feat: scripts for building dig & drill

.gitignore

@@ -1,2 +1,5 @@
+/bind9
+/ldns
 /hickory-dns
+
 /unbound.log

build_dig.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+IFS=$'\n'
+set -eu -o pipefail
+
+echo
+echo '==> Checking deps'
+which git
+which autoreconf
+which make
+which gcc || which clang
+
+echo
+echo '==> Cloning repo'
+if ! [ -e bind9 ]; then
+  git clone --single-branch --depth 1 https://gitlab.isc.org/isc-projects/bind9.git bind9
+else
+  echo ' ** bind9/ already exists'
+fi
+
+cd bind9
+export CFLAGS="-O3" CPPFLAGS="-O3"
+
+echo
+echo '==> autoreconf -fi'
+autoreconf -fi
+
+echo
+echo '==> ./configure (check deps, generate config)'
+./configure \
+  --with-jemalloc \
+  --disable-doh \
+  --disable-geoip \
+  --with-libxml2=no \
+  --with-json-c=no \
+  --with-libsystemd=no \
+  --with-zlib=no
+
+echo
+echo '==> make'
+make -j$(nproc)
+
+unset CFLAGS CPPFLAGS
+cd ..
+
+echo
+echo '==> Done'

build_drill.sh

@@ -0,0 +1,51 @@
+#!/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'