# arg 1:  the new package version
post_install() {
	if grep -q libjpeg6 /etc/ld.so.conf
	then
		exit
	else
		echo "/opt/libjpeg6/include" >> /etc/ld.so.conf
		ldconfig
	fi
	ln -s /opt/libjpeg6/lib/libjpeg.so.62 /usr/lib/libjpeg.so.62
}
# arg 1:  the new package version
# arg 2:  the old package version
post_upgrade() {
	if grep -q libjpeg6 /etc/ld.so.conf
	then
		exit
	else
		echo "/opt/libjpeg6/include" >> /etc/ld.so.conf
		ldconfig
	fi
	ln -sf /opt/libjpeg6/lib/libjpeg.so.62 /usr/lib/libjpeg.so.62
}
# arg 1:  the old package version
post_remove() {
	grep -v libjpeg6 /etc/ld.so.conf > /tmp/ld.so.conf
	mv /tmp/ld.so.conf /etc/ld.so.conf
	ldconfig
}

op=$1
shift
$op $*