Rules.mak - codeaurora/busybox - Gitiles

 # Rules.make for busybox
 #
 # Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
 #
 # Licensed under GPLv2, see the file LICENSE in this tarball for details.
 #

 # Pull in the user's busybox configuration
 ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
 -include $(top_builddir)/.config
 endif

 ifeq ($(MAKELEVEL),0)
 ifeq ($(HAVE_DOT_CONFIG),y)
 rules-mak-rules:=0
 endif
 endif

 #--------------------------------------------------------
 PROG      := busybox
 MAJOR_VERSION   :=1
 MINOR_VERSION   :=1
 SUBLEVEL_VERSION:=1
 EXTRAVERSION    :=-pre0
 VERSION   :=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL_VERSION)$(EXTRAVERSION)
 BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z")


 #--------------------------------------------------------
 # With a modern GNU make(1) (highly recommended, that's what all the
 # developers use), all of the following configuration values can be
 # overridden at the command line.  For example:
 #   make CROSS=powerpc-linux- top_srcdir="$HOME/busybox" PREFIX=/mnt/app
 #--------------------------------------------------------

 # If you are running a cross compiler, you will want to set 'CROSS'
 # to something more interesting...  Target architecture is determined
 # by asking the CC compiler what arch it compiles things for, so unless
 # your compiler is broken, you should not need to specify __TARGET_ARCH
 CROSS           =$(subst ",, $(strip $(CROSS_COMPILER_PREFIX)))
 #")
 CC             = $(CROSS)gcc
 AR             = $(CROSS)ar
 AS             = $(CROSS)as
 LD             = $(CROSS)ld
 NM             = $(CROSS)nm
 STRIP          = $(CROSS)strip
 CPP            = $(CC) -E
 SED           ?= sed
 AWK           ?= awk


 ifdef PACKAGE_BE_VERBOSE
 PACKAGE_BE_VERBOSE := $(shell echo $(PACKAGE_BE_VERBOSE) | $(SED) "s/[[:alpha:]]*//g")
 endif

 # for make V=3 and above make $(shell) invocations verbose
 ifeq ($(if $(strip $(PACKAGE_BE_VERBOSE)),$(shell test $(PACKAGE_BE_VERBOSE) -gt 2 ; echo $$?),1),0)
  SHELL+=-x
  MKDEP_ARGS:=-w
 endif

 # What OS are you compiling busybox for?  This allows you to include
 # OS specific things, syscall overrides, etc.
 TARGET_OS=linux

 # Select the compiler needed to build binaries for your development system
 HOSTCC    = gcc
 HOSTCFLAGS= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer

 # Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
 LC_ALL:= C

 # If you want to add some simple compiler switches (like -march=i686),
 # especially from the command line, use this instead of CFLAGS directly.
 # For optimization overrides, it's better still to set OPTIMIZATIONS.
 CFLAGS_EXTRA=$(subst ",, $(strip $(EXTRA_CFLAGS_OPTIONS)))
 #")

 # To compile vs some other alternative libc, you may need to use/adjust
 # the following lines to meet your needs...
 #
 # If you are using Red Hat 6.x with the compatible RPMs (for developing under
 # Red Hat 5.x and glibc 2.0) uncomment the following.  Be sure to read about
 # using the compatible RPMs (compat-*) at http://www.redhat.com !
 #LIBCDIR:=/usr/i386-glibc20-linux
 #
 # For other libraries, you are on your own.  But these may (or may not) help...
 #LDFLAGS+=-nostdlib
 #LIBRARIES:=$(LIBCDIR)/lib/libc.a -lgcc
 #CROSS_CFLAGS+=-nostdinc -I$(LIBCDIR)/include -I$(GCCINCDIR) -funsigned-char
 #GCCINCDIR:=$(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp")

 WARNINGS=-Wall -Wstrict-prototypes -Wshadow
 CFLAGS+=-I$(top_builddir)/include -I$(top_srcdir)/include

 ARFLAGS=cruP


 # Get the CC MAJOR/MINOR version
 # gcc centric. Perhaps fiddle with findstring gcc,$(CC) for the rest
 CC_MAJOR:=$(shell printf "%02d" $(shell echo __GNUC__ | $(CC) -E -xc - | tail -n 1))
 CC_MINOR:=$(shell printf "%02d" $(shell echo __GNUC_MINOR__ | $(CC) -E -xc - | tail -n 1))

 # Note: spaces are significant here!
 # Check if CC version is equal to given MAJOR,MINOR. Returns empty if false.
 define cc_eq
 $(shell [ $(CC_MAJOR) -eq $(1) -a $(CC_MINOR) -eq $(2) ] && echo y)
 endef
 # Check if CC version is greater or equal than given MAJOR,MINOR
 define cc_ge
 $(shell [ $(CC_MAJOR) -ge $(1) -a $(CC_MINOR) -ge $(2) ] && echo y)
 endef
 # Check if CC version is less or equal than given MAJOR,MINOR
 define cc_le
 $(shell [ $(CC_MAJOR) -le $(1) -a $(CC_MINOR) -le $(2) ] && echo y)
 endef

 # Workaround bugs in make-3.80 for eval in conditionals
 define is_eq
 $(shell [ $(1) = $(2) ] 2> /dev/null && echo y)
 endef
 define is_neq
 $(shell [ $(1) != $(2) ] 2> /dev/null && echo y)
 endef

 #--------------------------------------------------------
 export VERSION BUILDTIME HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP

 # TARGET_ARCH and TARGET_MACH will be passed verbatim to CC with recent
 # versions of make, so we use __TARGET_ARCH here.
 # Current builtin rules looks like that:
 # COMPILE.s = $(AS) $(ASFLAGS) $(TARGET_MACH)
 # COMPILE.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c

 ifeq ($(strip $(__TARGET_ARCH)),)
 __TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
 		-e 's/i.86/i386/' \
 		-e 's/sparc.*/sparc/' \
 		-e 's/arm.*/arm/g' \
 		-e 's/m68k.*/m68k/' \
 		-e 's/ppc/powerpc/g' \
 		-e 's/v850.*/v850/g' \
 		-e 's/sh[234]/sh/' \
 		-e 's/mips-.*/mips/' \
 		-e 's/mipsel-.*/mipsel/' \
 		-e 's/cris.*/cris/' \
 		)
 endif

 $(call check_gcc,CFLAGS,-funsigned-char,)
 $(call check_gcc,CFLAGS,-mmax-stack-frame=256,)

 #--------------------------------------------------------
 # Arch specific compiler optimization stuff should go here.
 # Unless you want to override the defaults, do not set anything
 # for OPTIMIZATIONS...

 # use '-Os' optimization if available, else use -O2
 $(call check_gcc,OPTIMIZATIONS,-Os,-O2)

 # gcc 2.95 exits with 0 for "unrecognized option"
 $(if $(call is_eq,$(CONFIG_BUILD_AT_ONCE),y),\
   $(if $(call cc_ge,3,0),\
     $(call check_gcc,CFLAGS_COMBINE,--combine,)))

 $(if $(call is_eq,$(CONFIG_BUILD_AT_ONCE),y),\
   $(call check_gcc,OPTIMIZATIONS,-funit-at-a-time,))

 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25795
 #$(if $(call is_eq,$(CONFIG_BUILD_AT_ONCE),y),\
 #  $(call check_gcc,PROG_CFLAGS,-fwhole-program,))

 $(call check_ld,LIB_LDFLAGS,--enable-new-dtags,)
 #$(call check_ld,LIB_LDFLAGS,--reduce-memory-overheads,)
 #$(call check_ld,LIB_LDFLAGS,--as-needed,)
 #$(call check_ld,LIB_LDFLAGS,--warn-shared-textrel,)

 $(call check_ld,PROG_LDFLAGS,--gc-sections,)

 # Some nice architecture specific optimizations
 ifeq ($(__TARGET_ARCH),arm)
     OPTIMIZATIONS+=-fstrict-aliasing
 endif # arm

 $(if $(call is_eq,$(__TARGET_ARCH),i386),\
   $(call check_gcc,OPTIMIZATIONS,-march=i386,))

 # gcc-4.0 and older seem to benefit from these
 $(if $(call cc_le,4,0),\
   $(call check_gcc,OPTIMIZATIONS,-mpreferred-stack-boundary=2,)\
   $(call check_gcc,OPTIMIZATIONS,-falign-functions=1 -falign-jumps=1 -falign-loops=1,\
 		-malign-functions=0 -malign-jumps=0 -malign-loops=0))

 # gcc-4.1 and beyond seem to benefit from these
 # turn off flags which hurt -Os
 $(if $(call cc_ge,4,1),\
   $(call check_gcc,OPTIMIZATIONS,-fno-tree-loop-optimize,)\
   $(call check_gcc,OPTIMIZATIONS,-fno-tree-dominator-opts,)\
   $(call check_gcc,OPTIMIZATIONS,-fno-strength-reduce,)\
 \
   $(call check_gcc,OPTIMIZATIONS,-fno-branch-count-reg,))

 $(call check_gcc,OPTIMIZATIONS,-fomit-frame-pointer,)

 #
 #--------------------------------------------------------
 # If you're going to do a lot of builds with a non-vanilla configuration,
 # it makes sense to adjust parameters above, so you can type "make"
 # by itself, instead of following it by the same half-dozen overrides
 # every time.  The stuff below, on the other hand, is probably less
 # prone to casual user adjustment.
 #

 ifeq ($(CONFIG_LFS),y)
     # For large file summit support
     CFLAGS+=-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
 endif
 ifeq ($(CONFIG_DMALLOC),y)
     # For testing mem leaks with dmalloc
     CFLAGS+=-DDMALLOC
     LIBRARIES:=-ldmalloc
 else
     ifeq ($(CONFIG_EFENCE),y)
 	LIBRARIES:=-lefence
     endif
 endif

 $(if $(call is_eq,$(CONFIG_DEBUG),y),\
  $(call check_ld,LDFLAGS,--warn-common,),\
  $(call check_ld,LDFLAGS,--warn-common,)$(call check_ld,LDFLAGS,--sort-common,))
 ifeq ($(CONFIG_DEBUG),y)
     CFLAGS  +=$(WARNINGS) -g -D_GNU_SOURCE
     STRIPCMD:=/bin/true -Not_stripping_since_we_are_debugging
 else
     CFLAGS+=$(WARNINGS) $(OPTIMIZATIONS) -D_GNU_SOURCE -DNDEBUG
     STRIPCMD:=$(STRIP) -s --remove-section=.note --remove-section=.comment
 endif
 $(if $(call is_eq,$(CONFIG_STATIC),y),\
     $(call check_gcc,PROG_CFLAGS,-static,))

 $(call check_gcc,CFLAGS_SHARED,-shared,)
 LIB_CFLAGS+=$(CFLAGS_SHARED)

 $(if $(call is_eq,$(CONFIG_BUILD_LIBBUSYBOX),y),\
     $(call check_gcc,CFLAGS_PIC,-fPIC,))

 ifeq ($(CONFIG_SELINUX),y)
     LIBRARIES += -lselinux
 endif

 ifeq ($(strip $(PREFIX)),)
     PREFIX:=`pwd`/_install
 endif

 CFLAGS    += $(CROSS_CFLAGS)
 ifdef BB_INIT_SCRIPT
     CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"'
 endif

 # Put user-supplied flags at the end, where they
 # have a chance of winning.
 CFLAGS += $(CFLAGS_EXTRA)

 #------------------------------------------------------------
 # Installation options
 ifeq ($(strip $(CONFIG_INSTALL_APPLET_HARDLINKS)),y)
 INSTALL_OPTS=--hardlinks
 endif
 ifeq ($(strip $(CONFIG_INSTALL_APPLET_SYMLINKS)),y)
 INSTALL_OPTS=--symlinks
 endif
 ifeq ($(strip $(CONFIG_INSTALL_APPLET_DONT)),y)
 INSTALL_OPTS=
 endif


 #------------------------------------------------------------
 # object extensions

 # object potentially used in shared object
 ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y)
 # single-object extension
 os:=.os
 # multi-object extension
 om:=.osm
 else
 os:=.o
 om:=.om
 endif

 #------------------------------------------------------------
 # Make the output nice and tight

 # for make V=2 and above, do print directory
 ifneq ($(shell test -n "$(strip $(PACKAGE_BE_VERBOSE))" && test $(PACKAGE_BE_VERBOSE) -gt 1 ; echo $$?),0)
   MAKEFLAGS += --no-print-directory
 endif

 export MAKEOVERRIDES
 export MAKE_IS_SILENT=n
 ifneq ($(findstring s,$(MAKEFLAGS)),)
 export MAKE_IS_SILENT=y
 DISP  := sil
 Q     := @
 else
 ifneq ($(V)$(VERBOSE),)
 DISP  := ver
 Q     :=
 else
 DISP  := pur
 Q     := @
 endif
 endif

 define show_objs
   $(subst $(top_builddir)/,,$(subst ../,,$@))
 endef
 pur_disp_compile.c = @echo "  "CC $(show_objs) ;
 pur_disp_compile.h = @echo "  "HOSTCC $(show_objs) ;
 pur_disp_strip     = @echo "  "STRIP $(show_objs) ;
 pur_disp_link      = @echo "  "LINK $(show_objs) ;
 pur_disp_link.h    = @echo "  "HOSTLINK $(show_objs) ;
 pur_disp_ar        = @echo "  "AR $(ARFLAGS) $(show_objs) ;
 pur_disp_gen       = @echo "  "GEN $@ ;
 pur_disp_doc       = @echo "  "DOC $(subst docs/,,$@) ;
 pur_disp_bin       = @echo "  "BIN $(show_objs) ;
 sil_disp_compile.c = @
 sil_disp_compile.h = @
 sil_disp_strip     = @
 sil_disp_link      = @
 sil_disp_link.h    = @
 sil_disp_ar        = @
 sil_disp_gen       = @
 sil_disp_doc       = @
 sil_disp_bin       = @
 ver_disp_compile.c =
 ver_disp_compile.h =
 ver_disp_strip     =
 ver_disp_link      =
 ver_disp_link.h    =
 ver_disp_ar        =
 ver_disp_gen       =
 ver_disp_doc       =
 ver_disp_bin       =
 disp_compile.c     = $($(DISP)_disp_compile.c)
 disp_compile.h     = $($(DISP)_disp_compile.h)
 disp_strip         = $($(DISP)_disp_strip)
 disp_link          = $($(DISP)_disp_link)
 disp_link.h        = $($(DISP)_disp_link.h)
 disp_ar            = $($(DISP)_disp_ar)
 disp_gen           = $($(DISP)_disp_gen)
 disp_doc           = $($(DISP)_disp_doc)
 disp_bin           = $($(DISP)_disp_bin)
 # CFLAGS-dir        == $(CFLAGS-$(notdir $(@D)))
 # CFLAGS-dir-file.o == $(CFLAGS-$(notdir $(@D))-$(notdir $(@F)))
 # CFLAGS-dir-file.c == $(CFLAGS-$(notdir $(<D))-$(notdir $(<F)))
 # all prerequesites == $(foreach fil,$^,$(CFLAGS-$(notdir $(patsubst %/$,%,$(dir $(fil))))-$(notdir $(fil))))
 cmd_compile.c      = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -I$(srcdir) -c -o $@ $< \
  $(foreach f,$^,$(CFLAGS-$(notdir $(patsubst %/$,%,$(dir $(f))))-$(notdir $(f)))) \
  $(CFLAGS-$(notdir $(@D))-$(notdir $(@F))) \
  $(CFLAGS-$(notdir $(@D)))
 cmd_compile.m      = $(cmd_compile.c) -DL_$(patsubst %$(suffix $(notdir $@)),%,$(notdir $@))
 cmd_compile.h      = $(HOSTCC) $(HOSTCFLAGS) -c -o $@ $<
 cmd_strip          = $(STRIPCMD) $@
 cmd_link           = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -I$(srcdir) $(LDFLAGS)
 cmd_link.h         = $(HOSTCC) $(HOSTCFLAGS) $(HOST_LDFLAGS) $^ -o $@
 cmd_ar             = $(AR) $(ARFLAGS) $@ $^
 compile.c          = $(disp_compile.c) $(cmd_compile.c)
 compile.m          = $(disp_compile.c) $(cmd_compile.m)
 compile.h          = $(disp_compile.h) $(cmd_compile.h)
 do_strip           = $(disp_strip)     $(cmd_strip)
 do_link            = $(disp_link)      $(cmd_link)
 do_link.h          = $(disp_link.h)    $(cmd_link.h)
 do_ar              = $(disp_ar)        $(cmd_ar)

 ifdef rules-mak-rules
 .SUFFIXES: .c .S .o .os .om .osm .oS .so .a .s .i .E

 # generic rules
 %.o:  %.c ; $(compile.c)
 %.os: %.c ; $(compile.c) $(CFLAGS_PIC)
 %.o:      ; $(compile.c)
 %.os:     ; $(compile.c) $(CFLAGS_PIC)
 %.om:     ; $(compile.m)
 %.osm:    ; $(compile.m) $(CFLAGS_PIC)

 endif # rules-mak-rules

 .PHONY: dummy
	# Rules.make for busybox
	#
	# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
	#
	# Licensed under GPLv2, see the file LICENSE in this tarball for details.
	#

	# Pull in the user's busybox configuration
	ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
	-include $(top_builddir)/.config
	endif

	ifeq ($(MAKELEVEL),0)
	ifeq ($(HAVE_DOT_CONFIG),y)
	rules-mak-rules:=0
	endif
	endif

	#--------------------------------------------------------
	PROG := busybox
	MAJOR_VERSION :=1
	MINOR_VERSION :=1
	SUBLEVEL_VERSION:=1
	EXTRAVERSION :=-pre0
	VERSION :=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL_VERSION)$(EXTRAVERSION)
	BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z")


	#--------------------------------------------------------
	# With a modern GNU make(1) (highly recommended, that's what all the
	# developers use), all of the following configuration values can be
	# overridden at the command line. For example:
	# make CROSS=powerpc-linux- top_srcdir="$HOME/busybox" PREFIX=/mnt/app
	#--------------------------------------------------------

	# If you are running a cross compiler, you will want to set 'CROSS'
	# to something more interesting... Target architecture is determined
	# by asking the CC compiler what arch it compiles things for, so unless
	# your compiler is broken, you should not need to specify __TARGET_ARCH
	CROSS =$(subst ",, $(strip $(CROSS_COMPILER_PREFIX)))
	#")
	CC = $(CROSS)gcc
	AR = $(CROSS)ar
	AS = $(CROSS)as
	LD = $(CROSS)ld
	NM = $(CROSS)nm
	STRIP = $(CROSS)strip
	CPP = $(CC) -E
	SED ?= sed
	AWK ?= awk


	ifdef PACKAGE_BE_VERBOSE
	PACKAGE_BE_VERBOSE := $(shell echo $(PACKAGE_BE_VERBOSE) \| $(SED) "s/[[:alpha:]]*//g")
	endif

	# for make V=3 and above make $(shell) invocations verbose
	ifeq ($(if $(strip $(PACKAGE_BE_VERBOSE)),$(shell test $(PACKAGE_BE_VERBOSE) -gt 2 ; echo $$?),1),0)
	SHELL+=-x
	MKDEP_ARGS:=-w
	endif

	# What OS are you compiling busybox for? This allows you to include
	# OS specific things, syscall overrides, etc.
	TARGET_OS=linux

	# Select the compiler needed to build binaries for your development system
	HOSTCC = gcc
	HOSTCFLAGS= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer

	# Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
	LC_ALL:= C

	# If you want to add some simple compiler switches (like -march=i686),
	# especially from the command line, use this instead of CFLAGS directly.
	# For optimization overrides, it's better still to set OPTIMIZATIONS.
	CFLAGS_EXTRA=$(subst ",, $(strip $(EXTRA_CFLAGS_OPTIONS)))
	#")

	# To compile vs some other alternative libc, you may need to use/adjust
	# the following lines to meet your needs...
	#
	# If you are using Red Hat 6.x with the compatible RPMs (for developing under
	# Red Hat 5.x and glibc 2.0) uncomment the following. Be sure to read about
	# using the compatible RPMs (compat-*) at http://www.redhat.com !
	#LIBCDIR:=/usr/i386-glibc20-linux
	#
	# For other libraries, you are on your own. But these may (or may not) help...
	#LDFLAGS+=-nostdlib
	#LIBRARIES:=$(LIBCDIR)/lib/libc.a -lgcc
	#CROSS_CFLAGS+=-nostdinc -I$(LIBCDIR)/include -I$(GCCINCDIR) -funsigned-char
	#GCCINCDIR:=$(shell gcc -print-search-dirs \| sed -ne "s/install: \(.*\)/\1include/gp")

	WARNINGS=-Wall -Wstrict-prototypes -Wshadow
	CFLAGS+=-I$(top_builddir)/include -I$(top_srcdir)/include

	ARFLAGS=cruP



	# Get the CC MAJOR/MINOR version
	# gcc centric. Perhaps fiddle with findstring gcc,$(CC) for the rest
	CC_MAJOR:=$(shell printf "%02d" $(shell echo __GNUC__ \| $(CC) -E -xc - \| tail -n 1))
	CC_MINOR:=$(shell printf "%02d" $(shell echo __GNUC_MINOR__ \| $(CC) -E -xc - \| tail -n 1))

	# Note: spaces are significant here!
	# Check if CC version is equal to given MAJOR,MINOR. Returns empty if false.
	define cc_eq
	$(shell [ $(CC_MAJOR) -eq $(1) -a $(CC_MINOR) -eq $(2) ] && echo y)
	endef
	# Check if CC version is greater or equal than given MAJOR,MINOR
	define cc_ge
	$(shell [ $(CC_MAJOR) -ge $(1) -a $(CC_MINOR) -ge $(2) ] && echo y)
	endef
	# Check if CC version is less or equal than given MAJOR,MINOR
	define cc_le
	$(shell [ $(CC_MAJOR) -le $(1) -a $(CC_MINOR) -le $(2) ] && echo y)
	endef

	# Workaround bugs in make-3.80 for eval in conditionals
	define is_eq
	$(shell [ $(1) = $(2) ] 2> /dev/null && echo y)
	endef
	define is_neq
	$(shell [ $(1) != $(2) ] 2> /dev/null && echo y)
	endef

	#--------------------------------------------------------
	export VERSION BUILDTIME HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP

	# TARGET_ARCH and TARGET_MACH will be passed verbatim to CC with recent
	# versions of make, so we use __TARGET_ARCH here.
	# Current builtin rules looks like that:
	# COMPILE.s = $(AS) $(ASFLAGS) $(TARGET_MACH)
	# COMPILE.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c

	ifeq ($(strip $(__TARGET_ARCH)),)
	__TARGET_ARCH:=$(shell $(CC) -dumpmachine \| sed -e s'/-.*//' \
	-e 's/i.86/i386/' \
	-e 's/sparc.*/sparc/' \
	-e 's/arm.*/arm/g' \
	-e 's/m68k.*/m68k/' \
	-e 's/ppc/powerpc/g' \
	-e 's/v850.*/v850/g' \
	-e 's/sh[234]/sh/' \
	-e 's/mips-.*/mips/' \
	-e 's/mipsel-.*/mipsel/' \
	-e 's/cris.*/cris/' \
	)
	endif

	$(call check_gcc,CFLAGS,-funsigned-char,)
	$(call check_gcc,CFLAGS,-mmax-stack-frame=256,)

	#--------------------------------------------------------
	# Arch specific compiler optimization stuff should go here.
	# Unless you want to override the defaults, do not set anything
	# for OPTIMIZATIONS...

	# use '-Os' optimization if available, else use -O2
	$(call check_gcc,OPTIMIZATIONS,-Os,-O2)

	# gcc 2.95 exits with 0 for "unrecognized option"
	$(if $(call is_eq,$(CONFIG_BUILD_AT_ONCE),y),\
	$(if $(call cc_ge,3,0),\
	$(call check_gcc,CFLAGS_COMBINE,--combine,)))

	$(if $(call is_eq,$(CONFIG_BUILD_AT_ONCE),y),\
	$(call check_gcc,OPTIMIZATIONS,-funit-at-a-time,))

	# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25795
	#$(if $(call is_eq,$(CONFIG_BUILD_AT_ONCE),y),\
	# $(call check_gcc,PROG_CFLAGS,-fwhole-program,))

	$(call check_ld,LIB_LDFLAGS,--enable-new-dtags,)
	#$(call check_ld,LIB_LDFLAGS,--reduce-memory-overheads,)
	#$(call check_ld,LIB_LDFLAGS,--as-needed,)
	#$(call check_ld,LIB_LDFLAGS,--warn-shared-textrel,)

	$(call check_ld,PROG_LDFLAGS,--gc-sections,)

	# Some nice architecture specific optimizations
	ifeq ($(__TARGET_ARCH),arm)
	OPTIMIZATIONS+=-fstrict-aliasing
	endif # arm

	$(if $(call is_eq,$(__TARGET_ARCH),i386),\
	$(call check_gcc,OPTIMIZATIONS,-march=i386,))

	# gcc-4.0 and older seem to benefit from these
	$(if $(call cc_le,4,0),\
	$(call check_gcc,OPTIMIZATIONS,-mpreferred-stack-boundary=2,)\
	$(call check_gcc,OPTIMIZATIONS,-falign-functions=1 -falign-jumps=1 -falign-loops=1,\
	-malign-functions=0 -malign-jumps=0 -malign-loops=0))

	# gcc-4.1 and beyond seem to benefit from these
	# turn off flags which hurt -Os
	$(if $(call cc_ge,4,1),\
	$(call check_gcc,OPTIMIZATIONS,-fno-tree-loop-optimize,)\
	$(call check_gcc,OPTIMIZATIONS,-fno-tree-dominator-opts,)\
	$(call check_gcc,OPTIMIZATIONS,-fno-strength-reduce,)\
	\
	$(call check_gcc,OPTIMIZATIONS,-fno-branch-count-reg,))

	$(call check_gcc,OPTIMIZATIONS,-fomit-frame-pointer,)

	#
	#--------------------------------------------------------
	# If you're going to do a lot of builds with a non-vanilla configuration,
	# it makes sense to adjust parameters above, so you can type "make"
	# by itself, instead of following it by the same half-dozen overrides
	# every time. The stuff below, on the other hand, is probably less
	# prone to casual user adjustment.
	#

	ifeq ($(CONFIG_LFS),y)
	# For large file summit support
	CFLAGS+=-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
	endif
	ifeq ($(CONFIG_DMALLOC),y)
	# For testing mem leaks with dmalloc
	CFLAGS+=-DDMALLOC
	LIBRARIES:=-ldmalloc
	else
	ifeq ($(CONFIG_EFENCE),y)
	LIBRARIES:=-lefence
	endif
	endif

	$(if $(call is_eq,$(CONFIG_DEBUG),y),\
	$(call check_ld,LDFLAGS,--warn-common,),\
	$(call check_ld,LDFLAGS,--warn-common,)$(call check_ld,LDFLAGS,--sort-common,))
	ifeq ($(CONFIG_DEBUG),y)
	CFLAGS +=$(WARNINGS) -g -D_GNU_SOURCE
	STRIPCMD:=/bin/true -Not_stripping_since_we_are_debugging
	else
	CFLAGS+=$(WARNINGS) $(OPTIMIZATIONS) -D_GNU_SOURCE -DNDEBUG
	STRIPCMD:=$(STRIP) -s --remove-section=.note --remove-section=.comment
	endif
	$(if $(call is_eq,$(CONFIG_STATIC),y),\
	$(call check_gcc,PROG_CFLAGS,-static,))

	$(call check_gcc,CFLAGS_SHARED,-shared,)
	LIB_CFLAGS+=$(CFLAGS_SHARED)

	$(if $(call is_eq,$(CONFIG_BUILD_LIBBUSYBOX),y),\
	$(call check_gcc,CFLAGS_PIC,-fPIC,))

	ifeq ($(CONFIG_SELINUX),y)
	LIBRARIES += -lselinux
	endif

	ifeq ($(strip $(PREFIX)),)
	PREFIX:=`pwd`/_install
	endif

	CFLAGS += $(CROSS_CFLAGS)
	ifdef BB_INIT_SCRIPT
	CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"'
	endif

	# Put user-supplied flags at the end, where they
	# have a chance of winning.
	CFLAGS += $(CFLAGS_EXTRA)

	#------------------------------------------------------------
	# Installation options
	ifeq ($(strip $(CONFIG_INSTALL_APPLET_HARDLINKS)),y)
	INSTALL_OPTS=--hardlinks
	endif
	ifeq ($(strip $(CONFIG_INSTALL_APPLET_SYMLINKS)),y)
	INSTALL_OPTS=--symlinks
	endif
	ifeq ($(strip $(CONFIG_INSTALL_APPLET_DONT)),y)
	INSTALL_OPTS=
	endif


	#------------------------------------------------------------
	# object extensions

	# object potentially used in shared object
	ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y)
	# single-object extension
	os:=.os
	# multi-object extension
	om:=.osm
	else
	os:=.o
	om:=.om
	endif

	#------------------------------------------------------------
	# Make the output nice and tight

	# for make V=2 and above, do print directory
	ifneq ($(shell test -n "$(strip $(PACKAGE_BE_VERBOSE))" && test $(PACKAGE_BE_VERBOSE) -gt 1 ; echo $$?),0)
	MAKEFLAGS += --no-print-directory
	endif

	export MAKEOVERRIDES
	export MAKE_IS_SILENT=n
	ifneq ($(findstring s,$(MAKEFLAGS)),)
	export MAKE_IS_SILENT=y
	DISP := sil
	Q := @
	else
	ifneq ($(V)$(VERBOSE),)
	DISP := ver
	Q :=
	else
	DISP := pur
	Q := @
	endif
	endif

	define show_objs
	$(subst $(top_builddir)/,,$(subst ../,,$@))
	endef
	pur_disp_compile.c = @echo " "CC $(show_objs) ;
	pur_disp_compile.h = @echo " "HOSTCC $(show_objs) ;
	pur_disp_strip = @echo " "STRIP $(show_objs) ;
	pur_disp_link = @echo " "LINK $(show_objs) ;
	pur_disp_link.h = @echo " "HOSTLINK $(show_objs) ;
	pur_disp_ar = @echo " "AR $(ARFLAGS) $(show_objs) ;
	pur_disp_gen = @echo " "GEN $@ ;
	pur_disp_doc = @echo " "DOC $(subst docs/,,$@) ;
	pur_disp_bin = @echo " "BIN $(show_objs) ;
	sil_disp_compile.c = @
	sil_disp_compile.h = @
	sil_disp_strip = @
	sil_disp_link = @
	sil_disp_link.h = @
	sil_disp_ar = @
	sil_disp_gen = @
	sil_disp_doc = @
	sil_disp_bin = @
	ver_disp_compile.c =
	ver_disp_compile.h =
	ver_disp_strip =
	ver_disp_link =
	ver_disp_link.h =
	ver_disp_ar =
	ver_disp_gen =
	ver_disp_doc =
	ver_disp_bin =
	disp_compile.c = $($(DISP)_disp_compile.c)
	disp_compile.h = $($(DISP)_disp_compile.h)
	disp_strip = $($(DISP)_disp_strip)
	disp_link = $($(DISP)_disp_link)
	disp_link.h = $($(DISP)_disp_link.h)
	disp_ar = $($(DISP)_disp_ar)
	disp_gen = $($(DISP)_disp_gen)
	disp_doc = $($(DISP)_disp_doc)
	disp_bin = $($(DISP)_disp_bin)
	# CFLAGS-dir == $(CFLAGS-$(notdir $(@D)))
	# CFLAGS-dir-file.o == $(CFLAGS-$(notdir $(@D))-$(notdir $(@F)))
	# CFLAGS-dir-file.c == $(CFLAGS-$(notdir $(<D))-$(notdir $(<F)))
	# all prerequesites == $(foreach fil,$^,$(CFLAGS-$(notdir $(patsubst %/$,%,$(dir $(fil))))-$(notdir $(fil))))
	cmd_compile.c = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -I$(srcdir) -c -o $@ $< \
	$(foreach f,$^,$(CFLAGS-$(notdir $(patsubst %/$,%,$(dir $(f))))-$(notdir $(f)))) \
	$(CFLAGS-$(notdir $(@D))-$(notdir $(@F))) \
	$(CFLAGS-$(notdir $(@D)))
	cmd_compile.m = $(cmd_compile.c) -DL_$(patsubst %$(suffix $(notdir $@)),%,$(notdir $@))
	cmd_compile.h = $(HOSTCC) $(HOSTCFLAGS) -c -o $@ $<
	cmd_strip = $(STRIPCMD) $@
	cmd_link = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -I$(srcdir) $(LDFLAGS)
	cmd_link.h = $(HOSTCC) $(HOSTCFLAGS) $(HOST_LDFLAGS) $^ -o $@
	cmd_ar = $(AR) $(ARFLAGS) $@ $^
	compile.c = $(disp_compile.c) $(cmd_compile.c)
	compile.m = $(disp_compile.c) $(cmd_compile.m)
	compile.h = $(disp_compile.h) $(cmd_compile.h)
	do_strip = $(disp_strip) $(cmd_strip)
	do_link = $(disp_link) $(cmd_link)
	do_link.h = $(disp_link.h) $(cmd_link.h)
	do_ar = $(disp_ar) $(cmd_ar)

	ifdef rules-mak-rules
	.SUFFIXES: .c .S .o .os .om .osm .oS .so .a .s .i .E

	# generic rules
	%.o: %.c ; $(compile.c)
	%.os: %.c ; $(compile.c) $(CFLAGS_PIC)
	%.o: ; $(compile.c)
	%.os: ; $(compile.c) $(CFLAGS_PIC)
	%.om: ; $(compile.m)
	%.osm: ; $(compile.m) $(CFLAGS_PIC)

	endif # rules-mak-rules

	.PHONY: dummy