# Rules.make for busybox
#
-# Copyright (C) 2002 Erik Andersen <andersee@debian.org>
+# 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
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
+#--------------------------------------------------------
PROG := busybox
-VERSION := 0.61.pre
+VERSION := 1.00
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 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 = $(top_builddir)/.config
+
+# What OS are you compiling busybox for? This allows you to include
+# OS specific things, syscall overrides, etc.
+TARGET_OS=linux
+
+# Select the compiler needed to build binaries for your development system
+HOSTCC = gcc
+HOSTCFLAGS= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
+
+# Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
+LC_ALL:= C
# If you want to add some simple compiler switches (like -march=i686),
# especially from the command line, use this instead of CFLAGS directly.
# For optimization overrides, it's better still to set OPTIMIZATION.
-CFLAGS_EXTRA:=
-
-# If you want a static binary, turn this on.
-DOSTATIC:=false
-
-# Set the following to `true' to make a debuggable build.
-# Leave this set to `false' for production use.
-DODEBUG:=false
-
-# This enables compiling with dmalloc ( http://dmalloc.com/ )
-# which is an excellent public domain mem leak and malloc problem
-# detector. To enable dmalloc, before running busybox you will
-# want to first set up your environment.
-# eg: `export DMALLOC_OPTIONS=debug=0x34f47d83,inter=100,log=logfile`
-# The debug= value is generated using the following command
-# dmalloc -p log-stats -p log-non-free -p log-bad-space -p log-elapsed-time \
-# -p check-fence -p check-heap -p check-lists -p check-blank \
-# -p check-funcs -p realloc-copy -p allow-free-null
-# Do not enable this for production builds...
-DODMALLOC:=false
-
-# Electric-fence is another very useful malloc debugging library.
-# Do not enable this for production builds...
-DOEFENCE:=false
-
-# If you want large file summit support, turn this on.
-# This has no effect if you don't have a kernel with lfs
-# support, and a system with libc-2.1.3 or later.
-# Some of the programs that can benefit from lfs support
-# are dd, gzip, mount, tar, and mkfs_minix.
-# LFS allows you to use the above programs for files
-# larger than 2GB!
-DOLFS:=false
+CFLAGS_EXTRA=$(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:=
-
-# 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 := $(TOPDIR).config
-export VERSION BUILDTIME TOPDIR HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP
-
-
-# To compile vs uClibc, just use the compiler wrapper built by uClibc...
-# Everything should compile and work as expected these days...
-#CC:=/usr/i386-linux-uclibc/usr/bin/i386-uclibc-gcc
+BB_SRC_DIR=
# To compile vs some other alternative libc, you may need to use/adjust
# the following lines to meet your needs...
# using the compatible RPMs (compat-*) at http://www.redhat.com !
#LIBCDIR:=/usr/i386-glibc20-linux
#
-# The following is used for libc5 (if you install altgcc and libc5-altdev
-# on a Debian system).
-#LIBCDIR:=/usr/i486-linuxlibc1
-#
-# For other libraries, you are on your own...
+# For other libraries, you are on your own. But these may (or may not) help...
#LDFLAGS+=-nostdlib
#LIBRARIES:=$(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$(TOPDIR)include
-ARFLAGS:=-r
+WARNINGS=-Wall -Wstrict-prototypes -Wshadow
+CFLAGS=-I$(top_builddir)/include -I$(top_srcdir)/include -I$(srcdir)
+ARFLAGS=-r
-TARGET_ARCH:=${shell $(CC) -dumpmachine | sed -e s'/-.*//' \
+#--------------------------------------------------------
+export VERSION BUILDTIME TOPDIR HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP
+ifeq ($(strip $(TARGET_ARCH)),)
+TARGET_ARCH=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
-e 's/i.86/i386/' \
-e 's/sparc.*/sparc/' \
-e 's/arm.*/arm/g' \
-e 's/ppc/powerpc/g' \
-e 's/v850.*/v850/g' \
-e 's/sh[234]/sh/' \
- -e 's/mips.*/mips/' \
- }
+ -e 's/mips-.*/mips/' \
+ -e 's/mipsel-.*/mipsel/' \
+ -e 's/cris.*/cris/' \
+ )
+endif
+
+# Pull in the user's busybox configuration
+ifeq ($(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.
# for OPTIMIZATION...
# use '-Os' optimization if available, else use -O2
-OPTIMIZATION := ${shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
- then echo "-Os"; else echo "-O2" ; fi}
+OPTIMIZATION=
+OPTIMIZATION=${call check_gcc,-Os,-O2}
# Some nice architecture specific optimizations
ifeq ($(strip $(TARGET_ARCH)),arm)
OPTIMIZATION+=-fstrict-aliasing
endif
ifeq ($(strip $(TARGET_ARCH)),i386)
- OPTIMIZATION+=-march=i386
- OPTIMIZATION+=${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 $(CC) -malign-functions=0 -malign-jumps=0 -S -o /dev/null -xc \
- /dev/null >/dev/null 2>&1; then echo "-malign-functions=0 -malign-jumps=0"; fi; fi}
+ OPTIMIZATION+=$(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:=$(OPTIMIZATION) -fomit-frame-pointer
+OPTIMIZATIONS=$(OPTIMIZATION) -fomit-frame-pointer
#
#--------------------------------------------------------
# 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 $(DOLFS)),true)
+ifeq ($(strip $(CONFIG_LFS)),y)
# For large file summit support
- CFLAGS+=-D_FILE_OFFSET_BITS=64 -D__USE_FILE_OFFSET64
+ CFLAGS+=-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
endif
-ifeq ($(strip $(DODMALLOC)),true)
+ifeq ($(strip $(CONFIG_DMALLOC)),y)
# For testing mem leaks with dmalloc
CFLAGS+=-DDMALLOC
LIBRARIES:=-ldmalloc
- # Force debug=true, since this is useless when not debugging...
- DODEBUG:=true
else
- ifeq ($(strip $(DOEFENCE)),true)
+ ifeq ($(strip $(CONFIG_EFENCE)),y)
LIBRARIES:=-lefence
- # Force debug=true, since this is useless when not debugging...
- DODEBUG:=true
endif
endif
-ifeq ($(strip $(DODEBUG)),true)
+ifeq ($(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) $(OPTIMIZATIONS) -D_GNU_SOURCE
+ CFLAGS+=$(WARNINGS) $(OPTIMIZATIONS) -D_GNU_SOURCE -DNDEBUG
LDFLAGS += -s -Wl,-warn-common
STRIPCMD:=$(STRIP) --remove-section=.note --remove-section=.comment
endif
-ifeq ($(strip $(DOSTATIC)),true)
+ifeq ($(strip $(CONFIG_STATIC)),y)
LDFLAGS += --static
endif
-ifndef $(PREFIX)
+ifeq ($(strip $(PREFIX)),)
PREFIX:=`pwd`/_install
endif
VPATH:=$(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
# 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:
projects / oweals / busybox.git / blobdiff