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Makefile 52.1 KB
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  VERSION = 3
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  PATCHLEVEL = 2
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  SUBLEVEL = 0
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  EXTRAVERSION =
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  NAME = Saber-toothed Squirrel
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  # *DOCUMENTATION*
  # To see a list of typical targets execute "make help"
  # More info can be located in ./README
  # Comments in this file are targeted only to the developer, do not
  # expect to learn how to build the kernel reading this file.
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  # Do not:
  # o  use make's built-in rules and variables
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  #    (this increases performance and avoids hard-to-debug behaviour);
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  # o  print "Entering directory ...";
  MAKEFLAGS += -rR --no-print-directory
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  # Avoid funny character set dependencies
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  unexport LC_ALL
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  LC_COLLATE=C
  LC_NUMERIC=C
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  export LC_COLLATE LC_NUMERIC
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  # We are using a recursive build, so we need to do a little thinking
  # to get the ordering right.
  #
  # Most importantly: sub-Makefiles should only ever modify files in
  # their own directory. If in some directory we have a dependency on
  # a file in another dir (which doesn't happen often, but it's often
  # unavoidable when linking the built-in.o targets which finally
  # turn into vmlinux), we will call a sub make in that other dir, and
  # after that we are sure that everything which is in that other dir
  # is now up to date.
  #
  # The only cases where we need to modify files which have global
  # effects are thus separated out and done before the recursive
  # descending is started. They are now explicitly listed as the
  # prepare rule.
  
  # To put more focus on warnings, be less verbose as default
  # Use 'make V=1' to see the full commands
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  ifeq ("$(origin V)", "command line")
    KBUILD_VERBOSE = $(V)
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  endif
  ifndef KBUILD_VERBOSE
    KBUILD_VERBOSE = 0
  endif
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  # Call a source code checker (by default, "sparse") as part of the
  # C compilation.
  #
  # Use 'make C=1' to enable checking of only re-compiled files.
  # Use 'make C=2' to enable checking of *all* source files, regardless
  # of whether they are re-compiled or not.
  #
  # See the file "Documentation/sparse.txt" for more details, including
  # where to get the "sparse" utility.
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  ifeq ("$(origin C)", "command line")
    KBUILD_CHECKSRC = $(C)
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  endif
  ifndef KBUILD_CHECKSRC
    KBUILD_CHECKSRC = 0
  endif
  
  # Use make M=dir to specify directory of external module to build
  # Old syntax make ... SUBDIRS=$PWD is still supported
  # Setting the environment variable KBUILD_EXTMOD take precedence
  ifdef SUBDIRS
    KBUILD_EXTMOD ?= $(SUBDIRS)
  endif
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  ifeq ("$(origin M)", "command line")
    KBUILD_EXTMOD := $(M)
  endif
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  # kbuild supports saving output files in a separate directory.
  # To locate output files in a separate directory two syntaxes are supported.
  # In both cases the working directory must be the root of the kernel src.
  # 1) O=
  # Use "make O=dir/to/store/output/files/"
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  #
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  # 2) Set KBUILD_OUTPUT
  # Set the environment variable KBUILD_OUTPUT to point to the directory
  # where the output files shall be placed.
  # export KBUILD_OUTPUT=dir/to/store/output/files/
  # make
  #
  # The O= assignment takes precedence over the KBUILD_OUTPUT environment
  # variable.
  
  
  # KBUILD_SRC is set on invocation of make in OBJ directory
  # KBUILD_SRC is not intended to be used by the regular user (for now)
  ifeq ($(KBUILD_SRC),)
  
  # OK, Make called in directory where kernel src resides
  # Do we want to locate output files in a separate directory?
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  ifeq ("$(origin O)", "command line")
    KBUILD_OUTPUT := $(O)
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  endif
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  ifeq ("$(origin W)", "command line")
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    export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
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  endif
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  # That's our default target when none is given on the command line
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  PHONY := _all
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  _all:
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  # Cancel implicit rules on top Makefile
  $(CURDIR)/Makefile Makefile: ;
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  ifneq ($(KBUILD_OUTPUT),)
  # Invoke a second make in the output directory, passing relevant variables
  # check that the output directory actually exists
  saved-output := $(KBUILD_OUTPUT)
  KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
  $(if $(KBUILD_OUTPUT),, \
       $(error output directory "$(saved-output)" does not exist))
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  PHONY += $(MAKECMDGOALS) sub-make
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  $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
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  	$(Q)@:
  
  sub-make: FORCE
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  	$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
  	KBUILD_SRC=$(CURDIR) \
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  	KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
  	$(filter-out _all sub-make,$(MAKECMDGOALS))
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  # Leave processing to above invocation of make
  skip-makefile := 1
  endif # ifneq ($(KBUILD_OUTPUT),)
  endif # ifeq ($(KBUILD_SRC),)
  
  # We process the rest of the Makefile if this is the final invocation of make
  ifeq ($(skip-makefile),)
  
  # If building an external module we do not care about the all: rule
  # but instead _all depend on modules
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  PHONY += all
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  ifeq ($(KBUILD_EXTMOD),)
  _all: all
  else
  _all: modules
  endif
  
  srctree		:= $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
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  objtree		:= $(CURDIR)
  src		:= $(srctree)
  obj		:= $(objtree)
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  VPATH		:= $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
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  export srctree objtree VPATH
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  # SUBARCH tells the usermode build what the underlying arch is.  That is set
  # first, and if a usermode build is happening, the "ARCH=um" on the command
  # line overrides the setting of ARCH below.  If a native build is happening,
  # then ARCH is assigned, getting whatever value it gets normally, and 
  # SUBARCH is subsequently ignored.
  
  SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
  				  -e s/arm.*/arm/ -e s/sa110/arm/ \
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  				  -e s/s390x/s390/ -e s/parisc64/parisc/ \
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  				  -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
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  				  -e s/sh[234].*/sh/ )
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  # Cross compiling and selecting different set of gcc/bin-utils
  # ---------------------------------------------------------------------------
  #
  # When performing cross compilation for other architectures ARCH shall be set
  # to the target architecture. (See arch/* for the possibilities).
  # ARCH can be set during invocation of make:
  # make ARCH=ia64
  # Another way is to have ARCH set in the environment.
  # The default ARCH is the host where make is executed.
  
  # CROSS_COMPILE specify the prefix used for all executables used
  # during compilation. Only gcc and related bin-utils executables
  # are prefixed with $(CROSS_COMPILE).
  # CROSS_COMPILE can be set on the command line
  # make CROSS_COMPILE=ia64-linux-
  # Alternatively CROSS_COMPILE can be set in the environment.
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  # A third alternative is to store a setting in .config so that plain
  # "make" in the configured kernel build directory always uses that.
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  # Default value for CROSS_COMPILE is not to prefix executables
  # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
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  export KBUILD_BUILDHOST := $(SUBARCH)
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  ARCH		?= $(SUBARCH)
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  CROSS_COMPILE	?= $(CONFIG_CROSS_COMPILE:"%"=%)
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  # Architecture as present in compile.h
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  UTS_MACHINE 	:= $(ARCH)
  SRCARCH 	:= $(ARCH)
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  # Additional ARCH settings for x86
  ifeq ($(ARCH),i386)
          SRCARCH := x86
  endif
  ifeq ($(ARCH),x86_64)
          SRCARCH := x86
  endif
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  # Additional ARCH settings for sparc
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  ifeq ($(ARCH),sparc32)
         SRCARCH := sparc
  endif
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  ifeq ($(ARCH),sparc64)
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         SRCARCH := sparc
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  endif
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  # Additional ARCH settings for sh
  ifeq ($(ARCH),sh64)
         SRCARCH := sh
  endif
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  # Additional ARCH settings for tile
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  ifeq ($(ARCH),tilepro)
         SRCARCH := tile
  endif
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  ifeq ($(ARCH),tilegx)
         SRCARCH := tile
  endif
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  # Where to locate arch specific headers
  hdr-arch  := $(SRCARCH)
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  ifeq ($(ARCH),m68knommu)
         hdr-arch  := m68k
  endif
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  KCONFIG_CONFIG	?= .config
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  export KCONFIG_CONFIG
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  # SHELL used by kbuild
  CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
  	  else if [ -x /bin/bash ]; then echo /bin/bash; \
  	  else echo sh; fi ; fi)
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  HOSTCC       = gcc
  HOSTCXX      = g++
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  HOSTCFLAGS   = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer
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  HOSTCXXFLAGS = -O2
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  # Decide whether to build built-in, modular, or both.
  # Normally, just do built-in.
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  KBUILD_MODULES :=
  KBUILD_BUILTIN := 1
  
  #	If we have only "make modules", don't compile built-in objects.
  #	When we're building modules with modversions, we need to consider
  #	the built-in objects during the descend as well, in order to
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  #	make sure the checksums are up to date before we record them.
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  ifeq ($(MAKECMDGOALS),modules)
    KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
  endif
  
  #	If we have "make <whatever> modules", compile modules
  #	in addition to whatever we do anyway.
  #	Just "make" or "make all" shall build modules as well
  
  ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
    KBUILD_MODULES := 1
  endif
  
  ifeq ($(MAKECMDGOALS),)
    KBUILD_MODULES := 1
  endif
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  export KBUILD_MODULES KBUILD_BUILTIN
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  export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
  
  # Beautify output
  # ---------------------------------------------------------------------------
  #
  # Normally, we echo the whole command before executing it. By making
  # that echo $($(quiet)$(cmd)), we now have the possibility to set
  # $(quiet) to choose other forms of output instead, e.g.
  #
  #         quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
  #         cmd_cc_o_c       = $(CC) $(c_flags) -c -o $@ $<
  #
  # If $(quiet) is empty, the whole command will be printed.
  # If it is set to "quiet_", only the short version will be printed. 
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  # If it is set to "silent_", nothing will be printed at all, since
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  # the variable $(silent_cmd_cc_o_c) doesn't exist.
  #
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  # A simple variant is to prefix commands with $(Q) - that's useful
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  # for commands that shall be hidden in non-verbose mode.
  #
  #	$(Q)ln $@ :<
  #
  # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
  # If KBUILD_VERBOSE equals 1 then the above command is displayed.
  
  ifeq ($(KBUILD_VERBOSE),1)
    quiet =
    Q =
  else
    quiet=quiet_
    Q = @
  endif
  
  # If the user is running make -s (silent mode), suppress echoing of
  # commands
  
  ifneq ($(findstring s,$(MAKEFLAGS)),)
    quiet=silent_
  endif
  
  export quiet Q KBUILD_VERBOSE
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  # Look for make include files relative to root of kernel src
  MAKEFLAGS += --include-dir=$(srctree)
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  # We need some generic definitions (do not try to remake the file).
  $(srctree)/scripts/Kbuild.include: ;
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  include $(srctree)/scripts/Kbuild.include
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  # Make variables (CC, etc...)
  
  AS		= $(CROSS_COMPILE)as
  LD		= $(CROSS_COMPILE)ld
  CC		= $(CROSS_COMPILE)gcc
  CPP		= $(CC) -E
  AR		= $(CROSS_COMPILE)ar
  NM		= $(CROSS_COMPILE)nm
  STRIP		= $(CROSS_COMPILE)strip
  OBJCOPY		= $(CROSS_COMPILE)objcopy
  OBJDUMP		= $(CROSS_COMPILE)objdump
  AWK		= awk
  GENKSYMS	= scripts/genksyms/genksyms
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  INSTALLKERNEL  := installkernel
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  DEPMOD		= /sbin/depmod
  KALLSYMS	= scripts/kallsyms
  PERL		= perl
  CHECK		= sparse
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  CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
  		  -Wbitwise -Wno-return-void $(CF)
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  CFLAGS_MODULE   =
  AFLAGS_MODULE   =
  LDFLAGS_MODULE  =
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  CFLAGS_KERNEL	=
  AFLAGS_KERNEL	=
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  CFLAGS_GCOV	= -fprofile-arcs -ftest-coverage
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  # Use LINUXINCLUDE when you must reference the include/ directory.
  # Needed to be compatible with the O= option
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  LINUXINCLUDE    := -I$(srctree)/arch/$(hdr-arch)/include \
                     -Iarch/$(hdr-arch)/include/generated -Iinclude \
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                     $(if $(KBUILD_SRC), -I$(srctree)/include) \
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                     -include $(srctree)/include/linux/kconfig.h
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  KBUILD_CPPFLAGS := -D__KERNEL__
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  KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
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  		   -fno-strict-aliasing -fno-common \
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  		   -Werror-implicit-function-declaration \
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  		   -Wno-format-security \
  		   -fno-delete-null-pointer-checks
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  KBUILD_AFLAGS_KERNEL :=
  KBUILD_CFLAGS_KERNEL :=
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  KBUILD_AFLAGS   := -D__ASSEMBLY__
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  KBUILD_AFLAGS_MODULE  := -DMODULE
  KBUILD_CFLAGS_MODULE  := -DMODULE
  KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
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  # Read KERNELRELEASE from include/config/kernel.release (if it exists)
  KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
cacd54ef4   Michal Marek   kbuild: Fix KERNE...
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  KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
cb58455c4   Sam Ravnborg   kbuild: KERNELREL...
364

070b98bfd   Sam Ravnborg   kbuild: trivial f...
365
  export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
80ef88d6d   Sam Ravnborg   x86: simplify "ma...
366
  export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
caa27b66b   Sam Ravnborg   kbuild: use INSTA...
367
368
  export CPP AR NM STRIP OBJCOPY OBJDUMP
  export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE
070b98bfd   Sam Ravnborg   kbuild: trivial f...
369
  export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
370

06c5040cd   Sam Ravnborg   kbuild: enable 'm...
371
  export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
2521f2c22   Peter Oberparleiter   gcov: add gcov pr...
372
  export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
222d394d3   Sam Ravnborg   kbuild: enable 'm...
373
  export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
6588169d5   Sam Ravnborg   kbuild: allow ass...
374
  export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
80c00ba94   Sam Ravnborg   kbuild: allow ass...
375
  export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
40df759e2   Michal Marek   kbuild: Fix build...
376
  export KBUILD_ARFLAGS
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
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  # When compiling out-of-tree modules, put MODVERDIR in the module
  # tree rather than in the kernel tree. The kernel tree might
  # even be read-only.
  export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
382
  # Files to ignore in find ... statements
406119f49   Trond Myklebust   [PATCH] Ensure th...
383
384
  RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o
  export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
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  # ===========================================================================
  # Rules shared between *config targets and build targets
  
  # Basic helpers built in scripts/
4f1933620   Paul Smith   kbuild: change kb...
390
  PHONY += scripts_basic
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
391
392
  scripts_basic:
  	$(Q)$(MAKE) $(build)=scripts/basic
638adb056   Steven Rostedt   tracing: Only pri...
393
  	$(Q)rm -f .tmp_quiet_recordmcount
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
394

cd05e6bdc   Jan Beulich   [PATCH] kbuild: f...
395
396
  # To avoid any implicit rule to kick in, define an empty command.
  scripts/basic/%: scripts_basic ;
4f1933620   Paul Smith   kbuild: change kb...
397
  PHONY += outputmakefile
fd5f0cd6b   Jan Beulich   kbuild: Do not ov...
398
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400
  # outputmakefile generates a Makefile in the output directory, if using a
  # separate output directory. This allows convenient use of make in the
  # output directory.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
401
  outputmakefile:
fd5f0cd6b   Jan Beulich   kbuild: Do not ov...
402
  ifneq ($(KBUILD_SRC),)
929799973   Andi Kleen   kbuild: create th...
403
  	$(Q)ln -fsn $(srctree) source
fd5f0cd6b   Jan Beulich   kbuild: Do not ov...
404
405
406
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
  	    $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
407

d8ecc5cd8   Sam Ravnborg   kbuild: asm-gener...
408
409
410
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  # Support for using generic headers in asm-generic
  PHONY += asm-generic
  asm-generic:
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
  	            obj=arch/$(SRCARCH)/include/generated/asm
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
413
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  # To make sure we do not include .config for any of the *config targets
  # catch them early, and hand them over to scripts/kconfig/Makefile
  # It is allowed to specify more targets when calling make, including
  # mixing *config targets and build targets.
070b98bfd   Sam Ravnborg   kbuild: trivial f...
417
  # For example 'make oldconfig all'.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
418
419
  # Detect when mixed targets is specified, and make a second invocation
  # of make so .config is not included in this case either (for *config).
3eb3c740f   Roman Zippel   [PATCH] fix linux...
420
  no-dot-config-targets := clean mrproper distclean \
f4ed1009f   Jianbin Kang   kbuild: add GNU G...
421
  			 cscope gtags TAGS tags help %docs check% coccicheck \
3eb3c740f   Roman Zippel   [PATCH] fix linux...
422
  			 include/linux/version.h headers_% \
4aed2fd8e   Linus Torvalds   Merge branch 'per...
423
  			 kernelversion %src-pkg
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
424
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  config-targets := 0
  mixed-targets  := 0
  dot-config     := 1
  
  ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
  	ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
  		dot-config := 0
  	endif
  endif
  
  ifeq ($(KBUILD_EXTMOD),)
          ifneq ($(filter config %config,$(MAKECMDGOALS)),)
                  config-targets := 1
                  ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
                          mixed-targets := 1
                  endif
          endif
  endif
  
  ifeq ($(mixed-targets),1)
  # ===========================================================================
  # We're called with mixed targets (*config and build targets).
  # Handle them one by one.
  
  %:: FORCE
  	$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
  
  else
  ifeq ($(config-targets),1)
  # ===========================================================================
  # *config targets only - make sure prerequisites are updated, and descend
  # in scripts/kconfig to make the *config target
  
  # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
  # KBUILD_DEFCONFIG may point out an alternative default configuration
  # used for 'make defconfig'
74b469f2e   Sam Ravnborg   x86: move i386 an...
461
  include $(srctree)/arch/$(SRCARCH)/Makefile
61bee2044   Al Viro   x86, um: get rid ...
462
  export KBUILD_DEFCONFIG KBUILD_KCONFIG
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
463

31110ebbe   Sam Ravnborg   kbuild: fix make ...
464
465
466
467
468
  config: scripts_basic outputmakefile FORCE
  	$(Q)mkdir -p include/linux include/config
  	$(Q)$(MAKE) $(build)=scripts/kconfig $@
  
  %config: scripts_basic outputmakefile FORCE
c955ccafc   Roman Zippel   kconfig: fix .con...
469
  	$(Q)mkdir -p include/linux include/config
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
470
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  	$(Q)$(MAKE) $(build)=scripts/kconfig $@
  
  else
  # ===========================================================================
  # Build targets only - this includes vmlinux, arch specific targets, clean
  # targets and others. In general all targets except *config targets.
  
  ifeq ($(KBUILD_EXTMOD),)
  # Additional helpers built in scripts/
  # Carefully list dependencies so we do not try to build scripts twice
070b98bfd   Sam Ravnborg   kbuild: trivial f...
480
  # in parallel
4f1933620   Paul Smith   kbuild: change kb...
481
  PHONY += scripts
bc081dd6e   Michal Marek   kbuild: generate ...
482
  scripts: scripts_basic include/config/auto.conf include/config/tristate.conf
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
483
  	$(Q)$(MAKE) $(build)=$(@)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
484
485
  # Objects we will link into vmlinux / subdirs we need to visit
  init-y		:= init/
4d2acfbfd   David Woodhouse   firmware: Add CON...
486
  drivers-y	:= drivers/ sound/ firmware/
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
487
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  net-y		:= net/
  libs-y		:= lib/
  core-y		:= usr/
  endif # KBUILD_EXTMOD
  
  ifeq ($(dot-config),1)
9ee4e3365   Sam Ravnborg   kbuild: external ...
493
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  # Read in config
  -include include/config/auto.conf
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
495

9ee4e3365   Sam Ravnborg   kbuild: external ...
496
  ifeq ($(KBUILD_EXTMOD),)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
497
498
  # Read in dependencies to all Kconfig* files, make sure to run
  # oldconfig if changes are detected.
c955ccafc   Roman Zippel   kconfig: fix .con...
499
  -include include/config/auto.conf.cmd
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
500

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
501
  # To avoid any implicit rule to kick in, define an empty command
14cdd3c40   Roman Zippel   kconfig: KCONFIG_...
502
  $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
503

c955ccafc   Roman Zippel   kconfig: fix .con...
504
  # If .config is newer than include/config/auto.conf, someone tinkered
752625cff   Sam Ravnborg   kbuild: always ru...
505
  # with it and forgot to run make oldconfig.
070b98bfd   Sam Ravnborg   kbuild: trivial f...
506
  # if auto.conf.cmd is missing then we are probably in a cleaned tree so
752625cff   Sam Ravnborg   kbuild: always ru...
507
  # we execute the config step to be sure to catch updated Kconfig files
bc081dd6e   Michal Marek   kbuild: generate ...
508
  include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
509
510
  	$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
  else
264a26838   Sam Ravnborg   kbuild: move auto...
511
  # external modules needs include/generated/autoconf.h and include/config/auto.conf
9ee4e3365   Sam Ravnborg   kbuild: external ...
512
513
514
515
  # but do not care if they are up-to-date. Use auto.conf to trigger the test
  PHONY += include/config/auto.conf
  
  include/config/auto.conf:
264a26838   Sam Ravnborg   kbuild: move auto...
516
  	$(Q)test -e include/generated/autoconf.h -a -e $@ || (		\
9ee4e3365   Sam Ravnborg   kbuild: external ...
517
518
  	echo;								\
  	echo "  ERROR: Kernel configuration is invalid.";		\
264a26838   Sam Ravnborg   kbuild: move auto...
519
  	echo "         include/generated/autoconf.h or $@ are missing.";\
9ee4e3365   Sam Ravnborg   kbuild: external ...
520
521
522
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524
  	echo "         Run 'make oldconfig && make prepare' on kernel src to fix it.";	\
  	echo;								\
  	/bin/false)
  
  endif # KBUILD_EXTMOD
c955ccafc   Roman Zippel   kconfig: fix .con...
525

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
526
527
  else
  # Dummy target needed, because used as prerequisite
c955ccafc   Roman Zippel   kconfig: fix .con...
528
  include/config/auto.conf: ;
9ee4e3365   Sam Ravnborg   kbuild: external ...
529
  endif # $(dot-config)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
530
531
532
533
  
  # The all: target is the default when no target is given on the
  # command line.
  # This allow a user to issue only 'make' to build a kernel including modules
c84471614   Michal Marek   Makefile: clarify...
534
  # Defaults to vmlinux, but the arch makefile usually adds further targets
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
535
536
537
  all: vmlinux
  
  ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
538
  KBUILD_CFLAGS	+= -Os
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
539
  else
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
540
  KBUILD_CFLAGS	+= -O2
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
541
  endif
bef5b54bd   Ralf Baechle   Fix MIPS cross-co...
542
  include $(srctree)/arch/$(SRCARCH)/Makefile
08f67461c   Mike Frysinger   kbuild: fix detec...
543
  ifneq ($(CONFIG_FRAME_WARN),0)
35bb5b1e0   Andi Kleen   Add option to ena...
544
545
  KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
  endif
e06b8b98d   Sam Ravnborg   kbuild: allow -fs...
546
  # Force gcc to behave correct even for buggy distributions
5d707e9c8   Tejun Heo   stackprotector: u...
547
  ifndef CONFIG_CC_STACKPROTECTOR
e06b8b98d   Sam Ravnborg   kbuild: allow -fs...
548
  KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
5d707e9c8   Tejun Heo   stackprotector: u...
549
  endif
e06b8b98d   Sam Ravnborg   kbuild: allow -fs...
550

af0e5d565   Dave Jones   kbuild: Disable -...
551
552
  # This warning generated too much noise in a regular build.
  # Use make W=1 to enable this warning (see scripts/Makefile.build)
8417da6f2   Michal Marek   kbuild: Fix passi...
553
  KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
af0e5d565   Dave Jones   kbuild: Disable -...
554

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
555
  ifdef CONFIG_FRAME_POINTER
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
556
  KBUILD_CFLAGS	+= -fno-omit-frame-pointer -fno-optimize-sibling-calls
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
557
  else
7e9501fde   Rabin Vincent   ARM: 6312/1: ftra...
558
559
560
561
562
563
  # Some targets (ARM with Thumb2, for example), can't be built with frame
  # pointers.  For those, we don't have FUNCTION_TRACER automatically
  # select FRAME_POINTER.  However, FUNCTION_TRACER adds -pg, and this is
  # incompatible with -fomit-frame-pointer with current GCC, so we don't use
  # -fomit-frame-pointer with FUNCTION_TRACER.
  ifndef CONFIG_FUNCTION_TRACER
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
564
  KBUILD_CFLAGS	+= -fomit-frame-pointer
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
565
  endif
7e9501fde   Rabin Vincent   ARM: 6312/1: ftra...
566
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
567
568
  
  ifdef CONFIG_DEBUG_INFO
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
569
  KBUILD_CFLAGS	+= -g
222d394d3   Sam Ravnborg   kbuild: enable 'm...
570
  KBUILD_AFLAGS	+= -gdwarf-2
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
571
  endif
d6f4ceb79   Andi Kleen   Kbuild: Add optio...
572
573
574
  ifdef CONFIG_DEBUG_INFO_REDUCED
  KBUILD_CFLAGS 	+= $(call cc-option, -femit-struct-debug-baseonly)
  endif
606576ce8   Steven Rostedt   ftrace: rename FT...
575
  ifdef CONFIG_FUNCTION_TRACER
16444a8a4   Arnaldo Carvalho de Melo   ftrace: add basic...
576
  KBUILD_CFLAGS	+= -pg
72441cb1f   Steven Rostedt   ftrace/x86: Add s...
577
  ifdef CONFIG_DYNAMIC_FTRACE
cf4db2597   Steven Rostedt   ftrace: Rename co...
578
  	ifdef CONFIG_HAVE_C_RECORDMCOUNT
72441cb1f   Steven Rostedt   ftrace/x86: Add s...
579
580
581
582
  		BUILD_C_RECORDMCOUNT := y
  		export BUILD_C_RECORDMCOUNT
  	endif
  endif
16444a8a4   Arnaldo Carvalho de Melo   ftrace: add basic...
583
  endif
91341d4b2   Sam Ravnborg   kbuild: introduce...
584
585
586
587
  # We trigger additional mismatches with less inlining
  ifdef CONFIG_DEBUG_SECTION_MISMATCH
  KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
  endif
e8e699317   Sam Ravnborg   [PATCH] kbuild: S...
588
  # arch Makefile may override CC so keep this after arch Makefile is included
e8f5bdb02   Rik van Riel   [PATCH] Makefile ...
589
  NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
e8e699317   Sam Ravnborg   [PATCH] kbuild: S...
590
  CHECKFLAGS     += $(NOSTDINC_FLAGS)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
591
  # warn about C99 declaration after statement
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
592
  KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
593

070b98bfd   Sam Ravnborg   kbuild: trivial f...
594
  # disable pointer signed / unsigned warnings in gcc 4.0
8417da6f2   Michal Marek   kbuild: Fix passi...
595
  KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
596

fe8d0a410   Kirill Smelkov   kbuild: fix a few...
597
  # disable invalid "can't wrap" optimizations for signed / pointers
a137802ee   Linus Torvalds   Don't use '-fwrap...
598
  KBUILD_CFLAGS	+= $(call cc-option,-fno-strict-overflow)
d0115552c   Linus Torvalds   Move cc-option to...
599

8f7f5c9fc   Andi Kleen   kbuild: set -fcon...
600
601
  # conserve stack if available
  KBUILD_CFLAGS   += $(call cc-option,-fconserve-stack)
40df759e2   Michal Marek   kbuild: Fix build...
602
603
  # use the deterministic mode of AR if available
  KBUILD_ARFLAGS := $(call ar-option,D)
bf5438fca   Jason Baron   jump label: Base ...
604
605
606
607
  # check for 'asm goto'
  ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
  	KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
  endif
06c5040cd   Sam Ravnborg   kbuild: enable 'm...
608
  # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
69ee0b352   Sam Ravnborg   kbuild: do not pi...
609
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  # But warn user when we do so
  warn-assign = \
  $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)")
  
  ifneq ($(KCPPFLAGS),)
          $(call warn-assign,CPPFLAGS)
          KBUILD_CPPFLAGS += $(KCPPFLAGS)
  endif
  ifneq ($(KAFLAGS),)
          $(call warn-assign,AFLAGS)
          KBUILD_AFLAGS += $(KAFLAGS)
  endif
  ifneq ($(KCFLAGS),)
          $(call warn-assign,CFLAGS)
          KBUILD_CFLAGS += $(KCFLAGS)
  endif
52bcc3308   Sam Ravnborg   kbuild: enable us...
625

18991197b   Roland McGrath   Use --build-id ld...
626
627
  # Use --build-id when available.
  LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
f86fd3066   Sam Ravnborg   kbuild: rename ld...
628
  			      $(call cc-ldoption, -Wl$(comma)--build-id,))
6588169d5   Sam Ravnborg   kbuild: allow ass...
629
  KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
18991197b   Roland McGrath   Use --build-id ld...
630
  LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
5d7d18f5b   David Howells   kbuild: make it p...
631
  ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
d79a27195   Andi Kleen   kbuild: Check if ...
632
  LDFLAGS_vmlinux	+= $(call ld-option, -X,)
5d7d18f5b   David Howells   kbuild: make it p...
633
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
634
  # Default kernel image to build when no specific target is given.
070b98bfd   Sam Ravnborg   kbuild: trivial f...
635
  # KBUILD_IMAGE may be overruled on the command line or
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
636
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638
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648
  # set in the environment
  # Also any assignments in arch/$(ARCH)/Makefile take precedence over
  # this default value
  export KBUILD_IMAGE ?= vmlinux
  
  #
  # INSTALL_PATH specifies where to place the updated kernel and system map
  # images. Default is /boot, but you can set it to other values
  export	INSTALL_PATH ?= /boot
  
  #
  # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
  # relocations required by build roots.  This is not defined in the
070b98bfd   Sam Ravnborg   kbuild: trivial f...
649
  # makefile but the argument can be passed to make if needed.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
650
  #
df9df036d   Sam Ravnborg   kbuild: fix 'make...
651
  MODLIB	= $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
652
  export MODLIB
ac031f26e   Theodore Ts'o   kbuild: add optio...
653
  #
2ea038917   Sam Ravnborg   Revert "kbuild: s...
654
655
656
  #  INSTALL_MOD_STRIP, if defined, will cause modules to be
  #  stripped after they are installed.  If INSTALL_MOD_STRIP is '1', then
  #  the default option --strip-debug will be used.  Otherwise,
177b241d0   Gilles Espinasse   kbuild, mtd, net:...
657
  #  INSTALL_MOD_STRIP value will be used as the options to the strip command.
2ea038917   Sam Ravnborg   Revert "kbuild: s...
658

ac031f26e   Theodore Ts'o   kbuild: add optio...
659
660
  ifdef INSTALL_MOD_STRIP
  ifeq ($(INSTALL_MOD_STRIP),1)
2ea038917   Sam Ravnborg   Revert "kbuild: s...
661
  mod_strip_cmd = $(STRIP) --strip-debug
ac031f26e   Theodore Ts'o   kbuild: add optio...
662
  else
2ea038917   Sam Ravnborg   Revert "kbuild: s...
663
  mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
ac031f26e   Theodore Ts'o   kbuild: add optio...
664
665
  endif # INSTALL_MOD_STRIP=1
  else
2ea038917   Sam Ravnborg   Revert "kbuild: s...
666
  mod_strip_cmd = true
ac031f26e   Theodore Ts'o   kbuild: add optio...
667
668
  endif # INSTALL_MOD_STRIP
  export mod_strip_cmd
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
669
670
  
  ifeq ($(KBUILD_EXTMOD),)
3a65dfe8c   Jens Axboe   [BLOCK] Move all ...
671
  core-y		+= kernel/ mm/ fs/ ipc/ security/ crypto/ block/
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
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  vmlinux-dirs	:= $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
  		     $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
  		     $(net-y) $(net-m) $(libs-y) $(libs-m)))
  
  vmlinux-alldirs	:= $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
  		     $(init-n) $(init-) \
  		     $(core-n) $(core-) $(drivers-n) $(drivers-) \
  		     $(net-n)  $(net-)  $(libs-n)    $(libs-))))
  
  init-y		:= $(patsubst %/, %/built-in.o, $(init-y))
  core-y		:= $(patsubst %/, %/built-in.o, $(core-y))
  drivers-y	:= $(patsubst %/, %/built-in.o, $(drivers-y))
  net-y		:= $(patsubst %/, %/built-in.o, $(net-y))
  libs-y1		:= $(patsubst %/, %/lib.a, $(libs-y))
  libs-y2		:= $(patsubst %/, %/built-in.o, $(libs-y))
  libs-y		:= $(libs-y1) $(libs-y2)
  
  # Build vmlinux
  # ---------------------------------------------------------------------------
070b98bfd   Sam Ravnborg   kbuild: trivial f...
692
  # vmlinux is built from the objects selected by $(vmlinux-init) and
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
693
  # $(vmlinux-main). Most are built-in.o files from top-level directories
2462566f2   Uwe Zeisberger   kbuild: add a mis...
694
  # in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
695
696
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  # Ordering when linking is important, and $(vmlinux-init) must be first.
  #
  # vmlinux
  #   ^
  #   |
  #   +-< $(vmlinux-init)
  #   |   +--< init/version.o + more
  #   |
  #   +--< $(vmlinux-main)
  #   |    +--< driver/built-in.o mm/built-in.o + more
  #   |
  #   +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
  #
  # vmlinux version (uname -v) cannot be updated during normal
  # descending-into-subdirs phase since we do not yet know if we need to
  # update vmlinux.
  # Therefore this step is delayed until just before final link of vmlinux -
  # except in the kallsyms case where it is done just before adding the
  # symbols to the kernel.
  #
  # System.map is generated to document addresses of all kernel symbols
  
  vmlinux-init := $(head-y) $(init-y)
  vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
  vmlinux-all  := $(vmlinux-init) $(vmlinux-main)
6752ed90d   Thomas Gleixner   Kbuild: allow arc...
720
  vmlinux-lds  := arch/$(SRCARCH)/kernel/vmlinux.lds
85bd2fddd   Sam Ravnborg   kbuild: fix secti...
721
  export KBUILD_VMLINUX_OBJS := $(vmlinux-all)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
722
723
724
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  # Rule to link vmlinux - also used during CONFIG_KALLSYMS
  # May be overridden by arch/$(ARCH)/Makefile
  quiet_cmd_vmlinux__ ?= LD      $@
        cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
        -T $(vmlinux-lds) $(vmlinux-init)                          \
        --start-group $(vmlinux-main) --end-group                  \
741f98fe2   Sam Ravnborg   kbuild: do sectio...
729
        $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
730
731
732
733
  
  # Generate new vmlinux version
  quiet_cmd_vmlinux_version = GEN     .version
        cmd_vmlinux_version = set -e;                     \
4e25d8bb9   Jan Beulich   [PATCH] kbuild: a...
734
735
736
737
738
739
740
  	if [ ! -r .version ]; then			\
  	  rm -f .version;				\
  	  echo 1 >.version;				\
  	else						\
  	  mv .version .old_version;			\
  	  expr 0$$(cat .old_version) + 1 >.version;	\
  	fi;						\
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
741
742
743
  	$(MAKE) $(build)=init
  
  # Generate System.map
070b98bfd   Sam Ravnborg   kbuild: trivial f...
744
  quiet_cmd_sysmap = SYSMAP
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
745
746
747
748
749
        cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
  
  # Link of vmlinux
  # If CONFIG_KALLSYMS is set .version is already updated
  # Generate System.map and verify that the content is consistent
39ca371c4   Mark Rustad   [PATCH] kbuild: E...
750
751
  # Use + in front of the vmlinux_version rule to silent warning with make -j2
  # First command is ':' to allow us to use + in front of the rule
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
752
  define rule_vmlinux__
39ca371c4   Mark Rustad   [PATCH] kbuild: E...
753
  	:
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
754
755
756
757
  	$(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
  
  	$(call cmd,vmlinux__)
  	$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
4635281c8   Sam Ravnborg   kbuild: preperly ...
758
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  	$(Q)$(if $($(quiet)cmd_sysmap),                                      \
  	  echo '  $($(quiet)cmd_sysmap)  System.map' &&)                     \
  	$(cmd_sysmap) $@ System.map;                                         \
  	if [ $$? -ne 0 ]; then                                               \
  		rm -f $@;                                                    \
  		/bin/false;                                                  \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
764
765
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767
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  	fi;
  	$(verify_kallsyms)
  endef
  
  
  ifdef CONFIG_KALLSYMS
  # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
  # It's a three stage process:
  # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
  #   empty
  #   Running kallsyms on that gives us .tmp_kallsyms1.o with
  #   the right size - vmlinux version (uname -v) is updated during this step
  # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
  #   but due to the added section, some addresses have shifted.
  #   From here, we generate a correct .tmp_kallsyms2.o
  # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
  # o Verify that the System.map from vmlinux matches the map from
  #   .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
1e2795a11   Artem Bityutskiy   kbuild: move KALL...
782
  # o If 'make KALLSYMS_EXTRA_PASS=1" was used, do an extra pass using
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
783
784
785
  #   .tmp_vmlinux3 and .tmp_kallsyms3.o.  This is only meant as a
  #   temporary bypass to allow the kernel to be built while the
  #   maintainers work out what went wrong with kallsyms.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
786
  last_kallsyms := 2
1e2795a11   Artem Bityutskiy   kbuild: move KALL...
787
788
789
790
791
  
  ifdef KALLSYMS_EXTRA_PASS
  ifneq ($(KALLSYMS_EXTRA_PASS),0)
  last_kallsyms := 3
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
792
793
794
795
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  endif
  
  kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
  
  define verify_kallsyms
4635281c8   Sam Ravnborg   kbuild: preperly ...
797
798
  	$(Q)$(if $($(quiet)cmd_sysmap),                                      \
  	  echo '  $($(quiet)cmd_sysmap)  .tmp_System.map' &&)                \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
799
  	  $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
4635281c8   Sam Ravnborg   kbuild: preperly ...
800
801
  	$(Q)cmp -s System.map .tmp_System.map ||                             \
  		(echo Inconsistent kallsyms data;                            \
1e2795a11   Artem Bityutskiy   kbuild: move KALL...
802
803
  		 echo This is a bug - please report about it;                \
  		 echo Try "make KALLSYMS_EXTRA_PASS=1" as a workaround;      \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
804
805
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  		 rm .tmp_kallsyms* ; /bin/false )
  endef
  
  # Update vmlinux version before link
  # Use + in front of this rule to silent warning about make -j1
72ba47c1b   Sam Ravnborg   kbuild: silence m...
809
  # First command is ':' to allow us to use + in front of this rule
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
810
811
  cmd_ksym_ld = $(cmd_vmlinux__)
  define rule_ksym_ld
72ba47c1b   Sam Ravnborg   kbuild: silence m...
812
  	: 
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
813
814
815
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819
  	+$(call cmd,vmlinux_version)
  	$(call cmd,vmlinux__)
  	$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
  endef
  
  # Generate .S file with all kernel symbols
  quiet_cmd_kallsyms = KSYM    $@
2ea038917   Sam Ravnborg   Revert "kbuild: s...
820
821
        cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
                       $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
9bb482476   Jan Beulich   allow stripping o...
822

2ea038917   Sam Ravnborg   Revert "kbuild: s...
823
  .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
824
  	$(call if_changed_dep,as_o_S)
2ea038917   Sam Ravnborg   Revert "kbuild: s...
825
  .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
826
827
828
  	$(call cmd,kallsyms)
  
  # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
2ea038917   Sam Ravnborg   Revert "kbuild: s...
829
830
  .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
  	$(call if_changed_rule,ksym_ld)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
831

2ea038917   Sam Ravnborg   Revert "kbuild: s...
832
833
  .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
  	$(call if_changed,vmlinux__)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
834

2ea038917   Sam Ravnborg   Revert "kbuild: s...
835
836
  .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
  	$(call if_changed,vmlinux__)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
837
838
839
  
  # Needs to visit scripts/ before $(KALLSYMS) can be used.
  $(KALLSYMS): scripts ;
33bc25eae   Sam Ravnborg   kbuild: Add targe...
840
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842
843
844
845
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848
  # Generate some data for debugging strange kallsyms problems
  debug_kallsyms: .tmp_map$(last_kallsyms)
  
  .tmp_map%: .tmp_vmlinux% FORCE
  	($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
  
  .tmp_map3: .tmp_map2
  
  .tmp_map2: .tmp_map1
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
849
  endif # ifdef CONFIG_KALLSYMS
741f98fe2   Sam Ravnborg   kbuild: do sectio...
850
851
852
853
854
  # Do modpost on a prelinked vmlinux. The finally linked vmlinux has
  # relevant sections renamed as per the linker script.
  quiet_cmd_vmlinux-modpost = LD      $@
        cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@                          \
  	 $(vmlinux-init) --start-group $(vmlinux-main) --end-group             \
90ebd878a   Sam Ravnborg   kbuild: fix vmlin...
855
  	 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
741f98fe2   Sam Ravnborg   kbuild: do sectio...
856
857
858
859
860
861
  define rule_vmlinux-modpost
  	:
  	+$(call cmd,vmlinux-modpost)
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
  	$(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd
  endef
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
862
  # vmlinux image - including updated kernel symbols
310f8243a   Sam Ravnborg   kbuild: link vmli...
863
  vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE
0f836e5fe   David Woodhouse   [PATCH] Add CONFI...
864
  ifdef CONFIG_HEADERS_CHECK
0e7af8d04   David Woodhouse   [PATCH] Fix heade...
865
  	$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
0f836e5fe   David Woodhouse   [PATCH] Add CONFI...
866
  endif
267c4025f   Mathieu Desnoyers   markers: Add samp...
867
868
869
  ifdef CONFIG_SAMPLES
  	$(Q)$(MAKE) $(build)=samples
  endif
3794f3e81   Randy Dunlap   docsrc: build Doc...
870
871
872
  ifdef CONFIG_BUILD_DOCSRC
  	$(Q)$(MAKE) $(build)=Documentation
  endif
741f98fe2   Sam Ravnborg   kbuild: do sectio...
873
  	$(call vmlinux-modpost)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
874
  	$(call if_changed_rule,vmlinux__)
4e25d8bb9   Jan Beulich   [PATCH] kbuild: a...
875
  	$(Q)rm -f .old_version
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
876

310f8243a   Sam Ravnborg   kbuild: link vmli...
877
  # build vmlinux.o first to catch section mismatch errors early
cf87dcd14   Sam Ravnborg   kbuild: fix build...
878
879
880
  ifdef CONFIG_KALLSYMS
  .tmp_vmlinux1: vmlinux.o
  endif
90ebd878a   Sam Ravnborg   kbuild: fix vmlin...
881
882
883
  
  modpost-init := $(filter-out init/built-in.o, $(vmlinux-init))
  vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE
741f98fe2   Sam Ravnborg   kbuild: do sectio...
884
  	$(call if_changed_rule,vmlinux-modpost)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
885
886
887
888
889
890
891
892
893
  # The actual objects are generated when descending, 
  # make sure no implicit rule kicks in
  $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
  
  # Handle descending into subdirectories listed in $(vmlinux-dirs)
  # Preset locale variables to speed up the build process. Limit locale
  # tweaks to this spot to avoid wrong language settings when running
  # make menuconfig etc.
  # Error messages still appears in the original language
4f1933620   Paul Smith   kbuild: change kb...
894
  PHONY += $(vmlinux-dirs)
5bb782690   Sam Ravnborg   kbuild: rename pr...
895
  $(vmlinux-dirs): prepare scripts
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
896
  	$(Q)$(MAKE) $(build)=$@
f1d28fb04   Roman Zippel   kconfig: move .ke...
897
  # Store (new) KERNELRELASE string in include/config/kernel.release
f1d28fb04   Roman Zippel   kconfig: move .ke...
898
  include/config/kernel.release: include/config/auto.conf FORCE
2244cbd8a   Sam Ravnborg   kbuild: create .k...
899
  	$(Q)rm -f $@
7263e715c   Michal Marek   kbuild: Fix path ...
900
  	$(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@
cb58455c4   Sam Ravnborg   kbuild: KERNELREL...
901

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
902
  # Things we need to do before we recursively start building the kernel
5bb782690   Sam Ravnborg   kbuild: rename pr...
903
904
905
906
  # or the modules are listed in "prepare".
  # A multi level approach is used. prepareN is processed before prepareN-1.
  # archprepare is used in arch Makefiles and when processed asm symlink,
  # version.h and scripts_basic is processed / created.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
907

5bb782690   Sam Ravnborg   kbuild: rename pr...
908
  # Listed in dependency order
4f1933620   Paul Smith   kbuild: change kb...
909
  PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
5bb782690   Sam Ravnborg   kbuild: rename pr...
910

86feeaa81   Sam Ravnborg   kbuild: full depe...
911
  # prepare3 is used to check if we are building in a separate output directory,
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
912
913
  # and if so do:
  # 1) Check that make has not been executed in the kernel src $(srctree)
f1d28fb04   Roman Zippel   kconfig: move .ke...
914
  prepare3: include/config/kernel.release
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
915
  ifneq ($(KBUILD_SRC),)
fd54f5028   Mike Frysinger   kbuild: use KECHO...
916
  	@$(kecho) '  Using $(srctree) as source for kernel'
c955ccafc   Roman Zippel   kconfig: fix .con...
917
  	$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
918
919
920
921
  		echo "  $(srctree) is not clean, please run 'make mrproper'";\
  		echo "  in the '$(srctree)' directory.";\
  		/bin/false; \
  	fi;
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
922
  endif
86feeaa81   Sam Ravnborg   kbuild: full depe...
923
  # prepare2 creates a makefile if using a separate output directory
d8ecc5cd8   Sam Ravnborg   kbuild: asm-gener...
924
  prepare2: prepare3 outputmakefile asm-generic
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
925

273b281fa   Sam Ravnborg   kbuild: move utsr...
926
  prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \
f7f16b779   Sam Ravnborg   kbuild: drop incl...
927
                     include/config/auto.conf
7bb9d092d   Sam Ravnborg   kbuild: fix first...
928
  	$(cmd_crmodverdir)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
929

5bb782690   Sam Ravnborg   kbuild: rename pr...
930
931
932
  archprepare: prepare1 scripts_basic
  
  prepare0: archprepare FORCE
8d36a6236   Sam Ravnborg   kbuild: fix gener...
933
  	$(Q)$(MAKE) $(build)=.
86feeaa81   Sam Ravnborg   kbuild: full depe...
934

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
935
  # All the preparing..
d395efb54   Robert P. J. Day   [PATCH] Kbuild: R...
936
  prepare: prepare0
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
937

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
938
939
940
941
942
943
944
  # Generate some files
  # ---------------------------------------------------------------------------
  
  # KERNELRELEASE can change from a few different places, meaning version.h
  # needs to be updated, so this check is forced on all builds
  
  uts_len := 64
63104eec2   Sam Ravnborg   kbuild: introduce...
945
946
947
948
949
950
951
  define filechk_utsrelease.h
  	if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
  	  echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2;    \
  	  exit 1;                                                         \
  	fi;                                                               \
  	(echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
  endef
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
952
953
  
  define filechk_version.h
63104eec2   Sam Ravnborg   kbuild: introduce...
954
  	(echo \#define LINUX_VERSION_CODE $(shell                             \
78d3bb448   Michal Marek   kbuild: Fix <linu...
955
  	expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL));    \
63104eec2   Sam Ravnborg   kbuild: introduce...
956
  	echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
957
  endef
63104eec2   Sam Ravnborg   kbuild: introduce...
958
  include/linux/version.h: $(srctree)/Makefile FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
959
  	$(call filechk,version.h)
273b281fa   Sam Ravnborg   kbuild: move utsr...
960
  include/generated/utsrelease.h: include/config/kernel.release FORCE
63104eec2   Sam Ravnborg   kbuild: introduce...
961
  	$(call filechk,utsrelease.h)
179efcb47   Vegard Nossum   kbuild: add heade...
962
963
  PHONY += headerdep
  headerdep:
9663d9890   Peter Foley   kbuild: make head...
964
965
  	$(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
  	$(srctree)/scripts/headerdep.pl -I$(srctree)/include
179efcb47   Vegard Nossum   kbuild: add heade...
966

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
967
  # ---------------------------------------------------------------------------
4f1933620   Paul Smith   kbuild: change kb...
968
  PHONY += depend dep
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
969
970
971
972
  depend dep:
  	@echo '*** Warning: make $@ is unnecessary now.'
  
  # ---------------------------------------------------------------------------
88ecf814c   David Woodhouse   firmware: Add fir...
973
974
975
976
977
978
979
980
981
982
  # Firmware install
  INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
  export INSTALL_FW_PATH
  
  PHONY += firmware_install
  firmware_install: FORCE
  	@mkdir -p $(objtree)/firmware
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
  
  # ---------------------------------------------------------------------------
8d730cfb5   David Woodhouse   Basic implementat...
983
  # Kernel headers
8d730cfb5   David Woodhouse   Basic implementat...
984

e6883b187   Sam Ravnborg   kbuild: refactor ...
985
986
  #Default location for installed headers
  export INSTALL_HDR_PATH = $(objtree)/usr
6d7162758   David Woodhouse   New 'make headers...
987

e6883b187   Sam Ravnborg   kbuild: refactor ...
988
  hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
989
990
991
  
  # If we do an all arch process set dst to asm-$(hdr-arch)
  hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
e6883b187   Sam Ravnborg   kbuild: refactor ...
992
993
  
  PHONY += __headers
d8ecc5cd8   Sam Ravnborg   kbuild: asm-gener...
994
  __headers: include/linux/version.h scripts_basic asm-generic FORCE
e1b702cf2   Mike Waychison   KBuild: silence "...
995
  	$(Q)$(MAKE) $(build)=scripts build_unifdef
e6883b187   Sam Ravnborg   kbuild: refactor ...
996
997
  
  PHONY += headers_install_all
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
998
999
  headers_install_all:
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
6d7162758   David Woodhouse   New 'make headers...
1000

8d730cfb5   David Woodhouse   Basic implementat...
1001
  PHONY += headers_install
e6883b187   Sam Ravnborg   kbuild: refactor ...
1002
  headers_install: __headers
c95fa08a3   Sam Ravnborg   kbuild: do not ch...
1003
  	$(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1004
  	$(error Headers not exportable for the $(SRCARCH) architecture))
88181ec30   Sam Ravnborg   kbuild: only one ...
1005
  	$(Q)$(MAKE) $(hdr-inst)=include
c95fa08a3   Sam Ravnborg   kbuild: do not ch...
1006
  	$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst)
8d730cfb5   David Woodhouse   Basic implementat...
1007

1f85712e6   Mike Frysinger   [PATCH] new tople...
1008
1009
  PHONY += headers_check_all
  headers_check_all: headers_install_all
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1010
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1f85712e6   Mike Frysinger   [PATCH] new tople...
1011

684753599   David Woodhouse   Basic implementat...
1012
1013
  PHONY += headers_check
  headers_check: headers_install
88181ec30   Sam Ravnborg   kbuild: only one ...
1014
  	$(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1
c95fa08a3   Sam Ravnborg   kbuild: do not ch...
1015
  	$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1
684753599   David Woodhouse   Basic implementat...
1016

8d730cfb5   David Woodhouse   Basic implementat...
1017
  # ---------------------------------------------------------------------------
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1018
1019
1020
  # Modules
  
  ifdef CONFIG_MODULES
070b98bfd   Sam Ravnborg   kbuild: trivial f...
1021
  # By default, build modules as well
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1022

73d1393eb   Michal Marek   kbuild: Generate ...
1023
  all: modules
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1024
1025
  
  #	Build modules
551559e13   Tejun Heo   kbuild: implement...
1026
1027
1028
1029
  #
  #	A module can be listed more than once in obj-m resulting in
  #	duplicate lines in modules.order files.  Those are removed
  #	using awk while concatenating to the final file.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1030

4f1933620   Paul Smith   kbuild: change kb...
1031
  PHONY += modules
2da30e703   Michal Marek   kbuild: Generate ...
1032
  modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
551559e13   Tejun Heo   kbuild: implement...
1033
  	$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
fd54f5028   Mike Frysinger   kbuild: use KECHO...
1034
  	@$(kecho) '  Building modules, stage 2.';
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1035
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
44463f7dd   David Woodhouse   firmware: create ...
1036
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1037

a6c366324   Michal Marek   kbuild: Do not un...
1038
1039
  modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
  	$(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
73d1393eb   Michal Marek   kbuild: Generate ...
1040
  %/modules.builtin: include/config/auto.conf
a6c366324   Michal Marek   kbuild: Do not un...
1041
  	$(Q)$(MAKE) $(modbuiltin)=$*
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1042
1043
  
  # Target to prepare building external modules
4f1933620   Paul Smith   kbuild: change kb...
1044
  PHONY += modules_prepare
5bb782690   Sam Ravnborg   kbuild: rename pr...
1045
  modules_prepare: prepare scripts
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1046
1047
  
  # Target to install modules
4f1933620   Paul Smith   kbuild: change kb...
1048
  PHONY += modules_install
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1049
  modules_install: _modinst_ _modinst_post
4f1933620   Paul Smith   kbuild: change kb...
1050
  PHONY += _modinst_
2da30e703   Michal Marek   kbuild: Generate ...
1051
  _modinst_:
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1052
1053
1054
1055
1056
1057
1058
1059
  	@rm -rf $(MODLIB)/kernel
  	@rm -f $(MODLIB)/source
  	@mkdir -p $(MODLIB)/kernel
  	@ln -s $(srctree) $(MODLIB)/source
  	@if [ ! $(objtree) -ef  $(MODLIB)/build ]; then \
  		rm -f $(MODLIB)/build ; \
  		ln -s $(objtree) $(MODLIB)/build ; \
  	fi
551559e13   Tejun Heo   kbuild: implement...
1060
  	@cp -f $(objtree)/modules.order $(MODLIB)/
bc081dd6e   Michal Marek   kbuild: generate ...
1061
  	@cp -f $(objtree)/modules.builtin $(MODLIB)/
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1062
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1063

50a8ec31c   Sam Ravnborg   kbuild: disable d...
1064
  # This depmod is only for convenience to give the initial
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1065
1066
  # boot a modules.dep even before / is mounted read-write.  However the
  # boot script depmod is the master version.
4f1933620   Paul Smith   kbuild: change kb...
1067
  PHONY += _modinst_post
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1068
  _modinst_post: _modinst_
88ecf814c   David Woodhouse   firmware: Add fir...
1069
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
50a8ec31c   Sam Ravnborg   kbuild: disable d...
1070
  	$(call cmd,depmod)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
  
  else # CONFIG_MODULES
  
  # Modules not configured
  # ---------------------------------------------------------------------------
  
  modules modules_install: FORCE
  	@echo
  	@echo "The present kernel configuration has modules disabled."
  	@echo "Type 'make config' and enable loadable module support."
  	@echo "Then build a kernel with module support enabled."
  	@echo
  	@exit 1
  
  endif # CONFIG_MODULES
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
  ###
  # Cleaning is done on three levels.
  # make clean     Delete most generated files
  #                Leave enough to build external modules
  # make mrproper  Delete the current configuration, and all generated files
  # make distclean Remove editor backup files, patch leftover files and the like
  
  # Directories & files removed with 'make clean'
  CLEAN_DIRS  += $(MODVERDIR)
  CLEAN_FILES +=	vmlinux System.map \
                  .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
  
  # Directories & files removed with 'make mrproper'
d8ecc5cd8   Sam Ravnborg   kbuild: asm-gener...
1099
1100
  MRPROPER_DIRS  += include/config usr/include include/generated          \
                    arch/*/include/generated
f7f16b779   Sam Ravnborg   kbuild: drop incl...
1101
  MRPROPER_FILES += .config .config.old .version .old_version             \
264a26838   Sam Ravnborg   kbuild: move auto...
1102
                    include/linux/version.h                               \
f4ed1009f   Jianbin Kang   kbuild: add GNU G...
1103
  		  Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1104
1105
1106
1107
1108
  
  # clean - Delete most, but leave enough to build external modules
  #
  clean: rm-dirs  := $(CLEAN_DIRS)
  clean: rm-files := $(CLEAN_FILES)
c47f214ac   Michal Marek   kbuild: Do not ru...
1109
  clean-dirs      := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1110

4f1933620   Paul Smith   kbuild: change kb...
1111
  PHONY += $(clean-dirs) clean archclean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1112
1113
  $(clean-dirs):
  	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
88d7be031   Michal Marek   kbuild: Use a sin...
1114
  clean: archclean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1115
1116
1117
1118
1119
1120
  
  # mrproper - Delete all generated files, including .config
  #
  mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
  mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
  mrproper-dirs      := $(addprefix _mrproper_,Documentation/DocBook scripts)
4f1933620   Paul Smith   kbuild: change kb...
1121
  PHONY += $(mrproper-dirs) mrproper archmrproper
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1122
1123
1124
1125
1126
1127
1128
1129
1130
  $(mrproper-dirs):
  	$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
  
  mrproper: clean archmrproper $(mrproper-dirs)
  	$(call cmd,rmdirs)
  	$(call cmd,rmfiles)
  
  # distclean
  #
4f1933620   Paul Smith   kbuild: change kb...
1131
  PHONY += distclean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1132
1133
1134
  
  distclean: mrproper
  	@find $(srctree) $(RCS_FIND_IGNORE) \
070b98bfd   Sam Ravnborg   kbuild: trivial f...
1135
  		\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1136
  		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
f4b129f51   Michal Marek   kbuild: Do not de...
1137
  		-o -name '.*.rej' \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1138
1139
1140
1141
1142
1143
1144
1145
  		-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
  		-type f -print | xargs rm -f
  
  
  # Packaging of the kernel to various formats
  # ---------------------------------------------------------------------------
  # rpm target kept for backward compatibility
  package-dir	:= $(srctree)/scripts/package
bafb67470   Arnaldo Carvalho de Melo   perf tools: Allow...
1146
1147
  %src-pkg: FORCE
  	$(Q)$(MAKE) $(build)=$(package-dir) $@
031ecc6de   Zach Brown   kbuild: add depen...
1148
  %pkg: include/config/kernel.release FORCE
6c2133e11   Sam Ravnborg   kbuild: fix make ...
1149
  	$(Q)$(MAKE) $(build)=$(package-dir) $@
031ecc6de   Zach Brown   kbuild: add depen...
1150
  rpm: include/config/kernel.release FORCE
6c2133e11   Sam Ravnborg   kbuild: fix make ...
1151
  	$(Q)$(MAKE) $(build)=$(package-dir) $@
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1152
1153
1154
1155
  
  
  # Brief documentation of the typical targets used
  # ---------------------------------------------------------------------------
5dffbe811   Segher Boessenkool   kbuild: show defc...
1156
  boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1157
  boards := $(notdir $(boards))
5dffbe811   Segher Boessenkool   kbuild: show defc...
1158
1159
  board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
  board-dirs := $(sort $(notdir $(board-dirs:/=)))
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1160
1161
1162
  
  help:
  	@echo  'Cleaning targets:'
5ea084ef9   Samuel Tardieu   Use consistent ca...
1163
  	@echo  '  clean		  - Remove most generated files but keep the config and'
5cc8d246d   Jesper Juhl   kbuild: add distc...
1164
  	@echo  '                    enough build support to build external modules'
5ea084ef9   Samuel Tardieu   Use consistent ca...
1165
  	@echo  '  mrproper	  - Remove all generated files + config + various backup files'
5cc8d246d   Jesper Juhl   kbuild: add distc...
1166
  	@echo  '  distclean	  - mrproper + remove editor backup and patch files'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1167
1168
1169
1170
1171
1172
1173
1174
  	@echo  ''
  	@echo  'Configuration targets:'
  	@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
  	@echo  ''
  	@echo  'Other generic targets:'
  	@echo  '  all		  - Build all targets marked with [*]'
  	@echo  '* vmlinux	  - Build the bare kernel'
  	@echo  '* modules	  - Build all modules'
9cc5d74c8   Bodo Eggert   kbuild: document ...
1175
  	@echo  '  modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
88ecf814c   David Woodhouse   firmware: Add fir...
1176
1177
  	@echo  '  firmware_install- Install all firmware to INSTALL_FW_PATH'
  	@echo  '                    (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1178
  	@echo  '  dir/            - Build all files in dir and below'
627189797   Joe Perches   Makefile: Documen...
1179
1180
1181
  	@echo  '  dir/file.[oisS] - Build specified target only'
  	@echo  '  dir/file.lst    - Build specified mixed source/assembly target only'
  	@echo  '                    (requires a recent binutils and recent build (System.map))'
155ad605b   Sam Ravnborg   [PATCH] kbuild: b...
1182
  	@echo  '  dir/file.ko     - Build module including final link'
c4d5ee67c   Robert P. J. Day   kbuild: "make pre...
1183
  	@echo  '  modules_prepare - Set up for building external modules'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1184
1185
  	@echo  '  tags/TAGS	  - Generate tags file for editors'
  	@echo  '  cscope	  - Generate cscope index'
f4ed1009f   Jianbin Kang   kbuild: add GNU G...
1186
  	@echo  '  gtags           - Generate GNU GLOBAL index'
6d1288425   Zach Brown   [PATCH] kbuild: a...
1187
  	@echo  '  kernelrelease	  - Output the release version string'
cb58455c4   Sam Ravnborg   kbuild: KERNELREL...
1188
  	@echo  '  kernelversion	  - Output the version stored in Makefile'
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1189
  	@echo  '  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
59df3230f   Geert Uytterhoeven   [PATCH] `make hel...
1190
  	 echo  '                    (default: $(INSTALL_HDR_PATH))'; \
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1191
  	 echo  ''
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1192
  	@echo  'Static analysers'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1193
1194
  	@echo  '  checkstack      - Generate a list of stack hogs'
  	@echo  '  namespacecheck  - Name space analysis on compiled kernel'
aa025e7d5   Sam Ravnborg   kbuild: document ...
1195
  	@echo  '  versioncheck    - Sanity check on version.h usage'
ec2d987f9   Randy Dunlap   kbuild: add 'incl...
1196
  	@echo  '  includecheck    - Check for duplicate included header files'
295ac0518   Adrian Bunk   kbuild: call expo...
1197
  	@echo  '  export_report   - List the usages of all exported symbols'
179efcb47   Vegard Nossum   kbuild: add heade...
1198
  	@echo  '  headers_check   - Sanity check on exported headers'
74425eee7   Nicolas Palix   Add a target to u...
1199
1200
1201
  	@echo  '  headerdep       - Detect inclusion cycles in headers'
  	@$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
  	@echo  ''
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1202
  	@echo  'Kernel packaging:'
6c2133e11   Sam Ravnborg   kbuild: fix make ...
1203
  	@$(MAKE) $(build)=$(package-dir) help
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1204
1205
1206
1207
  	@echo  ''
  	@echo  'Documentation targets:'
  	@$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
  	@echo  ''
01dee1881   Andres Salomon   kbuild: fix help ...
1208
  	@echo  'Architecture specific targets ($(SRCARCH)):'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1209
  	@$(if $(archhelp),$(archhelp),\
01dee1881   Andres Salomon   kbuild: fix help ...
1210
  		echo '  No architecture specific help defined for $(SRCARCH)')
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1211
1212
1213
1214
1215
1216
  	@echo  ''
  	@$(if $(boards), \
  		$(foreach b, $(boards), \
  		printf "  %-24s - Build for %s\
  " $(b) $(subst _defconfig,,$(b));) \
  		echo '')
5dffbe811   Segher Boessenkool   kbuild: show defc...
1217
1218
1219
1220
1221
1222
1223
  	@$(if $(board-dirs), \
  		$(foreach b, $(board-dirs), \
  		printf "  %-16s - Show %s-specific targets\
  " help-$(b) $(b);) \
  		printf "  %-16s - Show all of the above\
  " help-boards; \
  		echo '')
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1224
1225
  
  	@echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
45d506bd6   Sam Ravnborg   kbuild: make V=2 ...
1226
  	@echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1227
  	@echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
701842e3b   Dustin Kirkland   kbuild: documenta...
1228
1229
  	@echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
  	@echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
af07ce3e7   Ingo Molnar   Merge branch 'tip...
1230
  	@echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
28bc20dcc   Sam Ravnborg   kbuild: implement...
1231
1232
1233
1234
  	@echo  '  make W=n   [targets] Enable extra gcc checks, n=1,2,3 where'
  	@echo  '		1: warnings which may be relevant and do not occur too often'
  	@echo  '		2: warnings which occur quite often but may still be relevant'
  	@echo  '		3: more obscure warnings, can most likely be ignored'
a6de553da   Michal Marek   kbuild: Allow to ...
1235
  	@echo  '		Multiple levels can be combined with W=12 or W=123'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1236
1237
1238
  	@echo  ''
  	@echo  'Execute "make" or "make all" to build all targets marked with [*] '
  	@echo  'For further info see the ./README file'
5dffbe811   Segher Boessenkool   kbuild: show defc...
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
  help-board-dirs := $(addprefix help-,$(board-dirs))
  
  help-boards: $(help-board-dirs)
  
  boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
  
  $(help-board-dirs): help-%:
  	@echo  'Architecture specific targets ($(SRCARCH) $*):'
  	@$(if $(boards-per-dir), \
  		$(foreach b, $(boards-per-dir), \
  		printf "  %-24s - Build for %s\
  " $*/$(b) $(subst _defconfig,,$(b));) \
  		echo '')
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1252
1253
1254
  # Documentation targets
  # ---------------------------------------------------------------------------
  %docs: scripts_basic FORCE
bffd2020a   Peter Foley   kbuild: move scri...
1255
  	$(Q)$(MAKE) $(build)=scripts build_docproc
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1256
1257
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  	$(Q)$(MAKE) $(build)=Documentation/DocBook $@
  
  else # KBUILD_EXTMOD
  
  ###
  # External module support.
  # When building external modules the kernel used as basis is considered
  # read-only, and no consistency checks are made and the make
  # system is not used on the basis kernel. If updates are required
  # in the basis kernel ordinary make commands (without M=...) must
  # be used.
  #
  # The following are the only valid targets when building external
  # modules.
  # make M=dir clean     Delete all automatically generated files
  # make M=dir modules   Make all modules in specified dir
  # make M=dir	       Same as 'make M=dir modules'
  # make M=dir modules_install
070b98bfd   Sam Ravnborg   kbuild: trivial f...
1274
  #                      Install the modules built in the module directory
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1275
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1278
  #                      Assumes install directory is already created
  
  # We are always building modules
  KBUILD_MODULES := 1
4f1933620   Paul Smith   kbuild: change kb...
1279
  PHONY += crmodverdir
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1280
  crmodverdir:
7bb9d092d   Sam Ravnborg   kbuild: fix first...
1281
  	$(cmd_crmodverdir)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1282

4f1933620   Paul Smith   kbuild: change kb...
1283
  PHONY += $(objtree)/Module.symvers
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1284
1285
1286
1287
1288
1289
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1291
  $(objtree)/Module.symvers:
  	@test -e $(objtree)/Module.symvers || ( \
  	echo; \
  	echo "  WARNING: Symbol version dump $(objtree)/Module.symvers"; \
  	echo "           is missing; modules will have no dependencies and modversions."; \
  	echo )
  
  module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
4f1933620   Paul Smith   kbuild: change kb...
1292
  PHONY += $(module-dirs) modules
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1293
1294
1295
1296
  $(module-dirs): crmodverdir $(objtree)/Module.symvers
  	$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
  
  modules: $(module-dirs)
fd54f5028   Mike Frysinger   kbuild: use KECHO...
1297
  	@$(kecho) '  Building modules, stage 2.';
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1298
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1299

4f1933620   Paul Smith   kbuild: change kb...
1300
  PHONY += modules_install
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1301
  modules_install: _emodinst_ _emodinst_post
e63046630   Adrian Bunk   kbuild: remove a ...
1302

4f1933620   Paul Smith   kbuild: change kb...
1303
1304
  install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
  PHONY += _emodinst_
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1305
  _emodinst_:
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1306
  	$(Q)mkdir -p $(MODLIB)/$(install-dir)
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1307
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1308

4f1933620   Paul Smith   kbuild: change kb...
1309
  PHONY += _emodinst_post
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1310
1311
  _emodinst_post: _emodinst_
  	$(call cmd,depmod)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1312
  clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
4f1933620   Paul Smith   kbuild: change kb...
1313
  PHONY += $(clean-dirs) clean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1314
1315
1316
1317
  $(clean-dirs):
  	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
  
  clean:	rm-dirs := $(MODVERDIR)
88d7be031   Michal Marek   kbuild: Use a sin...
1318
  clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1319
1320
1321
1322
1323
1324
1325
1326
1327
  
  help:
  	@echo  '  Building external modules.'
  	@echo  '  Syntax: make -C path/to/kernel/src M=$$PWD target'
  	@echo  ''
  	@echo  '  modules         - default target, build the module(s)'
  	@echo  '  modules_install - install the module'
  	@echo  '  clean           - remove generated files in module directory only'
  	@echo  ''
06300b21f   Sam Ravnborg   kbuild: support b...
1328
1329
  
  # Dummies...
4f1933620   Paul Smith   kbuild: change kb...
1330
  PHONY += prepare scripts
06300b21f   Sam Ravnborg   kbuild: support b...
1331
1332
  prepare: ;
  scripts: ;
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1333
  endif # KBUILD_EXTMOD
88d7be031   Michal Marek   kbuild: Use a sin...
1334
1335
1336
  clean: $(clean-dirs)
  	$(call cmd,rmdirs)
  	$(call cmd,rmfiles)
43f67c981   Kevin Cernekee   kbuild: Fix GNU m...
1337
  	@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
88d7be031   Michal Marek   kbuild: Use a sin...
1338
1339
1340
1341
1342
  		\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
  		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
  		-o -name '*.symtypes' -o -name 'modules.order' \
  		-o -name modules.builtin -o -name '.tmp_*.o.*' \
  		-o -name '*.gcno' \) -type f -print | xargs rm -f
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1343
1344
  # Generate tags for editors
  # ---------------------------------------------------------------------------
a680eedc6   Sam Ravnborg   tags and cscope s...
1345
1346
  quiet_cmd_tags = GEN     $@
        cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1347

f4ed1009f   Jianbin Kang   kbuild: add GNU G...
1348
  tags TAGS cscope gtags: FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1349
  	$(call cmd,tags)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1350
1351
  # Scripts to check various things for consistency
  # ---------------------------------------------------------------------------
279f3dd35   Peter Foley   kbuild: add targe...
1352
  PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1353
  includecheck:
436f876cc   Peter Foley   kbuild: make incl...
1354
  	find $(srctree)/* $(RCS_FIND_IGNORE) \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1355
  		-name '*.[hcS]' -type f -print | sort \
800074345   Geert Uytterhoeven   kbuild: Add missi...
1356
  		| xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1357
1358
  
  versioncheck:
2ee2d2928   Peter Foley   kbuild: make vers...
1359
  	find $(srctree)/* $(RCS_FIND_IGNORE) \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1360
  		-name '*.[hcS]' -type f -print | sort \
800074345   Geert Uytterhoeven   kbuild: Add missi...
1361
  		| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1362

74425eee7   Nicolas Palix   Add a target to u...
1363
1364
  coccicheck:
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1365
1366
  namespacecheck:
  	$(PERL) $(srctree)/scripts/namespace.pl
295ac0518   Adrian Bunk   kbuild: call expo...
1367
1368
  export_report:
  	$(PERL) $(srctree)/scripts/export_report.pl
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1369
1370
  endif #ifeq ($(config-targets),1)
  endif #ifeq ($(mixed-targets),1)
c30a02e02   Roman Zippel   kbuild: `make ker...
1371
  PHONY += checkstack kernelrelease kernelversion
e3ccf6e36   Jeff Dike   [PATCH] uml: add ...
1372

011e3a9ad   Jeff Dike   [PATCH] Fix cross...
1373
1374
1375
1376
1377
1378
1379
1380
1381
  # UML needs a little special treatment here.  It wants to use the host
  # toolchain, so needs $(SUBARCH) passed to checkstack.pl.  Everyone
  # else wants $(ARCH), including people doing cross-builds, which means
  # that $(SUBARCH) doesn't work here.
  ifeq ($(ARCH), um)
  CHECKSTACK_ARCH := $(SUBARCH)
  else
  CHECKSTACK_ARCH := $(ARCH)
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1382
1383
  checkstack:
  	$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
011e3a9ad   Jeff Dike   [PATCH] Fix cross...
1384
  	$(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1385

7b8ea53d7   Amerigo Wang   makefile: not nee...
1386
1387
  kernelrelease:
  	@echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
01ab17887   Amerigo Wang   Makefile: "make k...
1388

cb58455c4   Sam Ravnborg   kbuild: KERNELREL...
1389
  kernelversion:
2244cbd8a   Sam Ravnborg   kbuild: create .k...
1390
  	@echo $(KERNELVERSION)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1391

06300b21f   Sam Ravnborg   kbuild: support b...
1392
1393
  # Single targets
  # ---------------------------------------------------------------------------
bc2546a67   Sam Ravnborg   kbuild: fix build...
1394
  # Single targets are compatible with:
e1b8513d2   Robert P. J. Day   Typoes: "whith" ...
1395
  # - build with mixed source and output
bc2546a67   Sam Ravnborg   kbuild: fix build...
1396
1397
1398
1399
1400
1401
1402
  # - build with separate output dir 'make O=...'
  # - external modules
  #
  #  target-dir => where to store outputfile
  #  build-dir  => directory in kernel source tree to use
  
  ifeq ($(KBUILD_EXTMOD),)
aa360879e   Sam Ravnborg   kbuild: fix make ...
1403
          build-dir  = $(patsubst %/,%,$(dir $@))
bc2546a67   Sam Ravnborg   kbuild: fix build...
1404
1405
1406
1407
1408
1409
          target-dir = $(dir $@)
  else
          zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
          build-dir  = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
          target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
  endif
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1410
  %.s: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1411
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1412
  %.i: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1413
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1414
  %.o: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1415
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1416
  %.lst: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1417
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1418
  %.s: %.S prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1419
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1420
  %.o: %.S prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1421
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
15fde6751   Andreas Gruenbacher   kbuild: support f...
1422
1423
  %.symtypes: %.c prepare scripts FORCE
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
06300b21f   Sam Ravnborg   kbuild: support b...
1424

bc2546a67   Sam Ravnborg   kbuild: fix build...
1425
  # Modules
31110ebbe   Sam Ravnborg   kbuild: fix make ...
1426
1427
1428
1429
1430
  /: prepare scripts FORCE
  	$(cmd_crmodverdir)
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
  	$(build)=$(build-dir)
  %/: prepare scripts FORCE
7bb9d092d   Sam Ravnborg   kbuild: fix first...
1431
  	$(cmd_crmodverdir)
06300b21f   Sam Ravnborg   kbuild: support b...
1432
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
bc2546a67   Sam Ravnborg   kbuild: fix build...
1433
1434
  	$(build)=$(build-dir)
  %.ko: prepare scripts FORCE
7bb9d092d   Sam Ravnborg   kbuild: fix first...
1435
  	$(cmd_crmodverdir)
06300b21f   Sam Ravnborg   kbuild: support b...
1436
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
bc2546a67   Sam Ravnborg   kbuild: fix build...
1437
  	$(build)=$(build-dir) $(@:.ko=.o)
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1438
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
06300b21f   Sam Ravnborg   kbuild: support b...
1439

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1440
1441
1442
1443
1444
1445
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1447
  # FIXME Should go into a make.lib or something 
  # ===========================================================================
  
  quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN   $(wildcard $(rm-dirs)))
        cmd_rmdirs = rm -rf $(rm-dirs)
  
  quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN   $(wildcard $(rm-files)))
        cmd_rmfiles = rm -f $(rm-files)
bc3c26fe6   Uwe Kleine-König   fix typo "is" -> ...
1448
  # Run depmod only if we have System.map and depmod is executable
50a8ec31c   Sam Ravnborg   kbuild: disable d...
1449
  quiet_cmd_depmod = DEPMOD  $(KERNELRELEASE)
569658ddd   Michal Marek   kbuild: Call depm...
1450
1451
        cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
                     $(KERNELRELEASE)
50a8ec31c   Sam Ravnborg   kbuild: disable d...
1452

7bb9d092d   Sam Ravnborg   kbuild: fix first...
1453
  # Create temporary dir for module support files
ab19f8794   Sam Ravnborg   kbuild: fix modul...
1454
1455
1456
  # clean it up only when building all modules
  cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
                    $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1457

222d394d3   Sam Ravnborg   kbuild: enable 'm...
1458
  a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
80c00ba94   Sam Ravnborg   kbuild: allow ass...
1459
  	  $(KBUILD_AFLAGS_KERNEL)                              \
d8672b40d   Sam Ravnborg   kbuild: expand -I...
1460
  	  $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \
5e8d780d7   Sam Ravnborg   kbuild: fix ia64 ...
1461
  	  $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
  
  quiet_cmd_as_o_S = AS      $@
  cmd_as_o_S       = $(CC) $(a_flags) -c -o $@ $<
  
  # read all saved command lines
  
  targets := $(wildcard $(sort $(targets)))
  cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
  
  ifneq ($(cmd_files),)
    $(cmd_files): ;	# Do not try to update included dependency files
    include $(cmd_files)
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1475
1476
1477
1478
  # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
  # Usage:
  # $(Q)$(MAKE) $(clean)=dir
  clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1479
  endif	# skip-makefile
4f1933620   Paul Smith   kbuild: change kb...
1480
  PHONY += FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1481
  FORCE:
4f1933620   Paul Smith   kbuild: change kb...
1482

4f1933620   Paul Smith   kbuild: change kb...
1483
  # Declare the contents of the .PHONY variable as phony.  We keep that
fe8d0a410   Kirill Smelkov   kbuild: fix a few...
1484
  # information in a variable so we can use it in if_changed and friends.
4f1933620   Paul Smith   kbuild: change kb...
1485
  .PHONY: $(PHONY)