#!/usr/bin/env bash

# Copyright 2018 Steven Bosnick
#
# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE-2.0 or
# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
# option. This file may not be copied, modified, or distributed
# except according to those terms

set -ev

if [[ $# -lt 2 ]]; then
    cat <<- EOF
    usage: $0 kcov_version install_prefix [working_dir_base]

    The default working_dir_base is \$HOME.
EOF
    exit
fi

kcov_slug=SimonKagstrom/kcov

kcov_version=$1
install_prefix=$2
working_dir=${3:-$HOME}/${kcov_slug}

# check for ${install_prefix}/bin/kcov and exit early if it exists and its version is ${kcov_version}
if [[ -x ${install_prefix}/bin/kcov && $(${install_prefix}/bin/kcov --version | cut -f 2 -d ' ') == ${kcov_version} ]]; then
    exit
fi

# get and untar the archive
mkdir -p ${working_dir}
wget -O - https://github.com/${kcov_slug}/archive/v${kcov_version}.tar.gz | tar --directory=${working_dir} -xz

# cmake
mkdir -p ${working_dir}/kcov-${kcov_version}/build
cd ${working_dir}/kcov-${kcov_version}/build
cmake -DCMAKE_INSTALL_PREFIX=${install_prefix} ..

# make
make

# make install
make install