Hi,

I have attached an updated version of my rebuild list script that now
uses readelf instead of ldd thanks to Thomas' suggestion. The
advantages of this compared to ldd are massive in terms of speed but
also mean that you don't need to use a chroot to avoid false positives.


Usage:
./rebuildlist /path/to/package/dir lib1 [lib2 ...]

On my laptop (not blazingly fast in cpu or hard-drive terms), this takes
~15min to scan my package cache (all testing, core and extra and
whatever I have from community). So this is now reasonable for people
to run on the new server and we will never miss a rebuild again!


Any comments on the script before I make the git patch to push it to
devtools?


Cheers,
Allan


#! /bin/bash

# rebuildlist - list packages needing rebuilt for a soname bump
#
# Copyright (c) 2009 by Allan McRae <allan@archlinux.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, see <http://www.gnu.org/licenses/>.


if [ -z "$1" -o -z "$2" ]; then
echo "Usage $0 <pkg directory> <library1> [<library2> ...]"
exit
fi

directory=$1
shift

while [ -n "$1" ]; do
grepexpr="$grepexpr -e ${1%%.so}.so"
shift
done

startdir=$(pwd)
tmpdir=$(mktemp -d)
cd $tmpdir

for pkg in $(ls $directory/*.pkg.tar.gz); do
pkg=${pkg##*/}
echo "Scanning $pkg"
mkdir $tmpdir/extract
cp $directory/$pkg $tmpdir/extract
cd $tmpdir/extract
tar -xf $directory/$pkg
rm $pkg
found=$(readelf --dynamic $(find -type f) 2>/dev/null | grep $grepexpr | wc -l)
if [ $found -ne 0 ]; then
echo ${pkg%-*-*-*} >> ../rebuildlist.txt
fi
cd ..
rm -rf extract
done

cp $tmpdir/rebuildlist.txt $startdir