1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 2bfeffd15SLinus TorvaldsVERSION = 5 3fe07bfdaSLinus TorvaldsPATCHLEVEL = 12 455922c9dSLinus TorvaldsSUBLEVEL = 0 51e28eed1SLinus TorvaldsEXTRAVERSION = -rc3 6fe07bfdaSLinus TorvaldsNAME = Frozen Wasteland 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 $(error building multiple external modules is not supported)) 131bcf637f5SMasahiro Yamada 132bcf637f5SMasahiro Yamadaexport KBUILD_EXTMOD 133bcf637f5SMasahiro Yamada 13425b146c5SMasahiro Yamada# Kbuild will save output files in the current working directory. 13525b146c5SMasahiro Yamada# This does not need to match to the root of the kernel source tree. 13625b146c5SMasahiro Yamada# 13725b146c5SMasahiro Yamada# For example, you can do this: 13825b146c5SMasahiro Yamada# 13925b146c5SMasahiro Yamada# cd /dir/to/store/output/files; make -f /dir/to/kernel/source/Makefile 14025b146c5SMasahiro Yamada# 14125b146c5SMasahiro Yamada# If you want to save output files in a different location, there are 14225b146c5SMasahiro Yamada# two syntaxes to specify it. 14325b146c5SMasahiro Yamada# 1441da177e4SLinus Torvalds# 1) O= 1451da177e4SLinus Torvalds# Use "make O=dir/to/store/output/files/" 1461da177e4SLinus Torvalds# 1471da177e4SLinus Torvalds# 2) Set KBUILD_OUTPUT 14825b146c5SMasahiro Yamada# Set the environment variable KBUILD_OUTPUT to point to the output directory. 14925b146c5SMasahiro Yamada# export KBUILD_OUTPUT=dir/to/store/output/files/; make 1501da177e4SLinus Torvalds# 1511da177e4SLinus Torvalds# The O= assignment takes precedence over the KBUILD_OUTPUT environment 1521da177e4SLinus Torvalds# variable. 1531da177e4SLinus Torvalds 15425b146c5SMasahiro Yamada# Do we want to change the working directory? 1551da177e4SLinus Torvaldsifeq ("$(origin O)", "command line") 1561da177e4SLinus Torvalds KBUILD_OUTPUT := $(O) 1571da177e4SLinus Torvaldsendif 1581da177e4SLinus Torvalds 15925b146c5SMasahiro Yamadaifneq ($(KBUILD_OUTPUT),) 16025b146c5SMasahiro Yamada# Make's built-in functions such as $(abspath ...), $(realpath ...) cannot 16125b146c5SMasahiro Yamada# expand a shell special character '~'. We use a somewhat tedious way here. 16225b146c5SMasahiro Yamadaabs_objtree := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) 16325b146c5SMasahiro Yamada$(if $(abs_objtree),, \ 16425b146c5SMasahiro Yamada $(error failed to create output directory "$(KBUILD_OUTPUT)")) 16525b146c5SMasahiro Yamada 16625b146c5SMasahiro Yamada# $(realpath ...) resolves symlinks 16725b146c5SMasahiro Yamadaabs_objtree := $(realpath $(abs_objtree)) 16825b146c5SMasahiro Yamadaelse 16925b146c5SMasahiro Yamadaabs_objtree := $(CURDIR) 17025b146c5SMasahiro Yamadaendif # ifneq ($(KBUILD_OUTPUT),) 17125b146c5SMasahiro Yamada 17225b146c5SMasahiro Yamadaifeq ($(abs_objtree),$(CURDIR)) 17325b146c5SMasahiro Yamada# Suppress "Entering directory ..." unless we are changing the work directory. 17425b146c5SMasahiro YamadaMAKEFLAGS += --no-print-directory 17525b146c5SMasahiro Yamadaelse 17625b146c5SMasahiro Yamadaneed-sub-make := 1 17751193b76SRobert Jarzmikendif 17851193b76SRobert Jarzmik 17930cef68dSMasahiro Yamadathis-makefile := $(lastword $(MAKEFILE_LIST)) 18030cef68dSMasahiro Yamadaabs_srctree := $(realpath $(dir $(this-makefile))) 1811da177e4SLinus Torvalds 18225b146c5SMasahiro Yamadaifneq ($(words $(subst :, ,$(abs_srctree))), 1) 18325b146c5SMasahiro Yamada$(error source directory cannot contain spaces or colons) 18425b146c5SMasahiro Yamadaendif 18525b146c5SMasahiro Yamada 18625b146c5SMasahiro Yamadaifneq ($(abs_srctree),$(abs_objtree)) 18780463f1bSMasahiro Yamada# Look for make include files relative to root of kernel src 18880463f1bSMasahiro Yamada# 18980463f1bSMasahiro Yamada# This does not become effective immediately because MAKEFLAGS is re-parsed 19025b146c5SMasahiro Yamada# once after the Makefile is read. We need to invoke sub-make. 19125b146c5SMasahiro YamadaMAKEFLAGS += --include-dir=$(abs_srctree) 192688931a5SMasahiro Yamadaneed-sub-make := 1 19325b146c5SMasahiro Yamadaendif 1943812b8c5SMasahiro Yamada 195688931a5SMasahiro Yamadaifneq ($(filter 3.%,$(MAKE_VERSION)),) 196688931a5SMasahiro Yamada# 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x 197688931a5SMasahiro Yamada# We need to invoke sub-make to avoid implicit rules in the top Makefile. 198688931a5SMasahiro Yamadaneed-sub-make := 1 199688931a5SMasahiro Yamada# Cancel implicit rules for this Makefile. 20093fdddfeSMasahiro Yamada$(this-makefile): ; 201688931a5SMasahiro Yamadaendif 202688931a5SMasahiro Yamada 20325b146c5SMasahiro Yamadaexport abs_srctree abs_objtree 204221cc2d2SMasahiro Yamadaexport sub_make_done := 1 205221cc2d2SMasahiro Yamada 206688931a5SMasahiro Yamadaifeq ($(need-sub-make),1) 207688931a5SMasahiro Yamada 208121c2a13SMasahiro YamadaPHONY += $(MAKECMDGOALS) __sub-make 2090b35786dSMilton Miller 210121c2a13SMasahiro Yamada$(filter-out $(this-makefile), $(MAKECMDGOALS)) __all: __sub-make 21116f89098SCharles Keepax @: 2120b35786dSMilton Miller 213c4e6fff1SCao jin# Invoke a second make in the output directory, passing relevant variables 214121c2a13SMasahiro Yamada__sub-make: 21525b146c5SMasahiro Yamada $(Q)$(MAKE) -C $(abs_objtree) -f $(abs_srctree)/Makefile $(MAKECMDGOALS) 2161da177e4SLinus Torvalds 217688931a5SMasahiro Yamadaendif # need-sub-make 218221cc2d2SMasahiro Yamadaendif # sub_make_done 219688931a5SMasahiro Yamada 2201da177e4SLinus Torvalds# We process the rest of the Makefile if this is the final invocation of make 221688931a5SMasahiro Yamadaifeq ($(need-sub-make),) 2221da177e4SLinus Torvalds 2237ff52571SMasahiro Yamada# Do not print "Entering directory ...", 2247ff52571SMasahiro Yamada# but we want to display it when entering to the output directory 2257ff52571SMasahiro Yamada# so that IDEs/editors are able to understand relative filenames. 2267ff52571SMasahiro YamadaMAKEFLAGS += --no-print-directory 2277ff52571SMasahiro Yamada 22825b146c5SMasahiro Yamadaifeq ($(abs_srctree),$(abs_objtree)) 2299da0763bSMichal Marek # building in the source tree 2309da0763bSMichal Marek srctree := . 231051f278eSMasahiro Yamada building_out_of_srctree := 2329da0763bSMichal Marekelse 23325b146c5SMasahiro Yamada ifeq ($(abs_srctree)/,$(dir $(abs_objtree))) 2349da0763bSMichal Marek # building in a subdirectory of the source tree 2359da0763bSMichal Marek srctree := .. 2369da0763bSMichal Marek else 23725b146c5SMasahiro Yamada srctree := $(abs_srctree) 2389da0763bSMichal Marek endif 239051f278eSMasahiro Yamada building_out_of_srctree := 1 2409da0763bSMichal Marekendif 2412c1f4f12SMasahiro Yamada 24295fd3f87SMasahiro Yamadaifneq ($(KBUILD_ABS_SRCTREE),) 24395fd3f87SMasahiro Yamadasrctree := $(abs_srctree) 24495fd3f87SMasahiro Yamadaendif 2452c1f4f12SMasahiro Yamada 2467e1c0477SMichal Marekobjtree := . 2476b12de69SMasahiro YamadaVPATH := $(srctree) 2481da177e4SLinus Torvalds 249051f278eSMasahiro Yamadaexport building_out_of_srctree srctree objtree VPATH 2501da177e4SLinus Torvalds 2512c1f4f12SMasahiro Yamada# To make sure we do not include .config for any of the *config targets 2522c1f4f12SMasahiro Yamada# catch them early, and hand them over to scripts/kconfig/Makefile 2532c1f4f12SMasahiro Yamada# It is allowed to specify more targets when calling make, including 2542c1f4f12SMasahiro Yamada# mixing *config targets and build targets. 2552c1f4f12SMasahiro Yamada# For example 'make oldconfig all'. 2562c1f4f12SMasahiro Yamada# Detect when mixed targets is specified, and make a second invocation 2572c1f4f12SMasahiro Yamada# of make so .config is not included in this case either (for *config). 2582c1f4f12SMasahiro Yamada 2592c1f4f12SMasahiro Yamadaversion_h := include/generated/uapi/linux/version.h 2602c1f4f12SMasahiro Yamada 26122340a06SMasahiro Yamadaclean-targets := %clean mrproper cleandocs 26222340a06SMasahiro Yamadano-dot-config-targets := $(clean-targets) \ 2632c1f4f12SMasahiro Yamada cscope gtags TAGS tags help% %docs check% coccicheck \ 26459b2bd05SMasahiro Yamada $(version_h) headers headers_% archheaders archscripts \ 2654623980dSDavid Engraf %asm-generic kernelversion %src-pkg dt_binding_check \ 2664623980dSDavid Engraf outputmakefile 267805b2e1dSMasahiro Yamada# Installation targets should not require compiler. Unfortunately, vdso_install 268805b2e1dSMasahiro Yamada# is an exception where build artifacts may be updated. This must be fixed. 269805b2e1dSMasahiro Yamadano-compiler-targets := $(no-dot-config-targets) install dtbs_install \ 270805b2e1dSMasahiro Yamada headers_install modules_install kernelrelease image_name 271993bdde9SMasahiro Yamadano-sync-config-targets := $(no-dot-config-targets) %install kernelrelease \ 272993bdde9SMasahiro Yamada image_name 273394053f4SMasahiro Yamadasingle-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/ 2742c1f4f12SMasahiro Yamada 2752042b548SMasahiro Yamadaconfig-build := 2762042b548SMasahiro Yamadamixed-build := 2772042b548SMasahiro Yamadaneed-config := 1 278805b2e1dSMasahiro Yamadaneed-compiler := 1 279d7942413SMasahiro Yamadamay-sync-config := 1 280394053f4SMasahiro Yamadasingle-build := 2812c1f4f12SMasahiro Yamada 2822c1f4f12SMasahiro Yamadaifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 2832c1f4f12SMasahiro Yamada ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 2842042b548SMasahiro Yamada need-config := 2852c1f4f12SMasahiro Yamada endif 2862c1f4f12SMasahiro Yamadaendif 2872c1f4f12SMasahiro Yamada 288805b2e1dSMasahiro Yamadaifneq ($(filter $(no-compiler-targets), $(MAKECMDGOALS)),) 289805b2e1dSMasahiro Yamada ifeq ($(filter-out $(no-compiler-targets), $(MAKECMDGOALS)),) 290805b2e1dSMasahiro Yamada need-compiler := 291805b2e1dSMasahiro Yamada endif 292805b2e1dSMasahiro Yamadaendif 293805b2e1dSMasahiro Yamada 294d7942413SMasahiro Yamadaifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) 295d7942413SMasahiro Yamada ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) 2962042b548SMasahiro Yamada may-sync-config := 297d7942413SMasahiro Yamada endif 298d7942413SMasahiro Yamadaendif 299d7942413SMasahiro Yamada 300d7942413SMasahiro Yamadaifneq ($(KBUILD_EXTMOD),) 3012042b548SMasahiro Yamada may-sync-config := 302d7942413SMasahiro Yamadaendif 303d7942413SMasahiro Yamada 3042c1f4f12SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 305efbf9726SMasahiro Yamada ifneq ($(filter %config,$(MAKECMDGOALS)),) 3062042b548SMasahiro Yamada config-build := 1 3072c1f4f12SMasahiro Yamada ifneq ($(words $(MAKECMDGOALS)),1) 3082042b548SMasahiro Yamada mixed-build := 1 3092c1f4f12SMasahiro Yamada endif 3102c1f4f12SMasahiro Yamada endif 3112c1f4f12SMasahiro Yamadaendif 31222340a06SMasahiro Yamada 313394053f4SMasahiro Yamada# We cannot build single targets and the others at the same time 314394053f4SMasahiro Yamadaifneq ($(filter $(single-targets), $(MAKECMDGOALS)),) 315394053f4SMasahiro Yamada single-build := 1 316394053f4SMasahiro Yamada ifneq ($(filter-out $(single-targets), $(MAKECMDGOALS)),) 317394053f4SMasahiro Yamada mixed-build := 1 318394053f4SMasahiro Yamada endif 319394053f4SMasahiro Yamadaendif 320394053f4SMasahiro Yamada 32122340a06SMasahiro Yamada# For "make -j clean all", "make -j mrproper defconfig all", etc. 32222340a06SMasahiro Yamadaifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 32322340a06SMasahiro Yamada ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 3242042b548SMasahiro Yamada mixed-build := 1 32522340a06SMasahiro Yamada endif 32622340a06SMasahiro Yamadaendif 32722340a06SMasahiro Yamada 3282c1f4f12SMasahiro Yamada# install and modules_install need also be processed one by one 3292c1f4f12SMasahiro Yamadaifneq ($(filter install,$(MAKECMDGOALS)),) 3302c1f4f12SMasahiro Yamada ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 3312042b548SMasahiro Yamada mixed-build := 1 3322c1f4f12SMasahiro Yamada endif 3332c1f4f12SMasahiro Yamadaendif 3342c1f4f12SMasahiro Yamada 3352042b548SMasahiro Yamadaifdef mixed-build 3362c1f4f12SMasahiro Yamada# =========================================================================== 3372c1f4f12SMasahiro Yamada# We're called with mixed targets (*config and build targets). 3382c1f4f12SMasahiro Yamada# Handle them one by one. 3392c1f4f12SMasahiro Yamada 3402c1f4f12SMasahiro YamadaPHONY += $(MAKECMDGOALS) __build_one_by_one 3412c1f4f12SMasahiro Yamada 342121c2a13SMasahiro Yamada$(MAKECMDGOALS): __build_one_by_one 3432c1f4f12SMasahiro Yamada @: 3442c1f4f12SMasahiro Yamada 3452c1f4f12SMasahiro Yamada__build_one_by_one: 3462c1f4f12SMasahiro Yamada $(Q)set -e; \ 3472c1f4f12SMasahiro Yamada for i in $(MAKECMDGOALS); do \ 3482c1f4f12SMasahiro Yamada $(MAKE) -f $(srctree)/Makefile $$i; \ 3492c1f4f12SMasahiro Yamada done 3502c1f4f12SMasahiro Yamada 3512042b548SMasahiro Yamadaelse # !mixed-build 3522c1f4f12SMasahiro Yamada 3533204a7fbSMasahiro Yamadainclude $(srctree)/scripts/Kbuild.include 3542c1f4f12SMasahiro Yamada 3552c1f4f12SMasahiro Yamada# Read KERNELRELEASE from include/config/kernel.release (if it exists) 3562c1f4f12SMasahiro YamadaKERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 3572c1f4f12SMasahiro YamadaKERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 3582c1f4f12SMasahiro Yamadaexport VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 3592c1f4f12SMasahiro Yamada 3603204a7fbSMasahiro Yamadainclude $(srctree)/scripts/subarch.include 3611da177e4SLinus Torvalds 3621da177e4SLinus Torvalds# Cross compiling and selecting different set of gcc/bin-utils 3631da177e4SLinus Torvalds# --------------------------------------------------------------------------- 3641da177e4SLinus Torvalds# 3651da177e4SLinus Torvalds# When performing cross compilation for other architectures ARCH shall be set 3661da177e4SLinus Torvalds# to the target architecture. (See arch/* for the possibilities). 3671da177e4SLinus Torvalds# ARCH can be set during invocation of make: 3681da177e4SLinus Torvalds# make ARCH=ia64 3691da177e4SLinus Torvalds# Another way is to have ARCH set in the environment. 3701da177e4SLinus Torvalds# The default ARCH is the host where make is executed. 3711da177e4SLinus Torvalds 3721da177e4SLinus Torvalds# CROSS_COMPILE specify the prefix used for all executables used 3731da177e4SLinus Torvalds# during compilation. Only gcc and related bin-utils executables 3741da177e4SLinus Torvalds# are prefixed with $(CROSS_COMPILE). 3751da177e4SLinus Torvalds# CROSS_COMPILE can be set on the command line 3761da177e4SLinus Torvalds# make CROSS_COMPILE=ia64-linux- 3771da177e4SLinus Torvalds# Alternatively CROSS_COMPILE can be set in the environment. 3781da177e4SLinus Torvalds# Default value for CROSS_COMPILE is not to prefix executables 3791da177e4SLinus Torvalds# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 3802331d1a6SSam RavnborgARCH ?= $(SUBARCH) 3811da177e4SLinus Torvalds 3821da177e4SLinus Torvalds# Architecture as present in compile.h 3831da177e4SLinus TorvaldsUTS_MACHINE := $(ARCH) 3846752ed90SThomas GleixnerSRCARCH := $(ARCH) 3851da177e4SLinus Torvalds 386d746d647SSam Ravnborg# Additional ARCH settings for x86 387d746d647SSam Ravnborgifeq ($(ARCH),i386) 388d746d647SSam Ravnborg SRCARCH := x86 389d746d647SSam Ravnborgendif 390d746d647SSam Ravnborgifeq ($(ARCH),x86_64) 391d746d647SSam Ravnborg SRCARCH := x86 392d746d647SSam Ravnborgendif 39374b469f2SSam Ravnborg 3945e538790SSam Ravnborg# Additional ARCH settings for sparc 395e69f58c0SNamhyung Kimifeq ($(ARCH),sparc32) 396e69f58c0SNamhyung Kim SRCARCH := sparc 397e69f58c0SNamhyung Kimendif 398a439fe51SSam Ravnborgifeq ($(ARCH),sparc64) 3995e538790SSam Ravnborg SRCARCH := sparc 400a439fe51SSam Ravnborgendif 4012fb9b1bdSSam Ravnborg 4023cc000b5SPaul Mundt# Additional ARCH settings for sh 4033cc000b5SPaul Mundtifeq ($(ARCH),sh64) 4043cc000b5SPaul Mundt SRCARCH := sh 4053cc000b5SPaul Mundtendif 4063cc000b5SPaul Mundt 40714cdd3c4SRoman ZippelKCONFIG_CONFIG ?= .config 40841263fc6SBen Gardinerexport KCONFIG_CONFIG 40914cdd3c4SRoman Zippel 4102a86f661SMasahiro Yamada# Default file for 'make defconfig'. This may be overridden by arch-Makefile. 4112a86f661SMasahiro Yamadaexport KBUILD_DEFCONFIG := defconfig 4122a86f661SMasahiro Yamada 4131da177e4SLinus Torvalds# SHELL used by kbuild 414858805b3SMasahiro YamadaCONFIG_SHELL := sh 4151da177e4SLinus Torvalds 4166d79a7b4SMasahiro YamadaHOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 4176d79a7b4SMasahiro YamadaHOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 4186d79a7b4SMasahiro YamadaHOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 419d7f14c66SUwe Kleine-König 420a0d1c951SMasahiro Yamadaifneq ($(LLVM),) 421a0d1c951SMasahiro YamadaHOSTCC = clang 422a0d1c951SMasahiro YamadaHOSTCXX = clang++ 423a0d1c951SMasahiro Yamadaelse 4241da177e4SLinus TorvaldsHOSTCC = gcc 4251da177e4SLinus TorvaldsHOSTCXX = g++ 426a0d1c951SMasahiro Yamadaendif 4277f3a59dbSMasahiro Yamada 4287f3a59dbSMasahiro Yamadaexport KBUILD_USERCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \ 4297f3a59dbSMasahiro Yamada -O2 -fomit-frame-pointer -std=gnu89 4307f3a59dbSMasahiro Yamadaexport KBUILD_USERLDFLAGS := 4317f3a59dbSMasahiro Yamada 4327f3a59dbSMasahiro YamadaKBUILD_HOSTCFLAGS := $(KBUILD_USERCFLAGS) $(HOST_LFS_CFLAGS) $(HOSTCFLAGS) 433735aab1eSMasahiro YamadaKBUILD_HOSTCXXFLAGS := -Wall -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 434f92d19e0SLaura AbbottKBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 435f92d19e0SLaura AbbottKBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 4361da177e4SLinus Torvalds 4371da177e4SLinus Torvalds# Make variables (CC, etc...) 4381da177e4SLinus TorvaldsCPP = $(CC) -E 439a0d1c951SMasahiro Yamadaifneq ($(LLVM),) 440a0d1c951SMasahiro YamadaCC = clang 441a0d1c951SMasahiro YamadaLD = ld.lld 442a0d1c951SMasahiro YamadaAR = llvm-ar 443a0d1c951SMasahiro YamadaNM = llvm-nm 444a0d1c951SMasahiro YamadaOBJCOPY = llvm-objcopy 445a0d1c951SMasahiro YamadaOBJDUMP = llvm-objdump 446a0d1c951SMasahiro YamadaREADELF = llvm-readelf 447a0d1c951SMasahiro YamadaSTRIP = llvm-strip 448a0d1c951SMasahiro Yamadaelse 449a0d1c951SMasahiro YamadaCC = $(CROSS_COMPILE)gcc 450a0d1c951SMasahiro YamadaLD = $(CROSS_COMPILE)ld 4511da177e4SLinus TorvaldsAR = $(CROSS_COMPILE)ar 4521da177e4SLinus TorvaldsNM = $(CROSS_COMPILE)nm 4531da177e4SLinus TorvaldsOBJCOPY = $(CROSS_COMPILE)objcopy 4541da177e4SLinus TorvaldsOBJDUMP = $(CROSS_COMPILE)objdump 455eefb8c12SDmitry GolovinREADELF = $(CROSS_COMPILE)readelf 456a0d1c951SMasahiro YamadaSTRIP = $(CROSS_COMPILE)strip 457a0d1c951SMasahiro Yamadaendif 458e83b9f55SAndrii NakryikoPAHOLE = pahole 459c9a0f3b8SJiri OlsaRESOLVE_BTFIDS = $(objtree)/tools/bpf/resolve_btfids/resolve_btfids 46073a4f6dbSMasahiro YamadaLEX = flex 46173a4f6dbSMasahiro YamadaYACC = bison 4621da177e4SLinus TorvaldsAWK = awk 463caa27b66SSam RavnborgINSTALLKERNEL := installkernel 464436e980eSDominique MartinetDEPMOD = depmod 4651da177e4SLinus TorvaldsPERL = perl 466e9781b52SMasahiro YamadaPYTHON3 = python3 4671da177e4SLinus TorvaldsCHECK = sparse 468858805b3SMasahiro YamadaBASH = bash 469e4a42c82SDenis EfremovKGZIP = gzip 470e4a42c82SDenis EfremovKBZIP2 = bzip2 471e4a42c82SDenis EfremovKLZOP = lzop 4728dfb61dcSDenis EfremovLZMA = lzma 4738dfb61dcSDenis EfremovLZ4 = lz4c 4748dfb61dcSDenis EfremovXZ = xz 47548f7ddf7SNick TerrellZSTD = zstd 4768dfb61dcSDenis Efremov 47780a7d1d9SHannes EderCHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 4786c49f359SLuc Van Oostenryck -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 4790c22be07SDouglas AndersonNOSTDINC_FLAGS := 4806588169dSSam RavnborgCFLAGS_MODULE = 4816588169dSSam RavnborgAFLAGS_MODULE = 4826588169dSSam RavnborgLDFLAGS_MODULE = 4831da177e4SLinus TorvaldsCFLAGS_KERNEL = 4841da177e4SLinus TorvaldsAFLAGS_KERNEL = 485b36fad65SMichal MarekLDFLAGS_vmlinux = 4861da177e4SLinus Torvalds 487abbf1590SDavid Howells# Use USERINCLUDE when you must reference the UAPI directories only. 488abbf1590SDavid HowellsUSERINCLUDE := \ 4899d022c54SMasahiro Yamada -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 4909d022c54SMasahiro Yamada -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 491abbf1590SDavid Howells -I$(srctree)/include/uapi \ 4923308b285SArnd Bergmann -I$(objtree)/include/generated/uapi \ 493ce6ed1c4SMasahiro Yamada -include $(srctree)/include/linux/compiler-version.h \ 494abbf1590SDavid Howells -include $(srctree)/include/linux/kconfig.h 495abbf1590SDavid Howells 4961da177e4SLinus Torvalds# Use LINUXINCLUDE when you must reference the include/ directory. 4971da177e4SLinus Torvalds# Needed to be compatible with the O= option 498abbf1590SDavid HowellsLINUXINCLUDE := \ 4999d022c54SMasahiro Yamada -I$(srctree)/arch/$(SRCARCH)/include \ 5009d022c54SMasahiro Yamada -I$(objtree)/arch/$(SRCARCH)/include/generated \ 501051f278eSMasahiro Yamada $(if $(building_out_of_srctree),-I$(srctree)/include) \ 502f8224f7fSMasahiro Yamada -I$(objtree)/include \ 503f8224f7fSMasahiro Yamada $(USERINCLUDE) 5041da177e4SLinus Torvalds 50542a92bccSMasahiro YamadaKBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE 506eeb5687aSMasahiro YamadaKBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ 50742a92bccSMasahiro Yamada -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ 508b89f25eaSLuc Van Oostenryck -Werror=implicit-function-declaration -Werror=implicit-int \ 509172aad81SOlaf Hering -Werror=return-type -Wno-format-security \ 510433dc2ebSMasahiro Yamada -std=gnu89 511433dc2ebSMasahiro YamadaKBUILD_CPPFLAGS := -D__KERNEL__ 51280c00ba9SSam RavnborgKBUILD_AFLAGS_KERNEL := 51380c00ba9SSam RavnborgKBUILD_CFLAGS_KERNEL := 5146588169dSSam RavnborgKBUILD_AFLAGS_MODULE := -DMODULE 5156588169dSSam RavnborgKBUILD_CFLAGS_MODULE := -DMODULE 51610df0638SMasahiro YamadaKBUILD_LDFLAGS_MODULE := 517d503ac53SMasahiro YamadaKBUILD_LDFLAGS := 5185241ab4cSMasahiro YamadaCLANG_FLAGS := 5191da177e4SLinus Torvalds 520aa824e0cSMasahiro Yamadaexport ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC 521d9b5665fSVasily Gorbikexport CPP AR NM STRIP OBJCOPY OBJDUMP READELF PAHOLE RESOLVE_BTFIDS LEX YACC AWK INSTALLKERNEL 522d8d2d382SMasahiro Yamadaexport PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX 52348f7ddf7SNick Terrellexport KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD 5247bac9870SVasily Gorbikexport KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE 5251da177e4SLinus Torvalds 526d503ac53SMasahiro Yamadaexport KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 5270e410e15SAndrey Konovalovexport KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 528222d394dSSam Ravnborgexport KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 5296588169dSSam Ravnborgexport KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 53080c00ba9SSam Ravnborgexport KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 5311da177e4SLinus Torvalds 5321da177e4SLinus Torvalds# Files to ignore in find ... statements 5331da177e4SLinus Torvalds 534ae63b2d7SPrarit Bhargavaexport RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 535ae63b2d7SPrarit Bhargava -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 536ae63b2d7SPrarit Bhargava -prune -o 537450c6076SJesper Juhlexport RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 538450c6076SJesper Juhl --exclude CVS --exclude .pc --exclude .hg --exclude .git 5391da177e4SLinus Torvalds 5401da177e4SLinus Torvalds# =========================================================================== 5411da177e4SLinus Torvalds# Rules shared between *config targets and build targets 5421da177e4SLinus Torvalds 543312a3d09SCao jin# Basic helpers built in scripts/basic/ 5444f193362SPaul SmithPHONY += scripts_basic 5451da177e4SLinus Torvaldsscripts_basic: 5461da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/basic 547638adb05SSteven Rostedt $(Q)rm -f .tmp_quiet_recordmcount 5481da177e4SLinus Torvalds 5494f193362SPaul SmithPHONY += outputmakefile 550e8e83a23SMasahiro Yamada# Before starting out-of-tree build, make sure the source tree is clean. 551fd5f0cd6SJan Beulich# outputmakefile generates a Makefile in the output directory, if using a 552fd5f0cd6SJan Beulich# separate output directory. This allows convenient use of make in the 553fd5f0cd6SJan Beulich# output directory. 5543a51ff34SVladimir Kondratiev# At the same time when output Makefile generated, generate .gitignore to 5553a51ff34SVladimir Kondratiev# ignore whole output directory 5561da177e4SLinus Torvaldsoutputmakefile: 557051f278eSMasahiro Yamadaifdef building_out_of_srctree 558e8e83a23SMasahiro Yamada $(Q)if [ -f $(srctree)/.config -o \ 559e8e83a23SMasahiro Yamada -d $(srctree)/include/config -o \ 560e8e83a23SMasahiro Yamada -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \ 561e8e83a23SMasahiro Yamada echo >&2 "***"; \ 562e8e83a23SMasahiro Yamada echo >&2 "*** The source tree is not clean, please run 'make$(if $(findstring command line, $(origin ARCH)), ARCH=$(ARCH)) mrproper'"; \ 563e8e83a23SMasahiro Yamada echo >&2 "*** in $(abs_srctree)";\ 564e8e83a23SMasahiro Yamada echo >&2 "***"; \ 565e8e83a23SMasahiro Yamada false; \ 566e8e83a23SMasahiro Yamada fi 56792979997SAndi Kleen $(Q)ln -fsn $(srctree) source 5684fd61277SMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree) 569156e7cbbSMasahiro Yamada $(Q)test -e .gitignore || \ 570156e7cbbSMasahiro Yamada { echo "# this is build directory, ignore it"; echo "*"; } > .gitignore 571fd5f0cd6SJan Beulichendif 5721da177e4SLinus Torvalds 573db07562aSNick Desaulniers# The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 574db07562aSNick Desaulniers# Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 575db07562aSNick Desaulniers# CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 576db07562aSNick Desaulniers# and from include/config/auto.conf.cmd to detect the compiler upgrade. 5776e0839fdSMasahiro YamadaCC_VERSION_TEXT = $(subst $(pound),,$(shell $(CC) --version 2>/dev/null | head -n 1)) 578db07562aSNick Desaulniers 579db07562aSNick Desaulniersifneq ($(findstring clang,$(CC_VERSION_TEXT)),) 580ae6b289aSChris Friesifneq ($(CROSS_COMPILE),) 5815241ab4cSMasahiro YamadaCLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) 582ae6b289aSChris Friesendif 583ba64beb1SMasahiro Yamadaifeq ($(LLVM_IAS),1) 584ba64beb1SMasahiro YamadaCLANG_FLAGS += -integrated-as 585ba64beb1SMasahiro Yamadaelse 586238bcbc4SMasahiro YamadaCLANG_FLAGS += -no-integrated-as 587eec08090SNathan ChancellorGCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) 588eec08090SNathan ChancellorCLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE)) 589876a0600SNathan Chancellorendif 590589834b3SNathan ChancellorCLANG_FLAGS += -Werror=unknown-warning-option 591238bcbc4SMasahiro YamadaKBUILD_CFLAGS += $(CLANG_FLAGS) 592238bcbc4SMasahiro YamadaKBUILD_AFLAGS += $(CLANG_FLAGS) 5933bd98050SJoel Stanleyexport CLANG_FLAGS 594ae6b289aSChris Friesendif 595ae6b289aSChris Fries 59657fd251cSMasahiro Yamada# Include this also for config targets because some architectures need 59757fd251cSMasahiro Yamada# cc-cross-prefix to determine CROSS_COMPILE. 598805b2e1dSMasahiro Yamadaifdef need-compiler 59957fd251cSMasahiro Yamadainclude $(srctree)/scripts/Makefile.compiler 600805b2e1dSMasahiro Yamadaendif 60157fd251cSMasahiro Yamada 6022042b548SMasahiro Yamadaifdef config-build 6031da177e4SLinus Torvalds# =========================================================================== 6041da177e4SLinus Torvalds# *config targets only - make sure prerequisites are updated, and descend 6051da177e4SLinus Torvalds# in scripts/kconfig to make the *config target 6061da177e4SLinus Torvalds 6071da177e4SLinus Torvalds# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 6081da177e4SLinus Torvalds# KBUILD_DEFCONFIG may point out an alternative default configuration 6091da177e4SLinus Torvalds# used for 'make defconfig' 6103204a7fbSMasahiro Yamadainclude $(srctree)/arch/$(SRCARCH)/Makefile 611315bab4eSMasahiro Yamadaexport KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 6121da177e4SLinus Torvalds 61336de077bSMasahiro Yamadaconfig: outputmakefile scripts_basic FORCE 61431110ebbSSam Ravnborg $(Q)$(MAKE) $(build)=scripts/kconfig $@ 61531110ebbSSam Ravnborg 61636de077bSMasahiro Yamada%config: outputmakefile scripts_basic FORCE 6171da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/kconfig $@ 6181da177e4SLinus Torvalds 6192042b548SMasahiro Yamadaelse #!config-build 6201da177e4SLinus Torvalds# =========================================================================== 6211da177e4SLinus Torvalds# Build targets only - this includes vmlinux, arch specific targets, clean 6221da177e4SLinus Torvalds# targets and others. In general all targets except *config targets. 6231da177e4SLinus Torvalds 6242c1f4f12SMasahiro Yamada# If building an external module we do not care about the all: rule 625121c2a13SMasahiro Yamada# but instead __all depend on modules 6262c1f4f12SMasahiro YamadaPHONY += all 6272c1f4f12SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 628121c2a13SMasahiro Yamada__all: all 6292c1f4f12SMasahiro Yamadaelse 630121c2a13SMasahiro Yamada__all: modules 6312c1f4f12SMasahiro Yamadaendif 6322c1f4f12SMasahiro Yamada 6332c1f4f12SMasahiro Yamada# Decide whether to build built-in, modular, or both. 6342c1f4f12SMasahiro Yamada# Normally, just do built-in. 6352c1f4f12SMasahiro Yamada 6362c1f4f12SMasahiro YamadaKBUILD_MODULES := 6372c1f4f12SMasahiro YamadaKBUILD_BUILTIN := 1 6382c1f4f12SMasahiro Yamada 6392c1f4f12SMasahiro Yamada# If we have only "make modules", don't compile built-in objects. 6402c1f4f12SMasahiro Yamadaifeq ($(MAKECMDGOALS),modules) 6414b50c8c4SMasahiro Yamada KBUILD_BUILTIN := 6422c1f4f12SMasahiro Yamadaendif 6432c1f4f12SMasahiro Yamada 6442c1f4f12SMasahiro Yamada# If we have "make <whatever> modules", compile modules 6452c1f4f12SMasahiro Yamada# in addition to whatever we do anyway. 6462c1f4f12SMasahiro Yamada# Just "make" or "make all" shall build modules as well 6472c1f4f12SMasahiro Yamada 6486ad7cbc0SNathan Huckleberryifneq ($(filter all modules nsdeps %compile_commands.json clang-%,$(MAKECMDGOALS)),) 6492c1f4f12SMasahiro Yamada KBUILD_MODULES := 1 6502c1f4f12SMasahiro Yamadaendif 6512c1f4f12SMasahiro Yamada 6522c1f4f12SMasahiro Yamadaifeq ($(MAKECMDGOALS),) 6532c1f4f12SMasahiro Yamada KBUILD_MODULES := 1 6542c1f4f12SMasahiro Yamadaendif 6552c1f4f12SMasahiro Yamada 6562c1f4f12SMasahiro Yamadaexport KBUILD_MODULES KBUILD_BUILTIN 6572c1f4f12SMasahiro Yamada 6582042b548SMasahiro Yamadaifdef need-config 659d93a18f2SMasahiro Yamadainclude include/config/auto.conf 660d93a18f2SMasahiro Yamadaendif 661d93a18f2SMasahiro Yamada 6621da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 6631da177e4SLinus Torvalds# Objects we will link into vmlinux / subdirs we need to visit 66423febe37SMasahiro Yamadacore-y := init/ usr/ 665f96182e9SMasahiro Yamadadrivers-y := drivers/ sound/ 666d93a18f2SMasahiro Yamadadrivers-$(CONFIG_SAMPLES) += samples/ 6678b5f4eb3SMasahiro Yamadadrivers-$(CONFIG_NET) += net/ 6688b5f4eb3SMasahiro Yamadadrivers-y += virt/ 6691da177e4SLinus Torvaldslibs-y := lib/ 6701da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 6711da177e4SLinus Torvalds 672315bab4eSMasahiro Yamada# The all: target is the default when no target is given on the 673315bab4eSMasahiro Yamada# command line. 674315bab4eSMasahiro Yamada# This allow a user to issue only 'make' to build a kernel including modules 675315bab4eSMasahiro Yamada# Defaults to vmlinux, but the arch makefile usually adds further targets 676315bab4eSMasahiro Yamadaall: vmlinux 677315bab4eSMasahiro Yamada 678315bab4eSMasahiro YamadaCFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ 679315bab4eSMasahiro Yamada $(call cc-option,-fno-tree-loop-im) \ 680315bab4eSMasahiro Yamada $(call cc-disable-warning,maybe-uninitialized,) 6815aadfdebSMasahiro Yamadaexport CFLAGS_GCOV 682315bab4eSMasahiro Yamada 683b1f4ff74SPaulo Zanoni# The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later. 684b1f4ff74SPaulo Zanoniifdef CONFIG_FUNCTION_TRACER 685b1f4ff74SPaulo Zanoni CC_FLAGS_FTRACE := -pg 686b1f4ff74SPaulo Zanoniendif 687b1f4ff74SPaulo Zanoni 688669e06b1SMasahiro YamadaRETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register 689669e06b1SMasahiro YamadaRETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register 690669e06b1SMasahiro YamadaRETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk 691669e06b1SMasahiro YamadaRETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline 692669e06b1SMasahiro YamadaRETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG))) 693669e06b1SMasahiro YamadaRETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG))) 694669e06b1SMasahiro Yamadaexport RETPOLINE_CFLAGS 695669e06b1SMasahiro Yamadaexport RETPOLINE_VDSO_CFLAGS 696669e06b1SMasahiro Yamada 6973204a7fbSMasahiro Yamadainclude $(srctree)/arch/$(SRCARCH)/Makefile 698315bab4eSMasahiro Yamada 6992042b548SMasahiro Yamadaifdef need-config 7002042b548SMasahiro Yamadaifdef may-sync-config 701315bab4eSMasahiro Yamada# Read in dependencies to all Kconfig* files, make sure to run syncconfig if 702315bab4eSMasahiro Yamada# changes are detected. This should be included after arch/$(SRCARCH)/Makefile 703315bab4eSMasahiro Yamada# because some architectures define CROSS_COMPILE there. 704d2f8ae0eSMasahiro Yamadainclude include/config/auto.conf.cmd 7051da177e4SLinus Torvalds 70605850719SMasahiro Yamada$(KCONFIG_CONFIG): 70705850719SMasahiro Yamada @echo >&2 '***' 70805850719SMasahiro Yamada @echo >&2 '*** Configuration file "$@" not found!' 70905850719SMasahiro Yamada @echo >&2 '***' 71005850719SMasahiro Yamada @echo >&2 '*** Please run some configurator (e.g. "make oldconfig" or' 71105850719SMasahiro Yamada @echo >&2 '*** "make menuconfig" or "make xconfig").' 71205850719SMasahiro Yamada @echo >&2 '***' 71305850719SMasahiro Yamada @/bin/false 7141da177e4SLinus Torvalds 71561277981SUlf Magnusson# The actual configuration files used during the build are stored in 71661277981SUlf Magnusson# include/generated/ and include/config/. Update them if .config is newer than 71761277981SUlf Magnusson# include/config/auto.conf (which mirrors .config). 7189390dff6SMasahiro Yamada# 7199390dff6SMasahiro Yamada# This exploits the 'multi-target pattern rule' trick. 7209390dff6SMasahiro Yamada# The syncconfig should be executed only once to make all the targets. 721f463c351SMasahiro Yamada# (Note: use the grouped target '&:' when we bump to GNU Make 4.3) 72223cd88c9SMasahiro Yamadaquiet_cmd_syncconfig = SYNC $@ 72323cd88c9SMasahiro Yamada cmd_syncconfig = $(MAKE) -f $(srctree)/Makefile syncconfig 72423cd88c9SMasahiro Yamada 7253044dd05SMasahiro Yamada%/config/auto.conf %/config/auto.conf.cmd %/generated/autoconf.h: $(KCONFIG_CONFIG) 72623cd88c9SMasahiro Yamada +$(call cmd,syncconfig) 7272042b548SMasahiro Yamadaelse # !may-sync-config 728d7942413SMasahiro Yamada# External modules and some install targets need include/generated/autoconf.h 729d7942413SMasahiro Yamada# and include/config/auto.conf but do not care if they are up-to-date. 730d7942413SMasahiro Yamada# Use auto.conf to trigger the test 7319ee4e336SSam RavnborgPHONY += include/config/auto.conf 7329ee4e336SSam Ravnborg 7339ee4e336SSam Ravnborginclude/config/auto.conf: 734264a2683SSam Ravnborg $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 7355369f550SMichal Marek echo >&2; \ 7365369f550SMichal Marek echo >&2 " ERROR: Kernel configuration is invalid."; \ 7375369f550SMichal Marek echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 7385369f550SMichal Marek echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 7395369f550SMichal Marek echo >&2 ; \ 7409ee4e336SSam Ravnborg /bin/false) 7419ee4e336SSam Ravnborg 742d7942413SMasahiro Yamadaendif # may-sync-config 7432042b548SMasahiro Yamadaendif # need-config 7441da177e4SLinus Torvalds 745a1c48bb1SGeert UytterhoevenKBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) 746ef6000b4SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) 747bd664f6bSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) 748bd664f6bSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) 7496f303d60SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 750a1c48bb1SGeert Uytterhoeven 75115f5db60SMasahiro Yamadaifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE 752a0f97e06SSam RavnborgKBUILD_CFLAGS += -O2 75315f5db60SMasahiro Yamadaelse ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 75415f5db60SMasahiro YamadaKBUILD_CFLAGS += -O3 75515f5db60SMasahiro Yamadaelse ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 75615f5db60SMasahiro YamadaKBUILD_CFLAGS += -Os 7571da177e4SLinus Torvaldsendif 7581da177e4SLinus Torvalds 75969102311SJiri Kosina# Tell gcc to never replace conditional load with a non-conditional one 76069102311SJiri KosinaKBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 761b1112139SSergei TrofimovichKBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) 76269102311SJiri Kosina 7631873e870SAndi Kleenifdef CONFIG_READABLE_ASM 7641873e870SAndi Kleen# Disable optimizations that make assembler listings hard to read. 7651873e870SAndi Kleen# reorder blocks reorders the control in the function 7661873e870SAndi Kleen# ipa clone creates specialized cloned functions 7671873e870SAndi Kleen# partial inlining inlines only parts of functions 7681873e870SAndi KleenKBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ 7691873e870SAndi Kleen $(call cc-option,-fno-ipa-cp-clone,) \ 7701873e870SAndi Kleen $(call cc-option,-fno-partial-inlining) 7711873e870SAndi Kleenendif 7721873e870SAndi Kleen 77308f67461SMike Frysingerifneq ($(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 791cfe17c9bSMasahiro Yamadaelse 792cfe17c9bSMasahiro Yamada 793cfe17c9bSMasahiro Yamada# These warnings generated too much noise in a regular build. 794cfe17c9bSMasahiro Yamada# Use make W=1 to enable them (see scripts/Makefile.extrawarn) 7959df3e7a7SMasahiro YamadaKBUILD_CFLAGS += -Wno-unused-but-set-variable 796e2079e93SNathan Chancellor 797e2079e93SNathan Chancellor# Warn about unmarked fall-throughs in switch statement. 798e2079e93SNathan Chancellor# Disabled for clang while comment to attribute conversion happens and 799e2079e93SNathan Chancellor# https://github.com/ClangBuiltLinux/linux/issues/636 is discussed. 800e2079e93SNathan ChancellorKBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,) 801cfe17c9bSMasahiro Yamadaendif 802cfe17c9bSMasahiro Yamada 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 831315da87cSMasahiro YamadaDEBUG_CFLAGS := 832315da87cSMasahiro Yamada 833121c5d08SMark Wielaard# Workaround for GCC versions < 5.0 834121c5d08SMark Wielaard# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801 835121c5d08SMark Wielaardifdef CONFIG_CC_IS_GCC 836315da87cSMasahiro YamadaDEBUG_CFLAGS += $(call cc-ifversion, -lt, 0500, $(call cc-option, -fno-var-tracking-assignments)) 837121c5d08SMark Wielaardendif 8382062afb4SLinus Torvalds 8391da177e4SLinus Torvaldsifdef CONFIG_DEBUG_INFO 840695afd3dSSedat Dilek 841866ced95SAndi Kleenifdef CONFIG_DEBUG_INFO_SPLIT 8429d937444SMasahiro YamadaDEBUG_CFLAGS += -gsplit-dwarf 843866ced95SAndi Kleenelse 8441e88e415SMasahiro YamadaDEBUG_CFLAGS += -g 845866ced95SAndi Kleenendif 846695afd3dSSedat Dilek 847b8a90923SNick Desaulniersifneq ($(LLVM_IAS),1) 8482288328cSBehan WebsterKBUILD_AFLAGS += -Wa,-gdwarf-2 849b8a90923SNick Desaulniersendif 850695afd3dSSedat Dilek 851a66049e2SNick Desaulniersifndef CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT 852a66049e2SNick Desaulniersdwarf-version-$(CONFIG_DEBUG_INFO_DWARF4) := 4 85398cd6f52SNick Desaulniersdwarf-version-$(CONFIG_DEBUG_INFO_DWARF5) := 5 854a66049e2SNick DesaulniersDEBUG_CFLAGS += -gdwarf-$(dwarf-version-y) 855bfaf2dd3SAndi Kleenendif 8561da177e4SLinus Torvalds 857d6f4ceb7SAndi Kleenifdef CONFIG_DEBUG_INFO_REDUCED 8581e88e415SMasahiro YamadaDEBUG_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 859e82c4bb8SAndi Kleen $(call cc-option,-fno-var-tracking) 860d6f4ceb7SAndi Kleenendif 861d6f4ceb7SAndi Kleen 86210e68b02SNick Desaulniersifdef CONFIG_DEBUG_INFO_COMPRESSED 86310e68b02SNick DesaulniersDEBUG_CFLAGS += -gz=zlib 8647b169944SArvind SankarKBUILD_AFLAGS += -gz=zlib 86510e68b02SNick DesaulniersKBUILD_LDFLAGS += --compress-debug-sections=zlib 86610e68b02SNick Desaulniersendif 86710e68b02SNick Desaulniers 868695afd3dSSedat Dilekendif # CONFIG_DEBUG_INFO 869695afd3dSSedat Dilek 8701e88e415SMasahiro YamadaKBUILD_CFLAGS += $(DEBUG_CFLAGS) 8711e88e415SMasahiro Yamadaexport DEBUG_CFLAGS 8721e88e415SMasahiro Yamada 873606576ceSSteven Rostedtifdef CONFIG_FUNCTION_TRACER 8743b15cdc1SSami Tolvanenifdef CONFIG_FTRACE_MCOUNT_USE_CC 87507d04081SVasily Gorbik CC_FLAGS_FTRACE += -mrecord-mcount 8762f4df001SVasily Gorbik ifdef CONFIG_HAVE_NOP_MCOUNT 8772f4df001SVasily Gorbik ifeq ($(call cc-option-yn, -mnop-mcount),y) 8782f4df001SVasily Gorbik CC_FLAGS_FTRACE += -mnop-mcount 8792f4df001SVasily Gorbik CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 8802f4df001SVasily Gorbik endif 8812f4df001SVasily Gorbik endif 88207d04081SVasily Gorbikendif 88322c8542dSSami Tolvanenifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL 88422c8542dSSami Tolvanen CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 88522c8542dSSami Tolvanenendif 8863b15cdc1SSami Tolvanenifdef CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT 8873b15cdc1SSami Tolvanen ifdef CONFIG_HAVE_C_RECORDMCOUNT 8883b15cdc1SSami Tolvanen BUILD_C_RECORDMCOUNT := y 8893b15cdc1SSami Tolvanen export BUILD_C_RECORDMCOUNT 8903b15cdc1SSami Tolvanen endif 8913b15cdc1SSami Tolvanenendif 892a2546faeSSteven Rostedtifdef CONFIG_HAVE_FENTRY 893f28bc3c3SVasily Gorbik ifeq ($(call cc-option-yn, -mfentry),y) 894f28bc3c3SVasily Gorbik CC_FLAGS_FTRACE += -mfentry 895f28bc3c3SVasily Gorbik CC_FLAGS_USING += -DCC_USING_FENTRY 896a2546faeSSteven Rostedt endif 897f28bc3c3SVasily Gorbikendif 898f28bc3c3SVasily Gorbikexport CC_FLAGS_FTRACE 899f28bc3c3SVasily GorbikKBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 900f28bc3c3SVasily GorbikKBUILD_AFLAGS += $(CC_FLAGS_USING) 90116444a8aSArnaldo Carvalho de Meloendif 90216444a8aSArnaldo Carvalho de Melo 90391341d4bSSam Ravnborg# We trigger additional mismatches with less inlining 90491341d4bSSam Ravnborgifdef CONFIG_DEBUG_SECTION_MISMATCH 90591341d4bSSam RavnborgKBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 90691341d4bSSam Ravnborgendif 90791341d4bSSam Ravnborg 90890ad4052SMasahiro Yamadaifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 909e85d1d65SMasahiro YamadaKBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 910e85d1d65SMasahiro YamadaLDFLAGS_vmlinux += --gc-sections 91190ad4052SMasahiro Yamadaendif 91290ad4052SMasahiro Yamada 913d08b9f0cSSami Tolvanenifdef CONFIG_SHADOW_CALL_STACK 914d08b9f0cSSami TolvanenCC_FLAGS_SCS := -fsanitize=shadow-call-stack 915d08b9f0cSSami TolvanenKBUILD_CFLAGS += $(CC_FLAGS_SCS) 916d08b9f0cSSami Tolvanenexport CC_FLAGS_SCS 917d08b9f0cSSami Tolvanenendif 918d08b9f0cSSami Tolvanen 919dc5723b0SSami Tolvanenifdef CONFIG_LTO_CLANG 920dc5723b0SSami Tolvanenifdef CONFIG_LTO_CLANG_THIN 9212b868952SAlexander LobakinCC_FLAGS_LTO := -flto=thin -fsplit-lto-unit 922dc5723b0SSami TolvanenKBUILD_LDFLAGS += --thinlto-cache-dir=$(extmod-prefix).thinlto-cache 923dc5723b0SSami Tolvanenelse 9242b868952SAlexander LobakinCC_FLAGS_LTO := -flto 925dc5723b0SSami Tolvanenendif 926dc5723b0SSami TolvanenCC_FLAGS_LTO += -fvisibility=hidden 92722d429e7SSami Tolvanen 92822d429e7SSami Tolvanen# Limit inlining across translation units to reduce binary size 92922d429e7SSami TolvanenKBUILD_LDFLAGS += -mllvm -import-instr-limit=5 930dc5723b0SSami Tolvanenendif 931dc5723b0SSami Tolvanen 932dc5723b0SSami Tolvanenifdef CONFIG_LTO 9335e95325fSSami TolvanenKBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO) 9345e95325fSSami TolvanenKBUILD_AFLAGS += -fno-lto 935dc5723b0SSami Tolvanenexport CC_FLAGS_LTO 936dc5723b0SSami Tolvanenendif 937dc5723b0SSami Tolvanen 93809c60546SFeng Tangifdef CONFIG_DEBUG_FORCE_FUNCTION_ALIGN_32B 93909c60546SFeng TangKBUILD_CFLAGS += -falign-functions=32 94009c60546SFeng Tangendif 94109c60546SFeng Tang 942e8e69931SSam Ravnborg# arch Makefile may override CC so keep this after arch Makefile is included 943e08d6de4SMasahiro YamadaNOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 944e8e69931SSam Ravnborg 9451da177e4SLinus Torvalds# warn about C99 declaration after statement 946a33e7ae2SMasahiro YamadaKBUILD_CFLAGS += -Wdeclaration-after-statement 9471da177e4SLinus Torvalds 9480bb95f80SKees Cook# Variable Length Arrays (VLAs) should not be used anywhere in the kernel 9498289f913SMasahiro YamadaKBUILD_CFLAGS += -Wvla 9500bb95f80SKees Cook 951070b98bfSSam Ravnborg# disable pointer signed / unsigned warnings in gcc 4.0 952fb073a4bSMasahiro YamadaKBUILD_CFLAGS += -Wno-pointer-sign 9531da177e4SLinus Torvalds 954217c3e01SStephen Rothwell# disable stringop warnings in gcc 8+ 955217c3e01SStephen RothwellKBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) 956217c3e01SStephen Rothwell 9575c45de21SLinus Torvalds# We'll want to enable this eventually, but it's not going away for 5.7 at least 9585c45de21SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) 95944720996SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, array-bounds) 9605a76021cSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) 9615c45de21SLinus Torvalds 962adc71920SLinus Torvalds# Another good warning that we'll want to enable eventually 963adc71920SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, restrict) 964adc71920SLinus Torvalds 96578a5255fSLinus Torvalds# Enabled with W=2, disabled by default as noisy 96678a5255fSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized) 96778a5255fSLinus Torvalds 968fe8d0a41SKirill Smelkov# disable invalid "can't wrap" optimizations for signed / pointers 9698b42cf2fSMasahiro YamadaKBUILD_CFLAGS += -fno-strict-overflow 970d0115552SLinus Torvalds 9713ce120b1SLinus Torvalds# Make sure -fstack-check isn't enabled (like gentoo apparently did) 9727d4eb0d8SMasahiro YamadaKBUILD_CFLAGS += -fno-stack-check 9733ce120b1SLinus Torvalds 9748f7f5c9fSAndi Kleen# conserve stack if available 9758f7f5c9fSAndi KleenKBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 9768f7f5c9fSAndi Kleen 977fe7c36c7SJosh Triplett# Prohibit date/time macros, which would make the build non-deterministic 97887de84c9SMasahiro YamadaKBUILD_CFLAGS += -Werror=date-time 979fe7c36c7SJosh Triplett 980ea8daa7bSDaniel Wagner# enforce correct pointer usage 981ea8daa7bSDaniel WagnerKBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) 982ea8daa7bSDaniel Wagner 983c834f0e8SKees Cook# Require designated initializers for all marked structures 984c834f0e8SKees CookKBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 985c834f0e8SKees Cook 986a73619a8SMasahiro Yamada# change __FILE__ to the relative path from the srctree 987a716bd74SDenys ZagoruiKBUILD_CPPFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 988a73619a8SMasahiro Yamada 989e0fe0bbeSMasahiro Yamada# include additional Makefiles when needed 990e0fe0bbeSMasahiro Yamadainclude-y := scripts/Makefile.extrawarn 991e0fe0bbeSMasahiro Yamadainclude-$(CONFIG_KASAN) += scripts/Makefile.kasan 992e0fe0bbeSMasahiro Yamadainclude-$(CONFIG_KCSAN) += scripts/Makefile.kcsan 993e0fe0bbeSMasahiro Yamadainclude-$(CONFIG_UBSAN) += scripts/Makefile.ubsan 994e0fe0bbeSMasahiro Yamadainclude-$(CONFIG_KCOV) += scripts/Makefile.kcov 995e0fe0bbeSMasahiro Yamadainclude-$(CONFIG_GCC_PLUGINS) += scripts/Makefile.gcc-plugins 996e0fe0bbeSMasahiro Yamada 997e0fe0bbeSMasahiro Yamadainclude $(addprefix $(srctree)/, $(include-y)) 998a86fe353SMasahiro Yamada 999132305b3SMasahiro Yamada# scripts/Makefile.gcc-plugins is intentionally included last. 1000132305b3SMasahiro Yamada# Do not add $(call cc-option,...) below this line. When you build the kernel 1001132305b3SMasahiro Yamada# from the clean source tree, the GCC plugins do not exist at this point. 1002bf5438fcSJason Baron 10038cc7af75SMasahiro Yamada# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 10048cc7af75SMasahiro YamadaKBUILD_CPPFLAGS += $(KCPPFLAGS) 10058cc7af75SMasahiro YamadaKBUILD_AFLAGS += $(KAFLAGS) 10068cc7af75SMasahiro YamadaKBUILD_CFLAGS += $(KCFLAGS) 100752bcc330SSam Ravnborg 1008a9684337SBill WendlingKBUILD_LDFLAGS_MODULE += --build-id=sha1 1009a9684337SBill WendlingLDFLAGS_vmlinux += --build-id=sha1 101018991197SRoland McGrath 10115d7d18f5SDavid Howellsifeq ($(CONFIG_STRIP_ASM_SYMS),y) 1012d79a2719SAndi KleenLDFLAGS_vmlinux += $(call ld-option, -X,) 10135d7d18f5SDavid Howellsendif 10145d7d18f5SDavid Howells 10155cf896fbSPeter Collingbourneifeq ($(CONFIG_RELR),y) 10165cf896fbSPeter CollingbourneLDFLAGS_vmlinux += --pack-dyn-relocs=relr 10175cf896fbSPeter Collingbourneendif 10185cf896fbSPeter Collingbourne 101959612b24SNathan Chancellor# We never want expected sections to be placed heuristically by the 102059612b24SNathan Chancellor# linker. All sections should be explicitly named in the linker script. 102159612b24SNathan Chancellorifdef CONFIG_LD_ORPHAN_WARN 102259612b24SNathan ChancellorLDFLAGS_vmlinux += --orphan-handling=warn 102359612b24SNathan Chancellorendif 102459612b24SNathan Chancellor 10257f3a59dbSMasahiro Yamada# Align the bit size of userspace programs with the kernel 10267f58b487SMasahiro YamadaKBUILD_USERCFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 10277f58b487SMasahiro YamadaKBUILD_USERLDFLAGS += $(filter -m32 -m64 --target=%, $(KBUILD_CFLAGS)) 10287f3a59dbSMasahiro Yamada 102980591e61SLuc Van Oostenryck# make the checker run with the right architecture 103080591e61SLuc Van OostenryckCHECKFLAGS += --arch=$(ARCH) 103180591e61SLuc Van Oostenryck 103214516765SLuc Van Oostenryck# insure the checker run with the right endianness 103314516765SLuc Van OostenryckCHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 103414516765SLuc Van Oostenryck 10351f2f01b1SLuc Van Oostenryck# the checker needs the correct machine size 10361f2f01b1SLuc Van OostenryckCHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 10371f2f01b1SLuc Van Oostenryck 10381da177e4SLinus Torvalds# Default kernel image to build when no specific target is given. 10391da177e4SLinus Torvalds# KBUILD_IMAGE may be overruled on the command line or 10401da177e4SLinus Torvalds# set in the environment 10411da177e4SLinus Torvalds# Also any assignments in arch/$(ARCH)/Makefile take precedence over 10421da177e4SLinus Torvalds# this default value 10431da177e4SLinus Torvaldsexport KBUILD_IMAGE ?= vmlinux 10441da177e4SLinus Torvalds 10451da177e4SLinus Torvalds# 10461da177e4SLinus Torvalds# INSTALL_PATH specifies where to place the updated kernel and system map 10471da177e4SLinus Torvalds# images. Default is /boot, but you can set it to other values 10481da177e4SLinus Torvaldsexport INSTALL_PATH ?= /boot 10491da177e4SLinus Torvalds 10501da177e4SLinus Torvalds# 1051f4d4ffc0SJason Cooper# INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 1052f4d4ffc0SJason Cooper# Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 1053f4d4ffc0SJason Cooper# an argument if needed. Otherwise it defaults to the kernel install path 1054f4d4ffc0SJason Cooper# 1055f4d4ffc0SJason Cooperexport INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 1056f4d4ffc0SJason Cooper 1057f4d4ffc0SJason Cooper# 10581da177e4SLinus Torvalds# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 10591da177e4SLinus Torvalds# relocations required by build roots. This is not defined in the 1060070b98bfSSam Ravnborg# makefile but the argument can be passed to make if needed. 10611da177e4SLinus Torvalds# 10621da177e4SLinus Torvalds 1063df9df036SSam RavnborgMODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 10641da177e4SLinus Torvaldsexport MODLIB 10651da177e4SLinus Torvalds 1066ac031f26STheodore Ts'o# 10672ea03891SSam Ravnborg# INSTALL_MOD_STRIP, if defined, will cause modules to be 10682ea03891SSam Ravnborg# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 10692ea03891SSam Ravnborg# the default option --strip-debug will be used. Otherwise, 1070177b241dSGilles Espinasse# INSTALL_MOD_STRIP value will be used as the options to the strip command. 10712ea03891SSam Ravnborg 1072ac031f26STheodore Ts'oifdef INSTALL_MOD_STRIP 1073ac031f26STheodore Ts'oifeq ($(INSTALL_MOD_STRIP),1) 10742ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) --strip-debug 1075ac031f26STheodore Ts'oelse 10762ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 1077ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP=1 1078ac031f26STheodore Ts'oelse 10792ea03891SSam Ravnborgmod_strip_cmd = true 1080ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP 1081ac031f26STheodore Ts'oexport mod_strip_cmd 1082ac031f26STheodore Ts'o 1083beb50df3SBertrand Jacquin# CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed 1084beb50df3SBertrand Jacquin# after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP 1085beb50df3SBertrand Jacquin# or CONFIG_MODULE_COMPRESS_XZ. 1086beb50df3SBertrand Jacquin 1087beb50df3SBertrand Jacquinmod_compress_cmd = true 1088beb50df3SBertrand Jacquinifdef CONFIG_MODULE_COMPRESS 1089beb50df3SBertrand Jacquin ifdef CONFIG_MODULE_COMPRESS_GZIP 1090e4a42c82SDenis Efremov mod_compress_cmd = $(KGZIP) -n -f 1091beb50df3SBertrand Jacquin endif # CONFIG_MODULE_COMPRESS_GZIP 1092beb50df3SBertrand Jacquin ifdef CONFIG_MODULE_COMPRESS_XZ 1093db4632c6STor Vic mod_compress_cmd = $(XZ) --lzma2=dict=2MiB -f 1094beb50df3SBertrand Jacquin endif # CONFIG_MODULE_COMPRESS_XZ 1095beb50df3SBertrand Jacquinendif # CONFIG_MODULE_COMPRESS 1096beb50df3SBertrand Jacquinexport mod_compress_cmd 1097beb50df3SBertrand Jacquin 1098d9d8d7edSMichal Marekifdef CONFIG_MODULE_SIG_ALL 10993ee550f1SDavid Woodhouse$(eval $(call config_filename,MODULE_SIG_KEY)) 11003ee550f1SDavid Woodhouse 11013ee550f1SDavid Woodhousemod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 1102e2a666d5SRusty Russellelse 1103e2a666d5SRusty Russellmod_sign_cmd = true 1104e2a666d5SRusty Russellendif 1105e2a666d5SRusty Russellexport mod_sign_cmd 1106e2a666d5SRusty Russell 1107056d28d1SRolf Eike BeerHOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf) 1108056d28d1SRolf Eike Beer 110933a57ce0SJiri Olsahas_libelf = $(call try-run,\ 1110056d28d1SRolf Eike Beer echo "int main() {}" | $(HOSTCC) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0) 111133a57ce0SJiri Olsa 111233a57ce0SJiri Olsaifdef CONFIG_STACK_VALIDATION 11139f0c18aeSJosh Poimboeuf ifeq ($(has_libelf),1) 11149f0c18aeSJosh Poimboeuf objtool_target := tools/objtool FORCE 11159f0c18aeSJosh Poimboeuf else 11169f0c18aeSJosh Poimboeuf SKIP_STACK_VALIDATION := 1 11179f0c18aeSJosh Poimboeuf export SKIP_STACK_VALIDATION 11189f0c18aeSJosh Poimboeuf endif 11199f0c18aeSJosh Poimboeufendif 11209f0c18aeSJosh Poimboeuf 112150d3a3f8SJiri OlsaPHONY += resolve_btfids_clean 112250d3a3f8SJiri Olsa 11230e1aa629SJiri Olsaresolve_btfids_O = $(abspath $(objtree))/tools/bpf/resolve_btfids 11240e1aa629SJiri Olsa 11250e1aa629SJiri Olsa# tools/bpf/resolve_btfids directory might not exist 11260e1aa629SJiri Olsa# in output directory, skip its clean in that case 112750d3a3f8SJiri Olsaresolve_btfids_clean: 11280e1aa629SJiri Olsaifneq ($(wildcard $(resolve_btfids_O)),) 11290e1aa629SJiri Olsa $(Q)$(MAKE) -sC $(srctree)/tools/bpf/resolve_btfids O=$(resolve_btfids_O) clean 11300e1aa629SJiri Olsaendif 113150d3a3f8SJiri Olsa 1132017dab34SJiri Olsaifdef CONFIG_BPF 113333a57ce0SJiri Olsaifdef CONFIG_DEBUG_INFO_BTF 113433a57ce0SJiri Olsa ifeq ($(has_libelf),1) 113533a57ce0SJiri Olsa resolve_btfids_target := tools/bpf/resolve_btfids FORCE 113633a57ce0SJiri Olsa else 113733a57ce0SJiri Olsa ERROR_RESOLVE_BTFIDS := 1 113833a57ce0SJiri Olsa endif 1139017dab34SJiri Olsaendif # CONFIG_DEBUG_INFO_BTF 1140017dab34SJiri Olsaendif # CONFIG_BPF 114133a57ce0SJiri Olsa 1142e00d8880SMasahiro YamadaPHONY += prepare0 1143e2a666d5SRusty Russell 1144bcf637f5SMasahiro Yamadaextmod-prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/) 1145394053f4SMasahiro Yamadaexport MODORDER := $(extmod-prefix)modules.order 1146bc35d4bdSMasahiro Yamadaexport MODULES_NSDEPS := $(extmod-prefix)modules.nsdeps 114747801c97SMasahiro Yamada 11481da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 1149cfc411e7SDavid Howellscore-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ 11501da177e4SLinus Torvalds 115123febe37SMasahiro Yamadavmlinux-dirs := $(patsubst %/,%,$(filter %/, \ 11521da177e4SLinus Torvalds $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 115395fb6317SMasahiro Yamada $(libs-y) $(libs-m))) 11541da177e4SLinus Torvalds 11551eaca4b9SMasahiro Yamadavmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \ 115623febe37SMasahiro Yamada $(patsubst %/,%,$(filter %/, $(core-) \ 115795fb6317SMasahiro Yamada $(drivers-) $(libs-)))) 11581da177e4SLinus Torvalds 1159b2c88554SMasahiro Yamadasubdir-modorder := $(addsuffix modules.order,$(filter %/, \ 1160b2c88554SMasahiro Yamada $(core-y) $(core-m) $(libs-y) $(libs-m) \ 1161b2c88554SMasahiro Yamada $(drivers-y) $(drivers-m))) 11621da177e4SLinus Torvalds 1163c99f3918SMasahiro Yamadabuild-dirs := $(vmlinux-dirs) 116476cd306dSMasahiro Yamadaclean-dirs := $(vmlinux-alldirs) 1165c99f3918SMasahiro Yamada 11661f2bfbd0SSam Ravnborg# Externally visible symbols (used by link-vmlinux.sh) 1167f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS := $(head-y) $(patsubst %/,%/built-in.a, $(core-y)) 1168f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS += $(addsuffix built-in.a, $(filter %/, $(libs-y))) 1169f0d50ca0SMasahiro Yamadaifdef CONFIG_MODULES 1170f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y))) 1171f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y)) 1172f0d50ca0SMasahiro Yamadaelse 1173f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y)) 1174f0d50ca0SMasahiro Yamadaendif 1175f0d50ca0SMasahiro YamadaKBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y)) 1176f0d50ca0SMasahiro Yamada 1177f0d50ca0SMasahiro Yamadaexport KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS 117895698570SSam Ravnborgexport KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 117985f0ae7eSMasahiro Yamada# used by scripts/Makefile.package 1180233c741dSMasahiro Yamadaexport KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools) 11811da177e4SLinus Torvalds 1182d151e971SMasahiro Yamadavmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) 11831da177e4SLinus Torvalds 11843fdc7d3fSMasahiro Yamada# Recurse until adjust_autoksyms.sh is satisfied 11853fdc7d3fSMasahiro YamadaPHONY += autoksyms_recursive 11862441e78bSNicolas Pitreifdef CONFIG_TRIM_UNUSED_KSYMS 11871f50b80aSMasahiro Yamada# For the kernel to actually contain only the needed exported symbols, 11881f50b80aSMasahiro Yamada# we have to build modules as well to determine what those symbols are. 11891f50b80aSMasahiro Yamada# (this can be evaluated only once include/config/auto.conf has been included) 11901f50b80aSMasahiro YamadaKBUILD_MODULES := 1 1191fb2d99beSMasahiro Yamada 1192fb2d99beSMasahiro Yamadaautoksyms_recursive: descend modules.order 1193fb2d99beSMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ 1194fb2d99beSMasahiro Yamada "$(MAKE) -f $(srctree)/Makefile vmlinux" 11951f50b80aSMasahiro Yamadaendif 11961f50b80aSMasahiro Yamada 119707a422bbSMasahiro Yamadaautoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) 119807a422bbSMasahiro Yamada 119988694cffSQuentin Perretquiet_cmd_autoksyms_h = GEN $@ 120088694cffSQuentin Perret cmd_autoksyms_h = mkdir -p $(dir $@); \ 120188694cffSQuentin Perret $(CONFIG_SHELL) $(srctree)/scripts/gen_autoksyms.sh $@ 120288694cffSQuentin Perret 120307a422bbSMasahiro Yamada$(autoksyms_h): 120488694cffSQuentin Perret $(call cmd,autoksyms_h) 120523121ca2SNicolas Pitre 1206fbe6e37dSNicholas PigginARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) 1207fbe6e37dSNicholas Piggin 1208fbe6e37dSNicholas Piggin# Final link of vmlinux with optional arch pass after final link 1209fbe6e37dSNicholas Piggincmd_link-vmlinux = \ 12103ec8a5b3SMasahiro Yamada $(CONFIG_SHELL) $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \ 1211fbe6e37dSNicholas Piggin $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 12122441e78bSNicolas Pitre 12133fdc7d3fSMasahiro Yamadavmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE 12140b956e20SRasmus Villemoes +$(call if_changed_dep,link-vmlinux) 1215741f98feSSam Ravnborg 1216392885eeSMasahiro Yamadatargets := vmlinux 1217392885eeSMasahiro Yamada 12181da177e4SLinus Torvalds# The actual objects are generated when descending, 12191da177e4SLinus Torvalds# make sure no implicit rule kicks in 1220b2c88554SMasahiro Yamada$(sort $(vmlinux-deps) $(subdir-modorder)): descend ; 12211da177e4SLinus Torvalds 1222ba97df45SMasahiro Yamadafilechk_kernel.release = \ 12230d0e7718SMichal Marek echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 12240d0e7718SMichal Marek 122583a35e36SGeert Uytterhoeven# Store (new) KERNELRELEASE string in include/config/kernel.release 122624512795SMasahiro Yamadainclude/config/kernel.release: FORCE 12270d0e7718SMichal Marek $(call filechk,kernel.release) 1228cb58455cSSam Ravnborg 1229d8821622SMasahiro Yamada# Additional helpers built in scripts/ 1230d8821622SMasahiro Yamada# Carefully list dependencies so we do not try to build scripts twice 1231d8821622SMasahiro Yamada# in parallel 1232d8821622SMasahiro YamadaPHONY += scripts 123360df1aeeSMasahiro Yamadascripts: scripts_basic scripts_dtc 1234d8821622SMasahiro Yamada $(Q)$(MAKE) $(build)=$(@) 1235cb58455cSSam Ravnborg 12361da177e4SLinus Torvalds# Things we need to do before we recursively start building the kernel 12375bb78269SSam Ravnborg# or the modules are listed in "prepare". 12385bb78269SSam Ravnborg# A multi level approach is used. prepareN is processed before prepareN-1. 12395bb78269SSam Ravnborg# archprepare is used in arch Makefiles and when processed asm symlink, 12405bb78269SSam Ravnborg# version.h and scripts_basic is processed / created. 12411da177e4SLinus Torvalds 1242a5139fb3SMasahiro YamadaPHONY += prepare archprepare 12435bb78269SSam Ravnborg 124436de077bSMasahiro Yamadaarchprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \ 12453044dd05SMasahiro Yamada asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h \ 12463044dd05SMasahiro Yamada include/generated/autoconf.h 12475bb78269SSam Ravnborg 124865bba042SMasahiro Yamadaprepare0: archprepare 124960df1aeeSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts/mod 12508d36a623SSam Ravnborg $(Q)$(MAKE) $(build)=. 125186feeaa8SSam Ravnborg 12521da177e4SLinus Torvalds# All the preparing.. 125333a57ce0SJiri Olsaprepare: prepare0 prepare-objtool prepare-resolve_btfids 1254b9ab5ebbSJosh Poimboeuf 12552c1f4f12SMasahiro Yamada# Support for using generic headers in asm-generic 12567d0e5c20SMasahiro Yamadaasm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj 12577d0e5c20SMasahiro Yamada 12582c1f4f12SMasahiro YamadaPHONY += asm-generic uapi-asm-generic 12592c1f4f12SMasahiro Yamadaasm-generic: uapi-asm-generic 1260037fc336SMasahiro Yamada $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm \ 1261037fc336SMasahiro Yamada generic=include/asm-generic 12622c1f4f12SMasahiro Yamadauapi-asm-generic: 1263037fc336SMasahiro Yamada $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm \ 1264037fc336SMasahiro Yamada generic=include/uapi/asm-generic 12652c1f4f12SMasahiro Yamada 126633a57ce0SJiri OlsaPHONY += prepare-objtool prepare-resolve_btfids 12673b27a0c8SJosh Poimboeufprepare-objtool: $(objtool_target) 1268ef7cfd00SMasahiro Yamadaifeq ($(SKIP_STACK_VALIDATION),1) 126922c8542dSSami Tolvanenifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL 127022c8542dSSami Tolvanen @echo "error: Cannot generate __mcount_loc for CONFIG_DYNAMIC_FTRACE=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 127122c8542dSSami Tolvanen @false 127222c8542dSSami Tolvanenendif 1273ef7cfd00SMasahiro Yamadaifdef CONFIG_UNWINDER_ORC 1274ef7cfd00SMasahiro Yamada @echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 1275ef7cfd00SMasahiro Yamada @false 1276ef7cfd00SMasahiro Yamadaelse 1277ef7cfd00SMasahiro Yamada @echo "warning: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 1278ef7cfd00SMasahiro Yamadaendif 1279ef7cfd00SMasahiro Yamadaendif 12801da177e4SLinus Torvalds 128133a57ce0SJiri Olsaprepare-resolve_btfids: $(resolve_btfids_target) 128233a57ce0SJiri Olsaifeq ($(ERROR_RESOLVE_BTFIDS),1) 128333a57ce0SJiri Olsa @echo "error: Cannot resolve BTF IDs for CONFIG_DEBUG_INFO_BTF, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2 128433a57ce0SJiri Olsa @false 128533a57ce0SJiri Olsaendif 12861da177e4SLinus Torvalds# Generate some files 12871da177e4SLinus Torvalds# --------------------------------------------------------------------------- 12881da177e4SLinus Torvalds 12891da177e4SLinus Torvalds# KERNELRELEASE can change from a few different places, meaning version.h 12901da177e4SLinus Torvalds# needs to be updated, so this check is forced on all builds 12911da177e4SLinus Torvalds 12921da177e4SLinus Torvaldsuts_len := 64 129363104eecSSam Ravnborgdefine filechk_utsrelease.h 12941da177e4SLinus Torvalds if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 12951da177e4SLinus Torvalds echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 12961da177e4SLinus Torvalds exit 1; \ 12971da177e4SLinus Torvalds fi; \ 1298ad774086SMasahiro Yamada echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" 12991da177e4SLinus Torvaldsendef 13001da177e4SLinus Torvalds 130163104eecSSam Ravnborgdefine filechk_version.h 13029b82f13eSSasha Levin if [ $(SUBLEVEL) -gt 255 ]; then \ 1303ad774086SMasahiro Yamada echo \#define LINUX_VERSION_CODE $(shell \ 1304207da4c8SMasahiro Yamada expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + 255); \ 13059b82f13eSSasha Levin else \ 13069b82f13eSSasha Levin echo \#define LINUX_VERSION_CODE $(shell \ 1307207da4c8SMasahiro Yamada expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 13089b82f13eSSasha Levin fi; \ 13099b82f13eSSasha Levin echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + \ 131088a68672SSasha Levin ((c) > 255 ? 255 : (c)))'; \ 131188a68672SSasha Levin echo \#define LINUX_VERSION_MAJOR $(VERSION); \ 131288a68672SSasha Levin echo \#define LINUX_VERSION_PATCHLEVEL $(PATCHLEVEL); \ 131388a68672SSasha Levin echo \#define LINUX_VERSION_SUBLEVEL $(SUBLEVEL) 131463104eecSSam Ravnborgendef 131563104eecSSam Ravnborg 1316207da4c8SMasahiro Yamada$(version_h): PATCHLEVEL := $(if $(PATCHLEVEL), $(PATCHLEVEL), 0) 1317207da4c8SMasahiro Yamada$(version_h): SUBLEVEL := $(if $(SUBLEVEL), $(SUBLEVEL), 0) 131843fee2b2SMasahiro Yamada$(version_h): FORCE 13191da177e4SLinus Torvalds $(call filechk,version.h) 13201da177e4SLinus Torvalds 1321273b281fSSam Ravnborginclude/generated/utsrelease.h: include/config/kernel.release FORCE 132263104eecSSam Ravnborg $(call filechk,utsrelease.h) 132363104eecSSam Ravnborg 1324179efcb4SVegard NossumPHONY += headerdep 1325179efcb4SVegard Nossumheaderdep: 13269663d989SPeter Foley $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 13279663d989SPeter Foley $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1328179efcb4SVegard Nossum 13291da177e4SLinus Torvalds# --------------------------------------------------------------------------- 13308d730cfbSDavid Woodhouse# Kernel headers 13318d730cfbSDavid Woodhouse 1332e6883b18SSam Ravnborg#Default location for installed headers 1333e6883b18SSam Ravnborgexport INSTALL_HDR_PATH = $(objtree)/usr 1334e6883b18SSam Ravnborg 133559b2bd05SMasahiro Yamadaquiet_cmd_headers_install = INSTALL $(INSTALL_HDR_PATH)/include 133659b2bd05SMasahiro Yamada cmd_headers_install = \ 133759b2bd05SMasahiro Yamada mkdir -p $(INSTALL_HDR_PATH); \ 133859b2bd05SMasahiro Yamada rsync -mrl --include='*/' --include='*\.h' --exclude='*' \ 133959b2bd05SMasahiro Yamada usr/include $(INSTALL_HDR_PATH) 13406d716275SDavid Woodhouse 13418d730cfbSDavid WoodhousePHONY += headers_install 134259b2bd05SMasahiro Yamadaheaders_install: headers 134359b2bd05SMasahiro Yamada $(call cmd,headers_install) 13444f193362SPaul Smith 13451da177e4SLinus TorvaldsPHONY += archheaders archscripts 13461da177e4SLinus Torvalds 1347a5bae54cSMasahiro Yamadahdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj 13481da177e4SLinus Torvalds 134959b2bd05SMasahiro YamadaPHONY += headers 135059b2bd05SMasahiro Yamadaheaders: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts 13519d022c54SMasahiro Yamada $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ 13522fb9b1bdSSam Ravnborg $(error Headers not exportable for the $(SRCARCH) architecture)) 1353d5470d14SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=include/uapi 1354d5470d14SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi 13551f85712eSMike Frysinger 13567ecaf069SMasahiro Yamada# Deprecated. It is no-op now. 135768475359SDavid WoodhousePHONY += headers_check 13587ecaf069SMasahiro Yamadaheaders_check: 1359609bbb4dSMasahiro Yamada @echo >&2 "=================== WARNING ===================" 1360609bbb4dSMasahiro Yamada @echo >&2 "Since Linux 5.5, 'make headers_check' is no-op," 1361609bbb4dSMasahiro Yamada @echo >&2 "and will be removed after Linux 5.15 release." 1362609bbb4dSMasahiro Yamada @echo >&2 "Please remove headers_check from your scripts." 1363609bbb4dSMasahiro Yamada @echo >&2 "===============================================" 136468475359SDavid Woodhouse 1365e949f4c2SMasahiro Yamadaifdef CONFIG_HEADERS_INSTALL 136659b2bd05SMasahiro Yamadaprepare: headers 1367e949f4c2SMasahiro Yamadaendif 13681da177e4SLinus Torvalds 1369bdd7714bSMasahiro YamadaPHONY += scripts_unifdef 1370bdd7714bSMasahiro Yamadascripts_unifdef: scripts_basic 1371bdd7714bSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1372bdd7714bSMasahiro Yamada 13731da177e4SLinus Torvalds# --------------------------------------------------------------------------- 13745a5da78bSShuah Khan# Kernel selftest 13755a5da78bSShuah Khan 13765a5da78bSShuah KhanPHONY += kselftest 13775a5da78bSShuah Khankselftest: 13782bc84526SShuah Khan $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 13795a5da78bSShuah Khan 138017eac6c2SShuah Khankselftest-%: FORCE 138117eac6c2SShuah Khan $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests $* 1382dcb825a9SWang Long 13833d6dee7aSBamvor Jian ZhangPHONY += kselftest-merge 13843d6dee7aSBamvor Jian Zhangkselftest-merge: 13853d6dee7aSBamvor Jian Zhang $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 13866d3db46cSDan Rue $(Q)find $(srctree)/tools/testing/selftests -name config | \ 13876d3db46cSDan Rue xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config 13883e4c6948SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 13893d6dee7aSBamvor Jian Zhang 13905a5da78bSShuah Khan# --------------------------------------------------------------------------- 139137c8a5faSRob Herring# Devicetree files 139237c8a5faSRob Herring 139337c8a5faSRob Herringifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) 139437c8a5faSRob Herringdtstree := arch/$(SRCARCH)/boot/dts 139537c8a5faSRob Herringendif 139637c8a5faSRob Herring 139737c8a5faSRob Herringifneq ($(dtstree),) 139837c8a5faSRob Herring 1399a5139fb3SMasahiro Yamada%.dtb: include/config/kernel.release scripts_dtc 140037c8a5faSRob Herring $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 140137c8a5faSRob Herring 1402ce88c9c7SViresh Kumar%.dtbo: include/config/kernel.release scripts_dtc 1403ce88c9c7SViresh Kumar $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ 1404ce88c9c7SViresh Kumar 1405c473a8d0SMasahiro YamadaPHONY += dtbs dtbs_install dtbs_check 1406b5154bf6SMasahiro Yamadadtbs: include/config/kernel.release scripts_dtc 140737c8a5faSRob Herring $(Q)$(MAKE) $(build)=$(dtstree) 140837c8a5faSRob Herring 1409b5154bf6SMasahiro Yamadaifneq ($(filter dtbs_check, $(MAKECMDGOALS)),) 1410e10c4321SMasahiro Yamadaexport CHECK_DTBS=y 1411b5154bf6SMasahiro Yamadadtbs: dt_binding_check 1412b5154bf6SMasahiro Yamadaendif 1413b5154bf6SMasahiro Yamada 1414b5154bf6SMasahiro Yamadadtbs_check: dtbs 14154f0e3a57SRob Herring 141637c8a5faSRob Herringdtbs_install: 14172431f22aSMasahiro Yamada $(Q)$(MAKE) $(dtbinst)=$(dtstree) dst=$(INSTALL_DTBS_PATH) 141837c8a5faSRob Herring 141937c8a5faSRob Herringifdef CONFIG_OF_EARLY_FLATTREE 142037c8a5faSRob Herringall: dtbs 142137c8a5faSRob Herringendif 142237c8a5faSRob Herring 142337c8a5faSRob Herringendif 142437c8a5faSRob Herring 142537c8a5faSRob HerringPHONY += scripts_dtc 142637c8a5faSRob Herringscripts_dtc: scripts_basic 142737c8a5faSRob Herring $(Q)$(MAKE) $(build)=scripts/dtc 142837c8a5faSRob Herring 1429e10c4321SMasahiro Yamadaifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),) 1430e10c4321SMasahiro Yamadaexport CHECK_DT_BINDING=y 1431e10c4321SMasahiro Yamadaendif 1432e10c4321SMasahiro Yamada 1433c473a8d0SMasahiro YamadaPHONY += dt_binding_check 14344f0e3a57SRob Herringdt_binding_check: scripts_dtc 14354f0e3a57SRob Herring $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings 14364f0e3a57SRob Herring 143737c8a5faSRob Herring# --------------------------------------------------------------------------- 14381da177e4SLinus Torvalds# Modules 14391da177e4SLinus Torvalds 14401da177e4SLinus Torvaldsifdef CONFIG_MODULES 14411da177e4SLinus Torvalds 14421da177e4SLinus Torvalds# By default, build modules as well 14431da177e4SLinus Torvalds 144473d1393eSMichal Marekall: modules 14451da177e4SLinus Torvalds 14464b50c8c4SMasahiro Yamada# When we're building modules with modversions, we need to consider 14474b50c8c4SMasahiro Yamada# the built-in objects during the descend as well, in order to 14484b50c8c4SMasahiro Yamada# make sure the checksums are up to date before we record them. 14494b50c8c4SMasahiro Yamadaifdef CONFIG_MODVERSIONS 14504b50c8c4SMasahiro Yamada KBUILD_BUILTIN := 1 14514b50c8c4SMasahiro Yamadaendif 14524b50c8c4SMasahiro Yamada 14531da177e4SLinus Torvalds# Build modules 1454551559e1STejun Heo# 1455551559e1STejun Heo# A module can be listed more than once in obj-m resulting in 1456551559e1STejun Heo# duplicate lines in modules.order files. Those are removed 1457551559e1STejun Heo# using awk while concatenating to the final file. 14581da177e4SLinus Torvalds 14594f193362SPaul SmithPHONY += modules 1460596b0474SMasahiro Yamadamodules: $(if $(KBUILD_BUILTIN),vmlinux) modules_check modules_prepare 14611da177e4SLinus Torvalds 14628451791dSMasahiro YamadaPHONY += modules_check 14638451791dSMasahiro Yamadamodules_check: modules.order 14648451791dSMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $< 14651da177e4SLinus Torvalds 1466b2c88554SMasahiro Yamadacmd_modules_order = $(AWK) '!x[$$0]++' $(real-prereqs) > $@ 1467b2c88554SMasahiro Yamada 1468b2c88554SMasahiro Yamadamodules.order: $(subdir-modorder) FORCE 1469b2c88554SMasahiro Yamada $(call if_changed,modules_order) 1470b2c88554SMasahiro Yamada 1471b2c88554SMasahiro Yamadatargets += modules.order 1472a6c36632SMichal Marek 14731da177e4SLinus Torvalds# Target to prepare building external modules 14744f193362SPaul SmithPHONY += modules_prepare 1475059bc9fcSMasahiro Yamadamodules_prepare: prepare 1476596b0474SMasahiro Yamada $(Q)$(MAKE) $(build)=scripts scripts/module.lds 14771da177e4SLinus Torvalds 1478*3e3005dfSMasahiro Yamadamodules_install: __modinst_pre 1479*3e3005dfSMasahiro YamadaPHONY += __modinst_pre 1480*3e3005dfSMasahiro Yamada__modinst_pre: 14811da177e4SLinus Torvalds @rm -rf $(MODLIB)/kernel 14821da177e4SLinus Torvalds @rm -f $(MODLIB)/source 14831da177e4SLinus Torvalds @mkdir -p $(MODLIB)/kernel 14848e9b4667SMasahiro Yamada @ln -s $(abspath $(srctree)) $(MODLIB)/source 14851da177e4SLinus Torvalds @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 14861da177e4SLinus Torvalds rm -f $(MODLIB)/build ; \ 14877e1c0477SMichal Marek ln -s $(CURDIR) $(MODLIB)/build ; \ 14881da177e4SLinus Torvalds fi 14891bd9a468SMasahiro Yamada @sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order 14902c6d9636SMasahiro Yamada @cp -f modules.builtin $(MODLIB)/ 14912c6d9636SMasahiro Yamada @cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/ 14921da177e4SLinus Torvalds 1493d890f510SJosh Boyerifeq ($(CONFIG_MODULE_SIG), y) 1494d890f510SJosh BoyerPHONY += modules_sign 1495d890f510SJosh Boyermodules_sign: 1496d890f510SJosh Boyer $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1497d890f510SJosh Boyerendif 1498d890f510SJosh Boyer 14991da177e4SLinus Torvaldsendif # CONFIG_MODULES 15001da177e4SLinus Torvalds 15011da177e4SLinus Torvalds### 15021da177e4SLinus Torvalds# Cleaning is done on three levels. 15031da177e4SLinus Torvalds# make clean Delete most generated files 15041da177e4SLinus Torvalds# Leave enough to build external modules 15051da177e4SLinus Torvalds# make mrproper Delete the current configuration, and all generated files 15061da177e4SLinus Torvalds# make distclean Remove editor backup files, patch leftover files and the like 15071da177e4SLinus Torvalds 15081da177e4SLinus Torvalds# Directories & files removed with 'make clean' 150969bc8d38SMasahiro YamadaCLEAN_FILES += include/ksym vmlinux.symvers modules-only.symvers \ 15103d32285fSMasahiro Yamada modules.builtin modules.builtin.modinfo modules.nsdeps \ 15114c7858b9SMasahiro Yamada compile_commands.json .thinlto-cache 15121da177e4SLinus Torvalds 15131da177e4SLinus Torvalds# Directories & files removed with 'make mrproper' 15140663c68cSMasahiro YamadaMRPROPER_FILES += include/config include/generated \ 151546a63d4bSMasahiro Yamada arch/$(SRCARCH)/include/generated .tmp_objdiff \ 15160663c68cSMasahiro Yamada debian snap tar-install \ 15170663c68cSMasahiro Yamada .config .config.old .version \ 151846457133SMasahiro Yamada Module.symvers \ 1519fb117949SDavid Woodhouse signing_key.pem signing_key.priv signing_key.x509 \ 1520fb117949SDavid Woodhouse x509.genkey extra_certificates signing_key.x509.keyid \ 152146a63d4bSMasahiro Yamada signing_key.x509.signer vmlinux-gdb.py \ 152246a63d4bSMasahiro Yamada *.spec 15231da177e4SLinus Torvalds 152446457133SMasahiro Yamada# Directories & files removed with 'make distclean' 15254c7858b9SMasahiro YamadaDISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS 152646457133SMasahiro Yamada 15271da177e4SLinus Torvalds# clean - Delete most, but leave enough to build external modules 15281da177e4SLinus Torvalds# 15291da177e4SLinus Torvaldsclean: rm-files := $(CLEAN_FILES) 15301da177e4SLinus Torvalds 153176cd306dSMasahiro YamadaPHONY += archclean vmlinuxclean 15321da177e4SLinus Torvalds 1533bd1ee804SPawel Mollvmlinuxclean: 1534bd1ee804SPawel Moll $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1535fbe6e37dSNicholas Piggin $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1536bd1ee804SPawel Moll 153750d3a3f8SJiri Olsaclean: archclean vmlinuxclean resolve_btfids_clean 15381da177e4SLinus Torvalds 15391da177e4SLinus Torvalds# mrproper - Delete all generated files, including .config 15401da177e4SLinus Torvalds# 15411da177e4SLinus Torvaldsmrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1542cb43fb57SMauro Carvalho Chehabmrproper-dirs := $(addprefix _mrproper_,scripts) 15431da177e4SLinus Torvalds 1544b421b8a6SMasahiro YamadaPHONY += $(mrproper-dirs) mrproper 15451da177e4SLinus Torvalds$(mrproper-dirs): 15461da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 15471da177e4SLinus Torvalds 1548b421b8a6SMasahiro Yamadamrproper: clean $(mrproper-dirs) 15491da177e4SLinus Torvalds $(call cmd,rmfiles) 15501da177e4SLinus Torvalds 15511da177e4SLinus Torvalds# distclean 15521da177e4SLinus Torvalds# 155346457133SMasahiro Yamadadistclean: rm-files := $(wildcard $(DISTCLEAN_FILES)) 155446457133SMasahiro Yamada 15554f193362SPaul SmithPHONY += distclean 15561da177e4SLinus Torvalds 15571da177e4SLinus Torvaldsdistclean: mrproper 155846457133SMasahiro Yamada $(call cmd,rmfiles) 15591da177e4SLinus Torvalds @find $(srctree) $(RCS_FIND_IGNORE) \ 15601da177e4SLinus Torvalds \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1561f78271dfSMasahiro Yamada -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1562f78271dfSMasahiro Yamada -o -name 'core' \) \ 15631da177e4SLinus Torvalds -type f -print | xargs rm -f 15641da177e4SLinus Torvalds 15651da177e4SLinus Torvalds 15661da177e4SLinus Torvalds# Packaging of the kernel to various formats 15671da177e4SLinus Torvalds# --------------------------------------------------------------------------- 15681da177e4SLinus Torvalds 1569bafb6747SArnaldo Carvalho de Melo%src-pkg: FORCE 1570000ec95fSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 1571031ecc6dSZach Brown%pkg: include/config/kernel.release FORCE 1572000ec95fSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.package $@ 15731da177e4SLinus Torvalds 15741da177e4SLinus Torvalds# Brief documentation of the typical targets used 15751da177e4SLinus Torvalds# --------------------------------------------------------------------------- 15761da177e4SLinus Torvalds 15775dffbe81SSegher Boessenkoolboards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1578a1e7b7bbSKonstantin Khlebnikovboards := $(sort $(notdir $(boards))) 15795dffbe81SSegher Boessenkoolboard-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 15805dffbe81SSegher Boessenkoolboard-dirs := $(sort $(notdir $(board-dirs:/=))) 15811da177e4SLinus Torvalds 1582fe69b420SMasahiro YamadaPHONY += help 15831da177e4SLinus Torvaldshelp: 15841da177e4SLinus Torvalds @echo 'Cleaning targets:' 15855ea084efSSamuel Tardieu @echo ' clean - Remove most generated files but keep the config and' 15865cc8d246SJesper Juhl @echo ' enough build support to build external modules' 15875ea084efSSamuel Tardieu @echo ' mrproper - Remove all generated files + config + various backup files' 15885cc8d246SJesper Juhl @echo ' distclean - mrproper + remove editor backup and patch files' 15891da177e4SLinus Torvalds @echo '' 15901da177e4SLinus Torvalds @echo 'Configuration targets:' 15911da177e4SLinus Torvalds @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 15921da177e4SLinus Torvalds @echo '' 15931da177e4SLinus Torvalds @echo 'Other generic targets:' 15941da177e4SLinus Torvalds @echo ' all - Build all targets marked with [*]' 15951da177e4SLinus Torvalds @echo '* vmlinux - Build the bare kernel' 15961da177e4SLinus Torvalds @echo '* modules - Build all modules' 15979cc5d74cSBodo Eggert @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 15981da177e4SLinus Torvalds @echo ' dir/ - Build all files in dir and below' 159940ab87a4SWang YanQing @echo ' dir/file.[ois] - Build specified target only' 1600433db3e2SVinÃcius Tinti @echo ' dir/file.ll - Build the LLVM assembly file' 1601433db3e2SVinÃcius Tinti @echo ' (requires compiler support for LLVM assembly generation)' 160262718979SJoe Perches @echo ' dir/file.lst - Build specified mixed source/assembly target only' 160362718979SJoe Perches @echo ' (requires a recent binutils and recent build (System.map))' 1604155ad605SSam Ravnborg @echo ' dir/file.ko - Build module including final link' 1605c4d5ee67SRobert P. J. Day @echo ' modules_prepare - Set up for building external modules' 16061da177e4SLinus Torvalds @echo ' tags/TAGS - Generate tags file for editors' 16071da177e4SLinus Torvalds @echo ' cscope - Generate cscope index' 1608f4ed1009SJianbin Kang @echo ' gtags - Generate GNU GLOBAL index' 16093f1d9a6cSMichal Marek @echo ' kernelrelease - Output the release version string (use with make -s)' 16103f1d9a6cSMichal Marek @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 16113f1d9a6cSMichal Marek @echo ' image_name - Output the image name (use with make -s)' 16122fb9b1bdSSam Ravnborg @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 161359df3230SGeert Uytterhoeven echo ' (default: $(INSTALL_HDR_PATH))'; \ 16142fb9b1bdSSam Ravnborg echo '' 161531b8cc80SRandy Dunlap @echo 'Static analysers:' 16161da177e4SLinus Torvalds @echo ' checkstack - Generate a list of stack hogs' 1617aa025e7dSSam Ravnborg @echo ' versioncheck - Sanity check on version.h usage' 1618ec2d987fSRandy Dunlap @echo ' includecheck - Check for duplicate included header files' 1619295ac051SAdrian Bunk @echo ' export_report - List the usages of all exported symbols' 162074425eeeSNicolas Palix @echo ' headerdep - Detect inclusion cycles in headers' 16217f855fc8SMasahiro Yamada @echo ' coccicheck - Check with Coccinelle' 16226ad7cbc0SNathan Huckleberry @echo ' clang-analyzer - Check with clang static analyzer' 16236ad7cbc0SNathan Huckleberry @echo ' clang-tidy - Check with clang-tidy' 162474425eeeSNicolas Palix @echo '' 1625eb8305aeSMatthias Maennich @echo 'Tools:' 1626eb8305aeSMatthias Maennich @echo ' nsdeps - Generate missing symbol namespace dependencies' 1627eb8305aeSMatthias Maennich @echo '' 162831b8cc80SRandy Dunlap @echo 'Kernel selftest:' 1629e51d8dacSShuah Khan @echo ' kselftest - Build and run kernel selftest' 16305a5da78bSShuah Khan @echo ' Build, install, and boot kernel before' 16315a5da78bSShuah Khan @echo ' running kselftest on it' 1632e51d8dacSShuah Khan @echo ' Run as root for full coverage' 1633e51d8dacSShuah Khan @echo ' kselftest-all - Build kernel selftest' 1634e51d8dacSShuah Khan @echo ' kselftest-install - Build and install kernel selftest' 1635dcb825a9SWang Long @echo ' kselftest-clean - Remove all generated kselftest files' 1636e51d8dacSShuah Khan @echo ' kselftest-merge - Merge all the config dependencies of' 1637e51d8dacSShuah Khan @echo ' kselftest to existing .config.' 16385a5da78bSShuah Khan @echo '' 163937c8a5faSRob Herring @$(if $(dtstree), \ 164037c8a5faSRob Herring echo 'Devicetree:'; \ 164137c8a5faSRob Herring echo '* dtbs - Build device tree blobs for enabled boards'; \ 164237c8a5faSRob Herring echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ 16437aa8dd91SStephen Boyd echo ' dt_binding_check - Validate device tree binding documents'; \ 16447aa8dd91SStephen Boyd echo ' dtbs_check - Validate device tree source files';\ 164537c8a5faSRob Herring echo '') 164637c8a5faSRob Herring 164731b8cc80SRandy Dunlap @echo 'Userspace tools targets:' 164831b8cc80SRandy Dunlap @echo ' use "make tools/help"' 164931b8cc80SRandy Dunlap @echo ' or "cd tools; make help"' 165031b8cc80SRandy Dunlap @echo '' 16511da177e4SLinus Torvalds @echo 'Kernel packaging:' 1652000ec95fSMasahiro Yamada @$(MAKE) -f $(srctree)/scripts/Makefile.package help 16531da177e4SLinus Torvalds @echo '' 16541da177e4SLinus Torvalds @echo 'Documentation targets:' 1655cb43fb57SMauro Carvalho Chehab @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 16561da177e4SLinus Torvalds @echo '' 165701dee188SAndres Salomon @echo 'Architecture specific targets ($(SRCARCH)):' 16581da177e4SLinus Torvalds @$(if $(archhelp),$(archhelp),\ 165901dee188SAndres Salomon echo ' No architecture specific help defined for $(SRCARCH)') 16601da177e4SLinus Torvalds @echo '' 16611da177e4SLinus Torvalds @$(if $(boards), \ 16621da177e4SLinus Torvalds $(foreach b, $(boards), \ 16634234448bSGeert Uytterhoeven printf " %-27s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 16641da177e4SLinus Torvalds echo '') 16655dffbe81SSegher Boessenkool @$(if $(board-dirs), \ 16665dffbe81SSegher Boessenkool $(foreach b, $(board-dirs), \ 16675dffbe81SSegher Boessenkool printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 16685dffbe81SSegher Boessenkool printf " %-16s - Show all of the above\\n" help-boards; \ 16695dffbe81SSegher Boessenkool echo '') 16701da177e4SLinus Torvalds 16711da177e4SLinus Torvalds @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 167245d506bdSSam Ravnborg @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 16731da177e4SLinus Torvalds @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1674a64c0440SGeert Uytterhoeven @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK' 1675a64c0440SGeert Uytterhoeven @echo ' (sparse by default)' 1676701842e3SDustin Kirkland @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1677af07ce3eSIngo Molnar @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1678e27128dbSMasahiro Yamada @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where' 167928bc20dcSSam Ravnborg @echo ' 1: warnings which may be relevant and do not occur too often' 168028bc20dcSSam Ravnborg @echo ' 2: warnings which occur quite often but may still be relevant' 168128bc20dcSSam Ravnborg @echo ' 3: more obscure warnings, can most likely be ignored' 1682a6de553dSMichal Marek @echo ' Multiple levels can be combined with W=12 or W=123' 16831da177e4SLinus Torvalds @echo '' 16841da177e4SLinus Torvalds @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 16851da177e4SLinus Torvalds @echo 'For further info see the ./README file' 16861da177e4SLinus Torvalds 16871da177e4SLinus Torvalds 16885dffbe81SSegher Boessenkoolhelp-board-dirs := $(addprefix help-,$(board-dirs)) 16895dffbe81SSegher Boessenkool 16905dffbe81SSegher Boessenkoolhelp-boards: $(help-board-dirs) 16915dffbe81SSegher Boessenkool 1692fbae4d58SMichal Marekboards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 16935dffbe81SSegher Boessenkool 16945dffbe81SSegher Boessenkool$(help-board-dirs): help-%: 16955dffbe81SSegher Boessenkool @echo 'Architecture specific targets ($(SRCARCH) $*):' 16965dffbe81SSegher Boessenkool @$(if $(boards-per-dir), \ 16975dffbe81SSegher Boessenkool $(foreach b, $(boards-per-dir), \ 16985dffbe81SSegher Boessenkool printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 16995dffbe81SSegher Boessenkool echo '') 17005dffbe81SSegher Boessenkool 17015dffbe81SSegher Boessenkool 17021da177e4SLinus Torvalds# Documentation targets 17031da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1704e8939222SJani NikulaDOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1705e8939222SJani Nikula linkcheckdocs dochelp refcheckdocs 170622cba31bSJani NikulaPHONY += $(DOC_TARGETS) 1707bc7b752aSMasahiro Yamada$(DOC_TARGETS): 1708cb43fb57SMauro Carvalho Chehab $(Q)$(MAKE) $(build)=Documentation $@ 17091da177e4SLinus Torvalds 171067274c08SMasahiro Yamada# Misc 171167274c08SMasahiro Yamada# --------------------------------------------------------------------------- 171267274c08SMasahiro Yamada 171367274c08SMasahiro YamadaPHONY += scripts_gdb 17147a739ce5SMasahiro Yamadascripts_gdb: prepare0 17151e5ff84fSMasahiro Yamada $(Q)$(MAKE) $(build)=scripts/gdb 17168d2e5200SMasahiro Yamada $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) 171767274c08SMasahiro Yamada 171867274c08SMasahiro Yamadaifdef CONFIG_GDB_SCRIPTS 171967274c08SMasahiro Yamadaall: scripts_gdb 172067274c08SMasahiro Yamadaendif 172167274c08SMasahiro Yamada 17221da177e4SLinus Torvaldselse # KBUILD_EXTMOD 17231da177e4SLinus Torvalds 17241da177e4SLinus Torvalds### 17251da177e4SLinus Torvalds# External module support. 17261da177e4SLinus Torvalds# When building external modules the kernel used as basis is considered 17271da177e4SLinus Torvalds# read-only, and no consistency checks are made and the make 17281da177e4SLinus Torvalds# system is not used on the basis kernel. If updates are required 17291da177e4SLinus Torvalds# in the basis kernel ordinary make commands (without M=...) must 17301da177e4SLinus Torvalds# be used. 17311da177e4SLinus Torvalds# 17321da177e4SLinus Torvalds# The following are the only valid targets when building external 17331da177e4SLinus Torvalds# modules. 17341da177e4SLinus Torvalds# make M=dir clean Delete all automatically generated files 17351da177e4SLinus Torvalds# make M=dir modules Make all modules in specified dir 17361da177e4SLinus Torvalds# make M=dir Same as 'make M=dir modules' 17371da177e4SLinus Torvalds# make M=dir modules_install 1738070b98bfSSam Ravnborg# Install the modules built in the module directory 17391da177e4SLinus Torvalds# Assumes install directory is already created 17401da177e4SLinus Torvalds 17416212804fSMasahiro Yamada# We are always building only modules. 17426212804fSMasahiro YamadaKBUILD_BUILTIN := 17431da177e4SLinus TorvaldsKBUILD_MODULES := 1 17441da177e4SLinus Torvalds 1745c99f3918SMasahiro Yamadabuild-dirs := $(KBUILD_EXTMOD) 17463d32285fSMasahiro Yamada$(MODORDER): descend 17473d32285fSMasahiro Yamada @: 17483d32285fSMasahiro Yamada 17493d32285fSMasahiro Yamadacompile_commands.json: $(extmod-prefix)compile_commands.json 17503d32285fSMasahiro YamadaPHONY += compile_commands.json 17513d32285fSMasahiro Yamada 175276cd306dSMasahiro Yamadaclean-dirs := $(KBUILD_EXTMOD) 17533d32285fSMasahiro Yamadaclean: rm-files := $(KBUILD_EXTMOD)/Module.symvers $(KBUILD_EXTMOD)/modules.nsdeps \ 1754dc5723b0SSami Tolvanen $(KBUILD_EXTMOD)/compile_commands.json $(KBUILD_EXTMOD)/.thinlto-cache 17551da177e4SLinus Torvalds 1756fe69b420SMasahiro YamadaPHONY += help 17571da177e4SLinus Torvaldshelp: 17581da177e4SLinus Torvalds @echo ' Building external modules.' 17591da177e4SLinus Torvalds @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 17601da177e4SLinus Torvalds @echo '' 17611da177e4SLinus Torvalds @echo ' modules - default target, build the module(s)' 17621da177e4SLinus Torvalds @echo ' modules_install - install the module' 17631da177e4SLinus Torvalds @echo ' clean - remove generated files in module directory only' 17641da177e4SLinus Torvalds @echo '' 176506300b21SSam Ravnborg 1766596b0474SMasahiro Yamada# no-op for external module builds 1767596b0474SMasahiro YamadaPHONY += prepare modules_prepare 1768596b0474SMasahiro Yamada 17691da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 17701da177e4SLinus Torvalds 1771*3e3005dfSMasahiro Yamada# --------------------------------------------------------------------------- 1772*3e3005dfSMasahiro Yamada# Modules 1773*3e3005dfSMasahiro Yamada 1774*3e3005dfSMasahiro YamadaPHONY += modules modules_install 1775*3e3005dfSMasahiro Yamada 1776*3e3005dfSMasahiro Yamadaifdef CONFIG_MODULES 1777*3e3005dfSMasahiro Yamada 1778*3e3005dfSMasahiro Yamadamodules: $(MODORDER) 1779*3e3005dfSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1780*3e3005dfSMasahiro Yamada 1781*3e3005dfSMasahiro Yamadaquiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1782*3e3005dfSMasahiro Yamada cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 1783*3e3005dfSMasahiro Yamada $(KERNELRELEASE) 1784*3e3005dfSMasahiro Yamada 1785*3e3005dfSMasahiro Yamadamodules_install: 1786*3e3005dfSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1787*3e3005dfSMasahiro Yamada $(call cmd,depmod) 1788*3e3005dfSMasahiro Yamada 1789*3e3005dfSMasahiro Yamadaelse # CONFIG_MODULES 1790*3e3005dfSMasahiro Yamada 1791*3e3005dfSMasahiro Yamada# Modules not configured 1792*3e3005dfSMasahiro Yamada# --------------------------------------------------------------------------- 1793*3e3005dfSMasahiro Yamada 1794*3e3005dfSMasahiro Yamadamodules modules_install: 1795*3e3005dfSMasahiro Yamada @echo >&2 '***' 1796*3e3005dfSMasahiro Yamada @echo >&2 '*** The present kernel configuration has modules disabled.' 1797*3e3005dfSMasahiro Yamada @echo >&2 '*** To use the module feature, please run "make menuconfig" etc.' 1798*3e3005dfSMasahiro Yamada @echo >&2 '*** to enable CONFIG_MODULES.' 1799*3e3005dfSMasahiro Yamada @echo >&2 '***' 1800*3e3005dfSMasahiro Yamada @exit 1 1801*3e3005dfSMasahiro Yamada 1802*3e3005dfSMasahiro Yamadaendif # CONFIG_MODULES 1803*3e3005dfSMasahiro Yamada 1804b1fbfcb4SMasahiro Yamada# Single targets 1805b1fbfcb4SMasahiro Yamada# --------------------------------------------------------------------------- 1806b1fbfcb4SMasahiro Yamada# To build individual files in subdirectories, you can do like this: 1807b1fbfcb4SMasahiro Yamada# 1808b1fbfcb4SMasahiro Yamada# make foo/bar/baz.s 1809b1fbfcb4SMasahiro Yamada# 1810b1fbfcb4SMasahiro Yamada# The supported suffixes for single-target are listed in 'single-targets' 1811b1fbfcb4SMasahiro Yamada# 1812b1fbfcb4SMasahiro Yamada# To build only under specific subdirectories, you can do like this: 1813b1fbfcb4SMasahiro Yamada# 1814b1fbfcb4SMasahiro Yamada# make foo/bar/baz/ 1815b1fbfcb4SMasahiro Yamada 1816b1fbfcb4SMasahiro Yamadaifdef single-build 1817b1fbfcb4SMasahiro Yamada 1818b1fbfcb4SMasahiro Yamada# .ko is special because modpost is needed 1819b1fbfcb4SMasahiro Yamadasingle-ko := $(sort $(filter %.ko, $(MAKECMDGOALS))) 1820b1fbfcb4SMasahiro Yamadasingle-no-ko := $(sort $(patsubst %.ko,%.mod, $(MAKECMDGOALS))) 1821b1fbfcb4SMasahiro Yamada 1822b1fbfcb4SMasahiro Yamada$(single-ko): single_modpost 1823b1fbfcb4SMasahiro Yamada @: 1824b1fbfcb4SMasahiro Yamada$(single-no-ko): descend 1825b1fbfcb4SMasahiro Yamada @: 1826b1fbfcb4SMasahiro Yamada 1827b1fbfcb4SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 1828b1fbfcb4SMasahiro Yamada# For the single build of in-tree modules, use a temporary file to avoid 1829b1fbfcb4SMasahiro Yamada# the situation of modules_install installing an invalid modules.order. 1830b1fbfcb4SMasahiro YamadaMODORDER := .modules.tmp 1831b1fbfcb4SMasahiro Yamadaendif 1832b1fbfcb4SMasahiro Yamada 1833b1fbfcb4SMasahiro YamadaPHONY += single_modpost 1834596b0474SMasahiro Yamadasingle_modpost: $(single-no-ko) modules_prepare 1835b1fbfcb4SMasahiro Yamada $(Q){ $(foreach m, $(single-ko), echo $(extmod-prefix)$m;) } > $(MODORDER) 1836b1fbfcb4SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1837b1fbfcb4SMasahiro Yamada 1838b1fbfcb4SMasahiro YamadaKBUILD_MODULES := 1 1839b1fbfcb4SMasahiro Yamada 1840b1fbfcb4SMasahiro Yamadaexport KBUILD_SINGLE_TARGETS := $(addprefix $(extmod-prefix), $(single-no-ko)) 1841b1fbfcb4SMasahiro Yamada 1842b1fbfcb4SMasahiro Yamada# trim unrelated directories 1843b1fbfcb4SMasahiro Yamadabuild-dirs := $(foreach d, $(build-dirs), \ 1844b1fbfcb4SMasahiro Yamada $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d))) 1845b1fbfcb4SMasahiro Yamada 1846b1fbfcb4SMasahiro Yamadaendif 1847b1fbfcb4SMasahiro Yamada 1848b480fec9SMasahiro Yamadaifndef CONFIG_MODULES 1849b480fec9SMasahiro YamadaKBUILD_MODULES := 1850b480fec9SMasahiro Yamadaendif 1851b480fec9SMasahiro Yamada 1852c99f3918SMasahiro Yamada# Handle descending into subdirectories listed in $(build-dirs) 1853c99f3918SMasahiro Yamada# Preset locale variables to speed up the build process. Limit locale 1854c99f3918SMasahiro Yamada# tweaks to this spot to avoid wrong language settings when running 1855c99f3918SMasahiro Yamada# make menuconfig etc. 1856c99f3918SMasahiro Yamada# Error messages still appears in the original language 1857c99f3918SMasahiro YamadaPHONY += descend $(build-dirs) 1858c99f3918SMasahiro Yamadadescend: $(build-dirs) 1859c99f3918SMasahiro Yamada$(build-dirs): prepare 1860b1fbfcb4SMasahiro Yamada $(Q)$(MAKE) $(build)=$@ \ 186120b1be59SMasahiro Yamada single-build=$(if $(filter-out $@/, $(filter $@/%, $(KBUILD_SINGLE_TARGETS))),1) \ 1862b1fbfcb4SMasahiro Yamada need-builtin=1 need-modorder=1 1863c99f3918SMasahiro Yamada 186476cd306dSMasahiro Yamadaclean-dirs := $(addprefix _clean_, $(clean-dirs)) 186576cd306dSMasahiro YamadaPHONY += $(clean-dirs) clean 186676cd306dSMasahiro Yamada$(clean-dirs): 186776cd306dSMasahiro Yamada $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 186876cd306dSMasahiro Yamada 186988d7be03SMichal Marekclean: $(clean-dirs) 187088d7be03SMichal Marek $(call cmd,rmfiles) 187143f67c98SKevin Cernekee @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1872ef46d9b3SMasahiro Yamada \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ 18734f0e3a57SRob Herring -o -name '*.ko.*' \ 1874ce88c9c7SViresh Kumar -o -name '*.dtb' -o -name '*.dtbo' -o -name '*.dtb.S' -o -name '*.dt.yaml' \ 1875ef46d9b3SMasahiro Yamada -o -name '*.dwo' -o -name '*.lst' \ 1876bbc55bdeSMasahiro Yamada -o -name '*.su' -o -name '*.mod' \ 187788d7be03SMichal Marek -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 18789a8dfb39SMasahiro Yamada -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 18794fa8bc94SMasahiro Yamada -o -name '*.asn1.[ch]' \ 188088d7be03SMichal Marek -o -name '*.symtypes' -o -name 'modules.order' \ 18818b41fc44SMasahiro Yamada -o -name '.tmp_*.o.*' \ 18826b90bd4bSEmese Revfy -o -name '*.c.[012]*.*' \ 1883433db3e2SVinÃcius Tinti -o -name '*.ll' \ 188438e89184SSami Tolvanen -o -name '*.gcno' \ 188538e89184SSami Tolvanen -o -name '*.*.symversions' \) -type f -print | xargs rm -f 188688d7be03SMichal Marek 18871da177e4SLinus Torvalds# Generate tags for editors 18881da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1889a680eedcSSam Ravnborgquiet_cmd_tags = GEN $@ 1890858805b3SMasahiro Yamada cmd_tags = $(BASH) $(srctree)/scripts/tags.sh $@ 18911da177e4SLinus Torvalds 1892f4ed1009SJianbin Kangtags TAGS cscope gtags: FORCE 18931da177e4SLinus Torvalds $(call cmd,tags) 18941da177e4SLinus Torvalds 1895eb8305aeSMatthias Maennich# Script to generate missing namespace dependencies 1896eb8305aeSMatthias Maennich# --------------------------------------------------------------------------- 1897eb8305aeSMatthias Maennich 1898eb8305aeSMatthias MaennichPHONY += nsdeps 1899bff9c62bSMasahiro Yamadansdeps: export KBUILD_NSDEPS=1 1900eb8305aeSMatthias Maennichnsdeps: modules 1901bff9c62bSMasahiro Yamada $(Q)$(CONFIG_SHELL) $(srctree)/scripts/nsdeps 1902eb8305aeSMatthias Maennich 19033d32285fSMasahiro Yamada# Clang Tooling 19043d32285fSMasahiro Yamada# --------------------------------------------------------------------------- 19053d32285fSMasahiro Yamada 19063d32285fSMasahiro Yamadaquiet_cmd_gen_compile_commands = GEN $@ 19073d32285fSMasahiro Yamada cmd_gen_compile_commands = $(PYTHON3) $< -a $(AR) -o $@ $(filter-out $<, $(real-prereqs)) 19083d32285fSMasahiro Yamada 19096ad7cbc0SNathan Huckleberry$(extmod-prefix)compile_commands.json: scripts/clang-tools/gen_compile_commands.py \ 19103d32285fSMasahiro Yamada $(if $(KBUILD_EXTMOD),,$(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)) \ 19113d32285fSMasahiro Yamada $(if $(CONFIG_MODULES), $(MODORDER)) FORCE 19123d32285fSMasahiro Yamada $(call if_changed,gen_compile_commands) 19133d32285fSMasahiro Yamada 19143d32285fSMasahiro Yamadatargets += $(extmod-prefix)compile_commands.json 19153d32285fSMasahiro Yamada 19166ad7cbc0SNathan HuckleberryPHONY += clang-tidy clang-analyzer 19176ad7cbc0SNathan Huckleberry 19186ad7cbc0SNathan Huckleberryifdef CONFIG_CC_IS_CLANG 19196ad7cbc0SNathan Huckleberryquiet_cmd_clang_tools = CHECK $< 19206ad7cbc0SNathan Huckleberry cmd_clang_tools = $(PYTHON3) $(srctree)/scripts/clang-tools/run-clang-tools.py $@ $< 19216ad7cbc0SNathan Huckleberry 19226ad7cbc0SNathan Huckleberryclang-tidy clang-analyzer: $(extmod-prefix)compile_commands.json 19236ad7cbc0SNathan Huckleberry $(call cmd,clang_tools) 19246ad7cbc0SNathan Huckleberryelse 19256ad7cbc0SNathan Huckleberryclang-tidy clang-analyzer: 19266ad7cbc0SNathan Huckleberry @echo "$@ requires CC=clang" >&2 19276ad7cbc0SNathan Huckleberry @false 19286ad7cbc0SNathan Huckleberryendif 19296ad7cbc0SNathan Huckleberry 19301da177e4SLinus Torvalds# Scripts to check various things for consistency 19311da177e4SLinus Torvalds# --------------------------------------------------------------------------- 19321da177e4SLinus Torvalds 19337dfbea4cSJacob KellerPHONY += includecheck versioncheck coccicheck export_report 1934279f3dd3SPeter Foley 19351da177e4SLinus Torvaldsincludecheck: 1936436f876cSPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 19371da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 193880007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 19391da177e4SLinus Torvalds 19401da177e4SLinus Torvaldsversioncheck: 19412ee2d292SPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 19421da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 194380007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 19441da177e4SLinus Torvalds 194574425eeeSNicolas Palixcoccicheck: 1946858805b3SMasahiro Yamada $(Q)$(BASH) $(srctree)/scripts/$@ 194774425eeeSNicolas Palix 1948295ac051SAdrian Bunkexport_report: 1949295ac051SAdrian Bunk $(PERL) $(srctree)/scripts/export_report.pl 1950295ac051SAdrian Bunk 1951c398ff00SMike MarciniszynPHONY += checkstack kernelrelease kernelversion image_name 1952e3ccf6e3SJeff Dike 1953011e3a9aSJeff Dike# UML needs a little special treatment here. It wants to use the host 1954011e3a9aSJeff Dike# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1955011e3a9aSJeff Dike# else wants $(ARCH), including people doing cross-builds, which means 1956011e3a9aSJeff Dike# that $(SUBARCH) doesn't work here. 1957011e3a9aSJeff Dikeifeq ($(ARCH), um) 1958011e3a9aSJeff DikeCHECKSTACK_ARCH := $(SUBARCH) 1959011e3a9aSJeff Dikeelse 1960011e3a9aSJeff DikeCHECKSTACK_ARCH := $(ARCH) 1961011e3a9aSJeff Dikeendif 19621da177e4SLinus Torvaldscheckstack: 19631da177e4SLinus Torvalds $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 196475dd4747SMasahiro Yamada $(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 19651da177e4SLinus Torvalds 19667b8ea53dSAmerigo Wangkernelrelease: 19677b8ea53dSAmerigo Wang @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 196801ab1788SAmerigo Wang 1969cb58455cSSam Ravnborgkernelversion: 19702244cbd8SSam Ravnborg @echo $(KERNELVERSION) 19711da177e4SLinus Torvalds 1972c398ff00SMike Marciniszynimage_name: 1973c398ff00SMike Marciniszyn @echo $(KBUILD_IMAGE) 1974c398ff00SMike Marciniszyn 1975ea01fa9fSBorislav Petkov# Clear a bunch of variables before executing the submake 1976f47a23ceSMasahiro Yamada 1977f47a23ceSMasahiro Yamadaifeq ($(quiet),silent_) 1978f47a23ceSMasahiro Yamadatools_silent=s 1979f47a23ceSMasahiro Yamadaendif 1980f47a23ceSMasahiro Yamada 1981ea01fa9fSBorislav Petkovtools/: FORCE 1982bf35182fSDavid Howells $(Q)mkdir -p $(objtree)/tools 198375dd4747SMasahiro Yamada $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ 1984ea01fa9fSBorislav Petkov 1985ea01fa9fSBorislav Petkovtools/%: FORCE 1986bf35182fSDavid Howells $(Q)mkdir -p $(objtree)/tools 198775dd4747SMasahiro Yamada $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(srctree)/tools/ $* 1988ea01fa9fSBorislav Petkov 19891da177e4SLinus Torvaldsquiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 19900663c68cSMasahiro Yamada cmd_rmfiles = rm -rf $(rm-files) 19911da177e4SLinus Torvalds 1992392885eeSMasahiro Yamada# read saved command lines for existing targets 1993392885eeSMasahiro Yamadaexisting-targets := $(wildcard $(sort $(targets))) 19941da177e4SLinus Torvalds 1995b999923cSMasahiro Yamada-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 19961da177e4SLinus Torvalds 199746b7c492SSZ Lin (林上智)endif # config-build 19982042b548SMasahiro Yamadaendif # mixed-build 1999688931a5SMasahiro Yamadaendif # need-sub-make 20001da177e4SLinus Torvalds 20014f193362SPaul SmithPHONY += FORCE 20021da177e4SLinus TorvaldsFORCE: 20034f193362SPaul Smith 2004bd412d81SUlf Magnusson# Declare the contents of the PHONY variable as phony. We keep that 2005fe8d0a41SKirill Smelkov# information in a variable so we can use it in if_changed and friends. 20064f193362SPaul Smith.PHONY: $(PHONY) 2007