1 # SPDX-License-Identifier: GPL-2.0 !! 1 VERSION = 4 2 VERSION = 6 !! 2 PATCHLEVEL = 13 3 PATCHLEVEL = 11 !! 3 SUBLEVEL = 16 4 SUBLEVEL = 5 << 5 EXTRAVERSION = 4 EXTRAVERSION = 6 NAME = Baby Opossum Posse !! 5 NAME = Fearless Coyote 7 6 8 # *DOCUMENTATION* 7 # *DOCUMENTATION* 9 # To see a list of typical targets execute "ma 8 # To see a list of typical targets execute "make help" 10 # More info can be located in ./README 9 # More info can be located in ./README 11 # Comments in this file are targeted only to t 10 # Comments in this file are targeted only to the developer, do not 12 # expect to learn how to build the kernel read 11 # expect to learn how to build the kernel reading this file. 13 12 14 ifeq ($(filter output-sync,$(.FEATURES)),) !! 13 # o Do not use make's built-in rules and variables 15 $(error GNU Make >= 4.0 is required. Your Make !! 14 # (this increases performance and avoids hard-to-debug behaviour); 16 endif !! 15 # o Look for make include files relative to root of kernel src >> 16 MAKEFLAGS += -rR --include-dir=$(CURDIR) 17 17 18 $(if $(filter __%, $(MAKECMDGOALS)), \ !! 18 # Avoid funny character set dependencies 19 $(error targets prefixed with '__' are !! 19 unexport LC_ALL >> 20 LC_COLLATE=C >> 21 LC_NUMERIC=C >> 22 export LC_COLLATE LC_NUMERIC 20 23 21 # That's our default target when none is given !! 24 # Avoid interference with shell env settings 22 PHONY := __all !! 25 unexport GREP_OPTIONS 23 __all: << 24 26 25 # We are using a recursive build, so we need t 27 # We are using a recursive build, so we need to do a little thinking 26 # to get the ordering right. 28 # to get the ordering right. 27 # 29 # 28 # Most importantly: sub-Makefiles should only 30 # Most importantly: sub-Makefiles should only ever modify files in 29 # their own directory. If in some directory we 31 # their own directory. If in some directory we have a dependency on 30 # a file in another dir (which doesn't happen 32 # a file in another dir (which doesn't happen often, but it's often 31 # unavoidable when linking the built-in.a targ !! 33 # unavoidable when linking the built-in.o targets which finally 32 # turn into vmlinux), we will call a sub make 34 # turn into vmlinux), we will call a sub make in that other dir, and 33 # after that we are sure that everything which 35 # after that we are sure that everything which is in that other dir 34 # is now up to date. 36 # is now up to date. 35 # 37 # 36 # The only cases where we need to modify files 38 # The only cases where we need to modify files which have global 37 # effects are thus separated out and done befo 39 # effects are thus separated out and done before the recursive 38 # descending is started. They are now explicit 40 # descending is started. They are now explicitly listed as the 39 # prepare rule. 41 # prepare rule. 40 42 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 43 # Beautify output 61 # -------------------------------------------- 44 # --------------------------------------------------------------------------- 62 # 45 # 63 # Most of build commands in Kbuild start with !! 46 # Normally, we echo the whole command before executing it. By making 64 # "quiet_cmd_*". If defined, the short log is !! 47 # that echo $($(quiet)$(cmd)), we now have the possibility to set 65 # that command is printed by default. !! 48 # $(quiet) to choose other forms of output instead, e.g. 66 # !! 49 # 67 # e.g.) !! 50 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 68 # quiet_cmd_depmod = DEPMOD $(MODLIB) !! 51 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 69 # cmd_depmod = $(srctree)/scripts/dep !! 52 # >> 53 # If $(quiet) is empty, the whole command will be printed. >> 54 # If it is set to "quiet_", only the short version will be printed. >> 55 # If it is set to "silent_", nothing will be printed at all, since >> 56 # the variable $(silent_cmd_cc_o_c) doesn't exist. 70 # 57 # 71 # A simple variant is to prefix commands with 58 # A simple variant is to prefix commands with $(Q) - that's useful 72 # for commands that shall be hidden in non-ver 59 # for commands that shall be hidden in non-verbose mode. 73 # 60 # 74 # $(Q)$(MAKE) $(build)=scripts/basic !! 61 # $(Q)ln $@ :< 75 # 62 # 76 # If KBUILD_VERBOSE contains 1, the whole comm !! 63 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 77 # If KBUILD_VERBOSE contains 2, the reason for !! 64 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 78 # 65 # 79 # To put more focus on warnings, be less verbo 66 # To put more focus on warnings, be less verbose as default 80 # Use 'make V=1' to see the full commands 67 # Use 'make V=1' to see the full commands 81 68 82 ifeq ("$(origin V)", "command line") 69 ifeq ("$(origin V)", "command line") 83 KBUILD_VERBOSE = $(V) 70 KBUILD_VERBOSE = $(V) 84 endif 71 endif >> 72 ifndef KBUILD_VERBOSE >> 73 KBUILD_VERBOSE = 0 >> 74 endif 85 75 86 quiet = quiet_ !! 76 ifeq ($(KBUILD_VERBOSE),1) 87 Q = @ << 88 << 89 ifneq ($(findstring 1, $(KBUILD_VERBOSE)),) << 90 quiet = 77 quiet = 91 Q = 78 Q = >> 79 else >> 80 quiet=quiet_ >> 81 Q = @ 92 endif 82 endif 93 83 94 # If the user is running make -s (silent mode) 84 # If the user is running make -s (silent mode), suppress echoing of 95 # commands 85 # commands 96 ifneq ($(findstring s,$(firstword -$(MAKEFLAGS << 97 quiet=silent_ << 98 override KBUILD_VERBOSE := << 99 endif << 100 << 101 export quiet Q KBUILD_VERBOSE << 102 86 103 # Call a source code checker (by default, "spa !! 87 ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) 104 # C compilation. !! 88 quiet=silent_ 105 # !! 89 tools_silent=s 106 # Use 'make C=1' to enable checking of only re << 107 # Use 'make C=2' to enable checking of *all* s << 108 # of whether they are re-compiled or not. << 109 # << 110 # See the file "Documentation/dev-tools/sparse << 111 # including where to get the "sparse" utility. << 112 << 113 ifeq ("$(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 90 endif 136 91 137 $(if $(word 2, $(KBUILD_EXTMOD)), \ !! 92 export quiet Q KBUILD_VERBOSE 138 $(error building multiple external mod << 139 << 140 $(foreach x, % :, $(if $(findstring $x, $(KBUI << 141 $(error module directory path cannot c << 142 << 143 # Remove trailing slashes << 144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) << 145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM << 146 endif << 147 << 148 export KBUILD_EXTMOD << 149 << 150 # backward compatibility << 151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC << 152 << 153 ifeq ("$(origin W)", "command line") << 154 KBUILD_EXTRA_WARN := $(W) << 155 endif << 156 << 157 export KBUILD_EXTRA_WARN << 158 93 159 # Kbuild will save output files in the current !! 94 # kbuild supports saving output files in a separate directory. 160 # This does not need to match to the root of t !! 95 # To locate output files in a separate directory two syntaxes are supported. 161 # !! 96 # In both cases the working directory must be the root of the kernel src. 162 # For example, you can do this: << 163 # << 164 # cd /dir/to/store/output/files; make -f /dir << 165 # << 166 # If you want to save output files in a differ << 167 # two syntaxes to specify it. << 168 # << 169 # 1) O= 97 # 1) O= 170 # Use "make O=dir/to/store/output/files/" 98 # Use "make O=dir/to/store/output/files/" 171 # 99 # 172 # 2) Set KBUILD_OUTPUT 100 # 2) Set KBUILD_OUTPUT 173 # Set the environment variable KBUILD_OUTPUT t !! 101 # Set the environment variable KBUILD_OUTPUT to point to the directory 174 # export KBUILD_OUTPUT=dir/to/store/output/fil !! 102 # where the output files shall be placed. >> 103 # export KBUILD_OUTPUT=dir/to/store/output/files/ >> 104 # make 175 # 105 # 176 # The O= assignment takes precedence over the 106 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 177 # variable. 107 # variable. 178 108 179 # Do we want to change the working directory? !! 109 # KBUILD_SRC is not intended to be used by the regular user (for now), >> 110 # it is set on invocation of make with KBUILD_OUTPUT or O= specified. >> 111 ifeq ($(KBUILD_SRC),) >> 112 >> 113 # OK, Make called in directory where kernel src resides >> 114 # Do we want to locate output files in a separate directory? 180 ifeq ("$(origin O)", "command line") 115 ifeq ("$(origin O)", "command line") 181 KBUILD_OUTPUT := $(O) 116 KBUILD_OUTPUT := $(O) 182 endif 117 endif 183 118 184 ifneq ($(KBUILD_OUTPUT),) !! 119 # That's our default target when none is given on the command line 185 # $(realpath ...) gets empty if the path does !! 120 PHONY := _all 186 $(shell mkdir -p "$(KBUILD_OUTPUT)") !! 121 _all: 187 # $(realpath ...) resolves symlinks << 188 abs_objtree := $(realpath $(KBUILD_OUTPUT)) << 189 $(if $(abs_objtree),,$(error failed to create << 190 endif # ifneq ($(KBUILD_OUTPUT),) << 191 << 192 ifneq ($(words $(subst :, ,$(abs_srctree))), 1 << 193 $(error source directory cannot contain spaces << 194 endif << 195 << 196 export sub_make_done := 1 << 197 122 198 endif # sub_make_done !! 123 # Cancel implicit rules on top Makefile >> 124 $(CURDIR)/Makefile Makefile: ; 199 125 200 ifeq ($(abs_objtree),$(CURDIR)) !! 126 ifneq ($(words $(subst :, ,$(CURDIR))), 1) 201 # Suppress "Entering directory ..." if we are !! 127 $(error main directory cannot contain spaces nor colons) 202 no-print-directory := --no-print-directory << 203 else << 204 # Recursion to show "Entering directory ..." << 205 need-sub-make := 1 << 206 endif 128 endif 207 129 208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 130 ifneq ($(KBUILD_OUTPUT),) 209 # If --no-print-directory is unset, recurse on !! 131 # check that the output directory actually exists 210 # You may end up recursing into __sub-make twi !! 132 saved-output := $(KBUILD_OUTPUT) 211 # behavior change in GNU Make 4.4.1. !! 133 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ 212 need-sub-make := 1 !! 134 && /bin/pwd) 213 endif !! 135 $(if $(KBUILD_OUTPUT),, \ 214 !! 136 $(error failed to create output directory "$(saved-output)")) 215 ifeq ($(need-sub-make),1) << 216 137 217 PHONY += $(MAKECMDGOALS) __sub-make !! 138 PHONY += $(MAKECMDGOALS) sub-make 218 139 219 $(filter-out $(this-makefile), $(MAKECMDGOALS) !! 140 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 220 @: 141 @: 221 142 222 # Invoke a second make in the output directory 143 # Invoke a second make in the output directory, passing relevant variables 223 __sub-make: !! 144 sub-make: 224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 145 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 225 -f $(abs_srctree)/Makefile $(MAKECMDGO !! 146 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 226 147 227 else # need-sub-make !! 148 # Leave processing to above invocation of make >> 149 skip-makefile := 1 >> 150 endif # ifneq ($(KBUILD_OUTPUT),) >> 151 endif # ifeq ($(KBUILD_SRC),) 228 152 229 # We process the rest of the Makefile if this 153 # We process the rest of the Makefile if this is the final invocation of make >> 154 ifeq ($(skip-makefile),) 230 155 231 ifeq ($(abs_srctree),$(abs_objtree)) !! 156 # Do not print "Entering directory ...", 232 # building in the source tree !! 157 # but we want to display it when entering to the output directory 233 srctree := . !! 158 # so that IDEs/editors are able to understand relative filenames. 234 building_out_of_srctree := !! 159 MAKEFLAGS += --no-print-directory 235 else << 236 ifeq ($(abs_srctree)/,$(dir $(abs_objt << 237 # building in a subdirectory o << 238 srctree := .. << 239 else << 240 srctree := $(abs_srctree) << 241 endif << 242 building_out_of_srctree := 1 << 243 endif << 244 << 245 ifneq ($(KBUILD_ABS_SRCTREE),) << 246 srctree := $(abs_srctree) << 247 endif << 248 160 249 objtree := . !! 161 # Call a source code checker (by default, "sparse") as part of the 250 !! 162 # C compilation. 251 VPATH := !! 163 # >> 164 # Use 'make C=1' to enable checking of only re-compiled files. >> 165 # Use 'make C=2' to enable checking of *all* source files, regardless >> 166 # of whether they are re-compiled or not. >> 167 # >> 168 # See the file "Documentation/dev-tools/sparse.rst" for more details, >> 169 # including where to get the "sparse" utility. 252 170 253 ifeq ($(KBUILD_EXTMOD),) !! 171 ifeq ("$(origin C)", "command line") 254 ifdef building_out_of_srctree !! 172 KBUILD_CHECKSRC = $(C) 255 VPATH := $(srctree) << 256 endif << 257 endif 173 endif 258 !! 174 ifndef KBUILD_CHECKSRC 259 export building_out_of_srctree srctree objtree !! 175 KBUILD_CHECKSRC = 0 260 << 261 # To make sure we do not include .config for a << 262 # catch them early, and hand them over to scri << 263 # It is allowed to specify more targets when c << 264 # mixing *config targets and build targets. << 265 # For example 'make oldconfig all'. << 266 # Detect when mixed targets is specified, and << 267 # of make so .config is not included in this c << 268 << 269 version_h := include/generated/uapi/linux/vers << 270 << 271 clean-targets := %clean mrproper cleandocs << 272 no-dot-config-targets := $(clean-targets) \ << 273 cscope gtags TAGS tag << 274 $(version_h) headers << 275 %asm-generic kernelve << 276 outputmakefile rustav << 277 no-sync-config-targets := $(no-dot-config-targ << 278 image_name << 279 single-targets := %.a %.i %.ko %.lds %.ll %.ls << 280 << 281 config-build := << 282 mixed-build := << 283 need-config := 1 << 284 may-sync-config := 1 << 285 single-build := << 286 << 287 ifneq ($(filter $(no-dot-config-targets), $(MA << 288 ifeq ($(filter-out $(no-dot-config-targets << 289 need-config := << 290 endif << 291 endif 176 endif 292 177 293 ifneq ($(filter $(no-sync-config-targets), $(M !! 178 # Use make M=dir to specify directory of external module to build 294 ifeq ($(filter-out $(no-sync-config-target !! 179 # Old syntax make ... SUBDIRS=$PWD is still supported 295 may-sync-config := !! 180 # Setting the environment variable KBUILD_EXTMOD take precedence 296 endif !! 181 ifdef SUBDIRS >> 182 KBUILD_EXTMOD ?= $(SUBDIRS) 297 endif 183 endif 298 184 299 need-compiler := $(may-sync-config) !! 185 ifeq ("$(origin M)", "command line") 300 !! 186 KBUILD_EXTMOD := $(M) 301 ifneq ($(KBUILD_EXTMOD),) << 302 may-sync-config := << 303 endif 187 endif 304 188 >> 189 # If building an external module we do not care about the all: rule >> 190 # but instead _all depend on modules >> 191 PHONY += all 305 ifeq ($(KBUILD_EXTMOD),) 192 ifeq ($(KBUILD_EXTMOD),) 306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 193 _all: all 307 config-build := 1 !! 194 else 308 ifneq ($(words $(MAKECMDGOALS)),1) !! 195 _all: modules 309 mixed-build := 1 << 310 endif << 311 endif << 312 endif << 313 << 314 # We cannot build single targets and the other << 315 ifneq ($(filter $(single-targets), $(MAKECMDGO << 316 single-build := 1 << 317 ifneq ($(filter-out $(single-targets), $(M << 318 mixed-build := 1 << 319 endif << 320 endif << 321 << 322 # For "make -j clean all", "make -j mrproper d << 323 ifneq ($(filter $(clean-targets),$(MAKECMDGOAL << 324 ifneq ($(filter-out $(clean-targets),$(MAK << 325 mixed-build := 1 << 326 endif << 327 endif 196 endif 328 197 329 # install and modules_install need also be pro !! 198 ifeq ($(KBUILD_SRC),) 330 ifneq ($(filter install,$(MAKECMDGOALS)),) !! 199 # building in the source tree 331 ifneq ($(filter modules_install,$(MAKECMDG !! 200 srctree := . 332 mixed-build := 1 !! 201 else 333 endif !! 202 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) >> 203 # building in a subdirectory of the source tree >> 204 srctree := .. >> 205 else >> 206 srctree := $(KBUILD_SRC) >> 207 endif 334 endif 208 endif >> 209 objtree := . >> 210 src := $(srctree) >> 211 obj := $(objtree) 335 212 336 ifdef mixed-build !! 213 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 337 # ============================================ << 338 # We're called with mixed targets (*config and << 339 # Handle them one by one. << 340 << 341 PHONY += $(MAKECMDGOALS) __build_one_by_one << 342 << 343 $(MAKECMDGOALS): __build_one_by_one << 344 @: << 345 << 346 __build_one_by_one: << 347 $(Q)set -e; \ << 348 for i in $(MAKECMDGOALS); do \ << 349 $(MAKE) -f $(srctree)/Makefile << 350 done << 351 << 352 else # !mixed-build << 353 214 354 include $(srctree)/scripts/Kbuild.include !! 215 export srctree objtree VPATH 355 216 356 # Read KERNELRELEASE from include/config/kerne !! 217 # SUBARCH tells the usermode build what the underlying arch is. That is set 357 KERNELRELEASE = $(call read-file, include/conf !! 218 # first, and if a usermode build is happening, the "ARCH=um" on the command 358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. !! 219 # line overrides the setting of ARCH below. If a native build is happening, 359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA !! 220 # then ARCH is assigned, getting whatever value it gets normally, and 360 !! 221 # SUBARCH is subsequently ignored. 361 include $(srctree)/scripts/subarch.include !! 222 >> 223 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ >> 224 -e s/sun4u/sparc64/ \ >> 225 -e s/arm.*/arm/ -e s/sa110/arm/ \ >> 226 -e s/s390x/s390/ -e s/parisc64/parisc/ \ >> 227 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ >> 228 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) 362 229 363 # Cross compiling and selecting different set 230 # Cross compiling and selecting different set of gcc/bin-utils 364 # -------------------------------------------- 231 # --------------------------------------------------------------------------- 365 # 232 # 366 # When performing cross compilation for other 233 # When performing cross compilation for other architectures ARCH shall be set 367 # to the target architecture. (See arch/* for 234 # to the target architecture. (See arch/* for the possibilities). 368 # ARCH can be set during invocation of make: 235 # ARCH can be set during invocation of make: 369 # make ARCH=arm64 !! 236 # make ARCH=ia64 370 # Another way is to have ARCH set in the envir 237 # Another way is to have ARCH set in the environment. 371 # The default ARCH is the host where make is e 238 # The default ARCH is the host where make is executed. 372 239 373 # CROSS_COMPILE specify the prefix used for al 240 # CROSS_COMPILE specify the prefix used for all executables used 374 # during compilation. Only gcc and related bin 241 # during compilation. Only gcc and related bin-utils executables 375 # are prefixed with $(CROSS_COMPILE). 242 # are prefixed with $(CROSS_COMPILE). 376 # CROSS_COMPILE can be set on the command line 243 # CROSS_COMPILE can be set on the command line 377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 244 # make CROSS_COMPILE=ia64-linux- 378 # Alternatively CROSS_COMPILE can be set in th 245 # Alternatively CROSS_COMPILE can be set in the environment. >> 246 # A third alternative is to store a setting in .config so that plain >> 247 # "make" in the configured kernel build directory always uses that. 379 # Default value for CROSS_COMPILE is not to pr 248 # Default value for CROSS_COMPILE is not to prefix executables 380 # Note: Some architectures assign CROSS_COMPIL 249 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 381 ARCH ?= $(SUBARCH) 250 ARCH ?= $(SUBARCH) >> 251 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) 382 252 383 # Architecture as present in compile.h 253 # Architecture as present in compile.h 384 UTS_MACHINE := $(ARCH) 254 UTS_MACHINE := $(ARCH) 385 SRCARCH := $(ARCH) 255 SRCARCH := $(ARCH) 386 256 387 # Additional ARCH settings for x86 257 # Additional ARCH settings for x86 388 ifeq ($(ARCH),i386) 258 ifeq ($(ARCH),i386) 389 SRCARCH := x86 259 SRCARCH := x86 390 endif 260 endif 391 ifeq ($(ARCH),x86_64) 261 ifeq ($(ARCH),x86_64) 392 SRCARCH := x86 262 SRCARCH := x86 393 endif 263 endif 394 264 395 # Additional ARCH settings for sparc 265 # Additional ARCH settings for sparc 396 ifeq ($(ARCH),sparc32) 266 ifeq ($(ARCH),sparc32) 397 SRCARCH := sparc 267 SRCARCH := sparc 398 endif 268 endif 399 ifeq ($(ARCH),sparc64) 269 ifeq ($(ARCH),sparc64) 400 SRCARCH := sparc 270 SRCARCH := sparc 401 endif 271 endif 402 272 403 # Additional ARCH settings for parisc !! 273 # Additional ARCH settings for sh 404 ifeq ($(ARCH),parisc64) !! 274 ifeq ($(ARCH),sh64) 405 SRCARCH := parisc !! 275 SRCARCH := sh 406 endif 276 endif 407 277 408 export cross_compiling := !! 278 # Additional ARCH settings for tile 409 ifneq ($(SRCARCH),$(SUBARCH)) !! 279 ifeq ($(ARCH),tilepro) 410 cross_compiling := 1 !! 280 SRCARCH := tile >> 281 endif >> 282 ifeq ($(ARCH),tilegx) >> 283 SRCARCH := tile 411 endif 284 endif 412 285 >> 286 # Where to locate arch specific headers >> 287 hdr-arch := $(SRCARCH) >> 288 413 KCONFIG_CONFIG ?= .config 289 KCONFIG_CONFIG ?= .config 414 export KCONFIG_CONFIG 290 export KCONFIG_CONFIG 415 291 416 # SHELL used by kbuild 292 # SHELL used by kbuild 417 CONFIG_SHELL := sh !! 293 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ >> 294 else if [ -x /bin/bash ]; then echo /bin/bash; \ >> 295 else echo sh; fi ; fi) >> 296 >> 297 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS) >> 298 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS) >> 299 HOST_LFS_LIBS := $(shell getconf LFS_LIBS) >> 300 >> 301 HOSTCC = gcc >> 302 HOSTCXX = g++ >> 303 HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \ >> 304 -fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) >> 305 HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) >> 306 HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) >> 307 HOST_LOADLIBES := $(HOST_LFS_LIBS) >> 308 >> 309 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) >> 310 HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ >> 311 -Wno-missing-field-initializers -fno-delete-null-pointer-checks >> 312 endif >> 313 >> 314 # Decide whether to build built-in, modular, or both. >> 315 # Normally, just do built-in. 418 316 419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS !! 317 KBUILD_MODULES := 420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG !! 318 KBUILD_BUILTIN := 1 421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d !! 319 >> 320 # If we have only "make modules", don't compile built-in objects. >> 321 # When we're building modules with modversions, we need to consider >> 322 # the built-in objects during the descend as well, in order to >> 323 # make sure the checksums are up to date before we record them. 422 324 423 ifneq ($(LLVM),) !! 325 ifeq ($(MAKECMDGOALS),modules) 424 ifneq ($(filter %/,$(LLVM)),) !! 326 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 425 LLVM_PREFIX := $(LLVM) << 426 else ifneq ($(filter -%,$(LLVM)),) << 427 LLVM_SUFFIX := $(LLVM) << 428 endif 327 endif 429 328 430 HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) !! 329 # If we have "make <whatever> modules", compile modules 431 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX) !! 330 # in addition to whatever we do anyway. 432 else !! 331 # Just "make" or "make all" shall build modules as well 433 HOSTCC = gcc !! 332 434 HOSTCXX = g++ !! 333 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) >> 334 KBUILD_MODULES := 1 435 endif 335 endif 436 HOSTRUSTC = rustc << 437 HOSTPKG_CONFIG = pkg-config << 438 336 439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto !! 337 ifeq ($(MAKECMDGOALS),) 440 -O2 -fomit-frame-poin !! 338 KBUILD_MODULES := 1 441 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) !! 339 endif 442 KBUILD_USERLDFLAGS := $(USERLDFLAGS) !! 340 443 !! 341 export KBUILD_MODULES KBUILD_BUILTIN 444 # These flags apply to all Rust code in the tr !! 342 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 445 # host programs. !! 343 446 export rust_common_flags := --edition=2021 \ !! 344 # We need some generic definitions (do not try to remake the file). 447 -Zbinary_dep_depin !! 345 scripts/Kbuild.include: ; 448 -Astable_features !! 346 include scripts/Kbuild.include 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 << 469 KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOST << 470 347 471 # Make variables (CC, etc...) 348 # Make variables (CC, etc...) 472 CPP = $(CC) -E !! 349 AS = $(CROSS_COMPILE)as 473 ifneq ($(LLVM),) << 474 CC = $(LLVM_PREFIX)clang$(LLVM_SU << 475 LD = $(LLVM_PREFIX)ld.lld$(LLVM_S << 476 AR = $(LLVM_PREFIX)llvm-ar$(LLVM_ << 477 NM = $(LLVM_PREFIX)llvm-nm$(LLVM_ << 478 OBJCOPY = $(LLVM_PREFIX)llvm-objcopy$( << 479 OBJDUMP = $(LLVM_PREFIX)llvm-objdump$( << 480 READELF = $(LLVM_PREFIX)llvm-readelf$( << 481 STRIP = $(LLVM_PREFIX)llvm-strip$(LL << 482 else << 483 CC = $(CROSS_COMPILE)gcc << 484 LD = $(CROSS_COMPILE)ld 350 LD = $(CROSS_COMPILE)ld >> 351 CC = $(CROSS_COMPILE)gcc >> 352 CPP = $(CC) -E 485 AR = $(CROSS_COMPILE)ar 353 AR = $(CROSS_COMPILE)ar 486 NM = $(CROSS_COMPILE)nm 354 NM = $(CROSS_COMPILE)nm >> 355 STRIP = $(CROSS_COMPILE)strip 487 OBJCOPY = $(CROSS_COMPILE)objcopy 356 OBJCOPY = $(CROSS_COMPILE)objcopy 488 OBJDUMP = $(CROSS_COMPILE)objdump 357 OBJDUMP = $(CROSS_COMPILE)objdump 489 READELF = $(CROSS_COMPILE)readelf << 490 STRIP = $(CROSS_COMPILE)strip << 491 endif << 492 RUSTC = rustc << 493 RUSTDOC = rustdoc << 494 RUSTFMT = rustfmt << 495 CLIPPY_DRIVER = clippy-driver << 496 BINDGEN = bindgen << 497 PAHOLE = pahole << 498 RESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve << 499 LEX = flex << 500 YACC = bison << 501 AWK = awk 358 AWK = awk >> 359 GENKSYMS = scripts/genksyms/genksyms 502 INSTALLKERNEL := installkernel 360 INSTALLKERNEL := installkernel >> 361 DEPMOD = /sbin/depmod 503 PERL = perl 362 PERL = perl 504 PYTHON3 = python3 !! 363 PYTHON = python 505 CHECK = sparse 364 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 << 514 365 515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC 366 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 516 -Wbitwise -Wno-return-void - !! 367 -Wbitwise -Wno-return-void $(CF) 517 NOSTDINC_FLAGS := !! 368 NOSTDINC_FLAGS = 518 CFLAGS_MODULE = 369 CFLAGS_MODULE = 519 RUSTFLAGS_MODULE = << 520 AFLAGS_MODULE = 370 AFLAGS_MODULE = 521 LDFLAGS_MODULE = 371 LDFLAGS_MODULE = 522 CFLAGS_KERNEL = 372 CFLAGS_KERNEL = 523 RUSTFLAGS_KERNEL = << 524 AFLAGS_KERNEL = 373 AFLAGS_KERNEL = 525 LDFLAGS_vmlinux = 374 LDFLAGS_vmlinux = >> 375 CFLAGS_GCOV := -fprofile-arcs -ftest-coverage -fno-tree-loop-im $(call cc-disable-warning,maybe-uninitialized,) >> 376 CFLAGS_KCOV := $(call cc-option,-fsanitize-coverage=trace-pc,) >> 377 526 378 527 # Use USERINCLUDE when you must reference the 379 # Use USERINCLUDE when you must reference the UAPI directories only. 528 USERINCLUDE := \ 380 USERINCLUDE := \ 529 -I$(srctree)/arch/$(SRCARCH)/i !! 381 -I$(srctree)/arch/$(hdr-arch)/include/uapi \ 530 -I$(objtree)/arch/$(SRCARCH)/i !! 382 -I$(objtree)/arch/$(hdr-arch)/include/generated/uapi \ 531 -I$(srctree)/include/uapi \ 383 -I$(srctree)/include/uapi \ 532 -I$(objtree)/include/generated 384 -I$(objtree)/include/generated/uapi \ 533 -include $(srctree)/include/li << 534 -include $(srctree)/include/li 385 -include $(srctree)/include/linux/kconfig.h 535 386 536 # Use LINUXINCLUDE when you must reference the 387 # Use LINUXINCLUDE when you must reference the include/ directory. 537 # Needed to be compatible with the O= option 388 # Needed to be compatible with the O= option 538 LINUXINCLUDE := \ 389 LINUXINCLUDE := \ 539 -I$(srctree)/arch/$(SRCARCH)/i !! 390 -I$(srctree)/arch/$(hdr-arch)/include \ 540 -I$(objtree)/arch/$(SRCARCH)/i !! 391 -I$(objtree)/arch/$(hdr-arch)/include/generated \ 541 $(if $(building_out_of_srctree !! 392 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 542 -I$(objtree)/include \ 393 -I$(objtree)/include \ 543 $(USERINCLUDE) 394 $(USERINCLUDE) 544 395 545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE !! 396 KBUILD_CPPFLAGS := -D__KERNEL__ 546 397 547 KBUILD_CFLAGS := !! 398 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 548 KBUILD_CFLAGS += -std=gnu11 !! 399 -fno-strict-aliasing -fno-common -fshort-wchar \ 549 KBUILD_CFLAGS += -fshort-wchar !! 400 -Werror-implicit-function-declaration \ 550 KBUILD_CFLAGS += -funsigned-char !! 401 -Wno-format-security \ 551 KBUILD_CFLAGS += -fno-common !! 402 -std=gnu89 $(call cc-option,-fno-PIE) 552 KBUILD_CFLAGS += -fno-PIE << 553 KBUILD_CFLAGS += -fno-strict-aliasing << 554 403 555 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 << 563 404 564 KBUILD_AFLAGS_KERNEL := 405 KBUILD_AFLAGS_KERNEL := 565 KBUILD_CFLAGS_KERNEL := 406 KBUILD_CFLAGS_KERNEL := 566 KBUILD_RUSTFLAGS_KERNEL := !! 407 KBUILD_AFLAGS := -D__ASSEMBLY__ $(call cc-option,-fno-PIE) 567 KBUILD_AFLAGS_MODULE := -DMODULE 408 KBUILD_AFLAGS_MODULE := -DMODULE 568 KBUILD_CFLAGS_MODULE := -DMODULE 409 KBUILD_CFLAGS_MODULE := -DMODULE 569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE !! 410 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 570 KBUILD_LDFLAGS_MODULE := << 571 KBUILD_LDFLAGS := << 572 CLANG_FLAGS := << 573 << 574 ifeq ($(KBUILD_CLIPPY),1) << 575 RUSTC_OR_CLIPPY_QUIET := CLIPPY << 576 RUSTC_OR_CLIPPY = $(CLIPPY_DRIVER) << 577 else << 578 RUSTC_OR_CLIPPY_QUIET := RUSTC << 579 RUSTC_OR_CLIPPY = $(RUSTC) << 580 endif << 581 411 582 ifdef RUST_LIB_SRC !! 412 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 583 export RUST_LIB_SRC !! 413 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 584 endif !! 414 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 585 << 586 # Allows the usage of unstable features in sta << 587 export RUSTC_BOOTSTRAP := 1 << 588 415 589 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K !! 416 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 590 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q !! 417 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 591 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS !! 418 export CPP AR NM STRIP OBJCOPY OBJDUMP HOSTLDFLAGS HOST_LOADLIBES 592 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF !! 419 export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE 593 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ !! 420 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 594 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD << 595 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS << 596 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS << 597 421 598 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC !! 422 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 599 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU !! 423 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KCOV CFLAGS_KASAN CFLAGS_UBSAN 600 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF << 601 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 424 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 602 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 425 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 603 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 426 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL >> 427 export KBUILD_ARFLAGS >> 428 >> 429 # When compiling out-of-tree modules, put MODVERDIR in the module >> 430 # tree rather than in the kernel tree. The kernel tree might >> 431 # even be read-only. >> 432 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 604 433 605 # Files to ignore in find ... statements 434 # Files to ignore in find ... statements 606 435 607 export RCS_FIND_IGNORE := \( -name SCCS -o -na 436 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 608 -name CVS -o -name . 437 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 609 -prune -o 438 -prune -o >> 439 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ >> 440 --exclude CVS --exclude .pc --exclude .hg --exclude .git 610 441 611 # ============================================ 442 # =========================================================================== 612 # Rules shared between *config targets and bui 443 # Rules shared between *config targets and build targets 613 444 614 # Basic helpers built in scripts/basic/ 445 # Basic helpers built in scripts/basic/ 615 PHONY += scripts_basic 446 PHONY += scripts_basic 616 scripts_basic: 447 scripts_basic: 617 $(Q)$(MAKE) $(build)=scripts/basic 448 $(Q)$(MAKE) $(build)=scripts/basic >> 449 $(Q)rm -f .tmp_quiet_recordmcount >> 450 >> 451 # To avoid any implicit rule to kick in, define an empty command. >> 452 scripts/basic/%: scripts_basic ; 618 453 619 PHONY += outputmakefile 454 PHONY += outputmakefile 620 ifdef building_out_of_srctree << 621 # Before starting out-of-tree build, make sure << 622 # outputmakefile generates a Makefile in the o 455 # outputmakefile generates a Makefile in the output directory, if using a 623 # separate output directory. This allows conve 456 # separate output directory. This allows convenient use of make in the 624 # output directory. 457 # output directory. 625 # At the same time when output Makefile genera << 626 # ignore whole output directory << 627 << 628 quiet_cmd_makefile = GEN Makefile << 629 cmd_makefile = { \ << 630 echo "\# Automatically generated by $( << 631 echo "include $(srctree)/Makefile"; \ << 632 } > Makefile << 633 << 634 outputmakefile: 458 outputmakefile: 635 @if [ -f $(srctree)/.config -o \ !! 459 ifneq ($(KBUILD_SRC),) 636 -d $(srctree)/include/config << 637 -d $(srctree)/arch/$(SRCARCH) << 638 echo >&2 "***"; \ << 639 echo >&2 "*** The source tree << 640 echo >&2 "*** in $(abs_srctree << 641 echo >&2 "***"; \ << 642 false; \ << 643 fi << 644 $(Q)ln -fsn $(srctree) source 460 $(Q)ln -fsn $(srctree) source 645 $(call cmd,makefile) !! 461 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 646 $(Q)test -e .gitignore || \ !! 462 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 647 { echo "# this is build directory, ign << 648 endif 463 endif 649 464 650 # The expansion should be delayed until arch/$ !! 465 # Support for using generic headers in asm-generic 651 # Some architectures define CROSS_COMPILE in a !! 466 PHONY += asm-generic uapi-asm-generic 652 # CC_VERSION_TEXT is referenced from Kconfig ( !! 467 asm-generic: uapi-asm-generic 653 # and from include/config/auto.conf.cmd to det !! 468 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 654 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC !! 469 src=asm obj=arch/$(SRCARCH)/include/generated/asm >> 470 uapi-asm-generic: >> 471 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ >> 472 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm >> 473 >> 474 # To make sure we do not include .config for any of the *config targets >> 475 # catch them early, and hand them over to scripts/kconfig/Makefile >> 476 # It is allowed to specify more targets when calling make, including >> 477 # mixing *config targets and build targets. >> 478 # For example 'make oldconfig all'. >> 479 # Detect when mixed targets is specified, and make a second invocation >> 480 # of make so .config is not included in this case either (for *config). >> 481 >> 482 version_h := include/generated/uapi/linux/version.h >> 483 old_version_h := include/linux/version.h >> 484 >> 485 no-dot-config-targets := clean mrproper distclean \ >> 486 cscope gtags TAGS tags help% %docs check% coccicheck \ >> 487 $(version_h) headers_% archheaders archscripts \ >> 488 kernelversion %src-pkg >> 489 >> 490 config-targets := 0 >> 491 mixed-targets := 0 >> 492 dot-config := 1 655 493 656 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), !! 494 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 657 include $(srctree)/scripts/Makefile.clang !! 495 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) >> 496 dot-config := 0 >> 497 endif 658 endif 498 endif 659 499 660 # Include this also for config targets because !! 500 ifeq ($(KBUILD_EXTMOD),) 661 # cc-cross-prefix to determine CROSS_COMPILE. !! 501 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 662 ifdef need-compiler !! 502 config-targets := 1 663 include $(srctree)/scripts/Makefile.compiler !! 503 ifneq ($(words $(MAKECMDGOALS)),1) >> 504 mixed-targets := 1 >> 505 endif >> 506 endif 664 endif 507 endif >> 508 # install and modules_install need also be processed one by one >> 509 ifneq ($(filter install,$(MAKECMDGOALS)),) >> 510 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) >> 511 mixed-targets := 1 >> 512 endif >> 513 endif >> 514 >> 515 ifeq ($(mixed-targets),1) >> 516 # =========================================================================== >> 517 # We're called with mixed targets (*config and build targets). >> 518 # Handle them one by one. >> 519 >> 520 PHONY += $(MAKECMDGOALS) __build_one_by_one 665 521 666 ifdef config-build !! 522 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one >> 523 @: >> 524 >> 525 __build_one_by_one: >> 526 $(Q)set -e; \ >> 527 for i in $(MAKECMDGOALS); do \ >> 528 $(MAKE) -f $(srctree)/Makefile $$i; \ >> 529 done >> 530 >> 531 else >> 532 ifeq ($(config-targets),1) 667 # ============================================ 533 # =========================================================================== 668 # *config targets only - make sure prerequisit 534 # *config targets only - make sure prerequisites are updated, and descend 669 # in scripts/kconfig to make the *config targe 535 # in scripts/kconfig to make the *config target 670 536 671 # Read arch-specific Makefile to set KBUILD_DE !! 537 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 672 # KBUILD_DEFCONFIG may point out an alternativ 538 # KBUILD_DEFCONFIG may point out an alternative default configuration 673 # used for 'make defconfig' 539 # used for 'make defconfig' 674 include $(srctree)/arch/$(SRCARCH)/Makefile !! 540 include arch/$(SRCARCH)/Makefile 675 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS !! 541 export KBUILD_DEFCONFIG KBUILD_KCONFIG 676 542 677 config: outputmakefile scripts_basic FORCE !! 543 config: scripts_basic outputmakefile FORCE 678 $(Q)$(MAKE) $(build)=scripts/kconfig $ 544 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 679 545 680 %config: outputmakefile scripts_basic FORCE !! 546 %config: scripts_basic outputmakefile FORCE 681 $(Q)$(MAKE) $(build)=scripts/kconfig $ 547 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 682 548 683 else #!config-build !! 549 else 684 # ============================================ 550 # =========================================================================== 685 # Build targets only - this includes vmlinux, !! 551 # Build targets only - this includes vmlinux, arch specific targets, clean 686 # targets and others. In general all targets e 552 # targets and others. In general all targets except *config targets. 687 553 688 # If building an external module we do not car << 689 # but instead __all depend on modules << 690 PHONY += all << 691 ifeq ($(KBUILD_EXTMOD),) 554 ifeq ($(KBUILD_EXTMOD),) 692 __all: all !! 555 # Additional helpers built in scripts/ 693 else !! 556 # Carefully list dependencies so we do not try to build scripts twice 694 __all: modules !! 557 # in parallel 695 endif !! 558 PHONY += scripts >> 559 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ >> 560 asm-generic gcc-plugins >> 561 $(Q)$(MAKE) $(build)=$(@) 696 562 697 targets := !! 563 # Objects we will link into vmlinux / subdirs we need to visit >> 564 init-y := init/ >> 565 drivers-y := drivers/ sound/ firmware/ >> 566 net-y := net/ >> 567 libs-y := lib/ >> 568 core-y := usr/ >> 569 virt-y := virt/ >> 570 endif # KBUILD_EXTMOD 698 571 699 # Decide whether to build built-in, modular, o !! 572 ifeq ($(dot-config),1) 700 # Normally, just do built-in. !! 573 # Read in config >> 574 -include include/config/auto.conf 701 575 702 KBUILD_MODULES := !! 576 ifeq ($(KBUILD_EXTMOD),) 703 KBUILD_BUILTIN := 1 !! 577 # Read in dependencies to all Kconfig* files, make sure to run >> 578 # oldconfig if changes are detected. >> 579 -include include/config/auto.conf.cmd >> 580 >> 581 # To avoid any implicit rule to kick in, define an empty command >> 582 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; >> 583 >> 584 # If .config is newer than include/config/auto.conf, someone tinkered >> 585 # with it and forgot to run make oldconfig. >> 586 # if auto.conf.cmd is missing then we are probably in a cleaned tree so >> 587 # we execute the config step to be sure to catch updated Kconfig files >> 588 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd >> 589 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig >> 590 else >> 591 # external modules needs include/generated/autoconf.h and include/config/auto.conf >> 592 # but do not care if they are up-to-date. Use auto.conf to trigger the test >> 593 PHONY += include/config/auto.conf 704 594 705 # If we have only "make modules", don't compil !! 595 include/config/auto.conf: 706 ifeq ($(MAKECMDGOALS),modules) !! 596 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 707 KBUILD_BUILTIN := !! 597 echo >&2; \ 708 endif !! 598 echo >&2 " ERROR: Kernel configuration is invalid."; \ >> 599 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ >> 600 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ >> 601 echo >&2 ; \ >> 602 /bin/false) 709 603 710 # If we have "make <whatever> modules", compil !! 604 endif # KBUILD_EXTMOD 711 # in addition to whatever we do anyway. << 712 # Just "make" or "make all" shall build module << 713 605 714 ifneq ($(filter all modules nsdeps %compile_co !! 606 else 715 KBUILD_MODULES := 1 !! 607 # Dummy target needed, because used as prerequisite 716 endif !! 608 include/config/auto.conf: ; >> 609 endif # $(dot-config) 717 610 718 ifeq ($(MAKECMDGOALS),) !! 611 # For the kernel to actually contain only the needed exported symbols, >> 612 # we have to build modules as well to determine what those symbols are. >> 613 # (this can be evaluated only once include/config/auto.conf has been included) >> 614 ifdef CONFIG_TRIM_UNUSED_KSYMS 719 KBUILD_MODULES := 1 615 KBUILD_MODULES := 1 720 endif 616 endif 721 617 722 export KBUILD_MODULES KBUILD_BUILTIN << 723 << 724 ifdef need-config << 725 include include/config/auto.conf << 726 endif << 727 << 728 ifeq ($(KBUILD_EXTMOD),) << 729 # Objects we will link into vmlinux / subdirs << 730 core-y := << 731 drivers-y := << 732 libs-y := lib/ << 733 endif # KBUILD_EXTMOD << 734 << 735 # The all: target is the default when no targe 618 # The all: target is the default when no target is given on the 736 # command line. 619 # command line. 737 # This allow a user to issue only 'make' to bu 620 # This allow a user to issue only 'make' to build a kernel including modules 738 # Defaults to vmlinux, but the arch makefile u 621 # Defaults to vmlinux, but the arch makefile usually adds further targets 739 all: vmlinux 622 all: vmlinux 740 623 741 CFLAGS_GCOV := -fprofile-arcs -ftest-cover !! 624 # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default 742 ifdef CONFIG_CC_IS_GCC !! 625 # values of the respective KBUILD_* variables 743 CFLAGS_GCOV += -fno-tree-loop-im !! 626 ARCH_CPPFLAGS := >> 627 ARCH_AFLAGS := >> 628 ARCH_CFLAGS := >> 629 include arch/$(SRCARCH)/Makefile >> 630 >> 631 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) >> 632 KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) >> 633 KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) >> 634 KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) >> 635 KBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context) >> 636 >> 637 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE >> 638 KBUILD_CFLAGS += $(call cc-option,-Oz,-Os) >> 639 KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) >> 640 else >> 641 ifdef CONFIG_PROFILE_ALL_BRANCHES >> 642 KBUILD_CFLAGS += -O2 $(call cc-disable-warning,maybe-uninitialized,) >> 643 else >> 644 KBUILD_CFLAGS += -O2 744 endif 645 endif 745 export CFLAGS_GCOV << 746 << 747 # The arch Makefiles can override CC_FLAGS_FTR << 748 ifdef CONFIG_FUNCTION_TRACER << 749 CC_FLAGS_FTRACE := -pg << 750 endif 646 endif 751 647 752 include $(srctree)/arch/$(SRCARCH)/Makefile !! 648 KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, \ 753 !! 649 $(call cc-disable-warning,maybe-uninitialized,)) 754 ifdef need-config << 755 ifdef may-sync-config << 756 # Read in dependencies to all Kconfig* files, << 757 # changes are detected. This should be include << 758 # because some architectures define CROSS_COMP << 759 include include/config/auto.conf.cmd << 760 << 761 $(KCONFIG_CONFIG): << 762 @echo >&2 '***' << 763 @echo >&2 '*** Configuration file "$@" << 764 @echo >&2 '***' << 765 @echo >&2 '*** Please run some configu << 766 @echo >&2 '*** "make menuconfig" or "m << 767 @echo >&2 '***' << 768 @/bin/false << 769 << 770 # The actual configuration files used during t << 771 # include/generated/ and include/config/. Upda << 772 # include/config/auto.conf (which mirrors .con << 773 # << 774 # This exploits the 'multi-target pattern rule << 775 # The syncconfig should be executed only once << 776 # (Note: use the grouped target '&:' when we b << 777 # << 778 # Do not use $(call cmd,...) here. That would << 779 # so you cannot notice that Kconfig is waiting << 780 %/config/auto.conf %/config/auto.conf.cmd %/ge << 781 $(Q)$(kecho) " SYNC $@" << 782 $(Q)$(MAKE) -f $(srctree)/Makefile syn << 783 else # !may-sync-config << 784 # External modules and some install targets ne << 785 # and include/config/auto.conf but do not care << 786 # Use auto.conf to trigger the test << 787 PHONY += include/config/auto.conf << 788 << 789 include/config/auto.conf: << 790 @test -e include/generated/autoconf.h << 791 echo >&2; << 792 echo >&2 " ERROR: Kernel configuratio << 793 echo >&2 " include/generated/a << 794 echo >&2 " Run 'make oldconfig << 795 echo >&2 ; << 796 /bin/false) << 797 << 798 endif # may-sync-config << 799 endif # need-config << 800 << 801 KBUILD_CFLAGS += -fno-delete-null-pointer-ch << 802 << 803 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE << 804 KBUILD_CFLAGS += -O2 << 805 KBUILD_RUSTFLAGS += -Copt-level=2 << 806 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE << 807 KBUILD_CFLAGS += -Os << 808 KBUILD_RUSTFLAGS += -Copt-level=s << 809 endif << 810 << 811 # Always set `debug-assertions` and `overflow- << 812 # depends on `opt-level` and `debug-assertions << 813 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( << 814 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C << 815 650 816 # Tell gcc to never replace conditional load w 651 # Tell gcc to never replace conditional load with a non-conditional one 817 ifdef CONFIG_CC_IS_GCC << 818 # gcc-10 renamed --param=allow-store-data-race << 819 # -fno-allow-store-data-races. << 820 KBUILD_CFLAGS += $(call cc-option,--param=al 652 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 821 KBUILD_CFLAGS += $(call cc-option,-fno-allow !! 653 >> 654 # check for 'asm goto' >> 655 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y) >> 656 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO >> 657 KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO 822 endif 658 endif 823 659 >> 660 include scripts/Makefile.gcc-plugins >> 661 824 ifdef CONFIG_READABLE_ASM 662 ifdef CONFIG_READABLE_ASM 825 # Disable optimizations that make assembler li 663 # Disable optimizations that make assembler listings hard to read. 826 # reorder blocks reorders the control in the f 664 # reorder blocks reorders the control in the function 827 # ipa clone creates specialized cloned functio 665 # ipa clone creates specialized cloned functions 828 # partial inlining inlines only parts of funct 666 # partial inlining inlines only parts of functions 829 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- !! 667 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ >> 668 $(call cc-option,-fno-ipa-cp-clone,) \ >> 669 $(call cc-option,-fno-partial-inlining) 830 endif 670 endif 831 671 832 stackp-flags-y !! 672 ifneq ($(CONFIG_FRAME_WARN),0) 833 stackp-flags-$(CONFIG_STACKPROTECTOR) !! 673 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 834 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) !! 674 endif 835 675 836 KBUILD_CFLAGS += $(stackp-flags-y) !! 676 # This selects the stack protector compiler flag. Testing it is delayed >> 677 # until after .config has been reprocessed, in the prepare-compiler-check >> 678 # target. >> 679 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR >> 680 stackp-flag := -fstack-protector >> 681 stackp-name := REGULAR >> 682 else >> 683 ifdef CONFIG_CC_STACKPROTECTOR_STRONG >> 684 stackp-flag := -fstack-protector-strong >> 685 stackp-name := STRONG >> 686 else >> 687 # Force off for distro compilers that enable stack protector by default. >> 688 stackp-flag := $(call cc-option, -fno-stack-protector) >> 689 endif >> 690 endif >> 691 # Find arch-specific stack protector compiler sanity-checking script. >> 692 ifdef CONFIG_CC_STACKPROTECTOR >> 693 stackp-path := $(srctree)/scripts/gcc-$(SRCARCH)_$(BITS)-has-stack-protector.sh >> 694 stackp-check := $(wildcard $(stackp-path)) >> 695 endif >> 696 KBUILD_CFLAGS += $(stackp-flag) >> 697 >> 698 ifeq ($(cc-name),clang) >> 699 ifneq ($(CROSS_COMPILE),) >> 700 CLANG_TARGET := -target $(notdir $(CROSS_COMPILE:%-=%)) >> 701 GCC_TOOLCHAIN := $(realpath $(dir $(shell which $(LD)))/..) >> 702 endif >> 703 ifneq ($(GCC_TOOLCHAIN),) >> 704 CLANG_GCC_TC := -gcc-toolchain $(GCC_TOOLCHAIN) >> 705 endif >> 706 KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) >> 707 KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) >> 708 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) >> 709 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) >> 710 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) >> 711 KBUILD_CFLAGS += $(call cc-disable-warning, gnu) >> 712 KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) >> 713 # Quiet clang warning: comparison of unsigned expression < 0 is always false >> 714 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) >> 715 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the >> 716 # source of a reference will be _MergedGlobals and not on of the whitelisted names. >> 717 # See modpost pattern 2 >> 718 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) >> 719 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) >> 720 KBUILD_CFLAGS += $(call cc-option, -no-integrated-as) >> 721 KBUILD_AFLAGS += $(call cc-option, -no-integrated-as) >> 722 else 837 723 838 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning !! 724 # These warnings generated too much noise in a regular build. 839 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) !! 725 # Use make W=1 to enable them (see scripts/Makefile.extrawarn) >> 726 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) >> 727 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) >> 728 endif 840 729 841 ifdef CONFIG_FRAME_POINTER 730 ifdef CONFIG_FRAME_POINTER 842 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 731 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 843 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y << 844 else 732 else 845 # Some targets (ARM with Thumb2, for example), 733 # Some targets (ARM with Thumb2, for example), can't be built with frame 846 # pointers. For those, we don't have FUNCTION 734 # pointers. For those, we don't have FUNCTION_TRACER automatically 847 # select FRAME_POINTER. However, FUNCTION_TRA 735 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 848 # incompatible with -fomit-frame-pointer with 736 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 849 # -fomit-frame-pointer with FUNCTION_TRACER. 737 # -fomit-frame-pointer with FUNCTION_TRACER. 850 # In the Rust target specification, "frame-poi << 851 # to "may-omit". << 852 ifndef CONFIG_FUNCTION_TRACER 738 ifndef CONFIG_FUNCTION_TRACER 853 KBUILD_CFLAGS += -fomit-frame-pointer 739 KBUILD_CFLAGS += -fomit-frame-pointer 854 endif 740 endif 855 endif 741 endif 856 742 857 # Initialize all stack variables with a 0xAA p !! 743 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) 858 ifdef CONFIG_INIT_STACK_ALL_PATTERN << 859 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat << 860 endif << 861 744 862 # Initialize all stack variables with a zero v !! 745 ifdef CONFIG_DEBUG_INFO 863 ifdef CONFIG_INIT_STACK_ALL_ZERO !! 746 ifdef CONFIG_DEBUG_INFO_SPLIT 864 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer !! 747 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) 865 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER !! 748 else 866 # https://github.com/llvm/llvm-project/issues/ !! 749 KBUILD_CFLAGS += -g 867 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi << 868 export CC_AUTO_VAR_INIT_ZERO_ENABLER << 869 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA << 870 endif 750 endif >> 751 KBUILD_AFLAGS += -Wa,-gdwarf-2 >> 752 endif >> 753 ifdef CONFIG_DEBUG_INFO_DWARF4 >> 754 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) 871 endif 755 endif 872 756 873 # While VLAs have been removed, GCC produces u !! 757 ifdef CONFIG_DEBUG_INFO_REDUCED 874 # for the randomize_kstack_offset feature. Dis !! 758 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 875 KBUILD_CFLAGS += $(call cc-option, -fno-stac !! 759 $(call cc-option,-fno-var-tracking) 876 << 877 # Clear used registers at func exit (to reduce << 878 ifdef CONFIG_ZERO_CALL_USED_REGS << 879 KBUILD_CFLAGS += -fzero-call-used-regs=used- << 880 endif 760 endif 881 761 882 ifdef CONFIG_FUNCTION_TRACER 762 ifdef CONFIG_FUNCTION_TRACER 883 ifdef CONFIG_FTRACE_MCOUNT_USE_CC !! 763 ifndef CC_FLAGS_FTRACE 884 CC_FLAGS_FTRACE += -mrecord-mcount !! 764 CC_FLAGS_FTRACE := -pg 885 ifdef CONFIG_HAVE_NOP_MCOUNT << 886 ifeq ($(call cc-option-yn, -mnop-mcount),y << 887 CC_FLAGS_FTRACE += -mnop-mcount << 888 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 889 endif << 890 endif << 891 endif << 892 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL << 893 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT << 894 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 895 endif << 896 endif << 897 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT << 898 ifdef CONFIG_HAVE_C_RECORDMCOUNT << 899 BUILD_C_RECORDMCOUNT := y << 900 export BUILD_C_RECORDMCOUNT << 901 endif << 902 endif 765 endif >> 766 export CC_FLAGS_FTRACE 903 ifdef CONFIG_HAVE_FENTRY 767 ifdef CONFIG_HAVE_FENTRY 904 # s390-linux-gnu-gcc did not support -mfentr !! 768 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) 905 ifeq ($(call cc-option-yn, -mfentry),y) !! 769 endif 906 CC_FLAGS_FTRACE += -mfentry !! 770 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY) 907 CC_FLAGS_USING += -DCC_USING_FENTRY !! 771 KBUILD_AFLAGS += $(CC_USING_FENTRY) 908 endif !! 772 ifdef CONFIG_DYNAMIC_FTRACE >> 773 ifdef CONFIG_HAVE_C_RECORDMCOUNT >> 774 BUILD_C_RECORDMCOUNT := y >> 775 export BUILD_C_RECORDMCOUNT >> 776 endif 909 endif 777 endif 910 export CC_FLAGS_FTRACE << 911 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA << 912 KBUILD_AFLAGS += $(CC_FLAGS_USING) << 913 endif 778 endif 914 779 915 # We trigger additional mismatches with less i 780 # We trigger additional mismatches with less inlining 916 ifdef CONFIG_DEBUG_SECTION_MISMATCH 781 ifdef CONFIG_DEBUG_SECTION_MISMATCH 917 KBUILD_CFLAGS += -fno-inline-functions-called- !! 782 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 918 endif 783 endif 919 784 920 # `rustc`'s `-Zfunction-sections` applies to d << 921 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 785 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 922 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f !! 786 KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,) 923 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections !! 787 KBUILD_CFLAGS += $(call cc-option,-fdata-sections,) 924 LDFLAGS_vmlinux += --gc-sections << 925 endif 788 endif 926 789 927 ifdef CONFIG_SHADOW_CALL_STACK !! 790 # arch Makefile may override CC so keep this after arch Makefile is included 928 ifndef CONFIG_DYNAMIC_SCS !! 791 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 929 CC_FLAGS_SCS := -fsanitize=shadow-call-stac !! 792 CHECKFLAGS += $(NOSTDINC_FLAGS) 930 KBUILD_CFLAGS += $(CC_FLAGS_SCS) << 931 endif << 932 export CC_FLAGS_SCS << 933 endif << 934 793 935 ifdef CONFIG_LTO_CLANG !! 794 # warn about C99 declaration after statement 936 ifdef CONFIG_LTO_CLANG_THIN !! 795 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 937 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit << 938 else << 939 CC_FLAGS_LTO := -flto << 940 endif << 941 CC_FLAGS_LTO += -fvisibility=hidden << 942 796 943 # Limit inlining across translation units to r !! 797 # disable pointer signed / unsigned warnings in gcc 4.0 944 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 !! 798 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 945 endif << 946 799 947 ifdef CONFIG_LTO !! 800 # disable invalid "can't wrap" optimizations for signed / pointers 948 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) !! 801 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 949 KBUILD_AFLAGS += -fno-lto << 950 export CC_FLAGS_LTO << 951 endif << 952 802 953 ifdef CONFIG_CFI_CLANG !! 803 # conserve stack if available 954 CC_FLAGS_CFI := -fsanitize=kcfi !! 804 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 955 KBUILD_CFLAGS += $(CC_FLAGS_CFI) << 956 export CC_FLAGS_CFI << 957 endif << 958 805 959 # Architectures can define flags to add/remove !! 806 # disallow errors like 'EXPORT_GPL(foo);' with missing header 960 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN !! 807 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) 961 export CC_FLAGS_FPU << 962 export CC_FLAGS_NO_FPU << 963 808 964 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) !! 809 # require functions to have arguments in prototypes, not empty 'int foo()' 965 # Set the minimal function alignment. Use the !! 810 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) 966 # -fmin-function-alignment if it is available, << 967 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME << 968 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT << 969 KBUILD_CFLAGS += -fmin-function-alignment=$(CO << 970 else << 971 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU << 972 endif << 973 endif << 974 811 975 # arch Makefile may override CC so keep this a !! 812 # Prohibit date/time macros, which would make the build non-deterministic 976 NOSTDINC_FLAGS += -nostdinc !! 813 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 977 814 978 # To gain proper coverage for CONFIG_UBSAN_BOU !! 815 # enforce correct pointer usage 979 # the kernel uses only C99 flexible arrays for !! 816 KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) 980 # arrays. Enforce this for everything that may << 981 # perform bounds checking. << 982 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl << 983 << 984 #Currently, disable -Wstringop-overflow for GC << 985 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW << 986 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + << 987 817 988 # disable invalid "can't wrap" optimizations f !! 818 # Require designated initializers for all marked structures 989 KBUILD_CFLAGS += -fno-strict-overflow !! 819 KBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 990 820 991 # Make sure -fstack-check isn't enabled (like !! 821 # use the deterministic mode of AR if available 992 KBUILD_CFLAGS += -fno-stack-check !! 822 KBUILD_ARFLAGS := $(call ar-option,D) 993 823 994 # conserve stack if available !! 824 include scripts/Makefile.kasan 995 ifdef CONFIG_CC_IS_GCC !! 825 include scripts/Makefile.extrawarn 996 KBUILD_CFLAGS += -fconserve-stack !! 826 include scripts/Makefile.ubsan 997 endif << 998 827 999 # change __FILE__ to the relative path from th !! 828 # Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the 1000 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p !! 829 # last assignments >> 830 KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) >> 831 KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) >> 832 KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) 1001 833 1002 # include additional Makefiles when needed !! 834 # Use --build-id when available. 1003 include-y := scripts/Ma !! 835 LDFLAGS_BUILD_ID := $(patsubst -Wl$(comma)%,%,\ 1004 include-$(CONFIG_DEBUG_INFO) += scripts/Ma !! 836 $(call cc-ldoption, -Wl$(comma)--build-id,)) 1005 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma !! 837 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 1006 include-$(CONFIG_KASAN) += scripts/Ma !! 838 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 1007 include-$(CONFIG_KCSAN) += scripts/Ma << 1008 include-$(CONFIG_KMSAN) += scripts/Ma << 1009 include-$(CONFIG_UBSAN) += scripts/Ma << 1010 include-$(CONFIG_KCOV) += scripts/Ma << 1011 include-$(CONFIG_RANDSTRUCT) += scripts/Ma << 1012 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma << 1013 << 1014 include $(addprefix $(srctree)/, $(include-y) << 1015 << 1016 # scripts/Makefile.gcc-plugins is intentional << 1017 # Do not add $(call cc-option,...) below this << 1018 # from the clean source tree, the GCC plugins << 1019 << 1020 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS << 1021 KBUILD_CPPFLAGS += $(KCPPFLAGS) << 1022 KBUILD_AFLAGS += $(KAFLAGS) << 1023 KBUILD_CFLAGS += $(KCFLAGS) << 1024 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) << 1025 << 1026 KBUILD_LDFLAGS_MODULE += --build-id=sha1 << 1027 LDFLAGS_vmlinux += --build-id=sha1 << 1028 << 1029 KBUILD_LDFLAGS += -z noexecstack << 1030 ifeq ($(CONFIG_LD_IS_BFD),y) << 1031 KBUILD_LDFLAGS += $(call ld-option,--no-warn << 1032 endif << 1033 839 1034 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) !! 840 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 1035 LDFLAGS_vmlinux += -X !! 841 LDFLAGS_vmlinux += $(call ld-option, --gc-sections,) 1036 endif << 1037 << 1038 ifeq ($(CONFIG_RELR),y) << 1039 # ld.lld before 15 did not support -z pack-re << 1040 LDFLAGS_vmlinux += $(call ld-option,--pack-dy << 1041 endif 842 endif 1042 843 1043 # We never want expected sections to be place !! 844 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1044 # linker. All sections should be explicitly n !! 845 LDFLAGS_vmlinux += $(call ld-option, -X,) 1045 ifdef CONFIG_LD_ORPHAN_WARN << 1046 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG << 1047 endif 846 endif 1048 847 1049 # Align the bit size of userspace programs wi << 1050 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta << 1051 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta << 1052 << 1053 # make the checker run with the right archite << 1054 CHECKFLAGS += --arch=$(ARCH) << 1055 << 1056 # insure the checker run with the right endia << 1057 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- << 1058 << 1059 # the checker needs the correct machine size << 1060 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) << 1061 << 1062 # Default kernel image to build when no speci 848 # Default kernel image to build when no specific target is given. 1063 # KBUILD_IMAGE may be overruled on the comman 849 # KBUILD_IMAGE may be overruled on the command line or 1064 # set in the environment 850 # set in the environment 1065 # Also any assignments in arch/$(ARCH)/Makefi 851 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 1066 # this default value 852 # this default value 1067 export KBUILD_IMAGE ?= vmlinux 853 export KBUILD_IMAGE ?= vmlinux 1068 854 1069 # 855 # 1070 # INSTALL_PATH specifies where to place the u 856 # INSTALL_PATH specifies where to place the updated kernel and system map 1071 # images. Default is /boot, but you can set i 857 # images. Default is /boot, but you can set it to other values 1072 export INSTALL_PATH ?= /boot 858 export INSTALL_PATH ?= /boot 1073 859 1074 # 860 # 1075 # INSTALL_DTBS_PATH specifies a prefix for re 861 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1076 # Like INSTALL_MOD_PATH, it isn't defined in 862 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1077 # an argument if needed. Otherwise it default 863 # an argument if needed. Otherwise it defaults to the kernel install path 1078 # 864 # 1079 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d 865 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1080 866 1081 # 867 # 1082 # INSTALL_MOD_PATH specifies a prefix to MODL 868 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1083 # relocations required by build roots. This 869 # relocations required by build roots. This is not defined in the 1084 # makefile but the argument can be passed to 870 # makefile but the argument can be passed to make if needed. 1085 # 871 # 1086 872 1087 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 873 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1088 export MODLIB 874 export MODLIB 1089 875 1090 PHONY += prepare0 !! 876 # 1091 !! 877 # INSTALL_MOD_STRIP, if defined, will cause modules to be 1092 export extmod_prefix = $(if $(KBUILD_EXTMOD), !! 878 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 1093 export MODORDER := $(extmod_prefix)modules.or !! 879 # the default option --strip-debug will be used. Otherwise, 1094 export MODULES_NSDEPS := $(extmod_prefix)modu !! 880 # INSTALL_MOD_STRIP value will be used as the options to the strip command. >> 881 >> 882 ifdef INSTALL_MOD_STRIP >> 883 ifeq ($(INSTALL_MOD_STRIP),1) >> 884 mod_strip_cmd = $(STRIP) --strip-debug >> 885 else >> 886 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) >> 887 endif # INSTALL_MOD_STRIP=1 >> 888 else >> 889 mod_strip_cmd = true >> 890 endif # INSTALL_MOD_STRIP >> 891 export mod_strip_cmd >> 892 >> 893 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed >> 894 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP >> 895 # or CONFIG_MODULE_COMPRESS_XZ. >> 896 >> 897 mod_compress_cmd = true >> 898 ifdef CONFIG_MODULE_COMPRESS >> 899 ifdef CONFIG_MODULE_COMPRESS_GZIP >> 900 mod_compress_cmd = gzip -n -f >> 901 endif # CONFIG_MODULE_COMPRESS_GZIP >> 902 ifdef CONFIG_MODULE_COMPRESS_XZ >> 903 mod_compress_cmd = xz -f >> 904 endif # CONFIG_MODULE_COMPRESS_XZ >> 905 endif # CONFIG_MODULE_COMPRESS >> 906 export mod_compress_cmd >> 907 >> 908 # Select initial ramdisk compression format, default is gzip(1). >> 909 # This shall be used by the dracut(8) tool while creating an initramfs image. >> 910 # >> 911 INITRD_COMPRESS-y := gzip >> 912 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 >> 913 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma >> 914 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz >> 915 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo >> 916 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 >> 917 # do not export INITRD_COMPRESS, since we didn't actually >> 918 # choose a sane default compression above. >> 919 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) 1095 920 1096 ifeq ($(KBUILD_EXTMOD),) !! 921 ifdef CONFIG_MODULE_SIG_ALL >> 922 $(eval $(call config_filename,MODULE_SIG_KEY)) 1097 923 1098 build-dir := . !! 924 mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 1099 clean-dirs := $(sort . Documentation \ << 1100 $(patsubst %/,%,$(filter << 1101 $(drivers-) $(libs-)) << 1102 << 1103 export ARCH_CORE := $(core-y) << 1104 export ARCH_LIB := $(filter %/, $(lib << 1105 export ARCH_DRIVERS := $(drivers-y) $(dri << 1106 # Externally visible symbols (used by link-vm << 1107 << 1108 KBUILD_VMLINUX_OBJS := ./built-in.a << 1109 ifdef CONFIG_MODULES << 1110 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a << 1111 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib << 1112 else 925 else 1113 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, !! 926 mod_sign_cmd = true 1114 endif 927 endif >> 928 export mod_sign_cmd 1115 929 1116 export KBUILD_VMLINUX_LIBS !! 930 ifdef CONFIG_STACK_VALIDATION 1117 export KBUILD_LDS := arch/$(SRCARCH) !! 931 has_libelf := $(call try-run,\ >> 932 echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf -,1,0) >> 933 ifeq ($(has_libelf),1) >> 934 objtool_target := tools/objtool FORCE >> 935 else >> 936 $(warning "Cannot use CONFIG_STACK_VALIDATION, please install libelf-dev, libelf-devel or elfutils-libelf-devel") >> 937 SKIP_STACK_VALIDATION := 1 >> 938 export SKIP_STACK_VALIDATION >> 939 endif >> 940 endif >> 941 >> 942 >> 943 ifeq ($(KBUILD_EXTMOD),) >> 944 core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ >> 945 >> 946 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ >> 947 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ >> 948 $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) >> 949 >> 950 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ >> 951 $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-)))) >> 952 >> 953 init-y := $(patsubst %/, %/built-in.o, $(init-y)) >> 954 core-y := $(patsubst %/, %/built-in.o, $(core-y)) >> 955 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) >> 956 net-y := $(patsubst %/, %/built-in.o, $(net-y)) >> 957 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) >> 958 libs-y2 := $(filter-out %.a, $(patsubst %/, %/built-in.o, $(libs-y))) >> 959 virt-y := $(patsubst %/, %/built-in.o, $(virt-y)) 1118 960 >> 961 # Externally visible symbols (used by link-vmlinux.sh) >> 962 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) >> 963 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y2) $(drivers-y) $(net-y) $(virt-y) >> 964 export KBUILD_VMLINUX_LIBS := $(libs-y1) >> 965 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds >> 966 export LDFLAGS_vmlinux >> 967 # used by scripts/package/Makefile >> 968 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools) >> 969 >> 970 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) $(KBUILD_VMLINUX_LIBS) >> 971 >> 972 # Include targets which we want to execute sequentially if the rest of the >> 973 # kernel build went well. If CONFIG_TRIM_UNUSED_KSYMS is set, this might be >> 974 # evaluated more than once. >> 975 PHONY += vmlinux_prereq >> 976 vmlinux_prereq: $(vmlinux-deps) FORCE >> 977 ifdef CONFIG_HEADERS_CHECK >> 978 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check >> 979 endif >> 980 ifdef CONFIG_GDB_SCRIPTS >> 981 $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py >> 982 endif 1119 ifdef CONFIG_TRIM_UNUSED_KSYMS 983 ifdef CONFIG_TRIM_UNUSED_KSYMS 1120 # For the kernel to actually contain only the !! 984 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ 1121 # we have to build modules as well to determi !! 985 "$(MAKE) -f $(srctree)/Makefile vmlinux" 1122 KBUILD_MODULES := 1 << 1123 endif 986 endif 1124 987 1125 # '$(AR) mPi' needs 'T' to workaround the bug !! 988 # standalone target for easier testing 1126 quiet_cmd_ar_vmlinux.a = AR $@ !! 989 include/generated/autoksyms.h: FORCE 1127 cmd_ar_vmlinux.a = \ !! 990 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh true 1128 rm -f $@; \ << 1129 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS << 1130 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) << 1131 << 1132 targets += vmlinux.a << 1133 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea << 1134 $(call if_changed,ar_vmlinux.a) << 1135 << 1136 PHONY += vmlinux_o << 1137 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) << 1138 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1139 991 1140 vmlinux.o modules.builtin.modinfo modules.bui !! 992 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) 1141 @: !! 993 >> 994 # Final link of vmlinux with optional arch pass after final link >> 995 cmd_link-vmlinux = \ >> 996 $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) ; \ >> 997 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1142 998 1143 PHONY += vmlinux !! 999 vmlinux: scripts/link-vmlinux.sh vmlinux_prereq $(vmlinux-deps) FORCE 1144 # LDFLAGS_vmlinux in the top Makefile defines !! 1000 +$(call if_changed,link-vmlinux) 1145 # not for decompressors. LDFLAGS_vmlinux in a !! 1001 1146 # unrelated; the decompressors just happen to !! 1002 # Build samples along the rest of the kernel 1147 # arch/*/boot/compressed/vmlinux. !! 1003 ifdef CONFIG_SAMPLES 1148 # Export LDFLAGS_vmlinux only to scripts/Make !! 1004 vmlinux-dirs += samples 1149 # !! 1005 endif 1150 # _LDFLAGS_vmlinux is a workaround for the 'p << 1151 # https://savannah.gnu.org/bugs/?61463 << 1152 # For Make > 4.4, the following simple code w << 1153 # vmlinux: private export LDFLAGS_vmlinux := << 1154 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG << 1155 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ << 1156 vmlinux: vmlinux.o $(KBUILD_LDS) modpost << 1157 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1158 1006 1159 # The actual objects are generated when desce 1007 # The actual objects are generated when descending, 1160 # make sure no implicit rule kicks in 1008 # make sure no implicit rule kicks in 1161 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 1009 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 1162 1010 1163 ifeq ($(origin KERNELRELEASE),file) !! 1011 # Handle descending into subdirectories listed in $(vmlinux-dirs) 1164 filechk_kernel.release = $(srctree)/scripts/s !! 1012 # Preset locale variables to speed up the build process. Limit locale 1165 else !! 1013 # tweaks to this spot to avoid wrong language settings when running 1166 filechk_kernel.release = echo $(KERNELRELEASE !! 1014 # make menuconfig etc. 1167 endif !! 1015 # Error messages still appears in the original language >> 1016 >> 1017 PHONY += $(vmlinux-dirs) >> 1018 $(vmlinux-dirs): prepare scripts >> 1019 $(Q)$(MAKE) $(build)=$@ >> 1020 >> 1021 define filechk_kernel.release >> 1022 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" >> 1023 endef 1168 1024 1169 # Store (new) KERNELRELEASE string in include 1025 # Store (new) KERNELRELEASE string in include/config/kernel.release 1170 include/config/kernel.release: FORCE !! 1026 include/config/kernel.release: include/config/auto.conf FORCE 1171 $(call filechk,kernel.release) 1027 $(call filechk,kernel.release) 1172 1028 1173 # Additional helpers built in scripts/ << 1174 # Carefully list dependencies so we do not tr << 1175 # in parallel << 1176 PHONY += scripts << 1177 scripts: scripts_basic scripts_dtc << 1178 $(Q)$(MAKE) $(build)=$(@) << 1179 1029 1180 # Things we need to do before we recursively 1030 # Things we need to do before we recursively start building the kernel 1181 # or the modules are listed in "prepare". 1031 # or the modules are listed in "prepare". 1182 # A multi level approach is used. prepareN is 1032 # A multi level approach is used. prepareN is processed before prepareN-1. 1183 # archprepare is used in arch Makefiles and w 1033 # archprepare is used in arch Makefiles and when processed asm symlink, 1184 # version.h and scripts_basic is processed / 1034 # version.h and scripts_basic is processed / created. 1185 1035 1186 PHONY += prepare archprepare !! 1036 # Listed in dependency order >> 1037 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 1187 1038 1188 archprepare: outputmakefile archheaders archs !! 1039 # prepare3 is used to check if we are building in a separate output directory, 1189 asm-generic $(version_h) include/gene !! 1040 # and if so do: 1190 include/generated/compile.h include/g !! 1041 # 1) Check that make has not been executed in the kernel src $(srctree) 1191 !! 1042 prepare3: include/config/kernel.release 1192 prepare0: archprepare !! 1043 ifneq ($(KBUILD_SRC),) 1193 $(Q)$(MAKE) $(build)=scripts/mod !! 1044 @$(kecho) ' Using $(srctree) as source for kernel' 1194 $(Q)$(MAKE) $(build)=. prepare !! 1045 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ >> 1046 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ >> 1047 echo >&2 " in the '$(srctree)' directory.";\ >> 1048 /bin/false; \ >> 1049 fi; >> 1050 endif >> 1051 >> 1052 # prepare2 creates a makefile if using a separate output directory. >> 1053 # From this point forward, .config has been reprocessed, so any rules >> 1054 # that need to depend on updated CONFIG_* values can be checked here. >> 1055 prepare2: prepare3 prepare-compiler-check outputmakefile asm-generic >> 1056 >> 1057 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ >> 1058 include/config/auto.conf >> 1059 $(cmd_crmodverdir) 1195 1060 1196 # All the preparing.. !! 1061 archprepare: archheaders archscripts prepare1 scripts_basic 1197 prepare: prepare0 << 1198 ifdef CONFIG_RUST << 1199 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1200 $(Q)$(MAKE) $(build)=rust << 1201 endif << 1202 1062 1203 PHONY += remove-stale-files !! 1063 prepare0: archprepare gcc-plugins 1204 remove-stale-files: !! 1064 $(Q)$(MAKE) $(build)=. 1205 $(Q)$(srctree)/scripts/remove-stale-f << 1206 1065 1207 # Support for using generic headers in asm-ge !! 1066 # All the preparing.. 1208 asm-generic := -f $(srctree)/scripts/Makefile !! 1067 prepare: prepare0 prepare-objtool 1209 1068 1210 PHONY += asm-generic uapi-asm-generic !! 1069 PHONY += prepare-objtool 1211 asm-generic: uapi-asm-generic !! 1070 prepare-objtool: $(objtool_target) 1212 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC !! 1071 1213 generic=include/asm-generic !! 1072 # Check for CONFIG flags that require compiler support. Abort the build 1214 uapi-asm-generic: !! 1073 # after .config has been processed, but before the kernel build starts. 1215 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC !! 1074 # 1216 generic=include/uapi/asm-generic !! 1075 # For security-sensitive CONFIG options, we don't want to fallback and/or >> 1076 # silently change which compiler flags will be used, since that leads to >> 1077 # producing kernels with different security feature characteristics >> 1078 # depending on the compiler used. (For example, "But I selected >> 1079 # CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") >> 1080 PHONY += prepare-compiler-check >> 1081 prepare-compiler-check: FORCE >> 1082 # Make sure compiler supports requested stack protector flag. >> 1083 ifdef stackp-name >> 1084 ifeq ($(call cc-option, $(stackp-flag)),) >> 1085 @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ >> 1086 $(stackp-flag) not supported by compiler >&2 && exit 1 >> 1087 endif >> 1088 endif >> 1089 # Make sure compiler does not have buggy stack-protector support. >> 1090 ifdef stackp-check >> 1091 ifneq ($(shell $(CONFIG_SHELL) $(stackp-check) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y) >> 1092 @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ >> 1093 $(stackp-flag) available but compiler is broken >&2 && exit 1 >> 1094 endif >> 1095 endif >> 1096 @: 1217 1097 1218 # Generate some files 1098 # Generate some files 1219 # ------------------------------------------- 1099 # --------------------------------------------------------------------------- 1220 1100 1221 # KERNELRELEASE can change from a few differe 1101 # KERNELRELEASE can change from a few different places, meaning version.h 1222 # needs to be updated, so this check is force 1102 # needs to be updated, so this check is forced on all builds 1223 1103 1224 uts_len := 64 1104 uts_len := 64 1225 define filechk_utsrelease.h 1105 define filechk_utsrelease.h 1226 if [ `echo -n "$(KERNELRELEASE)" | wc 1106 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1227 echo '"$(KERNELRELEASE)" exceeds $( 1107 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1228 exit 1; 1108 exit 1; \ 1229 fi; 1109 fi; \ 1230 echo \#define UTS_RELEASE \"$(KERNELR !! 1110 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1231 endef 1111 endef 1232 1112 1233 define filechk_version.h 1113 define filechk_version.h 1234 if [ $(SUBLEVEL) -gt 255 ]; then !! 1114 (echo \#define LINUX_VERSION_CODE $(shell \ 1235 echo \#define LINUX_VERSION_C !! 1115 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1236 expr $(VERSION) \* 65536 + $( !! 1116 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1237 else << 1238 echo \#define LINUX_VERSION_C << 1239 expr $(VERSION) \* 65536 + $( << 1240 fi; << 1241 echo '#define KERNEL_VERSION(a,b,c) ( << 1242 ((c) > 255 ? 255 : (c)))'; << 1243 echo \#define LINUX_VERSION_MAJOR $(V << 1244 echo \#define LINUX_VERSION_PATCHLEVE << 1245 echo \#define LINUX_VERSION_SUBLEVEL << 1246 endef 1117 endef 1247 1118 1248 $(version_h): private PATCHLEVEL := $(or $(PA !! 1119 $(version_h): $(srctree)/Makefile FORCE 1249 $(version_h): private SUBLEVEL := $(or $(SUBL << 1250 $(version_h): FORCE << 1251 $(call filechk,version.h) 1120 $(call filechk,version.h) >> 1121 $(Q)rm -f $(old_version_h) 1252 1122 1253 include/generated/utsrelease.h: include/confi 1123 include/generated/utsrelease.h: include/config/kernel.release FORCE 1254 $(call filechk,utsrelease.h) 1124 $(call filechk,utsrelease.h) 1255 1125 1256 filechk_compile.h = $(srctree)/scripts/mkcomp << 1257 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION << 1258 << 1259 include/generated/compile.h: FORCE << 1260 $(call filechk,compile.h) << 1261 << 1262 PHONY += headerdep 1126 PHONY += headerdep 1263 headerdep: 1127 headerdep: 1264 $(Q)find $(srctree)/include/ -name '* 1128 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1265 $(srctree)/scripts/headerdep.pl -I$(s 1129 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1266 1130 1267 # ------------------------------------------- 1131 # --------------------------------------------------------------------------- >> 1132 # Firmware install >> 1133 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware >> 1134 export INSTALL_FW_PATH >> 1135 >> 1136 PHONY += firmware_install >> 1137 firmware_install: >> 1138 @mkdir -p $(objtree)/firmware >> 1139 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install >> 1140 >> 1141 # --------------------------------------------------------------------------- 1268 # Kernel headers 1142 # Kernel headers 1269 1143 1270 #Default location for installed headers 1144 #Default location for installed headers 1271 export INSTALL_HDR_PATH = $(objtree)/usr 1145 export INSTALL_HDR_PATH = $(objtree)/usr 1272 1146 1273 quiet_cmd_headers_install = INSTALL $(INSTALL !! 1147 # If we do an all arch process set dst to include/arch-$(hdr-arch) 1274 cmd_headers_install = \ !! 1148 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/arch-$(hdr-arch), dst=include) 1275 mkdir -p $(INSTALL_HDR_PATH); \ << 1276 rsync -mrl --include='*/' --include=' << 1277 usr/include $(INSTALL_HDR_PATH) << 1278 1149 1279 PHONY += headers_install !! 1150 PHONY += archheaders 1280 headers_install: headers !! 1151 archheaders: 1281 $(call cmd,headers_install) << 1282 << 1283 PHONY += archheaders archscripts << 1284 << 1285 hdr-inst := -f $(srctree)/scripts/Makefile.he << 1286 << 1287 PHONY += headers << 1288 headers: $(version_h) scripts_unifdef uapi-as << 1289 $(if $(filter um, $(SRCARCH)), $(erro << 1290 $(Q)$(MAKE) $(hdr-inst)=include/uapi << 1291 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC << 1292 << 1293 ifdef CONFIG_HEADERS_INSTALL << 1294 prepare: headers << 1295 endif << 1296 << 1297 PHONY += scripts_unifdef << 1298 scripts_unifdef: scripts_basic << 1299 $(Q)$(MAKE) $(build)=scripts scripts/ << 1300 << 1301 # ------------------------------------------- << 1302 # Install << 1303 1152 1304 # Many distributions have the custom install !! 1153 PHONY += archscripts 1305 # If DKMS is installed, 'make install' will e !! 1154 archscripts: 1306 # to this Makefile to build and install exter << 1307 # Cancel sub_make_done so that options such a << 1308 1155 1309 quiet_cmd_install = INSTALL $(INSTALL_PATH) !! 1156 PHONY += __headers 1310 cmd_install = unset sub_make_done; $(sr !! 1157 __headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts >> 1158 $(Q)$(MAKE) $(build)=scripts build_unifdef >> 1159 >> 1160 PHONY += headers_install_all >> 1161 headers_install_all: >> 1162 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1311 1163 1312 # ------------------------------------------- !! 1164 PHONY += headers_install 1313 # vDSO install !! 1165 headers_install: __headers 1314 !! 1166 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ 1315 PHONY += vdso_install !! 1167 $(error Headers not exportable for the $(SRCARCH) architecture)) 1316 vdso_install: export INSTALL_FILES = $(vdso-i !! 1168 $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include 1317 vdso_install: !! 1169 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi $(hdr-dst) 1318 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1170 1319 !! 1171 PHONY += headers_check_all 1320 # ------------------------------------------- !! 1172 headers_check_all: headers_install_all 1321 # Tools !! 1173 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1322 !! 1174 1323 ifdef CONFIG_OBJTOOL !! 1175 PHONY += headers_check 1324 prepare: tools/objtool !! 1176 headers_check: headers_install 1325 endif !! 1177 $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1 1326 !! 1178 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi $(hdr-dst) HDRCHECK=1 1327 ifdef CONFIG_BPF << 1328 ifdef CONFIG_DEBUG_INFO_BTF << 1329 prepare: tools/bpf/resolve_btfids << 1330 endif << 1331 endif << 1332 << 1333 # The tools build system is not a part of Kbu << 1334 # its own unique issues. If you need to integ << 1335 # please consider locating that tool outside << 1336 # standard Kbuild "hostprogs" syntax instead << 1337 # here. See Documentation/kbuild/makefiles.rs << 1338 << 1339 PHONY += resolve_btfids_clean << 1340 << 1341 resolve_btfids_O = $(abspath $(objtree))/tool << 1342 << 1343 # tools/bpf/resolve_btfids directory might no << 1344 # in output directory, skip its clean in that << 1345 resolve_btfids_clean: << 1346 ifneq ($(wildcard $(resolve_btfids_O)),) << 1347 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ << 1348 endif << 1349 << 1350 # Clear a bunch of variables before executing << 1351 ifeq ($(quiet),silent_) << 1352 tools_silent=s << 1353 endif << 1354 << 1355 tools/: FORCE << 1356 $(Q)mkdir -p $(objtree)/tools << 1357 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1358 << 1359 tools/%: FORCE << 1360 $(Q)mkdir -p $(objtree)/tools << 1361 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1362 1179 1363 # ------------------------------------------- 1180 # --------------------------------------------------------------------------- 1364 # Kernel selftest 1181 # Kernel selftest 1365 1182 1366 PHONY += kselftest 1183 PHONY += kselftest 1367 kselftest: headers !! 1184 kselftest: 1368 $(Q)$(MAKE) -C $(srctree)/tools/testi !! 1185 $(Q)$(MAKE) -C tools/testing/selftests run_tests 1369 1186 1370 kselftest-%: headers FORCE !! 1187 PHONY += kselftest-clean 1371 $(Q)$(MAKE) -C $(srctree)/tools/testi !! 1188 kselftest-clean: >> 1189 $(Q)$(MAKE) -C tools/testing/selftests clean 1372 1190 1373 PHONY += kselftest-merge 1191 PHONY += kselftest-merge 1374 kselftest-merge: 1192 kselftest-merge: 1375 $(if $(wildcard $(objtree)/.config),, 1193 $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1376 $(Q)find $(srctree)/tools/testing/sel !! 1194 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ 1377 xargs $(srctree)/scripts/kcon !! 1195 -m $(objtree)/.config \ 1378 $(Q)$(MAKE) -f $(srctree)/Makefile ol !! 1196 $(srctree)/tools/testing/selftests/*/config >> 1197 +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1379 1198 1380 # ------------------------------------------- 1199 # --------------------------------------------------------------------------- 1381 # Devicetree files !! 1200 # Modules 1382 << 1383 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ << 1384 dtstree := arch/$(SRCARCH)/boot/dts << 1385 endif << 1386 << 1387 ifneq ($(dtstree),) << 1388 << 1389 %.dtb: dtbs_prepare << 1390 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1391 << 1392 %.dtbo: dtbs_prepare << 1393 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1394 1201 1395 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ !! 1202 ifdef CONFIG_MODULES 1396 dtbs: dtbs_prepare << 1397 $(Q)$(MAKE) $(build)=$(dtstree) need- << 1398 1203 1399 # include/config/kernel.release is actually n !! 1204 # By default, build modules as well 1400 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) << 1401 # dtbs_install depend on it as dtbs_install m << 1402 dtbs_prepare: include/config/kernel.release s << 1403 1205 1404 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), !! 1206 all: modules 1405 export CHECK_DTBS=y << 1406 endif << 1407 1207 1408 ifneq ($(CHECK_DTBS),) !! 1208 # Build modules 1409 dtbs_prepare: dt_binding_schemas !! 1209 # 1410 endif !! 1210 # A module can be listed more than once in obj-m resulting in >> 1211 # duplicate lines in modules.order files. Those are removed >> 1212 # using awk while concatenating to the final file. >> 1213 >> 1214 PHONY += modules >> 1215 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin >> 1216 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order >> 1217 @$(kecho) ' Building modules, stage 2.'; >> 1218 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1219 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1411 1220 1412 dtbs_check: dtbs !! 1221 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) >> 1222 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1413 1223 1414 dtbs_install: !! 1224 %/modules.builtin: include/config/auto.conf 1415 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1225 $(Q)$(MAKE) $(modbuiltin)=$* 1416 1226 1417 ifdef CONFIG_OF_EARLY_FLATTREE << 1418 all: dtbs << 1419 endif << 1420 1227 1421 endif !! 1228 # Target to prepare building external modules >> 1229 PHONY += modules_prepare >> 1230 modules_prepare: prepare scripts 1422 1231 1423 PHONY += scripts_dtc !! 1232 # Target to install modules 1424 scripts_dtc: scripts_basic !! 1233 PHONY += modules_install 1425 $(Q)$(MAKE) $(build)=scripts/dtc !! 1234 modules_install: _modinst_ _modinst_post >> 1235 >> 1236 PHONY += _modinst_ >> 1237 _modinst_: >> 1238 @rm -rf $(MODLIB)/kernel >> 1239 @rm -f $(MODLIB)/source >> 1240 @mkdir -p $(MODLIB)/kernel >> 1241 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source >> 1242 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ >> 1243 rm -f $(MODLIB)/build ; \ >> 1244 ln -s $(CURDIR) $(MODLIB)/build ; \ >> 1245 fi >> 1246 @cp -f $(objtree)/modules.order $(MODLIB)/ >> 1247 @cp -f $(objtree)/modules.builtin $(MODLIB)/ >> 1248 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1249 >> 1250 # This depmod is only for convenience to give the initial >> 1251 # boot a modules.dep even before / is mounted read-write. However the >> 1252 # boot script depmod is the master version. >> 1253 PHONY += _modinst_post >> 1254 _modinst_post: _modinst_ >> 1255 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst >> 1256 $(call cmd,depmod) 1426 1257 1427 ifneq ($(filter dt_binding_check, $(MAKECMDGO !! 1258 ifeq ($(CONFIG_MODULE_SIG), y) 1428 export CHECK_DTBS=y !! 1259 PHONY += modules_sign >> 1260 modules_sign: >> 1261 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1429 endif 1262 endif 1430 1263 1431 PHONY += dt_binding_check dt_binding_schemas !! 1264 else # CONFIG_MODULES 1432 dt_binding_check: dt_binding_schemas scripts_ << 1433 $(Q)$(MAKE) $(build)=Documentation/de << 1434 << 1435 dt_binding_schemas: << 1436 $(Q)$(MAKE) $(build)=Documentation/de << 1437 << 1438 PHONY += dt_compatible_check << 1439 dt_compatible_check: dt_binding_schemas << 1440 $(Q)$(MAKE) $(build)=Documentation/de << 1441 1265 >> 1266 # Modules not configured 1442 # ------------------------------------------- 1267 # --------------------------------------------------------------------------- 1443 # Modules << 1444 << 1445 ifdef CONFIG_MODULES << 1446 << 1447 # By default, build modules as well << 1448 << 1449 all: modules << 1450 1268 1451 # When we're building modules with modversion !! 1269 PHONY += modules modules_install 1452 # the built-in objects during the descend as !! 1270 modules modules_install: 1453 # make sure the checksums are up to date befo !! 1271 @echo >&2 1454 ifdef CONFIG_MODVERSIONS !! 1272 @echo >&2 "The present kernel configuration has modules disabled." 1455 KBUILD_BUILTIN := 1 !! 1273 @echo >&2 "Type 'make config' and enable loadable module support." 1456 endif !! 1274 @echo >&2 "Then build a kernel with module support enabled." 1457 !! 1275 @echo >&2 1458 # Build modules !! 1276 @exit 1 1459 # << 1460 << 1461 # *.ko are usually independent of vmlinux, bu << 1462 # is an exception. << 1463 ifdef CONFIG_DEBUG_INFO_BTF_MODULES << 1464 KBUILD_BUILTIN := 1 << 1465 modules: vmlinux << 1466 endif << 1467 << 1468 modules: modules_prepare << 1469 << 1470 # Target to prepare building external modules << 1471 modules_prepare: prepare << 1472 $(Q)$(MAKE) $(build)=scripts scripts/ << 1473 1277 1474 endif # CONFIG_MODULES 1278 endif # CONFIG_MODULES 1475 1279 1476 ### 1280 ### 1477 # Cleaning is done on three levels. 1281 # Cleaning is done on three levels. 1478 # make clean Delete most generated files 1282 # make clean Delete most generated files 1479 # Leave enough to build extern 1283 # Leave enough to build external modules 1480 # make mrproper Delete the current configura 1284 # make mrproper Delete the current configuration, and all generated files 1481 # make distclean Remove editor backup files, 1285 # make distclean Remove editor backup files, patch leftover files and the like 1482 1286 1483 # Directories & files removed with 'make clea 1287 # Directories & files removed with 'make clean' 1484 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1288 CLEAN_DIRS += $(MODVERDIR) 1485 modules.builtin modules.builti << 1486 compile_commands.json rust/tes << 1487 rust-project.json .vmlinux.obj << 1488 1289 1489 # Directories & files removed with 'make mrpr 1290 # Directories & files removed with 'make mrproper' 1490 MRPROPER_FILES += include/config include/gene !! 1291 MRPROPER_DIRS += include/config usr/include include/generated \ 1491 arch/$(SRCARCH)/include/gen !! 1292 arch/*/include/generated .tmp_objdiff 1492 debian snap tar-install PKG !! 1293 MRPROPER_FILES += .config .config.old .version .old_version \ 1493 .config .config.old .versio !! 1294 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 1494 Module.symvers \ !! 1295 signing_key.pem signing_key.priv signing_key.x509 \ 1495 certs/signing_key.pem \ !! 1296 x509.genkey extra_certificates signing_key.x509.keyid \ 1496 certs/x509.genkey \ !! 1297 signing_key.x509.signer vmlinux-gdb.py 1497 vmlinux-gdb.py \ << 1498 rpmbuild \ << 1499 rust/libmacros.so << 1500 1298 1501 # clean - Delete most, but leave enough to bu 1299 # clean - Delete most, but leave enough to build external modules 1502 # 1300 # 1503 clean: private rm-files := $(CLEAN_FILES) !! 1301 clean: rm-dirs := $(CLEAN_DIRS) >> 1302 clean: rm-files := $(CLEAN_FILES) >> 1303 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) 1504 1304 1505 PHONY += archclean vmlinuxclean !! 1305 PHONY += $(clean-dirs) clean archclean vmlinuxclean >> 1306 $(clean-dirs): >> 1307 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1506 1308 1507 vmlinuxclean: 1309 vmlinuxclean: 1508 $(Q)$(CONFIG_SHELL) $(srctree)/script 1310 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1509 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f 1311 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1510 1312 1511 clean: archclean vmlinuxclean resolve_btfids_ !! 1313 clean: archclean vmlinuxclean 1512 1314 1513 # mrproper - Delete all generated files, incl 1315 # mrproper - Delete all generated files, including .config 1514 # 1316 # 1515 mrproper: private rm-files := $(MRPROPER_FILE !! 1317 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) >> 1318 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1516 mrproper-dirs := $(addprefix _mrproper_, 1319 mrproper-dirs := $(addprefix _mrproper_,scripts) 1517 1320 1518 PHONY += $(mrproper-dirs) mrproper !! 1321 PHONY += $(mrproper-dirs) mrproper archmrproper 1519 $(mrproper-dirs): 1322 $(mrproper-dirs): 1520 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1323 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1521 1324 1522 mrproper: clean $(mrproper-dirs) !! 1325 mrproper: clean archmrproper $(mrproper-dirs) >> 1326 $(call cmd,rmdirs) 1523 $(call cmd,rmfiles) 1327 $(call cmd,rmfiles) 1524 @find . $(RCS_FIND_IGNORE) \ << 1525 \( -name '*.rmeta' \) \ << 1526 -type f -print | xargs rm -f << 1527 1328 1528 # distclean 1329 # distclean 1529 # 1330 # 1530 PHONY += distclean 1331 PHONY += distclean 1531 1332 1532 distclean: mrproper 1333 distclean: mrproper 1533 @find . $(RCS_FIND_IGNORE) \ !! 1334 @find $(srctree) $(RCS_FIND_IGNORE) \ 1534 \( -name '*.orig' -o -name '* 1335 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1535 -o -name '*.bak' -o -name '#* 1336 -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1536 -o -name 'core' -o -name tags !! 1337 -o -name 'core' \) \ 1537 -o -name GPATH -o -name GRTAG << 1538 -type f -print | xargs rm -f 1338 -type f -print | xargs rm -f 1539 1339 1540 1340 1541 # Packaging of the kernel to various formats 1341 # Packaging of the kernel to various formats 1542 # ------------------------------------------- 1342 # --------------------------------------------------------------------------- >> 1343 # rpm target kept for backward compatibility >> 1344 package-dir := scripts/package 1543 1345 1544 %src-pkg: FORCE 1346 %src-pkg: FORCE 1545 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1347 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1546 %pkg: include/config/kernel.release FORCE 1348 %pkg: include/config/kernel.release FORCE 1547 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1349 $(Q)$(MAKE) $(build)=$(package-dir) $@ >> 1350 rpm: include/config/kernel.release FORCE >> 1351 $(Q)$(MAKE) $(build)=$(package-dir) $@ >> 1352 1548 1353 1549 # Brief documentation of the typical targets 1354 # Brief documentation of the typical targets used 1550 # ------------------------------------------- 1355 # --------------------------------------------------------------------------- 1551 1356 1552 boards := $(wildcard $(srctree)/arch/$(SRCARC 1357 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1553 boards := $(sort $(notdir $(boards))) 1358 boards := $(sort $(notdir $(boards))) 1554 board-dirs := $(dir $(wildcard $(srctree)/arc 1359 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1555 board-dirs := $(sort $(notdir $(board-dirs:/= 1360 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1556 1361 1557 PHONY += help 1362 PHONY += help 1558 help: 1363 help: 1559 @echo 'Cleaning targets:' 1364 @echo 'Cleaning targets:' 1560 @echo ' clean - Remove mo 1365 @echo ' clean - Remove most generated files but keep the config and' 1561 @echo ' enough bu 1366 @echo ' enough build support to build external modules' 1562 @echo ' mrproper - Remove al 1367 @echo ' mrproper - Remove all generated files + config + various backup files' 1563 @echo ' distclean - mrproper 1368 @echo ' distclean - mrproper + remove editor backup and patch files' 1564 @echo '' 1369 @echo '' >> 1370 @echo 'Configuration targets:' 1565 @$(MAKE) -f $(srctree)/scripts/kconfi 1371 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1566 @echo '' 1372 @echo '' 1567 @echo 'Other generic targets:' 1373 @echo 'Other generic targets:' 1568 @echo ' all - Build all 1374 @echo ' all - Build all targets marked with [*]' 1569 @echo '* vmlinux - Build the 1375 @echo '* vmlinux - Build the bare kernel' 1570 @echo '* modules - Build all 1376 @echo '* modules - Build all modules' 1571 @echo ' modules_install - Install a 1377 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1572 @echo ' vdso_install - Install u !! 1378 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' >> 1379 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1573 @echo ' dir/ - Build all 1380 @echo ' dir/ - Build all files in dir and below' 1574 @echo ' dir/file.[ois] - Build spe 1381 @echo ' dir/file.[ois] - Build specified target only' 1575 @echo ' dir/file.ll - Build the 1382 @echo ' dir/file.ll - Build the LLVM assembly file' 1576 @echo ' (requires 1383 @echo ' (requires compiler support for LLVM assembly generation)' 1577 @echo ' dir/file.lst - Build spe 1384 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1578 @echo ' (requires 1385 @echo ' (requires a recent binutils and recent build (System.map))' 1579 @echo ' dir/file.ko - Build mod 1386 @echo ' dir/file.ko - Build module including final link' 1580 @echo ' modules_prepare - Set up fo 1387 @echo ' modules_prepare - Set up for building external modules' 1581 @echo ' tags/TAGS - Generate 1388 @echo ' tags/TAGS - Generate tags file for editors' 1582 @echo ' cscope - Generate 1389 @echo ' cscope - Generate cscope index' 1583 @echo ' gtags - Generate 1390 @echo ' gtags - Generate GNU GLOBAL index' 1584 @echo ' kernelrelease - Output th 1391 @echo ' kernelrelease - Output the release version string (use with make -s)' 1585 @echo ' kernelversion - Output th 1392 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1586 @echo ' image_name - Output th 1393 @echo ' image_name - Output the image name (use with make -s)' 1587 @echo ' headers_install - Install s 1394 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1588 echo ' (default: 1395 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1589 echo '' 1396 echo '' 1590 @echo 'Static analysers:' 1397 @echo 'Static analysers:' 1591 @echo ' checkstack - Generate !! 1398 @echo ' checkstack - Generate a list of stack hogs' 1592 @echo ' with a st !! 1399 @echo ' namespacecheck - Name space analysis on compiled kernel' 1593 @echo ' versioncheck - Sanity ch 1400 @echo ' versioncheck - Sanity check on version.h usage' 1594 @echo ' includecheck - Check for 1401 @echo ' includecheck - Check for duplicate included header files' 1595 @echo ' export_report - List the 1402 @echo ' export_report - List the usages of all exported symbols' >> 1403 @echo ' headers_check - Sanity check on exported headers' 1596 @echo ' headerdep - Detect in 1404 @echo ' headerdep - Detect inclusion cycles in headers' 1597 @echo ' coccicheck - Check wit !! 1405 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 1598 @echo ' clang-analyzer - Check wit << 1599 @echo ' clang-tidy - Check wit << 1600 @echo '' << 1601 @echo 'Tools:' << 1602 @echo ' nsdeps - Generate << 1603 @echo '' 1406 @echo '' 1604 @echo 'Kernel selftest:' 1407 @echo 'Kernel selftest:' 1605 @echo ' kselftest - Build a !! 1408 @echo ' kselftest - Build and run kernel selftest (run as root)' 1606 @echo ' Build, !! 1409 @echo ' Build, install, and boot kernel before' 1607 @echo ' running !! 1410 @echo ' running kselftest on it' 1608 @echo ' Run as !! 1411 @echo ' kselftest-clean - Remove all generated kselftest files' 1609 @echo ' kselftest-all - Build k !! 1412 @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existed' 1610 @echo ' kselftest-install - Build a !! 1413 @echo ' .config.' 1611 @echo ' kselftest-clean - Remove << 1612 @echo ' kselftest-merge - Merge a << 1613 @echo ' kselfte << 1614 @echo '' << 1615 @echo 'Rust targets:' << 1616 @echo ' rustavailable - Checks wh << 1617 @echo ' available << 1618 @echo ' rustfmt - Reformat << 1619 @echo ' rustfmtcheck - Checks if << 1620 @echo ' is format << 1621 @echo ' rustdoc - Generate << 1622 @echo ' (requires << 1623 @echo ' rusttest - Runs the << 1624 @echo ' (requires << 1625 @echo ' rust-analyzer - Generate << 1626 @echo ' (requires << 1627 @echo ' dir/file.[os] - Build spe << 1628 @echo ' dir/file.rsi - Build mac << 1629 @echo ' Run with << 1630 @echo ' The outpu << 1631 @echo ' dir/file.ll - Build the << 1632 @echo '' 1414 @echo '' 1633 @$(if $(dtstree), \ << 1634 echo 'Devicetree:'; \ << 1635 echo '* dtbs - << 1636 echo ' dtbs_install - << 1637 echo ' dt_binding_check - << 1638 echo ' dt_binding_schema - << 1639 echo ' dtbs_check - << 1640 echo '') << 1641 << 1642 @echo 'Userspace tools targets:' 1415 @echo 'Userspace tools targets:' 1643 @echo ' use "make tools/help"' 1416 @echo ' use "make tools/help"' 1644 @echo ' or "cd tools; make help"' 1417 @echo ' or "cd tools; make help"' 1645 @echo '' 1418 @echo '' 1646 @echo 'Kernel packaging:' 1419 @echo 'Kernel packaging:' 1647 @$(MAKE) -f $(srctree)/scripts/Makefi !! 1420 @$(MAKE) $(build)=$(package-dir) help 1648 @echo '' 1421 @echo '' 1649 @echo 'Documentation targets:' 1422 @echo 'Documentation targets:' 1650 @$(MAKE) -f $(srctree)/Documentation/ 1423 @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1651 @echo '' 1424 @echo '' 1652 @echo 'Architecture-specific targets !! 1425 @echo 'Architecture specific targets ($(SRCARCH)):' 1653 @$(or $(archhelp),\ !! 1426 @$(if $(archhelp),$(archhelp),\ 1654 echo ' No architecture-speci !! 1427 echo ' No architecture specific help defined for $(SRCARCH)') 1655 @echo '' 1428 @echo '' 1656 @$(if $(boards), \ 1429 @$(if $(boards), \ 1657 $(foreach b, $(boards), \ 1430 $(foreach b, $(boards), \ 1658 printf " %-27s - Build for % !! 1431 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1659 echo '') 1432 echo '') 1660 @$(if $(board-dirs), \ 1433 @$(if $(board-dirs), \ 1661 $(foreach b, $(board-dirs), \ 1434 $(foreach b, $(board-dirs), \ 1662 printf " %-16s - Show %s-spe 1435 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1663 printf " %-16s - Show all of 1436 printf " %-16s - Show all of the above\\n" help-boards; \ 1664 echo '') 1437 echo '') 1665 1438 1666 @echo ' make V=n [targets] 1: ver !! 1439 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1667 @echo ' 2: giv !! 1440 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1668 @echo ' V=1 an << 1669 @echo ' make O=dir [targets] Locate 1441 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1670 @echo ' make C=1 [targets] Check !! 1442 @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)' 1671 @echo ' (spars << 1672 @echo ' make C=2 [targets] Force 1443 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1673 @echo ' make RECORDMCOUNT_WARN=1 [t 1444 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1674 @echo ' make W=n [targets] Enable !! 1445 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1675 @echo ' 1: warnings w 1446 @echo ' 1: warnings which may be relevant and do not occur too often' 1676 @echo ' 2: warnings w 1447 @echo ' 2: warnings which occur quite often but may still be relevant' 1677 @echo ' 3: more obscu 1448 @echo ' 3: more obscure warnings, can most likely be ignored' 1678 @echo ' c: extra chec << 1679 @echo ' e: warnings a << 1680 @echo ' Multiple leve 1449 @echo ' Multiple levels can be combined with W=12 or W=123' 1681 @$(if $(dtstree), \ << 1682 echo ' make CHECK_DTBS=1 [ta << 1683 echo ' This can be ap << 1684 ) << 1685 @echo '' 1450 @echo '' 1686 @echo 'Execute "make" or "make all" 1451 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1687 @echo 'For further info see the ./RE 1452 @echo 'For further info see the ./README file' 1688 1453 1689 1454 1690 help-board-dirs := $(addprefix help-,$(board- 1455 help-board-dirs := $(addprefix help-,$(board-dirs)) 1691 1456 1692 help-boards: $(help-board-dirs) 1457 help-boards: $(help-board-dirs) 1693 1458 1694 boards-per-dir = $(sort $(notdir $(wildcard $ 1459 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1695 1460 1696 $(help-board-dirs): help-%: 1461 $(help-board-dirs): help-%: 1697 @echo 'Architecture-specific targets !! 1462 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1698 @$(if $(boards-per-dir), \ 1463 @$(if $(boards-per-dir), \ 1699 $(foreach b, $(boards-per-dir 1464 $(foreach b, $(boards-per-dir), \ 1700 printf " %-24s - Build for % 1465 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1701 echo '') 1466 echo '') 1702 1467 1703 1468 1704 # Documentation targets 1469 # Documentation targets 1705 # ------------------------------------------- 1470 # --------------------------------------------------------------------------- 1706 DOC_TARGETS := xmldocs latexdocs pdfdocs html !! 1471 DOC_TARGETS := xmldocs sgmldocs psdocs latexdocs pdfdocs htmldocs mandocs installmandocs epubdocs cleandocs linkcheckdocs 1707 linkcheckdocs dochelp refcheck << 1708 PHONY += $(DOC_TARGETS) 1472 PHONY += $(DOC_TARGETS) 1709 $(DOC_TARGETS): !! 1473 $(DOC_TARGETS): scripts_basic FORCE 1710 $(Q)$(MAKE) $(build)=Documentation $@ 1474 $(Q)$(MAKE) $(build)=Documentation $@ 1711 1475 1712 << 1713 # Rust targets << 1714 # ------------------------------------------- << 1715 << 1716 # "Is Rust available?" target << 1717 PHONY += rustavailable << 1718 rustavailable: << 1719 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1720 << 1721 # Documentation target << 1722 # << 1723 # Using the singular to avoid running afoul o << 1724 PHONY += rustdoc << 1725 rustdoc: prepare << 1726 $(Q)$(MAKE) $(build)=rust $@ << 1727 << 1728 # Testing target << 1729 PHONY += rusttest << 1730 rusttest: prepare << 1731 $(Q)$(MAKE) $(build)=rust $@ << 1732 << 1733 # Formatting targets << 1734 PHONY += rustfmt rustfmtcheck << 1735 << 1736 # We skip `rust/alloc` since we want to minim << 1737 # << 1738 # We match using absolute paths since `find` << 1739 # when matching, which is a problem when e.g. << 1740 # We `grep` afterwards in order to remove the << 1741 rustfmt: << 1742 $(Q)find $(abs_srctree) -type f -name << 1743 -o -path $(abs_srctree)/rust/ << 1744 -o -path $(abs_objtree)/rust/ << 1745 | grep -Fv $(abs_srctree)/rus << 1746 | grep -Fv $(abs_objtree)/rus << 1747 | grep -Fv generated \ << 1748 | xargs $(RUSTFMT) $(rustfmt_ << 1749 << 1750 rustfmtcheck: rustfmt_flags = --check << 1751 rustfmtcheck: rustfmt << 1752 << 1753 # Misc << 1754 # ------------------------------------------- << 1755 << 1756 PHONY += misc-check << 1757 misc-check: << 1758 $(Q)$(srctree)/scripts/misc-check << 1759 << 1760 all: misc-check << 1761 << 1762 PHONY += scripts_gdb << 1763 scripts_gdb: prepare0 << 1764 $(Q)$(MAKE) $(build)=scripts/gdb << 1765 $(Q)ln -fsn $(abspath $(srctree)/scri << 1766 << 1767 ifdef CONFIG_GDB_SCRIPTS << 1768 all: scripts_gdb << 1769 endif << 1770 << 1771 else # KBUILD_EXTMOD 1476 else # KBUILD_EXTMOD 1772 1477 1773 filechk_kernel.release = echo $(KERNELRELEASE << 1774 << 1775 ### 1478 ### 1776 # External module support. 1479 # External module support. 1777 # When building external modules the kernel u 1480 # When building external modules the kernel used as basis is considered 1778 # read-only, and no consistency checks are ma 1481 # read-only, and no consistency checks are made and the make 1779 # system is not used on the basis kernel. If 1482 # system is not used on the basis kernel. If updates are required 1780 # in the basis kernel ordinary make commands !! 1483 # in the basis kernel ordinary make commands (without M=...) must >> 1484 # be used. >> 1485 # >> 1486 # The following are the only valid targets when building external >> 1487 # modules. >> 1488 # make M=dir clean Delete all automatically generated files >> 1489 # make M=dir modules Make all modules in specified dir >> 1490 # make M=dir Same as 'make M=dir modules' >> 1491 # make M=dir modules_install >> 1492 # Install the modules built in the module directory >> 1493 # Assumes install directory is already created 1781 1494 1782 # We are always building only modules. !! 1495 # We are always building modules 1783 KBUILD_BUILTIN := << 1784 KBUILD_MODULES := 1 1496 KBUILD_MODULES := 1 >> 1497 PHONY += crmodverdir >> 1498 crmodverdir: >> 1499 $(cmd_crmodverdir) >> 1500 >> 1501 PHONY += $(objtree)/Module.symvers >> 1502 $(objtree)/Module.symvers: >> 1503 @test -e $(objtree)/Module.symvers || ( \ >> 1504 echo; \ >> 1505 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ >> 1506 echo " is missing; modules will have no dependencies and modversions."; \ >> 1507 echo ) >> 1508 >> 1509 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) >> 1510 PHONY += $(module-dirs) modules >> 1511 $(module-dirs): crmodverdir $(objtree)/Module.symvers >> 1512 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1785 1513 1786 build-dir := $(KBUILD_EXTMOD) !! 1514 modules: $(module-dirs) >> 1515 @$(kecho) ' Building modules, stage 2.'; >> 1516 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1787 1517 1788 compile_commands.json: $(extmod_prefix)compil !! 1518 PHONY += modules_install 1789 PHONY += compile_commands.json !! 1519 modules_install: _emodinst_ _emodinst_post 1790 1520 1791 clean-dirs := $(KBUILD_EXTMOD) !! 1521 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1792 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1522 PHONY += _emodinst_ 1793 $(KBUILD_EXTMOD)/compile_commands.jso !! 1523 _emodinst_: 1794 !! 1524 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1795 PHONY += prepare !! 1525 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1796 # now expand this into a simple variable to r !! 1526 1797 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT !! 1527 PHONY += _emodinst_post 1798 prepare: !! 1528 _emodinst_post: _emodinst_ 1799 @if [ "$(CC_VERSION_TEXT)" != "$(CONF !! 1529 $(call cmd,depmod) 1800 echo >&2 "warning: the compil !! 1530 1801 echo >&2 " The kernel was bu !! 1531 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1802 echo >&2 " You are using: !! 1532 1803 fi !! 1533 PHONY += $(clean-dirs) clean >> 1534 $(clean-dirs): >> 1535 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) >> 1536 >> 1537 clean: rm-dirs := $(MODVERDIR) >> 1538 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1804 1539 1805 PHONY += help 1540 PHONY += help 1806 help: 1541 help: 1807 @echo ' Building external modules.' 1542 @echo ' Building external modules.' 1808 @echo ' Syntax: make -C path/to/ker 1543 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1809 @echo '' 1544 @echo '' 1810 @echo ' modules - default t 1545 @echo ' modules - default target, build the module(s)' 1811 @echo ' modules_install - install t 1546 @echo ' modules_install - install the module' 1812 @echo ' clean - remove ge 1547 @echo ' clean - remove generated files in module directory only' 1813 @echo ' rust-analyzer - generate << 1814 @echo '' 1548 @echo '' 1815 1549 1816 ifndef CONFIG_MODULES !! 1550 # Dummies... 1817 modules modules_install: __external_modules_e !! 1551 PHONY += prepare scripts 1818 __external_modules_error: !! 1552 prepare: ; 1819 @echo >&2 '***' !! 1553 scripts: ; 1820 @echo >&2 '*** The present kernel dis << 1821 @echo >&2 '*** You cannot build or in << 1822 @echo >&2 '***' << 1823 @false << 1824 endif << 1825 << 1826 endif # KBUILD_EXTMOD 1554 endif # KBUILD_EXTMOD 1827 1555 1828 # ------------------------------------------- << 1829 # Modules << 1830 << 1831 PHONY += modules modules_install modules_sign << 1832 << 1833 modules_install: << 1834 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1835 sign-only=$(if $(filter modules_insta << 1836 << 1837 ifeq ($(CONFIG_MODULE_SIG),y) << 1838 # modules_sign is a subset of modules_install << 1839 # 'make modules_install modules_sign' is equi << 1840 modules_sign: modules_install << 1841 @: << 1842 else << 1843 modules_sign: << 1844 @echo >&2 '***' << 1845 @echo >&2 '*** CONFIG_MODULE_SIG is d << 1846 @echo >&2 '***' << 1847 @false << 1848 endif << 1849 << 1850 ifdef CONFIG_MODULES << 1851 << 1852 $(MODORDER): $(build-dir) << 1853 @: << 1854 << 1855 # KBUILD_MODPOST_NOFINAL can be set to skip t << 1856 # This is solely useful to speed up test comp << 1857 modules: modpost << 1858 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1859 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1860 endif << 1861 << 1862 PHONY += modules_check << 1863 modules_check: $(MODORDER) << 1864 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1865 << 1866 else # CONFIG_MODULES << 1867 << 1868 modules: << 1869 @: << 1870 << 1871 KBUILD_MODULES := << 1872 << 1873 endif # CONFIG_MODULES << 1874 << 1875 PHONY += modpost << 1876 modpost: $(if $(single-build),, $(if $(KBUILD << 1877 $(if $(KBUILD_MODULES), modules_chec << 1878 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1879 << 1880 # Single targets << 1881 # ------------------------------------------- << 1882 # To build individual files in subdirectories << 1883 # << 1884 # make foo/bar/baz.s << 1885 # << 1886 # The supported suffixes for single-target ar << 1887 # << 1888 # To build only under specific subdirectories << 1889 # << 1890 # make foo/bar/baz/ << 1891 << 1892 ifdef single-build << 1893 << 1894 # .ko is special because modpost is needed << 1895 single-ko := $(sort $(filter %.ko, $(MAKECMDG << 1896 single-no-ko := $(filter-out $(single-ko), $( << 1897 $(foreach x, o mod, $(patsubs << 1898 << 1899 $(single-ko): single_modules << 1900 @: << 1901 $(single-no-ko): $(build-dir) << 1902 @: << 1903 << 1904 # Remove MODORDER when done because it is not << 1905 PHONY += single_modules << 1906 single_modules: $(single-no-ko) modules_prepa << 1907 $(Q){ $(foreach m, $(single-ko), echo << 1908 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1909 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1910 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1911 endif << 1912 $(Q)rm -f $(MODORDER) << 1913 << 1914 single-goals := $(addprefix $(build-dir)/, $( << 1915 << 1916 KBUILD_MODULES := 1 << 1917 << 1918 endif << 1919 << 1920 # Preset locale variables to speed up the bui << 1921 # tweaks to this spot to avoid wrong language << 1922 # make menuconfig etc. << 1923 # Error messages still appears in the origina << 1924 PHONY += $(build-dir) << 1925 $(build-dir): prepare << 1926 $(Q)$(MAKE) $(build)=$@ need-builtin= << 1927 << 1928 clean-dirs := $(addprefix _clean_, $(clean-di << 1929 PHONY += $(clean-dirs) clean << 1930 $(clean-dirs): << 1931 $(Q)$(MAKE) $(clean)=$(patsubst _clea << 1932 << 1933 clean: $(clean-dirs) 1556 clean: $(clean-dirs) >> 1557 $(call cmd,rmdirs) 1934 $(call cmd,rmfiles) 1558 $(call cmd,rmfiles) 1935 @find $(or $(KBUILD_EXTMOD), .) $(RCS !! 1559 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1936 \( -name '*.[aios]' -o -name !! 1560 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1937 -o -name '*.ko.*' \ 1561 -o -name '*.ko.*' \ 1938 -o -name '*.dtb' -o -name '*. !! 1562 -o -name '*.dwo' \ 1939 -o -name '*.dtb.S' -o -name ' !! 1563 -o -name '*.su' \ 1940 -o -name '*.dt.yaml' -o -name << 1941 -o -name '*.dwo' -o -name '*. << 1942 -o -name '*.su' -o -name '*.m << 1943 -o -name '.*.d' -o -name '.*. 1564 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1944 -o -name '*.lex.c' -o -name ' << 1945 -o -name '*.asn1.[ch]' \ << 1946 -o -name '*.symtypes' -o -nam 1565 -o -name '*.symtypes' -o -name 'modules.order' \ >> 1566 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1947 -o -name '*.c.[012]*.*' \ 1567 -o -name '*.c.[012]*.*' \ 1948 -o -name '*.ll' \ 1568 -o -name '*.ll' \ 1949 -o -name '*.gcno' \ !! 1569 -o -name '*.gcno' \) -type f -print | xargs rm -f 1950 -o -name '*.*.symversions' \) << 1951 -o -name '.tmp_*' -print \ << 1952 | xargs rm -rf << 1953 1570 1954 # Generate tags for editors 1571 # Generate tags for editors 1955 # ------------------------------------------- 1572 # --------------------------------------------------------------------------- 1956 quiet_cmd_tags = GEN $@ 1573 quiet_cmd_tags = GEN $@ 1957 cmd_tags = $(BASH) $(srctree)/scripts/t !! 1574 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1958 1575 1959 tags TAGS cscope gtags: FORCE 1576 tags TAGS cscope gtags: FORCE 1960 $(call cmd,tags) 1577 $(call cmd,tags) 1961 1578 1962 # Generate rust-project.json (a file that des << 1963 # Rust projects) for rust-analyzer (an implem << 1964 # Protocol). << 1965 PHONY += rust-analyzer << 1966 rust-analyzer: << 1967 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1968 $(Q)$(MAKE) $(build)=rust $@ << 1969 << 1970 # Script to generate missing namespace depend << 1971 # ------------------------------------------- << 1972 << 1973 PHONY += nsdeps << 1974 nsdeps: export KBUILD_NSDEPS=1 << 1975 nsdeps: modules << 1976 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1977 << 1978 # Clang Tooling << 1979 # ------------------------------------------- << 1980 << 1981 quiet_cmd_gen_compile_commands = GEN $@ << 1982 cmd_gen_compile_commands = $(PYTHON3) $ << 1983 << 1984 $(extmod_prefix)compile_commands.json: $(srct << 1985 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K << 1986 $(if $(CONFIG_MODULES), $(MODORDER)) << 1987 $(call if_changed,gen_compile_command << 1988 << 1989 targets += $(extmod_prefix)compile_commands.j << 1990 << 1991 PHONY += clang-tidy clang-analyzer << 1992 << 1993 ifdef CONFIG_CC_IS_CLANG << 1994 quiet_cmd_clang_tools = CHECK $< << 1995 cmd_clang_tools = $(PYTHON3) $(srctree) << 1996 << 1997 clang-tidy clang-analyzer: $(extmod_prefix)co << 1998 $(call cmd,clang_tools) << 1999 else << 2000 clang-tidy clang-analyzer: << 2001 @echo "$@ requires CC=clang" >&2 << 2002 @false << 2003 endif << 2004 << 2005 # Scripts to check various things for consist 1579 # Scripts to check various things for consistency 2006 # ------------------------------------------- 1580 # --------------------------------------------------------------------------- 2007 1581 2008 PHONY += includecheck versioncheck coccicheck !! 1582 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 2009 1583 2010 includecheck: 1584 includecheck: 2011 find $(srctree)/* $(RCS_FIND_IGNORE) 1585 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2012 -name '*.[hcS]' -type f -prin 1586 -name '*.[hcS]' -type f -print | sort \ 2013 | xargs $(PERL) -w $(srctree) 1587 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 2014 1588 2015 versioncheck: 1589 versioncheck: 2016 find $(srctree)/* $(RCS_FIND_IGNORE) 1590 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2017 -name '*.[hcS]' -type f -prin 1591 -name '*.[hcS]' -type f -print | sort \ 2018 | xargs $(PERL) -w $(srctree) 1592 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 2019 1593 2020 coccicheck: 1594 coccicheck: 2021 $(Q)$(BASH) $(srctree)/scripts/$@ !! 1595 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ >> 1596 >> 1597 namespacecheck: >> 1598 $(PERL) $(srctree)/scripts/namespace.pl 2022 1599 2023 export_report: 1600 export_report: 2024 $(PERL) $(srctree)/scripts/export_rep 1601 $(PERL) $(srctree)/scripts/export_report.pl 2025 1602 >> 1603 endif #ifeq ($(config-targets),1) >> 1604 endif #ifeq ($(mixed-targets),1) >> 1605 2026 PHONY += checkstack kernelrelease kernelversi 1606 PHONY += checkstack kernelrelease kernelversion image_name 2027 1607 2028 # UML needs a little special treatment here. 1608 # UML needs a little special treatment here. It wants to use the host 2029 # toolchain, so needs $(SUBARCH) passed to ch 1609 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 2030 # else wants $(ARCH), including people doing 1610 # else wants $(ARCH), including people doing cross-builds, which means 2031 # that $(SUBARCH) doesn't work here. 1611 # that $(SUBARCH) doesn't work here. 2032 ifeq ($(ARCH), um) 1612 ifeq ($(ARCH), um) 2033 CHECKSTACK_ARCH := $(SUBARCH) 1613 CHECKSTACK_ARCH := $(SUBARCH) 2034 else 1614 else 2035 CHECKSTACK_ARCH := $(ARCH) 1615 CHECKSTACK_ARCH := $(ARCH) 2036 endif 1616 endif 2037 MINSTACKSIZE ?= 100 << 2038 checkstack: 1617 checkstack: 2039 $(OBJDUMP) -d vmlinux $$(find . -name 1618 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 2040 $(PERL) $(srctree)/scripts/checkstack !! 1619 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 2041 1620 2042 kernelrelease: 1621 kernelrelease: 2043 @$(filechk_kernel.release) !! 1622 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 2044 1623 2045 kernelversion: 1624 kernelversion: 2046 @echo $(KERNELVERSION) 1625 @echo $(KERNELVERSION) 2047 1626 2048 image_name: 1627 image_name: 2049 @echo $(KBUILD_IMAGE) 1628 @echo $(KBUILD_IMAGE) 2050 1629 2051 PHONY += run-command !! 1630 # Clear a bunch of variables before executing the submake 2052 run-command: !! 1631 tools/: FORCE 2053 $(Q)$(KBUILD_RUN_COMMAND) !! 1632 $(Q)mkdir -p $(objtree)/tools >> 1633 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ >> 1634 >> 1635 tools/%: FORCE >> 1636 $(Q)mkdir -p $(objtree)/tools >> 1637 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ $* >> 1638 >> 1639 # Single targets >> 1640 # --------------------------------------------------------------------------- >> 1641 # Single targets are compatible with: >> 1642 # - build with mixed source and output >> 1643 # - build with separate output dir 'make O=...' >> 1644 # - external modules >> 1645 # >> 1646 # target-dir => where to store outputfile >> 1647 # build-dir => directory in kernel source tree to use >> 1648 >> 1649 ifeq ($(KBUILD_EXTMOD),) >> 1650 build-dir = $(patsubst %/,%,$(dir $@)) >> 1651 target-dir = $(dir $@) >> 1652 else >> 1653 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) >> 1654 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) >> 1655 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) >> 1656 endif >> 1657 >> 1658 %.s: %.c prepare scripts FORCE >> 1659 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1660 %.i: %.c prepare scripts FORCE >> 1661 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1662 %.o: %.c prepare scripts FORCE >> 1663 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1664 %.lst: %.c prepare scripts FORCE >> 1665 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1666 %.s: %.S prepare scripts FORCE >> 1667 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1668 %.o: %.S prepare scripts FORCE >> 1669 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1670 %.symtypes: %.c prepare scripts FORCE >> 1671 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1672 %.ll: %.c prepare scripts FORCE >> 1673 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1674 >> 1675 # Modules >> 1676 /: prepare scripts FORCE >> 1677 $(cmd_crmodverdir) >> 1678 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1679 $(build)=$(build-dir) >> 1680 # Make sure the latest headers are built for Documentation >> 1681 Documentation/ samples/: headers_install >> 1682 %/: prepare scripts FORCE >> 1683 $(cmd_crmodverdir) >> 1684 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1685 $(build)=$(build-dir) >> 1686 %.ko: prepare scripts FORCE >> 1687 $(cmd_crmodverdir) >> 1688 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1689 $(build)=$(build-dir) $(@:.ko=.o) >> 1690 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1691 >> 1692 # FIXME Should go into a make.lib or something >> 1693 # =========================================================================== >> 1694 >> 1695 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) >> 1696 cmd_rmdirs = rm -rf $(rm-dirs) 2054 1697 2055 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 1698 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2056 cmd_rmfiles = rm -rf $(rm-files) !! 1699 cmd_rmfiles = rm -f $(rm-files) 2057 1700 2058 # read saved command lines for existing targe !! 1701 # Run depmod only if we have System.map and depmod is executable 2059 existing-targets := $(wildcard $(sort $(targe !! 1702 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) >> 1703 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ >> 1704 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" 2060 1705 2061 -include $(foreach f,$(existing-targets),$(di !! 1706 # Create temporary dir for module support files >> 1707 # clean it up only when building all modules >> 1708 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ >> 1709 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) >> 1710 >> 1711 # read all saved command lines >> 1712 >> 1713 targets := $(wildcard $(sort $(targets))) >> 1714 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) >> 1715 >> 1716 ifneq ($(cmd_files),) >> 1717 $(cmd_files): ; # Do not try to update included dependency files >> 1718 include $(cmd_files) >> 1719 endif 2062 1720 2063 endif # config-build !! 1721 endif # skip-makefile 2064 endif # mixed-build << 2065 endif # need-sub-make << 2066 1722 2067 PHONY += FORCE 1723 PHONY += FORCE 2068 FORCE: 1724 FORCE: 2069 1725 2070 # Declare the contents of the PHONY variable !! 1726 # Declare the contents of the .PHONY variable as phony. We keep that 2071 # information in a variable so we can use it 1727 # information in a variable so we can use it in if_changed and friends. 2072 .PHONY: $(PHONY) 1728 .PHONY: $(PHONY)
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