add script that installs s4tf and deps on ubuntu1804 (tensorflow#233)

Author: marcrasi

utils/install-ubuntu1804.sh

@@ -0,0 +1,83 @@
+#!/bin/bash
+
+# Installs a Swift for TensorFlow toolchain from scratch on Ubuntu 18.04.
+#
+# Usage:
+#   ./install-ubuntu1804
+#     [--toolchain-url TOOLCHAIN_URL]
+#     [--jupyter-url JUPYTER_URL]
+#     [--cuda CUDA_VERSION]
+#     [--no-jupyter]
+#     [--install-location INSTALL_LOCATION]
+#
+# Arguments:
+#   --toolchain-url: Specifies the URL for the toolchain. Defaults to the latest
+#                    nightly CPU-only toolchain.
+#   --jupyter-url: Specifies the URL for swift-jupyter. Defaults to the latest
+#                  nightly build. Set this to the empty string to disable
+#                  swift-jupyter installation.
+#   --install-location: Directory to extract the toolchain. Defaults to
+#                       "./swift-toolchain".
+
+set -exuo pipefail
+
+TOOLCHAIN_URL=https://storage.googleapis.com/swift-tensorflow-artifacts/nightlies/latest/swift-tensorflow-DEVELOPMENT-ubuntu18.04.tar.gz
+JUPYTER_URL=https://storage.googleapis.com/swift-tensorflow-artifacts/nightlies/latest/swift-jupyter.tar.gz
+INSTALL_LOCATION=./swift-toolchain
+
+# Parse arguments.
+PARSE_ERROR="invalid arguments"
+while
+        arg="${1-}"
+        case "$arg" in
+        --toolchain-url)    TOOLCHAIN_URL="${2?"$PARSE_ERROR"}"; shift;;
+        --jupyter-url)      JUPYTER_URL="${2?"$PARSE_ERROR"}"; shift;;
+        --install-location) INSTALL_LOCATION="${2?"$PARSE_ERROR"}"; shift;;
+        "")                 break;;
+        *)                  echo "$PARSE_ERROR" >&2; exit 2;;
+        esac
+do
+        shift
+done
+
+# Install dependencies
+DEBIAN_FRONTEND=noninteractive
+sudo apt-get update
+sudo apt-get install -y --no-install-recommends \
+  build-essential \
+  ca-certificates \
+  curl \
+  git \
+  python \
+  python-dev \
+  python-pip \
+  python-setuptools \
+  python-tk \
+  python3 \
+  python3-pip \
+  python3-setuptools \
+  clang \
+  libcurl4-openssl-dev \
+  libicu-dev \
+  libpython-dev \
+  libpython3-dev \
+  libncurses5-dev \
+  libxml2 \
+  libblocksruntime-dev
+
+# Download and extract Swift toolchain.
+mkdir -p "$INSTALL_LOCATION"
+wget "$TOOLCHAIN_URL" -O "$INSTALL_LOCATION"/swift-toolchain.tar.gz
+tar -xf "$INSTALL_LOCATION"/swift-toolchain.tar.gz -C "$INSTALL_LOCATION"
+rm "$INSTALL_LOCATION"/swift-toolchain.tar.gz
+
+# Download, extract, and register Jupyter, if requested.
+if [[ ! -z "$JUPYTER_URL" ]]; then
+  wget "$JUPYTER_URL" -O "$INSTALL_LOCATION"/swift-jupyter.tar.gz
+  tar -xf "$INSTALL_LOCATION"/swift-jupyter.tar.gz -C "$INSTALL_LOCATION"
+  rm "$INSTALL_LOCATION"/swift-jupyter.tar.gz
+
+  sudo pip3 install -r "$INSTALL_LOCATION"/swift-jupyter/requirements.txt
+
+  python3 "$INSTALL_LOCATION"/swift-jupyter/register.py --user --swift-toolchain "$INSTALL_LOCATION" --swift-python-library /usr/lib/x86_64-linux-gnu/libpython3.6m.so
+fi