| # Rules.make for busybox |
| # |
| # Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
| # |
| # 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 := 1.00-rc3 |
| BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z") |
| |
| |
| #-------------------------------------------------------- |
| # With a modern GNU make(1) (highly recommended, that's what all the |
| # developers use), all of the following configuration values can be |
| # overridden at the command line. For example: |
| # make CROSS=powerpc-linux- BB_SRC_DIR=$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 = $(top_builddir)/.config |
| |
| # What OS are you compiling busybox for? This allows you to include |
| # OS specific things, syscall overrides, etc. |
| TARGET_OS=linux |
| |
| # Select the compiler needed to build binaries for your development system |
| HOSTCC = gcc |
| HOSTCFLAGS= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer |
| |
| # Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc. |
| LC_ALL:= C |
| |
| # If you want to add some simple compiler switches (like -march=i686), |
| # especially from the command line, use this instead of CFLAGS directly. |
| # For optimization overrides, it's better still to set OPTIMIZATION. |
| CFLAGS_EXTRA=$(subst ",, $(strip $(EXTRA_CFLAGS_OPTIONS))) |
| |
| # If you have a "pristine" source directory, point BB_SRC_DIR to it. |
| # Experimental and incomplete; tell the mailing list |
| # <busybox@busybox.net> if you do or don't like it so far. |
| BB_SRC_DIR= |
| |
| # To compile vs some other alternative libc, you may need to use/adjust |
| # the following lines to meet your needs... |
| # |
| # If you are using Red Hat 6.x with the compatible RPMs (for developing under |
| # Red Hat 5.x and glibc 2.0) uncomment the following. Be sure to read about |
| # using the compatible RPMs (compat-*) at http://www.redhat.com ! |
| #LIBCDIR:=/usr/i386-glibc20-linux |
| # |
| # For other libraries, you are on your own. But these may (or may not) help... |
| #LDFLAGS+=-nostdlib |
| #LIBRARIES:=$(LIBCDIR)/lib/libc.a -lgcc |
| #CROSS_CFLAGS+=-nostdinc -I$(LIBCDIR)/include -I$(GCCINCDIR) |
| #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$(srcdir) |
| ARFLAGS=-r |
| |
| #-------------------------------------------------------- |
| export VERSION BUILDTIME TOPDIR HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP |
| ifeq ($(strip $(TARGET_ARCH)),) |
| TARGET_ARCH=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \ |
| -e 's/i.86/i386/' \ |
| -e 's/sparc.*/sparc/' \ |
| -e 's/arm.*/arm/g' \ |
| -e 's/m68k.*/m68k/' \ |
| -e 's/ppc/powerpc/g' \ |
| -e 's/v850.*/v850/g' \ |
| -e 's/sh[234]/sh/' \ |
| -e 's/mips-.*/mips/' \ |
| -e 's/mipsel-.*/mipsel/' \ |
| -e 's/cris.*/cris/' \ |
| ) |
| endif |
| |
| # Pull in the user's busybox configuration |
| ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),) |
| -include $(top_builddir)/.config |
| endif |
| |
| # A nifty macro to make testing gcc features easier |
| check_gcc=$(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \ |
| then echo "$(1)"; else echo "$(2)"; fi) |
| |
| #-------------------------------------------------------- |
| # Arch specific compiler optimization stuff should go here. |
| # Unless you want to override the defaults, do not set anything |
| # for OPTIMIZATION... |
| |
| # use '-Os' optimization if available, else use -O2 |
| OPTIMIZATION= |
| OPTIMIZATION=${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) $(OPTIMIZATIONS) -D_GNU_SOURCE -DNDEBUG |
| LDFLAGS += -s -Wl,-warn-common |
| STRIPCMD:=$(STRIP) --remove-section=.note --remove-section=.comment |
| endif |
| ifeq ($(strip $(CONFIG_STATIC)),y) |
| LDFLAGS += --static |
| endif |
| |
| ifeq ($(strip $(PREFIX)),) |
| PREFIX:=`pwd`/_install |
| endif |
| |
| # Additional complications due to support for pristine source dir. |
| # Include files in the build directory should take precedence over |
| # the copy in BB_SRC_DIR, both during the compilation phase and the |
| # shell script that finds the list of object files. |
| # Work in progress by <ldoolitt@recycle.lbl.gov>. |
| # |
| ifneq ($(strip $(BB_SRC_DIR)),) |
| VPATH:=$(BB_SRC_DIR) |
| endif |
| |
| 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) |
| |
| .PHONY: dummy |
| |
| |
| .EXPORT_ALL_VARIABLES: |
| |