#!/bin/bash

# Print packages containing libraries used by two packages
find_common() {

	if [ -z "${1}" ]; then
		echo "Usage: find-common binary1 binary2"
		return 1
	fi

	if [ "${1}" = "--help" ]; then
		echo "Usage: find-common [ --emerge ] [--help ] binary1 binary2"
		echo "The --emerge flag will emerge all shared dependencies."
		return 1
	fi

	if [ "${1}" = "--emerge" ]; then
		for i in $(sudo ldd `which ${2}` `which ${3}`| cut -d' ' -f3 | grep -v \: | sort | uniq -d)
			do qpkg -nc -f ${i}
		done | sort | uniq -d | xargs sudo emerge
		return 0
	fi

	if [ "${1}" != "--emerge" ]; then
		for i in $(sudo ldd `which ${1}` `which ${2}`| cut -d' ' -f3 | grep -v \: | sort | uniq -d)
			do qpkg -nc -f ${i}
		done | sort | uniq -d
		return 0
	fi
}

find_common $@