1VERSION = 2 2PATCHLEVEL = 6 3SUBLEVEL = 17 4EXTRAVERSION = 5NAME=Crazed Snow-Weasel 6 7# *DOCUMENTATION* 8# To see a list of typical targets execute "make help" 9# More info can be located in ./README 10# Comments in this file are targeted only to the developer, do not 11# expect to learn how to build the kernel reading this file. 12 13# Do not print "Entering directory ..." 14MAKEFLAGS += --no-print-directory 15 16# We are using a recursive build, so we need to do a little thinking 17# to get the ordering right. 18# 19# Most importantly: sub-Makefiles should only ever modify files in 20# their own directory. If in some directory we have a dependency on 21# a file in another dir (which doesn't happen often, but it's often 22# unavoidable when linking the built-in.o targets which finally 23# turn into vmlinux), we will call a sub make in that other dir, and 24# after that we are sure that everything which is in that other dir 25# is now up to date. 26# 27# The only cases where we need to modify files which have global 28# effects are thus separated out and done before the recursive 29# descending is started. They are now explicitly listed as the 30# prepare rule. 31 32# To put more focus on warnings, be less verbose as default 33# Use 'make V=1' to see the full commands 34 35ifdef V 36 ifeq ("$(origin V)", "command line") 37 KBUILD_VERBOSE = $(V) 38 endif 39endif 40ifndef KBUILD_VERBOSE 41 KBUILD_VERBOSE = 0 42endif 43 44# Call sparse as part of compilation of C files 45# Use 'make C=1' to enable sparse checking 46 47ifdef C 48 ifeq ("$(origin C)", "command line") 49 KBUILD_CHECKSRC = $(C) 50 endif 51endif 52ifndef KBUILD_CHECKSRC 53 KBUILD_CHECKSRC = 0 54endif 55 56# Use make M=dir to specify directory of external module to build 57# Old syntax make ... SUBDIRS=$PWD is still supported 58# Setting the environment variable KBUILD_EXTMOD take precedence 59ifdef SUBDIRS 60 KBUILD_EXTMOD ?= $(SUBDIRS) 61endif 62ifdef M 63 ifeq ("$(origin M)", "command line") 64 KBUILD_EXTMOD := $(M) 65 endif 66endif 67 68 69# kbuild supports saving output files in a separate directory. 70# To locate output files in a separate directory two syntaxes are supported. 71# In both cases the working directory must be the root of the kernel src. 72# 1) O= 73# Use "make O=dir/to/store/output/files/" 74# 75# 2) Set KBUILD_OUTPUT 76# Set the environment variable KBUILD_OUTPUT to point to the directory 77# where the output files shall be placed. 78# export KBUILD_OUTPUT=dir/to/store/output/files/ 79# make 80# 81# The O= assignment takes precedence over the KBUILD_OUTPUT environment 82# variable. 83 84 85# KBUILD_SRC is set on invocation of make in OBJ directory 86# KBUILD_SRC is not intended to be used by the regular user (for now) 87ifeq ($(KBUILD_SRC),) 88 89# OK, Make called in directory where kernel src resides 90# Do we want to locate output files in a separate directory? 91ifdef O 92 ifeq ("$(origin O)", "command line") 93 KBUILD_OUTPUT := $(O) 94 endif 95endif 96 97# That's our default target when none is given on the command line 98PHONY := _all 99_all: 100 101ifneq ($(KBUILD_OUTPUT),) 102# Invoke a second make in the output directory, passing relevant variables 103# check that the output directory actually exists 104saved-output := $(KBUILD_OUTPUT) 105KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) 106$(if $(KBUILD_OUTPUT),, \ 107 $(error output directory "$(saved-output)" does not exist)) 108 109PHONY += $(MAKECMDGOALS) 110 111$(filter-out _all,$(MAKECMDGOALS)) _all: 112 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ 113 KBUILD_SRC=$(CURDIR) \ 114 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@ 115 116# Leave processing to above invocation of make 117skip-makefile := 1 118endif # ifneq ($(KBUILD_OUTPUT),) 119endif # ifeq ($(KBUILD_SRC),) 120 121# We process the rest of the Makefile if this is the final invocation of make 122ifeq ($(skip-makefile),) 123 124# If building an external module we do not care about the all: rule 125# but instead _all depend on modules 126PHONY += all 127ifeq ($(KBUILD_EXTMOD),) 128_all: all 129else 130_all: modules 131endif 132 133srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) 134TOPDIR := $(srctree) 135# FIXME - TOPDIR is obsolete, use srctree/objtree 136objtree := $(CURDIR) 137src := $(srctree) 138obj := $(objtree) 139 140VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 141 142export srctree objtree VPATH TOPDIR 143 144 145# SUBARCH tells the usermode build what the underlying arch is. That is set 146# first, and if a usermode build is happening, the "ARCH=um" on the command 147# line overrides the setting of ARCH below. If a native build is happening, 148# then ARCH is assigned, getting whatever value it gets normally, and 149# SUBARCH is subsequently ignored. 150 151SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ 152 -e s/arm.*/arm/ -e s/sa110/arm/ \ 153 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 154 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ ) 155 156# Cross compiling and selecting different set of gcc/bin-utils 157# --------------------------------------------------------------------------- 158# 159# When performing cross compilation for other architectures ARCH shall be set 160# to the target architecture. (See arch/* for the possibilities). 161# ARCH can be set during invocation of make: 162# make ARCH=ia64 163# Another way is to have ARCH set in the environment. 164# The default ARCH is the host where make is executed. 165 166# CROSS_COMPILE specify the prefix used for all executables used 167# during compilation. Only gcc and related bin-utils executables 168# are prefixed with $(CROSS_COMPILE). 169# CROSS_COMPILE can be set on the command line 170# make CROSS_COMPILE=ia64-linux- 171# Alternatively CROSS_COMPILE can be set in the environment. 172# Default value for CROSS_COMPILE is not to prefix executables 173# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 174 175ARCH ?= $(SUBARCH) 176CROSS_COMPILE ?= 177 178# Architecture as present in compile.h 179UTS_MACHINE := $(ARCH) 180 181# SHELL used by kbuild 182CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 183 else if [ -x /bin/bash ]; then echo /bin/bash; \ 184 else echo sh; fi ; fi) 185 186HOSTCC = gcc 187HOSTCXX = g++ 188HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer 189HOSTCXXFLAGS = -O2 190 191# Decide whether to build built-in, modular, or both. 192# Normally, just do built-in. 193 194KBUILD_MODULES := 195KBUILD_BUILTIN := 1 196 197# If we have only "make modules", don't compile built-in objects. 198# When we're building modules with modversions, we need to consider 199# the built-in objects during the descend as well, in order to 200# make sure the checksums are uptodate before we record them. 201 202ifeq ($(MAKECMDGOALS),modules) 203 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 204endif 205 206# If we have "make <whatever> modules", compile modules 207# in addition to whatever we do anyway. 208# Just "make" or "make all" shall build modules as well 209 210ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 211 KBUILD_MODULES := 1 212endif 213 214ifeq ($(MAKECMDGOALS),) 215 KBUILD_MODULES := 1 216endif 217 218export KBUILD_MODULES KBUILD_BUILTIN 219export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 220 221# Beautify output 222# --------------------------------------------------------------------------- 223# 224# Normally, we echo the whole command before executing it. By making 225# that echo $($(quiet)$(cmd)), we now have the possibility to set 226# $(quiet) to choose other forms of output instead, e.g. 227# 228# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 229# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 230# 231# If $(quiet) is empty, the whole command will be printed. 232# If it is set to "quiet_", only the short version will be printed. 233# If it is set to "silent_", nothing wil be printed at all, since 234# the variable $(silent_cmd_cc_o_c) doesn't exist. 235# 236# A simple variant is to prefix commands with $(Q) - that's useful 237# for commands that shall be hidden in non-verbose mode. 238# 239# $(Q)ln $@ :< 240# 241# If KBUILD_VERBOSE equals 0 then the above command will be hidden. 242# If KBUILD_VERBOSE equals 1 then the above command is displayed. 243 244ifeq ($(KBUILD_VERBOSE),1) 245 quiet = 246 Q = 247else 248 quiet=quiet_ 249 Q = @ 250endif 251 252# If the user is running make -s (silent mode), suppress echoing of 253# commands 254 255ifneq ($(findstring s,$(MAKEFLAGS)),) 256 quiet=silent_ 257endif 258 259export quiet Q KBUILD_VERBOSE 260 261 262# Look for make include files relative to root of kernel src 263MAKEFLAGS += --include-dir=$(srctree) 264 265# We need some generic definitions 266include $(srctree)/scripts/Kbuild.include 267 268# For maximum performance (+ possibly random breakage, uncomment 269# the following) 270 271#MAKEFLAGS += -rR 272 273# Make variables (CC, etc...) 274 275AS = $(CROSS_COMPILE)as 276LD = $(CROSS_COMPILE)ld 277CC = $(CROSS_COMPILE)gcc 278CPP = $(CC) -E 279AR = $(CROSS_COMPILE)ar 280NM = $(CROSS_COMPILE)nm 281STRIP = $(CROSS_COMPILE)strip 282OBJCOPY = $(CROSS_COMPILE)objcopy 283OBJDUMP = $(CROSS_COMPILE)objdump 284AWK = awk 285GENKSYMS = scripts/genksyms/genksyms 286DEPMOD = /sbin/depmod 287KALLSYMS = scripts/kallsyms 288PERL = perl 289CHECK = sparse 290 291CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF) 292MODFLAGS = -DMODULE 293CFLAGS_MODULE = $(MODFLAGS) 294AFLAGS_MODULE = $(MODFLAGS) 295LDFLAGS_MODULE = -r 296CFLAGS_KERNEL = 297AFLAGS_KERNEL = 298 299 300# Use LINUXINCLUDE when you must reference the include/ directory. 301# Needed to be compatible with the O= option 302LINUXINCLUDE := -Iinclude \ 303 $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \ 304 -include include/linux/autoconf.h 305 306CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) 307 308CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 309 -fno-strict-aliasing -fno-common 310AFLAGS := -D__ASSEMBLY__ 311 312# Read KERNELRELEASE from .kernelrelease (if it exists) 313KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null) 314KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) 315 316export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \ 317 ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \ 318 CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \ 319 HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 320 321export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 322export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE 323export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 324 325# When compiling out-of-tree modules, put MODVERDIR in the module 326# tree rather than in the kernel tree. The kernel tree might 327# even be read-only. 328export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 329 330# Files to ignore in find ... statements 331 332RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o 333export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git 334 335# =========================================================================== 336# Rules shared between *config targets and build targets 337 338# Basic helpers built in scripts/ 339PHONY += scripts_basic 340scripts_basic: 341 $(Q)$(MAKE) $(build)=scripts/basic 342 343# To avoid any implicit rule to kick in, define an empty command. 344scripts/basic/%: scripts_basic ; 345 346PHONY += outputmakefile 347# outputmakefile generates a Makefile in the output directory, if using a 348# separate output directory. This allows convenient use of make in the 349# output directory. 350outputmakefile: 351ifneq ($(KBUILD_SRC),) 352 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 353 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 354endif 355 356# To make sure we do not include .config for any of the *config targets 357# catch them early, and hand them over to scripts/kconfig/Makefile 358# It is allowed to specify more targets when calling make, including 359# mixing *config targets and build targets. 360# For example 'make oldconfig all'. 361# Detect when mixed targets is specified, and make a second invocation 362# of make so .config is not included in this case either (for *config). 363 364no-dot-config-targets := clean mrproper distclean \ 365 cscope TAGS tags help %docs check% 366 367config-targets := 0 368mixed-targets := 0 369dot-config := 1 370 371ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 372 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 373 dot-config := 0 374 endif 375endif 376 377ifeq ($(KBUILD_EXTMOD),) 378 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 379 config-targets := 1 380 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 381 mixed-targets := 1 382 endif 383 endif 384endif 385 386ifeq ($(mixed-targets),1) 387# =========================================================================== 388# We're called with mixed targets (*config and build targets). 389# Handle them one by one. 390 391%:: FORCE 392 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ 393 394else 395ifeq ($(config-targets),1) 396# =========================================================================== 397# *config targets only - make sure prerequisites are updated, and descend 398# in scripts/kconfig to make the *config target 399 400# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 401# KBUILD_DEFCONFIG may point out an alternative default configuration 402# used for 'make defconfig' 403include $(srctree)/arch/$(ARCH)/Makefile 404export KBUILD_DEFCONFIG 405 406config %config: scripts_basic outputmakefile FORCE 407 $(Q)mkdir -p include/linux 408 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 409 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease 410 411else 412# =========================================================================== 413# Build targets only - this includes vmlinux, arch specific targets, clean 414# targets and others. In general all targets except *config targets. 415 416ifeq ($(KBUILD_EXTMOD),) 417# Additional helpers built in scripts/ 418# Carefully list dependencies so we do not try to build scripts twice 419# in parrallel 420PHONY += scripts 421scripts: scripts_basic include/config/MARKER 422 $(Q)$(MAKE) $(build)=$(@) 423 424scripts_basic: include/linux/autoconf.h 425 426# Objects we will link into vmlinux / subdirs we need to visit 427init-y := init/ 428drivers-y := drivers/ sound/ 429net-y := net/ 430libs-y := lib/ 431core-y := usr/ 432endif # KBUILD_EXTMOD 433 434ifeq ($(dot-config),1) 435# In this section, we need .config 436 437# Read in dependencies to all Kconfig* files, make sure to run 438# oldconfig if changes are detected. 439-include .kconfig.d 440 441include .config 442 443# If .config needs to be updated, it will be done via the dependency 444# that autoconf has on .config. 445# To avoid any implicit rule to kick in, define an empty command 446.config .kconfig.d: ; 447 448# If .config is newer than include/linux/autoconf.h, someone tinkered 449# with it and forgot to run make oldconfig. 450# If kconfig.d is missing then we are probarly in a cleaned tree so 451# we execute the config step to be sure to catch updated Kconfig files 452include/linux/autoconf.h: .kconfig.d .config 453 $(Q)mkdir -p include/linux 454 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 455else 456# Dummy target needed, because used as prerequisite 457include/linux/autoconf.h: ; 458endif 459 460# The all: target is the default when no target is given on the 461# command line. 462# This allow a user to issue only 'make' to build a kernel including modules 463# Defaults vmlinux but it is usually overriden in the arch makefile 464all: vmlinux 465 466ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 467CFLAGS += -Os 468else 469CFLAGS += -O2 470endif 471 472ifdef CONFIG_FRAME_POINTER 473CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,) 474else 475CFLAGS += -fomit-frame-pointer 476endif 477 478ifdef CONFIG_UNWIND_INFO 479CFLAGS += -fasynchronous-unwind-tables 480endif 481 482ifdef CONFIG_DEBUG_INFO 483CFLAGS += -g 484endif 485 486include $(srctree)/arch/$(ARCH)/Makefile 487 488# arch Makefile may override CC so keep this after arch Makefile is included 489NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 490CHECKFLAGS += $(NOSTDINC_FLAGS) 491 492# warn about C99 declaration after statement 493CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 494 495# disable pointer signedness warnings in gcc 4.0 496CFLAGS += $(call cc-option,-Wno-pointer-sign,) 497 498# Default kernel image to build when no specific target is given. 499# KBUILD_IMAGE may be overruled on the commandline or 500# set in the environment 501# Also any assignments in arch/$(ARCH)/Makefile take precedence over 502# this default value 503export KBUILD_IMAGE ?= vmlinux 504 505# 506# INSTALL_PATH specifies where to place the updated kernel and system map 507# images. Default is /boot, but you can set it to other values 508export INSTALL_PATH ?= /boot 509 510# 511# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 512# relocations required by build roots. This is not defined in the 513# makefile but the arguement can be passed to make if needed. 514# 515 516MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 517export MODLIB 518 519 520ifeq ($(KBUILD_EXTMOD),) 521core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 522 523vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 524 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 525 $(net-y) $(net-m) $(libs-y) $(libs-m))) 526 527vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 528 $(init-n) $(init-) \ 529 $(core-n) $(core-) $(drivers-n) $(drivers-) \ 530 $(net-n) $(net-) $(libs-n) $(libs-)))) 531 532init-y := $(patsubst %/, %/built-in.o, $(init-y)) 533core-y := $(patsubst %/, %/built-in.o, $(core-y)) 534drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 535net-y := $(patsubst %/, %/built-in.o, $(net-y)) 536libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 537libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 538libs-y := $(libs-y1) $(libs-y2) 539 540# Build vmlinux 541# --------------------------------------------------------------------------- 542# vmlinux is build from the objects selected by $(vmlinux-init) and 543# $(vmlinux-main). Most are built-in.o files from top-level directories 544# in the kernel tree, others are specified in arch/$(ARCH)Makefile. 545# Ordering when linking is important, and $(vmlinux-init) must be first. 546# 547# vmlinux 548# ^ 549# | 550# +-< $(vmlinux-init) 551# | +--< init/version.o + more 552# | 553# +--< $(vmlinux-main) 554# | +--< driver/built-in.o mm/built-in.o + more 555# | 556# +-< kallsyms.o (see description in CONFIG_KALLSYMS section) 557# 558# vmlinux version (uname -v) cannot be updated during normal 559# descending-into-subdirs phase since we do not yet know if we need to 560# update vmlinux. 561# Therefore this step is delayed until just before final link of vmlinux - 562# except in the kallsyms case where it is done just before adding the 563# symbols to the kernel. 564# 565# System.map is generated to document addresses of all kernel symbols 566 567vmlinux-init := $(head-y) $(init-y) 568vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) 569vmlinux-all := $(vmlinux-init) $(vmlinux-main) 570vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds 571 572# Rule to link vmlinux - also used during CONFIG_KALLSYMS 573# May be overridden by arch/$(ARCH)/Makefile 574quiet_cmd_vmlinux__ ?= LD $@ 575 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ 576 -T $(vmlinux-lds) $(vmlinux-init) \ 577 --start-group $(vmlinux-main) --end-group \ 578 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^) 579 580# Generate new vmlinux version 581quiet_cmd_vmlinux_version = GEN .version 582 cmd_vmlinux_version = set -e; \ 583 if [ ! -r .version ]; then \ 584 rm -f .version; \ 585 echo 1 >.version; \ 586 else \ 587 mv .version .old_version; \ 588 expr 0$$(cat .old_version) + 1 >.version; \ 589 fi; \ 590 $(MAKE) $(build)=init 591 592# Generate System.map 593quiet_cmd_sysmap = SYSMAP 594 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap 595 596# Link of vmlinux 597# If CONFIG_KALLSYMS is set .version is already updated 598# Generate System.map and verify that the content is consistent 599# Use + in front of the vmlinux_version rule to silent warning with make -j2 600# First command is ':' to allow us to use + in front of the rule 601define rule_vmlinux__ 602 : 603 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) 604 605 $(call cmd,vmlinux__) 606 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 607 608 $(Q)$(if $($(quiet)cmd_sysmap), \ 609 echo ' $($(quiet)cmd_sysmap) System.map' &&) \ 610 $(cmd_sysmap) $@ System.map; \ 611 if [ $$? -ne 0 ]; then \ 612 rm -f $@; \ 613 /bin/false; \ 614 fi; 615 $(verify_kallsyms) 616endef 617 618 619ifdef CONFIG_KALLSYMS 620# Generate section listing all symbols and add it into vmlinux $(kallsyms.o) 621# It's a three stage process: 622# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is 623# empty 624# Running kallsyms on that gives us .tmp_kallsyms1.o with 625# the right size - vmlinux version (uname -v) is updated during this step 626# o .tmp_vmlinux2 now has a __kallsyms section of the right size, 627# but due to the added section, some addresses have shifted. 628# From here, we generate a correct .tmp_kallsyms2.o 629# o The correct .tmp_kallsyms2.o is linked into the final vmlinux. 630# o Verify that the System.map from vmlinux matches the map from 631# .tmp_vmlinux2, just in case we did not generate kallsyms correctly. 632# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using 633# .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a 634# temporary bypass to allow the kernel to be built while the 635# maintainers work out what went wrong with kallsyms. 636 637ifdef CONFIG_KALLSYMS_EXTRA_PASS 638last_kallsyms := 3 639else 640last_kallsyms := 2 641endif 642 643kallsyms.o := .tmp_kallsyms$(last_kallsyms).o 644 645define verify_kallsyms 646 $(Q)$(if $($(quiet)cmd_sysmap), \ 647 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ 648 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map 649 $(Q)cmp -s System.map .tmp_System.map || \ 650 (echo Inconsistent kallsyms data; \ 651 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ 652 rm .tmp_kallsyms* ; /bin/false ) 653endef 654 655# Update vmlinux version before link 656# Use + in front of this rule to silent warning about make -j1 657# First command is ':' to allow us to use + in front of this rule 658cmd_ksym_ld = $(cmd_vmlinux__) 659define rule_ksym_ld 660 : 661 +$(call cmd,vmlinux_version) 662 $(call cmd,vmlinux__) 663 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 664endef 665 666# Generate .S file with all kernel symbols 667quiet_cmd_kallsyms = KSYM $@ 668 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ 669 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ 670 671.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE 672 $(call if_changed_dep,as_o_S) 673 674.tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) 675 $(call cmd,kallsyms) 676 677# .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version 678.tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE 679 $(call if_changed_rule,ksym_ld) 680 681.tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE 682 $(call if_changed,vmlinux__) 683 684.tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE 685 $(call if_changed,vmlinux__) 686 687# Needs to visit scripts/ before $(KALLSYMS) can be used. 688$(KALLSYMS): scripts ; 689 690# Generate some data for debugging strange kallsyms problems 691debug_kallsyms: .tmp_map$(last_kallsyms) 692 693.tmp_map%: .tmp_vmlinux% FORCE 694 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ 695 696.tmp_map3: .tmp_map2 697 698.tmp_map2: .tmp_map1 699 700endif # ifdef CONFIG_KALLSYMS 701 702# vmlinux image - including updated kernel symbols 703vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE 704 $(call if_changed_rule,vmlinux__) 705 $(Q)rm -f .old_version 706 707# The actual objects are generated when descending, 708# make sure no implicit rule kicks in 709$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; 710 711# Handle descending into subdirectories listed in $(vmlinux-dirs) 712# Preset locale variables to speed up the build process. Limit locale 713# tweaks to this spot to avoid wrong language settings when running 714# make menuconfig etc. 715# Error messages still appears in the original language 716 717PHONY += $(vmlinux-dirs) 718$(vmlinux-dirs): prepare scripts 719 $(Q)$(MAKE) $(build)=$@ 720 721# Build the kernel release string 722# The KERNELRELEASE is stored in a file named .kernelrelease 723# to be used when executing for example make install or make modules_install 724# 725# Take the contents of any files called localversion* and the config 726# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. 727# LOCALVERSION from the command line override all of this 728 729nullstring := 730space := $(nullstring) # end of line 731 732___localver = $(objtree)/localversion* $(srctree)/localversion* 733__localver = $(sort $(wildcard $(___localver))) 734# skip backup files (containing '~') 735_localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f))) 736 737localver = $(subst $(space),, \ 738 $(shell cat /dev/null $(_localver)) \ 739 $(patsubst "%",%,$(CONFIG_LOCALVERSION))) 740 741# If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called 742# and if the SCM is know a tag from the SCM is appended. 743# The appended tag is determinded by the SCM used. 744# 745# Currently, only git is supported. 746# Other SCMs can edit scripts/setlocalversion and add the appropriate 747# checks as needed. 748ifdef CONFIG_LOCALVERSION_AUTO 749 _localver-auto = $(shell $(CONFIG_SHELL) \ 750 $(srctree)/scripts/setlocalversion $(srctree)) 751 localver-auto = $(LOCALVERSION)$(_localver-auto) 752endif 753 754localver-full = $(localver)$(localver-auto) 755 756# Store (new) KERNELRELASE string in .kernelrelease 757kernelrelease = $(KERNELVERSION)$(localver-full) 758.kernelrelease: FORCE 759 $(Q)rm -f $@ 760 $(Q)echo $(kernelrelease) > $@ 761 762 763# Things we need to do before we recursively start building the kernel 764# or the modules are listed in "prepare". 765# A multi level approach is used. prepareN is processed before prepareN-1. 766# archprepare is used in arch Makefiles and when processed asm symlink, 767# version.h and scripts_basic is processed / created. 768 769# Listed in dependency order 770PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 771 772# prepare-all is deprecated, use prepare as valid replacement 773PHONY += prepare-all 774 775# prepare3 is used to check if we are building in a separate output directory, 776# and if so do: 777# 1) Check that make has not been executed in the kernel src $(srctree) 778# 2) Create the include2 directory, used for the second asm symlink 779prepare3: .kernelrelease 780ifneq ($(KBUILD_SRC),) 781 @echo ' Using $(srctree) as source for kernel' 782 $(Q)if [ -f $(srctree)/.config ]; then \ 783 echo " $(srctree) is not clean, please run 'make mrproper'";\ 784 echo " in the '$(srctree)' directory.";\ 785 /bin/false; \ 786 fi; 787 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; 788 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm 789endif 790 791# prepare2 creates a makefile if using a separate output directory 792prepare2: prepare3 outputmakefile 793 794prepare1: prepare2 include/linux/version.h include/asm \ 795 include/config/MARKER 796ifneq ($(KBUILD_MODULES),) 797 $(Q)mkdir -p $(MODVERDIR) 798 $(Q)rm -f $(MODVERDIR)/* 799endif 800 801archprepare: prepare1 scripts_basic 802 803prepare0: archprepare FORCE 804 $(Q)$(MAKE) $(build)=. 805 806# All the preparing.. 807prepare prepare-all: prepare0 808 809# Leave this as default for preprocessing vmlinux.lds.S, which is now 810# done in arch/$(ARCH)/kernel/Makefile 811 812export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) 813 814# FIXME: The asm symlink changes when $(ARCH) changes. That's 815# hard to detect, but I suppose "make mrproper" is a good idea 816# before switching between archs anyway. 817 818include/asm: 819 @echo ' SYMLINK $@ -> include/asm-$(ARCH)' 820 $(Q)if [ ! -d include ]; then mkdir -p include; fi; 821 @ln -fsn asm-$(ARCH) $@ 822 823# Split autoconf.h into include/linux/config/* 824 825include/config/MARKER: scripts/basic/split-include include/linux/autoconf.h 826 @echo ' SPLIT include/linux/autoconf.h -> include/config/*' 827 @scripts/basic/split-include include/linux/autoconf.h include/config 828 @touch $@ 829 830# Generate some files 831# --------------------------------------------------------------------------- 832 833# KERNELRELEASE can change from a few different places, meaning version.h 834# needs to be updated, so this check is forced on all builds 835 836uts_len := 64 837 838define filechk_version.h 839 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 840 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 841 exit 1; \ 842 fi; \ 843 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \ 844 echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \ 845 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \ 846 ) 847endef 848 849include/linux/version.h: $(srctree)/Makefile .config .kernelrelease FORCE 850 $(call filechk,version.h) 851 852# --------------------------------------------------------------------------- 853 854PHONY += depend dep 855depend dep: 856 @echo '*** Warning: make $@ is unnecessary now.' 857 858# --------------------------------------------------------------------------- 859# Modules 860 861ifdef CONFIG_MODULES 862 863# By default, build modules as well 864 865all: modules 866 867# Build modules 868 869PHONY += modules 870modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) 871 @echo ' Building modules, stage 2.'; 872 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 873 874 875# Target to prepare building external modules 876PHONY += modules_prepare 877modules_prepare: prepare scripts 878 879# Target to install modules 880PHONY += modules_install 881modules_install: _modinst_ _modinst_post 882 883PHONY += _modinst_ 884_modinst_: 885 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ 886 echo "Warning: you may need to install module-init-tools"; \ 887 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ 888 sleep 1; \ 889 fi 890 @rm -rf $(MODLIB)/kernel 891 @rm -f $(MODLIB)/source 892 @mkdir -p $(MODLIB)/kernel 893 @ln -s $(srctree) $(MODLIB)/source 894 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 895 rm -f $(MODLIB)/build ; \ 896 ln -s $(objtree) $(MODLIB)/build ; \ 897 fi 898 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst 899 900# If System.map exists, run depmod. This deliberately does not have a 901# dependency on System.map since that would run the dependency tree on 902# vmlinux. This depmod is only for convenience to give the initial 903# boot a modules.dep even before / is mounted read-write. However the 904# boot script depmod is the master version. 905ifeq "$(strip $(INSTALL_MOD_PATH))" "" 906depmod_opts := 907else 908depmod_opts := -b $(INSTALL_MOD_PATH) -r 909endif 910PHONY += _modinst_post 911_modinst_post: _modinst_ 912 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi 913 914else # CONFIG_MODULES 915 916# Modules not configured 917# --------------------------------------------------------------------------- 918 919modules modules_install: FORCE 920 @echo 921 @echo "The present kernel configuration has modules disabled." 922 @echo "Type 'make config' and enable loadable module support." 923 @echo "Then build a kernel with module support enabled." 924 @echo 925 @exit 1 926 927endif # CONFIG_MODULES 928 929### 930# Cleaning is done on three levels. 931# make clean Delete most generated files 932# Leave enough to build external modules 933# make mrproper Delete the current configuration, and all generated files 934# make distclean Remove editor backup files, patch leftover files and the like 935 936# Directories & files removed with 'make clean' 937CLEAN_DIRS += $(MODVERDIR) 938CLEAN_FILES += vmlinux System.map \ 939 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map 940 941# Directories & files removed with 'make mrproper' 942MRPROPER_DIRS += include/config include2 943MRPROPER_FILES += .config .config.old include/asm .version .old_version \ 944 include/linux/autoconf.h include/linux/version.h \ 945 .kernelrelease Module.symvers tags TAGS cscope* 946 947# clean - Delete most, but leave enough to build external modules 948# 949clean: rm-dirs := $(CLEAN_DIRS) 950clean: rm-files := $(CLEAN_FILES) 951clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs)) 952 953PHONY += $(clean-dirs) clean archclean 954$(clean-dirs): 955 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 956 957clean: archclean $(clean-dirs) 958 $(call cmd,rmdirs) 959 $(call cmd,rmfiles) 960 @find . $(RCS_FIND_IGNORE) \ 961 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 962 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ 963 -type f -print | xargs rm -f 964 965# mrproper - Delete all generated files, including .config 966# 967mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 968mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 969mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 970 971PHONY += $(mrproper-dirs) mrproper archmrproper 972$(mrproper-dirs): 973 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 974 975mrproper: clean archmrproper $(mrproper-dirs) 976 $(call cmd,rmdirs) 977 $(call cmd,rmfiles) 978 979# distclean 980# 981PHONY += distclean 982 983distclean: mrproper 984 @find $(srctree) $(RCS_FIND_IGNORE) \ 985 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 986 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 987 -o -name '.*.rej' -o -size 0 \ 988 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ 989 -type f -print | xargs rm -f 990 991 992# Packaging of the kernel to various formats 993# --------------------------------------------------------------------------- 994# rpm target kept for backward compatibility 995package-dir := $(srctree)/scripts/package 996 997%pkg: FORCE 998 $(Q)$(MAKE) $(build)=$(package-dir) $@ 999rpm: FORCE 1000 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1001 1002 1003# Brief documentation of the typical targets used 1004# --------------------------------------------------------------------------- 1005 1006boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) 1007boards := $(notdir $(boards)) 1008 1009help: 1010 @echo 'Cleaning targets:' 1011 @echo ' clean - remove most generated files but keep the config' 1012 @echo ' mrproper - remove all generated files + config + various backup files' 1013 @echo '' 1014 @echo 'Configuration targets:' 1015 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1016 @echo '' 1017 @echo 'Other generic targets:' 1018 @echo ' all - Build all targets marked with [*]' 1019 @echo '* vmlinux - Build the bare kernel' 1020 @echo '* modules - Build all modules' 1021 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1022 @echo ' dir/ - Build all files in dir and below' 1023 @echo ' dir/file.[ois] - Build specified target only' 1024 @echo ' dir/file.ko - Build module including final link' 1025 @echo ' rpm - Build a kernel as an RPM package' 1026 @echo ' tags/TAGS - Generate tags file for editors' 1027 @echo ' cscope - Generate cscope index' 1028 @echo ' kernelrelease - Output the release version string' 1029 @echo ' kernelversion - Output the version stored in Makefile' 1030 @echo '' 1031 @echo 'Static analysers' 1032 @echo ' checkstack - Generate a list of stack hogs' 1033 @echo ' namespacecheck - Name space analysis on compiled kernel' 1034 @echo '' 1035 @echo 'Kernel packaging:' 1036 @$(MAKE) $(build)=$(package-dir) help 1037 @echo '' 1038 @echo 'Documentation targets:' 1039 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1040 @echo '' 1041 @echo 'Architecture specific targets ($(ARCH)):' 1042 @$(if $(archhelp),$(archhelp),\ 1043 echo ' No architecture specific help defined for $(ARCH)') 1044 @echo '' 1045 @$(if $(boards), \ 1046 $(foreach b, $(boards), \ 1047 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1048 echo '') 1049 1050 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1051 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1052 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse)' 1053 @echo ' make C=2 [targets] Force check of all c source with $$CHECK (sparse)' 1054 @echo '' 1055 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1056 @echo 'For further info see the ./README file' 1057 1058 1059# Documentation targets 1060# --------------------------------------------------------------------------- 1061%docs: scripts_basic FORCE 1062 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1063 1064else # KBUILD_EXTMOD 1065 1066### 1067# External module support. 1068# When building external modules the kernel used as basis is considered 1069# read-only, and no consistency checks are made and the make 1070# system is not used on the basis kernel. If updates are required 1071# in the basis kernel ordinary make commands (without M=...) must 1072# be used. 1073# 1074# The following are the only valid targets when building external 1075# modules. 1076# make M=dir clean Delete all automatically generated files 1077# make M=dir modules Make all modules in specified dir 1078# make M=dir Same as 'make M=dir modules' 1079# make M=dir modules_install 1080# Install the modules build in the module directory 1081# Assumes install directory is already created 1082 1083# We are always building modules 1084KBUILD_MODULES := 1 1085PHONY += crmodverdir 1086crmodverdir: 1087 $(Q)mkdir -p $(MODVERDIR) 1088 $(Q)rm -f $(MODVERDIR)/* 1089 1090PHONY += $(objtree)/Module.symvers 1091$(objtree)/Module.symvers: 1092 @test -e $(objtree)/Module.symvers || ( \ 1093 echo; \ 1094 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1095 echo " is missing; modules will have no dependencies and modversions."; \ 1096 echo ) 1097 1098module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1099PHONY += $(module-dirs) modules 1100$(module-dirs): crmodverdir $(objtree)/Module.symvers 1101 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1102 1103modules: $(module-dirs) 1104 @echo ' Building modules, stage 2.'; 1105 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 1106 1107PHONY += modules_install 1108modules_install: _emodinst_ _emodinst_post 1109 1110install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1111PHONY += _emodinst_ 1112_emodinst_: 1113 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1114 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst 1115 1116# Run depmod only is we have System.map and depmod is executable 1117quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1118 cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \ 1119 $(DEPMOD) -ae -F System.map \ 1120 $(if $(strip $(INSTALL_MOD_PATH)), \ 1121 -b $(INSTALL_MOD_PATH) -r) \ 1122 $(KERNELRELEASE); \ 1123 fi 1124 1125PHONY += _emodinst_post 1126_emodinst_post: _emodinst_ 1127 $(call cmd,depmod) 1128 1129clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1130 1131PHONY += $(clean-dirs) clean 1132$(clean-dirs): 1133 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1134 1135clean: rm-dirs := $(MODVERDIR) 1136clean: $(clean-dirs) 1137 $(call cmd,rmdirs) 1138 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ 1139 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1140 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ 1141 -type f -print | xargs rm -f 1142 1143help: 1144 @echo ' Building external modules.' 1145 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1146 @echo '' 1147 @echo ' modules - default target, build the module(s)' 1148 @echo ' modules_install - install the module' 1149 @echo ' clean - remove generated files in module directory only' 1150 @echo '' 1151 1152# Dummies... 1153PHONY += prepare scripts 1154prepare: ; 1155scripts: ; 1156endif # KBUILD_EXTMOD 1157 1158# Generate tags for editors 1159# --------------------------------------------------------------------------- 1160 1161#We want __srctree to totally vanish out when KBUILD_OUTPUT is not set 1162#(which is the most common case IMHO) to avoid unneeded clutter in the big tags file. 1163#Adding $(srctree) adds about 20M on i386 to the size of the output file! 1164 1165ifeq ($(src),$(obj)) 1166__srctree = 1167else 1168__srctree = $(srctree)/ 1169endif 1170 1171ifeq ($(ALLSOURCE_ARCHS),) 1172ifeq ($(ARCH),um) 1173ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH) 1174else 1175ALLINCLUDE_ARCHS := $(ARCH) 1176endif 1177else 1178#Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour. 1179ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS) 1180endif 1181 1182ALLSOURCE_ARCHS := $(ARCH) 1183 1184define all-sources 1185 ( find $(__srctree) $(RCS_FIND_IGNORE) \ 1186 \( -name include -o -name arch \) -prune -o \ 1187 -name '*.[chS]' -print; \ 1188 for ARCH in $(ALLSOURCE_ARCHS) ; do \ 1189 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \ 1190 -name '*.[chS]' -print; \ 1191 done ; \ 1192 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \ 1193 -name '*.[chS]' -print; \ 1194 find $(__srctree)include $(RCS_FIND_IGNORE) \ 1195 \( -name config -o -name 'asm-*' \) -prune \ 1196 -o -name '*.[chS]' -print; \ 1197 for ARCH in $(ALLINCLUDE_ARCHS) ; do \ 1198 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \ 1199 -name '*.[chS]' -print; \ 1200 done ; \ 1201 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ 1202 -name '*.[chS]' -print ) 1203endef 1204 1205quiet_cmd_cscope-file = FILELST cscope.files 1206 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files 1207 1208quiet_cmd_cscope = MAKE cscope.out 1209 cmd_cscope = cscope -b 1210 1211cscope: FORCE 1212 $(call cmd,cscope-file) 1213 $(call cmd,cscope) 1214 1215quiet_cmd_TAGS = MAKE $@ 1216define cmd_TAGS 1217 rm -f $@; \ 1218 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \ 1219 echo "-I __initdata,__exitdata,__acquires,__releases \ 1220 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ 1221 --extra=+f --c-kinds=+px"`; \ 1222 $(all-sources) | xargs etags $$ETAGSF -a 1223endef 1224 1225TAGS: FORCE 1226 $(call cmd,TAGS) 1227 1228 1229quiet_cmd_tags = MAKE $@ 1230define cmd_tags 1231 rm -f $@; \ 1232 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \ 1233 echo "-I __initdata,__exitdata,__acquires,__releases \ 1234 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ 1235 --extra=+f --c-kinds=+px"`; \ 1236 $(all-sources) | xargs ctags $$CTAGSF -a 1237endef 1238 1239tags: FORCE 1240 $(call cmd,tags) 1241 1242 1243# Scripts to check various things for consistency 1244# --------------------------------------------------------------------------- 1245 1246includecheck: 1247 find * $(RCS_FIND_IGNORE) \ 1248 -name '*.[hcS]' -type f -print | sort \ 1249 | xargs $(PERL) -w scripts/checkincludes.pl 1250 1251versioncheck: 1252 find * $(RCS_FIND_IGNORE) \ 1253 -name '*.[hcS]' -type f -print | sort \ 1254 | xargs $(PERL) -w scripts/checkversion.pl 1255 1256namespacecheck: 1257 $(PERL) $(srctree)/scripts/namespace.pl 1258 1259endif #ifeq ($(config-targets),1) 1260endif #ifeq ($(mixed-targets),1) 1261 1262PHONY += checkstack 1263checkstack: 1264 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1265 $(PERL) $(src)/scripts/checkstack.pl $(ARCH) 1266 1267kernelrelease: 1268 $(if $(wildcard .kernelrelease), $(Q)echo $(KERNELRELEASE), \ 1269 $(error kernelrelease not valid - run 'make *config' to update it)) 1270kernelversion: 1271 @echo $(KERNELVERSION) 1272 1273# Single targets 1274# --------------------------------------------------------------------------- 1275# Single targets are compatible with: 1276# - build whith mixed source and output 1277# - build with separate output dir 'make O=...' 1278# - external modules 1279# 1280# target-dir => where to store outputfile 1281# build-dir => directory in kernel source tree to use 1282 1283ifeq ($(KBUILD_EXTMOD),) 1284 build-dir = $(patsubst %/,%,$(dir $@)) 1285 target-dir = $(dir $@) 1286else 1287 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1288 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1289 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1290endif 1291 1292%.s: %.c prepare scripts FORCE 1293 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1294%.i: %.c prepare scripts FORCE 1295 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1296%.o: %.c prepare scripts FORCE 1297 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1298%.lst: %.c prepare scripts FORCE 1299 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1300%.s: %.S prepare scripts FORCE 1301 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1302%.o: %.S prepare scripts FORCE 1303 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1304 1305# Modules 1306/ %/: prepare scripts FORCE 1307 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1308 $(build)=$(build-dir) 1309%.ko: prepare scripts FORCE 1310 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1311 $(build)=$(build-dir) $(@:.ko=.o) 1312 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 1313 1314# FIXME Should go into a make.lib or something 1315# =========================================================================== 1316 1317quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1318 cmd_rmdirs = rm -rf $(rm-dirs) 1319 1320quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1321 cmd_rmfiles = rm -f $(rm-files) 1322 1323 1324a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \ 1325 $(NOSTDINC_FLAGS) $(CPPFLAGS) \ 1326 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o) 1327 1328quiet_cmd_as_o_S = AS $@ 1329cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< 1330 1331# read all saved command lines 1332 1333targets := $(wildcard $(sort $(targets))) 1334cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1335 1336ifneq ($(cmd_files),) 1337 $(cmd_files): ; # Do not try to update included dependency files 1338 include $(cmd_files) 1339endif 1340 1341# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir 1342# Usage: 1343# $(Q)$(MAKE) $(clean)=dir 1344clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj 1345 1346endif # skip-makefile 1347 1348PHONY += FORCE 1349FORCE: 1350 1351 1352# Declare the contents of the .PHONY variable as phony. We keep that 1353# information in a variable se we can use it in if_changed and friends. 1354.PHONY: $(PHONY) 1355