE LC_NUMERIC 44 export LC_COLLATE LC_NUMERIC 56 45 57 # Avoid interference with shell env settings 46 # Avoid interference with shell env settings 58 unexport GREP_OPTIONS 47 unexport GREP_OPTIONS 59 48 60 # Beautify output 49 # Beautify output 61 # -------------------------------------------- 50 # --------------------------------------------------------------------------- 62 # 51 # 63 # Most of build commands in Kbuild start with !! 52 # Normally, we echo the whole command before executing it. By making 64 # "quiet_cmd_*". If defined, the short log is !! 53 # that echo $($(quiet)$(cmd)), we now have the possibility to set 65 # that command is printed by default. !! 54 # $(quiet) to choose other forms of output instead, e.g. 66 # !! 55 # 67 # e.g.) !! 56 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 68 # quiet_cmd_depmod = DEPMOD $(MODLIB) !! 57 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 69 # cmd_depmod = $(srctree)/scripts/dep !! 58 # >> 59 # If $(quiet) is empty, the whole command will be printed. >> 60 # If it is set to "quiet_", only the short version will be printed. >> 61 # If it is set to "silent_", nothing will be printed at all, since >> 62 # the variable $(silent_cmd_cc_o_c) doesn't exist. 70 # 63 # 71 # A simple variant is to prefix commands with 64 # A simple variant is to prefix commands with $(Q) - that's useful 72 # for commands that shall be hidden in non-ver 65 # for commands that shall be hidden in non-verbose mode. 73 # 66 # 74 # $(Q)$(MAKE) $(build)=scripts/basic !! 67 # $(Q)ln $@ :< 75 # 68 # 76 # If KBUILD_VERBOSE contains 1, the whole comm !! 69 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 77 # If KBUILD_VERBOSE contains 2, the reason for !! 70 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 78 # 71 # 79 # To put more focus on warnings, be less verbo 72 # To put more focus on warnings, be less verbose as default 80 # Use 'make V=1' to see the full commands 73 # Use 'make V=1' to see the full commands 81 74 82 ifeq ("$(origin V)", "command line") 75 ifeq ("$(origin V)", "command line") 83 KBUILD_VERBOSE = $(V) 76 KBUILD_VERBOSE = $(V) 84 endif 77 endif >> 78 ifndef KBUILD_VERBOSE >> 79 KBUILD_VERBOSE = 0 >> 80 endif 85 81 86 quiet = quiet_ !! 82 ifeq ($(KBUILD_VERBOSE),1) 87 Q = @ << 88 << 89 ifneq ($(findstring 1, $(KBUILD_VERBOSE)),) << 90 quiet = 83 quiet = 91 Q = 84 Q = >> 85 else >> 86 quiet=quiet_ >> 87 Q = @ 92 endif 88 endif 93 89 94 # If the user is running make -s (silent mode) 90 # If the user is running make -s (silent mode), suppress echoing of 95 # commands 91 # commands 96 ifneq ($(findstring s,$(firstword -$(MAKEFLAGS !! 92 # make-4.0 (and later) keep single letter options in the 1st word of MAKEFLAGS. 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 = $(C) << 115 endif << 116 ifndef KBUILD_CHECKSRC << 117 KBUILD_CHECKSRC = 0 << 118 endif << 119 93 120 export KBUILD_CHECKSRC !! 94 ifeq ($(filter 3.%,$(MAKE_VERSION)),) 121 !! 95 silence:=$(findstring s,$(firstword -$(MAKEFLAGS))) 122 # Enable "clippy" (a linter) as part of the Ru !! 96 else 123 # !! 97 silence:=$(findstring s,$(filter-out --%,$(MAKEFLAGS))) 124 # Use 'make CLIPPY=1' to enable it. << 125 ifeq ("$(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 $(KBUILD_EXTM << 146 endif 98 endif 147 99 148 export KBUILD_EXTMOD !! 100 ifeq ($(silence),s) 149 !! 101 quiet=silent_ 150 # backward compatibility << 151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC << 152 << 153 ifeq ("$(origin W)", "command line") << 154 KBUILD_EXTRA_WARN := $(W) << 155 endif 102 endif 156 103 157 export KBUILD_EXTRA_WARN !! 104 export quiet Q KBUILD_VERBOSE 158 105 159 # Kbuild will save output files in the current 106 # Kbuild will save output files in the current working directory. 160 # This does not need to match to the root of t 107 # This does not need to match to the root of the kernel source tree. 161 # 108 # 162 # For example, you can do this: 109 # For example, you can do this: 163 # 110 # 164 # cd /dir/to/store/output/files; make -f /dir 111 # cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile 165 # 112 # 166 # If you want to save output files in a differ 113 # If you want to save output files in a different location, there are 167 # two syntaxes to specify it. 114 # two syntaxes to specify it. 168 # 115 # 169 # 1) O= 116 # 1) O= 170 # Use "make O=dir/to/store/output/files/" 117 # Use "make O=dir/to/store/output/files/" 171 # 118 # 172 # 2) Set KBUILD_OUTPUT 119 # 2) Set KBUILD_OUTPUT 173 # Set the environment variable KBUILD_OUTPUT t 120 # Set the environment variable KBUILD_OUTPUT to point to the output directory. 174 # export KBUILD_OUTPUT=dir/to/store/output/fil 121 # export KBUILD_OUTPUT=dir/to/store/output/files/; make 175 # 122 # 176 # The O= assignment takes precedence over the 123 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 177 # variable. 124 # variable. 178 125 179 # Do we want to change the working directory? 126 # Do we want to change the working directory? 180 ifeq ("$(origin O)", "command line") 127 ifeq ("$(origin O)", "command line") 181 KBUILD_OUTPUT := $(O) 128 KBUILD_OUTPUT := $(O) 182 endif 129 endif 183 130 184 ifneq ($(KBUILD_OUTPUT),) 131 ifneq ($(KBUILD_OUTPUT),) 185 # $(realpath ...) gets empty if the path does !! 132 # Make's built-in functions such as $(abspath ...), $(realpath ...) cannot 186 $(shell mkdir -p "$(KBUILD_OUTPUT)") !! 133 # expand a shell special character '~'. We use a somewhat tedious way here. >> 134 abs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) >> 135 $(if $(abs_objtree),, \ >> 136 $(error failed to create output directory "$(KBUILD_OUTPUT)")) >> 137 187 # $(realpath ...) resolves symlinks 138 # $(realpath ...) resolves symlinks 188 abs_objtree := $(realpath $(KBUILD_OUTPUT)) !! 139 abs_objtree := $(realpath $(abs_objtree)) 189 $(if $(abs_objtree),,$(error failed to create !! 140 else >> 141 abs_objtree := $(CURDIR) 190 endif # ifneq ($(KBUILD_OUTPUT),) 142 endif # ifneq ($(KBUILD_OUTPUT),) 191 143 192 ifneq ($(words $(subst :, ,$(abs_srctree))), 1 !! 144 ifeq ($(abs_objtree),$(CURDIR)) 193 $(error source directory cannot contain spaces !! 145 # Suppress "Entering directory ..." unless we are changing the work directory. >> 146 MAKEFLAGS += --no-print-directory >> 147 else >> 148 need-sub-make := 1 194 endif 149 endif 195 150 196 export sub_make_done := 1 !! 151 abs_srctree := $(realpath $(dir $(lastword $(MAKEFILE_LIST)))) 197 152 198 endif # sub_make_done !! 153 ifneq ($(words $(subst :, ,$(abs_srctree))), 1) >> 154 $(error source directory cannot contain spaces or colons) >> 155 endif 199 156 200 ifeq ($(abs_objtree),$(CURDIR)) !! 157 ifneq ($(abs_srctree),$(abs_objtree)) 201 # Suppress "Entering directory ..." if we are !! 158 # Look for make include files relative to root of kernel src 202 no-print-directory := --no-print-directory !! 159 # 203 else !! 160 # This does not become effective immediately because MAKEFLAGS is re-parsed 204 # Recursion to show "Entering directory ..." !! 161 # once after the Makefile is read. We need to invoke sub-make. >> 162 MAKEFLAGS += --include-dir=$(abs_srctree) 205 need-sub-make := 1 163 need-sub-make := 1 206 endif 164 endif 207 165 208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 166 ifneq ($(filter 3.%,$(MAKE_VERSION)),) 209 # If --no-print-directory is unset, recurse on !! 167 # 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x 210 # You may end up recursing into __sub-make twi !! 168 # We need to invoke sub-make to avoid implicit rules in the top Makefile. 211 # behavior change in GNU Make 4.4.1. << 212 need-sub-make := 1 169 need-sub-make := 1 >> 170 # Cancel implicit rules for this Makefile. >> 171 $(lastword $(MAKEFILE_LIST)): ; 213 endif 172 endif 214 173 >> 174 export abs_srctree abs_objtree >> 175 export sub_make_done := 1 >> 176 215 ifeq ($(need-sub-make),1) 177 ifeq ($(need-sub-make),1) 216 178 217 PHONY += $(MAKECMDGOALS) __sub-make !! 179 PHONY += $(MAKECMDGOALS) sub-make 218 180 219 $(filter-out $(this-makefile), $(MAKECMDGOALS) !! 181 $(filter-out _all sub-make $(lastword $(MAKEFILE_LIST)), $(MAKECMDGOALS)) _all: sub-make 220 @: 182 @: 221 183 222 # Invoke a second make in the output directory 184 # Invoke a second make in the output directory, passing relevant variables 223 __sub-make: !! 185 sub-make: 224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 186 $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS) 225 -f $(abs_srctree)/Makefile $(MAKECMDGO << 226 187 227 else # need-sub-make !! 188 endif # need-sub-make >> 189 endif # sub_make_done 228 190 229 # We process the rest of the Makefile if this 191 # We process the rest of the Makefile if this is the final invocation of make >> 192 ifeq ($(need-sub-make),) >> 193 >> 194 # Do not print "Entering directory ...", >> 195 # but we want to display it when entering to the output directory >> 196 # so that IDEs/editors are able to understand relative filenames. >> 197 MAKEFLAGS += --no-print-directory >> 198 >> 199 # Call a source code checker (by default, "sparse") as part of the >> 200 # C compilation. >> 201 # >> 202 # Use 'make C=1' to enable checking of only re-compiled files. >> 203 # Use 'make C=2' to enable checking of *all* source files, regardless >> 204 # of whether they are re-compiled or not. >> 205 # >> 206 # See the file "Documentation/dev-tools/sparse.rst" for more details, >> 207 # including where to get the "sparse" utility. >> 208 >> 209 ifeq ("$(origin C)", "command line") >> 210 KBUILD_CHECKSRC = $(C) >> 211 endif >> 212 ifndef KBUILD_CHECKSRC >> 213 KBUILD_CHECKSRC = 0 >> 214 endif >> 215 >> 216 # Use make M=dir or set the environment variable KBUILD_EXTMOD to specify the >> 217 # directory of external module to build. Setting M= takes precedence. >> 218 ifeq ("$(origin M)", "command line") >> 219 KBUILD_EXTMOD := $(M) >> 220 endif >> 221 >> 222 export KBUILD_CHECKSRC KBUILD_EXTMOD >> 223 >> 224 extmod-prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/) 230 225 231 ifeq ($(abs_srctree),$(abs_objtree)) 226 ifeq ($(abs_srctree),$(abs_objtree)) 232 # building in the source tree 227 # building in the source tree 233 srctree := . 228 srctree := . 234 building_out_of_srctree := 229 building_out_of_srctree := 235 else 230 else 236 ifeq ($(abs_srctree)/,$(dir $(abs_objt 231 ifeq ($(abs_srctree)/,$(dir $(abs_objtree))) 237 # building in a subdirectory o 232 # building in a subdirectory of the source tree 238 srctree := .. 233 srctree := .. 239 else 234 else 240 srctree := $(abs_srctree) 235 srctree := $(abs_srctree) 241 endif 236 endif 242 building_out_of_srctree := 1 237 building_out_of_srctree := 1 243 endif 238 endif 244 239 245 ifneq ($(KBUILD_ABS_SRCTREE),) 240 ifneq ($(KBUILD_ABS_SRCTREE),) 246 srctree := $(abs_srctree) 241 srctree := $(abs_srctree) 247 endif 242 endif 248 243 249 objtree := . 244 objtree := . 250 << 251 VPATH := << 252 << 253 ifeq ($(KBUILD_EXTMOD),) << 254 ifdef building_out_of_srctree << 255 VPATH := $(srctree) 245 VPATH := $(srctree) 256 endif << 257 endif << 258 246 259 export building_out_of_srctree srctree objtree 247 export building_out_of_srctree srctree objtree VPATH 260 248 261 # To make sure we do not include .config for a 249 # To make sure we do not include .config for any of the *config targets 262 # catch them early, and hand them over to scri 250 # catch them early, and hand them over to scripts/kconfig/Makefile 263 # It is allowed to specify more targets when c 251 # It is allowed to specify more targets when calling make, including 264 # mixing *config targets and build targets. 252 # mixing *config targets and build targets. 265 # For example 'make oldconfig all'. 253 # For example 'make oldconfig all'. 266 # Detect when mixed targets is specified, and 254 # Detect when mixed targets is specified, and make a second invocation 267 # of make so .config is not included in this c 255 # of make so .config is not included in this case either (for *config). 268 256 269 version_h := include/generated/uapi/linux/vers 257 version_h := include/generated/uapi/linux/version.h >> 258 old_version_h := include/linux/version.h 270 259 271 clean-targets := %clean mrproper cleandocs 260 clean-targets := %clean mrproper cleandocs 272 no-dot-config-targets := $(clean-targets) \ 261 no-dot-config-targets := $(clean-targets) \ 273 cscope gtags TAGS tag 262 cscope gtags TAGS tags help% %docs check% coccicheck \ 274 $(version_h) headers 263 $(version_h) headers headers_% archheaders archscripts \ 275 %asm-generic kernelve !! 264 %asm-generic kernelversion %src-pkg 276 outputmakefile rustav !! 265 no-sync-config-targets := $(no-dot-config-targets) install %install \ 277 no-sync-config-targets := $(no-dot-config-targ !! 266 kernelrelease 278 image_name !! 267 single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/ 279 single-targets := %.a %.i %.ko %.lds %.ll %.ls << 280 268 281 config-build := 269 config-build := 282 mixed-build := 270 mixed-build := 283 need-config := 1 271 need-config := 1 284 may-sync-config := 1 272 may-sync-config := 1 285 single-build := 273 single-build := 286 274 287 ifneq ($(filter $(no-dot-config-targets), $(MA 275 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 288 ifeq ($(filter-out $(no-dot-config-targets !! 276 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 289 need-config := !! 277 need-config := 290 endif !! 278 endif 291 endif 279 endif 292 280 293 ifneq ($(filter $(no-sync-config-targets), $(M 281 ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) 294 ifeq ($(filter-out $(no-sync-config-target !! 282 ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) 295 may-sync-config := !! 283 may-sync-config := 296 endif !! 284 endif 297 endif 285 endif 298 286 299 need-compiler := $(may-sync-config) << 300 << 301 ifneq ($(KBUILD_EXTMOD),) 287 ifneq ($(KBUILD_EXTMOD),) 302 may-sync-config := !! 288 may-sync-config := 303 endif 289 endif 304 290 305 ifeq ($(KBUILD_EXTMOD),) 291 ifeq ($(KBUILD_EXTMOD),) 306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 292 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 307 config-build := 1 !! 293 config-build := 1 308 ifneq ($(words $(MAKECMDGOALS)),1) !! 294 ifneq ($(words $(MAKECMDGOALS)),1) 309 mixed-build := 1 !! 295 mixed-build := 1 >> 296 endif 310 endif 297 endif 311 endif << 312 endif 298 endif 313 299 314 # We cannot build single targets and the other 300 # We cannot build single targets and the others at the same time 315 ifneq ($(filter $(single-targets), $(MAKECMDGO 301 ifneq ($(filter $(single-targets), $(MAKECMDGOALS)),) 316 single-build := 1 !! 302 single-build := 1 317 ifneq ($(filter-out $(single-targets), $(M !! 303 ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),) 318 mixed-build := 1 !! 304 mixed-build := 1 319 endif !! 305 endif 320 endif 306 endif 321 307 322 # For "make -j clean all", "make -j mrproper d 308 # For "make -j clean all", "make -j mrproper defconfig all", etc. 323 ifneq ($(filter $(clean-targets),$(MAKECMDGOAL 309 ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 324 ifneq ($(filter-out $(clean-targets),$(MAK !! 310 ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 325 mixed-build := 1 !! 311 mixed-build := 1 326 endif !! 312 endif 327 endif 313 endif 328 314 329 # install and modules_install need also be pro 315 # install and modules_install need also be processed one by one 330 ifneq ($(filter install,$(MAKECMDGOALS)),) 316 ifneq ($(filter install,$(MAKECMDGOALS)),) 331 ifneq ($(filter modules_install,$(MAKECMDG !! 317 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 332 mixed-build := 1 !! 318 mixed-build := 1 333 endif !! 319 endif 334 endif 320 endif 335 321 336 ifdef mixed-build 322 ifdef mixed-build 337 # ============================================ 323 # =========================================================================== 338 # We're called with mixed targets (*config and 324 # We're called with mixed targets (*config and build targets). 339 # Handle them one by one. 325 # Handle them one by one. 340 326 341 PHONY += $(MAKECMDGOALS) __build_one_by_one 327 PHONY += $(MAKECMDGOALS) __build_one_by_one 342 328 343 $(MAKECMDGOALS): __build_one_by_one !! 329 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 344 @: 330 @: 345 331 346 __build_one_by_one: 332 __build_one_by_one: 347 $(Q)set -e; \ 333 $(Q)set -e; \ 348 for i in $(MAKECMDGOALS); do \ 334 for i in $(MAKECMDGOALS); do \ 349 $(MAKE) -f $(srctree)/Makefile 335 $(MAKE) -f $(srctree)/Makefile $$i; \ 350 done 336 done 351 337 352 else # !mixed-build 338 else # !mixed-build 353 339 354 include $(srctree)/scripts/Kbuild.include !! 340 include scripts/Kbuild.include 355 341 356 # Read KERNELRELEASE from include/config/kerne 342 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 357 KERNELRELEASE = $(call read-file, include/conf !! 343 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. 344 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA 345 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 360 346 361 include $(srctree)/scripts/subarch.include !! 347 include scripts/subarch.include 362 348 363 # Cross compiling and selecting different set 349 # Cross compiling and selecting different set of gcc/bin-utils 364 # -------------------------------------------- 350 # --------------------------------------------------------------------------- 365 # 351 # 366 # When performing cross compilation for other 352 # When performing cross compilation for other architectures ARCH shall be set 367 # to the target architecture. (See arch/* for 353 # to the target architecture. (See arch/* for the possibilities). 368 # ARCH can be set during invocation of make: 354 # ARCH can be set during invocation of make: 369 # make ARCH=arm64 !! 355 # make ARCH=ia64 370 # Another way is to have ARCH set in the envir 356 # Another way is to have ARCH set in the environment. 371 # The default ARCH is the host where make is e 357 # The default ARCH is the host where make is executed. 372 358 373 # CROSS_COMPILE specify the prefix used for al 359 # CROSS_COMPILE specify the prefix used for all executables used 374 # during compilation. Only gcc and related bin 360 # during compilation. Only gcc and related bin-utils executables 375 # are prefixed with $(CROSS_COMPILE). 361 # are prefixed with $(CROSS_COMPILE). 376 # CROSS_COMPILE can be set on the command line 362 # CROSS_COMPILE can be set on the command line 377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 363 # make CROSS_COMPILE=ia64-linux- 378 # Alternatively CROSS_COMPILE can be set in th 364 # Alternatively CROSS_COMPILE can be set in the environment. 379 # Default value for CROSS_COMPILE is not to pr 365 # Default value for CROSS_COMPILE is not to prefix executables 380 # Note: Some architectures assign CROSS_COMPIL 366 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 381 ARCH ?= $(SUBARCH) 367 ARCH ?= $(SUBARCH) 382 368 383 # Architecture as present in compile.h 369 # Architecture as present in compile.h 384 UTS_MACHINE := $(ARCH) 370 UTS_MACHINE := $(ARCH) 385 SRCARCH := $(ARCH) 371 SRCARCH := $(ARCH) 386 372 387 # Additional ARCH settings for x86 373 # Additional ARCH settings for x86 388 ifeq ($(ARCH),i386) 374 ifeq ($(ARCH),i386) 389 SRCARCH := x86 375 SRCARCH := x86 390 endif 376 endif 391 ifeq ($(ARCH),x86_64) 377 ifeq ($(ARCH),x86_64) 392 SRCARCH := x86 378 SRCARCH := x86 393 endif 379 endif 394 380 395 # Additional ARCH settings for sparc 381 # Additional ARCH settings for sparc 396 ifeq ($(ARCH),sparc32) 382 ifeq ($(ARCH),sparc32) 397 SRCARCH := sparc 383 SRCARCH := sparc 398 endif 384 endif 399 ifeq ($(ARCH),sparc64) 385 ifeq ($(ARCH),sparc64) 400 SRCARCH := sparc 386 SRCARCH := sparc 401 endif 387 endif 402 388 403 # Additional ARCH settings for parisc !! 389 # Additional ARCH settings for sh 404 ifeq ($(ARCH),parisc64) !! 390 ifeq ($(ARCH),sh64) 405 SRCARCH := parisc !! 391 SRCARCH := sh 406 endif << 407 << 408 export cross_compiling := << 409 ifneq ($(SRCARCH),$(SUBARCH)) << 410 cross_compiling := 1 << 411 endif 392 endif 412 393 413 KCONFIG_CONFIG ?= .config 394 KCONFIG_CONFIG ?= .config 414 export KCONFIG_CONFIG 395 export KCONFIG_CONFIG 415 396 416 # SHELL used by kbuild 397 # SHELL used by kbuild 417 CONFIG_SHELL := sh 398 CONFIG_SHELL := sh 418 399 419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 400 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG 401 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d 402 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 422 403 423 ifneq ($(LLVM),) 404 ifneq ($(LLVM),) 424 ifneq ($(filter %/,$(LLVM)),) !! 405 HOSTCC = clang 425 LLVM_PREFIX := $(LLVM) !! 406 HOSTCXX = clang++ 426 else ifneq ($(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 407 else 433 HOSTCC = gcc 408 HOSTCC = gcc 434 HOSTCXX = g++ 409 HOSTCXX = g++ 435 endif 410 endif 436 HOSTRUSTC = rustc !! 411 KBUILD_HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \ 437 HOSTPKG_CONFIG = pkg-config !! 412 -fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) \ 438 !! 413 $(HOSTCFLAGS) 439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto !! 414 KBUILD_HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 440 -O2 -fomit-frame-poin << 441 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) << 442 KBUILD_USERLDFLAGS := $(USERLDFLAGS) << 443 << 444 # These flags apply to all Rust code in the tr << 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 415 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 469 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOST 416 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 470 417 471 # Make variables (CC, etc...) 418 # Make variables (CC, etc...) 472 CPP = $(CC) -E 419 CPP = $(CC) -E 473 ifneq ($(LLVM),) 420 ifneq ($(LLVM),) 474 CC = $(LLVM_PREFIX)clang$(LLVM_SU !! 421 CC = clang 475 LD = $(LLVM_PREFIX)ld.lld$(LLVM_S !! 422 LD = ld.lld 476 AR = $(LLVM_PREFIX)llvm-ar$(LLVM_ !! 423 AR = llvm-ar 477 NM = $(LLVM_PREFIX)llvm-nm$(LLVM_ !! 424 NM = llvm-nm 478 OBJCOPY = $(LLVM_PREFIX)llvm-objcopy$( !! 425 OBJCOPY = llvm-objcopy 479 OBJDUMP = $(LLVM_PREFIX)llvm-objdump$( !! 426 OBJDUMP = llvm-objdump 480 READELF = $(LLVM_PREFIX)llvm-readelf$( !! 427 READELF = llvm-readelf 481 STRIP = $(LLVM_PREFIX)llvm-strip$(LL !! 428 OBJSIZE = llvm-size >> 429 STRIP = llvm-strip 482 else 430 else 483 CC = $(CROSS_COMPILE)gcc 431 CC = $(CROSS_COMPILE)gcc 484 LD = $(CROSS_COMPILE)ld 432 LD = $(CROSS_COMPILE)ld 485 AR = $(CROSS_COMPILE)ar 433 AR = $(CROSS_COMPILE)ar 486 NM = $(CROSS_COMPILE)nm 434 NM = $(CROSS_COMPILE)nm 487 OBJCOPY = $(CROSS_COMPILE)objcopy 435 OBJCOPY = $(CROSS_COMPILE)objcopy 488 OBJDUMP = $(CROSS_COMPILE)objdump 436 OBJDUMP = $(CROSS_COMPILE)objdump 489 READELF = $(CROSS_COMPILE)readelf 437 READELF = $(CROSS_COMPILE)readelf >> 438 OBJSIZE = $(CROSS_COMPILE)size 490 STRIP = $(CROSS_COMPILE)strip 439 STRIP = $(CROSS_COMPILE)strip 491 endif 440 endif 492 RUSTC = rustc << 493 RUSTDOC = rustdoc << 494 RUSTFMT = rustfmt << 495 CLIPPY_DRIVER = clippy-driver << 496 BINDGEN = bindgen << 497 PAHOLE = pahole 441 PAHOLE = pahole 498 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve << 499 LEX = flex 442 LEX = flex 500 YACC = bison 443 YACC = bison 501 AWK = awk 444 AWK = awk 502 INSTALLKERNEL := installkernel 445 INSTALLKERNEL := installkernel >> 446 DEPMOD = depmod 503 PERL = perl 447 PERL = perl >> 448 PYTHON = python 504 PYTHON3 = python3 449 PYTHON3 = python3 505 CHECK = sparse 450 CHECK = sparse 506 BASH = bash 451 BASH = bash 507 KGZIP = gzip 452 KGZIP = gzip 508 KBZIP2 = bzip2 453 KBZIP2 = bzip2 509 KLZOP = lzop 454 KLZOP = lzop 510 LZMA = lzma 455 LZMA = lzma 511 LZ4 = lz4c 456 LZ4 = lz4c 512 XZ = xz 457 XZ = xz 513 ZSTD = zstd << 514 458 515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC 459 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 516 -Wbitwise -Wno-return-void - 460 -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 517 NOSTDINC_FLAGS := 461 NOSTDINC_FLAGS := 518 CFLAGS_MODULE = 462 CFLAGS_MODULE = 519 RUSTFLAGS_MODULE = << 520 AFLAGS_MODULE = 463 AFLAGS_MODULE = 521 LDFLAGS_MODULE = 464 LDFLAGS_MODULE = 522 CFLAGS_KERNEL = 465 CFLAGS_KERNEL = 523 RUSTFLAGS_KERNEL = << 524 AFLAGS_KERNEL = 466 AFLAGS_KERNEL = 525 LDFLAGS_vmlinux = 467 LDFLAGS_vmlinux = 526 468 527 # Use USERINCLUDE when you must reference the 469 # Use USERINCLUDE when you must reference the UAPI directories only. 528 USERINCLUDE := \ 470 USERINCLUDE := \ 529 -I$(srctree)/arch/$(SRCARCH)/i 471 -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 530 -I$(objtree)/arch/$(SRCARCH)/i 472 -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 531 -I$(srctree)/include/uapi \ 473 -I$(srctree)/include/uapi \ 532 -I$(objtree)/include/generated 474 -I$(objtree)/include/generated/uapi \ 533 -include $(srctree)/include/li << 534 -include $(srctree)/include/li 475 -include $(srctree)/include/linux/kconfig.h 535 476 536 # Use LINUXINCLUDE when you must reference the 477 # Use LINUXINCLUDE when you must reference the include/ directory. 537 # Needed to be compatible with the O= option 478 # Needed to be compatible with the O= option 538 LINUXINCLUDE := \ 479 LINUXINCLUDE := \ 539 -I$(srctree)/arch/$(SRCARCH)/i 480 -I$(srctree)/arch/$(SRCARCH)/include \ 540 -I$(objtree)/arch/$(SRCARCH)/i 481 -I$(objtree)/arch/$(SRCARCH)/include/generated \ 541 $(if $(building_out_of_srctree 482 $(if $(building_out_of_srctree),-I$(srctree)/include) \ 542 -I$(objtree)/include \ 483 -I$(objtree)/include \ 543 $(USERINCLUDE) 484 $(USERINCLUDE) 544 485 545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 486 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 546 !! 487 KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ 547 KBUILD_CFLAGS := !! 488 -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ 548 KBUILD_CFLAGS += -std=gnu11 !! 489 -Werror=implicit-function-declaration -Werror=implicit-int \ 549 KBUILD_CFLAGS += -fshort-wchar !! 490 -Werror=return-type -Wno-format-security \ 550 KBUILD_CFLAGS += -funsigned-char !! 491 -std=gnu89 551 KBUILD_CFLAGS += -fno-common << 552 KBUILD_CFLAGS += -fno-PIE << 553 KBUILD_CFLAGS += -fno-strict-aliasing << 554 << 555 KBUILD_CPPFLAGS := -D__KERNEL__ 492 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 := 493 KBUILD_AFLAGS_KERNEL := 565 KBUILD_CFLAGS_KERNEL := 494 KBUILD_CFLAGS_KERNEL := 566 KBUILD_RUSTFLAGS_KERNEL := << 567 KBUILD_AFLAGS_MODULE := -DMODULE 495 KBUILD_AFLAGS_MODULE := -DMODULE 568 KBUILD_CFLAGS_MODULE := -DMODULE 496 KBUILD_CFLAGS_MODULE := -DMODULE 569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE << 570 KBUILD_LDFLAGS_MODULE := 497 KBUILD_LDFLAGS_MODULE := >> 498 export KBUILD_LDS_MODULE := $(srctree)/scripts/module-common.lds 571 KBUILD_LDFLAGS := 499 KBUILD_LDFLAGS := >> 500 GCC_PLUGINS_CFLAGS := 572 CLANG_FLAGS := 501 CLANG_FLAGS := 573 502 574 ifeq ($(KBUILD_CLIPPY),1) !! 503 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC 575 RUSTC_OR_CLIPPY_QUIET := CLIPPY !! 504 export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF PAHOLE LEX YACC AWK INSTALLKERNEL 576 RUSTC_OR_CLIPPY = $(CLIPPY_DRIVER) !! 505 export PERL PYTHON PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX 577 else !! 506 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ 578 RUSTC_OR_CLIPPY_QUIET := RUSTC << 579 RUSTC_OR_CLIPPY = $(RUSTC) << 580 endif << 581 << 582 # Allows the usage of unstable features in sta << 583 export RUSTC_BOOTSTRAP := 1 << 584 << 585 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K << 586 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q << 587 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS << 588 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF << 589 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ << 590 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD << 591 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS 507 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE 592 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS << 593 508 594 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC 509 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 595 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU 510 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 596 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF !! 511 export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN 597 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 512 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 598 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 513 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 599 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 514 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 600 515 601 # Files to ignore in find ... statements 516 # Files to ignore in find ... statements 602 517 603 export RCS_FIND_IGNORE := \( -name SCCS -o -na 518 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 604 -name CVS -o -name . 519 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 605 -prune -o 520 -prune -o >> 521 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ >> 522 --exclude CVS --exclude .pc --exclude .hg --exclude .git 606 523 607 # ============================================ 524 # =========================================================================== 608 # Rules shared between *config targets and bui 525 # Rules shared between *config targets and build targets 609 526 610 # Basic helpers built in scripts/basic/ 527 # Basic helpers built in scripts/basic/ 611 PHONY += scripts_basic 528 PHONY += scripts_basic 612 scripts_basic: 529 scripts_basic: 613 $(Q)$(MAKE) $(build)=scripts/basic 530 $(Q)$(MAKE) $(build)=scripts/basic >> 531 $(Q)rm -f .tmp_quiet_recordmcount 614 532 615 PHONY += outputmakefile 533 PHONY += outputmakefile 616 ifdef building_out_of_srctree << 617 # Before starting out-of-tree build, make sure 534 # Before starting out-of-tree build, make sure the source tree is clean. 618 # outputmakefile generates a Makefile in the o 535 # outputmakefile generates a Makefile in the output directory, if using a 619 # separate output directory. This allows conve 536 # separate output directory. This allows convenient use of make in the 620 # output directory. 537 # output directory. 621 # At the same time when output Makefile genera 538 # At the same time when output Makefile generated, generate .gitignore to 622 # ignore whole output directory 539 # ignore whole output directory 623 << 624 quiet_cmd_makefile = GEN Makefile << 625 cmd_makefile = { \ << 626 echo "\# Automatically generated by $( << 627 echo "include $(srctree)/Makefile"; \ << 628 } > Makefile << 629 << 630 outputmakefile: 540 outputmakefile: 631 @if [ -f $(srctree)/.config -o \ !! 541 ifdef building_out_of_srctree >> 542 $(Q)if [ -f $(srctree)/.config -o \ 632 -d $(srctree)/include/config 543 -d $(srctree)/include/config -o \ 633 -d $(srctree)/arch/$(SRCARCH) 544 -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \ 634 echo >&2 "***"; \ 545 echo >&2 "***"; \ 635 echo >&2 "*** The source tree 546 echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \ 636 echo >&2 "*** in $(abs_srctree 547 echo >&2 "*** in $(abs_srctree)";\ 637 echo >&2 "***"; \ 548 echo >&2 "***"; \ 638 false; \ 549 false; \ 639 fi 550 fi 640 $(Q)ln -fsn $(srctree) source 551 $(Q)ln -fsn $(srctree) source 641 $(call cmd,makefile) !! 552 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) 642 $(Q)test -e .gitignore || \ 553 $(Q)test -e .gitignore || \ 643 { echo "# this is build directory, ign 554 { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore 644 endif 555 endif 645 556 646 # The expansion should be delayed until arch/$ !! 557 ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),) 647 # Some architectures define CROSS_COMPILE in a !! 558 ifneq ($(CROSS_COMPILE),) 648 # CC_VERSION_TEXT and RUSTC_VERSION_TEXT are r !! 559 CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) 649 # need export), and from include/config/auto.c !! 560 GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) 650 # upgrade. !! 561 CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE)) 651 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC !! 562 GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) 652 RUSTC_VERSION_TEXT = $(subst $(pound),,$(shell !! 563 endif 653 !! 564 ifneq ($(GCC_TOOLCHAIN),) 654 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), !! 565 CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN) 655 include $(srctree)/scripts/Makefile.clang !! 566 endif >> 567 ifneq ($(LLVM_IAS),1) >> 568 CLANG_FLAGS += -no-integrated-as >> 569 endif >> 570 CLANG_FLAGS += -Werror=unknown-warning-option >> 571 KBUILD_CFLAGS += $(CLANG_FLAGS) >> 572 KBUILD_AFLAGS += $(CLANG_FLAGS) >> 573 export CLANG_FLAGS 656 endif 574 endif 657 575 658 # Include this also for config targets because !! 576 # The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 659 # cc-cross-prefix to determine CROSS_COMPILE. !! 577 # Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 660 ifdef need-compiler !! 578 # CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 661 include $(srctree)/scripts/Makefile.compiler !! 579 # and from include/config/auto.conf.cmd to detect the compiler upgrade. 662 endif !! 580 CC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1) 663 581 664 ifdef config-build 582 ifdef config-build 665 # ============================================ 583 # =========================================================================== 666 # *config targets only - make sure prerequisit 584 # *config targets only - make sure prerequisites are updated, and descend 667 # in scripts/kconfig to make the *config targe 585 # in scripts/kconfig to make the *config target 668 586 669 # Read arch-specific Makefile to set KBUILD_DE !! 587 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 670 # KBUILD_DEFCONFIG may point out an alternativ 588 # KBUILD_DEFCONFIG may point out an alternative default configuration 671 # used for 'make defconfig' 589 # used for 'make defconfig' 672 include $(srctree)/arch/$(SRCARCH)/Makefile !! 590 include arch/$(SRCARCH)/Makefile 673 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS !! 591 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 674 592 675 config: outputmakefile scripts_basic FORCE 593 config: outputmakefile scripts_basic FORCE 676 $(Q)$(MAKE) $(build)=scripts/kconfig $ 594 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 677 595 678 %config: outputmakefile scripts_basic FORCE 596 %config: outputmakefile scripts_basic FORCE 679 $(Q)$(MAKE) $(build)=scripts/kconfig $ 597 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 680 598 681 else #!config-build 599 else #!config-build 682 # ============================================ 600 # =========================================================================== 683 # Build targets only - this includes vmlinux, !! 601 # Build targets only - this includes vmlinux, arch specific targets, clean 684 # targets and others. In general all targets e 602 # targets and others. In general all targets except *config targets. 685 603 686 # If building an external module we do not car 604 # If building an external module we do not care about the all: rule 687 # but instead __all depend on modules !! 605 # but instead _all depend on modules 688 PHONY += all 606 PHONY += all 689 ifeq ($(KBUILD_EXTMOD),) 607 ifeq ($(KBUILD_EXTMOD),) 690 __all: all !! 608 _all: all 691 else 609 else 692 __all: modules !! 610 _all: modules 693 endif 611 endif 694 612 695 targets := << 696 << 697 # Decide whether to build built-in, modular, o 613 # Decide whether to build built-in, modular, or both. 698 # Normally, just do built-in. 614 # Normally, just do built-in. 699 615 700 KBUILD_MODULES := 616 KBUILD_MODULES := 701 KBUILD_BUILTIN := 1 617 KBUILD_BUILTIN := 1 702 618 703 # If we have only "make modules", don't compil 619 # If we have only "make modules", don't compile built-in objects. 704 ifeq ($(MAKECMDGOALS),modules) 620 ifeq ($(MAKECMDGOALS),modules) 705 KBUILD_BUILTIN := 621 KBUILD_BUILTIN := 706 endif 622 endif 707 623 708 # If we have "make <whatever> modules", compil 624 # If we have "make <whatever> modules", compile modules 709 # in addition to whatever we do anyway. 625 # in addition to whatever we do anyway. 710 # Just "make" or "make all" shall build module 626 # Just "make" or "make all" shall build modules as well 711 627 712 ifneq ($(filter all modules nsdeps %compile_co !! 628 ifneq ($(filter all _all modules nsdeps,$(MAKECMDGOALS)),) 713 KBUILD_MODULES := 1 629 KBUILD_MODULES := 1 714 endif 630 endif 715 631 716 ifeq ($(MAKECMDGOALS),) 632 ifeq ($(MAKECMDGOALS),) 717 KBUILD_MODULES := 1 633 KBUILD_MODULES := 1 718 endif 634 endif 719 635 720 export KBUILD_MODULES KBUILD_BUILTIN 636 export KBUILD_MODULES KBUILD_BUILTIN 721 637 722 ifdef need-config 638 ifdef need-config 723 include include/config/auto.conf 639 include include/config/auto.conf 724 endif 640 endif 725 641 726 ifeq ($(KBUILD_EXTMOD),) 642 ifeq ($(KBUILD_EXTMOD),) 727 # Objects we will link into vmlinux / subdirs 643 # Objects we will link into vmlinux / subdirs we need to visit 728 core-y := !! 644 init-y := init/ 729 drivers-y := !! 645 drivers-y := drivers/ sound/ >> 646 drivers-$(CONFIG_SAMPLES) += samples/ >> 647 net-y := net/ 730 libs-y := lib/ 648 libs-y := lib/ >> 649 core-y := usr/ >> 650 virt-y := virt/ 731 endif # KBUILD_EXTMOD 651 endif # KBUILD_EXTMOD 732 652 733 # The all: target is the default when no targe 653 # The all: target is the default when no target is given on the 734 # command line. 654 # command line. 735 # This allow a user to issue only 'make' to bu 655 # This allow a user to issue only 'make' to build a kernel including modules 736 # Defaults to vmlinux, but the arch makefile u 656 # Defaults to vmlinux, but the arch makefile usually adds further targets 737 all: vmlinux 657 all: vmlinux 738 658 739 CFLAGS_GCOV := -fprofile-arcs -ftest-cover !! 659 CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ 740 ifdef CONFIG_CC_IS_GCC !! 660 $(call cc-option,-fno-tree-loop-im) \ 741 CFLAGS_GCOV += -fno-tree-loop-im !! 661 $(call cc-disable-warning,maybe-uninitialized,) 742 endif << 743 export CFLAGS_GCOV 662 export CFLAGS_GCOV 744 663 745 # The arch Makefiles can override CC_FLAGS_FTR 664 # The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. 746 ifdef CONFIG_FUNCTION_TRACER 665 ifdef CONFIG_FUNCTION_TRACER 747 CC_FLAGS_FTRACE := -pg 666 CC_FLAGS_FTRACE := -pg 748 endif 667 endif 749 668 750 include $(srctree)/arch/$(SRCARCH)/Makefile !! 669 RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register >> 670 RETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register >> 671 RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk >> 672 RETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline >> 673 RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG))) >> 674 RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG))) >> 675 export RETPOLINE_CFLAGS >> 676 export RETPOLINE_VDSO_CFLAGS >> 677 >> 678 include arch/$(SRCARCH)/Makefile 751 679 752 ifdef need-config 680 ifdef need-config 753 ifdef may-sync-config 681 ifdef may-sync-config 754 # Read in dependencies to all Kconfig* files, 682 # Read in dependencies to all Kconfig* files, make sure to run syncconfig if 755 # changes are detected. This should be include 683 # changes are detected. This should be included after arch/$(SRCARCH)/Makefile 756 # because some architectures define CROSS_COMP 684 # because some architectures define CROSS_COMPILE there. 757 include include/config/auto.conf.cmd 685 include include/config/auto.conf.cmd 758 686 759 $(KCONFIG_CONFIG): 687 $(KCONFIG_CONFIG): 760 @echo >&2 '***' 688 @echo >&2 '***' 761 @echo >&2 '*** Configuration file "$@" 689 @echo >&2 '*** Configuration file "$@" not found!' 762 @echo >&2 '***' 690 @echo >&2 '***' 763 @echo >&2 '*** Please run some configu 691 @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or' 764 @echo >&2 '*** "make menuconfig" or "m 692 @echo >&2 '*** "make menuconfig" or "make xconfig").' 765 @echo >&2 '***' 693 @echo >&2 '***' 766 @/bin/false 694 @/bin/false 767 695 768 # The actual configuration files used during t 696 # The actual configuration files used during the build are stored in 769 # include/generated/ and include/config/. Upda 697 # include/generated/ and include/config/. Update them if .config is newer than 770 # include/config/auto.conf (which mirrors .con 698 # include/config/auto.conf (which mirrors .config). 771 # 699 # 772 # This exploits the 'multi-target pattern rule 700 # This exploits the 'multi-target pattern rule' trick. 773 # The syncconfig should be executed only once 701 # The syncconfig should be executed only once to make all the targets. 774 # (Note: use the grouped target '&:' when we b !! 702 %/auto.conf %/auto.conf.cmd %/tristate.conf: $(KCONFIG_CONFIG) 775 # << 776 # Do not use $(call cmd,...) here. That would << 777 # so you cannot notice that Kconfig is waiting << 778 %/config/auto.conf %/config/auto.conf.cmd %/ge << 779 $(Q)$(kecho) " SYNC $@" << 780 $(Q)$(MAKE) -f $(srctree)/Makefile syn 703 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 781 else # !may-sync-config 704 else # !may-sync-config 782 # External modules and some install targets ne 705 # External modules and some install targets need include/generated/autoconf.h 783 # and include/config/auto.conf but do not care 706 # and include/config/auto.conf but do not care if they are up-to-date. 784 # Use auto.conf to trigger the test 707 # Use auto.conf to trigger the test 785 PHONY += include/config/auto.conf 708 PHONY += include/config/auto.conf 786 709 787 include/config/auto.conf: 710 include/config/auto.conf: 788 @test -e include/generated/autoconf.h !! 711 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 789 echo >&2; 712 echo >&2; \ 790 echo >&2 " ERROR: Kernel configuratio 713 echo >&2 " ERROR: Kernel configuration is invalid."; \ 791 echo >&2 " include/generated/a 714 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 792 echo >&2 " Run 'make oldconfig 715 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 793 echo >&2 ; 716 echo >&2 ; \ 794 /bin/false) 717 /bin/false) 795 718 796 endif # may-sync-config 719 endif # may-sync-config 797 endif # need-config 720 endif # need-config 798 721 799 KBUILD_CFLAGS += -fno-delete-null-pointer-ch !! 722 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) >> 723 KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) >> 724 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) >> 725 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) >> 726 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 800 727 801 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 728 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 802 KBUILD_CFLAGS += -O2 729 KBUILD_CFLAGS += -O2 803 KBUILD_RUSTFLAGS += -Copt-level=2 !! 730 else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 >> 731 KBUILD_CFLAGS += -O3 804 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 732 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 805 KBUILD_CFLAGS += -Os 733 KBUILD_CFLAGS += -Os 806 KBUILD_RUSTFLAGS += -Copt-level=s << 807 endif 734 endif 808 735 809 # Always set `debug-assertions` and `overflow- << 810 # depends on `opt-level` and `debug-assertions << 811 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( << 812 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C << 813 << 814 # Tell gcc to never replace conditional load w 736 # Tell gcc to never replace conditional load with a non-conditional one 815 ifdef CONFIG_CC_IS_GCC << 816 # gcc-10 renamed --param=allow-store-data-race << 817 # -fno-allow-store-data-races. << 818 KBUILD_CFLAGS += $(call cc-option,--param=al 737 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 819 KBUILD_CFLAGS += $(call cc-option,-fno-allow 738 KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) 820 endif !! 739 >> 740 include scripts/Makefile.kcov >> 741 include scripts/Makefile.gcc-plugins 821 742 822 ifdef CONFIG_READABLE_ASM 743 ifdef CONFIG_READABLE_ASM 823 # Disable optimizations that make assembler li 744 # Disable optimizations that make assembler listings hard to read. 824 # reorder blocks reorders the control in the f 745 # reorder blocks reorders the control in the function 825 # ipa clone creates specialized cloned functio 746 # ipa clone creates specialized cloned functions 826 # partial inlining inlines only parts of funct 747 # partial inlining inlines only parts of functions 827 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- !! 748 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ >> 749 $(call cc-option,-fno-ipa-cp-clone,) \ >> 750 $(call cc-option,-fno-partial-inlining) 828 endif 751 endif 829 752 830 stackp-flags-y !! 753 ifneq ($(CONFIG_FRAME_WARN),0) >> 754 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) >> 755 endif >> 756 >> 757 stackp-flags-$(CONFIG_CC_HAS_STACKPROTECTOR_NONE) := -fno-stack-protector 831 stackp-flags-$(CONFIG_STACKPROTECTOR) 758 stackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector 832 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) 759 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong 833 760 834 KBUILD_CFLAGS += $(stackp-flags-y) 761 KBUILD_CFLAGS += $(stackp-flags-y) 835 762 836 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning !! 763 ifdef CONFIG_CC_IS_CLANG 837 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) !! 764 KBUILD_CPPFLAGS += -Qunused-arguments >> 765 KBUILD_CFLAGS += -Wno-format-invalid-specifier >> 766 KBUILD_CFLAGS += -Wno-gnu >> 767 # Quiet clang warning: comparison of unsigned expression < 0 is always false >> 768 KBUILD_CFLAGS += -Wno-tautological-compare >> 769 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the >> 770 # source of a reference will be _MergedGlobals and not on of the whitelisted names. >> 771 # See modpost pattern 2 >> 772 KBUILD_CFLAGS += -mno-global-merge >> 773 else >> 774 >> 775 # Warn about unmarked fall-throughs in switch statement. >> 776 # Disabled for clang while comment to attribute conversion happens and >> 777 # https://github.com/ClangBuiltLinux/linux/issues/636 is discussed. >> 778 KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,) >> 779 endif >> 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 += $(call cc-disable-warning, unused-but-set-variable) >> 784 >> 785 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) >> 786 >> 787 # These result in bogus false positives >> 788 KBUILD_CFLAGS += $(call cc-disable-warning, dangling-pointer) 838 789 839 ifdef CONFIG_FRAME_POINTER 790 ifdef CONFIG_FRAME_POINTER 840 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 791 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 841 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y << 842 else 792 else 843 # Some targets (ARM with Thumb2, for example), 793 # Some targets (ARM with Thumb2, for example), can't be built with frame 844 # pointers. For those, we don't have FUNCTION 794 # pointers. For those, we don't have FUNCTION_TRACER automatically 845 # select FRAME_POINTER. However, FUNCTION_TRA 795 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 846 # incompatible with -fomit-frame-pointer with 796 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 847 # -fomit-frame-pointer with FUNCTION_TRACER. 797 # -fomit-frame-pointer with FUNCTION_TRACER. 848 # In the Rust target specification, "frame-poi << 849 # to "may-omit". << 850 ifndef CONFIG_FUNCTION_TRACER 798 ifndef CONFIG_FUNCTION_TRACER 851 KBUILD_CFLAGS += -fomit-frame-pointer 799 KBUILD_CFLAGS += -fomit-frame-pointer 852 endif 800 endif 853 endif 801 endif 854 802 855 # Initialize all stack variables with a 0xAA p !! 803 # Initialize all stack variables with a pattern, if desired. 856 ifdef CONFIG_INIT_STACK_ALL_PATTERN !! 804 ifdef CONFIG_INIT_STACK_ALL 857 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat 805 KBUILD_CFLAGS += -ftrivial-auto-var-init=pattern 858 endif 806 endif 859 807 860 # Initialize all stack variables with a zero v !! 808 DEBUG_CFLAGS := $(call cc-option, -fno-var-tracking-assignments) 861 ifdef CONFIG_INIT_STACK_ALL_ZERO !! 809 862 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer !! 810 ifdef CONFIG_DEBUG_INFO 863 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER !! 811 ifdef CONFIG_DEBUG_INFO_SPLIT 864 # https://github.com/llvm/llvm-project/issues/ !! 812 DEBUG_CFLAGS += -gsplit-dwarf 865 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi !! 813 else 866 export CC_AUTO_VAR_INIT_ZERO_ENABLER !! 814 DEBUG_CFLAGS += -g 867 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA !! 815 endif >> 816 ifeq ($(LLVM_IAS),1) >> 817 KBUILD_AFLAGS += -g >> 818 else >> 819 KBUILD_AFLAGS += -Wa,-gdwarf-2 >> 820 endif 868 endif 821 endif >> 822 >> 823 ifdef CONFIG_DEBUG_INFO_DWARF4 >> 824 DEBUG_CFLAGS += -gdwarf-4 869 endif 825 endif 870 826 871 # While VLAs have been removed, GCC produces u !! 827 ifdef CONFIG_DEBUG_INFO_REDUCED 872 # for the randomize_kstack_offset feature. Dis !! 828 DEBUG_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 873 KBUILD_CFLAGS += $(call cc-option, -fno-stac !! 829 $(call cc-option,-fno-var-tracking) 874 << 875 # Clear used registers at func exit (to reduce << 876 ifdef CONFIG_ZERO_CALL_USED_REGS << 877 KBUILD_CFLAGS += -fzero-call-used-regs=used- << 878 endif 830 endif 879 831 >> 832 KBUILD_CFLAGS += $(DEBUG_CFLAGS) >> 833 export DEBUG_CFLAGS >> 834 880 ifdef CONFIG_FUNCTION_TRACER 835 ifdef CONFIG_FUNCTION_TRACER 881 ifdef CONFIG_FTRACE_MCOUNT_USE_CC !! 836 ifdef CONFIG_FTRACE_MCOUNT_RECORD 882 CC_FLAGS_FTRACE += -mrecord-mcount !! 837 # gcc 5 supports generating the mcount tables directly >> 838 ifeq ($(call cc-option-yn,-mrecord-mcount),y) >> 839 CC_FLAGS_FTRACE += -mrecord-mcount >> 840 export CC_USING_RECORD_MCOUNT := 1 >> 841 endif 883 ifdef CONFIG_HAVE_NOP_MCOUNT 842 ifdef CONFIG_HAVE_NOP_MCOUNT 884 ifeq ($(call cc-option-yn, -mnop-mcount),y 843 ifeq ($(call cc-option-yn, -mnop-mcount),y) 885 CC_FLAGS_FTRACE += -mnop-mcount 844 CC_FLAGS_FTRACE += -mnop-mcount 886 CC_FLAGS_USING += -DCC_USING_NOP_MCOU 845 CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 887 endif 846 endif 888 endif 847 endif 889 endif 848 endif 890 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL << 891 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT << 892 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 893 endif << 894 endif << 895 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT << 896 ifdef CONFIG_HAVE_C_RECORDMCOUNT << 897 BUILD_C_RECORDMCOUNT := y << 898 export BUILD_C_RECORDMCOUNT << 899 endif << 900 endif << 901 ifdef CONFIG_HAVE_FENTRY 849 ifdef CONFIG_HAVE_FENTRY 902 # s390-linux-gnu-gcc did not support -mfentr << 903 ifeq ($(call cc-option-yn, -mfentry),y) 850 ifeq ($(call cc-option-yn, -mfentry),y) 904 CC_FLAGS_FTRACE += -mfentry 851 CC_FLAGS_FTRACE += -mfentry 905 CC_FLAGS_USING += -DCC_USING_FENTRY 852 CC_FLAGS_USING += -DCC_USING_FENTRY 906 endif 853 endif 907 endif 854 endif 908 export CC_FLAGS_FTRACE 855 export CC_FLAGS_FTRACE 909 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA 856 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 910 KBUILD_AFLAGS += $(CC_FLAGS_USING) 857 KBUILD_AFLAGS += $(CC_FLAGS_USING) >> 858 ifdef CONFIG_DYNAMIC_FTRACE >> 859 ifdef CONFIG_HAVE_C_RECORDMCOUNT >> 860 BUILD_C_RECORDMCOUNT := y >> 861 export BUILD_C_RECORDMCOUNT >> 862 endif >> 863 endif 911 endif 864 endif 912 865 913 # We trigger additional mismatches with less i 866 # We trigger additional mismatches with less inlining 914 ifdef CONFIG_DEBUG_SECTION_MISMATCH 867 ifdef CONFIG_DEBUG_SECTION_MISMATCH 915 KBUILD_CFLAGS += -fno-inline-functions-called- !! 868 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 916 endif 869 endif 917 870 918 # `rustc`'s `-Zfunction-sections` applies to d << 919 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 871 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 920 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f 872 KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 921 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections << 922 LDFLAGS_vmlinux += --gc-sections 873 LDFLAGS_vmlinux += --gc-sections 923 endif 874 endif 924 875 925 ifdef CONFIG_SHADOW_CALL_STACK !! 876 ifdef CONFIG_LIVEPATCH 926 ifndef CONFIG_DYNAMIC_SCS !! 877 KBUILD_CFLAGS += $(call cc-option, -flive-patching=inline-clone) 927 CC_FLAGS_SCS := -fsanitize=shadow-call-stac << 928 KBUILD_CFLAGS += $(CC_FLAGS_SCS) << 929 KBUILD_RUSTFLAGS += -Zsanitizer=shadow-call-st << 930 endif << 931 export CC_FLAGS_SCS << 932 endif 878 endif 933 879 934 ifdef CONFIG_LTO_CLANG !! 880 # arch Makefile may override CC so keep this after arch Makefile is included 935 ifdef CONFIG_LTO_CLANG_THIN !! 881 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 936 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit << 937 else << 938 CC_FLAGS_LTO := -flto << 939 endif << 940 CC_FLAGS_LTO += -fvisibility=hidden << 941 882 942 # Limit inlining across translation units to r !! 883 # warn about C99 declaration after statement 943 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 !! 884 KBUILD_CFLAGS += -Wdeclaration-after-statement 944 endif << 945 885 946 ifdef CONFIG_LTO !! 886 # Variable Length Arrays (VLAs) should not be used anywhere in the kernel 947 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) !! 887 KBUILD_CFLAGS += -Wvla 948 KBUILD_AFLAGS += -fno-lto << 949 export CC_FLAGS_LTO << 950 endif << 951 888 952 ifdef CONFIG_CFI_CLANG !! 889 # disable pointer signed / unsigned warnings in gcc 4.0 953 CC_FLAGS_CFI := -fsanitize=kcfi !! 890 KBUILD_CFLAGS += -Wno-pointer-sign 954 ifdef CONFIG_CFI_ICALL_NORMALIZE_INTEGERS << 955 CC_FLAGS_CFI += -fsanitize-cfi-ical << 956 endif << 957 ifdef CONFIG_RUST << 958 # Always pass -Zsanitizer-cfi-normaliz << 959 # CONFIG_CFI_ICALL_NORMALIZE_INTEGERS. << 960 RUSTC_FLAGS_CFI := -Zsanitizer=kcfi << 961 KBUILD_RUSTFLAGS += $(RUSTC_FLAGS_CFI) << 962 export RUSTC_FLAGS_CFI << 963 endif << 964 KBUILD_CFLAGS += $(CC_FLAGS_CFI) << 965 export CC_FLAGS_CFI << 966 endif << 967 891 968 # Architectures can define flags to add/remove !! 892 # disable stringop warnings in gcc 8+ 969 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN !! 893 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 970 export CC_FLAGS_FPU << 971 export CC_FLAGS_NO_FPU << 972 894 973 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) !! 895 # We'll want to enable this eventually, but it's not going away for 5.7 at least 974 # Set the minimal function alignment. Use the !! 896 KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) 975 # -fmin-function-alignment if it is available, !! 897 KBUILD_CFLAGS += $(call cc-disable-warning, array-bounds) 976 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME !! 898 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) 977 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT << 978 KBUILD_CFLAGS += -fmin-function-alignment=$(CO << 979 else << 980 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU << 981 endif << 982 endif << 983 899 984 # arch Makefile may override CC so keep this a !! 900 # Another good warning that we'll want to enable eventually 985 NOSTDINC_FLAGS += -nostdinc !! 901 KBUILD_CFLAGS += $(call cc-disable-warning, restrict) 986 902 987 # To gain proper coverage for CONFIG_UBSAN_BOU !! 903 # Enabled with W=2, disabled by default as noisy 988 # the kernel uses only C99 flexible arrays for !! 904 KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized) 989 # arrays. Enforce this for everything that may << 990 # perform bounds checking. << 991 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl << 992 << 993 #Currently, disable -Wstringop-overflow for GC << 994 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW << 995 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + << 996 905 997 # disable invalid "can't wrap" optimizations f 906 # disable invalid "can't wrap" optimizations for signed / pointers 998 KBUILD_CFLAGS += -fno-strict-overflow !! 907 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) >> 908 >> 909 # clang sets -fmerge-all-constants by default as optimization, but this >> 910 # is non-conforming behavior for C and in fact breaks the kernel, so we >> 911 # need to disable it here generally. >> 912 KBUILD_CFLAGS += $(call cc-option,-fno-merge-all-constants) >> 913 >> 914 # for gcc -fno-merge-all-constants disables everything, but it is fine >> 915 # to have actual conforming behavior enabled. >> 916 KBUILD_CFLAGS += $(call cc-option,-fmerge-constants) 999 917 1000 # Make sure -fstack-check isn't enabled (like 918 # Make sure -fstack-check isn't enabled (like gentoo apparently did) 1001 KBUILD_CFLAGS += -fno-stack-check !! 919 KBUILD_CFLAGS += $(call cc-option,-fno-stack-check,) 1002 920 1003 # conserve stack if available 921 # conserve stack if available 1004 ifdef CONFIG_CC_IS_GCC !! 922 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 1005 KBUILD_CFLAGS += -fconserve-stack !! 923 1006 endif !! 924 # Prohibit date/time macros, which would make the build non-deterministic >> 925 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) >> 926 >> 927 # enforce correct pointer usage >> 928 KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) >> 929 >> 930 # Require designated initializers for all marked structures >> 931 KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 1007 932 1008 # change __FILE__ to the relative path from t 933 # change __FILE__ to the relative path from the srctree 1009 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p !! 934 KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 1010 935 1011 # include additional Makefiles when needed !! 936 include scripts/Makefile.kasan 1012 include-y := scripts/Ma !! 937 include scripts/Makefile.extrawarn 1013 include-$(CONFIG_DEBUG_INFO) += scripts/Ma !! 938 include scripts/Makefile.ubsan 1014 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma << 1015 include-$(CONFIG_KASAN) += scripts/Ma << 1016 include-$(CONFIG_KCSAN) += scripts/Ma << 1017 include-$(CONFIG_KMSAN) += scripts/Ma << 1018 include-$(CONFIG_UBSAN) += scripts/Ma << 1019 include-$(CONFIG_KCOV) += scripts/Ma << 1020 include-$(CONFIG_RANDSTRUCT) += scripts/Ma << 1021 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma << 1022 << 1023 include $(addprefix $(srctree)/, $(include-y) << 1024 << 1025 # scripts/Makefile.gcc-plugins is intentional << 1026 # Do not add $(call cc-option,...) below this << 1027 # from the clean source tree, the GCC plugins << 1028 939 1029 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS !! 940 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 1030 KBUILD_CPPFLAGS += $(KCPPFLAGS) 941 KBUILD_CPPFLAGS += $(KCPPFLAGS) 1031 KBUILD_AFLAGS += $(KAFLAGS) 942 KBUILD_AFLAGS += $(KAFLAGS) 1032 KBUILD_CFLAGS += $(KCFLAGS) 943 KBUILD_CFLAGS += $(KCFLAGS) 1033 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) << 1034 944 1035 KBUILD_LDFLAGS_MODULE += --build-id=sha1 !! 945 KBUILD_LDFLAGS_MODULE += --build-id 1036 LDFLAGS_vmlinux += --build-id=sha1 !! 946 LDFLAGS_vmlinux += --build-id 1037 947 1038 KBUILD_LDFLAGS += -z noexecstack 948 KBUILD_LDFLAGS += -z noexecstack 1039 ifeq ($(CONFIG_LD_IS_BFD),y) << 1040 KBUILD_LDFLAGS += $(call ld-option,--no-warn 949 KBUILD_LDFLAGS += $(call ld-option,--no-warn-rwx-segments) 1041 endif << 1042 950 1043 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 951 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1044 LDFLAGS_vmlinux += -X !! 952 LDFLAGS_vmlinux += $(call ld-option, -X,) 1045 endif 953 endif 1046 954 1047 ifeq ($(CONFIG_RELR),y) 955 ifeq ($(CONFIG_RELR),y) 1048 # ld.lld before 15 did not support -z pack-re !! 956 LDFLAGS_vmlinux += --pack-dyn-relocs=relr --use-android-relr-tags 1049 LDFLAGS_vmlinux += $(call ld-option,--pack-dy << 1050 endif 957 endif 1051 958 1052 # We never want expected sections to be place << 1053 # linker. All sections should be explicitly n << 1054 ifdef CONFIG_LD_ORPHAN_WARN << 1055 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG << 1056 endif << 1057 << 1058 # Align the bit size of userspace programs wi << 1059 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta << 1060 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta << 1061 << 1062 # make the checker run with the right archite 959 # make the checker run with the right architecture 1063 CHECKFLAGS += --arch=$(ARCH) 960 CHECKFLAGS += --arch=$(ARCH) 1064 961 1065 # insure the checker run with the right endia 962 # insure the checker run with the right endianness 1066 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- 963 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 1067 964 1068 # the checker needs the correct machine size 965 # the checker needs the correct machine size 1069 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 966 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1070 967 1071 # Default kernel image to build when no speci 968 # Default kernel image to build when no specific target is given. 1072 # KBUILD_IMAGE may be overruled on the comman 969 # KBUILD_IMAGE may be overruled on the command line or 1073 # set in the environment 970 # set in the environment 1074 # Also any assignments in arch/$(ARCH)/Makefi 971 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 1075 # this default value 972 # this default value 1076 export KBUILD_IMAGE ?= vmlinux 973 export KBUILD_IMAGE ?= vmlinux 1077 974 1078 # 975 # 1079 # INSTALL_PATH specifies where to place the u 976 # INSTALL_PATH specifies where to place the updated kernel and system map 1080 # images. Default is /boot, but you can set i 977 # images. Default is /boot, but you can set it to other values 1081 export INSTALL_PATH ?= /boot 978 export INSTALL_PATH ?= /boot 1082 979 1083 # 980 # 1084 # INSTALL_DTBS_PATH specifies a prefix for re 981 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1085 # Like INSTALL_MOD_PATH, it isn't defined in 982 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1086 # an argument if needed. Otherwise it default 983 # an argument if needed. Otherwise it defaults to the kernel install path 1087 # 984 # 1088 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d 985 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1089 986 1090 # 987 # 1091 # INSTALL_MOD_PATH specifies a prefix to MODL 988 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1092 # relocations required by build roots. This 989 # relocations required by build roots. This is not defined in the 1093 # makefile but the argument can be passed to 990 # makefile but the argument can be passed to make if needed. 1094 # 991 # 1095 992 1096 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 993 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1097 export MODLIB 994 export MODLIB 1098 995 1099 PHONY += prepare0 !! 996 # >> 997 # INSTALL_MOD_STRIP, if defined, will cause modules to be >> 998 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then >> 999 # the default option --strip-debug will be used. Otherwise, >> 1000 # INSTALL_MOD_STRIP value will be used as the options to the strip command. >> 1001 >> 1002 ifdef INSTALL_MOD_STRIP >> 1003 ifeq ($(INSTALL_MOD_STRIP),1) >> 1004 mod_strip_cmd = $(STRIP) --strip-debug >> 1005 else >> 1006 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) >> 1007 endif # INSTALL_MOD_STRIP=1 >> 1008 else >> 1009 mod_strip_cmd = true >> 1010 endif # INSTALL_MOD_STRIP >> 1011 export mod_strip_cmd >> 1012 >> 1013 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed >> 1014 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP >> 1015 # or CONFIG_MODULE_COMPRESS_XZ. >> 1016 >> 1017 mod_compress_cmd = true >> 1018 ifdef CONFIG_MODULE_COMPRESS >> 1019 ifdef CONFIG_MODULE_COMPRESS_GZIP >> 1020 mod_compress_cmd = $(KGZIP) -n -f >> 1021 endif # CONFIG_MODULE_COMPRESS_GZIP >> 1022 ifdef CONFIG_MODULE_COMPRESS_XZ >> 1023 mod_compress_cmd = $(XZ) -f >> 1024 endif # CONFIG_MODULE_COMPRESS_XZ >> 1025 endif # CONFIG_MODULE_COMPRESS >> 1026 export mod_compress_cmd 1100 1027 1101 export extmod_prefix = $(if $(KBUILD_EXTMOD), !! 1028 ifdef CONFIG_MODULE_SIG_ALL 1102 export MODORDER := $(extmod_prefix)modules.or !! 1029 $(eval $(call config_filename,MODULE_SIG_KEY)) 1103 export MODULES_NSDEPS := $(extmod_prefix)modu << 1104 1030 1105 ifeq ($(KBUILD_EXTMOD),) !! 1031 mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 >> 1032 else >> 1033 mod_sign_cmd = true >> 1034 endif >> 1035 export mod_sign_cmd 1106 1036 1107 build-dir := . !! 1037 HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf) 1108 clean-dirs := $(sort . Documentation \ << 1109 $(patsubst %/,%,$(filter << 1110 $(drivers-) $(libs-)) << 1111 << 1112 export ARCH_CORE := $(core-y) << 1113 export ARCH_LIB := $(filter %/, $(lib << 1114 export ARCH_DRIVERS := $(drivers-y) $(dri << 1115 # Externally visible symbols (used by link-vm << 1116 1038 1117 KBUILD_VMLINUX_OBJS := ./built-in.a !! 1039 ifdef CONFIG_STACK_VALIDATION 1118 ifdef CONFIG_MODULES !! 1040 has_libelf := $(call try-run,\ 1119 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a !! 1041 echo "int main() {}" | $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0) 1120 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib !! 1042 ifeq ($(has_libelf),1) 1121 else !! 1043 objtool_target := tools/objtool FORCE 1122 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, !! 1044 else >> 1045 SKIP_STACK_VALIDATION := 1 >> 1046 export SKIP_STACK_VALIDATION >> 1047 endif 1123 endif 1048 endif 1124 1049 1125 export KBUILD_VMLINUX_LIBS !! 1050 PHONY += prepare0 >> 1051 >> 1052 export MODORDER := $(extmod-prefix)modules.order >> 1053 >> 1054 ifeq ($(KBUILD_EXTMOD),) >> 1055 core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ >> 1056 >> 1057 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ >> 1058 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ >> 1059 $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) >> 1060 >> 1061 vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \ >> 1062 $(patsubst %/,%,$(filter %/, $(init-) $(core-) \ >> 1063 $(drivers-) $(net-) $(libs-) $(virt-)))) >> 1064 >> 1065 build-dirs := $(vmlinux-dirs) >> 1066 clean-dirs := $(vmlinux-alldirs) >> 1067 >> 1068 init-y := $(patsubst %/, %/built-in.a, $(init-y)) >> 1069 core-y := $(patsubst %/, %/built-in.a, $(core-y)) >> 1070 drivers-y := $(patsubst %/, %/built-in.a, $(drivers-y)) >> 1071 net-y := $(patsubst %/, %/built-in.a, $(net-y)) >> 1072 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) >> 1073 libs-y2 := $(patsubst %/, %/built-in.a, $(filter-out %.a, $(libs-y))) >> 1074 virt-y := $(patsubst %/, %/built-in.a, $(virt-y)) >> 1075 >> 1076 # Externally visible symbols (used by link-vmlinux.sh) >> 1077 export KBUILD_VMLINUX_OBJS := $(head-y) $(init-y) $(core-y) $(libs-y2) \ >> 1078 $(drivers-y) $(net-y) $(virt-y) >> 1079 export KBUILD_VMLINUX_LIBS := $(libs-y1) 1126 export KBUILD_LDS := arch/$(SRCARCH) 1080 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds >> 1081 export LDFLAGS_vmlinux >> 1082 # used by scripts/Makefile.package >> 1083 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools) >> 1084 >> 1085 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) 1127 1086 >> 1087 # Recurse until adjust_autoksyms.sh is satisfied >> 1088 PHONY += autoksyms_recursive 1128 ifdef CONFIG_TRIM_UNUSED_KSYMS 1089 ifdef CONFIG_TRIM_UNUSED_KSYMS >> 1090 autoksyms_recursive: descend modules.order >> 1091 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ >> 1092 "$(MAKE) -f $(srctree)/Makefile autoksyms_recursive" >> 1093 endif >> 1094 1129 # For the kernel to actually contain only the 1095 # For the kernel to actually contain only the needed exported symbols, 1130 # we have to build modules as well to determi 1096 # we have to build modules as well to determine what those symbols are. 1131 KBUILD_MODULES := 1 !! 1097 # (this can be evaluated only once include/config/auto.conf has been included) >> 1098 ifdef CONFIG_TRIM_UNUSED_KSYMS >> 1099 KBUILD_MODULES := 1 1132 endif 1100 endif 1133 1101 1134 # '$(AR) mPi' needs 'T' to workaround the bug !! 1102 autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) 1135 quiet_cmd_ar_vmlinux.a = AR $@ << 1136 cmd_ar_vmlinux.a = \ << 1137 rm -f $@; \ << 1138 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS << 1139 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) << 1140 << 1141 targets += vmlinux.a << 1142 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea << 1143 $(call if_changed,ar_vmlinux.a) << 1144 << 1145 PHONY += vmlinux_o << 1146 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) << 1147 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1148 1103 1149 vmlinux.o modules.builtin.modinfo modules.bui !! 1104 $(autoksyms_h): 1150 @: !! 1105 $(Q)mkdir -p $(dir $@) >> 1106 $(Q)touch $@ >> 1107 >> 1108 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) >> 1109 >> 1110 # Final link of vmlinux with optional arch pass after final link >> 1111 cmd_link-vmlinux = \ >> 1112 $(CONFIG_SHELL) $< $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_vmlinux) ; \ >> 1113 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) >> 1114 >> 1115 vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE >> 1116 +$(call if_changed,link-vmlinux) 1151 1117 1152 PHONY += vmlinux !! 1118 targets := vmlinux 1153 # LDFLAGS_vmlinux in the top Makefile defines << 1154 # not for decompressors. LDFLAGS_vmlinux in a << 1155 # unrelated; the decompressors just happen to << 1156 # arch/*/boot/compressed/vmlinux. << 1157 # Export LDFLAGS_vmlinux only to scripts/Make << 1158 # << 1159 # _LDFLAGS_vmlinux is a workaround for the 'p << 1160 # https://savannah.gnu.org/bugs/?61463 << 1161 # For Make > 4.4, the following simple code w << 1162 # vmlinux: private export LDFLAGS_vmlinux := << 1163 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG << 1164 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ << 1165 vmlinux: vmlinux.o $(KBUILD_LDS) modpost << 1166 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1167 1119 1168 # The actual objects are generated when desce 1120 # The actual objects are generated when descending, 1169 # make sure no implicit rule kicks in 1121 # make sure no implicit rule kicks in 1170 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 1122 $(sort $(vmlinux-deps)): descend ; 1171 1123 1172 ifeq ($(origin KERNELRELEASE),file) !! 1124 filechk_kernel.release = \ 1173 filechk_kernel.release = $(srctree)/scripts/s !! 1125 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1174 else << 1175 filechk_kernel.release = echo $(KERNELRELEASE << 1176 endif << 1177 1126 1178 # Store (new) KERNELRELEASE string in include 1127 # Store (new) KERNELRELEASE string in include/config/kernel.release 1179 include/config/kernel.release: FORCE 1128 include/config/kernel.release: FORCE 1180 $(call filechk,kernel.release) 1129 $(call filechk,kernel.release) 1181 1130 1182 # Additional helpers built in scripts/ 1131 # Additional helpers built in scripts/ 1183 # Carefully list dependencies so we do not tr 1132 # Carefully list dependencies so we do not try to build scripts twice 1184 # in parallel 1133 # in parallel 1185 PHONY += scripts 1134 PHONY += scripts 1186 scripts: scripts_basic scripts_dtc 1135 scripts: scripts_basic scripts_dtc 1187 $(Q)$(MAKE) $(build)=$(@) 1136 $(Q)$(MAKE) $(build)=$(@) 1188 1137 1189 # Things we need to do before we recursively 1138 # Things we need to do before we recursively start building the kernel 1190 # or the modules are listed in "prepare". 1139 # or the modules are listed in "prepare". 1191 # A multi level approach is used. prepareN is 1140 # A multi level approach is used. prepareN is processed before prepareN-1. 1192 # archprepare is used in arch Makefiles and w 1141 # archprepare is used in arch Makefiles and when processed asm symlink, 1193 # version.h and scripts_basic is processed / 1142 # version.h and scripts_basic is processed / created. 1194 1143 1195 PHONY += prepare archprepare 1144 PHONY += prepare archprepare 1196 1145 1197 archprepare: outputmakefile archheaders archs 1146 archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \ 1198 asm-generic $(version_h) include/gene !! 1147 asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h 1199 include/generated/compile.h include/g << 1200 1148 1201 prepare0: archprepare 1149 prepare0: archprepare 1202 $(Q)$(MAKE) $(build)=scripts/mod 1150 $(Q)$(MAKE) $(build)=scripts/mod 1203 $(Q)$(MAKE) $(build)=. prepare !! 1151 $(Q)$(MAKE) $(build)=. 1204 1152 1205 # All the preparing.. 1153 # All the preparing.. 1206 prepare: prepare0 !! 1154 prepare: prepare0 prepare-objtool 1207 ifdef CONFIG_RUST << 1208 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1209 $(Q)$(MAKE) $(build)=rust << 1210 endif << 1211 << 1212 PHONY += remove-stale-files << 1213 remove-stale-files: << 1214 $(Q)$(srctree)/scripts/remove-stale-f << 1215 1155 1216 # Support for using generic headers in asm-ge 1156 # Support for using generic headers in asm-generic 1217 asm-generic := -f $(srctree)/scripts/Makefile !! 1157 asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj 1218 1158 1219 PHONY += asm-generic uapi-asm-generic 1159 PHONY += asm-generic uapi-asm-generic 1220 asm-generic: uapi-asm-generic 1160 asm-generic: uapi-asm-generic 1221 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1161 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \ 1222 generic=include/asm-generic 1162 generic=include/asm-generic 1223 uapi-asm-generic: 1163 uapi-asm-generic: 1224 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1164 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \ 1225 generic=include/uapi/asm-generic 1165 generic=include/uapi/asm-generic 1226 1166 >> 1167 PHONY += prepare-objtool >> 1168 prepare-objtool: $(objtool_target) >> 1169 ifeq ($(SKIP_STACK_VALIDATION),1) >> 1170 ifdef CONFIG_UNWINDER_ORC >> 1171 @echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1172 @false >> 1173 else >> 1174 @echo "warning: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1175 endif >> 1176 endif >> 1177 1227 # Generate some files 1178 # Generate some files 1228 # ------------------------------------------- 1179 # --------------------------------------------------------------------------- 1229 1180 1230 # KERNELRELEASE can change from a few differe 1181 # KERNELRELEASE can change from a few different places, meaning version.h 1231 # needs to be updated, so this check is force 1182 # needs to be updated, so this check is forced on all builds 1232 1183 1233 uts_len := 64 1184 uts_len := 64 1234 define filechk_utsrelease.h 1185 define filechk_utsrelease.h 1235 if [ `echo -n "$(KERNELRELEASE)" | wc 1186 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1236 echo '"$(KERNELRELEASE)" exceeds $( 1187 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1237 exit 1; 1188 exit 1; \ 1238 fi; 1189 fi; \ 1239 echo \#define UTS_RELEASE \"$(KERNELR 1190 echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" 1240 endef 1191 endef 1241 1192 1242 define filechk_version.h 1193 define filechk_version.h 1243 if [ $(SUBLEVEL) -gt 255 ]; then 1194 if [ $(SUBLEVEL) -gt 255 ]; then \ 1244 echo \#define LINUX_VERSION_C 1195 echo \#define LINUX_VERSION_CODE $(shell \ 1245 expr $(VERSION) \* 65536 + $( 1196 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + 255); \ 1246 else 1197 else \ 1247 echo \#define LINUX_VERSION_C 1198 echo \#define LINUX_VERSION_CODE $(shell \ 1248 expr $(VERSION) \* 65536 + $( 1199 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 1249 fi; 1200 fi; \ 1250 echo '#define KERNEL_VERSION(a,b,c) ( 1201 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + \ 1251 ((c) > 255 ? 255 : (c)))'; !! 1202 ((c) > 255 ? 255 : (c)))' 1252 echo \#define LINUX_VERSION_MAJOR $(V << 1253 echo \#define LINUX_VERSION_PATCHLEVE << 1254 echo \#define LINUX_VERSION_SUBLEVEL << 1255 endef 1203 endef 1256 1204 1257 $(version_h): private PATCHLEVEL := $(or $(PA !! 1205 $(version_h): PATCHLEVEL := $(if $(PATCHLEVEL), $(PATCHLEVEL), 0) 1258 $(version_h): private SUBLEVEL := $(or $(SUBL !! 1206 $(version_h): SUBLEVEL := $(if $(SUBLEVEL), $(SUBLEVEL), 0) 1259 $(version_h): FORCE 1207 $(version_h): FORCE 1260 $(call filechk,version.h) 1208 $(call filechk,version.h) >> 1209 $(Q)rm -f $(old_version_h) 1261 1210 1262 include/generated/utsrelease.h: include/confi 1211 include/generated/utsrelease.h: include/config/kernel.release FORCE 1263 $(call filechk,utsrelease.h) 1212 $(call filechk,utsrelease.h) 1264 1213 1265 filechk_compile.h = $(srctree)/scripts/mkcomp << 1266 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION << 1267 << 1268 include/generated/compile.h: FORCE << 1269 $(call filechk,compile.h) << 1270 << 1271 PHONY += headerdep 1214 PHONY += headerdep 1272 headerdep: 1215 headerdep: 1273 $(Q)find $(srctree)/include/ -name '* 1216 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1274 $(srctree)/scripts/headerdep.pl -I$(s 1217 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1275 1218 1276 # ------------------------------------------- 1219 # --------------------------------------------------------------------------- 1277 # Kernel headers 1220 # Kernel headers 1278 1221 1279 #Default location for installed headers 1222 #Default location for installed headers 1280 export INSTALL_HDR_PATH = $(objtree)/usr 1223 export INSTALL_HDR_PATH = $(objtree)/usr 1281 1224 1282 quiet_cmd_headers_install = INSTALL $(INSTALL 1225 quiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include 1283 cmd_headers_install = \ 1226 cmd_headers_install = \ 1284 mkdir -p $(INSTALL_HDR_PATH); \ 1227 mkdir -p $(INSTALL_HDR_PATH); \ 1285 rsync -mrl --include='*/' --include=' 1228 rsync -mrl --include='*/' --include='*\.h' --exclude='*' \ 1286 usr/include $(INSTALL_HDR_PATH) 1229 usr/include $(INSTALL_HDR_PATH) 1287 1230 1288 PHONY += headers_install 1231 PHONY += headers_install 1289 headers_install: headers 1232 headers_install: headers 1290 $(call cmd,headers_install) 1233 $(call cmd,headers_install) 1291 1234 1292 PHONY += archheaders archscripts 1235 PHONY += archheaders archscripts 1293 1236 1294 hdr-inst := -f $(srctree)/scripts/Makefile.he 1237 hdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj 1295 1238 1296 PHONY += headers 1239 PHONY += headers 1297 headers: $(version_h) scripts_unifdef uapi-as 1240 headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts 1298 $(if $(filter um, $(SRCARCH)), $(erro !! 1241 $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ >> 1242 $(error Headers not exportable for the $(SRCARCH) architecture)) 1299 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1243 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1300 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC 1244 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi 1301 1245 >> 1246 # Deprecated. It is no-op now. >> 1247 PHONY += headers_check >> 1248 headers_check: >> 1249 @: >> 1250 1302 ifdef CONFIG_HEADERS_INSTALL 1251 ifdef CONFIG_HEADERS_INSTALL 1303 prepare: headers 1252 prepare: headers 1304 endif 1253 endif 1305 1254 1306 PHONY += scripts_unifdef 1255 PHONY += scripts_unifdef 1307 scripts_unifdef: scripts_basic 1256 scripts_unifdef: scripts_basic 1308 $(Q)$(MAKE) $(build)=scripts scripts/ 1257 $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1309 1258 1310 # ------------------------------------------- 1259 # --------------------------------------------------------------------------- 1311 # Install << 1312 << 1313 # Many distributions have the custom install << 1314 # If DKMS is installed, 'make install' will e << 1315 # to this Makefile to build and install exter << 1316 # Cancel sub_make_done so that options such a << 1317 << 1318 quiet_cmd_install = INSTALL $(INSTALL_PATH) << 1319 cmd_install = unset sub_make_done; $(sr << 1320 << 1321 # ------------------------------------------- << 1322 # vDSO install << 1323 << 1324 PHONY += vdso_install << 1325 vdso_install: export INSTALL_FILES = $(vdso-i << 1326 vdso_install: << 1327 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1328 << 1329 # ------------------------------------------- << 1330 # Tools << 1331 << 1332 ifdef CONFIG_OBJTOOL << 1333 prepare: tools/objtool << 1334 endif << 1335 << 1336 ifdef CONFIG_BPF << 1337 ifdef CONFIG_DEBUG_INFO_BTF << 1338 prepare: tools/bpf/resolve_btfids << 1339 endif << 1340 endif << 1341 << 1342 # The tools build system is not a part of Kbu << 1343 # its own unique issues. If you need to integ << 1344 # please consider locating that tool outside << 1345 # standard Kbuild "hostprogs" syntax instead << 1346 # here. See Documentation/kbuild/makefiles.rs << 1347 << 1348 PHONY += resolve_btfids_clean << 1349 << 1350 resolve_btfids_O = $(abspath $(objtree))/tool << 1351 << 1352 # tools/bpf/resolve_btfids directory might no << 1353 # in output directory, skip its clean in that << 1354 resolve_btfids_clean: << 1355 ifneq ($(wildcard $(resolve_btfids_O)),) << 1356 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ << 1357 endif << 1358 << 1359 # Clear a bunch of variables before executing << 1360 ifeq ($(quiet),silent_) << 1361 tools_silent=s << 1362 endif << 1363 << 1364 tools/: FORCE << 1365 $(Q)mkdir -p $(objtree)/tools << 1366 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1367 << 1368 tools/%: FORCE << 1369 $(Q)mkdir -p $(objtree)/tools << 1370 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1371 << 1372 # ------------------------------------------- << 1373 # Kernel selftest 1260 # Kernel selftest 1374 1261 1375 PHONY += kselftest 1262 PHONY += kselftest 1376 kselftest: headers !! 1263 kselftest: 1377 $(Q)$(MAKE) -C $(srctree)/tools/testi 1264 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 1378 1265 1379 kselftest-%: headers FORCE !! 1266 kselftest-%: FORCE 1380 $(Q)$(MAKE) -C $(srctree)/tools/testi 1267 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $* 1381 1268 1382 PHONY += kselftest-merge 1269 PHONY += kselftest-merge 1383 kselftest-merge: 1270 kselftest-merge: 1384 $(if $(wildcard $(objtree)/.config),, 1271 $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1385 $(Q)find $(srctree)/tools/testing/sel !! 1272 $(Q)find $(srctree)/tools/testing/selftests -name config | \ 1386 xargs $(srctree)/scripts/kcon !! 1273 xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config 1387 $(Q)$(MAKE) -f $(srctree)/Makefile ol 1274 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1388 1275 1389 # ------------------------------------------- 1276 # --------------------------------------------------------------------------- 1390 # Devicetree files 1277 # Devicetree files 1391 1278 1392 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ 1279 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 1393 dtstree := arch/$(SRCARCH)/boot/dts 1280 dtstree := arch/$(SRCARCH)/boot/dts 1394 endif 1281 endif 1395 1282 1396 ifneq ($(dtstree),) 1283 ifneq ($(dtstree),) 1397 1284 1398 %.dtb: dtbs_prepare !! 1285 %.dtb: include/config/kernel.release scripts_dtc 1399 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1400 << 1401 %.dtbo: dtbs_prepare << 1402 $(Q)$(MAKE) $(build)=$(dtstree) $(dts 1286 $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1403 1287 1404 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ !! 1288 PHONY += dtbs dtbs_install dtbs_check 1405 dtbs: dtbs_prepare !! 1289 dtbs: include/config/kernel.release scripts_dtc 1406 $(Q)$(MAKE) $(build)=$(dtstree) need- !! 1290 $(Q)$(MAKE) $(build)=$(dtstree) 1407 << 1408 # include/config/kernel.release is actually n << 1409 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) << 1410 # dtbs_install depend on it as dtbs_install m << 1411 dtbs_prepare: include/config/kernel.release s << 1412 1291 1413 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), 1292 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),) 1414 export CHECK_DTBS=y !! 1293 dtbs: dt_binding_check 1415 endif << 1416 << 1417 ifneq ($(CHECK_DTBS),) << 1418 dtbs_prepare: dt_binding_schemas << 1419 endif 1294 endif 1420 1295 >> 1296 dtbs_check: export CHECK_DTBS=1 1421 dtbs_check: dtbs 1297 dtbs_check: dtbs 1422 1298 1423 dtbs_install: 1299 dtbs_install: 1424 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1300 $(Q)$(MAKE) $(dtbinst)=$(dtstree) 1425 1301 1426 ifdef CONFIG_OF_EARLY_FLATTREE 1302 ifdef CONFIG_OF_EARLY_FLATTREE 1427 all: dtbs 1303 all: dtbs 1428 endif 1304 endif 1429 1305 1430 endif 1306 endif 1431 1307 1432 PHONY += scripts_dtc 1308 PHONY += scripts_dtc 1433 scripts_dtc: scripts_basic 1309 scripts_dtc: scripts_basic 1434 $(Q)$(MAKE) $(build)=scripts/dtc 1310 $(Q)$(MAKE) $(build)=scripts/dtc 1435 1311 1436 ifneq ($(filter dt_binding_check, $(MAKECMDGO !! 1312 PHONY += dt_binding_check 1437 export CHECK_DTBS=y !! 1313 dt_binding_check: scripts_dtc 1438 endif << 1439 << 1440 PHONY += dt_binding_check dt_binding_schemas << 1441 dt_binding_check: dt_binding_schemas scripts_ << 1442 $(Q)$(MAKE) $(build)=Documentation/de << 1443 << 1444 dt_binding_schemas: << 1445 $(Q)$(MAKE) $(build)=Documentation/de 1314 $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings 1446 1315 1447 PHONY += dt_compatible_check << 1448 dt_compatible_check: dt_binding_schemas << 1449 $(Q)$(MAKE) $(build)=Documentation/de << 1450 << 1451 # ------------------------------------------- 1316 # --------------------------------------------------------------------------- 1452 # Modules 1317 # Modules 1453 1318 1454 ifdef CONFIG_MODULES 1319 ifdef CONFIG_MODULES 1455 1320 1456 # By default, build modules as well 1321 # By default, build modules as well 1457 1322 1458 all: modules 1323 all: modules 1459 1324 1460 # When we're building modules with modversion 1325 # When we're building modules with modversions, we need to consider 1461 # the built-in objects during the descend as 1326 # the built-in objects during the descend as well, in order to 1462 # make sure the checksums are up to date befo 1327 # make sure the checksums are up to date before we record them. 1463 ifdef CONFIG_MODVERSIONS 1328 ifdef CONFIG_MODVERSIONS 1464 KBUILD_BUILTIN := 1 1329 KBUILD_BUILTIN := 1 1465 endif 1330 endif 1466 1331 1467 # Build modules 1332 # Build modules 1468 # 1333 # >> 1334 # A module can be listed more than once in obj-m resulting in >> 1335 # duplicate lines in modules.order files. Those are removed >> 1336 # using awk while concatenating to the final file. 1469 1337 1470 # *.ko are usually independent of vmlinux, bu !! 1338 PHONY += modules 1471 # is an exception. !! 1339 modules: $(if $(KBUILD_BUILTIN),vmlinux) modules.order modules.builtin 1472 ifdef CONFIG_DEBUG_INFO_BTF_MODULES !! 1340 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1473 KBUILD_BUILTIN := 1 !! 1341 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh 1474 modules: vmlinux !! 1342 1475 endif !! 1343 modules.order: descend >> 1344 $(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(build-dirs)) > $@ >> 1345 >> 1346 modbuiltin-dirs := $(addprefix _modbuiltin_, $(build-dirs)) 1476 1347 1477 modules: modules_prepare !! 1348 modules.builtin: $(modbuiltin-dirs) >> 1349 $(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(build-dirs)) > $@ >> 1350 >> 1351 PHONY += $(modbuiltin-dirs) >> 1352 # tristate.conf is not included from this Makefile. Add it as a prerequisite >> 1353 # here to make it self-healing in case somebody accidentally removes it. >> 1354 $(modbuiltin-dirs): include/config/tristate.conf >> 1355 $(Q)$(MAKE) $(modbuiltin)=$(patsubst _modbuiltin_%,%,$@) 1478 1356 1479 # Target to prepare building external modules 1357 # Target to prepare building external modules >> 1358 PHONY += modules_prepare 1480 modules_prepare: prepare 1359 modules_prepare: prepare 1481 $(Q)$(MAKE) $(build)=scripts scripts/ !! 1360 >> 1361 # Target to install modules >> 1362 PHONY += modules_install >> 1363 modules_install: _modinst_ _modinst_post >> 1364 >> 1365 PHONY += _modinst_ >> 1366 _modinst_: >> 1367 @rm -rf $(MODLIB)/kernel >> 1368 @rm -f $(MODLIB)/source >> 1369 @mkdir -p $(MODLIB)/kernel >> 1370 @ln -s $(abspath $(srctree)) $(MODLIB)/source >> 1371 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ >> 1372 rm -f $(MODLIB)/build ; \ >> 1373 ln -s $(CURDIR) $(MODLIB)/build ; \ >> 1374 fi >> 1375 @sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order >> 1376 @sed 's:^:kernel/:' modules.builtin > $(MODLIB)/modules.builtin >> 1377 @cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/ >> 1378 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1379 >> 1380 # This depmod is only for convenience to give the initial >> 1381 # boot a modules.dep even before / is mounted read-write. However the >> 1382 # boot script depmod is the master version. >> 1383 PHONY += _modinst_post >> 1384 _modinst_post: _modinst_ >> 1385 $(call cmd,depmod) >> 1386 >> 1387 ifeq ($(CONFIG_MODULE_SIG), y) >> 1388 PHONY += modules_sign >> 1389 modules_sign: >> 1390 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign >> 1391 endif >> 1392 >> 1393 else # CONFIG_MODULES >> 1394 >> 1395 # Modules not configured >> 1396 # --------------------------------------------------------------------------- >> 1397 >> 1398 PHONY += modules modules_install >> 1399 modules modules_install: >> 1400 @echo >&2 >> 1401 @echo >&2 "The present kernel configuration has modules disabled." >> 1402 @echo >&2 "Type 'make config' and enable loadable module support." >> 1403 @echo >&2 "Then build a kernel with module support enabled." >> 1404 @echo >&2 >> 1405 @exit 1 1482 1406 1483 endif # CONFIG_MODULES 1407 endif # CONFIG_MODULES 1484 1408 1485 ### 1409 ### 1486 # Cleaning is done on three levels. 1410 # Cleaning is done on three levels. 1487 # make clean Delete most generated files 1411 # make clean Delete most generated files 1488 # Leave enough to build extern 1412 # Leave enough to build external modules 1489 # make mrproper Delete the current configura 1413 # make mrproper Delete the current configuration, and all generated files 1490 # make distclean Remove editor backup files, 1414 # make distclean Remove editor backup files, patch leftover files and the like 1491 1415 1492 # Directories & files removed with 'make clea 1416 # Directories & files removed with 'make clean' 1493 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1417 CLEAN_DIRS += include/ksym 1494 modules.builtin modules.builti !! 1418 CLEAN_FILES += modules.builtin.modinfo 1495 modules.builtin.ranges vmlinux << 1496 compile_commands.json rust/tes << 1497 rust-project.json .vmlinux.obj << 1498 1419 1499 # Directories & files removed with 'make mrpr 1420 # Directories & files removed with 'make mrproper' 1500 MRPROPER_FILES += include/config include/gene !! 1421 MRPROPER_DIRS += include/config include/generated \ 1501 arch/$(SRCARCH)/include/gen !! 1422 arch/$(SRCARCH)/include/generated .tmp_objdiff \ 1502 debian snap tar-install PKG !! 1423 debian/ snap/ tar-install/ 1503 .config .config.old .versio !! 1424 MRPROPER_FILES += .config .config.old .version \ 1504 Module.symvers \ 1425 Module.symvers \ 1505 certs/signing_key.pem \ !! 1426 signing_key.pem signing_key.priv signing_key.x509 \ 1506 certs/x509.genkey \ !! 1427 x509.genkey extra_certificates signing_key.x509.keyid \ 1507 vmlinux-gdb.py \ !! 1428 signing_key.x509.signer vmlinux-gdb.py \ 1508 rpmbuild \ !! 1429 *.spec 1509 rust/libmacros.so !! 1430 >> 1431 # Directories & files removed with 'make distclean' >> 1432 DISTCLEAN_DIRS += >> 1433 DISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS 1510 1434 1511 # clean - Delete most, but leave enough to bu 1435 # clean - Delete most, but leave enough to build external modules 1512 # 1436 # 1513 clean: private rm-files := $(CLEAN_FILES) !! 1437 clean: rm-dirs := $(CLEAN_DIRS) >> 1438 clean: rm-files := $(CLEAN_FILES) 1514 1439 1515 PHONY += archclean vmlinuxclean 1440 PHONY += archclean vmlinuxclean 1516 1441 1517 vmlinuxclean: 1442 vmlinuxclean: 1518 $(Q)$(CONFIG_SHELL) $(srctree)/script 1443 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1519 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f 1444 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1520 1445 1521 clean: archclean vmlinuxclean resolve_btfids_ !! 1446 clean: archclean vmlinuxclean 1522 1447 1523 # mrproper - Delete all generated files, incl 1448 # mrproper - Delete all generated files, including .config 1524 # 1449 # 1525 mrproper: private rm-files := $(MRPROPER_FILE !! 1450 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) >> 1451 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1526 mrproper-dirs := $(addprefix _mrproper_, 1452 mrproper-dirs := $(addprefix _mrproper_,scripts) 1527 1453 1528 PHONY += $(mrproper-dirs) mrproper 1454 PHONY += $(mrproper-dirs) mrproper 1529 $(mrproper-dirs): 1455 $(mrproper-dirs): 1530 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1456 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1531 1457 1532 mrproper: clean $(mrproper-dirs) 1458 mrproper: clean $(mrproper-dirs) >> 1459 $(call cmd,rmdirs) 1533 $(call cmd,rmfiles) 1460 $(call cmd,rmfiles) 1534 @find . $(RCS_FIND_IGNORE) \ << 1535 \( -name '*.rmeta' \) \ << 1536 -type f -print | xargs rm -f << 1537 1461 1538 # distclean 1462 # distclean 1539 # 1463 # >> 1464 distclean: rm-dirs := $(wildcard $(DISTCLEAN_DIRS)) >> 1465 distclean: rm-files := $(wildcard $(DISTCLEAN_FILES)) >> 1466 1540 PHONY += distclean 1467 PHONY += distclean 1541 1468 1542 distclean: mrproper 1469 distclean: mrproper 1543 @find . $(RCS_FIND_IGNORE) \ !! 1470 $(call cmd,rmdirs) >> 1471 $(call cmd,rmfiles) >> 1472 @find $(srctree) $(RCS_FIND_IGNORE) \ 1544 \( -name '*.orig' -o -name '* 1473 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1545 -o -name '*.bak' -o -name '#* 1474 -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1546 -o -name 'core' -o -name tags !! 1475 -o -name 'core' \) \ 1547 -o -name GPATH -o -name GRTAG << 1548 -type f -print | xargs rm -f 1476 -type f -print | xargs rm -f 1549 1477 1550 1478 1551 # Packaging of the kernel to various formats 1479 # Packaging of the kernel to various formats 1552 # ------------------------------------------- 1480 # --------------------------------------------------------------------------- 1553 1481 1554 %src-pkg: FORCE 1482 %src-pkg: FORCE 1555 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1483 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1556 %pkg: include/config/kernel.release FORCE 1484 %pkg: include/config/kernel.release FORCE 1557 $(Q)$(MAKE) -f $(srctree)/scripts/Mak 1485 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1558 1486 1559 # Brief documentation of the typical targets 1487 # Brief documentation of the typical targets used 1560 # ------------------------------------------- 1488 # --------------------------------------------------------------------------- 1561 1489 1562 boards := $(wildcard $(srctree)/arch/$(SRCARC 1490 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1563 boards := $(sort $(notdir $(boards))) 1491 boards := $(sort $(notdir $(boards))) 1564 board-dirs := $(dir $(wildcard $(srctree)/arc 1492 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1565 board-dirs := $(sort $(notdir $(board-dirs:/= 1493 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1566 1494 1567 PHONY += help 1495 PHONY += help 1568 help: 1496 help: 1569 @echo 'Cleaning targets:' 1497 @echo 'Cleaning targets:' 1570 @echo ' clean - Remove mo 1498 @echo ' clean - Remove most generated files but keep the config and' 1571 @echo ' enough bu 1499 @echo ' enough build support to build external modules' 1572 @echo ' mrproper - Remove al 1500 @echo ' mrproper - Remove all generated files + config + various backup files' 1573 @echo ' distclean - mrproper 1501 @echo ' distclean - mrproper + remove editor backup and patch files' 1574 @echo '' 1502 @echo '' >> 1503 @echo 'Configuration targets:' 1575 @$(MAKE) -f $(srctree)/scripts/kconfi 1504 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1576 @echo '' 1505 @echo '' 1577 @echo 'Other generic targets:' 1506 @echo 'Other generic targets:' 1578 @echo ' all - Build all 1507 @echo ' all - Build all targets marked with [*]' 1579 @echo '* vmlinux - Build the 1508 @echo '* vmlinux - Build the bare kernel' 1580 @echo '* modules - Build all 1509 @echo '* modules - Build all modules' 1581 @echo ' modules_install - Install a 1510 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1582 @echo ' vdso_install - Install u << 1583 @echo ' dir/ - Build all 1511 @echo ' dir/ - Build all files in dir and below' 1584 @echo ' dir/file.[ois] - Build spe 1512 @echo ' dir/file.[ois] - Build specified target only' 1585 @echo ' dir/file.ll - Build the 1513 @echo ' dir/file.ll - Build the LLVM assembly file' 1586 @echo ' (requires 1514 @echo ' (requires compiler support for LLVM assembly generation)' 1587 @echo ' dir/file.lst - Build spe 1515 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1588 @echo ' (requires 1516 @echo ' (requires a recent binutils and recent build (System.map))' 1589 @echo ' dir/file.ko - Build mod 1517 @echo ' dir/file.ko - Build module including final link' 1590 @echo ' modules_prepare - Set up fo 1518 @echo ' modules_prepare - Set up for building external modules' 1591 @echo ' tags/TAGS - Generate 1519 @echo ' tags/TAGS - Generate tags file for editors' 1592 @echo ' cscope - Generate 1520 @echo ' cscope - Generate cscope index' 1593 @echo ' gtags - Generate 1521 @echo ' gtags - Generate GNU GLOBAL index' 1594 @echo ' kernelrelease - Output th 1522 @echo ' kernelrelease - Output the release version string (use with make -s)' 1595 @echo ' kernelversion - Output th 1523 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1596 @echo ' image_name - Output th 1524 @echo ' image_name - Output the image name (use with make -s)' 1597 @echo ' headers_install - Install s 1525 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1598 echo ' (default: 1526 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1599 echo '' 1527 echo '' 1600 @echo 'Static analysers:' 1528 @echo 'Static analysers:' 1601 @echo ' checkstack - Generate !! 1529 @echo ' checkstack - Generate a list of stack hogs' 1602 @echo ' with a st !! 1530 @echo ' namespacecheck - Name space analysis on compiled kernel' 1603 @echo ' versioncheck - Sanity ch 1531 @echo ' versioncheck - Sanity check on version.h usage' 1604 @echo ' includecheck - Check for 1532 @echo ' includecheck - Check for duplicate included header files' 1605 @echo ' export_report - List the 1533 @echo ' export_report - List the usages of all exported symbols' 1606 @echo ' headerdep - Detect in 1534 @echo ' headerdep - Detect inclusion cycles in headers' 1607 @echo ' coccicheck - Check wit 1535 @echo ' coccicheck - Check with Coccinelle' 1608 @echo ' clang-analyzer - Check wit << 1609 @echo ' clang-tidy - Check wit << 1610 @echo '' 1536 @echo '' 1611 @echo 'Tools:' 1537 @echo 'Tools:' 1612 @echo ' nsdeps - Generate 1538 @echo ' nsdeps - Generate missing symbol namespace dependencies' 1613 @echo '' 1539 @echo '' 1614 @echo 'Kernel selftest:' 1540 @echo 'Kernel selftest:' 1615 @echo ' kselftest - Build a !! 1541 @echo ' kselftest - Build and run kernel selftest (run as root)' 1616 @echo ' Build, !! 1542 @echo ' Build, install, and boot kernel before' 1617 @echo ' running !! 1543 @echo ' running kselftest on it' 1618 @echo ' Run as !! 1544 @echo ' kselftest-clean - Remove all generated kselftest files' 1619 @echo ' kselftest-all - Build k !! 1545 @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existing' 1620 @echo ' kselftest-install - Build a !! 1546 @echo ' .config.' 1621 @echo ' kselftest-clean - Remove << 1622 @echo ' kselftest-merge - Merge a << 1623 @echo ' kselfte << 1624 @echo '' << 1625 @echo 'Rust targets:' << 1626 @echo ' rustavailable - Checks wh << 1627 @echo ' available << 1628 @echo ' rustfmt - Reformat << 1629 @echo ' rustfmtcheck - Checks if << 1630 @echo ' is format << 1631 @echo ' rustdoc - Generate << 1632 @echo ' (requires << 1633 @echo ' rusttest - Runs the << 1634 @echo ' (requires << 1635 @echo ' rust-analyzer - Generate << 1636 @echo ' (requires << 1637 @echo ' dir/file.[os] - Build spe << 1638 @echo ' dir/file.rsi - Build mac << 1639 @echo ' Run with << 1640 @echo ' The outpu << 1641 @echo ' dir/file.ll - Build the << 1642 @echo '' 1547 @echo '' 1643 @$(if $(dtstree), \ 1548 @$(if $(dtstree), \ 1644 echo 'Devicetree:'; \ 1549 echo 'Devicetree:'; \ 1645 echo '* dtbs - !! 1550 echo '* dtbs - Build device tree blobs for enabled boards'; \ 1646 echo ' dtbs_install - !! 1551 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ 1647 echo ' dt_binding_check - !! 1552 echo ' dt_binding_check - Validate device tree binding documents'; \ 1648 echo ' dt_binding_schemas - !! 1553 echo ' dtbs_check - Validate device tree source files';\ 1649 echo ' dtbs_check - << 1650 echo '') 1554 echo '') 1651 1555 1652 @echo 'Userspace tools targets:' 1556 @echo 'Userspace tools targets:' 1653 @echo ' use "make tools/help"' 1557 @echo ' use "make tools/help"' 1654 @echo ' or "cd tools; make help"' 1558 @echo ' or "cd tools; make help"' 1655 @echo '' 1559 @echo '' 1656 @echo 'Kernel packaging:' 1560 @echo 'Kernel packaging:' 1657 @$(MAKE) -f $(srctree)/scripts/Makefi 1561 @$(MAKE) -f $(srctree)/scripts/Makefile.package help 1658 @echo '' 1562 @echo '' 1659 @echo 'Documentation targets:' 1563 @echo 'Documentation targets:' 1660 @$(MAKE) -f $(srctree)/Documentation/ 1564 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1661 @echo '' 1565 @echo '' 1662 @echo 'Architecture-specific targets !! 1566 @echo 'Architecture specific targets ($(SRCARCH)):' 1663 @$(or $(archhelp),\ !! 1567 @$(if $(archhelp),$(archhelp),\ 1664 echo ' No architecture-speci !! 1568 echo ' No architecture specific help defined for $(SRCARCH)') 1665 @echo '' 1569 @echo '' 1666 @$(if $(boards), \ 1570 @$(if $(boards), \ 1667 $(foreach b, $(boards), \ 1571 $(foreach b, $(boards), \ 1668 printf " %-27s - Build for % !! 1572 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1669 echo '') 1573 echo '') 1670 @$(if $(board-dirs), \ 1574 @$(if $(board-dirs), \ 1671 $(foreach b, $(board-dirs), \ 1575 $(foreach b, $(board-dirs), \ 1672 printf " %-16s - Show %s-spe 1576 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1673 printf " %-16s - Show all of 1577 printf " %-16s - Show all of the above\\n" help-boards; \ 1674 echo '') 1578 echo '') 1675 1579 1676 @echo ' make V=n [targets] 1: ver !! 1580 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1677 @echo ' 2: giv !! 1581 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1678 @echo ' V=1 an << 1679 @echo ' make O=dir [targets] Locate 1582 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1680 @echo ' make C=1 [targets] Check !! 1583 @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)' 1681 @echo ' (spars << 1682 @echo ' make C=2 [targets] Force 1584 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1683 @echo ' make RECORDMCOUNT_WARN=1 [t 1585 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1684 @echo ' make W=n [targets] Enable !! 1586 @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where' 1685 @echo ' 1: warnings w 1587 @echo ' 1: warnings which may be relevant and do not occur too often' 1686 @echo ' 2: warnings w 1588 @echo ' 2: warnings which occur quite often but may still be relevant' 1687 @echo ' 3: more obscu 1589 @echo ' 3: more obscure warnings, can most likely be ignored' 1688 @echo ' c: extra chec << 1689 @echo ' e: warnings a << 1690 @echo ' Multiple leve 1590 @echo ' Multiple levels can be combined with W=12 or W=123' 1691 @$(if $(dtstree), \ << 1692 echo ' make CHECK_DTBS=1 [ta << 1693 echo ' This can be ap << 1694 ) << 1695 @echo '' 1591 @echo '' 1696 @echo 'Execute "make" or "make all" 1592 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1697 @echo 'For further info see the ./RE 1593 @echo 'For further info see the ./README file' 1698 1594 1699 1595 1700 help-board-dirs := $(addprefix help-,$(board- 1596 help-board-dirs := $(addprefix help-,$(board-dirs)) 1701 1597 1702 help-boards: $(help-board-dirs) 1598 help-boards: $(help-board-dirs) 1703 1599 1704 boards-per-dir = $(sort $(notdir $(wildcard $ 1600 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1705 1601 1706 $(help-board-dirs): help-%: 1602 $(help-board-dirs): help-%: 1707 @echo 'Architecture-specific targets !! 1603 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1708 @$(if $(boards-per-dir), \ 1604 @$(if $(boards-per-dir), \ 1709 $(foreach b, $(boards-per-dir 1605 $(foreach b, $(boards-per-dir), \ 1710 printf " %-24s - Build for % 1606 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1711 echo '') 1607 echo '') 1712 1608 1713 1609 1714 # Documentation targets 1610 # Documentation targets 1715 # ------------------------------------------- 1611 # --------------------------------------------------------------------------- 1716 DOC_TARGETS := xmldocs latexdocs pdfdocs html 1612 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1717 linkcheckdocs dochelp refcheck !! 1613 linkcheckdocs dochelp refcheckdocs 1718 PHONY += $(DOC_TARGETS) 1614 PHONY += $(DOC_TARGETS) 1719 $(DOC_TARGETS): 1615 $(DOC_TARGETS): 1720 $(Q)$(MAKE) $(build)=Documentation $@ 1616 $(Q)$(MAKE) $(build)=Documentation $@ 1721 1617 1722 << 1723 # Rust targets << 1724 # ------------------------------------------- << 1725 << 1726 # "Is Rust available?" target << 1727 PHONY += rustavailable << 1728 rustavailable: << 1729 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1730 << 1731 # Documentation target << 1732 # << 1733 # Using the singular to avoid running afoul o << 1734 PHONY += rustdoc << 1735 rustdoc: prepare << 1736 $(Q)$(MAKE) $(build)=rust $@ << 1737 << 1738 # Testing target << 1739 PHONY += rusttest << 1740 rusttest: prepare << 1741 $(Q)$(MAKE) $(build)=rust $@ << 1742 << 1743 # Formatting targets << 1744 PHONY += rustfmt rustfmtcheck << 1745 << 1746 # We skip `rust/alloc` since we want to minim << 1747 # << 1748 # We match using absolute paths since `find` << 1749 # when matching, which is a problem when e.g. << 1750 # We `grep` afterwards in order to remove the << 1751 rustfmt: << 1752 $(Q)find $(abs_srctree) -type f -name << 1753 -o -path $(abs_srctree)/rust/ << 1754 -o -path $(abs_objtree)/rust/ << 1755 | grep -Fv $(abs_srctree)/rus << 1756 | grep -Fv $(abs_objtree)/rus << 1757 | grep -Fv generated \ << 1758 | xargs $(RUSTFMT) $(rustfmt_ << 1759 << 1760 rustfmtcheck: rustfmt_flags = --check << 1761 rustfmtcheck: rustfmt << 1762 << 1763 # Misc 1618 # Misc 1764 # ------------------------------------------- 1619 # --------------------------------------------------------------------------- 1765 1620 1766 PHONY += misc-check << 1767 misc-check: << 1768 $(Q)$(srctree)/scripts/misc-check << 1769 << 1770 all: misc-check << 1771 << 1772 PHONY += scripts_gdb 1621 PHONY += scripts_gdb 1773 scripts_gdb: prepare0 1622 scripts_gdb: prepare0 1774 $(Q)$(MAKE) $(build)=scripts/gdb 1623 $(Q)$(MAKE) $(build)=scripts/gdb 1775 $(Q)ln -fsn $(abspath $(srctree)/scri 1624 $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) 1776 1625 1777 ifdef CONFIG_GDB_SCRIPTS 1626 ifdef CONFIG_GDB_SCRIPTS 1778 all: scripts_gdb 1627 all: scripts_gdb 1779 endif 1628 endif 1780 1629 1781 else # KBUILD_EXTMOD 1630 else # KBUILD_EXTMOD 1782 1631 1783 filechk_kernel.release = echo $(KERNELRELEASE << 1784 << 1785 ### 1632 ### 1786 # External module support. 1633 # External module support. 1787 # When building external modules the kernel u 1634 # When building external modules the kernel used as basis is considered 1788 # read-only, and no consistency checks are ma 1635 # read-only, and no consistency checks are made and the make 1789 # system is not used on the basis kernel. If 1636 # system is not used on the basis kernel. If updates are required 1790 # in the basis kernel ordinary make commands !! 1637 # in the basis kernel ordinary make commands (without M=...) must >> 1638 # be used. >> 1639 # >> 1640 # The following are the only valid targets when building external >> 1641 # modules. >> 1642 # make M=dir clean Delete all automatically generated files >> 1643 # make M=dir modules Make all modules in specified dir >> 1644 # make M=dir Same as 'make M=dir modules' >> 1645 # make M=dir modules_install >> 1646 # Install the modules built in the module directory >> 1647 # Assumes install directory is already created 1791 1648 1792 # We are always building only modules. !! 1649 # We are always building modules 1793 KBUILD_BUILTIN := << 1794 KBUILD_MODULES := 1 1650 KBUILD_MODULES := 1 1795 1651 1796 build-dir := $(KBUILD_EXTMOD) !! 1652 PHONY += $(objtree)/Module.symvers >> 1653 $(objtree)/Module.symvers: >> 1654 @test -e $(objtree)/Module.symvers || ( \ >> 1655 echo; \ >> 1656 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ >> 1657 echo " is missing; modules will have no dependencies and modversions."; \ >> 1658 echo ) >> 1659 >> 1660 build-dirs := $(KBUILD_EXTMOD) >> 1661 PHONY += modules >> 1662 modules: descend $(objtree)/Module.symvers >> 1663 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1664 >> 1665 PHONY += modules_install >> 1666 modules_install: _emodinst_ _emodinst_post 1797 1667 1798 compile_commands.json: $(extmod_prefix)compil !! 1668 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1799 PHONY += compile_commands.json !! 1669 PHONY += _emodinst_ >> 1670 _emodinst_: >> 1671 $(Q)mkdir -p $(MODLIB)/$(install-dir) >> 1672 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1673 >> 1674 PHONY += _emodinst_post >> 1675 _emodinst_post: _emodinst_ >> 1676 $(call cmd,depmod) 1800 1677 1801 clean-dirs := $(KBUILD_EXTMOD) 1678 clean-dirs := $(KBUILD_EXTMOD) 1802 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1679 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1803 $(KBUILD_EXTMOD)/compile_commands.jso << 1804 1680 1805 PHONY += prepare !! 1681 PHONY += / 1806 # now expand this into a simple variable to r !! 1682 /: 1807 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT !! 1683 @echo >&2 '"$(MAKE) /" is no longer supported. Please use "$(MAKE) ./" instead.' 1808 prepare: << 1809 @if [ "$(CC_VERSION_TEXT)" != "$(CONF << 1810 echo >&2 "warning: the compil << 1811 echo >&2 " The kernel was bu << 1812 echo >&2 " You are using: << 1813 fi << 1814 1684 1815 PHONY += help 1685 PHONY += help 1816 help: 1686 help: 1817 @echo ' Building external modules.' 1687 @echo ' Building external modules.' 1818 @echo ' Syntax: make -C path/to/ker 1688 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1819 @echo '' 1689 @echo '' 1820 @echo ' modules - default t 1690 @echo ' modules - default target, build the module(s)' 1821 @echo ' modules_install - install t 1691 @echo ' modules_install - install the module' 1822 @echo ' clean - remove ge 1692 @echo ' clean - remove generated files in module directory only' 1823 @echo ' rust-analyzer - generate << 1824 @echo '' 1693 @echo '' 1825 1694 1826 ifndef CONFIG_MODULES !! 1695 PHONY += prepare 1827 modules modules_install: __external_modules_e << 1828 __external_modules_error: << 1829 @echo >&2 '***' << 1830 @echo >&2 '*** The present kernel dis << 1831 @echo >&2 '*** You cannot build or in << 1832 @echo >&2 '***' << 1833 @false << 1834 endif << 1835 << 1836 endif # KBUILD_EXTMOD 1696 endif # KBUILD_EXTMOD 1837 1697 1838 # ------------------------------------------- << 1839 # Modules << 1840 << 1841 PHONY += modules modules_install modules_sign << 1842 << 1843 modules_install: << 1844 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1845 sign-only=$(if $(filter modules_insta << 1846 << 1847 ifeq ($(CONFIG_MODULE_SIG),y) << 1848 # modules_sign is a subset of modules_install << 1849 # 'make modules_install modules_sign' is equi << 1850 modules_sign: modules_install << 1851 @: << 1852 else << 1853 modules_sign: << 1854 @echo >&2 '***' << 1855 @echo >&2 '*** CONFIG_MODULE_SIG is d << 1856 @echo >&2 '***' << 1857 @false << 1858 endif << 1859 << 1860 ifdef CONFIG_MODULES << 1861 << 1862 $(MODORDER): $(build-dir) << 1863 @: << 1864 << 1865 # KBUILD_MODPOST_NOFINAL can be set to skip t << 1866 # This is solely useful to speed up test comp << 1867 modules: modpost << 1868 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1869 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1870 endif << 1871 << 1872 PHONY += modules_check << 1873 modules_check: $(MODORDER) << 1874 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1875 << 1876 else # CONFIG_MODULES << 1877 << 1878 modules: << 1879 @: << 1880 << 1881 KBUILD_MODULES := << 1882 << 1883 endif # CONFIG_MODULES << 1884 << 1885 PHONY += modpost << 1886 modpost: $(if $(single-build),, $(if $(KBUILD << 1887 $(if $(KBUILD_MODULES), modules_chec << 1888 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1889 << 1890 # Single targets 1698 # Single targets 1891 # ------------------------------------------- 1699 # --------------------------------------------------------------------------- 1892 # To build individual files in subdirectories 1700 # To build individual files in subdirectories, you can do like this: 1893 # 1701 # 1894 # make foo/bar/baz.s 1702 # make foo/bar/baz.s 1895 # 1703 # 1896 # The supported suffixes for single-target ar 1704 # The supported suffixes for single-target are listed in 'single-targets' 1897 # 1705 # 1898 # To build only under specific subdirectories 1706 # To build only under specific subdirectories, you can do like this: 1899 # 1707 # 1900 # make foo/bar/baz/ 1708 # make foo/bar/baz/ 1901 1709 1902 ifdef single-build 1710 ifdef single-build 1903 1711 1904 # .ko is special because modpost is needed 1712 # .ko is special because modpost is needed 1905 single-ko := $(sort $(filter %.ko, $(MAKECMDG 1713 single-ko := $(sort $(filter %.ko, $(MAKECMDGOALS))) 1906 single-no-ko := $(filter-out $(single-ko), $( !! 1714 single-no-ko := $(sort $(patsubst %.ko,%.mod, $(MAKECMDGOALS))) 1907 $(foreach x, o mod, $(patsubs << 1908 1715 1909 $(single-ko): single_modules !! 1716 $(single-ko): single_modpost 1910 @: 1717 @: 1911 $(single-no-ko): $(build-dir) !! 1718 $(single-no-ko): descend 1912 @: 1719 @: 1913 1720 1914 # Remove MODORDER when done because it is not !! 1721 ifeq ($(KBUILD_EXTMOD),) 1915 PHONY += single_modules !! 1722 # For the single build of in-tree modules, use a temporary file to avoid 1916 single_modules: $(single-no-ko) modules_prepa !! 1723 # the situation of modules_install installing an invalid modules.order. 1917 $(Q){ $(foreach m, $(single-ko), echo !! 1724 MODORDER := .modules.tmp 1918 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1919 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1920 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1921 endif 1725 endif 1922 $(Q)rm -f $(MODORDER) << 1923 1726 1924 single-goals := $(addprefix $(build-dir)/, $( !! 1727 PHONY += single_modpost >> 1728 single_modpost: $(single-no-ko) >> 1729 $(Q){ $(foreach m, $(single-ko), echo $(extmod-prefix)$m;) } > $(MODORDER) >> 1730 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1925 1731 1926 KBUILD_MODULES := 1 1732 KBUILD_MODULES := 1 1927 1733 >> 1734 export KBUILD_SINGLE_TARGETS := $(addprefix $(extmod-prefix), $(single-no-ko)) >> 1735 >> 1736 # trim unrelated directories >> 1737 build-dirs := $(foreach d, $(build-dirs), \ >> 1738 $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d))) >> 1739 1928 endif 1740 endif 1929 1741 >> 1742 # Handle descending into subdirectories listed in $(build-dirs) 1930 # Preset locale variables to speed up the bui 1743 # Preset locale variables to speed up the build process. Limit locale 1931 # tweaks to this spot to avoid wrong language 1744 # tweaks to this spot to avoid wrong language settings when running 1932 # make menuconfig etc. 1745 # make menuconfig etc. 1933 # Error messages still appears in the origina 1746 # Error messages still appears in the original language 1934 PHONY += $(build-dir) !! 1747 PHONY += descend $(build-dirs) 1935 $(build-dir): prepare !! 1748 descend: $(build-dirs) 1936 $(Q)$(MAKE) $(build)=$@ need-builtin= !! 1749 $(build-dirs): prepare >> 1750 $(Q)$(MAKE) $(build)=$@ \ >> 1751 single-build=$(if $(filter-out $@/, $(single-no-ko)),1) \ >> 1752 need-builtin=1 need-modorder=1 1937 1753 1938 clean-dirs := $(addprefix _clean_, $(clean-di 1754 clean-dirs := $(addprefix _clean_, $(clean-dirs)) 1939 PHONY += $(clean-dirs) clean 1755 PHONY += $(clean-dirs) clean 1940 $(clean-dirs): 1756 $(clean-dirs): 1941 $(Q)$(MAKE) $(clean)=$(patsubst _clea 1757 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1942 1758 1943 clean: $(clean-dirs) 1759 clean: $(clean-dirs) >> 1760 $(call cmd,rmdirs) 1944 $(call cmd,rmfiles) 1761 $(call cmd,rmfiles) 1945 @find $(or $(KBUILD_EXTMOD), .) $(RCS !! 1762 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1946 \( -name '*.[aios]' -o -name !! 1763 \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ 1947 -o -name '*.ko.*' \ 1764 -o -name '*.ko.*' \ 1948 -o -name '*.dtb' -o -name '*. !! 1765 -o -name '*.dtb' -o -name '*.dtb.S' -o -name '*.dt.yaml' \ 1949 -o -name '*.dtb.S' -o -name ' << 1950 -o -name '*.dt.yaml' -o -name << 1951 -o -name '*.dwo' -o -name '*. 1766 -o -name '*.dwo' -o -name '*.lst' \ 1952 -o -name '*.su' -o -name '*.m !! 1767 -o -name '*.su' -o -name '*.mod' -o -name '*.ns_deps' \ 1953 -o -name '.*.d' -o -name '.*. 1768 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1954 -o -name '*.lex.c' -o -name ' 1769 -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 1955 -o -name '*.asn1.[ch]' \ 1770 -o -name '*.asn1.[ch]' \ 1956 -o -name '*.symtypes' -o -nam 1771 -o -name '*.symtypes' -o -name 'modules.order' \ >> 1772 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1957 -o -name '*.c.[012]*.*' \ 1773 -o -name '*.c.[012]*.*' \ 1958 -o -name '*.ll' \ 1774 -o -name '*.ll' \ 1959 -o -name '*.gcno' \ !! 1775 -o -name '*.gcno' \) -type f -print | xargs rm -f 1960 \) -type f -print \ << 1961 -o -name '.tmp_*' -print \ << 1962 | xargs rm -rf << 1963 1776 1964 # Generate tags for editors 1777 # Generate tags for editors 1965 # ------------------------------------------- 1778 # --------------------------------------------------------------------------- 1966 quiet_cmd_tags = GEN $@ 1779 quiet_cmd_tags = GEN $@ 1967 cmd_tags = $(BASH) $(srctree)/scripts/t 1780 cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@ 1968 1781 1969 tags TAGS cscope gtags: FORCE 1782 tags TAGS cscope gtags: FORCE 1970 $(call cmd,tags) 1783 $(call cmd,tags) 1971 1784 1972 # Generate rust-project.json (a file that des << 1973 # Rust projects) for rust-analyzer (an implem << 1974 # Protocol). << 1975 PHONY += rust-analyzer << 1976 rust-analyzer: << 1977 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1978 $(Q)$(MAKE) $(build)=rust $@ << 1979 << 1980 # Script to generate missing namespace depend 1785 # Script to generate missing namespace dependencies 1981 # ------------------------------------------- 1786 # --------------------------------------------------------------------------- 1982 1787 1983 PHONY += nsdeps 1788 PHONY += nsdeps 1984 nsdeps: export KBUILD_NSDEPS=1 << 1985 nsdeps: modules << 1986 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1987 << 1988 # Clang Tooling << 1989 # ------------------------------------------- << 1990 << 1991 quiet_cmd_gen_compile_commands = GEN $@ << 1992 cmd_gen_compile_commands = $(PYTHON3) $ << 1993 << 1994 $(extmod_prefix)compile_commands.json: $(srct << 1995 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K << 1996 $(if $(CONFIG_MODULES), $(MODORDER)) << 1997 $(call if_changed,gen_compile_command << 1998 << 1999 targets += $(extmod_prefix)compile_commands.j << 2000 << 2001 PHONY += clang-tidy clang-analyzer << 2002 << 2003 ifdef CONFIG_CC_IS_CLANG << 2004 quiet_cmd_clang_tools = CHECK $< << 2005 cmd_clang_tools = $(PYTHON3) $(srctree) << 2006 1789 2007 clang-tidy clang-analyzer: $(extmod_prefix)co !! 1790 nsdeps: modules 2008 $(call cmd,clang_tools) !! 1791 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost nsdeps 2009 else !! 1792 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 2010 clang-tidy clang-analyzer: << 2011 @echo "$@ requires CC=clang" >&2 << 2012 @false << 2013 endif << 2014 1793 2015 # Scripts to check various things for consist 1794 # Scripts to check various things for consistency 2016 # ------------------------------------------- 1795 # --------------------------------------------------------------------------- 2017 1796 2018 PHONY += includecheck versioncheck coccicheck !! 1797 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 2019 1798 2020 includecheck: 1799 includecheck: 2021 find $(srctree)/* $(RCS_FIND_IGNORE) 1800 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2022 -name '*.[hcS]' -type f -prin 1801 -name '*.[hcS]' -type f -print | sort \ 2023 | xargs $(PERL) -w $(srctree) 1802 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 2024 1803 2025 versioncheck: 1804 versioncheck: 2026 find $(srctree)/* $(RCS_FIND_IGNORE) 1805 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2027 -name '*.[hcS]' -type f -prin 1806 -name '*.[hcS]' -type f -print | sort \ 2028 | xargs $(PERL) -w $(srctree) 1807 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 2029 1808 2030 coccicheck: 1809 coccicheck: 2031 $(Q)$(BASH) $(srctree)/scripts/$@ 1810 $(Q)$(BASH) $(srctree)/scripts/$@ 2032 1811 >> 1812 namespacecheck: >> 1813 $(PERL) $(srctree)/scripts/namespace.pl >> 1814 2033 export_report: 1815 export_report: 2034 $(PERL) $(srctree)/scripts/export_rep 1816 $(PERL) $(srctree)/scripts/export_report.pl 2035 1817 2036 PHONY += checkstack kernelrelease kernelversi 1818 PHONY += checkstack kernelrelease kernelversion image_name 2037 1819 2038 # UML needs a little special treatment here. 1820 # UML needs a little special treatment here. It wants to use the host 2039 # toolchain, so needs $(SUBARCH) passed to ch 1821 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 2040 # else wants $(ARCH), including people doing 1822 # else wants $(ARCH), including people doing cross-builds, which means 2041 # that $(SUBARCH) doesn't work here. 1823 # that $(SUBARCH) doesn't work here. 2042 ifeq ($(ARCH), um) 1824 ifeq ($(ARCH), um) 2043 CHECKSTACK_ARCH := $(SUBARCH) 1825 CHECKSTACK_ARCH := $(SUBARCH) 2044 else 1826 else 2045 CHECKSTACK_ARCH := $(ARCH) 1827 CHECKSTACK_ARCH := $(ARCH) 2046 endif 1828 endif 2047 MINSTACKSIZE ?= 100 << 2048 checkstack: 1829 checkstack: 2049 $(OBJDUMP) -d vmlinux $$(find . -name 1830 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 2050 $(PERL) $(srctree)/scripts/checkstack !! 1831 $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 2051 1832 2052 kernelrelease: 1833 kernelrelease: 2053 @$(filechk_kernel.release) !! 1834 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 2054 1835 2055 kernelversion: 1836 kernelversion: 2056 @echo $(KERNELVERSION) 1837 @echo $(KERNELVERSION) 2057 1838 2058 image_name: 1839 image_name: 2059 @echo $(KBUILD_IMAGE) 1840 @echo $(KBUILD_IMAGE) 2060 1841 2061 PHONY += run-command !! 1842 # Clear a bunch of variables before executing the submake 2062 run-command: !! 1843 2063 $(Q)$(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/ $* >> 1855 >> 1856 # FIXME Should go into a make.lib or something >> 1857 # =========================================================================== >> 1858 >> 1859 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) >> 1860 cmd_rmdirs = rm -rf $(rm-dirs) 2064 1861 2065 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 1862 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2066 cmd_rmfiles = rm -rf $(rm-files) !! 1863 cmd_rmfiles = rm -f $(rm-files) >> 1864 >> 1865 # Run depmod only if we have System.map and depmod is executable >> 1866 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) >> 1867 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ >> 1868 $(KERNELRELEASE) 2067 1869 2068 # read saved command lines for existing targe 1870 # read saved command lines for existing targets 2069 existing-targets := $(wildcard $(sort $(targe 1871 existing-targets := $(wildcard $(sort $(targets))) 2070 1872 2071 -include $(foreach f,$(existing-targets),$(di 1873 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 2072 1874 2073 endif # config-build !! 1875 endif # config-targets 2074 endif # mixed-build 1876 endif # mixed-build 2075 endif # need-sub-make 1877 endif # need-sub-make 2076 1878 2077 PHONY += FORCE 1879 PHONY += FORCE 2078 FORCE: 1880 FORCE: 2079 1881 2080 # Declare the contents of the PHONY variable 1882 # Declare the contents of the PHONY variable as phony. We keep that 2081 # information in a variable so we can use it 1883 # information in a variable so we can use it in if_changed and friends. 2082 .PHONY: $(PHONY) 1884 .PHONY: $(PHONY)
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