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Eric Andersen85208e22002-04-12 12:05:57 +00001# Rules.make for busybox
Eric Andersen4bcdd722001-10-24 05:26:42 +00002#
Mike Frysinger5a5d0fa2005-11-29 02:53:52 +00003# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
Eric Andersen85208e22002-04-12 12:05:57 +00004#
Mike Frysinger5a5d0fa2005-11-29 02:53:52 +00005# Licensed under GPLv2, see the file LICENSE in this tarball for details.
Eric Andersen4bcdd722001-10-24 05:26:42 +00006#
7
Mike Frysinger004ad112005-11-29 02:52:25 +00008# Pull in the user's busybox configuration
9ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
10-include $(top_builddir)/.config
11endif
12
Eric Andersenc9f20d92002-12-05 08:41:41 +000013#--------------------------------------------------------
Eric Andersen85208e22002-04-12 12:05:57 +000014PROG := busybox
Bernhard Reutner-Fischer8c7a7e62005-10-13 10:40:18 +000015MAJOR_VERSION :=1
16MINOR_VERSION :=1
17SUBLEVEL_VERSION:=0
18EXTRAVERSION :=-pre1
19VERSION :=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL_VERSION)$(EXTRAVERSION)
Eric Andersen85208e22002-04-12 12:05:57 +000020BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z")
Eric Andersen4bcdd722001-10-24 05:26:42 +000021
22
Eric Andersenc9f20d92002-12-05 08:41:41 +000023#--------------------------------------------------------
Eric Andersen85208e22002-04-12 12:05:57 +000024# With a modern GNU make(1) (highly recommended, that's what all the
25# developers use), all of the following configuration values can be
26# overridden at the command line. For example:
Bernhard Reutner-Fischer5c071bc2005-10-05 07:40:46 +000027# make CROSS=powerpc-linux- top_srcdir="$HOME/busybox" PREFIX=/mnt/app
Eric Andersenc9f20d92002-12-05 08:41:41 +000028#--------------------------------------------------------
Eric Andersen4bcdd722001-10-24 05:26:42 +000029
Eric Andersenc9f20d92002-12-05 08:41:41 +000030# If you are running a cross compiler, you will want to set 'CROSS'
31# to something more interesting... Target architecture is determined
32# by asking the CC compiler what arch it compiles things for, so unless
33# your compiler is broken, you should not need to specify TARGET_ARCH
Eric Andersen5912acb2003-11-05 11:34:26 +000034CROSS =$(subst ",, $(strip $(CROSS_COMPILER_PREFIX)))
Eric Andersen5912acb2003-11-05 11:34:26 +000035CC = $(CROSS)gcc
36AR = $(CROSS)ar
37AS = $(CROSS)as
38LD = $(CROSS)ld
39NM = $(CROSS)nm
40STRIP = $(CROSS)strip
41CPP = $(CC) -E
Eric Andersen7daa0762004-10-08 07:46:08 +000042# MAKEFILES = $(top_builddir)/.config
Bernhard Reutner-Fischer8c7a7e62005-10-13 10:40:18 +000043RM = rm
44RM_F = $(RM) -f
45LN = ln
46LN_S = $(LN) -s
47MKDIR = mkdir
48MKDIR_P = $(MKDIR) -p
49MV = mv
50CP = cp
51
Eric Andersen85208e22002-04-12 12:05:57 +000052
Eric Andersenc9f20d92002-12-05 08:41:41 +000053# What OS are you compiling busybox for? This allows you to include
54# OS specific things, syscall overrides, etc.
Eric Andersen5912acb2003-11-05 11:34:26 +000055TARGET_OS=linux
Eric Andersen85208e22002-04-12 12:05:57 +000056
Eric Andersenc9f20d92002-12-05 08:41:41 +000057# Select the compiler needed to build binaries for your development system
Eric Andersen5912acb2003-11-05 11:34:26 +000058HOSTCC = gcc
Robert Griebl53f133a2002-12-16 21:55:39 +000059HOSTCFLAGS= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
Eric Andersenc9f20d92002-12-05 08:41:41 +000060
Eric Andersenc7bda1c2004-03-15 08:29:22 +000061# Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
Eric Andersen85d9d802003-01-14 09:12:39 +000062LC_ALL:= C
63
Eric Andersenc9f20d92002-12-05 08:41:41 +000064# If you want to add some simple compiler switches (like -march=i686),
65# especially from the command line, use this instead of CFLAGS directly.
66# For optimization overrides, it's better still to set OPTIMIZATION.
67CFLAGS_EXTRA=$(subst ",, $(strip $(EXTRA_CFLAGS_OPTIONS)))
Eric Andersenc7bda1c2004-03-15 08:29:22 +000068
Eric Andersen85208e22002-04-12 12:05:57 +000069# To compile vs some other alternative libc, you may need to use/adjust
70# the following lines to meet your needs...
71#
72# If you are using Red Hat 6.x with the compatible RPMs (for developing under
73# Red Hat 5.x and glibc 2.0) uncomment the following. Be sure to read about
74# using the compatible RPMs (compat-*) at http://www.redhat.com !
75#LIBCDIR:=/usr/i386-glibc20-linux
76#
Eric Andersen0a14c9f2003-07-22 08:56:01 +000077# For other libraries, you are on your own. But these may (or may not) help...
Eric Andersen85208e22002-04-12 12:05:57 +000078#LDFLAGS+=-nostdlib
79#LIBRARIES:=$(LIBCDIR)/lib/libc.a -lgcc
Rob Landley4a070d12005-12-01 17:01:43 +000080#CROSS_CFLAGS+=-nostdinc -I$(LIBCDIR)/include -I$(GCCINCDIR) -funsigned-char
Eric Andersen85208e22002-04-12 12:05:57 +000081#GCCINCDIR:=$(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp")
82
Robert Griebl53f133a2002-12-16 21:55:39 +000083WARNINGS=-Wall -Wstrict-prototypes -Wshadow
Rob Landley4a070d12005-12-01 17:01:43 +000084CFLAGS=-I$(top_builddir)/include -I$(top_srcdir)/include -I$(srcdir) -funsigned-char
Mike Frysinger4d008962005-07-27 01:09:24 +000085ARFLAGS=cru
Eric Andersen85208e22002-04-12 12:05:57 +000086
Eric Andersenc9f20d92002-12-05 08:41:41 +000087#--------------------------------------------------------
Bernhard Reutner-Fischer1c943eb2005-09-26 16:01:43 +000088export VERSION BUILDTIME HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP
Eric Andersen5912acb2003-11-05 11:34:26 +000089ifeq ($(strip $(TARGET_ARCH)),)
Rob Landley088ee412005-07-28 19:38:52 +000090TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
Eric Andersen5b0f9e42002-06-23 04:50:49 +000091 -e 's/i.86/i386/' \
92 -e 's/sparc.*/sparc/' \
93 -e 's/arm.*/arm/g' \
94 -e 's/m68k.*/m68k/' \
95 -e 's/ppc/powerpc/g' \
96 -e 's/v850.*/v850/g' \
97 -e 's/sh[234]/sh/' \
Eric Andersenc9f20d92002-12-05 08:41:41 +000098 -e 's/mips-.*/mips/' \
99 -e 's/mipsel-.*/mipsel/' \
100 -e 's/cris.*/cris/' \
101 )
Eric Andersen5912acb2003-11-05 11:34:26 +0000102endif
Eric Andersenc9f20d92002-12-05 08:41:41 +0000103
Eric Andersen1b6eb9b2002-10-30 06:55:37 +0000104# A nifty macro to make testing gcc features easier
Mike Frysingerb3b756d2005-07-28 22:26:25 +0000105check_gcc=$(shell \
106 if [ "$(1)" != "" ]; then \
107 if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \
108 then echo "$(1)"; else echo "$(2)"; fi \
109 fi)
Eric Andersen5b0f9e42002-06-23 04:50:49 +0000110
Mike Frysingerc99e2c52005-07-28 22:14:35 +0000111# Setup some shortcuts so that silent mode is silent like it should be
112ifeq ($(subst s,,$(MAKEFLAGS)),$(MAKEFLAGS))
113export MAKE_IS_SILENT=n
114SECHO=@echo
115else
116export MAKE_IS_SILENT=y
117SECHO=-@false
118endif
119
Eric Andersen5b0f9e42002-06-23 04:50:49 +0000120#--------------------------------------------------------
121# Arch specific compiler optimization stuff should go here.
122# Unless you want to override the defaults, do not set anything
123# for OPTIMIZATION...
124
125# use '-Os' optimization if available, else use -O2
Mike Frysingerb3b756d2005-07-28 22:26:25 +0000126OPTIMIZATION:=$(call check_gcc,-Os,-O2)
Eric Andersen5b0f9e42002-06-23 04:50:49 +0000127
128# Some nice architecture specific optimizations
129ifeq ($(strip $(TARGET_ARCH)),arm)
130 OPTIMIZATION+=-fstrict-aliasing
131endif
132ifeq ($(strip $(TARGET_ARCH)),i386)
Eric Andersen0a14c9f2003-07-22 08:56:01 +0000133 OPTIMIZATION+=$(call check_gcc,-march=i386,)
Eric Andersen1b6eb9b2002-10-30 06:55:37 +0000134 OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,)
135 OPTIMIZATION+=$(call check_gcc,-falign-functions=0 -falign-jumps=0 -falign-loops=0,\
136 -malign-functions=0 -malign-jumps=0 -malign-loops=0)
Eric Andersen5b0f9e42002-06-23 04:50:49 +0000137endif
Mike Frysingerb3b756d2005-07-28 22:26:25 +0000138OPTIMIZATIONS:=$(OPTIMIZATION) -fomit-frame-pointer
Eric Andersen5b0f9e42002-06-23 04:50:49 +0000139
Eric Andersen85208e22002-04-12 12:05:57 +0000140#
141#--------------------------------------------------------
142# If you're going to do a lot of builds with a non-vanilla configuration,
143# it makes sense to adjust parameters above, so you can type "make"
144# by itself, instead of following it by the same half-dozen overrides
145# every time. The stuff below, on the other hand, is probably less
146# prone to casual user adjustment.
Eric Andersenc7bda1c2004-03-15 08:29:22 +0000147#
Eric Andersen85208e22002-04-12 12:05:57 +0000148
Eric Andersene5272072003-07-22 22:15:21 +0000149ifeq ($(strip $(CONFIG_LFS)),y)
Eric Andersen85208e22002-04-12 12:05:57 +0000150 # For large file summit support
Eric Andersenecfa2902002-09-22 12:09:44 +0000151 CFLAGS+=-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
Eric Andersen85208e22002-04-12 12:05:57 +0000152endif
Eric Andersene5272072003-07-22 22:15:21 +0000153ifeq ($(strip $(CONFIG_DMALLOC)),y)
Eric Andersen85208e22002-04-12 12:05:57 +0000154 # For testing mem leaks with dmalloc
155 CFLAGS+=-DDMALLOC
156 LIBRARIES:=-ldmalloc
Eric Andersen85208e22002-04-12 12:05:57 +0000157else
Eric Andersene5272072003-07-22 22:15:21 +0000158 ifeq ($(strip $(CONFIG_EFENCE)),y)
Eric Andersen85208e22002-04-12 12:05:57 +0000159 LIBRARIES:=-lefence
Eric Andersen85208e22002-04-12 12:05:57 +0000160 endif
161endif
Eric Andersene5272072003-07-22 22:15:21 +0000162ifeq ($(strip $(CONFIG_DEBUG)),y)
Eric Andersen85208e22002-04-12 12:05:57 +0000163 CFLAGS +=$(WARNINGS) -g -D_GNU_SOURCE
164 LDFLAGS +=-Wl,-warn-common
165 STRIPCMD:=/bin/true -Not_stripping_since_we_are_debugging
166else
Eric Andersenbae7c1a2003-03-07 17:27:51 +0000167 CFLAGS+=$(WARNINGS) $(OPTIMIZATIONS) -D_GNU_SOURCE -DNDEBUG
Rob Landleyc7a3e1b2005-07-31 04:25:00 +0000168 LDFLAGS += -Wl,-warn-common
Mike Frysinger1c1655a2005-07-31 22:11:33 +0000169 STRIPCMD:=$(STRIP) -s --remove-section=.note --remove-section=.comment
Eric Andersen85208e22002-04-12 12:05:57 +0000170endif
Eric Andersene5272072003-07-22 22:15:21 +0000171ifeq ($(strip $(CONFIG_STATIC)),y)
Eric Andersen85208e22002-04-12 12:05:57 +0000172 LDFLAGS += --static
173endif
174
Bernhard Reutner-Fischer5c071bc2005-10-05 07:40:46 +0000175ifeq ($(strip $(CONFIG_SELINUX)),y)
176 LIBRARIES += -lselinux
177endif
178
Eric Andersen12f834c2002-10-26 10:17:24 +0000179ifeq ($(strip $(PREFIX)),)
Eric Andersen85208e22002-04-12 12:05:57 +0000180 PREFIX:=`pwd`/_install
181endif
182
183# Additional complications due to support for pristine source dir.
184# Include files in the build directory should take precedence over
Bernhard Reutner-Fischer5c071bc2005-10-05 07:40:46 +0000185# the copy in top_srcdir, both during the compilation phase and the
Eric Andersen85208e22002-04-12 12:05:57 +0000186# shell script that finds the list of object files.
187# Work in progress by <ldoolitt@recycle.lbl.gov>.
Bernhard Reutner-Fischer5c071bc2005-10-05 07:40:46 +0000188
Eric Andersen85208e22002-04-12 12:05:57 +0000189
Eric Andersen85208e22002-04-12 12:05:57 +0000190OBJECTS:=$(APPLET_SOURCES:.c=.o) busybox.o usage.o applets.o
191CFLAGS += $(CROSS_CFLAGS)
192ifdef BB_INIT_SCRIPT
193 CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"'
194endif
195
196# Put user-supplied flags at the end, where they
197# have a chance of winning.
198CFLAGS += $(CFLAGS_EXTRA)
Eric Andersen4bcdd722001-10-24 05:26:42 +0000199
Eric Andersen85208e22002-04-12 12:05:57 +0000200.PHONY: dummy