#!/bin/sh -
#
#   checklibs -- Check for missing libraries
#
#   Written for FreeBSD (tested on 4.x - 8.x), probably won't work elsewhere.
#   Usage:  checklibs
#
#   Copyright (C) 2006-2010 Oliver Fromme <olli@fromme.com> <olli@secnetix.de>
#   All rights reserved. Standard 2-clause BSD license and disclaimer apply,
#   please refer to the file /usr/share/examples/etc/bsd-style-copyright on
#   FreeBSD or ask the author for a copy.
#

if [ $# -gt 0 ]; then
	echo "Usage:  ${0##*/}" >&2
	echo "Check for missing libraries." >&2
	exit 1
fi

existdirs()
{
	tr " " '\n' |
	while read DIR; do
		if [ -d "$DIR" ]; then
			echo "$DIR"
		fi
	done
}

checkdirs()
{
	echo "$@" |
	existdirs |
	xargs -J% find % -depth 1 -type f |
	xargs ldd 2>/dev/null |
	awk '
		{
			if (NF == 1) {
				currfile = $1
				sub(/:$/, "", currfile)
			}
			else if (/not found/)
				print currfile, "-->", $1
		}
	'
}

LIBDIRS=$(/sbin/ldconfig -r | sed -n 's/:/ /g;/earch director/s+^[^/]*/+/+p')
BINDIRS=$(echo "$PATH" | tr : " ")

EXTRA=$(
	for i in lib libexec; do
		echo /$i /usr/$i /usr/X11R6/$i /usr/local/$i
	done |
	existdirs |
	xargs -J% find % -type d
)
for i in bin sbin; do
	EXTRA="$EXTRA /$i /usr/$i /usr/X11R6/$i /usr/local/$i"
done
EXTRA="$EXTRA /usr/games"

DIRS=$(echo $LIBDIRS $BINDIRS $EXTRA | tr " " '\n' | sort -u)

#   For debugging only:  Print list of directories that are being
#   checked for dynamically linked binaries and shared libraries:
#echo "$DIRS"

checkdirs $DIRS

#--