1 c517d838SLinus TorvaldsVERSION = 4 2 f55532a0SLinus TorvaldsPATCHLEVEL = 6 3 55922c9dSLinus TorvaldsSUBLEVEL = 0 4 f55532a0SLinus TorvaldsEXTRAVERSION = -rc1 5 25cb62b7SLinus TorvaldsNAME = Blurry Fish Butt 6 1da177e4SLinus Torvalds 7 1da177e4SLinus Torvalds# *DOCUMENTATION* 8 1da177e4SLinus Torvalds# To see a list of typical targets execute "make help" 9 1da177e4SLinus Torvalds# More info can be located in ./README 10 1da177e4SLinus Torvalds# Comments in this file are targeted only to the developer, do not 11 1da177e4SLinus Torvalds# expect to learn how to build the kernel reading this file. 12 1da177e4SLinus Torvalds 13 a436bb7bSMasahiro Yamada# o Do not use make's built-in rules and variables 14 d384e35aSLinus Nilsson# (this increases performance and avoids hard-to-debug behaviour); 15 a436bb7bSMasahiro Yamada# o Look for make include files relative to root of kernel src 16 a436bb7bSMasahiro YamadaMAKEFLAGS += -rR --include-dir=$(CURDIR) 17 1da177e4SLinus Torvalds 18 c051346bSH. Peter Anvin# Avoid funny character set dependencies 19 06b5dc64SH. Peter Anvinunexport LC_ALL 20 c051346bSH. Peter AnvinLC_COLLATE=C 21 c051346bSH. Peter AnvinLC_NUMERIC=C 22 07105202SMichal Marekexport LC_COLLATE LC_NUMERIC 23 c051346bSH. Peter Anvin 24 ab7474eaSBorislav Petkov# Avoid interference with shell env settings 25 ab7474eaSBorislav Petkovunexport GREP_OPTIONS 26 ab7474eaSBorislav Petkov 27 1da177e4SLinus Torvalds# We are using a recursive build, so we need to do a little thinking 28 1da177e4SLinus Torvalds# to get the ordering right. 29 1da177e4SLinus Torvalds# 30 1da177e4SLinus Torvalds# Most importantly: sub-Makefiles should only ever modify files in 31 1da177e4SLinus Torvalds# their own directory. If in some directory we have a dependency on 32 1da177e4SLinus Torvalds# a file in another dir (which doesn't happen often, but it's often 33 1da177e4SLinus Torvalds# unavoidable when linking the built-in.o targets which finally 34 1da177e4SLinus Torvalds# turn into vmlinux), we will call a sub make in that other dir, and 35 1da177e4SLinus Torvalds# after that we are sure that everything which is in that other dir 36 1da177e4SLinus Torvalds# is now up to date. 37 1da177e4SLinus Torvalds# 38 1da177e4SLinus Torvalds# The only cases where we need to modify files which have global 39 1da177e4SLinus Torvalds# effects are thus separated out and done before the recursive 40 1da177e4SLinus Torvalds# descending is started. They are now explicitly listed as the 41 1da177e4SLinus Torvalds# prepare rule. 42 1da177e4SLinus Torvalds 43 066b7ed9SMichal Marek# Beautify output 44 066b7ed9SMichal Marek# --------------------------------------------------------------------------- 45 066b7ed9SMichal Marek# 46 066b7ed9SMichal Marek# Normally, we echo the whole command before executing it. By making 47 066b7ed9SMichal Marek# that echo $($(quiet)$(cmd)), we now have the possibility to set 48 066b7ed9SMichal Marek# $(quiet) to choose other forms of output instead, e.g. 49 066b7ed9SMichal Marek# 50 066b7ed9SMichal Marek# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 51 066b7ed9SMichal Marek# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 52 066b7ed9SMichal Marek# 53 066b7ed9SMichal Marek# If $(quiet) is empty, the whole command will be printed. 54 066b7ed9SMichal Marek# If it is set to "quiet_", only the short version will be printed. 55 066b7ed9SMichal Marek# If it is set to "silent_", nothing will be printed at all, since 56 066b7ed9SMichal Marek# the variable $(silent_cmd_cc_o_c) doesn't exist. 57 066b7ed9SMichal Marek# 58 066b7ed9SMichal Marek# A simple variant is to prefix commands with $(Q) - that's useful 59 066b7ed9SMichal Marek# for commands that shall be hidden in non-verbose mode. 60 066b7ed9SMichal Marek# 61 066b7ed9SMichal Marek# $(Q)ln $@ :< 62 066b7ed9SMichal Marek# 63 066b7ed9SMichal Marek# If KBUILD_VERBOSE equals 0 then the above command will be hidden. 64 066b7ed9SMichal Marek# If KBUILD_VERBOSE equals 1 then the above command is displayed. 65 066b7ed9SMichal Marek# 66 1da177e4SLinus Torvalds# To put more focus on warnings, be less verbose as default 67 1da177e4SLinus Torvalds# Use 'make V=1' to see the full commands 68 1da177e4SLinus Torvalds 69 1da177e4SLinus Torvaldsifeq ("$(origin V)", "command line") 70 1da177e4SLinus Torvalds KBUILD_VERBOSE = $(V) 71 1da177e4SLinus Torvaldsendif 72 1da177e4SLinus Torvaldsifndef KBUILD_VERBOSE 73 1da177e4SLinus Torvalds KBUILD_VERBOSE = 0 74 1da177e4SLinus Torvaldsendif 75 1da177e4SLinus Torvalds 76 066b7ed9SMichal Marekifeq ($(KBUILD_VERBOSE),1) 77 066b7ed9SMichal Marek quiet = 78 066b7ed9SMichal Marek Q = 79 066b7ed9SMichal Marekelse 80 066b7ed9SMichal Marek quiet=quiet_ 81 066b7ed9SMichal Marek Q = @ 82 066b7ed9SMichal Marekendif 83 066b7ed9SMichal Marek 84 066b7ed9SMichal Marek# If the user is running make -s (silent mode), suppress echoing of 85 066b7ed9SMichal Marek# commands 86 066b7ed9SMichal Marek 87 066b7ed9SMichal Marekifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4 88 066b7ed9SMichal Marekifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),) 89 066b7ed9SMichal Marek quiet=silent_ 90 066b7ed9SMichal Marekendif 91 066b7ed9SMichal Marekelse # make-3.8x 92 066b7ed9SMichal Marekifneq ($(filter s% -s%,$(MAKEFLAGS)),) 93 066b7ed9SMichal Marek quiet=silent_ 94 066b7ed9SMichal Marekendif 95 066b7ed9SMichal Marekendif 96 066b7ed9SMichal Marek 97 066b7ed9SMichal Marekexport quiet Q KBUILD_VERBOSE 98 066b7ed9SMichal Marek 99 1da177e4SLinus Torvalds# kbuild supports saving output files in a separate directory. 100 1da177e4SLinus Torvalds# To locate output files in a separate directory two syntaxes are supported. 101 1da177e4SLinus Torvalds# In both cases the working directory must be the root of the kernel src. 102 1da177e4SLinus Torvalds# 1) O= 103 1da177e4SLinus Torvalds# Use "make O=dir/to/store/output/files/" 104 1da177e4SLinus Torvalds# 105 1da177e4SLinus Torvalds# 2) Set KBUILD_OUTPUT 106 1da177e4SLinus Torvalds# Set the environment variable KBUILD_OUTPUT to point to the directory 107 1da177e4SLinus Torvalds# where the output files shall be placed. 108 1da177e4SLinus Torvalds# export KBUILD_OUTPUT=dir/to/store/output/files/ 109 1da177e4SLinus Torvalds# make 110 1da177e4SLinus Torvalds# 111 1da177e4SLinus Torvalds# The O= assignment takes precedence over the KBUILD_OUTPUT environment 112 1da177e4SLinus Torvalds# variable. 113 1da177e4SLinus Torvalds 114 1da177e4SLinus Torvalds# KBUILD_SRC is set on invocation of make in OBJ directory 115 1da177e4SLinus Torvalds# KBUILD_SRC is not intended to be used by the regular user (for now) 116 1da177e4SLinus Torvaldsifeq ($(KBUILD_SRC),) 117 1da177e4SLinus Torvalds 118 1da177e4SLinus Torvalds# OK, Make called in directory where kernel src resides 119 1da177e4SLinus Torvalds# Do we want to locate output files in a separate directory? 120 1da177e4SLinus Torvaldsifeq ("$(origin O)", "command line") 121 1da177e4SLinus Torvalds KBUILD_OUTPUT := $(O) 122 1da177e4SLinus Torvaldsendif 123 1da177e4SLinus Torvalds 124 1da177e4SLinus Torvalds# That's our default target when none is given on the command line 125 4f193362SPaul SmithPHONY := _all 126 1da177e4SLinus Torvalds_all: 127 1da177e4SLinus Torvalds 128 1cacc9abSSam Ravnborg# Cancel implicit rules on top Makefile 129 1cacc9abSSam Ravnborg$(CURDIR)/Makefile Makefile: ; 130 1cacc9abSSam Ravnborg 131 1da177e4SLinus Torvaldsifneq ($(KBUILD_OUTPUT),) 132 1da177e4SLinus Torvalds# Invoke a second make in the output directory, passing relevant variables 133 1da177e4SLinus Torvalds# check that the output directory actually exists 134 1da177e4SLinus Torvaldssaved-output := $(KBUILD_OUTPUT) 135 1c9e70a5SMasahiro YamadaKBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ 136 1c9e70a5SMasahiro Yamada && /bin/pwd) 137 1da177e4SLinus Torvalds$(if $(KBUILD_OUTPUT),, \ 138 1c9e70a5SMasahiro Yamada $(error failed to create output directory "$(saved-output)")) 139 1da177e4SLinus Torvalds 140 0b35786dSMilton MillerPHONY += $(MAKECMDGOALS) sub-make 141 0b35786dSMilton Miller 142 1cacc9abSSam Ravnborg$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 143 16f89098SCharles Keepax @: 144 0b35786dSMilton Miller 145 2e8d696bSMasahiro Yamadasub-make: 146 745a2543SMasahiro Yamada $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 147 aa55c8e2SMasahiro Yamada -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 148 1da177e4SLinus Torvalds 149 1da177e4SLinus Torvalds# Leave processing to above invocation of make 150 1da177e4SLinus Torvaldsskip-makefile := 1 151 1da177e4SLinus Torvaldsendif # ifneq ($(KBUILD_OUTPUT),) 152 1da177e4SLinus Torvaldsendif # ifeq ($(KBUILD_SRC),) 153 1da177e4SLinus Torvalds 154 1da177e4SLinus Torvalds# We process the rest of the Makefile if this is the final invocation of make 155 1da177e4SLinus Torvaldsifeq ($(skip-makefile),) 156 1da177e4SLinus Torvalds 157 7ff52571SMasahiro Yamada# Do not print "Entering directory ...", 158 7ff52571SMasahiro Yamada# but we want to display it when entering to the output directory 159 7ff52571SMasahiro Yamada# so that IDEs/editors are able to understand relative filenames. 160 7ff52571SMasahiro YamadaMAKEFLAGS += --no-print-directory 161 7ff52571SMasahiro Yamada 162 aa55c8e2SMasahiro Yamada# Call a source code checker (by default, "sparse") as part of the 163 aa55c8e2SMasahiro Yamada# C compilation. 164 aa55c8e2SMasahiro Yamada# 165 aa55c8e2SMasahiro Yamada# Use 'make C=1' to enable checking of only re-compiled files. 166 aa55c8e2SMasahiro Yamada# Use 'make C=2' to enable checking of *all* source files, regardless 167 aa55c8e2SMasahiro Yamada# of whether they are re-compiled or not. 168 aa55c8e2SMasahiro Yamada# 169 aa55c8e2SMasahiro Yamada# See the file "Documentation/sparse.txt" for more details, including 170 aa55c8e2SMasahiro Yamada# where to get the "sparse" utility. 171 aa55c8e2SMasahiro Yamada 172 aa55c8e2SMasahiro Yamadaifeq ("$(origin C)", "command line") 173 aa55c8e2SMasahiro Yamada KBUILD_CHECKSRC = $(C) 174 aa55c8e2SMasahiro Yamadaendif 175 aa55c8e2SMasahiro Yamadaifndef KBUILD_CHECKSRC 176 aa55c8e2SMasahiro Yamada KBUILD_CHECKSRC = 0 177 aa55c8e2SMasahiro Yamadaendif 178 aa55c8e2SMasahiro Yamada 179 aa55c8e2SMasahiro Yamada# Use make M=dir to specify directory of external module to build 180 aa55c8e2SMasahiro Yamada# Old syntax make ... SUBDIRS=$PWD is still supported 181 aa55c8e2SMasahiro Yamada# Setting the environment variable KBUILD_EXTMOD take precedence 182 aa55c8e2SMasahiro Yamadaifdef SUBDIRS 183 aa55c8e2SMasahiro Yamada KBUILD_EXTMOD ?= $(SUBDIRS) 184 aa55c8e2SMasahiro Yamadaendif 185 aa55c8e2SMasahiro Yamada 186 aa55c8e2SMasahiro Yamadaifeq ("$(origin M)", "command line") 187 aa55c8e2SMasahiro Yamada KBUILD_EXTMOD := $(M) 188 aa55c8e2SMasahiro Yamadaendif 189 aa55c8e2SMasahiro Yamada 190 1da177e4SLinus Torvalds# If building an external module we do not care about the all: rule 191 1da177e4SLinus Torvalds# but instead _all depend on modules 192 4f193362SPaul SmithPHONY += all 193 1da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 194 1da177e4SLinus Torvalds_all: all 195 1da177e4SLinus Torvaldselse 196 1da177e4SLinus Torvalds_all: modules 197 1da177e4SLinus Torvaldsendif 198 1da177e4SLinus Torvalds 199 9da0763bSMichal Marekifeq ($(KBUILD_SRC),) 200 9da0763bSMichal Marek # building in the source tree 201 9da0763bSMichal Marek srctree := . 202 9da0763bSMichal Marekelse 203 9da0763bSMichal Marek ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) 204 9da0763bSMichal Marek # building in a subdirectory of the source tree 205 9da0763bSMichal Marek srctree := .. 206 9da0763bSMichal Marek else 207 9da0763bSMichal Marek srctree := $(KBUILD_SRC) 208 9da0763bSMichal Marek endif 209 9da0763bSMichal Marekendif 210 7e1c0477SMichal Marekobjtree := . 211 1da177e4SLinus Torvaldssrc := $(srctree) 212 1da177e4SLinus Torvaldsobj := $(objtree) 213 1da177e4SLinus Torvalds 214 0f558c33SMattia DongiliVPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 215 1da177e4SLinus Torvalds 216 11294235SAmerigo Wangexport srctree objtree VPATH 217 1da177e4SLinus Torvalds 218 1da177e4SLinus Torvalds# SUBARCH tells the usermode build what the underlying arch is. That is set 219 1da177e4SLinus Torvalds# first, and if a usermode build is happening, the "ARCH=um" on the command 220 1da177e4SLinus Torvalds# line overrides the setting of ARCH below. If a native build is happening, 221 1da177e4SLinus Torvalds# then ARCH is assigned, getting whatever value it gets normally, and 222 1da177e4SLinus Torvalds# SUBARCH is subsequently ignored. 223 1da177e4SLinus Torvalds 224 ffee0de4SDavid WoodhouseSUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ 225 ffee0de4SDavid Woodhouse -e s/sun4u/sparc64/ \ 226 1da177e4SLinus Torvalds -e s/arm.*/arm/ -e s/sa110/arm/ \ 227 39990b5eSLinus Torvalds -e s/s390x/s390/ -e s/parisc64/parisc/ \ 228 236b1957SPaul Mundt -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 229 f1b99392SWill Deacon -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) 230 1da177e4SLinus Torvalds 231 1da177e4SLinus Torvalds# Cross compiling and selecting different set of gcc/bin-utils 232 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 233 1da177e4SLinus Torvalds# 234 1da177e4SLinus Torvalds# When performing cross compilation for other architectures ARCH shall be set 235 1da177e4SLinus Torvalds# to the target architecture. (See arch/* for the possibilities). 236 1da177e4SLinus Torvalds# ARCH can be set during invocation of make: 237 1da177e4SLinus Torvalds# make ARCH=ia64 238 1da177e4SLinus Torvalds# Another way is to have ARCH set in the environment. 239 1da177e4SLinus Torvalds# The default ARCH is the host where make is executed. 240 1da177e4SLinus Torvalds 241 1da177e4SLinus Torvalds# CROSS_COMPILE specify the prefix used for all executables used 242 1da177e4SLinus Torvalds# during compilation. Only gcc and related bin-utils executables 243 1da177e4SLinus Torvalds# are prefixed with $(CROSS_COMPILE). 244 1da177e4SLinus Torvalds# CROSS_COMPILE can be set on the command line 245 1da177e4SLinus Torvalds# make CROSS_COMPILE=ia64-linux- 246 1da177e4SLinus Torvalds# Alternatively CROSS_COMPILE can be set in the environment. 247 84336466SRoland McGrath# A third alternative is to store a setting in .config so that plain 248 84336466SRoland McGrath# "make" in the configured kernel build directory always uses that. 249 1da177e4SLinus Torvalds# Default value for CROSS_COMPILE is not to prefix executables 250 1da177e4SLinus Torvalds# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 251 2331d1a6SSam RavnborgARCH ?= $(SUBARCH) 252 84336466SRoland McGrathCROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) 253 1da177e4SLinus Torvalds 254 1da177e4SLinus Torvalds# Architecture as present in compile.h 255 1da177e4SLinus TorvaldsUTS_MACHINE := $(ARCH) 256 6752ed90SThomas GleixnerSRCARCH := $(ARCH) 257 1da177e4SLinus Torvalds 258 d746d647SSam Ravnborg# Additional ARCH settings for x86 259 d746d647SSam Ravnborgifeq ($(ARCH),i386) 260 d746d647SSam Ravnborg SRCARCH := x86 261 d746d647SSam Ravnborgendif 262 d746d647SSam Ravnborgifeq ($(ARCH),x86_64) 263 d746d647SSam Ravnborg SRCARCH := x86 264 d746d647SSam Ravnborgendif 265 74b469f2SSam Ravnborg 266 5e538790SSam Ravnborg# Additional ARCH settings for sparc 267 e69f58c0SNamhyung Kimifeq ($(ARCH),sparc32) 268 e69f58c0SNamhyung Kim SRCARCH := sparc 269 e69f58c0SNamhyung Kimendif 270 a439fe51SSam Ravnborgifeq ($(ARCH),sparc64) 271 5e538790SSam Ravnborg SRCARCH := sparc 272 a439fe51SSam Ravnborgendif 273 2fb9b1bdSSam Ravnborg 274 3cc000b5SPaul Mundt# Additional ARCH settings for sh 275 3cc000b5SPaul Mundtifeq ($(ARCH),sh64) 276 3cc000b5SPaul Mundt SRCARCH := sh 277 3cc000b5SPaul Mundtendif 278 3cc000b5SPaul Mundt 279 18aecc2bSChris Metcalf# Additional ARCH settings for tile 280 6738d321SChris Metcalfifeq ($(ARCH),tilepro) 281 6738d321SChris Metcalf SRCARCH := tile 282 6738d321SChris Metcalfendif 283 18aecc2bSChris Metcalfifeq ($(ARCH),tilegx) 284 18aecc2bSChris Metcalf SRCARCH := tile 285 18aecc2bSChris Metcalfendif 286 18aecc2bSChris Metcalf 287 5e538790SSam Ravnborg# Where to locate arch specific headers 288 5e538790SSam Ravnborghdr-arch := $(SRCARCH) 289 5e538790SSam Ravnborg 290 14cdd3c4SRoman ZippelKCONFIG_CONFIG ?= .config 291 41263fc6SBen Gardinerexport KCONFIG_CONFIG 292 14cdd3c4SRoman Zippel 293 1da177e4SLinus Torvalds# SHELL used by kbuild 294 1da177e4SLinus TorvaldsCONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 295 1da177e4SLinus Torvalds else if [ -x /bin/bash ]; then echo /bin/bash; \ 296 1da177e4SLinus Torvalds else echo sh; fi ; fi) 297 1da177e4SLinus Torvalds 298 1da177e4SLinus TorvaldsHOSTCC = gcc 299 1da177e4SLinus TorvaldsHOSTCXX = g++ 300 51b97e35SKirill A. ShutemovHOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 301 1da177e4SLinus TorvaldsHOSTCXXFLAGS = -O2 302 1da177e4SLinus Torvalds 303 61163efaSBehan Websterifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1) 304 61163efaSBehan WebsterHOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \ 305 61163efaSBehan Webster -Wno-missing-field-initializers -fno-delete-null-pointer-checks 306 61163efaSBehan Websterendif 307 61163efaSBehan Webster 308 1da177e4SLinus Torvalds# Decide whether to build built-in, modular, or both. 309 1da177e4SLinus Torvalds# Normally, just do built-in. 310 1da177e4SLinus Torvalds 311 1da177e4SLinus TorvaldsKBUILD_MODULES := 312 1da177e4SLinus TorvaldsKBUILD_BUILTIN := 1 313 1da177e4SLinus Torvalds 314 1da177e4SLinus Torvalds# If we have only "make modules", don't compile built-in objects. 315 1da177e4SLinus Torvalds# When we're building modules with modversions, we need to consider 316 1da177e4SLinus Torvalds# the built-in objects during the descend as well, in order to 317 1da177e4SLinus Torvalds# make sure the checksums are up to date before we record them. 318 1da177e4SLinus Torvalds 319 1da177e4SLinus Torvaldsifeq ($(MAKECMDGOALS),modules) 320 1da177e4SLinus Torvalds KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 321 1da177e4SLinus Torvaldsendif 322 1da177e4SLinus Torvalds 323 1da177e4SLinus Torvalds# If we have "make <whatever> modules", compile modules 324 1da177e4SLinus Torvalds# in addition to whatever we do anyway. 325 1da177e4SLinus Torvalds# Just "make" or "make all" shall build modules as well 326 1da177e4SLinus Torvalds 327 1da177e4SLinus Torvaldsifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 328 1da177e4SLinus Torvalds KBUILD_MODULES := 1 329 1da177e4SLinus Torvaldsendif 330 1da177e4SLinus Torvalds 331 1da177e4SLinus Torvaldsifeq ($(MAKECMDGOALS),) 332 1da177e4SLinus Torvalds KBUILD_MODULES := 1 333 1da177e4SLinus Torvaldsendif 334 1da177e4SLinus Torvalds 335 e579d351SSam Ravnborgexport KBUILD_MODULES KBUILD_BUILTIN 336 1da177e4SLinus Torvaldsexport KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 337 1da177e4SLinus Torvalds 338 1cacc9abSSam Ravnborg# We need some generic definitions (do not try to remake the file). 339 a436bb7bSMasahiro Yamadascripts/Kbuild.include: ; 340 a436bb7bSMasahiro Yamadainclude scripts/Kbuild.include 341 8ec4b4ffSSam Ravnborg 342 1da177e4SLinus Torvalds# Make variables (CC, etc...) 343 1da177e4SLinus TorvaldsAS = $(CROSS_COMPILE)as 344 1da177e4SLinus TorvaldsLD = $(CROSS_COMPILE)ld 345 1da177e4SLinus TorvaldsCC = $(CROSS_COMPILE)gcc 346 1da177e4SLinus TorvaldsCPP = $(CC) -E 347 1da177e4SLinus TorvaldsAR = $(CROSS_COMPILE)ar 348 1da177e4SLinus TorvaldsNM = $(CROSS_COMPILE)nm 349 1da177e4SLinus TorvaldsSTRIP = $(CROSS_COMPILE)strip 350 1da177e4SLinus TorvaldsOBJCOPY = $(CROSS_COMPILE)objcopy 351 1da177e4SLinus TorvaldsOBJDUMP = $(CROSS_COMPILE)objdump 352 1da177e4SLinus TorvaldsAWK = awk 353 1da177e4SLinus TorvaldsGENKSYMS = scripts/genksyms/genksyms 354 caa27b66SSam RavnborgINSTALLKERNEL := installkernel 355 1da177e4SLinus TorvaldsDEPMOD = /sbin/depmod 356 1da177e4SLinus TorvaldsPERL = perl 357 011bf125SMasahiro YamadaPYTHON = python 358 1da177e4SLinus TorvaldsCHECK = sparse 359 1da177e4SLinus Torvalds 360 80a7d1d9SHannes EderCHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 361 80a7d1d9SHannes Eder -Wbitwise -Wno-return-void $(CF) 362 6588169dSSam RavnborgCFLAGS_MODULE = 363 6588169dSSam RavnborgAFLAGS_MODULE = 364 6588169dSSam RavnborgLDFLAGS_MODULE = 365 1da177e4SLinus TorvaldsCFLAGS_KERNEL = 366 1da177e4SLinus TorvaldsAFLAGS_KERNEL = 367 2521f2c2SPeter OberparleiterCFLAGS_GCOV = -fprofile-arcs -ftest-coverage 368 5c9a8750SDmitry VyukovCFLAGS_KCOV = -fsanitize-coverage=trace-pc 369 1da177e4SLinus Torvalds 370 1da177e4SLinus Torvalds 371 abbf1590SDavid Howells# Use USERINCLUDE when you must reference the UAPI directories only. 372 abbf1590SDavid HowellsUSERINCLUDE := \ 373 abbf1590SDavid Howells -I$(srctree)/arch/$(hdr-arch)/include/uapi \ 374 abbf1590SDavid Howells -Iarch/$(hdr-arch)/include/generated/uapi \ 375 abbf1590SDavid Howells -I$(srctree)/include/uapi \ 376 abbf1590SDavid Howells -Iinclude/generated/uapi \ 377 abbf1590SDavid Howells -include $(srctree)/include/linux/kconfig.h 378 abbf1590SDavid Howells 379 1da177e4SLinus Torvalds# Use LINUXINCLUDE when you must reference the include/ directory. 380 1da177e4SLinus Torvalds# Needed to be compatible with the O= option 381 abbf1590SDavid HowellsLINUXINCLUDE := \ 382 abbf1590SDavid Howells -I$(srctree)/arch/$(hdr-arch)/include \ 383 90ac086bSMichal Marek -Iarch/$(hdr-arch)/include/generated/uapi \ 384 abbf1590SDavid Howells -Iarch/$(hdr-arch)/include/generated \ 385 96f13045SSam Ravnborg $(if $(KBUILD_SRC), -I$(srctree)/include) \ 386 abbf1590SDavid Howells -Iinclude \ 387 abbf1590SDavid Howells $(USERINCLUDE) 388 1da177e4SLinus Torvalds 389 d8672b40SSam RavnborgKBUILD_CPPFLAGS := -D__KERNEL__ 390 1da177e4SLinus Torvalds 391 a0f97e06SSam RavnborgKBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 392 94bed2a9SDave Jones -fno-strict-aliasing -fno-common \ 393 a8735821SFloris Kraak -Werror-implicit-function-declaration \ 394 51b97e35SKirill A. Shutemov -Wno-format-security \ 395 51b97e35SKirill A. Shutemov -std=gnu89 396 a1c48bb1SGeert Uytterhoeven 397 80c00ba9SSam RavnborgKBUILD_AFLAGS_KERNEL := 398 80c00ba9SSam RavnborgKBUILD_CFLAGS_KERNEL := 399 222d394dSSam RavnborgKBUILD_AFLAGS := -D__ASSEMBLY__ 400 6588169dSSam RavnborgKBUILD_AFLAGS_MODULE := -DMODULE 401 6588169dSSam RavnborgKBUILD_CFLAGS_MODULE := -DMODULE 402 6588169dSSam RavnborgKBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 403 1da177e4SLinus Torvalds 404 f1d28fb0SRoman Zippel# Read KERNELRELEASE from include/config/kernel.release (if it exists) 405 f1d28fb0SRoman ZippelKERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 406 cacd54efSMichal MarekKERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 407 cb58455cSSam Ravnborg 408 070b98bfSSam Ravnborgexport VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 409 80ef88d6SSam Ravnborgexport ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 410 caa27b66SSam Ravnborgexport CPP AR NM STRIP OBJCOPY OBJDUMP 411 011bf125SMasahiro Yamadaexport MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE 412 070b98bfSSam Ravnborgexport HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 413 1da177e4SLinus Torvalds 414 06c5040cSSam Ravnborgexport KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 415 5c9a8750SDmitry Vyukovexport KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KCOV CFLAGS_KASAN CFLAGS_UBSAN 416 222d394dSSam Ravnborgexport KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 417 6588169dSSam Ravnborgexport KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 418 80c00ba9SSam Ravnborgexport KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 419 40df759eSMichal Marekexport KBUILD_ARFLAGS 420 1da177e4SLinus Torvalds 421 1da177e4SLinus Torvalds# When compiling out-of-tree modules, put MODVERDIR in the module 422 1da177e4SLinus Torvalds# tree rather than in the kernel tree. The kernel tree might 423 1da177e4SLinus Torvalds# even be read-only. 424 1da177e4SLinus Torvaldsexport MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 425 1da177e4SLinus Torvalds 426 1da177e4SLinus Torvalds# Files to ignore in find ... statements 427 1da177e4SLinus Torvalds 428 ae63b2d7SPrarit Bhargavaexport RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 429 ae63b2d7SPrarit Bhargava -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 430 ae63b2d7SPrarit Bhargava -prune -o 431 450c6076SJesper Juhlexport RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 432 450c6076SJesper Juhl --exclude CVS --exclude .pc --exclude .hg --exclude .git 433 1da177e4SLinus Torvalds 434 1da177e4SLinus Torvalds# =========================================================================== 435 1da177e4SLinus Torvalds# Rules shared between *config targets and build targets 436 1da177e4SLinus Torvalds 437 1da177e4SLinus Torvalds# Basic helpers built in scripts/ 438 4f193362SPaul SmithPHONY += scripts_basic 439 1da177e4SLinus Torvaldsscripts_basic: 440 1da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/basic 441 638adb05SSteven Rostedt $(Q)rm -f .tmp_quiet_recordmcount 442 1da177e4SLinus Torvalds 443 cd05e6bdSJan Beulich# To avoid any implicit rule to kick in, define an empty command. 444 cd05e6bdSJan Beulichscripts/basic/%: scripts_basic ; 445 cd05e6bdSJan Beulich 446 4f193362SPaul SmithPHONY += outputmakefile 447 fd5f0cd6SJan Beulich# outputmakefile generates a Makefile in the output directory, if using a 448 fd5f0cd6SJan Beulich# separate output directory. This allows convenient use of make in the 449 fd5f0cd6SJan Beulich# output directory. 450 1da177e4SLinus Torvaldsoutputmakefile: 451 fd5f0cd6SJan Beulichifneq ($(KBUILD_SRC),) 452 92979997SAndi Kleen $(Q)ln -fsn $(srctree) source 453 fd5f0cd6SJan Beulich $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 454 fd5f0cd6SJan Beulich $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 455 fd5f0cd6SJan Beulichendif 456 1da177e4SLinus Torvalds 457 d8ecc5cdSSam Ravnborg# Support for using generic headers in asm-generic 458 d8ecc5cdSSam RavnborgPHONY += asm-generic 459 d8ecc5cdSSam Ravnborgasm-generic: 460 d8ecc5cdSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 461 3c5994c8SCatalin Marinas src=asm obj=arch/$(SRCARCH)/include/generated/asm 462 3c5994c8SCatalin Marinas $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 463 3c5994c8SCatalin Marinas src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm 464 d8ecc5cdSSam Ravnborg 465 1da177e4SLinus Torvalds# To make sure we do not include .config for any of the *config targets 466 1da177e4SLinus Torvalds# catch them early, and hand them over to scripts/kconfig/Makefile 467 1da177e4SLinus Torvalds# It is allowed to specify more targets when calling make, including 468 1da177e4SLinus Torvalds# mixing *config targets and build targets. 469 1da177e4SLinus Torvalds# For example 'make oldconfig all'. 470 1da177e4SLinus Torvalds# Detect when mixed targets is specified, and make a second invocation 471 1da177e4SLinus Torvalds# of make so .config is not included in this case either (for *config). 472 1da177e4SLinus Torvalds 473 10b63956SDavid Howellsversion_h := include/generated/uapi/linux/version.h 474 223c24a7SMichal Marekold_version_h := include/linux/version.h 475 d183e6f5SDavid Howells 476 3eb3c740SRoman Zippelno-dot-config-targets := clean mrproper distclean \ 477 fbae4d58SMichal Marek cscope gtags TAGS tags help% %docs check% coccicheck \ 478 d183e6f5SDavid Howells $(version_h) headers_% archheaders archscripts \ 479 4aed2fd8SLinus Torvalds kernelversion %src-pkg 480 1da177e4SLinus Torvalds 481 1da177e4SLinus Torvaldsconfig-targets := 0 482 1da177e4SLinus Torvaldsmixed-targets := 0 483 1da177e4SLinus Torvaldsdot-config := 1 484 1da177e4SLinus Torvalds 485 1da177e4SLinus Torvaldsifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 486 1da177e4SLinus Torvalds ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 487 1da177e4SLinus Torvalds dot-config := 0 488 1da177e4SLinus Torvalds endif 489 1da177e4SLinus Torvaldsendif 490 1da177e4SLinus Torvalds 491 1da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 492 1da177e4SLinus Torvalds ifneq ($(filter config %config,$(MAKECMDGOALS)),) 493 1da177e4SLinus Torvalds config-targets := 1 494 d0d38cd9SMasahiro Yamada ifneq ($(words $(MAKECMDGOALS)),1) 495 1da177e4SLinus Torvalds mixed-targets := 1 496 1da177e4SLinus Torvalds endif 497 1da177e4SLinus Torvalds endif 498 1da177e4SLinus Torvaldsendif 499 a85a41edSMichal Marek# install and module_install need also be processed one by one 500 a85a41edSMichal Marekifneq ($(filter install,$(MAKECMDGOALS)),) 501 a85a41edSMichal Marek ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 502 a85a41edSMichal Marek mixed-targets := 1 503 a85a41edSMichal Marek endif 504 a85a41edSMichal Marekendif 505 1da177e4SLinus Torvalds 506 1da177e4SLinus Torvaldsifeq ($(mixed-targets),1) 507 1da177e4SLinus Torvalds# =========================================================================== 508 1da177e4SLinus Torvalds# We're called with mixed targets (*config and build targets). 509 1da177e4SLinus Torvalds# Handle them one by one. 510 1da177e4SLinus Torvalds 511 9319f453SMasahiro YamadaPHONY += $(MAKECMDGOALS) __build_one_by_one 512 9319f453SMasahiro Yamada 513 9319f453SMasahiro Yamada$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 514 9319f453SMasahiro Yamada @: 515 9319f453SMasahiro Yamada 516 9319f453SMasahiro Yamada__build_one_by_one: 517 9319f453SMasahiro Yamada $(Q)set -e; \ 518 9319f453SMasahiro Yamada for i in $(MAKECMDGOALS); do \ 519 9319f453SMasahiro Yamada $(MAKE) -f $(srctree)/Makefile $$i; \ 520 9319f453SMasahiro Yamada done 521 1da177e4SLinus Torvalds 522 1da177e4SLinus Torvaldselse 523 1da177e4SLinus Torvaldsifeq ($(config-targets),1) 524 1da177e4SLinus Torvalds# =========================================================================== 525 1da177e4SLinus Torvalds# *config targets only - make sure prerequisites are updated, and descend 526 1da177e4SLinus Torvalds# in scripts/kconfig to make the *config target 527 1da177e4SLinus Torvalds 528 1da177e4SLinus Torvalds# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 529 1da177e4SLinus Torvalds# KBUILD_DEFCONFIG may point out an alternative default configuration 530 1da177e4SLinus Torvalds# used for 'make defconfig' 531 a436bb7bSMasahiro Yamadainclude arch/$(SRCARCH)/Makefile 532 61bee204SAl Viroexport KBUILD_DEFCONFIG KBUILD_KCONFIG 533 1da177e4SLinus Torvalds 534 31110ebbSSam Ravnborgconfig: scripts_basic outputmakefile FORCE 535 31110ebbSSam Ravnborg $(Q)$(MAKE) $(build)=scripts/kconfig $@ 536 31110ebbSSam Ravnborg 537 31110ebbSSam Ravnborg%config: scripts_basic outputmakefile FORCE 538 1da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/kconfig $@ 539 1da177e4SLinus Torvalds 540 1da177e4SLinus Torvaldselse 541 1da177e4SLinus Torvalds# =========================================================================== 542 1da177e4SLinus Torvalds# Build targets only - this includes vmlinux, arch specific targets, clean 543 1da177e4SLinus Torvalds# targets and others. In general all targets except *config targets. 544 1da177e4SLinus Torvalds 545 1da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 546 1da177e4SLinus Torvalds# Additional helpers built in scripts/ 547 1da177e4SLinus Torvalds# Carefully list dependencies so we do not try to build scripts twice 548 070b98bfSSam Ravnborg# in parallel 549 4f193362SPaul SmithPHONY += scripts 550 a54292f5SAndreas Schwabscripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ 551 a54292f5SAndreas Schwab asm-generic 552 1da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=$(@) 553 1da177e4SLinus Torvalds 554 1da177e4SLinus Torvalds# Objects we will link into vmlinux / subdirs we need to visit 555 1da177e4SLinus Torvaldsinit-y := init/ 556 4d2acfbfSDavid Woodhousedrivers-y := drivers/ sound/ firmware/ 557 1da177e4SLinus Torvaldsnet-y := net/ 558 1da177e4SLinus Torvaldslibs-y := lib/ 559 1da177e4SLinus Torvaldscore-y := usr/ 560 37d9fe47SFeng Wuvirt-y := virt/ 561 1da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 562 1da177e4SLinus Torvalds 563 1da177e4SLinus Torvaldsifeq ($(dot-config),1) 564 9ee4e336SSam Ravnborg# Read in config 565 9ee4e336SSam Ravnborg-include include/config/auto.conf 566 1da177e4SLinus Torvalds 567 9ee4e336SSam Ravnborgifeq ($(KBUILD_EXTMOD),) 568 1da177e4SLinus Torvalds# Read in dependencies to all Kconfig* files, make sure to run 569 1da177e4SLinus Torvalds# oldconfig if changes are detected. 570 c955ccafSRoman Zippel-include include/config/auto.conf.cmd 571 1da177e4SLinus Torvalds 572 1da177e4SLinus Torvalds# To avoid any implicit rule to kick in, define an empty command 573 14cdd3c4SRoman Zippel$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 574 1da177e4SLinus Torvalds 575 c955ccafSRoman Zippel# If .config is newer than include/config/auto.conf, someone tinkered 576 752625cfSSam Ravnborg# with it and forgot to run make oldconfig. 577 070b98bfSSam Ravnborg# if auto.conf.cmd is missing then we are probably in a cleaned tree so 578 752625cfSSam Ravnborg# we execute the config step to be sure to catch updated Kconfig files 579 bc081dd6SMichal Marekinclude/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 580 1da177e4SLinus Torvalds $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 581 1da177e4SLinus Torvaldselse 582 264a2683SSam Ravnborg# external modules needs include/generated/autoconf.h and include/config/auto.conf 583 9ee4e336SSam Ravnborg# but do not care if they are up-to-date. Use auto.conf to trigger the test 584 9ee4e336SSam RavnborgPHONY += include/config/auto.conf 585 9ee4e336SSam Ravnborg 586 9ee4e336SSam Ravnborginclude/config/auto.conf: 587 264a2683SSam Ravnborg $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 588 5369f550SMichal Marek echo >&2; \ 589 5369f550SMichal Marek echo >&2 " ERROR: Kernel configuration is invalid."; \ 590 5369f550SMichal Marek echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 591 5369f550SMichal Marek echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 592 5369f550SMichal Marek echo >&2 ; \ 593 9ee4e336SSam Ravnborg /bin/false) 594 9ee4e336SSam Ravnborg 595 9ee4e336SSam Ravnborgendif # KBUILD_EXTMOD 596 c955ccafSRoman Zippel 597 1da177e4SLinus Torvaldselse 598 1da177e4SLinus Torvalds# Dummy target needed, because used as prerequisite 599 c955ccafSRoman Zippelinclude/config/auto.conf: ; 600 9ee4e336SSam Ravnborgendif # $(dot-config) 601 1da177e4SLinus Torvalds 602 1da177e4SLinus Torvalds# The all: target is the default when no target is given on the 603 1da177e4SLinus Torvalds# command line. 604 1da177e4SLinus Torvalds# This allow a user to issue only 'make' to build a kernel including modules 605 c8447161SMichal Marek# Defaults to vmlinux, but the arch makefile usually adds further targets 606 1da177e4SLinus Torvaldsall: vmlinux 607 1da177e4SLinus Torvalds 608 6dd3f13eSMichal Marek# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default 609 6dd3f13eSMichal Marek# values of the respective KBUILD_* variables 610 6dd3f13eSMichal MarekARCH_CPPFLAGS := 611 6dd3f13eSMichal MarekARCH_AFLAGS := 612 6dd3f13eSMichal MarekARCH_CFLAGS := 613 a436bb7bSMasahiro Yamadainclude arch/$(SRCARCH)/Makefile 614 a1c48bb1SGeert Uytterhoeven 615 a1c48bb1SGeert UytterhoevenKBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) 616 a1c48bb1SGeert Uytterhoeven 617 1da177e4SLinus Torvaldsifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 618 e74fc973SArnd BergmannKBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) 619 1da177e4SLinus Torvaldselse 620 a0f97e06SSam RavnborgKBUILD_CFLAGS += -O2 621 1da177e4SLinus Torvaldsendif 622 1da177e4SLinus Torvalds 623 69102311SJiri Kosina# Tell gcc to never replace conditional load with a non-conditional one 624 69102311SJiri KosinaKBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 625 69102311SJiri Kosina 626 1873e870SAndi Kleenifdef CONFIG_READABLE_ASM 627 1873e870SAndi Kleen# Disable optimizations that make assembler listings hard to read. 628 1873e870SAndi Kleen# reorder blocks reorders the control in the function 629 1873e870SAndi Kleen# ipa clone creates specialized cloned functions 630 1873e870SAndi Kleen# partial inlining inlines only parts of functions 631 1873e870SAndi KleenKBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ 632 1873e870SAndi Kleen $(call cc-option,-fno-ipa-cp-clone,) \ 633 1873e870SAndi Kleen $(call cc-option,-fno-partial-inlining) 634 1873e870SAndi Kleenendif 635 1873e870SAndi Kleen 636 08f67461SMike Frysingerifneq ($(CONFIG_FRAME_WARN),0) 637 35bb5b1eSAndi KleenKBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 638 35bb5b1eSAndi Kleenendif 639 35bb5b1eSAndi Kleen 640 19952a92SKees Cook# Handle stack protector mode. 641 1332429bSKees Cook# 642 1332429bSKees Cook# Since kbuild can potentially perform two passes (first with the old 643 1332429bSKees Cook# .config values and then with updated .config values), we cannot error out 644 1332429bSKees Cook# if a desired compiler option is unsupported. If we were to error, kbuild 645 1332429bSKees Cook# could never get to the second pass and actually notice that we changed 646 1332429bSKees Cook# the option to something that was supported. 647 1332429bSKees Cook# 648 1332429bSKees Cook# Additionally, we don't want to fallback and/or silently change which compiler 649 1332429bSKees Cook# flags will be used, since that leads to producing kernels with different 650 1332429bSKees Cook# security feature characteristics depending on the compiler used. ("But I 651 1332429bSKees Cook# selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!") 652 1332429bSKees Cook# 653 1332429bSKees Cook# The middle ground is to warn here so that the failed option is obvious, but 654 1332429bSKees Cook# to let the build fail with bad compiler flags so that we can't produce a 655 1332429bSKees Cook# kernel when there is a CONFIG and compiler mismatch. 656 1332429bSKees Cook# 657 8779657dSKees Cookifdef CONFIG_CC_STACKPROTECTOR_REGULAR 658 19952a92SKees Cook stackp-flag := -fstack-protector 659 19952a92SKees Cook ifeq ($(call cc-option, $(stackp-flag)),) 660 6c15b327SJan Beulich $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \ 661 27b2a49aSFathi Boudra -fstack-protector not supported by compiler) 662 5d707e9cSTejun Heo endif 663 6c15b327SJan Beulichelse 664 6c15b327SJan Beulichifdef CONFIG_CC_STACKPROTECTOR_STRONG 665 8779657dSKees Cook stackp-flag := -fstack-protector-strong 666 8779657dSKees Cook ifeq ($(call cc-option, $(stackp-flag)),) 667 8779657dSKees Cook $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \ 668 8779657dSKees Cook -fstack-protector-strong not supported by compiler) 669 8779657dSKees Cook endif 670 19952a92SKees Cookelse 671 19952a92SKees Cook # Force off for distro compilers that enable stack protector by default. 672 19952a92SKees Cook stackp-flag := $(call cc-option, -fno-stack-protector) 673 19952a92SKees Cookendif 674 6c15b327SJan Beulichendif 675 19952a92SKees CookKBUILD_CFLAGS += $(stackp-flag) 676 e06b8b98SSam Ravnborg 677 5c9a8750SDmitry Vyukovifdef CONFIG_KCOV 678 5c9a8750SDmitry Vyukov ifeq ($(call cc-option, $(CFLAGS_KCOV)),) 679 5c9a8750SDmitry Vyukov $(warning Cannot use CONFIG_KCOV: \ 680 5c9a8750SDmitry Vyukov -fsanitize-coverage=trace-pc is not supported by compiler) 681 5c9a8750SDmitry Vyukov CFLAGS_KCOV = 682 5c9a8750SDmitry Vyukov endif 683 5c9a8750SDmitry Vyukovendif 684 5c9a8750SDmitry Vyukov 685 5631d9c4SMichal Marekifeq ($(cc-name),clang) 686 61163efaSBehan WebsterKBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) 687 61163efaSBehan WebsterKBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,) 688 61163efaSBehan WebsterKBUILD_CFLAGS += $(call cc-disable-warning, unused-variable) 689 61163efaSBehan WebsterKBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) 690 61163efaSBehan WebsterKBUILD_CFLAGS += $(call cc-disable-warning, gnu) 691 61163efaSBehan Webster# Quiet clang warning: comparison of unsigned expression < 0 is always false 692 61163efaSBehan WebsterKBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) 693 61163efaSBehan Webster# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the 694 61163efaSBehan Webster# source of a reference will be _MergedGlobals and not on of the whitelisted names. 695 61163efaSBehan Webster# See modpost pattern 2 696 61163efaSBehan WebsterKBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) 697 26ea6bb1SBehan WebsterKBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) 698 61163efaSBehan Websterelse 699 61163efaSBehan Webster 700 af0e5d56SDave Jones# This warning generated too much noise in a regular build. 701 af0e5d56SDave Jones# Use make W=1 to enable this warning (see scripts/Makefile.build) 702 8417da6fSMichal MarekKBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 703 61163efaSBehan Websterendif 704 af0e5d56SDave Jones 705 1da177e4SLinus Torvaldsifdef CONFIG_FRAME_POINTER 706 a0f97e06SSam RavnborgKBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 707 1da177e4SLinus Torvaldselse 708 7e9501fdSRabin Vincent# Some targets (ARM with Thumb2, for example), can't be built with frame 709 7e9501fdSRabin Vincent# pointers. For those, we don't have FUNCTION_TRACER automatically 710 7e9501fdSRabin Vincent# select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 711 7e9501fdSRabin Vincent# incompatible with -fomit-frame-pointer with current GCC, so we don't use 712 7e9501fdSRabin Vincent# -fomit-frame-pointer with FUNCTION_TRACER. 713 7e9501fdSRabin Vincentifndef CONFIG_FUNCTION_TRACER 714 a0f97e06SSam RavnborgKBUILD_CFLAGS += -fomit-frame-pointer 715 1da177e4SLinus Torvaldsendif 716 7e9501fdSRabin Vincentendif 717 1da177e4SLinus Torvalds 718 2062afb4SLinus TorvaldsKBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) 719 2062afb4SLinus Torvalds 720 1da177e4SLinus Torvaldsifdef CONFIG_DEBUG_INFO 721 866ced95SAndi Kleenifdef CONFIG_DEBUG_INFO_SPLIT 722 866ced95SAndi KleenKBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) 723 866ced95SAndi Kleenelse 724 a0f97e06SSam RavnborgKBUILD_CFLAGS += -g 725 866ced95SAndi Kleenendif 726 2288328cSBehan WebsterKBUILD_AFLAGS += -Wa,-gdwarf-2 727 1da177e4SLinus Torvaldsendif 728 bfaf2dd3SAndi Kleenifdef CONFIG_DEBUG_INFO_DWARF4 729 bfaf2dd3SAndi KleenKBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) 730 bfaf2dd3SAndi Kleenendif 731 1da177e4SLinus Torvalds 732 d6f4ceb7SAndi Kleenifdef CONFIG_DEBUG_INFO_REDUCED 733 e82c4bb8SAndi KleenKBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 734 e82c4bb8SAndi Kleen $(call cc-option,-fno-var-tracking) 735 d6f4ceb7SAndi Kleenendif 736 d6f4ceb7SAndi Kleen 737 606576ceSSteven Rostedtifdef CONFIG_FUNCTION_TRACER 738 c0a80c0cSHeiko Carstensifndef CC_FLAGS_FTRACE 739 c0a80c0cSHeiko CarstensCC_FLAGS_FTRACE := -pg 740 c0a80c0cSHeiko Carstensendif 741 c0a80c0cSHeiko Carstensexport CC_FLAGS_FTRACE 742 a2546faeSSteven Rostedtifdef CONFIG_HAVE_FENTRY 743 a2546faeSSteven RostedtCC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) 744 a2546faeSSteven Rostedtendif 745 c0a80c0cSHeiko CarstensKBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY) 746 a2546faeSSteven RostedtKBUILD_AFLAGS += $(CC_USING_FENTRY) 747 72441cb1SSteven Rostedtifdef CONFIG_DYNAMIC_FTRACE 748 cf4db259SSteven Rostedt ifdef CONFIG_HAVE_C_RECORDMCOUNT 749 72441cb1SSteven Rostedt BUILD_C_RECORDMCOUNT := y 750 72441cb1SSteven Rostedt export BUILD_C_RECORDMCOUNT 751 72441cb1SSteven Rostedt endif 752 72441cb1SSteven Rostedtendif 753 16444a8aSArnaldo Carvalho de Meloendif 754 16444a8aSArnaldo Carvalho de Melo 755 91341d4bSSam Ravnborg# We trigger additional mismatches with less inlining 756 91341d4bSSam Ravnborgifdef CONFIG_DEBUG_SECTION_MISMATCH 757 91341d4bSSam RavnborgKBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 758 91341d4bSSam Ravnborgendif 759 91341d4bSSam Ravnborg 760 e8e69931SSam Ravnborg# arch Makefile may override CC so keep this after arch Makefile is included 761 e8f5bdb0SRik van RielNOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 762 e8e69931SSam RavnborgCHECKFLAGS += $(NOSTDINC_FLAGS) 763 e8e69931SSam Ravnborg 764 1da177e4SLinus Torvalds# warn about C99 declaration after statement 765 a0f97e06SSam RavnborgKBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 766 1da177e4SLinus Torvalds 767 070b98bfSSam Ravnborg# disable pointer signed / unsigned warnings in gcc 4.0 768 8417da6fSMichal MarekKBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 769 1da177e4SLinus Torvalds 770 fe8d0a41SKirill Smelkov# disable invalid "can't wrap" optimizations for signed / pointers 771 a137802eSLinus TorvaldsKBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 772 d0115552SLinus Torvalds 773 8f7f5c9fSAndi Kleen# conserve stack if available 774 8f7f5c9fSAndi KleenKBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 775 8f7f5c9fSAndi Kleen 776 80970472SSergei Trofimovich# disallow errors like 'EXPORT_GPL(foo);' with missing header 777 80970472SSergei TrofimovichKBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) 778 80970472SSergei Trofimovich 779 80970472SSergei Trofimovich# require functions to have arguments in prototypes, not empty 'int foo()' 780 80970472SSergei TrofimovichKBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) 781 80970472SSergei Trofimovich 782 fe7c36c7SJosh Triplett# Prohibit date/time macros, which would make the build non-deterministic 783 fe7c36c7SJosh TriplettKBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 784 fe7c36c7SJosh Triplett 785 ea8daa7bSDaniel Wagner# enforce correct pointer usage 786 ea8daa7bSDaniel WagnerKBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) 787 ea8daa7bSDaniel Wagner 788 40df759eSMichal Marek# use the deterministic mode of AR if available 789 40df759eSMichal MarekKBUILD_ARFLAGS := $(call ar-option,D) 790 40df759eSMichal Marek 791 bf5438fcSJason Baron# check for 'asm goto' 792 bf5438fcSJason Baronifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) 793 bf5438fcSJason Baron KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO 794 c0ccf6f9SAnton Blanchard KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO 795 bf5438fcSJason Baronendif 796 bf5438fcSJason Baron 797 a436bb7bSMasahiro Yamadainclude scripts/Makefile.kasan 798 a436bb7bSMasahiro Yamadainclude scripts/Makefile.extrawarn 799 c6d30853SAndrey Ryabinininclude scripts/Makefile.ubsan 800 a86fe353SMasahiro Yamada 801 61754c18SMichal Marek# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the 802 61754c18SMichal Marek# last assignments 803 61754c18SMichal MarekKBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) 804 61754c18SMichal MarekKBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) 805 61754c18SMichal MarekKBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) 806 52bcc330SSam Ravnborg 807 18991197SRoland McGrath# Use --build-id when available. 808 18991197SRoland McGrathLDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 809 f86fd306SSam Ravnborg $(call cc-ldoption, -Wl$(comma)--build-id,)) 810 6588169dSSam RavnborgKBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 811 18991197SRoland McGrathLDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 812 18991197SRoland McGrath 813 5d7d18f5SDavid Howellsifeq ($(CONFIG_STRIP_ASM_SYMS),y) 814 d79a2719SAndi KleenLDFLAGS_vmlinux += $(call ld-option, -X,) 815 5d7d18f5SDavid Howellsendif 816 5d7d18f5SDavid Howells 817 1da177e4SLinus Torvalds# Default kernel image to build when no specific target is given. 818 1da177e4SLinus Torvalds# KBUILD_IMAGE may be overruled on the command line or 819 1da177e4SLinus Torvalds# set in the environment 820 1da177e4SLinus Torvalds# Also any assignments in arch/$(ARCH)/Makefile take precedence over 821 1da177e4SLinus Torvalds# this default value 822 1da177e4SLinus Torvaldsexport KBUILD_IMAGE ?= vmlinux 823 1da177e4SLinus Torvalds 824 1da177e4SLinus Torvalds# 825 1da177e4SLinus Torvalds# INSTALL_PATH specifies where to place the updated kernel and system map 826 1da177e4SLinus Torvalds# images. Default is /boot, but you can set it to other values 827 1da177e4SLinus Torvaldsexport INSTALL_PATH ?= /boot 828 1da177e4SLinus Torvalds 829 1da177e4SLinus Torvalds# 830 f4d4ffc0SJason Cooper# INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 831 f4d4ffc0SJason Cooper# Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 832 f4d4ffc0SJason Cooper# an argument if needed. Otherwise it defaults to the kernel install path 833 f4d4ffc0SJason Cooper# 834 f4d4ffc0SJason Cooperexport INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 835 f4d4ffc0SJason Cooper 836 f4d4ffc0SJason Cooper# 837 1da177e4SLinus Torvalds# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 838 1da177e4SLinus Torvalds# relocations required by build roots. This is not defined in the 839 070b98bfSSam Ravnborg# makefile but the argument can be passed to make if needed. 840 1da177e4SLinus Torvalds# 841 1da177e4SLinus Torvalds 842 df9df036SSam RavnborgMODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 843 1da177e4SLinus Torvaldsexport MODLIB 844 1da177e4SLinus Torvalds 845 ac031f26STheodore Ts'o# 846 2ea03891SSam Ravnborg# INSTALL_MOD_STRIP, if defined, will cause modules to be 847 2ea03891SSam Ravnborg# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 848 2ea03891SSam Ravnborg# the default option --strip-debug will be used. Otherwise, 849 177b241dSGilles Espinasse# INSTALL_MOD_STRIP value will be used as the options to the strip command. 850 2ea03891SSam Ravnborg 851 ac031f26STheodore Ts'oifdef INSTALL_MOD_STRIP 852 ac031f26STheodore Ts'oifeq ($(INSTALL_MOD_STRIP),1) 853 2ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) --strip-debug 854 ac031f26STheodore Ts'oelse 855 2ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 856 ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP=1 857 ac031f26STheodore Ts'oelse 858 2ea03891SSam Ravnborgmod_strip_cmd = true 859 ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP 860 ac031f26STheodore Ts'oexport mod_strip_cmd 861 ac031f26STheodore Ts'o 862 beb50df3SBertrand Jacquin# CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed 863 beb50df3SBertrand Jacquin# after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP 864 beb50df3SBertrand Jacquin# or CONFIG_MODULE_COMPRESS_XZ. 865 beb50df3SBertrand Jacquin 866 beb50df3SBertrand Jacquinmod_compress_cmd = true 867 beb50df3SBertrand Jacquinifdef CONFIG_MODULE_COMPRESS 868 beb50df3SBertrand Jacquin ifdef CONFIG_MODULE_COMPRESS_GZIP 869 3d1450d5SJason A. Donenfeld mod_compress_cmd = gzip -n -f 870 beb50df3SBertrand Jacquin endif # CONFIG_MODULE_COMPRESS_GZIP 871 beb50df3SBertrand Jacquin ifdef CONFIG_MODULE_COMPRESS_XZ 872 3d1450d5SJason A. Donenfeld mod_compress_cmd = xz -f 873 beb50df3SBertrand Jacquin endif # CONFIG_MODULE_COMPRESS_XZ 874 beb50df3SBertrand Jacquinendif # CONFIG_MODULE_COMPRESS 875 beb50df3SBertrand Jacquinexport mod_compress_cmd 876 beb50df3SBertrand Jacquin 877 1bf49dd4SP J P# Select initial ramdisk compression format, default is gzip(1). 878 1bf49dd4SP J P# This shall be used by the dracut(8) tool while creating an initramfs image. 879 1bf49dd4SP J P# 880 7ac18156SJan BeulichINITRD_COMPRESS-y := gzip 881 7ac18156SJan BeulichINITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 882 7ac18156SJan BeulichINITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma 883 7ac18156SJan BeulichINITRD_COMPRESS-$(CONFIG_RD_XZ) := xz 884 7ac18156SJan BeulichINITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo 885 7ac18156SJan BeulichINITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 886 b7000adeSLinus Torvalds# do not export INITRD_COMPRESS, since we didn't actually 887 b7000adeSLinus Torvalds# choose a sane default compression above. 888 b7000adeSLinus Torvalds# export INITRD_COMPRESS := $(INITRD_COMPRESS-y) 889 1da177e4SLinus Torvalds 890 d9d8d7edSMichal Marekifdef CONFIG_MODULE_SIG_ALL 891 3ee550f1SDavid Woodhouse$(eval $(call config_filename,MODULE_SIG_KEY)) 892 3ee550f1SDavid Woodhouse 893 3ee550f1SDavid Woodhousemod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 894 e2a666d5SRusty Russellelse 895 e2a666d5SRusty Russellmod_sign_cmd = true 896 e2a666d5SRusty Russellendif 897 e2a666d5SRusty Russellexport mod_sign_cmd 898 e2a666d5SRusty Russell 899 e2a666d5SRusty Russell 900 1da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 901 cfc411e7SDavid Howellscore-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ 902 1da177e4SLinus Torvalds 903 1da177e4SLinus Torvaldsvmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 904 1da177e4SLinus Torvalds $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 905 37d9fe47SFeng Wu $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) 906 1da177e4SLinus Torvalds 907 1da177e4SLinus Torvaldsvmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 908 37d9fe47SFeng Wu $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-)))) 909 1da177e4SLinus Torvalds 910 1da177e4SLinus Torvaldsinit-y := $(patsubst %/, %/built-in.o, $(init-y)) 911 1da177e4SLinus Torvaldscore-y := $(patsubst %/, %/built-in.o, $(core-y)) 912 1da177e4SLinus Torvaldsdrivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 913 1da177e4SLinus Torvaldsnet-y := $(patsubst %/, %/built-in.o, $(net-y)) 914 1da177e4SLinus Torvaldslibs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 915 1da177e4SLinus Torvaldslibs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 916 1da177e4SLinus Torvaldslibs-y := $(libs-y1) $(libs-y2) 917 37d9fe47SFeng Wuvirt-y := $(patsubst %/, %/built-in.o, $(virt-y)) 918 1da177e4SLinus Torvalds 919 1f2bfbd0SSam Ravnborg# Externally visible symbols (used by link-vmlinux.sh) 920 95698570SSam Ravnborgexport KBUILD_VMLINUX_INIT := $(head-y) $(init-y) 921 37d9fe47SFeng Wuexport KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) $(virt-y) 922 95698570SSam Ravnborgexport KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 923 1f2bfbd0SSam Ravnborgexport LDFLAGS_vmlinux 924 6615d6c3SMichal Marek# used by scripts/pacmage/Makefile 925 37d9fe47SFeng Wuexport KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools) 926 1da177e4SLinus Torvalds 927 1f2bfbd0SSam Ravnborgvmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) 928 1da177e4SLinus Torvalds 929 1f2bfbd0SSam Ravnborg# Final link of vmlinux 930 1f2bfbd0SSam Ravnborg cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) 931 1f2bfbd0SSam Ravnborgquiet_cmd_link-vmlinux = LINK $@ 932 1da177e4SLinus Torvalds 933 1f2bfbd0SSam Ravnborg# Include targets which we want to 934 1f2bfbd0SSam Ravnborg# execute if the rest of the kernel build went well. 935 1f2bfbd0SSam Ravnborgvmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE 936 23121ca2SNicolas Pitreifdef CONFIG_TRIM_UNUSED_KSYMS 937 *ba79d401SNicolas Ferre $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ 938 23121ca2SNicolas Pitre "$(MAKE) KBUILD_MODULES=1 -f $(srctree)/Makefile autoksyms_recursive" 939 23121ca2SNicolas Pitreendif 940 0f836e5fSDavid Woodhouseifdef CONFIG_HEADERS_CHECK 941 0e7af8d0SDavid Woodhouse $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 942 0f836e5fSDavid Woodhouseendif 943 3794f3e8SRandy Dunlapifdef CONFIG_BUILD_DOCSRC 944 3794f3e8SRandy Dunlap $(Q)$(MAKE) $(build)=Documentation 945 3794f3e8SRandy Dunlapendif 946 3ee7b3faSJan Kiszkaifdef CONFIG_GDB_SCRIPTS 947 3ee7b3faSJan Kiszka $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py 948 3ee7b3faSJan Kiszkaendif 949 1f2bfbd0SSam Ravnborg +$(call if_changed,link-vmlinux) 950 741f98feSSam Ravnborg 951 23121ca2SNicolas Pitreautoksyms_recursive: $(vmlinux-deps) 952 *ba79d401SNicolas Ferre $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ 953 23121ca2SNicolas Pitre "$(MAKE) KBUILD_MODULES=1 -f $(srctree)/Makefile autoksyms_recursive" 954 23121ca2SNicolas PitrePHONY += autoksyms_recursive 955 23121ca2SNicolas Pitre 956 23121ca2SNicolas Pitre# standalone target for easier testing 957 23121ca2SNicolas Pitreinclude/generated/autoksyms.h: FORCE 958 *ba79d401SNicolas Ferre $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh true 959 23121ca2SNicolas Pitre 960 dd92478aSNicolas Pitre# Build samples along the rest of the kernel 961 dd92478aSNicolas Pitreifdef CONFIG_SAMPLES 962 dd92478aSNicolas Pitrevmlinux-dirs += samples 963 dd92478aSNicolas Pitreendif 964 dd92478aSNicolas Pitre 965 1da177e4SLinus Torvalds# The actual objects are generated when descending, 966 1da177e4SLinus Torvalds# make sure no implicit rule kicks in 967 1f2bfbd0SSam Ravnborg$(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 968 1da177e4SLinus Torvalds 969 1da177e4SLinus Torvalds# Handle descending into subdirectories listed in $(vmlinux-dirs) 970 1da177e4SLinus Torvalds# Preset locale variables to speed up the build process. Limit locale 971 1da177e4SLinus Torvalds# tweaks to this spot to avoid wrong language settings when running 972 1da177e4SLinus Torvalds# make menuconfig etc. 973 1da177e4SLinus Torvalds# Error messages still appears in the original language 974 1da177e4SLinus Torvalds 975 4f193362SPaul SmithPHONY += $(vmlinux-dirs) 976 5bb78269SSam Ravnborg$(vmlinux-dirs): prepare scripts 977 1da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=$@ 978 1da177e4SLinus Torvalds 979 0d0e7718SMichal Marekdefine filechk_kernel.release 980 0d0e7718SMichal Marek echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 981 0d0e7718SMichal Marekendef 982 0d0e7718SMichal Marek 983 83a35e36SGeert Uytterhoeven# Store (new) KERNELRELEASE string in include/config/kernel.release 984 f1d28fb0SRoman Zippelinclude/config/kernel.release: include/config/auto.conf FORCE 985 0d0e7718SMichal Marek $(call filechk,kernel.release) 986 cb58455cSSam Ravnborg 987 cb58455cSSam Ravnborg 988 1da177e4SLinus Torvalds# Things we need to do before we recursively start building the kernel 989 5bb78269SSam Ravnborg# or the modules are listed in "prepare". 990 5bb78269SSam Ravnborg# A multi level approach is used. prepareN is processed before prepareN-1. 991 5bb78269SSam Ravnborg# archprepare is used in arch Makefiles and when processed asm symlink, 992 5bb78269SSam Ravnborg# version.h and scripts_basic is processed / created. 993 1da177e4SLinus Torvalds 994 5bb78269SSam Ravnborg# Listed in dependency order 995 4f193362SPaul SmithPHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 996 5bb78269SSam Ravnborg 997 86feeaa8SSam Ravnborg# prepare3 is used to check if we are building in a separate output directory, 998 1da177e4SLinus Torvalds# and if so do: 999 1da177e4SLinus Torvalds# 1) Check that make has not been executed in the kernel src $(srctree) 1000 f1d28fb0SRoman Zippelprepare3: include/config/kernel.release 1001 1da177e4SLinus Torvaldsifneq ($(KBUILD_SRC),) 1002 fd54f502SMike Frysinger @$(kecho) ' Using $(srctree) as source for kernel' 1003 c955ccafSRoman Zippel $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 1004 5369f550SMichal Marek echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ 1005 5369f550SMichal Marek echo >&2 " in the '$(srctree)' directory.";\ 1006 1da177e4SLinus Torvalds /bin/false; \ 1007 1da177e4SLinus Torvalds fi; 1008 1da177e4SLinus Torvaldsendif 1009 1da177e4SLinus Torvalds 1010 86feeaa8SSam Ravnborg# prepare2 creates a makefile if using a separate output directory 1011 d8ecc5cdSSam Ravnborgprepare2: prepare3 outputmakefile asm-generic 1012 1da177e4SLinus Torvalds 1013 d183e6f5SDavid Howellsprepare1: prepare2 $(version_h) include/generated/utsrelease.h \ 1014 f7f16b77SSam Ravnborg include/config/auto.conf 1015 7bb9d092SSam Ravnborg $(cmd_crmodverdir) 1016 f2355416SNicolas Pitre $(Q)test -e include/generated/autoksyms.h || \ 1017 f2355416SNicolas Pitre touch include/generated/autoksyms.h 1018 1da177e4SLinus Torvalds 1019 6520fe55SH. Peter Anvinarchprepare: archheaders archscripts prepare1 scripts_basic 1020 5bb78269SSam Ravnborg 1021 2e8d696bSMasahiro Yamadaprepare0: archprepare 1022 8d36a623SSam Ravnborg $(Q)$(MAKE) $(build)=. 1023 86feeaa8SSam Ravnborg 1024 1da177e4SLinus Torvalds# All the preparing.. 1025 b9ab5ebbSJosh Poimboeufprepare: prepare0 prepare-objtool 1026 b9ab5ebbSJosh Poimboeuf 1027 3b27a0c8SJosh Poimboeufifdef CONFIG_STACK_VALIDATION 1028 3b27a0c8SJosh Poimboeuf has_libelf := $(shell echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf - &> /dev/null && echo 1 || echo 0) 1029 3b27a0c8SJosh Poimboeuf ifeq ($(has_libelf),1) 1030 3b27a0c8SJosh Poimboeuf objtool_target := tools/objtool FORCE 1031 3b27a0c8SJosh Poimboeuf else 1032 3b27a0c8SJosh Poimboeuf $(warning "Cannot use CONFIG_STACK_VALIDATION, please install libelf-dev or elfutils-libelf-devel") 1033 3b27a0c8SJosh Poimboeuf SKIP_STACK_VALIDATION := 1 1034 3b27a0c8SJosh Poimboeuf export SKIP_STACK_VALIDATION 1035 3b27a0c8SJosh Poimboeuf endif 1036 3b27a0c8SJosh Poimboeufendif 1037 3b27a0c8SJosh Poimboeuf 1038 b9ab5ebbSJosh PoimboeufPHONY += prepare-objtool 1039 3b27a0c8SJosh Poimboeufprepare-objtool: $(objtool_target) 1040 1da177e4SLinus Torvalds 1041 1da177e4SLinus Torvalds# Generate some files 1042 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1043 1da177e4SLinus Torvalds 1044 1da177e4SLinus Torvalds# KERNELRELEASE can change from a few different places, meaning version.h 1045 1da177e4SLinus Torvalds# needs to be updated, so this check is forced on all builds 1046 1da177e4SLinus Torvalds 1047 1da177e4SLinus Torvaldsuts_len := 64 1048 63104eecSSam Ravnborgdefine filechk_utsrelease.h 1049 1da177e4SLinus Torvalds if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1050 1da177e4SLinus Torvalds echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1051 1da177e4SLinus Torvalds exit 1; \ 1052 1da177e4SLinus Torvalds fi; \ 1053 63104eecSSam Ravnborg (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1054 1da177e4SLinus Torvaldsendef 1055 1da177e4SLinus Torvalds 1056 63104eecSSam Ravnborgdefine filechk_version.h 1057 63104eecSSam Ravnborg (echo \#define LINUX_VERSION_CODE $(shell \ 1058 78d3bb44SMichal Marek expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1059 63104eecSSam Ravnborg echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1060 63104eecSSam Ravnborgendef 1061 63104eecSSam Ravnborg 1062 d183e6f5SDavid Howells$(version_h): $(srctree)/Makefile FORCE 1063 1da177e4SLinus Torvalds $(call filechk,version.h) 1064 223c24a7SMichal Marek $(Q)rm -f $(old_version_h) 1065 1da177e4SLinus Torvalds 1066 273b281fSSam Ravnborginclude/generated/utsrelease.h: include/config/kernel.release FORCE 1067 63104eecSSam Ravnborg $(call filechk,utsrelease.h) 1068 63104eecSSam Ravnborg 1069 179efcb4SVegard NossumPHONY += headerdep 1070 179efcb4SVegard Nossumheaderdep: 1071 9663d989SPeter Foley $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1072 9663d989SPeter Foley $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1073 179efcb4SVegard Nossum 1074 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1075 88ecf814SDavid Woodhouse# Firmware install 1076 88ecf814SDavid WoodhouseINSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware 1077 88ecf814SDavid Woodhouseexport INSTALL_FW_PATH 1078 88ecf814SDavid Woodhouse 1079 88ecf814SDavid WoodhousePHONY += firmware_install 1080 2e8d696bSMasahiro Yamadafirmware_install: 1081 88ecf814SDavid Woodhouse @mkdir -p $(objtree)/firmware 1082 88ecf814SDavid Woodhouse $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 1083 88ecf814SDavid Woodhouse 1084 88ecf814SDavid Woodhouse# --------------------------------------------------------------------------- 1085 8d730cfbSDavid Woodhouse# Kernel headers 1086 8d730cfbSDavid Woodhouse 1087 e6883b18SSam Ravnborg#Default location for installed headers 1088 e6883b18SSam Ravnborgexport INSTALL_HDR_PATH = $(objtree)/usr 1089 e6883b18SSam Ravnborg 1090 2fb9b1bdSSam Ravnborg# If we do an all arch process set dst to asm-$(hdr-arch) 1091 2fb9b1bdSSam Ravnborghdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1092 e6883b18SSam Ravnborg 1093 052ad274SH. Peter AnvinPHONY += archheaders 1094 052ad274SH. Peter Anvinarchheaders: 1095 052ad274SH. Peter Anvin 1096 6520fe55SH. Peter AnvinPHONY += archscripts 1097 6520fe55SH. Peter Anvinarchscripts: 1098 6520fe55SH. Peter Anvin 1099 e6883b18SSam RavnborgPHONY += __headers 1100 2e8d696bSMasahiro Yamada__headers: $(version_h) scripts_basic asm-generic archheaders archscripts 1101 e1b702cfSMike Waychison $(Q)$(MAKE) $(build)=scripts build_unifdef 1102 6d716275SDavid Woodhouse 1103 6d716275SDavid WoodhousePHONY += headers_install_all 1104 2fb9b1bdSSam Ravnborgheaders_install_all: 1105 2fb9b1bdSSam Ravnborg $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1106 6d716275SDavid Woodhouse 1107 8d730cfbSDavid WoodhousePHONY += headers_install 1108 e6883b18SSam Ravnborgheaders_install: __headers 1109 10b63956SDavid Howells $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ 1110 2fb9b1bdSSam Ravnborg $(error Headers not exportable for the $(SRCARCH) architecture)) 1111 10b63956SDavid Howells $(Q)$(MAKE) $(hdr-inst)=include/uapi 1112 10b63956SDavid Howells $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) 1113 8d730cfbSDavid Woodhouse 1114 1f85712eSMike FrysingerPHONY += headers_check_all 1115 1f85712eSMike Frysingerheaders_check_all: headers_install_all 1116 2fb9b1bdSSam Ravnborg $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1117 1f85712eSMike Frysinger 1118 68475359SDavid WoodhousePHONY += headers_check 1119 68475359SDavid Woodhouseheaders_check: headers_install 1120 10b63956SDavid Howells $(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 1121 10b63956SDavid Howells $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 1122 68475359SDavid Woodhouse 1123 8d730cfbSDavid Woodhouse# --------------------------------------------------------------------------- 1124 5a5da78bSShuah Khan# Kernel selftest 1125 5a5da78bSShuah Khan 1126 5a5da78bSShuah KhanPHONY += kselftest 1127 5a5da78bSShuah Khankselftest: 1128 5a5da78bSShuah Khan $(Q)$(MAKE) -C tools/testing/selftests run_tests 1129 5a5da78bSShuah Khan 1130 dcb825a9SWang Longkselftest-clean: 1131 dcb825a9SWang Long $(Q)$(MAKE) -C tools/testing/selftests clean 1132 dcb825a9SWang Long 1133 3d6dee7aSBamvor Jian ZhangPHONY += kselftest-merge 1134 3d6dee7aSBamvor Jian Zhangkselftest-merge: 1135 3d6dee7aSBamvor Jian Zhang $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 1136 3d6dee7aSBamvor Jian Zhang $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ 1137 3d6dee7aSBamvor Jian Zhang -m $(objtree)/.config \ 1138 3d6dee7aSBamvor Jian Zhang $(srctree)/tools/testing/selftests/*/config 1139 3d6dee7aSBamvor Jian Zhang +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 1140 3d6dee7aSBamvor Jian Zhang 1141 5a5da78bSShuah Khan# --------------------------------------------------------------------------- 1142 1da177e4SLinus Torvalds# Modules 1143 1da177e4SLinus Torvalds 1144 1da177e4SLinus Torvaldsifdef CONFIG_MODULES 1145 1da177e4SLinus Torvalds 1146 1da177e4SLinus Torvalds# By default, build modules as well 1147 1da177e4SLinus Torvalds 1148 73d1393eSMichal Marekall: modules 1149 1da177e4SLinus Torvalds 1150 1da177e4SLinus Torvalds# Build modules 1151 551559e1STejun Heo# 1152 551559e1STejun Heo# A module can be listed more than once in obj-m resulting in 1153 551559e1STejun Heo# duplicate lines in modules.order files. Those are removed 1154 551559e1STejun Heo# using awk while concatenating to the final file. 1155 1da177e4SLinus Torvalds 1156 4f193362SPaul SmithPHONY += modules 1157 2da30e70SMichal Marekmodules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin 1158 551559e1STejun Heo $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1159 fd54f502SMike Frysinger @$(kecho) ' Building modules, stage 2.'; 1160 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1161 44463f7dSDavid Woodhouse $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1162 1da177e4SLinus Torvalds 1163 a6c36632SMichal Marekmodules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1164 a6c36632SMichal Marek $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1165 a6c36632SMichal Marek 1166 73d1393eSMichal Marek%/modules.builtin: include/config/auto.conf 1167 a6c36632SMichal Marek $(Q)$(MAKE) $(modbuiltin)=$* 1168 a6c36632SMichal Marek 1169 1da177e4SLinus Torvalds 1170 1da177e4SLinus Torvalds# Target to prepare building external modules 1171 4f193362SPaul SmithPHONY += modules_prepare 1172 5bb78269SSam Ravnborgmodules_prepare: prepare scripts 1173 1da177e4SLinus Torvalds 1174 1da177e4SLinus Torvalds# Target to install modules 1175 4f193362SPaul SmithPHONY += modules_install 1176 1da177e4SLinus Torvaldsmodules_install: _modinst_ _modinst_post 1177 1da177e4SLinus Torvalds 1178 4f193362SPaul SmithPHONY += _modinst_ 1179 2da30e70SMichal Marek_modinst_: 1180 1da177e4SLinus Torvalds @rm -rf $(MODLIB)/kernel 1181 1da177e4SLinus Torvalds @rm -f $(MODLIB)/source 1182 1da177e4SLinus Torvalds @mkdir -p $(MODLIB)/kernel 1183 890676c6SMichal Marek @ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source 1184 1da177e4SLinus Torvalds @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1185 1da177e4SLinus Torvalds rm -f $(MODLIB)/build ; \ 1186 7e1c0477SMichal Marek ln -s $(CURDIR) $(MODLIB)/build ; \ 1187 1da177e4SLinus Torvalds fi 1188 551559e1STejun Heo @cp -f $(objtree)/modules.order $(MODLIB)/ 1189 bc081dd6SMichal Marek @cp -f $(objtree)/modules.builtin $(MODLIB)/ 1190 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1191 1da177e4SLinus Torvalds 1192 50a8ec31SSam Ravnborg# This depmod is only for convenience to give the initial 1193 1da177e4SLinus Torvalds# boot a modules.dep even before / is mounted read-write. However the 1194 1da177e4SLinus Torvalds# boot script depmod is the master version. 1195 4f193362SPaul SmithPHONY += _modinst_post 1196 6d128e1eSLinus Torvalds_modinst_post: _modinst_ 1197 88ecf814SDavid Woodhouse $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst 1198 50a8ec31SSam Ravnborg $(call cmd,depmod) 1199 1da177e4SLinus Torvalds 1200 d890f510SJosh Boyerifeq ($(CONFIG_MODULE_SIG), y) 1201 d890f510SJosh BoyerPHONY += modules_sign 1202 d890f510SJosh Boyermodules_sign: 1203 d890f510SJosh Boyer $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1204 d890f510SJosh Boyerendif 1205 d890f510SJosh Boyer 1206 1da177e4SLinus Torvaldselse # CONFIG_MODULES 1207 1da177e4SLinus Torvalds 1208 1da177e4SLinus Torvalds# Modules not configured 1209 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1210 1da177e4SLinus Torvalds 1211 612e47ceSMasahiro YamadaPHONY += modules modules_install 1212 612e47ceSMasahiro Yamadamodules modules_install: 1213 5369f550SMichal Marek @echo >&2 1214 5369f550SMichal Marek @echo >&2 "The present kernel configuration has modules disabled." 1215 5369f550SMichal Marek @echo >&2 "Type 'make config' and enable loadable module support." 1216 5369f550SMichal Marek @echo >&2 "Then build a kernel with module support enabled." 1217 5369f550SMichal Marek @echo >&2 1218 1da177e4SLinus Torvalds @exit 1 1219 1da177e4SLinus Torvalds 1220 1da177e4SLinus Torvaldsendif # CONFIG_MODULES 1221 1da177e4SLinus Torvalds 1222 1da177e4SLinus Torvalds### 1223 1da177e4SLinus Torvalds# Cleaning is done on three levels. 1224 1da177e4SLinus Torvalds# make clean Delete most generated files 1225 1da177e4SLinus Torvalds# Leave enough to build external modules 1226 1da177e4SLinus Torvalds# make mrproper Delete the current configuration, and all generated files 1227 1da177e4SLinus Torvalds# make distclean Remove editor backup files, patch leftover files and the like 1228 1da177e4SLinus Torvalds 1229 1da177e4SLinus Torvalds# Directories & files removed with 'make clean' 1230 1da177e4SLinus TorvaldsCLEAN_DIRS += $(MODVERDIR) 1231 1da177e4SLinus Torvalds 1232 1da177e4SLinus Torvalds# Directories & files removed with 'make mrproper' 1233 d8ecc5cdSSam RavnborgMRPROPER_DIRS += include/config usr/include include/generated \ 1234 79192ca8SJason Cooper arch/*/include/generated .tmp_objdiff 1235 c22bd32cSMasahiro YamadaMRPROPER_FILES += .config .config.old .version .old_version \ 1236 d5b71936SRusty Russell Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 1237 fb117949SDavid Woodhouse signing_key.pem signing_key.priv signing_key.x509 \ 1238 fb117949SDavid Woodhouse x509.genkey extra_certificates signing_key.x509.keyid \ 1239 3ee7b3faSJan Kiszka signing_key.x509.signer vmlinux-gdb.py 1240 1da177e4SLinus Torvalds 1241 1da177e4SLinus Torvalds# clean - Delete most, but leave enough to build external modules 1242 1da177e4SLinus Torvalds# 1243 1da177e4SLinus Torvaldsclean: rm-dirs := $(CLEAN_DIRS) 1244 1da177e4SLinus Torvaldsclean: rm-files := $(CLEAN_FILES) 1245 fb68d4beSGerard Snitselaarclean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) 1246 1da177e4SLinus Torvalds 1247 bd1ee804SPawel MollPHONY += $(clean-dirs) clean archclean vmlinuxclean 1248 1da177e4SLinus Torvalds$(clean-dirs): 1249 1da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1250 1da177e4SLinus Torvalds 1251 bd1ee804SPawel Mollvmlinuxclean: 1252 bd1ee804SPawel Moll $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1253 bd1ee804SPawel Moll 1254 bd1ee804SPawel Mollclean: archclean vmlinuxclean 1255 1da177e4SLinus Torvalds 1256 1da177e4SLinus Torvalds# mrproper - Delete all generated files, including .config 1257 1da177e4SLinus Torvalds# 1258 1da177e4SLinus Torvaldsmrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1259 1da177e4SLinus Torvaldsmrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1260 1da177e4SLinus Torvaldsmrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1261 1da177e4SLinus Torvalds 1262 4f193362SPaul SmithPHONY += $(mrproper-dirs) mrproper archmrproper 1263 1da177e4SLinus Torvalds$(mrproper-dirs): 1264 1da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1265 1da177e4SLinus Torvalds 1266 1da177e4SLinus Torvaldsmrproper: clean archmrproper $(mrproper-dirs) 1267 1da177e4SLinus Torvalds $(call cmd,rmdirs) 1268 1da177e4SLinus Torvalds $(call cmd,rmfiles) 1269 1da177e4SLinus Torvalds 1270 1da177e4SLinus Torvalds# distclean 1271 1da177e4SLinus Torvalds# 1272 4f193362SPaul SmithPHONY += distclean 1273 1da177e4SLinus Torvalds 1274 1da177e4SLinus Torvaldsdistclean: mrproper 1275 1da177e4SLinus Torvalds @find $(srctree) $(RCS_FIND_IGNORE) \ 1276 1da177e4SLinus Torvalds \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1277 1da177e4SLinus Torvalds -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1278 a03fcb50SMasahiro Yamada -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \ 1279 1da177e4SLinus Torvalds -type f -print | xargs rm -f 1280 1da177e4SLinus Torvalds 1281 1da177e4SLinus Torvalds 1282 1da177e4SLinus Torvalds# Packaging of the kernel to various formats 1283 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1284 1da177e4SLinus Torvalds# rpm target kept for backward compatibility 1285 c79624c1SMichal Marekpackage-dir := scripts/package 1286 1da177e4SLinus Torvalds 1287 bafb6747SArnaldo Carvalho de Melo%src-pkg: FORCE 1288 bafb6747SArnaldo Carvalho de Melo $(Q)$(MAKE) $(build)=$(package-dir) $@ 1289 031ecc6dSZach Brown%pkg: include/config/kernel.release FORCE 1290 6c2133e1SSam Ravnborg $(Q)$(MAKE) $(build)=$(package-dir) $@ 1291 031ecc6dSZach Brownrpm: include/config/kernel.release FORCE 1292 6c2133e1SSam Ravnborg $(Q)$(MAKE) $(build)=$(package-dir) $@ 1293 1da177e4SLinus Torvalds 1294 1da177e4SLinus Torvalds 1295 1da177e4SLinus Torvalds# Brief documentation of the typical targets used 1296 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1297 1da177e4SLinus Torvalds 1298 5dffbe81SSegher Boessenkoolboards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1299 a1e7b7bbSKonstantin Khlebnikovboards := $(sort $(notdir $(boards))) 1300 5dffbe81SSegher Boessenkoolboard-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1301 5dffbe81SSegher Boessenkoolboard-dirs := $(sort $(notdir $(board-dirs:/=))) 1302 1da177e4SLinus Torvalds 1303 fe69b420SMasahiro YamadaPHONY += help 1304 1da177e4SLinus Torvaldshelp: 1305 1da177e4SLinus Torvalds @echo 'Cleaning targets:' 1306 5ea084efSSamuel Tardieu @echo ' clean - Remove most generated files but keep the config and' 1307 5cc8d246SJesper Juhl @echo ' enough build support to build external modules' 1308 5ea084efSSamuel Tardieu @echo ' mrproper - Remove all generated files + config + various backup files' 1309 5cc8d246SJesper Juhl @echo ' distclean - mrproper + remove editor backup and patch files' 1310 1da177e4SLinus Torvalds @echo '' 1311 1da177e4SLinus Torvalds @echo 'Configuration targets:' 1312 1da177e4SLinus Torvalds @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1313 1da177e4SLinus Torvalds @echo '' 1314 1da177e4SLinus Torvalds @echo 'Other generic targets:' 1315 1da177e4SLinus Torvalds @echo ' all - Build all targets marked with [*]' 1316 1da177e4SLinus Torvalds @echo '* vmlinux - Build the bare kernel' 1317 1da177e4SLinus Torvalds @echo '* modules - Build all modules' 1318 9cc5d74cSBodo Eggert @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1319 88ecf814SDavid Woodhouse @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' 1320 88ecf814SDavid Woodhouse @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1321 1da177e4SLinus Torvalds @echo ' dir/ - Build all files in dir and below' 1322 40ab87a4SWang YanQing @echo ' dir/file.[ois] - Build specified target only' 1323 62718979SJoe Perches @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1324 62718979SJoe Perches @echo ' (requires a recent binutils and recent build (System.map))' 1325 155ad605SSam Ravnborg @echo ' dir/file.ko - Build module including final link' 1326 c4d5ee67SRobert P. J. Day @echo ' modules_prepare - Set up for building external modules' 1327 1da177e4SLinus Torvalds @echo ' tags/TAGS - Generate tags file for editors' 1328 1da177e4SLinus Torvalds @echo ' cscope - Generate cscope index' 1329 f4ed1009SJianbin Kang @echo ' gtags - Generate GNU GLOBAL index' 1330 3f1d9a6cSMichal Marek @echo ' kernelrelease - Output the release version string (use with make -s)' 1331 3f1d9a6cSMichal Marek @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 1332 3f1d9a6cSMichal Marek @echo ' image_name - Output the image name (use with make -s)' 1333 2fb9b1bdSSam Ravnborg @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1334 59df3230SGeert Uytterhoeven echo ' (default: $(INSTALL_HDR_PATH))'; \ 1335 2fb9b1bdSSam Ravnborg echo '' 1336 1da177e4SLinus Torvalds @echo 'Static analysers' 1337 1da177e4SLinus Torvalds @echo ' checkstack - Generate a list of stack hogs' 1338 1da177e4SLinus Torvalds @echo ' namespacecheck - Name space analysis on compiled kernel' 1339 aa025e7dSSam Ravnborg @echo ' versioncheck - Sanity check on version.h usage' 1340 ec2d987fSRandy Dunlap @echo ' includecheck - Check for duplicate included header files' 1341 295ac051SAdrian Bunk @echo ' export_report - List the usages of all exported symbols' 1342 179efcb4SVegard Nossum @echo ' headers_check - Sanity check on exported headers' 1343 74425eeeSNicolas Palix @echo ' headerdep - Detect inclusion cycles in headers' 1344 74425eeeSNicolas Palix @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 1345 74425eeeSNicolas Palix @echo '' 1346 5a5da78bSShuah Khan @echo 'Kernel selftest' 1347 5a5da78bSShuah Khan @echo ' kselftest - Build and run kernel selftest (run as root)' 1348 5a5da78bSShuah Khan @echo ' Build, install, and boot kernel before' 1349 5a5da78bSShuah Khan @echo ' running kselftest on it' 1350 dcb825a9SWang Long @echo ' kselftest-clean - Remove all generated kselftest files' 1351 3d6dee7aSBamvor Jian Zhang @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existed' 1352 3d6dee7aSBamvor Jian Zhang @echo ' .config.' 1353 5a5da78bSShuah Khan @echo '' 1354 1da177e4SLinus Torvalds @echo 'Kernel packaging:' 1355 6c2133e1SSam Ravnborg @$(MAKE) $(build)=$(package-dir) help 1356 1da177e4SLinus Torvalds @echo '' 1357 1da177e4SLinus Torvalds @echo 'Documentation targets:' 1358 1da177e4SLinus Torvalds @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1359 1da177e4SLinus Torvalds @echo '' 1360 01dee188SAndres Salomon @echo 'Architecture specific targets ($(SRCARCH)):' 1361 1da177e4SLinus Torvalds @$(if $(archhelp),$(archhelp),\ 1362 01dee188SAndres Salomon echo ' No architecture specific help defined for $(SRCARCH)') 1363 1da177e4SLinus Torvalds @echo '' 1364 1da177e4SLinus Torvalds @$(if $(boards), \ 1365 1da177e4SLinus Torvalds $(foreach b, $(boards), \ 1366 1da177e4SLinus Torvalds printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1367 1da177e4SLinus Torvalds echo '') 1368 5dffbe81SSegher Boessenkool @$(if $(board-dirs), \ 1369 5dffbe81SSegher Boessenkool $(foreach b, $(board-dirs), \ 1370 5dffbe81SSegher Boessenkool printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1371 5dffbe81SSegher Boessenkool printf " %-16s - Show all of the above\\n" help-boards; \ 1372 5dffbe81SSegher Boessenkool echo '') 1373 1da177e4SLinus Torvalds 1374 1da177e4SLinus Torvalds @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1375 45d506bdSSam Ravnborg @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1376 1da177e4SLinus Torvalds @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1377 701842e3SDustin Kirkland @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1378 701842e3SDustin Kirkland @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1379 af07ce3eSIngo Molnar @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1380 28bc20dcSSam Ravnborg @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1381 28bc20dcSSam Ravnborg @echo ' 1: warnings which may be relevant and do not occur too often' 1382 28bc20dcSSam Ravnborg @echo ' 2: warnings which occur quite often but may still be relevant' 1383 28bc20dcSSam Ravnborg @echo ' 3: more obscure warnings, can most likely be ignored' 1384 a6de553dSMichal Marek @echo ' Multiple levels can be combined with W=12 or W=123' 1385 1da177e4SLinus Torvalds @echo '' 1386 1da177e4SLinus Torvalds @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1387 1da177e4SLinus Torvalds @echo 'For further info see the ./README file' 1388 1da177e4SLinus Torvalds 1389 1da177e4SLinus Torvalds 1390 5dffbe81SSegher Boessenkoolhelp-board-dirs := $(addprefix help-,$(board-dirs)) 1391 5dffbe81SSegher Boessenkool 1392 5dffbe81SSegher Boessenkoolhelp-boards: $(help-board-dirs) 1393 5dffbe81SSegher Boessenkool 1394 fbae4d58SMichal Marekboards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 1395 5dffbe81SSegher Boessenkool 1396 5dffbe81SSegher Boessenkool$(help-board-dirs): help-%: 1397 5dffbe81SSegher Boessenkool @echo 'Architecture specific targets ($(SRCARCH) $*):' 1398 5dffbe81SSegher Boessenkool @$(if $(boards-per-dir), \ 1399 5dffbe81SSegher Boessenkool $(foreach b, $(boards-per-dir), \ 1400 5dffbe81SSegher Boessenkool printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1401 5dffbe81SSegher Boessenkool echo '') 1402 5dffbe81SSegher Boessenkool 1403 5dffbe81SSegher Boessenkool 1404 1da177e4SLinus Torvalds# Documentation targets 1405 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1406 1da177e4SLinus Torvalds%docs: scripts_basic FORCE 1407 b479bfd0SBen Hutchings $(Q)$(MAKE) $(build)=scripts build_docproc build_check-lc_ctype 1408 1da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1409 1da177e4SLinus Torvalds 1410 1da177e4SLinus Torvaldselse # KBUILD_EXTMOD 1411 1da177e4SLinus Torvalds 1412 1da177e4SLinus Torvalds### 1413 1da177e4SLinus Torvalds# External module support. 1414 1da177e4SLinus Torvalds# When building external modules the kernel used as basis is considered 1415 1da177e4SLinus Torvalds# read-only, and no consistency checks are made and the make 1416 1da177e4SLinus Torvalds# system is not used on the basis kernel. If updates are required 1417 1da177e4SLinus Torvalds# in the basis kernel ordinary make commands (without M=...) must 1418 1da177e4SLinus Torvalds# be used. 1419 1da177e4SLinus Torvalds# 1420 1da177e4SLinus Torvalds# The following are the only valid targets when building external 1421 1da177e4SLinus Torvalds# modules. 1422 1da177e4SLinus Torvalds# make M=dir clean Delete all automatically generated files 1423 1da177e4SLinus Torvalds# make M=dir modules Make all modules in specified dir 1424 1da177e4SLinus Torvalds# make M=dir Same as 'make M=dir modules' 1425 1da177e4SLinus Torvalds# make M=dir modules_install 1426 070b98bfSSam Ravnborg# Install the modules built in the module directory 1427 1da177e4SLinus Torvalds# Assumes install directory is already created 1428 1da177e4SLinus Torvalds 1429 1da177e4SLinus Torvalds# We are always building modules 1430 1da177e4SLinus TorvaldsKBUILD_MODULES := 1 1431 4f193362SPaul SmithPHONY += crmodverdir 1432 1da177e4SLinus Torvaldscrmodverdir: 1433 7bb9d092SSam Ravnborg $(cmd_crmodverdir) 1434 1da177e4SLinus Torvalds 1435 4f193362SPaul SmithPHONY += $(objtree)/Module.symvers 1436 1da177e4SLinus Torvalds$(objtree)/Module.symvers: 1437 1da177e4SLinus Torvalds @test -e $(objtree)/Module.symvers || ( \ 1438 1da177e4SLinus Torvalds echo; \ 1439 1da177e4SLinus Torvalds echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1440 1da177e4SLinus Torvalds echo " is missing; modules will have no dependencies and modversions."; \ 1441 1da177e4SLinus Torvalds echo ) 1442 1da177e4SLinus Torvalds 1443 1da177e4SLinus Torvaldsmodule-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1444 4f193362SPaul SmithPHONY += $(module-dirs) modules 1445 1da177e4SLinus Torvalds$(module-dirs): crmodverdir $(objtree)/Module.symvers 1446 1da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1447 1da177e4SLinus Torvalds 1448 1da177e4SLinus Torvaldsmodules: $(module-dirs) 1449 fd54f502SMike Frysinger @$(kecho) ' Building modules, stage 2.'; 1450 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1451 1da177e4SLinus Torvalds 1452 4f193362SPaul SmithPHONY += modules_install 1453 a67dc21aSSam Ravnborgmodules_install: _emodinst_ _emodinst_post 1454 a67dc21aSSam Ravnborg 1455 a67dc21aSSam Ravnborginstall-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1456 4f193362SPaul SmithPHONY += _emodinst_ 1457 a67dc21aSSam Ravnborg_emodinst_: 1458 a67dc21aSSam Ravnborg $(Q)mkdir -p $(MODLIB)/$(install-dir) 1459 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1460 1da177e4SLinus Torvalds 1461 4f193362SPaul SmithPHONY += _emodinst_post 1462 a67dc21aSSam Ravnborg_emodinst_post: _emodinst_ 1463 a67dc21aSSam Ravnborg $(call cmd,depmod) 1464 a67dc21aSSam Ravnborg 1465 1da177e4SLinus Torvaldsclean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1466 1da177e4SLinus Torvalds 1467 4f193362SPaul SmithPHONY += $(clean-dirs) clean 1468 1da177e4SLinus Torvalds$(clean-dirs): 1469 1da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1470 1da177e4SLinus Torvalds 1471 1da177e4SLinus Torvaldsclean: rm-dirs := $(MODVERDIR) 1472 88d7be03SMichal Marekclean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1473 1da177e4SLinus Torvalds 1474 fe69b420SMasahiro YamadaPHONY += help 1475 1da177e4SLinus Torvaldshelp: 1476 1da177e4SLinus Torvalds @echo ' Building external modules.' 1477 1da177e4SLinus Torvalds @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1478 1da177e4SLinus Torvalds @echo '' 1479 1da177e4SLinus Torvalds @echo ' modules - default target, build the module(s)' 1480 1da177e4SLinus Torvalds @echo ' modules_install - install the module' 1481 1da177e4SLinus Torvalds @echo ' clean - remove generated files in module directory only' 1482 1da177e4SLinus Torvalds @echo '' 1483 06300b21SSam Ravnborg 1484 06300b21SSam Ravnborg# Dummies... 1485 4f193362SPaul SmithPHONY += prepare scripts 1486 06300b21SSam Ravnborgprepare: ; 1487 06300b21SSam Ravnborgscripts: ; 1488 1da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 1489 1da177e4SLinus Torvalds 1490 88d7be03SMichal Marekclean: $(clean-dirs) 1491 88d7be03SMichal Marek $(call cmd,rmdirs) 1492 88d7be03SMichal Marek $(call cmd,rmfiles) 1493 43f67c98SKevin Cernekee @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1494 88d7be03SMichal Marek \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1495 addbcdbbSDavid Howells -o -name '*.ko.*' \ 1496 866ced95SAndi Kleen -o -name '*.dwo' \ 1497 d523b255SRasmus Villemoes -o -name '*.su' \ 1498 88d7be03SMichal Marek -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1499 88d7be03SMichal Marek -o -name '*.symtypes' -o -name 'modules.order' \ 1500 88d7be03SMichal Marek -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1501 88d7be03SMichal Marek -o -name '*.gcno' \) -type f -print | xargs rm -f 1502 88d7be03SMichal Marek 1503 1da177e4SLinus Torvalds# Generate tags for editors 1504 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1505 a680eedcSSam Ravnborgquiet_cmd_tags = GEN $@ 1506 a680eedcSSam Ravnborg cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1507 1da177e4SLinus Torvalds 1508 f4ed1009SJianbin Kangtags TAGS cscope gtags: FORCE 1509 1da177e4SLinus Torvalds $(call cmd,tags) 1510 1da177e4SLinus Torvalds 1511 1da177e4SLinus Torvalds# Scripts to check various things for consistency 1512 1da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1513 1da177e4SLinus Torvalds 1514 279f3dd3SPeter FoleyPHONY += includecheck versioncheck coccicheck namespacecheck export_report 1515 279f3dd3SPeter Foley 1516 1da177e4SLinus Torvaldsincludecheck: 1517 436f876cSPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 1518 1da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 1519 80007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1520 1da177e4SLinus Torvalds 1521 1da177e4SLinus Torvaldsversioncheck: 1522 2ee2d292SPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 1523 1da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 1524 80007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1525 1da177e4SLinus Torvalds 1526 74425eeeSNicolas Palixcoccicheck: 1527 74425eeeSNicolas Palix $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 1528 74425eeeSNicolas Palix 1529 1da177e4SLinus Torvaldsnamespacecheck: 1530 1da177e4SLinus Torvalds $(PERL) $(srctree)/scripts/namespace.pl 1531 1da177e4SLinus Torvalds 1532 295ac051SAdrian Bunkexport_report: 1533 295ac051SAdrian Bunk $(PERL) $(srctree)/scripts/export_report.pl 1534 295ac051SAdrian Bunk 1535 1da177e4SLinus Torvaldsendif #ifeq ($(config-targets),1) 1536 1da177e4SLinus Torvaldsendif #ifeq ($(mixed-targets),1) 1537 1da177e4SLinus Torvalds 1538 c398ff00SMike MarciniszynPHONY += checkstack kernelrelease kernelversion image_name 1539 e3ccf6e3SJeff Dike 1540 011e3a9aSJeff Dike# UML needs a little special treatment here. It wants to use the host 1541 011e3a9aSJeff Dike# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1542 011e3a9aSJeff Dike# else wants $(ARCH), including people doing cross-builds, which means 1543 011e3a9aSJeff Dike# that $(SUBARCH) doesn't work here. 1544 011e3a9aSJeff Dikeifeq ($(ARCH), um) 1545 011e3a9aSJeff DikeCHECKSTACK_ARCH := $(SUBARCH) 1546 011e3a9aSJeff Dikeelse 1547 011e3a9aSJeff DikeCHECKSTACK_ARCH := $(ARCH) 1548 011e3a9aSJeff Dikeendif 1549 1da177e4SLinus Torvaldscheckstack: 1550 1da177e4SLinus Torvalds $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1551 011e3a9aSJeff Dike $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1552 1da177e4SLinus Torvalds 1553 7b8ea53dSAmerigo Wangkernelrelease: 1554 7b8ea53dSAmerigo Wang @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1555 01ab1788SAmerigo Wang 1556 cb58455cSSam Ravnborgkernelversion: 1557 2244cbd8SSam Ravnborg @echo $(KERNELVERSION) 1558 1da177e4SLinus Torvalds 1559 c398ff00SMike Marciniszynimage_name: 1560 c398ff00SMike Marciniszyn @echo $(KBUILD_IMAGE) 1561 c398ff00SMike Marciniszyn 1562 ea01fa9fSBorislav Petkov# Clear a bunch of variables before executing the submake 1563 ea01fa9fSBorislav Petkovtools/: FORCE 1564 bf35182fSDavid Howells $(Q)mkdir -p $(objtree)/tools 1565 e17cf3a8SJosh Poimboeuf $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ 1566 ea01fa9fSBorislav Petkov 1567 ea01fa9fSBorislav Petkovtools/%: FORCE 1568 bf35182fSDavid Howells $(Q)mkdir -p $(objtree)/tools 1569 e17cf3a8SJosh Poimboeuf $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ $* 1570 ea01fa9fSBorislav Petkov 1571 06300b21SSam Ravnborg# Single targets 1572 06300b21SSam Ravnborg# --------------------------------------------------------------------------- 1573 bc2546a6SSam Ravnborg# Single targets are compatible with: 1574 e1b8513dSRobert P. J. Day# - build with mixed source and output 1575 bc2546a6SSam Ravnborg# - build with separate output dir 'make O=...' 1576 bc2546a6SSam Ravnborg# - external modules 1577 bc2546a6SSam Ravnborg# 1578 bc2546a6SSam Ravnborg# target-dir => where to store outputfile 1579 bc2546a6SSam Ravnborg# build-dir => directory in kernel source tree to use 1580 06300b21SSam Ravnborg 1581 06300b21SSam Ravnborgifeq ($(KBUILD_EXTMOD),) 1582 aa360879SSam Ravnborg build-dir = $(patsubst %/,%,$(dir $@)) 1583 bc2546a6SSam Ravnborg target-dir = $(dir $@) 1584 06300b21SSam Ravnborgelse 1585 06300b21SSam Ravnborg zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1586 bc2546a6SSam Ravnborg build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1587 bc2546a6SSam Ravnborg target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1588 06300b21SSam Ravnborgendif 1589 06300b21SSam Ravnborg 1590 bc2546a6SSam Ravnborg%.s: %.c prepare scripts FORCE 1591 bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1592 bc2546a6SSam Ravnborg%.i: %.c prepare scripts FORCE 1593 bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1594 bc2546a6SSam Ravnborg%.o: %.c prepare scripts FORCE 1595 bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1596 bc2546a6SSam Ravnborg%.lst: %.c prepare scripts FORCE 1597 bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1598 bc2546a6SSam Ravnborg%.s: %.S prepare scripts FORCE 1599 bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1600 bc2546a6SSam Ravnborg%.o: %.S prepare scripts FORCE 1601 bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1602 15fde675SAndreas Gruenbacher%.symtypes: %.c prepare scripts FORCE 1603 15fde675SAndreas Gruenbacher $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1604 bc2546a6SSam Ravnborg 1605 bc2546a6SSam Ravnborg# Modules 1606 31110ebbSSam Ravnborg/: prepare scripts FORCE 1607 31110ebbSSam Ravnborg $(cmd_crmodverdir) 1608 31110ebbSSam Ravnborg $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1609 31110ebbSSam Ravnborg $(build)=$(build-dir) 1610 8e2faea8SPeter Foley# Make sure the latest headers are built for Documentation 1611 8e2faea8SPeter FoleyDocumentation/: headers_install 1612 31110ebbSSam Ravnborg%/: prepare scripts FORCE 1613 7bb9d092SSam Ravnborg $(cmd_crmodverdir) 1614 06300b21SSam Ravnborg $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1615 bc2546a6SSam Ravnborg $(build)=$(build-dir) 1616 bc2546a6SSam Ravnborg%.ko: prepare scripts FORCE 1617 7bb9d092SSam Ravnborg $(cmd_crmodverdir) 1618 06300b21SSam Ravnborg $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1619 bc2546a6SSam Ravnborg $(build)=$(build-dir) $(@:.ko=.o) 1620 b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1621 06300b21SSam Ravnborg 1622 1da177e4SLinus Torvalds# FIXME Should go into a make.lib or something 1623 1da177e4SLinus Torvalds# =========================================================================== 1624 1da177e4SLinus Torvalds 1625 1da177e4SLinus Torvaldsquiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1626 1da177e4SLinus Torvalds cmd_rmdirs = rm -rf $(rm-dirs) 1627 1da177e4SLinus Torvalds 1628 1da177e4SLinus Torvaldsquiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1629 1da177e4SLinus Torvalds cmd_rmfiles = rm -f $(rm-files) 1630 1da177e4SLinus Torvalds 1631 bc3c26feSUwe Kleine-König# Run depmod only if we have System.map and depmod is executable 1632 50a8ec31SSam Ravnborgquiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1633 569658ddSMichal Marek cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 1634 b92021b0SRusty Russell $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" 1635 50a8ec31SSam Ravnborg 1636 7bb9d092SSam Ravnborg# Create temporary dir for module support files 1637 ab19f879SSam Ravnborg# clean it up only when building all modules 1638 ab19f879SSam Ravnborgcmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1639 ab19f879SSam Ravnborg $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 1640 1da177e4SLinus Torvalds 1641 1da177e4SLinus Torvalds# read all saved command lines 1642 1da177e4SLinus Torvalds 1643 1da177e4SLinus Torvaldstargets := $(wildcard $(sort $(targets))) 1644 1da177e4SLinus Torvaldscmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1645 1da177e4SLinus Torvalds 1646 1da177e4SLinus Torvaldsifneq ($(cmd_files),) 1647 1da177e4SLinus Torvalds $(cmd_files): ; # Do not try to update included dependency files 1648 1da177e4SLinus Torvalds include $(cmd_files) 1649 1da177e4SLinus Torvaldsendif 1650 1da177e4SLinus Torvalds 1651 1da177e4SLinus Torvaldsendif # skip-makefile 1652 1da177e4SLinus Torvalds 1653 4f193362SPaul SmithPHONY += FORCE 1654 1da177e4SLinus TorvaldsFORCE: 1655 4f193362SPaul Smith 1656 4f193362SPaul Smith# Declare the contents of the .PHONY variable as phony. We keep that 1657 fe8d0a41SKirill Smelkov# information in a variable so we can use it in if_changed and friends. 1658 4f193362SPaul Smith.PHONY: $(PHONY) 1659