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- # 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 $(top_builddir)/.config
- endif
- #--------------------------------------------------------
- PROG := busybox
- MAJOR_VERSION :=1
- MINOR_VERSION :=1
- SUBLEVEL_VERSION:=0
- EXTRAVERSION :=
- VERSION :=$(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
- # MAKEFILES = $(top_builddir)/.config
- RM = rm
- RM_F = $(RM) -f
- LN = ln
- LN_S = $(LN) -s
- MKDIR = mkdir
- MKDIR_P = $(MKDIR) -p
- MV = mv
- CP = cp
- # What OS are you compiling busybox for? This allows you to include
- # OS specific things, syscall overrides, etc.
- TARGET_OS=linux
- # Select the compiler needed to build binaries for your development system
- HOSTCC = gcc
- HOSTCFLAGS= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
- # Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
- LC_ALL:= C
- # If you want to add some simple compiler switches (like -march=i686),
- # especially from the command line, use this instead of CFLAGS directly.
- # For optimization overrides, it's better still to set OPTIMIZATION.
- CFLAGS_EXTRA=$(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 -I$(srcdir)
- ARFLAGS=cru
- # gcc centric. Perhaps fiddle with findstring gcc,$(CC) for the rest
- # get the CC MAJOR/MINOR version
- CC_MAJOR:=$(shell printf "%02d" $(shell echo __GNUC__ | $(CC) -E -xc - | tail -n 1))
- CC_MINOR:=$(shell printf "%02d" $(shell echo __GNUC_MINOR__ | $(CC) -E -xc - | tail -n 1))
- #--------------------------------------------------------
- export VERSION BUILDTIME HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP
- ifeq ($(strip $(TARGET_ARCH)),)
- TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
- -e 's/i.86/i386/' \
- -e 's/sparc.*/sparc/' \
- -e 's/arm.*/arm/g' \
- -e 's/m68k.*/m68k/' \
- -e 's/ppc/powerpc/g' \
- -e 's/v850.*/v850/g' \
- -e 's/sh[234]/sh/' \
- -e 's/mips-.*/mips/' \
- -e 's/mipsel-.*/mipsel/' \
- -e 's/cris.*/cris/' \
- )
- endif
- # A nifty macro to make testing gcc features easier
- check_gcc=$(shell \
- if [ "$(1)" != "" ]; then \
- if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \
- then echo "$(1)"; else echo "$(2)"; fi \
- fi)
- # Setup some shortcuts so that silent mode is silent like it should be
- ifeq ($(subst s,,$(MAKEFLAGS)),$(MAKEFLAGS))
- export MAKE_IS_SILENT=n
- SECHO=@echo
- else
- export MAKE_IS_SILENT=y
- SECHO=-@false
- endif
- CFLAGS+=$(call check_gcc,-funsigned-char,)
- #--------------------------------------------------------
- # Arch specific compiler optimization stuff should go here.
- # Unless you want to override the defaults, do not set anything
- # for OPTIMIZATION...
- # use '-Os' optimization if available, else use -O2
- OPTIMIZATION:=$(call check_gcc,-Os,-O2)
- # Some nice architecture specific optimizations
- ifeq ($(strip $(TARGET_ARCH)),arm)
- OPTIMIZATION+=-fstrict-aliasing
- endif
- ifeq ($(strip $(TARGET_ARCH)),i386)
- OPTIMIZATION+=$(call check_gcc,-march=i386,)
- OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,)
- OPTIMIZATION+=$(call check_gcc,-falign-functions=0 -falign-jumps=0 -falign-loops=0,\
- -malign-functions=0 -malign-jumps=0 -malign-loops=0)
- endif
- OPTIMIZATIONS:=$(OPTIMIZATION) -fomit-frame-pointer
- #
- #--------------------------------------------------------
- # If you're going to do a lot of builds with a non-vanilla configuration,
- # it makes sense to adjust parameters above, so you can type "make"
- # by itself, instead of following it by the same half-dozen overrides
- # every time. The stuff below, on the other hand, is probably less
- # prone to casual user adjustment.
- #
- ifeq ($(strip $(CONFIG_LFS)),y)
- # For large file summit support
- CFLAGS+=-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
- endif
- ifeq ($(strip $(CONFIG_DMALLOC)),y)
- # For testing mem leaks with dmalloc
- CFLAGS+=-DDMALLOC
- LIBRARIES:=-ldmalloc
- else
- ifeq ($(strip $(CONFIG_EFENCE)),y)
- LIBRARIES:=-lefence
- endif
- endif
- ifeq ($(strip $(CONFIG_DEBUG)),y)
- CFLAGS +=$(WARNINGS) -g -D_GNU_SOURCE
- LDFLAGS +=-Wl,-warn-common
- STRIPCMD:=/bin/true -Not_stripping_since_we_are_debugging
- else
- CFLAGS+=$(WARNINGS) $(OPTIMIZATIONS) -D_GNU_SOURCE -DNDEBUG
- LDFLAGS += -Wl,-warn-common
- STRIPCMD:=$(STRIP) -s --remove-section=.note --remove-section=.comment
- endif
- ifeq ($(strip $(CONFIG_STATIC)),y)
- LDFLAGS += --static
- endif
- ifeq ($(strip $(CONFIG_SELINUX)),y)
- LIBRARIES += -lselinux
- endif
- ifeq ($(strip $(PREFIX)),)
- PREFIX:=`pwd`/_install
- endif
- # Additional complications due to support for pristine source dir.
- # Include files in the build directory should take precedence over
- # the copy in top_srcdir, both during the compilation phase and the
- # shell script that finds the list of object files.
- # Work in progress by <ldoolitt@recycle.lbl.gov>.
- OBJECTS:=$(APPLET_SOURCES:.c=.o) busybox.o usage.o applets.o
- 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
- .PHONY: dummy
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