oldlib-check

#!/bin/bash

# Script to check for preserved or old libraries.
# See http://pastebin.com/CAbtakst for gentoo-update.
# Author: Marijn van Zon <marijn@suninet.org>

echo

preserved=`portageq list_preserved_libs /`

if [[ -n "${preserved}" ]]; then
    echo "The following preserved libraries are kept by portage:"
    echo
    echo "${preserved}"
    echo
    echo "Running emerge @preserved-rebuild ..."
    emerge -av @preserved-rebuild
    exit $?
fi

echo "There are no preserved libraries kept by portage."
echo -n "Double-check for remaining old libraries ... "

find /lib32/ /usr/lib32/ /lib64/ /usr/lib64/ -type f -name '*.so*' \
    | grep -v 'so$' \
    | sed 's/\.so.*//' \
    | sort \
    > /tmp/duplib1.$$

sort -u < /tmp/duplib1.$$ > /tmp/duplib2.$$

check=`diff /tmp/duplib1.$$ /tmp/duplib2.$$ \
    | grep '^<' \
    | sed -e 's/^< /ls -1 /' -e 's/$/.so*/' \
    | sh`

rm -f /tmp/duplib1.$$ /tmp/duplib2.$$

if [[ -z "${check}" ]]; then
    echo "no old libraries found!"
    echo
else
    echo "found the following libraries:"
    echo
    echo "${check}"
    echo
    exit 1
fi