NetBSD/usr.bin/rump_wmd/rump_wmd.sh

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#!/bin/sh
#
# $NetBSD: rump_wmd.sh,v 1.4 2014/01/28 13:58:25 pooka Exp $
#
# Copyright (c) 2014 Antti Kantee <pooka@iki.fi>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
: ${CC:=cc}
DEBUGLEVEL=0
LIBDIR=/usr/lib
die ()
{
echo $* >&2
exit 1
}
usage ()
{
die "Usage: $0 [-hv] [-L libdir] -lrump_component [...]"
}
unset FIRSTLIB
while getopts 'hl:L:v' opt; do
case "${opt}" in
l)
: ${FIRSTLIB:=${OPTIND}}
;;
L)
[ -z "${FIRSTLIB}" ] || usage
LIBDIR=${OPTARG}
;;
v)
[ -z "${FIRSTLIB}" ] || usage
DEBUGLEVEL=$((DEBUGLEVEL + 1))
;;
-h|*)
usage
;;
esac
done
[ -z "${FIRSTLIB}" ] && usage
shift $((${FIRSTLIB} - 2))
[ $# -eq 0 ] && usage
debug ()
{
[ ${DEBUGLEVEL} -ge ${1} ] && \
{ lvl=$1; shift; echo DEBUG${lvl}: $* >&2; }
}
# filters from list
filter ()
{
filtee=$1
vname=$2
tmplist=''
found=false
for x in $(eval echo \${${vname}}); do
if [ "${filtee}" = "${x}" ]; then
found=true
else
tmplist="${tmplist} ${x}"
fi
done
${found} || die \"${1}\" not found in \$${2}
eval ${vname}="\${tmplist}"
}
SEEDPROG='int rump_init(void); int main() { rump_init(); }'
CCPARAMS='-Wl,--no-as-needed -o /dev/null -x c -'
# sanity-check
for lib in $* ; do
[ "${lib#-l}" = "${lib}" -o -z "${lib#-l}" ] \
&& die Param \"${lib}\" is not of format -llib
done
# starting set and available components
WANTEDCOMP="$*"
RUMPBASE='-lrump -lrumpuser'
CURCOMP="${WANTEDCOMP}"
NEEDEDCOMP=''
ALLCOMP=$(ls ${LIBDIR} 2>/dev/null \
| sed -n '/^librump.*.so$/{s/lib/-l/;s/\.so//p;}')
[ -z "${ALLCOMP}" ] && die No rump kernel components in \"${LIBDIR}\"
# filter out ones we'll definitely not use
for f in ${CURCOMP} -lrumphijack -lrumpclient; do
filter ${f} ALLCOMP
done
# put the factions first so that they'll be tried first.
# this is an optimization to minimize link attempts.
FACTIONS='-lrumpvfs -lrumpnet -lrumpdev'
for f in ${FACTIONS}; do
filter ${f} ALLCOMP
done
ALLCOMP="${FACTIONS} ${ALLCOMP}"
debug 0 Searching component combinations. This may take a while ...
while :; do
debug 1 Current components: ${CURCOMP}
IFS=' '
out=$(echo ${SEEDPROG} \
| ${CC} -L${LIBDIR} ${CCPARAMS} ${CURCOMP} ${RUMPBASE} 2>&1)
[ -z "${out}" ] && break
undef=$(echo ${out} \
| sed -n '/undefined reference to/{s/.*`//;s/.$//p;q;}')
[ -z "${undef}" ] && break
debug 1 Trying to find ${undef}
for attempt in ${ALLCOMP}; do
debug 2 Component attempt: ${attempt}
unset IFS
nowundef=$(echo ${SEEDPROG} \
| ${CC} -L${LIBDIR} ${CCPARAMS} \
${attempt} ${CURCOMP} ${RUMPBASE} 2>&1 \
| sed -n '/undefined reference to/{s/.*`//;s/.$//p;}')
for one in ${nowundef}; do
[ "${one}" = "${undef}" ] && continue 2
done
CURCOMP="${attempt} ${CURCOMP}"
filter ${attempt} ALLCOMP
debug 1 Found ${undef} from ${attempt}
continue 2
done
die Internal error: unreachable statement
done
[ ! -z "${out}" ] && { echo 'ERROR:' >&2 ; echo ${out} >&2 ; exit 1 ; }
debug 0 Found a set
echo ${CURCOMP}
exit 0