#!/bin/bash

IFS=$'\n'
set -eu -o pipefail

echo
echo '==> Checking deps'
which git
which libtoolize
which autoreconf
which make
which gcc || which clang

echo
echo '==> Cloning repo'
if ! [ -e ldns ]; then
  git clone --single-branch --depth 1 --recurse-submodules https://github.com/NLnetLabs/ldns.git ldns
else
  echo ' ** ldns/ already exists'
fi

cd ldns
export CFLAGS="-O3"

echo
echo '==> libtoolize -ci'
libtoolize -ci

echo
echo '==> autoreconf -fi'
autoreconf -fi

echo
echo '==> ./configure (check deps, generate config)'
./configure \
  --with-drill \
  --without-pyldns \
  --without-pyldnsx \
  --enable-poll \
  --disable-gost \
  --disable-dane

echo
echo '==> make'
make -j$(nproc || echo 4)

unset CFLAGS
cd ..

echo
echo '==> Done'