Makefile - codeaurora/busybox - Gitiles

 # Makefile for busybox
 #
 # Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
 #
 # Licensed under GPLv2, see the file LICENSE in this tarball for details.
 #

 #--------------------------------------------------------------
 # You shouldn't need to mess with anything beyond this point...
 #--------------------------------------------------------------
 noconfig_targets := menuconfig config oldconfig randconfig \
 	defconfig allyesconfig allnoconfig allbareconfig \
 	clean distclean \
 	release tags

 # the toplevel sourcedir
 ifndef top_srcdir
 # make-3.79.1 didn't support MAKEFILE_LIST
 # for building out-of-tree, users of make-3.79.1 still have to pass top_srcdir=
 # to make: make -f /srcs/busybox/Makefile top_srcdir=/srcs/busybox
 ifdef MAKEFILE_LIST
 top_srcdir:=$(shell cd $(dir $(firstword $(MAKEFILE_LIST))) && pwd)
 else
 top_srcdir:=$(CURDIR)
 endif
 endif
 # toplevel directory of the object-tree
 ifndef top_builddir
 top_builddir:=$(CURDIR)
 endif

 export srctree=$(top_srcdir)
 vpath %/Config.in $(srctree)

 DIRS:=applets archival archival/libunarchive coreutils console-tools \
 	debianutils editors findutils init miscutils modutils networking \
 	networking/libiproute networking/udhcp procps loginutils shell \
 	sysklogd util-linux e2fsprogs libpwdgrp coreutils/libcoreutils libbb

 SRC_DIRS:=$(patsubst %,$(top_srcdir)/%,$(DIRS))

 # That's our default target when none is given on the command line
 .PHONY: _all

 _all: all

 # see if we are in verbose mode
 ifdef VERBOSE
   CHECK_VERBOSE := -v
   PACKAGE_BE_VERBOSE := $(VERBOSE)
 endif
 ifdef V
   CHECK_VERBOSE := -v
   PACKAGE_BE_VERBOSE := $(V)
 endif

 ifdef O
   ifeq ("$(origin O)", "command line")
     PACKAGE_OUTPUTDIR := $(shell cd $(O) && pwd)
     top_builddir := $(PACKAGE_OUTPUTDIR)
   endif
 else
 # If no alternate output-dir was specified, we build in cwd
   PACKAGE_OUTPUTDIR := $(top_builddir)
 endif

 define check_gcc
 $(if $(2),$(if $(shell $(CC) $(2) -S -o /dev/null -xc /dev/null > /dev/null 2>&1 && echo y),$(2),$(if $(3),$(3))),$(if $(3),$(3)))
 endef

 define check_ld
 $(if $(2),$(if $(shell $(LD) $(2) -o /dev/null -b binary /dev/null > /dev/null 2>&1 && echo y),$(shell echo \-Wl,$(2)),$(if $(3),$(3))),$(if $(3),$(3)))
 endef

 #######################################################################
 # make-3.79.1 doesn't support order-only prerequisites..
 ifeq ($(MAKE_VERSION),3.79.1)
 |: $(^) ;
 endif
 #######################################################################


 # Handle building out of tree
 ifneq ($(top_builddir),$(top_srcdir))
 all_tree := $(patsubst %,$(top_builddir)/%,$(DIRS) scripts scripts/config include include/config)
 $(all_tree):
 	@mkdir -p "$@"

 saved-output := $(PACKAGE_OUTPUTDIR)

 $(if $(wildcard $(PACKAGE_OUTPUTDIR)),, \
      $(error output directory "$(saved-output)" does not exist))

 .PHONY: $(filter $(noconfig_targets),$(MAKECMDGOALS))

 $(PACKAGE_OUTPUTDIR)/Rules.mak:
 	@echo > $@
 	@echo top_srcdir=$(top_srcdir) >> $@
 	@echo top_builddir=$(PACKAGE_OUTPUTDIR) >> $@
 	@echo include $$\(top_srcdir\)/Rules.mak >> $@

 $(PACKAGE_OUTPUTDIR)/Makefile:
 	@echo > $@
 	@echo top_srcdir=$(top_srcdir) >> $@
 	@echo top_builddir=$(PACKAGE_OUTPUTDIR) >> $@
 	@echo PACKAGE_SOURCEDIR='$$(top_srcdir)' >> $@
 	@echo include '$$(PACKAGE_SOURCEDIR)'/Makefile >> $@


 buildtree := $(all_tree) $(PACKAGE_OUTPUTDIR)/Rules.mak $(PACKAGE_OUTPUTDIR)/Makefile

 # We only need a copy of the Makefile for the config targets and reuse
 # the rest from the source directory, i.e. we do not cp ALL_MAKEFILES.
 scripts/config/Makefile: $(top_srcdir)/scripts/config/Makefile | $(buildtree)
 	@cp $(top_srcdir)/scripts/config/Makefile $@

 else
 all_tree := include/config
 $(all_tree):
 	@mkdir -p "$@"
 buildtree := $(all_tree)
 endif # ifneq ($(PACKAGE_OUTPUTDIR),$(top_srcdir))

 help:
 	@echo 'Cleaning:'
 	@echo '  clean			- delete temporary files created by build'
 	@echo '  distclean		- delete all non-source files (including .config)'
 	@echo
 	@echo 'Build:'
 	@echo '  all			- Executable and documentation'
 	@echo '  busybox		- the swiss-army executable'
 	@echo '  doc			- docs/BusyBox.{txt,html,1}'
 	@echo
 	@echo 'Configuration:'
 	@echo '  allnoconfig		- disable all symbols in .config'
 	@echo '  allyesconfig		- enable all symbols in .config (see defconfig)'
 	@echo '  allbareconfig		- enable all applets without any sub-features'
 	@echo '  config		- text based configurator (of last resort)'
 	@echo '  defconfig		- set .config to largest generic configuration'
 	@echo '  menuconfig		- interactive curses-based configurator'
 	@echo '  oldconfig		- resolve any unresolved symbols in .config'
 	@echo
 	@echo 'Installation:'
 	@echo '  install		- install busybox into $prefix'
 	@echo '  uninstall'
 	@echo
 	@echo 'Development:'
 	@echo '  check			- run the test suite for all applets'
 	@echo '  randconfig		- generate a random configuration'
 	@echo '  release		- create a distribution tarball'
 	@echo '  sizes			- show size of all enabled busybox symbols'
 	@echo
 	@echo 'Make flags:'
 	@echo '  V=<number>		- print verbose make output (default: unset)'
 	@echo '				  0 print CC invocations'
 	@echo '				  1'
 	@echo '				  2 also print when make enters a directory'
 	@echo '				  3 also verbosely print shell invocations'

 -include $(top_srcdir)/Rules.mak

 ifneq ($(strip $(HAVE_DOT_CONFIG)),y)
 # Default target if none was requested explicitly
 all: defconfig menuconfig ;

 ifneq ($(filter-out $(noconfig_targets),$(MAKECMDGOALS)),)
 # warn if no configuration exists and we are asked to build a non-config target
 .config:
 	@echo ""
 	@echo "No $(top_builddir)/$@ found!"
 	@echo "Please refer to 'make help', section Configuration."
 	@echo ""
 	@exit 1
 else
 # Avoid implicit rule to kick in by using an empty command
 .config: $(buildtree) ;
 endif
 endif # ifneq ($(strip $(HAVE_DOT_CONFIG)),y)


 # configuration
 # ---------------------------------------------------------------------------

 CONFIG_CONFIG_IN = $(top_srcdir)/Config.in

 scripts/config/conf: scripts/config/Makefile
 	$(Q)$(MAKE) -C scripts/config conf

 scripts/config/mconf: scripts/config/Makefile
 	$(Q)$(MAKE) -C scripts/config ncurses conf mconf

 menuconfig: scripts/config/mconf
 	@./scripts/config/mconf $(CONFIG_CONFIG_IN)

 config: scripts/config/conf
 	@./scripts/config/conf $(CONFIG_CONFIG_IN)

 oldconfig: scripts/config/conf
 	@./scripts/config/conf -o $(CONFIG_CONFIG_IN)

 randconfig: scripts/config/conf
 	@./scripts/config/conf -r $(CONFIG_CONFIG_IN)

 allyesconfig: scripts/config/conf
 	@./scripts/config/conf -y $(CONFIG_CONFIG_IN)
 	@$(SED) -i -r -e "s/^(USING_CROSS_COMPILER)=.*/# \1 is not set/" .config
 	@./scripts/config/conf -o $(CONFIG_CONFIG_IN)

 allnoconfig: scripts/config/conf
 	@./scripts/config/conf -n $(CONFIG_CONFIG_IN)

 # defconfig is allyesconfig minus any features that are specialized enough
 # or cause enough behavior change that the user really should switch them on
 # manually if that's what they want.  Sort of "maximum sane config".

 defconfig: scripts/config/conf
 	@./scripts/config/conf -y $(CONFIG_CONFIG_IN)
 	@$(SED) -i -r -e "s/^(USING_CROSS_COMPILER|CONFIG_(DEBUG.*|STATIC|SELINUX|BUILD_(AT_ONCE|LIBBUSYBOX)|FEATURE_(DEVFS|FULL_LIBBUSYBOX|SHARED_BUSYBOX|MTAB_SUPPORT|CLEAN_UP|UDHCP_DEBUG)|INSTALL_NO_USR))=.*/# \1 is not set/" .config
 	@./scripts/config/conf -o $(CONFIG_CONFIG_IN)

 allbareconfig: scripts/config/conf
 	@./scripts/config/conf -y $(CONFIG_CONFIG_IN)
 	@$(SED) -i -r -e "s/^(USING_CROSS_COMPILER|CONFIG_(DEBUG|STATIC|SELINUX|DEVFSD|NC_GAPING_SECURITY_HOLE|BUILD_AT_ONCE)).*/# \1 is not set/" .config
 	@$(SED) -i -e "/FEATURE/s/=.*//;/^[^#]/s/.*FEATURE.*/# \0 is not set/;" .config
 	@echo "CONFIG_FEATURE_BUFFERS_GO_ON_STACK=y" >> .config
 	@./scripts/config/conf -o $(CONFIG_CONFIG_IN)

 ifeq ($(strip $(HAVE_DOT_CONFIG)),y)

 # Load all Config.in
 -include $(top_builddir)/.config.cmd

 endif # ifeq ($(strip $(HAVE_DOT_CONFIG)),y)

 include $(patsubst %,%/Makefile.in,$(SRC_DIRS))

 ifeq ($(strip $(HAVE_DOT_CONFIG)),y)
 # Finally pull in the dependencies (headers and other includes) of the
 # individual object files
 -include $(top_builddir)/.depend

 $(top_builddir)/applets/applets.o: $(top_builddir)/.config
 # Everything is set.

 all: busybox busybox.links doc ;

 # Two modes of operation: legacy and IMA
 # Legacy mode builds each object through an individual invocation of CC
 # IMA compiles all sources at once (aka IPO aka IPA etc.)

 ifeq ($(strip $(CONFIG_BUILD_AT_ONCE)),y)
 libraries-y:=
 # Which parts of the internal libs are requested?
 # Per default we only want what was actually selected.
 # -a denotes all while -y denotes the selected ones.
 ifeq ($(strip $(CONFIG_FEATURE_FULL_LIBBUSYBOX)),y)
 LIBRARY_DEFINE:=$(LIBRARY_DEFINE-a)
 LIBRARY_SRC   :=$(LIBRARY_SRC-a)
 else # CONFIG_FEATURE_FULL_LIBBUSYBOX
 LIBRARY_DEFINE:=$(LIBRARY_DEFINE-y)
 LIBRARY_SRC   :=$(LIBRARY_SRC-y)
 endif # CONFIG_FEATURE_FULL_LIBBUSYBOX
 APPLET_SRC:=$(APPLET_SRC-y)
 APPLETS_DEFINE:=$(APPLETS_DEFINE-y)
 else  # CONFIG_BUILD_AT_ONCE
 # no --combine, build archives out of the individual .o
 # This was the old way the binary was built.
 libbusybox-obj:=archival/libunarchive/libunarchive.a \
 	networking/libiproute/libiproute.a \
 	libpwdgrp/libpwdgrp.a coreutils/libcoreutils/libcoreutils.a \
 	libbb/libbb.a
 libbusybox-obj:=$(patsubst %,$(top_builddir)/%,$(libbusybox-obj))
 ifeq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y)
 # linking against libbusybox, so don't build the .a already contained in the .so
 libraries-y:=$(filter-out $(libbusybox-obj),$(libraries-y))
 endif # CONFIG_FEATURE_SHARED_BUSYBOX

 endif # CONFIG_BUILD_AT_ONCE

 ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y)
 LD_LIBBUSYBOX:=libbusybox.so
 LIBBUSYBOX_SONAME:=$(LD_LIBBUSYBOX).$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL_VERSION)
 DO_INSTALL_LIBS:=$(LD_LIBBUSYBOX) \
 	$(LD_LIBBUSYBOX).$(MAJOR_VERSION) \
 	$(LD_LIBBUSYBOX).$(MAJOR_VERSION).$(MINOR_VERSION)

 endif # CONFIG_BUILD_LIBBUSYBOX

 ifeq ($(strip $(CONFIG_BUILD_AT_ONCE)),y)
 ifneq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y)
 # --combine but not linking against libbusybox, so compile lib*.c
 BUSYBOX_SRC   := $(LIBRARY_SRC)
 BUSYBOX_DEFINE:= $(LIBRARY_DEFINE)
 endif # !CONFIG_FEATURE_SHARED_BUSYBOX
 $(LIBBUSYBOX_SONAME): $(LIBRARY_SRC)
 else # CONFIG_BUILD_AT_ONCE
 $(LIBBUSYBOX_SONAME): $(libbusybox-obj)
 AR_INTRO:=-Wl,--whole-archive
 AR_EXTRO:=-Wl,--no-whole-archive
 endif # CONFIG_BUILD_AT_ONCE


 ifeq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y)
 LDBUSYBOX:=-L$(top_builddir) -lbusybox
 endif

 ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y)
 $(LIBBUSYBOX_SONAME):
 ifndef MAJOR_VERSION
 	$(error MAJOR_VERSION needed for $@ is not defined)
 endif
 	$(do_link) $(LIB_CFLAGS) $(CFLAGS_COMBINE) \
 	-Wl,-soname=$(LD_LIBBUSYBOX).$(MAJOR_VERSION) \
 	-Wl,-z,combreloc $(LIB_LDFLAGS) \
 	-o $(@) \
 	-Wl,--start-group \
 	$(LIBRARY_DEFINE) $(AR_INTRO) $(^) $(AR_EXTRO) \
 	-Wl,--end-group
 	@rm -f $(DO_INSTALL_LIBS)
 	@for i in $(DO_INSTALL_LIBS); do ln -s $(@) $$i ; done
 	$(do_strip)

 endif # ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y)

 busybox_unstripped: $(top_builddir)/.depend $(LIBBUSYBOX_SONAME) $(BUSYBOX_SRC) $(APPLET_SRC) $(libraries-y)
 	$(do_link) $(PROG_CFLAGS) $(PROG_LDFLAGS) $(CFLAGS_COMBINE) \
 	$(foreach f,$(^:.o=.c),$(CFLAGS-$(notdir $(patsubst %/$,%,$(dir $(f))))-$(notdir $(f)))) \
 	$(CFLAGS-$(@)) \
 	-o $@ -Wl,--start-group \
 	$(APPLETS_DEFINE) $(APPLET_SRC) \
 	$(BUSYBOX_DEFINE) $(BUSYBOX_SRC) \
 	$(libraries-y) \
 	$(LDBUSYBOX) $(LIBRARIES) \
 	-Wl,--end-group

 busybox: busybox_unstripped
 	$(Q)cp busybox_unstripped busybox
 	$(do_strip)

 busybox.links: $(top_srcdir)/applets/busybox.mkll include/bb_config.h $(top_srcdir)/include/applets.h
 	$(Q)-$(SHELL) $^ >$@

 install: $(top_srcdir)/applets/install.sh busybox busybox.links
 	$(Q)DO_INSTALL_LIBS="$(strip $(LIBBUSYBOX_SONAME) $(DO_INSTALL_LIBS))" \
 		$(SHELL) $< $(PREFIX) $(INSTALL_OPTS)
 ifeq ($(strip $(CONFIG_FEATURE_SUID)),y)
 	@echo
 	@echo
 	@echo --------------------------------------------------
 	@echo You will probably need to make your busybox binary
 	@echo setuid root to ensure all configured applets will
 	@echo work properly.
 	@echo --------------------------------------------------
 	@echo
 endif

 uninstall: busybox.links
 	rm -f $(PREFIX)/bin/busybox
 	for i in `cat busybox.links` ; do rm -f $(PREFIX)$$i; done
 ifneq ($(strip $(DO_INSTALL_LIBS)),n)
 	for i in $(LIBBUSYBOX_SONAME) $(DO_INSTALL_LIBS); do \
 		rm -f $(PREFIX)$$i; \
 	done
 endif

 check test: busybox
 	bindir=$(top_builddir) srcdir=$(top_srcdir)/testsuite \
 	$(top_srcdir)/testsuite/runtest $(CHECK_VERBOSE)

 sizes: busybox_unstripped
 	$(NM) --size-sort $(<)

 # Documentation Targets
 doc: docs/busybox.pod docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html ;

 docs/busybox.pod : $(top_srcdir)/docs/busybox_header.pod $(top_srcdir)/include/usage.h $(top_srcdir)/docs/busybox_footer.pod $(top_srcdir)/docs/autodocifier.pl
 	$(disp_doc)
 	$(Q)-mkdir -p docs
 	$(Q)-( cat $(top_srcdir)/docs/busybox_header.pod ; \
 	    $(top_srcdir)/docs/autodocifier.pl $(top_srcdir)/include/usage.h ; \
 	    cat $(top_srcdir)/docs/busybox_footer.pod ; ) > docs/busybox.pod

 docs/BusyBox.txt: docs/busybox.pod
 	$(disp_doc)
 	$(Q)-mkdir -p docs
 	$(Q)-pod2text $< > $@

 docs/BusyBox.1: docs/busybox.pod
 	$(disp_doc)
 	$(Q)-mkdir -p docs
 	$(Q)-pod2man --center=BusyBox --release="version $(VERSION)" \
 		$< > $@

 docs/BusyBox.html: docs/busybox.net/BusyBox.html
 	$(disp_doc)
 	$(Q)-mkdir -p docs
 	$(Q)-rm -f docs/BusyBox.html
 	$(Q)-cp docs/busybox.net/BusyBox.html docs/BusyBox.html

 docs/busybox.net/BusyBox.html: docs/busybox.pod
 	$(Q)-mkdir -p docs/busybox.net
 	$(Q)-pod2html --noindex $< > \
 	    docs/busybox.net/BusyBox.html
 	$(Q)-rm -f pod2htm*

 # The nifty new dependency stuff
 scripts/bb_mkdep: $(top_srcdir)/scripts/bb_mkdep.c
 	$(do_link.h)

 DEP_INCLUDES := include/bb_config.h

 ifeq ($(strip $(CONFIG_BBCONFIG)),y)
 DEP_INCLUDES += include/bbconfigopts.h

 include/bbconfigopts.h: .config
 	$(disp_gen)
 	$(Q)$(top_srcdir)/scripts/config/mkconfigs > $@
 endif

 depend dep: $(top_builddir)/.depend ;
 $(top_builddir)/.depend: $(buildtree) scripts/bb_mkdep $(DEP_INCLUDES)
 	$(disp_gen)
 	$(Q)rm -f .depend
 	$(Q)scripts/bb_mkdep $(MKDEP_ARGS) \
 		-I $(top_srcdir)/include $(top_srcdir) > $@.tmp
 	$(Q)mv $@.tmp $@

 include/bb_config.h: .config
 	$(disp_gen)
 	@$(top_builddir)/scripts/config/conf -o $(CONFIG_CONFIG_IN)

 endif # ifeq ($(strip $(HAVE_DOT_CONFIG)),y)

 clean:
 	- rm -f docs/busybox.dvi docs/busybox.ps \
 	    docs/busybox.pod docs/busybox.net/busybox.html \
 	    docs/busybox pod2htm* *.gdb *.elf *~ core .*config.log \
 	    docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html \
 	    docs/busybox.net/BusyBox.html busybox.links \
 	    libbusybox.so* \
 	    .config.old busybox busybox_unstripped
 	- rm -r -f _install testsuite/links
 	- find . -name .\*.flags -exec rm -f {} \;
 	- find . -name \*.o -exec rm -f {} \;
 	- find . -name \*.om -exec rm -f {} \;
 	- find . -name \*.os -exec rm -f {} \;
 	- find . -name \*.osm -exec rm -f {} \;
 	- find . -name \*.a -exec rm -f {} \;

 distclean: clean
 	- $(MAKE) -C scripts/config clean
 	- rm -f scripts/bb_mkdep
 	- rm -r -f include/config $(DEP_INCLUDES)
 	- find . -name .depend'*' -exec rm -f {} \;
 	rm -f .config .config.old .config.cmd

 release: distclean #doc
 	cd ..; \
 	rm -r -f $(PROG)-$(VERSION); \
 	cp -a busybox $(PROG)-$(VERSION); \
 	\
 	find $(PROG)-$(VERSION)/ -type d \
 		-name .svn \
 		-print \
 		-exec rm -r -f {} \; ; \
 	\
 	find $(PROG)-$(VERSION)/ -type f \
 		-name .\#* \
 		-print \
 		-exec rm -f {} \; ; \
 	\
 	tar -cvzf $(PROG)-$(VERSION).tar.gz $(PROG)-$(VERSION)/;

 tags:
 	ctags -R .

 # keep these in sync with noconfig_targets above!
 .PHONY: dummy subdirs check test depend dep buildtree \
         menuconfig config oldconfig randconfig \
 	defconfig allyesconfig allnoconfig allbareconfig \
 	clean distclean \
 	release tags
	# Makefile for busybox
	#
	# Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
	#
	# Licensed under GPLv2, see the file LICENSE in this tarball for details.
	#

	#--------------------------------------------------------------
	# You shouldn't need to mess with anything beyond this point...
	#--------------------------------------------------------------
	noconfig_targets := menuconfig config oldconfig randconfig \
	defconfig allyesconfig allnoconfig allbareconfig \
	clean distclean \
	release tags

	# the toplevel sourcedir
	ifndef top_srcdir
	# make-3.79.1 didn't support MAKEFILE_LIST
	# for building out-of-tree, users of make-3.79.1 still have to pass top_srcdir=
	# to make: make -f /srcs/busybox/Makefile top_srcdir=/srcs/busybox
	ifdef MAKEFILE_LIST
	top_srcdir:=$(shell cd $(dir $(firstword $(MAKEFILE_LIST))) && pwd)
	else
	top_srcdir:=$(CURDIR)
	endif
	endif
	# toplevel directory of the object-tree
	ifndef top_builddir
	top_builddir:=$(CURDIR)
	endif

	export srctree=$(top_srcdir)
	vpath %/Config.in $(srctree)

	DIRS:=applets archival archival/libunarchive coreutils console-tools \
	debianutils editors findutils init miscutils modutils networking \
	networking/libiproute networking/udhcp procps loginutils shell \
	sysklogd util-linux e2fsprogs libpwdgrp coreutils/libcoreutils libbb

	SRC_DIRS:=$(patsubst %,$(top_srcdir)/%,$(DIRS))

	# That's our default target when none is given on the command line
	.PHONY: _all

	_all: all

	# see if we are in verbose mode
	ifdef VERBOSE
	CHECK_VERBOSE := -v
	PACKAGE_BE_VERBOSE := $(VERBOSE)
	endif
	ifdef V
	CHECK_VERBOSE := -v
	PACKAGE_BE_VERBOSE := $(V)
	endif

	ifdef O
	ifeq ("$(origin O)", "command line")
	PACKAGE_OUTPUTDIR := $(shell cd $(O) && pwd)
	top_builddir := $(PACKAGE_OUTPUTDIR)
	endif
	else
	# If no alternate output-dir was specified, we build in cwd
	PACKAGE_OUTPUTDIR := $(top_builddir)
	endif

	define check_gcc
	$(if $(2),$(if $(shell $(CC) $(2) -S -o /dev/null -xc /dev/null > /dev/null 2>&1 && echo y),$(2),$(if $(3),$(3))),$(if $(3),$(3)))
	endef

	define check_ld
	$(if $(2),$(if $(shell $(LD) $(2) -o /dev/null -b binary /dev/null > /dev/null 2>&1 && echo y),$(shell echo \-Wl,$(2)),$(if $(3),$(3))),$(if $(3),$(3)))
	endef

	#######################################################################
	# make-3.79.1 doesn't support order-only prerequisites..
	ifeq ($(MAKE_VERSION),3.79.1)
	\|: $(^) ;
	endif
	#######################################################################



	# Handle building out of tree
	ifneq ($(top_builddir),$(top_srcdir))
	all_tree := $(patsubst %,$(top_builddir)/%,$(DIRS) scripts scripts/config include include/config)
	$(all_tree):
	@mkdir -p "$@"

	saved-output := $(PACKAGE_OUTPUTDIR)

	$(if $(wildcard $(PACKAGE_OUTPUTDIR)),, \
	$(error output directory "$(saved-output)" does not exist))

	.PHONY: $(filter $(noconfig_targets),$(MAKECMDGOALS))

	$(PACKAGE_OUTPUTDIR)/Rules.mak:
	@echo > $@
	@echo top_srcdir=$(top_srcdir) >> $@
	@echo top_builddir=$(PACKAGE_OUTPUTDIR) >> $@
	@echo include $$\(top_srcdir\)/Rules.mak >> $@

	$(PACKAGE_OUTPUTDIR)/Makefile:
	@echo > $@
	@echo top_srcdir=$(top_srcdir) >> $@
	@echo top_builddir=$(PACKAGE_OUTPUTDIR) >> $@
	@echo PACKAGE_SOURCEDIR='$$(top_srcdir)' >> $@
	@echo include '$$(PACKAGE_SOURCEDIR)'/Makefile >> $@


	buildtree := $(all_tree) $(PACKAGE_OUTPUTDIR)/Rules.mak $(PACKAGE_OUTPUTDIR)/Makefile

	# We only need a copy of the Makefile for the config targets and reuse
	# the rest from the source directory, i.e. we do not cp ALL_MAKEFILES.
	scripts/config/Makefile: $(top_srcdir)/scripts/config/Makefile \| $(buildtree)
	@cp $(top_srcdir)/scripts/config/Makefile $@

	else
	all_tree := include/config
	$(all_tree):
	@mkdir -p "$@"
	buildtree := $(all_tree)
	endif # ifneq ($(PACKAGE_OUTPUTDIR),$(top_srcdir))

	help:
	@echo 'Cleaning:'
	@echo ' clean - delete temporary files created by build'
	@echo ' distclean - delete all non-source files (including .config)'
	@echo
	@echo 'Build:'
	@echo ' all - Executable and documentation'
	@echo ' busybox - the swiss-army executable'
	@echo ' doc - docs/BusyBox.{txt,html,1}'
	@echo
	@echo 'Configuration:'
	@echo ' allnoconfig - disable all symbols in .config'
	@echo ' allyesconfig - enable all symbols in .config (see defconfig)'
	@echo ' allbareconfig - enable all applets without any sub-features'
	@echo ' config - text based configurator (of last resort)'
	@echo ' defconfig - set .config to largest generic configuration'
	@echo ' menuconfig - interactive curses-based configurator'
	@echo ' oldconfig - resolve any unresolved symbols in .config'
	@echo
	@echo 'Installation:'
	@echo ' install - install busybox into $prefix'
	@echo ' uninstall'
	@echo
	@echo 'Development:'
	@echo ' check - run the test suite for all applets'
	@echo ' randconfig - generate a random configuration'
	@echo ' release - create a distribution tarball'
	@echo ' sizes - show size of all enabled busybox symbols'
	@echo
	@echo 'Make flags:'
	@echo ' V=<number> - print verbose make output (default: unset)'
	@echo ' 0 print CC invocations'
	@echo ' 1'
	@echo ' 2 also print when make enters a directory'
	@echo ' 3 also verbosely print shell invocations'

	-include $(top_srcdir)/Rules.mak

	ifneq ($(strip $(HAVE_DOT_CONFIG)),y)
	# Default target if none was requested explicitly
	all: defconfig menuconfig ;

	ifneq ($(filter-out $(noconfig_targets),$(MAKECMDGOALS)),)
	# warn if no configuration exists and we are asked to build a non-config target
	.config:
	@echo ""
	@echo "No $(top_builddir)/$@ found!"
	@echo "Please refer to 'make help', section Configuration."
	@echo ""
	@exit 1
	else
	# Avoid implicit rule to kick in by using an empty command
	.config: $(buildtree) ;
	endif
	endif # ifneq ($(strip $(HAVE_DOT_CONFIG)),y)


	# configuration
	# ---------------------------------------------------------------------------

	CONFIG_CONFIG_IN = $(top_srcdir)/Config.in

	scripts/config/conf: scripts/config/Makefile
	$(Q)$(MAKE) -C scripts/config conf

	scripts/config/mconf: scripts/config/Makefile
	$(Q)$(MAKE) -C scripts/config ncurses conf mconf

	menuconfig: scripts/config/mconf
	@./scripts/config/mconf $(CONFIG_CONFIG_IN)

	config: scripts/config/conf
	@./scripts/config/conf $(CONFIG_CONFIG_IN)

	oldconfig: scripts/config/conf
	@./scripts/config/conf -o $(CONFIG_CONFIG_IN)

	randconfig: scripts/config/conf
	@./scripts/config/conf -r $(CONFIG_CONFIG_IN)

	allyesconfig: scripts/config/conf
	@./scripts/config/conf -y $(CONFIG_CONFIG_IN)
	@$(SED) -i -r -e "s/^(USING_CROSS_COMPILER)=.*/# \1 is not set/" .config
	@./scripts/config/conf -o $(CONFIG_CONFIG_IN)

	allnoconfig: scripts/config/conf
	@./scripts/config/conf -n $(CONFIG_CONFIG_IN)

	# defconfig is allyesconfig minus any features that are specialized enough
	# or cause enough behavior change that the user really should switch them on
	# manually if that's what they want. Sort of "maximum sane config".

	defconfig: scripts/config/conf
	@./scripts/config/conf -y $(CONFIG_CONFIG_IN)
	@$(SED) -i -r -e "s/^(USING_CROSS_COMPILER\|CONFIG_(DEBUG.\|STATIC\|SELINUX\|BUILD_(AT_ONCE\|LIBBUSYBOX)\|FEATURE_(DEVFS\|FULL_LIBBUSYBOX\|SHARED_BUSYBOX\|MTAB_SUPPORT\|CLEAN_UP\|UDHCP_DEBUG)\|INSTALL_NO_USR))=./# \1 is not set/" .config
	@./scripts/config/conf -o $(CONFIG_CONFIG_IN)

	allbareconfig: scripts/config/conf
	@./scripts/config/conf -y $(CONFIG_CONFIG_IN)
	@$(SED) -i -r -e "s/^(USING_CROSS_COMPILER\|CONFIG_(DEBUG\|STATIC\|SELINUX\|DEVFSD\|NC_GAPING_SECURITY_HOLE\|BUILD_AT_ONCE)).*/# \1 is not set/" .config
	@$(SED) -i -e "/FEATURE/s/=.//;/^[^#]/s/.FEATURE.*/# \0 is not set/;" .config
	@echo "CONFIG_FEATURE_BUFFERS_GO_ON_STACK=y" >> .config
	@./scripts/config/conf -o $(CONFIG_CONFIG_IN)

	ifeq ($(strip $(HAVE_DOT_CONFIG)),y)

	# Load all Config.in
	-include $(top_builddir)/.config.cmd

	endif # ifeq ($(strip $(HAVE_DOT_CONFIG)),y)

	include $(patsubst %,%/Makefile.in,$(SRC_DIRS))

	ifeq ($(strip $(HAVE_DOT_CONFIG)),y)
	# Finally pull in the dependencies (headers and other includes) of the
	# individual object files
	-include $(top_builddir)/.depend

	$(top_builddir)/applets/applets.o: $(top_builddir)/.config
	# Everything is set.

	all: busybox busybox.links doc ;

	# Two modes of operation: legacy and IMA
	# Legacy mode builds each object through an individual invocation of CC
	# IMA compiles all sources at once (aka IPO aka IPA etc.)

	ifeq ($(strip $(CONFIG_BUILD_AT_ONCE)),y)
	libraries-y:=
	# Which parts of the internal libs are requested?
	# Per default we only want what was actually selected.
	# -a denotes all while -y denotes the selected ones.
	ifeq ($(strip $(CONFIG_FEATURE_FULL_LIBBUSYBOX)),y)
	LIBRARY_DEFINE:=$(LIBRARY_DEFINE-a)
	LIBRARY_SRC :=$(LIBRARY_SRC-a)
	else # CONFIG_FEATURE_FULL_LIBBUSYBOX
	LIBRARY_DEFINE:=$(LIBRARY_DEFINE-y)
	LIBRARY_SRC :=$(LIBRARY_SRC-y)
	endif # CONFIG_FEATURE_FULL_LIBBUSYBOX
	APPLET_SRC:=$(APPLET_SRC-y)
	APPLETS_DEFINE:=$(APPLETS_DEFINE-y)
	else # CONFIG_BUILD_AT_ONCE
	# no --combine, build archives out of the individual .o
	# This was the old way the binary was built.
	libbusybox-obj:=archival/libunarchive/libunarchive.a \
	networking/libiproute/libiproute.a \
	libpwdgrp/libpwdgrp.a coreutils/libcoreutils/libcoreutils.a \
	libbb/libbb.a
	libbusybox-obj:=$(patsubst %,$(top_builddir)/%,$(libbusybox-obj))
	ifeq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y)
	# linking against libbusybox, so don't build the .a already contained in the .so
	libraries-y:=$(filter-out $(libbusybox-obj),$(libraries-y))
	endif # CONFIG_FEATURE_SHARED_BUSYBOX

	endif # CONFIG_BUILD_AT_ONCE

	ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y)
	LD_LIBBUSYBOX:=libbusybox.so
	LIBBUSYBOX_SONAME:=$(LD_LIBBUSYBOX).$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL_VERSION)
	DO_INSTALL_LIBS:=$(LD_LIBBUSYBOX) \
	$(LD_LIBBUSYBOX).$(MAJOR_VERSION) \
	$(LD_LIBBUSYBOX).$(MAJOR_VERSION).$(MINOR_VERSION)

	endif # CONFIG_BUILD_LIBBUSYBOX

	ifeq ($(strip $(CONFIG_BUILD_AT_ONCE)),y)
	ifneq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y)
	# --combine but not linking against libbusybox, so compile lib*.c
	BUSYBOX_SRC := $(LIBRARY_SRC)
	BUSYBOX_DEFINE:= $(LIBRARY_DEFINE)
	endif # !CONFIG_FEATURE_SHARED_BUSYBOX
	$(LIBBUSYBOX_SONAME): $(LIBRARY_SRC)
	else # CONFIG_BUILD_AT_ONCE
	$(LIBBUSYBOX_SONAME): $(libbusybox-obj)
	AR_INTRO:=-Wl,--whole-archive
	AR_EXTRO:=-Wl,--no-whole-archive
	endif # CONFIG_BUILD_AT_ONCE


	ifeq ($(strip $(CONFIG_FEATURE_SHARED_BUSYBOX)),y)
	LDBUSYBOX:=-L$(top_builddir) -lbusybox
	endif

	ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y)
	$(LIBBUSYBOX_SONAME):
	ifndef MAJOR_VERSION
	$(error MAJOR_VERSION needed for $@ is not defined)
	endif
	$(do_link) $(LIB_CFLAGS) $(CFLAGS_COMBINE) \
	-Wl,-soname=$(LD_LIBBUSYBOX).$(MAJOR_VERSION) \
	-Wl,-z,combreloc $(LIB_LDFLAGS) \
	-o $(@) \
	-Wl,--start-group \
	$(LIBRARY_DEFINE) $(AR_INTRO) $(^) $(AR_EXTRO) \
	-Wl,--end-group
	@rm -f $(DO_INSTALL_LIBS)
	@for i in $(DO_INSTALL_LIBS); do ln -s $(@) $$i ; done
	$(do_strip)

	endif # ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y)

	busybox_unstripped: $(top_builddir)/.depend $(LIBBUSYBOX_SONAME) $(BUSYBOX_SRC) $(APPLET_SRC) $(libraries-y)
	$(do_link) $(PROG_CFLAGS) $(PROG_LDFLAGS) $(CFLAGS_COMBINE) \
	$(foreach f,$(^:.o=.c),$(CFLAGS-$(notdir $(patsubst %/$,%,$(dir $(f))))-$(notdir $(f)))) \
	$(CFLAGS-$(@)) \
	-o $@ -Wl,--start-group \
	$(APPLETS_DEFINE) $(APPLET_SRC) \
	$(BUSYBOX_DEFINE) $(BUSYBOX_SRC) \
	$(libraries-y) \
	$(LDBUSYBOX) $(LIBRARIES) \
	-Wl,--end-group

	busybox: busybox_unstripped
	$(Q)cp busybox_unstripped busybox
	$(do_strip)

	busybox.links: $(top_srcdir)/applets/busybox.mkll include/bb_config.h $(top_srcdir)/include/applets.h
	$(Q)-$(SHELL) $^ >$@

	install: $(top_srcdir)/applets/install.sh busybox busybox.links
	$(Q)DO_INSTALL_LIBS="$(strip $(LIBBUSYBOX_SONAME) $(DO_INSTALL_LIBS))" \
	$(SHELL) $< $(PREFIX) $(INSTALL_OPTS)
	ifeq ($(strip $(CONFIG_FEATURE_SUID)),y)
	@echo
	@echo
	@echo --------------------------------------------------
	@echo You will probably need to make your busybox binary
	@echo setuid root to ensure all configured applets will
	@echo work properly.
	@echo --------------------------------------------------
	@echo
	endif

	uninstall: busybox.links
	rm -f $(PREFIX)/bin/busybox
	for i in `cat busybox.links` ; do rm -f $(PREFIX)$$i; done
	ifneq ($(strip $(DO_INSTALL_LIBS)),n)
	for i in $(LIBBUSYBOX_SONAME) $(DO_INSTALL_LIBS); do \
	rm -f $(PREFIX)$$i; \
	done
	endif

	check test: busybox
	bindir=$(top_builddir) srcdir=$(top_srcdir)/testsuite \
	$(top_srcdir)/testsuite/runtest $(CHECK_VERBOSE)

	sizes: busybox_unstripped
	$(NM) --size-sort $(<)

	# Documentation Targets
	doc: docs/busybox.pod docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html ;

	docs/busybox.pod : $(top_srcdir)/docs/busybox_header.pod $(top_srcdir)/include/usage.h $(top_srcdir)/docs/busybox_footer.pod $(top_srcdir)/docs/autodocifier.pl
	$(disp_doc)
	$(Q)-mkdir -p docs
	$(Q)-( cat $(top_srcdir)/docs/busybox_header.pod ; \
	$(top_srcdir)/docs/autodocifier.pl $(top_srcdir)/include/usage.h ; \
	cat $(top_srcdir)/docs/busybox_footer.pod ; ) > docs/busybox.pod

	docs/BusyBox.txt: docs/busybox.pod
	$(disp_doc)
	$(Q)-mkdir -p docs
	$(Q)-pod2text $< > $@

	docs/BusyBox.1: docs/busybox.pod
	$(disp_doc)
	$(Q)-mkdir -p docs
	$(Q)-pod2man --center=BusyBox --release="version $(VERSION)" \
	$< > $@

	docs/BusyBox.html: docs/busybox.net/BusyBox.html
	$(disp_doc)
	$(Q)-mkdir -p docs
	$(Q)-rm -f docs/BusyBox.html
	$(Q)-cp docs/busybox.net/BusyBox.html docs/BusyBox.html

	docs/busybox.net/BusyBox.html: docs/busybox.pod
	$(Q)-mkdir -p docs/busybox.net
	$(Q)-pod2html --noindex $< > \
	docs/busybox.net/BusyBox.html
	$(Q)-rm -f pod2htm*

	# The nifty new dependency stuff
	scripts/bb_mkdep: $(top_srcdir)/scripts/bb_mkdep.c
	$(do_link.h)

	DEP_INCLUDES := include/bb_config.h

	ifeq ($(strip $(CONFIG_BBCONFIG)),y)
	DEP_INCLUDES += include/bbconfigopts.h

	include/bbconfigopts.h: .config
	$(disp_gen)
	$(Q)$(top_srcdir)/scripts/config/mkconfigs > $@
	endif

	depend dep: $(top_builddir)/.depend ;
	$(top_builddir)/.depend: $(buildtree) scripts/bb_mkdep $(DEP_INCLUDES)
	$(disp_gen)
	$(Q)rm -f .depend
	$(Q)scripts/bb_mkdep $(MKDEP_ARGS) \
	-I $(top_srcdir)/include $(top_srcdir) > $@.tmp
	$(Q)mv $@.tmp $@

	include/bb_config.h: .config
	$(disp_gen)
	@$(top_builddir)/scripts/config/conf -o $(CONFIG_CONFIG_IN)

	endif # ifeq ($(strip $(HAVE_DOT_CONFIG)),y)

	clean:
	- rm -f docs/busybox.dvi docs/busybox.ps \
	docs/busybox.pod docs/busybox.net/busybox.html \
	docs/busybox pod2htm* .gdb .elf ~ core .config.log \
	docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html \
	docs/busybox.net/BusyBox.html busybox.links \
	libbusybox.so* \
	.config.old busybox busybox_unstripped
	- rm -r -f _install testsuite/links
	- find . -name .\*.flags -exec rm -f {} \;
	- find . -name \*.o -exec rm -f {} \;
	- find . -name \*.om -exec rm -f {} \;
	- find . -name \*.os -exec rm -f {} \;
	- find . -name \*.osm -exec rm -f {} \;
	- find . -name \*.a -exec rm -f {} \;

	distclean: clean
	- $(MAKE) -C scripts/config clean
	- rm -f scripts/bb_mkdep
	- rm -r -f include/config $(DEP_INCLUDES)
	- find . -name .depend'*' -exec rm -f {} \;
	rm -f .config .config.old .config.cmd

	release: distclean #doc
	cd ..; \
	rm -r -f $(PROG)-$(VERSION); \
	cp -a busybox $(PROG)-$(VERSION); \
	\
	find $(PROG)-$(VERSION)/ -type d \
	-name .svn \
	-print \
	-exec rm -r -f {} \; ; \
	\
	find $(PROG)-$(VERSION)/ -type f \
	-name .\#* \
	-print \
	-exec rm -f {} \; ; \
	\
	tar -cvzf $(PROG)-$(VERSION).tar.gz $(PROG)-$(VERSION)/;

	tags:
	ctags -R .

	# keep these in sync with noconfig_targets above!
	.PHONY: dummy subdirs check test depend dep buildtree \
	menuconfig config oldconfig randconfig \
	defconfig allyesconfig allnoconfig allbareconfig \
	clean distclean \
	release tags