Makefile - busybox - Git at Google

 # Makefile for busybox
 #
 # Copyright (C) 1999-2000 Erik Andersen <andersee@debian.org>
 # Copyright (C) 2000 Karl M. Hegbloom <karlheg@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
 # 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   := 0.47
 BUILDTIME := $(shell TZ=UTC date --utc "+%Y.%m.%d-%H:%M%z")
 export VERSION

 # 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

 # 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

 # 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 are running a cross compiler, you may want to set this
 # to something more interesting...
 CROSS = #powerpc-linux-
 CC = $(CROSS)gcc
 STRIPTOOL = $(CROSS)strip

 # To compile vs an alternative libc, you may need to use/adjust
 # the following lines to meet your needs.  This is how I make
 # busybox compile with uC-Libc...
 #LIBCDIR=/home/andersen/CVS/uC-libc
 #GCCINCDIR = $(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp")
 #CFLAGS+=-nostdinc -fno-builtin -I$(LIBCDIR)/include -I$(GCCINCDIR)
 #LDFLAGS+=-nostdlib
 #LIBRARIES = $(LIBCDIR)/libc.a

 #--------------------------------------------------------

 # 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)

 WARNINGS = -Wall

 ifeq ($(DOLFS),true)
     # For large file summit support
     CFLAGS+=-D_FILE_OFFSET_BITS=64
 endif
 ifeq ($(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
 # -D_GNU_SOURCE is needed because environ is used in init.c
 ifeq ($(DODEBUG),true)
     CFLAGS += $(WARNINGS) -g -D_GNU_SOURCE
     LDFLAGS +=
     STRIP   =
 else
     CFLAGS  += $(WARNINGS) $(OPTIMIZATION) -fomit-frame-pointer -D_GNU_SOURCE
     LDFLAGS  += -s
     STRIP    = $(STRIPTOOL) --remove-section=.note --remove-section=.comment $(PROG)
 endif
 ifeq ($(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

 OBJECTS   = $(shell ./busybox.sh) busybox.o messages.o usage.o utility.o
 CFLAGS    += -DBB_VER='"$(VERSION)"'
 CFLAGS    += -DBB_BT='"$(BUILDTIME)"'
 ifdef BB_INIT_SCRIPT
     CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"'
 endif


 all: busybox busybox.links doc

 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
 	- pod2text docs/busybox.pod > docs/BusyBox.txt

 docs/BusyBox.1: docs/busybox.pod
 	- pod2man --center=BusyBox --release="version $(VERSION)" docs/busybox.pod > docs/BusyBox.1

 docs/BusyBox.html: docs/busybox.lineo.com/BusyBox.html
 	- rm -f docs/BusyBox.html
 	- ln -s busybox.lineo.com/BusyBox.html docs/BusyBox.html

 docs/busybox.lineo.com/BusyBox.html: docs/busybox.pod
 	- pod2html --noindex docs/busybox.pod > 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
 	(cd docs; sgmltools -b txt busybox.sgml)

 docs/busybox.dvi: docs/busybox.sgml
 	(cd docs; sgmltools -b dvi busybox.sgml)

 docs/busybox.ps: docs/busybox.sgml
 	(cd docs; sgmltools -b ps busybox.sgml)

 docs/busybox.pdf: docs/busybox.ps
 	(cd docs; ps2pdf busybox.ps)

 docs/busybox/busyboxdocumentation.html: docs/busybox.sgml
 	(cd docs/busybox.lineo.com; sgmltools -b html ../busybox.sgml)


 busybox: $(OBJECTS)
 	$(CC) $(LDFLAGS) -o $@ $^ $(LIBRARIES)
 	$(STRIP)

 busybox.links: Config.h
 	- ./busybox.mkll | sort >$@

 nfsmount.o cmdedit.o: %.o: %.h
 $(OBJECTS): %.o: Config.h busybox.h  %.c Makefile

 utility.o: loop.h

 loop.h:
 	@./mk_loop_h.sh

 test tests:
 	cd tests && $(MAKE) all

 clean:
 	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 -rf docs/busybox _install
 	- rm -f busybox.links *~ *.o core

 distclean: clean
 	- rm -f busybox
 	- cd tests && $(MAKE) distclean

 install: busybox busybox.links
 	./install.sh $(PREFIX)

 install-hardlinks: busybox busybox.links
 	./install.sh $(PREFIX) --hardlinks

 dist release: distclean doc
 	cd ..;					\
 	rm -rf busybox-$(VERSION);		\
 	cp -a busybox busybox-$(VERSION);	\
 						\
 	find busybox-$(VERSION)/ -type d	\
 				 -name CVS	\
 				 -print		\
 		| xargs rm -rf;			\
 						\
 	find busybox-$(VERSION)/ -type f	\
 				 -name .cvsignore \
 				 -print		\
 		| xargs rm -f;			\
 						\
 	find busybox-$(VERSION)/ -type f	\
 				 -name .\#*	\
 				 -print		\
 		| xargs rm -f;			\
 						\
 	tar -cvzf busybox-$(VERSION).tar.gz busybox-$(VERSION)/;

 .PHONY: tags
 tags:
 	ctags -R .
	# Makefile for busybox
	#
	# Copyright (C) 1999-2000 Erik Andersen <andersee@debian.org>
	# Copyright (C) 2000 Karl M. Hegbloom <karlheg@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
	# 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 := 0.47
	BUILDTIME := $(shell TZ=UTC date --utc "+%Y.%m.%d-%H:%M%z")
	export VERSION

	# 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

	# 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

	# 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 are running a cross compiler, you may want to set this
	# to something more interesting...
	CROSS = #powerpc-linux-
	CC = $(CROSS)gcc
	STRIPTOOL = $(CROSS)strip

	# To compile vs an alternative libc, you may need to use/adjust
	# the following lines to meet your needs. This is how I make
	# busybox compile with uC-Libc...
	#LIBCDIR=/home/andersen/CVS/uC-libc
	#GCCINCDIR = $(shell gcc -print-search-dirs \| sed -ne "s/install: \(.*\)/\1include/gp")
	#CFLAGS+=-nostdinc -fno-builtin -I$(LIBCDIR)/include -I$(GCCINCDIR)
	#LDFLAGS+=-nostdlib
	#LIBRARIES = $(LIBCDIR)/libc.a

	#--------------------------------------------------------

	# 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)

	WARNINGS = -Wall

	ifeq ($(DOLFS),true)
	# For large file summit support
	CFLAGS+=-D_FILE_OFFSET_BITS=64
	endif
	ifeq ($(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
	# -D_GNU_SOURCE is needed because environ is used in init.c
	ifeq ($(DODEBUG),true)
	CFLAGS += $(WARNINGS) -g -D_GNU_SOURCE
	LDFLAGS +=
	STRIP =
	else
	CFLAGS += $(WARNINGS) $(OPTIMIZATION) -fomit-frame-pointer -D_GNU_SOURCE
	LDFLAGS += -s
	STRIP = $(STRIPTOOL) --remove-section=.note --remove-section=.comment $(PROG)
	endif
	ifeq ($(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

	OBJECTS = $(shell ./busybox.sh) busybox.o messages.o usage.o utility.o
	CFLAGS += -DBB_VER='"$(VERSION)"'
	CFLAGS += -DBB_BT='"$(BUILDTIME)"'
	ifdef BB_INIT_SCRIPT
	CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"'
	endif


	all: busybox busybox.links doc

	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
	- pod2text docs/busybox.pod > docs/BusyBox.txt

	docs/BusyBox.1: docs/busybox.pod
	- pod2man --center=BusyBox --release="version $(VERSION)" docs/busybox.pod > docs/BusyBox.1

	docs/BusyBox.html: docs/busybox.lineo.com/BusyBox.html
	- rm -f docs/BusyBox.html
	- ln -s busybox.lineo.com/BusyBox.html docs/BusyBox.html

	docs/busybox.lineo.com/BusyBox.html: docs/busybox.pod
	- pod2html --noindex docs/busybox.pod > 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
	(cd docs; sgmltools -b txt busybox.sgml)

	docs/busybox.dvi: docs/busybox.sgml
	(cd docs; sgmltools -b dvi busybox.sgml)

	docs/busybox.ps: docs/busybox.sgml
	(cd docs; sgmltools -b ps busybox.sgml)

	docs/busybox.pdf: docs/busybox.ps
	(cd docs; ps2pdf busybox.ps)

	docs/busybox/busyboxdocumentation.html: docs/busybox.sgml
	(cd docs/busybox.lineo.com; sgmltools -b html ../busybox.sgml)



	busybox: $(OBJECTS)
	$(CC) $(LDFLAGS) -o $@ $^ $(LIBRARIES)
	$(STRIP)

	busybox.links: Config.h
	- ./busybox.mkll \| sort >$@

	nfsmount.o cmdedit.o: %.o: %.h
	$(OBJECTS): %.o: Config.h busybox.h %.c Makefile

	utility.o: loop.h

	loop.h:
	@./mk_loop_h.sh

	test tests:
	cd tests && $(MAKE) all

	clean:
	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 -rf docs/busybox _install
	- rm -f busybox.links ~ .o core

	distclean: clean
	- rm -f busybox
	- cd tests && $(MAKE) distclean

	install: busybox busybox.links
	./install.sh $(PREFIX)

	install-hardlinks: busybox busybox.links
	./install.sh $(PREFIX) --hardlinks

	dist release: distclean doc
	cd ..; \
	rm -rf busybox-$(VERSION); \
	cp -a busybox busybox-$(VERSION); \
	\
	find busybox-$(VERSION)/ -type d \
	-name CVS \
	-print \
	\| xargs rm -rf; \
	\
	find busybox-$(VERSION)/ -type f \
	-name .cvsignore \
	-print \
	\| xargs rm -f; \
	\
	find busybox-$(VERSION)/ -type f \
	-name .\#* \
	-print \
	\| xargs rm -f; \
	\
	tar -cvzf busybox-$(VERSION).tar.gz busybox-$(VERSION)/;

	.PHONY: tags
	tags:
	ctags -R .