Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 1 | # Rules.make for busybox |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 2 | # |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 3 | # Copyright (C) 2002 Erik Andersen <andersee@debian.org> |
| 4 | # |
| 5 | # This program is free software; you can redistribute it and/or modify |
| 6 | # it under the terms of the GNU General Public License as published by |
| 7 | # the Free Software Foundation; either version 2 of the License, or |
| 8 | # (at your option) any later version. |
| 9 | # |
| 10 | # This program is distributed in the hope that it will be useful, |
| 11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | # General Public License for more details. |
| 14 | # |
| 15 | # You should have received a copy of the GNU General Public License |
| 16 | # along with this program; if not, write to the Free Software |
| 17 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 18 | # |
| 19 | |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 20 | #-------------------------------------------------------- |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 21 | PROG := busybox |
| 22 | VERSION := 0.61.pre |
| 23 | BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z") |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 24 | |
| 25 | |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 26 | #-------------------------------------------------------- |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 27 | # With a modern GNU make(1) (highly recommended, that's what all the |
| 28 | # developers use), all of the following configuration values can be |
| 29 | # overridden at the command line. For example: |
| 30 | # make CROSS=powerpc-linux- BB_SRC_DIR=$HOME/busybox PREFIX=/mnt/app |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 31 | #-------------------------------------------------------- |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 32 | |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 33 | # If you are running a cross compiler, you will want to set 'CROSS' |
| 34 | # to something more interesting... Target architecture is determined |
| 35 | # by asking the CC compiler what arch it compiles things for, so unless |
| 36 | # your compiler is broken, you should not need to specify TARGET_ARCH |
| 37 | CROSS =$(subst ",, $(strip $(CROSS_COMPILER_PREFIX))) |
| 38 | CC = $(CROSS)gcc |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 39 | AR := $(CROSS)ar |
| 40 | AS := $(CROSS)as |
| 41 | LD := $(CROSS)ld |
| 42 | NM := $(CROSS)nm |
| 43 | STRIP := $(CROSS)strip |
| 44 | CPP := $(CC) -E |
| 45 | MAKEFILES := $(TOPDIR).config |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 46 | |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 47 | # What OS are you compiling busybox for? This allows you to include |
| 48 | # OS specific things, syscall overrides, etc. |
| 49 | TARGET_OS:=linux |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 50 | |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 51 | # Select the compiler needed to build binaries for your development system |
| 52 | HOSTCC := gcc |
| 53 | HOSTCFLAGS:= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer |
| 54 | |
| 55 | # If you want to add some simple compiler switches (like -march=i686), |
| 56 | # especially from the command line, use this instead of CFLAGS directly. |
| 57 | # For optimization overrides, it's better still to set OPTIMIZATION. |
| 58 | CFLAGS_EXTRA=$(subst ",, $(strip $(EXTRA_CFLAGS_OPTIONS))) |
| 59 | |
| 60 | # If you have a "pristine" source directory, point BB_SRC_DIR to it. |
| 61 | # Experimental and incomplete; tell the mailing list |
| 62 | # <busybox@busybox.net> if you do or don't like it so far. |
| 63 | BB_SRC_DIR:= |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 64 | |
| 65 | # To compile vs some other alternative libc, you may need to use/adjust |
| 66 | # the following lines to meet your needs... |
| 67 | # |
| 68 | # If you are using Red Hat 6.x with the compatible RPMs (for developing under |
| 69 | # Red Hat 5.x and glibc 2.0) uncomment the following. Be sure to read about |
| 70 | # using the compatible RPMs (compat-*) at http://www.redhat.com ! |
| 71 | #LIBCDIR:=/usr/i386-glibc20-linux |
| 72 | # |
| 73 | # The following is used for libc5 (if you install altgcc and libc5-altdev |
| 74 | # on a Debian system). |
| 75 | #LIBCDIR:=/usr/i486-linuxlibc1 |
| 76 | # |
| 77 | # For other libraries, you are on your own... |
| 78 | #LDFLAGS+=-nostdlib |
| 79 | #LIBRARIES:=$(LIBCDIR)/lib/libc.a -lgcc |
| 80 | #CROSS_CFLAGS+=-nostdinc -I$(LIBCDIR)/include -I$(GCCINCDIR) |
| 81 | #GCCINCDIR:=$(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp") |
| 82 | |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 83 | WARNINGS:=-Wall -Wstrict-prototypes -Wshadow |
| 84 | CFLAGS:=-I$(TOPDIR)include |
| 85 | ARFLAGS:=-r |
| 86 | |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 87 | #-------------------------------------------------------- |
| 88 | export VERSION BUILDTIME TOPDIR HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP |
| 89 | ifeq ($(strip $(TARGET_ARCH)),) |
Eric Andersen | 08c358b | 2002-12-05 18:28:41 +0000 | [diff] [blame^] | 90 | TARGET_ARCH=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \ |
Eric Andersen | 5b0f9e4 | 2002-06-23 04:50:49 +0000 | [diff] [blame] | 91 | -e 's/i.86/i386/' \ |
| 92 | -e 's/sparc.*/sparc/' \ |
| 93 | -e 's/arm.*/arm/g' \ |
| 94 | -e 's/m68k.*/m68k/' \ |
| 95 | -e 's/ppc/powerpc/g' \ |
| 96 | -e 's/v850.*/v850/g' \ |
| 97 | -e 's/sh[234]/sh/' \ |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 98 | -e 's/mips-.*/mips/' \ |
| 99 | -e 's/mipsel-.*/mipsel/' \ |
| 100 | -e 's/cris.*/cris/' \ |
| 101 | ) |
| 102 | endif |
| 103 | |
| 104 | # Pull in the user's uClibc configuration |
| 105 | ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),) |
| 106 | include_config := 1 |
| 107 | -include $(TOPDIR).config |
| 108 | endif |
| 109 | |
Eric Andersen | 1b6eb9b | 2002-10-30 06:55:37 +0000 | [diff] [blame] | 110 | # A nifty macro to make testing gcc features easier |
| 111 | check_gcc=$(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \ |
| 112 | then echo "$(1)"; else echo "$(2)"; fi) |
Eric Andersen | 5b0f9e4 | 2002-06-23 04:50:49 +0000 | [diff] [blame] | 113 | |
| 114 | #-------------------------------------------------------- |
| 115 | # Arch specific compiler optimization stuff should go here. |
| 116 | # Unless you want to override the defaults, do not set anything |
| 117 | # for OPTIMIZATION... |
| 118 | |
| 119 | # use '-Os' optimization if available, else use -O2 |
Eric Andersen | 1b6eb9b | 2002-10-30 06:55:37 +0000 | [diff] [blame] | 120 | OPTIMIZATION:= |
| 121 | OPTIMIZATION+=${call check_gcc,-Os,-O2} |
Eric Andersen | 5b0f9e4 | 2002-06-23 04:50:49 +0000 | [diff] [blame] | 122 | |
| 123 | # Some nice architecture specific optimizations |
| 124 | ifeq ($(strip $(TARGET_ARCH)),arm) |
| 125 | OPTIMIZATION+=-fstrict-aliasing |
| 126 | endif |
| 127 | ifeq ($(strip $(TARGET_ARCH)),i386) |
| 128 | OPTIMIZATION+=-march=i386 |
Eric Andersen | 1b6eb9b | 2002-10-30 06:55:37 +0000 | [diff] [blame] | 129 | OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,) |
| 130 | OPTIMIZATION+=$(call check_gcc,-falign-functions=0 -falign-jumps=0 -falign-loops=0,\ |
| 131 | -malign-functions=0 -malign-jumps=0 -malign-loops=0) |
Eric Andersen | 5b0f9e4 | 2002-06-23 04:50:49 +0000 | [diff] [blame] | 132 | endif |
| 133 | OPTIMIZATIONS:=$(OPTIMIZATION) -fomit-frame-pointer |
| 134 | |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 135 | # |
| 136 | #-------------------------------------------------------- |
| 137 | # If you're going to do a lot of builds with a non-vanilla configuration, |
| 138 | # it makes sense to adjust parameters above, so you can type "make" |
| 139 | # by itself, instead of following it by the same half-dozen overrides |
| 140 | # every time. The stuff below, on the other hand, is probably less |
| 141 | # prone to casual user adjustment. |
| 142 | # |
| 143 | |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 144 | ifeq ($(strip $(DOLFS)),y) |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 145 | # For large file summit support |
Eric Andersen | ecfa290 | 2002-09-22 12:09:44 +0000 | [diff] [blame] | 146 | CFLAGS+=-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 147 | endif |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 148 | ifeq ($(strip $(DODMALLOC)),y) |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 149 | # For testing mem leaks with dmalloc |
| 150 | CFLAGS+=-DDMALLOC |
| 151 | LIBRARIES:=-ldmalloc |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 152 | else |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 153 | ifeq ($(strip $(DOEFENCE)),y) |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 154 | LIBRARIES:=-lefence |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 155 | endif |
| 156 | endif |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 157 | ifeq ($(strip $(DODEBUG)),y) |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 158 | CFLAGS +=$(WARNINGS) -g -D_GNU_SOURCE |
| 159 | LDFLAGS +=-Wl,-warn-common |
| 160 | STRIPCMD:=/bin/true -Not_stripping_since_we_are_debugging |
| 161 | else |
| 162 | CFLAGS += $(WARNINGS) $(OPTIMIZATIONS) -D_GNU_SOURCE |
| 163 | LDFLAGS += -s -Wl,-warn-common |
| 164 | STRIPCMD:=$(STRIP) --remove-section=.note --remove-section=.comment |
| 165 | endif |
Eric Andersen | c9f20d9 | 2002-12-05 08:41:41 +0000 | [diff] [blame] | 166 | ifeq ($(strip $(DOSTATIC)),y) |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 167 | LDFLAGS += --static |
| 168 | endif |
| 169 | |
Eric Andersen | 12f834c | 2002-10-26 10:17:24 +0000 | [diff] [blame] | 170 | ifeq ($(strip $(PREFIX)),) |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 171 | PREFIX:=`pwd`/_install |
| 172 | endif |
| 173 | |
| 174 | # Additional complications due to support for pristine source dir. |
| 175 | # Include files in the build directory should take precedence over |
| 176 | # the copy in BB_SRC_DIR, both during the compilation phase and the |
| 177 | # shell script that finds the list of object files. |
| 178 | # Work in progress by <ldoolitt@recycle.lbl.gov>. |
| 179 | # |
| 180 | ifneq ($(strip $(BB_SRC_DIR)),) |
| 181 | VPATH:=$(BB_SRC_DIR) |
| 182 | endif |
| 183 | |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 184 | OBJECTS:=$(APPLET_SOURCES:.c=.o) busybox.o usage.o applets.o |
| 185 | CFLAGS += $(CROSS_CFLAGS) |
| 186 | ifdef BB_INIT_SCRIPT |
| 187 | CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"' |
| 188 | endif |
| 189 | |
| 190 | # Put user-supplied flags at the end, where they |
| 191 | # have a chance of winning. |
| 192 | CFLAGS += $(CFLAGS_EXTRA) |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 193 | |
| 194 | %.o: %.c |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 195 | $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $< |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 196 | |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 197 | ifdef _FASTDEP_ALL_SUB_DIRS |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 198 | fastdep: dummy |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 199 | $(TOPDIR)scripts/mkdep $(CFLAGS) $(EXTRA_CFLAGS_nostdinc) -- $(wildcard *.[chS]) > .depend |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 200 | ifdef ALL_SUB_DIRS |
| 201 | $(MAKE) $(patsubst %,_sfdep_%,$(ALL_SUB_DIRS)) _FASTDEP_ALL_SUB_DIRS="$(ALL_SUB_DIRS)" |
| 202 | endif |
| 203 | |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 204 | $(patsubst %,_sfdep_%,$(_FASTDEP_ALL_SUB_DIRS)): |
| 205 | $(MAKE) -C $(patsubst _sfdep_%,%,$@) fastdep |
| 206 | endif |
| 207 | |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 208 | .PHONY: dummy |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 209 | |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 210 | |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 211 | |
Eric Andersen | 85208e2 | 2002-04-12 12:05:57 +0000 | [diff] [blame] | 212 | .EXPORT_ALL_VARIABLES: |
Eric Andersen | 4bcdd72 | 2001-10-24 05:26:42 +0000 | [diff] [blame] | 213 | |