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Gentoo's Bugzilla – Attachment 507644 Details for
Bug 639468
[musl overlay] sys-apps/busybox - fails to build with distcc: munges CFLAGS, breaks musl builds due to lack of -fPIC
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Top-level Makefile
file_639468.txt (text/plain), 43.02 KB, created by
Michael 'veremitz' Everitt
on 2017-12-02 03:56:23 UTC
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Description:
Top-level Makefile
Filename:
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Creator:
Michael 'veremitz' Everitt
Created:
2017-12-02 03:56:23 UTC
Size:
43.02 KB
patch
obsolete
>VERSION = 1 >PATCHLEVEL = 25 >SUBLEVEL = 1 >EXTRAVERSION = >NAME = Unnamed > ># *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 busybox), 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 >ifeq ($(KBUILD_EXTMOD),) >_all: all >else >_all: modules >endif > >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 > > ># 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 $(CROSS_COMPILE). ># CROSS_COMPILE can be set on the command line ># make CROSS_COMPILE=ia64-linux- ># Alternatively CROSS_COMPILE can be set in the environment. ># Default value for CROSS_COMPILE is not to prefix executables ># Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile > >CROSS_COMPILE ?= x86_64-gentoo-linux-musl- ># bbox: we may have CONFIG_CROSS_COMPILER_PREFIX in .config, ># and it has not been included yet... thus using an awkward syntax. >ifeq ($(CROSS_COMPILE),) >CROSS_COMPILE := x86_64-gentoo-linux-musl- >CROSS_COMPILE := x86_64-gentoo-linux-musl- >CROSS_COMPILE := x86_64-gentoo-linux-musl- >#") >endif > ># 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. > >ifneq ($(CROSS_COMPILE),) >SUBARCH := $(shell echo $(CROSS_COMPILE) | cut -d- -f1) >else >SUBARCH := $(shell uname -m) >endif >SUBARCH := $(shell echo $(SUBARCH) | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ > -e s/arm.*/arm/ -e s/sa110/arm/ \ > -e s/s390x/s390/ -e s/parisc64/parisc/ \ > -e s/ppc.*/powerpc/ -e s/mips.*/mips/ ) > >ARCH ?= $(SUBARCH) > ># 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) > ># 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 $(CONFIG_MODVERSIONS),1) >endif > ># If we have "make <whatever> modules", compile modules ># in addition to whatever we do anyway. ># Just "make" or "make all" shall build modules as well > >ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) > KBUILD_MODULES := 1 >endif > >ifeq ($(MAKECMDGOALS),) > KBUILD_MODULES := 1 >endif > >export KBUILD_MODULES KBUILD_BUILTIN >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) > >HOSTCC = x86_64-gentoo-linux-musl-gcc >HOSTCXX = g++ >HOSTCFLAGS := >HOSTCXXFLAGS := ># We need some generic definitions >include $(srctree)/scripts/Kbuild.include > >HOSTCFLAGS += $(call hostcc-option,-Wall -Wstrict-prototypes -O2 -fomit-frame-pointer,) >HOSTCXXFLAGS += -O2 > ># For maximum performance (+ possibly random breakage, uncomment ># the following) > >MAKEFLAGS += -rR > ># Make variables (CC, etc...) > >AS = $(CROSS_COMPILE)as >CC = x86_64-gentoo-linux-musl-gcc >LD = $(CC) -nostdlib >CPP = $(CC) -E >AR = x86_64-gentoo-linux-musl-ar >NM = $(CROSS_COMPILE)nm >STRIP = $(CROSS_COMPILE)strip >OBJCOPY = $(CROSS_COMPILE)objcopy >OBJDUMP = $(CROSS_COMPILE)objdump >PKG_CONFIG ?= x86_64-gentoo-linux-musl-pkg-config >AWK = awk >GENKSYMS = scripts/genksyms/genksyms >DEPMOD = /sbin/depmod >KALLSYMS = scripts/kallsyms >PERL = perl >CHECK = sparse > >CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise $(CF) >MODFLAGS = -DMODULE >CFLAGS_MODULE = $(MODFLAGS) >AFLAGS_MODULE = $(MODFLAGS) >LDFLAGS_MODULE = -r >CFLAGS_KERNEL = >AFLAGS_KERNEL = > > ># Use LINUXINCLUDE when you must reference the include/ directory. ># Needed to be compatible with the O= option >CFLAGS := $(CFLAGS) ># Added only to final link stage of busybox binary >CFLAGS_busybox := $(CFLAGS_busybox) >CPPFLAGS := $(CPPFLAGS) >AFLAGS := $(AFLAGS) >LDFLAGS := $(LDFLAGS) >LDLIBS := > ># 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 LDFLAGS_MODULE CHECK CHECKFLAGS > >export CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS >export CFLAGS CFLAGS_KERNEL CFLAGS_MODULE >export AFLAGS AFLAGS_KERNEL AFLAGS_MODULE >export FLTFLAGS > ># 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 ; > ># This target generates Kbuild's and Config.in's from *.c files >PHONY += gen_build_files >gen_build_files: $(wildcard $(srctree)/*/*.c) $(wildcard $(srctree)/*/*/*.c) > $(Q)$(srctree)/scripts/gen_build_files.sh $(srctree) $(objtree) > ># bbox: we have helpers in applets/ ># we depend on scripts_basic, since scripts/basic/fixdep ># must be built before any other host prog >PHONY += applets_dir >applets_dir: scripts_basic gen_build_files > $(Q)$(MAKE) $(build)=applets > >applets/%: applets_dir ; > >PHONY += outputmakefile ># outputmakefile generates a Makefile in the output directory, if using a ># separate output directory. This allows convenient use of make in the ># output directory. >outputmakefile: >ifneq ($(KBUILD_SRC),) > $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ > $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) >endif > ># To make sure we do not include .config for any of the *config targets ># catch them early, and hand them over to scripts/kconfig/Makefile ># It is allowed to specify more targets when calling make, including ># mixing *config targets and build targets. ># For example 'make oldconfig all'. ># Detect when mixed targets is specified, and make a second invocation ># of make so .config is not included in this case either (for *config). > >no-dot-config-targets := clean mrproper distclean \ > cscope TAGS tags help %docs >#bbox# check% is removed from above > >config-targets := 0 >mixed-targets := 0 >dot-config := 1 > >ifneq ($(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 $(srctree)/arch/$(ARCH)/Makefile >export KBUILD_DEFCONFIG > >config: scripts_basic outputmakefile gen_build_files FORCE > $(Q)mkdir -p include > $(Q)$(MAKE) $(build)=scripts/kconfig $@ > $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease > >%config: scripts_basic outputmakefile gen_build_files FORCE > $(Q)mkdir -p include > $(Q)$(MAKE) $(build)=scripts/kconfig $@ > $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease > >else ># =========================================================================== ># Build targets only - this includes busybox, arch specific targets, clean ># targets and others. In general all targets except *config targets. > >ifeq ($(KBUILD_EXTMOD),) ># Additional helpers built in scripts/ ># Carefully list dependencies so we do not try to build scripts twice ># in parallel >PHONY += scripts >scripts: gen_build_files scripts_basic include/config/MARKER > $(Q)$(MAKE) $(build)=$(@) > >scripts_basic: include/autoconf.h > ># Objects we will link into busybox / subdirs we need to visit >core-y := \ > applets/ \ > >libs-y := \ > archival/ \ > archival/libarchive/ \ > console-tools/ \ > coreutils/ \ > coreutils/libcoreutils/ \ > debianutils/ \ > e2fsprogs/ \ > editors/ \ > findutils/ \ > init/ \ > libbb/ \ > libpwdgrp/ \ > loginutils/ \ > mailutils/ \ > miscutils/ \ > modutils/ \ > networking/ \ > networking/libiproute/ \ > networking/udhcp/ \ > printutils/ \ > procps/ \ > runit/ \ > selinux/ \ > shell/ \ > sysklogd/ \ > util-linux/ \ > util-linux/volume_id/ \ > >endif # KBUILD_EXTMOD > >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: ; > ># Now we can define CFLAGS etc according to .config >include $(srctree)/Makefile.flags > ># If .config is newer than 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 >include/autoconf.h: .kconfig.d .config $(wildcard $(srctree)/*/*.c) $(wildcard $(srctree)/*/*/*.c) | gen_build_files > $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig > >include/usage.h: gen_build_files > >else ># Dummy target needed, because used as prerequisite >include/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 busybox but it is usually overridden in the arch makefile >all: busybox doc > >-include $(srctree)/arch/$(ARCH)/Makefile > ># arch Makefile may override CC so keep this after arch Makefile is included >#bbox# NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) >CHECKFLAGS += $(NOSTDINC_FLAGS) > ># Default kernel image to build when no specific target is given. ># KBUILD_IMAGE may be overruled on the commandline or ># set in the environment ># Also any assignments in arch/$(ARCH)/Makefile take precedence over ># this default value >export KBUILD_IMAGE ?= busybox > ># ># INSTALL_PATH specifies where to place the updated kernel and system map ># images. Default is /boot, but you can set it to other values >export INSTALL_PATH ?= /boot > ># ># INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory ># relocations required by build roots. This is not defined in the ># makefile but the argument can be passed to make if needed. ># > >MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) >export MODLIB > > >ifeq ($(KBUILD_EXTMOD),) >busybox-dirs := $(patsubst %/,%,$(filter %/, $(core-y) $(core-m) $(libs-y) $(libs-m))) > >busybox-alldirs := $(sort $(busybox-dirs) $(patsubst %/,%,$(filter %/, \ > $(core-n) $(core-) $(libs-n) $(libs-) \ > ))) > >core-y := $(patsubst %/, %/built-in.o, $(core-y)) >libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) >libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) >libs-y := $(libs-y1) $(libs-y2) > ># Build busybox ># --------------------------------------------------------------------------- ># busybox is build from the objects selected by $(busybox-init) and ># $(busybox-main). Most are built-in.o files from top-level directories ># in the kernel tree, others are specified in arch/$(ARCH)Makefile. ># Ordering when linking is important, and $(busybox-init) must be first. ># ># busybox ># ^ ># | ># +-< $(busybox-init) ># | +--< init/version.o + more ># | ># +--< $(busybox-main) ># | +--< driver/built-in.o mm/built-in.o + more ># | ># +-< kallsyms.o (see description in CONFIG_KALLSYMS section) ># ># busybox version (uname -v) cannot be updated during normal ># descending-into-subdirs phase since we do not yet know if we need to ># update busybox. ># Therefore this step is delayed until just before final link of busybox - ># 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 > >busybox-all := $(core-y) $(libs-y) > ># Rule to link busybox - also used during CONFIG_KALLSYMS ># May be overridden by arch/$(ARCH)/Makefile >quiet_cmd_busybox__ ?= LINK $@ > cmd_busybox__ ?= $(srctree)/scripts/trylink \ > "$@" \ > "$(CC)" \ > "$(CFLAGS) $(CFLAGS_busybox)" \ > "$(LDFLAGS) $(EXTRA_LDFLAGS)" \ > "$(core-y)" \ > "$(libs-y)" \ > "$(LDLIBS)" \ > && $(srctree)/scripts/generate_BUFSIZ.sh --post include/common_bufsiz.h > ># Generate System.map >quiet_cmd_sysmap = SYSMAP > cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap > ># Link of busybox ># If CONFIG_KALLSYMS is set .version is already updated ># Generate System.map and verify that the content is consistent ># Use + in front of the busybox_version rule to silent warning with make -j2 ># First command is ':' to allow us to use + in front of the rule >define rule_busybox__ > : > $(call cmd,busybox__) > $(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@F).cmd >endef > > >ifdef CONFIG_KALLSYMS ># Generate section listing all symbols and add it into busybox $(kallsyms.o) ># It's a three stage process: ># o .tmp_busybox1 has all symbols and sections, but __kallsyms is ># empty ># Running kallsyms on that gives us .tmp_kallsyms1.o with ># the right size - busybox version (uname -v) is updated during this step ># o .tmp_busybox2 now has a __kallsyms section of the right size, ># but due to the added section, some addresses have shifted. ># From here, we generate a correct .tmp_kallsyms2.o ># o The correct .tmp_kallsyms2.o is linked into the final busybox. ># o Verify that the System.map from busybox matches the map from ># .tmp_busybox2, just in case we did not generate kallsyms correctly. ># o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using ># .tmp_busybox3 and .tmp_kallsyms3.o. This is only meant as a ># temporary bypass to allow the kernel to be built while the ># maintainers work out what went wrong with kallsyms. > >ifdef CONFIG_KALLSYMS_EXTRA_PASS >last_kallsyms := 3 >else >last_kallsyms := 2 >endif > >kallsyms.o := .tmp_kallsyms$(last_kallsyms).o > >define verify_kallsyms > $(Q)$(if $($(quiet)cmd_sysmap), \ > echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ > $(cmd_sysmap) .tmp_busybox$(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 busybox 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 = $(cmd_busybox__) >define rule_ksym_ld > : > +$(call cmd,busybox_version) > $(call cmd,busybox__) > $(Q)echo 'cmd_$@ := $(cmd_busybox__)' > $(@D)/.$(@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_busybox% $(KALLSYMS) > $(call cmd,kallsyms) > ># .tmp_busybox1 must be complete except kallsyms, so update busybox version >.tmp_busybox1: $(busybox-lds) $(busybox-all) FORCE > $(call if_changed_rule,ksym_ld) > >.tmp_busybox2: $(busybox-lds) $(busybox-all) .tmp_kallsyms1.o FORCE > $(call if_changed,busybox__) > >.tmp_busybox3: $(busybox-lds) $(busybox-all) .tmp_kallsyms2.o FORCE > $(call if_changed,busybox__) > ># Needs to visit scripts/ before $(KALLSYMS) can be used. >$(KALLSYMS): scripts ; > ># Generate some data for debugging strange kallsyms problems >debug_kallsyms: .tmp_map$(last_kallsyms) > >.tmp_map%: .tmp_busybox% FORCE > ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ > >.tmp_map3: .tmp_map2 > >.tmp_map2: .tmp_map1 > >endif # ifdef CONFIG_KALLSYMS > ># busybox image - including updated kernel symbols >busybox_unstripped: $(busybox-all) FORCE > $(call if_changed_rule,busybox__) > $(Q)rm -f .old_version > >busybox: busybox_unstripped >ifeq ($(SKIP_STRIP),y) > $(Q)cp $< $@ >else > $(Q)$(STRIP) -s --remove-section=.note --remove-section=.comment \ > busybox_unstripped -o $@ ># strip is confused by PIE executable and does not set exec bits > $(Q)chmod a+x $@ >endif > ># The actual objects are generated when descending, ># make sure no implicit rule kicks in >$(sort $(busybox-all)): $(busybox-dirs) ; > ># Handle descending into subdirectories listed in $(busybox-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 += $(busybox-dirs) >$(busybox-dirs): prepare scripts > $(Q)$(MAKE) $(build)=$@ > ># Build the kernel release string ># The KERNELRELEASE is stored in a file named .kernelrelease ># to be used when executing for example make install or make modules_install ># ># Take the contents of any files called localversion* and the config ># variable CONFIG_LOCALVERSION and append them to KERNELRELEASE. ># LOCALVERSION from the command line override all of this > >nullstring := >space := $(nullstring) # end of line > >___localver = $(objtree)/localversion* $(srctree)/localversion* >__localver = $(sort $(wildcard $(___localver))) ># skip backup files (containing '~') >_localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f))) > >localver = $(subst $(space),, \ > $(shell cat /dev/null $(_localver)) \ > $(patsubst "%",%,$(CONFIG_LOCALVERSION))) > ># If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called ># and if the SCM is know a tag from the SCM is appended. ># The appended tag is determinded by the SCM used. ># ># Currently, only git is supported. ># Other SCMs can edit scripts/setlocalversion and add the appropriate ># checks as needed. >ifdef _BB_DISABLED_CONFIG_LOCALVERSION_AUTO > _localver-auto = $(shell $(CONFIG_SHELL) \ > $(srctree)/scripts/setlocalversion $(srctree)) > localver-auto = $(LOCALVERSION)$(_localver-auto) >endif > >localver-full = $(localver)$(localver-auto) > ># Store (new) KERNELRELASE string in .kernelrelease >kernelrelease = $(KERNELVERSION)$(localver-full) >.kernelrelease: FORCE > $(Q)rm -f $@ > $(Q)echo $(kernelrelease) > $@ > > ># 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 $(srctree) ># 2) Create the include2 directory, used for the second asm symlink >prepare3: .kernelrelease >ifneq ($(KBUILD_SRC),) > @echo ' Using $(srctree) as source for busybox' > $(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/config/MARKER >ifneq ($(KBUILD_MODULES),) > $(Q)mkdir -p $(MODVERDIR) > $(Q)rm -f $(MODVERDIR)/* >endif > >archprepare: prepare1 scripts_basic applets_dir > >prepare0: archprepare FORCE > $(Q)$(MAKE) $(build)=. > ># All the preparing.. >prepare prepare-all: prepare0 > ># Leave this as default for preprocessing busybox.lds.S, which is now ># done in arch/$(ARCH)/kernel/Makefile > >export CPPFLAGS_busybox.lds += -P -C -U$(ARCH) > ># 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. > >#bbox# include/asm: >#bbox# @echo ' SYMLINK $@ -> include/asm-$(ARCH)' >#bbox# $(Q)if [ ! -d include ]; then mkdir -p include; fi; >#bbox# @ln -fsn asm-$(ARCH) $@ > ># Split autoconf.h into include/linux/config/* >quiet_cmd_gen_bbconfigopts = GEN include/bbconfigopts.h > cmd_gen_bbconfigopts = $(srctree)/scripts/mkconfigs include/bbconfigopts.h include/bbconfigopts_bz2.h >quiet_cmd_gen_common_bufsiz = GEN include/common_bufsiz.h > cmd_gen_common_bufsiz = $(srctree)/scripts/generate_BUFSIZ.sh include/common_bufsiz.h >quiet_cmd_split_autoconf = SPLIT include/autoconf.h -> include/config/* > cmd_split_autoconf = scripts/basic/split-include include/autoconf.h include/config >#bbox# piggybacked generation of few .h files >include/config/MARKER: scripts/basic/split-include include/autoconf.h > $(call cmd,split_autoconf) > $(call cmd,gen_bbconfigopts) > $(call cmd,gen_common_bufsiz) > @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 > ># --------------------------------------------------------------------------- > >PHONY += depend dep >depend dep: > @echo '*** Warning: make $@ is unnecessary now.' > ># --------------------------------------------------------------------------- ># Modules > >ifdef _BB_DISABLED_CONFIG_MODULES > ># By default, build modules as well > >all: modules > ># Build modules > >PHONY += modules >modules: $(busybox-dirs) $(if $(KBUILD_BUILTIN),busybox) > @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 $(srctree)/scripts/Makefile.modinst > ># If System.map exists, run depmod. This deliberately does not have a ># dependency on System.map since that would run the dependency tree on ># busybox. This depmod is only for convenience to give the initial ># boot a modules.dep even before / is mounted read-write. However the ># boot script depmod is the master version. >ifeq "$(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 busybox 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) _install 0_lib >CLEAN_FILES += busybox busybox_unstripped* busybox.links \ > System.map .kernelrelease \ > .tmp_kallsyms* .tmp_version .tmp_busybox* .tmp_System.map > ># Directories & files removed with 'make mrproper' >MRPROPER_DIRS += include/config include2 >MRPROPER_FILES += .config .config.old include/asm .version .old_version \ > include/NUM_APPLETS.h \ > include/common_bufsiz.h \ > include/autoconf.h \ > include/bbconfigopts.h \ > include/bbconfigopts_bz2.h \ > include/usage_compressed.h \ > include/applet_tables.h \ > include/applets.h \ > include/usage.h \ > applets/usage \ > .kernelrelease Module.symvers tags TAGS cscope* \ > busybox_old > ># 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) $(busybox-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 > >PHONY += doc-clean >doc-clean: rm-files := docs/busybox.pod \ > docs/BusyBox.html docs/busybox.1 docs/BusyBox.txt >doc-clean: > $(call cmd,rmfiles) > ># mrproper - Delete all generated files, including .config ># >mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) >mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) >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) > @find . -name Config.src | sed 's/.src$$/.in/' | xargs -r rm -f > @find . -name Kbuild.src | sed 's/.src$$//' | xargs -r rm -f > ># distclean ># >PHONY += distclean > >distclean: mrproper > @find $(srctree) $(RCS_FIND_IGNORE) \ > \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ > -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ > -o -name '.*.rej' -o -name '*.tmp' -o -size 0 \ > -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ > -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 ># --------------------------------------------------------------------------- > >boards := $(wildcard $(srctree)/configs/*_defconfig) >boards := $(notdir $(boards)) > >-include $(srctree)/Makefile.help > ># 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) > $(Q)rm -f $(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: _emodinst_ _emodinst_post > >install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) >PHONY += _emodinst_ >_emodinst_: > $(Q)mkdir -p $(MODLIB)/$(install-dir) > $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst > ># Run depmod only is we have System.map and depmod is executable >quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) > cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \ > $(DEPMOD) -ae -F System.map \ > $(if $(strip $(INSTALL_MOD_PATH)), \ > -b $(INSTALL_MOD_PATH) -r) \ > $(KERNELRELEASE); \ > fi > >PHONY += _emodinst_post >_emodinst_post: _emodinst_ > $(call cmd,depmod) > >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 > ># Dummies... >PHONY += prepare scripts >prepare: ; >scripts: ; >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 -regex '.*\.[ch]$$' ) >endef > >quiet_cmd_cscope-file = FILELST cscope.files > cmd_cscope-file = (echo \-k; echo \-q; $(all-sources)) > cscope.files > >quiet_cmd_cscope = MAKE cscope.out > cmd_cscope = cscope -b > >cscope: FORCE > $(call cmd,cscope-file) > $(call cmd,cscope) > >quiet_cmd_TAGS = MAKE $@ >define cmd_TAGS > rm -f $@; \ > ETAGSF=`etags --version | grep -i exuberant >/dev/null && \ > echo "-I __initdata,__exitdata,__acquires,__releases \ > -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \ > --extra=+f --c-kinds=+px"`; \ > $(all-sources) | xargs etags $$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 $$CTAGSF -a >endef > >tags: FORCE > $(call cmd,tags) > > ># Scripts to check various things for consistency ># --------------------------------------------------------------------------- > >includecheck: > find * $(RCS_FIND_IGNORE) \ > -name '*.[hcS]' -type f -print | sort \ > | xargs $(PERL) -w scripts/checkincludes.pl > >versioncheck: > find * $(RCS_FIND_IGNORE) \ > -name '*.[hcS]' -type f -print | sort \ > | xargs $(PERL) -w scripts/checkversion.pl > >namespacecheck: > $(PERL) $(srctree)/scripts/namespace.pl > >endif #ifeq ($(config-targets),1) >endif #ifeq ($(mixed-targets),1) > >PHONY += checkstack >checkstack: > $(OBJDUMP) -d busybox $$(find . -name '*.ko') | \ > $(PERL) $(src)/scripts/checkstack.pl $(ARCH) > >kernelrelease: > $(if $(wildcard .kernelrelease), $(Q)echo $(KERNELRELEASE), \ > $(error kernelrelease not valid - run 'make *config' to update it)) >kernelversion: > @echo $(KERNELVERSION) > ># Single targets ># --------------------------------------------------------------------------- ># Single targets are compatible with: ># - build whith mixed source and output ># - build with separate output dir 'make O=...' ># - external modules ># ># target-dir => where to store outputfile ># build-dir => directory in kernel source tree to use > >ifeq ($(KBUILD_EXTMOD),) > build-dir = $(patsubst %/,%,$(dir $@)) > target-dir = $(dir $@) >else > zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) > build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) > target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) >endif > >%.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) >/: 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 > >PHONY += FORCE >FORCE: > >-include $(srctree)/Makefile.custom > ># 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)
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bug 639468
:
507642
| 507644