1VERSION = 2 2PATCHLEVEL = 6 3SUBLEVEL = 18 4EXTRAVERSION = -prep 5RHEL_MAJOR = 5 6RHEL_MINOR = 1 7NAME=Avast! A bilge rat! 8 9# *DOCUMENTATION* 10# To see a list of typical targets execute "make help" 11# More info can be located in ./README 12# Comments in this file are targeted only to the developer, do not 13# expect to learn how to build the kernel reading this file. 14 15# Do not print "Entering directory ..." 16MAKEFLAGS += --no-print-directory 17 18# We are using a recursive build, so we need to do a little thinking 19# to get the ordering right. 20# 21# Most importantly: sub-Makefiles should only ever modify files in 22# their own directory. If in some directory we have a dependency on 23# a file in another dir (which doesn't happen often, but it's often 24# unavoidable when linking the built-in.o targets which finally 25# turn into vmlinux), we will call a sub make in that other dir, and 26# after that we are sure that everything which is in that other dir 27# is now up to date. 28# 29# The only cases where we need to modify files which have global 30# effects are thus separated out and done before the recursive 31# descending is started. They are now explicitly listed as the 32# prepare rule. 33 34# To put more focus on warnings, be less verbose as default 35# Use 'make V=1' to see the full commands 36 37ifdef V 38 ifeq ("$(origin V)", "command line") 39 KBUILD_VERBOSE = $(V) 40 endif 41endif 42ifndef KBUILD_VERBOSE 43 KBUILD_VERBOSE = 0 44endif 45 46# Call checker as part of compilation of C files 47# Use 'make C=1' to enable checking (sparse, by default) 48# Override with 'make C=1 CHECK=checker_executable CHECKFLAGS=....' 49 50ifdef C 51 ifeq ("$(origin C)", "command line") 52 KBUILD_CHECKSRC = $(C) 53 endif 54endif 55ifndef KBUILD_CHECKSRC 56 KBUILD_CHECKSRC = 0 57endif 58 59# Use make M=dir to specify directory of external module to build 60# Old syntax make ... SUBDIRS=$PWD is still supported 61# Setting the environment variable KBUILD_EXTMOD take precedence 62ifdef SUBDIRS 63 KBUILD_EXTMOD ?= $(SUBDIRS) 64endif 65ifdef M 66 ifeq ("$(origin M)", "command line") 67 KBUILD_EXTMOD := $(M) 68 endif 69endif 70 71 72# kbuild supports saving output files in a separate directory. 73# To locate output files in a separate directory two syntaxes are supported. 74# In both cases the working directory must be the root of the kernel src. 75# 1) O= 76# Use "make O=dir/to/store/output/files/" 77# 78# 2) Set KBUILD_OUTPUT 79# Set the environment variable KBUILD_OUTPUT to point to the directory 80# where the output files shall be placed. 81# export KBUILD_OUTPUT=dir/to/store/output/files/ 82# make 83# 84# The O= assignment takes precedence over the KBUILD_OUTPUT environment 85# variable. 86 87 88# KBUILD_SRC is set on invocation of make in OBJ directory 89# KBUILD_SRC is not intended to be used by the regular user (for now) 90ifeq ($(KBUILD_SRC),) 91 92# OK, Make called in directory where kernel src resides 93# Do we want to locate output files in a separate directory? 94ifdef O 95 ifeq ("$(origin O)", "command line") 96 KBUILD_OUTPUT := $(O) 97 endif 98endif 99 100# That's our default target when none is given on the command line 101PHONY := _all 102_all: 103 104ifneq ($(KBUILD_OUTPUT),) 105# Invoke a second make in the output directory, passing relevant variables 106# check that the output directory actually exists 107saved-output := $(KBUILD_OUTPUT) 108KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) 109$(if $(KBUILD_OUTPUT),, \ 110 $(error output directory "$(saved-output)" does not exist)) 111 112PHONY += $(MAKECMDGOALS) 113 114$(filter-out _all,$(MAKECMDGOALS)) _all: 115 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ 116 KBUILD_SRC=$(CURDIR) \ 117 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@ 118 119# Leave processing to above invocation of make 120skip-makefile := 1 121endif # ifneq ($(KBUILD_OUTPUT),) 122endif # ifeq ($(KBUILD_SRC),) 123 124# We process the rest of the Makefile if this is the final invocation of make 125ifeq ($(skip-makefile),) 126 127# If building an external module we do not care about the all: rule 128# but instead _all depend on modules 129PHONY += all 130ifeq ($(KBUILD_EXTMOD),) 131_all: all 132else 133_all: modules 134endif 135 136srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) 137TOPDIR := $(srctree) 138# FIXME - TOPDIR is obsolete, use srctree/objtree 139objtree := $(CURDIR) 140src := $(srctree) 141obj := $(objtree) 142 143VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 144 145export srctree objtree VPATH TOPDIR 146 147 148# SUBARCH tells the usermode build what the underlying arch is. That is set 149# first, and if a usermode build is happening, the "ARCH=um" on the command 150# line overrides the setting of ARCH below. If a native build is happening, 151# then ARCH is assigned, getting whatever value it gets normally, and 152# SUBARCH is subsequently ignored. 153 154SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ 155 -e s/arm.*/arm/ -e s/sa110/arm/ \ 156 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 157 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ ) 158 159# Cross compiling and selecting different set of gcc/bin-utils 160# --------------------------------------------------------------------------- 161# 162# When performing cross compilation for other architectures ARCH shall be set 163# to the target architecture. (See arch/* for the possibilities). 164# ARCH can be set during invocation of make: 165# make ARCH=ia64 166# Another way is to have ARCH set in the environment. 167# The default ARCH is the host where make is executed. 168 169# CROSS_COMPILE specify the prefix used for all executables used 170# during compilation. Only gcc and related bin-utils executables 171# are prefixed with $(CROSS_COMPILE). 172# CROSS_COMPILE can be set on the command line 173# make CROSS_COMPILE=ia64-linux- 174# Alternatively CROSS_COMPILE can be set in the environment. 175# Default value for CROSS_COMPILE is not to prefix executables 176# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 177 178ARCH ?= $(SUBARCH) 179CROSS_COMPILE ?= 180 181# Architecture as present in compile.h 182UTS_MACHINE := $(ARCH) 183 184KCONFIG_CONFIG ?= .config 185 186# SHELL used by kbuild 187CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 188 else if [ -x /bin/bash ]; then echo /bin/bash; \ 189 else echo sh; fi ; fi) 190 191HOSTCC = gcc 192HOSTCXX = g++ 193HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer 194HOSTCXXFLAGS = -O2 195 196# Decide whether to build built-in, modular, or both. 197# Normally, just do built-in. 198 199KBUILD_MODULES := 200KBUILD_BUILTIN := 1 201 202# If we have only "make modules", don't compile built-in objects. 203# When we're building modules with modversions, we need to consider 204# the built-in objects during the descend as well, in order to 205# make sure the checksums are up to date before we record them. 206 207ifeq ($(MAKECMDGOALS),modules) 208 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 209endif 210 211# If we have "make <whatever> modules", compile modules 212# in addition to whatever we do anyway. 213# Just "make" or "make all" shall build modules as well 214 215ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 216 KBUILD_MODULES := 1 217endif 218 219ifeq ($(MAKECMDGOALS),) 220 KBUILD_MODULES := 1 221endif 222 223export KBUILD_MODULES KBUILD_BUILTIN 224export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 225 226# Beautify output 227# --------------------------------------------------------------------------- 228# 229# Normally, we echo the whole command before executing it. By making 230# that echo $($(quiet)$(cmd)), we now have the possibility to set 231# $(quiet) to choose other forms of output instead, e.g. 232# 233# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 234# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 235# 236# If $(quiet) is empty, the whole command will be printed. 237# If it is set to "quiet_", only the short version will be printed. 238# If it is set to "silent_", nothing will be printed at all, since 239# the variable $(silent_cmd_cc_o_c) doesn't exist. 240# 241# A simple variant is to prefix commands with $(Q) - that's useful 242# for commands that shall be hidden in non-verbose mode. 243# 244# $(Q)ln $@ :< 245# 246# If KBUILD_VERBOSE equals 0 then the above command will be hidden. 247# If KBUILD_VERBOSE equals 1 then the above command is displayed. 248 249ifeq ($(KBUILD_VERBOSE),1) 250 quiet = 251 Q = 252else 253 quiet=quiet_ 254 Q = @ 255endif 256 257# If the user is running make -s (silent mode), suppress echoing of 258# commands 259 260ifneq ($(findstring s,$(MAKEFLAGS)),) 261 quiet=silent_ 262endif 263 264export quiet Q KBUILD_VERBOSE 265 266 267# Look for make include files relative to root of kernel src 268MAKEFLAGS += --include-dir=$(srctree) 269 270# We need some generic definitions 271include $(srctree)/scripts/Kbuild.include 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 -Wstrict-prototypes -Wundef -Werror-implicit-function-declaration 310AFLAGS := -D__ASSEMBLY__ 311 312# Read KERNELRELEASE from include/config/kernel.release (if it exists) 313KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 314KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) 315 316export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 317export ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 318export CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE 319export 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) $(PATCHLEVEL) 354endif 355 356# To make sure we do not include .config for any of the *config targets 357# catch them early, and hand them over to scripts/kconfig/Makefile 358# It is allowed to specify more targets when calling make, including 359# mixing *config targets and build targets. 360# For example 'make oldconfig all'. 361# Detect when mixed targets is specified, and make a second invocation 362# of make so .config is not included in this case either (for *config). 363 364no-dot-config-targets := clean mrproper distclean \ 365 cscope TAGS tags help %docs check% \ 366 include/linux/version.h headers_% \ 367 kernelrelease kernelversion 368 369config-targets := 0 370mixed-targets := 0 371dot-config := 1 372 373ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 374 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 375 dot-config := 0 376 endif 377endif 378 379ifeq ($(KBUILD_EXTMOD),) 380 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 381 config-targets := 1 382 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 383 mixed-targets := 1 384 endif 385 endif 386endif 387 388ifeq ($(mixed-targets),1) 389# =========================================================================== 390# We're called with mixed targets (*config and build targets). 391# Handle them one by one. 392 393%:: FORCE 394 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ 395 396else 397ifeq ($(config-targets),1) 398# =========================================================================== 399# *config targets only - make sure prerequisites are updated, and descend 400# in scripts/kconfig to make the *config target 401 402# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 403# KBUILD_DEFCONFIG may point out an alternative default configuration 404# used for 'make defconfig' 405include $(srctree)/arch/$(ARCH)/Makefile 406export KBUILD_DEFCONFIG 407 408config %config: scripts_basic outputmakefile FORCE 409 $(Q)mkdir -p include/linux include/config 410 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 411 412else 413# =========================================================================== 414# Build targets only - this includes vmlinux, arch specific targets, clean 415# targets and others. In general all targets except *config targets. 416 417ifeq ($(KBUILD_EXTMOD),) 418# Additional helpers built in scripts/ 419# Carefully list dependencies so we do not try to build scripts twice 420# in parallel 421PHONY += scripts 422scripts: scripts_basic include/config/auto.conf 423 $(Q)$(MAKE) $(build)=$(@) 424 425# Objects we will link into vmlinux / subdirs we need to visit 426init-y := init/ 427drivers-y := drivers/ sound/ 428net-y := net/ 429libs-y := lib/ 430core-y := usr/ 431endif # KBUILD_EXTMOD 432 433ifeq ($(dot-config),1) 434# Read in config 435-include include/config/auto.conf 436 437ifeq ($(KBUILD_EXTMOD),) 438# Read in dependencies to all Kconfig* files, make sure to run 439# oldconfig if changes are detected. 440-include include/config/auto.conf.cmd 441 442# To avoid any implicit rule to kick in, define an empty command 443$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 444 445# If .config is newer than include/config/auto.conf, someone tinkered 446# with it and forgot to run make oldconfig. 447# if auto.conf.cmd is missing then we are probably in a cleaned tree so 448# we execute the config step to be sure to catch updated Kconfig files 449include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 450 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 451else 452# external modules needs include/linux/autoconf.h and include/config/auto.conf 453# but do not care if they are up-to-date. Use auto.conf to trigger the test 454PHONY += include/config/auto.conf 455 456include/config/auto.conf: 457 $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \ 458 echo; \ 459 echo " ERROR: Kernel configuration is invalid."; \ 460 echo " include/linux/autoconf.h or $@ are missing."; \ 461 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 462 echo; \ 463 /bin/false) 464 465endif # KBUILD_EXTMOD 466 467else 468# Dummy target needed, because used as prerequisite 469include/config/auto.conf: ; 470endif # $(dot-config) 471 472# The all: target is the default when no target is given on the 473# command line. 474# This allow a user to issue only 'make' to build a kernel including modules 475# Defaults vmlinux but it is usually overridden in the arch makefile 476all: vmlinux 477 478ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 479CFLAGS += -Os 480else 481CFLAGS += -O2 482endif 483 484include $(srctree)/arch/$(ARCH)/Makefile 485 486ifdef CONFIG_FRAME_POINTER 487CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,) 488else 489CFLAGS += -fomit-frame-pointer 490endif 491 492ifdef CONFIG_DEBUG_INFO 493CFLAGS += -g 494endif 495 496# Force gcc to behave correct even for buggy distributions 497CFLAGS += $(call cc-option, -fno-stack-protector) 498 499# arch Makefile may override CC so keep this after arch Makefile is included 500NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 501CHECKFLAGS += $(NOSTDINC_FLAGS) 502 503# warn about C99 declaration after statement 504CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 505 506# disable pointer signed / unsigned warnings in gcc 4.0 507CFLAGS += $(call cc-option,-Wno-pointer-sign,) 508 509# Default kernel image to build when no specific target is given. 510# KBUILD_IMAGE may be overruled on the command line or 511# set in the environment 512# Also any assignments in arch/$(ARCH)/Makefile take precedence over 513# this default value 514export KBUILD_IMAGE ?= vmlinux 515 516# 517# INSTALL_PATH specifies where to place the updated kernel and system map 518# images. Default is /boot, but you can set it to other values 519export INSTALL_PATH ?= /boot 520 521# 522# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 523# relocations required by build roots. This is not defined in the 524# makefile but the argument can be passed to make if needed. 525# 526 527MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 528export MODLIB 529 530# 531# INSTALL_MOD_STRIP, if defined, will cause modules to be 532# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 533# the default option --strip-debug will be used. Otherwise, 534# INSTALL_MOD_STRIP will used as the options to the strip command. 535 536ifdef INSTALL_MOD_STRIP 537ifeq ($(INSTALL_MOD_STRIP),1) 538mod_strip_cmd = $(STRIP) --strip-debug 539else 540mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 541endif # INSTALL_MOD_STRIP=1 542else 543mod_strip_cmd = true 544endif # INSTALL_MOD_STRIP 545export mod_strip_cmd 546 547 548ifeq ($(KBUILD_EXTMOD),) 549core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 550 551vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 552 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 553 $(net-y) $(net-m) $(libs-y) $(libs-m))) 554 555vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 556 $(init-n) $(init-) \ 557 $(core-n) $(core-) $(drivers-n) $(drivers-) \ 558 $(net-n) $(net-) $(libs-n) $(libs-)))) 559 560init-y := $(patsubst %/, %/built-in.o, $(init-y)) 561core-y := $(patsubst %/, %/built-in.o, $(core-y)) 562drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 563net-y := $(patsubst %/, %/built-in.o, $(net-y)) 564libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 565libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 566libs-y := $(libs-y1) $(libs-y2) 567 568# Build vmlinux 569# --------------------------------------------------------------------------- 570# vmlinux is built from the objects selected by $(vmlinux-init) and 571# $(vmlinux-main). Most are built-in.o files from top-level directories 572# in the kernel tree, others are specified in arch/$(ARCH)Makefile. 573# Ordering when linking is important, and $(vmlinux-init) must be first. 574# 575# vmlinux 576# ^ 577# | 578# +-< $(vmlinux-init) 579# | +--< init/version.o + more 580# | 581# +--< $(vmlinux-main) 582# | +--< driver/built-in.o mm/built-in.o + more 583# | 584# +-< kallsyms.o (see description in CONFIG_KALLSYMS section) 585# 586# vmlinux version (uname -v) cannot be updated during normal 587# descending-into-subdirs phase since we do not yet know if we need to 588# update vmlinux. 589# Therefore this step is delayed until just before final link of vmlinux - 590# except in the kallsyms case where it is done just before adding the 591# symbols to the kernel. 592# 593# System.map is generated to document addresses of all kernel symbols 594 595vmlinux-init := $(head-y) $(init-y) 596vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) 597vmlinux-all := $(vmlinux-init) $(vmlinux-main) 598vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds 599 600# Rule to link vmlinux - also used during CONFIG_KALLSYMS 601# May be overridden by arch/$(ARCH)/Makefile 602quiet_cmd_vmlinux__ ?= LD $@ 603 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ 604 -T $(vmlinux-lds) $(vmlinux-init) \ 605 --start-group $(vmlinux-main) --end-group \ 606 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^) 607 608# Generate new vmlinux version 609quiet_cmd_vmlinux_version = GEN .version 610 cmd_vmlinux_version = set -e; \ 611 if [ ! -r .version ]; then \ 612 rm -f .version; \ 613 echo 1 >.version; \ 614 else \ 615 mv .version .old_version; \ 616 expr 0$$(cat .old_version) + 1 >.version; \ 617 fi; \ 618 $(MAKE) $(build)=init 619 620# Generate System.map 621quiet_cmd_sysmap = SYSMAP 622 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap 623 624# Link of vmlinux 625# If CONFIG_KALLSYMS is set .version is already updated 626# Generate System.map and verify that the content is consistent 627# Use + in front of the vmlinux_version rule to silent warning with make -j2 628# First command is ':' to allow us to use + in front of the rule 629define rule_vmlinux__ 630 : 631 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) 632 633 $(call cmd,vmlinux__) 634 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 635 636 $(Q)$(if $($(quiet)cmd_sysmap), \ 637 echo ' $($(quiet)cmd_sysmap) System.map' &&) \ 638 $(cmd_sysmap) $@ System.map; \ 639 if [ $$? -ne 0 ]; then \ 640 rm -f $@; \ 641 /bin/false; \ 642 fi; 643 $(verify_kallsyms) 644endef 645 646 647ifdef CONFIG_KALLSYMS 648# Generate section listing all symbols and add it into vmlinux $(kallsyms.o) 649# It's a three stage process: 650# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is 651# empty 652# Running kallsyms on that gives us .tmp_kallsyms1.o with 653# the right size - vmlinux version (uname -v) is updated during this step 654# o .tmp_vmlinux2 now has a __kallsyms section of the right size, 655# but due to the added section, some addresses have shifted. 656# From here, we generate a correct .tmp_kallsyms2.o 657# o The correct .tmp_kallsyms2.o is linked into the final vmlinux. 658# o Verify that the System.map from vmlinux matches the map from 659# .tmp_vmlinux2, just in case we did not generate kallsyms correctly. 660# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using 661# .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a 662# temporary bypass to allow the kernel to be built while the 663# maintainers work out what went wrong with kallsyms. 664 665ifdef CONFIG_KALLSYMS_EXTRA_PASS 666last_kallsyms := 3 667else 668last_kallsyms := 2 669endif 670 671kallsyms.o := .tmp_kallsyms$(last_kallsyms).o 672 673define verify_kallsyms 674 $(Q)$(if $($(quiet)cmd_sysmap), \ 675 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ 676 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map 677 $(Q)cmp -s System.map .tmp_System.map || \ 678 (echo Inconsistent kallsyms data; \ 679 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ 680 rm .tmp_kallsyms* ; /bin/false ) 681endef 682 683# Update vmlinux version before link 684# Use + in front of this rule to silent warning about make -j1 685# First command is ':' to allow us to use + in front of this rule 686cmd_ksym_ld = $(cmd_vmlinux__) 687define rule_ksym_ld 688 : 689 +$(call cmd,vmlinux_version) 690 $(call cmd,vmlinux__) 691 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 692endef 693 694# Generate .S file with all kernel symbols 695quiet_cmd_kallsyms = KSYM $@ 696 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ 697 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ 698 699.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE 700 $(call if_changed_dep,as_o_S) 701 702.tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) 703 $(call cmd,kallsyms) 704 705# .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version 706.tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE 707 $(call if_changed_rule,ksym_ld) 708 709.tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE 710 $(call if_changed,vmlinux__) 711 712.tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE 713 $(call if_changed,vmlinux__) 714 715# Needs to visit scripts/ before $(KALLSYMS) can be used. 716$(KALLSYMS): scripts ; 717 718# Generate some data for debugging strange kallsyms problems 719debug_kallsyms: .tmp_map$(last_kallsyms) 720 721.tmp_map%: .tmp_vmlinux% FORCE 722 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ 723 724.tmp_map3: .tmp_map2 725 726.tmp_map2: .tmp_map1 727 728endif # ifdef CONFIG_KALLSYMS 729 730# vmlinux image - including updated kernel symbols 731vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE 732 $(call if_changed_rule,vmlinux__) 733 $(Q)rm -f .old_version 734 735# The actual objects are generated when descending, 736# make sure no implicit rule kicks in 737$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; 738 739# Handle descending into subdirectories listed in $(vmlinux-dirs) 740# Preset locale variables to speed up the build process. Limit locale 741# tweaks to this spot to avoid wrong language settings when running 742# make menuconfig etc. 743# Error messages still appears in the original language 744 745PHONY += $(vmlinux-dirs) 746$(vmlinux-dirs): prepare scripts 747 $(Q)$(MAKE) $(build)=$@ 748 749# Build the kernel release string 750# The KERNELRELEASE is stored in a file named include/config/kernel.release 751# to be used when executing for example make install or make modules_install 752# 753# Take the contents of any files called localversion* and the config 754# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. 755# LOCALVERSION from the command line override all of this 756 757nullstring := 758space := $(nullstring) # end of line 759 760___localver = $(objtree)/localversion* $(srctree)/localversion* 761__localver = $(sort $(wildcard $(___localver))) 762# skip backup files (containing '~') 763_localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f))) 764 765localver = $(subst $(space),, \ 766 $(shell cat /dev/null $(_localver)) \ 767 $(patsubst "%",%,$(CONFIG_LOCALVERSION))) 768 769# If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called 770# and if the SCM is know a tag from the SCM is appended. 771# The appended tag is determined by the SCM used. 772# 773# Currently, only git is supported. 774# Other SCMs can edit scripts/setlocalversion and add the appropriate 775# checks as needed. 776ifdef CONFIG_LOCALVERSION_AUTO 777 _localver-auto = $(shell $(CONFIG_SHELL) \ 778 $(srctree)/scripts/setlocalversion $(srctree)) 779 localver-auto = $(LOCALVERSION)$(_localver-auto) 780endif 781 782localver-full = $(localver)$(localver-auto) 783 784# Store (new) KERNELRELASE string in include/config/kernel.release 785kernelrelease = $(KERNELVERSION)$(localver-full) 786include/config/kernel.release: include/config/auto.conf FORCE 787 $(Q)rm -f $@ 788 $(Q)echo $(kernelrelease) > $@ 789 790 791# Things we need to do before we recursively start building the kernel 792# or the modules are listed in "prepare". 793# A multi level approach is used. prepareN is processed before prepareN-1. 794# archprepare is used in arch Makefiles and when processed asm symlink, 795# version.h and scripts_basic is processed / created. 796 797# Listed in dependency order 798PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 799 800# prepare-all is deprecated, use prepare as valid replacement 801PHONY += prepare-all 802 803# prepare3 is used to check if we are building in a separate output directory, 804# and if so do: 805# 1) Check that make has not been executed in the kernel src $(srctree) 806# 2) Create the include2 directory, used for the second asm symlink 807prepare3: include/config/kernel.release 808ifneq ($(KBUILD_SRC),) 809 @echo ' Using $(srctree) as source for kernel' 810 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 811 echo " $(srctree) is not clean, please run 'make mrproper'";\ 812 echo " in the '$(srctree)' directory.";\ 813 /bin/false; \ 814 fi; 815 $(Q)if [ ! -d include2 ]; then mkdir -p include2; fi; 816 $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm 817endif 818 819# prepare2 creates a makefile if using a separate output directory 820prepare2: prepare3 outputmakefile 821 822prepare1: prepare2 include/linux/version.h include/linux/utsrelease.h \ 823 include/asm include/config/auto.conf 824ifneq ($(KBUILD_MODULES),) 825 $(Q)mkdir -p $(MODVERDIR) 826 $(Q)rm -f $(MODVERDIR)/* 827endif 828 829archprepare: prepare1 scripts_basic 830 831prepare0: archprepare FORCE 832 $(Q)$(MAKE) $(build)=. 833 834# All the preparing.. 835prepare prepare-all: prepare0 836 837# Leave this as default for preprocessing vmlinux.lds.S, which is now 838# done in arch/$(ARCH)/kernel/Makefile 839 840export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) 841 842# FIXME: The asm symlink changes when $(ARCH) changes. That's 843# hard to detect, but I suppose "make mrproper" is a good idea 844# before switching between archs anyway. 845 846include/asm: 847 @echo ' SYMLINK $@ -> include/asm-$(ARCH)' 848 $(Q)if [ ! -d include ]; then mkdir -p include; fi; 849 @ln -fsn asm-$(ARCH) $@ 850 851# Generate some files 852# --------------------------------------------------------------------------- 853 854# KERNELRELEASE can change from a few different places, meaning version.h 855# needs to be updated, so this check is forced on all builds 856 857uts_len := 64 858define filechk_utsrelease.h 859 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 860 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 861 exit 1; \ 862 fi; \ 863 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 864endef 865 866define filechk_version.h 867 (echo \#define LINUX_VERSION_CODE $(shell \ 868 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 869 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \ 870 echo \#define RHEL_MAJOR $(RHEL_MAJOR); \ 871 echo \#define RHEL_MINOR $(RHEL_MINOR); \ 872 echo \#define RHEL_RELEASE_CODE $(shell \ 873 expr $(RHEL_MAJOR) \* 256 + $(RHEL_MINOR)); \ 874 echo '#define RHEL_RELEASE_VERSION(a,b) (((a) << 8) + (b))'; ) 875endef 876 877include/linux/version.h: $(srctree)/Makefile FORCE 878 $(call filechk,version.h) 879 880include/linux/utsrelease.h: include/config/kernel.release FORCE 881 $(call filechk,utsrelease.h) 882 883# --------------------------------------------------------------------------- 884 885PHONY += depend dep 886depend dep: 887 @echo '*** Warning: make $@ is unnecessary now.' 888 889# --------------------------------------------------------------------------- 890# Kernel headers 891INSTALL_HDR_PATH=$(objtree)/usr 892export INSTALL_HDR_PATH 893 894PHONY += headers_install 895headers_install: include/linux/version.h 896 @if [ ! -r include/asm-$(ARCH)/Kbuild ]; then \ 897 echo '*** Error: Headers not exportable for this architecture ($(ARCH))'; \ 898 exit 1 ; fi 899 $(Q)unifdef -Ux /dev/null 900 $(Q)rm -rf $(INSTALL_HDR_PATH)/include 901 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include 902 903PHONY += headers_check 904headers_check: headers_install 905 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.headersinst obj=include HDRCHECK=1 906 907# --------------------------------------------------------------------------- 908# Modules 909 910ifdef CONFIG_MODULES 911 912# By default, build modules as well 913 914all: modules 915 916# Build modules 917 918PHONY += modules 919modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) 920 @echo ' Building modules, stage 2.'; 921 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 922 923 924# Target to prepare building external modules 925PHONY += modules_prepare 926modules_prepare: prepare scripts 927 928# Target to install modules 929PHONY += modules_install 930modules_install: _modinst_ _modinst_post 931 932PHONY += _modinst_ 933_modinst_: 934 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ 935 echo "Warning: you may need to install module-init-tools"; \ 936 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ 937 sleep 1; \ 938 fi 939 @rm -rf $(MODLIB)/kernel 940 @rm -f $(MODLIB)/source 941 @mkdir -p $(MODLIB)/kernel 942 @ln -s $(srctree) $(MODLIB)/source 943 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 944 rm -f $(MODLIB)/build ; \ 945 ln -s $(objtree) $(MODLIB)/build ; \ 946 fi 947 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst 948 949# If System.map exists, run depmod. This deliberately does not have a 950# dependency on System.map since that would run the dependency tree on 951# vmlinux. This depmod is only for convenience to give the initial 952# boot a modules.dep even before / is mounted read-write. However the 953# boot script depmod is the master version. 954ifeq "$(strip $(INSTALL_MOD_PATH))" "" 955depmod_opts := 956else 957depmod_opts := -b $(INSTALL_MOD_PATH) -r 958endif 959PHONY += _modinst_post 960_modinst_post: _modinst_ 961 if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi 962 963else # CONFIG_MODULES 964 965# Modules not configured 966# --------------------------------------------------------------------------- 967 968modules modules_install: FORCE 969 @echo 970 @echo "The present kernel configuration has modules disabled." 971 @echo "Type 'make config' and enable loadable module support." 972 @echo "Then build a kernel with module support enabled." 973 @echo 974 @exit 1 975 976endif # CONFIG_MODULES 977 978### 979# Cleaning is done on three levels. 980# make clean Delete most generated files 981# Leave enough to build external modules 982# make mrproper Delete the current configuration, and all generated files 983# make distclean Remove editor backup files, patch leftover files and the like 984 985# Directories & files removed with 'make clean' 986CLEAN_DIRS += $(MODVERDIR) 987CLEAN_FILES += vmlinux System.map \ 988 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map 989 990# Directories & files removed with 'make mrproper' 991MRPROPER_DIRS += include/config include2 usr/include 992MRPROPER_FILES += .config .config.old include/asm .version .old_version \ 993 include/linux/autoconf.h include/linux/version.h \ 994 include/linux/utsrelease.h \ 995 Module.symvers tags TAGS cscope* 996 997# clean - Delete most, but leave enough to build external modules 998# 999clean: rm-dirs := $(CLEAN_DIRS) 1000clean: rm-files := $(CLEAN_FILES)
1001clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs)) 1002 1003PHONY += $(clean-dirs) clean archclean 1004$(clean-dirs): 1005 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1006 1007clean: archclean $(clean-dirs) 1008 $(call cmd,rmdirs) 1009 $(call cmd,rmfiles) 1010 @find . $(RCS_FIND_IGNORE) \ 1011 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1012 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1013 -o -name '*.symtypes' \) \ 1014 -type f -print | xargs rm -f 1015 1016# mrproper - Delete all generated files, including .config 1017# 1018mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1019mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1020mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1021 1022PHONY += $(mrproper-dirs) mrproper archmrproper 1023$(mrproper-dirs): 1024 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1025 1026mrproper: clean archmrproper $(mrproper-dirs) 1027 $(call cmd,rmdirs) 1028 $(call cmd,rmfiles) 1029 1030# distclean 1031# 1032PHONY += distclean 1033 1034distclean: mrproper 1035 @find $(srctree) $(RCS_FIND_IGNORE) \ 1036 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1037 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1038 -o -name '.*.rej' -o -size 0 \ 1039 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ 1040 -type f -print | xargs rm -f 1041 1042 1043# Packaging of the kernel to various formats 1044# --------------------------------------------------------------------------- 1045# rpm target kept for backward compatibility 1046package-dir := $(srctree)/scripts/package 1047 1048%pkg: include/config/kernel.release FORCE 1049 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1050rpm: include/config/kernel.release FORCE 1051 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1052 1053 1054# Brief documentation of the typical targets used 1055# --------------------------------------------------------------------------- 1056 1057boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig) 1058boards := $(notdir $(boards)) 1059 1060help: 1061 @echo 'Cleaning targets:' 1062 @echo ' clean - remove most generated files but keep the config' 1063 @echo ' mrproper - remove all generated files + config + various backup files' 1064 @echo '' 1065 @echo 'Configuration targets:' 1066 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1067 @echo '' 1068 @echo 'Other generic targets:' 1069 @echo ' all - Build all targets marked with [*]' 1070 @echo '* vmlinux - Build the bare kernel' 1071 @echo '* modules - Build all modules' 1072 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1073 @echo ' dir/ - Build all files in dir and below' 1074 @echo ' dir/file.[ois] - Build specified target only' 1075 @echo ' dir/file.ko - Build module including final link' 1076 @echo ' rpm - Build a kernel as an RPM package' 1077 @echo ' tags/TAGS - Generate tags file for editors' 1078 @echo ' cscope - Generate cscope index' 1079 @echo ' kernelrelease - Output the release version string' 1080 @echo ' kernelversion - Output the version stored in Makefile' 1081 @if [ -r include/asm-$(ARCH)/Kbuild ]; then \ 1082 echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1083 fi 1084 @echo ' (default: $(INSTALL_HDR_PATH))' 1085 @echo '' 1086 @echo 'Static analysers' 1087 @echo ' checkstack - Generate a list of stack hogs' 1088 @echo ' namespacecheck - Name space analysis on compiled kernel' 1089 @if [ -r include/asm-$(ARCH)/Kbuild ]; then \ 1090 echo ' headers_check - Sanity check on exported headers'; \ 1091 fi 1092 @echo '' 1093 @echo 'Kernel packaging:' 1094 @$(MAKE) $(build)=$(package-dir) help 1095 @echo '' 1096 @echo 'Documentation targets:' 1097 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1098 @echo '' 1099 @echo 'Architecture specific targets ($(ARCH)):' 1100 @$(if $(archhelp),$(archhelp),\ 1101 echo ' No architecture specific help defined for $(ARCH)') 1102 @echo '' 1103 @$(if $(boards), \ 1104 $(foreach b, $(boards), \ 1105 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1106 echo '') 1107 1108 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1109 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1110 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1111 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1112 @echo '' 1113 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1114 @echo 'For further info see the ./README file' 1115 1116 1117# Documentation targets 1118# --------------------------------------------------------------------------- 1119%docs: scripts_basic FORCE 1120 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1121 1122else # KBUILD_EXTMOD 1123 1124### 1125# External module support. 1126# When building external modules the kernel used as basis is considered 1127# read-only, and no consistency checks are made and the make 1128# system is not used on the basis kernel. If updates are required 1129# in the basis kernel ordinary make commands (without M=...) must 1130# be used. 1131# 1132# The following are the only valid targets when building external 1133# modules. 1134# make M=dir clean Delete all automatically generated files 1135# make M=dir modules Make all modules in specified dir 1136# make M=dir Same as 'make M=dir modules' 1137# make M=dir modules_install 1138# Install the modules built in the module directory 1139# Assumes install directory is already created 1140 1141# We are always building modules 1142KBUILD_MODULES := 1 1143PHONY += crmodverdir 1144crmodverdir: 1145 $(Q)mkdir -p $(MODVERDIR) 1146 $(Q)rm -f $(MODVERDIR)/* 1147 1148PHONY += $(objtree)/Module.symvers 1149$(objtree)/Module.symvers: 1150 @test -e $(objtree)/Module.symvers || ( \ 1151 echo; \ 1152 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1153 echo " is missing; modules will have no dependencies and modversions."; \ 1154 echo ) 1155 1156module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1157PHONY += $(module-dirs) modules 1158$(module-dirs): crmodverdir $(objtree)/Module.symvers 1159 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1160 1161modules: $(module-dirs) 1162 @echo ' Building modules, stage 2.'; 1163 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 1164 1165PHONY += modules_install 1166modules_install: _emodinst_ _emodinst_post 1167 1168install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1169PHONY += _emodinst_ 1170_emodinst_: 1171 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1172 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst 1173 1174# Run depmod only is we have System.map and depmod is executable 1175quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1176 cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \ 1177 $(DEPMOD) -ae -F System.map \ 1178 $(if $(strip $(INSTALL_MOD_PATH)), \ 1179 -b $(INSTALL_MOD_PATH) -r) \ 1180 $(KERNELRELEASE); \ 1181 fi 1182 1183PHONY += _emodinst_post 1184_emodinst_post: _emodinst_ 1185 $(call cmd,depmod) 1186 1187clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1188 1189PHONY += $(clean-dirs) clean 1190$(clean-dirs): 1191 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1192 1193clean: rm-dirs := $(MODVERDIR) 1194clean: $(clean-dirs) 1195 $(call cmd,rmdirs) 1196 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ 1197 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1198 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ 1199 -type f -print | xargs rm -f 1200 1201help: 1202 @echo ' Building external modules.' 1203 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1204 @echo '' 1205 @echo ' modules - default target, build the module(s)' 1206 @echo ' modules_install - install the module' 1207 @echo ' clean - remove generated files in module directory only' 1208 @echo '' 1209 1210# Dummies... 1211PHONY += prepare scripts 1212prepare: ; 1213scripts: ; 1214endif # KBUILD_EXTMOD 1215 1216# Generate tags for editors 1217# --------------------------------------------------------------------------- 1218 1219#We want __srctree to totally vanish out when KBUILD_OUTPUT is not set 1220#(which is the most common case IMHO) to avoid unneeded clutter in the big tags file. 1221#Adding $(srctree) adds about 20M on i386 to the size of the output file! 1222 1223ifeq ($(src),$(obj)) 1224__srctree = 1225else 1226__srctree = $(srctree)/ 1227endif 1228 1229ifeq ($(ALLSOURCE_ARCHS),) 1230ifeq ($(ARCH),um) 1231ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH) 1232else 1233ALLINCLUDE_ARCHS := $(ARCH) 1234endif 1235else 1236#Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behavour. 1237ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS) 1238endif 1239 1240ALLSOURCE_ARCHS := $(ARCH) 1241 1242define find-sources 1243 ( find $(__srctree) $(RCS_FIND_IGNORE) \ 1244 \( -name include -o -name arch \) -prune -o \ 1245 -name $1 -print; \ 1246 for ARCH in $(ALLSOURCE_ARCHS) ; do \ 1247 find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \ 1248 -name $1 -print; \ 1249 done ; \ 1250 find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \ 1251 -name $1 -print; \ 1252 find $(__srctree)include $(RCS_FIND_IGNORE) \ 1253 \( -name config -o -name 'asm-*' \) -prune \ 1254 -o -name $1 -print; \ 1255 for ARCH in $(ALLINCLUDE_ARCHS) ; do \ 1256 find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \ 1257 -name $1 -print; \ 1258 done ; \ 1259 find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \ 1260 -name $1 -print ) 1261endef 1262 1263define all-sources 1264 $(call find-sources,'*.[chS]') 1265endef 1266define all-kconfigs 1267 $(call find-sources,'Kconfig*') 1268endef 1269define all-defconfigs 1270 $(call find-sources,'defconfig') 1271endef 1272 1273quiet_cmd_cscope-file = FILELST cscope.files 1274 cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files 1275 1276quiet_cmd_cscope = MAKE cscope.out 1277 cmd_cscope = cscope -b 1278 1279cscope: FORCE 1280 $(call cmd,cscope-file) 1281 $(call cmd,cscope) 1282 1283quiet_cmd_TAGS = MAKE $@ 1284define cmd_TAGS 1285 rm -f $@; \ 1286 ETAGSF=`etags --version | grep -i exuberant >/dev/null && \ 1287 echo "-I __initdata,__exitdata,__acquires,__releases \ 1288 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ 1289 --extra=+f --c-kinds=+px"`; \ 1290 $(all-sources) | xargs etags $$ETAGSF -a; \ 1291 if test "x$$ETAGSF" = x; then \ 1292 $(all-kconfigs) | xargs etags -a \ 1293 --regex='/^config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \ 1294 $(all-defconfigs) | xargs etags -a \ 1295 --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \ 1296 fi 1297endef 1298 1299TAGS: FORCE 1300 $(call cmd,TAGS) 1301 1302 1303quiet_cmd_tags = MAKE $@ 1304define cmd_tags 1305 rm -f $@; \ 1306 CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \ 1307 echo "-I __initdata,__exitdata,__acquires,__releases \ 1308 -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ 1309 --extra=+f --c-kinds=+px"`; \ 1310 $(all-sources) | xargs ctags $$CTAGSF -a 1311endef 1312 1313tags: FORCE 1314 $(call cmd,tags) 1315 1316 1317# Scripts to check various things for consistency 1318# --------------------------------------------------------------------------- 1319 1320includecheck: 1321 find * $(RCS_FIND_IGNORE) \ 1322 -name '*.[hcS]' -type f -print | sort \ 1323 | xargs $(PERL) -w scripts/checkincludes.pl 1324 1325versioncheck: 1326 find * $(RCS_FIND_IGNORE) \ 1327 -name '*.[hcS]' -type f -print | sort \ 1328 | xargs $(PERL) -w scripts/checkversion.pl 1329 1330namespacecheck: 1331 $(PERL) $(srctree)/scripts/namespace.pl 1332 1333endif #ifeq ($(config-targets),1) 1334endif #ifeq ($(mixed-targets),1) 1335 1336PHONY += checkstack kernelrelease kernelversion 1337checkstack: 1338 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1339 $(PERL) $(src)/scripts/checkstack.pl $(ARCH) 1340 1341kernelrelease: 1342 $(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \ 1343 $(error kernelrelease not valid - run 'make prepare' to update it)) 1344kernelversion: 1345 @echo $(KERNELVERSION) 1346 1347# Single targets 1348# --------------------------------------------------------------------------- 1349# Single targets are compatible with: 1350# - build whith mixed source and output 1351# - build with separate output dir 'make O=...' 1352# - external modules 1353# 1354# target-dir => where to store outputfile 1355# build-dir => directory in kernel source tree to use 1356 1357ifeq ($(KBUILD_EXTMOD),) 1358 build-dir = $(patsubst %/,%,$(dir $@)) 1359 target-dir = $(dir $@) 1360else 1361 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1362 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1363 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1364endif 1365 1366%.s: %.c prepare scripts FORCE 1367 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1368%.i: %.c prepare scripts FORCE 1369 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1370%.o: %.c prepare scripts FORCE 1371 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1372%.lst: %.c prepare scripts FORCE 1373 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1374%.s: %.S prepare scripts FORCE 1375 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1376%.o: %.S prepare scripts FORCE 1377 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1378%.symtypes: %.c prepare scripts FORCE 1379 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1380 1381# Modules 1382/ %/: prepare scripts FORCE 1383 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1384 $(build)=$(build-dir) 1385%.ko: prepare scripts FORCE 1386 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1387 $(build)=$(build-dir) $(@:.ko=.o) 1388 $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost 1389 1390# FIXME Should go into a make.lib or something 1391# =========================================================================== 1392 1393quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1394 cmd_rmdirs = rm -rf $(rm-dirs) 1395 1396quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1397 cmd_rmfiles = rm -f $(rm-files) 1398 1399 1400a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \ 1401 $(NOSTDINC_FLAGS) $(CPPFLAGS) \ 1402 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) 1403 1404quiet_cmd_as_o_S = AS $@ 1405cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< 1406 1407# read all saved command lines 1408 1409targets := $(wildcard $(sort $(targets))) 1410cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1411 1412ifneq ($(cmd_files),) 1413 $(cmd_files): ; # Do not try to update included dependency files 1414 include $(cmd_files) 1415endif 1416 1417# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir 1418# Usage: 1419# $(Q)$(MAKE) $(clean)=dir 1420clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj 1421 1422endif # skip-makefile 1423 1424PHONY += FORCE 1425FORCE: 1426 1427 1428# Declare the contents of the .PHONY variable as phony. We keep that 1429# information in a variable se we can use it in if_changed and friends. 1430.PHONY: $(PHONY) 1431