build.sh revision 1.25 
1#! /bin/sh
2#  $NetBSD: build.sh,v 1.25 2001/11/15 00:14:35 thorpej Exp $
3#
4# Top level build wrapper, for a system containing no tools.
5#
6# This script should run on any POSIX-compliant shell.  For systems
7# with a strange /bin/sh, "ksh" may be an ample alternative.
8#
9
10bomb () {
11	echo ""
12	echo "ERROR: $@"
13	echo "*** BUILD ABORTED ***"
14	exit 1
15}
16[ -d usr.bin/make ] || bomb "build.sh must be run from the top source level"
17
18getarch () {
19	# Translate a MACHINE into a default MACHINE_ARCH.
20	case $MACHINE in
21		arm26|dnard|evbarm|hpcarm|netwinder)
22			MACHINE_ARCH=arm;;
23
24		acorn32|arm32|cats)
25			MACHINE_ARCH=arm32;;
26
27		sun2)
28			MACHINE_ARCH=m68000;;
29
30		amiga|atari|cesfic|hp300|sun3|*68k)
31			MACHINE_ARCH=m68k;;
32
33		mipsco|newsmips|sgimips)
34			MACHINE_ARCH=mipseb;;
35
36		algor|arc|cobalt|hpcmips|playstation2|pmax)
37			MACHINE_ARCH=mipsel;;
38
39		pc532)
40			MACHINE_ARCH=ns32k;;
41
42		bebox|prep|sandpoint|walnut|*ppc)
43			MACHINE_ARCH=powerpc;;
44
45		evbsh3|mmeye)
46			MACHINE_ARCH=sh3eb;;
47
48		dreamcast|hpcsh)
49			MACHINE_ARCH=sh3el;;
50
51		alpha|i386|sparc|sparc64|vax|x86_64)
52			MACHINE_ARCH=$MACHINE;;
53
54		*)	bomb "unknown target MACHINE: $MACHINE";;
55	esac
56}
57
58getmakevar () {
59	cat <<EOF | $make -s -f- _x_
60_x_:
61	echo \${$1}
62.include <bsd.prog.mk>
63EOF
64}
65
66# Emulate "mkdir -p" for systems that have an Old "mkdir".
67mkdirp () {
68	IFS=/; set -- $@; unset IFS
69	_d=
70	if [ -z "$1" ]; then _d=/; shift; fi
71
72	for _f in "$@"; do
73		if [ -n "$_f" ]; then
74			[ -d "$_d$_f" ] || $runcmd mkdir "$_d$_f" || return 1
75			_d="$_d$_f/"
76		fi
77	done
78}
79
80resolvepath () {
81	case $OPTARG in
82	/*)	;;
83	*)	OPTARG="$cwd/$OPTARG";;
84	esac
85}
86
87usage () {
88	echo "Usage:"
89	echo "$0 [-boru] [-a arch] [-j njob] -m mach [-w wrapper]"
90	echo "   [-D dest] [-O obj] [-R release] [-T tools]"
91	echo ""
92	echo "    -a: set MACHINE_ARCH to arch (otherwise deduced from MACHINE)"
93	echo "    -b: build nbmake and nbmake wrapper script, if needed"
94	echo "    -j: set NBUILDJOBS to njob"
95	echo "    -m: set MACHINE to mach (not required if NetBSD native)"
96	echo "    -n: show commands that would be executed, but do not execute them"
97	echo "    -o: set MKOBJDIRS=no (do not create objdirs at start of build)"
98	echo "    -r: remove contents of TOOLDIR and DESTDIR before building"
99	echo "    -t: build and install tools only (implies -b)"
100	echo "    -u: set UPDATE"
101	echo "    -w: create nbmake script at wrapper (default TOOLDIR/bin/nbmake-MACHINE)"
102	echo "    -D: set DESTDIR to dest"
103	echo "    -O: set obj root directory to obj (sets a MAKEOBJDIR pattern)"
104	echo "    -R: build a release (and set RELEASEDIR to release)"
105	echo "    -T: set TOOLDIR to tools"
106	echo ""
107	echo "Note: if -T is unset and TOOLDIR is not set in the environment,"
108	echo "      nbmake will be [re]built unconditionally."
109	exit 1
110}
111
112# Set defaults.
113MAKEFLAGS=
114buildtarget=build
115cwd=`pwd`
116do_buildsystem=true
117do_buildonlytools=false
118do_rebuildmake=false
119do_removedirs=false
120makeenv=
121makewrapper=
122opt_a=no
123opts='a:bhj:m:nortuw:D:O:R:T:'
124runcmd=
125
126if type getopts >/dev/null 2>&1; then
127	# Use POSIX getopts.
128	getoptcmd='getopts $opts opt && opt=-$opt'
129	optargcmd=':'
130else
131	type getopt >/dev/null 2>&1 || bomb "/bin/sh shell is too old; try ksh"
132
133	# Use old-style getopt(1) (doesn't handle whitespace in args).
134	args="`getopt $opts $*`"
135	[ $? = 0 ] || usage
136	set -- $args
137
138	getoptcmd='[ $# -gt 0 ] && opt="$1" && shift'
139	optargcmd='OPTARG="$1"; shift'
140fi
141
142# Parse command line options.
143while eval $getoptcmd; do case $opt in
144	-a)	eval $optargcmd
145		MACHINE_ARCH=$OPTARG; opt_a=yes;;
146
147	-b)	do_buildsystem=false;;
148
149	-j)	eval $optargcmd
150		MAKEFLAGS="$MAKEFLAGS NBUILDJOBS=$OPTARG"; export MAKEFLAGS;;
151
152	# -m overrides MACHINE_ARCH unless "-a" is specified
153	-m)	eval $optargcmd
154		MACHINE=$OPTARG; [ "$opt_a" != "yes" ] && getarch;;
155
156	-n)	runcmd=echo;;
157
158	-o)	MKOBJDIRS=no;;
159
160	-r)	do_removedirs=true; do_rebuildmake=true;;
161
162	-t)	do_buildonlytools=true; do_buildsystem=false;;
163
164	-u)	UPDATE=yes; export UPDATE
165		makeenv="$makeenv UPDATE";;
166
167	-w)	eval $optargcmd; resolvepath
168		makewrapper="$OPTARG";;
169
170	-D)	eval $optargcmd; resolvepath
171		DESTDIR="$OPTARG"; export DESTDIR
172		makeenv="$makeenv DESTDIR";;
173
174	-O)	eval $optargcmd; resolvepath
175		MAKEOBJDIR="\${.CURDIR:C,^$cwd,$OPTARG,}"; export MAKEOBJDIR
176		makeenv="$makeenv MAKEOBJDIR";;
177
178	-R)	eval $optargcmd; resolvepath
179		RELEASEDIR=$OPTARG; export RELEASEDIR
180		makeenv="$makeenv RELEASEDIR"
181		buildtarget=release;;
182
183	-T)	eval $optargcmd; resolvepath
184		TOOLDIR="$OPTARG"; export TOOLDIR;;
185
186	--)		break;;
187	-'?'|-h)	usage;;
188esac; done
189
190# Set up MACHINE*.  On a NetBSD host, these are allowed to be unset.
191if [ -z "$MACHINE" ]; then
192	if [ "`uname -s 2>/dev/null`" != "NetBSD" ]; then
193		echo "MACHINE must be set, or -m must be used, for cross builds."
194		echo ""; usage
195	fi
196	MACHINE=`uname -m`
197fi
198[ -n "$MACHINE_ARCH" ] || getarch
199
200# Set up default make(1) environment.
201makeenv="$makeenv TOOLDIR MACHINE MACHINE_ARCH MAKEFLAGS"
202MAKEFLAGS="-m $cwd/share/mk $MAKEFLAGS MKOBJDIRS=${MKOBJDIRS-yes}"
203export MAKEFLAGS MACHINE MACHINE_ARCH
204
205# Test make source file timestamps against installed nbmake binary,
206# if TOOLDIR is pre-set.
207make=${TOOLDIR-nonexistent}/bin/nbmake
208if [ -x $make ]; then
209	for f in usr.bin/make/*.[ch] usr.bin/make/lst.lib/*.[ch]; do
210		if [ $f -nt $make ]; then
211			do_rebuildmake=true; break
212		fi
213	done
214else
215	do_rebuildmake=true
216fi
217
218# Build bootstrap nbmake if needed.
219if $do_rebuildmake; then
220	$runcmd echo "===> Bootstrapping nbmake"
221	tmpdir=${TMPDIR-/tmp}/nbbuild$$
222
223	$runcmd mkdir $tmpdir || bomb "cannot mkdir: $tmpdir"
224	trap "rm -r -f $tmpdir" 0
225	trap "exit 1" 1 2 3 15
226	$runcmd cd $tmpdir
227
228	$runcmd ${HOST_CC-cc} ${HOST_CFLAGS} -DMAKE_BOOTSTRAP \
229		-o nbmake -I$cwd/usr.bin/make \
230		$cwd/usr.bin/make/*.c $cwd/usr.bin/make/lst.lib/*.c \
231		|| bomb "build of nbmake failed"
232
233	make=$tmpdir/nbmake
234	$runcmd cd $cwd
235	$runcmd rm -f usr.bin/make/*.o usr.bin/make/lst.lib/*.o
236fi
237
238# If TOOLDIR isn't already set, make objdirs in "tools" in case the
239# default setting from <bsd.own.mk> is used.
240if [ -z "$TOOLDIR" ] && [ "$MKOBJDIRS" != "no" ]; then
241	$runcmd cd tools
242	$runcmd $make obj NOSUBDIR= || exit 1
243	$runcmd cd ..
244fi
245
246# Find DESTDIR and TOOLDIR.
247if [ "$runcmd" = "echo" ]; then
248	# shown symbolically with -n because these may come from mk.conf
249	DESTDIR='$DESTDIR'
250	TOOLDIR='$TOOLDIR'
251else
252	DESTDIR=`getmakevar DESTDIR`; echo "===> DESTDIR path: $DESTDIR"
253	TOOLDIR=`getmakevar TOOLDIR`; echo "===> TOOLDIR path: $TOOLDIR"
254	export DESTDIR TOOLDIR
255fi
256
257# Check validity of TOOLDIR and DESTDIR.
258if [ -z "$TOOLDIR" ] || [ "$TOOLDIR" = "/" ]; then
259	bomb "TOOLDIR '$TOOLDIR' invalid"
260fi
261removedirs="$TOOLDIR"
262
263if [ -z "$DESTDIR" ] || [ "$DESTDIR" = "/" ]; then
264	if $do_buildsystem && \
265	   ([ "$buildtarget" = "release" ] || \
266	    [ "`uname -s 2>/dev/null`" != "NetBSD" ] || \
267	    [ "`uname -m`" != "$MACHINE" ]); then
268		bomb "DESTDIR must be set to a non-root path for cross builds or -R."
269	elif $do_buildsystem; then
270		echo "===> WARNING: Building to /."
271		echo "===> If your kernel is not up to date, this may cause the system to break!"
272	fi
273else
274	removedirs="$removedirs $DESTDIR"
275fi
276
277# Remove the target directories.
278if $do_removedirs; then
279	for f in $removedirs; do
280		echo "===> Removing $f"
281		$runcmd rm -r -f $f
282	done
283fi
284
285# Recreate $TOOLDIR.
286mkdirp $TOOLDIR/bin || bomb "mkdir of $TOOLDIR/bin failed"
287
288# Install nbmake if it was built.
289if $do_rebuildmake; then
290	$runcmd rm -f $TOOLDIR/bin/nbmake
291	$runcmd cp $make $TOOLDIR/bin/nbmake
292	$runcmd rm -r -f $tmpdir
293	trap 0 1 2 3 15
294fi
295
296# Build a nbmake wrapper script, usable by hand as well as by build.sh.
297if [ -z "$makewrapper" ]; then
298	makewrapper=$TOOLDIR/bin/nbmake-$MACHINE
299fi
300
301$runcmd rm -f $makewrapper
302if [ "$runcmd" = "echo" ]; then
303	echo 'cat <<EOF >'$makewrapper
304	makewrapout=
305else
306	makewrapout=">>$makewrapper"
307fi
308
309eval cat <<EOF $makewrapout
310#! /bin/sh
311# Set proper variables to allow easy "make" building of a NetBSD subtree.
312# Generated from:  \$NetBSD: build.sh,v 1.25 2001/11/15 00:14:35 thorpej Exp $
313#
314
315EOF
316for f in $makeenv; do
317	eval echo "$f=\'\$`echo $f`\'\;\ export\ $f" $makewrapout
318done
319eval echo "USETOOLS=yes\; export USETOOLS" $makewrapout
320
321eval cat <<EOF $makewrapout
322
323exec \$TOOLDIR/bin/nbmake \${1+"\$@"}
324EOF
325[ "$runcmd" = "echo" ] && echo EOF
326$runcmd chmod +x $makewrapper
327
328if $do_buildsystem; then
329	${runcmd-exec} $makewrapper $buildtarget
330elif $do_buildonlytools; then
331	if [ "$MKOBJDIRS" != "no" ]; then
332		$runcmd $makewrapper obj-tools || exit 1
333	fi
334	$runcmd cd tools
335	${runcmd-exec} $makewrapper cleandir dependall install
336fi
337