1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 2bfeffd15SLinus TorvaldsVERSION = 5 3e73f0f0eSLinus TorvaldsPATCHLEVEL = 14 455922c9dSLinus TorvaldsSUBLEVEL = 0 536a21d51SLinus TorvaldsEXTRAVERSION = -rc5 613311e74SLinus TorvaldsNAME = Opossums on Parade 71da177e4SLinus Torvalds 81da177e4SLinus Torvalds# *DOCUMENTATION* 91da177e4SLinus Torvalds# To see a list of typical targets execute "make help" 101da177e4SLinus Torvalds# More info can be located in ./README 111da177e4SLinus Torvalds# Comments in this file are targeted only to the developer, do not 121da177e4SLinus Torvalds# expect to learn how to build the kernel reading this file. 131da177e4SLinus Torvalds 14121c2a13SMasahiro Yamada$(if $(filter __%, $(MAKECMDGOALS)), \ 15121c2a13SMasahiro Yamada $(error targets prefixed with '__' are only for internal use)) 16121c2a13SMasahiro Yamada 17ba634eceSMasahiro Yamada# That's our default target when none is given on the command line 18121c2a13SMasahiro YamadaPHONY := __all 19121c2a13SMasahiro Yamada__all: 20ba634eceSMasahiro Yamada 211da177e4SLinus Torvalds# We are using a recursive build, so we need to do a little thinking 221da177e4SLinus Torvalds# to get the ordering right. 231da177e4SLinus Torvalds# 241da177e4SLinus Torvalds# Most importantly: sub-Makefiles should only ever modify files in 251da177e4SLinus Torvalds# their own directory. If in some directory we have a dependency on 261da177e4SLinus Torvalds# a file in another dir (which doesn't happen often, but it's often 27f49821eeSNicholas Piggin# unavoidable when linking the built-in.a targets which finally 281da177e4SLinus Torvalds# turn into vmlinux), we will call a sub make in that other dir, and 291da177e4SLinus Torvalds# after that we are sure that everything which is in that other dir 301da177e4SLinus Torvalds# is now up to date. 311da177e4SLinus Torvalds# 321da177e4SLinus Torvalds# The only cases where we need to modify files which have global 331da177e4SLinus Torvalds# effects are thus separated out and done before the recursive 341da177e4SLinus Torvalds# descending is started. They are now explicitly listed as the 351da177e4SLinus Torvalds# prepare rule. 361da177e4SLinus Torvalds 37221cc2d2SMasahiro Yamadaifneq ($(sub_make_done),1) 383812b8c5SMasahiro Yamada 393812b8c5SMasahiro Yamada# Do not use make's built-in rules and variables 403812b8c5SMasahiro Yamada# (this increases performance and avoids hard-to-debug behaviour) 413812b8c5SMasahiro YamadaMAKEFLAGS += -rR 423812b8c5SMasahiro Yamada 433812b8c5SMasahiro Yamada# Avoid funny character set dependencies 443812b8c5SMasahiro Yamadaunexport LC_ALL 453812b8c5SMasahiro YamadaLC_COLLATE=C 463812b8c5SMasahiro YamadaLC_NUMERIC=C 473812b8c5SMasahiro Yamadaexport LC_COLLATE LC_NUMERIC 483812b8c5SMasahiro Yamada 493812b8c5SMasahiro Yamada# Avoid interference with shell env settings 503812b8c5SMasahiro Yamadaunexport GREP_OPTIONS 513812b8c5SMasahiro Yamada 52066b7ed9SMichal Marek# Beautify output 53066b7ed9SMichal Marek# --------------------------------------------------------------------------- 54066b7ed9SMichal Marek# 55066b7ed9SMichal Marek# Normally, we echo the whole command before executing it. By making 56066b7ed9SMichal Marek# that echo $($(quiet)$(cmd)), we now have the possibility to set 57066b7ed9SMichal Marek# $(quiet) to choose other forms of output instead, e.g. 58066b7ed9SMichal Marek# 59066b7ed9SMichal Marek# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 60066b7ed9SMichal Marek# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 61066b7ed9SMichal Marek# 62066b7ed9SMichal Marek# If $(quiet) is empty, the whole command will be printed. 63066b7ed9SMichal Marek# If it is set to "quiet_", only the short version will be printed. 64066b7ed9SMichal Marek# If it is set to "silent_", nothing will be printed at all, since 65066b7ed9SMichal Marek# the variable $(silent_cmd_cc_o_c) doesn't exist. 66066b7ed9SMichal Marek# 67066b7ed9SMichal Marek# A simple variant is to prefix commands with $(Q) - that's useful 68066b7ed9SMichal Marek# for commands that shall be hidden in non-verbose mode. 69066b7ed9SMichal Marek# 70066b7ed9SMichal Marek# $(Q)ln $@ :< 71066b7ed9SMichal Marek# 72066b7ed9SMichal Marek# If KBUILD_VERBOSE equals 0 then the above command will be hidden. 73066b7ed9SMichal Marek# If KBUILD_VERBOSE equals 1 then the above command is displayed. 74505b12b3SRandy Dunlap# If KBUILD_VERBOSE equals 2 then give the reason why each target is rebuilt. 75066b7ed9SMichal Marek# 761da177e4SLinus Torvalds# To put more focus on warnings, be less verbose as default 771da177e4SLinus Torvalds# Use 'make V=1' to see the full commands 781da177e4SLinus Torvalds 791da177e4SLinus Torvaldsifeq ("$(origin V)", "command line") 801da177e4SLinus Torvalds KBUILD_VERBOSE = $(V) 811da177e4SLinus Torvaldsendif 821da177e4SLinus Torvaldsifndef KBUILD_VERBOSE 831da177e4SLinus Torvalds KBUILD_VERBOSE = 0 841da177e4SLinus Torvaldsendif 851da177e4SLinus Torvalds 86066b7ed9SMichal Marekifeq ($(KBUILD_VERBOSE),1) 87066b7ed9SMichal Marek quiet = 88066b7ed9SMichal Marek Q = 89066b7ed9SMichal Marekelse 90066b7ed9SMichal Marek quiet=quiet_ 91066b7ed9SMichal Marek Q = @ 92066b7ed9SMichal Marekendif 93066b7ed9SMichal Marek 94066b7ed9SMichal Marek# If the user is running make -s (silent mode), suppress echoing of 95066b7ed9SMichal Marek# commands 96066b7ed9SMichal Marek 976f0fa58eSMasahiro Yamadaifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) 98066b7ed9SMichal Marek quiet=silent_ 9922149454SMasahiro Yamada KBUILD_VERBOSE = 0 100066b7ed9SMichal Marekendif 101066b7ed9SMichal Marek 102066b7ed9SMichal Marekexport quiet Q KBUILD_VERBOSE 103066b7ed9SMichal Marek 104bcf637f5SMasahiro Yamada# Call a source code checker (by default, "sparse") as part of the 105bcf637f5SMasahiro Yamada# C compilation. 106bcf637f5SMasahiro Yamada# 107bcf637f5SMasahiro Yamada# Use 'make C=1' to enable checking of only re-compiled files. 108bcf637f5SMasahiro Yamada# Use 'make C=2' to enable checking of *all* source files, regardless 109bcf637f5SMasahiro Yamada# of whether they are re-compiled or not. 110bcf637f5SMasahiro Yamada# 111bcf637f5SMasahiro Yamada# See the file "Documentation/dev-tools/sparse.rst" for more details, 112bcf637f5SMasahiro Yamada# including where to get the "sparse" utility. 113bcf637f5SMasahiro Yamada 114bcf637f5SMasahiro Yamadaifeq ("$(origin C)", "command line") 115bcf637f5SMasahiro Yamada KBUILD_CHECKSRC = $(C) 116bcf637f5SMasahiro Yamadaendif 117bcf637f5SMasahiro Yamadaifndef KBUILD_CHECKSRC 118bcf637f5SMasahiro Yamada KBUILD_CHECKSRC = 0 119bcf637f5SMasahiro Yamadaendif 120bcf637f5SMasahiro Yamada 121bcf637f5SMasahiro Yamadaexport KBUILD_CHECKSRC 122bcf637f5SMasahiro Yamada 123bcf637f5SMasahiro Yamada# Use make M=dir or set the environment variable KBUILD_EXTMOD to specify the 124bcf637f5SMasahiro Yamada# directory of external module to build. Setting M= takes precedence. 125bcf637f5SMasahiro Yamadaifeq ("$(origin M)", "command line") 126bcf637f5SMasahiro Yamada KBUILD_EXTMOD := $(M) 127bcf637f5SMasahiro Yamadaendif 128bcf637f5SMasahiro Yamada 129bcf637f5SMasahiro Yamada$(if $(word 2, $(KBUILD_EXTMOD)), \ 130bcf637f5SMasahiro Yamada $(error building multiple external modules is not supported)) 131bcf637f5SMasahiro Yamada 13274ee585bSMasahiro Yamada# Remove trailing slashes 13374ee585bSMasahiro Yamadaifneq ($(filter %/, $(KBUILD_EXTMOD)),) 13474ee585bSMasahiro YamadaKBUILD_EXTMOD := $(shell dirname $(KBUILD_EXTMOD).) 13574ee585bSMasahiro Yamadaendif 13674ee585bSMasahiro Yamada 137bcf637f5SMasahiro Yamadaexport KBUILD_EXTMOD 138bcf637f5SMasahiro Yamada 13925b146c5SMasahiro Yamada# Kbuild will save output files in the current working directory. 14025b146c5SMasahiro Yamada# This does not need to match to the root of the kernel source tree. 14125b146c5SMasahiro Yamada# 14225b146c5SMasahiro Yamada# For example, you can do this: 14325b146c5SMasahiro Yamada# 14425b146c5SMasahiro Yamada# cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile 14525b146c5SMasahiro Yamada# 14625b146c5SMasahiro Yamada# If you want to save output files in a different location, there are 14725b146c5SMasahiro Yamada# two syntaxes to specify it. 14825b146c5SMasahiro Yamada# 1491da177e4SLinus Torvalds# 1) O= 1501da177e4SLinus Torvalds# Use "make O=dir/to/store/output/files/" 1511da177e4SLinus Torvalds# 1521da177e4SLinus Torvalds# 2) Set KBUILD_OUTPUT 15325b146c5SMasahiro Yamada# Set the environment variable KBUILD_OUTPUT to point to the output directory. 15425b146c5SMasahiro Yamada# export KBUILD_OUTPUT=dir/to/store/output/files/; make 1551da177e4SLinus Torvalds# 1561da177e4SLinus Torvalds# The O= assignment takes precedence over the KBUILD_OUTPUT environment 1571da177e4SLinus Torvalds# variable. 1581da177e4SLinus Torvalds 15925b146c5SMasahiro Yamada# Do we want to change the working directory? 1601da177e4SLinus Torvaldsifeq ("$(origin O)", "command line") 1611da177e4SLinus Torvalds KBUILD_OUTPUT := $(O) 1621da177e4SLinus Torvaldsendif 1631da177e4SLinus Torvalds 16425b146c5SMasahiro Yamadaifneq ($(KBUILD_OUTPUT),) 16525b146c5SMasahiro Yamada# Make's built-in functions such as $(abspath ...), $(realpath ...) cannot 16625b146c5SMasahiro Yamada# expand a shell special character '~'. We use a somewhat tedious way here. 16725b146c5SMasahiro Yamadaabs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) 16825b146c5SMasahiro Yamada$(if $(abs_objtree),, \ 16925b146c5SMasahiro Yamada $(error failed to create output directory "$(KBUILD_OUTPUT)")) 17025b146c5SMasahiro Yamada 17125b146c5SMasahiro Yamada# $(realpath ...) resolves symlinks 17225b146c5SMasahiro Yamadaabs_objtree := $(realpath $(abs_objtree)) 17325b146c5SMasahiro Yamadaelse 17425b146c5SMasahiro Yamadaabs_objtree := $(CURDIR) 17525b146c5SMasahiro Yamadaendif # ifneq ($(KBUILD_OUTPUT),) 17625b146c5SMasahiro Yamada 17725b146c5SMasahiro Yamadaifeq ($(abs_objtree),$(CURDIR)) 17825b146c5SMasahiro Yamada# Suppress "Entering directory ..." unless we are changing the work directory. 17925b146c5SMasahiro YamadaMAKEFLAGS += --no-print-directory 18025b146c5SMasahiro Yamadaelse 18125b146c5SMasahiro Yamadaneed-sub-make := 1 18251193b76SRobert Jarzmikendif 18351193b76SRobert Jarzmik 18430cef68dSMasahiro Yamadathis-makefile := $(lastword $(MAKEFILE_LIST)) 18530cef68dSMasahiro Yamadaabs_srctree := $(realpath $(dir $(this-makefile))) 1861da177e4SLinus Torvalds 18725b146c5SMasahiro Yamadaifneq ($(words $(subst :, ,$(abs_srctree))), 1) 18825b146c5SMasahiro Yamada$(error source directory cannot contain spaces or colons) 18925b146c5SMasahiro Yamadaendif 19025b146c5SMasahiro Yamada 19125b146c5SMasahiro Yamadaifneq ($(abs_srctree),$(abs_objtree)) 19280463f1bSMasahiro Yamada# Look for make include files relative to root of kernel src 19380463f1bSMasahiro Yamada# 194d8285639SMasahiro Yamada# --included-dir is added for backward compatibility, but you should not rely on 195d8285639SMasahiro Yamada# it. Please add $(srctree)/ prefix to include Makefiles in the source tree. 19625b146c5SMasahiro YamadaMAKEFLAGS += --include-dir=$(abs_srctree) 19725b146c5SMasahiro Yamadaendif 1983812b8c5SMasahiro Yamada 199688931a5SMasahiro Yamadaifneq ($(filter 3.%,$(MAKE_VERSION)),) 200688931a5SMasahiro Yamada# 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x 201688931a5SMasahiro Yamada# We need to invoke sub-make to avoid implicit rules in the top Makefile. 202688931a5SMasahiro Yamadaneed-sub-make := 1 203688931a5SMasahiro Yamada# Cancel implicit rules for this Makefile. 20493fdddfeSMasahiro Yamada$(this-makefile): ; 205688931a5SMasahiro Yamadaendif 206688931a5SMasahiro Yamada 20725b146c5SMasahiro Yamadaexport abs_srctree abs_objtree 208221cc2d2SMasahiro Yamadaexport sub_make_done := 1 209221cc2d2SMasahiro Yamada 210688931a5SMasahiro Yamadaifeq ($(need-sub-make),1) 211688931a5SMasahiro Yamada 212121c2a13SMasahiro YamadaPHONY += $(MAKECMDGOALS) __sub-make 2130b35786dSMilton Miller 214121c2a13SMasahiro Yamada$(filter-out $(this-makefile), $(MAKECMDGOALS)) __all: __sub-make 21516f89098SCharles Keepax @: 2160b35786dSMilton Miller 217c4e6fff1SCao jin# Invoke a second make in the output directory, passing relevant variables 218121c2a13SMasahiro Yamada__sub-make: 21925b146c5SMasahiro Yamada $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS) 2201da177e4SLinus Torvalds 221688931a5SMasahiro Yamadaendif # need-sub-make 222221cc2d2SMasahiro Yamadaendif # sub_make_done 223688931a5SMasahiro Yamada 2241da177e4SLinus Torvalds# We process the rest of the Makefile if this is the final invocation of make 225688931a5SMasahiro Yamadaifeq ($(need-sub-make),) 2261da177e4SLinus Torvalds 2277ff52571SMasahiro Yamada# Do not print "Entering directory ...", 2287ff52571SMasahiro Yamada# but we want to display it when entering to the output directory 2297ff52571SMasahiro Yamada# so that IDEs/editors are able to understand relative filenames. 2307ff52571SMasahiro YamadaMAKEFLAGS += --no-print-directory 2317ff52571SMasahiro Yamada 23225b146c5SMasahiro Yamadaifeq ($(abs_srctree),$(abs_objtree)) 2339da0763bSMichal Marek # building in the source tree 2349da0763bSMichal Marek srctree := . 235051f278eSMasahiro Yamada building_out_of_srctree := 2369da0763bSMichal Marekelse 23725b146c5SMasahiro Yamada ifeq ($(abs_srctree)/,$(dir $(abs_objtree))) 2389da0763bSMichal Marek # building in a subdirectory of the source tree 2399da0763bSMichal Marek srctree := .. 2409da0763bSMichal Marek else 24125b146c5SMasahiro Yamada srctree := $(abs_srctree) 2429da0763bSMichal Marek endif 243051f278eSMasahiro Yamada building_out_of_srctree := 1 2449da0763bSMichal Marekendif 2452c1f4f12SMasahiro Yamada 24695fd3f87SMasahiro Yamadaifneq ($(KBUILD_ABS_SRCTREE),) 24795fd3f87SMasahiro Yamadasrctree := $(abs_srctree) 24895fd3f87SMasahiro Yamadaendif 2492c1f4f12SMasahiro Yamada 2507e1c0477SMichal Marekobjtree := . 2516b12de69SMasahiro YamadaVPATH := $(srctree) 2521da177e4SLinus Torvalds 253051f278eSMasahiro Yamadaexport building_out_of_srctree srctree objtree VPATH 2541da177e4SLinus Torvalds 2552c1f4f12SMasahiro Yamada# To make sure we do not include .config for any of the *config targets 2562c1f4f12SMasahiro Yamada# catch them early, and hand them over to scripts/kconfig/Makefile 2572c1f4f12SMasahiro Yamada# It is allowed to specify more targets when calling make, including 2582c1f4f12SMasahiro Yamada# mixing *config targets and build targets. 2592c1f4f12SMasahiro Yamada# For example 'make oldconfig all'. 2602c1f4f12SMasahiro Yamada# Detect when mixed targets is specified, and make a second invocation 2612c1f4f12SMasahiro Yamada# of make so .config is not included in this case either (for *config). 2622c1f4f12SMasahiro Yamada 2632c1f4f12SMasahiro Yamadaversion_h := include/generated/uapi/linux/version.h 2642c1f4f12SMasahiro Yamada 26522340a06SMasahiro Yamadaclean-targets := %clean mrproper cleandocs 26622340a06SMasahiro Yamadano-dot-config-targets := $(clean-targets) \ 2672c1f4f12SMasahiro Yamada cscope gtags TAGS tags help% %docs check% coccicheck \ 26859b2bd05SMasahiro Yamada $(version_h) headers headers_% archheaders archscripts \ 2694623980dSDavid Engraf %asm-generic kernelversion %src-pkg dt_binding_check \ 2704623980dSDavid Engraf outputmakefile 271805b2e1dSMasahiro Yamada# Installation targets should not require compiler. Unfortunately, vdso_install 272805b2e1dSMasahiro Yamada# is an exception where build artifacts may be updated. This must be fixed. 273805b2e1dSMasahiro Yamadano-compiler-targets := $(no-dot-config-targets) install dtbs_install \ 274805b2e1dSMasahiro Yamada headers_install modules_install kernelrelease image_name 275993bdde9SMasahiro Yamadano-sync-config-targets := $(no-dot-config-targets) %install kernelrelease \ 276993bdde9SMasahiro Yamada image_name 277394053f4SMasahiro Yamadasingle-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/ 2782c1f4f12SMasahiro Yamada 2792042b548SMasahiro Yamadaconfig-build := 2802042b548SMasahiro Yamadamixed-build := 2812042b548SMasahiro Yamadaneed-config := 1 282805b2e1dSMasahiro Yamadaneed-compiler := 1 283d7942413SMasahiro Yamadamay-sync-config := 1 284394053f4SMasahiro Yamadasingle-build := 2852c1f4f12SMasahiro Yamada 2862c1f4f12SMasahiro Yamadaifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 2872c1f4f12SMasahiro Yamada ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 2882042b548SMasahiro Yamada need-config := 2892c1f4f12SMasahiro Yamada endif 2902c1f4f12SMasahiro Yamadaendif 2912c1f4f12SMasahiro Yamada 292805b2e1dSMasahiro Yamadaifneq ($(filter $(no-compiler-targets), $(MAKECMDGOALS)),) 293805b2e1dSMasahiro Yamada ifeq ($(filter-out $(no-compiler-targets), $(MAKECMDGOALS)),) 294805b2e1dSMasahiro Yamada need-compiler := 295805b2e1dSMasahiro Yamada endif 296805b2e1dSMasahiro Yamadaendif 297805b2e1dSMasahiro Yamada 298d7942413SMasahiro Yamadaifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) 299d7942413SMasahiro Yamada ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) 3002042b548SMasahiro Yamada may-sync-config := 301d7942413SMasahiro Yamada endif 302d7942413SMasahiro Yamadaendif 303d7942413SMasahiro Yamada 304d7942413SMasahiro Yamadaifneq ($(KBUILD_EXTMOD),) 3052042b548SMasahiro Yamada may-sync-config := 306d7942413SMasahiro Yamadaendif 307d7942413SMasahiro Yamada 3082c1f4f12SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 309efbf9726SMasahiro Yamada ifneq ($(filter %config,$(MAKECMDGOALS)),) 3102042b548SMasahiro Yamada config-build := 1 3112c1f4f12SMasahiro Yamada ifneq ($(words $(MAKECMDGOALS)),1) 3122042b548SMasahiro Yamada mixed-build := 1 3132c1f4f12SMasahiro Yamada endif 3142c1f4f12SMasahiro Yamada endif 3152c1f4f12SMasahiro Yamadaendif 31622340a06SMasahiro Yamada 317394053f4SMasahiro Yamada# We cannot build single targets and the others at the same time 318394053f4SMasahiro Yamadaifneq ($(filter $(single-targets), $(MAKECMDGOALS)),) 319394053f4SMasahiro Yamada single-build := 1 320394053f4SMasahiro Yamada ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),) 321394053f4SMasahiro Yamada mixed-build := 1 322394053f4SMasahiro Yamada endif 323394053f4SMasahiro Yamadaendif 324394053f4SMasahiro Yamada 32522340a06SMasahiro Yamada# For "make -j clean all", "make -j mrproper defconfig all", etc. 32622340a06SMasahiro Yamadaifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 32722340a06SMasahiro Yamada ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 3282042b548SMasahiro Yamada mixed-build := 1 32922340a06SMasahiro Yamada endif 33022340a06SMasahiro Yamadaendif 33122340a06SMasahiro Yamada 3322c1f4f12SMasahiro Yamada# install and modules_install need also be processed one by one 3332c1f4f12SMasahiro Yamadaifneq ($(filter install,$(MAKECMDGOALS)),) 3342c1f4f12SMasahiro Yamada ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 3352042b548SMasahiro Yamada mixed-build := 1 3362c1f4f12SMasahiro Yamada endif 3372c1f4f12SMasahiro Yamadaendif 3382c1f4f12SMasahiro Yamada 3392042b548SMasahiro Yamadaifdef mixed-build 3402c1f4f12SMasahiro Yamada# =========================================================================== 3412c1f4f12SMasahiro Yamada# We're called with mixed targets (*config and build targets). 3422c1f4f12SMasahiro Yamada# Handle them one by one. 3432c1f4f12SMasahiro Yamada 3442c1f4f12SMasahiro YamadaPHONY += $(MAKECMDGOALS) __build_one_by_one 3452c1f4f12SMasahiro Yamada 346121c2a13SMasahiro Yamada$(MAKECMDGOALS): __build_one_by_one 3472c1f4f12SMasahiro Yamada @: 3482c1f4f12SMasahiro Yamada 3492c1f4f12SMasahiro Yamada__build_one_by_one: 3502c1f4f12SMasahiro Yamada $(Q)set -e; \ 3512c1f4f12SMasahiro Yamada for i in $(MAKECMDGOALS); do \ 3522c1f4f12SMasahiro Yamada $(MAKE) -f $(srctree)/Makefile $$i; \ 3532c1f4f12SMasahiro Yamada done 3542c1f4f12SMasahiro Yamada 3552042b548SMasahiro Yamadaelse # !mixed-build 3562c1f4f12SMasahiro Yamada 3573204a7fbSMasahiro Yamadainclude $(srctree)/scripts/Kbuild.include 3582c1f4f12SMasahiro Yamada 3592c1f4f12SMasahiro Yamada# Read KERNELRELEASE from include/config/kernel.release (if it exists) 3602c1f4f12SMasahiro YamadaKERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 3612c1f4f12SMasahiro YamadaKERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 3622c1f4f12SMasahiro Yamadaexport VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 3632c1f4f12SMasahiro Yamada 3643204a7fbSMasahiro Yamadainclude $(srctree)/scripts/subarch.include 3651da177e4SLinus Torvalds 3661da177e4SLinus Torvalds# Cross compiling and selecting different set of gcc/bin-utils 3671da177e4SLinus Torvalds# --------------------------------------------------------------------------- 3681da177e4SLinus Torvalds# 3691da177e4SLinus Torvalds# When performing cross compilation for other architectures ARCH shall be set 3701da177e4SLinus Torvalds# to the target architecture. (See arch/* for the possibilities). 3711da177e4SLinus Torvalds# ARCH can be set during invocation of make: 3721da177e4SLinus Torvalds# make ARCH=ia64 3731da177e4SLinus Torvalds# Another way is to have ARCH set in the environment. 3741da177e4SLinus Torvalds# The default ARCH is the host where make is executed. 3751da177e4SLinus Torvalds 3761da177e4SLinus Torvalds# CROSS_COMPILE specify the prefix used for all executables used 3771da177e4SLinus Torvalds# during compilation. Only gcc and related bin-utils executables 3781da177e4SLinus Torvalds# are prefixed with $(CROSS_COMPILE). 3791da177e4SLinus Torvalds# CROSS_COMPILE can be set on the command line 3801da177e4SLinus Torvalds# make CROSS_COMPILE=ia64-linux- 3811da177e4SLinus Torvalds# Alternatively CROSS_COMPILE can be set in the environment. 3821da177e4SLinus Torvalds# Default value for CROSS_COMPILE is not to prefix executables 3831da177e4SLinus Torvalds# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 3842331d1a6SSam RavnborgARCH ?= $(SUBARCH) 3851da177e4SLinus Torvalds 3861da177e4SLinus Torvalds# Architecture as present in compile.h 3871da177e4SLinus TorvaldsUTS_MACHINE := $(ARCH) 3886752ed90SThomas GleixnerSRCARCH := $(ARCH) 3891da177e4SLinus Torvalds 390d746d647SSam Ravnborg# Additional ARCH settings for x86 391d746d647SSam Ravnborgifeq ($(ARCH),i386) 392d746d647SSam Ravnborg SRCARCH := x86 393d746d647SSam Ravnborgendif 394d746d647SSam Ravnborgifeq ($(ARCH),x86_64) 395d746d647SSam Ravnborg SRCARCH := x86 396d746d647SSam Ravnborgendif 39774b469f2SSam Ravnborg 3985e538790SSam Ravnborg# Additional ARCH settings for sparc 399e69f58c0SNamhyung Kimifeq ($(ARCH),sparc32) 400e69f58c0SNamhyung Kim SRCARCH := sparc 401e69f58c0SNamhyung Kimendif 402a439fe51SSam Ravnborgifeq ($(ARCH),sparc64) 4035e538790SSam Ravnborg SRCARCH := sparc 404a439fe51SSam Ravnborgendif 4052fb9b1bdSSam Ravnborg 406f02aa48dSMasahiro Yamadaexport cross_compiling := 407f02aa48dSMasahiro Yamadaifneq ($(SRCARCH),$(SUBARCH)) 408f02aa48dSMasahiro Yamadacross_compiling := 1 409f02aa48dSMasahiro Yamadaendif 410f02aa48dSMasahiro Yamada 41114cdd3c4SRoman ZippelKCONFIG_CONFIG ?= .config 41241263fc6SBen Gardinerexport KCONFIG_CONFIG 41314cdd3c4SRoman Zippel 4141da177e4SLinus Torvalds# SHELL used by kbuild 415858805b3SMasahiro YamadaCONFIG_SHELL := sh 4161da177e4SLinus Torvalds 4176d79a7b4SMasahiro YamadaHOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 4186d79a7b4SMasahiro YamadaHOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 4196d79a7b4SMasahiro YamadaHOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 420d7f14c66SUwe Kleine-König 421a0d1c951SMasahiro Yamadaifneq ($(LLVM),) 422a0d1c951SMasahiro YamadaHOSTCC = clang 423a0d1c951SMasahiro YamadaHOSTCXX = clang++ 424a0d1c951SMasahiro Yamadaelse 4251da177e4SLinus TorvaldsHOSTCC = gcc 4261da177e4SLinus TorvaldsHOSTCXX = g++ 427a0d1c951SMasahiro Yamadaendif 4287f3a59dbSMasahiro Yamada 4297f3a59dbSMasahiro Yamadaexport KBUILD_USERCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \ 4307f3a59dbSMasahiro Yamada -O2 -fomit-frame-pointer -std=gnu89 4317f3a59dbSMasahiro Yamadaexport KBUILD_USERLDFLAGS := 4327f3a59dbSMasahiro Yamada 4337f3a59dbSMasahiro YamadaKBUILD_HOSTCFLAGS := $(KBUILD_USERCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS) 434735aab1eSMasahiro YamadaKBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 435f92d19e0SLaura AbbottKBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 436f92d19e0SLaura AbbottKBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 4371da177e4SLinus Torvalds 4381da177e4SLinus Torvalds# Make variables (CC, etc...) 4391da177e4SLinus TorvaldsCPP = $(CC) -E 440a0d1c951SMasahiro Yamadaifneq ($(LLVM),) 441a0d1c951SMasahiro YamadaCC = clang 442a0d1c951SMasahiro YamadaLD = ld.lld 443a0d1c951SMasahiro YamadaAR = llvm-ar 444a0d1c951SMasahiro YamadaNM = llvm-nm 445a0d1c951SMasahiro YamadaOBJCOPY = llvm-objcopy 446a0d1c951SMasahiro YamadaOBJDUMP = llvm-objdump 447a0d1c951SMasahiro YamadaREADELF = llvm-readelf 448a0d1c951SMasahiro YamadaSTRIP = llvm-strip 449a0d1c951SMasahiro Yamadaelse 450a0d1c951SMasahiro YamadaCC = $(CROSS_COMPILE)gcc 451a0d1c951SMasahiro YamadaLD = $(CROSS_COMPILE)ld 4521da177e4SLinus TorvaldsAR = $(CROSS_COMPILE)ar 4531da177e4SLinus TorvaldsNM = $(CROSS_COMPILE)nm 4541da177e4SLinus TorvaldsOBJCOPY = $(CROSS_COMPILE)objcopy 4551da177e4SLinus TorvaldsOBJDUMP = $(CROSS_COMPILE)objdump 456eefb8c12SDmitry GolovinREADELF = $(CROSS_COMPILE)readelf 457a0d1c951SMasahiro YamadaSTRIP = $(CROSS_COMPILE)strip 458a0d1c951SMasahiro Yamadaendif 459e83b9f55SAndrii NakryikoPAHOLE = pahole 460c9a0f3b8SJiri OlsaRESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve_btfids/resolve_btfids 46173a4f6dbSMasahiro YamadaLEX = flex 46273a4f6dbSMasahiro YamadaYACC = bison 4631da177e4SLinus TorvaldsAWK = awk 464caa27b66SSam RavnborgINSTALLKERNEL := installkernel 465436e980eSDominique MartinetDEPMOD = depmod 4661da177e4SLinus TorvaldsPERL = perl 467e9781b52SMasahiro YamadaPYTHON3 = python3 4681da177e4SLinus TorvaldsCHECK = sparse 469858805b3SMasahiro YamadaBASH = bash 470e4a42c82SDenis EfremovKGZIP = gzip 471e4a42c82SDenis EfremovKBZIP2 = bzip2 472e4a42c82SDenis EfremovKLZOP = lzop 4738dfb61dcSDenis EfremovLZMA = lzma 4748dfb61dcSDenis EfremovLZ4 = lz4c 4758dfb61dcSDenis EfremovXZ = xz 47648f7ddf7SNick TerrellZSTD = zstd 4778dfb61dcSDenis Efremov 47880a7d1d9SHannes EderCHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 4796c49f359SLuc Van Oostenryck -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 4800c22be07SDouglas AndersonNOSTDINC_FLAGS := 4816588169dSSam RavnborgCFLAGS_MODULE = 4826588169dSSam RavnborgAFLAGS_MODULE = 4836588169dSSam RavnborgLDFLAGS_MODULE = 4841da177e4SLinus TorvaldsCFLAGS_KERNEL = 4851da177e4SLinus TorvaldsAFLAGS_KERNEL = 486b36fad65SMichal MarekLDFLAGS_vmlinux = 4871da177e4SLinus Torvalds 488abbf1590SDavid Howells# Use USERINCLUDE when you must reference the UAPI directories only. 489abbf1590SDavid HowellsUSERINCLUDE := \ 4909d022c54SMasahiro Yamada -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 4919d022c54SMasahiro Yamada -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 492abbf1590SDavid Howells -I$(srctree)/include/uapi \ 4933308b285SArnd Bergmann -I$(objtree)/include/generated/uapi \ 494ce6ed1c4SMasahiro Yamada -include $(srctree)/include/linux/compiler-version.h \ 495abbf1590SDavid Howells -include $(srctree)/include/linux/kconfig.h 496abbf1590SDavid Howells 4971da177e4SLinus Torvalds# Use LINUXINCLUDE when you must reference the include/ directory. 4981da177e4SLinus Torvalds# Needed to be compatible with the O= option 499abbf1590SDavid HowellsLINUXINCLUDE := \ 5009d022c54SMasahiro Yamada -I$(srctree)/arch/$(SRCARCH)/include \ 5019d022c54SMasahiro Yamada -I$(objtree)/arch/$(SRCARCH)/include/generated \ 502051f278eSMasahiro Yamada $(if $(building_out_of_srctree),-I$(srctree)/include) \ 503f8224f7fSMasahiro Yamada -I$(objtree)/include \ 504f8224f7fSMasahiro Yamada $(USERINCLUDE) 5051da177e4SLinus Torvalds 50642a92bccSMasahiro YamadaKBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 507eeb5687aSMasahiro YamadaKBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ 50842a92bccSMasahiro Yamada -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ 509b89f25eaSLuc Van Oostenryck -Werror=implicit-function-declaration -Werror=implicit-int \ 510172aad81SOlaf Hering -Werror=return-type -Wno-format-security \ 511433dc2ebSMasahiro Yamada -std=gnu89 512433dc2ebSMasahiro YamadaKBUILD_CPPFLAGS := -D__KERNEL__ 51380c00ba9SSam RavnborgKBUILD_AFLAGS_KERNEL := 51480c00ba9SSam RavnborgKBUILD_CFLAGS_KERNEL := 5156588169dSSam RavnborgKBUILD_AFLAGS_MODULE := -DMODULE 5166588169dSSam RavnborgKBUILD_CFLAGS_MODULE := -DMODULE 51710df0638SMasahiro YamadaKBUILD_LDFLAGS_MODULE := 518d503ac53SMasahiro YamadaKBUILD_LDFLAGS := 5195241ab4cSMasahiro YamadaCLANG_FLAGS := 5201da177e4SLinus Torvalds 521aa824e0cSMasahiro Yamadaexport ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC 522d9b5665fSVasily Gorbikexport CPP AR NM STRIP OBJCOPY OBJDUMP READELF PAHOLE RESOLVE_BTFIDS LEX YACC AWK INSTALLKERNEL 523d8d2d382SMasahiro Yamadaexport PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX 52448f7ddf7SNick Terrellexport KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD 5257bac9870SVasily Gorbikexport KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE 5261da177e4SLinus Torvalds 527d503ac53SMasahiro Yamadaexport KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 5280e410e15SAndrey Konovalovexport KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 529222d394dSSam Ravnborgexport KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 5306588169dSSam Ravnborgexport KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 53180c00ba9SSam Ravnborgexport KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 5321da177e4SLinus Torvalds 5331da177e4SLinus Torvalds# Files to ignore in find ... statements 5341da177e4SLinus Torvalds 535ae63b2d7SPrarit Bhargavaexport RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 536ae63b2d7SPrarit Bhargava -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 537ae63b2d7SPrarit Bhargava -prune -o 538450c6076SJesper Juhlexport RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 539450c6076SJesper Juhl --exclude CVS --exclude .pc --exclude .hg --exclude .git 5401da177e4SLinus Torvalds 5411da177e4SLinus Torvalds# =========================================================================== 5421da177e4SLinus Torvalds# Rules shared between *config targets and build targets 5431da177e4SLinus Torvalds 544312a3d09SCao jin# Basic helpers built in scripts/basic/ 5454f193362SPaul SmithPHONY += scripts_basic 5461da177e4SLinus Torvaldsscripts_basic: 5471da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/basic 5481da177e4SLinus Torvalds 5494f193362SPaul SmithPHONY += outputmakefile 5502728fcfaSMasahiro Yamadaifdef building_out_of_srctree 551e8e83a23SMasahiro Yamada# Before starting out-of-tree build, make sure the source tree is clean. 552fd5f0cd6SJan Beulich# outputmakefile generates a Makefile in the output directory, if using a 553fd5f0cd6SJan Beulich# separate output directory. This allows convenient use of make in the 554fd5f0cd6SJan Beulich# output directory. 5553a51ff34SVladimir Kondratiev# At the same time when output Makefile generated, generate .gitignore to 5563a51ff34SVladimir Kondratiev# ignore whole output directory 5572728fcfaSMasahiro Yamada 5582728fcfaSMasahiro Yamadaquiet_cmd_makefile = GEN Makefile 5592728fcfaSMasahiro Yamada cmd_makefile = { \ 5602728fcfaSMasahiro Yamada echo "\# Automatically generated by $(srctree)/Makefile: don't edit"; \ 5612728fcfaSMasahiro Yamada echo "include $(srctree)/Makefile"; \ 5622728fcfaSMasahiro Yamada } > Makefile 5632728fcfaSMasahiro Yamada 5641da177e4SLinus Torvaldsoutputmakefile: 565e8e83a23SMasahiro Yamada $(Q)if [ -f $(srctree)/.config -o \ 566e8e83a23SMasahiro Yamada -d $(srctree)/include/config -o \ 567e8e83a23SMasahiro Yamada -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \ 568e8e83a23SMasahiro Yamada echo >&2 "***"; \ 569e8e83a23SMasahiro Yamada echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \ 570e8e83a23SMasahiro Yamada echo >&2 "*** in $(abs_srctree)";\ 571e8e83a23SMasahiro Yamada echo >&2 "***"; \ 572e8e83a23SMasahiro Yamada false; \ 573e8e83a23SMasahiro Yamada fi 57492979997SAndi Kleen $(Q)ln -fsn $(srctree) source 5752728fcfaSMasahiro Yamada $(call cmd,makefile) 576156e7cbbSMasahiro Yamada $(Q)test -e .gitignore || \ 577156e7cbbSMasahiro Yamada { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore 578fd5f0cd6SJan Beulichendif 5791da177e4SLinus Torvalds 580db07562aSNick Desaulniers# The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 581db07562aSNick Desaulniers# Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 582db07562aSNick Desaulniers# CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 583db07562aSNick Desaulniers# and from include/config/auto.conf.cmd to detect the compiler upgrade. 5846072b2c4SMasahiro YamadaCC_VERSION_TEXT = $(subst $(pound),,$(shell LC_ALL=C $(CC) --version 2>/dev/null | head -n 1)) 585db07562aSNick Desaulniers 586db07562aSNick Desaulniersifneq ($(findstring clang,$(CC_VERSION_TEXT)),) 5876f5b41a2SNick Desaulniersinclude $(srctree)/scripts/Makefile.clang 588ae6b289aSChris Friesendif 589ae6b289aSChris Fries 59057fd251cSMasahiro Yamada# Include this also for config targets because some architectures need 59157fd251cSMasahiro Yamada# cc-cross-prefix to determine CROSS_COMPILE. 592805b2e1dSMasahiro Yamadaifdef need-compiler 59357fd251cSMasahiro Yamadainclude $(srctree)/scripts/Makefile.compiler 594805b2e1dSMasahiro Yamadaendif 59557fd251cSMasahiro Yamada 5962042b548SMasahiro Yamadaifdef config-build 5971da177e4SLinus Torvalds# =========================================================================== 5981da177e4SLinus Torvalds# *config targets only - make sure prerequisites are updated, and descend 5991da177e4SLinus Torvalds# in scripts/kconfig to make the *config target 6001da177e4SLinus Torvalds 6011da177e4SLinus Torvalds# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 6021da177e4SLinus Torvalds# KBUILD_DEFCONFIG may point out an alternative default configuration 6031da177e4SLinus Torvalds# used for 'make defconfig' 6043204a7fbSMasahiro Yamadainclude $(srctree)/arch/$(SRCARCH)/Makefile 605315bab4eSMasahiro Yamadaexport KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 6061da177e4SLinus Torvalds 60736de077bSMasahiro Yamadaconfig: outputmakefile scripts_basic FORCE 60831110ebbSSam Ravnborg $(Q)$(MAKE) $(build)=scripts/kconfig $@ 60931110ebbSSam Ravnborg 61036de077bSMasahiro Yamada%config: outputmakefile scripts_basic FORCE 6111da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/kconfig $@ 6121da177e4SLinus Torvalds 6132042b548SMasahiro Yamadaelse #!config-build 6141da177e4SLinus Torvalds# =========================================================================== 6151da177e4SLinus Torvalds# Build targets only - this includes vmlinux, arch specific targets, clean 6161da177e4SLinus Torvalds# targets and others. In general all targets except *config targets. 6171da177e4SLinus Torvalds 6182c1f4f12SMasahiro Yamada# If building an external module we do not care about the all: rule 619121c2a13SMasahiro Yamada# but instead __all depend on modules 6202c1f4f12SMasahiro YamadaPHONY += all 6212c1f4f12SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 622121c2a13SMasahiro Yamada__all: all 6232c1f4f12SMasahiro Yamadaelse 624121c2a13SMasahiro Yamada__all: modules 6252c1f4f12SMasahiro Yamadaendif 6262c1f4f12SMasahiro Yamada 6272c1f4f12SMasahiro Yamada# Decide whether to build built-in, modular, or both. 6282c1f4f12SMasahiro Yamada# Normally, just do built-in. 6292c1f4f12SMasahiro Yamada 6302c1f4f12SMasahiro YamadaKBUILD_MODULES := 6312c1f4f12SMasahiro YamadaKBUILD_BUILTIN := 1 6322c1f4f12SMasahiro Yamada 6332c1f4f12SMasahiro Yamada# If we have only "make modules", don't compile built-in objects. 6342c1f4f12SMasahiro Yamadaifeq ($(MAKECMDGOALS),modules) 6354b50c8c4SMasahiro Yamada KBUILD_BUILTIN := 6362c1f4f12SMasahiro Yamadaendif 6372c1f4f12SMasahiro Yamada 6382c1f4f12SMasahiro Yamada# If we have "make <whatever> modules", compile modules 6392c1f4f12SMasahiro Yamada# in addition to whatever we do anyway. 6402c1f4f12SMasahiro Yamada# Just "make" or "make all" shall build modules as well 6412c1f4f12SMasahiro Yamada 6426ad7cbc0SNathan Huckleberryifneq ($(filter all modules nsdeps %compile_commands.json clang-%,$(MAKECMDGOALS)),) 6432c1f4f12SMasahiro Yamada KBUILD_MODULES := 1 6442c1f4f12SMasahiro Yamadaendif 6452c1f4f12SMasahiro Yamada 6462c1f4f12SMasahiro Yamadaifeq ($(MAKECMDGOALS),) 6472c1f4f12SMasahiro Yamada KBUILD_MODULES := 1 6482c1f4f12SMasahiro Yamadaendif 6492c1f4f12SMasahiro Yamada 6502c1f4f12SMasahiro Yamadaexport KBUILD_MODULES KBUILD_BUILTIN 6512c1f4f12SMasahiro Yamada 6522042b548SMasahiro Yamadaifdef need-config 653d93a18f2SMasahiro Yamadainclude include/config/auto.conf 654d93a18f2SMasahiro Yamadaendif 655d93a18f2SMasahiro Yamada 6561da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 6571da177e4SLinus Torvalds# Objects we will link into vmlinux / subdirs we need to visit 658d92cc4d5SMasahiro Yamadacore-y := init/ usr/ arch/$(SRCARCH)/ 659f96182e9SMasahiro Yamadadrivers-y := drivers/ sound/ 660d93a18f2SMasahiro Yamadadrivers-$(CONFIG_SAMPLES) += samples/ 6618b5f4eb3SMasahiro Yamadadrivers-$(CONFIG_NET) += net/ 6628b5f4eb3SMasahiro Yamadadrivers-y += virt/ 6631da177e4SLinus Torvaldslibs-y := lib/ 6641da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 6651da177e4SLinus Torvalds 666315bab4eSMasahiro Yamada# The all: target is the default when no target is given on the 667315bab4eSMasahiro Yamada# command line. 668315bab4eSMasahiro Yamada# This allow a user to issue only 'make' to build a kernel including modules 669315bab4eSMasahiro Yamada# Defaults to vmlinux, but the arch makefile usually adds further targets 670315bab4eSMasahiro Yamadaall: vmlinux 671315bab4eSMasahiro Yamada 672*7d73c3e9SNick DesaulniersCFLAGS_GCOV := -fprofile-arcs -ftest-coverage 673*7d73c3e9SNick Desaulniersifdef CONFIG_CC_IS_GCC 674*7d73c3e9SNick DesaulniersCFLAGS_GCOV += -fno-tree-loop-im 675*7d73c3e9SNick Desaulniersendif 6765aadfdebSMasahiro Yamadaexport CFLAGS_GCOV 677315bab4eSMasahiro Yamada 678b1f4ff74SPaulo Zanoni# The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. 679b1f4ff74SPaulo Zanoniifdef CONFIG_FUNCTION_TRACER 680b1f4ff74SPaulo Zanoni CC_FLAGS_FTRACE := -pg 681b1f4ff74SPaulo Zanoniendif 682b1f4ff74SPaulo Zanoni 683*7d73c3e9SNick Desaulniersifdef CONFIG_CC_IS_GCC 684*7d73c3e9SNick DesaulniersRETPOLINE_CFLAGS := $(call cc-option,-mindirect-branch=thunk-extern -mindirect-branch-register) 685*7d73c3e9SNick DesaulniersRETPOLINE_VDSO_CFLAGS := $(call cc-option,-mindirect-branch=thunk-inline -mindirect-branch-register) 686*7d73c3e9SNick Desaulniersendif 687*7d73c3e9SNick Desaulniersifdef CONFIG_CC_IS_CLANG 688*7d73c3e9SNick DesaulniersRETPOLINE_CFLAGS := -mretpoline-external-thunk 689*7d73c3e9SNick DesaulniersRETPOLINE_VDSO_CFLAGS := -mretpoline 690*7d73c3e9SNick Desaulniersendif 691669e06b1SMasahiro Yamadaexport RETPOLINE_CFLAGS 692669e06b1SMasahiro Yamadaexport RETPOLINE_VDSO_CFLAGS 693669e06b1SMasahiro Yamada 6943204a7fbSMasahiro Yamadainclude $(srctree)/arch/$(SRCARCH)/Makefile 695315bab4eSMasahiro Yamada 6962042b548SMasahiro Yamadaifdef need-config 6972042b548SMasahiro Yamadaifdef may-sync-config 698315bab4eSMasahiro Yamada# Read in dependencies to all Kconfig* files, make sure to run syncconfig if 699315bab4eSMasahiro Yamada# changes are detected. This should be included after arch/$(SRCARCH)/Makefile 700315bab4eSMasahiro Yamada# because some architectures define CROSS_COMPILE there. 701d2f8ae0eSMasahiro Yamadainclude include/config/auto.conf.cmd 7021da177e4SLinus Torvalds 70305850719SMasahiro Yamada$(KCONFIG_CONFIG): 70405850719SMasahiro Yamada @echo >&2 '***' 70505850719SMasahiro Yamada @echo >&2 '*** Configuration file "$@" not found!' 70605850719SMasahiro Yamada @echo >&2 '***' 70705850719SMasahiro Yamada @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or' 70805850719SMasahiro Yamada @echo >&2 '*** "make menuconfig" or "make xconfig").' 70905850719SMasahiro Yamada @echo >&2 '***' 71005850719SMasahiro Yamada @/bin/false 7111da177e4SLinus Torvalds 71261277981SUlf Magnusson# The actual configuration files used during the build are stored in 71361277981SUlf Magnusson# include/generated/ and include/config/. Update them if .config is newer than 71461277981SUlf Magnusson# include/config/auto.conf (which mirrors .config). 7159390dff6SMasahiro Yamada# 7169390dff6SMasahiro Yamada# This exploits the 'multi-target pattern rule' trick. 7179390dff6SMasahiro Yamada# The syncconfig should be executed only once to make all the targets. 718f463c351SMasahiro Yamada# (Note: use the grouped target '&:' when we bump to GNU Make 4.3) 719d952cfafSMasahiro Yamada# 720d952cfafSMasahiro Yamada# Do not use $(call cmd,...) here. That would suppress prompts from syncconfig, 721d952cfafSMasahiro Yamada# so you cannot notice that Kconfig is waiting for the user input. 7223044dd05SMasahiro Yamada%/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h: $(KCONFIG_CONFIG) 723d952cfafSMasahiro Yamada $(Q)$(kecho) " SYNC $@" 724d952cfafSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 7252042b548SMasahiro Yamadaelse # !may-sync-config 726d7942413SMasahiro Yamada# External modules and some install targets need include/generated/autoconf.h 727d7942413SMasahiro Yamada# and include/config/auto.conf but do not care if they are up-to-date. 728d7942413SMasahiro Yamada# Use auto.conf to trigger the test 7299ee4e336SSam RavnborgPHONY += include/config/auto.conf 7309ee4e336SSam Ravnborg 7319ee4e336SSam Ravnborginclude/config/auto.conf: 732264a2683SSam Ravnborg $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 7335369f550SMichal Marek echo >&2; \ 7345369f550SMichal Marek echo >&2 " ERROR: Kernel configuration is invalid."; \ 7355369f550SMichal Marek echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 7365369f550SMichal Marek echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 7375369f550SMichal Marek echo >&2 ; \ 7389ee4e336SSam Ravnborg /bin/false) 7399ee4e336SSam Ravnborg 740d7942413SMasahiro Yamadaendif # may-sync-config 7412042b548SMasahiro Yamadaendif # need-config 7421da177e4SLinus Torvalds 743*7d73c3e9SNick DesaulniersKBUILD_CFLAGS += -fno-delete-null-pointer-checks 744ef6000b4SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) 745bd664f6bSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) 746bd664f6bSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) 7476f303d60SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 748a1c48bb1SGeert Uytterhoeven 74915f5db60SMasahiro Yamadaifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 750a0f97e06SSam RavnborgKBUILD_CFLAGS += -O2 75115f5db60SMasahiro Yamadaelse ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 75215f5db60SMasahiro YamadaKBUILD_CFLAGS += -O3 75315f5db60SMasahiro Yamadaelse ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 75415f5db60SMasahiro YamadaKBUILD_CFLAGS += -Os 7551da177e4SLinus Torvaldsendif 7561da177e4SLinus Torvalds 75769102311SJiri Kosina# Tell gcc to never replace conditional load with a non-conditional one 758*7d73c3e9SNick Desaulniersifdef CONFIG_CC_IS_GCC 759*7d73c3e9SNick Desaulniers# gcc-10 renamed --param=allow-store-data-races=0 to 760*7d73c3e9SNick Desaulniers# -fno-allow-store-data-races. 76169102311SJiri KosinaKBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 762b1112139SSergei TrofimovichKBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) 763*7d73c3e9SNick Desaulniersendif 76469102311SJiri Kosina 7651873e870SAndi Kleenifdef CONFIG_READABLE_ASM 7661873e870SAndi Kleen# Disable optimizations that make assembler listings hard to read. 7671873e870SAndi Kleen# reorder blocks reorders the control in the function 7681873e870SAndi Kleen# ipa clone creates specialized cloned functions 7691873e870SAndi Kleen# partial inlining inlines only parts of functions 770*7d73c3e9SNick DesaulniersKBUILD_CFLAGS += -fno-reorder-blocks -fno-ipa-cp-clone -fno-partial-inlining 7711873e870SAndi Kleenendif 7721873e870SAndi Kleen 77308f67461SMike Frysingerifneq ($(CONFIG_FRAME_WARN),0) 774a83e4ca2SMasahiro YamadaKBUILD_CFLAGS += -Wframe-larger-than=$(CONFIG_FRAME_WARN) 77535bb5b1eSAndi Kleenendif 77635bb5b1eSAndi Kleen 777893ab004SMasahiro Yamadastackp-flags-y := -fno-stack-protector 778050e9baaSLinus Torvaldsstackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector 779050e9baaSLinus Torvaldsstackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong 7802a61f474SMasahiro Yamada 7812a61f474SMasahiro YamadaKBUILD_CFLAGS += $(stackp-flags-y) 782e06b8b98SSam Ravnborg 783076f421dSMasahiro Yamadaifdef CONFIG_CC_IS_CLANG 784a1494304SMasahiro YamadaKBUILD_CPPFLAGS += -Qunused-arguments 785a1494304SMasahiro YamadaKBUILD_CFLAGS += -Wno-format-invalid-specifier 786a1494304SMasahiro YamadaKBUILD_CFLAGS += -Wno-gnu 787cfe17c9bSMasahiro Yamada# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the 788cfe17c9bSMasahiro Yamada# source of a reference will be _MergedGlobals and not on of the whitelisted names. 789cfe17c9bSMasahiro Yamada# See modpost pattern 2 790a1494304SMasahiro YamadaKBUILD_CFLAGS += -mno-global-merge 791d936eb23SLinus Torvaldselse 792d936eb23SLinus Torvalds 793d936eb23SLinus Torvalds# Warn about unmarked fall-throughs in switch statement. 794d936eb23SLinus Torvalds# Disabled for clang while comment to attribute conversion happens and 795d936eb23SLinus Torvalds# https://github.com/ClangBuiltLinux/linux/issues/636 is discussed. 796d936eb23SLinus TorvaldsKBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough=5,) 797cfe17c9bSMasahiro Yamadaendif 798cfe17c9bSMasahiro Yamada 799885480b0SNathan Chancellor# These warnings generated too much noise in a regular build. 800885480b0SNathan Chancellor# Use make W=1 to enable them (see scripts/Makefile.extrawarn) 801885480b0SNathan ChancellorKBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 802885480b0SNathan Chancellor 8030a5f4176SSodagudi PrasadKBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) 8041da177e4SLinus Torvaldsifdef CONFIG_FRAME_POINTER 805a0f97e06SSam RavnborgKBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 8061da177e4SLinus Torvaldselse 8077e9501fdSRabin Vincent# Some targets (ARM with Thumb2, for example), can't be built with frame 8087e9501fdSRabin Vincent# pointers. For those, we don't have FUNCTION_TRACER automatically 8097e9501fdSRabin Vincent# select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 8107e9501fdSRabin Vincent# incompatible with -fomit-frame-pointer with current GCC, so we don't use 8117e9501fdSRabin Vincent# -fomit-frame-pointer with FUNCTION_TRACER. 8127e9501fdSRabin Vincentifndef CONFIG_FUNCTION_TRACER 813a0f97e06SSam RavnborgKBUILD_CFLAGS += -fomit-frame-pointer 8141da177e4SLinus Torvaldsendif 8157e9501fdSRabin Vincentendif 8161da177e4SLinus Torvalds 817f0fe00d4Sglider@google.com# Initialize all stack variables with a 0xAA pattern. 818f0fe00d4Sglider@google.comifdef CONFIG_INIT_STACK_ALL_PATTERN 819709a972eSKees CookKBUILD_CFLAGS += -ftrivial-auto-var-init=pattern 820709a972eSKees Cookendif 821709a972eSKees Cook 822f0fe00d4Sglider@google.com# Initialize all stack variables with a zero value. 823f0fe00d4Sglider@google.comifdef CONFIG_INIT_STACK_ALL_ZERO 824f0fe00d4Sglider@google.com# Future support for zero initialization is still being debated, see 825f0fe00d4Sglider@google.com# https://bugs.llvm.org/show_bug.cgi?id=45497. These flags are subject to being 826f0fe00d4Sglider@google.com# renamed or dropped. 827f0fe00d4Sglider@google.comKBUILD_CFLAGS += -ftrivial-auto-var-init=zero 828f0fe00d4Sglider@google.comKBUILD_CFLAGS += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang 829f0fe00d4Sglider@google.comendif 830f0fe00d4Sglider@google.com 83139218ff4SKees Cook# While VLAs have been removed, GCC produces unreachable stack probes 83239218ff4SKees Cook# for the randomize_kstack_offset feature. Disable it for all compilers. 83339218ff4SKees CookKBUILD_CFLAGS += $(call cc-option, -fno-stack-clash-protection) 83439218ff4SKees Cook 835315da87cSMasahiro YamadaDEBUG_CFLAGS := 836315da87cSMasahiro Yamada 837121c5d08SMark Wielaard# Workaround for GCC versions < 5.0 838121c5d08SMark Wielaard# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801 839121c5d08SMark Wielaardifdef CONFIG_CC_IS_GCC 840315da87cSMasahiro YamadaDEBUG_CFLAGS += $(call cc-ifversion, -lt, 0500, $(call cc-option, -fno-var-tracking-assignments)) 841121c5d08SMark Wielaardendif 8422062afb4SLinus Torvalds 8431da177e4SLinus Torvaldsifdef CONFIG_DEBUG_INFO 844695afd3dSSedat Dilek 845866ced95SAndi Kleenifdef CONFIG_DEBUG_INFO_SPLIT 8469d937444SMasahiro YamadaDEBUG_CFLAGS += -gsplit-dwarf 847866ced95SAndi Kleenelse 8481e88e415SMasahiro YamadaDEBUG_CFLAGS += -g 849866ced95SAndi Kleenendif 850695afd3dSSedat Dilek 85152cc02b9SMasahiro Yamadaifndef CONFIG_AS_IS_LLVM 8522288328cSBehan WebsterKBUILD_AFLAGS += -Wa,-gdwarf-2 853b8a90923SNick Desaulniersendif 854695afd3dSSedat Dilek 855a66049e2SNick Desaulniersifndef CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT 856a66049e2SNick Desaulniersdwarf-version-$(CONFIG_DEBUG_INFO_DWARF4) := 4 85798cd6f52SNick Desaulniersdwarf-version-$(CONFIG_DEBUG_INFO_DWARF5) := 5 858a66049e2SNick DesaulniersDEBUG_CFLAGS += -gdwarf-$(dwarf-version-y) 859bfaf2dd3SAndi Kleenendif 8601da177e4SLinus Torvalds 861d6f4ceb7SAndi Kleenifdef CONFIG_DEBUG_INFO_REDUCED 862*7d73c3e9SNick DesaulniersDEBUG_CFLAGS += -fno-var-tracking 863*7d73c3e9SNick Desaulniersifdef CONFIG_CC_IS_GCC 864*7d73c3e9SNick DesaulniersDEBUG_CFLAGS += -femit-struct-debug-baseonly 865*7d73c3e9SNick Desaulniersendif 866d6f4ceb7SAndi Kleenendif 867d6f4ceb7SAndi Kleen 86810e68b02SNick Desaulniersifdef CONFIG_DEBUG_INFO_COMPRESSED 86910e68b02SNick DesaulniersDEBUG_CFLAGS += -gz=zlib 8707b169944SArvind SankarKBUILD_AFLAGS += -gz=zlib 87110e68b02SNick DesaulniersKBUILD_LDFLAGS += --compress-debug-sections=zlib 87210e68b02SNick Desaulniersendif 87310e68b02SNick Desaulniers 874695afd3dSSedat Dilekendif # CONFIG_DEBUG_INFO 875695afd3dSSedat Dilek 8761e88e415SMasahiro YamadaKBUILD_CFLAGS += $(DEBUG_CFLAGS) 8771e88e415SMasahiro Yamadaexport DEBUG_CFLAGS 8781e88e415SMasahiro Yamada 879606576ceSSteven Rostedtifdef CONFIG_FUNCTION_TRACER 8803b15cdc1SSami Tolvanenifdef CONFIG_FTRACE_MCOUNT_USE_CC 88107d04081SVasily Gorbik CC_FLAGS_FTRACE += -mrecord-mcount 8822f4df001SVasily Gorbik ifdef CONFIG_HAVE_NOP_MCOUNT 8832f4df001SVasily Gorbik ifeq ($(call cc-option-yn, -mnop-mcount),y) 8842f4df001SVasily Gorbik CC_FLAGS_FTRACE += -mnop-mcount 8852f4df001SVasily Gorbik CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 8862f4df001SVasily Gorbik endif 8872f4df001SVasily Gorbik endif 88807d04081SVasily Gorbikendif 88922c8542dSSami Tolvanenifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL 89022c8542dSSami Tolvanen CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 89122c8542dSSami Tolvanenendif 8923b15cdc1SSami Tolvanenifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT 8933b15cdc1SSami Tolvanen ifdef CONFIG_HAVE_C_RECORDMCOUNT 8943b15cdc1SSami Tolvanen BUILD_C_RECORDMCOUNT := y 8953b15cdc1SSami Tolvanen export BUILD_C_RECORDMCOUNT 8963b15cdc1SSami Tolvanen endif 8973b15cdc1SSami Tolvanenendif 898a2546faeSSteven Rostedtifdef CONFIG_HAVE_FENTRY 899*7d73c3e9SNick Desaulniers # s390-linux-gnu-gcc did not support -mfentry until gcc-9. 900f28bc3c3SVasily Gorbik ifeq ($(call cc-option-yn, -mfentry),y) 901f28bc3c3SVasily Gorbik CC_FLAGS_FTRACE += -mfentry 902f28bc3c3SVasily Gorbik CC_FLAGS_USING += -DCC_USING_FENTRY 903a2546faeSSteven Rostedt endif 904f28bc3c3SVasily Gorbikendif 905f28bc3c3SVasily Gorbikexport CC_FLAGS_FTRACE 906f28bc3c3SVasily GorbikKBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 907f28bc3c3SVasily GorbikKBUILD_AFLAGS += $(CC_FLAGS_USING) 90816444a8aSArnaldo Carvalho de Meloendif 90916444a8aSArnaldo Carvalho de Melo 91091341d4bSSam Ravnborg# We trigger additional mismatches with less inlining 91191341d4bSSam Ravnborgifdef CONFIG_DEBUG_SECTION_MISMATCH 912*7d73c3e9SNick DesaulniersKBUILD_CFLAGS += -fno-inline-functions-called-once 91391341d4bSSam Ravnborgendif 91491341d4bSSam Ravnborg 91590ad4052SMasahiro Yamadaifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 916e85d1d65SMasahiro YamadaKBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 917e85d1d65SMasahiro YamadaLDFLAGS_vmlinux += --gc-sections 91890ad4052SMasahiro Yamadaendif 91990ad4052SMasahiro Yamada 920d08b9f0cSSami Tolvanenifdef CONFIG_SHADOW_CALL_STACK 921d08b9f0cSSami TolvanenCC_FLAGS_SCS := -fsanitize=shadow-call-stack 922d08b9f0cSSami TolvanenKBUILD_CFLAGS += $(CC_FLAGS_SCS) 923d08b9f0cSSami Tolvanenexport CC_FLAGS_SCS 924d08b9f0cSSami Tolvanenendif 925d08b9f0cSSami Tolvanen 926dc5723b0SSami Tolvanenifdef CONFIG_LTO_CLANG 927dc5723b0SSami Tolvanenifdef CONFIG_LTO_CLANG_THIN 9282b868952SAlexander LobakinCC_FLAGS_LTO := -flto=thin -fsplit-lto-unit 9297f69180bSMasahiro YamadaKBUILD_LDFLAGS += --thinlto-cache-dir=$(extmod_prefix).thinlto-cache 930dc5723b0SSami Tolvanenelse 9312b868952SAlexander LobakinCC_FLAGS_LTO := -flto 932dc5723b0SSami Tolvanenendif 933dc5723b0SSami TolvanenCC_FLAGS_LTO += -fvisibility=hidden 93422d429e7SSami Tolvanen 93522d429e7SSami Tolvanen# Limit inlining across translation units to reduce binary size 93622d429e7SSami TolvanenKBUILD_LDFLAGS += -mllvm -import-instr-limit=5 93724845dcbSNick Desaulniers 9380236526dSTor Vic# Check for frame size exceeding threshold during prolog/epilog insertion 9390236526dSTor Vic# when using lld < 13.0.0. 94024845dcbSNick Desaulniersifneq ($(CONFIG_FRAME_WARN),0) 9410236526dSTor Vicifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 130000; echo $$?),0) 94224845dcbSNick DesaulniersKBUILD_LDFLAGS += -plugin-opt=-warn-stack-size=$(CONFIG_FRAME_WARN) 94324845dcbSNick Desaulniersendif 944dc5723b0SSami Tolvanenendif 9450236526dSTor Vicendif 946dc5723b0SSami Tolvanen 947dc5723b0SSami Tolvanenifdef CONFIG_LTO 9485e95325fSSami TolvanenKBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) 9495e95325fSSami TolvanenKBUILD_AFLAGS += -fno-lto 950dc5723b0SSami Tolvanenexport CC_FLAGS_LTO 951dc5723b0SSami Tolvanenendif 952dc5723b0SSami Tolvanen 953cf68fffbSSami Tolvanenifdef CONFIG_CFI_CLANG 954cf68fffbSSami TolvanenCC_FLAGS_CFI := -fsanitize=cfi \ 955cf68fffbSSami Tolvanen -fsanitize-cfi-cross-dso \ 956cf68fffbSSami Tolvanen -fno-sanitize-cfi-canonical-jump-tables \ 957cf68fffbSSami Tolvanen -fno-sanitize-trap=cfi \ 958cf68fffbSSami Tolvanen -fno-sanitize-blacklist 959cf68fffbSSami Tolvanen 960cf68fffbSSami Tolvanenifdef CONFIG_CFI_PERMISSIVE 961cf68fffbSSami TolvanenCC_FLAGS_CFI += -fsanitize-recover=cfi 962cf68fffbSSami Tolvanenendif 963cf68fffbSSami Tolvanen 964cf68fffbSSami Tolvanen# If LTO flags are filtered out, we must also filter out CFI. 965cf68fffbSSami TolvanenCC_FLAGS_LTO += $(CC_FLAGS_CFI) 966cf68fffbSSami TolvanenKBUILD_CFLAGS += $(CC_FLAGS_CFI) 967cf68fffbSSami Tolvanenexport CC_FLAGS_CFI 968cf68fffbSSami Tolvanenendif 969cf68fffbSSami Tolvanen 970cf536e18SFeng Tangifdef CONFIG_DEBUG_FORCE_FUNCTION_ALIGN_64B 971cf536e18SFeng TangKBUILD_CFLAGS += -falign-functions=64 97209c60546SFeng Tangendif 97309c60546SFeng Tang 974e8e69931SSam Ravnborg# arch Makefile may override CC so keep this after arch Makefile is included 975e08d6de4SMasahiro YamadaNOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 976e8e69931SSam Ravnborg 9771da177e4SLinus Torvalds# warn about C99 declaration after statement 978a33e7ae2SMasahiro YamadaKBUILD_CFLAGS += -Wdeclaration-after-statement 9791da177e4SLinus Torvalds 9800bb95f80SKees Cook# Variable Length Arrays (VLAs) should not be used anywhere in the kernel 9818289f913SMasahiro YamadaKBUILD_CFLAGS += -Wvla 9820bb95f80SKees Cook 983070b98bfSSam Ravnborg# disable pointer signed / unsigned warnings in gcc 4.0 984fb073a4bSMasahiro YamadaKBUILD_CFLAGS += -Wno-pointer-sign 9851da177e4SLinus Torvalds 986217c3e01SStephen Rothwell# disable stringop warnings in gcc 8+ 987217c3e01SStephen RothwellKBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 988217c3e01SStephen Rothwell 9895c45de21SLinus Torvalds# We'll want to enable this eventually, but it's not going away for 5.7 at least 9905c45de21SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) 991*7d73c3e9SNick DesaulniersKBUILD_CFLAGS += -Wno-array-bounds 9925a76021cSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) 9935c45de21SLinus Torvalds 994adc71920SLinus Torvalds# Another good warning that we'll want to enable eventually 995adc71920SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, restrict) 996adc71920SLinus Torvalds 99778a5255fSLinus Torvalds# Enabled with W=2, disabled by default as noisy 998*7d73c3e9SNick Desaulniersifdef CONFIG_CC_IS_GCC 999*7d73c3e9SNick DesaulniersKBUILD_CFLAGS += -Wno-maybe-uninitialized 1000*7d73c3e9SNick Desaulniersendif 100178a5255fSLinus Torvalds 1002fe8d0a41SKirill Smelkov# disable invalid "can't wrap" optimizations for signed / pointers 10038b42cf2fSMasahiro YamadaKBUILD_CFLAGS += -fno-strict-overflow 1004d0115552SLinus Torvalds 10053ce120b1SLinus Torvalds# Make sure -fstack-check isn't enabled (like gentoo apparently did) 10067d4eb0d8SMasahiro YamadaKBUILD_CFLAGS += -fno-stack-check 10073ce120b1SLinus Torvalds 10088f7f5c9fSAndi Kleen# conserve stack if available 1009*7d73c3e9SNick Desaulniersifdef CONFIG_CC_IS_GCC 1010*7d73c3e9SNick DesaulniersKBUILD_CFLAGS += -fconserve-stack 1011*7d73c3e9SNick Desaulniersendif 10128f7f5c9fSAndi Kleen 1013fe7c36c7SJosh Triplett# Prohibit date/time macros, which would make the build non-deterministic 101487de84c9SMasahiro YamadaKBUILD_CFLAGS += -Werror=date-time 1015fe7c36c7SJosh Triplett 1016ea8daa7bSDaniel Wagner# enforce correct pointer usage 1017ea8daa7bSDaniel WagnerKBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) 1018ea8daa7bSDaniel Wagner 1019c834f0e8SKees Cook# Require designated initializers for all marked structures 1020c834f0e8SKees CookKBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 1021c834f0e8SKees Cook 1022a73619a8SMasahiro Yamada# change __FILE__ to the relative path from the srctree 1023a716bd74SDenys ZagoruiKBUILD_CPPFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 1024a73619a8SMasahiro Yamada 1025e0fe0bbeSMasahiro Yamada# include additional Makefiles when needed 1026e0fe0bbeSMasahiro Yamadainclude-y := scripts/Makefile.extrawarn 1027e0fe0bbeSMasahiro Yamadainclude-$(CONFIG_KASAN) += scripts/Makefile.kasan 1028e0fe0bbeSMasahiro Yamadainclude-$(CONFIG_KCSAN) += scripts/Makefile.kcsan 1029e0fe0bbeSMasahiro Yamadainclude-$(CONFIG_UBSAN) += scripts/Makefile.ubsan 1030e0fe0bbeSMasahiro Yamadainclude-$(CONFIG_KCOV) += scripts/Makefile.kcov 1031e0fe0bbeSMasahiro Yamadainclude-$(CONFIG_GCC_PLUGINS) += scripts/Makefile.gcc-plugins 1032e0fe0bbeSMasahiro Yamada 1033e0fe0bbeSMasahiro Yamadainclude $(addprefix $(srctree)/, $(include-y)) 1034a86fe353SMasahiro Yamada 1035132305b3SMasahiro Yamada# scripts/Makefile.gcc-plugins is intentionally included last. 1036132305b3SMasahiro Yamada# Do not add $(call cc-option,...) below this line. When you build the kernel 1037132305b3SMasahiro Yamada# from the clean source tree, the GCC plugins do not exist at this point. 1038bf5438fcSJason Baron 10398cc7af75SMasahiro Yamada# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 10408cc7af75SMasahiro YamadaKBUILD_CPPFLAGS += $(KCPPFLAGS) 10418cc7af75SMasahiro YamadaKBUILD_AFLAGS += $(KAFLAGS) 10428cc7af75SMasahiro YamadaKBUILD_CFLAGS += $(KCFLAGS) 104352bcc330SSam Ravnborg 1044a9684337SBill WendlingKBUILD_LDFLAGS_MODULE += --build-id=sha1 1045a9684337SBill WendlingLDFLAGS_vmlinux += --build-id=sha1 104618991197SRoland McGrath 10475d7d18f5SDavid Howellsifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1048d79a2719SAndi KleenLDFLAGS_vmlinux += $(call ld-option, -X,) 10495d7d18f5SDavid Howellsendif 10505d7d18f5SDavid Howells 10515cf896fbSPeter Collingbourneifeq ($(CONFIG_RELR),y) 105227f2a4dbSNick DesaulniersLDFLAGS_vmlinux += --pack-dyn-relocs=relr --use-android-relr-tags 10535cf896fbSPeter Collingbourneendif 10545cf896fbSPeter Collingbourne 105559612b24SNathan Chancellor# We never want expected sections to be placed heuristically by the 105659612b24SNathan Chancellor# linker. All sections should be explicitly named in the linker script. 105759612b24SNathan Chancellorifdef CONFIG_LD_ORPHAN_WARN 105859612b24SNathan ChancellorLDFLAGS_vmlinux += --orphan-handling=warn 105959612b24SNathan Chancellorendif 106059612b24SNathan Chancellor 10617f3a59dbSMasahiro Yamada# Align the bit size of userspace programs with the kernel 10627f58b487SMasahiro YamadaKBUILD_USERCFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 10637f58b487SMasahiro YamadaKBUILD_USERLDFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 10647f3a59dbSMasahiro Yamada 106580591e61SLuc Van Oostenryck# make the checker run with the right architecture 106680591e61SLuc Van OostenryckCHECKFLAGS += --arch=$(ARCH) 106780591e61SLuc Van Oostenryck 106814516765SLuc Van Oostenryck# insure the checker run with the right endianness 106914516765SLuc Van OostenryckCHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 107014516765SLuc Van Oostenryck 10711f2f01b1SLuc Van Oostenryck# the checker needs the correct machine size 10721f2f01b1SLuc Van OostenryckCHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 10731f2f01b1SLuc Van Oostenryck 10741da177e4SLinus Torvalds# Default kernel image to build when no specific target is given. 10751da177e4SLinus Torvalds# KBUILD_IMAGE may be overruled on the command line or 10761da177e4SLinus Torvalds# set in the environment 10771da177e4SLinus Torvalds# Also any assignments in arch/$(ARCH)/Makefile take precedence over 10781da177e4SLinus Torvalds# this default value 10791da177e4SLinus Torvaldsexport KBUILD_IMAGE ?= vmlinux 10801da177e4SLinus Torvalds 10811da177e4SLinus Torvalds# 10821da177e4SLinus Torvalds# INSTALL_PATH specifies where to place the updated kernel and system map 10831da177e4SLinus Torvalds# images. Default is /boot, but you can set it to other values 10841da177e4SLinus Torvaldsexport INSTALL_PATH ?= /boot 10851da177e4SLinus Torvalds 10861da177e4SLinus Torvalds# 1087f4d4ffc0SJason Cooper# INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1088f4d4ffc0SJason Cooper# Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1089f4d4ffc0SJason Cooper# an argument if needed. Otherwise it defaults to the kernel install path 1090f4d4ffc0SJason Cooper# 1091f4d4ffc0SJason Cooperexport INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1092f4d4ffc0SJason Cooper 1093f4d4ffc0SJason Cooper# 10941da177e4SLinus Torvalds# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 10951da177e4SLinus Torvalds# relocations required by build roots. This is not defined in the 1096070b98bfSSam Ravnborg# makefile but the argument can be passed to make if needed. 10971da177e4SLinus Torvalds# 10981da177e4SLinus Torvalds 1099df9df036SSam RavnborgMODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 11001da177e4SLinus Torvaldsexport MODLIB 11011da177e4SLinus Torvalds 1102e00d8880SMasahiro YamadaPHONY += prepare0 1103e2a666d5SRusty Russell 1104ccae4cfaSMasahiro Yamadaexport extmod_prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/) 11057f69180bSMasahiro Yamadaexport MODORDER := $(extmod_prefix)modules.order 11067f69180bSMasahiro Yamadaexport MODULES_NSDEPS := $(extmod_prefix)modules.nsdeps 110747801c97SMasahiro Yamada 11081da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 1109cfc411e7SDavid Howellscore-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ 11101da177e4SLinus Torvalds 111123febe37SMasahiro Yamadavmlinux-dirs := $(patsubst %/,%,$(filter %/, \ 11121da177e4SLinus Torvalds $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 111395fb6317SMasahiro Yamada $(libs-y) $(libs-m))) 11141da177e4SLinus Torvalds 11151eaca4b9SMasahiro Yamadavmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \ 111623febe37SMasahiro Yamada $(patsubst %/,%,$(filter %/, $(core-) \ 111795fb6317SMasahiro Yamada $(drivers-) $(libs-)))) 11181da177e4SLinus Torvalds 1119b2c88554SMasahiro Yamadasubdir-modorder := $(addsuffix modules.order,$(filter %/, \ 1120b2c88554SMasahiro Yamada $(core-y) $(core-m) $(libs-y) $(libs-m) \ 1121b2c88554SMasahiro Yamada $(drivers-y) $(drivers-m))) 11221da177e4SLinus Torvalds 1123c99f3918SMasahiro Yamadabuild-dirs := $(vmlinux-dirs) 112476cd306dSMasahiro Yamadaclean-dirs := $(vmlinux-alldirs) 1125c99f3918SMasahiro Yamada 11261f2bfbd0SSam Ravnborg# Externally visible symbols (used by link-vmlinux.sh) 1127f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS := $(head-y) $(patsubst %/,%/built-in.a, $(core-y)) 1128f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS += $(addsuffix built-in.a, $(filter %/, $(libs-y))) 1129f0d50ca0SMasahiro Yamadaifdef CONFIG_MODULES 1130f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y))) 1131f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y)) 1132f0d50ca0SMasahiro Yamadaelse 1133f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y)) 1134f0d50ca0SMasahiro Yamadaendif 1135f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y)) 1136f0d50ca0SMasahiro Yamada 1137f0d50ca0SMasahiro Yamadaexport KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS 113895698570SSam Ravnborgexport KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 113985f0ae7eSMasahiro Yamada# used by scripts/Makefile.package 1140233c741dSMasahiro Yamadaexport KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools) 11411da177e4SLinus Torvalds 1142d151e971SMasahiro Yamadavmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) 11431da177e4SLinus Torvalds 11443fdc7d3fSMasahiro Yamada# Recurse until adjust_autoksyms.sh is satisfied 11453fdc7d3fSMasahiro YamadaPHONY += autoksyms_recursive 11462441e78bSNicolas Pitreifdef CONFIG_TRIM_UNUSED_KSYMS 11471f50b80aSMasahiro Yamada# For the kernel to actually contain only the needed exported symbols, 11481f50b80aSMasahiro Yamada# we have to build modules as well to determine what those symbols are. 11491f50b80aSMasahiro Yamada# (this can be evaluated only once include/config/auto.conf has been included) 11501f50b80aSMasahiro YamadaKBUILD_MODULES := 1 1151fb2d99beSMasahiro Yamada 1152fb2d99beSMasahiro Yamadaautoksyms_recursive: descend modules.order 1153fb2d99beSMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ 1154fb2d99beSMasahiro Yamada "$(MAKE) -f $(srctree)/Makefile vmlinux" 11551f50b80aSMasahiro Yamadaendif 11561f50b80aSMasahiro Yamada 115707a422bbSMasahiro Yamadaautoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) 115807a422bbSMasahiro Yamada 115988694cffSQuentin Perretquiet_cmd_autoksyms_h = GEN $@ 116088694cffSQuentin Perret cmd_autoksyms_h = mkdir -p $(dir $@); \ 116188694cffSQuentin Perret $(CONFIG_SHELL) $(srctree)/scripts/gen_autoksyms.sh $@ 116288694cffSQuentin Perret 116307a422bbSMasahiro Yamada$(autoksyms_h): 116488694cffSQuentin Perret $(call cmd,autoksyms_h) 116523121ca2SNicolas Pitre 1166fbe6e37dSNicholas PigginARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) 1167fbe6e37dSNicholas Piggin 1168fbe6e37dSNicholas Piggin# Final link of vmlinux with optional arch pass after final link 1169fbe6e37dSNicholas Piggincmd_link-vmlinux = \ 11703ec8a5b3SMasahiro Yamada $(CONFIG_SHELL) $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \ 1171fbe6e37dSNicholas Piggin $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 11722441e78bSNicolas Pitre 11733fdc7d3fSMasahiro Yamadavmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE 11740b956e20SRasmus Villemoes +$(call if_changed_dep,link-vmlinux) 1175741f98feSSam Ravnborg 1176392885eeSMasahiro Yamadatargets := vmlinux 1177392885eeSMasahiro Yamada 11781da177e4SLinus Torvalds# The actual objects are generated when descending, 11791da177e4SLinus Torvalds# make sure no implicit rule kicks in 1180b2c88554SMasahiro Yamada$(sort $(vmlinux-deps) $(subdir-modorder)): descend ; 11811da177e4SLinus Torvalds 1182ba97df45SMasahiro Yamadafilechk_kernel.release = \ 11830d0e7718SMichal Marek echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 11840d0e7718SMichal Marek 118583a35e36SGeert Uytterhoeven# Store (new) KERNELRELEASE string in include/config/kernel.release 118624512795SMasahiro Yamadainclude/config/kernel.release: FORCE 11870d0e7718SMichal Marek $(call filechk,kernel.release) 1188cb58455cSSam Ravnborg 1189d8821622SMasahiro Yamada# Additional helpers built in scripts/ 1190d8821622SMasahiro Yamada# Carefully list dependencies so we do not try to build scripts twice 1191d8821622SMasahiro Yamada# in parallel 1192d8821622SMasahiro YamadaPHONY += scripts 119360df1aeeSMasahiro Yamadascripts: scripts_basic scripts_dtc 1194d8821622SMasahiro Yamada $(Q)$(MAKE) $(build)=$(@) 1195cb58455cSSam Ravnborg 11961da177e4SLinus Torvalds# Things we need to do before we recursively start building the kernel 11975bb78269SSam Ravnborg# or the modules are listed in "prepare". 11985bb78269SSam Ravnborg# A multi level approach is used. prepareN is processed before prepareN-1. 11995bb78269SSam Ravnborg# archprepare is used in arch Makefiles and when processed asm symlink, 12005bb78269SSam Ravnborg# version.h and scripts_basic is processed / created. 12011da177e4SLinus Torvalds 1202a5139fb3SMasahiro YamadaPHONY += prepare archprepare 12035bb78269SSam Ravnborg 120436de077bSMasahiro Yamadaarchprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \ 12053044dd05SMasahiro Yamada asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h \ 12061476fee5SMasahiro Yamada include/generated/autoconf.h remove-stale-files 12075bb78269SSam Ravnborg 120865bba042SMasahiro Yamadaprepare0: archprepare 120960df1aeeSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts/mod 12108d36a623SSam Ravnborg $(Q)$(MAKE) $(build)=. 121186feeaa8SSam Ravnborg 12121da177e4SLinus Torvalds# All the preparing.. 12130d989ac2SMasahiro Yamadaprepare: prepare0 1214b9ab5ebbSJosh Poimboeuf 12151476fee5SMasahiro YamadaPHONY += remove-stale-files 12161476fee5SMasahiro Yamadaremove-stale-files: 12171476fee5SMasahiro Yamada $(Q)$(srctree)/scripts/remove-stale-files 12181476fee5SMasahiro Yamada 12192c1f4f12SMasahiro Yamada# Support for using generic headers in asm-generic 12207d0e5c20SMasahiro Yamadaasm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj 12217d0e5c20SMasahiro Yamada 12222c1f4f12SMasahiro YamadaPHONY += asm-generic uapi-asm-generic 12232c1f4f12SMasahiro Yamadaasm-generic: uapi-asm-generic 1224037fc336SMasahiro Yamada $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \ 1225037fc336SMasahiro Yamada generic=include/asm-generic 12262c1f4f12SMasahiro Yamadauapi-asm-generic: 1227037fc336SMasahiro Yamada $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \ 1228037fc336SMasahiro Yamada generic=include/uapi/asm-generic 12292c1f4f12SMasahiro Yamada 12301da177e4SLinus Torvalds# Generate some files 12311da177e4SLinus Torvalds# --------------------------------------------------------------------------- 12321da177e4SLinus Torvalds 12331da177e4SLinus Torvalds# KERNELRELEASE can change from a few different places, meaning version.h 12341da177e4SLinus Torvalds# needs to be updated, so this check is forced on all builds 12351da177e4SLinus Torvalds 12361da177e4SLinus Torvaldsuts_len := 64 123763104eecSSam Ravnborgdefine filechk_utsrelease.h 12381da177e4SLinus Torvalds if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 12391da177e4SLinus Torvalds echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 12401da177e4SLinus Torvalds exit 1; \ 12411da177e4SLinus Torvalds fi; \ 1242ad774086SMasahiro Yamada echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" 12431da177e4SLinus Torvaldsendef 12441da177e4SLinus Torvalds 124563104eecSSam Ravnborgdefine filechk_version.h 12469b82f13eSSasha Levin if [ $(SUBLEVEL) -gt 255 ]; then \ 1247ad774086SMasahiro Yamada echo \#define LINUX_VERSION_CODE $(shell \ 1248207da4c8SMasahiro Yamada expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + 255); \ 12499b82f13eSSasha Levin else \ 12509b82f13eSSasha Levin echo \#define LINUX_VERSION_CODE $(shell \ 1251207da4c8SMasahiro Yamada expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 12529b82f13eSSasha Levin fi; \ 12539b82f13eSSasha Levin echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + \ 125488a68672SSasha Levin ((c) > 255 ? 255 : (c)))'; \ 125588a68672SSasha Levin echo \#define LINUX_VERSION_MAJOR $(VERSION); \ 125688a68672SSasha Levin echo \#define LINUX_VERSION_PATCHLEVEL $(PATCHLEVEL); \ 125788a68672SSasha Levin echo \#define LINUX_VERSION_SUBLEVEL $(SUBLEVEL) 125863104eecSSam Ravnborgendef 125963104eecSSam Ravnborg 1260207da4c8SMasahiro Yamada$(version_h): PATCHLEVEL := $(if $(PATCHLEVEL), $(PATCHLEVEL), 0) 1261207da4c8SMasahiro Yamada$(version_h): SUBLEVEL := $(if $(SUBLEVEL), $(SUBLEVEL), 0) 126243fee2b2SMasahiro Yamada$(version_h): FORCE 12631da177e4SLinus Torvalds $(call filechk,version.h) 12641da177e4SLinus Torvalds 1265273b281fSSam Ravnborginclude/generated/utsrelease.h: include/config/kernel.release FORCE 126663104eecSSam Ravnborg $(call filechk,utsrelease.h) 126763104eecSSam Ravnborg 1268179efcb4SVegard NossumPHONY += headerdep 1269179efcb4SVegard Nossumheaderdep: 12709663d989SPeter Foley $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 12719663d989SPeter Foley $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1272179efcb4SVegard Nossum 12731da177e4SLinus Torvalds# --------------------------------------------------------------------------- 12748d730cfbSDavid Woodhouse# Kernel headers 12758d730cfbSDavid Woodhouse 1276e6883b18SSam Ravnborg#Default location for installed headers 1277e6883b18SSam Ravnborgexport INSTALL_HDR_PATH = $(objtree)/usr 1278e6883b18SSam Ravnborg 127959b2bd05SMasahiro Yamadaquiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include 128059b2bd05SMasahiro Yamada cmd_headers_install = \ 128159b2bd05SMasahiro Yamada mkdir -p $(INSTALL_HDR_PATH); \ 128259b2bd05SMasahiro Yamada rsync -mrl --include='*/' --include='*\.h' --exclude='*' \ 128359b2bd05SMasahiro Yamada usr/include $(INSTALL_HDR_PATH) 12846d716275SDavid Woodhouse 12858d730cfbSDavid WoodhousePHONY += headers_install 128659b2bd05SMasahiro Yamadaheaders_install: headers 128759b2bd05SMasahiro Yamada $(call cmd,headers_install) 12884f193362SPaul Smith 12891da177e4SLinus TorvaldsPHONY += archheaders archscripts 12901da177e4SLinus Torvalds 1291a5bae54cSMasahiro Yamadahdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj 12921da177e4SLinus Torvalds 129359b2bd05SMasahiro YamadaPHONY += headers 129459b2bd05SMasahiro Yamadaheaders: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts 12959d022c54SMasahiro Yamada $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ 12962fb9b1bdSSam Ravnborg $(error Headers not exportable for the $(SRCARCH) architecture)) 1297d5470d14SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=include/uapi 1298d5470d14SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi 12991f85712eSMike Frysinger 13007ecaf069SMasahiro Yamada# Deprecated. It is no-op now. 130168475359SDavid WoodhousePHONY += headers_check 13027ecaf069SMasahiro Yamadaheaders_check: 1303609bbb4dSMasahiro Yamada @echo >&2 "=================== WARNING ===================" 1304609bbb4dSMasahiro Yamada @echo >&2 "Since Linux 5.5, 'make headers_check' is no-op," 1305609bbb4dSMasahiro Yamada @echo >&2 "and will be removed after Linux 5.15 release." 1306609bbb4dSMasahiro Yamada @echo >&2 "Please remove headers_check from your scripts." 1307609bbb4dSMasahiro Yamada @echo >&2 "===============================================" 130868475359SDavid Woodhouse 1309e949f4c2SMasahiro Yamadaifdef CONFIG_HEADERS_INSTALL 131059b2bd05SMasahiro Yamadaprepare: headers 1311e949f4c2SMasahiro Yamadaendif 13121da177e4SLinus Torvalds 1313bdd7714bSMasahiro YamadaPHONY += scripts_unifdef 1314bdd7714bSMasahiro Yamadascripts_unifdef: scripts_basic 1315bdd7714bSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1316bdd7714bSMasahiro Yamada 13171da177e4SLinus Torvalds# --------------------------------------------------------------------------- 131814ccc638SMasahiro Yamada# Install 131914ccc638SMasahiro Yamada 132014ccc638SMasahiro Yamada# Many distributions have the custom install script, /sbin/installkernel. 132114ccc638SMasahiro Yamada# If DKMS is installed, 'make install' will eventually recuses back 132214ccc638SMasahiro Yamada# to the this Makefile to build and install external modules. 132314ccc638SMasahiro Yamada# Cancel sub_make_done so that options such as M=, V=, etc. are parsed. 132414ccc638SMasahiro Yamada 132514ccc638SMasahiro Yamadainstall: sub_make_done := 132614ccc638SMasahiro Yamada 132714ccc638SMasahiro Yamada# --------------------------------------------------------------------------- 13281bb0b18aSMasahiro Yamada# Tools 13291bb0b18aSMasahiro Yamada 13300d989ac2SMasahiro Yamadaifdef CONFIG_STACK_VALIDATION 13310d989ac2SMasahiro Yamadaprepare: tools/objtool 13320d989ac2SMasahiro Yamadaendif 13330d989ac2SMasahiro Yamada 13340d989ac2SMasahiro Yamadaifdef CONFIG_BPF 13350d989ac2SMasahiro Yamadaifdef CONFIG_DEBUG_INFO_BTF 13360d989ac2SMasahiro Yamadaprepare: tools/bpf/resolve_btfids 13370d989ac2SMasahiro Yamadaendif 13380d989ac2SMasahiro Yamadaendif 13390d989ac2SMasahiro Yamada 13400d989ac2SMasahiro YamadaPHONY += resolve_btfids_clean 13410d989ac2SMasahiro Yamada 13420d989ac2SMasahiro Yamadaresolve_btfids_O = $(abspath $(objtree))/tools/bpf/resolve_btfids 13430d989ac2SMasahiro Yamada 13440d989ac2SMasahiro Yamada# tools/bpf/resolve_btfids directory might not exist 13450d989ac2SMasahiro Yamada# in output directory, skip its clean in that case 13460d989ac2SMasahiro Yamadaresolve_btfids_clean: 13470d989ac2SMasahiro Yamadaifneq ($(wildcard $(resolve_btfids_O)),) 13480d989ac2SMasahiro Yamada $(Q)$(MAKE) -sC $(srctree)/tools/bpf/resolve_btfids O=$(resolve_btfids_O) clean 13490d989ac2SMasahiro Yamadaendif 13500d989ac2SMasahiro Yamada 13511bb0b18aSMasahiro Yamada# Clear a bunch of variables before executing the submake 13521bb0b18aSMasahiro Yamadaifeq ($(quiet),silent_) 13531bb0b18aSMasahiro Yamadatools_silent=s 13541bb0b18aSMasahiro Yamadaendif 13551bb0b18aSMasahiro Yamada 13561bb0b18aSMasahiro Yamadatools/: FORCE 13571bb0b18aSMasahiro Yamada $(Q)mkdir -p $(objtree)/tools 13581bb0b18aSMasahiro Yamada $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ 13591bb0b18aSMasahiro Yamada 13601bb0b18aSMasahiro Yamadatools/%: FORCE 13611bb0b18aSMasahiro Yamada $(Q)mkdir -p $(objtree)/tools 13621bb0b18aSMasahiro Yamada $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ $* 13631bb0b18aSMasahiro Yamada 13641bb0b18aSMasahiro Yamada# --------------------------------------------------------------------------- 13655a5da78bSShuah Khan# Kernel selftest 13665a5da78bSShuah Khan 13675a5da78bSShuah KhanPHONY += kselftest 13685a5da78bSShuah Khankselftest: 13692bc84526SShuah Khan $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 13705a5da78bSShuah Khan 137117eac6c2SShuah Khankselftest-%: FORCE 137217eac6c2SShuah Khan $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $* 1373dcb825a9SWang Long 13743d6dee7aSBamvor Jian ZhangPHONY += kselftest-merge 13753d6dee7aSBamvor Jian Zhangkselftest-merge: 13763d6dee7aSBamvor Jian Zhang $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 13776d3db46cSDan Rue $(Q)find $(srctree)/tools/testing/selftests -name config | \ 13786d3db46cSDan Rue xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config 13793e4c6948SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 13803d6dee7aSBamvor Jian Zhang 13815a5da78bSShuah Khan# --------------------------------------------------------------------------- 138237c8a5faSRob Herring# Devicetree files 138337c8a5faSRob Herring 138437c8a5faSRob Herringifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 138537c8a5faSRob Herringdtstree := arch/$(SRCARCH)/boot/dts 138637c8a5faSRob Herringendif 138737c8a5faSRob Herring 138837c8a5faSRob Herringifneq ($(dtstree),) 138937c8a5faSRob Herring 1390a5139fb3SMasahiro Yamada%.dtb: include/config/kernel.release scripts_dtc 139137c8a5faSRob Herring $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 139237c8a5faSRob Herring 1393ce88c9c7SViresh Kumar%.dtbo: include/config/kernel.release scripts_dtc 1394ce88c9c7SViresh Kumar $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1395ce88c9c7SViresh Kumar 1396c473a8d0SMasahiro YamadaPHONY += dtbs dtbs_install dtbs_check 1397b5154bf6SMasahiro Yamadadtbs: include/config/kernel.release scripts_dtc 139837c8a5faSRob Herring $(Q)$(MAKE) $(build)=$(dtstree) 139937c8a5faSRob Herring 1400b5154bf6SMasahiro Yamadaifneq ($(filter dtbs_check, $(MAKECMDGOALS)),) 1401e10c4321SMasahiro Yamadaexport CHECK_DTBS=y 1402b5154bf6SMasahiro Yamadadtbs: dt_binding_check 1403b5154bf6SMasahiro Yamadaendif 1404b5154bf6SMasahiro Yamada 1405b5154bf6SMasahiro Yamadadtbs_check: dtbs 14064f0e3a57SRob Herring 140737c8a5faSRob Herringdtbs_install: 14082431f22aSMasahiro Yamada $(Q)$(MAKE) $(dtbinst)=$(dtstree) dst=$(INSTALL_DTBS_PATH) 140937c8a5faSRob Herring 141037c8a5faSRob Herringifdef CONFIG_OF_EARLY_FLATTREE 141137c8a5faSRob Herringall: dtbs 141237c8a5faSRob Herringendif 141337c8a5faSRob Herring 141437c8a5faSRob Herringendif 141537c8a5faSRob Herring 141637c8a5faSRob HerringPHONY += scripts_dtc 141737c8a5faSRob Herringscripts_dtc: scripts_basic 141837c8a5faSRob Herring $(Q)$(MAKE) $(build)=scripts/dtc 141937c8a5faSRob Herring 1420e10c4321SMasahiro Yamadaifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),) 1421e10c4321SMasahiro Yamadaexport CHECK_DT_BINDING=y 1422e10c4321SMasahiro Yamadaendif 1423e10c4321SMasahiro Yamada 1424c473a8d0SMasahiro YamadaPHONY += dt_binding_check 14254f0e3a57SRob Herringdt_binding_check: scripts_dtc 14264f0e3a57SRob Herring $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings 14274f0e3a57SRob Herring 142837c8a5faSRob Herring# --------------------------------------------------------------------------- 14291da177e4SLinus Torvalds# Modules 14301da177e4SLinus Torvalds 14311da177e4SLinus Torvaldsifdef CONFIG_MODULES 14321da177e4SLinus Torvalds 14331da177e4SLinus Torvalds# By default, build modules as well 14341da177e4SLinus Torvalds 143573d1393eSMichal Marekall: modules 14361da177e4SLinus Torvalds 14374b50c8c4SMasahiro Yamada# When we're building modules with modversions, we need to consider 14384b50c8c4SMasahiro Yamada# the built-in objects during the descend as well, in order to 14394b50c8c4SMasahiro Yamada# make sure the checksums are up to date before we record them. 14404b50c8c4SMasahiro Yamadaifdef CONFIG_MODVERSIONS 14414b50c8c4SMasahiro Yamada KBUILD_BUILTIN := 1 14424b50c8c4SMasahiro Yamadaendif 14434b50c8c4SMasahiro Yamada 14441da177e4SLinus Torvalds# Build modules 1445551559e1STejun Heo# 1446551559e1STejun Heo# A module can be listed more than once in obj-m resulting in 1447551559e1STejun Heo# duplicate lines in modules.order files. Those are removed 1448551559e1STejun Heo# using awk while concatenating to the final file. 14491da177e4SLinus Torvalds 14504f193362SPaul SmithPHONY += modules 1451596b0474SMasahiro Yamadamodules: $(if $(KBUILD_BUILTIN),vmlinux) modules_check modules_prepare 14521da177e4SLinus Torvalds 1453b2c88554SMasahiro Yamadacmd_modules_order = $(AWK) '!x[$$0]++' $(real-prereqs) > $@ 1454b2c88554SMasahiro Yamada 1455b2c88554SMasahiro Yamadamodules.order: $(subdir-modorder) FORCE 1456b2c88554SMasahiro Yamada $(call if_changed,modules_order) 1457b2c88554SMasahiro Yamada 1458b2c88554SMasahiro Yamadatargets += modules.order 1459a6c36632SMichal Marek 14601da177e4SLinus Torvalds# Target to prepare building external modules 14614f193362SPaul SmithPHONY += modules_prepare 1462059bc9fcSMasahiro Yamadamodules_prepare: prepare 1463596b0474SMasahiro Yamada $(Q)$(MAKE) $(build)=scripts scripts/module.lds 14641da177e4SLinus Torvalds 1465961ab4a3SMasahiro Yamadaexport modules_sign_only := 14661da177e4SLinus Torvalds 1467961ab4a3SMasahiro Yamadaifeq ($(CONFIG_MODULE_SIG),y) 1468961ab4a3SMasahiro YamadaPHONY += modules_sign 1469961ab4a3SMasahiro Yamadamodules_sign: modules_install 1470961ab4a3SMasahiro Yamada @: 1471961ab4a3SMasahiro Yamada 1472961ab4a3SMasahiro Yamada# modules_sign is a subset of modules_install. 1473961ab4a3SMasahiro Yamada# 'make modules_install modules_sign' is equivalent to 'make modules_install'. 1474961ab4a3SMasahiro Yamadaifeq ($(filter modules_install,$(MAKECMDGOALS)),) 1475961ab4a3SMasahiro Yamadamodules_sign_only := y 1476961ab4a3SMasahiro Yamadaendif 1477961ab4a3SMasahiro Yamadaendif 1478961ab4a3SMasahiro Yamada 1479961ab4a3SMasahiro Yamadamodinst_pre := 1480961ab4a3SMasahiro Yamadaifneq ($(filter modules_install,$(MAKECMDGOALS)),) 1481961ab4a3SMasahiro Yamadamodinst_pre := __modinst_pre 1482961ab4a3SMasahiro Yamadaendif 1483961ab4a3SMasahiro Yamada 1484961ab4a3SMasahiro Yamadamodules_install: $(modinst_pre) 14853e3005dfSMasahiro YamadaPHONY += __modinst_pre 14863e3005dfSMasahiro Yamada__modinst_pre: 14871da177e4SLinus Torvalds @rm -rf $(MODLIB)/kernel 14881da177e4SLinus Torvalds @rm -f $(MODLIB)/source 14891da177e4SLinus Torvalds @mkdir -p $(MODLIB)/kernel 14908e9b4667SMasahiro Yamada @ln -s $(abspath $(srctree)) $(MODLIB)/source 14911da177e4SLinus Torvalds @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 14921da177e4SLinus Torvalds rm -f $(MODLIB)/build ; \ 14937e1c0477SMichal Marek ln -s $(CURDIR) $(MODLIB)/build ; \ 14941da177e4SLinus Torvalds fi 14951bd9a468SMasahiro Yamada @sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order 14962c6d9636SMasahiro Yamada @cp -f modules.builtin $(MODLIB)/ 14972c6d9636SMasahiro Yamada @cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/ 14981da177e4SLinus Torvalds 14991da177e4SLinus Torvaldsendif # CONFIG_MODULES 15001da177e4SLinus Torvalds 15011da177e4SLinus Torvalds### 15021da177e4SLinus Torvalds# Cleaning is done on three levels. 15031da177e4SLinus Torvalds# make clean Delete most generated files 15041da177e4SLinus Torvalds# Leave enough to build external modules 15051da177e4SLinus Torvalds# make mrproper Delete the current configuration, and all generated files 15061da177e4SLinus Torvalds# make distclean Remove editor backup files, patch leftover files and the like 15071da177e4SLinus Torvalds 15081da177e4SLinus Torvalds# Directories & files removed with 'make clean' 150969bc8d38SMasahiro YamadaCLEAN_FILES += include/ksym vmlinux.symvers modules-only.symvers \ 15103d32285fSMasahiro Yamada modules.builtin modules.builtin.modinfo modules.nsdeps \ 15114c7858b9SMasahiro Yamada compile_commands.json .thinlto-cache 15121da177e4SLinus Torvalds 15131da177e4SLinus Torvalds# Directories & files removed with 'make mrproper' 15140663c68cSMasahiro YamadaMRPROPER_FILES += include/config include/generated \ 151546a63d4bSMasahiro Yamada arch/$(SRCARCH)/include/generated .tmp_objdiff \ 15160663c68cSMasahiro Yamada debian snap tar-install \ 15170663c68cSMasahiro Yamada .config .config.old .version \ 151846457133SMasahiro Yamada Module.symvers \ 1519b31f2a49SNayna Jain certs/signing_key.pem certs/signing_key.x509 \ 1520b31f2a49SNayna Jain certs/x509.genkey \ 1521b31f2a49SNayna Jain vmlinux-gdb.py \ 152246a63d4bSMasahiro Yamada *.spec 15231da177e4SLinus Torvalds 15241da177e4SLinus Torvalds# clean - Delete most, but leave enough to build external modules 15251da177e4SLinus Torvalds# 15261da177e4SLinus Torvaldsclean: rm-files := $(CLEAN_FILES) 15271da177e4SLinus Torvalds 152876cd306dSMasahiro YamadaPHONY += archclean vmlinuxclean 15291da177e4SLinus Torvalds 1530bd1ee804SPawel Mollvmlinuxclean: 1531bd1ee804SPawel Moll $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1532fbe6e37dSNicholas Piggin $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1533bd1ee804SPawel Moll 153450d3a3f8SJiri Olsaclean: archclean vmlinuxclean resolve_btfids_clean 15351da177e4SLinus Torvalds 15361da177e4SLinus Torvalds# mrproper - Delete all generated files, including .config 15371da177e4SLinus Torvalds# 15381da177e4SLinus Torvaldsmrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1539cb43fb57SMauro Carvalho Chehabmrproper-dirs := $(addprefix _mrproper_,scripts) 15401da177e4SLinus Torvalds 1541b421b8a6SMasahiro YamadaPHONY += $(mrproper-dirs) mrproper 15421da177e4SLinus Torvalds$(mrproper-dirs): 15431da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 15441da177e4SLinus Torvalds 1545b421b8a6SMasahiro Yamadamrproper: clean $(mrproper-dirs) 15461da177e4SLinus Torvalds $(call cmd,rmfiles) 15471da177e4SLinus Torvalds 15481da177e4SLinus Torvalds# distclean 15491da177e4SLinus Torvalds# 15504f193362SPaul SmithPHONY += distclean 15511da177e4SLinus Torvalds 15521da177e4SLinus Torvaldsdistclean: mrproper 155319c8d912SMasahiro Yamada @find . $(RCS_FIND_IGNORE) \ 15541da177e4SLinus Torvalds \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1555f78271dfSMasahiro Yamada -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 15567a02cec5SMasahiro Yamada -o -name 'core' -o -name tags -o -name TAGS -o -name 'cscope*' \ 15577a02cec5SMasahiro Yamada -o -name GPATH -o -name GRTAGS -o -name GSYMS -o -name GTAGS \) \ 15581da177e4SLinus Torvalds -type f -print | xargs rm -f 15591da177e4SLinus Torvalds 15601da177e4SLinus Torvalds 15611da177e4SLinus Torvalds# Packaging of the kernel to various formats 15621da177e4SLinus Torvalds# --------------------------------------------------------------------------- 15631da177e4SLinus Torvalds 1564bafb6747SArnaldo Carvalho de Melo%src-pkg: FORCE 1565000ec95fSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1566031ecc6dSZach Brown%pkg: include/config/kernel.release FORCE 1567000ec95fSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 15681da177e4SLinus Torvalds 15691da177e4SLinus Torvalds# Brief documentation of the typical targets used 15701da177e4SLinus Torvalds# --------------------------------------------------------------------------- 15711da177e4SLinus Torvalds 15725dffbe81SSegher Boessenkoolboards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1573a1e7b7bbSKonstantin Khlebnikovboards := $(sort $(notdir $(boards))) 15745dffbe81SSegher Boessenkoolboard-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 15755dffbe81SSegher Boessenkoolboard-dirs := $(sort $(notdir $(board-dirs:/=))) 15761da177e4SLinus Torvalds 1577fe69b420SMasahiro YamadaPHONY += help 15781da177e4SLinus Torvaldshelp: 15791da177e4SLinus Torvalds @echo 'Cleaning targets:' 15805ea084efSSamuel Tardieu @echo ' clean - Remove most generated files but keep the config and' 15815cc8d246SJesper Juhl @echo ' enough build support to build external modules' 15825ea084efSSamuel Tardieu @echo ' mrproper - Remove all generated files + config + various backup files' 15835cc8d246SJesper Juhl @echo ' distclean - mrproper + remove editor backup and patch files' 15841da177e4SLinus Torvalds @echo '' 15851da177e4SLinus Torvalds @echo 'Configuration targets:' 15861da177e4SLinus Torvalds @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 15871da177e4SLinus Torvalds @echo '' 15881da177e4SLinus Torvalds @echo 'Other generic targets:' 15891da177e4SLinus Torvalds @echo ' all - Build all targets marked with [*]' 15901da177e4SLinus Torvalds @echo '* vmlinux - Build the bare kernel' 15911da177e4SLinus Torvalds @echo '* modules - Build all modules' 15929cc5d74cSBodo Eggert @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 15931da177e4SLinus Torvalds @echo ' dir/ - Build all files in dir and below' 159440ab87a4SWang YanQing @echo ' dir/file.[ois] - Build specified target only' 1595433db3e2SVinÃcius Tinti @echo ' dir/file.ll - Build the LLVM assembly file' 1596433db3e2SVinÃcius Tinti @echo ' (requires compiler support for LLVM assembly generation)' 159762718979SJoe Perches @echo ' dir/file.lst - Build specified mixed source/assembly target only' 159862718979SJoe Perches @echo ' (requires a recent binutils and recent build (System.map))' 1599155ad605SSam Ravnborg @echo ' dir/file.ko - Build module including final link' 1600c4d5ee67SRobert P. J. Day @echo ' modules_prepare - Set up for building external modules' 16011da177e4SLinus Torvalds @echo ' tags/TAGS - Generate tags file for editors' 16021da177e4SLinus Torvalds @echo ' cscope - Generate cscope index' 1603f4ed1009SJianbin Kang @echo ' gtags - Generate GNU GLOBAL index' 16043f1d9a6cSMichal Marek @echo ' kernelrelease - Output the release version string (use with make -s)' 16053f1d9a6cSMichal Marek @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 16063f1d9a6cSMichal Marek @echo ' image_name - Output the image name (use with make -s)' 16072fb9b1bdSSam Ravnborg @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 160859df3230SGeert Uytterhoeven echo ' (default: $(INSTALL_HDR_PATH))'; \ 16092fb9b1bdSSam Ravnborg echo '' 161031b8cc80SRandy Dunlap @echo 'Static analysers:' 16111da177e4SLinus Torvalds @echo ' checkstack - Generate a list of stack hogs' 1612aa025e7dSSam Ravnborg @echo ' versioncheck - Sanity check on version.h usage' 1613ec2d987fSRandy Dunlap @echo ' includecheck - Check for duplicate included header files' 1614295ac051SAdrian Bunk @echo ' export_report - List the usages of all exported symbols' 161574425eeeSNicolas Palix @echo ' headerdep - Detect inclusion cycles in headers' 16167f855fc8SMasahiro Yamada @echo ' coccicheck - Check with Coccinelle' 16176ad7cbc0SNathan Huckleberry @echo ' clang-analyzer - Check with clang static analyzer' 16186ad7cbc0SNathan Huckleberry @echo ' clang-tidy - Check with clang-tidy' 161974425eeeSNicolas Palix @echo '' 1620eb8305aeSMatthias Maennich @echo 'Tools:' 1621eb8305aeSMatthias Maennich @echo ' nsdeps - Generate missing symbol namespace dependencies' 1622eb8305aeSMatthias Maennich @echo '' 162331b8cc80SRandy Dunlap @echo 'Kernel selftest:' 1624e51d8dacSShuah Khan @echo ' kselftest - Build and run kernel selftest' 16255a5da78bSShuah Khan @echo ' Build, install, and boot kernel before' 16265a5da78bSShuah Khan @echo ' running kselftest on it' 1627e51d8dacSShuah Khan @echo ' Run as root for full coverage' 1628e51d8dacSShuah Khan @echo ' kselftest-all - Build kernel selftest' 1629e51d8dacSShuah Khan @echo ' kselftest-install - Build and install kernel selftest' 1630dcb825a9SWang Long @echo ' kselftest-clean - Remove all generated kselftest files' 1631e51d8dacSShuah Khan @echo ' kselftest-merge - Merge all the config dependencies of' 1632e51d8dacSShuah Khan @echo ' kselftest to existing .config.' 16335a5da78bSShuah Khan @echo '' 163437c8a5faSRob Herring @$(if $(dtstree), \ 163537c8a5faSRob Herring echo 'Devicetree:'; \ 163637c8a5faSRob Herring echo '* dtbs - Build device tree blobs for enabled boards'; \ 163737c8a5faSRob Herring echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ 16387aa8dd91SStephen Boyd echo ' dt_binding_check - Validate device tree binding documents'; \ 16397aa8dd91SStephen Boyd echo ' dtbs_check - Validate device tree source files';\ 164037c8a5faSRob Herring echo '') 164137c8a5faSRob Herring 164231b8cc80SRandy Dunlap @echo 'Userspace tools targets:' 164331b8cc80SRandy Dunlap @echo ' use "make tools/help"' 164431b8cc80SRandy Dunlap @echo ' or "cd tools; make help"' 164531b8cc80SRandy Dunlap @echo '' 16461da177e4SLinus Torvalds @echo 'Kernel packaging:' 1647000ec95fSMasahiro Yamada @$(MAKE) -f $(srctree)/scripts/Makefile.package help 16481da177e4SLinus Torvalds @echo '' 16491da177e4SLinus Torvalds @echo 'Documentation targets:' 1650cb43fb57SMauro Carvalho Chehab @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 16511da177e4SLinus Torvalds @echo '' 165201dee188SAndres Salomon @echo 'Architecture specific targets ($(SRCARCH)):' 16531da177e4SLinus Torvalds @$(if $(archhelp),$(archhelp),\ 165401dee188SAndres Salomon echo ' No architecture specific help defined for $(SRCARCH)') 16551da177e4SLinus Torvalds @echo '' 16561da177e4SLinus Torvalds @$(if $(boards), \ 16571da177e4SLinus Torvalds $(foreach b, $(boards), \ 16584234448bSGeert Uytterhoeven printf " %-27s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 16591da177e4SLinus Torvalds echo '') 16605dffbe81SSegher Boessenkool @$(if $(board-dirs), \ 16615dffbe81SSegher Boessenkool $(foreach b, $(board-dirs), \ 16625dffbe81SSegher Boessenkool printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 16635dffbe81SSegher Boessenkool printf " %-16s - Show all of the above\\n" help-boards; \ 16645dffbe81SSegher Boessenkool echo '') 16651da177e4SLinus Torvalds 16661da177e4SLinus Torvalds @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 166745d506bdSSam Ravnborg @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 16681da177e4SLinus Torvalds @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1669a64c0440SGeert Uytterhoeven @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK' 1670a64c0440SGeert Uytterhoeven @echo ' (sparse by default)' 1671701842e3SDustin Kirkland @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1672af07ce3eSIngo Molnar @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1673e27128dbSMasahiro Yamada @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where' 167428bc20dcSSam Ravnborg @echo ' 1: warnings which may be relevant and do not occur too often' 167528bc20dcSSam Ravnborg @echo ' 2: warnings which occur quite often but may still be relevant' 167628bc20dcSSam Ravnborg @echo ' 3: more obscure warnings, can most likely be ignored' 1677a6de553dSMichal Marek @echo ' Multiple levels can be combined with W=12 or W=123' 16781da177e4SLinus Torvalds @echo '' 16791da177e4SLinus Torvalds @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 16801da177e4SLinus Torvalds @echo 'For further info see the ./README file' 16811da177e4SLinus Torvalds 16821da177e4SLinus Torvalds 16835dffbe81SSegher Boessenkoolhelp-board-dirs := $(addprefix help-,$(board-dirs)) 16845dffbe81SSegher Boessenkool 16855dffbe81SSegher Boessenkoolhelp-boards: $(help-board-dirs) 16865dffbe81SSegher Boessenkool 1687fbae4d58SMichal Marekboards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 16885dffbe81SSegher Boessenkool 16895dffbe81SSegher Boessenkool$(help-board-dirs): help-%: 16905dffbe81SSegher Boessenkool @echo 'Architecture specific targets ($(SRCARCH) $*):' 16915dffbe81SSegher Boessenkool @$(if $(boards-per-dir), \ 16925dffbe81SSegher Boessenkool $(foreach b, $(boards-per-dir), \ 16935dffbe81SSegher Boessenkool printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 16945dffbe81SSegher Boessenkool echo '') 16955dffbe81SSegher Boessenkool 16965dffbe81SSegher Boessenkool 16971da177e4SLinus Torvalds# Documentation targets 16981da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1699e8939222SJani NikulaDOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1700e8939222SJani Nikula linkcheckdocs dochelp refcheckdocs 170122cba31bSJani NikulaPHONY += $(DOC_TARGETS) 1702bc7b752aSMasahiro Yamada$(DOC_TARGETS): 1703cb43fb57SMauro Carvalho Chehab $(Q)$(MAKE) $(build)=Documentation $@ 17041da177e4SLinus Torvalds 170567274c08SMasahiro Yamada# Misc 170667274c08SMasahiro Yamada# --------------------------------------------------------------------------- 170767274c08SMasahiro Yamada 170867274c08SMasahiro YamadaPHONY += scripts_gdb 17097a739ce5SMasahiro Yamadascripts_gdb: prepare0 17101e5ff84fSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts/gdb 17118d2e5200SMasahiro Yamada $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) 171267274c08SMasahiro Yamada 171367274c08SMasahiro Yamadaifdef CONFIG_GDB_SCRIPTS 171467274c08SMasahiro Yamadaall: scripts_gdb 171567274c08SMasahiro Yamadaendif 171667274c08SMasahiro Yamada 17171da177e4SLinus Torvaldselse # KBUILD_EXTMOD 17181da177e4SLinus Torvalds 17191da177e4SLinus Torvalds### 17201da177e4SLinus Torvalds# External module support. 17211da177e4SLinus Torvalds# When building external modules the kernel used as basis is considered 17221da177e4SLinus Torvalds# read-only, and no consistency checks are made and the make 17231da177e4SLinus Torvalds# system is not used on the basis kernel. If updates are required 172411122b86SMasahiro Yamada# in the basis kernel ordinary make commands (without M=...) must be used. 17251da177e4SLinus Torvalds 17266212804fSMasahiro Yamada# We are always building only modules. 17276212804fSMasahiro YamadaKBUILD_BUILTIN := 17281da177e4SLinus TorvaldsKBUILD_MODULES := 1 17291da177e4SLinus Torvalds 1730c99f3918SMasahiro Yamadabuild-dirs := $(KBUILD_EXTMOD) 17313d32285fSMasahiro Yamada$(MODORDER): descend 17323d32285fSMasahiro Yamada @: 17333d32285fSMasahiro Yamada 17347f69180bSMasahiro Yamadacompile_commands.json: $(extmod_prefix)compile_commands.json 17353d32285fSMasahiro YamadaPHONY += compile_commands.json 17363d32285fSMasahiro Yamada 173776cd306dSMasahiro Yamadaclean-dirs := $(KBUILD_EXTMOD) 17383d32285fSMasahiro Yamadaclean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps \ 1739dc5723b0SSami Tolvanen $(KBUILD_EXTMOD)/compile_commands.json $(KBUILD_EXTMOD)/.thinlto-cache 17401da177e4SLinus Torvalds 17416072b2c4SMasahiro YamadaPHONY += prepare 17426072b2c4SMasahiro Yamada# now expand this into a simple variable to reduce the cost of shell evaluations 17436072b2c4SMasahiro Yamadaprepare: CC_VERSION_TEXT := $(CC_VERSION_TEXT) 17446072b2c4SMasahiro Yamadaprepare: 17456072b2c4SMasahiro Yamada @if [ "$(CC_VERSION_TEXT)" != $(CONFIG_CC_VERSION_TEXT) ]; then \ 17466072b2c4SMasahiro Yamada echo >&2 "warning: the compiler differs from the one used to build the kernel"; \ 17476072b2c4SMasahiro Yamada echo >&2 " The kernel was built by: "$(CONFIG_CC_VERSION_TEXT); \ 17486072b2c4SMasahiro Yamada echo >&2 " You are using: $(CC_VERSION_TEXT)"; \ 17496072b2c4SMasahiro Yamada fi 17506072b2c4SMasahiro Yamada 1751fe69b420SMasahiro YamadaPHONY += help 17521da177e4SLinus Torvaldshelp: 17531da177e4SLinus Torvalds @echo ' Building external modules.' 17541da177e4SLinus Torvalds @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 17551da177e4SLinus Torvalds @echo '' 17561da177e4SLinus Torvalds @echo ' modules - default target, build the module(s)' 17571da177e4SLinus Torvalds @echo ' modules_install - install the module' 17581da177e4SLinus Torvalds @echo ' clean - remove generated files in module directory only' 17591da177e4SLinus Torvalds @echo '' 176006300b21SSam Ravnborg 1761596b0474SMasahiro Yamada# no-op for external module builds 17626072b2c4SMasahiro YamadaPHONY += modules_prepare 1763596b0474SMasahiro Yamada 17641da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 17651da177e4SLinus Torvalds 17663e3005dfSMasahiro Yamada# --------------------------------------------------------------------------- 17673e3005dfSMasahiro Yamada# Modules 17683e3005dfSMasahiro Yamada 17693e3005dfSMasahiro YamadaPHONY += modules modules_install 17703e3005dfSMasahiro Yamada 17713e3005dfSMasahiro Yamadaifdef CONFIG_MODULES 17723e3005dfSMasahiro Yamada 17731a998be6SMasahiro Yamadamodules: modules_check 17743e3005dfSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 17753e3005dfSMasahiro Yamada 17761a998be6SMasahiro YamadaPHONY += modules_check 17771a998be6SMasahiro Yamadamodules_check: $(MODORDER) 17781a998be6SMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $< 17791a998be6SMasahiro Yamada 17803ac42b21SMasahiro Yamadaquiet_cmd_depmod = DEPMOD $(MODLIB) 17813e3005dfSMasahiro Yamada cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 17823e3005dfSMasahiro Yamada $(KERNELRELEASE) 17833e3005dfSMasahiro Yamada 17843e3005dfSMasahiro Yamadamodules_install: 17853e3005dfSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 17863e3005dfSMasahiro Yamada $(call cmd,depmod) 17873e3005dfSMasahiro Yamada 17883e3005dfSMasahiro Yamadaelse # CONFIG_MODULES 17893e3005dfSMasahiro Yamada 17903e3005dfSMasahiro Yamada# Modules not configured 17913e3005dfSMasahiro Yamada# --------------------------------------------------------------------------- 17923e3005dfSMasahiro Yamada 17933e3005dfSMasahiro Yamadamodules modules_install: 17943e3005dfSMasahiro Yamada @echo >&2 '***' 17953e3005dfSMasahiro Yamada @echo >&2 '*** The present kernel configuration has modules disabled.' 17963e3005dfSMasahiro Yamada @echo >&2 '*** To use the module feature, please run "make menuconfig" etc.' 17973e3005dfSMasahiro Yamada @echo >&2 '*** to enable CONFIG_MODULES.' 17983e3005dfSMasahiro Yamada @echo >&2 '***' 17993e3005dfSMasahiro Yamada @exit 1 18003e3005dfSMasahiro Yamada 18013e3005dfSMasahiro Yamadaendif # CONFIG_MODULES 18023e3005dfSMasahiro Yamada 1803b1fbfcb4SMasahiro Yamada# Single targets 1804b1fbfcb4SMasahiro Yamada# --------------------------------------------------------------------------- 1805b1fbfcb4SMasahiro Yamada# To build individual files in subdirectories, you can do like this: 1806b1fbfcb4SMasahiro Yamada# 1807b1fbfcb4SMasahiro Yamada# make foo/bar/baz.s 1808b1fbfcb4SMasahiro Yamada# 1809b1fbfcb4SMasahiro Yamada# The supported suffixes for single-target are listed in 'single-targets' 1810b1fbfcb4SMasahiro Yamada# 1811b1fbfcb4SMasahiro Yamada# To build only under specific subdirectories, you can do like this: 1812b1fbfcb4SMasahiro Yamada# 1813b1fbfcb4SMasahiro Yamada# make foo/bar/baz/ 1814b1fbfcb4SMasahiro Yamada 1815b1fbfcb4SMasahiro Yamadaifdef single-build 1816b1fbfcb4SMasahiro Yamada 1817b1fbfcb4SMasahiro Yamada# .ko is special because modpost is needed 1818b1fbfcb4SMasahiro Yamadasingle-ko := $(sort $(filter %.ko, $(MAKECMDGOALS))) 1819b1fbfcb4SMasahiro Yamadasingle-no-ko := $(sort $(patsubst %.ko,%.mod, $(MAKECMDGOALS))) 1820b1fbfcb4SMasahiro Yamada 1821b1fbfcb4SMasahiro Yamada$(single-ko): single_modpost 1822b1fbfcb4SMasahiro Yamada @: 1823b1fbfcb4SMasahiro Yamada$(single-no-ko): descend 1824b1fbfcb4SMasahiro Yamada @: 1825b1fbfcb4SMasahiro Yamada 1826b1fbfcb4SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 1827b1fbfcb4SMasahiro Yamada# For the single build of in-tree modules, use a temporary file to avoid 1828b1fbfcb4SMasahiro Yamada# the situation of modules_install installing an invalid modules.order. 1829b1fbfcb4SMasahiro YamadaMODORDER := .modules.tmp 1830b1fbfcb4SMasahiro Yamadaendif 1831b1fbfcb4SMasahiro Yamada 1832b1fbfcb4SMasahiro YamadaPHONY += single_modpost 1833596b0474SMasahiro Yamadasingle_modpost: $(single-no-ko) modules_prepare 18347f69180bSMasahiro Yamada $(Q){ $(foreach m, $(single-ko), echo $(extmod_prefix)$m;) } > $(MODORDER) 1835b1fbfcb4SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1836b1fbfcb4SMasahiro Yamada 1837b1fbfcb4SMasahiro YamadaKBUILD_MODULES := 1 1838b1fbfcb4SMasahiro Yamada 18397f69180bSMasahiro Yamadaexport KBUILD_SINGLE_TARGETS := $(addprefix $(extmod_prefix), $(single-no-ko)) 1840b1fbfcb4SMasahiro Yamada 1841b1fbfcb4SMasahiro Yamada# trim unrelated directories 1842b1fbfcb4SMasahiro Yamadabuild-dirs := $(foreach d, $(build-dirs), \ 1843b1fbfcb4SMasahiro Yamada $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d))) 1844b1fbfcb4SMasahiro Yamada 1845b1fbfcb4SMasahiro Yamadaendif 1846b1fbfcb4SMasahiro Yamada 1847b480fec9SMasahiro Yamadaifndef CONFIG_MODULES 1848b480fec9SMasahiro YamadaKBUILD_MODULES := 1849b480fec9SMasahiro Yamadaendif 1850b480fec9SMasahiro Yamada 1851c99f3918SMasahiro Yamada# Handle descending into subdirectories listed in $(build-dirs) 1852c99f3918SMasahiro Yamada# Preset locale variables to speed up the build process. Limit locale 1853c99f3918SMasahiro Yamada# tweaks to this spot to avoid wrong language settings when running 1854c99f3918SMasahiro Yamada# make menuconfig etc. 1855c99f3918SMasahiro Yamada# Error messages still appears in the original language 1856c99f3918SMasahiro YamadaPHONY += descend $(build-dirs) 1857c99f3918SMasahiro Yamadadescend: $(build-dirs) 1858c99f3918SMasahiro Yamada$(build-dirs): prepare 1859b1fbfcb4SMasahiro Yamada $(Q)$(MAKE) $(build)=$@ \ 186020b1be59SMasahiro Yamada single-build=$(if $(filter-out $@/, $(filter $@/%, $(KBUILD_SINGLE_TARGETS))),1) \ 1861b1fbfcb4SMasahiro Yamada need-builtin=1 need-modorder=1 1862c99f3918SMasahiro Yamada 186376cd306dSMasahiro Yamadaclean-dirs := $(addprefix _clean_, $(clean-dirs)) 186476cd306dSMasahiro YamadaPHONY += $(clean-dirs) clean 186576cd306dSMasahiro Yamada$(clean-dirs): 186676cd306dSMasahiro Yamada $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 186776cd306dSMasahiro Yamada 186888d7be03SMichal Marekclean: $(clean-dirs) 186988d7be03SMichal Marek $(call cmd,rmfiles) 187043f67c98SKevin Cernekee @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1871ef46d9b3SMasahiro Yamada \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ 18724f0e3a57SRob Herring -o -name '*.ko.*' \ 1873ce88c9c7SViresh Kumar -o -name '*.dtb' -o -name '*.dtbo' -o -name '*.dtb.S' -o -name '*.dt.yaml' \ 1874ef46d9b3SMasahiro Yamada -o -name '*.dwo' -o -name '*.lst' \ 1875bbc55bdeSMasahiro Yamada -o -name '*.su' -o -name '*.mod' \ 187688d7be03SMichal Marek -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 18779a8dfb39SMasahiro Yamada -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 18784fa8bc94SMasahiro Yamada -o -name '*.asn1.[ch]' \ 187988d7be03SMichal Marek -o -name '*.symtypes' -o -name 'modules.order' \ 18808b41fc44SMasahiro Yamada -o -name '.tmp_*.o.*' \ 18816b90bd4bSEmese Revfy -o -name '*.c.[012]*.*' \ 1882433db3e2SVinÃcius Tinti -o -name '*.ll' \ 188338e89184SSami Tolvanen -o -name '*.gcno' \ 188438e89184SSami Tolvanen -o -name '*.*.symversions' \) -type f -print | xargs rm -f 188588d7be03SMichal Marek 18861da177e4SLinus Torvalds# Generate tags for editors 18871da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1888a680eedcSSam Ravnborgquiet_cmd_tags = GEN $@ 1889858805b3SMasahiro Yamada cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@ 18901da177e4SLinus Torvalds 1891f4ed1009SJianbin Kangtags TAGS cscope gtags: FORCE 18921da177e4SLinus Torvalds $(call cmd,tags) 18931da177e4SLinus Torvalds 1894eb8305aeSMatthias Maennich# Script to generate missing namespace dependencies 1895eb8305aeSMatthias Maennich# --------------------------------------------------------------------------- 1896eb8305aeSMatthias Maennich 1897eb8305aeSMatthias MaennichPHONY += nsdeps 1898bff9c62bSMasahiro Yamadansdeps: export KBUILD_NSDEPS=1 1899eb8305aeSMatthias Maennichnsdeps: modules 1900bff9c62bSMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/nsdeps 1901eb8305aeSMatthias Maennich 19023d32285fSMasahiro Yamada# Clang Tooling 19033d32285fSMasahiro Yamada# --------------------------------------------------------------------------- 19043d32285fSMasahiro Yamada 19053d32285fSMasahiro Yamadaquiet_cmd_gen_compile_commands = GEN $@ 19063d32285fSMasahiro Yamada cmd_gen_compile_commands = $(PYTHON3) $< -a $(AR) -o $@ $(filter-out $<, $(real-prereqs)) 19073d32285fSMasahiro Yamada 19087f69180bSMasahiro Yamada$(extmod_prefix)compile_commands.json: scripts/clang-tools/gen_compile_commands.py \ 19093d32285fSMasahiro Yamada $(if $(KBUILD_EXTMOD),,$(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)) \ 19103d32285fSMasahiro Yamada $(if $(CONFIG_MODULES), $(MODORDER)) FORCE 19113d32285fSMasahiro Yamada $(call if_changed,gen_compile_commands) 19123d32285fSMasahiro Yamada 19137f69180bSMasahiro Yamadatargets += $(extmod_prefix)compile_commands.json 19143d32285fSMasahiro Yamada 19156ad7cbc0SNathan HuckleberryPHONY += clang-tidy clang-analyzer 19166ad7cbc0SNathan Huckleberry 19176ad7cbc0SNathan Huckleberryifdef CONFIG_CC_IS_CLANG 19186ad7cbc0SNathan Huckleberryquiet_cmd_clang_tools = CHECK $< 19196ad7cbc0SNathan Huckleberry cmd_clang_tools = $(PYTHON3) $(srctree)/scripts/clang-tools/run-clang-tools.py $@ $< 19206ad7cbc0SNathan Huckleberry 19217f69180bSMasahiro Yamadaclang-tidy clang-analyzer: $(extmod_prefix)compile_commands.json 19226ad7cbc0SNathan Huckleberry $(call cmd,clang_tools) 19236ad7cbc0SNathan Huckleberryelse 19246ad7cbc0SNathan Huckleberryclang-tidy clang-analyzer: 19256ad7cbc0SNathan Huckleberry @echo "$@ requires CC=clang" >&2 19266ad7cbc0SNathan Huckleberry @false 19276ad7cbc0SNathan Huckleberryendif 19286ad7cbc0SNathan Huckleberry 19291da177e4SLinus Torvalds# Scripts to check various things for consistency 19301da177e4SLinus Torvalds# --------------------------------------------------------------------------- 19311da177e4SLinus Torvalds 19327dfbea4cSJacob KellerPHONY += includecheck versioncheck coccicheck export_report 1933279f3dd3SPeter Foley 19341da177e4SLinus Torvaldsincludecheck: 1935436f876cSPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 19361da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 193780007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 19381da177e4SLinus Torvalds 19391da177e4SLinus Torvaldsversioncheck: 19402ee2d292SPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 19411da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 194280007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 19431da177e4SLinus Torvalds 194474425eeeSNicolas Palixcoccicheck: 1945858805b3SMasahiro Yamada $(Q)$(BASH) $(srctree)/scripts/$@ 194674425eeeSNicolas Palix 1947295ac051SAdrian Bunkexport_report: 1948295ac051SAdrian Bunk $(PERL) $(srctree)/scripts/export_report.pl 1949295ac051SAdrian Bunk 1950c398ff00SMike MarciniszynPHONY += checkstack kernelrelease kernelversion image_name 1951e3ccf6e3SJeff Dike 1952011e3a9aSJeff Dike# UML needs a little special treatment here. It wants to use the host 1953011e3a9aSJeff Dike# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1954011e3a9aSJeff Dike# else wants $(ARCH), including people doing cross-builds, which means 1955011e3a9aSJeff Dike# that $(SUBARCH) doesn't work here. 1956011e3a9aSJeff Dikeifeq ($(ARCH), um) 1957011e3a9aSJeff DikeCHECKSTACK_ARCH := $(SUBARCH) 1958011e3a9aSJeff Dikeelse 1959011e3a9aSJeff DikeCHECKSTACK_ARCH := $(ARCH) 1960011e3a9aSJeff Dikeendif 19611da177e4SLinus Torvaldscheckstack: 19621da177e4SLinus Torvalds $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 196375dd4747SMasahiro Yamada $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 19641da177e4SLinus Torvalds 19657b8ea53dSAmerigo Wangkernelrelease: 19667b8ea53dSAmerigo Wang @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 196701ab1788SAmerigo Wang 1968cb58455cSSam Ravnborgkernelversion: 19692244cbd8SSam Ravnborg @echo $(KERNELVERSION) 19701da177e4SLinus Torvalds 1971c398ff00SMike Marciniszynimage_name: 1972c398ff00SMike Marciniszyn @echo $(KBUILD_IMAGE) 1973c398ff00SMike Marciniszyn 19741da177e4SLinus Torvaldsquiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 19750663c68cSMasahiro Yamada cmd_rmfiles = rm -rf $(rm-files) 19761da177e4SLinus Torvalds 1977392885eeSMasahiro Yamada# read saved command lines for existing targets 1978392885eeSMasahiro Yamadaexisting-targets := $(wildcard $(sort $(targets))) 19791da177e4SLinus Torvalds 1980b999923cSMasahiro Yamada-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 19811da177e4SLinus Torvalds 198246b7c492SSZ Lin (林上智)endif # config-build 19832042b548SMasahiro Yamadaendif # mixed-build 1984688931a5SMasahiro Yamadaendif # need-sub-make 19851da177e4SLinus Torvalds 19864f193362SPaul SmithPHONY += FORCE 19871da177e4SLinus TorvaldsFORCE: 19884f193362SPaul Smith 1989bd412d81SUlf Magnusson# Declare the contents of the PHONY variable as phony. We keep that 1990fe8d0a41SKirill Smelkov# information in a variable so we can use it in if_changed and friends. 19914f193362SPaul Smith.PHONY: $(PHONY) 1992