# Makefile for busybox
#
-# Copyright (C) 1999-2000 Erik Andersen <andersee@debian.org>
-# Copyright (C) 2000 Karl M. Hegbloom <karlheg@debian.org>
+# Copyright (C) 1999,2000,2001 Erik Andersen <andersee@debian.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
#
PROG := busybox
-VERSION := 0.43
+VERSION := 0.50pre
BUILDTIME := $(shell TZ=UTC date --utc "+%Y.%m.%d-%H:%M%z")
export VERSION
+# With a modern GNU make(1) (highly recommended, that's what all the
+# developers use), all of the following configuration values can be
+# overridden at the command line. For example:
+# make CROSS=powerpc-linux- BB_SRC_DIR=$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 =
+
+# 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.
# eg: `make DODEBUG=true tests'
+# Do not enable this for production builds...
DODEBUG = false
-# If you want a static binary, turn this on.
-DOSTATIC = false
+# Setting this to `true' will cause busybox to directly use the system's
+# password and group functions. Assuming you use GNU libc, when this is
+# `true', you will need to install the /etc/nsswitch.conf configuration file
+# and the required libnss_* libraries. This generally makes your embedded
+# system quite a bit larger... If you leave this off, busybox will directly
+# use the /etc/password, /etc/group files (and your system will be smaller, and
+# I will get fewer emails asking about how glibc NSS works). Enabling this adds
+# just 1.4k to the binary size (which is a _lot_ less then glibc NSS costs),
+# Most people will want to leave this set to false.
+USE_SYSTEM_PWD_GRP = false
-# This will choke on a non-debian system
-ARCH =`uname -m | sed -e 's/i.86/i386/' | sed -e 's/sparc.*/sparc/'`
+# 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=0x14f47d83,inter=100,log=logfile`
+# Do not enable this for production builds...
+DODMALLOC = false
-CC = gcc
+# 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
-GCCMAJVERSION = $(shell $(CC) --version | sed -n "s/^[^0-9]*\([0-9]\)\.\([0-9].*\)[\.].*/\1/p")
-GCCMINVERSION = $(shell $(CC) --version | sed -n "s/^[^0-9]*\([0-9]\)\.\([0-9].*\)[\.].*/\2/p")
+# If you have a "pristine" source directory, point BB_SRC_DIR to it.
+# Experimental and incomplete; tell the mailing list
+# <busybox@opensource.lineo.com> 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 this
+# to something more interesting, like "powerpc-linux-".
+CROSS =
+CC = $(CROSS)gcc
+AR = $(CROSS)ar
+STRIPTOOL = $(CROSS)strip
-GCCSUPPORTSOPTSIZE = $(shell \
-if ( test $(GCCMAJVERSION) -eq 2 ) ; then \
- if ( test $(GCCMINVERSION) -ge 66 ) ; then \
- echo "true"; \
- else \
- echo "false"; \
- fi; \
-else \
- if ( test $(GCCMAJVERSION) -gt 2 ) ; then \
- echo "true"; \
- else \
- echo "false"; \
- fi; \
-fi; )
+# To compile vs uClibc, just use the compiler wrapper built by uClibc...
+# Isn't that easy? Right now, uClibc needs BB_FEATURE_NFSMOUNT disabled
+# since uClibc's nfs support isn't ready yet.
+#CC = ../uClibc/extra/gcc-uClibc/gcc-uClibc-i386
+# To compile vs some other alternative libc, you may need to use/adjust
+# the following lines to meet your needs...
+#LIBCDIR=/usr/i486-linuxlibc1/
+#LDFLAGS+=-nostdlib
+#LIBRARIES = $(LIBCDIR)/libc.a -lgcc
+#CROSS_CFLAGS+=-nostdinc -I$(LIBCDIR)/include -I$(GCCINCDIR)
+#GCCINCDIR = $(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp")
-ifeq ($(GCCSUPPORTSOPTSIZE), true)
- OPTIMIZATION = -Os
-else
- OPTIMIZATION = -O2
-endif
+# 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)
-# Allow alternative stripping tools to be used...
-ifndef $(STRIPTOOL)
- STRIPTOOL = strip
-endif
+WARNINGS = -Wall
+#
+#--------------------------------------------------------
+# If you're going to do a lot of builds with a non-vanilla configuration,
+# it makes sense to adjust parameters above, so you can type "make"
+# by itself, instead of following it by the same half-dozen overrides
+# every time. The stuff below, on the other hand, is probably less
+# prone to casual user adjustment.
+#
-# -D_GNU_SOURCE is needed because environ is used in init.c
-ifeq ($(DODEBUG),true)
- CFLAGS += -Wall -g -D_GNU_SOURCE
- LDFLAGS =
- STRIP =
+ifeq ($(strip $(DOLFS)),true)
+ # For large file summit support
+ CFLAGS+=-D_FILE_OFFSET_BITS=64
+endif
+ifeq ($(strip $(DODMALLOC)),true)
+ # For testing mem leaks with dmalloc
+ CFLAGS+=-DDMALLOC
+ LIBRARIES = -ldmalloc
+ # Force debug=true, since this is useless when not debugging...
+ DODEBUG = true
+endif
+ifeq ($(strip $(DODEBUG)),true)
+ CFLAGS += $(WARNINGS) -g -D_GNU_SOURCE
+ LDFLAGS += -Wl,-warn-common
+ STRIP =
else
- CFLAGS += -Wall $(OPTIMIZATION) -fomit-frame-pointer -fno-builtin -D_GNU_SOURCE
- LDFLAGS = -s
+ CFLAGS += $(WARNINGS) $(OPTIMIZATION) -fomit-frame-pointer -D_GNU_SOURCE
+ LDFLAGS += -s -Wl,-warn-common
STRIP = $(STRIPTOOL) --remove-section=.note --remove-section=.comment $(PROG)
- #Only staticly link when _not_ debugging
- ifeq ($(DOSTATIC),true)
- LDFLAGS += --static
- endif
+endif
+ifeq ($(strip $(DOSTATIC)),true)
+ LDFLAGS += --static
+ #
+ #use '-ffunction-sections -fdata-sections' and '--gc-sections' (if they
+ # work) to try and strip out any unused junk. Doesn't do much for me,
+ # but you may want to give it a shot...
+ #
+ #ifeq ($(shell $(CC) -ffunction-sections -fdata-sections -S \
+ # -o /dev/null -xc /dev/null 2>/dev/null && $(LD) \
+ # --gc-sections -v >/dev/null && echo 1),1)
+ # CFLAGS += -ffunction-sections -fdata-sections
+ # LDFLAGS += --gc-sections
+ #endif
endif
ifndef $(PREFIX)
PREFIX = `pwd`/_install
endif
-LIBRARIES =
-OBJECTS = $(shell ./busybox.sh) busybox.o messages.o utility.o
+# Additional complications due to support for pristine source dir.
+# Include files in the build directory should take precedence over
+# the copy in BB_SRC_DIR, both during the compilation phase and the
+# shell script that finds the list of object files.
+# Work in progress by <ldoolitt@recycle.lbl.gov>.
+#
+ifneq ($(strip $(BB_SRC_DIR)),)
+ VPATH = $(BB_SRC_DIR)
+endif
+#ifneq ($(strip $(VPATH)),)
+# CFLAGS += -I- -I. $(patsubst %,-I%,$(subst :, ,$(VPATH)))
+#endif
+
+# We need to set APPLET_SOURCES to something like
+# $(shell busybox.sh Config.h)
+# but in a manner that works with VPATH and BB_SRC_DIR.
+# Possible ways to approach this:
+#
+# 1. Explicitly search through .:$(VPATH) for busybox.sh and config.h,
+# then $(shell $(BUSYBOX_SH) $(CONFIG_H) $(BB_SRC_DIR))
+#
+# 2. Explicity search through .:$(VPATH) for slist.mk,
+# then $(shell $(MAKE) -f $(SLIST_MK) VPATH=$(VPATH) BB_SRC_DIR=$(BB_SRC_DIR))
+#
+# 3. Create slist.mk in this directory, with commands embedded in
+# a $(shell ...) command, and $(MAKE) it immediately.
+#
+# 4. Use a real rule within this makefile to create a file that sets
+# APPLET_SOURCE_LIST, then include that file. Has complications
+# with the first trip through the makefile (before processing the
+# include) trying to do too much, and a spurious warning the first
+# time make is run.
+#
+# This is option 3:
+#
+#APPLET_SOURCES = $(shell \
+# echo -e 'all: busybox.sh Config.h\n\t@ $$(SHELL) $$^ $$(BB_SRC_DIR)' >slist.mk; \
+# make -f slist.mk VPATH=$(VPATH) BB_SRC_DIR=$(BB_SRC_DIR) \
+#)
+# And option 4:
+-include applet_source_list
+
+OBJECTS = $(APPLET_SOURCES:.c=.o) busybox.o messages.o usage.o utility.o
+CFLAGS += $(CROSS_CFLAGS)
CFLAGS += -DBB_VER='"$(VERSION)"'
CFLAGS += -DBB_BT='"$(BUILDTIME)"'
ifdef BB_INIT_SCRIPT
CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"'
endif
-all: busybox busybox.links docs
+ifneq ($(strip $(USE_SYSTEM_PWD_GRP)),true)
+ PWD_GRP = pwd_grp
+ PWD_GRP_DIR = $(BB_SRC_DIR)$(PWD_GRP)
+ PWD_LIB = libpwd.a
+ LIBRARIES += $(PWD_LIB)
+ PWD_CSRC=__getpwent.c pwent.c getpwnam.c getpwuid.c putpwent.c getpw.c \
+ fgetpwent.c __getgrent.c grent.c getgrnam.c getgrgid.c fgetgrent.c \
+ initgroups.c setgroups.c
+ PWD_OBJS=$(patsubst %.c,$(PWD_GRP)/%.o, $(PWD_CSRC))
+ PWD_CFLAGS = -I$(PWD_GRP_DIR)
+else
+ CFLAGS += -DUSE_SYSTEM_PWD_GRP
+endif
+
+# Put user-supplied flags at the end, where they
+# have a chance of winning.
+CFLAGS += $(CFLAGS_EXTRA)
+
+.EXPORT_ALL_VARIABLES:
+
+all: applet_source_list busybox busybox.links doc
-busybox: $(OBJECTS)
+applet_source_list: busybox.sh Config.h
+ (echo -n "APPLET_SOURCES := "; $(SHELL) $^ $(BB_SRC_DIR)) > $@
+
+doc: olddoc
+
+# Old Docs...
+olddoc: docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html
+
+docs/BusyBox.txt: docs/busybox.pod
+ @echo
+ @echo BusyBox Documentation
+ @echo
+ -mkdir -p docs
+ -pod2text $< > $@
+
+docs/BusyBox.1: docs/busybox.pod
+ - mkdir -p docs
+ - pod2man --center=BusyBox --release="version $(VERSION)" \
+ $< > $@
+
+docs/BusyBox.html: docs/busybox.lineo.com/BusyBox.html
+ - mkdir -p docs
+ -@ rm -f docs/BusyBox.html
+ -@ ln -s busybox.lineo.com/BusyBox.html docs/BusyBox.html
+
+docs/busybox.lineo.com/BusyBox.html: docs/busybox.pod
+ -@ mkdir -p docs/busybox.lineo.com
+ - pod2html --noindex $< > \
+ docs/busybox.lineo.com/BusyBox.html
+ -@ rm -f pod2html*
+
+
+# New docs based on DOCBOOK SGML
+newdoc: docs/busybox.txt docs/busybox.pdf docs/busybox/busyboxdocumentation.html
+
+docs/busybox.txt: docs/busybox.sgml
+ @echo
+ @echo BusyBox Documentation
+ @echo
+ - mkdir -p docs
+ (cd docs; sgmltools -b txt busybox.sgml)
+
+docs/busybox.dvi: docs/busybox.sgml
+ - mkdir -p docs
+ (cd docs; sgmltools -b dvi busybox.sgml)
+
+docs/busybox.ps: docs/busybox.sgml
+ - mkdir -p docs
+ (cd docs; sgmltools -b ps busybox.sgml)
+
+docs/busybox.pdf: docs/busybox.ps
+ - mkdir -p docs
+ (cd docs; ps2pdf busybox.ps)
+
+docs/busybox/busyboxdocumentation.html: docs/busybox.sgml
+ - mkdir -p docs
+ (cd docs/busybox.lineo.com; sgmltools -b html ../busybox.sgml)
+
+
+busybox: $(PWD_LIB) $(OBJECTS)
$(CC) $(LDFLAGS) -o $@ $^ $(LIBRARIES)
$(STRIP)
-
-busybox.links: busybox.def.h
- - ./busybox.mkll | sort >$@
-docs:
- $(MAKE) -C docs
-
-regexp.o nfsmount.o: %.o: %.h
-$(OBJECTS): %.o: busybox.def.h internal.h %.c
+# Without VPATH, rule expands to "/bin/sh busybox.mkll Config.h applets.h"
+# but with VPATH, some or all of those file names are resolved to the
+# directories in which they live.
+busybox.links: busybox.mkll Config.h applets.h
+ - $(SHELL) $^ >$@
+
+nfsmount.o cmdedit.o: %.o: %.h
+$(OBJECTS): %.o: %.c Config.h busybox.h applets.h Makefile
+ $(CC) $(CFLAGS) -I- -I. $(patsubst %,-I%,$(subst :, ,$(BB_SRC_DIR))) -c $< -o $*.o
+
+$(PWD_OBJS): %.o: %.c Config.h busybox.h applets.h Makefile
+ - mkdir -p $(PWD_GRP)
+ $(CC) $(CFLAGS) $(PWD_CFLAGS) -c $< -o $*.o
+
+$(PWD_LIB): $(PWD_OBJS)
+ $(AR) $(ARFLAGS) $(PWD_LIB) $^
+
+usage.o: usage.h
+
+utility.o: loop.h
+
+loop.h: mk_loop_h.sh
+ @ $(SHELL) $< > $@
test tests:
cd tests && $(MAKE) all
clean:
- - rm -f busybox.links *~ *.o core
- - rm -rf _install
- cd tests && $(MAKE) clean
+ - rm -f docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html \
+ docs/busybox.lineo.com/BusyBox.html
+ - rm -f docs/busybox.txt docs/busybox.dvi docs/busybox.ps \
+ docs/busybox.pdf docs/busybox.lineo.com/busybox.html
+ - rm -f multibuild.log Config.h.orig
+ - rm -rf docs/busybox _install $(PWD_LIB)
+ - rm -f busybox.links loop.h *~ slist.mk core applet_source_list
+ - find -name \*.o -exec rm -f {} \;
distclean: clean
- rm -f busybox
- cd tests && $(MAKE) distclean
-install: busybox busybox.links
- ./install.sh $(PREFIX)
+install: install.sh busybox busybox.links
+ $(SHELL) $< $(PREFIX)
-dist release: distclean
- $(MAKE) -C docs
+install-hardlinks: install.sh busybox busybox.links
+ $(SHELL) $< $(PREFIX) --hardlinks
+
+debug_pristine:
+ @ echo VPATH=\"$(VPATH)\"
+ @ echo OBJECTS=\"$(OBJECTS)\"
+
+dist release: distclean doc
cd ..; \
rm -rf busybox-$(VERSION); \
cp -a busybox busybox-$(VERSION); \
find busybox-$(VERSION)/ -type d \
-name CVS \
-print \
- | xargs rm -rf; \
+ -exec rm -rf {} \; \
\
find busybox-$(VERSION)/ -type f \
-name .cvsignore \
-print \
- | xargs rm -f; \
+ -exec rm -f {} \; \
+ \
+ find busybox-$(VERSION)/ -type f \
+ -name .\#* \
+ -print \
+ -exec rm -f {} \; \
\
tar -cvzf busybox-$(VERSION).tar.gz busybox-$(VERSION)/;
+
+.PHONY: tags
+tags:
+ ctags -R .