1 b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 2 bfeffd15SLinus TorvaldsVERSION = 5 3 8f3d9f35SLinus TorvaldsPATCHLEVEL = 7 4 55922c9dSLinus TorvaldsSUBLEVEL = 0 5 2ef96a5bSLinus TorvaldsEXTRAVERSION = -rc5 6 d6d5df1dSLinus TorvaldsNAME = Kleptomaniac Octopus 7 1da177e4SLinus Torvalds 8 1da177e4SLinus Torvalds# *DOCUMENTATION* 9 1da177e4SLinus Torvalds# To see a list of typical targets execute "make help" 10 1da177e4SLinus Torvalds# More info can be located in ./README 11 1da177e4SLinus Torvalds# Comments in this file are targeted only to the developer, do not 12 1da177e4SLinus Torvalds# expect to learn how to build the kernel reading this file. 13 1da177e4SLinus Torvalds 14 121c2a13SMasahiro Yamada$(if $(filter __%, $(MAKECMDGOALS)), \ 15 121c2a13SMasahiro Yamada $(error targets prefixed with '__' are only for internal use)) 16 121c2a13SMasahiro Yamada 17 ba634eceSMasahiro Yamada# That's our default target when none is given on the command line 18 121c2a13SMasahiro YamadaPHONY := __all 19 121c2a13SMasahiro Yamada__all: 20 ba634eceSMasahiro Yamada 21 1da177e4SLinus Torvalds# We are using a recursive build, so we need to do a little thinking 22 1da177e4SLinus Torvalds# to get the ordering right. 23 1da177e4SLinus Torvalds# 24 1da177e4SLinus Torvalds# Most importantly: sub-Makefiles should only ever modify files in 25 1da177e4SLinus Torvalds# their own directory. If in some directory we have a dependency on 26 1da177e4SLinus Torvalds# a file in another dir (which doesn't happen often, but it's often 27 f49821eeSNicholas Piggin# unavoidable when linking the built-in.a targets which finally 28 1da177e4SLinus Torvalds# turn into vmlinux), we will call a sub make in that other dir, and 29 1da177e4SLinus Torvalds# after that we are sure that everything which is in that other dir 30 1da177e4SLinus Torvalds# is now up to date. 31 1da177e4SLinus Torvalds# 32 1da177e4SLinus Torvalds# The only cases where we need to modify files which have global 33 1da177e4SLinus Torvalds# effects are thus separated out and done before the recursive 34 1da177e4SLinus Torvalds# descending is started. They are now explicitly listed as the 35 1da177e4SLinus Torvalds# prepare rule. 36 1da177e4SLinus Torvalds 37 221cc2d2SMasahiro Yamadaifneq ($(sub_make_done),1) 38 3812b8c5SMasahiro Yamada 39 3812b8c5SMasahiro Yamada# Do not use make's built-in rules and variables 40 3812b8c5SMasahiro Yamada# (this increases performance and avoids hard-to-debug behaviour) 41 3812b8c5SMasahiro YamadaMAKEFLAGS += -rR 42 3812b8c5SMasahiro Yamada 43 3812b8c5SMasahiro Yamada# Avoid funny character set dependencies 44 3812b8c5SMasahiro Yamadaunexport LC_ALL 45 3812b8c5SMasahiro YamadaLC_COLLATE=C 46 3812b8c5SMasahiro YamadaLC_NUMERIC=C 47 3812b8c5SMasahiro Yamadaexport LC_COLLATE LC_NUMERIC 48 3812b8c5SMasahiro Yamada 49 3812b8c5SMasahiro Yamada# Avoid interference with shell env settings 50 3812b8c5SMasahiro Yamadaunexport GREP_OPTIONS 51 3812b8c5SMasahiro Yamada 52 066b7ed9SMichal Marek# Beautify output 53 066b7ed9SMichal Marek# --------------------------------------------------------------------------- 54 066b7ed9SMichal Marek# 55 066b7ed9SMichal Marek# Normally, we echo the whole command before executing it. By making 56 066b7ed9SMichal Marek# that echo $($(quiet)$(cmd)), we now have the possibility to set 57 066b7ed9SMichal Marek# $(quiet) to choose other forms of output instead, e.g. 58 066b7ed9SMichal Marek# 59 066b7ed9SMichal Marek# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 60 066b7ed9SMichal Marek# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 61 066b7ed9SMichal Marek# 62 066b7ed9SMichal Marek# If $(quiet) is empty, the whole command will be printed. 63 066b7ed9SMichal Marek# If it is set to "quiet_", only the short version will be printed. 64 066b7ed9SMichal Marek# If it is set to "silent_", nothing will be printed at all, since 65 066b7ed9SMichal Marek# the variable $(silent_cmd_cc_o_c) doesn't exist. 66 066b7ed9SMichal Marek# 67 066b7ed9SMichal Marek# A simple variant is to prefix commands with $(Q) - that's useful 68 066b7ed9SMichal Marek# for commands that shall be hidden in non-verbose mode. 69 066b7ed9SMichal Marek# 70 066b7ed9SMichal Marek# $(Q)ln $@ :< 71 066b7ed9SMichal Marek# 72 066b7ed9SMichal Marek# If KBUILD_VERBOSE equals 0 then the above command will be hidden. 73 066b7ed9SMichal Marek# If KBUILD_VERBOSE equals 1 then the above command is displayed. 74 505b12b3SRandy Dunlap# If KBUILD_VERBOSE equals 2 then give the reason why each target is rebuilt. 75 066b7ed9SMichal Marek# 76 1da177e4SLinus Torvalds# To put more focus on warnings, be less verbose as default 77 1da177e4SLinus Torvalds# Use 'make V=1' to see the full commands 78 1da177e4SLinus Torvalds 79 1da177e4SLinus Torvaldsifeq ("$(origin V)", "command line") 80 1da177e4SLinus Torvalds KBUILD_VERBOSE = $(V) 81 1da177e4SLinus Torvaldsendif 82 1da177e4SLinus Torvaldsifndef KBUILD_VERBOSE 83 1da177e4SLinus Torvalds KBUILD_VERBOSE = 0 84 1da177e4SLinus Torvaldsendif 85 1da177e4SLinus Torvalds 86 066b7ed9SMichal Marekifeq ($(KBUILD_VERBOSE),1) 87 066b7ed9SMichal Marek quiet = 88 066b7ed9SMichal Marek Q = 89 066b7ed9SMichal Marekelse 90 066b7ed9SMichal Marek quiet=quiet_ 91 066b7ed9SMichal Marek Q = @ 92 066b7ed9SMichal Marekendif 93 066b7ed9SMichal Marek 94 066b7ed9SMichal Marek# If the user is running make -s (silent mode), suppress echoing of 95 066b7ed9SMichal Marek# commands 96 066b7ed9SMichal Marek 97 6f0fa58eSMasahiro Yamadaifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) 98 066b7ed9SMichal Marek quiet=silent_ 99 066b7ed9SMichal Marekendif 100 066b7ed9SMichal Marek 101 066b7ed9SMichal Marekexport quiet Q KBUILD_VERBOSE 102 066b7ed9SMichal Marek 103 25b146c5SMasahiro Yamada# Kbuild will save output files in the current working directory. 104 25b146c5SMasahiro Yamada# This does not need to match to the root of the kernel source tree. 105 25b146c5SMasahiro Yamada# 106 25b146c5SMasahiro Yamada# For example, you can do this: 107 25b146c5SMasahiro Yamada# 108 25b146c5SMasahiro Yamada# cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile 109 25b146c5SMasahiro Yamada# 110 25b146c5SMasahiro Yamada# If you want to save output files in a different location, there are 111 25b146c5SMasahiro Yamada# two syntaxes to specify it. 112 25b146c5SMasahiro Yamada# 113 1da177e4SLinus Torvalds# 1) O= 114 1da177e4SLinus Torvalds# Use "make O=dir/to/store/output/files/" 115 1da177e4SLinus Torvalds# 116 1da177e4SLinus Torvalds# 2) Set KBUILD_OUTPUT 117 25b146c5SMasahiro Yamada# Set the environment variable KBUILD_OUTPUT to point to the output directory. 118 25b146c5SMasahiro Yamada# export KBUILD_OUTPUT=dir/to/store/output/files/; make 119 1da177e4SLinus Torvalds# 120 1da177e4SLinus Torvalds# The O= assignment takes precedence over the KBUILD_OUTPUT environment 121 1da177e4SLinus Torvalds# variable. 122 1da177e4SLinus Torvalds 123 25b146c5SMasahiro Yamada# Do we want to change the working directory? 124 1da177e4SLinus Torvaldsifeq ("$(origin O)", "command line") 125 1da177e4SLinus Torvalds KBUILD_OUTPUT := $(O) 126 1da177e4SLinus Torvaldsendif 127 1da177e4SLinus Torvalds 128 25b146c5SMasahiro Yamadaifneq ($(KBUILD_OUTPUT),) 129 25b146c5SMasahiro Yamada# Make's built-in functions such as $(abspath ...), $(realpath ...) cannot 130 25b146c5SMasahiro Yamada# expand a shell special character '~'. We use a somewhat tedious way here. 131 25b146c5SMasahiro Yamadaabs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) 132 25b146c5SMasahiro Yamada$(if $(abs_objtree),, \ 133 25b146c5SMasahiro Yamada $(error failed to create output directory "$(KBUILD_OUTPUT)")) 134 25b146c5SMasahiro Yamada 135 25b146c5SMasahiro Yamada# $(realpath ...) resolves symlinks 136 25b146c5SMasahiro Yamadaabs_objtree := $(realpath $(abs_objtree)) 137 25b146c5SMasahiro Yamadaelse 138 25b146c5SMasahiro Yamadaabs_objtree := $(CURDIR) 139 25b146c5SMasahiro Yamadaendif # ifneq ($(KBUILD_OUTPUT),) 140 25b146c5SMasahiro Yamada 141 25b146c5SMasahiro Yamadaifeq ($(abs_objtree),$(CURDIR)) 142 25b146c5SMasahiro Yamada# Suppress "Entering directory ..." unless we are changing the work directory. 143 25b146c5SMasahiro YamadaMAKEFLAGS += --no-print-directory 144 25b146c5SMasahiro Yamadaelse 145 25b146c5SMasahiro Yamadaneed-sub-make := 1 146 51193b76SRobert Jarzmikendif 147 51193b76SRobert Jarzmik 148 25b146c5SMasahiro Yamadaabs_srctree := $(realpath $(dir $(lastword $(MAKEFILE_LIST)))) 149 1da177e4SLinus Torvalds 150 25b146c5SMasahiro Yamadaifneq ($(words $(subst :, ,$(abs_srctree))), 1) 151 25b146c5SMasahiro Yamada$(error source directory cannot contain spaces or colons) 152 25b146c5SMasahiro Yamadaendif 153 25b146c5SMasahiro Yamada 154 25b146c5SMasahiro Yamadaifneq ($(abs_srctree),$(abs_objtree)) 155 80463f1bSMasahiro Yamada# Look for make include files relative to root of kernel src 156 80463f1bSMasahiro Yamada# 157 80463f1bSMasahiro Yamada# This does not become effective immediately because MAKEFLAGS is re-parsed 158 25b146c5SMasahiro Yamada# once after the Makefile is read. We need to invoke sub-make. 159 25b146c5SMasahiro YamadaMAKEFLAGS += --include-dir=$(abs_srctree) 160 688931a5SMasahiro Yamadaneed-sub-make := 1 161 25b146c5SMasahiro Yamadaendif 162 3812b8c5SMasahiro Yamada 163 93fdddfeSMasahiro Yamadathis-makefile := $(lastword $(MAKEFILE_LIST)) 164 93fdddfeSMasahiro Yamada 165 688931a5SMasahiro Yamadaifneq ($(filter 3.%,$(MAKE_VERSION)),) 166 688931a5SMasahiro Yamada# 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x 167 688931a5SMasahiro Yamada# We need to invoke sub-make to avoid implicit rules in the top Makefile. 168 688931a5SMasahiro Yamadaneed-sub-make := 1 169 688931a5SMasahiro Yamada# Cancel implicit rules for this Makefile. 170 93fdddfeSMasahiro Yamada$(this-makefile): ; 171 688931a5SMasahiro Yamadaendif 172 688931a5SMasahiro Yamada 173 25b146c5SMasahiro Yamadaexport abs_srctree abs_objtree 174 221cc2d2SMasahiro Yamadaexport sub_make_done := 1 175 221cc2d2SMasahiro Yamada 176 688931a5SMasahiro Yamadaifeq ($(need-sub-make),1) 177 688931a5SMasahiro Yamada 178 121c2a13SMasahiro YamadaPHONY += $(MAKECMDGOALS) __sub-make 179 0b35786dSMilton Miller 180 121c2a13SMasahiro Yamada$(filter-out $(this-makefile), $(MAKECMDGOALS)) __all: __sub-make 181 16f89098SCharles Keepax @: 182 0b35786dSMilton Miller 183 c4e6fff1SCao jin# Invoke a second make in the output directory, passing relevant variables 184 121c2a13SMasahiro Yamada__sub-make: 185 25b146c5SMasahiro Yamada $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS) 186 1da177e4SLinus Torvalds 187 688931a5SMasahiro Yamadaendif # need-sub-make 188 221cc2d2SMasahiro Yamadaendif # sub_make_done 189 688931a5SMasahiro Yamada 190 1da177e4SLinus Torvalds# We process the rest of the Makefile if this is the final invocation of make 191 688931a5SMasahiro Yamadaifeq ($(need-sub-make),) 192 1da177e4SLinus Torvalds 193 7ff52571SMasahiro Yamada# Do not print "Entering directory ...", 194 7ff52571SMasahiro Yamada# but we want to display it when entering to the output directory 195 7ff52571SMasahiro Yamada# so that IDEs/editors are able to understand relative filenames. 196 7ff52571SMasahiro YamadaMAKEFLAGS += --no-print-directory 197 7ff52571SMasahiro Yamada 198 aa55c8e2SMasahiro Yamada# Call a source code checker (by default, "sparse") as part of the 199 aa55c8e2SMasahiro Yamada# C compilation. 200 aa55c8e2SMasahiro Yamada# 201 aa55c8e2SMasahiro Yamada# Use 'make C=1' to enable checking of only re-compiled files. 202 aa55c8e2SMasahiro Yamada# Use 'make C=2' to enable checking of *all* source files, regardless 203 aa55c8e2SMasahiro Yamada# of whether they are re-compiled or not. 204 aa55c8e2SMasahiro Yamada# 205 036db11cSCao jin# See the file "Documentation/dev-tools/sparse.rst" for more details, 206 036db11cSCao jin# including where to get the "sparse" utility. 207 aa55c8e2SMasahiro Yamada 208 aa55c8e2SMasahiro Yamadaifeq ("$(origin C)", "command line") 209 aa55c8e2SMasahiro Yamada KBUILD_CHECKSRC = $(C) 210 aa55c8e2SMasahiro Yamadaendif 211 aa55c8e2SMasahiro Yamadaifndef KBUILD_CHECKSRC 212 aa55c8e2SMasahiro Yamada KBUILD_CHECKSRC = 0 213 aa55c8e2SMasahiro Yamadaendif 214 aa55c8e2SMasahiro Yamada 215 7e35b425SMasahiro Yamada# Use make M=dir or set the environment variable KBUILD_EXTMOD to specify the 216 7e35b425SMasahiro Yamada# directory of external module to build. Setting M= takes precedence. 217 aa55c8e2SMasahiro Yamadaifeq ("$(origin M)", "command line") 218 aa55c8e2SMasahiro Yamada KBUILD_EXTMOD := $(M) 219 aa55c8e2SMasahiro Yamadaendif 220 aa55c8e2SMasahiro Yamada 221 e9e81b63SMasahiro Yamada$(if $(word 2, $(KBUILD_EXTMOD)), \ 222 e9e81b63SMasahiro Yamada $(error building multiple external modules is not supported)) 223 e9e81b63SMasahiro Yamada 224 051f278eSMasahiro Yamadaexport KBUILD_CHECKSRC KBUILD_EXTMOD 225 051f278eSMasahiro Yamada 226 394053f4SMasahiro Yamadaextmod-prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/) 227 394053f4SMasahiro Yamada 228 25b146c5SMasahiro Yamadaifeq ($(abs_srctree),$(abs_objtree)) 229 9da0763bSMichal Marek # building in the source tree 230 9da0763bSMichal Marek srctree := . 231 051f278eSMasahiro Yamada building_out_of_srctree := 232 9da0763bSMichal Marekelse 233 25b146c5SMasahiro Yamada ifeq ($(abs_srctree)/,$(dir $(abs_objtree))) 234 9da0763bSMichal Marek # building in a subdirectory of the source tree 235 9da0763bSMichal Marek srctree := .. 236 9da0763bSMichal Marek else 237 25b146c5SMasahiro Yamada srctree := $(abs_srctree) 238 9da0763bSMichal Marek endif 239 051f278eSMasahiro Yamada building_out_of_srctree := 1 240 9da0763bSMichal Marekendif 241 2c1f4f12SMasahiro Yamada 242 95fd3f87SMasahiro Yamadaifneq ($(KBUILD_ABS_SRCTREE),) 243 95fd3f87SMasahiro Yamadasrctree := $(abs_srctree) 244 95fd3f87SMasahiro Yamadaendif 245 2c1f4f12SMasahiro Yamada 246 7e1c0477SMichal Marekobjtree := . 247 6b12de69SMasahiro YamadaVPATH := $(srctree) 248 1da177e4SLinus Torvalds 249 051f278eSMasahiro Yamadaexport building_out_of_srctree srctree objtree VPATH 250 1da177e4SLinus Torvalds 251 2c1f4f12SMasahiro Yamada# To make sure we do not include .config for any of the *config targets 252 2c1f4f12SMasahiro Yamada# catch them early, and hand them over to scripts/kconfig/Makefile 253 2c1f4f12SMasahiro Yamada# It is allowed to specify more targets when calling make, including 254 2c1f4f12SMasahiro Yamada# mixing *config targets and build targets. 255 2c1f4f12SMasahiro Yamada# For example 'make oldconfig all'. 256 2c1f4f12SMasahiro Yamada# Detect when mixed targets is specified, and make a second invocation 257 2c1f4f12SMasahiro Yamada# of make so .config is not included in this case either (for *config). 258 2c1f4f12SMasahiro Yamada 259 2c1f4f12SMasahiro Yamadaversion_h := include/generated/uapi/linux/version.h 260 2c1f4f12SMasahiro Yamadaold_version_h := include/linux/version.h 261 2c1f4f12SMasahiro Yamada 262 22340a06SMasahiro Yamadaclean-targets := %clean mrproper cleandocs 263 22340a06SMasahiro Yamadano-dot-config-targets := $(clean-targets) \ 264 2c1f4f12SMasahiro Yamada cscope gtags TAGS tags help% %docs check% coccicheck \ 265 59b2bd05SMasahiro Yamada $(version_h) headers headers_% archheaders archscripts \ 266 4623980dSDavid Engraf %asm-generic kernelversion %src-pkg dt_binding_check \ 267 4623980dSDavid Engraf outputmakefile 268 a29d4d8cSMasahiro Yamadano-sync-config-targets := $(no-dot-config-targets) install %install \ 269 a29d4d8cSMasahiro Yamada kernelrelease 270 394053f4SMasahiro Yamadasingle-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/ 271 2c1f4f12SMasahiro Yamada 272 2042b548SMasahiro Yamadaconfig-build := 273 2042b548SMasahiro Yamadamixed-build := 274 2042b548SMasahiro Yamadaneed-config := 1 275 d7942413SMasahiro Yamadamay-sync-config := 1 276 394053f4SMasahiro Yamadasingle-build := 277 2c1f4f12SMasahiro Yamada 278 2c1f4f12SMasahiro Yamadaifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 279 2c1f4f12SMasahiro Yamada ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 280 2042b548SMasahiro Yamada need-config := 281 2c1f4f12SMasahiro Yamada endif 282 2c1f4f12SMasahiro Yamadaendif 283 2c1f4f12SMasahiro Yamada 284 d7942413SMasahiro Yamadaifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) 285 d7942413SMasahiro Yamada ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) 286 2042b548SMasahiro Yamada may-sync-config := 287 d7942413SMasahiro Yamada endif 288 d7942413SMasahiro Yamadaendif 289 d7942413SMasahiro Yamada 290 d7942413SMasahiro Yamadaifneq ($(KBUILD_EXTMOD),) 291 2042b548SMasahiro Yamada may-sync-config := 292 d7942413SMasahiro Yamadaendif 293 d7942413SMasahiro Yamada 294 2c1f4f12SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 295 2c1f4f12SMasahiro Yamada ifneq ($(filter config %config,$(MAKECMDGOALS)),) 296 2042b548SMasahiro Yamada config-build := 1 297 2c1f4f12SMasahiro Yamada ifneq ($(words $(MAKECMDGOALS)),1) 298 2042b548SMasahiro Yamada mixed-build := 1 299 2c1f4f12SMasahiro Yamada endif 300 2c1f4f12SMasahiro Yamada endif 301 2c1f4f12SMasahiro Yamadaendif 302 22340a06SMasahiro Yamada 303 394053f4SMasahiro Yamada# We cannot build single targets and the others at the same time 304 394053f4SMasahiro Yamadaifneq ($(filter $(single-targets), $(MAKECMDGOALS)),) 305 394053f4SMasahiro Yamada single-build := 1 306 394053f4SMasahiro Yamada ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),) 307 394053f4SMasahiro Yamada mixed-build := 1 308 394053f4SMasahiro Yamada endif 309 394053f4SMasahiro Yamadaendif 310 394053f4SMasahiro Yamada 311 22340a06SMasahiro Yamada# For "make -j clean all", "make -j mrproper defconfig all", etc. 312 22340a06SMasahiro Yamadaifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 313 22340a06SMasahiro Yamada ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 314 2042b548SMasahiro Yamada mixed-build := 1 315 22340a06SMasahiro Yamada endif 316 22340a06SMasahiro Yamadaendif 317 22340a06SMasahiro Yamada 318 2c1f4f12SMasahiro Yamada# install and modules_install need also be processed one by one 319 2c1f4f12SMasahiro Yamadaifneq ($(filter install,$(MAKECMDGOALS)),) 320 2c1f4f12SMasahiro Yamada ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 321 2042b548SMasahiro Yamada mixed-build := 1 322 2c1f4f12SMasahiro Yamada endif 323 2c1f4f12SMasahiro Yamadaendif 324 2c1f4f12SMasahiro Yamada 325 2042b548SMasahiro Yamadaifdef mixed-build 326 2c1f4f12SMasahiro Yamada# =========================================================================== 327 2c1f4f12SMasahiro Yamada# We're called with mixed targets (*config and build targets). 328 2c1f4f12SMasahiro Yamada# Handle them one by one. 329 2c1f4f12SMasahiro Yamada 330 2c1f4f12SMasahiro YamadaPHONY += $(MAKECMDGOALS) __build_one_by_one 331 2c1f4f12SMasahiro Yamada 332 121c2a13SMasahiro Yamada$(MAKECMDGOALS): __build_one_by_one 333 2c1f4f12SMasahiro Yamada @: 334 2c1f4f12SMasahiro Yamada 335 2c1f4f12SMasahiro Yamada__build_one_by_one: 336 2c1f4f12SMasahiro Yamada $(Q)set -e; \ 337 2c1f4f12SMasahiro Yamada for i in $(MAKECMDGOALS); do \ 338 2c1f4f12SMasahiro Yamada $(MAKE) -f $(srctree)/Makefile $$i; \ 339 2c1f4f12SMasahiro Yamada done 340 2c1f4f12SMasahiro Yamada 341 2042b548SMasahiro Yamadaelse # !mixed-build 342 2c1f4f12SMasahiro Yamada 343 2c1f4f12SMasahiro Yamadainclude scripts/Kbuild.include 344 2c1f4f12SMasahiro Yamada 345 2c1f4f12SMasahiro Yamada# Read KERNELRELEASE from include/config/kernel.release (if it exists) 346 2c1f4f12SMasahiro YamadaKERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 347 2c1f4f12SMasahiro YamadaKERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 348 2c1f4f12SMasahiro Yamadaexport VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 349 2c1f4f12SMasahiro Yamada 350 b2d35fa5SAnders Roxellinclude scripts/subarch.include 351 1da177e4SLinus Torvalds 352 1da177e4SLinus Torvalds# Cross compiling and selecting different set of gcc/bin-utils 353 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 354 1da177e4SLinus Torvalds# 355 1da177e4SLinus Torvalds# When performing cross compilation for other architectures ARCH shall be set 356 1da177e4SLinus Torvalds# to the target architecture. (See arch/* for the possibilities). 357 1da177e4SLinus Torvalds# ARCH can be set during invocation of make: 358 1da177e4SLinus Torvalds# make ARCH=ia64 359 1da177e4SLinus Torvalds# Another way is to have ARCH set in the environment. 360 1da177e4SLinus Torvalds# The default ARCH is the host where make is executed. 361 1da177e4SLinus Torvalds 362 1da177e4SLinus Torvalds# CROSS_COMPILE specify the prefix used for all executables used 363 1da177e4SLinus Torvalds# during compilation. Only gcc and related bin-utils executables 364 1da177e4SLinus Torvalds# are prefixed with $(CROSS_COMPILE). 365 1da177e4SLinus Torvalds# CROSS_COMPILE can be set on the command line 366 1da177e4SLinus Torvalds# make CROSS_COMPILE=ia64-linux- 367 1da177e4SLinus Torvalds# Alternatively CROSS_COMPILE can be set in the environment. 368 1da177e4SLinus Torvalds# Default value for CROSS_COMPILE is not to prefix executables 369 1da177e4SLinus Torvalds# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 370 2331d1a6SSam RavnborgARCH ?= $(SUBARCH) 371 1da177e4SLinus Torvalds 372 1da177e4SLinus Torvalds# Architecture as present in compile.h 373 1da177e4SLinus TorvaldsUTS_MACHINE := $(ARCH) 374 6752ed90SThomas GleixnerSRCARCH := $(ARCH) 375 1da177e4SLinus Torvalds 376 d746d647SSam Ravnborg# Additional ARCH settings for x86 377 d746d647SSam Ravnborgifeq ($(ARCH),i386) 378 d746d647SSam Ravnborg SRCARCH := x86 379 d746d647SSam Ravnborgendif 380 d746d647SSam Ravnborgifeq ($(ARCH),x86_64) 381 d746d647SSam Ravnborg SRCARCH := x86 382 d746d647SSam Ravnborgendif 383 74b469f2SSam Ravnborg 384 5e538790SSam Ravnborg# Additional ARCH settings for sparc 385 e69f58c0SNamhyung Kimifeq ($(ARCH),sparc32) 386 e69f58c0SNamhyung Kim SRCARCH := sparc 387 e69f58c0SNamhyung Kimendif 388 a439fe51SSam Ravnborgifeq ($(ARCH),sparc64) 389 5e538790SSam Ravnborg SRCARCH := sparc 390 a439fe51SSam Ravnborgendif 391 2fb9b1bdSSam Ravnborg 392 3cc000b5SPaul Mundt# Additional ARCH settings for sh 393 3cc000b5SPaul Mundtifeq ($(ARCH),sh64) 394 3cc000b5SPaul Mundt SRCARCH := sh 395 3cc000b5SPaul Mundtendif 396 3cc000b5SPaul Mundt 397 14cdd3c4SRoman ZippelKCONFIG_CONFIG ?= .config 398 41263fc6SBen Gardinerexport KCONFIG_CONFIG 399 14cdd3c4SRoman Zippel 400 2a86f661SMasahiro Yamada# Default file for 'make defconfig'. This may be overridden by arch-Makefile. 401 2a86f661SMasahiro Yamadaexport KBUILD_DEFCONFIG := defconfig 402 2a86f661SMasahiro Yamada 403 1da177e4SLinus Torvalds# SHELL used by kbuild 404 858805b3SMasahiro YamadaCONFIG_SHELL := sh 405 1da177e4SLinus Torvalds 406 6d79a7b4SMasahiro YamadaHOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 407 6d79a7b4SMasahiro YamadaHOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 408 6d79a7b4SMasahiro YamadaHOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 409 d7f14c66SUwe Kleine-König 410 a0d1c951SMasahiro Yamadaifneq ($(LLVM),) 411 a0d1c951SMasahiro YamadaHOSTCC = clang 412 a0d1c951SMasahiro YamadaHOSTCXX = clang++ 413 a0d1c951SMasahiro Yamadaelse 414 1da177e4SLinus TorvaldsHOSTCC = gcc 415 1da177e4SLinus TorvaldsHOSTCXX = g++ 416 a0d1c951SMasahiro Yamadaendif 417 7f3a59dbSMasahiro Yamada 418 7f3a59dbSMasahiro Yamadaexport KBUILD_USERCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \ 419 7f3a59dbSMasahiro Yamada -O2 -fomit-frame-pointer -std=gnu89 420 7f3a59dbSMasahiro Yamadaexport KBUILD_USERLDFLAGS := 421 7f3a59dbSMasahiro Yamada 422 7f3a59dbSMasahiro YamadaKBUILD_HOSTCFLAGS := $(KBUILD_USERCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS) 423 735aab1eSMasahiro YamadaKBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 424 f92d19e0SLaura AbbottKBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 425 f92d19e0SLaura AbbottKBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 426 1da177e4SLinus Torvalds 427 1da177e4SLinus Torvalds# Make variables (CC, etc...) 428 1da177e4SLinus TorvaldsCPP = $(CC) -E 429 a0d1c951SMasahiro Yamadaifneq ($(LLVM),) 430 a0d1c951SMasahiro YamadaCC = clang 431 a0d1c951SMasahiro YamadaLD = ld.lld 432 a0d1c951SMasahiro YamadaAR = llvm-ar 433 a0d1c951SMasahiro YamadaNM = llvm-nm 434 a0d1c951SMasahiro YamadaOBJCOPY = llvm-objcopy 435 a0d1c951SMasahiro YamadaOBJDUMP = llvm-objdump 436 a0d1c951SMasahiro YamadaREADELF = llvm-readelf 437 a0d1c951SMasahiro YamadaOBJSIZE = llvm-size 438 a0d1c951SMasahiro YamadaSTRIP = llvm-strip 439 a0d1c951SMasahiro Yamadaelse 440 a0d1c951SMasahiro YamadaCC = $(CROSS_COMPILE)gcc 441 a0d1c951SMasahiro YamadaLD = $(CROSS_COMPILE)ld 442 1da177e4SLinus TorvaldsAR = $(CROSS_COMPILE)ar 443 1da177e4SLinus TorvaldsNM = $(CROSS_COMPILE)nm 444 1da177e4SLinus TorvaldsOBJCOPY = $(CROSS_COMPILE)objcopy 445 1da177e4SLinus TorvaldsOBJDUMP = $(CROSS_COMPILE)objdump 446 eefb8c12SDmitry GolovinREADELF = $(CROSS_COMPILE)readelf 447 a0d1c951SMasahiro YamadaOBJSIZE = $(CROSS_COMPILE)size 448 a0d1c951SMasahiro YamadaSTRIP = $(CROSS_COMPILE)strip 449 a0d1c951SMasahiro Yamadaendif 450 e83b9f55SAndrii NakryikoPAHOLE = pahole 451 73a4f6dbSMasahiro YamadaLEX = flex 452 73a4f6dbSMasahiro YamadaYACC = bison 453 1da177e4SLinus TorvaldsAWK = awk 454 caa27b66SSam RavnborgINSTALLKERNEL := installkernel 455 1da177e4SLinus TorvaldsDEPMOD = /sbin/depmod 456 1da177e4SLinus TorvaldsPERL = perl 457 011bf125SMasahiro YamadaPYTHON = python 458 e9781b52SMasahiro YamadaPYTHON3 = python3 459 1da177e4SLinus TorvaldsCHECK = sparse 460 858805b3SMasahiro YamadaBASH = bash 461 *8dfb61dcSDenis EfremovGZIP = gzip 462 *8dfb61dcSDenis EfremovBZIP2 = bzip2 463 *8dfb61dcSDenis EfremovLZOP = lzop 464 *8dfb61dcSDenis EfremovLZMA = lzma 465 *8dfb61dcSDenis EfremovLZ4 = lz4c 466 *8dfb61dcSDenis EfremovXZ = xz 467 *8dfb61dcSDenis Efremov 468 *8dfb61dcSDenis Efremov# GZIP, BZIP2, LZOP env vars are used by the tools. Support them as the command 469 *8dfb61dcSDenis Efremov# line interface, but use _GZIP, _BZIP2, _LZOP internally. 470 *8dfb61dcSDenis Efremov_GZIP := $(GZIP) 471 *8dfb61dcSDenis Efremov_BZIP2 := $(BZIP2) 472 *8dfb61dcSDenis Efremov_LZOP := $(LZOP) 473 *8dfb61dcSDenis Efremov 474 *8dfb61dcSDenis Efremov# Reset GZIP, BZIP2, LZOP in this Makefile 475 *8dfb61dcSDenis Efremovoverride GZIP= 476 *8dfb61dcSDenis Efremovoverride BZIP2= 477 *8dfb61dcSDenis Efremovoverride LZOP= 478 *8dfb61dcSDenis Efremov 479 *8dfb61dcSDenis Efremov# Reset GZIP, BZIP2, LZOP in recursive invocations 480 *8dfb61dcSDenis EfremovMAKEOVERRIDES += GZIP= BZIP2= LZOP= 481 1da177e4SLinus Torvalds 482 80a7d1d9SHannes EderCHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 483 6c49f359SLuc Van Oostenryck -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 484 0c22be07SDouglas AndersonNOSTDINC_FLAGS := 485 6588169dSSam RavnborgCFLAGS_MODULE = 486 6588169dSSam RavnborgAFLAGS_MODULE = 487 6588169dSSam RavnborgLDFLAGS_MODULE = 488 1da177e4SLinus TorvaldsCFLAGS_KERNEL = 489 1da177e4SLinus TorvaldsAFLAGS_KERNEL = 490 b36fad65SMichal MarekLDFLAGS_vmlinux = 491 1da177e4SLinus Torvalds 492 abbf1590SDavid Howells# Use USERINCLUDE when you must reference the UAPI directories only. 493 abbf1590SDavid HowellsUSERINCLUDE := \ 494 9d022c54SMasahiro Yamada -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 495 9d022c54SMasahiro Yamada -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 496 abbf1590SDavid Howells -I$(srctree)/include/uapi \ 497 3308b285SArnd Bergmann -I$(objtree)/include/generated/uapi \ 498 abbf1590SDavid Howells -include $(srctree)/include/linux/kconfig.h 499 abbf1590SDavid Howells 500 1da177e4SLinus Torvalds# Use LINUXINCLUDE when you must reference the include/ directory. 501 1da177e4SLinus Torvalds# Needed to be compatible with the O= option 502 abbf1590SDavid HowellsLINUXINCLUDE := \ 503 9d022c54SMasahiro Yamada -I$(srctree)/arch/$(SRCARCH)/include \ 504 9d022c54SMasahiro Yamada -I$(objtree)/arch/$(SRCARCH)/include/generated \ 505 051f278eSMasahiro Yamada $(if $(building_out_of_srctree),-I$(srctree)/include) \ 506 f8224f7fSMasahiro Yamada -I$(objtree)/include \ 507 f8224f7fSMasahiro Yamada $(USERINCLUDE) 508 1da177e4SLinus Torvalds 509 42a92bccSMasahiro YamadaKBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 510 eeb5687aSMasahiro YamadaKBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ 511 42a92bccSMasahiro Yamada -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ 512 b89f25eaSLuc Van Oostenryck -Werror=implicit-function-declaration -Werror=implicit-int \ 513 51b97e35SKirill A. Shutemov -Wno-format-security \ 514 433dc2ebSMasahiro Yamada -std=gnu89 515 433dc2ebSMasahiro YamadaKBUILD_CPPFLAGS := -D__KERNEL__ 516 80c00ba9SSam RavnborgKBUILD_AFLAGS_KERNEL := 517 80c00ba9SSam RavnborgKBUILD_CFLAGS_KERNEL := 518 6588169dSSam RavnborgKBUILD_AFLAGS_MODULE := -DMODULE 519 6588169dSSam RavnborgKBUILD_CFLAGS_MODULE := -DMODULE 520 10df0638SMasahiro YamadaKBUILD_LDFLAGS_MODULE := 521 10df0638SMasahiro Yamadaexport KBUILD_LDS_MODULE := $(srctree)/scripts/module-common.lds 522 d503ac53SMasahiro YamadaKBUILD_LDFLAGS := 523 433dc2ebSMasahiro YamadaGCC_PLUGINS_CFLAGS := 524 5241ab4cSMasahiro YamadaCLANG_FLAGS := 525 1da177e4SLinus Torvalds 526 aa824e0cSMasahiro Yamadaexport ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC 527 eefb8c12SDmitry Golovinexport CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF PAHOLE LEX YACC AWK INSTALLKERNEL 528 94f7345bSMasahiro Yamadaexport PERL PYTHON PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX 529 *8dfb61dcSDenis Efremovexport _GZIP _BZIP2 _LZOP LZMA LZ4 XZ 530 7bac9870SVasily Gorbikexport KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE 531 1da177e4SLinus Torvalds 532 d503ac53SMasahiro Yamadaexport KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 533 0e410e15SAndrey Konovalovexport KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 534 0e410e15SAndrey Konovalovexport CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN 535 222d394dSSam Ravnborgexport KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 536 6588169dSSam Ravnborgexport KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 537 80c00ba9SSam Ravnborgexport KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 538 1da177e4SLinus Torvalds 539 1da177e4SLinus Torvalds# Files to ignore in find ... statements 540 1da177e4SLinus Torvalds 541 ae63b2d7SPrarit Bhargavaexport RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 542 ae63b2d7SPrarit Bhargava -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 543 ae63b2d7SPrarit Bhargava -prune -o 544 450c6076SJesper Juhlexport RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 545 450c6076SJesper Juhl --exclude CVS --exclude .pc --exclude .hg --exclude .git 546 1da177e4SLinus Torvalds 547 1da177e4SLinus Torvalds# =========================================================================== 548 1da177e4SLinus Torvalds# Rules shared between *config targets and build targets 549 1da177e4SLinus Torvalds 550 312a3d09SCao jin# Basic helpers built in scripts/basic/ 551 4f193362SPaul SmithPHONY += scripts_basic 552 1da177e4SLinus Torvaldsscripts_basic: 553 1da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/basic 554 638adb05SSteven Rostedt $(Q)rm -f .tmp_quiet_recordmcount 555 1da177e4SLinus Torvalds 556 4f193362SPaul SmithPHONY += outputmakefile 557 e8e83a23SMasahiro Yamada# Before starting out-of-tree build, make sure the source tree is clean. 558 fd5f0cd6SJan Beulich# outputmakefile generates a Makefile in the output directory, if using a 559 fd5f0cd6SJan Beulich# separate output directory. This allows convenient use of make in the 560 fd5f0cd6SJan Beulich# output directory. 561 3a51ff34SVladimir Kondratiev# At the same time when output Makefile generated, generate .gitignore to 562 3a51ff34SVladimir Kondratiev# ignore whole output directory 563 1da177e4SLinus Torvaldsoutputmakefile: 564 051f278eSMasahiro Yamadaifdef building_out_of_srctree 565 e8e83a23SMasahiro Yamada $(Q)if [ -f $(srctree)/.config -o \ 566 e8e83a23SMasahiro Yamada -d $(srctree)/include/config -o \ 567 e8e83a23SMasahiro Yamada -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \ 568 e8e83a23SMasahiro Yamada echo >&2 "***"; \ 569 e8e83a23SMasahiro Yamada echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \ 570 e8e83a23SMasahiro Yamada echo >&2 "*** in $(abs_srctree)";\ 571 e8e83a23SMasahiro Yamada echo >&2 "***"; \ 572 e8e83a23SMasahiro Yamada false; \ 573 e8e83a23SMasahiro Yamada fi 574 92979997SAndi Kleen $(Q)ln -fsn $(srctree) source 575 4fd61277SMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) 576 156e7cbbSMasahiro Yamada $(Q)test -e .gitignore || \ 577 156e7cbbSMasahiro Yamada { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore 578 fd5f0cd6SJan Beulichendif 579 1da177e4SLinus Torvalds 580 99516742SMasahiro Yamadaifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),) 581 ae6b289aSChris Friesifneq ($(CROSS_COMPILE),) 582 5241ab4cSMasahiro YamadaCLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) 583 ad15006cSNick DesaulniersGCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) 584 238bcbc4SMasahiro YamadaCLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR) 585 ef8c4ed9SStefan AgnerGCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) 586 ae6b289aSChris Friesendif 587 ae6b289aSChris Friesifneq ($(GCC_TOOLCHAIN),) 588 238bcbc4SMasahiro YamadaCLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN) 589 ae6b289aSChris Friesendif 590 7e20e47cSMasahiro Yamadaifneq ($(LLVM_IAS),1) 591 238bcbc4SMasahiro YamadaCLANG_FLAGS += -no-integrated-as 592 876a0600SNathan Chancellorendif 593 589834b3SNathan ChancellorCLANG_FLAGS += -Werror=unknown-warning-option 594 238bcbc4SMasahiro YamadaKBUILD_CFLAGS += $(CLANG_FLAGS) 595 238bcbc4SMasahiro YamadaKBUILD_AFLAGS += $(CLANG_FLAGS) 596 3bd98050SJoel Stanleyexport CLANG_FLAGS 597 ae6b289aSChris Friesendif 598 ae6b289aSChris Fries 599 315bab4eSMasahiro Yamada# The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 600 315bab4eSMasahiro Yamada# Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 601 315bab4eSMasahiro Yamada# CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 602 315bab4eSMasahiro Yamada# and from include/config/auto.conf.cmd to detect the compiler upgrade. 603 902a6898SMasahiro YamadaCC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1) 604 315bab4eSMasahiro Yamada 605 2042b548SMasahiro Yamadaifdef config-build 606 1da177e4SLinus Torvalds# =========================================================================== 607 1da177e4SLinus Torvalds# *config targets only - make sure prerequisites are updated, and descend 608 1da177e4SLinus Torvalds# in scripts/kconfig to make the *config target 609 1da177e4SLinus Torvalds 610 1da177e4SLinus Torvalds# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 611 1da177e4SLinus Torvalds# KBUILD_DEFCONFIG may point out an alternative default configuration 612 1da177e4SLinus Torvalds# used for 'make defconfig' 613 a436bb7bSMasahiro Yamadainclude arch/$(SRCARCH)/Makefile 614 315bab4eSMasahiro Yamadaexport KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 615 1da177e4SLinus Torvalds 616 36de077bSMasahiro Yamadaconfig: outputmakefile scripts_basic FORCE 617 31110ebbSSam Ravnborg $(Q)$(MAKE) $(build)=scripts/kconfig $@ 618 31110ebbSSam Ravnborg 619 36de077bSMasahiro Yamada%config: outputmakefile scripts_basic FORCE 620 1da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/kconfig $@ 621 1da177e4SLinus Torvalds 622 2042b548SMasahiro Yamadaelse #!config-build 623 1da177e4SLinus Torvalds# =========================================================================== 624 1da177e4SLinus Torvalds# Build targets only - this includes vmlinux, arch specific targets, clean 625 1da177e4SLinus Torvalds# targets and others. In general all targets except *config targets. 626 1da177e4SLinus Torvalds 627 2c1f4f12SMasahiro Yamada# If building an external module we do not care about the all: rule 628 121c2a13SMasahiro Yamada# but instead __all depend on modules 629 2c1f4f12SMasahiro YamadaPHONY += all 630 2c1f4f12SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 631 121c2a13SMasahiro Yamada__all: all 632 2c1f4f12SMasahiro Yamadaelse 633 121c2a13SMasahiro Yamada__all: modules 634 2c1f4f12SMasahiro Yamadaendif 635 2c1f4f12SMasahiro Yamada 636 2c1f4f12SMasahiro Yamada# Decide whether to build built-in, modular, or both. 637 2c1f4f12SMasahiro Yamada# Normally, just do built-in. 638 2c1f4f12SMasahiro Yamada 639 2c1f4f12SMasahiro YamadaKBUILD_MODULES := 640 2c1f4f12SMasahiro YamadaKBUILD_BUILTIN := 1 641 2c1f4f12SMasahiro Yamada 642 2c1f4f12SMasahiro Yamada# If we have only "make modules", don't compile built-in objects. 643 2c1f4f12SMasahiro Yamadaifeq ($(MAKECMDGOALS),modules) 644 4b50c8c4SMasahiro Yamada KBUILD_BUILTIN := 645 2c1f4f12SMasahiro Yamadaendif 646 2c1f4f12SMasahiro Yamada 647 2c1f4f12SMasahiro Yamada# If we have "make <whatever> modules", compile modules 648 2c1f4f12SMasahiro Yamada# in addition to whatever we do anyway. 649 2c1f4f12SMasahiro Yamada# Just "make" or "make all" shall build modules as well 650 2c1f4f12SMasahiro Yamada 651 121c2a13SMasahiro Yamadaifneq ($(filter all modules nsdeps,$(MAKECMDGOALS)),) 652 2c1f4f12SMasahiro Yamada KBUILD_MODULES := 1 653 2c1f4f12SMasahiro Yamadaendif 654 2c1f4f12SMasahiro Yamada 655 2c1f4f12SMasahiro Yamadaifeq ($(MAKECMDGOALS),) 656 2c1f4f12SMasahiro Yamada KBUILD_MODULES := 1 657 2c1f4f12SMasahiro Yamadaendif 658 2c1f4f12SMasahiro Yamada 659 2c1f4f12SMasahiro Yamadaexport KBUILD_MODULES KBUILD_BUILTIN 660 2c1f4f12SMasahiro Yamada 661 2042b548SMasahiro Yamadaifdef need-config 662 d93a18f2SMasahiro Yamadainclude include/config/auto.conf 663 d93a18f2SMasahiro Yamadaendif 664 d93a18f2SMasahiro Yamada 665 1da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 666 1da177e4SLinus Torvalds# Objects we will link into vmlinux / subdirs we need to visit 667 23febe37SMasahiro Yamadacore-y := init/ usr/ 668 f96182e9SMasahiro Yamadadrivers-y := drivers/ sound/ 669 d93a18f2SMasahiro Yamadadrivers-$(CONFIG_SAMPLES) += samples/ 670 95fb6317SMasahiro Yamadadrivers-y += net/ virt/ 671 1da177e4SLinus Torvaldslibs-y := lib/ 672 1da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 673 1da177e4SLinus Torvalds 674 315bab4eSMasahiro Yamada# The all: target is the default when no target is given on the 675 315bab4eSMasahiro Yamada# command line. 676 315bab4eSMasahiro Yamada# This allow a user to issue only 'make' to build a kernel including modules 677 315bab4eSMasahiro Yamada# Defaults to vmlinux, but the arch makefile usually adds further targets 678 315bab4eSMasahiro Yamadaall: vmlinux 679 315bab4eSMasahiro Yamada 680 315bab4eSMasahiro YamadaCFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ 681 315bab4eSMasahiro Yamada $(call cc-option,-fno-tree-loop-im) \ 682 315bab4eSMasahiro Yamada $(call cc-disable-warning,maybe-uninitialized,) 683 5aadfdebSMasahiro Yamadaexport CFLAGS_GCOV 684 315bab4eSMasahiro Yamada 685 b1f4ff74SPaulo Zanoni# The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. 686 b1f4ff74SPaulo Zanoniifdef CONFIG_FUNCTION_TRACER 687 b1f4ff74SPaulo Zanoni CC_FLAGS_FTRACE := -pg 688 b1f4ff74SPaulo Zanoniendif 689 b1f4ff74SPaulo Zanoni 690 669e06b1SMasahiro YamadaRETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register 691 669e06b1SMasahiro YamadaRETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register 692 669e06b1SMasahiro YamadaRETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk 693 669e06b1SMasahiro YamadaRETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline 694 669e06b1SMasahiro YamadaRETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG))) 695 669e06b1SMasahiro YamadaRETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG))) 696 669e06b1SMasahiro Yamadaexport RETPOLINE_CFLAGS 697 669e06b1SMasahiro Yamadaexport RETPOLINE_VDSO_CFLAGS 698 669e06b1SMasahiro Yamada 699 315bab4eSMasahiro Yamadainclude arch/$(SRCARCH)/Makefile 700 315bab4eSMasahiro Yamada 701 2042b548SMasahiro Yamadaifdef need-config 702 2042b548SMasahiro Yamadaifdef may-sync-config 703 315bab4eSMasahiro Yamada# Read in dependencies to all Kconfig* files, make sure to run syncconfig if 704 315bab4eSMasahiro Yamada# changes are detected. This should be included after arch/$(SRCARCH)/Makefile 705 315bab4eSMasahiro Yamada# because some architectures define CROSS_COMPILE there. 706 d2f8ae0eSMasahiro Yamadainclude include/config/auto.conf.cmd 707 1da177e4SLinus Torvalds 708 05850719SMasahiro Yamada$(KCONFIG_CONFIG): 709 05850719SMasahiro Yamada @echo >&2 '***' 710 05850719SMasahiro Yamada @echo >&2 '*** Configuration file "$@" not found!' 711 05850719SMasahiro Yamada @echo >&2 '***' 712 05850719SMasahiro Yamada @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or' 713 05850719SMasahiro Yamada @echo >&2 '*** "make menuconfig" or "make xconfig").' 714 05850719SMasahiro Yamada @echo >&2 '***' 715 05850719SMasahiro Yamada @/bin/false 716 1da177e4SLinus Torvalds 717 61277981SUlf Magnusson# The actual configuration files used during the build are stored in 718 61277981SUlf Magnusson# include/generated/ and include/config/. Update them if .config is newer than 719 61277981SUlf Magnusson# include/config/auto.conf (which mirrors .config). 720 9390dff6SMasahiro Yamada# 721 9390dff6SMasahiro Yamada# This exploits the 'multi-target pattern rule' trick. 722 9390dff6SMasahiro Yamada# The syncconfig should be executed only once to make all the targets. 723 f463c351SMasahiro Yamada# (Note: use the grouped target '&:' when we bump to GNU Make 4.3) 724 3044dd05SMasahiro Yamada%/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h: $(KCONFIG_CONFIG) 725 911a91c3SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 726 2042b548SMasahiro Yamadaelse # !may-sync-config 727 d7942413SMasahiro Yamada# External modules and some install targets need include/generated/autoconf.h 728 d7942413SMasahiro Yamada# and include/config/auto.conf but do not care if they are up-to-date. 729 d7942413SMasahiro Yamada# Use auto.conf to trigger the test 730 9ee4e336SSam RavnborgPHONY += include/config/auto.conf 731 9ee4e336SSam Ravnborg 732 9ee4e336SSam Ravnborginclude/config/auto.conf: 733 264a2683SSam Ravnborg $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 734 5369f550SMichal Marek echo >&2; \ 735 5369f550SMichal Marek echo >&2 " ERROR: Kernel configuration is invalid."; \ 736 5369f550SMichal Marek echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 737 5369f550SMichal Marek echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 738 5369f550SMichal Marek echo >&2 ; \ 739 9ee4e336SSam Ravnborg /bin/false) 740 9ee4e336SSam Ravnborg 741 d7942413SMasahiro Yamadaendif # may-sync-config 742 2042b548SMasahiro Yamadaendif # need-config 743 1da177e4SLinus Torvalds 744 a1c48bb1SGeert UytterhoevenKBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) 745 ef6000b4SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) 746 bd664f6bSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) 747 bd664f6bSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) 748 6f303d60SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 749 a1c48bb1SGeert Uytterhoeven 750 15f5db60SMasahiro Yamadaifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 751 a0f97e06SSam RavnborgKBUILD_CFLAGS += -O2 752 15f5db60SMasahiro Yamadaelse ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 753 15f5db60SMasahiro YamadaKBUILD_CFLAGS += -O3 754 15f5db60SMasahiro Yamadaelse ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 755 15f5db60SMasahiro YamadaKBUILD_CFLAGS += -Os 756 1da177e4SLinus Torvaldsendif 757 1da177e4SLinus Torvalds 758 69102311SJiri Kosina# Tell gcc to never replace conditional load with a non-conditional one 759 69102311SJiri KosinaKBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 760 b1112139SSergei TrofimovichKBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) 761 69102311SJiri Kosina 762 d677a4d6SVictor Chibotaruinclude scripts/Makefile.kcov 763 6b90bd4bSEmese Revfyinclude scripts/Makefile.gcc-plugins 764 6b90bd4bSEmese Revfy 765 1873e870SAndi Kleenifdef CONFIG_READABLE_ASM 766 1873e870SAndi Kleen# Disable optimizations that make assembler listings hard to read. 767 1873e870SAndi Kleen# reorder blocks reorders the control in the function 768 1873e870SAndi Kleen# ipa clone creates specialized cloned functions 769 1873e870SAndi Kleen# partial inlining inlines only parts of functions 770 1873e870SAndi KleenKBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ 771 1873e870SAndi Kleen $(call cc-option,-fno-ipa-cp-clone,) \ 772 1873e870SAndi Kleen $(call cc-option,-fno-partial-inlining) 773 1873e870SAndi Kleenendif 774 1873e870SAndi Kleen 775 08f67461SMike Frysingerifneq ($(CONFIG_FRAME_WARN),0) 776 a83e4ca2SMasahiro YamadaKBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN) 777 35bb5b1eSAndi Kleenendif 778 35bb5b1eSAndi Kleen 779 2a61f474SMasahiro Yamadastackp-flags-$(CONFIG_CC_HAS_STACKPROTECTOR_NONE) := -fno-stack-protector 780 050e9baaSLinus Torvaldsstackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector 781 050e9baaSLinus Torvaldsstackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong 782 2a61f474SMasahiro Yamada 783 2a61f474SMasahiro YamadaKBUILD_CFLAGS += $(stackp-flags-y) 784 e06b8b98SSam Ravnborg 785 076f421dSMasahiro Yamadaifdef CONFIG_CC_IS_CLANG 786 a1494304SMasahiro YamadaKBUILD_CPPFLAGS += -Qunused-arguments 787 a1494304SMasahiro YamadaKBUILD_CFLAGS += -Wno-format-invalid-specifier 788 a1494304SMasahiro YamadaKBUILD_CFLAGS += -Wno-gnu 789 cfe17c9bSMasahiro Yamada# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the 790 cfe17c9bSMasahiro Yamada# source of a reference will be _MergedGlobals and not on of the whitelisted names. 791 cfe17c9bSMasahiro Yamada# See modpost pattern 2 792 a1494304SMasahiro YamadaKBUILD_CFLAGS += -mno-global-merge 793 cfe17c9bSMasahiro Yamadaelse 794 cfe17c9bSMasahiro Yamada 795 cfe17c9bSMasahiro Yamada# These warnings generated too much noise in a regular build. 796 cfe17c9bSMasahiro Yamada# Use make W=1 to enable them (see scripts/Makefile.extrawarn) 797 9df3e7a7SMasahiro YamadaKBUILD_CFLAGS += -Wno-unused-but-set-variable 798 e2079e93SNathan Chancellor 799 e2079e93SNathan Chancellor# Warn about unmarked fall-throughs in switch statement. 800 e2079e93SNathan Chancellor# Disabled for clang while comment to attribute conversion happens and 801 e2079e93SNathan Chancellor# https://github.com/ClangBuiltLinux/linux/issues/636 is discussed. 802 e2079e93SNathan ChancellorKBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,) 803 cfe17c9bSMasahiro Yamadaendif 804 cfe17c9bSMasahiro Yamada 805 0a5f4176SSodagudi PrasadKBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) 806 1da177e4SLinus Torvaldsifdef CONFIG_FRAME_POINTER 807 a0f97e06SSam RavnborgKBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 808 1da177e4SLinus Torvaldselse 809 7e9501fdSRabin Vincent# Some targets (ARM with Thumb2, for example), can't be built with frame 810 7e9501fdSRabin Vincent# pointers. For those, we don't have FUNCTION_TRACER automatically 811 7e9501fdSRabin Vincent# select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 812 7e9501fdSRabin Vincent# incompatible with -fomit-frame-pointer with current GCC, so we don't use 813 7e9501fdSRabin Vincent# -fomit-frame-pointer with FUNCTION_TRACER. 814 7e9501fdSRabin Vincentifndef CONFIG_FUNCTION_TRACER 815 a0f97e06SSam RavnborgKBUILD_CFLAGS += -fomit-frame-pointer 816 1da177e4SLinus Torvaldsendif 817 7e9501fdSRabin Vincentendif 818 1da177e4SLinus Torvalds 819 709a972eSKees Cook# Initialize all stack variables with a pattern, if desired. 820 709a972eSKees Cookifdef CONFIG_INIT_STACK_ALL 821 709a972eSKees CookKBUILD_CFLAGS += -ftrivial-auto-var-init=pattern 822 709a972eSKees Cookendif 823 709a972eSKees Cook 824 1e88e415SMasahiro YamadaDEBUG_CFLAGS := $(call cc-option, -fno-var-tracking-assignments) 825 2062afb4SLinus Torvalds 826 1da177e4SLinus Torvaldsifdef CONFIG_DEBUG_INFO 827 866ced95SAndi Kleenifdef CONFIG_DEBUG_INFO_SPLIT 828 9d937444SMasahiro YamadaDEBUG_CFLAGS += -gsplit-dwarf 829 866ced95SAndi Kleenelse 830 1e88e415SMasahiro YamadaDEBUG_CFLAGS += -g 831 866ced95SAndi Kleenendif 832 2288328cSBehan WebsterKBUILD_AFLAGS += -Wa,-gdwarf-2 833 1da177e4SLinus Torvaldsendif 834 bfaf2dd3SAndi Kleenifdef CONFIG_DEBUG_INFO_DWARF4 835 9d937444SMasahiro YamadaDEBUG_CFLAGS += -gdwarf-4 836 bfaf2dd3SAndi Kleenendif 837 1da177e4SLinus Torvalds 838 d6f4ceb7SAndi Kleenifdef CONFIG_DEBUG_INFO_REDUCED 839 1e88e415SMasahiro YamadaDEBUG_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 840 e82c4bb8SAndi Kleen $(call cc-option,-fno-var-tracking) 841 d6f4ceb7SAndi Kleenendif 842 d6f4ceb7SAndi Kleen 843 10e68b02SNick Desaulniersifdef CONFIG_DEBUG_INFO_COMPRESSED 844 10e68b02SNick DesaulniersDEBUG_CFLAGS += -gz=zlib 845 10e68b02SNick DesaulniersKBUILD_AFLAGS += -Wa,--compress-debug-sections=zlib 846 10e68b02SNick DesaulniersKBUILD_LDFLAGS += --compress-debug-sections=zlib 847 10e68b02SNick Desaulniersendif 848 10e68b02SNick Desaulniers 849 1e88e415SMasahiro YamadaKBUILD_CFLAGS += $(DEBUG_CFLAGS) 850 1e88e415SMasahiro Yamadaexport DEBUG_CFLAGS 851 1e88e415SMasahiro Yamada 852 606576ceSSteven Rostedtifdef CONFIG_FUNCTION_TRACER 853 07d04081SVasily Gorbikifdef CONFIG_FTRACE_MCOUNT_RECORD 854 07d04081SVasily Gorbik # gcc 5 supports generating the mcount tables directly 855 07d04081SVasily Gorbik ifeq ($(call cc-option-yn,-mrecord-mcount),y) 856 07d04081SVasily Gorbik CC_FLAGS_FTRACE += -mrecord-mcount 857 07d04081SVasily Gorbik export CC_USING_RECORD_MCOUNT := 1 858 a2546faeSSteven Rostedt endif 859 2f4df001SVasily Gorbik ifdef CONFIG_HAVE_NOP_MCOUNT 860 2f4df001SVasily Gorbik ifeq ($(call cc-option-yn, -mnop-mcount),y) 861 2f4df001SVasily Gorbik CC_FLAGS_FTRACE += -mnop-mcount 862 2f4df001SVasily Gorbik CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 863 2f4df001SVasily Gorbik endif 864 2f4df001SVasily Gorbik endif 865 07d04081SVasily Gorbikendif 866 a2546faeSSteven Rostedtifdef CONFIG_HAVE_FENTRY 867 f28bc3c3SVasily Gorbik ifeq ($(call cc-option-yn, -mfentry),y) 868 f28bc3c3SVasily Gorbik CC_FLAGS_FTRACE += -mfentry 869 f28bc3c3SVasily Gorbik CC_FLAGS_USING += -DCC_USING_FENTRY 870 a2546faeSSteven Rostedt endif 871 f28bc3c3SVasily Gorbikendif 872 f28bc3c3SVasily Gorbikexport CC_FLAGS_FTRACE 873 f28bc3c3SVasily GorbikKBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 874 f28bc3c3SVasily GorbikKBUILD_AFLAGS += $(CC_FLAGS_USING) 875 72441cb1SSteven Rostedtifdef CONFIG_DYNAMIC_FTRACE 876 cf4db259SSteven Rostedt ifdef CONFIG_HAVE_C_RECORDMCOUNT 877 72441cb1SSteven Rostedt BUILD_C_RECORDMCOUNT := y 878 72441cb1SSteven Rostedt export BUILD_C_RECORDMCOUNT 879 72441cb1SSteven Rostedt endif 880 72441cb1SSteven Rostedtendif 881 16444a8aSArnaldo Carvalho de Meloendif 882 16444a8aSArnaldo Carvalho de Melo 883 91341d4bSSam Ravnborg# We trigger additional mismatches with less inlining 884 91341d4bSSam Ravnborgifdef CONFIG_DEBUG_SECTION_MISMATCH 885 91341d4bSSam RavnborgKBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 886 91341d4bSSam Ravnborgendif 887 91341d4bSSam Ravnborg 888 90ad4052SMasahiro Yamadaifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 889 e85d1d65SMasahiro YamadaKBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 890 e85d1d65SMasahiro YamadaLDFLAGS_vmlinux += --gc-sections 891 90ad4052SMasahiro Yamadaendif 892 90ad4052SMasahiro Yamada 893 43bd3a95SMiroslav Benesifdef CONFIG_LIVEPATCH 894 43bd3a95SMiroslav BenesKBUILD_CFLAGS += $(call cc-option, -flive-patching=inline-clone) 895 43bd3a95SMiroslav Benesendif 896 43bd3a95SMiroslav Benes 897 e8e69931SSam Ravnborg# arch Makefile may override CC so keep this after arch Makefile is included 898 e08d6de4SMasahiro YamadaNOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 899 e8e69931SSam Ravnborg 900 1da177e4SLinus Torvalds# warn about C99 declaration after statement 901 a33e7ae2SMasahiro YamadaKBUILD_CFLAGS += -Wdeclaration-after-statement 902 1da177e4SLinus Torvalds 903 0bb95f80SKees Cook# Variable Length Arrays (VLAs) should not be used anywhere in the kernel 904 8289f913SMasahiro YamadaKBUILD_CFLAGS += -Wvla 905 0bb95f80SKees Cook 906 070b98bfSSam Ravnborg# disable pointer signed / unsigned warnings in gcc 4.0 907 fb073a4bSMasahiro YamadaKBUILD_CFLAGS += -Wno-pointer-sign 908 1da177e4SLinus Torvalds 909 217c3e01SStephen Rothwell# disable stringop warnings in gcc 8+ 910 217c3e01SStephen RothwellKBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 911 217c3e01SStephen Rothwell 912 5c45de21SLinus Torvalds# We'll want to enable this eventually, but it's not going away for 5.7 at least 913 5c45de21SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) 914 44720996SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, array-bounds) 915 5a76021cSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) 916 5c45de21SLinus Torvalds 917 adc71920SLinus Torvalds# Another good warning that we'll want to enable eventually 918 adc71920SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, restrict) 919 adc71920SLinus Torvalds 920 78a5255fSLinus Torvalds# Enabled with W=2, disabled by default as noisy 921 78a5255fSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized) 922 78a5255fSLinus Torvalds 923 fe8d0a41SKirill Smelkov# disable invalid "can't wrap" optimizations for signed / pointers 924 a137802eSLinus TorvaldsKBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 925 d0115552SLinus Torvalds 926 87e0d4f0SDaniel Borkmann# clang sets -fmerge-all-constants by default as optimization, but this 927 87e0d4f0SDaniel Borkmann# is non-conforming behavior for C and in fact breaks the kernel, so we 928 87e0d4f0SDaniel Borkmann# need to disable it here generally. 929 87e0d4f0SDaniel BorkmannKBUILD_CFLAGS += $(call cc-option,-fno-merge-all-constants) 930 87e0d4f0SDaniel Borkmann 931 87e0d4f0SDaniel Borkmann# for gcc -fno-merge-all-constants disables everything, but it is fine 932 87e0d4f0SDaniel Borkmann# to have actual conforming behavior enabled. 933 87e0d4f0SDaniel BorkmannKBUILD_CFLAGS += $(call cc-option,-fmerge-constants) 934 87e0d4f0SDaniel Borkmann 935 3ce120b1SLinus Torvalds# Make sure -fstack-check isn't enabled (like gentoo apparently did) 936 3ce120b1SLinus TorvaldsKBUILD_CFLAGS += $(call cc-option,-fno-stack-check,) 937 3ce120b1SLinus Torvalds 938 8f7f5c9fSAndi Kleen# conserve stack if available 939 8f7f5c9fSAndi KleenKBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 940 8f7f5c9fSAndi Kleen 941 fe7c36c7SJosh Triplett# Prohibit date/time macros, which would make the build non-deterministic 942 fe7c36c7SJosh TriplettKBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 943 fe7c36c7SJosh Triplett 944 ea8daa7bSDaniel Wagner# enforce correct pointer usage 945 ea8daa7bSDaniel WagnerKBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) 946 ea8daa7bSDaniel Wagner 947 c834f0e8SKees Cook# Require designated initializers for all marked structures 948 c834f0e8SKees CookKBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 949 c834f0e8SKees Cook 950 a73619a8SMasahiro Yamada# change __FILE__ to the relative path from the srctree 951 a73619a8SMasahiro YamadaKBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 952 a73619a8SMasahiro Yamada 953 29be86d7SSeth Forshee# ensure -fcf-protection is disabled when using retpoline as it is 954 29be86d7SSeth Forshee# incompatible with -mindirect-branch=thunk-extern 955 29be86d7SSeth Forsheeifdef CONFIG_RETPOLINE 956 29be86d7SSeth ForsheeKBUILD_CFLAGS += $(call cc-option,-fcf-protection=none) 957 29be86d7SSeth Forsheeendif 958 29be86d7SSeth Forshee 959 a436bb7bSMasahiro Yamadainclude scripts/Makefile.kasan 960 a436bb7bSMasahiro Yamadainclude scripts/Makefile.extrawarn 961 c6d30853SAndrey Ryabinininclude scripts/Makefile.ubsan 962 a86fe353SMasahiro Yamada 963 8cc7af75SMasahiro Yamada# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 964 8cc7af75SMasahiro YamadaKBUILD_CPPFLAGS += $(KCPPFLAGS) 965 8cc7af75SMasahiro YamadaKBUILD_AFLAGS += $(KAFLAGS) 966 8cc7af75SMasahiro YamadaKBUILD_CFLAGS += $(KCFLAGS) 967 52bcc330SSam Ravnborg 968 89ff7131SMasahiro YamadaKBUILD_LDFLAGS_MODULE += --build-id 969 89ff7131SMasahiro YamadaLDFLAGS_vmlinux += --build-id 970 18991197SRoland McGrath 971 5d7d18f5SDavid Howellsifeq ($(CONFIG_STRIP_ASM_SYMS),y) 972 d79a2719SAndi KleenLDFLAGS_vmlinux += $(call ld-option, -X,) 973 5d7d18f5SDavid Howellsendif 974 5d7d18f5SDavid Howells 975 5cf896fbSPeter Collingbourneifeq ($(CONFIG_RELR),y) 976 5cf896fbSPeter CollingbourneLDFLAGS_vmlinux += --pack-dyn-relocs=relr 977 5cf896fbSPeter Collingbourneendif 978 5cf896fbSPeter Collingbourne 979 7f3a59dbSMasahiro Yamada# Align the bit size of userspace programs with the kernel 980 7f3a59dbSMasahiro YamadaKBUILD_USERCFLAGS += $(filter -m32 -m64, $(KBUILD_CFLAGS)) 981 7f3a59dbSMasahiro YamadaKBUILD_USERLDFLAGS += $(filter -m32 -m64, $(KBUILD_CFLAGS)) 982 7f3a59dbSMasahiro Yamada 983 80591e61SLuc Van Oostenryck# make the checker run with the right architecture 984 80591e61SLuc Van OostenryckCHECKFLAGS += --arch=$(ARCH) 985 80591e61SLuc Van Oostenryck 986 14516765SLuc Van Oostenryck# insure the checker run with the right endianness 987 14516765SLuc Van OostenryckCHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 988 14516765SLuc Van Oostenryck 989 1f2f01b1SLuc Van Oostenryck# the checker needs the correct machine size 990 1f2f01b1SLuc Van OostenryckCHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 991 1f2f01b1SLuc Van Oostenryck 992 1da177e4SLinus Torvalds# Default kernel image to build when no specific target is given. 993 1da177e4SLinus Torvalds# KBUILD_IMAGE may be overruled on the command line or 994 1da177e4SLinus Torvalds# set in the environment 995 1da177e4SLinus Torvalds# Also any assignments in arch/$(ARCH)/Makefile take precedence over 996 1da177e4SLinus Torvalds# this default value 997 1da177e4SLinus Torvaldsexport KBUILD_IMAGE ?= vmlinux 998 1da177e4SLinus Torvalds 999 1da177e4SLinus Torvalds# 1000 1da177e4SLinus Torvalds# INSTALL_PATH specifies where to place the updated kernel and system map 1001 1da177e4SLinus Torvalds# images. Default is /boot, but you can set it to other values 1002 1da177e4SLinus Torvaldsexport INSTALL_PATH ?= /boot 1003 1da177e4SLinus Torvalds 1004 1da177e4SLinus Torvalds# 1005 f4d4ffc0SJason Cooper# INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1006 f4d4ffc0SJason Cooper# Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1007 f4d4ffc0SJason Cooper# an argument if needed. Otherwise it defaults to the kernel install path 1008 f4d4ffc0SJason Cooper# 1009 f4d4ffc0SJason Cooperexport INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1010 f4d4ffc0SJason Cooper 1011 f4d4ffc0SJason Cooper# 1012 1da177e4SLinus Torvalds# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 1013 1da177e4SLinus Torvalds# relocations required by build roots. This is not defined in the 1014 070b98bfSSam Ravnborg# makefile but the argument can be passed to make if needed. 1015 1da177e4SLinus Torvalds# 1016 1da177e4SLinus Torvalds 1017 df9df036SSam RavnborgMODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 1018 1da177e4SLinus Torvaldsexport MODLIB 1019 1da177e4SLinus Torvalds 1020 ac031f26STheodore Ts'o# 1021 2ea03891SSam Ravnborg# INSTALL_MOD_STRIP, if defined, will cause modules to be 1022 2ea03891SSam Ravnborg# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 1023 2ea03891SSam Ravnborg# the default option --strip-debug will be used. Otherwise, 1024 177b241dSGilles Espinasse# INSTALL_MOD_STRIP value will be used as the options to the strip command. 1025 2ea03891SSam Ravnborg 1026 ac031f26STheodore Ts'oifdef INSTALL_MOD_STRIP 1027 ac031f26STheodore Ts'oifeq ($(INSTALL_MOD_STRIP),1) 1028 2ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) --strip-debug 1029 ac031f26STheodore Ts'oelse 1030 2ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 1031 ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP=1 1032 ac031f26STheodore Ts'oelse 1033 2ea03891SSam Ravnborgmod_strip_cmd = true 1034 ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP 1035 ac031f26STheodore Ts'oexport mod_strip_cmd 1036 ac031f26STheodore Ts'o 1037 beb50df3SBertrand Jacquin# CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed 1038 beb50df3SBertrand Jacquin# after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP 1039 beb50df3SBertrand Jacquin# or CONFIG_MODULE_COMPRESS_XZ. 1040 beb50df3SBertrand Jacquin 1041 beb50df3SBertrand Jacquinmod_compress_cmd = true 1042 beb50df3SBertrand Jacquinifdef CONFIG_MODULE_COMPRESS 1043 beb50df3SBertrand Jacquin ifdef CONFIG_MODULE_COMPRESS_GZIP 1044 *8dfb61dcSDenis Efremov mod_compress_cmd = $(_GZIP) -n -f 1045 beb50df3SBertrand Jacquin endif # CONFIG_MODULE_COMPRESS_GZIP 1046 beb50df3SBertrand Jacquin ifdef CONFIG_MODULE_COMPRESS_XZ 1047 *8dfb61dcSDenis Efremov mod_compress_cmd = $(XZ) -f 1048 beb50df3SBertrand Jacquin endif # CONFIG_MODULE_COMPRESS_XZ 1049 beb50df3SBertrand Jacquinendif # CONFIG_MODULE_COMPRESS 1050 beb50df3SBertrand Jacquinexport mod_compress_cmd 1051 beb50df3SBertrand Jacquin 1052 d9d8d7edSMichal Marekifdef CONFIG_MODULE_SIG_ALL 1053 3ee550f1SDavid Woodhouse$(eval $(call config_filename,MODULE_SIG_KEY)) 1054 3ee550f1SDavid Woodhouse 1055 3ee550f1SDavid Woodhousemod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 1056 e2a666d5SRusty Russellelse 1057 e2a666d5SRusty Russellmod_sign_cmd = true 1058 e2a666d5SRusty Russellendif 1059 e2a666d5SRusty Russellexport mod_sign_cmd 1060 e2a666d5SRusty Russell 1061 056d28d1SRolf Eike BeerHOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf) 1062 056d28d1SRolf Eike Beer 1063 9f0c18aeSJosh Poimboeufifdef CONFIG_STACK_VALIDATION 1064 9f0c18aeSJosh Poimboeuf has_libelf := $(call try-run,\ 1065 056d28d1SRolf Eike Beer echo "int main() {}" | $(HOSTCC) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0) 1066 9f0c18aeSJosh Poimboeuf ifeq ($(has_libelf),1) 1067 9f0c18aeSJosh Poimboeuf objtool_target := tools/objtool FORCE 1068 9f0c18aeSJosh Poimboeuf else 1069 9f0c18aeSJosh Poimboeuf SKIP_STACK_VALIDATION := 1 1070 9f0c18aeSJosh Poimboeuf export SKIP_STACK_VALIDATION 1071 9f0c18aeSJosh Poimboeuf endif 1072 9f0c18aeSJosh Poimboeufendif 1073 9f0c18aeSJosh Poimboeuf 1074 e00d8880SMasahiro YamadaPHONY += prepare0 1075 e2a666d5SRusty Russell 1076 394053f4SMasahiro Yamadaexport MODORDER := $(extmod-prefix)modules.order 1077 bc35d4bdSMasahiro Yamadaexport MODULES_NSDEPS := $(extmod-prefix)modules.nsdeps 1078 47801c97SMasahiro Yamada 1079 1da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 1080 cfc411e7SDavid Howellscore-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ 1081 1da177e4SLinus Torvalds 1082 23febe37SMasahiro Yamadavmlinux-dirs := $(patsubst %/,%,$(filter %/, \ 1083 1da177e4SLinus Torvalds $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 1084 95fb6317SMasahiro Yamada $(libs-y) $(libs-m))) 1085 1da177e4SLinus Torvalds 1086 1eaca4b9SMasahiro Yamadavmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \ 1087 23febe37SMasahiro Yamada $(patsubst %/,%,$(filter %/, $(core-) \ 1088 95fb6317SMasahiro Yamada $(drivers-) $(libs-)))) 1089 1da177e4SLinus Torvalds 1090 b2c88554SMasahiro Yamadasubdir-modorder := $(addsuffix modules.order,$(filter %/, \ 1091 b2c88554SMasahiro Yamada $(core-y) $(core-m) $(libs-y) $(libs-m) \ 1092 b2c88554SMasahiro Yamada $(drivers-y) $(drivers-m))) 1093 b2c88554SMasahiro Yamada 1094 c99f3918SMasahiro Yamadabuild-dirs := $(vmlinux-dirs) 1095 76cd306dSMasahiro Yamadaclean-dirs := $(vmlinux-alldirs) 1096 c99f3918SMasahiro Yamada 1097 1f2bfbd0SSam Ravnborg# Externally visible symbols (used by link-vmlinux.sh) 1098 f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS := $(head-y) $(patsubst %/,%/built-in.a, $(core-y)) 1099 f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS += $(addsuffix built-in.a, $(filter %/, $(libs-y))) 1100 f0d50ca0SMasahiro Yamadaifdef CONFIG_MODULES 1101 f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y))) 1102 f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y)) 1103 f0d50ca0SMasahiro Yamadaelse 1104 f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y)) 1105 f0d50ca0SMasahiro Yamadaendif 1106 f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y)) 1107 f0d50ca0SMasahiro Yamada 1108 f0d50ca0SMasahiro Yamadaexport KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS 1109 95698570SSam Ravnborgexport KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 1110 1f2bfbd0SSam Ravnborgexport LDFLAGS_vmlinux 1111 85f0ae7eSMasahiro Yamada# used by scripts/Makefile.package 1112 233c741dSMasahiro Yamadaexport KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools) 1113 1da177e4SLinus Torvalds 1114 d151e971SMasahiro Yamadavmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) 1115 1da177e4SLinus Torvalds 1116 3fdc7d3fSMasahiro Yamada# Recurse until adjust_autoksyms.sh is satisfied 1117 3fdc7d3fSMasahiro YamadaPHONY += autoksyms_recursive 1118 2441e78bSNicolas Pitreifdef CONFIG_TRIM_UNUSED_KSYMS 1119 1f50b80aSMasahiro Yamada# For the kernel to actually contain only the needed exported symbols, 1120 1f50b80aSMasahiro Yamada# we have to build modules as well to determine what those symbols are. 1121 1f50b80aSMasahiro Yamada# (this can be evaluated only once include/config/auto.conf has been included) 1122 1f50b80aSMasahiro YamadaKBUILD_MODULES := 1 1123 fb2d99beSMasahiro Yamada 1124 fb2d99beSMasahiro Yamadaautoksyms_recursive: descend modules.order 1125 fb2d99beSMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ 1126 fb2d99beSMasahiro Yamada "$(MAKE) -f $(srctree)/Makefile vmlinux" 1127 1f50b80aSMasahiro Yamadaendif 1128 1f50b80aSMasahiro Yamada 1129 07a422bbSMasahiro Yamadaautoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) 1130 07a422bbSMasahiro Yamada 1131 88694cffSQuentin Perretquiet_cmd_autoksyms_h = GEN $@ 1132 88694cffSQuentin Perret cmd_autoksyms_h = mkdir -p $(dir $@); \ 1133 88694cffSQuentin Perret $(CONFIG_SHELL) $(srctree)/scripts/gen_autoksyms.sh $@ 1134 88694cffSQuentin Perret 1135 07a422bbSMasahiro Yamada$(autoksyms_h): 1136 88694cffSQuentin Perret $(call cmd,autoksyms_h) 1137 23121ca2SNicolas Pitre 1138 fbe6e37dSNicholas PigginARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) 1139 fbe6e37dSNicholas Piggin 1140 fbe6e37dSNicholas Piggin# Final link of vmlinux with optional arch pass after final link 1141 fbe6e37dSNicholas Piggincmd_link-vmlinux = \ 1142 d503ac53SMasahiro Yamada $(CONFIG_SHELL) $< $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_vmlinux) ; \ 1143 fbe6e37dSNicholas Piggin $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1144 2441e78bSNicolas Pitre 1145 3fdc7d3fSMasahiro Yamadavmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE 1146 1f2bfbd0SSam Ravnborg +$(call if_changed,link-vmlinux) 1147 741f98feSSam Ravnborg 1148 392885eeSMasahiro Yamadatargets := vmlinux 1149 392885eeSMasahiro Yamada 1150 1da177e4SLinus Torvalds# The actual objects are generated when descending, 1151 1da177e4SLinus Torvalds# make sure no implicit rule kicks in 1152 b2c88554SMasahiro Yamada$(sort $(vmlinux-deps) $(subdir-modorder)): descend ; 1153 1da177e4SLinus Torvalds 1154 ba97df45SMasahiro Yamadafilechk_kernel.release = \ 1155 0d0e7718SMichal Marek echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1156 0d0e7718SMichal Marek 1157 83a35e36SGeert Uytterhoeven# Store (new) KERNELRELEASE string in include/config/kernel.release 1158 24512795SMasahiro Yamadainclude/config/kernel.release: FORCE 1159 0d0e7718SMichal Marek $(call filechk,kernel.release) 1160 cb58455cSSam Ravnborg 1161 d8821622SMasahiro Yamada# Additional helpers built in scripts/ 1162 d8821622SMasahiro Yamada# Carefully list dependencies so we do not try to build scripts twice 1163 d8821622SMasahiro Yamada# in parallel 1164 d8821622SMasahiro YamadaPHONY += scripts 1165 60df1aeeSMasahiro Yamadascripts: scripts_basic scripts_dtc 1166 d8821622SMasahiro Yamada $(Q)$(MAKE) $(build)=$(@) 1167 cb58455cSSam Ravnborg 1168 1da177e4SLinus Torvalds# Things we need to do before we recursively start building the kernel 1169 5bb78269SSam Ravnborg# or the modules are listed in "prepare". 1170 5bb78269SSam Ravnborg# A multi level approach is used. prepareN is processed before prepareN-1. 1171 5bb78269SSam Ravnborg# archprepare is used in arch Makefiles and when processed asm symlink, 1172 5bb78269SSam Ravnborg# version.h and scripts_basic is processed / created. 1173 1da177e4SLinus Torvalds 1174 a5139fb3SMasahiro YamadaPHONY += prepare archprepare 1175 5bb78269SSam Ravnborg 1176 36de077bSMasahiro Yamadaarchprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \ 1177 3044dd05SMasahiro Yamada asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h \ 1178 3044dd05SMasahiro Yamada include/generated/autoconf.h 1179 5bb78269SSam Ravnborg 1180 65bba042SMasahiro Yamadaprepare0: archprepare 1181 60df1aeeSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts/mod 1182 8d36a623SSam Ravnborg $(Q)$(MAKE) $(build)=. 1183 86feeaa8SSam Ravnborg 1184 1da177e4SLinus Torvalds# All the preparing.. 1185 b9ab5ebbSJosh Poimboeufprepare: prepare0 prepare-objtool 1186 b9ab5ebbSJosh Poimboeuf 1187 2c1f4f12SMasahiro Yamada# Support for using generic headers in asm-generic 1188 7d0e5c20SMasahiro Yamadaasm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj 1189 7d0e5c20SMasahiro Yamada 1190 2c1f4f12SMasahiro YamadaPHONY += asm-generic uapi-asm-generic 1191 2c1f4f12SMasahiro Yamadaasm-generic: uapi-asm-generic 1192 037fc336SMasahiro Yamada $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \ 1193 037fc336SMasahiro Yamada generic=include/asm-generic 1194 2c1f4f12SMasahiro Yamadauapi-asm-generic: 1195 037fc336SMasahiro Yamada $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \ 1196 037fc336SMasahiro Yamada generic=include/uapi/asm-generic 1197 2c1f4f12SMasahiro Yamada 1198 b9ab5ebbSJosh PoimboeufPHONY += prepare-objtool 1199 3b27a0c8SJosh Poimboeufprepare-objtool: $(objtool_target) 1200 ef7cfd00SMasahiro Yamadaifeq ($(SKIP_STACK_VALIDATION),1) 1201 ef7cfd00SMasahiro Yamadaifdef CONFIG_UNWINDER_ORC 1202 ef7cfd00SMasahiro Yamada @echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 1203 ef7cfd00SMasahiro Yamada @false 1204 ef7cfd00SMasahiro Yamadaelse 1205 ef7cfd00SMasahiro Yamada @echo "warning: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 1206 ef7cfd00SMasahiro Yamadaendif 1207 ef7cfd00SMasahiro Yamadaendif 1208 1da177e4SLinus Torvalds 1209 1da177e4SLinus Torvalds# Generate some files 1210 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1211 1da177e4SLinus Torvalds 1212 1da177e4SLinus Torvalds# KERNELRELEASE can change from a few different places, meaning version.h 1213 1da177e4SLinus Torvalds# needs to be updated, so this check is forced on all builds 1214 1da177e4SLinus Torvalds 1215 1da177e4SLinus Torvaldsuts_len := 64 1216 63104eecSSam Ravnborgdefine filechk_utsrelease.h 1217 1da177e4SLinus Torvalds if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1218 1da177e4SLinus Torvalds echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1219 1da177e4SLinus Torvalds exit 1; \ 1220 1da177e4SLinus Torvalds fi; \ 1221 ad774086SMasahiro Yamada echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" 1222 1da177e4SLinus Torvaldsendef 1223 1da177e4SLinus Torvalds 1224 63104eecSSam Ravnborgdefine filechk_version.h 1225 ad774086SMasahiro Yamada echo \#define LINUX_VERSION_CODE $(shell \ 1226 78d3bb44SMichal Marek expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1227 ad774086SMasahiro Yamada echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))' 1228 63104eecSSam Ravnborgendef 1229 63104eecSSam Ravnborg 1230 43fee2b2SMasahiro Yamada$(version_h): FORCE 1231 1da177e4SLinus Torvalds $(call filechk,version.h) 1232 223c24a7SMichal Marek $(Q)rm -f $(old_version_h) 1233 1da177e4SLinus Torvalds 1234 273b281fSSam Ravnborginclude/generated/utsrelease.h: include/config/kernel.release FORCE 1235 63104eecSSam Ravnborg $(call filechk,utsrelease.h) 1236 63104eecSSam Ravnborg 1237 179efcb4SVegard NossumPHONY += headerdep 1238 179efcb4SVegard Nossumheaderdep: 1239 9663d989SPeter Foley $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1240 9663d989SPeter Foley $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1241 179efcb4SVegard Nossum 1242 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1243 8d730cfbSDavid Woodhouse# Kernel headers 1244 8d730cfbSDavid Woodhouse 1245 e6883b18SSam Ravnborg#Default location for installed headers 1246 e6883b18SSam Ravnborgexport INSTALL_HDR_PATH = $(objtree)/usr 1247 e6883b18SSam Ravnborg 1248 59b2bd05SMasahiro Yamadaquiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include 1249 59b2bd05SMasahiro Yamada cmd_headers_install = \ 1250 59b2bd05SMasahiro Yamada mkdir -p $(INSTALL_HDR_PATH); \ 1251 59b2bd05SMasahiro Yamada rsync -mrl --include='*/' --include='*\.h' --exclude='*' \ 1252 59b2bd05SMasahiro Yamada usr/include $(INSTALL_HDR_PATH) 1253 6d716275SDavid Woodhouse 1254 8d730cfbSDavid WoodhousePHONY += headers_install 1255 59b2bd05SMasahiro Yamadaheaders_install: headers 1256 59b2bd05SMasahiro Yamada $(call cmd,headers_install) 1257 4f193362SPaul Smith 1258 1da177e4SLinus TorvaldsPHONY += archheaders archscripts 1259 1da177e4SLinus Torvalds 1260 a5bae54cSMasahiro Yamadahdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj 1261 1da177e4SLinus Torvalds 1262 59b2bd05SMasahiro YamadaPHONY += headers 1263 59b2bd05SMasahiro Yamadaheaders: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts 1264 9d022c54SMasahiro Yamada $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ 1265 2fb9b1bdSSam Ravnborg $(error Headers not exportable for the $(SRCARCH) architecture)) 1266 d5470d14SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=include/uapi 1267 d5470d14SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi 1268 1f85712eSMike Frysinger 1269 7ecaf069SMasahiro Yamada# Deprecated. It is no-op now. 1270 68475359SDavid WoodhousePHONY += headers_check 1271 7ecaf069SMasahiro Yamadaheaders_check: 1272 7ecaf069SMasahiro Yamada @: 1273 68475359SDavid Woodhouse 1274 e949f4c2SMasahiro Yamadaifdef CONFIG_HEADERS_INSTALL 1275 59b2bd05SMasahiro Yamadaprepare: headers 1276 e949f4c2SMasahiro Yamadaendif 1277 1da177e4SLinus Torvalds 1278 bdd7714bSMasahiro YamadaPHONY += scripts_unifdef 1279 bdd7714bSMasahiro Yamadascripts_unifdef: scripts_basic 1280 bdd7714bSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1281 bdd7714bSMasahiro Yamada 1282 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1283 5a5da78bSShuah Khan# Kernel selftest 1284 5a5da78bSShuah Khan 1285 5a5da78bSShuah KhanPHONY += kselftest 1286 5a5da78bSShuah Khankselftest: 1287 2bc84526SShuah Khan $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 1288 5a5da78bSShuah Khan 1289 17eac6c2SShuah Khankselftest-%: FORCE 1290 17eac6c2SShuah Khan $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $* 1291 dcb825a9SWang Long 1292 3d6dee7aSBamvor Jian ZhangPHONY += kselftest-merge 1293 3d6dee7aSBamvor Jian Zhangkselftest-merge: 1294 3d6dee7aSBamvor Jian Zhang $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1295 6d3db46cSDan Rue $(Q)find $(srctree)/tools/testing/selftests -name config | \ 1296 6d3db46cSDan Rue xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config 1297 3e4c6948SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1298 3d6dee7aSBamvor Jian Zhang 1299 5a5da78bSShuah Khan# --------------------------------------------------------------------------- 1300 37c8a5faSRob Herring# Devicetree files 1301 37c8a5faSRob Herring 1302 37c8a5faSRob Herringifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 1303 37c8a5faSRob Herringdtstree := arch/$(SRCARCH)/boot/dts 1304 37c8a5faSRob Herringendif 1305 37c8a5faSRob Herring 1306 37c8a5faSRob Herringifneq ($(dtstree),) 1307 37c8a5faSRob Herring 1308 a5139fb3SMasahiro Yamada%.dtb: include/config/kernel.release scripts_dtc 1309 37c8a5faSRob Herring $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1310 37c8a5faSRob Herring 1311 c473a8d0SMasahiro YamadaPHONY += dtbs dtbs_install dtbs_check 1312 b5154bf6SMasahiro Yamadadtbs: include/config/kernel.release scripts_dtc 1313 37c8a5faSRob Herring $(Q)$(MAKE) $(build)=$(dtstree) 1314 37c8a5faSRob Herring 1315 b5154bf6SMasahiro Yamadaifneq ($(filter dtbs_check, $(MAKECMDGOALS)),) 1316 e10c4321SMasahiro Yamadaexport CHECK_DTBS=y 1317 b5154bf6SMasahiro Yamadadtbs: dt_binding_check 1318 b5154bf6SMasahiro Yamadaendif 1319 b5154bf6SMasahiro Yamada 1320 b5154bf6SMasahiro Yamadadtbs_check: dtbs 1321 4f0e3a57SRob Herring 1322 37c8a5faSRob Herringdtbs_install: 1323 2431f22aSMasahiro Yamada $(Q)$(MAKE) $(dtbinst)=$(dtstree) dst=$(INSTALL_DTBS_PATH) 1324 37c8a5faSRob Herring 1325 37c8a5faSRob Herringifdef CONFIG_OF_EARLY_FLATTREE 1326 37c8a5faSRob Herringall: dtbs 1327 37c8a5faSRob Herringendif 1328 37c8a5faSRob Herring 1329 37c8a5faSRob Herringendif 1330 37c8a5faSRob Herring 1331 37c8a5faSRob HerringPHONY += scripts_dtc 1332 37c8a5faSRob Herringscripts_dtc: scripts_basic 1333 37c8a5faSRob Herring $(Q)$(MAKE) $(build)=scripts/dtc 1334 37c8a5faSRob Herring 1335 e10c4321SMasahiro Yamadaifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),) 1336 e10c4321SMasahiro Yamadaexport CHECK_DT_BINDING=y 1337 e10c4321SMasahiro Yamadaendif 1338 e10c4321SMasahiro Yamada 1339 c473a8d0SMasahiro YamadaPHONY += dt_binding_check 1340 4f0e3a57SRob Herringdt_binding_check: scripts_dtc 1341 4f0e3a57SRob Herring $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings 1342 4f0e3a57SRob Herring 1343 37c8a5faSRob Herring# --------------------------------------------------------------------------- 1344 1da177e4SLinus Torvalds# Modules 1345 1da177e4SLinus Torvalds 1346 e0b250b5SJonas Zeiger# install modules.builtin regardless of CONFIG_MODULES 1347 e0b250b5SJonas ZeigerPHONY += _builtin_inst_ 1348 e0b250b5SJonas Zeiger_builtin_inst_: 1349 e0b250b5SJonas Zeiger @mkdir -p $(MODLIB)/ 1350 e0b250b5SJonas Zeiger @cp -f modules.builtin $(MODLIB)/ 1351 e0b250b5SJonas Zeiger @cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/ 1352 e0b250b5SJonas Zeiger 1353 e0b250b5SJonas ZeigerPHONY += install 1354 e0b250b5SJonas Zeigerinstall: _builtin_inst_ 1355 e0b250b5SJonas Zeiger 1356 1da177e4SLinus Torvaldsifdef CONFIG_MODULES 1357 1da177e4SLinus Torvalds 1358 1da177e4SLinus Torvalds# By default, build modules as well 1359 1da177e4SLinus Torvalds 1360 73d1393eSMichal Marekall: modules 1361 1da177e4SLinus Torvalds 1362 4b50c8c4SMasahiro Yamada# When we're building modules with modversions, we need to consider 1363 4b50c8c4SMasahiro Yamada# the built-in objects during the descend as well, in order to 1364 4b50c8c4SMasahiro Yamada# make sure the checksums are up to date before we record them. 1365 4b50c8c4SMasahiro Yamadaifdef CONFIG_MODVERSIONS 1366 4b50c8c4SMasahiro Yamada KBUILD_BUILTIN := 1 1367 4b50c8c4SMasahiro Yamadaendif 1368 4b50c8c4SMasahiro Yamada 1369 1da177e4SLinus Torvalds# Build modules 1370 551559e1STejun Heo# 1371 551559e1STejun Heo# A module can be listed more than once in obj-m resulting in 1372 551559e1STejun Heo# duplicate lines in modules.order files. Those are removed 1373 551559e1STejun Heo# using awk while concatenating to the final file. 1374 1da177e4SLinus Torvalds 1375 4f193362SPaul SmithPHONY += modules 1376 8451791dSMasahiro Yamadamodules: $(if $(KBUILD_BUILTIN),vmlinux) modules_check 1377 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1378 8451791dSMasahiro Yamada 1379 8451791dSMasahiro YamadaPHONY += modules_check 1380 8451791dSMasahiro Yamadamodules_check: modules.order 1381 8451791dSMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $< 1382 1da177e4SLinus Torvalds 1383 b2c88554SMasahiro Yamadacmd_modules_order = $(AWK) '!x[$$0]++' $(real-prereqs) > $@ 1384 b2c88554SMasahiro Yamada 1385 b2c88554SMasahiro Yamadamodules.order: $(subdir-modorder) FORCE 1386 b2c88554SMasahiro Yamada $(call if_changed,modules_order) 1387 b2c88554SMasahiro Yamada 1388 b2c88554SMasahiro Yamadatargets += modules.order 1389 a6c36632SMichal Marek 1390 1da177e4SLinus Torvalds# Target to prepare building external modules 1391 4f193362SPaul SmithPHONY += modules_prepare 1392 059bc9fcSMasahiro Yamadamodules_prepare: prepare 1393 1da177e4SLinus Torvalds 1394 1da177e4SLinus Torvalds# Target to install modules 1395 4f193362SPaul SmithPHONY += modules_install 1396 1da177e4SLinus Torvaldsmodules_install: _modinst_ _modinst_post 1397 1da177e4SLinus Torvalds 1398 4f193362SPaul SmithPHONY += _modinst_ 1399 e0b250b5SJonas Zeiger_modinst_: _builtin_inst_ 1400 1da177e4SLinus Torvalds @rm -rf $(MODLIB)/kernel 1401 1da177e4SLinus Torvalds @rm -f $(MODLIB)/source 1402 1da177e4SLinus Torvalds @mkdir -p $(MODLIB)/kernel 1403 8e9b4667SMasahiro Yamada @ln -s $(abspath $(srctree)) $(MODLIB)/source 1404 1da177e4SLinus Torvalds @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1405 1da177e4SLinus Torvalds rm -f $(MODLIB)/build ; \ 1406 7e1c0477SMichal Marek ln -s $(CURDIR) $(MODLIB)/build ; \ 1407 1da177e4SLinus Torvalds fi 1408 1bd9a468SMasahiro Yamada @sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order 1409 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1410 1da177e4SLinus Torvalds 1411 50a8ec31SSam Ravnborg# This depmod is only for convenience to give the initial 1412 1da177e4SLinus Torvalds# boot a modules.dep even before / is mounted read-write. However the 1413 1da177e4SLinus Torvalds# boot script depmod is the master version. 1414 4f193362SPaul SmithPHONY += _modinst_post 1415 6d128e1eSLinus Torvalds_modinst_post: _modinst_ 1416 50a8ec31SSam Ravnborg $(call cmd,depmod) 1417 1da177e4SLinus Torvalds 1418 d890f510SJosh Boyerifeq ($(CONFIG_MODULE_SIG), y) 1419 d890f510SJosh BoyerPHONY += modules_sign 1420 d890f510SJosh Boyermodules_sign: 1421 d890f510SJosh Boyer $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1422 d890f510SJosh Boyerendif 1423 d890f510SJosh Boyer 1424 1da177e4SLinus Torvaldselse # CONFIG_MODULES 1425 1da177e4SLinus Torvalds 1426 1da177e4SLinus Torvalds# Modules not configured 1427 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1428 1da177e4SLinus Torvalds 1429 612e47ceSMasahiro YamadaPHONY += modules modules_install 1430 612e47ceSMasahiro Yamadamodules modules_install: 1431 5369f550SMichal Marek @echo >&2 1432 5369f550SMichal Marek @echo >&2 "The present kernel configuration has modules disabled." 1433 5369f550SMichal Marek @echo >&2 "Type 'make config' and enable loadable module support." 1434 5369f550SMichal Marek @echo >&2 "Then build a kernel with module support enabled." 1435 5369f550SMichal Marek @echo >&2 1436 1da177e4SLinus Torvalds @exit 1 1437 1da177e4SLinus Torvalds 1438 1da177e4SLinus Torvaldsendif # CONFIG_MODULES 1439 1da177e4SLinus Torvalds 1440 1da177e4SLinus Torvalds### 1441 1da177e4SLinus Torvalds# Cleaning is done on three levels. 1442 1da177e4SLinus Torvalds# make clean Delete most generated files 1443 1da177e4SLinus Torvalds# Leave enough to build external modules 1444 1da177e4SLinus Torvalds# make mrproper Delete the current configuration, and all generated files 1445 1da177e4SLinus Torvalds# make distclean Remove editor backup files, patch leftover files and the like 1446 1da177e4SLinus Torvalds 1447 1da177e4SLinus Torvalds# Directories & files removed with 'make clean' 1448 269a535cSMasahiro YamadaCLEAN_FILES += include/ksym vmlinux.symvers \ 1449 0663c68cSMasahiro Yamada modules.builtin modules.builtin.modinfo modules.nsdeps 1450 1da177e4SLinus Torvalds 1451 1da177e4SLinus Torvalds# Directories & files removed with 'make mrproper' 1452 0663c68cSMasahiro YamadaMRPROPER_FILES += include/config include/generated \ 1453 46a63d4bSMasahiro Yamada arch/$(SRCARCH)/include/generated .tmp_objdiff \ 1454 0663c68cSMasahiro Yamada debian snap tar-install \ 1455 0663c68cSMasahiro Yamada .config .config.old .version \ 1456 46457133SMasahiro Yamada Module.symvers \ 1457 fb117949SDavid Woodhouse signing_key.pem signing_key.priv signing_key.x509 \ 1458 fb117949SDavid Woodhouse x509.genkey extra_certificates signing_key.x509.keyid \ 1459 46a63d4bSMasahiro Yamada signing_key.x509.signer vmlinux-gdb.py \ 1460 46a63d4bSMasahiro Yamada *.spec 1461 1da177e4SLinus Torvalds 1462 46457133SMasahiro Yamada# Directories & files removed with 'make distclean' 1463 46457133SMasahiro YamadaDISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS 1464 46457133SMasahiro Yamada 1465 1da177e4SLinus Torvalds# clean - Delete most, but leave enough to build external modules 1466 1da177e4SLinus Torvalds# 1467 1da177e4SLinus Torvaldsclean: rm-files := $(CLEAN_FILES) 1468 1da177e4SLinus Torvalds 1469 76cd306dSMasahiro YamadaPHONY += archclean vmlinuxclean 1470 1da177e4SLinus Torvalds 1471 bd1ee804SPawel Mollvmlinuxclean: 1472 bd1ee804SPawel Moll $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1473 fbe6e37dSNicholas Piggin $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1474 bd1ee804SPawel Moll 1475 bd1ee804SPawel Mollclean: archclean vmlinuxclean 1476 1da177e4SLinus Torvalds 1477 1da177e4SLinus Torvalds# mrproper - Delete all generated files, including .config 1478 1da177e4SLinus Torvalds# 1479 1da177e4SLinus Torvaldsmrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1480 cb43fb57SMauro Carvalho Chehabmrproper-dirs := $(addprefix _mrproper_,scripts) 1481 1da177e4SLinus Torvalds 1482 b421b8a6SMasahiro YamadaPHONY += $(mrproper-dirs) mrproper 1483 1da177e4SLinus Torvalds$(mrproper-dirs): 1484 1da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1485 1da177e4SLinus Torvalds 1486 b421b8a6SMasahiro Yamadamrproper: clean $(mrproper-dirs) 1487 1da177e4SLinus Torvalds $(call cmd,rmfiles) 1488 1da177e4SLinus Torvalds 1489 1da177e4SLinus Torvalds# distclean 1490 1da177e4SLinus Torvalds# 1491 46457133SMasahiro Yamadadistclean: rm-files := $(wildcard $(DISTCLEAN_FILES)) 1492 46457133SMasahiro Yamada 1493 4f193362SPaul SmithPHONY += distclean 1494 1da177e4SLinus Torvalds 1495 1da177e4SLinus Torvaldsdistclean: mrproper 1496 46457133SMasahiro Yamada $(call cmd,rmfiles) 1497 1da177e4SLinus Torvalds @find $(srctree) $(RCS_FIND_IGNORE) \ 1498 1da177e4SLinus Torvalds \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1499 f78271dfSMasahiro Yamada -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1500 f78271dfSMasahiro Yamada -o -name 'core' \) \ 1501 1da177e4SLinus Torvalds -type f -print | xargs rm -f 1502 1da177e4SLinus Torvalds 1503 1da177e4SLinus Torvalds 1504 1da177e4SLinus Torvalds# Packaging of the kernel to various formats 1505 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1506 1da177e4SLinus Torvalds 1507 bafb6747SArnaldo Carvalho de Melo%src-pkg: FORCE 1508 000ec95fSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1509 031ecc6dSZach Brown%pkg: include/config/kernel.release FORCE 1510 000ec95fSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1511 1da177e4SLinus Torvalds 1512 1da177e4SLinus Torvalds# Brief documentation of the typical targets used 1513 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1514 1da177e4SLinus Torvalds 1515 5dffbe81SSegher Boessenkoolboards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1516 a1e7b7bbSKonstantin Khlebnikovboards := $(sort $(notdir $(boards))) 1517 5dffbe81SSegher Boessenkoolboard-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1518 5dffbe81SSegher Boessenkoolboard-dirs := $(sort $(notdir $(board-dirs:/=))) 1519 1da177e4SLinus Torvalds 1520 fe69b420SMasahiro YamadaPHONY += help 1521 1da177e4SLinus Torvaldshelp: 1522 1da177e4SLinus Torvalds @echo 'Cleaning targets:' 1523 5ea084efSSamuel Tardieu @echo ' clean - Remove most generated files but keep the config and' 1524 5cc8d246SJesper Juhl @echo ' enough build support to build external modules' 1525 5ea084efSSamuel Tardieu @echo ' mrproper - Remove all generated files + config + various backup files' 1526 5cc8d246SJesper Juhl @echo ' distclean - mrproper + remove editor backup and patch files' 1527 1da177e4SLinus Torvalds @echo '' 1528 1da177e4SLinus Torvalds @echo 'Configuration targets:' 1529 1da177e4SLinus Torvalds @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1530 1da177e4SLinus Torvalds @echo '' 1531 1da177e4SLinus Torvalds @echo 'Other generic targets:' 1532 1da177e4SLinus Torvalds @echo ' all - Build all targets marked with [*]' 1533 1da177e4SLinus Torvalds @echo '* vmlinux - Build the bare kernel' 1534 1da177e4SLinus Torvalds @echo '* modules - Build all modules' 1535 9cc5d74cSBodo Eggert @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1536 1da177e4SLinus Torvalds @echo ' dir/ - Build all files in dir and below' 1537 40ab87a4SWang YanQing @echo ' dir/file.[ois] - Build specified target only' 1538 433db3e2SVinÃcius Tinti @echo ' dir/file.ll - Build the LLVM assembly file' 1539 433db3e2SVinÃcius Tinti @echo ' (requires compiler support for LLVM assembly generation)' 1540 62718979SJoe Perches @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1541 62718979SJoe Perches @echo ' (requires a recent binutils and recent build (System.map))' 1542 155ad605SSam Ravnborg @echo ' dir/file.ko - Build module including final link' 1543 c4d5ee67SRobert P. J. Day @echo ' modules_prepare - Set up for building external modules' 1544 1da177e4SLinus Torvalds @echo ' tags/TAGS - Generate tags file for editors' 1545 1da177e4SLinus Torvalds @echo ' cscope - Generate cscope index' 1546 f4ed1009SJianbin Kang @echo ' gtags - Generate GNU GLOBAL index' 1547 3f1d9a6cSMichal Marek @echo ' kernelrelease - Output the release version string (use with make -s)' 1548 3f1d9a6cSMichal Marek @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1549 3f1d9a6cSMichal Marek @echo ' image_name - Output the image name (use with make -s)' 1550 2fb9b1bdSSam Ravnborg @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1551 59df3230SGeert Uytterhoeven echo ' (default: $(INSTALL_HDR_PATH))'; \ 1552 2fb9b1bdSSam Ravnborg echo '' 1553 31b8cc80SRandy Dunlap @echo 'Static analysers:' 1554 1da177e4SLinus Torvalds @echo ' checkstack - Generate a list of stack hogs' 1555 1da177e4SLinus Torvalds @echo ' namespacecheck - Name space analysis on compiled kernel' 1556 aa025e7dSSam Ravnborg @echo ' versioncheck - Sanity check on version.h usage' 1557 ec2d987fSRandy Dunlap @echo ' includecheck - Check for duplicate included header files' 1558 295ac051SAdrian Bunk @echo ' export_report - List the usages of all exported symbols' 1559 74425eeeSNicolas Palix @echo ' headerdep - Detect inclusion cycles in headers' 1560 7f855fc8SMasahiro Yamada @echo ' coccicheck - Check with Coccinelle' 1561 74425eeeSNicolas Palix @echo '' 1562 eb8305aeSMatthias Maennich @echo 'Tools:' 1563 eb8305aeSMatthias Maennich @echo ' nsdeps - Generate missing symbol namespace dependencies' 1564 eb8305aeSMatthias Maennich @echo '' 1565 31b8cc80SRandy Dunlap @echo 'Kernel selftest:' 1566 e51d8dacSShuah Khan @echo ' kselftest - Build and run kernel selftest' 1567 5a5da78bSShuah Khan @echo ' Build, install, and boot kernel before' 1568 5a5da78bSShuah Khan @echo ' running kselftest on it' 1569 e51d8dacSShuah Khan @echo ' Run as root for full coverage' 1570 e51d8dacSShuah Khan @echo ' kselftest-all - Build kernel selftest' 1571 e51d8dacSShuah Khan @echo ' kselftest-install - Build and install kernel selftest' 1572 dcb825a9SWang Long @echo ' kselftest-clean - Remove all generated kselftest files' 1573 e51d8dacSShuah Khan @echo ' kselftest-merge - Merge all the config dependencies of' 1574 e51d8dacSShuah Khan @echo ' kselftest to existing .config.' 1575 5a5da78bSShuah Khan @echo '' 1576 37c8a5faSRob Herring @$(if $(dtstree), \ 1577 37c8a5faSRob Herring echo 'Devicetree:'; \ 1578 37c8a5faSRob Herring echo '* dtbs - Build device tree blobs for enabled boards'; \ 1579 37c8a5faSRob Herring echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ 1580 7aa8dd91SStephen Boyd echo ' dt_binding_check - Validate device tree binding documents'; \ 1581 7aa8dd91SStephen Boyd echo ' dtbs_check - Validate device tree source files';\ 1582 37c8a5faSRob Herring echo '') 1583 37c8a5faSRob Herring 1584 31b8cc80SRandy Dunlap @echo 'Userspace tools targets:' 1585 31b8cc80SRandy Dunlap @echo ' use "make tools/help"' 1586 31b8cc80SRandy Dunlap @echo ' or "cd tools; make help"' 1587 31b8cc80SRandy Dunlap @echo '' 1588 1da177e4SLinus Torvalds @echo 'Kernel packaging:' 1589 000ec95fSMasahiro Yamada @$(MAKE) -f $(srctree)/scripts/Makefile.package help 1590 1da177e4SLinus Torvalds @echo '' 1591 1da177e4SLinus Torvalds @echo 'Documentation targets:' 1592 cb43fb57SMauro Carvalho Chehab @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1593 1da177e4SLinus Torvalds @echo '' 1594 01dee188SAndres Salomon @echo 'Architecture specific targets ($(SRCARCH)):' 1595 1da177e4SLinus Torvalds @$(if $(archhelp),$(archhelp),\ 1596 01dee188SAndres Salomon echo ' No architecture specific help defined for $(SRCARCH)') 1597 1da177e4SLinus Torvalds @echo '' 1598 1da177e4SLinus Torvalds @$(if $(boards), \ 1599 1da177e4SLinus Torvalds $(foreach b, $(boards), \ 1600 4234448bSGeert Uytterhoeven printf " %-27s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1601 1da177e4SLinus Torvalds echo '') 1602 5dffbe81SSegher Boessenkool @$(if $(board-dirs), \ 1603 5dffbe81SSegher Boessenkool $(foreach b, $(board-dirs), \ 1604 5dffbe81SSegher Boessenkool printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1605 5dffbe81SSegher Boessenkool printf " %-16s - Show all of the above\\n" help-boards; \ 1606 5dffbe81SSegher Boessenkool echo '') 1607 1da177e4SLinus Torvalds 1608 1da177e4SLinus Torvalds @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1609 45d506bdSSam Ravnborg @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1610 1da177e4SLinus Torvalds @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1611 a64c0440SGeert Uytterhoeven @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK' 1612 a64c0440SGeert Uytterhoeven @echo ' (sparse by default)' 1613 701842e3SDustin Kirkland @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1614 af07ce3eSIngo Molnar @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1615 e27128dbSMasahiro Yamada @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where' 1616 28bc20dcSSam Ravnborg @echo ' 1: warnings which may be relevant and do not occur too often' 1617 28bc20dcSSam Ravnborg @echo ' 2: warnings which occur quite often but may still be relevant' 1618 28bc20dcSSam Ravnborg @echo ' 3: more obscure warnings, can most likely be ignored' 1619 a6de553dSMichal Marek @echo ' Multiple levels can be combined with W=12 or W=123' 1620 1da177e4SLinus Torvalds @echo '' 1621 1da177e4SLinus Torvalds @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1622 1da177e4SLinus Torvalds @echo 'For further info see the ./README file' 1623 1da177e4SLinus Torvalds 1624 1da177e4SLinus Torvalds 1625 5dffbe81SSegher Boessenkoolhelp-board-dirs := $(addprefix help-,$(board-dirs)) 1626 5dffbe81SSegher Boessenkool 1627 5dffbe81SSegher Boessenkoolhelp-boards: $(help-board-dirs) 1628 5dffbe81SSegher Boessenkool 1629 fbae4d58SMichal Marekboards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1630 5dffbe81SSegher Boessenkool 1631 5dffbe81SSegher Boessenkool$(help-board-dirs): help-%: 1632 5dffbe81SSegher Boessenkool @echo 'Architecture specific targets ($(SRCARCH) $*):' 1633 5dffbe81SSegher Boessenkool @$(if $(boards-per-dir), \ 1634 5dffbe81SSegher Boessenkool $(foreach b, $(boards-per-dir), \ 1635 5dffbe81SSegher Boessenkool printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1636 5dffbe81SSegher Boessenkool echo '') 1637 5dffbe81SSegher Boessenkool 1638 5dffbe81SSegher Boessenkool 1639 1da177e4SLinus Torvalds# Documentation targets 1640 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1641 e8939222SJani NikulaDOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1642 e8939222SJani Nikula linkcheckdocs dochelp refcheckdocs 1643 22cba31bSJani NikulaPHONY += $(DOC_TARGETS) 1644 bc7b752aSMasahiro Yamada$(DOC_TARGETS): 1645 cb43fb57SMauro Carvalho Chehab $(Q)$(MAKE) $(build)=Documentation $@ 1646 1da177e4SLinus Torvalds 1647 67274c08SMasahiro Yamada# Misc 1648 67274c08SMasahiro Yamada# --------------------------------------------------------------------------- 1649 67274c08SMasahiro Yamada 1650 67274c08SMasahiro YamadaPHONY += scripts_gdb 1651 7a739ce5SMasahiro Yamadascripts_gdb: prepare0 1652 1e5ff84fSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts/gdb 1653 8d2e5200SMasahiro Yamada $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) 1654 67274c08SMasahiro Yamada 1655 67274c08SMasahiro Yamadaifdef CONFIG_GDB_SCRIPTS 1656 67274c08SMasahiro Yamadaall: scripts_gdb 1657 67274c08SMasahiro Yamadaendif 1658 67274c08SMasahiro Yamada 1659 1da177e4SLinus Torvaldselse # KBUILD_EXTMOD 1660 1da177e4SLinus Torvalds 1661 1da177e4SLinus Torvalds### 1662 1da177e4SLinus Torvalds# External module support. 1663 1da177e4SLinus Torvalds# When building external modules the kernel used as basis is considered 1664 1da177e4SLinus Torvalds# read-only, and no consistency checks are made and the make 1665 1da177e4SLinus Torvalds# system is not used on the basis kernel. If updates are required 1666 1da177e4SLinus Torvalds# in the basis kernel ordinary make commands (without M=...) must 1667 1da177e4SLinus Torvalds# be used. 1668 1da177e4SLinus Torvalds# 1669 1da177e4SLinus Torvalds# The following are the only valid targets when building external 1670 1da177e4SLinus Torvalds# modules. 1671 1da177e4SLinus Torvalds# make M=dir clean Delete all automatically generated files 1672 1da177e4SLinus Torvalds# make M=dir modules Make all modules in specified dir 1673 1da177e4SLinus Torvalds# make M=dir Same as 'make M=dir modules' 1674 1da177e4SLinus Torvalds# make M=dir modules_install 1675 070b98bfSSam Ravnborg# Install the modules built in the module directory 1676 1da177e4SLinus Torvalds# Assumes install directory is already created 1677 1da177e4SLinus Torvalds 1678 1da177e4SLinus Torvalds# We are always building modules 1679 1da177e4SLinus TorvaldsKBUILD_MODULES := 1 1680 1da177e4SLinus Torvalds 1681 c99f3918SMasahiro Yamadabuild-dirs := $(KBUILD_EXTMOD) 1682 c99f3918SMasahiro YamadaPHONY += modules 1683 48a0f727SMasahiro Yamadamodules: descend 1684 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1685 1da177e4SLinus Torvalds 1686 4f193362SPaul SmithPHONY += modules_install 1687 a67dc21aSSam Ravnborgmodules_install: _emodinst_ _emodinst_post 1688 a67dc21aSSam Ravnborg 1689 a67dc21aSSam Ravnborginstall-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1690 4f193362SPaul SmithPHONY += _emodinst_ 1691 a67dc21aSSam Ravnborg_emodinst_: 1692 a67dc21aSSam Ravnborg $(Q)mkdir -p $(MODLIB)/$(install-dir) 1693 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1694 1da177e4SLinus Torvalds 1695 4f193362SPaul SmithPHONY += _emodinst_post 1696 a67dc21aSSam Ravnborg_emodinst_post: _emodinst_ 1697 a67dc21aSSam Ravnborg $(call cmd,depmod) 1698 a67dc21aSSam Ravnborg 1699 76cd306dSMasahiro Yamadaclean-dirs := $(KBUILD_EXTMOD) 1700 bc35d4bdSMasahiro Yamadaclean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps 1701 1da177e4SLinus Torvalds 1702 fe69b420SMasahiro YamadaPHONY += help 1703 1da177e4SLinus Torvaldshelp: 1704 1da177e4SLinus Torvalds @echo ' Building external modules.' 1705 1da177e4SLinus Torvalds @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1706 1da177e4SLinus Torvalds @echo '' 1707 1da177e4SLinus Torvalds @echo ' modules - default target, build the module(s)' 1708 1da177e4SLinus Torvalds @echo ' modules_install - install the module' 1709 1da177e4SLinus Torvalds @echo ' clean - remove generated files in module directory only' 1710 1da177e4SLinus Torvalds @echo '' 1711 06300b21SSam Ravnborg 1712 059bc9fcSMasahiro YamadaPHONY += prepare 1713 1da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 1714 1da177e4SLinus Torvalds 1715 b1fbfcb4SMasahiro Yamada# Single targets 1716 b1fbfcb4SMasahiro Yamada# --------------------------------------------------------------------------- 1717 b1fbfcb4SMasahiro Yamada# To build individual files in subdirectories, you can do like this: 1718 b1fbfcb4SMasahiro Yamada# 1719 b1fbfcb4SMasahiro Yamada# make foo/bar/baz.s 1720 b1fbfcb4SMasahiro Yamada# 1721 b1fbfcb4SMasahiro Yamada# The supported suffixes for single-target are listed in 'single-targets' 1722 b1fbfcb4SMasahiro Yamada# 1723 b1fbfcb4SMasahiro Yamada# To build only under specific subdirectories, you can do like this: 1724 b1fbfcb4SMasahiro Yamada# 1725 b1fbfcb4SMasahiro Yamada# make foo/bar/baz/ 1726 b1fbfcb4SMasahiro Yamada 1727 b1fbfcb4SMasahiro Yamadaifdef single-build 1728 b1fbfcb4SMasahiro Yamada 1729 b1fbfcb4SMasahiro Yamada# .ko is special because modpost is needed 1730 b1fbfcb4SMasahiro Yamadasingle-ko := $(sort $(filter %.ko, $(MAKECMDGOALS))) 1731 b1fbfcb4SMasahiro Yamadasingle-no-ko := $(sort $(patsubst %.ko,%.mod, $(MAKECMDGOALS))) 1732 b1fbfcb4SMasahiro Yamada 1733 b1fbfcb4SMasahiro Yamada$(single-ko): single_modpost 1734 b1fbfcb4SMasahiro Yamada @: 1735 b1fbfcb4SMasahiro Yamada$(single-no-ko): descend 1736 b1fbfcb4SMasahiro Yamada @: 1737 b1fbfcb4SMasahiro Yamada 1738 b1fbfcb4SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 1739 b1fbfcb4SMasahiro Yamada# For the single build of in-tree modules, use a temporary file to avoid 1740 b1fbfcb4SMasahiro Yamada# the situation of modules_install installing an invalid modules.order. 1741 b1fbfcb4SMasahiro YamadaMODORDER := .modules.tmp 1742 b1fbfcb4SMasahiro Yamadaendif 1743 b1fbfcb4SMasahiro Yamada 1744 b1fbfcb4SMasahiro YamadaPHONY += single_modpost 1745 b1fbfcb4SMasahiro Yamadasingle_modpost: $(single-no-ko) 1746 b1fbfcb4SMasahiro Yamada $(Q){ $(foreach m, $(single-ko), echo $(extmod-prefix)$m;) } > $(MODORDER) 1747 b1fbfcb4SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1748 b1fbfcb4SMasahiro Yamada 1749 b1fbfcb4SMasahiro YamadaKBUILD_MODULES := 1 1750 b1fbfcb4SMasahiro Yamada 1751 b1fbfcb4SMasahiro Yamadaexport KBUILD_SINGLE_TARGETS := $(addprefix $(extmod-prefix), $(single-no-ko)) 1752 b1fbfcb4SMasahiro Yamada 1753 b1fbfcb4SMasahiro Yamada# trim unrelated directories 1754 b1fbfcb4SMasahiro Yamadabuild-dirs := $(foreach d, $(build-dirs), \ 1755 b1fbfcb4SMasahiro Yamada $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d))) 1756 b1fbfcb4SMasahiro Yamada 1757 b1fbfcb4SMasahiro Yamadaendif 1758 b1fbfcb4SMasahiro Yamada 1759 b480fec9SMasahiro Yamadaifndef CONFIG_MODULES 1760 b480fec9SMasahiro YamadaKBUILD_MODULES := 1761 b480fec9SMasahiro Yamadaendif 1762 b480fec9SMasahiro Yamada 1763 c99f3918SMasahiro Yamada# Handle descending into subdirectories listed in $(build-dirs) 1764 c99f3918SMasahiro Yamada# Preset locale variables to speed up the build process. Limit locale 1765 c99f3918SMasahiro Yamada# tweaks to this spot to avoid wrong language settings when running 1766 c99f3918SMasahiro Yamada# make menuconfig etc. 1767 c99f3918SMasahiro Yamada# Error messages still appears in the original language 1768 c99f3918SMasahiro YamadaPHONY += descend $(build-dirs) 1769 c99f3918SMasahiro Yamadadescend: $(build-dirs) 1770 c99f3918SMasahiro Yamada$(build-dirs): prepare 1771 b1fbfcb4SMasahiro Yamada $(Q)$(MAKE) $(build)=$@ \ 1772 f566e1fbSMasahiro Yamada single-build=$(if $(filter-out $@/, $(filter $@/%, $(single-no-ko))),1) \ 1773 b1fbfcb4SMasahiro Yamada need-builtin=1 need-modorder=1 1774 c99f3918SMasahiro Yamada 1775 76cd306dSMasahiro Yamadaclean-dirs := $(addprefix _clean_, $(clean-dirs)) 1776 76cd306dSMasahiro YamadaPHONY += $(clean-dirs) clean 1777 76cd306dSMasahiro Yamada$(clean-dirs): 1778 76cd306dSMasahiro Yamada $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1779 76cd306dSMasahiro Yamada 1780 88d7be03SMichal Marekclean: $(clean-dirs) 1781 88d7be03SMichal Marek $(call cmd,rmfiles) 1782 43f67c98SKevin Cernekee @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1783 ef46d9b3SMasahiro Yamada \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ 1784 4f0e3a57SRob Herring -o -name '*.ko.*' \ 1785 4f0e3a57SRob Herring -o -name '*.dtb' -o -name '*.dtb.S' -o -name '*.dt.yaml' \ 1786 ef46d9b3SMasahiro Yamada -o -name '*.dwo' -o -name '*.lst' \ 1787 bbc55bdeSMasahiro Yamada -o -name '*.su' -o -name '*.mod' \ 1788 88d7be03SMichal Marek -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1789 9a8dfb39SMasahiro Yamada -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 1790 4fa8bc94SMasahiro Yamada -o -name '*.asn1.[ch]' \ 1791 88d7be03SMichal Marek -o -name '*.symtypes' -o -name 'modules.order' \ 1792 8b41fc44SMasahiro Yamada -o -name '.tmp_*.o.*' \ 1793 6b90bd4bSEmese Revfy -o -name '*.c.[012]*.*' \ 1794 433db3e2SVinÃcius Tinti -o -name '*.ll' \ 1795 88d7be03SMichal Marek -o -name '*.gcno' \) -type f -print | xargs rm -f 1796 88d7be03SMichal Marek 1797 1da177e4SLinus Torvalds# Generate tags for editors 1798 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1799 a680eedcSSam Ravnborgquiet_cmd_tags = GEN $@ 1800 858805b3SMasahiro Yamada cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@ 1801 1da177e4SLinus Torvalds 1802 f4ed1009SJianbin Kangtags TAGS cscope gtags: FORCE 1803 1da177e4SLinus Torvalds $(call cmd,tags) 1804 1da177e4SLinus Torvalds 1805 eb8305aeSMatthias Maennich# Script to generate missing namespace dependencies 1806 eb8305aeSMatthias Maennich# --------------------------------------------------------------------------- 1807 eb8305aeSMatthias Maennich 1808 eb8305aeSMatthias MaennichPHONY += nsdeps 1809 bff9c62bSMasahiro Yamadansdeps: export KBUILD_NSDEPS=1 1810 eb8305aeSMatthias Maennichnsdeps: modules 1811 bff9c62bSMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/nsdeps 1812 eb8305aeSMatthias Maennich 1813 1da177e4SLinus Torvalds# Scripts to check various things for consistency 1814 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1815 1da177e4SLinus Torvalds 1816 279f3dd3SPeter FoleyPHONY += includecheck versioncheck coccicheck namespacecheck export_report 1817 279f3dd3SPeter Foley 1818 1da177e4SLinus Torvaldsincludecheck: 1819 436f876cSPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 1820 1da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 1821 80007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1822 1da177e4SLinus Torvalds 1823 1da177e4SLinus Torvaldsversioncheck: 1824 2ee2d292SPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 1825 1da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 1826 80007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1827 1da177e4SLinus Torvalds 1828 74425eeeSNicolas Palixcoccicheck: 1829 858805b3SMasahiro Yamada $(Q)$(BASH) $(srctree)/scripts/$@ 1830 74425eeeSNicolas Palix 1831 1da177e4SLinus Torvaldsnamespacecheck: 1832 1da177e4SLinus Torvalds $(PERL) $(srctree)/scripts/namespace.pl 1833 1da177e4SLinus Torvalds 1834 295ac051SAdrian Bunkexport_report: 1835 295ac051SAdrian Bunk $(PERL) $(srctree)/scripts/export_report.pl 1836 295ac051SAdrian Bunk 1837 c398ff00SMike MarciniszynPHONY += checkstack kernelrelease kernelversion image_name 1838 e3ccf6e3SJeff Dike 1839 011e3a9aSJeff Dike# UML needs a little special treatment here. It wants to use the host 1840 011e3a9aSJeff Dike# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1841 011e3a9aSJeff Dike# else wants $(ARCH), including people doing cross-builds, which means 1842 011e3a9aSJeff Dike# that $(SUBARCH) doesn't work here. 1843 011e3a9aSJeff Dikeifeq ($(ARCH), um) 1844 011e3a9aSJeff DikeCHECKSTACK_ARCH := $(SUBARCH) 1845 011e3a9aSJeff Dikeelse 1846 011e3a9aSJeff DikeCHECKSTACK_ARCH := $(ARCH) 1847 011e3a9aSJeff Dikeendif 1848 1da177e4SLinus Torvaldscheckstack: 1849 1da177e4SLinus Torvalds $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1850 75dd4747SMasahiro Yamada $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1851 1da177e4SLinus Torvalds 1852 7b8ea53dSAmerigo Wangkernelrelease: 1853 7b8ea53dSAmerigo Wang @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1854 01ab1788SAmerigo Wang 1855 cb58455cSSam Ravnborgkernelversion: 1856 2244cbd8SSam Ravnborg @echo $(KERNELVERSION) 1857 1da177e4SLinus Torvalds 1858 c398ff00SMike Marciniszynimage_name: 1859 c398ff00SMike Marciniszyn @echo $(KBUILD_IMAGE) 1860 c398ff00SMike Marciniszyn 1861 ea01fa9fSBorislav Petkov# Clear a bunch of variables before executing the submake 1862 f47a23ceSMasahiro Yamada 1863 f47a23ceSMasahiro Yamadaifeq ($(quiet),silent_) 1864 f47a23ceSMasahiro Yamadatools_silent=s 1865 f47a23ceSMasahiro Yamadaendif 1866 f47a23ceSMasahiro Yamada 1867 ea01fa9fSBorislav Petkovtools/: FORCE 1868 bf35182fSDavid Howells $(Q)mkdir -p $(objtree)/tools 1869 75dd4747SMasahiro Yamada $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ 1870 ea01fa9fSBorislav Petkov 1871 ea01fa9fSBorislav Petkovtools/%: FORCE 1872 bf35182fSDavid Howells $(Q)mkdir -p $(objtree)/tools 1873 75dd4747SMasahiro Yamada $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ $* 1874 ea01fa9fSBorislav Petkov 1875 1da177e4SLinus Torvaldsquiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1876 0663c68cSMasahiro Yamada cmd_rmfiles = rm -rf $(rm-files) 1877 1da177e4SLinus Torvalds 1878 bc3c26feSUwe Kleine-König# Run depmod only if we have System.map and depmod is executable 1879 50a8ec31SSam Ravnborgquiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1880 569658ddSMichal Marek cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 1881 5a144a1aSMasahiro Yamada $(KERNELRELEASE) 1882 50a8ec31SSam Ravnborg 1883 392885eeSMasahiro Yamada# read saved command lines for existing targets 1884 392885eeSMasahiro Yamadaexisting-targets := $(wildcard $(sort $(targets))) 1885 1da177e4SLinus Torvalds 1886 b999923cSMasahiro Yamada-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 1887 1da177e4SLinus Torvalds 1888 46b7c492SSZ Lin (林上智)endif # config-build 1889 2042b548SMasahiro Yamadaendif # mixed-build 1890 688931a5SMasahiro Yamadaendif # need-sub-make 1891 1da177e4SLinus Torvalds 1892 4f193362SPaul SmithPHONY += FORCE 1893 1da177e4SLinus TorvaldsFORCE: 1894 4f193362SPaul Smith 1895 bd412d81SUlf Magnusson# Declare the contents of the PHONY variable as phony. We keep that 1896 fe8d0a41SKirill Smelkov# information in a variable so we can use it in if_changed and friends. 1897 4f193362SPaul Smith.PHONY: $(PHONY) 1898