1 # SPDX-License-Identifier: GPL-2.0 !! 1 VERSION = 4 2 VERSION = 6 !! 2 PATCHLEVEL = 11 3 PATCHLEVEL = 12 !! 3 SUBLEVEL = 12 4 SUBLEVEL = 0 !! 4 EXTRAVERSION = 5 EXTRAVERSION = -rc7 !! 5 NAME = Fearless Coyote 6 NAME = Baby Opossum Posse << 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 << 103 # Call a source code checker (by default, "spa << 104 # C compilation. << 105 # << 106 # Use 'make C=1' to enable checking of only re << 107 # Use 'make C=2' to enable checking of *all* s << 108 # of whether they are re-compiled or not. << 109 # << 110 # See the file "Documentation/dev-tools/sparse << 111 # including where to get the "sparse" utility. << 112 << 113 ifeq ("$(origin C)", "command line") << 114 KBUILD_CHECKSRC = $(C) << 115 endif << 116 ifndef KBUILD_CHECKSRC << 117 KBUILD_CHECKSRC = 0 << 118 endif << 119 << 120 export KBUILD_CHECKSRC << 121 << 122 # Enable "clippy" (a linter) as part of the Ru << 123 # << 124 # Use 'make CLIPPY=1' to enable it. << 125 ifeq ("$(origin CLIPPY)", "command line") << 126 KBUILD_CLIPPY := $(CLIPPY) << 127 endif << 128 << 129 export KBUILD_CLIPPY << 130 << 131 # Use make M=dir or set the environment variab << 132 # directory of external module to build. Setti << 133 ifeq ("$(origin M)", "command line") << 134 KBUILD_EXTMOD := $(M) << 135 endif << 136 86 137 $(if $(word 2, $(KBUILD_EXTMOD)), \ !! 87 ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 138 $(error building multiple external mod !! 88 ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) 139 !! 89 quiet=silent_ 140 $(foreach x, % :, $(if $(findstring $x, $(KBUI !! 90 tools_silent=s 141 $(error module directory path cannot c !! 91 endif 142 !! 92 else # make-3.8x 143 # Remove trailing slashes !! 93 ifneq ($(filter s% -s%,$(MAKEFLAGS)),) 144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) !! 94 quiet=silent_ 145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM !! 95 tools_silent=-s 146 endif 96 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 := $(W) << 155 endif 97 endif 156 98 157 export KBUILD_EXTRA_WARN !! 99 export quiet Q KBUILD_VERBOSE 158 100 159 # Kbuild will save output files in the current !! 101 # kbuild supports saving output files in a separate directory. 160 # This does not need to match to the root of t !! 102 # To locate output files in a separate directory two syntaxes are supported. 161 # !! 103 # In both cases the working directory must be the root of the kernel src. 162 # For example, you can do this: << 163 # << 164 # cd /dir/to/store/output/files; make -f /dir << 165 # << 166 # If you want to save output files in a differ << 167 # two syntaxes to specify it. << 168 # << 169 # 1) O= 104 # 1) O= 170 # Use "make O=dir/to/store/output/files/" 105 # Use "make O=dir/to/store/output/files/" 171 # 106 # 172 # 2) Set KBUILD_OUTPUT 107 # 2) Set KBUILD_OUTPUT 173 # Set the environment variable KBUILD_OUTPUT t !! 108 # Set the environment variable KBUILD_OUTPUT to point to the directory 174 # export KBUILD_OUTPUT=dir/to/store/output/fil !! 109 # where the output files shall be placed. >> 110 # export KBUILD_OUTPUT=dir/to/store/output/files/ >> 111 # make 175 # 112 # 176 # The O= assignment takes precedence over the 113 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 177 # variable. 114 # variable. 178 115 179 # Do we want to change the working directory? !! 116 # KBUILD_SRC is set on invocation of make in OBJ directory >> 117 # KBUILD_SRC is not intended to be used by the regular user (for now) >> 118 ifeq ($(KBUILD_SRC),) >> 119 >> 120 # OK, Make called in directory where kernel src resides >> 121 # Do we want to locate output files in a separate directory? 180 ifeq ("$(origin O)", "command line") 122 ifeq ("$(origin O)", "command line") 181 KBUILD_OUTPUT := $(O) 123 KBUILD_OUTPUT := $(O) 182 endif 124 endif 183 125 184 ifneq ($(KBUILD_OUTPUT),) !! 126 # That's our default target when none is given on the command line 185 # $(realpath ...) gets empty if the path does !! 127 PHONY := _all 186 $(shell mkdir -p "$(KBUILD_OUTPUT)") !! 128 _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 $(error source directory cannot contain spaces << 194 endif << 195 << 196 export sub_make_done := 1 << 197 << 198 endif # sub_make_done << 199 129 200 ifeq ($(abs_objtree),$(CURDIR)) !! 130 # Cancel implicit rules on top Makefile 201 # Suppress "Entering directory ..." if we are !! 131 $(CURDIR)/Makefile Makefile: ; 202 no-print-directory := --no-print-directory << 203 else << 204 # Recursion to show "Entering directory ..." << 205 need-sub-make := 1 << 206 endif << 207 132 208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 133 ifneq ($(words $(subst :, ,$(CURDIR))), 1) 209 # If --no-print-directory is unset, recurse on !! 134 $(error main directory cannot contain spaces nor colons) 210 # You may end up recursing into __sub-make twi << 211 # behavior change in GNU Make 4.4.1. << 212 need-sub-make := 1 << 213 endif 135 endif 214 136 215 ifeq ($(need-sub-make),1) !! 137 ifneq ($(KBUILD_OUTPUT),) >> 138 # Invoke a second make in the output directory, passing relevant variables >> 139 # check that the output directory actually exists >> 140 saved-output := $(KBUILD_OUTPUT) >> 141 KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ >> 142 && /bin/pwd) >> 143 $(if $(KBUILD_OUTPUT),, \ >> 144 $(error failed to create output directory "$(saved-output)")) 216 145 217 PHONY += $(MAKECMDGOALS) __sub-make !! 146 PHONY += $(MAKECMDGOALS) sub-make 218 147 219 $(filter-out $(this-makefile), $(MAKECMDGOALS) !! 148 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 220 @: 149 @: 221 150 222 # Invoke a second make in the output directory !! 151 sub-make: 223 __sub-make: !! 152 $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 153 -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 225 -f $(abs_srctree)/Makefile $(MAKECMDGO << 226 154 227 else # need-sub-make !! 155 # Leave processing to above invocation of make >> 156 skip-makefile := 1 >> 157 endif # ifneq ($(KBUILD_OUTPUT),) >> 158 endif # ifeq ($(KBUILD_SRC),) 228 159 229 # We process the rest of the Makefile if this 160 # We process the rest of the Makefile if this is the final invocation of make >> 161 ifeq ($(skip-makefile),) 230 162 231 ifeq ($(abs_srctree),$(abs_objtree)) !! 163 # Do not print "Entering directory ...", 232 # building in the source tree !! 164 # but we want to display it when entering to the output directory 233 srctree := . !! 165 # so that IDEs/editors are able to understand relative filenames. 234 building_out_of_srctree := !! 166 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 := $(abs_srctree) << 247 endif << 248 167 249 objtree := . !! 168 # Call a source code checker (by default, "sparse") as part of the 250 !! 169 # C compilation. 251 VPATH := !! 170 # >> 171 # Use 'make C=1' to enable checking of only re-compiled files. >> 172 # Use 'make C=2' to enable checking of *all* source files, regardless >> 173 # of whether they are re-compiled or not. >> 174 # >> 175 # See the file "Documentation/sparse.txt" for more details, including >> 176 # where to get the "sparse" utility. 252 177 253 ifeq ($(KBUILD_EXTMOD),) !! 178 ifeq ("$(origin C)", "command line") 254 ifdef building_out_of_srctree !! 179 KBUILD_CHECKSRC = $(C) 255 VPATH := $(srctree) << 256 endif << 257 endif 180 endif 258 !! 181 ifndef KBUILD_CHECKSRC 259 export building_out_of_srctree srctree objtree !! 182 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 $(no-dot-config-targets << 289 need-config := << 290 endif << 291 endif 183 endif 292 184 293 ifneq ($(filter $(no-sync-config-targets), $(M !! 185 # Use make M=dir to specify directory of external module to build 294 ifeq ($(filter-out $(no-sync-config-target !! 186 # Old syntax make ... SUBDIRS=$PWD is still supported 295 may-sync-config := !! 187 # Setting the environment variable KBUILD_EXTMOD take precedence 296 endif !! 188 ifdef SUBDIRS >> 189 KBUILD_EXTMOD ?= $(SUBDIRS) 297 endif 190 endif 298 191 299 need-compiler := $(may-sync-config) !! 192 ifeq ("$(origin M)", "command line") 300 !! 193 KBUILD_EXTMOD := $(M) 301 ifneq ($(KBUILD_EXTMOD),) << 302 may-sync-config := << 303 endif 194 endif 304 195 >> 196 # If building an external module we do not care about the all: rule >> 197 # but instead _all depend on modules >> 198 PHONY += all 305 ifeq ($(KBUILD_EXTMOD),) 199 ifeq ($(KBUILD_EXTMOD),) 306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 200 _all: all 307 config-build := 1 !! 201 else 308 ifneq ($(words $(MAKECMDGOALS)),1) !! 202 _all: modules 309 mixed-build := 1 << 310 endif << 311 endif << 312 endif << 313 << 314 # We cannot build single targets and the other << 315 ifneq ($(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 203 endif 328 204 329 # install and modules_install need also be pro !! 205 ifeq ($(KBUILD_SRC),) 330 ifneq ($(filter install,$(MAKECMDGOALS)),) !! 206 # building in the source tree 331 ifneq ($(filter modules_install,$(MAKECMDG !! 207 srctree := . 332 mixed-build := 1 !! 208 else 333 endif !! 209 ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) >> 210 # building in a subdirectory of the source tree >> 211 srctree := .. >> 212 else >> 213 srctree := $(KBUILD_SRC) >> 214 endif 334 endif 215 endif >> 216 objtree := . >> 217 src := $(srctree) >> 218 obj := $(objtree) 335 219 336 ifdef mixed-build !! 220 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 << 354 include $(srctree)/scripts/Kbuild.include << 355 221 356 # Read KERNELRELEASE from include/config/kerne !! 222 export srctree objtree VPATH 357 KERNELRELEASE = $(call read-file, include/conf << 358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. << 359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA << 360 223 361 include $(srctree)/scripts/subarch.include !! 224 # SUBARCH tells the usermode build what the underlying arch is. That is set >> 225 # first, and if a usermode build is happening, the "ARCH=um" on the command >> 226 # line overrides the setting of ARCH below. If a native build is happening, >> 227 # then ARCH is assigned, getting whatever value it gets normally, and >> 228 # SUBARCH is subsequently ignored. >> 229 >> 230 SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ >> 231 -e s/sun4u/sparc64/ \ >> 232 -e s/arm.*/arm/ -e s/sa110/arm/ \ >> 233 -e s/s390x/s390/ -e s/parisc64/parisc/ \ >> 234 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ >> 235 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) 362 236 363 # Cross compiling and selecting different set 237 # Cross compiling and selecting different set of gcc/bin-utils 364 # -------------------------------------------- 238 # --------------------------------------------------------------------------- 365 # 239 # 366 # When performing cross compilation for other 240 # When performing cross compilation for other architectures ARCH shall be set 367 # to the target architecture. (See arch/* for 241 # to the target architecture. (See arch/* for the possibilities). 368 # ARCH can be set during invocation of make: 242 # ARCH can be set during invocation of make: 369 # make ARCH=arm64 !! 243 # make ARCH=ia64 370 # Another way is to have ARCH set in the envir 244 # Another way is to have ARCH set in the environment. 371 # The default ARCH is the host where make is e 245 # The default ARCH is the host where make is executed. 372 246 373 # CROSS_COMPILE specify the prefix used for al 247 # CROSS_COMPILE specify the prefix used for all executables used 374 # during compilation. Only gcc and related bin 248 # during compilation. Only gcc and related bin-utils executables 375 # are prefixed with $(CROSS_COMPILE). 249 # are prefixed with $(CROSS_COMPILE). 376 # CROSS_COMPILE can be set on the command line 250 # CROSS_COMPILE can be set on the command line 377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 251 # make CROSS_COMPILE=ia64-linux- 378 # Alternatively CROSS_COMPILE can be set in th 252 # Alternatively CROSS_COMPILE can be set in the environment. >> 253 # A third alternative is to store a setting in .config so that plain >> 254 # "make" in the configured kernel build directory always uses that. 379 # Default value for CROSS_COMPILE is not to pr 255 # Default value for CROSS_COMPILE is not to prefix executables 380 # Note: Some architectures assign CROSS_COMPIL 256 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 381 ARCH ?= $(SUBARCH) 257 ARCH ?= $(SUBARCH) >> 258 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) 382 259 383 # Architecture as present in compile.h 260 # Architecture as present in compile.h 384 UTS_MACHINE := $(ARCH) 261 UTS_MACHINE := $(ARCH) 385 SRCARCH := $(ARCH) 262 SRCARCH := $(ARCH) 386 263 387 # Additional ARCH settings for x86 264 # Additional ARCH settings for x86 388 ifeq ($(ARCH),i386) 265 ifeq ($(ARCH),i386) 389 SRCARCH := x86 266 SRCARCH := x86 390 endif 267 endif 391 ifeq ($(ARCH),x86_64) 268 ifeq ($(ARCH),x86_64) 392 SRCARCH := x86 269 SRCARCH := x86 393 endif 270 endif 394 271 395 # Additional ARCH settings for sparc 272 # Additional ARCH settings for sparc 396 ifeq ($(ARCH),sparc32) 273 ifeq ($(ARCH),sparc32) 397 SRCARCH := sparc 274 SRCARCH := sparc 398 endif 275 endif 399 ifeq ($(ARCH),sparc64) 276 ifeq ($(ARCH),sparc64) 400 SRCARCH := sparc 277 SRCARCH := sparc 401 endif 278 endif 402 279 403 # Additional ARCH settings for parisc !! 280 # Additional ARCH settings for sh 404 ifeq ($(ARCH),parisc64) !! 281 ifeq ($(ARCH),sh64) 405 SRCARCH := parisc !! 282 SRCARCH := sh 406 endif 283 endif 407 284 408 export cross_compiling := !! 285 # Additional ARCH settings for tile 409 ifneq ($(SRCARCH),$(SUBARCH)) !! 286 ifeq ($(ARCH),tilepro) 410 cross_compiling := 1 !! 287 SRCARCH := tile 411 endif 288 endif >> 289 ifeq ($(ARCH),tilegx) >> 290 SRCARCH := tile >> 291 endif >> 292 >> 293 # Where to locate arch specific headers >> 294 hdr-arch := $(SRCARCH) 412 295 413 KCONFIG_CONFIG ?= .config 296 KCONFIG_CONFIG ?= .config 414 export KCONFIG_CONFIG 297 export KCONFIG_CONFIG 415 298 416 # SHELL used by kbuild 299 # SHELL used by kbuild 417 CONFIG_SHELL := sh !! 300 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ >> 301 else if [ -x /bin/bash ]; then echo /bin/bash; \ >> 302 else echo sh; fi ; fi) >> 303 >> 304 HOSTCC = gcc >> 305 HOSTCXX = g++ >> 306 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 >> 307 HOSTCXXFLAGS = -O2 >> 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 418 313 419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS !! 314 # Decide whether to build built-in, modular, or both. 420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG !! 315 # Normally, just do built-in. 421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d !! 316 >> 317 KBUILD_MODULES := >> 318 KBUILD_BUILTIN := 1 >> 319 >> 320 # If we have only "make modules", don't compile built-in objects. >> 321 # When we're building modules with modversions, we need to consider >> 322 # the built-in objects during the descend as well, in order to >> 323 # make sure the checksums are up to date before we record them. 422 324 423 ifneq ($(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/uapi \ 541 $(if $(building_out_of_srctree !! 392 -I$(objtree)/arch/$(hdr-arch)/include/generated \ 542 -I$(objtree)/include \ !! 393 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 543 $(USERINCLUDE) !! 394 -I$(objtree)/include 544 !! 395 545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE !! 396 LINUXINCLUDE += $(filter-out $(LINUXINCLUDE),$(USERINCLUDE)) 546 << 547 KBUILD_CFLAGS := << 548 KBUILD_CFLAGS += -std=gnu11 << 549 KBUILD_CFLAGS += -fshort-wchar << 550 KBUILD_CFLAGS += -funsigned-char << 551 KBUILD_CFLAGS += -fno-common << 552 KBUILD_CFLAGS += -fno-PIE << 553 KBUILD_CFLAGS += -fno-strict-aliasing << 554 397 555 KBUILD_CPPFLAGS := -D__KERNEL__ 398 KBUILD_CPPFLAGS := -D__KERNEL__ 556 KBUILD_RUSTFLAGS := $(rust_common_flags) \ !! 399 557 -Cpanic=abort -Cembed-bitc !! 400 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 558 -Cforce-unwind-tables=n -C !! 401 -fno-strict-aliasing -fno-common \ 559 -Csymbol-mangling-version= !! 402 -Werror-implicit-function-declaration \ 560 -Crelocation-model=static !! 403 -Wno-format-security \ 561 -Zfunction-sections=n \ !! 404 -std=gnu89 $(call cc-option,-fno-PIE) 562 -Wclippy::float_arithmetic !! 405 563 406 564 KBUILD_AFLAGS_KERNEL := 407 KBUILD_AFLAGS_KERNEL := 565 KBUILD_CFLAGS_KERNEL := 408 KBUILD_CFLAGS_KERNEL := 566 KBUILD_RUSTFLAGS_KERNEL := !! 409 KBUILD_AFLAGS := -D__ASSEMBLY__ $(call cc-option,-fno-PIE) 567 KBUILD_AFLAGS_MODULE := -DMODULE 410 KBUILD_AFLAGS_MODULE := -DMODULE 568 KBUILD_CFLAGS_MODULE := -DMODULE 411 KBUILD_CFLAGS_MODULE := -DMODULE 569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE !! 412 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 << 581 413 582 # Allows the usage of unstable features in sta !! 414 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 583 export RUSTC_BOOTSTRAP := 1 !! 415 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) >> 416 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 584 417 585 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K !! 418 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 586 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q !! 419 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 587 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS !! 420 export CPP AR NM STRIP OBJCOPY OBJDUMP 588 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF !! 421 export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE 589 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ !! 422 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 590 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD !! 423 591 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS !! 424 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 592 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS !! 425 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KCOV CFLAGS_KASAN CFLAGS_UBSAN 593 << 594 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC << 595 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU << 596 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF << 597 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 426 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 598 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 427 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 599 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 428 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL >> 429 export KBUILD_ARFLAGS >> 430 >> 431 # When compiling out-of-tree modules, put MODVERDIR in the module >> 432 # tree rather than in the kernel tree. The kernel tree might >> 433 # even be read-only. >> 434 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 600 435 601 # Files to ignore in find ... statements 436 # Files to ignore in find ... statements 602 437 603 export RCS_FIND_IGNORE := \( -name SCCS -o -na 438 export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 604 -name CVS -o -name . 439 -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 605 -prune -o 440 -prune -o >> 441 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ >> 442 --exclude CVS --exclude .pc --exclude .hg --exclude .git 606 443 607 # ============================================ 444 # =========================================================================== 608 # Rules shared between *config targets and bui 445 # Rules shared between *config targets and build targets 609 446 610 # Basic helpers built in scripts/basic/ !! 447 # Basic helpers built in scripts/ 611 PHONY += scripts_basic 448 PHONY += scripts_basic 612 scripts_basic: 449 scripts_basic: 613 $(Q)$(MAKE) $(build)=scripts/basic 450 $(Q)$(MAKE) $(build)=scripts/basic >> 451 $(Q)rm -f .tmp_quiet_recordmcount >> 452 >> 453 # To avoid any implicit rule to kick in, define an empty command. >> 454 scripts/basic/%: scripts_basic ; 614 455 615 PHONY += outputmakefile 456 PHONY += outputmakefile 616 ifdef building_out_of_srctree << 617 # Before starting out-of-tree build, make sure << 618 # outputmakefile generates a Makefile in the o 457 # outputmakefile generates a Makefile in the output directory, if using a 619 # separate output directory. This allows conve 458 # separate output directory. This allows convenient use of make in the 620 # output directory. 459 # output directory. 621 # At the same time when output Makefile genera << 622 # ignore whole output directory << 623 << 624 quiet_cmd_makefile = GEN Makefile << 625 cmd_makefile = { \ << 626 echo "\# Automatically generated by $( << 627 echo "include $(srctree)/Makefile"; \ << 628 } > Makefile << 629 << 630 outputmakefile: 460 outputmakefile: 631 @if [ -f $(srctree)/.config -o \ !! 461 ifneq ($(KBUILD_SRC),) 632 -d $(srctree)/include/config << 633 -d $(srctree)/arch/$(SRCARCH) << 634 echo >&2 "***"; \ << 635 echo >&2 "*** The source tree << 636 echo >&2 "*** in $(abs_srctree << 637 echo >&2 "***"; \ << 638 false; \ << 639 fi << 640 $(Q)ln -fsn $(srctree) source 462 $(Q)ln -fsn $(srctree) source 641 $(call cmd,makefile) !! 463 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 642 $(Q)test -e .gitignore || \ !! 464 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 643 { echo "# this is build directory, ign << 644 endif 465 endif 645 466 646 # The expansion should be delayed until arch/$ !! 467 # Support for using generic headers in asm-generic 647 # Some architectures define CROSS_COMPILE in a !! 468 PHONY += asm-generic 648 # CC_VERSION_TEXT and RUSTC_VERSION_TEXT are r !! 469 asm-generic: 649 # need export), and from include/config/auto.c !! 470 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 650 # upgrade. !! 471 src=asm obj=arch/$(SRCARCH)/include/generated/asm 651 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC !! 472 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 652 RUSTC_VERSION_TEXT = $(subst $(pound),,$(shell !! 473 src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm >> 474 >> 475 # To make sure we do not include .config for any of the *config targets >> 476 # catch them early, and hand them over to scripts/kconfig/Makefile >> 477 # It is allowed to specify more targets when calling make, including >> 478 # mixing *config targets and build targets. >> 479 # For example 'make oldconfig all'. >> 480 # Detect when mixed targets is specified, and make a second invocation >> 481 # of make so .config is not included in this case either (for *config). >> 482 >> 483 version_h := include/generated/uapi/linux/version.h >> 484 old_version_h := include/linux/version.h >> 485 >> 486 no-dot-config-targets := clean mrproper distclean \ >> 487 cscope gtags TAGS tags help% %docs check% coccicheck \ >> 488 $(version_h) headers_% archheaders archscripts \ >> 489 kernelversion %src-pkg >> 490 >> 491 config-targets := 0 >> 492 mixed-targets := 0 >> 493 dot-config := 1 653 494 654 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), !! 495 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 655 include $(srctree)/scripts/Makefile.clang !! 496 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) >> 497 dot-config := 0 >> 498 endif 656 endif 499 endif 657 500 658 # Include this also for config targets because !! 501 ifeq ($(KBUILD_EXTMOD),) 659 # cc-cross-prefix to determine CROSS_COMPILE. !! 502 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 660 ifdef need-compiler !! 503 config-targets := 1 661 include $(srctree)/scripts/Makefile.compiler !! 504 ifneq ($(words $(MAKECMDGOALS)),1) >> 505 mixed-targets := 1 >> 506 endif >> 507 endif >> 508 endif >> 509 # install and module_install need also be processed one by one >> 510 ifneq ($(filter install,$(MAKECMDGOALS)),) >> 511 ifneq ($(filter modules_install,$(MAKECMDGOALS)),) >> 512 mixed-targets := 1 >> 513 endif 662 endif 514 endif 663 515 664 ifdef config-build !! 516 ifeq ($(mixed-targets),1) >> 517 # =========================================================================== >> 518 # We're called with mixed targets (*config and build targets). >> 519 # Handle them one by one. >> 520 >> 521 PHONY += $(MAKECMDGOALS) __build_one_by_one >> 522 >> 523 $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one >> 524 @: >> 525 >> 526 __build_one_by_one: >> 527 $(Q)set -e; \ >> 528 for i in $(MAKECMDGOALS); do \ >> 529 $(MAKE) -f $(srctree)/Makefile $$i; \ >> 530 done >> 531 >> 532 else >> 533 ifeq ($(config-targets),1) 665 # ============================================ 534 # =========================================================================== 666 # *config targets only - make sure prerequisit 535 # *config targets only - make sure prerequisites are updated, and descend 667 # in scripts/kconfig to make the *config targe 536 # in scripts/kconfig to make the *config target 668 537 669 # Read arch-specific Makefile to set KBUILD_DE !! 538 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 670 # KBUILD_DEFCONFIG may point out an alternativ 539 # KBUILD_DEFCONFIG may point out an alternative default configuration 671 # used for 'make defconfig' 540 # used for 'make defconfig' 672 include $(srctree)/arch/$(SRCARCH)/Makefile !! 541 include arch/$(SRCARCH)/Makefile 673 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS !! 542 export KBUILD_DEFCONFIG KBUILD_KCONFIG 674 543 675 config: outputmakefile scripts_basic FORCE !! 544 config: scripts_basic outputmakefile FORCE 676 $(Q)$(MAKE) $(build)=scripts/kconfig $ 545 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 677 546 678 %config: outputmakefile scripts_basic FORCE !! 547 %config: scripts_basic outputmakefile FORCE 679 $(Q)$(MAKE) $(build)=scripts/kconfig $ 548 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 680 549 681 else #!config-build !! 550 else 682 # ============================================ 551 # =========================================================================== 683 # Build targets only - this includes vmlinux, !! 552 # Build targets only - this includes vmlinux, arch specific targets, clean 684 # targets and others. In general all targets e 553 # targets and others. In general all targets except *config targets. 685 554 686 # If building an external module we do not car << 687 # but instead __all depend on modules << 688 PHONY += all << 689 ifeq ($(KBUILD_EXTMOD),) 555 ifeq ($(KBUILD_EXTMOD),) 690 __all: all !! 556 # Additional helpers built in scripts/ 691 else !! 557 # Carefully list dependencies so we do not try to build scripts twice 692 __all: modules !! 558 # in parallel 693 endif !! 559 PHONY += scripts >> 560 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ >> 561 asm-generic gcc-plugins >> 562 $(Q)$(MAKE) $(build)=$(@) 694 563 695 targets := !! 564 # Objects we will link into vmlinux / subdirs we need to visit >> 565 init-y := init/ >> 566 drivers-y := drivers/ sound/ firmware/ >> 567 net-y := net/ >> 568 libs-y := lib/ >> 569 core-y := usr/ >> 570 virt-y := virt/ >> 571 endif # KBUILD_EXTMOD 696 572 697 # Decide whether to build built-in, modular, o !! 573 ifeq ($(dot-config),1) 698 # Normally, just do built-in. !! 574 # Read in config >> 575 -include include/config/auto.conf 699 576 700 KBUILD_MODULES := !! 577 ifeq ($(KBUILD_EXTMOD),) 701 KBUILD_BUILTIN := 1 !! 578 # Read in dependencies to all Kconfig* files, make sure to run >> 579 # oldconfig if changes are detected. >> 580 -include include/config/auto.conf.cmd >> 581 >> 582 # To avoid any implicit rule to kick in, define an empty command >> 583 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; >> 584 >> 585 # If .config is newer than include/config/auto.conf, someone tinkered >> 586 # with it and forgot to run make oldconfig. >> 587 # if auto.conf.cmd is missing then we are probably in a cleaned tree so >> 588 # we execute the config step to be sure to catch updated Kconfig files >> 589 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd >> 590 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig >> 591 else >> 592 # external modules needs include/generated/autoconf.h and include/config/auto.conf >> 593 # but do not care if they are up-to-date. Use auto.conf to trigger the test >> 594 PHONY += include/config/auto.conf 702 595 703 # If we have only "make modules", don't compil !! 596 include/config/auto.conf: 704 ifeq ($(MAKECMDGOALS),modules) !! 597 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 705 KBUILD_BUILTIN := !! 598 echo >&2; \ 706 endif !! 599 echo >&2 " ERROR: Kernel configuration is invalid."; \ >> 600 echo >&2 " include/generated/autoconf.h or $@ are missing.";\ >> 601 echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ >> 602 echo >&2 ; \ >> 603 /bin/false) 707 604 708 # If we have "make <whatever> modules", compil !! 605 endif # KBUILD_EXTMOD 709 # in addition to whatever we do anyway. << 710 # Just "make" or "make all" shall build module << 711 606 712 ifneq ($(filter all modules nsdeps %compile_co !! 607 else 713 KBUILD_MODULES := 1 !! 608 # Dummy target needed, because used as prerequisite 714 endif !! 609 include/config/auto.conf: ; >> 610 endif # $(dot-config) 715 611 716 ifeq ($(MAKECMDGOALS),) !! 612 # For the kernel to actually contain only the needed exported symbols, >> 613 # we have to build modules as well to determine what those symbols are. >> 614 # (this can be evaluated only once include/config/auto.conf has been included) >> 615 ifdef CONFIG_TRIM_UNUSED_KSYMS 717 KBUILD_MODULES := 1 616 KBUILD_MODULES := 1 718 endif 617 endif 719 618 720 export KBUILD_MODULES KBUILD_BUILTIN << 721 << 722 ifdef need-config << 723 include include/config/auto.conf << 724 endif << 725 << 726 ifeq ($(KBUILD_EXTMOD),) << 727 # Objects we will link into vmlinux / subdirs << 728 core-y := << 729 drivers-y := << 730 libs-y := lib/ << 731 endif # KBUILD_EXTMOD << 732 << 733 # The all: target is the default when no targe 619 # The all: target is the default when no target is given on the 734 # command line. 620 # command line. 735 # This allow a user to issue only 'make' to bu 621 # This allow a user to issue only 'make' to build a kernel including modules 736 # Defaults to vmlinux, but the arch makefile u 622 # Defaults to vmlinux, but the arch makefile usually adds further targets 737 all: vmlinux 623 all: vmlinux 738 624 739 CFLAGS_GCOV := -fprofile-arcs -ftest-cover !! 625 # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default 740 ifdef CONFIG_CC_IS_GCC !! 626 # values of the respective KBUILD_* variables 741 CFLAGS_GCOV += -fno-tree-loop-im !! 627 ARCH_CPPFLAGS := 742 endif !! 628 ARCH_AFLAGS := 743 export CFLAGS_GCOV !! 629 ARCH_CFLAGS := 744 !! 630 include arch/$(SRCARCH)/Makefile 745 # The arch Makefiles can override CC_FLAGS_FTR << 746 ifdef CONFIG_FUNCTION_TRACER << 747 CC_FLAGS_FTRACE := -pg << 748 endif << 749 << 750 include $(srctree)/arch/$(SRCARCH)/Makefile << 751 << 752 ifdef need-config << 753 ifdef may-sync-config << 754 # Read in dependencies to all Kconfig* files, << 755 # changes are detected. This should be include << 756 # because some architectures define CROSS_COMP << 757 include include/config/auto.conf.cmd << 758 << 759 $(KCONFIG_CONFIG): << 760 @echo >&2 '***' << 761 @echo >&2 '*** Configuration file "$@" << 762 @echo >&2 '***' << 763 @echo >&2 '*** Please run some configu << 764 @echo >&2 '*** "make menuconfig" or "m << 765 @echo >&2 '***' << 766 @/bin/false << 767 << 768 # The actual configuration files used during t << 769 # include/generated/ and include/config/. Upda << 770 # include/config/auto.conf (which mirrors .con << 771 # << 772 # This exploits the 'multi-target pattern rule << 773 # The syncconfig should be executed only once << 774 # (Note: use the grouped target '&:' when we b << 775 # << 776 # Do not use $(call cmd,...) here. That would << 777 # so you cannot notice that Kconfig is waiting << 778 %/config/auto.conf %/config/auto.conf.cmd %/ge << 779 $(Q)$(kecho) " SYNC $@" << 780 $(Q)$(MAKE) -f $(srctree)/Makefile syn << 781 else # !may-sync-config << 782 # External modules and some install targets ne << 783 # and include/config/auto.conf but do not care << 784 # Use auto.conf to trigger the test << 785 PHONY += include/config/auto.conf << 786 631 787 include/config/auto.conf: !! 632 KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) 788 @test -e include/generated/autoconf.h !! 633 KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) 789 echo >&2; << 790 echo >&2 " ERROR: Kernel configuratio << 791 echo >&2 " include/generated/a << 792 echo >&2 " Run 'make oldconfig << 793 echo >&2 ; << 794 /bin/false) << 795 634 796 endif # may-sync-config !! 635 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 797 endif # need-config !! 636 KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,) >> 637 KBUILD_CFLAGS += $(call cc-option,-fdata-sections,) >> 638 endif 798 639 799 KBUILD_CFLAGS += -fno-delete-null-pointer-ch !! 640 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE >> 641 KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) >> 642 else >> 643 ifdef CONFIG_PROFILE_ALL_BRANCHES >> 644 KBUILD_CFLAGS += -O2 $(call cc-disable-warning,maybe-uninitialized,) >> 645 else >> 646 KBUILD_CFLAGS += -O2 >> 647 endif >> 648 endif 800 649 801 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE !! 650 KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, \ 802 KBUILD_CFLAGS += -O2 !! 651 $(call cc-disable-warning,maybe-uninitialized,)) 803 KBUILD_RUSTFLAGS += -Copt-level=2 << 804 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE << 805 KBUILD_CFLAGS += -Os << 806 KBUILD_RUSTFLAGS += -Copt-level=s << 807 endif << 808 << 809 # Always set `debug-assertions` and `overflow- << 810 # depends on `opt-level` and `debug-assertions << 811 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( << 812 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C << 813 652 814 # Tell gcc to never replace conditional load w 653 # Tell gcc to never replace conditional load with a non-conditional one 815 ifdef CONFIG_CC_IS_GCC << 816 # gcc-10 renamed --param=allow-store-data-race << 817 # -fno-allow-store-data-races. << 818 KBUILD_CFLAGS += $(call cc-option,--param=al 654 KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 819 KBUILD_CFLAGS += $(call cc-option,-fno-allow !! 655 >> 656 # check for 'asm goto' >> 657 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y) >> 658 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO >> 659 KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO 820 endif 660 endif 821 661 >> 662 include scripts/Makefile.gcc-plugins >> 663 822 ifdef CONFIG_READABLE_ASM 664 ifdef CONFIG_READABLE_ASM 823 # Disable optimizations that make assembler li 665 # Disable optimizations that make assembler listings hard to read. 824 # reorder blocks reorders the control in the f 666 # reorder blocks reorders the control in the function 825 # ipa clone creates specialized cloned functio 667 # ipa clone creates specialized cloned functions 826 # partial inlining inlines only parts of funct 668 # partial inlining inlines only parts of functions 827 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- !! 669 KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ >> 670 $(call cc-option,-fno-ipa-cp-clone,) \ >> 671 $(call cc-option,-fno-partial-inlining) 828 endif 672 endif 829 673 830 stackp-flags-y !! 674 ifneq ($(CONFIG_FRAME_WARN),0) 831 stackp-flags-$(CONFIG_STACKPROTECTOR) !! 675 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 832 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) !! 676 endif 833 677 834 KBUILD_CFLAGS += $(stackp-flags-y) !! 678 # This selects the stack protector compiler flag. Testing it is delayed >> 679 # until after .config has been reprocessed, in the prepare-compiler-check >> 680 # target. >> 681 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR >> 682 stackp-flag := -fstack-protector >> 683 stackp-name := REGULAR >> 684 else >> 685 ifdef CONFIG_CC_STACKPROTECTOR_STRONG >> 686 stackp-flag := -fstack-protector-strong >> 687 stackp-name := STRONG >> 688 else >> 689 # Force off for distro compilers that enable stack protector by default. >> 690 stackp-flag := $(call cc-option, -fno-stack-protector) >> 691 endif >> 692 endif >> 693 # Find arch-specific stack protector compiler sanity-checking script. >> 694 ifdef CONFIG_CC_STACKPROTECTOR >> 695 stackp-path := $(srctree)/scripts/gcc-$(SRCARCH)_$(BITS)-has-stack-protector.sh >> 696 stackp-check := $(wildcard $(stackp-path)) >> 697 endif >> 698 KBUILD_CFLAGS += $(stackp-flag) >> 699 >> 700 ifeq ($(cc-name),clang) >> 701 KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) >> 702 KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,) >> 703 KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) >> 704 KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) >> 705 KBUILD_CFLAGS += $(call cc-disable-warning, gnu) >> 706 # Quiet clang warning: comparison of unsigned expression < 0 is always false >> 707 KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) >> 708 # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the >> 709 # source of a reference will be _MergedGlobals and not on of the whitelisted names. >> 710 # See modpost pattern 2 >> 711 KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) >> 712 KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) >> 713 else 835 714 836 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning !! 715 # These warnings generated too much noise in a regular build. 837 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) !! 716 # Use make W=1 to enable them (see scripts/Makefile.build) >> 717 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) >> 718 KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) >> 719 endif 838 720 839 ifdef CONFIG_FRAME_POINTER 721 ifdef CONFIG_FRAME_POINTER 840 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 722 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 841 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y << 842 else 723 else 843 # Some targets (ARM with Thumb2, for example), 724 # Some targets (ARM with Thumb2, for example), can't be built with frame 844 # pointers. For those, we don't have FUNCTION 725 # pointers. For those, we don't have FUNCTION_TRACER automatically 845 # select FRAME_POINTER. However, FUNCTION_TRA 726 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 846 # incompatible with -fomit-frame-pointer with 727 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 847 # -fomit-frame-pointer with FUNCTION_TRACER. 728 # -fomit-frame-pointer with FUNCTION_TRACER. 848 # In the Rust target specification, "frame-poi << 849 # to "may-omit". << 850 ifndef CONFIG_FUNCTION_TRACER 729 ifndef CONFIG_FUNCTION_TRACER 851 KBUILD_CFLAGS += -fomit-frame-pointer 730 KBUILD_CFLAGS += -fomit-frame-pointer 852 endif 731 endif 853 endif 732 endif 854 733 855 # Initialize all stack variables with a 0xAA p !! 734 KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) 856 ifdef CONFIG_INIT_STACK_ALL_PATTERN << 857 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat << 858 endif << 859 735 860 # Initialize all stack variables with a zero v !! 736 ifdef CONFIG_DEBUG_INFO 861 ifdef CONFIG_INIT_STACK_ALL_ZERO !! 737 ifdef CONFIG_DEBUG_INFO_SPLIT 862 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer !! 738 KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) 863 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER !! 739 else 864 # https://github.com/llvm/llvm-project/issues/ !! 740 KBUILD_CFLAGS += -g 865 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi << 866 export CC_AUTO_VAR_INIT_ZERO_ENABLER << 867 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA << 868 endif 741 endif >> 742 KBUILD_AFLAGS += -Wa,-gdwarf-2 >> 743 endif >> 744 ifdef CONFIG_DEBUG_INFO_DWARF4 >> 745 KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) 869 endif 746 endif 870 747 871 # While VLAs have been removed, GCC produces u !! 748 ifdef CONFIG_DEBUG_INFO_REDUCED 872 # for the randomize_kstack_offset feature. Dis !! 749 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 873 KBUILD_CFLAGS += $(call cc-option, -fno-stac !! 750 $(call cc-option,-fno-var-tracking) 874 << 875 # Clear used registers at func exit (to reduce << 876 ifdef CONFIG_ZERO_CALL_USED_REGS << 877 KBUILD_CFLAGS += -fzero-call-used-regs=used- << 878 endif 751 endif 879 752 880 ifdef CONFIG_FUNCTION_TRACER 753 ifdef CONFIG_FUNCTION_TRACER 881 ifdef CONFIG_FTRACE_MCOUNT_USE_CC !! 754 ifndef CC_FLAGS_FTRACE 882 CC_FLAGS_FTRACE += -mrecord-mcount !! 755 CC_FLAGS_FTRACE := -pg 883 ifdef CONFIG_HAVE_NOP_MCOUNT << 884 ifeq ($(call cc-option-yn, -mnop-mcount),y << 885 CC_FLAGS_FTRACE += -mnop-mcount << 886 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 887 endif << 888 endif << 889 endif << 890 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL << 891 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT << 892 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 893 endif << 894 endif << 895 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT << 896 ifdef CONFIG_HAVE_C_RECORDMCOUNT << 897 BUILD_C_RECORDMCOUNT := y << 898 export BUILD_C_RECORDMCOUNT << 899 endif << 900 endif 756 endif >> 757 export CC_FLAGS_FTRACE 901 ifdef CONFIG_HAVE_FENTRY 758 ifdef CONFIG_HAVE_FENTRY 902 # s390-linux-gnu-gcc did not support -mfentr !! 759 CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) 903 ifeq ($(call cc-option-yn, -mfentry),y) !! 760 endif 904 CC_FLAGS_FTRACE += -mfentry !! 761 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY) 905 CC_FLAGS_USING += -DCC_USING_FENTRY !! 762 KBUILD_AFLAGS += $(CC_USING_FENTRY) 906 endif !! 763 ifdef CONFIG_DYNAMIC_FTRACE >> 764 ifdef CONFIG_HAVE_C_RECORDMCOUNT >> 765 BUILD_C_RECORDMCOUNT := y >> 766 export BUILD_C_RECORDMCOUNT >> 767 endif 907 endif 768 endif 908 export CC_FLAGS_FTRACE << 909 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA << 910 KBUILD_AFLAGS += $(CC_FLAGS_USING) << 911 endif 769 endif 912 770 913 # We trigger additional mismatches with less i 771 # We trigger additional mismatches with less inlining 914 ifdef CONFIG_DEBUG_SECTION_MISMATCH 772 ifdef CONFIG_DEBUG_SECTION_MISMATCH 915 KBUILD_CFLAGS += -fno-inline-functions-called- !! 773 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 916 endif << 917 << 918 # `rustc`'s `-Zfunction-sections` applies to d << 919 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION << 920 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f << 921 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections << 922 LDFLAGS_vmlinux += --gc-sections << 923 endif << 924 << 925 ifdef CONFIG_SHADOW_CALL_STACK << 926 ifndef CONFIG_DYNAMIC_SCS << 927 CC_FLAGS_SCS := -fsanitize=shadow-call-stac << 928 KBUILD_CFLAGS += $(CC_FLAGS_SCS) << 929 KBUILD_RUSTFLAGS += -Zsanitizer=shadow-call-st << 930 endif << 931 export CC_FLAGS_SCS << 932 endif << 933 << 934 ifdef CONFIG_LTO_CLANG << 935 ifdef CONFIG_LTO_CLANG_THIN << 936 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit << 937 else << 938 CC_FLAGS_LTO := -flto << 939 endif << 940 CC_FLAGS_LTO += -fvisibility=hidden << 941 << 942 # Limit inlining across translation units to r << 943 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 << 944 endif << 945 << 946 ifdef CONFIG_LTO << 947 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) << 948 KBUILD_AFLAGS += -fno-lto << 949 export CC_FLAGS_LTO << 950 endif << 951 << 952 ifdef CONFIG_CFI_CLANG << 953 CC_FLAGS_CFI := -fsanitize=kcfi << 954 ifdef CONFIG_CFI_ICALL_NORMALIZE_INTEGERS << 955 CC_FLAGS_CFI += -fsanitize-cfi-ical << 956 endif << 957 ifdef CONFIG_RUST << 958 # Always pass -Zsanitizer-cfi-normaliz << 959 # CONFIG_CFI_ICALL_NORMALIZE_INTEGERS. << 960 RUSTC_FLAGS_CFI := -Zsanitizer=kcfi << 961 KBUILD_RUSTFLAGS += $(RUSTC_FLAGS_CFI) << 962 export RUSTC_FLAGS_CFI << 963 endif << 964 KBUILD_CFLAGS += $(CC_FLAGS_CFI) << 965 export CC_FLAGS_CFI << 966 endif << 967 << 968 # Architectures can define flags to add/remove << 969 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN << 970 export CC_FLAGS_FPU << 971 export CC_FLAGS_NO_FPU << 972 << 973 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) << 974 # Set the minimal function alignment. Use the << 975 # -fmin-function-alignment if it is available, << 976 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME << 977 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT << 978 KBUILD_CFLAGS += -fmin-function-alignment=$(CO << 979 else << 980 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU << 981 endif << 982 endif 774 endif 983 775 984 # arch Makefile may override CC so keep this a 776 # arch Makefile may override CC so keep this after arch Makefile is included 985 NOSTDINC_FLAGS += -nostdinc !! 777 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) >> 778 CHECKFLAGS += $(NOSTDINC_FLAGS) 986 779 987 # To gain proper coverage for CONFIG_UBSAN_BOU !! 780 # warn about C99 declaration after statement 988 # the kernel uses only C99 flexible arrays for !! 781 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 989 # arrays. Enforce this for everything that may << 990 # perform bounds checking. << 991 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl << 992 << 993 #Currently, disable -Wstringop-overflow for GC << 994 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW << 995 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + << 996 782 997 # disable invalid "can't wrap" optimizations f !! 783 # disable pointer signed / unsigned warnings in gcc 4.0 998 KBUILD_CFLAGS += -fno-strict-overflow !! 784 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 999 785 1000 # Make sure -fstack-check isn't enabled (like !! 786 # disable invalid "can't wrap" optimizations for signed / pointers 1001 KBUILD_CFLAGS += -fno-stack-check !! 787 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 1002 788 1003 # conserve stack if available 789 # conserve stack if available 1004 ifdef CONFIG_CC_IS_GCC !! 790 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 1005 KBUILD_CFLAGS += -fconserve-stack << 1006 endif << 1007 791 1008 # change __FILE__ to the relative path from t !! 792 # disallow errors like 'EXPORT_GPL(foo);' with missing header 1009 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p !! 793 KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) 1010 794 1011 # include additional Makefiles when needed !! 795 # require functions to have arguments in prototypes, not empty 'int foo()' 1012 include-y := scripts/Ma !! 796 KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) 1013 include-$(CONFIG_DEBUG_INFO) += scripts/Ma << 1014 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma << 1015 include-$(CONFIG_KASAN) += scripts/Ma << 1016 include-$(CONFIG_KCSAN) += scripts/Ma << 1017 include-$(CONFIG_KMSAN) += scripts/Ma << 1018 include-$(CONFIG_UBSAN) += scripts/Ma << 1019 include-$(CONFIG_KCOV) += scripts/Ma << 1020 include-$(CONFIG_RANDSTRUCT) += scripts/Ma << 1021 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma << 1022 << 1023 include $(addprefix $(srctree)/, $(include-y) << 1024 << 1025 # scripts/Makefile.gcc-plugins is intentional << 1026 # Do not add $(call cc-option,...) below this << 1027 # from the clean source tree, the GCC plugins << 1028 << 1029 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS << 1030 KBUILD_CPPFLAGS += $(KCPPFLAGS) << 1031 KBUILD_AFLAGS += $(KAFLAGS) << 1032 KBUILD_CFLAGS += $(KCFLAGS) << 1033 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) << 1034 << 1035 KBUILD_LDFLAGS_MODULE += --build-id=sha1 << 1036 LDFLAGS_vmlinux += --build-id=sha1 << 1037 << 1038 KBUILD_LDFLAGS += -z noexecstack << 1039 ifeq ($(CONFIG_LD_IS_BFD),y) << 1040 KBUILD_LDFLAGS += $(call ld-option,--no-warn << 1041 endif << 1042 797 1043 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) !! 798 # Prohibit date/time macros, which would make the build non-deterministic 1044 LDFLAGS_vmlinux += -X !! 799 KBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 1045 endif !! 800 >> 801 # enforce correct pointer usage >> 802 KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) >> 803 >> 804 # use the deterministic mode of AR if available >> 805 KBUILD_ARFLAGS := $(call ar-option,D) >> 806 >> 807 include scripts/Makefile.kasan >> 808 include scripts/Makefile.extrawarn >> 809 include scripts/Makefile.ubsan >> 810 >> 811 # Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the >> 812 # last assignments >> 813 KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) >> 814 KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) >> 815 KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) >> 816 >> 817 # Use --build-id when available. >> 818 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ >> 819 $(call cc-ldoption, -Wl$(comma)--build-id,)) >> 820 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) >> 821 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 1046 822 1047 ifeq ($(CONFIG_RELR),y) !! 823 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 1048 # ld.lld before 15 did not support -z pack-re !! 824 LDFLAGS_vmlinux += $(call ld-option, --gc-sections,) 1049 LDFLAGS_vmlinux += $(call ld-option,--pack-dy << 1050 endif 825 endif 1051 826 1052 # We never want expected sections to be place !! 827 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1053 # linker. All sections should be explicitly n !! 828 LDFLAGS_vmlinux += $(call ld-option, -X,) 1054 ifdef CONFIG_LD_ORPHAN_WARN << 1055 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG << 1056 endif 829 endif 1057 830 1058 # Align the bit size of userspace programs wi << 1059 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta << 1060 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta << 1061 << 1062 # make the checker run with the right archite << 1063 CHECKFLAGS += --arch=$(ARCH) << 1064 << 1065 # insure the checker run with the right endia << 1066 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- << 1067 << 1068 # the checker needs the correct machine size << 1069 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) << 1070 << 1071 # Default kernel image to build when no speci 831 # Default kernel image to build when no specific target is given. 1072 # KBUILD_IMAGE may be overruled on the comman 832 # KBUILD_IMAGE may be overruled on the command line or 1073 # set in the environment 833 # set in the environment 1074 # Also any assignments in arch/$(ARCH)/Makefi 834 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 1075 # this default value 835 # this default value 1076 export KBUILD_IMAGE ?= vmlinux 836 export KBUILD_IMAGE ?= vmlinux 1077 837 1078 # 838 # 1079 # INSTALL_PATH specifies where to place the u 839 # INSTALL_PATH specifies where to place the updated kernel and system map 1080 # images. Default is /boot, but you can set i 840 # images. Default is /boot, but you can set it to other values 1081 export INSTALL_PATH ?= /boot 841 export INSTALL_PATH ?= /boot 1082 842 1083 # 843 # 1084 # INSTALL_DTBS_PATH specifies a prefix for re 844 # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1085 # Like INSTALL_MOD_PATH, it isn't defined in 845 # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1086 # an argument if needed. Otherwise it default 846 # an argument if needed. Otherwise it defaults to the kernel install path 1087 # 847 # 1088 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d 848 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1089 849 1090 # 850 # 1091 # INSTALL_MOD_PATH specifies a prefix to MODL 851 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1092 # relocations required by build roots. This 852 # relocations required by build roots. This is not defined in the 1093 # makefile but the argument can be passed to 853 # makefile but the argument can be passed to make if needed. 1094 # 854 # 1095 855 1096 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 856 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1097 export MODLIB 857 export MODLIB 1098 858 1099 PHONY += prepare0 !! 859 # 1100 !! 860 # INSTALL_MOD_STRIP, if defined, will cause modules to be 1101 export extmod_prefix = $(if $(KBUILD_EXTMOD), !! 861 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 1102 export MODORDER := $(extmod_prefix)modules.or !! 862 # the default option --strip-debug will be used. Otherwise, 1103 export MODULES_NSDEPS := $(extmod_prefix)modu !! 863 # INSTALL_MOD_STRIP value will be used as the options to the strip command. 1104 !! 864 1105 ifeq ($(KBUILD_EXTMOD),) !! 865 ifdef INSTALL_MOD_STRIP >> 866 ifeq ($(INSTALL_MOD_STRIP),1) >> 867 mod_strip_cmd = $(STRIP) --strip-debug >> 868 else >> 869 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) >> 870 endif # INSTALL_MOD_STRIP=1 >> 871 else >> 872 mod_strip_cmd = true >> 873 endif # INSTALL_MOD_STRIP >> 874 export mod_strip_cmd >> 875 >> 876 # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed >> 877 # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP >> 878 # or CONFIG_MODULE_COMPRESS_XZ. >> 879 >> 880 mod_compress_cmd = true >> 881 ifdef CONFIG_MODULE_COMPRESS >> 882 ifdef CONFIG_MODULE_COMPRESS_GZIP >> 883 mod_compress_cmd = gzip -n -f >> 884 endif # CONFIG_MODULE_COMPRESS_GZIP >> 885 ifdef CONFIG_MODULE_COMPRESS_XZ >> 886 mod_compress_cmd = xz -f >> 887 endif # CONFIG_MODULE_COMPRESS_XZ >> 888 endif # CONFIG_MODULE_COMPRESS >> 889 export mod_compress_cmd >> 890 >> 891 # Select initial ramdisk compression format, default is gzip(1). >> 892 # This shall be used by the dracut(8) tool while creating an initramfs image. >> 893 # >> 894 INITRD_COMPRESS-y := gzip >> 895 INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 >> 896 INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma >> 897 INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz >> 898 INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo >> 899 INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 >> 900 # do not export INITRD_COMPRESS, since we didn't actually >> 901 # choose a sane default compression above. >> 902 # export INITRD_COMPRESS := $(INITRD_COMPRESS-y) 1106 903 1107 build-dir := . !! 904 ifdef CONFIG_MODULE_SIG_ALL 1108 clean-dirs := $(sort . Documentation \ !! 905 $(eval $(call config_filename,MODULE_SIG_KEY)) 1109 $(patsubst %/,%,$(filter << 1110 $(drivers-) $(libs-)) << 1111 << 1112 export ARCH_CORE := $(core-y) << 1113 export ARCH_LIB := $(filter %/, $(lib << 1114 export ARCH_DRIVERS := $(drivers-y) $(dri << 1115 # Externally visible symbols (used by link-vm << 1116 906 1117 KBUILD_VMLINUX_OBJS := ./built-in.a !! 907 mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 1118 ifdef CONFIG_MODULES << 1119 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a << 1120 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib << 1121 else 908 else 1122 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, !! 909 mod_sign_cmd = true >> 910 endif >> 911 export mod_sign_cmd >> 912 >> 913 ifdef CONFIG_STACK_VALIDATION >> 914 has_libelf := $(call try-run,\ >> 915 echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf -,1,0) >> 916 ifeq ($(has_libelf),1) >> 917 objtool_target := tools/objtool FORCE >> 918 else >> 919 $(warning "Cannot use CONFIG_STACK_VALIDATION, please install libelf-dev, libelf-devel or elfutils-libelf-devel") >> 920 SKIP_STACK_VALIDATION := 1 >> 921 export SKIP_STACK_VALIDATION >> 922 endif 1123 endif 923 endif 1124 924 1125 export KBUILD_VMLINUX_LIBS << 1126 export KBUILD_LDS := arch/$(SRCARCH) << 1127 925 >> 926 ifeq ($(KBUILD_EXTMOD),) >> 927 core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ >> 928 >> 929 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ >> 930 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ >> 931 $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) >> 932 >> 933 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ >> 934 $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-)))) >> 935 >> 936 init-y := $(patsubst %/, %/built-in.o, $(init-y)) >> 937 core-y := $(patsubst %/, %/built-in.o, $(core-y)) >> 938 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) >> 939 net-y := $(patsubst %/, %/built-in.o, $(net-y)) >> 940 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) >> 941 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) >> 942 libs-y := $(libs-y1) $(libs-y2) >> 943 virt-y := $(patsubst %/, %/built-in.o, $(virt-y)) >> 944 >> 945 # Externally visible symbols (used by link-vmlinux.sh) >> 946 export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) >> 947 export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) $(virt-y) >> 948 export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds >> 949 export LDFLAGS_vmlinux >> 950 # used by scripts/pacmage/Makefile >> 951 export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools) >> 952 >> 953 vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) >> 954 >> 955 # Include targets which we want to execute sequentially if the rest of the >> 956 # kernel build went well. If CONFIG_TRIM_UNUSED_KSYMS is set, this might be >> 957 # evaluated more than once. >> 958 PHONY += vmlinux_prereq >> 959 vmlinux_prereq: $(vmlinux-deps) FORCE >> 960 ifdef CONFIG_HEADERS_CHECK >> 961 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check >> 962 endif >> 963 ifdef CONFIG_GDB_SCRIPTS >> 964 $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py >> 965 endif 1128 ifdef CONFIG_TRIM_UNUSED_KSYMS 966 ifdef CONFIG_TRIM_UNUSED_KSYMS 1129 # For the kernel to actually contain only the !! 967 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ 1130 # we have to build modules as well to determi !! 968 "$(MAKE) -f $(srctree)/Makefile vmlinux" 1131 KBUILD_MODULES := 1 << 1132 endif 969 endif 1133 970 1134 # '$(AR) mPi' needs 'T' to workaround the bug !! 971 # standalone target for easier testing 1135 quiet_cmd_ar_vmlinux.a = AR $@ !! 972 include/generated/autoksyms.h: FORCE 1136 cmd_ar_vmlinux.a = \ !! 973 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh true 1137 rm -f $@; \ << 1138 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS << 1139 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) << 1140 << 1141 targets += vmlinux.a << 1142 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea << 1143 $(call if_changed,ar_vmlinux.a) << 1144 << 1145 PHONY += vmlinux_o << 1146 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) << 1147 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1148 974 1149 vmlinux.o modules.builtin.modinfo modules.bui !! 975 ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) 1150 @: !! 976 >> 977 # Final link of vmlinux with optional arch pass after final link >> 978 cmd_link-vmlinux = \ >> 979 $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) ; \ >> 980 $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) >> 981 >> 982 vmlinux: scripts/link-vmlinux.sh vmlinux_prereq $(vmlinux-deps) FORCE >> 983 +$(call if_changed,link-vmlinux) 1151 984 1152 PHONY += vmlinux !! 985 # Build samples along the rest of the kernel 1153 # LDFLAGS_vmlinux in the top Makefile defines !! 986 ifdef CONFIG_SAMPLES 1154 # not for decompressors. LDFLAGS_vmlinux in a !! 987 vmlinux-dirs += samples 1155 # unrelated; the decompressors just happen to !! 988 endif 1156 # arch/*/boot/compressed/vmlinux. << 1157 # Export LDFLAGS_vmlinux only to scripts/Make << 1158 # << 1159 # _LDFLAGS_vmlinux is a workaround for the 'p << 1160 # https://savannah.gnu.org/bugs/?61463 << 1161 # For Make > 4.4, the following simple code w << 1162 # vmlinux: private export LDFLAGS_vmlinux := << 1163 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG << 1164 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ << 1165 vmlinux: vmlinux.o $(KBUILD_LDS) modpost << 1166 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1167 989 1168 # The actual objects are generated when desce 990 # The actual objects are generated when descending, 1169 # make sure no implicit rule kicks in 991 # make sure no implicit rule kicks in 1170 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 992 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 1171 993 1172 ifeq ($(origin KERNELRELEASE),file) !! 994 # Handle descending into subdirectories listed in $(vmlinux-dirs) 1173 filechk_kernel.release = $(srctree)/scripts/s !! 995 # Preset locale variables to speed up the build process. Limit locale 1174 else !! 996 # tweaks to this spot to avoid wrong language settings when running 1175 filechk_kernel.release = echo $(KERNELRELEASE !! 997 # make menuconfig etc. 1176 endif !! 998 # Error messages still appears in the original language >> 999 >> 1000 PHONY += $(vmlinux-dirs) >> 1001 $(vmlinux-dirs): prepare scripts >> 1002 $(Q)$(MAKE) $(build)=$@ >> 1003 >> 1004 define filechk_kernel.release >> 1005 echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" >> 1006 endef 1177 1007 1178 # Store (new) KERNELRELEASE string in include 1008 # Store (new) KERNELRELEASE string in include/config/kernel.release 1179 include/config/kernel.release: FORCE !! 1009 include/config/kernel.release: include/config/auto.conf FORCE 1180 $(call filechk,kernel.release) 1010 $(call filechk,kernel.release) 1181 1011 1182 # Additional helpers built in scripts/ << 1183 # Carefully list dependencies so we do not tr << 1184 # in parallel << 1185 PHONY += scripts << 1186 scripts: scripts_basic scripts_dtc << 1187 $(Q)$(MAKE) $(build)=$(@) << 1188 1012 1189 # Things we need to do before we recursively 1013 # Things we need to do before we recursively start building the kernel 1190 # or the modules are listed in "prepare". 1014 # or the modules are listed in "prepare". 1191 # A multi level approach is used. prepareN is 1015 # A multi level approach is used. prepareN is processed before prepareN-1. 1192 # archprepare is used in arch Makefiles and w 1016 # archprepare is used in arch Makefiles and when processed asm symlink, 1193 # version.h and scripts_basic is processed / 1017 # version.h and scripts_basic is processed / created. 1194 1018 1195 PHONY += prepare archprepare !! 1019 # Listed in dependency order >> 1020 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 1196 1021 1197 archprepare: outputmakefile archheaders archs !! 1022 # prepare3 is used to check if we are building in a separate output directory, 1198 asm-generic $(version_h) include/gene !! 1023 # and if so do: 1199 include/generated/compile.h include/g !! 1024 # 1) Check that make has not been executed in the kernel src $(srctree) 1200 !! 1025 prepare3: include/config/kernel.release 1201 prepare0: archprepare !! 1026 ifneq ($(KBUILD_SRC),) 1202 $(Q)$(MAKE) $(build)=scripts/mod !! 1027 @$(kecho) ' Using $(srctree) as source for kernel' 1203 $(Q)$(MAKE) $(build)=. prepare !! 1028 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ >> 1029 echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ >> 1030 echo >&2 " in the '$(srctree)' directory.";\ >> 1031 /bin/false; \ >> 1032 fi; >> 1033 endif >> 1034 >> 1035 # prepare2 creates a makefile if using a separate output directory. >> 1036 # From this point forward, .config has been reprocessed, so any rules >> 1037 # that need to depend on updated CONFIG_* values can be checked here. >> 1038 prepare2: prepare3 prepare-compiler-check outputmakefile asm-generic >> 1039 >> 1040 prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ >> 1041 include/config/auto.conf >> 1042 $(cmd_crmodverdir) 1204 1043 1205 # All the preparing.. !! 1044 archprepare: archheaders archscripts prepare1 scripts_basic 1206 prepare: prepare0 << 1207 ifdef CONFIG_RUST << 1208 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1209 $(Q)$(MAKE) $(build)=rust << 1210 endif << 1211 1045 1212 PHONY += remove-stale-files !! 1046 prepare0: archprepare gcc-plugins 1213 remove-stale-files: !! 1047 $(Q)$(MAKE) $(build)=. 1214 $(Q)$(srctree)/scripts/remove-stale-f << 1215 1048 1216 # Support for using generic headers in asm-ge !! 1049 # All the preparing.. 1217 asm-generic := -f $(srctree)/scripts/Makefile !! 1050 prepare: prepare0 prepare-objtool 1218 1051 1219 PHONY += asm-generic uapi-asm-generic !! 1052 PHONY += prepare-objtool 1220 asm-generic: uapi-asm-generic !! 1053 prepare-objtool: $(objtool_target) 1221 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC !! 1054 1222 generic=include/asm-generic !! 1055 # Check for CONFIG flags that require compiler support. Abort the build 1223 uapi-asm-generic: !! 1056 # after .config has been processed, but before the kernel build starts. 1224 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC !! 1057 # 1225 generic=include/uapi/asm-generic !! 1058 # For security-sensitive CONFIG options, we don't want to fallback and/or >> 1059 # silently change which compiler flags will be used, since that leads to >> 1060 # producing kernels with different security feature characteristics >> 1061 # depending on the compiler used. (For example, "But I selected >> 1062 # CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") >> 1063 PHONY += prepare-compiler-check >> 1064 prepare-compiler-check: FORCE >> 1065 # Make sure compiler supports requested stack protector flag. >> 1066 ifdef stackp-name >> 1067 ifeq ($(call cc-option, $(stackp-flag)),) >> 1068 @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ >> 1069 $(stackp-flag) not supported by compiler >&2 && exit 1 >> 1070 endif >> 1071 endif >> 1072 # Make sure compiler does not have buggy stack-protector support. >> 1073 ifdef stackp-check >> 1074 ifneq ($(shell $(CONFIG_SHELL) $(stackp-check) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y) >> 1075 @echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \ >> 1076 $(stackp-flag) available but compiler is broken >&2 && exit 1 >> 1077 endif >> 1078 endif >> 1079 @: 1226 1080 1227 # Generate some files 1081 # Generate some files 1228 # ------------------------------------------- 1082 # --------------------------------------------------------------------------- 1229 1083 1230 # KERNELRELEASE can change from a few differe 1084 # KERNELRELEASE can change from a few different places, meaning version.h 1231 # needs to be updated, so this check is force 1085 # needs to be updated, so this check is forced on all builds 1232 1086 1233 uts_len := 64 1087 uts_len := 64 1234 define filechk_utsrelease.h 1088 define filechk_utsrelease.h 1235 if [ `echo -n "$(KERNELRELEASE)" | wc 1089 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1236 echo '"$(KERNELRELEASE)" exceeds $( 1090 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1237 exit 1; 1091 exit 1; \ 1238 fi; 1092 fi; \ 1239 echo \#define UTS_RELEASE \"$(KERNELR !! 1093 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1240 endef 1094 endef 1241 1095 1242 define filechk_version.h 1096 define filechk_version.h 1243 if [ $(SUBLEVEL) -gt 255 ]; then !! 1097 (echo \#define LINUX_VERSION_CODE $(shell \ 1244 echo \#define LINUX_VERSION_C !! 1098 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1245 expr $(VERSION) \* 65536 + $( !! 1099 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1246 else << 1247 echo \#define LINUX_VERSION_C << 1248 expr $(VERSION) \* 65536 + $( << 1249 fi; << 1250 echo '#define KERNEL_VERSION(a,b,c) ( << 1251 ((c) > 255 ? 255 : (c)))'; << 1252 echo \#define LINUX_VERSION_MAJOR $(V << 1253 echo \#define LINUX_VERSION_PATCHLEVE << 1254 echo \#define LINUX_VERSION_SUBLEVEL << 1255 endef 1100 endef 1256 1101 1257 $(version_h): private PATCHLEVEL := $(or $(PA !! 1102 $(version_h): $(srctree)/Makefile FORCE 1258 $(version_h): private SUBLEVEL := $(or $(SUBL << 1259 $(version_h): FORCE << 1260 $(call filechk,version.h) 1103 $(call filechk,version.h) >> 1104 $(Q)rm -f $(old_version_h) 1261 1105 1262 include/generated/utsrelease.h: include/confi 1106 include/generated/utsrelease.h: include/config/kernel.release FORCE 1263 $(call filechk,utsrelease.h) 1107 $(call filechk,utsrelease.h) 1264 1108 1265 filechk_compile.h = $(srctree)/scripts/mkcomp << 1266 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION << 1267 << 1268 include/generated/compile.h: FORCE << 1269 $(call filechk,compile.h) << 1270 << 1271 PHONY += headerdep 1109 PHONY += headerdep 1272 headerdep: 1110 headerdep: 1273 $(Q)find $(srctree)/include/ -name '* 1111 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1274 $(srctree)/scripts/headerdep.pl -I$(s 1112 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1275 1113 1276 # ------------------------------------------- 1114 # --------------------------------------------------------------------------- >> 1115 # Firmware install >> 1116 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware >> 1117 export INSTALL_FW_PATH >> 1118 >> 1119 PHONY += firmware_install >> 1120 firmware_install: >> 1121 @mkdir -p $(objtree)/firmware >> 1122 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install >> 1123 >> 1124 # --------------------------------------------------------------------------- 1277 # Kernel headers 1125 # Kernel headers 1278 1126 1279 #Default location for installed headers 1127 #Default location for installed headers 1280 export INSTALL_HDR_PATH = $(objtree)/usr 1128 export INSTALL_HDR_PATH = $(objtree)/usr 1281 1129 1282 quiet_cmd_headers_install = INSTALL $(INSTALL !! 1130 # If we do an all arch process set dst to asm-$(hdr-arch) 1283 cmd_headers_install = \ !! 1131 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1284 mkdir -p $(INSTALL_HDR_PATH); \ << 1285 rsync -mrl --include='*/' --include=' << 1286 usr/include $(INSTALL_HDR_PATH) << 1287 1132 1288 PHONY += headers_install !! 1133 PHONY += archheaders 1289 headers_install: headers !! 1134 archheaders: 1290 $(call cmd,headers_install) << 1291 1135 1292 PHONY += archheaders archscripts !! 1136 PHONY += archscripts >> 1137 archscripts: 1293 1138 1294 hdr-inst := -f $(srctree)/scripts/Makefile.he !! 1139 PHONY += __headers >> 1140 __headers: $(version_h) scripts_basic asm-generic archheaders archscripts >> 1141 $(Q)$(MAKE) $(build)=scripts build_unifdef >> 1142 >> 1143 PHONY += headers_install_all >> 1144 headers_install_all: >> 1145 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1295 1146 1296 PHONY += headers !! 1147 PHONY += headers_install 1297 headers: $(version_h) scripts_unifdef uapi-as !! 1148 headers_install: __headers 1298 $(if $(filter um, $(SRCARCH)), $(erro !! 1149 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ >> 1150 $(error Headers not exportable for the $(SRCARCH) architecture)) 1299 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1151 $(Q)$(MAKE) $(hdr-inst)=include/uapi 1300 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC !! 1152 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) 1301 1153 1302 ifdef CONFIG_HEADERS_INSTALL !! 1154 PHONY += headers_check_all 1303 prepare: headers !! 1155 headers_check_all: headers_install_all 1304 endif !! 1156 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1305 !! 1157 1306 PHONY += scripts_unifdef !! 1158 PHONY += headers_check 1307 scripts_unifdef: scripts_basic !! 1159 headers_check: headers_install 1308 $(Q)$(MAKE) $(build)=scripts scripts/ !! 1160 $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 1309 !! 1161 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 1310 # ------------------------------------------- << 1311 # Install << 1312 << 1313 # Many distributions have the custom install << 1314 # If DKMS is installed, 'make install' will e << 1315 # to this Makefile to build and install exter << 1316 # Cancel sub_make_done so that options such a << 1317 << 1318 quiet_cmd_install = INSTALL $(INSTALL_PATH) << 1319 cmd_install = unset sub_make_done; $(sr << 1320 << 1321 # ------------------------------------------- << 1322 # vDSO install << 1323 << 1324 PHONY += vdso_install << 1325 vdso_install: export INSTALL_FILES = $(vdso-i << 1326 vdso_install: << 1327 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1328 << 1329 # ------------------------------------------- << 1330 # Tools << 1331 << 1332 ifdef CONFIG_OBJTOOL << 1333 prepare: tools/objtool << 1334 endif << 1335 << 1336 ifdef CONFIG_BPF << 1337 ifdef CONFIG_DEBUG_INFO_BTF << 1338 prepare: tools/bpf/resolve_btfids << 1339 endif << 1340 endif << 1341 << 1342 # The tools build system is not a part of Kbu << 1343 # its own unique issues. If you need to integ << 1344 # please consider locating that tool outside << 1345 # standard Kbuild "hostprogs" syntax instead << 1346 # here. See Documentation/kbuild/makefiles.rs << 1347 << 1348 PHONY += resolve_btfids_clean << 1349 << 1350 resolve_btfids_O = $(abspath $(objtree))/tool << 1351 << 1352 # tools/bpf/resolve_btfids directory might no << 1353 # in output directory, skip its clean in that << 1354 resolve_btfids_clean: << 1355 ifneq ($(wildcard $(resolve_btfids_O)),) << 1356 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ << 1357 endif << 1358 << 1359 # Clear a bunch of variables before executing << 1360 ifeq ($(quiet),silent_) << 1361 tools_silent=s << 1362 endif << 1363 << 1364 tools/: FORCE << 1365 $(Q)mkdir -p $(objtree)/tools << 1366 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1367 << 1368 tools/%: FORCE << 1369 $(Q)mkdir -p $(objtree)/tools << 1370 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1371 1162 1372 # ------------------------------------------- 1163 # --------------------------------------------------------------------------- 1373 # Kernel selftest 1164 # Kernel selftest 1374 1165 1375 PHONY += kselftest 1166 PHONY += kselftest 1376 kselftest: headers !! 1167 kselftest: 1377 $(Q)$(MAKE) -C $(srctree)/tools/testi !! 1168 $(Q)$(MAKE) -C tools/testing/selftests run_tests 1378 1169 1379 kselftest-%: headers FORCE !! 1170 kselftest-clean: 1380 $(Q)$(MAKE) -C $(srctree)/tools/testi !! 1171 $(Q)$(MAKE) -C tools/testing/selftests clean 1381 1172 1382 PHONY += kselftest-merge 1173 PHONY += kselftest-merge 1383 kselftest-merge: 1174 kselftest-merge: 1384 $(if $(wildcard $(objtree)/.config),, 1175 $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1385 $(Q)find $(srctree)/tools/testing/sel !! 1176 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ 1386 xargs $(srctree)/scripts/kcon !! 1177 -m $(objtree)/.config \ 1387 $(Q)$(MAKE) -f $(srctree)/Makefile ol !! 1178 $(srctree)/tools/testing/selftests/*/config >> 1179 +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1388 1180 1389 # ------------------------------------------- 1181 # --------------------------------------------------------------------------- 1390 # Devicetree files !! 1182 # Modules 1391 << 1392 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ << 1393 dtstree := arch/$(SRCARCH)/boot/dts << 1394 endif << 1395 << 1396 ifneq ($(dtstree),) << 1397 << 1398 %.dtb: dtbs_prepare << 1399 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1400 << 1401 %.dtbo: dtbs_prepare << 1402 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1403 1183 1404 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ !! 1184 ifdef CONFIG_MODULES 1405 dtbs: dtbs_prepare << 1406 $(Q)$(MAKE) $(build)=$(dtstree) need- << 1407 1185 1408 # include/config/kernel.release is actually n !! 1186 # By default, build modules as well 1409 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) << 1410 # dtbs_install depend on it as dtbs_install m << 1411 dtbs_prepare: include/config/kernel.release s << 1412 1187 1413 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), !! 1188 all: modules 1414 export CHECK_DTBS=y << 1415 endif << 1416 1189 1417 ifneq ($(CHECK_DTBS),) !! 1190 # Build modules 1418 dtbs_prepare: dt_binding_schemas !! 1191 # 1419 endif !! 1192 # A module can be listed more than once in obj-m resulting in >> 1193 # duplicate lines in modules.order files. Those are removed >> 1194 # using awk while concatenating to the final file. >> 1195 >> 1196 PHONY += modules >> 1197 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin >> 1198 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order >> 1199 @$(kecho) ' Building modules, stage 2.'; >> 1200 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1201 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1420 1202 1421 dtbs_check: dtbs !! 1203 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) >> 1204 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1422 1205 1423 dtbs_install: !! 1206 %/modules.builtin: include/config/auto.conf 1424 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1207 $(Q)$(MAKE) $(modbuiltin)=$* 1425 1208 1426 ifdef CONFIG_OF_EARLY_FLATTREE << 1427 all: dtbs << 1428 endif << 1429 1209 1430 endif !! 1210 # Target to prepare building external modules >> 1211 PHONY += modules_prepare >> 1212 modules_prepare: prepare scripts 1431 1213 1432 PHONY += scripts_dtc !! 1214 # Target to install modules 1433 scripts_dtc: scripts_basic !! 1215 PHONY += modules_install 1434 $(Q)$(MAKE) $(build)=scripts/dtc !! 1216 modules_install: _modinst_ _modinst_post >> 1217 >> 1218 PHONY += _modinst_ >> 1219 _modinst_: >> 1220 @rm -rf $(MODLIB)/kernel >> 1221 @rm -f $(MODLIB)/source >> 1222 @mkdir -p $(MODLIB)/kernel >> 1223 @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source >> 1224 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ >> 1225 rm -f $(MODLIB)/build ; \ >> 1226 ln -s $(CURDIR) $(MODLIB)/build ; \ >> 1227 fi >> 1228 @cp -f $(objtree)/modules.order $(MODLIB)/ >> 1229 @cp -f $(objtree)/modules.builtin $(MODLIB)/ >> 1230 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1231 >> 1232 # This depmod is only for convenience to give the initial >> 1233 # boot a modules.dep even before / is mounted read-write. However the >> 1234 # boot script depmod is the master version. >> 1235 PHONY += _modinst_post >> 1236 _modinst_post: _modinst_ >> 1237 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst >> 1238 $(call cmd,depmod) 1435 1239 1436 ifneq ($(filter dt_binding_check, $(MAKECMDGO !! 1240 ifeq ($(CONFIG_MODULE_SIG), y) 1437 export CHECK_DTBS=y !! 1241 PHONY += modules_sign >> 1242 modules_sign: >> 1243 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1438 endif 1244 endif 1439 1245 1440 PHONY += dt_binding_check dt_binding_schemas !! 1246 else # CONFIG_MODULES 1441 dt_binding_check: dt_binding_schemas scripts_ << 1442 $(Q)$(MAKE) $(build)=Documentation/de << 1443 << 1444 dt_binding_schemas: << 1445 $(Q)$(MAKE) $(build)=Documentation/de << 1446 << 1447 PHONY += dt_compatible_check << 1448 dt_compatible_check: dt_binding_schemas << 1449 $(Q)$(MAKE) $(build)=Documentation/de << 1450 1247 >> 1248 # Modules not configured 1451 # ------------------------------------------- 1249 # --------------------------------------------------------------------------- 1452 # Modules << 1453 << 1454 ifdef CONFIG_MODULES << 1455 1250 1456 # By default, build modules as well !! 1251 PHONY += modules modules_install 1457 !! 1252 modules modules_install: 1458 all: modules !! 1253 @echo >&2 1459 !! 1254 @echo >&2 "The present kernel configuration has modules disabled." 1460 # When we're building modules with modversion !! 1255 @echo >&2 "Type 'make config' and enable loadable module support." 1461 # the built-in objects during the descend as !! 1256 @echo >&2 "Then build a kernel with module support enabled." 1462 # make sure the checksums are up to date befo !! 1257 @echo >&2 1463 ifdef CONFIG_MODVERSIONS !! 1258 @exit 1 1464 KBUILD_BUILTIN := 1 << 1465 endif << 1466 << 1467 # Build modules << 1468 # << 1469 << 1470 # *.ko are usually independent of vmlinux, bu << 1471 # is an exception. << 1472 ifdef CONFIG_DEBUG_INFO_BTF_MODULES << 1473 KBUILD_BUILTIN := 1 << 1474 modules: vmlinux << 1475 endif << 1476 << 1477 modules: modules_prepare << 1478 << 1479 # Target to prepare building external modules << 1480 modules_prepare: prepare << 1481 $(Q)$(MAKE) $(build)=scripts scripts/ << 1482 1259 1483 endif # CONFIG_MODULES 1260 endif # CONFIG_MODULES 1484 1261 1485 ### 1262 ### 1486 # Cleaning is done on three levels. 1263 # Cleaning is done on three levels. 1487 # make clean Delete most generated files 1264 # make clean Delete most generated files 1488 # Leave enough to build extern 1265 # Leave enough to build external modules 1489 # make mrproper Delete the current configura 1266 # make mrproper Delete the current configuration, and all generated files 1490 # make distclean Remove editor backup files, 1267 # make distclean Remove editor backup files, patch leftover files and the like 1491 1268 1492 # Directories & files removed with 'make clea 1269 # Directories & files removed with 'make clean' 1493 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1270 CLEAN_DIRS += $(MODVERDIR) 1494 modules.builtin modules.builti << 1495 modules.builtin.ranges vmlinux << 1496 compile_commands.json rust/tes << 1497 rust-project.json .vmlinux.obj << 1498 1271 1499 # Directories & files removed with 'make mrpr 1272 # Directories & files removed with 'make mrproper' 1500 MRPROPER_FILES += include/config include/gene !! 1273 MRPROPER_DIRS += include/config usr/include include/generated \ 1501 arch/$(SRCARCH)/include/gen !! 1274 arch/*/include/generated .tmp_objdiff 1502 debian snap tar-install PKG !! 1275 MRPROPER_FILES += .config .config.old .version .old_version \ 1503 .config .config.old .versio !! 1276 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 1504 Module.symvers \ !! 1277 signing_key.pem signing_key.priv signing_key.x509 \ 1505 certs/signing_key.pem \ !! 1278 x509.genkey extra_certificates signing_key.x509.keyid \ 1506 certs/x509.genkey \ !! 1279 signing_key.x509.signer vmlinux-gdb.py 1507 vmlinux-gdb.py \ << 1508 rpmbuild \ << 1509 rust/libmacros.so << 1510 1280 1511 # clean - Delete most, but leave enough to bu 1281 # clean - Delete most, but leave enough to build external modules 1512 # 1282 # 1513 clean: private rm-files := $(CLEAN_FILES) !! 1283 clean: rm-dirs := $(CLEAN_DIRS) >> 1284 clean: rm-files := $(CLEAN_FILES) >> 1285 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) 1514 1286 1515 PHONY += archclean vmlinuxclean !! 1287 PHONY += $(clean-dirs) clean archclean vmlinuxclean >> 1288 $(clean-dirs): >> 1289 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1516 1290 1517 vmlinuxclean: 1291 vmlinuxclean: 1518 $(Q)$(CONFIG_SHELL) $(srctree)/script 1292 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1519 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f 1293 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1520 1294 1521 clean: archclean vmlinuxclean resolve_btfids_ !! 1295 clean: archclean vmlinuxclean 1522 1296 1523 # mrproper - Delete all generated files, incl 1297 # mrproper - Delete all generated files, including .config 1524 # 1298 # 1525 mrproper: private rm-files := $(MRPROPER_FILE !! 1299 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1526 mrproper-dirs := $(addprefix _mrproper_, !! 1300 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) >> 1301 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1527 1302 1528 PHONY += $(mrproper-dirs) mrproper !! 1303 PHONY += $(mrproper-dirs) mrproper archmrproper 1529 $(mrproper-dirs): 1304 $(mrproper-dirs): 1530 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1305 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1531 1306 1532 mrproper: clean $(mrproper-dirs) !! 1307 mrproper: clean archmrproper $(mrproper-dirs) >> 1308 $(call cmd,rmdirs) 1533 $(call cmd,rmfiles) 1309 $(call cmd,rmfiles) 1534 @find . $(RCS_FIND_IGNORE) \ << 1535 \( -name '*.rmeta' \) \ << 1536 -type f -print | xargs rm -f << 1537 1310 1538 # distclean 1311 # distclean 1539 # 1312 # 1540 PHONY += distclean 1313 PHONY += distclean 1541 1314 1542 distclean: mrproper 1315 distclean: mrproper 1543 @find . $(RCS_FIND_IGNORE) \ !! 1316 @find $(srctree) $(RCS_FIND_IGNORE) \ 1544 \( -name '*.orig' -o -name '* 1317 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1545 -o -name '*.bak' -o -name '#* !! 1318 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1546 -o -name 'core' -o -name tags !! 1319 -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \ 1547 -o -name GPATH -o -name GRTAG << 1548 -type f -print | xargs rm -f 1320 -type f -print | xargs rm -f 1549 1321 1550 1322 1551 # Packaging of the kernel to various formats 1323 # Packaging of the kernel to various formats 1552 # ------------------------------------------- 1324 # --------------------------------------------------------------------------- >> 1325 # rpm target kept for backward compatibility >> 1326 package-dir := scripts/package 1553 1327 1554 %src-pkg: FORCE 1328 %src-pkg: FORCE 1555 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1329 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1556 %pkg: include/config/kernel.release FORCE 1330 %pkg: include/config/kernel.release FORCE 1557 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1331 $(Q)$(MAKE) $(build)=$(package-dir) $@ >> 1332 rpm: include/config/kernel.release FORCE >> 1333 $(Q)$(MAKE) $(build)=$(package-dir) $@ >> 1334 1558 1335 1559 # Brief documentation of the typical targets 1336 # Brief documentation of the typical targets used 1560 # ------------------------------------------- 1337 # --------------------------------------------------------------------------- 1561 1338 1562 boards := $(wildcard $(srctree)/arch/$(SRCARC 1339 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1563 boards := $(sort $(notdir $(boards))) 1340 boards := $(sort $(notdir $(boards))) 1564 board-dirs := $(dir $(wildcard $(srctree)/arc 1341 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1565 board-dirs := $(sort $(notdir $(board-dirs:/= 1342 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1566 1343 1567 PHONY += help 1344 PHONY += help 1568 help: 1345 help: 1569 @echo 'Cleaning targets:' 1346 @echo 'Cleaning targets:' 1570 @echo ' clean - Remove mo 1347 @echo ' clean - Remove most generated files but keep the config and' 1571 @echo ' enough bu 1348 @echo ' enough build support to build external modules' 1572 @echo ' mrproper - Remove al 1349 @echo ' mrproper - Remove all generated files + config + various backup files' 1573 @echo ' distclean - mrproper 1350 @echo ' distclean - mrproper + remove editor backup and patch files' 1574 @echo '' 1351 @echo '' >> 1352 @echo 'Configuration targets:' 1575 @$(MAKE) -f $(srctree)/scripts/kconfi 1353 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1576 @echo '' 1354 @echo '' 1577 @echo 'Other generic targets:' 1355 @echo 'Other generic targets:' 1578 @echo ' all - Build all 1356 @echo ' all - Build all targets marked with [*]' 1579 @echo '* vmlinux - Build the 1357 @echo '* vmlinux - Build the bare kernel' 1580 @echo '* modules - Build all 1358 @echo '* modules - Build all modules' 1581 @echo ' modules_install - Install a 1359 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1582 @echo ' vdso_install - Install u !! 1360 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' >> 1361 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1583 @echo ' dir/ - Build all 1362 @echo ' dir/ - Build all files in dir and below' 1584 @echo ' dir/file.[ois] - Build spe 1363 @echo ' dir/file.[ois] - Build specified target only' 1585 @echo ' dir/file.ll - Build the << 1586 @echo ' (requires << 1587 @echo ' dir/file.lst - Build spe 1364 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1588 @echo ' (requires 1365 @echo ' (requires a recent binutils and recent build (System.map))' 1589 @echo ' dir/file.ko - Build mod 1366 @echo ' dir/file.ko - Build module including final link' 1590 @echo ' modules_prepare - Set up fo 1367 @echo ' modules_prepare - Set up for building external modules' 1591 @echo ' tags/TAGS - Generate 1368 @echo ' tags/TAGS - Generate tags file for editors' 1592 @echo ' cscope - Generate 1369 @echo ' cscope - Generate cscope index' 1593 @echo ' gtags - Generate 1370 @echo ' gtags - Generate GNU GLOBAL index' 1594 @echo ' kernelrelease - Output th 1371 @echo ' kernelrelease - Output the release version string (use with make -s)' 1595 @echo ' kernelversion - Output th 1372 @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1596 @echo ' image_name - Output th 1373 @echo ' image_name - Output the image name (use with make -s)' 1597 @echo ' headers_install - Install s 1374 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1598 echo ' (default: 1375 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1599 echo '' 1376 echo '' 1600 @echo 'Static analysers:' !! 1377 @echo 'Static analysers' 1601 @echo ' checkstack - Generate !! 1378 @echo ' checkstack - Generate a list of stack hogs' 1602 @echo ' with a st !! 1379 @echo ' namespacecheck - Name space analysis on compiled kernel' 1603 @echo ' versioncheck - Sanity ch 1380 @echo ' versioncheck - Sanity check on version.h usage' 1604 @echo ' includecheck - Check for 1381 @echo ' includecheck - Check for duplicate included header files' 1605 @echo ' export_report - List the 1382 @echo ' export_report - List the usages of all exported symbols' >> 1383 @echo ' headers_check - Sanity check on exported headers' 1606 @echo ' headerdep - Detect in 1384 @echo ' headerdep - Detect inclusion cycles in headers' 1607 @echo ' coccicheck - Check wit !! 1385 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 1608 @echo ' clang-analyzer - Check wit << 1609 @echo ' clang-tidy - Check wit << 1610 @echo '' << 1611 @echo 'Tools:' << 1612 @echo ' nsdeps - Generate << 1613 @echo '' << 1614 @echo 'Kernel selftest:' << 1615 @echo ' kselftest - Build a << 1616 @echo ' Build, << 1617 @echo ' running << 1618 @echo ' Run as << 1619 @echo ' kselftest-all - Build k << 1620 @echo ' kselftest-install - Build a << 1621 @echo ' kselftest-clean - Remove << 1622 @echo ' kselftest-merge - Merge a << 1623 @echo ' kselfte << 1624 @echo '' 1386 @echo '' 1625 @echo 'Rust targets:' !! 1387 @echo 'Kernel selftest' 1626 @echo ' rustavailable - Checks wh !! 1388 @echo ' kselftest - Build and run kernel selftest (run as root)' 1627 @echo ' available !! 1389 @echo ' Build, install, and boot kernel before' 1628 @echo ' rustfmt - Reformat !! 1390 @echo ' running kselftest on it' 1629 @echo ' rustfmtcheck - Checks if !! 1391 @echo ' kselftest-clean - Remove all generated kselftest files' 1630 @echo ' is format !! 1392 @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existed' 1631 @echo ' rustdoc - Generate !! 1393 @echo ' .config.' 1632 @echo ' (requires << 1633 @echo ' rusttest - Runs the << 1634 @echo ' (requires << 1635 @echo ' rust-analyzer - Generate << 1636 @echo ' (requires << 1637 @echo ' dir/file.[os] - Build spe << 1638 @echo ' dir/file.rsi - Build mac << 1639 @echo ' Run with << 1640 @echo ' The outpu << 1641 @echo ' dir/file.ll - Build the << 1642 @echo '' << 1643 @$(if $(dtstree), \ << 1644 echo 'Devicetree:'; \ << 1645 echo '* dtbs - << 1646 echo ' dtbs_install - << 1647 echo ' dt_binding_check - << 1648 echo ' dt_binding_schemas - << 1649 echo ' dtbs_check - << 1650 echo '') << 1651 << 1652 @echo 'Userspace tools targets:' << 1653 @echo ' use "make tools/help"' << 1654 @echo ' or "cd tools; make help"' << 1655 @echo '' 1394 @echo '' 1656 @echo 'Kernel packaging:' 1395 @echo 'Kernel packaging:' 1657 @$(MAKE) -f $(srctree)/scripts/Makefi !! 1396 @$(MAKE) $(build)=$(package-dir) help 1658 @echo '' 1397 @echo '' 1659 @echo 'Documentation targets:' 1398 @echo 'Documentation targets:' 1660 @$(MAKE) -f $(srctree)/Documentation/ !! 1399 @$(MAKE) -f $(srctree)/Documentation/Makefile.sphinx dochelp >> 1400 @echo '' >> 1401 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1661 @echo '' 1402 @echo '' 1662 @echo 'Architecture-specific targets !! 1403 @echo 'Architecture specific targets ($(SRCARCH)):' 1663 @$(or $(archhelp),\ !! 1404 @$(if $(archhelp),$(archhelp),\ 1664 echo ' No architecture-speci !! 1405 echo ' No architecture specific help defined for $(SRCARCH)') 1665 @echo '' 1406 @echo '' 1666 @$(if $(boards), \ 1407 @$(if $(boards), \ 1667 $(foreach b, $(boards), \ 1408 $(foreach b, $(boards), \ 1668 printf " %-27s - Build for % !! 1409 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1669 echo '') 1410 echo '') 1670 @$(if $(board-dirs), \ 1411 @$(if $(board-dirs), \ 1671 $(foreach b, $(board-dirs), \ 1412 $(foreach b, $(board-dirs), \ 1672 printf " %-16s - Show %s-spe 1413 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1673 printf " %-16s - Show all of 1414 printf " %-16s - Show all of the above\\n" help-boards; \ 1674 echo '') 1415 echo '') 1675 1416 1676 @echo ' make V=n [targets] 1: ver !! 1417 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1677 @echo ' 2: giv !! 1418 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1678 @echo ' V=1 an << 1679 @echo ' make O=dir [targets] Locate 1419 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1680 @echo ' make C=1 [targets] Check !! 1420 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1681 @echo ' (spars << 1682 @echo ' make C=2 [targets] Force 1421 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1683 @echo ' make RECORDMCOUNT_WARN=1 [t 1422 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1684 @echo ' make W=n [targets] Enable !! 1423 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1685 @echo ' 1: warnings w 1424 @echo ' 1: warnings which may be relevant and do not occur too often' 1686 @echo ' 2: warnings w 1425 @echo ' 2: warnings which occur quite often but may still be relevant' 1687 @echo ' 3: more obscu 1426 @echo ' 3: more obscure warnings, can most likely be ignored' 1688 @echo ' c: extra chec << 1689 @echo ' e: warnings a << 1690 @echo ' Multiple leve 1427 @echo ' Multiple levels can be combined with W=12 or W=123' 1691 @$(if $(dtstree), \ << 1692 echo ' make CHECK_DTBS=1 [ta << 1693 echo ' This can be ap << 1694 ) << 1695 @echo '' 1428 @echo '' 1696 @echo 'Execute "make" or "make all" 1429 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1697 @echo 'For further info see the ./RE 1430 @echo 'For further info see the ./README file' 1698 1431 1699 1432 1700 help-board-dirs := $(addprefix help-,$(board- 1433 help-board-dirs := $(addprefix help-,$(board-dirs)) 1701 1434 1702 help-boards: $(help-board-dirs) 1435 help-boards: $(help-board-dirs) 1703 1436 1704 boards-per-dir = $(sort $(notdir $(wildcard $ 1437 boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1705 1438 1706 $(help-board-dirs): help-%: 1439 $(help-board-dirs): help-%: 1707 @echo 'Architecture-specific targets !! 1440 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1708 @$(if $(boards-per-dir), \ 1441 @$(if $(boards-per-dir), \ 1709 $(foreach b, $(boards-per-dir 1442 $(foreach b, $(boards-per-dir), \ 1710 printf " %-24s - Build for % 1443 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1711 echo '') 1444 echo '') 1712 1445 1713 1446 1714 # Documentation targets 1447 # Documentation targets 1715 # ------------------------------------------- 1448 # --------------------------------------------------------------------------- 1716 DOC_TARGETS := xmldocs latexdocs pdfdocs html !! 1449 DOC_TARGETS := xmldocs sgmldocs psdocs latexdocs pdfdocs htmldocs mandocs installmandocs epubdocs cleandocs linkcheckdocs 1717 linkcheckdocs dochelp refcheck << 1718 PHONY += $(DOC_TARGETS) 1450 PHONY += $(DOC_TARGETS) 1719 $(DOC_TARGETS): !! 1451 $(DOC_TARGETS): scripts_basic FORCE 1720 $(Q)$(MAKE) $(build)=Documentation $@ !! 1452 $(Q)$(MAKE) $(build)=scripts build_docproc build_check-lc_ctype 1721 !! 1453 $(Q)$(MAKE) $(build)=Documentation -f $(srctree)/Documentation/Makefile.sphinx $@ 1722 !! 1454 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1723 # Rust targets << 1724 # ------------------------------------------- << 1725 << 1726 # "Is Rust available?" target << 1727 PHONY += rustavailable << 1728 rustavailable: << 1729 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1730 << 1731 # Documentation target << 1732 # << 1733 # Using the singular to avoid running afoul o << 1734 PHONY += rustdoc << 1735 rustdoc: prepare << 1736 $(Q)$(MAKE) $(build)=rust $@ << 1737 << 1738 # Testing target << 1739 PHONY += rusttest << 1740 rusttest: prepare << 1741 $(Q)$(MAKE) $(build)=rust $@ << 1742 << 1743 # Formatting targets << 1744 PHONY += rustfmt rustfmtcheck << 1745 << 1746 # We skip `rust/alloc` since we want to minim << 1747 # << 1748 # We match using absolute paths since `find` << 1749 # when matching, which is a problem when e.g. << 1750 # We `grep` afterwards in order to remove the << 1751 rustfmt: << 1752 $(Q)find $(abs_srctree) -type f -name << 1753 -o -path $(abs_srctree)/rust/ << 1754 -o -path $(abs_objtree)/rust/ << 1755 | grep -Fv $(abs_srctree)/rus << 1756 | grep -Fv $(abs_objtree)/rus << 1757 | grep -Fv generated \ << 1758 | xargs $(RUSTFMT) $(rustfmt_ << 1759 << 1760 rustfmtcheck: rustfmt_flags = --check << 1761 rustfmtcheck: rustfmt << 1762 << 1763 # Misc << 1764 # ------------------------------------------- << 1765 << 1766 PHONY += misc-check << 1767 misc-check: << 1768 $(Q)$(srctree)/scripts/misc-check << 1769 << 1770 all: misc-check << 1771 << 1772 PHONY += scripts_gdb << 1773 scripts_gdb: prepare0 << 1774 $(Q)$(MAKE) $(build)=scripts/gdb << 1775 $(Q)ln -fsn $(abspath $(srctree)/scri << 1776 << 1777 ifdef CONFIG_GDB_SCRIPTS << 1778 all: scripts_gdb << 1779 endif << 1780 1455 1781 else # KBUILD_EXTMOD 1456 else # KBUILD_EXTMOD 1782 1457 1783 filechk_kernel.release = echo $(KERNELRELEASE << 1784 << 1785 ### 1458 ### 1786 # External module support. 1459 # External module support. 1787 # When building external modules the kernel u 1460 # When building external modules the kernel used as basis is considered 1788 # read-only, and no consistency checks are ma 1461 # read-only, and no consistency checks are made and the make 1789 # system is not used on the basis kernel. If 1462 # system is not used on the basis kernel. If updates are required 1790 # in the basis kernel ordinary make commands !! 1463 # in the basis kernel ordinary make commands (without M=...) must >> 1464 # be used. >> 1465 # >> 1466 # The following are the only valid targets when building external >> 1467 # modules. >> 1468 # make M=dir clean Delete all automatically generated files >> 1469 # make M=dir modules Make all modules in specified dir >> 1470 # make M=dir Same as 'make M=dir modules' >> 1471 # make M=dir modules_install >> 1472 # Install the modules built in the module directory >> 1473 # Assumes install directory is already created 1791 1474 1792 # We are always building only modules. !! 1475 # We are always building modules 1793 KBUILD_BUILTIN := << 1794 KBUILD_MODULES := 1 1476 KBUILD_MODULES := 1 >> 1477 PHONY += crmodverdir >> 1478 crmodverdir: >> 1479 $(cmd_crmodverdir) >> 1480 >> 1481 PHONY += $(objtree)/Module.symvers >> 1482 $(objtree)/Module.symvers: >> 1483 @test -e $(objtree)/Module.symvers || ( \ >> 1484 echo; \ >> 1485 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ >> 1486 echo " is missing; modules will have no dependencies and modversions."; \ >> 1487 echo ) >> 1488 >> 1489 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) >> 1490 PHONY += $(module-dirs) modules >> 1491 $(module-dirs): crmodverdir $(objtree)/Module.symvers >> 1492 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1795 1493 1796 build-dir := $(KBUILD_EXTMOD) !! 1494 modules: $(module-dirs) >> 1495 @$(kecho) ' Building modules, stage 2.'; >> 1496 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1797 1497 1798 compile_commands.json: $(extmod_prefix)compil !! 1498 PHONY += modules_install 1799 PHONY += compile_commands.json !! 1499 modules_install: _emodinst_ _emodinst_post 1800 1500 1801 clean-dirs := $(KBUILD_EXTMOD) !! 1501 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1802 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1502 PHONY += _emodinst_ 1803 $(KBUILD_EXTMOD)/compile_commands.jso !! 1503 _emodinst_: 1804 !! 1504 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1805 PHONY += prepare !! 1505 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1806 # now expand this into a simple variable to r !! 1506 1807 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT !! 1507 PHONY += _emodinst_post 1808 prepare: !! 1508 _emodinst_post: _emodinst_ 1809 @if [ "$(CC_VERSION_TEXT)" != "$(CONF !! 1509 $(call cmd,depmod) 1810 echo >&2 "warning: the compil !! 1510 1811 echo >&2 " The kernel was bu !! 1511 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1812 echo >&2 " You are using: !! 1512 1813 fi !! 1513 PHONY += $(clean-dirs) clean >> 1514 $(clean-dirs): >> 1515 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) >> 1516 >> 1517 clean: rm-dirs := $(MODVERDIR) >> 1518 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1814 1519 1815 PHONY += help 1520 PHONY += help 1816 help: 1521 help: 1817 @echo ' Building external modules.' 1522 @echo ' Building external modules.' 1818 @echo ' Syntax: make -C path/to/ker 1523 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1819 @echo '' 1524 @echo '' 1820 @echo ' modules - default t 1525 @echo ' modules - default target, build the module(s)' 1821 @echo ' modules_install - install t 1526 @echo ' modules_install - install the module' 1822 @echo ' clean - remove ge 1527 @echo ' clean - remove generated files in module directory only' 1823 @echo ' rust-analyzer - generate << 1824 @echo '' 1528 @echo '' 1825 1529 1826 ifndef CONFIG_MODULES !! 1530 # Dummies... 1827 modules modules_install: __external_modules_e !! 1531 PHONY += prepare scripts 1828 __external_modules_error: !! 1532 prepare: ; 1829 @echo >&2 '***' !! 1533 scripts: ; 1830 @echo >&2 '*** The present kernel dis << 1831 @echo >&2 '*** You cannot build or in << 1832 @echo >&2 '***' << 1833 @false << 1834 endif << 1835 << 1836 endif # KBUILD_EXTMOD 1534 endif # KBUILD_EXTMOD 1837 1535 1838 # ------------------------------------------- << 1839 # Modules << 1840 << 1841 PHONY += modules modules_install modules_sign << 1842 << 1843 modules_install: << 1844 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1845 sign-only=$(if $(filter modules_insta << 1846 << 1847 ifeq ($(CONFIG_MODULE_SIG),y) << 1848 # modules_sign is a subset of modules_install << 1849 # 'make modules_install modules_sign' is equi << 1850 modules_sign: modules_install << 1851 @: << 1852 else << 1853 modules_sign: << 1854 @echo >&2 '***' << 1855 @echo >&2 '*** CONFIG_MODULE_SIG is d << 1856 @echo >&2 '***' << 1857 @false << 1858 endif << 1859 << 1860 ifdef CONFIG_MODULES << 1861 << 1862 $(MODORDER): $(build-dir) << 1863 @: << 1864 << 1865 # KBUILD_MODPOST_NOFINAL can be set to skip t << 1866 # This is solely useful to speed up test comp << 1867 modules: modpost << 1868 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1869 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1870 endif << 1871 << 1872 PHONY += modules_check << 1873 modules_check: $(MODORDER) << 1874 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1875 << 1876 else # CONFIG_MODULES << 1877 << 1878 modules: << 1879 @: << 1880 << 1881 KBUILD_MODULES := << 1882 << 1883 endif # CONFIG_MODULES << 1884 << 1885 PHONY += modpost << 1886 modpost: $(if $(single-build),, $(if $(KBUILD << 1887 $(if $(KBUILD_MODULES), modules_chec << 1888 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1889 << 1890 # Single targets << 1891 # ------------------------------------------- << 1892 # To build individual files in subdirectories << 1893 # << 1894 # make foo/bar/baz.s << 1895 # << 1896 # The supported suffixes for single-target ar << 1897 # << 1898 # To build only under specific subdirectories << 1899 # << 1900 # make foo/bar/baz/ << 1901 << 1902 ifdef single-build << 1903 << 1904 # .ko is special because modpost is needed << 1905 single-ko := $(sort $(filter %.ko, $(MAKECMDG << 1906 single-no-ko := $(filter-out $(single-ko), $( << 1907 $(foreach x, o mod, $(patsubs << 1908 << 1909 $(single-ko): single_modules << 1910 @: << 1911 $(single-no-ko): $(build-dir) << 1912 @: << 1913 << 1914 # Remove MODORDER when done because it is not << 1915 PHONY += single_modules << 1916 single_modules: $(single-no-ko) modules_prepa << 1917 $(Q){ $(foreach m, $(single-ko), echo << 1918 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1919 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1920 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1921 endif << 1922 $(Q)rm -f $(MODORDER) << 1923 << 1924 single-goals := $(addprefix $(build-dir)/, $( << 1925 << 1926 KBUILD_MODULES := 1 << 1927 << 1928 endif << 1929 << 1930 # Preset locale variables to speed up the bui << 1931 # tweaks to this spot to avoid wrong language << 1932 # make menuconfig etc. << 1933 # Error messages still appears in the origina << 1934 PHONY += $(build-dir) << 1935 $(build-dir): prepare << 1936 $(Q)$(MAKE) $(build)=$@ need-builtin= << 1937 << 1938 clean-dirs := $(addprefix _clean_, $(clean-di << 1939 PHONY += $(clean-dirs) clean << 1940 $(clean-dirs): << 1941 $(Q)$(MAKE) $(clean)=$(patsubst _clea << 1942 << 1943 clean: $(clean-dirs) 1536 clean: $(clean-dirs) >> 1537 $(call cmd,rmdirs) 1944 $(call cmd,rmfiles) 1538 $(call cmd,rmfiles) 1945 @find $(or $(KBUILD_EXTMOD), .) $(RCS !! 1539 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1946 \( -name '*.[aios]' -o -name !! 1540 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1947 -o -name '*.ko.*' \ 1541 -o -name '*.ko.*' \ 1948 -o -name '*.dtb' -o -name '*. !! 1542 -o -name '*.dwo' \ 1949 -o -name '*.dtb.S' -o -name ' !! 1543 -o -name '*.su' \ 1950 -o -name '*.dt.yaml' -o -name << 1951 -o -name '*.dwo' -o -name '*. << 1952 -o -name '*.su' -o -name '*.m << 1953 -o -name '.*.d' -o -name '.*. 1544 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1954 -o -name '*.lex.c' -o -name ' << 1955 -o -name '*.asn1.[ch]' \ << 1956 -o -name '*.symtypes' -o -nam 1545 -o -name '*.symtypes' -o -name 'modules.order' \ >> 1546 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1957 -o -name '*.c.[012]*.*' \ 1547 -o -name '*.c.[012]*.*' \ 1958 -o -name '*.ll' \ !! 1548 -o -name '*.gcno' \) -type f -print | xargs rm -f 1959 -o -name '*.gcno' \ << 1960 \) -type f -print \ << 1961 -o -name '.tmp_*' -print \ << 1962 | xargs rm -rf << 1963 1549 1964 # Generate tags for editors 1550 # Generate tags for editors 1965 # ------------------------------------------- 1551 # --------------------------------------------------------------------------- 1966 quiet_cmd_tags = GEN $@ 1552 quiet_cmd_tags = GEN $@ 1967 cmd_tags = $(BASH) $(srctree)/scripts/t !! 1553 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1968 1554 1969 tags TAGS cscope gtags: FORCE 1555 tags TAGS cscope gtags: FORCE 1970 $(call cmd,tags) 1556 $(call cmd,tags) 1971 1557 1972 # Generate rust-project.json (a file that des << 1973 # Rust projects) for rust-analyzer (an implem << 1974 # Protocol). << 1975 PHONY += rust-analyzer << 1976 rust-analyzer: << 1977 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1978 $(Q)$(MAKE) $(build)=rust $@ << 1979 << 1980 # Script to generate missing namespace depend << 1981 # ------------------------------------------- << 1982 << 1983 PHONY += nsdeps << 1984 nsdeps: export KBUILD_NSDEPS=1 << 1985 nsdeps: modules << 1986 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1987 << 1988 # Clang Tooling << 1989 # ------------------------------------------- << 1990 << 1991 quiet_cmd_gen_compile_commands = GEN $@ << 1992 cmd_gen_compile_commands = $(PYTHON3) $ << 1993 << 1994 $(extmod_prefix)compile_commands.json: $(srct << 1995 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K << 1996 $(if $(CONFIG_MODULES), $(MODORDER)) << 1997 $(call if_changed,gen_compile_command << 1998 << 1999 targets += $(extmod_prefix)compile_commands.j << 2000 << 2001 PHONY += clang-tidy clang-analyzer << 2002 << 2003 ifdef CONFIG_CC_IS_CLANG << 2004 quiet_cmd_clang_tools = CHECK $< << 2005 cmd_clang_tools = $(PYTHON3) $(srctree) << 2006 << 2007 clang-tidy clang-analyzer: $(extmod_prefix)co << 2008 $(call cmd,clang_tools) << 2009 else << 2010 clang-tidy clang-analyzer: << 2011 @echo "$@ requires CC=clang" >&2 << 2012 @false << 2013 endif << 2014 << 2015 # Scripts to check various things for consist 1558 # Scripts to check various things for consistency 2016 # ------------------------------------------- 1559 # --------------------------------------------------------------------------- 2017 1560 2018 PHONY += includecheck versioncheck coccicheck !! 1561 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 2019 1562 2020 includecheck: 1563 includecheck: 2021 find $(srctree)/* $(RCS_FIND_IGNORE) 1564 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2022 -name '*.[hcS]' -type f -prin 1565 -name '*.[hcS]' -type f -print | sort \ 2023 | xargs $(PERL) -w $(srctree) 1566 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 2024 1567 2025 versioncheck: 1568 versioncheck: 2026 find $(srctree)/* $(RCS_FIND_IGNORE) 1569 find $(srctree)/* $(RCS_FIND_IGNORE) \ 2027 -name '*.[hcS]' -type f -prin 1570 -name '*.[hcS]' -type f -print | sort \ 2028 | xargs $(PERL) -w $(srctree) 1571 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 2029 1572 2030 coccicheck: 1573 coccicheck: 2031 $(Q)$(BASH) $(srctree)/scripts/$@ !! 1574 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ >> 1575 >> 1576 namespacecheck: >> 1577 $(PERL) $(srctree)/scripts/namespace.pl 2032 1578 2033 export_report: 1579 export_report: 2034 $(PERL) $(srctree)/scripts/export_rep 1580 $(PERL) $(srctree)/scripts/export_report.pl 2035 1581 >> 1582 endif #ifeq ($(config-targets),1) >> 1583 endif #ifeq ($(mixed-targets),1) >> 1584 2036 PHONY += checkstack kernelrelease kernelversi 1585 PHONY += checkstack kernelrelease kernelversion image_name 2037 1586 2038 # UML needs a little special treatment here. 1587 # UML needs a little special treatment here. It wants to use the host 2039 # toolchain, so needs $(SUBARCH) passed to ch 1588 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 2040 # else wants $(ARCH), including people doing 1589 # else wants $(ARCH), including people doing cross-builds, which means 2041 # that $(SUBARCH) doesn't work here. 1590 # that $(SUBARCH) doesn't work here. 2042 ifeq ($(ARCH), um) 1591 ifeq ($(ARCH), um) 2043 CHECKSTACK_ARCH := $(SUBARCH) 1592 CHECKSTACK_ARCH := $(SUBARCH) 2044 else 1593 else 2045 CHECKSTACK_ARCH := $(ARCH) 1594 CHECKSTACK_ARCH := $(ARCH) 2046 endif 1595 endif 2047 MINSTACKSIZE ?= 100 << 2048 checkstack: 1596 checkstack: 2049 $(OBJDUMP) -d vmlinux $$(find . -name 1597 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 2050 $(PERL) $(srctree)/scripts/checkstack !! 1598 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 2051 1599 2052 kernelrelease: 1600 kernelrelease: 2053 @$(filechk_kernel.release) !! 1601 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 2054 1602 2055 kernelversion: 1603 kernelversion: 2056 @echo $(KERNELVERSION) 1604 @echo $(KERNELVERSION) 2057 1605 2058 image_name: 1606 image_name: 2059 @echo $(KBUILD_IMAGE) 1607 @echo $(KBUILD_IMAGE) 2060 1608 2061 PHONY += run-command !! 1609 # Clear a bunch of variables before executing the submake 2062 run-command: !! 1610 tools/: FORCE 2063 $(Q)$(KBUILD_RUN_COMMAND) !! 1611 $(Q)mkdir -p $(objtree)/tools >> 1612 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ >> 1613 >> 1614 tools/%: FORCE >> 1615 $(Q)mkdir -p $(objtree)/tools >> 1616 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ $* >> 1617 >> 1618 # Single targets >> 1619 # --------------------------------------------------------------------------- >> 1620 # Single targets are compatible with: >> 1621 # - build with mixed source and output >> 1622 # - build with separate output dir 'make O=...' >> 1623 # - external modules >> 1624 # >> 1625 # target-dir => where to store outputfile >> 1626 # build-dir => directory in kernel source tree to use >> 1627 >> 1628 ifeq ($(KBUILD_EXTMOD),) >> 1629 build-dir = $(patsubst %/,%,$(dir $@)) >> 1630 target-dir = $(dir $@) >> 1631 else >> 1632 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) >> 1633 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) >> 1634 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) >> 1635 endif >> 1636 >> 1637 %.s: %.c prepare scripts FORCE >> 1638 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1639 %.i: %.c prepare scripts FORCE >> 1640 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1641 %.o: %.c prepare scripts FORCE >> 1642 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1643 %.lst: %.c prepare scripts FORCE >> 1644 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1645 %.s: %.S prepare scripts FORCE >> 1646 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1647 %.o: %.S prepare scripts FORCE >> 1648 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1649 %.symtypes: %.c prepare scripts FORCE >> 1650 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1651 >> 1652 # Modules >> 1653 /: prepare scripts FORCE >> 1654 $(cmd_crmodverdir) >> 1655 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1656 $(build)=$(build-dir) >> 1657 # Make sure the latest headers are built for Documentation >> 1658 Documentation/ samples/: headers_install >> 1659 %/: prepare scripts FORCE >> 1660 $(cmd_crmodverdir) >> 1661 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1662 $(build)=$(build-dir) >> 1663 %.ko: prepare scripts FORCE >> 1664 $(cmd_crmodverdir) >> 1665 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1666 $(build)=$(build-dir) $(@:.ko=.o) >> 1667 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1668 >> 1669 # FIXME Should go into a make.lib or something >> 1670 # =========================================================================== >> 1671 >> 1672 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) >> 1673 cmd_rmdirs = rm -rf $(rm-dirs) 2064 1674 2065 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 1675 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2066 cmd_rmfiles = rm -rf $(rm-files) !! 1676 cmd_rmfiles = rm -f $(rm-files) 2067 1677 2068 # read saved command lines for existing targe !! 1678 # Run depmod only if we have System.map and depmod is executable 2069 existing-targets := $(wildcard $(sort $(targe !! 1679 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) >> 1680 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ >> 1681 $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" 2070 1682 2071 -include $(foreach f,$(existing-targets),$(di !! 1683 # Create temporary dir for module support files >> 1684 # clean it up only when building all modules >> 1685 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ >> 1686 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) >> 1687 >> 1688 # read all saved command lines >> 1689 >> 1690 targets := $(wildcard $(sort $(targets))) >> 1691 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) >> 1692 >> 1693 ifneq ($(cmd_files),) >> 1694 $(cmd_files): ; # Do not try to update included dependency files >> 1695 include $(cmd_files) >> 1696 endif 2072 1697 2073 endif # config-build !! 1698 endif # skip-makefile 2074 endif # mixed-build << 2075 endif # need-sub-make << 2076 1699 2077 PHONY += FORCE 1700 PHONY += FORCE 2078 FORCE: 1701 FORCE: 2079 1702 2080 # Declare the contents of the PHONY variable !! 1703 # Declare the contents of the .PHONY variable as phony. We keep that 2081 # information in a variable so we can use it 1704 # information in a variable so we can use it in if_changed and friends. 2082 .PHONY: $(PHONY) 1705 .PHONY: $(PHONY)
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