1 # SPDX-License-Identifier: GPL-2.0 !! 1 VERSION = 2 2 VERSION = 6 !! 2 PATCHLEVEL = 6 3 PATCHLEVEL = 11 !! 3 SUBLEVEL = 32 4 SUBLEVEL = 5 !! 4 EXTRAVERSION = .71 5 EXTRAVERSION = !! 5 NAME = Man-Eating Seals of Antiquity 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 # Do not: 15 $(error GNU Make >= 4.0 is required. Your Make !! 14 # o use make's built-in rules and variables 16 endif !! 15 # (this increases performance and avoids hard-to-debug behaviour); 17 !! 16 # o print "Entering directory ..."; 18 $(if $(filter __%, $(MAKECMDGOALS)), \ !! 17 MAKEFLAGS += -rR --no-print-directory 19 $(error targets prefixed with '__' are << 20 << 21 # That's our default target when none is given << 22 PHONY := __all << 23 __all: << 24 18 25 # We are using a recursive build, so we need t 19 # We are using a recursive build, so we need to do a little thinking 26 # to get the ordering right. 20 # to get the ordering right. 27 # 21 # 28 # Most importantly: sub-Makefiles should only 22 # Most importantly: sub-Makefiles should only ever modify files in 29 # their own directory. If in some directory we 23 # their own directory. If in some directory we have a dependency on 30 # a file in another dir (which doesn't happen 24 # a file in another dir (which doesn't happen often, but it's often 31 # unavoidable when linking the built-in.a targ !! 25 # unavoidable when linking the built-in.o targets which finally 32 # turn into vmlinux), we will call a sub make 26 # turn into vmlinux), we will call a sub make in that other dir, and 33 # after that we are sure that everything which 27 # after that we are sure that everything which is in that other dir 34 # is now up to date. 28 # is now up to date. 35 # 29 # 36 # The only cases where we need to modify files 30 # The only cases where we need to modify files which have global 37 # effects are thus separated out and done befo 31 # effects are thus separated out and done before the recursive 38 # descending is started. They are now explicit 32 # descending is started. They are now explicitly listed as the 39 # prepare rule. 33 # prepare rule. 40 34 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 << 61 # -------------------------------------------- << 62 # << 63 # Most of build commands in Kbuild start with << 64 # "quiet_cmd_*". If defined, the short log is << 65 # that command is printed by default. << 66 # << 67 # e.g.) << 68 # quiet_cmd_depmod = DEPMOD $(MODLIB) << 69 # cmd_depmod = $(srctree)/scripts/dep << 70 # << 71 # A simple variant is to prefix commands with << 72 # for commands that shall be hidden in non-ver << 73 # << 74 # $(Q)$(MAKE) $(build)=scripts/basic << 75 # << 76 # If KBUILD_VERBOSE contains 1, the whole comm << 77 # If KBUILD_VERBOSE contains 2, the reason for << 78 # << 79 # To put more focus on warnings, be less verbo 35 # To put more focus on warnings, be less verbose as default 80 # Use 'make V=1' to see the full commands 36 # Use 'make V=1' to see the full commands 81 37 82 ifeq ("$(origin V)", "command line") 38 ifeq ("$(origin V)", "command line") 83 KBUILD_VERBOSE = $(V) 39 KBUILD_VERBOSE = $(V) 84 endif 40 endif 85 !! 41 ifndef KBUILD_VERBOSE 86 quiet = quiet_ !! 42 KBUILD_VERBOSE = 0 87 Q = @ << 88 << 89 ifneq ($(findstring 1, $(KBUILD_VERBOSE)),) << 90 quiet = << 91 Q = << 92 endif << 93 << 94 # If the user is running make -s (silent mode) << 95 # commands << 96 ifneq ($(findstring s,$(firstword -$(MAKEFLAGS << 97 quiet=silent_ << 98 override KBUILD_VERBOSE := << 99 endif 43 endif 100 44 101 export quiet Q KBUILD_VERBOSE << 102 << 103 # Call a source code checker (by default, "spa 45 # Call a source code checker (by default, "sparse") as part of the 104 # C compilation. 46 # C compilation. 105 # 47 # 106 # Use 'make C=1' to enable checking of only re 48 # Use 'make C=1' to enable checking of only re-compiled files. 107 # Use 'make C=2' to enable checking of *all* s 49 # Use 'make C=2' to enable checking of *all* source files, regardless 108 # of whether they are re-compiled or not. 50 # of whether they are re-compiled or not. 109 # 51 # 110 # See the file "Documentation/dev-tools/sparse !! 52 # See the file "Documentation/sparse.txt" for more details, including 111 # including where to get the "sparse" utility. !! 53 # where to get the "sparse" utility. 112 54 113 ifeq ("$(origin C)", "command line") 55 ifeq ("$(origin C)", "command line") 114 KBUILD_CHECKSRC = $(C) 56 KBUILD_CHECKSRC = $(C) 115 endif 57 endif 116 ifndef KBUILD_CHECKSRC 58 ifndef KBUILD_CHECKSRC 117 KBUILD_CHECKSRC = 0 59 KBUILD_CHECKSRC = 0 118 endif 60 endif 119 61 120 export KBUILD_CHECKSRC !! 62 # Use make M=dir to specify directory of external module to build 121 !! 63 # Old syntax make ... SUBDIRS=$PWD is still supported 122 # Enable "clippy" (a linter) as part of the Ru !! 64 # Setting the environment variable KBUILD_EXTMOD take precedence 123 # !! 65 ifdef SUBDIRS 124 # Use 'make CLIPPY=1' to enable it. !! 66 KBUILD_EXTMOD ?= $(SUBDIRS) 125 ifeq ("$(origin CLIPPY)", "command line") << 126 KBUILD_CLIPPY := $(CLIPPY) << 127 endif 67 endif 128 68 129 export KBUILD_CLIPPY << 130 << 131 # Use make M=dir or set the environment variab << 132 # directory of external module to build. Setti << 133 ifeq ("$(origin M)", "command line") 69 ifeq ("$(origin M)", "command line") 134 KBUILD_EXTMOD := $(M) 70 KBUILD_EXTMOD := $(M) 135 endif 71 endif 136 72 137 $(if $(word 2, $(KBUILD_EXTMOD)), \ !! 73 # kbuild supports saving output files in a separate directory. 138 $(error building multiple external mod !! 74 # To locate output files in a separate directory two syntaxes are supported. 139 !! 75 # In both cases the working directory must be the root of the kernel src. 140 $(foreach x, % :, $(if $(findstring $x, $(KBUI << 141 $(error module directory path cannot c << 142 << 143 # Remove trailing slashes << 144 ifneq ($(filter %/, $(KBUILD_EXTMOD)),) << 145 KBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTM << 146 endif << 147 << 148 export KBUILD_EXTMOD << 149 << 150 # backward compatibility << 151 KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC << 152 << 153 ifeq ("$(origin W)", "command line") << 154 KBUILD_EXTRA_WARN := $(W) << 155 endif << 156 << 157 export KBUILD_EXTRA_WARN << 158 << 159 # Kbuild will save output files in the current << 160 # This does not need to match to the root of t << 161 # << 162 # For example, you can do this: << 163 # << 164 # cd /dir/to/store/output/files; make -f /dir << 165 # << 166 # If you want to save output files in a differ << 167 # two syntaxes to specify it. << 168 # << 169 # 1) O= 76 # 1) O= 170 # Use "make O=dir/to/store/output/files/" 77 # Use "make O=dir/to/store/output/files/" 171 # 78 # 172 # 2) Set KBUILD_OUTPUT 79 # 2) Set KBUILD_OUTPUT 173 # Set the environment variable KBUILD_OUTPUT t !! 80 # Set the environment variable KBUILD_OUTPUT to point to the directory 174 # export KBUILD_OUTPUT=dir/to/store/output/fil !! 81 # where the output files shall be placed. >> 82 # export KBUILD_OUTPUT=dir/to/store/output/files/ >> 83 # make 175 # 84 # 176 # The O= assignment takes precedence over the 85 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 177 # variable. 86 # variable. 178 87 179 # Do we want to change the working directory? << 180 ifeq ("$(origin O)", "command line") << 181 KBUILD_OUTPUT := $(O) << 182 endif << 183 88 184 ifneq ($(KBUILD_OUTPUT),) !! 89 # KBUILD_SRC is set on invocation of make in OBJ directory 185 # $(realpath ...) gets empty if the path does !! 90 # KBUILD_SRC is not intended to be used by the regular user (for now) 186 $(shell mkdir -p "$(KBUILD_OUTPUT)") !! 91 ifeq ($(KBUILD_SRC),) 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 $(error source directory cannot contain spaces << 194 endif << 195 << 196 export sub_make_done := 1 << 197 << 198 endif # sub_make_done << 199 << 200 ifeq ($(abs_objtree),$(CURDIR)) << 201 # Suppress "Entering directory ..." if we are << 202 no-print-directory := --no-print-directory << 203 else << 204 # Recursion to show "Entering directory ..." << 205 need-sub-make := 1 << 206 endif << 207 92 208 ifeq ($(filter --no-print-directory, $(MAKEFLA !! 93 # OK, Make called in directory where kernel src resides 209 # If --no-print-directory is unset, recurse on !! 94 # Do we want to locate output files in a separate directory? 210 # You may end up recursing into __sub-make twi !! 95 ifeq ("$(origin O)", "command line") 211 # behavior change in GNU Make 4.4.1. !! 96 KBUILD_OUTPUT := $(O) 212 need-sub-make := 1 << 213 endif 97 endif 214 98 215 ifeq ($(need-sub-make),1) !! 99 # That's our default target when none is given on the command line 216 !! 100 PHONY := _all 217 PHONY += $(MAKECMDGOALS) __sub-make !! 101 _all: 218 102 219 $(filter-out $(this-makefile), $(MAKECMDGOALS) !! 103 # Cancel implicit rules on top Makefile 220 @: !! 104 $(CURDIR)/Makefile Makefile: ; 221 105 >> 106 ifneq ($(KBUILD_OUTPUT),) 222 # Invoke a second make in the output directory 107 # Invoke a second make in the output directory, passing relevant variables 223 __sub-make: !! 108 # check that the output directory actually exists 224 $(Q)$(MAKE) $(no-print-directory) -C $ !! 109 saved-output := $(KBUILD_OUTPUT) 225 -f $(abs_srctree)/Makefile $(MAKECMDGO !! 110 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) >> 111 $(if $(KBUILD_OUTPUT),, \ >> 112 $(error output directory "$(saved-output)" does not exist)) >> 113 >> 114 PHONY += $(MAKECMDGOALS) sub-make >> 115 >> 116 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make >> 117 $(Q)@: >> 118 >> 119 sub-make: FORCE >> 120 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ >> 121 KBUILD_SRC=$(CURDIR) \ >> 122 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ >> 123 $(filter-out _all sub-make,$(MAKECMDGOALS)) 226 124 227 else # need-sub-make !! 125 # Leave processing to above invocation of make >> 126 skip-makefile := 1 >> 127 endif # ifneq ($(KBUILD_OUTPUT),) >> 128 endif # ifeq ($(KBUILD_SRC),) 228 129 229 # We process the rest of the Makefile if this 130 # We process the rest of the Makefile if this is the final invocation of make >> 131 ifeq ($(skip-makefile),) 230 132 231 ifeq ($(abs_srctree),$(abs_objtree)) !! 133 # If building an external module we do not care about the all: rule 232 # building in the source tree !! 134 # but instead _all depend on modules 233 srctree := . !! 135 PHONY += all 234 building_out_of_srctree := << 235 else << 236 ifeq ($(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 := $(abs_srctree) << 247 endif << 248 << 249 objtree := . << 250 << 251 VPATH := << 252 << 253 ifeq ($(KBUILD_EXTMOD),) << 254 ifdef building_out_of_srctree << 255 VPATH := $(srctree) << 256 endif << 257 endif << 258 << 259 export building_out_of_srctree srctree objtree << 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 $(no-dot-config-targets << 289 need-config := << 290 endif << 291 endif << 292 << 293 ifneq ($(filter $(no-sync-config-targets), $(M << 294 ifeq ($(filter-out $(no-sync-config-target << 295 may-sync-config := << 296 endif << 297 endif << 298 << 299 need-compiler := $(may-sync-config) << 300 << 301 ifneq ($(KBUILD_EXTMOD),) << 302 may-sync-config := << 303 endif << 304 << 305 ifeq ($(KBUILD_EXTMOD),) 136 ifeq ($(KBUILD_EXTMOD),) 306 ifneq ($(filter %config,$(MAKECMDGOALS)),) !! 137 _all: all 307 config-build := 1 !! 138 else 308 ifneq ($(words $(MAKECMDGOALS)),1) !! 139 _all: modules 309 mixed-build := 1 << 310 endif << 311 endif << 312 endif << 313 << 314 # We cannot build single targets and the other << 315 ifneq ($(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 << 328 << 329 # install and modules_install need also be pro << 330 ifneq ($(filter install,$(MAKECMDGOALS)),) << 331 ifneq ($(filter modules_install,$(MAKECMDG << 332 mixed-build := 1 << 333 endif << 334 endif 140 endif 335 141 336 ifdef mixed-build !! 142 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) 337 # ============================================ !! 143 objtree := $(CURDIR) 338 # We're called with mixed targets (*config and !! 144 src := $(srctree) 339 # Handle them one by one. !! 145 obj := $(objtree) 340 << 341 PHONY += $(MAKECMDGOALS) __build_one_by_one << 342 << 343 $(MAKECMDGOALS): __build_one_by_one << 344 @: << 345 146 346 __build_one_by_one: !! 147 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 347 $(Q)set -e; \ << 348 for i in $(MAKECMDGOALS); do \ << 349 $(MAKE) -f $(srctree)/Makefile << 350 done << 351 148 352 else # !mixed-build !! 149 export srctree objtree VPATH 353 150 354 include $(srctree)/scripts/Kbuild.include << 355 151 356 # Read KERNELRELEASE from include/config/kerne !! 152 # SUBARCH tells the usermode build what the underlying arch is. That is set 357 KERNELRELEASE = $(call read-file, include/conf !! 153 # first, and if a usermode build is happening, the "ARCH=um" on the command 358 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),. !! 154 # line overrides the setting of ARCH below. If a native build is happening, 359 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEA !! 155 # then ARCH is assigned, getting whatever value it gets normally, and >> 156 # SUBARCH is subsequently ignored. 360 157 361 include $(srctree)/scripts/subarch.include !! 158 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ >> 159 -e s/arm.*/arm/ -e s/sa110/arm/ \ >> 160 -e s/s390x/s390/ -e s/parisc64/parisc/ \ >> 161 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ >> 162 -e s/sh[234].*/sh/ ) 362 163 363 # Cross compiling and selecting different set 164 # Cross compiling and selecting different set of gcc/bin-utils 364 # -------------------------------------------- 165 # --------------------------------------------------------------------------- 365 # 166 # 366 # When performing cross compilation for other 167 # When performing cross compilation for other architectures ARCH shall be set 367 # to the target architecture. (See arch/* for 168 # to the target architecture. (See arch/* for the possibilities). 368 # ARCH can be set during invocation of make: 169 # ARCH can be set during invocation of make: 369 # make ARCH=arm64 !! 170 # make ARCH=ia64 370 # Another way is to have ARCH set in the envir 171 # Another way is to have ARCH set in the environment. 371 # The default ARCH is the host where make is e 172 # The default ARCH is the host where make is executed. 372 173 373 # CROSS_COMPILE specify the prefix used for al 174 # CROSS_COMPILE specify the prefix used for all executables used 374 # during compilation. Only gcc and related bin 175 # during compilation. Only gcc and related bin-utils executables 375 # are prefixed with $(CROSS_COMPILE). 176 # are prefixed with $(CROSS_COMPILE). 376 # CROSS_COMPILE can be set on the command line 177 # CROSS_COMPILE can be set on the command line 377 # make CROSS_COMPILE=aarch64-linux-gnu- !! 178 # make CROSS_COMPILE=ia64-linux- 378 # Alternatively CROSS_COMPILE can be set in th 179 # Alternatively CROSS_COMPILE can be set in the environment. 379 # Default value for CROSS_COMPILE is not to pr 180 # Default value for CROSS_COMPILE is not to prefix executables 380 # Note: Some architectures assign CROSS_COMPIL 181 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile >> 182 export KBUILD_BUILDHOST := $(SUBARCH) 381 ARCH ?= $(SUBARCH) 183 ARCH ?= $(SUBARCH) >> 184 CROSS_COMPILE ?= 382 185 383 # Architecture as present in compile.h 186 # Architecture as present in compile.h 384 UTS_MACHINE := $(ARCH) 187 UTS_MACHINE := $(ARCH) 385 SRCARCH := $(ARCH) 188 SRCARCH := $(ARCH) 386 189 387 # Additional ARCH settings for x86 190 # Additional ARCH settings for x86 388 ifeq ($(ARCH),i386) 191 ifeq ($(ARCH),i386) 389 SRCARCH := x86 192 SRCARCH := x86 390 endif 193 endif 391 ifeq ($(ARCH),x86_64) 194 ifeq ($(ARCH),x86_64) 392 SRCARCH := x86 195 SRCARCH := x86 393 endif 196 endif 394 197 395 # Additional ARCH settings for sparc 198 # Additional ARCH settings for sparc 396 ifeq ($(ARCH),sparc32) << 397 SRCARCH := sparc << 398 endif << 399 ifeq ($(ARCH),sparc64) 199 ifeq ($(ARCH),sparc64) 400 SRCARCH := sparc 200 SRCARCH := sparc 401 endif 201 endif 402 202 403 # Additional ARCH settings for parisc !! 203 # Additional ARCH settings for sh 404 ifeq ($(ARCH),parisc64) !! 204 ifeq ($(ARCH),sh64) 405 SRCARCH := parisc !! 205 SRCARCH := sh 406 endif 206 endif 407 207 408 export cross_compiling := !! 208 # Where to locate arch specific headers 409 ifneq ($(SRCARCH),$(SUBARCH)) !! 209 hdr-arch := $(SRCARCH) 410 cross_compiling := 1 !! 210 >> 211 ifeq ($(ARCH),m68knommu) >> 212 hdr-arch := m68k 411 endif 213 endif 412 214 413 KCONFIG_CONFIG ?= .config 215 KCONFIG_CONFIG ?= .config 414 export KCONFIG_CONFIG << 415 216 416 # SHELL used by kbuild 217 # SHELL used by kbuild 417 CONFIG_SHELL := sh !! 218 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ >> 219 else if [ -x /bin/bash ]; then echo /bin/bash; \ >> 220 else echo sh; fi ; fi) >> 221 >> 222 HOSTCC = gcc >> 223 HOSTCXX = g++ >> 224 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer >> 225 HOSTCXXFLAGS = -O2 >> 226 >> 227 # Decide whether to build built-in, modular, or both. >> 228 # Normally, just do built-in. >> 229 >> 230 KBUILD_MODULES := >> 231 KBUILD_BUILTIN := 1 >> 232 >> 233 # If we have only "make modules", don't compile built-in objects. >> 234 # When we're building modules with modversions, we need to consider >> 235 # the built-in objects during the descend as well, in order to >> 236 # make sure the checksums are up to date before we record them. >> 237 >> 238 ifeq ($(MAKECMDGOALS),modules) >> 239 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) >> 240 endif 418 241 419 HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS !! 242 # If we have "make <whatever> modules", compile modules 420 HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAG !! 243 # in addition to whatever we do anyway. 421 HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/d !! 244 # Just "make" or "make all" shall build modules as well 422 245 423 ifneq ($(LLVM),) !! 246 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 424 ifneq ($(filter %/,$(LLVM)),) !! 247 KBUILD_MODULES := 1 425 LLVM_PREFIX := $(LLVM) << 426 else ifneq ($(filter -%,$(LLVM)),) << 427 LLVM_SUFFIX := $(LLVM) << 428 endif 248 endif 429 249 430 HOSTCC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) !! 250 ifeq ($(MAKECMDGOALS),) 431 HOSTCXX = $(LLVM_PREFIX)clang++$(LLVM_SUFFIX) !! 251 KBUILD_MODULES := 1 >> 252 endif >> 253 >> 254 export KBUILD_MODULES KBUILD_BUILTIN >> 255 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD >> 256 >> 257 # Beautify output >> 258 # --------------------------------------------------------------------------- >> 259 # >> 260 # Normally, we echo the whole command before executing it. By making >> 261 # that echo $($(quiet)$(cmd)), we now have the possibility to set >> 262 # $(quiet) to choose other forms of output instead, e.g. >> 263 # >> 264 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ >> 265 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< >> 266 # >> 267 # If $(quiet) is empty, the whole command will be printed. >> 268 # If it is set to "quiet_", only the short version will be printed. >> 269 # If it is set to "silent_", nothing will be printed at all, since >> 270 # the variable $(silent_cmd_cc_o_c) doesn't exist. >> 271 # >> 272 # A simple variant is to prefix commands with $(Q) - that's useful >> 273 # for commands that shall be hidden in non-verbose mode. >> 274 # >> 275 # $(Q)ln $@ :< >> 276 # >> 277 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. >> 278 # If KBUILD_VERBOSE equals 1 then the above command is displayed. >> 279 >> 280 ifeq ($(KBUILD_VERBOSE),1) >> 281 quiet = >> 282 Q = 432 else 283 else 433 HOSTCC = gcc !! 284 quiet=quiet_ 434 HOSTCXX = g++ !! 285 Q = @ 435 endif 286 endif 436 HOSTRUSTC = rustc << 437 HOSTPKG_CONFIG = pkg-config << 438 287 439 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-proto !! 288 # If the user is running make -s (silent mode), suppress echoing of 440 -O2 -fomit-frame-poin !! 289 # commands 441 KBUILD_USERCFLAGS := $(KBUILD_USERHOSTCFLAGS) !! 290 442 KBUILD_USERLDFLAGS := $(USERLDFLAGS) !! 291 ifneq ($(findstring s,$(MAKEFLAGS)),) 443 !! 292 quiet=silent_ 444 # These flags apply to all Rust code in the tr !! 293 endif 445 # host programs. !! 294 446 export rust_common_flags := --edition=2021 \ !! 295 export quiet Q KBUILD_VERBOSE 447 -Zbinary_dep_depin !! 296 448 -Astable_features !! 297 449 -Dunsafe_op_in_uns !! 298 # Look for make include files relative to root of kernel src 450 -Dnon_ascii_idents !! 299 MAKEFLAGS += --include-dir=$(srctree) 451 -Wrust_2018_idioms !! 300 452 -Wunreachable_pub !! 301 # We need some generic definitions (do not try to remake the file). 453 -Wmissing_docs \ !! 302 $(srctree)/scripts/Kbuild.include: ; 454 -Wrustdoc::missing !! 303 include $(srctree)/scripts/Kbuild.include 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 << 470 304 471 # Make variables (CC, etc...) 305 # Make variables (CC, etc...) 472 CPP = $(CC) -E !! 306 473 ifneq ($(LLVM),) !! 307 AS = $(CROSS_COMPILE)as 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 308 LD = $(CROSS_COMPILE)ld >> 309 CC = $(CROSS_COMPILE)gcc >> 310 CPP = $(CC) -E 485 AR = $(CROSS_COMPILE)ar 311 AR = $(CROSS_COMPILE)ar 486 NM = $(CROSS_COMPILE)nm 312 NM = $(CROSS_COMPILE)nm >> 313 STRIP = $(CROSS_COMPILE)strip 487 OBJCOPY = $(CROSS_COMPILE)objcopy 314 OBJCOPY = $(CROSS_COMPILE)objcopy 488 OBJDUMP = $(CROSS_COMPILE)objdump 315 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 316 AWK = awk >> 317 GENKSYMS = scripts/genksyms/genksyms 502 INSTALLKERNEL := installkernel 318 INSTALLKERNEL := installkernel >> 319 DEPMOD = /sbin/depmod >> 320 KALLSYMS = scripts/kallsyms 503 PERL = perl 321 PERL = perl 504 PYTHON3 = python3 << 505 CHECK = sparse 322 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 << 514 323 515 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC 324 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 516 -Wbitwise -Wno-return-void - !! 325 -Wbitwise -Wno-return-void $(CF) 517 NOSTDINC_FLAGS := !! 326 MODFLAGS = -DMODULE 518 CFLAGS_MODULE = !! 327 CFLAGS_MODULE = $(MODFLAGS) 519 RUSTFLAGS_MODULE = !! 328 AFLAGS_MODULE = $(MODFLAGS) 520 AFLAGS_MODULE = !! 329 LDFLAGS_MODULE = -T $(srctree)/scripts/module-common.lds 521 LDFLAGS_MODULE = << 522 CFLAGS_KERNEL = 330 CFLAGS_KERNEL = 523 RUSTFLAGS_KERNEL = << 524 AFLAGS_KERNEL = 331 AFLAGS_KERNEL = 525 LDFLAGS_vmlinux = !! 332 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage 526 333 527 # Use USERINCLUDE when you must reference the << 528 USERINCLUDE := \ << 529 -I$(srctree)/arch/$(SRCARCH)/i << 530 -I$(objtree)/arch/$(SRCARCH)/i << 531 -I$(srctree)/include/uapi \ << 532 -I$(objtree)/include/generated << 533 -include $(srctree)/include/li << 534 -include $(srctree)/include/li << 535 334 536 # Use LINUXINCLUDE when you must reference the 335 # Use LINUXINCLUDE when you must reference the include/ directory. 537 # Needed to be compatible with the O= option 336 # Needed to be compatible with the O= option 538 LINUXINCLUDE := \ !! 337 LINUXINCLUDE := -Iinclude \ 539 -I$(srctree)/arch/$(SRCARCH)/i !! 338 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ 540 -I$(objtree)/arch/$(SRCARCH)/i !! 339 -I$(srctree)/arch/$(hdr-arch)/include \ 541 $(if $(building_out_of_srctree !! 340 -include include/linux/autoconf.h 542 -I$(objtree)/include \ << 543 $(USERINCLUDE) << 544 << 545 KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE << 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 << 554 341 555 KBUILD_CPPFLAGS := -D__KERNEL__ 342 KBUILD_CPPFLAGS := -D__KERNEL__ 556 KBUILD_RUSTFLAGS := $(rust_common_flags) \ << 557 -Cpanic=abort -Cembed-bitc << 558 -Cforce-unwind-tables=n -C << 559 -Csymbol-mangling-version= << 560 -Crelocation-model=static << 561 -Zfunction-sections=n \ << 562 -Wclippy::float_arithmetic << 563 << 564 KBUILD_AFLAGS_KERNEL := << 565 KBUILD_CFLAGS_KERNEL := << 566 KBUILD_RUSTFLAGS_KERNEL := << 567 KBUILD_AFLAGS_MODULE := -DMODULE << 568 KBUILD_CFLAGS_MODULE := -DMODULE << 569 KBUILD_RUSTFLAGS_MODULE := --cfg MODULE << 570 KBUILD_LDFLAGS_MODULE := << 571 KBUILD_LDFLAGS := << 572 CLANG_FLAGS := << 573 << 574 ifeq ($(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 << 581 343 582 ifdef RUST_LIB_SRC !! 344 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 583 export RUST_LIB_SRC !! 345 -fno-strict-aliasing -fno-common \ 584 endif !! 346 -Werror-implicit-function-declaration \ >> 347 -Wno-format-security \ >> 348 -fno-delete-null-pointer-checks >> 349 KBUILD_AFLAGS := -D__ASSEMBLY__ 585 350 586 # Allows the usage of unstable features in sta !! 351 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 587 export RUSTC_BOOTSTRAP := 1 !! 352 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) >> 353 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) 588 354 589 export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC K !! 355 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 590 export RUSTC RUSTDOC RUSTFMT RUSTC_OR_CLIPPY_Q !! 356 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 591 export HOSTRUSTC KBUILD_HOSTRUSTFLAGS !! 357 export CPP AR NM STRIP OBJCOPY OBJDUMP 592 export CPP AR NM STRIP OBJCOPY OBJDUMP READELF !! 358 export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE 593 export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_ !! 359 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 594 export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD << 595 export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS << 596 export KBUILD_USERCFLAGS KBUILD_USERLDFLAGS << 597 360 598 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINC !! 361 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 599 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODU !! 362 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV 600 export KBUILD_RUSTFLAGS RUSTFLAGS_KERNEL RUSTF << 601 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODU 363 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 602 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODU !! 364 603 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERN !! 365 # When compiling out-of-tree modules, put MODVERDIR in the module >> 366 # tree rather than in the kernel tree. The kernel tree might >> 367 # even be read-only. >> 368 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 604 369 605 # Files to ignore in find ... statements 370 # Files to ignore in find ... statements 606 371 607 export RCS_FIND_IGNORE := \( -name SCCS -o -na !! 372 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o 608 -name CVS -o -name . !! 373 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git 609 -prune -o << 610 374 611 # ============================================ 375 # =========================================================================== 612 # Rules shared between *config targets and bui 376 # Rules shared between *config targets and build targets 613 377 614 # Basic helpers built in scripts/basic/ !! 378 # Basic helpers built in scripts/ 615 PHONY += scripts_basic 379 PHONY += scripts_basic 616 scripts_basic: 380 scripts_basic: 617 $(Q)$(MAKE) $(build)=scripts/basic 381 $(Q)$(MAKE) $(build)=scripts/basic 618 382 >> 383 # To avoid any implicit rule to kick in, define an empty command. >> 384 scripts/basic/%: scripts_basic ; >> 385 619 PHONY += outputmakefile 386 PHONY += outputmakefile 620 ifdef building_out_of_srctree << 621 # Before starting out-of-tree build, make sure << 622 # outputmakefile generates a Makefile in the o 387 # outputmakefile generates a Makefile in the output directory, if using a 623 # separate output directory. This allows conve 388 # separate output directory. This allows convenient use of make in the 624 # output directory. 389 # output directory. 625 # At the same time when output Makefile genera << 626 # ignore whole output directory << 627 << 628 quiet_cmd_makefile = GEN Makefile << 629 cmd_makefile = { \ << 630 echo "\# Automatically generated by $( << 631 echo "include $(srctree)/Makefile"; \ << 632 } > Makefile << 633 << 634 outputmakefile: 390 outputmakefile: 635 @if [ -f $(srctree)/.config -o \ !! 391 ifneq ($(KBUILD_SRC),) 636 -d $(srctree)/include/config << 637 -d $(srctree)/arch/$(SRCARCH) << 638 echo >&2 "***"; \ << 639 echo >&2 "*** The source tree << 640 echo >&2 "*** in $(abs_srctree << 641 echo >&2 "***"; \ << 642 false; \ << 643 fi << 644 $(Q)ln -fsn $(srctree) source 392 $(Q)ln -fsn $(srctree) source 645 $(call cmd,makefile) !! 393 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 646 $(Q)test -e .gitignore || \ !! 394 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 647 { echo "# this is build directory, ign << 648 endif 395 endif 649 396 650 # The expansion should be delayed until arch/$ !! 397 # To make sure we do not include .config for any of the *config targets 651 # Some architectures define CROSS_COMPILE in a !! 398 # catch them early, and hand them over to scripts/kconfig/Makefile 652 # CC_VERSION_TEXT is referenced from Kconfig ( !! 399 # It is allowed to specify more targets when calling make, including 653 # and from include/config/auto.conf.cmd to det !! 400 # mixing *config targets and build targets. 654 CC_VERSION_TEXT = $(subst $(pound),,$(shell LC !! 401 # For example 'make oldconfig all'. >> 402 # Detect when mixed targets is specified, and make a second invocation >> 403 # of make so .config is not included in this case either (for *config). >> 404 >> 405 no-dot-config-targets := clean mrproper distclean \ >> 406 cscope TAGS tags help %docs check% \ >> 407 include/linux/version.h headers_% \ >> 408 kernelrelease kernelversion >> 409 >> 410 config-targets := 0 >> 411 mixed-targets := 0 >> 412 dot-config := 1 655 413 656 ifneq ($(findstring clang,$(CC_VERSION_TEXT)), !! 414 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 657 include $(srctree)/scripts/Makefile.clang !! 415 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) >> 416 dot-config := 0 >> 417 endif 658 endif 418 endif 659 419 660 # Include this also for config targets because !! 420 ifeq ($(KBUILD_EXTMOD),) 661 # cc-cross-prefix to determine CROSS_COMPILE. !! 421 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 662 ifdef need-compiler !! 422 config-targets := 1 663 include $(srctree)/scripts/Makefile.compiler !! 423 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) >> 424 mixed-targets := 1 >> 425 endif >> 426 endif 664 endif 427 endif 665 428 666 ifdef config-build !! 429 ifeq ($(mixed-targets),1) >> 430 # =========================================================================== >> 431 # We're called with mixed targets (*config and build targets). >> 432 # Handle them one by one. >> 433 >> 434 %:: FORCE >> 435 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ >> 436 >> 437 else >> 438 ifeq ($(config-targets),1) 667 # ============================================ 439 # =========================================================================== 668 # *config targets only - make sure prerequisit 440 # *config targets only - make sure prerequisites are updated, and descend 669 # in scripts/kconfig to make the *config targe 441 # in scripts/kconfig to make the *config target 670 442 671 # Read arch-specific Makefile to set KBUILD_DE !! 443 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 672 # KBUILD_DEFCONFIG may point out an alternativ 444 # KBUILD_DEFCONFIG may point out an alternative default configuration 673 # used for 'make defconfig' 445 # used for 'make defconfig' 674 include $(srctree)/arch/$(SRCARCH)/Makefile 446 include $(srctree)/arch/$(SRCARCH)/Makefile 675 export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERS !! 447 export KBUILD_DEFCONFIG KBUILD_KCONFIG 676 448 677 config: outputmakefile scripts_basic FORCE !! 449 config: scripts_basic outputmakefile FORCE >> 450 $(Q)mkdir -p include/linux include/config 678 $(Q)$(MAKE) $(build)=scripts/kconfig $ 451 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 679 452 680 %config: outputmakefile scripts_basic FORCE !! 453 %config: scripts_basic outputmakefile FORCE >> 454 $(Q)mkdir -p include/linux include/config 681 $(Q)$(MAKE) $(build)=scripts/kconfig $ 455 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 682 456 683 else #!config-build !! 457 else 684 # ============================================ 458 # =========================================================================== 685 # Build targets only - this includes vmlinux, !! 459 # Build targets only - this includes vmlinux, arch specific targets, clean 686 # targets and others. In general all targets e 460 # targets and others. In general all targets except *config targets. 687 461 688 # If building an external module we do not car << 689 # but instead __all depend on modules << 690 PHONY += all << 691 ifeq ($(KBUILD_EXTMOD),) 462 ifeq ($(KBUILD_EXTMOD),) 692 __all: all !! 463 # Additional helpers built in scripts/ 693 else !! 464 # Carefully list dependencies so we do not try to build scripts twice 694 __all: modules !! 465 # in parallel 695 endif !! 466 PHONY += scripts 696 !! 467 scripts: scripts_basic include/config/auto.conf 697 targets := !! 468 $(Q)$(MAKE) $(build)=$(@) 698 << 699 # Decide whether to build built-in, modular, o << 700 # Normally, just do built-in. << 701 << 702 KBUILD_MODULES := << 703 KBUILD_BUILTIN := 1 << 704 << 705 # If we have only "make modules", don't compil << 706 ifeq ($(MAKECMDGOALS),modules) << 707 KBUILD_BUILTIN := << 708 endif << 709 << 710 # If we have "make <whatever> modules", compil << 711 # in addition to whatever we do anyway. << 712 # Just "make" or "make all" shall build module << 713 << 714 ifneq ($(filter all modules nsdeps %compile_co << 715 KBUILD_MODULES := 1 << 716 endif << 717 << 718 ifeq ($(MAKECMDGOALS),) << 719 KBUILD_MODULES := 1 << 720 endif << 721 << 722 export KBUILD_MODULES KBUILD_BUILTIN << 723 << 724 ifdef need-config << 725 include include/config/auto.conf << 726 endif << 727 469 728 ifeq ($(KBUILD_EXTMOD),) << 729 # Objects we will link into vmlinux / subdirs 470 # Objects we will link into vmlinux / subdirs we need to visit 730 core-y := !! 471 init-y := init/ 731 drivers-y := !! 472 drivers-y := drivers/ sound/ firmware/ >> 473 net-y := net/ 732 libs-y := lib/ 474 libs-y := lib/ >> 475 core-y := usr/ 733 endif # KBUILD_EXTMOD 476 endif # KBUILD_EXTMOD 734 477 735 # The all: target is the default when no targe !! 478 ifeq ($(dot-config),1) 736 # command line. !! 479 # Read in config 737 # This allow a user to issue only 'make' to bu !! 480 -include include/config/auto.conf 738 # Defaults to vmlinux, but the arch makefile u << 739 all: vmlinux << 740 << 741 CFLAGS_GCOV := -fprofile-arcs -ftest-cover << 742 ifdef CONFIG_CC_IS_GCC << 743 CFLAGS_GCOV += -fno-tree-loop-im << 744 endif << 745 export CFLAGS_GCOV << 746 << 747 # The arch Makefiles can override CC_FLAGS_FTR << 748 ifdef CONFIG_FUNCTION_TRACER << 749 CC_FLAGS_FTRACE := -pg << 750 endif << 751 481 752 include $(srctree)/arch/$(SRCARCH)/Makefile !! 482 ifeq ($(KBUILD_EXTMOD),) 753 !! 483 # Read in dependencies to all Kconfig* files, make sure to run 754 ifdef need-config !! 484 # oldconfig if changes are detected. 755 ifdef may-sync-config !! 485 -include include/config/auto.conf.cmd 756 # Read in dependencies to all Kconfig* files, !! 486 757 # changes are detected. This should be include !! 487 # To avoid any implicit rule to kick in, define an empty command 758 # because some architectures define CROSS_COMP !! 488 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 759 include include/config/auto.conf.cmd !! 489 760 !! 490 # If .config is newer than include/config/auto.conf, someone tinkered 761 $(KCONFIG_CONFIG): !! 491 # with it and forgot to run make oldconfig. 762 @echo >&2 '***' !! 492 # if auto.conf.cmd is missing then we are probably in a cleaned tree so 763 @echo >&2 '*** Configuration file "$@" !! 493 # we execute the config step to be sure to catch updated Kconfig files 764 @echo >&2 '***' !! 494 include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 765 @echo >&2 '*** Please run some configu !! 495 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 766 @echo >&2 '*** "make menuconfig" or "m !! 496 else 767 @echo >&2 '***' !! 497 # external modules needs include/linux/autoconf.h and include/config/auto.conf 768 @/bin/false !! 498 # but do not care if they are up-to-date. Use auto.conf to trigger the test 769 << 770 # The actual configuration files used during t << 771 # include/generated/ and include/config/. Upda << 772 # include/config/auto.conf (which mirrors .con << 773 # << 774 # This exploits the 'multi-target pattern rule << 775 # The syncconfig should be executed only once << 776 # (Note: use the grouped target '&:' when we b << 777 # << 778 # Do not use $(call cmd,...) here. That would << 779 # so you cannot notice that Kconfig is waiting << 780 %/config/auto.conf %/config/auto.conf.cmd %/ge << 781 $(Q)$(kecho) " SYNC $@" << 782 $(Q)$(MAKE) -f $(srctree)/Makefile syn << 783 else # !may-sync-config << 784 # External modules and some install targets ne << 785 # and include/config/auto.conf but do not care << 786 # Use auto.conf to trigger the test << 787 PHONY += include/config/auto.conf 499 PHONY += include/config/auto.conf 788 500 789 include/config/auto.conf: 501 include/config/auto.conf: 790 @test -e include/generated/autoconf.h !! 502 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \ 791 echo >&2; !! 503 echo; \ 792 echo >&2 " ERROR: Kernel configuratio !! 504 echo " ERROR: Kernel configuration is invalid."; \ 793 echo >&2 " include/generated/a !! 505 echo " include/linux/autoconf.h or $@ are missing."; \ 794 echo >&2 " Run 'make oldconfig !! 506 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 795 echo >&2 ; !! 507 echo; \ 796 /bin/false) 508 /bin/false) 797 509 798 endif # may-sync-config !! 510 endif # KBUILD_EXTMOD 799 endif # need-config !! 511 >> 512 else >> 513 # Dummy target needed, because used as prerequisite >> 514 include/config/auto.conf: ; >> 515 endif # $(dot-config) 800 516 801 KBUILD_CFLAGS += -fno-delete-null-pointer-ch !! 517 # The all: target is the default when no target is given on the >> 518 # command line. >> 519 # This allow a user to issue only 'make' to build a kernel including modules >> 520 # Defaults vmlinux but it is usually overridden in the arch makefile >> 521 all: vmlinux 802 522 803 ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE !! 523 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 804 KBUILD_CFLAGS += -O2 !! 524 KBUILD_CFLAGS += -Os 805 KBUILD_RUSTFLAGS += -Copt-level=2 !! 525 else 806 else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE !! 526 KBUILD_CFLAGS += -O2 807 KBUILD_CFLAGS += -Os << 808 KBUILD_RUSTFLAGS += -Copt-level=s << 809 endif 527 endif 810 528 811 # Always set `debug-assertions` and `overflow- !! 529 include $(srctree)/arch/$(SRCARCH)/Makefile 812 # depends on `opt-level` and `debug-assertions << 813 KBUILD_RUSTFLAGS += -Cdebug-assertions=$(if $( << 814 KBUILD_RUSTFLAGS += -Coverflow-checks=$(if $(C << 815 530 816 # Tell gcc to never replace conditional load w !! 531 ifneq ($(CONFIG_FRAME_WARN),0) 817 ifdef CONFIG_CC_IS_GCC !! 532 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 818 # gcc-10 renamed --param=allow-store-data-race << 819 # -fno-allow-store-data-races. << 820 KBUILD_CFLAGS += $(call cc-option,--param=al << 821 KBUILD_CFLAGS += $(call cc-option,-fno-allow << 822 endif 533 endif 823 534 824 ifdef CONFIG_READABLE_ASM !! 535 # Force gcc to behave correct even for buggy distributions 825 # Disable optimizations that make assembler li !! 536 ifndef CONFIG_CC_STACKPROTECTOR 826 # reorder blocks reorders the control in the f !! 537 KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) 827 # ipa clone creates specialized cloned functio << 828 # partial inlining inlines only parts of funct << 829 KBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa- << 830 endif 538 endif 831 539 832 stackp-flags-y !! 540 # This warning generated too much noise in a regular build. 833 stackp-flags-$(CONFIG_STACKPROTECTOR) !! 541 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 834 stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) << 835 << 836 KBUILD_CFLAGS += $(stackp-flags-y) << 837 << 838 KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarning << 839 KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y) << 840 542 841 ifdef CONFIG_FRAME_POINTER 543 ifdef CONFIG_FRAME_POINTER 842 KBUILD_CFLAGS += -fno-omit-frame-pointer -fn 544 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 843 KBUILD_RUSTFLAGS += -Cforce-frame-pointers=y << 844 else 545 else 845 # Some targets (ARM with Thumb2, for example), << 846 # pointers. For those, we don't have FUNCTION << 847 # select FRAME_POINTER. However, FUNCTION_TRA << 848 # incompatible with -fomit-frame-pointer with << 849 # -fomit-frame-pointer with FUNCTION_TRACER. << 850 # In the Rust target specification, "frame-poi << 851 # to "may-omit". << 852 ifndef CONFIG_FUNCTION_TRACER << 853 KBUILD_CFLAGS += -fomit-frame-pointer 546 KBUILD_CFLAGS += -fomit-frame-pointer 854 endif 547 endif 855 endif << 856 548 857 # Initialize all stack variables with a 0xAA p !! 549 ifdef CONFIG_DEBUG_INFO 858 ifdef CONFIG_INIT_STACK_ALL_PATTERN !! 550 KBUILD_CFLAGS += -g 859 KBUILD_CFLAGS += -ftrivial-auto-var-init=pat !! 551 KBUILD_AFLAGS += -gdwarf-2 860 endif << 861 << 862 # Initialize all stack variables with a zero v << 863 ifdef CONFIG_INIT_STACK_ALL_ZERO << 864 KBUILD_CFLAGS += -ftrivial-auto-var-init=zer << 865 ifdef CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER << 866 # https://github.com/llvm/llvm-project/issues/ << 867 CC_AUTO_VAR_INIT_ZERO_ENABLER := -enable-trivi << 868 export CC_AUTO_VAR_INIT_ZERO_ENABLER << 869 KBUILD_CFLAGS += $(CC_AUTO_VAR_INIT_ZERO_ENA << 870 endif << 871 endif << 872 << 873 # While VLAs have been removed, GCC produces u << 874 # for the randomize_kstack_offset feature. Dis << 875 KBUILD_CFLAGS += $(call cc-option, -fno-stac << 876 << 877 # Clear used registers at func exit (to reduce << 878 ifdef CONFIG_ZERO_CALL_USED_REGS << 879 KBUILD_CFLAGS += -fzero-call-used-regs=used- << 880 endif 552 endif 881 553 882 ifdef CONFIG_FUNCTION_TRACER 554 ifdef CONFIG_FUNCTION_TRACER 883 ifdef CONFIG_FTRACE_MCOUNT_USE_CC !! 555 KBUILD_CFLAGS += -pg 884 CC_FLAGS_FTRACE += -mrecord-mcount << 885 ifdef CONFIG_HAVE_NOP_MCOUNT << 886 ifeq ($(call cc-option-yn, -mnop-mcount),y << 887 CC_FLAGS_FTRACE += -mnop-mcount << 888 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 889 endif << 890 endif << 891 endif << 892 ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL << 893 ifdef CONFIG_HAVE_OBJTOOL_NOP_MCOUNT << 894 CC_FLAGS_USING += -DCC_USING_NOP_MCOU << 895 endif << 896 endif << 897 ifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT << 898 ifdef CONFIG_HAVE_C_RECORDMCOUNT << 899 BUILD_C_RECORDMCOUNT := y << 900 export BUILD_C_RECORDMCOUNT << 901 endif << 902 endif << 903 ifdef CONFIG_HAVE_FENTRY << 904 # s390-linux-gnu-gcc did not support -mfentr << 905 ifeq ($(call cc-option-yn, -mfentry),y) << 906 CC_FLAGS_FTRACE += -mfentry << 907 CC_FLAGS_USING += -DCC_USING_FENTRY << 908 endif << 909 endif << 910 export CC_FLAGS_FTRACE << 911 KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLA << 912 KBUILD_AFLAGS += $(CC_FLAGS_USING) << 913 endif 556 endif 914 557 915 # We trigger additional mismatches with less i 558 # We trigger additional mismatches with less inlining 916 ifdef CONFIG_DEBUG_SECTION_MISMATCH 559 ifdef CONFIG_DEBUG_SECTION_MISMATCH 917 KBUILD_CFLAGS += -fno-inline-functions-called- !! 560 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 918 endif << 919 << 920 # `rustc`'s `-Zfunction-sections` applies to d << 921 ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION << 922 KBUILD_CFLAGS_KERNEL += -ffunction-sections -f << 923 KBUILD_RUSTFLAGS_KERNEL += -Zfunction-sections << 924 LDFLAGS_vmlinux += --gc-sections << 925 endif << 926 << 927 ifdef CONFIG_SHADOW_CALL_STACK << 928 ifndef CONFIG_DYNAMIC_SCS << 929 CC_FLAGS_SCS := -fsanitize=shadow-call-stac << 930 KBUILD_CFLAGS += $(CC_FLAGS_SCS) << 931 endif << 932 export CC_FLAGS_SCS << 933 endif << 934 << 935 ifdef CONFIG_LTO_CLANG << 936 ifdef CONFIG_LTO_CLANG_THIN << 937 CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit << 938 else << 939 CC_FLAGS_LTO := -flto << 940 endif << 941 CC_FLAGS_LTO += -fvisibility=hidden << 942 << 943 # Limit inlining across translation units to r << 944 KBUILD_LDFLAGS += -mllvm -import-instr-limit=5 << 945 endif << 946 << 947 ifdef CONFIG_LTO << 948 KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) << 949 KBUILD_AFLAGS += -fno-lto << 950 export CC_FLAGS_LTO << 951 endif << 952 << 953 ifdef CONFIG_CFI_CLANG << 954 CC_FLAGS_CFI := -fsanitize=kcfi << 955 KBUILD_CFLAGS += $(CC_FLAGS_CFI) << 956 export CC_FLAGS_CFI << 957 endif << 958 << 959 # Architectures can define flags to add/remove << 960 CC_FLAGS_FPU += -D_LINUX_FPU_COMPILATION_UN << 961 export CC_FLAGS_FPU << 962 export CC_FLAGS_NO_FPU << 963 << 964 ifneq ($(CONFIG_FUNCTION_ALIGNMENT),0) << 965 # Set the minimal function alignment. Use the << 966 # -fmin-function-alignment if it is available, << 967 # See also CONFIG_CC_HAS_SANE_FUNCTION_ALIGNME << 968 ifdef CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT << 969 KBUILD_CFLAGS += -fmin-function-alignment=$(CO << 970 else << 971 KBUILD_CFLAGS += -falign-functions=$(CONFIG_FU << 972 endif << 973 endif 561 endif 974 562 975 # arch Makefile may override CC so keep this a 563 # arch Makefile may override CC so keep this after arch Makefile is included 976 NOSTDINC_FLAGS += -nostdinc !! 564 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) >> 565 CHECKFLAGS += $(NOSTDINC_FLAGS) >> 566 >> 567 # warn about C99 declaration after statement >> 568 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 977 569 978 # To gain proper coverage for CONFIG_UBSAN_BOU !! 570 # disable pointer signed / unsigned warnings in gcc 4.0 979 # the kernel uses only C99 flexible arrays for !! 571 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 980 # arrays. Enforce this for everything that may << 981 # perform bounds checking. << 982 KBUILD_CFLAGS += $(call cc-option, -fstrict-fl << 983 << 984 #Currently, disable -Wstringop-overflow for GC << 985 KBUILD_CFLAGS-$(CONFIG_CC_NO_STRINGOP_OVERFLOW << 986 KBUILD_CFLAGS-$(CONFIG_CC_STRINGOP_OVERFLOW) + << 987 572 988 # disable invalid "can't wrap" optimizations f 573 # disable invalid "can't wrap" optimizations for signed / pointers 989 KBUILD_CFLAGS += -fno-strict-overflow !! 574 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 990 575 991 # Make sure -fstack-check isn't enabled (like !! 576 # revert to pre-gcc-4.4 behaviour of .eh_frame 992 KBUILD_CFLAGS += -fno-stack-check !! 577 KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) 993 578 994 # conserve stack if available 579 # conserve stack if available 995 ifdef CONFIG_CC_IS_GCC !! 580 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 996 KBUILD_CFLAGS += -fconserve-stack << 997 endif << 998 << 999 # change __FILE__ to the relative path from th << 1000 KBUILD_CPPFLAGS += $(call cc-option,-fmacro-p << 1001 581 1002 # include additional Makefiles when needed !! 582 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 1003 include-y := scripts/Ma !! 583 # But warn user when we do so 1004 include-$(CONFIG_DEBUG_INFO) += scripts/Ma !! 584 warn-assign = \ 1005 include-$(CONFIG_DEBUG_INFO_BTF)+= scripts/Ma !! 585 $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") 1006 include-$(CONFIG_KASAN) += scripts/Ma !! 586 1007 include-$(CONFIG_KCSAN) += scripts/Ma !! 587 ifneq ($(KCPPFLAGS),) 1008 include-$(CONFIG_KMSAN) += scripts/Ma !! 588 $(call warn-assign,CPPFLAGS) 1009 include-$(CONFIG_UBSAN) += scripts/Ma !! 589 KBUILD_CPPFLAGS += $(KCPPFLAGS) 1010 include-$(CONFIG_KCOV) += scripts/Ma !! 590 endif 1011 include-$(CONFIG_RANDSTRUCT) += scripts/Ma !! 591 ifneq ($(KAFLAGS),) 1012 include-$(CONFIG_GCC_PLUGINS) += scripts/Ma !! 592 $(call warn-assign,AFLAGS) 1013 !! 593 KBUILD_AFLAGS += $(KAFLAGS) 1014 include $(addprefix $(srctree)/, $(include-y) !! 594 endif 1015 !! 595 ifneq ($(KCFLAGS),) 1016 # scripts/Makefile.gcc-plugins is intentional !! 596 $(call warn-assign,CFLAGS) 1017 # Do not add $(call cc-option,...) below this !! 597 KBUILD_CFLAGS += $(KCFLAGS) 1018 # from the clean source tree, the GCC plugins !! 598 endif 1019 !! 599 1020 # Add user supplied CPPFLAGS, AFLAGS, CFLAGS !! 600 # Use --build-id when available. 1021 KBUILD_CPPFLAGS += $(KCPPFLAGS) !! 601 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 1022 KBUILD_AFLAGS += $(KAFLAGS) !! 602 $(call cc-ldoption, -Wl$(comma)--build-id,)) 1023 KBUILD_CFLAGS += $(KCFLAGS) !! 603 LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 1024 KBUILD_RUSTFLAGS += $(KRUSTFLAGS) !! 604 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 1025 << 1026 KBUILD_LDFLAGS_MODULE += --build-id=sha1 << 1027 LDFLAGS_vmlinux += --build-id=sha1 << 1028 << 1029 KBUILD_LDFLAGS += -z noexecstack << 1030 ifeq ($(CONFIG_LD_IS_BFD),y) << 1031 KBUILD_LDFLAGS += $(call ld-option,--no-warn << 1032 endif << 1033 605 1034 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 606 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1035 LDFLAGS_vmlinux += -X !! 607 LDFLAGS_vmlinux += $(call ld-option, -X,) 1036 endif << 1037 << 1038 ifeq ($(CONFIG_RELR),y) << 1039 # ld.lld before 15 did not support -z pack-re << 1040 LDFLAGS_vmlinux += $(call ld-option,--pack-dy << 1041 endif << 1042 << 1043 # We never want expected sections to be place << 1044 # linker. All sections should be explicitly n << 1045 ifdef CONFIG_LD_ORPHAN_WARN << 1046 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG << 1047 endif 608 endif 1048 609 1049 # Align the bit size of userspace programs wi << 1050 KBUILD_USERCFLAGS += $(filter -m32 -m64 --ta << 1051 KBUILD_USERLDFLAGS += $(filter -m32 -m64 --ta << 1052 << 1053 # make the checker run with the right archite << 1054 CHECKFLAGS += --arch=$(ARCH) << 1055 << 1056 # insure the checker run with the right endia << 1057 CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),- << 1058 << 1059 # the checker needs the correct machine size << 1060 CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) << 1061 << 1062 # Default kernel image to build when no speci 610 # Default kernel image to build when no specific target is given. 1063 # KBUILD_IMAGE may be overruled on the comman 611 # KBUILD_IMAGE may be overruled on the command line or 1064 # set in the environment 612 # set in the environment 1065 # Also any assignments in arch/$(ARCH)/Makefi 613 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 1066 # this default value 614 # this default value 1067 export KBUILD_IMAGE ?= vmlinux 615 export KBUILD_IMAGE ?= vmlinux 1068 616 1069 # 617 # 1070 # INSTALL_PATH specifies where to place the u 618 # INSTALL_PATH specifies where to place the updated kernel and system map 1071 # images. Default is /boot, but you can set i 619 # images. Default is /boot, but you can set it to other values 1072 export INSTALL_PATH ?= /boot 620 export INSTALL_PATH ?= /boot 1073 621 1074 # 622 # 1075 # INSTALL_DTBS_PATH specifies a prefix for re << 1076 # Like INSTALL_MOD_PATH, it isn't defined in << 1077 # an argument if needed. Otherwise it default << 1078 # << 1079 export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/d << 1080 << 1081 # << 1082 # INSTALL_MOD_PATH specifies a prefix to MODL 623 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1083 # relocations required by build roots. This 624 # relocations required by build roots. This is not defined in the 1084 # makefile but the argument can be passed to 625 # makefile but the argument can be passed to make if needed. 1085 # 626 # 1086 627 1087 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(K 628 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1088 export MODLIB 629 export MODLIB 1089 630 1090 PHONY += prepare0 !! 631 # >> 632 # INSTALL_MOD_STRIP, if defined, will cause modules to be >> 633 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then >> 634 # the default option --strip-debug will be used. Otherwise, >> 635 # INSTALL_MOD_STRIP will used as the options to the strip command. >> 636 >> 637 ifdef INSTALL_MOD_STRIP >> 638 ifeq ($(INSTALL_MOD_STRIP),1) >> 639 mod_strip_cmd = $(STRIP) --strip-debug >> 640 else >> 641 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) >> 642 endif # INSTALL_MOD_STRIP=1 >> 643 else >> 644 mod_strip_cmd = true >> 645 endif # INSTALL_MOD_STRIP >> 646 export mod_strip_cmd 1091 647 1092 export extmod_prefix = $(if $(KBUILD_EXTMOD), << 1093 export MODORDER := $(extmod_prefix)modules.or << 1094 export MODULES_NSDEPS := $(extmod_prefix)modu << 1095 648 1096 ifeq ($(KBUILD_EXTMOD),) 649 ifeq ($(KBUILD_EXTMOD),) >> 650 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 1097 651 1098 build-dir := . !! 652 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 1099 clean-dirs := $(sort . Documentation \ !! 653 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 1100 $(patsubst %/,%,$(filter !! 654 $(net-y) $(net-m) $(libs-y) $(libs-m))) 1101 $(drivers-) $(libs-)) !! 655 1102 !! 656 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 1103 export ARCH_CORE := $(core-y) !! 657 $(init-n) $(init-) \ 1104 export ARCH_LIB := $(filter %/, $(lib !! 658 $(core-n) $(core-) $(drivers-n) $(drivers-) \ 1105 export ARCH_DRIVERS := $(drivers-y) $(dri !! 659 $(net-n) $(net-) $(libs-n) $(libs-)))) 1106 # Externally visible symbols (used by link-vm !! 660 >> 661 init-y := $(patsubst %/, %/built-in.o, $(init-y)) >> 662 core-y := $(patsubst %/, %/built-in.o, $(core-y)) >> 663 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) >> 664 net-y := $(patsubst %/, %/built-in.o, $(net-y)) >> 665 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) >> 666 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) >> 667 libs-y := $(libs-y1) $(libs-y2) >> 668 >> 669 # Build vmlinux >> 670 # --------------------------------------------------------------------------- >> 671 # vmlinux is built from the objects selected by $(vmlinux-init) and >> 672 # $(vmlinux-main). Most are built-in.o files from top-level directories >> 673 # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. >> 674 # Ordering when linking is important, and $(vmlinux-init) must be first. >> 675 # >> 676 # vmlinux >> 677 # ^ >> 678 # | >> 679 # +-< $(vmlinux-init) >> 680 # | +--< init/version.o + more >> 681 # | >> 682 # +--< $(vmlinux-main) >> 683 # | +--< driver/built-in.o mm/built-in.o + more >> 684 # | >> 685 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) >> 686 # >> 687 # vmlinux version (uname -v) cannot be updated during normal >> 688 # descending-into-subdirs phase since we do not yet know if we need to >> 689 # update vmlinux. >> 690 # Therefore this step is delayed until just before final link of vmlinux - >> 691 # except in the kallsyms case where it is done just before adding the >> 692 # symbols to the kernel. >> 693 # >> 694 # System.map is generated to document addresses of all kernel symbols >> 695 >> 696 vmlinux-init := $(head-y) $(init-y) >> 697 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) >> 698 vmlinux-all := $(vmlinux-init) $(vmlinux-main) >> 699 vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds >> 700 export KBUILD_VMLINUX_OBJS := $(vmlinux-all) >> 701 >> 702 # Rule to link vmlinux - also used during CONFIG_KALLSYMS >> 703 # May be overridden by arch/$(ARCH)/Makefile >> 704 quiet_cmd_vmlinux__ ?= LD $@ >> 705 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ >> 706 -T $(vmlinux-lds) $(vmlinux-init) \ >> 707 --start-group $(vmlinux-main) --end-group \ >> 708 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) >> 709 >> 710 # Generate new vmlinux version >> 711 quiet_cmd_vmlinux_version = GEN .version >> 712 cmd_vmlinux_version = set -e; \ >> 713 if [ ! -r .version ]; then \ >> 714 rm -f .version; \ >> 715 echo 1 >.version; \ >> 716 else \ >> 717 mv .version .old_version; \ >> 718 expr 0$$(cat .old_version) + 1 >.version; \ >> 719 fi; \ >> 720 $(MAKE) $(build)=init >> 721 >> 722 # Generate System.map >> 723 quiet_cmd_sysmap = SYSMAP >> 724 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap >> 725 >> 726 # Link of vmlinux >> 727 # If CONFIG_KALLSYMS is set .version is already updated >> 728 # Generate System.map and verify that the content is consistent >> 729 # Use + in front of the vmlinux_version rule to silent warning with make -j2 >> 730 # First command is ':' to allow us to use + in front of the rule >> 731 define rule_vmlinux__ >> 732 : >> 733 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) >> 734 >> 735 $(call cmd,vmlinux__) >> 736 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd >> 737 >> 738 $(Q)$(if $($(quiet)cmd_sysmap), \ >> 739 echo ' $($(quiet)cmd_sysmap) System.map' &&) \ >> 740 $(cmd_sysmap) $@ System.map; \ >> 741 if [ $$? -ne 0 ]; then \ >> 742 rm -f $@; \ >> 743 /bin/false; \ >> 744 fi; >> 745 $(verify_kallsyms) >> 746 endef 1107 747 1108 KBUILD_VMLINUX_OBJS := ./built-in.a !! 748 1109 ifdef CONFIG_MODULES !! 749 ifdef CONFIG_KALLSYMS 1110 KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a !! 750 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) 1111 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(lib !! 751 # It's a three stage process: >> 752 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is >> 753 # empty >> 754 # Running kallsyms on that gives us .tmp_kallsyms1.o with >> 755 # the right size - vmlinux version (uname -v) is updated during this step >> 756 # o .tmp_vmlinux2 now has a __kallsyms section of the right size, >> 757 # but due to the added section, some addresses have shifted. >> 758 # From here, we generate a correct .tmp_kallsyms2.o >> 759 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. >> 760 # o Verify that the System.map from vmlinux matches the map from >> 761 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. >> 762 # o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using >> 763 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a >> 764 # temporary bypass to allow the kernel to be built while the >> 765 # maintainers work out what went wrong with kallsyms. >> 766 >> 767 ifdef CONFIG_KALLSYMS_EXTRA_PASS >> 768 last_kallsyms := 3 1112 else 769 else 1113 KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, !! 770 last_kallsyms := 2 1114 endif 771 endif 1115 772 1116 export KBUILD_VMLINUX_LIBS !! 773 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o 1117 export KBUILD_LDS := arch/$(SRCARCH) << 1118 774 1119 ifdef CONFIG_TRIM_UNUSED_KSYMS !! 775 define verify_kallsyms 1120 # For the kernel to actually contain only the !! 776 $(Q)$(if $($(quiet)cmd_sysmap), \ 1121 # we have to build modules as well to determi !! 777 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ 1122 KBUILD_MODULES := 1 !! 778 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map >> 779 $(Q)cmp -s System.map .tmp_System.map || \ >> 780 (echo Inconsistent kallsyms data; \ >> 781 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ >> 782 rm .tmp_kallsyms* ; /bin/false ) >> 783 endef >> 784 >> 785 # Update vmlinux version before link >> 786 # Use + in front of this rule to silent warning about make -j1 >> 787 # First command is ':' to allow us to use + in front of this rule >> 788 cmd_ksym_ld = $(cmd_vmlinux__) >> 789 define rule_ksym_ld >> 790 : >> 791 +$(call cmd,vmlinux_version) >> 792 $(call cmd,vmlinux__) >> 793 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd >> 794 endef >> 795 >> 796 # Generate .S file with all kernel symbols >> 797 quiet_cmd_kallsyms = KSYM $@ >> 798 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ >> 799 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ >> 800 >> 801 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE >> 802 $(call if_changed_dep,as_o_S) >> 803 >> 804 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) >> 805 $(call cmd,kallsyms) >> 806 >> 807 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version >> 808 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE >> 809 $(call if_changed_rule,ksym_ld) >> 810 >> 811 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE >> 812 $(call if_changed,vmlinux__) >> 813 >> 814 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE >> 815 $(call if_changed,vmlinux__) >> 816 >> 817 # Needs to visit scripts/ before $(KALLSYMS) can be used. >> 818 $(KALLSYMS): scripts ; >> 819 >> 820 # Generate some data for debugging strange kallsyms problems >> 821 debug_kallsyms: .tmp_map$(last_kallsyms) >> 822 >> 823 .tmp_map%: .tmp_vmlinux% FORCE >> 824 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ >> 825 >> 826 .tmp_map3: .tmp_map2 >> 827 >> 828 .tmp_map2: .tmp_map1 >> 829 >> 830 endif # ifdef CONFIG_KALLSYMS >> 831 >> 832 # Do modpost on a prelinked vmlinux. The finally linked vmlinux has >> 833 # relevant sections renamed as per the linker script. >> 834 quiet_cmd_vmlinux-modpost = LD $@ >> 835 cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ >> 836 $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ >> 837 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) >> 838 define rule_vmlinux-modpost >> 839 : >> 840 +$(call cmd,vmlinux-modpost) >> 841 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ >> 842 $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd >> 843 endef >> 844 >> 845 # vmlinux image - including updated kernel symbols >> 846 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE >> 847 ifdef CONFIG_HEADERS_CHECK >> 848 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check >> 849 endif >> 850 ifdef CONFIG_SAMPLES >> 851 $(Q)$(MAKE) $(build)=samples >> 852 endif >> 853 ifdef CONFIG_BUILD_DOCSRC >> 854 $(Q)$(MAKE) $(build)=Documentation >> 855 endif >> 856 $(call vmlinux-modpost) >> 857 $(call if_changed_rule,vmlinux__) >> 858 $(Q)rm -f .old_version >> 859 >> 860 # build vmlinux.o first to catch section mismatch errors early >> 861 ifdef CONFIG_KALLSYMS >> 862 .tmp_vmlinux1: vmlinux.o 1123 endif 863 endif 1124 864 1125 # '$(AR) mPi' needs 'T' to workaround the bug !! 865 modpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) 1126 quiet_cmd_ar_vmlinux.a = AR $@ !! 866 vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE 1127 cmd_ar_vmlinux.a = \ !! 867 $(call if_changed_rule,vmlinux-modpost) 1128 rm -f $@; \ << 1129 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS << 1130 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) << 1131 << 1132 targets += vmlinux.a << 1133 vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/hea << 1134 $(call if_changed,ar_vmlinux.a) << 1135 << 1136 PHONY += vmlinux_o << 1137 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS) << 1138 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1139 << 1140 vmlinux.o modules.builtin.modinfo modules.bui << 1141 @: << 1142 << 1143 PHONY += vmlinux << 1144 # LDFLAGS_vmlinux in the top Makefile defines << 1145 # not for decompressors. LDFLAGS_vmlinux in a << 1146 # unrelated; the decompressors just happen to << 1147 # arch/*/boot/compressed/vmlinux. << 1148 # Export LDFLAGS_vmlinux only to scripts/Make << 1149 # << 1150 # _LDFLAGS_vmlinux is a workaround for the 'p << 1151 # https://savannah.gnu.org/bugs/?61463 << 1152 # For Make > 4.4, the following simple code w << 1153 # vmlinux: private export LDFLAGS_vmlinux := << 1154 vmlinux: private _LDFLAGS_vmlinux := $(LDFLAG << 1155 vmlinux: export LDFLAGS_vmlinux = $(_LDFLAGS_ << 1156 vmlinux: vmlinux.o $(KBUILD_LDS) modpost << 1157 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1158 868 1159 # The actual objects are generated when desce !! 869 # The actual objects are generated when descending, 1160 # make sure no implicit rule kicks in 870 # make sure no implicit rule kicks in 1161 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $ !! 871 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; 1162 872 1163 ifeq ($(origin KERNELRELEASE),file) !! 873 # Handle descending into subdirectories listed in $(vmlinux-dirs) 1164 filechk_kernel.release = $(srctree)/scripts/s !! 874 # Preset locale variables to speed up the build process. Limit locale >> 875 # tweaks to this spot to avoid wrong language settings when running >> 876 # make menuconfig etc. >> 877 # Error messages still appears in the original language >> 878 >> 879 PHONY += $(vmlinux-dirs) >> 880 $(vmlinux-dirs): prepare scripts >> 881 $(Q)$(MAKE) $(build)=$@ >> 882 >> 883 # Build the kernel release string >> 884 # >> 885 # The KERNELRELEASE value built here is stored in the file >> 886 # include/config/kernel.release, and is used when executing several >> 887 # make targets, such as "make install" or "make modules_install." >> 888 # >> 889 # The eventual kernel release string consists of the following fields, >> 890 # shown in a hierarchical format to show how smaller parts are concatenated >> 891 # to form the larger and final value, with values coming from places like >> 892 # the Makefile, kernel config options, make command line options and/or >> 893 # SCM tag information. >> 894 # >> 895 # $(KERNELVERSION) >> 896 # $(VERSION) eg, 2 >> 897 # $(PATCHLEVEL) eg, 6 >> 898 # $(SUBLEVEL) eg, 18 >> 899 # $(EXTRAVERSION) eg, -rc6 >> 900 # $(localver-full) >> 901 # $(localver) >> 902 # localversion* (files without backups, containing '~') >> 903 # $(CONFIG_LOCALVERSION) (from kernel config setting) >> 904 # $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set) >> 905 # ./scripts/setlocalversion (SCM tag, if one exists) >> 906 # $(LOCALVERSION) (from make command line if provided) >> 907 # >> 908 # Note how the final $(localver-auto) string is included *only* if the >> 909 # kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the >> 910 # moment, only git is supported but other SCMs can edit the script >> 911 # scripts/setlocalversion and add the appropriate checks as needed. >> 912 >> 913 pattern = ".*/localversion[^~]*" >> 914 string = $(shell cat /dev/null \ >> 915 `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort -u`) >> 916 >> 917 localver = $(subst $(space),, $(string) \ >> 918 $(patsubst "%",%,$(CONFIG_LOCALVERSION))) >> 919 >> 920 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called >> 921 # and if the SCM is know a tag from the SCM is appended. >> 922 # The appended tag is determined by the SCM used. >> 923 # >> 924 # .scmversion is used when generating rpm packages so we do not loose >> 925 # the version information from the SCM when we do the build of the kernel >> 926 # from the copied source >> 927 ifdef CONFIG_LOCALVERSION_AUTO >> 928 >> 929 ifeq ($(wildcard .scmversion),) >> 930 _localver-auto = $(shell $(CONFIG_SHELL) \ >> 931 $(srctree)/scripts/setlocalversion $(srctree)) 1165 else 932 else 1166 filechk_kernel.release = echo $(KERNELRELEASE !! 933 _localver-auto = $(shell cat .scmversion 2> /dev/null) 1167 endif 934 endif 1168 935 1169 # Store (new) KERNELRELEASE string in include !! 936 localver-auto = $(LOCALVERSION)$(_localver-auto) 1170 include/config/kernel.release: FORCE !! 937 endif 1171 $(call filechk,kernel.release) !! 938 >> 939 localver-full = $(localver)$(localver-auto) >> 940 >> 941 # Store (new) KERNELRELASE string in include/config/kernel.release >> 942 kernelrelease = $(KERNELVERSION)$(localver-full) >> 943 include/config/kernel.release: include/config/auto.conf FORCE >> 944 $(Q)rm -f $@ >> 945 $(Q)echo $(kernelrelease) > $@ 1172 946 1173 # Additional helpers built in scripts/ << 1174 # Carefully list dependencies so we do not tr << 1175 # in parallel << 1176 PHONY += scripts << 1177 scripts: scripts_basic scripts_dtc << 1178 $(Q)$(MAKE) $(build)=$(@) << 1179 947 1180 # Things we need to do before we recursively 948 # Things we need to do before we recursively start building the kernel 1181 # or the modules are listed in "prepare". 949 # or the modules are listed in "prepare". 1182 # A multi level approach is used. prepareN is 950 # A multi level approach is used. prepareN is processed before prepareN-1. 1183 # archprepare is used in arch Makefiles and w 951 # archprepare is used in arch Makefiles and when processed asm symlink, 1184 # version.h and scripts_basic is processed / 952 # version.h and scripts_basic is processed / created. 1185 953 1186 PHONY += prepare archprepare !! 954 # Listed in dependency order >> 955 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 >> 956 >> 957 # prepare3 is used to check if we are building in a separate output directory, >> 958 # and if so do: >> 959 # 1) Check that make has not been executed in the kernel src $(srctree) >> 960 # 2) Create the include2 directory, used for the second asm symlink >> 961 prepare3: include/config/kernel.release >> 962 ifneq ($(KBUILD_SRC),) >> 963 @$(kecho) ' Using $(srctree) as source for kernel' >> 964 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ >> 965 echo " $(srctree) is not clean, please run 'make mrproper'";\ >> 966 echo " in the '$(srctree)' directory.";\ >> 967 /bin/false; \ >> 968 fi; >> 969 $(Q)if [ ! -d include2 ]; then \ >> 970 mkdir -p include2; \ >> 971 ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm; \ >> 972 fi >> 973 endif >> 974 >> 975 # prepare2 creates a makefile if using a separate output directory >> 976 prepare2: prepare3 outputmakefile 1187 977 1188 archprepare: outputmakefile archheaders archs !! 978 prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \ 1189 asm-generic $(version_h) include/gene !! 979 include/asm include/config/auto.conf 1190 include/generated/compile.h include/g !! 980 $(cmd_crmodverdir) 1191 !! 981 1192 prepare0: archprepare !! 982 archprepare: prepare1 scripts_basic 1193 $(Q)$(MAKE) $(build)=scripts/mod !! 983 1194 $(Q)$(MAKE) $(build)=. prepare !! 984 prepare0: archprepare FORCE >> 985 $(Q)$(MAKE) $(build)=. >> 986 $(Q)$(MAKE) $(build)=. missing-syscalls 1195 987 1196 # All the preparing.. 988 # All the preparing.. 1197 prepare: prepare0 989 prepare: prepare0 1198 ifdef CONFIG_RUST !! 990 1199 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip !! 991 # The asm symlink changes when $(ARCH) changes. 1200 $(Q)$(MAKE) $(build)=rust !! 992 # Detect this and ask user to run make mrproper 1201 endif !! 993 # If asm is a stale symlink (point to dir that does not exist) remove it 1202 !! 994 define check-symlink 1203 PHONY += remove-stale-files !! 995 set -e; \ 1204 remove-stale-files: !! 996 if [ -L include/asm ]; then \ 1205 $(Q)$(srctree)/scripts/remove-stale-f !! 997 asmlink=`readlink include/asm | cut -d '-' -f 2`; \ 1206 !! 998 if [ "$$asmlink" != "$(SRCARCH)" ]; then \ 1207 # Support for using generic headers in asm-ge !! 999 echo "ERROR: the symlink $@ points to asm-$$asmlink but asm-$(SRCARCH) was expected"; \ 1208 asm-generic := -f $(srctree)/scripts/Makefile !! 1000 echo " set ARCH or save .config and run 'make mrproper' to fix it"; \ 1209 !! 1001 exit 1; \ 1210 PHONY += asm-generic uapi-asm-generic !! 1002 fi; \ 1211 asm-generic: uapi-asm-generic !! 1003 test -e $$asmlink || rm include/asm; \ 1212 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC !! 1004 elif [ -d include/asm ]; then \ 1213 generic=include/asm-generic !! 1005 echo "ERROR: $@ is a directory but a symlink was expected";\ 1214 uapi-asm-generic: !! 1006 exit 1; \ 1215 $(Q)$(MAKE) $(asm-generic)=arch/$(SRC !! 1007 fi 1216 generic=include/uapi/asm-generic !! 1008 endef >> 1009 >> 1010 # We create the target directory of the symlink if it does >> 1011 # not exist so the test in check-symlink works and we have a >> 1012 # directory for generated filesas used by some architectures. >> 1013 define create-symlink >> 1014 if [ ! -L include/asm ]; then \ >> 1015 $(kecho) ' SYMLINK $@ -> include/asm-$(SRCARCH)'; \ >> 1016 if [ ! -d include/asm-$(SRCARCH) ]; then \ >> 1017 mkdir -p include/asm-$(SRCARCH); \ >> 1018 fi; \ >> 1019 ln -fsn asm-$(SRCARCH) $@; \ >> 1020 fi >> 1021 endef >> 1022 >> 1023 include/asm: FORCE >> 1024 $(Q)$(check-symlink) >> 1025 $(Q)$(create-symlink) 1217 1026 1218 # Generate some files 1027 # Generate some files 1219 # ------------------------------------------- 1028 # --------------------------------------------------------------------------- 1220 1029 1221 # KERNELRELEASE can change from a few differe 1030 # KERNELRELEASE can change from a few different places, meaning version.h 1222 # needs to be updated, so this check is force 1031 # needs to be updated, so this check is forced on all builds 1223 1032 1224 uts_len := 64 1033 uts_len := 64 1225 define filechk_utsrelease.h 1034 define filechk_utsrelease.h 1226 if [ `echo -n "$(KERNELRELEASE)" | wc 1035 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1227 echo '"$(KERNELRELEASE)" exceeds $( 1036 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1228 exit 1; 1037 exit 1; \ 1229 fi; 1038 fi; \ 1230 echo \#define UTS_RELEASE \"$(KERNELR !! 1039 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1231 endef 1040 endef 1232 1041 1233 define filechk_version.h 1042 define filechk_version.h 1234 if [ $(SUBLEVEL) -gt 255 ]; then !! 1043 (echo \#define LINUX_VERSION_CODE $(shell \ 1235 echo \#define LINUX_VERSION_C !! 1044 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 1236 expr $(VERSION) \* 65536 + $( !! 1045 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1237 else << 1238 echo \#define LINUX_VERSION_C << 1239 expr $(VERSION) \* 65536 + $( << 1240 fi; << 1241 echo '#define KERNEL_VERSION(a,b,c) ( << 1242 ((c) > 255 ? 255 : (c)))'; << 1243 echo \#define LINUX_VERSION_MAJOR $(V << 1244 echo \#define LINUX_VERSION_PATCHLEVE << 1245 echo \#define LINUX_VERSION_SUBLEVEL << 1246 endef 1046 endef 1247 1047 1248 $(version_h): private PATCHLEVEL := $(or $(PA !! 1048 include/linux/version.h: $(srctree)/Makefile FORCE 1249 $(version_h): private SUBLEVEL := $(or $(SUBL << 1250 $(version_h): FORCE << 1251 $(call filechk,version.h) 1049 $(call filechk,version.h) 1252 1050 1253 include/generated/utsrelease.h: include/confi !! 1051 include/linux/utsrelease.h: include/config/kernel.release FORCE 1254 $(call filechk,utsrelease.h) 1052 $(call filechk,utsrelease.h) 1255 1053 1256 filechk_compile.h = $(srctree)/scripts/mkcomp << 1257 "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION << 1258 << 1259 include/generated/compile.h: FORCE << 1260 $(call filechk,compile.h) << 1261 << 1262 PHONY += headerdep 1054 PHONY += headerdep 1263 headerdep: 1055 headerdep: 1264 $(Q)find $(srctree)/include/ -name '* !! 1056 $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl 1265 $(srctree)/scripts/headerdep.pl -I$(s << 1266 1057 1267 # ------------------------------------------- 1058 # --------------------------------------------------------------------------- 1268 # Kernel headers << 1269 1059 1270 #Default location for installed headers !! 1060 PHONY += depend dep 1271 export INSTALL_HDR_PATH = $(objtree)/usr !! 1061 depend dep: 1272 !! 1062 @echo '*** Warning: make $@ is unnecessary now.' 1273 quiet_cmd_headers_install = INSTALL $(INSTALL << 1274 cmd_headers_install = \ << 1275 mkdir -p $(INSTALL_HDR_PATH); \ << 1276 rsync -mrl --include='*/' --include=' << 1277 usr/include $(INSTALL_HDR_PATH) << 1278 << 1279 PHONY += headers_install << 1280 headers_install: headers << 1281 $(call cmd,headers_install) << 1282 << 1283 PHONY += archheaders archscripts << 1284 << 1285 hdr-inst := -f $(srctree)/scripts/Makefile.he << 1286 << 1287 PHONY += headers << 1288 headers: $(version_h) scripts_unifdef uapi-as << 1289 $(if $(filter um, $(SRCARCH)), $(erro << 1290 $(Q)$(MAKE) $(hdr-inst)=include/uapi << 1291 $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARC << 1292 << 1293 ifdef CONFIG_HEADERS_INSTALL << 1294 prepare: headers << 1295 endif << 1296 << 1297 PHONY += scripts_unifdef << 1298 scripts_unifdef: scripts_basic << 1299 $(Q)$(MAKE) $(build)=scripts scripts/ << 1300 << 1301 # ------------------------------------------- << 1302 # Install << 1303 << 1304 # Many distributions have the custom install << 1305 # If DKMS is installed, 'make install' will e << 1306 # to this Makefile to build and install exter << 1307 # Cancel sub_make_done so that options such a << 1308 << 1309 quiet_cmd_install = INSTALL $(INSTALL_PATH) << 1310 cmd_install = unset sub_make_done; $(sr << 1311 << 1312 # ------------------------------------------- << 1313 # vDSO install << 1314 << 1315 PHONY += vdso_install << 1316 vdso_install: export INSTALL_FILES = $(vdso-i << 1317 vdso_install: << 1318 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1319 1063 1320 # ------------------------------------------- 1064 # --------------------------------------------------------------------------- 1321 # Tools !! 1065 # Firmware install >> 1066 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware >> 1067 export INSTALL_FW_PATH 1322 1068 1323 ifdef CONFIG_OBJTOOL !! 1069 PHONY += firmware_install 1324 prepare: tools/objtool !! 1070 firmware_install: FORCE 1325 endif !! 1071 @mkdir -p $(objtree)/firmware 1326 !! 1072 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 1327 ifdef CONFIG_BPF << 1328 ifdef CONFIG_DEBUG_INFO_BTF << 1329 prepare: tools/bpf/resolve_btfids << 1330 endif << 1331 endif << 1332 << 1333 # The tools build system is not a part of Kbu << 1334 # its own unique issues. If you need to integ << 1335 # please consider locating that tool outside << 1336 # standard Kbuild "hostprogs" syntax instead << 1337 # here. See Documentation/kbuild/makefiles.rs << 1338 << 1339 PHONY += resolve_btfids_clean << 1340 << 1341 resolve_btfids_O = $(abspath $(objtree))/tool << 1342 << 1343 # tools/bpf/resolve_btfids directory might no << 1344 # in output directory, skip its clean in that << 1345 resolve_btfids_clean: << 1346 ifneq ($(wildcard $(resolve_btfids_O)),) << 1347 $(Q)$(MAKE) -sC $(srctree)/tools/bpf/ << 1348 endif << 1349 << 1350 # Clear a bunch of variables before executing << 1351 ifeq ($(quiet),silent_) << 1352 tools_silent=s << 1353 endif << 1354 << 1355 tools/: FORCE << 1356 $(Q)mkdir -p $(objtree)/tools << 1357 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1358 << 1359 tools/%: FORCE << 1360 $(Q)mkdir -p $(objtree)/tools << 1361 $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(too << 1362 1073 1363 # ------------------------------------------- 1074 # --------------------------------------------------------------------------- 1364 # Kernel selftest !! 1075 # Kernel headers 1365 << 1366 PHONY += kselftest << 1367 kselftest: headers << 1368 $(Q)$(MAKE) -C $(srctree)/tools/testi << 1369 << 1370 kselftest-%: headers FORCE << 1371 $(Q)$(MAKE) -C $(srctree)/tools/testi << 1372 << 1373 PHONY += kselftest-merge << 1374 kselftest-merge: << 1375 $(if $(wildcard $(objtree)/.config),, << 1376 $(Q)find $(srctree)/tools/testing/sel << 1377 xargs $(srctree)/scripts/kcon << 1378 $(Q)$(MAKE) -f $(srctree)/Makefile ol << 1379 << 1380 # ------------------------------------------- << 1381 # Devicetree files << 1382 << 1383 ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/ << 1384 dtstree := arch/$(SRCARCH)/boot/dts << 1385 endif << 1386 << 1387 ifneq ($(dtstree),) << 1388 << 1389 %.dtb: dtbs_prepare << 1390 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1391 << 1392 %.dtbo: dtbs_prepare << 1393 $(Q)$(MAKE) $(build)=$(dtstree) $(dts << 1394 << 1395 PHONY += dtbs dtbs_prepare dtbs_install dtbs_ << 1396 dtbs: dtbs_prepare << 1397 $(Q)$(MAKE) $(build)=$(dtstree) need- << 1398 << 1399 # include/config/kernel.release is actually n << 1400 # INSTALL_DTBS_PATH contains $(KERNELRELEASE) << 1401 # dtbs_install depend on it as dtbs_install m << 1402 dtbs_prepare: include/config/kernel.release s << 1403 << 1404 ifneq ($(filter dtbs_check, $(MAKECMDGOALS)), << 1405 export CHECK_DTBS=y << 1406 endif << 1407 << 1408 ifneq ($(CHECK_DTBS),) << 1409 dtbs_prepare: dt_binding_schemas << 1410 endif << 1411 << 1412 dtbs_check: dtbs << 1413 << 1414 dtbs_install: << 1415 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1416 << 1417 ifdef CONFIG_OF_EARLY_FLATTREE << 1418 all: dtbs << 1419 endif << 1420 1076 1421 endif !! 1077 #Default location for installed headers >> 1078 export INSTALL_HDR_PATH = $(objtree)/usr 1422 1079 1423 PHONY += scripts_dtc !! 1080 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj 1424 scripts_dtc: scripts_basic !! 1081 # Find out where the Kbuild file is located to support 1425 $(Q)$(MAKE) $(build)=scripts/dtc !! 1082 # arch/$(ARCH)/include/asm >> 1083 hdr-dir = $(strip \ >> 1084 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild), \ >> 1085 arch/$(hdr-arch)/include/asm, include/asm-$(hdr-arch))) 1426 1086 1427 ifneq ($(filter dt_binding_check, $(MAKECMDGO !! 1087 # If we do an all arch process set dst to asm-$(hdr-arch) 1428 export CHECK_DTBS=y !! 1088 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1429 endif << 1430 1089 1431 PHONY += dt_binding_check dt_binding_schemas !! 1090 PHONY += __headers 1432 dt_binding_check: dt_binding_schemas scripts_ !! 1091 __headers: include/linux/version.h scripts_basic FORCE 1433 $(Q)$(MAKE) $(build)=Documentation/de !! 1092 $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1434 1093 1435 dt_binding_schemas: !! 1094 PHONY += headers_install_all 1436 $(Q)$(MAKE) $(build)=Documentation/de !! 1095 headers_install_all: >> 1096 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1437 1097 1438 PHONY += dt_compatible_check !! 1098 PHONY += headers_install 1439 dt_compatible_check: dt_binding_schemas !! 1099 headers_install: __headers 1440 $(Q)$(MAKE) $(build)=Documentation/de !! 1100 $(if $(wildcard $(srctree)/$(hdr-dir)/Kbuild),, \ >> 1101 $(error Headers not exportable for the $(SRCARCH) architecture)) >> 1102 $(Q)$(MAKE) $(hdr-inst)=include >> 1103 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) >> 1104 >> 1105 PHONY += headers_check_all >> 1106 headers_check_all: headers_install_all >> 1107 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check >> 1108 >> 1109 PHONY += headers_check >> 1110 headers_check: headers_install >> 1111 $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 >> 1112 $(Q)$(MAKE) $(hdr-inst)=$(hdr-dir) $(hdr-dst) HDRCHECK=1 1441 1113 1442 # ------------------------------------------- 1114 # --------------------------------------------------------------------------- 1443 # Modules 1115 # Modules 1444 1116 1445 ifdef CONFIG_MODULES 1117 ifdef CONFIG_MODULES 1446 1118 1447 # By default, build modules as well 1119 # By default, build modules as well 1448 1120 1449 all: modules 1121 all: modules 1450 1122 1451 # When we're building modules with modversion !! 1123 # Build modules 1452 # the built-in objects during the descend as << 1453 # make sure the checksums are up to date befo << 1454 ifdef CONFIG_MODVERSIONS << 1455 KBUILD_BUILTIN := 1 << 1456 endif << 1457 << 1458 # Build modules << 1459 # 1124 # >> 1125 # A module can be listed more than once in obj-m resulting in >> 1126 # duplicate lines in modules.order files. Those are removed >> 1127 # using awk while concatenating to the final file. >> 1128 >> 1129 PHONY += modules >> 1130 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) >> 1131 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order >> 1132 @$(kecho) ' Building modules, stage 2.'; >> 1133 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1134 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1460 1135 1461 # *.ko are usually independent of vmlinux, bu << 1462 # is an exception. << 1463 ifdef CONFIG_DEBUG_INFO_BTF_MODULES << 1464 KBUILD_BUILTIN := 1 << 1465 modules: vmlinux << 1466 endif << 1467 << 1468 modules: modules_prepare << 1469 1136 1470 # Target to prepare building external modules 1137 # Target to prepare building external modules 1471 modules_prepare: prepare !! 1138 PHONY += modules_prepare 1472 $(Q)$(MAKE) $(build)=scripts scripts/ !! 1139 modules_prepare: prepare scripts >> 1140 >> 1141 # Target to install modules >> 1142 PHONY += modules_install >> 1143 modules_install: _modinst_ _modinst_post >> 1144 >> 1145 PHONY += _modinst_ >> 1146 _modinst_: >> 1147 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ >> 1148 echo "Warning: you may need to install module-init-tools"; \ >> 1149 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ >> 1150 sleep 1; \ >> 1151 fi >> 1152 @rm -rf $(MODLIB)/kernel >> 1153 @rm -f $(MODLIB)/source >> 1154 @mkdir -p $(MODLIB)/kernel >> 1155 @ln -s $(srctree) $(MODLIB)/source >> 1156 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ >> 1157 rm -f $(MODLIB)/build ; \ >> 1158 ln -s $(objtree) $(MODLIB)/build ; \ >> 1159 fi >> 1160 @cp -f $(objtree)/modules.order $(MODLIB)/ >> 1161 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1162 >> 1163 # This depmod is only for convenience to give the initial >> 1164 # boot a modules.dep even before / is mounted read-write. However the >> 1165 # boot script depmod is the master version. >> 1166 PHONY += _modinst_post >> 1167 _modinst_post: _modinst_ >> 1168 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst >> 1169 $(call cmd,depmod) >> 1170 >> 1171 else # CONFIG_MODULES >> 1172 >> 1173 # Modules not configured >> 1174 # --------------------------------------------------------------------------- >> 1175 >> 1176 modules modules_install: FORCE >> 1177 @echo >> 1178 @echo "The present kernel configuration has modules disabled." >> 1179 @echo "Type 'make config' and enable loadable module support." >> 1180 @echo "Then build a kernel with module support enabled." >> 1181 @echo >> 1182 @exit 1 1473 1183 1474 endif # CONFIG_MODULES 1184 endif # CONFIG_MODULES 1475 1185 1476 ### 1186 ### 1477 # Cleaning is done on three levels. 1187 # Cleaning is done on three levels. 1478 # make clean Delete most generated files 1188 # make clean Delete most generated files 1479 # Leave enough to build extern 1189 # Leave enough to build external modules 1480 # make mrproper Delete the current configura 1190 # make mrproper Delete the current configuration, and all generated files 1481 # make distclean Remove editor backup files, 1191 # make distclean Remove editor backup files, patch leftover files and the like 1482 1192 1483 # Directories & files removed with 'make clea 1193 # Directories & files removed with 'make clean' 1484 CLEAN_FILES += vmlinux.symvers modules-only.s !! 1194 CLEAN_DIRS += $(MODVERDIR) 1485 modules.builtin modules.builti !! 1195 CLEAN_FILES += vmlinux System.map \ 1486 compile_commands.json rust/tes !! 1196 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map 1487 rust-project.json .vmlinux.obj << 1488 1197 1489 # Directories & files removed with 'make mrpr 1198 # Directories & files removed with 'make mrproper' 1490 MRPROPER_FILES += include/config include/gene !! 1199 MRPROPER_DIRS += include/config include2 usr/include include/generated 1491 arch/$(SRCARCH)/include/gen !! 1200 MRPROPER_FILES += .config .config.old include/asm .version .old_version \ 1492 debian snap tar-install PKG !! 1201 include/linux/autoconf.h include/linux/version.h \ 1493 .config .config.old .versio !! 1202 include/linux/utsrelease.h \ 1494 Module.symvers \ !! 1203 include/linux/bounds.h include/asm*/asm-offsets.h \ 1495 certs/signing_key.pem \ !! 1204 Module.symvers Module.markers tags TAGS cscope* 1496 certs/x509.genkey \ << 1497 vmlinux-gdb.py \ << 1498 rpmbuild \ << 1499 rust/libmacros.so << 1500 1205 1501 # clean - Delete most, but leave enough to bu 1206 # clean - Delete most, but leave enough to build external modules 1502 # 1207 # 1503 clean: private rm-files := $(CLEAN_FILES) !! 1208 clean: rm-dirs := $(CLEAN_DIRS) 1504 !! 1209 clean: rm-files := $(CLEAN_FILES) 1505 PHONY += archclean vmlinuxclean !! 1210 clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs) Documentation) 1506 1211 1507 vmlinuxclean: !! 1212 PHONY += $(clean-dirs) clean archclean 1508 $(Q)$(CONFIG_SHELL) $(srctree)/script !! 1213 $(clean-dirs): 1509 $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f !! 1214 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1510 1215 1511 clean: archclean vmlinuxclean resolve_btfids_ !! 1216 clean: archclean $(clean-dirs) >> 1217 $(call cmd,rmdirs) >> 1218 $(call cmd,rmfiles) >> 1219 @find . $(RCS_FIND_IGNORE) \ >> 1220 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ >> 1221 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ >> 1222 -o -name '*.symtypes' -o -name 'modules.order' \ >> 1223 -o -name 'Module.markers' -o -name '.tmp_*.o.*' \ >> 1224 -o -name '*.gcno' \) -type f -print | xargs rm -f 1512 1225 1513 # mrproper - Delete all generated files, incl 1226 # mrproper - Delete all generated files, including .config 1514 # 1227 # 1515 mrproper: private rm-files := $(MRPROPER_FILE !! 1228 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1516 mrproper-dirs := $(addprefix _mrproper_, !! 1229 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) >> 1230 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1517 1231 1518 PHONY += $(mrproper-dirs) mrproper !! 1232 PHONY += $(mrproper-dirs) mrproper archmrproper 1519 $(mrproper-dirs): 1233 $(mrproper-dirs): 1520 $(Q)$(MAKE) $(clean)=$(patsubst _mrpr 1234 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1521 1235 1522 mrproper: clean $(mrproper-dirs) !! 1236 mrproper: clean archmrproper $(mrproper-dirs) >> 1237 $(call cmd,rmdirs) 1523 $(call cmd,rmfiles) 1238 $(call cmd,rmfiles) 1524 @find . $(RCS_FIND_IGNORE) \ << 1525 \( -name '*.rmeta' \) \ << 1526 -type f -print | xargs rm -f << 1527 1239 1528 # distclean 1240 # distclean 1529 # 1241 # 1530 PHONY += distclean 1242 PHONY += distclean 1531 1243 1532 distclean: mrproper 1244 distclean: mrproper 1533 @find . $(RCS_FIND_IGNORE) \ !! 1245 @find $(srctree) $(RCS_FIND_IGNORE) \ 1534 \( -name '*.orig' -o -name '* 1246 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1535 -o -name '*.bak' -o -name '#* !! 1247 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1536 -o -name 'core' -o -name tags !! 1248 -o -name '.*.rej' -o -size 0 \ 1537 -o -name GPATH -o -name GRTAG !! 1249 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ 1538 -type f -print | xargs rm -f 1250 -type f -print | xargs rm -f 1539 1251 1540 1252 1541 # Packaging of the kernel to various formats 1253 # Packaging of the kernel to various formats 1542 # ------------------------------------------- 1254 # --------------------------------------------------------------------------- >> 1255 # rpm target kept for backward compatibility >> 1256 package-dir := $(srctree)/scripts/package 1543 1257 1544 %src-pkg: FORCE << 1545 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1546 %pkg: include/config/kernel.release FORCE 1258 %pkg: include/config/kernel.release FORCE 1547 $(Q)$(MAKE) -f $(srctree)/scripts/Mak !! 1259 $(Q)$(MAKE) $(build)=$(package-dir) $@ >> 1260 rpm: include/config/kernel.release FORCE >> 1261 $(Q)$(MAKE) $(build)=$(package-dir) $@ >> 1262 1548 1263 1549 # Brief documentation of the typical targets 1264 # Brief documentation of the typical targets used 1550 # ------------------------------------------- 1265 # --------------------------------------------------------------------------- 1551 1266 1552 boards := $(wildcard $(srctree)/arch/$(SRCARC 1267 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1553 boards := $(sort $(notdir $(boards))) !! 1268 boards := $(notdir $(boards)) 1554 board-dirs := $(dir $(wildcard $(srctree)/arc 1269 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1555 board-dirs := $(sort $(notdir $(board-dirs:/= 1270 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1556 1271 1557 PHONY += help << 1558 help: 1272 help: 1559 @echo 'Cleaning targets:' 1273 @echo 'Cleaning targets:' 1560 @echo ' clean - Remove mo 1274 @echo ' clean - Remove most generated files but keep the config and' 1561 @echo ' enough bu 1275 @echo ' enough build support to build external modules' 1562 @echo ' mrproper - Remove al 1276 @echo ' mrproper - Remove all generated files + config + various backup files' 1563 @echo ' distclean - mrproper 1277 @echo ' distclean - mrproper + remove editor backup and patch files' 1564 @echo '' 1278 @echo '' >> 1279 @echo 'Configuration targets:' 1565 @$(MAKE) -f $(srctree)/scripts/kconfi 1280 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1566 @echo '' 1281 @echo '' 1567 @echo 'Other generic targets:' 1282 @echo 'Other generic targets:' 1568 @echo ' all - Build all 1283 @echo ' all - Build all targets marked with [*]' 1569 @echo '* vmlinux - Build the 1284 @echo '* vmlinux - Build the bare kernel' 1570 @echo '* modules - Build all 1285 @echo '* modules - Build all modules' 1571 @echo ' modules_install - Install a 1286 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1572 @echo ' vdso_install - Install u !! 1287 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' >> 1288 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1573 @echo ' dir/ - Build all 1289 @echo ' dir/ - Build all files in dir and below' 1574 @echo ' dir/file.[ois] - Build spe 1290 @echo ' dir/file.[ois] - Build specified target only' 1575 @echo ' dir/file.ll - Build the << 1576 @echo ' (requires << 1577 @echo ' dir/file.lst - Build spe << 1578 @echo ' (requires << 1579 @echo ' dir/file.ko - Build mod 1291 @echo ' dir/file.ko - Build module including final link' 1580 @echo ' modules_prepare - Set up fo 1292 @echo ' modules_prepare - Set up for building external modules' 1581 @echo ' tags/TAGS - Generate 1293 @echo ' tags/TAGS - Generate tags file for editors' 1582 @echo ' cscope - Generate 1294 @echo ' cscope - Generate cscope index' 1583 @echo ' gtags - Generate !! 1295 @echo ' kernelrelease - Output the release version string' 1584 @echo ' kernelrelease - Output th !! 1296 @echo ' kernelversion - Output the version stored in Makefile' 1585 @echo ' kernelversion - Output th << 1586 @echo ' image_name - Output th << 1587 @echo ' headers_install - Install s 1297 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1588 echo ' (default: 1298 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1589 echo '' 1299 echo '' 1590 @echo 'Static analysers:' !! 1300 @echo 'Static analysers' 1591 @echo ' checkstack - Generate !! 1301 @echo ' checkstack - Generate a list of stack hogs' 1592 @echo ' with a st !! 1302 @echo ' namespacecheck - Name space analysis on compiled kernel' 1593 @echo ' versioncheck - Sanity ch 1303 @echo ' versioncheck - Sanity check on version.h usage' 1594 @echo ' includecheck - Check for 1304 @echo ' includecheck - Check for duplicate included header files' 1595 @echo ' export_report - List the 1305 @echo ' export_report - List the usages of all exported symbols' 1596 @echo ' headerdep - Detect in !! 1306 @echo ' headers_check - Sanity check on exported headers' 1597 @echo ' coccicheck - Check wit !! 1307 @echo ' headerdep - Detect inclusion cycles in headers'; \ 1598 @echo ' clang-analyzer - Check wit !! 1308 echo '' 1599 @echo ' clang-tidy - Check wit << 1600 @echo '' << 1601 @echo 'Tools:' << 1602 @echo ' nsdeps - Generate << 1603 @echo '' << 1604 @echo 'Kernel selftest:' << 1605 @echo ' kselftest - Build a << 1606 @echo ' Build, << 1607 @echo ' running << 1608 @echo ' Run as << 1609 @echo ' kselftest-all - Build k << 1610 @echo ' kselftest-install - Build a << 1611 @echo ' kselftest-clean - Remove << 1612 @echo ' kselftest-merge - Merge a << 1613 @echo ' kselfte << 1614 @echo '' << 1615 @echo 'Rust targets:' << 1616 @echo ' rustavailable - Checks wh << 1617 @echo ' available << 1618 @echo ' rustfmt - Reformat << 1619 @echo ' rustfmtcheck - Checks if << 1620 @echo ' is format << 1621 @echo ' rustdoc - Generate << 1622 @echo ' (requires << 1623 @echo ' rusttest - Runs the << 1624 @echo ' (requires << 1625 @echo ' rust-analyzer - Generate << 1626 @echo ' (requires << 1627 @echo ' dir/file.[os] - Build spe << 1628 @echo ' dir/file.rsi - Build mac << 1629 @echo ' Run with << 1630 @echo ' The outpu << 1631 @echo ' dir/file.ll - Build the << 1632 @echo '' << 1633 @$(if $(dtstree), \ << 1634 echo 'Devicetree:'; \ << 1635 echo '* dtbs - << 1636 echo ' dtbs_install - << 1637 echo ' dt_binding_check - << 1638 echo ' dt_binding_schema - << 1639 echo ' dtbs_check - << 1640 echo '') << 1641 << 1642 @echo 'Userspace tools targets:' << 1643 @echo ' use "make tools/help"' << 1644 @echo ' or "cd tools; make help"' << 1645 @echo '' << 1646 @echo 'Kernel packaging:' 1309 @echo 'Kernel packaging:' 1647 @$(MAKE) -f $(srctree)/scripts/Makefi !! 1310 @$(MAKE) $(build)=$(package-dir) help 1648 @echo '' 1311 @echo '' 1649 @echo 'Documentation targets:' 1312 @echo 'Documentation targets:' 1650 @$(MAKE) -f $(srctree)/Documentation/ !! 1313 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1651 @echo '' 1314 @echo '' 1652 @echo 'Architecture-specific targets !! 1315 @echo 'Architecture specific targets ($(SRCARCH)):' 1653 @$(or $(archhelp),\ !! 1316 @$(if $(archhelp),$(archhelp),\ 1654 echo ' No architecture-speci !! 1317 echo ' No architecture specific help defined for $(SRCARCH)') 1655 @echo '' 1318 @echo '' 1656 @$(if $(boards), \ 1319 @$(if $(boards), \ 1657 $(foreach b, $(boards), \ 1320 $(foreach b, $(boards), \ 1658 printf " %-27s - Build for % !! 1321 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1659 echo '') 1322 echo '') 1660 @$(if $(board-dirs), \ 1323 @$(if $(board-dirs), \ 1661 $(foreach b, $(board-dirs), \ 1324 $(foreach b, $(board-dirs), \ 1662 printf " %-16s - Show %s-spe 1325 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1663 printf " %-16s - Show all of 1326 printf " %-16s - Show all of the above\\n" help-boards; \ 1664 echo '') 1327 echo '') 1665 1328 1666 @echo ' make V=n [targets] 1: ver !! 1329 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1667 @echo ' 2: giv !! 1330 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1668 @echo ' V=1 an << 1669 @echo ' make O=dir [targets] Locate 1331 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1670 @echo ' make C=1 [targets] Check !! 1332 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1671 @echo ' (spars << 1672 @echo ' make C=2 [targets] Force 1333 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1673 @echo ' make RECORDMCOUNT_WARN=1 [t << 1674 @echo ' make W=n [targets] Enable << 1675 @echo ' 1: warnings w << 1676 @echo ' 2: warnings w << 1677 @echo ' 3: more obscu << 1678 @echo ' c: extra chec << 1679 @echo ' e: warnings a << 1680 @echo ' Multiple leve << 1681 @$(if $(dtstree), \ << 1682 echo ' make CHECK_DTBS=1 [ta << 1683 echo ' This can be ap << 1684 ) << 1685 @echo '' 1334 @echo '' 1686 @echo 'Execute "make" or "make all" 1335 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1687 @echo 'For further info see the ./RE 1336 @echo 'For further info see the ./README file' 1688 1337 1689 1338 1690 help-board-dirs := $(addprefix help-,$(board- 1339 help-board-dirs := $(addprefix help-,$(board-dirs)) 1691 1340 1692 help-boards: $(help-board-dirs) 1341 help-boards: $(help-board-dirs) 1693 1342 1694 boards-per-dir = $(sort $(notdir $(wildcard $ !! 1343 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) 1695 1344 1696 $(help-board-dirs): help-%: 1345 $(help-board-dirs): help-%: 1697 @echo 'Architecture-specific targets !! 1346 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1698 @$(if $(boards-per-dir), \ 1347 @$(if $(boards-per-dir), \ 1699 $(foreach b, $(boards-per-dir 1348 $(foreach b, $(boards-per-dir), \ 1700 printf " %-24s - Build for % 1349 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1701 echo '') 1350 echo '') 1702 1351 1703 1352 1704 # Documentation targets 1353 # Documentation targets 1705 # ------------------------------------------- 1354 # --------------------------------------------------------------------------- 1706 DOC_TARGETS := xmldocs latexdocs pdfdocs html !! 1355 %docs: scripts_basic FORCE 1707 linkcheckdocs dochelp refcheck !! 1356 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1708 PHONY += $(DOC_TARGETS) << 1709 $(DOC_TARGETS): << 1710 $(Q)$(MAKE) $(build)=Documentation $@ << 1711 << 1712 << 1713 # Rust targets << 1714 # ------------------------------------------- << 1715 << 1716 # "Is Rust available?" target << 1717 PHONY += rustavailable << 1718 rustavailable: << 1719 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1720 << 1721 # Documentation target << 1722 # << 1723 # Using the singular to avoid running afoul o << 1724 PHONY += rustdoc << 1725 rustdoc: prepare << 1726 $(Q)$(MAKE) $(build)=rust $@ << 1727 << 1728 # Testing target << 1729 PHONY += rusttest << 1730 rusttest: prepare << 1731 $(Q)$(MAKE) $(build)=rust $@ << 1732 << 1733 # Formatting targets << 1734 PHONY += rustfmt rustfmtcheck << 1735 << 1736 # We skip `rust/alloc` since we want to minim << 1737 # << 1738 # We match using absolute paths since `find` << 1739 # when matching, which is a problem when e.g. << 1740 # We `grep` afterwards in order to remove the << 1741 rustfmt: << 1742 $(Q)find $(abs_srctree) -type f -name << 1743 -o -path $(abs_srctree)/rust/ << 1744 -o -path $(abs_objtree)/rust/ << 1745 | grep -Fv $(abs_srctree)/rus << 1746 | grep -Fv $(abs_objtree)/rus << 1747 | grep -Fv generated \ << 1748 | xargs $(RUSTFMT) $(rustfmt_ << 1749 << 1750 rustfmtcheck: rustfmt_flags = --check << 1751 rustfmtcheck: rustfmt << 1752 << 1753 # Misc << 1754 # ------------------------------------------- << 1755 << 1756 PHONY += misc-check << 1757 misc-check: << 1758 $(Q)$(srctree)/scripts/misc-check << 1759 << 1760 all: misc-check << 1761 << 1762 PHONY += scripts_gdb << 1763 scripts_gdb: prepare0 << 1764 $(Q)$(MAKE) $(build)=scripts/gdb << 1765 $(Q)ln -fsn $(abspath $(srctree)/scri << 1766 << 1767 ifdef CONFIG_GDB_SCRIPTS << 1768 all: scripts_gdb << 1769 endif << 1770 1357 1771 else # KBUILD_EXTMOD 1358 else # KBUILD_EXTMOD 1772 1359 1773 filechk_kernel.release = echo $(KERNELRELEASE << 1774 << 1775 ### 1360 ### 1776 # External module support. 1361 # External module support. 1777 # When building external modules the kernel u 1362 # When building external modules the kernel used as basis is considered 1778 # read-only, and no consistency checks are ma 1363 # read-only, and no consistency checks are made and the make 1779 # system is not used on the basis kernel. If 1364 # system is not used on the basis kernel. If updates are required 1780 # in the basis kernel ordinary make commands !! 1365 # in the basis kernel ordinary make commands (without M=...) must >> 1366 # be used. >> 1367 # >> 1368 # The following are the only valid targets when building external >> 1369 # modules. >> 1370 # make M=dir clean Delete all automatically generated files >> 1371 # make M=dir modules Make all modules in specified dir >> 1372 # make M=dir Same as 'make M=dir modules' >> 1373 # make M=dir modules_install >> 1374 # Install the modules built in the module directory >> 1375 # Assumes install directory is already created 1781 1376 1782 # We are always building only modules. !! 1377 # We are always building modules 1783 KBUILD_BUILTIN := << 1784 KBUILD_MODULES := 1 1378 KBUILD_MODULES := 1 >> 1379 PHONY += crmodverdir >> 1380 crmodverdir: >> 1381 $(cmd_crmodverdir) >> 1382 >> 1383 PHONY += $(objtree)/Module.symvers >> 1384 $(objtree)/Module.symvers: >> 1385 @test -e $(objtree)/Module.symvers || ( \ >> 1386 echo; \ >> 1387 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ >> 1388 echo " is missing; modules will have no dependencies and modversions."; \ >> 1389 echo ) >> 1390 >> 1391 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) >> 1392 PHONY += $(module-dirs) modules >> 1393 $(module-dirs): crmodverdir $(objtree)/Module.symvers >> 1394 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) >> 1395 >> 1396 modules: $(module-dirs) >> 1397 @$(kecho) ' Building modules, stage 2.'; >> 1398 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1785 1399 1786 build-dir := $(KBUILD_EXTMOD) !! 1400 PHONY += modules_install >> 1401 modules_install: _emodinst_ _emodinst_post 1787 1402 1788 compile_commands.json: $(extmod_prefix)compil !! 1403 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1789 PHONY += compile_commands.json !! 1404 PHONY += _emodinst_ >> 1405 _emodinst_: >> 1406 $(Q)mkdir -p $(MODLIB)/$(install-dir) >> 1407 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst >> 1408 >> 1409 PHONY += _emodinst_post >> 1410 _emodinst_post: _emodinst_ >> 1411 $(call cmd,depmod) 1790 1412 1791 clean-dirs := $(KBUILD_EXTMOD) !! 1413 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1792 clean: private rm-files := $(KBUILD_EXTMOD)/M !! 1414 1793 $(KBUILD_EXTMOD)/compile_commands.jso !! 1415 PHONY += $(clean-dirs) clean 1794 !! 1416 $(clean-dirs): 1795 PHONY += prepare !! 1417 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1796 # now expand this into a simple variable to r !! 1418 1797 prepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT !! 1419 clean: rm-dirs := $(MODVERDIR) 1798 prepare: !! 1420 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers \ 1799 @if [ "$(CC_VERSION_TEXT)" != "$(CONF !! 1421 $(KBUILD_EXTMOD)/Module.markers \ 1800 echo >&2 "warning: the compil !! 1422 $(KBUILD_EXTMOD)/modules.order 1801 echo >&2 " The kernel was bu !! 1423 clean: $(clean-dirs) 1802 echo >&2 " You are using: !! 1424 $(call cmd,rmdirs) 1803 fi !! 1425 $(call cmd,rmfiles) >> 1426 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ >> 1427 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ >> 1428 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ >> 1429 -o -name '*.gcno' \) -type f -print | xargs rm -f 1804 1430 1805 PHONY += help << 1806 help: 1431 help: 1807 @echo ' Building external modules.' 1432 @echo ' Building external modules.' 1808 @echo ' Syntax: make -C path/to/ker 1433 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1809 @echo '' 1434 @echo '' 1810 @echo ' modules - default t 1435 @echo ' modules - default target, build the module(s)' 1811 @echo ' modules_install - install t 1436 @echo ' modules_install - install the module' 1812 @echo ' clean - remove ge 1437 @echo ' clean - remove generated files in module directory only' 1813 @echo ' rust-analyzer - generate << 1814 @echo '' 1438 @echo '' 1815 1439 1816 ifndef CONFIG_MODULES !! 1440 # Dummies... 1817 modules modules_install: __external_modules_e !! 1441 PHONY += prepare scripts 1818 __external_modules_error: !! 1442 prepare: ; 1819 @echo >&2 '***' !! 1443 scripts: ; 1820 @echo >&2 '*** The present kernel dis << 1821 @echo >&2 '*** You cannot build or in << 1822 @echo >&2 '***' << 1823 @false << 1824 endif << 1825 << 1826 endif # KBUILD_EXTMOD 1444 endif # KBUILD_EXTMOD 1827 1445 1828 # ------------------------------------------- << 1829 # Modules << 1830 << 1831 PHONY += modules modules_install modules_sign << 1832 << 1833 modules_install: << 1834 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1835 sign-only=$(if $(filter modules_insta << 1836 << 1837 ifeq ($(CONFIG_MODULE_SIG),y) << 1838 # modules_sign is a subset of modules_install << 1839 # 'make modules_install modules_sign' is equi << 1840 modules_sign: modules_install << 1841 @: << 1842 else << 1843 modules_sign: << 1844 @echo >&2 '***' << 1845 @echo >&2 '*** CONFIG_MODULE_SIG is d << 1846 @echo >&2 '***' << 1847 @false << 1848 endif << 1849 << 1850 ifdef CONFIG_MODULES << 1851 << 1852 $(MODORDER): $(build-dir) << 1853 @: << 1854 << 1855 # KBUILD_MODPOST_NOFINAL can be set to skip t << 1856 # This is solely useful to speed up test comp << 1857 modules: modpost << 1858 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1859 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1860 endif << 1861 << 1862 PHONY += modules_check << 1863 modules_check: $(MODORDER) << 1864 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1865 << 1866 else # CONFIG_MODULES << 1867 << 1868 modules: << 1869 @: << 1870 << 1871 KBUILD_MODULES := << 1872 << 1873 endif # CONFIG_MODULES << 1874 << 1875 PHONY += modpost << 1876 modpost: $(if $(single-build),, $(if $(KBUILD << 1877 $(if $(KBUILD_MODULES), modules_chec << 1878 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1879 << 1880 # Single targets << 1881 # ------------------------------------------- << 1882 # To build individual files in subdirectories << 1883 # << 1884 # make foo/bar/baz.s << 1885 # << 1886 # The supported suffixes for single-target ar << 1887 # << 1888 # To build only under specific subdirectories << 1889 # << 1890 # make foo/bar/baz/ << 1891 << 1892 ifdef single-build << 1893 << 1894 # .ko is special because modpost is needed << 1895 single-ko := $(sort $(filter %.ko, $(MAKECMDG << 1896 single-no-ko := $(filter-out $(single-ko), $( << 1897 $(foreach x, o mod, $(patsubs << 1898 << 1899 $(single-ko): single_modules << 1900 @: << 1901 $(single-no-ko): $(build-dir) << 1902 @: << 1903 << 1904 # Remove MODORDER when done because it is not << 1905 PHONY += single_modules << 1906 single_modules: $(single-no-ko) modules_prepa << 1907 $(Q){ $(foreach m, $(single-ko), echo << 1908 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1909 ifneq ($(KBUILD_MODPOST_NOFINAL),1) << 1910 $(Q)$(MAKE) -f $(srctree)/scripts/Mak << 1911 endif << 1912 $(Q)rm -f $(MODORDER) << 1913 << 1914 single-goals := $(addprefix $(build-dir)/, $( << 1915 << 1916 KBUILD_MODULES := 1 << 1917 << 1918 endif << 1919 << 1920 # Preset locale variables to speed up the bui << 1921 # tweaks to this spot to avoid wrong language << 1922 # make menuconfig etc. << 1923 # Error messages still appears in the origina << 1924 PHONY += $(build-dir) << 1925 $(build-dir): prepare << 1926 $(Q)$(MAKE) $(build)=$@ need-builtin= << 1927 << 1928 clean-dirs := $(addprefix _clean_, $(clean-di << 1929 PHONY += $(clean-dirs) clean << 1930 $(clean-dirs): << 1931 $(Q)$(MAKE) $(clean)=$(patsubst _clea << 1932 << 1933 clean: $(clean-dirs) << 1934 $(call cmd,rmfiles) << 1935 @find $(or $(KBUILD_EXTMOD), .) $(RCS << 1936 \( -name '*.[aios]' -o -name << 1937 -o -name '*.ko.*' \ << 1938 -o -name '*.dtb' -o -name '*. << 1939 -o -name '*.dtb.S' -o -name ' << 1940 -o -name '*.dt.yaml' -o -name << 1941 -o -name '*.dwo' -o -name '*. << 1942 -o -name '*.su' -o -name '*.m << 1943 -o -name '.*.d' -o -name '.*. << 1944 -o -name '*.lex.c' -o -name ' << 1945 -o -name '*.asn1.[ch]' \ << 1946 -o -name '*.symtypes' -o -nam << 1947 -o -name '*.c.[012]*.*' \ << 1948 -o -name '*.ll' \ << 1949 -o -name '*.gcno' \ << 1950 -o -name '*.*.symversions' \) << 1951 -o -name '.tmp_*' -print \ << 1952 | xargs rm -rf << 1953 << 1954 # Generate tags for editors 1446 # Generate tags for editors 1955 # ------------------------------------------- 1447 # --------------------------------------------------------------------------- 1956 quiet_cmd_tags = GEN $@ 1448 quiet_cmd_tags = GEN $@ 1957 cmd_tags = $(BASH) $(srctree)/scripts/t !! 1449 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1958 1450 1959 tags TAGS cscope gtags: FORCE !! 1451 tags TAGS cscope: FORCE 1960 $(call cmd,tags) 1452 $(call cmd,tags) 1961 1453 1962 # Generate rust-project.json (a file that des << 1963 # Rust projects) for rust-analyzer (an implem << 1964 # Protocol). << 1965 PHONY += rust-analyzer << 1966 rust-analyzer: << 1967 +$(Q)$(CONFIG_SHELL) $(srctree)/scrip << 1968 $(Q)$(MAKE) $(build)=rust $@ << 1969 << 1970 # Script to generate missing namespace depend << 1971 # ------------------------------------------- << 1972 << 1973 PHONY += nsdeps << 1974 nsdeps: export KBUILD_NSDEPS=1 << 1975 nsdeps: modules << 1976 $(Q)$(CONFIG_SHELL) $(srctree)/script << 1977 << 1978 # Clang Tooling << 1979 # ------------------------------------------- << 1980 << 1981 quiet_cmd_gen_compile_commands = GEN $@ << 1982 cmd_gen_compile_commands = $(PYTHON3) $ << 1983 << 1984 $(extmod_prefix)compile_commands.json: $(srct << 1985 $(if $(KBUILD_EXTMOD),, vmlinux.a $(K << 1986 $(if $(CONFIG_MODULES), $(MODORDER)) << 1987 $(call if_changed,gen_compile_command << 1988 << 1989 targets += $(extmod_prefix)compile_commands.j << 1990 << 1991 PHONY += clang-tidy clang-analyzer << 1992 << 1993 ifdef CONFIG_CC_IS_CLANG << 1994 quiet_cmd_clang_tools = CHECK $< << 1995 cmd_clang_tools = $(PYTHON3) $(srctree) << 1996 << 1997 clang-tidy clang-analyzer: $(extmod_prefix)co << 1998 $(call cmd,clang_tools) << 1999 else << 2000 clang-tidy clang-analyzer: << 2001 @echo "$@ requires CC=clang" >&2 << 2002 @false << 2003 endif << 2004 << 2005 # Scripts to check various things for consist 1454 # Scripts to check various things for consistency 2006 # ------------------------------------------- 1455 # --------------------------------------------------------------------------- 2007 1456 2008 PHONY += includecheck versioncheck coccicheck << 2009 << 2010 includecheck: 1457 includecheck: 2011 find $(srctree)/* $(RCS_FIND_IGNORE) !! 1458 find * $(RCS_FIND_IGNORE) \ 2012 -name '*.[hcS]' -type f -prin 1459 -name '*.[hcS]' -type f -print | sort \ 2013 | xargs $(PERL) -w $(srctree) 1460 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 2014 1461 2015 versioncheck: 1462 versioncheck: 2016 find $(srctree)/* $(RCS_FIND_IGNORE) !! 1463 find * $(RCS_FIND_IGNORE) \ 2017 -name '*.[hcS]' -type f -prin 1464 -name '*.[hcS]' -type f -print | sort \ 2018 | xargs $(PERL) -w $(srctree) 1465 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 2019 1466 2020 coccicheck: !! 1467 namespacecheck: 2021 $(Q)$(BASH) $(srctree)/scripts/$@ !! 1468 $(PERL) $(srctree)/scripts/namespace.pl 2022 1469 2023 export_report: 1470 export_report: 2024 $(PERL) $(srctree)/scripts/export_rep 1471 $(PERL) $(srctree)/scripts/export_report.pl 2025 1472 2026 PHONY += checkstack kernelrelease kernelversi !! 1473 endif #ifeq ($(config-targets),1) >> 1474 endif #ifeq ($(mixed-targets),1) >> 1475 >> 1476 PHONY += checkstack kernelrelease kernelversion 2027 1477 2028 # UML needs a little special treatment here. 1478 # UML needs a little special treatment here. It wants to use the host 2029 # toolchain, so needs $(SUBARCH) passed to ch 1479 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 2030 # else wants $(ARCH), including people doing 1480 # else wants $(ARCH), including people doing cross-builds, which means 2031 # that $(SUBARCH) doesn't work here. 1481 # that $(SUBARCH) doesn't work here. 2032 ifeq ($(ARCH), um) 1482 ifeq ($(ARCH), um) 2033 CHECKSTACK_ARCH := $(SUBARCH) 1483 CHECKSTACK_ARCH := $(SUBARCH) 2034 else 1484 else 2035 CHECKSTACK_ARCH := $(ARCH) 1485 CHECKSTACK_ARCH := $(ARCH) 2036 endif 1486 endif 2037 MINSTACKSIZE ?= 100 << 2038 checkstack: 1487 checkstack: 2039 $(OBJDUMP) -d vmlinux $$(find . -name 1488 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 2040 $(PERL) $(srctree)/scripts/checkstack !! 1489 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 2041 1490 2042 kernelrelease: 1491 kernelrelease: 2043 @$(filechk_kernel.release) !! 1492 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ 2044 !! 1493 $(error kernelrelease not valid - run 'make prepare' to update it)) 2045 kernelversion: 1494 kernelversion: 2046 @echo $(KERNELVERSION) 1495 @echo $(KERNELVERSION) 2047 1496 2048 image_name: !! 1497 # Single targets 2049 @echo $(KBUILD_IMAGE) !! 1498 # --------------------------------------------------------------------------- >> 1499 # Single targets are compatible with: >> 1500 # - build with mixed source and output >> 1501 # - build with separate output dir 'make O=...' >> 1502 # - external modules >> 1503 # >> 1504 # target-dir => where to store outputfile >> 1505 # build-dir => directory in kernel source tree to use >> 1506 >> 1507 ifeq ($(KBUILD_EXTMOD),) >> 1508 build-dir = $(patsubst %/,%,$(dir $@)) >> 1509 target-dir = $(dir $@) >> 1510 else >> 1511 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) >> 1512 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) >> 1513 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) >> 1514 endif >> 1515 >> 1516 %.s: %.c prepare scripts FORCE >> 1517 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1518 %.i: %.c prepare scripts FORCE >> 1519 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1520 %.o: %.c prepare scripts FORCE >> 1521 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1522 %.lst: %.c prepare scripts FORCE >> 1523 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1524 %.s: %.S prepare scripts FORCE >> 1525 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1526 %.o: %.S prepare scripts FORCE >> 1527 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1528 %.symtypes: %.c prepare scripts FORCE >> 1529 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) >> 1530 >> 1531 # Modules >> 1532 /: prepare scripts FORCE >> 1533 $(cmd_crmodverdir) >> 1534 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1535 $(build)=$(build-dir) >> 1536 %/: prepare scripts FORCE >> 1537 $(cmd_crmodverdir) >> 1538 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1539 $(build)=$(build-dir) >> 1540 %.ko: prepare scripts FORCE >> 1541 $(cmd_crmodverdir) >> 1542 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ >> 1543 $(build)=$(build-dir) $(@:.ko=.o) >> 1544 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost >> 1545 >> 1546 # FIXME Should go into a make.lib or something >> 1547 # =========================================================================== 2050 1548 2051 PHONY += run-command !! 1549 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 2052 run-command: !! 1550 cmd_rmdirs = rm -rf $(rm-dirs) 2053 $(Q)$(KBUILD_RUN_COMMAND) << 2054 1551 2055 quiet_cmd_rmfiles = $(if $(wildcard $(rm-file 1552 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 2056 cmd_rmfiles = rm -rf $(rm-files) !! 1553 cmd_rmfiles = rm -f $(rm-files) 2057 1554 2058 # read saved command lines for existing targe !! 1555 # Run depmod only if we have System.map and depmod is executable 2059 existing-targets := $(wildcard $(sort $(targe !! 1556 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) >> 1557 cmd_depmod = \ >> 1558 if [ -r System.map -a -x $(DEPMOD) ]; then \ >> 1559 $(DEPMOD) -ae -F System.map \ >> 1560 $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) ) \ >> 1561 $(KERNELRELEASE); \ >> 1562 fi >> 1563 >> 1564 # Create temporary dir for module support files >> 1565 # clean it up only when building all modules >> 1566 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ >> 1567 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) >> 1568 >> 1569 a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ >> 1570 $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \ >> 1571 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) >> 1572 >> 1573 quiet_cmd_as_o_S = AS $@ >> 1574 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< >> 1575 >> 1576 # read all saved command lines >> 1577 >> 1578 targets := $(wildcard $(sort $(targets))) >> 1579 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) >> 1580 >> 1581 ifneq ($(cmd_files),) >> 1582 $(cmd_files): ; # Do not try to update included dependency files >> 1583 include $(cmd_files) >> 1584 endif 2060 1585 2061 -include $(foreach f,$(existing-targets),$(di !! 1586 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir >> 1587 # Usage: >> 1588 # $(Q)$(MAKE) $(clean)=dir >> 1589 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj 2062 1590 2063 endif # config-build !! 1591 endif # skip-makefile 2064 endif # mixed-build << 2065 endif # need-sub-make << 2066 1592 2067 PHONY += FORCE 1593 PHONY += FORCE 2068 FORCE: 1594 FORCE: 2069 1595 2070 # Declare the contents of the PHONY variable !! 1596 # Declare the contents of the .PHONY variable as phony. We keep that 2071 # information in a variable so we can use it 1597 # information in a variable so we can use it in if_changed and friends. 2072 .PHONY: $(PHONY) 1598 .PHONY: $(PHONY)
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