11da177e4SLinus TorvaldsVERSION = 2 21da177e4SLinus TorvaldsPATCHLEVEL = 6 30ce790e7SLinus TorvaldsSUBLEVEL = 39 48e10cd74SLinus TorvaldsEXTRAVERSION = -rc5 5cd07202cSLinus TorvaldsNAME = Flesh-Eating Bats with Fangs 61da177e4SLinus Torvalds 71da177e4SLinus Torvalds# *DOCUMENTATION* 81da177e4SLinus Torvalds# To see a list of typical targets execute "make help" 91da177e4SLinus Torvalds# More info can be located in ./README 101da177e4SLinus Torvalds# Comments in this file are targeted only to the developer, do not 111da177e4SLinus Torvalds# expect to learn how to build the kernel reading this file. 121da177e4SLinus Torvalds 1315964864SOleg Verych# Do not: 1415964864SOleg Verych# o use make's built-in rules and variables 15d384e35aSLinus Nilsson# (this increases performance and avoids hard-to-debug behaviour); 1615964864SOleg Verych# o print "Entering directory ..."; 1715964864SOleg VerychMAKEFLAGS += -rR --no-print-directory 181da177e4SLinus Torvalds 19c051346bSH. Peter Anvin# Avoid funny character set dependencies 2006b5dc64SH. Peter Anvinunexport LC_ALL 21c051346bSH. Peter AnvinLC_COLLATE=C 22c051346bSH. Peter AnvinLC_NUMERIC=C 2307105202SMichal Marekexport LC_COLLATE LC_NUMERIC 24c051346bSH. Peter Anvin 251da177e4SLinus Torvalds# We are using a recursive build, so we need to do a little thinking 261da177e4SLinus Torvalds# to get the ordering right. 271da177e4SLinus Torvalds# 281da177e4SLinus Torvalds# Most importantly: sub-Makefiles should only ever modify files in 291da177e4SLinus Torvalds# their own directory. If in some directory we have a dependency on 301da177e4SLinus Torvalds# a file in another dir (which doesn't happen often, but it's often 311da177e4SLinus Torvalds# unavoidable when linking the built-in.o targets which finally 321da177e4SLinus Torvalds# turn into vmlinux), we will call a sub make in that other dir, and 331da177e4SLinus Torvalds# after that we are sure that everything which is in that other dir 341da177e4SLinus Torvalds# is now up to date. 351da177e4SLinus Torvalds# 361da177e4SLinus Torvalds# The only cases where we need to modify files which have global 371da177e4SLinus Torvalds# effects are thus separated out and done before the recursive 381da177e4SLinus Torvalds# descending is started. They are now explicitly listed as the 391da177e4SLinus Torvalds# prepare rule. 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds# To put more focus on warnings, be less verbose as default 421da177e4SLinus Torvalds# Use 'make V=1' to see the full commands 431da177e4SLinus Torvalds 441da177e4SLinus Torvaldsifeq ("$(origin V)", "command line") 451da177e4SLinus Torvalds KBUILD_VERBOSE = $(V) 461da177e4SLinus Torvaldsendif 471da177e4SLinus Torvaldsifndef KBUILD_VERBOSE 481da177e4SLinus Torvalds KBUILD_VERBOSE = 0 491da177e4SLinus Torvaldsendif 501da177e4SLinus Torvalds 511c7bafe7SRobert P. J. Day# Call a source code checker (by default, "sparse") as part of the 521c7bafe7SRobert P. J. Day# C compilation. 531c7bafe7SRobert P. J. Day# 541c7bafe7SRobert P. J. Day# Use 'make C=1' to enable checking of only re-compiled files. 551c7bafe7SRobert P. J. Day# Use 'make C=2' to enable checking of *all* source files, regardless 561c7bafe7SRobert P. J. Day# of whether they are re-compiled or not. 571c7bafe7SRobert P. J. Day# 581c7bafe7SRobert P. J. Day# See the file "Documentation/sparse.txt" for more details, including 591c7bafe7SRobert P. J. Day# where to get the "sparse" utility. 601da177e4SLinus Torvalds 611da177e4SLinus Torvaldsifeq ("$(origin C)", "command line") 621da177e4SLinus Torvalds KBUILD_CHECKSRC = $(C) 631da177e4SLinus Torvaldsendif 641da177e4SLinus Torvaldsifndef KBUILD_CHECKSRC 651da177e4SLinus Torvalds KBUILD_CHECKSRC = 0 661da177e4SLinus Torvaldsendif 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds# Use make M=dir to specify directory of external module to build 691da177e4SLinus Torvalds# Old syntax make ... SUBDIRS=$PWD is still supported 701da177e4SLinus Torvalds# Setting the environment variable KBUILD_EXTMOD take precedence 711da177e4SLinus Torvaldsifdef SUBDIRS 721da177e4SLinus Torvalds KBUILD_EXTMOD ?= $(SUBDIRS) 731da177e4SLinus Torvaldsendif 74b8b0618cSCheng Renquan 751da177e4SLinus Torvaldsifeq ("$(origin M)", "command line") 761da177e4SLinus Torvalds KBUILD_EXTMOD := $(M) 771da177e4SLinus Torvaldsendif 781da177e4SLinus Torvalds 791da177e4SLinus Torvalds# kbuild supports saving output files in a separate directory. 801da177e4SLinus Torvalds# To locate output files in a separate directory two syntaxes are supported. 811da177e4SLinus Torvalds# In both cases the working directory must be the root of the kernel src. 821da177e4SLinus Torvalds# 1) O= 831da177e4SLinus Torvalds# Use "make O=dir/to/store/output/files/" 841da177e4SLinus Torvalds# 851da177e4SLinus Torvalds# 2) Set KBUILD_OUTPUT 861da177e4SLinus Torvalds# Set the environment variable KBUILD_OUTPUT to point to the directory 871da177e4SLinus Torvalds# where the output files shall be placed. 881da177e4SLinus Torvalds# export KBUILD_OUTPUT=dir/to/store/output/files/ 891da177e4SLinus Torvalds# make 901da177e4SLinus Torvalds# 911da177e4SLinus Torvalds# The O= assignment takes precedence over the KBUILD_OUTPUT environment 921da177e4SLinus Torvalds# variable. 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds 951da177e4SLinus Torvalds# KBUILD_SRC is set on invocation of make in OBJ directory 961da177e4SLinus Torvalds# KBUILD_SRC is not intended to be used by the regular user (for now) 971da177e4SLinus Torvaldsifeq ($(KBUILD_SRC),) 981da177e4SLinus Torvalds 991da177e4SLinus Torvalds# OK, Make called in directory where kernel src resides 1001da177e4SLinus Torvalds# Do we want to locate output files in a separate directory? 1011da177e4SLinus Torvaldsifeq ("$(origin O)", "command line") 1021da177e4SLinus Torvalds KBUILD_OUTPUT := $(O) 1031da177e4SLinus Torvaldsendif 1041da177e4SLinus Torvalds 1054a5838adSBorislav Petkovifeq ("$(origin W)", "command line") 1064a5838adSBorislav Petkov export KBUILD_ENABLE_EXTRA_GCC_CHECKS := 1 1074a5838adSBorislav Petkovendif 1084a5838adSBorislav Petkov 1091da177e4SLinus Torvalds# That's our default target when none is given on the command line 1104f193362SPaul SmithPHONY := _all 1111da177e4SLinus Torvalds_all: 1121da177e4SLinus Torvalds 1131cacc9abSSam Ravnborg# Cancel implicit rules on top Makefile 1141cacc9abSSam Ravnborg$(CURDIR)/Makefile Makefile: ; 1151cacc9abSSam Ravnborg 1161da177e4SLinus Torvaldsifneq ($(KBUILD_OUTPUT),) 1171da177e4SLinus Torvalds# Invoke a second make in the output directory, passing relevant variables 1181da177e4SLinus Torvalds# check that the output directory actually exists 1191da177e4SLinus Torvaldssaved-output := $(KBUILD_OUTPUT) 1201da177e4SLinus TorvaldsKBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) 1211da177e4SLinus Torvalds$(if $(KBUILD_OUTPUT),, \ 1221da177e4SLinus Torvalds $(error output directory "$(saved-output)" does not exist)) 1231da177e4SLinus Torvalds 1240b35786dSMilton MillerPHONY += $(MAKECMDGOALS) sub-make 1250b35786dSMilton Miller 1261cacc9abSSam Ravnborg$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 1270b35786dSMilton Miller $(Q)@: 1280b35786dSMilton Miller 1290b35786dSMilton Millersub-make: FORCE 1301da177e4SLinus Torvalds $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ 13123a45e2cSSam Ravnborg KBUILD_SRC=$(CURDIR) \ 1320b35786dSMilton Miller KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ 1330b35786dSMilton Miller $(filter-out _all sub-make,$(MAKECMDGOALS)) 1341da177e4SLinus Torvalds 1351da177e4SLinus Torvalds# Leave processing to above invocation of make 1361da177e4SLinus Torvaldsskip-makefile := 1 1371da177e4SLinus Torvaldsendif # ifneq ($(KBUILD_OUTPUT),) 1381da177e4SLinus Torvaldsendif # ifeq ($(KBUILD_SRC),) 1391da177e4SLinus Torvalds 1401da177e4SLinus Torvalds# We process the rest of the Makefile if this is the final invocation of make 1411da177e4SLinus Torvaldsifeq ($(skip-makefile),) 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds# If building an external module we do not care about the all: rule 1441da177e4SLinus Torvalds# but instead _all depend on modules 1454f193362SPaul SmithPHONY += all 1461da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 1471da177e4SLinus Torvalds_all: all 1481da177e4SLinus Torvaldselse 1491da177e4SLinus Torvalds_all: modules 1501da177e4SLinus Torvaldsendif 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvaldssrctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) 1531da177e4SLinus Torvaldsobjtree := $(CURDIR) 1541da177e4SLinus Torvaldssrc := $(srctree) 1551da177e4SLinus Torvaldsobj := $(objtree) 1561da177e4SLinus Torvalds 1570f558c33SMattia DongiliVPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 1581da177e4SLinus Torvalds 15911294235SAmerigo Wangexport srctree objtree VPATH 1601da177e4SLinus Torvalds 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds# SUBARCH tells the usermode build what the underlying arch is. That is set 1631da177e4SLinus Torvalds# first, and if a usermode build is happening, the "ARCH=um" on the command 1641da177e4SLinus Torvalds# line overrides the setting of ARCH below. If a native build is happening, 1651da177e4SLinus Torvalds# then ARCH is assigned, getting whatever value it gets normally, and 1661da177e4SLinus Torvalds# SUBARCH is subsequently ignored. 1671da177e4SLinus Torvalds 1681da177e4SLinus TorvaldsSUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ 1691da177e4SLinus Torvalds -e s/arm.*/arm/ -e s/sa110/arm/ \ 17039990b5eSLinus Torvalds -e s/s390x/s390/ -e s/parisc64/parisc/ \ 171236b1957SPaul Mundt -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 1723cc000b5SPaul Mundt -e s/sh[234].*/sh/ ) 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds# Cross compiling and selecting different set of gcc/bin-utils 1751da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1761da177e4SLinus Torvalds# 1771da177e4SLinus Torvalds# When performing cross compilation for other architectures ARCH shall be set 1781da177e4SLinus Torvalds# to the target architecture. (See arch/* for the possibilities). 1791da177e4SLinus Torvalds# ARCH can be set during invocation of make: 1801da177e4SLinus Torvalds# make ARCH=ia64 1811da177e4SLinus Torvalds# Another way is to have ARCH set in the environment. 1821da177e4SLinus Torvalds# The default ARCH is the host where make is executed. 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds# CROSS_COMPILE specify the prefix used for all executables used 1851da177e4SLinus Torvalds# during compilation. Only gcc and related bin-utils executables 1861da177e4SLinus Torvalds# are prefixed with $(CROSS_COMPILE). 1871da177e4SLinus Torvalds# CROSS_COMPILE can be set on the command line 1881da177e4SLinus Torvalds# make CROSS_COMPILE=ia64-linux- 1891da177e4SLinus Torvalds# Alternatively CROSS_COMPILE can be set in the environment. 19084336466SRoland McGrath# A third alternative is to store a setting in .config so that plain 19184336466SRoland McGrath# "make" in the configured kernel build directory always uses that. 1921da177e4SLinus Torvalds# Default value for CROSS_COMPILE is not to prefix executables 1931da177e4SLinus Torvalds# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 1944ce6efedSSam Ravnborgexport KBUILD_BUILDHOST := $(SUBARCH) 1952331d1a6SSam RavnborgARCH ?= $(SUBARCH) 19684336466SRoland McGrathCROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) 1971da177e4SLinus Torvalds 1981da177e4SLinus Torvalds# Architecture as present in compile.h 1991da177e4SLinus TorvaldsUTS_MACHINE := $(ARCH) 2006752ed90SThomas GleixnerSRCARCH := $(ARCH) 2011da177e4SLinus Torvalds 202d746d647SSam Ravnborg# Additional ARCH settings for x86 203d746d647SSam Ravnborgifeq ($(ARCH),i386) 204d746d647SSam Ravnborg SRCARCH := x86 205d746d647SSam Ravnborgendif 206d746d647SSam Ravnborgifeq ($(ARCH),x86_64) 207d746d647SSam Ravnborg SRCARCH := x86 208d746d647SSam Ravnborgendif 20974b469f2SSam Ravnborg 2105e538790SSam Ravnborg# Additional ARCH settings for sparc 211e69f58c0SNamhyung Kimifeq ($(ARCH),sparc32) 212e69f58c0SNamhyung Kim SRCARCH := sparc 213e69f58c0SNamhyung Kimendif 214a439fe51SSam Ravnborgifeq ($(ARCH),sparc64) 2155e538790SSam Ravnborg SRCARCH := sparc 216a439fe51SSam Ravnborgendif 2172fb9b1bdSSam Ravnborg 2183cc000b5SPaul Mundt# Additional ARCH settings for sh 2193cc000b5SPaul Mundtifeq ($(ARCH),sh64) 2203cc000b5SPaul Mundt SRCARCH := sh 2213cc000b5SPaul Mundtendif 2223cc000b5SPaul Mundt 223*18aecc2bSChris Metcalf# Additional ARCH settings for tile 224*18aecc2bSChris Metcalfifeq ($(ARCH),tilegx) 225*18aecc2bSChris Metcalf SRCARCH := tile 226*18aecc2bSChris Metcalfendif 227*18aecc2bSChris Metcalf 2285e538790SSam Ravnborg# Where to locate arch specific headers 2295e538790SSam Ravnborghdr-arch := $(SRCARCH) 2305e538790SSam Ravnborg 23149148020SSam Ravnborgifeq ($(ARCH),m68knommu) 23249148020SSam Ravnborg hdr-arch := m68k 23349148020SSam Ravnborgendif 23449148020SSam Ravnborg 23514cdd3c4SRoman ZippelKCONFIG_CONFIG ?= .config 23641263fc6SBen Gardinerexport KCONFIG_CONFIG 23714cdd3c4SRoman Zippel 2381da177e4SLinus Torvalds# SHELL used by kbuild 2391da177e4SLinus TorvaldsCONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 2401da177e4SLinus Torvalds else if [ -x /bin/bash ]; then echo /bin/bash; \ 2411da177e4SLinus Torvalds else echo sh; fi ; fi) 2421da177e4SLinus Torvalds 2431da177e4SLinus TorvaldsHOSTCC = gcc 2441da177e4SLinus TorvaldsHOSTCXX = g++ 24525583d4bSJosh TriplettHOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer 2461da177e4SLinus TorvaldsHOSTCXXFLAGS = -O2 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds# Decide whether to build built-in, modular, or both. 2491da177e4SLinus Torvalds# Normally, just do built-in. 2501da177e4SLinus Torvalds 2511da177e4SLinus TorvaldsKBUILD_MODULES := 2521da177e4SLinus TorvaldsKBUILD_BUILTIN := 1 2531da177e4SLinus Torvalds 2541da177e4SLinus Torvalds# If we have only "make modules", don't compile built-in objects. 2551da177e4SLinus Torvalds# When we're building modules with modversions, we need to consider 2561da177e4SLinus Torvalds# the built-in objects during the descend as well, in order to 2571da177e4SLinus Torvalds# make sure the checksums are up to date before we record them. 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvaldsifeq ($(MAKECMDGOALS),modules) 2601da177e4SLinus Torvalds KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 2611da177e4SLinus Torvaldsendif 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds# If we have "make <whatever> modules", compile modules 2641da177e4SLinus Torvalds# in addition to whatever we do anyway. 2651da177e4SLinus Torvalds# Just "make" or "make all" shall build modules as well 2661da177e4SLinus Torvalds 2671da177e4SLinus Torvaldsifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 2681da177e4SLinus Torvalds KBUILD_MODULES := 1 2691da177e4SLinus Torvaldsendif 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvaldsifeq ($(MAKECMDGOALS),) 2721da177e4SLinus Torvalds KBUILD_MODULES := 1 2731da177e4SLinus Torvaldsendif 2741da177e4SLinus Torvalds 275e579d351SSam Ravnborgexport KBUILD_MODULES KBUILD_BUILTIN 2761da177e4SLinus Torvaldsexport KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 2771da177e4SLinus Torvalds 2781da177e4SLinus Torvalds# Beautify output 2791da177e4SLinus Torvalds# --------------------------------------------------------------------------- 2801da177e4SLinus Torvalds# 2811da177e4SLinus Torvalds# Normally, we echo the whole command before executing it. By making 2821da177e4SLinus Torvalds# that echo $($(quiet)$(cmd)), we now have the possibility to set 2831da177e4SLinus Torvalds# $(quiet) to choose other forms of output instead, e.g. 2841da177e4SLinus Torvalds# 2851da177e4SLinus Torvalds# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 2861da177e4SLinus Torvalds# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 2871da177e4SLinus Torvalds# 2881da177e4SLinus Torvalds# If $(quiet) is empty, the whole command will be printed. 2891da177e4SLinus Torvalds# If it is set to "quiet_", only the short version will be printed. 290070b98bfSSam Ravnborg# If it is set to "silent_", nothing will be printed at all, since 2911da177e4SLinus Torvalds# the variable $(silent_cmd_cc_o_c) doesn't exist. 2921da177e4SLinus Torvalds# 293a58a414fSAdrian Bunk# A simple variant is to prefix commands with $(Q) - that's useful 2941da177e4SLinus Torvalds# for commands that shall be hidden in non-verbose mode. 2951da177e4SLinus Torvalds# 2961da177e4SLinus Torvalds# $(Q)ln $@ :< 2971da177e4SLinus Torvalds# 2981da177e4SLinus Torvalds# If KBUILD_VERBOSE equals 0 then the above command will be hidden. 2991da177e4SLinus Torvalds# If KBUILD_VERBOSE equals 1 then the above command is displayed. 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvaldsifeq ($(KBUILD_VERBOSE),1) 3021da177e4SLinus Torvalds quiet = 3031da177e4SLinus Torvalds Q = 3041da177e4SLinus Torvaldselse 3051da177e4SLinus Torvalds quiet=quiet_ 3061da177e4SLinus Torvalds Q = @ 3071da177e4SLinus Torvaldsendif 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds# If the user is running make -s (silent mode), suppress echoing of 3101da177e4SLinus Torvalds# commands 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvaldsifneq ($(findstring s,$(MAKEFLAGS)),) 3131da177e4SLinus Torvalds quiet=silent_ 3141da177e4SLinus Torvaldsendif 3151da177e4SLinus Torvalds 3161da177e4SLinus Torvaldsexport quiet Q KBUILD_VERBOSE 3171da177e4SLinus Torvalds 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds# Look for make include files relative to root of kernel src 3201da177e4SLinus TorvaldsMAKEFLAGS += --include-dir=$(srctree) 3211da177e4SLinus Torvalds 3221cacc9abSSam Ravnborg# We need some generic definitions (do not try to remake the file). 3231cacc9abSSam Ravnborg$(srctree)/scripts/Kbuild.include: ; 3242a691470SSam Ravnborginclude $(srctree)/scripts/Kbuild.include 3258ec4b4ffSSam Ravnborg 3261da177e4SLinus Torvalds# Make variables (CC, etc...) 3271da177e4SLinus Torvalds 3281da177e4SLinus TorvaldsAS = $(CROSS_COMPILE)as 3291da177e4SLinus TorvaldsLD = $(CROSS_COMPILE)ld 3301da177e4SLinus TorvaldsCC = $(CROSS_COMPILE)gcc 3311da177e4SLinus TorvaldsCPP = $(CC) -E 3321da177e4SLinus TorvaldsAR = $(CROSS_COMPILE)ar 3331da177e4SLinus TorvaldsNM = $(CROSS_COMPILE)nm 3341da177e4SLinus TorvaldsSTRIP = $(CROSS_COMPILE)strip 3351da177e4SLinus TorvaldsOBJCOPY = $(CROSS_COMPILE)objcopy 3361da177e4SLinus TorvaldsOBJDUMP = $(CROSS_COMPILE)objdump 3371da177e4SLinus TorvaldsAWK = awk 3381da177e4SLinus TorvaldsGENKSYMS = scripts/genksyms/genksyms 339caa27b66SSam RavnborgINSTALLKERNEL := installkernel 3401da177e4SLinus TorvaldsDEPMOD = /sbin/depmod 3411da177e4SLinus TorvaldsKALLSYMS = scripts/kallsyms 3421da177e4SLinus TorvaldsPERL = perl 3431da177e4SLinus TorvaldsCHECK = sparse 3441da177e4SLinus Torvalds 34580a7d1d9SHannes EderCHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 34680a7d1d9SHannes Eder -Wbitwise -Wno-return-void $(CF) 3476588169dSSam RavnborgCFLAGS_MODULE = 3486588169dSSam RavnborgAFLAGS_MODULE = 3496588169dSSam RavnborgLDFLAGS_MODULE = 3501da177e4SLinus TorvaldsCFLAGS_KERNEL = 3511da177e4SLinus TorvaldsAFLAGS_KERNEL = 3522521f2c2SPeter OberparleiterCFLAGS_GCOV = -fprofile-arcs -ftest-coverage 3531da177e4SLinus Torvalds 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds# Use LINUXINCLUDE when you must reference the include/ directory. 3561da177e4SLinus Torvalds# Needed to be compatible with the O= option 35724a675e8SSam RavnborgLINUXINCLUDE := -I$(srctree)/arch/$(hdr-arch)/include -Iinclude \ 35896f13045SSam Ravnborg $(if $(KBUILD_SRC), -I$(srctree)/include) \ 359264a2683SSam Ravnborg -include include/generated/autoconf.h 3601da177e4SLinus Torvalds 361d8672b40SSam RavnborgKBUILD_CPPFLAGS := -D__KERNEL__ 3621da177e4SLinus Torvalds 363a0f97e06SSam RavnborgKBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 36494bed2a9SDave Jones -fno-strict-aliasing -fno-common \ 365a8735821SFloris Kraak -Werror-implicit-function-declaration \ 366a3ca86aeSEugene Teo -Wno-format-security \ 367a3ca86aeSEugene Teo -fno-delete-null-pointer-checks 36880c00ba9SSam RavnborgKBUILD_AFLAGS_KERNEL := 36980c00ba9SSam RavnborgKBUILD_CFLAGS_KERNEL := 370222d394dSSam RavnborgKBUILD_AFLAGS := -D__ASSEMBLY__ 3716588169dSSam RavnborgKBUILD_AFLAGS_MODULE := -DMODULE 3726588169dSSam RavnborgKBUILD_CFLAGS_MODULE := -DMODULE 3736588169dSSam RavnborgKBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 3741da177e4SLinus Torvalds 375f1d28fb0SRoman Zippel# Read KERNELRELEASE from include/config/kernel.release (if it exists) 376f1d28fb0SRoman ZippelKERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 3772244cbd8SSam RavnborgKERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) 378cb58455cSSam Ravnborg 379070b98bfSSam Ravnborgexport VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 38080ef88d6SSam Ravnborgexport ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 381caa27b66SSam Ravnborgexport CPP AR NM STRIP OBJCOPY OBJDUMP 382caa27b66SSam Ravnborgexport MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE 383070b98bfSSam Ravnborgexport HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 3841da177e4SLinus Torvalds 38506c5040cSSam Ravnborgexport KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 3862521f2c2SPeter Oberparleiterexport KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV 387222d394dSSam Ravnborgexport KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 3886588169dSSam Ravnborgexport KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 38980c00ba9SSam Ravnborgexport KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 3901da177e4SLinus Torvalds 3911da177e4SLinus Torvalds# When compiling out-of-tree modules, put MODVERDIR in the module 3921da177e4SLinus Torvalds# tree rather than in the kernel tree. The kernel tree might 3931da177e4SLinus Torvalds# even be read-only. 3941da177e4SLinus Torvaldsexport MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 3951da177e4SLinus Torvalds 3961da177e4SLinus Torvalds# Files to ignore in find ... statements 3971da177e4SLinus Torvalds 398406119f4STrond MyklebustRCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o 399406119f4STrond Myklebustexport RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git 4001da177e4SLinus Torvalds 4011da177e4SLinus Torvalds# =========================================================================== 4021da177e4SLinus Torvalds# Rules shared between *config targets and build targets 4031da177e4SLinus Torvalds 4041da177e4SLinus Torvalds# Basic helpers built in scripts/ 4054f193362SPaul SmithPHONY += scripts_basic 4061da177e4SLinus Torvaldsscripts_basic: 4071da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/basic 408638adb05SSteven Rostedt $(Q)rm -f .tmp_quiet_recordmcount 4091da177e4SLinus Torvalds 410cd05e6bdSJan Beulich# To avoid any implicit rule to kick in, define an empty command. 411cd05e6bdSJan Beulichscripts/basic/%: scripts_basic ; 412cd05e6bdSJan Beulich 4134f193362SPaul SmithPHONY += outputmakefile 414fd5f0cd6SJan Beulich# outputmakefile generates a Makefile in the output directory, if using a 415fd5f0cd6SJan Beulich# separate output directory. This allows convenient use of make in the 416fd5f0cd6SJan Beulich# output directory. 4171da177e4SLinus Torvaldsoutputmakefile: 418fd5f0cd6SJan Beulichifneq ($(KBUILD_SRC),) 41992979997SAndi Kleen $(Q)ln -fsn $(srctree) source 420fd5f0cd6SJan Beulich $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 421fd5f0cd6SJan Beulich $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 422fd5f0cd6SJan Beulichendif 4231da177e4SLinus Torvalds 4241da177e4SLinus Torvalds# To make sure we do not include .config for any of the *config targets 4251da177e4SLinus Torvalds# catch them early, and hand them over to scripts/kconfig/Makefile 4261da177e4SLinus Torvalds# It is allowed to specify more targets when calling make, including 4271da177e4SLinus Torvalds# mixing *config targets and build targets. 4281da177e4SLinus Torvalds# For example 'make oldconfig all'. 4291da177e4SLinus Torvalds# Detect when mixed targets is specified, and make a second invocation 4301da177e4SLinus Torvalds# of make so .config is not included in this case either (for *config). 4311da177e4SLinus Torvalds 4323eb3c740SRoman Zippelno-dot-config-targets := clean mrproper distclean \ 433f4ed1009SJianbin Kang cscope gtags TAGS tags help %docs check% coccicheck \ 4343eb3c740SRoman Zippel include/linux/version.h headers_% \ 4354aed2fd8SLinus Torvalds kernelversion %src-pkg 4361da177e4SLinus Torvalds 4371da177e4SLinus Torvaldsconfig-targets := 0 4381da177e4SLinus Torvaldsmixed-targets := 0 4391da177e4SLinus Torvaldsdot-config := 1 4401da177e4SLinus Torvalds 4411da177e4SLinus Torvaldsifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 4421da177e4SLinus Torvalds ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 4431da177e4SLinus Torvalds dot-config := 0 4441da177e4SLinus Torvalds endif 4451da177e4SLinus Torvaldsendif 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 4481da177e4SLinus Torvalds ifneq ($(filter config %config,$(MAKECMDGOALS)),) 4491da177e4SLinus Torvalds config-targets := 1 4501da177e4SLinus Torvalds ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 4511da177e4SLinus Torvalds mixed-targets := 1 4521da177e4SLinus Torvalds endif 4531da177e4SLinus Torvalds endif 4541da177e4SLinus Torvaldsendif 4551da177e4SLinus Torvalds 4561da177e4SLinus Torvaldsifeq ($(mixed-targets),1) 4571da177e4SLinus Torvalds# =========================================================================== 4581da177e4SLinus Torvalds# We're called with mixed targets (*config and build targets). 4591da177e4SLinus Torvalds# Handle them one by one. 4601da177e4SLinus Torvalds 4611da177e4SLinus Torvalds%:: FORCE 4621da177e4SLinus Torvalds $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ 4631da177e4SLinus Torvalds 4641da177e4SLinus Torvaldselse 4651da177e4SLinus Torvaldsifeq ($(config-targets),1) 4661da177e4SLinus Torvalds# =========================================================================== 4671da177e4SLinus Torvalds# *config targets only - make sure prerequisites are updated, and descend 4681da177e4SLinus Torvalds# in scripts/kconfig to make the *config target 4691da177e4SLinus Torvalds 4701da177e4SLinus Torvalds# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 4711da177e4SLinus Torvalds# KBUILD_DEFCONFIG may point out an alternative default configuration 4721da177e4SLinus Torvalds# used for 'make defconfig' 47374b469f2SSam Ravnborginclude $(srctree)/arch/$(SRCARCH)/Makefile 47461bee204SAl Viroexport KBUILD_DEFCONFIG KBUILD_KCONFIG 4751da177e4SLinus Torvalds 47631110ebbSSam Ravnborgconfig: scripts_basic outputmakefile FORCE 47731110ebbSSam Ravnborg $(Q)mkdir -p include/linux include/config 47831110ebbSSam Ravnborg $(Q)$(MAKE) $(build)=scripts/kconfig $@ 47931110ebbSSam Ravnborg 48031110ebbSSam Ravnborg%config: scripts_basic outputmakefile FORCE 481c955ccafSRoman Zippel $(Q)mkdir -p include/linux include/config 4821da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=scripts/kconfig $@ 4831da177e4SLinus Torvalds 4841da177e4SLinus Torvaldselse 4851da177e4SLinus Torvalds# =========================================================================== 4861da177e4SLinus Torvalds# Build targets only - this includes vmlinux, arch specific targets, clean 4871da177e4SLinus Torvalds# targets and others. In general all targets except *config targets. 4881da177e4SLinus Torvalds 4891da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 4901da177e4SLinus Torvalds# Additional helpers built in scripts/ 4911da177e4SLinus Torvalds# Carefully list dependencies so we do not try to build scripts twice 492070b98bfSSam Ravnborg# in parallel 4934f193362SPaul SmithPHONY += scripts 494bc081dd6SMichal Marekscripts: scripts_basic include/config/auto.conf include/config/tristate.conf 4951da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=$(@) 4961da177e4SLinus Torvalds 4971da177e4SLinus Torvalds# Objects we will link into vmlinux / subdirs we need to visit 4981da177e4SLinus Torvaldsinit-y := init/ 4994d2acfbfSDavid Woodhousedrivers-y := drivers/ sound/ firmware/ 5001da177e4SLinus Torvaldsnet-y := net/ 5011da177e4SLinus Torvaldslibs-y := lib/ 5021da177e4SLinus Torvaldscore-y := usr/ 5031da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 5041da177e4SLinus Torvalds 5051da177e4SLinus Torvaldsifeq ($(dot-config),1) 5069ee4e336SSam Ravnborg# Read in config 5079ee4e336SSam Ravnborg-include include/config/auto.conf 5081da177e4SLinus Torvalds 5099ee4e336SSam Ravnborgifeq ($(KBUILD_EXTMOD),) 5101da177e4SLinus Torvalds# Read in dependencies to all Kconfig* files, make sure to run 5111da177e4SLinus Torvalds# oldconfig if changes are detected. 512c955ccafSRoman Zippel-include include/config/auto.conf.cmd 5131da177e4SLinus Torvalds 5141da177e4SLinus Torvalds# To avoid any implicit rule to kick in, define an empty command 51514cdd3c4SRoman Zippel$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 5161da177e4SLinus Torvalds 517c955ccafSRoman Zippel# If .config is newer than include/config/auto.conf, someone tinkered 518752625cfSSam Ravnborg# with it and forgot to run make oldconfig. 519070b98bfSSam Ravnborg# if auto.conf.cmd is missing then we are probably in a cleaned tree so 520752625cfSSam Ravnborg# we execute the config step to be sure to catch updated Kconfig files 521bc081dd6SMichal Marekinclude/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 5221da177e4SLinus Torvalds $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 5231da177e4SLinus Torvaldselse 524264a2683SSam Ravnborg# external modules needs include/generated/autoconf.h and include/config/auto.conf 5259ee4e336SSam Ravnborg# but do not care if they are up-to-date. Use auto.conf to trigger the test 5269ee4e336SSam RavnborgPHONY += include/config/auto.conf 5279ee4e336SSam Ravnborg 5289ee4e336SSam Ravnborginclude/config/auto.conf: 529264a2683SSam Ravnborg $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 5309ee4e336SSam Ravnborg echo; \ 5319ee4e336SSam Ravnborg echo " ERROR: Kernel configuration is invalid."; \ 532264a2683SSam Ravnborg echo " include/generated/autoconf.h or $@ are missing.";\ 5339ee4e336SSam Ravnborg echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 5349ee4e336SSam Ravnborg echo; \ 5359ee4e336SSam Ravnborg /bin/false) 5369ee4e336SSam Ravnborg 5379ee4e336SSam Ravnborgendif # KBUILD_EXTMOD 538c955ccafSRoman Zippel 5391da177e4SLinus Torvaldselse 5401da177e4SLinus Torvalds# Dummy target needed, because used as prerequisite 541c955ccafSRoman Zippelinclude/config/auto.conf: ; 5429ee4e336SSam Ravnborgendif # $(dot-config) 5431da177e4SLinus Torvalds 5441da177e4SLinus Torvalds# The all: target is the default when no target is given on the 5451da177e4SLinus Torvalds# command line. 5461da177e4SLinus Torvalds# This allow a user to issue only 'make' to build a kernel including modules 547c8447161SMichal Marek# Defaults to vmlinux, but the arch makefile usually adds further targets 5481da177e4SLinus Torvaldsall: vmlinux 5491da177e4SLinus Torvalds 5501da177e4SLinus Torvaldsifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 551a0f97e06SSam RavnborgKBUILD_CFLAGS += -Os 5521da177e4SLinus Torvaldselse 553a0f97e06SSam RavnborgKBUILD_CFLAGS += -O2 5541da177e4SLinus Torvaldsendif 5551da177e4SLinus Torvalds 556bef5b54bSRalf Baechleinclude $(srctree)/arch/$(SRCARCH)/Makefile 557bef5b54bSRalf Baechle 55808f67461SMike Frysingerifneq ($(CONFIG_FRAME_WARN),0) 55935bb5b1eSAndi KleenKBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 56035bb5b1eSAndi Kleenendif 56135bb5b1eSAndi Kleen 562e06b8b98SSam Ravnborg# Force gcc to behave correct even for buggy distributions 5635d707e9cSTejun Heoifndef CONFIG_CC_STACKPROTECTOR 564e06b8b98SSam RavnborgKBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) 5655d707e9cSTejun Heoendif 566e06b8b98SSam Ravnborg 5671da177e4SLinus Torvaldsifdef CONFIG_FRAME_POINTER 568a0f97e06SSam RavnborgKBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 5691da177e4SLinus Torvaldselse 5707e9501fdSRabin Vincent# Some targets (ARM with Thumb2, for example), can't be built with frame 5717e9501fdSRabin Vincent# pointers. For those, we don't have FUNCTION_TRACER automatically 5727e9501fdSRabin Vincent# select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 5737e9501fdSRabin Vincent# incompatible with -fomit-frame-pointer with current GCC, so we don't use 5747e9501fdSRabin Vincent# -fomit-frame-pointer with FUNCTION_TRACER. 5757e9501fdSRabin Vincentifndef CONFIG_FUNCTION_TRACER 576a0f97e06SSam RavnborgKBUILD_CFLAGS += -fomit-frame-pointer 5771da177e4SLinus Torvaldsendif 5787e9501fdSRabin Vincentendif 5791da177e4SLinus Torvalds 5801da177e4SLinus Torvaldsifdef CONFIG_DEBUG_INFO 581a0f97e06SSam RavnborgKBUILD_CFLAGS += -g 582222d394dSSam RavnborgKBUILD_AFLAGS += -gdwarf-2 5831da177e4SLinus Torvaldsendif 5841da177e4SLinus Torvalds 585d6f4ceb7SAndi Kleenifdef CONFIG_DEBUG_INFO_REDUCED 586d6f4ceb7SAndi KleenKBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) 587d6f4ceb7SAndi Kleenendif 588d6f4ceb7SAndi Kleen 589606576ceSSteven Rostedtifdef CONFIG_FUNCTION_TRACER 59016444a8aSArnaldo Carvalho de MeloKBUILD_CFLAGS += -pg 59172441cb1SSteven Rostedtifdef CONFIG_DYNAMIC_FTRACE 592cf4db259SSteven Rostedt ifdef CONFIG_HAVE_C_RECORDMCOUNT 59372441cb1SSteven Rostedt BUILD_C_RECORDMCOUNT := y 59472441cb1SSteven Rostedt export BUILD_C_RECORDMCOUNT 59572441cb1SSteven Rostedt endif 59672441cb1SSteven Rostedtendif 59716444a8aSArnaldo Carvalho de Meloendif 59816444a8aSArnaldo Carvalho de Melo 59991341d4bSSam Ravnborg# We trigger additional mismatches with less inlining 60091341d4bSSam Ravnborgifdef CONFIG_DEBUG_SECTION_MISMATCH 60191341d4bSSam RavnborgKBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 60291341d4bSSam Ravnborgendif 60391341d4bSSam Ravnborg 604e8e69931SSam Ravnborg# arch Makefile may override CC so keep this after arch Makefile is included 605e8f5bdb0SRik van RielNOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 606e8e69931SSam RavnborgCHECKFLAGS += $(NOSTDINC_FLAGS) 607e8e69931SSam Ravnborg 6081da177e4SLinus Torvalds# warn about C99 declaration after statement 609a0f97e06SSam RavnborgKBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 6101da177e4SLinus Torvalds 611070b98bfSSam Ravnborg# disable pointer signed / unsigned warnings in gcc 4.0 612a0f97e06SSam RavnborgKBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) 6131da177e4SLinus Torvalds 614fe8d0a41SKirill Smelkov# disable invalid "can't wrap" optimizations for signed / pointers 615a137802eSLinus TorvaldsKBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 616d0115552SLinus Torvalds 6178f7f5c9fSAndi Kleen# conserve stack if available 6188f7f5c9fSAndi KleenKBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 6198f7f5c9fSAndi Kleen 620bf5438fcSJason Baron# check for 'asm goto' 621bf5438fcSJason Baronifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) 622bf5438fcSJason Baron KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO 623bf5438fcSJason Baronendif 624bf5438fcSJason Baron 62506c5040cSSam Ravnborg# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 62669ee0b35SSam Ravnborg# But warn user when we do so 62769ee0b35SSam Ravnborgwarn-assign = \ 62869ee0b35SSam Ravnborg$(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") 62969ee0b35SSam Ravnborg 63069ee0b35SSam Ravnborgifneq ($(KCPPFLAGS),) 63169ee0b35SSam Ravnborg $(call warn-assign,CPPFLAGS) 63269ee0b35SSam Ravnborg KBUILD_CPPFLAGS += $(KCPPFLAGS) 63369ee0b35SSam Ravnborgendif 63469ee0b35SSam Ravnborgifneq ($(KAFLAGS),) 63569ee0b35SSam Ravnborg $(call warn-assign,AFLAGS) 63669ee0b35SSam Ravnborg KBUILD_AFLAGS += $(KAFLAGS) 63769ee0b35SSam Ravnborgendif 63869ee0b35SSam Ravnborgifneq ($(KCFLAGS),) 63969ee0b35SSam Ravnborg $(call warn-assign,CFLAGS) 64069ee0b35SSam Ravnborg KBUILD_CFLAGS += $(KCFLAGS) 64169ee0b35SSam Ravnborgendif 64252bcc330SSam Ravnborg 64318991197SRoland McGrath# Use --build-id when available. 64418991197SRoland McGrathLDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 645f86fd306SSam Ravnborg $(call cc-ldoption, -Wl$(comma)--build-id,)) 6466588169dSSam RavnborgKBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 64718991197SRoland McGrathLDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 64818991197SRoland McGrath 6495d7d18f5SDavid Howellsifeq ($(CONFIG_STRIP_ASM_SYMS),y) 650d79a2719SAndi KleenLDFLAGS_vmlinux += $(call ld-option, -X,) 6515d7d18f5SDavid Howellsendif 6525d7d18f5SDavid Howells 6531da177e4SLinus Torvalds# Default kernel image to build when no specific target is given. 6541da177e4SLinus Torvalds# KBUILD_IMAGE may be overruled on the command line or 6551da177e4SLinus Torvalds# set in the environment 6561da177e4SLinus Torvalds# Also any assignments in arch/$(ARCH)/Makefile take precedence over 6571da177e4SLinus Torvalds# this default value 6581da177e4SLinus Torvaldsexport KBUILD_IMAGE ?= vmlinux 6591da177e4SLinus Torvalds 6601da177e4SLinus Torvalds# 6611da177e4SLinus Torvalds# INSTALL_PATH specifies where to place the updated kernel and system map 6621da177e4SLinus Torvalds# images. Default is /boot, but you can set it to other values 6631da177e4SLinus Torvaldsexport INSTALL_PATH ?= /boot 6641da177e4SLinus Torvalds 6651da177e4SLinus Torvalds# 6661da177e4SLinus Torvalds# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 6671da177e4SLinus Torvalds# relocations required by build roots. This is not defined in the 668070b98bfSSam Ravnborg# makefile but the argument can be passed to make if needed. 6691da177e4SLinus Torvalds# 6701da177e4SLinus Torvalds 671df9df036SSam RavnborgMODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 6721da177e4SLinus Torvaldsexport MODLIB 6731da177e4SLinus Torvalds 674ac031f26STheodore Ts'o# 6752ea03891SSam Ravnborg# INSTALL_MOD_STRIP, if defined, will cause modules to be 6762ea03891SSam Ravnborg# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 6772ea03891SSam Ravnborg# the default option --strip-debug will be used. Otherwise, 678177b241dSGilles Espinasse# INSTALL_MOD_STRIP value will be used as the options to the strip command. 6792ea03891SSam Ravnborg 680ac031f26STheodore Ts'oifdef INSTALL_MOD_STRIP 681ac031f26STheodore Ts'oifeq ($(INSTALL_MOD_STRIP),1) 6822ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) --strip-debug 683ac031f26STheodore Ts'oelse 6842ea03891SSam Ravnborgmod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 685ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP=1 686ac031f26STheodore Ts'oelse 6872ea03891SSam Ravnborgmod_strip_cmd = true 688ac031f26STheodore Ts'oendif # INSTALL_MOD_STRIP 689ac031f26STheodore Ts'oexport mod_strip_cmd 690ac031f26STheodore Ts'o 6911da177e4SLinus Torvalds 6921da177e4SLinus Torvaldsifeq ($(KBUILD_EXTMOD),) 6933a65dfe8SJens Axboecore-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 6941da177e4SLinus Torvalds 6951da177e4SLinus Torvaldsvmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 6961da177e4SLinus Torvalds $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 6971da177e4SLinus Torvalds $(net-y) $(net-m) $(libs-y) $(libs-m))) 6981da177e4SLinus Torvalds 6991da177e4SLinus Torvaldsvmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 7001da177e4SLinus Torvalds $(init-n) $(init-) \ 7011da177e4SLinus Torvalds $(core-n) $(core-) $(drivers-n) $(drivers-) \ 7021da177e4SLinus Torvalds $(net-n) $(net-) $(libs-n) $(libs-)))) 7031da177e4SLinus Torvalds 7041da177e4SLinus Torvaldsinit-y := $(patsubst %/, %/built-in.o, $(init-y)) 7051da177e4SLinus Torvaldscore-y := $(patsubst %/, %/built-in.o, $(core-y)) 7061da177e4SLinus Torvaldsdrivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 7071da177e4SLinus Torvaldsnet-y := $(patsubst %/, %/built-in.o, $(net-y)) 7081da177e4SLinus Torvaldslibs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 7091da177e4SLinus Torvaldslibs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 7101da177e4SLinus Torvaldslibs-y := $(libs-y1) $(libs-y2) 7111da177e4SLinus Torvalds 7121da177e4SLinus Torvalds# Build vmlinux 7131da177e4SLinus Torvalds# --------------------------------------------------------------------------- 714070b98bfSSam Ravnborg# vmlinux is built from the objects selected by $(vmlinux-init) and 7151da177e4SLinus Torvalds# $(vmlinux-main). Most are built-in.o files from top-level directories 7162462566fSUwe Zeisberger# in the kernel tree, others are specified in arch/$(ARCH)/Makefile. 7171da177e4SLinus Torvalds# Ordering when linking is important, and $(vmlinux-init) must be first. 7181da177e4SLinus Torvalds# 7191da177e4SLinus Torvalds# vmlinux 7201da177e4SLinus Torvalds# ^ 7211da177e4SLinus Torvalds# | 7221da177e4SLinus Torvalds# +-< $(vmlinux-init) 7231da177e4SLinus Torvalds# | +--< init/version.o + more 7241da177e4SLinus Torvalds# | 7251da177e4SLinus Torvalds# +--< $(vmlinux-main) 7261da177e4SLinus Torvalds# | +--< driver/built-in.o mm/built-in.o + more 7271da177e4SLinus Torvalds# | 7281da177e4SLinus Torvalds# +-< kallsyms.o (see description in CONFIG_KALLSYMS section) 7291da177e4SLinus Torvalds# 7301da177e4SLinus Torvalds# vmlinux version (uname -v) cannot be updated during normal 7311da177e4SLinus Torvalds# descending-into-subdirs phase since we do not yet know if we need to 7321da177e4SLinus Torvalds# update vmlinux. 7331da177e4SLinus Torvalds# Therefore this step is delayed until just before final link of vmlinux - 7341da177e4SLinus Torvalds# except in the kallsyms case where it is done just before adding the 7351da177e4SLinus Torvalds# symbols to the kernel. 7361da177e4SLinus Torvalds# 7371da177e4SLinus Torvalds# System.map is generated to document addresses of all kernel symbols 7381da177e4SLinus Torvalds 7391da177e4SLinus Torvaldsvmlinux-init := $(head-y) $(init-y) 7401da177e4SLinus Torvaldsvmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) 7411da177e4SLinus Torvaldsvmlinux-all := $(vmlinux-init) $(vmlinux-main) 7426752ed90SThomas Gleixnervmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds 74385bd2fddSSam Ravnborgexport KBUILD_VMLINUX_OBJS := $(vmlinux-all) 7441da177e4SLinus Torvalds 7451da177e4SLinus Torvalds# Rule to link vmlinux - also used during CONFIG_KALLSYMS 7461da177e4SLinus Torvalds# May be overridden by arch/$(ARCH)/Makefile 7471da177e4SLinus Torvaldsquiet_cmd_vmlinux__ ?= LD $@ 7481da177e4SLinus Torvalds cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ 7491da177e4SLinus Torvalds -T $(vmlinux-lds) $(vmlinux-init) \ 7501da177e4SLinus Torvalds --start-group $(vmlinux-main) --end-group \ 751741f98feSSam Ravnborg $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) 7521da177e4SLinus Torvalds 7531da177e4SLinus Torvalds# Generate new vmlinux version 7541da177e4SLinus Torvaldsquiet_cmd_vmlinux_version = GEN .version 7551da177e4SLinus Torvalds cmd_vmlinux_version = set -e; \ 7564e25d8bbSJan Beulich if [ ! -r .version ]; then \ 7574e25d8bbSJan Beulich rm -f .version; \ 7584e25d8bbSJan Beulich echo 1 >.version; \ 7594e25d8bbSJan Beulich else \ 7604e25d8bbSJan Beulich mv .version .old_version; \ 7614e25d8bbSJan Beulich expr 0$$(cat .old_version) + 1 >.version; \ 7624e25d8bbSJan Beulich fi; \ 7631da177e4SLinus Torvalds $(MAKE) $(build)=init 7641da177e4SLinus Torvalds 7651da177e4SLinus Torvalds# Generate System.map 7661da177e4SLinus Torvaldsquiet_cmd_sysmap = SYSMAP 7671da177e4SLinus Torvalds cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap 7681da177e4SLinus Torvalds 7691da177e4SLinus Torvalds# Link of vmlinux 7701da177e4SLinus Torvalds# If CONFIG_KALLSYMS is set .version is already updated 7711da177e4SLinus Torvalds# Generate System.map and verify that the content is consistent 77239ca371cSMark Rustad# Use + in front of the vmlinux_version rule to silent warning with make -j2 77339ca371cSMark Rustad# First command is ':' to allow us to use + in front of the rule 7741da177e4SLinus Torvaldsdefine rule_vmlinux__ 77539ca371cSMark Rustad : 7761da177e4SLinus Torvalds $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) 7771da177e4SLinus Torvalds 7781da177e4SLinus Torvalds $(call cmd,vmlinux__) 7791da177e4SLinus Torvalds $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 7801da177e4SLinus Torvalds 7811da177e4SLinus Torvalds $(Q)$(if $($(quiet)cmd_sysmap), \ 7821da177e4SLinus Torvalds echo ' $($(quiet)cmd_sysmap) System.map' &&) \ 7831da177e4SLinus Torvalds $(cmd_sysmap) $@ System.map; \ 7841da177e4SLinus Torvalds if [ $$? -ne 0 ]; then \ 7851da177e4SLinus Torvalds rm -f $@; \ 7861da177e4SLinus Torvalds /bin/false; \ 7871da177e4SLinus Torvalds fi; 7881da177e4SLinus Torvalds $(verify_kallsyms) 7891da177e4SLinus Torvaldsendef 7901da177e4SLinus Torvalds 7911da177e4SLinus Torvalds 7921da177e4SLinus Torvaldsifdef CONFIG_KALLSYMS 7931da177e4SLinus Torvalds# Generate section listing all symbols and add it into vmlinux $(kallsyms.o) 7941da177e4SLinus Torvalds# It's a three stage process: 7951da177e4SLinus Torvalds# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is 7961da177e4SLinus Torvalds# empty 7971da177e4SLinus Torvalds# Running kallsyms on that gives us .tmp_kallsyms1.o with 7981da177e4SLinus Torvalds# the right size - vmlinux version (uname -v) is updated during this step 7991da177e4SLinus Torvalds# o .tmp_vmlinux2 now has a __kallsyms section of the right size, 8001da177e4SLinus Torvalds# but due to the added section, some addresses have shifted. 8011da177e4SLinus Torvalds# From here, we generate a correct .tmp_kallsyms2.o 8021da177e4SLinus Torvalds# o The correct .tmp_kallsyms2.o is linked into the final vmlinux. 8031da177e4SLinus Torvalds# o Verify that the System.map from vmlinux matches the map from 8041da177e4SLinus Torvalds# .tmp_vmlinux2, just in case we did not generate kallsyms correctly. 8051da177e4SLinus Torvalds# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using 8061da177e4SLinus Torvalds# .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a 8071da177e4SLinus Torvalds# temporary bypass to allow the kernel to be built while the 8081da177e4SLinus Torvalds# maintainers work out what went wrong with kallsyms. 8091da177e4SLinus Torvalds 8101da177e4SLinus Torvaldsifdef CONFIG_KALLSYMS_EXTRA_PASS 8111da177e4SLinus Torvaldslast_kallsyms := 3 8121da177e4SLinus Torvaldselse 8131da177e4SLinus Torvaldslast_kallsyms := 2 8141da177e4SLinus Torvaldsendif 8151da177e4SLinus Torvalds 8161da177e4SLinus Torvaldskallsyms.o := .tmp_kallsyms$(last_kallsyms).o 8171da177e4SLinus Torvalds 8181da177e4SLinus Torvaldsdefine verify_kallsyms 8191da177e4SLinus Torvalds $(Q)$(if $($(quiet)cmd_sysmap), \ 8201da177e4SLinus Torvalds echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ 8211da177e4SLinus Torvalds $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map 8221da177e4SLinus Torvalds $(Q)cmp -s System.map .tmp_System.map || \ 8231da177e4SLinus Torvalds (echo Inconsistent kallsyms data; \ 8241da177e4SLinus Torvalds echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ 8251da177e4SLinus Torvalds rm .tmp_kallsyms* ; /bin/false ) 8261da177e4SLinus Torvaldsendef 8271da177e4SLinus Torvalds 8281da177e4SLinus Torvalds# Update vmlinux version before link 8291da177e4SLinus Torvalds# Use + in front of this rule to silent warning about make -j1 83072ba47c1SSam Ravnborg# First command is ':' to allow us to use + in front of this rule 8311da177e4SLinus Torvaldscmd_ksym_ld = $(cmd_vmlinux__) 8321da177e4SLinus Torvaldsdefine rule_ksym_ld 83372ba47c1SSam Ravnborg : 8341da177e4SLinus Torvalds +$(call cmd,vmlinux_version) 8351da177e4SLinus Torvalds $(call cmd,vmlinux__) 8361da177e4SLinus Torvalds $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 8371da177e4SLinus Torvaldsendef 8381da177e4SLinus Torvalds 8391da177e4SLinus Torvalds# Generate .S file with all kernel symbols 8401da177e4SLinus Torvaldsquiet_cmd_kallsyms = KSYM $@ 8412ea03891SSam Ravnborg cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ 8422ea03891SSam Ravnborg $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ 8431da177e4SLinus Torvalds 8442ea03891SSam Ravnborg.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE 8451da177e4SLinus Torvalds $(call if_changed_dep,as_o_S) 8461da177e4SLinus Torvalds 8472ea03891SSam Ravnborg.tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) 8481da177e4SLinus Torvalds $(call cmd,kallsyms) 8491da177e4SLinus Torvalds 8501da177e4SLinus Torvalds# .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version 8512ea03891SSam Ravnborg.tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE 8522ea03891SSam Ravnborg $(call if_changed_rule,ksym_ld) 8531da177e4SLinus Torvalds 8542ea03891SSam Ravnborg.tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE 8552ea03891SSam Ravnborg $(call if_changed,vmlinux__) 8561da177e4SLinus Torvalds 8572ea03891SSam Ravnborg.tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE 8582ea03891SSam Ravnborg $(call if_changed,vmlinux__) 8591da177e4SLinus Torvalds 8601da177e4SLinus Torvalds# Needs to visit scripts/ before $(KALLSYMS) can be used. 8611da177e4SLinus Torvalds$(KALLSYMS): scripts ; 8621da177e4SLinus Torvalds 86333bc25eaSSam Ravnborg# Generate some data for debugging strange kallsyms problems 86433bc25eaSSam Ravnborgdebug_kallsyms: .tmp_map$(last_kallsyms) 86533bc25eaSSam Ravnborg 86633bc25eaSSam Ravnborg.tmp_map%: .tmp_vmlinux% FORCE 86733bc25eaSSam Ravnborg ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ 86833bc25eaSSam Ravnborg 86933bc25eaSSam Ravnborg.tmp_map3: .tmp_map2 87033bc25eaSSam Ravnborg 87133bc25eaSSam Ravnborg.tmp_map2: .tmp_map1 87233bc25eaSSam Ravnborg 8731da177e4SLinus Torvaldsendif # ifdef CONFIG_KALLSYMS 8741da177e4SLinus Torvalds 875741f98feSSam Ravnborg# Do modpost on a prelinked vmlinux. The finally linked vmlinux has 876741f98feSSam Ravnborg# relevant sections renamed as per the linker script. 877741f98feSSam Ravnborgquiet_cmd_vmlinux-modpost = LD $@ 878741f98feSSam Ravnborg cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ 879741f98feSSam Ravnborg $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ 88090ebd878SSam Ravnborg $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) 881741f98feSSam Ravnborgdefine rule_vmlinux-modpost 882741f98feSSam Ravnborg : 883741f98feSSam Ravnborg +$(call cmd,vmlinux-modpost) 884741f98feSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ 885741f98feSSam Ravnborg $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd 886741f98feSSam Ravnborgendef 887741f98feSSam Ravnborg 8881da177e4SLinus Torvalds# vmlinux image - including updated kernel symbols 889310f8243SSam Ravnborgvmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE 8900f836e5fSDavid Woodhouseifdef CONFIG_HEADERS_CHECK 8910e7af8d0SDavid Woodhouse $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 8920f836e5fSDavid Woodhouseendif 893267c4025SMathieu Desnoyersifdef CONFIG_SAMPLES 894267c4025SMathieu Desnoyers $(Q)$(MAKE) $(build)=samples 895267c4025SMathieu Desnoyersendif 8963794f3e8SRandy Dunlapifdef CONFIG_BUILD_DOCSRC 8973794f3e8SRandy Dunlap $(Q)$(MAKE) $(build)=Documentation 8983794f3e8SRandy Dunlapendif 899741f98feSSam Ravnborg $(call vmlinux-modpost) 9001da177e4SLinus Torvalds $(call if_changed_rule,vmlinux__) 9014e25d8bbSJan Beulich $(Q)rm -f .old_version 9021da177e4SLinus Torvalds 903310f8243SSam Ravnborg# build vmlinux.o first to catch section mismatch errors early 904cf87dcd1SSam Ravnborgifdef CONFIG_KALLSYMS 905cf87dcd1SSam Ravnborg.tmp_vmlinux1: vmlinux.o 906cf87dcd1SSam Ravnborgendif 90790ebd878SSam Ravnborg 90890ebd878SSam Ravnborgmodpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) 90990ebd878SSam Ravnborgvmlinux.o: $(modpost-init) $(vmlinux-main) FORCE 910741f98feSSam Ravnborg $(call if_changed_rule,vmlinux-modpost) 911741f98feSSam Ravnborg 9121da177e4SLinus Torvalds# The actual objects are generated when descending, 9131da177e4SLinus Torvalds# make sure no implicit rule kicks in 9141da177e4SLinus Torvalds$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; 9151da177e4SLinus Torvalds 9161da177e4SLinus Torvalds# Handle descending into subdirectories listed in $(vmlinux-dirs) 9171da177e4SLinus Torvalds# Preset locale variables to speed up the build process. Limit locale 9181da177e4SLinus Torvalds# tweaks to this spot to avoid wrong language settings when running 9191da177e4SLinus Torvalds# make menuconfig etc. 9201da177e4SLinus Torvalds# Error messages still appears in the original language 9211da177e4SLinus Torvalds 9224f193362SPaul SmithPHONY += $(vmlinux-dirs) 9235bb78269SSam Ravnborg$(vmlinux-dirs): prepare scripts 9241da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=$@ 9251da177e4SLinus Torvalds 926f1d28fb0SRoman Zippel# Store (new) KERNELRELASE string in include/config/kernel.release 927f1d28fb0SRoman Zippelinclude/config/kernel.release: include/config/auto.conf FORCE 9282244cbd8SSam Ravnborg $(Q)rm -f $@ 9297263e715SMichal Marek $(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@ 930cb58455cSSam Ravnborg 931cb58455cSSam Ravnborg 9321da177e4SLinus Torvalds# Things we need to do before we recursively start building the kernel 9335bb78269SSam Ravnborg# or the modules are listed in "prepare". 9345bb78269SSam Ravnborg# A multi level approach is used. prepareN is processed before prepareN-1. 9355bb78269SSam Ravnborg# archprepare is used in arch Makefiles and when processed asm symlink, 9365bb78269SSam Ravnborg# version.h and scripts_basic is processed / created. 9371da177e4SLinus Torvalds 9385bb78269SSam Ravnborg# Listed in dependency order 9394f193362SPaul SmithPHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 9405bb78269SSam Ravnborg 94186feeaa8SSam Ravnborg# prepare3 is used to check if we are building in a separate output directory, 9421da177e4SLinus Torvalds# and if so do: 9431da177e4SLinus Torvalds# 1) Check that make has not been executed in the kernel src $(srctree) 944f1d28fb0SRoman Zippelprepare3: include/config/kernel.release 9451da177e4SLinus Torvaldsifneq ($(KBUILD_SRC),) 946fd54f502SMike Frysinger @$(kecho) ' Using $(srctree) as source for kernel' 947c955ccafSRoman Zippel $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 9481da177e4SLinus Torvalds echo " $(srctree) is not clean, please run 'make mrproper'";\ 9491da177e4SLinus Torvalds echo " in the '$(srctree)' directory.";\ 9501da177e4SLinus Torvalds /bin/false; \ 9511da177e4SLinus Torvalds fi; 9521da177e4SLinus Torvaldsendif 9531da177e4SLinus Torvalds 95486feeaa8SSam Ravnborg# prepare2 creates a makefile if using a separate output directory 95586feeaa8SSam Ravnborgprepare2: prepare3 outputmakefile 9561da177e4SLinus Torvalds 957273b281fSSam Ravnborgprepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \ 958f7f16b77SSam Ravnborg include/config/auto.conf 9597bb9d092SSam Ravnborg $(cmd_crmodverdir) 9601da177e4SLinus Torvalds 9615bb78269SSam Ravnborgarchprepare: prepare1 scripts_basic 9625bb78269SSam Ravnborg 9635bb78269SSam Ravnborgprepare0: archprepare FORCE 9648d36a623SSam Ravnborg $(Q)$(MAKE) $(build)=. 965c53aeca0SSam Ravnborg $(Q)$(MAKE) $(build)=. missing-syscalls 96686feeaa8SSam Ravnborg 9671da177e4SLinus Torvalds# All the preparing.. 968d395efb5SRobert P. J. Dayprepare: prepare0 9691da177e4SLinus Torvalds 9701da177e4SLinus Torvalds# Generate some files 9711da177e4SLinus Torvalds# --------------------------------------------------------------------------- 9721da177e4SLinus Torvalds 9731da177e4SLinus Torvalds# KERNELRELEASE can change from a few different places, meaning version.h 9741da177e4SLinus Torvalds# needs to be updated, so this check is forced on all builds 9751da177e4SLinus Torvalds 9761da177e4SLinus Torvaldsuts_len := 64 97763104eecSSam Ravnborgdefine filechk_utsrelease.h 9781da177e4SLinus Torvalds if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 9791da177e4SLinus Torvalds echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 9801da177e4SLinus Torvalds exit 1; \ 9811da177e4SLinus Torvalds fi; \ 98263104eecSSam Ravnborg (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 9831da177e4SLinus Torvaldsendef 9841da177e4SLinus Torvalds 98563104eecSSam Ravnborgdefine filechk_version.h 98663104eecSSam Ravnborg (echo \#define LINUX_VERSION_CODE $(shell \ 98763104eecSSam Ravnborg expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 98863104eecSSam Ravnborg echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 98963104eecSSam Ravnborgendef 99063104eecSSam Ravnborg 99163104eecSSam Ravnborginclude/linux/version.h: $(srctree)/Makefile FORCE 9921da177e4SLinus Torvalds $(call filechk,version.h) 9931da177e4SLinus Torvalds 994273b281fSSam Ravnborginclude/generated/utsrelease.h: include/config/kernel.release FORCE 99563104eecSSam Ravnborg $(call filechk,utsrelease.h) 99663104eecSSam Ravnborg 997179efcb4SVegard NossumPHONY += headerdep 998179efcb4SVegard Nossumheaderdep: 999179efcb4SVegard Nossum $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl 1000179efcb4SVegard Nossum 10011da177e4SLinus Torvalds# --------------------------------------------------------------------------- 10021da177e4SLinus Torvalds 10034f193362SPaul SmithPHONY += depend dep 10041da177e4SLinus Torvaldsdepend dep: 10051da177e4SLinus Torvalds @echo '*** Warning: make $@ is unnecessary now.' 10061da177e4SLinus Torvalds 10071da177e4SLinus Torvalds# --------------------------------------------------------------------------- 100888ecf814SDavid Woodhouse# Firmware install 100988ecf814SDavid WoodhouseINSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware 101088ecf814SDavid Woodhouseexport INSTALL_FW_PATH 101188ecf814SDavid Woodhouse 101288ecf814SDavid WoodhousePHONY += firmware_install 101388ecf814SDavid Woodhousefirmware_install: FORCE 101488ecf814SDavid Woodhouse @mkdir -p $(objtree)/firmware 101588ecf814SDavid Woodhouse $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 101688ecf814SDavid Woodhouse 101788ecf814SDavid Woodhouse# --------------------------------------------------------------------------- 10188d730cfbSDavid Woodhouse# Kernel headers 10198d730cfbSDavid Woodhouse 1020e6883b18SSam Ravnborg#Default location for installed headers 1021e6883b18SSam Ravnborgexport INSTALL_HDR_PATH = $(objtree)/usr 1022e6883b18SSam Ravnborg 1023e6883b18SSam Ravnborghdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj 10242fb9b1bdSSam Ravnborg 10252fb9b1bdSSam Ravnborg# If we do an all arch process set dst to asm-$(hdr-arch) 10262fb9b1bdSSam Ravnborghdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1027e6883b18SSam Ravnborg 1028e6883b18SSam RavnborgPHONY += __headers 1029e6883b18SSam Ravnborg__headers: include/linux/version.h scripts_basic FORCE 1030e1b702cfSMike Waychison $(Q)$(MAKE) $(build)=scripts build_unifdef 10316d716275SDavid Woodhouse 10326d716275SDavid WoodhousePHONY += headers_install_all 10332fb9b1bdSSam Ravnborgheaders_install_all: 10342fb9b1bdSSam Ravnborg $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 10356d716275SDavid Woodhouse 10368d730cfbSDavid WoodhousePHONY += headers_install 1037e6883b18SSam Ravnborgheaders_install: __headers 1038c95fa08aSSam Ravnborg $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \ 10392fb9b1bdSSam Ravnborg $(error Headers not exportable for the $(SRCARCH) architecture)) 104088181ec3SSam Ravnborg $(Q)$(MAKE) $(hdr-inst)=include 1041c95fa08aSSam Ravnborg $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) 10428d730cfbSDavid Woodhouse 10431f85712eSMike FrysingerPHONY += headers_check_all 10441f85712eSMike Frysingerheaders_check_all: headers_install_all 10452fb9b1bdSSam Ravnborg $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 10461f85712eSMike Frysinger 104768475359SDavid WoodhousePHONY += headers_check 104868475359SDavid Woodhouseheaders_check: headers_install 104988181ec3SSam Ravnborg $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 1050c95fa08aSSam Ravnborg $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1 105168475359SDavid Woodhouse 10528d730cfbSDavid Woodhouse# --------------------------------------------------------------------------- 10531da177e4SLinus Torvalds# Modules 10541da177e4SLinus Torvalds 10551da177e4SLinus Torvaldsifdef CONFIG_MODULES 10561da177e4SLinus Torvalds 10571da177e4SLinus Torvalds# By default, build modules as well 10581da177e4SLinus Torvalds 105973d1393eSMichal Marekall: modules 10601da177e4SLinus Torvalds 10611da177e4SLinus Torvalds# Build modules 1062551559e1STejun Heo# 1063551559e1STejun Heo# A module can be listed more than once in obj-m resulting in 1064551559e1STejun Heo# duplicate lines in modules.order files. Those are removed 1065551559e1STejun Heo# using awk while concatenating to the final file. 10661da177e4SLinus Torvalds 10674f193362SPaul SmithPHONY += modules 10682da30e70SMichal Marekmodules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin 1069551559e1STejun Heo $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1070fd54f502SMike Frysinger @$(kecho) ' Building modules, stage 2.'; 1071b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 107244463f7dSDavid Woodhouse $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 10731da177e4SLinus Torvalds 1074a6c36632SMichal Marekmodules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1075a6c36632SMichal Marek $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1076a6c36632SMichal Marek 107773d1393eSMichal Marek%/modules.builtin: include/config/auto.conf 1078a6c36632SMichal Marek $(Q)$(MAKE) $(modbuiltin)=$* 1079a6c36632SMichal Marek 10801da177e4SLinus Torvalds 10811da177e4SLinus Torvalds# Target to prepare building external modules 10824f193362SPaul SmithPHONY += modules_prepare 10835bb78269SSam Ravnborgmodules_prepare: prepare scripts 10841da177e4SLinus Torvalds 10851da177e4SLinus Torvalds# Target to install modules 10864f193362SPaul SmithPHONY += modules_install 10871da177e4SLinus Torvaldsmodules_install: _modinst_ _modinst_post 10881da177e4SLinus Torvalds 10894f193362SPaul SmithPHONY += _modinst_ 10902da30e70SMichal Marek_modinst_: 1091ce454d4dSTom Rini @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ 10921da177e4SLinus Torvalds echo "Warning: you may need to install module-init-tools"; \ 10931da177e4SLinus Torvalds echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ 10941da177e4SLinus Torvalds sleep 1; \ 10951da177e4SLinus Torvalds fi 10961da177e4SLinus Torvalds @rm -rf $(MODLIB)/kernel 10971da177e4SLinus Torvalds @rm -f $(MODLIB)/source 10981da177e4SLinus Torvalds @mkdir -p $(MODLIB)/kernel 10991da177e4SLinus Torvalds @ln -s $(srctree) $(MODLIB)/source 11001da177e4SLinus Torvalds @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 11011da177e4SLinus Torvalds rm -f $(MODLIB)/build ; \ 11021da177e4SLinus Torvalds ln -s $(objtree) $(MODLIB)/build ; \ 11031da177e4SLinus Torvalds fi 1104551559e1STejun Heo @cp -f $(objtree)/modules.order $(MODLIB)/ 1105bc081dd6SMichal Marek @cp -f $(objtree)/modules.builtin $(MODLIB)/ 1106b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 11071da177e4SLinus Torvalds 110850a8ec31SSam Ravnborg# This depmod is only for convenience to give the initial 11091da177e4SLinus Torvalds# boot a modules.dep even before / is mounted read-write. However the 11101da177e4SLinus Torvalds# boot script depmod is the master version. 11114f193362SPaul SmithPHONY += _modinst_post 11121da177e4SLinus Torvalds_modinst_post: _modinst_ 111388ecf814SDavid Woodhouse $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst 111450a8ec31SSam Ravnborg $(call cmd,depmod) 11151da177e4SLinus Torvalds 11161da177e4SLinus Torvaldselse # CONFIG_MODULES 11171da177e4SLinus Torvalds 11181da177e4SLinus Torvalds# Modules not configured 11191da177e4SLinus Torvalds# --------------------------------------------------------------------------- 11201da177e4SLinus Torvalds 11211da177e4SLinus Torvaldsmodules modules_install: FORCE 11221da177e4SLinus Torvalds @echo 11231da177e4SLinus Torvalds @echo "The present kernel configuration has modules disabled." 11241da177e4SLinus Torvalds @echo "Type 'make config' and enable loadable module support." 11251da177e4SLinus Torvalds @echo "Then build a kernel with module support enabled." 11261da177e4SLinus Torvalds @echo 11271da177e4SLinus Torvalds @exit 1 11281da177e4SLinus Torvalds 11291da177e4SLinus Torvaldsendif # CONFIG_MODULES 11301da177e4SLinus Torvalds 11311da177e4SLinus Torvalds### 11321da177e4SLinus Torvalds# Cleaning is done on three levels. 11331da177e4SLinus Torvalds# make clean Delete most generated files 11341da177e4SLinus Torvalds# Leave enough to build external modules 11351da177e4SLinus Torvalds# make mrproper Delete the current configuration, and all generated files 11361da177e4SLinus Torvalds# make distclean Remove editor backup files, patch leftover files and the like 11371da177e4SLinus Torvalds 11381da177e4SLinus Torvalds# Directories & files removed with 'make clean' 11391da177e4SLinus TorvaldsCLEAN_DIRS += $(MODVERDIR) 11401da177e4SLinus TorvaldsCLEAN_FILES += vmlinux System.map \ 11411da177e4SLinus Torvalds .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map 11421da177e4SLinus Torvalds 11431da177e4SLinus Torvalds# Directories & files removed with 'make mrproper' 114496f13045SSam RavnborgMRPROPER_DIRS += include/config usr/include include/generated 1145f7f16b77SSam RavnborgMRPROPER_FILES += .config .config.old .version .old_version \ 1146264a2683SSam Ravnborg include/linux/version.h \ 1147f4ed1009SJianbin Kang Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS 11481da177e4SLinus Torvalds 11491da177e4SLinus Torvalds# clean - Delete most, but leave enough to build external modules 11501da177e4SLinus Torvalds# 11511da177e4SLinus Torvaldsclean: rm-dirs := $(CLEAN_DIRS) 11521da177e4SLinus Torvaldsclean: rm-files := $(CLEAN_FILES) 1153c47f214aSMichal Marekclean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation) 11541da177e4SLinus Torvalds 11554f193362SPaul SmithPHONY += $(clean-dirs) clean archclean 11561da177e4SLinus Torvalds$(clean-dirs): 11571da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 11581da177e4SLinus Torvalds 115988d7be03SMichal Marekclean: archclean 11601da177e4SLinus Torvalds 11611da177e4SLinus Torvalds# mrproper - Delete all generated files, including .config 11621da177e4SLinus Torvalds# 11631da177e4SLinus Torvaldsmrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 11641da177e4SLinus Torvaldsmrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 11651da177e4SLinus Torvaldsmrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 11661da177e4SLinus Torvalds 11674f193362SPaul SmithPHONY += $(mrproper-dirs) mrproper archmrproper 11681da177e4SLinus Torvalds$(mrproper-dirs): 11691da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 11701da177e4SLinus Torvalds 11711da177e4SLinus Torvaldsmrproper: clean archmrproper $(mrproper-dirs) 11721da177e4SLinus Torvalds $(call cmd,rmdirs) 11731da177e4SLinus Torvalds $(call cmd,rmfiles) 11741da177e4SLinus Torvalds 11751da177e4SLinus Torvalds# distclean 11761da177e4SLinus Torvalds# 11774f193362SPaul SmithPHONY += distclean 11781da177e4SLinus Torvalds 11791da177e4SLinus Torvaldsdistclean: mrproper 11801da177e4SLinus Torvalds @find $(srctree) $(RCS_FIND_IGNORE) \ 11811da177e4SLinus Torvalds \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 11821da177e4SLinus Torvalds -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 11831da177e4SLinus Torvalds -o -name '.*.rej' -o -size 0 \ 11841da177e4SLinus Torvalds -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ 11851da177e4SLinus Torvalds -type f -print | xargs rm -f 11861da177e4SLinus Torvalds 11871da177e4SLinus Torvalds 11881da177e4SLinus Torvalds# Packaging of the kernel to various formats 11891da177e4SLinus Torvalds# --------------------------------------------------------------------------- 11901da177e4SLinus Torvalds# rpm target kept for backward compatibility 11911da177e4SLinus Torvaldspackage-dir := $(srctree)/scripts/package 11921da177e4SLinus Torvalds 1193bafb6747SArnaldo Carvalho de Melo%src-pkg: FORCE 1194bafb6747SArnaldo Carvalho de Melo $(Q)$(MAKE) $(build)=$(package-dir) $@ 1195031ecc6dSZach Brown%pkg: include/config/kernel.release FORCE 11966c2133e1SSam Ravnborg $(Q)$(MAKE) $(build)=$(package-dir) $@ 1197031ecc6dSZach Brownrpm: include/config/kernel.release FORCE 11986c2133e1SSam Ravnborg $(Q)$(MAKE) $(build)=$(package-dir) $@ 11991da177e4SLinus Torvalds 12001da177e4SLinus Torvalds 12011da177e4SLinus Torvalds# Brief documentation of the typical targets used 12021da177e4SLinus Torvalds# --------------------------------------------------------------------------- 12031da177e4SLinus Torvalds 12045dffbe81SSegher Boessenkoolboards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 12051da177e4SLinus Torvaldsboards := $(notdir $(boards)) 12065dffbe81SSegher Boessenkoolboard-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 12075dffbe81SSegher Boessenkoolboard-dirs := $(sort $(notdir $(board-dirs:/=))) 12081da177e4SLinus Torvalds 12091da177e4SLinus Torvaldshelp: 12101da177e4SLinus Torvalds @echo 'Cleaning targets:' 12115ea084efSSamuel Tardieu @echo ' clean - Remove most generated files but keep the config and' 12125cc8d246SJesper Juhl @echo ' enough build support to build external modules' 12135ea084efSSamuel Tardieu @echo ' mrproper - Remove all generated files + config + various backup files' 12145cc8d246SJesper Juhl @echo ' distclean - mrproper + remove editor backup and patch files' 12151da177e4SLinus Torvalds @echo '' 12161da177e4SLinus Torvalds @echo 'Configuration targets:' 12171da177e4SLinus Torvalds @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 12181da177e4SLinus Torvalds @echo '' 12191da177e4SLinus Torvalds @echo 'Other generic targets:' 12201da177e4SLinus Torvalds @echo ' all - Build all targets marked with [*]' 12211da177e4SLinus Torvalds @echo '* vmlinux - Build the bare kernel' 12221da177e4SLinus Torvalds @echo '* modules - Build all modules' 12239cc5d74cSBodo Eggert @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 122488ecf814SDavid Woodhouse @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' 122588ecf814SDavid Woodhouse @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 12261da177e4SLinus Torvalds @echo ' dir/ - Build all files in dir and below' 122762718979SJoe Perches @echo ' dir/file.[oisS] - Build specified target only' 122862718979SJoe Perches @echo ' dir/file.lst - Build specified mixed source/assembly target only' 122962718979SJoe Perches @echo ' (requires a recent binutils and recent build (System.map))' 1230155ad605SSam Ravnborg @echo ' dir/file.ko - Build module including final link' 1231c4d5ee67SRobert P. J. Day @echo ' modules_prepare - Set up for building external modules' 12321da177e4SLinus Torvalds @echo ' tags/TAGS - Generate tags file for editors' 12331da177e4SLinus Torvalds @echo ' cscope - Generate cscope index' 1234f4ed1009SJianbin Kang @echo ' gtags - Generate GNU GLOBAL index' 12356d128842SZach Brown @echo ' kernelrelease - Output the release version string' 1236cb58455cSSam Ravnborg @echo ' kernelversion - Output the version stored in Makefile' 12372fb9b1bdSSam Ravnborg @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 123859df3230SGeert Uytterhoeven echo ' (default: $(INSTALL_HDR_PATH))'; \ 12392fb9b1bdSSam Ravnborg echo '' 12401da177e4SLinus Torvalds @echo 'Static analysers' 12411da177e4SLinus Torvalds @echo ' checkstack - Generate a list of stack hogs' 12421da177e4SLinus Torvalds @echo ' namespacecheck - Name space analysis on compiled kernel' 1243aa025e7dSSam Ravnborg @echo ' versioncheck - Sanity check on version.h usage' 1244ec2d987fSRandy Dunlap @echo ' includecheck - Check for duplicate included header files' 1245295ac051SAdrian Bunk @echo ' export_report - List the usages of all exported symbols' 1246179efcb4SVegard Nossum @echo ' headers_check - Sanity check on exported headers' 124774425eeeSNicolas Palix @echo ' headerdep - Detect inclusion cycles in headers' 124874425eeeSNicolas Palix @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 124974425eeeSNicolas Palix @echo '' 12501da177e4SLinus Torvalds @echo 'Kernel packaging:' 12516c2133e1SSam Ravnborg @$(MAKE) $(build)=$(package-dir) help 12521da177e4SLinus Torvalds @echo '' 12531da177e4SLinus Torvalds @echo 'Documentation targets:' 12541da177e4SLinus Torvalds @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 12551da177e4SLinus Torvalds @echo '' 125601dee188SAndres Salomon @echo 'Architecture specific targets ($(SRCARCH)):' 12571da177e4SLinus Torvalds @$(if $(archhelp),$(archhelp),\ 125801dee188SAndres Salomon echo ' No architecture specific help defined for $(SRCARCH)') 12591da177e4SLinus Torvalds @echo '' 12601da177e4SLinus Torvalds @$(if $(boards), \ 12611da177e4SLinus Torvalds $(foreach b, $(boards), \ 12621da177e4SLinus Torvalds printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 12631da177e4SLinus Torvalds echo '') 12645dffbe81SSegher Boessenkool @$(if $(board-dirs), \ 12655dffbe81SSegher Boessenkool $(foreach b, $(board-dirs), \ 12665dffbe81SSegher Boessenkool printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 12675dffbe81SSegher Boessenkool printf " %-16s - Show all of the above\\n" help-boards; \ 12685dffbe81SSegher Boessenkool echo '') 12691da177e4SLinus Torvalds 12701da177e4SLinus Torvalds @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 127145d506bdSSam Ravnborg @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 12721da177e4SLinus Torvalds @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1273701842e3SDustin Kirkland @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1274701842e3SDustin Kirkland @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 12754a5838adSBorislav Petkov @echo ' make W=1 [targets] Enable extra gcc checks' 12761da177e4SLinus Torvalds @echo '' 12771da177e4SLinus Torvalds @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 12781da177e4SLinus Torvalds @echo 'For further info see the ./README file' 12791da177e4SLinus Torvalds 12801da177e4SLinus Torvalds 12815dffbe81SSegher Boessenkoolhelp-board-dirs := $(addprefix help-,$(board-dirs)) 12825dffbe81SSegher Boessenkool 12835dffbe81SSegher Boessenkoolhelp-boards: $(help-board-dirs) 12845dffbe81SSegher Boessenkool 12855dffbe81SSegher Boessenkoolboards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) 12865dffbe81SSegher Boessenkool 12875dffbe81SSegher Boessenkool$(help-board-dirs): help-%: 12885dffbe81SSegher Boessenkool @echo 'Architecture specific targets ($(SRCARCH) $*):' 12895dffbe81SSegher Boessenkool @$(if $(boards-per-dir), \ 12905dffbe81SSegher Boessenkool $(foreach b, $(boards-per-dir), \ 12915dffbe81SSegher Boessenkool printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 12925dffbe81SSegher Boessenkool echo '') 12935dffbe81SSegher Boessenkool 12945dffbe81SSegher Boessenkool 12951da177e4SLinus Torvalds# Documentation targets 12961da177e4SLinus Torvalds# --------------------------------------------------------------------------- 12971da177e4SLinus Torvalds%docs: scripts_basic FORCE 12981da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 12991da177e4SLinus Torvalds 13001da177e4SLinus Torvaldselse # KBUILD_EXTMOD 13011da177e4SLinus Torvalds 13021da177e4SLinus Torvalds### 13031da177e4SLinus Torvalds# External module support. 13041da177e4SLinus Torvalds# When building external modules the kernel used as basis is considered 13051da177e4SLinus Torvalds# read-only, and no consistency checks are made and the make 13061da177e4SLinus Torvalds# system is not used on the basis kernel. If updates are required 13071da177e4SLinus Torvalds# in the basis kernel ordinary make commands (without M=...) must 13081da177e4SLinus Torvalds# be used. 13091da177e4SLinus Torvalds# 13101da177e4SLinus Torvalds# The following are the only valid targets when building external 13111da177e4SLinus Torvalds# modules. 13121da177e4SLinus Torvalds# make M=dir clean Delete all automatically generated files 13131da177e4SLinus Torvalds# make M=dir modules Make all modules in specified dir 13141da177e4SLinus Torvalds# make M=dir Same as 'make M=dir modules' 13151da177e4SLinus Torvalds# make M=dir modules_install 1316070b98bfSSam Ravnborg# Install the modules built in the module directory 13171da177e4SLinus Torvalds# Assumes install directory is already created 13181da177e4SLinus Torvalds 13191da177e4SLinus Torvalds# We are always building modules 13201da177e4SLinus TorvaldsKBUILD_MODULES := 1 13214f193362SPaul SmithPHONY += crmodverdir 13221da177e4SLinus Torvaldscrmodverdir: 13237bb9d092SSam Ravnborg $(cmd_crmodverdir) 13241da177e4SLinus Torvalds 13254f193362SPaul SmithPHONY += $(objtree)/Module.symvers 13261da177e4SLinus Torvalds$(objtree)/Module.symvers: 13271da177e4SLinus Torvalds @test -e $(objtree)/Module.symvers || ( \ 13281da177e4SLinus Torvalds echo; \ 13291da177e4SLinus Torvalds echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 13301da177e4SLinus Torvalds echo " is missing; modules will have no dependencies and modversions."; \ 13311da177e4SLinus Torvalds echo ) 13321da177e4SLinus Torvalds 13331da177e4SLinus Torvaldsmodule-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 13344f193362SPaul SmithPHONY += $(module-dirs) modules 13351da177e4SLinus Torvalds$(module-dirs): crmodverdir $(objtree)/Module.symvers 13361da177e4SLinus Torvalds $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 13371da177e4SLinus Torvalds 13381da177e4SLinus Torvaldsmodules: $(module-dirs) 1339fd54f502SMike Frysinger @$(kecho) ' Building modules, stage 2.'; 1340b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 13411da177e4SLinus Torvalds 13424f193362SPaul SmithPHONY += modules_install 1343a67dc21aSSam Ravnborgmodules_install: _emodinst_ _emodinst_post 1344a67dc21aSSam Ravnborg 1345a67dc21aSSam Ravnborginstall-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 13464f193362SPaul SmithPHONY += _emodinst_ 1347a67dc21aSSam Ravnborg_emodinst_: 1348a67dc21aSSam Ravnborg $(Q)mkdir -p $(MODLIB)/$(install-dir) 1349b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 13501da177e4SLinus Torvalds 13514f193362SPaul SmithPHONY += _emodinst_post 1352a67dc21aSSam Ravnborg_emodinst_post: _emodinst_ 1353a67dc21aSSam Ravnborg $(call cmd,depmod) 1354a67dc21aSSam Ravnborg 13551da177e4SLinus Torvaldsclean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 13561da177e4SLinus Torvalds 13574f193362SPaul SmithPHONY += $(clean-dirs) clean 13581da177e4SLinus Torvalds$(clean-dirs): 13591da177e4SLinus Torvalds $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 13601da177e4SLinus Torvalds 13611da177e4SLinus Torvaldsclean: rm-dirs := $(MODVERDIR) 136288d7be03SMichal Marekclean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 13631da177e4SLinus Torvalds 13641da177e4SLinus Torvaldshelp: 13651da177e4SLinus Torvalds @echo ' Building external modules.' 13661da177e4SLinus Torvalds @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 13671da177e4SLinus Torvalds @echo '' 13681da177e4SLinus Torvalds @echo ' modules - default target, build the module(s)' 13691da177e4SLinus Torvalds @echo ' modules_install - install the module' 13701da177e4SLinus Torvalds @echo ' clean - remove generated files in module directory only' 13711da177e4SLinus Torvalds @echo '' 137206300b21SSam Ravnborg 137306300b21SSam Ravnborg# Dummies... 13744f193362SPaul SmithPHONY += prepare scripts 137506300b21SSam Ravnborgprepare: ; 137606300b21SSam Ravnborgscripts: ; 13771da177e4SLinus Torvaldsendif # KBUILD_EXTMOD 13781da177e4SLinus Torvalds 137988d7be03SMichal Marekclean: $(clean-dirs) 138088d7be03SMichal Marek $(call cmd,rmdirs) 138188d7be03SMichal Marek $(call cmd,rmfiles) 138288d7be03SMichal Marek @find $(or $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 138388d7be03SMichal Marek \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 138488d7be03SMichal Marek -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 138588d7be03SMichal Marek -o -name '*.symtypes' -o -name 'modules.order' \ 138688d7be03SMichal Marek -o -name modules.builtin -o -name '.tmp_*.o.*' \ 138788d7be03SMichal Marek -o -name '*.gcno' \) -type f -print | xargs rm -f 138888d7be03SMichal Marek 13891da177e4SLinus Torvalds# Generate tags for editors 13901da177e4SLinus Torvalds# --------------------------------------------------------------------------- 1391a680eedcSSam Ravnborgquiet_cmd_tags = GEN $@ 1392a680eedcSSam Ravnborg cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 13931da177e4SLinus Torvalds 1394f4ed1009SJianbin Kangtags TAGS cscope gtags: FORCE 13951da177e4SLinus Torvalds $(call cmd,tags) 13961da177e4SLinus Torvalds 13971da177e4SLinus Torvalds# Scripts to check various things for consistency 13981da177e4SLinus Torvalds# --------------------------------------------------------------------------- 13991da177e4SLinus Torvalds 14001da177e4SLinus Torvaldsincludecheck: 14011da177e4SLinus Torvalds find * $(RCS_FIND_IGNORE) \ 14021da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 140380007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 14041da177e4SLinus Torvalds 14051da177e4SLinus Torvaldsversioncheck: 14061da177e4SLinus Torvalds find * $(RCS_FIND_IGNORE) \ 14071da177e4SLinus Torvalds -name '*.[hcS]' -type f -print | sort \ 140880007434SGeert Uytterhoeven | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 14091da177e4SLinus Torvalds 141074425eeeSNicolas Palixcoccicheck: 141174425eeeSNicolas Palix $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 141274425eeeSNicolas Palix 14131da177e4SLinus Torvaldsnamespacecheck: 14141da177e4SLinus Torvalds $(PERL) $(srctree)/scripts/namespace.pl 14151da177e4SLinus Torvalds 1416295ac051SAdrian Bunkexport_report: 1417295ac051SAdrian Bunk $(PERL) $(srctree)/scripts/export_report.pl 1418295ac051SAdrian Bunk 14191da177e4SLinus Torvaldsendif #ifeq ($(config-targets),1) 14201da177e4SLinus Torvaldsendif #ifeq ($(mixed-targets),1) 14211da177e4SLinus Torvalds 1422c30a02e0SRoman ZippelPHONY += checkstack kernelrelease kernelversion 1423e3ccf6e3SJeff Dike 1424011e3a9aSJeff Dike# UML needs a little special treatment here. It wants to use the host 1425011e3a9aSJeff Dike# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1426011e3a9aSJeff Dike# else wants $(ARCH), including people doing cross-builds, which means 1427011e3a9aSJeff Dike# that $(SUBARCH) doesn't work here. 1428011e3a9aSJeff Dikeifeq ($(ARCH), um) 1429011e3a9aSJeff DikeCHECKSTACK_ARCH := $(SUBARCH) 1430011e3a9aSJeff Dikeelse 1431011e3a9aSJeff DikeCHECKSTACK_ARCH := $(ARCH) 1432011e3a9aSJeff Dikeendif 14331da177e4SLinus Torvaldscheckstack: 14341da177e4SLinus Torvalds $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1435011e3a9aSJeff Dike $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 14361da177e4SLinus Torvalds 14377b8ea53dSAmerigo Wangkernelrelease: 14387b8ea53dSAmerigo Wang @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 143901ab1788SAmerigo Wang 1440cb58455cSSam Ravnborgkernelversion: 14412244cbd8SSam Ravnborg @echo $(KERNELVERSION) 14421da177e4SLinus Torvalds 144306300b21SSam Ravnborg# Single targets 144406300b21SSam Ravnborg# --------------------------------------------------------------------------- 1445bc2546a6SSam Ravnborg# Single targets are compatible with: 1446e1b8513dSRobert P. J. Day# - build with mixed source and output 1447bc2546a6SSam Ravnborg# - build with separate output dir 'make O=...' 1448bc2546a6SSam Ravnborg# - external modules 1449bc2546a6SSam Ravnborg# 1450bc2546a6SSam Ravnborg# target-dir => where to store outputfile 1451bc2546a6SSam Ravnborg# build-dir => directory in kernel source tree to use 145206300b21SSam Ravnborg 145306300b21SSam Ravnborgifeq ($(KBUILD_EXTMOD),) 1454aa360879SSam Ravnborg build-dir = $(patsubst %/,%,$(dir $@)) 1455bc2546a6SSam Ravnborg target-dir = $(dir $@) 145606300b21SSam Ravnborgelse 145706300b21SSam Ravnborg zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1458bc2546a6SSam Ravnborg build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1459bc2546a6SSam Ravnborg target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 146006300b21SSam Ravnborgendif 146106300b21SSam Ravnborg 1462bc2546a6SSam Ravnborg%.s: %.c prepare scripts FORCE 1463bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1464bc2546a6SSam Ravnborg%.i: %.c prepare scripts FORCE 1465bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1466bc2546a6SSam Ravnborg%.o: %.c prepare scripts FORCE 1467bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1468bc2546a6SSam Ravnborg%.lst: %.c prepare scripts FORCE 1469bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1470bc2546a6SSam Ravnborg%.s: %.S prepare scripts FORCE 1471bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1472bc2546a6SSam Ravnborg%.o: %.S prepare scripts FORCE 1473bc2546a6SSam Ravnborg $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 147415fde675SAndreas Gruenbacher%.symtypes: %.c prepare scripts FORCE 147515fde675SAndreas Gruenbacher $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1476bc2546a6SSam Ravnborg 1477bc2546a6SSam Ravnborg# Modules 147831110ebbSSam Ravnborg/: prepare scripts FORCE 147931110ebbSSam Ravnborg $(cmd_crmodverdir) 148031110ebbSSam Ravnborg $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 148131110ebbSSam Ravnborg $(build)=$(build-dir) 148231110ebbSSam Ravnborg%/: prepare scripts FORCE 14837bb9d092SSam Ravnborg $(cmd_crmodverdir) 148406300b21SSam Ravnborg $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1485bc2546a6SSam Ravnborg $(build)=$(build-dir) 1486bc2546a6SSam Ravnborg%.ko: prepare scripts FORCE 14877bb9d092SSam Ravnborg $(cmd_crmodverdir) 148806300b21SSam Ravnborg $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1489bc2546a6SSam Ravnborg $(build)=$(build-dir) $(@:.ko=.o) 1490b805aa0eSSam Ravnborg $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 149106300b21SSam Ravnborg 14921da177e4SLinus Torvalds# FIXME Should go into a make.lib or something 14931da177e4SLinus Torvalds# =========================================================================== 14941da177e4SLinus Torvalds 14951da177e4SLinus Torvaldsquiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 14961da177e4SLinus Torvalds cmd_rmdirs = rm -rf $(rm-dirs) 14971da177e4SLinus Torvalds 14981da177e4SLinus Torvaldsquiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 14991da177e4SLinus Torvalds cmd_rmfiles = rm -f $(rm-files) 15001da177e4SLinus Torvalds 1501bc3c26feSUwe Kleine-König# Run depmod only if we have System.map and depmod is executable 150250a8ec31SSam Ravnborgquiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 150350a8ec31SSam Ravnborg cmd_depmod = \ 1504d8d2e78aSSam Ravnborg if [ -r System.map -a -x $(DEPMOD) ]; then \ 150550a8ec31SSam Ravnborg $(DEPMOD) -ae -F System.map \ 150675bccd88SGilles Espinasse $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) ) \ 150750a8ec31SSam Ravnborg $(KERNELRELEASE); \ 150850a8ec31SSam Ravnborg fi 150950a8ec31SSam Ravnborg 15107bb9d092SSam Ravnborg# Create temporary dir for module support files 1511ab19f879SSam Ravnborg# clean it up only when building all modules 1512ab19f879SSam Ravnborgcmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1513ab19f879SSam Ravnborg $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 15141da177e4SLinus Torvalds 1515222d394dSSam Ravnborga_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ 151680c00ba9SSam Ravnborg $(KBUILD_AFLAGS_KERNEL) \ 1517d8672b40SSam Ravnborg $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \ 15185e8d780dSSam Ravnborg $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) 15191da177e4SLinus Torvalds 15201da177e4SLinus Torvaldsquiet_cmd_as_o_S = AS $@ 15211da177e4SLinus Torvaldscmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< 15221da177e4SLinus Torvalds 15231da177e4SLinus Torvalds# read all saved command lines 15241da177e4SLinus Torvalds 15251da177e4SLinus Torvaldstargets := $(wildcard $(sort $(targets))) 15261da177e4SLinus Torvaldscmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 15271da177e4SLinus Torvalds 15281da177e4SLinus Torvaldsifneq ($(cmd_files),) 15291da177e4SLinus Torvalds $(cmd_files): ; # Do not try to update included dependency files 15301da177e4SLinus Torvalds include $(cmd_files) 15311da177e4SLinus Torvaldsendif 15321da177e4SLinus Torvalds 15331da177e4SLinus Torvalds# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir 15341da177e4SLinus Torvalds# Usage: 15351da177e4SLinus Torvalds# $(Q)$(MAKE) $(clean)=dir 15361da177e4SLinus Torvaldsclean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj 15371da177e4SLinus Torvalds 15381da177e4SLinus Torvaldsendif # skip-makefile 15391da177e4SLinus Torvalds 15404f193362SPaul SmithPHONY += FORCE 15411da177e4SLinus TorvaldsFORCE: 15424f193362SPaul Smith 15434f193362SPaul Smith# Declare the contents of the .PHONY variable as phony. We keep that 1544fe8d0a41SKirill Smelkov# information in a variable so we can use it in if_changed and friends. 15454f193362SPaul Smith.PHONY: $(PHONY) 1546