436b0f76f2
Hey, for no other reason than the fact that I'll be off-line for a week. Of course, I could force everybody to just use git (and when I'm emperor of the world, don't think I won't!), but it seems some people want to just test official releases. Even if they are just -rc's. By the time I'm back, Andrew will have fixed all my bugs, and I'll release it as 2.6.15 and take all the credit. Mwahahahaaa Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1328 lines
43 KiB
Makefile
1328 lines
43 KiB
Makefile
VERSION = 2
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PATCHLEVEL = 6
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SUBLEVEL = 15
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EXTRAVERSION =-rc5
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NAME=Affluent Albatross
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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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# Do not print "Entering directory ..."
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MAKEFLAGS += --no-print-directory
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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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# 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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ifdef V
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ifeq ("$(origin V)", "command line")
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KBUILD_VERBOSE = $(V)
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endif
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endif
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ifndef KBUILD_VERBOSE
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KBUILD_VERBOSE = 0
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endif
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# Call sparse as part of compilation of C files
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# Use 'make C=1' to enable sparse checking
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ifdef C
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ifeq ("$(origin C)", "command line")
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KBUILD_CHECKSRC = $(C)
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endif
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endif
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ifndef KBUILD_CHECKSRC
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KBUILD_CHECKSRC = 0
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endif
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# Use make M=dir to specify directory of external module to build
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# Old syntax make ... SUBDIRS=$PWD is still supported
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# Setting the environment variable KBUILD_EXTMOD take precedence
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ifdef SUBDIRS
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KBUILD_EXTMOD ?= $(SUBDIRS)
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endif
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ifdef M
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ifeq ("$(origin M)", "command line")
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KBUILD_EXTMOD := $(M)
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endif
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endif
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# kbuild supports saving output files in a separate directory.
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# To locate output files in a separate directory two syntaxes are supported.
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# In both cases the working directory must be the root of the kernel src.
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# 1) O=
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# Use "make O=dir/to/store/output/files/"
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#
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# 2) Set KBUILD_OUTPUT
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# Set the environment variable KBUILD_OUTPUT to point to the directory
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# where the output files shall be placed.
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# export KBUILD_OUTPUT=dir/to/store/output/files/
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# make
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#
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# The O= assignment takes precedence over the KBUILD_OUTPUT environment
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# variable.
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# KBUILD_SRC is set on invocation of make in OBJ directory
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# KBUILD_SRC is not intended to be used by the regular user (for now)
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ifeq ($(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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ifdef O
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ifeq ("$(origin O)", "command line")
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KBUILD_OUTPUT := $(O)
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endif
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endif
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# That's our default target when none is given on the command line
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.PHONY: _all
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_all:
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ifneq ($(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 cd $(KBUILD_OUTPUT) && /bin/pwd)
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$(if $(KBUILD_OUTPUT),, \
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$(error output directory "$(saved-output)" does not exist))
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.PHONY: $(MAKECMDGOALS)
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$(filter-out _all,$(MAKECMDGOALS)) _all:
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$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
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KBUILD_SRC=$(CURDIR) \
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KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@
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# Leave processing to above invocation of make
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skip-makefile := 1
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endif # ifneq ($(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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# 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
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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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srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
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TOPDIR := $(srctree)
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# FIXME - TOPDIR is obsolete, use srctree/objtree
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objtree := $(CURDIR)
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src := $(srctree)
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obj := $(objtree)
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VPATH := $(srctree)
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export srctree objtree VPATH TOPDIR
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nullstring :=
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space := $(nullstring) # end of line
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# Take the contents of any files called localversion* and the config
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# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. Be
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# careful not to include files twice if building in the source
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# directory. LOCALVERSION from the command line override all of this
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localver := $(objtree)/localversion* $(srctree)/localversion*
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localver := $(sort $(wildcard $(localver)))
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# skip backup files (containing '~')
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localver := $(foreach f, $(localver), $(if $(findstring ~, $(f)),,$(f)))
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LOCALVERSION = $(subst $(space),, \
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$(shell cat /dev/null $(localver)) \
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$(patsubst "%",%,$(CONFIG_LOCALVERSION)))
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KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)$(LOCALVERSION)
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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
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# SUBARCH is subsequently ignored.
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SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -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/ppc64/powerpc/ )
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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.
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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)
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CROSS_COMPILE ?=
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# Architecture as present in compile.h
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UTS_MACHINE := $(ARCH)
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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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HOSTCC = gcc
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HOSTCXX = g++
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HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
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HOSTCXXFLAGS = -O2
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# Decide whether to build built-in, modular, or both.
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# Normally, just do built-in.
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KBUILD_MODULES :=
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KBUILD_BUILTIN := 1
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# If we have only "make modules", don't compile built-in objects.
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# When we're building modules with modversions, we need to consider
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# the built-in objects during the descend as well, in order to
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# make sure the checksums are uptodate before we record them.
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ifeq ($(MAKECMDGOALS),modules)
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KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
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endif
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# If we have "make <whatever> modules", compile modules
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# in addition to whatever we do anyway.
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# Just "make" or "make all" shall build modules as well
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ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
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KBUILD_MODULES := 1
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endif
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ifeq ($(MAKECMDGOALS),)
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KBUILD_MODULES := 1
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endif
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export KBUILD_MODULES KBUILD_BUILTIN
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export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
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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 wil 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 usefull
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# for commands that shall be hidden in non-verbose mode.
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#
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# $(Q)ln $@ :<
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#
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# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
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# If KBUILD_VERBOSE equals 1 then the above command is displayed.
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ifeq ($(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 ($(findstring s,$(MAKEFLAGS)),)
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quiet=silent_
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endif
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export quiet Q KBUILD_VERBOSE
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######
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# cc support functions to be used (only) in arch/$(ARCH)/Makefile
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# See documentation in Documentation/kbuild/makefiles.txt
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# cc-option
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# Usage: cflags-y += $(call cc-option, -march=winchip-c6, -march=i586)
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cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
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> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
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# For backward compatibility
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check_gcc = $(warning check_gcc is deprecated - use cc-option) \
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$(call cc-option, $(1),$(2))
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# cc-option-yn
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# Usage: flag := $(call cc-option-yn, -march=winchip-c6)
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cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
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> /dev/null 2>&1; then echo "y"; else echo "n"; fi;)
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# cc-option-align
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# Prefix align with either -falign or -malign
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cc-option-align = $(subst -functions=0,,\
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$(call cc-option,-falign-functions=0,-malign-functions=0))
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# cc-version
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# Usage gcc-ver := $(call cc-version $(CC))
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cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh \
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$(if $(1), $(1), $(CC)))
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# Look for make include files relative to root of kernel src
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MAKEFLAGS += --include-dir=$(srctree)
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# We need some generic definitions
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include $(srctree)/scripts/Kbuild.include
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# For maximum performance (+ possibly random breakage, uncomment
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# the following)
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#MAKEFLAGS += -rR
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# Make variables (CC, etc...)
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AS = $(CROSS_COMPILE)as
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LD = $(CROSS_COMPILE)ld
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CC = $(CROSS_COMPILE)gcc
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CPP = $(CC) -E
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AR = $(CROSS_COMPILE)ar
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NM = $(CROSS_COMPILE)nm
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STRIP = $(CROSS_COMPILE)strip
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OBJCOPY = $(CROSS_COMPILE)objcopy
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OBJDUMP = $(CROSS_COMPILE)objdump
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AWK = awk
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GENKSYMS = scripts/genksyms/genksyms
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DEPMOD = /sbin/depmod
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KALLSYMS = scripts/kallsyms
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PERL = perl
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CHECK = sparse
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CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF)
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MODFLAGS = -DMODULE
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CFLAGS_MODULE = $(MODFLAGS)
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AFLAGS_MODULE = $(MODFLAGS)
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LDFLAGS_MODULE = -r
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CFLAGS_KERNEL =
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AFLAGS_KERNEL =
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# Use LINUXINCLUDE when you must reference the include/ directory.
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# Needed to be compatible with the O= option
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LINUXINCLUDE := -Iinclude \
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$(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
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-include include/linux/autoconf.h
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CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
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CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
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-fno-strict-aliasing -fno-common \
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-ffreestanding
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AFLAGS := -D__ASSEMBLY__
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export VERSION PATCHLEVEL SUBLEVEL EXTRAVERSION LOCALVERSION KERNELRELEASE \
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ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \
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CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \
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HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
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export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
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export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE
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export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
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# When compiling out-of-tree modules, put MODVERDIR in the module
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# tree rather than in the kernel tree. The kernel tree might
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# even be read-only.
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export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
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# Files to ignore in find ... statements
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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
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export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
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# ===========================================================================
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# Rules shared between *config targets and build targets
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# Basic helpers built in scripts/
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.PHONY: scripts_basic
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scripts_basic:
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$(Q)$(MAKE) $(build)=scripts/basic
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# To avoid any implicit rule to kick in, define an empty command.
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scripts/basic/%: scripts_basic ;
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|
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.PHONY: outputmakefile
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# outputmakefile generate a Makefile to be placed in output directory, if
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# using a seperate output directory. This allows convinient use
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# of make in output directory
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outputmakefile:
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$(Q)if test ! $(srctree) -ef $(objtree); then \
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$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
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$(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) \
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> $(objtree)/Makefile; \
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echo ' GEN $(objtree)/Makefile'; \
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fi
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|
|
# To make sure we do not include .config for any of the *config targets
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|
# catch them early, and hand them over to scripts/kconfig/Makefile
|
|
# It is allowed to specify more targets when calling make, including
|
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# mixing *config targets and build targets.
|
|
# For example 'make oldconfig all'.
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|
# Detect when mixed targets is specified, and make a second invocation
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# of make so .config is not included in this case either (for *config).
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no-dot-config-targets := clean mrproper distclean \
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|
cscope TAGS tags help %docs check% kernelrelease
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config-targets := 0
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mixed-targets := 0
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|
dot-config := 1
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|
|
ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
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ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
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|
dot-config := 0
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|
endif
|
|
endif
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|
|
|
ifeq ($(KBUILD_EXTMOD),)
|
|
ifneq ($(filter config %config,$(MAKECMDGOALS)),)
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|
config-targets := 1
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|
ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
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|
mixed-targets := 1
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endif
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|
endif
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|
endif
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|
|
|
ifeq ($(mixed-targets),1)
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|
# ===========================================================================
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|
# We're called with mixed targets (*config and build targets).
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|
# Handle them one by one.
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|
|
|
%:: FORCE
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$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
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|
|
else
|
|
ifeq ($(config-targets),1)
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|
# ===========================================================================
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|
# *config targets only - make sure prerequisites are updated, and descend
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|
# in scripts/kconfig to make the *config target
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|
|
|
# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
|
|
# KBUILD_DEFCONFIG may point out an alternative default configuration
|
|
# used for 'make defconfig'
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|
include $(srctree)/arch/$(ARCH)/Makefile
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|
export KBUILD_DEFCONFIG
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|
|
|
config %config: scripts_basic outputmakefile FORCE
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|
$(Q)mkdir -p include/linux
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|
$(Q)$(MAKE) $(build)=scripts/kconfig $@
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|
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else
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|
# ===========================================================================
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|
# Build targets only - this includes vmlinux, arch specific targets, clean
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|
# targets and others. In general all targets except *config targets.
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|
|
|
ifeq ($(KBUILD_EXTMOD),)
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|
# Additional helpers built in scripts/
|
|
# Carefully list dependencies so we do not try to build scripts twice
|
|
# in parrallel
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|
.PHONY: scripts
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|
scripts: scripts_basic include/config/MARKER
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|
$(Q)$(MAKE) $(build)=$(@)
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|
|
|
scripts_basic: include/linux/autoconf.h
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|
|
|
# Objects we will link into vmlinux / subdirs we need to visit
|
|
init-y := init/
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|
drivers-y := drivers/ sound/
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|
net-y := net/
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|
libs-y := lib/
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|
core-y := usr/
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|
endif # KBUILD_EXTMOD
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|
|
|
ifeq ($(dot-config),1)
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|
# In this section, we need .config
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|
|
|
# Read in dependencies to all Kconfig* files, make sure to run
|
|
# oldconfig if changes are detected.
|
|
-include .config.cmd
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|
|
|
include .config
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|
|
|
# If .config needs to be updated, it will be done via the dependency
|
|
# that autoconf has on .config.
|
|
# To avoid any implicit rule to kick in, define an empty command
|
|
.config: ;
|
|
|
|
# If .config is newer than include/linux/autoconf.h, someone tinkered
|
|
# with it and forgot to run make oldconfig
|
|
include/linux/autoconf.h: .config
|
|
$(Q)mkdir -p include/linux
|
|
$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
|
|
else
|
|
# Dummy target needed, because used as prerequisite
|
|
include/linux/autoconf.h: ;
|
|
endif
|
|
|
|
# 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
|
|
# Defaults vmlinux but it is usually overriden in the arch makefile
|
|
all: vmlinux
|
|
|
|
ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
|
|
CFLAGS += -Os
|
|
else
|
|
CFLAGS += -O2
|
|
endif
|
|
|
|
#Add align options if CONFIG_CC_* is not equal to 0
|
|
add-align = $(if $(filter-out 0,$($(1))),$(cc-option-align)$(2)=$($(1)))
|
|
CFLAGS += $(call add-align,CONFIG_CC_ALIGN_FUNCTIONS,-functions)
|
|
CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LABELS,-labels)
|
|
CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
|
|
CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
|
|
|
|
ifdef CONFIG_FRAME_POINTER
|
|
CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
|
|
else
|
|
CFLAGS += -fomit-frame-pointer
|
|
endif
|
|
|
|
ifdef CONFIG_DEBUG_INFO
|
|
CFLAGS += -g
|
|
endif
|
|
|
|
include $(srctree)/arch/$(ARCH)/Makefile
|
|
|
|
# arch Makefile may override CC so keep this after arch Makefile is included
|
|
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
|
|
CHECKFLAGS += $(NOSTDINC_FLAGS)
|
|
|
|
# warn about C99 declaration after statement
|
|
CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
|
|
|
|
# disable pointer signedness warnings in gcc 4.0
|
|
CFLAGS += $(call cc-option,-Wno-pointer-sign,)
|
|
|
|
# Default kernel image to build when no specific target is given.
|
|
# KBUILD_IMAGE may be overruled on the commandline or
|
|
# set in the environment
|
|
# Also any assignments in arch/$(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
|
|
|
|
# If CONFIG_LOCALVERSION_AUTO is set, we automatically perform some tests
|
|
# and try to determine if the current source tree is a release tree, of any sort,
|
|
# or if is a pure development tree.
|
|
#
|
|
# A 'release tree' is any tree with a git TAG associated
|
|
# with it. The primary goal of this is to make it safe for a native
|
|
# git/CVS/SVN user to build a release tree (i.e, 2.6.9) and also to
|
|
# continue developing against the current Linus tree, without having the Linus
|
|
# tree overwrite the 2.6.9 tree when installed.
|
|
#
|
|
# Currently, only git is supported.
|
|
# Other SCMs can edit scripts/setlocalversion and add the appropriate
|
|
# checks as needed.
|
|
|
|
|
|
ifdef CONFIG_LOCALVERSION_AUTO
|
|
localversion-auto := $(shell $(PERL) $(srctree)/scripts/setlocalversion $(srctree))
|
|
LOCALVERSION := $(LOCALVERSION)$(localversion-auto)
|
|
endif
|
|
|
|
#
|
|
# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
|
|
# relocations required by build roots. This is not defined in the
|
|
# makefile but the arguement can be passed to make if needed.
|
|
#
|
|
|
|
MODLIB := $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
|
|
export MODLIB
|
|
|
|
|
|
ifeq ($(KBUILD_EXTMOD),)
|
|
core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
|
|
|
|
vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
|
|
$(core-y) $(core-m) $(drivers-y) $(drivers-m) \
|
|
$(net-y) $(net-m) $(libs-y) $(libs-m)))
|
|
|
|
vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
|
|
$(init-n) $(init-) \
|
|
$(core-n) $(core-) $(drivers-n) $(drivers-) \
|
|
$(net-n) $(net-) $(libs-n) $(libs-))))
|
|
|
|
init-y := $(patsubst %/, %/built-in.o, $(init-y))
|
|
core-y := $(patsubst %/, %/built-in.o, $(core-y))
|
|
drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
|
|
net-y := $(patsubst %/, %/built-in.o, $(net-y))
|
|
libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
|
|
libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
|
|
libs-y := $(libs-y1) $(libs-y2)
|
|
|
|
# Build vmlinux
|
|
# ---------------------------------------------------------------------------
|
|
# vmlinux is build from the objects selected by $(vmlinux-init) and
|
|
# $(vmlinux-main). Most are built-in.o files from top-level directories
|
|
# in the kernel tree, others are specified in arch/$(ARCH)Makefile.
|
|
# Ordering when linking is important, and $(vmlinux-init) must be first.
|
|
#
|
|
# vmlinux
|
|
# ^
|
|
# |
|
|
# +-< $(vmlinux-init)
|
|
# | +--< init/version.o + more
|
|
# |
|
|
# +--< $(vmlinux-main)
|
|
# | +--< driver/built-in.o mm/built-in.o + more
|
|
# |
|
|
# +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
|
|
#
|
|
# vmlinux version (uname -v) cannot be updated during normal
|
|
# descending-into-subdirs phase since we do not yet know if we need to
|
|
# update vmlinux.
|
|
# Therefore this step is delayed until just before final link of vmlinux -
|
|
# except in the kallsyms case where it is done just before adding the
|
|
# symbols to the kernel.
|
|
#
|
|
# System.map is generated to document addresses of all kernel symbols
|
|
|
|
vmlinux-init := $(head-y) $(init-y)
|
|
vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
|
|
vmlinux-all := $(vmlinux-init) $(vmlinux-main)
|
|
vmlinux-lds := arch/$(ARCH)/kernel/vmlinux.lds
|
|
|
|
# Rule to link vmlinux - also used during CONFIG_KALLSYMS
|
|
# May be overridden by arch/$(ARCH)/Makefile
|
|
quiet_cmd_vmlinux__ ?= LD $@
|
|
cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
|
|
-T $(vmlinux-lds) $(vmlinux-init) \
|
|
--start-group $(vmlinux-main) --end-group \
|
|
$(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
|
|
|
|
# Generate new vmlinux version
|
|
quiet_cmd_vmlinux_version = GEN .version
|
|
cmd_vmlinux_version = set -e; \
|
|
if [ ! -r .version ]; then \
|
|
rm -f .version; \
|
|
echo 1 >.version; \
|
|
else \
|
|
mv .version .old_version; \
|
|
expr 0$$(cat .old_version) + 1 >.version; \
|
|
fi; \
|
|
$(MAKE) $(build)=init
|
|
|
|
# Generate System.map
|
|
quiet_cmd_sysmap = SYSMAP
|
|
cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
|
|
|
|
# Link of vmlinux
|
|
# If CONFIG_KALLSYMS is set .version is already updated
|
|
# Generate System.map and verify that the content is consistent
|
|
# Use + in front of the vmlinux_version rule to silent warning with make -j2
|
|
# First command is ':' to allow us to use + in front of the rule
|
|
define rule_vmlinux__
|
|
:
|
|
$(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
|
|
|
|
$(call cmd,vmlinux__)
|
|
$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
|
|
|
|
$(Q)$(if $($(quiet)cmd_sysmap), \
|
|
echo ' $($(quiet)cmd_sysmap) System.map' &&) \
|
|
$(cmd_sysmap) $@ System.map; \
|
|
if [ $$? -ne 0 ]; then \
|
|
rm -f $@; \
|
|
/bin/false; \
|
|
fi;
|
|
$(verify_kallsyms)
|
|
endef
|
|
|
|
|
|
ifdef CONFIG_KALLSYMS
|
|
# Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
|
|
# It's a three stage process:
|
|
# o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
|
|
# empty
|
|
# Running kallsyms on that gives us .tmp_kallsyms1.o with
|
|
# the right size - vmlinux version (uname -v) is updated during this step
|
|
# o .tmp_vmlinux2 now has a __kallsyms section of the right size,
|
|
# but due to the added section, some addresses have shifted.
|
|
# From here, we generate a correct .tmp_kallsyms2.o
|
|
# o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
|
|
# o Verify that the System.map from vmlinux matches the map from
|
|
# .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
|
|
# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
|
|
# .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
|
|
# temporary bypass to allow the kernel to be built while the
|
|
# maintainers work out what went wrong with kallsyms.
|
|
|
|
ifdef CONFIG_KALLSYMS_EXTRA_PASS
|
|
last_kallsyms := 3
|
|
else
|
|
last_kallsyms := 2
|
|
endif
|
|
|
|
kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
|
|
|
|
define verify_kallsyms
|
|
$(Q)$(if $($(quiet)cmd_sysmap), \
|
|
echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
|
|
$(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
|
|
$(Q)cmp -s System.map .tmp_System.map || \
|
|
(echo Inconsistent kallsyms data; \
|
|
echo Try setting CONFIG_KALLSYMS_EXTRA_PASS; \
|
|
rm .tmp_kallsyms* ; /bin/false )
|
|
endef
|
|
|
|
# Update vmlinux version before link
|
|
# Use + in front of this rule to silent warning about make -j1
|
|
# First command is ':' to allow us to use + in front of this rule
|
|
cmd_ksym_ld = $(cmd_vmlinux__)
|
|
define rule_ksym_ld
|
|
:
|
|
+$(call cmd,vmlinux_version)
|
|
$(call cmd,vmlinux__)
|
|
$(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
|
|
endef
|
|
|
|
# Generate .S file with all kernel symbols
|
|
quiet_cmd_kallsyms = KSYM $@
|
|
cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
|
|
$(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
|
|
|
|
.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
|
|
$(call if_changed_dep,as_o_S)
|
|
|
|
.tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
|
|
$(call cmd,kallsyms)
|
|
|
|
# .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
|
|
.tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
|
|
$(call if_changed_rule,ksym_ld)
|
|
|
|
.tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
|
|
$(call if_changed,vmlinux__)
|
|
|
|
.tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
|
|
$(call if_changed,vmlinux__)
|
|
|
|
# Needs to visit scripts/ before $(KALLSYMS) can be used.
|
|
$(KALLSYMS): scripts ;
|
|
|
|
# Generate some data for debugging strange kallsyms problems
|
|
debug_kallsyms: .tmp_map$(last_kallsyms)
|
|
|
|
.tmp_map%: .tmp_vmlinux% FORCE
|
|
($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
|
|
|
|
.tmp_map3: .tmp_map2
|
|
|
|
.tmp_map2: .tmp_map1
|
|
|
|
endif # ifdef CONFIG_KALLSYMS
|
|
|
|
# vmlinux image - including updated kernel symbols
|
|
vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
|
|
$(call if_changed_rule,vmlinux__)
|
|
$(Q)rm -f .old_version
|
|
|
|
# The actual objects are generated when descending,
|
|
# make sure no implicit rule kicks in
|
|
$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
|
|
|
|
# Handle descending into subdirectories listed in $(vmlinux-dirs)
|
|
# Preset locale variables to speed up the build process. Limit locale
|
|
# tweaks to this spot to avoid wrong language settings when running
|
|
# make menuconfig etc.
|
|
# Error messages still appears in the original language
|
|
|
|
.PHONY: $(vmlinux-dirs)
|
|
$(vmlinux-dirs): prepare scripts
|
|
$(Q)$(MAKE) $(build)=$@
|
|
|
|
# Things we need to do before we recursively start building the kernel
|
|
# 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.
|
|
|
|
# Listed in dependency order
|
|
.PHONY: prepare archprepare prepare0 prepare1 prepare2 prepare3
|
|
|
|
# prepare-all is deprecated, use prepare as valid replacement
|
|
.PHONY: prepare-all
|
|
|
|
# prepare3 is used to check if we are building in a separate output directory,
|
|
# and if so do:
|
|
# 1) Check that make has not been executed in the kernel src $(srctree)
|
|
# 2) Create the include2 directory, used for the second asm symlink
|
|
|
|
prepare3:
|
|
ifneq ($(KBUILD_SRC),)
|
|
@echo ' Using $(srctree) as source for kernel'
|
|
$(Q)if [ -f $(srctree)/.config ]; then \
|
|
echo " $(srctree) is not clean, please run 'make mrproper'";\
|
|
echo " in the '$(srctree)' directory.";\
|
|
/bin/false; \
|
|
fi;
|
|
$(Q)if [ ! -d include2 ]; then mkdir -p include2; fi;
|
|
$(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm
|
|
endif
|
|
|
|
# prepare2 creates a makefile if using a separate output directory
|
|
prepare2: prepare3 outputmakefile
|
|
|
|
prepare1: prepare2 include/linux/version.h include/asm \
|
|
include/config/MARKER
|
|
ifneq ($(KBUILD_MODULES),)
|
|
$(Q)rm -rf $(MODVERDIR)
|
|
$(Q)mkdir -p $(MODVERDIR)
|
|
endif
|
|
|
|
archprepare: prepare1 scripts_basic
|
|
|
|
prepare0: archprepare FORCE
|
|
$(Q)$(MAKE) $(build)=.
|
|
|
|
# All the preparing..
|
|
prepare prepare-all: prepare0
|
|
|
|
# Leave this as default for preprocessing vmlinux.lds.S, which is now
|
|
# done in arch/$(ARCH)/kernel/Makefile
|
|
|
|
export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
|
|
|
|
# Single targets
|
|
# ---------------------------------------------------------------------------
|
|
|
|
%.s: %.c scripts FORCE
|
|
$(Q)$(MAKE) $(build)=$(@D) $@
|
|
%.i: %.c scripts FORCE
|
|
$(Q)$(MAKE) $(build)=$(@D) $@
|
|
%.o: %.c scripts FORCE
|
|
$(Q)$(MAKE) $(build)=$(@D) $@
|
|
%.ko: scripts FORCE
|
|
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@D) $(@:.ko=.o)
|
|
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
|
|
%/: scripts prepare FORCE
|
|
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) $(build)=$(@D)
|
|
%.lst: %.c scripts FORCE
|
|
$(Q)$(MAKE) $(build)=$(@D) $@
|
|
%.s: %.S scripts FORCE
|
|
$(Q)$(MAKE) $(build)=$(@D) $@
|
|
%.o: %.S scripts FORCE
|
|
$(Q)$(MAKE) $(build)=$(@D) $@
|
|
|
|
# FIXME: The asm symlink changes when $(ARCH) changes. That's
|
|
# hard to detect, but I suppose "make mrproper" is a good idea
|
|
# before switching between archs anyway.
|
|
|
|
include/asm:
|
|
@echo ' SYMLINK $@ -> include/asm-$(ARCH)'
|
|
$(Q)if [ ! -d include ]; then mkdir -p include; fi;
|
|
@ln -fsn asm-$(ARCH) $@
|
|
|
|
# Split autoconf.h into include/linux/config/*
|
|
|
|
include/config/MARKER: scripts/basic/split-include include/linux/autoconf.h
|
|
@echo ' SPLIT include/linux/autoconf.h -> include/config/*'
|
|
@scripts/basic/split-include include/linux/autoconf.h include/config
|
|
@touch $@
|
|
|
|
# Generate some files
|
|
# ---------------------------------------------------------------------------
|
|
|
|
# KERNELRELEASE can change from a few different places, meaning version.h
|
|
# needs to be updated, so this check is forced on all builds
|
|
|
|
uts_len := 64
|
|
|
|
define filechk_version.h
|
|
if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
|
|
echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
|
|
exit 1; \
|
|
fi; \
|
|
(echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"; \
|
|
echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + $(PATCHLEVEL) \\* 256 + $(SUBLEVEL)`; \
|
|
echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; \
|
|
)
|
|
endef
|
|
|
|
include/linux/version.h: $(srctree)/Makefile FORCE
|
|
$(call filechk,version.h)
|
|
|
|
# ---------------------------------------------------------------------------
|
|
|
|
.PHONY: depend dep
|
|
depend dep:
|
|
@echo '*** Warning: make $@ is unnecessary now.'
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Modules
|
|
|
|
ifdef CONFIG_MODULES
|
|
|
|
# By default, build modules as well
|
|
|
|
all: modules
|
|
|
|
# Build modules
|
|
|
|
.PHONY: modules
|
|
modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
|
|
@echo ' Building modules, stage 2.';
|
|
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
|
|
|
|
|
|
# Target to prepare building external modules
|
|
.PHONY: modules_prepare
|
|
modules_prepare: prepare scripts
|
|
|
|
# Target to install modules
|
|
.PHONY: modules_install
|
|
modules_install: _modinst_ _modinst_post
|
|
|
|
.PHONY: _modinst_
|
|
_modinst_:
|
|
@if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
|
|
echo "Warning: you may need to install module-init-tools"; \
|
|
echo "See http://www.codemonkey.org.uk/docs/post-halloween-2.6.txt";\
|
|
sleep 1; \
|
|
fi
|
|
@rm -rf $(MODLIB)/kernel
|
|
@rm -f $(MODLIB)/source
|
|
@mkdir -p $(MODLIB)/kernel
|
|
@ln -s $(srctree) $(MODLIB)/source
|
|
@if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
|
|
rm -f $(MODLIB)/build ; \
|
|
ln -s $(objtree) $(MODLIB)/build ; \
|
|
fi
|
|
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
|
|
|
|
# If System.map exists, run depmod. This deliberately does not have a
|
|
# dependency on System.map since that would run the dependency tree on
|
|
# vmlinux. This depmod is only for convenience to give the initial
|
|
# boot a modules.dep even before / is mounted read-write. However the
|
|
# boot script depmod is the master version.
|
|
ifeq "$(strip $(INSTALL_MOD_PATH))" ""
|
|
depmod_opts :=
|
|
else
|
|
depmod_opts := -b $(INSTALL_MOD_PATH) -r
|
|
endif
|
|
.PHONY: _modinst_post
|
|
_modinst_post: _modinst_
|
|
if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
|
|
|
|
else # CONFIG_MODULES
|
|
|
|
# Modules not configured
|
|
# ---------------------------------------------------------------------------
|
|
|
|
modules modules_install: FORCE
|
|
@echo
|
|
@echo "The present kernel configuration has modules disabled."
|
|
@echo "Type 'make config' and enable loadable module support."
|
|
@echo "Then build a kernel with module support enabled."
|
|
@echo
|
|
@exit 1
|
|
|
|
endif # CONFIG_MODULES
|
|
|
|
###
|
|
# Cleaning is done on three levels.
|
|
# make clean Delete most generated files
|
|
# Leave enough to build external modules
|
|
# make mrproper Delete the current configuration, and all generated files
|
|
# make distclean Remove editor backup files, patch leftover files and the like
|
|
|
|
# Directories & files removed with 'make clean'
|
|
CLEAN_DIRS += $(MODVERDIR)
|
|
CLEAN_FILES += vmlinux System.map \
|
|
.tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
|
|
|
|
# Directories & files removed with 'make mrproper'
|
|
MRPROPER_DIRS += include/config include2
|
|
MRPROPER_FILES += .config .config.old include/asm .version \
|
|
include/linux/autoconf.h include/linux/version.h \
|
|
Module.symvers tags TAGS cscope*
|
|
|
|
# clean - Delete most, but leave enough to build external modules
|
|
#
|
|
clean: rm-dirs := $(CLEAN_DIRS)
|
|
clean: rm-files := $(CLEAN_FILES)
|
|
clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
|
|
|
|
.PHONY: $(clean-dirs) clean archclean
|
|
$(clean-dirs):
|
|
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
|
|
|
|
clean: archclean $(clean-dirs)
|
|
$(call cmd,rmdirs)
|
|
$(call cmd,rmfiles)
|
|
@find . $(RCS_FIND_IGNORE) \
|
|
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
|
|
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
|
|
-type f -print | xargs rm -f
|
|
|
|
# mrproper - Delete all generated files, including .config
|
|
#
|
|
mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
|
|
mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
|
|
mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
|
|
|
|
.PHONY: $(mrproper-dirs) mrproper archmrproper
|
|
$(mrproper-dirs):
|
|
$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
|
|
|
|
mrproper: clean archmrproper $(mrproper-dirs)
|
|
$(call cmd,rmdirs)
|
|
$(call cmd,rmfiles)
|
|
|
|
# distclean
|
|
#
|
|
.PHONY: distclean
|
|
|
|
distclean: mrproper
|
|
@find $(srctree) $(RCS_FIND_IGNORE) \
|
|
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
|
|
-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
|
|
-o -name '.*.rej' -o -size 0 \
|
|
-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
|
|
-type f -print | xargs rm -f
|
|
|
|
|
|
# Packaging of the kernel to various formats
|
|
# ---------------------------------------------------------------------------
|
|
# rpm target kept for backward compatibility
|
|
package-dir := $(srctree)/scripts/package
|
|
|
|
.PHONY: %-pkg rpm
|
|
|
|
%pkg: FORCE
|
|
$(Q)$(MAKE) -f $(package-dir)/Makefile $@
|
|
rpm: FORCE
|
|
$(Q)$(MAKE) -f $(package-dir)/Makefile $@
|
|
|
|
|
|
# Brief documentation of the typical targets used
|
|
# ---------------------------------------------------------------------------
|
|
|
|
boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
|
|
boards := $(notdir $(boards))
|
|
|
|
help:
|
|
@echo 'Cleaning targets:'
|
|
@echo ' clean - remove most generated files but keep the config'
|
|
@echo ' mrproper - remove all generated files + config + various backup files'
|
|
@echo ''
|
|
@echo 'Configuration targets:'
|
|
@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
|
|
@echo ''
|
|
@echo 'Other generic targets:'
|
|
@echo ' all - Build all targets marked with [*]'
|
|
@echo '* vmlinux - Build the bare kernel'
|
|
@echo '* modules - Build all modules'
|
|
@echo ' modules_install - Install all modules'
|
|
@echo ' dir/ - Build all files in dir and below'
|
|
@echo ' dir/file.[ois] - Build specified target only'
|
|
@echo ' dir/file.ko - Build module including final link'
|
|
@echo ' rpm - Build a kernel as an RPM package'
|
|
@echo ' tags/TAGS - Generate tags file for editors'
|
|
@echo ' cscope - Generate cscope index'
|
|
@echo ' kernelrelease - Output the release version string'
|
|
@echo ''
|
|
@echo 'Static analysers'
|
|
@echo ' buildcheck - List dangling references to vmlinux discarded sections'
|
|
@echo ' and init sections from non-init sections'
|
|
@echo ' checkstack - Generate a list of stack hogs'
|
|
@echo ' namespacecheck - Name space analysis on compiled kernel'
|
|
@echo ''
|
|
@echo 'Kernel packaging:'
|
|
@$(MAKE) -f $(package-dir)/Makefile help
|
|
@echo ''
|
|
@echo 'Documentation targets:'
|
|
@$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
|
|
@echo ''
|
|
@echo 'Architecture specific targets ($(ARCH)):'
|
|
@$(if $(archhelp),$(archhelp),\
|
|
echo ' No architecture specific help defined for $(ARCH)')
|
|
@echo ''
|
|
@$(if $(boards), \
|
|
$(foreach b, $(boards), \
|
|
printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
|
|
echo '')
|
|
|
|
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
|
|
@echo ' make O=dir [targets] Locate all output files in "dir", including .config'
|
|
@echo ' make C=1 [targets] Check all c source with $$CHECK (sparse)'
|
|
@echo ' make C=2 [targets] Force check of all c source with $$CHECK (sparse)'
|
|
@echo ''
|
|
@echo 'Execute "make" or "make all" to build all targets marked with [*] '
|
|
@echo 'For further info see the ./README file'
|
|
|
|
|
|
# Documentation targets
|
|
# ---------------------------------------------------------------------------
|
|
%docs: scripts_basic FORCE
|
|
$(Q)$(MAKE) $(build)=Documentation/DocBook $@
|
|
|
|
else # KBUILD_EXTMOD
|
|
|
|
###
|
|
# External module support.
|
|
# When building external modules the kernel used as basis is considered
|
|
# read-only, and no consistency checks are made and the make
|
|
# system is not used on the basis kernel. If updates are required
|
|
# in the basis kernel ordinary make commands (without M=...) must
|
|
# be used.
|
|
#
|
|
# The following are the only valid targets when building external
|
|
# modules.
|
|
# make M=dir clean Delete all automatically generated files
|
|
# make M=dir modules Make all modules in specified dir
|
|
# make M=dir Same as 'make M=dir modules'
|
|
# make M=dir modules_install
|
|
# Install the modules build in the module directory
|
|
# Assumes install directory is already created
|
|
|
|
# We are always building modules
|
|
KBUILD_MODULES := 1
|
|
.PHONY: crmodverdir
|
|
crmodverdir:
|
|
$(Q)mkdir -p $(MODVERDIR)
|
|
|
|
.PHONY: $(objtree)/Module.symvers
|
|
$(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))
|
|
.PHONY: $(module-dirs) modules
|
|
$(module-dirs): crmodverdir $(objtree)/Module.symvers
|
|
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
|
|
|
|
modules: $(module-dirs)
|
|
@echo ' Building modules, stage 2.';
|
|
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
|
|
|
|
.PHONY: modules_install
|
|
modules_install:
|
|
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
|
|
|
|
clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
|
|
|
|
.PHONY: $(clean-dirs) clean
|
|
$(clean-dirs):
|
|
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
|
|
|
|
clean: rm-dirs := $(MODVERDIR)
|
|
clean: $(clean-dirs)
|
|
$(call cmd,rmdirs)
|
|
@find $(KBUILD_EXTMOD) $(RCS_FIND_IGNORE) \
|
|
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
|
|
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \
|
|
-type f -print | xargs rm -f
|
|
|
|
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 ''
|
|
endif # KBUILD_EXTMOD
|
|
|
|
# Generate tags for editors
|
|
# ---------------------------------------------------------------------------
|
|
|
|
#We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
|
|
#(which is the most common case IMHO) to avoid unneeded clutter in the big tags file.
|
|
#Adding $(srctree) adds about 20M on i386 to the size of the output file!
|
|
|
|
ifeq ($(src),$(obj))
|
|
__srctree =
|
|
else
|
|
__srctree = $(srctree)/
|
|
endif
|
|
|
|
ifeq ($(ALLSOURCE_ARCHS),)
|
|
ifeq ($(ARCH),um)
|
|
ALLINCLUDE_ARCHS := $(ARCH) $(SUBARCH)
|
|
else
|
|
ALLINCLUDE_ARCHS := $(ARCH)
|
|
endif
|
|
else
|
|
#Allow user to specify only ALLSOURCE_PATHS on the command line, keeping existing behaviour.
|
|
ALLINCLUDE_ARCHS := $(ALLSOURCE_ARCHS)
|
|
endif
|
|
|
|
ALLSOURCE_ARCHS := $(ARCH)
|
|
|
|
define all-sources
|
|
( find $(__srctree) $(RCS_FIND_IGNORE) \
|
|
\( -name include -o -name arch \) -prune -o \
|
|
-name '*.[chS]' -print; \
|
|
for ARCH in $(ALLSOURCE_ARCHS) ; do \
|
|
find $(__srctree)arch/$${ARCH} $(RCS_FIND_IGNORE) \
|
|
-name '*.[chS]' -print; \
|
|
done ; \
|
|
find $(__srctree)security/selinux/include $(RCS_FIND_IGNORE) \
|
|
-name '*.[chS]' -print; \
|
|
find $(__srctree)include $(RCS_FIND_IGNORE) \
|
|
\( -name config -o -name 'asm-*' \) -prune \
|
|
-o -name '*.[chS]' -print; \
|
|
for ARCH in $(ALLINCLUDE_ARCHS) ; do \
|
|
find $(__srctree)include/asm-$${ARCH} $(RCS_FIND_IGNORE) \
|
|
-name '*.[chS]' -print; \
|
|
done ; \
|
|
find $(__srctree)include/asm-generic $(RCS_FIND_IGNORE) \
|
|
-name '*.[chS]' -print )
|
|
endef
|
|
|
|
quiet_cmd_cscope-file = FILELST cscope.files
|
|
cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files
|
|
|
|
quiet_cmd_cscope = MAKE cscope.out
|
|
cmd_cscope = cscope -b
|
|
|
|
cscope: FORCE
|
|
$(call cmd,cscope-file)
|
|
$(call cmd,cscope)
|
|
|
|
quiet_cmd_TAGS = MAKE $@
|
|
define cmd_TAGS
|
|
rm -f $@; \
|
|
ETAGSF=`etags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL --extra=+f"`; \
|
|
$(all-sources) | xargs etags $$ETAGSF -a
|
|
endef
|
|
|
|
TAGS: FORCE
|
|
$(call cmd,TAGS)
|
|
|
|
|
|
quiet_cmd_tags = MAKE $@
|
|
define cmd_tags
|
|
rm -f $@; \
|
|
CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL --extra=+f"`; \
|
|
$(all-sources) | xargs ctags $$CTAGSF -a
|
|
endef
|
|
|
|
tags: FORCE
|
|
$(call cmd,tags)
|
|
|
|
|
|
# Scripts to check various things for consistency
|
|
# ---------------------------------------------------------------------------
|
|
|
|
includecheck:
|
|
find * $(RCS_FIND_IGNORE) \
|
|
-name '*.[hcS]' -type f -print | sort \
|
|
| xargs $(PERL) -w scripts/checkincludes.pl
|
|
|
|
versioncheck:
|
|
find * $(RCS_FIND_IGNORE) \
|
|
-name '*.[hcS]' -type f -print | sort \
|
|
| xargs $(PERL) -w scripts/checkversion.pl
|
|
|
|
buildcheck:
|
|
$(PERL) $(srctree)/scripts/reference_discarded.pl
|
|
$(PERL) $(srctree)/scripts/reference_init.pl
|
|
|
|
namespacecheck:
|
|
$(PERL) $(srctree)/scripts/namespace.pl
|
|
|
|
endif #ifeq ($(config-targets),1)
|
|
endif #ifeq ($(mixed-targets),1)
|
|
|
|
.PHONY: checkstack
|
|
checkstack:
|
|
$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
|
|
$(PERL) $(src)/scripts/checkstack.pl $(ARCH)
|
|
|
|
kernelrelease:
|
|
@echo $(KERNELRELEASE)
|
|
|
|
# FIXME Should go into a make.lib or something
|
|
# ===========================================================================
|
|
|
|
quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
|
|
cmd_rmdirs = rm -rf $(rm-dirs)
|
|
|
|
quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
|
|
cmd_rmfiles = rm -f $(rm-files)
|
|
|
|
|
|
a_flags = -Wp,-MD,$(depfile) $(AFLAGS) $(AFLAGS_KERNEL) \
|
|
$(NOSTDINC_FLAGS) $(CPPFLAGS) \
|
|
$(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(*F).o)
|
|
|
|
quiet_cmd_as_o_S = AS $@
|
|
cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
|
|
|
|
# read all saved command lines
|
|
|
|
targets := $(wildcard $(sort $(targets)))
|
|
cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
|
|
|
|
ifneq ($(cmd_files),)
|
|
$(cmd_files): ; # Do not try to update included dependency files
|
|
include $(cmd_files)
|
|
endif
|
|
|
|
# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
|
|
# Usage:
|
|
# $(Q)$(MAKE) $(clean)=dir
|
|
clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
|
|
|
|
endif # skip-makefile
|
|
|
|
FORCE:
|