aboutsummaryrefslogtreecommitdiff
path: root/Makefile
blob: 588f8e0a2019a6eabc382b8ddaee4baaa45f5510 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
# Makefile for busybox
#
# 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
# 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   := 0.50pre
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

# 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 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 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

# 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")

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

# 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 ($(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  += $(WARNINGS) $(OPTIMIZATION) -fomit-frame-pointer -D_GNU_SOURCE
    LDFLAGS += -s -Wl,-warn-common
    STRIP    = $(STRIPTOOL) --remove-section=.note --remove-section=.comment $(PROG)
endif
ifeq ($(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

# Additional complications due to support for pristine source dir.
# Config.h 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>.
# If it gets in your way, set DISABLE_VPATH=yes
ifeq ($(strip $(DISABLE_VPATH)),yes)
    CONFIG_H = Config.h
else
    VPATH = .:$(BB_SRC_DIR)
    CONFIG_LIST = $(addsuffix /Config.h,$(subst :, ,$(VPATH)))
    CONFIG_H    = $(word 1,$(shell ls -f -1 $(CONFIG_LIST) 2>/dev/null))
    CFLAGS += -I- $(patsubst %,-I%,$(subst :, ,$(VPATH)))
endif

OBJECTS   = $(shell $(BB_SRC_DIR)/busybox.sh $(CONFIG_H) $(BB_SRC_DIR)) 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

ifneq ($(strip $(USE_SYSTEM_PWD_GRP)),true)
    PWD_LIB   = pwd_grp/libpwd.a
    LIBRARIES += $(PWD_LIB)
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: 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
	-mkdir -p docs
	-pod2text $(BB_SRC_DIR)/docs/busybox.pod > docs/BusyBox.txt

docs/BusyBox.1: docs/busybox.pod
	- mkdir -p docs
	- pod2man --center=BusyBox --release="version $(VERSION)" \
		$(BB_SRC_DIR)/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
	-@ mkdir -p docs/busybox.lineo.com
	-  pod2html --noindex $(BB_SRC_DIR)/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
	- 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)

$(PWD_LIB):
	$(MAKE) -eC pwd_grp

busybox.links: Config.h applets.h
	- $(BB_SRC_DIR)/busybox.mkll $(CONFIG_H) $(BB_SRC_DIR)/applets.h >$@

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

usage.o: usage.h

utility.o: loop.h

loop.h: mk_loop_h.sh
	@ sh $<

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

clean:
	- cd tests && $(MAKE) clean
	- cd pwd_grp && $(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
	- rm -f busybox.links loop.h *~ *.o core

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

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

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

debug_pristine:
	@ echo VPATH=\"$(VPATH)\"
	@ echo CONFIG_LIST=\"$(CONFIG_LIST)\"
	@ echo CONFIG_H=\"$(CONFIG_H)\"
	@ echo OBJECTS=\"$(OBJECTS)\"

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