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Makefile 59.6 KB
b24413180   Greg Kroah-Hartman   License cleanup: ...
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  # SPDX-License-Identifier: GPL-2.0
c517d838e   Linus Torvalds   Linux 4.0-rc1
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  VERSION = 4
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  PATCHLEVEL = 14
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  SUBLEVEL = 98
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  EXTRAVERSION =
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  NAME = Petit Gorille
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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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  # That's our default target when none is given on the command line
  PHONY := _all
  _all:
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  # o Do not use make's built-in rules and variables
  #   (this increases performance and avoids hard-to-debug behaviour);
  # o Look for make include files relative to root of kernel src
  MAKEFLAGS += -rR --include-dir=$(CURDIR)
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c051346b7   H. Peter Anvin   Makefile: set LC_...
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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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  # Avoid interference with shell env settings
  unexport GREP_OPTIONS
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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.
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  # 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.
  # If it is set to "silent_", nothing will be printed at all, since
  # the variable $(silent_cmd_cc_o_c) doesn't exist.
  #
  # A simple variant is to prefix commands with $(Q) - that's useful
  # for commands that shall be hidden in non-verbose mode.
  #
  #	$(Q)ln $@ :<
  #
  # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
  # If KBUILD_VERBOSE equals 1 then the above command is displayed.
  #
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  # To put more focus on warnings, be less verbose as default
  # Use 'make V=1' to see the full commands
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  ifeq ("$(origin V)", "command line")
    KBUILD_VERBOSE = $(V)
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  endif
  ifndef KBUILD_VERBOSE
    KBUILD_VERBOSE = 0
  endif
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  ifeq ($(KBUILD_VERBOSE),1)
    quiet =
    Q =
  else
    quiet=quiet_
    Q = @
  endif
  
  # If the user is running make -s (silent mode), suppress echoing of
  # commands
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  ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
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    quiet=silent_
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    tools_silent=s
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  endif
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  export quiet Q KBUILD_VERBOSE
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  # kbuild supports saving output files in a separate directory.
  # To locate output files in a separate directory two syntaxes are supported.
  # In both cases the working directory must be the root of the kernel src.
  # 1) O=
  # Use "make O=dir/to/store/output/files/"
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  #
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  # 2) Set KBUILD_OUTPUT
  # Set the environment variable KBUILD_OUTPUT to point to the directory
  # where the output files shall be placed.
  # export KBUILD_OUTPUT=dir/to/store/output/files/
  # make
  #
  # The O= assignment takes precedence over the KBUILD_OUTPUT environment
  # variable.
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  # KBUILD_SRC is not intended to be used by the regular user (for now),
  # it is set on invocation of make with KBUILD_OUTPUT or O= specified.
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  ifeq ($(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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  # Cancel implicit rules on top Makefile
  $(CURDIR)/Makefile Makefile: ;
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  ifneq ($(words $(subst :, ,$(CURDIR))), 1)
    $(error main directory cannot contain spaces nor colons)
  endif
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  ifneq ($(KBUILD_OUTPUT),)
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  # check that the output directory actually exists
  saved-output := $(KBUILD_OUTPUT)
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  KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
  								&& /bin/pwd)
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  $(if $(KBUILD_OUTPUT),, \
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       $(error failed to create output directory "$(saved-output)"))
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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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  	@:
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  # Invoke a second make in the output directory, passing relevant variables
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  sub-make:
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  	$(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
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  	-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 ($(skip-makefile),)
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  # Do not print "Entering directory ...",
  # but we want to display it when entering to the output directory
  # so that IDEs/editors are able to understand relative filenames.
  MAKEFLAGS += --no-print-directory
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  # Call a source code checker (by default, "sparse") as part of the
  # C compilation.
  #
  # Use 'make C=1' to enable checking of only re-compiled files.
  # Use 'make C=2' to enable checking of *all* source files, regardless
  # of whether they are re-compiled or not.
  #
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  # See the file "Documentation/dev-tools/sparse.rst" for more details,
  # including where to get the "sparse" utility.
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  ifeq ("$(origin C)", "command line")
    KBUILD_CHECKSRC = $(C)
  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
  
  ifeq ("$(origin M)", "command line")
    KBUILD_EXTMOD := $(M)
  endif
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  ifeq ($(KBUILD_SRC),)
          # building in the source tree
          srctree := .
  else
          ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
                  # building in a subdirectory of the source tree
                  srctree := ..
          else
                  srctree := $(KBUILD_SRC)
          endif
  endif
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  export KBUILD_CHECKSRC KBUILD_EXTMOD KBUILD_SRC
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  objtree		:= .
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  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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  # 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.
  # For example 'make oldconfig all'.
  # Detect when mixed targets is specified, and make a second invocation
  # of make so .config is not included in this case either (for *config).
  
  version_h := include/generated/uapi/linux/version.h
  old_version_h := include/linux/version.h
  
  no-dot-config-targets := clean mrproper distclean \
  			 cscope gtags TAGS tags help% %docs check% coccicheck \
  			 $(version_h) headers_% archheaders archscripts \
  			 kernelversion %src-pkg
  
  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,$(MAKECMDGOALS)),)
                  config-targets := 1
                  ifneq ($(words $(MAKECMDGOALS)),1)
                          mixed-targets := 1
                  endif
          endif
  endif
  # install and modules_install need also be processed one by one
  ifneq ($(filter install,$(MAKECMDGOALS)),)
          ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
  	        mixed-targets := 1
          endif
  endif
  
  ifeq ($(mixed-targets),1)
  # ===========================================================================
  # We're called with mixed targets (*config and build targets).
  # Handle them one by one.
  
  PHONY += $(MAKECMDGOALS) __build_one_by_one
  
  $(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
  	@:
  
  __build_one_by_one:
  	$(Q)set -e; \
  	for i in $(MAKECMDGOALS); do \
  		$(MAKE) -f $(srctree)/Makefile $$i; \
  	done
  
  else
  
  # We need some generic definitions (do not try to remake the file).
  scripts/Kbuild.include: ;
  include scripts/Kbuild.include
  
  # Read KERNELRELEASE from include/config/kernel.release (if it exists)
  KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
  KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
  export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
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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,
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  # then ARCH is assigned, getting whatever value it gets normally, and
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  # SUBARCH is subsequently ignored.
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  SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
  				  -e s/sun4u/sparc64/ \
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  				  -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/ -e s/aarch64.*/arm64/ )
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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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  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
a439fe51a   Sam Ravnborg   sparc, sparc64: u...
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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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  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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  HOST_LFS_CFLAGS := $(shell getconf LFS_CFLAGS 2>/dev/null)
  HOST_LFS_LDFLAGS := $(shell getconf LFS_LDFLAGS 2>/dev/null)
  HOST_LFS_LIBS := $(shell getconf LFS_LIBS 2>/dev/null)
d7f14c66c   Uwe Kleine-König   kbuild: Enable La...
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  HOSTCC       = gcc
  HOSTCXX      = g++
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  HOSTCFLAGS   := -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 \
  		-fomit-frame-pointer -std=gnu89 $(HOST_LFS_CFLAGS)
  HOSTCXXFLAGS := -O2 $(HOST_LFS_CFLAGS)
  HOSTLDFLAGS  := $(HOST_LFS_LDFLAGS)
  HOST_LOADLIBES := $(HOST_LFS_LIBS)
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  # Make variables (CC, etc...)
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  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
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  PERL		= perl
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  PYTHON		= python
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  CHECK		= sparse
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  CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
  		  -Wbitwise -Wno-return-void $(CF)
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  NOSTDINC_FLAGS  =
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  CFLAGS_MODULE   =
  AFLAGS_MODULE   =
  LDFLAGS_MODULE  =
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  CFLAGS_KERNEL	=
  AFLAGS_KERNEL	=
b36fad65d   Michal Marek   kbuild: Initializ...
373
  LDFLAGS_vmlinux =
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
374

abbf1590d   David Howells   UAPI: Partition t...
375
376
377
  # Use USERINCLUDE when you must reference the UAPI directories only.
  USERINCLUDE    := \
  		-I$(srctree)/arch/$(hdr-arch)/include/uapi \
3308b2856   Arnd Bergmann   Kbuild: always pr...
378
  		-I$(objtree)/arch/$(hdr-arch)/include/generated/uapi \
abbf1590d   David Howells   UAPI: Partition t...
379
  		-I$(srctree)/include/uapi \
3308b2856   Arnd Bergmann   Kbuild: always pr...
380
  		-I$(objtree)/include/generated/uapi \
abbf1590d   David Howells   UAPI: Partition t...
381
                  -include $(srctree)/include/linux/kconfig.h
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
382
383
  # Use LINUXINCLUDE when you must reference the include/ directory.
  # Needed to be compatible with the O= option
abbf1590d   David Howells   UAPI: Partition t...
384
385
  LINUXINCLUDE    := \
  		-I$(srctree)/arch/$(hdr-arch)/include \
3308b2856   Arnd Bergmann   Kbuild: always pr...
386
  		-I$(objtree)/arch/$(hdr-arch)/include/generated \
abbf1590d   David Howells   UAPI: Partition t...
387
  		$(if $(KBUILD_SRC), -I$(srctree)/include) \
f8224f7f4   Masahiro Yamada   kbuild: remove du...
388
389
  		-I$(objtree)/include \
  		$(USERINCLUDE)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
390

b0c08c89e   Masahiro Yamada   kbuild: do not ca...
391
  KBUILD_AFLAGS   := -D__ASSEMBLY__
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
392
  KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
8c97023cf   Arnd Bergmann   Kbuild: use -fsho...
393
  		   -fno-strict-aliasing -fno-common -fshort-wchar \
a8735821d   Floris Kraak   Kbuild: Disable t...
394
  		   -Werror-implicit-function-declaration \
51b97e354   Kirill A. Shutemov   kernel: use the g...
395
  		   -Wno-format-security \
b0c08c89e   Masahiro Yamada   kbuild: do not ca...
396
397
  		   -std=gnu89
  KBUILD_CPPFLAGS := -D__KERNEL__
80c00ba94   Sam Ravnborg   kbuild: allow ass...
398
399
  KBUILD_AFLAGS_KERNEL :=
  KBUILD_CFLAGS_KERNEL :=
6588169d5   Sam Ravnborg   kbuild: allow ass...
400
401
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  KBUILD_AFLAGS_MODULE  := -DMODULE
  KBUILD_CFLAGS_MODULE  := -DMODULE
  KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
b0c08c89e   Masahiro Yamada   kbuild: do not ca...
403
  GCC_PLUGINS_CFLAGS :=
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
404

80ef88d6d   Sam Ravnborg   x86: simplify "ma...
405
  export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
d7f14c66c   Uwe Kleine-König   kbuild: Enable La...
406
  export CPP AR NM STRIP OBJCOPY OBJDUMP HOSTLDFLAGS HOST_LOADLIBES
011bf1254   Masahiro Yamada   kbuild: allow to ...
407
  export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE
070b98bfd   Sam Ravnborg   kbuild: trivial f...
408
  export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
409

06c5040cd   Sam Ravnborg   kbuild: enable 'm...
410
  export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
e186d8bfd   Andrey Konovalov   kasan: don't emit...
411
412
  export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
  export CFLAGS_KASAN CFLAGS_KASAN_NOSANITIZE CFLAGS_UBSAN
222d394d3   Sam Ravnborg   kbuild: enable 'm...
413
  export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
6588169d5   Sam Ravnborg   kbuild: allow ass...
414
  export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
80c00ba94   Sam Ravnborg   kbuild: allow ass...
415
  export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
40df759e2   Michal Marek   kbuild: Fix build...
416
  export KBUILD_ARFLAGS
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
417
418
419
420
421
  
  # 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
422
  # Files to ignore in find ... statements
ae63b2d7b   Prarit Bhargava   scripts/tags.sh: ...
423
424
425
  export 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
450c6076a   Jesper Juhl   Makefile: improve...
426
427
  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
428
429
430
  
  # ===========================================================================
  # Rules shared between *config targets and build targets
312a3d091   Cao jin   kbuild: trivial c...
431
  # Basic helpers built in scripts/basic/
4f1933620   Paul Smith   kbuild: change kb...
432
  PHONY += scripts_basic
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
433
434
  scripts_basic:
  	$(Q)$(MAKE) $(build)=scripts/basic
638adb056   Steven Rostedt   tracing: Only pri...
435
  	$(Q)rm -f .tmp_quiet_recordmcount
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
436

cd05e6bdc   Jan Beulich   [PATCH] kbuild: f...
437
438
  # To avoid any implicit rule to kick in, define an empty command.
  scripts/basic/%: scripts_basic ;
4f1933620   Paul Smith   kbuild: change kb...
439
  PHONY += outputmakefile
fd5f0cd6b   Jan Beulich   kbuild: Do not ov...
440
441
442
  # 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
443
  outputmakefile:
fd5f0cd6b   Jan Beulich   kbuild: Do not ov...
444
  ifneq ($(KBUILD_SRC),)
929799973   Andi Kleen   kbuild: create th...
445
  	$(Q)ln -fsn $(srctree) source
fd5f0cd6b   Jan Beulich   kbuild: Do not ov...
446
447
448
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
  	    $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
449

6288eb92c   Chris Fries   kbuild: Set KBUIL...
450
451
  ifeq ($(cc-name),clang)
  ifneq ($(CROSS_COMPILE),)
ff858d822   Masahiro Yamada   kbuild: consolida...
452
  CLANG_FLAGS	:= --target=$(notdir $(CROSS_COMPILE:%-=%))
9d844b0e6   Stefan Agner   kbuild: allow to ...
453
  GCC_TOOLCHAIN_DIR := $(dir $(shell which $(LD)))
ff858d822   Masahiro Yamada   kbuild: consolida...
454
  CLANG_FLAGS	+= --prefix=$(GCC_TOOLCHAIN_DIR)
9d844b0e6   Stefan Agner   kbuild: allow to ...
455
  GCC_TOOLCHAIN	:= $(realpath $(GCC_TOOLCHAIN_DIR)/..)
6288eb92c   Chris Fries   kbuild: Set KBUIL...
456
457
  endif
  ifneq ($(GCC_TOOLCHAIN),)
ff858d822   Masahiro Yamada   kbuild: consolida...
458
  CLANG_FLAGS	+= --gcc-toolchain=$(GCC_TOOLCHAIN)
6288eb92c   Chris Fries   kbuild: Set KBUIL...
459
  endif
ff858d822   Masahiro Yamada   kbuild: consolida...
460
461
462
  CLANG_FLAGS	+= -no-integrated-as
  KBUILD_CFLAGS	+= $(CLANG_FLAGS)
  KBUILD_AFLAGS	+= $(CLANG_FLAGS)
72d217d5d   Joel Stanley   Makefile: Export ...
463
  export CLANG_FLAGS
6288eb92c   Chris Fries   kbuild: Set KBUIL...
464
  endif
c3b9f7260   Peter Zijlstra   objtool, retpolin...
465
  RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register
4587db4c2   Andy Lutomirski   x86/vdso: Fix vDS...
466
  RETPOLINE_VDSO_CFLAGS_GCC := -mindirect-branch=thunk-inline -mindirect-branch-register
c3b9f7260   Peter Zijlstra   objtool, retpolin...
467
  RETPOLINE_CFLAGS_CLANG := -mretpoline-external-thunk
4587db4c2   Andy Lutomirski   x86/vdso: Fix vDS...
468
  RETPOLINE_VDSO_CFLAGS_CLANG := -mretpoline
c3b9f7260   Peter Zijlstra   objtool, retpolin...
469
  RETPOLINE_CFLAGS := $(call cc-option,$(RETPOLINE_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_CFLAGS_CLANG)))
4587db4c2   Andy Lutomirski   x86/vdso: Fix vDS...
470
  RETPOLINE_VDSO_CFLAGS := $(call cc-option,$(RETPOLINE_VDSO_CFLAGS_GCC),$(call cc-option,$(RETPOLINE_VDSO_CFLAGS_CLANG)))
c3b9f7260   Peter Zijlstra   objtool, retpolin...
471
  export RETPOLINE_CFLAGS
4587db4c2   Andy Lutomirski   x86/vdso: Fix vDS...
472
  export RETPOLINE_VDSO_CFLAGS
c3b9f7260   Peter Zijlstra   objtool, retpolin...
473

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
474
475
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477
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481
  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'
a436bb7b8   Masahiro Yamada   kbuild: use relat...
482
  include arch/$(SRCARCH)/Makefile
61bee2044   Al Viro   x86, um: get rid ...
483
  export KBUILD_DEFCONFIG KBUILD_KCONFIG
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
484

31110ebbe   Sam Ravnborg   kbuild: fix make ...
485
  config: scripts_basic outputmakefile FORCE
31110ebbe   Sam Ravnborg   kbuild: fix make ...
486
487
488
  	$(Q)$(MAKE) $(build)=scripts/kconfig $@
  
  %config: scripts_basic outputmakefile FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
489
490
491
492
493
494
  	$(Q)$(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.
cfe39acaf   Masahiro Yamada   kbuild: re-order ...
495
496
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499
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531
  # If building an external module we do not care about the all: rule
  # but instead _all depend on modules
  PHONY += all
  ifeq ($(KBUILD_EXTMOD),)
  _all: all
  else
  _all: modules
  endif
  
  # Decide whether to build built-in, modular, or both.
  # Normally, just do built-in.
  
  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
  # make sure the checksums are up to date before we record them.
  
  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
  
  export KBUILD_MODULES KBUILD_BUILTIN
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
532
533
534
  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...
535
  # in parallel
4f1933620   Paul Smith   kbuild: change kb...
536
  PHONY += scripts
a54292f58   Andreas Schwab   kbuild: generate ...
537
  scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
6b90bd4ba   Emese Revfy   GCC plugin infras...
538
  	 asm-generic gcc-plugins
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
539
  	$(Q)$(MAKE) $(build)=$(@)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
540
541
  # Objects we will link into vmlinux / subdirs we need to visit
  init-y		:= init/
df85b2d76   Markus Trippelsdorf   firmware: Restore...
542
  drivers-y	:= drivers/ sound/ firmware/
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
543
544
545
  net-y		:= net/
  libs-y		:= lib/
  core-y		:= usr/
37d9fe478   Feng Wu   virt: Add virt di...
546
  virt-y		:= virt/
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
547
548
549
  endif # KBUILD_EXTMOD
  
  ifeq ($(dot-config),1)
9ee4e3365   Sam Ravnborg   kbuild: external ...
550
551
  # Read in config
  -include include/config/auto.conf
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
552

9ee4e3365   Sam Ravnborg   kbuild: external ...
553
  ifeq ($(KBUILD_EXTMOD),)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
554
555
  # Read in dependencies to all Kconfig* files, make sure to run
  # oldconfig if changes are detected.
c955ccafc   Roman Zippel   kconfig: fix .con...
556
  -include include/config/auto.conf.cmd
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
557

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
558
  # To avoid any implicit rule to kick in, define an empty command
14cdd3c40   Roman Zippel   kconfig: KCONFIG_...
559
  $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
560

c955ccafc   Roman Zippel   kconfig: fix .con...
561
  # If .config is newer than include/config/auto.conf, someone tinkered
752625cff   Sam Ravnborg   kbuild: always ru...
562
  # with it and forgot to run make oldconfig.
070b98bfd   Sam Ravnborg   kbuild: trivial f...
563
  # if auto.conf.cmd is missing then we are probably in a cleaned tree so
752625cff   Sam Ravnborg   kbuild: always ru...
564
  # we execute the config step to be sure to catch updated Kconfig files
bc081dd6e   Michal Marek   kbuild: generate ...
565
  include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
566
567
  	$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
  else
264a26838   Sam Ravnborg   kbuild: move auto...
568
  # external modules needs include/generated/autoconf.h and include/config/auto.conf
9ee4e3365   Sam Ravnborg   kbuild: external ...
569
570
571
572
  # 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...
573
  	$(Q)test -e include/generated/autoconf.h -a -e $@ || (		\
5369f5502   Michal Marek   kbuild: Print err...
574
575
576
577
578
  	echo >&2;							\
  	echo >&2 "  ERROR: Kernel configuration is invalid.";		\
  	echo >&2 "         include/generated/autoconf.h or $@ are missing.";\
  	echo >&2 "         Run 'make oldconfig && make prepare' on kernel src to fix it.";	\
  	echo >&2 ;							\
9ee4e3365   Sam Ravnborg   kbuild: external ...
579
580
581
  	/bin/false)
  
  endif # KBUILD_EXTMOD
c955ccafc   Roman Zippel   kconfig: fix .con...
582

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
583
584
  else
  # Dummy target needed, because used as prerequisite
c955ccafc   Roman Zippel   kconfig: fix .con...
585
  include/config/auto.conf: ;
9ee4e3365   Sam Ravnborg   kbuild: external ...
586
  endif # $(dot-config)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
587

865563924   Nicolas Pitre   kbuild: fix build...
588
589
590
591
592
593
  # For the kernel to actually contain only the needed exported symbols,
  # we have to build modules as well to determine what those symbols are.
  # (this can be evaluated only once include/config/auto.conf has been included)
  ifdef CONFIG_TRIM_UNUSED_KSYMS
    KBUILD_MODULES := 1
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
594
595
596
  # 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...
597
  # Defaults to vmlinux, but the arch makefile usually adds further targets
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
598
  all: vmlinux
b0c08c89e   Masahiro Yamada   kbuild: do not ca...
599
600
601
602
603
  KBUILD_CFLAGS	+= $(call cc-option,-fno-PIE)
  KBUILD_AFLAGS	+= $(call cc-option,-fno-PIE)
  CFLAGS_GCOV	:= -fprofile-arcs -ftest-coverage -fno-tree-loop-im $(call cc-disable-warning,maybe-uninitialized,)
  CFLAGS_KCOV	:= $(call cc-option,-fsanitize-coverage=trace-pc,)
  export CFLAGS_GCOV CFLAGS_KCOV
6dd3f13e4   Michal Marek   kbuild: Do not pi...
604
605
606
607
608
  # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
  # values of the respective KBUILD_* variables
  ARCH_CPPFLAGS :=
  ARCH_AFLAGS :=
  ARCH_CFLAGS :=
a436bb7b8   Masahiro Yamada   kbuild: use relat...
609
  include arch/$(SRCARCH)/Makefile
a1c48bb16   Geert Uytterhoeven   Makefile: Fix unr...
610
611
  
  KBUILD_CFLAGS	+= $(call cc-option,-fno-delete-null-pointer-checks,)
ef6000b4c   Linus Torvalds   Disable the __bui...
612
  KBUILD_CFLAGS	+= $(call cc-disable-warning,frame-address,)
bd664f6b3   Linus Torvalds   disable new gcc-7...
613
614
615
  KBUILD_CFLAGS	+= $(call cc-disable-warning, format-truncation)
  KBUILD_CFLAGS	+= $(call cc-disable-warning, format-overflow)
  KBUILD_CFLAGS	+= $(call cc-disable-warning, int-in-bool-context)
e94f784fd   Arnd Bergmann   turn off -Wattrib...
616
  KBUILD_CFLAGS	+= $(call cc-disable-warning, attribute-alias)
a1c48bb16   Geert Uytterhoeven   Makefile: Fix unr...
617

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
618
  ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
6748cb3c2   Behan Webster   kbuild: use -Oz i...
619
620
  KBUILD_CFLAGS	+= $(call cc-option,-Oz,-Os)
  KBUILD_CFLAGS	+= $(call cc-disable-warning,maybe-uninitialized,)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
621
  else
815eb71e7   Arnd Bergmann   Kbuild: disable '...
622
  ifdef CONFIG_PROFILE_ALL_BRANCHES
a76bcf557   Arnd Bergmann   Kbuild: enable -W...
623
  KBUILD_CFLAGS	+= -O2 $(call cc-disable-warning,maybe-uninitialized,)
815eb71e7   Arnd Bergmann   Kbuild: disable '...
624
625
626
  else
  KBUILD_CFLAGS   += -O2
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
627
  endif
a76bcf557   Arnd Bergmann   Kbuild: enable -W...
628
629
  KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, \
  			$(call cc-disable-warning,maybe-uninitialized,))
69102311a   Jiri Kosina   ./Makefile: tell ...
630
631
  # Tell gcc to never replace conditional load with a non-conditional one
  KBUILD_CFLAGS	+= $(call cc-option,--param=allow-store-data-races=0)
7292ae3d5   Gleb Fotengauer-Malinovskiy   jump label: fix p...
632
633
634
635
636
  # check for 'asm goto'
  ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
  	KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
  	KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO
  endif
6b90bd4ba   Emese Revfy   GCC plugin infras...
637
  include scripts/Makefile.gcc-plugins
1873e870f   Andi Kleen   debug: Add CONFIG...
638
639
640
641
642
643
644
645
646
  ifdef CONFIG_READABLE_ASM
  # Disable optimizations that make assembler listings hard to read.
  # reorder blocks reorders the control in the function
  # ipa clone creates specialized cloned functions
  # partial inlining inlines only parts of functions
  KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
                   $(call cc-option,-fno-ipa-cp-clone,) \
                   $(call cc-option,-fno-partial-inlining)
  endif
08f67461c   Mike Frysinger   kbuild: fix detec...
647
  ifneq ($(CONFIG_FRAME_WARN),0)
35bb5b1e0   Andi Kleen   Add option to ena...
648
649
  KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
  endif
c965b105b   Kees Cook   kbuild: abort bui...
650
651
652
  # This selects the stack protector compiler flag. Testing it is delayed
  # until after .config has been reprocessed, in the prepare-compiler-check
  # target.
8779657d2   Kees Cook   stackprotector: I...
653
  ifdef CONFIG_CC_STACKPROTECTOR_REGULAR
19952a920   Kees Cook   stackprotector: U...
654
    stackp-flag := -fstack-protector
c965b105b   Kees Cook   kbuild: abort bui...
655
    stackp-name := REGULAR
6c15b327c   Jan Beulich   Makefile: fix bui...
656
657
  else
  ifdef CONFIG_CC_STACKPROTECTOR_STRONG
8779657d2   Kees Cook   stackprotector: I...
658
    stackp-flag := -fstack-protector-strong
c965b105b   Kees Cook   kbuild: abort bui...
659
    stackp-name := STRONG
19952a920   Kees Cook   stackprotector: U...
660
661
662
  else
    # Force off for distro compilers that enable stack protector by default.
    stackp-flag := $(call cc-option, -fno-stack-protector)
5d707e9c8   Tejun Heo   stackprotector: u...
663
  endif
6c15b327c   Jan Beulich   Makefile: fix bui...
664
  endif
c965b105b   Kees Cook   kbuild: abort bui...
665
666
  # Find arch-specific stack protector compiler sanity-checking script.
  ifdef CONFIG_CC_STACKPROTECTOR
228d96c60   Kees Cook   kbuild: Abort bui...
667
668
    stackp-path := $(srctree)/scripts/gcc-$(SRCARCH)_$(BITS)-has-stack-protector.sh
    stackp-check := $(wildcard $(stackp-path))
c965b105b   Kees Cook   kbuild: abort bui...
669
  endif
19952a920   Kees Cook   stackprotector: U...
670
  KBUILD_CFLAGS += $(stackp-flag)
e06b8b98d   Sam Ravnborg   kbuild: allow -fs...
671

3945bbe15   Masahiro Yamada   kbuild: move cc-o...
672
673
  ifeq ($(cc-name),clang)
  KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
3945bbe15   Masahiro Yamada   kbuild: move cc-o...
674
675
676
677
678
679
680
681
682
683
  KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
  KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
  KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
  # Quiet clang warning: comparison of unsigned expression < 0 is always false
  KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
  # CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
  # source of a reference will be _MergedGlobals and not on of the whitelisted names.
  # See modpost pattern 2
  KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
  KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
3945bbe15   Masahiro Yamada   kbuild: move cc-o...
684
685
686
687
688
  else
  
  # These warnings generated too much noise in a regular build.
  # Use make W=1 to enable them (see scripts/Makefile.extrawarn)
  KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
3945bbe15   Masahiro Yamada   kbuild: move cc-o...
689
  endif
96b086a7b   Sodagudi Prasad   kbuild: clang: di...
690
  KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
691
  ifdef CONFIG_FRAME_POINTER
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
692
  KBUILD_CFLAGS	+= -fno-omit-frame-pointer -fno-optimize-sibling-calls
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
693
  else
7e9501fde   Rabin Vincent   ARM: 6312/1: ftra...
694
695
696
697
698
699
  # 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...
700
  KBUILD_CFLAGS	+= -fomit-frame-pointer
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
701
  endif
7e9501fde   Rabin Vincent   ARM: 6312/1: ftra...
702
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
703

2062afb4f   Linus Torvalds   Fix gcc-4.9.0 mis...
704
  KBUILD_CFLAGS   += $(call cc-option, -fno-var-tracking-assignments)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
705
  ifdef CONFIG_DEBUG_INFO
866ced950   Andi Kleen   kbuild: Support s...
706
707
708
  ifdef CONFIG_DEBUG_INFO_SPLIT
  KBUILD_CFLAGS   += $(call cc-option, -gsplit-dwarf, -g)
  else
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
709
  KBUILD_CFLAGS	+= -g
866ced950   Andi Kleen   kbuild: Support s...
710
  endif
2288328ce   Behan Webster   all: LLVMLinux: C...
711
  KBUILD_AFLAGS	+= -Wa,-gdwarf-2
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
712
  endif
bfaf2dd35   Andi Kleen   Kbuild: Add a opt...
713
714
715
  ifdef CONFIG_DEBUG_INFO_DWARF4
  KBUILD_CFLAGS	+= $(call cc-option, -gdwarf-4,)
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
716

d6f4ceb79   Andi Kleen   Kbuild: Add optio...
717
  ifdef CONFIG_DEBUG_INFO_REDUCED
e82c4bb8b   Andi Kleen   Kbuild: Disable v...
718
719
  KBUILD_CFLAGS 	+= $(call cc-option, -femit-struct-debug-baseonly) \
  		   $(call cc-option,-fno-var-tracking)
d6f4ceb79   Andi Kleen   Kbuild: Add optio...
720
  endif
606576ce8   Steven Rostedt   ftrace: rename FT...
721
  ifdef CONFIG_FUNCTION_TRACER
c0a80c0c2   Heiko Carstens   ftrace: allow arc...
722
723
724
725
  ifndef CC_FLAGS_FTRACE
  CC_FLAGS_FTRACE := -pg
  endif
  export CC_FLAGS_FTRACE
a2546fae0   Steven Rostedt   ftrace: Add -mfen...
726
727
728
  ifdef CONFIG_HAVE_FENTRY
  CC_USING_FENTRY	:= $(call cc-option, -mfentry -DCC_USING_FENTRY)
  endif
c0a80c0c2   Heiko Carstens   ftrace: allow arc...
729
  KBUILD_CFLAGS	+= $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY)
a2546fae0   Steven Rostedt   ftrace: Add -mfen...
730
  KBUILD_AFLAGS	+= $(CC_USING_FENTRY)
72441cb1f   Steven Rostedt   ftrace/x86: Add s...
731
  ifdef CONFIG_DYNAMIC_FTRACE
cf4db2597   Steven Rostedt   ftrace: Rename co...
732
  	ifdef CONFIG_HAVE_C_RECORDMCOUNT
72441cb1f   Steven Rostedt   ftrace/x86: Add s...
733
734
735
736
  		BUILD_C_RECORDMCOUNT := y
  		export BUILD_C_RECORDMCOUNT
  	endif
  endif
16444a8a4   Arnaldo Carvalho de Melo   ftrace: add basic...
737
  endif
91341d4b2   Sam Ravnborg   kbuild: introduce...
738
739
740
741
  # We trigger additional mismatches with less inlining
  ifdef CONFIG_DEBUG_SECTION_MISMATCH
  KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
  endif
90ad4052e   Masahiro Yamada   kbuild: avoid con...
742
743
744
745
  ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
  KBUILD_CFLAGS	+= $(call cc-option,-ffunction-sections,)
  KBUILD_CFLAGS	+= $(call cc-option,-fdata-sections,)
  endif
e8e699317   Sam Ravnborg   [PATCH] kbuild: S...
746
  # arch Makefile may override CC so keep this after arch Makefile is included
e8f5bdb02   Rik van Riel   [PATCH] Makefile ...
747
  NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
e8e699317   Sam Ravnborg   [PATCH] kbuild: S...
748
  CHECKFLAGS     += $(NOSTDINC_FLAGS)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
749
  # warn about C99 declaration after statement
a0f97e06a   Sam Ravnborg   kbuild: enable 'm...
750
  KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
751

070b98bfd   Sam Ravnborg   kbuild: trivial f...
752
  # disable pointer signed / unsigned warnings in gcc 4.0
8417da6f2   Michal Marek   kbuild: Fix passi...
753
  KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
754

9f8d10971   Stephen Rothwell   disable stringop ...
755
756
  # disable stringop warnings in gcc 8+
  KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
fe8d0a410   Kirill Smelkov   kbuild: fix a few...
757
  # disable invalid "can't wrap" optimizations for signed / pointers
a137802ee   Linus Torvalds   Don't use '-fwrap...
758
  KBUILD_CFLAGS	+= $(call cc-option,-fno-strict-overflow)
d0115552c   Linus Torvalds   Move cc-option to...
759

3e1130970   Daniel Borkmann   kbuild: disable c...
760
761
762
763
764
765
766
767
  # clang sets -fmerge-all-constants by default as optimization, but this
  # is non-conforming behavior for C and in fact breaks the kernel, so we
  # need to disable it here generally.
  KBUILD_CFLAGS	+= $(call cc-option,-fno-merge-all-constants)
  
  # for gcc -fno-merge-all-constants disables everything, but it is fine
  # to have actual conforming behavior enabled.
  KBUILD_CFLAGS	+= $(call cc-option,-fmerge-constants)
aa7f9011b   Linus Torvalds   kbuild: add '-fno...
768
769
  # Make sure -fstack-check isn't enabled (like gentoo apparently did)
  KBUILD_CFLAGS  += $(call cc-option,-fno-stack-check,)
8f7f5c9fc   Andi Kleen   kbuild: set -fcon...
770
771
  # conserve stack if available
  KBUILD_CFLAGS   += $(call cc-option,-fconserve-stack)
809704721   Sergei Trofimovich   Makefile: enable ...
772
773
774
775
776
  # disallow errors like 'EXPORT_GPL(foo);' with missing header
  KBUILD_CFLAGS   += $(call cc-option,-Werror=implicit-int)
  
  # require functions to have arguments in prototypes, not empty 'int foo()'
  KBUILD_CFLAGS   += $(call cc-option,-Werror=strict-prototypes)
fe7c36c7b   Josh Triplett   Makefile: Build w...
777
778
  # Prohibit date/time macros, which would make the build non-deterministic
  KBUILD_CFLAGS   += $(call cc-option,-Werror=date-time)
ea8daa7b9   Daniel Wagner   kbuild: Add optio...
779
780
  # enforce correct pointer usage
  KBUILD_CFLAGS   += $(call cc-option,-Werror=incompatible-pointer-types)
c834f0e8a   Kees Cook   Kbuild: make desi...
781
782
  # Require designated initializers for all marked structures
  KBUILD_CFLAGS   += $(call cc-option,-Werror=designated-init)
40df759e2   Michal Marek   kbuild: Fix build...
783
784
  # use the deterministic mode of AR if available
  KBUILD_ARFLAGS := $(call ar-option,D)
a436bb7b8   Masahiro Yamada   kbuild: use relat...
785
786
  include scripts/Makefile.kasan
  include scripts/Makefile.extrawarn
c6d308534   Andrey Ryabinin   UBSAN: run-time u...
787
  include scripts/Makefile.ubsan
a86fe3537   Masahiro Yamada   kbuild: move extr...
788

61754c187   Michal Marek   kbuild: Allow arc...
789
790
791
792
793
  # Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the
  # last assignments
  KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
  KBUILD_AFLAGS   += $(ARCH_AFLAGS)   $(KAFLAGS)
  KBUILD_CFLAGS   += $(ARCH_CFLAGS)   $(KCFLAGS)
52bcc3308   Sam Ravnborg   kbuild: enable us...
794

18991197b   Roland McGrath   Use --build-id ld...
795
  # Use --build-id when available.
bd74370b8   Rabin Vincent   Makefile: evaluat...
796
  LDFLAGS_BUILD_ID := $(patsubst -Wl$(comma)%,%,\
f86fd3066   Sam Ravnborg   kbuild: rename ld...
797
  			      $(call cc-ldoption, -Wl$(comma)--build-id,))
6588169d5   Sam Ravnborg   kbuild: allow ass...
798
  KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
18991197b   Roland McGrath   Use --build-id ld...
799
  LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
b67067f11   Nicholas Piggin   kbuild: allow arc...
800
801
802
  ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
  LDFLAGS_vmlinux	+= $(call ld-option, --gc-sections,)
  endif
5d7d18f5b   David Howells   kbuild: make it p...
803
  ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
d79a27195   Andi Kleen   kbuild: Check if ...
804
  LDFLAGS_vmlinux	+= $(call ld-option, -X,)
5d7d18f5b   David Howells   kbuild: make it p...
805
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
806
  # Default kernel image to build when no specific target is given.
070b98bfd   Sam Ravnborg   kbuild: trivial f...
807
  # KBUILD_IMAGE may be overruled on the command line or
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
808
809
810
811
812
813
814
815
816
817
818
  # set in the environment
  # Also any assignments in arch/$(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
  
  #
f4d4ffc03   Jason Cooper   kbuild: dtbs_inst...
819
820
821
822
823
824
825
  # INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots.
  # Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as
  # an argument if needed. Otherwise it defaults to the kernel install path
  #
  export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE)
  
  #
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
826
827
  # 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...
828
  # makefile but the argument can be passed to make if needed.
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
829
  #
df9df036d   Sam Ravnborg   kbuild: fix 'make...
830
  MODLIB	= $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
831
  export MODLIB
ac031f26e   Theodore Ts'o   kbuild: add optio...
832
  #
3fbb43df9   Masahiro Yamada   kbuild: trivial -...
833
834
835
836
  # 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,
  # INSTALL_MOD_STRIP value will be used as the options to the strip command.
2ea038917   Sam Ravnborg   Revert "kbuild: s...
837

ac031f26e   Theodore Ts'o   kbuild: add optio...
838
839
  ifdef INSTALL_MOD_STRIP
  ifeq ($(INSTALL_MOD_STRIP),1)
2ea038917   Sam Ravnborg   Revert "kbuild: s...
840
  mod_strip_cmd = $(STRIP) --strip-debug
ac031f26e   Theodore Ts'o   kbuild: add optio...
841
  else
2ea038917   Sam Ravnborg   Revert "kbuild: s...
842
  mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
ac031f26e   Theodore Ts'o   kbuild: add optio...
843
844
  endif # INSTALL_MOD_STRIP=1
  else
2ea038917   Sam Ravnborg   Revert "kbuild: s...
845
  mod_strip_cmd = true
ac031f26e   Theodore Ts'o   kbuild: add optio...
846
847
  endif # INSTALL_MOD_STRIP
  export mod_strip_cmd
beb50df39   Bertrand Jacquin   kbuild: handle mo...
848
849
850
851
852
853
854
  # CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed
  # after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP
  # or CONFIG_MODULE_COMPRESS_XZ.
  
  mod_compress_cmd = true
  ifdef CONFIG_MODULE_COMPRESS
    ifdef CONFIG_MODULE_COMPRESS_GZIP
3d1450d54   Jason A. Donenfeld   Makefile: Force g...
855
      mod_compress_cmd = gzip -n -f
beb50df39   Bertrand Jacquin   kbuild: handle mo...
856
857
    endif # CONFIG_MODULE_COMPRESS_GZIP
    ifdef CONFIG_MODULE_COMPRESS_XZ
3d1450d54   Jason A. Donenfeld   Makefile: Force g...
858
      mod_compress_cmd = xz -f
beb50df39   Bertrand Jacquin   kbuild: handle mo...
859
860
861
    endif # CONFIG_MODULE_COMPRESS_XZ
  endif # CONFIG_MODULE_COMPRESS
  export mod_compress_cmd
1bf49dd4b   P J P   ./Makefile: expor...
862
863
864
  # Select initial ramdisk compression format, default is gzip(1).
  # This shall be used by the dracut(8) tool while creating an initramfs image.
  #
7ac181568   Jan Beulich   fix build with ma...
865
866
867
868
869
870
  INITRD_COMPRESS-y                  := gzip
  INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
  INITRD_COMPRESS-$(CONFIG_RD_LZMA)  := lzma
  INITRD_COMPRESS-$(CONFIG_RD_XZ)    := xz
  INITRD_COMPRESS-$(CONFIG_RD_LZO)   := lzo
  INITRD_COMPRESS-$(CONFIG_RD_LZ4)   := lz4
b7000adef   Linus Torvalds   Don't set the INI...
871
872
873
  # do not export INITRD_COMPRESS, since we didn't actually
  # choose a sane default compression above.
  # export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
874

d9d8d7ed4   Michal Marek   MODSIGN: Add opti...
875
  ifdef CONFIG_MODULE_SIG_ALL
3ee550f12   David Woodhouse   modsign: Handle s...
876
877
878
  $(eval $(call config_filename,MODULE_SIG_KEY))
  
  mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509
e2a666d52   Rusty Russell   kbuild: sign the ...
879
880
881
882
  else
  mod_sign_cmd = true
  endif
  export mod_sign_cmd
9f0c18aec   Josh Poimboeuf   objtool: Fix CONF...
883
884
885
886
887
888
  ifdef CONFIG_STACK_VALIDATION
    has_libelf := $(call try-run,\
  		echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf -,1,0)
    ifeq ($(has_libelf),1)
      objtool_target := tools/objtool FORCE
    else
9f0c18aec   Josh Poimboeuf   objtool: Fix CONF...
889
890
891
892
      SKIP_STACK_VALIDATION := 1
      export SKIP_STACK_VALIDATION
    endif
  endif
e2a666d52   Rusty Russell   kbuild: sign the ...
893

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
894
  ifeq ($(KBUILD_EXTMOD),)
cfc411e7f   David Howells   Move certificate ...
895
  core-y		+= kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
896
897
898
  
  vmlinux-dirs	:= $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
  		     $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
37d9fe478   Feng Wu   virt: Add virt di...
899
  		     $(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y)))
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
900
901
  
  vmlinux-alldirs	:= $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
37d9fe478   Feng Wu   virt: Add virt di...
902
  		     $(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-))))
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
903
904
905
906
907
908
  
  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))
3a166fc2d   Nicholas Piggin   kbuild: handle li...
909
  libs-y2		:= $(filter-out %.a, $(patsubst %/, %/built-in.o, $(libs-y)))
37d9fe478   Feng Wu   virt: Add virt di...
910
  virt-y		:= $(patsubst %/, %/built-in.o, $(virt-y))
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
911

1f2bfbd00   Sam Ravnborg   kbuild: link of v...
912
  # Externally visible symbols (used by link-vmlinux.sh)
956985705   Sam Ravnborg   kbuild: refactor ...
913
  export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
3a166fc2d   Nicholas Piggin   kbuild: handle li...
914
915
  export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y2) $(drivers-y) $(net-y) $(virt-y)
  export KBUILD_VMLINUX_LIBS := $(libs-y1)
956985705   Sam Ravnborg   kbuild: refactor ...
916
  export KBUILD_LDS          := arch/$(SRCARCH)/kernel/vmlinux.lds
1f2bfbd00   Sam Ravnborg   kbuild: link of v...
917
  export LDFLAGS_vmlinux
312a3d091   Cao jin   kbuild: trivial c...
918
  # used by scripts/package/Makefile
37d9fe478   Feng Wu   virt: Add virt di...
919
  export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools)
9bb482476   Jan Beulich   allow stripping o...
920

3a166fc2d   Nicholas Piggin   kbuild: handle li...
921
  vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) $(KBUILD_VMLINUX_LIBS)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
922

2441e78b1   Nicolas Pitre   kbuild: better ab...
923
924
925
926
927
  # Include targets which we want to execute sequentially if the rest of the
  # kernel build went well. If CONFIG_TRIM_UNUSED_KSYMS is set, this might be
  # evaluated more than once.
  PHONY += vmlinux_prereq
  vmlinux_prereq: $(vmlinux-deps) FORCE
0f836e5fe   David Woodhouse   [PATCH] Add CONFI...
928
  ifdef CONFIG_HEADERS_CHECK
0e7af8d04   David Woodhouse   [PATCH] Fix heade...
929
  	$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
0f836e5fe   David Woodhouse   [PATCH] Add CONFI...
930
  endif
3ee7b3fa2   Jan Kiszka   scripts/gdb: add ...
931
  ifdef CONFIG_GDB_SCRIPTS
8e9b46679   Masahiro Yamada   kbuild: use $(abs...
932
  	$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)
3ee7b3fa2   Jan Kiszka   scripts/gdb: add ...
933
  endif
2441e78b1   Nicolas Pitre   kbuild: better ab...
934
  ifdef CONFIG_TRIM_UNUSED_KSYMS
ba79d401f   Nicolas Ferre   kbuild: fix call ...
935
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \
865563924   Nicolas Pitre   kbuild: fix build...
936
  	  "$(MAKE) -f $(srctree)/Makefile vmlinux"
2441e78b1   Nicolas Pitre   kbuild: better ab...
937
  endif
23121ca2b   Nicolas Pitre   kbuild: create/ad...
938
939
940
  
  # standalone target for easier testing
  include/generated/autoksyms.h: FORCE
ba79d401f   Nicolas Ferre   kbuild: fix call ...
941
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh true
23121ca2b   Nicolas Pitre   kbuild: create/ad...
942

fbe6e37da   Nicholas Piggin   kbuild: add arch ...
943
944
945
  ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
  
  # Final link of vmlinux with optional arch pass after final link
312a3d091   Cao jin   kbuild: trivial c...
946
947
  cmd_link-vmlinux =                                                 \
  	$(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) ;    \
fbe6e37da   Nicholas Piggin   kbuild: add arch ...
948
  	$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
2441e78b1   Nicolas Pitre   kbuild: better ab...
949

edf69470f   Nicolas Pitre   kbuild: Fix depen...
950
  vmlinux: scripts/link-vmlinux.sh vmlinux_prereq $(vmlinux-deps) FORCE
1f2bfbd00   Sam Ravnborg   kbuild: link of v...
951
  	+$(call if_changed,link-vmlinux)
741f98fe2   Sam Ravnborg   kbuild: do sectio...
952

dd92478a1   Nicolas Pitre   kbuild: build sam...
953
954
955
956
  # Build samples along the rest of the kernel
  ifdef CONFIG_SAMPLES
  vmlinux-dirs += samples
  endif
38385f8f0   Masahiro Yamada   kbuild: trivial -...
957
  # The actual objects are generated when descending,
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
958
  # make sure no implicit rule kicks in
1f2bfbd00   Sam Ravnborg   kbuild: link of v...
959
  $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
960
961
962
963
964
965
  
  # 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...
966
  PHONY += $(vmlinux-dirs)
5bb782690   Sam Ravnborg   kbuild: rename pr...
967
  $(vmlinux-dirs): prepare scripts
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
968
  	$(Q)$(MAKE) $(build)=$@
0d0e7718a   Michal Marek   kbuild: Do not ov...
969
970
971
  define filechk_kernel.release
  	echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
  endef
83a35e360   Geert Uytterhoeven   treewide: relase ...
972
  # Store (new) KERNELRELEASE string in include/config/kernel.release
f1d28fb04   Roman Zippel   kconfig: move .ke...
973
  include/config/kernel.release: include/config/auto.conf FORCE
0d0e7718a   Michal Marek   kbuild: Do not ov...
974
  	$(call filechk,kernel.release)
cb58455c4   Sam Ravnborg   kbuild: KERNELREL...
975

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
976
  # Things we need to do before we recursively start building the kernel
5bb782690   Sam Ravnborg   kbuild: rename pr...
977
978
979
980
  # 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
981

5bb782690   Sam Ravnborg   kbuild: rename pr...
982
  # Listed in dependency order
4f1933620   Paul Smith   kbuild: change kb...
983
  PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
5bb782690   Sam Ravnborg   kbuild: rename pr...
984

86feeaa81   Sam Ravnborg   kbuild: full depe...
985
  # prepare3 is used to check if we are building in a separate output directory,
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
986
987
  # and if so do:
  # 1) Check that make has not been executed in the kernel src $(srctree)
f1d28fb04   Roman Zippel   kconfig: move .ke...
988
  prepare3: include/config/kernel.release
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
989
  ifneq ($(KBUILD_SRC),)
fd54f5028   Mike Frysinger   kbuild: use KECHO...
990
  	@$(kecho) '  Using $(srctree) as source for kernel'
c955ccafc   Roman Zippel   kconfig: fix .con...
991
  	$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
5369f5502   Michal Marek   kbuild: Print err...
992
993
  		echo >&2 "  $(srctree) is not clean, please run 'make mrproper'"; \
  		echo >&2 "  in the '$(srctree)' directory.";\
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
994
995
  		/bin/false; \
  	fi;
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
996
  endif
c965b105b   Kees Cook   kbuild: abort bui...
997
998
999
1000
  # prepare2 creates a makefile if using a separate output directory.
  # From this point forward, .config has been reprocessed, so any rules
  # that need to depend on updated CONFIG_* values can be checked here.
  prepare2: prepare3 prepare-compiler-check outputmakefile asm-generic
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1001

d183e6f57   David Howells   UAPI: Move linux/...
1002
  prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
f7f16b779   Sam Ravnborg   kbuild: drop incl...
1003
                     include/config/auto.conf
7bb9d092d   Sam Ravnborg   kbuild: fix first...
1004
  	$(cmd_crmodverdir)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1005

6520fe556   H. Peter Anvin   x86, realmode: 16...
1006
  archprepare: archheaders archscripts prepare1 scripts_basic
5bb782690   Sam Ravnborg   kbuild: rename pr...
1007

6b90bd4ba   Emese Revfy   GCC plugin infras...
1008
  prepare0: archprepare gcc-plugins
8d36a6236   Sam Ravnborg   kbuild: fix gener...
1009
  	$(Q)$(MAKE) $(build)=.
86feeaa81   Sam Ravnborg   kbuild: full depe...
1010

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1011
  # All the preparing..
b9ab5ebb1   Josh Poimboeuf   objtool: Add CONF...
1012
  prepare: prepare0 prepare-objtool
cfe39acaf   Masahiro Yamada   kbuild: re-order ...
1013
1014
1015
1016
1017
1018
1019
1020
  # Support for using generic headers in asm-generic
  PHONY += asm-generic uapi-asm-generic
  asm-generic: uapi-asm-generic
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
  	            src=asm obj=arch/$(SRCARCH)/include/generated/asm
  uapi-asm-generic:
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
  	            src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
b9ab5ebb1   Josh Poimboeuf   objtool: Add CONF...
1021
  PHONY += prepare-objtool
3b27a0c85   Josh Poimboeuf   objtool: Detect a...
1022
  prepare-objtool: $(objtool_target)
b08f331e8   Masahiro Yamada   kbuild: fix false...
1023
1024
1025
1026
1027
1028
1029
1030
  ifeq ($(SKIP_STACK_VALIDATION),1)
  ifdef CONFIG_UNWINDER_ORC
  	@echo "error: Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2
  	@false
  else
  	@echo "warning: Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" >&2
  endif
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1031

c965b105b   Kees Cook   kbuild: abort bui...
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
  # Check for CONFIG flags that require compiler support. Abort the build
  # after .config has been processed, but before the kernel build starts.
  #
  # For security-sensitive CONFIG options, we don't want to fallback and/or
  # silently change which compiler flags will be used, since that leads to
  # producing kernels with different security feature characteristics
  # depending on the compiler used. (For example, "But I selected
  # CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!")
  PHONY += prepare-compiler-check
  prepare-compiler-check: FORCE
  # Make sure compiler supports requested stack protector flag.
  ifdef stackp-name
    ifeq ($(call cc-option, $(stackp-flag)),)
  	@echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \
  		  $(stackp-flag) not supported by compiler >&2 && exit 1
    endif
  endif
  # Make sure compiler does not have buggy stack-protector support.
  ifdef stackp-check
    ifneq ($(shell $(CONFIG_SHELL) $(stackp-check) $(CC) $(KBUILD_CPPFLAGS) $(biarch)),y)
  	@echo Cannot use CONFIG_CC_STACKPROTECTOR_$(stackp-name): \
                    $(stackp-flag) available but compiler is broken >&2 && exit 1
    endif
  endif
  	@:
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1057
1058
1059
1060
1061
1062
1063
  # 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...
1064
1065
1066
1067
1068
1069
1070
  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
1071
1072
  
  define filechk_version.h
450c6076a   Jesper Juhl   Makefile: improve...
1073
1074
  	(echo \#define LINUX_VERSION_CODE $(shell                         \
  	expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
63104eec2   Sam Ravnborg   kbuild: introduce...
1075
  	echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1076
  endef
d183e6f57   David Howells   UAPI: Move linux/...
1077
  $(version_h): $(srctree)/Makefile FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1078
  	$(call filechk,version.h)
223c24a7d   Michal Marek   kbuild: Automatic...
1079
  	$(Q)rm -f $(old_version_h)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1080

273b281fa   Sam Ravnborg   kbuild: move utsr...
1081
  include/generated/utsrelease.h: include/config/kernel.release FORCE
63104eec2   Sam Ravnborg   kbuild: introduce...
1082
  	$(call filechk,utsrelease.h)
179efcb47   Vegard Nossum   kbuild: add heade...
1083
1084
  PHONY += headerdep
  headerdep:
9663d9890   Peter Foley   kbuild: make head...
1085
1086
  	$(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
  	$(srctree)/scripts/headerdep.pl -I$(srctree)/include
179efcb47   Vegard Nossum   kbuild: add heade...
1087

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1088
  # ---------------------------------------------------------------------------
8d730cfb5   David Woodhouse   Basic implementat...
1089
  # Kernel headers
8d730cfb5   David Woodhouse   Basic implementat...
1090

e6883b187   Sam Ravnborg   kbuild: refactor ...
1091
1092
  #Default location for installed headers
  export INSTALL_HDR_PATH = $(objtree)/usr
6d7162758   David Woodhouse   New 'make headers...
1093

0f042eea0   Masahiro Yamada   kbuild: fix comme...
1094
  # If we do an all arch process set dst to include/arch-$(hdr-arch)
61562f981   Nicolas Dichtel   uapi: export all ...
1095
  hdr-dst = $(if $(KBUILD_HEADERS), dst=include/arch-$(hdr-arch), dst=include)
e6883b187   Sam Ravnborg   kbuild: refactor ...
1096

052ad2749   H. Peter Anvin   kbuild: Add suppo...
1097
1098
  PHONY += archheaders
  archheaders:
6520fe556   H. Peter Anvin   x86, realmode: 16...
1099
1100
  PHONY += archscripts
  archscripts:
e6883b187   Sam Ravnborg   kbuild: refactor ...
1101
  PHONY += __headers
a9d9a400e   Masahiro Yamada   kbuild: split exp...
1102
  __headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts
e1b702cf2   Mike Waychison   KBuild: silence "...
1103
  	$(Q)$(MAKE) $(build)=scripts build_unifdef
e6883b187   Sam Ravnborg   kbuild: refactor ...
1104
1105
  
  PHONY += headers_install_all
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1106
1107
  headers_install_all:
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
6d7162758   David Woodhouse   New 'make headers...
1108

8d730cfb5   David Woodhouse   Basic implementat...
1109
  PHONY += headers_install
e6883b187   Sam Ravnborg   kbuild: refactor ...
1110
  headers_install: __headers
10b63956f   David Howells   UAPI: Plumb the U...
1111
1112
  	$(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
  	  $(error Headers not exportable for the $(SRCARCH) architecture))
a8ff49a1d   Masahiro Yamada   kbuild: pass dst=...
1113
  	$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include
61562f981   Nicolas Dichtel   uapi: export all ...
1114
  	$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi $(hdr-dst)
8d730cfb5   David Woodhouse   Basic implementat...
1115

1f85712e6   Mike Frysinger   [PATCH] new tople...
1116
1117
  PHONY += headers_check_all
  headers_check_all: headers_install_all
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1118
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1f85712e6   Mike Frysinger   [PATCH] new tople...
1119

684753599   David Woodhouse   Basic implementat...
1120
1121
  PHONY += headers_check
  headers_check: headers_install
a8ff49a1d   Masahiro Yamada   kbuild: pass dst=...
1122
  	$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1
05d8cba4a   Masahiro Yamada   kbuild: skip inst...
1123
  	$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi $(hdr-dst) HDRCHECK=1
684753599   David Woodhouse   Basic implementat...
1124

8d730cfb5   David Woodhouse   Basic implementat...
1125
  # ---------------------------------------------------------------------------
5a5da78b3   Shuah Khan   kbuild: kselftest...
1126
1127
1128
1129
  # Kernel selftest
  
  PHONY += kselftest
  kselftest:
2bc84526d   Shuah Khan   Makefile: kselfte...
1130
  	$(Q)$(MAKE) -C $(srctree)/tools/testing/selftests run_tests
5a5da78b3   Shuah Khan   kbuild: kselftest...
1131

801d2e9f1   Shuah Khan   Makefile: add kse...
1132
  PHONY += kselftest-clean
dcb825a9f   Wang Long   kselftest: add ks...
1133
  kselftest-clean:
2bc84526d   Shuah Khan   Makefile: kselfte...
1134
  	$(Q)$(MAKE) -C $(srctree)/tools/testing/selftests clean
dcb825a9f   Wang Long   kselftest: add ks...
1135

3d6dee7af   Bamvor Jian Zhang   Makefile: add kse...
1136
1137
1138
1139
1140
1141
1142
  PHONY += kselftest-merge
  kselftest-merge:
  	$(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!))
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
  		-m $(objtree)/.config \
  		$(srctree)/tools/testing/selftests/*/config
  	+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
5a5da78b3   Shuah Khan   kbuild: kselftest...
1143
  # ---------------------------------------------------------------------------
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1144
1145
1146
  # Modules
  
  ifdef CONFIG_MODULES
070b98bfd   Sam Ravnborg   kbuild: trivial f...
1147
  # By default, build modules as well
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1148

73d1393eb   Michal Marek   kbuild: Generate ...
1149
  all: modules
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1150

3fbb43df9   Masahiro Yamada   kbuild: trivial -...
1151
  # Build modules
551559e13   Tejun Heo   kbuild: implement...
1152
  #
3fbb43df9   Masahiro Yamada   kbuild: trivial -...
1153
1154
1155
  # 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
1156

4f1933620   Paul Smith   kbuild: change kb...
1157
  PHONY += modules
2da30e703   Michal Marek   kbuild: Generate ...
1158
  modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
551559e13   Tejun Heo   kbuild: implement...
1159
  	$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
fd54f5028   Mike Frysinger   kbuild: use KECHO...
1160
  	@$(kecho) '  Building modules, stage 2.';
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1161
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1162

a6c366324   Michal Marek   kbuild: Do not un...
1163
1164
  modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
  	$(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
73d1393eb   Michal Marek   kbuild: Generate ...
1165
  %/modules.builtin: include/config/auto.conf
a6c366324   Michal Marek   kbuild: Do not un...
1166
  	$(Q)$(MAKE) $(modbuiltin)=$*
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1167
1168
  
  # Target to prepare building external modules
4f1933620   Paul Smith   kbuild: change kb...
1169
  PHONY += modules_prepare
5bb782690   Sam Ravnborg   kbuild: rename pr...
1170
  modules_prepare: prepare scripts
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1171
1172
  
  # Target to install modules
4f1933620   Paul Smith   kbuild: change kb...
1173
  PHONY += modules_install
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1174
  modules_install: _modinst_ _modinst_post
4f1933620   Paul Smith   kbuild: change kb...
1175
  PHONY += _modinst_
2da30e703   Michal Marek   kbuild: Generate ...
1176
  _modinst_:
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1177
1178
1179
  	@rm -rf $(MODLIB)/kernel
  	@rm -f $(MODLIB)/source
  	@mkdir -p $(MODLIB)/kernel
8e9b46679   Masahiro Yamada   kbuild: use $(abs...
1180
  	@ln -s $(abspath $(srctree)) $(MODLIB)/source
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1181
1182
  	@if [ ! $(objtree) -ef  $(MODLIB)/build ]; then \
  		rm -f $(MODLIB)/build ; \
7e1c04779   Michal Marek   kbuild: Use relat...
1183
  		ln -s $(CURDIR) $(MODLIB)/build ; \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1184
  	fi
551559e13   Tejun Heo   kbuild: implement...
1185
  	@cp -f $(objtree)/modules.order $(MODLIB)/
bc081dd6e   Michal Marek   kbuild: generate ...
1186
  	@cp -f $(objtree)/modules.builtin $(MODLIB)/
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1187
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1188

50a8ec31c   Sam Ravnborg   kbuild: disable d...
1189
  # This depmod is only for convenience to give the initial
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1190
1191
  # 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...
1192
  PHONY += _modinst_post
6d128e1e7   Linus Torvalds   Revert "Makefile:...
1193
  _modinst_post: _modinst_
50a8ec31c   Sam Ravnborg   kbuild: disable d...
1194
  	$(call cmd,depmod)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1195

d890f510c   Josh Boyer   MODSIGN: Add modu...
1196
1197
1198
1199
1200
  ifeq ($(CONFIG_MODULE_SIG), y)
  PHONY += modules_sign
  modules_sign:
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
  endif
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1201
1202
1203
1204
  else # CONFIG_MODULES
  
  # Modules not configured
  # ---------------------------------------------------------------------------
612e47cec   Masahiro Yamada   kbuild: specify m...
1205
1206
  PHONY += modules modules_install
  modules modules_install:
5369f5502   Michal Marek   kbuild: Print err...
1207
1208
1209
1210
1211
  	@echo >&2
  	@echo >&2 "The present kernel configuration has modules disabled."
  	@echo >&2 "Type 'make config' and enable loadable module support."
  	@echo >&2 "Then build a kernel with module support enabled."
  	@echo >&2
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1212
1213
1214
  	@exit 1
  
  endif # CONFIG_MODULES
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1215
1216
1217
1218
1219
1220
1221
1222
1223
  ###
  # 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)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1224
1225
  
  # Directories & files removed with 'make mrproper'
d8ecc5cd8   Sam Ravnborg   kbuild: asm-gener...
1226
  MRPROPER_DIRS  += include/config usr/include include/generated          \
3fbb43df9   Masahiro Yamada   kbuild: trivial -...
1227
  		  arch/*/include/generated .tmp_objdiff
c22bd32c6   Masahiro Yamada   kbuild: drop $(ve...
1228
  MRPROPER_FILES += .config .config.old .version .old_version \
d5b719365   Rusty Russell   MODSIGN: Make mrp...
1229
  		  Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
fb1179499   David Woodhouse   modsign: Use sing...
1230
1231
  		  signing_key.pem signing_key.priv signing_key.x509	\
  		  x509.genkey extra_certificates signing_key.x509.keyid	\
3ee7b3fa2   Jan Kiszka   scripts/gdb: add ...
1232
  		  signing_key.x509.signer vmlinux-gdb.py
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1233
1234
1235
1236
1237
  
  # clean - Delete most, but leave enough to build external modules
  #
  clean: rm-dirs  := $(CLEAN_DIRS)
  clean: rm-files := $(CLEAN_FILES)
fb68d4be9   Gerard Snitselaar   kbuild: clean up ...
1238
  clean-dirs      := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1239

bd1ee804a   Pawel Moll   kbuild: Do not re...
1240
  PHONY += $(clean-dirs) clean archclean vmlinuxclean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1241
1242
  $(clean-dirs):
  	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
bd1ee804a   Pawel Moll   kbuild: Do not re...
1243
1244
  vmlinuxclean:
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
fbe6e37da   Nicholas Piggin   kbuild: add arch ...
1245
  	$(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean)
bd1ee804a   Pawel Moll   kbuild: Do not re...
1246
1247
  
  clean: archclean vmlinuxclean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1248
1249
1250
1251
1252
  
  # mrproper - Delete all generated files, including .config
  #
  mrproper: rm-dirs  := $(wildcard $(MRPROPER_DIRS))
  mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
cb43fb577   Mauro Carvalho Chehab   docs: remove DocB...
1253
  mrproper-dirs      := $(addprefix _mrproper_,scripts)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1254

4f1933620   Paul Smith   kbuild: change kb...
1255
  PHONY += $(mrproper-dirs) mrproper archmrproper
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1256
1257
1258
1259
1260
1261
1262
1263
1264
  $(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...
1265
  PHONY += distclean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1266
1267
1268
  
  distclean: mrproper
  	@find $(srctree) $(RCS_FIND_IGNORE) \
070b98bfd   Sam Ravnborg   kbuild: trivial f...
1269
  		\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
f78271dfb   Masahiro Yamada   kbuild: drop unne...
1270
1271
  		-o -name '*.bak' -o -name '#*#' -o -name '*%' \
  		-o -name 'core' \) \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1272
1273
1274
1275
1276
1277
  		-type f -print | xargs rm -f
  
  
  # Packaging of the kernel to various formats
  # ---------------------------------------------------------------------------
  # rpm target kept for backward compatibility
c79624c1a   Michal Marek   kbuild: Fix packa...
1278
  package-dir	:= scripts/package
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1279

bafb67470   Arnaldo Carvalho de Melo   perf tools: Allow...
1280
1281
  %src-pkg: FORCE
  	$(Q)$(MAKE) $(build)=$(package-dir) $@
031ecc6de   Zach Brown   kbuild: add depen...
1282
  %pkg: include/config/kernel.release FORCE
6c2133e11   Sam Ravnborg   kbuild: fix make ...
1283
  	$(Q)$(MAKE) $(build)=$(package-dir) $@
031ecc6de   Zach Brown   kbuild: add depen...
1284
  rpm: include/config/kernel.release FORCE
6c2133e11   Sam Ravnborg   kbuild: fix make ...
1285
  	$(Q)$(MAKE) $(build)=$(package-dir) $@
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1286
1287
1288
1289
  
  
  # Brief documentation of the typical targets used
  # ---------------------------------------------------------------------------
5dffbe811   Segher Boessenkool   kbuild: show defc...
1290
  boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
a1e7b7bb1   Konstantin Khlebnikov   Makefile: sort li...
1291
  boards := $(sort $(notdir $(boards)))
5dffbe811   Segher Boessenkool   kbuild: show defc...
1292
1293
  board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
  board-dirs := $(sort $(notdir $(board-dirs:/=)))
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1294

fe69b420d   Masahiro Yamada   kbuild: mark help...
1295
  PHONY += help
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1296
1297
  help:
  	@echo  'Cleaning targets:'
5ea084ef9   Samuel Tardieu   Use consistent ca...
1298
  	@echo  '  clean		  - Remove most generated files but keep the config and'
5cc8d246d   Jesper Juhl   kbuild: add distc...
1299
  	@echo  '                    enough build support to build external modules'
5ea084ef9   Samuel Tardieu   Use consistent ca...
1300
  	@echo  '  mrproper	  - Remove all generated files + config + various backup files'
5cc8d246d   Jesper Juhl   kbuild: add distc...
1301
  	@echo  '  distclean	  - mrproper + remove editor backup and patch files'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1302
1303
1304
1305
1306
1307
1308
1309
  	@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 ...
1310
  	@echo  '  modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1311
  	@echo  '  dir/            - Build all files in dir and below'
40ab87a40   Wang YanQing   Makefile: revert ...
1312
  	@echo  '  dir/file.[ois]  - Build specified target only'
433db3e26   Vinícius Tinti   kbuild: Add suppo...
1313
1314
  	@echo  '  dir/file.ll     - Build the LLVM assembly file'
  	@echo  '                    (requires compiler support for LLVM assembly generation)'
627189797   Joe Perches   Makefile: Documen...
1315
1316
  	@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...
1317
  	@echo  '  dir/file.ko     - Build module including final link'
c4d5ee67c   Robert P. J. Day   kbuild: "make pre...
1318
  	@echo  '  modules_prepare - Set up for building external modules'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1319
1320
  	@echo  '  tags/TAGS	  - Generate tags file for editors'
  	@echo  '  cscope	  - Generate cscope index'
f4ed1009f   Jianbin Kang   kbuild: add GNU G...
1321
  	@echo  '  gtags           - Generate GNU GLOBAL index'
3f1d9a6ce   Michal Marek   kbuild: make -s s...
1322
1323
1324
  	@echo  '  kernelrelease	  - Output the release version string (use with make -s)'
  	@echo  '  kernelversion	  - Output the version stored in Makefile (use with make -s)'
  	@echo  '  image_name	  - Output the image name (use with make -s)'
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1325
  	@echo  '  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
59df3230f   Geert Uytterhoeven   [PATCH] `make hel...
1326
  	 echo  '                    (default: $(INSTALL_HDR_PATH))'; \
2fb9b1bd9   Sam Ravnborg   kbuild: prepare h...
1327
  	 echo  ''
31b8cc807   Randy Dunlap   make help: add to...
1328
  	@echo  'Static analysers:'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1329
1330
  	@echo  '  checkstack      - Generate a list of stack hogs'
  	@echo  '  namespacecheck  - Name space analysis on compiled kernel'
aa025e7d5   Sam Ravnborg   kbuild: document ...
1331
  	@echo  '  versioncheck    - Sanity check on version.h usage'
ec2d987f9   Randy Dunlap   kbuild: add 'incl...
1332
  	@echo  '  includecheck    - Check for duplicate included header files'
295ac0518   Adrian Bunk   kbuild: call expo...
1333
  	@echo  '  export_report   - List the usages of all exported symbols'
179efcb47   Vegard Nossum   kbuild: add heade...
1334
  	@echo  '  headers_check   - Sanity check on exported headers'
74425eee7   Nicolas Palix   Add a target to u...
1335
1336
1337
  	@echo  '  headerdep       - Detect inclusion cycles in headers'
  	@$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
  	@echo  ''
31b8cc807   Randy Dunlap   make help: add to...
1338
  	@echo  'Kernel selftest:'
5a5da78b3   Shuah Khan   kbuild: kselftest...
1339
1340
1341
  	@echo  '  kselftest       - Build and run kernel selftest (run as root)'
  	@echo  '                    Build, install, and boot kernel before'
  	@echo  '                    running kselftest on it'
dcb825a9f   Wang Long   kselftest: add ks...
1342
  	@echo  '  kselftest-clean - Remove all generated kselftest files'
bbfe63b60   Randy Dunlap   Makefile: kselfte...
1343
  	@echo  '  kselftest-merge - Merge all the config dependencies of kselftest to existing'
3d6dee7af   Bamvor Jian Zhang   Makefile: add kse...
1344
  	@echo  '                    .config.'
5a5da78b3   Shuah Khan   kbuild: kselftest...
1345
  	@echo  ''
31b8cc807   Randy Dunlap   make help: add to...
1346
1347
1348
1349
  	@echo 'Userspace tools targets:'
  	@echo '  use "make tools/help"'
  	@echo '  or  "cd tools; make help"'
  	@echo  ''
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1350
  	@echo  'Kernel packaging:'
6c2133e11   Sam Ravnborg   kbuild: fix make ...
1351
  	@$(MAKE) $(build)=$(package-dir) help
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1352
1353
  	@echo  ''
  	@echo  'Documentation targets:'
cb43fb577   Mauro Carvalho Chehab   docs: remove DocB...
1354
  	@$(MAKE) -f $(srctree)/Documentation/Makefile dochelp
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1355
  	@echo  ''
01dee1881   Andres Salomon   kbuild: fix help ...
1356
  	@echo  'Architecture specific targets ($(SRCARCH)):'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1357
  	@$(if $(archhelp),$(archhelp),\
01dee1881   Andres Salomon   kbuild: fix help ...
1358
  		echo '  No architecture specific help defined for $(SRCARCH)')
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1359
1360
1361
1362
1363
1364
  	@echo  ''
  	@$(if $(boards), \
  		$(foreach b, $(boards), \
  		printf "  %-24s - Build for %s\
  " $(b) $(subst _defconfig,,$(b));) \
  		echo '')
5dffbe811   Segher Boessenkool   kbuild: show defc...
1365
1366
1367
1368
1369
1370
1371
  	@$(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
1372
1373
  
  	@echo  '  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
45d506bd6   Sam Ravnborg   kbuild: make V=2 ...
1374
  	@echo  '  make V=2   [targets] 2 => give reason for rebuild of target'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1375
  	@echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
9ba26a728   Cao jin   Kbuild: tiny corr...
1376
  	@echo  '  make C=1   [targets] Check re-compiled c source with $$CHECK (sparse by default)'
701842e3b   Dustin Kirkland   kbuild: documenta...
1377
  	@echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
af07ce3e7   Ingo Molnar   Merge branch 'tip...
1378
  	@echo  '  make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
28bc20dcc   Sam Ravnborg   kbuild: implement...
1379
1380
1381
1382
  	@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 ...
1383
  	@echo  '		Multiple levels can be combined with W=12 or W=123'
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1384
1385
1386
  	@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...
1387
1388
1389
  help-board-dirs := $(addprefix help-,$(board-dirs))
  
  help-boards: $(help-board-dirs)
fbae4d585   Michal Marek   kbuild: Fix make ...
1390
  boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)))
5dffbe811   Segher Boessenkool   kbuild: show defc...
1391
1392
1393
1394
1395
1396
1397
1398
  
  $(help-board-dirs): help-%:
  	@echo  'Architecture specific targets ($(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
1399
1400
  # Documentation targets
  # ---------------------------------------------------------------------------
18afab8c1   Mauro Carvalho Chehab   docs: Makefile: r...
1401
  DOC_TARGETS := xmldocs latexdocs pdfdocs htmldocs epubdocs cleandocs linkcheckdocs
22cba31ba   Jani Nikula   Documentation/sph...
1402
1403
  PHONY += $(DOC_TARGETS)
  $(DOC_TARGETS): scripts_basic FORCE
cb43fb577   Mauro Carvalho Chehab   docs: remove DocB...
1404
  	$(Q)$(MAKE) $(build)=Documentation $@
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
  
  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...
1422
  #                      Install the modules built in the module directory
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1423
1424
1425
1426
  #                      Assumes install directory is already created
  
  # We are always building modules
  KBUILD_MODULES := 1
4f1933620   Paul Smith   kbuild: change kb...
1427
  PHONY += crmodverdir
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1428
  crmodverdir:
7bb9d092d   Sam Ravnborg   kbuild: fix first...
1429
  	$(cmd_crmodverdir)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1430

4f1933620   Paul Smith   kbuild: change kb...
1431
  PHONY += $(objtree)/Module.symvers
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1432
1433
1434
1435
1436
1437
1438
1439
  $(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...
1440
  PHONY += $(module-dirs) modules
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1441
1442
1443
1444
  $(module-dirs): crmodverdir $(objtree)/Module.symvers
  	$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
  
  modules: $(module-dirs)
fd54f5028   Mike Frysinger   kbuild: use KECHO...
1445
  	@$(kecho) '  Building modules, stage 2.';
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1446
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1447

4f1933620   Paul Smith   kbuild: change kb...
1448
  PHONY += modules_install
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1449
  modules_install: _emodinst_ _emodinst_post
e63046630   Adrian Bunk   kbuild: remove a ...
1450

4f1933620   Paul Smith   kbuild: change kb...
1451
1452
  install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
  PHONY += _emodinst_
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1453
  _emodinst_:
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1454
  	$(Q)mkdir -p $(MODLIB)/$(install-dir)
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1455
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1456

4f1933620   Paul Smith   kbuild: change kb...
1457
  PHONY += _emodinst_post
a67dc21a3   Sam Ravnborg   kbuild: run depmo...
1458
1459
  _emodinst_post: _emodinst_
  	$(call cmd,depmod)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1460
  clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
4f1933620   Paul Smith   kbuild: change kb...
1461
  PHONY += $(clean-dirs) clean
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1462
1463
1464
1465
  $(clean-dirs):
  	$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
  
  clean:	rm-dirs := $(MODVERDIR)
88d7be031   Michal Marek   kbuild: Use a sin...
1466
  clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1467

fe69b420d   Masahiro Yamada   kbuild: mark help...
1468
  PHONY += help
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1469
1470
1471
1472
1473
1474
1475
1476
  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...
1477
1478
  
  # Dummies...
4f1933620   Paul Smith   kbuild: change kb...
1479
  PHONY += prepare scripts
06300b21f   Sam Ravnborg   kbuild: support b...
1480
1481
  prepare: ;
  scripts: ;
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1482
  endif # KBUILD_EXTMOD
88d7be031   Michal Marek   kbuild: Use a sin...
1483
1484
1485
  clean: $(clean-dirs)
  	$(call cmd,rmdirs)
  	$(call cmd,rmfiles)
43f67c981   Kevin Cernekee   kbuild: Fix GNU m...
1486
  	@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
88d7be031   Michal Marek   kbuild: Use a sin...
1487
  		\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
addbcdbbf   David Howells   MODSIGN: Provide ...
1488
  		-o -name '*.ko.*' \
866ced950   Andi Kleen   kbuild: Support s...
1489
  		-o -name '*.dwo'  \
d523b255d   Rasmus Villemoes   kbuild: remove *....
1490
  		-o -name '*.su'  \
88d7be031   Michal Marek   kbuild: Use a sin...
1491
1492
1493
  		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
  		-o -name '*.symtypes' -o -name 'modules.order' \
  		-o -name modules.builtin -o -name '.tmp_*.o.*' \
6b90bd4ba   Emese Revfy   GCC plugin infras...
1494
  		-o -name '*.c.[012]*.*' \
433db3e26   Vinícius Tinti   kbuild: Add suppo...
1495
  		-o -name '*.ll' \
88d7be031   Michal Marek   kbuild: Use a sin...
1496
  		-o -name '*.gcno' \) -type f -print | xargs rm -f
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1497
1498
  # Generate tags for editors
  # ---------------------------------------------------------------------------
a680eedc6   Sam Ravnborg   tags and cscope s...
1499
1500
  quiet_cmd_tags = GEN     $@
        cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1501

f4ed1009f   Jianbin Kang   kbuild: add GNU G...
1502
  tags TAGS cscope gtags: FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1503
  	$(call cmd,tags)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1504
1505
  # Scripts to check various things for consistency
  # ---------------------------------------------------------------------------
279f3dd35   Peter Foley   kbuild: add targe...
1506
  PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1507
  includecheck:
436f876cc   Peter Foley   kbuild: make incl...
1508
  	find $(srctree)/* $(RCS_FIND_IGNORE) \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1509
  		-name '*.[hcS]' -type f -print | sort \
800074345   Geert Uytterhoeven   kbuild: Add missi...
1510
  		| xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1511
1512
  
  versioncheck:
2ee2d2928   Peter Foley   kbuild: make vers...
1513
  	find $(srctree)/* $(RCS_FIND_IGNORE) \
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1514
  		-name '*.[hcS]' -type f -print | sort \
800074345   Geert Uytterhoeven   kbuild: Add missi...
1515
  		| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1516

74425eee7   Nicolas Palix   Add a target to u...
1517
1518
  coccicheck:
  	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1519
1520
  namespacecheck:
  	$(PERL) $(srctree)/scripts/namespace.pl
295ac0518   Adrian Bunk   kbuild: call expo...
1521
1522
  export_report:
  	$(PERL) $(srctree)/scripts/export_report.pl
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1523
1524
  endif #ifeq ($(config-targets),1)
  endif #ifeq ($(mixed-targets),1)
c398ff00f   Mike Marciniszyn   kbuild: fix error...
1525
  PHONY += checkstack kernelrelease kernelversion image_name
e3ccf6e36   Jeff Dike   [PATCH] uml: add ...
1526

011e3a9ad   Jeff Dike   [PATCH] Fix cross...
1527
1528
1529
1530
1531
1532
1533
1534
1535
  # 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
1536
1537
  checkstack:
  	$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
011e3a9ad   Jeff Dike   [PATCH] Fix cross...
1538
  	$(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1539

7b8ea53d7   Amerigo Wang   makefile: not nee...
1540
1541
  kernelrelease:
  	@echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
01ab17887   Amerigo Wang   Makefile: "make k...
1542

cb58455c4   Sam Ravnborg   kbuild: KERNELREL...
1543
  kernelversion:
2244cbd8a   Sam Ravnborg   kbuild: create .k...
1544
  	@echo $(KERNELVERSION)
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1545

c398ff00f   Mike Marciniszyn   kbuild: fix error...
1546
1547
  image_name:
  	@echo $(KBUILD_IMAGE)
ea01fa9f6   Borislav Petkov   tools: Connect to...
1548
1549
  # Clear a bunch of variables before executing the submake
  tools/: FORCE
bf35182ff   David Howells   tools: Honour the...
1550
  	$(Q)mkdir -p $(objtree)/tools
8e9b46679   Masahiro Yamada   kbuild: use $(abs...
1551
  	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/
ea01fa9f6   Borislav Petkov   tools: Connect to...
1552
1553
  
  tools/%: FORCE
bf35182ff   David Howells   tools: Honour the...
1554
  	$(Q)mkdir -p $(objtree)/tools
8e9b46679   Masahiro Yamada   kbuild: use $(abs...
1555
  	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(tools_silent) $(filter --j% -j,$(MAKEFLAGS))" O=$(abspath $(objtree)) subdir=tools -C $(src)/tools/ $*
ea01fa9f6   Borislav Petkov   tools: Connect to...
1556

06300b21f   Sam Ravnborg   kbuild: support b...
1557
1558
  # Single targets
  # ---------------------------------------------------------------------------
bc2546a67   Sam Ravnborg   kbuild: fix build...
1559
  # Single targets are compatible with:
e1b8513d2   Robert P. J. Day   Typoes: "whith" ...
1560
  # - build with mixed source and output
bc2546a67   Sam Ravnborg   kbuild: fix build...
1561
1562
1563
1564
1565
1566
1567
  # - 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 ...
1568
          build-dir  = $(patsubst %/,%,$(dir $@))
bc2546a67   Sam Ravnborg   kbuild: fix build...
1569
1570
1571
1572
1573
1574
          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 ...
1575
  %.s: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1576
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1577
  %.i: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1578
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1579
  %.o: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1580
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1581
  %.lst: %.c prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1582
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1583
  %.s: %.S prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1584
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
f6ecebd65   Sam Ravnborg   kbuild: fix make ...
1585
  %.o: %.S prepare scripts FORCE
bc2546a67   Sam Ravnborg   kbuild: fix build...
1586
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
15fde6751   Andreas Gruenbacher   kbuild: support f...
1587
1588
  %.symtypes: %.c prepare scripts FORCE
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
433db3e26   Vinícius Tinti   kbuild: Add suppo...
1589
1590
  %.ll: %.c prepare scripts FORCE
  	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
06300b21f   Sam Ravnborg   kbuild: support b...
1591

bc2546a67   Sam Ravnborg   kbuild: fix build...
1592
  # Modules
31110ebbe   Sam Ravnborg   kbuild: fix make ...
1593
1594
1595
1596
  /: prepare scripts FORCE
  	$(cmd_crmodverdir)
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
  	$(build)=$(build-dir)
8e2faea87   Peter Foley   Make Documenation...
1597
  # Make sure the latest headers are built for Documentation
ddea05fa1   Arnd Bergmann   kbuild: make samp...
1598
  Documentation/ samples/: headers_install
31110ebbe   Sam Ravnborg   kbuild: fix make ...
1599
  %/: prepare scripts FORCE
7bb9d092d   Sam Ravnborg   kbuild: fix first...
1600
  	$(cmd_crmodverdir)
06300b21f   Sam Ravnborg   kbuild: support b...
1601
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
bc2546a67   Sam Ravnborg   kbuild: fix build...
1602
1603
  	$(build)=$(build-dir)
  %.ko: prepare scripts FORCE
7bb9d092d   Sam Ravnborg   kbuild: fix first...
1604
  	$(cmd_crmodverdir)
06300b21f   Sam Ravnborg   kbuild: support b...
1605
  	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
bc2546a67   Sam Ravnborg   kbuild: fix build...
1606
  	$(build)=$(build-dir) $(@:.ko=.o)
b805aa0e7   Sam Ravnborg   kbuild: make -rR ...
1607
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
06300b21f   Sam Ravnborg   kbuild: support b...
1608

38385f8f0   Masahiro Yamada   kbuild: trivial -...
1609
  # FIXME Should go into a make.lib or something
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1610
1611
1612
1613
1614
1615
1616
  # ===========================================================================
  
  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" -> ...
1617
  # Run depmod only if we have System.map and depmod is executable
50a8ec31c   Sam Ravnborg   kbuild: disable d...
1618
  quiet_cmd_depmod = DEPMOD  $(KERNELRELEASE)
569658ddd   Michal Marek   kbuild: Call depm...
1619
        cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
b92021b09   Rusty Russell   CONFIG_SYMBOL_PRE...
1620
                     $(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
50a8ec31c   Sam Ravnborg   kbuild: disable d...
1621

7bb9d092d   Sam Ravnborg   kbuild: fix first...
1622
  # Create temporary dir for module support files
ab19f8794   Sam Ravnborg   kbuild: fix modul...
1623
1624
1625
  # 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
1626

1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1627
1628
1629
1630
1631
1632
1633
1634
1635
  # 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
1636
  endif	# skip-makefile
4f1933620   Paul Smith   kbuild: change kb...
1637
  PHONY += FORCE
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
1638
  FORCE:
4f1933620   Paul Smith   kbuild: change kb...
1639

4f1933620   Paul Smith   kbuild: change kb...
1640
  # Declare the contents of the .PHONY variable as phony.  We keep that
fe8d0a410   Kirill Smelkov   kbuild: fix a few...
1641
  # information in a variable so we can use it in if_changed and friends.
4f1933620   Paul Smith   kbuild: change kb...
1642
  .PHONY: $(PHONY)