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February 22, 2015 18:21
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VERSION = 4
March 26, 2016 16:03
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PATCHLEVEL = 6
May 29, 2011 17:43
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SUBLEVEL = 0
April 3, 2016 09:09
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EXTRAVERSION = -rc2
October 11, 2015 11:09
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NAME = Blurry Fish Butt
April 16, 2005 15:20
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# *DOCUMENTATION*
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# To see a list of typical targets execute "make help"
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# More info can be located in ./README
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# Comments in this file are targeted only to the developer, do not
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# expect to learn how to build the kernel reading this file.
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# o Do not use make's built-in rules and variables
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# (this increases performance and avoids hard-to-debug behaviour);
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# o Look for make include files relative to root of kernel src
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MAKEFLAGS += -rR --include-dir=$(CURDIR)
April 16, 2005 15:20
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# Avoid funny character set dependencies
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unexport LC_ALL
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LC_COLLATE=C
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LC_NUMERIC=C
January 8, 2010 12:25
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export LC_COLLATE LC_NUMERIC
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# Avoid interference with shell env settings
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unexport GREP_OPTIONS
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April 16, 2005 15:20
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# We are using a recursive build, so we need to do a little thinking
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# to get the ordering right.
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#
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# Most importantly: sub-Makefiles should only ever modify files in
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# their own directory. If in some directory we have a dependency on
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# a file in another dir (which doesn't happen often, but it's often
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# unavoidable when linking the built-in.o targets which finally
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# turn into vmlinux), we will call a sub make in that other dir, and
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# after that we are sure that everything which is in that other dir
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# is now up to date.
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#
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# The only cases where we need to modify files which have global
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# effects are thus separated out and done before the recursive
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# descending is started. They are now explicitly listed as the
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# prepare rule.
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# Beautify output
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# ---------------------------------------------------------------------------
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#
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# Normally, we echo the whole command before executing it. By making
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# that echo $($(quiet)$(cmd)), we now have the possibility to set
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# $(quiet) to choose other forms of output instead, e.g.
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#
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# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
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# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
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#
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# If $(quiet) is empty, the whole command will be printed.
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# If it is set to "quiet_", only the short version will be printed.
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# If it is set to "silent_", nothing will be printed at all, since
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# the variable $(silent_cmd_cc_o_c) doesn't exist.
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#
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# A simple variant is to prefix commands with $(Q) - that's useful
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# for commands that shall be hidden in non-verbose mode.
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#
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# $(Q)ln $@ :<
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#
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# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
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# If KBUILD_VERBOSE equals 1 then the above command is displayed.
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#
April 16, 2005 15:20
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# To put more focus on warnings, be less verbose as default
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# Use 'make V=1' to see the full commands
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ifeq ("$(origin V)", "command line")
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KBUILD_VERBOSE = $(V)
April 16, 2005 15:20
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endif
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ifndef KBUILD_VERBOSE
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KBUILD_VERBOSE = 0
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endif
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ifeq ($(KBUILD_VERBOSE),1)
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quiet =
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Q =
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else
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quiet=quiet_
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Q = @
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endif
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# If the user is running make -s (silent mode), suppress echoing of
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# commands
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ifneq ($(filter 4.%,$(MAKE_VERSION)),) # make-4
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ifneq ($(filter %s ,$(firstword x$(MAKEFLAGS))),)
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quiet=silent_
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endif
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else # make-3.8x
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ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
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quiet=silent_
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endif
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endif
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export quiet Q KBUILD_VERBOSE
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April 16, 2005 15:20
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# kbuild supports saving output files in a separate directory.
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# To locate output files in a separate directory two syntaxes are supported.
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# In both cases the working directory must be the root of the kernel src.
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# 1) O=
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# Use "make O=dir/to/store/output/files/"
June 25, 2006 00:07
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#
April 16, 2005 15:20
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# 2) Set KBUILD_OUTPUT
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# Set the environment variable KBUILD_OUTPUT to point to the directory
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# where the output files shall be placed.
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# export KBUILD_OUTPUT=dir/to/store/output/files/
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# make
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#
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# The O= assignment takes precedence over the KBUILD_OUTPUT environment
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# variable.
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# KBUILD_SRC is set on invocation of make in OBJ directory
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# KBUILD_SRC is not intended to be used by the regular user (for now)
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ifeq ($(KBUILD_SRC),)
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# OK, Make called in directory where kernel src resides
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# Do we want to locate output files in a separate directory?
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ifeq ("$(origin O)", "command line")
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KBUILD_OUTPUT := $(O)
April 16, 2005 15:20
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endif
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# That's our default target when none is given on the command line
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PHONY := _all
April 16, 2005 15:20
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_all:
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# Cancel implicit rules on top Makefile
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$(CURDIR)/Makefile Makefile: ;
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April 16, 2005 15:20
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ifneq ($(KBUILD_OUTPUT),)
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# Invoke a second make in the output directory, passing relevant variables
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# check that the output directory actually exists
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saved-output := $(KBUILD_OUTPUT)
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KBUILD_OUTPUT := $(shell mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) \
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&& /bin/pwd)
April 16, 2005 15:20
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$(if $(KBUILD_OUTPUT),, \
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$(error failed to create output directory "$(saved-output)"))
April 16, 2005 15:20
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PHONY += $(MAKECMDGOALS) sub-make
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$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
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@:
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sub-make: FORCE
September 9, 2014 20:02
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$(Q)$(MAKE) -C $(KBUILD_OUTPUT) KBUILD_SRC=$(CURDIR) \
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-f $(CURDIR)/Makefile $(filter-out _all sub-make,$(MAKECMDGOALS))
April 16, 2005 15:20
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# Leave processing to above invocation of make
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skip-makefile := 1
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endif # ifneq ($(KBUILD_OUTPUT),)
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endif # ifeq ($(KBUILD_SRC),)
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# We process the rest of the Makefile if this is the final invocation of make
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ifeq ($(skip-makefile),)
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# Do not print "Entering directory ...",
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# but we want to display it when entering to the output directory
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# so that IDEs/editors are able to understand relative filenames.
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MAKEFLAGS += --no-print-directory
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# Call a source code checker (by default, "sparse") as part of the
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# C compilation.
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#
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# Use 'make C=1' to enable checking of only re-compiled files.
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# Use 'make C=2' to enable checking of *all* source files, regardless
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# of whether they are re-compiled or not.
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#
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# See the file "Documentation/sparse.txt" for more details, including
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# where to get the "sparse" utility.
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ifeq ("$(origin C)", "command line")
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KBUILD_CHECKSRC = $(C)
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endif
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ifndef KBUILD_CHECKSRC
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KBUILD_CHECKSRC = 0
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endif
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# Use make M=dir to specify directory of external module to build
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# Old syntax make ... SUBDIRS=$PWD is still supported
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# Setting the environment variable KBUILD_EXTMOD take precedence
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ifdef SUBDIRS
183
KBUILD_EXTMOD ?= $(SUBDIRS)
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endif
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ifeq ("$(origin M)", "command line")
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KBUILD_EXTMOD := $(M)
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endif
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April 16, 2005 15:20
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# If building an external module we do not care about the all: rule
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# but instead _all depend on modules
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PHONY += all
April 16, 2005 15:20
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ifeq ($(KBUILD_EXTMOD),)
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_all: all
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else
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_all: modules
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endif
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ifeq ($(KBUILD_SRC),)
200
# building in the source tree
201
srctree := .
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else
203
ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
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# building in a subdirectory of the source tree
205
srctree := ..
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else
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srctree := $(KBUILD_SRC)
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endif
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endif
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objtree := .
April 16, 2005 15:20
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src := $(srctree)
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obj := $(objtree)
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VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
April 16, 2005 15:20
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export srctree objtree VPATH
April 16, 2005 15:20
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# SUBARCH tells the usermode build what the underlying arch is. That is set
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# first, and if a usermode build is happening, the "ARCH=um" on the command
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# 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
April 16, 2005 15:20
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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/ \
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-e s/sun4u/sparc64/ \
April 16, 2005 15:20
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-e s/arm.*/arm/ -e s/sa110/arm/ \
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-e s/s390x/s390/ -e s/parisc64/parisc/ \
November 2, 2007 12:22
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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/ )
April 16, 2005 15:20
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# Cross compiling and selecting different set of gcc/bin-utils
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# ---------------------------------------------------------------------------
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#
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# When performing cross compilation for other architectures ARCH shall be set
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# to the target architecture. (See arch/* for the possibilities).
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# ARCH can be set during invocation of make:
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# make ARCH=ia64
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# Another way is to have ARCH set in the environment.
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# The default ARCH is the host where make is executed.
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# CROSS_COMPILE specify the prefix used for all executables used
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# during compilation. Only gcc and related bin-utils executables
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# are prefixed with $(CROSS_COMPILE).
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# CROSS_COMPILE can be set on the command line
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# make CROSS_COMPILE=ia64-linux-
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# Alternatively CROSS_COMPILE can be set in the environment.
December 21, 2009 16:24
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# A third alternative is to store a setting in .config so that plain
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# "make" in the configured kernel build directory always uses that.
April 16, 2005 15:20
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# Default value for CROSS_COMPILE is not to prefix executables
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# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
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ARCH ?= $(SUBARCH)
December 21, 2009 16:24
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CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
April 16, 2005 15:20
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# Architecture as present in compile.h
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UTS_MACHINE := $(ARCH)
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SRCARCH := $(ARCH)
April 16, 2005 15:20
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November 12, 2007 20:14
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# Additional ARCH settings for x86
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ifeq ($(ARCH),i386)
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SRCARCH := x86
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endif
262
ifeq ($(ARCH),x86_64)
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SRCARCH := x86
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endif
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December 2, 2008 23:17
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# Additional ARCH settings for sparc
October 25, 2010 05:48
267
ifeq ($(ARCH),sparc32)
268
SRCARCH := sparc
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endif
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ifeq ($(ARCH),sparc64)
December 2, 2008 23:17
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SRCARCH := sparc
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endif
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# Additional ARCH settings for sh
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ifeq ($(ARCH),sh64)
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SRCARCH := sh
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endif
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# Additional ARCH settings for tile
280
ifeq ($(ARCH),tilepro)
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SRCARCH := tile
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endif
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ifeq ($(ARCH),tilegx)
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SRCARCH := tile
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endif
286
December 2, 2008 23:17
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# Where to locate arch specific headers
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hdr-arch := $(SRCARCH)
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KCONFIG_CONFIG ?= .config
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export KCONFIG_CONFIG
292
April 16, 2005 15:20
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# SHELL used by kbuild
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CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
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else if [ -x /bin/bash ]; then echo /bin/bash; \
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else echo sh; fi ; fi)
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June 25, 2006 00:07
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HOSTCC = gcc
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HOSTCXX = g++
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HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89
June 25, 2006 00:07
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HOSTCXXFLAGS = -O2
April 16, 2005 15:20
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303
ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
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HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \
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-Wno-missing-field-initializers -fno-delete-null-pointer-checks
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endif
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June 25, 2006 00:07
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# Decide whether to build built-in, modular, or both.
309
# Normally, just do built-in.
April 16, 2005 15:20
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311
KBUILD_MODULES :=
312
KBUILD_BUILTIN := 1
313
314
# If we have only "make modules", don't compile built-in objects.
315
# When we're building modules with modversions, we need to consider
316
# the built-in objects during the descend as well, in order to
317
# make sure the checksums are up to date before we record them.
April 16, 2005 15:20
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319
ifeq ($(MAKECMDGOALS),modules)
320
KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
321
endif
322
323
# If we have "make <whatever> modules", compile modules
324
# in addition to whatever we do anyway.
325
# Just "make" or "make all" shall build modules as well
April 16, 2005 15:20
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327
ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
328
KBUILD_MODULES := 1
329
endif
330
331
ifeq ($(MAKECMDGOALS),)
332
KBUILD_MODULES := 1
333
endif
334
335
export KBUILD_MODULES KBUILD_BUILTIN
April 16, 2005 15:20
336
export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
337
338
# We need some generic definitions (do not try to remake the file).
339
scripts/Kbuild.include: ;
340
include scripts/Kbuild.include
April 16, 2005 15:20
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342
# Make variables (CC, etc...)
343
AS = $(CROSS_COMPILE)as
344
LD = $(CROSS_COMPILE)ld
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CC = $(CROSS_COMPILE)gcc
346
CPP = $(CC) -E
347
AR = $(CROSS_COMPILE)ar
348
NM = $(CROSS_COMPILE)nm
349
STRIP = $(CROSS_COMPILE)strip
350
OBJCOPY = $(CROSS_COMPILE)objcopy
351
OBJDUMP = $(CROSS_COMPILE)objdump
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AWK = awk
353
GENKSYMS = scripts/genksyms/genksyms
354
INSTALLKERNEL := installkernel
April 16, 2005 15:20
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DEPMOD = /sbin/depmod
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PERL = perl
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PYTHON = python
April 16, 2005 15:20
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CHECK = sparse
359
360
CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
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-Wbitwise -Wno-return-void $(CF)
362
CFLAGS_MODULE =
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AFLAGS_MODULE =
364
LDFLAGS_MODULE =
April 16, 2005 15:20
365
CFLAGS_KERNEL =
366
AFLAGS_KERNEL =
367
CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
March 22, 2016 14:27
368
CFLAGS_KCOV = -fsanitize-coverage=trace-pc
April 16, 2005 15:20
369
370
371
# Use USERINCLUDE when you must reference the UAPI directories only.
372
USERINCLUDE := \
373
-I$(srctree)/arch/$(hdr-arch)/include/uapi \
374
-Iarch/$(hdr-arch)/include/generated/uapi \
375
-I$(srctree)/include/uapi \
376
-Iinclude/generated/uapi \
377
-include $(srctree)/include/linux/kconfig.h
378
April 16, 2005 15:20
379
# Use LINUXINCLUDE when you must reference the include/ directory.
380
# Needed to be compatible with the O= option
381
LINUXINCLUDE := \
382
-I$(srctree)/arch/$(hdr-arch)/include \
383
-Iarch/$(hdr-arch)/include/generated/uapi \
384
-Iarch/$(hdr-arch)/include/generated \
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$(if $(KBUILD_SRC), -I$(srctree)/include) \
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-Iinclude \
387
$(USERINCLUDE)
April 16, 2005 15:20
388
November 21, 2008 21:50
389
KBUILD_CPPFLAGS := -D__KERNEL__
April 16, 2005 15:20
390
391
KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
392
-fno-strict-aliasing -fno-common \
393
-Werror-implicit-function-declaration \
394
-Wno-format-security \
395
-std=gnu89
396
397
KBUILD_AFLAGS_KERNEL :=
398
KBUILD_CFLAGS_KERNEL :=
399
KBUILD_AFLAGS := -D__ASSEMBLY__
400
KBUILD_AFLAGS_MODULE := -DMODULE
401
KBUILD_CFLAGS_MODULE := -DMODULE
402
KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
April 16, 2005 15:20
403
June 8, 2006 22:12
404
# Read KERNELRELEASE from include/config/kernel.release (if it exists)
405
KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
406
KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
407
June 25, 2006 00:07
408
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
409
export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
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export CPP AR NM STRIP OBJCOPY OBJDUMP
411
export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE
June 25, 2006 00:07
412
export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
April 16, 2005 15:20
413
414
export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
March 22, 2016 14:27
415
export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KCOV CFLAGS_KASAN CFLAGS_UBSAN
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export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
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export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
418
export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
419
export KBUILD_ARFLAGS
April 16, 2005 15:20
420
421
# When compiling out-of-tree modules, put MODVERDIR in the module
422
# tree rather than in the kernel tree. The kernel tree might
423
# even be read-only.
424
export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
425
426
# Files to ignore in find ... statements
427
February 6, 2014 07:51
428
export RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o \
429
-name CVS -o -name .pc -o -name .hg -o -name .git \) \
430
-prune -o
February 16, 2012 22:49
431
export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
432
--exclude CVS --exclude .pc --exclude .hg --exclude .git
April 16, 2005 15:20
433
434
# ===========================================================================
435
# Rules shared between *config targets and build targets
436
437
# Basic helpers built in scripts/
438
PHONY += scripts_basic
April 16, 2005 15:20
439
scripts_basic:
440
$(Q)$(MAKE) $(build)=scripts/basic
441
$(Q)rm -f .tmp_quiet_recordmcount
April 16, 2005 15:20
442
443
# To avoid any implicit rule to kick in, define an empty command.
444
scripts/basic/%: scripts_basic ;
445
446
PHONY += outputmakefile
447
# outputmakefile generates a Makefile in the output directory, if using a
448
# separate output directory. This allows convenient use of make in the
449
# output directory.
April 16, 2005 15:20
450
outputmakefile:
451
ifneq ($(KBUILD_SRC),)
452
$(Q)ln -fsn $(srctree) source
453
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
454
$(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
455
endif
April 16, 2005 15:20
456
April 27, 2011 22:29
457
# Support for using generic headers in asm-generic
458
PHONY += asm-generic
459
asm-generic:
460
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
461
src=asm obj=arch/$(SRCARCH)/include/generated/asm
462
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
463
src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
April 27, 2011 22:29
464
April 16, 2005 15:20
465
# To make sure we do not include .config for any of the *config targets
466
# catch them early, and hand them over to scripts/kconfig/Makefile
467
# It is allowed to specify more targets when calling make, including
468
# mixing *config targets and build targets.
June 25, 2006 00:07
469
# For example 'make oldconfig all'.
April 16, 2005 15:20
470
# Detect when mixed targets is specified, and make a second invocation
471
# of make so .config is not included in this case either (for *config).
472
473
version_h := include/generated/uapi/linux/version.h
474
old_version_h := include/linux/version.h
October 2, 2012 18:01
475
476
no-dot-config-targets := clean mrproper distclean \
477
cscope gtags TAGS tags help% %docs check% coccicheck \
October 2, 2012 18:01
478
$(version_h) headers_% archheaders archscripts \
479
kernelversion %src-pkg
April 16, 2005 15:20
480
481
config-targets := 0
482
mixed-targets := 0
483
dot-config := 1
484
485
ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
486
ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
487
dot-config := 0
488
endif
489
endif
490
491
ifeq ($(KBUILD_EXTMOD),)
492
ifneq ($(filter config %config,$(MAKECMDGOALS)),)
493
config-targets := 1
494
ifneq ($(words $(MAKECMDGOALS)),1)
April 16, 2005 15:20
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mixed-targets := 1
496
endif
497
endif
498
endif
499
# install and module_install need also be processed one by one
500
ifneq ($(filter install,$(MAKECMDGOALS)),)
501
ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
502
mixed-targets := 1
503
endif
504
endif
April 16, 2005 15:20
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506
ifeq ($(mixed-targets),1)
507
# ===========================================================================
508
# We're called with mixed targets (*config and build targets).
509
# Handle them one by one.
510
511
PHONY += $(MAKECMDGOALS) __build_one_by_one
512
513
$(filter-out __build_one_by_one, $(MAKECMDGOALS)): __build_one_by_one
514
@:
515
516
__build_one_by_one:
517
$(Q)set -e; \
518
for i in $(MAKECMDGOALS); do \
519
$(MAKE) -f $(srctree)/Makefile $$i; \
520
done
April 16, 2005 15:20
521
522
else
523
ifeq ($(config-targets),1)
524
# ===========================================================================
525
# *config targets only - make sure prerequisites are updated, and descend
526
# in scripts/kconfig to make the *config target
527
528
# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
529
# KBUILD_DEFCONFIG may point out an alternative default configuration
530
# used for 'make defconfig'
531
include arch/$(SRCARCH)/Makefile
532
export KBUILD_DEFCONFIG KBUILD_KCONFIG
April 16, 2005 15:20
533
December 13, 2008 23:00
534
config: scripts_basic outputmakefile FORCE
535
$(Q)$(MAKE) $(build)=scripts/kconfig $@
536
537
%config: scripts_basic outputmakefile FORCE
April 16, 2005 15:20
538
$(Q)$(MAKE) $(build)=scripts/kconfig $@
539
540
else
541
# ===========================================================================
542
# Build targets only - this includes vmlinux, arch specific targets, clean
543
# targets and others. In general all targets except *config targets.
544
545
ifeq ($(KBUILD_EXTMOD),)
546
# Additional helpers built in scripts/
547
# Carefully list dependencies so we do not try to build scripts twice
June 25, 2006 00:07
548
# in parallel
549
PHONY += scripts
550
scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
551
asm-generic
April 16, 2005 15:20
552
$(Q)$(MAKE) $(build)=$(@)
553
554
# Objects we will link into vmlinux / subdirs we need to visit
555
init-y := init/
556
drivers-y := drivers/ sound/ firmware/
April 16, 2005 15:20
557
net-y := net/
558
libs-y := lib/
559
core-y := usr/
560
virt-y := virt/
April 16, 2005 15:20
561
endif # KBUILD_EXTMOD
562
563
ifeq ($(dot-config),1)
564
# Read in config
565
-include include/config/auto.conf
April 16, 2005 15:20
566
567
ifeq ($(KBUILD_EXTMOD),)
April 16, 2005 15:20
568
# Read in dependencies to all Kconfig* files, make sure to run
569
# oldconfig if changes are detected.
570
-include include/config/auto.conf.cmd
April 16, 2005 15:20
571
572
# To avoid any implicit rule to kick in, define an empty command
573
$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
April 16, 2005 15:20
574
575
# If .config is newer than include/config/auto.conf, someone tinkered
576
# with it and forgot to run make oldconfig.
June 25, 2006 00:07
577
# if auto.conf.cmd is missing then we are probably in a cleaned tree so
578
# we execute the config step to be sure to catch updated Kconfig files
December 7, 2009 16:38
579
include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
April 16, 2005 15:20
580
$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
581
else
582
# external modules needs include/generated/autoconf.h and include/config/auto.conf
583
# but do not care if they are up-to-date. Use auto.conf to trigger the test
584
PHONY += include/config/auto.conf
585
586
include/config/auto.conf:
587
$(Q)test -e include/generated/autoconf.h -a -e $@ || ( \
July 7, 2012 23:04
588
echo >&2; \
589
echo >&2 " ERROR: Kernel configuration is invalid."; \
590
echo >&2 " include/generated/autoconf.h or $@ are missing.";\
591
echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
592
echo >&2 ; \
593
/bin/false)
594
595
endif # KBUILD_EXTMOD
596
April 16, 2005 15:20
597
else
598
# Dummy target needed, because used as prerequisite
599
include/config/auto.conf: ;
600
endif # $(dot-config)
April 16, 2005 15:20
601
602
# The all: target is the default when no target is given on the
603
# command line.
604
# This allow a user to issue only 'make' to build a kernel including modules
June 3, 2010 10:54
605
# Defaults to vmlinux, but the arch makefile usually adds further targets
April 16, 2005 15:20
606
all: vmlinux
607
608
# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
609
# values of the respective KBUILD_* variables
610
ARCH_CPPFLAGS :=
611
ARCH_AFLAGS :=
612
ARCH_CFLAGS :=
613
include arch/$(SRCARCH)/Makefile
614
615
KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
616
April 16, 2005 15:20
617
ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
618
KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,)
April 16, 2005 15:20
619
else
620
KBUILD_CFLAGS += -O2
April 16, 2005 15:20
621
endif
622
623
# Tell gcc to never replace conditional load with a non-conditional one
624
KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
625
March 28, 2012 11:51
626
ifdef CONFIG_READABLE_ASM
627
# Disable optimizations that make assembler listings hard to read.
628
# reorder blocks reorders the control in the function
629
# ipa clone creates specialized cloned functions
630
# partial inlining inlines only parts of functions
631
KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \
632
$(call cc-option,-fno-ipa-cp-clone,) \
633
$(call cc-option,-fno-partial-inlining)
634
endif
635
636
ifneq ($(CONFIG_FRAME_WARN),0)
637
KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
638
endif
639
640
# Handle stack protector mode.
641
#
642
# Since kbuild can potentially perform two passes (first with the old
643
# .config values and then with updated .config values), we cannot error out
644
# if a desired compiler option is unsupported. If we were to error, kbuild
645
# could never get to the second pass and actually notice that we changed
646
# the option to something that was supported.
647
#
648
# Additionally, we don't want to fallback and/or silently change which compiler
649
# flags will be used, since that leads to producing kernels with different
650
# security feature characteristics depending on the compiler used. ("But I
651
# selected CC_STACKPROTECTOR_STRONG! Why did it build with _REGULAR?!")
652
#
653
# The middle ground is to warn here so that the failed option is obvious, but
654
# to let the build fail with bad compiler flags so that we can't produce a
655
# kernel when there is a CONFIG and compiler mismatch.
656
#
657
ifdef CONFIG_CC_STACKPROTECTOR_REGULAR
658
stackp-flag := -fstack-protector
659
ifeq ($(call cc-option, $(stackp-flag)),)
660
$(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \
661
-fstack-protector not supported by compiler)
662
endif
663
else
664
ifdef CONFIG_CC_STACKPROTECTOR_STRONG
665
stackp-flag := -fstack-protector-strong
666
ifeq ($(call cc-option, $(stackp-flag)),)
667
$(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \
668
-fstack-protector-strong not supported by compiler)
669
endif
670
else
671
# Force off for distro compilers that enable stack protector by default.
672
stackp-flag := $(call cc-option, -fno-stack-protector)
February 9, 2009 22:17
673
endif
674
endif
675
KBUILD_CFLAGS += $(stackp-flag)
676
March 22, 2016 14:27
677
ifdef CONFIG_KCOV
678
ifeq ($(call cc-option, $(CFLAGS_KCOV)),)
679
$(warning Cannot use CONFIG_KCOV: \
680
-fsanitize-coverage=trace-pc is not supported by compiler)
681
CFLAGS_KCOV =
682
endif
683
endif
684
August 19, 2015 17:36
685
ifeq ($(cc-name),clang)
686
KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
687
KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
688
KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
689
KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
690
KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
691
# Quiet clang warning: comparison of unsigned expression < 0 is always false
692
KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
693
# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
694
# source of a reference will be _MergedGlobals and not on of the whitelisted names.
695
# See modpost pattern 2
696
KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
697
KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
698
else
699
700
# This warning generated too much noise in a regular build.
701
# Use make W=1 to enable this warning (see scripts/Makefile.build)
702
KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
703
endif
704
April 16, 2005 15:20
705
ifdef CONFIG_FRAME_POINTER
706
KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
April 16, 2005 15:20
707
else
708
# Some targets (ARM with Thumb2, for example), can't be built with frame
709
# pointers. For those, we don't have FUNCTION_TRACER automatically
710
# select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is
711
# incompatible with -fomit-frame-pointer with current GCC, so we don't use
712
# -fomit-frame-pointer with FUNCTION_TRACER.
713
ifndef CONFIG_FUNCTION_TRACER
714
KBUILD_CFLAGS += -fomit-frame-pointer
April 16, 2005 15:20
715
endif
716
endif
April 16, 2005 15:20
717
718
KBUILD_CFLAGS += $(call cc-option, -fno-var-tracking-assignments)
719
April 16, 2005 15:20
720
ifdef CONFIG_DEBUG_INFO
721
ifdef CONFIG_DEBUG_INFO_SPLIT
722
KBUILD_CFLAGS += $(call cc-option, -gsplit-dwarf, -g)
723
else
724
KBUILD_CFLAGS += -g
725
endif
726
KBUILD_AFLAGS += -Wa,-gdwarf-2
April 16, 2005 15:20
727
endif
728
ifdef CONFIG_DEBUG_INFO_DWARF4
729
KBUILD_CFLAGS += $(call cc-option, -gdwarf-4,)
730
endif
April 16, 2005 15:20
731
732
ifdef CONFIG_DEBUG_INFO_REDUCED
733
KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
734
$(call cc-option,-fno-var-tracking)
735
endif
736
737
ifdef CONFIG_FUNCTION_TRACER
738
ifndef CC_FLAGS_FTRACE
739
CC_FLAGS_FTRACE := -pg
740
endif
741
export CC_FLAGS_FTRACE
742
ifdef CONFIG_HAVE_FENTRY
743
CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
744
endif
745
KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY)
746
KBUILD_AFLAGS += $(CC_USING_FENTRY)
747
ifdef CONFIG_DYNAMIC_FTRACE
748
ifdef CONFIG_HAVE_C_RECORDMCOUNT
749
BUILD_C_RECORDMCOUNT := y
750
export BUILD_C_RECORDMCOUNT
751
endif
752
endif
753
endif
754
755
# We trigger additional mismatches with less inlining
756
ifdef CONFIG_DEBUG_SECTION_MISMATCH
757
KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
758
endif
759
760
# arch Makefile may override CC so keep this after arch Makefile is included
761
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
762
CHECKFLAGS += $(NOSTDINC_FLAGS)
763
April 16, 2005 15:20
764
# warn about C99 declaration after statement
765
KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
April 16, 2005 15:20
766
June 25, 2006 00:07
767
# disable pointer signed / unsigned warnings in gcc 4.0
768
KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
April 16, 2005 15:20
769
770
# disable invalid "can't wrap" optimizations for signed / pointers
771
KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
772
773
# conserve stack if available
774
KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
775
776
# disallow errors like 'EXPORT_GPL(foo);' with missing header
777
KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
778
779
# require functions to have arguments in prototypes, not empty 'int foo()'
780
KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
781
782
# Prohibit date/time macros, which would make the build non-deterministic
783
KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
784
785
# enforce correct pointer usage
786
KBUILD_CFLAGS += $(call cc-option,-Werror=incompatible-pointer-types)
787
788
# use the deterministic mode of AR if available
789
KBUILD_ARFLAGS := $(call ar-option,D)
790
September 17, 2010 11:09
791
# check for 'asm goto'
792
ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
793
KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
794
KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO
September 17, 2010 11:09
795
endif
796
797
include scripts/Makefile.kasan
798
include scripts/Makefile.extrawarn
799
include scripts/Makefile.ubsan
800
801
# Add any arch overrides and user supplied CPPFLAGS, AFLAGS and CFLAGS as the
802
# last assignments
803
KBUILD_CPPFLAGS += $(ARCH_CPPFLAGS) $(KCPPFLAGS)
804
KBUILD_AFLAGS += $(ARCH_AFLAGS) $(KAFLAGS)
805
KBUILD_CFLAGS += $(ARCH_CFLAGS) $(KCFLAGS)
806
July 19, 2007 01:48
807
# Use --build-id when available.
808
LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
September 19, 2009 10:14
809
$(call cc-ldoption, -Wl$(comma)--build-id,))
810
KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
July 19, 2007 01:48
811
LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
812
813
ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
814
LDFLAGS_vmlinux += $(call ld-option, -X,)
815
endif
816
April 16, 2005 15:20
817
# Default kernel image to build when no specific target is given.
June 25, 2006 00:07
818
# KBUILD_IMAGE may be overruled on the command line or
April 16, 2005 15:20
819
# set in the environment
820
# Also any assignments in arch/$(ARCH)/Makefile take precedence over
821
# this default value
822
export KBUILD_IMAGE ?= vmlinux
823
824
#
825
# INSTALL_PATH specifies where to place the updated kernel and system map
826
# images. Default is /boot, but you can set it to other values
827
export INSTALL_PATH ?= /boot
828
December 1, 2013 23:56
829
#
830
# INSTALL_DTBS_PATH specifies a prefix for relocations required by build roots.
831
# Like INSTALL_MOD_PATH, it isn't defined in the Makefile, but can be passed as
832
# an argument if needed. Otherwise it defaults to the kernel install path
833
#
834
export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE)
835
April 16, 2005 15:20
836
#
837
# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
838
# relocations required by build roots. This is not defined in the
June 25, 2006 00:07
839
# makefile but the argument can be passed to make if needed.
April 16, 2005 15:20
840
#
841
842
MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
April 16, 2005 15:20
843
export MODLIB
844
845
#
846
# INSTALL_MOD_STRIP, if defined, will cause modules to be
847
# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
848
# the default option --strip-debug will be used. Otherwise,
849
# INSTALL_MOD_STRIP value will be used as the options to the strip command.
850
851
ifdef INSTALL_MOD_STRIP
852
ifeq ($(INSTALL_MOD_STRIP),1)
853
mod_strip_cmd = $(STRIP) --strip-debug
854
else
855
mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
856
endif # INSTALL_MOD_STRIP=1
857
else
858
mod_strip_cmd = true
859
endif # INSTALL_MOD_STRIP
860
export mod_strip_cmd
861
862
# CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed
863
# after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP
864
# or CONFIG_MODULE_COMPRESS_XZ.
865
866
mod_compress_cmd = true
867
ifdef CONFIG_MODULE_COMPRESS
868
ifdef CONFIG_MODULE_COMPRESS_GZIP
869
mod_compress_cmd = gzip -n -f
870
endif # CONFIG_MODULE_COMPRESS_GZIP
871
ifdef CONFIG_MODULE_COMPRESS_XZ
872
mod_compress_cmd = xz -f
873
endif # CONFIG_MODULE_COMPRESS_XZ
874
endif # CONFIG_MODULE_COMPRESS
875
export mod_compress_cmd
876
877
# Select initial ramdisk compression format, default is gzip(1).
878
# This shall be used by the dracut(8) tool while creating an initramfs image.
879
#
December 18, 2013 17:08
880
INITRD_COMPRESS-y := gzip
881
INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2
882
INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma
883
INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz
884
INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo
885
INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4
886
# do not export INITRD_COMPRESS, since we didn't actually
887
# choose a sane default compression above.
888
# export INITRD_COMPRESS := $(INITRD_COMPRESS-y)
April 16, 2005 15:20
889
890
ifdef CONFIG_MODULE_SIG_ALL
891
$(eval $(call config_filename,MODULE_SIG_KEY))
892
893
mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509
894
else
895
mod_sign_cmd = true
896
endif
897
export mod_sign_cmd
898
899
April 16, 2005 15:20
900
ifeq ($(KBUILD_EXTMOD),)
901
core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
April 16, 2005 15:20
902
903
vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
904
$(core-y) $(core-m) $(drivers-y) $(drivers-m) \
905
$(net-y) $(net-m) $(libs-y) $(libs-m) $(virt-y)))
April 16, 2005 15:20
906
907
vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
908
$(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-))))
April 16, 2005 15:20
909
910
init-y := $(patsubst %/, %/built-in.o, $(init-y))
911
core-y := $(patsubst %/, %/built-in.o, $(core-y))
912
drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
913
net-y := $(patsubst %/, %/built-in.o, $(net-y))
914
libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
915
libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
916
libs-y := $(libs-y1) $(libs-y2)
917
virt-y := $(patsubst %/, %/built-in.o, $(virt-y))
April 16, 2005 15:20
918
919
# Externally visible symbols (used by link-vmlinux.sh)
920
export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
921
export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) $(virt-y)
922
export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
923
export LDFLAGS_vmlinux
924
# used by scripts/pacmage/Makefile
925
export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools)
926
927
vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)
April 16, 2005 15:20
928
929
# Final link of vmlinux
930
cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux)
931
quiet_cmd_link-vmlinux = LINK $@
April 16, 2005 15:20
932
933
# Include targets which we want to
934
# execute if the rest of the kernel build went well.
935
vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE
936
ifdef CONFIG_HEADERS_CHECK
937
$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
October 18, 2007 23:41
938
endif
939
ifdef CONFIG_SAMPLES
940
$(Q)$(MAKE) $(build)=samples
August 12, 2008 15:09
941
endif
942
ifdef CONFIG_BUILD_DOCSRC
943
$(Q)$(MAKE) $(build)=Documentation
February 17, 2015 13:46
944
endif
945
ifdef CONFIG_GDB_SCRIPTS
946
$(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py
947
endif
948
+$(call if_changed,link-vmlinux)
949
950
# The actual objects are generated when descending,
April 16, 2005 15:20
951
# make sure no implicit rule kicks in
952
$(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
April 16, 2005 15:20
953
954
# Handle descending into subdirectories listed in $(vmlinux-dirs)
955
# Preset locale variables to speed up the build process. Limit locale
956
# tweaks to this spot to avoid wrong language settings when running
957
# make menuconfig etc.
958
# Error messages still appears in the original language
959
960
PHONY += $(vmlinux-dirs)
961
$(vmlinux-dirs): prepare scripts
April 16, 2005 15:20
962
$(Q)$(MAKE) $(build)=$@
963
964
define filechk_kernel.release
965
echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
966
endef
967
June 28, 2013 11:27
968
# Store (new) KERNELRELEASE string in include/config/kernel.release
June 8, 2006 22:12
969
include/config/kernel.release: include/config/auto.conf FORCE
970
$(call filechk,kernel.release)
971
972
April 16, 2005 15:20
973
# Things we need to do before we recursively start building the kernel
974
# or the modules are listed in "prepare".
975
# A multi level approach is used. prepareN is processed before prepareN-1.
976
# archprepare is used in arch Makefiles and when processed asm symlink,
977
# version.h and scripts_basic is processed / created.
April 16, 2005 15:20
978
979
# Listed in dependency order
980
PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
981
982
# prepare3 is used to check if we are building in a separate output directory,
April 16, 2005 15:20
983
# and if so do:
984
# 1) Check that make has not been executed in the kernel src $(srctree)
June 8, 2006 22:12
985
prepare3: include/config/kernel.release
April 16, 2005 15:20
986
ifneq ($(KBUILD_SRC),)
November 6, 2008 03:31
987
@$(kecho) ' Using $(srctree) as source for kernel'
988
$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
July 7, 2012 23:04
989
echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \
990
echo >&2 " in the '$(srctree)' directory.";\
April 16, 2005 15:20
991
/bin/false; \
992
fi;
993
endif
994
995
# prepare2 creates a makefile if using a separate output directory
April 27, 2011 22:29
996
prepare2: prepare3 outputmakefile asm-generic
April 16, 2005 15:20
997
October 2, 2012 18:01
998
prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
October 18, 2009 00:00
999
include/config/auto.conf
October 19, 2007 22:20
1000
$(cmd_crmodverdir)
April 16, 2005 15:20
1001
1002
archprepare: archheaders archscripts prepare1 scripts_basic
1003
1004
prepare0: archprepare FORCE
1005
$(Q)$(MAKE) $(build)=.
1006
April 16, 2005 15:20
1007
# All the preparing..
1008
prepare: prepare0 prepare-objtool
1009
1010
ifdef CONFIG_STACK_VALIDATION
1011
has_libelf := $(shell echo "int main() {}" | $(HOSTCC) -xc -o /dev/null -lelf - &> /dev/null && echo 1 || echo 0)
1012
ifeq ($(has_libelf),1)
1013
objtool_target := tools/objtool FORCE
1014
else
1015
$(warning "Cannot use CONFIG_STACK_VALIDATION, please install libelf-dev or elfutils-libelf-devel")
1016
SKIP_STACK_VALIDATION := 1
1017
export SKIP_STACK_VALIDATION
1018
endif
1019
endif
1020
1021
PHONY += prepare-objtool
1022
prepare-objtool: $(objtool_target)
April 16, 2005 15:20
1023
1024
# Generate some files
1025
# ---------------------------------------------------------------------------
1026
1027
# KERNELRELEASE can change from a few different places, meaning version.h
1028
# needs to be updated, so this check is forced on all builds
1029
1030
uts_len := 64
July 3, 2006 23:30
1031
define filechk_utsrelease.h
1032
if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
1033
echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
1034
exit 1; \
1035
fi; \
1036
(echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
1037
endef
April 16, 2005 15:20
1038
1039
define filechk_version.h
February 16, 2012 22:49
1040
(echo \#define LINUX_VERSION_CODE $(shell \
1041
expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
July 3, 2006 23:30
1042
echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
April 16, 2005 15:20
1043
endef
1044
October 2, 2012 18:01
1045
$(version_h): $(srctree)/Makefile FORCE
April 16, 2005 15:20
1046
$(call filechk,version.h)
1047
$(Q)rm -f $(old_version_h)
April 16, 2005 15:20
1048
1049
include/generated/utsrelease.h: include/config/kernel.release FORCE
July 3, 2006 23:30
1050
$(call filechk,utsrelease.h)
1051
1052
PHONY += headerdep
1053
headerdep:
1054
$(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
1055
$(srctree)/scripts/headerdep.pl -I$(srctree)/include
1056
1057
# ---------------------------------------------------------------------------
1058
# Firmware install
1059
INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
1060
export INSTALL_FW_PATH
1061
1062
PHONY += firmware_install
1063
firmware_install: FORCE
1064
@mkdir -p $(objtree)/firmware
1065
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
1066
1067
# ---------------------------------------------------------------------------
1068
# Kernel headers
1069
1070
#Default location for installed headers
1071
export INSTALL_HDR_PATH = $(objtree)/usr
September 24, 2006 22:16
1072
1073
# If we do an all arch process set dst to asm-$(hdr-arch)
1074
hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
1075
1076
PHONY += archheaders
1077
archheaders:
1078
1079
PHONY += archscripts
1080
archscripts:
1081
1082
PHONY += __headers
October 2, 2012 18:01
1083
__headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE
1084
$(Q)$(MAKE) $(build)=scripts build_unifdef
1085
1086
PHONY += headers_install_all
1087
headers_install_all:
1088
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
September 24, 2006 22:16
1089
1090
PHONY += headers_install
1091
headers_install: __headers
1092
$(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \
1093
$(error Headers not exportable for the $(SRCARCH) architecture))
1094
$(Q)$(MAKE) $(hdr-inst)=include/uapi
1095
$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst)
1096
1097
PHONY += headers_check_all
1098
headers_check_all: headers_install_all
1099
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1100
1101
PHONY += headers_check
1102
headers_check: headers_install
1103
$(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1
1104
$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1
1105
1106
# ---------------------------------------------------------------------------
1107
# Kernel selftest
1108
1109
PHONY += kselftest
1110
kselftest:
1111
$(Q)$(MAKE) -C tools/testing/selftests run_tests
1112
October 8, 2015 02:41
1113
kselftest-clean:
1114
$(Q)$(MAKE) -C tools/testing/selftests clean
1115
January 8, 2016 15:27
1116
PHONY += kselftest-merge
1117
kselftest-merge:
1118
$(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!))
1119
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
1120
-m $(objtree)/.config \
1121
$(srctree)/tools/testing/selftests/*/config
1122
+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
1123
April 16, 2005 15:20
1124
# ---------------------------------------------------------------------------
1125
# Modules
1126
1127
ifdef CONFIG_MODULES
1128
June 25, 2006 00:07
1129
# By default, build modules as well
April 16, 2005 15:20
1130
1131
all: modules
April 16, 2005 15:20
1132
1133
# Build modules
December 7, 2007 21:04
1134
#
1135
# A module can be listed more than once in obj-m resulting in
1136
# duplicate lines in modules.order files. Those are removed
1137
# using awk while concatenating to the final file.
April 16, 2005 15:20
1138
1139
PHONY += modules
1140
modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
December 7, 2007 21:04
1141
$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
November 6, 2008 03:31
1142
@$(kecho) ' Building modules, stage 2.';
August 8, 2006 21:36
1143
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1144
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
April 16, 2005 15:20
1145
1146
modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
1147
$(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
1148
1149
%/modules.builtin: include/config/auto.conf
1150
$(Q)$(MAKE) $(modbuiltin)=$*
1151
April 16, 2005 15:20
1152
1153
# Target to prepare building external modules
1154
PHONY += modules_prepare
1155
modules_prepare: prepare scripts
April 16, 2005 15:20
1156
1157
# Target to install modules
1158
PHONY += modules_install
April 16, 2005 15:20
1159
modules_install: _modinst_ _modinst_post
1160
1161
PHONY += _modinst_
1162
_modinst_:
April 16, 2005 15:20
1163
@rm -rf $(MODLIB)/kernel
1164
@rm -f $(MODLIB)/source
1165
@mkdir -p $(MODLIB)/kernel
1166
@ln -s `cd $(srctree) && /bin/pwd` $(MODLIB)/source
April 16, 2005 15:20
1167
@if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
1168
rm -f $(MODLIB)/build ; \
1169
ln -s $(CURDIR) $(MODLIB)/build ; \
April 16, 2005 15:20
1170
fi
December 7, 2007 21:04
1171
@cp -f $(objtree)/modules.order $(MODLIB)/
December 7, 2009 16:38
1172
@cp -f $(objtree)/modules.builtin $(MODLIB)/
August 8, 2006 21:36
1173
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
April 16, 2005 15:20
1174
1175
# This depmod is only for convenience to give the initial
April 16, 2005 15:20
1176
# boot a modules.dep even before / is mounted read-write. However the
1177
# boot script depmod is the master version.
1178
PHONY += _modinst_post
1179
_modinst_post: _modinst_
1180
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
1181
$(call cmd,depmod)
April 16, 2005 15:20
1182
November 5, 2012 09:09
1183
ifeq ($(CONFIG_MODULE_SIG), y)
1184
PHONY += modules_sign
1185
modules_sign:
1186
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
1187
endif
1188
April 16, 2005 15:20
1189
else # CONFIG_MODULES
1190
1191
# Modules not configured
1192
# ---------------------------------------------------------------------------
1193
1194
modules modules_install: FORCE
July 7, 2012 23:04
1195
@echo >&2
1196
@echo >&2 "The present kernel configuration has modules disabled."
1197
@echo >&2 "Type 'make config' and enable loadable module support."
1198
@echo >&2 "Then build a kernel with module support enabled."
1199
@echo >&2
April 16, 2005 15:20
1200
@exit 1
1201
1202
endif # CONFIG_MODULES
1203
1204
###
1205
# Cleaning is done on three levels.
1206
# make clean Delete most generated files
1207
# Leave enough to build external modules
1208
# make mrproper Delete the current configuration, and all generated files
1209
# make distclean Remove editor backup files, patch leftover files and the like
1210
1211
# Directories & files removed with 'make clean'
1212
CLEAN_DIRS += $(MODVERDIR)
1213
1214
# Directories & files removed with 'make mrproper'
April 27, 2011 22:29
1215
MRPROPER_DIRS += include/config usr/include include/generated \
1216
arch/*/include/generated .tmp_objdiff
1217
MRPROPER_FILES += .config .config.old .version .old_version \
1218
Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
1219
signing_key.pem signing_key.priv signing_key.x509 \
1220
x509.genkey extra_certificates signing_key.x509.keyid \
February 17, 2015 13:46
1221
signing_key.x509.signer vmlinux-gdb.py
April 16, 2005 15:20
1222
1223
# clean - Delete most, but leave enough to build external modules
1224
#
1225
clean: rm-dirs := $(CLEAN_DIRS)
1226
clean: rm-files := $(CLEAN_FILES)
February 4, 2012 02:55
1227
clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples)
April 16, 2005 15:20
1228
1229
PHONY += $(clean-dirs) clean archclean vmlinuxclean
April 16, 2005 15:20
1230
$(clean-dirs):
1231
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1232
1233
vmlinuxclean:
1234
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
1235
1236
clean: archclean vmlinuxclean
April 16, 2005 15:20
1237
1238
# mrproper - Delete all generated files, including .config
1239
#
1240
mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1241
mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1242
mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1243
1244
PHONY += $(mrproper-dirs) mrproper archmrproper
April 16, 2005 15:20
1245
$(mrproper-dirs):
1246
$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1247
1248
mrproper: clean archmrproper $(mrproper-dirs)
1249
$(call cmd,rmdirs)
1250
$(call cmd,rmfiles)
1251
1252
# distclean
1253
#
1254
PHONY += distclean
April 16, 2005 15:20
1255
1256
distclean: mrproper
1257
@find $(srctree) $(RCS_FIND_IGNORE) \
June 25, 2006 00:07
1258
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
April 16, 2005 15:20
1259
-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1260
-o -name '.*.rej' -o -name '*%' -o -name 'core' \) \
April 16, 2005 15:20
1261
-type f -print | xargs rm -f
1262
1263
1264
# Packaging of the kernel to various formats
1265
# ---------------------------------------------------------------------------
1266
# rpm target kept for backward compatibility
1267
package-dir := scripts/package
April 16, 2005 15:20
1268
1269
%src-pkg: FORCE
1270
$(Q)$(MAKE) $(build)=$(package-dir) $@
1271
%pkg: include/config/kernel.release FORCE
March 21, 2006 07:22
1272
$(Q)$(MAKE) $(build)=$(package-dir) $@
1273
rpm: include/config/kernel.release FORCE
March 21, 2006 07:22
1274
$(Q)$(MAKE) $(build)=$(package-dir) $@
April 16, 2005 15:20
1275
1276
1277
# Brief documentation of the typical targets used
1278
# ---------------------------------------------------------------------------
1279
1280
boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1281
boards := $(sort $(notdir $(boards)))
1282
board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1283
board-dirs := $(sort $(notdir $(board-dirs:/=)))
April 16, 2005 15:20
1284
1285
help:
1286
@echo 'Cleaning targets:'
December 12, 2006 19:09
1287
@echo ' clean - Remove most generated files but keep the config and'
1288
@echo ' enough build support to build external modules'
December 12, 2006 19:09
1289
@echo ' mrproper - Remove all generated files + config + various backup files'
1290
@echo ' distclean - mrproper + remove editor backup and patch files'
April 16, 2005 15:20
1291
@echo ''
1292
@echo 'Configuration targets:'
1293
@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1294
@echo ''
1295
@echo 'Other generic targets:'
1296
@echo ' all - Build all targets marked with [*]'
1297
@echo '* vmlinux - Build the bare kernel'
1298
@echo '* modules - Build all modules'
1299
@echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1300
@echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1301
@echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
April 16, 2005 15:20
1302
@echo ' dir/ - Build all files in dir and below'
1303
@echo ' dir/file.[ois] - Build specified target only'
1304
@echo ' dir/file.lst - Build specified mixed source/assembly target only'
1305
@echo ' (requires a recent binutils and recent build (System.map))'
1306
@echo ' dir/file.ko - Build module including final link'
1307
@echo ' modules_prepare - Set up for building external modules'
April 16, 2005 15:20
1308
@echo ' tags/TAGS - Generate tags file for editors'
1309
@echo ' cscope - Generate cscope index'
1310
@echo ' gtags - Generate GNU GLOBAL index'
1311
@echo ' kernelrelease - Output the release version string (use with make -s)'
1312
@echo ' kernelversion - Output the version stored in Makefile (use with make -s)'
1313
@echo ' image_name - Output the image name (use with make -s)'
1314
@echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1315
echo ' (default: $(INSTALL_HDR_PATH))'; \
1316
echo ''
April 16, 2005 15:20
1317
@echo 'Static analysers'
1318
@echo ' checkstack - Generate a list of stack hogs'
1319
@echo ' namespacecheck - Name space analysis on compiled kernel'
1320
@echo ' versioncheck - Sanity check on version.h usage'
November 4, 2007 12:01
1321
@echo ' includecheck - Check for duplicate included header files'
1322
@echo ' export_report - List the usages of all exported symbols'
1323
@echo ' headers_check - Sanity check on exported headers'
1324
@echo ' headerdep - Detect inclusion cycles in headers'
1325
@$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
1326
@echo ''
1327
@echo 'Kernel selftest'
1328
@echo ' kselftest - Build and run kernel selftest (run as root)'
1329
@echo ' Build, install, and boot kernel before'
1330
@echo ' running kselftest on it'
October 8, 2015 02:41
1331
@echo ' kselftest-clean - Remove all generated kselftest files'
January 8, 2016 15:27
1332
@echo ' kselftest-merge - Merge all the config dependencies of kselftest to existed'
1333
@echo ' .config.'
1334
@echo ''
April 16, 2005 15:20
1335
@echo 'Kernel packaging:'
March 21, 2006 07:22
1336
@$(MAKE) $(build)=$(package-dir) help
April 16, 2005 15:20
1337
@echo ''
1338
@echo 'Documentation targets:'
1339
@$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1340
@echo ''
1341
@echo 'Architecture specific targets ($(SRCARCH)):'
April 16, 2005 15:20
1342
@$(if $(archhelp),$(archhelp),\
1343
echo ' No architecture specific help defined for $(SRCARCH)')
April 16, 2005 15:20
1344
@echo ''
1345
@$(if $(boards), \
1346
$(foreach b, $(boards), \
1347
printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1348
echo '')
1349
@$(if $(board-dirs), \
1350
$(foreach b, $(board-dirs), \
1351
printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1352
printf " %-16s - Show all of the above\\n" help-boards; \
1353
echo '')
April 16, 2005 15:20
1354
1355
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1356
@echo ' make V=2 [targets] 2 => give reason for rebuild of target'
April 16, 2005 15:20
1357
@echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1358
@echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1359
@echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1360
@echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1361
@echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1362
@echo ' 1: warnings which may be relevant and do not occur too often'
1363
@echo ' 2: warnings which occur quite often but may still be relevant'
1364
@echo ' 3: more obscure warnings, can most likely be ignored'
1365
@echo ' Multiple levels can be combined with W=12 or W=123'
April 16, 2005 15:20
1366
@echo ''
1367
@echo 'Execute "make" or "make all" to build all targets marked with [*] '
1368
@echo 'For further info see the ./README file'
1369
1370
1371
help-board-dirs := $(addprefix help-,$(board-dirs))
1372
1373
help-boards: $(help-board-dirs)
1374
1375
boards-per-dir = $(sort $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)))
1376
1377
$(help-board-dirs): help-%:
1378
@echo 'Architecture specific targets ($(SRCARCH) $*):'
1379
@$(if $(boards-per-dir), \
1380
$(foreach b, $(boards-per-dir), \
1381
printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1382
echo '')
1383
1384
April 16, 2005 15:20
1385
# Documentation targets
1386
# ---------------------------------------------------------------------------
1387
%docs: scripts_basic FORCE
September 28, 2015 01:09
1388
$(Q)$(MAKE) $(build)=scripts build_docproc build_check-lc_ctype
April 16, 2005 15:20
1389
$(Q)$(MAKE) $(build)=Documentation/DocBook $@
1390
1391
else # KBUILD_EXTMOD
1392
1393
###
1394
# External module support.
1395
# When building external modules the kernel used as basis is considered
1396
# read-only, and no consistency checks are made and the make
1397
# system is not used on the basis kernel. If updates are required
1398
# in the basis kernel ordinary make commands (without M=...) must
1399
# be used.
1400
#
1401
# The following are the only valid targets when building external
1402
# modules.
1403
# make M=dir clean Delete all automatically generated files
1404
# make M=dir modules Make all modules in specified dir
1405
# make M=dir Same as 'make M=dir modules'
1406
# make M=dir modules_install
June 25, 2006 00:07
1407
# Install the modules built in the module directory
April 16, 2005 15:20
1408
# Assumes install directory is already created
1409
1410
# We are always building modules
1411
KBUILD_MODULES := 1
1412
PHONY += crmodverdir
April 16, 2005 15:20
1413
crmodverdir:
October 19, 2007 22:20
1414
$(cmd_crmodverdir)
April 16, 2005 15:20
1415
1416
PHONY += $(objtree)/Module.symvers
April 16, 2005 15:20
1417
$(objtree)/Module.symvers:
1418
@test -e $(objtree)/Module.symvers || ( \
1419
echo; \
1420
echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1421
echo " is missing; modules will have no dependencies and modversions."; \
1422
echo )
1423
1424
module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1425
PHONY += $(module-dirs) modules
April 16, 2005 15:20
1426
$(module-dirs): crmodverdir $(objtree)/Module.symvers
1427
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1428
1429
modules: $(module-dirs)
November 6, 2008 03:31
1430
@$(kecho) ' Building modules, stage 2.';
August 8, 2006 21:36
1431
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
April 16, 2005 15:20
1432
1433
PHONY += modules_install
1434
modules_install: _emodinst_ _emodinst_post
February 14, 2006 15:58
1435
1436
install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1437
PHONY += _emodinst_
1438
_emodinst_:
1439
$(Q)mkdir -p $(MODLIB)/$(install-dir)
August 8, 2006 21:36
1440
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
April 16, 2005 15:20
1441
1442
PHONY += _emodinst_post
1443
_emodinst_post: _emodinst_
1444
$(call cmd,depmod)
1445
April 16, 2005 15:20
1446
clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1447
1448
PHONY += $(clean-dirs) clean
April 16, 2005 15:20
1449
$(clean-dirs):
1450
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1451
1452
clean: rm-dirs := $(MODVERDIR)
1453
clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
April 16, 2005 15:20
1454
1455
help:
1456
@echo ' Building external modules.'
1457
@echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1458
@echo ''
1459
@echo ' modules - default target, build the module(s)'
1460
@echo ' modules_install - install the module'
1461
@echo ' clean - remove generated files in module directory only'
1462
@echo ''
1463
1464
# Dummies...
1465
PHONY += prepare scripts
1466
prepare: ;
1467
scripts: ;
April 16, 2005 15:20
1468
endif # KBUILD_EXTMOD
1469
1470
clean: $(clean-dirs)
1471
$(call cmd,rmdirs)
1472
$(call cmd,rmfiles)
1473
@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1474
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1475
-o -name '*.ko.*' \
1476
-o -name '*.dwo' \
1477
-o -name '*.su' \
1478
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1479
-o -name '*.symtypes' -o -name 'modules.order' \
1480
-o -name modules.builtin -o -name '.tmp_*.o.*' \
1481
-o -name '*.gcno' \) -type f -print | xargs rm -f
1482
April 16, 2005 15:20
1483
# Generate tags for editors
1484
# ---------------------------------------------------------------------------
1485
quiet_cmd_tags = GEN $@
1486
cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
April 16, 2005 15:20
1487
1488
tags TAGS cscope gtags: FORCE
April 16, 2005 15:20
1489
$(call cmd,tags)
1490
1491
# Scripts to check various things for consistency
1492
# ---------------------------------------------------------------------------
1493
April 26, 2011 17:15
1494
PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1495
April 16, 2005 15:20
1496
includecheck:
1497
find $(srctree)/* $(RCS_FIND_IGNORE) \
April 16, 2005 15:20
1498
-name '*.[hcS]' -type f -print | sort \
1499
| xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
April 16, 2005 15:20
1500
1501
versioncheck:
1502
find $(srctree)/* $(RCS_FIND_IGNORE) \
April 16, 2005 15:20
1503
-name '*.[hcS]' -type f -print | sort \
1504
| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
April 16, 2005 15:20
1505
1506
coccicheck:
1507
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1508
April 16, 2005 15:20
1509
namespacecheck:
1510
$(PERL) $(srctree)/scripts/namespace.pl
1511
1512
export_report:
1513
$(PERL) $(srctree)/scripts/export_report.pl
1514
April 16, 2005 15:20
1515
endif #ifeq ($(config-targets),1)
1516
endif #ifeq ($(mixed-targets),1)
1517
1518
PHONY += checkstack kernelrelease kernelversion image_name
September 27, 2006 01:50
1519
December 13, 2006 00:34
1520
# UML needs a little special treatment here. It wants to use the host
1521
# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1522
# else wants $(ARCH), including people doing cross-builds, which means
1523
# that $(SUBARCH) doesn't work here.
1524
ifeq ($(ARCH), um)
1525
CHECKSTACK_ARCH := $(SUBARCH)
1526
else
1527
CHECKSTACK_ARCH := $(ARCH)
1528
endif
April 16, 2005 15:20
1529
checkstack:
1530
$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
December 13, 2006 00:34
1531
$(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
April 16, 2005 15:20
1532
1533
kernelrelease:
1534
@echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1535
1536
kernelversion:
1537
@echo $(KERNELVERSION)
April 16, 2005 15:20
1538
1539
image_name:
1540
@echo $(KBUILD_IMAGE)
1541
1542
# Clear a bunch of variables before executing the submake
1543
tools/: FORCE
1544
$(Q)mkdir -p $(objtree)/tools
1545
$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/
1546
1547
tools/%: FORCE
1548
$(Q)mkdir -p $(objtree)/tools
1549
$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(shell cd $(objtree) && /bin/pwd) subdir=tools -C $(src)/tools/ $*
1550
1551
# Single targets
1552
# ---------------------------------------------------------------------------
1553
# Single targets are compatible with:
February 3, 2008 15:14
1554
# - build with mixed source and output
1555
# - build with separate output dir 'make O=...'
1556
# - external modules
1557
#
1558
# target-dir => where to store outputfile
1559
# build-dir => directory in kernel source tree to use
1560
1561
ifeq ($(KBUILD_EXTMOD),)
April 6, 2006 08:25
1562
build-dir = $(patsubst %/,%,$(dir $@))
1563
target-dir = $(dir $@)
1564
else
1565
zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1566
build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1567
target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1568
endif
1569
1570
%.s: %.c prepare scripts FORCE
1571
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1572
%.i: %.c prepare scripts FORCE
1573
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1574
%.o: %.c prepare scripts FORCE
1575
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1576
%.lst: %.c prepare scripts FORCE
1577
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1578
%.s: %.S prepare scripts FORCE
1579
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1580
%.o: %.S prepare scripts FORCE
1581
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1582
%.symtypes: %.c prepare scripts FORCE
1583
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1584
1585
# Modules
December 13, 2008 23:00
1586
/: prepare scripts FORCE
1587
$(cmd_crmodverdir)
1588
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1589
$(build)=$(build-dir)
1590
# Make sure the latest headers are built for Documentation
1591
Documentation/: headers_install
December 13, 2008 23:00
1592
%/: prepare scripts FORCE
October 19, 2007 22:20
1593
$(cmd_crmodverdir)
1594
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1595
$(build)=$(build-dir)
1596
%.ko: prepare scripts FORCE
October 19, 2007 22:20
1597
$(cmd_crmodverdir)
1598
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1599
$(build)=$(build-dir) $(@:.ko=.o)
August 8, 2006 21:36
1600
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1601
1602
# FIXME Should go into a make.lib or something
April 16, 2005 15:20
1603
# ===========================================================================
1604
1605
quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1606
cmd_rmdirs = rm -rf $(rm-dirs)
1607
1608
quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1609
cmd_rmfiles = rm -f $(rm-files)
1610
April 21, 2008 22:53
1611
# Run depmod only if we have System.map and depmod is executable
1612
quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
June 15, 2011 22:15
1613
cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
March 15, 2013 15:04
1614
$(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
1615
October 19, 2007 22:20
1616
# Create temporary dir for module support files
1617
# clean it up only when building all modules
1618
cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1619
$(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
April 16, 2005 15:20
1620
1621
# read all saved command lines
1622
1623
targets := $(wildcard $(sort $(targets)))
1624
cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1625
1626
ifneq ($(cmd_files),)
1627
$(cmd_files): ; # Do not try to update included dependency files
1628
include $(cmd_files)
1629
endif
1630
1631
endif # skip-makefile
1632
1633
PHONY += FORCE
April 16, 2005 15:20
1634
FORCE:
1635
1636
# Declare the contents of the .PHONY variable as phony. We keep that
1637
# information in a variable so we can use it in if_changed and friends.
1638
.PHONY: $(PHONY)