VERSION = 1 PATCHLEVEL = 1 SUBLEVEL = 0 EXTRAVERSION = Palacios NAME=Palacios # *DOCUMENTATION* # To see a list of typical targets execute "make help" # More info can be located in ./README # Comments in this file are targeted only to the developer, do not # expect to learn how to build the kernel reading this file. # Do not print "Entering directory ..." MAKEFLAGS += --no-print-directory # We are using a recursive build, so we need to do a little thinking # to get the ordering right. # # Most importantly: sub-Makefiles should only ever modify files in # their own directory. If in some directory we have a dependency on # a file in another dir (which doesn't happen often, but it's often # unavoidable when linking the built-in.o targets which finally # turn into palacios), we will call a sub make in that other dir, and # after that we are sure that everything which is in that other dir # is now up to date. # # The only cases where we need to modify files which have global # effects are thus separated out and done before the recursive # descending is started. They are now explicitly listed as the # prepare rule. # To put more focus on warnings, be less verbose as default # Use 'make V=1' to see the full commands ifdef V ifeq ("$(origin V)", "command line") KBUILD_VERBOSE = $(V) endif endif ifndef KBUILD_VERBOSE KBUILD_VERBOSE = 0 endif # Call sparse as part of compilation of C files # Use 'make C=1' to enable sparse checking ifdef C ifeq ("$(origin C)", "command line") KBUILD_CHECKSRC = $(C) endif endif ifndef KBUILD_CHECKSRC KBUILD_CHECKSRC = 0 endif # Use make M=dir to specify directory of external module to build # Old syntax make ... SUBDIRS=$PWD is still supported # Setting the environment variable KBUILD_EXTMOD take precedence ifdef SUBDIRS KBUILD_EXTMOD ?= $(SUBDIRS) endif ifdef M ifeq ("$(origin M)", "command line") KBUILD_EXTMOD := $(M) endif endif # kbuild supports saving output files in a separate directory. # To locate output files in a separate directory two syntaxes are supported. # In both cases the working directory must be the root of the kernel src. # 1) O= # Use "make O=dir/to/store/output/files/" # # 2) Set KBUILD_OUTPUT # Set the environment variable KBUILD_OUTPUT to point to the directory # where the output files shall be placed. # export KBUILD_OUTPUT=dir/to/store/output/files/ # make # # The O= assignment takes precedence over the KBUILD_OUTPUT environment # variable. # KBUILD_SRC is set on invocation of make in OBJ directory # KBUILD_SRC is not intended to be used by the regular user (for now) ifeq ($(KBUILD_SRC),) # OK, Make called in directory where kernel src resides # Do we want to locate output files in a separate directory? ifdef O ifeq ("$(origin O)", "command line") KBUILD_OUTPUT := $(O) endif endif # That's our default target when none is given on the command line PHONY := _all _all: ifneq ($(KBUILD_OUTPUT),) # Invoke a second make in the output directory, passing relevant variables # check that the output directory actually exists saved-output := $(KBUILD_OUTPUT) KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) $(if $(KBUILD_OUTPUT),, \ $(error output directory "$(saved-output)" does not exist)) PHONY += $(MAKECMDGOALS) $(filter-out _all,$(MAKECMDGOALS)) _all: $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ KBUILD_SRC=$(CURDIR) \ KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile $@ # Leave processing to above invocation of make skip-makefile := 1 endif # ifneq ($(KBUILD_OUTPUT),) endif # ifeq ($(KBUILD_SRC),) # We process the rest of the Makefile if this is the final invocation of make ifeq ($(skip-makefile),) # If building an external module we do not care about the all: rule # but instead _all depend on modules PHONY += all _all: all srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) TOPDIR := $(srctree) # FIXME - TOPDIR is obsolete, use srctree/objtree objtree := $(CURDIR) src := $(srctree) obj := $(objtree) VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) export srctree objtree VPATH TOPDIR # SUBARCH tells the usermode build what the underlying arch is. That is set # first, and if a usermode build is happening, the "ARCH=um" on the command # line overrides the setting of ARCH below. If a native build is happening, # then ARCH is assigned, getting whatever value it gets normally, and # SUBARCH is subsequently ignored. SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ ) # Cross compiling and selecting different set of gcc/bin-utils # --------------------------------------------------------------------------- # # When performing cross compilation for other architectures ARCH shall be set # to the target architecture. (See arch/* for the possibilities). # ARCH can be set during invocation of make: # make ARCH=ia64 # Another way is to have ARCH set in the environment. # The default ARCH is the host where make is executed. # CROSS_COMPILE specify the prefix used for all executables used # during compilation. Only gcc and related bin-utils executables # are prefixed with $(CROSS_COMPILE). # CROSS_COMPILE can be set on the command line # make CROSS_COMPILE=ia64-linux- # Alternatively CROSS_COMPILE can be set in the environment. # Default value for CROSS_COMPILE is not to prefix executables # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile ARCH ?= $(SUBARCH) CROSS_COMPILE ?= # Architecture as present in compile.h UTS_MACHINE := $(ARCH) # SHELL used by kbuild CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ else if [ -x /bin/bash ]; then echo /bin/bash; \ else echo sh; fi ; fi) HOSTCC = gcc HOSTCXX = g++ HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \ -Wno-unused -Wno-format-security -U_FORTIFY_SOURCE HOSTCXXFLAGS = -O2 # Decide whether to build built-in, modular, or both. # Normally, just do built-in. KBUILD_MODULES := KBUILD_BUILTIN := 1 # If we have only "make modules", don't compile built-in objects. # When we're building modules with modversions, we need to consider # the built-in objects during the descend as well, in order to # make sure the checksums are uptodate before we record them. ifeq ($(MAKECMDGOALS),modules) KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) endif # If we have "make modules", compile modules # in addition to whatever we do anyway. # Just "make" or "make all" shall build modules as well ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) KBUILD_MODULES := 1 endif ifeq ($(MAKECMDGOALS),) KBUILD_MODULES := 1 endif export KBUILD_MODULES KBUILD_BUILTIN export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD # Beautify output # --------------------------------------------------------------------------- # # Normally, we echo the whole command before executing it. By making # that echo $($(quiet)$(cmd)), we now have the possibility to set # $(quiet) to choose other forms of output instead, e.g. # # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< # # If $(quiet) is empty, the whole command will be printed. # If it is set to "quiet_", only the short version will be printed. # If it is set to "silent_", nothing wil be printed at all, since # the variable $(silent_cmd_cc_o_c) doesn't exist. # # A simple variant is to prefix commands with $(Q) - that's useful # for commands that shall be hidden in non-verbose mode. # # $(Q)ln $@ :< # # If KBUILD_VERBOSE equals 0 then the above command will be hidden. # If KBUILD_VERBOSE equals 1 then the above command is displayed. ifeq ($(KBUILD_VERBOSE),1) quiet = Q = else quiet=quiet_ Q = @ endif # If the user is running make -s (silent mode), suppress echoing of # commands ifneq ($(findstring s,$(MAKEFLAGS)),) quiet=silent_ endif export quiet Q KBUILD_VERBOSE # Look for make include files relative to root of kernel src MAKEFLAGS += --include-dir=$(srctree) # We need some generic definitions include $(srctree)/scripts/Kbuild.include # For maximum performance (+ possibly random breakage, uncomment # the following) #MAKEFLAGS += -rR # Make variables (CC, etc...) AS = $(CROSS_COMPILE)as LD = $(CROSS_COMPILE)ld CC = $(CROSS_COMPILE)gcc CPP = $(CC) -E AR = $(CROSS_COMPILE)ar NM = $(CROSS_COMPILE)nm STRIP = $(CROSS_COMPILE)strip OBJCOPY = $(CROSS_COMPILE)objcopy OBJDUMP = $(CROSS_COMPILE)objdump AWK = awk GENKSYMS = scripts/genksyms/genksyms DEPMOD = /sbin/depmod KALLSYMS = scripts/kallsyms PERL = perl CHECK = sparse CFLAGS_KERNEL = AFLAGS_KERNEL = # Use V3_INCLUDE when you must reference the include/ directory. # Needed to be compatible with the O= option V3_INCLUDE := -Ipalacios/include \ $(if $(KBUILD_SRC),-I$(srctree)/palacios/include) \ -include palacios/include/autoconf.h CPPFLAGS := $(V3_INCLUDE) -D__V3VEE__ CFLAGS := -fno-stack-protector -Wall -O -Werror -fPIC -mno-red-zone -fno-common LDFLAGS := --whole-archive ifeq ($(call cc-option-yn, -fgnu89-inline),y) CFLAGS += -fgnu89-inline endif AFLAGS := # Read KERNELRELEASE from .kernelrelease (if it exists) #KERNELRELEASE = $(shell cat .kernelrelease 2> /dev/null) #KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION) export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION \ ARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC \ CPP AR NM STRIP OBJCOPY OBJDUMP MAKE AWK GENKSYMS PERL UTS_MACHINE \ HOSTCXX HOSTCXXFLAGS CHECK export CPPFLAGS NOSTDINC_FLAGS V3_INCLUDE OBJCOPYFLAGS LDFLAGS export CFLAGS CFLAGS_KERNEL export AFLAGS AFLAGS_KERNEL # When compiling out-of-tree modules, put MODVERDIR in the module # tree rather than in the kernel tree. The kernel tree might # even be read-only. export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions # Files to ignore in find ... statements RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git # =========================================================================== # Rules shared between *config targets and build targets # Basic helpers built in scripts/ PHONY += scripts_basic scripts_basic: $(Q)$(MAKE) $(build)=scripts/basic # To avoid any implicit rule to kick in, define an empty command. scripts/basic/%: scripts_basic ; PHONY += outputmakefile # outputmakefile generates a Makefile in the output directory, if using a # separate output directory. This allows convenient use of make in the # output directory. outputmakefile: ifneq ($(KBUILD_SRC),) $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) endif # To make sure we do not include .config for any of the *config targets # catch them early, and hand them over to scripts/kconfig/Makefile # It is allowed to specify more targets when calling make, including # mixing *config targets and build targets. # For example 'make oldconfig all'. # Detect when mixed targets is specified, and make a second invocation # of make so .config is not included in this case either (for *config). no-dot-config-targets := clean mrproper distclean \ cscope TAGS tags help %docs check% config-targets := 0 mixed-targets := 0 dot-config := 1 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) dot-config := 0 endif endif ifeq ($(KBUILD_EXTMOD),) ifneq ($(filter config %config,$(MAKECMDGOALS)),) config-targets := 1 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) mixed-targets := 1 endif endif endif ifeq ($(mixed-targets),1) # =========================================================================== # We're called with mixed targets (*config and build targets). # Handle them one by one. %:: FORCE $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ else ifeq ($(config-targets),1) # =========================================================================== # *config targets only - make sure prerequisites are updated, and descend # in scripts/kconfig to make the *config target # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. # KBUILD_DEFCONFIG may point out an alternative default configuration # used for 'make defconfig' include $(srctree)/Makefile.$(ARCH) export KBUILD_DEFCONFIG config %config: scripts_basic outputmakefile FORCE $(Q)mkdir -p palacios/include/config $(Q)$(MAKE) $(build)=scripts/kconfig $@ # $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease else # =========================================================================== # Build targets only - this includes Palacios arch specific targets, clean # targets and others. In general all targets except *config targets. # Additional helpers built in scripts/ # Carefully list dependencies so we do not try to build scripts twice # in parrallel PHONY += scripts scripts: scripts_basic palacios/include/config/MARKER $(Q)$(MAKE) $(build)=$(@) scripts_basic: palacios/include/autoconf.h # Objects we will link into palacios / subdirs we need to visit #drivers-y := drivers/ #net-y := net/ #core-y := usr/ core-y := palacios/src/palacios/ libs-y := palacios/lib/$(ARCH)/ devices-y := palacios/src/devices/ modules-y := modules/ ifeq ($(dot-config),1) # In this section, we need .config # Read in dependencies to all Kconfig* files, make sure to run # oldconfig if changes are detected. -include .kconfig.d include .config # 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 .kconfig.d: ; # If .config is newer than palacios/include/autoconf.h, someone tinkered # with it and forgot to run make oldconfig. # If kconfig.d is missing then we are probarly in a cleaned tree so # we execute the config step to be sure to catch updated Kconfig files palacios/include/autoconf.h: .kconfig.d .config $(Q)mkdir -p palacios/include/config $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig else # Dummy target needed, because used as prerequisite palacios/include/autoconf.h: ; endif DEFAULT_EXTRA_TARGETS= # 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 palacios but it is usually overriden in the arch makefile all: palacios $(DEFAULT_EXTRA_TARGETS) ifdef CONFIG_FRAME_POINTER CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,) else CFLAGS += -fomit-frame-pointer endif ifdef CONFIG_UNWIND_INFO CFLAGS += -fasynchronous-unwind-tables endif ifdef CONFIG_DEBUG_INFO CFLAGS += -g endif include $(srctree)/Makefile.$(ARCH) # arch Makefile may override CC so keep this after arch Makefile is included NOSTDINC_FLAGS += # disable pointer signedness warnings in gcc 4.0 CFLAGS += $(call cc-option,-Wno-pointer-sign,) # Default kernel image to build when no specific target is given. # KBUILD_IMAGE may be overruled on the commandline or # set in the environment # Also any assignments in /Makefile.$(ARCH) take precedence over # this default value export KBUILD_IMAGE ?= palacios # # 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 ?= /build palacios-dirs := $(patsubst %/,%,$(filter %/, \ $(core-y) $(devices-y) $(libs-y)) $(modules-y)) #palacios-alldirs := $(sort $(palacios-dirs) $(patsubst %/,%,$(filter %/, \ # $(core-n) $(core-) $(devices-n) $(devices-) \ # $(libs-n) $(libs-)))) palacios-cleandirs := $(sort $(palacios-dirs) $(patsubst %/,%,$(filter %/, \ $(core-n) $(core-) $(devices-n) $(devices-) $(modules-n) $(modules-)))) core-y := $(patsubst %/, %/built-in.o, $(core-y)) devices-y := $(patsubst %/, %/built-in.o, $(devices-y)) libs-y := $(patsubst %/, %/built-in.o, $(libs-y)) modules-y := $(patsubst %/, %/built-in.o, $(modules-y)) #core-y := $(patsubst %/, %/lib.a, $(core-y)) #devices-y := $(patsubst %/, %/lib.a, $(devices-y)) # $(patsubst %/, %/built-in.o, $(libs-y)) # Build palacios # --------------------------------------------------------------------------- # Palacios is build from the objects selected by $(palacios-init) and # $(palacios). Most are built-in.o files from top-level directories # in the kernel tree, others are specified in Makefile. # Ordering when linking is important, and $(palacios-init) must be first. # # palacios # ^ # | # +--< $(palacios) # | +--< devices/built-in.o + more # palacios := $(core-y) $(devices-y) $(libs-y) $(modules-y) # Rule to link palacios - also used during CONFIG_KALLSYMS # May be overridden by /Makefile.$(ARCH) quiet_cmd_palacios__ ?= AR $@ cmd_palacios__ ?= $(AR) rcs $@ $^ # Generate new palacios version quiet_cmd_palacios_version = GEN .version cmd_palacios_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; # Link of palacios # If CONFIG_KALLSYMS is set .version is already updated # Generate System.map and verify that the content is consistent # Use + in front of the palacios_version rule to silent warning with make -j2 # First command is ':' to allow us to use + in front of the rule define rule_palacios__ : $(call cmd,palacios__) $(Q)echo 'cmd_$@ := $(cmd_palacios__)' > $(@D)/.$(@F).cmd endef # palacios image - including updated kernel symbols libv3vee.a: $(palacios) $(call if_changed_rule,palacios__) palacios: libv3vee.a palacios.asm: palacios $(OBJDUMP) --disassemble $< > $@ # The actual objects are generated when descending, # make sure no implicit rule kicks in $(sort $(palacios)) : $(palacios-dirs) ; # Handle descending into subdirectories listed in $(palacios-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 += $(palacios-dirs) $(palacios-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 arch 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 $(srctree) prepare3: ifneq ($(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; endif # prepare2 creates a makefile if using a separate output directory prepare2: prepare3 outputmakefile prepare1: prepare2 palacios/include/config/MARKER archprepare: prepare1 scripts_basic prepare0: archprepare FORCE $(Q)$(MAKE) $(build)=. # All the preparing.. prepare prepare-all: prepare0 palacios/include/config/MARKER: scripts/basic/split-include palacios/include/autoconf.h @echo ' SPLIT palacios/include/autoconf.h -> palacios/include/config/*' @scripts/basic/split-include palacios/include/autoconf.h palacios/include/config @touch $@ # --------------------------------------------------------------------------- PHONY += depend dep depend dep: @echo '*** Warning: make $@ is unnecessary now.' ### # 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 += v3vee.asm \ .tmp_version .tmp_palacios* # Directories & files removed with 'make mrproper' MRPROPER_DIRS += palacios/include/config MRPROPER_FILES += .config .config.old .version .old_version \ palacios/include/autoconf.h \ tags TAGS cscope* # \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ # 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) $(palacios-cleandirs)) 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) \ \( -name 'lib' \) -prune -o \ \( -name '*.[oas]' -o -name '.*.cmd' \ -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \) \ -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) mrproper-dirs := $(addprefix _mrproper_, 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 %pkg: FORCE $(Q)$(MAKE) $(build)=$(package-dir) $@ rpm: FORCE $(Q)$(MAKE) $(build)=$(package-dir) $@ # Brief documentation of the typical targets used # --------------------------------------------------------------------------- help: @echo 'Cleaning targets:' @echo ' clean - remove most generated files but keep the config' @echo ' mrproper - remove all generated files + config + various backup files' @echo '' @echo 'Configuration targets:' @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help @echo '' @echo 'Other generic targets:' @echo ' all - Build all targets marked with [*]' @echo '* palacios - Build the palacios VMM' @echo ' dir/ - Build all files in dir and below' @echo ' dir/file.[ois] - Build specified target only' @echo ' dir/file.ko - Build module including final link' @echo ' rpm - Build a kernel as an RPM package' @echo ' tags/TAGS - Generate tags file for editors' @echo ' cscope - Generate cscope index' @echo '' @echo 'Kernel packaging:' @$(MAKE) $(build)=$(package-dir) 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 '' @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 $@ # 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)palacios $(RCS_FIND_IGNORE) \ \( -name lib \) -prune -o \ -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,__acquires,__releases \ -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ --extra=+f --c-kinds=+px"`; \ $(all-sources) | xargs etags $$ETAGSF -a endef TAGS: FORCE $(call cmd,TAGS) quiet_cmd_tags = MAKE $@ define cmd_tags rm -f $@; \ CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \ echo "-I __initdata,__exitdata,__acquires,__releases \ -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ --extra=+f --c-kinds=+px"`; \ $(all-sources) | xargs ctags $$CTAGSF -a endef tags: FORCE $(call cmd,tags) # Scripts to check various things for consistency # --------------------------------------------------------------------------- endif #ifeq ($(config-targets),1) endif #ifeq ($(mixed-targets),1) # Single targets # --------------------------------------------------------------------------- # Single targets are compatible with: # - build whith mixed source and output # - build with separate output dir 'make O=...' # - external modules # # target-dir => where to store outputfile # build-dir => directory in kernel source tree to use build-dir = $(patsubst %/,%,$(dir $@)) target-dir = $(dir $@) %.s: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.i: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.o: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.lst: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.s: %.S prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) %.o: %.S prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) # Modules / %/: prepare scripts FORCE $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ $(build)=$(build-dir) %.ko: prepare scripts FORCE $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ $(build)=$(build-dir) $(@:.ko=.o) $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost # 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 the O variable for user and init_task (not set by kbuild?) user init_task: O:=$(if $O,$O,$(objtree)) # Build Palacios user-space libraries and example programs user: FORCE if [ ! -d $O/$@ ]; then mkdir $O/$@; fi $(MAKE) \ -C $(src)/$@ \ O=$O/$@ \ src=$(src)/$@ \ all PHONY += FORCE FORCE: # Declare the contents of the .PHONY variable as phony. We keep that # information in a variable se we can use it in if_changed and friends. .PHONY: $(PHONY)