diff --git a/contrib/install-db4.sh b/contrib/install-db4.sh
new file mode 100644
index 0000000..412fa53
--- /dev/null
+++ b/contrib/install-db4.sh
@@ -0,0 +1,107 @@
++#!/bin/sh
+# Copyright (c) 2017-2019 The Bitcoin Core developers
+# Copyright (c) 2020 The Bitradio Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+# Install libdb4.8 (Berkeley DB).
+
+export LC_ALL=C
+set -e
+
+if [ -z "${1}" ]; then
+  echo "Usage: $0 <base-dir> [<extra-bdb-configure-flag> ...]"
+  echo
+  echo "Must specify a single argument: the directory in which db4 will be built."
+  echo "This is probably \`pwd\` if you're at the root of the bitradio repository."
+  exit 1
+fi
+
+expand_path() {
+  cd "${1}" && pwd -P
+}
+
+BDB_PREFIX="$(expand_path ${1})/db4"; shift;
+BDB_VERSION='db-4.8.30.NC'
+BDB_HASH='12edc0df75bf9abd7f82f821795bcee50f42cb2e5f76a6a281b85732798364ef'
+BDB_URL="https://download.oracle.com/berkeley-db/${BDB_VERSION}.tar.gz"
+
+check_exists() {
+  command -v "$1" >/dev/null
+}
+
+sha256_check() {
+  # Args: <sha256_hash> <filename>
+  #
+  if check_exists sha256sum; then
+    echo "${1}  ${2}" | sha256sum -c
+  elif check_exists sha256; then
+    if [ "$(uname)" = "FreeBSD" ]; then
+      sha256 -c "${1}" "${2}"
+    else
+      echo "${1}  ${2}" | sha256 -c
+    fi
+  else
+    echo "${1}  ${2}" | shasum -a 256 -c
+  fi
+}
+
+http_get() {
+  # Args: <url> <filename> <sha256_hash>
+  #
+  # It's acceptable that we don't require SSL here because we manually verify
+  # content hashes below.
+  #
+  if [ -f "${2}" ]; then
+    echo "File ${2} already exists; not downloading again"
+  elif check_exists curl; then
+    curl --insecure --retry 5 "${1}" -o "${2}"
+  else
+    wget --no-check-certificate "${1}" -O "${2}"
+  fi
+
+  sha256_check "${3}" "${2}"
+}
+
+mkdir -p "${BDB_PREFIX}"
+http_get "${BDB_URL}" "${BDB_VERSION}.tar.gz" "${BDB_HASH}"
+tar -xzvf ${BDB_VERSION}.tar.gz -C "$BDB_PREFIX"
+cd "${BDB_PREFIX}/${BDB_VERSION}/"
+
+# Apply a patch necessary when building with clang and c++11 (see https://community.oracle.com/thread/3952592)
+CLANG_CXX11_PATCH_URL='https://gist.githubusercontent.com/LnL7/5153b251fd525fe15de69b67e63a6075/raw/7778e9364679093a32dec2908656738e16b6bdcb/clang.patch'
+CLANG_CXX11_PATCH_HASH='7a9a47b03fd5fb93a16ef42235fa9512db9b0829cfc3bdf90edd3ec1f44d637c'
+http_get "${CLANG_CXX11_PATCH_URL}" clang.patch "${CLANG_CXX11_PATCH_HASH}"
+patch -p2 < clang.patch
+
+# The packaged config.guess and config.sub are ancient (2009) and can cause build issues.
+# Replace them with modern versions.
+# See https://github.com/bitcoin/bitcoin/issues/16064
+CONFIG_GUESS_URL='https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=55eaf3e779455c4e5cc9f82efb5278be8f8f900b'
+CONFIG_GUESS_HASH='2d1ff7bca773d2ec3c6217118129220fa72d8adda67c7d2bf79994b3129232c1'
+CONFIG_SUB_URL='https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=55eaf3e779455c4e5cc9f82efb5278be8f8f900b'
+CONFIG_SUB_HASH='3a4befde9bcdf0fdb2763fc1bfa74e8696df94e1ad7aac8042d133c8ff1d2e32'
+
+rm -f "dist/config.guess"
+rm -f "dist/config.sub"
+
+http_get "${CONFIG_GUESS_URL}" dist/config.guess "${CONFIG_GUESS_HASH}"
+http_get "${CONFIG_SUB_URL}" dist/config.sub "${CONFIG_SUB_HASH}"
+
+cd build_unix/
+
+"${BDB_PREFIX}/${BDB_VERSION}/dist/configure" \
+  --enable-cxx --disable-shared --disable-replication --with-pic --prefix="${BDB_PREFIX}" \
+  "${@}"
+
+make install
+
+echo
+echo "db4 build complete."
+echo
+# shellcheck disable=SC2016
+echo 'When compiling bitradiod, run `./configure` in the following way:'
+echo
+echo "  export BDB_PREFIX='${BDB_PREFIX}'"
+# shellcheck disable=SC2016
+echo '  ./configure BDB_LIBS="-L${BDB_PREFIX}/lib -ldb_cxx-4.8" BDB_CFLAGS="-I${BDB_PREFIX}/include" ...'