#!/bin/bash

set -eux

build_dir=${EMACS_BUILD:-.}

cd "${build_dir}"
make install

# Retrieve installation directory.  Many ways to do this; parsing
# 'config.status --config' might be TRT in principle; for simplicity,
# just:
prefix_dir=$(sed -n s/'^prefix *= *'//p Makefile)
apps_dir=~/apps

case ${prefix_dir}
in
    ${apps_dir}/*) target=${prefix_dir##${apps_dir}/} ;;
    *) exit ;;
esac

cd ${apps_dir}
ln -fsvT "${target}" emacs