Set up caching to speed up build and test.

.github/scripts/env.sh

@@ -0,0 +1,16 @@
+# Subroutine to set up environment variables.
+
+CORE_ROOT="$HOME/tiledb-core"
+
+case "$(uname -s)" in
+  Linux)
+    OS="linux"
+  ;;
+  Darwin)
+    OS="macos"
+  ;;
+  *)
+    echo 'Unknown OS!'
+    exit 1
+  ;;
+esac

.github/scripts/install_tiledb_binary.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+set -exo pipefail
+. "${BASH_SOURCE%/*}/env.sh"
+mkdir "$CORE_ROOT"
+cd "$CORE_ROOT"
+mkdir install
+curl --location -o tiledb.tar.gz "https://github.com/TileDB-Inc/TileDB/releases/download/${CORE_VERSION}/tiledb-${OS}-x86_64-${CORE_VERSION}-${CORE_HASH}.tar.gz"
+tar -C ./install -xf tiledb.tar.gz

.github/scripts/install_tiledb_source.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+set -exo pipefail
+. "${BASH_SOURCE%/*}/env.sh"
+mkdir "$CORE_ROOT"
+cd "$CORE_ROOT"
+case "$OS" in
+  linux)
+    NPROC="$(nproc)"
+  ;;
+  macos)
+    NPROC="$(sysctl -n hw.ncpu)"
+  ;;
+esac
+git clone --depth 1 -b "$CORE_VERSION" https://github.com/TileDB-Inc/TileDB.git
+cd TileDB
+mkdir build
+cd build
+# BUILD_FLAGS is unquoted because it needs to expand into multiple strings.
+cmake $BUILD_FLAGS -DCMAKE_INSTALL_PREFIX="${CORE_ROOT}/install" ..
+make -j"$NPROC"
+
+mkdir "${CORE_ROOT}/install"
+make -C tiledb install

.github/scripts/post_install.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -exo pipefail
+. "${BASH_SOURCE%/*}/env.sh"
+
+# Sets up the environment after installing or extracting TileDB.
+
+if [ "$OS" = "linux" ]; then
+  /sbin/ldconfig -n "${CORE_ROOT}/install/lib"
+fi
+
+go env -w "CGO_CFLAGS=-I${CORE_ROOT}/install/include"
+go env -w "CGO_LDFLAGS=-L${CORE_ROOT}/install/lib/ -Wl,-rpath,${CORE_ROOT}/install/lib/"