#!/bin/bash
set -eu

# NOTE:
# if set KCOV_DISCARD_CACHE=true, then it will force installing kcov)

renew="${KCOV_DISCARD_CACHE:-false}"

kcov_dir="kcov"
kcov_bin="${kcov_dir}/bin/kcov"
kcov_url="https://github.com/SimonKagstrom/kcov/archive"
kcov_ver="v34"

if [[ -f "${kcov_bin}" && "${renew}" != "true" ]]; then
  echo "kcov already installed in ${kcov_bin}"
else
  rm -fr $kcov_dir
  mkdir $kcov_dir
  cd $kcov_dir
  curl -sLO ${kcov_url}/${kcov_ver}.tar.gz
  mkdir $kcov_ver
  tar zxvf ${kcov_ver}.tar.gz -C $kcov_ver --strip-components=1
  cd $kcov_ver
  mkdir build
  cmake \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_INSTALL_PREFIX=/
  make
  make install DESTDIR=../
fi