# Rules.make for busybox # # Copyright (C) 2002 Erik Andersen # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # PROG := busybox VERSION := 0.61.pre BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z") HOSTCC := gcc HOSTCFLAGS:= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer # What OS are you compiling busybox for? This allows you to include # OS specific things, syscall overrides, etc. TARGET_OS:=linux # With a modern GNU make(1) (highly recommended, that's what all the # developers use), all of the following configuration values can be # overridden at the command line. For example: # make CROSS=powerpc-linux- BB_SRC_DIR=$HOME/busybox PREFIX=/mnt/app # 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:=#-Werror # If you want a static binary, turn this on. DOSTATIC:=false # Set the following to `true' to make a debuggable build. # Leave this set to `false' for production use. DODEBUG:=false # This enables compiling with dmalloc ( http://dmalloc.com/ ) # which is an excellent public domain mem leak and malloc problem # detector. To enable dmalloc, before running busybox you will # want to first set up your environment. # eg: `export DMALLOC_OPTIONS=debug=0x34f47d83,inter=100,log=logfile` # The debug= value is generated using the following command # dmalloc -p log-stats -p log-non-free -p log-bad-space -p log-elapsed-time \ # -p check-fence -p check-heap -p check-lists -p check-blank \ # -p check-funcs -p realloc-copy -p allow-free-null # Do not enable this for production builds... DODMALLOC:=false # Electric-fence is another very useful malloc debugging library. # Do not enable this for production builds... DOEFENCE:=false # If you want large file summit support, turn this on. # This has no effect if you don't have a kernel with lfs # support, and a system with libc-2.1.3 or later. # Some of the programs that can benefit from lfs support # are dd, gzip, mount, tar, and mkfs_minix. # LFS allows you to use the above programs for files # larger than 2GB! DOLFS:=false # If you have a "pristine" source directory, point BB_SRC_DIR to it. # Experimental and incomplete; tell the mailing list # if you do or don't like it so far. BB_SRC_DIR:= # If you are running a cross compiler, you may want to set CROSS # to something more interesting, like "arm-linux-". CROSS:= CC := $(CROSS)gcc AR := $(CROSS)ar AS := $(CROSS)as LD := $(CROSS)ld NM := $(CROSS)nm STRIP := $(CROSS)strip CPP := $(CC) -E MAKEFILES := $(TOPDIR).config export VERSION BUILDTIME TOPDIR HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP # To compile vs uClibc, just use the compiler wrapper built by uClibc... # Everything should compile and work as expected these days... #CC:=/usr/i386-linux-uclibc/bin/i386-uclibc-gcc # To compile vs some other alternative libc, you may need to use/adjust # the following lines to meet your needs... # # If you are using Red Hat 6.x with the compatible RPMs (for developing under # Red Hat 5.x and glibc 2.0) uncomment the following. Be sure to read about # using the compatible RPMs (compat-*) at http://www.redhat.com ! #LIBCDIR:=/usr/i386-glibc20-linux # # The following is used for libc5 (if you install altgcc and libc5-altdev # on a Debian system). #LIBCDIR:=/usr/i486-linuxlibc1 # # For other libraries, you are on your own... #LDFLAGS+=-nostdlib #LIBRARIES:=$(LIBCDIR)/lib/libc.a -lgcc #CROSS_CFLAGS+=-nostdinc -I$(LIBCDIR)/include -I$(GCCINCDIR) #GCCINCDIR:=$(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp") WARNINGS:=-Wall -Wstrict-prototypes -Wshadow CFLAGS:=-I$(TOPDIR)include ARFLAGS:=-r TARGET_ARCH:=${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/' \ } #-------------------------------------------------------- # 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 := ${shell if $(CC) -Os -S -o /dev/null -xc /dev/null \ >/dev/null 2>&1; then echo "-Os"; else echo "-O2" ; fi} # Some nice architecture specific optimizations ifeq ($(strip $(TARGET_ARCH)),arm) OPTIMIZATION+=-fstrict-aliasing endif ifeq ($(strip $(TARGET_ARCH)),i386) OPTIMIZATION+=-march=i386 OPTIMIZATION+=${shell if $(CC) -mpreferred-stack-boundary=2 -S -o /dev/null -xc \ /dev/null >/dev/null 2>&1; then echo "-mpreferred-stack-boundary=2"; fi} OPTIMIZATION+=${shell if $(CC) -falign-functions=1 -falign-jumps=0 -falign-loops=0 \ -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo \ "-falign-functions=1 -falign-jumps=0 -falign-loops=0"; else \ if $(CC) -malign-functions=0 -malign-jumps=0 -S -o /dev/null -xc \ /dev/null >/dev/null 2>&1; then echo "-malign-functions=0 -malign-jumps=0"; fi; fi} endif OPTIMIZATIONS:=$(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 $(DOLFS)),true) # For large file summit support CFLAGS+=-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 endif ifeq ($(strip $(DODMALLOC)),true) # For testing mem leaks with dmalloc CFLAGS+=-DDMALLOC LIBRARIES:=-ldmalloc # Force debug=true, since this is useless when not debugging... DODEBUG:=true else ifeq ($(strip $(DOEFENCE)),true) LIBRARIES:=-lefence # Force debug=true, since this is useless when not debugging... DODEBUG:=true endif endif ifeq ($(strip $(DODEBUG)),true) CFLAGS +=$(WARNINGS) -g -D_GNU_SOURCE LDFLAGS +=-Wl,-warn-common STRIPCMD:=/bin/true -Not_stripping_since_we_are_debugging else CFLAGS += $(WARNINGS) $(OPTIMIZATIONS) -D_GNU_SOURCE LDFLAGS += -s -Wl,-warn-common STRIPCMD:=$(STRIP) --remove-section=.note --remove-section=.comment endif ifeq ($(strip $(DOSTATIC)),true) LDFLAGS += --static endif ifndef $(PREFIX) PREFIX:=`pwd`/_install endif # Additional complications due to support for pristine source dir. # Include files in the build directory should take precedence over # the copy in BB_SRC_DIR, both during the compilation phase and the # shell script that finds the list of object files. # Work in progress by . # ifneq ($(strip $(BB_SRC_DIR)),) VPATH:=$(BB_SRC_DIR) endif CFLAGS += -DBB_VER='"$(VERSION)"' CFLAGS += -DBB_BT='"$(BUILDTIME)"' 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) %.o: %.c $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $< ifdef _FASTDEP_ALL_SUB_DIRS fastdep: dummy $(TOPDIR)scripts/mkdep $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -- $(wildcard *.[chS]) > .depend ifdef ALL_SUB_DIRS $(MAKE) $(patsubst %,_sfdep_%,$(ALL_SUB_DIRS)) _FASTDEP_ALL_SUB_DIRS="$(ALL_SUB_DIRS)" endif $(patsubst %,_sfdep_%,$(_FASTDEP_ALL_SUB_DIRS)): $(MAKE) -C $(patsubst _sfdep_%,%,$@) fastdep endif .PHONY: dummy .EXPORT_ALL_VARIABLES: