1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 2c517d838SLinus TorvaldsVERSION = 4 35b394b2dSLinus TorvaldsPATCHLEVEL = 19 455922c9dSLinus TorvaldsSUBLEVEL = 0 55b394b2dSLinus TorvaldsEXTRAVERSION = -rc1 675bc37feSLinus TorvaldsNAME = Merciless Moray 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 14ba634eceSMasahiro Yamada# That's our default target when none is given on the command line 15ba634eceSMasahiro YamadaPHONY := _all 16ba634eceSMasahiro Yamada_all: 17ba634eceSMasahiro Yamada 18a436bb7bSMasahiro Yamada# o Do not use make's built-in rules and variables 19d384e35aSLinus Nilsson# (this increases performance and avoids hard-to-debug behaviour); 20a436bb7bSMasahiro Yamada# o Look for make include files relative to root of kernel src 21a436bb7bSMasahiro YamadaMAKEFLAGS += -rR --include-dir=$(CURDIR) 221da177e4SLinus Torvalds 23c051346bSH. Peter Anvin# Avoid funny character set dependencies 2406b5dc64SH. Peter Anvinunexport LC_ALL 25c051346bSH. Peter AnvinLC_COLLATE=C 26c051346bSH. Peter AnvinLC_NUMERIC=C 2707105202SMichal Marekexport LC_COLLATE LC_NUMERIC 28c051346bSH. Peter Anvin 29ab7474eaSBorislav Petkov# Avoid interference with shell env settings 30ab7474eaSBorislav Petkovunexport GREP_OPTIONS 31ab7474eaSBorislav Petkov 321da177e4SLinus Torvalds# We are using a recursive build, so we need to do a little thinking 331da177e4SLinus Torvalds# to get the ordering right. 341da177e4SLinus Torvalds# 351da177e4SLinus Torvalds# Most importantly: sub-Makefiles should only ever modify files in 361da177e4SLinus Torvalds# their own directory. If in some directory we have a dependency on 371da177e4SLinus Torvalds# a file in another dir (which doesn't happen often, but it's often 38f49821eeSNicholas Piggin# unavoidable when linking the built-in.a targets which finally 391da177e4SLinus Torvalds# turn into vmlinux), we will call a sub make in that other dir, and 401da177e4SLinus Torvalds# after that we are sure that everything which is in that other dir 411da177e4SLinus Torvalds# is now up to date. 421da177e4SLinus Torvalds# 431da177e4SLinus Torvalds# The only cases where we need to modify files which have global 441da177e4SLinus Torvalds# effects are thus separated out and done before the recursive 451da177e4SLinus Torvalds# descending is started. They are now explicitly listed as the 461da177e4SLinus Torvalds# prepare rule. 471da177e4SLinus Torvalds 48066b7ed9SMichal Marek# Beautify output 49066b7ed9SMichal Marek# --------------------------------------------------------------------------- 50066b7ed9SMichal Marek# 51066b7ed9SMichal Marek# Normally, we echo the whole command before executing it. By making 52066b7ed9SMichal Marek# that echo $($(quiet)$(cmd)), we now have the possibility to set 53066b7ed9SMichal Marek# $(quiet) to choose other forms of output instead, e.g. 54066b7ed9SMichal Marek# 55066b7ed9SMichal Marek# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 56066b7ed9SMichal Marek# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 57066b7ed9SMichal Marek# 58066b7ed9SMichal Marek# If $(quiet) is empty, the whole command will be printed. 59066b7ed9SMichal Marek# If it is set to "quiet_", only the short version will be printed. 60066b7ed9SMichal Marek# If it is set to "silent_", nothing will be printed at all, since 61066b7ed9SMichal Marek# the variable $(silent_cmd_cc_o_c) doesn't exist. 62066b7ed9SMichal Marek# 63066b7ed9SMichal Marek# A simple variant is to prefix commands with $(Q) - that's useful 64066b7ed9SMichal Marek# for commands that shall be hidden in non-verbose mode. 65066b7ed9SMichal Marek# 66066b7ed9SMichal Marek# $(Q)ln $@ :< 67066b7ed9SMichal Marek# 68066b7ed9SMichal Marek# If KBUILD_VERBOSE equals 0 then the above command will be hidden. 69066b7ed9SMichal Marek# If KBUILD_VERBOSE equals 1 then the above command is displayed. 70066b7ed9SMichal Marek# 711da177e4SLinus Torvalds# To put more focus on warnings, be less verbose as default 721da177e4SLinus Torvalds# Use 'make V=1' to see the full commands 731da177e4SLinus Torvalds 741da177e4SLinus Torvaldsifeq ("$(origin V)", "command line") 751da177e4SLinus Torvalds KBUILD_VERBOSE = $(V) 761da177e4SLinus Torvaldsendif 771da177e4SLinus Torvaldsifndef KBUILD_VERBOSE 781da177e4SLinus Torvalds KBUILD_VERBOSE = 0 791da177e4SLinus Torvaldsendif 801da177e4SLinus Torvalds 81066b7ed9SMichal Marekifeq ($(KBUILD_VERBOSE),1) 82066b7ed9SMichal Marek quiet = 83066b7ed9SMichal Marek Q = 84066b7ed9SMichal Marekelse 85066b7ed9SMichal Marek quiet=quiet_ 86066b7ed9SMichal Marek Q = @ 87066b7ed9SMichal Marekendif 88066b7ed9SMichal Marek 89066b7ed9SMichal Marek# If the user is running make -s (silent mode), suppress echoing of 90066b7ed9SMichal Marek# commands 91066b7ed9SMichal Marek 926f0fa58eSMasahiro Yamadaifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) 93066b7ed9SMichal Marek quiet=silent_ 94e572d088SJosh Poimboeuf tools_silent=s 95066b7ed9SMichal Marekendif 96066b7ed9SMichal Marek 97066b7ed9SMichal Marekexport quiet Q KBUILD_VERBOSE 98066b7ed9SMichal Marek 991da177e4SLinus Torvalds# kbuild supports saving output files in a separate directory. 1001da177e4SLinus Torvalds# To locate output files in a separate directory two syntaxes are supported. 1011da177e4SLinus Torvalds# In both cases the working directory must be the root of the kernel src. 1021da177e4SLinus Torvalds# 1) O= 1031da177e4SLinus Torvalds# Use "make O=dir/to/store/output/files/" 1041da177e4SLinus Torvalds# 1051da177e4SLinus Torvalds# 2) Set KBUILD_OUTPUT 1061da177e4SLinus Torvalds# Set the environment variable KBUILD_OUTPUT to point to the directory 1071da177e4SLinus Torvalds# where the output files shall be placed. 1081da177e4SLinus Torvalds# export KBUILD_OUTPUT=dir/to/store/output/files/ 1091da177e4SLinus Torvalds# make 1101da177e4SLinus Torvalds# 1111da177e4SLinus Torvalds# The O= assignment takes precedence over the KBUILD_OUTPUT environment 1121da177e4SLinus Torvalds# variable. 1131da177e4SLinus Torvalds 114c4e6fff1SCao jin# KBUILD_SRC is not intended to be used by the regular user (for now), 115c4e6fff1SCao jin# it is set on invocation of make with KBUILD_OUTPUT or O= specified. 1161da177e4SLinus Torvaldsifeq ($(KBUILD_SRC),) 1171da177e4SLinus Torvalds 1181da177e4SLinus Torvalds# OK, Make called in directory where kernel src resides 1191da177e4SLinus Torvalds# Do we want to locate output files in a separate directory? 1201da177e4SLinus Torvaldsifeq ("$(origin O)", "command line") 1211da177e4SLinus Torvalds KBUILD_OUTPUT := $(O) 1221da177e4SLinus Torvaldsendif 1231da177e4SLinus Torvalds 1241cacc9abSSam Ravnborg# Cancel implicit rules on top Makefile 1251cacc9abSSam Ravnborg$(CURDIR)/Makefile Makefile: ; 1261cacc9abSSam Ravnborg 12751193b76SRobert Jarzmikifneq ($(words $(subst :, ,$(CURDIR))), 1) 12851193b76SRobert Jarzmik $(error main directory cannot contain spaces nor colons) 12951193b76SRobert Jarzmikendif 13051193b76SRobert Jarzmik 1311da177e4SLinus Torvaldsifneq ($(KBUILD_OUTPUT),) 1321da177e4SLinus Torvalds# check that the output directory actually exists 1331da177e4SLinus Torvaldssaved-output := $(KBUILD_OUTPUT) 134028568d8SMasahiro YamadaKBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \ 13516f8259cSBjørn Forsman && pwd) 1361da177e4SLinus Torvalds$(if $(KBUILD_OUTPUT),, \ 1371c9e70a5SMasahiro Yamada $(error failed to create output directory "$(saved-output)")) 1381da177e4SLinus Torvalds 1390b35786dSMilton MillerPHONY += $(MAKECMDGOALS) sub-make 1400b35786dSMilton Miller 1411cacc9abSSam Ravnborg$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 14216f89098SCharles Keepax @: 1430b35786dSMilton Miller 144c4e6fff1SCao jin# Invoke a second make in the output directory, passing relevant variables 1452e8d696bSMasahiro Yamadasub-make: 146745a2543SMasahiro Yamada $(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \ 147aa55c8e2SMasahiro Yamada -f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS)) 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds# Leave processing to above invocation of make 1501da177e4SLinus Torvaldsskip-makefile := 1 1511da177e4SLinus Torvaldsendif # ifneq ($(KBUILD_OUTPUT),) 1521da177e4SLinus Torvaldsendif # ifeq ($(KBUILD_SRC),) 1531da177e4SLinus Torvalds 1541da177e4SLinus Torvalds# We process the rest of the Makefile if this is the final invocation of make 1551da177e4SLinus Torvaldsifeq ($(skip-makefile),) 1561da177e4SLinus Torvalds 1577ff52571SMasahiro Yamada# Do not print "Entering directory ...", 1587ff52571SMasahiro Yamada# but we want to display it when entering to the output directory 1597ff52571SMasahiro Yamada# so that IDEs/editors are able to understand relative filenames. 1607ff52571SMasahiro YamadaMAKEFLAGS += --no-print-directory 1617ff52571SMasahiro Yamada 162aa55c8e2SMasahiro Yamada# Call a source code checker (by default, "sparse") as part of the 163aa55c8e2SMasahiro Yamada# C compilation. 164aa55c8e2SMasahiro Yamada# 165aa55c8e2SMasahiro Yamada# Use 'make C=1' to enable checking of only re-compiled files. 166aa55c8e2SMasahiro Yamada# Use 'make C=2' to enable checking of *all* source files, regardless 167aa55c8e2SMasahiro Yamada# of whether they are re-compiled or not. 168aa55c8e2SMasahiro Yamada# 169036db11cSCao jin# See the file "Documentation/dev-tools/sparse.rst" for more details, 170036db11cSCao jin# including where to get the "sparse" utility. 171aa55c8e2SMasahiro Yamada 172aa55c8e2SMasahiro Yamadaifeq ("$(origin C)", "command line") 173aa55c8e2SMasahiro Yamada KBUILD_CHECKSRC = $(C) 174aa55c8e2SMasahiro Yamadaendif 175aa55c8e2SMasahiro Yamadaifndef KBUILD_CHECKSRC 176aa55c8e2SMasahiro Yamada KBUILD_CHECKSRC = 0 177aa55c8e2SMasahiro Yamadaendif 178aa55c8e2SMasahiro Yamada 179aa55c8e2SMasahiro Yamada# Use make M=dir to specify directory of external module to build 180aa55c8e2SMasahiro Yamada# Old syntax make ... SUBDIRS=$PWD is still supported 181aa55c8e2SMasahiro Yamada# Setting the environment variable KBUILD_EXTMOD take precedence 182aa55c8e2SMasahiro Yamadaifdef SUBDIRS 183aa55c8e2SMasahiro Yamada KBUILD_EXTMOD ?= $(SUBDIRS) 184aa55c8e2SMasahiro Yamadaendif 185aa55c8e2SMasahiro Yamada 186aa55c8e2SMasahiro Yamadaifeq ("$(origin M)", "command line") 187aa55c8e2SMasahiro Yamada KBUILD_EXTMOD := $(M) 188aa55c8e2SMasahiro Yamadaendif 189aa55c8e2SMasahiro Yamada 1909da0763bSMichal Marekifeq ($(KBUILD_SRC),) 1919da0763bSMichal Marek # building in the source tree 1929da0763bSMichal Marek srctree := . 1939da0763bSMichal Marekelse 1949da0763bSMichal Marek ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR))) 1959da0763bSMichal Marek # building in a subdirectory of the source tree 1969da0763bSMichal Marek srctree := .. 1979da0763bSMichal Marek else 1989da0763bSMichal Marek srctree := $(KBUILD_SRC) 1999da0763bSMichal Marek endif 2009da0763bSMichal Marekendif 2012c1f4f12SMasahiro Yamada 2022c1f4f12SMasahiro Yamadaexport KBUILD_CHECKSRC KBUILD_EXTMOD KBUILD_SRC 2032c1f4f12SMasahiro Yamada 2047e1c0477SMichal Marekobjtree := . 2051da177e4SLinus Torvaldssrc := $(srctree) 2061da177e4SLinus Torvaldsobj := $(objtree) 2071da177e4SLinus Torvalds 2080f558c33SMattia DongiliVPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 2091da177e4SLinus Torvalds 21011294235SAmerigo Wangexport srctree objtree VPATH 2111da177e4SLinus Torvalds 2122c1f4f12SMasahiro Yamada# To make sure we do not include .config for any of the *config targets 2132c1f4f12SMasahiro Yamada# catch them early, and hand them over to scripts/kconfig/Makefile 2142c1f4f12SMasahiro Yamada# It is allowed to specify more targets when calling make, including 2152c1f4f12SMasahiro Yamada# mixing *config targets and build targets. 2162c1f4f12SMasahiro Yamada# For example 'make oldconfig all'. 2172c1f4f12SMasahiro Yamada# Detect when mixed targets is specified, and make a second invocation 2182c1f4f12SMasahiro Yamada# of make so .config is not included in this case either (for *config). 2192c1f4f12SMasahiro Yamada 2202c1f4f12SMasahiro Yamadaversion_h := include/generated/uapi/linux/version.h 2212c1f4f12SMasahiro Yamadaold_version_h := include/linux/version.h 2222c1f4f12SMasahiro Yamada 22322340a06SMasahiro Yamadaclean-targets := %clean mrproper cleandocs 22422340a06SMasahiro Yamadano-dot-config-targets := $(clean-targets) \ 2252c1f4f12SMasahiro Yamada cscope gtags TAGS tags help% %docs check% coccicheck \ 2262c1f4f12SMasahiro Yamada $(version_h) headers_% archheaders archscripts \ 22763e31a67SMasahiro Yamada %asm-generic kernelversion %src-pkg 228a29d4d8cSMasahiro Yamadano-sync-config-targets := $(no-dot-config-targets) install %install \ 229a29d4d8cSMasahiro Yamada kernelrelease 2302c1f4f12SMasahiro Yamada 2312c1f4f12SMasahiro Yamadaconfig-targets := 0 2322c1f4f12SMasahiro Yamadamixed-targets := 0 2332c1f4f12SMasahiro Yamadadot-config := 1 234d7942413SMasahiro Yamadamay-sync-config := 1 2352c1f4f12SMasahiro Yamada 2362c1f4f12SMasahiro Yamadaifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 2372c1f4f12SMasahiro Yamada ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 2382c1f4f12SMasahiro Yamada dot-config := 0 2392c1f4f12SMasahiro Yamada endif 2402c1f4f12SMasahiro Yamadaendif 2412c1f4f12SMasahiro Yamada 242d7942413SMasahiro Yamadaifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),) 243d7942413SMasahiro Yamada ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),) 244d7942413SMasahiro Yamada may-sync-config := 0 245d7942413SMasahiro Yamada endif 246d7942413SMasahiro Yamadaendif 247d7942413SMasahiro Yamada 248d7942413SMasahiro Yamadaifneq ($(KBUILD_EXTMOD),) 249d7942413SMasahiro Yamada may-sync-config := 0 250d7942413SMasahiro Yamadaendif 251d7942413SMasahiro Yamada 2522c1f4f12SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 2532c1f4f12SMasahiro Yamada ifneq ($(filter config %config,$(MAKECMDGOALS)),) 2542c1f4f12SMasahiro Yamada config-targets := 1 2552c1f4f12SMasahiro Yamada ifneq ($(words $(MAKECMDGOALS)),1) 2562c1f4f12SMasahiro Yamada mixed-targets := 1 2572c1f4f12SMasahiro Yamada endif 2582c1f4f12SMasahiro Yamada endif 2592c1f4f12SMasahiro Yamadaendif 26022340a06SMasahiro Yamada 26122340a06SMasahiro Yamada# For "make -j clean all", "make -j mrproper defconfig all", etc. 26222340a06SMasahiro Yamadaifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),) 26322340a06SMasahiro Yamada ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),) 26422340a06SMasahiro Yamada mixed-targets := 1 26522340a06SMasahiro Yamada endif 26622340a06SMasahiro Yamadaendif 26722340a06SMasahiro Yamada 2682c1f4f12SMasahiro Yamada# install and modules_install need also be processed one by one 2692c1f4f12SMasahiro Yamadaifneq ($(filter install,$(MAKECMDGOALS)),) 2702c1f4f12SMasahiro Yamada ifneq ($(filter modules_install,$(MAKECMDGOALS)),) 2712c1f4f12SMasahiro Yamada mixed-targets := 1 2722c1f4f12SMasahiro Yamada endif 2732c1f4f12SMasahiro Yamadaendif 2742c1f4f12SMasahiro Yamada 2752c1f4f12SMasahiro Yamadaifeq ($(mixed-targets),1) 2762c1f4f12SMasahiro Yamada# =========================================================================== 2772c1f4f12SMasahiro Yamada# We're called with mixed targets (*config and build targets). 2782c1f4f12SMasahiro Yamada# Handle them one by one. 2792c1f4f12SMasahiro Yamada 2802c1f4f12SMasahiro YamadaPHONY += $(MAKECMDGOALS) __build_one_by_one 2812c1f4f12SMasahiro Yamada 2822c1f4f12SMasahiro Yamada$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one 2832c1f4f12SMasahiro Yamada @: 2842c1f4f12SMasahiro Yamada 2852c1f4f12SMasahiro Yamada__build_one_by_one: 2862c1f4f12SMasahiro Yamada $(Q)set -e; \ 2872c1f4f12SMasahiro Yamada for i in $(MAKECMDGOALS); do \ 2882c1f4f12SMasahiro Yamada $(MAKE) -f $(srctree)/Makefile $$i; \ 2892c1f4f12SMasahiro Yamada done 2902c1f4f12SMasahiro Yamada 2912c1f4f12SMasahiro Yamadaelse 2922c1f4f12SMasahiro Yamada 2932c1f4f12SMasahiro Yamada# We need some generic definitions (do not try to remake the file). 2942c1f4f12SMasahiro Yamadascripts/Kbuild.include: ; 2952c1f4f12SMasahiro Yamadainclude scripts/Kbuild.include 2962c1f4f12SMasahiro Yamada 2972c1f4f12SMasahiro Yamada# Read KERNELRELEASE from include/config/kernel.release (if it exists) 2982c1f4f12SMasahiro YamadaKERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 2992c1f4f12SMasahiro YamadaKERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 3002c1f4f12SMasahiro Yamadaexport VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 3012c1f4f12SMasahiro Yamada 302*b2d35fa5SAnders Roxellinclude scripts/subarch.include 3031da177e4SLinus Torvalds 3041da177e4SLinus Torvalds# Cross compiling and selecting different set of gcc/bin-utils 3051da177e4SLinus Torvalds# --------------------------------------------------------------------------- 3061da177e4SLinus Torvalds# 3071da177e4SLinus Torvalds# When performing cross compilation for other architectures ARCH shall be set 3081da177e4SLinus Torvalds# to the target architecture. (See arch/* for the possibilities). 3091da177e4SLinus Torvalds# ARCH can be set during invocation of make: 3101da177e4SLinus Torvalds# make ARCH=ia64 3111da177e4SLinus Torvalds# Another way is to have ARCH set in the environment. 3121da177e4SLinus Torvalds# The default ARCH is the host where make is executed. 3131da177e4SLinus Torvalds 3141da177e4SLinus Torvalds# CROSS_COMPILE specify the prefix used for all executables used 3151da177e4SLinus Torvalds# during compilation. Only gcc and related bin-utils executables 3161da177e4SLinus Torvalds# are prefixed with $(CROSS_COMPILE). 3171da177e4SLinus Torvalds# CROSS_COMPILE can be set on the command line 3181da177e4SLinus Torvalds# make CROSS_COMPILE=ia64-linux- 3191da177e4SLinus Torvalds# Alternatively CROSS_COMPILE can be set in the environment. 3201da177e4SLinus Torvalds# Default value for CROSS_COMPILE is not to prefix executables 3211da177e4SLinus Torvalds# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 3222331d1a6SSam RavnborgARCH ?= $(SUBARCH) 3231da177e4SLinus Torvalds 3241da177e4SLinus Torvalds# Architecture as present in compile.h 3251da177e4SLinus TorvaldsUTS_MACHINE := $(ARCH) 3266752ed90SThomas GleixnerSRCARCH := $(ARCH) 3271da177e4SLinus Torvalds 328d746d647SSam Ravnborg# Additional ARCH settings for x86 329d746d647SSam Ravnborgifeq ($(ARCH),i386) 330d746d647SSam Ravnborg SRCARCH := x86 331d746d647SSam Ravnborgendif 332d746d647SSam Ravnborgifeq ($(ARCH),x86_64) 333d746d647SSam Ravnborg SRCARCH := x86 334d746d647SSam Ravnborgendif 33574b469f2SSam Ravnborg 3365e538790SSam Ravnborg# Additional ARCH settings for sparc 337e69f58c0SNamhyung Kimifeq ($(ARCH),sparc32) 338e69f58c0SNamhyung Kim SRCARCH := sparc 339e69f58c0SNamhyung Kimendif 340a439fe51SSam Ravnborgifeq ($(ARCH),sparc64) 3415e538790SSam Ravnborg SRCARCH := sparc 342a439fe51SSam Ravnborgendif 3432fb9b1bdSSam Ravnborg 3443cc000b5SPaul Mundt# Additional ARCH settings for sh 3453cc000b5SPaul Mundtifeq ($(ARCH),sh64) 3463cc000b5SPaul Mundt SRCARCH := sh 3473cc000b5SPaul Mundtendif 3483cc000b5SPaul Mundt 34914cdd3c4SRoman ZippelKCONFIG_CONFIG ?= .config 35041263fc6SBen Gardinerexport KCONFIG_CONFIG 35114cdd3c4SRoman Zippel 3521da177e4SLinus Torvalds# SHELL used by kbuild 3531da177e4SLinus TorvaldsCONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 3541da177e4SLinus Torvalds else if [ -x /bin/bash ]; then echo /bin/bash; \ 3551da177e4SLinus Torvalds else echo sh; fi ; fi) 3561da177e4SLinus Torvalds 3576d79a7b4SMasahiro YamadaHOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null) 3586d79a7b4SMasahiro YamadaHOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null) 3596d79a7b4SMasahiro YamadaHOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null) 360d7f14c66SUwe Kleine-König 3611da177e4SLinus TorvaldsHOSTCC = gcc 3621da177e4SLinus TorvaldsHOSTCXX = g++ 36396f14fe7SLaura AbbottKBUILD_HOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \ 364f92d19e0SLaura Abbott -fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS) \ 365f92d19e0SLaura Abbott $(HOSTCFLAGS) 366f92d19e0SLaura AbbottKBUILD_HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS) $(HOSTCXXFLAGS) 367f92d19e0SLaura AbbottKBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS) 368f92d19e0SLaura AbbottKBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) 3691da177e4SLinus Torvalds 3701da177e4SLinus Torvalds# Make variables (CC, etc...) 3711da177e4SLinus TorvaldsAS = $(CROSS_COMPILE)as 3721da177e4SLinus TorvaldsLD = $(CROSS_COMPILE)ld 3731da177e4SLinus TorvaldsCC = $(CROSS_COMPILE)gcc 3741da177e4SLinus TorvaldsCPP = $(CC) -E 3751da177e4SLinus TorvaldsAR = $(CROSS_COMPILE)ar 3761da177e4SLinus TorvaldsNM = $(CROSS_COMPILE)nm 3771da177e4SLinus TorvaldsSTRIP = $(CROSS_COMPILE)strip 3781da177e4SLinus TorvaldsOBJCOPY = $(CROSS_COMPILE)objcopy 3791da177e4SLinus TorvaldsOBJDUMP = $(CROSS_COMPILE)objdump 38073a4f6dbSMasahiro YamadaLEX = flex 38173a4f6dbSMasahiro YamadaYACC = bison 3821da177e4SLinus TorvaldsAWK = awk 3831da177e4SLinus TorvaldsGENKSYMS = scripts/genksyms/genksyms 384caa27b66SSam RavnborgINSTALLKERNEL := installkernel 3851da177e4SLinus TorvaldsDEPMOD = /sbin/depmod 3861da177e4SLinus TorvaldsPERL = perl 387011bf125SMasahiro YamadaPYTHON = python 388e9781b52SMasahiro YamadaPYTHON2 = python2 389e9781b52SMasahiro YamadaPYTHON3 = python3 3901da177e4SLinus TorvaldsCHECK = sparse 3911da177e4SLinus Torvalds 39280a7d1d9SHannes EderCHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 3936c49f359SLuc Van Oostenryck -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF) 394b36fad65SMichal MarekNOSTDINC_FLAGS = 3956588169dSSam RavnborgCFLAGS_MODULE = 3966588169dSSam RavnborgAFLAGS_MODULE = 3976588169dSSam RavnborgLDFLAGS_MODULE = 3981da177e4SLinus TorvaldsCFLAGS_KERNEL = 3991da177e4SLinus TorvaldsAFLAGS_KERNEL = 400b36fad65SMichal MarekLDFLAGS_vmlinux = 4011da177e4SLinus Torvalds 402abbf1590SDavid Howells# Use USERINCLUDE when you must reference the UAPI directories only. 403abbf1590SDavid HowellsUSERINCLUDE := \ 4049d022c54SMasahiro Yamada -I$(srctree)/arch/$(SRCARCH)/include/uapi \ 4059d022c54SMasahiro Yamada -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ 406abbf1590SDavid Howells -I$(srctree)/include/uapi \ 4073308b285SArnd Bergmann -I$(objtree)/include/generated/uapi \ 408abbf1590SDavid Howells -include $(srctree)/include/linux/kconfig.h 409abbf1590SDavid Howells 4101da177e4SLinus Torvalds# Use LINUXINCLUDE when you must reference the include/ directory. 4111da177e4SLinus Torvalds# Needed to be compatible with the O= option 412abbf1590SDavid HowellsLINUXINCLUDE := \ 4139d022c54SMasahiro Yamada -I$(srctree)/arch/$(SRCARCH)/include \ 4149d022c54SMasahiro Yamada -I$(objtree)/arch/$(SRCARCH)/include/generated \ 41596f13045SSam Ravnborg $(if $(KBUILD_SRC), -I$(srctree)/include) \ 416f8224f7fSMasahiro Yamada -I$(objtree)/include \ 417f8224f7fSMasahiro Yamada $(USERINCLUDE) 4181da177e4SLinus Torvalds 419433dc2ebSMasahiro YamadaKBUILD_AFLAGS := -D__ASSEMBLY__ 420a0f97e06SSam RavnborgKBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 4218c97023cSArnd Bergmann -fno-strict-aliasing -fno-common -fshort-wchar \ 422a8735821SFloris Kraak -Werror-implicit-function-declaration \ 42351b97e35SKirill A. Shutemov -Wno-format-security \ 424433dc2ebSMasahiro Yamada -std=gnu89 425433dc2ebSMasahiro YamadaKBUILD_CPPFLAGS := -D__KERNEL__ 42680c00ba9SSam RavnborgKBUILD_AFLAGS_KERNEL := 42780c00ba9SSam RavnborgKBUILD_CFLAGS_KERNEL := 4286588169dSSam RavnborgKBUILD_AFLAGS_MODULE := -DMODULE 4296588169dSSam RavnborgKBUILD_CFLAGS_MODULE := -DMODULE 4306588169dSSam RavnborgKBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 431d503ac53SMasahiro YamadaKBUILD_LDFLAGS := 432433dc2ebSMasahiro YamadaGCC_PLUGINS_CFLAGS := 4331da177e4SLinus Torvalds 43496f14fe7SLaura Abbottexport ARCH SRCARCH CONFIG_SHELL HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC 4358377bd2bSLaura Abbottexport CPP AR NM STRIP OBJCOPY OBJDUMP KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS 436e9781b52SMasahiro Yamadaexport MAKE LEX YACC AWK GENKSYMS INSTALLKERNEL PERL PYTHON PYTHON2 PYTHON3 UTS_MACHINE 43710844aebSLaura Abbottexport HOSTCXX KBUILD_HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 4381da177e4SLinus Torvalds 439d503ac53SMasahiro Yamadaexport KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS KBUILD_LDFLAGS 4400e410e15SAndrey Konovalovexport KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 4410e410e15SAndrey Konovalovexport CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN 442222d394dSSam Ravnborgexport KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 4436588169dSSam Ravnborgexport KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 44480c00ba9SSam Ravnborgexport KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 44540df759eSMichal Marekexport KBUILD_ARFLAGS 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvalds# When compiling out-of-tree modules, put MODVERDIR in the module 4481da177e4SLinus Torvalds# tree rather than in the kernel tree. The kernel tree might 4491da177e4SLinus Torvalds# even be read-only. 4501da177e4SLinus Torvaldsexport MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 4511da177e4SLinus Torvalds 4521da177e4SLinus Torvalds# Files to ignore in find ... statements 4531da177e4SLinus Torvalds 454ae63b2d7SPrarit Bhargavaexport RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \ 455ae63b2d7SPrarit Bhargava -name CVS -o -name .pc -o -name .hg -o -name .git \) \ 456ae63b2d7SPrarit Bhargava -prune -o 457450c6076SJesper Juhlexport RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ 458450c6076SJesper Juhl --exclude CVS --exclude .pc --exclude .hg --exclude .git 4591da177e4SLinus Torvalds 4601da177e4SLinus Torvalds# =========================================================================== 4611da177e4SLinus Torvalds# Rules shared between *config targets and build targets 4621da177e4SLinus Torvalds 463312a3d09SCao jin# Basic helpers built in scripts/basic/ 4644f193362SPaul SmithPHONY += scripts_basic 4651da177e4SLinus Torvaldsscripts_basic: 4661da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/basic 467638adb05SSteven Rostedt $(Q)rm -f .tmp_quiet_recordmcount 4681da177e4SLinus Torvalds 469cd05e6bdSJan Beulich# To avoid any implicit rule to kick in, define an empty command. 470cd05e6bdSJan Beulichscripts/basic/%: scripts_basic ; 471cd05e6bdSJan Beulich 4724f193362SPaul SmithPHONY += outputmakefile 473fd5f0cd6SJan Beulich# outputmakefile generates a Makefile in the output directory, if using a 474fd5f0cd6SJan Beulich# separate output directory. This allows convenient use of make in the 475fd5f0cd6SJan Beulich# output directory. 4761da177e4SLinus Torvaldsoutputmakefile: 477fd5f0cd6SJan Beulichifneq ($(KBUILD_SRC),) 47892979997SAndi Kleen $(Q)ln -fsn $(srctree) source 479fd5f0cd6SJan Beulich $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 480fd5f0cd6SJan Beulich $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 481fd5f0cd6SJan Beulichendif 4821da177e4SLinus Torvalds 483ae6b289aSChris Friesifeq ($(cc-name),clang) 484ae6b289aSChris Friesifneq ($(CROSS_COMPILE),) 485ae6b289aSChris FriesCLANG_TARGET := --target=$(notdir $(CROSS_COMPILE:%-=%)) 486ae6b289aSChris FriesGCC_TOOLCHAIN := $(realpath $(dir $(shell which $(LD)))/..) 487ae6b289aSChris Friesendif 488ae6b289aSChris Friesifneq ($(GCC_TOOLCHAIN),) 489ae6b289aSChris FriesCLANG_GCC_TC := --gcc-toolchain=$(GCC_TOOLCHAIN) 490ae6b289aSChris Friesendif 491ae6b289aSChris FriesKBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) 492ae6b289aSChris FriesKBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) 4930f0e8de3SStefan AgnerKBUILD_CFLAGS += $(call cc-option, -no-integrated-as) 4940f0e8de3SStefan AgnerKBUILD_AFLAGS += $(call cc-option, -no-integrated-as) 495ae6b289aSChris Friesendif 496ae6b289aSChris Fries 497d5028ba8SPeter ZijlstraRETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register 4982e549b2eSAndy LutomirskiRETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register 499d5028ba8SPeter ZijlstraRETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk 5002e549b2eSAndy LutomirskiRETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline 501d5028ba8SPeter ZijlstraRETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG))) 5022e549b2eSAndy LutomirskiRETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG))) 503d5028ba8SPeter Zijlstraexport RETPOLINE_CFLAGS 5042e549b2eSAndy Lutomirskiexport RETPOLINE_VDSO_CFLAGS 505d5028ba8SPeter Zijlstra 5068438ee76SMichal KubecekKBUILD_CFLAGS += $(call cc-option,-fno-PIE) 5078438ee76SMichal KubecekKBUILD_AFLAGS += $(call cc-option,-fno-PIE) 5088438ee76SMichal Kubecek 509e501ce95SPeter Zijlstra# check for 'asm goto' 510e08d6de4SMasahiro Yamadaifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y) 511e501ce95SPeter Zijlstra CC_HAVE_ASM_GOTO := 1 512e501ce95SPeter Zijlstra KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO 513e501ce95SPeter Zijlstra KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO 514e501ce95SPeter Zijlstraendif 515e501ce95SPeter Zijlstra 516315bab4eSMasahiro Yamada# The expansion should be delayed until arch/$(SRCARCH)/Makefile is included. 517315bab4eSMasahiro Yamada# Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile. 518315bab4eSMasahiro Yamada# CC_VERSION_TEXT is referenced from Kconfig (so it needs export), 519315bab4eSMasahiro Yamada# and from include/config/auto.conf.cmd to detect the compiler upgrade. 520315bab4eSMasahiro YamadaCC_VERSION_TEXT = $(shell $(CC) --version | head -n 1) 521315bab4eSMasahiro Yamada 5221da177e4SLinus Torvaldsifeq ($(config-targets),1) 5231da177e4SLinus Torvalds# =========================================================================== 5241da177e4SLinus Torvalds# *config targets only - make sure prerequisites are updated, and descend 5251da177e4SLinus Torvalds# in scripts/kconfig to make the *config target 5261da177e4SLinus Torvalds 5271da177e4SLinus Torvalds# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 5281da177e4SLinus Torvalds# KBUILD_DEFCONFIG may point out an alternative default configuration 5291da177e4SLinus Torvalds# used for 'make defconfig' 530a436bb7bSMasahiro Yamadainclude arch/$(SRCARCH)/Makefile 531315bab4eSMasahiro Yamadaexport KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT 5321da177e4SLinus Torvalds 53331110ebbSSam Ravnborgconfig: scripts_basic outputmakefile FORCE 53431110ebbSSam Ravnborg $(Q)$(MAKE) $(build)=scripts/kconfig $@ 53531110ebbSSam Ravnborg 53631110ebbSSam Ravnborg%config: scripts_basic outputmakefile FORCE 5371da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/kconfig $@ 5381da177e4SLinus Torvalds 5391da177e4SLinus Torvaldselse 5401da177e4SLinus Torvalds# =========================================================================== 5411da177e4SLinus Torvalds# Build targets only - this includes vmlinux, arch specific targets, clean 5421da177e4SLinus Torvalds# targets and others. In general all targets except *config targets. 5431da177e4SLinus Torvalds 5442c1f4f12SMasahiro Yamada# If building an external module we do not care about the all: rule 5452c1f4f12SMasahiro Yamada# but instead _all depend on modules 5462c1f4f12SMasahiro YamadaPHONY += all 5472c1f4f12SMasahiro Yamadaifeq ($(KBUILD_EXTMOD),) 5482c1f4f12SMasahiro Yamada_all: all 5492c1f4f12SMasahiro Yamadaelse 5502c1f4f12SMasahiro Yamada_all: modules 5512c1f4f12SMasahiro Yamadaendif 5522c1f4f12SMasahiro Yamada 5532c1f4f12SMasahiro Yamada# Decide whether to build built-in, modular, or both. 5542c1f4f12SMasahiro Yamada# Normally, just do built-in. 5552c1f4f12SMasahiro Yamada 5562c1f4f12SMasahiro YamadaKBUILD_MODULES := 5572c1f4f12SMasahiro YamadaKBUILD_BUILTIN := 1 5582c1f4f12SMasahiro Yamada 5592c1f4f12SMasahiro Yamada# If we have only "make modules", don't compile built-in objects. 5602c1f4f12SMasahiro Yamada# When we're building modules with modversions, we need to consider 5612c1f4f12SMasahiro Yamada# the built-in objects during the descend as well, in order to 5622c1f4f12SMasahiro Yamada# make sure the checksums are up to date before we record them. 5632c1f4f12SMasahiro Yamada 5642c1f4f12SMasahiro Yamadaifeq ($(MAKECMDGOALS),modules) 5652c1f4f12SMasahiro Yamada KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 5662c1f4f12SMasahiro Yamadaendif 5672c1f4f12SMasahiro Yamada 5682c1f4f12SMasahiro Yamada# If we have "make <whatever> modules", compile modules 5692c1f4f12SMasahiro Yamada# in addition to whatever we do anyway. 5702c1f4f12SMasahiro Yamada# Just "make" or "make all" shall build modules as well 5712c1f4f12SMasahiro Yamada 5722c1f4f12SMasahiro Yamadaifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 5732c1f4f12SMasahiro Yamada KBUILD_MODULES := 1 5742c1f4f12SMasahiro Yamadaendif 5752c1f4f12SMasahiro Yamada 5762c1f4f12SMasahiro Yamadaifeq ($(MAKECMDGOALS),) 5772c1f4f12SMasahiro Yamada KBUILD_MODULES := 1 5782c1f4f12SMasahiro Yamadaendif 5792c1f4f12SMasahiro Yamada 5802c1f4f12SMasahiro Yamadaexport KBUILD_MODULES KBUILD_BUILTIN 5812c1f4f12SMasahiro Yamada 5821da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 5831da177e4SLinus Torvalds# Objects we will link into vmlinux / subdirs we need to visit 5841da177e4SLinus Torvaldsinit-y := init/ 585df85b2d7SMarkus Trippelsdorfdrivers-y := drivers/ sound/ firmware/ 5861da177e4SLinus Torvaldsnet-y := net/ 5871da177e4SLinus Torvaldslibs-y := lib/ 5881da177e4SLinus Torvaldscore-y := usr/ 58937d9fe47SFeng Wuvirt-y := virt/ 5901da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 5911da177e4SLinus Torvalds 5921da177e4SLinus Torvaldsifeq ($(dot-config),1) 5930a16d2e8SMasahiro Yamadainclude include/config/auto.conf 594315bab4eSMasahiro Yamadaendif 5951da177e4SLinus Torvalds 596315bab4eSMasahiro Yamada# The all: target is the default when no target is given on the 597315bab4eSMasahiro Yamada# command line. 598315bab4eSMasahiro Yamada# This allow a user to issue only 'make' to build a kernel including modules 599315bab4eSMasahiro Yamada# Defaults to vmlinux, but the arch makefile usually adds further targets 600315bab4eSMasahiro Yamadaall: vmlinux 601315bab4eSMasahiro Yamada 602315bab4eSMasahiro YamadaCFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ 603315bab4eSMasahiro Yamada $(call cc-option,-fno-tree-loop-im) \ 604315bab4eSMasahiro Yamada $(call cc-disable-warning,maybe-uninitialized,) 6055aadfdebSMasahiro Yamadaexport CFLAGS_GCOV 606315bab4eSMasahiro Yamada 607315bab4eSMasahiro Yamada# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default 608315bab4eSMasahiro Yamada# values of the respective KBUILD_* variables 609315bab4eSMasahiro YamadaARCH_CPPFLAGS := 610315bab4eSMasahiro YamadaARCH_AFLAGS := 611315bab4eSMasahiro YamadaARCH_CFLAGS := 612315bab4eSMasahiro Yamadainclude arch/$(SRCARCH)/Makefile 613315bab4eSMasahiro Yamada 614315bab4eSMasahiro Yamadaifeq ($(dot-config),1) 615d7942413SMasahiro Yamadaifeq ($(may-sync-config),1) 616315bab4eSMasahiro Yamada# Read in dependencies to all Kconfig* files, make sure to run syncconfig if 617315bab4eSMasahiro Yamada# changes are detected. This should be included after arch/$(SRCARCH)/Makefile 618315bab4eSMasahiro Yamada# because some architectures define CROSS_COMPILE there. 619c955ccafSRoman Zippel-include include/config/auto.conf.cmd 6201da177e4SLinus Torvalds 6211da177e4SLinus Torvalds# To avoid any implicit rule to kick in, define an empty command 62214cdd3c4SRoman Zippel$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 6231da177e4SLinus Torvalds 62461277981SUlf Magnusson# The actual configuration files used during the build are stored in 62561277981SUlf Magnusson# include/generated/ and include/config/. Update them if .config is newer than 62661277981SUlf Magnusson# include/config/auto.conf (which mirrors .config). 627bc081dd6SMichal Marekinclude/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 628911a91c3SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig 6291da177e4SLinus Torvaldselse 630d7942413SMasahiro Yamada# External modules and some install targets need include/generated/autoconf.h 631d7942413SMasahiro Yamada# and include/config/auto.conf but do not care if they are up-to-date. 632d7942413SMasahiro Yamada# Use auto.conf to trigger the test 6339ee4e336SSam RavnborgPHONY += include/config/auto.conf 6349ee4e336SSam Ravnborg 6359ee4e336SSam Ravnborginclude/config/auto.conf: 636264a2683SSam Ravnborg $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 6375369f550SMichal Marek echo >&2; \ 6385369f550SMichal Marek echo >&2 " ERROR: Kernel configuration is invalid."; \ 6395369f550SMichal Marek echo >&2 " include/generated/autoconf.h or $@ are missing.";\ 6405369f550SMichal Marek echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 6415369f550SMichal Marek echo >&2 ; \ 6429ee4e336SSam Ravnborg /bin/false) 6439ee4e336SSam Ravnborg 644d7942413SMasahiro Yamadaendif # may-sync-config 6459ee4e336SSam Ravnborgendif # $(dot-config) 6461da177e4SLinus Torvalds 647a1c48bb1SGeert UytterhoevenKBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) 648ef6000b4SLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) 649bd664f6bSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) 650bd664f6bSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) 651bd664f6bSLinus TorvaldsKBUILD_CFLAGS += $(call cc-disable-warning, int-in-bool-context) 652a1c48bb1SGeert Uytterhoeven 6531da177e4SLinus Torvaldsifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 6546748cb3cSBehan WebsterKBUILD_CFLAGS += $(call cc-option,-Oz,-Os) 6556748cb3cSBehan WebsterKBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) 6561da177e4SLinus Torvaldselse 657815eb71eSArnd Bergmannifdef CONFIG_PROFILE_ALL_BRANCHES 658a76bcf55SArnd BergmannKBUILD_CFLAGS += -O2 $(call cc-disable-warning,maybe-uninitialized,) 659815eb71eSArnd Bergmannelse 660a0f97e06SSam RavnborgKBUILD_CFLAGS += -O2 6611da177e4SLinus Torvaldsendif 662815eb71eSArnd Bergmannendif 6631da177e4SLinus Torvalds 664a76bcf55SArnd BergmannKBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, \ 665a76bcf55SArnd Bergmann $(call cc-disable-warning,maybe-uninitialized,)) 666a76bcf55SArnd Bergmann 66769102311SJiri Kosina# Tell gcc to never replace conditional load with a non-conditional one 66869102311SJiri KosinaKBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) 66969102311SJiri Kosina 670d677a4d6SVictor Chibotaruinclude scripts/Makefile.kcov 6716b90bd4bSEmese Revfyinclude scripts/Makefile.gcc-plugins 6726b90bd4bSEmese Revfy 6731873e870SAndi Kleenifdef CONFIG_READABLE_ASM 6741873e870SAndi Kleen# Disable optimizations that make assembler listings hard to read. 6751873e870SAndi Kleen# reorder blocks reorders the control in the function 6761873e870SAndi Kleen# ipa clone creates specialized cloned functions 6771873e870SAndi Kleen# partial inlining inlines only parts of functions 6781873e870SAndi KleenKBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ 6791873e870SAndi Kleen $(call cc-option,-fno-ipa-cp-clone,) \ 6801873e870SAndi Kleen $(call cc-option,-fno-partial-inlining) 6811873e870SAndi Kleenendif 6821873e870SAndi Kleen 68308f67461SMike Frysingerifneq ($(CONFIG_FRAME_WARN),0) 68435bb5b1eSAndi KleenKBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 68535bb5b1eSAndi Kleenendif 68635bb5b1eSAndi Kleen 6872a61f474SMasahiro Yamadastackp-flags-$(CONFIG_CC_HAS_STACKPROTECTOR_NONE) := -fno-stack-protector 688050e9baaSLinus Torvaldsstackp-flags-$(CONFIG_STACKPROTECTOR) := -fstack-protector 689050e9baaSLinus Torvaldsstackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong 6902a61f474SMasahiro Yamada 6912a61f474SMasahiro YamadaKBUILD_CFLAGS += $(stackp-flags-y) 692e06b8b98SSam Ravnborg 693cfe17c9bSMasahiro Yamadaifeq ($(cc-name),clang) 694cfe17c9bSMasahiro YamadaKBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,) 695cfe17c9bSMasahiro YamadaKBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier) 696cfe17c9bSMasahiro YamadaKBUILD_CFLAGS += $(call cc-disable-warning, gnu) 697cfe17c9bSMasahiro YamadaKBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 698cfe17c9bSMasahiro Yamada# Quiet clang warning: comparison of unsigned expression < 0 is always false 699cfe17c9bSMasahiro YamadaKBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare) 700cfe17c9bSMasahiro Yamada# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the 701cfe17c9bSMasahiro Yamada# source of a reference will be _MergedGlobals and not on of the whitelisted names. 702cfe17c9bSMasahiro Yamada# See modpost pattern 2 703cfe17c9bSMasahiro YamadaKBUILD_CFLAGS += $(call cc-option, -mno-global-merge,) 704cfe17c9bSMasahiro YamadaKBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior) 705cfe17c9bSMasahiro Yamadaelse 706cfe17c9bSMasahiro Yamada 707cfe17c9bSMasahiro Yamada# These warnings generated too much noise in a regular build. 708cfe17c9bSMasahiro Yamada# Use make W=1 to enable them (see scripts/Makefile.extrawarn) 709cfe17c9bSMasahiro YamadaKBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 710cfe17c9bSMasahiro Yamadaendif 711cfe17c9bSMasahiro Yamada 7120a5f4176SSodagudi PrasadKBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable) 7131da177e4SLinus Torvaldsifdef CONFIG_FRAME_POINTER 714a0f97e06SSam RavnborgKBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 7151da177e4SLinus Torvaldselse 7167e9501fdSRabin Vincent# Some targets (ARM with Thumb2, for example), can't be built with frame 7177e9501fdSRabin Vincent# pointers. For those, we don't have FUNCTION_TRACER automatically 7187e9501fdSRabin Vincent# select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 7197e9501fdSRabin Vincent# incompatible with -fomit-frame-pointer with current GCC, so we don't use 7207e9501fdSRabin Vincent# -fomit-frame-pointer with FUNCTION_TRACER. 7217e9501fdSRabin Vincentifndef CONFIG_FUNCTION_TRACER 722a0f97e06SSam RavnborgKBUILD_CFLAGS += -fomit-frame-pointer 7231da177e4SLinus Torvaldsendif 7247e9501fdSRabin Vincentendif 7251da177e4SLinus Torvalds 7262062afb4SLinus TorvaldsKBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments) 7272062afb4SLinus Torvalds 7281da177e4SLinus Torvaldsifdef CONFIG_DEBUG_INFO 729866ced95SAndi Kleenifdef CONFIG_DEBUG_INFO_SPLIT 730866ced95SAndi KleenKBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g) 731866ced95SAndi Kleenelse 732a0f97e06SSam RavnborgKBUILD_CFLAGS += -g 733866ced95SAndi Kleenendif 7342288328cSBehan WebsterKBUILD_AFLAGS += -Wa,-gdwarf-2 7351da177e4SLinus Torvaldsendif 736bfaf2dd3SAndi Kleenifdef CONFIG_DEBUG_INFO_DWARF4 737bfaf2dd3SAndi KleenKBUILD_CFLAGS += $(call cc-option, -gdwarf-4,) 738bfaf2dd3SAndi Kleenendif 7391da177e4SLinus Torvalds 740d6f4ceb7SAndi Kleenifdef CONFIG_DEBUG_INFO_REDUCED 741e82c4bb8SAndi KleenKBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ 742e82c4bb8SAndi Kleen $(call cc-option,-fno-var-tracking) 743d6f4ceb7SAndi Kleenendif 744d6f4ceb7SAndi Kleen 745606576ceSSteven Rostedtifdef CONFIG_FUNCTION_TRACER 746c0a80c0cSHeiko Carstensifndef CC_FLAGS_FTRACE 747c0a80c0cSHeiko CarstensCC_FLAGS_FTRACE := -pg 748c0a80c0cSHeiko Carstensendif 74907d04081SVasily Gorbikifdef CONFIG_FTRACE_MCOUNT_RECORD 75007d04081SVasily Gorbik # gcc 5 supports generating the mcount tables directly 75107d04081SVasily Gorbik ifeq ($(call cc-option-yn,-mrecord-mcount),y) 75207d04081SVasily Gorbik CC_FLAGS_FTRACE += -mrecord-mcount 75307d04081SVasily Gorbik export CC_USING_RECORD_MCOUNT := 1 754a2546faeSSteven Rostedt endif 7552f4df001SVasily Gorbik ifdef CONFIG_HAVE_NOP_MCOUNT 7562f4df001SVasily Gorbik ifeq ($(call cc-option-yn, -mnop-mcount),y) 7572f4df001SVasily Gorbik CC_FLAGS_FTRACE += -mnop-mcount 7582f4df001SVasily Gorbik CC_FLAGS_USING += -DCC_USING_NOP_MCOUNT 7592f4df001SVasily Gorbik endif 7602f4df001SVasily Gorbik endif 76107d04081SVasily Gorbikendif 762a2546faeSSteven Rostedtifdef CONFIG_HAVE_FENTRY 763f28bc3c3SVasily Gorbik ifeq ($(call cc-option-yn, -mfentry),y) 764f28bc3c3SVasily Gorbik CC_FLAGS_FTRACE += -mfentry 765f28bc3c3SVasily Gorbik CC_FLAGS_USING += -DCC_USING_FENTRY 766a2546faeSSteven Rostedt endif 767f28bc3c3SVasily Gorbikendif 768f28bc3c3SVasily Gorbikexport CC_FLAGS_FTRACE 769f28bc3c3SVasily GorbikKBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_FLAGS_USING) 770f28bc3c3SVasily GorbikKBUILD_AFLAGS += $(CC_FLAGS_USING) 77172441cb1SSteven Rostedtifdef CONFIG_DYNAMIC_FTRACE 772cf4db259SSteven Rostedt ifdef CONFIG_HAVE_C_RECORDMCOUNT 77372441cb1SSteven Rostedt BUILD_C_RECORDMCOUNT := y 77472441cb1SSteven Rostedt export BUILD_C_RECORDMCOUNT 77572441cb1SSteven Rostedt endif 77672441cb1SSteven Rostedtendif 77716444a8aSArnaldo Carvalho de Meloendif 77816444a8aSArnaldo Carvalho de Melo 77991341d4bSSam Ravnborg# We trigger additional mismatches with less inlining 78091341d4bSSam Ravnborgifdef CONFIG_DEBUG_SECTION_MISMATCH 78191341d4bSSam RavnborgKBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 78291341d4bSSam Ravnborgendif 78391341d4bSSam Ravnborg 78490ad4052SMasahiro Yamadaifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION 785e85d1d65SMasahiro YamadaKBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections 786e85d1d65SMasahiro YamadaLDFLAGS_vmlinux += --gc-sections 78790ad4052SMasahiro Yamadaendif 78890ad4052SMasahiro Yamada 789e8e69931SSam Ravnborg# arch Makefile may override CC so keep this after arch Makefile is included 790e08d6de4SMasahiro YamadaNOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 791e8e69931SSam Ravnborg 7921da177e4SLinus Torvalds# warn about C99 declaration after statement 793a0f97e06SSam RavnborgKBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 7941da177e4SLinus Torvalds 795070b98bfSSam Ravnborg# disable pointer signed / unsigned warnings in gcc 4.0 7968417da6fSMichal MarekKBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 7971da177e4SLinus Torvalds 798fe8d0a41SKirill Smelkov# disable invalid "can't wrap" optimizations for signed / pointers 799a137802eSLinus TorvaldsKBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 800d0115552SLinus Torvalds 80187e0d4f0SDaniel Borkmann# clang sets -fmerge-all-constants by default as optimization, but this 80287e0d4f0SDaniel Borkmann# is non-conforming behavior for C and in fact breaks the kernel, so we 80387e0d4f0SDaniel Borkmann# need to disable it here generally. 80487e0d4f0SDaniel BorkmannKBUILD_CFLAGS += $(call cc-option,-fno-merge-all-constants) 80587e0d4f0SDaniel Borkmann 80687e0d4f0SDaniel Borkmann# for gcc -fno-merge-all-constants disables everything, but it is fine 80787e0d4f0SDaniel Borkmann# to have actual conforming behavior enabled. 80887e0d4f0SDaniel BorkmannKBUILD_CFLAGS += $(call cc-option,-fmerge-constants) 80987e0d4f0SDaniel Borkmann 8103ce120b1SLinus Torvalds# Make sure -fstack-check isn't enabled (like gentoo apparently did) 8113ce120b1SLinus TorvaldsKBUILD_CFLAGS += $(call cc-option,-fno-stack-check,) 8123ce120b1SLinus Torvalds 8138f7f5c9fSAndi Kleen# conserve stack if available 8148f7f5c9fSAndi KleenKBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 8158f7f5c9fSAndi Kleen 81680970472SSergei Trofimovich# disallow errors like 'EXPORT_GPL(foo);' with missing header 81780970472SSergei TrofimovichKBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) 81880970472SSergei Trofimovich 81980970472SSergei Trofimovich# require functions to have arguments in prototypes, not empty 'int foo()' 82080970472SSergei TrofimovichKBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) 82180970472SSergei Trofimovich 822fe7c36c7SJosh Triplett# Prohibit date/time macros, which would make the build non-deterministic 823fe7c36c7SJosh TriplettKBUILD_CFLAGS += $(call cc-option,-Werror=date-time) 824fe7c36c7SJosh Triplett 825ea8daa7bSDaniel Wagner# enforce correct pointer usage 826ea8daa7bSDaniel WagnerKBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types) 827ea8daa7bSDaniel Wagner 828c834f0e8SKees Cook# Require designated initializers for all marked structures 829c834f0e8SKees CookKBUILD_CFLAGS += $(call cc-option,-Werror=designated-init) 830c834f0e8SKees Cook 831a73619a8SMasahiro Yamada# change __FILE__ to the relative path from the srctree 832a73619a8SMasahiro YamadaKBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=) 833a73619a8SMasahiro Yamada 83440df759eSMichal Marek# use the deterministic mode of AR if available 83540df759eSMichal MarekKBUILD_ARFLAGS := $(call ar-option,D) 83640df759eSMichal Marek 837a436bb7bSMasahiro Yamadainclude scripts/Makefile.kasan 838a436bb7bSMasahiro Yamadainclude scripts/Makefile.extrawarn 839c6d30853SAndrey Ryabinininclude scripts/Makefile.ubsan 840a86fe353SMasahiro Yamada 84161754c18SMichal Marek# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the 84261754c18SMichal Marek# last assignments 84361754c18SMichal MarekKBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS) 84461754c18SMichal MarekKBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS) 84561754c18SMichal MarekKBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS) 84652bcc330SSam Ravnborg 84718991197SRoland McGrath# Use --build-id when available. 8480da4fabdSMasahiro YamadaLDFLAGS_BUILD_ID := $(call ld-option, --build-id) 8496588169dSSam RavnborgKBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 85018991197SRoland McGrathLDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 85118991197SRoland McGrath 8525d7d18f5SDavid Howellsifeq ($(CONFIG_STRIP_ASM_SYMS),y) 853d79a2719SAndi KleenLDFLAGS_vmlinux += $(call ld-option, -X,) 8545d7d18f5SDavid Howellsendif 8555d7d18f5SDavid Howells 85614516765SLuc Van Oostenryck# insure the checker run with the right endianness 85714516765SLuc Van OostenryckCHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian) 85814516765SLuc Van Oostenryck 8591f2f01b1SLuc Van Oostenryck# the checker needs the correct machine size 8601f2f01b1SLuc Van OostenryckCHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32) 8611f2f01b1SLuc Van Oostenryck 8621da177e4SLinus Torvalds# Default kernel image to build when no specific target is given. 8631da177e4SLinus Torvalds# KBUILD_IMAGE may be overruled on the command line or 8641da177e4SLinus Torvalds# set in the environment 8651da177e4SLinus Torvalds# Also any assignments in arch/$(ARCH)/Makefile take precedence over 8661da177e4SLinus Torvalds# this default value 8671da177e4SLinus Torvaldsexport KBUILD_IMAGE ?= vmlinux 8681da177e4SLinus Torvalds 8691da177e4SLinus Torvalds# 8701da177e4SLinus Torvalds# INSTALL_PATH specifies where to place the updated kernel and system map 8711da177e4SLinus Torvalds# images. Default is /boot, but you can set it to other values 8721da177e4SLinus Torvaldsexport INSTALL_PATH ?= /boot 8731da177e4SLinus Torvalds 8741da177e4SLinus Torvalds# 875f4d4ffc0SJason Cooper# INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots. 876f4d4ffc0SJason Cooper# Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as 877f4d4ffc0SJason Cooper# an argument if needed. Otherwise it defaults to the kernel install path 878f4d4ffc0SJason Cooper# 879f4d4ffc0SJason Cooperexport INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE) 880f4d4ffc0SJason Cooper 881f4d4ffc0SJason Cooper# 8821da177e4SLinus Torvalds# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 8831da177e4SLinus Torvalds# relocations required by build roots. This is not defined in the 884070b98bfSSam Ravnborg# makefile but the argument can be passed to make if needed. 8851da177e4SLinus Torvalds# 8861da177e4SLinus Torvalds 887df9df036SSam RavnborgMODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 8881da177e4SLinus Torvaldsexport MODLIB 8891da177e4SLinus Torvalds 890ac031f26STheodore Ts'o# 8912ea03891SSam Ravnborg# INSTALL_MOD_STRIP, if defined, will cause modules to be 8922ea03891SSam Ravnborg# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 8932ea03891SSam Ravnborg# the default option --strip-debug will be used. Otherwise, 894177b241dSGilles Espinasse# INSTALL_MOD_STRIP value will be used as the options to the strip command. 8952ea03891SSam Ravnborg 896ac031f26STheodore Ts'oifdef INSTALL_MOD_STRIP 897ac031f26STheodore Ts'oifeq ($(INSTALL_MOD_STRIP),1) 8982ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) --strip-debug 899ac031f26STheodore Ts'oelse 9002ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 901ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP=1 902ac031f26STheodore Ts'oelse 9032ea03891SSam Ravnborgmod_strip_cmd = true 904ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP 905ac031f26STheodore Ts'oexport mod_strip_cmd 906ac031f26STheodore Ts'o 907beb50df3SBertrand Jacquin# CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed 908beb50df3SBertrand Jacquin# after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP 909beb50df3SBertrand Jacquin# or CONFIG_MODULE_COMPRESS_XZ. 910beb50df3SBertrand Jacquin 911beb50df3SBertrand Jacquinmod_compress_cmd = true 912beb50df3SBertrand Jacquinifdef CONFIG_MODULE_COMPRESS 913beb50df3SBertrand Jacquin ifdef CONFIG_MODULE_COMPRESS_GZIP 9143d1450d5SJason A. Donenfeld mod_compress_cmd = gzip -n -f 915beb50df3SBertrand Jacquin endif # CONFIG_MODULE_COMPRESS_GZIP 916beb50df3SBertrand Jacquin ifdef CONFIG_MODULE_COMPRESS_XZ 9173d1450d5SJason A. Donenfeld mod_compress_cmd = xz -f 918beb50df3SBertrand Jacquin endif # CONFIG_MODULE_COMPRESS_XZ 919beb50df3SBertrand Jacquinendif # CONFIG_MODULE_COMPRESS 920beb50df3SBertrand Jacquinexport mod_compress_cmd 921beb50df3SBertrand Jacquin 9221bf49dd4SP J P# Select initial ramdisk compression format, default is gzip(1). 9231bf49dd4SP J P# This shall be used by the dracut(8) tool while creating an initramfs image. 9241bf49dd4SP J P# 9257ac18156SJan BeulichINITRD_COMPRESS-y := gzip 9267ac18156SJan BeulichINITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 9277ac18156SJan BeulichINITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma 9287ac18156SJan BeulichINITRD_COMPRESS-$(CONFIG_RD_XZ) := xz 9297ac18156SJan BeulichINITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo 9307ac18156SJan BeulichINITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 931b7000adeSLinus Torvalds# do not export INITRD_COMPRESS, since we didn't actually 932b7000adeSLinus Torvalds# choose a sane default compression above. 933b7000adeSLinus Torvalds# export INITRD_COMPRESS := $(INITRD_COMPRESS-y) 9341da177e4SLinus Torvalds 935d9d8d7edSMichal Marekifdef CONFIG_MODULE_SIG_ALL 9363ee550f1SDavid Woodhouse$(eval $(call config_filename,MODULE_SIG_KEY)) 9373ee550f1SDavid Woodhouse 9383ee550f1SDavid Woodhousemod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 939e2a666d5SRusty Russellelse 940e2a666d5SRusty Russellmod_sign_cmd = true 941e2a666d5SRusty Russellendif 942e2a666d5SRusty Russellexport mod_sign_cmd 943e2a666d5SRusty Russell 9449f0c18aeSJosh Poimboeufifdef CONFIG_STACK_VALIDATION 9459f0c18aeSJosh Poimboeuf has_libelf := $(call try-run,\ 9469f0c18aeSJosh Poimboeuf echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf -,1,0) 9479f0c18aeSJosh Poimboeuf ifeq ($(has_libelf),1) 9489f0c18aeSJosh Poimboeuf objtool_target := tools/objtool FORCE 9499f0c18aeSJosh Poimboeuf else 95011af8474SJosh Poimboeuf ifdef CONFIG_UNWINDER_ORC 95111af8474SJosh Poimboeuf $(error "Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel") 9523dd40cb3SJosh Poimboeuf else 9533dd40cb3SJosh Poimboeuf $(warning "Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel") 9543dd40cb3SJosh Poimboeuf endif 9559f0c18aeSJosh Poimboeuf SKIP_STACK_VALIDATION := 1 9569f0c18aeSJosh Poimboeuf export SKIP_STACK_VALIDATION 9579f0c18aeSJosh Poimboeuf endif 9589f0c18aeSJosh Poimboeufendif 9599f0c18aeSJosh Poimboeuf 960e2a666d5SRusty Russell 9611da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 962cfc411e7SDavid Howellscore-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/ 9631da177e4SLinus Torvalds 9641da177e4SLinus Torvaldsvmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 9651da177e4SLinus Torvalds $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 96637d9fe47SFeng Wu $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y))) 9671da177e4SLinus Torvalds 9681da177e4SLinus Torvaldsvmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 96937d9fe47SFeng Wu $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-)))) 9701da177e4SLinus Torvalds 971f49821eeSNicholas Piggininit-y := $(patsubst %/, %/built-in.a, $(init-y)) 972f49821eeSNicholas Piggincore-y := $(patsubst %/, %/built-in.a, $(core-y)) 973f49821eeSNicholas Piggindrivers-y := $(patsubst %/, %/built-in.a, $(drivers-y)) 974f49821eeSNicholas Pigginnet-y := $(patsubst %/, %/built-in.a, $(net-y)) 9751da177e4SLinus Torvaldslibs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 976f49821eeSNicholas Pigginlibs-y2 := $(patsubst %/, %/built-in.a, $(filter-out %.a, $(libs-y))) 977f49821eeSNicholas Pigginvirt-y := $(patsubst %/, %/built-in.a, $(virt-y)) 9781da177e4SLinus Torvalds 9791f2bfbd0SSam Ravnborg# Externally visible symbols (used by link-vmlinux.sh) 98095698570SSam Ravnborgexport KBUILD_VMLINUX_INIT := $(head-y) $(init-y) 9813a166fc2SNicholas Pigginexport KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y2) $(drivers-y) $(net-y) $(virt-y) 9823a166fc2SNicholas Pigginexport KBUILD_VMLINUX_LIBS := $(libs-y1) 98395698570SSam Ravnborgexport KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds 9841f2bfbd0SSam Ravnborgexport LDFLAGS_vmlinux 985312a3d09SCao jin# used by scripts/package/Makefile 98637d9fe47SFeng Wuexport KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools) 9871da177e4SLinus Torvalds 9883a166fc2SNicholas Pigginvmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) $(KBUILD_VMLINUX_LIBS) 9891da177e4SLinus Torvalds 9903fdc7d3fSMasahiro Yamada# Recurse until adjust_autoksyms.sh is satisfied 9913fdc7d3fSMasahiro YamadaPHONY += autoksyms_recursive 9923fdc7d3fSMasahiro Yamadaautoksyms_recursive: $(vmlinux-deps) 9932441e78bSNicolas Pitreifdef CONFIG_TRIM_UNUSED_KSYMS 994ba79d401SNicolas Ferre $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ 99586556392SNicolas Pitre "$(MAKE) -f $(srctree)/Makefile vmlinux" 9962441e78bSNicolas Pitreendif 99723121ca2SNicolas Pitre 9981f50b80aSMasahiro Yamada# For the kernel to actually contain only the needed exported symbols, 9991f50b80aSMasahiro Yamada# we have to build modules as well to determine what those symbols are. 10001f50b80aSMasahiro Yamada# (this can be evaluated only once include/config/auto.conf has been included) 10011f50b80aSMasahiro Yamadaifdef CONFIG_TRIM_UNUSED_KSYMS 10021f50b80aSMasahiro Yamada KBUILD_MODULES := 1 10031f50b80aSMasahiro Yamadaendif 10041f50b80aSMasahiro Yamada 100507a422bbSMasahiro Yamadaautoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h) 100607a422bbSMasahiro Yamada 100707a422bbSMasahiro Yamada$(autoksyms_h): 100807a422bbSMasahiro Yamada $(Q)mkdir -p $(dir $@) 100907a422bbSMasahiro Yamada $(Q)touch $@ 101023121ca2SNicolas Pitre 1011fbe6e37dSNicholas PigginARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) 1012fbe6e37dSNicholas Piggin 1013fbe6e37dSNicholas Piggin# Final link of vmlinux with optional arch pass after final link 1014fbe6e37dSNicholas Piggincmd_link-vmlinux = \ 1015d503ac53SMasahiro Yamada $(CONFIG_SHELL) $< $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_vmlinux) ; \ 1016fbe6e37dSNicholas Piggin $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) 10172441e78bSNicolas Pitre 10183fdc7d3fSMasahiro Yamadavmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE 10193fdc7d3fSMasahiro Yamadaifdef CONFIG_HEADERS_CHECK 10203fdc7d3fSMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 10213fdc7d3fSMasahiro Yamadaendif 10223fdc7d3fSMasahiro Yamadaifdef CONFIG_GDB_SCRIPTS 10233fdc7d3fSMasahiro Yamada $(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py) 10243fdc7d3fSMasahiro Yamadaendif 10251f2bfbd0SSam Ravnborg +$(call if_changed,link-vmlinux) 1026741f98feSSam Ravnborg 10273fca1700SMasahiro Yamada# Build samples along the rest of the kernel. This needs headers_install. 1028dd92478aSNicolas Pitreifdef CONFIG_SAMPLES 1029dd92478aSNicolas Pitrevmlinux-dirs += samples 10303fca1700SMasahiro Yamadasamples: headers_install 1031dd92478aSNicolas Pitreendif 1032dd92478aSNicolas Pitre 10331da177e4SLinus Torvalds# The actual objects are generated when descending, 10341da177e4SLinus Torvalds# make sure no implicit rule kicks in 10351f2bfbd0SSam Ravnborg$(sort $(vmlinux-deps)): $(vmlinux-dirs) ; 10361da177e4SLinus Torvalds 10371da177e4SLinus Torvalds# Handle descending into subdirectories listed in $(vmlinux-dirs) 10381da177e4SLinus Torvalds# Preset locale variables to speed up the build process. Limit locale 10391da177e4SLinus Torvalds# tweaks to this spot to avoid wrong language settings when running 10401da177e4SLinus Torvalds# make menuconfig etc. 10411da177e4SLinus Torvalds# Error messages still appears in the original language 10421da177e4SLinus Torvalds 10434f193362SPaul SmithPHONY += $(vmlinux-dirs) 10445bb78269SSam Ravnborg$(vmlinux-dirs): prepare scripts 1045f7adc312SMasahiro Yamada $(Q)$(MAKE) $(build)=$@ need-builtin=1 10461da177e4SLinus Torvalds 10470d0e7718SMichal Marekdefine filechk_kernel.release 10480d0e7718SMichal Marek echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 10490d0e7718SMichal Marekendef 10500d0e7718SMichal Marek 105183a35e36SGeert Uytterhoeven# Store (new) KERNELRELEASE string in include/config/kernel.release 10522063945fSMasahiro Yamadainclude/config/kernel.release: $(srctree)/Makefile FORCE 10530d0e7718SMichal Marek $(call filechk,kernel.release) 1054cb58455cSSam Ravnborg 1055d8821622SMasahiro Yamada# Additional helpers built in scripts/ 1056d8821622SMasahiro Yamada# Carefully list dependencies so we do not try to build scripts twice 1057d8821622SMasahiro Yamada# in parallel 1058d8821622SMasahiro YamadaPHONY += scripts 10592063945fSMasahiro Yamadascripts: scripts_basic asm-generic gcc-plugins $(autoksyms_h) 1060d8821622SMasahiro Yamada $(Q)$(MAKE) $(build)=$(@) 1061cb58455cSSam Ravnborg 10621da177e4SLinus Torvalds# Things we need to do before we recursively start building the kernel 10635bb78269SSam Ravnborg# or the modules are listed in "prepare". 10645bb78269SSam Ravnborg# A multi level approach is used. prepareN is processed before prepareN-1. 10655bb78269SSam Ravnborg# archprepare is used in arch Makefiles and when processed asm symlink, 10665bb78269SSam Ravnborg# version.h and scripts_basic is processed / created. 10671da177e4SLinus Torvalds 10685bb78269SSam Ravnborg# Listed in dependency order 10694f193362SPaul SmithPHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 10705bb78269SSam Ravnborg 107186feeaa8SSam Ravnborg# prepare3 is used to check if we are building in a separate output directory, 10721da177e4SLinus Torvalds# and if so do: 10731da177e4SLinus Torvalds# 1) Check that make has not been executed in the kernel src $(srctree) 1074f1d28fb0SRoman Zippelprepare3: include/config/kernel.release 10751da177e4SLinus Torvaldsifneq ($(KBUILD_SRC),) 1076fd54f502SMike Frysinger @$(kecho) ' Using $(srctree) as source for kernel' 1077c955ccafSRoman Zippel $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 10785369f550SMichal Marek echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ 10795369f550SMichal Marek echo >&2 " in the '$(srctree)' directory.";\ 10801da177e4SLinus Torvalds /bin/false; \ 10811da177e4SLinus Torvalds fi; 10821da177e4SLinus Torvaldsendif 10831da177e4SLinus Torvalds 1084c965b105SKees Cook# prepare2 creates a makefile if using a separate output directory. 1085c965b105SKees Cook# From this point forward, .config has been reprocessed, so any rules 1086c965b105SKees Cook# that need to depend on updated CONFIG_* values can be checked here. 10872a61f474SMasahiro Yamadaprepare2: prepare3 outputmakefile asm-generic 10881da177e4SLinus Torvalds 10892063945fSMasahiro Yamadaprepare1: prepare2 $(version_h) $(autoksyms_h) include/generated/utsrelease.h 10907bb9d092SSam Ravnborg $(cmd_crmodverdir) 10911da177e4SLinus Torvalds 10926520fe55SH. Peter Anvinarchprepare: archheaders archscripts prepare1 scripts_basic 10935bb78269SSam Ravnborg 10946b90bd4bSEmese Revfyprepare0: archprepare gcc-plugins 10958d36a623SSam Ravnborg $(Q)$(MAKE) $(build)=. 109686feeaa8SSam Ravnborg 10971da177e4SLinus Torvalds# All the preparing.. 1098b9ab5ebbSJosh Poimboeufprepare: prepare0 prepare-objtool 1099b9ab5ebbSJosh Poimboeuf 11002c1f4f12SMasahiro Yamada# Support for using generic headers in asm-generic 11012c1f4f12SMasahiro YamadaPHONY += asm-generic uapi-asm-generic 11022c1f4f12SMasahiro Yamadaasm-generic: uapi-asm-generic 11032c1f4f12SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 11042c1f4f12SMasahiro Yamada src=asm obj=arch/$(SRCARCH)/include/generated/asm 11052c1f4f12SMasahiro Yamadauapi-asm-generic: 11062c1f4f12SMasahiro Yamada $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 11072c1f4f12SMasahiro Yamada src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm 11082c1f4f12SMasahiro Yamada 1109b9ab5ebbSJosh PoimboeufPHONY += prepare-objtool 11103b27a0c8SJosh Poimboeufprepare-objtool: $(objtool_target) 11111da177e4SLinus Torvalds 11121da177e4SLinus Torvalds# Generate some files 11131da177e4SLinus Torvalds# --------------------------------------------------------------------------- 11141da177e4SLinus Torvalds 11151da177e4SLinus Torvalds# KERNELRELEASE can change from a few different places, meaning version.h 11161da177e4SLinus Torvalds# needs to be updated, so this check is forced on all builds 11171da177e4SLinus Torvalds 11181da177e4SLinus Torvaldsuts_len := 64 111963104eecSSam Ravnborgdefine filechk_utsrelease.h 11201da177e4SLinus Torvalds if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 11211da177e4SLinus Torvalds echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 11221da177e4SLinus Torvalds exit 1; \ 11231da177e4SLinus Torvalds fi; \ 112463104eecSSam Ravnborg (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 11251da177e4SLinus Torvaldsendef 11261da177e4SLinus Torvalds 112763104eecSSam Ravnborgdefine filechk_version.h 112863104eecSSam Ravnborg (echo \#define LINUX_VERSION_CODE $(shell \ 112978d3bb44SMichal Marek expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 113063104eecSSam Ravnborg echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 113163104eecSSam Ravnborgendef 113263104eecSSam Ravnborg 113343fee2b2SMasahiro Yamada$(version_h): FORCE 11341da177e4SLinus Torvalds $(call filechk,version.h) 1135223c24a7SMichal Marek $(Q)rm -f $(old_version_h) 11361da177e4SLinus Torvalds 1137273b281fSSam Ravnborginclude/generated/utsrelease.h: include/config/kernel.release FORCE 113863104eecSSam Ravnborg $(call filechk,utsrelease.h) 113963104eecSSam Ravnborg 1140179efcb4SVegard NossumPHONY += headerdep 1141179efcb4SVegard Nossumheaderdep: 11429663d989SPeter Foley $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 11439663d989SPeter Foley $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1144179efcb4SVegard Nossum 11451da177e4SLinus Torvalds# --------------------------------------------------------------------------- 11468d730cfbSDavid Woodhouse# Kernel headers 11478d730cfbSDavid Woodhouse 1148e6883b18SSam Ravnborg#Default location for installed headers 1149e6883b18SSam Ravnborgexport INSTALL_HDR_PATH = $(objtree)/usr 1150e6883b18SSam Ravnborg 11519d022c54SMasahiro Yamada# If we do an all arch process set dst to include/arch-$(SRCARCH) 11529d022c54SMasahiro Yamadahdr-dst = $(if $(KBUILD_HEADERS), dst=include/arch-$(SRCARCH), dst=include) 1153e6883b18SSam Ravnborg 1154052ad274SH. Peter AnvinPHONY += archheaders 1155052ad274SH. Peter Anvinarchheaders: 1156052ad274SH. Peter Anvin 11576520fe55SH. Peter AnvinPHONY += archscripts 11586520fe55SH. Peter Anvinarchscripts: 11596520fe55SH. Peter Anvin 1160e6883b18SSam RavnborgPHONY += __headers 1161a9d9a400SMasahiro Yamada__headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts 1162e1b702cfSMike Waychison $(Q)$(MAKE) $(build)=scripts build_unifdef 11636d716275SDavid Woodhouse 11646d716275SDavid WoodhousePHONY += headers_install_all 11652fb9b1bdSSam Ravnborgheaders_install_all: 11662fb9b1bdSSam Ravnborg $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 11676d716275SDavid Woodhouse 11688d730cfbSDavid WoodhousePHONY += headers_install 1169e6883b18SSam Ravnborgheaders_install: __headers 11709d022c54SMasahiro Yamada $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \ 11712fb9b1bdSSam Ravnborg $(error Headers not exportable for the $(SRCARCH) architecture)) 1172a8ff49a1SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include 11739d022c54SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) 11748d730cfbSDavid Woodhouse 11751f85712eSMike FrysingerPHONY += headers_check_all 11761f85712eSMike Frysingerheaders_check_all: headers_install_all 11772fb9b1bdSSam Ravnborg $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 11781f85712eSMike Frysinger 117968475359SDavid WoodhousePHONY += headers_check 118068475359SDavid Woodhouseheaders_check: headers_install 1181a8ff49a1SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1 11829d022c54SMasahiro Yamada $(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) HDRCHECK=1 118368475359SDavid Woodhouse 11848d730cfbSDavid Woodhouse# --------------------------------------------------------------------------- 11855a5da78bSShuah Khan# Kernel selftest 11865a5da78bSShuah Khan 11875a5da78bSShuah KhanPHONY += kselftest 11885a5da78bSShuah Khankselftest: 11892bc84526SShuah Khan $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests 11905a5da78bSShuah Khan 1191801d2e9fSShuah KhanPHONY += kselftest-clean 1192dcb825a9SWang Longkselftest-clean: 11932bc84526SShuah Khan $(Q)$(MAKE) -C $(srctree)/tools/testing/selftests clean 1194dcb825a9SWang Long 11953d6dee7aSBamvor Jian ZhangPHONY += kselftest-merge 11963d6dee7aSBamvor Jian Zhangkselftest-merge: 11973d6dee7aSBamvor Jian Zhang $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) 11983d6dee7aSBamvor Jian Zhang $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ 11993d6dee7aSBamvor Jian Zhang -m $(objtree)/.config \ 12003d6dee7aSBamvor Jian Zhang $(srctree)/tools/testing/selftests/*/config 12013d6dee7aSBamvor Jian Zhang +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig 12023d6dee7aSBamvor Jian Zhang 12035a5da78bSShuah Khan# --------------------------------------------------------------------------- 12041da177e4SLinus Torvalds# Modules 12051da177e4SLinus Torvalds 12061da177e4SLinus Torvaldsifdef CONFIG_MODULES 12071da177e4SLinus Torvalds 12081da177e4SLinus Torvalds# By default, build modules as well 12091da177e4SLinus Torvalds 121073d1393eSMichal Marekall: modules 12111da177e4SLinus Torvalds 12121da177e4SLinus Torvalds# Build modules 1213551559e1STejun Heo# 1214551559e1STejun Heo# A module can be listed more than once in obj-m resulting in 1215551559e1STejun Heo# duplicate lines in modules.order files. Those are removed 1216551559e1STejun Heo# using awk while concatenating to the final file. 12171da177e4SLinus Torvalds 12184f193362SPaul SmithPHONY += modules 12192da30e70SMichal Marekmodules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin 1220551559e1STejun Heo $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1221fd54f502SMike Frysinger @$(kecho) ' Building modules, stage 2.'; 1222b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 12231da177e4SLinus Torvalds 1224a6c36632SMichal Marekmodules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1225a6c36632SMichal Marek $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1226a6c36632SMichal Marek 12272063945fSMasahiro Yamada%/modules.builtin: include/config/auto.conf include/config/tristate.conf 1228a6c36632SMichal Marek $(Q)$(MAKE) $(modbuiltin)=$* 1229a6c36632SMichal Marek 12301da177e4SLinus Torvalds 12311da177e4SLinus Torvalds# Target to prepare building external modules 12324f193362SPaul SmithPHONY += modules_prepare 12335bb78269SSam Ravnborgmodules_prepare: prepare scripts 12341da177e4SLinus Torvalds 12351da177e4SLinus Torvalds# Target to install modules 12364f193362SPaul SmithPHONY += modules_install 12371da177e4SLinus Torvaldsmodules_install: _modinst_ _modinst_post 12381da177e4SLinus Torvalds 12394f193362SPaul SmithPHONY += _modinst_ 12402da30e70SMichal Marek_modinst_: 12411da177e4SLinus Torvalds @rm -rf $(MODLIB)/kernel 12421da177e4SLinus Torvalds @rm -f $(MODLIB)/source 12431da177e4SLinus Torvalds @mkdir -p $(MODLIB)/kernel 12448e9b4667SMasahiro Yamada @ln -s $(abspath $(srctree)) $(MODLIB)/source 12451da177e4SLinus Torvalds @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 12461da177e4SLinus Torvalds rm -f $(MODLIB)/build ; \ 12477e1c0477SMichal Marek ln -s $(CURDIR) $(MODLIB)/build ; \ 12481da177e4SLinus Torvalds fi 1249551559e1STejun Heo @cp -f $(objtree)/modules.order $(MODLIB)/ 1250bc081dd6SMichal Marek @cp -f $(objtree)/modules.builtin $(MODLIB)/ 1251b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 12521da177e4SLinus Torvalds 125350a8ec31SSam Ravnborg# This depmod is only for convenience to give the initial 12541da177e4SLinus Torvalds# boot a modules.dep even before / is mounted read-write. However the 12551da177e4SLinus Torvalds# boot script depmod is the master version. 12564f193362SPaul SmithPHONY += _modinst_post 12576d128e1eSLinus Torvalds_modinst_post: _modinst_ 125850a8ec31SSam Ravnborg $(call cmd,depmod) 12591da177e4SLinus Torvalds 1260d890f510SJosh Boyerifeq ($(CONFIG_MODULE_SIG), y) 1261d890f510SJosh BoyerPHONY += modules_sign 1262d890f510SJosh Boyermodules_sign: 1263d890f510SJosh Boyer $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign 1264d890f510SJosh Boyerendif 1265d890f510SJosh Boyer 12661da177e4SLinus Torvaldselse # CONFIG_MODULES 12671da177e4SLinus Torvalds 12681da177e4SLinus Torvalds# Modules not configured 12691da177e4SLinus Torvalds# --------------------------------------------------------------------------- 12701da177e4SLinus Torvalds 1271612e47ceSMasahiro YamadaPHONY += modules modules_install 1272612e47ceSMasahiro Yamadamodules modules_install: 12735369f550SMichal Marek @echo >&2 12745369f550SMichal Marek @echo >&2 "The present kernel configuration has modules disabled." 12755369f550SMichal Marek @echo >&2 "Type 'make config' and enable loadable module support." 12765369f550SMichal Marek @echo >&2 "Then build a kernel with module support enabled." 12775369f550SMichal Marek @echo >&2 12781da177e4SLinus Torvalds @exit 1 12791da177e4SLinus Torvalds 12801da177e4SLinus Torvaldsendif # CONFIG_MODULES 12811da177e4SLinus Torvalds 12821da177e4SLinus Torvalds### 12831da177e4SLinus Torvalds# Cleaning is done on three levels. 12841da177e4SLinus Torvalds# make clean Delete most generated files 12851da177e4SLinus Torvalds# Leave enough to build external modules 12861da177e4SLinus Torvalds# make mrproper Delete the current configuration, and all generated files 12871da177e4SLinus Torvalds# make distclean Remove editor backup files, patch leftover files and the like 12881da177e4SLinus Torvalds 12891da177e4SLinus Torvalds# Directories & files removed with 'make clean' 1290fbfa9be9SMasahiro YamadaCLEAN_DIRS += $(MODVERDIR) include/ksym 12911da177e4SLinus Torvalds 12921da177e4SLinus Torvalds# Directories & files removed with 'make mrproper' 1293d8ecc5cdSSam RavnborgMRPROPER_DIRS += include/config usr/include include/generated \ 129479192ca8SJason Cooper arch/*/include/generated .tmp_objdiff 1295278ae604SMasahiro YamadaMRPROPER_FILES += .config .config.old .version \ 1296d5b71936SRusty Russell Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ 1297fb117949SDavid Woodhouse signing_key.pem signing_key.priv signing_key.x509 \ 1298fb117949SDavid Woodhouse x509.genkey extra_certificates signing_key.x509.keyid \ 12993ee7b3faSJan Kiszka signing_key.x509.signer vmlinux-gdb.py 13001da177e4SLinus Torvalds 13011da177e4SLinus Torvalds# clean - Delete most, but leave enough to build external modules 13021da177e4SLinus Torvalds# 13031da177e4SLinus Torvaldsclean: rm-dirs := $(CLEAN_DIRS) 13041da177e4SLinus Torvaldsclean: rm-files := $(CLEAN_FILES) 1305fb68d4beSGerard Snitselaarclean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) 13061da177e4SLinus Torvalds 1307bd1ee804SPawel MollPHONY += $(clean-dirs) clean archclean vmlinuxclean 13081da177e4SLinus Torvalds$(clean-dirs): 13091da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 13101da177e4SLinus Torvalds 1311bd1ee804SPawel Mollvmlinuxclean: 1312bd1ee804SPawel Moll $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean 1313fbe6e37dSNicholas Piggin $(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean) 1314bd1ee804SPawel Moll 1315bd1ee804SPawel Mollclean: archclean vmlinuxclean 13161da177e4SLinus Torvalds 13171da177e4SLinus Torvalds# mrproper - Delete all generated files, including .config 13181da177e4SLinus Torvalds# 13191da177e4SLinus Torvaldsmrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 13201da177e4SLinus Torvaldsmrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1321cb43fb57SMauro Carvalho Chehabmrproper-dirs := $(addprefix _mrproper_,scripts) 13221da177e4SLinus Torvalds 13234f193362SPaul SmithPHONY += $(mrproper-dirs) mrproper archmrproper 13241da177e4SLinus Torvalds$(mrproper-dirs): 13251da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 13261da177e4SLinus Torvalds 13271da177e4SLinus Torvaldsmrproper: clean archmrproper $(mrproper-dirs) 13281da177e4SLinus Torvalds $(call cmd,rmdirs) 13291da177e4SLinus Torvalds $(call cmd,rmfiles) 13301da177e4SLinus Torvalds 13311da177e4SLinus Torvalds# distclean 13321da177e4SLinus Torvalds# 13334f193362SPaul SmithPHONY += distclean 13341da177e4SLinus Torvalds 13351da177e4SLinus Torvaldsdistclean: mrproper 13361da177e4SLinus Torvalds @find $(srctree) $(RCS_FIND_IGNORE) \ 13371da177e4SLinus Torvalds \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1338f78271dfSMasahiro Yamada -o -name '*.bak' -o -name '#*#' -o -name '*%' \ 1339f78271dfSMasahiro Yamada -o -name 'core' \) \ 13401da177e4SLinus Torvalds -type f -print | xargs rm -f 13411da177e4SLinus Torvalds 13421da177e4SLinus Torvalds 13431da177e4SLinus Torvalds# Packaging of the kernel to various formats 13441da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1345c79624c1SMichal Marekpackage-dir := scripts/package 13461da177e4SLinus Torvalds 1347bafb6747SArnaldo Carvalho de Melo%src-pkg: FORCE 1348bafb6747SArnaldo Carvalho de Melo $(Q)$(MAKE) $(build)=$(package-dir) $@ 1349031ecc6dSZach Brown%pkg: include/config/kernel.release FORCE 13506c2133e1SSam Ravnborg $(Q)$(MAKE) $(build)=$(package-dir) $@ 13511da177e4SLinus Torvalds 13521da177e4SLinus Torvalds 13531da177e4SLinus Torvalds# Brief documentation of the typical targets used 13541da177e4SLinus Torvalds# --------------------------------------------------------------------------- 13551da177e4SLinus Torvalds 13565dffbe81SSegher Boessenkoolboards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1357a1e7b7bbSKonstantin Khlebnikovboards := $(sort $(notdir $(boards))) 13585dffbe81SSegher Boessenkoolboard-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 13595dffbe81SSegher Boessenkoolboard-dirs := $(sort $(notdir $(board-dirs:/=))) 13601da177e4SLinus Torvalds 1361fe69b420SMasahiro YamadaPHONY += help 13621da177e4SLinus Torvaldshelp: 13631da177e4SLinus Torvalds @echo 'Cleaning targets:' 13645ea084efSSamuel Tardieu @echo ' clean - Remove most generated files but keep the config and' 13655cc8d246SJesper Juhl @echo ' enough build support to build external modules' 13665ea084efSSamuel Tardieu @echo ' mrproper - Remove all generated files + config + various backup files' 13675cc8d246SJesper Juhl @echo ' distclean - mrproper + remove editor backup and patch files' 13681da177e4SLinus Torvalds @echo '' 13691da177e4SLinus Torvalds @echo 'Configuration targets:' 13701da177e4SLinus Torvalds @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 13711da177e4SLinus Torvalds @echo '' 13721da177e4SLinus Torvalds @echo 'Other generic targets:' 13731da177e4SLinus Torvalds @echo ' all - Build all targets marked with [*]' 13741da177e4SLinus Torvalds @echo '* vmlinux - Build the bare kernel' 13751da177e4SLinus Torvalds @echo '* modules - Build all modules' 13769cc5d74cSBodo Eggert @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 13771da177e4SLinus Torvalds @echo ' dir/ - Build all files in dir and below' 137840ab87a4SWang YanQing @echo ' dir/file.[ois] - Build specified target only' 1379433db3e2SVinícius Tinti @echo ' dir/file.ll - Build the LLVM assembly file' 1380433db3e2SVinícius Tinti @echo ' (requires compiler support for LLVM assembly generation)' 138162718979SJoe Perches @echo ' dir/file.lst - Build specified mixed source/assembly target only' 138262718979SJoe Perches @echo ' (requires a recent binutils and recent build (System.map))' 1383155ad605SSam Ravnborg @echo ' dir/file.ko - Build module including final link' 1384c4d5ee67SRobert P. J. Day @echo ' modules_prepare - Set up for building external modules' 13851da177e4SLinus Torvalds @echo ' tags/TAGS - Generate tags file for editors' 13861da177e4SLinus Torvalds @echo ' cscope - Generate cscope index' 1387f4ed1009SJianbin Kang @echo ' gtags - Generate GNU GLOBAL index' 13883f1d9a6cSMichal Marek @echo ' kernelrelease - Output the release version string (use with make -s)' 13893f1d9a6cSMichal Marek @echo ' kernelversion - Output the version stored in Makefile (use with make -s)' 13903f1d9a6cSMichal Marek @echo ' image_name - Output the image name (use with make -s)' 13912fb9b1bdSSam Ravnborg @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 139259df3230SGeert Uytterhoeven echo ' (default: $(INSTALL_HDR_PATH))'; \ 13932fb9b1bdSSam Ravnborg echo '' 139431b8cc80SRandy Dunlap @echo 'Static analysers:' 13951da177e4SLinus Torvalds @echo ' checkstack - Generate a list of stack hogs' 13961da177e4SLinus Torvalds @echo ' namespacecheck - Name space analysis on compiled kernel' 1397aa025e7dSSam Ravnborg @echo ' versioncheck - Sanity check on version.h usage' 1398ec2d987fSRandy Dunlap @echo ' includecheck - Check for duplicate included header files' 1399295ac051SAdrian Bunk @echo ' export_report - List the usages of all exported symbols' 1400179efcb4SVegard Nossum @echo ' headers_check - Sanity check on exported headers' 140174425eeeSNicolas Palix @echo ' headerdep - Detect inclusion cycles in headers' 14027f855fc8SMasahiro Yamada @echo ' coccicheck - Check with Coccinelle' 140374425eeeSNicolas Palix @echo '' 140431b8cc80SRandy Dunlap @echo 'Kernel selftest:' 14055a5da78bSShuah Khan @echo ' kselftest - Build and run kernel selftest (run as root)' 14065a5da78bSShuah Khan @echo ' Build, install, and boot kernel before' 14075a5da78bSShuah Khan @echo ' running kselftest on it' 1408dcb825a9SWang Long @echo ' kselftest-clean - Remove all generated kselftest files' 1409bbfe63b6SRandy Dunlap @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existing' 14103d6dee7aSBamvor Jian Zhang @echo ' .config.' 14115a5da78bSShuah Khan @echo '' 141231b8cc80SRandy Dunlap @echo 'Userspace tools targets:' 141331b8cc80SRandy Dunlap @echo ' use "make tools/help"' 141431b8cc80SRandy Dunlap @echo ' or "cd tools; make help"' 141531b8cc80SRandy Dunlap @echo '' 14161da177e4SLinus Torvalds @echo 'Kernel packaging:' 14176c2133e1SSam Ravnborg @$(MAKE) $(build)=$(package-dir) help 14181da177e4SLinus Torvalds @echo '' 14191da177e4SLinus Torvalds @echo 'Documentation targets:' 1420cb43fb57SMauro Carvalho Chehab @$(MAKE) -f $(srctree)/Documentation/Makefile dochelp 14211da177e4SLinus Torvalds @echo '' 142201dee188SAndres Salomon @echo 'Architecture specific targets ($(SRCARCH)):' 14231da177e4SLinus Torvalds @$(if $(archhelp),$(archhelp),\ 142401dee188SAndres Salomon echo ' No architecture specific help defined for $(SRCARCH)') 14251da177e4SLinus Torvalds @echo '' 14261da177e4SLinus Torvalds @$(if $(boards), \ 14271da177e4SLinus Torvalds $(foreach b, $(boards), \ 14281da177e4SLinus Torvalds printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 14291da177e4SLinus Torvalds echo '') 14305dffbe81SSegher Boessenkool @$(if $(board-dirs), \ 14315dffbe81SSegher Boessenkool $(foreach b, $(board-dirs), \ 14325dffbe81SSegher Boessenkool printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 14335dffbe81SSegher Boessenkool printf " %-16s - Show all of the above\\n" help-boards; \ 14345dffbe81SSegher Boessenkool echo '') 14351da177e4SLinus Torvalds 14361da177e4SLinus Torvalds @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 143745d506bdSSam Ravnborg @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 14381da177e4SLinus Torvalds @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 14399ba26a72SCao jin @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)' 1440701842e3SDustin Kirkland @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1441af07ce3eSIngo Molnar @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 144228bc20dcSSam Ravnborg @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 144328bc20dcSSam Ravnborg @echo ' 1: warnings which may be relevant and do not occur too often' 144428bc20dcSSam Ravnborg @echo ' 2: warnings which occur quite often but may still be relevant' 144528bc20dcSSam Ravnborg @echo ' 3: more obscure warnings, can most likely be ignored' 1446a6de553dSMichal Marek @echo ' Multiple levels can be combined with W=12 or W=123' 14471da177e4SLinus Torvalds @echo '' 14481da177e4SLinus Torvalds @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 14491da177e4SLinus Torvalds @echo 'For further info see the ./README file' 14501da177e4SLinus Torvalds 14511da177e4SLinus Torvalds 14525dffbe81SSegher Boessenkoolhelp-board-dirs := $(addprefix help-,$(board-dirs)) 14535dffbe81SSegher Boessenkool 14545dffbe81SSegher Boessenkoolhelp-boards: $(help-board-dirs) 14555dffbe81SSegher Boessenkool 1456fbae4d58SMichal Marekboards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))) 14575dffbe81SSegher Boessenkool 14585dffbe81SSegher Boessenkool$(help-board-dirs): help-%: 14595dffbe81SSegher Boessenkool @echo 'Architecture specific targets ($(SRCARCH) $*):' 14605dffbe81SSegher Boessenkool @$(if $(boards-per-dir), \ 14615dffbe81SSegher Boessenkool $(foreach b, $(boards-per-dir), \ 14625dffbe81SSegher Boessenkool printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 14635dffbe81SSegher Boessenkool echo '') 14645dffbe81SSegher Boessenkool 14655dffbe81SSegher Boessenkool 14661da177e4SLinus Torvalds# Documentation targets 14671da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1468e8939222SJani NikulaDOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs \ 1469e8939222SJani Nikula linkcheckdocs dochelp refcheckdocs 147022cba31bSJani NikulaPHONY += $(DOC_TARGETS) 147122cba31bSJani Nikula$(DOC_TARGETS): scripts_basic FORCE 1472cb43fb57SMauro Carvalho Chehab $(Q)$(MAKE) $(build)=Documentation $@ 14731da177e4SLinus Torvalds 14741da177e4SLinus Torvaldselse # KBUILD_EXTMOD 14751da177e4SLinus Torvalds 14761da177e4SLinus Torvalds### 14771da177e4SLinus Torvalds# External module support. 14781da177e4SLinus Torvalds# When building external modules the kernel used as basis is considered 14791da177e4SLinus Torvalds# read-only, and no consistency checks are made and the make 14801da177e4SLinus Torvalds# system is not used on the basis kernel. If updates are required 14811da177e4SLinus Torvalds# in the basis kernel ordinary make commands (without M=...) must 14821da177e4SLinus Torvalds# be used. 14831da177e4SLinus Torvalds# 14841da177e4SLinus Torvalds# The following are the only valid targets when building external 14851da177e4SLinus Torvalds# modules. 14861da177e4SLinus Torvalds# make M=dir clean Delete all automatically generated files 14871da177e4SLinus Torvalds# make M=dir modules Make all modules in specified dir 14881da177e4SLinus Torvalds# make M=dir Same as 'make M=dir modules' 14891da177e4SLinus Torvalds# make M=dir modules_install 1490070b98bfSSam Ravnborg# Install the modules built in the module directory 14911da177e4SLinus Torvalds# Assumes install directory is already created 14921da177e4SLinus Torvalds 14931da177e4SLinus Torvalds# We are always building modules 14941da177e4SLinus TorvaldsKBUILD_MODULES := 1 14954f193362SPaul SmithPHONY += crmodverdir 14961da177e4SLinus Torvaldscrmodverdir: 14977bb9d092SSam Ravnborg $(cmd_crmodverdir) 14981da177e4SLinus Torvalds 14994f193362SPaul SmithPHONY += $(objtree)/Module.symvers 15001da177e4SLinus Torvalds$(objtree)/Module.symvers: 15011da177e4SLinus Torvalds @test -e $(objtree)/Module.symvers || ( \ 15021da177e4SLinus Torvalds echo; \ 15031da177e4SLinus Torvalds echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 15041da177e4SLinus Torvalds echo " is missing; modules will have no dependencies and modversions."; \ 15051da177e4SLinus Torvalds echo ) 15061da177e4SLinus Torvalds 15071da177e4SLinus Torvaldsmodule-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 15084f193362SPaul SmithPHONY += $(module-dirs) modules 15091da177e4SLinus Torvalds$(module-dirs): crmodverdir $(objtree)/Module.symvers 15101da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 15111da177e4SLinus Torvalds 15121da177e4SLinus Torvaldsmodules: $(module-dirs) 1513fd54f502SMike Frysinger @$(kecho) ' Building modules, stage 2.'; 1514b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 15151da177e4SLinus Torvalds 15164f193362SPaul SmithPHONY += modules_install 1517a67dc21aSSam Ravnborgmodules_install: _emodinst_ _emodinst_post 1518a67dc21aSSam Ravnborg 1519a67dc21aSSam Ravnborginstall-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 15204f193362SPaul SmithPHONY += _emodinst_ 1521a67dc21aSSam Ravnborg_emodinst_: 1522a67dc21aSSam Ravnborg $(Q)mkdir -p $(MODLIB)/$(install-dir) 1523b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 15241da177e4SLinus Torvalds 15254f193362SPaul SmithPHONY += _emodinst_post 1526a67dc21aSSam Ravnborg_emodinst_post: _emodinst_ 1527a67dc21aSSam Ravnborg $(call cmd,depmod) 1528a67dc21aSSam Ravnborg 15291da177e4SLinus Torvaldsclean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 15301da177e4SLinus Torvalds 15314f193362SPaul SmithPHONY += $(clean-dirs) clean 15321da177e4SLinus Torvalds$(clean-dirs): 15331da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 15341da177e4SLinus Torvalds 15351da177e4SLinus Torvaldsclean: rm-dirs := $(MODVERDIR) 153688d7be03SMichal Marekclean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 15371da177e4SLinus Torvalds 1538fe69b420SMasahiro YamadaPHONY += help 15391da177e4SLinus Torvaldshelp: 15401da177e4SLinus Torvalds @echo ' Building external modules.' 15411da177e4SLinus Torvalds @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 15421da177e4SLinus Torvalds @echo '' 15431da177e4SLinus Torvalds @echo ' modules - default target, build the module(s)' 15441da177e4SLinus Torvalds @echo ' modules_install - install the module' 15451da177e4SLinus Torvalds @echo ' clean - remove generated files in module directory only' 15461da177e4SLinus Torvalds @echo '' 154706300b21SSam Ravnborg 154806300b21SSam Ravnborg# Dummies... 15494f193362SPaul SmithPHONY += prepare scripts 155006300b21SSam Ravnborgprepare: ; 155106300b21SSam Ravnborgscripts: ; 15521da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 15531da177e4SLinus Torvalds 155488d7be03SMichal Marekclean: $(clean-dirs) 155588d7be03SMichal Marek $(call cmd,rmdirs) 155688d7be03SMichal Marek $(call cmd,rmfiles) 155743f67c98SKevin Cernekee @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1558ef46d9b3SMasahiro Yamada \( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \ 155974ce1896SMasahiro Yamada -o -name '*.ko.*' -o -name '*.dtb' -o -name '*.dtb.S' \ 1560ef46d9b3SMasahiro Yamada -o -name '*.dwo' -o -name '*.lst' \ 1561d523b255SRasmus Villemoes -o -name '*.su' \ 156288d7be03SMichal Marek -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 15639a8dfb39SMasahiro Yamada -o -name '*.lex.c' -o -name '*.tab.[ch]' \ 15644fa8bc94SMasahiro Yamada -o -name '*.asn1.[ch]' \ 156588d7be03SMichal Marek -o -name '*.symtypes' -o -name 'modules.order' \ 156688d7be03SMichal Marek -o -name modules.builtin -o -name '.tmp_*.o.*' \ 15676b90bd4bSEmese Revfy -o -name '*.c.[012]*.*' \ 1568433db3e2SVinícius Tinti -o -name '*.ll' \ 156988d7be03SMichal Marek -o -name '*.gcno' \) -type f -print | xargs rm -f 157088d7be03SMichal Marek 15711da177e4SLinus Torvalds# Generate tags for editors 15721da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1573a680eedcSSam Ravnborgquiet_cmd_tags = GEN $@ 1574a680eedcSSam Ravnborg cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 15751da177e4SLinus Torvalds 1576f4ed1009SJianbin Kangtags TAGS cscope gtags: FORCE 15771da177e4SLinus Torvalds $(call cmd,tags) 15781da177e4SLinus Torvalds 15791da177e4SLinus Torvalds# Scripts to check various things for consistency 15801da177e4SLinus Torvalds# --------------------------------------------------------------------------- 15811da177e4SLinus Torvalds 1582279f3dd3SPeter FoleyPHONY += includecheck versioncheck coccicheck namespacecheck export_report 1583279f3dd3SPeter Foley 15841da177e4SLinus Torvaldsincludecheck: 1585436f876cSPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 15861da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 158780007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 15881da177e4SLinus Torvalds 15891da177e4SLinus Torvaldsversioncheck: 15902ee2d292SPeter Foley find $(srctree)/* $(RCS_FIND_IGNORE) \ 15911da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 159280007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 15931da177e4SLinus Torvalds 159474425eeeSNicolas Palixcoccicheck: 159574425eeeSNicolas Palix $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 159674425eeeSNicolas Palix 15971da177e4SLinus Torvaldsnamespacecheck: 15981da177e4SLinus Torvalds $(PERL) $(srctree)/scripts/namespace.pl 15991da177e4SLinus Torvalds 1600295ac051SAdrian Bunkexport_report: 1601295ac051SAdrian Bunk $(PERL) $(srctree)/scripts/export_report.pl 1602295ac051SAdrian Bunk 16031da177e4SLinus Torvaldsendif #ifeq ($(config-targets),1) 16041da177e4SLinus Torvaldsendif #ifeq ($(mixed-targets),1) 16051da177e4SLinus Torvalds 1606c398ff00SMike MarciniszynPHONY += checkstack kernelrelease kernelversion image_name 1607e3ccf6e3SJeff Dike 1608011e3a9aSJeff Dike# UML needs a little special treatment here. It wants to use the host 1609011e3a9aSJeff Dike# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1610011e3a9aSJeff Dike# else wants $(ARCH), including people doing cross-builds, which means 1611011e3a9aSJeff Dike# that $(SUBARCH) doesn't work here. 1612011e3a9aSJeff Dikeifeq ($(ARCH), um) 1613011e3a9aSJeff DikeCHECKSTACK_ARCH := $(SUBARCH) 1614011e3a9aSJeff Dikeelse 1615011e3a9aSJeff DikeCHECKSTACK_ARCH := $(ARCH) 1616011e3a9aSJeff Dikeendif 16171da177e4SLinus Torvaldscheckstack: 16181da177e4SLinus Torvalds $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1619011e3a9aSJeff Dike $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 16201da177e4SLinus Torvalds 16217b8ea53dSAmerigo Wangkernelrelease: 16227b8ea53dSAmerigo Wang @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 162301ab1788SAmerigo Wang 1624cb58455cSSam Ravnborgkernelversion: 16252244cbd8SSam Ravnborg @echo $(KERNELVERSION) 16261da177e4SLinus Torvalds 1627c398ff00SMike Marciniszynimage_name: 1628c398ff00SMike Marciniszyn @echo $(KBUILD_IMAGE) 1629c398ff00SMike Marciniszyn 1630ea01fa9fSBorislav Petkov# Clear a bunch of variables before executing the submake 1631ea01fa9fSBorislav Petkovtools/: FORCE 1632bf35182fSDavid Howells $(Q)mkdir -p $(objtree)/tools 16338e9b4667SMasahiro Yamada $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/ 1634ea01fa9fSBorislav Petkov 1635ea01fa9fSBorislav Petkovtools/%: FORCE 1636bf35182fSDavid Howells $(Q)mkdir -p $(objtree)/tools 16378e9b4667SMasahiro Yamada $(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/ $* 1638ea01fa9fSBorislav Petkov 163906300b21SSam Ravnborg# Single targets 164006300b21SSam Ravnborg# --------------------------------------------------------------------------- 1641bc2546a6SSam Ravnborg# Single targets are compatible with: 1642e1b8513dSRobert P. J. Day# - build with mixed source and output 1643bc2546a6SSam Ravnborg# - build with separate output dir 'make O=...' 1644bc2546a6SSam Ravnborg# - external modules 1645bc2546a6SSam Ravnborg# 1646bc2546a6SSam Ravnborg# target-dir => where to store outputfile 1647bc2546a6SSam Ravnborg# build-dir => directory in kernel source tree to use 164806300b21SSam Ravnborg 164906300b21SSam Ravnborgifeq ($(KBUILD_EXTMOD),) 1650aa360879SSam Ravnborg build-dir = $(patsubst %/,%,$(dir $@)) 1651bc2546a6SSam Ravnborg target-dir = $(dir $@) 165206300b21SSam Ravnborgelse 165306300b21SSam Ravnborg zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1654bc2546a6SSam Ravnborg build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1655bc2546a6SSam Ravnborg target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 165606300b21SSam Ravnborgendif 165706300b21SSam Ravnborg 1658bc2546a6SSam Ravnborg%.s: %.c prepare scripts FORCE 1659bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1660bc2546a6SSam Ravnborg%.i: %.c prepare scripts FORCE 1661bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1662bc2546a6SSam Ravnborg%.o: %.c prepare scripts FORCE 1663bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1664bc2546a6SSam Ravnborg%.lst: %.c prepare scripts FORCE 1665bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1666bc2546a6SSam Ravnborg%.s: %.S prepare scripts FORCE 1667bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1668bc2546a6SSam Ravnborg%.o: %.S prepare scripts FORCE 1669bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 167015fde675SAndreas Gruenbacher%.symtypes: %.c prepare scripts FORCE 167115fde675SAndreas Gruenbacher $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1672433db3e2SVinícius Tinti%.ll: %.c prepare scripts FORCE 1673433db3e2SVinícius Tinti $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1674bc2546a6SSam Ravnborg 1675bc2546a6SSam Ravnborg# Modules 167631110ebbSSam Ravnborg/: prepare scripts FORCE 167731110ebbSSam Ravnborg $(cmd_crmodverdir) 167831110ebbSSam Ravnborg $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 167931110ebbSSam Ravnborg $(build)=$(build-dir) 16808e2faea8SPeter Foley# Make sure the latest headers are built for Documentation 1681ddea05faSArnd BergmannDocumentation/ samples/: headers_install 168231110ebbSSam Ravnborg%/: prepare scripts FORCE 16837bb9d092SSam Ravnborg $(cmd_crmodverdir) 168406300b21SSam Ravnborg $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1685bc2546a6SSam Ravnborg $(build)=$(build-dir) 1686bc2546a6SSam Ravnborg%.ko: prepare scripts FORCE 16877bb9d092SSam Ravnborg $(cmd_crmodverdir) 168806300b21SSam Ravnborg $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1689bc2546a6SSam Ravnborg $(build)=$(build-dir) $(@:.ko=.o) 1690b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 169106300b21SSam Ravnborg 16921da177e4SLinus Torvalds# FIXME Should go into a make.lib or something 16931da177e4SLinus Torvalds# =========================================================================== 16941da177e4SLinus Torvalds 16951da177e4SLinus Torvaldsquiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 16961da177e4SLinus Torvalds cmd_rmdirs = rm -rf $(rm-dirs) 16971da177e4SLinus Torvalds 16981da177e4SLinus Torvaldsquiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 16991da177e4SLinus Torvalds cmd_rmfiles = rm -f $(rm-files) 17001da177e4SLinus Torvalds 1701bc3c26feSUwe Kleine-König# Run depmod only if we have System.map and depmod is executable 170250a8ec31SSam Ravnborgquiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1703569658ddSMichal Marek cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 17045a144a1aSMasahiro Yamada $(KERNELRELEASE) 170550a8ec31SSam Ravnborg 17067bb9d092SSam Ravnborg# Create temporary dir for module support files 1707ab19f879SSam Ravnborg# clean it up only when building all modules 1708ab19f879SSam Ravnborgcmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1709ab19f879SSam Ravnborg $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 17101da177e4SLinus Torvalds 17111da177e4SLinus Torvalds# read all saved command lines 17121da177e4SLinus Torvalds 17132982c953SMasahiro Yamadacmd_files := $(wildcard .*.cmd $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd)) 17141da177e4SLinus Torvalds 17151da177e4SLinus Torvaldsifneq ($(cmd_files),) 17161da177e4SLinus Torvalds $(cmd_files): ; # Do not try to update included dependency files 17171da177e4SLinus Torvalds include $(cmd_files) 17181da177e4SLinus Torvaldsendif 17191da177e4SLinus Torvalds 17201da177e4SLinus Torvaldsendif # skip-makefile 17211da177e4SLinus Torvalds 17224f193362SPaul SmithPHONY += FORCE 17231da177e4SLinus TorvaldsFORCE: 17244f193362SPaul Smith 1725bd412d81SUlf Magnusson# Declare the contents of the PHONY variable as phony. We keep that 1726fe8d0a41SKirill Smelkov# information in a variable so we can use it in if_changed and friends. 17274f193362SPaul Smith.PHONY: $(PHONY) 1728