Add docker configurations used by the buildbots.

These are the scripts I use to create the docker images for
the build bots and run them.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@347244 91177308-0d34-0410-b5e6-96231b3b80d8

utils/docker/scripts/build_install_llvm.sh

@@ -0,0 +1,114 @@
+#!/usr/bin/env bash
+#===- llvm/utils/docker/scripts/build_install_llvm.sh ---------------------===//
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+#===-----------------------------------------------------------------------===//
+
+set -e
+
+function show_usage() {
+  cat << EOF
+Usage: build_install_llvm.sh [options] -- [cmake-args]
+
+Run cmake with the specified arguments. Used inside docker container.
+Passes additional -DCMAKE_INSTALL_PREFIX and puts the build results into
+the directory specified by --to option.
+
+Available options:
+  -h|--help           show this help message
+  -i|--install-target name of a cmake install target to build and include in
+                      the resulting archive. Can be specified multiple times.
+  --install           destination directory where to install the targets.
+  --source            location of the source tree.
+  --build             location to use as the build directory.
+Required options: --to, --source, --build, and at least one --install-target.
+
+All options after '--' are passed to CMake invocation.
+EOF
+}
+
+CMAKE_ARGS=""
+CMAKE_INSTALL_TARGETS=""
+CLANG_INSTALL_DIR=""
+CLANG_SOURCE_DIR=""
+CLANG_BUILD_DIR=""
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    -i|--install-target)
+      shift
+      CMAKE_INSTALL_TARGETS="$CMAKE_INSTALL_TARGETS $1"
+      shift
+      ;;
+    --source)
+      shift
+      CLANG_SOURCE_DIR="$1"
+      shift
+      ;;
+    --build)
+      shift
+      CLANG_BUILD_DIR="$1"
+      shift
+      ;;
+    --install)
+      shift
+      CLANG_INSTALL_DIR="$1"
+      shift
+      ;;
+    --)
+      shift
+      CMAKE_ARGS="$*"
+      shift $#
+      ;;
+    -h|--help)
+      show_usage
+      exit 0
+      ;;
+    *)
+      echo "Unknown option: $1"
+      exit 1
+  esac
+done
+
+if [ "$CLANG_SOURCE_DIR" == "" ]; then
+  echo "No source directory. Please pass --source."
+  exit 1
+fi
+
+if [ "$CLANG_BUILD_DIR" == "" ]; then
+  echo "No build directory. Please pass --build"
+  exit 1
+fi
+
+if [ "$CMAKE_INSTALL_TARGETS" == "" ]; then
+  echo "No install targets. Please pass one or more --install-target."
+  exit 1
+fi
+
+if [ "$CLANG_INSTALL_DIR" == "" ]; then
+  echo "No install directory. Please specify the --to argument."
+  exit 1
+fi
+
+echo "Building in $CLANG_BUILD_DIR"
+mkdir -p "$CLANG_BUILD_DIR"
+pushd "$CLANG_BUILD_DIR"
+
+# Run the build as specified in the build arguments.
+echo "Running build"
+cmake -GNinja \
+  -DCMAKE_INSTALL_PREFIX="$CLANG_INSTALL_DIR" \
+  $CMAKE_ARGS \
+  "$CLANG_SOURCE_DIR"
+ninja $CMAKE_INSTALL_TARGETS
+
+popd
+
+# Cleanup.
+rm -rf "$CLANG_BUILD_DIR"
+
+echo "Done"