1 b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 2 bfeffd15SLinus TorvaldsVERSION = 5 3 *8f3d9f35SLinus TorvaldsPATCHLEVEL = 7 4 55922c9dSLinus TorvaldsSUBLEVEL = 0 5 *8f3d9f35SLinus TorvaldsEXTRAVERSION = -rc1 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 ba634eceSMasahiro Yamada# That's our default target when none is given on the command line 15 ba634eceSMasahiro YamadaPHONY := _all 16 ba634eceSMasahiro Yamada_all: 17 ba634eceSMasahiro Yamada 18 1da177e4SLinus Torvalds# We are using a recursive build, so we need to do a little thinking 19 1da177e4SLinus Torvalds# to get the ordering right. 20 1da177e4SLinus Torvalds# 21 1da177e4SLinus Torvalds# Most importantly: sub-Makefiles should only ever modify files in 22 1da177e4SLinus Torvalds# their own directory. If in some directory we have a dependency on 23 1da177e4SLinus Torvalds# a file in another dir (which doesn't happen often, but it's often 24 f49821eeSNicholas Piggin# unavoidable when linking the built-in.a targets which finally 25 1da177e4SLinus Torvalds# turn into vmlinux), we will call a sub make in that other dir, and 26 1da177e4SLinus Torvalds# after that we are sure that everything which is in that other dir 27 1da177e4SLinus Torvalds# is now up to date. 28 1da177e4SLinus Torvalds# 29 1da177e4SLinus Torvalds# The only cases where we need to modify files which have global 30 1da177e4SLinus Torvalds# effects are thus separated out and done before the recursive 31 1da177e4SLinus Torvalds# descending is started. They are now explicitly listed as the 32 1da177e4SLinus Torvalds# prepare rule. 33 1da177e4SLinus Torvalds 34 221cc2d2SMasahiro Yamadaifneq ($(sub_make_done),1) 35 3812b8c5SMasahiro Yamada 36 3812b8c5SMasahiro Yamada# Do not use make's built-in rules and variables 37 3812b8c5SMasahiro Yamada# (this increases performance and avoids hard-to-debug behaviour) 38 3812b8c5SMasahiro YamadaMAKEFLAGS += -rR 39 3812b8c5SMasahiro Yamada 40 3812b8c5SMasahiro Yamada# Avoid funny character set dependencies 41 3812b8c5SMasahiro Yamadaunexport LC_ALL 42 3812b8c5SMasahiro YamadaLC_COLLATE=C 43 3812b8c5SMasahiro YamadaLC_NUMERIC=C 44 3812b8c5SMasahiro Yamadaexport LC_COLLATE LC_NUMERIC 45 3812b8c5SMasahiro Yamada 46 3812b8c5SMasahiro Yamada# Avoid interference with shell env settings 47 3812b8c5SMasahiro Yamadaunexport GREP_OPTIONS 48 3812b8c5SMasahiro Yamada 49 066b7ed9SMichal Marek# Beautify output 50 066b7ed9SMichal Marek# --------------------------------------------------------------------------- 51 066b7ed9SMichal Marek# 52 066b7ed9SMichal Marek# Normally, we echo the whole command before executing it. By making 53 066b7ed9SMichal Marek# that echo $($(quiet)$(cmd)), we now have the possibility to set 54 066b7ed9SMichal Marek# $(quiet) to choose other forms of output instead, e.g. 55 066b7ed9SMichal Marek# 56 066b7ed9SMichal Marek# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 57 066b7ed9SMichal Marek# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 58 066b7ed9SMichal Marek# 59 066b7ed9SMichal Marek# If $(quiet) is empty, the whole command will be printed. 60 066b7ed9SMichal Marek# If it is set to "quiet_", only the short version will be printed. 61 066b7ed9SMichal Marek# If it is set to "silent_", nothing will be printed at all, since 62 066b7ed9SMichal Marek# the variable $(silent_cmd_cc_o_c) doesn't exist. 63 066b7ed9SMichal Marek# 64 066b7ed9SMichal Marek# A simple variant is to prefix commands with $(Q) - that's useful 65 066b7ed9SMichal Marek# for commands that shall be hidden in non-verbose mode. 66 066b7ed9SMichal Marek# 67 066b7ed9SMichal Marek# $(Q)ln $@ :< 68 066b7ed9SMichal Marek# 69 066b7ed9SMichal Marek# If KBUILD_VERBOSE equals 0 then the above command will be hidden. 70 066b7ed9SMichal Marek# If KBUILD_VERBOSE equals 1 then the above command is displayed. 71 505b12b3SRandy Dunlap# If KBUILD_VERBOSE equals 2 then give the reason why each target is rebuilt. 72 066b7ed9SMichal Marek# 73 1da177e4SLinus Torvalds# To put more focus on warnings, be less verbose as default 74 1da177e4SLinus Torvalds# Use 'make V=1' to see the full commands 75 1da177e4SLinus Torvalds 76 1da177e4SLinus Torvaldsifeq ("$(origin V)", "command line") 77 1da177e4SLinus Torvalds KBUILD_VERBOSE = $(V) 78 1da177e4SLinus Torvaldsendif 79 1da177e4SLinus Torvaldsifndef KBUILD_VERBOSE 80 1da177e4SLinus Torvalds KBUILD_VERBOSE = 0 81 1da177e4SLinus Torvaldsendif 82 1da177e4SLinus Torvalds 83 066b7ed9SMichal Marekifeq ($(KBUILD_VERBOSE),1) 84 066b7ed9SMichal Marek quiet = 85 066b7ed9SMichal Marek Q = 86 066b7ed9SMichal Marekelse 87 066b7ed9SMichal Marek quiet=quiet_ 88 066b7ed9SMichal Marek Q = @ 89 066b7ed9SMichal Marekendif 90 066b7ed9SMichal Marek 91 066b7ed9SMichal Marek# If the user is running make -s (silent mode), suppress echoing of 92 066b7ed9SMichal Marek# commands 93 066b7ed9SMichal Marek 94 6f0fa58eSMasahiro Yamadaifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) 95 066b7ed9SMichal Marek quiet=silent_ 96 066b7ed9SMichal Marekendif 97 066b7ed9SMichal Marek 98 066b7ed9SMichal Marekexport quiet Q KBUILD_VERBOSE 99 066b7ed9SMichal Marek 100 25b146c5SMasahiro Yamada# Kbuild will save output files in the current working directory. 101 25b146c5SMasahiro Yamada# This does not need to match to the root of the kernel source tree. 102 25b146c5SMasahiro Yamada# 103 25b146c5SMasahiro Yamada# For example, you can do this: 104 25b146c5SMasahiro Yamada# 105 25b146c5SMasahiro Yamada# cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile 106 25b146c5SMasahiro Yamada# 107 25b146c5SMasahiro Yamada# If you want to save output files in a different location, there are 108 25b146c5SMasahiro Yamada# two syntaxes to specify it. 109 25b146c5SMasahiro Yamada# 110 1da177e4SLinus Torvalds# 1) O= 111 1da177e4SLinus Torvalds# Use "make O=dir/to/store/output/files/" 112 1da177e4SLinus Torvalds# 113 1da177e4SLinus Torvalds# 2) Set KBUILD_OUTPUT 114 25b146c5SMasahiro Yamada# Set the environment variable KBUILD_OUTPUT to point to the output directory. 115 25b146c5SMasahiro Yamada# export KBUILD_OUTPUT=dir/to/store/output/files/; make 116 1da177e4SLinus Torvalds# 117 1da177e4SLinus Torvalds# The O= assignment takes precedence over the KBUILD_OUTPUT environment 118 1da177e4SLinus Torvalds# variable. 119 1da177e4SLinus Torvalds 120 25b146c5SMasahiro Yamada# Do we want to change the working directory? 121 1da177e4SLinus Torvaldsifeq ("$(origin O)", "command line") 122 1da177e4SLinus Torvalds KBUILD_OUTPUT := $(O) 123 1da177e4SLinus Torvaldsendif 124 1da177e4SLinus Torvalds 125 25b146c5SMasahiro Yamadaifneq ($(KBUILD_OUTPUT),) 126 25b146c5SMasahiro Yamada# Make's built-in functions such as $(abspath ...), $(realpath ...) cannot 127 25b146c5SMasahiro Yamada# expand a shell special character '~'. We use a somewhat tedious way here. 128 25b146c5SMasahiro Yamadaabs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) 129 25b146c5SMasahiro Yamada$(if $(abs_objtree),, \ 130 25b146c5SMasahiro Yamada $(error failed to create output directory "$(KBUILD_OUTPUT)")) 131 25b146c5SMasahiro Yamada 132 25b146c5SMasahiro Yamada# $(realpath ...) resolves symlinks 133 25b146c5SMasahiro Yamadaabs_objtree := $(realpath $(abs_objtree)) 134 25b146c5SMasahiro Yamadaelse 135 25b146c5SMasahiro Yamadaabs_objtree := $(CURDIR) 136 25b146c5SMasahiro Yamadaendif # ifneq ($(KBUILD_OUTPUT),) 137 25b146c5SMasahiro Yamada 138 25b146c5SMasahiro Yamadaifeq ($(abs_objtree),$(CURDIR)) 139 25b146c5SMasahiro Yamada# Suppress "Entering directory ..." unless we are changing the work directory. 140 25b146c5SMasahiro YamadaMAKEFLAGS += --no-print-directory 141 25b146c5SMasahiro Yamadaelse 142 25b146c5SMasahiro Yamadaneed-sub-make := 1 143 51193b76SRobert Jarzmikendif 144 51193b76SRobert Jarzmik 145 25b146c5SMasahiro Yamadaabs_srctree := $(realpath $(dir $(lastword $(MAKEFILE_LIST)))) 146 1da177e4SLinus Torvalds 147 25b146c5SMasahiro Yamadaifneq ($(words $(subst :, ,$(abs_srctree))), 1) 148 25b146c5SMasahiro Yamada$(error source directory cannot contain spaces or colons) 149 25b146c5SMasahiro Yamadaendif 150 25b146c5SMasahiro Yamada 151 25b146c5SMasahiro Yamadaifneq ($(abs_srctree),$(abs_objtree)) 152 80463f1bSMasahiro Yamada# Look for make include files relative to root of kernel src 153 80463f1bSMasahiro Yamada# 154 80463f1bSMasahiro Yamada# This does not become effective immediately because MAKEFLAGS is re-parsed 155 25b146c5SMasahiro Yamada# once after the Makefile is read. We need to invoke sub-make. 156 25b146c5SMasahiro YamadaMAKEFLAGS += --include-dir=$(abs_srctree) 157 688931a5SMasahiro Yamadaneed-sub-make := 1 158 25b146c5SMasahiro Yamadaendif 159 3812b8c5SMasahiro Yamada 160 688931a5SMasahiro Yamadaifneq ($(filter 3.%,$(MAKE_VERSION)),) 161 688931a5SMasahiro Yamada# 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x 162 688931a5SMasahiro Yamada# We need to invoke sub-make to avoid implicit rules in the top Makefile. 163 688931a5SMasahiro Yamadaneed-sub-make := 1 164 688931a5SMasahiro Yamada# Cancel implicit rules for this Makefile. 165 688931a5SMasahiro Yamada$(lastword $(MAKEFILE_LIST)): ; 166 688931a5SMasahiro Yamadaendif 167 688931a5SMasahiro Yamada 168 25b146c5SMasahiro Yamadaexport abs_srctree abs_objtree 169 221cc2d2SMasahiro Yamadaexport sub_make_done := 1 170 221cc2d2SMasahiro Yamada 171 688931a5SMasahiro Yamadaifeq ($(need-sub-make),1) 172 688931a5SMasahiro Yamada 173 0b35786dSMilton MillerPHONY += $(MAKECMDGOALS) sub-make 174 0b35786dSMilton Miller 175 0209987fSMasahiro Yamada$(filter-out _all sub-make $(lastword $(MAKEFILE_LIST)), $(MAKECMDGOALS)) _all: sub-make 176 16f89098SCharles Keepax @: 177 0b35786dSMilton Miller 178 c4e6fff1SCao jin# Invoke a second make in the output directory, passing relevant variables 179 2e8d696bSMasahiro Yamadasub-make: 180 25b146c5SMasahiro Yamada $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS) 181 1da177e4SLinus Torvalds 182 688931a5SMasahiro Yamadaendif # need-sub-make 183 221cc2d2SMasahiro Yamadaendif # sub_make_done 184 688931a5SMasahiro Yamada 185 1da177e4SLinus Torvalds# We process the rest of the Makefile if this is the final invocation of make 186 688931a5SMasahiro Yamadaifeq ($(need-sub-make),) 187 1da177e4SLinus Torvalds 188 7ff52571SMasahiro Yamada# Do not print "Entering directory ...", 189 7ff52571SMasahiro Yamada# but we want to display it when entering to the output directory 190 7ff52571SMasahiro Yamada# so that IDEs/editors are able to understand relative filenames. 191 7ff52571SMasahiro YamadaMAKEFLAGS += --no-print-directory 192 7ff52571SMasahiro Yamada 193 aa55c8e2SMasahiro Yamada# Call a source code checker (by default, "sparse") as part of the 194 aa55c8e2SMasahiro Yamada# C compilation. 195 aa55c8e2SMasahiro Yamada# 196 aa55c8e2SMasahiro Yamada# Use 'make C=1' to enable checking of only re-compiled files. 197 aa55c8e2SMasahiro Yamada# Use 'make C=2' to enable checking of *all* source files, regardless 198 aa55c8e2SMasahiro Yamada# of whether they are re-compiled or not. 199 aa55c8e2SMasahiro Yamada# 200 036db11cSCao jin# See the file "Documentation/dev-tools/sparse.rst" for more details, 201 036db11cSCao jin# including where to get the "sparse" utility. 202 aa55c8e2SMasahiro Yamada 203 aa55c8e2SMasahiro Yamadaifeq ("$(origin C)", "command line") 204 aa55c8e2SMasahiro Yamada KBUILD_CHECKSRC = $(C) 205 aa55c8e2SMasahiro Yamadaendif 206 aa55c8e2SMasahiro Yamadaifndef KBUILD_CHECKSRC 207 aa55c8e2SMasahiro Yamada KBUILD_CHECKSRC = 0 208 aa55c8e2SMasahiro Yamadaendif 209 aa55c8e2SMasahiro Yamada 210 7e35b425SMasahiro Yamada# Use make M=dir or set the environment variable KBUILD_EXTMOD to specify the 211 7e35b425SMasahiro Yamada# directory of external module to build. Setting M= takes precedence. 212 aa55c8e2SMasahiro Yamadaifeq ("$(origin M)", "command line") 213 aa55c8e2SMasahiro Yamada KBUILD_EXTMOD := $(M) 214 aa55c8e2SMasahiro Yamadaendif 215 aa55c8e2SMasahiro Yamada 216 051f278eSMasahiro Yamadaexport KBUILD_CHECKSRC KBUILD_EXTMOD 217 051f278eSMasahiro Yamada 218 394053f4SMasahiro Yamadaextmod-prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/) 219 394053f4SMasahiro Yamada 220 25b146c5SMasahiro Yamadaifeq ($(abs_srctree),$(abs_objtree)) 221 9da0763bSMichal Marek # building in the source tree 222 9da0763bSMichal Marek srctree := . 223 051f278eSMasahiro Yamada building_out_of_srctree := 224 9da0763bSMichal Marekelse 225 25b146c5SMasahiro Yamada ifeq ($(abs_srctree)/,$(dir $(abs_objtree))) 226 9da0763bSMichal Marek # building in a subdirectory of the source tree 227 9da0763bSMichal Marek srctree := .. 228 9da0763bSMichal Marek else 229 25b146c5SMasahiro Yamada srctree := $(abs_srctree) 230 9da0763bSMichal Marek endif 231 051f278eSMasahiro Yamada building_out_of_srctree := 1 232 9da0763bSMichal Marekendif 233 2c1f4f12SMasahiro Yamada 234 95fd3f87SMasahiro Yamadaifneq ($(KBUILD_ABS_SRCTREE),) 235 95fd3f87SMasahiro Yamadasrctree := $(abs_srctree) 236 95fd3f87SMasahiro Yamadaendif 237 2c1f4f12SMasahiro Yamada 238 7e1c0477SMichal Marekobjtree := . 239 6b12de69SMasahiro YamadaVPATH := $(srctree) 240 1da177e4SLinus Torvalds 241 051f278eSMasahiro Yamadaexport building_out_of_srctree srctree objtree VPATH 242 1da177e4SLinus Torvalds 243 2c1f4f12SMasahiro Yamada# To make sure we do not include .config for any of the *config targets 244 2c1f4f12SMasahiro Yamada# catch them early, and hand them over to scripts/kconfig/Makefile 245 2c1f4f12SMasahiro Yamada# It is allowed to specify more targets when calling make, including 246 2c1f4f12SMasahiro Yamada# mixing *config targets and build targets. 247 2c1f4f12SMasahiro Yamada# For example 'make oldconfig all'. 248 2c1f4f12SMasahiro Yamada# Detect when mixed targets is specified, and make a second invocation 249 2c1f4f12SMasahiro Yamada# of make so .config is not included in this case either (for *config). 250 2c1f4f12SMasahiro Yamada 251 2c1f4f12SMasahiro Yamadaversion_h := include/generated/uapi/linux/version.h 252 2c1f4f12SMasahiro Yamadaold_version_h := include/linux/version.h 253 2c1f4f12SMasahiro Yamada 254 22340a06SMasahiro Yamadaclean-targets := %clean mrproper cleandocs 255 22340a06SMasahiro Yamadano-dot-config-targets := $(clean-targets) \ 256 2c1f4f12SMasahiro Yamada cscope gtags TAGS tags help% %docs check% coccicheck \ 257 59b2bd05SMasahiro Yamada $(version_h) headers headers_% archheaders archscripts \ 258 4623980dSDavid Engraf %asm-generic kernelversion %src-pkg dt_binding_check \ 259 4623980dSDavid Engraf outputmakefile 260 a29d4d8cSMasahiro Yamadano-sync-config-targets := $(no-dot-config-targets) install %install \ 261 a29d4d8cSMasahiro Yamada kernelrelease 262 394053f4SMasahiro Yamadasingle-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/ 263 2c1f4f12SMasahiro Yamada 264 2042b548SMasahiro Yamadaconfig-build := 265 2042b548SMasahiro Yamadamixed-build := 266 2042b548SMasahiro Yamadaneed-config := 1 267 d7942413SMasahiro Yamadamay-sync-config := 1 268 394053f4SMasahiro Yamadasingle-build := 269 2c1f4f12SMasahiro Yamada 270 2c1f4f12SMasahiro Yamadaifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 271 2c1f4f12SMasahiro Yamada ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 272 2042b548SMasahiro Yamada need-config := 273 2c1f4f12SMasahiro Yamada endif 274 2c1f4f12SMasahiro Yamadaendif 275 2c1f4f12SMasahiro Yamada 276 d7942413SMasahiro Yamadaifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) 277 d7942413SMasahiro Yamada ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) 278 2042b548SMasahiro Yamada may-sync-config := 279 d7942413SMasahiro Yamada endif 280 d7942413SMasahiro Yamadaendif 281 d7942413SMasahiro Yamada 282 d7942413SMasahiro Yamadaifneq ($(KBUILD_EXTMOD),) 283 2042b548SMasahiro Yamada may-sync-config := 284 d7942413SMasahiro Yamadaendif 285 d7942413SMasahiro Yamada 286 2c1f4f12SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 287 2c1f4f12SMasahiro Yamada ifneq ($(filter config %config,$(MAKECMDGOALS)),) 288 2042b548SMasahiro Yamada config-build := 1 289 2c1f4f12SMasahiro Yamada ifneq ($(words $(MAKECMDGOALS)),1) 290 2042b548SMasahiro Yamada mixed-build := 1 291 2c1f4f12SMasahiro Yamada endif 292 2c1f4f12SMasahiro Yamada endif 293 2c1f4f12SMasahiro Yamadaendif 294 22340a06SMasahiro Yamada 295 394053f4SMasahiro Yamada# We cannot build single targets and the others at the same time 296 394053f4SMasahiro Yamadaifneq ($(filter $(single-targets), $(MAKECMDGOALS)),) 297 394053f4SMasahiro Yamada single-build := 1 298 394053f4SMasahiro Yamada ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),) 299 394053f4SMasahiro Yamada mixed-build := 1 300 394053f4SMasahiro Yamada endif 301 394053f4SMasahiro Yamadaendif 302 394053f4SMasahiro Yamada 303 22340a06SMasahiro Yamada# For "make -j clean all", "make -j mrproper defconfig all", etc. 304 22340a06SMasahiro Yamadaifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 305 22340a06SMasahiro Yamada ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 306 2042b548SMasahiro Yamada mixed-build := 1 307 22340a06SMasahiro Yamada endif 308 22340a06SMasahiro Yamadaendif 309 22340a06SMasahiro Yamada 310 2c1f4f12SMasahiro Yamada# install and modules_install need also be processed one by one 311 2c1f4f12SMasahiro Yamadaifneq ($(filter install,$(MAKECMDGOALS)),) 312 2c1f4f12SMasahiro Yamada ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 313 2042b548SMasahiro Yamada mixed-build := 1 314 2c1f4f12SMasahiro Yamada endif 315 2c1f4f12SMasahiro Yamadaendif 316 2c1f4f12SMasahiro Yamada 317 2042b548SMasahiro Yamadaifdef mixed-build 318 2c1f4f12SMasahiro Yamada# =========================================================================== 319 2c1f4f12SMasahiro Yamada# We're called with mixed targets (*config and build targets). 320 2c1f4f12SMasahiro Yamada# Handle them one by one. 321 2c1f4f12SMasahiro Yamada 322 2c1f4f12SMasahiro YamadaPHONY += $(MAKECMDGOALS) __build_one_by_one 323 2c1f4f12SMasahiro Yamada 324 2c1f4f12SMasahiro Yamada$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 325 2c1f4f12SMasahiro Yamada @: 326 2c1f4f12SMasahiro Yamada 327 2c1f4f12SMasahiro Yamada__build_one_by_one: 328 2c1f4f12SMasahiro Yamada $(Q)set -e; \ 329 2c1f4f12SMasahiro Yamada for i in $(MAKECMDGOALS); do \ 330 2c1f4f12SMasahiro Yamada $(MAKE) -f $(srctree)/Makefile $$i; \ 331 2c1f4f12SMasahiro Yamada done 332 2c1f4f12SMasahiro Yamada 333 2042b548SMasahiro Yamadaelse # !mixed-build 334 2c1f4f12SMasahiro Yamada 335 2c1f4f12SMasahiro Yamadainclude scripts/Kbuild.include 336 2c1f4f12SMasahiro Yamada 337 2c1f4f12SMasahiro Yamada# Read KERNELRELEASE from include/config/kernel.release (if it exists) 338 2c1f4f12SMasahiro YamadaKERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 339 2c1f4f12SMasahiro YamadaKERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 340 2c1f4f12SMasahiro Yamadaexport VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 341 2c1f4f12SMasahiro Yamada 342 b2d35fa5SAnders Roxellinclude scripts/subarch.include 343 1da177e4SLinus Torvalds 344 1da177e4SLinus Torvalds# Cross compiling and selecting different set of gcc/bin-utils 345 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 346 1da177e4SLinus Torvalds# 347 1da177e4SLinus Torvalds# When performing cross compilation for other architectures ARCH shall be set 348 1da177e4SLinus Torvalds# to the target architecture. (See arch/* for the possibilities). 349 1da177e4SLinus Torvalds# ARCH can be set during invocation of make: 350 1da177e4SLinus Torvalds# make ARCH=ia64 351 1da177e4SLinus Torvalds# Another way is to have ARCH set in the environment. 352 1da177e4SLinus Torvalds# The default ARCH is the host where make is executed. 353 1da177e4SLinus Torvalds 354 1da177e4SLinus Torvalds# CROSS_COMPILE specify the prefix used for all executables used 355 1da177e4SLinus Torvalds# during compilation. Only gcc and related bin-utils executables 356 1da177e4SLinus Torvalds# are prefixed with $(CROSS_COMPILE). 357 1da177e4SLinus Torvalds# CROSS_COMPILE can be set on the command line 358 1da177e4SLinus Torvalds# make CROSS_COMPILE=ia64-linux- 359 1da177e4SLinus Torvalds# Alternatively CROSS_COMPILE can be set in the environment. 360 1da177e4SLinus Torvalds# Default value for CROSS_COMPILE is not to prefix executables 361 1da177e4SLinus Torvalds# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 362 2331d1a6SSam RavnborgARCH ?= $(SUBARCH) 363 1da177e4SLinus Torvalds 364 1da177e4SLinus Torvalds# Architecture as present in compile.h 365 1da177e4SLinus TorvaldsUTS_MACHINE := $(ARCH) 366 6752ed90SThomas GleixnerSRCARCH := $(ARCH) 367 1da177e4SLinus Torvalds 368 d746d647SSam Ravnborg# Additional ARCH settings for x86 369 d746d647SSam Ravnborgifeq ($(ARCH),i386) 370 d746d647SSam Ravnborg SRCARCH := x86 371 d746d647SSam Ravnborgendif 372 d746d647SSam Ravnborgifeq ($(ARCH),x86_64) 373 d746d647SSam Ravnborg SRCARCH := x86 374 d746d647SSam Ravnborgendif 375 74b469f2SSam Ravnborg 376 5e538790SSam Ravnborg# Additional ARCH settings for sparc 377 e69f58c0SNamhyung Kimifeq ($(ARCH),sparc32) 378 e69f58c0SNamhyung Kim SRCARCH := sparc 379 e69f58c0SNamhyung Kimendif 380 a439fe51SSam Ravnborgifeq ($(ARCH),sparc64) 381 5e538790SSam Ravnborg SRCARCH := sparc 382 a439fe51SSam Ravnborgendif 383 2fb9b1bdSSam Ravnborg 384 3cc000b5SPaul Mundt# Additional ARCH settings for sh 385 3cc000b5SPaul Mundtifeq ($(ARCH),sh64) 386 3cc000b5SPaul Mundt SRCARCH := sh 387 3cc000b5SPaul Mundtendif 388 3cc000b5SPaul Mundt 389 14cdd3c4SRoman ZippelKCONFIG_CONFIG ?= .config 390 41263fc6SBen Gardinerexport KCONFIG_CONFIG 391 14cdd3c4SRoman Zippel 392 2a86f661SMasahiro Yamada# Default file for 'make defconfig'. This may be overridden by arch-Makefile. 393 2a86f661SMasahiro Yamadaexport KBUILD_DEFCONFIG := defconfig 394 2a86f661SMasahiro Yamada 395 1da177e4SLinus Torvalds# SHELL used by kbuild 396 858805b3SMasahiro YamadaCONFIG_SHELL := sh 397 1da177e4SLinus Torvalds 398 6d79a7b4SMasahiro YamadaHOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 399 6d79a7b4SMasahiro YamadaHOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 400 6d79a7b4SMasahiro YamadaHOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 401 d7f14c66SUwe Kleine-König 402 a0d1c951SMasahiro Yamadaifneq ($(LLVM),) 403 a0d1c951SMasahiro YamadaHOSTCC = clang 404 a0d1c951SMasahiro YamadaHOSTCXX = clang++ 405 a0d1c951SMasahiro Yamadaelse 406 1da177e4SLinus TorvaldsHOSTCC = gcc 407 1da177e4SLinus TorvaldsHOSTCXX = g++ 408 a0d1c951SMasahiro Yamadaendif 409 96f14fe7SLaura AbbottKBUILD_HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \ 410 f92d19e0SLaura Abbott -fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) \ 411 f92d19e0SLaura Abbott $(HOSTCFLAGS) 412 735aab1eSMasahiro YamadaKBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 413 f92d19e0SLaura AbbottKBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 414 f92d19e0SLaura AbbottKBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 415 1da177e4SLinus Torvalds 416 1da177e4SLinus Torvalds# Make variables (CC, etc...) 417 1da177e4SLinus TorvaldsCPP = $(CC) -E 418 a0d1c951SMasahiro Yamadaifneq ($(LLVM),) 419 a0d1c951SMasahiro YamadaCC = clang 420 a0d1c951SMasahiro YamadaLD = ld.lld 421 a0d1c951SMasahiro YamadaAR = llvm-ar 422 a0d1c951SMasahiro YamadaNM = llvm-nm 423 a0d1c951SMasahiro YamadaOBJCOPY = llvm-objcopy 424 a0d1c951SMasahiro YamadaOBJDUMP = llvm-objdump 425 a0d1c951SMasahiro YamadaREADELF = llvm-readelf 426 a0d1c951SMasahiro YamadaOBJSIZE = llvm-size 427 a0d1c951SMasahiro YamadaSTRIP = llvm-strip 428 a0d1c951SMasahiro Yamadaelse 429 a0d1c951SMasahiro YamadaCC = $(CROSS_COMPILE)gcc 430 a0d1c951SMasahiro YamadaLD = $(CROSS_COMPILE)ld 431 1da177e4SLinus TorvaldsAR = $(CROSS_COMPILE)ar 432 1da177e4SLinus TorvaldsNM = $(CROSS_COMPILE)nm 433 1da177e4SLinus TorvaldsOBJCOPY = $(CROSS_COMPILE)objcopy 434 1da177e4SLinus TorvaldsOBJDUMP = $(CROSS_COMPILE)objdump 435 eefb8c12SDmitry GolovinREADELF = $(CROSS_COMPILE)readelf 436 a0d1c951SMasahiro YamadaOBJSIZE = $(CROSS_COMPILE)size 437 a0d1c951SMasahiro YamadaSTRIP = $(CROSS_COMPILE)strip 438 a0d1c951SMasahiro Yamadaendif 439 e83b9f55SAndrii NakryikoPAHOLE = pahole 440 73a4f6dbSMasahiro YamadaLEX = flex 441 73a4f6dbSMasahiro YamadaYACC = bison 442 1da177e4SLinus TorvaldsAWK = awk 443 caa27b66SSam RavnborgINSTALLKERNEL := installkernel 444 1da177e4SLinus TorvaldsDEPMOD = /sbin/depmod 445 1da177e4SLinus TorvaldsPERL = perl 446 011bf125SMasahiro YamadaPYTHON = python 447 e9781b52SMasahiro YamadaPYTHON3 = python3 448 1da177e4SLinus TorvaldsCHECK = sparse 449 858805b3SMasahiro YamadaBASH = bash 450 1da177e4SLinus Torvalds 451 80a7d1d9SHannes EderCHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 452 6c49f359SLuc Van Oostenryck -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 453 0c22be07SDouglas AndersonNOSTDINC_FLAGS := 454 6588169dSSam RavnborgCFLAGS_MODULE = 455 6588169dSSam RavnborgAFLAGS_MODULE = 456 6588169dSSam RavnborgLDFLAGS_MODULE = 457 1da177e4SLinus TorvaldsCFLAGS_KERNEL = 458 1da177e4SLinus TorvaldsAFLAGS_KERNEL = 459 b36fad65SMichal MarekLDFLAGS_vmlinux = 460 1da177e4SLinus Torvalds 461 abbf1590SDavid Howells# Use USERINCLUDE when you must reference the UAPI directories only. 462 abbf1590SDavid HowellsUSERINCLUDE := \ 463 9d022c54SMasahiro Yamada -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 464 9d022c54SMasahiro Yamada -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 465 abbf1590SDavid Howells -I$(srctree)/include/uapi \ 466 3308b285SArnd Bergmann -I$(objtree)/include/generated/uapi \ 467 abbf1590SDavid Howells -include $(srctree)/include/linux/kconfig.h 468 abbf1590SDavid Howells 469 1da177e4SLinus Torvalds# Use LINUXINCLUDE when you must reference the include/ directory. 470 1da177e4SLinus Torvalds# Needed to be compatible with the O= option 471 abbf1590SDavid HowellsLINUXINCLUDE := \ 472 9d022c54SMasahiro Yamada -I$(srctree)/arch/$(SRCARCH)/include \ 473 9d022c54SMasahiro Yamada -I$(objtree)/arch/$(SRCARCH)/include/generated \ 474 051f278eSMasahiro Yamada $(if $(building_out_of_srctree),-I$(srctree)/include) \ 475 f8224f7fSMasahiro Yamada -I$(objtree)/include \ 476 f8224f7fSMasahiro Yamada $(USERINCLUDE) 477 1da177e4SLinus Torvalds 478 42a92bccSMasahiro YamadaKBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 479 eeb5687aSMasahiro YamadaKBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ 480 42a92bccSMasahiro Yamada -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ 481 b89f25eaSLuc Van Oostenryck -Werror=implicit-function-declaration -Werror=implicit-int \ 482 51b97e35SKirill A. Shutemov -Wno-format-security \ 483 433dc2ebSMasahiro Yamada -std=gnu89 484 433dc2ebSMasahiro YamadaKBUILD_CPPFLAGS := -D__KERNEL__ 485 80c00ba9SSam RavnborgKBUILD_AFLAGS_KERNEL := 486 80c00ba9SSam RavnborgKBUILD_CFLAGS_KERNEL := 487 6588169dSSam RavnborgKBUILD_AFLAGS_MODULE := -DMODULE 488 6588169dSSam RavnborgKBUILD_CFLAGS_MODULE := -DMODULE 489 10df0638SMasahiro YamadaKBUILD_LDFLAGS_MODULE := 490 10df0638SMasahiro Yamadaexport KBUILD_LDS_MODULE := $(srctree)/scripts/module-common.lds 491 d503ac53SMasahiro YamadaKBUILD_LDFLAGS := 492 433dc2ebSMasahiro YamadaGCC_PLUGINS_CFLAGS := 493 5241ab4cSMasahiro YamadaCLANG_FLAGS := 494 1da177e4SLinus Torvalds 495 aa824e0cSMasahiro Yamadaexport ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC 496 eefb8c12SDmitry Golovinexport CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF PAHOLE LEX YACC AWK INSTALLKERNEL 497 94f7345bSMasahiro Yamadaexport PERL PYTHON PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX 498 7bac9870SVasily Gorbikexport KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE 499 1da177e4SLinus Torvalds 500 d503ac53SMasahiro Yamadaexport KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 501 0e410e15SAndrey Konovalovexport KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 502 0e410e15SAndrey Konovalovexport CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN 503 222d394dSSam Ravnborgexport KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 504 6588169dSSam Ravnborgexport KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 505 80c00ba9SSam Ravnborgexport KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 506 1da177e4SLinus Torvalds 507 1da177e4SLinus Torvalds# Files to ignore in find ... statements 508 1da177e4SLinus Torvalds 509 ae63b2d7SPrarit Bhargavaexport RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 510 ae63b2d7SPrarit Bhargava -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 511 ae63b2d7SPrarit Bhargava -prune -o 512 450c6076SJesper Juhlexport RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 513 450c6076SJesper Juhl --exclude CVS --exclude .pc --exclude .hg --exclude .git 514 1da177e4SLinus Torvalds 515 1da177e4SLinus Torvalds# =========================================================================== 516 1da177e4SLinus Torvalds# Rules shared between *config targets and build targets 517 1da177e4SLinus Torvalds 518 312a3d09SCao jin# Basic helpers built in scripts/basic/ 519 4f193362SPaul SmithPHONY += scripts_basic 520 1da177e4SLinus Torvaldsscripts_basic: 521 1da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/basic 522 638adb05SSteven Rostedt $(Q)rm -f .tmp_quiet_recordmcount 523 1da177e4SLinus Torvalds 524 4f193362SPaul SmithPHONY += outputmakefile 525 e8e83a23SMasahiro Yamada# Before starting out-of-tree build, make sure the source tree is clean. 526 fd5f0cd6SJan Beulich# outputmakefile generates a Makefile in the output directory, if using a 527 fd5f0cd6SJan Beulich# separate output directory. This allows convenient use of make in the 528 fd5f0cd6SJan Beulich# output directory. 529 3a51ff34SVladimir Kondratiev# At the same time when output Makefile generated, generate .gitignore to 530 3a51ff34SVladimir Kondratiev# ignore whole output directory 531 1da177e4SLinus Torvaldsoutputmakefile: 532 051f278eSMasahiro Yamadaifdef building_out_of_srctree 533 e8e83a23SMasahiro Yamada $(Q)if [ -f $(srctree)/.config -o \ 534 e8e83a23SMasahiro Yamada -d $(srctree)/include/config -o \ 535 e8e83a23SMasahiro Yamada -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \ 536 e8e83a23SMasahiro Yamada echo >&2 "***"; \ 537 e8e83a23SMasahiro Yamada echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \ 538 e8e83a23SMasahiro Yamada echo >&2 "*** in $(abs_srctree)";\ 539 e8e83a23SMasahiro Yamada echo >&2 "***"; \ 540 e8e83a23SMasahiro Yamada false; \ 541 e8e83a23SMasahiro Yamada fi 542 92979997SAndi Kleen $(Q)ln -fsn $(srctree) source 543 4fd61277SMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) 544 156e7cbbSMasahiro Yamada $(Q)test -e .gitignore || \ 545 156e7cbbSMasahiro Yamada { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore 546 fd5f0cd6SJan Beulichendif 547 1da177e4SLinus Torvalds 548 99516742SMasahiro Yamadaifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),) 549 ae6b289aSChris Friesifneq ($(CROSS_COMPILE),) 550 5241ab4cSMasahiro YamadaCLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) 551 ad15006cSNick DesaulniersGCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) 552 238bcbc4SMasahiro YamadaCLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR) 553 ef8c4ed9SStefan AgnerGCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) 554 ae6b289aSChris Friesendif 555 ae6b289aSChris Friesifneq ($(GCC_TOOLCHAIN),) 556 238bcbc4SMasahiro YamadaCLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN) 557 ae6b289aSChris Friesendif 558 7e20e47cSMasahiro Yamadaifneq ($(LLVM_IAS),1) 559 238bcbc4SMasahiro YamadaCLANG_FLAGS += -no-integrated-as 560 876a0600SNathan Chancellorendif 561 589834b3SNathan ChancellorCLANG_FLAGS += -Werror=unknown-warning-option 562 238bcbc4SMasahiro YamadaKBUILD_CFLAGS += $(CLANG_FLAGS) 563 238bcbc4SMasahiro YamadaKBUILD_AFLAGS += $(CLANG_FLAGS) 564 3bd98050SJoel Stanleyexport CLANG_FLAGS 565 ae6b289aSChris Friesendif 566 ae6b289aSChris Fries 567 315bab4eSMasahiro Yamada# The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 568 315bab4eSMasahiro Yamada# Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 569 315bab4eSMasahiro Yamada# CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 570 315bab4eSMasahiro Yamada# and from include/config/auto.conf.cmd to detect the compiler upgrade. 571 902a6898SMasahiro YamadaCC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1) 572 315bab4eSMasahiro Yamada 573 2042b548SMasahiro Yamadaifdef config-build 574 1da177e4SLinus Torvalds# =========================================================================== 575 1da177e4SLinus Torvalds# *config targets only - make sure prerequisites are updated, and descend 576 1da177e4SLinus Torvalds# in scripts/kconfig to make the *config target 577 1da177e4SLinus Torvalds 578 1da177e4SLinus Torvalds# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 579 1da177e4SLinus Torvalds# KBUILD_DEFCONFIG may point out an alternative default configuration 580 1da177e4SLinus Torvalds# used for 'make defconfig' 581 a436bb7bSMasahiro Yamadainclude arch/$(SRCARCH)/Makefile 582 315bab4eSMasahiro Yamadaexport KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 583 1da177e4SLinus Torvalds 584 36de077bSMasahiro Yamadaconfig: outputmakefile scripts_basic FORCE 585 31110ebbSSam Ravnborg $(Q)$(MAKE) $(build)=scripts/kconfig $@ 586 31110ebbSSam Ravnborg 587 36de077bSMasahiro Yamada%config: outputmakefile scripts_basic FORCE 588 1da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/kconfig $@ 589 1da177e4SLinus Torvalds 590 2042b548SMasahiro Yamadaelse #!config-build 591 1da177e4SLinus Torvalds# =========================================================================== 592 1da177e4SLinus Torvalds# Build targets only - this includes vmlinux, arch specific targets, clean 593 1da177e4SLinus Torvalds# targets and others. In general all targets except *config targets. 594 1da177e4SLinus Torvalds 595 2c1f4f12SMasahiro Yamada# If building an external module we do not care about the all: rule 596 2c1f4f12SMasahiro Yamada# but instead _all depend on modules 597 2c1f4f12SMasahiro YamadaPHONY += all 598 2c1f4f12SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 599 2c1f4f12SMasahiro Yamada_all: all 600 2c1f4f12SMasahiro Yamadaelse 601 2c1f4f12SMasahiro Yamada_all: modules 602 2c1f4f12SMasahiro Yamadaendif 603 2c1f4f12SMasahiro Yamada 604 2c1f4f12SMasahiro Yamada# Decide whether to build built-in, modular, or both. 605 2c1f4f12SMasahiro Yamada# Normally, just do built-in. 606 2c1f4f12SMasahiro Yamada 607 2c1f4f12SMasahiro YamadaKBUILD_MODULES := 608 2c1f4f12SMasahiro YamadaKBUILD_BUILTIN := 1 609 2c1f4f12SMasahiro Yamada 610 2c1f4f12SMasahiro Yamada# If we have only "make modules", don't compile built-in objects. 611 2c1f4f12SMasahiro Yamada# When we're building modules with modversions, we need to consider 612 2c1f4f12SMasahiro Yamada# the built-in objects during the descend as well, in order to 613 2c1f4f12SMasahiro Yamada# make sure the checksums are up to date before we record them. 614 2c1f4f12SMasahiro Yamada 615 2c1f4f12SMasahiro Yamadaifeq ($(MAKECMDGOALS),modules) 616 2c1f4f12SMasahiro Yamada KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 617 2c1f4f12SMasahiro Yamadaendif 618 2c1f4f12SMasahiro Yamada 619 2c1f4f12SMasahiro Yamada# If we have "make <whatever> modules", compile modules 620 2c1f4f12SMasahiro Yamada# in addition to whatever we do anyway. 621 2c1f4f12SMasahiro Yamada# Just "make" or "make all" shall build modules as well 622 2c1f4f12SMasahiro Yamada 623 d85103acSMasahiro Yamadaifneq ($(filter all _all modules nsdeps,$(MAKECMDGOALS)),) 624 2c1f4f12SMasahiro Yamada KBUILD_MODULES := 1 625 2c1f4f12SMasahiro Yamadaendif 626 2c1f4f12SMasahiro Yamada 627 2c1f4f12SMasahiro Yamadaifeq ($(MAKECMDGOALS),) 628 2c1f4f12SMasahiro Yamada KBUILD_MODULES := 1 629 2c1f4f12SMasahiro Yamadaendif 630 2c1f4f12SMasahiro Yamada 631 2c1f4f12SMasahiro Yamadaexport KBUILD_MODULES KBUILD_BUILTIN 632 2c1f4f12SMasahiro Yamada 633 2042b548SMasahiro Yamadaifdef need-config 634 d93a18f2SMasahiro Yamadainclude include/config/auto.conf 635 d93a18f2SMasahiro Yamadaendif 636 d93a18f2SMasahiro Yamada 637 1da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 638 1da177e4SLinus Torvalds# Objects we will link into vmlinux / subdirs we need to visit 639 1da177e4SLinus Torvaldsinit-y := init/ 640 f96182e9SMasahiro Yamadadrivers-y := drivers/ sound/ 641 d93a18f2SMasahiro Yamadadrivers-$(CONFIG_SAMPLES) += samples/ 642 1da177e4SLinus Torvaldsnet-y := net/ 643 1da177e4SLinus Torvaldslibs-y := lib/ 644 1da177e4SLinus Torvaldscore-y := usr/ 645 37d9fe47SFeng Wuvirt-y := virt/ 646 1da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 647 1da177e4SLinus Torvalds 648 315bab4eSMasahiro Yamada# The all: target is the default when no target is given on the 649 315bab4eSMasahiro Yamada# command line. 650 315bab4eSMasahiro Yamada# This allow a user to issue only 'make' to build a kernel including modules 651 315bab4eSMasahiro Yamada# Defaults to vmlinux, but the arch makefile usually adds further targets 652 315bab4eSMasahiro Yamadaall: vmlinux 653 315bab4eSMasahiro Yamada 654 315bab4eSMasahiro YamadaCFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ 655 315bab4eSMasahiro Yamada $(call cc-option,-fno-tree-loop-im) \ 656 315bab4eSMasahiro Yamada $(call cc-disable-warning,maybe-uninitialized,) 657 5aadfdebSMasahiro Yamadaexport CFLAGS_GCOV 658 315bab4eSMasahiro Yamada 659 b1f4ff74SPaulo Zanoni# The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. 660 b1f4ff74SPaulo Zanoniifdef CONFIG_FUNCTION_TRACER 661 b1f4ff74SPaulo Zanoni CC_FLAGS_FTRACE := -pg 662 b1f4ff74SPaulo Zanoniendif 663 b1f4ff74SPaulo Zanoni 664 669e06b1SMasahiro YamadaRETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register 665 669e06b1SMasahiro YamadaRETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register 666 669e06b1SMasahiro YamadaRETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk 667 669e06b1SMasahiro YamadaRETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline 668 669e06b1SMasahiro YamadaRETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG))) 669 669e06b1SMasahiro YamadaRETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG))) 670 669e06b1SMasahiro Yamadaexport RETPOLINE_CFLAGS 671 669e06b1SMasahiro Yamadaexport RETPOLINE_VDSO_CFLAGS 672 669e06b1SMasahiro Yamada 673 315bab4eSMasahiro Yamadainclude arch/$(SRCARCH)/Makefile 674 315bab4eSMasahiro Yamada 675 2042b548SMasahiro Yamadaifdef need-config 676 2042b548SMasahiro Yamadaifdef may-sync-config 677 315bab4eSMasahiro Yamada# Read in dependencies to all Kconfig* files, make sure to run syncconfig if 678 315bab4eSMasahiro Yamada# changes are detected. This should be included after arch/$(SRCARCH)/Makefile 679 315bab4eSMasahiro Yamada# because some architectures define CROSS_COMPILE there. 680 d2f8ae0eSMasahiro Yamadainclude include/config/auto.conf.cmd 681 1da177e4SLinus Torvalds 682 05850719SMasahiro Yamada$(KCONFIG_CONFIG): 683 05850719SMasahiro Yamada @echo >&2 '***' 684 05850719SMasahiro Yamada @echo >&2 '*** Configuration file "$@" not found!' 685 05850719SMasahiro Yamada @echo >&2 '***' 686 05850719SMasahiro Yamada @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or' 687 05850719SMasahiro Yamada @echo >&2 '*** "make menuconfig" or "make xconfig").' 688 05850719SMasahiro Yamada @echo >&2 '***' 689 05850719SMasahiro Yamada @/bin/false 690 1da177e4SLinus Torvalds 691 61277981SUlf Magnusson# The actual configuration files used during the build are stored in 692 61277981SUlf Magnusson# include/generated/ and include/config/. Update them if .config is newer than 693 61277981SUlf Magnusson# include/config/auto.conf (which mirrors .config). 694 9390dff6SMasahiro Yamada# 695 9390dff6SMasahiro Yamada# This exploits the 'multi-target pattern rule' trick. 696 9390dff6SMasahiro Yamada# The syncconfig should be executed only once to make all the targets. 697 f463c351SMasahiro Yamada# (Note: use the grouped target '&:' when we bump to GNU Make 4.3) 698 8b41fc44SMasahiro Yamada%/auto.conf %/auto.conf.cmd: $(KCONFIG_CONFIG) 699 911a91c3SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 700 2042b548SMasahiro Yamadaelse # !may-sync-config 701 d7942413SMasahiro Yamada# External modules and some install targets need include/generated/autoconf.h 702 d7942413SMasahiro Yamada# and include/config/auto.conf but do not care if they are up-to-date. 703 d7942413SMasahiro Yamada# Use auto.conf to trigger the test 704 9ee4e336SSam RavnborgPHONY += include/config/auto.conf 705 9ee4e336SSam Ravnborg 706 9ee4e336SSam Ravnborginclude/config/auto.conf: 707 264a2683SSam Ravnborg $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 708 5369f550SMichal Marek echo >&2; \ 709 5369f550SMichal Marek echo >&2 " ERROR: Kernel configuration is invalid."; \ 710 5369f550SMichal Marek echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 711 5369f550SMichal Marek echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 712 5369f550SMichal Marek echo >&2 ; \ 713 9ee4e336SSam Ravnborg /bin/false) 714 9ee4e336SSam Ravnborg 715 d7942413SMasahiro Yamadaendif # may-sync-config 716 2042b548SMasahiro Yamadaendif # need-config 717 1da177e4SLinus Torvalds 718 a1c48bb1SGeert UytterhoevenKBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) 719 ef6000b4SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) 720 bd664f6bSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) 721 bd664f6bSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) 722 6f303d60SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 723 a1c48bb1SGeert Uytterhoeven 724 15f5db60SMasahiro Yamadaifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 725 a0f97e06SSam RavnborgKBUILD_CFLAGS += -O2 726 15f5db60SMasahiro Yamadaelse ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 727 15f5db60SMasahiro YamadaKBUILD_CFLAGS += -O3 728 15f5db60SMasahiro Yamadaelse ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 729 15f5db60SMasahiro YamadaKBUILD_CFLAGS += -Os 730 1da177e4SLinus Torvaldsendif 731 1da177e4SLinus Torvalds 732 b303c6dfSMasahiro Yamadaifdef CONFIG_CC_DISABLE_WARN_MAYBE_UNINITIALIZED 733 b303c6dfSMasahiro YamadaKBUILD_CFLAGS += -Wno-maybe-uninitialized 734 b303c6dfSMasahiro Yamadaendif 735 a76bcf55SArnd Bergmann 736 69102311SJiri Kosina# Tell gcc to never replace conditional load with a non-conditional one 737 69102311SJiri KosinaKBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 738 b1112139SSergei TrofimovichKBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) 739 69102311SJiri Kosina 740 d677a4d6SVictor Chibotaruinclude scripts/Makefile.kcov 741 6b90bd4bSEmese Revfyinclude scripts/Makefile.gcc-plugins 742 6b90bd4bSEmese Revfy 743 1873e870SAndi Kleenifdef CONFIG_READABLE_ASM 744 1873e870SAndi Kleen# Disable optimizations that make assembler listings hard to read. 745 1873e870SAndi Kleen# reorder blocks reorders the control in the function 746 1873e870SAndi Kleen# ipa clone creates specialized cloned functions 747 1873e870SAndi Kleen# partial inlining inlines only parts of functions 748 1873e870SAndi KleenKBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ 749 1873e870SAndi Kleen $(call cc-option,-fno-ipa-cp-clone,) \ 750 1873e870SAndi Kleen $(call cc-option,-fno-partial-inlining) 751 1873e870SAndi Kleenendif 752 1873e870SAndi Kleen 753 08f67461SMike Frysingerifneq ($(CONFIG_FRAME_WARN),0) 754 a83e4ca2SMasahiro YamadaKBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN) 755 35bb5b1eSAndi Kleenendif 756 35bb5b1eSAndi Kleen 757 2a61f474SMasahiro Yamadastackp-flags-$(CONFIG_CC_HAS_STACKPROTECTOR_NONE) := -fno-stack-protector 758 050e9baaSLinus Torvaldsstackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector 759 050e9baaSLinus Torvaldsstackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong 760 2a61f474SMasahiro Yamada 761 2a61f474SMasahiro YamadaKBUILD_CFLAGS += $(stackp-flags-y) 762 e06b8b98SSam Ravnborg 763 076f421dSMasahiro Yamadaifdef CONFIG_CC_IS_CLANG 764 a1494304SMasahiro YamadaKBUILD_CPPFLAGS += -Qunused-arguments 765 a1494304SMasahiro YamadaKBUILD_CFLAGS += -Wno-format-invalid-specifier 766 a1494304SMasahiro YamadaKBUILD_CFLAGS += -Wno-gnu 767 cfe17c9bSMasahiro Yamada# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the 768 cfe17c9bSMasahiro Yamada# source of a reference will be _MergedGlobals and not on of the whitelisted names. 769 cfe17c9bSMasahiro Yamada# See modpost pattern 2 770 a1494304SMasahiro YamadaKBUILD_CFLAGS += -mno-global-merge 771 cfe17c9bSMasahiro Yamadaelse 772 cfe17c9bSMasahiro Yamada 773 cfe17c9bSMasahiro Yamada# These warnings generated too much noise in a regular build. 774 cfe17c9bSMasahiro Yamada# Use make W=1 to enable them (see scripts/Makefile.extrawarn) 775 9df3e7a7SMasahiro YamadaKBUILD_CFLAGS += -Wno-unused-but-set-variable 776 e2079e93SNathan Chancellor 777 e2079e93SNathan Chancellor# Warn about unmarked fall-throughs in switch statement. 778 e2079e93SNathan Chancellor# Disabled for clang while comment to attribute conversion happens and 779 e2079e93SNathan Chancellor# https://github.com/ClangBuiltLinux/linux/issues/636 is discussed. 780 e2079e93SNathan ChancellorKBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,) 781 cfe17c9bSMasahiro Yamadaendif 782 cfe17c9bSMasahiro Yamada 783 0a5f4176SSodagudi PrasadKBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) 784 1da177e4SLinus Torvaldsifdef CONFIG_FRAME_POINTER 785 a0f97e06SSam RavnborgKBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 786 1da177e4SLinus Torvaldselse 787 7e9501fdSRabin Vincent# Some targets (ARM with Thumb2, for example), can't be built with frame 788 7e9501fdSRabin Vincent# pointers. For those, we don't have FUNCTION_TRACER automatically 789 7e9501fdSRabin Vincent# select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 790 7e9501fdSRabin Vincent# incompatible with -fomit-frame-pointer with current GCC, so we don't use 791 7e9501fdSRabin Vincent# -fomit-frame-pointer with FUNCTION_TRACER. 792 7e9501fdSRabin Vincentifndef CONFIG_FUNCTION_TRACER 793 a0f97e06SSam RavnborgKBUILD_CFLAGS += -fomit-frame-pointer 794 1da177e4SLinus Torvaldsendif 795 7e9501fdSRabin Vincentendif 796 1da177e4SLinus Torvalds 797 709a972eSKees Cook# Initialize all stack variables with a pattern, if desired. 798 709a972eSKees Cookifdef CONFIG_INIT_STACK_ALL 799 709a972eSKees CookKBUILD_CFLAGS += -ftrivial-auto-var-init=pattern 800 709a972eSKees Cookendif 801 709a972eSKees Cook 802 1e88e415SMasahiro YamadaDEBUG_CFLAGS := $(call cc-option, -fno-var-tracking-assignments) 803 2062afb4SLinus Torvalds 804 1da177e4SLinus Torvaldsifdef CONFIG_DEBUG_INFO 805 866ced95SAndi Kleenifdef CONFIG_DEBUG_INFO_SPLIT 806 9d937444SMasahiro YamadaDEBUG_CFLAGS += -gsplit-dwarf 807 866ced95SAndi Kleenelse 808 1e88e415SMasahiro YamadaDEBUG_CFLAGS += -g 809 866ced95SAndi Kleenendif 810 2288328cSBehan WebsterKBUILD_AFLAGS += -Wa,-gdwarf-2 811 1da177e4SLinus Torvaldsendif 812 bfaf2dd3SAndi Kleenifdef CONFIG_DEBUG_INFO_DWARF4 813 9d937444SMasahiro YamadaDEBUG_CFLAGS += -gdwarf-4 814 bfaf2dd3SAndi Kleenendif 815 1da177e4SLinus Torvalds 816 d6f4ceb7SAndi Kleenifdef CONFIG_DEBUG_INFO_REDUCED 817 1e88e415SMasahiro YamadaDEBUG_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 818 e82c4bb8SAndi Kleen $(call cc-option,-fno-var-tracking) 819 d6f4ceb7SAndi Kleenendif 820 d6f4ceb7SAndi Kleen 821 1e88e415SMasahiro YamadaKBUILD_CFLAGS += $(DEBUG_CFLAGS) 822 1e88e415SMasahiro Yamadaexport DEBUG_CFLAGS 823 1e88e415SMasahiro Yamada 824 606576ceSSteven Rostedtifdef CONFIG_FUNCTION_TRACER 825 07d04081SVasily Gorbikifdef CONFIG_FTRACE_MCOUNT_RECORD 826 07d04081SVasily Gorbik # gcc 5 supports generating the mcount tables directly 827 07d04081SVasily Gorbik ifeq ($(call cc-option-yn,-mrecord-mcount),y) 828 07d04081SVasily Gorbik CC_FLAGS_FTRACE += -mrecord-mcount 829 07d04081SVasily Gorbik export CC_USING_RECORD_MCOUNT := 1 830 a2546faeSSteven Rostedt endif 831 2f4df001SVasily Gorbik ifdef CONFIG_HAVE_NOP_MCOUNT 832 2f4df001SVasily Gorbik ifeq ($(call cc-option-yn, -mnop-mcount),y) 833 2f4df001SVasily Gorbik CC_FLAGS_FTRACE += -mnop-mcount 834 2f4df001SVasily Gorbik CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 835 2f4df001SVasily Gorbik endif 836 2f4df001SVasily Gorbik endif 837 07d04081SVasily Gorbikendif 838 a2546faeSSteven Rostedtifdef CONFIG_HAVE_FENTRY 839 f28bc3c3SVasily Gorbik ifeq ($(call cc-option-yn, -mfentry),y) 840 f28bc3c3SVasily Gorbik CC_FLAGS_FTRACE += -mfentry 841 f28bc3c3SVasily Gorbik CC_FLAGS_USING += -DCC_USING_FENTRY 842 a2546faeSSteven Rostedt endif 843 f28bc3c3SVasily Gorbikendif 844 f28bc3c3SVasily Gorbikexport CC_FLAGS_FTRACE 845 f28bc3c3SVasily GorbikKBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 846 f28bc3c3SVasily GorbikKBUILD_AFLAGS += $(CC_FLAGS_USING) 847 72441cb1SSteven Rostedtifdef CONFIG_DYNAMIC_FTRACE 848 cf4db259SSteven Rostedt ifdef CONFIG_HAVE_C_RECORDMCOUNT 849 72441cb1SSteven Rostedt BUILD_C_RECORDMCOUNT := y 850 72441cb1SSteven Rostedt export BUILD_C_RECORDMCOUNT 851 72441cb1SSteven Rostedt endif 852 72441cb1SSteven Rostedtendif 853 16444a8aSArnaldo Carvalho de Meloendif 854 16444a8aSArnaldo Carvalho de Melo 855 91341d4bSSam Ravnborg# We trigger additional mismatches with less inlining 856 91341d4bSSam Ravnborgifdef CONFIG_DEBUG_SECTION_MISMATCH 857 91341d4bSSam RavnborgKBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 858 91341d4bSSam Ravnborgendif 859 91341d4bSSam Ravnborg 860 90ad4052SMasahiro Yamadaifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 861 e85d1d65SMasahiro YamadaKBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 862 e85d1d65SMasahiro YamadaLDFLAGS_vmlinux += --gc-sections 863 90ad4052SMasahiro Yamadaendif 864 90ad4052SMasahiro Yamada 865 43bd3a95SMiroslav Benesifdef CONFIG_LIVEPATCH 866 43bd3a95SMiroslav BenesKBUILD_CFLAGS += $(call cc-option, -flive-patching=inline-clone) 867 43bd3a95SMiroslav Benesendif 868 43bd3a95SMiroslav Benes 869 e8e69931SSam Ravnborg# arch Makefile may override CC so keep this after arch Makefile is included 870 e08d6de4SMasahiro YamadaNOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 871 e8e69931SSam Ravnborg 872 1da177e4SLinus Torvalds# warn about C99 declaration after statement 873 a33e7ae2SMasahiro YamadaKBUILD_CFLAGS += -Wdeclaration-after-statement 874 1da177e4SLinus Torvalds 875 0bb95f80SKees Cook# Variable Length Arrays (VLAs) should not be used anywhere in the kernel 876 8289f913SMasahiro YamadaKBUILD_CFLAGS += -Wvla 877 0bb95f80SKees Cook 878 070b98bfSSam Ravnborg# disable pointer signed / unsigned warnings in gcc 4.0 879 fb073a4bSMasahiro YamadaKBUILD_CFLAGS += -Wno-pointer-sign 880 1da177e4SLinus Torvalds 881 217c3e01SStephen Rothwell# disable stringop warnings in gcc 8+ 882 217c3e01SStephen RothwellKBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 883 217c3e01SStephen Rothwell 884 fe8d0a41SKirill Smelkov# disable invalid "can't wrap" optimizations for signed / pointers 885 a137802eSLinus TorvaldsKBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 886 d0115552SLinus Torvalds 887 87e0d4f0SDaniel Borkmann# clang sets -fmerge-all-constants by default as optimization, but this 888 87e0d4f0SDaniel Borkmann# is non-conforming behavior for C and in fact breaks the kernel, so we 889 87e0d4f0SDaniel Borkmann# need to disable it here generally. 890 87e0d4f0SDaniel BorkmannKBUILD_CFLAGS += $(call cc-option,-fno-merge-all-constants) 891 87e0d4f0SDaniel Borkmann 892 87e0d4f0SDaniel Borkmann# for gcc -fno-merge-all-constants disables everything, but it is fine 893 87e0d4f0SDaniel Borkmann# to have actual conforming behavior enabled. 894 87e0d4f0SDaniel BorkmannKBUILD_CFLAGS += $(call cc-option,-fmerge-constants) 895 87e0d4f0SDaniel Borkmann 896 3ce120b1SLinus Torvalds# Make sure -fstack-check isn't enabled (like gentoo apparently did) 897 3ce120b1SLinus TorvaldsKBUILD_CFLAGS += $(call cc-option,-fno-stack-check,) 898 3ce120b1SLinus Torvalds 899 8f7f5c9fSAndi Kleen# conserve stack if available 900 8f7f5c9fSAndi KleenKBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 901 8f7f5c9fSAndi Kleen 902 fe7c36c7SJosh Triplett# Prohibit date/time macros, which would make the build non-deterministic 903 fe7c36c7SJosh TriplettKBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 904 fe7c36c7SJosh Triplett 905 ea8daa7bSDaniel Wagner# enforce correct pointer usage 906 ea8daa7bSDaniel WagnerKBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) 907 ea8daa7bSDaniel Wagner 908 c834f0e8SKees Cook# Require designated initializers for all marked structures 909 c834f0e8SKees CookKBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 910 c834f0e8SKees Cook 911 a73619a8SMasahiro Yamada# change __FILE__ to the relative path from the srctree 912 a73619a8SMasahiro YamadaKBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 913 a73619a8SMasahiro Yamada 914 29be86d7SSeth Forshee# ensure -fcf-protection is disabled when using retpoline as it is 915 29be86d7SSeth Forshee# incompatible with -mindirect-branch=thunk-extern 916 29be86d7SSeth Forsheeifdef CONFIG_RETPOLINE 917 29be86d7SSeth ForsheeKBUILD_CFLAGS += $(call cc-option,-fcf-protection=none) 918 29be86d7SSeth Forsheeendif 919 29be86d7SSeth Forshee 920 a436bb7bSMasahiro Yamadainclude scripts/Makefile.kasan 921 a436bb7bSMasahiro Yamadainclude scripts/Makefile.extrawarn 922 c6d30853SAndrey Ryabinininclude scripts/Makefile.ubsan 923 a86fe353SMasahiro Yamada 924 8cc7af75SMasahiro Yamada# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 925 8cc7af75SMasahiro YamadaKBUILD_CPPFLAGS += $(KCPPFLAGS) 926 8cc7af75SMasahiro YamadaKBUILD_AFLAGS += $(KAFLAGS) 927 8cc7af75SMasahiro YamadaKBUILD_CFLAGS += $(KCFLAGS) 928 52bcc330SSam Ravnborg 929 89ff7131SMasahiro YamadaKBUILD_LDFLAGS_MODULE += --build-id 930 89ff7131SMasahiro YamadaLDFLAGS_vmlinux += --build-id 931 18991197SRoland McGrath 932 5d7d18f5SDavid Howellsifeq ($(CONFIG_STRIP_ASM_SYMS),y) 933 d79a2719SAndi KleenLDFLAGS_vmlinux += $(call ld-option, -X,) 934 5d7d18f5SDavid Howellsendif 935 5d7d18f5SDavid Howells 936 5cf896fbSPeter Collingbourneifeq ($(CONFIG_RELR),y) 937 5cf896fbSPeter CollingbourneLDFLAGS_vmlinux += --pack-dyn-relocs=relr 938 5cf896fbSPeter Collingbourneendif 939 5cf896fbSPeter Collingbourne 940 80591e61SLuc Van Oostenryck# make the checker run with the right architecture 941 80591e61SLuc Van OostenryckCHECKFLAGS += --arch=$(ARCH) 942 80591e61SLuc Van Oostenryck 943 14516765SLuc Van Oostenryck# insure the checker run with the right endianness 944 14516765SLuc Van OostenryckCHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 945 14516765SLuc Van Oostenryck 946 1f2f01b1SLuc Van Oostenryck# the checker needs the correct machine size 947 1f2f01b1SLuc Van OostenryckCHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 948 1f2f01b1SLuc Van Oostenryck 949 1da177e4SLinus Torvalds# Default kernel image to build when no specific target is given. 950 1da177e4SLinus Torvalds# KBUILD_IMAGE may be overruled on the command line or 951 1da177e4SLinus Torvalds# set in the environment 952 1da177e4SLinus Torvalds# Also any assignments in arch/$(ARCH)/Makefile take precedence over 953 1da177e4SLinus Torvalds# this default value 954 1da177e4SLinus Torvaldsexport KBUILD_IMAGE ?= vmlinux 955 1da177e4SLinus Torvalds 956 1da177e4SLinus Torvalds# 957 1da177e4SLinus Torvalds# INSTALL_PATH specifies where to place the updated kernel and system map 958 1da177e4SLinus Torvalds# images. Default is /boot, but you can set it to other values 959 1da177e4SLinus Torvaldsexport INSTALL_PATH ?= /boot 960 1da177e4SLinus Torvalds 961 1da177e4SLinus Torvalds# 962 f4d4ffc0SJason Cooper# INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 963 f4d4ffc0SJason Cooper# Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 964 f4d4ffc0SJason Cooper# an argument if needed. Otherwise it defaults to the kernel install path 965 f4d4ffc0SJason Cooper# 966 f4d4ffc0SJason Cooperexport INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 967 f4d4ffc0SJason Cooper 968 f4d4ffc0SJason Cooper# 969 1da177e4SLinus Torvalds# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 970 1da177e4SLinus Torvalds# relocations required by build roots. This is not defined in the 971 070b98bfSSam Ravnborg# makefile but the argument can be passed to make if needed. 972 1da177e4SLinus Torvalds# 973 1da177e4SLinus Torvalds 974 df9df036SSam RavnborgMODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 975 1da177e4SLinus Torvaldsexport MODLIB 976 1da177e4SLinus Torvalds 977 ac031f26STheodore Ts'o# 978 2ea03891SSam Ravnborg# INSTALL_MOD_STRIP, if defined, will cause modules to be 979 2ea03891SSam Ravnborg# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 980 2ea03891SSam Ravnborg# the default option --strip-debug will be used. Otherwise, 981 177b241dSGilles Espinasse# INSTALL_MOD_STRIP value will be used as the options to the strip command. 982 2ea03891SSam Ravnborg 983 ac031f26STheodore Ts'oifdef INSTALL_MOD_STRIP 984 ac031f26STheodore Ts'oifeq ($(INSTALL_MOD_STRIP),1) 985 2ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) --strip-debug 986 ac031f26STheodore Ts'oelse 987 2ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 988 ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP=1 989 ac031f26STheodore Ts'oelse 990 2ea03891SSam Ravnborgmod_strip_cmd = true 991 ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP 992 ac031f26STheodore Ts'oexport mod_strip_cmd 993 ac031f26STheodore Ts'o 994 beb50df3SBertrand Jacquin# CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed 995 beb50df3SBertrand Jacquin# after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP 996 beb50df3SBertrand Jacquin# or CONFIG_MODULE_COMPRESS_XZ. 997 beb50df3SBertrand Jacquin 998 beb50df3SBertrand Jacquinmod_compress_cmd = true 999 beb50df3SBertrand Jacquinifdef CONFIG_MODULE_COMPRESS 1000 beb50df3SBertrand Jacquin ifdef CONFIG_MODULE_COMPRESS_GZIP 1001 3d1450d5SJason A. Donenfeld mod_compress_cmd = gzip -n -f 1002 beb50df3SBertrand Jacquin endif # CONFIG_MODULE_COMPRESS_GZIP 1003 beb50df3SBertrand Jacquin ifdef CONFIG_MODULE_COMPRESS_XZ 1004 3d1450d5SJason A. Donenfeld mod_compress_cmd = xz -f 1005 beb50df3SBertrand Jacquin endif # CONFIG_MODULE_COMPRESS_XZ 1006 beb50df3SBertrand Jacquinendif # CONFIG_MODULE_COMPRESS 1007 beb50df3SBertrand Jacquinexport mod_compress_cmd 1008 beb50df3SBertrand Jacquin 1009 d9d8d7edSMichal Marekifdef CONFIG_MODULE_SIG_ALL 1010 3ee550f1SDavid Woodhouse$(eval $(call config_filename,MODULE_SIG_KEY)) 1011 3ee550f1SDavid Woodhouse 1012 3ee550f1SDavid Woodhousemod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 1013 e2a666d5SRusty Russellelse 1014 e2a666d5SRusty Russellmod_sign_cmd = true 1015 e2a666d5SRusty Russellendif 1016 e2a666d5SRusty Russellexport mod_sign_cmd 1017 e2a666d5SRusty Russell 1018 056d28d1SRolf Eike BeerHOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf) 1019 056d28d1SRolf Eike Beer 1020 9f0c18aeSJosh Poimboeufifdef CONFIG_STACK_VALIDATION 1021 9f0c18aeSJosh Poimboeuf has_libelf := $(call try-run,\ 1022 056d28d1SRolf Eike Beer echo "int main() {}" | $(HOSTCC) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0) 1023 9f0c18aeSJosh Poimboeuf ifeq ($(has_libelf),1) 1024 9f0c18aeSJosh Poimboeuf objtool_target := tools/objtool FORCE 1025 9f0c18aeSJosh Poimboeuf else 1026 9f0c18aeSJosh Poimboeuf SKIP_STACK_VALIDATION := 1 1027 9f0c18aeSJosh Poimboeuf export SKIP_STACK_VALIDATION 1028 9f0c18aeSJosh Poimboeuf endif 1029 9f0c18aeSJosh Poimboeufendif 1030 9f0c18aeSJosh Poimboeuf 1031 e00d8880SMasahiro YamadaPHONY += prepare0 1032 e2a666d5SRusty Russell 1033 394053f4SMasahiro Yamadaexport MODORDER := $(extmod-prefix)modules.order 1034 bc35d4bdSMasahiro Yamadaexport MODULES_NSDEPS := $(extmod-prefix)modules.nsdeps 1035 47801c97SMasahiro Yamada 1036 1da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 1037 cfc411e7SDavid Howellscore-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ 1038 1da177e4SLinus Torvalds 1039 1da177e4SLinus Torvaldsvmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 1040 1da177e4SLinus Torvalds $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 1041 37d9fe47SFeng Wu $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) 1042 1da177e4SLinus Torvalds 1043 1eaca4b9SMasahiro Yamadavmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \ 1044 1eaca4b9SMasahiro Yamada $(patsubst %/,%,$(filter %/, $(init-) $(core-) \ 1045 1eaca4b9SMasahiro Yamada $(drivers-) $(net-) $(libs-) $(virt-)))) 1046 1da177e4SLinus Torvalds 1047 c99f3918SMasahiro Yamadabuild-dirs := $(vmlinux-dirs) 1048 76cd306dSMasahiro Yamadaclean-dirs := $(vmlinux-alldirs) 1049 c99f3918SMasahiro Yamada 1050 f49821eeSNicholas Piggininit-y := $(patsubst %/, %/built-in.a, $(init-y)) 1051 f49821eeSNicholas Piggincore-y := $(patsubst %/, %/built-in.a, $(core-y)) 1052 f49821eeSNicholas Piggindrivers-y := $(patsubst %/, %/built-in.a, $(drivers-y)) 1053 f49821eeSNicholas Pigginnet-y := $(patsubst %/, %/built-in.a, $(net-y)) 1054 7273ad2bSMasahiro Yamadalibs-y2 := $(patsubst %/, %/built-in.a, $(filter %/, $(libs-y))) 1055 7273ad2bSMasahiro Yamadaifdef CONFIG_MODULES 1056 7273ad2bSMasahiro Yamadalibs-y1 := $(filter-out %/, $(libs-y)) 1057 7273ad2bSMasahiro Yamadalibs-y2 += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y))) 1058 7273ad2bSMasahiro Yamadaelse 1059 1da177e4SLinus Torvaldslibs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 1060 7273ad2bSMasahiro Yamadaendif 1061 f49821eeSNicholas Pigginvirt-y := $(patsubst %/, %/built-in.a, $(virt-y)) 1062 1da177e4SLinus Torvalds 1063 1f2bfbd0SSam Ravnborg# Externally visible symbols (used by link-vmlinux.sh) 1064 d151e971SMasahiro Yamadaexport KBUILD_VMLINUX_OBJS := $(head-y) $(init-y) $(core-y) $(libs-y2) \ 1065 d151e971SMasahiro Yamada $(drivers-y) $(net-y) $(virt-y) 1066 3a166fc2SNicholas Pigginexport KBUILD_VMLINUX_LIBS := $(libs-y1) 1067 95698570SSam Ravnborgexport KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 1068 1f2bfbd0SSam Ravnborgexport LDFLAGS_vmlinux 1069 85f0ae7eSMasahiro Yamada# used by scripts/Makefile.package 1070 233c741dSMasahiro Yamadaexport KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools) 1071 1da177e4SLinus Torvalds 1072 d151e971SMasahiro Yamadavmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) 1073 1da177e4SLinus Torvalds 1074 3fdc7d3fSMasahiro Yamada# Recurse until adjust_autoksyms.sh is satisfied 1075 3fdc7d3fSMasahiro YamadaPHONY += autoksyms_recursive 1076 2441e78bSNicolas Pitreifdef CONFIG_TRIM_UNUSED_KSYMS 1077 c99f3918SMasahiro Yamadaautoksyms_recursive: descend modules.order 1078 ba79d401SNicolas Ferre $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ 1079 86556392SNicolas Pitre "$(MAKE) -f $(srctree)/Makefile vmlinux" 1080 2441e78bSNicolas Pitreendif 1081 23121ca2SNicolas Pitre 1082 1f50b80aSMasahiro Yamada# For the kernel to actually contain only the needed exported symbols, 1083 1f50b80aSMasahiro Yamada# we have to build modules as well to determine what those symbols are. 1084 1f50b80aSMasahiro Yamada# (this can be evaluated only once include/config/auto.conf has been included) 1085 1f50b80aSMasahiro Yamadaifdef CONFIG_TRIM_UNUSED_KSYMS 1086 1f50b80aSMasahiro Yamada KBUILD_MODULES := 1 1087 1f50b80aSMasahiro Yamadaendif 1088 1f50b80aSMasahiro Yamada 1089 07a422bbSMasahiro Yamadaautoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) 1090 07a422bbSMasahiro Yamada 1091 88694cffSQuentin Perretquiet_cmd_autoksyms_h = GEN $@ 1092 88694cffSQuentin Perret cmd_autoksyms_h = mkdir -p $(dir $@); \ 1093 88694cffSQuentin Perret $(CONFIG_SHELL) $(srctree)/scripts/gen_autoksyms.sh $@ 1094 88694cffSQuentin Perret 1095 07a422bbSMasahiro Yamada$(autoksyms_h): 1096 88694cffSQuentin Perret $(call cmd,autoksyms_h) 1097 23121ca2SNicolas Pitre 1098 fbe6e37dSNicholas PigginARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) 1099 fbe6e37dSNicholas Piggin 1100 fbe6e37dSNicholas Piggin# Final link of vmlinux with optional arch pass after final link 1101 fbe6e37dSNicholas Piggincmd_link-vmlinux = \ 1102 d503ac53SMasahiro Yamada $(CONFIG_SHELL) $< $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_vmlinux) ; \ 1103 fbe6e37dSNicholas Piggin $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 1104 2441e78bSNicolas Pitre 1105 3fdc7d3fSMasahiro Yamadavmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE 1106 1f2bfbd0SSam Ravnborg +$(call if_changed,link-vmlinux) 1107 741f98feSSam Ravnborg 1108 392885eeSMasahiro Yamadatargets := vmlinux 1109 392885eeSMasahiro Yamada 1110 1da177e4SLinus Torvalds# The actual objects are generated when descending, 1111 1da177e4SLinus Torvalds# make sure no implicit rule kicks in 1112 c99f3918SMasahiro Yamada$(sort $(vmlinux-deps)): descend ; 1113 1da177e4SLinus Torvalds 1114 ba97df45SMasahiro Yamadafilechk_kernel.release = \ 1115 0d0e7718SMichal Marek echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1116 0d0e7718SMichal Marek 1117 83a35e36SGeert Uytterhoeven# Store (new) KERNELRELEASE string in include/config/kernel.release 1118 24512795SMasahiro Yamadainclude/config/kernel.release: FORCE 1119 0d0e7718SMichal Marek $(call filechk,kernel.release) 1120 cb58455cSSam Ravnborg 1121 d8821622SMasahiro Yamada# Additional helpers built in scripts/ 1122 d8821622SMasahiro Yamada# Carefully list dependencies so we do not try to build scripts twice 1123 d8821622SMasahiro Yamada# in parallel 1124 d8821622SMasahiro YamadaPHONY += scripts 1125 60df1aeeSMasahiro Yamadascripts: scripts_basic scripts_dtc 1126 d8821622SMasahiro Yamada $(Q)$(MAKE) $(build)=$(@) 1127 cb58455cSSam Ravnborg 1128 1da177e4SLinus Torvalds# Things we need to do before we recursively start building the kernel 1129 5bb78269SSam Ravnborg# or the modules are listed in "prepare". 1130 5bb78269SSam Ravnborg# A multi level approach is used. prepareN is processed before prepareN-1. 1131 5bb78269SSam Ravnborg# archprepare is used in arch Makefiles and when processed asm symlink, 1132 5bb78269SSam Ravnborg# version.h and scripts_basic is processed / created. 1133 1da177e4SLinus Torvalds 1134 a5139fb3SMasahiro YamadaPHONY += prepare archprepare 1135 5bb78269SSam Ravnborg 1136 36de077bSMasahiro Yamadaarchprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \ 1137 30527cefSMasahiro Yamada asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h 1138 5bb78269SSam Ravnborg 1139 65bba042SMasahiro Yamadaprepare0: archprepare 1140 60df1aeeSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts/mod 1141 8d36a623SSam Ravnborg $(Q)$(MAKE) $(build)=. 1142 86feeaa8SSam Ravnborg 1143 1da177e4SLinus Torvalds# All the preparing.. 1144 b9ab5ebbSJosh Poimboeufprepare: prepare0 prepare-objtool 1145 b9ab5ebbSJosh Poimboeuf 1146 2c1f4f12SMasahiro Yamada# Support for using generic headers in asm-generic 1147 7d0e5c20SMasahiro Yamadaasm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj 1148 7d0e5c20SMasahiro Yamada 1149 2c1f4f12SMasahiro YamadaPHONY += asm-generic uapi-asm-generic 1150 2c1f4f12SMasahiro Yamadaasm-generic: uapi-asm-generic 1151 037fc336SMasahiro Yamada $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \ 1152 037fc336SMasahiro Yamada generic=include/asm-generic 1153 2c1f4f12SMasahiro Yamadauapi-asm-generic: 1154 037fc336SMasahiro Yamada $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \ 1155 037fc336SMasahiro Yamada generic=include/uapi/asm-generic 1156 2c1f4f12SMasahiro Yamada 1157 b9ab5ebbSJosh PoimboeufPHONY += prepare-objtool 1158 3b27a0c8SJosh Poimboeufprepare-objtool: $(objtool_target) 1159 ef7cfd00SMasahiro Yamadaifeq ($(SKIP_STACK_VALIDATION),1) 1160 ef7cfd00SMasahiro Yamadaifdef CONFIG_UNWINDER_ORC 1161 ef7cfd00SMasahiro Yamada @echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 1162 ef7cfd00SMasahiro Yamada @false 1163 ef7cfd00SMasahiro Yamadaelse 1164 ef7cfd00SMasahiro Yamada @echo "warning: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 1165 ef7cfd00SMasahiro Yamadaendif 1166 ef7cfd00SMasahiro Yamadaendif 1167 1da177e4SLinus Torvalds 1168 1da177e4SLinus Torvalds# Generate some files 1169 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1170 1da177e4SLinus Torvalds 1171 1da177e4SLinus Torvalds# KERNELRELEASE can change from a few different places, meaning version.h 1172 1da177e4SLinus Torvalds# needs to be updated, so this check is forced on all builds 1173 1da177e4SLinus Torvalds 1174 1da177e4SLinus Torvaldsuts_len := 64 1175 63104eecSSam Ravnborgdefine filechk_utsrelease.h 1176 1da177e4SLinus Torvalds if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1177 1da177e4SLinus Torvalds echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1178 1da177e4SLinus Torvalds exit 1; \ 1179 1da177e4SLinus Torvalds fi; \ 1180 ad774086SMasahiro Yamada echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" 1181 1da177e4SLinus Torvaldsendef 1182 1da177e4SLinus Torvalds 1183 63104eecSSam Ravnborgdefine filechk_version.h 1184 ad774086SMasahiro Yamada echo \#define LINUX_VERSION_CODE $(shell \ 1185 78d3bb44SMichal Marek expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1186 ad774086SMasahiro Yamada echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))' 1187 63104eecSSam Ravnborgendef 1188 63104eecSSam Ravnborg 1189 43fee2b2SMasahiro Yamada$(version_h): FORCE 1190 1da177e4SLinus Torvalds $(call filechk,version.h) 1191 223c24a7SMichal Marek $(Q)rm -f $(old_version_h) 1192 1da177e4SLinus Torvalds 1193 273b281fSSam Ravnborginclude/generated/utsrelease.h: include/config/kernel.release FORCE 1194 63104eecSSam Ravnborg $(call filechk,utsrelease.h) 1195 63104eecSSam Ravnborg 1196 179efcb4SVegard NossumPHONY += headerdep 1197 179efcb4SVegard Nossumheaderdep: 1198 9663d989SPeter Foley $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1199 9663d989SPeter Foley $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1200 179efcb4SVegard Nossum 1201 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1202 8d730cfbSDavid Woodhouse# Kernel headers 1203 8d730cfbSDavid Woodhouse 1204 e6883b18SSam Ravnborg#Default location for installed headers 1205 e6883b18SSam Ravnborgexport INSTALL_HDR_PATH = $(objtree)/usr 1206 e6883b18SSam Ravnborg 1207 59b2bd05SMasahiro Yamadaquiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include 1208 59b2bd05SMasahiro Yamada cmd_headers_install = \ 1209 59b2bd05SMasahiro Yamada mkdir -p $(INSTALL_HDR_PATH); \ 1210 59b2bd05SMasahiro Yamada rsync -mrl --include='*/' --include='*\.h' --exclude='*' \ 1211 59b2bd05SMasahiro Yamada usr/include $(INSTALL_HDR_PATH) 1212 6d716275SDavid Woodhouse 1213 8d730cfbSDavid WoodhousePHONY += headers_install 1214 59b2bd05SMasahiro Yamadaheaders_install: headers 1215 59b2bd05SMasahiro Yamada $(call cmd,headers_install) 1216 4f193362SPaul Smith 1217 1da177e4SLinus TorvaldsPHONY += archheaders archscripts 1218 1da177e4SLinus Torvalds 1219 a5bae54cSMasahiro Yamadahdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj 1220 1da177e4SLinus Torvalds 1221 59b2bd05SMasahiro YamadaPHONY += headers 1222 59b2bd05SMasahiro Yamadaheaders: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts 1223 9d022c54SMasahiro Yamada $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ 1224 2fb9b1bdSSam Ravnborg $(error Headers not exportable for the $(SRCARCH) architecture)) 1225 d5470d14SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=include/uapi 1226 d5470d14SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi 1227 1f85712eSMike Frysinger 1228 7ecaf069SMasahiro Yamada# Deprecated. It is no-op now. 1229 68475359SDavid WoodhousePHONY += headers_check 1230 7ecaf069SMasahiro Yamadaheaders_check: 1231 7ecaf069SMasahiro Yamada @: 1232 68475359SDavid Woodhouse 1233 e949f4c2SMasahiro Yamadaifdef CONFIG_HEADERS_INSTALL 1234 59b2bd05SMasahiro Yamadaprepare: headers 1235 e949f4c2SMasahiro Yamadaendif 1236 1da177e4SLinus Torvalds 1237 bdd7714bSMasahiro YamadaPHONY += scripts_unifdef 1238 bdd7714bSMasahiro Yamadascripts_unifdef: scripts_basic 1239 bdd7714bSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1240 bdd7714bSMasahiro Yamada 1241 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1242 5a5da78bSShuah Khan# Kernel selftest 1243 5a5da78bSShuah Khan 1244 5a5da78bSShuah KhanPHONY += kselftest 1245 5a5da78bSShuah Khankselftest: 1246 2bc84526SShuah Khan $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 1247 5a5da78bSShuah Khan 1248 17eac6c2SShuah Khankselftest-%: FORCE 1249 17eac6c2SShuah Khan $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $* 1250 dcb825a9SWang Long 1251 3d6dee7aSBamvor Jian ZhangPHONY += kselftest-merge 1252 3d6dee7aSBamvor Jian Zhangkselftest-merge: 1253 3d6dee7aSBamvor Jian Zhang $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1254 6d3db46cSDan Rue $(Q)find $(srctree)/tools/testing/selftests -name config | \ 1255 6d3db46cSDan Rue xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config 1256 3e4c6948SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1257 3d6dee7aSBamvor Jian Zhang 1258 5a5da78bSShuah Khan# --------------------------------------------------------------------------- 1259 37c8a5faSRob Herring# Devicetree files 1260 37c8a5faSRob Herring 1261 37c8a5faSRob Herringifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 1262 37c8a5faSRob Herringdtstree := arch/$(SRCARCH)/boot/dts 1263 37c8a5faSRob Herringendif 1264 37c8a5faSRob Herring 1265 37c8a5faSRob Herringifneq ($(dtstree),) 1266 37c8a5faSRob Herring 1267 a5139fb3SMasahiro Yamada%.dtb: include/config/kernel.release scripts_dtc 1268 37c8a5faSRob Herring $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1269 37c8a5faSRob Herring 1270 c473a8d0SMasahiro YamadaPHONY += dtbs dtbs_install dtbs_check 1271 b5154bf6SMasahiro Yamadadtbs: include/config/kernel.release scripts_dtc 1272 37c8a5faSRob Herring $(Q)$(MAKE) $(build)=$(dtstree) 1273 37c8a5faSRob Herring 1274 b5154bf6SMasahiro Yamadaifneq ($(filter dtbs_check, $(MAKECMDGOALS)),) 1275 e10c4321SMasahiro Yamadaexport CHECK_DTBS=y 1276 b5154bf6SMasahiro Yamadadtbs: dt_binding_check 1277 b5154bf6SMasahiro Yamadaendif 1278 b5154bf6SMasahiro Yamada 1279 b5154bf6SMasahiro Yamadadtbs_check: dtbs 1280 4f0e3a57SRob Herring 1281 37c8a5faSRob Herringdtbs_install: 1282 2431f22aSMasahiro Yamada $(Q)$(MAKE) $(dtbinst)=$(dtstree) dst=$(INSTALL_DTBS_PATH) 1283 37c8a5faSRob Herring 1284 37c8a5faSRob Herringifdef CONFIG_OF_EARLY_FLATTREE 1285 37c8a5faSRob Herringall: dtbs 1286 37c8a5faSRob Herringendif 1287 37c8a5faSRob Herring 1288 37c8a5faSRob Herringendif 1289 37c8a5faSRob Herring 1290 37c8a5faSRob HerringPHONY += scripts_dtc 1291 37c8a5faSRob Herringscripts_dtc: scripts_basic 1292 37c8a5faSRob Herring $(Q)$(MAKE) $(build)=scripts/dtc 1293 37c8a5faSRob Herring 1294 e10c4321SMasahiro Yamadaifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),) 1295 e10c4321SMasahiro Yamadaexport CHECK_DT_BINDING=y 1296 e10c4321SMasahiro Yamadaendif 1297 e10c4321SMasahiro Yamada 1298 c473a8d0SMasahiro YamadaPHONY += dt_binding_check 1299 4f0e3a57SRob Herringdt_binding_check: scripts_dtc 1300 4f0e3a57SRob Herring $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings 1301 4f0e3a57SRob Herring 1302 37c8a5faSRob Herring# --------------------------------------------------------------------------- 1303 1da177e4SLinus Torvalds# Modules 1304 1da177e4SLinus Torvalds 1305 1da177e4SLinus Torvaldsifdef CONFIG_MODULES 1306 1da177e4SLinus Torvalds 1307 1da177e4SLinus Torvalds# By default, build modules as well 1308 1da177e4SLinus Torvalds 1309 73d1393eSMichal Marekall: modules 1310 1da177e4SLinus Torvalds 1311 1da177e4SLinus Torvalds# Build modules 1312 551559e1STejun Heo# 1313 551559e1STejun Heo# A module can be listed more than once in obj-m resulting in 1314 551559e1STejun Heo# duplicate lines in modules.order files. Those are removed 1315 551559e1STejun Heo# using awk while concatenating to the final file. 1316 1da177e4SLinus Torvalds 1317 4f193362SPaul SmithPHONY += modules 1318 8b41fc44SMasahiro Yamadamodules: $(if $(KBUILD_BUILTIN),vmlinux) modules.order 1319 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1320 3a48a919SMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh 1321 1da177e4SLinus Torvalds 1322 c99f3918SMasahiro Yamadamodules.order: descend 1323 c99f3918SMasahiro Yamada $(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(build-dirs)) > $@ 1324 a6c36632SMichal Marek 1325 1da177e4SLinus Torvalds# Target to prepare building external modules 1326 4f193362SPaul SmithPHONY += modules_prepare 1327 059bc9fcSMasahiro Yamadamodules_prepare: prepare 1328 1da177e4SLinus Torvalds 1329 1da177e4SLinus Torvalds# Target to install modules 1330 4f193362SPaul SmithPHONY += modules_install 1331 1da177e4SLinus Torvaldsmodules_install: _modinst_ _modinst_post 1332 1da177e4SLinus Torvalds 1333 4f193362SPaul SmithPHONY += _modinst_ 1334 2da30e70SMichal Marek_modinst_: 1335 1da177e4SLinus Torvalds @rm -rf $(MODLIB)/kernel 1336 1da177e4SLinus Torvalds @rm -f $(MODLIB)/source 1337 1da177e4SLinus Torvalds @mkdir -p $(MODLIB)/kernel 1338 8e9b4667SMasahiro Yamada @ln -s $(abspath $(srctree)) $(MODLIB)/source 1339 1da177e4SLinus Torvalds @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1340 1da177e4SLinus Torvalds rm -f $(MODLIB)/build ; \ 1341 7e1c0477SMichal Marek ln -s $(CURDIR) $(MODLIB)/build ; \ 1342 1da177e4SLinus Torvalds fi 1343 1bd9a468SMasahiro Yamada @sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order 1344 8b41fc44SMasahiro Yamada @cp -f modules.builtin $(MODLIB)/ 1345 898490c0SAlexey Gladkov @cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/ 1346 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1347 1da177e4SLinus Torvalds 1348 50a8ec31SSam Ravnborg# This depmod is only for convenience to give the initial 1349 1da177e4SLinus Torvalds# boot a modules.dep even before / is mounted read-write. However the 1350 1da177e4SLinus Torvalds# boot script depmod is the master version. 1351 4f193362SPaul SmithPHONY += _modinst_post 1352 6d128e1eSLinus Torvalds_modinst_post: _modinst_ 1353 50a8ec31SSam Ravnborg $(call cmd,depmod) 1354 1da177e4SLinus Torvalds 1355 d890f510SJosh Boyerifeq ($(CONFIG_MODULE_SIG), y) 1356 d890f510SJosh BoyerPHONY += modules_sign 1357 d890f510SJosh Boyermodules_sign: 1358 d890f510SJosh Boyer $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1359 d890f510SJosh Boyerendif 1360 d890f510SJosh Boyer 1361 1da177e4SLinus Torvaldselse # CONFIG_MODULES 1362 1da177e4SLinus Torvalds 1363 1da177e4SLinus Torvalds# Modules not configured 1364 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1365 1da177e4SLinus Torvalds 1366 612e47ceSMasahiro YamadaPHONY += modules modules_install 1367 612e47ceSMasahiro Yamadamodules modules_install: 1368 5369f550SMichal Marek @echo >&2 1369 5369f550SMichal Marek @echo >&2 "The present kernel configuration has modules disabled." 1370 5369f550SMichal Marek @echo >&2 "Type 'make config' and enable loadable module support." 1371 5369f550SMichal Marek @echo >&2 "Then build a kernel with module support enabled." 1372 5369f550SMichal Marek @echo >&2 1373 1da177e4SLinus Torvalds @exit 1 1374 1da177e4SLinus Torvalds 1375 1da177e4SLinus Torvaldsendif # CONFIG_MODULES 1376 1da177e4SLinus Torvalds 1377 1da177e4SLinus Torvalds### 1378 1da177e4SLinus Torvalds# Cleaning is done on three levels. 1379 1da177e4SLinus Torvalds# make clean Delete most generated files 1380 1da177e4SLinus Torvalds# Leave enough to build external modules 1381 1da177e4SLinus Torvalds# make mrproper Delete the current configuration, and all generated files 1382 1da177e4SLinus Torvalds# make distclean Remove editor backup files, patch leftover files and the like 1383 1da177e4SLinus Torvalds 1384 1da177e4SLinus Torvalds# Directories & files removed with 'make clean' 1385 b7dca6ddSMasahiro YamadaCLEAN_DIRS += include/ksym 1386 8b41fc44SMasahiro YamadaCLEAN_FILES += modules.builtin modules.builtin.modinfo modules.nsdeps 1387 1da177e4SLinus Torvalds 1388 1da177e4SLinus Torvalds# Directories & files removed with 'make mrproper' 1389 d6fc9fcbSMasahiro YamadaMRPROPER_DIRS += include/config include/generated \ 1390 46a63d4bSMasahiro Yamada arch/$(SRCARCH)/include/generated .tmp_objdiff \ 1391 46a63d4bSMasahiro Yamada debian/ snap/ tar-install/ 1392 278ae604SMasahiro YamadaMRPROPER_FILES += .config .config.old .version \ 1393 46457133SMasahiro Yamada Module.symvers \ 1394 fb117949SDavid Woodhouse signing_key.pem signing_key.priv signing_key.x509 \ 1395 fb117949SDavid Woodhouse x509.genkey extra_certificates signing_key.x509.keyid \ 1396 46a63d4bSMasahiro Yamada signing_key.x509.signer vmlinux-gdb.py \ 1397 46a63d4bSMasahiro Yamada *.spec 1398 1da177e4SLinus Torvalds 1399 46457133SMasahiro Yamada# Directories & files removed with 'make distclean' 1400 46457133SMasahiro YamadaDISTCLEAN_DIRS += 1401 46457133SMasahiro YamadaDISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS 1402 46457133SMasahiro Yamada 1403 1da177e4SLinus Torvalds# clean - Delete most, but leave enough to build external modules 1404 1da177e4SLinus Torvalds# 1405 1da177e4SLinus Torvaldsclean: rm-dirs := $(CLEAN_DIRS) 1406 1da177e4SLinus Torvaldsclean: rm-files := $(CLEAN_FILES) 1407 1da177e4SLinus Torvalds 1408 76cd306dSMasahiro YamadaPHONY += archclean vmlinuxclean 1409 1da177e4SLinus Torvalds 1410 bd1ee804SPawel Mollvmlinuxclean: 1411 bd1ee804SPawel Moll $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1412 fbe6e37dSNicholas Piggin $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1413 bd1ee804SPawel Moll 1414 bd1ee804SPawel Mollclean: archclean vmlinuxclean 1415 1da177e4SLinus Torvalds 1416 1da177e4SLinus Torvalds# mrproper - Delete all generated files, including .config 1417 1da177e4SLinus Torvalds# 1418 1da177e4SLinus Torvaldsmrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1419 1da177e4SLinus Torvaldsmrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1420 cb43fb57SMauro Carvalho Chehabmrproper-dirs := $(addprefix _mrproper_,scripts) 1421 1da177e4SLinus Torvalds 1422 b421b8a6SMasahiro YamadaPHONY += $(mrproper-dirs) mrproper 1423 1da177e4SLinus Torvalds$(mrproper-dirs): 1424 1da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1425 1da177e4SLinus Torvalds 1426 b421b8a6SMasahiro Yamadamrproper: clean $(mrproper-dirs) 1427 1da177e4SLinus Torvalds $(call cmd,rmdirs) 1428 1da177e4SLinus Torvalds $(call cmd,rmfiles) 1429 1da177e4SLinus Torvalds 1430 1da177e4SLinus Torvalds# distclean 1431 1da177e4SLinus Torvalds# 1432 46457133SMasahiro Yamadadistclean: rm-dirs := $(wildcard $(DISTCLEAN_DIRS)) 1433 46457133SMasahiro Yamadadistclean: rm-files := $(wildcard $(DISTCLEAN_FILES)) 1434 46457133SMasahiro Yamada 1435 4f193362SPaul SmithPHONY += distclean 1436 1da177e4SLinus Torvalds 1437 1da177e4SLinus Torvaldsdistclean: mrproper 1438 46457133SMasahiro Yamada $(call cmd,rmdirs) 1439 46457133SMasahiro Yamada $(call cmd,rmfiles) 1440 1da177e4SLinus Torvalds @find $(srctree) $(RCS_FIND_IGNORE) \ 1441 1da177e4SLinus Torvalds \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1442 f78271dfSMasahiro Yamada -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1443 f78271dfSMasahiro Yamada -o -name 'core' \) \ 1444 1da177e4SLinus Torvalds -type f -print | xargs rm -f 1445 1da177e4SLinus Torvalds 1446 1da177e4SLinus Torvalds 1447 1da177e4SLinus Torvalds# Packaging of the kernel to various formats 1448 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1449 1da177e4SLinus Torvalds 1450 bafb6747SArnaldo Carvalho de Melo%src-pkg: FORCE 1451 000ec95fSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1452 031ecc6dSZach Brown%pkg: include/config/kernel.release FORCE 1453 000ec95fSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1454 1da177e4SLinus Torvalds 1455 1da177e4SLinus Torvalds# Brief documentation of the typical targets used 1456 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1457 1da177e4SLinus Torvalds 1458 5dffbe81SSegher Boessenkoolboards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1459 a1e7b7bbSKonstantin Khlebnikovboards := $(sort $(notdir $(boards))) 1460 5dffbe81SSegher Boessenkoolboard-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1461 5dffbe81SSegher Boessenkoolboard-dirs := $(sort $(notdir $(board-dirs:/=))) 1462 1da177e4SLinus Torvalds 1463 fe69b420SMasahiro YamadaPHONY += help 1464 1da177e4SLinus Torvaldshelp: 1465 1da177e4SLinus Torvalds @echo 'Cleaning targets:' 1466 5ea084efSSamuel Tardieu @echo ' clean - Remove most generated files but keep the config and' 1467 5cc8d246SJesper Juhl @echo ' enough build support to build external modules' 1468 5ea084efSSamuel Tardieu @echo ' mrproper - Remove all generated files + config + various backup files' 1469 5cc8d246SJesper Juhl @echo ' distclean - mrproper + remove editor backup and patch files' 1470 1da177e4SLinus Torvalds @echo '' 1471 1da177e4SLinus Torvalds @echo 'Configuration targets:' 1472 1da177e4SLinus Torvalds @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1473 1da177e4SLinus Torvalds @echo '' 1474 1da177e4SLinus Torvalds @echo 'Other generic targets:' 1475 1da177e4SLinus Torvalds @echo ' all - Build all targets marked with [*]' 1476 1da177e4SLinus Torvalds @echo '* vmlinux - Build the bare kernel' 1477 1da177e4SLinus Torvalds @echo '* modules - Build all modules' 1478 9cc5d74cSBodo Eggert @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1479 1da177e4SLinus Torvalds @echo ' dir/ - Build all files in dir and below' 1480 40ab87a4SWang YanQing @echo ' dir/file.[ois] - Build specified target only' 1481 433db3e2SVinÃcius Tinti @echo ' dir/file.ll - Build the LLVM assembly file' 1482 433db3e2SVinÃcius Tinti @echo ' (requires compiler support for LLVM assembly generation)' 1483 62718979SJoe Perches @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1484 62718979SJoe Perches @echo ' (requires a recent binutils and recent build (System.map))' 1485 155ad605SSam Ravnborg @echo ' dir/file.ko - Build module including final link' 1486 c4d5ee67SRobert P. J. Day @echo ' modules_prepare - Set up for building external modules' 1487 1da177e4SLinus Torvalds @echo ' tags/TAGS - Generate tags file for editors' 1488 1da177e4SLinus Torvalds @echo ' cscope - Generate cscope index' 1489 f4ed1009SJianbin Kang @echo ' gtags - Generate GNU GLOBAL index' 1490 3f1d9a6cSMichal Marek @echo ' kernelrelease - Output the release version string (use with make -s)' 1491 3f1d9a6cSMichal Marek @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1492 3f1d9a6cSMichal Marek @echo ' image_name - Output the image name (use with make -s)' 1493 2fb9b1bdSSam Ravnborg @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1494 59df3230SGeert Uytterhoeven echo ' (default: $(INSTALL_HDR_PATH))'; \ 1495 2fb9b1bdSSam Ravnborg echo '' 1496 31b8cc80SRandy Dunlap @echo 'Static analysers:' 1497 1da177e4SLinus Torvalds @echo ' checkstack - Generate a list of stack hogs' 1498 1da177e4SLinus Torvalds @echo ' namespacecheck - Name space analysis on compiled kernel' 1499 aa025e7dSSam Ravnborg @echo ' versioncheck - Sanity check on version.h usage' 1500 ec2d987fSRandy Dunlap @echo ' includecheck - Check for duplicate included header files' 1501 295ac051SAdrian Bunk @echo ' export_report - List the usages of all exported symbols' 1502 74425eeeSNicolas Palix @echo ' headerdep - Detect inclusion cycles in headers' 1503 7f855fc8SMasahiro Yamada @echo ' coccicheck - Check with Coccinelle' 1504 74425eeeSNicolas Palix @echo '' 1505 eb8305aeSMatthias Maennich @echo 'Tools:' 1506 eb8305aeSMatthias Maennich @echo ' nsdeps - Generate missing symbol namespace dependencies' 1507 eb8305aeSMatthias Maennich @echo '' 1508 31b8cc80SRandy Dunlap @echo 'Kernel selftest:' 1509 e51d8dacSShuah Khan @echo ' kselftest - Build and run kernel selftest' 1510 5a5da78bSShuah Khan @echo ' Build, install, and boot kernel before' 1511 5a5da78bSShuah Khan @echo ' running kselftest on it' 1512 e51d8dacSShuah Khan @echo ' Run as root for full coverage' 1513 e51d8dacSShuah Khan @echo ' kselftest-all - Build kernel selftest' 1514 e51d8dacSShuah Khan @echo ' kselftest-install - Build and install kernel selftest' 1515 dcb825a9SWang Long @echo ' kselftest-clean - Remove all generated kselftest files' 1516 e51d8dacSShuah Khan @echo ' kselftest-merge - Merge all the config dependencies of' 1517 e51d8dacSShuah Khan @echo ' kselftest to existing .config.' 1518 5a5da78bSShuah Khan @echo '' 1519 37c8a5faSRob Herring @$(if $(dtstree), \ 1520 37c8a5faSRob Herring echo 'Devicetree:'; \ 1521 37c8a5faSRob Herring echo '* dtbs - Build device tree blobs for enabled boards'; \ 1522 37c8a5faSRob Herring echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ 1523 7aa8dd91SStephen Boyd echo ' dt_binding_check - Validate device tree binding documents'; \ 1524 7aa8dd91SStephen Boyd echo ' dtbs_check - Validate device tree source files';\ 1525 37c8a5faSRob Herring echo '') 1526 37c8a5faSRob Herring 1527 31b8cc80SRandy Dunlap @echo 'Userspace tools targets:' 1528 31b8cc80SRandy Dunlap @echo ' use "make tools/help"' 1529 31b8cc80SRandy Dunlap @echo ' or "cd tools; make help"' 1530 31b8cc80SRandy Dunlap @echo '' 1531 1da177e4SLinus Torvalds @echo 'Kernel packaging:' 1532 000ec95fSMasahiro Yamada @$(MAKE) -f $(srctree)/scripts/Makefile.package help 1533 1da177e4SLinus Torvalds @echo '' 1534 1da177e4SLinus Torvalds @echo 'Documentation targets:' 1535 cb43fb57SMauro Carvalho Chehab @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 1536 1da177e4SLinus Torvalds @echo '' 1537 01dee188SAndres Salomon @echo 'Architecture specific targets ($(SRCARCH)):' 1538 1da177e4SLinus Torvalds @$(if $(archhelp),$(archhelp),\ 1539 01dee188SAndres Salomon echo ' No architecture specific help defined for $(SRCARCH)') 1540 1da177e4SLinus Torvalds @echo '' 1541 1da177e4SLinus Torvalds @$(if $(boards), \ 1542 1da177e4SLinus Torvalds $(foreach b, $(boards), \ 1543 4234448bSGeert Uytterhoeven printf " %-27s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1544 1da177e4SLinus Torvalds echo '') 1545 5dffbe81SSegher Boessenkool @$(if $(board-dirs), \ 1546 5dffbe81SSegher Boessenkool $(foreach b, $(board-dirs), \ 1547 5dffbe81SSegher Boessenkool printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1548 5dffbe81SSegher Boessenkool printf " %-16s - Show all of the above\\n" help-boards; \ 1549 5dffbe81SSegher Boessenkool echo '') 1550 1da177e4SLinus Torvalds 1551 1da177e4SLinus Torvalds @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1552 45d506bdSSam Ravnborg @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1553 1da177e4SLinus Torvalds @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1554 a64c0440SGeert Uytterhoeven @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK' 1555 a64c0440SGeert Uytterhoeven @echo ' (sparse by default)' 1556 701842e3SDustin Kirkland @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1557 af07ce3eSIngo Molnar @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1558 e27128dbSMasahiro Yamada @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where' 1559 28bc20dcSSam Ravnborg @echo ' 1: warnings which may be relevant and do not occur too often' 1560 28bc20dcSSam Ravnborg @echo ' 2: warnings which occur quite often but may still be relevant' 1561 28bc20dcSSam Ravnborg @echo ' 3: more obscure warnings, can most likely be ignored' 1562 a6de553dSMichal Marek @echo ' Multiple levels can be combined with W=12 or W=123' 1563 1da177e4SLinus Torvalds @echo '' 1564 1da177e4SLinus Torvalds @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1565 1da177e4SLinus Torvalds @echo 'For further info see the ./README file' 1566 1da177e4SLinus Torvalds 1567 1da177e4SLinus Torvalds 1568 5dffbe81SSegher Boessenkoolhelp-board-dirs := $(addprefix help-,$(board-dirs)) 1569 5dffbe81SSegher Boessenkool 1570 5dffbe81SSegher Boessenkoolhelp-boards: $(help-board-dirs) 1571 5dffbe81SSegher Boessenkool 1572 fbae4d58SMichal Marekboards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1573 5dffbe81SSegher Boessenkool 1574 5dffbe81SSegher Boessenkool$(help-board-dirs): help-%: 1575 5dffbe81SSegher Boessenkool @echo 'Architecture specific targets ($(SRCARCH) $*):' 1576 5dffbe81SSegher Boessenkool @$(if $(boards-per-dir), \ 1577 5dffbe81SSegher Boessenkool $(foreach b, $(boards-per-dir), \ 1578 5dffbe81SSegher Boessenkool printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1579 5dffbe81SSegher Boessenkool echo '') 1580 5dffbe81SSegher Boessenkool 1581 5dffbe81SSegher Boessenkool 1582 1da177e4SLinus Torvalds# Documentation targets 1583 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1584 e8939222SJani NikulaDOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1585 e8939222SJani Nikula linkcheckdocs dochelp refcheckdocs 1586 22cba31bSJani NikulaPHONY += $(DOC_TARGETS) 1587 bc7b752aSMasahiro Yamada$(DOC_TARGETS): 1588 cb43fb57SMauro Carvalho Chehab $(Q)$(MAKE) $(build)=Documentation $@ 1589 1da177e4SLinus Torvalds 1590 67274c08SMasahiro Yamada# Misc 1591 67274c08SMasahiro Yamada# --------------------------------------------------------------------------- 1592 67274c08SMasahiro Yamada 1593 67274c08SMasahiro YamadaPHONY += scripts_gdb 1594 7a739ce5SMasahiro Yamadascripts_gdb: prepare0 1595 1e5ff84fSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts/gdb 1596 8d2e5200SMasahiro Yamada $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) 1597 67274c08SMasahiro Yamada 1598 67274c08SMasahiro Yamadaifdef CONFIG_GDB_SCRIPTS 1599 67274c08SMasahiro Yamadaall: scripts_gdb 1600 67274c08SMasahiro Yamadaendif 1601 67274c08SMasahiro Yamada 1602 1da177e4SLinus Torvaldselse # KBUILD_EXTMOD 1603 1da177e4SLinus Torvalds 1604 1da177e4SLinus Torvalds### 1605 1da177e4SLinus Torvalds# External module support. 1606 1da177e4SLinus Torvalds# When building external modules the kernel used as basis is considered 1607 1da177e4SLinus Torvalds# read-only, and no consistency checks are made and the make 1608 1da177e4SLinus Torvalds# system is not used on the basis kernel. If updates are required 1609 1da177e4SLinus Torvalds# in the basis kernel ordinary make commands (without M=...) must 1610 1da177e4SLinus Torvalds# be used. 1611 1da177e4SLinus Torvalds# 1612 1da177e4SLinus Torvalds# The following are the only valid targets when building external 1613 1da177e4SLinus Torvalds# modules. 1614 1da177e4SLinus Torvalds# make M=dir clean Delete all automatically generated files 1615 1da177e4SLinus Torvalds# make M=dir modules Make all modules in specified dir 1616 1da177e4SLinus Torvalds# make M=dir Same as 'make M=dir modules' 1617 1da177e4SLinus Torvalds# make M=dir modules_install 1618 070b98bfSSam Ravnborg# Install the modules built in the module directory 1619 1da177e4SLinus Torvalds# Assumes install directory is already created 1620 1da177e4SLinus Torvalds 1621 1da177e4SLinus Torvalds# We are always building modules 1622 1da177e4SLinus TorvaldsKBUILD_MODULES := 1 1623 1da177e4SLinus Torvalds 1624 4f193362SPaul SmithPHONY += $(objtree)/Module.symvers 1625 1da177e4SLinus Torvalds$(objtree)/Module.symvers: 1626 1da177e4SLinus Torvalds @test -e $(objtree)/Module.symvers || ( \ 1627 1da177e4SLinus Torvalds echo; \ 1628 1da177e4SLinus Torvalds echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1629 1da177e4SLinus Torvalds echo " is missing; modules will have no dependencies and modversions."; \ 1630 1da177e4SLinus Torvalds echo ) 1631 1da177e4SLinus Torvalds 1632 c99f3918SMasahiro Yamadabuild-dirs := $(KBUILD_EXTMOD) 1633 c99f3918SMasahiro YamadaPHONY += modules 1634 c99f3918SMasahiro Yamadamodules: descend $(objtree)/Module.symvers 1635 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1636 1da177e4SLinus Torvalds 1637 4f193362SPaul SmithPHONY += modules_install 1638 a67dc21aSSam Ravnborgmodules_install: _emodinst_ _emodinst_post 1639 a67dc21aSSam Ravnborg 1640 a67dc21aSSam Ravnborginstall-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1641 4f193362SPaul SmithPHONY += _emodinst_ 1642 a67dc21aSSam Ravnborg_emodinst_: 1643 a67dc21aSSam Ravnborg $(Q)mkdir -p $(MODLIB)/$(install-dir) 1644 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1645 1da177e4SLinus Torvalds 1646 4f193362SPaul SmithPHONY += _emodinst_post 1647 a67dc21aSSam Ravnborg_emodinst_post: _emodinst_ 1648 a67dc21aSSam Ravnborg $(call cmd,depmod) 1649 a67dc21aSSam Ravnborg 1650 76cd306dSMasahiro Yamadaclean-dirs := $(KBUILD_EXTMOD) 1651 bc35d4bdSMasahiro Yamadaclean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps 1652 1da177e4SLinus Torvalds 1653 d4945049SMasahiro YamadaPHONY += / 1654 d4945049SMasahiro Yamada/: 1655 d4945049SMasahiro Yamada @echo >&2 '"$(MAKE) /" is no longer supported. Please use "$(MAKE) ./" instead.' 1656 d4945049SMasahiro Yamada 1657 fe69b420SMasahiro YamadaPHONY += help 1658 1da177e4SLinus Torvaldshelp: 1659 1da177e4SLinus Torvalds @echo ' Building external modules.' 1660 1da177e4SLinus Torvalds @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1661 1da177e4SLinus Torvalds @echo '' 1662 1da177e4SLinus Torvalds @echo ' modules - default target, build the module(s)' 1663 1da177e4SLinus Torvalds @echo ' modules_install - install the module' 1664 1da177e4SLinus Torvalds @echo ' clean - remove generated files in module directory only' 1665 1da177e4SLinus Torvalds @echo '' 1666 06300b21SSam Ravnborg 1667 059bc9fcSMasahiro YamadaPHONY += prepare 1668 1da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 1669 1da177e4SLinus Torvalds 1670 b1fbfcb4SMasahiro Yamada# Single targets 1671 b1fbfcb4SMasahiro Yamada# --------------------------------------------------------------------------- 1672 b1fbfcb4SMasahiro Yamada# To build individual files in subdirectories, you can do like this: 1673 b1fbfcb4SMasahiro Yamada# 1674 b1fbfcb4SMasahiro Yamada# make foo/bar/baz.s 1675 b1fbfcb4SMasahiro Yamada# 1676 b1fbfcb4SMasahiro Yamada# The supported suffixes for single-target are listed in 'single-targets' 1677 b1fbfcb4SMasahiro Yamada# 1678 b1fbfcb4SMasahiro Yamada# To build only under specific subdirectories, you can do like this: 1679 b1fbfcb4SMasahiro Yamada# 1680 b1fbfcb4SMasahiro Yamada# make foo/bar/baz/ 1681 b1fbfcb4SMasahiro Yamada 1682 b1fbfcb4SMasahiro Yamadaifdef single-build 1683 b1fbfcb4SMasahiro Yamada 1684 b1fbfcb4SMasahiro Yamada# .ko is special because modpost is needed 1685 b1fbfcb4SMasahiro Yamadasingle-ko := $(sort $(filter %.ko, $(MAKECMDGOALS))) 1686 b1fbfcb4SMasahiro Yamadasingle-no-ko := $(sort $(patsubst %.ko,%.mod, $(MAKECMDGOALS))) 1687 b1fbfcb4SMasahiro Yamada 1688 b1fbfcb4SMasahiro Yamada$(single-ko): single_modpost 1689 b1fbfcb4SMasahiro Yamada @: 1690 b1fbfcb4SMasahiro Yamada$(single-no-ko): descend 1691 b1fbfcb4SMasahiro Yamada @: 1692 b1fbfcb4SMasahiro Yamada 1693 b1fbfcb4SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 1694 b1fbfcb4SMasahiro Yamada# For the single build of in-tree modules, use a temporary file to avoid 1695 b1fbfcb4SMasahiro Yamada# the situation of modules_install installing an invalid modules.order. 1696 b1fbfcb4SMasahiro YamadaMODORDER := .modules.tmp 1697 b1fbfcb4SMasahiro Yamadaendif 1698 b1fbfcb4SMasahiro Yamada 1699 b1fbfcb4SMasahiro YamadaPHONY += single_modpost 1700 b1fbfcb4SMasahiro Yamadasingle_modpost: $(single-no-ko) 1701 b1fbfcb4SMasahiro Yamada $(Q){ $(foreach m, $(single-ko), echo $(extmod-prefix)$m;) } > $(MODORDER) 1702 b1fbfcb4SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1703 b1fbfcb4SMasahiro Yamada 1704 b1fbfcb4SMasahiro YamadaKBUILD_MODULES := 1 1705 b1fbfcb4SMasahiro Yamada 1706 b1fbfcb4SMasahiro Yamadaexport KBUILD_SINGLE_TARGETS := $(addprefix $(extmod-prefix), $(single-no-ko)) 1707 b1fbfcb4SMasahiro Yamada 1708 b1fbfcb4SMasahiro Yamada# trim unrelated directories 1709 b1fbfcb4SMasahiro Yamadabuild-dirs := $(foreach d, $(build-dirs), \ 1710 b1fbfcb4SMasahiro Yamada $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d))) 1711 b1fbfcb4SMasahiro Yamada 1712 b1fbfcb4SMasahiro Yamadaendif 1713 b1fbfcb4SMasahiro Yamada 1714 c99f3918SMasahiro Yamada# Handle descending into subdirectories listed in $(build-dirs) 1715 c99f3918SMasahiro Yamada# Preset locale variables to speed up the build process. Limit locale 1716 c99f3918SMasahiro Yamada# tweaks to this spot to avoid wrong language settings when running 1717 c99f3918SMasahiro Yamada# make menuconfig etc. 1718 c99f3918SMasahiro Yamada# Error messages still appears in the original language 1719 c99f3918SMasahiro YamadaPHONY += descend $(build-dirs) 1720 c99f3918SMasahiro Yamadadescend: $(build-dirs) 1721 c99f3918SMasahiro Yamada$(build-dirs): prepare 1722 b1fbfcb4SMasahiro Yamada $(Q)$(MAKE) $(build)=$@ \ 1723 f566e1fbSMasahiro Yamada single-build=$(if $(filter-out $@/, $(filter $@/%, $(single-no-ko))),1) \ 1724 b1fbfcb4SMasahiro Yamada need-builtin=1 need-modorder=1 1725 c99f3918SMasahiro Yamada 1726 76cd306dSMasahiro Yamadaclean-dirs := $(addprefix _clean_, $(clean-dirs)) 1727 76cd306dSMasahiro YamadaPHONY += $(clean-dirs) clean 1728 76cd306dSMasahiro Yamada$(clean-dirs): 1729 76cd306dSMasahiro Yamada $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1730 76cd306dSMasahiro Yamada 1731 88d7be03SMichal Marekclean: $(clean-dirs) 1732 88d7be03SMichal Marek $(call cmd,rmdirs) 1733 88d7be03SMichal Marek $(call cmd,rmfiles) 1734 43f67c98SKevin Cernekee @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1735 ef46d9b3SMasahiro Yamada \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ 1736 4f0e3a57SRob Herring -o -name '*.ko.*' \ 1737 4f0e3a57SRob Herring -o -name '*.dtb' -o -name '*.dtb.S' -o -name '*.dt.yaml' \ 1738 ef46d9b3SMasahiro Yamada -o -name '*.dwo' -o -name '*.lst' \ 1739 bbc55bdeSMasahiro Yamada -o -name '*.su' -o -name '*.mod' \ 1740 88d7be03SMichal Marek -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1741 9a8dfb39SMasahiro Yamada -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 1742 4fa8bc94SMasahiro Yamada -o -name '*.asn1.[ch]' \ 1743 88d7be03SMichal Marek -o -name '*.symtypes' -o -name 'modules.order' \ 1744 8b41fc44SMasahiro Yamada -o -name '.tmp_*.o.*' \ 1745 6b90bd4bSEmese Revfy -o -name '*.c.[012]*.*' \ 1746 433db3e2SVinÃcius Tinti -o -name '*.ll' \ 1747 88d7be03SMichal Marek -o -name '*.gcno' \) -type f -print | xargs rm -f 1748 88d7be03SMichal Marek 1749 1da177e4SLinus Torvalds# Generate tags for editors 1750 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1751 a680eedcSSam Ravnborgquiet_cmd_tags = GEN $@ 1752 858805b3SMasahiro Yamada cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@ 1753 1da177e4SLinus Torvalds 1754 f4ed1009SJianbin Kangtags TAGS cscope gtags: FORCE 1755 1da177e4SLinus Torvalds $(call cmd,tags) 1756 1da177e4SLinus Torvalds 1757 eb8305aeSMatthias Maennich# Script to generate missing namespace dependencies 1758 eb8305aeSMatthias Maennich# --------------------------------------------------------------------------- 1759 eb8305aeSMatthias Maennich 1760 eb8305aeSMatthias MaennichPHONY += nsdeps 1761 bff9c62bSMasahiro Yamadansdeps: export KBUILD_NSDEPS=1 1762 eb8305aeSMatthias Maennichnsdeps: modules 1763 bff9c62bSMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/nsdeps 1764 eb8305aeSMatthias Maennich 1765 1da177e4SLinus Torvalds# Scripts to check various things for consistency 1766 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1767 1da177e4SLinus Torvalds 1768 279f3dd3SPeter FoleyPHONY += includecheck versioncheck coccicheck namespacecheck export_report 1769 279f3dd3SPeter Foley 1770 1da177e4SLinus Torvaldsincludecheck: 1771 436f876cSPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 1772 1da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 1773 80007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1774 1da177e4SLinus Torvalds 1775 1da177e4SLinus Torvaldsversioncheck: 1776 2ee2d292SPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 1777 1da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 1778 80007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1779 1da177e4SLinus Torvalds 1780 74425eeeSNicolas Palixcoccicheck: 1781 858805b3SMasahiro Yamada $(Q)$(BASH) $(srctree)/scripts/$@ 1782 74425eeeSNicolas Palix 1783 1da177e4SLinus Torvaldsnamespacecheck: 1784 1da177e4SLinus Torvalds $(PERL) $(srctree)/scripts/namespace.pl 1785 1da177e4SLinus Torvalds 1786 295ac051SAdrian Bunkexport_report: 1787 295ac051SAdrian Bunk $(PERL) $(srctree)/scripts/export_report.pl 1788 295ac051SAdrian Bunk 1789 c398ff00SMike MarciniszynPHONY += checkstack kernelrelease kernelversion image_name 1790 e3ccf6e3SJeff Dike 1791 011e3a9aSJeff Dike# UML needs a little special treatment here. It wants to use the host 1792 011e3a9aSJeff Dike# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1793 011e3a9aSJeff Dike# else wants $(ARCH), including people doing cross-builds, which means 1794 011e3a9aSJeff Dike# that $(SUBARCH) doesn't work here. 1795 011e3a9aSJeff Dikeifeq ($(ARCH), um) 1796 011e3a9aSJeff DikeCHECKSTACK_ARCH := $(SUBARCH) 1797 011e3a9aSJeff Dikeelse 1798 011e3a9aSJeff DikeCHECKSTACK_ARCH := $(ARCH) 1799 011e3a9aSJeff Dikeendif 1800 1da177e4SLinus Torvaldscheckstack: 1801 1da177e4SLinus Torvalds $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1802 75dd4747SMasahiro Yamada $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1803 1da177e4SLinus Torvalds 1804 7b8ea53dSAmerigo Wangkernelrelease: 1805 7b8ea53dSAmerigo Wang @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1806 01ab1788SAmerigo Wang 1807 cb58455cSSam Ravnborgkernelversion: 1808 2244cbd8SSam Ravnborg @echo $(KERNELVERSION) 1809 1da177e4SLinus Torvalds 1810 c398ff00SMike Marciniszynimage_name: 1811 c398ff00SMike Marciniszyn @echo $(KBUILD_IMAGE) 1812 c398ff00SMike Marciniszyn 1813 ea01fa9fSBorislav Petkov# Clear a bunch of variables before executing the submake 1814 f47a23ceSMasahiro Yamada 1815 f47a23ceSMasahiro Yamadaifeq ($(quiet),silent_) 1816 f47a23ceSMasahiro Yamadatools_silent=s 1817 f47a23ceSMasahiro Yamadaendif 1818 f47a23ceSMasahiro Yamada 1819 ea01fa9fSBorislav Petkovtools/: FORCE 1820 bf35182fSDavid Howells $(Q)mkdir -p $(objtree)/tools 1821 75dd4747SMasahiro Yamada $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ 1822 ea01fa9fSBorislav Petkov 1823 ea01fa9fSBorislav Petkovtools/%: FORCE 1824 bf35182fSDavid Howells $(Q)mkdir -p $(objtree)/tools 1825 75dd4747SMasahiro Yamada $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ $* 1826 ea01fa9fSBorislav Petkov 1827 1da177e4SLinus Torvalds# FIXME Should go into a make.lib or something 1828 1da177e4SLinus Torvalds# =========================================================================== 1829 1da177e4SLinus Torvalds 1830 1da177e4SLinus Torvaldsquiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1831 1da177e4SLinus Torvalds cmd_rmdirs = rm -rf $(rm-dirs) 1832 1da177e4SLinus Torvalds 1833 1da177e4SLinus Torvaldsquiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1834 1da177e4SLinus Torvalds cmd_rmfiles = rm -f $(rm-files) 1835 1da177e4SLinus Torvalds 1836 bc3c26feSUwe Kleine-König# Run depmod only if we have System.map and depmod is executable 1837 50a8ec31SSam Ravnborgquiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1838 569658ddSMichal Marek cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 1839 5a144a1aSMasahiro Yamada $(KERNELRELEASE) 1840 50a8ec31SSam Ravnborg 1841 392885eeSMasahiro Yamada# read saved command lines for existing targets 1842 392885eeSMasahiro Yamadaexisting-targets := $(wildcard $(sort $(targets))) 1843 1da177e4SLinus Torvalds 1844 b999923cSMasahiro Yamada-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 1845 1da177e4SLinus Torvalds 1846 46b7c492SSZ Lin (林上智)endif # config-build 1847 2042b548SMasahiro Yamadaendif # mixed-build 1848 688931a5SMasahiro Yamadaendif # need-sub-make 1849 1da177e4SLinus Torvalds 1850 4f193362SPaul SmithPHONY += FORCE 1851 1da177e4SLinus TorvaldsFORCE: 1852 4f193362SPaul Smith 1853 bd412d81SUlf Magnusson# Declare the contents of the PHONY variable as phony. We keep that 1854 fe8d0a41SKirill Smelkov# information in a variable so we can use it in if_changed and friends. 1855 4f193362SPaul Smith.PHONY: $(PHONY) 1856