#!/bin/zsh

typeset -a HAVEL
HAVEL=($(nm -D $2 | awk '$2 == "T" {print $3}'))
typeset -A HAVE
for s in $HAVEL; do HAVE[$s]=1; done
typeset -a WANT
WANT=($(nm -u $1 | awk '{print $2}'))

for s in $WANT; do
    if [[ -z ${HAVE[$s]} ]]; then
        echo $s
    fi
done