1include ../../.config 2 3VERSION = 2 4PATCHLEVEL = 6 5SUBLEVEL = 36 6EXTRAVERSION = .4 7NAME = Flesh-Eating Bats with Fangs 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: 16# o use make's built-in rules and variables 17# (this increases performance and avoids hard-to-debug behaviour); 18# o print "Entering directory ..."; 19MAKEFLAGS += -rR --no-print-directory 20 21# Avoid funny character set dependencies 22unexport LC_ALL 23LC_COLLATE=C 24LC_NUMERIC=C 25export LC_COLLATE LC_NUMERIC 26 27# We are using a recursive build, so we need to do a little thinking 28# to get the ordering right. 29# 30# Most importantly: sub-Makefiles should only ever modify files in 31# their own directory. If in some directory we have a dependency on 32# a file in another dir (which doesn't happen often, but it's often 33# unavoidable when linking the built-in.o targets which finally 34# turn into vmlinux), we will call a sub make in that other dir, and 35# after that we are sure that everything which is in that other dir 36# is now up to date. 37# 38# The only cases where we need to modify files which have global 39# effects are thus separated out and done before the recursive 40# descending is started. They are now explicitly listed as the 41# prepare rule. 42 43# To put more focus on warnings, be less verbose as default 44# Use 'make V=1' to see the full commands 45 46ifeq ("$(origin V)", "command line") 47 KBUILD_VERBOSE = $(V) 48endif 49ifndef KBUILD_VERBOSE 50 KBUILD_VERBOSE = 0 51endif 52 53# Call a source code checker (by default, "sparse") as part of the 54# C compilation. 55# 56# Use 'make C=1' to enable checking of only re-compiled files. 57# Use 'make C=2' to enable checking of *all* source files, regardless 58# of whether they are re-compiled or not. 59# 60# See the file "Documentation/sparse.txt" for more details, including 61# where to get the "sparse" utility. 62 63ifeq ("$(origin C)", "command line") 64 KBUILD_CHECKSRC = $(C) 65endif 66ifndef KBUILD_CHECKSRC 67 KBUILD_CHECKSRC = 0 68endif 69 70# Use make M=dir to specify directory of external module to build 71# Old syntax make ... SUBDIRS=$PWD is still supported 72# Setting the environment variable KBUILD_EXTMOD take precedence 73ifdef SUBDIRS 74 KBUILD_EXTMOD ?= $(SUBDIRS) 75endif 76 77ifeq ("$(origin M)", "command line") 78 KBUILD_EXTMOD := $(M) 79endif 80 81# kbuild supports saving output files in a separate directory. 82# To locate output files in a separate directory two syntaxes are supported. 83# In both cases the working directory must be the root of the kernel src. 84# 1) O= 85# Use "make O=dir/to/store/output/files/" 86# 87# 2) Set KBUILD_OUTPUT 88# Set the environment variable KBUILD_OUTPUT to point to the directory 89# where the output files shall be placed. 90# export KBUILD_OUTPUT=dir/to/store/output/files/ 91# make 92# 93# The O= assignment takes precedence over the KBUILD_OUTPUT environment 94# variable. 95 96 97# KBUILD_SRC is set on invocation of make in OBJ directory 98# KBUILD_SRC is not intended to be used by the regular user (for now) 99ifeq ($(KBUILD_SRC),) 100 101# OK, Make called in directory where kernel src resides 102# Do we want to locate output files in a separate directory? 103ifeq ("$(origin O)", "command line") 104 KBUILD_OUTPUT := $(O) 105endif 106 107# That's our default target when none is given on the command line 108PHONY := _all 109_all: 110 111# Cancel implicit rules on top Makefile 112$(CURDIR)/Makefile Makefile: ; 113 114ifneq ($(KBUILD_OUTPUT),) 115# Invoke a second make in the output directory, passing relevant variables 116# check that the output directory actually exists 117saved-output := $(KBUILD_OUTPUT) 118KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) 119$(if $(KBUILD_OUTPUT),, \ 120 $(error output directory "$(saved-output)" does not exist)) 121 122PHONY += $(MAKECMDGOALS) sub-make 123 124$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 125 $(Q)@: 126 127sub-make: FORCE 128 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ 129 KBUILD_SRC=$(CURDIR) \ 130 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ 131 $(filter-out _all sub-make,$(MAKECMDGOALS)) 132 133# Leave processing to above invocation of make 134skip-makefile := 1 135endif # ifneq ($(KBUILD_OUTPUT),) 136endif # ifeq ($(KBUILD_SRC),) 137 138# We process the rest of the Makefile if this is the final invocation of make 139ifeq ($(skip-makefile),) 140 141# If building an external module we do not care about the all: rule 142# but instead _all depend on modules 143PHONY += all 144ifeq ($(KBUILD_EXTMOD),) 145_all: all 146else 147_all: modules 148endif 149 150srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) 151objtree := $(CURDIR) 152src := $(srctree) 153obj := $(objtree) 154 155VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 156 157export srctree objtree VPATH 158 159 160# SUBARCH tells the usermode build what the underlying arch is. That is set 161# first, and if a usermode build is happening, the "ARCH=um" on the command 162# line overrides the setting of ARCH below. If a native build is happening, 163# then ARCH is assigned, getting whatever value it gets normally, and 164# SUBARCH is subsequently ignored. 165 166SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ 167 -e s/arm.*/arm/ -e s/sa110/arm/ \ 168 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 169 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 170 -e s/sh[234].*/sh/ ) 171 172# Cross compiling and selecting different set of gcc/bin-utils 173# --------------------------------------------------------------------------- 174# 175# When performing cross compilation for other architectures ARCH shall be set 176# to the target architecture. (See arch/* for the possibilities). 177# ARCH can be set during invocation of make: 178# make ARCH=ia64 179# Another way is to have ARCH set in the environment. 180# The default ARCH is the host where make is executed. 181 182# CROSS_COMPILE specify the prefix used for all executables used 183# during compilation. Only gcc and related bin-utils executables 184# are prefixed with $(CROSS_COMPILE). 185# CROSS_COMPILE can be set on the command line 186# make CROSS_COMPILE=ia64-linux- 187# Alternatively CROSS_COMPILE can be set in the environment. 188# A third alternative is to store a setting in .config so that plain 189# "make" in the configured kernel build directory always uses that. 190# Default value for CROSS_COMPILE is not to prefix executables 191# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 192export KBUILD_BUILDHOST := $(SUBARCH) 193ARCH ?= arm 194CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) 195 196# Architecture as present in compile.h 197UTS_MACHINE := $(ARCH) 198SRCARCH := $(ARCH) 199 200# Additional ARCH settings for x86 201ifeq ($(ARCH),i386) 202 SRCARCH := x86 203endif 204ifeq ($(ARCH),x86_64) 205 SRCARCH := x86 206endif 207 208# Additional ARCH settings for sparc 209ifeq ($(ARCH),sparc64) 210 SRCARCH := sparc 211endif 212 213# Additional ARCH settings for sh 214ifeq ($(ARCH),sh64) 215 SRCARCH := sh 216endif 217 218# Where to locate arch specific headers 219hdr-arch := $(SRCARCH) 220 221ifeq ($(ARCH),m68knommu) 222 hdr-arch := m68k 223endif 224 225KCONFIG_CONFIG ?= .config 226 227# SHELL used by kbuild 228CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 229 else if [ -x /bin/bash ]; then echo /bin/bash; \ 230 else echo sh; fi ; fi) 231 232HOSTCC = gcc 233HOSTCXX = g++ 234HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer 235HOSTCXXFLAGS = -O2 236 237# Decide whether to build built-in, modular, or both. 238# Normally, just do built-in. 239 240KBUILD_MODULES := 241KBUILD_BUILTIN := 1 242 243# If we have only "make modules", don't compile built-in objects. 244# When we're building modules with modversions, we need to consider 245# the built-in objects during the descend as well, in order to 246# make sure the checksums are up to date before we record them. 247 248ifeq ($(MAKECMDGOALS),modules) 249 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 250endif 251 252# If we have "make <whatever> modules", compile modules 253# in addition to whatever we do anyway. 254# Just "make" or "make all" shall build modules as well 255 256ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 257 KBUILD_MODULES := 1 258endif 259 260ifeq ($(MAKECMDGOALS),) 261 KBUILD_MODULES := 1 262endif 263 264export KBUILD_MODULES KBUILD_BUILTIN 265export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 266 267# Beautify output 268# --------------------------------------------------------------------------- 269# 270# Normally, we echo the whole command before executing it. By making 271# that echo $($(quiet)$(cmd)), we now have the possibility to set 272# $(quiet) to choose other forms of output instead, e.g. 273# 274# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 275# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 276# 277# If $(quiet) is empty, the whole command will be printed. 278# If it is set to "quiet_", only the short version will be printed. 279# If it is set to "silent_", nothing will be printed at all, since 280# the variable $(silent_cmd_cc_o_c) doesn't exist. 281# 282# A simple variant is to prefix commands with $(Q) - that's useful 283# for commands that shall be hidden in non-verbose mode. 284# 285# $(Q)ln $@ :< 286# 287# If KBUILD_VERBOSE equals 0 then the above command will be hidden. 288# If KBUILD_VERBOSE equals 1 then the above command is displayed. 289 290ifeq ($(KBUILD_VERBOSE),1) 291 quiet = 292 Q = 293else 294 quiet=quiet_ 295 Q = @ 296endif 297 298# If the user is running make -s (silent mode), suppress echoing of 299# commands 300 301ifneq ($(findstring s,$(MAKEFLAGS)),) 302 quiet=silent_ 303endif 304 305export quiet Q KBUILD_VERBOSE 306 307 308# Look for make include files relative to root of kernel src 309MAKEFLAGS += --include-dir=$(srctree) 310 311# We need some generic definitions (do not try to remake the file). 312$(srctree)/scripts/Kbuild.include: ; 313include $(srctree)/scripts/Kbuild.include 314 315# Make variables (CC, etc...) 316 317AS = $(CROSS_COMPILE)as 318LD = $(CROSS_COMPILE)ld 319CC = $(CROSS_COMPILE)gcc 320CPP = $(CC) -E 321AR = $(CROSS_COMPILE)ar 322NM = $(CROSS_COMPILE)nm 323STRIP = $(CROSS_COMPILE)strip 324OBJCOPY = $(CROSS_COMPILE)objcopy 325OBJDUMP = $(CROSS_COMPILE)objdump 326AWK = awk 327GENKSYMS = scripts/genksyms/genksyms 328INSTALLKERNEL := installkernel 329DEPMOD = /sbin/depmod 330KALLSYMS = scripts/kallsyms 331PERL = perl 332CHECK = sparse 333 334CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 335 -Wbitwise -Wno-return-void $(CF) 336CFLAGS_MODULE = 337AFLAGS_MODULE = 338LDFLAGS_MODULE = 339CFLAGS_KERNEL = 340AFLAGS_KERNEL = 341CFLAGS_GCOV = -fprofile-arcs -ftest-coverage 342 343 344# Use LINUXINCLUDE when you must reference the include/ directory. 345# Needed to be compatible with the O= option 346LINUXINCLUDE := -I$(srctree)/arch/$(hdr-arch)/include -Iinclude \ 347 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 348 -include include/generated/autoconf.h 349 350KBUILD_CPPFLAGS := -D__KERNEL__ 351 352KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 353 -fno-strict-aliasing -fno-common \ 354 -Werror-implicit-function-declaration \ 355 -Wno-format-security \ 356 -fno-delete-null-pointer-checks 357KBUILD_AFLAGS_KERNEL := 358KBUILD_CFLAGS_KERNEL := 359KBUILD_AFLAGS := -D__ASSEMBLY__ 360KBUILD_AFLAGS_MODULE := -DMODULE 361KBUILD_CFLAGS_MODULE := -DMODULE 362KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 363 364# Broadcom source tree 365KBUILD_CFLAGS += -I$(SRCBASE)/include 366KBUILD_CFLAGS += -I$(SRCBASE)/common/include 367KBUILD_CFLAGS += $(WLAN_ComponentIncPath) 368KBUILD_CFLAGS += $(WLAN_StdIncPathA) 369KBUILD_AFLAGS += -I$(SRCBASE)/include 370KBUILD_AFLAGS += -I$(SRCBASE)/common/include 371KBUILD_CFLAGS += -DBCMDRIVER -Dlinux 372 373# Bcm dbg flag 374#KBUILD_CFLAGS += -DBCMDBG 375 376ifeq ($(FEM_PATCH),y) 377KBUILD_CFLAGS += -DSKY85710_FEM_PATCH 378endif 379 380 381# Read KERNELRELEASE from include/config/kernel.release (if it exists) 382KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 383KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) 384 385export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 386export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 387export CPP AR NM STRIP OBJCOPY OBJDUMP 388export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE 389export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 390 391export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 392export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV 393export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 394export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 395export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 396 397# When compiling out-of-tree modules, put MODVERDIR in the module 398# tree rather than in the kernel tree. The kernel tree might 399# even be read-only. 400export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 401 402# Files to ignore in find ... statements 403 404RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o 405export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git 406 407# =========================================================================== 408# Rules shared between *config targets and build targets 409 410# Basic helpers built in scripts/ 411PHONY += scripts_basic 412scripts_basic: 413 $(Q)$(MAKE) $(build)=scripts/basic 414 $(Q)rm -f .tmp_quiet_recordmcount 415 416# To avoid any implicit rule to kick in, define an empty command. 417scripts/basic/%: scripts_basic ; 418 419PHONY += outputmakefile 420# outputmakefile generates a Makefile in the output directory, if using a 421# separate output directory. This allows convenient use of make in the 422# output directory. 423outputmakefile: 424ifneq ($(KBUILD_SRC),) 425 $(Q)ln -fsn $(srctree) source 426 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 427 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 428endif 429 430# To make sure we do not include .config for any of the *config targets 431# catch them early, and hand them over to scripts/kconfig/Makefile 432# It is allowed to specify more targets when calling make, including 433# mixing *config targets and build targets. 434# For example 'make oldconfig all'. 435# Detect when mixed targets is specified, and make a second invocation 436# of make so .config is not included in this case either (for *config). 437 438no-dot-config-targets := clean mrproper distclean \ 439 cscope TAGS tags help %docs check% coccicheck \ 440 include/linux/version.h headers_% \ 441 kernelversion %src-pkg 442 443config-targets := 0 444mixed-targets := 0 445dot-config := 1 446 447ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 448 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 449 dot-config := 0 450 endif 451endif 452 453ifeq ($(KBUILD_EXTMOD),) 454 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 455 config-targets := 1 456 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 457 mixed-targets := 1 458 endif 459 endif 460endif 461 462ifeq ($(mixed-targets),1) 463# =========================================================================== 464# We're called with mixed targets (*config and build targets). 465# Handle them one by one. 466 467%:: FORCE 468 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ 469 470else 471ifeq ($(config-targets),1) 472# =========================================================================== 473# *config targets only - make sure prerequisites are updated, and descend 474# in scripts/kconfig to make the *config target 475 476# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 477# KBUILD_DEFCONFIG may point out an alternative default configuration 478# used for 'make defconfig' 479include $(srctree)/arch/$(SRCARCH)/Makefile 480export KBUILD_DEFCONFIG KBUILD_KCONFIG 481 482config: scripts_basic outputmakefile FORCE 483 $(Q)mkdir -p include/linux include/config 484 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 485 486%config: scripts_basic outputmakefile FORCE 487 $(Q)mkdir -p include/linux include/config 488 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 489 490else 491# =========================================================================== 492# Build targets only - this includes vmlinux, arch specific targets, clean 493# targets and others. In general all targets except *config targets. 494 495ifeq ($(KBUILD_EXTMOD),) 496# Additional helpers built in scripts/ 497# Carefully list dependencies so we do not try to build scripts twice 498# in parallel 499PHONY += scripts 500scripts: scripts_basic include/config/auto.conf include/config/tristate.conf 501 $(Q)$(MAKE) $(build)=$(@) 502 503# Objects we will link into vmlinux / subdirs we need to visit 504init-y := init/ 505drivers-y := drivers/ sound/ firmware/ 506net-y := net/ 507libs-y := lib/ 508core-y := usr/ 509endif # KBUILD_EXTMOD 510 511ifeq ($(dot-config),1) 512# Read in config 513-include include/config/auto.conf 514 515ifeq ($(KBUILD_EXTMOD),) 516# Read in dependencies to all Kconfig* files, make sure to run 517# oldconfig if changes are detected. 518-include include/config/auto.conf.cmd 519 520# To avoid any implicit rule to kick in, define an empty command 521$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 522 523# If .config is newer than include/config/auto.conf, someone tinkered 524# with it and forgot to run make oldconfig. 525# if auto.conf.cmd is missing then we are probably in a cleaned tree so 526# we execute the config step to be sure to catch updated Kconfig files 527include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 528 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 529else 530# external modules needs include/generated/autoconf.h and include/config/auto.conf 531# but do not care if they are up-to-date. Use auto.conf to trigger the test 532PHONY += include/config/auto.conf 533 534include/config/auto.conf: 535 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 536 echo; \ 537 echo " ERROR: Kernel configuration is invalid."; \ 538 echo " include/generated/autoconf.h or $@ are missing.";\ 539 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 540 echo; \ 541 /bin/false) 542 543endif # KBUILD_EXTMOD 544 545else 546# Dummy target needed, because used as prerequisite 547include/config/auto.conf: ; 548endif # $(dot-config) 549 550# The all: target is the default when no target is given on the 551# command line. 552# This allow a user to issue only 'make' to build a kernel including modules 553# Defaults to vmlinux, but the arch makefile usually adds further targets 554all: vmlinux 555 556# Broadcom features compile options 557ifneq ($(CONFIG_BCM_CTF),) 558KBUILD_CFLAGS += -DHNDCTF -DCTFPOOL -DCTFMAP -DPKTC -DCTF_PPPOE -DCTF_PPTP -DCTF_L2TP 559ifneq ($(CONFIG_WL_USBAP),) 560KBUILD_CFLAGS += -DCTFPOOL_SPINLOCK 561endif 562ifneq ($(CONFIG_IPV6),) 563KBUILD_CFLAGS += -DCTF_IPV6 564endif 565endif 566 567ifneq ($(CONFIG_BCM_FA),) 568KBUILD_CFLAGS += -DBCMFA 569endif 570 571ifneq ($(CONFIG_RGMII_BCM_FA),) 572KBUILD_CFLAGS += -DRGMII_BCM_FA 573endif 574 575ifneq ($(CONFIG_BCM47XX),) 576KBUILD_CFLAGS += -DBCM47XX 577endif 578 579ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 580KBUILD_CFLAGS += -Os 581else 582KBUILD_CFLAGS += -O2 583endif 584 585ifeq ($(CONFIG_LINUX_MTD),32) 586KBUILD_CFLAGS += -D"CONFIG_LINUX_MTD=32" 587endif 588ifeq ($(CONFIG_LINUX_MTD),64) 589KBUILD_CFLAGS += -D"CONFIG_LINUX_MTD=64" 590endif 591ifeq ($(CONFIG_LINUX_MTD),128) 592KBUILD_CFLAGS += -D"CONFIG_LINUX_MTD=128" 593endif 594 595ifeq ($(BWDPI),y) 596KBUILD_CFLAGS += -DRTCONFIG_BWDPI 597endif 598 599ifeq ($(CONFIG_DUAL_TRX),y) 600KBUILD_CFLAGS += -DCONFIG_DUAL_TRX 601endif 602 603include $(srctree)/arch/$(SRCARCH)/Makefile 604 605ifneq ($(CONFIG_FRAME_WARN),0) 606KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 607endif 608 609# Force gcc to behave correct even for buggy distributions 610ifndef CONFIG_CC_STACKPROTECTOR 611KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) 612endif 613 614ifdef CONFIG_FRAME_POINTER 615KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 616else 617ifeq ($(CONFIG_BUZZZ_FUNC),y) 618KBUILD_CFLAGS += -fno-omit-frame-pointer 619else 620KBUILD_CFLAGS += -fomit-frame-pointer 621endif # CONFIG_BUZZZ_FUNC 622endif 623 624ifdef CONFIG_DEBUG_INFO 625KBUILD_CFLAGS += -g 626KBUILD_AFLAGS += -gdwarf-2 627endif 628 629ifdef CONFIG_DEBUG_INFO_REDUCED 630KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) 631endif 632 633ifdef CONFIG_FUNCTION_TRACER 634KBUILD_CFLAGS += -pg 635endif 636 637ifeq ($(CONFIG_ELF_CORE),y) 638KBUILD_CFLAGS += -DDEBUG 639KBUILD_CFLAGS += -g 640KBUILD_AFLAGS += -gdwarf-2 641endif 642 643# We trigger additional mismatches with less inlining 644ifdef CONFIG_DEBUG_SECTION_MISMATCH 645KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 646endif 647 648# arch Makefile may override CC so keep this after arch Makefile is included 649NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 650CHECKFLAGS += $(NOSTDINC_FLAGS) 651 652# warn about C99 declaration after statement 653KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 654 655# disable pointer signed / unsigned warnings in gcc 4.0 656KBUILD_CFLAGS += $(call cc-option,-Wno-pointer-sign,) 657 658# disable invalid "can't wrap" optimizations for signed / pointers 659KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 660 661# conserve stack if available 662KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 663 664# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 665# But warn user when we do so 666warn-assign = \ 667$(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") 668 669ifneq ($(KCPPFLAGS),) 670 $(call warn-assign,CPPFLAGS) 671 KBUILD_CPPFLAGS += $(KCPPFLAGS) 672endif 673ifneq ($(KAFLAGS),) 674 $(call warn-assign,AFLAGS) 675 KBUILD_AFLAGS += $(KAFLAGS) 676endif 677ifneq ($(KCFLAGS),) 678 $(call warn-assign,CFLAGS) 679 KBUILD_CFLAGS += $(KCFLAGS) 680endif 681 682# Use --build-id when available. 683LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 684 $(call cc-ldoption, -Wl$(comma)--build-id,)) 685KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 686LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 687 688ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 689LDFLAGS_vmlinux += $(call ld-option, -X,) 690endif 691 692# Default kernel image to build when no specific target is given. 693# KBUILD_IMAGE may be overruled on the command line or 694# set in the environment 695# Also any assignments in arch/$(ARCH)/Makefile take precedence over 696# this default value 697export KBUILD_IMAGE ?= vmlinux 698 699# 700# INSTALL_PATH specifies where to place the updated kernel and system map 701# images. Default is /boot, but you can set it to other values 702export INSTALL_PATH ?= /boot 703 704# 705# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 706# relocations required by build roots. This is not defined in the 707# makefile but the argument can be passed to make if needed. 708# 709 710MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 711export MODLIB 712 713# 714# INSTALL_MOD_STRIP, if defined, will cause modules to be 715# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 716# the default option --strip-debug will be used. Otherwise, 717# INSTALL_MOD_STRIP will used as the options to the strip command. 718 719ifeq ($(CONFIG_BUZZZ_FUNC),y) 720mod_strip_cmd = $(STRIP) --strip-debug 721else 722ifdef INSTALL_MOD_STRIP 723ifeq ($(INSTALL_MOD_STRIP),1) 724mod_strip_cmd = $(STRIP) --strip-debug 725else 726mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 727endif # INSTALL_MOD_STRIP=1 728else 729mod_strip_cmd = true 730endif # INSTALL_MOD_STRIP 731endif # CONFIG_BUZZZ_FUNC 732export mod_strip_cmd 733 734 735ifeq ($(KBUILD_EXTMOD),) 736core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 737 738vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 739 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 740 $(net-y) $(net-m) $(libs-y) $(libs-m))) 741 742vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 743 $(init-n) $(init-) \ 744 $(core-n) $(core-) $(drivers-n) $(drivers-) \ 745 $(net-n) $(net-) $(libs-n) $(libs-)))) 746 747init-y := $(patsubst %/, %/built-in.o, $(init-y)) 748core-y := $(patsubst %/, %/built-in.o, $(core-y)) 749drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 750net-y := $(patsubst %/, %/built-in.o, $(net-y)) 751libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 752libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 753libs-y := $(libs-y1) $(libs-y2) 754 755# Build vmlinux 756# --------------------------------------------------------------------------- 757# vmlinux is built from the objects selected by $(vmlinux-init) and 758# $(vmlinux-main). Most are built-in.o files from top-level directories 759# in the kernel tree, others are specified in arch/$(ARCH)/Makefile. 760# Ordering when linking is important, and $(vmlinux-init) must be first. 761# 762# vmlinux 763# ^ 764# | 765# +-< $(vmlinux-init) 766# | +--< init/version.o + more 767# | 768# +--< $(vmlinux-main) 769# | +--< driver/built-in.o mm/built-in.o + more 770# | 771# +-< kallsyms.o (see description in CONFIG_KALLSYMS section) 772# 773# vmlinux version (uname -v) cannot be updated during normal 774# descending-into-subdirs phase since we do not yet know if we need to 775# update vmlinux. 776# Therefore this step is delayed until just before final link of vmlinux - 777# except in the kallsyms case where it is done just before adding the 778# symbols to the kernel. 779# 780# System.map is generated to document addresses of all kernel symbols 781 782vmlinux-init := $(head-y) $(init-y) 783vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) 784vmlinux-all := $(vmlinux-init) $(vmlinux-main) 785vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds 786export KBUILD_VMLINUX_OBJS := $(vmlinux-all) 787 788# Rule to link vmlinux - also used during CONFIG_KALLSYMS 789# May be overridden by arch/$(ARCH)/Makefile 790quiet_cmd_vmlinux__ ?= LD $@ 791 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ 792 -T $(vmlinux-lds) $(vmlinux-init) \ 793 --start-group $(vmlinux-main) --end-group \ 794 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) 795 796# Generate new vmlinux version 797quiet_cmd_vmlinux_version = GEN .version 798 cmd_vmlinux_version = set -e; \ 799 if [ ! -r .version ]; then \ 800 rm -f .version; \ 801 echo 1 >.version; \ 802 else \ 803 mv .version .old_version; \ 804 expr 0$$(cat .old_version) + 1 >.version; \ 805 fi; \ 806 $(MAKE) $(build)=init 807 808# Generate System.map 809quiet_cmd_sysmap = SYSMAP 810 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap 811 812# Link of vmlinux 813# If CONFIG_KALLSYMS is set .version is already updated 814# Generate System.map and verify that the content is consistent 815# Use + in front of the vmlinux_version rule to silent warning with make -j2 816# First command is ':' to allow us to use + in front of the rule 817define rule_vmlinux__ 818 : 819 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) 820 821 $(call cmd,vmlinux__) 822 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 823 824 $(Q)$(if $($(quiet)cmd_sysmap), \ 825 echo ' $($(quiet)cmd_sysmap) System.map' &&) \ 826 $(cmd_sysmap) $@ System.map; \ 827 if [ $$? -ne 0 ]; then \ 828 rm -f $@; \ 829 /bin/false; \ 830 fi; 831 $(verify_kallsyms) 832endef 833 834 835ifdef CONFIG_KALLSYMS 836# Generate section listing all symbols and add it into vmlinux $(kallsyms.o) 837# It's a three stage process: 838# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is 839# empty 840# Running kallsyms on that gives us .tmp_kallsyms1.o with 841# the right size - vmlinux version (uname -v) is updated during this step 842# o .tmp_vmlinux2 now has a __kallsyms section of the right size, 843# but due to the added section, some addresses have shifted. 844# From here, we generate a correct .tmp_kallsyms2.o 845# o The correct .tmp_kallsyms2.o is linked into the final vmlinux. 846# o Verify that the System.map from vmlinux matches the map from 847# .tmp_vmlinux2, just in case we did not generate kallsyms correctly. 848# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using 849# .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a 850# temporary bypass to allow the kernel to be built while the 851# maintainers work out what went wrong with kallsyms. 852 853ifdef CONFIG_KALLSYMS_EXTRA_PASS 854last_kallsyms := 3 855else 856last_kallsyms := 2 857endif 858 859kallsyms.o := .tmp_kallsyms$(last_kallsyms).o 860 861define verify_kallsyms 862 $(Q)$(if $($(quiet)cmd_sysmap), \ 863 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ 864 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map 865 $(Q)cmp -s System.map .tmp_System.map || \ 866 (echo Inconsistent kallsyms data; \ 867 echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \ 868 rm .tmp_kallsyms* ; /bin/false ) 869endef 870 871# Update vmlinux version before link 872# Use + in front of this rule to silent warning about make -j1 873# First command is ':' to allow us to use + in front of this rule 874cmd_ksym_ld = $(cmd_vmlinux__) 875define rule_ksym_ld 876 : 877 +$(call cmd,vmlinux_version) 878 $(call cmd,vmlinux__) 879 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 880endef 881 882# Generate .S file with all kernel symbols 883quiet_cmd_kallsyms = KSYM $@ 884 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ 885 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ 886 887.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE 888 $(call if_changed_dep,as_o_S) 889 890.tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) 891 $(call cmd,kallsyms) 892 893# .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version 894.tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE 895 $(call if_changed_rule,ksym_ld) 896 897.tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE 898 $(call if_changed,vmlinux__) 899 900.tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE 901 $(call if_changed,vmlinux__) 902 903# Needs to visit scripts/ before $(KALLSYMS) can be used. 904$(KALLSYMS): scripts ; 905 906# Generate some data for debugging strange kallsyms problems 907debug_kallsyms: .tmp_map$(last_kallsyms) 908 909.tmp_map%: .tmp_vmlinux% FORCE 910 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ 911 912.tmp_map3: .tmp_map2 913 914.tmp_map2: .tmp_map1 915 916endif # ifdef CONFIG_KALLSYMS 917 918# Do modpost on a prelinked vmlinux. The finally linked vmlinux has 919# relevant sections renamed as per the linker script. 920quiet_cmd_vmlinux-modpost = LD $@ 921 cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ 922 $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ 923 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) 924define rule_vmlinux-modpost 925 : 926 +$(call cmd,vmlinux-modpost) 927 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ 928 $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd 929endef 930 931# vmlinux image - including updated kernel symbols 932vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE 933ifdef CONFIG_HEADERS_CHECK 934 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 935endif 936ifdef CONFIG_SAMPLES 937 $(Q)$(MAKE) $(build)=samples 938endif 939ifdef CONFIG_BUILD_DOCSRC 940 $(Q)$(MAKE) $(build)=Documentation 941endif 942 $(call vmlinux-modpost) 943 $(call if_changed_rule,vmlinux__) 944 $(Q)rm -f .old_version 945 946# build vmlinux.o first to catch section mismatch errors early 947ifdef CONFIG_KALLSYMS 948.tmp_vmlinux1: vmlinux.o 949endif 950 951modpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) 952vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE 953 $(call if_changed_rule,vmlinux-modpost) 954 955# The actual objects are generated when descending, 956# make sure no implicit rule kicks in 957$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; 958 959# Handle descending into subdirectories listed in $(vmlinux-dirs) 960# Preset locale variables to speed up the build process. Limit locale 961# tweaks to this spot to avoid wrong language settings when running 962# make menuconfig etc. 963# Error messages still appears in the original language 964 965PHONY += $(vmlinux-dirs) 966$(vmlinux-dirs): prepare scripts 967 $(Q)$(MAKE) $(build)=$@ 968 969# Store (new) KERNELRELASE string in include/config/kernel.release 970include/config/kernel.release: include/config/auto.conf FORCE 971 $(Q)rm -f $@ 972 $(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@ 973 974 975# Things we need to do before we recursively start building the kernel 976# or the modules are listed in "prepare". 977# A multi level approach is used. prepareN is processed before prepareN-1. 978# archprepare is used in arch Makefiles and when processed asm symlink, 979# version.h and scripts_basic is processed / created. 980 981# Listed in dependency order 982PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 983 984# prepare3 is used to check if we are building in a separate output directory, 985# and if so do: 986# 1) Check that make has not been executed in the kernel src $(srctree) 987prepare3: include/config/kernel.release 988ifneq ($(KBUILD_SRC),) 989 @$(kecho) ' Using $(srctree) as source for kernel' 990 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 991 echo " $(srctree) is not clean, please run 'make mrproper'";\ 992 echo " in the '$(srctree)' directory.";\ 993 /bin/false; \ 994 fi; 995endif 996 997# prepare2 creates a makefile if using a separate output directory 998prepare2: prepare3 outputmakefile 999 1000prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \ 1001 include/config/auto.conf 1002 $(cmd_crmodverdir) 1003 1004archprepare: prepare1 scripts_basic 1005 1006prepare0: archprepare FORCE 1007 $(Q)$(MAKE) $(build)=. 1008 $(Q)$(MAKE) $(build)=. missing-syscalls 1009 1010# All the preparing.. 1011prepare: prepare0 1012 1013# Generate some files 1014# --------------------------------------------------------------------------- 1015 1016# KERNELRELEASE can change from a few different places, meaning version.h 1017# needs to be updated, so this check is forced on all builds 1018 1019uts_len := 64 1020define filechk_utsrelease.h 1021 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 1022 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 1023 exit 1; \ 1024 fi; \ 1025 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1026endef 1027 1028define filechk_version.h 1029 (echo \#define LINUX_VERSION_CODE $(shell \ 1030 expr $(VERSION) \* 65536 + $(PATCHLEVEL) \* 256 + $(SUBLEVEL)); \ 1031 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1032endef 1033 1034include/linux/version.h: $(srctree)/Makefile FORCE 1035 $(call filechk,version.h) 1036 1037include/generated/utsrelease.h: include/config/kernel.release FORCE 1038 $(call filechk,utsrelease.h) 1039 1040PHONY += headerdep 1041headerdep: 1042 $(Q)find include/ -name '*.h' | xargs --max-args 1 scripts/headerdep.pl 1043 1044# --------------------------------------------------------------------------- 1045 1046PHONY += depend dep 1047depend dep: 1048 @echo '*** Warning: make $@ is unnecessary now.' 1049 1050# --------------------------------------------------------------------------- 1051# Firmware install 1052INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware 1053export INSTALL_FW_PATH 1054 1055PHONY += firmware_install 1056firmware_install: FORCE 1057 @mkdir -p $(objtree)/firmware 1058 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 1059 1060# --------------------------------------------------------------------------- 1061# Kernel headers 1062 1063#Default location for installed headers 1064export INSTALL_HDR_PATH = $(objtree)/usr 1065 1066hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj 1067 1068# If we do an all arch process set dst to asm-$(hdr-arch) 1069hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1070 1071PHONY += __headers 1072__headers: include/linux/version.h scripts_basic FORCE 1073 $(Q)$(MAKE) $(build)=scripts scripts/unifdef 1074 1075PHONY += headers_install_all 1076headers_install_all: 1077 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1078 1079PHONY += headers_install 1080headers_install: __headers 1081 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \ 1082 $(error Headers not exportable for the $(SRCARCH) architecture)) 1083 $(Q)$(MAKE) $(hdr-inst)=include 1084 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) 1085 1086PHONY += headers_check_all 1087headers_check_all: headers_install_all 1088 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1089 1090PHONY += headers_check 1091headers_check: headers_install 1092 $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 1093 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1 1094 1095# --------------------------------------------------------------------------- 1096# Modules 1097 1098ifdef CONFIG_MODULES 1099 1100# By default, build modules as well 1101 1102all: modules 1103 1104# Build modules 1105# 1106# A module can be listed more than once in obj-m resulting in 1107# duplicate lines in modules.order files. Those are removed 1108# using awk while concatenating to the final file. 1109 1110PHONY += modules 1111modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin 1112 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1113 @$(kecho) ' Building modules, stage 2.'; 1114 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1115 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1116 1117modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1118 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1119 1120%/modules.builtin: include/config/auto.conf 1121 $(Q)$(MAKE) $(modbuiltin)=$* 1122 1123 1124# Target to prepare building external modules 1125PHONY += modules_prepare 1126modules_prepare: prepare scripts 1127 1128# Target to install modules 1129PHONY += modules_install 1130modules_install: _modinst_ _modinst_post 1131 1132PHONY += _modinst_ 1133_modinst_: 1134 @if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \ 1135 echo "Warning: you may need to install module-init-tools"; \ 1136 echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\ 1137 sleep 1; \ 1138 fi 1139 @rm -rf $(MODLIB)/kernel 1140 @rm -f $(MODLIB)/source 1141 @mkdir -p $(MODLIB)/kernel 1142 @ln -s $(srctree) $(MODLIB)/source 1143 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1144 rm -f $(MODLIB)/build ; \ 1145 ln -s $(objtree) $(MODLIB)/build ; \ 1146 fi 1147 @cp -f $(objtree)/modules.order $(MODLIB)/ 1148 @cp -f $(objtree)/modules.builtin $(MODLIB)/ 1149 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1150 1151# This depmod is only for convenience to give the initial 1152# boot a modules.dep even before / is mounted read-write. However the 1153# boot script depmod is the master version. 1154PHONY += _modinst_post 1155_modinst_post: _modinst_ 1156 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst 1157 $(call cmd,depmod) 1158 1159else # CONFIG_MODULES 1160 1161# Modules not configured 1162# --------------------------------------------------------------------------- 1163 1164modules modules_install: FORCE 1165 @echo 1166 @echo "The present kernel configuration has modules disabled." 1167 @echo "Type 'make config' and enable loadable module support." 1168 @echo "Then build a kernel with module support enabled." 1169 @echo 1170 @exit 1 1171 1172endif # CONFIG_MODULES 1173 1174### 1175# Cleaning is done on three levels. 1176# make clean Delete most generated files 1177# Leave enough to build external modules 1178# make mrproper Delete the current configuration, and all generated files 1179# make distclean Remove editor backup files, patch leftover files and the like 1180 1181# Directories & files removed with 'make clean' 1182CLEAN_DIRS += $(MODVERDIR) 1183CLEAN_FILES += vmlinux System.map \ 1184 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map 1185 1186# Directories & files removed with 'make mrproper' 1187MRPROPER_DIRS += include/config usr/include include/generated 1188MRPROPER_FILES += .config .config.old .version .old_version \ 1189 include/linux/version.h \ 1190 Module.symvers tags TAGS cscope* 1191 1192# clean - Delete most, but leave enough to build external modules 1193# 1194clean: rm-dirs := $(CLEAN_DIRS) 1195clean: rm-files := $(CLEAN_FILES) 1196clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs) Documentation) 1197 1198PHONY += $(clean-dirs) clean archclean 1199$(clean-dirs): 1200 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1201 1202clean: archclean $(clean-dirs) 1203 $(call cmd,rmdirs) 1204 $(call cmd,rmfiles) 1205 @find . $(RCS_FIND_IGNORE) \ 1206 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1207 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1208 -o -name '*.symtypes' -o -name 'modules.order' \ 1209 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1210 -o -name '*.gcno' \) -type f -print | xargs rm -f 1211 1212# mrproper - Delete all generated files, including .config 1213# 1214mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1215mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1216mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1217 1218PHONY += $(mrproper-dirs) mrproper archmrproper 1219$(mrproper-dirs): 1220 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1221 1222mrproper: clean archmrproper $(mrproper-dirs) 1223 $(call cmd,rmdirs) 1224 $(call cmd,rmfiles) 1225 1226# distclean 1227# 1228PHONY += distclean 1229 1230distclean: mrproper 1231 @find $(srctree) $(RCS_FIND_IGNORE) \ 1232 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1233 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1234 -o -name '.*.rej' -o -size 0 \ 1235 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ 1236 -type f -print | xargs rm -f 1237 1238 1239# Packaging of the kernel to various formats 1240# --------------------------------------------------------------------------- 1241# rpm target kept for backward compatibility 1242package-dir := $(srctree)/scripts/package 1243 1244%src-pkg: FORCE 1245 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1246%pkg: include/config/kernel.release FORCE 1247 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1248rpm: include/config/kernel.release FORCE 1249 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1250 1251 1252# Brief documentation of the typical targets used 1253# --------------------------------------------------------------------------- 1254 1255boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1256boards := $(notdir $(boards)) 1257board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1258board-dirs := $(sort $(notdir $(board-dirs:/=))) 1259 1260help: 1261 @echo 'Cleaning targets:' 1262 @echo ' clean - Remove most generated files but keep the config and' 1263 @echo ' enough build support to build external modules' 1264 @echo ' mrproper - Remove all generated files + config + various backup files' 1265 @echo ' distclean - mrproper + remove editor backup and patch files' 1266 @echo '' 1267 @echo 'Configuration targets:' 1268 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1269 @echo '' 1270 @echo 'Other generic targets:' 1271 @echo ' all - Build all targets marked with [*]' 1272 @echo '* vmlinux - Build the bare kernel' 1273 @echo '* modules - Build all modules' 1274 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1275 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' 1276 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1277 @echo ' dir/ - Build all files in dir and below' 1278 @echo ' dir/file.[oisS] - Build specified target only' 1279 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1280 @echo ' (requires a recent binutils and recent build (System.map))' 1281 @echo ' dir/file.ko - Build module including final link' 1282 @echo ' modules_prepare - Set up for building external modules' 1283 @echo ' tags/TAGS - Generate tags file for editors' 1284 @echo ' cscope - Generate cscope index' 1285 @echo ' kernelrelease - Output the release version string' 1286 @echo ' kernelversion - Output the version stored in Makefile' 1287 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1288 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1289 echo '' 1290 @echo 'Static analysers' 1291 @echo ' checkstack - Generate a list of stack hogs' 1292 @echo ' namespacecheck - Name space analysis on compiled kernel' 1293 @echo ' versioncheck - Sanity check on version.h usage' 1294 @echo ' includecheck - Check for duplicate included header files' 1295 @echo ' export_report - List the usages of all exported symbols' 1296 @echo ' headers_check - Sanity check on exported headers' 1297 @echo ' headerdep - Detect inclusion cycles in headers' 1298 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 1299 @echo '' 1300 @echo 'Kernel packaging:' 1301 @$(MAKE) $(build)=$(package-dir) help 1302 @echo '' 1303 @echo 'Documentation targets:' 1304 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1305 @echo '' 1306 @echo 'Architecture specific targets ($(SRCARCH)):' 1307 @$(if $(archhelp),$(archhelp),\ 1308 echo ' No architecture specific help defined for $(SRCARCH)') 1309 @echo '' 1310 @$(if $(boards), \ 1311 $(foreach b, $(boards), \ 1312 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1313 echo '') 1314 @$(if $(board-dirs), \ 1315 $(foreach b, $(board-dirs), \ 1316 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1317 printf " %-16s - Show all of the above\\n" help-boards; \ 1318 echo '') 1319 1320 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1321 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1322 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1323 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1324 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1325 @echo '' 1326 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1327 @echo 'For further info see the ./README file' 1328 1329 1330help-board-dirs := $(addprefix help-,$(board-dirs)) 1331 1332help-boards: $(help-board-dirs) 1333 1334boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) 1335 1336$(help-board-dirs): help-%: 1337 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1338 @$(if $(boards-per-dir), \ 1339 $(foreach b, $(boards-per-dir), \ 1340 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1341 echo '') 1342 1343 1344# Documentation targets 1345# --------------------------------------------------------------------------- 1346%docs: scripts_basic FORCE 1347 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1348 1349else # KBUILD_EXTMOD 1350 1351### 1352# External module support. 1353# When building external modules the kernel used as basis is considered 1354# read-only, and no consistency checks are made and the make 1355# system is not used on the basis kernel. If updates are required 1356# in the basis kernel ordinary make commands (without M=...) must 1357# be used. 1358# 1359# The following are the only valid targets when building external 1360# modules. 1361# make M=dir clean Delete all automatically generated files 1362# make M=dir modules Make all modules in specified dir 1363# make M=dir Same as 'make M=dir modules' 1364# make M=dir modules_install 1365# Install the modules built in the module directory 1366# Assumes install directory is already created 1367 1368# We are always building modules 1369KBUILD_MODULES := 1 1370PHONY += crmodverdir 1371crmodverdir: 1372 $(cmd_crmodverdir) 1373 1374PHONY += $(objtree)/Module.symvers 1375$(objtree)/Module.symvers: 1376 @test -e $(objtree)/Module.symvers || ( \ 1377 echo; \ 1378 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1379 echo " is missing; modules will have no dependencies and modversions."; \ 1380 echo ) 1381 1382module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1383PHONY += $(module-dirs) modules 1384$(module-dirs): crmodverdir $(objtree)/Module.symvers 1385 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1386 1387modules: $(module-dirs) 1388 @$(kecho) ' Building modules, stage 2.'; 1389 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1390 1391PHONY += modules_install 1392modules_install: _emodinst_ _emodinst_post 1393 1394install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1395PHONY += _emodinst_ 1396_emodinst_: 1397 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1398 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1399 1400PHONY += _emodinst_post 1401_emodinst_post: _emodinst_ 1402 $(call cmd,depmod) 1403 1404clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1405 1406PHONY += $(clean-dirs) clean 1407$(clean-dirs): 1408 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1409 1410clean: rm-dirs := $(MODVERDIR) 1411clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers \ 1412 $(KBUILD_EXTMOD)/modules.order \ 1413 $(KBUILD_EXTMOD)/modules.builtin 1414clean: $(clean-dirs) 1415 $(call cmd,rmdirs) 1416 $(call cmd,rmfiles) 1417 @find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \ 1418 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1419 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1420 -o -name '*.gcno' \) -type f -print | xargs rm -f 1421 1422help: 1423 @echo ' Building external modules.' 1424 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1425 @echo '' 1426 @echo ' modules - default target, build the module(s)' 1427 @echo ' modules_install - install the module' 1428 @echo ' clean - remove generated files in module directory only' 1429 @echo '' 1430 1431# Dummies... 1432PHONY += prepare scripts 1433prepare: ; 1434scripts: ; 1435endif # KBUILD_EXTMOD 1436 1437# Generate tags for editors 1438# --------------------------------------------------------------------------- 1439quiet_cmd_tags = GEN $@ 1440 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1441 1442tags TAGS cscope: FORCE 1443 $(call cmd,tags) 1444 1445# Scripts to check various things for consistency 1446# --------------------------------------------------------------------------- 1447 1448includecheck: 1449 find * $(RCS_FIND_IGNORE) \ 1450 -name '*.[hcS]' -type f -print | sort \ 1451 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1452 1453versioncheck: 1454 find * $(RCS_FIND_IGNORE) \ 1455 -name '*.[hcS]' -type f -print | sort \ 1456 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1457 1458coccicheck: 1459 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 1460 1461namespacecheck: 1462 $(PERL) $(srctree)/scripts/namespace.pl 1463 1464export_report: 1465 $(PERL) $(srctree)/scripts/export_report.pl 1466 1467endif #ifeq ($(config-targets),1) 1468endif #ifeq ($(mixed-targets),1) 1469 1470PHONY += checkstack kernelrelease kernelversion 1471 1472# UML needs a little special treatment here. It wants to use the host 1473# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1474# else wants $(ARCH), including people doing cross-builds, which means 1475# that $(SUBARCH) doesn't work here. 1476ifeq ($(ARCH), um) 1477CHECKSTACK_ARCH := $(SUBARCH) 1478else 1479CHECKSTACK_ARCH := $(ARCH) 1480endif 1481checkstack: 1482 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1483 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1484 1485kernelrelease: 1486 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1487 1488kernelversion: 1489 @echo $(KERNELVERSION) 1490 1491# Single targets 1492# --------------------------------------------------------------------------- 1493# Single targets are compatible with: 1494# - build with mixed source and output 1495# - build with separate output dir 'make O=...' 1496# - external modules 1497# 1498# target-dir => where to store outputfile 1499# build-dir => directory in kernel source tree to use 1500 1501ifeq ($(KBUILD_EXTMOD),) 1502 build-dir = $(patsubst %/,%,$(dir $@)) 1503 target-dir = $(dir $@) 1504else 1505 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1506 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1507 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1508endif 1509 1510%.s: %.c prepare scripts FORCE 1511 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1512%.i: %.c prepare scripts FORCE 1513 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1514%.o: %.c prepare scripts FORCE 1515 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1516%.lst: %.c prepare scripts FORCE 1517 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1518%.s: %.S prepare scripts FORCE 1519 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1520%.o: %.S prepare scripts FORCE 1521 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1522%.symtypes: %.c prepare scripts FORCE 1523 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1524 1525# Modules 1526/: prepare scripts FORCE 1527 $(cmd_crmodverdir) 1528 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1529 $(build)=$(build-dir) 1530%/: prepare scripts FORCE 1531 $(cmd_crmodverdir) 1532 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1533 $(build)=$(build-dir) 1534%.ko: prepare scripts FORCE 1535 $(cmd_crmodverdir) 1536 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1537 $(build)=$(build-dir) $(@:.ko=.o) 1538 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1539 1540# =========================================================================== 1541 1542quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1543 cmd_rmdirs = rm -rf $(rm-dirs) 1544 1545quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1546 cmd_rmfiles = rm -f $(rm-files) 1547 1548# Run depmod only if we have System.map and depmod is executable 1549quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1550 cmd_depmod = \ 1551 if [ -r System.map -a -x $(DEPMOD) ]; then \ 1552 $(DEPMOD) -ae -F System.map \ 1553 $(if $(strip $(INSTALL_MOD_PATH)), -b $(INSTALL_MOD_PATH) ) \ 1554 $(KERNELRELEASE); \ 1555 fi 1556 1557# Create temporary dir for module support files 1558# clean it up only when building all modules 1559cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1560 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 1561 1562a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ 1563 $(KBUILD_AFLAGS_KERNEL) \ 1564 $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \ 1565 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) 1566 1567quiet_cmd_as_o_S = AS $@ 1568cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< 1569 1570# read all saved command lines 1571 1572targets := $(wildcard $(sort $(targets))) 1573cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1574 1575ifneq ($(cmd_files),) 1576 $(cmd_files): ; # Do not try to update included dependency files 1577 include $(cmd_files) 1578endif 1579 1580# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir 1581# Usage: 1582# $(Q)$(MAKE) $(clean)=dir 1583clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj 1584 1585endif # skip-makefile 1586 1587PHONY += FORCE 1588FORCE: 1589 1590# Declare the contents of the .PHONY variable as phony. We keep that 1591# information in a variable so we can use it in if_changed and friends. 1592.PHONY: $(PHONY) 1593