1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0 2 VERSION = 6 !! 2 VERSION = 5 3 PATCHLEVEL = 11 !! 3 PATCHLEVEL = 3 4 SUBLEVEL = 5 !! 4 SUBLEVEL = 18 5 EXTRAVERSION = 5 EXTRAVERSION = 6 NAME = Baby Opossum Posse !! 6 NAME = Bobtail Squid 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 << 97 quiet=silent_ << 98 override KBUILD_VERBOSE := << 99 endif << 100 << 101 export quiet Q KBUILD_VERBOSE << 102 92 103 # Call a source code checker (by default, "spa !! 93 ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) 104 # C compilation. !! 94 quiet=silent_ 105 # << 106 # Use 'make C=1' to enable checking of only re << 107 # Use 'make C=2' to enable checking of *all* s << 108 # of whether they are re-compiled or not. << 109 # << 110 # See the file "Documentation/dev-tools/sparse << 111 # including where to get the "sparse" utility. << 112 << 113 ifeq ("$(origin C)", "command line") << 114 KBUILD_CHECKSRC = $(C) << 115 endif << 116 ifndef KBUILD_CHECKSRC << 117 KBUILD_CHECKSRC = 0 << 118 endif 95 endif 119 96 120 export KBUILD_CHECKSRC !! 97 export quiet Q KBUILD_VERBOSE 121 << 122 # Enable "clippy" (a linter) as part of the Ru << 123 # << 124 # Use 'make CLIPPY=1' to enable it. << 125 ifeq ("$(origin CLIPPY)", "command line") << 126 KBUILD_CLIPPY := $(CLIPPY) << 127 endif << 128 << 129 export KBUILD_CLIPPY << 130 << 131 # Use make M=dir or set the environment variab << 132 # directory of external module to build. Setti << 133 ifeq ("$(origin M)", "command line") << 134 KBUILD_EXTMOD := $(M) << 135 endif << 136 << 137 $(if $(word 2, $(KBUILD_EXTMOD)), \ << 138 $(error building multiple external mod << 139 << 140 $(foreach x, % :, $(if $(findstring $x, $(KBUI << 141 $(error module directory path cannot c << 142 << 143 # Remove trailing slashes << 144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) << 145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM << 146 endif << 147 << 148 export KBUILD_EXTMOD << 149 << 150 # backward compatibility << 151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC << 152 << 153 ifeq ("$(origin W)", "command line") << 154 KBUILD_EXTRA_WARN := $(W) << 155 endif << 156 << 157 export KBUILD_EXTRA_WARN << 158 98 159 # Kbuild will save output files in the current 99 # Kbuild will save output files in the current working directory. 160 # This does not need to match to the root of t 100 # This does not need to match to the root of the kernel source tree. 161 # 101 # 162 # For example, you can do this: 102 # For example, you can do this: 163 # 103 # 164 # cd /dir/to/store/output/files; make -f /dir 104 # cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile 165 # 105 # 166 # If you want to save output files in a differ 106 # If you want to save output files in a different location, there are 167 # two syntaxes to specify it. 107 # two syntaxes to specify it. 168 # 108 # 169 # 1) O= 109 # 1) O= 170 # Use "make O=dir/to/store/output/files/" 110 # Use "make O=dir/to/store/output/files/" 171 # 111 # 172 # 2) Set KBUILD_OUTPUT 112 # 2) Set KBUILD_OUTPUT 173 # Set the environment variable KBUILD_OUTPUT t 113 # Set the environment variable KBUILD_OUTPUT to point to the output directory. 174 # export KBUILD_OUTPUT=dir/to/store/output/fil 114 # export KBUILD_OUTPUT=dir/to/store/output/files/; make 175 # 115 # 176 # The O= assignment takes precedence over the 116 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 177 # variable. 117 # variable. 178 118 179 # Do we want to change the working directory? 119 # Do we want to change the working directory? 180 ifeq ("$(origin O)", "command line") 120 ifeq ("$(origin O)", "command line") 181 KBUILD_OUTPUT := $(O) 121 KBUILD_OUTPUT := $(O) 182 endif 122 endif 183 123 184 ifneq ($(KBUILD_OUTPUT),) 124 ifneq ($(KBUILD_OUTPUT),) 185 # $(realpath ...) gets empty if the path does !! 125 # Make's built-in functions such as $(abspath ...), $(realpath ...) cannot 186 $(shell mkdir -p "$(KBUILD_OUTPUT)") !! 126 # expand a shell special character '~'. We use a somewhat tedious way here. >> 127 abs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) >> 128 $(if $(abs_objtree),, \ >> 129 $(error failed to create output directory "$(KBUILD_OUTPUT)")) >> 130 187 # $(realpath ...) resolves symlinks 131 # $(realpath ...) resolves symlinks 188 abs_objtree := $(realpath $(KBUILD_OUTPUT)) !! 132 abs_objtree := $(realpath $(abs_objtree)) 189 $(if $(abs_objtree),,$(error failed to create !! 133 else >> 134 abs_objtree := $(CURDIR) 190 endif # ifneq ($(KBUILD_OUTPUT),) 135 endif # ifneq ($(KBUILD_OUTPUT),) 191 136 192 ifneq ($(words $(subst :, ,$(abs_srctree))), 1 !! 137 ifeq ($(abs_objtree),$(CURDIR)) 193 $(error source directory cannot contain spaces !! 138 # Suppress "Entering directory ..." unless we are changing the work directory. >> 139 MAKEFLAGS += --no-print-directory >> 140 else >> 141 need-sub-make := 1 194 endif 142 endif 195 143 196 export sub_make_done := 1 !! 144 abs_srctree := $(realpath $(dir $(lastword $(MAKEFILE_LIST)))) 197 145 198 endif # sub_make_done !! 146 ifneq ($(words $(subst :, ,$(abs_srctree))), 1) >> 147 $(error source directory cannot contain spaces or colons) >> 148 endif 199 149 200 ifeq ($(abs_objtree),$(CURDIR)) !! 150 ifneq ($(abs_srctree),$(abs_objtree)) 201 # Suppress "Entering directory ..." if we are !! 151 # Look for make include files relative to root of kernel src 202 no-print-directory := --no-print-directory !! 152 # 203 else !! 153 # This does not become effective immediately because MAKEFLAGS is re-parsed 204 # Recursion to show "Entering directory ..." !! 154 # once after the Makefile is read. We need to invoke sub-make. >> 155 MAKEFLAGS += --include-dir=$(abs_srctree) 205 need-sub-make := 1 156 need-sub-make := 1 206 endif 157 endif 207 158 208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 159 ifneq ($(filter 3.%,$(MAKE_VERSION)),) 209 # If --no-print-directory is unset, recurse on !! 160 # 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x 210 # You may end up recursing into __sub-make twi !! 161 # 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 := 1 162 need-sub-make := 1 >> 163 # Cancel implicit rules for this Makefile. >> 164 $(lastword $(MAKEFILE_LIST)): ; 213 endif 165 endif 214 166 >> 167 export abs_srctree abs_objtree >> 168 export sub_make_done := 1 >> 169 215 ifeq ($(need-sub-make),1) 170 ifeq ($(need-sub-make),1) 216 171 217 PHONY += $(MAKECMDGOALS) __sub-make !! 172 PHONY += $(MAKECMDGOALS) sub-make 218 173 219 $(filter-out $(this-makefile), $(MAKECMDGOALS) !! 174 $(filter-out _all sub-make $(lastword $(MAKEFILE_LIST)), $(MAKECMDGOALS)) _all: sub-make 220 @: 175 @: 221 176 222 # Invoke a second make in the output directory 177 # Invoke a second make in the output directory, passing relevant variables 223 __sub-make: !! 178 sub-make: 224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 179 $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS) 225 -f $(abs_srctree)/Makefile $(MAKECMDGO << 226 180 227 else # need-sub-make !! 181 endif # need-sub-make >> 182 endif # sub_make_done 228 183 229 # We process the rest of the Makefile if this 184 # We process the rest of the Makefile if this is the final invocation of make >> 185 ifeq ($(need-sub-make),) >> 186 >> 187 # Do not print "Entering directory ...", >> 188 # but we want to display it when entering to the output directory >> 189 # so that IDEs/editors are able to understand relative filenames. >> 190 MAKEFLAGS += --no-print-directory >> 191 >> 192 # Call a source code checker (by default, "sparse") as part of the >> 193 # C compilation. >> 194 # >> 195 # Use 'make C=1' to enable checking of only re-compiled files. >> 196 # Use 'make C=2' to enable checking of *all* source files, regardless >> 197 # of whether they are re-compiled or not. >> 198 # >> 199 # See the file "Documentation/dev-tools/sparse.rst" for more details, >> 200 # including where to get the "sparse" utility. >> 201 >> 202 ifeq ("$(origin C)", "command line") >> 203 KBUILD_CHECKSRC = $(C) >> 204 endif >> 205 ifndef KBUILD_CHECKSRC >> 206 KBUILD_CHECKSRC = 0 >> 207 endif >> 208 >> 209 # Use make M=dir to specify directory of external module to build >> 210 # Old syntax make ... SUBDIRS=$PWD is still supported >> 211 # Setting the environment variable KBUILD_EXTMOD take precedence >> 212 ifdef SUBDIRS >> 213 $(warning ================= WARNING ================) >> 214 $(warning 'SUBDIRS' will be removed after Linux 5.3) >> 215 $(warning ) >> 216 $(warning If you are building an individual subdirectory) >> 217 $(warning in the kernel tree, you can do like this:) >> 218 $(warning $$ make path/to/dir/you/want/to/build/) >> 219 $(warning (Do not forget the trailing slash)) >> 220 $(warning ) >> 221 $(warning If you are building an external module,) >> 222 $(warning Please use 'M=' or 'KBUILD_EXTMOD' instead) >> 223 $(warning ==========================================) >> 224 KBUILD_EXTMOD ?= $(SUBDIRS) >> 225 endif >> 226 >> 227 ifeq ("$(origin M)", "command line") >> 228 KBUILD_EXTMOD := $(M) >> 229 endif >> 230 >> 231 export KBUILD_CHECKSRC KBUILD_EXTMOD 230 232 231 ifeq ($(abs_srctree),$(abs_objtree)) 233 ifeq ($(abs_srctree),$(abs_objtree)) 232 # building in the source tree 234 # building in the source tree 233 srctree := . 235 srctree := . 234 building_out_of_srctree := 236 building_out_of_srctree := 235 else 237 else 236 ifeq ($(abs_srctree)/,$(dir $(abs_objt 238 ifeq ($(abs_srctree)/,$(dir $(abs_objtree))) 237 # building in a subdirectory o 239 # building in a subdirectory of the source tree 238 srctree := .. 240 srctree := .. 239 else 241 else 240 srctree := $(abs_srctree) 242 srctree := $(abs_srctree) 241 endif 243 endif 242 building_out_of_srctree := 1 244 building_out_of_srctree := 1 243 endif 245 endif 244 246 245 ifneq ($(KBUILD_ABS_SRCTREE),) 247 ifneq ($(KBUILD_ABS_SRCTREE),) 246 srctree := $(abs_srctree) 248 srctree := $(abs_srctree) 247 endif 249 endif 248 250 249 objtree := . 251 objtree := . 250 << 251 VPATH := << 252 << 253 ifeq ($(KBUILD_EXTMOD),) << 254 ifdef building_out_of_srctree << 255 VPATH := $(srctree) 252 VPATH := $(srctree) 256 endif << 257 endif << 258 253 259 export building_out_of_srctree srctree objtree 254 export building_out_of_srctree srctree objtree VPATH 260 255 261 # To make sure we do not include .config for a 256 # To make sure we do not include .config for any of the *config targets 262 # catch them early, and hand them over to scri 257 # catch them early, and hand them over to scripts/kconfig/Makefile 263 # It is allowed to specify more targets when c 258 # It is allowed to specify more targets when calling make, including 264 # mixing *config targets and build targets. 259 # mixing *config targets and build targets. 265 # For example 'make oldconfig all'. 260 # For example 'make oldconfig all'. 266 # Detect when mixed targets is specified, and 261 # Detect when mixed targets is specified, and make a second invocation 267 # of make so .config is not included in this c 262 # of make so .config is not included in this case either (for *config). 268 263 269 version_h := include/generated/uapi/linux/vers 264 version_h := include/generated/uapi/linux/version.h >> 265 old_version_h := include/linux/version.h 270 266 271 clean-targets := %clean mrproper cleandocs 267 clean-targets := %clean mrproper cleandocs 272 no-dot-config-targets := $(clean-targets) \ 268 no-dot-config-targets := $(clean-targets) \ 273 cscope gtags TAGS tag 269 cscope gtags TAGS tags help% %docs check% coccicheck \ 274 $(version_h) headers 270 $(version_h) headers headers_% archheaders archscripts \ 275 %asm-generic kernelve !! 271 %asm-generic kernelversion %src-pkg 276 outputmakefile rustav !! 272 no-sync-config-targets := $(no-dot-config-targets) install %install \ 277 no-sync-config-targets := $(no-dot-config-targ !! 273 kernelrelease 278 image_name !! 274 279 single-targets := %.a %.i %.ko %.lds %.ll %.ls !! 275 config-targets := 0 280 !! 276 mixed-targets := 0 281 config-build := !! 277 dot-config := 1 282 mixed-build := !! 278 may-sync-config := 1 283 need-config := 1 << 284 may-sync-config := 1 << 285 single-build := << 286 279 287 ifneq ($(filter $(no-dot-config-targets), $(MA 280 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 288 ifeq ($(filter-out $(no-dot-config-targets !! 281 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 289 need-config := !! 282 dot-config := 0 290 endif !! 283 endif 291 endif 284 endif 292 285 293 ifneq ($(filter $(no-sync-config-targets), $(M 286 ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) 294 ifeq ($(filter-out $(no-sync-config-target !! 287 ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) 295 may-sync-config := !! 288 may-sync-config := 0 296 endif !! 289 endif 297 endif 290 endif 298 291 299 need-compiler := $(may-sync-config) << 300 << 301 ifneq ($(KBUILD_EXTMOD),) 292 ifneq ($(KBUILD_EXTMOD),) 302 may-sync-config := !! 293 may-sync-config := 0 303 endif 294 endif 304 295 305 ifeq ($(KBUILD_EXTMOD),) 296 ifeq ($(KBUILD_EXTMOD),) 306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 297 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 307 config-build := 1 !! 298 config-targets := 1 308 ifneq ($(words $(MAKECMDGOALS)),1) !! 299 ifneq ($(words $(MAKECMDGOALS)),1) 309 mixed-build := 1 !! 300 mixed-targets := 1 >> 301 endif 310 endif 302 endif 311 endif << 312 endif << 313 << 314 # We cannot build single targets and the other << 315 ifneq ($(filter $(single-targets), $(MAKECMDGO << 316 single-build := 1 << 317 ifneq ($(filter-out $(single-targets), $(M << 318 mixed-build := 1 << 319 endif << 320 endif 303 endif 321 304 322 # For "make -j clean all", "make -j mrproper d 305 # For "make -j clean all", "make -j mrproper defconfig all", etc. 323 ifneq ($(filter $(clean-targets),$(MAKECMDGOAL 306 ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 324 ifneq ($(filter-out $(clean-targets),$(MAK !! 307 ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 325 mixed-build := 1 !! 308 mixed-targets := 1 326 endif !! 309 endif 327 endif 310 endif 328 311 329 # install and modules_install need also be pro 312 # install and modules_install need also be processed one by one 330 ifneq ($(filter install,$(MAKECMDGOALS)),) 313 ifneq ($(filter install,$(MAKECMDGOALS)),) 331 ifneq ($(filter modules_install,$(MAKECMDG !! 314 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 332 mixed-build := 1 !! 315 mixed-targets := 1 333 endif !! 316 endif 334 endif 317 endif 335 318 336 ifdef mixed-build !! 319 ifeq ($(mixed-targets),1) 337 # ============================================ 320 # =========================================================================== 338 # We're called with mixed targets (*config and 321 # We're called with mixed targets (*config and build targets). 339 # Handle them one by one. 322 # Handle them one by one. 340 323 341 PHONY += $(MAKECMDGOALS) __build_one_by_one 324 PHONY += $(MAKECMDGOALS) __build_one_by_one 342 325 343 $(MAKECMDGOALS): __build_one_by_one !! 326 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 344 @: 327 @: 345 328 346 __build_one_by_one: 329 __build_one_by_one: 347 $(Q)set -e; \ 330 $(Q)set -e; \ 348 for i in $(MAKECMDGOALS); do \ 331 for i in $(MAKECMDGOALS); do \ 349 $(MAKE) -f $(srctree)/Makefile 332 $(MAKE) -f $(srctree)/Makefile $$i; \ 350 done 333 done 351 334 352 else # !mixed-build !! 335 else 353 336 354 include $(srctree)/scripts/Kbuild.include !! 337 include scripts/Kbuild.include 355 338 356 # Read KERNELRELEASE from include/config/kerne 339 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 357 KERNELRELEASE = $(call read-file, include/conf !! 340 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. 341 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA 342 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 360 343 361 include $(srctree)/scripts/subarch.include !! 344 include scripts/subarch.include 362 345 363 # Cross compiling and selecting different set 346 # Cross compiling and selecting different set of gcc/bin-utils 364 # -------------------------------------------- 347 # --------------------------------------------------------------------------- 365 # 348 # 366 # When performing cross compilation for other 349 # When performing cross compilation for other architectures ARCH shall be set 367 # to the target architecture. (See arch/* for 350 # to the target architecture. (See arch/* for the possibilities). 368 # ARCH can be set during invocation of make: 351 # ARCH can be set during invocation of make: 369 # make ARCH=arm64 !! 352 # make ARCH=ia64 370 # Another way is to have ARCH set in the envir 353 # Another way is to have ARCH set in the environment. 371 # The default ARCH is the host where make is e 354 # The default ARCH is the host where make is executed. 372 355 373 # CROSS_COMPILE specify the prefix used for al 356 # CROSS_COMPILE specify the prefix used for all executables used 374 # during compilation. Only gcc and related bin 357 # during compilation. Only gcc and related bin-utils executables 375 # are prefixed with $(CROSS_COMPILE). 358 # are prefixed with $(CROSS_COMPILE). 376 # CROSS_COMPILE can be set on the command line 359 # CROSS_COMPILE can be set on the command line 377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 360 # make CROSS_COMPILE=ia64-linux- 378 # Alternatively CROSS_COMPILE can be set in th 361 # Alternatively CROSS_COMPILE can be set in the environment. 379 # Default value for CROSS_COMPILE is not to pr 362 # Default value for CROSS_COMPILE is not to prefix executables 380 # Note: Some architectures assign CROSS_COMPIL 363 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 381 ARCH ?= $(SUBARCH) 364 ARCH ?= $(SUBARCH) 382 365 383 # Architecture as present in compile.h 366 # Architecture as present in compile.h 384 UTS_MACHINE := $(ARCH) 367 UTS_MACHINE := $(ARCH) 385 SRCARCH := $(ARCH) 368 SRCARCH := $(ARCH) 386 369 387 # Additional ARCH settings for x86 370 # Additional ARCH settings for x86 388 ifeq ($(ARCH),i386) 371 ifeq ($(ARCH),i386) 389 SRCARCH := x86 372 SRCARCH := x86 390 endif 373 endif 391 ifeq ($(ARCH),x86_64) 374 ifeq ($(ARCH),x86_64) 392 SRCARCH := x86 375 SRCARCH := x86 393 endif 376 endif 394 377 395 # Additional ARCH settings for sparc 378 # Additional ARCH settings for sparc 396 ifeq ($(ARCH),sparc32) 379 ifeq ($(ARCH),sparc32) 397 SRCARCH := sparc 380 SRCARCH := sparc 398 endif 381 endif 399 ifeq ($(ARCH),sparc64) 382 ifeq ($(ARCH),sparc64) 400 SRCARCH := sparc 383 SRCARCH := sparc 401 endif 384 endif 402 385 403 # Additional ARCH settings for parisc !! 386 # Additional ARCH settings for sh 404 ifeq ($(ARCH),parisc64) !! 387 ifeq ($(ARCH),sh64) 405 SRCARCH := parisc !! 388 SRCARCH := sh 406 endif << 407 << 408 export cross_compiling := << 409 ifneq ($(SRCARCH),$(SUBARCH)) << 410 cross_compiling := 1 << 411 endif 389 endif 412 390 413 KCONFIG_CONFIG ?= .config 391 KCONFIG_CONFIG ?= .config 414 export KCONFIG_CONFIG 392 export KCONFIG_CONFIG 415 393 416 # SHELL used by kbuild 394 # SHELL used by kbuild 417 CONFIG_SHELL := sh !! 395 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ >> 396 else if [ -x /bin/bash ]; then echo /bin/bash; \ >> 397 else echo sh; fi ; fi) 418 398 419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 399 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG 400 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d 401 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 422 402 423 ifneq ($(LLVM),) !! 403 HOSTCC = gcc 424 ifneq ($(filter %/,$(LLVM)),) !! 404 HOSTCXX = g++ 425 LLVM_PREFIX := $(LLVM) !! 405 KBUILD_HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \ 426 else ifneq ($(filter -%,$(LLVM)),) !! 406 -fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) \ 427 LLVM_SUFFIX := $(LLVM) !! 407 $(HOSTCFLAGS) 428 endif !! 408 KBUILD_HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 429 << 430 HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) << 431 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX) << 432 else << 433 HOSTCC = gcc << 434 HOSTCXX = g++ << 435 endif << 436 HOSTRUSTC = rustc << 437 HOSTPKG_CONFIG = pkg-config << 438 << 439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto << 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 409 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 469 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOST 410 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 470 411 471 # Make variables (CC, etc...) 412 # Make variables (CC, etc...) 472 CPP = $(CC) -E !! 413 AS = $(CROSS_COMPILE)as 473 ifneq ($(LLVM),) << 474 CC = $(LLVM_PREFIX)clang$(LLVM_SU << 475 LD = $(LLVM_PREFIX)ld.lld$(LLVM_S << 476 AR = $(LLVM_PREFIX)llvm-ar$(LLVM_ << 477 NM = $(LLVM_PREFIX)llvm-nm$(LLVM_ << 478 OBJCOPY = $(LLVM_PREFIX)llvm-objcopy$( << 479 OBJDUMP = $(LLVM_PREFIX)llvm-objdump$( << 480 READELF = $(LLVM_PREFIX)llvm-readelf$( << 481 STRIP = $(LLVM_PREFIX)llvm-strip$(LL << 482 else << 483 CC = $(CROSS_COMPILE)gcc << 484 LD = $(CROSS_COMPILE)ld 414 LD = $(CROSS_COMPILE)ld >> 415 CC = $(CROSS_COMPILE)gcc >> 416 CPP = $(CC) -E 485 AR = $(CROSS_COMPILE)ar 417 AR = $(CROSS_COMPILE)ar 486 NM = $(CROSS_COMPILE)nm 418 NM = $(CROSS_COMPILE)nm >> 419 STRIP = $(CROSS_COMPILE)strip 487 OBJCOPY = $(CROSS_COMPILE)objcopy 420 OBJCOPY = $(CROSS_COMPILE)objcopy 488 OBJDUMP = $(CROSS_COMPILE)objdump 421 OBJDUMP = $(CROSS_COMPILE)objdump 489 READELF = $(CROSS_COMPILE)readelf !! 422 OBJSIZE = $(CROSS_COMPILE)size 490 STRIP = $(CROSS_COMPILE)strip << 491 endif << 492 RUSTC = rustc << 493 RUSTDOC = rustdoc << 494 RUSTFMT = rustfmt << 495 CLIPPY_DRIVER = clippy-driver << 496 BINDGEN = bindgen << 497 PAHOLE = pahole 423 PAHOLE = pahole 498 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve << 499 LEX = flex 424 LEX = flex 500 YACC = bison 425 YACC = bison 501 AWK = awk 426 AWK = awk 502 INSTALLKERNEL := installkernel 427 INSTALLKERNEL := installkernel >> 428 DEPMOD = /sbin/depmod 503 PERL = perl 429 PERL = perl >> 430 PYTHON = python >> 431 PYTHON2 = python2 504 PYTHON3 = python3 432 PYTHON3 = python3 505 CHECK = sparse 433 CHECK = sparse 506 BASH = bash << 507 KGZIP = gzip << 508 KBZIP2 = bzip2 << 509 KLZOP = lzop << 510 LZMA = lzma << 511 LZ4 = lz4c << 512 XZ = xz << 513 ZSTD = zstd << 514 434 515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC 435 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 516 -Wbitwise -Wno-return-void - 436 -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 517 NOSTDINC_FLAGS := 437 NOSTDINC_FLAGS := 518 CFLAGS_MODULE = 438 CFLAGS_MODULE = 519 RUSTFLAGS_MODULE = << 520 AFLAGS_MODULE = 439 AFLAGS_MODULE = 521 LDFLAGS_MODULE = 440 LDFLAGS_MODULE = 522 CFLAGS_KERNEL = 441 CFLAGS_KERNEL = 523 RUSTFLAGS_KERNEL = << 524 AFLAGS_KERNEL = 442 AFLAGS_KERNEL = 525 LDFLAGS_vmlinux = 443 LDFLAGS_vmlinux = 526 444 527 # Use USERINCLUDE when you must reference the 445 # Use USERINCLUDE when you must reference the UAPI directories only. 528 USERINCLUDE := \ 446 USERINCLUDE := \ 529 -I$(srctree)/arch/$(SRCARCH)/i 447 -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 530 -I$(objtree)/arch/$(SRCARCH)/i 448 -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 531 -I$(srctree)/include/uapi \ 449 -I$(srctree)/include/uapi \ 532 -I$(objtree)/include/generated 450 -I$(objtree)/include/generated/uapi \ 533 -include $(srctree)/include/li << 534 -include $(srctree)/include/li 451 -include $(srctree)/include/linux/kconfig.h 535 452 536 # Use LINUXINCLUDE when you must reference the 453 # Use LINUXINCLUDE when you must reference the include/ directory. 537 # Needed to be compatible with the O= option 454 # Needed to be compatible with the O= option 538 LINUXINCLUDE := \ 455 LINUXINCLUDE := \ 539 -I$(srctree)/arch/$(SRCARCH)/i 456 -I$(srctree)/arch/$(SRCARCH)/include \ 540 -I$(objtree)/arch/$(SRCARCH)/i 457 -I$(objtree)/arch/$(SRCARCH)/include/generated \ 541 $(if $(building_out_of_srctree 458 $(if $(building_out_of_srctree),-I$(srctree)/include) \ 542 -I$(objtree)/include \ 459 -I$(objtree)/include \ 543 $(USERINCLUDE) 460 $(USERINCLUDE) 544 461 545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 462 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 546 !! 463 KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ 547 KBUILD_CFLAGS := !! 464 -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ 548 KBUILD_CFLAGS += -std=gnu11 !! 465 -Werror=implicit-function-declaration -Werror=implicit-int \ 549 KBUILD_CFLAGS += -fshort-wchar !! 466 -Wno-format-security \ 550 KBUILD_CFLAGS += -funsigned-char !! 467 -std=gnu89 551 KBUILD_CFLAGS += -fno-common << 552 KBUILD_CFLAGS += -fno-PIE << 553 KBUILD_CFLAGS += -fno-strict-aliasing << 554 << 555 KBUILD_CPPFLAGS := -D__KERNEL__ 468 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 := 469 KBUILD_AFLAGS_KERNEL := 565 KBUILD_CFLAGS_KERNEL := 470 KBUILD_CFLAGS_KERNEL := 566 KBUILD_RUSTFLAGS_KERNEL := << 567 KBUILD_AFLAGS_MODULE := -DMODULE 471 KBUILD_AFLAGS_MODULE := -DMODULE 568 KBUILD_CFLAGS_MODULE := -DMODULE 472 KBUILD_CFLAGS_MODULE := -DMODULE 569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE !! 473 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 570 KBUILD_LDFLAGS_MODULE := << 571 KBUILD_LDFLAGS := 474 KBUILD_LDFLAGS := >> 475 GCC_PLUGINS_CFLAGS := 572 CLANG_FLAGS := 476 CLANG_FLAGS := 573 477 574 ifeq ($(KBUILD_CLIPPY),1) !! 478 export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC 575 RUSTC_OR_CLIPPY_QUIET := CLIPPY !! 479 export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE PAHOLE LEX YACC AWK INSTALLKERNEL 576 RUSTC_OR_CLIPPY = $(CLIPPY_DRIVER) !! 480 export PERL PYTHON PYTHON2 PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX 577 else << 578 RUSTC_OR_CLIPPY_QUIET := RUSTC << 579 RUSTC_OR_CLIPPY = $(RUSTC) << 580 endif << 581 << 582 ifdef RUST_LIB_SRC << 583 export RUST_LIB_SRC << 584 endif << 585 << 586 # Allows the usage of unstable features in sta << 587 export RUSTC_BOOTSTRAP := 1 << 588 << 589 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K << 590 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q << 591 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS << 592 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF << 593 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ << 594 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD << 595 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS 481 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE 596 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS << 597 482 598 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC 483 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 599 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU 484 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 600 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF !! 485 export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN 601 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 486 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 602 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 487 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 603 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 488 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL >> 489 export KBUILD_ARFLAGS 604 490 605 # Files to ignore in find ... statements 491 # Files to ignore in find ... statements 606 492 607 export RCS_FIND_IGNORE := \( -name SCCS -o -na 493 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 608 -name CVS -o -name . 494 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 609 -prune -o 495 -prune -o >> 496 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ >> 497 --exclude CVS --exclude .pc --exclude .hg --exclude .git 610 498 611 # ============================================ 499 # =========================================================================== 612 # Rules shared between *config targets and bui 500 # Rules shared between *config targets and build targets 613 501 614 # Basic helpers built in scripts/basic/ 502 # Basic helpers built in scripts/basic/ 615 PHONY += scripts_basic 503 PHONY += scripts_basic 616 scripts_basic: 504 scripts_basic: 617 $(Q)$(MAKE) $(build)=scripts/basic 505 $(Q)$(MAKE) $(build)=scripts/basic >> 506 $(Q)rm -f .tmp_quiet_recordmcount 618 507 619 PHONY += outputmakefile 508 PHONY += outputmakefile 620 ifdef building_out_of_srctree << 621 # Before starting out-of-tree build, make sure << 622 # outputmakefile generates a Makefile in the o 509 # outputmakefile generates a Makefile in the output directory, if using a 623 # separate output directory. This allows conve 510 # separate output directory. This allows convenient use of make in the 624 # output directory. 511 # output directory. 625 # At the same time when output Makefile genera 512 # At the same time when output Makefile generated, generate .gitignore to 626 # ignore whole output directory 513 # ignore whole output directory 627 << 628 quiet_cmd_makefile = GEN Makefile << 629 cmd_makefile = { \ << 630 echo "\# Automatically generated by $( << 631 echo "include $(srctree)/Makefile"; \ << 632 } > Makefile << 633 << 634 outputmakefile: 514 outputmakefile: 635 @if [ -f $(srctree)/.config -o \ !! 515 ifdef building_out_of_srctree 636 -d $(srctree)/include/config << 637 -d $(srctree)/arch/$(SRCARCH) << 638 echo >&2 "***"; \ << 639 echo >&2 "*** The source tree << 640 echo >&2 "*** in $(abs_srctree << 641 echo >&2 "***"; \ << 642 false; \ << 643 fi << 644 $(Q)ln -fsn $(srctree) source 516 $(Q)ln -fsn $(srctree) source 645 $(call cmd,makefile) !! 517 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) 646 $(Q)test -e .gitignore || \ 518 $(Q)test -e .gitignore || \ 647 { echo "# this is build directory, ign 519 { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore 648 endif 520 endif 649 521 >> 522 ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),) >> 523 ifneq ($(CROSS_COMPILE),) >> 524 CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) >> 525 GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) >> 526 CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR) >> 527 GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) >> 528 endif >> 529 ifneq ($(GCC_TOOLCHAIN),) >> 530 CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN) >> 531 endif >> 532 ifeq ($(shell $(AS) --version 2>&1 | head -n 1 | grep clang),) >> 533 CLANG_FLAGS += -no-integrated-as >> 534 endif >> 535 CLANG_FLAGS += -Werror=unknown-warning-option >> 536 KBUILD_CFLAGS += $(CLANG_FLAGS) >> 537 KBUILD_AFLAGS += $(CLANG_FLAGS) >> 538 export CLANG_FLAGS >> 539 endif >> 540 650 # The expansion should be delayed until arch/$ 541 # The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 651 # Some architectures define CROSS_COMPILE in a 542 # Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 652 # CC_VERSION_TEXT is referenced from Kconfig ( 543 # CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 653 # and from include/config/auto.conf.cmd to det 544 # and from include/config/auto.conf.cmd to detect the compiler upgrade. 654 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC !! 545 CC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1) 655 << 656 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), << 657 include $(srctree)/scripts/Makefile.clang << 658 endif << 659 546 660 # Include this also for config targets because !! 547 ifeq ($(config-targets),1) 661 # cc-cross-prefix to determine CROSS_COMPILE. << 662 ifdef need-compiler << 663 include $(srctree)/scripts/Makefile.compiler << 664 endif << 665 << 666 ifdef config-build << 667 # ============================================ 548 # =========================================================================== 668 # *config targets only - make sure prerequisit 549 # *config targets only - make sure prerequisites are updated, and descend 669 # in scripts/kconfig to make the *config targe 550 # in scripts/kconfig to make the *config target 670 551 671 # Read arch-specific Makefile to set KBUILD_DE !! 552 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 672 # KBUILD_DEFCONFIG may point out an alternativ 553 # KBUILD_DEFCONFIG may point out an alternative default configuration 673 # used for 'make defconfig' 554 # used for 'make defconfig' 674 include $(srctree)/arch/$(SRCARCH)/Makefile !! 555 include arch/$(SRCARCH)/Makefile 675 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS 556 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 676 557 677 config: outputmakefile scripts_basic FORCE !! 558 config: scripts_basic outputmakefile FORCE 678 $(Q)$(MAKE) $(build)=scripts/kconfig $ 559 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 679 560 680 %config: outputmakefile scripts_basic FORCE !! 561 %config: scripts_basic outputmakefile FORCE 681 $(Q)$(MAKE) $(build)=scripts/kconfig $ 562 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 682 563 683 else #!config-build !! 564 else 684 # ============================================ 565 # =========================================================================== 685 # Build targets only - this includes vmlinux, !! 566 # Build targets only - this includes vmlinux, arch specific targets, clean 686 # targets and others. In general all targets e 567 # targets and others. In general all targets except *config targets. 687 568 688 # If building an external module we do not car 569 # If building an external module we do not care about the all: rule 689 # but instead __all depend on modules !! 570 # but instead _all depend on modules 690 PHONY += all 571 PHONY += all 691 ifeq ($(KBUILD_EXTMOD),) 572 ifeq ($(KBUILD_EXTMOD),) 692 __all: all !! 573 _all: all 693 else 574 else 694 __all: modules !! 575 _all: modules 695 endif 576 endif 696 577 697 targets := << 698 << 699 # Decide whether to build built-in, modular, o 578 # Decide whether to build built-in, modular, or both. 700 # Normally, just do built-in. 579 # Normally, just do built-in. 701 580 702 KBUILD_MODULES := 581 KBUILD_MODULES := 703 KBUILD_BUILTIN := 1 582 KBUILD_BUILTIN := 1 704 583 705 # If we have only "make modules", don't compil 584 # If we have only "make modules", don't compile built-in objects. >> 585 # When we're building modules with modversions, we need to consider >> 586 # the built-in objects during the descend as well, in order to >> 587 # make sure the checksums are up to date before we record them. >> 588 706 ifeq ($(MAKECMDGOALS),modules) 589 ifeq ($(MAKECMDGOALS),modules) 707 KBUILD_BUILTIN := !! 590 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 708 endif 591 endif 709 592 710 # If we have "make <whatever> modules", compil 593 # If we have "make <whatever> modules", compile modules 711 # in addition to whatever we do anyway. 594 # in addition to whatever we do anyway. 712 # Just "make" or "make all" shall build module 595 # Just "make" or "make all" shall build modules as well 713 596 714 ifneq ($(filter all modules nsdeps %compile_co !! 597 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 715 KBUILD_MODULES := 1 598 KBUILD_MODULES := 1 716 endif 599 endif 717 600 718 ifeq ($(MAKECMDGOALS),) 601 ifeq ($(MAKECMDGOALS),) 719 KBUILD_MODULES := 1 602 KBUILD_MODULES := 1 720 endif 603 endif 721 604 722 export KBUILD_MODULES KBUILD_BUILTIN 605 export KBUILD_MODULES KBUILD_BUILTIN 723 606 724 ifdef need-config !! 607 ifeq ($(dot-config),1) 725 include include/config/auto.conf 608 include include/config/auto.conf 726 endif 609 endif 727 610 728 ifeq ($(KBUILD_EXTMOD),) 611 ifeq ($(KBUILD_EXTMOD),) 729 # Objects we will link into vmlinux / subdirs 612 # Objects we will link into vmlinux / subdirs we need to visit 730 core-y := !! 613 init-y := init/ 731 drivers-y := !! 614 drivers-y := drivers/ sound/ >> 615 drivers-$(CONFIG_SAMPLES) += samples/ >> 616 drivers-$(CONFIG_KERNEL_HEADER_TEST) += include/ >> 617 net-y := net/ 732 libs-y := lib/ 618 libs-y := lib/ >> 619 core-y := usr/ >> 620 virt-y := virt/ 733 endif # KBUILD_EXTMOD 621 endif # KBUILD_EXTMOD 734 622 735 # The all: target is the default when no targe 623 # The all: target is the default when no target is given on the 736 # command line. 624 # command line. 737 # This allow a user to issue only 'make' to bu 625 # This allow a user to issue only 'make' to build a kernel including modules 738 # Defaults to vmlinux, but the arch makefile u 626 # Defaults to vmlinux, but the arch makefile usually adds further targets 739 all: vmlinux 627 all: vmlinux 740 628 741 CFLAGS_GCOV := -fprofile-arcs -ftest-cover !! 629 CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ 742 ifdef CONFIG_CC_IS_GCC !! 630 $(call cc-option,-fno-tree-loop-im) \ 743 CFLAGS_GCOV += -fno-tree-loop-im !! 631 $(call cc-disable-warning,maybe-uninitialized,) 744 endif << 745 export CFLAGS_GCOV 632 export CFLAGS_GCOV 746 633 747 # The arch Makefiles can override CC_FLAGS_FTR 634 # The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. 748 ifdef CONFIG_FUNCTION_TRACER 635 ifdef CONFIG_FUNCTION_TRACER 749 CC_FLAGS_FTRACE := -pg 636 CC_FLAGS_FTRACE := -pg 750 endif 637 endif 751 638 752 include $(srctree)/arch/$(SRCARCH)/Makefile !! 639 RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register >> 640 RETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register >> 641 RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk >> 642 RETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline >> 643 RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG))) >> 644 RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG))) >> 645 export RETPOLINE_CFLAGS >> 646 export RETPOLINE_VDSO_CFLAGS >> 647 >> 648 # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default >> 649 # values of the respective KBUILD_* variables >> 650 ARCH_CPPFLAGS := >> 651 ARCH_AFLAGS := >> 652 ARCH_CFLAGS := >> 653 include arch/$(SRCARCH)/Makefile 753 654 754 ifdef need-config !! 655 ifeq ($(dot-config),1) 755 ifdef may-sync-config !! 656 ifeq ($(may-sync-config),1) 756 # Read in dependencies to all Kconfig* files, 657 # Read in dependencies to all Kconfig* files, make sure to run syncconfig if 757 # changes are detected. This should be include 658 # changes are detected. This should be included after arch/$(SRCARCH)/Makefile 758 # because some architectures define CROSS_COMP 659 # because some architectures define CROSS_COMPILE there. 759 include include/config/auto.conf.cmd 660 include include/config/auto.conf.cmd 760 661 761 $(KCONFIG_CONFIG): 662 $(KCONFIG_CONFIG): 762 @echo >&2 '***' 663 @echo >&2 '***' 763 @echo >&2 '*** Configuration file "$@" 664 @echo >&2 '*** Configuration file "$@" not found!' 764 @echo >&2 '***' 665 @echo >&2 '***' 765 @echo >&2 '*** Please run some configu 666 @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or' 766 @echo >&2 '*** "make menuconfig" or "m 667 @echo >&2 '*** "make menuconfig" or "make xconfig").' 767 @echo >&2 '***' 668 @echo >&2 '***' 768 @/bin/false 669 @/bin/false 769 670 770 # The actual configuration files used during t 671 # The actual configuration files used during the build are stored in 771 # include/generated/ and include/config/. Upda 672 # include/generated/ and include/config/. Update them if .config is newer than 772 # include/config/auto.conf (which mirrors .con 673 # include/config/auto.conf (which mirrors .config). 773 # 674 # 774 # This exploits the 'multi-target pattern rule 675 # This exploits the 'multi-target pattern rule' trick. 775 # The syncconfig should be executed only once 676 # The syncconfig should be executed only once to make all the targets. 776 # (Note: use the grouped target '&:' when we b !! 677 %/auto.conf %/auto.conf.cmd %/tristate.conf: $(KCONFIG_CONFIG) 777 # << 778 # Do not use $(call cmd,...) here. That would << 779 # so you cannot notice that Kconfig is waiting << 780 %/config/auto.conf %/config/auto.conf.cmd %/ge << 781 $(Q)$(kecho) " SYNC $@" << 782 $(Q)$(MAKE) -f $(srctree)/Makefile syn 678 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 783 else # !may-sync-config !! 679 else 784 # External modules and some install targets ne 680 # External modules and some install targets need include/generated/autoconf.h 785 # and include/config/auto.conf but do not care 681 # and include/config/auto.conf but do not care if they are up-to-date. 786 # Use auto.conf to trigger the test 682 # Use auto.conf to trigger the test 787 PHONY += include/config/auto.conf 683 PHONY += include/config/auto.conf 788 684 789 include/config/auto.conf: 685 include/config/auto.conf: 790 @test -e include/generated/autoconf.h !! 686 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 791 echo >&2; 687 echo >&2; \ 792 echo >&2 " ERROR: Kernel configuratio 688 echo >&2 " ERROR: Kernel configuration is invalid."; \ 793 echo >&2 " include/generated/a 689 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 794 echo >&2 " Run 'make oldconfig 690 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 795 echo >&2 ; 691 echo >&2 ; \ 796 /bin/false) 692 /bin/false) 797 693 798 endif # may-sync-config 694 endif # may-sync-config 799 endif # need-config !! 695 endif # $(dot-config) 800 696 801 KBUILD_CFLAGS += -fno-delete-null-pointer-ch !! 697 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) >> 698 KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) >> 699 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) >> 700 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) >> 701 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) >> 702 >> 703 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE >> 704 KBUILD_CFLAGS += -Os >> 705 else >> 706 KBUILD_CFLAGS += -O2 >> 707 endif 802 708 803 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE !! 709 ifdef CONFIG_CC_DISABLE_WARN_MAYBE_UNINITIALIZED 804 KBUILD_CFLAGS += -O2 !! 710 KBUILD_CFLAGS += -Wno-maybe-uninitialized 805 KBUILD_RUSTFLAGS += -Copt-level=2 !! 711 endif 806 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE << 807 KBUILD_CFLAGS += -Os << 808 KBUILD_RUSTFLAGS += -Copt-level=s << 809 endif << 810 << 811 # Always set `debug-assertions` and `overflow- << 812 # depends on `opt-level` and `debug-assertions << 813 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( << 814 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C << 815 712 816 # Tell gcc to never replace conditional load w 713 # Tell gcc to never replace conditional load with a non-conditional one 817 ifdef CONFIG_CC_IS_GCC << 818 # gcc-10 renamed --param=allow-store-data-race << 819 # -fno-allow-store-data-races. << 820 KBUILD_CFLAGS += $(call cc-option,--param=al 714 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 821 KBUILD_CFLAGS += $(call cc-option,-fno-allow !! 715 822 endif !! 716 include scripts/Makefile.kcov >> 717 include scripts/Makefile.gcc-plugins 823 718 824 ifdef CONFIG_READABLE_ASM 719 ifdef CONFIG_READABLE_ASM 825 # Disable optimizations that make assembler li 720 # Disable optimizations that make assembler listings hard to read. 826 # reorder blocks reorders the control in the f 721 # reorder blocks reorders the control in the function 827 # ipa clone creates specialized cloned functio 722 # ipa clone creates specialized cloned functions 828 # partial inlining inlines only parts of funct 723 # partial inlining inlines only parts of functions 829 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- !! 724 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ >> 725 $(call cc-option,-fno-ipa-cp-clone,) \ >> 726 $(call cc-option,-fno-partial-inlining) 830 endif 727 endif 831 728 832 stackp-flags-y !! 729 ifneq ($(CONFIG_FRAME_WARN),0) >> 730 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) >> 731 endif >> 732 >> 733 stackp-flags-$(CONFIG_CC_HAS_STACKPROTECTOR_NONE) := -fno-stack-protector 833 stackp-flags-$(CONFIG_STACKPROTECTOR) 734 stackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector 834 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) 735 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong 835 736 836 KBUILD_CFLAGS += $(stackp-flags-y) 737 KBUILD_CFLAGS += $(stackp-flags-y) 837 738 838 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning !! 739 ifdef CONFIG_CC_IS_CLANG 839 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) !! 740 KBUILD_CPPFLAGS += -Qunused-arguments >> 741 KBUILD_CFLAGS += -Wno-format-invalid-specifier >> 742 KBUILD_CFLAGS += -Wno-gnu >> 743 # Quiet clang warning: comparison of unsigned expression < 0 is always false >> 744 KBUILD_CFLAGS += -Wno-tautological-compare >> 745 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the >> 746 # source of a reference will be _MergedGlobals and not on of the whitelisted names. >> 747 # See modpost pattern 2 >> 748 KBUILD_CFLAGS += -mno-global-merge >> 749 else >> 750 >> 751 # These warnings generated too much noise in a regular build. >> 752 # Use make W=1 to enable them (see scripts/Makefile.extrawarn) >> 753 KBUILD_CFLAGS += -Wno-unused-but-set-variable >> 754 >> 755 # Warn about unmarked fall-throughs in switch statement. >> 756 # Disabled for clang while comment to attribute conversion happens and >> 757 # https://github.com/ClangBuiltLinux/linux/issues/636 is discussed. >> 758 KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,) >> 759 endif 840 760 >> 761 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) 841 ifdef CONFIG_FRAME_POINTER 762 ifdef CONFIG_FRAME_POINTER 842 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 763 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 843 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y << 844 else 764 else 845 # Some targets (ARM with Thumb2, for example), 765 # Some targets (ARM with Thumb2, for example), can't be built with frame 846 # pointers. For those, we don't have FUNCTION 766 # pointers. For those, we don't have FUNCTION_TRACER automatically 847 # select FRAME_POINTER. However, FUNCTION_TRA 767 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 848 # incompatible with -fomit-frame-pointer with 768 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 849 # -fomit-frame-pointer with FUNCTION_TRACER. 769 # -fomit-frame-pointer with FUNCTION_TRACER. 850 # In the Rust target specification, "frame-poi << 851 # to "may-omit". << 852 ifndef CONFIG_FUNCTION_TRACER 770 ifndef CONFIG_FUNCTION_TRACER 853 KBUILD_CFLAGS += -fomit-frame-pointer 771 KBUILD_CFLAGS += -fomit-frame-pointer 854 endif 772 endif 855 endif 773 endif 856 774 857 # Initialize all stack variables with a 0xAA p !! 775 # Initialize all stack variables with a pattern, if desired. 858 ifdef CONFIG_INIT_STACK_ALL_PATTERN !! 776 ifdef CONFIG_INIT_STACK_ALL 859 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat 777 KBUILD_CFLAGS += -ftrivial-auto-var-init=pattern 860 endif 778 endif 861 779 862 # Initialize all stack variables with a zero v !! 780 DEBUG_CFLAGS := $(call cc-option, -fno-var-tracking-assignments) 863 ifdef CONFIG_INIT_STACK_ALL_ZERO !! 781 864 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer !! 782 ifdef CONFIG_DEBUG_INFO 865 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER !! 783 ifdef CONFIG_DEBUG_INFO_SPLIT 866 # https://github.com/llvm/llvm-project/issues/ !! 784 DEBUG_CFLAGS += -gsplit-dwarf 867 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi !! 785 else 868 export CC_AUTO_VAR_INIT_ZERO_ENABLER !! 786 DEBUG_CFLAGS += -g 869 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA !! 787 endif >> 788 KBUILD_AFLAGS += -Wa,-gdwarf-2 870 endif 789 endif >> 790 ifdef CONFIG_DEBUG_INFO_DWARF4 >> 791 DEBUG_CFLAGS += -gdwarf-4 871 endif 792 endif 872 793 873 # While VLAs have been removed, GCC produces u !! 794 ifdef CONFIG_DEBUG_INFO_REDUCED 874 # for the randomize_kstack_offset feature. Dis !! 795 DEBUG_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 875 KBUILD_CFLAGS += $(call cc-option, -fno-stac !! 796 $(call cc-option,-fno-var-tracking) 876 << 877 # Clear used registers at func exit (to reduce << 878 ifdef CONFIG_ZERO_CALL_USED_REGS << 879 KBUILD_CFLAGS += -fzero-call-used-regs=used- << 880 endif 797 endif 881 798 >> 799 KBUILD_CFLAGS += $(DEBUG_CFLAGS) >> 800 export DEBUG_CFLAGS >> 801 882 ifdef CONFIG_FUNCTION_TRACER 802 ifdef CONFIG_FUNCTION_TRACER 883 ifdef CONFIG_FTRACE_MCOUNT_USE_CC !! 803 ifdef CONFIG_FTRACE_MCOUNT_RECORD 884 CC_FLAGS_FTRACE += -mrecord-mcount !! 804 # gcc 5 supports generating the mcount tables directly >> 805 ifeq ($(call cc-option-yn,-mrecord-mcount),y) >> 806 CC_FLAGS_FTRACE += -mrecord-mcount >> 807 export CC_USING_RECORD_MCOUNT := 1 >> 808 endif 885 ifdef CONFIG_HAVE_NOP_MCOUNT 809 ifdef CONFIG_HAVE_NOP_MCOUNT 886 ifeq ($(call cc-option-yn, -mnop-mcount),y 810 ifeq ($(call cc-option-yn, -mnop-mcount),y) 887 CC_FLAGS_FTRACE += -mnop-mcount 811 CC_FLAGS_FTRACE += -mnop-mcount 888 CC_FLAGS_USING += -DCC_USING_NOP_MCOU 812 CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 889 endif 813 endif 890 endif 814 endif 891 endif 815 endif 892 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL << 893 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT << 894 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 895 endif << 896 endif << 897 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT << 898 ifdef CONFIG_HAVE_C_RECORDMCOUNT << 899 BUILD_C_RECORDMCOUNT := y << 900 export BUILD_C_RECORDMCOUNT << 901 endif << 902 endif << 903 ifdef CONFIG_HAVE_FENTRY 816 ifdef CONFIG_HAVE_FENTRY 904 # s390-linux-gnu-gcc did not support -mfentr << 905 ifeq ($(call cc-option-yn, -mfentry),y) 817 ifeq ($(call cc-option-yn, -mfentry),y) 906 CC_FLAGS_FTRACE += -mfentry 818 CC_FLAGS_FTRACE += -mfentry 907 CC_FLAGS_USING += -DCC_USING_FENTRY 819 CC_FLAGS_USING += -DCC_USING_FENTRY 908 endif 820 endif 909 endif 821 endif 910 export CC_FLAGS_FTRACE 822 export CC_FLAGS_FTRACE 911 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA 823 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 912 KBUILD_AFLAGS += $(CC_FLAGS_USING) 824 KBUILD_AFLAGS += $(CC_FLAGS_USING) >> 825 ifdef CONFIG_DYNAMIC_FTRACE >> 826 ifdef CONFIG_HAVE_C_RECORDMCOUNT >> 827 BUILD_C_RECORDMCOUNT := y >> 828 export BUILD_C_RECORDMCOUNT >> 829 endif >> 830 endif 913 endif 831 endif 914 832 915 # We trigger additional mismatches with less i 833 # We trigger additional mismatches with less inlining 916 ifdef CONFIG_DEBUG_SECTION_MISMATCH 834 ifdef CONFIG_DEBUG_SECTION_MISMATCH 917 KBUILD_CFLAGS += -fno-inline-functions-called- !! 835 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 918 endif 836 endif 919 837 920 # `rustc`'s `-Zfunction-sections` applies to d << 921 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 838 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 922 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f 839 KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 923 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections << 924 LDFLAGS_vmlinux += --gc-sections 840 LDFLAGS_vmlinux += --gc-sections 925 endif 841 endif 926 842 927 ifdef CONFIG_SHADOW_CALL_STACK !! 843 ifdef CONFIG_LIVEPATCH 928 ifndef CONFIG_DYNAMIC_SCS !! 844 KBUILD_CFLAGS += $(call cc-option, -flive-patching=inline-clone) 929 CC_FLAGS_SCS := -fsanitize=shadow-call-stac << 930 KBUILD_CFLAGS += $(CC_FLAGS_SCS) << 931 endif << 932 export CC_FLAGS_SCS << 933 endif << 934 << 935 ifdef CONFIG_LTO_CLANG << 936 ifdef CONFIG_LTO_CLANG_THIN << 937 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit << 938 else << 939 CC_FLAGS_LTO := -flto << 940 endif << 941 CC_FLAGS_LTO += -fvisibility=hidden << 942 << 943 # Limit inlining across translation units to r << 944 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 << 945 endif << 946 << 947 ifdef CONFIG_LTO << 948 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) << 949 KBUILD_AFLAGS += -fno-lto << 950 export CC_FLAGS_LTO << 951 endif 845 endif 952 846 953 ifdef CONFIG_CFI_CLANG !! 847 # arch Makefile may override CC so keep this after arch Makefile is included 954 CC_FLAGS_CFI := -fsanitize=kcfi !! 848 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 955 KBUILD_CFLAGS += $(CC_FLAGS_CFI) << 956 export CC_FLAGS_CFI << 957 endif << 958 849 959 # Architectures can define flags to add/remove !! 850 # warn about C99 declaration after statement 960 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN !! 851 KBUILD_CFLAGS += -Wdeclaration-after-statement 961 export CC_FLAGS_FPU << 962 export CC_FLAGS_NO_FPU << 963 852 964 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) !! 853 # Variable Length Arrays (VLAs) should not be used anywhere in the kernel 965 # Set the minimal function alignment. Use the !! 854 KBUILD_CFLAGS += -Wvla 966 # -fmin-function-alignment if it is available, << 967 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME << 968 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT << 969 KBUILD_CFLAGS += -fmin-function-alignment=$(CO << 970 else << 971 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU << 972 endif << 973 endif << 974 855 975 # arch Makefile may override CC so keep this a !! 856 # disable pointer signed / unsigned warnings in gcc 4.0 976 NOSTDINC_FLAGS += -nostdinc !! 857 KBUILD_CFLAGS += -Wno-pointer-sign 977 858 978 # To gain proper coverage for CONFIG_UBSAN_BOU !! 859 # disable stringop warnings in gcc 8+ 979 # the kernel uses only C99 flexible arrays for !! 860 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 980 # arrays. Enforce this for everything that may << 981 # perform bounds checking. << 982 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl << 983 << 984 #Currently, disable -Wstringop-overflow for GC << 985 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW << 986 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + << 987 861 988 # disable invalid "can't wrap" optimizations f 862 # disable invalid "can't wrap" optimizations for signed / pointers 989 KBUILD_CFLAGS += -fno-strict-overflow !! 863 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) >> 864 >> 865 # clang sets -fmerge-all-constants by default as optimization, but this >> 866 # is non-conforming behavior for C and in fact breaks the kernel, so we >> 867 # need to disable it here generally. >> 868 KBUILD_CFLAGS += $(call cc-option,-fno-merge-all-constants) >> 869 >> 870 # for gcc -fno-merge-all-constants disables everything, but it is fine >> 871 # to have actual conforming behavior enabled. >> 872 KBUILD_CFLAGS += $(call cc-option,-fmerge-constants) 990 873 991 # Make sure -fstack-check isn't enabled (like 874 # Make sure -fstack-check isn't enabled (like gentoo apparently did) 992 KBUILD_CFLAGS += -fno-stack-check !! 875 KBUILD_CFLAGS += $(call cc-option,-fno-stack-check,) 993 876 994 # conserve stack if available 877 # conserve stack if available 995 ifdef CONFIG_CC_IS_GCC !! 878 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 996 KBUILD_CFLAGS += -fconserve-stack !! 879 997 endif !! 880 # Prohibit date/time macros, which would make the build non-deterministic >> 881 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) >> 882 >> 883 # enforce correct pointer usage >> 884 KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) >> 885 >> 886 # Require designated initializers for all marked structures >> 887 KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 998 888 999 # change __FILE__ to the relative path from th 889 # change __FILE__ to the relative path from the srctree 1000 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p !! 890 KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 1001 891 1002 # include additional Makefiles when needed !! 892 # ensure -fcf-protection is disabled when using retpoline as it is 1003 include-y := scripts/Ma !! 893 # incompatible with -mindirect-branch=thunk-extern 1004 include-$(CONFIG_DEBUG_INFO) += scripts/Ma !! 894 ifdef CONFIG_RETPOLINE 1005 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma !! 895 KBUILD_CFLAGS += $(call cc-option,-fcf-protection=none) 1006 include-$(CONFIG_KASAN) += scripts/Ma << 1007 include-$(CONFIG_KCSAN) += scripts/Ma << 1008 include-$(CONFIG_KMSAN) += scripts/Ma << 1009 include-$(CONFIG_UBSAN) += scripts/Ma << 1010 include-$(CONFIG_KCOV) += scripts/Ma << 1011 include-$(CONFIG_RANDSTRUCT) += scripts/Ma << 1012 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma << 1013 << 1014 include $(addprefix $(srctree)/, $(include-y) << 1015 << 1016 # scripts/Makefile.gcc-plugins is intentional << 1017 # Do not add $(call cc-option,...) below this << 1018 # from the clean source tree, the GCC plugins << 1019 << 1020 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS << 1021 KBUILD_CPPFLAGS += $(KCPPFLAGS) << 1022 KBUILD_AFLAGS += $(KAFLAGS) << 1023 KBUILD_CFLAGS += $(KCFLAGS) << 1024 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) << 1025 << 1026 KBUILD_LDFLAGS_MODULE += --build-id=sha1 << 1027 LDFLAGS_vmlinux += --build-id=sha1 << 1028 << 1029 KBUILD_LDFLAGS += -z noexecstack << 1030 ifeq ($(CONFIG_LD_IS_BFD),y) << 1031 KBUILD_LDFLAGS += $(call ld-option,--no-warn << 1032 endif 896 endif 1033 897 1034 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) !! 898 # use the deterministic mode of AR if available 1035 LDFLAGS_vmlinux += -X !! 899 KBUILD_ARFLAGS := $(call ar-option,D) 1036 endif << 1037 900 1038 ifeq ($(CONFIG_RELR),y) !! 901 include scripts/Makefile.kasan 1039 # ld.lld before 15 did not support -z pack-re !! 902 include scripts/Makefile.extrawarn 1040 LDFLAGS_vmlinux += $(call ld-option,--pack-dy !! 903 include scripts/Makefile.ubsan 1041 endif << 1042 904 1043 # We never want expected sections to be place !! 905 # Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the 1044 # linker. All sections should be explicitly n !! 906 # last assignments 1045 ifdef CONFIG_LD_ORPHAN_WARN !! 907 KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) 1046 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG !! 908 KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) 1047 endif !! 909 KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) 1048 910 1049 # Align the bit size of userspace programs wi !! 911 KBUILD_LDFLAGS_MODULE += --build-id 1050 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta !! 912 LDFLAGS_vmlinux += --build-id 1051 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta << 1052 913 1053 # make the checker run with the right archite !! 914 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1054 CHECKFLAGS += --arch=$(ARCH) !! 915 LDFLAGS_vmlinux += $(call ld-option, -X,) >> 916 endif 1055 917 1056 # insure the checker run with the right endia 918 # insure the checker run with the right endianness 1057 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- 919 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 1058 920 1059 # the checker needs the correct machine size 921 # the checker needs the correct machine size 1060 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 922 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1061 923 1062 # Default kernel image to build when no speci 924 # Default kernel image to build when no specific target is given. 1063 # KBUILD_IMAGE may be overruled on the comman 925 # KBUILD_IMAGE may be overruled on the command line or 1064 # set in the environment 926 # set in the environment 1065 # Also any assignments in arch/$(ARCH)/Makefi 927 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 1066 # this default value 928 # this default value 1067 export KBUILD_IMAGE ?= vmlinux 929 export KBUILD_IMAGE ?= vmlinux 1068 930 1069 # 931 # 1070 # INSTALL_PATH specifies where to place the u 932 # INSTALL_PATH specifies where to place the updated kernel and system map 1071 # images. Default is /boot, but you can set i 933 # images. Default is /boot, but you can set it to other values 1072 export INSTALL_PATH ?= /boot 934 export INSTALL_PATH ?= /boot 1073 935 1074 # 936 # 1075 # INSTALL_DTBS_PATH specifies a prefix for re 937 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1076 # Like INSTALL_MOD_PATH, it isn't defined in 938 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1077 # an argument if needed. Otherwise it default 939 # an argument if needed. Otherwise it defaults to the kernel install path 1078 # 940 # 1079 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d 941 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1080 942 1081 # 943 # 1082 # INSTALL_MOD_PATH specifies a prefix to MODL 944 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1083 # relocations required by build roots. This 945 # relocations required by build roots. This is not defined in the 1084 # makefile but the argument can be passed to 946 # makefile but the argument can be passed to make if needed. 1085 # 947 # 1086 948 1087 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 949 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1088 export MODLIB 950 export MODLIB 1089 951 1090 PHONY += prepare0 !! 952 # >> 953 # INSTALL_MOD_STRIP, if defined, will cause modules to be >> 954 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then >> 955 # the default option --strip-debug will be used. Otherwise, >> 956 # INSTALL_MOD_STRIP value will be used as the options to the strip command. >> 957 >> 958 ifdef INSTALL_MOD_STRIP >> 959 ifeq ($(INSTALL_MOD_STRIP),1) >> 960 mod_strip_cmd = $(STRIP) --strip-debug >> 961 else >> 962 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) >> 963 endif # INSTALL_MOD_STRIP=1 >> 964 else >> 965 mod_strip_cmd = true >> 966 endif # INSTALL_MOD_STRIP >> 967 export mod_strip_cmd >> 968 >> 969 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed >> 970 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP >> 971 # or CONFIG_MODULE_COMPRESS_XZ. >> 972 >> 973 mod_compress_cmd = true >> 974 ifdef CONFIG_MODULE_COMPRESS >> 975 ifdef CONFIG_MODULE_COMPRESS_GZIP >> 976 mod_compress_cmd = gzip -n -f >> 977 endif # CONFIG_MODULE_COMPRESS_GZIP >> 978 ifdef CONFIG_MODULE_COMPRESS_XZ >> 979 mod_compress_cmd = xz -f >> 980 endif # CONFIG_MODULE_COMPRESS_XZ >> 981 endif # CONFIG_MODULE_COMPRESS >> 982 export mod_compress_cmd 1091 983 1092 export extmod_prefix = $(if $(KBUILD_EXTMOD), !! 984 ifdef CONFIG_MODULE_SIG_ALL 1093 export MODORDER := $(extmod_prefix)modules.or !! 985 $(eval $(call config_filename,MODULE_SIG_KEY)) 1094 export MODULES_NSDEPS := $(extmod_prefix)modu << 1095 986 1096 ifeq ($(KBUILD_EXTMOD),) !! 987 mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 >> 988 else >> 989 mod_sign_cmd = true >> 990 endif >> 991 export mod_sign_cmd 1097 992 1098 build-dir := . !! 993 HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf) 1099 clean-dirs := $(sort . Documentation \ << 1100 $(patsubst %/,%,$(filter << 1101 $(drivers-) $(libs-)) << 1102 << 1103 export ARCH_CORE := $(core-y) << 1104 export ARCH_LIB := $(filter %/, $(lib << 1105 export ARCH_DRIVERS := $(drivers-y) $(dri << 1106 # Externally visible symbols (used by link-vm << 1107 994 1108 KBUILD_VMLINUX_OBJS := ./built-in.a !! 995 ifdef CONFIG_STACK_VALIDATION 1109 ifdef CONFIG_MODULES !! 996 has_libelf := $(call try-run,\ 1110 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a !! 997 echo "int main() {}" | $(HOSTCC) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0) 1111 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib !! 998 ifeq ($(has_libelf),1) 1112 else !! 999 objtool_target := tools/objtool FORCE 1113 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, !! 1000 else >> 1001 SKIP_STACK_VALIDATION := 1 >> 1002 export SKIP_STACK_VALIDATION >> 1003 endif 1114 endif 1004 endif 1115 1005 1116 export KBUILD_VMLINUX_LIBS !! 1006 PHONY += prepare0 >> 1007 >> 1008 export MODORDER := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)modules.order >> 1009 >> 1010 ifeq ($(KBUILD_EXTMOD),) >> 1011 core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ >> 1012 >> 1013 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ >> 1014 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ >> 1015 $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) >> 1016 >> 1017 vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \ >> 1018 $(patsubst %/,%,$(filter %/, $(init-) $(core-) \ >> 1019 $(drivers-) $(net-) $(libs-) $(virt-)))) >> 1020 >> 1021 init-y := $(patsubst %/, %/built-in.a, $(init-y)) >> 1022 core-y := $(patsubst %/, %/built-in.a, $(core-y)) >> 1023 drivers-y := $(patsubst %/, %/built-in.a, $(drivers-y)) >> 1024 net-y := $(patsubst %/, %/built-in.a, $(net-y)) >> 1025 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) >> 1026 libs-y2 := $(patsubst %/, %/built-in.a, $(filter-out %.a, $(libs-y))) >> 1027 virt-y := $(patsubst %/, %/built-in.a, $(virt-y)) >> 1028 >> 1029 # Externally visible symbols (used by link-vmlinux.sh) >> 1030 export KBUILD_VMLINUX_OBJS := $(head-y) $(init-y) $(core-y) $(libs-y2) \ >> 1031 $(drivers-y) $(net-y) $(virt-y) >> 1032 export KBUILD_VMLINUX_LIBS := $(libs-y1) 1117 export KBUILD_LDS := arch/$(SRCARCH) 1033 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds >> 1034 export LDFLAGS_vmlinux >> 1035 # used by scripts/package/Makefile >> 1036 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools) 1118 1037 >> 1038 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) >> 1039 >> 1040 # Recurse until adjust_autoksyms.sh is satisfied >> 1041 PHONY += autoksyms_recursive 1119 ifdef CONFIG_TRIM_UNUSED_KSYMS 1042 ifdef CONFIG_TRIM_UNUSED_KSYMS >> 1043 autoksyms_recursive: $(vmlinux-deps) modules.order >> 1044 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ >> 1045 "$(MAKE) -f $(srctree)/Makefile vmlinux" >> 1046 endif >> 1047 1120 # For the kernel to actually contain only the 1048 # For the kernel to actually contain only the needed exported symbols, 1121 # we have to build modules as well to determi 1049 # we have to build modules as well to determine what those symbols are. 1122 KBUILD_MODULES := 1 !! 1050 # (this can be evaluated only once include/config/auto.conf has been included) >> 1051 ifdef CONFIG_TRIM_UNUSED_KSYMS >> 1052 KBUILD_MODULES := 1 1123 endif 1053 endif 1124 1054 1125 # '$(AR) mPi' needs 'T' to workaround the bug !! 1055 autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) 1126 quiet_cmd_ar_vmlinux.a = AR $@ << 1127 cmd_ar_vmlinux.a = \ << 1128 rm -f $@; \ << 1129 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS << 1130 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) << 1131 << 1132 targets += vmlinux.a << 1133 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea << 1134 $(call if_changed,ar_vmlinux.a) << 1135 << 1136 PHONY += vmlinux_o << 1137 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) << 1138 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1139 1056 1140 vmlinux.o modules.builtin.modinfo modules.bui !! 1057 $(autoksyms_h): 1141 @: !! 1058 $(Q)mkdir -p $(dir $@) >> 1059 $(Q)touch $@ 1142 1060 1143 PHONY += vmlinux !! 1061 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) 1144 # LDFLAGS_vmlinux in the top Makefile defines !! 1062 1145 # not for decompressors. LDFLAGS_vmlinux in a !! 1063 # Final link of vmlinux with optional arch pass after final link 1146 # unrelated; the decompressors just happen to !! 1064 cmd_link-vmlinux = \ 1147 # arch/*/boot/compressed/vmlinux. !! 1065 $(CONFIG_SHELL) $< $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_vmlinux) ; \ 1148 # Export LDFLAGS_vmlinux only to scripts/Make !! 1066 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1149 # !! 1067 1150 # _LDFLAGS_vmlinux is a workaround for the 'p !! 1068 vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE 1151 # https://savannah.gnu.org/bugs/?61463 !! 1069 +$(call if_changed,link-vmlinux) 1152 # For Make > 4.4, the following simple code w !! 1070 1153 # vmlinux: private export LDFLAGS_vmlinux := !! 1071 targets := vmlinux 1154 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG << 1155 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ << 1156 vmlinux: vmlinux.o $(KBUILD_LDS) modpost << 1157 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1158 1072 1159 # The actual objects are generated when desce 1073 # The actual objects are generated when descending, 1160 # make sure no implicit rule kicks in 1074 # make sure no implicit rule kicks in 1161 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 1075 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 1162 1076 1163 ifeq ($(origin KERNELRELEASE),file) !! 1077 # Handle descending into subdirectories listed in $(vmlinux-dirs) 1164 filechk_kernel.release = $(srctree)/scripts/s !! 1078 # Preset locale variables to speed up the build process. Limit locale 1165 else !! 1079 # tweaks to this spot to avoid wrong language settings when running 1166 filechk_kernel.release = echo $(KERNELRELEASE !! 1080 # make menuconfig etc. 1167 endif !! 1081 # Error messages still appears in the original language >> 1082 >> 1083 PHONY += $(vmlinux-dirs) >> 1084 $(vmlinux-dirs): prepare >> 1085 $(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1 >> 1086 >> 1087 filechk_kernel.release = \ >> 1088 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1168 1089 1169 # Store (new) KERNELRELEASE string in include 1090 # Store (new) KERNELRELEASE string in include/config/kernel.release 1170 include/config/kernel.release: FORCE 1091 include/config/kernel.release: FORCE 1171 $(call filechk,kernel.release) 1092 $(call filechk,kernel.release) 1172 1093 1173 # Additional helpers built in scripts/ 1094 # Additional helpers built in scripts/ 1174 # Carefully list dependencies so we do not tr 1095 # Carefully list dependencies so we do not try to build scripts twice 1175 # in parallel 1096 # in parallel 1176 PHONY += scripts 1097 PHONY += scripts 1177 scripts: scripts_basic scripts_dtc 1098 scripts: scripts_basic scripts_dtc 1178 $(Q)$(MAKE) $(build)=$(@) 1099 $(Q)$(MAKE) $(build)=$(@) 1179 1100 1180 # Things we need to do before we recursively 1101 # Things we need to do before we recursively start building the kernel 1181 # or the modules are listed in "prepare". 1102 # or the modules are listed in "prepare". 1182 # A multi level approach is used. prepareN is 1103 # A multi level approach is used. prepareN is processed before prepareN-1. 1183 # archprepare is used in arch Makefiles and w 1104 # archprepare is used in arch Makefiles and when processed asm symlink, 1184 # version.h and scripts_basic is processed / 1105 # version.h and scripts_basic is processed / created. 1185 1106 1186 PHONY += prepare archprepare !! 1107 PHONY += prepare archprepare prepare3 1187 1108 1188 archprepare: outputmakefile archheaders archs !! 1109 # prepare3 is used to check if we are building in a separate output directory, 1189 asm-generic $(version_h) include/gene !! 1110 # and if so do: 1190 include/generated/compile.h include/g !! 1111 # 1) Check that make has not been executed in the kernel src $(srctree) >> 1112 prepare3: include/config/kernel.release >> 1113 ifdef building_out_of_srctree >> 1114 @$(kecho) ' Using $(srctree) as source for kernel' >> 1115 $(Q)if [ -f $(srctree)/.config -o \ >> 1116 -d $(srctree)/include/config -o \ >> 1117 -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \ >> 1118 echo >&2 " $(srctree) is not clean, please run 'make ARCH=$(ARCH) mrproper'"; \ >> 1119 echo >&2 " in the '$(srctree)' directory.";\ >> 1120 /bin/false; \ >> 1121 fi; >> 1122 endif >> 1123 >> 1124 archprepare: archheaders archscripts scripts prepare3 outputmakefile \ >> 1125 asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h 1191 1126 1192 prepare0: archprepare 1127 prepare0: archprepare 1193 $(Q)$(MAKE) $(build)=scripts/mod 1128 $(Q)$(MAKE) $(build)=scripts/mod 1194 $(Q)$(MAKE) $(build)=. prepare !! 1129 $(Q)$(MAKE) $(build)=. 1195 1130 1196 # All the preparing.. 1131 # All the preparing.. 1197 prepare: prepare0 !! 1132 prepare: prepare0 prepare-objtool 1198 ifdef CONFIG_RUST << 1199 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1200 $(Q)$(MAKE) $(build)=rust << 1201 endif << 1202 << 1203 PHONY += remove-stale-files << 1204 remove-stale-files: << 1205 $(Q)$(srctree)/scripts/remove-stale-f << 1206 1133 1207 # Support for using generic headers in asm-ge 1134 # Support for using generic headers in asm-generic 1208 asm-generic := -f $(srctree)/scripts/Makefile !! 1135 asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj 1209 1136 1210 PHONY += asm-generic uapi-asm-generic 1137 PHONY += asm-generic uapi-asm-generic 1211 asm-generic: uapi-asm-generic 1138 asm-generic: uapi-asm-generic 1212 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1139 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \ 1213 generic=include/asm-generic 1140 generic=include/asm-generic 1214 uapi-asm-generic: 1141 uapi-asm-generic: 1215 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC 1142 $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \ 1216 generic=include/uapi/asm-generic 1143 generic=include/uapi/asm-generic 1217 1144 >> 1145 PHONY += prepare-objtool >> 1146 prepare-objtool: $(objtool_target) >> 1147 ifeq ($(SKIP_STACK_VALIDATION),1) >> 1148 ifdef CONFIG_UNWINDER_ORC >> 1149 @echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1150 @false >> 1151 else >> 1152 @echo "warning: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1153 endif >> 1154 endif >> 1155 1218 # Generate some files 1156 # Generate some files 1219 # ------------------------------------------- 1157 # --------------------------------------------------------------------------- 1220 1158 1221 # KERNELRELEASE can change from a few differe 1159 # KERNELRELEASE can change from a few different places, meaning version.h 1222 # needs to be updated, so this check is force 1160 # needs to be updated, so this check is forced on all builds 1223 1161 1224 uts_len := 64 1162 uts_len := 64 1225 define filechk_utsrelease.h 1163 define filechk_utsrelease.h 1226 if [ `echo -n "$(KERNELRELEASE)" | wc 1164 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1227 echo '"$(KERNELRELEASE)" exceeds $( 1165 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1228 exit 1; 1166 exit 1; \ 1229 fi; 1167 fi; \ 1230 echo \#define UTS_RELEASE \"$(KERNELR 1168 echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" 1231 endef 1169 endef 1232 1170 1233 define filechk_version.h 1171 define filechk_version.h 1234 if [ $(SUBLEVEL) -gt 255 ]; then !! 1172 echo \#define LINUX_VERSION_CODE $(shell \ 1235 echo \#define LINUX_VERSION_C !! 1173 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1236 expr $(VERSION) \* 65536 + $( !! 1174 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))' 1237 else << 1238 echo \#define LINUX_VERSION_C << 1239 expr $(VERSION) \* 65536 + $( << 1240 fi; << 1241 echo '#define KERNEL_VERSION(a,b,c) ( << 1242 ((c) > 255 ? 255 : (c)))'; << 1243 echo \#define LINUX_VERSION_MAJOR $(V << 1244 echo \#define LINUX_VERSION_PATCHLEVE << 1245 echo \#define LINUX_VERSION_SUBLEVEL << 1246 endef 1175 endef 1247 1176 1248 $(version_h): private PATCHLEVEL := $(or $(PA << 1249 $(version_h): private SUBLEVEL := $(or $(SUBL << 1250 $(version_h): FORCE 1177 $(version_h): FORCE 1251 $(call filechk,version.h) 1178 $(call filechk,version.h) >> 1179 $(Q)rm -f $(old_version_h) 1252 1180 1253 include/generated/utsrelease.h: include/confi 1181 include/generated/utsrelease.h: include/config/kernel.release FORCE 1254 $(call filechk,utsrelease.h) 1182 $(call filechk,utsrelease.h) 1255 1183 1256 filechk_compile.h = $(srctree)/scripts/mkcomp << 1257 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION << 1258 << 1259 include/generated/compile.h: FORCE << 1260 $(call filechk,compile.h) << 1261 << 1262 PHONY += headerdep 1184 PHONY += headerdep 1263 headerdep: 1185 headerdep: 1264 $(Q)find $(srctree)/include/ -name '* 1186 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1265 $(srctree)/scripts/headerdep.pl -I$(s 1187 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1266 1188 1267 # ------------------------------------------- 1189 # --------------------------------------------------------------------------- 1268 # Kernel headers 1190 # Kernel headers 1269 1191 1270 #Default location for installed headers 1192 #Default location for installed headers 1271 export INSTALL_HDR_PATH = $(objtree)/usr 1193 export INSTALL_HDR_PATH = $(objtree)/usr 1272 1194 1273 quiet_cmd_headers_install = INSTALL $(INSTALL 1195 quiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include 1274 cmd_headers_install = \ 1196 cmd_headers_install = \ 1275 mkdir -p $(INSTALL_HDR_PATH); \ 1197 mkdir -p $(INSTALL_HDR_PATH); \ 1276 rsync -mrl --include='*/' --include=' 1198 rsync -mrl --include='*/' --include='*\.h' --exclude='*' \ 1277 usr/include $(INSTALL_HDR_PATH) 1199 usr/include $(INSTALL_HDR_PATH) 1278 1200 1279 PHONY += headers_install 1201 PHONY += headers_install 1280 headers_install: headers 1202 headers_install: headers 1281 $(call cmd,headers_install) 1203 $(call cmd,headers_install) 1282 1204 1283 PHONY += archheaders archscripts 1205 PHONY += archheaders archscripts 1284 1206 1285 hdr-inst := -f $(srctree)/scripts/Makefile.he 1207 hdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj 1286 1208 1287 PHONY += headers 1209 PHONY += headers 1288 headers: $(version_h) scripts_unifdef uapi-as 1210 headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts 1289 $(if $(filter um, $(SRCARCH)), $(erro !! 1211 $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ >> 1212 $(error Headers not exportable for the $(SRCARCH) architecture)) 1290 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1213 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1291 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC 1214 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi 1292 1215 >> 1216 PHONY += headers_check >> 1217 headers_check: headers >> 1218 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 >> 1219 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi HDRCHECK=1 >> 1220 1293 ifdef CONFIG_HEADERS_INSTALL 1221 ifdef CONFIG_HEADERS_INSTALL 1294 prepare: headers 1222 prepare: headers 1295 endif 1223 endif 1296 1224 >> 1225 ifdef CONFIG_HEADERS_CHECK >> 1226 all: headers_check >> 1227 endif >> 1228 1297 PHONY += scripts_unifdef 1229 PHONY += scripts_unifdef 1298 scripts_unifdef: scripts_basic 1230 scripts_unifdef: scripts_basic 1299 $(Q)$(MAKE) $(build)=scripts scripts/ 1231 $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1300 1232 1301 # ------------------------------------------- 1233 # --------------------------------------------------------------------------- 1302 # Install << 1303 << 1304 # Many distributions have the custom install << 1305 # If DKMS is installed, 'make install' will e << 1306 # to this Makefile to build and install exter << 1307 # Cancel sub_make_done so that options such a << 1308 << 1309 quiet_cmd_install = INSTALL $(INSTALL_PATH) << 1310 cmd_install = unset sub_make_done; $(sr << 1311 << 1312 # ------------------------------------------- << 1313 # vDSO install << 1314 << 1315 PHONY += vdso_install << 1316 vdso_install: export INSTALL_FILES = $(vdso-i << 1317 vdso_install: << 1318 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1319 << 1320 # ------------------------------------------- << 1321 # Tools << 1322 << 1323 ifdef CONFIG_OBJTOOL << 1324 prepare: tools/objtool << 1325 endif << 1326 << 1327 ifdef CONFIG_BPF << 1328 ifdef CONFIG_DEBUG_INFO_BTF << 1329 prepare: tools/bpf/resolve_btfids << 1330 endif << 1331 endif << 1332 << 1333 # The tools build system is not a part of Kbu << 1334 # its own unique issues. If you need to integ << 1335 # please consider locating that tool outside << 1336 # standard Kbuild "hostprogs" syntax instead << 1337 # here. See Documentation/kbuild/makefiles.rs << 1338 << 1339 PHONY += resolve_btfids_clean << 1340 << 1341 resolve_btfids_O = $(abspath $(objtree))/tool << 1342 << 1343 # tools/bpf/resolve_btfids directory might no << 1344 # in output directory, skip its clean in that << 1345 resolve_btfids_clean: << 1346 ifneq ($(wildcard $(resolve_btfids_O)),) << 1347 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ << 1348 endif << 1349 << 1350 # Clear a bunch of variables before executing << 1351 ifeq ($(quiet),silent_) << 1352 tools_silent=s << 1353 endif << 1354 << 1355 tools/: FORCE << 1356 $(Q)mkdir -p $(objtree)/tools << 1357 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1358 << 1359 tools/%: FORCE << 1360 $(Q)mkdir -p $(objtree)/tools << 1361 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1362 << 1363 # ------------------------------------------- << 1364 # Kernel selftest 1234 # Kernel selftest 1365 1235 1366 PHONY += kselftest 1236 PHONY += kselftest 1367 kselftest: headers !! 1237 kselftest: 1368 $(Q)$(MAKE) -C $(srctree)/tools/testi 1238 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 1369 1239 1370 kselftest-%: headers FORCE !! 1240 PHONY += kselftest-clean 1371 $(Q)$(MAKE) -C $(srctree)/tools/testi !! 1241 kselftest-clean: >> 1242 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests clean 1372 1243 1373 PHONY += kselftest-merge 1244 PHONY += kselftest-merge 1374 kselftest-merge: 1245 kselftest-merge: 1375 $(if $(wildcard $(objtree)/.config),, 1246 $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1376 $(Q)find $(srctree)/tools/testing/sel !! 1247 $(Q)find $(srctree)/tools/testing/selftests -name config | \ 1377 xargs $(srctree)/scripts/kcon !! 1248 xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config 1378 $(Q)$(MAKE) -f $(srctree)/Makefile ol !! 1249 +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1379 1250 1380 # ------------------------------------------- 1251 # --------------------------------------------------------------------------- 1381 # Devicetree files 1252 # Devicetree files 1382 1253 1383 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ 1254 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 1384 dtstree := arch/$(SRCARCH)/boot/dts 1255 dtstree := arch/$(SRCARCH)/boot/dts 1385 endif 1256 endif 1386 1257 1387 ifneq ($(dtstree),) 1258 ifneq ($(dtstree),) 1388 1259 1389 %.dtb: dtbs_prepare !! 1260 %.dtb: prepare3 scripts_dtc 1390 $(Q)$(MAKE) $(build)=$(dtstree) $(dts 1261 $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1391 1262 1392 %.dtbo: dtbs_prepare !! 1263 PHONY += dtbs dtbs_install dt_binding_check 1393 $(Q)$(MAKE) $(build)=$(dtstree) $(dts !! 1264 dtbs dtbs_check: prepare3 scripts_dtc 1394 !! 1265 $(Q)$(MAKE) $(build)=$(dtstree) 1395 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ << 1396 dtbs: dtbs_prepare << 1397 $(Q)$(MAKE) $(build)=$(dtstree) need- << 1398 << 1399 # include/config/kernel.release is actually n << 1400 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) << 1401 # dtbs_install depend on it as dtbs_install m << 1402 dtbs_prepare: include/config/kernel.release s << 1403 << 1404 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), << 1405 export CHECK_DTBS=y << 1406 endif << 1407 << 1408 ifneq ($(CHECK_DTBS),) << 1409 dtbs_prepare: dt_binding_schemas << 1410 endif << 1411 1266 1412 dtbs_check: dtbs !! 1267 dtbs_check: export CHECK_DTBS=1 >> 1268 dtbs_check: dt_binding_check 1413 1269 1414 dtbs_install: 1270 dtbs_install: 1415 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1271 $(Q)$(MAKE) $(dtbinst)=$(dtstree) 1416 1272 1417 ifdef CONFIG_OF_EARLY_FLATTREE 1273 ifdef CONFIG_OF_EARLY_FLATTREE 1418 all: dtbs 1274 all: dtbs 1419 endif 1275 endif 1420 1276 1421 endif 1277 endif 1422 1278 1423 PHONY += scripts_dtc 1279 PHONY += scripts_dtc 1424 scripts_dtc: scripts_basic 1280 scripts_dtc: scripts_basic 1425 $(Q)$(MAKE) $(build)=scripts/dtc 1281 $(Q)$(MAKE) $(build)=scripts/dtc 1426 1282 1427 ifneq ($(filter dt_binding_check, $(MAKECMDGO !! 1283 dt_binding_check: scripts_dtc 1428 export CHECK_DTBS=y << 1429 endif << 1430 << 1431 PHONY += dt_binding_check dt_binding_schemas << 1432 dt_binding_check: dt_binding_schemas scripts_ << 1433 $(Q)$(MAKE) $(build)=Documentation/de << 1434 << 1435 dt_binding_schemas: << 1436 $(Q)$(MAKE) $(build)=Documentation/de 1284 $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings 1437 1285 1438 PHONY += dt_compatible_check << 1439 dt_compatible_check: dt_binding_schemas << 1440 $(Q)$(MAKE) $(build)=Documentation/de << 1441 << 1442 # ------------------------------------------- 1286 # --------------------------------------------------------------------------- 1443 # Modules 1287 # Modules 1444 1288 1445 ifdef CONFIG_MODULES 1289 ifdef CONFIG_MODULES 1446 1290 1447 # By default, build modules as well 1291 # By default, build modules as well 1448 1292 1449 all: modules 1293 all: modules 1450 1294 1451 # When we're building modules with modversion << 1452 # the built-in objects during the descend as << 1453 # make sure the checksums are up to date befo << 1454 ifdef CONFIG_MODVERSIONS << 1455 KBUILD_BUILTIN := 1 << 1456 endif << 1457 << 1458 # Build modules 1295 # Build modules 1459 # 1296 # >> 1297 # A module can be listed more than once in obj-m resulting in >> 1298 # duplicate lines in modules.order files. Those are removed >> 1299 # using awk while concatenating to the final file. >> 1300 >> 1301 PHONY += modules >> 1302 modules: $(if $(KBUILD_BUILTIN),vmlinux) modules.order modules.builtin >> 1303 @$(kecho) ' Building modules, stage 2.'; >> 1304 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1305 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh 1460 1306 1461 # *.ko are usually independent of vmlinux, bu !! 1307 modules.order: $(vmlinux-dirs) 1462 # is an exception. !! 1308 $(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(vmlinux-dirs)) > $@ 1463 ifdef CONFIG_DEBUG_INFO_BTF_MODULES !! 1309 1464 KBUILD_BUILTIN := 1 !! 1310 modbuiltin-dirs := $(addprefix _modbuiltin_, $(vmlinux-dirs)) 1465 modules: vmlinux << 1466 endif << 1467 1311 1468 modules: modules_prepare !! 1312 modules.builtin: $(modbuiltin-dirs) >> 1313 $(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(vmlinux-dirs)) > $@ >> 1314 >> 1315 PHONY += $(modbuiltin-dirs) >> 1316 # tristate.conf is not included from this Makefile. Add it as a prerequisite >> 1317 # here to make it self-healing in case somebody accidentally removes it. >> 1318 $(modbuiltin-dirs): include/config/tristate.conf >> 1319 $(Q)$(MAKE) $(modbuiltin)=$(patsubst _modbuiltin_%,%,$@) 1469 1320 1470 # Target to prepare building external modules 1321 # Target to prepare building external modules >> 1322 PHONY += modules_prepare 1471 modules_prepare: prepare 1323 modules_prepare: prepare 1472 $(Q)$(MAKE) $(build)=scripts scripts/ !! 1324 >> 1325 # Target to install modules >> 1326 PHONY += modules_install >> 1327 modules_install: _modinst_ _modinst_post >> 1328 >> 1329 PHONY += _modinst_ >> 1330 _modinst_: >> 1331 @rm -rf $(MODLIB)/kernel >> 1332 @rm -f $(MODLIB)/source >> 1333 @mkdir -p $(MODLIB)/kernel >> 1334 @ln -s $(abspath $(srctree)) $(MODLIB)/source >> 1335 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ >> 1336 rm -f $(MODLIB)/build ; \ >> 1337 ln -s $(CURDIR) $(MODLIB)/build ; \ >> 1338 fi >> 1339 @sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order >> 1340 @sed 's:^:kernel/:' modules.builtin > $(MODLIB)/modules.builtin >> 1341 @cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/ >> 1342 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1343 >> 1344 # This depmod is only for convenience to give the initial >> 1345 # boot a modules.dep even before / is mounted read-write. However the >> 1346 # boot script depmod is the master version. >> 1347 PHONY += _modinst_post >> 1348 _modinst_post: _modinst_ >> 1349 $(call cmd,depmod) >> 1350 >> 1351 ifeq ($(CONFIG_MODULE_SIG), y) >> 1352 PHONY += modules_sign >> 1353 modules_sign: >> 1354 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign >> 1355 endif >> 1356 >> 1357 else # CONFIG_MODULES >> 1358 >> 1359 # Modules not configured >> 1360 # --------------------------------------------------------------------------- >> 1361 >> 1362 PHONY += modules modules_install >> 1363 modules modules_install: >> 1364 @echo >&2 >> 1365 @echo >&2 "The present kernel configuration has modules disabled." >> 1366 @echo >&2 "Type 'make config' and enable loadable module support." >> 1367 @echo >&2 "Then build a kernel with module support enabled." >> 1368 @echo >&2 >> 1369 @exit 1 1473 1370 1474 endif # CONFIG_MODULES 1371 endif # CONFIG_MODULES 1475 1372 1476 ### 1373 ### 1477 # Cleaning is done on three levels. 1374 # Cleaning is done on three levels. 1478 # make clean Delete most generated files 1375 # make clean Delete most generated files 1479 # Leave enough to build extern 1376 # Leave enough to build external modules 1480 # make mrproper Delete the current configura 1377 # make mrproper Delete the current configuration, and all generated files 1481 # make distclean Remove editor backup files, 1378 # make distclean Remove editor backup files, patch leftover files and the like 1482 1379 1483 # Directories & files removed with 'make clea 1380 # Directories & files removed with 'make clean' 1484 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1381 CLEAN_DIRS += include/ksym 1485 modules.builtin modules.builti !! 1382 CLEAN_FILES += modules.builtin.modinfo 1486 compile_commands.json rust/tes << 1487 rust-project.json .vmlinux.obj << 1488 1383 1489 # Directories & files removed with 'make mrpr 1384 # Directories & files removed with 'make mrproper' 1490 MRPROPER_FILES += include/config include/gene !! 1385 MRPROPER_DIRS += include/config include/generated \ 1491 arch/$(SRCARCH)/include/gen !! 1386 arch/$(SRCARCH)/include/generated .tmp_objdiff 1492 debian snap tar-install PKG !! 1387 MRPROPER_FILES += .config .config.old .version \ 1493 .config .config.old .versio << 1494 Module.symvers \ 1388 Module.symvers \ 1495 certs/signing_key.pem \ !! 1389 signing_key.pem signing_key.priv signing_key.x509 \ 1496 certs/x509.genkey \ !! 1390 x509.genkey extra_certificates signing_key.x509.keyid \ 1497 vmlinux-gdb.py \ !! 1391 signing_key.x509.signer vmlinux-gdb.py 1498 rpmbuild \ !! 1392 1499 rust/libmacros.so !! 1393 # Directories & files removed with 'make distclean' >> 1394 DISTCLEAN_DIRS += >> 1395 DISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS 1500 1396 1501 # clean - Delete most, but leave enough to bu 1397 # clean - Delete most, but leave enough to build external modules 1502 # 1398 # 1503 clean: private rm-files := $(CLEAN_FILES) !! 1399 clean: rm-dirs := $(CLEAN_DIRS) >> 1400 clean: rm-files := $(CLEAN_FILES) >> 1401 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs)) 1504 1402 1505 PHONY += archclean vmlinuxclean !! 1403 PHONY += $(clean-dirs) clean archclean vmlinuxclean >> 1404 $(clean-dirs): >> 1405 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1506 1406 1507 vmlinuxclean: 1407 vmlinuxclean: 1508 $(Q)$(CONFIG_SHELL) $(srctree)/script 1408 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1509 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f 1409 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1510 1410 1511 clean: archclean vmlinuxclean resolve_btfids_ !! 1411 clean: archclean vmlinuxclean 1512 1412 1513 # mrproper - Delete all generated files, incl 1413 # mrproper - Delete all generated files, including .config 1514 # 1414 # 1515 mrproper: private rm-files := $(MRPROPER_FILE !! 1415 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) >> 1416 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1516 mrproper-dirs := $(addprefix _mrproper_, 1417 mrproper-dirs := $(addprefix _mrproper_,scripts) 1517 1418 1518 PHONY += $(mrproper-dirs) mrproper 1419 PHONY += $(mrproper-dirs) mrproper 1519 $(mrproper-dirs): 1420 $(mrproper-dirs): 1520 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1421 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1521 1422 1522 mrproper: clean $(mrproper-dirs) 1423 mrproper: clean $(mrproper-dirs) >> 1424 $(call cmd,rmdirs) 1523 $(call cmd,rmfiles) 1425 $(call cmd,rmfiles) 1524 @find . $(RCS_FIND_IGNORE) \ << 1525 \( -name '*.rmeta' \) \ << 1526 -type f -print | xargs rm -f << 1527 1426 1528 # distclean 1427 # distclean 1529 # 1428 # >> 1429 distclean: rm-dirs := $(wildcard $(DISTCLEAN_DIRS)) >> 1430 distclean: rm-files := $(wildcard $(DISTCLEAN_FILES)) >> 1431 1530 PHONY += distclean 1432 PHONY += distclean 1531 1433 1532 distclean: mrproper 1434 distclean: mrproper 1533 @find . $(RCS_FIND_IGNORE) \ !! 1435 $(call cmd,rmdirs) >> 1436 $(call cmd,rmfiles) >> 1437 @find $(srctree) $(RCS_FIND_IGNORE) \ 1534 \( -name '*.orig' -o -name '* 1438 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1535 -o -name '*.bak' -o -name '#* 1439 -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1536 -o -name 'core' -o -name tags !! 1440 -o -name 'core' \) \ 1537 -o -name GPATH -o -name GRTAG << 1538 -type f -print | xargs rm -f 1441 -type f -print | xargs rm -f 1539 1442 1540 1443 1541 # Packaging of the kernel to various formats 1444 # Packaging of the kernel to various formats 1542 # ------------------------------------------- 1445 # --------------------------------------------------------------------------- >> 1446 package-dir := scripts/package 1543 1447 1544 %src-pkg: FORCE 1448 %src-pkg: FORCE 1545 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1449 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1546 %pkg: include/config/kernel.release FORCE 1450 %pkg: include/config/kernel.release FORCE 1547 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1451 $(Q)$(MAKE) $(build)=$(package-dir) $@ >> 1452 1548 1453 1549 # Brief documentation of the typical targets 1454 # Brief documentation of the typical targets used 1550 # ------------------------------------------- 1455 # --------------------------------------------------------------------------- 1551 1456 1552 boards := $(wildcard $(srctree)/arch/$(SRCARC 1457 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1553 boards := $(sort $(notdir $(boards))) 1458 boards := $(sort $(notdir $(boards))) 1554 board-dirs := $(dir $(wildcard $(srctree)/arc 1459 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1555 board-dirs := $(sort $(notdir $(board-dirs:/= 1460 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1556 1461 1557 PHONY += help 1462 PHONY += help 1558 help: 1463 help: 1559 @echo 'Cleaning targets:' 1464 @echo 'Cleaning targets:' 1560 @echo ' clean - Remove mo 1465 @echo ' clean - Remove most generated files but keep the config and' 1561 @echo ' enough bu 1466 @echo ' enough build support to build external modules' 1562 @echo ' mrproper - Remove al 1467 @echo ' mrproper - Remove all generated files + config + various backup files' 1563 @echo ' distclean - mrproper 1468 @echo ' distclean - mrproper + remove editor backup and patch files' 1564 @echo '' 1469 @echo '' >> 1470 @echo 'Configuration targets:' 1565 @$(MAKE) -f $(srctree)/scripts/kconfi 1471 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1566 @echo '' 1472 @echo '' 1567 @echo 'Other generic targets:' 1473 @echo 'Other generic targets:' 1568 @echo ' all - Build all 1474 @echo ' all - Build all targets marked with [*]' 1569 @echo '* vmlinux - Build the 1475 @echo '* vmlinux - Build the bare kernel' 1570 @echo '* modules - Build all 1476 @echo '* modules - Build all modules' 1571 @echo ' modules_install - Install a 1477 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1572 @echo ' vdso_install - Install u << 1573 @echo ' dir/ - Build all 1478 @echo ' dir/ - Build all files in dir and below' 1574 @echo ' dir/file.[ois] - Build spe 1479 @echo ' dir/file.[ois] - Build specified target only' 1575 @echo ' dir/file.ll - Build the 1480 @echo ' dir/file.ll - Build the LLVM assembly file' 1576 @echo ' (requires 1481 @echo ' (requires compiler support for LLVM assembly generation)' 1577 @echo ' dir/file.lst - Build spe 1482 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1578 @echo ' (requires 1483 @echo ' (requires a recent binutils and recent build (System.map))' 1579 @echo ' dir/file.ko - Build mod 1484 @echo ' dir/file.ko - Build module including final link' 1580 @echo ' modules_prepare - Set up fo 1485 @echo ' modules_prepare - Set up for building external modules' 1581 @echo ' tags/TAGS - Generate 1486 @echo ' tags/TAGS - Generate tags file for editors' 1582 @echo ' cscope - Generate 1487 @echo ' cscope - Generate cscope index' 1583 @echo ' gtags - Generate 1488 @echo ' gtags - Generate GNU GLOBAL index' 1584 @echo ' kernelrelease - Output th 1489 @echo ' kernelrelease - Output the release version string (use with make -s)' 1585 @echo ' kernelversion - Output th 1490 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1586 @echo ' image_name - Output th 1491 @echo ' image_name - Output the image name (use with make -s)' 1587 @echo ' headers_install - Install s 1492 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1588 echo ' (default: 1493 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1589 echo '' 1494 echo '' 1590 @echo 'Static analysers:' 1495 @echo 'Static analysers:' 1591 @echo ' checkstack - Generate !! 1496 @echo ' checkstack - Generate a list of stack hogs' 1592 @echo ' with a st !! 1497 @echo ' namespacecheck - Name space analysis on compiled kernel' 1593 @echo ' versioncheck - Sanity ch 1498 @echo ' versioncheck - Sanity check on version.h usage' 1594 @echo ' includecheck - Check for 1499 @echo ' includecheck - Check for duplicate included header files' 1595 @echo ' export_report - List the 1500 @echo ' export_report - List the usages of all exported symbols' >> 1501 @echo ' headers_check - Sanity check on exported headers' 1596 @echo ' headerdep - Detect in 1502 @echo ' headerdep - Detect inclusion cycles in headers' 1597 @echo ' coccicheck - Check wit 1503 @echo ' coccicheck - Check with Coccinelle' 1598 @echo ' clang-analyzer - Check wit << 1599 @echo ' clang-tidy - Check wit << 1600 @echo '' << 1601 @echo 'Tools:' << 1602 @echo ' nsdeps - Generate << 1603 @echo '' 1504 @echo '' 1604 @echo 'Kernel selftest:' 1505 @echo 'Kernel selftest:' 1605 @echo ' kselftest - Build a !! 1506 @echo ' kselftest - Build and run kernel selftest (run as root)' 1606 @echo ' Build, !! 1507 @echo ' Build, install, and boot kernel before' 1607 @echo ' running !! 1508 @echo ' running kselftest on it' 1608 @echo ' Run as !! 1509 @echo ' kselftest-clean - Remove all generated kselftest files' 1609 @echo ' kselftest-all - Build k !! 1510 @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existing' 1610 @echo ' kselftest-install - Build a !! 1511 @echo ' .config.' 1611 @echo ' kselftest-clean - Remove << 1612 @echo ' kselftest-merge - Merge a << 1613 @echo ' kselfte << 1614 @echo '' << 1615 @echo 'Rust targets:' << 1616 @echo ' rustavailable - Checks wh << 1617 @echo ' available << 1618 @echo ' rustfmt - Reformat << 1619 @echo ' rustfmtcheck - Checks if << 1620 @echo ' is format << 1621 @echo ' rustdoc - Generate << 1622 @echo ' (requires << 1623 @echo ' rusttest - Runs the << 1624 @echo ' (requires << 1625 @echo ' rust-analyzer - Generate << 1626 @echo ' (requires << 1627 @echo ' dir/file.[os] - Build spe << 1628 @echo ' dir/file.rsi - Build mac << 1629 @echo ' Run with << 1630 @echo ' The outpu << 1631 @echo ' dir/file.ll - Build the << 1632 @echo '' 1512 @echo '' 1633 @$(if $(dtstree), \ 1513 @$(if $(dtstree), \ 1634 echo 'Devicetree:'; \ 1514 echo 'Devicetree:'; \ 1635 echo '* dtbs - !! 1515 echo '* dtbs - Build device tree blobs for enabled boards'; \ 1636 echo ' dtbs_install - !! 1516 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ 1637 echo ' dt_binding_check - << 1638 echo ' dt_binding_schema - << 1639 echo ' dtbs_check - << 1640 echo '') 1517 echo '') 1641 1518 1642 @echo 'Userspace tools targets:' 1519 @echo 'Userspace tools targets:' 1643 @echo ' use "make tools/help"' 1520 @echo ' use "make tools/help"' 1644 @echo ' or "cd tools; make help"' 1521 @echo ' or "cd tools; make help"' 1645 @echo '' 1522 @echo '' 1646 @echo 'Kernel packaging:' 1523 @echo 'Kernel packaging:' 1647 @$(MAKE) -f $(srctree)/scripts/Makefi !! 1524 @$(MAKE) $(build)=$(package-dir) help 1648 @echo '' 1525 @echo '' 1649 @echo 'Documentation targets:' 1526 @echo 'Documentation targets:' 1650 @$(MAKE) -f $(srctree)/Documentation/ 1527 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1651 @echo '' 1528 @echo '' 1652 @echo 'Architecture-specific targets !! 1529 @echo 'Architecture specific targets ($(SRCARCH)):' 1653 @$(or $(archhelp),\ !! 1530 @$(if $(archhelp),$(archhelp),\ 1654 echo ' No architecture-speci !! 1531 echo ' No architecture specific help defined for $(SRCARCH)') 1655 @echo '' 1532 @echo '' 1656 @$(if $(boards), \ 1533 @$(if $(boards), \ 1657 $(foreach b, $(boards), \ 1534 $(foreach b, $(boards), \ 1658 printf " %-27s - Build for % !! 1535 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1659 echo '') 1536 echo '') 1660 @$(if $(board-dirs), \ 1537 @$(if $(board-dirs), \ 1661 $(foreach b, $(board-dirs), \ 1538 $(foreach b, $(board-dirs), \ 1662 printf " %-16s - Show %s-spe 1539 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1663 printf " %-16s - Show all of 1540 printf " %-16s - Show all of the above\\n" help-boards; \ 1664 echo '') 1541 echo '') 1665 1542 1666 @echo ' make V=n [targets] 1: ver !! 1543 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1667 @echo ' 2: giv !! 1544 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1668 @echo ' V=1 an << 1669 @echo ' make O=dir [targets] Locate 1545 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1670 @echo ' make C=1 [targets] Check !! 1546 @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)' 1671 @echo ' (spars << 1672 @echo ' make C=2 [targets] Force 1547 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1673 @echo ' make RECORDMCOUNT_WARN=1 [t 1548 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1674 @echo ' make W=n [targets] Enable !! 1549 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1675 @echo ' 1: warnings w 1550 @echo ' 1: warnings which may be relevant and do not occur too often' 1676 @echo ' 2: warnings w 1551 @echo ' 2: warnings which occur quite often but may still be relevant' 1677 @echo ' 3: more obscu 1552 @echo ' 3: more obscure warnings, can most likely be ignored' 1678 @echo ' c: extra chec << 1679 @echo ' e: warnings a << 1680 @echo ' Multiple leve 1553 @echo ' Multiple levels can be combined with W=12 or W=123' 1681 @$(if $(dtstree), \ << 1682 echo ' make CHECK_DTBS=1 [ta << 1683 echo ' This can be ap << 1684 ) << 1685 @echo '' 1554 @echo '' 1686 @echo 'Execute "make" or "make all" 1555 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1687 @echo 'For further info see the ./RE 1556 @echo 'For further info see the ./README file' 1688 1557 1689 1558 1690 help-board-dirs := $(addprefix help-,$(board- 1559 help-board-dirs := $(addprefix help-,$(board-dirs)) 1691 1560 1692 help-boards: $(help-board-dirs) 1561 help-boards: $(help-board-dirs) 1693 1562 1694 boards-per-dir = $(sort $(notdir $(wildcard $ 1563 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1695 1564 1696 $(help-board-dirs): help-%: 1565 $(help-board-dirs): help-%: 1697 @echo 'Architecture-specific targets !! 1566 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1698 @$(if $(boards-per-dir), \ 1567 @$(if $(boards-per-dir), \ 1699 $(foreach b, $(boards-per-dir 1568 $(foreach b, $(boards-per-dir), \ 1700 printf " %-24s - Build for % 1569 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1701 echo '') 1570 echo '') 1702 1571 1703 1572 1704 # Documentation targets 1573 # Documentation targets 1705 # ------------------------------------------- 1574 # --------------------------------------------------------------------------- 1706 DOC_TARGETS := xmldocs latexdocs pdfdocs html 1575 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1707 linkcheckdocs dochelp refcheck !! 1576 linkcheckdocs dochelp refcheckdocs 1708 PHONY += $(DOC_TARGETS) 1577 PHONY += $(DOC_TARGETS) 1709 $(DOC_TARGETS): !! 1578 $(DOC_TARGETS): scripts_basic FORCE 1710 $(Q)$(MAKE) $(build)=Documentation $@ 1579 $(Q)$(MAKE) $(build)=Documentation $@ 1711 1580 1712 << 1713 # Rust targets << 1714 # ------------------------------------------- << 1715 << 1716 # "Is Rust available?" target << 1717 PHONY += rustavailable << 1718 rustavailable: << 1719 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1720 << 1721 # Documentation target << 1722 # << 1723 # Using the singular to avoid running afoul o << 1724 PHONY += rustdoc << 1725 rustdoc: prepare << 1726 $(Q)$(MAKE) $(build)=rust $@ << 1727 << 1728 # Testing target << 1729 PHONY += rusttest << 1730 rusttest: prepare << 1731 $(Q)$(MAKE) $(build)=rust $@ << 1732 << 1733 # Formatting targets << 1734 PHONY += rustfmt rustfmtcheck << 1735 << 1736 # We skip `rust/alloc` since we want to minim << 1737 # << 1738 # We match using absolute paths since `find` << 1739 # when matching, which is a problem when e.g. << 1740 # We `grep` afterwards in order to remove the << 1741 rustfmt: << 1742 $(Q)find $(abs_srctree) -type f -name << 1743 -o -path $(abs_srctree)/rust/ << 1744 -o -path $(abs_objtree)/rust/ << 1745 | grep -Fv $(abs_srctree)/rus << 1746 | grep -Fv $(abs_objtree)/rus << 1747 | grep -Fv generated \ << 1748 | xargs $(RUSTFMT) $(rustfmt_ << 1749 << 1750 rustfmtcheck: rustfmt_flags = --check << 1751 rustfmtcheck: rustfmt << 1752 << 1753 # Misc 1581 # Misc 1754 # ------------------------------------------- 1582 # --------------------------------------------------------------------------- 1755 1583 1756 PHONY += misc-check << 1757 misc-check: << 1758 $(Q)$(srctree)/scripts/misc-check << 1759 << 1760 all: misc-check << 1761 << 1762 PHONY += scripts_gdb 1584 PHONY += scripts_gdb 1763 scripts_gdb: prepare0 1585 scripts_gdb: prepare0 1764 $(Q)$(MAKE) $(build)=scripts/gdb 1586 $(Q)$(MAKE) $(build)=scripts/gdb 1765 $(Q)ln -fsn $(abspath $(srctree)/scri 1587 $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) 1766 1588 1767 ifdef CONFIG_GDB_SCRIPTS 1589 ifdef CONFIG_GDB_SCRIPTS 1768 all: scripts_gdb 1590 all: scripts_gdb 1769 endif 1591 endif 1770 1592 1771 else # KBUILD_EXTMOD 1593 else # KBUILD_EXTMOD 1772 1594 1773 filechk_kernel.release = echo $(KERNELRELEASE << 1774 << 1775 ### 1595 ### 1776 # External module support. 1596 # External module support. 1777 # When building external modules the kernel u 1597 # When building external modules the kernel used as basis is considered 1778 # read-only, and no consistency checks are ma 1598 # read-only, and no consistency checks are made and the make 1779 # system is not used on the basis kernel. If 1599 # system is not used on the basis kernel. If updates are required 1780 # in the basis kernel ordinary make commands !! 1600 # in the basis kernel ordinary make commands (without M=...) must >> 1601 # be used. >> 1602 # >> 1603 # The following are the only valid targets when building external >> 1604 # modules. >> 1605 # make M=dir clean Delete all automatically generated files >> 1606 # make M=dir modules Make all modules in specified dir >> 1607 # make M=dir Same as 'make M=dir modules' >> 1608 # make M=dir modules_install >> 1609 # Install the modules built in the module directory >> 1610 # Assumes install directory is already created 1781 1611 1782 # We are always building only modules. !! 1612 # We are always building modules 1783 KBUILD_BUILTIN := << 1784 KBUILD_MODULES := 1 1613 KBUILD_MODULES := 1 1785 1614 1786 build-dir := $(KBUILD_EXTMOD) !! 1615 PHONY += $(objtree)/Module.symvers >> 1616 $(objtree)/Module.symvers: >> 1617 @test -e $(objtree)/Module.symvers || ( \ >> 1618 echo; \ >> 1619 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ >> 1620 echo " is missing; modules will have no dependencies and modversions."; \ >> 1621 echo ) >> 1622 >> 1623 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) >> 1624 PHONY += $(module-dirs) modules >> 1625 $(module-dirs): prepare $(objtree)/Module.symvers >> 1626 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) need-modorder=1 1787 1627 1788 compile_commands.json: $(extmod_prefix)compil !! 1628 modules: $(module-dirs) 1789 PHONY += compile_commands.json !! 1629 @$(kecho) ' Building modules, stage 2.'; >> 1630 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1790 1631 1791 clean-dirs := $(KBUILD_EXTMOD) !! 1632 PHONY += modules_install 1792 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1633 modules_install: _emodinst_ _emodinst_post 1793 $(KBUILD_EXTMOD)/compile_commands.jso << 1794 1634 1795 PHONY += prepare !! 1635 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1796 # now expand this into a simple variable to r !! 1636 PHONY += _emodinst_ 1797 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT !! 1637 _emodinst_: 1798 prepare: !! 1638 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1799 @if [ "$(CC_VERSION_TEXT)" != "$(CONF !! 1639 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1800 echo >&2 "warning: the compil !! 1640 1801 echo >&2 " The kernel was bu !! 1641 PHONY += _emodinst_post 1802 echo >&2 " You are using: !! 1642 _emodinst_post: _emodinst_ 1803 fi !! 1643 $(call cmd,depmod) >> 1644 >> 1645 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) >> 1646 >> 1647 PHONY += $(clean-dirs) clean >> 1648 $(clean-dirs): >> 1649 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) >> 1650 >> 1651 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1804 1652 1805 PHONY += help 1653 PHONY += help 1806 help: 1654 help: 1807 @echo ' Building external modules.' 1655 @echo ' Building external modules.' 1808 @echo ' Syntax: make -C path/to/ker 1656 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1809 @echo '' 1657 @echo '' 1810 @echo ' modules - default t 1658 @echo ' modules - default target, build the module(s)' 1811 @echo ' modules_install - install t 1659 @echo ' modules_install - install the module' 1812 @echo ' clean - remove ge 1660 @echo ' clean - remove generated files in module directory only' 1813 @echo ' rust-analyzer - generate << 1814 @echo '' 1661 @echo '' 1815 1662 1816 ifndef CONFIG_MODULES !! 1663 PHONY += prepare 1817 modules modules_install: __external_modules_e << 1818 __external_modules_error: << 1819 @echo >&2 '***' << 1820 @echo >&2 '*** The present kernel dis << 1821 @echo >&2 '*** You cannot build or in << 1822 @echo >&2 '***' << 1823 @false << 1824 endif << 1825 << 1826 endif # KBUILD_EXTMOD 1664 endif # KBUILD_EXTMOD 1827 1665 1828 # ------------------------------------------- << 1829 # Modules << 1830 << 1831 PHONY += modules modules_install modules_sign << 1832 << 1833 modules_install: << 1834 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1835 sign-only=$(if $(filter modules_insta << 1836 << 1837 ifeq ($(CONFIG_MODULE_SIG),y) << 1838 # modules_sign is a subset of modules_install << 1839 # 'make modules_install modules_sign' is equi << 1840 modules_sign: modules_install << 1841 @: << 1842 else << 1843 modules_sign: << 1844 @echo >&2 '***' << 1845 @echo >&2 '*** CONFIG_MODULE_SIG is d << 1846 @echo >&2 '***' << 1847 @false << 1848 endif << 1849 << 1850 ifdef CONFIG_MODULES << 1851 << 1852 $(MODORDER): $(build-dir) << 1853 @: << 1854 << 1855 # KBUILD_MODPOST_NOFINAL can be set to skip t << 1856 # This is solely useful to speed up test comp << 1857 modules: modpost << 1858 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1859 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1860 endif << 1861 << 1862 PHONY += modules_check << 1863 modules_check: $(MODORDER) << 1864 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1865 << 1866 else # CONFIG_MODULES << 1867 << 1868 modules: << 1869 @: << 1870 << 1871 KBUILD_MODULES := << 1872 << 1873 endif # CONFIG_MODULES << 1874 << 1875 PHONY += modpost << 1876 modpost: $(if $(single-build),, $(if $(KBUILD << 1877 $(if $(KBUILD_MODULES), modules_chec << 1878 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1879 << 1880 # Single targets << 1881 # ------------------------------------------- << 1882 # To build individual files in subdirectories << 1883 # << 1884 # make foo/bar/baz.s << 1885 # << 1886 # The supported suffixes for single-target ar << 1887 # << 1888 # To build only under specific subdirectories << 1889 # << 1890 # make foo/bar/baz/ << 1891 << 1892 ifdef single-build << 1893 << 1894 # .ko is special because modpost is needed << 1895 single-ko := $(sort $(filter %.ko, $(MAKECMDG << 1896 single-no-ko := $(filter-out $(single-ko), $( << 1897 $(foreach x, o mod, $(patsubs << 1898 << 1899 $(single-ko): single_modules << 1900 @: << 1901 $(single-no-ko): $(build-dir) << 1902 @: << 1903 << 1904 # Remove MODORDER when done because it is not << 1905 PHONY += single_modules << 1906 single_modules: $(single-no-ko) modules_prepa << 1907 $(Q){ $(foreach m, $(single-ko), echo << 1908 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1909 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1910 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1911 endif << 1912 $(Q)rm -f $(MODORDER) << 1913 << 1914 single-goals := $(addprefix $(build-dir)/, $( << 1915 << 1916 KBUILD_MODULES := 1 << 1917 << 1918 endif << 1919 << 1920 # Preset locale variables to speed up the bui << 1921 # tweaks to this spot to avoid wrong language << 1922 # make menuconfig etc. << 1923 # Error messages still appears in the origina << 1924 PHONY += $(build-dir) << 1925 $(build-dir): prepare << 1926 $(Q)$(MAKE) $(build)=$@ need-builtin= << 1927 << 1928 clean-dirs := $(addprefix _clean_, $(clean-di << 1929 PHONY += $(clean-dirs) clean << 1930 $(clean-dirs): << 1931 $(Q)$(MAKE) $(clean)=$(patsubst _clea << 1932 << 1933 clean: $(clean-dirs) 1666 clean: $(clean-dirs) >> 1667 $(call cmd,rmdirs) 1934 $(call cmd,rmfiles) 1668 $(call cmd,rmfiles) 1935 @find $(or $(KBUILD_EXTMOD), .) $(RCS !! 1669 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1936 \( -name '*.[aios]' -o -name !! 1670 \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ 1937 -o -name '*.ko.*' \ 1671 -o -name '*.ko.*' \ 1938 -o -name '*.dtb' -o -name '*. !! 1672 -o -name '*.dtb' -o -name '*.dtb.S' -o -name '*.dt.yaml' \ 1939 -o -name '*.dtb.S' -o -name ' << 1940 -o -name '*.dt.yaml' -o -name << 1941 -o -name '*.dwo' -o -name '*. 1673 -o -name '*.dwo' -o -name '*.lst' \ 1942 -o -name '*.su' -o -name '*.m 1674 -o -name '*.su' -o -name '*.mod' \ 1943 -o -name '.*.d' -o -name '.*. 1675 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1944 -o -name '*.lex.c' -o -name ' 1676 -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 1945 -o -name '*.asn1.[ch]' \ 1677 -o -name '*.asn1.[ch]' \ 1946 -o -name '*.symtypes' -o -nam 1678 -o -name '*.symtypes' -o -name 'modules.order' \ >> 1679 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1947 -o -name '*.c.[012]*.*' \ 1680 -o -name '*.c.[012]*.*' \ 1948 -o -name '*.ll' \ 1681 -o -name '*.ll' \ 1949 -o -name '*.gcno' \ !! 1682 -o -name '*.gcno' \) -type f -print | xargs rm -f 1950 -o -name '*.*.symversions' \) << 1951 -o -name '.tmp_*' -print \ << 1952 | xargs rm -rf << 1953 1683 1954 # Generate tags for editors 1684 # Generate tags for editors 1955 # ------------------------------------------- 1685 # --------------------------------------------------------------------------- 1956 quiet_cmd_tags = GEN $@ 1686 quiet_cmd_tags = GEN $@ 1957 cmd_tags = $(BASH) $(srctree)/scripts/t !! 1687 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1958 1688 1959 tags TAGS cscope gtags: FORCE 1689 tags TAGS cscope gtags: FORCE 1960 $(call cmd,tags) 1690 $(call cmd,tags) 1961 1691 1962 # Generate rust-project.json (a file that des << 1963 # Rust projects) for rust-analyzer (an implem << 1964 # Protocol). << 1965 PHONY += rust-analyzer << 1966 rust-analyzer: << 1967 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1968 $(Q)$(MAKE) $(build)=rust $@ << 1969 << 1970 # Script to generate missing namespace depend << 1971 # ------------------------------------------- << 1972 << 1973 PHONY += nsdeps << 1974 nsdeps: export KBUILD_NSDEPS=1 << 1975 nsdeps: modules << 1976 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1977 << 1978 # Clang Tooling << 1979 # ------------------------------------------- << 1980 << 1981 quiet_cmd_gen_compile_commands = GEN $@ << 1982 cmd_gen_compile_commands = $(PYTHON3) $ << 1983 << 1984 $(extmod_prefix)compile_commands.json: $(srct << 1985 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K << 1986 $(if $(CONFIG_MODULES), $(MODORDER)) << 1987 $(call if_changed,gen_compile_command << 1988 << 1989 targets += $(extmod_prefix)compile_commands.j << 1990 << 1991 PHONY += clang-tidy clang-analyzer << 1992 << 1993 ifdef CONFIG_CC_IS_CLANG << 1994 quiet_cmd_clang_tools = CHECK $< << 1995 cmd_clang_tools = $(PYTHON3) $(srctree) << 1996 << 1997 clang-tidy clang-analyzer: $(extmod_prefix)co << 1998 $(call cmd,clang_tools) << 1999 else << 2000 clang-tidy clang-analyzer: << 2001 @echo "$@ requires CC=clang" >&2 << 2002 @false << 2003 endif << 2004 << 2005 # Scripts to check various things for consist 1692 # Scripts to check various things for consistency 2006 # ------------------------------------------- 1693 # --------------------------------------------------------------------------- 2007 1694 2008 PHONY += includecheck versioncheck coccicheck !! 1695 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 2009 1696 2010 includecheck: 1697 includecheck: 2011 find $(srctree)/* $(RCS_FIND_IGNORE) 1698 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2012 -name '*.[hcS]' -type f -prin 1699 -name '*.[hcS]' -type f -print | sort \ 2013 | xargs $(PERL) -w $(srctree) 1700 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 2014 1701 2015 versioncheck: 1702 versioncheck: 2016 find $(srctree)/* $(RCS_FIND_IGNORE) 1703 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2017 -name '*.[hcS]' -type f -prin 1704 -name '*.[hcS]' -type f -print | sort \ 2018 | xargs $(PERL) -w $(srctree) 1705 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 2019 1706 2020 coccicheck: 1707 coccicheck: 2021 $(Q)$(BASH) $(srctree)/scripts/$@ !! 1708 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ >> 1709 >> 1710 namespacecheck: >> 1711 $(PERL) $(srctree)/scripts/namespace.pl 2022 1712 2023 export_report: 1713 export_report: 2024 $(PERL) $(srctree)/scripts/export_rep 1714 $(PERL) $(srctree)/scripts/export_report.pl 2025 1715 2026 PHONY += checkstack kernelrelease kernelversi 1716 PHONY += checkstack kernelrelease kernelversion image_name 2027 1717 2028 # UML needs a little special treatment here. 1718 # UML needs a little special treatment here. It wants to use the host 2029 # toolchain, so needs $(SUBARCH) passed to ch 1719 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 2030 # else wants $(ARCH), including people doing 1720 # else wants $(ARCH), including people doing cross-builds, which means 2031 # that $(SUBARCH) doesn't work here. 1721 # that $(SUBARCH) doesn't work here. 2032 ifeq ($(ARCH), um) 1722 ifeq ($(ARCH), um) 2033 CHECKSTACK_ARCH := $(SUBARCH) 1723 CHECKSTACK_ARCH := $(SUBARCH) 2034 else 1724 else 2035 CHECKSTACK_ARCH := $(ARCH) 1725 CHECKSTACK_ARCH := $(ARCH) 2036 endif 1726 endif 2037 MINSTACKSIZE ?= 100 << 2038 checkstack: 1727 checkstack: 2039 $(OBJDUMP) -d vmlinux $$(find . -name 1728 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 2040 $(PERL) $(srctree)/scripts/checkstack !! 1729 $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 2041 1730 2042 kernelrelease: 1731 kernelrelease: 2043 @$(filechk_kernel.release) !! 1732 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 2044 1733 2045 kernelversion: 1734 kernelversion: 2046 @echo $(KERNELVERSION) 1735 @echo $(KERNELVERSION) 2047 1736 2048 image_name: 1737 image_name: 2049 @echo $(KBUILD_IMAGE) 1738 @echo $(KBUILD_IMAGE) 2050 1739 2051 PHONY += run-command !! 1740 # Clear a bunch of variables before executing the submake 2052 run-command: !! 1741 2053 $(Q)$(KBUILD_RUN_COMMAND) !! 1742 ifeq ($(quiet),silent_) >> 1743 tools_silent=s >> 1744 endif >> 1745 >> 1746 tools/: FORCE >> 1747 $(Q)mkdir -p $(objtree)/tools >> 1748 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ >> 1749 >> 1750 tools/%: FORCE >> 1751 $(Q)mkdir -p $(objtree)/tools >> 1752 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ $* >> 1753 >> 1754 # Single targets >> 1755 # --------------------------------------------------------------------------- >> 1756 # Single targets are compatible with: >> 1757 # - build with mixed source and output >> 1758 # - build with separate output dir 'make O=...' >> 1759 # - external modules >> 1760 # >> 1761 # target-dir => where to store outputfile >> 1762 # build-dir => directory in kernel source tree to use >> 1763 >> 1764 build-target = $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD)/)$@ >> 1765 build-dir = $(patsubst %/,%,$(dir $(build-target))) >> 1766 >> 1767 %.i: prepare FORCE >> 1768 $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) >> 1769 %.ll: prepare FORCE >> 1770 $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) >> 1771 %.lst: prepare FORCE >> 1772 $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) >> 1773 %.o: prepare FORCE >> 1774 $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) >> 1775 %.s: prepare FORCE >> 1776 $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) >> 1777 %.symtypes: prepare FORCE >> 1778 $(Q)$(MAKE) $(build)=$(build-dir) $(build-target) >> 1779 ifeq ($(KBUILD_EXTMOD),) >> 1780 # For the single build of an in-tree module, use a temporary file to avoid >> 1781 # the situation of modules_install installing an invalid modules.order. >> 1782 %.ko: MODORDER := .modules.tmp >> 1783 endif >> 1784 %.ko: prepare FORCE >> 1785 $(Q)$(MAKE) $(build)=$(build-dir) $(build-target:.ko=.mod) >> 1786 $(Q)echo $(build-target) > $(MODORDER) >> 1787 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1788 >> 1789 # Modules >> 1790 PHONY += / >> 1791 /: ./ >> 1792 >> 1793 %/: prepare FORCE >> 1794 $(Q)$(MAKE) KBUILD_MODULES=1 $(build)=$(build-dir) need-modorder=1 >> 1795 >> 1796 # FIXME Should go into a make.lib or something >> 1797 # =========================================================================== >> 1798 >> 1799 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) >> 1800 cmd_rmdirs = rm -rf $(rm-dirs) 2054 1801 2055 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 1802 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2056 cmd_rmfiles = rm -rf $(rm-files) !! 1803 cmd_rmfiles = rm -f $(rm-files) >> 1804 >> 1805 # Run depmod only if we have System.map and depmod is executable >> 1806 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) >> 1807 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ >> 1808 $(KERNELRELEASE) 2057 1809 2058 # read saved command lines for existing targe 1810 # read saved command lines for existing targets 2059 existing-targets := $(wildcard $(sort $(targe 1811 existing-targets := $(wildcard $(sort $(targets))) 2060 1812 2061 -include $(foreach f,$(existing-targets),$(di 1813 -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 2062 1814 2063 endif # config-build !! 1815 endif # ifeq ($(config-targets),1) 2064 endif # mixed-build !! 1816 endif # ifeq ($(mixed-targets),1) 2065 endif # need-sub-make !! 1817 endif # need-sub-make 2066 1818 2067 PHONY += FORCE 1819 PHONY += FORCE 2068 FORCE: 1820 FORCE: 2069 1821 2070 # Declare the contents of the PHONY variable 1822 # Declare the contents of the PHONY variable as phony. We keep that 2071 # information in a variable so we can use it 1823 # information in a variable so we can use it in if_changed and friends. 2072 .PHONY: $(PHONY) 1824 .PHONY: $(PHONY)
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