1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0 2 VERSION = 6 !! 2 VERSION = 4 3 PATCHLEVEL = 12 !! 3 PATCHLEVEL = 19 4 SUBLEVEL = 0 !! 4 SUBLEVEL = 323 5 EXTRAVERSION = -rc7 !! 5 EXTRAVERSION = 6 NAME = Baby Opossum Posse !! 6 NAME = "People's Front" 7 7 8 # *DOCUMENTATION* 8 # *DOCUMENTATION* 9 # To see a list of typical targets execute "ma 9 # To see a list of typical targets execute "make help" 10 # More info can be located in ./README 10 # More info can be located in ./README 11 # Comments in this file are targeted only to t 11 # Comments in this file are targeted only to the developer, do not 12 # expect to learn how to build the kernel read 12 # expect to learn how to build the kernel reading this file. 13 13 14 ifeq ($(filter output-sync,$(.FEATURES)),) !! 14 # That's our default target when none is given on the command line 15 $(error GNU Make >= 4.0 is required. Your Make !! 15 PHONY := _all 16 endif !! 16 _all: 17 17 18 $(if $(filter __%, $(MAKECMDGOALS)), \ !! 18 # o Do not use make's built-in rules and variables 19 $(error targets prefixed with '__' are !! 19 # (this increases performance and avoids hard-to-debug behaviour); >> 20 # o Look for make include files relative to root of kernel src >> 21 MAKEFLAGS += -rR --include-dir=$(CURDIR) 20 22 21 # That's our default target when none is given !! 23 # Avoid funny character set dependencies 22 PHONY := __all !! 24 unexport LC_ALL 23 __all: !! 25 LC_COLLATE=C >> 26 LC_NUMERIC=C >> 27 export LC_COLLATE LC_NUMERIC >> 28 >> 29 # Avoid interference with shell env settings >> 30 unexport GREP_OPTIONS 24 31 25 # We are using a recursive build, so we need t 32 # We are using a recursive build, so we need to do a little thinking 26 # to get the ordering right. 33 # to get the ordering right. 27 # 34 # 28 # Most importantly: sub-Makefiles should only 35 # Most importantly: sub-Makefiles should only ever modify files in 29 # their own directory. If in some directory we 36 # their own directory. If in some directory we have a dependency on 30 # a file in another dir (which doesn't happen 37 # a file in another dir (which doesn't happen often, but it's often 31 # unavoidable when linking the built-in.a targ 38 # unavoidable when linking the built-in.a targets which finally 32 # turn into vmlinux), we will call a sub make 39 # turn into vmlinux), we will call a sub make in that other dir, and 33 # after that we are sure that everything which 40 # after that we are sure that everything which is in that other dir 34 # is now up to date. 41 # is now up to date. 35 # 42 # 36 # The only cases where we need to modify files 43 # The only cases where we need to modify files which have global 37 # effects are thus separated out and done befo 44 # effects are thus separated out and done before the recursive 38 # descending is started. They are now explicit 45 # descending is started. They are now explicitly listed as the 39 # prepare rule. 46 # prepare rule. 40 47 41 this-makefile := $(lastword $(MAKEFILE_LIST)) << 42 abs_srctree := $(realpath $(dir $(this-makefil << 43 abs_objtree := $(CURDIR) << 44 << 45 ifneq ($(sub_make_done),1) << 46 << 47 # Do not use make's built-in rules and variabl << 48 # (this increases performance and avoids hard- << 49 MAKEFLAGS += -rR << 50 << 51 # Avoid funny character set dependencies << 52 unexport LC_ALL << 53 LC_COLLATE=C << 54 LC_NUMERIC=C << 55 export LC_COLLATE LC_NUMERIC << 56 << 57 # Avoid interference with shell env settings << 58 unexport GREP_OPTIONS << 59 << 60 # Beautify output 48 # Beautify output 61 # -------------------------------------------- 49 # --------------------------------------------------------------------------- 62 # 50 # 63 # Most of build commands in Kbuild start with !! 51 # Normally, we echo the whole command before executing it. By making 64 # "quiet_cmd_*". If defined, the short log is !! 52 # that echo $($(quiet)$(cmd)), we now have the possibility to set 65 # that command is printed by default. !! 53 # $(quiet) to choose other forms of output instead, e.g. 66 # !! 54 # 67 # e.g.) !! 55 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 68 # quiet_cmd_depmod = DEPMOD $(MODLIB) !! 56 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 69 # cmd_depmod = $(srctree)/scripts/dep !! 57 # >> 58 # If $(quiet) is empty, the whole command will be printed. >> 59 # If it is set to "quiet_", only the short version will be printed. >> 60 # If it is set to "silent_", nothing will be printed at all, since >> 61 # the variable $(silent_cmd_cc_o_c) doesn't exist. 70 # 62 # 71 # A simple variant is to prefix commands with 63 # A simple variant is to prefix commands with $(Q) - that's useful 72 # for commands that shall be hidden in non-ver 64 # for commands that shall be hidden in non-verbose mode. 73 # 65 # 74 # $(Q)$(MAKE) $(build)=scripts/basic !! 66 # $(Q)ln $@ :< 75 # 67 # 76 # If KBUILD_VERBOSE contains 1, the whole comm !! 68 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 77 # If KBUILD_VERBOSE contains 2, the reason for !! 69 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 78 # 70 # 79 # To put more focus on warnings, be less verbo 71 # To put more focus on warnings, be less verbose as default 80 # Use 'make V=1' to see the full commands 72 # Use 'make V=1' to see the full commands 81 73 82 ifeq ("$(origin V)", "command line") 74 ifeq ("$(origin V)", "command line") 83 KBUILD_VERBOSE = $(V) 75 KBUILD_VERBOSE = $(V) 84 endif 76 endif >> 77 ifndef KBUILD_VERBOSE >> 78 KBUILD_VERBOSE = 0 >> 79 endif 85 80 86 quiet = quiet_ !! 81 ifeq ($(KBUILD_VERBOSE),1) 87 Q = @ << 88 << 89 ifneq ($(findstring 1, $(KBUILD_VERBOSE)),) << 90 quiet = 82 quiet = 91 Q = 83 Q = >> 84 else >> 85 quiet=quiet_ >> 86 Q = @ 92 endif 87 endif 93 88 94 # If the user is running make -s (silent mode) 89 # If the user is running make -s (silent mode), suppress echoing of 95 # commands 90 # commands 96 ifneq ($(findstring s,$(firstword -$(MAKEFLAGS !! 91 # make-4.0 (and later) keep single letter options in the 1st word of MAKEFLAGS. 97 quiet=silent_ << 98 override KBUILD_VERBOSE := << 99 endif << 100 92 101 export quiet Q KBUILD_VERBOSE !! 93 ifeq ($(filter 3.%,$(MAKE_VERSION)),) 102 !! 94 silence:=$(findstring s,$(firstword -$(MAKEFLAGS))) 103 # Call a source code checker (by default, "spa !! 95 else 104 # C compilation. !! 96 silence:=$(findstring s,$(filter-out --%,$(MAKEFLAGS))) 105 # << 106 # Use 'make C=1' to enable checking of only re << 107 # Use 'make C=2' to enable checking of *all* s << 108 # of whether they are re-compiled or not. << 109 # << 110 # See the file "Documentation/dev-tools/sparse << 111 # including where to get the "sparse" utility. << 112 << 113 ifeq ("$(origin C)", "command line") << 114 KBUILD_CHECKSRC = $(C) << 115 endif << 116 ifndef KBUILD_CHECKSRC << 117 KBUILD_CHECKSRC = 0 << 118 endif << 119 << 120 export KBUILD_CHECKSRC << 121 << 122 # Enable "clippy" (a linter) as part of the Ru << 123 # << 124 # Use 'make CLIPPY=1' to enable it. << 125 ifeq ("$(origin CLIPPY)", "command line") << 126 KBUILD_CLIPPY := $(CLIPPY) << 127 endif << 128 << 129 export KBUILD_CLIPPY << 130 << 131 # Use make M=dir or set the environment variab << 132 # directory of external module to build. Setti << 133 ifeq ("$(origin M)", "command line") << 134 KBUILD_EXTMOD := $(M) << 135 endif << 136 << 137 $(if $(word 2, $(KBUILD_EXTMOD)), \ << 138 $(error building multiple external mod << 139 << 140 $(foreach x, % :, $(if $(findstring $x, $(KBUI << 141 $(error module directory path cannot c << 142 << 143 # Remove trailing slashes << 144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) << 145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM << 146 endif 97 endif 147 98 148 export KBUILD_EXTMOD !! 99 ifeq ($(silence),s) 149 !! 100 quiet=silent_ 150 # backward compatibility !! 101 tools_silent=s 151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC << 152 << 153 ifeq ("$(origin W)", "command line") << 154 KBUILD_EXTRA_WARN := $(W) << 155 endif 102 endif 156 103 157 export KBUILD_EXTRA_WARN !! 104 export quiet Q KBUILD_VERBOSE 158 105 159 # Kbuild will save output files in the current !! 106 # kbuild supports saving output files in a separate directory. 160 # This does not need to match to the root of t !! 107 # To locate output files in a separate directory two syntaxes are supported. 161 # !! 108 # In both cases the working directory must be the root of the kernel src. 162 # For example, you can do this: << 163 # << 164 # cd /dir/to/store/output/files; make -f /dir << 165 # << 166 # If you want to save output files in a differ << 167 # two syntaxes to specify it. << 168 # << 169 # 1) O= 109 # 1) O= 170 # Use "make O=dir/to/store/output/files/" 110 # Use "make O=dir/to/store/output/files/" 171 # 111 # 172 # 2) Set KBUILD_OUTPUT 112 # 2) Set KBUILD_OUTPUT 173 # Set the environment variable KBUILD_OUTPUT t !! 113 # Set the environment variable KBUILD_OUTPUT to point to the directory 174 # export KBUILD_OUTPUT=dir/to/store/output/fil !! 114 # where the output files shall be placed. >> 115 # export KBUILD_OUTPUT=dir/to/store/output/files/ >> 116 # make 175 # 117 # 176 # The O= assignment takes precedence over the 118 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 177 # variable. 119 # variable. 178 120 179 # Do we want to change the working directory? !! 121 # KBUILD_SRC is not intended to be used by the regular user (for now), >> 122 # it is set on invocation of make with KBUILD_OUTPUT or O= specified. >> 123 ifeq ($(KBUILD_SRC),) >> 124 >> 125 # OK, Make called in directory where kernel src resides >> 126 # Do we want to locate output files in a separate directory? 180 ifeq ("$(origin O)", "command line") 127 ifeq ("$(origin O)", "command line") 181 KBUILD_OUTPUT := $(O) 128 KBUILD_OUTPUT := $(O) 182 endif 129 endif 183 130 184 ifneq ($(KBUILD_OUTPUT),) !! 131 # Cancel implicit rules on top Makefile 185 # $(realpath ...) gets empty if the path does !! 132 $(CURDIR)/Makefile Makefile: ; 186 $(shell mkdir -p "$(KBUILD_OUTPUT)") << 187 # $(realpath ...) resolves symlinks << 188 abs_objtree := $(realpath $(KBUILD_OUTPUT)) << 189 $(if $(abs_objtree),,$(error failed to create << 190 endif # ifneq ($(KBUILD_OUTPUT),) << 191 133 192 ifneq ($(words $(subst :, ,$(abs_srctree))), 1 !! 134 ifneq ($(words $(subst :, ,$(CURDIR))), 1) 193 $(error source directory cannot contain spaces !! 135 $(error main directory cannot contain spaces nor colons) 194 endif 136 endif 195 137 196 export sub_make_done := 1 !! 138 ifneq ($(KBUILD_OUTPUT),) >> 139 # check that the output directory actually exists >> 140 saved-output := $(KBUILD_OUTPUT) >> 141 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ >> 142 && pwd) >> 143 $(if $(KBUILD_OUTPUT),, \ >> 144 $(error failed to create output directory "$(saved-output)")) 197 145 198 endif # sub_make_done !! 146 PHONY += $(MAKECMDGOALS) sub-make 199 147 200 ifeq ($(abs_objtree),$(CURDIR)) !! 148 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 201 # Suppress "Entering directory ..." if we are !! 149 @: 202 no-print-directory := --no-print-directory << 203 else << 204 # Recursion to show "Entering directory ..." << 205 need-sub-make := 1 << 206 endif << 207 150 208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 151 # Invoke a second make in the output directory, passing relevant variables 209 # If --no-print-directory is unset, recurse on !! 152 sub-make: 210 # You may end up recursing into __sub-make twi !! 153 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 211 # behavior change in GNU Make 4.4.1. !! 154 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 212 need-sub-make := 1 << 213 endif << 214 155 215 ifeq ($(need-sub-make),1) !! 156 # Leave processing to above invocation of make >> 157 skip-makefile := 1 >> 158 endif # ifneq ($(KBUILD_OUTPUT),) >> 159 endif # ifeq ($(KBUILD_SRC),) 216 160 217 PHONY += $(MAKECMDGOALS) __sub-make !! 161 # We process the rest of the Makefile if this is the final invocation of make >> 162 ifeq ($(skip-makefile),) 218 163 219 $(filter-out $(this-makefile), $(MAKECMDGOALS) !! 164 # Do not print "Entering directory ...", 220 @: !! 165 # but we want to display it when entering to the output directory >> 166 # so that IDEs/editors are able to understand relative filenames. >> 167 MAKEFLAGS += --no-print-directory 221 168 222 # Invoke a second make in the output directory !! 169 # Call a source code checker (by default, "sparse") as part of the 223 __sub-make: !! 170 # C compilation. 224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 171 # 225 -f $(abs_srctree)/Makefile $(MAKECMDGO !! 172 # Use 'make C=1' to enable checking of only re-compiled files. >> 173 # Use 'make C=2' to enable checking of *all* source files, regardless >> 174 # of whether they are re-compiled or not. >> 175 # >> 176 # See the file "Documentation/dev-tools/sparse.rst" for more details, >> 177 # including where to get the "sparse" utility. >> 178 >> 179 ifeq ("$(origin C)", "command line") >> 180 KBUILD_CHECKSRC = $(C) >> 181 endif >> 182 ifndef KBUILD_CHECKSRC >> 183 KBUILD_CHECKSRC = 0 >> 184 endif 226 185 227 else # need-sub-make !! 186 # Use make M=dir to specify directory of external module to build >> 187 # Old syntax make ... SUBDIRS=$PWD is still supported >> 188 # Setting the environment variable KBUILD_EXTMOD take precedence >> 189 ifdef SUBDIRS >> 190 KBUILD_EXTMOD ?= $(SUBDIRS) >> 191 endif 228 192 229 # We process the rest of the Makefile if this !! 193 ifeq ("$(origin M)", "command line") >> 194 KBUILD_EXTMOD := $(M) >> 195 endif 230 196 231 ifeq ($(abs_srctree),$(abs_objtree)) !! 197 ifeq ($(KBUILD_SRC),) 232 # building in the source tree 198 # building in the source tree 233 srctree := . 199 srctree := . 234 building_out_of_srctree := << 235 else 200 else 236 ifeq ($(abs_srctree)/,$(dir $(abs_objt !! 201 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) 237 # building in a subdirectory o 202 # building in a subdirectory of the source tree 238 srctree := .. 203 srctree := .. 239 else 204 else 240 srctree := $(abs_srctree) !! 205 srctree := $(KBUILD_SRC) 241 endif 206 endif 242 building_out_of_srctree := 1 << 243 endif 207 endif 244 208 245 ifneq ($(KBUILD_ABS_SRCTREE),) !! 209 export KBUILD_CHECKSRC KBUILD_EXTMOD KBUILD_SRC 246 srctree := $(abs_srctree) << 247 endif << 248 210 249 objtree := . 211 objtree := . >> 212 src := $(srctree) >> 213 obj := $(objtree) 250 214 251 VPATH := !! 215 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 252 216 253 ifeq ($(KBUILD_EXTMOD),) !! 217 export srctree objtree VPATH 254 ifdef building_out_of_srctree << 255 VPATH := $(srctree) << 256 endif << 257 endif << 258 << 259 export building_out_of_srctree srctree objtree << 260 218 261 # To make sure we do not include .config for a 219 # To make sure we do not include .config for any of the *config targets 262 # catch them early, and hand them over to scri 220 # catch them early, and hand them over to scripts/kconfig/Makefile 263 # It is allowed to specify more targets when c 221 # It is allowed to specify more targets when calling make, including 264 # mixing *config targets and build targets. 222 # mixing *config targets and build targets. 265 # For example 'make oldconfig all'. 223 # For example 'make oldconfig all'. 266 # Detect when mixed targets is specified, and 224 # Detect when mixed targets is specified, and make a second invocation 267 # of make so .config is not included in this c 225 # of make so .config is not included in this case either (for *config). 268 226 269 version_h := include/generated/uapi/linux/vers 227 version_h := include/generated/uapi/linux/version.h >> 228 old_version_h := include/linux/version.h 270 229 271 clean-targets := %clean mrproper cleandocs 230 clean-targets := %clean mrproper cleandocs 272 no-dot-config-targets := $(clean-targets) \ 231 no-dot-config-targets := $(clean-targets) \ 273 cscope gtags TAGS tag 232 cscope gtags TAGS tags help% %docs check% coccicheck \ 274 $(version_h) headers !! 233 $(version_h) headers_% archheaders archscripts \ 275 %asm-generic kernelve !! 234 %asm-generic kernelversion %src-pkg 276 outputmakefile rustav !! 235 no-sync-config-targets := $(no-dot-config-targets) install %install \ 277 no-sync-config-targets := $(no-dot-config-targ !! 236 kernelrelease 278 image_name !! 237 279 single-targets := %.a %.i %.ko %.lds %.ll %.ls !! 238 config-targets := 0 280 !! 239 mixed-targets := 0 281 config-build := !! 240 dot-config := 1 282 mixed-build := !! 241 may-sync-config := 1 283 need-config := 1 << 284 may-sync-config := 1 << 285 single-build := << 286 242 287 ifneq ($(filter $(no-dot-config-targets), $(MA 243 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 288 ifeq ($(filter-out $(no-dot-config-targets !! 244 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 289 need-config := !! 245 dot-config := 0 290 endif !! 246 endif 291 endif 247 endif 292 248 293 ifneq ($(filter $(no-sync-config-targets), $(M 249 ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) 294 ifeq ($(filter-out $(no-sync-config-target !! 250 ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) 295 may-sync-config := !! 251 may-sync-config := 0 296 endif !! 252 endif 297 endif 253 endif 298 254 299 need-compiler := $(may-sync-config) << 300 << 301 ifneq ($(KBUILD_EXTMOD),) 255 ifneq ($(KBUILD_EXTMOD),) 302 may-sync-config := !! 256 may-sync-config := 0 303 endif 257 endif 304 258 305 ifeq ($(KBUILD_EXTMOD),) 259 ifeq ($(KBUILD_EXTMOD),) 306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 260 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 307 config-build := 1 !! 261 config-targets := 1 308 ifneq ($(words $(MAKECMDGOALS)),1) !! 262 ifneq ($(words $(MAKECMDGOALS)),1) 309 mixed-build := 1 !! 263 mixed-targets := 1 >> 264 endif 310 endif 265 endif 311 endif << 312 endif << 313 << 314 # We cannot build single targets and the other << 315 ifneq ($(filter $(single-targets), $(MAKECMDGO << 316 single-build := 1 << 317 ifneq ($(filter-out $(single-targets), $(M << 318 mixed-build := 1 << 319 endif << 320 endif 266 endif 321 267 322 # For "make -j clean all", "make -j mrproper d 268 # For "make -j clean all", "make -j mrproper defconfig all", etc. 323 ifneq ($(filter $(clean-targets),$(MAKECMDGOAL 269 ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 324 ifneq ($(filter-out $(clean-targets),$(MAK !! 270 ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 325 mixed-build := 1 !! 271 mixed-targets := 1 326 endif !! 272 endif 327 endif 273 endif 328 274 329 # install and modules_install need also be pro 275 # install and modules_install need also be processed one by one 330 ifneq ($(filter install,$(MAKECMDGOALS)),) 276 ifneq ($(filter install,$(MAKECMDGOALS)),) 331 ifneq ($(filter modules_install,$(MAKECMDG !! 277 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 332 mixed-build := 1 !! 278 mixed-targets := 1 333 endif !! 279 endif 334 endif 280 endif 335 281 336 ifdef mixed-build !! 282 ifeq ($(mixed-targets),1) 337 # ============================================ 283 # =========================================================================== 338 # We're called with mixed targets (*config and 284 # We're called with mixed targets (*config and build targets). 339 # Handle them one by one. 285 # Handle them one by one. 340 286 341 PHONY += $(MAKECMDGOALS) __build_one_by_one 287 PHONY += $(MAKECMDGOALS) __build_one_by_one 342 288 343 $(MAKECMDGOALS): __build_one_by_one !! 289 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 344 @: 290 @: 345 291 346 __build_one_by_one: 292 __build_one_by_one: 347 $(Q)set -e; \ 293 $(Q)set -e; \ 348 for i in $(MAKECMDGOALS); do \ 294 for i in $(MAKECMDGOALS); do \ 349 $(MAKE) -f $(srctree)/Makefile 295 $(MAKE) -f $(srctree)/Makefile $$i; \ 350 done 296 done 351 297 352 else # !mixed-build !! 298 else 353 299 354 include $(srctree)/scripts/Kbuild.include !! 300 # We need some generic definitions (do not try to remake the file). >> 301 scripts/Kbuild.include: ; >> 302 include scripts/Kbuild.include 355 303 356 # Read KERNELRELEASE from include/config/kerne 304 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 357 KERNELRELEASE = $(call read-file, include/conf !! 305 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. 306 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA 307 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 360 308 361 include $(srctree)/scripts/subarch.include !! 309 include scripts/subarch.include 362 310 363 # Cross compiling and selecting different set 311 # Cross compiling and selecting different set of gcc/bin-utils 364 # -------------------------------------------- 312 # --------------------------------------------------------------------------- 365 # 313 # 366 # When performing cross compilation for other 314 # When performing cross compilation for other architectures ARCH shall be set 367 # to the target architecture. (See arch/* for 315 # to the target architecture. (See arch/* for the possibilities). 368 # ARCH can be set during invocation of make: 316 # ARCH can be set during invocation of make: 369 # make ARCH=arm64 !! 317 # make ARCH=ia64 370 # Another way is to have ARCH set in the envir 318 # Another way is to have ARCH set in the environment. 371 # The default ARCH is the host where make is e 319 # The default ARCH is the host where make is executed. 372 320 373 # CROSS_COMPILE specify the prefix used for al 321 # CROSS_COMPILE specify the prefix used for all executables used 374 # during compilation. Only gcc and related bin 322 # during compilation. Only gcc and related bin-utils executables 375 # are prefixed with $(CROSS_COMPILE). 323 # are prefixed with $(CROSS_COMPILE). 376 # CROSS_COMPILE can be set on the command line 324 # CROSS_COMPILE can be set on the command line 377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 325 # make CROSS_COMPILE=ia64-linux- 378 # Alternatively CROSS_COMPILE can be set in th 326 # Alternatively CROSS_COMPILE can be set in the environment. 379 # Default value for CROSS_COMPILE is not to pr 327 # Default value for CROSS_COMPILE is not to prefix executables 380 # Note: Some architectures assign CROSS_COMPIL 328 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 381 ARCH ?= $(SUBARCH) 329 ARCH ?= $(SUBARCH) 382 330 383 # Architecture as present in compile.h 331 # Architecture as present in compile.h 384 UTS_MACHINE := $(ARCH) 332 UTS_MACHINE := $(ARCH) 385 SRCARCH := $(ARCH) 333 SRCARCH := $(ARCH) 386 334 387 # Additional ARCH settings for x86 335 # Additional ARCH settings for x86 388 ifeq ($(ARCH),i386) 336 ifeq ($(ARCH),i386) 389 SRCARCH := x86 337 SRCARCH := x86 390 endif 338 endif 391 ifeq ($(ARCH),x86_64) 339 ifeq ($(ARCH),x86_64) 392 SRCARCH := x86 340 SRCARCH := x86 393 endif 341 endif 394 342 395 # Additional ARCH settings for sparc 343 # Additional ARCH settings for sparc 396 ifeq ($(ARCH),sparc32) 344 ifeq ($(ARCH),sparc32) 397 SRCARCH := sparc 345 SRCARCH := sparc 398 endif 346 endif 399 ifeq ($(ARCH),sparc64) 347 ifeq ($(ARCH),sparc64) 400 SRCARCH := sparc 348 SRCARCH := sparc 401 endif 349 endif 402 350 403 # Additional ARCH settings for parisc !! 351 # Additional ARCH settings for sh 404 ifeq ($(ARCH),parisc64) !! 352 ifeq ($(ARCH),sh64) 405 SRCARCH := parisc !! 353 SRCARCH := sh 406 endif << 407 << 408 export cross_compiling := << 409 ifneq ($(SRCARCH),$(SUBARCH)) << 410 cross_compiling := 1 << 411 endif 354 endif 412 355 413 KCONFIG_CONFIG ?= .config 356 KCONFIG_CONFIG ?= .config 414 export KCONFIG_CONFIG 357 export KCONFIG_CONFIG 415 358 416 # SHELL used by kbuild 359 # SHELL used by kbuild 417 CONFIG_SHELL := sh !! 360 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ >> 361 else if [ -x /bin/bash ]; then echo /bin/bash; \ >> 362 else echo sh; fi ; fi) 418 363 419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 364 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG 365 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d 366 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 422 367 423 ifneq ($(LLVM),) 368 ifneq ($(LLVM),) 424 ifneq ($(filter %/,$(LLVM)),) !! 369 HOSTCC = clang 425 LLVM_PREFIX := $(LLVM) !! 370 HOSTCXX = clang++ 426 else ifneq ($(filter -%,$(LLVM)),) << 427 LLVM_SUFFIX := $(LLVM) << 428 endif << 429 << 430 HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) << 431 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX) << 432 else 371 else 433 HOSTCC = gcc 372 HOSTCC = gcc 434 HOSTCXX = g++ 373 HOSTCXX = g++ 435 endif 374 endif 436 HOSTRUSTC = rustc !! 375 KBUILD_HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \ 437 HOSTPKG_CONFIG = pkg-config !! 376 -fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) \ 438 !! 377 $(HOSTCFLAGS) 439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto !! 378 KBUILD_HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 440 -O2 -fomit-frame-poin << 441 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) << 442 KBUILD_USERLDFLAGS := $(USERLDFLAGS) << 443 << 444 # These flags apply to all Rust code in the tr << 445 # host programs. << 446 export rust_common_flags := --edition=2021 \ << 447 -Zbinary_dep_depin << 448 -Astable_features << 449 -Dunsafe_op_in_uns << 450 -Dnon_ascii_idents << 451 -Wrust_2018_idioms << 452 -Wunreachable_pub << 453 -Wmissing_docs \ << 454 -Wrustdoc::missing << 455 -Wclippy::all \ << 456 -Wclippy::mut_mut << 457 -Wclippy::needless << 458 -Wclippy::needless << 459 -Wclippy::no_mangl << 460 -Wclippy::dbg_macr << 461 << 462 KBUILD_HOSTCFLAGS := $(KBUILD_USERHOSTCFLAGS << 463 $(HOSTCFLAGS) -I $(srct << 464 KBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CF << 465 -I $(srctree)/scripts/i << 466 KBUILD_HOSTRUSTFLAGS := $(rust_common_flags) - << 467 -Zallow-features= $(HO << 468 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(H 379 KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 469 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOST 380 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 470 381 471 # Make variables (CC, etc...) 382 # Make variables (CC, etc...) 472 CPP = $(CC) -E 383 CPP = $(CC) -E 473 ifneq ($(LLVM),) 384 ifneq ($(LLVM),) 474 CC = $(LLVM_PREFIX)clang$(LLVM_SU !! 385 CC = clang 475 LD = $(LLVM_PREFIX)ld.lld$(LLVM_S !! 386 LD = ld.lld 476 AR = $(LLVM_PREFIX)llvm-ar$(LLVM_ !! 387 AR = llvm-ar 477 NM = $(LLVM_PREFIX)llvm-nm$(LLVM_ !! 388 NM = llvm-nm 478 OBJCOPY = $(LLVM_PREFIX)llvm-objcopy$( !! 389 OBJCOPY = llvm-objcopy 479 OBJDUMP = $(LLVM_PREFIX)llvm-objdump$( !! 390 OBJDUMP = llvm-objdump 480 READELF = $(LLVM_PREFIX)llvm-readelf$( !! 391 READELF = llvm-readelf 481 STRIP = $(LLVM_PREFIX)llvm-strip$(LL !! 392 OBJSIZE = llvm-size >> 393 STRIP = llvm-strip 482 else 394 else 483 CC = $(CROSS_COMPILE)gcc 395 CC = $(CROSS_COMPILE)gcc 484 LD = $(CROSS_COMPILE)ld 396 LD = $(CROSS_COMPILE)ld 485 AR = $(CROSS_COMPILE)ar 397 AR = $(CROSS_COMPILE)ar 486 NM = $(CROSS_COMPILE)nm 398 NM = $(CROSS_COMPILE)nm 487 OBJCOPY = $(CROSS_COMPILE)objcopy 399 OBJCOPY = $(CROSS_COMPILE)objcopy 488 OBJDUMP = $(CROSS_COMPILE)objdump 400 OBJDUMP = $(CROSS_COMPILE)objdump 489 READELF = $(CROSS_COMPILE)readelf 401 READELF = $(CROSS_COMPILE)readelf >> 402 OBJSIZE = $(CROSS_COMPILE)size 490 STRIP = $(CROSS_COMPILE)strip 403 STRIP = $(CROSS_COMPILE)strip 491 endif 404 endif 492 RUSTC = rustc << 493 RUSTDOC = rustdoc << 494 RUSTFMT = rustfmt << 495 CLIPPY_DRIVER = clippy-driver << 496 BINDGEN = bindgen << 497 PAHOLE = pahole << 498 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve << 499 LEX = flex 405 LEX = flex 500 YACC = bison 406 YACC = bison 501 AWK = awk 407 AWK = awk >> 408 GENKSYMS = scripts/genksyms/genksyms 502 INSTALLKERNEL := installkernel 409 INSTALLKERNEL := installkernel >> 410 DEPMOD = depmod 503 PERL = perl 411 PERL = perl >> 412 PYTHON = python >> 413 PYTHON2 = python2 504 PYTHON3 = python3 414 PYTHON3 = python3 505 CHECK = sparse 415 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 << 514 416 515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC 417 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 516 -Wbitwise -Wno-return-void - 418 -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 517 NOSTDINC_FLAGS := !! 419 NOSTDINC_FLAGS = 518 CFLAGS_MODULE = 420 CFLAGS_MODULE = 519 RUSTFLAGS_MODULE = << 520 AFLAGS_MODULE = 421 AFLAGS_MODULE = 521 LDFLAGS_MODULE = 422 LDFLAGS_MODULE = 522 CFLAGS_KERNEL = 423 CFLAGS_KERNEL = 523 RUSTFLAGS_KERNEL = << 524 AFLAGS_KERNEL = 424 AFLAGS_KERNEL = 525 LDFLAGS_vmlinux = 425 LDFLAGS_vmlinux = 526 426 527 # Use USERINCLUDE when you must reference the 427 # Use USERINCLUDE when you must reference the UAPI directories only. 528 USERINCLUDE := \ 428 USERINCLUDE := \ 529 -I$(srctree)/arch/$(SRCARCH)/i 429 -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 530 -I$(objtree)/arch/$(SRCARCH)/i 430 -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 531 -I$(srctree)/include/uapi \ 431 -I$(srctree)/include/uapi \ 532 -I$(objtree)/include/generated 432 -I$(objtree)/include/generated/uapi \ 533 -include $(srctree)/include/li << 534 -include $(srctree)/include/li 433 -include $(srctree)/include/linux/kconfig.h 535 434 536 # Use LINUXINCLUDE when you must reference the 435 # Use LINUXINCLUDE when you must reference the include/ directory. 537 # Needed to be compatible with the O= option 436 # Needed to be compatible with the O= option 538 LINUXINCLUDE := \ 437 LINUXINCLUDE := \ 539 -I$(srctree)/arch/$(SRCARCH)/i 438 -I$(srctree)/arch/$(SRCARCH)/include \ 540 -I$(objtree)/arch/$(SRCARCH)/i 439 -I$(objtree)/arch/$(SRCARCH)/include/generated \ 541 $(if $(building_out_of_srctree !! 440 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 542 -I$(objtree)/include \ 441 -I$(objtree)/include \ 543 $(USERINCLUDE) 442 $(USERINCLUDE) 544 443 545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE !! 444 KBUILD_AFLAGS := -D__ASSEMBLY__ 546 !! 445 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 547 KBUILD_CFLAGS := !! 446 -fno-strict-aliasing -fno-common -fshort-wchar \ 548 KBUILD_CFLAGS += -std=gnu11 !! 447 -Werror-implicit-function-declaration \ 549 KBUILD_CFLAGS += -fshort-wchar !! 448 -Werror=return-type -Wno-format-security \ 550 KBUILD_CFLAGS += -funsigned-char !! 449 -std=gnu89 551 KBUILD_CFLAGS += -fno-common << 552 KBUILD_CFLAGS += -fno-PIE << 553 KBUILD_CFLAGS += -fno-strict-aliasing << 554 << 555 KBUILD_CPPFLAGS := -D__KERNEL__ 450 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 := 451 KBUILD_AFLAGS_KERNEL := 565 KBUILD_CFLAGS_KERNEL := 452 KBUILD_CFLAGS_KERNEL := 566 KBUILD_RUSTFLAGS_KERNEL := << 567 KBUILD_AFLAGS_MODULE := -DMODULE 453 KBUILD_AFLAGS_MODULE := -DMODULE 568 KBUILD_CFLAGS_MODULE := -DMODULE 454 KBUILD_CFLAGS_MODULE := -DMODULE 569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE !! 455 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 570 KBUILD_LDFLAGS_MODULE := << 571 KBUILD_LDFLAGS := 456 KBUILD_LDFLAGS := >> 457 GCC_PLUGINS_CFLAGS := 572 CLANG_FLAGS := 458 CLANG_FLAGS := 573 459 574 ifeq ($(KBUILD_CLIPPY),1) !! 460 export ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC 575 RUSTC_OR_CLIPPY_QUIET := CLIPPY !! 461 export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS 576 RUSTC_OR_CLIPPY = $(CLIPPY_DRIVER) !! 462 export MAKE LEX YACC AWK GENKSYMS INSTALLKERNEL PERL PYTHON PYTHON2 PYTHON3 UTS_MACHINE 577 else !! 463 export HOSTCXX KBUILD_HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 578 RUSTC_OR_CLIPPY_QUIET := RUSTC << 579 RUSTC_OR_CLIPPY = $(RUSTC) << 580 endif << 581 << 582 # Allows the usage of unstable features in sta << 583 export RUSTC_BOOTSTRAP := 1 << 584 << 585 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K << 586 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q << 587 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS << 588 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF << 589 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ << 590 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD << 591 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS << 592 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS << 593 464 594 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC 465 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 595 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU 466 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 596 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF !! 467 export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN 597 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 468 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 598 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 469 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 599 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 470 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL >> 471 export KBUILD_ARFLAGS >> 472 >> 473 # When compiling out-of-tree modules, put MODVERDIR in the module >> 474 # tree rather than in the kernel tree. The kernel tree might >> 475 # even be read-only. >> 476 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 600 477 601 # Files to ignore in find ... statements 478 # Files to ignore in find ... statements 602 479 603 export RCS_FIND_IGNORE := \( -name SCCS -o -na 480 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 604 -name CVS -o -name . 481 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 605 -prune -o 482 -prune -o >> 483 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ >> 484 --exclude CVS --exclude .pc --exclude .hg --exclude .git 606 485 607 # ============================================ 486 # =========================================================================== 608 # Rules shared between *config targets and bui 487 # Rules shared between *config targets and build targets 609 488 610 # Basic helpers built in scripts/basic/ 489 # Basic helpers built in scripts/basic/ 611 PHONY += scripts_basic 490 PHONY += scripts_basic 612 scripts_basic: 491 scripts_basic: 613 $(Q)$(MAKE) $(build)=scripts/basic 492 $(Q)$(MAKE) $(build)=scripts/basic >> 493 $(Q)rm -f .tmp_quiet_recordmcount >> 494 >> 495 # To avoid any implicit rule to kick in, define an empty command. >> 496 scripts/basic/%: scripts_basic ; 614 497 615 PHONY += outputmakefile 498 PHONY += outputmakefile 616 ifdef building_out_of_srctree << 617 # Before starting out-of-tree build, make sure << 618 # outputmakefile generates a Makefile in the o 499 # outputmakefile generates a Makefile in the output directory, if using a 619 # separate output directory. This allows conve 500 # separate output directory. This allows convenient use of make in the 620 # output directory. 501 # output directory. 621 # At the same time when output Makefile genera << 622 # ignore whole output directory << 623 << 624 quiet_cmd_makefile = GEN Makefile << 625 cmd_makefile = { \ << 626 echo "\# Automatically generated by $( << 627 echo "include $(srctree)/Makefile"; \ << 628 } > Makefile << 629 << 630 outputmakefile: 502 outputmakefile: 631 @if [ -f $(srctree)/.config -o \ !! 503 ifneq ($(KBUILD_SRC),) 632 -d $(srctree)/include/config << 633 -d $(srctree)/arch/$(SRCARCH) << 634 echo >&2 "***"; \ << 635 echo >&2 "*** The source tree << 636 echo >&2 "*** in $(abs_srctree << 637 echo >&2 "***"; \ << 638 false; \ << 639 fi << 640 $(Q)ln -fsn $(srctree) source 504 $(Q)ln -fsn $(srctree) source 641 $(call cmd,makefile) !! 505 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 642 $(Q)test -e .gitignore || \ !! 506 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 643 { echo "# this is build directory, ign << 644 endif 507 endif 645 508 646 # The expansion should be delayed until arch/$ !! 509 ifeq ($(cc-name),clang) 647 # Some architectures define CROSS_COMPILE in a !! 510 ifneq ($(CROSS_COMPILE),) 648 # CC_VERSION_TEXT and RUSTC_VERSION_TEXT are r !! 511 CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) 649 # need export), and from include/config/auto.c !! 512 GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) 650 # upgrade. !! 513 CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE)) 651 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC !! 514 GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) 652 RUSTC_VERSION_TEXT = $(subst $(pound),,$(shell !! 515 endif >> 516 ifneq ($(GCC_TOOLCHAIN),) >> 517 CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN) >> 518 endif >> 519 ifneq ($(LLVM_IAS),1) >> 520 CLANG_FLAGS += -no-integrated-as >> 521 endif >> 522 CLANG_FLAGS += -Werror=unknown-warning-option >> 523 KBUILD_CFLAGS += $(CLANG_FLAGS) >> 524 KBUILD_AFLAGS += $(CLANG_FLAGS) >> 525 export CLANG_FLAGS >> 526 endif >> 527 >> 528 RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register >> 529 RETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register >> 530 RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk >> 531 RETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline >> 532 RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG))) >> 533 RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG))) >> 534 export RETPOLINE_CFLAGS >> 535 export RETPOLINE_VDSO_CFLAGS 653 536 654 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), !! 537 KBUILD_CFLAGS += $(call cc-option,-fno-PIE) 655 include $(srctree)/scripts/Makefile.clang !! 538 KBUILD_AFLAGS += $(call cc-option,-fno-PIE) 656 endif << 657 539 658 # Include this also for config targets because !! 540 # The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 659 # cc-cross-prefix to determine CROSS_COMPILE. !! 541 # Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 660 ifdef need-compiler !! 542 # CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 661 include $(srctree)/scripts/Makefile.compiler !! 543 # and from include/config/auto.conf.cmd to detect the compiler upgrade. 662 endif !! 544 CC_VERSION_TEXT = $(shell $(CC) --version | head -n 1) 663 545 664 ifdef config-build !! 546 ifeq ($(config-targets),1) 665 # ============================================ 547 # =========================================================================== 666 # *config targets only - make sure prerequisit 548 # *config targets only - make sure prerequisites are updated, and descend 667 # in scripts/kconfig to make the *config targe 549 # in scripts/kconfig to make the *config target 668 550 669 # Read arch-specific Makefile to set KBUILD_DE !! 551 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 670 # KBUILD_DEFCONFIG may point out an alternativ 552 # KBUILD_DEFCONFIG may point out an alternative default configuration 671 # used for 'make defconfig' 553 # used for 'make defconfig' 672 include $(srctree)/arch/$(SRCARCH)/Makefile !! 554 include arch/$(SRCARCH)/Makefile 673 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS !! 555 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 674 556 675 config: outputmakefile scripts_basic FORCE !! 557 config: scripts_basic outputmakefile FORCE 676 $(Q)$(MAKE) $(build)=scripts/kconfig $ 558 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 677 559 678 %config: outputmakefile scripts_basic FORCE !! 560 %config: scripts_basic outputmakefile FORCE 679 $(Q)$(MAKE) $(build)=scripts/kconfig $ 561 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 680 562 681 else #!config-build !! 563 else 682 # ============================================ 564 # =========================================================================== 683 # Build targets only - this includes vmlinux, !! 565 # Build targets only - this includes vmlinux, arch specific targets, clean 684 # targets and others. In general all targets e 566 # targets and others. In general all targets except *config targets. 685 567 686 # If building an external module we do not car 568 # If building an external module we do not care about the all: rule 687 # but instead __all depend on modules !! 569 # but instead _all depend on modules 688 PHONY += all 570 PHONY += all 689 ifeq ($(KBUILD_EXTMOD),) 571 ifeq ($(KBUILD_EXTMOD),) 690 __all: all !! 572 _all: all 691 else 573 else 692 __all: modules !! 574 _all: modules 693 endif 575 endif 694 576 695 targets := << 696 << 697 # Decide whether to build built-in, modular, o 577 # Decide whether to build built-in, modular, or both. 698 # Normally, just do built-in. 578 # Normally, just do built-in. 699 579 700 KBUILD_MODULES := 580 KBUILD_MODULES := 701 KBUILD_BUILTIN := 1 581 KBUILD_BUILTIN := 1 702 582 703 # If we have only "make modules", don't compil 583 # If we have only "make modules", don't compile built-in objects. 704 ifeq ($(MAKECMDGOALS),modules) 584 ifeq ($(MAKECMDGOALS),modules) 705 KBUILD_BUILTIN := 585 KBUILD_BUILTIN := 706 endif 586 endif 707 587 708 # If we have "make <whatever> modules", compil 588 # If we have "make <whatever> modules", compile modules 709 # in addition to whatever we do anyway. 589 # in addition to whatever we do anyway. 710 # Just "make" or "make all" shall build module 590 # Just "make" or "make all" shall build modules as well 711 591 712 ifneq ($(filter all modules nsdeps %compile_co !! 592 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 713 KBUILD_MODULES := 1 593 KBUILD_MODULES := 1 714 endif 594 endif 715 595 716 ifeq ($(MAKECMDGOALS),) 596 ifeq ($(MAKECMDGOALS),) 717 KBUILD_MODULES := 1 597 KBUILD_MODULES := 1 718 endif 598 endif 719 599 720 export KBUILD_MODULES KBUILD_BUILTIN 600 export KBUILD_MODULES KBUILD_BUILTIN 721 601 722 ifdef need-config << 723 include include/config/auto.conf << 724 endif << 725 << 726 ifeq ($(KBUILD_EXTMOD),) 602 ifeq ($(KBUILD_EXTMOD),) 727 # Objects we will link into vmlinux / subdirs 603 # Objects we will link into vmlinux / subdirs we need to visit 728 core-y := !! 604 init-y := init/ 729 drivers-y := !! 605 drivers-y := drivers/ sound/ firmware/ >> 606 net-y := net/ 730 libs-y := lib/ 607 libs-y := lib/ >> 608 core-y := usr/ >> 609 virt-y := virt/ 731 endif # KBUILD_EXTMOD 610 endif # KBUILD_EXTMOD 732 611 >> 612 ifeq ($(dot-config),1) >> 613 include include/config/auto.conf >> 614 endif >> 615 733 # The all: target is the default when no targe 616 # The all: target is the default when no target is given on the 734 # command line. 617 # command line. 735 # This allow a user to issue only 'make' to bu 618 # This allow a user to issue only 'make' to build a kernel including modules 736 # Defaults to vmlinux, but the arch makefile u 619 # Defaults to vmlinux, but the arch makefile usually adds further targets 737 all: vmlinux 620 all: vmlinux 738 621 739 CFLAGS_GCOV := -fprofile-arcs -ftest-cover !! 622 CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ 740 ifdef CONFIG_CC_IS_GCC !! 623 $(call cc-option,-fno-tree-loop-im) \ 741 CFLAGS_GCOV += -fno-tree-loop-im !! 624 $(call cc-disable-warning,maybe-uninitialized,) 742 endif << 743 export CFLAGS_GCOV 625 export CFLAGS_GCOV 744 626 745 # The arch Makefiles can override CC_FLAGS_FTR 627 # The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. 746 ifdef CONFIG_FUNCTION_TRACER 628 ifdef CONFIG_FUNCTION_TRACER 747 CC_FLAGS_FTRACE := -pg 629 CC_FLAGS_FTRACE := -pg 748 endif 630 endif 749 631 750 include $(srctree)/arch/$(SRCARCH)/Makefile !! 632 # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default >> 633 # values of the respective KBUILD_* variables >> 634 ARCH_CPPFLAGS := >> 635 ARCH_AFLAGS := >> 636 ARCH_CFLAGS := >> 637 include arch/$(SRCARCH)/Makefile 751 638 752 ifdef need-config !! 639 ifeq ($(dot-config),1) 753 ifdef may-sync-config !! 640 ifeq ($(may-sync-config),1) 754 # Read in dependencies to all Kconfig* files, 641 # Read in dependencies to all Kconfig* files, make sure to run syncconfig if 755 # changes are detected. This should be include 642 # changes are detected. This should be included after arch/$(SRCARCH)/Makefile 756 # because some architectures define CROSS_COMP 643 # because some architectures define CROSS_COMPILE there. 757 include include/config/auto.conf.cmd 644 include include/config/auto.conf.cmd 758 645 759 $(KCONFIG_CONFIG): !! 646 # To avoid any implicit rule to kick in, define an empty command 760 @echo >&2 '***' !! 647 $(KCONFIG_CONFIG): ; 761 @echo >&2 '*** Configuration file "$@" << 762 @echo >&2 '***' << 763 @echo >&2 '*** Please run some configu << 764 @echo >&2 '*** "make menuconfig" or "m << 765 @echo >&2 '***' << 766 @/bin/false << 767 648 768 # The actual configuration files used during t 649 # The actual configuration files used during the build are stored in 769 # include/generated/ and include/config/. Upda 650 # include/generated/ and include/config/. Update them if .config is newer than 770 # include/config/auto.conf (which mirrors .con 651 # include/config/auto.conf (which mirrors .config). 771 # 652 # 772 # This exploits the 'multi-target pattern rule 653 # This exploits the 'multi-target pattern rule' trick. 773 # The syncconfig should be executed only once 654 # The syncconfig should be executed only once to make all the targets. 774 # (Note: use the grouped target '&:' when we b !! 655 %/auto.conf %/auto.conf.cmd %/tristate.conf: $(KCONFIG_CONFIG) 775 # << 776 # Do not use $(call cmd,...) here. That would << 777 # so you cannot notice that Kconfig is waiting << 778 %/config/auto.conf %/config/auto.conf.cmd %/ge << 779 $(Q)$(kecho) " SYNC $@" << 780 $(Q)$(MAKE) -f $(srctree)/Makefile syn 656 $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 781 else # !may-sync-config !! 657 else 782 # External modules and some install targets ne 658 # External modules and some install targets need include/generated/autoconf.h 783 # and include/config/auto.conf but do not care 659 # and include/config/auto.conf but do not care if they are up-to-date. 784 # Use auto.conf to trigger the test 660 # Use auto.conf to trigger the test 785 PHONY += include/config/auto.conf 661 PHONY += include/config/auto.conf 786 662 787 include/config/auto.conf: 663 include/config/auto.conf: 788 @test -e include/generated/autoconf.h !! 664 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 789 echo >&2; 665 echo >&2; \ 790 echo >&2 " ERROR: Kernel configuratio 666 echo >&2 " ERROR: Kernel configuration is invalid."; \ 791 echo >&2 " include/generated/a 667 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 792 echo >&2 " Run 'make oldconfig 668 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 793 echo >&2 ; 669 echo >&2 ; \ 794 /bin/false) 670 /bin/false) 795 671 796 endif # may-sync-config 672 endif # may-sync-config 797 endif # need-config !! 673 endif # $(dot-config) 798 674 799 KBUILD_CFLAGS += -fno-delete-null-pointer-ch !! 675 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) >> 676 KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) >> 677 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) >> 678 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) >> 679 KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context) >> 680 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 800 681 801 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE !! 682 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 802 KBUILD_CFLAGS += -O2 !! 683 KBUILD_CFLAGS += -Os 803 KBUILD_RUSTFLAGS += -Copt-level=2 !! 684 else 804 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE !! 685 KBUILD_CFLAGS += -O2 805 KBUILD_CFLAGS += -Os !! 686 endif 806 KBUILD_RUSTFLAGS += -Copt-level=s << 807 endif << 808 << 809 # Always set `debug-assertions` and `overflow- << 810 # depends on `opt-level` and `debug-assertions << 811 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( << 812 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C << 813 687 814 # Tell gcc to never replace conditional load w 688 # Tell gcc to never replace conditional load with a non-conditional one 815 ifdef CONFIG_CC_IS_GCC << 816 # gcc-10 renamed --param=allow-store-data-race << 817 # -fno-allow-store-data-races. << 818 KBUILD_CFLAGS += $(call cc-option,--param=al 689 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 819 KBUILD_CFLAGS += $(call cc-option,-fno-allow 690 KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) 820 endif !! 691 >> 692 include scripts/Makefile.kcov >> 693 include scripts/Makefile.gcc-plugins 821 694 822 ifdef CONFIG_READABLE_ASM 695 ifdef CONFIG_READABLE_ASM 823 # Disable optimizations that make assembler li 696 # Disable optimizations that make assembler listings hard to read. 824 # reorder blocks reorders the control in the f 697 # reorder blocks reorders the control in the function 825 # ipa clone creates specialized cloned functio 698 # ipa clone creates specialized cloned functions 826 # partial inlining inlines only parts of funct 699 # partial inlining inlines only parts of functions 827 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- !! 700 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ >> 701 $(call cc-option,-fno-ipa-cp-clone,) \ >> 702 $(call cc-option,-fno-partial-inlining) 828 endif 703 endif 829 704 830 stackp-flags-y !! 705 ifneq ($(CONFIG_FRAME_WARN),0) >> 706 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) >> 707 endif >> 708 >> 709 stackp-flags-$(CONFIG_CC_HAS_STACKPROTECTOR_NONE) := -fno-stack-protector 831 stackp-flags-$(CONFIG_STACKPROTECTOR) 710 stackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector 832 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) 711 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong 833 712 834 KBUILD_CFLAGS += $(stackp-flags-y) 713 KBUILD_CFLAGS += $(stackp-flags-y) 835 714 836 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning !! 715 ifeq ($(cc-name),clang) 837 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) !! 716 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) >> 717 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) >> 718 KBUILD_CFLAGS += $(call cc-disable-warning, gnu) >> 719 # Quiet clang warning: comparison of unsigned expression < 0 is always false >> 720 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) >> 721 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the >> 722 # source of a reference will be _MergedGlobals and not on of the whitelisted names. >> 723 # See modpost pattern 2 >> 724 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) >> 725 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) >> 726 endif >> 727 >> 728 # These warnings generated too much noise in a regular build. >> 729 # Use make W=1 to enable them (see scripts/Makefile.extrawarn) >> 730 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) >> 731 >> 732 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) >> 733 >> 734 # These result in bogus false positives >> 735 KBUILD_CFLAGS += $(call cc-disable-warning, dangling-pointer) 838 736 839 ifdef CONFIG_FRAME_POINTER 737 ifdef CONFIG_FRAME_POINTER 840 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 738 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 841 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y << 842 else 739 else 843 # Some targets (ARM with Thumb2, for example), 740 # Some targets (ARM with Thumb2, for example), can't be built with frame 844 # pointers. For those, we don't have FUNCTION 741 # pointers. For those, we don't have FUNCTION_TRACER automatically 845 # select FRAME_POINTER. However, FUNCTION_TRA 742 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 846 # incompatible with -fomit-frame-pointer with 743 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 847 # -fomit-frame-pointer with FUNCTION_TRACER. 744 # -fomit-frame-pointer with FUNCTION_TRACER. 848 # In the Rust target specification, "frame-poi << 849 # to "may-omit". << 850 ifndef CONFIG_FUNCTION_TRACER 745 ifndef CONFIG_FUNCTION_TRACER 851 KBUILD_CFLAGS += -fomit-frame-pointer 746 KBUILD_CFLAGS += -fomit-frame-pointer 852 endif 747 endif 853 endif 748 endif 854 749 855 # Initialize all stack variables with a 0xAA p !! 750 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) 856 ifdef CONFIG_INIT_STACK_ALL_PATTERN << 857 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat << 858 endif << 859 751 860 # Initialize all stack variables with a zero v !! 752 ifdef CONFIG_DEBUG_INFO 861 ifdef CONFIG_INIT_STACK_ALL_ZERO !! 753 ifdef CONFIG_DEBUG_INFO_SPLIT 862 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer !! 754 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) 863 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER !! 755 else 864 # https://github.com/llvm/llvm-project/issues/ !! 756 KBUILD_CFLAGS += -g 865 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi !! 757 endif 866 export CC_AUTO_VAR_INIT_ZERO_ENABLER !! 758 ifeq ($(LLVM_IAS),1) 867 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA !! 759 KBUILD_AFLAGS += -g >> 760 else >> 761 KBUILD_AFLAGS += -Wa,-gdwarf-2 868 endif 762 endif 869 endif 763 endif 870 764 871 # While VLAs have been removed, GCC produces u !! 765 ifdef CONFIG_DEBUG_INFO_DWARF4 872 # for the randomize_kstack_offset feature. Dis !! 766 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) 873 KBUILD_CFLAGS += $(call cc-option, -fno-stac !! 767 endif 874 768 875 # Clear used registers at func exit (to reduce !! 769 ifdef CONFIG_DEBUG_INFO_REDUCED 876 ifdef CONFIG_ZERO_CALL_USED_REGS !! 770 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 877 KBUILD_CFLAGS += -fzero-call-used-regs=used- !! 771 $(call cc-option,-fno-var-tracking) 878 endif 772 endif 879 773 880 ifdef CONFIG_FUNCTION_TRACER 774 ifdef CONFIG_FUNCTION_TRACER 881 ifdef CONFIG_FTRACE_MCOUNT_USE_CC !! 775 ifdef CONFIG_FTRACE_MCOUNT_RECORD 882 CC_FLAGS_FTRACE += -mrecord-mcount !! 776 # gcc 5 supports generating the mcount tables directly >> 777 ifeq ($(call cc-option-yn,-mrecord-mcount),y) >> 778 CC_FLAGS_FTRACE += -mrecord-mcount >> 779 export CC_USING_RECORD_MCOUNT := 1 >> 780 endif 883 ifdef CONFIG_HAVE_NOP_MCOUNT 781 ifdef CONFIG_HAVE_NOP_MCOUNT 884 ifeq ($(call cc-option-yn, -mnop-mcount),y 782 ifeq ($(call cc-option-yn, -mnop-mcount),y) 885 CC_FLAGS_FTRACE += -mnop-mcount 783 CC_FLAGS_FTRACE += -mnop-mcount 886 CC_FLAGS_USING += -DCC_USING_NOP_MCOU 784 CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 887 endif 785 endif 888 endif 786 endif 889 endif 787 endif 890 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL << 891 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT << 892 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 893 endif << 894 endif << 895 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT << 896 ifdef CONFIG_HAVE_C_RECORDMCOUNT << 897 BUILD_C_RECORDMCOUNT := y << 898 export BUILD_C_RECORDMCOUNT << 899 endif << 900 endif << 901 ifdef CONFIG_HAVE_FENTRY 788 ifdef CONFIG_HAVE_FENTRY 902 # s390-linux-gnu-gcc did not support -mfentr << 903 ifeq ($(call cc-option-yn, -mfentry),y) 789 ifeq ($(call cc-option-yn, -mfentry),y) 904 CC_FLAGS_FTRACE += -mfentry 790 CC_FLAGS_FTRACE += -mfentry 905 CC_FLAGS_USING += -DCC_USING_FENTRY 791 CC_FLAGS_USING += -DCC_USING_FENTRY 906 endif 792 endif 907 endif 793 endif 908 export CC_FLAGS_FTRACE 794 export CC_FLAGS_FTRACE 909 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA 795 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 910 KBUILD_AFLAGS += $(CC_FLAGS_USING) 796 KBUILD_AFLAGS += $(CC_FLAGS_USING) >> 797 ifdef CONFIG_DYNAMIC_FTRACE >> 798 ifdef CONFIG_HAVE_C_RECORDMCOUNT >> 799 BUILD_C_RECORDMCOUNT := y >> 800 export BUILD_C_RECORDMCOUNT >> 801 endif >> 802 endif 911 endif 803 endif 912 804 913 # We trigger additional mismatches with less i 805 # We trigger additional mismatches with less inlining 914 ifdef CONFIG_DEBUG_SECTION_MISMATCH 806 ifdef CONFIG_DEBUG_SECTION_MISMATCH 915 KBUILD_CFLAGS += -fno-inline-functions-called- !! 807 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 916 endif 808 endif 917 809 918 # `rustc`'s `-Zfunction-sections` applies to d << 919 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 810 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 920 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f 811 KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 921 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections << 922 LDFLAGS_vmlinux += --gc-sections 812 LDFLAGS_vmlinux += --gc-sections 923 endif 813 endif 924 814 925 ifdef CONFIG_SHADOW_CALL_STACK !! 815 # arch Makefile may override CC so keep this after arch Makefile is included 926 ifndef CONFIG_DYNAMIC_SCS !! 816 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 927 CC_FLAGS_SCS := -fsanitize=shadow-call-stac << 928 KBUILD_CFLAGS += $(CC_FLAGS_SCS) << 929 KBUILD_RUSTFLAGS += -Zsanitizer=shadow-call-st << 930 endif << 931 export CC_FLAGS_SCS << 932 endif << 933 << 934 ifdef CONFIG_LTO_CLANG << 935 ifdef CONFIG_LTO_CLANG_THIN << 936 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit << 937 else << 938 CC_FLAGS_LTO := -flto << 939 endif << 940 CC_FLAGS_LTO += -fvisibility=hidden << 941 817 942 # Limit inlining across translation units to r !! 818 # warn about C99 declaration after statement 943 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 !! 819 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 944 endif << 945 820 946 ifdef CONFIG_LTO !! 821 # disable pointer signed / unsigned warnings in gcc 4.0 947 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) !! 822 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 948 KBUILD_AFLAGS += -fno-lto << 949 export CC_FLAGS_LTO << 950 endif << 951 823 952 ifdef CONFIG_CFI_CLANG !! 824 # disable stringop warnings in gcc 8+ 953 CC_FLAGS_CFI := -fsanitize=kcfi !! 825 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 954 ifdef CONFIG_CFI_ICALL_NORMALIZE_INTEGERS << 955 CC_FLAGS_CFI += -fsanitize-cfi-ical << 956 endif << 957 ifdef CONFIG_RUST << 958 # Always pass -Zsanitizer-cfi-normaliz << 959 # CONFIG_CFI_ICALL_NORMALIZE_INTEGERS. << 960 RUSTC_FLAGS_CFI := -Zsanitizer=kcfi << 961 KBUILD_RUSTFLAGS += $(RUSTC_FLAGS_CFI) << 962 export RUSTC_FLAGS_CFI << 963 endif << 964 KBUILD_CFLAGS += $(CC_FLAGS_CFI) << 965 export CC_FLAGS_CFI << 966 endif << 967 826 968 # Architectures can define flags to add/remove !! 827 # We'll want to enable this eventually, but it's not going away for 5.7 at least 969 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN !! 828 KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) 970 export CC_FLAGS_FPU !! 829 KBUILD_CFLAGS += $(call cc-disable-warning, array-bounds) 971 export CC_FLAGS_NO_FPU !! 830 KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) 972 831 973 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) !! 832 # Another good warning that we'll want to enable eventually 974 # Set the minimal function alignment. Use the !! 833 KBUILD_CFLAGS += $(call cc-disable-warning, restrict) 975 # -fmin-function-alignment if it is available, << 976 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME << 977 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT << 978 KBUILD_CFLAGS += -fmin-function-alignment=$(CO << 979 else << 980 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU << 981 endif << 982 endif << 983 834 984 # arch Makefile may override CC so keep this a !! 835 # Enabled with W=2, disabled by default as noisy 985 NOSTDINC_FLAGS += -nostdinc !! 836 KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized) 986 << 987 # To gain proper coverage for CONFIG_UBSAN_BOU << 988 # the kernel uses only C99 flexible arrays for << 989 # arrays. Enforce this for everything that may << 990 # perform bounds checking. << 991 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl << 992 << 993 #Currently, disable -Wstringop-overflow for GC << 994 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW << 995 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + << 996 837 997 # disable invalid "can't wrap" optimizations f 838 # disable invalid "can't wrap" optimizations for signed / pointers 998 KBUILD_CFLAGS += -fno-strict-overflow !! 839 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) >> 840 >> 841 # clang sets -fmerge-all-constants by default as optimization, but this >> 842 # is non-conforming behavior for C and in fact breaks the kernel, so we >> 843 # need to disable it here generally. >> 844 KBUILD_CFLAGS += $(call cc-option,-fno-merge-all-constants) >> 845 >> 846 # for gcc -fno-merge-all-constants disables everything, but it is fine >> 847 # to have actual conforming behavior enabled. >> 848 KBUILD_CFLAGS += $(call cc-option,-fmerge-constants) 999 849 1000 # Make sure -fstack-check isn't enabled (like 850 # Make sure -fstack-check isn't enabled (like gentoo apparently did) 1001 KBUILD_CFLAGS += -fno-stack-check !! 851 KBUILD_CFLAGS += $(call cc-option,-fno-stack-check,) 1002 852 1003 # conserve stack if available 853 # conserve stack if available 1004 ifdef CONFIG_CC_IS_GCC !! 854 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 1005 KBUILD_CFLAGS += -fconserve-stack !! 855 1006 endif !! 856 # disallow errors like 'EXPORT_GPL(foo);' with missing header >> 857 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) >> 858 >> 859 # require functions to have arguments in prototypes, not empty 'int foo()' >> 860 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) >> 861 >> 862 # Prohibit date/time macros, which would make the build non-deterministic >> 863 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) >> 864 >> 865 # enforce correct pointer usage >> 866 KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) >> 867 >> 868 # Require designated initializers for all marked structures >> 869 KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 1007 870 1008 # change __FILE__ to the relative path from t 871 # change __FILE__ to the relative path from the srctree 1009 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p !! 872 KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 1010 873 1011 # include additional Makefiles when needed !! 874 # use the deterministic mode of AR if available 1012 include-y := scripts/Ma !! 875 KBUILD_ARFLAGS := $(call ar-option,D) 1013 include-$(CONFIG_DEBUG_INFO) += scripts/Ma << 1014 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma << 1015 include-$(CONFIG_KASAN) += scripts/Ma << 1016 include-$(CONFIG_KCSAN) += scripts/Ma << 1017 include-$(CONFIG_KMSAN) += scripts/Ma << 1018 include-$(CONFIG_UBSAN) += scripts/Ma << 1019 include-$(CONFIG_KCOV) += scripts/Ma << 1020 include-$(CONFIG_RANDSTRUCT) += scripts/Ma << 1021 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma << 1022 << 1023 include $(addprefix $(srctree)/, $(include-y) << 1024 << 1025 # scripts/Makefile.gcc-plugins is intentional << 1026 # Do not add $(call cc-option,...) below this << 1027 # from the clean source tree, the GCC plugins << 1028 << 1029 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS << 1030 KBUILD_CPPFLAGS += $(KCPPFLAGS) << 1031 KBUILD_AFLAGS += $(KAFLAGS) << 1032 KBUILD_CFLAGS += $(KCFLAGS) << 1033 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) << 1034 876 1035 KBUILD_LDFLAGS_MODULE += --build-id=sha1 !! 877 include scripts/Makefile.kasan 1036 LDFLAGS_vmlinux += --build-id=sha1 !! 878 include scripts/Makefile.extrawarn >> 879 include scripts/Makefile.ubsan >> 880 >> 881 # Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the >> 882 # last assignments >> 883 KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) >> 884 KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) >> 885 KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) >> 886 >> 887 # Use --build-id when available. >> 888 LDFLAGS_BUILD_ID := $(call ld-option, --build-id) >> 889 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) >> 890 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 1037 891 1038 KBUILD_LDFLAGS += -z noexecstack 892 KBUILD_LDFLAGS += -z noexecstack 1039 ifeq ($(CONFIG_LD_IS_BFD),y) << 1040 KBUILD_LDFLAGS += $(call ld-option,--no-warn 893 KBUILD_LDFLAGS += $(call ld-option,--no-warn-rwx-segments) 1041 endif << 1042 894 1043 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 895 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1044 LDFLAGS_vmlinux += -X !! 896 LDFLAGS_vmlinux += $(call ld-option, -X,) 1045 endif << 1046 << 1047 ifeq ($(CONFIG_RELR),y) << 1048 # ld.lld before 15 did not support -z pack-re << 1049 LDFLAGS_vmlinux += $(call ld-option,--pack-dy << 1050 endif << 1051 << 1052 # We never want expected sections to be place << 1053 # linker. All sections should be explicitly n << 1054 ifdef CONFIG_LD_ORPHAN_WARN << 1055 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG << 1056 endif 897 endif 1057 898 1058 # Align the bit size of userspace programs wi << 1059 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta << 1060 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta << 1061 << 1062 # make the checker run with the right archite << 1063 CHECKFLAGS += --arch=$(ARCH) << 1064 << 1065 # insure the checker run with the right endia 899 # insure the checker run with the right endianness 1066 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- 900 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 1067 901 1068 # the checker needs the correct machine size 902 # the checker needs the correct machine size 1069 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 903 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 1070 904 1071 # Default kernel image to build when no speci 905 # Default kernel image to build when no specific target is given. 1072 # KBUILD_IMAGE may be overruled on the comman 906 # KBUILD_IMAGE may be overruled on the command line or 1073 # set in the environment 907 # set in the environment 1074 # Also any assignments in arch/$(ARCH)/Makefi 908 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 1075 # this default value 909 # this default value 1076 export KBUILD_IMAGE ?= vmlinux 910 export KBUILD_IMAGE ?= vmlinux 1077 911 1078 # 912 # 1079 # INSTALL_PATH specifies where to place the u 913 # INSTALL_PATH specifies where to place the updated kernel and system map 1080 # images. Default is /boot, but you can set i 914 # images. Default is /boot, but you can set it to other values 1081 export INSTALL_PATH ?= /boot 915 export INSTALL_PATH ?= /boot 1082 916 1083 # 917 # 1084 # INSTALL_DTBS_PATH specifies a prefix for re 918 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1085 # Like INSTALL_MOD_PATH, it isn't defined in 919 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1086 # an argument if needed. Otherwise it default 920 # an argument if needed. Otherwise it defaults to the kernel install path 1087 # 921 # 1088 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d 922 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1089 923 1090 # 924 # 1091 # INSTALL_MOD_PATH specifies a prefix to MODL 925 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1092 # relocations required by build roots. This 926 # relocations required by build roots. This is not defined in the 1093 # makefile but the argument can be passed to 927 # makefile but the argument can be passed to make if needed. 1094 # 928 # 1095 929 1096 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 930 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1097 export MODLIB 931 export MODLIB 1098 932 1099 PHONY += prepare0 !! 933 # >> 934 # INSTALL_MOD_STRIP, if defined, will cause modules to be >> 935 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then >> 936 # the default option --strip-debug will be used. Otherwise, >> 937 # INSTALL_MOD_STRIP value will be used as the options to the strip command. >> 938 >> 939 ifdef INSTALL_MOD_STRIP >> 940 ifeq ($(INSTALL_MOD_STRIP),1) >> 941 mod_strip_cmd = $(STRIP) --strip-debug >> 942 else >> 943 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) >> 944 endif # INSTALL_MOD_STRIP=1 >> 945 else >> 946 mod_strip_cmd = true >> 947 endif # INSTALL_MOD_STRIP >> 948 export mod_strip_cmd >> 949 >> 950 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed >> 951 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP >> 952 # or CONFIG_MODULE_COMPRESS_XZ. >> 953 >> 954 mod_compress_cmd = true >> 955 ifdef CONFIG_MODULE_COMPRESS >> 956 ifdef CONFIG_MODULE_COMPRESS_GZIP >> 957 mod_compress_cmd = gzip -n -f >> 958 endif # CONFIG_MODULE_COMPRESS_GZIP >> 959 ifdef CONFIG_MODULE_COMPRESS_XZ >> 960 mod_compress_cmd = xz -f >> 961 endif # CONFIG_MODULE_COMPRESS_XZ >> 962 endif # CONFIG_MODULE_COMPRESS >> 963 export mod_compress_cmd >> 964 >> 965 # Select initial ramdisk compression format, default is gzip(1). >> 966 # This shall be used by the dracut(8) tool while creating an initramfs image. >> 967 # >> 968 INITRD_COMPRESS-y := gzip >> 969 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 >> 970 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma >> 971 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz >> 972 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo >> 973 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 >> 974 # do not export INITRD_COMPRESS, since we didn't actually >> 975 # choose a sane default compression above. >> 976 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) 1100 977 1101 export extmod_prefix = $(if $(KBUILD_EXTMOD), !! 978 ifdef CONFIG_MODULE_SIG_ALL 1102 export MODORDER := $(extmod_prefix)modules.or !! 979 $(eval $(call config_filename,MODULE_SIG_KEY)) 1103 export MODULES_NSDEPS := $(extmod_prefix)modu << 1104 980 1105 ifeq ($(KBUILD_EXTMOD),) !! 981 mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 >> 982 else >> 983 mod_sign_cmd = true >> 984 endif >> 985 export mod_sign_cmd 1106 986 1107 build-dir := . !! 987 HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf) 1108 clean-dirs := $(sort . Documentation \ << 1109 $(patsubst %/,%,$(filter << 1110 $(drivers-) $(libs-)) << 1111 << 1112 export ARCH_CORE := $(core-y) << 1113 export ARCH_LIB := $(filter %/, $(lib << 1114 export ARCH_DRIVERS := $(drivers-y) $(dri << 1115 # Externally visible symbols (used by link-vm << 1116 988 1117 KBUILD_VMLINUX_OBJS := ./built-in.a !! 989 ifdef CONFIG_STACK_VALIDATION 1118 ifdef CONFIG_MODULES !! 990 has_libelf := $(call try-run,\ 1119 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a !! 991 echo "int main() {}" | $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0) 1120 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib !! 992 ifeq ($(has_libelf),1) 1121 else !! 993 objtool_target := tools/objtool FORCE 1122 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, !! 994 else >> 995 SKIP_STACK_VALIDATION := 1 >> 996 export SKIP_STACK_VALIDATION >> 997 endif 1123 endif 998 endif 1124 999 1125 export KBUILD_VMLINUX_LIBS !! 1000 PHONY += prepare0 1126 export KBUILD_LDS := arch/$(SRCARCH) !! 1001 >> 1002 ifeq ($(KBUILD_EXTMOD),) >> 1003 core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ >> 1004 >> 1005 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ >> 1006 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ >> 1007 $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) >> 1008 >> 1009 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ >> 1010 $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-)))) >> 1011 >> 1012 init-y := $(patsubst %/, %/built-in.a, $(init-y)) >> 1013 core-y := $(patsubst %/, %/built-in.a, $(core-y)) >> 1014 drivers-y := $(patsubst %/, %/built-in.a, $(drivers-y)) >> 1015 net-y := $(patsubst %/, %/built-in.a, $(net-y)) >> 1016 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) >> 1017 libs-y2 := $(patsubst %/, %/built-in.a, $(filter-out %.a, $(libs-y))) >> 1018 virt-y := $(patsubst %/, %/built-in.a, $(virt-y)) 1127 1019 >> 1020 # Externally visible symbols (used by link-vmlinux.sh) >> 1021 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) >> 1022 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y2) $(drivers-y) $(net-y) $(virt-y) >> 1023 export KBUILD_VMLINUX_LIBS := $(libs-y1) >> 1024 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds >> 1025 export LDFLAGS_vmlinux >> 1026 # used by scripts/package/Makefile >> 1027 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools) >> 1028 >> 1029 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) $(KBUILD_VMLINUX_LIBS) >> 1030 >> 1031 # Recurse until adjust_autoksyms.sh is satisfied >> 1032 PHONY += autoksyms_recursive >> 1033 autoksyms_recursive: $(vmlinux-deps) 1128 ifdef CONFIG_TRIM_UNUSED_KSYMS 1034 ifdef CONFIG_TRIM_UNUSED_KSYMS >> 1035 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ >> 1036 "$(MAKE) -f $(srctree)/Makefile autoksyms_recursive" >> 1037 endif >> 1038 1129 # For the kernel to actually contain only the 1039 # For the kernel to actually contain only the needed exported symbols, 1130 # we have to build modules as well to determi 1040 # we have to build modules as well to determine what those symbols are. 1131 KBUILD_MODULES := 1 !! 1041 # (this can be evaluated only once include/config/auto.conf has been included) >> 1042 ifdef CONFIG_TRIM_UNUSED_KSYMS >> 1043 KBUILD_MODULES := 1 1132 endif 1044 endif 1133 1045 1134 # '$(AR) mPi' needs 'T' to workaround the bug !! 1046 autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) 1135 quiet_cmd_ar_vmlinux.a = AR $@ << 1136 cmd_ar_vmlinux.a = \ << 1137 rm -f $@; \ << 1138 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS << 1139 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) << 1140 << 1141 targets += vmlinux.a << 1142 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea << 1143 $(call if_changed,ar_vmlinux.a) << 1144 << 1145 PHONY += vmlinux_o << 1146 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) << 1147 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1148 1047 1149 vmlinux.o modules.builtin.modinfo modules.bui !! 1048 $(autoksyms_h): 1150 @: !! 1049 $(Q)mkdir -p $(dir $@) >> 1050 $(Q)touch $@ >> 1051 >> 1052 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) >> 1053 >> 1054 # Final link of vmlinux with optional arch pass after final link >> 1055 cmd_link-vmlinux = \ >> 1056 $(CONFIG_SHELL) $< $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_vmlinux) ; \ >> 1057 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) >> 1058 >> 1059 vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE >> 1060 ifdef CONFIG_HEADERS_CHECK >> 1061 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check >> 1062 endif >> 1063 ifdef CONFIG_GDB_SCRIPTS >> 1064 $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) >> 1065 endif >> 1066 +$(call if_changed,link-vmlinux) 1151 1067 1152 PHONY += vmlinux !! 1068 # Build samples along the rest of the kernel. This needs headers_install. 1153 # LDFLAGS_vmlinux in the top Makefile defines !! 1069 ifdef CONFIG_SAMPLES 1154 # not for decompressors. LDFLAGS_vmlinux in a !! 1070 vmlinux-dirs += samples 1155 # unrelated; the decompressors just happen to !! 1071 samples: headers_install 1156 # arch/*/boot/compressed/vmlinux. !! 1072 endif 1157 # Export LDFLAGS_vmlinux only to scripts/Make << 1158 # << 1159 # _LDFLAGS_vmlinux is a workaround for the 'p << 1160 # https://savannah.gnu.org/bugs/?61463 << 1161 # For Make > 4.4, the following simple code w << 1162 # vmlinux: private export LDFLAGS_vmlinux := << 1163 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG << 1164 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ << 1165 vmlinux: vmlinux.o $(KBUILD_LDS) modpost << 1166 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1167 1073 1168 # The actual objects are generated when desce 1074 # The actual objects are generated when descending, 1169 # make sure no implicit rule kicks in 1075 # make sure no implicit rule kicks in 1170 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 1076 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 1171 1077 1172 ifeq ($(origin KERNELRELEASE),file) !! 1078 # Handle descending into subdirectories listed in $(vmlinux-dirs) 1173 filechk_kernel.release = $(srctree)/scripts/s !! 1079 # Preset locale variables to speed up the build process. Limit locale 1174 else !! 1080 # tweaks to this spot to avoid wrong language settings when running 1175 filechk_kernel.release = echo $(KERNELRELEASE !! 1081 # make menuconfig etc. 1176 endif !! 1082 # Error messages still appears in the original language >> 1083 >> 1084 PHONY += $(vmlinux-dirs) >> 1085 $(vmlinux-dirs): prepare scripts >> 1086 $(Q)$(MAKE) $(build)=$@ need-builtin=1 >> 1087 >> 1088 define filechk_kernel.release >> 1089 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" >> 1090 endef 1177 1091 1178 # Store (new) KERNELRELEASE string in include 1092 # Store (new) KERNELRELEASE string in include/config/kernel.release 1179 include/config/kernel.release: FORCE !! 1093 include/config/kernel.release: $(srctree)/Makefile FORCE 1180 $(call filechk,kernel.release) 1094 $(call filechk,kernel.release) 1181 1095 1182 # Additional helpers built in scripts/ 1096 # Additional helpers built in scripts/ 1183 # Carefully list dependencies so we do not tr 1097 # Carefully list dependencies so we do not try to build scripts twice 1184 # in parallel 1098 # in parallel 1185 PHONY += scripts 1099 PHONY += scripts 1186 scripts: scripts_basic scripts_dtc !! 1100 scripts: scripts_basic asm-generic gcc-plugins $(autoksyms_h) 1187 $(Q)$(MAKE) $(build)=$(@) 1101 $(Q)$(MAKE) $(build)=$(@) 1188 1102 1189 # Things we need to do before we recursively 1103 # Things we need to do before we recursively start building the kernel 1190 # or the modules are listed in "prepare". 1104 # or the modules are listed in "prepare". 1191 # A multi level approach is used. prepareN is 1105 # A multi level approach is used. prepareN is processed before prepareN-1. 1192 # archprepare is used in arch Makefiles and w 1106 # archprepare is used in arch Makefiles and when processed asm symlink, 1193 # version.h and scripts_basic is processed / 1107 # version.h and scripts_basic is processed / created. 1194 1108 1195 PHONY += prepare archprepare !! 1109 PHONY += prepare archprepare prepare1 prepare2 prepare3 1196 1110 1197 archprepare: outputmakefile archheaders archs !! 1111 # prepare3 is used to check if we are building in a separate output directory, 1198 asm-generic $(version_h) include/gene !! 1112 # and if so do: 1199 include/generated/compile.h include/g !! 1113 # 1) Check that make has not been executed in the kernel src $(srctree) 1200 !! 1114 prepare3: include/config/kernel.release 1201 prepare0: archprepare !! 1115 ifneq ($(KBUILD_SRC),) 1202 $(Q)$(MAKE) $(build)=scripts/mod !! 1116 @$(kecho) ' Using $(srctree) as source for kernel' 1203 $(Q)$(MAKE) $(build)=. prepare !! 1117 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ >> 1118 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ >> 1119 echo >&2 " in the '$(srctree)' directory.";\ >> 1120 /bin/false; \ >> 1121 fi; >> 1122 endif >> 1123 >> 1124 # prepare2 creates a makefile if using a separate output directory. >> 1125 # From this point forward, .config has been reprocessed, so any rules >> 1126 # that need to depend on updated CONFIG_* values can be checked here. >> 1127 prepare2: prepare3 outputmakefile asm-generic 1204 1128 1205 # All the preparing.. !! 1129 prepare1: prepare2 $(version_h) $(autoksyms_h) include/generated/utsrelease.h 1206 prepare: prepare0 !! 1130 $(cmd_crmodverdir) 1207 ifdef CONFIG_RUST << 1208 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1209 $(Q)$(MAKE) $(build)=rust << 1210 endif << 1211 1131 1212 PHONY += remove-stale-files !! 1132 archprepare: archheaders archscripts prepare1 scripts_basic 1213 remove-stale-files: << 1214 $(Q)$(srctree)/scripts/remove-stale-f << 1215 1133 1216 # Support for using generic headers in asm-ge !! 1134 prepare0: archprepare gcc-plugins 1217 asm-generic := -f $(srctree)/scripts/Makefile !! 1135 $(Q)$(MAKE) $(build)=. 1218 1136 >> 1137 # All the preparing.. >> 1138 prepare: prepare0 prepare-objtool >> 1139 >> 1140 # Support for using generic headers in asm-generic 1219 PHONY += asm-generic uapi-asm-generic 1141 PHONY += asm-generic uapi-asm-generic 1220 asm-generic: uapi-asm-generic 1142 asm-generic: uapi-asm-generic 1221 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC !! 1143 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 1222 generic=include/asm-generic !! 1144 src=asm obj=arch/$(SRCARCH)/include/generated/asm 1223 uapi-asm-generic: 1145 uapi-asm-generic: 1224 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC !! 1146 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 1225 generic=include/uapi/asm-generic !! 1147 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm >> 1148 >> 1149 PHONY += prepare-objtool >> 1150 prepare-objtool: $(objtool_target) >> 1151 ifeq ($(SKIP_STACK_VALIDATION),1) >> 1152 ifdef CONFIG_UNWINDER_ORC >> 1153 @echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1154 @false >> 1155 else >> 1156 @echo "warning: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 >> 1157 endif >> 1158 endif 1226 1159 1227 # Generate some files 1160 # Generate some files 1228 # ------------------------------------------- 1161 # --------------------------------------------------------------------------- 1229 1162 1230 # KERNELRELEASE can change from a few differe 1163 # KERNELRELEASE can change from a few different places, meaning version.h 1231 # needs to be updated, so this check is force 1164 # needs to be updated, so this check is forced on all builds 1232 1165 1233 uts_len := 64 1166 uts_len := 64 1234 define filechk_utsrelease.h 1167 define filechk_utsrelease.h 1235 if [ `echo -n "$(KERNELRELEASE)" | wc 1168 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1236 echo '"$(KERNELRELEASE)" exceeds $( 1169 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1237 exit 1; 1170 exit 1; \ 1238 fi; 1171 fi; \ 1239 echo \#define UTS_RELEASE \"$(KERNELR !! 1172 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1240 endef 1173 endef 1241 1174 1242 define filechk_version.h 1175 define filechk_version.h 1243 if [ $(SUBLEVEL) -gt 255 ]; then !! 1176 (echo \#define LINUX_VERSION_CODE $(shell \ 1244 echo \#define LINUX_VERSION_C !! 1177 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 255); \ 1245 expr $(VERSION) \* 65536 + $( !! 1178 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1246 else << 1247 echo \#define LINUX_VERSION_C << 1248 expr $(VERSION) \* 65536 + $( << 1249 fi; << 1250 echo '#define KERNEL_VERSION(a,b,c) ( << 1251 ((c) > 255 ? 255 : (c)))'; << 1252 echo \#define LINUX_VERSION_MAJOR $(V << 1253 echo \#define LINUX_VERSION_PATCHLEVE << 1254 echo \#define LINUX_VERSION_SUBLEVEL << 1255 endef 1179 endef 1256 1180 1257 $(version_h): private PATCHLEVEL := $(or $(PA << 1258 $(version_h): private SUBLEVEL := $(or $(SUBL << 1259 $(version_h): FORCE 1181 $(version_h): FORCE 1260 $(call filechk,version.h) 1182 $(call filechk,version.h) >> 1183 $(Q)rm -f $(old_version_h) 1261 1184 1262 include/generated/utsrelease.h: include/confi 1185 include/generated/utsrelease.h: include/config/kernel.release FORCE 1263 $(call filechk,utsrelease.h) 1186 $(call filechk,utsrelease.h) 1264 1187 1265 filechk_compile.h = $(srctree)/scripts/mkcomp << 1266 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION << 1267 << 1268 include/generated/compile.h: FORCE << 1269 $(call filechk,compile.h) << 1270 << 1271 PHONY += headerdep 1188 PHONY += headerdep 1272 headerdep: 1189 headerdep: 1273 $(Q)find $(srctree)/include/ -name '* 1190 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1274 $(srctree)/scripts/headerdep.pl -I$(s 1191 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1275 1192 1276 # ------------------------------------------- 1193 # --------------------------------------------------------------------------- 1277 # Kernel headers 1194 # Kernel headers 1278 1195 1279 #Default location for installed headers 1196 #Default location for installed headers 1280 export INSTALL_HDR_PATH = $(objtree)/usr 1197 export INSTALL_HDR_PATH = $(objtree)/usr 1281 1198 1282 quiet_cmd_headers_install = INSTALL $(INSTALL !! 1199 # If we do an all arch process set dst to include/arch-$(SRCARCH) 1283 cmd_headers_install = \ !! 1200 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/arch-$(SRCARCH), dst=include) 1284 mkdir -p $(INSTALL_HDR_PATH); \ << 1285 rsync -mrl --include='*/' --include=' << 1286 usr/include $(INSTALL_HDR_PATH) << 1287 << 1288 PHONY += headers_install << 1289 headers_install: headers << 1290 $(call cmd,headers_install) << 1291 << 1292 PHONY += archheaders archscripts << 1293 1201 1294 hdr-inst := -f $(srctree)/scripts/Makefile.he !! 1202 PHONY += archheaders >> 1203 archheaders: 1295 1204 1296 PHONY += headers !! 1205 PHONY += archscripts 1297 headers: $(version_h) scripts_unifdef uapi-as !! 1206 archscripts: 1298 $(if $(filter um, $(SRCARCH)), $(erro << 1299 $(Q)$(MAKE) $(hdr-inst)=include/uapi << 1300 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC << 1301 << 1302 ifdef CONFIG_HEADERS_INSTALL << 1303 prepare: headers << 1304 endif << 1305 << 1306 PHONY += scripts_unifdef << 1307 scripts_unifdef: scripts_basic << 1308 $(Q)$(MAKE) $(build)=scripts scripts/ << 1309 << 1310 # ------------------------------------------- << 1311 # Install << 1312 1207 1313 # Many distributions have the custom install !! 1208 PHONY += __headers 1314 # If DKMS is installed, 'make install' will e !! 1209 __headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts 1315 # to this Makefile to build and install exter !! 1210 $(Q)$(MAKE) $(build)=scripts build_unifdef 1316 # Cancel sub_make_done so that options such a !! 1211 >> 1212 PHONY += headers_install_all >> 1213 headers_install_all: >> 1214 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1317 1215 1318 quiet_cmd_install = INSTALL $(INSTALL_PATH) !! 1216 PHONY += headers_install 1319 cmd_install = unset sub_make_done; $(sr !! 1217 headers_install: __headers 1320 !! 1218 $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ 1321 # ------------------------------------------- !! 1219 $(error Headers not exportable for the $(SRCARCH) architecture)) 1322 # vDSO install !! 1220 $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include 1323 !! 1221 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) 1324 PHONY += vdso_install !! 1222 1325 vdso_install: export INSTALL_FILES = $(vdso-i !! 1223 PHONY += headers_check_all 1326 vdso_install: !! 1224 headers_check_all: headers_install_all 1327 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1225 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1328 !! 1226 1329 # ------------------------------------------- !! 1227 PHONY += headers_check 1330 # Tools !! 1228 headers_check: headers_install 1331 !! 1229 $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1 1332 ifdef CONFIG_OBJTOOL !! 1230 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) HDRCHECK=1 1333 prepare: tools/objtool << 1334 endif << 1335 << 1336 ifdef CONFIG_BPF << 1337 ifdef CONFIG_DEBUG_INFO_BTF << 1338 prepare: tools/bpf/resolve_btfids << 1339 endif << 1340 endif << 1341 << 1342 # The tools build system is not a part of Kbu << 1343 # its own unique issues. If you need to integ << 1344 # please consider locating that tool outside << 1345 # standard Kbuild "hostprogs" syntax instead << 1346 # here. See Documentation/kbuild/makefiles.rs << 1347 << 1348 PHONY += resolve_btfids_clean << 1349 << 1350 resolve_btfids_O = $(abspath $(objtree))/tool << 1351 << 1352 # tools/bpf/resolve_btfids directory might no << 1353 # in output directory, skip its clean in that << 1354 resolve_btfids_clean: << 1355 ifneq ($(wildcard $(resolve_btfids_O)),) << 1356 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ << 1357 endif << 1358 << 1359 # Clear a bunch of variables before executing << 1360 ifeq ($(quiet),silent_) << 1361 tools_silent=s << 1362 endif << 1363 << 1364 tools/: FORCE << 1365 $(Q)mkdir -p $(objtree)/tools << 1366 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1367 << 1368 tools/%: FORCE << 1369 $(Q)mkdir -p $(objtree)/tools << 1370 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1371 1231 1372 # ------------------------------------------- 1232 # --------------------------------------------------------------------------- 1373 # Kernel selftest 1233 # Kernel selftest 1374 1234 1375 PHONY += kselftest 1235 PHONY += kselftest 1376 kselftest: headers !! 1236 kselftest: 1377 $(Q)$(MAKE) -C $(srctree)/tools/testi 1237 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 1378 1238 1379 kselftest-%: headers FORCE !! 1239 PHONY += kselftest-clean 1380 $(Q)$(MAKE) -C $(srctree)/tools/testi !! 1240 kselftest-clean: >> 1241 $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests clean 1381 1242 1382 PHONY += kselftest-merge 1243 PHONY += kselftest-merge 1383 kselftest-merge: 1244 kselftest-merge: 1384 $(if $(wildcard $(objtree)/.config),, 1245 $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1385 $(Q)find $(srctree)/tools/testing/sel !! 1246 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ 1386 xargs $(srctree)/scripts/kcon !! 1247 -m $(objtree)/.config \ 1387 $(Q)$(MAKE) -f $(srctree)/Makefile ol !! 1248 $(srctree)/tools/testing/selftests/*/config 1388 !! 1249 +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1389 # ------------------------------------------- << 1390 # Devicetree files << 1391 << 1392 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ << 1393 dtstree := arch/$(SRCARCH)/boot/dts << 1394 endif << 1395 << 1396 ifneq ($(dtstree),) << 1397 << 1398 %.dtb: dtbs_prepare << 1399 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1400 << 1401 %.dtbo: dtbs_prepare << 1402 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1403 << 1404 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ << 1405 dtbs: dtbs_prepare << 1406 $(Q)$(MAKE) $(build)=$(dtstree) need- << 1407 << 1408 # include/config/kernel.release is actually n << 1409 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) << 1410 # dtbs_install depend on it as dtbs_install m << 1411 dtbs_prepare: include/config/kernel.release s << 1412 << 1413 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), << 1414 export CHECK_DTBS=y << 1415 endif << 1416 << 1417 ifneq ($(CHECK_DTBS),) << 1418 dtbs_prepare: dt_binding_schemas << 1419 endif << 1420 << 1421 dtbs_check: dtbs << 1422 << 1423 dtbs_install: << 1424 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1425 << 1426 ifdef CONFIG_OF_EARLY_FLATTREE << 1427 all: dtbs << 1428 endif << 1429 << 1430 endif << 1431 << 1432 PHONY += scripts_dtc << 1433 scripts_dtc: scripts_basic << 1434 $(Q)$(MAKE) $(build)=scripts/dtc << 1435 << 1436 ifneq ($(filter dt_binding_check, $(MAKECMDGO << 1437 export CHECK_DTBS=y << 1438 endif << 1439 << 1440 PHONY += dt_binding_check dt_binding_schemas << 1441 dt_binding_check: dt_binding_schemas scripts_ << 1442 $(Q)$(MAKE) $(build)=Documentation/de << 1443 << 1444 dt_binding_schemas: << 1445 $(Q)$(MAKE) $(build)=Documentation/de << 1446 << 1447 PHONY += dt_compatible_check << 1448 dt_compatible_check: dt_binding_schemas << 1449 $(Q)$(MAKE) $(build)=Documentation/de << 1450 1250 1451 # ------------------------------------------- 1251 # --------------------------------------------------------------------------- 1452 # Modules 1252 # Modules 1453 1253 1454 ifdef CONFIG_MODULES 1254 ifdef CONFIG_MODULES 1455 1255 1456 # By default, build modules as well 1256 # By default, build modules as well 1457 1257 1458 all: modules 1258 all: modules 1459 1259 1460 # When we're building modules with modversion 1260 # When we're building modules with modversions, we need to consider 1461 # the built-in objects during the descend as 1261 # the built-in objects during the descend as well, in order to 1462 # make sure the checksums are up to date befo 1262 # make sure the checksums are up to date before we record them. 1463 ifdef CONFIG_MODVERSIONS 1263 ifdef CONFIG_MODVERSIONS 1464 KBUILD_BUILTIN := 1 1264 KBUILD_BUILTIN := 1 1465 endif 1265 endif 1466 1266 1467 # Build modules 1267 # Build modules 1468 # 1268 # >> 1269 # A module can be listed more than once in obj-m resulting in >> 1270 # duplicate lines in modules.order files. Those are removed >> 1271 # using awk while concatenating to the final file. >> 1272 >> 1273 PHONY += modules >> 1274 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin >> 1275 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order >> 1276 @$(kecho) ' Building modules, stage 2.'; >> 1277 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1469 1278 1470 # *.ko are usually independent of vmlinux, bu !! 1279 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1471 # is an exception. !! 1280 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1472 ifdef CONFIG_DEBUG_INFO_BTF_MODULES !! 1281 1473 KBUILD_BUILTIN := 1 !! 1282 %/modules.builtin: include/config/auto.conf include/config/tristate.conf 1474 modules: vmlinux !! 1283 $(Q)$(MAKE) $(modbuiltin)=$* 1475 endif << 1476 1284 1477 modules: modules_prepare << 1478 1285 1479 # Target to prepare building external modules 1286 # Target to prepare building external modules 1480 modules_prepare: prepare !! 1287 PHONY += modules_prepare 1481 $(Q)$(MAKE) $(build)=scripts scripts/ !! 1288 modules_prepare: prepare scripts >> 1289 >> 1290 # Target to install modules >> 1291 PHONY += modules_install >> 1292 modules_install: _modinst_ _modinst_post >> 1293 >> 1294 PHONY += _modinst_ >> 1295 _modinst_: >> 1296 @rm -rf $(MODLIB)/kernel >> 1297 @rm -f $(MODLIB)/source >> 1298 @mkdir -p $(MODLIB)/kernel >> 1299 @ln -s $(abspath $(srctree)) $(MODLIB)/source >> 1300 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ >> 1301 rm -f $(MODLIB)/build ; \ >> 1302 ln -s $(CURDIR) $(MODLIB)/build ; \ >> 1303 fi >> 1304 @cp -f $(objtree)/modules.order $(MODLIB)/ >> 1305 @cp -f $(objtree)/modules.builtin $(MODLIB)/ >> 1306 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1307 >> 1308 # This depmod is only for convenience to give the initial >> 1309 # boot a modules.dep even before / is mounted read-write. However the >> 1310 # boot script depmod is the master version. >> 1311 PHONY += _modinst_post >> 1312 _modinst_post: _modinst_ >> 1313 $(call cmd,depmod) >> 1314 >> 1315 ifeq ($(CONFIG_MODULE_SIG), y) >> 1316 PHONY += modules_sign >> 1317 modules_sign: >> 1318 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign >> 1319 endif >> 1320 >> 1321 else # CONFIG_MODULES >> 1322 >> 1323 # Modules not configured >> 1324 # --------------------------------------------------------------------------- >> 1325 >> 1326 PHONY += modules modules_install >> 1327 modules modules_install: >> 1328 @echo >&2 >> 1329 @echo >&2 "The present kernel configuration has modules disabled." >> 1330 @echo >&2 "Type 'make config' and enable loadable module support." >> 1331 @echo >&2 "Then build a kernel with module support enabled." >> 1332 @echo >&2 >> 1333 @exit 1 1482 1334 1483 endif # CONFIG_MODULES 1335 endif # CONFIG_MODULES 1484 1336 1485 ### 1337 ### 1486 # Cleaning is done on three levels. 1338 # Cleaning is done on three levels. 1487 # make clean Delete most generated files 1339 # make clean Delete most generated files 1488 # Leave enough to build extern 1340 # Leave enough to build external modules 1489 # make mrproper Delete the current configura 1341 # make mrproper Delete the current configuration, and all generated files 1490 # make distclean Remove editor backup files, 1342 # make distclean Remove editor backup files, patch leftover files and the like 1491 1343 1492 # Directories & files removed with 'make clea 1344 # Directories & files removed with 'make clean' 1493 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1345 CLEAN_DIRS += $(MODVERDIR) include/ksym 1494 modules.builtin modules.builti << 1495 modules.builtin.ranges vmlinux << 1496 compile_commands.json rust/tes << 1497 rust-project.json .vmlinux.obj << 1498 1346 1499 # Directories & files removed with 'make mrpr 1347 # Directories & files removed with 'make mrproper' 1500 MRPROPER_FILES += include/config include/gene !! 1348 MRPROPER_DIRS += include/config usr/include include/generated \ 1501 arch/$(SRCARCH)/include/gen !! 1349 arch/*/include/generated .tmp_objdiff 1502 debian snap tar-install PKG !! 1350 MRPROPER_FILES += .config .config.old .version \ 1503 .config .config.old .versio !! 1351 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 1504 Module.symvers \ !! 1352 signing_key.pem signing_key.priv signing_key.x509 \ 1505 certs/signing_key.pem \ !! 1353 x509.genkey extra_certificates signing_key.x509.keyid \ 1506 certs/x509.genkey \ !! 1354 signing_key.x509.signer vmlinux-gdb.py 1507 vmlinux-gdb.py \ << 1508 rpmbuild \ << 1509 rust/libmacros.so << 1510 1355 1511 # clean - Delete most, but leave enough to bu 1356 # clean - Delete most, but leave enough to build external modules 1512 # 1357 # 1513 clean: private rm-files := $(CLEAN_FILES) !! 1358 clean: rm-dirs := $(CLEAN_DIRS) >> 1359 clean: rm-files := $(CLEAN_FILES) >> 1360 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) 1514 1361 1515 PHONY += archclean vmlinuxclean !! 1362 PHONY += $(clean-dirs) clean archclean vmlinuxclean >> 1363 $(clean-dirs): >> 1364 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1516 1365 1517 vmlinuxclean: 1366 vmlinuxclean: 1518 $(Q)$(CONFIG_SHELL) $(srctree)/script 1367 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1519 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f 1368 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1520 1369 1521 clean: archclean vmlinuxclean resolve_btfids_ !! 1370 clean: archclean vmlinuxclean 1522 1371 1523 # mrproper - Delete all generated files, incl 1372 # mrproper - Delete all generated files, including .config 1524 # 1373 # 1525 mrproper: private rm-files := $(MRPROPER_FILE !! 1374 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) >> 1375 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1526 mrproper-dirs := $(addprefix _mrproper_, 1376 mrproper-dirs := $(addprefix _mrproper_,scripts) 1527 1377 1528 PHONY += $(mrproper-dirs) mrproper !! 1378 PHONY += $(mrproper-dirs) mrproper archmrproper 1529 $(mrproper-dirs): 1379 $(mrproper-dirs): 1530 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1380 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1531 1381 1532 mrproper: clean $(mrproper-dirs) !! 1382 mrproper: clean archmrproper $(mrproper-dirs) >> 1383 $(call cmd,rmdirs) 1533 $(call cmd,rmfiles) 1384 $(call cmd,rmfiles) 1534 @find . $(RCS_FIND_IGNORE) \ << 1535 \( -name '*.rmeta' \) \ << 1536 -type f -print | xargs rm -f << 1537 1385 1538 # distclean 1386 # distclean 1539 # 1387 # 1540 PHONY += distclean 1388 PHONY += distclean 1541 1389 1542 distclean: mrproper 1390 distclean: mrproper 1543 @find . $(RCS_FIND_IGNORE) \ !! 1391 @find $(srctree) $(RCS_FIND_IGNORE) \ 1544 \( -name '*.orig' -o -name '* 1392 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1545 -o -name '*.bak' -o -name '#* 1393 -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1546 -o -name 'core' -o -name tags !! 1394 -o -name 'core' \) \ 1547 -o -name GPATH -o -name GRTAG << 1548 -type f -print | xargs rm -f 1395 -type f -print | xargs rm -f 1549 1396 1550 1397 1551 # Packaging of the kernel to various formats 1398 # Packaging of the kernel to various formats 1552 # ------------------------------------------- 1399 # --------------------------------------------------------------------------- >> 1400 package-dir := scripts/package 1553 1401 1554 %src-pkg: FORCE 1402 %src-pkg: FORCE 1555 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1403 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1556 %pkg: include/config/kernel.release FORCE 1404 %pkg: include/config/kernel.release FORCE 1557 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1405 $(Q)$(MAKE) $(build)=$(package-dir) $@ >> 1406 1558 1407 1559 # Brief documentation of the typical targets 1408 # Brief documentation of the typical targets used 1560 # ------------------------------------------- 1409 # --------------------------------------------------------------------------- 1561 1410 1562 boards := $(wildcard $(srctree)/arch/$(SRCARC 1411 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1563 boards := $(sort $(notdir $(boards))) 1412 boards := $(sort $(notdir $(boards))) 1564 board-dirs := $(dir $(wildcard $(srctree)/arc 1413 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1565 board-dirs := $(sort $(notdir $(board-dirs:/= 1414 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1566 1415 1567 PHONY += help 1416 PHONY += help 1568 help: 1417 help: 1569 @echo 'Cleaning targets:' 1418 @echo 'Cleaning targets:' 1570 @echo ' clean - Remove mo 1419 @echo ' clean - Remove most generated files but keep the config and' 1571 @echo ' enough bu 1420 @echo ' enough build support to build external modules' 1572 @echo ' mrproper - Remove al 1421 @echo ' mrproper - Remove all generated files + config + various backup files' 1573 @echo ' distclean - mrproper 1422 @echo ' distclean - mrproper + remove editor backup and patch files' 1574 @echo '' 1423 @echo '' >> 1424 @echo 'Configuration targets:' 1575 @$(MAKE) -f $(srctree)/scripts/kconfi 1425 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1576 @echo '' 1426 @echo '' 1577 @echo 'Other generic targets:' 1427 @echo 'Other generic targets:' 1578 @echo ' all - Build all 1428 @echo ' all - Build all targets marked with [*]' 1579 @echo '* vmlinux - Build the 1429 @echo '* vmlinux - Build the bare kernel' 1580 @echo '* modules - Build all 1430 @echo '* modules - Build all modules' 1581 @echo ' modules_install - Install a 1431 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1582 @echo ' vdso_install - Install u << 1583 @echo ' dir/ - Build all 1432 @echo ' dir/ - Build all files in dir and below' 1584 @echo ' dir/file.[ois] - Build spe 1433 @echo ' dir/file.[ois] - Build specified target only' 1585 @echo ' dir/file.ll - Build the 1434 @echo ' dir/file.ll - Build the LLVM assembly file' 1586 @echo ' (requires 1435 @echo ' (requires compiler support for LLVM assembly generation)' 1587 @echo ' dir/file.lst - Build spe 1436 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1588 @echo ' (requires 1437 @echo ' (requires a recent binutils and recent build (System.map))' 1589 @echo ' dir/file.ko - Build mod 1438 @echo ' dir/file.ko - Build module including final link' 1590 @echo ' modules_prepare - Set up fo 1439 @echo ' modules_prepare - Set up for building external modules' 1591 @echo ' tags/TAGS - Generate 1440 @echo ' tags/TAGS - Generate tags file for editors' 1592 @echo ' cscope - Generate 1441 @echo ' cscope - Generate cscope index' 1593 @echo ' gtags - Generate 1442 @echo ' gtags - Generate GNU GLOBAL index' 1594 @echo ' kernelrelease - Output th 1443 @echo ' kernelrelease - Output the release version string (use with make -s)' 1595 @echo ' kernelversion - Output th 1444 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1596 @echo ' image_name - Output th 1445 @echo ' image_name - Output the image name (use with make -s)' 1597 @echo ' headers_install - Install s 1446 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1598 echo ' (default: 1447 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1599 echo '' 1448 echo '' 1600 @echo 'Static analysers:' 1449 @echo 'Static analysers:' 1601 @echo ' checkstack - Generate !! 1450 @echo ' checkstack - Generate a list of stack hogs' 1602 @echo ' with a st !! 1451 @echo ' namespacecheck - Name space analysis on compiled kernel' 1603 @echo ' versioncheck - Sanity ch 1452 @echo ' versioncheck - Sanity check on version.h usage' 1604 @echo ' includecheck - Check for 1453 @echo ' includecheck - Check for duplicate included header files' 1605 @echo ' export_report - List the 1454 @echo ' export_report - List the usages of all exported symbols' >> 1455 @echo ' headers_check - Sanity check on exported headers' 1606 @echo ' headerdep - Detect in 1456 @echo ' headerdep - Detect inclusion cycles in headers' 1607 @echo ' coccicheck - Check wit 1457 @echo ' coccicheck - Check with Coccinelle' 1608 @echo ' clang-analyzer - Check wit << 1609 @echo ' clang-tidy - Check wit << 1610 @echo '' << 1611 @echo 'Tools:' << 1612 @echo ' nsdeps - Generate << 1613 @echo '' 1458 @echo '' 1614 @echo 'Kernel selftest:' 1459 @echo 'Kernel selftest:' 1615 @echo ' kselftest - Build a !! 1460 @echo ' kselftest - Build and run kernel selftest (run as root)' 1616 @echo ' Build, !! 1461 @echo ' Build, install, and boot kernel before' 1617 @echo ' running !! 1462 @echo ' running kselftest on it' 1618 @echo ' Run as !! 1463 @echo ' kselftest-clean - Remove all generated kselftest files' 1619 @echo ' kselftest-all - Build k !! 1464 @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existing' 1620 @echo ' kselftest-install - Build a !! 1465 @echo ' .config.' 1621 @echo ' kselftest-clean - Remove << 1622 @echo ' kselftest-merge - Merge a << 1623 @echo ' kselfte << 1624 @echo '' << 1625 @echo 'Rust targets:' << 1626 @echo ' rustavailable - Checks wh << 1627 @echo ' available << 1628 @echo ' rustfmt - Reformat << 1629 @echo ' rustfmtcheck - Checks if << 1630 @echo ' is format << 1631 @echo ' rustdoc - Generate << 1632 @echo ' (requires << 1633 @echo ' rusttest - Runs the << 1634 @echo ' (requires << 1635 @echo ' rust-analyzer - Generate << 1636 @echo ' (requires << 1637 @echo ' dir/file.[os] - Build spe << 1638 @echo ' dir/file.rsi - Build mac << 1639 @echo ' Run with << 1640 @echo ' The outpu << 1641 @echo ' dir/file.ll - Build the << 1642 @echo '' 1466 @echo '' 1643 @$(if $(dtstree), \ << 1644 echo 'Devicetree:'; \ << 1645 echo '* dtbs - << 1646 echo ' dtbs_install - << 1647 echo ' dt_binding_check - << 1648 echo ' dt_binding_schemas - << 1649 echo ' dtbs_check - << 1650 echo '') << 1651 << 1652 @echo 'Userspace tools targets:' 1467 @echo 'Userspace tools targets:' 1653 @echo ' use "make tools/help"' 1468 @echo ' use "make tools/help"' 1654 @echo ' or "cd tools; make help"' 1469 @echo ' or "cd tools; make help"' 1655 @echo '' 1470 @echo '' 1656 @echo 'Kernel packaging:' 1471 @echo 'Kernel packaging:' 1657 @$(MAKE) -f $(srctree)/scripts/Makefi !! 1472 @$(MAKE) $(build)=$(package-dir) help 1658 @echo '' 1473 @echo '' 1659 @echo 'Documentation targets:' 1474 @echo 'Documentation targets:' 1660 @$(MAKE) -f $(srctree)/Documentation/ 1475 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1661 @echo '' 1476 @echo '' 1662 @echo 'Architecture-specific targets !! 1477 @echo 'Architecture specific targets ($(SRCARCH)):' 1663 @$(or $(archhelp),\ !! 1478 @$(if $(archhelp),$(archhelp),\ 1664 echo ' No architecture-speci !! 1479 echo ' No architecture specific help defined for $(SRCARCH)') 1665 @echo '' 1480 @echo '' 1666 @$(if $(boards), \ 1481 @$(if $(boards), \ 1667 $(foreach b, $(boards), \ 1482 $(foreach b, $(boards), \ 1668 printf " %-27s - Build for % !! 1483 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1669 echo '') 1484 echo '') 1670 @$(if $(board-dirs), \ 1485 @$(if $(board-dirs), \ 1671 $(foreach b, $(board-dirs), \ 1486 $(foreach b, $(board-dirs), \ 1672 printf " %-16s - Show %s-spe 1487 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1673 printf " %-16s - Show all of 1488 printf " %-16s - Show all of the above\\n" help-boards; \ 1674 echo '') 1489 echo '') 1675 1490 1676 @echo ' make V=n [targets] 1: ver !! 1491 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1677 @echo ' 2: giv !! 1492 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1678 @echo ' V=1 an << 1679 @echo ' make O=dir [targets] Locate 1493 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1680 @echo ' make C=1 [targets] Check !! 1494 @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)' 1681 @echo ' (spars << 1682 @echo ' make C=2 [targets] Force 1495 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1683 @echo ' make RECORDMCOUNT_WARN=1 [t 1496 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1684 @echo ' make W=n [targets] Enable !! 1497 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1685 @echo ' 1: warnings w 1498 @echo ' 1: warnings which may be relevant and do not occur too often' 1686 @echo ' 2: warnings w 1499 @echo ' 2: warnings which occur quite often but may still be relevant' 1687 @echo ' 3: more obscu 1500 @echo ' 3: more obscure warnings, can most likely be ignored' 1688 @echo ' c: extra chec << 1689 @echo ' e: warnings a << 1690 @echo ' Multiple leve 1501 @echo ' Multiple levels can be combined with W=12 or W=123' 1691 @$(if $(dtstree), \ << 1692 echo ' make CHECK_DTBS=1 [ta << 1693 echo ' This can be ap << 1694 ) << 1695 @echo '' 1502 @echo '' 1696 @echo 'Execute "make" or "make all" 1503 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1697 @echo 'For further info see the ./RE 1504 @echo 'For further info see the ./README file' 1698 1505 1699 1506 1700 help-board-dirs := $(addprefix help-,$(board- 1507 help-board-dirs := $(addprefix help-,$(board-dirs)) 1701 1508 1702 help-boards: $(help-board-dirs) 1509 help-boards: $(help-board-dirs) 1703 1510 1704 boards-per-dir = $(sort $(notdir $(wildcard $ 1511 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1705 1512 1706 $(help-board-dirs): help-%: 1513 $(help-board-dirs): help-%: 1707 @echo 'Architecture-specific targets !! 1514 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1708 @$(if $(boards-per-dir), \ 1515 @$(if $(boards-per-dir), \ 1709 $(foreach b, $(boards-per-dir 1516 $(foreach b, $(boards-per-dir), \ 1710 printf " %-24s - Build for % 1517 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1711 echo '') 1518 echo '') 1712 1519 1713 1520 1714 # Documentation targets 1521 # Documentation targets 1715 # ------------------------------------------- 1522 # --------------------------------------------------------------------------- 1716 DOC_TARGETS := xmldocs latexdocs pdfdocs html 1523 DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1717 linkcheckdocs dochelp refcheck !! 1524 linkcheckdocs dochelp refcheckdocs 1718 PHONY += $(DOC_TARGETS) 1525 PHONY += $(DOC_TARGETS) 1719 $(DOC_TARGETS): !! 1526 $(DOC_TARGETS): scripts_basic FORCE 1720 $(Q)$(MAKE) $(build)=Documentation $@ 1527 $(Q)$(MAKE) $(build)=Documentation $@ 1721 1528 1722 << 1723 # Rust targets << 1724 # ------------------------------------------- << 1725 << 1726 # "Is Rust available?" target << 1727 PHONY += rustavailable << 1728 rustavailable: << 1729 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1730 << 1731 # Documentation target << 1732 # << 1733 # Using the singular to avoid running afoul o << 1734 PHONY += rustdoc << 1735 rustdoc: prepare << 1736 $(Q)$(MAKE) $(build)=rust $@ << 1737 << 1738 # Testing target << 1739 PHONY += rusttest << 1740 rusttest: prepare << 1741 $(Q)$(MAKE) $(build)=rust $@ << 1742 << 1743 # Formatting targets << 1744 PHONY += rustfmt rustfmtcheck << 1745 << 1746 # We skip `rust/alloc` since we want to minim << 1747 # << 1748 # We match using absolute paths since `find` << 1749 # when matching, which is a problem when e.g. << 1750 # We `grep` afterwards in order to remove the << 1751 rustfmt: << 1752 $(Q)find $(abs_srctree) -type f -name << 1753 -o -path $(abs_srctree)/rust/ << 1754 -o -path $(abs_objtree)/rust/ << 1755 | grep -Fv $(abs_srctree)/rus << 1756 | grep -Fv $(abs_objtree)/rus << 1757 | grep -Fv generated \ << 1758 | xargs $(RUSTFMT) $(rustfmt_ << 1759 << 1760 rustfmtcheck: rustfmt_flags = --check << 1761 rustfmtcheck: rustfmt << 1762 << 1763 # Misc << 1764 # ------------------------------------------- << 1765 << 1766 PHONY += misc-check << 1767 misc-check: << 1768 $(Q)$(srctree)/scripts/misc-check << 1769 << 1770 all: misc-check << 1771 << 1772 PHONY += scripts_gdb << 1773 scripts_gdb: prepare0 << 1774 $(Q)$(MAKE) $(build)=scripts/gdb << 1775 $(Q)ln -fsn $(abspath $(srctree)/scri << 1776 << 1777 ifdef CONFIG_GDB_SCRIPTS << 1778 all: scripts_gdb << 1779 endif << 1780 << 1781 else # KBUILD_EXTMOD 1529 else # KBUILD_EXTMOD 1782 1530 1783 filechk_kernel.release = echo $(KERNELRELEASE << 1784 << 1785 ### 1531 ### 1786 # External module support. 1532 # External module support. 1787 # When building external modules the kernel u 1533 # When building external modules the kernel used as basis is considered 1788 # read-only, and no consistency checks are ma 1534 # read-only, and no consistency checks are made and the make 1789 # system is not used on the basis kernel. If 1535 # system is not used on the basis kernel. If updates are required 1790 # in the basis kernel ordinary make commands !! 1536 # in the basis kernel ordinary make commands (without M=...) must >> 1537 # be used. >> 1538 # >> 1539 # The following are the only valid targets when building external >> 1540 # modules. >> 1541 # make M=dir clean Delete all automatically generated files >> 1542 # make M=dir modules Make all modules in specified dir >> 1543 # make M=dir Same as 'make M=dir modules' >> 1544 # make M=dir modules_install >> 1545 # Install the modules built in the module directory >> 1546 # Assumes install directory is already created 1791 1547 1792 # We are always building only modules. !! 1548 # We are always building modules 1793 KBUILD_BUILTIN := << 1794 KBUILD_MODULES := 1 1549 KBUILD_MODULES := 1 1795 1550 1796 build-dir := $(KBUILD_EXTMOD) !! 1551 PHONY += $(objtree)/Module.symvers >> 1552 $(objtree)/Module.symvers: >> 1553 @test -e $(objtree)/Module.symvers || ( \ >> 1554 echo; \ >> 1555 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ >> 1556 echo " is missing; modules will have no dependencies and modversions."; \ >> 1557 echo ) >> 1558 >> 1559 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) >> 1560 PHONY += $(module-dirs) modules >> 1561 $(module-dirs): prepare $(objtree)/Module.symvers >> 1562 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) >> 1563 >> 1564 modules: $(module-dirs) >> 1565 @$(kecho) ' Building modules, stage 2.'; >> 1566 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1797 1567 1798 compile_commands.json: $(extmod_prefix)compil !! 1568 PHONY += modules_install 1799 PHONY += compile_commands.json !! 1569 modules_install: _emodinst_ _emodinst_post 1800 1570 1801 clean-dirs := $(KBUILD_EXTMOD) !! 1571 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1802 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1572 PHONY += _emodinst_ 1803 $(KBUILD_EXTMOD)/compile_commands.jso !! 1573 _emodinst_: 1804 !! 1574 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1805 PHONY += prepare !! 1575 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1806 # now expand this into a simple variable to r !! 1576 1807 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT !! 1577 PHONY += _emodinst_post 1808 prepare: !! 1578 _emodinst_post: _emodinst_ 1809 @if [ "$(CC_VERSION_TEXT)" != "$(CONF !! 1579 $(call cmd,depmod) 1810 echo >&2 "warning: the compil !! 1580 1811 echo >&2 " The kernel was bu !! 1581 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1812 echo >&2 " You are using: !! 1582 1813 fi !! 1583 PHONY += $(clean-dirs) clean >> 1584 $(clean-dirs): >> 1585 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) >> 1586 >> 1587 clean: rm-dirs := $(MODVERDIR) >> 1588 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1814 1589 1815 PHONY += help 1590 PHONY += help 1816 help: 1591 help: 1817 @echo ' Building external modules.' 1592 @echo ' Building external modules.' 1818 @echo ' Syntax: make -C path/to/ker 1593 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1819 @echo '' 1594 @echo '' 1820 @echo ' modules - default t 1595 @echo ' modules - default target, build the module(s)' 1821 @echo ' modules_install - install t 1596 @echo ' modules_install - install the module' 1822 @echo ' clean - remove ge 1597 @echo ' clean - remove generated files in module directory only' 1823 @echo ' rust-analyzer - generate << 1824 @echo '' 1598 @echo '' 1825 1599 1826 ifndef CONFIG_MODULES !! 1600 # Dummies... 1827 modules modules_install: __external_modules_e !! 1601 PHONY += prepare scripts 1828 __external_modules_error: !! 1602 prepare: 1829 @echo >&2 '***' !! 1603 $(cmd_crmodverdir) 1830 @echo >&2 '*** The present kernel dis !! 1604 scripts: ; 1831 @echo >&2 '*** You cannot build or in << 1832 @echo >&2 '***' << 1833 @false << 1834 endif << 1835 << 1836 endif # KBUILD_EXTMOD 1605 endif # KBUILD_EXTMOD 1837 1606 1838 # ------------------------------------------- << 1839 # Modules << 1840 << 1841 PHONY += modules modules_install modules_sign << 1842 << 1843 modules_install: << 1844 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1845 sign-only=$(if $(filter modules_insta << 1846 << 1847 ifeq ($(CONFIG_MODULE_SIG),y) << 1848 # modules_sign is a subset of modules_install << 1849 # 'make modules_install modules_sign' is equi << 1850 modules_sign: modules_install << 1851 @: << 1852 else << 1853 modules_sign: << 1854 @echo >&2 '***' << 1855 @echo >&2 '*** CONFIG_MODULE_SIG is d << 1856 @echo >&2 '***' << 1857 @false << 1858 endif << 1859 << 1860 ifdef CONFIG_MODULES << 1861 << 1862 $(MODORDER): $(build-dir) << 1863 @: << 1864 << 1865 # KBUILD_MODPOST_NOFINAL can be set to skip t << 1866 # This is solely useful to speed up test comp << 1867 modules: modpost << 1868 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1869 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1870 endif << 1871 << 1872 PHONY += modules_check << 1873 modules_check: $(MODORDER) << 1874 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1875 << 1876 else # CONFIG_MODULES << 1877 << 1878 modules: << 1879 @: << 1880 << 1881 KBUILD_MODULES := << 1882 << 1883 endif # CONFIG_MODULES << 1884 << 1885 PHONY += modpost << 1886 modpost: $(if $(single-build),, $(if $(KBUILD << 1887 $(if $(KBUILD_MODULES), modules_chec << 1888 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1889 << 1890 # Single targets << 1891 # ------------------------------------------- << 1892 # To build individual files in subdirectories << 1893 # << 1894 # make foo/bar/baz.s << 1895 # << 1896 # The supported suffixes for single-target ar << 1897 # << 1898 # To build only under specific subdirectories << 1899 # << 1900 # make foo/bar/baz/ << 1901 << 1902 ifdef single-build << 1903 << 1904 # .ko is special because modpost is needed << 1905 single-ko := $(sort $(filter %.ko, $(MAKECMDG << 1906 single-no-ko := $(filter-out $(single-ko), $( << 1907 $(foreach x, o mod, $(patsubs << 1908 << 1909 $(single-ko): single_modules << 1910 @: << 1911 $(single-no-ko): $(build-dir) << 1912 @: << 1913 << 1914 # Remove MODORDER when done because it is not << 1915 PHONY += single_modules << 1916 single_modules: $(single-no-ko) modules_prepa << 1917 $(Q){ $(foreach m, $(single-ko), echo << 1918 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1919 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1920 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1921 endif << 1922 $(Q)rm -f $(MODORDER) << 1923 << 1924 single-goals := $(addprefix $(build-dir)/, $( << 1925 << 1926 KBUILD_MODULES := 1 << 1927 << 1928 endif << 1929 << 1930 # Preset locale variables to speed up the bui << 1931 # tweaks to this spot to avoid wrong language << 1932 # make menuconfig etc. << 1933 # Error messages still appears in the origina << 1934 PHONY += $(build-dir) << 1935 $(build-dir): prepare << 1936 $(Q)$(MAKE) $(build)=$@ need-builtin= << 1937 << 1938 clean-dirs := $(addprefix _clean_, $(clean-di << 1939 PHONY += $(clean-dirs) clean << 1940 $(clean-dirs): << 1941 $(Q)$(MAKE) $(clean)=$(patsubst _clea << 1942 << 1943 clean: $(clean-dirs) 1607 clean: $(clean-dirs) >> 1608 $(call cmd,rmdirs) 1944 $(call cmd,rmfiles) 1609 $(call cmd,rmfiles) 1945 @find $(or $(KBUILD_EXTMOD), .) $(RCS !! 1610 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1946 \( -name '*.[aios]' -o -name !! 1611 \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ 1947 -o -name '*.ko.*' \ !! 1612 -o -name '*.ko.*' -o -name '*.dtb' -o -name '*.dtb.S' \ 1948 -o -name '*.dtb' -o -name '*. << 1949 -o -name '*.dtb.S' -o -name ' << 1950 -o -name '*.dt.yaml' -o -name << 1951 -o -name '*.dwo' -o -name '*. 1613 -o -name '*.dwo' -o -name '*.lst' \ 1952 -o -name '*.su' -o -name '*.m !! 1614 -o -name '*.su' \ 1953 -o -name '.*.d' -o -name '.*. 1615 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1954 -o -name '*.lex.c' -o -name ' 1616 -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 1955 -o -name '*.asn1.[ch]' \ 1617 -o -name '*.asn1.[ch]' \ 1956 -o -name '*.symtypes' -o -nam 1618 -o -name '*.symtypes' -o -name 'modules.order' \ >> 1619 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1957 -o -name '*.c.[012]*.*' \ 1620 -o -name '*.c.[012]*.*' \ 1958 -o -name '*.ll' \ 1621 -o -name '*.ll' \ 1959 -o -name '*.gcno' \ !! 1622 -o -name '*.gcno' \) -type f -print | xargs rm -f 1960 \) -type f -print \ << 1961 -o -name '.tmp_*' -print \ << 1962 | xargs rm -rf << 1963 1623 1964 # Generate tags for editors 1624 # Generate tags for editors 1965 # ------------------------------------------- 1625 # --------------------------------------------------------------------------- 1966 quiet_cmd_tags = GEN $@ 1626 quiet_cmd_tags = GEN $@ 1967 cmd_tags = $(BASH) $(srctree)/scripts/t !! 1627 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1968 1628 1969 tags TAGS cscope gtags: FORCE 1629 tags TAGS cscope gtags: FORCE 1970 $(call cmd,tags) 1630 $(call cmd,tags) 1971 1631 1972 # Generate rust-project.json (a file that des << 1973 # Rust projects) for rust-analyzer (an implem << 1974 # Protocol). << 1975 PHONY += rust-analyzer << 1976 rust-analyzer: << 1977 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1978 $(Q)$(MAKE) $(build)=rust $@ << 1979 << 1980 # Script to generate missing namespace depend << 1981 # ------------------------------------------- << 1982 << 1983 PHONY += nsdeps << 1984 nsdeps: export KBUILD_NSDEPS=1 << 1985 nsdeps: modules << 1986 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1987 << 1988 # Clang Tooling << 1989 # ------------------------------------------- << 1990 << 1991 quiet_cmd_gen_compile_commands = GEN $@ << 1992 cmd_gen_compile_commands = $(PYTHON3) $ << 1993 << 1994 $(extmod_prefix)compile_commands.json: $(srct << 1995 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K << 1996 $(if $(CONFIG_MODULES), $(MODORDER)) << 1997 $(call if_changed,gen_compile_command << 1998 << 1999 targets += $(extmod_prefix)compile_commands.j << 2000 << 2001 PHONY += clang-tidy clang-analyzer << 2002 << 2003 ifdef CONFIG_CC_IS_CLANG << 2004 quiet_cmd_clang_tools = CHECK $< << 2005 cmd_clang_tools = $(PYTHON3) $(srctree) << 2006 << 2007 clang-tidy clang-analyzer: $(extmod_prefix)co << 2008 $(call cmd,clang_tools) << 2009 else << 2010 clang-tidy clang-analyzer: << 2011 @echo "$@ requires CC=clang" >&2 << 2012 @false << 2013 endif << 2014 << 2015 # Scripts to check various things for consist 1632 # Scripts to check various things for consistency 2016 # ------------------------------------------- 1633 # --------------------------------------------------------------------------- 2017 1634 2018 PHONY += includecheck versioncheck coccicheck !! 1635 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 2019 1636 2020 includecheck: 1637 includecheck: 2021 find $(srctree)/* $(RCS_FIND_IGNORE) 1638 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2022 -name '*.[hcS]' -type f -prin 1639 -name '*.[hcS]' -type f -print | sort \ 2023 | xargs $(PERL) -w $(srctree) 1640 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 2024 1641 2025 versioncheck: 1642 versioncheck: 2026 find $(srctree)/* $(RCS_FIND_IGNORE) 1643 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2027 -name '*.[hcS]' -type f -prin 1644 -name '*.[hcS]' -type f -print | sort \ 2028 | xargs $(PERL) -w $(srctree) 1645 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 2029 1646 2030 coccicheck: 1647 coccicheck: 2031 $(Q)$(BASH) $(srctree)/scripts/$@ !! 1648 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ >> 1649 >> 1650 namespacecheck: >> 1651 $(PERL) $(srctree)/scripts/namespace.pl 2032 1652 2033 export_report: 1653 export_report: 2034 $(PERL) $(srctree)/scripts/export_rep 1654 $(PERL) $(srctree)/scripts/export_report.pl 2035 1655 >> 1656 endif #ifeq ($(config-targets),1) >> 1657 endif #ifeq ($(mixed-targets),1) >> 1658 2036 PHONY += checkstack kernelrelease kernelversi 1659 PHONY += checkstack kernelrelease kernelversion image_name 2037 1660 2038 # UML needs a little special treatment here. 1661 # UML needs a little special treatment here. It wants to use the host 2039 # toolchain, so needs $(SUBARCH) passed to ch 1662 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 2040 # else wants $(ARCH), including people doing 1663 # else wants $(ARCH), including people doing cross-builds, which means 2041 # that $(SUBARCH) doesn't work here. 1664 # that $(SUBARCH) doesn't work here. 2042 ifeq ($(ARCH), um) 1665 ifeq ($(ARCH), um) 2043 CHECKSTACK_ARCH := $(SUBARCH) 1666 CHECKSTACK_ARCH := $(SUBARCH) 2044 else 1667 else 2045 CHECKSTACK_ARCH := $(ARCH) 1668 CHECKSTACK_ARCH := $(ARCH) 2046 endif 1669 endif 2047 MINSTACKSIZE ?= 100 << 2048 checkstack: 1670 checkstack: 2049 $(OBJDUMP) -d vmlinux $$(find . -name 1671 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 2050 $(PERL) $(srctree)/scripts/checkstack !! 1672 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 2051 1673 2052 kernelrelease: 1674 kernelrelease: 2053 @$(filechk_kernel.release) !! 1675 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 2054 1676 2055 kernelversion: 1677 kernelversion: 2056 @echo $(KERNELVERSION) 1678 @echo $(KERNELVERSION) 2057 1679 2058 image_name: 1680 image_name: 2059 @echo $(KBUILD_IMAGE) 1681 @echo $(KBUILD_IMAGE) 2060 1682 2061 PHONY += run-command !! 1683 # Clear a bunch of variables before executing the submake 2062 run-command: !! 1684 tools/: FORCE 2063 $(Q)$(KBUILD_RUN_COMMAND) !! 1685 $(Q)mkdir -p $(objtree)/tools >> 1686 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/ >> 1687 >> 1688 tools/%: FORCE >> 1689 $(Q)mkdir -p $(objtree)/tools >> 1690 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/ $* >> 1691 >> 1692 # Single targets >> 1693 # --------------------------------------------------------------------------- >> 1694 # Single targets are compatible with: >> 1695 # - build with mixed source and output >> 1696 # - build with separate output dir 'make O=...' >> 1697 # - external modules >> 1698 # >> 1699 # target-dir => where to store outputfile >> 1700 # build-dir => directory in kernel source tree to use >> 1701 >> 1702 ifeq ($(KBUILD_EXTMOD),) >> 1703 build-dir = $(patsubst %/,%,$(dir $@)) >> 1704 target-dir = $(dir $@) >> 1705 else >> 1706 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) >> 1707 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) >> 1708 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) >> 1709 endif >> 1710 >> 1711 %.s: %.c prepare scripts FORCE >> 1712 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1713 %.i: %.c prepare scripts FORCE >> 1714 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1715 %.o: %.c prepare scripts FORCE >> 1716 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1717 %.lst: %.c prepare scripts FORCE >> 1718 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1719 %.s: %.S prepare scripts FORCE >> 1720 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1721 %.o: %.S prepare scripts FORCE >> 1722 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1723 %.symtypes: %.c prepare scripts FORCE >> 1724 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1725 %.ll: %.c prepare scripts FORCE >> 1726 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1727 >> 1728 # Modules >> 1729 /: prepare scripts FORCE >> 1730 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1731 $(build)=$(build-dir) >> 1732 # Make sure the latest headers are built for Documentation >> 1733 Documentation/ samples/: headers_install >> 1734 %/: prepare scripts FORCE >> 1735 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1736 $(build)=$(build-dir) >> 1737 %.ko: prepare scripts FORCE >> 1738 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1739 $(build)=$(build-dir) $(@:.ko=.o) >> 1740 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1741 >> 1742 # FIXME Should go into a make.lib or something >> 1743 # =========================================================================== >> 1744 >> 1745 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) >> 1746 cmd_rmdirs = rm -rf $(rm-dirs) 2064 1747 2065 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 1748 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2066 cmd_rmfiles = rm -rf $(rm-files) !! 1749 cmd_rmfiles = rm -f $(rm-files) >> 1750 >> 1751 # Run depmod only if we have System.map and depmod is executable >> 1752 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) >> 1753 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ >> 1754 $(KERNELRELEASE) 2067 1755 2068 # read saved command lines for existing targe !! 1756 # Create temporary dir for module support files 2069 existing-targets := $(wildcard $(sort $(targe !! 1757 # clean it up only when building all modules >> 1758 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ >> 1759 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 2070 1760 2071 -include $(foreach f,$(existing-targets),$(di !! 1761 # read all saved command lines >> 1762 >> 1763 cmd_files := $(wildcard .*.cmd $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd)) >> 1764 >> 1765 ifneq ($(cmd_files),) >> 1766 $(cmd_files): ; # Do not try to update included dependency files >> 1767 include $(cmd_files) >> 1768 endif 2072 1769 2073 endif # config-build !! 1770 endif # skip-makefile 2074 endif # mixed-build << 2075 endif # need-sub-make << 2076 1771 2077 PHONY += FORCE 1772 PHONY += FORCE 2078 FORCE: 1773 FORCE: 2079 1774 2080 # Declare the contents of the PHONY variable 1775 # Declare the contents of the PHONY variable as phony. We keep that 2081 # information in a variable so we can use it 1776 # information in a variable so we can use it in if_changed and friends. 2082 .PHONY: $(PHONY) 1777 .PHONY: $(PHONY)
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.